#include "DWARFCompileUnit.h"
#include "DWARFContext.h"
-#include "DWARFFormValue.h"
+#include "llvm/DebugInfo/DWARFFormValue.h"
#include "llvm/Support/Dwarf.h"
#include "llvm/Support/Format.h"
#include "llvm/Support/raw_ostream.h"
using namespace dwarf;
DataExtractor DWARFCompileUnit::getDebugInfoExtractor() const {
- return DataExtractor(Context.getInfoSection(),
- Context.isLittleEndian(), getAddressByteSize());
+ return DataExtractor(InfoSection, isLittleEndian, AddrSize);
}
bool DWARFCompileUnit::extract(DataExtractor debug_info, uint32_t *offset_ptr) {
if (debug_info.isValidOffset(*offset_ptr)) {
uint64_t abbrOffset;
- const DWARFDebugAbbrev *abbr = Context.getDebugAbbrev();
Length = debug_info.getU32(offset_ptr);
Version = debug_info.getU16(offset_ptr);
abbrOffset = debug_info.getU32(offset_ptr);
bool lengthOK = debug_info.isValidOffset(getNextCompileUnitOffset()-1);
bool versionOK = DWARFContext::isSupportedVersion(Version);
- bool abbrOffsetOK = Context.getAbbrevSection().size() > abbrOffset;
+ bool abbrOffsetOK = AbbrevSection.size() > abbrOffset;
bool addrSizeOK = AddrSize == 4 || AddrSize == 8;
- if (lengthOK && versionOK && addrSizeOK && abbrOffsetOK && abbr != NULL) {
- Abbrevs = abbr->getAbbreviationDeclarationSet(abbrOffset);
+ if (lengthOK && versionOK && addrSizeOK && abbrOffsetOK && Abbrev != NULL) {
+ Abbrevs = Abbrev->getAbbreviationDeclarationSet(abbrOffset);
return true;
}
Version = debug_info_data.getU16(&offset);
bool abbrevsOK = debug_info_data.getU32(&offset) == abbrevs->getOffset();
Abbrevs = abbrevs;
- AddrSize = debug_info_data.getU8 (&offset);
+ AddrSize = debug_info_data.getU8(&offset);
bool versionOK = DWARFContext::isSupportedVersion(Version);
bool addrSizeOK = AddrSize == 4 || AddrSize == 8;
return 0;
}
+bool DWARFCompileUnit::extractRangeList(uint32_t RangeListOffset,
+ DWARFDebugRangeList &RangeList) const {
+ // Require that compile unit is extracted.
+ assert(DieArray.size() > 0);
+ DataExtractor RangesData(RangeSection, isLittleEndian, AddrSize);
+ return RangeList.extract(RangesData, &RangeListOffset);
+}
+
void DWARFCompileUnit::clear() {
Offset = 0;
Length = 0;
Abbrevs = 0;
AddrSize = 0;
BaseAddr = 0;
- DieArray.clear();
+ clearDIEs(false);
}
void DWARFCompileUnit::dump(raw_ostream &OS) {
<< " (next CU at " << format("0x%08x", getNextCompileUnitOffset())
<< ")\n";
- extractDIEsIfNeeded(false);
- for (unsigned i = 0, e = DieArray.size(); i != e; ++i)
- DieArray[i].dump(OS, this, 10);
+ const DWARFDebugInfoEntryMinimal *CU = getCompileUnitDIE(false);
+ assert(CU && "Null Compile Unit?");
+ CU->dump(OS, this, -1U);
+}
+
+const char *DWARFCompileUnit::getCompilationDir() {
+ extractDIEsIfNeeded(true);
+ if (DieArray.empty())
+ return 0;
+ return DieArray[0].getAttributeValueAsString(this, DW_AT_comp_dir, 0);
}
void DWARFCompileUnit::setDIERelations() {
// we were told to parse
const uint8_t *fixed_form_sizes =
- DWARFFormValue::getFixedFormSizesForAddressSize(getAddressByteSize());
+ DWARFFormValue::getFixedFormSizes(getAddressByteSize(), getVersion());
while (offset < next_cu_offset &&
die.extractFast(this, fixed_form_sizes, &offset)) {
addDIE(die);
return 1;
}
- else if (depth == 0 && initial_die_array_size == 1) {
+ else if (depth == 0 && initial_die_array_size == 1)
// Don't append the CU die as we already did that
- } else {
- addDIE (die);
- }
+ ;
+ else
+ addDIE(die);
const DWARFAbbreviationDeclaration *abbrDecl =
die.getAbbreviationDeclarationPtr();
// Give a little bit of info if we encounter corrupt DWARF (our offset
// should always terminate at or before the start of the next compilation
// unit header).
