[DWARF parser] Use distinction between DW_AT_ranges_base and DW_AT_GNU_ranges_base instead of DWARF version
llvm-svn: 210945
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@ -210,6 +210,16 @@ uint64_t DWARFDebugInfoEntryMinimal::getAttributeValueAsSectionOffset(
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return Result.hasValue() ? Result.getValue() : FailValue;
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return Result.hasValue() ? Result.getValue() : FailValue;
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}
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}
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uint64_t
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DWARFDebugInfoEntryMinimal::getRangesBaseAttribute(const DWARFUnit *U,
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uint64_t FailValue) const {
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uint64_t Result =
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getAttributeValueAsSectionOffset(U, DW_AT_ranges_base, -1ULL);
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if (Result != -1ULL)
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return Result;
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return getAttributeValueAsSectionOffset(U, DW_AT_GNU_ranges_base, FailValue);
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}
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bool DWARFDebugInfoEntryMinimal::getLowAndHighPC(const DWARFUnit *U,
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bool DWARFDebugInfoEntryMinimal::getLowAndHighPC(const DWARFUnit *U,
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uint64_t &LowPC,
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uint64_t &LowPC,
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uint64_t &HighPC) const {
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uint64_t &HighPC) const {
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@ -106,6 +106,8 @@ public:
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const uint16_t Attr,
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const uint16_t Attr,
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uint64_t FailValue) const;
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uint64_t FailValue) const;
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uint64_t getRangesBaseAttribute(const DWARFUnit *U, uint64_t FailValue) const;
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/// Retrieves DW_AT_low_pc and DW_AT_high_pc from CU.
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/// Retrieves DW_AT_low_pc and DW_AT_high_pc from CU.
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/// Returns true if both attributes are present.
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/// Returns true if both attributes are present.
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bool getLowAndHighPC(const DWARFUnit *U, uint64_t &LowPC,
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bool getLowAndHighPC(const DWARFUnit *U, uint64_t &LowPC,
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@ -225,12 +225,10 @@ size_t DWARFUnit::extractDIEsIfNeeded(bool CUDieOnly) {
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setBaseAddress(BaseAddr);
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setBaseAddress(BaseAddr);
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AddrOffsetSectionBase = DieArray[0].getAttributeValueAsSectionOffset(
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AddrOffsetSectionBase = DieArray[0].getAttributeValueAsSectionOffset(
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this, DW_AT_GNU_addr_base, 0);
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this, DW_AT_GNU_addr_base, 0);
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// Users of old DWARF may not know about DW_AT_ranges_base, so it is ignored
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RangeSectionBase = DieArray[0].getAttributeValueAsSectionOffset(
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// for skeleton CU DIE (e.g. DW_AT_ranges are *not* relative to it).
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this, DW_AT_ranges_base, 0);
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if (Version > 4) {
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// Don't fall back to DW_AT_GNU_ranges_base: it should be ignored for
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RangeSectionBase = DieArray[0].getAttributeValueAsSectionOffset(
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// skeleton CU DIE, so that DWARF users not aware of it are not broken.
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this, DW_AT_GNU_ranges_base, 0);
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}
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}
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}
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setDIERelations();
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setDIERelations();
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@ -276,8 +274,7 @@ bool DWARFUnit::parseDWO() {
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}
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}
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// Share .debug_addr and .debug_ranges section with compile unit in .dwo
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// Share .debug_addr and .debug_ranges section with compile unit in .dwo
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DWOCU->setAddrOffsetSection(AddrOffsetSection, AddrOffsetSectionBase);
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DWOCU->setAddrOffsetSection(AddrOffsetSection, AddrOffsetSectionBase);
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uint32_t DWORangesBase = DieArray[0].getAttributeValueAsSectionOffset(
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uint32_t DWORangesBase = DieArray[0].getRangesBaseAttribute(this, 0);
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this, DW_AT_GNU_ranges_base, 0);
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DWOCU->setRangesSection(RangeSection, DWORangesBase);
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DWOCU->setRangesSection(RangeSection, DWORangesBase);
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return true;
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return true;
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}
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}
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