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path: root/llvm/lib/ProfileData/Coverage/CoverageMappingReader.cpp
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Diffstat (limited to 'llvm/lib/ProfileData/Coverage/CoverageMappingReader.cpp')
-rw-r--r--llvm/lib/ProfileData/Coverage/CoverageMappingReader.cpp107
1 files changed, 76 insertions, 31 deletions
diff --git a/llvm/lib/ProfileData/Coverage/CoverageMappingReader.cpp b/llvm/lib/ProfileData/Coverage/CoverageMappingReader.cpp
index bee9c8d..e468fbf 100644
--- a/llvm/lib/ProfileData/Coverage/CoverageMappingReader.cpp
+++ b/llvm/lib/ProfileData/Coverage/CoverageMappingReader.cpp
@@ -68,7 +68,8 @@ Error RawCoverageReader::readULEB128(uint64_t &Result) {
unsigned N = 0;
Result = decodeULEB128(Data.bytes_begin(), &N);
if (N > Data.size())
- return make_error<CoverageMapError>(coveragemap_error::malformed);
+ return make_error<CoverageMapError>(coveragemap_error::malformed,
+ "the size of ULEB128 is too big");
Data = Data.substr(N);
return Error::success();
}
@@ -77,7 +78,9 @@ Error RawCoverageReader::readIntMax(uint64_t &Result, uint64_t MaxPlus1) {
if (auto Err = readULEB128(Result))
return Err;
if (Result >= MaxPlus1)
- return make_error<CoverageMapError>(coveragemap_error::malformed);
+ return make_error<CoverageMapError>(
+ coveragemap_error::malformed,
+ "the value of ULEB128 is greater than or equal to MaxPlus1");
return Error::success();
}
@@ -85,7 +88,8 @@ Error RawCoverageReader::readSize(uint64_t &Result) {
if (auto Err = readULEB128(Result))
return Err;
if (Result > Data.size())
- return make_error<CoverageMapError>(coveragemap_error::malformed);
+ return make_error<CoverageMapError>(coveragemap_error::malformed,
+ "the value of ULEB128 is too big");
return Error::success();
}
@@ -103,7 +107,8 @@ Error RawCoverageFilenamesReader::read(CovMapVersion Version) {
if (auto Err = readSize(NumFilenames))
return Err;
if (!NumFilenames)
- return make_error<CoverageMapError>(coveragemap_error::malformed);
+ return make_error<CoverageMapError>(coveragemap_error::malformed,
+ "number of filenames is zero");
if (Version < CovMapVersion::Version4)
return readUncompressed(Version, NumFilenames);
@@ -201,13 +206,15 @@ Error RawCoverageMappingReader::decodeCounter(unsigned Value, Counter &C) {
case CounterExpression::Add: {
auto ID = Value >> Counter::EncodingTagBits;
if (ID >= Expressions.size())
- return make_error<CoverageMapError>(coveragemap_error::malformed);
+ return make_error<CoverageMapError>(coveragemap_error::malformed,
+ "counter expression is invalid");
Expressions[ID].Kind = CounterExpression::ExprKind(Tag);
C = Counter::getExpression(ID);
break;
}
default:
- return make_error<CoverageMapError>(coveragemap_error::malformed);
+ return make_error<CoverageMapError>(coveragemap_error::malformed,
+ "counter expression kind is invalid");
}
return Error::success();
}
@@ -268,7 +275,8 @@ Error RawCoverageMappingReader::readMappingRegionsSubArray(
ExpandedFileID = EncodedCounterAndRegion >>
Counter::EncodingCounterTagAndExpansionRegionTagBits;
if (ExpandedFileID >= NumFileIDs)
