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150 lines
3.6 KiB
150 lines
3.6 KiB
/* SPARC specific symbolic name handling.
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Copyright (C) 2002, 2003, 2005, 2007, 2008 Red Hat, Inc.
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This file is part of elfutils.
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Written by Jakub Jelinek <jakub@redhat.com>, 2002.
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This file is free software; you can redistribute it and/or modify
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it under the terms of either
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* the GNU Lesser General Public License as published by the Free
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Software Foundation; either version 3 of the License, or (at
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your option) any later version
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or
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* the GNU General Public License as published by the Free
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Software Foundation; either version 2 of the License, or (at
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your option) any later version
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or both in parallel, as here.
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elfutils is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received copies of the GNU General Public License and
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the GNU Lesser General Public License along with this program. If
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not, see <http://www.gnu.org/licenses/>. */
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#ifdef HAVE_CONFIG_H
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# include <config.h>
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#endif
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#include <elf.h>
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#include <stddef.h>
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#define BACKEND sparc_
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#include "libebl_CPU.h"
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/* Check for the simple reloc types. */
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Elf_Type
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sparc_reloc_simple_type (Ebl *ebl __attribute__ ((unused)), int type,
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int *addsub __attribute__ ((unused)))
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{
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switch (type)
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{
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case R_SPARC_8:
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return ELF_T_BYTE;
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case R_SPARC_16:
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case R_SPARC_UA16:
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return ELF_T_HALF;
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case R_SPARC_32:
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case R_SPARC_UA32:
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return ELF_T_WORD;
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case R_SPARC_64:
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case R_SPARC_UA64:
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return ELF_T_XWORD;
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default:
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return ELF_T_NUM;
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}
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}
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/* Check whether machine flags are valid. */
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bool
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sparc_machine_flag_check (GElf_Word flags)
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{
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return ((flags &~ (EF_SPARCV9_MM
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| EF_SPARC_LEDATA
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| EF_SPARC_32PLUS
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| EF_SPARC_SUN_US1
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| EF_SPARC_SUN_US3)) == 0);
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}
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bool
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sparc_check_special_section (Ebl *ebl,
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int ndx __attribute__ ((unused)),
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const GElf_Shdr *shdr,
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const char *sname __attribute__ ((unused)))
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{
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if ((shdr->sh_flags & (SHF_WRITE | SHF_EXECINSTR))
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== (SHF_WRITE | SHF_EXECINSTR))
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{
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/* This is ordinarily flagged, but is valid for a PLT on SPARC.
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Look for the SHT_DYNAMIC section and the DT_PLTGOT tag in it.
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Its d_ptr should match the .plt section's sh_addr. */
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Elf_Scn *scn = NULL;
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while ((scn = elf_nextscn (ebl->elf, scn)) != NULL)
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{
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GElf_Shdr scn_shdr;
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if (likely (gelf_getshdr (scn, &scn_shdr) != NULL)
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&& scn_shdr.sh_type == SHT_DYNAMIC
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&& scn_shdr.sh_entsize != 0)
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{
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Elf_Data *data = elf_getdata (scn, NULL);
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if (data != NULL)
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for (size_t i = 0; i < data->d_size / scn_shdr.sh_entsize; ++i)
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{
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GElf_Dyn dyn;
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if (unlikely (gelf_getdyn (data, i, &dyn) == NULL))
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break;
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if (dyn.d_tag == DT_PLTGOT)
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return dyn.d_un.d_ptr == shdr->sh_addr;
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}
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break;
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}
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}
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}
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return false;
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}
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const char *
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sparc_symbol_type_name (int type,
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char *buf __attribute__ ((unused)),
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size_t len __attribute__ ((unused)))
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{
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switch (type)
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{
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case STT_SPARC_REGISTER:
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return "SPARC_REGISTER";
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}
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return NULL;
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}
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const char *
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sparc_dynamic_tag_name (int64_t tag,
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char *buf __attribute__ ((unused)),
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size_t len __attribute__ ((unused)))
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{
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switch (tag)
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{
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case DT_SPARC_REGISTER:
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return "SPARC_REGISTER";
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}
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return NULL;
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}
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bool
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sparc_dynamic_tag_check (int64_t tag)
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{
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switch (tag)
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{
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case DT_SPARC_REGISTER:
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return true;
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}
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return false;
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}
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