Index: elfnn-aarch64.c
===================================================================
--- elfnn-aarch64.c (nonexistent)
+++ elfnn-aarch64.c (revision 9)
@@ -0,0 +1,10242 @@
+/* AArch64-specific support for NN-bit ELF.
+ Copyright (C) 2009-2023 Free Software Foundation, Inc.
+ Contributed by ARM Ltd.
+
+ This file is part of BFD, the Binary File Descriptor library.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; see the file COPYING3. If not,
+ see <http://www.gnu.org/licenses/>. */
+
+/* Notes on implementation:
+
+ Thread Local Store (TLS)
+
+ Overview:
+
+ The implementation currently supports both traditional TLS and TLS
+ descriptors, but only general dynamic (GD).
+
+ For traditional TLS the assembler will present us with code
+ fragments of the form:
+
+ adrp x0, :tlsgd:foo
+ R_AARCH64_TLSGD_ADR_PAGE21(foo)
+ add x0, :tlsgd_lo12:foo
+ R_AARCH64_TLSGD_ADD_LO12_NC(foo)
+ bl __tls_get_addr
+ nop
+
+ For TLS descriptors the assembler will present us with code
+ fragments of the form:
+
+ adrp x0, :tlsdesc:foo R_AARCH64_TLSDESC_ADR_PAGE21(foo)
+ ldr x1, [x0, #:tlsdesc_lo12:foo] R_AARCH64_TLSDESC_LD64_LO12(foo)
+ add x0, x0, #:tlsdesc_lo12:foo R_AARCH64_TLSDESC_ADD_LO12(foo)
+ .tlsdesccall foo
+ blr x1 R_AARCH64_TLSDESC_CALL(foo)
+
+ The relocations R_AARCH64_TLSGD_{ADR_PREL21,ADD_LO12_NC} against foo
+ indicate that foo is thread local and should be accessed via the
+ traditional TLS mechanims.
+
+ The relocations R_AARCH64_TLSDESC_{ADR_PAGE21,LD64_LO12_NC,ADD_LO12_NC}
+ against foo indicate that 'foo' is thread local and should be accessed
+ via a TLS descriptor mechanism.
+
+ The precise instruction sequence is only relevant from the
+ perspective of linker relaxation which is currently not implemented.
+
+ The static linker must detect that 'foo' is a TLS object and
+ allocate a double GOT entry. The GOT entry must be created for both
+ global and local TLS symbols. Note that this is different to none
+ TLS local objects which do not need a GOT entry.
+
+ In the traditional TLS mechanism, the double GOT entry is used to
+ provide the tls_index structure, containing module and offset
+ entries. The static linker places the relocation R_AARCH64_TLS_DTPMOD
+ on the module entry. The loader will subsequently fixup this
+ relocation with the module identity.
+
+ For global traditional TLS symbols the static linker places an
+ R_AARCH64_TLS_DTPREL relocation on the offset entry. The loader
+ will subsequently fixup the offset. For local TLS symbols the static
+ linker fixes up offset.
+
+ In the TLS descriptor mechanism the double GOT entry is used to
+ provide the descriptor. The static linker places the relocation
+ R_AARCH64_TLSDESC on the first GOT slot. The loader will
+ subsequently fix this up.
+
+ Implementation:
+
+ The handling of TLS symbols is implemented across a number of
+ different backend functions. The following is a top level view of
+ what processing is performed where.
+
+ The TLS implementation maintains state information for each TLS
+ symbol. The state information for local and global symbols is kept
+ in different places. Global symbols use generic BFD structures while
+ local symbols use backend specific structures that are allocated and
+ maintained entirely by the backend.
+
+ The flow:
+
+ elfNN_aarch64_check_relocs()
+
+ This function is invoked for each relocation.
+
+ The TLS relocations R_AARCH64_TLSGD_{ADR_PREL21,ADD_LO12_NC} and
+ R_AARCH64_TLSDESC_{ADR_PAGE21,LD64_LO12_NC,ADD_LO12_NC} are
+ spotted. One time creation of local symbol data structures are
+ created when the first local symbol is seen.
+
+ The reference count for a symbol is incremented. The GOT type for
+ each symbol is marked as general dynamic.
+
+ elfNN_aarch64_allocate_dynrelocs ()
+
+ For each global with positive reference count we allocate a double
+ GOT slot. For a traditional TLS symbol we allocate space for two
+ relocation entries on the GOT, for a TLS descriptor symbol we
+ allocate space for one relocation on the slot. Record the GOT offset
+ for this symbol.
+
+ elfNN_aarch64_size_dynamic_sections ()
+
+ Iterate all input BFDS, look for in the local symbol data structure
+ constructed earlier for local TLS symbols and allocate them double
+ GOT slots along with space for a single GOT relocation. Update the
+ local symbol structure to record the GOT offset allocated.
+
+ elfNN_aarch64_relocate_section ()
+
+ Calls elfNN_aarch64_final_link_relocate ()
+
+ Emit the relevant TLS relocations against the GOT for each TLS
+ symbol. For local TLS symbols emit the GOT offset directly. The GOT
+ relocations are emitted once the first time a TLS symbol is
+ encountered. The implementation uses the LSB of the GOT offset to
+ flag that the relevant GOT relocations for a symbol have been
+ emitted. All of the TLS code that uses the GOT offset needs to take
+ care to mask out this flag bit before using the offset.
+
+ elfNN_aarch64_final_link_relocate ()
+
+ Fixup the R_AARCH64_TLSGD_{ADR_PREL21, ADD_LO12_NC} relocations. */
+
+#include "sysdep.h"
+#include "bfd.h"
+#include "libiberty.h"
+#include "libbfd.h"
+#include "elf-bfd.h"
+#include "bfdlink.h"
+#include "objalloc.h"
+#include "elf/aarch64.h"
+#include "elfxx-aarch64.h"
+#include "cpu-aarch64.h"
+
+#define ARCH_SIZE NN
+
+#if ARCH_SIZE == 64
+#define AARCH64_R(NAME) R_AARCH64_ ## NAME
+#define AARCH64_R_STR(NAME) "R_AARCH64_" #NAME
+#define HOWTO64(...) HOWTO (__VA_ARGS__)
+#define HOWTO32(...) EMPTY_HOWTO (0)
+#define LOG_FILE_ALIGN 3
+#define BFD_RELOC_AARCH64_TLSDESC_LD64_LO12_NC BFD_RELOC_AARCH64_TLSDESC_LD64_LO12
+#endif
+
+#if ARCH_SIZE == 32
+#define AARCH64_R(NAME) R_AARCH64_P32_ ## NAME
+#define AARCH64_R_STR(NAME) "R_AARCH64_P32_" #NAME
+#define HOWTO64(...) EMPTY_HOWTO (0)
+#define HOWTO32(...) HOWTO (__VA_ARGS__)
+#define LOG_FILE_ALIGN 2
+#define BFD_RELOC_AARCH64_TLSDESC_LD32_LO12 BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC
+#define R_AARCH64_P32_TLSDESC_ADD_LO12 R_AARCH64_P32_TLSDESC_ADD_LO12_NC
+#endif
+
+#define IS_AARCH64_TLS_RELOC(R_TYPE) \
+ ((R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21 \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADR_PREL21 \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_MOVW_G1 \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21 \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19 \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1 \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_HI12 \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12 \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12_NC \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21 \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADR_PREL21 \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12 \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12_NC \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12 \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12_NC \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12 \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12_NC \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12 \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12_NC \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0 \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0_NC \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1 \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1_NC \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G2 \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12 \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12 \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12_NC \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_LDST16_TPREL_LO12 \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_LDST16_TPREL_LO12_NC \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_LDST32_TPREL_LO12 \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_LDST32_TPREL_LO12_NC \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_LDST64_TPREL_LO12 \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_LDST64_TPREL_LO12_NC \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_LDST8_TPREL_LO12 \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_LDST8_TPREL_LO12_NC \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0 \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1 \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2 \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLS_DTPMOD \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLS_DTPREL \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLS_TPREL \
+ || IS_AARCH64_TLSDESC_RELOC ((R_TYPE)))
+
+#define IS_AARCH64_TLS_RELAX_RELOC(R_TYPE) \
+ ((R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADD \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADD_LO12 \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21 \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21 \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_CALL \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LD_PREL19 \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LDR \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_OFF_G1 \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LDR \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21 \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADR_PREL21 \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_MOVW_G1 \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21 \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19 \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21 \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADR_PREL21)
+
+#define IS_AARCH64_TLSDESC_RELOC(R_TYPE) \
+ ((R_TYPE) == BFD_RELOC_AARCH64_TLSDESC \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADD \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADD_LO12 \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21 \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21 \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_CALL \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LD64_LO12 \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LDR \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LD_PREL19 \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC \
+ || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_OFF_G1)
+
+#define ELIMINATE_COPY_RELOCS 1
+
+/* Return size of a relocation entry. HTAB is the bfd's
+ elf_aarch64_link_hash_entry. */
+#define RELOC_SIZE(HTAB) (sizeof (ElfNN_External_Rela))
+
+/* GOT Entry size - 8 bytes in ELF64 and 4 bytes in ELF32. */
+#define GOT_ENTRY_SIZE (ARCH_SIZE / 8)
+#define PLT_ENTRY_SIZE (32)
+#define PLT_SMALL_ENTRY_SIZE (16)
+#define PLT_TLSDESC_ENTRY_SIZE (32)
+/* PLT sizes with BTI insn. */
+#define PLT_BTI_SMALL_ENTRY_SIZE (24)
+/* PLT sizes with PAC insn. */
+#define PLT_PAC_SMALL_ENTRY_SIZE (24)
+/* PLT sizes with BTI and PAC insn. */
+#define PLT_BTI_PAC_SMALL_ENTRY_SIZE (24)
+
+/* Encoding of the nop instruction. */
+#define INSN_NOP 0xd503201f
+
+#define aarch64_compute_jump_table_size(htab) \
+ (((htab)->root.srelplt == NULL) ? 0 \
+ : (htab)->root.srelplt->reloc_count * GOT_ENTRY_SIZE)
+
+/* The first entry in a procedure linkage table looks like this
+ if the distance between the PLTGOT and the PLT is < 4GB use
+ these PLT entries. Note that the dynamic linker gets &PLTGOT[2]
+ in x16 and needs to work out PLTGOT[1] by using an address of
+ [x16,#-GOT_ENTRY_SIZE]. */
+static const bfd_byte elfNN_aarch64_small_plt0_entry[PLT_ENTRY_SIZE] =
+{
+ 0xf0, 0x7b, 0xbf, 0xa9, /* stp x16, x30, [sp, #-16]! */
+ 0x10, 0x00, 0x00, 0x90, /* adrp x16, (GOT+16) */
+#if ARCH_SIZE == 64
+ 0x11, 0x0A, 0x40, 0xf9, /* ldr x17, [x16, #PLT_GOT+0x10] */
+ 0x10, 0x42, 0x00, 0x91, /* add x16, x16,#PLT_GOT+0x10 */
+#else
+ 0x11, 0x0A, 0x40, 0xb9, /* ldr w17, [x16, #PLT_GOT+0x8] */
+ 0x10, 0x22, 0x00, 0x11, /* add w16, w16,#PLT_GOT+0x8 */
+#endif
+ 0x20, 0x02, 0x1f, 0xd6, /* br x17 */
+ 0x1f, 0x20, 0x03, 0xd5, /* nop */
+ 0x1f, 0x20, 0x03, 0xd5, /* nop */
+ 0x1f, 0x20, 0x03, 0xd5, /* nop */
+};
+
+static const bfd_byte elfNN_aarch64_small_plt0_bti_entry[PLT_ENTRY_SIZE] =
+{
+ 0x5f, 0x24, 0x03, 0xd5, /* bti c. */
+ 0xf0, 0x7b, 0xbf, 0xa9, /* stp x16, x30, [sp, #-16]! */
+ 0x10, 0x00, 0x00, 0x90, /* adrp x16, (GOT+16) */
+#if ARCH_SIZE == 64
+ 0x11, 0x0A, 0x40, 0xf9, /* ldr x17, [x16, #PLT_GOT+0x10] */
+ 0x10, 0x42, 0x00, 0x91, /* add x16, x16,#PLT_GOT+0x10 */
+#else
+ 0x11, 0x0A, 0x40, 0xb9, /* ldr w17, [x16, #PLT_GOT+0x8] */
+ 0x10, 0x22, 0x00, 0x11, /* add w16, w16,#PLT_GOT+0x8 */
+#endif
+ 0x20, 0x02, 0x1f, 0xd6, /* br x17 */
+ 0x1f, 0x20, 0x03, 0xd5, /* nop */
+ 0x1f, 0x20, 0x03, 0xd5, /* nop */
+};
+
+/* Per function entry in a procedure linkage table looks like this
+ if the distance between the PLTGOT and the PLT is < 4GB use
+ these PLT entries. Use BTI versions of the PLTs when enabled. */
+static const bfd_byte elfNN_aarch64_small_plt_entry[PLT_SMALL_ENTRY_SIZE] =
+{
+ 0x10, 0x00, 0x00, 0x90, /* adrp x16, PLTGOT + n * 8 */
+#if ARCH_SIZE == 64
+ 0x11, 0x02, 0x40, 0xf9, /* ldr x17, [x16, PLTGOT + n * 8] */
+ 0x10, 0x02, 0x00, 0x91, /* add x16, x16, :lo12:PLTGOT + n * 8 */
+#else
+ 0x11, 0x02, 0x40, 0xb9, /* ldr w17, [x16, PLTGOT + n * 4] */
+ 0x10, 0x02, 0x00, 0x11, /* add w16, w16, :lo12:PLTGOT + n * 4 */
+#endif
+ 0x20, 0x02, 0x1f, 0xd6, /* br x17. */
+};
+
+static const bfd_byte
+elfNN_aarch64_small_plt_bti_entry[PLT_BTI_SMALL_ENTRY_SIZE] =
+{
+ 0x5f, 0x24, 0x03, 0xd5, /* bti c. */
+ 0x10, 0x00, 0x00, 0x90, /* adrp x16, PLTGOT + n * 8 */
+#if ARCH_SIZE == 64
+ 0x11, 0x02, 0x40, 0xf9, /* ldr x17, [x16, PLTGOT + n * 8] */
+ 0x10, 0x02, 0x00, 0x91, /* add x16, x16, :lo12:PLTGOT + n * 8 */
+#else
+ 0x11, 0x02, 0x40, 0xb9, /* ldr w17, [x16, PLTGOT + n * 4] */
+ 0x10, 0x02, 0x00, 0x11, /* add w16, w16, :lo12:PLTGOT + n * 4 */
+#endif
+ 0x20, 0x02, 0x1f, 0xd6, /* br x17. */
+ 0x1f, 0x20, 0x03, 0xd5, /* nop */
+};
+
+static const bfd_byte
+elfNN_aarch64_small_plt_pac_entry[PLT_PAC_SMALL_ENTRY_SIZE] =
+{
+ 0x10, 0x00, 0x00, 0x90, /* adrp x16, PLTGOT + n * 8 */
+#if ARCH_SIZE == 64
+ 0x11, 0x02, 0x40, 0xf9, /* ldr x17, [x16, PLTGOT + n * 8] */
+ 0x10, 0x02, 0x00, 0x91, /* add x16, x16, :lo12:PLTGOT + n * 8 */
+#else
+ 0x11, 0x02, 0x40, 0xb9, /* ldr w17, [x16, PLTGOT + n * 4] */
+ 0x10, 0x02, 0x00, 0x11, /* add w16, w16, :lo12:PLTGOT + n * 4 */
+#endif
+ 0x9f, 0x21, 0x03, 0xd5, /* autia1716 */
+ 0x20, 0x02, 0x1f, 0xd6, /* br x17. */
+ 0x1f, 0x20, 0x03, 0xd5, /* nop */
+};
+
+static const bfd_byte
+elfNN_aarch64_small_plt_bti_pac_entry[PLT_BTI_PAC_SMALL_ENTRY_SIZE] =
+{
+ 0x5f, 0x24, 0x03, 0xd5, /* bti c. */
+ 0x10, 0x00, 0x00, 0x90, /* adrp x16, PLTGOT + n * 8 */
+#if ARCH_SIZE == 64
+ 0x11, 0x02, 0x40, 0xf9, /* ldr x17, [x16, PLTGOT + n * 8] */
+ 0x10, 0x02, 0x00, 0x91, /* add x16, x16, :lo12:PLTGOT + n * 8 */
+#else
+ 0x11, 0x02, 0x40, 0xb9, /* ldr w17, [x16, PLTGOT + n * 4] */
+ 0x10, 0x02, 0x00, 0x11, /* add w16, w16, :lo12:PLTGOT + n * 4 */
+#endif
+ 0x9f, 0x21, 0x03, 0xd5, /* autia1716 */
+ 0x20, 0x02, 0x1f, 0xd6, /* br x17. */
+};
+
+static const bfd_byte
+elfNN_aarch64_tlsdesc_small_plt_entry[PLT_TLSDESC_ENTRY_SIZE] =
+{
+ 0xe2, 0x0f, 0xbf, 0xa9, /* stp x2, x3, [sp, #-16]! */
+ 0x02, 0x00, 0x00, 0x90, /* adrp x2, 0 */
+ 0x03, 0x00, 0x00, 0x90, /* adrp x3, 0 */
+#if ARCH_SIZE == 64
+ 0x42, 0x00, 0x40, 0xf9, /* ldr x2, [x2, #0] */
+ 0x63, 0x00, 0x00, 0x91, /* add x3, x3, 0 */
+#else
+ 0x42, 0x00, 0x40, 0xb9, /* ldr w2, [x2, #0] */
+ 0x63, 0x00, 0x00, 0x11, /* add w3, w3, 0 */
+#endif
+ 0x40, 0x00, 0x1f, 0xd6, /* br x2 */
+ 0x1f, 0x20, 0x03, 0xd5, /* nop */
+ 0x1f, 0x20, 0x03, 0xd5, /* nop */
+};
+
+static const bfd_byte
+elfNN_aarch64_tlsdesc_small_plt_bti_entry[PLT_TLSDESC_ENTRY_SIZE] =
+{
+ 0x5f, 0x24, 0x03, 0xd5, /* bti c. */
+ 0xe2, 0x0f, 0xbf, 0xa9, /* stp x2, x3, [sp, #-16]! */
+ 0x02, 0x00, 0x00, 0x90, /* adrp x2, 0 */
+ 0x03, 0x00, 0x00, 0x90, /* adrp x3, 0 */
+#if ARCH_SIZE == 64
+ 0x42, 0x00, 0x40, 0xf9, /* ldr x2, [x2, #0] */
+ 0x63, 0x00, 0x00, 0x91, /* add x3, x3, 0 */
+#else
+ 0x42, 0x00, 0x40, 0xb9, /* ldr w2, [x2, #0] */
+ 0x63, 0x00, 0x00, 0x11, /* add w3, w3, 0 */
+#endif
+ 0x40, 0x00, 0x1f, 0xd6, /* br x2 */
+ 0x1f, 0x20, 0x03, 0xd5, /* nop */
+};
+
+#define elf_info_to_howto elfNN_aarch64_info_to_howto
+#define elf_info_to_howto_rel elfNN_aarch64_info_to_howto
+
+#define AARCH64_ELF_ABI_VERSION 0
+
+/* In case we're on a 32-bit machine, construct a 64-bit "-1" value. */
+#define ALL_ONES (~ (bfd_vma) 0)
+
+/* Indexed by the bfd interal reloc enumerators.
+ Therefore, the table needs to be synced with BFD_RELOC_AARCH64_*
+ in reloc.c. */
+
+static reloc_howto_type elfNN_aarch64_howto_table[] =
+{
+ EMPTY_HOWTO (0),
+
+ /* Basic data relocations. */
+
+ /* Deprecated, but retained for backwards compatibility. */
+ HOWTO64 (R_AARCH64_NULL, /* type */
+ 0, /* rightshift */
+ 0, /* size */
+ 0, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_AARCH64_NULL", /* name */
+ false, /* partial_inplace */
+ 0, /* src_mask */
+ 0, /* dst_mask */
+ false), /* pcrel_offset */
+ HOWTO (R_AARCH64_NONE, /* type */
+ 0, /* rightshift */
+ 0, /* size */
+ 0, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_AARCH64_NONE", /* name */
+ false, /* partial_inplace */
+ 0, /* src_mask */
+ 0, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* .xword: (S+A) */
+ HOWTO64 (AARCH64_R (ABS64), /* type */
+ 0, /* rightshift */
+ 8, /* size */
+ 64, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_unsigned, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (ABS64), /* name */
+ false, /* partial_inplace */
+ ALL_ONES, /* src_mask */
+ ALL_ONES, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* .word: (S+A) */
+ HOWTO (AARCH64_R (ABS32), /* type */
+ 0, /* rightshift */
+ 4, /* size */
+ 32, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_unsigned, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (ABS32), /* name */
+ false, /* partial_inplace */
+ 0xffffffff, /* src_mask */
+ 0xffffffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* .half: (S+A) */
+ HOWTO (AARCH64_R (ABS16), /* type */
+ 0, /* rightshift */
+ 2, /* size */
+ 16, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_unsigned, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (ABS16), /* name */
+ false, /* partial_inplace */
+ 0xffff, /* src_mask */
+ 0xffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* .xword: (S+A-P) */
+ HOWTO64 (AARCH64_R (PREL64), /* type */
+ 0, /* rightshift */
+ 8, /* size */
+ 64, /* bitsize */
+ true, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (PREL64), /* name */
+ false, /* partial_inplace */
+ ALL_ONES, /* src_mask */
+ ALL_ONES, /* dst_mask */
+ true), /* pcrel_offset */
+
+ /* .word: (S+A-P) */
+ HOWTO (AARCH64_R (PREL32), /* type */
+ 0, /* rightshift */
+ 4, /* size */
+ 32, /* bitsize */
+ true, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (PREL32), /* name */
+ false, /* partial_inplace */
+ 0xffffffff, /* src_mask */
+ 0xffffffff, /* dst_mask */
+ true), /* pcrel_offset */
+
+ /* .half: (S+A-P) */
+ HOWTO (AARCH64_R (PREL16), /* type */
+ 0, /* rightshift */
+ 2, /* size */
+ 16, /* bitsize */
+ true, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (PREL16), /* name */
+ false, /* partial_inplace */
+ 0xffff, /* src_mask */
+ 0xffff, /* dst_mask */
+ true), /* pcrel_offset */
+
+ /* Group relocations to create a 16, 32, 48 or 64 bit
+ unsigned data or abs address inline. */
+
+ /* MOVZ: ((S+A) >> 0) & 0xffff */
+ HOWTO (AARCH64_R (MOVW_UABS_G0), /* type */
+ 0, /* rightshift */
+ 4, /* size */
+ 16, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_unsigned, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (MOVW_UABS_G0), /* name */
+ false, /* partial_inplace */
+ 0xffff, /* src_mask */
+ 0xffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* MOVK: ((S+A) >> 0) & 0xffff [no overflow check] */
+ HOWTO (AARCH64_R (MOVW_UABS_G0_NC), /* type */
+ 0, /* rightshift */
+ 4, /* size */
+ 16, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (MOVW_UABS_G0_NC), /* name */
+ false, /* partial_inplace */
+ 0xffff, /* src_mask */
+ 0xffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* MOVZ: ((S+A) >> 16) & 0xffff */
+ HOWTO (AARCH64_R (MOVW_UABS_G1), /* type */
+ 16, /* rightshift */
+ 4, /* size */
+ 16, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_unsigned, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (MOVW_UABS_G1), /* name */
+ false, /* partial_inplace */
+ 0xffff, /* src_mask */
+ 0xffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* MOVK: ((S+A) >> 16) & 0xffff [no overflow check] */
+ HOWTO64 (AARCH64_R (MOVW_UABS_G1_NC), /* type */
+ 16, /* rightshift */
+ 4, /* size */
+ 16, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (MOVW_UABS_G1_NC), /* name */
+ false, /* partial_inplace */
+ 0xffff, /* src_mask */
+ 0xffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* MOVZ: ((S+A) >> 32) & 0xffff */
+ HOWTO64 (AARCH64_R (MOVW_UABS_G2), /* type */
+ 32, /* rightshift */
+ 4, /* size */
+ 16, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_unsigned, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (MOVW_UABS_G2), /* name */
+ false, /* partial_inplace */
+ 0xffff, /* src_mask */
+ 0xffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* MOVK: ((S+A) >> 32) & 0xffff [no overflow check] */
+ HOWTO64 (AARCH64_R (MOVW_UABS_G2_NC), /* type */
+ 32, /* rightshift */
+ 4, /* size */
+ 16, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (MOVW_UABS_G2_NC), /* name */
+ false, /* partial_inplace */
+ 0xffff, /* src_mask */
+ 0xffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* MOVZ: ((S+A) >> 48) & 0xffff */
+ HOWTO64 (AARCH64_R (MOVW_UABS_G3), /* type */
+ 48, /* rightshift */
+ 4, /* size */
+ 16, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_unsigned, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (MOVW_UABS_G3), /* name */
+ false, /* partial_inplace */
+ 0xffff, /* src_mask */
+ 0xffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* Group relocations to create high part of a 16, 32, 48 or 64 bit
+ signed data or abs address inline. Will change instruction
+ to MOVN or MOVZ depending on sign of calculated value. */
+
+ /* MOV[ZN]: ((S+A) >> 0) & 0xffff */
+ HOWTO (AARCH64_R (MOVW_SABS_G0), /* type */
+ 0, /* rightshift */
+ 4, /* size */
+ 17, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (MOVW_SABS_G0), /* name */
+ false, /* partial_inplace */
+ 0xffff, /* src_mask */
+ 0xffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* MOV[ZN]: ((S+A) >> 16) & 0xffff */
+ HOWTO64 (AARCH64_R (MOVW_SABS_G1), /* type */
+ 16, /* rightshift */
+ 4, /* size */
+ 17, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (MOVW_SABS_G1), /* name */
+ false, /* partial_inplace */
+ 0xffff, /* src_mask */
+ 0xffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* MOV[ZN]: ((S+A) >> 32) & 0xffff */
+ HOWTO64 (AARCH64_R (MOVW_SABS_G2), /* type */
+ 32, /* rightshift */
+ 4, /* size */
+ 17, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (MOVW_SABS_G2), /* name */
+ false, /* partial_inplace */
+ 0xffff, /* src_mask */
+ 0xffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* Group relocations to create a 16, 32, 48 or 64 bit
+ PC relative address inline. */
+
+ /* MOV[NZ]: ((S+A-P) >> 0) & 0xffff */
+ HOWTO (AARCH64_R (MOVW_PREL_G0), /* type */
+ 0, /* rightshift */
+ 4, /* size */
+ 17, /* bitsize */
+ true, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (MOVW_PREL_G0), /* name */
+ false, /* partial_inplace */
+ 0xffff, /* src_mask */
+ 0xffff, /* dst_mask */
+ true), /* pcrel_offset */
+
+ /* MOVK: ((S+A-P) >> 0) & 0xffff [no overflow check] */
+ HOWTO (AARCH64_R (MOVW_PREL_G0_NC), /* type */
+ 0, /* rightshift */
+ 4, /* size */
+ 16, /* bitsize */
+ true, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (MOVW_PREL_G0_NC), /* name */
+ false, /* partial_inplace */
+ 0xffff, /* src_mask */
+ 0xffff, /* dst_mask */
+ true), /* pcrel_offset */
+
+ /* MOV[NZ]: ((S+A-P) >> 16) & 0xffff */
+ HOWTO (AARCH64_R (MOVW_PREL_G1), /* type */
+ 16, /* rightshift */
+ 4, /* size */
+ 17, /* bitsize */
+ true, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (MOVW_PREL_G1), /* name */
+ false, /* partial_inplace */
+ 0xffff, /* src_mask */
+ 0xffff, /* dst_mask */
+ true), /* pcrel_offset */
+
+ /* MOVK: ((S+A-P) >> 16) & 0xffff [no overflow check] */
+ HOWTO64 (AARCH64_R (MOVW_PREL_G1_NC), /* type */
+ 16, /* rightshift */
+ 4, /* size */
+ 16, /* bitsize */
+ true, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (MOVW_PREL_G1_NC), /* name */
+ false, /* partial_inplace */
+ 0xffff, /* src_mask */
+ 0xffff, /* dst_mask */
+ true), /* pcrel_offset */
+
+ /* MOV[NZ]: ((S+A-P) >> 32) & 0xffff */
+ HOWTO64 (AARCH64_R (MOVW_PREL_G2), /* type */
+ 32, /* rightshift */
+ 4, /* size */
+ 17, /* bitsize */
+ true, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (MOVW_PREL_G2), /* name */
+ false, /* partial_inplace */
+ 0xffff, /* src_mask */
+ 0xffff, /* dst_mask */
+ true), /* pcrel_offset */
+
+ /* MOVK: ((S+A-P) >> 32) & 0xffff [no overflow check] */
+ HOWTO64 (AARCH64_R (MOVW_PREL_G2_NC), /* type */
+ 32, /* rightshift */
+ 4, /* size */
+ 16, /* bitsize */
+ true, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (MOVW_PREL_G2_NC), /* name */
+ false, /* partial_inplace */
+ 0xffff, /* src_mask */
+ 0xffff, /* dst_mask */
+ true), /* pcrel_offset */
+
+ /* MOV[NZ]: ((S+A-P) >> 48) & 0xffff */
+ HOWTO64 (AARCH64_R (MOVW_PREL_G3), /* type */
+ 48, /* rightshift */
+ 4, /* size */
+ 16, /* bitsize */
+ true, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (MOVW_PREL_G3), /* name */
+ false, /* partial_inplace */
+ 0xffff, /* src_mask */
+ 0xffff, /* dst_mask */
+ true), /* pcrel_offset */
+
+/* Relocations to generate 19, 21 and 33 bit PC-relative load/store
+ addresses: PG(x) is (x & ~0xfff). */
+
+ /* LD-lit: ((S+A-P) >> 2) & 0x7ffff */
+ HOWTO (AARCH64_R (LD_PREL_LO19), /* type */
+ 2, /* rightshift */
+ 4, /* size */
+ 19, /* bitsize */
+ true, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (LD_PREL_LO19), /* name */
+ false, /* partial_inplace */
+ 0x7ffff, /* src_mask */
+ 0x7ffff, /* dst_mask */
+ true), /* pcrel_offset */
+
+ /* ADR: (S+A-P) & 0x1fffff */
+ HOWTO (AARCH64_R (ADR_PREL_LO21), /* type */
+ 0, /* rightshift */
+ 4, /* size */
+ 21, /* bitsize */
+ true, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (ADR_PREL_LO21), /* name */
+ false, /* partial_inplace */
+ 0x1fffff, /* src_mask */
+ 0x1fffff, /* dst_mask */
+ true), /* pcrel_offset */
+
+ /* ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff */
+ HOWTO (AARCH64_R (ADR_PREL_PG_HI21), /* type */
+ 12, /* rightshift */
+ 4, /* size */
+ 21, /* bitsize */
+ true, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (ADR_PREL_PG_HI21), /* name */
+ false, /* partial_inplace */
+ 0x1fffff, /* src_mask */
+ 0x1fffff, /* dst_mask */
+ true), /* pcrel_offset */
+
+ /* ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff [no overflow check] */
+ HOWTO64 (AARCH64_R (ADR_PREL_PG_HI21_NC), /* type */
+ 12, /* rightshift */
+ 4, /* size */
+ 21, /* bitsize */
+ true, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (ADR_PREL_PG_HI21_NC), /* name */
+ false, /* partial_inplace */
+ 0x1fffff, /* src_mask */
+ 0x1fffff, /* dst_mask */
+ true), /* pcrel_offset */
+
+ /* ADD: (S+A) & 0xfff [no overflow check] */
+ HOWTO (AARCH64_R (ADD_ABS_LO12_NC), /* type */
+ 0, /* rightshift */
+ 4, /* size */
+ 12, /* bitsize */
+ false, /* pc_relative */
+ 10, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (ADD_ABS_LO12_NC), /* name */
+ false, /* partial_inplace */
+ 0x3ffc00, /* src_mask */
+ 0x3ffc00, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* LD/ST8: (S+A) & 0xfff */
+ HOWTO (AARCH64_R (LDST8_ABS_LO12_NC), /* type */
+ 0, /* rightshift */
+ 4, /* size */
+ 12, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (LDST8_ABS_LO12_NC), /* name */
+ false, /* partial_inplace */
+ 0xfff, /* src_mask */
+ 0xfff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* Relocations for control-flow instructions. */
+
+ /* TBZ/NZ: ((S+A-P) >> 2) & 0x3fff */
+ HOWTO (AARCH64_R (TSTBR14), /* type */
+ 2, /* rightshift */
+ 4, /* size */
+ 14, /* bitsize */
+ true, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (TSTBR14), /* name */
+ false, /* partial_inplace */
+ 0x3fff, /* src_mask */
+ 0x3fff, /* dst_mask */
+ true), /* pcrel_offset */
+
+ /* B.cond: ((S+A-P) >> 2) & 0x7ffff */
+ HOWTO (AARCH64_R (CONDBR19), /* type */
+ 2, /* rightshift */
+ 4, /* size */
+ 19, /* bitsize */
+ true, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (CONDBR19), /* name */
+ false, /* partial_inplace */
+ 0x7ffff, /* src_mask */
+ 0x7ffff, /* dst_mask */
+ true), /* pcrel_offset */
+
+ /* B: ((S+A-P) >> 2) & 0x3ffffff */
+ HOWTO (AARCH64_R (JUMP26), /* type */
+ 2, /* rightshift */
+ 4, /* size */
+ 26, /* bitsize */
+ true, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (JUMP26), /* name */
+ false, /* partial_inplace */
+ 0x3ffffff, /* src_mask */
+ 0x3ffffff, /* dst_mask */
+ true), /* pcrel_offset */
+
+ /* BL: ((S+A-P) >> 2) & 0x3ffffff */
+ HOWTO (AARCH64_R (CALL26), /* type */
+ 2, /* rightshift */
+ 4, /* size */
+ 26, /* bitsize */
+ true, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (CALL26), /* name */
+ false, /* partial_inplace */
+ 0x3ffffff, /* src_mask */
+ 0x3ffffff, /* dst_mask */
+ true), /* pcrel_offset */
+
+ /* LD/ST16: (S+A) & 0xffe */
+ HOWTO (AARCH64_R (LDST16_ABS_LO12_NC), /* type */
+ 1, /* rightshift */
+ 4, /* size */
+ 12, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (LDST16_ABS_LO12_NC), /* name */
+ false, /* partial_inplace */
+ 0xffe, /* src_mask */
+ 0xffe, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* LD/ST32: (S+A) & 0xffc */
+ HOWTO (AARCH64_R (LDST32_ABS_LO12_NC), /* type */
+ 2, /* rightshift */
+ 4, /* size */
+ 12, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (LDST32_ABS_LO12_NC), /* name */
+ false, /* partial_inplace */
+ 0xffc, /* src_mask */
+ 0xffc, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* LD/ST64: (S+A) & 0xff8 */
+ HOWTO (AARCH64_R (LDST64_ABS_LO12_NC), /* type */
+ 3, /* rightshift */
+ 4, /* size */
+ 12, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (LDST64_ABS_LO12_NC), /* name */
+ false, /* partial_inplace */
+ 0xff8, /* src_mask */
+ 0xff8, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* LD/ST128: (S+A) & 0xff0 */
+ HOWTO (AARCH64_R (LDST128_ABS_LO12_NC), /* type */
+ 4, /* rightshift */
+ 4, /* size */
+ 12, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (LDST128_ABS_LO12_NC), /* name */
+ false, /* partial_inplace */
+ 0xff0, /* src_mask */
+ 0xff0, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* Set a load-literal immediate field to bits
+ 0x1FFFFC of G(S)-P */
+ HOWTO (AARCH64_R (GOT_LD_PREL19), /* type */
+ 2, /* rightshift */
+ 4, /* size */
+ 19, /* bitsize */
+ true, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (GOT_LD_PREL19), /* name */
+ false, /* partial_inplace */
+ 0xffffe0, /* src_mask */
+ 0xffffe0, /* dst_mask */
+ true), /* pcrel_offset */
+
+ /* Get to the page for the GOT entry for the symbol
+ (G(S) - P) using an ADRP instruction. */
+ HOWTO (AARCH64_R (ADR_GOT_PAGE), /* type */
+ 12, /* rightshift */
+ 4, /* size */
+ 21, /* bitsize */
+ true, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (ADR_GOT_PAGE), /* name */
+ false, /* partial_inplace */
+ 0x1fffff, /* src_mask */
+ 0x1fffff, /* dst_mask */
+ true), /* pcrel_offset */
+
+ /* LD64: GOT offset G(S) & 0xff8 */
+ HOWTO64 (AARCH64_R (LD64_GOT_LO12_NC), /* type */
+ 3, /* rightshift */
+ 4, /* size */
+ 12, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (LD64_GOT_LO12_NC), /* name */
+ false, /* partial_inplace */
+ 0xff8, /* src_mask */
+ 0xff8, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* LD32: GOT offset G(S) & 0xffc */
+ HOWTO32 (AARCH64_R (LD32_GOT_LO12_NC), /* type */
+ 2, /* rightshift */
+ 4, /* size */
+ 12, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (LD32_GOT_LO12_NC), /* name */
+ false, /* partial_inplace */
+ 0xffc, /* src_mask */
+ 0xffc, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* Lower 16 bits of GOT offset for the symbol. */
+ HOWTO64 (AARCH64_R (MOVW_GOTOFF_G0_NC), /* type */
+ 0, /* rightshift */
+ 4, /* size */
+ 16, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (MOVW_GOTOFF_G0_NC), /* name */
+ false, /* partial_inplace */
+ 0xffff, /* src_mask */
+ 0xffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* Higher 16 bits of GOT offset for the symbol. */
+ HOWTO64 (AARCH64_R (MOVW_GOTOFF_G1), /* type */
+ 16, /* rightshift */
+ 4, /* size */
+ 16, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_unsigned, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (MOVW_GOTOFF_G1), /* name */
+ false, /* partial_inplace */
+ 0xffff, /* src_mask */
+ 0xffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* LD64: GOT offset for the symbol. */
+ HOWTO64 (AARCH64_R (LD64_GOTOFF_LO15), /* type */
+ 3, /* rightshift */
+ 4, /* size */
+ 12, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_unsigned, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (LD64_GOTOFF_LO15), /* name */
+ false, /* partial_inplace */
+ 0x7ff8, /* src_mask */
+ 0x7ff8, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* LD32: GOT offset to the page address of GOT table.
+ (G(S) - PAGE (_GLOBAL_OFFSET_TABLE_)) & 0x5ffc. */
+ HOWTO32 (AARCH64_R (LD32_GOTPAGE_LO14), /* type */
+ 2, /* rightshift */
+ 4, /* size */
+ 12, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_unsigned, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (LD32_GOTPAGE_LO14), /* name */
+ false, /* partial_inplace */
+ 0x5ffc, /* src_mask */
+ 0x5ffc, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* LD64: GOT offset to the page address of GOT table.
