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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 <deque>
#include <string>
#include <unwindstack/Elf.h>
#include <unwindstack/ElfInterface.h>
#include <unwindstack/Memory.h>
#include <unwindstack/Regs.h>
#include "ElfFake.h"
#include "RegsFake.h"
namespace unwindstack {
std::deque<FunctionData> ElfInterfaceFake::functions_;
std::deque<StepData> ElfInterfaceFake::steps_;
bool ElfInterfaceFake::GetFunctionName(uint64_t, uint64_t, std::string* name, uint64_t* offset) {
if (functions_.empty()) {
return false;
}
auto entry = functions_.front();
functions_.pop_front();
*name = entry.name;
*offset = entry.offset;
return true;
}
bool ElfInterfaceFake::GetGlobalVariable(const std::string& global, uint64_t* offset) {
auto entry = globals_.find(global);
if (entry == globals_.end()) {
return false;
}
*offset = entry->second;
return true;
}
bool ElfInterfaceFake::Step(uint64_t, uint64_t, Regs* regs, Memory*, bool* finished) {
if (steps_.empty()) {
return false;
}
auto entry = steps_.front();
steps_.pop_front();
if (entry.pc == 0 && entry.sp == 0 && !entry.finished) {
// Pretend as though there is no frame.
return false;
}
RegsFake* fake_regs = reinterpret_cast<RegsFake*>(regs);
fake_regs->FakeSetPc(entry.pc);
fake_regs->FakeSetSp(entry.sp);
*finished = entry.finished;
return true;
}
} // namespace unwindstack
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