diff options
Diffstat (limited to 'sysdeps/i386/dl-machine.h')
| -rw-r--r-- | sysdeps/i386/dl-machine.h | 57 |
1 files changed, 35 insertions, 22 deletions
diff --git a/sysdeps/i386/dl-machine.h b/sysdeps/i386/dl-machine.h index f791fa3..3e47180 100644 --- a/sysdeps/i386/dl-machine.h +++ b/sysdeps/i386/dl-machine.h @@ -342,20 +342,18 @@ elf_machine_rel (struct link_map *map, const Elf32_Rel *reloc, else #endif { -#if defined RTLD_BOOTSTRAP && !defined USE_TLS - Elf32_Addr value; - - assert (r_type == R_386_GLOB_DAT || r_type == R_386_JMP_SLOT); - - value = RESOLVE (&sym, version, r_type); - *reloc_addr = value + sym->st_value; -#else const Elf32_Sym *const refsym = sym; +#if defined USE_TLS && !defined RTLD_BOOTSTRAP + struct link_map *sym_map = RESOLVE_MAP (&sym, version, r_type); + Elf32_Addr value = sym == NULL ? 0 : sym_map->l_addr + sym->st_value; +#else Elf32_Addr value = RESOLVE (&sym, version, r_type); + # ifndef RTLD_BOOTSTRAP - if (sym) + if (sym != NULL) # endif value += sym->st_value; +#endif switch (r_type) { @@ -366,6 +364,7 @@ elf_machine_rel (struct link_map *map, const Elf32_Rel *reloc, /* XXX Remove TLS relocations which are not needed. */ +#ifdef USE_TLS case R_386_TLS_DTPMOD32: # ifdef RTLD_BOOTSTRAP /* During startup the dynamic linker is always the module @@ -374,29 +373,36 @@ elf_machine_rel (struct link_map *map, const Elf32_Rel *reloc, call. */ *reloc_addr = 1; # else - /* XXX Implement. RESOLVE must return the map from which we - get the module ID. */ - _exit (99); + /* Get the information from the link map returned by the + resolv function. */ + if (sym_map != NULL) + *reloc_addr = sym_map->l_tls_modid; # endif break; case R_386_TLS_DTPOFF32: # ifndef RTLD_BOOTSTRAP /* During relocation all TLS symbols are defined and used. Therefore the offset is already correct. */ - *reloc_addr = sym->st_value; + if (sym != NULL) + *reloc_addr = sym->st_value; # endif break; case R_386_TLS_TPOFF32: /* The offset is positive, backward from the thread pointer. */ # ifdef RTLD_BOOTSTRAP - *reloc_addr = GL(rtld_tlsoffset) - sym->st_value; + *reloc_addr = GL(dl_rtld_map).l_tls_offset - sym->st_value; # else - /* XXX Implement. */ - _exit (98); + /* We know the offset of object the symbol is contained is. + It is a positive value which will be subtracted from the + thread pointer. To get the variable position in the TLS + block we subtract the offset from that of the TLS block. */ + if (sym_map != NULL && sym != NULL) + *reloc_addr = sym_map->l_tls_offset - sym->st_value; # endif break; +#endif /* use TLS */ -# ifndef RTLD_BOOTSTRAP +#ifndef RTLD_BOOTSTRAP case R_386_32: *reloc_addr += value; break; @@ -426,9 +432,8 @@ elf_machine_rel (struct link_map *map, const Elf32_Rel *reloc, default: _dl_reloc_bad_type (map, r_type, 0); break; -# endif - } #endif + } } } @@ -438,13 +443,20 @@ elf_machine_rela (struct link_map *map, const Elf32_Rela *reloc, const Elf32_Sym *sym, const struct r_found_version *version, Elf32_Addr *const reloc_addr) { + const unsigned int r_type = ELF32_R_TYPE (reloc->r_info); + if (ELF32_R_TYPE (reloc->r_info) == R_386_RELATIVE) *reloc_addr = map->l_addr + reloc->r_addend; - else if (ELF32_R_TYPE (reloc->r_info) != R_386_NONE) + else if (r_type != R_386_NONE) { +# ifdef USE_TLS + struct link_map *sym_map = RESOLVE_MAP (&sym, version, r_type); + Elf32_Addr value = sym == NULL ? 0 : sym_map->l_addr + sym->st_value; +# else Elf32_Addr value = RESOLVE (&sym, version, ELF32_R_TYPE (reloc->r_info)); - if (sym) + if (sym != NULL) value += sym->st_value; +#endif switch (ELF32_R_TYPE (reloc->r_info)) { @@ -456,10 +468,11 @@ elf_machine_rela (struct link_map *map, const Elf32_Rela *reloc, case R_386_PC32: *reloc_addr = (value + reloc->r_addend - (Elf32_Addr) reloc_addr); break; + /* XXX Do we have to handle the TLS relocation here? */ default: /* We add these checks in the version to relocate ld.so only if we are still debugging. */ - _dl_reloc_bad_type (map, ELFW(R_TYPE) (reloc->r_info), 0); + _dl_reloc_bad_type (map, r_type, 0); break; } } |