+ (G(S) - PAGE (_GLOBAL_OFFSET_TABLE_)) & 0x7ff8. */
+ HOWTO64 (AARCH64_R (LD64_GOTPAGE_LO15), /* type */
+ 3, /* rightshift */
+ 4, /* size */
+ 12, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_unsigned, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (LD64_GOTPAGE_LO15), /* name */
+ false, /* partial_inplace */
+ 0x7ff8, /* src_mask */
+ 0x7ff8, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* Get to the page for the GOT entry for the symbol
+ (G(S) - P) using an ADRP instruction. */
+ HOWTO (AARCH64_R (TLSGD_ADR_PAGE21), /* type */
+ 12, /* rightshift */
+ 4, /* size */
+ 21, /* bitsize */
+ true, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (TLSGD_ADR_PAGE21), /* name */
+ false, /* partial_inplace */
+ 0x1fffff, /* src_mask */
+ 0x1fffff, /* dst_mask */
+ true), /* pcrel_offset */
+
+ HOWTO (AARCH64_R (TLSGD_ADR_PREL21), /* type */
+ 0, /* rightshift */
+ 4, /* size */
+ 21, /* bitsize */
+ true, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (TLSGD_ADR_PREL21), /* name */
+ false, /* partial_inplace */
+ 0x1fffff, /* src_mask */
+ 0x1fffff, /* dst_mask */
+ true), /* pcrel_offset */
+
+ /* ADD: GOT offset G(S) & 0xff8 [no overflow check] */
+ HOWTO (AARCH64_R (TLSGD_ADD_LO12_NC), /* type */
+ 0, /* rightshift */
+ 4, /* size */
+ 12, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (TLSGD_ADD_LO12_NC), /* name */
+ false, /* partial_inplace */
+ 0xfff, /* src_mask */
+ 0xfff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* Lower 16 bits of GOT offset to tls_index. */
+ HOWTO64 (AARCH64_R (TLSGD_MOVW_G0_NC), /* type */
+ 0, /* rightshift */
+ 4, /* size */
+ 16, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (TLSGD_MOVW_G0_NC), /* name */
+ false, /* partial_inplace */
+ 0xffff, /* src_mask */
+ 0xffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* Higher 16 bits of GOT offset to tls_index. */
+ HOWTO64 (AARCH64_R (TLSGD_MOVW_G1), /* type */
+ 16, /* rightshift */
+ 4, /* size */
+ 16, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_unsigned, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (TLSGD_MOVW_G1), /* name */
+ false, /* partial_inplace */
+ 0xffff, /* src_mask */
+ 0xffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ HOWTO (AARCH64_R (TLSIE_ADR_GOTTPREL_PAGE21), /* type */
+ 12, /* rightshift */
+ 4, /* size */
+ 21, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (TLSIE_ADR_GOTTPREL_PAGE21), /* name */
+ false, /* partial_inplace */
+ 0x1fffff, /* src_mask */
+ 0x1fffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ HOWTO64 (AARCH64_R (TLSIE_LD64_GOTTPREL_LO12_NC), /* type */
+ 3, /* rightshift */
+ 4, /* size */
+ 12, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (TLSIE_LD64_GOTTPREL_LO12_NC), /* name */
+ false, /* partial_inplace */
+ 0xff8, /* src_mask */
+ 0xff8, /* dst_mask */
+ false), /* pcrel_offset */
+
+ HOWTO32 (AARCH64_R (TLSIE_LD32_GOTTPREL_LO12_NC), /* type */
+ 2, /* rightshift */
+ 4, /* size */
+ 12, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (TLSIE_LD32_GOTTPREL_LO12_NC), /* name */
+ false, /* partial_inplace */
+ 0xffc, /* src_mask */
+ 0xffc, /* dst_mask */
+ false), /* pcrel_offset */
+
+ HOWTO (AARCH64_R (TLSIE_LD_GOTTPREL_PREL19), /* type */
+ 2, /* rightshift */
+ 4, /* size */
+ 19, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (TLSIE_LD_GOTTPREL_PREL19), /* name */
+ false, /* partial_inplace */
+ 0x1ffffc, /* src_mask */
+ 0x1ffffc, /* dst_mask */
+ false), /* pcrel_offset */
+
+ HOWTO64 (AARCH64_R (TLSIE_MOVW_GOTTPREL_G0_NC), /* type */
+ 0, /* rightshift */
+ 4, /* size */
+ 16, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (TLSIE_MOVW_GOTTPREL_G0_NC), /* name */
+ false, /* partial_inplace */
+ 0xffff, /* src_mask */
+ 0xffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ HOWTO64 (AARCH64_R (TLSIE_MOVW_GOTTPREL_G1), /* type */
+ 16, /* rightshift */
+ 4, /* size */
+ 16, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_unsigned, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (TLSIE_MOVW_GOTTPREL_G1), /* name */
+ false, /* partial_inplace */
+ 0xffff, /* src_mask */
+ 0xffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* ADD: bit[23:12] of byte offset to module TLS base address. */
+ HOWTO (AARCH64_R (TLSLD_ADD_DTPREL_HI12), /* type */
+ 12, /* rightshift */
+ 4, /* size */
+ 12, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_unsigned, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (TLSLD_ADD_DTPREL_HI12), /* name */
+ false, /* partial_inplace */
+ 0xfff, /* src_mask */
+ 0xfff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* Unsigned 12 bit byte offset to module TLS base address. */
+ HOWTO (AARCH64_R (TLSLD_ADD_DTPREL_LO12), /* type */
+ 0, /* rightshift */
+ 4, /* size */
+ 12, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_unsigned, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (TLSLD_ADD_DTPREL_LO12), /* name */
+ false, /* partial_inplace */
+ 0xfff, /* src_mask */
+ 0xfff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* No overflow check version of BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12. */
+ HOWTO (AARCH64_R (TLSLD_ADD_DTPREL_LO12_NC), /* type */
+ 0, /* rightshift */
+ 4, /* size */
+ 12, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (TLSLD_ADD_DTPREL_LO12_NC), /* name */
+ false, /* partial_inplace */
+ 0xfff, /* src_mask */
+ 0xfff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* ADD: GOT offset G(S) & 0xff8 [no overflow check] */
+ HOWTO (AARCH64_R (TLSLD_ADD_LO12_NC), /* type */
+ 0, /* rightshift */
+ 4, /* size */
+ 12, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (TLSLD_ADD_LO12_NC), /* name */
+ false, /* partial_inplace */
+ 0xfff, /* src_mask */
+ 0xfff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* Get to the page for the GOT entry for the symbol
+ (G(S) - P) using an ADRP instruction. */
+ HOWTO (AARCH64_R (TLSLD_ADR_PAGE21), /* type */
+ 12, /* rightshift */
+ 4, /* size */
+ 21, /* bitsize */
+ true, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (TLSLD_ADR_PAGE21), /* name */
+ false, /* partial_inplace */
+ 0x1fffff, /* src_mask */
+ 0x1fffff, /* dst_mask */
+ true), /* pcrel_offset */
+
+ HOWTO (AARCH64_R (TLSLD_ADR_PREL21), /* type */
+ 0, /* rightshift */
+ 4, /* size */
+ 21, /* bitsize */
+ true, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (TLSLD_ADR_PREL21), /* name */
+ false, /* partial_inplace */
+ 0x1fffff, /* src_mask */
+ 0x1fffff, /* dst_mask */
+ true), /* pcrel_offset */
+
+ /* LD/ST16: bit[11:1] of byte offset to module TLS base address. */
+ HOWTO64 (AARCH64_R (TLSLD_LDST16_DTPREL_LO12), /* type */
+ 1, /* rightshift */
+ 4, /* size */
+ 11, /* bitsize */
+ false, /* pc_relative */
+ 10, /* bitpos */
+ complain_overflow_unsigned, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (TLSLD_LDST16_DTPREL_LO12), /* name */
+ false, /* partial_inplace */
+ 0x1ffc00, /* src_mask */
+ 0x1ffc00, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* Same as BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12, but no overflow check. */
+ HOWTO64 (AARCH64_R (TLSLD_LDST16_DTPREL_LO12_NC), /* type */
+ 1, /* rightshift */
+ 4, /* size */
+ 11, /* bitsize */
+ false, /* pc_relative */
+ 10, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (TLSLD_LDST16_DTPREL_LO12_NC), /* name */
+ false, /* partial_inplace */
+ 0x1ffc00, /* src_mask */
+ 0x1ffc00, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* LD/ST32: bit[11:2] of byte offset to module TLS base address. */
+ HOWTO64 (AARCH64_R (TLSLD_LDST32_DTPREL_LO12), /* type */
+ 2, /* rightshift */
+ 4, /* size */
+ 10, /* bitsize */
+ false, /* pc_relative */
+ 10, /* bitpos */
+ complain_overflow_unsigned, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (TLSLD_LDST32_DTPREL_LO12), /* name */
+ false, /* partial_inplace */
+ 0x3ffc00, /* src_mask */
+ 0x3ffc00, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* Same as BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12, but no overflow check. */
+ HOWTO64 (AARCH64_R (TLSLD_LDST32_DTPREL_LO12_NC), /* type */
+ 2, /* rightshift */
+ 4, /* size */
+ 10, /* bitsize */
+ false, /* pc_relative */
+ 10, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (TLSLD_LDST32_DTPREL_LO12_NC), /* name */
+ false, /* partial_inplace */
+ 0xffc00, /* src_mask */
+ 0xffc00, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* LD/ST64: bit[11:3] of byte offset to module TLS base address. */
+ HOWTO64 (AARCH64_R (TLSLD_LDST64_DTPREL_LO12), /* type */
+ 3, /* rightshift */
+ 4, /* size */
+ 9, /* bitsize */
+ false, /* pc_relative */
+ 10, /* bitpos */
+ complain_overflow_unsigned, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (TLSLD_LDST64_DTPREL_LO12), /* name */
+ false, /* partial_inplace */
+ 0x3ffc00, /* src_mask */
+ 0x3ffc00, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* Same as BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12, but no overflow check. */
+ HOWTO64 (AARCH64_R (TLSLD_LDST64_DTPREL_LO12_NC), /* type */
+ 3, /* rightshift */
+ 4, /* size */
+ 9, /* bitsize */
+ false, /* pc_relative */
+ 10, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (TLSLD_LDST64_DTPREL_LO12_NC), /* name */
+ false, /* partial_inplace */
+ 0x7fc00, /* src_mask */
+ 0x7fc00, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* LD/ST8: bit[11:0] of byte offset to module TLS base address. */
+ HOWTO64 (AARCH64_R (TLSLD_LDST8_DTPREL_LO12), /* type */
+ 0, /* rightshift */
+ 4, /* size */
+ 12, /* bitsize */
+ false, /* pc_relative */
+ 10, /* bitpos */
+ complain_overflow_unsigned, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (TLSLD_LDST8_DTPREL_LO12), /* name */
+ false, /* partial_inplace */
+ 0x3ffc00, /* src_mask */
+ 0x3ffc00, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* Same as BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12, but no overflow check. */
+ HOWTO64 (AARCH64_R (TLSLD_LDST8_DTPREL_LO12_NC), /* type */
+ 0, /* rightshift */
+ 4, /* size */
+ 12, /* bitsize */
+ false, /* pc_relative */
+ 10, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (TLSLD_LDST8_DTPREL_LO12_NC), /* name */
+ false, /* partial_inplace */
+ 0x3ffc00, /* src_mask */
+ 0x3ffc00, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* MOVZ: bit[15:0] of byte offset to module TLS base address. */
+ HOWTO (AARCH64_R (TLSLD_MOVW_DTPREL_G0), /* type */
+ 0, /* rightshift */
+ 4, /* size */
+ 16, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_unsigned, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (TLSLD_MOVW_DTPREL_G0), /* name */
+ false, /* partial_inplace */
+ 0xffff, /* src_mask */
+ 0xffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* No overflow check version of BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0. */
+ HOWTO (AARCH64_R (TLSLD_MOVW_DTPREL_G0_NC), /* type */
+ 0, /* rightshift */
+ 4, /* size */
+ 16, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (TLSLD_MOVW_DTPREL_G0_NC), /* name */
+ false, /* partial_inplace */
+ 0xffff, /* src_mask */
+ 0xffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* MOVZ: bit[31:16] of byte offset to module TLS base address. */
+ HOWTO (AARCH64_R (TLSLD_MOVW_DTPREL_G1), /* type */
+ 16, /* rightshift */
+ 4, /* size */
+ 16, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_unsigned, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (TLSLD_MOVW_DTPREL_G1), /* name */
+ false, /* partial_inplace */
+ 0xffff, /* src_mask */
+ 0xffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* No overflow check version of BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1. */
+ HOWTO64 (AARCH64_R (TLSLD_MOVW_DTPREL_G1_NC), /* type */
+ 16, /* rightshift */
+ 4, /* size */
+ 16, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (TLSLD_MOVW_DTPREL_G1_NC), /* name */
+ false, /* partial_inplace */
+ 0xffff, /* src_mask */
+ 0xffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* MOVZ: bit[47:32] of byte offset to module TLS base address. */
+ HOWTO64 (AARCH64_R (TLSLD_MOVW_DTPREL_G2), /* type */
+ 32, /* rightshift */
+ 4, /* size */
+ 16, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_unsigned, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (TLSLD_MOVW_DTPREL_G2), /* name */
+ false, /* partial_inplace */
+ 0xffff, /* src_mask */
+ 0xffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ HOWTO64 (AARCH64_R (TLSLE_MOVW_TPREL_G2), /* type */
+ 32, /* rightshift */
+ 4, /* size */
+ 16, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_unsigned, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (TLSLE_MOVW_TPREL_G2), /* name */
+ false, /* partial_inplace */
+ 0xffff, /* src_mask */
+ 0xffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ HOWTO (AARCH64_R (TLSLE_MOVW_TPREL_G1), /* type */
+ 16, /* rightshift */
+ 4, /* size */
+ 16, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (TLSLE_MOVW_TPREL_G1), /* name */
+ false, /* partial_inplace */
+ 0xffff, /* src_mask */
+ 0xffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ HOWTO64 (AARCH64_R (TLSLE_MOVW_TPREL_G1_NC), /* type */
+ 16, /* rightshift */
+ 4, /* size */
+ 16, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (TLSLE_MOVW_TPREL_G1_NC), /* name */
+ false, /* partial_inplace */
+ 0xffff, /* src_mask */
+ 0xffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ HOWTO (AARCH64_R (TLSLE_MOVW_TPREL_G0), /* type */
+ 0, /* rightshift */
+ 4, /* size */
+ 16, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (TLSLE_MOVW_TPREL_G0), /* name */
+ false, /* partial_inplace */
+ 0xffff, /* src_mask */
+ 0xffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ HOWTO (AARCH64_R (TLSLE_MOVW_TPREL_G0_NC), /* type */
+ 0, /* rightshift */
+ 4, /* size */
+ 16, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (TLSLE_MOVW_TPREL_G0_NC), /* name */
+ false, /* partial_inplace */
+ 0xffff, /* src_mask */
+ 0xffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ HOWTO (AARCH64_R (TLSLE_ADD_TPREL_HI12), /* type */
+ 12, /* rightshift */
+ 4, /* size */
+ 12, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_unsigned, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (TLSLE_ADD_TPREL_HI12), /* name */
+ false, /* partial_inplace */
+ 0xfff, /* src_mask */
+ 0xfff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ HOWTO (AARCH64_R (TLSLE_ADD_TPREL_LO12), /* type */
+ 0, /* rightshift */
+ 4, /* size */
+ 12, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_unsigned, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (TLSLE_ADD_TPREL_LO12), /* name */
+ false, /* partial_inplace */
+ 0xfff, /* src_mask */
+ 0xfff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ HOWTO (AARCH64_R (TLSLE_ADD_TPREL_LO12_NC), /* type */
+ 0, /* rightshift */
+ 4, /* size */
+ 12, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (TLSLE_ADD_TPREL_LO12_NC), /* name */
+ false, /* partial_inplace */
+ 0xfff, /* src_mask */
+ 0xfff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* LD/ST16: bit[11:1] of byte offset to module TLS base address. */
+ HOWTO (AARCH64_R (TLSLE_LDST16_TPREL_LO12), /* type */
+ 1, /* rightshift */
+ 4, /* size */
+ 11, /* bitsize */
+ false, /* pc_relative */
+ 10, /* bitpos */
+ complain_overflow_unsigned, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (TLSLE_LDST16_TPREL_LO12), /* name */
+ false, /* partial_inplace */
+ 0x1ffc00, /* src_mask */
+ 0x1ffc00, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* Same as BFD_RELOC_AARCH64_TLSLE_LDST16_TPREL_LO12, but no overflow check. */
+ HOWTO (AARCH64_R (TLSLE_LDST16_TPREL_LO12_NC), /* type */
+ 1, /* rightshift */
+ 4, /* size */
+ 11, /* bitsize */
+ false, /* pc_relative */
+ 10, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (TLSLE_LDST16_TPREL_LO12_NC), /* name */
+ false, /* partial_inplace */
+ 0x1ffc00, /* src_mask */
+ 0x1ffc00, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* LD/ST32: bit[11:2] of byte offset to module TLS base address. */
+ HOWTO (AARCH64_R (TLSLE_LDST32_TPREL_LO12), /* type */
+ 2, /* rightshift */
+ 4, /* size */
+ 10, /* bitsize */
+ false, /* pc_relative */
+ 10, /* bitpos */
+ complain_overflow_unsigned, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (TLSLE_LDST32_TPREL_LO12), /* name */
+ false, /* partial_inplace */
+ 0xffc00, /* src_mask */
+ 0xffc00, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* Same as BFD_RELOC_AARCH64_TLSLE_LDST32_TPREL_LO12, but no overflow check. */
+ HOWTO (AARCH64_R (TLSLE_LDST32_TPREL_LO12_NC), /* type */
+ 2, /* rightshift */
+ 4, /* size */
+ 10, /* bitsize */
+ false, /* pc_relative */
+ 10, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (TLSLE_LDST32_TPREL_LO12_NC), /* name */
+ false, /* partial_inplace */
+ 0xffc00, /* src_mask */
+ 0xffc00, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* LD/ST64: bit[11:3] of byte offset to module TLS base address. */
+ HOWTO (AARCH64_R (TLSLE_LDST64_TPREL_LO12), /* type */
+ 3, /* rightshift */
+ 4, /* size */
+ 9, /* bitsize */
+ false, /* pc_relative */
+ 10, /* bitpos */
+ complain_overflow_unsigned, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (TLSLE_LDST64_TPREL_LO12), /* name */
+ false, /* partial_inplace */
+ 0x7fc00, /* src_mask */
+ 0x7fc00, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* Same as BFD_RELOC_AARCH64_TLSLE_LDST64_TPREL_LO12, but no overflow check. */
+ HOWTO (AARCH64_R (TLSLE_LDST64_TPREL_LO12_NC), /* type */
+ 3, /* rightshift */
+ 4, /* size */
+ 9, /* bitsize */
+ false, /* pc_relative */
+ 10, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (TLSLE_LDST64_TPREL_LO12_NC), /* name */
+ false, /* partial_inplace */
+ 0x7fc00, /* src_mask */
+ 0x7fc00, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* LD/ST8: bit[11:0] of byte offset to module TLS base address. */
+ HOWTO (AARCH64_R (TLSLE_LDST8_TPREL_LO12), /* type */
+ 0, /* rightshift */
+ 4, /* size */
+ 12, /* bitsize */
+ false, /* pc_relative */
+ 10, /* bitpos */
+ complain_overflow_unsigned, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (TLSLE_LDST8_TPREL_LO12), /* name */
+ false, /* partial_inplace */
+ 0x3ffc00, /* src_mask */
+ 0x3ffc00, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* Same as BFD_RELOC_AARCH64_TLSLE_LDST8_TPREL_LO12, but no overflow check. */
+ HOWTO (AARCH64_R (TLSLE_LDST8_TPREL_LO12_NC), /* type */
+ 0, /* rightshift */
+ 4, /* size */
+ 12, /* bitsize */
+ false, /* pc_relative */
+ 10, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (TLSLE_LDST8_TPREL_LO12_NC), /* name */
+ false, /* partial_inplace */
+ 0x3ffc00, /* src_mask */
+ 0x3ffc00, /* dst_mask */
+ false), /* pcrel_offset */
+
+ HOWTO (AARCH64_R (TLSDESC_LD_PREL19), /* type */
+ 2, /* rightshift */
+ 4, /* size */
+ 19, /* bitsize */
+ true, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (TLSDESC_LD_PREL19), /* name */
+ false, /* partial_inplace */
+ 0x0ffffe0, /* src_mask */
+ 0x0ffffe0, /* dst_mask */
+ true), /* pcrel_offset */
+
+ HOWTO (AARCH64_R (TLSDESC_ADR_PREL21), /* type */
+ 0, /* rightshift */
+ 4, /* size */
+ 21, /* bitsize */
+ true, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (TLSDESC_ADR_PREL21), /* name */
+ false, /* partial_inplace */
+ 0x1fffff, /* src_mask */
+ 0x1fffff, /* dst_mask */
+ true), /* pcrel_offset */
+
+ /* Get to the page for the GOT entry for the symbol
+ (G(S) - P) using an ADRP instruction. */
+ HOWTO (AARCH64_R (TLSDESC_ADR_PAGE21), /* type */
+ 12, /* rightshift */
+ 4, /* size */
+ 21, /* bitsize */
+ true, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (TLSDESC_ADR_PAGE21), /* name */
+ false, /* partial_inplace */
+ 0x1fffff, /* src_mask */
+ 0x1fffff, /* dst_mask */
+ true), /* pcrel_offset */
+
+ /* LD64: GOT offset G(S) & 0xff8. */
+ HOWTO64 (AARCH64_R (TLSDESC_LD64_LO12), /* type */
+ 3, /* rightshift */
+ 4, /* size */
+ 12, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (TLSDESC_LD64_LO12), /* name */
+ false, /* partial_inplace */
+ 0xff8, /* src_mask */
+ 0xff8, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* LD32: GOT offset G(S) & 0xffc. */
+ HOWTO32 (AARCH64_R (TLSDESC_LD32_LO12_NC), /* type */
+ 2, /* rightshift */
+ 4, /* size */
+ 12, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (TLSDESC_LD32_LO12_NC), /* name */
+ false, /* partial_inplace */
+ 0xffc, /* src_mask */
+ 0xffc, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* ADD: GOT offset G(S) & 0xfff. */
+ HOWTO (AARCH64_R (TLSDESC_ADD_LO12), /* type */
+ 0, /* rightshift */
+ 4, /* size */
+ 12, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont,/* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (TLSDESC_ADD_LO12), /* name */
+ false, /* partial_inplace */
+ 0xfff, /* src_mask */
+ 0xfff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ HOWTO64 (AARCH64_R (TLSDESC_OFF_G1), /* type */
+ 16, /* rightshift */
+ 4, /* size */
+ 12, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_unsigned, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (TLSDESC_OFF_G1), /* name */
+ false, /* partial_inplace */
+ 0xffff, /* src_mask */
+ 0xffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ HOWTO64 (AARCH64_R (TLSDESC_OFF_G0_NC), /* type */
+ 0, /* rightshift */
+ 4, /* size */
+ 12, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (TLSDESC_OFF_G0_NC), /* name */
+ false, /* partial_inplace */
+ 0xffff, /* src_mask */
+ 0xffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ HOWTO64 (AARCH64_R (TLSDESC_LDR), /* type */
+ 0, /* rightshift */
+ 4, /* size */
+ 12, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (TLSDESC_LDR), /* name */
+ false, /* partial_inplace */
+ 0x0, /* src_mask */
+ 0x0, /* dst_mask */
+ false), /* pcrel_offset */
+
+ HOWTO64 (AARCH64_R (TLSDESC_ADD), /* type */
+ 0, /* rightshift */
+ 4, /* size */
+ 12, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (TLSDESC_ADD), /* name */
+ false, /* partial_inplace */
+ 0x0, /* src_mask */
+ 0x0, /* dst_mask */
+ false), /* pcrel_offset */
+
+ HOWTO (AARCH64_R (TLSDESC_CALL), /* type */
+ 0, /* rightshift */
+ 4, /* size */
+ 0, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (TLSDESC_CALL), /* name */
+ false, /* partial_inplace */
+ 0x0, /* src_mask */
+ 0x0, /* dst_mask */
+ false), /* pcrel_offset */
+
+ HOWTO (AARCH64_R (COPY), /* type */
+ 0, /* rightshift */
+ 4, /* size */
+ 64, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (COPY), /* name */
+ true, /* partial_inplace */
+ 0xffffffff, /* src_mask */
+ 0xffffffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ HOWTO (AARCH64_R (GLOB_DAT), /* type */
+ 0, /* rightshift */
+ 4, /* size */
+ 64, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (GLOB_DAT), /* name */
+ true, /* partial_inplace */
+ 0xffffffff, /* src_mask */
+ 0xffffffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ HOWTO (AARCH64_R (JUMP_SLOT), /* type */
+ 0, /* rightshift */
+ 4, /* size */
+ 64, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (JUMP_SLOT), /* name */
+ true, /* partial_inplace */
+ 0xffffffff, /* src_mask */
+ 0xffffffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ HOWTO (AARCH64_R (RELATIVE), /* type */
+ 0, /* rightshift */
+ 4, /* size */
+ 64, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (RELATIVE), /* name */
+ true, /* partial_inplace */
+ ALL_ONES, /* src_mask */
+ ALL_ONES, /* dst_mask */
+ false), /* pcrel_offset */
+
+ HOWTO (AARCH64_R (TLS_DTPMOD), /* type */
+ 0, /* rightshift */
+ 4, /* size */
+ 64, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+#if ARCH_SIZE == 64
+ AARCH64_R_STR (TLS_DTPMOD64), /* name */
+#else
+ AARCH64_R_STR (TLS_DTPMOD), /* name */
+#endif
+ false, /* partial_inplace */
+ 0, /* src_mask */
+ ALL_ONES, /* dst_mask */
+ false), /* pc_reloffset */
+
+ HOWTO (AARCH64_R (TLS_DTPREL), /* type */
+ 0, /* rightshift */
+ 4, /* size */
+ 64, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+#if ARCH_SIZE == 64
+ AARCH64_R_STR (TLS_DTPREL64), /* name */
+#else
+ AARCH64_R_STR (TLS_DTPREL), /* name */
+#endif
+ false, /* partial_inplace */
+ 0, /* src_mask */
+ ALL_ONES, /* dst_mask */
+ false), /* pcrel_offset */
+
+ HOWTO (AARCH64_R (TLS_TPREL), /* type */
+ 0, /* rightshift */
+ 4, /* size */
+ 64, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+#if ARCH_SIZE == 64
+ AARCH64_R_STR (TLS_TPREL64), /* name */
+#else
+ AARCH64_R_STR (TLS_TPREL), /* name */
+#endif
+ false, /* partial_inplace */
+ 0, /* src_mask */
+ ALL_ONES, /* dst_mask */
+ false), /* pcrel_offset */
+
+ HOWTO (AARCH64_R (TLSDESC), /* type */
+ 0, /* rightshift */
+ 4, /* size */
+ 64, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (TLSDESC), /* name */
+ false, /* partial_inplace */
+ 0, /* src_mask */
+ ALL_ONES, /* dst_mask */
+ false), /* pcrel_offset */
+
+ HOWTO (AARCH64_R (IRELATIVE), /* type */
+ 0, /* rightshift */
+ 4, /* size */
+ 64, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ AARCH64_R_STR (IRELATIVE), /* name */
+ false, /* partial_inplace */
+ 0, /* src_mask */
+ ALL_ONES, /* dst_mask */
+ false), /* pcrel_offset */
+
+ EMPTY_HOWTO (0),
+};
+
+static reloc_howto_type elfNN_aarch64_howto_none =
+ HOWTO (R_AARCH64_NONE, /* type */
+ 0, /* rightshift */
+ 0, /* size */
+ 0, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont,/* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_AARCH64_NONE", /* name */
+ false, /* partial_inplace */
+ 0, /* src_mask */
+ 0, /* dst_mask */
+ false); /* pcrel_offset */
+
+/* Given HOWTO, return the bfd internal relocation enumerator. */
+
+static bfd_reloc_code_real_type
+elfNN_aarch64_bfd_reloc_from_howto (reloc_howto_type *howto)
+{
+ const int size
+ = (int) ARRAY_SIZE (elfNN_aarch64_howto_table);
+ const ptrdiff_t offset
+ = howto - elfNN_aarch64_howto_table;
+
+ if (offset > 0 && offset < size - 1)
+ return BFD_RELOC_AARCH64_RELOC_START + offset;
+
+ if (howto == &elfNN_aarch64_howto_none)
+ return BFD_RELOC_AARCH64_NONE;
+
+ return BFD_RELOC_AARCH64_RELOC_START;
+}
+
+/* Given R_TYPE, return the bfd internal relocation enumerator. */
+
+static bfd_reloc_code_real_type
+elfNN_aarch64_bfd_reloc_from_type (bfd *abfd, unsigned int r_type)
+{
+ static bool initialized_p = false;
+ /* Indexed by R_TYPE, values are offsets in the howto_table. */
+ static unsigned int offsets[R_AARCH64_end];
+
+ if (!initialized_p)
+ {
+ unsigned int i;
+
+ for (i = 1; i < ARRAY_SIZE (elfNN_aarch64_howto_table) - 1; ++i)
+ if (elfNN_aarch64_howto_table[i].type != 0)
+ offsets[elfNN_aarch64_howto_table[i].type] = i;
+
+ initialized_p = true;
+ }
+
+ if (r_type == R_AARCH64_NONE || r_type == R_AARCH64_NULL)
+ return BFD_RELOC_AARCH64_NONE;
+
+ /* PR 17512: file: b371e70a. */
+ if (r_type >= R_AARCH64_end)
+ {
+ _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
+ abfd, r_type);
+ bfd_set_error (bfd_error_bad_value);
+ return BFD_RELOC_AARCH64_NONE;
+ }
+
+ return BFD_RELOC_AARCH64_RELOC_START + offsets[r_type];
+}
+
+struct elf_aarch64_reloc_map
+{
+ bfd_reloc_code_real_type from;
+ bfd_reloc_code_real_type to;
+};
+
+/* Map bfd generic reloc to AArch64-specific reloc. */
+static const struct elf_aarch64_reloc_map elf_aarch64_reloc_map[] =
+{
+ {BFD_RELOC_NONE, BFD_RELOC_AARCH64_NONE},
+
+ /* Basic data relocations. */
+ {BFD_RELOC_CTOR, BFD_RELOC_AARCH64_NN},
+ {BFD_RELOC_64, BFD_RELOC_AARCH64_64},
+ {BFD_RELOC_32, BFD_RELOC_AARCH64_32},
+ {BFD_RELOC_16, BFD_RELOC_AARCH64_16},
+ {BFD_RELOC_64_PCREL, BFD_RELOC_AARCH64_64_PCREL},
+ {BFD_RELOC_32_PCREL, BFD_RELOC_AARCH64_32_PCREL},
+ {BFD_RELOC_16_PCREL, BFD_RELOC_AARCH64_16_PCREL},
+};
+
+/* Given the bfd internal relocation enumerator in CODE, return the
+ corresponding howto entry. */
+
+static reloc_howto_type *
+elfNN_aarch64_howto_from_bfd_reloc (bfd_reloc_code_real_type code)
+{
+ unsigned int i;
+
+ /* Convert bfd generic reloc to AArch64-specific reloc. */
+ if (code < BFD_RELOC_AARCH64_RELOC_START
+ || code > BFD_RELOC_AARCH64_RELOC_END)
+ for (i = 0; i < ARRAY_SIZE (elf_aarch64_reloc_map); i++)
+ if (elf_aarch64_reloc_map[i].from == code)
+ {
+ code = elf_aarch64_reloc_map[i].to;
+ break;
+ }
+
+ if (code > BFD_RELOC_AARCH64_RELOC_START
+ && code < BFD_RELOC_AARCH64_RELOC_END)
+ if (elfNN_aarch64_howto_table[code - BFD_RELOC_AARCH64_RELOC_START].type)
+ return &elfNN_aarch64_howto_table[code - BFD_RELOC_AARCH64_RELOC_START];
+
+ if (code == BFD_RELOC_AARCH64_NONE)
+ return &elfNN_aarch64_howto_none;
+
+ return NULL;
+}
+
+static reloc_howto_type *
+elfNN_aarch64_howto_from_type (bfd *abfd, unsigned int r_type)
+{
+ bfd_reloc_code_real_type val;
+ reloc_howto_type *howto;
+
+#if ARCH_SIZE == 32
+ if (r_type > 256)
+ {
+ bfd_set_error (bfd_error_bad_value);
+ return NULL;
+ }
+#endif
+
+ if (r_type == R_AARCH64_NONE)
+ return &elfNN_aarch64_howto_none;
+
+ val = elfNN_aarch64_bfd_reloc_from_type (abfd, r_type);
+ howto = elfNN_aarch64_howto_from_bfd_reloc (val);
+
+ if (howto != NULL)
+ return howto;
+
+ bfd_set_error (bfd_error_bad_value);
+ return NULL;
+}
+
+static bool
+elfNN_aarch64_info_to_howto (bfd *abfd, arelent *bfd_reloc,
+ Elf_Internal_Rela *elf_reloc)
+{
+ unsigned int r_type;
+
+ r_type = ELFNN_R_TYPE (elf_reloc->r_info);
+ bfd_reloc->howto = elfNN_aarch64_howto_from_type (abfd, r_type);
+
+ if (bfd_reloc->howto == NULL)
+ {
+ /* xgettext:c-format */
+ _bfd_error_handler (_("%pB: unsupported relocation type %#x"), abfd, r_type);
+ return false;
+ }
+ return true;
+}
+
+static reloc_howto_type *
+elfNN_aarch64_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
+ bfd_reloc_code_real_type code)
+{
+ reloc_howto_type *howto = elfNN_aarch64_howto_from_bfd_reloc (code);
+
+ if (howto != NULL)
+ return howto;
+
+ bfd_set_error (bfd_error_bad_value);
+ return NULL;
+}
+
+static reloc_howto_type *
+elfNN_aarch64_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
+ const char *r_name)
+{
+ unsigned int i;
+
+ for (i = 1; i < ARRAY_SIZE (elfNN_aarch64_howto_table) - 1; ++i)
+ if (elfNN_aarch64_howto_table[i].name != NULL
+ && strcasecmp (elfNN_aarch64_howto_table[i].name, r_name) == 0)
+ return &elfNN_aarch64_howto_table[i];
+
+ return NULL;
+}
+
+#define TARGET_LITTLE_SYM aarch64_elfNN_le_vec
+#define TARGET_LITTLE_NAME "elfNN-littleaarch64"
+#define TARGET_BIG_SYM aarch64_elfNN_be_vec
+#define TARGET_BIG_NAME "elfNN-bigaarch64"
+
+/* The linker script knows the section names for placement.
+ The entry_names are used to do simple name mangling on the stubs.
+ Given a function name, and its type, the stub can be found. The
+ name can be changed. The only requirement is the %s be present. */
+#define STUB_ENTRY_NAME "__%s_veneer"
+
+/* The name of the dynamic interpreter. This is put in the .interp
+ section. */
+#define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1"
+
+#define AARCH64_MAX_FWD_BRANCH_OFFSET \
+ (((1 << 25) - 1) << 2)
+#define AARCH64_MAX_BWD_BRANCH_OFFSET \
+ (-((1 << 25) << 2))
+
+#define AARCH64_MAX_ADRP_IMM ((1 << 20) - 1)
+#define AARCH64_MIN_ADRP_IMM (-(1 << 20))
+
+static int
+aarch64_valid_for_adrp_p (bfd_vma value, bfd_vma place)
+{
+ bfd_signed_vma offset = (bfd_signed_vma) (PG (value) - PG (place)) >> 12;
+ return offset <= AARCH64_MAX_ADRP_IMM && offset >= AARCH64_MIN_ADRP_IMM;
+}
+
+static int
+aarch64_valid_branch_p (bfd_vma value, bfd_vma place)
+{
+ bfd_signed_vma offset = (bfd_signed_vma) (value - place);
+ return (offset <= AARCH64_MAX_FWD_BRANCH_OFFSET
+ && offset >= AARCH64_MAX_BWD_BRANCH_OFFSET);
+}
+
+static const uint32_t aarch64_adrp_branch_stub [] =
+{
+ 0x90000010, /* adrp ip0, X */
+ /* R_AARCH64_ADR_HI21_PCREL(X) */
+ 0x91000210, /* add ip0, ip0, :lo12:X */
+ /* R_AARCH64_ADD_ABS_LO12_NC(X) */
+ 0xd61f0200, /* br ip0 */
+};
+
+static const uint32_t aarch64_long_branch_stub[] =
+{
+#if ARCH_SIZE == 64
+ 0x58000090, /* ldr ip0, 1f */
+#else
+ 0x18000090, /* ldr wip0, 1f */
+#endif
+ 0x10000011, /* adr ip1, #0 */
+ 0x8b110210, /* add ip0, ip0, ip1 */
+ 0xd61f0200, /* br ip0 */
+ 0x00000000, /* 1: .xword or .word
+ R_AARCH64_PRELNN(X) + 12
+ */
+ 0x00000000,
+};
+
+static const uint32_t aarch64_erratum_835769_stub[] =
+{
+ 0x00000000, /* Placeholder for multiply accumulate. */
+ 0x14000000, /* b <label> */
+};
+
+static const uint32_t aarch64_erratum_843419_stub[] =
+{
+ 0x00000000, /* Placeholder for LDR instruction. */
+ 0x14000000, /* b <label> */
+};
+
+/* Section name for stubs is the associated section name plus this
+ string. */
+#define STUB_SUFFIX ".stub"
+
+enum elf_aarch64_stub_type
+{
+ aarch64_stub_none,
+ aarch64_stub_adrp_branch,
+ aarch64_stub_long_branch,
+ aarch64_stub_erratum_835769_veneer,
+ aarch64_stub_erratum_843419_veneer,
+};
+
+struct elf_aarch64_stub_hash_entry
+{
+ /* Base hash table entry structure. */
+ struct bfd_hash_entry root;
+
+ /* The stub section. */
+ asection *stub_sec;
+
+ /* Offset within stub_sec of the beginning of this stub. */
+ bfd_vma stub_offset;
+
+ /* Given the symbol's value and its section we can determine its final
+ value when building the stubs (so the stub knows where to jump). */
+ bfd_vma target_value;
+ asection *target_section;
+
+ enum elf_aarch64_stub_type stub_type;
+
+ /* The symbol table entry, if any, that this was derived from. */
+ struct elf_aarch64_link_hash_entry *h;
+
+ /* Destination symbol type */
+ unsigned char st_type;
+
+ /* Where this stub is being called from, or, in the case of combined
+ stub sections, the first input section in the group. */
+ asection *id_sec;
+
+ /* The name for the local symbol at the start of this stub. The
+ stub name in the hash table has to be unique; this does not, so
+ it can be friendlier. */
+ char *output_name;
+
+ /* The instruction which caused this stub to be generated (only valid for
+ erratum 835769 workaround stubs at present). */
+ uint32_t veneered_insn;
+
+ /* In an erratum 843419 workaround stub, the ADRP instruction offset. */
+ bfd_vma adrp_offset;
+};
+
+/* Used to build a map of a section. This is required for mixed-endian
+ code/data. */
+
+typedef struct elf_elf_section_map
+{
+ bfd_vma vma;
+ char type;
+}
+elf_aarch64_section_map;
+
+
+typedef struct _aarch64_elf_section_data
+{
+ struct bfd_elf_section_data elf;
+ unsigned int mapcount;
+ unsigned int mapsize;
+ elf_aarch64_section_map *map;
+}
+_aarch64_elf_section_data;
+
+#define elf_aarch64_section_data(sec) \
+ ((_aarch64_elf_section_data *) elf_section_data (sec))
+
+/* The size of the thread control block which is defined to be two pointers. */
+#define TCB_SIZE (ARCH_SIZE/8)*2
+
+struct elf_aarch64_local_symbol
+{
+ unsigned int got_type;
+ bfd_signed_vma got_refcount;
+ bfd_vma got_offset;
+
+ /* Offset of the GOTPLT entry reserved for the TLS descriptor. The
+ offset is from the end of the jump table and reserved entries
+ within the PLTGOT.
+
+ The magic value (bfd_vma) -1 indicates that an offset has not be
+ allocated. */
+ bfd_vma tlsdesc_got_jump_table_offset;
+};
+
+struct elf_aarch64_obj_tdata
+{
+ struct elf_obj_tdata root;
+
+ /* local symbol descriptors */
+ struct elf_aarch64_local_symbol *locals;
+
+ /* Zero to warn when linking objects with incompatible enum sizes. */
+ int no_enum_size_warning;
+
+ /* Zero to warn when linking objects with incompatible wchar_t sizes. */
+ int no_wchar_size_warning;
+
+ /* All GNU_PROPERTY_AARCH64_FEATURE_1_AND properties. */
+ uint32_t gnu_and_prop;
+
+ /* Zero to warn when linking objects with incompatible
+ GNU_PROPERTY_AARCH64_FEATURE_1_BTI. */
+ int no_bti_warn;
+
+ /* PLT type based on security. */
+ aarch64_plt_type plt_type;
+};
+
+#define elf_aarch64_tdata(bfd) \
+ ((struct elf_aarch64_obj_tdata *) (bfd)->tdata.any)
+
+#define elf_aarch64_locals(bfd) (elf_aarch64_tdata (bfd)->locals)
+
+#define is_aarch64_elf(bfd) \
+ (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
+ && elf_tdata (bfd) != NULL \
+ && elf_object_id (bfd) == AARCH64_ELF_DATA)
+
+static bool
+elfNN_aarch64_mkobject (bfd *abfd)
+{
+ return bfd_elf_allocate_object (abfd, sizeof (struct elf_aarch64_obj_tdata),
+ AARCH64_ELF_DATA);
+}
+
+#define elf_aarch64_hash_entry(ent) \
+ ((struct elf_aarch64_link_hash_entry *)(ent))
+
+#define GOT_UNKNOWN 0
+#define GOT_NORMAL 1
+#define GOT_TLS_GD 2
+#define GOT_TLS_IE 4
+#define GOT_TLSDESC_GD 8
+
+#define GOT_TLS_GD_ANY_P(type) ((type & GOT_TLS_GD) || (type & GOT_TLSDESC_GD))
+
+/* AArch64 ELF linker hash entry. */
+struct elf_aarch64_link_hash_entry
+{
+ struct elf_link_hash_entry root;
+
+ /* Since PLT entries have variable size, we need to record the
+ index into .got.plt instead of recomputing it from the PLT
+ offset. */
+ bfd_signed_vma plt_got_offset;
+
+ /* Bit mask representing the type of GOT entry(s) if any required by
+ this symbol. */
+ unsigned int got_type;
+
+ /* TRUE if symbol is defined as a protected symbol. */
+ unsigned int def_protected : 1;
+
+ /* A pointer to the most recently used stub hash entry against this
+ symbol. */
+ struct elf_aarch64_stub_hash_entry *stub_cache;
+
+ /* Offset of the GOTPLT entry reserved for the TLS descriptor. The offset
+ is from the end of the jump table and reserved entries within the PLTGOT.
