diff options
Diffstat (limited to 'bfd/mach-o-i386.c')
| -rw-r--r-- | bfd/mach-o-i386.c | 164 |
1 files changed, 163 insertions, 1 deletions
diff --git a/bfd/mach-o-i386.c b/bfd/mach-o-i386.c index 7d389f55..f600c01 100644 --- a/bfd/mach-o-i386.c +++ b/bfd/mach-o-i386.c @@ -60,9 +60,171 @@ bfd_mach_o_i386_mkobject (bfd *abfd) return TRUE; } +static reloc_howto_type i386_howto_table[]= +{ + HOWTO(BFD_RELOC_32, 0, 2, 32, FALSE, 0, + complain_overflow_bitfield, + NULL, "32", + FALSE, 0xffffffff, 0xffffffff, FALSE), + HOWTO(BFD_RELOC_16, 0, 1, 16, FALSE, 0, + complain_overflow_bitfield, + NULL, "16", + FALSE, 0xffff, 0xffff, FALSE), + HOWTO(BFD_RELOC_8, 0, 0, 8, FALSE, 0, + complain_overflow_bitfield, + NULL, "8", + FALSE, 0xff, 0xff, FALSE), + HOWTO(BFD_RELOC_32_PCREL, 0, 2, 32, TRUE, 0, + complain_overflow_bitfield, + NULL, "DISP32", + FALSE, 0xffffffff, 0xffffffff, TRUE), + HOWTO(BFD_RELOC_16_PCREL, 0, 1, 16, TRUE, 0, + complain_overflow_bitfield, + NULL, "DISP16", + FALSE, 0xffff, 0xffff, TRUE), + HOWTO(BFD_RELOC_MACH_O_SECTDIFF, 0, 2, 32, FALSE, 0, + complain_overflow_bitfield, + NULL, "SECTDIFF_32", + FALSE, 0xffffffff, 0xffffffff, FALSE), + HOWTO(BFD_RELOC_MACH_O_PAIR, 0, 2, 32, FALSE, 0, + complain_overflow_bitfield, + NULL, "PAIR_32", + FALSE, 0xffffffff, 0xffffffff, FALSE), +}; + +static bfd_boolean +bfd_mach_o_i386_swap_reloc_in (arelent *res, bfd_mach_o_reloc_info *reloc) +{ + if (reloc->r_scattered) + { + switch (reloc->r_type) + { + case BFD_MACH_O_GENERIC_RELOC_PAIR: + if (reloc->r_length != 2) + return FALSE; + res->howto = &i386_howto_table[3]; + res->address = res[-1].address; + return TRUE; + case BFD_MACH_O_GENERIC_RELOC_SECTDIFF: + case BFD_MACH_O_GENERIC_RELOC_LOCAL_SECTDIFF: + if (reloc->r_length != 2) + return FALSE; + res->howto = &i386_howto_table[2]; + return TRUE; + default: + return FALSE; + } + } + else + { + switch (reloc->r_type) + { + case BFD_MACH_O_GENERIC_RELOC_VANILLA: + switch ((reloc->r_length << 1) | reloc->r_pcrel) + { + case 0: /* len = 0, pcrel = 0 */ + res->howto = &i386_howto_table[2]; + return TRUE; + case 2: /* len = 1, pcrel = 0 */ + res->howto = &i386_howto_table[1]; + return TRUE; + case 3: /* len = 1, pcrel = 1 */ + res->howto = &i386_howto_table[4]; + return TRUE; + case 4: /* len = 2, pcrel = 0 */ + res->howto = &i386_howto_table[0]; + return TRUE; + case 5: /* len = 2, pcrel = 1 */ + res->howto = &i386_howto_table[3]; + return TRUE; + default: + return FALSE; + } + break; + default: + return FALSE; + } + } +} + +static bfd_boolean +bfd_mach_o_i386_swap_reloc_out (arelent *rel, bfd_mach_o_reloc_info *rinfo) +{ + rinfo->r_address = rel->address; + switch (rel->howto->type) + { + case BFD_RELOC_32: + case BFD_RELOC_32_PCREL: + case BFD_RELOC_16: + case BFD_RELOC_16_PCREL: + case BFD_RELOC_8: + rinfo->r_scattered = 0; + rinfo->r_type = BFD_MACH_O_GENERIC_RELOC_VANILLA; + rinfo->r_pcrel = rel->howto->pc_relative; + rinfo->r_length = rel->howto->size; /* Correct in practice. */ + if ((*rel->sym_ptr_ptr)->flags & BSF_SECTION_SYM) + { + rinfo->r_extern = 0; + rinfo->r_value = (*rel->sym_ptr_ptr)->section->target_index; + } + else + { + rinfo->r_extern = 1; + rinfo->r_value = (*rel->sym_ptr_ptr)->udata.i; + } + break; + case BFD_RELOC_MACH_O_SECTDIFF: + rinfo->r_scattered = 1; + rinfo->r_type = BFD_MACH_O_GENERIC_RELOC_SECTDIFF; + rinfo->r_pcrel = 0; + rinfo->r_length = 2; + rinfo->r_extern = 0; + rinfo->r_value = (*rel->sym_ptr_ptr)->value + + (*rel->sym_ptr_ptr)->section->vma; + break; + case BFD_RELOC_MACH_O_PAIR: + rinfo->r_address = 0; + rinfo->r_scattered = 1; + rinfo->r_type = BFD_MACH_O_GENERIC_RELOC_PAIR; + rinfo->r_pcrel = 0; + rinfo->r_length = 2; + rinfo->r_extern = 0; + rinfo->r_value = (*rel->sym_ptr_ptr)->value + + (*rel->sym_ptr_ptr)->section->vma; + break; + default: + return FALSE; + } + return TRUE; +} + +static reloc_howto_type * +bfd_mach_o_i386_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, + bfd_reloc_code_real_type code) +{ + unsigned int i; + + for (i = 0; i < sizeof (i386_howto_table) / sizeof (*i386_howto_table); i++) + if (code == i386_howto_table[i].type) + return &i386_howto_table[i]; + return NULL; +} + +static reloc_howto_type * +bfd_mach_o_i386_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, + const char *name ATTRIBUTE_UNUSED) +{ + return NULL; +} + +#define bfd_mach_o_swap_reloc_in bfd_mach_o_i386_swap_reloc_in +#define bfd_mach_o_swap_reloc_out bfd_mach_o_i386_swap_reloc_out + +#define bfd_mach_o_bfd_reloc_type_lookup bfd_mach_o_i386_bfd_reloc_type_lookup +#define bfd_mach_o_bfd_reloc_name_lookup bfd_mach_o_i386_bfd_reloc_name_lookup + #define TARGET_NAME mach_o_i386_vec #define TARGET_STRING "mach-o-i386" #define TARGET_BIG_ENDIAN 0 #define TARGET_ARCHIVE 0 - #include "mach-o-target.c" |