- return make_error<CoverageMapError>(coveragemap_error::malformed);
+ return make_error<CoverageMapError>(coveragemap_error::malformed,
+ "ExpandedFileID is invalid");
} else {
switch (EncodedCounterAndRegion >>
Counter::EncodingCounterTagAndExpansionRegionTagBits) {
@@ -287,7 +295,8 @@ Error RawCoverageMappingReader::readMappingRegionsSubArray(
return Err;
break;
default:
- return make_error<CoverageMapError>(coveragemap_error::malformed);
+ return make_error<CoverageMapError>(coveragemap_error::malformed,
+ "region kind is incorrect");
}
}
}
@@ -300,7 +309,8 @@ Error RawCoverageMappingReader::readMappingRegionsSubArray(
if (auto Err = readULEB128(ColumnStart))
return Err;
if (ColumnStart > std::numeric_limits<unsigned>::max())
- return make_error<CoverageMapError>(coveragemap_error::malformed);
+ return make_error<CoverageMapError>(coveragemap_error::malformed,
+ "start column is too big");
if (auto Err = readIntMax(NumLines, std::numeric_limits<unsigned>::max()))
return Err;
if (auto Err = readIntMax(ColumnEnd, std::numeric_limits<unsigned>::max()))
@@ -341,7 +351,9 @@ Error RawCoverageMappingReader::readMappingRegionsSubArray(
LineStart, ColumnStart,
LineStart + NumLines, ColumnEnd, Kind);
if (CMR.startLoc() > CMR.endLoc())
- return make_error<CoverageMapError>(coveragemap_error::malformed);
+ return make_error<CoverageMapError>(
+ coveragemap_error::malformed,
+ "counter mapping region locations are incorrect");
MappingRegions.push_back(CMR);
}
return Error::success();
@@ -613,7 +625,9 @@ public:
using namespace support;
if (CovBuf + sizeof(CovMapHeader) > CovBufEnd)
- return make_error<CoverageMapError>(coveragemap_error::malformed);
+ return make_error<CoverageMapError>(
+ coveragemap_error::malformed,
+ "coverage mapping header section is larger than buffer size");
auto CovHeader = reinterpret_cast<const CovMapHeader *>(CovBuf);
uint32_t NRecords = CovHeader->getNRecords<Endian>();
uint32_t FilenamesSize = CovHeader->getFilenamesSize<Endian>();
@@ -634,7 +648,9 @@ public:
// Get the filenames.
if (CovBuf + FilenamesSize > CovBufEnd)
- return make_error<CoverageMapError>(coveragemap_error::malformed);
+ return make_error<CoverageMapError>(
+ coveragemap_error::malformed,
+ "filenames section is larger than buffer size");
size_t FilenamesBegin = Filenames.size();
StringRef FilenameRegion(CovBuf, FilenamesSize);
RawCoverageFilenamesReader Reader(FilenameRegion, Filenames,
@@ -673,12 +689,15 @@ public:
// coverage header).
const char *MappingBuf = CovBuf;
if (Version >= CovMapVersion::Version4 && CoverageSize != 0)
- return make_error<CoverageMapError>(coveragemap_error::malformed);
+ return make_error<CoverageMapError>(coveragemap_error::malformed,
+ "coverage mapping size is not zero");
CovBuf += CoverageSize;
const char *MappingEnd = CovBuf;
if (CovBuf > CovBufEnd)
- return make_error<CoverageMapError>(coveragemap_error::malformed);
+ return make_error<CoverageMapError>(
+ coveragemap_error::malformed,
+ "function records section is larger than buffer size");
if (Version < CovMapVersion::Version4) {
// Read each function record.