+
+ The magic value (bfd_vma) -1 indicates that an offset has not
+ be allocated. */
+ bfd_vma tlsdesc_got_jump_table_offset;
+};
+
+static unsigned int
+elfNN_aarch64_symbol_got_type (struct elf_link_hash_entry *h,
+ bfd *abfd,
+ unsigned long r_symndx)
+{
+ if (h)
+ return elf_aarch64_hash_entry (h)->got_type;
+
+ if (! elf_aarch64_locals (abfd))
+ return GOT_UNKNOWN;
+
+ return elf_aarch64_locals (abfd)[r_symndx].got_type;
+}
+
+/* Get the AArch64 elf linker hash table from a link_info structure. */
+#define elf_aarch64_hash_table(info) \
+ ((struct elf_aarch64_link_hash_table *) ((info)->hash))
+
+#define aarch64_stub_hash_lookup(table, string, create, copy) \
+ ((struct elf_aarch64_stub_hash_entry *) \
+ bfd_hash_lookup ((table), (string), (create), (copy)))
+
+/* AArch64 ELF linker hash table. */
+struct elf_aarch64_link_hash_table
+{
+ /* The main hash table. */
+ struct elf_link_hash_table root;
+
+ /* Nonzero to force PIC branch veneers. */
+ int pic_veneer;
+
+ /* Fix erratum 835769. */
+ int fix_erratum_835769;
+
+ /* Fix erratum 843419. */
+ erratum_84319_opts fix_erratum_843419;
+
+ /* Don't apply link-time values for dynamic relocations. */
+ int no_apply_dynamic_relocs;
+
+ /* The number of bytes in the initial entry in the PLT. */
+ bfd_size_type plt_header_size;
+
+ /* The bytes of the initial PLT entry. */
+ const bfd_byte *plt0_entry;
+
+ /* The number of bytes in the subsequent PLT entries. */
+ bfd_size_type plt_entry_size;
+
+ /* The bytes of the subsequent PLT entry. */
+ const bfd_byte *plt_entry;
+
+ /* For convenience in allocate_dynrelocs. */
+ bfd *obfd;
+
+ /* The amount of space used by the reserved portion of the sgotplt
+ section, plus whatever space is used by the jump slots. */
+ bfd_vma sgotplt_jump_table_size;
+
+ /* The stub hash table. */
+ struct bfd_hash_table stub_hash_table;
+
+ /* Linker stub bfd. */
+ bfd *stub_bfd;
+
+ /* Linker call-backs. */
+ asection *(*add_stub_section) (const char *, asection *);
+ void (*layout_sections_again) (void);
+
+ /* Array to keep track of which stub sections have been created, and
+ information on stub grouping. */
+ struct map_stub
+ {
+ /* This is the section to which stubs in the group will be
+ attached. */
+ asection *link_sec;
+ /* The stub section. */
+ asection *stub_sec;
+ } *stub_group;
+
+ /* Assorted information used by elfNN_aarch64_size_stubs. */
+ unsigned int bfd_count;
+ unsigned int top_index;
+ asection **input_list;
+
+ /* JUMP_SLOT relocs for variant PCS symbols may be present. */
+ int variant_pcs;
+
+ /* The number of bytes in the PLT enty for the TLS descriptor. */
+ bfd_size_type tlsdesc_plt_entry_size;
+
+ /* Used by local STT_GNU_IFUNC symbols. */
+ htab_t loc_hash_table;
+ void * loc_hash_memory;
+};
+
+/* Create an entry in an AArch64 ELF linker hash table. */
+
+static struct bfd_hash_entry *
+elfNN_aarch64_link_hash_newfunc (struct bfd_hash_entry *entry,
+ struct bfd_hash_table *table,
+ const char *string)
+{
+ struct elf_aarch64_link_hash_entry *ret =
+ (struct elf_aarch64_link_hash_entry *) entry;
+
+ /* Allocate the structure if it has not already been allocated by a
+ subclass. */
+ if (ret == NULL)
+ ret = bfd_hash_allocate (table,
+ sizeof (struct elf_aarch64_link_hash_entry));
+ if (ret == NULL)
+ return (struct bfd_hash_entry *) ret;
+
+ /* Call the allocation method of the superclass. */
+ ret = ((struct elf_aarch64_link_hash_entry *)
+ _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
+ table, string));
+ if (ret != NULL)
+ {
+ ret->got_type = GOT_UNKNOWN;
+ ret->def_protected = 0;
+ ret->plt_got_offset = (bfd_vma) - 1;
+ ret->stub_cache = NULL;
+ ret->tlsdesc_got_jump_table_offset = (bfd_vma) - 1;
+ }
+
+ return (struct bfd_hash_entry *) ret;
+}
+
+/* Initialize an entry in the stub hash table. */
+
+static struct bfd_hash_entry *
+stub_hash_newfunc (struct bfd_hash_entry *entry,
+ struct bfd_hash_table *table, const char *string)
+{
+ /* Allocate the structure if it has not already been allocated by a
+ subclass. */
+ if (entry == NULL)
+ {
+ entry = bfd_hash_allocate (table,
+ sizeof (struct
+ elf_aarch64_stub_hash_entry));
+ if (entry == NULL)
+ return entry;
+ }
+
+ /* Call the allocation method of the superclass. */
+ entry = bfd_hash_newfunc (entry, table, string);
+ if (entry != NULL)
+ {
+ struct elf_aarch64_stub_hash_entry *eh;
+
+ /* Initialize the local fields. */
+ eh = (struct elf_aarch64_stub_hash_entry *) entry;
+ eh->adrp_offset = 0;
+ eh->stub_sec = NULL;
+ eh->stub_offset = 0;
+ eh->target_value = 0;
+ eh->target_section = NULL;
+ eh->stub_type = aarch64_stub_none;
+ eh->h = NULL;
+ eh->id_sec = NULL;
+ }
+
+ return entry;
+}
+
+/* Compute a hash of a local hash entry. We use elf_link_hash_entry
+ for local symbol so that we can handle local STT_GNU_IFUNC symbols
+ as global symbol. We reuse indx and dynstr_index for local symbol
+ hash since they aren't used by global symbols in this backend. */
+
+static hashval_t
+elfNN_aarch64_local_htab_hash (const void *ptr)
+{
+ struct elf_link_hash_entry *h
+ = (struct elf_link_hash_entry *) ptr;
+ return ELF_LOCAL_SYMBOL_HASH (h->indx, h->dynstr_index);
+}
+
+/* Compare local hash entries. */
+
+static int
+elfNN_aarch64_local_htab_eq (const void *ptr1, const void *ptr2)
+{
+ struct elf_link_hash_entry *h1
+ = (struct elf_link_hash_entry *) ptr1;
+ struct elf_link_hash_entry *h2
+ = (struct elf_link_hash_entry *) ptr2;
+
+ return h1->indx == h2->indx && h1->dynstr_index == h2->dynstr_index;
+}
+
+/* Find and/or create a hash entry for local symbol. */
+
+static struct elf_link_hash_entry *
+elfNN_aarch64_get_local_sym_hash (struct elf_aarch64_link_hash_table *htab,
+ bfd *abfd, const Elf_Internal_Rela *rel,
+ bool create)
+{
+ struct elf_aarch64_link_hash_entry e, *ret;
+ asection *sec = abfd->sections;
+ hashval_t h = ELF_LOCAL_SYMBOL_HASH (sec->id,
+ ELFNN_R_SYM (rel->r_info));
+ void **slot;
+
+ e.root.indx = sec->id;
+ e.root.dynstr_index = ELFNN_R_SYM (rel->r_info);
+ slot = htab_find_slot_with_hash (htab->loc_hash_table, &e, h,
+ create ? INSERT : NO_INSERT);
+
+ if (!slot)
+ return NULL;
+
+ if (*slot)
+ {
+ ret = (struct elf_aarch64_link_hash_entry *) *slot;
+ return &ret->root;
+ }
+
+ ret = (struct elf_aarch64_link_hash_entry *)
+ objalloc_alloc ((struct objalloc *) htab->loc_hash_memory,
+ sizeof (struct elf_aarch64_link_hash_entry));
+ if (ret)
+ {
+ memset (ret, 0, sizeof (*ret));
+ ret->root.indx = sec->id;
+ ret->root.dynstr_index = ELFNN_R_SYM (rel->r_info);
+ ret->root.dynindx = -1;
+ *slot = ret;
+ }
+ return &ret->root;
+}
+
+/* Copy the extra info we tack onto an elf_link_hash_entry. */
+
+static void
+elfNN_aarch64_copy_indirect_symbol (struct bfd_link_info *info,
+ struct elf_link_hash_entry *dir,
+ struct elf_link_hash_entry *ind)
+{
+ struct elf_aarch64_link_hash_entry *edir, *eind;
+
+ edir = (struct elf_aarch64_link_hash_entry *) dir;
+ eind = (struct elf_aarch64_link_hash_entry *) ind;
+
+ if (ind->root.type == bfd_link_hash_indirect)
+ {
+ /* Copy over PLT info. */
+ if (dir->got.refcount <= 0)
+ {
+ edir->got_type = eind->got_type;
+ eind->got_type = GOT_UNKNOWN;
+ }
+ }
+
+ _bfd_elf_link_hash_copy_indirect (info, dir, ind);
+}
+
+/* Merge non-visibility st_other attributes. */
+
+static void
+elfNN_aarch64_merge_symbol_attribute (struct elf_link_hash_entry *h,
+ unsigned int st_other,
+ bool definition,
+ bool dynamic ATTRIBUTE_UNUSED)
+{
+ if (definition)
+ {
+ struct elf_aarch64_link_hash_entry *eh
+ = (struct elf_aarch64_link_hash_entry *)h;
+ eh->def_protected = ELF_ST_VISIBILITY (st_other) == STV_PROTECTED;
+ }
+
+ unsigned int isym_sto = st_other & ~ELF_ST_VISIBILITY (-1);
+ unsigned int h_sto = h->other & ~ELF_ST_VISIBILITY (-1);
+
+ if (isym_sto == h_sto)
+ return;
+
+ if (isym_sto & ~STO_AARCH64_VARIANT_PCS)
+ /* Not fatal, this callback cannot fail. */
+ _bfd_error_handler (_("unknown attribute for symbol `%s': 0x%02x"),
+ h->root.root.string, isym_sto);
+
+ /* Note: Ideally we would warn about any attribute mismatch, but
+ this api does not allow that without substantial changes. */
+ if (isym_sto & STO_AARCH64_VARIANT_PCS)
+ h->other |= STO_AARCH64_VARIANT_PCS;
+}
+
+/* Destroy an AArch64 elf linker hash table. */
+
+static void
+elfNN_aarch64_link_hash_table_free (bfd *obfd)
+{
+ struct elf_aarch64_link_hash_table *ret
+ = (struct elf_aarch64_link_hash_table *) obfd->link.hash;
+
+ if (ret->loc_hash_table)
+ htab_delete (ret->loc_hash_table);
+ if (ret->loc_hash_memory)
+ objalloc_free ((struct objalloc *) ret->loc_hash_memory);
+
+ bfd_hash_table_free (&ret->stub_hash_table);
+ _bfd_elf_link_hash_table_free (obfd);
+}
+
+/* Create an AArch64 elf linker hash table. */
+
+static struct bfd_link_hash_table *
+elfNN_aarch64_link_hash_table_create (bfd *abfd)
+{
+ struct elf_aarch64_link_hash_table *ret;
+ size_t amt = sizeof (struct elf_aarch64_link_hash_table);
+
+ ret = bfd_zmalloc (amt);
+ if (ret == NULL)
+ return NULL;
+
+ if (!_bfd_elf_link_hash_table_init
+ (&ret->root, abfd, elfNN_aarch64_link_hash_newfunc,
+ sizeof (struct elf_aarch64_link_hash_entry), AARCH64_ELF_DATA))
+ {
+ free (ret);
+ return NULL;
+ }
+
+ ret->plt_header_size = PLT_ENTRY_SIZE;
+ ret->plt0_entry = elfNN_aarch64_small_plt0_entry;
+ ret->plt_entry_size = PLT_SMALL_ENTRY_SIZE;
+ ret->plt_entry = elfNN_aarch64_small_plt_entry;
+ ret->tlsdesc_plt_entry_size = PLT_TLSDESC_ENTRY_SIZE;
+ ret->obfd = abfd;
+ ret->root.tlsdesc_got = (bfd_vma) - 1;
+
+ if (!bfd_hash_table_init (&ret->stub_hash_table, stub_hash_newfunc,
+ sizeof (struct elf_aarch64_stub_hash_entry)))
+ {
+ _bfd_elf_link_hash_table_free (abfd);
+ return NULL;
+ }
+
+ ret->loc_hash_table = htab_try_create (1024,
+ elfNN_aarch64_local_htab_hash,
+ elfNN_aarch64_local_htab_eq,
+ NULL);
+ ret->loc_hash_memory = objalloc_create ();
+ if (!ret->loc_hash_table || !ret->loc_hash_memory)
+ {
+ elfNN_aarch64_link_hash_table_free (abfd);
+ return NULL;
+ }
+ ret->root.root.hash_table_free = elfNN_aarch64_link_hash_table_free;
+
+ return &ret->root.root;
+}
+
+/* Perform relocation R_TYPE. Returns TRUE upon success, FALSE otherwise. */
+
+static bool
+aarch64_relocate (unsigned int r_type, bfd *input_bfd, asection *input_section,
+ bfd_vma offset, bfd_vma value)
+{
+ reloc_howto_type *howto;
+ bfd_vma place;
+
+ howto = elfNN_aarch64_howto_from_type (input_bfd, r_type);
+ place = (input_section->output_section->vma + input_section->output_offset
+ + offset);
+
+ r_type = elfNN_aarch64_bfd_reloc_from_type (input_bfd, r_type);
+ value = _bfd_aarch64_elf_resolve_relocation (input_bfd, r_type, place,
+ value, 0, false);
+ return _bfd_aarch64_elf_put_addend (input_bfd,
+ input_section->contents + offset, r_type,
+ howto, value) == bfd_reloc_ok;
+}
+
+static enum elf_aarch64_stub_type
+aarch64_select_branch_stub (bfd_vma value, bfd_vma place)
+{
+ if (aarch64_valid_for_adrp_p (value, place))
+ return aarch64_stub_adrp_branch;
+ return aarch64_stub_long_branch;
+}
+
+/* Determine the type of stub needed, if any, for a call. */
+
+static enum elf_aarch64_stub_type
+aarch64_type_of_stub (asection *input_sec,
+ const Elf_Internal_Rela *rel,
+ asection *sym_sec,
+ unsigned char st_type,
+ bfd_vma destination)
+{
+ bfd_vma location;
+ bfd_signed_vma branch_offset;
+ unsigned int r_type;
+ enum elf_aarch64_stub_type stub_type = aarch64_stub_none;
+
+ if (st_type != STT_FUNC
+ && (sym_sec == input_sec))
+ return stub_type;
+
+ /* Determine where the call point is. */
+ location = (input_sec->output_offset
+ + input_sec->output_section->vma + rel->r_offset);
+
+ branch_offset = (bfd_signed_vma) (destination - location);
+
+ r_type = ELFNN_R_TYPE (rel->r_info);
+
+ /* We don't want to redirect any old unconditional jump in this way,
+ only one which is being used for a sibcall, where it is
+ acceptable for the IP0 and IP1 registers to be clobbered. */
+ if ((r_type == AARCH64_R (CALL26) || r_type == AARCH64_R (JUMP26))
+ && (branch_offset > AARCH64_MAX_FWD_BRANCH_OFFSET
+ || branch_offset < AARCH64_MAX_BWD_BRANCH_OFFSET))
+ {
+ stub_type = aarch64_stub_long_branch;
+ }
+
+ return stub_type;
+}
+
+/* Build a name for an entry in the stub hash table. */
+
+static char *
+elfNN_aarch64_stub_name (const asection *input_section,
+ const asection *sym_sec,
+ const struct elf_aarch64_link_hash_entry *hash,
+ const Elf_Internal_Rela *rel)
+{
+ char *stub_name;
+ bfd_size_type len;
+
+ if (hash)
+ {
+ len = 8 + 1 + strlen (hash->root.root.root.string) + 1 + 16 + 1;
+ stub_name = bfd_malloc (len);
+ if (stub_name != NULL)
+ snprintf (stub_name, len, "%08x_%s+%" PRIx64,
+ (unsigned int) input_section->id,
+ hash->root.root.root.string,
+ (uint64_t) rel->r_addend);
+ }
+ else
+ {
+ len = 8 + 1 + 8 + 1 + 8 + 1 + 16 + 1;
+ stub_name = bfd_malloc (len);
+ if (stub_name != NULL)
+ snprintf (stub_name, len, "%08x_%x:%x+%" PRIx64,
+ (unsigned int) input_section->id,
+ (unsigned int) sym_sec->id,
+ (unsigned int) ELFNN_R_SYM (rel->r_info),
+ (uint64_t) rel->r_addend);
+ }
+
+ return stub_name;
+}
+
+/* Return TRUE if symbol H should be hashed in the `.gnu.hash' section. For
+ executable PLT slots where the executable never takes the address of those
+ functions, the function symbols are not added to the hash table. */
+
+static bool
+elf_aarch64_hash_symbol (struct elf_link_hash_entry *h)
+{
+ if (h->plt.offset != (bfd_vma) -1
+ && !h->def_regular
+ && !h->pointer_equality_needed)
+ return false;
+
+ return _bfd_elf_hash_symbol (h);
+}
+
+
+/* Look up an entry in the stub hash. Stub entries are cached because
+ creating the stub name takes a bit of time. */
+
+static struct elf_aarch64_stub_hash_entry *
+elfNN_aarch64_get_stub_entry (const asection *input_section,
+ const asection *sym_sec,
+ struct elf_link_hash_entry *hash,
+ const Elf_Internal_Rela *rel,
+ struct elf_aarch64_link_hash_table *htab)
+{
+ struct elf_aarch64_stub_hash_entry *stub_entry;
+ struct elf_aarch64_link_hash_entry *h =
+ (struct elf_aarch64_link_hash_entry *) hash;
+ const asection *id_sec;
+
+ if ((input_section->flags & SEC_CODE) == 0)
+ return NULL;
+
+ /* If this input section is part of a group of sections sharing one
+ stub section, then use the id of the first section in the group.
+ Stub names need to include a section id, as there may well be
+ more than one stub used to reach say, printf, and we need to
+ distinguish between them. */
+ id_sec = htab->stub_group[input_section->id].link_sec;
+
+ if (h != NULL && h->stub_cache != NULL
+ && h->stub_cache->h == h && h->stub_cache->id_sec == id_sec)
+ {
+ stub_entry = h->stub_cache;
+ }
+ else
+ {
+ char *stub_name;
+
+ stub_name = elfNN_aarch64_stub_name (id_sec, sym_sec, h, rel);
+ if (stub_name == NULL)
+ return NULL;
+
+ stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table,
+ stub_name, false, false);
+ if (h != NULL)
+ h->stub_cache = stub_entry;
+
+ free (stub_name);
+ }
+
+ return stub_entry;
+}
+
+
+/* Create a stub section. */
+
+static asection *
+_bfd_aarch64_create_stub_section (asection *section,
+ struct elf_aarch64_link_hash_table *htab)
+{
+ size_t namelen;
+ bfd_size_type len;
+ char *s_name;
+
+ namelen = strlen (section->name);
+ len = namelen + sizeof (STUB_SUFFIX);
+ s_name = bfd_alloc (htab->stub_bfd, len);
+ if (s_name == NULL)
+ return NULL;
+
+ memcpy (s_name, section->name, namelen);
+ memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
+ return (*htab->add_stub_section) (s_name, section);
+}
+
+
+/* Find or create a stub section for a link section.
+
+ Fix or create the stub section used to collect stubs attached to
+ the specified link section. */
+
+static asection *
+_bfd_aarch64_get_stub_for_link_section (asection *link_section,
+ struct elf_aarch64_link_hash_table *htab)
+{
+ if (htab->stub_group[link_section->id].stub_sec == NULL)
+ htab->stub_group[link_section->id].stub_sec
+ = _bfd_aarch64_create_stub_section (link_section, htab);
+ return htab->stub_group[link_section->id].stub_sec;
+}
+
+
+/* Find or create a stub section in the stub group for an input
+ section. */
+
+static asection *
+_bfd_aarch64_create_or_find_stub_sec (asection *section,
+ struct elf_aarch64_link_hash_table *htab)
+{
+ asection *link_sec = htab->stub_group[section->id].link_sec;
+ return _bfd_aarch64_get_stub_for_link_section (link_sec, htab);
+}
+
+
+/* Add a new stub entry in the stub group associated with an input
+ section to the stub hash. Not all fields of the new stub entry are
+ initialised. */
+
+static struct elf_aarch64_stub_hash_entry *
+_bfd_aarch64_add_stub_entry_in_group (const char *stub_name,
+ asection *section,
+ struct elf_aarch64_link_hash_table *htab)
+{
+ asection *link_sec;
+ asection *stub_sec;
+ struct elf_aarch64_stub_hash_entry *stub_entry;
+
+ link_sec = htab->stub_group[section->id].link_sec;
+ stub_sec = _bfd_aarch64_create_or_find_stub_sec (section, htab);
+
+ /* Enter this entry into the linker stub hash table. */
+ stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table, stub_name,
+ true, false);
+ if (stub_entry == NULL)
+ {
+ /* xgettext:c-format */
+ _bfd_error_handler (_("%pB: cannot create stub entry %s"),
+ section->owner, stub_name);
+ return NULL;
+ }
+
+ stub_entry->stub_sec = stub_sec;
+ stub_entry->stub_offset = 0;
+ stub_entry->id_sec = link_sec;
+
+ return stub_entry;
+}
+
+/* Add a new stub entry in the final stub section to the stub hash.
+ Not all fields of the new stub entry are initialised. */
+
+static struct elf_aarch64_stub_hash_entry *
+_bfd_aarch64_add_stub_entry_after (const char *stub_name,
+ asection *link_section,
+ struct elf_aarch64_link_hash_table *htab)
+{
+ asection *stub_sec;
+ struct elf_aarch64_stub_hash_entry *stub_entry;
+
+ stub_sec = NULL;
+ /* Only create the actual stub if we will end up needing it. */
+ if (htab->fix_erratum_843419 & ERRAT_ADRP)
+ stub_sec = _bfd_aarch64_get_stub_for_link_section (link_section, htab);
+ stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table, stub_name,
+ true, false);
+ if (stub_entry == NULL)
+ {
+ _bfd_error_handler (_("cannot create stub entry %s"), stub_name);
+ return NULL;
+ }
+
+ stub_entry->stub_sec = stub_sec;
+ stub_entry->stub_offset = 0;
+ stub_entry->id_sec = link_section;
+
+ return stub_entry;
+}
+
+
+static bool
+aarch64_build_one_stub (struct bfd_hash_entry *gen_entry,
+ void *in_arg)
+{
+ struct elf_aarch64_stub_hash_entry *stub_entry;
+ asection *stub_sec;
+ bfd *stub_bfd;
+ bfd_byte *loc;
+ bfd_vma sym_value;
+ bfd_vma veneered_insn_loc;
+ bfd_vma veneer_entry_loc;
+ bfd_signed_vma branch_offset = 0;
+ unsigned int template_size;
+ const uint32_t *template;
+ unsigned int i;
+ struct bfd_link_info *info;
+
+ /* Massage our args to the form they really have. */
+ stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry;
+
+ info = (struct bfd_link_info *) in_arg;
+
+ /* Fail if the target section could not be assigned to an output
+ section. The user should fix his linker script. */
+ if (stub_entry->target_section->output_section == NULL
+ && info->non_contiguous_regions)
+ info->callbacks->einfo (_("%F%P: Could not assign `%pA' to an output section. "
+ "Retry without "
+ "--enable-non-contiguous-regions.\n"),
+ stub_entry->target_section);
+
+ stub_sec = stub_entry->stub_sec;
+
+ /* Make a note of the offset within the stubs for this entry. */
+ stub_entry->stub_offset = stub_sec->size;
+ loc = stub_sec->contents + stub_entry->stub_offset;
+
+ stub_bfd = stub_sec->owner;
+
+ /* This is the address of the stub destination. */
+ sym_value = (stub_entry->target_value
+ + stub_entry->target_section->output_offset
+ + stub_entry->target_section->output_section->vma);
+
+ if (stub_entry->stub_type == aarch64_stub_long_branch)
+ {
+ bfd_vma place = (stub_entry->stub_offset + stub_sec->output_section->vma
+ + stub_sec->output_offset);
+
+ /* See if we can relax the stub. */
+ if (aarch64_valid_for_adrp_p (sym_value, place))
+ stub_entry->stub_type = aarch64_select_branch_stub (sym_value, place);
+ }
+
+ switch (stub_entry->stub_type)
+ {
+ case aarch64_stub_adrp_branch:
+ template = aarch64_adrp_branch_stub;
+ template_size = sizeof (aarch64_adrp_branch_stub);
+ break;
+ case aarch64_stub_long_branch:
+ template = aarch64_long_branch_stub;
+ template_size = sizeof (aarch64_long_branch_stub);
+ break;
+ case aarch64_stub_erratum_835769_veneer:
+ template = aarch64_erratum_835769_stub;
+ template_size = sizeof (aarch64_erratum_835769_stub);
+ break;
+ case aarch64_stub_erratum_843419_veneer:
+ template = aarch64_erratum_843419_stub;
+ template_size = sizeof (aarch64_erratum_843419_stub);
+ break;
+ default:
+ abort ();
+ }
+
+ for (i = 0; i < (template_size / sizeof template[0]); i++)
+ {
+ bfd_putl32 (template[i], loc);
+ loc += 4;
+ }
+
+ template_size = (template_size + 7) & ~7;
+ stub_sec->size += template_size;
+
+ switch (stub_entry->stub_type)
+ {
+ case aarch64_stub_adrp_branch:
+ if (!aarch64_relocate (AARCH64_R (ADR_PREL_PG_HI21), stub_bfd, stub_sec,
+ stub_entry->stub_offset, sym_value))
+ /* The stub would not have been relaxed if the offset was out
+ of range. */
+ BFD_FAIL ();
+
+ if (!aarch64_relocate (AARCH64_R (ADD_ABS_LO12_NC), stub_bfd, stub_sec,
+ stub_entry->stub_offset + 4, sym_value))
+ BFD_FAIL ();
+ break;
+
+ case aarch64_stub_long_branch:
+ /* We want the value relative to the address 12 bytes back from the
+ value itself. */
+ if (!aarch64_relocate (AARCH64_R (PRELNN), stub_bfd, stub_sec,
+ stub_entry->stub_offset + 16, sym_value + 12))
+ BFD_FAIL ();
+ break;
+
+ case aarch64_stub_erratum_835769_veneer:
+ veneered_insn_loc = stub_entry->target_section->output_section->vma
+ + stub_entry->target_section->output_offset
+ + stub_entry->target_value;
+ veneer_entry_loc = stub_entry->stub_sec->output_section->vma
+ + stub_entry->stub_sec->output_offset
+ + stub_entry->stub_offset;
+ branch_offset = veneered_insn_loc - veneer_entry_loc;
+ branch_offset >>= 2;
+ branch_offset &= 0x3ffffff;
+ bfd_putl32 (stub_entry->veneered_insn,
+ stub_sec->contents + stub_entry->stub_offset);
+ bfd_putl32 (template[1] | branch_offset,
+ stub_sec->contents + stub_entry->stub_offset + 4);
+ break;
+
+ case aarch64_stub_erratum_843419_veneer:
+ if (!aarch64_relocate (AARCH64_R (JUMP26), stub_bfd, stub_sec,
+ stub_entry->stub_offset + 4, sym_value + 4))
+ BFD_FAIL ();
+ break;
+
+ default:
+ abort ();
+ }
+
+ return true;
+}
+
+/* As above, but don't actually build the stub. Just bump offset so
+ we know stub section sizes. */
+
+static bool
+aarch64_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
+{
+ struct elf_aarch64_stub_hash_entry *stub_entry;
+ struct elf_aarch64_link_hash_table *htab;
+ int size;
+
+ /* Massage our args to the form they really have. */
+ stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry;
+ htab = (struct elf_aarch64_link_hash_table *) in_arg;
+
+ switch (stub_entry->stub_type)
+ {
+ case aarch64_stub_adrp_branch:
+ size = sizeof (aarch64_adrp_branch_stub);
+ break;
+ case aarch64_stub_long_branch:
+ size = sizeof (aarch64_long_branch_stub);
+ break;
+ case aarch64_stub_erratum_835769_veneer:
+ size = sizeof (aarch64_erratum_835769_stub);
+ break;
+ case aarch64_stub_erratum_843419_veneer:
+ {
+ if (htab->fix_erratum_843419 == ERRAT_ADR)
+ return true;
+ size = sizeof (aarch64_erratum_843419_stub);
+ }
+ break;
+ default:
+ abort ();
+ }
+
+ size = (size + 7) & ~7;
+ stub_entry->stub_sec->size += size;
+ return true;
+}
+
+/* External entry points for sizing and building linker stubs. */
+
+/* Set up various things so that we can make a list of input sections
+ for each output section included in the link. Returns -1 on error,
+ 0 when no stubs will be needed, and 1 on success. */
+
+int
+elfNN_aarch64_setup_section_lists (bfd *output_bfd,
+ struct bfd_link_info *info)
+{
+ bfd *input_bfd;
+ unsigned int bfd_count;
+ unsigned int top_id, top_index;
+ asection *section;
+ asection **input_list, **list;
+ size_t amt;
+ struct elf_aarch64_link_hash_table *htab =
+ elf_aarch64_hash_table (info);
+
+ if (!is_elf_hash_table (&htab->root.root))
+ return 0;
+
+ /* Count the number of input BFDs and find the top input section id. */
+ for (input_bfd = info->input_bfds, bfd_count = 0, top_id = 0;
+ input_bfd != NULL; input_bfd = input_bfd->link.next)
+ {
+ bfd_count += 1;
+ for (section = input_bfd->sections;
+ section != NULL; section = section->next)
+ {
+ if (top_id < section->id)
+ top_id = section->id;
+ }
+ }
+ htab->bfd_count = bfd_count;
+
+ amt = sizeof (struct map_stub) * (top_id + 1);
+ htab->stub_group = bfd_zmalloc (amt);
+ if (htab->stub_group == NULL)
+ return -1;
+
+ /* We can't use output_bfd->section_count here to find the top output
+ section index as some sections may have been removed, and
+ _bfd_strip_section_from_output doesn't renumber the indices. */
+ for (section = output_bfd->sections, top_index = 0;
+ section != NULL; section = section->next)
+ {
+ if (top_index < section->index)
+ top_index = section->index;
+ }
+
+ htab->top_index = top_index;
+ amt = sizeof (asection *) * (top_index + 1);
+ input_list = bfd_malloc (amt);
+ htab->input_list = input_list;
+ if (input_list == NULL)
+ return -1;
+
+ /* For sections we aren't interested in, mark their entries with a
+ value we can check later. */
+ list = input_list + top_index;
+ do
+ *list = bfd_abs_section_ptr;
+ while (list-- != input_list);
+
+ for (section = output_bfd->sections;
+ section != NULL; section = section->next)
+ {
+ if ((section->flags & SEC_CODE) != 0)
+ input_list[section->index] = NULL;
+ }
+
+ return 1;
+}
+
+/* Used by elfNN_aarch64_next_input_section and group_sections. */
+#define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
+
+/* The linker repeatedly calls this function for each input section,
+ in the order that input sections are linked into output sections.
+ Build lists of input sections to determine groupings between which
+ we may insert linker stubs. */
+
+void
+elfNN_aarch64_next_input_section (struct bfd_link_info *info, asection *isec)
+{
+ struct elf_aarch64_link_hash_table *htab =
+ elf_aarch64_hash_table (info);
+
+ if (isec->output_section->index <= htab->top_index)
+ {
+ asection **list = htab->input_list + isec->output_section->index;
+
+ if (*list != bfd_abs_section_ptr && (isec->flags & SEC_CODE) != 0)
+ {
+ /* Steal the link_sec pointer for our list. */
+ /* This happens to make the list in reverse order,
+ which is what we want. */
+ PREV_SEC (isec) = *list;
+ *list = isec;
+ }
+ }
+}
+
+/* See whether we can group stub sections together. Grouping stub
+ sections may result in fewer stubs. More importantly, we need to
+ put all .init* and .fini* stubs at the beginning of the .init or
+ .fini output sections respectively, because glibc splits the
+ _init and _fini functions into multiple parts. Putting a stub in
+ the middle of a function is not a good idea. */
+
+static void
+group_sections (struct elf_aarch64_link_hash_table *htab,
+ bfd_size_type stub_group_size,
+ bool stubs_always_after_branch)
+{
+ asection **list = htab->input_list;
+
+ do
+ {
+ asection *tail = *list;
+ asection *head;
+
+ if (tail == bfd_abs_section_ptr)
+ continue;
+
+ /* Reverse the list: we must avoid placing stubs at the
+ beginning of the section because the beginning of the text
+ section may be required for an interrupt vector in bare metal
+ code. */
+#define NEXT_SEC PREV_SEC
+ head = NULL;
+ while (tail != NULL)
+ {
+ /* Pop from tail. */
+ asection *item = tail;
+ tail = PREV_SEC (item);
+
+ /* Push on head. */
+ NEXT_SEC (item) = head;
+ head = item;
+ }
+
+ while (head != NULL)
+ {
+ asection *curr;
+ asection *next;
+ bfd_vma stub_group_start = head->output_offset;
+ bfd_vma end_of_next;
+
+ curr = head;
+ while (NEXT_SEC (curr) != NULL)
+ {
+ next = NEXT_SEC (curr);
+ end_of_next = next->output_offset + next->size;
+ if (end_of_next - stub_group_start >= stub_group_size)
+ /* End of NEXT is too far from start, so stop. */
+ break;
+ /* Add NEXT to the group. */
+ curr = next;
+ }
+
+ /* OK, the size from the start to the start of CURR is less
+ than stub_group_size and thus can be handled by one stub
+ section. (Or the head section is itself larger than
+ stub_group_size, in which case we may be toast.)
+ We should really be keeping track of the total size of
+ stubs added here, as stubs contribute to the final output
+ section size. */
+ do
+ {
+ next = NEXT_SEC (head);
+ /* Set up this stub group. */
+ htab->stub_group[head->id].link_sec = curr;
+ }
+ while (head != curr && (head = next) != NULL);
+
+ /* But wait, there's more! Input sections up to stub_group_size
+ bytes after the stub section can be handled by it too. */
+ if (!stubs_always_after_branch)
+ {
+ stub_group_start = curr->output_offset + curr->size;
+
+ while (next != NULL)
+ {
+ end_of_next = next->output_offset + next->size;
+ if (end_of_next - stub_group_start >= stub_group_size)
+ /* End of NEXT is too far from stubs, so stop. */
+ break;
+ /* Add NEXT to the stub group. */
+ head = next;
+ next = NEXT_SEC (head);
+ htab->stub_group[head->id].link_sec = curr;
+ }
+ }
+ head = next;
+ }
+ }
+ while (list++ != htab->input_list + htab->top_index);
+
+ free (htab->input_list);
+}
+
+#undef PREV_SEC
+#undef PREV_SEC
+
+#define AARCH64_BITS(x, pos, n) (((x) >> (pos)) & ((1 << (n)) - 1))
+
+#define AARCH64_RT(insn) AARCH64_BITS (insn, 0, 5)
+#define AARCH64_RT2(insn) AARCH64_BITS (insn, 10, 5)
+#define AARCH64_RA(insn) AARCH64_BITS (insn, 10, 5)
+#define AARCH64_RD(insn) AARCH64_BITS (insn, 0, 5)
+#define AARCH64_RN(insn) AARCH64_BITS (insn, 5, 5)
+#define AARCH64_RM(insn) AARCH64_BITS (insn, 16, 5)
+
+#define AARCH64_MAC(insn) (((insn) & 0xff000000) == 0x9b000000)
+#define AARCH64_BIT(insn, n) AARCH64_BITS (insn, n, 1)
+#define AARCH64_OP31(insn) AARCH64_BITS (insn, 21, 3)
+#define AARCH64_ZR 0x1f
+
+/* All ld/st ops. See C4-182 of the ARM ARM. The encoding space for
+ LD_PCREL, LDST_RO, LDST_UI and LDST_UIMM cover prefetch ops. */
+
+#define AARCH64_LD(insn) (AARCH64_BIT (insn, 22) == 1)
+#define AARCH64_LDST(insn) (((insn) & 0x0a000000) == 0x08000000)
+#define AARCH64_LDST_EX(insn) (((insn) & 0x3f000000) == 0x08000000)
+#define AARCH64_LDST_PCREL(insn) (((insn) & 0x3b000000) == 0x18000000)
+#define AARCH64_LDST_NAP(insn) (((insn) & 0x3b800000) == 0x28000000)
+#define AARCH64_LDSTP_PI(insn) (((insn) & 0x3b800000) == 0x28800000)
+#define AARCH64_LDSTP_O(insn) (((insn) & 0x3b800000) == 0x29000000)
+#define AARCH64_LDSTP_PRE(insn) (((insn) & 0x3b800000) == 0x29800000)
+#define AARCH64_LDST_UI(insn) (((insn) & 0x3b200c00) == 0x38000000)
+#define AARCH64_LDST_PIIMM(insn) (((insn) & 0x3b200c00) == 0x38000400)
+#define AARCH64_LDST_U(insn) (((insn) & 0x3b200c00) == 0x38000800)
+#define AARCH64_LDST_PREIMM(insn) (((insn) & 0x3b200c00) == 0x38000c00)
+#define AARCH64_LDST_RO(insn) (((insn) & 0x3b200c00) == 0x38200800)
+#define AARCH64_LDST_UIMM(insn) (((insn) & 0x3b000000) == 0x39000000)
+#define AARCH64_LDST_SIMD_M(insn) (((insn) & 0xbfbf0000) == 0x0c000000)
+#define AARCH64_LDST_SIMD_M_PI(insn) (((insn) & 0xbfa00000) == 0x0c800000)
+#define AARCH64_LDST_SIMD_S(insn) (((insn) & 0xbf9f0000) == 0x0d000000)
+#define AARCH64_LDST_SIMD_S_PI(insn) (((insn) & 0xbf800000) == 0x0d800000)
+
+/* Classify an INSN if it is indeed a load/store.
+
+ Return TRUE if INSN is a LD/ST instruction otherwise return FALSE.
+
+ For scalar LD/ST instructions PAIR is FALSE, RT is returned and RT2
+ is set equal to RT.
+
+ For LD/ST pair instructions PAIR is TRUE, RT and RT2 are returned. */
+
+static bool
+aarch64_mem_op_p (uint32_t insn, unsigned int *rt, unsigned int *rt2,
+ bool *pair, bool *load)
+{
+ uint32_t opcode;
+ unsigned int r;
+ uint32_t opc = 0;
+ uint32_t v = 0;
+ uint32_t opc_v = 0;
+
+ /* Bail out quickly if INSN doesn't fall into the load-store
+ encoding space. */
+ if (!AARCH64_LDST (insn))
+ return false;
+
+ *pair = false;
+ *load = false;
+ if (AARCH64_LDST_EX (insn))
+ {
+ *rt = AARCH64_RT (insn);
+ *rt2 = *rt;
+ if (AARCH64_BIT (insn, 21) == 1)
+ {
+ *pair = true;
+ *rt2 = AARCH64_RT2 (insn);
+ }
+ *load = AARCH64_LD (insn);
+ return true;
+ }
+ else if (AARCH64_LDST_NAP (insn)
+ || AARCH64_LDSTP_PI (insn)
+ || AARCH64_LDSTP_O (insn)
+ || AARCH64_LDSTP_PRE (insn))
+ {
+ *pair = true;
+ *rt = AARCH64_RT (insn);
+ *rt2 = AARCH64_RT2 (insn);
+ *load = AARCH64_LD (insn);
+ return true;
+ }
+ else if (AARCH64_LDST_PCREL (insn)
+ || AARCH64_LDST_UI (insn)
+ || AARCH64_LDST_PIIMM (insn)
+ || AARCH64_LDST_U (insn)
+ || AARCH64_LDST_PREIMM (insn)
+ || AARCH64_LDST_RO (insn)
+ || AARCH64_LDST_UIMM (insn))
+ {
+ *rt = AARCH64_RT (insn);
+ *rt2 = *rt;
+ if (AARCH64_LDST_PCREL (insn))
+ *load = true;
+ opc = AARCH64_BITS (insn, 22, 2);
+ v = AARCH64_BIT (insn, 26);
+ opc_v = opc | (v << 2);
+ *load = (opc_v == 1 || opc_v == 2 || opc_v == 3
+ || opc_v == 5 || opc_v == 7);
+ return true;
+ }
+ else if (AARCH64_LDST_SIMD_M (insn)
+ || AARCH64_LDST_SIMD_M_PI (insn))
+ {
+ *rt = AARCH64_RT (insn);
+ *load = AARCH64_BIT (insn, 22);
+ opcode = (insn >> 12) & 0xf;
+ switch (opcode)
+ {
+ case 0:
+ case 2:
+ *rt2 = *rt + 3;
+ break;
+
+ case 4:
+ case 6:
+ *rt2 = *rt + 2;
+ break;
+
+ case 7:
+ *rt2 = *rt;
+ break;
+
+ case 8:
+ case 10:
+ *rt2 = *rt + 1;
+ break;
+
+ default:
+ return false;
+ }
+ return true;
+ }
+ else if (AARCH64_LDST_SIMD_S (insn)
+ || AARCH64_LDST_SIMD_S_PI (insn))
+ {
+ *rt = AARCH64_RT (insn);
+ r = (insn >> 21) & 1;
+ *load = AARCH64_BIT (insn, 22);
+ opcode = (insn >> 13) & 0x7;
+ switch (opcode)
+ {
+ case 0:
+ case 2:
+ case 4:
+ *rt2 = *rt + r;
+ break;
+
+ case 1:
+ case 3:
+ case 5:
+ *rt2 = *rt + (r == 0 ? 2 : 3);
+ break;
+
+ case 6:
+ *rt2 = *rt + r;
+ break;
+
+ case 7:
+ *rt2 = *rt + (r == 0 ? 2 : 3);
+ break;
+
+ default:
+ return false;
+ }
+ return true;
+ }
+
+ return false;
+}
+
+/* Return TRUE if INSN is multiply-accumulate. */
+
+static bool
+aarch64_mlxl_p (uint32_t insn)
+{
+ uint32_t op31 = AARCH64_OP31 (insn);
+
+ if (AARCH64_MAC (insn)
+ && (op31 == 0 || op31 == 1 || op31 == 5)
+ /* Exclude MUL instructions which are encoded as a multiple accumulate
+ with RA = XZR. */
+ && AARCH64_RA (insn) != AARCH64_ZR)
+ return true;
+
+ return false;
+}
+
+/* Some early revisions of the Cortex-A53 have an erratum (835769) whereby
+ it is possible for a 64-bit multiply-accumulate instruction to generate an
+ incorrect result. The details are quite complex and hard to
+ determine statically, since branches in the code may exist in some
+ circumstances, but all cases end with a memory (load, store, or
+ prefetch) instruction followed immediately by the multiply-accumulate
+ operation. We employ a linker patching technique, by moving the potentially
+ affected multiply-accumulate instruction into a patch region and replacing
+ the original instruction with a branch to the patch. This function checks
+ if INSN_1 is the memory operation followed by a multiply-accumulate
+ operation (INSN_2). Return TRUE if an erratum sequence is found, FALSE
+ if INSN_1 and INSN_2 are safe. */
+
+static bool
+aarch64_erratum_sequence (uint32_t insn_1, uint32_t insn_2)
+{
+ uint32_t rt;
+ uint32_t rt2;
+ uint32_t rn;
+ uint32_t rm;
+ uint32_t ra;
+ bool pair;
+ bool load;
+
+ if (aarch64_mlxl_p (insn_2)
+ && aarch64_mem_op_p (insn_1, &rt, &rt2, &pair, &load))
+ {
+ /* Any SIMD memory op is independent of the subsequent MLA
+ by definition of the erratum. */
+ if (AARCH64_BIT (insn_1, 26))
+ return true;
+
+ /* If not SIMD, check for integer memory ops and MLA relationship. */
+ rn = AARCH64_RN (insn_2);
+ ra = AARCH64_RA (insn_2);
+ rm = AARCH64_RM (insn_2);
+
+ /* If this is a load and there's a true(RAW) dependency, we are safe
+ and this is not an erratum sequence. */
+ if (load &&
+ (rt == rn || rt == rm || rt == ra
+ || (pair && (rt2 == rn || rt2 == rm || rt2 == ra))))
+ return false;
+
+ /* We conservatively put out stubs for all other cases (including
+ writebacks). */
+ return true;
+ }
+
+ return false;
+}
+
+/* Used to order a list of mapping symbols by address. */
+
+static int
+elf_aarch64_compare_mapping (const void *a, const void *b)
+{
+ const elf_aarch64_section_map *amap = (const elf_aarch64_section_map *) a;
+ const elf_aarch64_section_map *bmap = (const elf_aarch64_section_map *) b;
+
+ if (amap->vma > bmap->vma)
+ return 1;
+ else if (amap->vma < bmap->vma)
+ return -1;
+ else if (amap->type > bmap->type)
+ /* Ensure results do not depend on the host qsort for objects with
+ multiple mapping symbols at the same address by sorting on type
+ after vma. */
+ return 1;
+ else if (amap->type < bmap->type)
+ return -1;
+ else
+ return 0;
+}
+
+
+static char *
+_bfd_aarch64_erratum_835769_stub_name (unsigned num_fixes)
+{
+ char *stub_name = (char *) bfd_malloc
+ (strlen ("__erratum_835769_veneer_") + 16);
+ if (stub_name != NULL)
+ sprintf (stub_name,"__erratum_835769_veneer_%d", num_fixes);
+ return stub_name;
+}
+
+/* Scan for Cortex-A53 erratum 835769 sequence.
+
+ Return TRUE else FALSE on abnormal termination. */
+
+static bool
+_bfd_aarch64_erratum_835769_scan (bfd *input_bfd,
+ struct bfd_link_info *info,
+ unsigned int *num_fixes_p)
+{
+ asection *section;
+ struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info);
+ unsigned int num_fixes = *num_fixes_p;
+
+ if (htab == NULL)
+ return true;
+
+ for (section = input_bfd->sections;
+ section != NULL;
+ section = section->next)
+ {
+ bfd_byte *contents = NULL;
+ struct _aarch64_elf_section_data *sec_data;
+ unsigned int span;
+
+ if (elf_section_type (section) != SHT_PROGBITS
+ || (elf_section_flags (section) & SHF_EXECINSTR) == 0
+ || (section->flags & SEC_EXCLUDE) != 0
+ || (section->sec_info_type == SEC_INFO_TYPE_JUST_SYMS)
+ || (section->output_section == bfd_abs_section_ptr))
+ continue;
+
+ if (elf_section_data (section)->this_hdr.contents != NULL)
+ contents = elf_section_data (section)->this_hdr.contents;
+ else if (! bfd_malloc_and_get_section (input_bfd, section, &contents))
+ return false;
+
+ sec_data = elf_aarch64_section_data (section);
+
+ if (sec_data->mapcount)
+ qsort (sec_data->map, sec_data->mapcount,
+ sizeof (elf_aarch64_section_map), elf_aarch64_compare_mapping);
+
+ for (span = 0; span < sec_data->mapcount; span++)
+ {
+ unsigned int span_start = sec_data->map[span].vma;
+ unsigned int span_end = ((span == sec_data->mapcount - 1)
+ ? sec_data->map[0].vma + section->size
+ : sec_data->map[span + 1].vma);
+ unsigned int i;
+ char span_type = sec_data->map[span].type;
+
+ if (span_type == 'd')
+ continue;
+
+ for (i = span_start; i + 4 < span_end; i += 4)
+ {
+ uint32_t insn_1 = bfd_getl32 (contents + i);
+ uint32_t insn_2 = bfd_getl32 (contents + i + 4);
+
+ if (aarch64_erratum_sequence (insn_1, insn_2))
+ {
+ struct elf_aarch64_stub_hash_entry *stub_entry;
+ char *stub_name = _bfd_aarch64_erratum_835769_stub_name (num_fixes);
+ if (! stub_name)
+ return false;
+
+ stub_entry = _bfd_aarch64_add_stub_entry_in_group (stub_name,
+ section,
+ htab);
+ if (! stub_entry)
+ return false;
+
+ stub_entry->stub_type = aarch64_stub_erratum_835769_veneer;
+ stub_entry->target_section = section;
+ stub_entry->target_value = i + 4;
+ stub_entry->veneered_insn = insn_2;
+ stub_entry->output_name = stub_name;
+ num_fixes++;
+ }
+ }
+ }
+ if (elf_section_data (section)->this_hdr.contents == NULL)
+ free (contents);
+ }
+
+ *num_fixes_p = num_fixes;
+
+ return true;
+}
+
+
+/* Test if instruction INSN is ADRP. */
+
+static bool
+_bfd_aarch64_adrp_p (uint32_t insn)
+{
+ return ((insn & AARCH64_ADRP_OP_MASK) == AARCH64_ADRP_OP);
+}
+
+
+/* Helper predicate to look for cortex-a53 erratum 843419 sequence 1. */
+
+static bool
+_bfd_aarch64_erratum_843419_sequence_p (uint32_t insn_1, uint32_t insn_2,
+ uint32_t insn_3)
+{
+ uint32_t rt;
+ uint32_t rt2;
+ bool pair;
+ bool load;
+
+ return (aarch64_mem_op_p (insn_2, &rt, &rt2, &pair, &load)
+ && (!pair
+ || (pair && !load))
+ && AARCH64_LDST_UIMM (insn_3)
+ && AARCH64_RN (insn_3) == AARCH64_RD (insn_1));
+}
+
+
+/* Test for the presence of Cortex-A53 erratum 843419 instruction sequence.
