125b3c049e70834cf33790a28643ab058b507b35cBen Cheng/* Initialization of PPC64 specific backend library. 203333823c75a1c1887e923828113a1b0fd12020cElliott Hughes Copyright (C) 2004, 2005, 2006, 2007, 2008, 2013, 2014 Red Hat, Inc. 303333823c75a1c1887e923828113a1b0fd12020cElliott Hughes This file is part of elfutils. 425b3c049e70834cf33790a28643ab058b507b35cBen Cheng Written by Ulrich Drepper <drepper@redhat.com>, 2004. 525b3c049e70834cf33790a28643ab058b507b35cBen Cheng 603333823c75a1c1887e923828113a1b0fd12020cElliott Hughes This file is free software; you can redistribute it and/or modify 703333823c75a1c1887e923828113a1b0fd12020cElliott Hughes it under the terms of either 825b3c049e70834cf33790a28643ab058b507b35cBen Cheng 903333823c75a1c1887e923828113a1b0fd12020cElliott Hughes * the GNU Lesser General Public License as published by the Free 1003333823c75a1c1887e923828113a1b0fd12020cElliott Hughes Software Foundation; either version 3 of the License, or (at 1103333823c75a1c1887e923828113a1b0fd12020cElliott Hughes your option) any later version 1203333823c75a1c1887e923828113a1b0fd12020cElliott Hughes 1303333823c75a1c1887e923828113a1b0fd12020cElliott Hughes or 1403333823c75a1c1887e923828113a1b0fd12020cElliott Hughes 1503333823c75a1c1887e923828113a1b0fd12020cElliott Hughes * the GNU General Public License as published by the Free 1603333823c75a1c1887e923828113a1b0fd12020cElliott Hughes Software Foundation; either version 2 of the License, or (at 1703333823c75a1c1887e923828113a1b0fd12020cElliott Hughes your option) any later version 1803333823c75a1c1887e923828113a1b0fd12020cElliott Hughes 1903333823c75a1c1887e923828113a1b0fd12020cElliott Hughes or both in parallel, as here. 2003333823c75a1c1887e923828113a1b0fd12020cElliott Hughes 2103333823c75a1c1887e923828113a1b0fd12020cElliott Hughes elfutils is distributed in the hope that it will be useful, but 2225b3c049e70834cf33790a28643ab058b507b35cBen Cheng WITHOUT ANY WARRANTY; without even the implied warranty of 2325b3c049e70834cf33790a28643ab058b507b35cBen Cheng MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 2425b3c049e70834cf33790a28643ab058b507b35cBen Cheng General Public License for more details. 2525b3c049e70834cf33790a28643ab058b507b35cBen Cheng 2603333823c75a1c1887e923828113a1b0fd12020cElliott Hughes You should have received copies of the GNU General Public License and 2703333823c75a1c1887e923828113a1b0fd12020cElliott Hughes the GNU Lesser General Public License along with this program. If 2803333823c75a1c1887e923828113a1b0fd12020cElliott Hughes not, see <http://www.gnu.org/licenses/>. */ 2925b3c049e70834cf33790a28643ab058b507b35cBen Cheng 3025b3c049e70834cf33790a28643ab058b507b35cBen Cheng#ifdef HAVE_CONFIG_H 3125b3c049e70834cf33790a28643ab058b507b35cBen Cheng# include <config.h> 3225b3c049e70834cf33790a28643ab058b507b35cBen Cheng#endif 3325b3c049e70834cf33790a28643ab058b507b35cBen Cheng 3403333823c75a1c1887e923828113a1b0fd12020cElliott Hughes#include <string.h> 