diff options
Diffstat (limited to 'elf/do-rel.h')
| -rw-r--r-- | elf/do-rel.h | 53 |
1 files changed, 31 insertions, 22 deletions
diff --git a/elf/do-rel.h b/elf/do-rel.h index 04643e8..acef25d 100644 --- a/elf/do-rel.h +++ b/elf/do-rel.h @@ -30,37 +30,46 @@ Cambridge, MA 02139, USA. */ /* Perform the relocations in MAP on the running program image as specified by RELTAG, SZTAG. *RESOLVE is called to resolve symbol values; it modifies its argument pointer to point to the defining symbol, and - returns the base load address of the defining object. */ + returns the base load address of the defining object. If LAZY is + nonzero, this is the first pass on PLT relocations; they should be set + up to call _dl_runtime_resolve, rather than fully resolved now. */ static inline void elf_dynamic_do_rel (struct link_map *map, int reltag, int sztag, - Elf32_Addr (*resolve) (const Elf32_Sym **)) + Elf32_Addr (*resolve) (const Elf32_Sym **), + int lazy) { const Elf32_Sym *const symtab - = (const Elf32_Sym *) map->l_info[DT_SYMTAB]->d_un.d_ptr; - const Elf32_Rel *r = (const Elf32_Rel *) map->l_info[reltag]->d_un.d_ptr; + = (const Elf32_Sym *) (map->l_addr + map->l_info[DT_SYMTAB]->d_un.d_ptr); + const Elf32_Rel *r + = (const Elf32_Rel *) (map->l_addr + map->l_info[reltag]->d_un.d_ptr); const Elf32_Rel *end = &r[map->l_info[sztag]->d_un.d_val / sizeof *r]; - for (; r < end; ++r) - { - const Elf32_Sym *definer = &symtab[ELF32_R_SYM (r->r_info)]; - Elf32_Addr loadbase; + if (lazy) + /* Doing lazy PLT relocations; they need very little info. */ + for (; r < end; ++r) + elf_machine_lazy_rel (map, r); + else + for (; r < end; ++r) + { + const Elf32_Sym *definer = &symtab[ELF32_R_SYM (r->r_info)]; + Elf32_Addr loadbase; - if (ELF32_R_SYM (r->r_info) == STN_UNDEF) - loadbase = 0; /* This value will not be consulted. */ - else - { - if (resolve) - loadbase = (*resolve) (&definer); - else - { - assert (definer->st_shndx != SHN_UNDEF); - loadbase = map->l_addr; - } - } - elf_machine_rel (map, r, loadbase, definer); - } + if (ELF32_R_SYM (r->r_info) == STN_UNDEF) + loadbase = 0; /* This value will not be consulted. */ + else + { + if (resolve) + loadbase = (*resolve) (&definer); + else + { + assert (definer->st_shndx != SHN_UNDEF); + loadbase = map->l_addr; + } + } + elf_machine_rel (map, r, loadbase, definer); + } } #undef elf_dynamic_do_rel |