diff options
| author | Dimitry Andric <dim@FreeBSD.org> | 2017-06-16 21:03:24 +0000 |
|---|---|---|
| committer | Dimitry Andric <dim@FreeBSD.org> | 2017-06-16 21:03:24 +0000 |
| commit | 7c7aba6e5fef47a01a136be655b0a92cfd7090f6 (patch) | |
| tree | 99ec531924f6078534b100ab9d7696abce848099 /lib/DebugInfo/DWARF/DWARFVerifier.cpp | |
| parent | 7ab83427af0f77b59941ceba41d509d7d097b065 (diff) | |
Vendor import of llvm trunk r305575:vendor/llvm/llvm-trunk-r305575
Notes
svn path=/vendor/llvm/dist/; revision=320013
svn path=/vendor/llvm/llvm-trunk-r305575/; revision=320014; tag=vendor/llvm/llvm-trunk-r305575
Diffstat (limited to 'lib/DebugInfo/DWARF/DWARFVerifier.cpp')
| -rw-r--r-- | lib/DebugInfo/DWARF/DWARFVerifier.cpp | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/lib/DebugInfo/DWARF/DWARFVerifier.cpp b/lib/DebugInfo/DWARF/DWARFVerifier.cpp index 8a544296f65c..a6240fb60143 100644 --- a/lib/DebugInfo/DWARF/DWARFVerifier.cpp +++ b/lib/DebugInfo/DWARF/DWARFVerifier.cpp @@ -14,6 +14,7 @@ #include "llvm/DebugInfo/DWARF/DWARFDie.h" #include "llvm/DebugInfo/DWARF/DWARFFormValue.h" #include "llvm/DebugInfo/DWARF/DWARFSection.h" +#include "llvm/DebugInfo/DWARF/DWARFAcceleratorTable.h" #include "llvm/Support/raw_ostream.h" #include <map> #include <set> @@ -275,3 +276,36 @@ bool DWARFVerifier::handleDebugLine() { verifyDebugLineRows(); return NumDebugLineErrors == 0; } + +bool DWARFVerifier::handleAppleNames() { + NumAppleNamesErrors = 0; + OS << "Verifying .apple_names...\n"; + + DataExtractor AppleNamesSection(DCtx.getAppleNamesSection().Data, + DCtx.isLittleEndian(), 0); + DataExtractor StrData(DCtx.getStringSection(), DCtx.isLittleEndian(), 0); + DWARFAcceleratorTable AppleNames(AppleNamesSection, StrData, + DCtx.getAppleNamesSection().Relocs); + + if (!AppleNames.extract()) { + OS << "error: cannot extract .apple_names accelerator table\n"; + return false; + } + + // Verify that all buckets have a valid hash index or are empty + uint32_t NumBuckets = AppleNames.getNumBuckets(); + uint32_t NumHashes = AppleNames.getNumHashes(); + + uint32_t BucketsOffset = + AppleNames.getSizeHdr() + AppleNames.getHeaderDataLength(); + + for (uint32_t BucketIdx = 0; BucketIdx < NumBuckets; ++BucketIdx) { + uint32_t HashIdx = AppleNamesSection.getU32(&BucketsOffset); + if (HashIdx >= NumHashes && HashIdx != UINT32_MAX) { + OS << format("error: Bucket[%d] has invalid hash index: [%d]\n", + BucketIdx, HashIdx); + ++NumAppleNamesErrors; + } + } + return NumAppleNamesErrors == 0; +} |