+
+ Return TRUE if section CONTENTS at offset I contains one of the
+ erratum 843419 sequences, otherwise return FALSE. If a sequence is
+ seen set P_VENEER_I to the offset of the final LOAD/STORE
+ instruction in the sequence.
+ */
+
+static bool
+_bfd_aarch64_erratum_843419_p (bfd_byte *contents, bfd_vma vma,
+ bfd_vma i, bfd_vma span_end,
+ bfd_vma *p_veneer_i)
+{
+ uint32_t insn_1 = bfd_getl32 (contents + i);
+
+ if (!_bfd_aarch64_adrp_p (insn_1))
+ return false;
+
+ if (span_end < i + 12)
+ return false;
+
+ uint32_t insn_2 = bfd_getl32 (contents + i + 4);
+ uint32_t insn_3 = bfd_getl32 (contents + i + 8);
+
+ if ((vma & 0xfff) != 0xff8 && (vma & 0xfff) != 0xffc)
+ return false;
+
+ if (_bfd_aarch64_erratum_843419_sequence_p (insn_1, insn_2, insn_3))
+ {
+ *p_veneer_i = i + 8;
+ return true;
+ }
+
+ if (span_end < i + 16)
+ return false;
+
+ uint32_t insn_4 = bfd_getl32 (contents + i + 12);
+
+ if (_bfd_aarch64_erratum_843419_sequence_p (insn_1, insn_2, insn_4))
+ {
+ *p_veneer_i = i + 12;
+ return true;
+ }
+
+ return false;
+}
+
+
+/* Resize all stub sections. */
+
+static void
+_bfd_aarch64_resize_stubs (struct elf_aarch64_link_hash_table *htab)
+{
+ asection *section;
+
+ /* OK, we've added some stubs. Find out the new size of the
+ stub sections. */
+ for (section = htab->stub_bfd->sections;
+ section != NULL; section = section->next)
+ {
+ /* Ignore non-stub sections. */
+ if (!strstr (section->name, STUB_SUFFIX))
+ continue;
+ section->size = 0;
+ }
+
+ bfd_hash_traverse (&htab->stub_hash_table, aarch64_size_one_stub, htab);
+
+ for (section = htab->stub_bfd->sections;
+ section != NULL; section = section->next)
+ {
+ if (!strstr (section->name, STUB_SUFFIX))
+ continue;
+
+ /* Add space for a branch. Add 8 bytes to keep section 8 byte aligned,
+ as long branch stubs contain a 64-bit address. */
+ if (section->size)
+ section->size += 8;
+
+ /* Ensure all stub sections have a size which is a multiple of
+ 4096. This is important in order to ensure that the insertion
+ of stub sections does not in itself move existing code around
+ in such a way that new errata sequences are created. We only do this
+ when the ADRP workaround is enabled. If only the ADR workaround is
+ enabled then the stubs workaround won't ever be used. */
+ if (htab->fix_erratum_843419 & ERRAT_ADRP)
+ if (section->size)
+ section->size = BFD_ALIGN (section->size, 0x1000);
+ }
+}
+
+/* Construct an erratum 843419 workaround stub name. */
+
+static char *
+_bfd_aarch64_erratum_843419_stub_name (asection *input_section,
+ bfd_vma offset)
+{
+ const bfd_size_type len = 8 + 4 + 1 + 8 + 1 + 16 + 1;
+ char *stub_name = bfd_malloc (len);
+
+ if (stub_name != NULL)
+ snprintf (stub_name, len, "e843419@%04x_%08x_%" PRIx64,
+ input_section->owner->id,
+ input_section->id,
+ (uint64_t) offset);
+ return stub_name;
+}
+
+/* Build a stub_entry structure describing an 843419 fixup.
+
+ The stub_entry constructed is populated with the bit pattern INSN
+ of the instruction located at OFFSET within input SECTION.
+
+ Returns TRUE on success. */
+
+static bool
+_bfd_aarch64_erratum_843419_fixup (uint32_t insn,
+ bfd_vma adrp_offset,
+ bfd_vma ldst_offset,
+ asection *section,
+ struct bfd_link_info *info)
+{
+ struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info);
+ char *stub_name;
+ struct elf_aarch64_stub_hash_entry *stub_entry;
+
+ stub_name = _bfd_aarch64_erratum_843419_stub_name (section, ldst_offset);
+ if (stub_name == NULL)
+ return false;
+ stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table, stub_name,
+ false, false);
+ if (stub_entry)
+ {
+ free (stub_name);
+ return true;
+ }
+
+ /* We always place an 843419 workaround veneer in the stub section
+ attached to the input section in which an erratum sequence has
+ been found. This ensures that later in the link process (in
+ elfNN_aarch64_write_section) when we copy the veneered
+ instruction from the input section into the stub section the
+ copied instruction will have had any relocations applied to it.
+ If we placed workaround veneers in any other stub section then we
+ could not assume that all relocations have been processed on the
+ corresponding input section at the point we output the stub
+ section. */
+
+ stub_entry = _bfd_aarch64_add_stub_entry_after (stub_name, section, htab);
+ if (stub_entry == NULL)
+ {
+ free (stub_name);
+ return false;
+ }
+
+ stub_entry->adrp_offset = adrp_offset;
+ stub_entry->target_value = ldst_offset;
+ stub_entry->target_section = section;
+ stub_entry->stub_type = aarch64_stub_erratum_843419_veneer;
+ stub_entry->veneered_insn = insn;
+ stub_entry->output_name = stub_name;
+
+ return true;
+}
+
+
+/* Scan an input section looking for the signature of erratum 843419.
+
+ Scans input SECTION in INPUT_BFD looking for erratum 843419
+ signatures, for each signature found a stub_entry is created
+ describing the location of the erratum for subsequent fixup.
+
+ Return TRUE on successful scan, FALSE on failure to scan.
+ */
+
+static bool
+_bfd_aarch64_erratum_843419_scan (bfd *input_bfd, asection *section,
+ struct bfd_link_info *info)
+{
+ struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info);
+
+ if (htab == NULL)
+ return true;
+
+ if (elf_section_type (section) != SHT_PROGBITS
+ || (elf_section_flags (section) & SHF_EXECINSTR) == 0
+ || (section->flags & SEC_EXCLUDE) != 0
+ || (section->sec_info_type == SEC_INFO_TYPE_JUST_SYMS)
+ || (section->output_section == bfd_abs_section_ptr))
+ return true;
+
+ do
+ {
+ bfd_byte *contents = NULL;
+ struct _aarch64_elf_section_data *sec_data;
+ unsigned int span;
+
+ if (elf_section_data (section)->this_hdr.contents != NULL)
+ contents = elf_section_data (section)->this_hdr.contents;
+ else if (! bfd_malloc_and_get_section (input_bfd, section, &contents))
+ return false;
+
+ sec_data = elf_aarch64_section_data (section);
+
+ if (sec_data->mapcount)
+ qsort (sec_data->map, sec_data->mapcount,
+ sizeof (elf_aarch64_section_map), elf_aarch64_compare_mapping);
+
+ for (span = 0; span < sec_data->mapcount; span++)
+ {
+ unsigned int span_start = sec_data->map[span].vma;
+ unsigned int span_end = ((span == sec_data->mapcount - 1)
+ ? sec_data->map[0].vma + section->size
+ : sec_data->map[span + 1].vma);
+ unsigned int i;
+ char span_type = sec_data->map[span].type;
+
+ if (span_type == 'd')
+ continue;
+
+ for (i = span_start; i + 8 < span_end; i += 4)
+ {
+ bfd_vma vma = (section->output_section->vma
+ + section->output_offset
+ + i);
+ bfd_vma veneer_i;
+
+ if (_bfd_aarch64_erratum_843419_p
+ (contents, vma, i, span_end, &veneer_i))
+ {
+ uint32_t insn = bfd_getl32 (contents + veneer_i);
+
+ if (!_bfd_aarch64_erratum_843419_fixup (insn, i, veneer_i,
+ section, info))
+ return false;
+ }
+ }
+ }
+
+ if (elf_section_data (section)->this_hdr.contents == NULL)
+ free (contents);
+ }
+ while (0);
+
+ return true;
+}
+
+
+/* Determine and set the size of the stub section for a final link.
+
+ The basic idea here is to examine all the relocations looking for
+ PC-relative calls to a target that is unreachable with a "bl"
+ instruction. */
+
+bool
+elfNN_aarch64_size_stubs (bfd *output_bfd,
+ bfd *stub_bfd,
+ struct bfd_link_info *info,
+ bfd_signed_vma group_size,
+ asection * (*add_stub_section) (const char *,
+ asection *),
+ void (*layout_sections_again) (void))
+{
+ bfd_size_type stub_group_size;
+ bool stubs_always_before_branch;
+ bool stub_changed = false;
+ struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info);
+ unsigned int num_erratum_835769_fixes = 0;
+
+ /* Propagate mach to stub bfd, because it may not have been
+ finalized when we created stub_bfd. */
+ bfd_set_arch_mach (stub_bfd, bfd_get_arch (output_bfd),
+ bfd_get_mach (output_bfd));
+
+ /* Stash our params away. */
+ htab->stub_bfd = stub_bfd;
+ htab->add_stub_section = add_stub_section;
+ htab->layout_sections_again = layout_sections_again;
+ stubs_always_before_branch = group_size < 0;
+ if (group_size < 0)
+ stub_group_size = -group_size;
+ else
+ stub_group_size = group_size;
+
+ if (stub_group_size == 1)
+ {
+ /* Default values. */
+ /* AArch64 branch range is +-128MB. The value used is 1MB less. */
+ stub_group_size = 127 * 1024 * 1024;
+ }
+
+ group_sections (htab, stub_group_size, stubs_always_before_branch);
+
+ (*htab->layout_sections_again) ();
+
+ if (htab->fix_erratum_835769)
+ {
+ bfd *input_bfd;
+
+ for (input_bfd = info->input_bfds;
+ input_bfd != NULL; input_bfd = input_bfd->link.next)
+ {
+ if (!is_aarch64_elf (input_bfd)
+ || (input_bfd->flags & BFD_LINKER_CREATED) != 0)
+ continue;
+
+ if (!_bfd_aarch64_erratum_835769_scan (input_bfd, info,
+ &num_erratum_835769_fixes))
+ return false;
+ }
+
+ _bfd_aarch64_resize_stubs (htab);
+ (*htab->layout_sections_again) ();
+ }
+
+ if (htab->fix_erratum_843419 != ERRAT_NONE)
+ {
+ bfd *input_bfd;
+
+ for (input_bfd = info->input_bfds;
+ input_bfd != NULL;
+ input_bfd = input_bfd->link.next)
+ {
+ asection *section;
+
+ if (!is_aarch64_elf (input_bfd)
+ || (input_bfd->flags & BFD_LINKER_CREATED) != 0)
+ continue;
+
+ for (section = input_bfd->sections;
+ section != NULL;
+ section = section->next)
+ if (!_bfd_aarch64_erratum_843419_scan (input_bfd, section, info))
+ return false;
+ }
+
+ _bfd_aarch64_resize_stubs (htab);
+ (*htab->layout_sections_again) ();
+ }
+
+ while (1)
+ {
+ bfd *input_bfd;
+
+ for (input_bfd = info->input_bfds;
+ input_bfd != NULL; input_bfd = input_bfd->link.next)
+ {
+ Elf_Internal_Shdr *symtab_hdr;
+ asection *section;
+ Elf_Internal_Sym *local_syms = NULL;
+
+ if (!is_aarch64_elf (input_bfd)
+ || (input_bfd->flags & BFD_LINKER_CREATED) != 0)
+ continue;
+
+ /* We'll need the symbol table in a second. */
+ symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
+ if (symtab_hdr->sh_info == 0)
+ continue;
+
+ /* Walk over each section attached to the input bfd. */
+ for (section = input_bfd->sections;
+ section != NULL; section = section->next)
+ {
+ Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
+
+ /* If there aren't any relocs, then there's nothing more
+ to do. */
+ if ((section->flags & SEC_RELOC) == 0
+ || section->reloc_count == 0
+ || (section->flags & SEC_CODE) == 0)
+ continue;
+
+ /* If this section is a link-once section that will be
+ discarded, then don't create any stubs. */
+ if (section->output_section == NULL
+ || section->output_section->owner != output_bfd)
+ continue;
+
+ /* Get the relocs. */
+ internal_relocs
+ = _bfd_elf_link_read_relocs (input_bfd, section, NULL,
+ NULL, info->keep_memory);
+ if (internal_relocs == NULL)
+ goto error_ret_free_local;
+
+ /* Now examine each relocation. */
+ irela = internal_relocs;
+ irelaend = irela + section->reloc_count;
+ for (; irela < irelaend; irela++)
+ {
+ unsigned int r_type, r_indx;
+ enum elf_aarch64_stub_type stub_type;
+ struct elf_aarch64_stub_hash_entry *stub_entry;
+ asection *sym_sec;
+ bfd_vma sym_value;
+ bfd_vma destination;
+ struct elf_aarch64_link_hash_entry *hash;
+ const char *sym_name;
+ char *stub_name;
+ const asection *id_sec;
+ unsigned char st_type;
+ bfd_size_type len;
+
+ r_type = ELFNN_R_TYPE (irela->r_info);
+ r_indx = ELFNN_R_SYM (irela->r_info);
+
+ if (r_type >= (unsigned int) R_AARCH64_end)
+ {
+ bfd_set_error (bfd_error_bad_value);
+ error_ret_free_internal:
+ if (elf_section_data (section)->relocs == NULL)
+ free (internal_relocs);
+ goto error_ret_free_local;
+ }
+
+ /* Only look for stubs on unconditional branch and
+ branch and link instructions. */
+ if (r_type != (unsigned int) AARCH64_R (CALL26)
+ && r_type != (unsigned int) AARCH64_R (JUMP26))
+ continue;
+
+ /* Now determine the call target, its name, value,
+ section. */
+ sym_sec = NULL;
+ sym_value = 0;
+ destination = 0;
+ hash = NULL;
+ sym_name = NULL;
+ if (r_indx < symtab_hdr->sh_info)
+ {
+ /* It's a local symbol. */
+ Elf_Internal_Sym *sym;
+ Elf_Internal_Shdr *hdr;
+
+ if (local_syms == NULL)
+ {
+ local_syms
+ = (Elf_Internal_Sym *) symtab_hdr->contents;
+ if (local_syms == NULL)
+ local_syms
+ = bfd_elf_get_elf_syms (input_bfd, symtab_hdr,
+ symtab_hdr->sh_info, 0,
+ NULL, NULL, NULL);
+ if (local_syms == NULL)
+ goto error_ret_free_internal;
+ }
+
+ sym = local_syms + r_indx;
+ hdr = elf_elfsections (input_bfd)[sym->st_shndx];
+ sym_sec = hdr->bfd_section;
+ if (!sym_sec)
+ /* This is an undefined symbol. It can never
+ be resolved. */
+ continue;
+
+ if (ELF_ST_TYPE (sym->st_info) != STT_SECTION)
+ sym_value = sym->st_value;
+ destination = (sym_value + irela->r_addend
+ + sym_sec->output_offset
+ + sym_sec->output_section->vma);
+ st_type = ELF_ST_TYPE (sym->st_info);
+ sym_name
+ = bfd_elf_string_from_elf_section (input_bfd,
+ symtab_hdr->sh_link,
+ sym->st_name);
+ }
+ else
+ {
+ int e_indx;
+
+ e_indx = r_indx - symtab_hdr->sh_info;
+ hash = ((struct elf_aarch64_link_hash_entry *)
+ elf_sym_hashes (input_bfd)[e_indx]);
+
+ while (hash->root.root.type == bfd_link_hash_indirect
+ || hash->root.root.type == bfd_link_hash_warning)
+ hash = ((struct elf_aarch64_link_hash_entry *)
+ hash->root.root.u.i.link);
+
+ if (hash->root.root.type == bfd_link_hash_defined
+ || hash->root.root.type == bfd_link_hash_defweak)
+ {
+ struct elf_aarch64_link_hash_table *globals =
+ elf_aarch64_hash_table (info);
+ sym_sec = hash->root.root.u.def.section;
+ sym_value = hash->root.root.u.def.value;
+ /* For a destination in a shared library,
+ use the PLT stub as target address to
+ decide whether a branch stub is
+ needed. */
+ if (globals->root.splt != NULL && hash != NULL
+ && hash->root.plt.offset != (bfd_vma) - 1)
+ {
+ sym_sec = globals->root.splt;
+ sym_value = hash->root.plt.offset;
+ if (sym_sec->output_section != NULL)
+ destination = (sym_value
+ + sym_sec->output_offset
+ +
+ sym_sec->output_section->vma);
+ }
+ else if (sym_sec->output_section != NULL)
+ destination = (sym_value + irela->r_addend
+ + sym_sec->output_offset
+ + sym_sec->output_section->vma);
+ }
+ else if (hash->root.root.type == bfd_link_hash_undefined
+ || (hash->root.root.type
+ == bfd_link_hash_undefweak))
+ {
+ /* For a shared library, use the PLT stub as
+ target address to decide whether a long
+ branch stub is needed.
+ For absolute code, they cannot be handled. */
+ struct elf_aarch64_link_hash_table *globals =
+ elf_aarch64_hash_table (info);
+
+ if (globals->root.splt != NULL && hash != NULL
+ && hash->root.plt.offset != (bfd_vma) - 1)
+ {
+ sym_sec = globals->root.splt;
+ sym_value = hash->root.plt.offset;
+ if (sym_sec->output_section != NULL)
+ destination = (sym_value
+ + sym_sec->output_offset
+ +
+ sym_sec->output_section->vma);
+ }
+ else
+ continue;
+ }
+ else
+ {
+ bfd_set_error (bfd_error_bad_value);
+ goto error_ret_free_internal;
+ }
+ st_type = ELF_ST_TYPE (hash->root.type);
+ sym_name = hash->root.root.root.string;
+ }
+
+ /* Determine what (if any) linker stub is needed. */
+ stub_type = aarch64_type_of_stub (section, irela, sym_sec,
+ st_type, destination);
+ if (stub_type == aarch64_stub_none)
+ continue;
+
+ /* Support for grouping stub sections. */
+ id_sec = htab->stub_group[section->id].link_sec;
+
+ /* Get the name of this stub. */
+ stub_name = elfNN_aarch64_stub_name (id_sec, sym_sec, hash,
+ irela);
+ if (!stub_name)
+ goto error_ret_free_internal;
+
+ stub_entry =
+ aarch64_stub_hash_lookup (&htab->stub_hash_table,
+ stub_name, false, false);
+ if (stub_entry != NULL)
+ {
+ /* The proper stub has already been created. */
+ free (stub_name);
+ /* Always update this stub's target since it may have
+ changed after layout. */
+ stub_entry->target_value = sym_value + irela->r_addend;
+ continue;
+ }
+
+ stub_entry = _bfd_aarch64_add_stub_entry_in_group
+ (stub_name, section, htab);
+ if (stub_entry == NULL)
+ {
+ free (stub_name);
+ goto error_ret_free_internal;
+ }
+
+ stub_entry->target_value = sym_value + irela->r_addend;
+ stub_entry->target_section = sym_sec;
+ stub_entry->stub_type = stub_type;
+ stub_entry->h = hash;
+ stub_entry->st_type = st_type;
+
+ if (sym_name == NULL)
+ sym_name = "unnamed";
+ len = sizeof (STUB_ENTRY_NAME) + strlen (sym_name);
+ stub_entry->output_name = bfd_alloc (htab->stub_bfd, len);
+ if (stub_entry->output_name == NULL)
+ {
+ free (stub_name);
+ goto error_ret_free_internal;
+ }
+
+ snprintf (stub_entry->output_name, len, STUB_ENTRY_NAME,
+ sym_name);
+
+ stub_changed = true;
+ }
+
+ /* We're done with the internal relocs, free them. */
+ if (elf_section_data (section)->relocs == NULL)
+ free (internal_relocs);
+ }
+ }
+
+ if (!stub_changed)
+ break;
+
+ _bfd_aarch64_resize_stubs (htab);
+
+ /* Ask the linker to do its stuff. */
+ (*htab->layout_sections_again) ();
+ stub_changed = false;
+ }
+
+ return true;
+
+ error_ret_free_local:
+ return false;
+}
+
+/* Build all the stubs associated with the current output file. The
+ stubs are kept in a hash table attached to the main linker hash
+ table. We also set up the .plt entries for statically linked PIC
+ functions here. This function is called via aarch64_elf_finish in the
+ linker. */
+
+bool
+elfNN_aarch64_build_stubs (struct bfd_link_info *info)
+{
+ asection *stub_sec;
+ struct bfd_hash_table *table;
+ struct elf_aarch64_link_hash_table *htab;
+
+ htab = elf_aarch64_hash_table (info);
+
+ for (stub_sec = htab->stub_bfd->sections;
+ stub_sec != NULL; stub_sec = stub_sec->next)
+ {
+ bfd_size_type size;
+
+ /* Ignore non-stub sections. */
+ if (!strstr (stub_sec->name, STUB_SUFFIX))
+ continue;
+
+ /* Allocate memory to hold the linker stubs. */
+ size = stub_sec->size;
+ stub_sec->contents = bfd_zalloc (htab->stub_bfd, size);
+ if (stub_sec->contents == NULL && size != 0)
+ return false;
+ stub_sec->size = 0;
+
+ /* Add a branch around the stub section, and a nop, to keep it 8 byte
+ aligned, as long branch stubs contain a 64-bit address. */
+ bfd_putl32 (0x14000000 | (size >> 2), stub_sec->contents);
+ bfd_putl32 (INSN_NOP, stub_sec->contents + 4);
+ stub_sec->size += 8;
+ }
+
+ /* Build the stubs as directed by the stub hash table. */
+ table = &htab->stub_hash_table;
+ bfd_hash_traverse (table, aarch64_build_one_stub, info);
+
+ return true;
+}
+
+
+/* Add an entry to the code/data map for section SEC. */
+
+static void
+elfNN_aarch64_section_map_add (asection *sec, char type, bfd_vma vma)
+{
+ struct _aarch64_elf_section_data *sec_data =
+ elf_aarch64_section_data (sec);
+ unsigned int newidx;
+
+ if (sec_data->map == NULL)
+ {
+ sec_data->map = bfd_malloc (sizeof (elf_aarch64_section_map));
+ sec_data->mapcount = 0;
+ sec_data->mapsize = 1;
+ }
+
+ newidx = sec_data->mapcount++;
+
+ if (sec_data->mapcount > sec_data->mapsize)
+ {
+ sec_data->mapsize *= 2;
+ sec_data->map = bfd_realloc_or_free
+ (sec_data->map, sec_data->mapsize * sizeof (elf_aarch64_section_map));
+ }
+
+ if (sec_data->map)
+ {
+ sec_data->map[newidx].vma = vma;
+ sec_data->map[newidx].type = type;
+ }
+}
+
+
+/* Initialise maps of insn/data for input BFDs. */
+void
+bfd_elfNN_aarch64_init_maps (bfd *abfd)
+{
+ Elf_Internal_Sym *isymbuf;
+ Elf_Internal_Shdr *hdr;
+ unsigned int i, localsyms;
+
+ /* Make sure that we are dealing with an AArch64 elf binary. */
+ if (!is_aarch64_elf (abfd))
+ return;
+
+ if ((abfd->flags & DYNAMIC) != 0)
+ return;
+
+ hdr = &elf_symtab_hdr (abfd);
+ localsyms = hdr->sh_info;
+
+ /* Obtain a buffer full of symbols for this BFD. The hdr->sh_info field
+ should contain the number of local symbols, which should come before any
+ global symbols. Mapping symbols are always local. */
+ isymbuf = bfd_elf_get_elf_syms (abfd, hdr, localsyms, 0, NULL, NULL, NULL);
+
+ /* No internal symbols read? Skip this BFD. */
+ if (isymbuf == NULL)
+ return;
+
+ for (i = 0; i < localsyms; i++)
+ {
+ Elf_Internal_Sym *isym = &isymbuf[i];
+ asection *sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
+ const char *name;
+
+ if (sec != NULL && ELF_ST_BIND (isym->st_info) == STB_LOCAL)
+ {
+ name = bfd_elf_string_from_elf_section (abfd,
+ hdr->sh_link,
+ isym->st_name);
+
+ if (bfd_is_aarch64_special_symbol_name
+ (name, BFD_AARCH64_SPECIAL_SYM_TYPE_MAP))
+ elfNN_aarch64_section_map_add (sec, name[1], isym->st_value);
+ }
+ }
+}
+
+static void
+setup_plt_values (struct bfd_link_info *link_info,
+ aarch64_plt_type plt_type)
+{
+ struct elf_aarch64_link_hash_table *globals;
+ globals = elf_aarch64_hash_table (link_info);
+
+ if (plt_type == PLT_BTI_PAC)
+ {
+ globals->plt0_entry = elfNN_aarch64_small_plt0_bti_entry;
+
+ /* Only in ET_EXEC we need PLTn with BTI. */
+ if (bfd_link_pde (link_info))
+ {
+ globals->plt_entry_size = PLT_BTI_PAC_SMALL_ENTRY_SIZE;
+ globals->plt_entry = elfNN_aarch64_small_plt_bti_pac_entry;
+ }
+ else
+ {
+ globals->plt_entry_size = PLT_PAC_SMALL_ENTRY_SIZE;
+ globals->plt_entry = elfNN_aarch64_small_plt_pac_entry;
+ }
+ }
+ else if (plt_type == PLT_BTI)
+ {
+ globals->plt0_entry = elfNN_aarch64_small_plt0_bti_entry;
+
+ /* Only in ET_EXEC we need PLTn with BTI. */
+ if (bfd_link_pde (link_info))
+ {
+ globals->plt_entry_size = PLT_BTI_SMALL_ENTRY_SIZE;
+ globals->plt_entry = elfNN_aarch64_small_plt_bti_entry;
+ }
+ }
+ else if (plt_type == PLT_PAC)
+ {
+ globals->plt_entry_size = PLT_PAC_SMALL_ENTRY_SIZE;
+ globals->plt_entry = elfNN_aarch64_small_plt_pac_entry;
+ }
+}
+
+/* Set option values needed during linking. */
+void
+bfd_elfNN_aarch64_set_options (struct bfd *output_bfd,
+ struct bfd_link_info *link_info,
+ int no_enum_warn,
+ int no_wchar_warn, int pic_veneer,
+ int fix_erratum_835769,
+ erratum_84319_opts fix_erratum_843419,
+ int no_apply_dynamic_relocs,
+ aarch64_bti_pac_info bp_info)
+{
+ struct elf_aarch64_link_hash_table *globals;
+
+ globals = elf_aarch64_hash_table (link_info);
+ globals->pic_veneer = pic_veneer;
+ globals->fix_erratum_835769 = fix_erratum_835769;
+ /* If the default options are used, then ERRAT_ADR will be set by default
+ which will enable the ADRP->ADR workaround for the erratum 843419
+ workaround. */
+ globals->fix_erratum_843419 = fix_erratum_843419;
+ globals->no_apply_dynamic_relocs = no_apply_dynamic_relocs;
+
+ BFD_ASSERT (is_aarch64_elf (output_bfd));
+ elf_aarch64_tdata (output_bfd)->no_enum_size_warning = no_enum_warn;
+ elf_aarch64_tdata (output_bfd)->no_wchar_size_warning = no_wchar_warn;
+
+ switch (bp_info.bti_type)
+ {
+ case BTI_WARN:
+ elf_aarch64_tdata (output_bfd)->no_bti_warn = 0;
+ elf_aarch64_tdata (output_bfd)->gnu_and_prop
+ |= GNU_PROPERTY_AARCH64_FEATURE_1_BTI;
+ break;
+
+ default:
+ break;
+ }
+ elf_aarch64_tdata (output_bfd)->plt_type = bp_info.plt_type;
+ setup_plt_values (link_info, bp_info.plt_type);
+}
+
+static bfd_vma
+aarch64_calculate_got_entry_vma (struct elf_link_hash_entry *h,
+ struct elf_aarch64_link_hash_table
+ *globals, struct bfd_link_info *info,
+ bfd_vma value, bfd *output_bfd,
+ bool *unresolved_reloc_p)
+{
+ bfd_vma off = (bfd_vma) - 1;
+ asection *basegot = globals->root.sgot;
+ bool dyn = globals->root.dynamic_sections_created;
+
+ if (h != NULL)
+ {
+ BFD_ASSERT (basegot != NULL);
+ off = h->got.offset;
+ BFD_ASSERT (off != (bfd_vma) - 1);
+ if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info), h)
+ || (bfd_link_pic (info)
+ && SYMBOL_REFERENCES_LOCAL (info, h))
+ || (ELF_ST_VISIBILITY (h->other)
+ && h->root.type == bfd_link_hash_undefweak))
+ {
+ /* This is actually a static link, or it is a -Bsymbolic link
+ and the symbol is defined locally. We must initialize this
+ entry in the global offset table. Since the offset must
+ always be a multiple of 8 (4 in the case of ILP32), we use
+ the least significant bit to record whether we have
+ initialized it already.
+ When doing a dynamic link, we create a .rel(a).got relocation
+ entry to initialize the value. This is done in the
+ finish_dynamic_symbol routine. */
+ if ((off & 1) != 0)
+ off &= ~1;
+ else
+ {
+ bfd_put_NN (output_bfd, value, basegot->contents + off);
+ h->got.offset |= 1;
+ }
+ }
+ else
+ *unresolved_reloc_p = false;
+
+ off = off + basegot->output_section->vma + basegot->output_offset;
+ }
+
+ return off;
+}
+
+/* Change R_TYPE to a more efficient access model where possible,
+ return the new reloc type. */
+
+static bfd_reloc_code_real_type
+aarch64_tls_transition_without_check (bfd_reloc_code_real_type r_type,
+ struct elf_link_hash_entry *h,
+ struct bfd_link_info *info)
+{
+ bool local_exec = bfd_link_executable (info)
+ && SYMBOL_REFERENCES_LOCAL (info, h);
+
+ switch (r_type)
+ {
+ case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21:
+ case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21:
+ return (local_exec
+ ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1
+ : BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21);
+
+ case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21:
+ return (local_exec
+ ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC
+ : r_type);
+
+ case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19:
+ return (local_exec
+ ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1
+ : BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19);
+
+ case BFD_RELOC_AARCH64_TLSDESC_LDR:
+ return (local_exec
+ ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC
+ : BFD_RELOC_AARCH64_NONE);
+
+ case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC:
+ return (local_exec
+ ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC
+ : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC);
+
+ case BFD_RELOC_AARCH64_TLSDESC_OFF_G1:
+ return (local_exec
+ ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2
+ : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1);
+
+ case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC:
+ case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC:
+ return (local_exec
+ ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC
+ : BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC);
+
+ case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21:
+ return local_exec ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1 : r_type;
+
+ case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC:
+ return local_exec ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC : r_type;
+
+ case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19:
+ return r_type;
+
+ case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21:
+ return (local_exec
+ ? BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12
+ : BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19);
+
+ case BFD_RELOC_AARCH64_TLSDESC_ADD:
+ case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12:
+ case BFD_RELOC_AARCH64_TLSDESC_CALL:
+ /* Instructions with these relocations will become NOPs. */
+ return BFD_RELOC_AARCH64_NONE;
+
+ case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC:
+ case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21:
+ case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21:
+ return local_exec ? BFD_RELOC_AARCH64_NONE : r_type;
+
+#if ARCH_SIZE == 64
+ case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC:
+ return local_exec
+ ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC
+ : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC;
+
+ case BFD_RELOC_AARCH64_TLSGD_MOVW_G1:
+ return local_exec
+ ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2
+ : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1;
+#endif
+
+ default:
+ break;
+ }
+
+ return r_type;
+}
+
+static unsigned int
+aarch64_reloc_got_type (bfd_reloc_code_real_type r_type)
+{
+ switch (r_type)
+ {
+ case BFD_RELOC_AARCH64_ADR_GOT_PAGE:
+ case BFD_RELOC_AARCH64_GOT_LD_PREL19:
+ case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14:
+ case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC:
+ case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15:
+ case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15:
+ case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC:
+ case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC:
+ case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1:
+ return GOT_NORMAL;
+
+ case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC:
+ case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21:
+ case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21:
+ case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC:
+ case BFD_RELOC_AARCH64_TLSGD_MOVW_G1:
+ case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC:
+ case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21:
+ case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21:
+ return GOT_TLS_GD;
+
+ case BFD_RELOC_AARCH64_TLSDESC_ADD:
+ case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12:
+ case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21:
+ case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21:
+ case BFD_RELOC_AARCH64_TLSDESC_CALL:
+ case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC:
+ case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12:
+ case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19:
+ case BFD_RELOC_AARCH64_TLSDESC_LDR:
+ case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC:
+ case BFD_RELOC_AARCH64_TLSDESC_OFF_G1:
+ return GOT_TLSDESC_GD;
+
+ case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21:
+ case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC:
+ case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC:
+ case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19:
+ case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC:
+ case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1:
+ return GOT_TLS_IE;
+
+ default:
+ break;
+ }
+ return GOT_UNKNOWN;
+}
+
+static bool
+aarch64_can_relax_tls (bfd *input_bfd,
+ struct bfd_link_info *info,
+ bfd_reloc_code_real_type r_type,
+ struct elf_link_hash_entry *h,
+ unsigned long r_symndx)
+{
+ unsigned int symbol_got_type;
+ unsigned int reloc_got_type;
+
+ if (! IS_AARCH64_TLS_RELAX_RELOC (r_type))
+ return false;
+
+ symbol_got_type = elfNN_aarch64_symbol_got_type (h, input_bfd, r_symndx);
+ reloc_got_type = aarch64_reloc_got_type (r_type);
+
+ if (symbol_got_type == GOT_TLS_IE && GOT_TLS_GD_ANY_P (reloc_got_type))
+ return true;
+
+ if (!bfd_link_executable (info))
+ return false;
+
+ if (h && h->root.type == bfd_link_hash_undefweak)
+ return false;
+
+ return true;
+}
+
+/* Given the relocation code R_TYPE, return the relaxed bfd reloc
+ enumerator. */
+
+static bfd_reloc_code_real_type
+aarch64_tls_transition (bfd *input_bfd,
+ struct bfd_link_info *info,
+ unsigned int r_type,
+ struct elf_link_hash_entry *h,
+ unsigned long r_symndx)
+{
+ bfd_reloc_code_real_type bfd_r_type
+ = elfNN_aarch64_bfd_reloc_from_type (input_bfd, r_type);
+
+ if (! aarch64_can_relax_tls (input_bfd, info, bfd_r_type, h, r_symndx))
+ return bfd_r_type;
+
+ return aarch64_tls_transition_without_check (bfd_r_type, h, info);
+}
+
+/* Return the base VMA address which should be subtracted from real addresses
+ when resolving R_AARCH64_TLS_DTPREL relocation. */
+
+static bfd_vma
+dtpoff_base (struct bfd_link_info *info)
+{
+ /* If tls_sec is NULL, we should have signalled an error already. */
+ BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL);
+ return elf_hash_table (info)->tls_sec->vma;
+}
+
+/* Return the base VMA address which should be subtracted from real addresses
+ when resolving R_AARCH64_TLS_GOTTPREL64 relocations. */
+
+static bfd_vma
+tpoff_base (struct bfd_link_info *info)
+{
+ struct elf_link_hash_table *htab = elf_hash_table (info);
+
+ /* If tls_sec is NULL, we should have signalled an error already. */
+ BFD_ASSERT (htab->tls_sec != NULL);
+
+ bfd_vma base = align_power ((bfd_vma) TCB_SIZE,
+ htab->tls_sec->alignment_power);
+ return htab->tls_sec->vma - base;
+}
+
+static bfd_vma *
+symbol_got_offset_ref (bfd *input_bfd, struct elf_link_hash_entry *h,
+ unsigned long r_symndx)
+{
+ /* Calculate the address of the GOT entry for symbol
+ referred to in h. */
+ if (h != NULL)
+ return &h->got.offset;
+ else
+ {
+ /* local symbol */
+ struct elf_aarch64_local_symbol *l;
+
+ l = elf_aarch64_locals (input_bfd);
+ return &l[r_symndx].got_offset;
+ }
+}
+
+static void
+symbol_got_offset_mark (bfd *input_bfd, struct elf_link_hash_entry *h,
+ unsigned long r_symndx)
+{
+ bfd_vma *p;
+ p = symbol_got_offset_ref (input_bfd, h, r_symndx);
+ *p |= 1;
+}
+
+static int
+symbol_got_offset_mark_p (bfd *input_bfd, struct elf_link_hash_entry *h,
+ unsigned long r_symndx)
+{
+ bfd_vma value;
+ value = * symbol_got_offset_ref (input_bfd, h, r_symndx);
+ return value & 1;
+}
+
+static bfd_vma
+symbol_got_offset (bfd *input_bfd, struct elf_link_hash_entry *h,
+ unsigned long r_symndx)
+{
+ bfd_vma value;
+ value = * symbol_got_offset_ref (input_bfd, h, r_symndx);
+ value &= ~1;
+ return value;
+}
+
+static bfd_vma *
+symbol_tlsdesc_got_offset_ref (bfd *input_bfd, struct elf_link_hash_entry *h,
+ unsigned long r_symndx)
+{
+ /* Calculate the address of the GOT entry for symbol
+ referred to in h. */
+ if (h != NULL)
+ {
+ struct elf_aarch64_link_hash_entry *eh;
+ eh = (struct elf_aarch64_link_hash_entry *) h;
+ return &eh->tlsdesc_got_jump_table_offset;
+ }
+ else
+ {
+ /* local symbol */
+ struct elf_aarch64_local_symbol *l;
+
+ l = elf_aarch64_locals (input_bfd);
+ return &l[r_symndx].tlsdesc_got_jump_table_offset;
+ }
+}
+
+static void
+symbol_tlsdesc_got_offset_mark (bfd *input_bfd, struct elf_link_hash_entry *h,
+ unsigned long r_symndx)
+{
+ bfd_vma *p;
+ p = symbol_tlsdesc_got_offset_ref (input_bfd, h, r_symndx);
+ *p |= 1;
+}
+
+static int
+symbol_tlsdesc_got_offset_mark_p (bfd *input_bfd,
+ struct elf_link_hash_entry *h,
+ unsigned long r_symndx)
+{
+ bfd_vma value;
+ value = * symbol_tlsdesc_got_offset_ref (input_bfd, h, r_symndx);
+ return value & 1;
+}
+
+static bfd_vma
+symbol_tlsdesc_got_offset (bfd *input_bfd, struct elf_link_hash_entry *h,
+ unsigned long r_symndx)
+{
+ bfd_vma value;
+ value = * symbol_tlsdesc_got_offset_ref (input_bfd, h, r_symndx);
+ value &= ~1;
+ return value;
+}
+
+/* Data for make_branch_to_erratum_835769_stub(). */
+
+struct erratum_835769_branch_to_stub_data
+{
+ struct bfd_link_info *info;
+ asection *output_section;
+ bfd_byte *contents;
+};
+
+/* Helper to insert branches to erratum 835769 stubs in the right
+ places for a particular section. */
+
+static bool
+make_branch_to_erratum_835769_stub (struct bfd_hash_entry *gen_entry,
+ void *in_arg)
+{
+ struct elf_aarch64_stub_hash_entry *stub_entry;
+ struct erratum_835769_branch_to_stub_data *data;
+ bfd_byte *contents;
+ unsigned long branch_insn = 0;
+ bfd_vma veneered_insn_loc, veneer_entry_loc;
+ bfd_signed_vma branch_offset;
+ unsigned int target;
+ bfd *abfd;
+
+ stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry;
+ data = (struct erratum_835769_branch_to_stub_data *) in_arg;
+
+ if (stub_entry->target_section != data->output_section
+ || stub_entry->stub_type != aarch64_stub_erratum_835769_veneer)
+ return true;
+
+ contents = data->contents;
+ veneered_insn_loc = stub_entry->target_section->output_section->vma
+ + stub_entry->target_section->output_offset
+ + stub_entry->target_value;
+ veneer_entry_loc = stub_entry->stub_sec->output_section->vma
+ + stub_entry->stub_sec->output_offset
+ + stub_entry->stub_offset;
+ branch_offset = veneer_entry_loc - veneered_insn_loc;
+
+ abfd = stub_entry->target_section->owner;
+ if (!aarch64_valid_branch_p (veneer_entry_loc, veneered_insn_loc))
+ _bfd_error_handler
+ (_("%pB: error: erratum 835769 stub out "
+ "of range (input file too large)"), abfd);
+
+ target = stub_entry->target_value;
+ branch_insn = 0x14000000;
+ branch_offset >>= 2;
+ branch_offset &= 0x3ffffff;
+ branch_insn |= branch_offset;
+ bfd_putl32 (branch_insn, &contents[target]);
+
+ return true;
+}
+
+
+static bool
+_bfd_aarch64_erratum_843419_branch_to_stub (struct bfd_hash_entry *gen_entry,
+ void *in_arg)
+{
+ struct elf_aarch64_stub_hash_entry *stub_entry
+ = (struct elf_aarch64_stub_hash_entry *) gen_entry;
+ struct erratum_835769_branch_to_stub_data *data
+ = (struct erratum_835769_branch_to_stub_data *) in_arg;
+ struct bfd_link_info *info;
+ struct elf_aarch64_link_hash_table *htab;
+ bfd_byte *contents;
+ asection *section;
+ bfd *abfd;
+ bfd_vma place;
+ uint32_t insn;
+
+ info = data->info;
+ contents = data->contents;
+ section = data->output_section;
+
+ htab = elf_aarch64_hash_table (info);
+
+ if (stub_entry->target_section != section
+ || stub_entry->stub_type != aarch64_stub_erratum_843419_veneer)
+ return true;
+
+ BFD_ASSERT (((htab->fix_erratum_843419 & ERRAT_ADRP) && stub_entry->stub_sec)
+ || (htab->fix_erratum_843419 & ERRAT_ADR));
+
+ /* Only update the stub section if we have one. We should always have one if
+ we're allowed to use the ADRP errata workaround, otherwise it is not
+ required. */
+ if (stub_entry->stub_sec)
+ {
+ insn = bfd_getl32 (contents + stub_entry->target_value);
+ bfd_putl32 (insn,
+ stub_entry->stub_sec->contents + stub_entry->stub_offset);
+ }
+
+ place = (section->output_section->vma + section->output_offset
+ + stub_entry->adrp_offset);
+ insn = bfd_getl32 (contents + stub_entry->adrp_offset);
+
+ if (!_bfd_aarch64_adrp_p (insn))
+ abort ();
+
+ bfd_signed_vma imm =
+ (_bfd_aarch64_sign_extend
+ ((bfd_vma) _bfd_aarch64_decode_adrp_imm (insn) << 12, 33)
+ - (place & 0xfff));
+
+ if ((htab->fix_erratum_843419 & ERRAT_ADR)
+ && (imm >= AARCH64_MIN_ADRP_IMM && imm <= AARCH64_MAX_ADRP_IMM))
+ {
+ insn = (_bfd_aarch64_reencode_adr_imm (AARCH64_ADR_OP, imm)
+ | AARCH64_RT (insn));
+ bfd_putl32 (insn, contents + stub_entry->adrp_offset);
+ /* Stub is not needed, don't map it out. */
+ stub_entry->stub_type = aarch64_stub_none;
+ }
+ else if (htab->fix_erratum_843419 & ERRAT_ADRP)
+ {
+ bfd_vma veneered_insn_loc;
+ bfd_vma veneer_entry_loc;
+ bfd_signed_vma branch_offset;
+ uint32_t branch_insn;
+
+ veneered_insn_loc = stub_entry->target_section->output_section->vma
+ + stub_entry->target_section->output_offset
+ + stub_entry->target_value;
+ veneer_entry_loc = stub_entry->stub_sec->output_section->vma
+ + stub_entry->stub_sec->output_offset
+ + stub_entry->stub_offset;
+ branch_offset = veneer_entry_loc - veneered_insn_loc;
+
+ abfd = stub_entry->target_section->owner;
+ if (!aarch64_valid_branch_p (veneer_entry_loc, veneered_insn_loc))
+ _bfd_error_handler
+ (_("%pB: error: erratum 843419 stub out "
+ "of range (input file too large)"), abfd);
+
+ branch_insn = 0x14000000;
+ branch_offset >>= 2;
+ branch_offset &= 0x3ffffff;
+ branch_insn |= branch_offset;
+ bfd_putl32 (branch_insn, contents + stub_entry->target_value);
+ }
+ else
+ {
+ abfd = stub_entry->target_section->owner;
+ _bfd_error_handler
+ (_("%pB: error: erratum 843419 immediate 0x%" PRIx64
+ " out of range for ADR (input file too large) and "
+ "--fix-cortex-a53-843419=adr used. Run the linker with "
+ "--fix-cortex-a53-843419=full instead"),
+ abfd, (uint64_t) (bfd_vma) imm);
+ bfd_set_error (bfd_error_bad_value);
+ /* This function is called inside a hashtable traversal and the error
+ handlers called above turn into non-fatal errors. Which means this
+ case ld returns an exit code 0 and also produces a broken object file.
