DWARFDIE
DWARFDebugInfo::GetDIEForDIEOffset(dw_offset_t die_offset) {
DWARFCompileUnit *cu = GetCompileUnitContainingDIEOffset(die_offset);
if (cu)
return cu->GetDIE(die_offset);
return DWARFDIE();
}
DWARFDIE
DWARFDIE::LookupDeepestBlock (lldb::addr_t file_addr) const
{
if (IsValid())
{
SymbolFileDWARF *dwarf= GetDWARF();
DWARFCompileUnit *cu = GetCU();
DWARFDebugInfoEntry* function_die = nullptr;
DWARFDebugInfoEntry* block_die = nullptr;
if (m_die->LookupAddress (file_addr,
dwarf,
cu,
&function_die,
&block_die))
{
if (block_die && block_die != function_die)
{
if (cu->ContainsDIEOffset(block_die->GetOffset()))
return DWARFDIE(cu, block_die);
else
return DWARFDIE(dwarf->DebugInfo()->GetCompileUnitContainingDIE(DIERef(cu->GetOffset(), block_die->GetOffset())), block_die);
}
}
}
return DWARFDIE();
}
static dw_offset_t
DWARFDebugInfo_ParseCallback
(
SymbolFileDWARF* dwarf2Data,
DWARFCompileUnitSP& cu_sp,
DWARFDebugInfoEntry* die,
const dw_offset_t next_offset,
const uint32_t curr_depth,
void* userData
)
{
DWARFDebugInfo* debug_info = (DWARFDebugInfo*)userData;
DWARFCompileUnit* cu = cu_sp.get();
if (die)
{
cu->AddDIE(*die);
}
else if (cu)
{
debug_info->AddCompileUnit(cu_sp);
}
// Just return the current offset to parse the next CU or DIE entry
return next_offset;
}
DIInliningInfo
DWARFContext::getInliningInfoForAddress(uint64_t Address,
DILineInfoSpecifier Spec) {
DIInliningInfo InliningInfo;
DWARFCompileUnit *CU = getCompileUnitForAddress(Address);
if (!CU)
return InliningInfo;
const DWARFLineTable *LineTable = nullptr;
SmallVector<DWARFDie, 4> InlinedChain;
CU->getInlinedChainForAddress(Address, InlinedChain);
if (InlinedChain.size() == 0) {
// If there is no DIE for address (e.g. it is in unavailable .dwo file),
// try to at least get file/line info from symbol table.
if (Spec.FLIKind != FileLineInfoKind::None) {
DILineInfo Frame;
LineTable = getLineTableForUnit(CU);
if (LineTable &&
LineTable->getFileLineInfoForAddress(Address, CU->getCompilationDir(),
Spec.FLIKind, Frame))
InliningInfo.addFrame(Frame);
}
return InliningInfo;
}
uint32_t CallFile = 0, CallLine = 0, CallColumn = 0;
for (uint32_t i = 0, n = InlinedChain.size(); i != n; i++) {
DWARFDie &FunctionDIE = InlinedChain[i];
DILineInfo Frame;
// Get function name if necessary.
if (const char *Name = FunctionDIE.getSubroutineName(Spec.FNKind))
Frame.FunctionName = Name;
if (Spec.FLIKind != FileLineInfoKind::None) {
if (i == 0) {
// For the topmost frame, initialize the line table of this
// compile unit and fetch file/line info from it.
LineTable = getLineTableForUnit(CU);
// For the topmost routine, get file/line info from line table.
if (LineTable)
LineTable->getFileLineInfoForAddress(Address, CU->getCompilationDir(),
Spec.FLIKind, Frame);
} else {
// Otherwise, use call file, call line and call column from
// previous DIE in inlined chain.
if (LineTable)
LineTable->getFileNameByIndex(CallFile, CU->getCompilationDir(),
Spec.FLIKind, Frame.FileName);
Frame.Line = CallLine;
Frame.Column = CallColumn;
}
// Get call file/line/column of a current DIE.
if (i + 1 < n) {
FunctionDIE.getCallerFrame(CallFile, CallLine, CallColumn);
}
}
InliningInfo.addFrame(Frame);
}
return InliningInfo;
}
DILineInfo DWARFContext::getLineInfoForAddress(uint64_t Address,
DILineInfoSpecifier Specifier) {
DWARFCompileUnit *CU = getCompileUnitForAddress(Address);
if (!CU)
return DILineInfo();
std::string FileName = "<invalid>";
std::string FunctionName = "<invalid>";
uint32_t Line = 0;
uint32_t Column = 0;
if (Specifier.needs(DILineInfoSpecifier::FunctionName)) {
// The address may correspond to instruction in some inlined function,
// so we have to build the chain of inlined functions and take the
// name of the topmost function in it.
const DWARFDebugInfoEntryMinimal::InlinedChain &InlinedChain =
CU->getInlinedChainForAddress(Address);
if (InlinedChain.size() > 0) {
const DWARFDebugInfoEntryMinimal &TopFunctionDIE = InlinedChain[0];
if (const char *Name = TopFunctionDIE.getSubroutineName(CU))
FunctionName = Name;
}
}
if (Specifier.needs(DILineInfoSpecifier::FileLineInfo)) {
const DWARFLineTable *LineTable = getLineTableForCompileUnit(CU);
const bool NeedsAbsoluteFilePath =
Specifier.needs(DILineInfoSpecifier::AbsoluteFilePath);
getFileLineInfoForCompileUnit(CU, LineTable, Address,
NeedsAbsoluteFilePath,
FileName, Line, Column);
}
return DILineInfo(StringRef(FileName), StringRef(FunctionName),
Line, Column);
}
//----------------------------------------------------------------------
// GetDIE()
//
// Get the DIE (Debug Information Entry) with the specified offset.
