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to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636
94 lines
3.0 KiB
C++
94 lines
3.0 KiB
C++
//===- TestingSupport.cpp - Convert objects files into test files --------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/Object/ObjectFile.h"
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#include "llvm/ProfileData/InstrProf.h"
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#include "llvm/Support/CommandLine.h"
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#include "llvm/Support/LEB128.h"
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#include "llvm/Support/raw_ostream.h"
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#include <functional>
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#include <system_error>
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using namespace llvm;
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using namespace object;
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int convertForTestingMain(int argc, const char *argv[]) {
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cl::opt<std::string> InputSourceFile(cl::Positional, cl::Required,
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cl::desc("<Source file>"));
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cl::opt<std::string> OutputFilename(
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"o", cl::Required,
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cl::desc(
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"File with the profile data obtained after an instrumented run"));
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cl::ParseCommandLineOptions(argc, argv, "LLVM code coverage tool\n");
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auto ObjErr = llvm::object::ObjectFile::createObjectFile(InputSourceFile);
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if (!ObjErr) {
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std::string Buf;
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raw_string_ostream OS(Buf);
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logAllUnhandledErrors(ObjErr.takeError(), OS);
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OS.flush();
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errs() << "error: " << Buf;
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return 1;
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}
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ObjectFile *OF = ObjErr.get().getBinary();
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auto BytesInAddress = OF->getBytesInAddress();
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if (BytesInAddress != 8) {
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errs() << "error: 64 bit binary expected\n";
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return 1;
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}
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// Look for the sections that we are interested in.
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int FoundSectionCount = 0;
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SectionRef ProfileNames, CoverageMapping;
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auto ObjFormat = OF->getTripleObjectFormat();
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for (const auto &Section : OF->sections()) {
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StringRef Name;
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if (Section.getName(Name))
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return 1;
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if (Name == llvm::getInstrProfSectionName(IPSK_name, ObjFormat,
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/*AddSegmentInfo=*/false)) {
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ProfileNames = Section;
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} else if (Name == llvm::getInstrProfSectionName(
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IPSK_covmap, ObjFormat, /*AddSegmentInfo=*/false)) {
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CoverageMapping = Section;
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} else
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continue;
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++FoundSectionCount;
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}
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if (FoundSectionCount != 2)
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return 1;
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// Get the contents of the given sections.
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uint64_t ProfileNamesAddress = ProfileNames.getAddress();
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StringRef CoverageMappingData;
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StringRef ProfileNamesData;
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if (CoverageMapping.getContents(CoverageMappingData) ||
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ProfileNames.getContents(ProfileNamesData))
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return 1;
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int FD;
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if (auto Err = sys::fs::openFileForWrite(OutputFilename, FD)) {
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errs() << "error: " << Err.message() << "\n";
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return 1;
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}
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raw_fd_ostream OS(FD, true);
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OS << "llvmcovmtestdata";
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encodeULEB128(ProfileNamesData.size(), OS);
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encodeULEB128(ProfileNamesAddress, OS);
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OS << ProfileNamesData;
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// Coverage mapping data is expected to have an alignment of 8.
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for (unsigned Pad = OffsetToAlignment(OS.tell(), 8); Pad; --Pad)
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OS.write(uint8_t(0));
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OS << CoverageMappingData;
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return 0;
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}
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