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v811_spc009/system/unwinding/libunwindstack/tests/UnwinderTest.cpp

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/*
* Copyright (C) 2017 The Android Open Source Project
*
* 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.
*/
#include <elf.h>
#include <stdint.h>
#include <sys/mman.h>
#include <memory>
#include <set>
#include <string>
#include <gtest/gtest.h>
#include <android-base/silent_death_test.h>
#include <unwindstack/Elf.h>
#include <unwindstack/Maps.h>
#include <unwindstack/Memory.h>
#include <unwindstack/Regs.h>
#include <unwindstack/RegsArm.h>
#include <unwindstack/RegsArm64.h>
#include <unwindstack/RegsMips.h>
#include <unwindstack/RegsMips64.h>
#include <unwindstack/RegsX86.h>
#include <unwindstack/RegsX86_64.h>
#include <unwindstack/Unwinder.h>
#include "ElfFake.h"
#include "ElfTestUtils.h"
#include "MemoryFake.h"
#include "RegsFake.h"
namespace unwindstack {
class UnwinderTest : public ::testing::Test {
protected:
static MapInfo* AddMapInfo(uint64_t start, uint64_t end, uint64_t offset, uint64_t flags,
const char* name, Elf* elf = nullptr) {
std::string str_name(name);
maps_->Add(start, end, offset, flags, name, static_cast<uint64_t>(-1));
MapInfo* map_info = maps_->Find(start);
if (elf != nullptr) {
map_info->set_elf(elf);
}
return map_info;
}
static void SetUpTestSuite() {
maps_.reset(new Maps);
memory_ = new MemoryFake;
process_memory_.reset(memory_);
ElfFake* elf;
ElfInterfaceFake* interface;
MapInfo* map_info;
elf = new ElfFake(new MemoryFake);
interface = new ElfInterfaceFake(nullptr);
interface->FakeSetBuildID("FAKE");
elf->FakeSetInterface(interface);
AddMapInfo(0x1000, 0x8000, 0, PROT_READ | PROT_WRITE, "/system/fake/libc.so", elf);
AddMapInfo(0x10000, 0x12000, 0, PROT_READ | PROT_WRITE, "[stack]");
AddMapInfo(0x13000, 0x15000, 0, PROT_READ | PROT_WRITE | MAPS_FLAGS_DEVICE_MAP,
"/dev/fake_device");
elf = new ElfFake(new MemoryFake);
elf->FakeSetInterface(new ElfInterfaceFake(nullptr));
AddMapInfo(0x20000, 0x22000, 0, PROT_READ | PROT_WRITE, "/system/fake/libunwind.so", elf);
elf = new ElfFake(new MemoryFake);
elf->FakeSetInterface(new ElfInterfaceFake(nullptr));
AddMapInfo(0x23000, 0x24000, 0, PROT_READ | PROT_WRITE, "/fake/libanother.so", elf);
elf = new ElfFake(new MemoryFake);
elf->FakeSetInterface(new ElfInterfaceFake(nullptr));
AddMapInfo(0x33000, 0x34000, 0, PROT_READ | PROT_WRITE, "/fake/compressed.so", elf);
elf = new ElfFake(new MemoryFake);
interface = new ElfInterfaceFake(nullptr);
interface->FakeSetSoname("lib_fake.so");
elf->FakeSetInterface(interface);
map_info = AddMapInfo(0x43000, 0x44000, 0x1d000, PROT_READ | PROT_WRITE, "/fake/fake.apk", elf);
map_info->set_elf_start_offset(0x1d000);
AddMapInfo(0x53000, 0x54000, 0, PROT_READ | PROT_WRITE, "/fake/fake.oat");
map_info =
AddMapInfo(0xa3000, 0xa4000, 0, PROT_READ | PROT_WRITE | PROT_EXEC, "/fake/fake.vdex");
map_info->set_load_bias(0);
elf = new ElfFake(new MemoryFake);
elf->FakeSetInterface(new ElfInterfaceFake(nullptr));
elf->FakeSetLoadBias(0x5000);
AddMapInfo(0xa5000, 0xa6000, 0, PROT_READ | PROT_WRITE | PROT_EXEC, "/fake/fake_load_bias.so",
elf);
elf = new ElfFake(new MemoryFake);
elf->FakeSetInterface(new ElfInterfaceFake(nullptr));
map_info = AddMapInfo(0xa7000, 0xa8000, 0, PROT_READ | PROT_WRITE | PROT_EXEC,
"/fake/fake_offset.oat", elf);
map_info->set_elf_offset(0x8000);
elf = new ElfFake(new MemoryFake);
elf->FakeSetInterface(new ElfInterfaceFake(nullptr));
map_info = AddMapInfo(0xc0000, 0xc1000, 0, PROT_READ | PROT_WRITE | PROT_EXEC,
"/fake/unreadable.so", elf);
map_info->set_memory_backed_elf(true);
elf = new ElfFake(new MemoryFake);
elf->FakeSetInterface(new ElfInterfaceFake(nullptr));
map_info = AddMapInfo(0xc1000, 0xc2000, 0, PROT_READ | PROT_WRITE | PROT_EXEC, "[vdso]", elf);
map_info->set_memory_backed_elf(true);
elf = new ElfFake(new MemoryFake);
elf->FakeSetInterface(new ElfInterfaceFake(nullptr));
map_info = AddMapInfo(0xc2000, 0xc3000, 0, PROT_READ | PROT_WRITE | PROT_EXEC, "", elf);
map_info->set_memory_backed_elf(true);
elf = new ElfFake(new MemoryFake);
elf->FakeSetInterface(new ElfInterfaceFake(nullptr));
map_info = AddMapInfo(0xc3000, 0xc4000, 0, PROT_READ | PROT_WRITE | PROT_EXEC,
"/memfd:/jit-cache", elf);
map_info->set_memory_backed_elf(true);
map_info =
AddMapInfo(0xd0000, 0xd1000, 0x1000, PROT_READ | PROT_WRITE | PROT_EXEC, "/fake/fake.apk");
map_info->set_load_bias(0);
elf = new ElfFake(new MemoryFake);
interface = new ElfInterfaceFake(nullptr);
elf->FakeSetInterface(interface);
interface->FakeSetGlobalVariable("__dex_debug_descriptor", 0x1800);
interface->FakeSetGlobalVariable("__jit_debug_descriptor", 0x1900);
interface->FakeSetDataOffset(0x1000);
interface->FakeSetDataVaddrStart(0x1000);
interface->FakeSetDataVaddrEnd(0x8000);
AddMapInfo(0xf0000, 0xf1000, 0, PROT_READ | PROT_WRITE | PROT_EXEC, "/fake/global.so", elf);
AddMapInfo(0xf1000, 0xf9000, 0x1000, PROT_READ | PROT_WRITE, "/fake/global.so");
// dex debug data
memory_->SetData32(0xf180c, 0xf3000);
memory_->SetData32(0xf3000, 0xf4000);
memory_->SetData32(0xf3004, 0xf4000);
memory_->SetData32(0xf3008, 0xf5000);
// jit debug data
memory_->SetData32(0xf1900, 1);
memory_->SetData32(0xf1904, 0);
memory_->SetData32(0xf1908, 0xf6000);
memory_->SetData32(0xf190c, 0xf6000);
memory_->SetData32(0xf6000, 0);
memory_->SetData32(0xf6004, 0);
memory_->SetData32(0xf6008, 0xf7000);
memory_->SetData32(0xf600c, 0);
memory_->SetData64(0xf6010, 0x1000);
elf = new ElfFake(new MemoryFake);
elf->FakeSetValid(false);
elf->FakeSetLoadBias(0x300);
map_info = AddMapInfo(0x100000, 0x101000, 0x1000, PROT_READ | PROT_WRITE | PROT_EXEC,
"/fake/jit.so", elf);
map_info->set_elf_start_offset(0x100);
map_info->set_offset(0x200);
}
void SetUp() override {
ElfInterfaceFake::FakeClear();
regs_.FakeSetArch(ARCH_ARM);
regs_.FakeSetReturnAddressValid(false);
}
static std::unique_ptr<Maps> maps_;
static RegsFake regs_;
static MemoryFake* memory_;
static std::shared_ptr<Memory> process_memory_;
};
std::unique_ptr<Maps> UnwinderTest::maps_;
RegsFake UnwinderTest::regs_(5);
MemoryFake* UnwinderTest::memory_;
std::shared_ptr<Memory> UnwinderTest::process_memory_(nullptr);
TEST_F(UnwinderTest, multiple_frames) {
ElfInterfaceFake::FakePushFunctionData(FunctionData("Frame0", 0));
ElfInterfaceFake::FakePushFunctionData(FunctionData("Frame1", 1));
ElfInterfaceFake::FakePushFunctionData(FunctionData("Frame2", 2));
regs_.set_pc(0x1000);
regs_.set_sp(0x10000);
ElfInterfaceFake::FakePushStepData(StepData(0x1104, 0x10010, false));
ElfInterfaceFake::FakePushStepData(StepData(0x1204, 0x10020, false));
ElfInterfaceFake::FakePushStepData(StepData(0, 0, true));
Unwinder unwinder(64, maps_.get(), &regs_, process_memory_);
unwinder.Unwind();
EXPECT_EQ(ERROR_NONE, unwinder.LastErrorCode());
EXPECT_EQ(WARNING_NONE, unwinder.warnings());
EXPECT_FALSE(unwinder.elf_from_memory_not_file());
ASSERT_EQ(3U, unwinder.NumFrames());
auto* frame = &unwinder.frames()[0];
EXPECT_EQ(0U, frame->num);
EXPECT_EQ(0U, frame->rel_pc);
EXPECT_EQ(0x1000U, frame->pc);
EXPECT_EQ(0x10000U, frame->sp);
EXPECT_EQ("Frame0", frame->function_name);
EXPECT_EQ(0U, frame->function_offset);
EXPECT_EQ("/system/fake/libc.so", frame->map_name);
EXPECT_EQ(0U, frame->map_elf_start_offset);
EXPECT_EQ(0U, frame->map_exact_offset);
EXPECT_EQ(0x1000U, frame->map_start);
EXPECT_EQ(0x8000U, frame->map_end);
EXPECT_EQ(0U, frame->map_load_bias);
EXPECT_EQ(PROT_READ | PROT_WRITE, frame->map_flags);
frame = &unwinder.frames()[1];
EXPECT_EQ(1U, frame->num);
EXPECT_EQ(0x100U, frame->rel_pc);