3503333823c75a1c1887e923828113a1b0fd12020cElliott Hughes 3625b3c049e70834cf33790a28643ab058b507b35cBen Cheng#define BACKEND ppc64_ 3725b3c049e70834cf33790a28643ab058b507b35cBen Cheng#define RELOC_PREFIX R_PPC64_ 3825b3c049e70834cf33790a28643ab058b507b35cBen Cheng#include "libebl_CPU.h" 3925b3c049e70834cf33790a28643ab058b507b35cBen Cheng 4025b3c049e70834cf33790a28643ab058b507b35cBen Cheng/* This defines the common reloc hooks based on ppc64_reloc.def. */ 4125b3c049e70834cf33790a28643ab058b507b35cBen Cheng#include "common-reloc.c" 4225b3c049e70834cf33790a28643ab058b507b35cBen Cheng 4325b3c049e70834cf33790a28643ab058b507b35cBen Cheng 4425b3c049e70834cf33790a28643ab058b507b35cBen Chengconst char * 4525b3c049e70834cf33790a28643ab058b507b35cBen Chengppc64_init (elf, machine, eh, ehlen) 4625b3c049e70834cf33790a28643ab058b507b35cBen Cheng Elf *elf __attribute__ ((unused)); 4725b3c049e70834cf33790a28643ab058b507b35cBen Cheng GElf_Half machine __attribute__ ((unused)); 4825b3c049e70834cf33790a28643ab058b507b35cBen Cheng Ebl *eh; 4925b3c049e70834cf33790a28643ab058b507b35cBen Cheng size_t ehlen; 5025b3c049e70834cf33790a28643ab058b507b35cBen Cheng{ 5125b3c049e70834cf33790a28643ab058b507b35cBen Cheng /* Check whether the Elf_BH object has a sufficent size. */ 5225b3c049e70834cf33790a28643ab058b507b35cBen Cheng if (ehlen < sizeof (Ebl)) 5325b3c049e70834cf33790a28643ab058b507b35cBen Cheng return NULL; 5425b3c049e70834cf33790a28643ab058b507b35cBen Cheng 5525b3c049e70834cf33790a28643ab058b507b35cBen Cheng /* We handle it. */ 5625b3c049e70834cf33790a28643ab058b507b35cBen Cheng eh->name = "PowerPC 64-bit"; 5725b3c049e70834cf33790a28643ab058b507b35cBen Cheng ppc64_init_reloc (eh); 5825b3c049e70834cf33790a28643ab058b507b35cBen Cheng HOOK (eh, reloc_simple_type); 5925b3c049e70834cf33790a28643ab058b507b35cBen Cheng HOOK (eh, dynamic_tag_name); 6025b3c049e70834cf33790a28643ab058b507b35cBen Cheng HOOK (eh, dynamic_tag_check); 6103333823c75a1c1887e923828113a1b0fd12020cElliott Hughes HOOK (eh, machine_flag_check); 6225b3c049e70834cf33790a28643ab058b507b35cBen Cheng HOOK (eh, copy_reloc_p); 6325b3c049e70834cf33790a28643ab058b507b35cBen Cheng HOOK (eh, check_special_symbol); 6403333823c75a1c1887e923828113a1b0fd12020cElliott Hughes HOOK (eh, check_st_other_bits); 6525b3c049e70834cf33790a28643ab058b507b35cBen Cheng HOOK (eh, bss_plt_p); 6625b3c049e70834cf33790a28643ab058b507b35cBen Cheng HOOK (eh, return_value_location); 6725b3c049e70834cf33790a28643ab058b507b35cBen Cheng HOOK (eh, register_info); 6825b3c049e70834cf33790a28643ab058b507b35cBen Cheng HOOK (eh, syscall_abi); 6925b3c049e70834cf33790a28643ab058b507b35cBen Cheng HOOK (eh, core_note); 7025b3c049e70834cf33790a28643ab058b507b35cBen Cheng HOOK (eh, auxv_info); 7103333823c75a1c1887e923828113a1b0fd12020cElliott Hughes HOOK (eh, abi_cfi); 7203333823c75a1c1887e923828113a1b0fd12020cElliott Hughes /* gcc/config/ #define DWARF_FRAME_REGISTERS. */ 7303333823c75a1c1887e923828113a1b0fd12020cElliott