[DebugInfo] Dump a .debug_line section, including line-number program,
without any compile units.
Differential Revision: https://reviews.llvm.org/D40114
llvm-svn: 318842
diff --git a/llvm/lib/DebugInfo/DWARF/DWARFDebugLine.cpp b/llvm/lib/DebugInfo/DWARF/DWARFDebugLine.cpp
index 554e073..3e7f3c5 100644
--- a/llvm/lib/DebugInfo/DWARF/DWARFDebugLine.cpp
+++ b/llvm/lib/DebugInfo/DWARF/DWARFDebugLine.cpp
@@ -383,7 +383,7 @@
}
const DWARFDebugLine::LineTable *
-DWARFDebugLine::getOrParseLineTable(const DWARFDataExtractor &DebugLineData,
+DWARFDebugLine::getOrParseLineTable(DWARFDataExtractor &DebugLineData,
uint32_t Offset, const DWARFUnit *U) {
std::pair<LineTableIter, bool> Pos =
LineTableMap.insert(LineTableMapTy::value_type(Offset, LineTable()));
@@ -395,7 +395,7 @@
return LT;
}
-bool DWARFDebugLine::LineTable::parse(const DWARFDataExtractor &DebugLineData,
+bool DWARFDebugLine::LineTable::parse(DWARFDataExtractor &DebugLineData,
uint32_t *OffsetPtr, const DWARFUnit *U,
raw_ostream *OS) {
const uint32_t DebugLineOffset = *OffsetPtr;
@@ -414,6 +414,13 @@
const uint32_t EndOffset =
DebugLineOffset + Prologue.TotalLength + Prologue.sizeofTotalLength();
+ // See if we should tell the data extractor the address size.
+ if (DebugLineData.getAddressSize() == 0)
+ DebugLineData.setAddressSize(Prologue.getAddressSize());
+ else
+ assert(Prologue.getAddressSize() == 0 ||
+ Prologue.getAddressSize() == DebugLineData.getAddressSize());
+
ParsingState State(this);
while (*OffsetPtr < EndOffset) {
@@ -467,6 +474,13 @@
// relocatable address. All of the other statement program opcodes
// that affect the address register add a delta to it. This instruction
// stores a relocatable value into it instead.
+ //
+ // Make sure the extractor knows the address size. If not, infer it
+ // from the size of the operand.
+ if (DebugLineData.getAddressSize() == 0)
+ DebugLineData.setAddressSize(Len - 1);
+ else
+ assert(DebugLineData.getAddressSize() == Len - 1);
State.Row.Address = DebugLineData.getRelocatedAddress(OffsetPtr);
if (OS)
*OS << format(" (0x%16.16" PRIx64 ")", State.Row.Address);