d226a51409
- Add namespace unwindstack everywhere so that it's easier for other code to use the library. - Move some of the header files into include/unwindstack so that they can be exposed. - Modify the headers so that only a limited number need to be exposed. - Update the tools to use the new headers. - Add a GetLoadBias() call on the Elf object. This prevents the need to get the interface object out of the Elf object. - Move the GetRelPc() call out of the Reg class, to the Elf class. It's not always the case that a Reg object will be around when you want to get a relative pc. The tests for this moved to ElfTest.cpp. Bug: 23762183 Test: Unit tests pass. Change-Id: Iac609dac1dd90ed83d1a1e24ff2579c96c023bc3
98 lines
2.6 KiB
C++
98 lines
2.6 KiB
C++
/*
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* Copyright (C) 2016 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <elf.h>
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#include <errno.h>
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#include <inttypes.h>
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#include <stdio.h>
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#include <string.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include <unwindstack/Elf.h>
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#include <unwindstack/Log.h>
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#include <unwindstack/Memory.h>
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int main(int argc, char** argv) {
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if (argc != 2) {
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printf("Need to pass the name of an elf file to the program.\n");
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return 1;
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}
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struct stat st;
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if (stat(argv[1], &st) == -1) {
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printf("Cannot stat %s: %s\n", argv[1], strerror(errno));
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return 1;
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}
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if (!S_ISREG(st.st_mode)) {
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printf("%s is not a regular file.\n", argv[1]);
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return 1;
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}
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// Send all log messages to stdout.
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unwindstack::log_to_stdout(true);
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unwindstack::MemoryFileAtOffset* memory = new unwindstack::MemoryFileAtOffset;
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if (!memory->Init(argv[1], 0)) {
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printf("Failed to init\n");
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return 1;
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}
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unwindstack::Elf elf(memory);
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if (!elf.Init() || !elf.valid()) {
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printf("%s is not a valid elf file.\n", argv[1]);
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return 1;
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}
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switch (elf.machine_type()) {
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case EM_ARM:
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printf("ABI: arm\n");
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break;
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case EM_AARCH64:
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printf("ABI: arm64\n");
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break;
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case EM_386:
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printf("ABI: x86\n");
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break;
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case EM_X86_64:
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printf("ABI: x86_64\n");
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break;
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default:
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printf("ABI: unknown\n");
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return 1;
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}
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// This is a crude way to get the symbols in order.
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std::string name;
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uint64_t load_bias = elf.interface()->load_bias();
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for (const auto& entry : elf.interface()->pt_loads()) {
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uint64_t start = entry.second.offset + load_bias;
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uint64_t end = entry.second.table_size + load_bias;
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for (uint64_t addr = start; addr < end; addr += 4) {
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std::string cur_name;
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uint64_t func_offset;
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if (elf.GetFunctionName(addr, &cur_name, &func_offset)) {
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if (cur_name != name) {
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printf("<0x%" PRIx64 "> Function: %s\n", addr - func_offset, cur_name.c_str());
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}
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name = cur_name;
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}
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}
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}
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return 0;
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}
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