diff options
Diffstat (limited to 'bfd/elf64-x86-64.c')
| -rw-r--r-- | bfd/elf64-x86-64.c | 305 |
1 files changed, 38 insertions, 267 deletions
diff --git a/bfd/elf64-x86-64.c b/bfd/elf64-x86-64.c index 8562f33..311fb28 100644 --- a/bfd/elf64-x86-64.c +++ b/bfd/elf64-x86-64.c @@ -20,7 +20,6 @@ MA 02110-1301, USA. */ #include "elfxx-x86.h" -#include "elf-nacl.h" #include "dwarf2.h" #include "libiberty.h" @@ -4744,9 +4743,6 @@ elf_x86_64_output_arch_local_syms return TRUE; } -/* Forward declaration. */ -static const struct elf_x86_lazy_plt_layout elf_x86_64_nacl_plt; - /* Similar to _bfd_elf_get_synthetic_symtab. Support PLTs with all dynamic relocations. */ @@ -4791,31 +4787,19 @@ elf_x86_64_get_synthetic_symtab (bfd *abfd, if (relsize <= 0) return -1; - if (get_elf_backend_data (abfd)->target_os != is_nacl) + lazy_plt = &elf_x86_64_lazy_plt; + non_lazy_plt = &elf_x86_64_non_lazy_plt; + lazy_bnd_plt = &elf_x86_64_lazy_bnd_plt; + non_lazy_bnd_plt = &elf_x86_64_non_lazy_bnd_plt; + if (ABI_64_P (abfd)) { - lazy_plt = &elf_x86_64_lazy_plt; - non_lazy_plt = &elf_x86_64_non_lazy_plt; - lazy_bnd_plt = &elf_x86_64_lazy_bnd_plt; - non_lazy_bnd_plt = &elf_x86_64_non_lazy_bnd_plt; - if (ABI_64_P (abfd)) - { - lazy_ibt_plt = &elf_x86_64_lazy_ibt_plt; - non_lazy_ibt_plt = &elf_x86_64_non_lazy_ibt_plt; - } - else - { - lazy_ibt_plt = &elf_x32_lazy_ibt_plt; - non_lazy_ibt_plt = &elf_x32_non_lazy_ibt_plt; - } + lazy_ibt_plt = &elf_x86_64_lazy_ibt_plt; + non_lazy_ibt_plt = &elf_x86_64_non_lazy_ibt_plt; } else { - lazy_plt = &elf_x86_64_nacl_plt; - non_lazy_plt = NULL; - lazy_bnd_plt = NULL; - non_lazy_bnd_plt = NULL; - lazy_ibt_plt = NULL; - non_lazy_ibt_plt = NULL; + lazy_ibt_plt = &elf_x32_lazy_ibt_plt; + non_lazy_ibt_plt = &elf_x32_non_lazy_ibt_plt; } count = 0; @@ -5130,6 +5114,8 @@ static bfd * elf_x86_64_link_setup_gnu_properties (struct bfd_link_info *info) { struct elf_x86_init_table init_table; + const struct elf_backend_data *bed; + struct elf_x86_link_hash_table *htab; if ((int) R_X86_64_standard >= (int) R_X86_64_converted_reloc_bit || (int) R_X86_64_max <= (int) R_X86_64_converted_reloc_bit @@ -5142,42 +5128,30 @@ elf_x86_64_link_setup_gnu_properties (struct bfd_link_info *info) /* This is unused for x86-64. */ init_table.plt0_pad_byte = 0x90; - if (get_elf_backend_data (info->output_bfd)->target_os != is_nacl) + bed = get_elf_backend_data (info->output_bfd); + htab = elf_x86_hash_table (info, bed->target_id); + if (!htab) + abort (); + if (htab->params->bndplt) { - const struct elf_backend_data *bed - = get_elf_backend_data (info->output_bfd); - struct elf_x86_link_hash_table *htab - = elf_x86_hash_table (info, bed->target_id); - if (!htab) - abort (); - if (htab->params->bndplt) - { - init_table.lazy_plt = &elf_x86_64_lazy_bnd_plt; - init_table.non_lazy_plt = &elf_x86_64_non_lazy_bnd_plt; - } - else - { - init_table.lazy_plt = &elf_x86_64_lazy_plt; - init_table.non_lazy_plt = &elf_x86_64_non_lazy_plt; - } + init_table.lazy_plt = &elf_x86_64_lazy_bnd_plt; + init_table.non_lazy_plt = &elf_x86_64_non_lazy_bnd_plt; + } + else + { + init_table.lazy_plt = &elf_x86_64_lazy_plt; + init_table.non_lazy_plt = &elf_x86_64_non_lazy_plt; + } - if (ABI_64_P (info->output_bfd)) - { - init_table.lazy_ibt_plt = &elf_x86_64_lazy_ibt_plt; - init_table.non_lazy_ibt_plt = &elf_x86_64_non_lazy_ibt_plt; - } - else - { - init_table.lazy_ibt_plt = &elf_x32_lazy_ibt_plt; - init_table.non_lazy_ibt_plt = &elf_x32_non_lazy_ibt_plt; - } + if (ABI_64_P (info->output_bfd)) + { + init_table.lazy_ibt_plt = &elf_x86_64_lazy_ibt_plt; + init_table.non_lazy_ibt_plt = &elf_x86_64_non_lazy_ibt_plt; } else { - init_table.lazy_plt = &elf_x86_64_nacl_plt; - init_table.non_lazy_plt = NULL; - init_table.lazy_ibt_plt = NULL; - init_table.non_lazy_ibt_plt = NULL; + init_table.lazy_ibt_plt = &elf_x32_lazy_ibt_plt; + init_table.non_lazy_ibt_plt = &elf_x32_non_lazy_ibt_plt; } if (ABI_64_P (info->output_bfd)) @@ -5364,30 +5338,6 @@ elf64_x86_64_copy_solaris_special_section_fields (const bfd *ibfd ATTRIBUTE_UNUS #include "elf64-target.h" -/* Native Client support. */ - -static bfd_boolean -elf64_x86_64_nacl_elf_object_p (bfd *abfd) -{ - /* Set the right machine number for a NaCl x86-64 ELF64 file. */ - bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_x86_64_nacl); - return TRUE; -} - -#undef TARGET_LITTLE_SYM -#define TARGET_LITTLE_SYM x86_64_elf64_nacl_vec -#undef TARGET_LITTLE_NAME -#define TARGET_LITTLE_NAME "elf64-x86-64-nacl" -#undef elf64_bed -#define elf64_bed elf64_x86_64_nacl_bed - -#undef ELF_MAXPAGESIZE -#undef ELF_MINPAGESIZE -#undef ELF_COMMONPAGESIZE -#define ELF_MAXPAGESIZE 0x10000 -#define ELF_MINPAGESIZE 0x10000 -#define ELF_COMMONPAGESIZE 0x10000 - /* Restore defaults. */ #undef ELF_OSABI #undef elf_backend_static_tls_alignment @@ -5396,188 +5346,6 @@ elf64_x86_64_nacl_elf_object_p (bfd *abfd) #undef elf_backend_strtab_flags #undef elf_backend_copy_special_section_fields -/* NaCl uses substantially different PLT entries for the same effects. */ - -#undef elf_backend_plt_alignment -#define elf_backend_plt_alignment 5 -#define NACL_PLT_ENTRY_SIZE 64 -#define NACLMASK 0xe0 /* 32-byte alignment mask. */ - -static const bfd_byte elf_x86_64_nacl_plt0_entry[NACL_PLT_ENTRY_SIZE] = - { - 0xff, 0x35, 8, 0, 0, 0, /* pushq GOT+8(%rip) */ - 0x4c, 0x8b, 0x1d, 16, 0, 0, 0, /* mov GOT+16(%rip), %r11 */ - 0x41, 0x83, 0xe3, NACLMASK, /* and $-32, %r11d */ - 0x4d, 0x01, 0xfb, /* add %r15, %r11 */ - 0x41, 0xff, 0xe3, /* jmpq *%r11 */ - - /* 9-byte nop sequence to pad out to the next 32-byte boundary. */ - 0x66, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw 0x0(%rax,%rax,1) */ - - /* 32 bytes of nop to pad out to the standard size. */ - 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, /* excess data16 prefixes */ - 0x2e, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw %cs:0x0(%rax,%rax,1) */ - 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, /* excess data16 prefixes */ - 0x2e, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw %cs:0x0(%rax,%rax,1) */ - 0x66, /* excess data16 prefix */ - 0x90 /* nop */ - }; - -static const bfd_byte elf_x86_64_nacl_plt_entry[NACL_PLT_ENTRY_SIZE] = - { - 0x4c, 0x8b, 0x1d, 0, 0, 0, 0, /* mov name@GOTPCREL(%rip),%r11 */ - 0x41, 0x83, 0xe3, NACLMASK, /* and $-32, %r11d */ - 