#include "elf-bfd.h"
#include "bfdlink.h"
#include "elf/aarch64.h"
+#include "elfxx-aarch64.h"
#define ARCH_SIZE NN
#define LOG_FILE_ALIGN 2
#endif
-static bfd_reloc_status_type
-bfd_elf_aarch64_put_addend (bfd *abfd,
- bfd_byte *address,
- reloc_howto_type *howto, bfd_signed_vma addend);
-
#define IS_AARCH64_TLS_RELOC(R_TYPE) \
((R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21 \
|| (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC \
#define PLT_SMALL_ENTRY_SIZE (16)
#define PLT_TLSDESC_ENTRY_SIZE (32)
-/* Take the PAGE component of an address or offset. */
-#define PG(x) ((x) & ~ (bfd_vma) 0xfff)
-#define PG_OFFSET(x) ((x) & (bfd_vma) 0xfff)
-
/* Encoding of the nop instruction */
#define INSN_NOP 0xd503201f
{
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 */
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. */
};
0xe2, 0x0f, 0xbf, 0xa9, /* stp x2, x3, [sp, #-16]! */
0x02, 0x00, 0x00, 0x90, /* adrp x2, 0 */
0x03, 0x00, 0x00, 0x90, /* adrp x3, 0 */
- 0x42, 0x08, 0x40, 0xF9, /* ldr x2, [x2, #0] */
+#if ARCH_SIZE == 64
+ 0x42, 0x00, 0x40, 0xf9, /* ldr x2, [x2, #0] */
0x63, 0x00, 0x00, 0x91, /* add x3, x3, 0 */
- 0x40, 0x00, 0x1F, 0xD6, /* br x2 */
+#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 */
};
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;
}
return NULL;
}
-/* Support for core dump NOTE sections. */
-
-static bfd_boolean
-elf64_aarch64_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
-{
- int offset;
- size_t size;
-
- switch (note->descsz)
- {
- default:
- return FALSE;
-
- case 408: /* sizeof(struct elf_prstatus) on Linux/arm64. */
- /* pr_cursig */
- elf_tdata (abfd)->core->signal
- = bfd_get_16 (abfd, note->descdata + 12);
-
- /* pr_pid */
- elf_tdata (abfd)->core->lwpid
- = bfd_get_32 (abfd, note->descdata + 32);
-
- /* pr_reg */
- offset = 112;
- size = 272;
-
- break;
- }
-
- /* Make a ".reg/999" section. */
- return _bfd_elfcore_make_pseudosection (abfd, ".reg",
- size, note->descpos + offset);
-}
-
#define TARGET_LITTLE_SYM bfd_elfNN_littleaarch64_vec
#define TARGET_LITTLE_NAME "elfNN-littleaarch64"
#define TARGET_BIG_SYM bfd_elfNN_bigaarch64_vec
#define TARGET_BIG_NAME "elfNN-bigaarch64"
-#define elf_backend_grok_prstatus elf64_aarch64_grok_prstatus
-
-typedef unsigned long int insn32;
-
/* 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
bfd_vma dt_tlsdesc_got;
};
-
-/* Return non-zero if the indicated VALUE has overflowed the maximum
- range expressible by a unsigned number with the indicated number of
- BITS. */
-
-static bfd_reloc_status_type
-aarch64_unsigned_overflow (bfd_vma value, unsigned int bits)
-{
- bfd_vma lim;
- if (bits >= sizeof (bfd_vma) * 8)
- return bfd_reloc_ok;
- lim = (bfd_vma) 1 << bits;
- if (value >= lim)
- return bfd_reloc_overflow;
- return bfd_reloc_ok;
-}
-
-
-/* Return non-zero if the indicated VALUE has overflowed the maximum
- range expressible by an signed number with the indicated number of
- BITS. */
-
-static bfd_reloc_status_type
-aarch64_signed_overflow (bfd_vma value, unsigned int bits)
-{
- bfd_signed_vma svalue = (bfd_signed_vma) value;
- bfd_signed_vma lim;
-
- if (bits >= sizeof (bfd_vma) * 8)
- return bfd_reloc_ok;
- lim = (bfd_signed_vma) 1 << (bits - 1);
- if (svalue < -lim || svalue >= lim)
- return bfd_reloc_overflow;
- return bfd_reloc_ok;
-}
-
/* Create an entry in an AArch64 ELF linker hash table. */
static struct bfd_hash_entry *
_bfd_elf_link_hash_table_free (hash);
}
-static bfd_vma
-aarch64_resolve_relocation (unsigned int r_type, bfd_vma place, bfd_vma value,
- bfd_vma addend, bfd_boolean weak_undef_p)
-{
- switch (elfNN_aarch64_bfd_reloc_from_type (r_type))
- {
- case BFD_RELOC_AARCH64_TLSDESC_CALL:
- case BFD_RELOC_AARCH64_NONE:
- break;
-
- case BFD_RELOC_AARCH64_ADR_LO21_PCREL:
- case BFD_RELOC_AARCH64_BRANCH19:
