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289 lines
9.1 KiB
289 lines
9.1 KiB
/* |
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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 <stdint.h> |
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#include <gtest/gtest.h> |
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#include <unwindstack/Elf.h> |
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#include <unwindstack/ElfInterface.h> |
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#include <unwindstack/MapInfo.h> |
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#include <unwindstack/Regs.h> |
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#include "MemoryFake.h" |
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namespace unwindstack { |
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class ElfFake : public Elf { |
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public: |
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ElfFake(Memory* memory) : Elf(memory) { valid_ = true; } |
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virtual ~ElfFake() = default; |
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void set_elf_interface(ElfInterface* interface) { interface_.reset(interface); } |
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}; |
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class ElfInterfaceFake : public ElfInterface { |
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public: |
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ElfInterfaceFake(Memory* memory) : ElfInterface(memory) {} |
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virtual ~ElfInterfaceFake() = default; |
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void set_load_bias(uint64_t load_bias) { load_bias_ = load_bias; } |
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bool Init() override { return false; } |
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void InitHeaders() override {} |
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bool GetSoname(std::string*) override { return false; } |
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bool GetFunctionName(uint64_t, std::string*, uint64_t*) override { return false; } |
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bool Step(uint64_t, Regs*, Memory*) override { return false; } |
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}; |
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template <typename TypeParam> |
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class RegsTestImpl : public RegsImpl<TypeParam> { |
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public: |
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RegsTestImpl(uint16_t total_regs, uint16_t regs_sp) |
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: RegsImpl<TypeParam>(total_regs, regs_sp, Regs::Location(Regs::LOCATION_UNKNOWN, 0)) {} |
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RegsTestImpl(uint16_t total_regs, uint16_t regs_sp, Regs::Location return_loc) |
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: RegsImpl<TypeParam>(total_regs, regs_sp, return_loc) {} |
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virtual ~RegsTestImpl() = default; |
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uint64_t GetAdjustedPc(uint64_t, Elf*) override { return 0; } |
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void SetFromRaw() override {} |
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bool StepIfSignalHandler(uint64_t, Elf*, Memory*) override { return false; } |
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}; |
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class RegsTest : public ::testing::Test { |
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protected: |
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void SetUp() override { |
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memory_ = new MemoryFake; |
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elf_.reset(new ElfFake(memory_)); |
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elf_interface_ = new ElfInterfaceFake(elf_->memory()); |
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elf_->set_elf_interface(elf_interface_); |
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} |
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template <typename AddressType> |
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void RegsReturnAddressRegister(); |
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ElfInterfaceFake* elf_interface_; |
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MemoryFake* memory_; |
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std::unique_ptr<ElfFake> elf_; |
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}; |
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TEST_F(RegsTest, regs32) { |
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RegsTestImpl<uint32_t> regs32(50, 10); |
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ASSERT_EQ(50U, regs32.total_regs()); |
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ASSERT_EQ(10U, regs32.sp_reg()); |
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uint32_t* raw = reinterpret_cast<uint32_t*>(regs32.RawData()); |
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for (size_t i = 0; i < 50; i++) { |
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raw[i] = 0xf0000000 + i; |
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} |
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regs32.set_pc(0xf0120340); |
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regs32.set_sp(0xa0ab0cd0); |
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for (size_t i = 0; i < 50; i++) { |
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ASSERT_EQ(0xf0000000U + i, regs32[i]) << "Failed comparing register " << i; |
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} |
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ASSERT_EQ(0xf0120340U, regs32.pc()); |
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ASSERT_EQ(0xa0ab0cd0U, regs32.sp()); |
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regs32[32] = 10; |
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ASSERT_EQ(10U, regs32[32]); |
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} |
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TEST_F(RegsTest, regs64) { |
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RegsTestImpl<uint64_t> regs64(30, 12); |
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ASSERT_EQ(30U, regs64.total_regs()); |
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ASSERT_EQ(12U, regs64.sp_reg()); |
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uint64_t* raw = reinterpret_cast<uint64_t*>(regs64.RawData()); |
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for (size_t i = 0; i < 30; i++) { |
