mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
83 lines
2.2 KiB
C++
83 lines
2.2 KiB
C++
/* -*- Mode: C++ -*- */
|
|
/* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
|
|
#ifndef elf_symbol_table_h__
|
|
#define elf_symbol_table_h__
|
|
|
|
/*
|
|
|
|
Utility class for reading ELF symbol tables.
|
|
|
|
*/
|
|
|
|
#include <elf.h>
|
|
#include <sys/mman.h>
|
|
|
|
#include "interval_map.h"
|
|
|
|
class elf_symbol_table {
|
|
protected:
|
|
int m_fd;
|
|
void *m_mapping;
|
|
size_t m_size;
|
|
const char *m_strtab;
|
|
const Elf32_Sym *m_symbols;
|
|
int m_nsymbols;
|
|
int m_text_shndx;
|
|
|
|
typedef interval_map<unsigned int, const Elf32_Sym *> rsymtab_t;
|
|
rsymtab_t m_rsymtab;
|
|
|
|
int verify_elf_header(const Elf32_Ehdr *hdr);
|
|
int finish();
|
|
|
|
public:
|
|
elf_symbol_table()
|
|
: m_fd(-1),
|
|
m_mapping(MAP_FAILED),
|
|
m_size(0),
|
|
m_strtab(0),
|
|
m_symbols(0),
|
|
m_nsymbols(0),
|
|
m_text_shndx(0) {}
|
|
|
|
~elf_symbol_table() { finish(); }
|
|
|
|
/**
|
|
* Read the symbol table information from the specified file. (This will
|
|
* memory-map the file.)
|
|
*
|
|
* Currently, only symbols from the `.text' section are loaded.
|
|
*/
|
|
int init(const char *file);
|
|
|
|
/**
|
|
* Determine what symbol the specified image address corresponds
|
|
* to. Addresses need not refer to a symbol's start address:
|
|
* symbol size information is used to reverse-map the address.
|
|
*/
|
|
const Elf32_Sym *lookup(unsigned int addr) const;
|
|
|
|
/**
|
|
* Determine the symbol name for the specified symbol.
|
|
*/
|
|
const char *get_symbol_name(const Elf32_Sym *sym) const;
|
|
|
|
/**
|
|
* Return `true' if the specified symbol is a function.
|
|
*/
|
|
bool is_function(const Elf32_Sym *sym) const {
|
|
return (sym->st_size > 0) &&
|
|
(ELF32_ST_TYPE(sym->st_info) == STT_FUNC) &&
|
|
(sym->st_shndx == m_text_shndx); }
|
|
|
|
typedef const Elf32_Sym *const_iterator;
|
|
|
|
const_iterator begin() const { return const_iterator(m_symbols); }
|
|
const_iterator end() const { return const_iterator(m_symbols + m_nsymbols); }
|
|
};
|
|
|
|
#endif // elf_symbol_table_h__
|