- if (offset > next_cu_offset) {
- fprintf (stderr, "warning: DWARF compile unit extends beyond its bounds cu 0x%8.8x at 0x%8.8x'\n", getOffset(), offset);
- }
+ if (offset > next_cu_offset)
+ fprintf(stderr, "warning: DWARF compile unit extends beyond its "
+ "bounds cu 0x%8.8x at 0x%8.8x'\n", getOffset(), offset);
setDIERelations();
return DieArray.size();
}
+
+void DWARFCompileUnit::clearDIEs(bool keep_compile_unit_die) {
+ if (DieArray.size() > (unsigned)keep_compile_unit_die) {
+ // std::vectors never get any smaller when resized to a smaller size,
+ // or when clear() or erase() are called, the size will report that it
+ // is smaller, but the memory allocated remains intact (call capacity()
+ // to see this). So we need to create a temporary vector and swap the
+ // contents which will cause just the internal pointers to be swapped
+ // so that when "tmp_array" goes out of scope, it will destroy the
+ // contents.
+
+ // Save at least the compile unit DIE
+ std::vector<DWARFDebugInfoEntryMinimal> tmpArray;
+ DieArray.swap(tmpArray);
+ if (keep_compile_unit_die)
+ DieArray.push_back(tmpArray.front());
+ }
+}
+
+void
+DWARFCompileUnit::buildAddressRangeTable(DWARFDebugAranges *debug_aranges,
+ bool clear_dies_if_already_not_parsed){
+ // This function is usually called if there in no .debug_aranges section
+ // in order to produce a compile unit level set of address ranges that
+ // is accurate. If the DIEs weren't parsed, then we don't want all dies for
+ // all compile units to stay loaded when they weren't needed. So we can end
+ // up parsing the DWARF and then throwing them all away to keep memory usage
+ // down.
+ const bool clear_dies = extractDIEsIfNeeded(false) > 1 &&
+ clear_dies_if_already_not_parsed;
+ DieArray[0].buildAddressRangeTable(this, debug_aranges);
+
+ // Keep memory down by clearing DIEs if this generate function
+ // caused them to be parsed.
+ if (clear_dies)
+ clearDIEs(true);
+}
+
+DWARFDebugInfoEntryMinimal::InlinedChain
+DWARFCompileUnit::getInlinedChainForAddress(uint64_t Address) {
+ // First, find a subprogram that contains the given address (the root
+ // of inlined chain).
+ extractDIEsIfNeeded(false);
+ const DWARFDebugInfoEntryMinimal *SubprogramDIE = 0;
+ for (size_t i = 0, n = DieArray.size(); i != n; i++) {
+ if (DieArray[i].isSubprogramDIE() &&
+ DieArray[i].addressRangeContainsAddress(this, Address)) {
+ SubprogramDIE = &DieArray[i];
+ break;
+ }
+ }
+ // Get inlined chain rooted at this subprogram DIE.
+ if (!SubprogramDIE)
+ return DWARFDebugInfoEntryMinimal::InlinedChain();
+ return SubprogramDIE->getInlinedChainForAddress(this, Address);
+}
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