+ To prevent this, issue a hard abort. */
+ BFD_FAIL ();
+ }
+ return true;
+}
+
+
+static bool
+elfNN_aarch64_write_section (bfd *output_bfd ATTRIBUTE_UNUSED,
+ struct bfd_link_info *link_info,
+ asection *sec,
+ bfd_byte *contents)
+
+{
+ struct elf_aarch64_link_hash_table *globals =
+ elf_aarch64_hash_table (link_info);
+
+ if (globals == NULL)
+ return false;
+
+ /* Fix code to point to erratum 835769 stubs. */
+ if (globals->fix_erratum_835769)
+ {
+ struct erratum_835769_branch_to_stub_data data;
+
+ data.info = link_info;
+ data.output_section = sec;
+ data.contents = contents;
+ bfd_hash_traverse (&globals->stub_hash_table,
+ make_branch_to_erratum_835769_stub, &data);
+ }
+
+ if (globals->fix_erratum_843419)
+ {
+ struct erratum_835769_branch_to_stub_data data;
+
+ data.info = link_info;
+ data.output_section = sec;
+ data.contents = contents;
+ bfd_hash_traverse (&globals->stub_hash_table,
+ _bfd_aarch64_erratum_843419_branch_to_stub, &data);
+ }
+
+ return false;
+}
+
+/* Return TRUE if RELOC is a relocation against the base of GOT table. */
+
+static bool
+aarch64_relocation_aginst_gp_p (bfd_reloc_code_real_type reloc)
+{
+ return (reloc == BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14
+ || reloc == BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15
+ || reloc == BFD_RELOC_AARCH64_LD64_GOTOFF_LO15
+ || reloc == BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC
+ || reloc == BFD_RELOC_AARCH64_MOVW_GOTOFF_G1);
+}
+
+/* Perform a relocation as part of a final link. The input relocation type
+ should be TLS relaxed. */
+
+static bfd_reloc_status_type
+elfNN_aarch64_final_link_relocate (reloc_howto_type *howto,
+ bfd *input_bfd,
+ bfd *output_bfd,
+ asection *input_section,
+ bfd_byte *contents,
+ Elf_Internal_Rela *rel,
+ bfd_vma value,
+ struct bfd_link_info *info,
+ asection *sym_sec,
+ struct elf_link_hash_entry *h,
+ bool *unresolved_reloc_p,
+ bool save_addend,
+ bfd_vma *saved_addend,
+ Elf_Internal_Sym *sym)
+{
+ Elf_Internal_Shdr *symtab_hdr;
+ unsigned int r_type = howto->type;
+ bfd_reloc_code_real_type bfd_r_type
+ = elfNN_aarch64_bfd_reloc_from_howto (howto);
+ unsigned long r_symndx;
+ bfd_byte *hit_data = contents + rel->r_offset;
+ bfd_vma place, off, got_entry_addr = 0;
+ bfd_signed_vma signed_addend;
+ struct elf_aarch64_link_hash_table *globals;
+ bool weak_undef_p;
+ bool relative_reloc;
+ asection *base_got;
+ bfd_vma orig_value = value;
+ bool resolved_to_zero;
+ bool abs_symbol_p;
+
+ globals = elf_aarch64_hash_table (info);
+
+ symtab_hdr = &elf_symtab_hdr (input_bfd);
+
+ BFD_ASSERT (is_aarch64_elf (input_bfd));
+
+ r_symndx = ELFNN_R_SYM (rel->r_info);
+
+ place = input_section->output_section->vma
+ + input_section->output_offset + rel->r_offset;
+
+ /* Get addend, accumulating the addend for consecutive relocs
+ which refer to the same offset. */
+ signed_addend = saved_addend ? *saved_addend : 0;
+ signed_addend += rel->r_addend;
+
+ weak_undef_p = (h ? h->root.type == bfd_link_hash_undefweak
+ : bfd_is_und_section (sym_sec));
+ abs_symbol_p = h != NULL && bfd_is_abs_symbol (&h->root);
+
+
+ /* Since STT_GNU_IFUNC symbol must go through PLT, we handle
+ it here if it is defined in a non-shared object. */
+ if (h != NULL
+ && h->type == STT_GNU_IFUNC
+ && (input_section->flags & SEC_ALLOC)
+ && h->def_regular)
+ {
+ asection *plt;
+ const char *name;
+ bfd_vma addend = 0;
+
+ if ((input_section->flags & SEC_ALLOC) == 0)
+ {
+ /* If this is a SHT_NOTE section without SHF_ALLOC, treat
+ STT_GNU_IFUNC symbol as STT_FUNC. */
+ if (elf_section_type (input_section) == SHT_NOTE)
+ goto skip_ifunc;
+
+ /* Dynamic relocs are not propagated for SEC_DEBUGGING
+ sections because such sections are not SEC_ALLOC and
+ thus ld.so will not process them. */
+ if ((input_section->flags & SEC_DEBUGGING) != 0)
+ return bfd_reloc_ok;
+
+ if (h->root.root.string)
+ name = h->root.root.string;
+ else
+ name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, NULL);
+ _bfd_error_handler
+ /* xgettext:c-format */
+ (_("%pB(%pA+%#" PRIx64 "): "
+ "unresolvable %s relocation against symbol `%s'"),
+ input_bfd, input_section, (uint64_t) rel->r_offset,
+ howto->name, name);
+ bfd_set_error (bfd_error_bad_value);
+ return bfd_reloc_notsupported;
+ }
+ else if (h->plt.offset == (bfd_vma) -1)
+ goto bad_ifunc_reloc;
+
+ /* STT_GNU_IFUNC symbol must go through PLT. */
+ plt = globals->root.splt ? globals->root.splt : globals->root.iplt;
+ value = (plt->output_section->vma + plt->output_offset + h->plt.offset);
+
+ switch (bfd_r_type)
+ {
+ default:
+ bad_ifunc_reloc:
+ if (h->root.root.string)
+ name = h->root.root.string;
+ else
+ name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
+ NULL);
+ _bfd_error_handler
+ /* xgettext:c-format */
+ (_("%pB: relocation %s against STT_GNU_IFUNC "
+ "symbol `%s' isn't handled by %s"), input_bfd,
+ howto->name, name, __FUNCTION__);
+ bfd_set_error (bfd_error_bad_value);
+ return bfd_reloc_notsupported;
+
+ case BFD_RELOC_AARCH64_NN:
+ if (rel->r_addend != 0)
+ {
+ if (h->root.root.string)
+ name = h->root.root.string;
+ else
+ name = bfd_elf_sym_name (input_bfd, symtab_hdr,
+ sym, NULL);
+ _bfd_error_handler
+ /* xgettext:c-format */
+ (_("%pB: relocation %s against STT_GNU_IFUNC "
+ "symbol `%s' has non-zero addend: %" PRId64),
+ input_bfd, howto->name, name, (int64_t) rel->r_addend);
+ bfd_set_error (bfd_error_bad_value);
+ return bfd_reloc_notsupported;
+ }
+
+ /* Generate dynamic relocation only when there is a
+ non-GOT reference in a shared object. */
+ if (bfd_link_pic (info) && h->non_got_ref)
+ {
+ Elf_Internal_Rela outrel;
+ asection *sreloc;
+
+ /* Need a dynamic relocation to get the real function
+ address. */
+ outrel.r_offset = _bfd_elf_section_offset (output_bfd,
+ info,
+ input_section,
+ rel->r_offset);
+ if (outrel.r_offset == (bfd_vma) -1
+ || outrel.r_offset == (bfd_vma) -2)
+ abort ();
+
+ outrel.r_offset += (input_section->output_section->vma
+ + input_section->output_offset);
+
+ if (h->dynindx == -1
+ || h->forced_local
+ || bfd_link_executable (info))
+ {
+ /* This symbol is resolved locally. */
+ outrel.r_info = ELFNN_R_INFO (0, AARCH64_R (IRELATIVE));
+ outrel.r_addend = (h->root.u.def.value
+ + h->root.u.def.section->output_section->vma
+ + h->root.u.def.section->output_offset);
+ }
+ else
+ {
+ outrel.r_info = ELFNN_R_INFO (h->dynindx, r_type);
+ outrel.r_addend = 0;
+ }
+
+ sreloc = globals->root.irelifunc;
+ elf_append_rela (output_bfd, sreloc, &outrel);
+
+ /* If this reloc is against an external symbol, we
+ do not want to fiddle with the addend. Otherwise,
+ we need to include the symbol value so that it
+ becomes an addend for the dynamic reloc. For an
+ internal symbol, we have updated addend. */
+ return bfd_reloc_ok;
+ }
+ /* FALLTHROUGH */
+ case BFD_RELOC_AARCH64_CALL26:
+ case BFD_RELOC_AARCH64_JUMP26:
+ value = _bfd_aarch64_elf_resolve_relocation (input_bfd, bfd_r_type,
+ place, value,
+ signed_addend,
+ weak_undef_p);
+ return _bfd_aarch64_elf_put_addend (input_bfd, hit_data, bfd_r_type,
+ howto, value);
+ case BFD_RELOC_AARCH64_ADR_GOT_PAGE:
+ case BFD_RELOC_AARCH64_GOT_LD_PREL19:
+ case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14:
+ case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC:
+ case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15:
+ case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC:
+ case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1:
+ case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15:
+ case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC:
+ base_got = globals->root.sgot;
+ off = h->got.offset;
+
+ if (base_got == NULL)
+ abort ();
+
+ if (off == (bfd_vma) -1)
+ {
+ bfd_vma plt_index;
+
+ /* We can't use h->got.offset here to save state, or
+ even just remember the offset, as finish_dynamic_symbol
+ would use that as offset into .got. */
+
+ if (globals->root.splt != NULL)
+ {
+ plt_index = ((h->plt.offset - globals->plt_header_size) /
+ globals->plt_entry_size);
+ off = (plt_index + 3) * GOT_ENTRY_SIZE;
+ base_got = globals->root.sgotplt;
+ }
+ else
+ {
+ plt_index = h->plt.offset / globals->plt_entry_size;
+ off = plt_index * GOT_ENTRY_SIZE;
+ base_got = globals->root.igotplt;
+ }
+
+ if (h->dynindx == -1
+ || h->forced_local
+ || info->symbolic)
+ {
+ /* This references the local definition. We must
+ initialize this entry in the global offset table.
+ Since the offset must always be a multiple of 8,
+ we use the least significant bit to record
+ whether we have initialized it already.
+
+ When doing a dynamic link, we create a .rela.got
+ relocation entry to initialize the value. This
+ is done in the finish_dynamic_symbol routine. */
+ if ((off & 1) != 0)
+ off &= ~1;
+ else
+ {
+ bfd_put_NN (output_bfd, value,
+ base_got->contents + off);
+ /* Note that this is harmless as -1 | 1 still is -1. */
+ h->got.offset |= 1;
+ }
+ }
+ value = (base_got->output_section->vma
+ + base_got->output_offset + off);
+ }
+ else
+ value = aarch64_calculate_got_entry_vma (h, globals, info,
+ value, output_bfd,
+ unresolved_reloc_p);
+
+ if (aarch64_relocation_aginst_gp_p (bfd_r_type))
+ addend = (globals->root.sgot->output_section->vma
+ + globals->root.sgot->output_offset);
+
+ value = _bfd_aarch64_elf_resolve_relocation (input_bfd, bfd_r_type,
+ place, value,
+ addend, weak_undef_p);
+ return _bfd_aarch64_elf_put_addend (input_bfd, hit_data, bfd_r_type, howto, value);
+ case BFD_RELOC_AARCH64_ADD_LO12:
+ case BFD_RELOC_AARCH64_ADR_HI21_PCREL:
+ break;
+ }
+ }
+
+ skip_ifunc:
+ resolved_to_zero = (h != NULL
+ && UNDEFWEAK_NO_DYNAMIC_RELOC (info, h));
+
+ switch (bfd_r_type)
+ {
+ case BFD_RELOC_AARCH64_NONE:
+ case BFD_RELOC_AARCH64_TLSDESC_ADD:
+ case BFD_RELOC_AARCH64_TLSDESC_CALL:
+ case BFD_RELOC_AARCH64_TLSDESC_LDR:
+ *unresolved_reloc_p = false;
+ return bfd_reloc_ok;
+
+ case BFD_RELOC_AARCH64_NN:
+
+ /* When generating a shared object or relocatable executable, these
+ relocations are copied into the output file to be resolved at
+ run time. */
+ if (((bfd_link_pic (info)
+ || globals->root.is_relocatable_executable)
+ && (input_section->flags & SEC_ALLOC)
+ && (h == NULL
+ || (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
+ && !resolved_to_zero)
+ || h->root.type != bfd_link_hash_undefweak))
+ /* Or we are creating an executable, we may need to keep relocations
+ for symbols satisfied by a dynamic library if we manage to avoid
+ copy relocs for the symbol. */
+ || (ELIMINATE_COPY_RELOCS
+ && !bfd_link_pic (info)
+ && h != NULL
+ && (input_section->flags & SEC_ALLOC)
+ && h->dynindx != -1
+ && !h->non_got_ref
+ && ((h->def_dynamic
+ && !h->def_regular)
+ || h->root.type == bfd_link_hash_undefweak
+ || h->root.type == bfd_link_hash_undefined)))
+ {
+ Elf_Internal_Rela outrel;
+ bfd_byte *loc;
+ bool skip, relocate;
+ asection *sreloc;
+
+ *unresolved_reloc_p = false;
+
+ skip = false;
+ relocate = false;
+
+ outrel.r_addend = signed_addend;
+ outrel.r_offset =
+ _bfd_elf_section_offset (output_bfd, info, input_section,
+ rel->r_offset);
+ if (outrel.r_offset == (bfd_vma) - 1)
+ skip = true;
+ else if (outrel.r_offset == (bfd_vma) - 2)
+ {
+ skip = true;
+ relocate = true;
+ }
+ else if (abs_symbol_p)
+ {
+ /* Local absolute symbol. */
+ skip = (h->forced_local || (h->dynindx == -1));
+ relocate = skip;
+ }
+
+ outrel.r_offset += (input_section->output_section->vma
+ + input_section->output_offset);
+
+ if (skip)
+ memset (&outrel, 0, sizeof outrel);
+ else if (h != NULL
+ && h->dynindx != -1
+ && (!bfd_link_pic (info)
+ || !(bfd_link_pie (info) || SYMBOLIC_BIND (info, h))
+ || !h->def_regular))
+ outrel.r_info = ELFNN_R_INFO (h->dynindx, r_type);
+ else
+ {
+ int symbol;
+
+ /* On SVR4-ish systems, the dynamic loader cannot
+ relocate the text and data segments independently,
+ so the symbol does not matter. */
+ symbol = 0;
+ relocate = !globals->no_apply_dynamic_relocs;
+ outrel.r_info = ELFNN_R_INFO (symbol, AARCH64_R (RELATIVE));
+ outrel.r_addend += value;
+ }
+
+ sreloc = elf_section_data (input_section)->sreloc;
+ if (sreloc == NULL || sreloc->contents == NULL)
+ return bfd_reloc_notsupported;
+
+ loc = sreloc->contents + sreloc->reloc_count++ * RELOC_SIZE (globals);
+ bfd_elfNN_swap_reloca_out (output_bfd, &outrel, loc);
+
+ if (sreloc->reloc_count * RELOC_SIZE (globals) > sreloc->size)
+ {
+ /* Sanity to check that we have previously allocated
+ sufficient space in the relocation section for the
+ number of relocations we actually want to emit. */
+ abort ();
+ }
+
+ /* If this reloc is against an external symbol, we do not want to
+ fiddle with the addend. Otherwise, we need to include the symbol
+ value so that it becomes an addend for the dynamic reloc. */
+ if (!relocate)
+ return bfd_reloc_ok;
+
+ return _bfd_final_link_relocate (howto, input_bfd, input_section,
+ contents, rel->r_offset, value,
+ signed_addend);
+ }
+ else
+ value += signed_addend;
+ break;
+
+ case BFD_RELOC_AARCH64_CALL26:
+ case BFD_RELOC_AARCH64_JUMP26:
+ {
+ asection *splt = globals->root.splt;
+ bool via_plt_p =
+ splt != NULL && h != NULL && h->plt.offset != (bfd_vma) - 1;
+
+ /* A call to an undefined weak symbol is converted to a jump to
+ the next instruction unless a PLT entry will be created.
+ The jump to the next instruction is optimized as a NOP.
+ Do the same for local undefined symbols. */
+ if (weak_undef_p && ! via_plt_p)
+ {
+ bfd_putl32 (INSN_NOP, hit_data);
+ return bfd_reloc_ok;
+ }
+
+ /* If the call goes through a PLT entry, make sure to
+ check distance to the right destination address. */
+ if (via_plt_p)
+ value = (splt->output_section->vma
+ + splt->output_offset + h->plt.offset);
+
+ /* Check if a stub has to be inserted because the destination
+ is too far away. */
+ struct elf_aarch64_stub_hash_entry *stub_entry = NULL;
+
+ /* If the branch destination is directed to plt stub, "value" will be
+ the final destination, otherwise we should plus signed_addend, it may
+ contain non-zero value, for example call to local function symbol
+ which are turned into "sec_sym + sec_off", and sec_off is kept in
+ signed_addend. */
+ if (! aarch64_valid_branch_p (via_plt_p ? value : value + signed_addend,
+ place))
+ /* The target is out of reach, so redirect the branch to
+ the local stub for this function. */
+ stub_entry = elfNN_aarch64_get_stub_entry (input_section, sym_sec, h,
+ rel, globals);
+ if (stub_entry != NULL)
+ {
+ value = (stub_entry->stub_offset
+ + stub_entry->stub_sec->output_offset
+ + stub_entry->stub_sec->output_section->vma);
+
+ /* We have redirected the destination to stub entry address,
+ so ignore any addend record in the original rela entry. */
+ signed_addend = 0;
+ }
+ }
+ value = _bfd_aarch64_elf_resolve_relocation (input_bfd, bfd_r_type,
+ place, value,
+ signed_addend, weak_undef_p);
+ *unresolved_reloc_p = false;
+ break;
+
+ case BFD_RELOC_AARCH64_16_PCREL:
+ case BFD_RELOC_AARCH64_32_PCREL:
+ case BFD_RELOC_AARCH64_64_PCREL:
+ case BFD_RELOC_AARCH64_ADR_HI21_NC_PCREL:
+ case BFD_RELOC_AARCH64_ADR_HI21_PCREL:
+ case BFD_RELOC_AARCH64_ADR_LO21_PCREL:
+ case BFD_RELOC_AARCH64_LD_LO19_PCREL:
+ case BFD_RELOC_AARCH64_MOVW_PREL_G0:
+ case BFD_RELOC_AARCH64_MOVW_PREL_G0_NC:
+ case BFD_RELOC_AARCH64_MOVW_PREL_G1:
+ case BFD_RELOC_AARCH64_MOVW_PREL_G1_NC:
+ case BFD_RELOC_AARCH64_MOVW_PREL_G2:
+ case BFD_RELOC_AARCH64_MOVW_PREL_G2_NC:
+ case BFD_RELOC_AARCH64_MOVW_PREL_G3:
+ if (bfd_link_pic (info)
+ && (input_section->flags & SEC_ALLOC) != 0
+ && (input_section->flags & SEC_READONLY) != 0
+ && !_bfd_elf_symbol_refs_local_p (h, info, 1))
+ {
+ int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START;
+
+ _bfd_error_handler
+ /* xgettext:c-format */
+ (_("%pB: relocation %s against symbol `%s' which may bind "
+ "externally can not be used when making a shared object; "
+ "recompile with -fPIC"),
+ input_bfd, elfNN_aarch64_howto_table[howto_index].name,
+ h->root.root.string);
+ bfd_set_error (bfd_error_bad_value);
+ return bfd_reloc_notsupported;
+ }
+ value = _bfd_aarch64_elf_resolve_relocation (input_bfd, bfd_r_type,
+ place, value,
+ signed_addend,
+ weak_undef_p);
+ break;
+
+ case BFD_RELOC_AARCH64_BRANCH19:
+ case BFD_RELOC_AARCH64_TSTBR14:
+ if (h && h->root.type == bfd_link_hash_undefined)
+ {
+ _bfd_error_handler
+ /* xgettext:c-format */
+ (_("%pB: conditional branch to undefined symbol `%s' "
+ "not allowed"), input_bfd, h->root.root.string);
+ bfd_set_error (bfd_error_bad_value);
+ return bfd_reloc_notsupported;
+ }
+ /* Fall through. */
+
+ case BFD_RELOC_AARCH64_16:
+#if ARCH_SIZE == 64
+ case BFD_RELOC_AARCH64_32:
+#endif
+ case BFD_RELOC_AARCH64_ADD_LO12:
+ case BFD_RELOC_AARCH64_LDST128_LO12:
+ case BFD_RELOC_AARCH64_LDST16_LO12:
+ case BFD_RELOC_AARCH64_LDST32_LO12:
+ case BFD_RELOC_AARCH64_LDST64_LO12:
+ case BFD_RELOC_AARCH64_LDST8_LO12:
+ case BFD_RELOC_AARCH64_MOVW_G0:
+ case BFD_RELOC_AARCH64_MOVW_G0_NC:
+ case BFD_RELOC_AARCH64_MOVW_G0_S:
+ case BFD_RELOC_AARCH64_MOVW_G1:
+ case BFD_RELOC_AARCH64_MOVW_G1_NC:
+ case BFD_RELOC_AARCH64_MOVW_G1_S:
+ case BFD_RELOC_AARCH64_MOVW_G2:
+ case BFD_RELOC_AARCH64_MOVW_G2_NC:
+ case BFD_RELOC_AARCH64_MOVW_G2_S:
+ case BFD_RELOC_AARCH64_MOVW_G3:
+ value = _bfd_aarch64_elf_resolve_relocation (input_bfd, bfd_r_type,
+ place, value,
+ signed_addend, weak_undef_p);
+ break;
+
+ case BFD_RELOC_AARCH64_ADR_GOT_PAGE:
+ case BFD_RELOC_AARCH64_GOT_LD_PREL19:
+ case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14:
+ case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC:
+ case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15:
+ case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC:
+ case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15:
+ case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC:
+ case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1:
+ if (globals->root.sgot == NULL)
+ BFD_ASSERT (h != NULL);
+
+ relative_reloc = false;
+ if (h != NULL)
+ {
+ bfd_vma addend = 0;
+
+ /* If a symbol is not dynamic and is not undefined weak, bind it
+ locally and generate a RELATIVE relocation under PIC mode.
+
+ NOTE: one symbol may be referenced by several relocations, we
+ should only generate one RELATIVE relocation for that symbol.
+ Therefore, check GOT offset mark first. */
+ if (h->dynindx == -1
+ && !h->forced_local
+ && h->root.type != bfd_link_hash_undefweak
+ && bfd_link_pic (info)
+ && !symbol_got_offset_mark_p (input_bfd, h, r_symndx))
+ relative_reloc = true;
+
+ value = aarch64_calculate_got_entry_vma (h, globals, info, value,
+ output_bfd,
+ unresolved_reloc_p);
+ /* Record the GOT entry address which will be used when generating
+ RELATIVE relocation. */
+ if (relative_reloc)
+ got_entry_addr = value;
+
+ if (aarch64_relocation_aginst_gp_p (bfd_r_type))
+ addend = (globals->root.sgot->output_section->vma
+ + globals->root.sgot->output_offset);
+ value = _bfd_aarch64_elf_resolve_relocation (input_bfd, bfd_r_type,
+ place, value,
+ addend, weak_undef_p);
+ }
+ else
+ {
+ bfd_vma addend = 0;
+ struct elf_aarch64_local_symbol *locals
+ = elf_aarch64_locals (input_bfd);
+
+ if (locals == NULL)
+ {
+ int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START;
+ _bfd_error_handler
+ /* xgettext:c-format */
+ (_("%pB: local symbol descriptor table be NULL when applying "
+ "relocation %s against local symbol"),
+ input_bfd, elfNN_aarch64_howto_table[howto_index].name);
+ abort ();
+ }
+
+ off = symbol_got_offset (input_bfd, h, r_symndx);
+ base_got = globals->root.sgot;
+ got_entry_addr = (base_got->output_section->vma
+ + base_got->output_offset + off);
+
+ if (!symbol_got_offset_mark_p (input_bfd, h, r_symndx))
+ {
+ bfd_put_64 (output_bfd, value, base_got->contents + off);
+
+ /* For local symbol, we have done absolute relocation in static
+ linking stage. While for shared library, we need to update the
+ content of GOT entry according to the shared object's runtime
+ base address. So, we need to generate a R_AARCH64_RELATIVE reloc
+ for dynamic linker. */
+ if (bfd_link_pic (info))
+ relative_reloc = true;
+
+ symbol_got_offset_mark (input_bfd, h, r_symndx);
+ }
+
+ /* Update the relocation value to GOT entry addr as we have transformed
+ the direct data access into indirect data access through GOT. */
+ value = got_entry_addr;
+
+ if (aarch64_relocation_aginst_gp_p (bfd_r_type))
+ addend = base_got->output_section->vma + base_got->output_offset;
+
+ value = _bfd_aarch64_elf_resolve_relocation (input_bfd, bfd_r_type,
+ place, value,
+ addend, weak_undef_p);
+ }
+
+ if (relative_reloc)
+ {
+ asection *s;
+ Elf_Internal_Rela outrel;
+
+ s = globals->root.srelgot;
+ if (s == NULL)
+ abort ();
+
+ outrel.r_offset = got_entry_addr;
+ outrel.r_info = ELFNN_R_INFO (0, AARCH64_R (RELATIVE));
+ outrel.r_addend = orig_value;
+ elf_append_rela (output_bfd, s, &outrel);
+ }
+ break;
+
+ case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC:
+ case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21:
+ case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21:
+ case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21:
+ case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC:
+ case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC:
+ case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19:
+ case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC:
+ case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21:
+ case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21:
+ if (globals->root.sgot == NULL)
+ return bfd_reloc_notsupported;
+
+ value = (symbol_got_offset (input_bfd, h, r_symndx)
+ + globals->root.sgot->output_section->vma
+ + globals->root.sgot->output_offset);
+
+ value = _bfd_aarch64_elf_resolve_relocation (input_bfd, bfd_r_type,
+ place, value,
+ 0, weak_undef_p);
+ *unresolved_reloc_p = false;
+ break;
+
+ case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC:
+ case BFD_RELOC_AARCH64_TLSGD_MOVW_G1:
+ case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC:
+ case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1:
+ if (globals->root.sgot == NULL)
+ return bfd_reloc_notsupported;
+
+ value = symbol_got_offset (input_bfd, h, r_symndx);
+ value = _bfd_aarch64_elf_resolve_relocation (input_bfd, bfd_r_type,
+ place, value,
+ 0, weak_undef_p);
+ *unresolved_reloc_p = false;
+ break;
+
+ case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_HI12:
+ case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12:
+ case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12_NC:
+ case BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12:
+ case BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12_NC:
+ case BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12:
+ case BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12_NC:
+ case BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12:
+ case BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12_NC:
+ case BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12:
+ case BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12_NC:
+ case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0:
+ case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0_NC:
+ case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1:
+ case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1_NC:
+ case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G2:
+ {
+ if (!(weak_undef_p || elf_hash_table (info)->tls_sec))
+ {
+ int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START;
+ _bfd_error_handler
+ /* xgettext:c-format */
+ (_("%pB: TLS relocation %s against undefined symbol `%s'"),
+ input_bfd, elfNN_aarch64_howto_table[howto_index].name,
+ h->root.root.string);
+ bfd_set_error (bfd_error_bad_value);
+ return bfd_reloc_notsupported;
+ }
+
+ bfd_vma def_value
+ = weak_undef_p ? 0 : signed_addend - dtpoff_base (info);
+ value = _bfd_aarch64_elf_resolve_relocation (input_bfd, bfd_r_type,
+ place, value,
+ def_value, weak_undef_p);
+ break;
+ }
+
+ case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12:
+ case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12:
+ case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12_NC:
+ case BFD_RELOC_AARCH64_TLSLE_LDST16_TPREL_LO12:
+ case BFD_RELOC_AARCH64_TLSLE_LDST16_TPREL_LO12_NC:
+ case BFD_RELOC_AARCH64_TLSLE_LDST32_TPREL_LO12:
+ case BFD_RELOC_AARCH64_TLSLE_LDST32_TPREL_LO12_NC:
+ case BFD_RELOC_AARCH64_TLSLE_LDST64_TPREL_LO12:
+ case BFD_RELOC_AARCH64_TLSLE_LDST64_TPREL_LO12_NC:
+ case BFD_RELOC_AARCH64_TLSLE_LDST8_TPREL_LO12:
+ case BFD_RELOC_AARCH64_TLSLE_LDST8_TPREL_LO12_NC:
+ case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0:
+ case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC:
+ case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1:
+ case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC:
+ case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2:
+ {
+ if (!(weak_undef_p || elf_hash_table (info)->tls_sec))
+ {
+ int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START;
+ _bfd_error_handler
+ /* xgettext:c-format */
+ (_("%pB: TLS relocation %s against undefined symbol `%s'"),
+ input_bfd, elfNN_aarch64_howto_table[howto_index].name,
+ h->root.root.string);
+ bfd_set_error (bfd_error_bad_value);
+ return bfd_reloc_notsupported;
+ }
+
+ bfd_vma def_value
+ = weak_undef_p ? 0 : signed_addend - tpoff_base (info);
+ value = _bfd_aarch64_elf_resolve_relocation (input_bfd, bfd_r_type,
+ place, value,
+ def_value, weak_undef_p);
+ *unresolved_reloc_p = false;
+ break;
+ }
+
+ case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12:
+ case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21:
+ case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21:
+ case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC:
+ case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12:
+ case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19:
+ if (globals->root.sgot == NULL)
+ return bfd_reloc_notsupported;
+ value = (symbol_tlsdesc_got_offset (input_bfd, h, r_symndx)
+ + globals->root.sgotplt->output_section->vma
+ + globals->root.sgotplt->output_offset
+ + globals->sgotplt_jump_table_size);
+
+ value = _bfd_aarch64_elf_resolve_relocation (input_bfd, bfd_r_type,
+ place, value,
+ 0, weak_undef_p);
+ *unresolved_reloc_p = false;
+ break;
+
+ case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC:
+ case BFD_RELOC_AARCH64_TLSDESC_OFF_G1:
+ if (globals->root.sgot == NULL)
+ return bfd_reloc_notsupported;
+
+ value = (symbol_tlsdesc_got_offset (input_bfd, h, r_symndx)
+ + globals->root.sgotplt->output_section->vma
+ + globals->root.sgotplt->output_offset
+ + globals->sgotplt_jump_table_size);
+
+ value -= (globals->root.sgot->output_section->vma
+ + globals->root.sgot->output_offset);
+
+ value = _bfd_aarch64_elf_resolve_relocation (input_bfd, bfd_r_type,
+ place, value,
+ 0, weak_undef_p);
+ *unresolved_reloc_p = false;
+ break;
+
+ default:
+ return bfd_reloc_notsupported;
+ }
+
+ if (saved_addend)
+ *saved_addend = value;
+
+ /* Only apply the final relocation in a sequence. */
+ if (save_addend)
+ return bfd_reloc_continue;
+
+ return _bfd_aarch64_elf_put_addend (input_bfd, hit_data, bfd_r_type,
+ howto, value);
+}
+
+/* LP64 and ILP32 operates on x- and w-registers respectively.
+ Next definitions take into account the difference between
+ corresponding machine codes. R means x-register if the target
+ arch is LP64, and w-register if the target is ILP32. */
+
+#if ARCH_SIZE == 64
+# define add_R0_R0 (0x91000000)
+# define add_R0_R0_R1 (0x8b000020)
+# define add_R0_R1 (0x91400020)
+# define ldr_R0 (0x58000000)
+# define ldr_R0_mask(i) (i & 0xffffffe0)
+# define ldr_R0_x0 (0xf9400000)
+# define ldr_hw_R0 (0xf2a00000)
+# define movk_R0 (0xf2800000)
+# define movz_R0 (0xd2a00000)
+# define movz_hw_R0 (0xd2c00000)
+#else /*ARCH_SIZE == 32 */
+# define add_R0_R0 (0x11000000)
+# define add_R0_R0_R1 (0x0b000020)
+# define add_R0_R1 (0x11400020)
+# define ldr_R0 (0x18000000)
+# define ldr_R0_mask(i) (i & 0xbfffffe0)
+# define ldr_R0_x0 (0xb9400000)
+# define ldr_hw_R0 (0x72a00000)
+# define movk_R0 (0x72800000)
+# define movz_R0 (0x52a00000)
+# define movz_hw_R0 (0x52c00000)
+#endif
+
+/* Structure to hold payload for _bfd_aarch64_erratum_843419_clear_stub,
+ it is used to identify the stub information to reset. */
+
+struct erratum_843419_branch_to_stub_clear_data
+{
+ bfd_vma adrp_offset;
+ asection *output_section;
+};
+
+/* Clear the erratum information for GEN_ENTRY if the ADRP_OFFSET and
+ section inside IN_ARG matches. The clearing is done by setting the
+ stub_type to none. */
+
+static bool
+_bfd_aarch64_erratum_843419_clear_stub (struct bfd_hash_entry *gen_entry,
+ void *in_arg)
+{
+ struct elf_aarch64_stub_hash_entry *stub_entry
+ = (struct elf_aarch64_stub_hash_entry *) gen_entry;
+ struct erratum_843419_branch_to_stub_clear_data *data
+ = (struct erratum_843419_branch_to_stub_clear_data *) in_arg;
+
+ if (stub_entry->target_section != data->output_section
+ || stub_entry->stub_type != aarch64_stub_erratum_843419_veneer
+ || stub_entry->adrp_offset != data->adrp_offset)
+ return true;
+
+ /* Change the stub type instead of removing the entry, removing from the hash
+ table would be slower and we have already reserved the memory for the entry
+ so there wouldn't be much gain. Changing the stub also keeps around a
+ record of what was there before. */
+ stub_entry->stub_type = aarch64_stub_none;
+
+ /* We're done and there could have been only one matching stub at that
+ particular offset, so abort further traversal. */
+ return false;
+}
+
+/* TLS Relaxations may relax an adrp sequence that matches the erratum 843419
+ sequence. In this case the erratum no longer applies and we need to remove
+ the entry from the pending stub generation. This clears matching adrp insn
+ at ADRP_OFFSET in INPUT_SECTION in the stub table defined in GLOBALS. */
+
+static void
+clear_erratum_843419_entry (struct elf_aarch64_link_hash_table *globals,
+ bfd_vma adrp_offset, asection *input_section)
+{
+ if (globals->fix_erratum_843419 & ERRAT_ADRP)
+ {
+ struct erratum_843419_branch_to_stub_clear_data data;
+ data.adrp_offset = adrp_offset;
+ data.output_section = input_section;
+
+ bfd_hash_traverse (&globals->stub_hash_table,
+ _bfd_aarch64_erratum_843419_clear_stub, &data);
+ }
+}
+
+/* Handle TLS relaxations. Relaxing is possible for symbols that use
+ R_AARCH64_TLSDESC_ADR_{PAGE, LD64_LO12_NC, ADD_LO12_NC} during a static
+ link.