EXPECT_EQ(0x1100U, frame->pc);
EXPECT_EQ(0x10010U, frame->sp);
EXPECT_EQ("Frame1", frame->function_name);
EXPECT_EQ(1U, frame->function_offset);
EXPECT_EQ("/system/fake/libc.so", frame->map_name);
EXPECT_EQ(0U, frame->map_elf_start_offset);
EXPECT_EQ(0U, frame->map_exact_offset);
EXPECT_EQ(0x1000U, frame->map_start);
EXPECT_EQ(0x8000U, frame->map_end);
EXPECT_EQ(0U, frame->map_load_bias);
EXPECT_EQ(PROT_READ | PROT_WRITE, frame->map_flags);
frame = &unwinder.frames()[2];
EXPECT_EQ(2U, frame->num);
EXPECT_EQ(0x200U, frame->rel_pc);
EXPECT_EQ(0x1200U, frame->pc);
EXPECT_EQ(0x10020U, frame->sp);
EXPECT_EQ("Frame2", frame->function_name);
EXPECT_EQ(2U, frame->function_offset);
EXPECT_EQ("/system/fake/libc.so", frame->map_name);
EXPECT_EQ(0U, frame->map_elf_start_offset);
EXPECT_EQ(0U, frame->map_exact_offset);
EXPECT_EQ(0x1000U, frame->map_start);
EXPECT_EQ(0x8000U, frame->map_end);
EXPECT_EQ(0U, frame->map_load_bias);
EXPECT_EQ(PROT_READ | PROT_WRITE, frame->map_flags);
}
TEST_F(UnwinderTest, multiple_frames_dont_resolve_names) {
ElfInterfaceFake::FakePushFunctionData(FunctionData("Frame0", 0));
ElfInterfaceFake::FakePushFunctionData(FunctionData("Frame1", 1));
ElfInterfaceFake::FakePushFunctionData(FunctionData("Frame2", 2));
regs_.set_pc(0x1000);
regs_.set_sp(0x10000);
ElfInterfaceFake::FakePushStepData(StepData(0x1104, 0x10010, false));
ElfInterfaceFake::FakePushStepData(StepData(0x1204, 0x10020, false));
ElfInterfaceFake::FakePushStepData(StepData(0, 0, true));
Unwinder unwinder(64, maps_.get(), &regs_, process_memory_);
unwinder.SetResolveNames(false);
unwinder.Unwind();
EXPECT_EQ(ERROR_NONE, unwinder.LastErrorCode());
EXPECT_EQ(WARNING_NONE, unwinder.warnings());
EXPECT_FALSE(unwinder.elf_from_memory_not_file());
ASSERT_EQ(3U, unwinder.NumFrames());
auto* frame = &unwinder.frames()[0];
EXPECT_EQ(0U, frame->num);
EXPECT_EQ(0U, frame->rel_pc);
EXPECT_EQ(0x1000U, frame->pc);
EXPECT_EQ(0x10000U, frame->sp);
EXPECT_EQ("", frame->function_name);
EXPECT_EQ(0U, frame->function_offset);
EXPECT_EQ("", frame->map_name);
EXPECT_EQ(0U, frame->map_elf_start_offset);
EXPECT_EQ(0U, frame->map_exact_offset);
EXPECT_EQ(0x1000U, frame->map_start);
EXPECT_EQ(0x8000U, frame->map_end);
EXPECT_EQ(0U, frame->map_load_bias);
EXPECT_EQ(PROT_READ | PROT_WRITE, frame->map_flags);
frame = &unwinder.frames()[1];
EXPECT_EQ(1U, frame->num);
EXPECT_EQ(0x100U, frame->rel_pc);
EXPECT_EQ(0x1100U, frame->pc);
EXPECT_EQ(0x10010U, frame->sp);
EXPECT_EQ("", frame->function_name);
EXPECT_EQ(0U, frame->function_offset);
EXPECT_EQ("", frame->map_name);
EXPECT_EQ(0U, frame->map_elf_start_offset);
EXPECT_EQ(0U, frame->map_exact_offset);
EXPECT_EQ(0x1000U, frame->map_start);
EXPECT_EQ(0x8000U, frame->map_end);
EXPECT_EQ(0U, frame->map_load_bias);
EXPECT_EQ(PROT_READ | PROT_WRITE, frame->map_flags);
frame = &unwinder.frames()[2];
EXPECT_EQ(2U, frame->num);
EXPECT_EQ(0x200U, frame->rel_pc);
EXPECT_EQ(0x1200U, frame->pc);
EXPECT_EQ(0x10020U, frame->sp);
EXPECT_EQ("", frame->function_name);
EXPECT_EQ(0U, frame->function_offset);
EXPECT_EQ("", frame->map_name);
EXPECT_EQ(0U, frame->map_elf_start_offset);
EXPECT_EQ(0U, frame->map_exact_offset);
EXPECT_EQ(0x1000U, frame->map_start);
EXPECT_EQ(0x8000U, frame->map_end);
EXPECT_EQ(0U, frame->map_load_bias);
EXPECT_EQ(PROT_READ | PROT_WRITE, frame->map_flags);
}
TEST_F(UnwinderTest, non_zero_load_bias) {
ElfInterfaceFake::FakePushFunctionData(FunctionData("Frame0", 0));
regs_.set_pc(0xa5500);
regs_.set_sp(0x10000);
ElfInterfaceFake::FakePushStepData(StepData(0, 0, true));
Unwinder unwinder(64, maps_.get(), &regs_, process_memory_);
unwinder.Unwind();
EXPECT_EQ(ERROR_NONE, unwinder.LastErrorCode());
EXPECT_EQ(WARNING_NONE, unwinder.warnings());
EXPECT_FALSE(unwinder.elf_from_memory_not_file());
ASSERT_EQ(1U, unwinder.NumFrames());
auto* frame = &unwinder.frames()[0];
EXPECT_EQ(0U, frame->num);
EXPECT_EQ(0x5500U, frame->rel_pc);
EXPECT_EQ(0xa5500U, frame->pc);
EXPECT_EQ(0x10000U, frame->sp);
EXPECT_EQ("Frame0", frame->function_name);
EXPECT_EQ(0U, frame->function_offset);
EXPECT_EQ("/fake/fake_load_bias.so", frame->map_name);
EXPECT_EQ(0U, frame->map_elf_start_offset);
EXPECT_EQ(0U, frame->map_exact_offset);
EXPECT_EQ(0xa5000U, frame->map_start);
EXPECT_EQ(0xa6000U, frame->map_end);
EXPECT_EQ(0x5000U, frame->map_load_bias);
EXPECT_EQ(PROT_READ | PROT_WRITE | PROT_EXEC, frame->map_flags);
}
TEST_F(UnwinderTest, non_zero_elf_offset) {
ElfInterfaceFake::FakePushFunctionData(FunctionData("Frame0", 0));
regs_.set_pc(0xa7500);
regs_.set_sp(0x10000);
ElfInterfaceFake::FakePushStepData(StepData(0, 0, true));
Unwinder unwinder(64, maps_.get(), &regs_, process_memory_);
unwinder.Unwind();
EXPECT_EQ(ERROR_NONE, unwinder.LastErrorCode());
EXPECT_EQ(WARNING_NONE, unwinder.warnings());
EXPECT_FALSE(unwinder.elf_from_memory_not_file());
ASSERT_EQ(1U, unwinder.NumFrames());
auto* frame = &unwinder.frames()[0];
EXPECT_EQ(0U, frame->num);
EXPECT_EQ(0x8500U, frame->rel_pc);
EXPECT_EQ(0xa7500U, frame->pc);
EXPECT_EQ(0x10000U, frame->sp);
EXPECT_EQ("Frame0", frame->function_name);
EXPECT_EQ(0U, frame->function_offset);
EXPECT_EQ("/fake/fake_offset.oat", frame->map_name);
EXPECT_EQ(0U, frame->map_elf_start_offset);
EXPECT_EQ(0U, frame->map_exact_offset);
EXPECT_EQ(0xa7000U, frame->map_start);
EXPECT_EQ(0xa8000U, frame->map_end);
EXPECT_EQ(0U, frame->map_load_bias);
EXPECT_EQ(PROT_READ | PROT_WRITE | PROT_EXEC, frame->map_flags);
}
TEST_F(UnwinderTest, non_zero_map_offset) {
ElfInterfaceFake::FakePushFunctionData(FunctionData("Frame0", 0));
regs_.set_pc(0x43000);
regs_.set_sp(0x10000);
ElfInterfaceFake::FakePushStepData(StepData(0, 0, true));
Unwinder unwinder(64, maps_.get(), &regs_, process_memory_);
unwinder.Unwind();
EXPECT_EQ(ERROR_NONE, unwinder.LastErrorCode());
EXPECT_EQ(WARNING_NONE, unwinder.warnings());
EXPECT_FALSE(unwinder.elf_from_memory_not_file());
ASSERT_EQ(1U, unwinder.NumFrames());
auto* frame = &unwinder.frames()[0];
EXPECT_EQ(0U, frame->num);
EXPECT_EQ(0U, frame->rel_pc);
EXPECT_EQ(0x43000U, frame->pc);
EXPECT_EQ(0x10000U, frame->sp);
EXPECT_EQ("Frame0", frame->function_name);
EXPECT_EQ(0U, frame->function_offset);
EXPECT_EQ("/fake/fake.apk!lib_fake.so", frame->map_name);
EXPECT_EQ(0x1d000U, frame->map_elf_start_offset);
EXPECT_EQ(0x1d000U, frame->map_exact_offset);
EXPECT_EQ(0x43000U, frame->map_start);
EXPECT_EQ(0x44000U, frame->map_end);
EXPECT_EQ(0U, frame->map_load_bias);
EXPECT_EQ(PROT_READ | PROT_WRITE, frame->map_flags);
}
TEST_F(UnwinderTest, disable_embedded_soname) {
ElfInterfaceFake::FakePushFunctionData(FunctionData("Frame0", 0));
regs_.set_pc(0x43000);
regs_.set_sp(0x10000);
ElfInterfaceFake::FakePushStepData(StepData(0, 0, true));
Unwinder unwinder(64, maps_.get(), &regs_, process_memory_);
unwinder.SetEmbeddedSoname(false);
unwinder.Unwind();
EXPECT_EQ(ERROR_NONE, unwinder.LastErrorCode());
EXPECT_EQ(WARNING_NONE, unwinder.warnings());
EXPECT_FALSE(unwinder.elf_from_memory_not_file());
ASSERT_EQ(1U, unwinder.NumFrames());
auto* frame = &unwinder.frames()[0];
EXPECT_EQ(0U, frame->num);
EXPECT_EQ(0U, frame->rel_pc);
EXPECT_EQ(0x43000U, frame->pc);
EXPECT_EQ(0x10000U, frame->sp);
EXPECT_EQ("Frame0", frame->function_name);
EXPECT_EQ(0U, frame->function_offset);
EXPECT_EQ("/fake/fake.apk", frame->map_name);
EXPECT_EQ(0x1d000U, frame->map_elf_start_offset);
EXPECT_EQ(0x1d000U, frame->map_exact_offset);
EXPECT_EQ(0x43000U, frame->map_start);
EXPECT_EQ(0x44000U, frame->map_end);
EXPECT_EQ(0U, frame->map_load_bias);
EXPECT_EQ(PROT_READ | PROT_WRITE, frame->map_flags);
}
// Verify that no attempt to continue after the step indicates it is done.
