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DWARF: Remove accessors that parse the whole line table section in one go, this can't possibly work.

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The address size is specified by the compile unit associated with a line table, there is no global address size.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@139835 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Benjamin Kramer
2011-09-15 20:43:18 +00:00
parent aba8015cc3
commit c26ed9b47f
4 changed files with 37 additions and 56 deletions
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24
lib/DebugInfo/DWARFContext.cpp
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@@ -77,15 +77,25 @@ const DWARFDebugAranges *DWARFContext::getDebugAranges() {
return Aranges.get();
}
const DWARFDebugLine *DWARFContext::getDebugLine() {
if (Line)
return Line.get();
const DWARFDebugLine::LineTable *
DWARFContext::getLineTableForCompileUnit(DWARFCompileUnit *cu) {
if (!Line)
Line.reset(new DWARFDebugLine());
DataExtractor lineData(getLineSection(), isLittleEndian(), 0);
unsigned stmtOffset =
cu->getCompileUnitDIE()->getAttributeValueAsUnsigned(cu, DW_AT_stmt_list,
-1U);
if (stmtOffset == -1U)
return 0; // No line table for this compile unit.
Line.reset(new DWARFDebugLine());
Line->parse(lineData);
return Line.get();
// See if the line table is cached.
if (const DWARFDebugLine::LineTable *lt = Line->getLineTable(stmtOffset))
return lt;
// We have to parse it first.
DataExtractor lineData(getLineSection(), isLittleEndian(),
cu->getAddressByteSize());
return Line->getOrParseLineTable(lineData, stmtOffset);
}
void DWARFContext::parseCompileUnits() {