- case BFD_RELOC_AARCH64_LD_LO19_PCREL:
- case BFD_RELOC_AARCH64_16_PCREL:
- case BFD_RELOC_AARCH64_32_PCREL:
- case BFD_RELOC_AARCH64_64_PCREL:
- case BFD_RELOC_AARCH64_TSTBR14:
- if (weak_undef_p)
- value = place;
- value = value + addend - place;
- break;
-
- case BFD_RELOC_AARCH64_CALL26:
- case BFD_RELOC_AARCH64_JUMP26:
- value = value + addend - place;
- break;
-
- case BFD_RELOC_AARCH64_16:
- case BFD_RELOC_AARCH64_32:
- case BFD_RELOC_AARCH64_MOVW_G0_S:
- case BFD_RELOC_AARCH64_MOVW_G1_S:
- case BFD_RELOC_AARCH64_MOVW_G2_S:
- case BFD_RELOC_AARCH64_MOVW_G0:
- case BFD_RELOC_AARCH64_MOVW_G0_NC:
- case BFD_RELOC_AARCH64_MOVW_G1:
- case BFD_RELOC_AARCH64_MOVW_G1_NC:
- case BFD_RELOC_AARCH64_MOVW_G2:
- case BFD_RELOC_AARCH64_MOVW_G2_NC:
- case BFD_RELOC_AARCH64_MOVW_G3:
- value = value + addend;
- break;
-
- case BFD_RELOC_AARCH64_ADR_HI21_PCREL:
- case BFD_RELOC_AARCH64_ADR_HI21_NC_PCREL:
- if (weak_undef_p)
- value = PG (place);
- value = PG (value + addend) - PG (place);
- break;
-
- case BFD_RELOC_AARCH64_GOT_LD_PREL19:
- value = value + addend - place;
- break;
-
- case BFD_RELOC_AARCH64_ADR_GOT_PAGE:
- case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21:
- case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21:
- case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21:
- value = PG (value + addend) - PG (place);
- break;
-
- case BFD_RELOC_AARCH64_ADD_LO12:
- case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC:
- case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC:
- case BFD_RELOC_AARCH64_LDST8_LO12:
- case BFD_RELOC_AARCH64_LDST16_LO12:
- case BFD_RELOC_AARCH64_LDST32_LO12:
- case BFD_RELOC_AARCH64_LDST64_LO12:
- case BFD_RELOC_AARCH64_LDST128_LO12:
- case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC:
- case BFD_RELOC_AARCH64_TLSDESC_ADD:
- case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12_NC:
- case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC:
- case BFD_RELOC_AARCH64_TLSDESC_LDR:
- case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC:
- case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC:
- case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC:
- case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12:
- case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12_NC:
- value = PG_OFFSET (value + addend);
- break;
-
- case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1:
- case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC:
- value = (value + addend) & (bfd_vma) 0xffff0000;
- break;
- case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12:
- value = (value + addend) & (bfd_vma) 0xfff000;
- break;
-
- case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0:
- case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC:
- value = (value + addend) & (bfd_vma) 0xffff;
- break;
-
- case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2:
- value = (value + addend) & ~(bfd_vma) 0xffffffff;
- value -= place & ~(bfd_vma) 0xffffffff;
- break;
-
- default:
- break;
- }
-
- return value;
-}
-
static bfd_boolean
aarch64_relocate (unsigned int r_type, bfd *input_bfd, asection *input_section,
bfd_vma offset, bfd_vma value)
howto = elfNN_aarch64_howto_from_type (r_type);
place = (input_section->output_section->vma + input_section->output_offset
+ offset);
- value = aarch64_resolve_relocation (r_type, place, value, 0, FALSE);
- return bfd_elf_aarch64_put_addend (input_bfd,
- input_section->contents + offset,
- howto, value);
+
+ r_type = elfNN_aarch64_bfd_reloc_from_type (r_type);
+ value = _bfd_aarch64_elf_resolve_relocation (r_type, place, value, 0, FALSE);
+ return _bfd_aarch64_elf_put_addend (input_bfd,
+ input_section->contents + offset, r_type,
+ howto, value);
}
static enum elf_aarch64_stub_type
elf_aarch64_tdata (output_bfd)->no_wchar_size_warning = no_wchar_warn;