@@ -707,7 +726,9 @@ public:
CFR->template advanceByOne<Endian>(OutOfLineMappingBuf);
if (Version < CovMapVersion::Version4)
if (NextMappingBuf > OutOfLineMappingBufEnd)
- return make_error<CoverageMapError>(coveragemap_error::malformed);
+ return make_error<CoverageMapError>(
+ coveragemap_error::malformed,
+ "next mapping buffer is larger than buffer size");
// Look up the set of filenames associated with this function record.
std::optional<FilenameRange> FileRange;
@@ -717,7 +738,10 @@ public:
uint64_t FilenamesRef = CFR->template getFilenamesRef<Endian>();
auto It = FileRangeMap.find(FilenamesRef);
if (It == FileRangeMap.end())
- return make_error<CoverageMapError>(coveragemap_error::malformed);
+ return make_error<CoverageMapError>(
+ coveragemap_error::malformed,
+ "no filename found for function with hash=0x" +
+ Twine::utohexstr(FilenamesRef));
else
FileRange = It->getSecond();
}
@@ -728,7 +752,9 @@ public:
CFR->template getCoverageMapping<Endian>(OutOfLineMappingBuf);
if (Version >= CovMapVersion::Version4 &&
Mapping.data() + Mapping.size() > FuncRecBufEnd)
- return make_error<CoverageMapError>(coveragemap_error::malformed);
+ return make_error<CoverageMapError>(
+ coveragemap_error::malformed,
+ "coverage mapping data is larger than buffer size");
if (Error Err = insertFunctionRecordIfNeeded(CFR, Mapping, *FileRange))
return Err;
}
@@ -854,7 +880,9 @@ BinaryCoverageReader::createCoverageReaderFromBuffer(
Reader->MappingRecords, CompilationDir, Reader->Filenames))
return std::move(E);
} else
- return make_error<CoverageMapError>(coveragemap_error::malformed);
+ return make_error<CoverageMapError>(
+ coveragemap_error::malformed,
+ "not supported endianness or bytes in address");
return std::move(Reader);
}
@@ -866,7 +894,8 @@ loadTestingFormat(StringRef Data, StringRef CompilationDir) {
// Read the magic and version.
Data = Data.substr(sizeof(TestingFormatMagic));
if (Data.size() < sizeof(uint64_t))
- return make_error<CoverageMapError>(coveragemap_error::malformed);
+ return make_error<CoverageMapError>(coveragemap_error::malformed,
+ "the size of data is too small");
auto TestingVersion =
support::endian::byte_swap<uint64_t, support::endianness::little>(
*reinterpret_cast<const uint64_t *>(Data.data()));
@@ -878,17 +907,21 @@ loadTestingFormat(StringRef Data, StringRef CompilationDir) {
unsigned N = 0;
uint64_t ProfileNamesSize = decodeULEB128(Data.bytes_begin(), &N);
if (N > Data.size())
- return make_error<CoverageMapError>(coveragemap_error::malformed);
+ return make_error<CoverageMapError>(
+ coveragemap_error::malformed,
+ "the size of TestingFormatMagic is too big");
Data = Data.substr(N);
if (Data.empty())
return make_error<CoverageMapError>(coveragemap_error::truncated);
N = 0;
uint64_t Address = decodeULEB128(Data.bytes_begin(), &N);
if (N > Data.size())
- return make_error<CoverageMapError>(coveragemap_error::malformed);
+ return make_error<CoverageMapError>(coveragemap_error::malformed,
+ "the size of ULEB128 is too big");
Data = Data.substr(N);
if (Data.size() < ProfileNamesSize)
- return make_error<CoverageMapError>(coveragemap_error::malformed);
+ return make_error<CoverageMapError>(coveragemap_error::malformed,
+ "the size of ProfileNames is too big");
InstrProfSymtab ProfileNames;
if (Error E = ProfileNames.create(Data.substr(0, ProfileNamesSize), Address))
return std::move(E);
@@ -900,10 +933,13 @@ loadTestingFormat(StringRef Data, StringRef CompilationDir) {
N = 0;
CoverageMappingSize = decodeULEB128(Data.bytes_begin(), &N);
if (N > Data.size())
- return make_error<CoverageMapError>(coveragemap_error::malformed);
+ return make_error<CoverageMapError>(coveragemap_error::malformed,
+ "the size of ULEB128 is too big");
Data = Data.substr(N);
if (CoverageMappingSize < sizeof(CovMapHeader))
- return make_error<CoverageMapError>(coveragemap_error::malformed);
+ return make_error<CoverageMapError>(
+ coveragemap_error::malformed,
+ "the size of CoverageMapping is teoo small");
} else if (TestingVersion != uint64_t(TestingFormatVersion::Version1)) {
return make_error<CoverageMapError>(coveragemap_error::unsupported_version);
}
@@ -911,10 +947,13 @@ loadTestingFormat(StringRef Data, StringRef CompilationDir) {
// Skip the padding bytes because coverage map data has an alignment of 8.
