diff options
Diffstat (limited to 'src/backends/alpha_symbol.c')
| -rw-r--r-- | src/backends/alpha_symbol.c | 156 |
1 files changed, 0 insertions, 156 deletions
diff --git a/src/backends/alpha_symbol.c b/src/backends/alpha_symbol.c deleted file mode 100644 index 657d9eec..00000000 --- a/src/backends/alpha_symbol.c +++ /dev/null @@ -1,156 +0,0 @@ -/* Alpha specific symbolic name handling. - Copyright (C) 2002-2011 Red Hat, Inc. - This file is part of elfutils. - Written by Ulrich Drepper <drepper@redhat.com>, 2002. - - This file is free software; you can redistribute it and/or modify - it under the terms of either - - * the GNU Lesser General Public License as published by the Free - Software Foundation; either version 3 of the License, or (at - your option) any later version - - or - - * the GNU General Public License as published by the Free - Software Foundation; either version 2 of the License, or (at - your option) any later version - - or both in parallel, as here. - - elfutils 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 - General Public License for more details. - - You should have received copies of the GNU General Public License and - the GNU Lesser General Public License along with this program. If - not, see <http://www.gnu.org/licenses/>. */ - -#ifdef HAVE_CONFIG_H -# include <config.h> -#endif - -#include <elf.h> -#include <stddef.h> -#include <string.h> - -#define BACKEND alpha_ -#include "libebl_CPU.h" - - -const char * -alpha_dynamic_tag_name (int64_t tag, char *buf __attribute__ ((unused)), - size_t len __attribute__ ((unused))) -{ - switch (tag) - { - case DT_ALPHA_PLTRO: - return "ALPHA_PLTRO"; - default: - break; - } - return NULL; -} - -bool -alpha_dynamic_tag_check (int64_t tag) -{ - return tag == DT_ALPHA_PLTRO; -} - -/* Check for the simple reloc types. */ -Elf_Type -alpha_reloc_simple_type (Ebl *ebl __attribute__ ((unused)), int type) -{ - switch (type) - { - case R_ALPHA_REFLONG: - return ELF_T_WORD; - case R_ALPHA_REFQUAD: - return ELF_T_XWORD; - default: - return ELF_T_NUM; - } -} - - -/* Check whether SHF_MASKPROC flags are valid. */ -bool -alpha_machine_section_flag_check (GElf_Xword sh_flags) -{ - return (sh_flags &~ (SHF_ALPHA_GPREL)) == 0; -} - -bool -alpha_check_special_section (Ebl *ebl, - int ndx __attribute__ ((unused)), - const GElf_Shdr *shdr, - const char *sname __attribute__ ((unused))) -{ - if ((shdr->sh_flags - & (SHF_WRITE | SHF_EXECINSTR)) == (SHF_WRITE | SHF_EXECINSTR) - && shdr->sh_addr != 0) - { - /* This is ordinarily flagged, but is valid for an old-style PLT. - - Look for the SHT_DYNAMIC section and the DT_PLTGOT tag in it. - Its d_ptr should match the .plt section's sh_addr. */ - - Elf_Scn *scn = NULL; - while ((scn = elf_nextscn (ebl->elf, scn)) != NULL) - { - GElf_Shdr scn_shdr; - if (likely (gelf_getshdr (scn, &scn_shdr) != NULL) - && scn_shdr.sh_type == SHT_DYNAMIC - && scn_shdr.sh_entsize != 0) - { - GElf_Addr pltgot = 0; - Elf_Data *data = elf_getdata (scn, NULL); - if (data != NULL) - for (size_t i = 0; i < data->d_size / scn_shdr.sh_entsize; ++i) - { - GElf_Dyn dyn; - if (unlikely (gelf_getdyn (data, i, &dyn) == NULL)) - break; - if (dyn.d_tag == DT_PLTGOT) - pltgot = dyn.d_un.d_ptr; - else if (dyn.d_tag == DT_ALPHA_PLTRO && dyn.d_un.d_val != 0) - return false; /* This PLT should not be writable. */ - } - return pltgot == shdr->sh_addr; - } - } - } - - return false; -} - -/* Check whether given symbol's st_value and st_size are OK despite failing - normal checks. */ -bool -alpha_check_special_symbol (Elf *elf __attribute__ ((unused)), - GElf_Ehdr *ehdr __attribute__ ((unused)), - const GElf_Sym *sym __attribute__ ((unused)), - const char *name, - const GElf_Shdr *destshdr __attribute__ ((unused))) -{ - if (name == NULL) - return false; - - if (strcmp (name, "_GLOBAL_OFFSET_TABLE_") == 0) - /* On Alpha any place in the section is valid. */ - return true; - - return false; -} - -/* Check whether only valid bits are set on the st_other symbol flag. - Standard ST_VISIBILITY have already been masked off. */ -bool -alpha_check_st_other_bits (unsigned char st_other) -{ - return ((((st_other & STO_ALPHA_STD_GPLOAD) == STO_ALPHA_NOPV) - || ((st_other & STO_ALPHA_STD_GPLOAD) == STO_ALPHA_STD_GPLOAD)) - && (st_other &~ STO_ALPHA_STD_GPLOAD) == 0); -} |