Christopher Ferris | f6f691b | 2017-09-25 19:23:07 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2017 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 | #include <stdint.h> |
| 18 | |
| 19 | #include <deque> |
| 20 | #include <string> |
| 21 | |
| 22 | #include <unwindstack/Elf.h> |
| 23 | #include <unwindstack/ElfInterface.h> |
| 24 | #include <unwindstack/Memory.h> |
| 25 | #include <unwindstack/Regs.h> |
| 26 | |
| 27 | #include "ElfFake.h" |
| 28 | #include "RegsFake.h" |
| 29 | |
| 30 | namespace unwindstack { |
| 31 | |
| 32 | std::deque<FunctionData> ElfInterfaceFake::functions_; |
| 33 | std::deque<StepData> ElfInterfaceFake::steps_; |
| 34 | |
Christopher Ferris | 4cc36d2 | 2018-06-06 14:47:31 -0700 | [diff] [blame] | 35 | bool ElfInterfaceFake::GetFunctionName(uint64_t, std::string* name, uint64_t* offset) { |
Christopher Ferris | f6f691b | 2017-09-25 19:23:07 -0700 | [diff] [blame] | 36 | if (functions_.empty()) { |
| 37 | return false; |
| 38 | } |
| 39 | auto entry = functions_.front(); |
| 40 | functions_.pop_front(); |
| 41 | *name = entry.name; |
| 42 | *offset = entry.offset; |
| 43 | return true; |
| 44 | } |
| 45 | |
Christopher Ferris | 150db12 | 2017-12-20 18:49:01 -0800 | [diff] [blame] | 46 | bool ElfInterfaceFake::GetGlobalVariable(const std::string& global, uint64_t* offset) { |
| 47 | auto entry = globals_.find(global); |
| 48 | if (entry == globals_.end()) { |
| 49 | return false; |
| 50 | } |
| 51 | *offset = entry->second; |
| 52 | return true; |
| 53 | } |
| 54 | |
Christopher Ferris | 4cc36d2 | 2018-06-06 14:47:31 -0700 | [diff] [blame] | 55 | bool ElfInterfaceFake::Step(uint64_t, Regs* regs, Memory*, bool* finished) { |
Christopher Ferris | f6f691b | 2017-09-25 19:23:07 -0700 | [diff] [blame] | 56 | if (steps_.empty()) { |
| 57 | return false; |
| 58 | } |
| 59 | auto entry = steps_.front(); |
| 60 | steps_.pop_front(); |
| 61 | |
| 62 | if (entry.pc == 0 && entry.sp == 0 && !entry.finished) { |
| 63 | // Pretend as though there is no frame. |
| 64 | return false; |
| 65 | } |
| 66 | |
| 67 | RegsFake* fake_regs = reinterpret_cast<RegsFake*>(regs); |
Yabin Cui | 11e96fe | 2018-03-14 18:16:22 -0700 | [diff] [blame] | 68 | fake_regs->set_pc(entry.pc); |
| 69 | fake_regs->set_sp(entry.sp); |
Christopher Ferris | f6f691b | 2017-09-25 19:23:07 -0700 | [diff] [blame] | 70 | *finished = entry.finished; |
| 71 | return true; |
| 72 | } |
| 73 | |
| 74 | } // namespace unwindstack |