diff options
Diffstat (limited to 'elf/do-rel.h')
| -rw-r--r-- | elf/do-rel.h | 191 |
1 files changed, 0 insertions, 191 deletions
diff --git a/elf/do-rel.h b/elf/do-rel.h deleted file mode 100644 index 70071e5c44..0000000000 --- a/elf/do-rel.h +++ /dev/null @@ -1,191 +0,0 @@ -/* Do relocations for ELF dynamic linking. - Copyright (C) 1995-2017 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 - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 of the License, or (at your option) any later version. - - The GNU C Library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, see - <http://www.gnu.org/licenses/>. */ - -/* This file may be included twice, to define both - `elf_dynamic_do_rel' and `elf_dynamic_do_rela'. */ - -#ifdef DO_RELA -# define elf_dynamic_do_Rel elf_dynamic_do_Rela -# define Rel Rela -# define elf_machine_rel elf_machine_rela -# define elf_machine_rel_relative elf_machine_rela_relative -#endif - -#ifndef DO_ELF_MACHINE_REL_RELATIVE -# define DO_ELF_MACHINE_REL_RELATIVE(map, l_addr, relative) \ - elf_machine_rel_relative (l_addr, relative, \ - (void *) (l_addr + relative->r_offset)) -#endif - -/* Perform the relocations in MAP on the running program image as specified - by RELTAG, SZTAG. 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. */ - -auto inline void __attribute__ ((always_inline)) -elf_dynamic_do_Rel (struct link_map *map, - ElfW(Addr) reladdr, ElfW(Addr) relsize, - __typeof (((ElfW(Dyn) *) 0)->d_un.d_val) nrelative, - int lazy, int skip_ifunc) -{ - const ElfW(Rel) *r = (const void *) reladdr; - const ElfW(Rel) *end = (const void *) (reladdr + relsize); - ElfW(Addr) l_addr = map->l_addr; -# if defined ELF_MACHINE_IRELATIVE && !defined RTLD_BOOTSTRAP - const ElfW(Rel) *r2 = NULL; - const ElfW(Rel) *end2 = NULL; -# endif - -#if (!defined DO_RELA || !defined ELF_MACHINE_PLT_REL) && !defined RTLD_BOOTSTRAP - /* We never bind lazily during ld.so bootstrap. Unfortunately gcc is - not clever enough to see through all the function calls to realize - that. */ - if (lazy) - { - /* Doing lazy PLT relocations; they need very little info. */ - for (; r < end; ++r) -# ifdef ELF_MACHINE_IRELATIVE - if (ELFW(R_TYPE) (r->r_info) == ELF_MACHINE_IRELATIVE) - { - if (r2 == NULL) - r2 = r; - end2 = r; - } - else -# endif - elf_machine_lazy_rel (map, l_addr, r, skip_ifunc); - -# ifdef ELF_MACHINE_IRELATIVE - if (r2 != NULL) - for (; r2 <= end2; ++r2) - if (ELFW(R_TYPE) (r2->r_info) == ELF_MACHINE_IRELATIVE) - elf_machine_lazy_rel (map, l_addr, r2, skip_ifunc); -# endif - } - else -#endif - { - const ElfW(Sym) *const symtab = - (const void *) D_PTR (map, l_info[DT_SYMTAB]); - const ElfW(Rel) *relative = r; - r += nrelative; - -#ifndef RTLD_BOOTSTRAP - /* This is defined in rtld.c, but nowhere in the static libc.a; make - the reference weak so static programs can still link. This - declaration cannot be done when compiling rtld.c (i.e. #ifdef - RTLD_BOOTSTRAP) because rtld.c contains the common defn for - _dl_rtld_map, which is incompatible with a weak decl in the same - file. */ -# ifndef SHARED - weak_extern (GL(dl_rtld_map)); -# endif - if (map != &GL(dl_rtld_map)) /* Already done in rtld itself. */ -# if !defined DO_RELA || defined ELF_MACHINE_REL_RELATIVE - /* Rela platforms get the offset from r_addend and this must - be copied in the relocation address. Therefore we can skip - the relative relocations only if this is for rel - relocations or rela relocations if they are computed as - memory_loc += l_addr... */ - if (l_addr != 0) -# else - /* ...or we know the object has been prelinked. */ - if (l_addr != 0 || ! map->l_info[VALIDX(DT_GNU_PRELINKED)]) -# endif -#endif - for (; relative < r; ++relative) - DO_ELF_MACHINE_REL_RELATIVE (map, l_addr, relative); - -#ifdef RTLD_BOOTSTRAP - /* The dynamic linker always uses versioning. */ - assert (map->l_info[VERSYMIDX (DT_VERSYM)] != NULL); -#else - if (map->l_info[VERSYMIDX (DT_VERSYM)]) -#endif - { - const ElfW(Half) *const version = - (const void *) D_PTR (map, l_info[VERSYMIDX (DT_VERSYM)]); - - for (; r < end; ++r) - { -#if defined ELF_MACHINE_IRELATIVE && !defined RTLD_BOOTSTRAP - if (ELFW(R_TYPE) (r->r_info) == ELF_MACHINE_IRELATIVE) - { - if (r2 == NULL) - r2 = r; - end2 = r; - continue; - } -#endif - - 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), skip_ifunc); - } - -#if defined ELF_MACHINE_IRELATIVE && !defined RTLD_BOOTSTRAP - if (r2 != NULL) - for (; r2 <= end2; ++r2) - if (ELFW(R_TYPE) (r2->r_info) == ELF_MACHINE_IRELATIVE) - { - ElfW(Half) ndx - = version[ELFW(R_SYM) (r2->r_info)] & 0x7fff; - elf_machine_rel (map, r2, - &symtab[ELFW(R_SYM) (r2->r_info)], - &map->l_versions[ndx], - (void *) (l_addr + r2->r_offset), - skip_ifunc); - } -#endif - } -#ifndef RTLD_BOOTSTRAP - else - { - for (; r < end; ++r) -# ifdef ELF_MACHINE_IRELATIVE - if (ELFW(R_TYPE) (r->r_info) == ELF_MACHINE_IRELATIVE) - { - if (r2 == NULL) - r2 = r; - end2 = r; - } - else -# endif - elf_machine_rel (map, r, &symtab[ELFW(R_SYM) (r->r_info)], NULL, - (void *) (l_addr + r->r_offset), skip_ifunc); - -# ifdef ELF_MACHINE_IRELATIVE - if (r2 != NULL) - for (; r2 <= end2; ++r2) - if (ELFW(R_TYPE) (r2->r_info) == ELF_MACHINE_IRELATIVE) - elf_machine_rel (map, r2, &symtab[ELFW(R_SYM) (r2->r_info)], - NULL, (void *) (l_addr + r2->r_offset), - skip_ifunc); -# endif - } -#endif - } -} - -#undef elf_dynamic_do_Rel -#undef Rel -#undef elf_machine_rel -#undef elf_machine_rel_relative -#undef DO_ELF_MACHINE_REL_RELATIVE -#undef DO_RELA |