+
+ Return bfd_reloc_ok if we're done, bfd_reloc_continue if the caller
+ is to then call final_link_relocate. Return other values in the
+ case of error. */
+
+static bfd_reloc_status_type
+elfNN_aarch64_tls_relax (struct elf_aarch64_link_hash_table *globals,
+ bfd *input_bfd, asection *input_section,
+ bfd_byte *contents, Elf_Internal_Rela *rel,
+ struct elf_link_hash_entry *h,
+ struct bfd_link_info *info)
+{
+ bool local_exec = bfd_link_executable (info)
+ && SYMBOL_REFERENCES_LOCAL (info, h);
+ unsigned int r_type = ELFNN_R_TYPE (rel->r_info);
+ unsigned long insn;
+
+ BFD_ASSERT (globals && input_bfd && contents && rel);
+
+ switch (elfNN_aarch64_bfd_reloc_from_type (input_bfd, r_type))
+ {
+ case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21:
+ case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21:
+ if (local_exec)
+ {
+ /* GD->LE relaxation:
+ adrp x0, :tlsgd:var => movz R0, :tprel_g1:var
+ or
+ adrp x0, :tlsdesc:var => movz R0, :tprel_g1:var
+
+ Where R is x for LP64, and w for ILP32. */
+ bfd_putl32 (movz_R0, contents + rel->r_offset);
+ /* We have relaxed the adrp into a mov, we may have to clear any
+ pending erratum fixes. */
+ clear_erratum_843419_entry (globals, rel->r_offset, input_section);
+ return bfd_reloc_continue;
+ }
+ else
+ {
+ /* GD->IE relaxation:
+ adrp x0, :tlsgd:var => adrp x0, :gottprel:var
+ or
+ adrp x0, :tlsdesc:var => adrp x0, :gottprel:var
+ */
+ return bfd_reloc_continue;
+ }
+
+ case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21:
+ BFD_ASSERT (0);
+ break;
+
+ case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19:
+ if (local_exec)
+ {
+ /* Tiny TLSDESC->LE relaxation:
+ ldr x1, :tlsdesc:var => movz R0, #:tprel_g1:var
+ adr x0, :tlsdesc:var => movk R0, #:tprel_g0_nc:var
+ .tlsdesccall var
+ blr x1 => nop
+
+ Where R is x for LP64, and w for ILP32. */
+ BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (TLSDESC_ADR_PREL21));
+ BFD_ASSERT (ELFNN_R_TYPE (rel[2].r_info) == AARCH64_R (TLSDESC_CALL));
+
+ rel[1].r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info),
+ AARCH64_R (TLSLE_MOVW_TPREL_G0_NC));
+ rel[2].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
+
+ bfd_putl32 (movz_R0, contents + rel->r_offset);
+ bfd_putl32 (movk_R0, contents + rel->r_offset + 4);
+ bfd_putl32 (INSN_NOP, contents + rel->r_offset + 8);
+ return bfd_reloc_continue;
+ }
+ else
+ {
+ /* Tiny TLSDESC->IE relaxation:
+ ldr x1, :tlsdesc:var => ldr x0, :gottprel:var
+ adr x0, :tlsdesc:var => nop
+ .tlsdesccall var
+ blr x1 => nop
+ */
+ BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (TLSDESC_ADR_PREL21));
+ BFD_ASSERT (ELFNN_R_TYPE (rel[2].r_info) == AARCH64_R (TLSDESC_CALL));
+
+ rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
+ rel[2].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
+
+ bfd_putl32 (ldr_R0, contents + rel->r_offset);
+ bfd_putl32 (INSN_NOP, contents + rel->r_offset + 4);
+ bfd_putl32 (INSN_NOP, contents + rel->r_offset + 8);
+ return bfd_reloc_continue;
+ }
+
+ case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21:
+ if (local_exec)
+ {
+ /* Tiny GD->LE relaxation:
+ adr x0, :tlsgd:var => mrs x1, tpidr_el0
+ bl __tls_get_addr => add R0, R1, #:tprel_hi12:x, lsl #12
+ nop => add R0, R0, #:tprel_lo12_nc:x
+
+ Where R is x for LP64, and x for Ilp32. */
+
+ /* First kill the tls_get_addr reloc on the bl instruction. */
+ BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset);
+
+ bfd_putl32 (0xd53bd041, contents + rel->r_offset + 0);
+ bfd_putl32 (add_R0_R1, contents + rel->r_offset + 4);
+ bfd_putl32 (add_R0_R0, contents + rel->r_offset + 8);
+
+ rel[1].r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info),
+ AARCH64_R (TLSLE_ADD_TPREL_LO12_NC));
+ rel[1].r_offset = rel->r_offset + 8;
+
+ /* Move the current relocation to the second instruction in
+ the sequence. */
+ rel->r_offset += 4;
+ rel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info),
+ AARCH64_R (TLSLE_ADD_TPREL_HI12));
+ return bfd_reloc_continue;
+ }
+ else
+ {
+ /* Tiny GD->IE relaxation:
+ adr x0, :tlsgd:var => ldr R0, :gottprel:var
+ bl __tls_get_addr => mrs x1, tpidr_el0
+ nop => add R0, R0, R1
+
+ Where R is x for LP64, and w for Ilp32. */
+
+ /* First kill the tls_get_addr reloc on the bl instruction. */
+ BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset);
+ rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
+
+ bfd_putl32 (ldr_R0, contents + rel->r_offset);
+ bfd_putl32 (0xd53bd041, contents + rel->r_offset + 4);
+ bfd_putl32 (add_R0_R0_R1, contents + rel->r_offset + 8);
+ return bfd_reloc_continue;
+ }
+
+#if ARCH_SIZE == 64
+ case BFD_RELOC_AARCH64_TLSGD_MOVW_G1:
+ BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (TLSGD_MOVW_G0_NC));
+ BFD_ASSERT (rel->r_offset + 12 == rel[2].r_offset);
+ BFD_ASSERT (ELFNN_R_TYPE (rel[2].r_info) == AARCH64_R (CALL26));
+
+ if (local_exec)
+ {
+ /* Large GD->LE relaxation:
+ movz x0, #:tlsgd_g1:var => movz x0, #:tprel_g2:var, lsl #32
+ movk x0, #:tlsgd_g0_nc:var => movk x0, #:tprel_g1_nc:var, lsl #16
+ add x0, gp, x0 => movk x0, #:tprel_g0_nc:var
+ bl __tls_get_addr => mrs x1, tpidr_el0
+ nop => add x0, x0, x1
+ */
+ rel[2].r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info),
+ AARCH64_R (TLSLE_MOVW_TPREL_G0_NC));
+ rel[2].r_offset = rel->r_offset + 8;
+
+ bfd_putl32 (movz_hw_R0, contents + rel->r_offset + 0);
+ bfd_putl32 (ldr_hw_R0, contents + rel->r_offset + 4);
+ bfd_putl32 (movk_R0, contents + rel->r_offset + 8);
+ bfd_putl32 (0xd53bd041, contents + rel->r_offset + 12);
+ bfd_putl32 (add_R0_R0_R1, contents + rel->r_offset + 16);
+ }
+ else
+ {
+ /* Large GD->IE relaxation:
+ movz x0, #:tlsgd_g1:var => movz x0, #:gottprel_g1:var, lsl #16
+ movk x0, #:tlsgd_g0_nc:var => movk x0, #:gottprel_g0_nc:var
+ add x0, gp, x0 => ldr x0, [gp, x0]
+ bl __tls_get_addr => mrs x1, tpidr_el0
+ nop => add x0, x0, x1
+ */
+ rel[2].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
+ bfd_putl32 (0xd2a80000, contents + rel->r_offset + 0);
+ bfd_putl32 (ldr_R0, contents + rel->r_offset + 8);
+ bfd_putl32 (0xd53bd041, contents + rel->r_offset + 12);
+ bfd_putl32 (add_R0_R0_R1, contents + rel->r_offset + 16);
+ }
+ return bfd_reloc_continue;
+
+ case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC:
+ return bfd_reloc_continue;
+#endif
+
+ case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19:
+ return bfd_reloc_continue;
+
+ case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC:
+ if (local_exec)
+ {
+ /* GD->LE relaxation:
+ ldr xd, [x0, #:tlsdesc_lo12:var] => movk x0, :tprel_g0_nc:var
+
+ Where R is x for lp64 mode, and w for ILP32 mode. */
+ bfd_putl32 (movk_R0, contents + rel->r_offset);
+ return bfd_reloc_continue;
+ }
+ else
+ {
+ /* GD->IE relaxation:
+ ldr xd, [x0, #:tlsdesc_lo12:var] => ldr R0, [x0, #:gottprel_lo12:var]
+
+ Where R is x for lp64 mode, and w for ILP32 mode. */
+ insn = bfd_getl32 (contents + rel->r_offset);
+ bfd_putl32 (ldr_R0_mask (insn), contents + rel->r_offset);
+ return bfd_reloc_continue;
+ }
+
+ case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC:
+ if (local_exec)
+ {
+ /* GD->LE relaxation
+ add x0, #:tlsgd_lo12:var => movk R0, :tprel_g0_nc:var
+ bl __tls_get_addr => mrs x1, tpidr_el0
+ nop => add R0, R1, R0
+
+ Where R is x for lp64 mode, and w for ILP32 mode. */
+
+ /* First kill the tls_get_addr reloc on the bl instruction. */
+ BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset);
+ rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
+
+ bfd_putl32 (movk_R0, contents + rel->r_offset);
+ bfd_putl32 (0xd53bd041, contents + rel->r_offset + 4);
+ bfd_putl32 (add_R0_R0_R1, contents + rel->r_offset + 8);
+ return bfd_reloc_continue;
+ }
+ else
+ {
+ /* GD->IE relaxation
+ ADD x0, #:tlsgd_lo12:var => ldr R0, [x0, #:gottprel_lo12:var]
+ BL __tls_get_addr => mrs x1, tpidr_el0
+ R_AARCH64_CALL26
+ NOP => add R0, R1, R0
+
+ Where R is x for lp64 mode, and w for ilp32 mode. */
+
+ BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (CALL26));
+
+ /* Remove the relocation on the BL instruction. */
+ rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
+
+ /* We choose to fixup the BL and NOP instructions using the
+ offset from the second relocation to allow flexibility in
+ scheduling instructions between the ADD and BL. */
+ bfd_putl32 (ldr_R0_x0, contents + rel->r_offset);
+ bfd_putl32 (0xd53bd041, contents + rel[1].r_offset);
+ bfd_putl32 (add_R0_R0_R1, contents + rel[1].r_offset + 4);
+ return bfd_reloc_continue;
+ }
+
+ case BFD_RELOC_AARCH64_TLSDESC_ADD:
+ case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12:
+ case BFD_RELOC_AARCH64_TLSDESC_CALL:
+ /* GD->IE/LE relaxation:
+ add x0, x0, #:tlsdesc_lo12:var => nop
+ blr xd => nop
+ */
+ bfd_putl32 (INSN_NOP, contents + rel->r_offset);
+ return bfd_reloc_ok;
+
+ case BFD_RELOC_AARCH64_TLSDESC_LDR:
+ if (local_exec)
+ {
+ /* GD->LE relaxation:
+ ldr xd, [gp, xn] => movk R0, #:tprel_g0_nc:var
+
+ Where R is x for lp64 mode, and w for ILP32 mode. */
+ bfd_putl32 (movk_R0, contents + rel->r_offset);
+ return bfd_reloc_continue;
+ }
+ else
+ {
+ /* GD->IE relaxation:
+ ldr xd, [gp, xn] => ldr R0, [gp, xn]
+
+ Where R is x for lp64 mode, and w for ILP32 mode. */
+ insn = bfd_getl32 (contents + rel->r_offset);
+ bfd_putl32 (ldr_R0_mask (insn), contents + rel->r_offset);
+ return bfd_reloc_ok;
+ }
+
+ case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC:
+ /* GD->LE relaxation:
+ movk xd, #:tlsdesc_off_g0_nc:var => movk R0, #:tprel_g1_nc:var, lsl #16
+ GD->IE relaxation:
+ movk xd, #:tlsdesc_off_g0_nc:var => movk Rd, #:gottprel_g0_nc:var
+
+ Where R is x for lp64 mode, and w for ILP32 mode. */
+ if (local_exec)
+ bfd_putl32 (ldr_hw_R0, contents + rel->r_offset);
+ return bfd_reloc_continue;
+
+ case BFD_RELOC_AARCH64_TLSDESC_OFF_G1:
+ if (local_exec)
+ {
+ /* GD->LE relaxation:
+ movz xd, #:tlsdesc_off_g1:var => movz R0, #:tprel_g2:var, lsl #32
+
+ Where R is x for lp64 mode, and w for ILP32 mode. */
+ bfd_putl32 (movz_hw_R0, contents + rel->r_offset);
+ return bfd_reloc_continue;
+ }
+ else
+ {
+ /* GD->IE relaxation:
+ movz xd, #:tlsdesc_off_g1:var => movz Rd, #:gottprel_g1:var, lsl #16
+
+ Where R is x for lp64 mode, and w for ILP32 mode. */
+ insn = bfd_getl32 (contents + rel->r_offset);
+ bfd_putl32 (movz_R0 | (insn & 0x1f), contents + rel->r_offset);
+ return bfd_reloc_continue;
+ }
+
+ case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21:
+ /* IE->LE relaxation:
+ adrp xd, :gottprel:var => movz Rd, :tprel_g1:var
+
+ Where R is x for lp64 mode, and w for ILP32 mode. */
+ if (local_exec)
+ {
+ insn = bfd_getl32 (contents + rel->r_offset);
+ bfd_putl32 (movz_R0 | (insn & 0x1f), contents + rel->r_offset);
+ /* We have relaxed the adrp into a mov, we may have to clear any
+ pending erratum fixes. */
+ clear_erratum_843419_entry (globals, rel->r_offset, input_section);
+ }
+ return bfd_reloc_continue;
+
+ case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC:
+ /* IE->LE relaxation:
+ ldr xd, [xm, #:gottprel_lo12:var] => movk Rd, :tprel_g0_nc:var
+
+ Where R is x for lp64 mode, and w for ILP32 mode. */
+ if (local_exec)
+ {
+ insn = bfd_getl32 (contents + rel->r_offset);
+ bfd_putl32 (movk_R0 | (insn & 0x1f), contents + rel->r_offset);
+ }
+ return bfd_reloc_continue;
+
+ case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21:
+ /* LD->LE relaxation (tiny):
+ adr x0, :tlsldm:x => mrs x0, tpidr_el0
+ bl __tls_get_addr => add R0, R0, TCB_SIZE
+
+ Where R is x for lp64 mode, and w for ilp32 mode. */
+ if (local_exec)
+ {
+ BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset);
+ BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (CALL26));
+ /* No need of CALL26 relocation for tls_get_addr. */
+ rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
+ bfd_putl32 (0xd53bd040, contents + rel->r_offset + 0);
+ bfd_putl32 (add_R0_R0 | (TCB_SIZE << 10),
+ contents + rel->r_offset + 4);
+ return bfd_reloc_ok;
+ }
+ return bfd_reloc_continue;
+
+ case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21:
+ /* LD->LE relaxation (small):
+ adrp x0, :tlsldm:x => mrs x0, tpidr_el0
+ */
+ if (local_exec)
+ {
+ bfd_putl32 (0xd53bd040, contents + rel->r_offset);
+ return bfd_reloc_ok;
+ }
+ return bfd_reloc_continue;
+
+ case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC:
+ /* LD->LE relaxation (small):
+ add x0, #:tlsldm_lo12:x => add R0, R0, TCB_SIZE
+ bl __tls_get_addr => nop
+
+ Where R is x for lp64 mode, and w for ilp32 mode. */
+ if (local_exec)
+ {
+ BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset);
+ BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (CALL26));
+ /* No need of CALL26 relocation for tls_get_addr. */
+ rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
+ bfd_putl32 (add_R0_R0 | (TCB_SIZE << 10),
+ contents + rel->r_offset + 0);
+ bfd_putl32 (INSN_NOP, contents + rel->r_offset + 4);
+ return bfd_reloc_ok;
+ }
+ return bfd_reloc_continue;
+
+ default:
+ return bfd_reloc_continue;
+ }
+
+ return bfd_reloc_ok;
+}
+
+/* Relocate an AArch64 ELF section. */
+
+static int
+elfNN_aarch64_relocate_section (bfd *output_bfd,
+ struct bfd_link_info *info,
+ bfd *input_bfd,
+ asection *input_section,
+ bfd_byte *contents,
+ Elf_Internal_Rela *relocs,
+ Elf_Internal_Sym *local_syms,
+ asection **local_sections)
+{
+ Elf_Internal_Shdr *symtab_hdr;
+ struct elf_link_hash_entry **sym_hashes;
+ Elf_Internal_Rela *rel;
+ Elf_Internal_Rela *relend;
+ const char *name;
+ struct elf_aarch64_link_hash_table *globals;
+ bool save_addend = false;
+ bfd_vma addend = 0;
+
+ globals = elf_aarch64_hash_table (info);
+
+ symtab_hdr = &elf_symtab_hdr (input_bfd);
+ sym_hashes = elf_sym_hashes (input_bfd);
+
+ rel = relocs;
+ relend = relocs + input_section->reloc_count;
+ for (; rel < relend; rel++)
+ {
+ unsigned int r_type;
+ bfd_reloc_code_real_type bfd_r_type;
+ bfd_reloc_code_real_type relaxed_bfd_r_type;
+ reloc_howto_type *howto;
+ unsigned long r_symndx;
+ Elf_Internal_Sym *sym;
+ asection *sec;
+ struct elf_link_hash_entry *h;
+ bfd_vma relocation;
+ bfd_reloc_status_type r;
+ arelent bfd_reloc;
+ char sym_type;
+ bool unresolved_reloc = false;
+ char *error_message = NULL;
+
+ r_symndx = ELFNN_R_SYM (rel->r_info);
+ r_type = ELFNN_R_TYPE (rel->r_info);
+
+ bfd_reloc.howto = elfNN_aarch64_howto_from_type (input_bfd, r_type);
+ howto = bfd_reloc.howto;
+
+ if (howto == NULL)
+ return _bfd_unrecognized_reloc (input_bfd, input_section, r_type);
+
+ bfd_r_type = elfNN_aarch64_bfd_reloc_from_howto (howto);
+
+ h = NULL;
+ sym = NULL;
+ sec = NULL;
+
+ if (r_symndx < symtab_hdr->sh_info)
+ {
+ sym = local_syms + r_symndx;
+ sym_type = ELFNN_ST_TYPE (sym->st_info);
+ sec = local_sections[r_symndx];
+
+ /* An object file might have a reference to a local
+ undefined symbol. This is a daft object file, but we
+ should at least do something about it. */
+ if (r_type != R_AARCH64_NONE && r_type != R_AARCH64_NULL
+ && bfd_is_und_section (sec)
+ && ELF_ST_BIND (sym->st_info) != STB_WEAK)
+ (*info->callbacks->undefined_symbol)
+ (info, bfd_elf_string_from_elf_section
+ (input_bfd, symtab_hdr->sh_link, sym->st_name),
+ input_bfd, input_section, rel->r_offset, true);
+
+ relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
+
+ /* Relocate against local STT_GNU_IFUNC symbol. */
+ if (!bfd_link_relocatable (info)
+ && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
+ {
+ h = elfNN_aarch64_get_local_sym_hash (globals, input_bfd,
+ rel, false);
+ if (h == NULL)
+ abort ();
+
+ /* Set STT_GNU_IFUNC symbol value. */
+ h->root.u.def.value = sym->st_value;
+ h->root.u.def.section = sec;
+ }
+ }
+ else
+ {
+ bool warned, ignored;
+
+ RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
+ r_symndx, symtab_hdr, sym_hashes,
+ h, sec, relocation,
+ unresolved_reloc, warned, ignored);
+
+ sym_type = h->type;
+ }
+
+ if (sec != NULL && discarded_section (sec))
+ RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
+ rel, 1, relend, howto, 0, contents);
+
+ if (bfd_link_relocatable (info))
+ continue;
+
+ if (h != NULL)
+ name = h->root.root.string;
+ else
+ {
+ name = (bfd_elf_string_from_elf_section
+ (input_bfd, symtab_hdr->sh_link, sym->st_name));
+ if (name == NULL || *name == '\0')
+ name = bfd_section_name (sec);
+ }
+
+ if (r_symndx != 0
+ && r_type != R_AARCH64_NONE
+ && r_type != R_AARCH64_NULL
+ && (h == NULL
+ || h->root.type == bfd_link_hash_defined
+ || h->root.type == bfd_link_hash_defweak)
+ && IS_AARCH64_TLS_RELOC (bfd_r_type) != (sym_type == STT_TLS))
+ {
+ _bfd_error_handler
+ ((sym_type == STT_TLS
+ /* xgettext:c-format */
+ ? _("%pB(%pA+%#" PRIx64 "): %s used with TLS symbol %s")
+ /* xgettext:c-format */
+ : _("%pB(%pA+%#" PRIx64 "): %s used with non-TLS symbol %s")),
+ input_bfd,
+ input_section, (uint64_t) rel->r_offset, howto->name, name);
+ }
+
+ /* We relax only if we can see that there can be a valid transition
+ from a reloc type to another.
+ We call elfNN_aarch64_final_link_relocate unless we're completely
+ done, i.e., the relaxation produced the final output we want. */
+
+ relaxed_bfd_r_type = aarch64_tls_transition (input_bfd, info, r_type,
+ h, r_symndx);
+ if (relaxed_bfd_r_type != bfd_r_type)
+ {
+ bfd_r_type = relaxed_bfd_r_type;
+ howto = elfNN_aarch64_howto_from_bfd_reloc (bfd_r_type);
+ BFD_ASSERT (howto != NULL);
+ r_type = howto->type;
+ r = elfNN_aarch64_tls_relax (globals, input_bfd, input_section,
+ contents, rel, h, info);
+ unresolved_reloc = 0;
+ }
+ else
+ r = bfd_reloc_continue;
+
+ /* There may be multiple consecutive relocations for the
+ same offset. In that case we are supposed to treat the
+ output of each relocation as the addend for the next. */
+ if (rel + 1 < relend
+ && rel->r_offset == rel[1].r_offset
+ && ELFNN_R_TYPE (rel[1].r_info) != R_AARCH64_NONE
+ && ELFNN_R_TYPE (rel[1].r_info) != R_AARCH64_NULL)
+ save_addend = true;
+ else
+ save_addend = false;
+
+ if (r == bfd_reloc_continue)
+ r = elfNN_aarch64_final_link_relocate (howto, input_bfd, output_bfd,
+ input_section, contents, rel,
+ relocation, info, sec,
+ h, &unresolved_reloc,
+ save_addend, &addend, sym);
+
+ switch (elfNN_aarch64_bfd_reloc_from_type (input_bfd, r_type))
+ {
+ case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC:
+ case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21:
+ case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21:
+ case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC:
+ case BFD_RELOC_AARCH64_TLSGD_MOVW_G1:
+ case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC:
+ case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21:
+ case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21:
+ if (! symbol_got_offset_mark_p (input_bfd, h, r_symndx))
+ {
+ bool need_relocs = false;
+ bfd_byte *loc;
+ int indx;
+ bfd_vma off;
+
+ off = symbol_got_offset (input_bfd, h, r_symndx);
+ indx = h && h->dynindx != -1 ? h->dynindx : 0;
+
+ need_relocs =
+ (!bfd_link_executable (info) || indx != 0) &&
+ (h == NULL
+ || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
+ || h->root.type != bfd_link_hash_undefweak);
+
+ BFD_ASSERT (globals->root.srelgot != NULL);
+
+ if (need_relocs)
+ {
+ Elf_Internal_Rela rela;
+ rela.r_info = ELFNN_R_INFO (indx, AARCH64_R (TLS_DTPMOD));
+ rela.r_addend = 0;
+ rela.r_offset = globals->root.sgot->output_section->vma +
+ globals->root.sgot->output_offset + off;
+
+
+ loc = globals->root.srelgot->contents;
+ loc += globals->root.srelgot->reloc_count++
+ * RELOC_SIZE (htab);
+ bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc);
+
+ bfd_reloc_code_real_type real_type =
+ elfNN_aarch64_bfd_reloc_from_type (input_bfd, r_type);
+
+ if (real_type == BFD_RELOC_AARCH64_TLSLD_ADR_PREL21
+ || real_type == BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21
+ || real_type == BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC)
+ {
+ /* For local dynamic, don't generate DTPREL in any case.
+ Initialize the DTPREL slot into zero, so we get module
+ base address when invoke runtime TLS resolver. */
+ bfd_put_NN (output_bfd, 0,
+ globals->root.sgot->contents + off
+ + GOT_ENTRY_SIZE);
+ }
+ else if (indx == 0)
+ {
+ bfd_put_NN (output_bfd,
+ relocation - dtpoff_base (info),
+ globals->root.sgot->contents + off
+ + GOT_ENTRY_SIZE);
+ }
+ else
+ {
+ /* This TLS symbol is global. We emit a
+ relocation to fixup the tls offset at load
+ time. */
+ rela.r_info =
+ ELFNN_R_INFO (indx, AARCH64_R (TLS_DTPREL));
+ rela.r_addend = 0;
+ rela.r_offset =
+ (globals->root.sgot->output_section->vma
+ + globals->root.sgot->output_offset + off
+ + GOT_ENTRY_SIZE);
+
+ loc = globals->root.srelgot->contents;
+ loc += globals->root.srelgot->reloc_count++
+ * RELOC_SIZE (globals);
+ bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc);
+ bfd_put_NN (output_bfd, (bfd_vma) 0,
+ globals->root.sgot->contents + off
+ + GOT_ENTRY_SIZE);
+ }
+ }
+ else
+ {
+ bfd_put_NN (output_bfd, (bfd_vma) 1,
+ globals->root.sgot->contents + off);
+ bfd_put_NN (output_bfd,
+ relocation - dtpoff_base (info),
+ globals->root.sgot->contents + off
+ + GOT_ENTRY_SIZE);
+ }
+
+ symbol_got_offset_mark (input_bfd, h, r_symndx);
+ }
+ break;
+
+ case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21:
+ case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC:
+ case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19:
+ case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC:
+ case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1:
+ if (! symbol_got_offset_mark_p (input_bfd, h, r_symndx))
+ {
+ bool need_relocs = false;
+ bfd_byte *loc;
+ int indx;
+ bfd_vma off;
+
+ off = symbol_got_offset (input_bfd, h, r_symndx);
+
+ indx = h && h->dynindx != -1 ? h->dynindx : 0;
+
+ need_relocs =
+ (!bfd_link_executable (info) || indx != 0) &&
+ (h == NULL
+ || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
+ || h->root.type != bfd_link_hash_undefweak);
+
+ BFD_ASSERT (globals->root.srelgot != NULL);
+
+ if (need_relocs)
+ {
+ Elf_Internal_Rela rela;
+
+ if (indx == 0)
+ rela.r_addend = relocation - dtpoff_base (info);
+ else
+ rela.r_addend = 0;
+
+ rela.r_info = ELFNN_R_INFO (indx, AARCH64_R (TLS_TPREL));
+ rela.r_offset = globals->root.sgot->output_section->vma +
+ globals->root.sgot->output_offset + off;
+
+ loc = globals->root.srelgot->contents;
+ loc += globals->root.srelgot->reloc_count++
+ * RELOC_SIZE (htab);
+
+ bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc);
+
+ bfd_put_NN (output_bfd, rela.r_addend,
+ globals->root.sgot->contents + off);
+ }
+ else
+ bfd_put_NN (output_bfd, relocation - tpoff_base (info),
+ globals->root.sgot->contents + off);
+
+ symbol_got_offset_mark (input_bfd, h, r_symndx);
+ }
+ break;
+
+ case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12:
+ case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21:
+ case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21:
+ case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC:
+ case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19:
+ case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC:
+ case BFD_RELOC_AARCH64_TLSDESC_OFF_G1:
+ if (! symbol_tlsdesc_got_offset_mark_p (input_bfd, h, r_symndx))
+ {
+ bool need_relocs = false;
+ int indx = h && h->dynindx != -1 ? h->dynindx : 0;
+ bfd_vma off = symbol_tlsdesc_got_offset (input_bfd, h, r_symndx);
+
+ need_relocs = (h == NULL
+ || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
+ || h->root.type != bfd_link_hash_undefweak);
+
+ BFD_ASSERT (globals->root.srelgot != NULL);
+ BFD_ASSERT (globals->root.sgot != NULL);
+
+ if (need_relocs)
+ {
+ bfd_byte *loc;
+ Elf_Internal_Rela rela;
+ rela.r_info = ELFNN_R_INFO (indx, AARCH64_R (TLSDESC));
+
+ rela.r_addend = 0;
+ rela.r_offset = (globals->root.sgotplt->output_section->vma
+ + globals->root.sgotplt->output_offset
+ + off + globals->sgotplt_jump_table_size);
+
+ if (indx == 0)
+ rela.r_addend = relocation - dtpoff_base (info);
+
+ /* Allocate the next available slot in the PLT reloc
+ section to hold our R_AARCH64_TLSDESC, the next
+ available slot is determined from reloc_count,
+ which we step. But note, reloc_count was
+ artifically moved down while allocating slots for
+ real PLT relocs such that all of the PLT relocs
+ will fit above the initial reloc_count and the
+ extra stuff will fit below. */
+ loc = globals->root.srelplt->contents;
+ loc += globals->root.srelplt->reloc_count++
+ * RELOC_SIZE (globals);
+
+ bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc);
+
+ bfd_put_NN (output_bfd, (bfd_vma) 0,
+ globals->root.sgotplt->contents + off +
+ globals->sgotplt_jump_table_size);
+ bfd_put_NN (output_bfd, (bfd_vma) 0,
+ globals->root.sgotplt->contents + off +
+ globals->sgotplt_jump_table_size +
+ GOT_ENTRY_SIZE);
+ }
+
+ symbol_tlsdesc_got_offset_mark (input_bfd, h, r_symndx);
+ }
+ break;
+ default:
+ break;
+ }
+
+ /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
+ because such sections are not SEC_ALLOC and thus ld.so will
+ not process them. */
+ if (unresolved_reloc
+ && !((input_section->flags & SEC_DEBUGGING) != 0
+ && h->def_dynamic)
+ && _bfd_elf_section_offset (output_bfd, info, input_section,
+ +rel->r_offset) != (bfd_vma) - 1)
+ {
+ _bfd_error_handler
+ /* xgettext:c-format */
+ (_("%pB(%pA+%#" PRIx64 "): "
+ "unresolvable %s relocation against symbol `%s'"),
+ input_bfd, input_section, (uint64_t) rel->r_offset, howto->name,
+ h->root.root.string);
+ return false;
+ }
+
+ if (r != bfd_reloc_ok && r != bfd_reloc_continue)
+ {
+ bfd_reloc_code_real_type real_r_type
+ = elfNN_aarch64_bfd_reloc_from_type (input_bfd, r_type);
+
+ switch (r)
+ {
+ case bfd_reloc_overflow:
+ (*info->callbacks->reloc_overflow)
+ (info, (h ? &h->root : NULL), name, howto->name, (bfd_vma) 0,
+ input_bfd, input_section, rel->r_offset);
+ if (real_r_type == BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15
+ || real_r_type == BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14)
+ {
+ (*info->callbacks->warning)
+ (info,
+ _("too many GOT entries for -fpic, "
+ "please recompile with -fPIC"),
+ name, input_bfd, input_section, rel->r_offset);
+ return false;
+ }
+ /* Overflow can occur when a variable is referenced with a type
+ that has a larger alignment than the type with which it was
+ declared. eg:
+ file1.c: extern int foo; int a (void) { return foo; }
+ file2.c: char bar, foo, baz;
+ If the variable is placed into a data section at an offset
+ that is incompatible with the larger alignment requirement
+ overflow will occur. (Strictly speaking this is not overflow
+ but rather an alignment problem, but the bfd_reloc_ error
+ enum does not have a value to cover that situation).
+
+ Try to catch this situation here and provide a more helpful
+ error message to the user. */
+ if (addend & (((bfd_vma) 1 << howto->rightshift) - 1)
+ /* FIXME: Are we testing all of the appropriate reloc
+ types here ? */
+ && (real_r_type == BFD_RELOC_AARCH64_LD_LO19_PCREL
+ || real_r_type == BFD_RELOC_AARCH64_LDST16_LO12
+ || real_r_type == BFD_RELOC_AARCH64_LDST32_LO12
+ || real_r_type == BFD_RELOC_AARCH64_LDST64_LO12
+ || real_r_type == BFD_RELOC_AARCH64_LDST128_LO12))
+ {
+ info->callbacks->warning
+ (info, _("one possible cause of this error is that the \
+symbol is being referenced in the indicated code as if it had a larger \
+alignment than was declared where it was defined"),
+ name, input_bfd, input_section, rel->r_offset);
+ }
+ break;
+
+ case bfd_reloc_undefined:
+ (*info->callbacks->undefined_symbol)
+ (info, name, input_bfd, input_section, rel->r_offset, true);
+ break;
+
+ case bfd_reloc_outofrange:
+ error_message = _("out of range");
+ goto common_error;
+
+ case bfd_reloc_notsupported:
+ error_message = _("unsupported relocation");
+ goto common_error;
+
+ case bfd_reloc_dangerous:
+ /* error_message should already be set. */
+ goto common_error;
+
+ default:
+ error_message = _("unknown error");
+ /* Fall through. */
+
+ common_error:
+ BFD_ASSERT (error_message != NULL);
+ (*info->callbacks->reloc_dangerous)
+ (info, error_message, input_bfd, input_section, rel->r_offset);
+ break;
+ }
+ }
+
+ if (!save_addend)
+ addend = 0;
+ }
+
+ return true;
+}
+
+/* Set the right machine number. */
+
+static bool
+elfNN_aarch64_object_p (bfd *abfd)
+{
+#if ARCH_SIZE == 32
+ bfd_default_set_arch_mach (abfd, bfd_arch_aarch64, bfd_mach_aarch64_ilp32);
+#else
+ bfd_default_set_arch_mach (abfd, bfd_arch_aarch64, bfd_mach_aarch64);
+#endif
+ return true;
+}
+
+/* Function to keep AArch64 specific flags in the ELF header. */
+
+static bool
+elfNN_aarch64_set_private_flags (bfd *abfd, flagword flags)
+{
+ if (elf_flags_init (abfd) && elf_elfheader (abfd)->e_flags != flags)
+ {
+ }
+ else
+ {
+ elf_elfheader (abfd)->e_flags = flags;
+ elf_flags_init (abfd) = true;
+ }
+
+ return true;
+}
+
+/* Merge backend specific data from an object file to the output
+ object file when linking. */
+
+static bool
+elfNN_aarch64_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
+{
+ bfd *obfd = info->output_bfd;
+ flagword out_flags;
+ flagword in_flags;
+ bool flags_compatible = true;
+ asection *sec;
+
+ /* Check if we have the same endianess. */
+ if (!_bfd_generic_verify_endian_match (ibfd, info))
+ return false;
+
+ if (!is_aarch64_elf (ibfd) || !is_aarch64_elf (obfd))
+ return true;
+
+ /* The input BFD must have had its flags initialised. */
+ /* The following seems bogus to me -- The flags are initialized in
+ the assembler but I don't think an elf_flags_init field is
+ written into the object. */
+ /* BFD_ASSERT (elf_flags_init (ibfd)); */
+
+ in_flags = elf_elfheader (ibfd)->e_flags;
+ out_flags = elf_elfheader (obfd)->e_flags;
+
+ if (!elf_flags_init (obfd))
+ {
+ /* If the input is the default architecture and had the default
+ flags then do not bother setting the flags for the output
+ architecture, instead allow future merges to do this. If no
+ future merges ever set these flags then they will retain their
+ uninitialised values, which surprise surprise, correspond
+ to the default values. */
+ if (bfd_get_arch_info (ibfd)->the_default
+ && elf_elfheader (ibfd)->e_flags == 0)
+ return true;
+
+ elf_flags_init (obfd) = true;
+ elf_elfheader (obfd)->e_flags = in_flags;
+
+ if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
+ && bfd_get_arch_info (obfd)->the_default)
+ return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd),
+ bfd_get_mach (ibfd));
+
+ return true;
+ }
+
+ /* Identical flags must be compatible. */
+ if (in_flags == out_flags)
+ return true;
+
+ /* Check to see if the input BFD actually contains any sections. If
+ not, its flags may not have been initialised either, but it
+ cannot actually cause any incompatiblity. Do not short-circuit
+ dynamic objects; their section list may be emptied by
+ elf_link_add_object_symbols.
+
+ Also check to see if there are no code sections in the input.
+ In this case there is no need to check for code specific flags.
+ XXX - do we need to worry about floating-point format compatability
+ in data sections ? */
+ if (!(ibfd->flags & DYNAMIC))
+ {
+ bool null_input_bfd = true;
+ bool only_data_sections = true;
+
+ for (sec = ibfd->sections; sec != NULL; sec = sec->next)
+ {
+ if ((bfd_section_flags (sec)
+ & (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS))
+ == (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS))
+ only_data_sections = false;
+
+ null_input_bfd = false;
+ break;
+ }
+
+ if (null_input_bfd || only_data_sections)
+ return true;
+ }
+
+ return flags_compatible;
+}
+
+/* Display the flags field. */
+
+static bool
+elfNN_aarch64_print_private_bfd_data (bfd *abfd, void *ptr)
+{
+ FILE *file = (FILE *) ptr;
+ unsigned long flags;
+
+ BFD_ASSERT (abfd != NULL && ptr != NULL);
+
+ /* Print normal ELF private data. */
+ _bfd_elf_print_private_bfd_data (abfd, ptr);
+
+ flags = elf_elfheader (abfd)->e_flags;
+ /* Ignore init flag - it may not be set, despite the flags field
+ containing valid data. */
+
+ /* xgettext:c-format */
+ fprintf (file, _("private flags = 0x%lx:"), elf_elfheader (abfd)->e_flags);
+
+ if (flags)
+ fprintf (file, _(" <Unrecognised flag bits set>"));
+
+ fputc ('\n', file);
+
+ return true;
+}
+
+/* Return true if we need copy relocation against EH. */
+
+static bool
+need_copy_relocation_p (struct elf_aarch64_link_hash_entry *eh)
+{
+ struct elf_dyn_relocs *p;
+ asection *s;
+
+ for (p = eh->root.dyn_relocs; p != NULL; p = p->next)
+ {
+ /* If there is any pc-relative reference, we need to keep copy relocation
+ to avoid propagating the relocation into runtime that current glibc
+ does not support. */
+ if (p->pc_count)
+ return true;
+
+ s = p->sec->output_section;
+ /* Need copy relocation if it's against read-only section. */
+ if (s != NULL && (s->flags & SEC_READONLY) != 0)
+ return true;
+ }
+
+ return false;
+}
+
+/* Adjust a symbol defined by a dynamic object and referenced by a
+ regular object. The current definition is in some section of the
+ dynamic object, but we're not including those sections. We have to
+ change the definition to something the rest of the link can
+ understand. */
+
+static bool
+elfNN_aarch64_adjust_dynamic_symbol (struct bfd_link_info *info,
+ struct elf_link_hash_entry *h)
+{
+ struct elf_aarch64_link_hash_table *htab;
+ asection *s, *srel;
+
+ /* If this is a function, put it in the procedure linkage table. We
+ will fill in the contents of the procedure linkage table later,
+ when we know the address of the .got section. */
+ if (h->type == STT_FUNC || h->type == STT_GNU_IFUNC || h->needs_plt)
+ {
+ if (h->plt.refcount <= 0
+ || (h->type != STT_GNU_IFUNC
+ && (SYMBOL_CALLS_LOCAL (info, h)
+ || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
+ && h->root.type == bfd_link_hash_undefweak))))
+ {
+ /* This case can occur if we saw a CALL26 reloc in
+ an input file, but the symbol wasn't referred to
+ by a dynamic object or all references were
+ garbage collected. In which case we can end up
+ resolving. */
+ h->plt.offset = (bfd_vma) - 1;
+ h->needs_plt = 0;
+ }
+
+ return true;
+ }
+ else
+ /* Otherwise, reset to -1. */
+ h->plt.offset = (bfd_vma) - 1;
+
+
+ /* If this is a weak symbol, and there is a real definition, the
+ processor independent code will have arranged for us to see the
+ real definition first, and we can just use the same value. */
+ if (h->is_weakalias)
+ {
+ struct elf_link_hash_entry *def = weakdef (h);
+ BFD_ASSERT (def->root.type == bfd_link_hash_defined);
+ h->root.u.def.section = def->root.u.def.section;
+ h->root.u.def.value = def->root.u.def.value;
+ if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
+ h->non_got_ref = def->non_got_ref;
+ return true;
+ }
+
+ /* If we are creating a shared library, we must presume that the
+ only references to the symbol are via the global offset table.
+ For such cases we need not do anything here; the relocations will
+ be handled correctly by relocate_section. */
+ if (bfd_link_pic (info))
+ return true;
+
+ /* If there are no references to this symbol that do not use the
+ GOT, we don't need to generate a copy reloc. */
+ if (!h->non_got_ref)
+ return true;
+
+ /* If -z nocopyreloc was given, we won't generate them either. */
+ if (info->nocopyreloc)
+ {
+ h->non_got_ref = 0;
+ return true;
+ }
+
+ if (ELIMINATE_COPY_RELOCS)
+ {
+ struct elf_aarch64_link_hash_entry *eh;
+ /* If we don't find any dynamic relocs in read-only sections, then
+ we'll be keeping the dynamic relocs and avoiding the copy reloc. */
+ eh = (struct elf_aarch64_link_hash_entry *) h;
+ if (!need_copy_relocation_p (eh))
+ {
+ h->non_got_ref = 0;
+ return true;
+ }
+ }
+
+ /* We must allocate the symbol in our .dynbss section, which will
+ become part of the .bss section of the executable. There will be
+ an entry for this symbol in the .dynsym section. The dynamic
+ object will contain position independent code, so all references
+ from the dynamic object to this symbol will go through the global
+ offset table. The dynamic linker will use the .dynsym entry to
+ determine the address it must put in the global offset table, so
+ both the dynamic object and the regular object will refer to the
+ same memory location for the variable. */
+
+ htab = elf_aarch64_hash_table (info);
+
+ /* We must generate a R_AARCH64_COPY reloc to tell the dynamic linker
+ to copy the initial value out of the dynamic object and into the
+ runtime process image. */
+ if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
+ {
+ s = htab->root.sdynrelro;
+ srel = htab->root.sreldynrelro;
+ }
+ else
+ {
+ s = htab->root.sdynbss;
+ srel = htab->root.srelbss;
+ }
+ if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
+ {
+ srel->size += RELOC_SIZE (htab);
+ h->needs_copy = 1;
+ }
+
+ return _bfd_elf_adjust_dynamic_copy (info, h, s);
+
+}
+
+static bool
+elfNN_aarch64_allocate_local_symbols (bfd *abfd, unsigned number)
+{
+ struct elf_aarch64_local_symbol *locals;
+ locals = elf_aarch64_locals (abfd);
+ if (locals == NULL)
+ {
+ locals = (struct elf_aarch64_local_symbol *)
+ bfd_zalloc (abfd, number * sizeof (struct elf_aarch64_local_symbol));
+ if (locals == NULL)
+ return false;
+ elf_aarch64_locals (abfd) = locals;
+ }
+ return true;
+}
+
+/* Create the .got section to hold the global offset table. */
+
+static bool
+aarch64_elf_create_got_section (bfd *abfd, struct bfd_link_info *info)
+{
+ const struct elf_backend_data *bed = get_elf_backend_data (abfd);
+ flagword flags;
+ asection *s;
+ struct elf_link_hash_entry *h;
+ struct elf_link_hash_table *htab = elf_hash_table (info);
+
+ /* This function may be called more than once. */
+ if (htab->sgot != NULL)
+ return true;
+
+ flags = bed->dynamic_sec_flags;
+
+ s = bfd_make_section_anyway_with_flags (abfd,
+ (bed->rela_plts_and_copies_p
+ ? ".rela.got" : ".rel.got"),
+ (bed->dynamic_sec_flags
+ | SEC_READONLY));
+ if (s == NULL
+ || !bfd_set_section_alignment (s, bed->s->log_file_align))
+ return false;
+ htab->srelgot = s;
+
+ s = bfd_make_section_anyway_with_flags (abfd, ".got", flags);
+ if (s == NULL
+ || !bfd_set_section_alignment (s, bed->s->log_file_align))
+ return false;
+ htab->sgot = s;
+ htab->sgot->size += GOT_ENTRY_SIZE;
+
+ if (bed->want_got_sym)
+ {
+ /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got
+ (or .got.plt) section. We don't do this in the linker script
+ because we don't want to define the symbol if we are not creating
+ a global offset table. */
+ h = _bfd_elf_define_linkage_sym (abfd, info, s,
+ "_GLOBAL_OFFSET_TABLE_");
+ elf_hash_table (info)->hgot = h;
+ if (h == NULL)
+ return false;
+ }
+
+ if (bed->want_got_plt)
+ {
+ s = bfd_make_section_anyway_with_flags (abfd, ".got.plt", flags);
+ if (s == NULL
+ || !bfd_set_section_alignment (s, bed->s->log_file_align))
+ return false;
+ htab->sgotplt = s;
+ }
+
+ /* The first bit of the global offset table is the header. */
+ s->size += bed->got_header_size;
+
+ return true;
+}
+
+/* Look through the relocs for a section during the first phase. */
+
+static bool
+elfNN_aarch64_check_relocs (bfd *abfd, struct bfd_link_info *info,
+ asection *sec, const Elf_Internal_Rela *relocs)
+{
+ Elf_Internal_Shdr *symtab_hdr;
+ struct elf_link_hash_entry **sym_hashes;
+ const Elf_Internal_Rela *rel;
+ const Elf_Internal_Rela *rel_end;
+ asection *sreloc;
+
+ struct elf_aarch64_link_hash_table *htab;
+
+ if (bfd_link_relocatable (info))
+ return true;
+
+ BFD_ASSERT (is_aarch64_elf (abfd));
+
+ htab = elf_aarch64_hash_table (info);
+ sreloc = NULL;
+
+ symtab_hdr = &elf_symtab_hdr (abfd);
+ sym_hashes = elf_sym_hashes (abfd);
+
+ rel_end = relocs + sec->reloc_count;
+ for (rel = relocs; rel < rel_end; rel++)
+ {
+ struct elf_link_hash_entry *h;
+ unsigned int r_symndx;
+ unsigned int r_type;
+ bfd_reloc_code_real_type bfd_r_type;
+ Elf_Internal_Sym *isym;
+
+ r_symndx = ELFNN_R_SYM (rel->r_info);
+ r_type = ELFNN_R_TYPE (rel->r_info);
+
+ if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
+ {
+ /* xgettext:c-format */
+ _bfd_error_handler (_("%pB: bad symbol index: %d"), abfd, r_symndx);
+ return false;
+ }
+
+ if (r_symndx < symtab_hdr->sh_info)
+ {
+ /* A local symbol. */
+ isym = bfd_sym_from_r_symndx (&htab->root.sym_cache,
+ abfd, r_symndx);
+ if (isym == NULL)
+ return false;
+
+ /* Check relocation against local STT_GNU_IFUNC symbol. */
+ if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
+ {
+ h = elfNN_aarch64_get_local_sym_hash (htab, abfd, rel,
+ true);
+ if (h == NULL)
+ return false;
+
+ /* Fake a STT_GNU_IFUNC symbol. */
+ h->type = STT_GNU_IFUNC;
+ h->def_regular = 1;
+ h->ref_regular = 1;
+ h->forced_local = 1;
+ h->root.type = bfd_link_hash_defined;
+ }
+ else
+ h = NULL;
+ }
+ else
+ {
+ h = sym_hashes[r_symndx - symtab_hdr->sh_info];
+ while (h->root.type == bfd_link_hash_indirect
+ || h->root.type == bfd_link_hash_warning)
+ h = (struct elf_link_hash_entry *) h->root.u.i.link;
+ }
+
+ /* Could be done earlier, if h were already available. */
+ bfd_r_type = aarch64_tls_transition (abfd, info, r_type, h, r_symndx);
+
+ if (h != NULL)
+ {
+ /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
+ This shows up in particular in an R_AARCH64_PREL64 in large model
+ when calculating the pc-relative address to .got section which is
+ used to initialize the gp register. */
+ if (h->root.root.string
+ && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
+ {
+ if (htab->root.dynobj == NULL)
+ htab->root.dynobj = abfd;
+
+ if (! aarch64_elf_create_got_section (htab->root.dynobj, info))
+ return false;
+
+ BFD_ASSERT (h == htab->root.hgot);
+ }
+
+ /* Create the ifunc sections for static executables. If we
+ never see an indirect function symbol nor we are building
+ a static executable, those sections will be empty and
+ won't appear in output. */
+ switch (bfd_r_type)
+ {
+ default:
+ break;
+
+ case BFD_RELOC_AARCH64_ADD_LO12:
+ case BFD_RELOC_AARCH64_ADR_GOT_PAGE:
+ case BFD_RELOC_AARCH64_ADR_HI21_PCREL:
+ case BFD_RELOC_AARCH64_CALL26:
+ case BFD_RELOC_AARCH64_GOT_LD_PREL19:
+ case BFD_RELOC_AARCH64_JUMP26:
+ case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14:
+ case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC:
+ case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15:
+ case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15:
+ case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC:
+ case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC:
+ case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1:
+ case BFD_RELOC_AARCH64_NN:
+ if (htab->root.dynobj == NULL)
+ htab->root.dynobj = abfd;
+ if (!_bfd_elf_create_ifunc_sections (htab->root.dynobj, info))
+ return false;
+ break;
+ }
+
+ /* It is referenced by a non-shared object. */
+ h->ref_regular = 1;
+ }
+
+ switch (bfd_r_type)
+ {
+ case BFD_RELOC_AARCH64_16:
+#if ARCH_SIZE == 64
+ case BFD_RELOC_AARCH64_32:
+#endif
+ if (bfd_link_pic (info) && (sec->flags & SEC_ALLOC) != 0)
+ {
+ if (h != NULL
+ /* This is an absolute symbol. It represents a value instead
+ of an address. */
+ && (bfd_is_abs_symbol (&h->root)
+ /* This is an undefined symbol. */
+ || h->root.type == bfd_link_hash_undefined))
+ break;
+
+ /* For local symbols, defined global symbols in a non-ABS section,
+ it is assumed that the value is an address. */
+ int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START;
+ _bfd_error_handler
+ /* xgettext:c-format */
+ (_("%pB: relocation %s against `%s' can not be used when making "
+ "a shared object"),
+ abfd, elfNN_aarch64_howto_table[howto_index].name,
+ (h) ? h->root.root.string : "a local symbol");
+ bfd_set_error (bfd_error_bad_value);
+ return false;
+ }
+ else
+ break;
+
+ case BFD_RELOC_AARCH64_MOVW_G0_NC:
+ case BFD_RELOC_AARCH64_MOVW_G1_NC:
+ case BFD_RELOC_AARCH64_MOVW_G2_NC:
+ case BFD_RELOC_AARCH64_MOVW_G3:
+ if (bfd_link_pic (info))
+ {
+ int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START;
+ _bfd_error_handler
+ /* xgettext:c-format */
+ (_("%pB: relocation %s against `%s' can not be used when making "
+ "a shared object; recompile with -fPIC"),
+ abfd, elfNN_aarch64_howto_table[howto_index].name,
+ (h) ? h->root.root.string : "a local symbol");
+ bfd_set_error (bfd_error_bad_value);
+ return false;
+ }
+ /* Fall through. */
+
+ case BFD_RELOC_AARCH64_16_PCREL:
+ case BFD_RELOC_AARCH64_32_PCREL:
+ case BFD_RELOC_AARCH64_64_PCREL:
+ case BFD_RELOC_AARCH64_ADD_LO12:
+ case BFD_RELOC_AARCH64_ADR_HI21_NC_PCREL:
+ case BFD_RELOC_AARCH64_ADR_HI21_PCREL:
+ case BFD_RELOC_AARCH64_ADR_LO21_PCREL:
+ case BFD_RELOC_AARCH64_LDST128_LO12:
+ case BFD_RELOC_AARCH64_LDST16_LO12:
+ case BFD_RELOC_AARCH64_LDST32_LO12:
+ case BFD_RELOC_AARCH64_LDST64_LO12:
+ case BFD_RELOC_AARCH64_LDST8_LO12:
+ case BFD_RELOC_AARCH64_LD_LO19_PCREL:
+ if (h == NULL || bfd_link_pic (info))
+ break;
+ /* Fall through. */
+
+ case BFD_RELOC_AARCH64_NN:
+
+ /* We don't need to handle relocs into sections not going into
+ the "real" output. */
+ if ((sec->flags & SEC_ALLOC) == 0)
+ break;
+
+ if (h != NULL)
+ {
+ if (!bfd_link_pic (info))
+ h->non_got_ref = 1;
+
+ h->plt.refcount += 1;
+ h->pointer_equality_needed = 1;
+ }
+
+ /* No need to do anything if we're not creating a shared
+ object. */
+ if (!(bfd_link_pic (info)
+ /* If on the other hand, we are creating an executable, we
+ may need to keep relocations for symbols satisfied by a
+ dynamic library if we manage to avoid copy relocs for the
+ symbol.
