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106 lines
3.1 KiB
106 lines
3.1 KiB
4 months ago
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/* Initialization of PPC64 specific backend library.
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Copyright (C) 2004, 2005, 2006, 2007, 2008, 2013, 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 <string.h>
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#define BACKEND ppc64_
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#define RELOC_PREFIX R_PPC64_
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#include "libebl_CPU.h"
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/* This defines the common reloc hooks based on ppc64_reloc.def. */
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#include "common-reloc.c"
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Ebl *
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ppc64_init (Elf *elf __attribute__ ((unused)),
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GElf_Half machine __attribute__ ((unused)),
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Ebl *eh)
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{
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/* We handle it. */
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ppc64_init_reloc (eh);
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HOOK (eh, reloc_simple_type);
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HOOK (eh, dynamic_tag_name);
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HOOK (eh, dynamic_tag_check);
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HOOK (eh, machine_flag_check);
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HOOK (eh, copy_reloc_p);
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HOOK (eh, check_special_symbol);
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HOOK (eh, check_st_other_bits);
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HOOK (eh, bss_plt_p);
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HOOK (eh, return_value_location);
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HOOK (eh, register_info);
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HOOK (eh, core_note);
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HOOK (eh, auxv_info);
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HOOK (eh, check_object_attribute);
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HOOK (eh, abi_cfi);
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/* gcc/config/ #define DWARF_FRAME_REGISTERS. */
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eh->frame_nregs = (114 - 1) + 32;
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HOOK (eh, set_initial_registers_tid);
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HOOK (eh, dwarf_to_regno);
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HOOK (eh, unwind);
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HOOK (eh, resolve_sym_value);
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/* Find the function descriptor .opd table for resolve_sym_value. */
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if (elf != NULL)
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{
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GElf_Ehdr ehdr_mem, *ehdr = gelf_getehdr (elf, &ehdr_mem);
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size_t shstrndx;
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if (ehdr != NULL && ehdr->e_type != ET_REL
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&& elf_getshdrstrndx (elf, &shstrndx) == 0)
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{
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/* We could also try through DT_PPC64_OPD and DT_PPC64_OPDSZ. */
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GElf_Shdr opd_shdr_mem, *opd_shdr;
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Elf_Scn *scn = NULL;
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while ((scn = elf_nextscn (elf, scn)) != NULL)
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{
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opd_shdr = gelf_getshdr (scn, &opd_shdr_mem);
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if (opd_shdr != NULL
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&& (opd_shdr->sh_flags & SHF_ALLOC) != 0
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&& opd_shdr->sh_type == SHT_PROGBITS
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&& opd_shdr->sh_size > 0)
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{
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const char *name = elf_strptr (elf, shstrndx,
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opd_shdr->sh_name);
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if (name != NULL && strcmp (name, ".opd") == 0)
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{
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eh->fd_addr = opd_shdr->sh_addr;
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eh->fd_data = elf_getdata (scn, NULL);
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break;
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}
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}
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}
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}
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}
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return eh;
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}
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