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author | Alexey Samsonov <samsonov@google.com> | 2012-09-04 08:12:33 +0000 |
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committer | Alexey Samsonov <samsonov@google.com> | 2012-09-04 08:12:33 +0000 |
commit | 5eae90d727c64ca5b4b43b110521b38dcd9f0de6 (patch) | |
tree | b932b5a23ada1047a06817c055c1e97a469f39a9 /lib/DebugInfo/DWARFCompileUnit.cpp | |
parent | 2d5c28da0d14883cd0cd6fcf38d7e28040b634c0 (diff) | |
download | external_llvm-5eae90d727c64ca5b4b43b110521b38dcd9f0de6.zip external_llvm-5eae90d727c64ca5b4b43b110521b38dcd9f0de6.tar.gz external_llvm-5eae90d727c64ca5b4b43b110521b38dcd9f0de6.tar.bz2 |
Add support for fetching inlining context (stack of source code locations)
by instruction address from DWARF.
Add --inlining flag to llvm-dwarfdump to demonstrate and test this functionality,
so that "llvm-dwarfdump --inlining --address=0x..." now works much like
"addr2line -i 0x...", provided that the binary has debug info
(Clang's -gline-tables-only *is* enough).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163128 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/DebugInfo/DWARFCompileUnit.cpp')
-rw-r--r-- | lib/DebugInfo/DWARFCompileUnit.cpp | 28 |
1 files changed, 23 insertions, 5 deletions
diff --git a/lib/DebugInfo/DWARFCompileUnit.cpp b/lib/DebugInfo/DWARFCompileUnit.cpp index d32fd6d..bdd65b7 100644 --- a/lib/DebugInfo/DWARFCompileUnit.cpp +++ b/lib/DebugInfo/DWARFCompileUnit.cpp @@ -75,6 +75,15 @@ DWARFCompileUnit::extract(uint32_t offset, DataExtractor debug_info_data, return 0; } +bool DWARFCompileUnit::extractRangeList(uint32_t RangeListOffset, + DWARFDebugRangeList &RangeList) const { + // Require that compile unit is extracted. + assert(DieArray.size() > 0); + DataExtractor RangesData(Context.getRangeSection(), + Context.isLittleEndian(), AddrSize); + return RangeList.extract(RangesData, &RangeListOffset); +} + void DWARFCompileUnit::clear() { Offset = 0; Length = 0; @@ -246,12 +255,21 @@ DWARFCompileUnit::buildAddressRangeTable(DWARFDebugAranges *debug_aranges, clearDIEs(true); } -const DWARFDebugInfoEntryMinimal* -DWARFCompileUnit::getFunctionDIEForAddress(int64_t address) { +DWARFDebugInfoEntryMinimal::InlinedChain +DWARFCompileUnit::getInlinedChainForAddress(uint64_t Address) { + // First, find a subprogram that contains the given address (the root + // of inlined chain). extractDIEsIfNeeded(false); + const DWARFDebugInfoEntryMinimal *SubprogramDIE = 0; for (size_t i = 0, n = DieArray.size(); i != n; i++) { - if (DieArray[i].addressRangeContainsAddress(this, address)) - return &DieArray[i]; + if (DieArray[i].isSubprogramDIE() && + DieArray[i].addressRangeContainsAddress(this, Address)) { + SubprogramDIE = &DieArray[i]; + break; + } } - return 0; + // Get inlined chain rooted at this subprogram DIE. + if (!SubprogramDIE) + return DWARFDebugInfoEntryMinimal::InlinedChain(); + return SubprogramDIE->getInlinedChainForAddress(this, Address); } |