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[DWARF parser] Refactor fetching DIE address ranges.

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Add a helper method to get address ranges specified in a DIE
(either by DW_AT_low_pc/DW_AT_high_pc, or by DW_AT_ranges). Use it
to untangle and simplify the code.

No functionality change.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206624 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Alexey Samsonov
2014-04-18 17:25:46 +00:00
parent 54850bedf2
commit fe030f3dcd
7 changed files with 72 additions and 64 deletions
Download Patch File Download Diff File Expand all files Collapse all files

15
lib/DebugInfo/DWARFDebugRangeList.cpp
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@@ -54,13 +54,16 @@ void DWARFDebugRangeList::dump(raw_ostream &OS) const {
OS << format("%08x <End of list>\n", Offset);
}
bool DWARFDebugRangeList::containsAddress(uint64_t BaseAddress,
uint64_t Address) const {
DWARFAddressRangesVector
DWARFDebugRangeList::getAbsoluteRanges(uint64_t BaseAddress) const {
DWARFAddressRangesVector Res;
for (const RangeListEntry &RLE : Entries) {
if (RLE.isBaseAddressSelectionEntry(AddressSize))
if (RLE.isBaseAddressSelectionEntry(AddressSize)) {
BaseAddress = RLE.EndAddress;
else if (RLE.containsAddress(BaseAddress, Address))
return true;
} else {
Res.push_back(std::make_pair(BaseAddress + RLE.StartAddress,
BaseAddress + RLE.EndAddress));
}
}
return false;
return Res;
}