#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;
<< " (next CU at " << format("0x%08x", getNextCompileUnitOffset())
<< ")\n";
- getCompileUnitDIE(false)->dump(OS, this, -1U);
+ const DWARFDebugInfoEntryMinimal *CU = getCompileUnitDIE(false);
+ assert(CU && "Null Compile Unit?");
+ CU->dump(OS, this, -1U);
}
const char *DWARFCompileUnit::getCompilationDir() {
curr_die->setParent(die_array_begin);
}
-size_t DWARFCompileUnit::extractDIEsIfNeeded(bool cu_die_only) {
- const size_t initial_die_array_size = DieArray.size();
- if ((cu_die_only && initial_die_array_size > 0) ||
- initial_die_array_size > 1)
- return 0; // Already parsed
+void DWARFCompileUnit::extractDIEsToVector(
+ bool AppendCUDie, bool AppendNonCUDies,
+ std::vector<DWARFDebugInfoEntryMinimal> &Dies) const {
+ if (!AppendCUDie && !AppendNonCUDies)
+ return;
// Set the offset to that of the first DIE and calculate the start of the
// next compilation unit header.
- uint32_t offset = getFirstDIEOffset();
- uint32_t next_cu_offset = getNextCompileUnitOffset();
-
- DWARFDebugInfoEntryMinimal die;
- // Keep a flat array of the DIE for binary lookup by DIE offset
- uint32_t depth = 0;
- // We are in our compile unit, parse starting at the offset
- // we were told to parse
-
- const uint8_t *fixed_form_sizes =
- DWARFFormValue::getFixedFormSizesForAddressSize(getAddressByteSize());
-
- while (offset < next_cu_offset &&
- die.extractFast(this, fixed_form_sizes, &offset)) {
-
- if (depth == 0) {
- uint64_t base_addr =
- die.getAttributeValueAsUnsigned(this, DW_AT_low_pc, -1U);
- if (base_addr == -1U)
- base_addr = die.getAttributeValueAsUnsigned(this, DW_AT_entry_pc, 0);
- setBaseAddress(base_addr);
- }
-
- if (cu_die_only) {
- addDIE(die);
- return 1;
- }
- else if (depth == 0 && initial_die_array_size == 1) {
- // Don't append the CU die as we already did that
+ uint32_t Offset = getFirstDIEOffset();
+ uint32_t NextCUOffset = getNextCompileUnitOffset();
+ DWARFDebugInfoEntryMinimal DIE;
+ uint32_t Depth = 0;
+ const uint8_t *FixedFormSizes =
+ DWARFFormValue::getFixedFormSizes(getAddressByteSize(), getVersion());
+ bool IsCUDie = true;
+
+ while (Offset < NextCUOffset &&
+ DIE.extractFast(this, FixedFormSizes, &Offset)) {
+ if (IsCUDie) {
+ if (AppendCUDie)
+ Dies.push_back(DIE);
+ if (!AppendNonCUDies)
+ break;
+ // The average bytes per DIE entry has been seen to be
+ // around 14-20 so let's pre-reserve the needed memory for
+ // our DIE entries accordingly.
+ Dies.reserve(Dies.size() + getDebugInfoSize() / 14);
+ IsCUDie = false;
} else {
- addDIE (die);
+ Dies.push_back(DIE);
}
- const DWARFAbbreviationDeclaration *abbrDecl =
- die.getAbbreviationDeclarationPtr();
- if (abbrDecl) {
+ const DWARFAbbreviationDeclaration *AbbrDecl =
+ DIE.getAbbreviationDeclarationPtr();
+ if (AbbrDecl) {
// Normal DIE
- if (abbrDecl->hasChildren())
- ++depth;
+ if (AbbrDecl->hasChildren())
+ ++Depth;
} else {
// NULL DIE.
- if (depth > 0)
- --depth;
- if (depth == 0)
+ if (Depth > 0)
+ --Depth;
+ if (Depth == 0)
break; // We are done with this compile unit!
}
-
}
// 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 > NextCUOffset)
+ fprintf(stderr, "warning: DWARF compile unit extends beyond its "
+ "bounds cu 0x%8.8x at 0x%8.8x'\n", getOffset(), Offset);
+}
+
+size_t DWARFCompileUnit::extractDIEsIfNeeded(bool CUDieOnly) {
+ if ((CUDieOnly && DieArray.size() > 0) ||
+ DieArray.size() > 1)
+ return 0; // Already parsed.
+
+ extractDIEsToVector(DieArray.empty(), !CUDieOnly, DieArray);
+
+ // Set the base address of current compile unit.
+ if (!DieArray.empty()) {
+ uint64_t BaseAddr =
+ DieArray[0].getAttributeValueAsUnsigned(this, DW_AT_low_pc, -1U);
+ if (BaseAddr == -1U)
+ BaseAddr = DieArray[0].getAttributeValueAsUnsigned(this, DW_AT_entry_pc, 0);
+ setBaseAddress(BaseAddr);
+ }
setDIERelations();
return DieArray.size();
}
-void DWARFCompileUnit::clearDIEs(bool keep_compile_unit_die) {
- if (DieArray.size() > (unsigned)keep_compile_unit_die) {
+void DWARFCompileUnit::clearDIEs(bool KeepCUDie) {
+ if (DieArray.size() > (unsigned)KeepCUDie) {
// 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
+ // so that when temporary vector goes out of scope, it will destroy the
// contents.
-
+ std::vector<DWARFDebugInfoEntryMinimal> TmpArray;
+ DieArray.swap(TmpArray);
// Save at least the compile unit DIE
- std::vector<DWARFDebugInfoEntryMinimal> tmpArray;
- DieArray.swap(tmpArray);
- if (keep_compile_unit_die)
- DieArray.push_back(tmpArray.front());
+ if (KeepCUDie)
+ DieArray.push_back(TmpArray.front());
}
}
clearDIEs(true);
}
-const DWARFDebugInfoEntryMinimal*
-DWARFCompileUnit::getFunctionDIEForAddress(int64_t address) {
+DWARFDebugInfoEntryInlinedChain
+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].addressRangeContainsAddress(this, address))
- return &DieArray[i];
+ if (DieArray[i].isSubprogramDIE() &&
+ DieArray[i].addressRangeContainsAddress(this, Address)) {
+ SubprogramDIE = &DieArray[i];
+ break;
+ }
}
- return 0;
+ // Get inlined chain rooted at this subprogram DIE.
+ if (!SubprogramDIE)
+ return DWARFDebugInfoEntryInlinedChain();
+ return SubprogramDIE->getInlinedChainForAddress(this, Address);
}
projects / oota-llvm.git / blobdiff