+
+ NOTE: Currently, there is no support of copy relocs
+ elimination on pc-relative relocation types, because there is
+ no dynamic relocation support for them in glibc. We still
+ record the dynamic symbol reference for them. This is
+ because one symbol may be referenced by both absolute
+ relocation (for example, BFD_RELOC_AARCH64_NN) and
+ pc-relative relocation. We need full symbol reference
+ information to make correct decision later in
+ elfNN_aarch64_adjust_dynamic_symbol. */
+ || (ELIMINATE_COPY_RELOCS
+ && !bfd_link_pic (info)
+ && h != NULL
+ && (h->root.type == bfd_link_hash_defweak
+ || !h->def_regular))))
+ break;
+
+ {
+ struct elf_dyn_relocs *p;
+ struct elf_dyn_relocs **head;
+ int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START;
+
+ /* We must copy these reloc types into the output file.
+ Create a reloc section in dynobj and make room for
+ this reloc. */
+ if (sreloc == NULL)
+ {
+ if (htab->root.dynobj == NULL)
+ htab->root.dynobj = abfd;
+
+ sreloc = _bfd_elf_make_dynamic_reloc_section
+ (sec, htab->root.dynobj, LOG_FILE_ALIGN, abfd, /*rela? */ true);
+
+ if (sreloc == NULL)
+ return false;
+ }
+
+ /* If this is a global symbol, we count the number of
+ relocations we need for this symbol. */
+ if (h != NULL)
+ {
+ head = &h->dyn_relocs;
+ }
+ else
+ {
+ /* Track dynamic relocs needed for local syms too.
+ We really need local syms available to do this
+ easily. Oh well. */
+
+ asection *s;
+ void **vpp;
+
+ isym = bfd_sym_from_r_symndx (&htab->root.sym_cache,
+ abfd, r_symndx);
+ if (isym == NULL)
+ return false;
+
+ s = bfd_section_from_elf_index (abfd, isym->st_shndx);
+ if (s == NULL)
+ s = sec;
+
+ /* Beware of type punned pointers vs strict aliasing
+ rules. */
+ vpp = &(elf_section_data (s)->local_dynrel);
+ head = (struct elf_dyn_relocs **) vpp;
+ }
+
+ p = *head;
+ if (p == NULL || p->sec != sec)
+ {
+ size_t amt = sizeof *p;
+ p = ((struct elf_dyn_relocs *)
+ bfd_zalloc (htab->root.dynobj, amt));
+ if (p == NULL)
+ return false;
+ p->next = *head;
+ *head = p;
+ p->sec = sec;
+ }
+
+ p->count += 1;
+
+ if (elfNN_aarch64_howto_table[howto_index].pc_relative)
+ p->pc_count += 1;
+ }
+ break;
+
+ /* RR: We probably want to keep a consistency check that
+ there are no dangling GOT_PAGE relocs. */
+ case BFD_RELOC_AARCH64_ADR_GOT_PAGE:
+ case BFD_RELOC_AARCH64_GOT_LD_PREL19:
+ case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14:
+ case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC:
+ case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15:
+ case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15:
+ case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC:
+ case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC:
+ case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1:
+ case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12:
+ case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21:
+ case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21:
+ case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC:
+ case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12:
+ case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19:
+ case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC:
+ case BFD_RELOC_AARCH64_TLSDESC_OFF_G1:
+ case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC:
+ case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21:
+ case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21:
+ case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC:
+ case BFD_RELOC_AARCH64_TLSGD_MOVW_G1:
+ case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21:
+ case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC:
+ case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC:
+ case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19:
+ case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC:
+ case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1:
+ case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC:
+ case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21:
+ case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21:
+ {
+ unsigned got_type;
+ unsigned old_got_type;
+
+ got_type = aarch64_reloc_got_type (bfd_r_type);
+
+ if (h)
+ {
+ h->got.refcount += 1;
+ old_got_type = elf_aarch64_hash_entry (h)->got_type;
+ }
+ else
+ {
+ struct elf_aarch64_local_symbol *locals;
+
+ if (!elfNN_aarch64_allocate_local_symbols
+ (abfd, symtab_hdr->sh_info))
+ return false;
+
+ locals = elf_aarch64_locals (abfd);
+ BFD_ASSERT (r_symndx < symtab_hdr->sh_info);
+ locals[r_symndx].got_refcount += 1;
+ old_got_type = locals[r_symndx].got_type;
+ }
+
+ /* If a variable is accessed with both general dynamic TLS
+ methods, two slots may be created. */
+ if (GOT_TLS_GD_ANY_P (old_got_type) && GOT_TLS_GD_ANY_P (got_type))
+ got_type |= old_got_type;
+
+ /* We will already have issued an error message if there
+ is a TLS/non-TLS mismatch, based on the symbol type.
+ So just combine any TLS types needed. */
+ if (old_got_type != GOT_UNKNOWN && old_got_type != GOT_NORMAL
+ && got_type != GOT_NORMAL)
+ got_type |= old_got_type;
+
+ /* If the symbol is accessed by both IE and GD methods, we
+ are able to relax. Turn off the GD flag, without
+ messing up with any other kind of TLS types that may be
+ involved. */
+ if ((got_type & GOT_TLS_IE) && GOT_TLS_GD_ANY_P (got_type))
+ got_type &= ~ (GOT_TLSDESC_GD | GOT_TLS_GD);
+
+ if (old_got_type != got_type)
+ {
+ if (h != NULL)
+ elf_aarch64_hash_entry (h)->got_type = got_type;
+ else
+ {
+ struct elf_aarch64_local_symbol *locals;
+ locals = elf_aarch64_locals (abfd);
+ BFD_ASSERT (r_symndx < symtab_hdr->sh_info);
+ locals[r_symndx].got_type = got_type;
+ }
+ }
+
+ if (htab->root.dynobj == NULL)
+ htab->root.dynobj = abfd;
+ if (! aarch64_elf_create_got_section (htab->root.dynobj, info))
+ return false;
+ break;
+ }
+
+ case BFD_RELOC_AARCH64_CALL26:
+ case BFD_RELOC_AARCH64_JUMP26:
+ /* If this is a local symbol then we resolve it
+ directly without creating a PLT entry. */
+ if (h == NULL)
+ continue;
+
+ h->needs_plt = 1;
+ if (h->plt.refcount <= 0)
+ h->plt.refcount = 1;
+ else
+ h->plt.refcount += 1;
+ break;
+
+ default:
+ break;
+ }
+ }
+
+ return true;
+}
+
+/* Treat mapping symbols as special target symbols. */
+
+static bool
+elfNN_aarch64_is_target_special_symbol (bfd *abfd ATTRIBUTE_UNUSED,
+ asymbol *sym)
+{
+ return bfd_is_aarch64_special_symbol_name (sym->name,
+ BFD_AARCH64_SPECIAL_SYM_TYPE_ANY);
+}
+
+/* If the ELF symbol SYM might be a function in SEC, return the
+ function size and set *CODE_OFF to the function's entry point,
+ otherwise return zero. */
+
+static bfd_size_type
+elfNN_aarch64_maybe_function_sym (const asymbol *sym, asection *sec,
+ bfd_vma *code_off)
+{
+ bfd_size_type size;
+ elf_symbol_type * elf_sym = (elf_symbol_type *) sym;
+
+ if ((sym->flags & (BSF_SECTION_SYM | BSF_FILE | BSF_OBJECT
+ | BSF_THREAD_LOCAL | BSF_RELC | BSF_SRELC)) != 0
+ || sym->section != sec)
+ return 0;
+
+ size = (sym->flags & BSF_SYNTHETIC) ? 0 : elf_sym->internal_elf_sym.st_size;
+
+ if (!(sym->flags & BSF_SYNTHETIC))
+ switch (ELF_ST_TYPE (elf_sym->internal_elf_sym.st_info))
+ {
+ case STT_NOTYPE:
+ /* Ignore symbols created by the annobin plugin for gcc and clang.
+ These symbols are hidden, local, notype and have a size of 0. */
+ if (size == 0
+ && sym->flags & BSF_LOCAL
+ && ELF_ST_VISIBILITY (elf_sym->internal_elf_sym.st_other) == STV_HIDDEN)
+ return 0;
+ /* Fall through. */
+ case STT_FUNC:
+ /* FIXME: Allow STT_GNU_IFUNC as well ? */
+ break;
+ default:
+ return 0;
+ }
+
+ if ((sym->flags & BSF_LOCAL)
+ && bfd_is_aarch64_special_symbol_name (sym->name,
+ BFD_AARCH64_SPECIAL_SYM_TYPE_ANY))
+ return 0;
+
+ *code_off = sym->value;
+
+ /* Do not return 0 for the function's size. */
+ return size ? size : 1;
+}
+
+static bool
+elfNN_aarch64_find_inliner_info (bfd *abfd,
+ const char **filename_ptr,
+ const char **functionname_ptr,
+ unsigned int *line_ptr)
+{
+ bool found;
+ found = _bfd_dwarf2_find_inliner_info
+ (abfd, filename_ptr,
+ functionname_ptr, line_ptr, &elf_tdata (abfd)->dwarf2_find_line_info);
+ return found;
+}
+
+
+static bool
+elfNN_aarch64_init_file_header (bfd *abfd, struct bfd_link_info *link_info)
+{
+ Elf_Internal_Ehdr *i_ehdrp; /* ELF file header, internal form. */
+
+ if (!_bfd_elf_init_file_header (abfd, link_info))
+ return false;
+
+ i_ehdrp = elf_elfheader (abfd);
+ i_ehdrp->e_ident[EI_ABIVERSION] = AARCH64_ELF_ABI_VERSION;
+ return true;
+}
+
+static enum elf_reloc_type_class
+elfNN_aarch64_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
+ const asection *rel_sec ATTRIBUTE_UNUSED,
+ const Elf_Internal_Rela *rela)
+{
+ struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info);
+
+ if (htab->root.dynsym != NULL
+ && htab->root.dynsym->contents != NULL)
+ {
+ /* Check relocation against STT_GNU_IFUNC symbol if there are
+ dynamic symbols. */
+ bfd *abfd = info->output_bfd;
+ const struct elf_backend_data *bed = get_elf_backend_data (abfd);
+ unsigned long r_symndx = ELFNN_R_SYM (rela->r_info);
+ if (r_symndx != STN_UNDEF)
+ {
+ Elf_Internal_Sym sym;
+ if (!bed->s->swap_symbol_in (abfd,
+ (htab->root.dynsym->contents
+ + r_symndx * bed->s->sizeof_sym),
+ 0, &sym))
+ {
+ /* xgettext:c-format */
+ _bfd_error_handler (_("%pB symbol number %lu references"
+ " nonexistent SHT_SYMTAB_SHNDX section"),
+ abfd, r_symndx);
+ /* Ideally an error class should be returned here. */
+ }
+ else if (ELF_ST_TYPE (sym.st_info) == STT_GNU_IFUNC)
+ return reloc_class_ifunc;
+ }
+ }
+
+ switch ((int) ELFNN_R_TYPE (rela->r_info))
+ {
+ case AARCH64_R (IRELATIVE):
+ return reloc_class_ifunc;
+ case AARCH64_R (RELATIVE):
+ return reloc_class_relative;
+ case AARCH64_R (JUMP_SLOT):
+ return reloc_class_plt;
+ case AARCH64_R (COPY):
+ return reloc_class_copy;
+ default:
+ return reloc_class_normal;
+ }
+}
+
+/* Handle an AArch64 specific section when reading an object file. This is
+ called when bfd_section_from_shdr finds a section with an unknown
+ type. */
+
+static bool
+elfNN_aarch64_section_from_shdr (bfd *abfd,
+ Elf_Internal_Shdr *hdr,
+ const char *name, int shindex)
+{
+ /* There ought to be a place to keep ELF backend specific flags, but
+ at the moment there isn't one. We just keep track of the
+ sections by their name, instead. Fortunately, the ABI gives
+ names for all the AArch64 specific sections, so we will probably get
+ away with this. */
+ switch (hdr->sh_type)
+ {
+ case SHT_AARCH64_ATTRIBUTES:
+ break;
+
+ default:
+ return false;
+ }
+
+ if (!_bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
+ return false;
+
+ return true;
+}
+
+/* Process any AArch64-specific program segment types. */
+
+static bool
+elfNN_aarch64_section_from_phdr (bfd *abfd ATTRIBUTE_UNUSED,
+ Elf_Internal_Phdr *hdr,
+ int hdr_index ATTRIBUTE_UNUSED,
+ const char *name ATTRIBUTE_UNUSED)
+{
+ /* Right now we only handle the PT_AARCH64_MEMTAG_MTE segment type. */
+ if (hdr == NULL || hdr->p_type != PT_AARCH64_MEMTAG_MTE)
+ return false;
+
+ if (hdr->p_filesz > 0)
+ {
+ /* Sections created from memory tag p_type's are always named
+ "memtag". This makes it easier for tools (for example, GDB)
+ to find them. */
+ asection *newsect = bfd_make_section_anyway (abfd, "memtag");
+
+ if (newsect == NULL)
+ return false;
+
+ unsigned int opb = bfd_octets_per_byte (abfd, NULL);
+
+ /* p_vaddr holds the original start address of the tagged memory
+ range. */
+ newsect->vma = hdr->p_vaddr / opb;
+
+ /* p_filesz holds the storage size of the packed tags. */
+ newsect->size = hdr->p_filesz;
+ newsect->filepos = hdr->p_offset;
+
+ /* p_memsz holds the size of the memory range that contains tags. The
+ section's rawsize field is reused for this purpose. */
+ newsect->rawsize = hdr->p_memsz;
+
+ /* Make sure the section's flags has SEC_HAS_CONTENTS set, otherwise
+ BFD will return all zeroes when attempting to get contents from this
+ section. */
+ newsect->flags |= SEC_HAS_CONTENTS;
+ }
+
+ return true;
+}
+
+/* Implements the bfd_elf_modify_headers hook for aarch64. */
+
+static bool
+elfNN_aarch64_modify_headers (bfd *abfd,
+ struct bfd_link_info *info)
+{
+ struct elf_segment_map *m;
+ unsigned int segment_count = 0;
+ Elf_Internal_Phdr *p;
+
+ for (m = elf_seg_map (abfd); m != NULL; m = m->next, segment_count++)
+ {
+ /* We are only interested in the memory tag segment that will be dumped
+ to a core file. If we have no memory tags or this isn't a core file we
+ are dealing with, just skip this segment. */
+ if (m->p_type != PT_AARCH64_MEMTAG_MTE
+ || bfd_get_format (abfd) != bfd_core)
+ continue;
+
+ /* For memory tag segments in core files, the size of the file contents
+ is smaller than the size of the memory range. Adjust the memory size
+ accordingly. The real memory size is held in the section's rawsize
+ field. */
+ if (m->count > 0)
+ {
+ p = elf_tdata (abfd)->phdr;
+ p += m->idx;
+ p->p_memsz = m->sections[0]->rawsize;
+ p->p_flags = 0;
+ p->p_paddr = 0;
+ p->p_align = 0;
+ }
+ }
+
+ /* Give the generic code a chance to handle the headers. */
+ return _bfd_elf_modify_headers (abfd, info);
+}
+
+/* A structure used to record a list of sections, independently
+ of the next and prev fields in the asection structure. */
+typedef struct section_list
+{
+ asection *sec;
+ struct section_list *next;
+ struct section_list *prev;
+}
+section_list;
+
+/* Unfortunately we need to keep a list of sections for which
+ an _aarch64_elf_section_data structure has been allocated. This
+ is because it is possible for functions like elfNN_aarch64_write_section
+ to be called on a section which has had an elf_data_structure
+ allocated for it (and so the used_by_bfd field is valid) but
+ for which the AArch64 extended version of this structure - the
+ _aarch64_elf_section_data structure - has not been allocated. */
+static section_list *sections_with_aarch64_elf_section_data = NULL;
+
+static void
+record_section_with_aarch64_elf_section_data (asection *sec)
+{
+ struct section_list *entry;
+
+ entry = bfd_malloc (sizeof (*entry));
+ if (entry == NULL)
+ return;
+ entry->sec = sec;
+ entry->next = sections_with_aarch64_elf_section_data;
+ entry->prev = NULL;
+ if (entry->next != NULL)
+ entry->next->prev = entry;
+ sections_with_aarch64_elf_section_data = entry;
+}
+
+static struct section_list *
+find_aarch64_elf_section_entry (asection *sec)
+{
+ struct section_list *entry;
+ static struct section_list *last_entry = NULL;
+
+ /* This is a short cut for the typical case where the sections are added
+ to the sections_with_aarch64_elf_section_data list in forward order and
+ then looked up here in backwards order. This makes a real difference
+ to the ld-srec/sec64k.exp linker test. */
+ entry = sections_with_aarch64_elf_section_data;
+ if (last_entry != NULL)
+ {
+ if (last_entry->sec == sec)
+ entry = last_entry;
+ else if (last_entry->next != NULL && last_entry->next->sec == sec)
+ entry = last_entry->next;
+ }
+
+ for (; entry; entry = entry->next)
+ if (entry->sec == sec)
+ break;
+
+ if (entry)
+ /* Record the entry prior to this one - it is the entry we are
+ most likely to want to locate next time. Also this way if we
+ have been called from
+ unrecord_section_with_aarch64_elf_section_data () we will not
+ be caching a pointer that is about to be freed. */
+ last_entry = entry->prev;
+
+ return entry;
+}
+
+static void
+unrecord_section_with_aarch64_elf_section_data (asection *sec)
+{
+ struct section_list *entry;
+
+ entry = find_aarch64_elf_section_entry (sec);
+
+ if (entry)
+ {
+ if (entry->prev != NULL)
+ entry->prev->next = entry->next;
+ if (entry->next != NULL)
+ entry->next->prev = entry->prev;
+ if (entry == sections_with_aarch64_elf_section_data)
+ sections_with_aarch64_elf_section_data = entry->next;
+ free (entry);
+ }
+}
+
+
+typedef struct
+{
+ void *finfo;
+ struct bfd_link_info *info;
+ asection *sec;
+ int sec_shndx;
+ int (*func) (void *, const char *, Elf_Internal_Sym *,
+ asection *, struct elf_link_hash_entry *);
+} output_arch_syminfo;
+
+enum map_symbol_type
+{
+ AARCH64_MAP_INSN,
+ AARCH64_MAP_DATA
+};
+
+
+/* Output a single mapping symbol. */
+
+static bool
+elfNN_aarch64_output_map_sym (output_arch_syminfo *osi,
+ enum map_symbol_type type, bfd_vma offset)
+{
+ static const char *names[2] = { "$x", "$d" };
+ Elf_Internal_Sym sym;
+
+ sym.st_value = (osi->sec->output_section->vma
+ + osi->sec->output_offset + offset);
+ sym.st_size = 0;
+ sym.st_other = 0;
+ sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_NOTYPE);
+ sym.st_shndx = osi->sec_shndx;
+ return osi->func (osi->finfo, names[type], &sym, osi->sec, NULL) == 1;
+}
+
+/* Output a single local symbol for a generated stub. */
+
+static bool
+elfNN_aarch64_output_stub_sym (output_arch_syminfo *osi, const char *name,
+ bfd_vma offset, bfd_vma size)
+{
+ Elf_Internal_Sym sym;
+
+ sym.st_value = (osi->sec->output_section->vma
+ + osi->sec->output_offset + offset);
+ sym.st_size = size;
+ sym.st_other = 0;
+ sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_FUNC);
+ sym.st_shndx = osi->sec_shndx;
+ return osi->func (osi->finfo, name, &sym, osi->sec, NULL) == 1;
+}
+
+static bool
+aarch64_map_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
+{
+ struct elf_aarch64_stub_hash_entry *stub_entry;
+ asection *stub_sec;
+ bfd_vma addr;
+ char *stub_name;
+ output_arch_syminfo *osi;
+
+ /* Massage our args to the form they really have. */
+ stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry;
+ osi = (output_arch_syminfo *) in_arg;
+
+ stub_sec = stub_entry->stub_sec;
+
+ /* Ensure this stub is attached to the current section being
+ processed. */
+ if (stub_sec != osi->sec)
+ return true;
+
+ addr = (bfd_vma) stub_entry->stub_offset;
+
+ stub_name = stub_entry->output_name;
+
+ switch (stub_entry->stub_type)
+ {
+ case aarch64_stub_adrp_branch:
+ if (!elfNN_aarch64_output_stub_sym (osi, stub_name, addr,
+ sizeof (aarch64_adrp_branch_stub)))
+ return false;
+ if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr))
+ return false;
+ break;
+ case aarch64_stub_long_branch:
+ if (!elfNN_aarch64_output_stub_sym
+ (osi, stub_name, addr, sizeof (aarch64_long_branch_stub)))
+ return false;
+ if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr))
+ return false;
+ if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_DATA, addr + 16))
+ return false;
+ break;
+ case aarch64_stub_erratum_835769_veneer:
+ if (!elfNN_aarch64_output_stub_sym (osi, stub_name, addr,
+ sizeof (aarch64_erratum_835769_stub)))
+ return false;
+ if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr))
+ return false;
+ break;
+ case aarch64_stub_erratum_843419_veneer:
+ if (!elfNN_aarch64_output_stub_sym (osi, stub_name, addr,
+ sizeof (aarch64_erratum_843419_stub)))
+ return false;
+ if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr))
+ return false;
+ break;
+ case aarch64_stub_none:
+ break;
+
+ default:
+ abort ();
+ }
+
+ return true;
+}
+
+/* Output mapping symbols for linker generated sections. */
+
+static bool
+elfNN_aarch64_output_arch_local_syms (bfd *output_bfd,
+ struct bfd_link_info *info,
+ void *finfo,
+ int (*func) (void *, const char *,
+ Elf_Internal_Sym *,
+ asection *,
+ struct elf_link_hash_entry
+ *))
+{
+ output_arch_syminfo osi;
+ struct elf_aarch64_link_hash_table *htab;
+
+ if (info->strip == strip_all
+ && !info->emitrelocations
+ && !bfd_link_relocatable (info))
+ return true;
+
+ htab = elf_aarch64_hash_table (info);
+
+ osi.finfo = finfo;
+ osi.info = info;
+ osi.func = func;
+
+ /* Long calls stubs. */
+ if (htab->stub_bfd && htab->stub_bfd->sections)
+ {
+ asection *stub_sec;
+
+ for (stub_sec = htab->stub_bfd->sections;
+ stub_sec != NULL; stub_sec = stub_sec->next)
+ {
+ /* Ignore non-stub sections. */
+ if (!strstr (stub_sec->name, STUB_SUFFIX))
+ continue;
+
+ osi.sec = stub_sec;
+
+ osi.sec_shndx = _bfd_elf_section_from_bfd_section
+ (output_bfd, osi.sec->output_section);
+
+ /* The first instruction in a stub is always a branch. */
+ if (!elfNN_aarch64_output_map_sym (&osi, AARCH64_MAP_INSN, 0))
+ return false;
+
+ bfd_hash_traverse (&htab->stub_hash_table, aarch64_map_one_stub,
+ &osi);
+ }
+ }
+
+ /* Finally, output mapping symbols for the PLT. */
+ if (!htab->root.splt || htab->root.splt->size == 0)
+ return true;
+
+ osi.sec_shndx = _bfd_elf_section_from_bfd_section
+ (output_bfd, htab->root.splt->output_section);
+ osi.sec = htab->root.splt;
+
+ elfNN_aarch64_output_map_sym (&osi, AARCH64_MAP_INSN, 0);
+
+ return true;
+
+}
+
+/* Allocate target specific section data. */
+
+static bool
+elfNN_aarch64_new_section_hook (bfd *abfd, asection *sec)
+{
+ if (!sec->used_by_bfd)
+ {
+ _aarch64_elf_section_data *sdata;
+ size_t amt = sizeof (*sdata);
+
+ sdata = bfd_zalloc (abfd, amt);
+ if (sdata == NULL)
+ return false;
+ sec->used_by_bfd = sdata;
+ }
+
+ record_section_with_aarch64_elf_section_data (sec);
+
+ return _bfd_elf_new_section_hook (abfd, sec);
+}
+
+
+static void
+unrecord_section_via_map_over_sections (bfd *abfd ATTRIBUTE_UNUSED,
+ asection *sec,
+ void *ignore ATTRIBUTE_UNUSED)
+{
+ unrecord_section_with_aarch64_elf_section_data (sec);
+}
+
+static bool
+elfNN_aarch64_close_and_cleanup (bfd *abfd)
+{
+ if (abfd->sections)
+ bfd_map_over_sections (abfd,
+ unrecord_section_via_map_over_sections, NULL);
+
+ return _bfd_elf_close_and_cleanup (abfd);
+}
+
+static bool
+elfNN_aarch64_bfd_free_cached_info (bfd *abfd)
+{
+ if (abfd->sections)
+ bfd_map_over_sections (abfd,
+ unrecord_section_via_map_over_sections, NULL);
+
+ return _bfd_free_cached_info (abfd);
+}
+
+/* Create dynamic sections. This is different from the ARM backend in that
+ the got, plt, gotplt and their relocation sections are all created in the
+ standard part of the bfd elf backend. */
+
+static bool
+elfNN_aarch64_create_dynamic_sections (bfd *dynobj,
+ struct bfd_link_info *info)
+{
+ /* We need to create .got section. */
+ if (!aarch64_elf_create_got_section (dynobj, info))
+ return false;
+
+ return _bfd_elf_create_dynamic_sections (dynobj, info);
+}
+
+
+/* Allocate space in .plt, .got and associated reloc sections for
+ dynamic relocs. */
+
+static bool
+elfNN_aarch64_allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
+{
+ struct bfd_link_info *info;
+ struct elf_aarch64_link_hash_table *htab;
+ struct elf_aarch64_link_hash_entry *eh;
+ struct elf_dyn_relocs *p;
+
+ /* An example of a bfd_link_hash_indirect symbol is versioned
+ symbol. For example: __gxx_personality_v0(bfd_link_hash_indirect)
+ -> __gxx_personality_v0(bfd_link_hash_defined)
+
+ There is no need to process bfd_link_hash_indirect symbols here
+ because we will also be presented with the concrete instance of
+ the symbol and elfNN_aarch64_copy_indirect_symbol () will have been
+ called to copy all relevant data from the generic to the concrete
+ symbol instance. */
+ if (h->root.type == bfd_link_hash_indirect)
+ return true;
+
+ if (h->root.type == bfd_link_hash_warning)
+ h = (struct elf_link_hash_entry *) h->root.u.i.link;
+
+ info = (struct bfd_link_info *) inf;
+ htab = elf_aarch64_hash_table (info);
+
+ /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
+ here if it is defined and referenced in a non-shared object. */
+ if (h->type == STT_GNU_IFUNC
+ && h->def_regular)
+ return true;
+ else if (htab->root.dynamic_sections_created && h->plt.refcount > 0)
+ {
+ /* Make sure this symbol is output as a dynamic symbol.
+ Undefined weak syms won't yet be marked as dynamic. */
+ if (h->dynindx == -1 && !h->forced_local
+ && h->root.type == bfd_link_hash_undefweak)
+ {
+ if (!bfd_elf_link_record_dynamic_symbol (info, h))
+ return false;
+ }
+
+ if (bfd_link_pic (info) || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
+ {
+ asection *s = htab->root.splt;
+
+ /* If this is the first .plt entry, make room for the special
+ first entry. */
+ if (s->size == 0)
+ s->size += htab->plt_header_size;
+
+ h->plt.offset = s->size;
+
+ /* If this symbol is not defined in a regular file, and we are
+ not generating a shared library, then set the symbol to this
+ location in the .plt. This is required to make function
+ pointers compare as equal between the normal executable and
+ the shared library. */
+ if (!bfd_link_pic (info) && !h->def_regular)
+ {
+ h->root.u.def.section = s;
+ h->root.u.def.value = h->plt.offset;
+ }
+
+ /* Make room for this entry. For now we only create the
+ small model PLT entries. We later need to find a way
+ of relaxing into these from the large model PLT entries. */
+ s->size += htab->plt_entry_size;
+
+ /* We also need to make an entry in the .got.plt section, which
+ will be placed in the .got section by the linker script. */
+ htab->root.sgotplt->size += GOT_ENTRY_SIZE;
+
+ /* We also need to make an entry in the .rela.plt section. */
+ htab->root.srelplt->size += RELOC_SIZE (htab);
+
+ /* We need to ensure that all GOT entries that serve the PLT
+ are consecutive with the special GOT slots [0] [1] and
+ [2]. Any addtional relocations, such as
+ R_AARCH64_TLSDESC, must be placed after the PLT related
+ entries. We abuse the reloc_count such that during
+ sizing we adjust reloc_count to indicate the number of
+ PLT related reserved entries. In subsequent phases when
+ filling in the contents of the reloc entries, PLT related
+ entries are placed by computing their PLT index (0
+ .. reloc_count). While other none PLT relocs are placed
+ at the slot indicated by reloc_count and reloc_count is
+ updated. */
+
+ htab->root.srelplt->reloc_count++;
+
+ /* Mark the DSO in case R_<CLS>_JUMP_SLOT relocs against
+ variant PCS symbols are present. */
+ if (h->other & STO_AARCH64_VARIANT_PCS)
+ htab->variant_pcs = 1;
+
+ }
+ else
+ {
+ h->plt.offset = (bfd_vma) - 1;
+ h->needs_plt = 0;
+ }
+ }
+ else
+ {
+ h->plt.offset = (bfd_vma) - 1;
+ h->needs_plt = 0;
+ }
+
+ eh = (struct elf_aarch64_link_hash_entry *) h;
+ eh->tlsdesc_got_jump_table_offset = (bfd_vma) - 1;
+
+ if (h->got.refcount > 0)
+ {
+ bool dyn;
+ unsigned got_type = elf_aarch64_hash_entry (h)->got_type;
+
+ h->got.offset = (bfd_vma) - 1;
+
+ dyn = htab->root.dynamic_sections_created;
+
+ /* Make sure this symbol is output as a dynamic symbol.
+ Undefined weak syms won't yet be marked as dynamic. */
+ if (dyn && h->dynindx == -1 && !h->forced_local
+ && h->root.type == bfd_link_hash_undefweak)
+ {
+ if (!bfd_elf_link_record_dynamic_symbol (info, h))
+ return false;
+ }
+
+ if (got_type == GOT_UNKNOWN)
+ {
+ }
+ else if (got_type == GOT_NORMAL)
+ {
+ h->got.offset = htab->root.sgot->size;
+ htab->root.sgot->size += GOT_ENTRY_SIZE;
+ if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
+ || h->root.type != bfd_link_hash_undefweak)
+ && (bfd_link_pic (info)
+ || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
+ /* Undefined weak symbol in static PIE resolves to 0 without
+ any dynamic relocations. */
+ && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
+ {
+ htab->root.srelgot->size += RELOC_SIZE (htab);
+ }
+ }
+ else
+ {
+ int indx;
+ if (got_type & GOT_TLSDESC_GD)
+ {
+ eh->tlsdesc_got_jump_table_offset =
+ (htab->root.sgotplt->size
+ - aarch64_compute_jump_table_size (htab));
+ htab->root.sgotplt->size += GOT_ENTRY_SIZE * 2;
+ h->got.offset = (bfd_vma) - 2;
+ }
+
+ if (got_type & GOT_TLS_GD)
+ {
+ h->got.offset = htab->root.sgot->size;
+ htab->root.sgot->size += GOT_ENTRY_SIZE * 2;
+ }
+
+ if (got_type & GOT_TLS_IE)
+ {
+ h->got.offset = htab->root.sgot->size;
+ htab->root.sgot->size += GOT_ENTRY_SIZE;
+ }
+
+ indx = h && h->dynindx != -1 ? h->dynindx : 0;
+ if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
+ || h->root.type != bfd_link_hash_undefweak)
+ && (!bfd_link_executable (info)
+ || indx != 0
+ || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
+ {
+ if (got_type & GOT_TLSDESC_GD)
+ {
+ htab->root.srelplt->size += RELOC_SIZE (htab);
+ /* Note reloc_count not incremented here! We have
+ already adjusted reloc_count for this relocation
+ type. */
+
+ /* TLSDESC PLT is now needed, but not yet determined. */
+ htab->root.tlsdesc_plt = (bfd_vma) - 1;
+ }
+
+ if (got_type & GOT_TLS_GD)
+ htab->root.srelgot->size += RELOC_SIZE (htab) * 2;
+
+ if (got_type & GOT_TLS_IE)
+ htab->root.srelgot->size += RELOC_SIZE (htab);
+ }
+ }
+ }
+ else
+ {
+ h->got.offset = (bfd_vma) - 1;
+ }
+
+ if (h->dyn_relocs == NULL)
+ return true;
+
+ for (p = h->dyn_relocs; p != NULL; p = p->next)
+ if (eh->def_protected)
+ {
+ /* Disallow copy relocations against protected symbol. */
+ asection *s = p->sec->output_section;
+ if (s != NULL && (s->flags & SEC_READONLY) != 0)
+ {
+ info->callbacks->einfo
+ /* xgettext:c-format */
+ (_ ("%F%P: %pB: copy relocation against non-copyable "
+ "protected symbol `%s'\n"),
+ p->sec->owner, h->root.root.string);
+ return false;
+ }
+ }
+
+ /* In the shared -Bsymbolic case, discard space allocated for
+ dynamic pc-relative relocs against symbols which turn out to be
+ defined in regular objects. For the normal shared case, discard
+ space for pc-relative relocs that have become local due to symbol
+ visibility changes. */
+
+ if (bfd_link_pic (info))
+ {
+ /* Relocs that use pc_count are those that appear on a call
+ insn, or certain REL relocs that can generated via assembly.
+ We want calls to protected symbols to resolve directly to the
+ function rather than going via the plt. If people want
+ function pointer comparisons to work as expected then they
+ should avoid writing weird assembly. */
+ if (SYMBOL_CALLS_LOCAL (info, h))
+ {
+ struct elf_dyn_relocs **pp;
+
+ for (pp = &h->dyn_relocs; (p = *pp) != NULL;)
+ {
+ p->count -= p->pc_count;
+ p->pc_count = 0;
+ if (p->count == 0)
+ *pp = p->next;
+ else
+ pp = &p->next;
+ }
+ }
+
+ /* Also discard relocs on undefined weak syms with non-default
+ visibility. */
+ if (h->dyn_relocs != NULL && h->root.type == bfd_link_hash_undefweak)
+ {
+ if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
+ || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
+ h->dyn_relocs = NULL;
+
+ /* Make sure undefined weak symbols are output as a dynamic
+ symbol in PIEs. */
+ else if (h->dynindx == -1
+ && !h->forced_local
+ && h->root.type == bfd_link_hash_undefweak
+ && !bfd_elf_link_record_dynamic_symbol (info, h))
+ return false;
+ }
+
+ }
+ else if (ELIMINATE_COPY_RELOCS)
+ {
+ /* For the non-shared case, discard space for relocs against
+ symbols which turn out to need copy relocs or are not
+ dynamic. */
+
+ if (!h->non_got_ref
+ && ((h->def_dynamic
+ && !h->def_regular)
+ || (htab->root.dynamic_sections_created
+ && (h->root.type == bfd_link_hash_undefweak
+ || h->root.type == bfd_link_hash_undefined))))
+ {
+ /* Make sure this symbol is output as a dynamic symbol.
+ Undefined weak syms won't yet be marked as dynamic. */
+ if (h->dynindx == -1
+ && !h->forced_local
+ && h->root.type == bfd_link_hash_undefweak
+ && !bfd_elf_link_record_dynamic_symbol (info, h))
+ return false;
+
+ /* If that succeeded, we know we'll be keeping all the
+ relocs. */
+ if (h->dynindx != -1)
+ goto keep;
+ }
+
+ h->dyn_relocs = NULL;
+
+ keep:;
+ }
+
+ /* Finally, allocate space. */
+ for (p = h->dyn_relocs; p != NULL; p = p->next)
+ {
+ asection *sreloc;
+
+ sreloc = elf_section_data (p->sec)->sreloc;
+
+ BFD_ASSERT (sreloc != NULL);
+
+ sreloc->size += p->count * RELOC_SIZE (htab);
+ }
+
+ return true;
+}
+
+/* Allocate space in .plt, .got and associated reloc sections for
+ ifunc dynamic relocs. */
+
+static bool
+elfNN_aarch64_allocate_ifunc_dynrelocs (struct elf_link_hash_entry *h,
+ void *inf)
+{
+ struct bfd_link_info *info;
+ struct elf_aarch64_link_hash_table *htab;
+
+ /* An example of a bfd_link_hash_indirect symbol is versioned
+ symbol. For example: __gxx_personality_v0(bfd_link_hash_indirect)
+ -> __gxx_personality_v0(bfd_link_hash_defined)
+
+ There is no need to process bfd_link_hash_indirect symbols here
+ because we will also be presented with the concrete instance of
+ the symbol and elfNN_aarch64_copy_indirect_symbol () will have been
+ called to copy all relevant data from the generic to the concrete
+ symbol instance. */
+ if (h->root.type == bfd_link_hash_indirect)
+ return true;
+
+ if (h->root.type == bfd_link_hash_warning)
+ h = (struct elf_link_hash_entry *) h->root.u.i.link;
+
+ info = (struct bfd_link_info *) inf;
+ htab = elf_aarch64_hash_table (info);
+
+ /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
+ here if it is defined and referenced in a non-shared object. */
+ if (h->type == STT_GNU_IFUNC
+ && h->def_regular)
+ return _bfd_elf_allocate_ifunc_dyn_relocs (info, h,
+ &h->dyn_relocs,
+ htab->plt_entry_size,
+ htab->plt_header_size,
+ GOT_ENTRY_SIZE,
+ false);
+ return true;
+}
+
+/* Allocate space in .plt, .got and associated reloc sections for
+ local ifunc dynamic relocs. */
+
+static int
+elfNN_aarch64_allocate_local_ifunc_dynrelocs (void **slot, void *inf)
+{
+ struct elf_link_hash_entry *h
+ = (struct elf_link_hash_entry *) *slot;
+
+ if (h->type != STT_GNU_IFUNC
+ || !h->def_regular
+ || !h->ref_regular
+ || !h->forced_local
+ || h->root.type != bfd_link_hash_defined)
+ abort ();
+
+ return elfNN_aarch64_allocate_ifunc_dynrelocs (h, inf);
+}
+
+/* This is the most important function of all . Innocuosly named
+ though ! */
+
+static bool
+elfNN_aarch64_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
+ struct bfd_link_info *info)
+{
+ struct elf_aarch64_link_hash_table *htab;
+ bfd *dynobj;
+ asection *s;
+ bool relocs;
+ bfd *ibfd;
+
+ htab = elf_aarch64_hash_table ((info));
+ dynobj = htab->root.dynobj;
+
+ BFD_ASSERT (dynobj != NULL);
+
+ if (htab->root.dynamic_sections_created)
+ {
+ if (bfd_link_executable (info) && !info->nointerp)
+ {
+ s = bfd_get_linker_section (dynobj, ".interp");
+ if (s == NULL)
+ abort ();
+ s->size = sizeof ELF_DYNAMIC_INTERPRETER;
+ s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
+ }
+ }
+
+ /* Set up .got offsets for local syms, and space for local dynamic
+ relocs. */
+ for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
+ {
+ struct elf_aarch64_local_symbol *locals = NULL;
+ Elf_Internal_Shdr *symtab_hdr;
+ asection *srel;
+ unsigned int i;
+
+ if (!is_aarch64_elf (ibfd))
+ continue;
+
+ for (s = ibfd->sections; s != NULL; s = s->next)
+ {
+ struct elf_dyn_relocs *p;
+
+ for (p = (struct elf_dyn_relocs *)
+ (elf_section_data (s)->local_dynrel); p != NULL; p = p->next)
+ {
+ if (!bfd_is_abs_section (p->sec)
+ && bfd_is_abs_section (p->sec->output_section))
+ {
+ /* Input section has been discarded, either because
+ it is a copy of a linkonce section or due to
+ linker script /DISCARD/, so we'll be discarding
+ the relocs too. */
+ }
+ else if (p->count != 0)
+ {
+ srel = elf_section_data (p->sec)->sreloc;
+ srel->size += p->count * RELOC_SIZE (htab);
+ if ((p->sec->output_section->flags & SEC_READONLY) != 0)
+ info->flags |= DF_TEXTREL;
+ }
+ }
+ }
+
+ locals = elf_aarch64_locals (ibfd);
+ if (!locals)
+ continue;
+
+ symtab_hdr = &elf_symtab_hdr (ibfd);
+ srel = htab->root.srelgot;
+ for (i = 0; i < symtab_hdr->sh_info; i++)
+ {
+ locals[i].got_offset = (bfd_vma) - 1;
+ locals[i].tlsdesc_got_jump_table_offset = (bfd_vma) - 1;
+ if (locals[i].got_refcount > 0)
+ {
+ unsigned got_type = locals[i].got_type;
+ if (got_type & GOT_TLSDESC_GD)
+ {
+ locals[i].tlsdesc_got_jump_table_offset =
+ (htab->root.sgotplt->size
+ - aarch64_compute_jump_table_size (htab));
+ htab->root.sgotplt->size += GOT_ENTRY_SIZE * 2;
+ locals[i].got_offset = (bfd_vma) - 2;
+ }
+
+ if (got_type & GOT_TLS_GD)
+ {
+ locals[i].got_offset = htab->root.sgot->size;
+ htab->root.sgot->size += GOT_ENTRY_SIZE * 2;
+ }
+
+ if (got_type & GOT_TLS_IE
+ || got_type & GOT_NORMAL)
+ {
+ locals[i].got_offset = htab->root.sgot->size;
+ htab->root.sgot->size += GOT_ENTRY_SIZE;
+ }
+
+ if (got_type == GOT_UNKNOWN)
+ {
+ }
+
+ if (bfd_link_pic (info))
+ {
+ if (got_type & GOT_TLSDESC_GD)
+ {
+ htab->root.srelplt->size += RELOC_SIZE (htab);
+ /* Note RELOC_COUNT not incremented here! */
+ htab->root.tlsdesc_plt = (bfd_vma) - 1;
+ }
+
+ if (got_type & GOT_TLS_GD)
+ htab->root.srelgot->size += RELOC_SIZE (htab) * 2;
+
+ if (got_type & GOT_TLS_IE
+ || got_type & GOT_NORMAL)
+ htab->root.srelgot->size += RELOC_SIZE (htab);
+ }
+ }
+ else
+ {
+ locals[i].got_refcount = (bfd_vma) - 1;
+ }
+ }
+ }
+
+
+ /* Allocate global sym .plt and .got entries, and space for global
+ sym dynamic relocs. */
+ elf_link_hash_traverse (&htab->root, elfNN_aarch64_allocate_dynrelocs,
+ info);
+
+ /* Allocate global ifunc sym .plt and .got entries, and space for global
+ ifunc sym dynamic relocs. */
+ elf_link_hash_traverse (&htab->root, elfNN_aarch64_allocate_ifunc_dynrelocs,
+ info);
+
+ /* Allocate .plt and .got entries, and space for local ifunc symbols. */
+ htab_traverse (htab->loc_hash_table,
+ elfNN_aarch64_allocate_local_ifunc_dynrelocs,
+ info);
+
+ /* For every jump slot reserved in the sgotplt, reloc_count is
+ incremented. However, when we reserve space for TLS descriptors,
+ it's not incremented, so in order to compute the space reserved
+ for them, it suffices to multiply the reloc count by the jump
+ slot size. */
+
+ if (htab->root.srelplt)
+ htab->sgotplt_jump_table_size = aarch64_compute_jump_table_size (htab);
+
+ if (htab->root.tlsdesc_plt)
+ {
+ if (htab->root.splt->size == 0)
+ htab->root.splt->size += htab->plt_header_size;
+
+ /* If we're not using lazy TLS relocations, don't generate the
+ GOT and PLT entry required. */
+ if ((info->flags & DF_BIND_NOW))
+ htab->root.tlsdesc_plt = 0;
+ else
+ {
+ htab->root.tlsdesc_plt = htab->root.splt->size;
+ htab->root.splt->size += htab->tlsdesc_plt_entry_size;
+
+ htab->root.tlsdesc_got = htab->root.sgot->size;
+ htab->root.sgot->size += GOT_ENTRY_SIZE;
+ }
+ }
+
+ /* Init mapping symbols information to use later to distingush between
+ code and data while scanning for errata. */
+ if (htab->fix_erratum_835769 || htab->fix_erratum_843419)
+ for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
+ {
+ if (!is_aarch64_elf (ibfd))
+ continue;
+ bfd_elfNN_aarch64_init_maps (ibfd);
+ }
+
+ /* We now have determined the sizes of the various dynamic sections.