//----------------------------------------------------------------------
DWARFDIE
DWARFDebugInfo::GetDIE(const DIERef &die_ref) {
DWARFCompileUnit *cu = GetCompileUnit(die_ref);
if (cu)
return cu->GetDIE(die_ref.die_offset);
return DWARFDIE(); // Not found
}
DILineInfo DWARFContext::getLineInfoForAddress(uint64_t address,
DILineInfoSpecifier specifier) {
// First, get the offset of the compile unit.
uint32_t cuOffset = getDebugAranges()->findAddress(address);
// Retrieve the compile unit.
DWARFCompileUnit *cu = getCompileUnitForOffset(cuOffset);
if (!cu)
return DILineInfo();
SmallString<16> fileName("<invalid>");
SmallString<16> functionName("<invalid>");
uint32_t line = 0;
uint32_t column = 0;
if (specifier.needs(DILineInfoSpecifier::FunctionName)) {
const DWARFDebugInfoEntryMinimal *function_die =
cu->getFunctionDIEForAddress(address);
if (function_die) {
if (const char *name = function_die->getSubprogramName(cu))
functionName = name;
}
}
if (specifier.needs(DILineInfoSpecifier::FileLineInfo)) {
// Get the line table for this compile unit.
const DWARFDebugLine::LineTable *lineTable = getLineTableForCompileUnit(cu);
if (lineTable) {
// Get the index of the row we're looking for in the line table.
uint32_t rowIndex = lineTable->lookupAddress(address);
if (rowIndex != -1U) {
const DWARFDebugLine::Row &row = lineTable->Rows[rowIndex];
// Take file/line info from the line table.
const DWARFDebugLine::FileNameEntry &fileNameEntry =
lineTable->Prologue.FileNames[row.File - 1];
fileName = fileNameEntry.Name;
if (specifier.needs(DILineInfoSpecifier::AbsoluteFilePath) &&
sys::path::is_relative(fileName.str())) {
// Append include directory of file (if it is present in line table)
// and compilation directory of compile unit to make path absolute.
const char *includeDir = 0;
if (uint64_t includeDirIndex = fileNameEntry.DirIdx) {
includeDir = lineTable->Prologue
.IncludeDirectories[includeDirIndex - 1];
}
SmallString<16> absFileName;
if (includeDir == 0 || sys::path::is_relative(includeDir)) {
if (const char *compilationDir = cu->getCompilationDir())
sys::path::append(absFileName, compilationDir);
}
if (includeDir) {
sys::path::append(absFileName, includeDir);
}
sys::path::append(absFileName, fileName.str());
fileName = absFileName;
}
line = row.Line;
column = row.Column;
}
}
}
return DILineInfo(fileName, functionName, line, column);
}
DILineInfoTable DWARFContext::getLineInfoForAddressRange(uint64_t Address,
uint64_t Size,
DILineInfoSpecifier Specifier) {
DILineInfoTable Lines;
DWARFCompileUnit *CU = getCompileUnitForAddress(Address);
if (!CU)
return Lines;
std::string FunctionName = "<invalid>";
if (Specifier.needs(DILineInfoSpecifier::FunctionName)) {
// The address may correspond to instruction in some inlined function,
// so we have to build the chain of inlined functions and take the
// name of the topmost function in it.
const DWARFDebugInfoEntryMinimal::InlinedChain &InlinedChain =
CU->getInlinedChainForAddress(Address);
if (InlinedChain.size() > 0) {
const DWARFDebugInfoEntryMinimal &TopFunctionDIE = InlinedChain[0];
if (const char *Name = TopFunctionDIE.getSubroutineName(CU))
FunctionName = Name;
}
}
StringRef FuncNameRef = StringRef(FunctionName);
// If the Specifier says we don't need FileLineInfo, just
// return the top-most function at the starting address.
if (!Specifier.needs(DILineInfoSpecifier::FileLineInfo)) {
Lines.push_back(std::make_pair(Address,
DILineInfo(StringRef("<invalid>"),
FuncNameRef, 0, 0)));
return Lines;
}
const DWARFLineTable *LineTable = getLineTableForCompileUnit(CU);
const bool NeedsAbsoluteFilePath =
Specifier.needs(DILineInfoSpecifier::AbsoluteFilePath);
// Get the index of row we're looking for in the line table.
std::vector<uint32_t> RowVector;
if (!LineTable->lookupAddressRange(Address, Size, RowVector))
return Lines;
uint32_t NumRows = RowVector.size();
for (uint32_t i = 0; i < NumRows; ++i) {
uint32_t RowIndex = RowVector[i];
// Take file number and line/column from the row.
const DWARFDebugLine::Row &Row = LineTable->Rows[RowIndex];
std::string FileName = "<invalid>";
getFileNameForCompileUnit(CU, LineTable, Row.File,
NeedsAbsoluteFilePath, FileName);
Lines.push_back(std::make_pair(Row.Address,
DILineInfo(StringRef(FileName),
FuncNameRef, Row.Line, Row.Column)));
}
return Lines;
}
DIInliningInfo DWARFContext::getInliningInfoForAddress(uint64_t Address,
DILineInfoSpecifier Specifier) {
DWARFCompileUnit *CU = getCompileUnitForAddress(Address);
if (!CU)
return DIInliningInfo();
const DWARFDebugInfoEntryInlinedChain &InlinedChain =
CU->getInlinedChainForAddress(Address);
if (InlinedChain.DIEs.size() == 0)
return DIInliningInfo();
DIInliningInfo InliningInfo;
uint32_t CallFile = 0, CallLine = 0, CallColumn = 0;
const DWARFLineTable *LineTable = 0;
for (uint32_t i = 0, n = InlinedChain.DIEs.size(); i != n; i++) {
const DWARFDebugInfoEntryMinimal &FunctionDIE = InlinedChain.DIEs[i];
std::string FileName = "<invalid>";
std::string FunctionName = "<invalid>";
uint32_t Line = 0;
uint32_t Column = 0;
// Get function name if necessary.
