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| author | Alexey Samsonov <samsonov@google.com> | 2013-10-28 23:15:15 +0000 |
|---|---|---|
| committer | Alexey Samsonov <samsonov@google.com> | 2013-10-28 23:15:15 +0000 |
| commit | d2d54e2b7c8a427cf1f4684bee335c4bedc5a99b (patch) | |
| tree | 4cf1953ff29aabac39a1988a35950569a36c33b0 /lib/DebugInfo | |
| parent | c5253237f8b3b4eb888f7f85f39acd7d4d0f57cf (diff) | |
| download | external_llvm-d2d54e2b7c8a427cf1f4684bee335c4bedc5a99b.zip external_llvm-d2d54e2b7c8a427cf1f4684bee335c4bedc5a99b.tar.gz external_llvm-d2d54e2b7c8a427cf1f4684bee335c4bedc5a99b.tar.bz2 | |
DWARF parser: since DWARF4, DW_AT_high_pc may be a constant representing function size
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@193555 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/DebugInfo')
| -rw-r--r-- | lib/DebugInfo/DWARFDebugInfoEntry.cpp | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/lib/DebugInfo/DWARFDebugInfoEntry.cpp b/lib/DebugInfo/DWARFDebugInfoEntry.cpp index e8b8748..3383cee 100644 --- a/lib/DebugInfo/DWARFDebugInfoEntry.cpp +++ b/lib/DebugInfo/DWARFDebugInfoEntry.cpp @@ -258,11 +258,17 @@ uint64_t DWARFDebugInfoEntryMinimal::getAttributeValueAsSectionOffset( bool DWARFDebugInfoEntryMinimal::getLowAndHighPC(const DWARFUnit *U, uint64_t &LowPC, uint64_t &HighPC) const { - HighPC = -1ULL; LowPC = getAttributeValueAsAddress(U, DW_AT_low_pc, -1ULL); - // FIXME: Check if HighPC is of class constant (it has different semantics). - if (LowPC != -1ULL) - HighPC = getAttributeValueAsAddress(U, DW_AT_high_pc, -1ULL); + if (LowPC == -1ULL) + return false; + HighPC = getAttributeValueAsAddress(U, DW_AT_high_pc, -1ULL); + if (HighPC == -1ULL) { + // Since DWARF4, DW_AT_high_pc may also be of class constant, in which case + // it represents function size. + HighPC = getAttributeValueAsUnsignedConstant(U, DW_AT_high_pc, -1ULL); + if (HighPC != -1ULL) + HighPC += LowPC; + } return (HighPC != -1ULL); } |