d06001d6e0
Add an ArchEnum to express the arch of the Elf objects and Reg objects. Split out the regs code into per arch pieces and generic parts. Also, split out the header files for each arch. Do not break out the test code yet, there isn't enough and it doesn't help to maintain the tests. Test: libunwindstack/libbacktrace/debuggerd unit tests pass. Test: Running debuggerd -b <PIDS> yields valid data on bullhead. Change-Id: If61f6c730c9ff2249f986b41de8c4d62f7158325
155 lines
4.9 KiB
C++
155 lines
4.9 KiB
C++
/*
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* Copyright (C) 2017 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 <inttypes.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <gtest/gtest.h>
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#include <string>
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#include <vector>
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#include <unwindstack/Maps.h>
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#include <unwindstack/Memory.h>
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#include <unwindstack/RegsArm.h>
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#include <unwindstack/RegsArm64.h>
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#include <unwindstack/Unwinder.h>
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#include "MachineArm.h"
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#include "MachineArm64.h"
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#include "ElfTestUtils.h"
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namespace unwindstack {
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static std::string DumpFrames(Unwinder& unwinder) {
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std::string str;
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for (size_t i = 0; i < unwinder.NumFrames(); i++) {
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str += unwinder.FormatFrame(i) + "\n";
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}
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return str;
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}
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TEST(UnwindOfflineTest, pc_straddle_arm32) {
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std::string dir(TestGetFileDirectory() + "offline/straddle_arm32/");
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MemoryOffline* memory = new MemoryOffline;
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ASSERT_TRUE(memory->Init((dir + "stack.data").c_str(), 0));
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FILE* fp = fopen((dir + "regs.txt").c_str(), "r");
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ASSERT_TRUE(fp != nullptr);
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RegsArm regs;
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uint64_t reg_value;
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ASSERT_EQ(1, fscanf(fp, "pc: %" SCNx64 "\n", ®_value));
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regs[ARM_REG_PC] = reg_value;
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ASSERT_EQ(1, fscanf(fp, "sp: %" SCNx64 "\n", ®_value));
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regs[ARM_REG_SP] = reg_value;
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ASSERT_EQ(1, fscanf(fp, "lr: %" SCNx64 "\n", ®_value));
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regs[ARM_REG_LR] = reg_value;
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regs.SetFromRaw();
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fclose(fp);
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fp = fopen((dir + "maps.txt").c_str(), "r");
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ASSERT_TRUE(fp != nullptr);
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// The file is guaranteed to be less than 4096 bytes.
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std::vector<char> buffer(4096);
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ASSERT_NE(0U, fread(buffer.data(), 1, buffer.size(), fp));
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fclose(fp);
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BufferMaps maps(buffer.data());
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ASSERT_TRUE(maps.Parse());
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ASSERT_EQ(ARCH_ARM, regs.Arch());
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std::shared_ptr<Memory> process_memory(memory);
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char* cwd = getcwd(nullptr, 0);
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ASSERT_EQ(0, chdir(dir.c_str()));
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Unwinder unwinder(128, &maps, ®s, process_memory);
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unwinder.Unwind();
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ASSERT_EQ(0, chdir(cwd));
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free(cwd);
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std::string frame_info(DumpFrames(unwinder));
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ASSERT_EQ(4U, unwinder.NumFrames()) << "Unwind:\n" << frame_info;
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EXPECT_EQ(
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" #00 pc 0001a9f8 libc.so (abort+63)\n"
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" #01 pc 00006a1b libbase.so (_ZN7android4base14DefaultAborterEPKc+6)\n"
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" #02 pc 00007441 libbase.so (_ZN7android4base10LogMessageD2Ev+748)\n"
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" #03 pc 00015149 /does/not/exist/libhidlbase.so\n",
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frame_info);
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}
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TEST(UnwindOfflineTest, pc_straddle_arm64) {
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std::string dir(TestGetFileDirectory() + "offline/straddle_arm64/");
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MemoryOffline* memory = new MemoryOffline;
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ASSERT_TRUE(memory->Init((dir + "stack.data").c_str(), 0));
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FILE* fp = fopen((dir + "regs.txt").c_str(), "r");
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ASSERT_TRUE(fp != nullptr);
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RegsArm64 regs;
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uint64_t reg_value;
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ASSERT_EQ(1, fscanf(fp, "pc: %" SCNx64 "\n", ®_value));
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regs[ARM64_REG_PC] = reg_value;
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ASSERT_EQ(1, fscanf(fp, "sp: %" SCNx64 "\n", ®_value));
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regs[ARM64_REG_SP] = reg_value;
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ASSERT_EQ(1, fscanf(fp, "lr: %" SCNx64 "\n", ®_value));
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regs[ARM64_REG_LR] = reg_value;
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ASSERT_EQ(1, fscanf(fp, "x29: %" SCNx64 "\n", ®_value));
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regs[ARM64_REG_R29] = reg_value;
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regs.SetFromRaw();
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fclose(fp);
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fp = fopen((dir + "maps.txt").c_str(), "r");
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ASSERT_TRUE(fp != nullptr);
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// The file is guaranteed to be less than 4096 bytes.
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std::vector<char> buffer(4096);
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ASSERT_NE(0U, fread(buffer.data(), 1, buffer.size(), fp));
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fclose(fp);
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BufferMaps maps(buffer.data());
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ASSERT_TRUE(maps.Parse());
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ASSERT_EQ(ARCH_ARM64, regs.Arch());
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std::shared_ptr<Memory> process_memory(memory);
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char* cwd = getcwd(nullptr, 0);
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ASSERT_EQ(0, chdir(dir.c_str()));
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Unwinder unwinder(128, &maps, ®s, process_memory);
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unwinder.Unwind();
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ASSERT_EQ(0, chdir(cwd));
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free(cwd);
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std::string frame_info(DumpFrames(unwinder));
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ASSERT_EQ(6U, unwinder.NumFrames()) << "Unwind:\n" << frame_info;
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EXPECT_EQ(
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" #00 pc 0000000000429fd8 libunwindstack_test (SignalInnerFunction+24)\n"
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" #01 pc 000000000042a078 libunwindstack_test (SignalMiddleFunction+8)\n"
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" #02 pc 000000000042a08c libunwindstack_test (SignalOuterFunction+8)\n"
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" #03 pc 000000000042d8fc libunwindstack_test "
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"(_ZN11unwindstackL19RemoteThroughSignalEij+20)\n"
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" #04 pc 000000000042d8d8 libunwindstack_test "
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"(_ZN11unwindstack37UnwindTest_remote_through_signal_Test8TestBodyEv+32)\n"
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" #05 pc 0000000000455d70 libunwindstack_test (_ZN7testing4Test3RunEv+392)\n",
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frame_info);
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}
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} // namespace unwindstack
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