if (Specifier.needs(DILineInfoSpecifier::FunctionName)) {
if (const char *Name = FunctionDIE.getSubroutineName(InlinedChain.U))
FunctionName = Name;
}
if (Specifier.needs(DILineInfoSpecifier::FileLineInfo)) {
const bool NeedsAbsoluteFilePath =
Specifier.needs(DILineInfoSpecifier::AbsoluteFilePath);
if (i == 0) {
// For the topmost frame, initialize the line table of this
// compile unit and fetch file/line info from it.
LineTable = getLineTableForCompileUnit(CU);
// For the topmost routine, get file/line info from line table.
getFileLineInfoForCompileUnit(CU, LineTable, Address,
NeedsAbsoluteFilePath,
FileName, Line, Column);
} else {
// Otherwise, use call file, call line and call column from
// previous DIE in inlined chain.
getFileNameForCompileUnit(CU, LineTable, CallFile,
NeedsAbsoluteFilePath, FileName);
Line = CallLine;
Column = CallColumn;
}
// Get call file/line/column of a current DIE.
if (i + 1 < n) {
FunctionDIE.getCallerFrame(InlinedChain.U, CallFile, CallLine,
CallColumn);
}
}
DILineInfo Frame(StringRef(FileName), StringRef(FunctionName),
Line, Column);
InliningInfo.addFrame(Frame);
}
return InliningInfo;
}
DWARFDebugAranges &
DWARFDebugInfo::GetCompileUnitAranges ()
{
if (m_cu_aranges_ap.get() == NULL && m_dwarf2Data)
{
Log *log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_ARANGES));
m_cu_aranges_ap.reset (new DWARFDebugAranges());
const DWARFDataExtractor &debug_aranges_data = m_dwarf2Data->get_debug_aranges_data();
if (debug_aranges_data.GetByteSize() > 0)
{
if (log)
log->Printf ("DWARFDebugInfo::GetCompileUnitAranges() for \"%s\" from .debug_aranges",
m_dwarf2Data->GetObjectFile()->GetFileSpec().GetPath().c_str());
m_cu_aranges_ap->Extract (debug_aranges_data);
}
// Make a list of all CUs represented by the arange data in the file.
std::set<dw_offset_t> cus_with_data;
for (size_t n=0;n<m_cu_aranges_ap.get()->GetNumRanges();n++)
{
dw_offset_t offset = m_cu_aranges_ap.get()->OffsetAtIndex(n);
if (offset != DW_INVALID_OFFSET)
cus_with_data.insert (offset);
}
// Manually build arange data for everything that wasn't in the .debug_aranges table.
bool printed = false;
const size_t num_compile_units = GetNumCompileUnits();
const bool clear_dies_if_already_not_parsed = true;
for (size_t idx = 0; idx < num_compile_units; ++idx)
{
DWARFCompileUnit* cu = GetCompileUnitAtIndex(idx);
dw_offset_t offset = cu->GetOffset();
if (cus_with_data.find(offset) == cus_with_data.end())
{
if (log)
{
if (!printed)
log->Printf ("DWARFDebugInfo::GetCompileUnitAranges() for \"%s\" by parsing",
m_dwarf2Data->GetObjectFile()->GetFileSpec().GetPath().c_str());
printed = true;
}
cu->BuildAddressRangeTable (m_dwarf2Data, m_cu_aranges_ap.get(), clear_dies_if_already_not_parsed);
}
}
const bool minimize = true;
m_cu_aranges_ap->Sort (minimize);
}
return *m_cu_aranges_ap.get();
}
bool DWARFDebugAranges::generate(DWARFContext *ctx) {
clear();
if (ctx) {
const uint32_t num_compile_units = ctx->getNumCompileUnits();
for (uint32_t cu_idx = 0; cu_idx < num_compile_units; ++cu_idx) {
DWARFCompileUnit *cu = ctx->getCompileUnitAtIndex(cu_idx);
if (cu)
cu->buildAddressRangeTable(this, true);
}
}
return !isEmpty();
}
void DWARFContext::dump(raw_ostream &OS) {
OS << ".debug_abbrev contents:\n";
getDebugAbbrev()->dump(OS);
OS << "\n.debug_info contents:\n";
for (unsigned i = 0, e = getNumCompileUnits(); i != e; ++i)
getCompileUnitAtIndex(i)->dump(OS);
OS << "\n.debug_aranges contents:\n";
DataExtractor arangesData(getARangeSection(), isLittleEndian(), 0);
uint32_t offset = 0;
DWARFDebugArangeSet set;
while (set.extract(arangesData, &offset))
set.dump(OS);
uint8_t savedAddressByteSize = 0;
OS << "\n.debug_lines contents:\n";
for (unsigned i = 0, e = getNumCompileUnits(); i != e; ++i) {
DWARFCompileUnit *cu = getCompileUnitAtIndex(i);
savedAddressByteSize = cu->getAddressByteSize();
unsigned stmtOffset =
cu->getCompileUnitDIE()->getAttributeValueAsUnsigned(cu, DW_AT_stmt_list,
-1U);
if (stmtOffset != -1U) {
DataExtractor lineData(getLineSection(), isLittleEndian(),
savedAddressByteSize);
DWARFDebugLine::DumpingState state(OS);
DWARFDebugLine::parseStatementTable(lineData, &stmtOffset, state);
}
}
OS << "\n.debug_str contents:\n";
DataExtractor strData(getStringSection(), isLittleEndian(), 0);
offset = 0;
uint32_t lastOffset = 0;
while (const char *s = strData.getCStr(&offset)) {
OS << format("0x%8.8x: \"%s\"\n", lastOffset, s);
lastOffset = offset;
}
OS << "\n.debug_ranges contents:\n";
// In fact, different compile units may have different address byte
// sizes, but for simplicity we just use the address byte size of the last
// compile unit (there is no easy and fast way to associate address range
// list and the compile unit it describes).