auto Pad = offsetToAlignedAddr(Data.data(), Align(8));
if (Data.size() < Pad)
- return make_error<CoverageMapError>(coveragemap_error::malformed);
+ return make_error<CoverageMapError>(coveragemap_error::malformed,
+ "insufficient padding");
Data = Data.substr(Pad);
if (Data.size() < sizeof(CovMapHeader))
- return make_error<CoverageMapError>(coveragemap_error::malformed);
+ return make_error<CoverageMapError>(
+ coveragemap_error::malformed,
+ "coverage mapping header section is larger than data size");
auto const *CovHeader = reinterpret_cast<const CovMapHeader *>(
Data.substr(0, sizeof(CovMapHeader)).data());
auto Version =
@@ -937,13 +976,15 @@ loadTestingFormat(StringRef Data, StringRef CompilationDir) {
// Read the CoverageRecords data.
if (Version < CovMapVersion::Version4) {
if (!Data.empty())
- return make_error<CoverageMapError>(coveragemap_error::malformed);
+ return make_error<CoverageMapError>(coveragemap_error::malformed,
+ "data is not empty");
} else {
// Skip the padding bytes because coverage records data has an alignment
// of 8.
Pad = offsetToAlignedAddr(Data.data(), Align(8));
if (Data.size() < Pad)
- return make_error<CoverageMapError>(coveragemap_error::malformed);
+ return make_error<CoverageMapError>(coveragemap_error::malformed,
+ "insufficient padding");
Data = Data.substr(Pad);
}
BinaryCoverageReader::FuncRecordsStorage CoverageRecords =
@@ -1000,7 +1041,8 @@ loadBinaryFormat(std::unique_ptr<Binary> Bin, StringRef Arch,
return errorCodeToError(object_error::arch_not_found);
} else
// We can only handle object files.
- return make_error<CoverageMapError>(coveragemap_error::malformed);
+ return make_error<CoverageMapError>(coveragemap_error::malformed,
+ "binary is not an object file");
// The coverage uses native pointer sizes for the object it's written in.
uint8_t BytesInAddress = OF->getBytesInAddress();
@@ -1022,7 +1064,8 @@ loadBinaryFormat(std::unique_ptr<Binary> Bin, StringRef Arch,
return std::move(E);
std::vector<SectionRef> CoverageSectionRefs = *CoverageSection;
if (CoverageSectionRefs.size() != 1)
- return make_error<CoverageMapError>(coveragemap_error::malformed);
+ return make_error<CoverageMapError>(coveragemap_error::malformed,
+ "the size of name section is not one");
auto CoverageMappingOrErr = CoverageSectionRefs.back().getContents();
if (!CoverageMappingOrErr)
return CoverageMappingOrErr.takeError();
@@ -1031,7 +1074,9 @@ loadBinaryFormat(std::unique_ptr<Binary> Bin, StringRef Arch,
InstrProfSymtab ProfileNames;
std::vector<SectionRef> NamesSectionRefs = *NamesSection;
if (NamesSectionRefs.size() != 1)
- return make_error<CoverageMapError>(coveragemap_error::malformed);
+ return make_error<CoverageMapError>(
+ coveragemap_error::malformed,
+ "the size of coverage mapping section is not one");
if (Error E = ProfileNames.create(NamesSectionRefs.back()))
return std::move(E);
generated by cgit v1.1 at 2025-09-29 03:59:36 +0000