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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 <stdint.h>
#include <gtest/gtest.h>
#include <unwindstack/Elf.h>
#include <unwindstack/MachineArm.h>
#include <unwindstack/MachineArm64.h>
#include <unwindstack/MachineMips.h>
#include <unwindstack/MachineMips64.h>
#include <unwindstack/MachineX86.h>
#include <unwindstack/MachineX86_64.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 "MemoryFake.h"
namespace unwindstack {
class RegsStepIfSignalHandlerTest : public ::testing::Test {
protected:
void SetUp() override {
elf_memory_ = new MemoryFake;
elf_.reset(new Elf(elf_memory_));
}
void ArmStepIfSignalHandlerNonRt(uint32_t pc_data);
void ArmStepIfSignalHandlerRt(uint32_t pc_data);
MemoryFake* elf_memory_;
MemoryFake process_memory_;
std::unique_ptr<Elf> elf_;
};
void RegsStepIfSignalHandlerTest::ArmStepIfSignalHandlerNonRt(uint32_t pc_data) {
uint64_t addr = 0x1000;
RegsArm regs;
regs[ARM_REG_PC] = 0x5000;
regs[ARM_REG_SP] = addr;
elf_memory_->SetData32(0x5000, pc_data);
for (uint64_t index = 0; index <= 30; index++) {
process_memory_.SetData32(addr + index * 4, index * 0x10);
}
ASSERT_TRUE(regs.StepIfSignalHandler(0x5000, elf_.get(), &process_memory_));
EXPECT_EQ(0x100U, regs[ARM_REG_SP]);
EXPECT_EQ(0x120U, regs[ARM_REG_PC]);
EXPECT_EQ(0x100U, regs.sp());
EXPECT_EQ(0x120U, regs.pc());
}
TEST_F(RegsStepIfSignalHandlerTest, arm_step_if_signal_handler_non_rt) {
// Form 1
ArmStepIfSignalHandlerNonRt(0xe3a07077);
// Form 2
ArmStepIfSignalHandlerNonRt(0xef900077);
// Form 3
ArmStepIfSignalHandlerNonRt(0xdf002777);
}
void RegsStepIfSignalHandlerTest::ArmStepIfSignalHandlerRt(uint32_t pc_data) {
uint64_t addr = 0x1000;
RegsArm regs;
regs[ARM_REG_PC] = 0x5000;
regs[ARM_REG_SP] = addr;
elf_memory_->SetData32(0x5000, pc_data);
for (uint64_t index = 0; index <= 100; index++) {
process_memory_.SetData32(addr + index * 4, index * 0x10);
}
ASSERT_TRUE(regs.StepIfSignalHandler(0x5000, elf_.get(), &process_memory_));
EXPECT_EQ(0x350U, regs[ARM_REG_SP]);
EXPECT_EQ(0x370U, regs[ARM_REG_PC]);
EXPECT_EQ(0x350U, regs.sp());
EXPECT_EQ(0x370U, regs.pc());
}
TEST_F(RegsStepIfSignalHandlerTest, arm_step_if_signal_handler_rt) {
// Form 1
ArmStepIfSignalHandlerRt(0xe3a070ad);
// Form 2
ArmStepIfSignalHandlerRt(0xef9000ad);
// Form 3
ArmStepIfSignalHandlerRt(0xdf0027ad);
}
TEST_F(RegsStepIfSignalHandlerTest, arm64_step_if_signal_handler) {
uint64_t addr = 0x1000;
RegsArm64 regs;
regs[ARM64_REG_PC] = 0x8000;
regs[ARM64_REG_SP] = addr;
elf_memory_->SetData64(0x8000, 0xd4000001d2801168ULL);
for (uint64_t index = 0; index <= 100; index++) {
process_memory_.SetData64(addr + index * 8, index * 0x10);
}
ASSERT_TRUE(regs.StepIfSignalHandler(0x8000, elf_.get(), &process_memory_));
EXPECT_EQ(0x460U, regs[ARM64_REG_SP]);
EXPECT_EQ(0x470U, regs[ARM64_REG_PC]);
EXPECT_EQ(0x460U, regs.sp());
EXPECT_EQ(0x470U, regs.pc());
}
TEST_F(RegsStepIfSignalHandlerTest, x86_step_if_signal_handler_no_siginfo) {
uint64_t addr = 0xa00;
RegsX86 regs;
regs[X86_REG_EIP] = 0x4100;
regs[X86_REG_ESP] = addr;
elf_memory_->SetData64(0x4100, 0x80cd00000077b858ULL);
for (uint64_t index = 0; index <= 25; index++) {
process_memory_.SetData32(addr + index * 4, index * 0x10);
}
ASSERT_TRUE(regs.StepIfSignalHandler(0x4100, elf_.get(), &process_memory_));
EXPECT_EQ(0x70U, regs[X86_REG_EBP]);
EXPECT_EQ(0x80U, regs[X86_REG_ESP]);
EXPECT_EQ(0x90U, regs[X86_REG_EBX]);
EXPECT_EQ(0xa0U, regs[X86_REG_EDX]);
EXPECT_EQ(0xb0U, regs[X86_REG_ECX]);
EXPECT_EQ(0xc0U, regs[X86_REG_EAX]);
EXPECT_EQ(0xf0U, regs[X86_REG_EIP]);
EXPECT_EQ(0x80U, regs.sp());
EXPECT_EQ(0xf0U, regs.pc());
}
TEST_F(RegsStepIfSignalHandlerTest, x86_step_if_signal_handler_siginfo) {
uint64_t addr = 0xa00;
RegsX86 regs;
regs[X86_REG_EIP] = 0x4100;
regs[X86_REG_ESP] = addr;
elf_memory_->SetData64(0x4100, 0x0080cd000000adb8ULL);
addr += 8;
// Pointer to ucontext data.