}
-#define MASK(n) ((1u << (n)) - 1)
-
-/* Decode the 26-bit offset of unconditional branch. */
-static inline uint32_t
-decode_branch_ofs_26 (uint32_t insn)
-{
- return insn & MASK (26);
-}
-
-/* Decode the 19-bit offset of conditional branch and compare & branch. */
-static inline uint32_t
-decode_cond_branch_ofs_19 (uint32_t insn)
-{
- return (insn >> 5) & MASK (19);
-}
-
-/* Decode the 19-bit offset of load literal. */
-static inline uint32_t
-decode_ld_lit_ofs_19 (uint32_t insn)
-{
- return (insn >> 5) & MASK (19);
-}
-
-/* Decode the 14-bit offset of test & branch. */
-static inline uint32_t
-decode_tst_branch_ofs_14 (uint32_t insn)
-{
- return (insn >> 5) & MASK (14);
-}
-
-/* Decode the 16-bit imm of move wide. */
-static inline uint32_t
-decode_movw_imm (uint32_t insn)
-{
- return (insn >> 5) & MASK (16);
-}
-
-/* Decode the 21-bit imm of adr. */
-static inline uint32_t
-decode_adr_imm (uint32_t insn)
-{
- return ((insn >> 29) & MASK (2)) | ((insn >> 3) & (MASK (19) << 2));
-}
-
-/* Decode the 12-bit imm of add immediate. */
-static inline uint32_t
-decode_add_imm (uint32_t insn)
-{
- return (insn >> 10) & MASK (12);
-}
-
-
-/* Encode the 26-bit offset of unconditional branch. */
-static inline uint32_t
-reencode_branch_ofs_26 (uint32_t insn, uint32_t ofs)
-{
- return (insn & ~MASK (26)) | (ofs & MASK (26));
-}
-
-/* Encode the 19-bit offset of conditional branch and compare & branch. */
-static inline uint32_t
-reencode_cond_branch_ofs_19 (uint32_t insn, uint32_t ofs)
-{
- return (insn & ~(MASK (19) << 5)) | ((ofs & MASK (19)) << 5);
-}
-
-/* Decode the 19-bit offset of load literal. */
-static inline uint32_t
-reencode_ld_lit_ofs_19 (uint32_t insn, uint32_t ofs)
-{
- return (insn & ~(MASK (19) << 5)) | ((ofs & MASK (19)) << 5);
-}
-
-/* Encode the 14-bit offset of test & branch. */
-static inline uint32_t
-reencode_tst_branch_ofs_14 (uint32_t insn, uint32_t ofs)
-{
- return (insn & ~(MASK (14) << 5)) | ((ofs & MASK (14)) << 5);
-}
-
-/* Reencode the imm field of move wide. */
-static inline uint32_t
-reencode_movw_imm (uint32_t insn, uint32_t imm)
-{
- return (insn & ~(MASK (16) << 5)) | ((imm & MASK (16)) << 5);
-}
-
-/* Reencode the imm field of adr. */
-static inline uint32_t
-reencode_adr_imm (uint32_t insn, uint32_t imm)
-{
- return (insn & ~((MASK (2) << 29) | (MASK (19) << 5)))
- | ((imm & MASK (2)) << 29) | ((imm & (MASK (19) << 2)) << 3);
-}
-
-/* Reencode the imm field of ld/st pos immediate. */
-static inline uint32_t
-reencode_ldst_pos_imm (uint32_t insn, uint32_t imm)
-{
- return (insn & ~(MASK (12) << 10)) | ((imm & MASK (12)) << 10);
-}
-
-/* Reencode the imm field of add immediate. */
-static inline uint32_t
-reencode_add_imm (uint32_t insn, uint32_t imm)
-{
- return (insn & ~(MASK (12) << 10)) | ((imm & MASK (12)) << 10);
-}
-
-/* Reencode mov[zn] to movz. */
-static inline uint32_t
-reencode_movzn_to_movz (uint32_t opcode)
-{
- return opcode | (1 << 30);
-}
-
-/* Reencode mov[zn] to movn. */
-static inline uint32_t
-reencode_movzn_to_movn (uint32_t opcode)
-{
- return opcode & ~(1 << 30);
-}
-
-/* Insert the addend/value into the instruction or data object being
- relocated. */
-static bfd_reloc_status_type
-bfd_elf_aarch64_put_addend (bfd *abfd,
- bfd_byte *address,
- reloc_howto_type *howto, bfd_signed_vma addend)
-{
- bfd_reloc_status_type status = bfd_reloc_ok;
- bfd_signed_vma old_addend = addend;
- bfd_vma contents;
- int size;
-
- size = bfd_get_reloc_size (howto);
- switch (size)
- {
- case 2:
- contents = bfd_get_16 (abfd, address);
- break;
- case 4:
- if (howto->src_mask != 0xffffffff)
- /* Must be 32-bit instruction, always little-endian. */
- contents = bfd_getl32 (address);
- else
- /* Must be 32-bit data (endianness dependent). */
- contents = bfd_get_32 (abfd, address);
- break;
