diff options
Diffstat (limited to 'elf/dl-runtime.c')
| -rw-r--r-- | elf/dl-runtime.c | 35 |
1 files changed, 27 insertions, 8 deletions
diff --git a/elf/dl-runtime.c b/elf/dl-runtime.c index 088ff64..08c605c 100644 --- a/elf/dl-runtime.c +++ b/elf/dl-runtime.c @@ -1,5 +1,5 @@ /* On-demand PLT fixup for shared objects. - Copyright (C) 1995, 1996 Free Software Foundation, Inc. + Copyright (C) 1995, 1996, 1997 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -74,15 +74,19 @@ _dl_object_relocation_scope (struct link_map *l) #define elf_machine_rel 1 #define elf_machine_rela 2 #if elf_machine_relplt == elf_machine_rel -#define PLTREL ElfW(Rel) +# define PLTREL ElfW(Rel) #elif elf_machine_relplt == elf_machine_rela -#define PLTREL ElfW(Rela) +# define PLTREL ElfW(Rela) #else -#error "dl-machine.h bug: elf_machine_relplt not rel or rela" +# error "dl-machine.h bug: elf_machine_relplt not rel or rela" #endif #undef elf_machine_rel #undef elf_machine_rela +#ifndef VERSYMIDX +# define VERSYMIDX(sym) (DT_NUM + DT_PROCNUM + DT_VERSIONTAGIDX (sym)) +#endif + /* We need to define the function as a local symbol so that the reference in the trampoline code will be a local PC-relative call. Tell the compiler not to worry that the function appears not to be called. */ @@ -122,13 +126,28 @@ fixup ( { /* This macro is used as a callback from the elf_machine_relplt code. */ -#define RESOLVE(ref, flags) \ - (_dl_lookup_symbol (strtab + (*ref)->st_name, ref, scope, \ - l->l_name, flags)) +#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. */ - elf_machine_relplt (l, reloc, &symtab[ELFW(R_SYM) (reloc->r_info)]); + if (l->l_info[VERSYMIDX (DT_VERNEEDNUM)]) + { + 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]); + } + else + elf_machine_relplt (l, reloc, &symtab[ELFW(R_SYM) (reloc->r_info)], + NULL); } *_dl_global_scope_end = NULL; |