process_memory_.SetData32(addr, 0x8100);
addr = 0x8100;
for (uint64_t index = 0; index <= 30; index++) {
process_memory_.SetData32(addr + index * 4, index * 0x10);
}
ASSERT_TRUE(regs.StepIfSignalHandler(0x4100, elf_.get(), &process_memory_));
EXPECT_EQ(0xb0U, regs[X86_REG_EBP]);
EXPECT_EQ(0xc0U, regs[X86_REG_ESP]);
EXPECT_EQ(0xd0U, regs[X86_REG_EBX]);
EXPECT_EQ(0xe0U, regs[X86_REG_EDX]);
EXPECT_EQ(0xf0U, regs[X86_REG_ECX]);
EXPECT_EQ(0x100U, regs[X86_REG_EAX]);
EXPECT_EQ(0x130U, regs[X86_REG_EIP]);
EXPECT_EQ(0xc0U, regs.sp());
EXPECT_EQ(0x130U, regs.pc());
}
TEST_F(RegsStepIfSignalHandlerTest, x86_64_step_if_signal_handler) {
uint64_t addr = 0x500;
RegsX86_64 regs;
regs[X86_64_REG_RIP] = 0x7000;
regs[X86_64_REG_RSP] = addr;
elf_memory_->SetData64(0x7000, 0x0f0000000fc0c748);
elf_memory_->SetData16(0x7008, 0x0f05);
for (uint64_t index = 0; index <= 30; index++) {
process_memory_.SetData64(addr + index * 8, index * 0x10);
}
ASSERT_TRUE(regs.StepIfSignalHandler(0x7000, elf_.get(), &process_memory_));
EXPECT_EQ(0x140U, regs[X86_64_REG_RSP]);
EXPECT_EQ(0x150U, regs[X86_64_REG_RIP]);
EXPECT_EQ(0x140U, regs.sp());
EXPECT_EQ(0x150U, regs.pc());
}
TEST_F(RegsStepIfSignalHandlerTest, mips_step_if_signal_handler_non_rt) {
uint64_t addr = 0x1000;
RegsMips regs;
regs[MIPS_REG_PC] = 0x8000;
regs[MIPS_REG_SP] = addr;
elf_memory_->SetData64(0x8000, 0x0000000c24021017ULL);
for (uint64_t index = 0; index <= 50; index++) {
process_memory_.SetData64(addr + index * 8, index * 0x10);
}
ASSERT_TRUE(regs.StepIfSignalHandler(0x8000, elf_.get(), &process_memory_));
EXPECT_EQ(0x220U, regs[MIPS_REG_SP]);
EXPECT_EQ(0x040U, regs[MIPS_REG_PC]);
EXPECT_EQ(0x220U, regs.sp());
EXPECT_EQ(0x040U, regs.pc());
}
TEST_F(RegsStepIfSignalHandlerTest, mips_step_if_signal_handler_rt) {
uint64_t addr = 0x1000;
RegsMips regs;
regs[MIPS_REG_PC] = 0x8000;
regs[MIPS_REG_SP] = addr;
elf_memory_->SetData64(0x8000, 0x0000000c24021061ULL);
for (uint64_t index = 0; index <= 100; index++) {
process_memory_.SetData64(addr + index * 8, index * 0x10);
}
ASSERT_TRUE(regs.StepIfSignalHandler(0x8000, elf_.get(), &process_memory_));
EXPECT_EQ(0x350U, regs[MIPS_REG_SP]);
EXPECT_EQ(0x170U, regs[MIPS_REG_PC]);
EXPECT_EQ(0x350U, regs.sp());
EXPECT_EQ(0x170U, regs.pc());
}
TEST_F(RegsStepIfSignalHandlerTest, mips64_step_if_signal_handler) {
uint64_t addr = 0x1000;
RegsMips64 regs;
regs[MIPS64_REG_PC] = 0x8000;
regs[MIPS64_REG_SP] = addr;
elf_memory_->SetData64(0x8000, 0x0000000c2402145bULL);
for (uint64_t index = 0; index <= 100; index++) {
process_memory_.SetData64(addr + index * 8, index * 0x10);
}
ASSERT_TRUE(regs.StepIfSignalHandler(0x8000, elf_.get(), &process_memory_));
EXPECT_EQ(0x350U, regs[MIPS64_REG_SP]);
EXPECT_EQ(0x600U, regs[MIPS64_REG_PC]);
EXPECT_EQ(0x350U, regs.sp());
EXPECT_EQ(0x600U, regs.pc());
}
} // namespace unwindstack