- case 8:
- contents = bfd_get_64 (abfd, address);
- break;
- default:
- abort ();
- }
-
- switch (howto->complain_on_overflow)
- {
- case complain_overflow_dont:
- break;
- case complain_overflow_signed:
- status = aarch64_signed_overflow (addend,
- howto->bitsize + howto->rightshift);
- break;
- case complain_overflow_unsigned:
- status = aarch64_unsigned_overflow (addend,
- howto->bitsize + howto->rightshift);
- break;
- case complain_overflow_bitfield:
- default:
- abort ();
- }
-
- addend >>= howto->rightshift;
-
- switch (elfNN_aarch64_bfd_reloc_from_howto (howto))
- {
- case BFD_RELOC_AARCH64_JUMP26:
- case BFD_RELOC_AARCH64_CALL26:
- contents = reencode_branch_ofs_26 (contents, addend);
- break;
-
- case BFD_RELOC_AARCH64_BRANCH19:
- contents = reencode_cond_branch_ofs_19 (contents, addend);
- break;
-
- case BFD_RELOC_AARCH64_TSTBR14:
- contents = reencode_tst_branch_ofs_14 (contents, addend);
- break;
-
- case BFD_RELOC_AARCH64_LD_LO19_PCREL:
- case BFD_RELOC_AARCH64_GOT_LD_PREL19:
- if (old_addend & ((1 << howto->rightshift) - 1))
- return bfd_reloc_overflow;
- contents = reencode_ld_lit_ofs_19 (contents, addend);
- break;
-
- case BFD_RELOC_AARCH64_TLSDESC_CALL:
- break;
-
- case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21:
- case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21:
- case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21:
- case BFD_RELOC_AARCH64_ADR_GOT_PAGE:
- case BFD_RELOC_AARCH64_ADR_LO21_PCREL:
- case BFD_RELOC_AARCH64_ADR_HI21_PCREL:
- case BFD_RELOC_AARCH64_ADR_HI21_NC_PCREL:
- contents = reencode_adr_imm (contents, addend);
- break;
-
- case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC:
- case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12:
- case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12:
- case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12_NC:
- case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC:
- case BFD_RELOC_AARCH64_ADD_LO12:
- /* Corresponds to: add rd, rn, #uimm12 to provide the low order
- 12 bits of the page offset following
- BFD_RELOC_AARCH64_ADR_HI21_PCREL which computes the
- (pc-relative) page base. */
- contents = reencode_add_imm (contents, addend);
- break;
-
- case BFD_RELOC_AARCH64_LDST8_LO12:
- case BFD_RELOC_AARCH64_LDST16_LO12:
- case BFD_RELOC_AARCH64_LDST32_LO12:
- case BFD_RELOC_AARCH64_LDST64_LO12:
- case BFD_RELOC_AARCH64_LDST128_LO12:
- case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12_NC:
- case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC:
- case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC:
- case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC:
- case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC:
- case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC:
- if (old_addend & ((1 << howto->rightshift) - 1))
- return bfd_reloc_overflow;
- /* Used for ldr*|str* rt, [rn, #uimm12] to provide the low order
- 12 bits of the page offset following BFD_RELOC_AARCH64_ADR_HI21_PCREL
- which computes the (pc-relative) page base. */
- contents = reencode_ldst_pos_imm (contents, addend);
- break;
-
- /* Group relocations to create high bits 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. */
-
- case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2:
- case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1:
- case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC:
- case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0:
- case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC:
- case BFD_RELOC_AARCH64_MOVW_G0_S:
- case BFD_RELOC_AARCH64_MOVW_G1_S:
- case BFD_RELOC_AARCH64_MOVW_G2_S:
- /* NOTE: We can only come here with movz or movn. */
- if (addend < 0)
- {
- /* Force use of MOVN. */
- addend = ~addend;
- contents = reencode_movzn_to_movn (contents);