0x4d, 0x01, 0xfb, /* add %r15, %r11 */ - 0x41, 0xff, 0xe3, /* jmpq *%r11 */ - - /* 15-byte nop sequence to pad out to the next 32-byte boundary. */ - 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, /* excess data16 prefixes */ - 0x2e, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw %cs:0x0(%rax,%rax,1) */ - - /* Lazy GOT entries point here (32-byte aligned). */ - 0x68, /* pushq immediate */ - 0, 0, 0, 0, /* replaced with index into relocation table. */ - 0xe9, /* jmp relative */ - 0, 0, 0, 0, /* replaced with offset to start of .plt0. */ - - /* 22 bytes of nop to pad out to the standard size. */ - 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, /* excess data16 prefixes */ - 0x2e, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw %cs:0x0(%rax,%rax,1) */ - 0x0f, 0x1f, 0x80, 0, 0, 0, 0, /* nopl 0x0(%rax) */ - }; - -/* .eh_frame covering the .plt section. */ - -static const bfd_byte elf_x86_64_nacl_eh_frame_plt[] = - { -#if (PLT_CIE_LENGTH != 20 \ - || PLT_FDE_LENGTH != 36 \ - || PLT_FDE_START_OFFSET != 4 + PLT_CIE_LENGTH + 8 \ - || PLT_FDE_LEN_OFFSET != 4 + PLT_CIE_LENGTH + 12) -# error "Need PLT_CIE_LENGTH parameters for eh_frame_plt offsets!" -#endif - PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */ - 0, 0, 0, 0, /* CIE ID */ - 1, /* CIE version */ - 'z', 'R', 0, /* Augmentation string */ - 1, /* Code alignment factor */ - 0x78, /* Data alignment factor */ - 16, /* Return address column */ - 1, /* Augmentation size */ - DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */ - DW_CFA_def_cfa, 7, 8, /* DW_CFA_def_cfa: r7 (rsp) ofs 8 */ - DW_CFA_offset + 16, 1, /* DW_CFA_offset: r16 (rip) at cfa-8 */ - DW_CFA_nop, DW_CFA_nop, - - PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */ - PLT_CIE_LENGTH + 8, 0, 0, 0,/* CIE pointer */ - 0, 0, 0, 0, /* R_X86_64_PC32 .plt goes here */ - 0, 0, 0, 0, /* .plt size goes here */ - 0, /* Augmentation size */ - DW_CFA_def_cfa_offset, 16, /* DW_CFA_def_cfa_offset: 16 */ - DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */ - DW_CFA_def_cfa_offset, 24, /* DW_CFA_def_cfa_offset: 24 */ - DW_CFA_advance_loc + 58, /* DW_CFA_advance_loc: 58 to __PLT__+64 */ - DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */ - 13, /* Block length */ - DW_OP_breg7, 8, /* DW_OP_breg7 (rsp): 8 */ - DW_OP_breg16, 0, /* DW_OP_breg16 (rip): 0 */ - DW_OP_const1u, 63, DW_OP_and, DW_OP_const1u, 37, DW_OP_ge, - DW_OP_lit3, DW_OP_shl, DW_OP_plus, - DW_CFA_nop, DW_CFA_nop - }; - -static const struct elf_x86_lazy_plt_layout elf_x86_64_nacl_plt = - { - elf_x86_64_nacl_plt0_entry, /* plt0_entry */ - NACL_PLT_ENTRY_SIZE, /* plt0_entry_size */ - elf_x86_64_nacl_plt_entry, /* plt_entry */ - NACL_PLT_ENTRY_SIZE, /* plt_entry_size */ - elf_x86_64_nacl_plt0_entry, /* plt_tlsdesc_entry */ - NACL_PLT_ENTRY_SIZE, /* plt_tlsdesc_entry_size */ - 2, /* plt_tlsdesc_got1_offset */ - 9, /* plt_tlsdesc_got2_offset */ - 6, /* plt_tlsdesc_got1_insn_end */ - 13, /* plt_tlsdesc_got2_insn_end */ - 2, /* plt0_got1_offset */ - 9, /* plt0_got2_offset */ - 13, /* plt0_got2_insn_end */ - 3, /* plt_got_offset */ - 33, /* plt_reloc_offset */ - 38, /* plt_plt_offset */ - 