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132 lines
3.1 KiB
132 lines
3.1 KiB
/*
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* Copyright 2016 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 "GcdaParser.h"
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#include <iostream>
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#include <vector>
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#include "GcdaFile.h"
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using namespace std;
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namespace android {
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namespace vts {
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bool GcdaRawCoverageParser::ParseMagic() {
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unsigned magic = gcda_file_->ReadUnsigned();
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unsigned version;
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const char* type = NULL;
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int endianness = 0;
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char m[4], v[4];
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if ((endianness = gcda_file_->Magic(magic, GCOV_DATA_MAGIC))) {
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type = "data";
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} else {
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cout << __func__ << ": not a GCOV file, " << filename_ << endl;
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gcda_file_->Close();
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return false;
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}
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version = gcda_file_->ReadUnsigned();
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GCOV_UNSIGNED2STRING(v, version);
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GCOV_UNSIGNED2STRING(m, magic);
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if (version != GCOV_VERSION) {
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char e[4];
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GCOV_UNSIGNED2STRING(e, GCOV_VERSION);
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}
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return true;
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}
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void GcdaRawCoverageParser::ParseBody() {
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unsigned tags[4];
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unsigned depth = 0;
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bool found;
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unsigned base;
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unsigned position;
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unsigned tag;
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unsigned length;
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unsigned tag_depth;
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int error;
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unsigned mask;
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gcda_file_->ReadUnsigned(); // stamp
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while (1) {
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position = gcda_file_->Position();
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tag = gcda_file_->ReadUnsigned();
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if (!tag) break;
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length = gcda_file_->ReadUnsigned();
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base = gcda_file_->Position();
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mask = GCOV_TAG_MASK(tag) >> 1;
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for (tag_depth = 4; mask; mask >>= 8) {
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if ((mask & 0xff) != 0xff) {
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cerr << __func__ << ": invalid tag, " << tag << endl;
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break;
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}
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tag_depth--;
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}
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found = false;
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if (tag) {
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if (depth && depth < tag_depth &&
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!GCOV_TAG_IS_SUBTAG(tags[depth - 1], tag)) {
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cerr << __func__ << ": incorrectly nested tag, " << tag << endl;
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}
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depth = tag_depth;
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tags[depth - 1] = tag;
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}
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switch(tag) {
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case GCOV_TAG_FUNCTION:
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TagFunction(tag, length);
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break;
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case GCOV_TAG_BLOCKS:
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TagBlocks(tag, length);
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break;
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case GCOV_TAG_ARCS:
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TagArcs(tag, length);
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break;
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case GCOV_TAG_LINES:
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TagLines(tag, length);
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break;
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}
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gcda_file_->Sync(base, length);
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if ((error = gcda_file_->IsError())) {
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cerr << __func__ << ": I/O error at "
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<< gcda_file_->Position() << endl;
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break;
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}
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}
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}
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vector<unsigned> GcdaRawCoverageParser::Parse() {
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result.clear();
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if (!gcda_file_->Open()) {
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cerr << __func__ << " Cannot open a file, " << filename_ << endl;
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return result;
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}
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if (!ParseMagic()) return result;
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ParseBody();
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gcda_file_->Close();
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return result;
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}
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} // namespace vts
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} // namespace android
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