TEST_F(UnwinderTest, no_frames_after_finished) {
ElfInterfaceFake::FakePushFunctionData(FunctionData("Frame0", 0));
ElfInterfaceFake::FakePushFunctionData(FunctionData("Frame1", 1));
ElfInterfaceFake::FakePushFunctionData(FunctionData("Frame2", 2));
ElfInterfaceFake::FakePushFunctionData(FunctionData("Frame3", 3));
ElfInterfaceFake::FakePushFunctionData(FunctionData("Frame4", 4));
regs_.set_pc(0x1000);
regs_.set_sp(0x10000);
ElfInterfaceFake::FakePushStepData(StepData(0x1000, 0x10000, true));
ElfInterfaceFake::FakePushStepData(StepData(0x1102, 0x10010, false));
ElfInterfaceFake::FakePushStepData(StepData(0x1202, 0x10020, false));
Unwinder unwinder(64, maps_.get(), &regs_, process_memory_);
unwinder.Unwind();
EXPECT_EQ(ERROR_NONE, unwinder.LastErrorCode());
EXPECT_EQ(WARNING_NONE, unwinder.warnings());
EXPECT_FALSE(unwinder.elf_from_memory_not_file());
ASSERT_EQ(1U, unwinder.NumFrames());
auto* frame = &unwinder.frames()[0];
EXPECT_EQ(0U, frame->num);
EXPECT_EQ(0U, frame->rel_pc);
EXPECT_EQ(0x1000U, frame->pc);
EXPECT_EQ(0x10000U, frame->sp);
EXPECT_EQ("Frame0", frame->function_name);
EXPECT_EQ(0U, frame->function_offset);
EXPECT_EQ("/system/fake/libc.so", frame->map_name);
EXPECT_EQ(0U, frame->map_elf_start_offset);
EXPECT_EQ(0U, frame->map_exact_offset);
EXPECT_EQ(0x1000U, frame->map_start);
EXPECT_EQ(0x8000U, frame->map_end);
EXPECT_EQ(0U, frame->map_load_bias);
EXPECT_EQ(PROT_READ | PROT_WRITE, frame->map_flags);
}
// Verify the maximum frames to save.
TEST_F(UnwinderTest, max_frames) {
for (size_t i = 0; i < 30; i++) {
ElfInterfaceFake::FakePushFunctionData(FunctionData("Frame" + std::to_string(i), i));
ElfInterfaceFake::FakePushStepData(StepData(0x1104 + i * 0x100, 0x10010 + i * 0x10, false));
}
regs_.set_pc(0x1000);
regs_.set_sp(0x10000);
Unwinder unwinder(20, maps_.get(), &regs_, process_memory_);
unwinder.Unwind();
EXPECT_EQ(ERROR_MAX_FRAMES_EXCEEDED, unwinder.LastErrorCode());
EXPECT_EQ(WARNING_NONE, unwinder.warnings());
EXPECT_FALSE(unwinder.elf_from_memory_not_file());
ASSERT_EQ(20U, unwinder.NumFrames());
for (size_t i = 0; i < 20; i++) {
auto* frame = &unwinder.frames()[i];
EXPECT_EQ(i, frame->num);
EXPECT_EQ(i * 0x100, frame->rel_pc) << "Failed at frame " << i;
EXPECT_EQ(0x1000 + i * 0x100, frame->pc) << "Failed at frame " << i;
EXPECT_EQ(0x10000 + 0x10 * i, frame->sp) << "Failed at frame " << i;
EXPECT_EQ("Frame" + std::to_string(i), frame->function_name) << "Failed at frame " << i;
EXPECT_EQ(i, frame->function_offset) << "Failed at frame " << i;
EXPECT_EQ("/system/fake/libc.so", frame->map_name) << "Failed at frame " << i;
EXPECT_EQ(0U, frame->map_elf_start_offset) << "Failed at frame " << i;
EXPECT_EQ(0U, frame->map_exact_offset) << "Failed at frame " << i;
EXPECT_EQ(0x1000U, frame->map_start) << "Failed at frame " << i;
EXPECT_EQ(0x8000U, frame->map_end) << "Failed at frame " << i;
EXPECT_EQ(0U, frame->map_load_bias) << "Failed at frame " << i;
EXPECT_EQ(PROT_READ | PROT_WRITE, frame->map_flags) << "Failed at frame " << i;
}
}
// Verify that initial map names frames are removed.
TEST_F(UnwinderTest, verify_frames_skipped) {
ElfInterfaceFake::FakePushFunctionData(FunctionData("Frame0", 0));
ElfInterfaceFake::FakePushFunctionData(FunctionData("Frame1", 1));
ElfInterfaceFake::FakePushFunctionData(FunctionData("Frame2", 2));
regs_.set_pc(0x20000);
regs_.set_sp(0x10000);
ElfInterfaceFake::FakePushStepData(StepData(0x23004, 0x10010, false));
ElfInterfaceFake::FakePushStepData(StepData(0x23104, 0x10020, false));
ElfInterfaceFake::FakePushStepData(StepData(0x20004, 0x10030, false));
ElfInterfaceFake::FakePushStepData(StepData(0x21004, 0x10040, false));
ElfInterfaceFake::FakePushStepData(StepData(0x1002, 0x10050, false));
ElfInterfaceFake::FakePushStepData(StepData(0x21004, 0x10060, false));
ElfInterfaceFake::FakePushStepData(StepData(0x23002, 0x10070, false));
ElfInterfaceFake::FakePushStepData(StepData(0, 0, true));
Unwinder unwinder(64, maps_.get(), &regs_, process_memory_);
std::vector<std::string> skip_libs{"libunwind.so", "libanother.so"};
unwinder.Unwind(&skip_libs);
EXPECT_EQ(ERROR_NONE, unwinder.LastErrorCode());
EXPECT_EQ(WARNING_NONE, unwinder.warnings());
EXPECT_FALSE(unwinder.elf_from_memory_not_file());
ASSERT_EQ(3U, unwinder.NumFrames());
auto* frame = &unwinder.frames()[0];
EXPECT_EQ(0U, frame->num);
EXPECT_EQ(0U, frame->rel_pc);
EXPECT_EQ(0x1000U, frame->pc);
EXPECT_EQ(0x10050U, frame->sp);
EXPECT_EQ("Frame0", frame->function_name);
EXPECT_EQ(0U, frame->function_offset);
EXPECT_EQ("/system/fake/libc.so", frame->map_name);
EXPECT_EQ(0U, frame->map_elf_start_offset);
EXPECT_EQ(0U, frame->map_exact_offset);
EXPECT_EQ(0x1000U, frame->map_start);
EXPECT_EQ(0x8000U, frame->map_end);
EXPECT_EQ(0U, frame->map_load_bias);
EXPECT_EQ(PROT_READ | PROT_WRITE, frame->map_flags);
frame = &unwinder.frames()[1];
EXPECT_EQ(1U, frame->num);
EXPECT_EQ(0x1000U, frame->rel_pc);
EXPECT_EQ(0x21000U, frame->pc);
EXPECT_EQ(0x10060U, frame->sp);
EXPECT_EQ("Frame1", frame->function_name);
EXPECT_EQ(1U, frame->function_offset);
EXPECT_EQ("/system/fake/libunwind.so", frame->map_name);
EXPECT_EQ(0U, frame->map_elf_start_offset);
EXPECT_EQ(0U, frame->map_exact_offset);
EXPECT_EQ(0x20000U, frame->map_start);
EXPECT_EQ(0x22000U, frame->map_end);
EXPECT_EQ(0U, frame->map_load_bias);
EXPECT_EQ(PROT_READ | PROT_WRITE, frame->map_flags);
frame = &unwinder.frames()[2];
EXPECT_EQ(2U, frame->num);
EXPECT_EQ(0U, frame->rel_pc);
EXPECT_EQ(0x23000U, frame->pc);
EXPECT_EQ(0x10070U, frame->sp);
EXPECT_EQ("Frame2", frame->function_name);
EXPECT_EQ(2U, frame->function_offset);
EXPECT_EQ("/fake/libanother.so", frame->map_name);
EXPECT_EQ(0U, frame->map_exact_offset);
EXPECT_EQ(0x23000U, frame->map_start);
EXPECT_EQ(0x24000U, frame->map_end);
EXPECT_EQ(0U, frame->map_load_bias);
EXPECT_EQ(PROT_READ | PROT_WRITE, frame->map_flags);
}
// Verify SP in a non-existant map is okay.
TEST_F(UnwinderTest, sp_not_in_map) {
ElfInterfaceFake::FakePushFunctionData(FunctionData("Frame0", 0));
ElfInterfaceFake::FakePushFunctionData(FunctionData("Frame1", 1));
regs_.set_pc(0x1000);
regs_.set_sp(0x63000);
ElfInterfaceFake::FakePushStepData(StepData(0x21004, 0x50020, false));
ElfInterfaceFake::FakePushStepData(StepData(0, 0, true));
Unwinder unwinder(64, maps_.get(), &regs_, process_memory_);
unwinder.Unwind();
EXPECT_EQ(ERROR_NONE, unwinder.LastErrorCode());
EXPECT_EQ(WARNING_NONE, unwinder.warnings());
EXPECT_FALSE(unwinder.elf_from_memory_not_file());
ASSERT_EQ(2U, unwinder.NumFrames());
auto* frame = &unwinder.frames()[0];
EXPECT_EQ(0U, frame->num);
EXPECT_EQ(0U, frame->rel_pc);
EXPECT_EQ(0x1000U, frame->pc);
EXPECT_EQ(0x63000U, frame->sp);
EXPECT_EQ("Frame0", frame->function_name);
EXPECT_EQ(0U, frame->function_offset);
EXPECT_EQ("/system/fake/libc.so", frame->map_name);
EXPECT_EQ(0U, frame->map_exact_offset);
EXPECT_EQ(0x1000U, frame->map_start);
EXPECT_EQ(0x8000U, frame->map_end);
EXPECT_EQ(0U, frame->map_load_bias);
EXPECT_EQ(PROT_READ | PROT_WRITE, frame->map_flags);
frame = &unwinder.frames()[1];
EXPECT_EQ(1U, frame->num);
EXPECT_EQ(0x1000U, frame->rel_pc);
EXPECT_EQ(0x21000U, frame->pc);
EXPECT_EQ(0x50020U, frame->sp);
EXPECT_EQ("Frame1", frame->function_name);
EXPECT_EQ(1U, frame->function_offset);
EXPECT_EQ("/system/fake/libunwind.so", frame->map_name);
EXPECT_EQ(0U, frame->map_exact_offset);
EXPECT_EQ(0x20000U, frame->map_start);
EXPECT_EQ(0x22000U, frame->map_end);
EXPECT_EQ(0U, frame->map_load_bias);
EXPECT_EQ(PROT_READ | PROT_WRITE, frame->map_flags);
}
// Verify PC in a device stops the unwind.
TEST_F(UnwinderTest, pc_in_device_stops_unwind) {
ElfInterfaceFake::FakePushFunctionData(FunctionData("Frame0", 0));
ElfInterfaceFake::FakePushFunctionData(FunctionData("Frame1", 1));
ElfInterfaceFake::FakePushFunctionData(FunctionData("Frame2", 2));
regs_.set_pc(0x13000);
regs_.set_sp(0x10000);
ElfInterfaceFake::FakePushStepData(StepData(0x23002, 0x10010, false));
ElfInterfaceFake::FakePushStepData(StepData(0x23102, 0x10020, false));
ElfInterfaceFake::FakePushStepData(StepData(0, 0, true));
Unwinder unwinder(64, maps_.get(), &regs_, process_memory_);
unwinder.Unwind();
EXPECT_EQ(ERROR_NONE, unwinder.LastErrorCode());
EXPECT_EQ(WARNING_NONE, unwinder.warnings());
EXPECT_FALSE(unwinder.elf_from_memory_not_file());
ASSERT_EQ(1U, unwinder.NumFrames());
}
// Verify SP in a device stops the unwind.