7, /* plt_got_insn_size */ - 42, /* plt_plt_insn_end */ - 32, /* plt_lazy_offset */ - elf_x86_64_nacl_plt0_entry, /* pic_plt0_entry */ - elf_x86_64_nacl_plt_entry, /* pic_plt_entry */ - elf_x86_64_nacl_eh_frame_plt, /* eh_frame_plt */ - sizeof (elf_x86_64_nacl_eh_frame_plt) /* eh_frame_plt_size */ - }; - -#undef ELF_TARGET_OS -#define ELF_TARGET_OS is_nacl - -#undef elf_backend_object_p -#define elf_backend_object_p elf64_x86_64_nacl_elf_object_p -#undef elf_backend_modify_segment_map -#define elf_backend_modify_segment_map nacl_modify_segment_map -#undef elf_backend_modify_headers -#define elf_backend_modify_headers nacl_modify_headers -#undef elf_backend_final_write_processing -#define elf_backend_final_write_processing nacl_final_write_processing - -#include "elf64-target.h" - -/* Native Client x32 support. */ - -static bfd_boolean -elf32_x86_64_nacl_elf_object_p (bfd *abfd) -{ - /* Set the right machine number for a NaCl x86-64 ELF32 file. */ - bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_x64_32_nacl); - return TRUE; -} - -#undef TARGET_LITTLE_SYM -#define TARGET_LITTLE_SYM x86_64_elf32_nacl_vec -#undef TARGET_LITTLE_NAME -#define TARGET_LITTLE_NAME "elf32-x86-64-nacl" -#undef elf32_bed -#define elf32_bed elf32_x86_64_nacl_bed - -#define bfd_elf32_bfd_reloc_type_lookup \ - elf_x86_64_reloc_type_lookup -#define bfd_elf32_bfd_reloc_name_lookup \ - elf_x86_64_reloc_name_lookup -#define bfd_elf32_get_synthetic_symtab \ - elf_x86_64_get_synthetic_symtab - -#undef elf_backend_object_p -#define elf_backend_object_p \ - elf32_x86_64_nacl_elf_object_p - -#undef elf_backend_bfd_from_remote_memory -#define elf_backend_bfd_from_remote_memory \ - _bfd_elf32_bfd_from_remote_memory - -#undef elf_backend_size_info -#define elf_backend_size_info \ - _bfd_elf32_size_info - -#undef elf32_bed -#define elf32_bed elf32_x86_64_bed - -#include "elf32-target.h" - -/* Restore defaults. */ -#undef elf_backend_object_p -#define elf_backend_object_p elf64_x86_64_elf_object_p -#undef elf_backend_bfd_from_remote_memory -#undef elf_backend_size_info -#undef elf_backend_modify_segment_map -#undef elf_backend_modify_headers -#undef elf_backend_final_write_processing - /* Intel L1OM support. */ static bfd_boolean @@ -5666,11 +5434,6 @@ elf64_k1om_elf_object_p (bfd *abfd) #undef elf_backend_object_p #define elf_backend_object_p elf64_k1om_elf_object_p -#undef elf_backend_static_tls_alignment - -#undef elf_backend_want_plt_sym -#define elf_backend_want_plt_sym 0 - #include "elf64-target.h" /* FreeBSD K1OM support. */ @@ -5695,6 +5458,7 @@ elf64_k1om_elf_object_p (bfd *abfd) #undef TARGET_LITTLE_NAME #define TARGET_LITTLE_NAME "elf32-x86-64" #undef elf32_bed +#define elf32_bed elf32_x86_64_bed #undef ELF_ARCH #define ELF_ARCH bfd_arch_i386 @@ -5704,6 +5468,13 @@ elf64_k1om_elf_object_p (bfd *abfd) #undef ELF_OSABI +#define bfd_elf32_bfd_reloc_type_lookup \ + elf_x86_64_reloc_type_lookup +#define bfd_elf32_bfd_reloc_name_lookup \ + elf_x86_64_reloc_name_lookup +#define bfd_elf32_get_synthetic_symtab \ + elf_x86_64_get_synthetic_symtab + #undef elf_backend_object_p #define elf_backend_object_p \ elf32_x86_64_elf_object_p |