Hughes eh->frame_nregs = (114 - 1) + 32; 7403333823c75a1c1887e923828113a1b0fd12020cElliott Hughes HOOK (eh, set_initial_registers_tid); 7503333823c75a1c1887e923828113a1b0fd12020cElliott Hughes HOOK (eh, dwarf_to_regno); 7603333823c75a1c1887e923828113a1b0fd12020cElliott Hughes HOOK (eh, resolve_sym_value); 7703333823c75a1c1887e923828113a1b0fd12020cElliott Hughes 7803333823c75a1c1887e923828113a1b0fd12020cElliott Hughes /* Find the function descriptor .opd table for resolve_sym_value. */ 7903333823c75a1c1887e923828113a1b0fd12020cElliott Hughes if (elf != NULL) 8003333823c75a1c1887e923828113a1b0fd12020cElliott Hughes { 8103333823c75a1c1887e923828113a1b0fd12020cElliott Hughes GElf_Ehdr ehdr_mem, *ehdr = gelf_getehdr (elf, &ehdr_mem); 8203333823c75a1c1887e923828113a1b0fd12020cElliott Hughes if (ehdr != NULL && ehdr->e_type != ET_REL) 8303333823c75a1c1887e923828113a1b0fd12020cElliott Hughes { 8403333823c75a1c1887e923828113a1b0fd12020cElliott Hughes /* We could also try through DT_PPC64_OPD and DT_PPC64_OPDSZ. */ 8503333823c75a1c1887e923828113a1b0fd12020cElliott Hughes GElf_Shdr opd_shdr_mem, *opd_shdr; 8603333823c75a1c1887e923828113a1b0fd12020cElliott Hughes Elf_Scn *scn = NULL; 8703333823c75a1c1887e923828113a1b0fd12020cElliott Hughes while ((scn = elf_nextscn (elf, scn)) != NULL) 8803333823c75a1c1887e923828113a1b0fd12020cElliott Hughes { 8903333823c75a1c1887e923828113a1b0fd12020cElliott Hughes opd_shdr = gelf_getshdr (scn, &opd_shdr_mem); 9003333823c75a1c1887e923828113a1b0fd12020cElliott Hughes if (opd_shdr != NULL 9103333823c75a1c1887e923828113a1b0fd12020cElliott Hughes && (opd_shdr->sh_flags & SHF_ALLOC) != 0 9203333823c75a1c1887e923828113a1b0fd12020cElliott Hughes && opd_shdr->sh_type == SHT_PROGBITS 9303333823c75a1c1887e923828113a1b0fd12020cElliott Hughes && opd_shdr->sh_size > 0) 9403333823c75a1c1887e923828113a1b0fd12020cElliott Hughes { 9503333823c75a1c1887e923828113a1b0fd12020cElliott Hughes const char *name = elf_strptr (elf, ehdr->e_shstrndx, 9603333823c75a1c1887e923828113a1b0fd12020cElliott Hughes opd_shdr->sh_name); 9703333823c75a1c1887e923828113a1b0fd12020cElliott Hughes if (name != NULL && strcmp (name, ".opd") == 0) 9803333823c75a1c1887e923828113a1b0fd12020cElliott Hughes { 9903333823c75a1c1887e923828113a1b0fd12020cElliott Hughes eh->fd_addr = opd_shdr->sh_addr; 10003333823c75a1c1887e923828113a1b0fd12020cElliott Hughes eh->fd_data = elf_getdata (scn, NULL); 10103333823c75a1c1887e923828113a1b0fd12020cElliott Hughes break; 10203333823c75a1c1887e923828113a1b0fd12020cElliott Hughes } 10303333823c75a1c1887e923828113a1b0fd12020cElliott Hughes } 10403333823c75a1c1887e923828113a1b0fd12020cElliott Hughes } 10503333823c75a1c1887e923828113a1b0fd12020cElliott Hughes } 10603333823c75a1c1887e923828113a1b0fd12020cElliott Hughes } 10725b3c049e70834cf33790a28643ab058b507b35cBen Cheng 10825b3c049e70834cf33790a28643ab058b507b35cBen Cheng return MODVERSION; 10925b3c049e70834cf33790a28643ab058b507b35cBen Cheng} 110