TEST_F(UnwinderTest, sp_in_device_stops_unwind) {
ElfInterfaceFake::FakePushFunctionData(FunctionData("Frame0", 0));
ElfInterfaceFake::FakePushFunctionData(FunctionData("Frame1", 1));
ElfInterfaceFake::FakePushFunctionData(FunctionData("Frame2", 2));
regs_.set_pc(0x1000);
regs_.set_sp(0x13000);
ElfInterfaceFake::FakePushStepData(StepData(0x23002, 0x10010, false));
ElfInterfaceFake::FakePushStepData(StepData(0x23102, 0x10020, false));
ElfInterfaceFake::FakePushStepData(StepData(0, 0, true));
Unwinder unwinder(64, maps_.get(), &regs_, process_memory_);
unwinder.Unwind();
EXPECT_EQ(ERROR_NONE, unwinder.LastErrorCode());
EXPECT_EQ(WARNING_NONE, unwinder.warnings());
EXPECT_FALSE(unwinder.elf_from_memory_not_file());
ASSERT_EQ(1U, unwinder.NumFrames());
}
// Verify a no map info frame gets a frame.
TEST_F(UnwinderTest, pc_without_map) {
ElfInterfaceFake::FakePushFunctionData(FunctionData("Frame0", 0));
regs_.set_pc(0x41000);
regs_.set_sp(0x13000);
Unwinder unwinder(64, maps_.get(), &regs_, process_memory_);
unwinder.Unwind();
EXPECT_EQ(ERROR_INVALID_MAP, unwinder.LastErrorCode());
EXPECT_EQ(WARNING_NONE, unwinder.warnings());
EXPECT_FALSE(unwinder.elf_from_memory_not_file());
ASSERT_EQ(1U, unwinder.NumFrames());
auto* frame = &unwinder.frames()[0];
EXPECT_EQ(0U, frame->num);
EXPECT_EQ(0x41000U, frame->rel_pc);
EXPECT_EQ(0x41000U, frame->pc);
EXPECT_EQ(0x13000U, frame->sp);
EXPECT_EQ("", frame->function_name);
EXPECT_EQ(0U, frame->function_offset);
EXPECT_EQ("", frame->map_name);
EXPECT_EQ(0U, frame->map_elf_start_offset);
EXPECT_EQ(0U, frame->map_exact_offset);
EXPECT_EQ(0U, frame->map_start);
EXPECT_EQ(0U, frame->map_end);
EXPECT_EQ(0U, frame->map_load_bias);
EXPECT_EQ(0, frame->map_flags);
}
// Verify that a speculative frame is added.
TEST_F(UnwinderTest, speculative_frame) {
ElfInterfaceFake::FakePushFunctionData(FunctionData("Frame0", 0));
ElfInterfaceFake::FakePushFunctionData(FunctionData("Frame1", 1));
// Fake as if code called a nullptr function.
regs_.set_pc(0);
regs_.set_sp(0x10000);
regs_.FakeSetReturnAddress(0x1204);
regs_.FakeSetReturnAddressValid(true);
ElfInterfaceFake::FakePushStepData(StepData(0x23104, 0x10020, false));
ElfInterfaceFake::FakePushStepData(StepData(0, 0, true));
Unwinder unwinder(64, maps_.get(), &regs_, process_memory_);
unwinder.Unwind();
EXPECT_EQ(ERROR_NONE, unwinder.LastErrorCode());
EXPECT_EQ(WARNING_NONE, unwinder.warnings());
EXPECT_FALSE(unwinder.elf_from_memory_not_file());
ASSERT_EQ(3U, unwinder.NumFrames());
auto* frame = &unwinder.frames()[0];
EXPECT_EQ(0U, frame->num);
EXPECT_EQ(0U, frame->rel_pc);
EXPECT_EQ(0U, frame->pc);
EXPECT_EQ(0x10000U, frame->sp);
EXPECT_EQ("", frame->function_name);
EXPECT_EQ(0U, frame->function_offset);
EXPECT_EQ("", frame->map_name);
EXPECT_EQ(0U, frame->map_elf_start_offset);
EXPECT_EQ(0U, frame->map_exact_offset);
EXPECT_EQ(0U, frame->map_start);
EXPECT_EQ(0U, frame->map_end);
EXPECT_EQ(0U, frame->map_load_bias);
EXPECT_EQ(0, frame->map_flags);
frame = &unwinder.frames()[1];
EXPECT_EQ(1U, frame->num);
EXPECT_EQ(0x200U, frame->rel_pc);
EXPECT_EQ(0x1200U, frame->pc);
EXPECT_EQ(0x10000U, frame->sp);
EXPECT_EQ("Frame0", frame->function_name);
EXPECT_EQ(0U, frame->function_offset);
EXPECT_EQ("/system/fake/libc.so", frame->map_name);
EXPECT_EQ(0U, frame->map_elf_start_offset);
EXPECT_EQ(0U, frame->map_exact_offset);
EXPECT_EQ(0x1000U, frame->map_start);
EXPECT_EQ(0x8000U, frame->map_end);
EXPECT_EQ(0U, frame->map_load_bias);
EXPECT_EQ(PROT_READ | PROT_WRITE, frame->map_flags);
frame = &unwinder.frames()[2];
EXPECT_EQ(2U, frame->num);
EXPECT_EQ(0x100U, frame->rel_pc);
EXPECT_EQ(0x23100U, frame->pc);
EXPECT_EQ(0x10020U, frame->sp);
EXPECT_EQ("Frame1", frame->function_name);
EXPECT_EQ(1U, frame->function_offset);
EXPECT_EQ("/fake/libanother.so", frame->map_name);
EXPECT_EQ(0U, frame->map_elf_start_offset);
EXPECT_EQ(0U, frame->map_exact_offset);
EXPECT_EQ(0x23000U, frame->map_start);
EXPECT_EQ(0x24000U, frame->map_end);
EXPECT_EQ(0U, frame->map_load_bias);
EXPECT_EQ(PROT_READ | PROT_WRITE, frame->map_flags);
}
// Verify that a speculative frame is added then removed because no other
// frames are added.
TEST_F(UnwinderTest, speculative_frame_removed) {
ElfInterfaceFake::FakePushFunctionData(FunctionData("Frame0", 0));
ElfInterfaceFake::FakePushFunctionData(FunctionData("Frame1", 1));
// Fake as if code called a nullptr function.
regs_.set_pc(0x20000);
regs_.set_sp(0x10000);
ElfInterfaceFake::FakePushStepData(StepData(0, 0x10010, false));
regs_.FakeSetReturnAddress(0x12);
regs_.FakeSetReturnAddressValid(true);
Unwinder unwinder(64, maps_.get(), &regs_, process_memory_);
unwinder.Unwind();
EXPECT_EQ(ERROR_INVALID_MAP, unwinder.LastErrorCode());
EXPECT_EQ(WARNING_NONE, unwinder.warnings());
EXPECT_FALSE(unwinder.elf_from_memory_not_file());
ASSERT_EQ(2U, unwinder.NumFrames());
auto* frame = &unwinder.frames()[0];
EXPECT_EQ(0U, frame->num);
EXPECT_EQ(0U, frame->rel_pc);
EXPECT_EQ(0x20000U, frame->pc);
EXPECT_EQ(0x10000U, frame->sp);
EXPECT_EQ("Frame0", frame->function_name);
EXPECT_EQ(0U, frame->function_offset);
EXPECT_EQ("/system/fake/libunwind.so", frame->map_name);
EXPECT_EQ(0U, frame->map_elf_start_offset);
EXPECT_EQ(0U, frame->map_exact_offset);
EXPECT_EQ(0x20000U, frame->map_start);
EXPECT_EQ(0x22000U, frame->map_end);
EXPECT_EQ(0U, frame->map_load_bias);
EXPECT_EQ(PROT_READ | PROT_WRITE, frame->map_flags);
frame = &unwinder.frames()[1];
EXPECT_EQ(1U, frame->num);
EXPECT_EQ(0U, frame->rel_pc);
EXPECT_EQ(0U, frame->pc);
EXPECT_EQ(0x10010U, frame->sp);
EXPECT_EQ("", frame->function_name);
EXPECT_EQ(0U, frame->function_offset);
EXPECT_EQ("", frame->map_name);
EXPECT_EQ(0U, frame->map_elf_start_offset);
EXPECT_EQ(0U, frame->map_exact_offset);
EXPECT_EQ(0U, frame->map_start);
EXPECT_EQ(0U, frame->map_end);
EXPECT_EQ(0U, frame->map_load_bias);
EXPECT_EQ(0, frame->map_flags);
}
// Verify that a speculative frame is added and left if there are only
// two frames and the pc is in the middle nowhere.
TEST_F(UnwinderTest, speculative_frame_not_removed_pc_bad) {
ElfInterfaceFake::FakePushFunctionData(FunctionData("Frame0", 0));
ElfInterfaceFake::FakePushFunctionData(FunctionData("Frame1", 1));
// Fake as if code called a nullptr function.
regs_.set_pc(0);
regs_.set_sp(0x10000);
regs_.FakeSetReturnAddress(0x1204);
regs_.FakeSetReturnAddressValid(true);
Unwinder unwinder(64, maps_.get(), &regs_, process_memory_);
unwinder.Unwind();
EXPECT_EQ(ERROR_NONE, unwinder.LastErrorCode());
EXPECT_EQ(WARNING_NONE, unwinder.warnings());
EXPECT_FALSE(unwinder.elf_from_memory_not_file());
ASSERT_EQ(2U, unwinder.NumFrames());
auto* frame = &unwinder.frames()[0];
EXPECT_EQ(0U, frame->num);
EXPECT_EQ(0U, frame->rel_pc);
EXPECT_EQ(0U, frame->pc);
EXPECT_EQ(0x10000U, frame->sp);
EXPECT_EQ("", frame->function_name);
EXPECT_EQ(0U, frame->function_offset);
EXPECT_EQ("", frame->map_name);
EXPECT_EQ(0U, frame->map_elf_start_offset);
EXPECT_EQ(0U, frame->map_exact_offset);
EXPECT_EQ(0U, frame->map_start);
EXPECT_EQ(0U, frame->map_end);
EXPECT_EQ(0U, frame->map_load_bias);
EXPECT_EQ(0, frame->map_flags);
frame = &unwinder.frames()[1];
EXPECT_EQ(1U, frame->num);
EXPECT_EQ(0x200U, frame->rel_pc);
EXPECT_EQ(0x1200U, frame->pc);
EXPECT_EQ(0x10000U, frame->sp);
EXPECT_EQ("Frame0", frame->function_name);
EXPECT_EQ(0U, frame->function_offset);
EXPECT_EQ("/system/fake/libc.so", frame->map_name);
EXPECT_EQ(0U, frame->map_elf_start_offset);
EXPECT_EQ(0U, frame->map_exact_offset);
EXPECT_EQ(0x1000U, frame->map_start);
EXPECT_EQ(0x8000U, frame->map_end);
EXPECT_EQ(0U, frame->map_load_bias);
EXPECT_EQ(PROT_READ | PROT_WRITE, frame->map_flags);
}
// Verify that a speculative frame does not cause a crash when it wasn't
// really added due to a filter.
