diff options
Diffstat (limited to 'elf')
| -rw-r--r-- | elf/dl-conflict.c | 5 | ||||
| -rw-r--r-- | elf/dl-reloc.c | 3 | ||||
| -rw-r--r-- | elf/do-rel.h | 10 | ||||
| -rw-r--r-- | elf/dynamic-link.h | 41 | ||||
| -rw-r--r-- | elf/rtld.c | 12 |
5 files changed, 40 insertions, 31 deletions
diff --git a/elf/dl-conflict.c b/elf/dl-conflict.c index b730105628..653e446170 100644 --- a/elf/dl-conflict.c +++ b/elf/dl-conflict.c @@ -1,5 +1,5 @@ /* Resolve conflicts against already prelinked libraries. - Copyright (C) 2001, 2002, 2003, 2004, 2005, 2008 Free Software Foundation, Inc. + Copyright (C) 2001, 2002, 2003, 2004, 2005, 2008, 2011 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Jakub Jelinek <jakub@redhat.com>, 2001. @@ -69,7 +69,8 @@ _dl_resolve_conflicts (struct link_map *l, ElfW(Rela) *conflict, GL(dl_num_cache_relocations) += conflictend - conflict; for (; conflict < conflictend; ++conflict) - elf_machine_rela (l, conflict, NULL, NULL, (void *) conflict->r_offset); + elf_machine_rela (l, conflict, NULL, NULL, (void *) conflict->r_offset, + 0); } #endif } diff --git a/elf/dl-reloc.c b/elf/dl-reloc.c index 7294112346..c57b0f0a0d 100644 --- a/elf/dl-reloc.c +++ b/elf/dl-reloc.c @@ -162,6 +162,7 @@ _dl_relocate_object (struct link_map *l, struct r_scope_elem *scope[], /* Initialize it to make the compiler happy. */ const char *errstring = NULL; int lazy = reloc_mode & RTLD_LAZY; + int skip_ifunc = reloc_mode & __RTLD_NOIFUNC; #ifdef SHARED /* If we are auditing, install the same handlers we need for profiling. */ @@ -261,7 +262,7 @@ _dl_relocate_object (struct link_map *l, struct r_scope_elem *scope[], #include "dynamic-link.h" - ELF_DYNAMIC_RELOCATE (l, lazy, consider_profiling); + ELF_DYNAMIC_RELOCATE (l, lazy, consider_profiling, skip_ifunc); #ifndef PROF if (__builtin_expect (consider_profiling, 0)) diff --git a/elf/do-rel.h b/elf/do-rel.h index 990b9615e0..6187b9ed7a 100644 --- a/elf/do-rel.h +++ b/elf/do-rel.h @@ -1,5 +1,5 @@ /* Do relocations for ELF dynamic linking. - Copyright (C) 1995-2003, 2004 Free Software Foundation, Inc. + Copyright (C) 1995-2003, 2004, 2011 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 @@ -52,7 +52,7 @@ auto inline void __attribute__ ((always_inline)) elf_dynamic_do_rel (struct link_map *map, ElfW(Addr) reladdr, ElfW(Addr) relsize, - int lazy) + int lazy, int skip_ifunc) { const ElfW(Rel) *r = (const void *) reladdr; const ElfW(Rel) *end = (const void *) (reladdr + relsize); @@ -66,7 +66,7 @@ elf_dynamic_do_rel (struct link_map *map, { /* Doing lazy PLT relocations; they need very little info. */ for (; r < end; ++r) - elf_machine_lazy_rel (map, l_addr, r); + elf_machine_lazy_rel (map, l_addr, r, skip_ifunc); } else #endif @@ -119,14 +119,14 @@ elf_dynamic_do_rel (struct link_map *map, ElfW(Half) ndx = version[ELFW(R_SYM) (r->r_info)] & 0x7fff; elf_machine_rel (map, r, &symtab[ELFW(R_SYM) (r->r_info)], &map->l_versions[ndx], - (void *) (l_addr + r->r_offset)); + (void *) (l_addr + r->r_offset), skip_ifunc); } } #ifndef RTLD_BOOTSTRAP else for (; r < end; ++r) elf_machine_rel (map, r, &symtab[ELFW(R_SYM) (r->r_info)], NULL, - (void *) (l_addr + r->r_offset)); + (void *) (l_addr + r->r_offset), skip_ifunc); #endif } } diff --git a/elf/dynamic-link.h b/elf/dynamic-link.h index 9c16da4ebe..2bdab45464 100644 --- a/elf/dynamic-link.h +++ b/elf/dynamic-link.h @@ -60,7 +60,7 @@ int internal_function _dl_try_allocate_static_tls (struct link_map *map); auto inline void __attribute__((always_inline)) elf_machine_rel (struct link_map *map, const ElfW(Rel) *reloc, const ElfW(Sym) *sym, const struct r_found_version *version, - void *const reloc_addr); + void *const reloc_addr, int skip_ifunc); auto inline void __attribute__((always_inline)) elf_machine_rel_relative (ElfW(Addr) l_addr, const ElfW(Rel) *reloc, void *const reloc_addr); @@ -69,7 +69,7 @@ elf_machine_rel_relative (ElfW(Addr) l_addr, const ElfW(Rel) *reloc, auto inline void __attribute__((always_inline)) elf_machine_rela (struct link_map *map, const ElfW(Rela) *reloc, const ElfW(Sym) *sym, const struct r_found_version *version, - void *const reloc_addr); + void *const reloc_addr, int skip_ifunc); auto inline void __attribute__((always_inline)) elf_machine_rela_relative (ElfW(Addr) l_addr, const ElfW(Rela) *reloc, void *const reloc_addr); @@ -77,11 +77,13 @@ elf_machine_rela_relative (ElfW(Addr) l_addr, const ElfW(Rela) *reloc, # if ELF_MACHINE_NO_RELA || defined ELF_MACHINE_PLT_REL auto inline void __attribute__((always_inline)) elf_machine_lazy_rel (struct link_map *map, - ElfW(Addr) l_addr, const ElfW(Rel) *reloc); + ElfW(Addr) l_addr, const ElfW(Rel) *reloc, + int skip_ifunc); # else auto inline void __attribute__((always_inline)) elf_machine_lazy_rel (struct link_map *map, - ElfW(Addr) l_addr, const ElfW(Rela) *reloc); + ElfW(Addr) l_addr, const ElfW(Rela) *reloc, + int skip_ifunc); # endif #endif @@ -254,7 +256,7 @@ elf_get_dynamic_info (struct link_map *l, ElfW(Dyn) *temp) not happen we do something more optimal. */ # ifdef ELF_MACHINE_PLTREL_OVERLAP -# define _ELF_DYNAMIC_DO_RELOC(RELOC, reloc, map, do_lazy, test_rel) \ +# define _ELF_DYNAMIC_DO_RELOC(RELOC, reloc, map, do_lazy, skip_ifunc, test_rel) \ do { \ struct { ElfW(Addr) start, size; int lazy; } ranges[3]; \ int ranges_index; \ @@ -284,10 +286,11 @@ elf_get_dynamic_info (struct link_map *l, ElfW(Dyn) *temp) elf_dynamic_do_##reloc ((map), \ ranges[ranges_index].start, \ ranges[ranges_index].size, \ - ranges[ranges_index].lazy); \ + ranges[ranges_index].lazy, \ + skip_ifunc); \ } while (0) # else -# define _ELF_DYNAMIC_DO_RELOC(RELOC, reloc, map, do_lazy, test_rel) \ +# define _ELF_DYNAMIC_DO_RELOC(RELOC, reloc, map, do_lazy, skip_ifunc, test_rel) \ do { \ struct { ElfW(Addr) start, size; int lazy; } ranges[2]; \ ranges[0].lazy = 0; \ @@ -324,7 +327,8 @@ elf_get_dynamic_info (struct link_map *l, ElfW(Dyn) *temp) } \ \ if (ELF_DURING_STARTUP) \ - elf_dynamic_do_##reloc ((map), ranges[0].start, ranges[0].size, 0); \ + elf_dynamic_do_##reloc ((map), ranges[0].start, ranges[0].size, 0, \ + skip_ifunc); \ else \ { \ int ranges_index; \ @@ -332,7 +336,8 @@ elf_get_dynamic_info (struct link_map *l, ElfW(Dyn) *temp) elf_dynamic_do_##reloc ((map), \ ranges[ranges_index].start, \ ranges[ranges_index].size, \ - ranges[ranges_index].lazy); \ + ranges[ranges_index].lazy, \ + skip_ifunc); \ } \ } while (0) # endif @@ -345,29 +350,29 @@ elf_get_dynamic_info (struct link_map *l, ElfW(Dyn) *temp) # if ! ELF_MACHINE_NO_REL # include "do-rel.h" -# define ELF_DYNAMIC_DO_REL(map, lazy) \ - _ELF_DYNAMIC_DO_RELOC (REL, rel, map, lazy, _ELF_CHECK_REL) +# define ELF_DYNAMIC_DO_REL(map, lazy, skip_ifunc) \ + _ELF_DYNAMIC_DO_RELOC (REL, rel, map, lazy, skip_ifunc, _ELF_CHECK_REL) # else -# define ELF_DYNAMIC_DO_REL(map, lazy) /* Nothing to do. */ +# define ELF_DYNAMIC_DO_REL(map, lazy, skip_ifunc) /* Nothing to do. */ # endif # if ! ELF_MACHINE_NO_RELA # define DO_RELA # include "do-rel.h" -# define ELF_DYNAMIC_DO_RELA(map, lazy) \ - _ELF_DYNAMIC_DO_RELOC (RELA, rela, map, lazy, _ELF_CHECK_REL) +# define ELF_DYNAMIC_DO_RELA(map, lazy, skip_ifunc) \ + _ELF_DYNAMIC_DO_RELOC (RELA, rela, map, lazy, skip_ifunc, _ELF_CHECK_REL) # else -# define ELF_DYNAMIC_DO_RELA(map, lazy) /* Nothing to do. */ +# define ELF_DYNAMIC_DO_RELA(map, lazy, skip_ifunc) /* Nothing to do. */ # endif /* This can't just be an inline function because GCC is too dumb to inline functions containing inlines themselves. */ -# define ELF_DYNAMIC_RELOCATE(map, lazy, consider_profile) \ +# define ELF_DYNAMIC_RELOCATE(map, lazy, consider_profile, skip_ifunc) \ do { \ int edr_lazy = elf_machine_runtime_setup ((map), (lazy), \ (consider_profile)); \ - ELF_DYNAMIC_DO_REL ((map), edr_lazy); \ - ELF_DYNAMIC_DO_RELA ((map), edr_lazy); \ + ELF_DYNAMIC_DO_REL ((map), edr_lazy, skip_ifunc); \ + ELF_DYNAMIC_DO_RELA ((map), edr_lazy, skip_ifunc); \ } while (0) #endif diff --git a/elf/rtld.c b/elf/rtld.c index 324d979107..e4e413f601 100644 --- a/elf/rtld.c +++ b/elf/rtld.c @@ -544,7 +544,7 @@ _dl_start (void *arg) /* Relocate ourselves so we can do normal function calls and data access using the global offset table. */ - ELF_DYNAMIC_RELOCATE (&bootstrap_map, 0, 0); + ELF_DYNAMIC_RELOCATE (&bootstrap_map, 0, 0, 0); } bootstrap_map.l_relocated = 1; @@ -1951,8 +1951,9 @@ ERROR: ld.so: object '%s' cannot be loaded as audit interface: %s; ignored.\n", /* Relocate the main executable. */ struct relocate_args args = { .l = l, - .reloc_mode = (GLRO(dl_lazy) - ? RTLD_LAZY : 0) }; + .reloc_mode = ((GLRO(dl_lazy) + ? RTLD_LAZY : 0) + | __RTLD_NOIFUNC) }; _dl_receive_error (print_unresolved, relocate_doit, &args); /* This loop depends on the dependencies of the executable to @@ -2029,7 +2030,8 @@ ERROR: ld.so: object '%s' cannot be loaded as audit interface: %s; ignored.\n", struct relocate_args args; unsigned int i; - args.reloc_mode = GLRO(dl_lazy) ? RTLD_LAZY : 0; + args.reloc_mode = ((GLRO(dl_lazy) ? RTLD_LAZY : 0) + | __RTLD_NOIFUNC); i = main_map->l_searchlist.r_nlist; while (i-- > 0) @@ -2049,7 +2051,7 @@ ERROR: ld.so: object '%s' cannot be loaded as audit interface: %s; ignored.\n", /* Mark the link map as not yet relocated again. */ GL(dl_rtld_map).l_relocated = 0; _dl_relocate_object (&GL(dl_rtld_map), - main_map->l_scope, 0, 0); + main_map->l_scope, __RTLD_NOIFUNC, 0); } } #define VERNEEDTAG (DT_NUM + DT_THISPROCNUM + DT_VERSIONTAGIDX (DT_VERNEED)) |