- }
- else
- {
- /* Force use of MOVZ. */
- contents = reencode_movzn_to_movz (contents);
- }
- /* fall through */
-
- /* Group relocations to create a 16, 32, 48 or 64 bit unsigned
- data or abs address inline. */
-
- case BFD_RELOC_AARCH64_MOVW_G0:
- case BFD_RELOC_AARCH64_MOVW_G0_NC:
- case BFD_RELOC_AARCH64_MOVW_G1:
- case BFD_RELOC_AARCH64_MOVW_G1_NC:
- case BFD_RELOC_AARCH64_MOVW_G2:
- case BFD_RELOC_AARCH64_MOVW_G2_NC:
- case BFD_RELOC_AARCH64_MOVW_G3:
- contents = reencode_movw_imm (contents, addend);
- break;
-
- default:
- /* Repack simple data */
- if (howto->dst_mask & (howto->dst_mask + 1))
- return bfd_reloc_notsupported;
-
- contents = ((contents & ~howto->dst_mask) | (addend & howto->dst_mask));
- break;
- }
-
- switch (size)
- {
- case 2:
- bfd_put_16 (abfd, contents, address);
- break;
- case 4:
- if (howto->dst_mask != 0xffffffff)
- /* must be 32-bit instruction, always little-endian */
- bfd_putl32 (contents, address);
- else
- /* must be 32-bit data (endianness dependent) */
- bfd_put_32 (abfd, contents, address);
- break;
- case 8:
- bfd_put_64 (abfd, contents, address);
- break;
- default:
- abort ();
- }
-
- return status;
-}
-
static bfd_vma
aarch64_calculate_got_entry_vma (struct elf_link_hash_entry *h,
struct elf_aarch64_link_hash_table
}
}
}
- value = aarch64_resolve_relocation (r_type, place, value,
- signed_addend, weak_undef_p);
+ value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
+ signed_addend, weak_undef_p);
break;
case BFD_RELOC_AARCH64_16:
case BFD_RELOC_AARCH64_32_PCREL:
case BFD_RELOC_AARCH64_64_PCREL:
case BFD_RELOC_AARCH64_TSTBR14:
- value = aarch64_resolve_relocation (r_type, place, value,
- signed_addend, weak_undef_p);
+ value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
+ signed_addend, weak_undef_p);
break;
case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC:
value = aarch64_calculate_got_entry_vma (h, globals, info, value,
output_bfd,
unresolved_reloc_p);
- value = aarch64_resolve_relocation (r_type, place, value,
- 0, weak_undef_p);
+ value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
+ 0, weak_undef_p);
}
break;
+ globals->root.sgot->output_section->vma
+ globals->root.sgot->output_section->output_offset);
- value = aarch64_resolve_relocation (r_type, place, value,
- 0, weak_undef_p);
+ value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
+ 0, weak_undef_p);
*unresolved_reloc_p = FALSE;
break;
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:
- value = aarch64_resolve_relocation (r_type, place, value,
- signed_addend - tpoff_base (info), weak_undef_p);
+ value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
+ signed_addend - tpoff_base (info),
+ weak_undef_p);
*unresolved_reloc_p = FALSE;
break;
+ case BFD_RELOC_AARCH64_TLSDESC_ADD:
+ case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC:
case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21:
- case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12_NC:
case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC:
- case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC:
- case BFD_RELOC_AARCH64_TLSDESC_ADD:
+ case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12_NC:
case BFD_RELOC_AARCH64_TLSDESC_LDR:
if (globals->root.sgot == NULL)
return bfd_reloc_notsupported;
+ globals->root.sgotplt->output_section->output_offset
+ globals->sgotplt_jump_table_size);
- value = aarch64_resolve_relocation (r_type, place, value,
- 0, weak_undef_p);
+ value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
+ 0, weak_undef_p);
*unresolved_reloc_p = FALSE;
break;
if (save_addend)
return bfd_reloc_continue;
- return bfd_elf_aarch64_put_addend (input_bfd, hit_data, howto, value);
+ return _bfd_aarch64_elf_put_addend (input_bfd, hit_data, bfd_r_type,
+ howto, value);
}