TEST_F(UnwinderTest, speculative_frame_check_with_no_frames) {
regs_.set_pc(0x23000);
regs_.set_sp(0x10000);
regs_.FakeSetReturnAddress(0x23100);
regs_.FakeSetReturnAddressValid(true);
Unwinder unwinder(64, maps_.get(), &regs_, process_memory_);
std::vector<std::string> skip_names{"libanother.so"};
unwinder.Unwind(&skip_names);
EXPECT_EQ(ERROR_NONE, unwinder.LastErrorCode());
EXPECT_EQ(WARNING_NONE, unwinder.warnings());
EXPECT_FALSE(unwinder.elf_from_memory_not_file());
ASSERT_EQ(0U, unwinder.NumFrames());
}
// Verify that an unwind stops when a frame is in given suffix.
TEST_F(UnwinderTest, map_ignore_suffixes) {
ElfInterfaceFake::FakePushFunctionData(FunctionData("Frame0", 0));
ElfInterfaceFake::FakePushFunctionData(FunctionData("Frame1", 1));
ElfInterfaceFake::FakePushFunctionData(FunctionData("Frame2", 2));
ElfInterfaceFake::FakePushFunctionData(FunctionData("Frame3", 3));
// Fake as if code called a nullptr function.
regs_.set_pc(0x1000);
regs_.set_sp(0x10000);
ElfInterfaceFake::FakePushStepData(StepData(0x43404, 0x10010, false));
ElfInterfaceFake::FakePushStepData(StepData(0x53504, 0x10020, false));
ElfInterfaceFake::FakePushStepData(StepData(0, 0, true));
Unwinder unwinder(64, maps_.get(), &regs_, process_memory_);
std::vector<std::string> suffixes{"oat"};
unwinder.Unwind(nullptr, &suffixes);
EXPECT_EQ(ERROR_NONE, unwinder.LastErrorCode());
EXPECT_EQ(WARNING_NONE, unwinder.warnings());
EXPECT_FALSE(unwinder.elf_from_memory_not_file());
ASSERT_EQ(2U, unwinder.NumFrames());
// Make sure the elf was not initialized.
MapInfo* map_info = maps_->Find(0x53000);
ASSERT_TRUE(map_info != nullptr);
EXPECT_TRUE(map_info->elf() == nullptr);
auto* frame = &unwinder.frames()[0];
EXPECT_EQ(0U, frame->num);
EXPECT_EQ(0U, frame->rel_pc);
EXPECT_EQ(0x1000U, frame->pc);
EXPECT_EQ(0x10000U, frame->sp);
EXPECT_EQ("Frame0", frame->function_name);
EXPECT_EQ(0U, frame->function_offset);
EXPECT_EQ("/system/fake/libc.so", frame->map_name);
EXPECT_EQ(0U, frame->map_elf_start_offset);
EXPECT_EQ(0U, frame->map_exact_offset);
EXPECT_EQ(0x1000U, frame->map_start);
EXPECT_EQ(0x8000U, frame->map_end);
EXPECT_EQ(0U, frame->map_load_bias);
EXPECT_EQ(PROT_READ | PROT_WRITE, frame->map_flags);
frame = &unwinder.frames()[1];
EXPECT_EQ(1U, frame->num);
EXPECT_EQ(0x400U, frame->rel_pc);
EXPECT_EQ(0x43400U, frame->pc);
EXPECT_EQ(0x10010U, frame->sp);
EXPECT_EQ("Frame1", frame->function_name);
EXPECT_EQ(1U, frame->function_offset);
EXPECT_EQ("/fake/fake.apk!lib_fake.so", frame->map_name);
EXPECT_EQ(0x1d000U, frame->map_elf_start_offset);
EXPECT_EQ(0x1d000U, frame->map_exact_offset);
EXPECT_EQ(0x43000U, frame->map_start);
EXPECT_EQ(0x44000U, frame->map_end);
EXPECT_EQ(0U, frame->map_load_bias);
EXPECT_EQ(PROT_READ | PROT_WRITE, frame->map_flags);
}
// Verify that an unwind stops when the sp and pc don't change.
TEST_F(UnwinderTest, sp_pc_do_not_change) {
ElfInterfaceFake::FakePushFunctionData(FunctionData("Frame0", 0));
ElfInterfaceFake::FakePushFunctionData(FunctionData("Frame1", 1));
ElfInterfaceFake::FakePushFunctionData(FunctionData("Frame2", 2));
ElfInterfaceFake::FakePushFunctionData(FunctionData("Frame3", 3));
ElfInterfaceFake::FakePushFunctionData(FunctionData("Frame4", 4));
regs_.set_pc(0x1000);
regs_.set_sp(0x10000);
ElfInterfaceFake::FakePushStepData(StepData(0x33404, 0x10010, false));
ElfInterfaceFake::FakePushStepData(StepData(0x33504, 0x10020, false));
ElfInterfaceFake::FakePushStepData(StepData(0x33504, 0x10020, false));
ElfInterfaceFake::FakePushStepData(StepData(0x33504, 0x10020, false));
ElfInterfaceFake::FakePushStepData(StepData(0x33504, 0x10020, false));
ElfInterfaceFake::FakePushStepData(StepData(0, 0, true));
Unwinder unwinder(64, maps_.get(), &regs_, process_memory_);
unwinder.Unwind();
EXPECT_EQ(ERROR_REPEATED_FRAME, unwinder.LastErrorCode());
EXPECT_EQ(WARNING_NONE, unwinder.warnings());
EXPECT_FALSE(unwinder.elf_from_memory_not_file());
ASSERT_EQ(3U, unwinder.NumFrames());
auto* frame = &unwinder.frames()[0];
EXPECT_EQ(0U, frame->num);
EXPECT_EQ(0U, frame->rel_pc);
EXPECT_EQ(0x1000U, frame->pc);
EXPECT_EQ(0x10000U, frame->sp);
EXPECT_EQ("Frame0", frame->function_name);
EXPECT_EQ(0U, frame->function_offset);
EXPECT_EQ("/system/fake/libc.so", frame->map_name);
EXPECT_EQ(0U, frame->map_elf_start_offset);
EXPECT_EQ(0U, frame->map_exact_offset);
EXPECT_EQ(0x1000U, frame->map_start);
EXPECT_EQ(0x8000U, frame->map_end);
EXPECT_EQ(0U, frame->map_load_bias);
EXPECT_EQ(PROT_READ | PROT_WRITE, frame->map_flags);
frame = &unwinder.frames()[1];
EXPECT_EQ(1U, frame->num);
EXPECT_EQ(0x400U, frame->rel_pc);
EXPECT_EQ(0x33400U, frame->pc);
EXPECT_EQ(0x10010U, frame->sp);
EXPECT_EQ("Frame1", frame->function_name);
EXPECT_EQ(1U, frame->function_offset);
EXPECT_EQ("/fake/compressed.so", frame->map_name);
EXPECT_EQ(0U, frame->map_elf_start_offset);
EXPECT_EQ(0U, frame->map_exact_offset);
EXPECT_EQ(0x33000U, frame->map_start);
EXPECT_EQ(0x34000U, frame->map_end);
EXPECT_EQ(0U, frame->map_load_bias);
EXPECT_EQ(PROT_READ | PROT_WRITE, frame->map_flags);
frame = &unwinder.frames()[2];
EXPECT_EQ(2U, frame->num);
EXPECT_EQ(0x500U, frame->rel_pc);
EXPECT_EQ(0x33500U, frame->pc);
EXPECT_EQ(0x10020U, frame->sp);
EXPECT_EQ("Frame2", frame->function_name);
EXPECT_EQ(2U, frame->function_offset);
EXPECT_EQ("/fake/compressed.so", frame->map_name);
EXPECT_EQ(0U, frame->map_elf_start_offset);
EXPECT_EQ(0U, frame->map_exact_offset);
EXPECT_EQ(0x33000U, frame->map_start);
EXPECT_EQ(0x34000U, frame->map_end);
EXPECT_EQ(0U, frame->map_load_bias);
EXPECT_EQ(PROT_READ | PROT_WRITE, frame->map_flags);
}
TEST_F(UnwinderTest, dex_pc_in_map) {
ElfInterfaceFake::FakePushFunctionData(FunctionData("Frame0", 0));
regs_.set_pc(0x1000);
regs_.set_sp(0x10000);
regs_.FakeSetDexPc(0xa3400);
Unwinder unwinder(64, maps_.get(), &regs_, process_memory_);
unwinder.Unwind();
EXPECT_EQ(ERROR_NONE, unwinder.LastErrorCode());
EXPECT_EQ(WARNING_NONE, unwinder.warnings());
EXPECT_FALSE(unwinder.elf_from_memory_not_file());
ASSERT_EQ(2U, unwinder.NumFrames());
auto* frame = &unwinder.frames()[0];
EXPECT_EQ(0U, frame->num);
EXPECT_EQ(0x400U, frame->rel_pc);
EXPECT_EQ(0xa3400U, frame->pc);
EXPECT_EQ(0x10000U, frame->sp);
EXPECT_EQ("", frame->function_name);
EXPECT_EQ(0U, frame->function_offset);
EXPECT_EQ("/fake/fake.vdex", frame->map_name);
EXPECT_EQ(0U, frame->map_elf_start_offset);
EXPECT_EQ(0U, frame->map_exact_offset);
EXPECT_EQ(0xa3000U, frame->map_start);
EXPECT_EQ(0xa4000U, frame->map_end);
EXPECT_EQ(0U, frame->map_load_bias);
EXPECT_EQ(PROT_READ | PROT_WRITE | PROT_EXEC, frame->map_flags);
frame = &unwinder.frames()[1];
EXPECT_EQ(1U, frame->num);
EXPECT_EQ(0U, frame->rel_pc);
EXPECT_EQ(0x1000U, frame->pc);
EXPECT_EQ(0x10000U, frame->sp);
EXPECT_EQ("Frame0", frame->function_name);
EXPECT_EQ(0U, frame->function_offset);
EXPECT_EQ("/system/fake/libc.so", frame->map_name);
EXPECT_EQ(0U, frame->map_elf_start_offset);
EXPECT_EQ(0U, frame->map_exact_offset);
EXPECT_EQ(0x1000U, frame->map_start);
EXPECT_EQ(0x8000U, frame->map_end);
EXPECT_EQ(0U, frame->map_load_bias);
EXPECT_EQ(PROT_READ | PROT_WRITE, frame->map_flags);
}
TEST_F(UnwinderTest, dex_pc_in_map_non_zero_offset) {
ElfInterfaceFake::FakePushFunctionData(FunctionData("Frame0", 0));
regs_.set_pc(0x1000);
regs_.set_sp(0x10000);
regs_.FakeSetDexPc(0xd0400);
Unwinder unwinder(64, maps_.get(), &regs_, process_memory_);
unwinder.Unwind();
EXPECT_EQ(ERROR_NONE, unwinder.LastErrorCode());
EXPECT_EQ(WARNING_NONE, unwinder.warnings());
