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/*
* Copyright (C) 2015 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.
*/
#ifndef _DEBUGGERD_TEST_BACKTRACE_MOCK_H
#define _DEBUGGERD_TEST_BACKTRACE_MOCK_H
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <sys/ucontext.h>
#include <string>
#include <vector>
#include <backtrace/Backtrace.h>
#include <backtrace/BacktraceMap.h>
class BacktraceMapMock : public BacktraceMap {
public:
BacktraceMapMock() : BacktraceMap(0) {}
virtual ~BacktraceMapMock() {}
void AddMap(backtrace_map_t& map) {
maps_.push_back(map);
}
};
class BacktraceMock : public Backtrace {
public:
explicit BacktraceMock(BacktraceMapMock* map) : Backtrace(0, 0, map) {
if (map_ == nullptr) {
abort();
}
}
virtual ~BacktraceMock() {}
virtual bool Unwind(size_t, ucontext_t*) { return false; }
virtual bool ReadWord(uintptr_t, word_t*) { return false;}
virtual std::string GetFunctionNameRaw(uintptr_t, uintptr_t*) { return ""; }
virtual size_t Read(uintptr_t addr, uint8_t* buffer, size_t bytes) {
size_t offset = 0;
if (last_read_addr_ > 0) {
offset = addr - last_read_addr_;
}
size_t bytes_available = buffer_.size() - offset;
if (do_partial_read_) {
// Do a partial read.
if (bytes > bytes_partial_read_) {
bytes = bytes_partial_read_;
}
bytes_partial_read_ -= bytes;
// Only support a single partial read.
do_partial_read_ = false;
} else if (bytes > bytes_available) {
bytes = bytes_available;
}
if (bytes > 0) {
memcpy(buffer, buffer_.data() + offset, bytes);
}
last_read_addr_ = addr;
return bytes;
}
void SetReadData(uint8_t* buffer, size_t bytes) {
buffer_.resize(bytes);
memcpy(buffer_.data(), buffer, bytes);
bytes_partial_read_ = 0;
do_partial_read_ = false;
last_read_addr_ = 0;
}
void SetPartialReadAmount(size_t bytes) {
if (bytes > buffer_.size()) {
abort();
}
bytes_partial_read_ = bytes;
do_partial_read_ = true;
}
private:
std::vector<uint8_t> buffer_;
size_t bytes_partial_read_ = 0;
uintptr_t last_read_addr_ = 0;
bool do_partial_read_ = false;
};
#endif // _DEBUGGERD_TEST_BACKTRACE_MOCK_H
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