DataExtractor rangesData(getRangeSection(), isLittleEndian(),
savedAddressByteSize);
offset = 0;
DWARFDebugRangeList rangeList;
while (rangeList.extract(rangesData, &offset))
rangeList.dump(OS);
}
//----------------------------------------------------------------------
// Generate
//----------------------------------------------------------------------
bool DWARFDebugAranges::Generate(SymbolFileDWARF *dwarf2Data) {
Clear();
DWARFDebugInfo *debug_info = dwarf2Data->DebugInfo();
if (debug_info) {
uint32_t cu_idx = 0;
const uint32_t num_compile_units = dwarf2Data->GetNumCompileUnits();
for (cu_idx = 0; cu_idx < num_compile_units; ++cu_idx) {
DWARFCompileUnit *cu = debug_info->GetCompileUnitAtIndex(cu_idx);
if (cu)
cu->BuildAddressRangeTable(dwarf2Data, this);
}
}
return !IsEmpty();
}
DILineInfo DWARFContext::getLineInfoForAddress(uint64_t Address,
DILineInfoSpecifier Spec) {
DILineInfo Result;
DWARFCompileUnit *CU = getCompileUnitForAddress(Address);
if (!CU)
return Result;
getFunctionNameForAddress(CU, Address, Spec.FNKind, Result.FunctionName);
if (Spec.FLIKind != FileLineInfoKind::None) {
if (const DWARFLineTable *LineTable = getLineTableForUnit(CU))
LineTable->getFileLineInfoForAddress(Address, CU->getCompilationDir(),
Spec.FLIKind, Result);
}
return Result;
}
//----------------------------------------------------------------------
// Dump
//
// Dump the contents of this DWARFDebugInfo object as has been parsed
// and/or modified after it has been parsed.
//----------------------------------------------------------------------
void DWARFDebugInfo::Dump(Stream *s, const uint32_t die_offset,
const uint32_t recurse_depth) {
DumpInfo dumpInfo(s, die_offset, recurse_depth);
s->PutCString("Dumping .debug_info section from internal representation\n");
CompileUnitColl::const_iterator pos;
uint32_t curr_depth = 0;
ParseCompileUnitHeadersIfNeeded();
for (pos = m_compile_units.begin(); pos != m_compile_units.end(); ++pos) {
DWARFCompileUnit *cu = pos->get();
DumpCallback(m_dwarf2Data, cu, NULL, 0, curr_depth, &dumpInfo);
const DWARFDIE die = cu->DIE();
if (die)
die.Dump(s, recurse_depth);
}
}
DILineInfoTable
DWARFContext::getLineInfoForAddressRange(uint64_t Address, uint64_t Size,
DILineInfoSpecifier Spec) {
DILineInfoTable Lines;
DWARFCompileUnit *CU = getCompileUnitForAddress(Address);
if (!CU)
return Lines;
std::string FunctionName = "<invalid>";
getFunctionNameForAddress(CU, Address, Spec.FNKind, FunctionName);
// If the Specifier says we don't need FileLineInfo, just
// return the top-most function at the starting address.
if (Spec.FLIKind == FileLineInfoKind::None) {
DILineInfo Result;
Result.FunctionName = FunctionName;
Lines.push_back(std::make_pair(Address, Result));
return Lines;
}
const DWARFLineTable *LineTable = getLineTableForUnit(CU);
// Get the index of row we're looking for in the line table.
std::vector<uint32_t> RowVector;
if (!LineTable->lookupAddressRange(Address, Size, RowVector))
return Lines;
for (uint32_t RowIndex : RowVector) {
// Take file number and line/column from the row.