EXPECT_FALSE(unwinder.elf_from_memory_not_file());
ASSERT_EQ(2U, unwinder.NumFrames());
auto* frame = &unwinder.frames()[0];
EXPECT_EQ(0U, frame->num);
EXPECT_EQ(0x400U, frame->rel_pc);
EXPECT_EQ(0xd0400U, frame->pc);
EXPECT_EQ(0x10000U, frame->sp);
EXPECT_EQ("", frame->function_name);
EXPECT_EQ(0U, frame->function_offset);
EXPECT_EQ("/fake/fake.apk", frame->map_name);
EXPECT_EQ(0x1000U, frame->map_elf_start_offset);
EXPECT_EQ(0x1000U, frame->map_exact_offset);
EXPECT_EQ(0xd0000U, frame->map_start);
EXPECT_EQ(0xd1000U, frame->map_end);
EXPECT_EQ(0U, frame->map_load_bias);
EXPECT_EQ(PROT_READ | PROT_WRITE | PROT_EXEC, frame->map_flags);
frame = &unwinder.frames()[1];
EXPECT_EQ(1U, frame->num);
EXPECT_EQ(0U, frame->rel_pc);
EXPECT_EQ(0x1000U, frame->pc);
EXPECT_EQ(0x10000U, frame->sp);
EXPECT_EQ("Frame0", frame->function_name);
EXPECT_EQ(0U, frame->function_offset);
EXPECT_EQ("/system/fake/libc.so", frame->map_name);
EXPECT_EQ(0U, frame->map_elf_start_offset);
EXPECT_EQ(0U, frame->map_exact_offset);
EXPECT_EQ(0x1000U, frame->map_start);
EXPECT_EQ(0x8000U, frame->map_end);
EXPECT_EQ(0U, frame->map_load_bias);
EXPECT_EQ(PROT_READ | PROT_WRITE, frame->map_flags);
}
TEST_F(UnwinderTest, dex_pc_not_in_map) {
ElfInterfaceFake::FakePushFunctionData(FunctionData("Frame0", 0));
regs_.set_pc(0x1000);
regs_.set_sp(0x10000);
regs_.FakeSetDexPc(0x50000);
Unwinder unwinder(64, maps_.get(), &regs_, process_memory_);
unwinder.Unwind();
EXPECT_EQ(ERROR_NONE, unwinder.LastErrorCode());
EXPECT_EQ(WARNING_DEX_PC_NOT_IN_MAP, unwinder.warnings());
EXPECT_FALSE(unwinder.elf_from_memory_not_file());
ASSERT_EQ(2U, unwinder.NumFrames());
auto* frame = &unwinder.frames()[0];
EXPECT_EQ(0U, frame->num);
EXPECT_EQ(0x50000U, frame->rel_pc);
EXPECT_EQ(0x50000U, frame->pc);
EXPECT_EQ(0x10000U, frame->sp);
EXPECT_EQ("", frame->function_name);
EXPECT_EQ(0U, frame->function_offset);
EXPECT_EQ("", frame->map_name);
EXPECT_EQ(0U, frame->map_elf_start_offset);
EXPECT_EQ(0U, frame->map_exact_offset);
EXPECT_EQ(0U, frame->map_start);
EXPECT_EQ(0U, frame->map_end);
EXPECT_EQ(0U, frame->map_load_bias);
EXPECT_EQ(0, frame->map_flags);
frame = &unwinder.frames()[1];
EXPECT_EQ(1U, frame->num);
EXPECT_EQ(0U, frame->rel_pc);
EXPECT_EQ(0x1000U, frame->pc);
EXPECT_EQ(0x10000U, frame->sp);
EXPECT_EQ("Frame0", frame->function_name);
EXPECT_EQ(0U, frame->function_offset);
EXPECT_EQ("/system/fake/libc.so", frame->map_name);
EXPECT_EQ(0U, frame->map_elf_start_offset);
EXPECT_EQ(0U, frame->map_exact_offset);
EXPECT_EQ(0x1000U, frame->map_start);
EXPECT_EQ(0x8000U, frame->map_end);
EXPECT_EQ(0U, frame->map_load_bias);
EXPECT_EQ(PROT_READ | PROT_WRITE, frame->map_flags);
}
TEST_F(UnwinderTest, dex_pc_not_in_map_valid_dex_files) {
ElfInterfaceFake::FakePushFunctionData(FunctionData("Frame0", 0));
regs_.set_pc(0x1000);
regs_.set_sp(0x10000);
regs_.FakeSetDexPc(0x50000);
std::unique_ptr<DexFiles> dex_files = CreateDexFiles(regs_.Arch(), process_memory_);
Unwinder unwinder(64, maps_.get(), &regs_, process_memory_);
unwinder.SetDexFiles(dex_files.get());
unwinder.Unwind();
EXPECT_EQ(ERROR_NONE, unwinder.LastErrorCode());
EXPECT_EQ(WARNING_DEX_PC_NOT_IN_MAP, unwinder.warnings());
EXPECT_FALSE(unwinder.elf_from_memory_not_file());
ASSERT_EQ(2U, unwinder.NumFrames());
auto* frame = &unwinder.frames()[0];
EXPECT_EQ(0U, frame->num);
EXPECT_EQ(0x50000U, frame->rel_pc);
EXPECT_EQ(0x50000U, frame->pc);
EXPECT_EQ(0x10000U, frame->sp);
EXPECT_EQ("", frame->function_name);
EXPECT_EQ(0U, frame->function_offset);
EXPECT_EQ("", frame->map_name);
EXPECT_EQ(0U, frame->map_elf_start_offset);
EXPECT_EQ(0U, frame->map_exact_offset);
EXPECT_EQ(0U, frame->map_start);
EXPECT_EQ(0U, frame->map_end);
EXPECT_EQ(0U, frame->map_load_bias);
EXPECT_EQ(0, frame->map_flags);
frame = &unwinder.frames()[1];
EXPECT_EQ(1U, frame->num);
EXPECT_EQ(0U, frame->rel_pc);
EXPECT_EQ(0x1000U, frame->pc);
EXPECT_EQ(0x10000U, frame->sp);
EXPECT_EQ("Frame0", frame->function_name);
EXPECT_EQ(0U, frame->function_offset);
EXPECT_EQ("/system/fake/libc.so", frame->map_name);
EXPECT_EQ(0U, frame->map_elf_start_offset);
EXPECT_EQ(0U, frame->map_exact_offset);
EXPECT_EQ(0x1000U, frame->map_start);
EXPECT_EQ(0x8000U, frame->map_end);
EXPECT_EQ(0U, frame->map_load_bias);
EXPECT_EQ(PROT_READ | PROT_WRITE, frame->map_flags);
}
TEST_F(UnwinderTest, dex_pc_multiple_frames) {
ElfInterfaceFake::FakePushFunctionData(FunctionData("Frame0", 0));
ElfInterfaceFake::FakePushFunctionData(FunctionData("Frame1", 1));
regs_.set_pc(0x1000);
regs_.set_sp(0x10000);
regs_.FakeSetDexPc(0xa3400);
ElfInterfaceFake::FakePushStepData(StepData(0x33404, 0x10010, false));
ElfInterfaceFake::FakePushStepData(StepData(0, 0, true));
Unwinder unwinder(64, maps_.get(), &regs_, process_memory_);
unwinder.Unwind();
EXPECT_EQ(ERROR_NONE, unwinder.LastErrorCode());
EXPECT_EQ(WARNING_NONE, unwinder.warnings());
EXPECT_FALSE(unwinder.elf_from_memory_not_file());
ASSERT_EQ(3U, unwinder.NumFrames());
auto* frame = &unwinder.frames()[0];
EXPECT_EQ(0U, frame->num);
EXPECT_EQ(0x400U, frame->rel_pc);
EXPECT_EQ(0xa3400U, frame->pc);
EXPECT_EQ(0x10000U, frame->sp);
EXPECT_EQ("", frame->function_name);
EXPECT_EQ(0U, frame->function_offset);
EXPECT_EQ("/fake/fake.vdex", frame->map_name);
EXPECT_EQ(0U, frame->map_elf_start_offset);
EXPECT_EQ(0U, frame->map_exact_offset);
EXPECT_EQ(0xa3000U, frame->map_start);
EXPECT_EQ(0xa4000U, frame->map_end);
EXPECT_EQ(0U, frame->map_load_bias);
EXPECT_EQ(PROT_READ | PROT_WRITE | PROT_EXEC, frame->map_flags);
frame = &unwinder.frames()[1];
EXPECT_EQ(1U, frame->num);
EXPECT_EQ(0U, frame->rel_pc);
EXPECT_EQ(0x1000U, frame->pc);
EXPECT_EQ(0x10000U, frame->sp);
EXPECT_EQ("Frame0", frame->function_name);
EXPECT_EQ(0U, frame->function_offset);
EXPECT_EQ("/system/fake/libc.so", frame->map_name);
EXPECT_EQ(0U, frame->map_elf_start_offset);
EXPECT_EQ(0U, frame->map_exact_offset);
EXPECT_EQ(0x1000U, frame->map_start);
EXPECT_EQ(0x8000U, frame->map_end);
EXPECT_EQ(0U, frame->map_load_bias);
EXPECT_EQ(PROT_READ | PROT_WRITE, frame->map_flags);
frame = &unwinder.frames()[2];
EXPECT_EQ(2U, frame->num);
EXPECT_EQ(0x400U, frame->rel_pc);
EXPECT_EQ(0x33400U, frame->pc);
EXPECT_EQ(0x10010U, frame->sp);
EXPECT_EQ("Frame1", frame->function_name);
EXPECT_EQ(1U, frame->function_offset);
EXPECT_EQ("/fake/compressed.so", frame->map_name);
EXPECT_EQ(0U, frame->map_elf_start_offset);
EXPECT_EQ(0U, frame->map_exact_offset);
EXPECT_EQ(0x33000U, frame->map_start);
EXPECT_EQ(0x34000U, frame->map_end);
EXPECT_EQ(0U, frame->map_load_bias);
EXPECT_EQ(PROT_READ | PROT_WRITE, frame->map_flags);
}
TEST_F(UnwinderTest, dex_pc_max_frames) {
ElfInterfaceFake::FakePushFunctionData(FunctionData("Frame0", 0));
regs_.set_pc(0x1000);
regs_.set_sp(0x10000);
regs_.FakeSetDexPc(0xa3400);
Unwinder unwinder(1, maps_.get(), &regs_, process_memory_);
unwinder.Unwind();
EXPECT_EQ(ERROR_MAX_FRAMES_EXCEEDED, unwinder.LastErrorCode());
EXPECT_EQ(WARNING_NONE, unwinder.warnings());
EXPECT_FALSE(unwinder.elf_from_memory_not_file());
ASSERT_EQ(1U, unwinder.NumFrames());
auto* frame = &unwinder.frames()[0];
EXPECT_EQ(0U, frame->num);
EXPECT_EQ(0x400U, frame->rel_pc);
EXPECT_EQ(0xa3400U, frame->pc);
EXPECT_EQ(0x10000U, frame->sp);
EXPECT_EQ("", frame->function_name);
EXPECT_EQ(0U, frame->function_offset);
EXPECT_EQ("/fake/fake.vdex", frame->map_name);
EXPECT_EQ(0U, frame->map_elf_start_offset);
EXPECT_EQ(0U, frame->map_exact_offset);
EXPECT_EQ(0xa3000U, frame->map_start);
