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/* PPC specific symbolic name handling.
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Copyright (C) 2004, 2005 Red Hat, Inc.
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This file is part of Red Hat elfutils.
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Written by Ulrich Drepper <drepper@redhat.com>, 2004.
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Red Hat elfutils is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by the
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Free Software Foundation; version 2 of the License.
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Red Hat 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 a copy of the GNU General Public License along
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with Red Hat elfutils; if not, write to the Free Software Foundation,
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Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301 USA.
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Red Hat elfutils is an included package of the Open Invention Network.
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An included package of the Open Invention Network is a package for which
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Open Invention Network licensees cross-license their patents. No patent
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license is granted, either expressly or impliedly, by designation as an
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included package. Should you wish to participate in the Open Invention
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Network licensing program, please visit www.openinventionnetwork.com
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<http://www.openinventionnetwork.com>. */
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#include "libebl_CPU.h"
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/* Check for the simple reloc types. */
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ppc_reloc_simple_type (Ebl *ebl __attribute__ ((unused)), int type)
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ppc_dynamic_tag_name (int64_t tag, char *buf __attribute__ ((unused)),
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size_t len __attribute__ ((unused)))
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ppc_dynamic_tag_check (int64_t tag)
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return tag == DT_PPC_GOT;
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/* Look for DT_PPC_GOT. */
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find_dyn_got (Elf *elf, GElf_Ehdr *ehdr, GElf_Addr *addr)
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for (int i = 0; i < ehdr->e_phnum; ++i)
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GElf_Phdr *phdr = gelf_getphdr (elf, i, &phdr_mem);
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if (phdr == NULL || phdr->p_type != PT_DYNAMIC)
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Elf_Scn *scn = gelf_offscn (elf, phdr->p_offset);
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GElf_Shdr *shdr = gelf_getshdr (scn, &shdr_mem);
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Elf_Data *data = elf_getdata (scn, NULL);
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if (shdr != NULL && shdr->sh_type == SHT_DYNAMIC && data != NULL)
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for (unsigned int j = 0; j < shdr->sh_size / shdr->sh_entsize; ++j)
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GElf_Dyn *dyn = gelf_getdyn (data, j, &dyn_mem);
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if (dyn != NULL && dyn->d_tag == DT_PPC_GOT)
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*addr = dyn->d_un.d_ptr;
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/* There is only one PT_DYNAMIC entry. */
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/* Check whether given symbol's st_value and st_size are OK despite failing
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ppc_check_special_symbol (Elf *elf, GElf_Ehdr *ehdr, const GElf_Sym *sym,
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const char *name, const GElf_Shdr *destshdr)
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if (strcmp (name, "_GLOBAL_OFFSET_TABLE_") == 0)
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if (find_dyn_got (elf, ehdr, &gotaddr))
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return sym->st_value == gotaddr;
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return sym->st_value == destshdr->sh_addr + 4;
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const char *sname = elf_strptr (elf, ehdr->e_shstrndx, destshdr->sh_name);
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if (strcmp (name, "_SDA_BASE_") == 0)
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return (strcmp (sname, ".sdata") == 0
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&& sym->st_value == destshdr->sh_addr + 0x8000
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&& sym->st_size == 0);
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if (strcmp (name, "_SDA2_BASE_") == 0)
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return (strcmp (sname, ".sdata2") == 0
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&& sym->st_value == destshdr->sh_addr + 0x8000
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&& sym->st_size == 0);
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/* Check if backend uses a bss PLT in this file. */
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ppc_bss_plt_p (Elf *elf, GElf_Ehdr *ehdr)
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return ! find_dyn_got (elf, ehdr, &addr);