const DWARFDebugLine::Row &Row = LineTable->Rows[RowIndex];
DILineInfo Result;
LineTable->getFileNameByIndex(Row.File, CU->getCompilationDir(),
Spec.FLIKind, Result.FileName);
Result.FunctionName = FunctionName;
Result.Line = Row.Line;
Result.Column = Row.Column;
Lines.push_back(std::make_pair(Row.Address, Result));
}
return Lines;
}
DWARFDebugAranges &
DWARFDebugInfo::GetCompileUnitAranges ()
{
if (m_cu_aranges_ap.get() == NULL && m_dwarf2Data)
{
LogSP log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_ARANGES));
m_cu_aranges_ap.reset (new DWARFDebugAranges());
const DataExtractor &debug_aranges_data = m_dwarf2Data->get_debug_aranges_data();
if (debug_aranges_data.GetByteSize() > 0)
{
if (log)
log->Printf ("DWARFDebugInfo::GetCompileUnitAranges() for \"%s/%s\" from .debug_aranges",
m_dwarf2Data->GetObjectFile()->GetFileSpec().GetDirectory().GetCString(),
m_dwarf2Data->GetObjectFile()->GetFileSpec().GetFilename().GetCString());
m_cu_aranges_ap->Extract (debug_aranges_data);
}
else
{
if (log)
log->Printf ("DWARFDebugInfo::GetCompileUnitAranges() for \"%s/%s\" by parsing",
m_dwarf2Data->GetObjectFile()->GetFileSpec().GetDirectory().GetCString(),
m_dwarf2Data->GetObjectFile()->GetFileSpec().GetFilename().GetCString());
const uint32_t num_compile_units = GetNumCompileUnits();
uint32_t idx;
const bool clear_dies_if_already_not_parsed = true;
for (idx = 0; idx < num_compile_units; ++idx)
{
DWARFCompileUnit* cu = GetCompileUnitAtIndex(idx);
if (cu)
cu->BuildAddressRangeTable (m_dwarf2Data, m_cu_aranges_ap.get(), clear_dies_if_already_not_parsed);
}
}
const bool minimize = true;
m_cu_aranges_ap->Sort (minimize);
}
return *m_cu_aranges_ap.get();
}
void DWARFContext::dump(raw_ostream &OS) {
OS << ".debug_abbrev contents:\n";
getDebugAbbrev()->dump(OS);
OS << "\n.debug_info contents:\n";
for (unsigned i = 0, e = getNumCompileUnits(); i != e; ++i)
getCompileUnitAtIndex(i)->dump(OS);
OS << "\n.debug_aranges contents:\n";
DataExtractor arangesData(getARangeSection(), isLittleEndian(), 0);
uint32_t offset = 0;
DWARFDebugArangeSet set;
while (set.extract(arangesData, &offset))
set.dump(OS);
OS << "\n.debug_lines contents:\n";
for (unsigned i = 0, e = getNumCompileUnits(); i != e; ++i) {
DWARFCompileUnit *cu = getCompileUnitAtIndex(i);
unsigned stmtOffset =
cu->getCompileUnitDIE()->getAttributeValueAsUnsigned(cu, DW_AT_stmt_list,
-1U);
if (stmtOffset != -1U) {
DataExtractor lineData(getLineSection(), isLittleEndian(),
cu->getAddressByteSize());
DWARFDebugLine::DumpingState state(OS);
DWARFDebugLine::parseStatementTable(lineData, &stmtOffset, state);
}
}
OS << "\n.debug_str contents:\n";
DataExtractor strData(getStringSection(), isLittleEndian(), 0);
offset = 0;
uint32_t lastOffset = 0;
while (const char *s = strData.getCStr(&offset)) {
OS << format("0x%8.8x: \"%s\"\n", lastOffset, s);
lastOffset = offset;
}
}
DILineInfo DWARFContext::getLineInfoForAddress(uint64_t address,
DILineInfoSpecifier specifier) {
// First, get the offset of the compile unit.
uint32_t cuOffset = getDebugAranges()->findAddress(address);
// Retrieve the compile unit.
DWARFCompileUnit *cu = getCompileUnitForOffset(cuOffset);
if (!cu)
return DILineInfo();
const char *fileName = "<invalid>";
const char *functionName = "<invalid>";
uint32_t line = 0;
uint32_t column = 0;
if (specifier.needs(DILineInfoSpecifier::FunctionName)) {
const DWARFDebugInfoEntryMinimal *function_die =
cu->getFunctionDIEForAddress(address);
if (function_die)
functionName = function_die->getSubprogramName(cu);
}
if (specifier.needs(DILineInfoSpecifier::FileLineInfo)) {
// Get the line table for this compile unit.
const DWARFDebugLine::LineTable *lineTable = getLineTableForCompileUnit(cu);
if (lineTable) {
// Get the index of the row we're looking for in the line table.
uint64_t hiPC = cu->getCompileUnitDIE()->getAttributeValueAsUnsigned(
cu, DW_AT_high_pc, -1ULL);
uint32_t rowIndex = lineTable->lookupAddress(address, hiPC);
if (rowIndex != -1U) {
const DWARFDebugLine::Row &row = lineTable->Rows[rowIndex];
// Take file/line info from the line table.
fileName = lineTable->Prologue.FileNames[row.File - 1].Name.c_str();
line = row.Line;
column = row.Column;
}
}
}
return DILineInfo(fileName, functionName, line, column);
}
bool
DWARFDebugPubnames::GeneratePubBaseTypes(SymbolFileDWARF* dwarf2Data)
{
m_sets.clear();
DWARFDebugInfo* debug_info = dwarf2Data->DebugInfo();
if (debug_info)
{
uint32_t cu_idx = 0;
const uint32_t num_compile_units = dwarf2Data->GetNumCompileUnits();
for (cu_idx = 0; cu_idx < num_compile_units; ++cu_idx)
{
DWARFCompileUnit* cu = debug_info->GetCompileUnitAtIndex(cu_idx);
DWARFDIECollection dies;
const size_t die_count = cu->AppendDIEsWithTag (DW_TAG_base_type, dies);
dw_offset_t cu_offset = cu->GetOffset();
DWARFDebugPubnamesSet pubnames_set(DW_INVALID_OFFSET, cu_offset, cu->GetNextCompileUnitOffset() - cu_offset);
size_t die_idx;
for (die_idx = 0; die_idx < die_count; ++die_idx)
{
const DWARFDebugInfoEntry *die = dies.GetDIEPtrAtIndex(die_idx);
const char *name = die->GetAttributeValueAsString(dwarf2Data, cu, DW_AT_name, NULL);
if (name)
{
pubnames_set.AddDescriptor(die->GetOffset() - cu_offset, name);
}
}
if (pubnames_set.NumDescriptors() > 0)
