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llvm-dwarfdump: Add support for dumping the .debug_loc section

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This is a basic implementation - we still don't have any support (that I
know of) for dumping DWARF expressions in a meaningful way, so the
location information itself is just printed as a sequence of bytes as we
do elsewhere.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184361 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
David Blaikie
2013-06-19 21:37:13 +00:00
parent ba54bca472
commit 3df7d2f70b
11 changed files with 211 additions and 1 deletions
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lib/DebugInfo/DWARFContext.cpp
+19
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@@ -35,6 +35,11 @@ void DWARFContext::dump(raw_ostream &OS, DIDumpType DumpType) {
getCompileUnitAtIndex(i)->dump(OS);
}
if (DumpType == DIDT_All || DumpType == DIDT_Loc) {
OS << ".debug_loc contents:\n";
getDebugLoc()->dump(OS);
}
if (DumpType == DIDT_All || DumpType == DIDT_Frames) {
OS << "\n.debug_frame contents:\n";
getDebugFrame()->dump(OS);
@@ -171,6 +176,18 @@ const DWARFDebugAbbrev *DWARFContext::getDebugAbbrevDWO() {
return AbbrevDWO.get();
}
const DWARFDebugLoc *DWARFContext::getDebugLoc() {
if (Loc)
return Loc.get();
DataExtractor LocData(getLocSection(), isLittleEndian(), 0);
Loc.reset(new DWARFDebugLoc(locRelocMap()));
// assume all compile units have the same address byte size
if (getNumCompileUnits())
Loc->parse(LocData, getCompileUnitAtIndex(0)->getAddressByteSize());
return Loc.get();
}
const DWARFDebugAranges *DWARFContext::getDebugAranges() {
if (Aranges)
return Aranges.get();
@@ -542,6 +559,7 @@ DWARFContextInMemory::DWARFContextInMemory(object::ObjectFile *Obj) :
StringRef *Section = StringSwitch<StringRef*>(name)
.Case("debug_info", &InfoSection)
.Case("debug_abbrev", &AbbrevSection)
.Case("debug_loc", &LocSection)
.Case("debug_line", &LineSection)
.Case("debug_aranges", &ARangeSection)
.Case("debug_frame", &DebugFrameSection)
@@ -576,6 +594,7 @@ DWARFContextInMemory::DWARFContextInMemory(object::ObjectFile *Obj) :
// Record relocations for the debug_info and debug_line sections.
RelocAddrMap *Map = StringSwitch<RelocAddrMap*>(RelSecName)
.Case("debug_info", &InfoRelocMap)
.Case("debug_loc", &LocRelocMap)
.Case("debug_info.dwo", &InfoDWORelocMap)
.Case("debug_line", &LineRelocMap)
.Default(0);