EXPECT_EQ(0xa4000U, frame->map_end);
EXPECT_EQ(0U, frame->map_load_bias);
EXPECT_EQ(PROT_READ | PROT_WRITE | PROT_EXEC, frame->map_flags);
}
TEST_F(UnwinderTest, elf_from_memory_not_file) {
ElfInterfaceFake::FakePushFunctionData(FunctionData("Frame0", 0));
regs_.set_pc(0xc0050);
regs_.set_sp(0x10000);
ElfInterfaceFake::FakePushStepData(StepData(0, 0, true));
Unwinder unwinder(64, maps_.get(), &regs_, process_memory_);
unwinder.Unwind();
EXPECT_EQ(ERROR_NONE, unwinder.LastErrorCode());
EXPECT_EQ(WARNING_NONE, unwinder.warnings());
EXPECT_TRUE(unwinder.elf_from_memory_not_file());
ASSERT_EQ(1U, unwinder.NumFrames());
auto* frame = &unwinder.frames()[0];
EXPECT_EQ(0U, frame->num);
EXPECT_EQ(0x50U, frame->rel_pc);
EXPECT_EQ(0xc0050U, frame->pc);
EXPECT_EQ(0x10000U, frame->sp);
EXPECT_EQ("Frame0", frame->function_name);
EXPECT_EQ(0U, frame->function_offset);
EXPECT_EQ("/fake/unreadable.so", frame->map_name);
EXPECT_EQ(0U, frame->map_elf_start_offset);
EXPECT_EQ(0U, frame->map_exact_offset);
EXPECT_EQ(0xc0000U, frame->map_start);
EXPECT_EQ(0xc1000U, frame->map_end);
EXPECT_EQ(0U, frame->map_load_bias);
EXPECT_EQ(PROT_READ | PROT_WRITE | PROT_EXEC, frame->map_flags);
}
TEST_F(UnwinderTest, elf_from_memory_but_no_valid_file_with_bracket) {
ElfInterfaceFake::FakePushFunctionData(FunctionData("Frame0", 0));
regs_.set_pc(0xc1050);
regs_.set_sp(0x10000);
ElfInterfaceFake::FakePushStepData(StepData(0, 0, true));
Unwinder unwinder(64, maps_.get(), &regs_, process_memory_);
unwinder.Unwind();
EXPECT_EQ(ERROR_NONE, unwinder.LastErrorCode());
EXPECT_EQ(WARNING_NONE, unwinder.warnings());
EXPECT_FALSE(unwinder.elf_from_memory_not_file());
ASSERT_EQ(1U, unwinder.NumFrames());
auto* frame = &unwinder.frames()[0];
EXPECT_EQ(0U, frame->num);
EXPECT_EQ(0x50U, frame->rel_pc);
EXPECT_EQ(0xc1050U, frame->pc);
EXPECT_EQ(0x10000U, frame->sp);
EXPECT_EQ("Frame0", frame->function_name);
EXPECT_EQ(0U, frame->function_offset);
EXPECT_EQ("[vdso]", frame->map_name);
EXPECT_EQ(0U, frame->map_elf_start_offset);
EXPECT_EQ(0U, frame->map_exact_offset);
EXPECT_EQ(0xc1000U, frame->map_start);
EXPECT_EQ(0xc2000U, frame->map_end);
EXPECT_EQ(0U, frame->map_load_bias);
EXPECT_EQ(PROT_READ | PROT_WRITE | PROT_EXEC, frame->map_flags);
}
TEST_F(UnwinderTest, elf_from_memory_but_empty_filename) {
ElfInterfaceFake::FakePushFunctionData(FunctionData("Frame0", 0));
regs_.set_pc(0xc2050);
regs_.set_sp(0x10000);
ElfInterfaceFake::FakePushStepData(StepData(0, 0, true));
Unwinder unwinder(64, maps_.get(), &regs_, process_memory_);
unwinder.Unwind();
EXPECT_EQ(ERROR_NONE, unwinder.LastErrorCode());
EXPECT_EQ(WARNING_NONE, unwinder.warnings());
EXPECT_FALSE(unwinder.elf_from_memory_not_file());
ASSERT_EQ(1U, unwinder.NumFrames());
auto* frame = &unwinder.frames()[0];
EXPECT_EQ(0U, frame->num);
EXPECT_EQ(0x50U, frame->rel_pc);
EXPECT_EQ(0xc2050U, frame->pc);
EXPECT_EQ(0x10000U, frame->sp);
EXPECT_EQ("Frame0", frame->function_name);
EXPECT_EQ(0U, frame->function_offset);
EXPECT_EQ("", frame->map_name);
EXPECT_EQ(0U, frame->map_elf_start_offset);
EXPECT_EQ(0U, frame->map_exact_offset);
EXPECT_EQ(0xc2000U, frame->map_start);
EXPECT_EQ(0xc3000U, frame->map_end);
EXPECT_EQ(0U, frame->map_load_bias);
EXPECT_EQ(PROT_READ | PROT_WRITE | PROT_EXEC, frame->map_flags);
}
TEST_F(UnwinderTest, elf_from_memory_but_from_memfd) {
ElfInterfaceFake::FakePushFunctionData(FunctionData("Frame0", 0));
regs_.set_pc(0xc3050);
regs_.set_sp(0x10000);
ElfInterfaceFake::FakePushStepData(StepData(0, 0, true));
Unwinder unwinder(64, maps_.get(), &regs_, process_memory_);
unwinder.Unwind();
EXPECT_EQ(ERROR_NONE, unwinder.LastErrorCode());
EXPECT_EQ(WARNING_NONE, unwinder.warnings());
EXPECT_FALSE(unwinder.elf_from_memory_not_file());
ASSERT_EQ(1U, unwinder.NumFrames());
auto* frame = &unwinder.frames()[0];
EXPECT_EQ(0U, frame->num);
EXPECT_EQ(0x50U, frame->rel_pc);
EXPECT_EQ(0xc3050U, frame->pc);
EXPECT_EQ(0x10000U, frame->sp);
EXPECT_EQ("Frame0", frame->function_name);
EXPECT_EQ(0U, frame->function_offset);
EXPECT_EQ("/memfd:/jit-cache", frame->map_name);
EXPECT_EQ(0U, frame->map_elf_start_offset);
EXPECT_EQ(0U, frame->map_exact_offset);
EXPECT_EQ(0xc3000U, frame->map_start);
EXPECT_EQ(0xc4000U, frame->map_end);
EXPECT_EQ(0U, frame->map_load_bias);
EXPECT_EQ(PROT_READ | PROT_WRITE | PROT_EXEC, frame->map_flags);
}
// Verify format frame code.
TEST_F(UnwinderTest, format_frame) {
RegsFake regs_arm(10);
regs_arm.FakeSetArch(ARCH_ARM);
Unwinder unwinder32(10, maps_.get(), &regs_arm, process_memory_);
RegsFake regs_arm64(10);
regs_arm64.FakeSetArch(ARCH_ARM64);
Unwinder unwinder64(10, maps_.get(), &regs_arm64, process_memory_);
FrameData frame;
frame.num = 1;
frame.rel_pc = 0x1000;
frame.pc = 0x4000;
frame.sp = 0x1000;
frame.function_name = "function";
frame.function_offset = 100;
frame.map_name = "/fake/libfake.so";
frame.map_elf_start_offset = 0x2000;
frame.map_start = 0x3000;
frame.map_end = 0x6000;
frame.map_flags = PROT_READ;
EXPECT_EQ(" #01 pc 0000000000001000 /fake/libfake.so (offset 0x2000) (function+100)",
unwinder64.FormatFrame(frame));
EXPECT_EQ(" #01 pc 00001000 /fake/libfake.so (offset 0x2000) (function+100)",
unwinder32.FormatFrame(frame));
frame.map_elf_start_offset = 0;
EXPECT_EQ(" #01 pc 0000000000001000 /fake/libfake.so (function+100)",
unwinder64.FormatFrame(frame));
EXPECT_EQ(" #01 pc 00001000 /fake/libfake.so (function+100)", unwinder32.FormatFrame(frame));
frame.function_offset = 0;
EXPECT_EQ(" #01 pc 0000000000001000 /fake/libfake.so (function)",
unwinder64.FormatFrame(frame));
EXPECT_EQ(" #01 pc 00001000 /fake/libfake.so (function)", unwinder32.FormatFrame(frame));
// Verify the function name is demangled.
frame.function_name = "_ZN4funcEv";
EXPECT_EQ(" #01 pc 0000000000001000 /fake/libfake.so (func())", unwinder64.FormatFrame(frame));
EXPECT_EQ(" #01 pc 00001000 /fake/libfake.so (func())", unwinder32.FormatFrame(frame));
frame.function_name = "";
EXPECT_EQ(" #01 pc 0000000000001000 /fake/libfake.so", unwinder64.FormatFrame(frame));
EXPECT_EQ(" #01 pc 00001000 /fake/libfake.so", unwinder32.FormatFrame(frame));
frame.map_name = "";
EXPECT_EQ(" #01 pc 0000000000001000 <anonymous:3000>", unwinder64.FormatFrame(frame));
EXPECT_EQ(" #01 pc 00001000 <anonymous:3000>", unwinder32.FormatFrame(frame));
frame.map_start = 0;
frame.map_end = 0;
EXPECT_EQ(" #01 pc 0000000000001000 <unknown>", unwinder64.FormatFrame(frame));
EXPECT_EQ(" #01 pc 00001000 <unknown>", unwinder32.FormatFrame(frame));
}
TEST_F(UnwinderTest, format_frame_build_id) {
RegsFake regs(10);
regs.FakeSetArch(ARCH_ARM);
Unwinder unwinder(10, maps_.get(), &regs, process_memory_);
FrameData frame;
frame.num = 1;
frame.rel_pc = 0x1000;
frame.pc = 0x4000;
frame.sp = 0x1000;
frame.function_name = "function";
frame.function_offset = 100;
frame.map_name = "/fake/libfake.so";
frame.map_elf_start_offset = 0;
frame.map_start = 0x3000;
frame.map_end = 0x6000;
frame.map_flags = PROT_READ;
EXPECT_EQ(" #01 pc 00001000 /fake/libfake.so (function+100)", unwinder.FormatFrame(frame));
unwinder.SetDisplayBuildID(true);
EXPECT_EQ(" #01 pc 00001000 /fake/libfake.so (function+100) (BuildId: 46414b45)",
unwinder.FormatFrame(frame));
}
static std::string ArchToString(ArchEnum arch) {
if (arch == ARCH_ARM) {
return "Arm";
} else if (arch == ARCH_ARM64) {
return "Arm64";
} else if (arch == ARCH_X86) {
return "X86";
} else if (arch == ARCH_X86_64) {
return "X86_64";
} else {
return "Unknown";
}
}
// Verify format frame code.