/* Handle TLS relaxations. Relaxing is possible for symbols that use
case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC:
break;
+ case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC:
case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21:
case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC:
- case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC:
if (! symbol_tlsdesc_got_offset_mark_p (input_bfd, h, r_symndx))
{
bfd_boolean need_relocs = FALSE;
r_type = ELFNN_R_TYPE (rel->r_info);
switch (aarch64_tls_transition (abfd,info, r_type, h ,r_symndx))
{
- case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC:
- case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC:
- case BFD_RELOC_AARCH64_GOT_LD_PREL19:
case BFD_RELOC_AARCH64_ADR_GOT_PAGE:
- case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21:
+ case BFD_RELOC_AARCH64_GOT_LD_PREL19:
+ case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC:
+ case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC:
+ case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC:
+ case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21:
+ case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC:
+ case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12_NC:
case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC:
+ case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21:
case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21:
- case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC:
case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC:
- case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12:
+ case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC:
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_MOVW_TPREL_G2:
- case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1:
- case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC:
case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0:
case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC:
- case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21:
- case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC:
- case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12_NC:
- case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_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 (h != NULL)
{
if (h->got.refcount > 0)
return TRUE;
}
+/* Create the .got section to hold the global offset table. */
+
+static bfd_boolean
+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. */
+ s = bfd_get_linker_section (abfd, ".got");
+ if (s != 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 (abfd, 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 (abfd, 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 (abfd, 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 bfd_boolean
htab->root.dynobj = abfd;
sreloc = _bfd_elf_make_dynamic_reloc_section
- (sec, htab->root.dynobj, 3, abfd, /*rela? */ TRUE);
+ (sec, htab->root.dynobj, LOG_FILE_ALIGN, abfd, /*rela? */ TRUE);
if (sreloc == NULL)
return FALSE;
/* RR: We probably want to keep a consistency check that
there are no dangling GOT_PAGE relocs. */
- case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC:
- case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC:
- case BFD_RELOC_AARCH64_GOT_LD_PREL19:
case BFD_RELOC_AARCH64_ADR_GOT_PAGE:
- case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21:
+ case BFD_RELOC_AARCH64_GOT_LD_PREL19:
+ case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC:
+ case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC:
+ case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC:
+ case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21:
+ case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC:
+ case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12_NC:
