135 lines
3.4 KiB
C
135 lines
3.4 KiB
C
/* PPC64 specific symbolic name handling.
|
|
Copyright (C) 2004, 2005, 2014 Red Hat, Inc.
|
|
This file is part of elfutils.
|
|
Written by Ulrich Drepper <drepper@redhat.com>, 2004.
|
|
|
|
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 <assert.h>
|
|
#include <elf.h>
|
|
#include <stddef.h>
|
|
#include <string.h>
|
|
|
|
#define BACKEND ppc64_
|
|
#include "libebl_CPU.h"
|
|
|
|
|
|
/* Check for the simple reloc types. */
|
|
Elf_Type
|
|
ppc64_reloc_simple_type (Ebl *ebl __attribute__ ((unused)), int type,
|
|
int *addsub __attribute__ ((unused)))
|
|
{
|
|
switch (type)
|
|
{
|
|
case R_PPC64_ADDR64:
|
|
case R_PPC64_UADDR64:
|
|
return ELF_T_XWORD;
|
|
case R_PPC64_ADDR32:
|
|
case R_PPC64_UADDR32:
|
|
return ELF_T_WORD;
|
|
case R_PPC64_UADDR16:
|
|
return ELF_T_HALF;
|
|
default:
|
|
return ELF_T_NUM;
|
|
}
|
|
}
|
|
|
|
|
|
const char *
|
|
ppc64_dynamic_tag_name (int64_t tag, char *buf __attribute__ ((unused)),
|
|
size_t len __attribute__ ((unused)))
|
|
{
|
|
switch (tag)
|
|
{
|
|
case DT_PPC64_GLINK:
|
|
return "PPC64_GLINK";
|
|
case DT_PPC64_OPD:
|
|
return "PPC64_OPD";
|
|
case DT_PPC64_OPDSZ:
|
|
return "PPC64_OPDSZ";
|
|
case DT_PPC64_OPT:
|
|
return "PPC64_OPT";
|
|
default:
|
|
break;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
|
|
bool
|
|
ppc64_dynamic_tag_check (int64_t tag)
|
|
{
|
|
return (tag == DT_PPC64_GLINK
|
|
|| tag == DT_PPC64_OPD
|
|
|| tag == DT_PPC64_OPDSZ
|
|
|| tag == DT_PPC64_OPT);
|
|
}
|
|
|
|
|
|
/* Check whether given symbol's st_value and st_size are OK despite failing
|
|
normal checks. */
|
|
bool
|
|
ppc64_check_special_symbol (Elf *elf,
|
|
const GElf_Sym *sym __attribute__ ((unused)),
|
|
const char *name __attribute__ ((unused)),
|
|
const GElf_Shdr *destshdr)
|
|
{
|
|
size_t shstrndx;
|
|
if (elf_getshdrstrndx (elf, &shstrndx) != 0)
|
|
return false;
|
|
const char *sname = elf_strptr (elf, shstrndx, destshdr->sh_name);
|
|
if (sname == NULL)
|
|
return false;
|
|
return strcmp (sname, ".opd") == 0;
|
|
}
|
|
|
|
|
|
/* Check if backend uses a bss PLT in this file. */
|
|
bool
|
|
ppc64_bss_plt_p (Elf *elf __attribute__ ((unused)))
|
|
{
|
|
return true;
|
|
}
|
|
|
|
/* Check whether machine flags are valid. PPC64 has three possible values:
|
|
0 - for unspecified ABI, or not using any specific ABI features.
|
|
1 - for the original ELF PPC64 ABI using function descriptors.
|
|
2 - for the revised ELFv2 PPC64 ABI without function descriptors. */
|
|
bool
|
|
ppc64_machine_flag_check (GElf_Word flags)
|
|
{
|
|
return flags == 0 || flags == 1 || flags == 2;
|
|
}
|
|
|
|
bool
|
|
ppc64_check_st_other_bits (unsigned char st_other)
|
|
{
|
|
return (PPC64_LOCAL_ENTRY_OFFSET (st_other) != 0);
|
|
}
|