{
m_sets.push_back(pubnames_set);
}
}
}
return !m_sets.empty();
}
//----------------------------------------------------------------------
// LookupAddress
//----------------------------------------------------------------------
DWARFDIE
DWARFDebugInfo::LookupAddress (const dw_addr_t address,
const dw_offset_t hint_die_offset)
{
DWARFDIE die;
DWARFCompileUnit *cu = nullptr;
if (hint_die_offset != DW_INVALID_OFFSET)
{
cu = GetCompileUnit(hint_die_offset);
}
else
{
DWARFDebugAranges &cu_aranges = GetCompileUnitAranges ();
const dw_offset_t cu_offset = cu_aranges.FindAddress (address);
cu = GetCompileUnit(cu_offset);
}
if (cu)
{
die = cu->LookupAddress(address);
}
else
{
// The hint_die_offset may have been a pointer to the actual item that
// we are looking for
die = GetDIE(hint_die_offset);
if (die)
{
DWARFDebugInfoEntry* function_die = nullptr;
if (die.GetDIE()->LookupAddress (address, die.GetDWARF(), die.GetCU(), &function_die, nullptr))
die.Set (die.GetCU(), function_die);
}
}
return die;
}
DIInliningInfo DWARFContext::getInliningInfoForAddress(uint64_t Address,
DILineInfoSpecifier Specifier) {
DIInliningInfo InliningInfo;
DWARFCompileUnit *CU = getCompileUnitForAddress(Address);
if (!CU)
return InliningInfo;
const DWARFLineTable *LineTable = nullptr;
const bool NeedsAbsoluteFilePath =
Specifier.needs(DILineInfoSpecifier::AbsoluteFilePath);
const DWARFDebugInfoEntryInlinedChain &InlinedChain =
CU->getInlinedChainForAddress(Address);
if (InlinedChain.DIEs.size() == 0) {
// If there is no DIE for address (e.g. it is in unavailable .dwo file),
// try to at least get file/line info from symbol table.
if (Specifier.needs(DILineInfoSpecifier::FileLineInfo)) {
DILineInfo Frame;
LineTable = getLineTableForCompileUnit(CU);
if (getFileLineInfoForCompileUnit(CU, LineTable, Address,
NeedsAbsoluteFilePath, Frame)) {
InliningInfo.addFrame(Frame);
}
}
return InliningInfo;
}
uint32_t CallFile = 0, CallLine = 0, CallColumn = 0;
for (uint32_t i = 0, n = InlinedChain.DIEs.size(); i != n; i++) {
const DWARFDebugInfoEntryMinimal &FunctionDIE = InlinedChain.DIEs[i];
DILineInfo Frame;
// Get function name if necessary.
if (Specifier.needs(DILineInfoSpecifier::FunctionName)) {
if (const char *Name = FunctionDIE.getSubroutineName(InlinedChain.U))
Frame.FunctionName = Name;
}
if (Specifier.needs(DILineInfoSpecifier::FileLineInfo)) {
if (i == 0) {
// For the topmost frame, initialize the line table of this
// compile unit and fetch file/line info from it.
LineTable = getLineTableForCompileUnit(CU);
// For the topmost routine, get file/line info from line table.
getFileLineInfoForCompileUnit(CU, LineTable, Address,
NeedsAbsoluteFilePath, Frame);
} else {
// Otherwise, use call file, call line and call column from
// previous DIE in inlined chain.
getFileNameForCompileUnit(CU, LineTable, CallFile,
NeedsAbsoluteFilePath, Frame.FileName);
Frame.Line = CallLine;
Frame.Column = CallColumn;
}
// Get call file/line/column of a current DIE.
if (i + 1 < n) {
FunctionDIE.getCallerFrame(InlinedChain.U, CallFile, CallLine,
CallColumn);
}
}
InliningInfo.addFrame(Frame);
}
return InliningInfo;
}
void DWARFContext::dump(raw_ostream &OS, DIDumpType DumpType) {
if (DumpType == DIDT_All || DumpType == DIDT_Abbrev) {
OS << ".debug_abbrev contents:\n";
getDebugAbbrev()->dump(OS);
}
if (DumpType == DIDT_All || DumpType == DIDT_Info) {
OS << "\n.debug_info contents:\n";
for (unsigned i = 0, e = getNumCompileUnits(); i != e; ++i)
getCompileUnitAtIndex(i)->dump(OS);
}
if (DumpType == DIDT_All || DumpType == DIDT_Frames) {
OS << "\n.debug_frame contents:\n";
getDebugFrame()->dump(OS);
}
uint32_t offset = 0;
if (DumpType == DIDT_All || DumpType == DIDT_Aranges) {
OS << "\n.debug_aranges contents:\n";
DataExtractor arangesData(getARangeSection(), isLittleEndian(), 0);
DWARFDebugArangeSet set;
while (set.extract(arangesData, &offset))
set.dump(OS);
}
uint8_t savedAddressByteSize = 0;
if (DumpType == DIDT_All || DumpType == DIDT_Line) {
OS << "\n.debug_line contents:\n";
for (unsigned i = 0, e = getNumCompileUnits(); i != e; ++i) {
DWARFCompileUnit *cu = getCompileUnitAtIndex(i);
savedAddressByteSize = cu->getAddressByteSize();
unsigned stmtOffset =
cu->getCompileUnitDIE()->getAttributeValueAsUnsigned(cu, DW_AT_stmt_list,
-1U);
if (stmtOffset != -1U) {
DataExtractor lineData(getLineSection(), isLittleEndian(),
savedAddressByteSize);
DWARFDebugLine::DumpingState state(OS);
DWARFDebugLine::parseStatementTable(lineData, &lineRelocMap(), &stmtOffset, state);
}
}
}
if (DumpType == DIDT_All || DumpType == DIDT_Str) {
OS << "\n.debug_str contents:\n";
DataExtractor strData(getStringSection(), isLittleEndian(), 0);
offset = 0;
uint32_t strOffset = 0;
while (const char *s = strData.getCStr(&offset)) {
OS << format("0x%8.8x: \"%s\"\n", strOffset, s);
strOffset = offset;
}
}
if (DumpType == DIDT_All || DumpType == DIDT_Ranges) {
OS << "\n.debug_ranges contents:\n";
// In fact, different compile units may have different address byte
// sizes, but for simplicity we just use the address byte size of the last
// compile unit (there is no easy and fast way to associate address range
// list and the compile unit it describes).