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raw[i] = 0xf123456780000000UL + i; |
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} |
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regs64.set_pc(0xf123456780102030UL); |
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regs64.set_sp(0xa123456780a0b0c0UL); |
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for (size_t i = 0; i < 30; i++) { |
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ASSERT_EQ(0xf123456780000000U + i, regs64[i]) << "Failed reading register " << i; |
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} |
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ASSERT_EQ(0xf123456780102030UL, regs64.pc()); |
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ASSERT_EQ(0xa123456780a0b0c0UL, regs64.sp()); |
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regs64[8] = 10; |
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ASSERT_EQ(10U, regs64[8]); |
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} |
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template <typename AddressType> |
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void RegsTest::RegsReturnAddressRegister() { |
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RegsTestImpl<AddressType> regs(20, 10, Regs::Location(Regs::LOCATION_REGISTER, 5)); |
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regs[5] = 0x12345; |
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uint64_t value; |
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ASSERT_TRUE(regs.GetReturnAddressFromDefault(memory_, &value)); |
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ASSERT_EQ(0x12345U, value); |
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} |
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TEST_F(RegsTest, regs32_return_address_register) { |
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RegsReturnAddressRegister<uint32_t>(); |
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} |
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TEST_F(RegsTest, regs64_return_address_register) { |
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RegsReturnAddressRegister<uint64_t>(); |
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} |
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TEST_F(RegsTest, regs32_return_address_sp_offset) { |
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RegsTestImpl<uint32_t> regs(20, 10, Regs::Location(Regs::LOCATION_SP_OFFSET, -2)); |
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regs.set_sp(0x2002); |
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memory_->SetData32(0x2000, 0x12345678); |
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uint64_t value; |
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ASSERT_TRUE(regs.GetReturnAddressFromDefault(memory_, &value)); |
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ASSERT_EQ(0x12345678U, value); |
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} |
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TEST_F(RegsTest, regs64_return_address_sp_offset) { |
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RegsTestImpl<uint64_t> regs(20, 10, Regs::Location(Regs::LOCATION_SP_OFFSET, -8)); |
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regs.set_sp(0x2008); |
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memory_->SetData64(0x2000, 0x12345678aabbccddULL); |
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uint64_t value; |
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ASSERT_TRUE(regs.GetReturnAddressFromDefault(memory_, &value)); |
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ASSERT_EQ(0x12345678aabbccddULL, value); |
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} |
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TEST_F(RegsTest, rel_pc) { |
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RegsArm64 arm64; |
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ASSERT_EQ(0xcU, arm64.GetAdjustedPc(0x10, elf_.get())); |
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ASSERT_EQ(0x0U, arm64.GetAdjustedPc(0x4, elf_.get())); |
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ASSERT_EQ(0x3U, arm64.GetAdjustedPc(0x3, elf_.get())); |
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ASSERT_EQ(0x2U, arm64.GetAdjustedPc(0x2, elf_.get())); |
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ASSERT_EQ(0x1U, arm64.GetAdjustedPc(0x1, elf_.get())); |
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ASSERT_EQ(0x0U, arm64.GetAdjustedPc(0x0, elf_.get())); |
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RegsX86 x86; |
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ASSERT_EQ(0xffU, x86.GetAdjustedPc(0x100, elf_.get())); |
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ASSERT_EQ(0x1U, x86.GetAdjustedPc(0x2, elf_.get())); |
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ASSERT_EQ(0x0U, x86.GetAdjustedPc(0x1, elf_.get())); |
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ASSERT_EQ(0x0U, x86.GetAdjustedPc(0x0, elf_.get())); |
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RegsX86_64 x86_64; |
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ASSERT_EQ(0xffU, x86_64.GetAdjustedPc(0x100, elf_.get())); |
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ASSERT_EQ(0x1U, x86_64.GetAdjustedPc(0x2, elf_.get())); |
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ASSERT_EQ(0x0U, x86_64.GetAdjustedPc(0x1, elf_.get())); |
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ASSERT_EQ(0x0U, x86_64.GetAdjustedPc(0x0, elf_.get())); |
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} |
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TEST_F(RegsTest, rel_pc_arm) { |
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RegsArm arm; |
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// Check fence posts. |
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elf_interface_->set_load_bias(0); |
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ASSERT_EQ(3U, arm.GetAdjustedPc(0x5, elf_.get())); |
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ASSERT_EQ(4U, arm.GetAdjustedPc(0x4, elf_.get())); |
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ASSERT_EQ(3U, arm.GetAdjustedPc(0x3, elf_.get())); |
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ASSERT_EQ(2U, arm.GetAdjustedPc(0x2, elf_.get())); |
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ASSERT_EQ(1U, arm.GetAdjustedPc(0x1, elf_.get())); |
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ASSERT_EQ(0U, arm.GetAdjustedPc(0x0, elf_.get())); |
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elf_interface_->set_load_bias(0x100); |
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ASSERT_EQ(0xffU, arm.GetAdjustedPc(0xff, elf_.get())); |