+ Allocate memory for them. */
+ relocs = false;
+ for (s = dynobj->sections; s != NULL; s = s->next)
+ {
+ if ((s->flags & SEC_LINKER_CREATED) == 0)
+ continue;
+
+ if (s == htab->root.splt
+ || s == htab->root.sgot
+ || s == htab->root.sgotplt
+ || s == htab->root.iplt
+ || s == htab->root.igotplt
+ || s == htab->root.sdynbss
+ || s == htab->root.sdynrelro)
+ {
+ /* Strip this section if we don't need it; see the
+ comment below. */
+ }
+ else if (startswith (bfd_section_name (s), ".rela"))
+ {
+ if (s->size != 0 && s != htab->root.srelplt)
+ relocs = true;
+
+ /* We use the reloc_count field as a counter if we need
+ to copy relocs into the output file. */
+ if (s != htab->root.srelplt)
+ s->reloc_count = 0;
+ }
+ else
+ {
+ /* It's not one of our sections, so don't allocate space. */
+ continue;
+ }
+
+ if (s->size == 0)
+ {
+ /* If we don't need this section, strip it from the
+ output file. This is mostly to handle .rela.bss and
+ .rela.plt. We must create both sections in
+ create_dynamic_sections, because they must be created
+ before the linker maps input sections to output
+ sections. The linker does that before
+ adjust_dynamic_symbol is called, and it is that
+ function which decides whether anything needs to go
+ into these sections. */
+ s->flags |= SEC_EXCLUDE;
+ continue;
+ }
+
+ if ((s->flags & SEC_HAS_CONTENTS) == 0)
+ continue;
+
+ /* Allocate memory for the section contents. We use bfd_zalloc
+ here in case unused entries are not reclaimed before the
+ section's contents are written out. This should not happen,
+ but this way if it does, we get a R_AARCH64_NONE reloc instead
+ of garbage. */
+ s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
+ if (s->contents == NULL)
+ return false;
+ }
+
+ if (htab->root.dynamic_sections_created)
+ {
+ /* Add some entries to the .dynamic section. We fill in the
+ values later, in elfNN_aarch64_finish_dynamic_sections, but we
+ must add the entries now so that we get the correct size for
+ the .dynamic section. The DT_DEBUG entry is filled in by the
+ dynamic linker and used by the debugger. */
+#define add_dynamic_entry(TAG, VAL) \
+ _bfd_elf_add_dynamic_entry (info, TAG, VAL)
+
+ if (!_bfd_elf_add_dynamic_tags (output_bfd, info, relocs))
+ return false;
+
+ if (htab->root.splt->size != 0)
+ {
+ if (htab->variant_pcs
+ && !add_dynamic_entry (DT_AARCH64_VARIANT_PCS, 0))
+ return false;
+
+ if ((elf_aarch64_tdata (output_bfd)->plt_type == PLT_BTI_PAC)
+ && (!add_dynamic_entry (DT_AARCH64_BTI_PLT, 0)
+ || !add_dynamic_entry (DT_AARCH64_PAC_PLT, 0)))
+ return false;
+
+ else if ((elf_aarch64_tdata (output_bfd)->plt_type == PLT_BTI)
+ && !add_dynamic_entry (DT_AARCH64_BTI_PLT, 0))
+ return false;
+
+ else if ((elf_aarch64_tdata (output_bfd)->plt_type == PLT_PAC)
+ && !add_dynamic_entry (DT_AARCH64_PAC_PLT, 0))
+ return false;
+ }
+ }
+#undef add_dynamic_entry
+
+ return true;
+}
+
+static inline void
+elf_aarch64_update_plt_entry (bfd *output_bfd,
+ bfd_reloc_code_real_type r_type,
+ bfd_byte *plt_entry, bfd_vma value)
+{
+ reloc_howto_type *howto = elfNN_aarch64_howto_from_bfd_reloc (r_type);
+
+ /* FIXME: We should check the return value from this function call. */
+ (void) _bfd_aarch64_elf_put_addend (output_bfd, plt_entry, r_type, howto, value);
+}
+
+static void
+elfNN_aarch64_create_small_pltn_entry (struct elf_link_hash_entry *h,
+ struct elf_aarch64_link_hash_table
+ *htab, bfd *output_bfd,
+ struct bfd_link_info *info)
+{
+ bfd_byte *plt_entry;
+ bfd_vma plt_index;
+ bfd_vma got_offset;
+ bfd_vma gotplt_entry_address;
+ bfd_vma plt_entry_address;
+ Elf_Internal_Rela rela;
+ bfd_byte *loc;
+ asection *plt, *gotplt, *relplt;
+
+ /* When building a static executable, use .iplt, .igot.plt and
+ .rela.iplt sections for STT_GNU_IFUNC symbols. */
+ if (htab->root.splt != NULL)
+ {
+ plt = htab->root.splt;
+ gotplt = htab->root.sgotplt;
+ relplt = htab->root.srelplt;
+ }
+ else
+ {
+ plt = htab->root.iplt;
+ gotplt = htab->root.igotplt;
+ relplt = htab->root.irelplt;
+ }
+
+ /* Get the index in the procedure linkage table which
+ corresponds to this symbol. This is the index of this symbol
+ in all the symbols for which we are making plt entries. The
+ first entry in the procedure linkage table is reserved.
+
+ Get the offset into the .got table of the entry that
+ corresponds to this function. Each .got entry is GOT_ENTRY_SIZE
+ bytes. The first three are reserved for the dynamic linker.
+
+ For static executables, we don't reserve anything. */
+
+ if (plt == htab->root.splt)
+ {
+ plt_index = (h->plt.offset - htab->plt_header_size) / htab->plt_entry_size;
+ got_offset = (plt_index + 3) * GOT_ENTRY_SIZE;
+ }
+ else
+ {
+ plt_index = h->plt.offset / htab->plt_entry_size;
+ got_offset = plt_index * GOT_ENTRY_SIZE;
+ }
+
+ plt_entry = plt->contents + h->plt.offset;
+ plt_entry_address = plt->output_section->vma
+ + plt->output_offset + h->plt.offset;
+ gotplt_entry_address = gotplt->output_section->vma +
+ gotplt->output_offset + got_offset;
+
+ /* Copy in the boiler-plate for the PLTn entry. */
+ memcpy (plt_entry, htab->plt_entry, htab->plt_entry_size);
+
+ /* First instruction in BTI enabled PLT stub is a BTI
+ instruction so skip it. */
+ if (elf_aarch64_tdata (output_bfd)->plt_type & PLT_BTI
+ && elf_elfheader (output_bfd)->e_type == ET_EXEC)
+ plt_entry = plt_entry + 4;
+
+ /* Fill in the top 21 bits for this: ADRP x16, PLT_GOT + n * 8.
+ ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff */
+ elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADR_HI21_PCREL,
+ plt_entry,
+ PG (gotplt_entry_address) -
+ PG (plt_entry_address));
+
+ /* Fill in the lo12 bits for the load from the pltgot. */
+ elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_LDSTNN_LO12,
+ plt_entry + 4,
+ PG_OFFSET (gotplt_entry_address));
+
+ /* Fill in the lo12 bits for the add from the pltgot entry. */
+ elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADD_LO12,
+ plt_entry + 8,
+ PG_OFFSET (gotplt_entry_address));
+
+ /* All the GOTPLT Entries are essentially initialized to PLT0. */
+ bfd_put_NN (output_bfd,
+ plt->output_section->vma + plt->output_offset,
+ gotplt->contents + got_offset);
+
+ rela.r_offset = gotplt_entry_address;
+
+ if (h->dynindx == -1
+ || ((bfd_link_executable (info)
+ || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
+ && h->def_regular
+ && h->type == STT_GNU_IFUNC))
+ {
+ /* If an STT_GNU_IFUNC symbol is locally defined, generate
+ R_AARCH64_IRELATIVE instead of R_AARCH64_JUMP_SLOT. */
+ rela.r_info = ELFNN_R_INFO (0, AARCH64_R (IRELATIVE));
+ rela.r_addend = (h->root.u.def.value
+ + h->root.u.def.section->output_section->vma
+ + h->root.u.def.section->output_offset);
+ }
+ else
+ {
+ /* Fill in the entry in the .rela.plt section. */
+ rela.r_info = ELFNN_R_INFO (h->dynindx, AARCH64_R (JUMP_SLOT));
+ rela.r_addend = 0;
+ }
+
+ /* Compute the relocation entry to used based on PLT index and do
+ not adjust reloc_count. The reloc_count has already been adjusted
+ to account for this entry. */
+ loc = relplt->contents + plt_index * RELOC_SIZE (htab);
+ bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc);
+}
+
+/* Size sections even though they're not dynamic. We use it to setup
+ _TLS_MODULE_BASE_, if needed. */
+
+static bool
+elfNN_aarch64_always_size_sections (bfd *output_bfd,
+ struct bfd_link_info *info)
+{
+ asection *tls_sec;
+
+ if (bfd_link_relocatable (info))
+ return true;
+
+ tls_sec = elf_hash_table (info)->tls_sec;
+
+ if (tls_sec)
+ {
+ struct elf_link_hash_entry *tlsbase;
+
+ tlsbase = elf_link_hash_lookup (elf_hash_table (info),
+ "_TLS_MODULE_BASE_", true, true, false);
+
+ if (tlsbase)
+ {
+ struct bfd_link_hash_entry *h = NULL;
+ const struct elf_backend_data *bed =
+ get_elf_backend_data (output_bfd);
+
+ if (!(_bfd_generic_link_add_one_symbol
+ (info, output_bfd, "_TLS_MODULE_BASE_", BSF_LOCAL,
+ tls_sec, 0, NULL, false, bed->collect, &h)))
+ return false;
+
+ tlsbase->type = STT_TLS;
+ tlsbase = (struct elf_link_hash_entry *) h;
+ tlsbase->def_regular = 1;
+ tlsbase->other = STV_HIDDEN;
+ (*bed->elf_backend_hide_symbol) (info, tlsbase, true);
+ }
+ }
+
+ return true;
+}
+
+/* Finish up dynamic symbol handling. We set the contents of various
+ dynamic sections here. */
+
+static bool
+elfNN_aarch64_finish_dynamic_symbol (bfd *output_bfd,
+ struct bfd_link_info *info,
+ struct elf_link_hash_entry *h,
+ Elf_Internal_Sym *sym)
+{
+ struct elf_aarch64_link_hash_table *htab;
+ htab = elf_aarch64_hash_table (info);
+
+ if (h->plt.offset != (bfd_vma) - 1)
+ {
+ asection *plt, *gotplt, *relplt;
+
+ /* This symbol has an entry in the procedure linkage table. Set
+ it up. */
+
+ /* When building a static executable, use .iplt, .igot.plt and
+ .rela.iplt sections for STT_GNU_IFUNC symbols. */
+ if (htab->root.splt != NULL)
+ {
+ plt = htab->root.splt;
+ gotplt = htab->root.sgotplt;
+ relplt = htab->root.srelplt;
+ }
+ else
+ {
+ plt = htab->root.iplt;
+ gotplt = htab->root.igotplt;
+ relplt = htab->root.irelplt;
+ }
+
+ /* This symbol has an entry in the procedure linkage table. Set
+ it up. */
+ if ((h->dynindx == -1
+ && !((h->forced_local || bfd_link_executable (info))
+ && h->def_regular
+ && h->type == STT_GNU_IFUNC))
+ || plt == NULL
+ || gotplt == NULL
+ || relplt == NULL)
+ return false;
+
+ elfNN_aarch64_create_small_pltn_entry (h, htab, output_bfd, info);
+ if (!h->def_regular)
+ {
+ /* Mark the symbol as undefined, rather than as defined in
+ the .plt section. */
+ sym->st_shndx = SHN_UNDEF;
+ /* If the symbol is weak we need to clear the value.
+ Otherwise, the PLT entry would provide a definition for
+ the symbol even if the symbol wasn't defined anywhere,
+ and so the symbol would never be NULL. Leave the value if
+ there were any relocations where pointer equality matters
+ (this is a clue for the dynamic linker, to make function
+ pointer comparisons work between an application and shared
+ library). */
+ if (!h->ref_regular_nonweak || !h->pointer_equality_needed)
+ sym->st_value = 0;
+ }
+ }
+
+ if (h->got.offset != (bfd_vma) - 1
+ && elf_aarch64_hash_entry (h)->got_type == GOT_NORMAL
+ /* Undefined weak symbol in static PIE resolves to 0 without
+ any dynamic relocations. */
+ && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
+ {
+ Elf_Internal_Rela rela;
+ bfd_byte *loc;
+
+ /* This symbol has an entry in the global offset table. Set it
+ up. */
+ if (htab->root.sgot == NULL || htab->root.srelgot == NULL)
+ abort ();
+
+ rela.r_offset = (htab->root.sgot->output_section->vma
+ + htab->root.sgot->output_offset
+ + (h->got.offset & ~(bfd_vma) 1));
+
+ if (h->def_regular
+ && h->type == STT_GNU_IFUNC)
+ {
+ if (bfd_link_pic (info))
+ {
+ /* Generate R_AARCH64_GLOB_DAT. */
+ goto do_glob_dat;
+ }
+ else
+ {
+ asection *plt;
+
+ if (!h->pointer_equality_needed)
+ abort ();
+
+ /* For non-shared object, we can't use .got.plt, which
+ contains the real function address if we need pointer
+ equality. We load the GOT entry with the PLT entry. */
+ plt = htab->root.splt ? htab->root.splt : htab->root.iplt;
+ bfd_put_NN (output_bfd, (plt->output_section->vma
+ + plt->output_offset
+ + h->plt.offset),
+ htab->root.sgot->contents
+ + (h->got.offset & ~(bfd_vma) 1));
+ return true;
+ }
+ }
+ else if (bfd_link_pic (info) && SYMBOL_REFERENCES_LOCAL (info, h))
+ {
+ if (!(h->def_regular || ELF_COMMON_DEF_P (h)))
+ return false;
+
+ BFD_ASSERT ((h->got.offset & 1) != 0);
+ rela.r_info = ELFNN_R_INFO (0, AARCH64_R (RELATIVE));
+ rela.r_addend = (h->root.u.def.value
+ + h->root.u.def.section->output_section->vma
+ + h->root.u.def.section->output_offset);
+ }
+ else
+ {
+ do_glob_dat:
+ BFD_ASSERT ((h->got.offset & 1) == 0);
+ bfd_put_NN (output_bfd, (bfd_vma) 0,
+ htab->root.sgot->contents + h->got.offset);
+ rela.r_info = ELFNN_R_INFO (h->dynindx, AARCH64_R (GLOB_DAT));
+ rela.r_addend = 0;
+ }
+
+ loc = htab->root.srelgot->contents;
+ loc += htab->root.srelgot->reloc_count++ * RELOC_SIZE (htab);
+ bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc);
+ }
+
+ if (h->needs_copy)
+ {
+ Elf_Internal_Rela rela;
+ asection *s;
+ bfd_byte *loc;
+
+ /* This symbol needs a copy reloc. Set it up. */
+ if (h->dynindx == -1
+ || (h->root.type != bfd_link_hash_defined
+ && h->root.type != bfd_link_hash_defweak)
+ || htab->root.srelbss == NULL)
+ abort ();
+
+ rela.r_offset = (h->root.u.def.value
+ + h->root.u.def.section->output_section->vma
+ + h->root.u.def.section->output_offset);
+ rela.r_info = ELFNN_R_INFO (h->dynindx, AARCH64_R (COPY));
+ rela.r_addend = 0;
+ if (h->root.u.def.section == htab->root.sdynrelro)
+ s = htab->root.sreldynrelro;
+ else
+ s = htab->root.srelbss;
+ loc = s->contents + s->reloc_count++ * RELOC_SIZE (htab);
+ bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc);
+ }
+
+ /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. SYM may
+ be NULL for local symbols. */
+ if (sym != NULL
+ && (h == elf_hash_table (info)->hdynamic
+ || h == elf_hash_table (info)->hgot))
+ sym->st_shndx = SHN_ABS;
+
+ return true;
+}
+
+/* Finish up local dynamic symbol handling. We set the contents of
+ various dynamic sections here. */
+
+static int
+elfNN_aarch64_finish_local_dynamic_symbol (void **slot, void *inf)
+{
+ struct elf_link_hash_entry *h
+ = (struct elf_link_hash_entry *) *slot;
+ struct bfd_link_info *info
+ = (struct bfd_link_info *) inf;
+
+ return elfNN_aarch64_finish_dynamic_symbol (info->output_bfd,
+ info, h, NULL);
+}
+
+static void
+elfNN_aarch64_init_small_plt0_entry (bfd *output_bfd ATTRIBUTE_UNUSED,
+ struct elf_aarch64_link_hash_table
+ *htab)
+{
+ /* Fill in PLT0. Fixme:RR Note this doesn't distinguish between
+ small and large plts and at the minute just generates
+ the small PLT. */
+
+ /* PLT0 of the small PLT looks like this in ELF64 -
+ stp x16, x30, [sp, #-16]! // Save the reloc and lr on stack.
+ adrp x16, PLT_GOT + 16 // Get the page base of the GOTPLT
+ ldr x17, [x16, #:lo12:PLT_GOT+16] // Load the address of the
+ // symbol resolver
+ add x16, x16, #:lo12:PLT_GOT+16 // Load the lo12 bits of the
+ // GOTPLT entry for this.
+ br x17
+ PLT0 will be slightly different in ELF32 due to different got entry
+ size. */
+ bfd_vma plt_got_2nd_ent; /* Address of GOT[2]. */
+ bfd_vma plt_base;
+
+
+ memcpy (htab->root.splt->contents, htab->plt0_entry,
+ htab->plt_header_size);
+
+ /* PR 26312: Explicitly set the sh_entsize to 0 so that
+ consumers do not think that the section contains fixed
+ sized objects. */
+ elf_section_data (htab->root.splt->output_section)->this_hdr.sh_entsize = 0;
+
+ plt_got_2nd_ent = (htab->root.sgotplt->output_section->vma
+ + htab->root.sgotplt->output_offset
+ + GOT_ENTRY_SIZE * 2);
+
+ plt_base = htab->root.splt->output_section->vma +
+ htab->root.splt->output_offset;
+
+ /* First instruction in BTI enabled PLT stub is a BTI
+ instruction so skip it. */
+ bfd_byte *plt0_entry = htab->root.splt->contents;
+ if (elf_aarch64_tdata (output_bfd)->plt_type & PLT_BTI)
+ plt0_entry = plt0_entry + 4;
+
+ /* Fill in the top 21 bits for this: ADRP x16, PLT_GOT + n * 8.
+ ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff */
+ elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADR_HI21_PCREL,
+ plt0_entry + 4,
+ PG (plt_got_2nd_ent) - PG (plt_base + 4));
+
+ elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_LDSTNN_LO12,
+ plt0_entry + 8,
+ PG_OFFSET (plt_got_2nd_ent));
+
+ elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADD_LO12,
+ plt0_entry + 12,
+ PG_OFFSET (plt_got_2nd_ent));
+}
+
+static bool
+elfNN_aarch64_finish_dynamic_sections (bfd *output_bfd,
+ struct bfd_link_info *info)
+{
+ struct elf_aarch64_link_hash_table *htab;
+ bfd *dynobj;
+ asection *sdyn;
+
+ htab = elf_aarch64_hash_table (info);
+ dynobj = htab->root.dynobj;
+ sdyn = bfd_get_linker_section (dynobj, ".dynamic");
+
+ if (htab->root.dynamic_sections_created)
+ {
+ ElfNN_External_Dyn *dyncon, *dynconend;
+
+ if (sdyn == NULL || htab->root.sgot == NULL)
+ abort ();
+
+ dyncon = (ElfNN_External_Dyn *) sdyn->contents;
+ dynconend = (ElfNN_External_Dyn *) (sdyn->contents + sdyn->size);
+ for (; dyncon < dynconend; dyncon++)
+ {
+ Elf_Internal_Dyn dyn;
+ asection *s;
+
+ bfd_elfNN_swap_dyn_in (dynobj, dyncon, &dyn);
+
+ switch (dyn.d_tag)
+ {
+ default:
+ continue;
+
+ case DT_PLTGOT:
+ s = htab->root.sgotplt;
+ dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
+ break;
+
+ case DT_JMPREL:
+ s = htab->root.srelplt;
+ dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
+ break;
+
+ case DT_PLTRELSZ:
+ s = htab->root.srelplt;
+ dyn.d_un.d_val = s->size;
+ break;
+
+ case DT_TLSDESC_PLT:
+ s = htab->root.splt;
+ dyn.d_un.d_ptr = s->output_section->vma + s->output_offset
+ + htab->root.tlsdesc_plt;
+ break;
+
+ case DT_TLSDESC_GOT:
+ s = htab->root.sgot;
+ BFD_ASSERT (htab->root.tlsdesc_got != (bfd_vma)-1);
+ dyn.d_un.d_ptr = s->output_section->vma + s->output_offset
+ + htab->root.tlsdesc_got;
+ break;
+ }
+
+ bfd_elfNN_swap_dyn_out (output_bfd, &dyn, dyncon);
+ }
+
+ }
+
+ /* Fill in the special first entry in the procedure linkage table. */
+ if (htab->root.splt && htab->root.splt->size > 0)
+ {
+ elfNN_aarch64_init_small_plt0_entry (output_bfd, htab);
+
+ if (htab->root.tlsdesc_plt && !(info->flags & DF_BIND_NOW))
+ {
+ BFD_ASSERT (htab->root.tlsdesc_got != (bfd_vma)-1);
+ bfd_put_NN (output_bfd, (bfd_vma) 0,
+ htab->root.sgot->contents + htab->root.tlsdesc_got);
+
+ const bfd_byte *entry = elfNN_aarch64_tlsdesc_small_plt_entry;
+ htab->tlsdesc_plt_entry_size = PLT_TLSDESC_ENTRY_SIZE;
+
+ aarch64_plt_type type = elf_aarch64_tdata (output_bfd)->plt_type;
+ if (type == PLT_BTI || type == PLT_BTI_PAC)
+ {
+ entry = elfNN_aarch64_tlsdesc_small_plt_bti_entry;
+ }
+
+ memcpy (htab->root.splt->contents + htab->root.tlsdesc_plt,
+ entry, htab->tlsdesc_plt_entry_size);
+
+ {
+ bfd_vma adrp1_addr =
+ htab->root.splt->output_section->vma
+ + htab->root.splt->output_offset
+ + htab->root.tlsdesc_plt + 4;
+
+ bfd_vma adrp2_addr = adrp1_addr + 4;
+
+ bfd_vma got_addr =
+ htab->root.sgot->output_section->vma
+ + htab->root.sgot->output_offset;
+
+ bfd_vma pltgot_addr =
+ htab->root.sgotplt->output_section->vma
+ + htab->root.sgotplt->output_offset;
+
+ bfd_vma dt_tlsdesc_got = got_addr + htab->root.tlsdesc_got;
+
+ bfd_byte *plt_entry =
+ htab->root.splt->contents + htab->root.tlsdesc_plt;
+
+ /* First instruction in BTI enabled PLT stub is a BTI
+ instruction so skip it. */
+ if (type & PLT_BTI)
+ {
+ plt_entry = plt_entry + 4;
+ adrp1_addr = adrp1_addr + 4;
+ adrp2_addr = adrp2_addr + 4;
+ }
+
+ /* adrp x2, DT_TLSDESC_GOT */
+ elf_aarch64_update_plt_entry (output_bfd,
+ BFD_RELOC_AARCH64_ADR_HI21_PCREL,
+ plt_entry + 4,
+ (PG (dt_tlsdesc_got)
+ - PG (adrp1_addr)));
+
+ /* adrp x3, 0 */
+ elf_aarch64_update_plt_entry (output_bfd,
+ BFD_RELOC_AARCH64_ADR_HI21_PCREL,
+ plt_entry + 8,
+ (PG (pltgot_addr)
+ - PG (adrp2_addr)));
+
+ /* ldr x2, [x2, #0] */
+ elf_aarch64_update_plt_entry (output_bfd,
+ BFD_RELOC_AARCH64_LDSTNN_LO12,
+ plt_entry + 12,
+ PG_OFFSET (dt_tlsdesc_got));
+
+ /* add x3, x3, 0 */
+ elf_aarch64_update_plt_entry (output_bfd,
+ BFD_RELOC_AARCH64_ADD_LO12,
+ plt_entry + 16,
+ PG_OFFSET (pltgot_addr));
+ }
+ }
+ }
+
+ if (htab->root.sgotplt)
+ {
+ if (bfd_is_abs_section (htab->root.sgotplt->output_section))
+ {
+ _bfd_error_handler
+ (_("discarded output section: `%pA'"), htab->root.sgotplt);
+ return false;
+ }
+
+ /* Fill in the first three entries in the global offset table. */
+ if (htab->root.sgotplt->size > 0)
+ {
+ bfd_put_NN (output_bfd, (bfd_vma) 0, htab->root.sgotplt->contents);
+
+ /* Write GOT[1] and GOT[2], needed for the dynamic linker. */
+ bfd_put_NN (output_bfd,
+ (bfd_vma) 0,
+ htab->root.sgotplt->contents + GOT_ENTRY_SIZE);
+ bfd_put_NN (output_bfd,
+ (bfd_vma) 0,
+ htab->root.sgotplt->contents + GOT_ENTRY_SIZE * 2);
+ }
+
+ if (htab->root.sgot)
+ {
+ if (htab->root.sgot->size > 0)
+ {
+ bfd_vma addr =
+ sdyn ? sdyn->output_section->vma + sdyn->output_offset : 0;
+ bfd_put_NN (output_bfd, addr, htab->root.sgot->contents);
+ }
+ }
+
+ elf_section_data (htab->root.sgotplt->output_section)->
+ this_hdr.sh_entsize = GOT_ENTRY_SIZE;
+ }
+
+ if (htab->root.sgot && htab->root.sgot->size > 0)
+ elf_section_data (htab->root.sgot->output_section)->this_hdr.sh_entsize
+ = GOT_ENTRY_SIZE;
+
+ /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */
+ htab_traverse (htab->loc_hash_table,
+ elfNN_aarch64_finish_local_dynamic_symbol,
+ info);
+
+ return true;
+}
+
+/* Check if BTI enabled PLTs are needed. Returns the type needed. */
+static aarch64_plt_type
+get_plt_type (bfd *abfd)
+{
+ aarch64_plt_type ret = PLT_NORMAL;
+ bfd_byte *contents, *extdyn, *extdynend;
+ asection *sec = bfd_get_section_by_name (abfd, ".dynamic");
+ if (!sec
+ || sec->size < sizeof (ElfNN_External_Dyn)
+ || !bfd_malloc_and_get_section (abfd, sec, &contents))
+ return ret;
+ extdyn = contents;
+ extdynend = contents + sec->size - sizeof (ElfNN_External_Dyn);
+ for (; extdyn <= extdynend; extdyn += sizeof (ElfNN_External_Dyn))
+ {
+ Elf_Internal_Dyn dyn;
+ bfd_elfNN_swap_dyn_in (abfd, extdyn, &dyn);
+
+ /* Let's check the processor specific dynamic array tags. */
+ bfd_vma tag = dyn.d_tag;
+ if (tag < DT_LOPROC || tag > DT_HIPROC)
+ continue;
+
+ switch (tag)
+ {
+ case DT_AARCH64_BTI_PLT:
+ ret |= PLT_BTI;
+ break;
+
+ case DT_AARCH64_PAC_PLT:
+ ret |= PLT_PAC;
+ break;
+
+ default: break;
+ }
+ }
+ free (contents);
+ return ret;
+}
+
+static long
+elfNN_aarch64_get_synthetic_symtab (bfd *abfd,
+ long symcount,
+ asymbol **syms,
+ long dynsymcount,
+ asymbol **dynsyms,
+ asymbol **ret)
+{
+ elf_aarch64_tdata (abfd)->plt_type = get_plt_type (abfd);
+ return _bfd_elf_get_synthetic_symtab (abfd, symcount, syms,
+ dynsymcount, dynsyms, ret);
+}
+
+/* Return address for Ith PLT stub in section PLT, for relocation REL
+ or (bfd_vma) -1 if it should not be included. */
+
+static bfd_vma
+elfNN_aarch64_plt_sym_val (bfd_vma i, const asection *plt,
+ const arelent *rel ATTRIBUTE_UNUSED)
+{
+ size_t plt0_size = PLT_ENTRY_SIZE;
+ size_t pltn_size = PLT_SMALL_ENTRY_SIZE;
+
+ if (elf_aarch64_tdata (plt->owner)->plt_type == PLT_BTI_PAC)
+ {
+ if (elf_elfheader (plt->owner)->e_type == ET_EXEC)
+ pltn_size = PLT_BTI_PAC_SMALL_ENTRY_SIZE;
+ else
+ pltn_size = PLT_PAC_SMALL_ENTRY_SIZE;
+ }
+ else if (elf_aarch64_tdata (plt->owner)->plt_type == PLT_BTI)
+ {
+ if (elf_elfheader (plt->owner)->e_type == ET_EXEC)
+ pltn_size = PLT_BTI_SMALL_ENTRY_SIZE;
+ }
+ else if (elf_aarch64_tdata (plt->owner)->plt_type == PLT_PAC)
+ {
+ pltn_size = PLT_PAC_SMALL_ENTRY_SIZE;
+ }
+
+ return plt->vma + plt0_size + i * pltn_size;
+}
+
+/* Returns TRUE if NAME is an AArch64 mapping symbol.
+ The ARM ELF standard defines $x (for A64 code) and $d (for data).
+ It also allows a period initiated suffix to be added to the symbol, ie:
+ "$[adtx]\.[:sym_char]+". */
+
+static bool
+is_aarch64_mapping_symbol (const char * name)
+{
+ return name != NULL /* Paranoia. */
+ && name[0] == '$' /* Note: if objcopy --prefix-symbols has been used then
+ the mapping symbols could have acquired a prefix.
+ We do not support this here, since such symbols no
+ longer conform to the ARM ELF ABI. */
+ && (name[1] == 'd' || name[1] == 'x')
+ && (name[2] == 0 || name[2] == '.');
+ /* FIXME: Strictly speaking the symbol is only a valid mapping symbol if
+ any characters that follow the period are legal characters for the body
+ of a symbol's name. For now we just assume that this is the case. */
+}
+
+/* Make sure that mapping symbols in object files are not removed via the
+ "strip --strip-unneeded" tool. These symbols might needed in order to
+ correctly generate linked files. Once an object file has been linked,
+ it should be safe to remove them. */
+
+static void
+elfNN_aarch64_backend_symbol_processing (bfd *abfd, asymbol *sym)
+{
+ if (((abfd->flags & (EXEC_P | DYNAMIC)) == 0)
+ && sym->section != bfd_abs_section_ptr
+ && is_aarch64_mapping_symbol (sym->name))
+ sym->flags |= BSF_KEEP;
+}
+
+/* Implement elf_backend_setup_gnu_properties for AArch64. It serves as a
+ wrapper function for _bfd_aarch64_elf_link_setup_gnu_properties to account
+ for the effect of GNU properties of the output_bfd. */
+static bfd *
+elfNN_aarch64_link_setup_gnu_properties (struct bfd_link_info *info)
+{
+ uint32_t prop = elf_aarch64_tdata (info->output_bfd)->gnu_and_prop;
+ bfd *pbfd = _bfd_aarch64_elf_link_setup_gnu_properties (info, &prop);
+ elf_aarch64_tdata (info->output_bfd)->gnu_and_prop = prop;
+ elf_aarch64_tdata (info->output_bfd)->plt_type
+ |= (prop & GNU_PROPERTY_AARCH64_FEATURE_1_BTI) ? PLT_BTI : 0;
+ setup_plt_values (info, elf_aarch64_tdata (info->output_bfd)->plt_type);
+ return pbfd;
+}
+
+/* Implement elf_backend_merge_gnu_properties for AArch64. It serves as a
+ wrapper function for _bfd_aarch64_elf_merge_gnu_properties to account
+ for the effect of GNU properties of the output_bfd. */
+static bool
+elfNN_aarch64_merge_gnu_properties (struct bfd_link_info *info,
+ bfd *abfd, bfd *bbfd,
+ elf_property *aprop,
+ elf_property *bprop)
+{
+ uint32_t prop
+ = elf_aarch64_tdata (info->output_bfd)->gnu_and_prop;
+
+ /* If output has been marked with BTI using command line argument, give out
+ warning if necessary. */
+ /* Properties are merged per type, hence only check for warnings when merging
+ GNU_PROPERTY_AARCH64_FEATURE_1_AND. */
+ if (((aprop && aprop->pr_type == GNU_PROPERTY_AARCH64_FEATURE_1_AND)
+ || (bprop && bprop->pr_type == GNU_PROPERTY_AARCH64_FEATURE_1_AND))
+ && (prop & GNU_PROPERTY_AARCH64_FEATURE_1_BTI)
+ && (!elf_aarch64_tdata (info->output_bfd)->no_bti_warn))
+ {
+ if ((aprop && !(aprop->u.number & GNU_PROPERTY_AARCH64_FEATURE_1_BTI))
+ || !aprop)
+ {
+ _bfd_error_handler (_("%pB: warning: BTI turned on by -z force-bti when "
+ "all inputs do not have BTI in NOTE section."),
+ abfd);
+ }
+ if ((bprop && !(bprop->u.number & GNU_PROPERTY_AARCH64_FEATURE_1_BTI))
+ || !bprop)
+ {
+ _bfd_error_handler (_("%pB: warning: BTI turned on by -z force-bti when "
+ "all inputs do not have BTI in NOTE section."),
+ bbfd);
+ }
+ }
+
+ return _bfd_aarch64_elf_merge_gnu_properties (info, abfd, aprop,
+ bprop, prop);
+}
+
+/* We use this so we can override certain functions
+ (though currently we don't). */
+
+const struct elf_size_info elfNN_aarch64_size_info =
+{
+ sizeof (ElfNN_External_Ehdr),
+ sizeof (ElfNN_External_Phdr),
+ sizeof (ElfNN_External_Shdr),
+ sizeof (ElfNN_External_Rel),
+ sizeof (ElfNN_External_Rela),
+ sizeof (ElfNN_External_Sym),
+ sizeof (ElfNN_External_Dyn),
+ sizeof (Elf_External_Note),
+ 4, /* Hash table entry size. */
+ 1, /* Internal relocs per external relocs. */
+ ARCH_SIZE, /* Arch size. */
+ LOG_FILE_ALIGN, /* Log_file_align. */
+ ELFCLASSNN, EV_CURRENT,
+ bfd_elfNN_write_out_phdrs,
+ bfd_elfNN_write_shdrs_and_ehdr,
+ bfd_elfNN_checksum_contents,
+ bfd_elfNN_write_relocs,
+ bfd_elfNN_swap_symbol_in,
+ bfd_elfNN_swap_symbol_out,
+ bfd_elfNN_slurp_reloc_table,
+ bfd_elfNN_slurp_symbol_table,
+ bfd_elfNN_swap_dyn_in,
+ bfd_elfNN_swap_dyn_out,
+ bfd_elfNN_swap_reloc_in,
+ bfd_elfNN_swap_reloc_out,
+ bfd_elfNN_swap_reloca_in,
+ bfd_elfNN_swap_reloca_out
+};
+
+#define ELF_ARCH bfd_arch_aarch64
+#define ELF_MACHINE_CODE EM_AARCH64
+#define ELF_MAXPAGESIZE 0x10000
+#define ELF_COMMONPAGESIZE 0x1000
+
+#define bfd_elfNN_close_and_cleanup \
+ elfNN_aarch64_close_and_cleanup
+
+#define bfd_elfNN_bfd_free_cached_info \
+ elfNN_aarch64_bfd_free_cached_info
+
+#define bfd_elfNN_bfd_is_target_special_symbol \
+ elfNN_aarch64_is_target_special_symbol
+
+#define bfd_elfNN_bfd_link_hash_table_create \
+ elfNN_aarch64_link_hash_table_create
+
+#define bfd_elfNN_bfd_merge_private_bfd_data \
+ elfNN_aarch64_merge_private_bfd_data
+
+#define bfd_elfNN_bfd_print_private_bfd_data \
+ elfNN_aarch64_print_private_bfd_data
+
+#define bfd_elfNN_bfd_reloc_type_lookup \
+ elfNN_aarch64_reloc_type_lookup
+
+#define bfd_elfNN_bfd_reloc_name_lookup \
+ elfNN_aarch64_reloc_name_lookup
+
+#define bfd_elfNN_bfd_set_private_flags \
+ elfNN_aarch64_set_private_flags
+
+#define bfd_elfNN_find_inliner_info \
+ elfNN_aarch64_find_inliner_info
+
+#define bfd_elfNN_get_synthetic_symtab \
+ elfNN_aarch64_get_synthetic_symtab
+
+#define bfd_elfNN_mkobject \
+ elfNN_aarch64_mkobject
+
+#define bfd_elfNN_new_section_hook \
+ elfNN_aarch64_new_section_hook
+
+#define elf_backend_adjust_dynamic_symbol \
+ elfNN_aarch64_adjust_dynamic_symbol
+
+#define elf_backend_always_size_sections \
+ elfNN_aarch64_always_size_sections
+
+#define elf_backend_check_relocs \
+ elfNN_aarch64_check_relocs
+
+#define elf_backend_copy_indirect_symbol \
+ elfNN_aarch64_copy_indirect_symbol
+
+#define elf_backend_merge_symbol_attribute \
+ elfNN_aarch64_merge_symbol_attribute
+
+/* Create .dynbss, and .rela.bss sections in DYNOBJ, and set up shortcuts
+ to them in our hash. */
+#define elf_backend_create_dynamic_sections \
+ elfNN_aarch64_create_dynamic_sections
+
+#define elf_backend_init_index_section \
+ _bfd_elf_init_2_index_sections
+
+#define elf_backend_finish_dynamic_sections \
+ elfNN_aarch64_finish_dynamic_sections
+
+#define elf_backend_finish_dynamic_symbol \
+ elfNN_aarch64_finish_dynamic_symbol
+
+#define elf_backend_object_p \
+ elfNN_aarch64_object_p
+
+#define elf_backend_output_arch_local_syms \
+ elfNN_aarch64_output_arch_local_syms
+
+#define elf_backend_maybe_function_sym \
+ elfNN_aarch64_maybe_function_sym
+
+#define elf_backend_plt_sym_val \
+ elfNN_aarch64_plt_sym_val
+
+#define elf_backend_init_file_header \
+ elfNN_aarch64_init_file_header
+
+#define elf_backend_relocate_section \
+ elfNN_aarch64_relocate_section
+
+#define elf_backend_reloc_type_class \
+ elfNN_aarch64_reloc_type_class
+
+#define elf_backend_section_from_shdr \
+ elfNN_aarch64_section_from_shdr
+
+#define elf_backend_section_from_phdr \
+ elfNN_aarch64_section_from_phdr
+
+#define elf_backend_modify_headers \
+ elfNN_aarch64_modify_headers
+
+#define elf_backend_size_dynamic_sections \
+ elfNN_aarch64_size_dynamic_sections
+
+#define elf_backend_size_info \
+ elfNN_aarch64_size_info
+
+#define elf_backend_write_section \
+ elfNN_aarch64_write_section
+
+#define elf_backend_symbol_processing \
+ elfNN_aarch64_backend_symbol_processing
+
+#define elf_backend_setup_gnu_properties \
+ elfNN_aarch64_link_setup_gnu_properties
+
+#define elf_backend_merge_gnu_properties \
+ elfNN_aarch64_merge_gnu_properties
+
+#define elf_backend_can_refcount 1
+#define elf_backend_can_gc_sections 1
+#define elf_backend_plt_readonly 1
+#define elf_backend_want_got_plt 1
+#define elf_backend_want_plt_sym 0
+#define elf_backend_want_dynrelro 1
+#define elf_backend_may_use_rel_p 0
+#define elf_backend_may_use_rela_p 1
+#define elf_backend_default_use_rela_p 1
+#define elf_backend_rela_normal 1
+#define elf_backend_dtrel_excludes_plt 1
+#define elf_backend_got_header_size (GOT_ENTRY_SIZE * 3)
+#define elf_backend_default_execstack 0
+#define elf_backend_extern_protected_data 0
+#define elf_backend_hash_symbol elf_aarch64_hash_symbol
+
+#undef elf_backend_obj_attrs_section
+#define elf_backend_obj_attrs_section ".ARM.attributes"
+
+#include "elfNN-target.h"
+
+/* CloudABI support. */
+
+#undef TARGET_LITTLE_SYM
+#define TARGET_LITTLE_SYM aarch64_elfNN_le_cloudabi_vec
+#undef TARGET_LITTLE_NAME
+#define TARGET_LITTLE_NAME "elfNN-littleaarch64-cloudabi"
+#undef TARGET_BIG_SYM
+#define TARGET_BIG_SYM aarch64_elfNN_be_cloudabi_vec
+#undef TARGET_BIG_NAME
+#define TARGET_BIG_NAME "elfNN-bigaarch64-cloudabi"
+
+#undef ELF_OSABI
+#define ELF_OSABI ELFOSABI_CLOUDABI
+
+#undef elfNN_bed
+#define elfNN_bed elfNN_aarch64_cloudabi_bed
+
+#include "elfNN-target.h"
Radix cross Linux Toolchains
Toolchains for all supported by Radix cross Linux devices
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