DataExtractor rangesData(getRangeSection(), isLittleEndian(),
savedAddressByteSize);
offset = 0;
DWARFDebugRangeList rangeList;
while (rangeList.extract(rangesData, &offset))
rangeList.dump(OS);
}
if (DumpType == DIDT_All || DumpType == DIDT_Pubnames) {
OS << "\n.debug_pubnames contents:\n";
DataExtractor pubNames(getPubNamesSection(), isLittleEndian(), 0);
offset = 0;
OS << "Length: " << pubNames.getU32(&offset) << "\n";
OS << "Version: " << pubNames.getU16(&offset) << "\n";
OS << "Offset in .debug_info: " << pubNames.getU32(&offset) << "\n";
OS << "Size: " << pubNames.getU32(&offset) << "\n";
OS << "\n Offset Name\n";
while (offset < getPubNamesSection().size()) {
uint32_t n = pubNames.getU32(&offset);
if (n == 0)
break;
OS << format("%8x ", n);
OS << pubNames.getCStr(&offset) << "\n";
}
}
if (DumpType == DIDT_All || DumpType == DIDT_AbbrevDwo) {
OS << "\n.debug_abbrev.dwo contents:\n";
getDebugAbbrevDWO()->dump(OS);
}
if (DumpType == DIDT_All || DumpType == DIDT_InfoDwo) {
OS << "\n.debug_info.dwo contents:\n";
for (unsigned i = 0, e = getNumDWOCompileUnits(); i != e; ++i)
getDWOCompileUnitAtIndex(i)->dump(OS);
}
if (DumpType == DIDT_All || DumpType == DIDT_StrDwo) {
OS << "\n.debug_str.dwo contents:\n";
DataExtractor strDWOData(getStringDWOSection(), isLittleEndian(), 0);
offset = 0;
uint32_t strDWOOffset = 0;
while (const char *s = strDWOData.getCStr(&offset)) {
OS << format("0x%8.8x: \"%s\"\n", strDWOOffset, s);
strDWOOffset = offset;
}
}
if (DumpType == DIDT_All || DumpType == DIDT_StrOffsetsDwo) {
OS << "\n.debug_str_offsets.dwo contents:\n";
DataExtractor strOffsetExt(getStringOffsetDWOSection(), isLittleEndian(), 0);
offset = 0;
while (offset < getStringOffsetDWOSection().size()) {
OS << format("0x%8.8x: ", offset);
OS << format("%8.8x\n", strOffsetExt.getU32(&offset));
}
}
}
bool
DWARFDebugPubnames::GeneratePubnames(SymbolFileDWARF* dwarf2Data)
{
Timer scoped_timer (__PRETTY_FUNCTION__,
"DWARFDebugPubnames::GeneratePubnames (data = %p)",
dwarf2Data);
LogSP log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_PUBNAMES));
if (log)
log->Printf("DWARFDebugPubnames::GeneratePubnames (data = %p)", dwarf2Data);
m_sets.clear();
DWARFDebugInfo* debug_info = dwarf2Data->DebugInfo();
if (debug_info)
{
const DataExtractor* debug_str = &dwarf2Data->get_debug_str_data();
uint32_t cu_idx = 0;
const uint32_t num_compile_units = dwarf2Data->GetNumCompileUnits();
for (cu_idx = 0; cu_idx < num_compile_units; ++cu_idx)
{
DWARFCompileUnit* cu = debug_info->GetCompileUnitAtIndex(cu_idx);
const uint8_t *fixed_form_sizes = DWARFFormValue::GetFixedFormSizesForAddressSize (cu->GetAddressByteSize());
bool clear_dies = cu->ExtractDIEsIfNeeded (false) > 1;
DWARFDIECollection dies;
const size_t die_count = cu->AppendDIEsWithTag (DW_TAG_subprogram, dies) +
cu->AppendDIEsWithTag (DW_TAG_variable, dies);
dw_offset_t cu_offset = cu->GetOffset();
DWARFDebugPubnamesSet pubnames_set(DW_INVALID_OFFSET, cu_offset, cu->GetNextCompileUnitOffset() - cu_offset);
size_t die_idx;
for (die_idx = 0; die_idx < die_count; ++die_idx)
{
const DWARFDebugInfoEntry *die = dies.GetDIEPtrAtIndex(die_idx);
DWARFDebugInfoEntry::Attributes attributes;
const char *name = NULL;
const char *mangled = NULL;
bool add_die = false;
bool is_variable = false;
const size_t num_attributes = die->GetAttributes(dwarf2Data, cu, fixed_form_sizes, attributes);
if (num_attributes > 0)
{
uint32_t i;
dw_tag_t tag = die->Tag();
is_variable = tag == DW_TAG_variable;
for (i=0; i<num_attributes; ++i)
{
dw_attr_t attr = attributes.AttributeAtIndex(i);
DWARFFormValue form_value;
switch (attr)
{
case DW_AT_name:
if (attributes.ExtractFormValueAtIndex(dwarf2Data, i, form_value))
name = form_value.AsCString(debug_str);
break;
case DW_AT_MIPS_linkage_name:
if (attributes.ExtractFormValueAtIndex(dwarf2Data, i, form_value))
mangled = form_value.AsCString(debug_str);
break;
case DW_AT_low_pc:
case DW_AT_ranges:
case DW_AT_entry_pc:
if (tag == DW_TAG_subprogram)
add_die = true;
break;
case DW_AT_location:
if (tag == DW_TAG_variable)
{
const DWARFDebugInfoEntry* parent_die = die->GetParent();
while ( parent_die != NULL )
{
switch (parent_die->Tag())
{
case DW_TAG_subprogram:
case DW_TAG_lexical_block:
case DW_TAG_inlined_subroutine:
// Even if this is a function level static, we don't add it. We could theoretically
// add these if we wanted to by introspecting into the DW_AT_location and seeing
// if the location describes a hard coded address, but we don't want the performance
// penalty of that right now.