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ASSERT_EQ(0x103U, arm.GetAdjustedPc(0x105, elf_.get())); |
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ASSERT_EQ(0x104U, arm.GetAdjustedPc(0x104, elf_.get())); |
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ASSERT_EQ(0x103U, arm.GetAdjustedPc(0x103, elf_.get())); |
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ASSERT_EQ(0x102U, arm.GetAdjustedPc(0x102, elf_.get())); |
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ASSERT_EQ(0x101U, arm.GetAdjustedPc(0x101, elf_.get())); |
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ASSERT_EQ(0x100U, arm.GetAdjustedPc(0x100, elf_.get())); |
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// Check thumb instructions handling. |
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elf_interface_->set_load_bias(0); |
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memory_->SetData32(0x2000, 0); |
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ASSERT_EQ(0x2003U, arm.GetAdjustedPc(0x2005, elf_.get())); |
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memory_->SetData32(0x2000, 0xe000f000); |
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ASSERT_EQ(0x2001U, arm.GetAdjustedPc(0x2005, elf_.get())); |
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elf_interface_->set_load_bias(0x400); |
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memory_->SetData32(0x2100, 0); |
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ASSERT_EQ(0x2503U, arm.GetAdjustedPc(0x2505, elf_.get())); |
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memory_->SetData32(0x2100, 0xf111f111); |
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ASSERT_EQ(0x2501U, arm.GetAdjustedPc(0x2505, elf_.get())); |
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} |
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TEST_F(RegsTest, elf_invalid) { |
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Elf invalid_elf(new MemoryFake); |
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RegsArm regs_arm; |
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RegsArm64 regs_arm64; |
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RegsX86 regs_x86; |
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RegsX86_64 regs_x86_64; |
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MapInfo map_info{.start = 0x1000, .end = 0x2000}; |
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regs_arm.set_pc(0x1500); |
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ASSERT_EQ(0x500U, invalid_elf.GetRelPc(regs_arm.pc(), &map_info)); |
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ASSERT_EQ(0x500U, regs_arm.GetAdjustedPc(0x500U, &invalid_elf)); |
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regs_arm64.set_pc(0x1600); |
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ASSERT_EQ(0x600U, invalid_elf.GetRelPc(regs_arm64.pc(), &map_info)); |
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ASSERT_EQ(0x600U, regs_arm64.GetAdjustedPc(0x600U, &invalid_elf)); |
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regs_x86.set_pc(0x1700); |
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ASSERT_EQ(0x700U, invalid_elf.GetRelPc(regs_x86.pc(), &map_info)); |
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ASSERT_EQ(0x700U, regs_x86.GetAdjustedPc(0x700U, &invalid_elf)); |
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regs_x86_64.set_pc(0x1800); |
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ASSERT_EQ(0x800U, invalid_elf.GetRelPc(regs_x86_64.pc(), &map_info)); |
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ASSERT_EQ(0x800U, regs_x86_64.GetAdjustedPc(0x800U, &invalid_elf)); |
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} |
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TEST_F(RegsTest, arm_set_from_raw) { |
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RegsArm arm; |
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uint32_t* regs = reinterpret_cast<uint32_t*>(arm.RawData()); |
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regs[13] = 0x100; |
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regs[15] = 0x200; |
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arm.SetFromRaw(); |
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EXPECT_EQ(0x100U, arm.sp()); |
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EXPECT_EQ(0x200U, arm.pc()); |
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} |
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TEST_F(RegsTest, arm64_set_from_raw) { |
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RegsArm64 arm64; |
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uint64_t* regs = reinterpret_cast<uint64_t*>(arm64.RawData()); |
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regs[31] = 0xb100000000ULL; |
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regs[32] = 0xc200000000ULL; |
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arm64.SetFromRaw(); |
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EXPECT_EQ(0xb100000000U, arm64.sp()); |
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EXPECT_EQ(0xc200000000U, arm64.pc()); |
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} |
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TEST_F(RegsTest, x86_set_from_raw) { |
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RegsX86 x86; |
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uint32_t* regs = reinterpret_cast<uint32_t*>(x86.RawData()); |
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regs[4] = 0x23450000; |
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regs[8] = 0xabcd0000; |
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x86.SetFromRaw(); |
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EXPECT_EQ(0x23450000U, x86.sp()); |
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EXPECT_EQ(0xabcd0000U, x86.pc()); |
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} |
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TEST_F(RegsTest, x86_64_set_from_raw) { |
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RegsX86_64 x86_64; |
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uint64_t* regs = reinterpret_cast<uint64_t*>(x86_64.RawData()); |
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regs[7] = 0x1200000000ULL; |
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regs[16] = 0x4900000000ULL; |
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x86_64.SetFromRaw(); |
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EXPECT_EQ(0x1200000000U, x86_64.sp()); |
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EXPECT_EQ(0x4900000000U, x86_64.pc()); |
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} |
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} // namespace unwindstack
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