diff options
Diffstat (limited to 'elf/dl-runtime.c')
| -rw-r--r-- | elf/dl-runtime.c | 71 |
1 files changed, 68 insertions, 3 deletions
diff --git a/elf/dl-runtime.c b/elf/dl-runtime.c index 7a44ea4..1b34026 100644 --- a/elf/dl-runtime.c +++ b/elf/dl-runtime.c @@ -137,17 +137,18 @@ fixup ( /* Perform the specified relocation. */ if (l->l_info[VERSYMIDX (DT_VERSYM)]) { - const ElfW(Half) * version = + const ElfW(Half) *version = (const ElfW(Half) *) (l->l_addr + l->l_info[VERSYMIDX (DT_VERSYM)]->d_un.d_ptr); ElfW(Half) ndx = version[ELFW(R_SYM) (reloc->r_info)]; elf_machine_relplt (l, reloc, &symtab[ELFW(R_SYM) (reloc->r_info)], - &l->l_versions[ndx]); + &l->l_versions[ndx], + (void *) (l->l_addr + reloc->r_offset)); } else elf_machine_relplt (l, reloc, &symtab[ELFW(R_SYM) (reloc->r_info)], - NULL); + NULL, (void *) (l->l_addr + reloc->r_offset)); } *_dl_global_scope_end = NULL; @@ -161,6 +162,70 @@ fixup ( } +#ifndef PROF +static ElfW(Addr) +profile_fixup ( +#ifdef ELF_MACHINE_RUNTIME_FIXUP_ARGS + ELF_MACHINE_RUNTIME_FIXUP_ARGS, +#endif + struct link_map *l, ElfW(Word) reloc_offset, ElfW(Addr) retaddr) +{ + void (*mcount_fct) (ElfW(Addr), ElfW(Addr)) = _dl_mcount; + const ElfW(Sym) *const symtab + = (const ElfW(Sym) *) (l->l_addr + l->l_info[DT_SYMTAB]->d_un.d_ptr); + const char *strtab = + (const char *) (l->l_addr + l->l_info[DT_STRTAB]->d_un.d_ptr); + + const PLTREL *const reloc + = (const void *) (l->l_addr + l->l_info[DT_JMPREL]->d_un.d_ptr + + reloc_offset); + ElfW(Addr) result; + + /* Set up the scope to find symbols referenced by this object. */ + struct link_map **scope = _dl_object_relocation_scope (l); + + { + /* This macro is used as a callback from the elf_machine_relplt code. */ +#define RESOLVE(ref, version, flags) \ + ((version) != NULL && (version)->hash != 0 \ + ? _dl_lookup_versioned_symbol (strtab + (*ref)->st_name, (ref), scope, \ + l->l_name, (version), (flags)) \ + : _dl_lookup_symbol (strtab + (*ref)->st_name, (ref), scope, \ + l->l_name, (flags))) +#include "dynamic-link.h" + + /* Perform the specified relocation. */ + if (l->l_info[VERSYMIDX (DT_VERSYM)]) + { + const ElfW(Half) *version = + (const ElfW(Half) *) (l->l_addr + + l->l_info[VERSYMIDX (DT_VERSYM)]->d_un.d_ptr); + ElfW(Half) ndx = version[ELFW(R_SYM) (reloc->r_info)]; + + elf_machine_relplt (l, reloc, &symtab[ELFW(R_SYM) (reloc->r_info)], + &l->l_versions[ndx], (void *) &result); + } + else + elf_machine_relplt (l, reloc, &symtab[ELFW(R_SYM) (reloc->r_info)], + NULL, (void *) &result); + } + + *_dl_global_scope_end = NULL; + + /* Return the address that was written by the relocation. */ +#ifdef ELF_FIXUP_RETURNS_ADDRESS + (*mcount_fct) (retaddr, result); + + return &result; /* XXX This cannot work. What to do??? --drepper */ +#else + (*mcount_fct) (retaddr, result); + + return result; +#endif +} +#endif + + /* This macro is defined in dl-machine.h to define the entry point called by the PLT. The `fixup' function above does the real work, but a little more twiddling is needed to get the stack right and jump to the address |