case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC:
+ case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21:
case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21:
- case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC:
case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC:
- case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12:
+ case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC:
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_MOVW_TPREL_G2:
- case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1:
- case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC:
case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0:
case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC:
- case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21:
- case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC:
- case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12_NC:
- case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_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:
{
unsigned got_type;
unsigned old_got_type;
}
}
- if (htab->root.sgot == NULL)
- {
- if (htab->root.dynobj == NULL)
- htab->root.dynobj = abfd;
- if (!_bfd_elf_create_got_section (htab->root.dynobj, info))
- return FALSE;
- }
+ if (htab->root.dynobj == NULL)
+ htab->root.dynobj = abfd;
+ if (! aarch64_elf_create_got_section (htab->root.dynobj, info))
+ return FALSE;
break;
}
struct bfd_link_info *info)
{
struct elf_aarch64_link_hash_table *htab;
- struct elf_link_hash_entry *h;
+
+ /* We need to create .got section. */
+ if (!aarch64_elf_create_got_section (dynobj, info))
+ return FALSE;
if (!_bfd_elf_create_dynamic_sections (dynobj, info))
return FALSE;
if (!htab->sdynbss || (!info->shared && !htab->srelbss))
abort ();
- /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the
- dynobj's .got 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 (dynobj, info,
- htab->root.sgot, "_GLOBAL_OFFSET_TABLE_");
- elf_hash_table (info)->hgot = h;
- if (h == NULL)
- return FALSE;
-
return TRUE;
}
}
static inline void
-elf64_aarch64_update_plt_entry (bfd *output_bfd,
- unsigned int r_type,
- bfd_byte *plt_entry, bfd_vma value)
+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;
- howto = elfNN_aarch64_howto_from_type (r_type);
- bfd_elf_aarch64_put_addend (output_bfd, plt_entry, howto, value);
+ reloc_howto_type *howto = elfNN_aarch64_howto_from_bfd_reloc (r_type);
+
+ _bfd_aarch64_elf_put_addend (output_bfd, plt_entry, r_type, howto, value);
}
static void
/* Fill in the top 21 bits for this: ADRP x16, PLT_GOT + n * 8.
ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff */
- elf64_aarch64_update_plt_entry (output_bfd, AARCH64_R (ADR_PREL_PG_HI21),
- plt_entry,
- PG (gotplt_entry_address) -
- PG (plt_entry_address));
+ 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. */
- elf64_aarch64_update_plt_entry (output_bfd, AARCH64_R (LDSTNN_ABS_LO12_NC),
- plt_entry + 4,
- PG_OFFSET (gotplt_entry_address));
+ elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_LDSTNN_LO12,
+ plt_entry + 4,
+ PG_OFFSET (gotplt_entry_address));
- /* Fill in the the lo12 bits for the add from the pltgot entry. */
- elf64_aarch64_update_plt_entry (output_bfd, AARCH64_R (ADD_ABS_LO12_NC),
- plt_entry + 8,
- 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,
PLT0 will be slightly different in ELF32 due to different got entry
size.
*/
- bfd_vma plt_got_base;
+ bfd_vma plt_got_2nd_ent; /* Address of GOT[2]. */
bfd_vma plt_base;
elf_section_data (htab->root.splt->output_section)->this_hdr.sh_entsize =
PLT_ENTRY_SIZE;
- plt_got_base = (htab->root.sgotplt->output_section->vma
- + htab->root.sgotplt->output_offset);
+ 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_section->output_offset;
/* Fill in the top 21 bits for this: ADRP x16, PLT_GOT + n * 8.
ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff */
- elf64_aarch64_update_plt_entry (output_bfd, AARCH64_R (ADR_PREL_PG_HI21),
- htab->root.splt->contents + 4,
- PG (plt_got_base + 16) - PG (plt_base + 4));
+ elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADR_HI21_PCREL,
+ htab->root.splt->contents + 4,
+ PG (plt_got_2nd_ent) - PG (plt_base + 4));
- elf64_aarch64_update_plt_entry (output_bfd, AARCH64_R (LDSTNN_ABS_LO12_NC),
- htab->root.splt->contents + 8,
- PG_OFFSET (plt_got_base + 16));
+ elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_LDSTNN_LO12,
+ htab->root.splt->contents + 8,
+ PG_OFFSET (plt_got_2nd_ent));
- elf64_aarch64_update_plt_entry (output_bfd, AARCH64_R (ADD_ABS_LO12_NC),
- htab->root.splt->contents + 12,
- PG_OFFSET (plt_got_base + 16));
+ elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADD_LO12,
+ htab->root.splt->contents + 12,
+ PG_OFFSET (plt_got_2nd_ent));
}
static bfd_boolean
htab->root.splt->output_section->vma
+ htab->root.splt->output_offset + htab->tlsdesc_plt + 4;
- bfd_vma adrp2_addr =
- htab->root.splt->output_section->vma
- + htab->root.splt->output_offset + htab->tlsdesc_plt + 8;
+ bfd_vma adrp2_addr = adrp1_addr + 4;
bfd_vma got_addr =
htab->root.sgot->output_section->vma
+ htab->root.sgotplt->output_offset;
bfd_vma dt_tlsdesc_got = got_addr + htab->dt_tlsdesc_got;
- bfd_vma opcode;
+
+ bfd_byte *plt_entry =
+ htab->root.splt->contents + htab->tlsdesc_plt;
/* adrp x2, DT_TLSDESC_GOT */
- opcode = bfd_get_32 (output_bfd,
- htab->root.splt->contents
- + htab->tlsdesc_plt + 4);
- opcode = reencode_adr_imm
- (opcode, (PG (dt_tlsdesc_got) - PG (adrp1_addr)) >> 12);
- bfd_put_32 (output_bfd, opcode,
- htab->root.splt->contents + htab->tlsdesc_plt + 4);
+ 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 */
- opcode = bfd_get_32 (output_bfd,
- htab->root.splt->contents
- + htab->tlsdesc_plt + 8);
- opcode = reencode_adr_imm
- (opcode, (PG (pltgot_addr) - PG (adrp2_addr)) >> 12);
- bfd_put_32 (output_bfd, opcode,
- htab->root.splt->contents + htab->tlsdesc_plt + 8);
+ 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] */
- opcode = bfd_get_32 (output_bfd,
- htab->root.splt->contents
- + htab->tlsdesc_plt + 12);
- opcode = reencode_ldst_pos_imm (opcode,
- PG_OFFSET (dt_tlsdesc_got) >> 3);
- bfd_put_32 (output_bfd, opcode,
- htab->root.splt->contents + htab->tlsdesc_plt + 12);
+ elf_aarch64_update_plt_entry (output_bfd,
+ BFD_RELOC_AARCH64_LDSTNN_LO12,
+ plt_entry + 12,
+ PG_OFFSET (dt_tlsdesc_got));
/* add x3, x3, 0 */
- opcode = bfd_get_32 (output_bfd,
- htab->root.splt->contents
- + htab->tlsdesc_plt + 16);
- opcode = reencode_add_imm (opcode, PG_OFFSET (pltgot_addr));
- bfd_put_32 (output_bfd, opcode,
- htab->root.splt->contents + htab->tlsdesc_plt + 16);
+ elf_aarch64_update_plt_entry (output_bfd,
+ BFD_RELOC_AARCH64_ADD_LO12,
+ plt_entry + 16,
+ PG_OFFSET (pltgot_addr));
}
}
}
/* Fill in the first three entries in the global offset table. */
if (htab->root.sgotplt->size > 0)
{
- /* Set the first entry in the global offset table to the address of
- the dynamic section. */
- if (sdyn == NULL)
- bfd_put_NN (output_bfd, (bfd_vma) 0,
- htab->root.sgotplt->contents);
- else
- bfd_put_NN (output_bfd,
- sdyn->output_section->vma + sdyn->output_offset,
- htab->root.sgotplt->contents);
+ 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 * 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;
}
projects / deliverable / binutils-gdb.git / blobdiff