1 /* 2 * Copyright (C) 2016 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef _LIBUNWINDSTACK_TESTS_REGS_FAKE_H 18 #define _LIBUNWINDSTACK_TESTS_REGS_FAKE_H 19 20 #include <stdint.h> 21 22 #include <unwindstack/Elf.h> 23 #include <unwindstack/Memory.h> 24 #include <unwindstack/Regs.h> 25 26 namespace unwindstack { 27 28 class RegsFake : public Regs { 29 public: RegsFake(uint16_t total_regs)30 RegsFake(uint16_t total_regs) : Regs(total_regs, Regs::Location(Regs::LOCATION_UNKNOWN, 0)) {} 31 virtual ~RegsFake() = default; 32 Arch()33 ArchEnum Arch() override { return fake_arch_; } RawData()34 void* RawData() override { return nullptr; } pc()35 uint64_t pc() override { return fake_pc_; } sp()36 uint64_t sp() override { return fake_sp_; } set_pc(uint64_t pc)37 void set_pc(uint64_t pc) override { fake_pc_ = pc; } set_sp(uint64_t sp)38 void set_sp(uint64_t sp) override { fake_sp_ = sp; } 39 SetPcFromReturnAddress(Memory *)40 bool SetPcFromReturnAddress(Memory*) override { 41 if (!fake_return_address_valid_) { 42 return false; 43 } 44 fake_pc_ = fake_return_address_; 45 return true; 46 } 47 IterateRegisters(std::function<void (const char *,uint64_t)>)48 void IterateRegisters(std::function<void(const char*, uint64_t)>) override {} 49 Is32Bit()50 bool Is32Bit() { return false; } 51 GetPcAdjustment(uint64_t,Elf *)52 uint64_t GetPcAdjustment(uint64_t, Elf*) override { return 2; } 53 StepIfSignalHandler(uint64_t,Elf *,Memory *)54 bool StepIfSignalHandler(uint64_t, Elf*, Memory*) override { return false; } 55 FakeSetArch(ArchEnum arch)56 void FakeSetArch(ArchEnum arch) { fake_arch_ = arch; } FakeSetDexPc(uint64_t dex_pc)57 void FakeSetDexPc(uint64_t dex_pc) { dex_pc_ = dex_pc; } FakeSetReturnAddress(uint64_t return_address)58 void FakeSetReturnAddress(uint64_t return_address) { fake_return_address_ = return_address; } FakeSetReturnAddressValid(bool valid)59 void FakeSetReturnAddressValid(bool valid) { fake_return_address_valid_ = valid; } 60 Clone()61 Regs* Clone() override { return nullptr; } 62 63 private: 64 ArchEnum fake_arch_ = ARCH_UNKNOWN; 65 uint64_t fake_pc_ = 0; 66 uint64_t fake_sp_ = 0; 67 bool fake_return_address_valid_ = false; 68 uint64_t fake_return_address_ = 0; 69 }; 70 71 template <typename TypeParam> 72 class RegsImplFake : public RegsImpl<TypeParam> { 73 public: RegsImplFake(uint16_t total_regs)74 RegsImplFake(uint16_t total_regs) 75 : RegsImpl<TypeParam>(total_regs, Regs::Location(Regs::LOCATION_UNKNOWN, 0)) {} 76 virtual ~RegsImplFake() = default; 77 Arch()78 ArchEnum Arch() override { return ARCH_UNKNOWN; } pc()79 uint64_t pc() override { return fake_pc_; } sp()80 uint64_t sp() override { return fake_sp_; } set_pc(uint64_t pc)81 void set_pc(uint64_t pc) override { fake_pc_ = pc; } set_sp(uint64_t sp)82 void set_sp(uint64_t sp) override { fake_sp_ = sp; } 83 GetPcAdjustment(uint64_t,Elf *)84 uint64_t GetPcAdjustment(uint64_t, Elf*) override { return 0; } SetPcFromReturnAddress(Memory *)85 bool SetPcFromReturnAddress(Memory*) override { return false; } StepIfSignalHandler(uint64_t,Elf *,Memory *)86 bool StepIfSignalHandler(uint64_t, Elf*, Memory*) override { return false; } 87 Clone()88 Regs* Clone() override { return nullptr; } 89 90 private: 91 uint64_t fake_pc_ = 0; 92 uint64_t fake_sp_ = 0; 93 }; 94 95 } // namespace unwindstack 96 97 #endif // _LIBUNWINDSTACK_TESTS_REGS_FAKE_H 98