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/*!A cross-platform build utility based on Lua
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* Copyright (C) 2015-present, Xmake Open Source Community.
*
* @author ruki
* @file readsyms.c
*
*/
/* //////////////////////////////////////////////////////////////////////////////////////
* trace
*/
#define TB_TRACE_MODULE_NAME "readsyms"
#define TB_TRACE_MODULE_DEBUG (0)
/* //////////////////////////////////////////////////////////////////////////////////////
* includes
*/
#include "prefix.h"
#include "coff/prefix.h"
#include "elf/prefix.h"
#include "macho/prefix.h"
/* //////////////////////////////////////////////////////////////////////////////////////
* forward declarations
*/
extern tb_bool_t xm_binutils_coff_read_symbols(tb_stream_ref_t istream, tb_hize_t base_offset, lua_State *lua);
extern tb_bool_t xm_binutils_elf_read_symbols(tb_stream_ref_t istream, tb_hize_t base_offset, lua_State *lua);
extern tb_bool_t xm_binutils_macho_read_symbols(tb_stream_ref_t istream, tb_hize_t base_offset, lua_State *lua);
extern tb_bool_t xm_binutils_ar_read_symbols(tb_stream_ref_t istream, tb_hize_t base_offset, lua_State *lua);
extern tb_bool_t xm_binutils_mslib_read_symbols(tb_stream_ref_t istream, tb_hize_t base_offset, lua_State *lua);
extern tb_bool_t xm_binutils_wasm_read_symbols(tb_stream_ref_t istream, tb_hize_t base_offset, lua_State *lua);
/* //////////////////////////////////////////////////////////////////////////////////////
* implementation
*/
/* read symbols from object file (auto-detect format)
*
* @param lua the lua state
* @return 1 on success (table on stack), 2 on failure (with error message on stack)
*/
tb_int_t xm_binutils_readsyms(lua_State *lua) {
tb_assert_and_check_return_val(lua, 0);
// get the object file path
tb_char_t const *objectfile = luaL_checkstring(lua, 1);
tb_check_return_val(objectfile, 0);
// open file
tb_stream_ref_t istream = tb_stream_init_from_file(objectfile, TB_FILE_MODE_RO);
if (!istream) {
lua_pushboolean(lua, tb_false);
lua_pushfstring(lua, "open %s failed", objectfile);
return 2;
}
tb_bool_t ok = tb_false;
do {
if (!tb_stream_open(istream)) {
lua_pushboolean(lua, tb_false);
lua_pushfstring(lua, "open %s failed", objectfile);
break;
}
// detect format
tb_int_t format = xm_binutils_format_detect(istream);
if (format < 0) {
lua_pushboolean(lua, tb_false);
lua_pushfstring(lua, "cannot detect file format");
break;
}
// create result list
lua_newtable(lua);
// read symbols based on format
if (format == XM_BINUTILS_FORMAT_AR) {
// AR archive (.a or .lib)
tb_bool_t is_mslib = tb_false;
if (objectfile) {
tb_size_t len = tb_strlen(objectfile);
if (len > 4 && tb_stricmp(objectfile + len - 4, ".lib") == 0) {
is_mslib = tb_true;
}
}
if (is_mslib) {
if (!xm_binutils_mslib_read_symbols(istream, 0, lua)) {
// fallback to ar
if (!xm_binutils_ar_read_symbols(istream, 0, lua)) {
lua_pushboolean(lua, tb_false);
lua_pushfstring(lua, "read AR/MSLIB archive symbols failed");
break;
}
}
} else {
if (!xm_binutils_ar_read_symbols(istream, 0, lua)) {
lua_pushboolean(lua, tb_false);
lua_pushfstring(lua, "read AR archive symbols failed");
break;
}
}
} else {
// single object file (COFF, ELF, Mach-O)
// create entry table
lua_newtable(lua);
// object name
lua_pushstring(lua, "objectfile");
tb_char_t const* name = tb_strrchr(objectfile, '/');
if (!name) {
name = tb_strrchr(objectfile, '\\');
}
if (!name) {
name = objectfile;
} else {
name++;
}
lua_pushstring(lua, name);
lua_settable(lua, -3);
// symbols
lua_pushstring(lua, "symbols");
tb_bool_t read_ok = tb_false;
if (format == XM_BINUTILS_FORMAT_COFF) {
read_ok = xm_binutils_coff_read_symbols(istream, 0, lua);
} else if (format == XM_BINUTILS_FORMAT_ELF) {
read_ok = xm_binutils_elf_read_symbols(istream, 0, lua);
} else if (format == XM_BINUTILS_FORMAT_MACHO) {
read_ok = xm_binutils_macho_read_symbols(istream, 0, lua);
} else if (format == XM_BINUTILS_FORMAT_WASM) {
read_ok = xm_binutils_wasm_read_symbols(istream, 0, lua);
}
if (read_ok) {
lua_settable(lua, -3);
lua_rawseti(lua, -2, 1);
} else {
lua_pop(lua, 2); // pop entry table and result list
lua_pushboolean(lua, tb_false);
lua_pushfstring(lua, "read symbols failed");
break;
}
}
ok = tb_true;
} while (0);
if (istream) {
tb_stream_clos(istream);
}
istream = tb_null;
return ok ? 1 : 2;
}
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