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134 lines
3.4 KiB
134 lines
3.4 KiB
/* PPC64 specific symbolic name handling. |
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Copyright (C) 2004, 2005, 2014 Red Hat, Inc. |
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This file is part of elfutils. |
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Written by Ulrich Drepper <drepper@redhat.com>, 2004. |
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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 <assert.h> |
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#include <elf.h> |
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#include <stddef.h> |
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#include <string.h> |
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#define BACKEND ppc64_ |
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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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ppc64_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_PPC64_ADDR64: |
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case R_PPC64_UADDR64: |
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return ELF_T_XWORD; |
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case R_PPC64_ADDR32: |
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case R_PPC64_UADDR32: |
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return ELF_T_WORD; |
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case R_PPC64_UADDR16: |
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return ELF_T_HALF; |
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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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const char * |
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ppc64_dynamic_tag_name (int64_t tag, 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_PPC64_GLINK: |
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return "PPC64_GLINK"; |
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case DT_PPC64_OPD: |
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return "PPC64_OPD"; |
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case DT_PPC64_OPDSZ: |
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return "PPC64_OPDSZ"; |
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case DT_PPC64_OPT: |
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return "PPC64_OPT"; |
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default: |
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break; |
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} |
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return NULL; |
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} |
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bool |
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ppc64_dynamic_tag_check (int64_t tag) |
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{ |
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return (tag == DT_PPC64_GLINK |
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|| tag == DT_PPC64_OPD |
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|| tag == DT_PPC64_OPDSZ |
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|| tag == DT_PPC64_OPT); |
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} |
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/* Check whether given symbol's st_value and st_size are OK despite failing |
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normal checks. */ |
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bool |
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ppc64_check_special_symbol (Elf *elf, |
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const GElf_Sym *sym __attribute__ ((unused)), |
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const char *name __attribute__ ((unused)), |
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const GElf_Shdr *destshdr) |
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{ |
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size_t shstrndx; |
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if (elf_getshdrstrndx (elf, &shstrndx) != 0) |
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return false; |
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const char *sname = elf_strptr (elf, shstrndx, destshdr->sh_name); |
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if (sname == NULL) |
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return false; |
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return strcmp (sname, ".opd") == 0; |
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} |
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/* Check if backend uses a bss PLT in this file. */ |
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bool |
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ppc64_bss_plt_p (Elf *elf __attribute__ ((unused))) |
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{ |
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return true; |
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} |
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/* Check whether machine flags are valid. PPC64 has three possible values: |
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0 - for unspecified ABI, or not using any specific ABI features. |
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1 - for the original ELF PPC64 ABI using function descriptors. |
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2 - for the revised ELFv2 PPC64 ABI without function descriptors. */ |
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bool |
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ppc64_machine_flag_check (GElf_Word flags) |
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{ |
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return flags == 0 || flags == 1 || flags == 2; |
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} |
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bool |
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ppc64_check_st_other_bits (unsigned char st_other) |
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{ |
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return (PPC64_LOCAL_ENTRY_OFFSET (st_other) != 0); |
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}
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