00001 /* 00002 * Copyright 2005 PathScale, Inc. All Rights Reserved. 00003 */ 00004 00005 /* 00006 rawdata.c - implementation of the elf_rawdata(3) function. 00007 Copyright (C) 1995 - 2000 Michael Riepe <michael@stud.uni-hannover.de> 00008 00009 This library is free software; you can redistribute it and/or 00010 modify it under the terms of the GNU Library General Public 00011 License as published by the Free Software Foundation; either 00012 version 2 of the License, or (at your option) any later version. 00013 00014 This library is distributed in the hope that it will be useful, 00015 but WITHOUT ANY WARRANTY; without even the implied warranty of 00016 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00017 Library General Public License for more details. 00018 00019 You should have received a copy of the GNU Library General Public 00020 License along with this library; if not, write to the Free Software 00021 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. 00022 */ 00023 00024 #include <private.h> 00025 00026 #ifndef lint 00027 static const char rcsid[] = "@(#) $Id: rawdata.c,v 1.1.1.1 2005/10/21 19:00:00 marcel Exp $"; 00028 #endif /* lint */ 00029 00030 Elf_Data* 00031 elf_rawdata(Elf_Scn *scn, Elf_Data *data) { 00032 Scn_Data *sd; 00033 Elf *elf; 00034 00035 if (!scn) { 00036 return NULL; 00037 } 00038 elf_assert(scn->s_magic == SCN_MAGIC); 00039 elf = scn->s_elf; 00040 elf_assert(elf); 00041 elf_assert(elf->e_magic == ELF_MAGIC); 00042 if (!elf->e_readable) { 00043 return NULL; 00044 } 00045 else if (scn->s_index == SHN_UNDEF || scn->s_type == SHT_NULL) { 00046 seterr(ERROR_NULLSCN); 00047 } 00048 else if (data) { 00049 return NULL; 00050 } 00051 else if ((sd = scn->s_rawdata)) { 00052 elf_assert(sd->sd_magic == DATA_MAGIC); 00053 elf_assert(sd->sd_scn == scn); 00054 return &sd->sd_data; 00055 } 00056 else if (scn->s_offset < 0 || scn->s_offset > elf->e_size) { 00057 seterr(ERROR_OUTSIDE); 00058 } 00059 else if (scn->s_type != SHT_NOBITS 00060 && scn->s_offset + scn->s_size > elf->e_size) { 00061 seterr(ERROR_TRUNC_SCN); 00062 } 00063 else if (!(sd = (Scn_Data*)malloc(sizeof(*sd)))) { 00064 seterr(ERROR_MEM_SCNDATA); 00065 } 00066 else { 00067 *sd = _elf_data_init; 00068 sd->sd_scn = scn; 00069 sd->sd_freeme = 1; 00070 sd->sd_data.d_size = scn->s_size; 00071 sd->sd_data.d_version = _elf_version; 00072 if (scn->s_type != SHT_NOBITS && scn->s_size) { 00073 if (!(sd->sd_memdata = (char*)malloc(scn->s_size))) { 00074 seterr(ERROR_IO_2BIG); 00075 free(sd); 00076 return NULL; 00077 } 00078 else if (elf->e_rawdata) { 00079 memcpy(sd->sd_memdata, elf->e_rawdata + scn->s_offset, scn->s_size); 00080 } 00081 else if (!_elf_read(elf, sd->sd_memdata, scn->s_offset, scn->s_size)) { 00082 free(sd->sd_memdata); 00083 free(sd); 00084 return NULL; 00085 } 00086 sd->sd_data.d_buf = sd->sd_memdata; 00087 sd->sd_free_data = 1; 00088 } 00089 scn->s_rawdata = sd; 00090 return &sd->sd_data; 00091 } 00092 return NULL; 00093 }
1.5.6