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/*
* Copyright (C) 2014 Google, Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program 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 a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA, 02110-1301 USA
*/
#ifndef ELFPARSING_H
#define ELFPARSING_H
#include "elf.h"
#include "common.h"
struct parsed_elf {
Elf64_Ehdr ehdr;
Elf64_Phdr *phdr;
Elf64_Shdr *shdr;
/*
* The relocs array contains pointers to arrays of relocation
* structures. Each index into the relocs array corresponds to its
* corresponding section index. i.e. if a section i is of type SHT_REL
* or SHT_RELA then the corresponding index into the relocs array will
* contain the associated relocations. Otherwise thee entry will be
* NULL.
*/
Elf64_Rela **relocs;
/*
* Similarly to the relocs array the strtabs array consists of an
* array of pointers where each entry represents a potential struct
* buffer pointer. Only setions of type SHT_STRTAB will have a non-NULL
* entry.
*/
struct buffer **strtabs;
/* Parsed symbols. */
Elf64_Sym *syms;
};
#define ELF_PARSE_PHDR (1 << 0)
#define ELF_PARSE_SHDR (1 << 1)
#define ELF_PARSE_RELOC (1 << 2)
#define ELF_PARSE_STRTAB (1 << 3)
#define ELF_PARSE_SYMTAB (1 << 4)
#define ELF_PARSE_ALL (-1)
/*
* Parse an ELF file contained within provide struct buffer. The ELF header
* is always parsed while the flags value containing the ELF_PARSE_* values
* determine if other parts of the ELF file will be parsed as well.
* Returns 0 on success, < 0 error.
*/
int parse_elf(const struct buffer *pinput, struct parsed_elf *pelf, int flags);
/*
* Clean up memory associated with parsed_elf.
*/
void parsed_elf_destroy(struct parsed_elf *pelf);
int
elf_headers(const struct buffer *pinput,
uint32_t arch,
Elf64_Ehdr *ehdr,
Elf64_Phdr **pphdr,
Elf64_Shdr **pshdr);
#endif /* ELFPARSING_H */
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