TEST_F(UnwinderTest, format_frame_by_arch) {
std::vector<Regs*> reg_list;
RegsArm* arm = new RegsArm;
arm->set_pc(0x2300);
arm->set_sp(0x10000);
reg_list.push_back(arm);
RegsArm64* arm64 = new RegsArm64;
arm64->set_pc(0x2300);
arm64->set_sp(0x10000);
reg_list.push_back(arm64);
RegsX86* x86 = new RegsX86;
x86->set_pc(0x2300);
x86->set_sp(0x10000);
reg_list.push_back(x86);
RegsX86_64* x86_64 = new RegsX86_64;
x86_64->set_pc(0x2300);
x86_64->set_sp(0x10000);
reg_list.push_back(x86_64);
RegsMips* mips = new RegsMips;
mips->set_pc(0x2300);
mips->set_sp(0x10000);
reg_list.push_back(mips);
RegsMips64* mips64 = new RegsMips64;
mips64->set_pc(0x2300);
mips64->set_sp(0x10000);
reg_list.push_back(mips64);
for (auto regs : reg_list) {
ElfInterfaceFake::FakePushFunctionData(FunctionData("Frame0", 10));
Unwinder unwinder(64, maps_.get(), regs, process_memory_);
unwinder.Unwind();
ASSERT_EQ(1U, unwinder.NumFrames());
std::string expected;
switch (regs->Arch()) {
case ARCH_ARM:
case ARCH_X86:
case ARCH_MIPS:
expected = " #00 pc 00001300 /system/fake/libc.so (Frame0+10)";
break;
case ARCH_ARM64:
case ARCH_X86_64:
case ARCH_MIPS64:
expected = " #00 pc 0000000000001300 /system/fake/libc.so (Frame0+10)";
break;
default:
expected = "";
}
EXPECT_EQ(expected, unwinder.FormatFrame(0))
<< "Mismatch of frame format for regs arch " << ArchToString(regs->Arch());
delete regs;
}
}
TEST_F(UnwinderTest, build_frame_pc_only_errors) {
RegsFake regs(10);
regs.FakeSetArch(ARCH_ARM);
Unwinder unwinder(10, maps_.get(), &regs, process_memory_);
FrameData frame;
// Pc not in map
frame = unwinder.BuildFrameFromPcOnly(0x10);
EXPECT_EQ(0x10U, frame.pc);
EXPECT_EQ(0x10U, frame.rel_pc);
// No regs set
unwinder.SetRegs(nullptr);
frame = unwinder.BuildFrameFromPcOnly(0x100310);
EXPECT_EQ(0x100310U, frame.pc);
EXPECT_EQ(0x100310U, frame.rel_pc);
unwinder.SetRegs(&regs);
// Invalid elf
frame = unwinder.BuildFrameFromPcOnly(0x100310);
EXPECT_EQ(0x10030eU, frame.pc);
EXPECT_EQ(0x60eU, frame.rel_pc);
EXPECT_EQ("/fake/jit.so", frame.map_name);
EXPECT_EQ(0x100U, frame.map_elf_start_offset);
EXPECT_EQ(0x200U, frame.map_exact_offset);
EXPECT_EQ(0x100000U, frame.map_start);
EXPECT_EQ(0x101000U, frame.map_end);
EXPECT_EQ(PROT_READ | PROT_WRITE | PROT_EXEC, frame.map_flags);
EXPECT_EQ(0x300U, frame.map_load_bias);
EXPECT_EQ("", frame.function_name);
EXPECT_EQ(0U, frame.function_offset);
}
TEST_F(UnwinderTest, build_frame_pc_valid_elf) {
RegsFake regs(10);
regs.FakeSetArch(ARCH_ARM);
Unwinder unwinder(10, maps_.get(), &regs, process_memory_);
FrameData frame;
// Valid elf, no function data.
frame = unwinder.BuildFrameFromPcOnly(0x1010);
EXPECT_EQ(0x100cU, frame.pc);
EXPECT_EQ(0xcU, frame.rel_pc);
EXPECT_EQ("/system/fake/libc.so", frame.map_name);
EXPECT_EQ(0U, frame.map_elf_start_offset);
EXPECT_EQ(0U, frame.map_exact_offset);
EXPECT_EQ(0x1000U, frame.map_start);
EXPECT_EQ(0x8000U, frame.map_end);
EXPECT_EQ(PROT_READ | PROT_WRITE, frame.map_flags);
EXPECT_EQ(0U, frame.map_load_bias);
EXPECT_EQ("", frame.function_name);
EXPECT_EQ(0U, frame.function_offset);
// Valid elf, function data present, but do not resolve.
ElfInterfaceFake::FakePushFunctionData(FunctionData("Frame0", 10));
unwinder.SetResolveNames(false);
frame = unwinder.BuildFrameFromPcOnly(0x1010);
EXPECT_EQ(0x100cU, frame.pc);
EXPECT_EQ(0xcU, frame.rel_pc);
EXPECT_EQ("/system/fake/libc.so", frame.map_name);
EXPECT_EQ(0U, frame.map_elf_start_offset);
EXPECT_EQ(0U, frame.map_exact_offset);
EXPECT_EQ(0x1000U, frame.map_start);
EXPECT_EQ(0x8000U, frame.map_end);
EXPECT_EQ(PROT_READ | PROT_WRITE, frame.map_flags);
EXPECT_EQ(0U, frame.map_load_bias);
EXPECT_EQ("", frame.function_name);
EXPECT_EQ(0U, frame.function_offset);
// Valid elf, function data present.
unwinder.SetResolveNames(true);
frame = unwinder.BuildFrameFromPcOnly(0x1010);
EXPECT_EQ(0x100cU, frame.pc);
EXPECT_EQ(0xcU, frame.rel_pc);
EXPECT_EQ("/system/fake/libc.so", frame.map_name);
EXPECT_EQ(0U, frame.map_elf_start_offset);
EXPECT_EQ(0U, frame.map_exact_offset);
EXPECT_EQ(0x1000U, frame.map_start);
EXPECT_EQ(0x8000U, frame.map_end);
EXPECT_EQ(PROT_READ | PROT_WRITE, frame.map_flags);
EXPECT_EQ(0U, frame.map_load_bias);
EXPECT_EQ("Frame0", frame.function_name);
EXPECT_EQ(10U, frame.function_offset);
}
TEST_F(UnwinderTest, build_frame_pc_in_jit) {
// The whole ELF will be copied (read), so it must be valid (readable) memory.
memory_->SetMemoryBlock(0xf7000, 0x1000, 0);
Elf32_Ehdr ehdr = {};
TestInitEhdr<Elf32_Ehdr>(&ehdr, ELFCLASS32, EM_ARM);
ehdr.e_phoff = 0x50;
ehdr.e_phnum = 1;
ehdr.e_phentsize = sizeof(Elf32_Phdr);
ehdr.e_shoff = 0x100;
ehdr.e_shstrndx = 1;
ehdr.e_shentsize = sizeof(Elf32_Shdr);
ehdr.e_shnum = 3;
memory_->SetMemory(0xf7000, &ehdr, sizeof(ehdr));
Elf32_Phdr phdr = {};
phdr.p_flags = PF_X;
phdr.p_type = PT_LOAD;
phdr.p_offset = 0x100000;
phdr.p_vaddr = 0x100000;
phdr.p_memsz = 0x1000;
memory_->SetMemory(0xf7050, &phdr, sizeof(phdr));
Elf32_Shdr shdr = {};
shdr.sh_type = SHT_NULL;
memory_->SetMemory(0xf7100, &shdr, sizeof(shdr));
shdr.sh_type = SHT_SYMTAB;
shdr.sh_link = 2;
shdr.sh_addr = 0x300;
shdr.sh_offset = 0x300;
shdr.sh_entsize = sizeof(Elf32_Sym);
shdr.sh_size = shdr.sh_entsize;
memory_->SetMemory(0xf7100 + sizeof(shdr), &shdr, sizeof(shdr));
memset(&shdr, 0, sizeof(shdr));
shdr.sh_type = SHT_STRTAB;
shdr.sh_name = 0x500;
shdr.sh_offset = 0x400;
shdr.sh_size = 0x100;
memory_->SetMemory(0xf7100 + 2 * sizeof(shdr), &shdr, sizeof(shdr));
Elf32_Sym sym = {};
sym.st_shndx = 2;
sym.st_info = STT_FUNC;
sym.st_value = 0x100300;
sym.st_size = 0x100;
sym.st_name = 1;
memory_->SetMemory(0xf7300, &sym, sizeof(sym));
memory_->SetMemory(0xf7401, "FakeJitFunction");
RegsFake regs(10);
regs.FakeSetArch(ARCH_ARM);
std::unique_ptr<JitDebug> jit_debug = CreateJitDebug(regs.Arch(), process_memory_);
Unwinder unwinder(10, maps_.get(), &regs, process_memory_);
unwinder.SetJitDebug(jit_debug.get());
FrameData frame = unwinder.BuildFrameFromPcOnly(0x100310);
EXPECT_EQ(0x10030eU, frame.pc);
EXPECT_EQ(0x60eU, frame.rel_pc);
EXPECT_EQ("/fake/jit.so", frame.map_name);
EXPECT_EQ(0x100U, frame.map_elf_start_offset);
EXPECT_EQ(0x200U, frame.map_exact_offset);
EXPECT_EQ(0x100000U, frame.map_start);
EXPECT_EQ(0x101000U, frame.map_end);
EXPECT_EQ(PROT_READ | PROT_WRITE | PROT_EXEC, frame.map_flags);
EXPECT_EQ(0U, frame.map_load_bias);
EXPECT_EQ("FakeJitFunction", frame.function_name);
EXPECT_EQ(0xeU, frame.function_offset);
}
TEST_F(UnwinderTest, unwinder_from_pid_set_process_memory) {
auto process_memory = Memory::CreateProcessMemoryCached(getpid());
UnwinderFromPid unwinder(10, getpid());
unwinder.SetProcessMemory(process_memory);
unwinder.SetArch(unwindstack::Regs::CurrentArch());
ASSERT_TRUE(unwinder.Init());
ASSERT_EQ(process_memory.get(), unwinder.GetProcessMemory().get());
}
using UnwinderDeathTest = SilentDeathTest;
TEST_F(UnwinderDeathTest, unwinder_from_pid_init_error) {
UnwinderFromPid unwinder(10, getpid());
ASSERT_DEATH(unwinder.Init(), "");
}
TEST_F(UnwinderDeathTest, set_jit_debug_error) {
Maps maps;
std::shared_ptr<Memory> process_memory(new MemoryFake);
Unwinder unwinder(10, &maps, process_memory);
ASSERT_DEATH(CreateJitDebug(ARCH_UNKNOWN, process_memory), "");
}
TEST_F(UnwinderDeathTest, set_dex_files_error) {
Maps maps;
std::shared_ptr<Memory> process_memory(new MemoryFake);
Unwinder unwinder(10, &maps, process_memory);
ASSERT_DEATH(CreateDexFiles(ARCH_UNKNOWN, process_memory), "");
}
} // namespace unwindstack
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