diff options
Diffstat (limited to 'libdwarf/libdwarf_elf_init.c')
| -rw-r--r-- | libdwarf/libdwarf_elf_init.c | 69 |
1 files changed, 44 insertions, 25 deletions
diff --git a/libdwarf/libdwarf_elf_init.c b/libdwarf/libdwarf_elf_init.c index 1e374f2d793e..af2d370b980c 100644 --- a/libdwarf/libdwarf_elf_init.c +++ b/libdwarf/libdwarf_elf_init.c @@ -26,7 +26,7 @@ #include "_libdwarf.h" -ELFTC_VCSID("$Id: libdwarf_elf_init.c 2972 2013-12-23 06:46:04Z kaiwang27 $"); +ELFTC_VCSID("$Id: libdwarf_elf_init.c 3161 2015-02-15 21:43:36Z emaste $"); static const char *debug_name[] = { ".debug_abbrev", @@ -50,32 +50,46 @@ static const char *debug_name[] = { }; static void -_dwarf_elf_apply_reloc(Dwarf_Debug dbg, void *buf, Elf_Data *rel_data, - Elf_Data *symtab_data, int endian) +_dwarf_elf_write_reloc(Dwarf_Debug dbg, Elf_Data *symtab_data, int endian, + void *buf, uint64_t offset, GElf_Xword r_info, GElf_Sxword r_addend) { - Dwarf_Unsigned type; - GElf_Rela rela; GElf_Sym sym; - size_t symndx; - uint64_t offset; - int size, j; + int size; + + if (gelf_getsym(symtab_data, GELF_R_SYM(r_info), &sym) == NULL) + return; + if ((size = _dwarf_get_reloc_size(dbg, GELF_R_TYPE(r_info))) == 0) + return; /* Unknown or non-absolute relocation. */ + if (endian == ELFDATA2MSB) + _dwarf_write_msb(buf, &offset, sym.st_value + r_addend, size); + else + _dwarf_write_lsb(buf, &offset, sym.st_value + r_addend, size); +} - j = 0; - while (gelf_getrela(rel_data, j++, &rela) != NULL) { - symndx = GELF_R_SYM(rela.r_info); - type = GELF_R_TYPE(rela.r_info); +static void +_dwarf_elf_apply_rel_reloc(Dwarf_Debug dbg, void *buf, Elf_Data *rel_data, + Elf_Data *symtab_data, int endian) +{ + GElf_Rel rel; + int j; - if (gelf_getsym(symtab_data, symndx, &sym) == NULL) - continue; + j = 0; + while (gelf_getrel(rel_data, j++, &rel) != NULL) + _dwarf_elf_write_reloc(dbg, symtab_data, endian, buf, + rel.r_offset, rel.r_info, 0); +} - offset = rela.r_offset; - size = _dwarf_get_reloc_size(dbg, type); +static void +_dwarf_elf_apply_rela_reloc(Dwarf_Debug dbg, void *buf, Elf_Data *rel_data, + Elf_Data *symtab_data, int endian) +{ + GElf_Rela rela; + int j; - if (endian == ELFDATA2MSB) - _dwarf_write_msb(buf, &offset, rela.r_addend, size); - else - _dwarf_write_lsb(buf, &offset, rela.r_addend, size); - } + j = 0; + while (gelf_getrela(rel_data, j++, &rela) != NULL) + _dwarf_elf_write_reloc(dbg, symtab_data, endian, buf, + rela.r_offset, rela.r_info, rela.r_addend); } static int @@ -104,7 +118,8 @@ _dwarf_elf_relocate(Dwarf_Debug dbg, Elf *elf, Dwarf_Elf_Data *ed, size_t shndx, return (DW_DLE_ELF); } - if (sh.sh_type != SHT_RELA || sh.sh_size == 0) + if ((sh.sh_type != SHT_REL && sh.sh_type != SHT_RELA) || + sh.sh_size == 0) continue; if (sh.sh_info == shndx && sh.sh_link == symtab) { @@ -125,8 +140,12 @@ _dwarf_elf_relocate(Dwarf_Debug dbg, Elf *elf, Dwarf_Elf_Data *ed, size_t shndx, } memcpy(ed->ed_alloc, ed->ed_data->d_buf, ed->ed_data->d_size); - _dwarf_elf_apply_reloc(dbg, ed->ed_alloc, rel, - symtab_data, eh.e_ident[EI_DATA]); + if (sh.sh_type == SHT_REL) + _dwarf_elf_apply_rel_reloc(dbg, ed->ed_alloc, + rel, symtab_data, eh.e_ident[EI_DATA]); + else + _dwarf_elf_apply_rela_reloc(dbg, ed->ed_alloc, + rel, symtab_data, eh.e_ident[EI_DATA]); return (DW_DLE_NONE); } @@ -282,7 +301,7 @@ _dwarf_elf_init(Dwarf_Debug dbg, Elf *elf, Dwarf_Error *error) } } - if (_libdwarf.applyrela) { + if (_libdwarf.applyreloc) { if (_dwarf_elf_relocate(dbg, elf, &e->eo_data[j], elf_ndxscn(scn), symtab_ndx, symtab_data, error) != DW_DLE_NONE) |