add_die = false;
// if (attributes.ExtractFormValueAtIndex(dwarf2Data, i, form_value))
// {
// // If we have valid block data, then we have location expression bytes
// // that are fixed (not a location list).
// const uint8_t *block_data = form_value.BlockData();
// if (block_data)
// {
// uint32_t block_length = form_value.Unsigned();
// if (block_length == 1 + attributes.CompileUnitAtIndex(i)->GetAddressByteSize())
// {
// if (block_data[0] == DW_OP_addr)
// add_die = true;
// }
// }
// }
parent_die = NULL; // Terminate the while loop.
break;
case DW_TAG_compile_unit:
add_die = true;
parent_die = NULL; // Terminate the while loop.
break;
default:
parent_die = parent_die->GetParent(); // Keep going in the while loop.
break;
}
}
}
break;
}
}
}
if (add_die && (name || mangled))
{
pubnames_set.AddDescriptor(die->GetOffset() - cu_offset, mangled ? mangled : name);
}
}
if (pubnames_set.NumDescriptors() > 0)
{
m_sets.push_back(pubnames_set);
}
// Keep memory down by clearing DIEs if this generate function
// caused them to be parsed
if (clear_dies)
cu->ClearDIEs (true);
}
}
if (m_sets.empty())
return false;
if (log)
Dump (log.get());
return true;
}
void DWARFContext::dump(raw_ostream &OS, DIDumpType DumpType) {
if (DumpType == DIDT_All || DumpType == DIDT_Abbrev) {
OS << ".debug_abbrev contents:\n";
getDebugAbbrev()->dump(OS);
}
if (DumpType == DIDT_All || DumpType == DIDT_AbbrevDwo)
if (const DWARFDebugAbbrev *D = getDebugAbbrevDWO()) {
OS << "\n.debug_abbrev.dwo contents:\n";
D->dump(OS);
}
if (DumpType == DIDT_All || DumpType == DIDT_Info) {
OS << "\n.debug_info contents:\n";
for (unsigned i = 0, e = getNumCompileUnits(); i != e; ++i)
getCompileUnitAtIndex(i)->dump(OS);
}
if ((DumpType == DIDT_All || DumpType == DIDT_InfoDwo) &&
getNumDWOCompileUnits()) {
OS << "\n.debug_info.dwo contents:\n";
for (unsigned i = 0, e = getNumDWOCompileUnits(); i != e; ++i)
getDWOCompileUnitAtIndex(i)->dump(OS);
}
if ((DumpType == DIDT_All || DumpType == DIDT_Types) && getNumTypeUnits()) {
OS << "\n.debug_types contents:\n";
for (unsigned i = 0, e = getNumTypeUnits(); i != e; ++i)
getTypeUnitAtIndex(i)->dump(OS);
}
if (DumpType == DIDT_All || DumpType == DIDT_TypesDwo)
if (getNumDWOTypeUnits()) {
OS << "\n.debug_types.dwo contents:\n";
for (unsigned i = 0, e = getNumDWOTypeUnits(); i != e; ++i)
getDWOTypeUnitAtIndex(i)->dump(OS);
}
if (DumpType == DIDT_All || DumpType == DIDT_Loc) {
OS << "\n.debug_loc contents:\n";
getDebugLoc()->dump(OS);
}
if (DumpType == DIDT_All || DumpType == DIDT_Frames) {
OS << "\n.debug_frame contents:\n";
getDebugFrame()->dump(OS);
}
uint32_t offset = 0;
if (DumpType == DIDT_All || DumpType == DIDT_Aranges) {
OS << "\n.debug_aranges contents:\n";
DataExtractor arangesData(getARangeSection(), isLittleEndian(), 0);
DWARFDebugArangeSet set;
while (set.extract(arangesData, &offset))
set.dump(OS);
}
uint8_t savedAddressByteSize = 0;
if (DumpType == DIDT_All || DumpType == DIDT_Line) {
OS << "\n.debug_line contents:\n";
for (unsigned i = 0, e = getNumCompileUnits(); i != e; ++i) {
DWARFCompileUnit *cu = getCompileUnitAtIndex(i);
savedAddressByteSize = cu->getAddressByteSize();
unsigned stmtOffset =
cu->getCompileUnitDIE()->getAttributeValueAsSectionOffset(
cu, DW_AT_stmt_list, -1U);
if (stmtOffset != -1U) {
DataExtractor lineData(getLineSection().Data, isLittleEndian(),
savedAddressByteSize);
DWARFDebugLine::DumpingState state(OS);
DWARFDebugLine::parseStatementTable(lineData, &getLineSection().Relocs, &stmtOffset, state);
}
}
}
if (DumpType == DIDT_All || DumpType == DIDT_Str) {
OS << "\n.debug_str contents:\n";
DataExtractor strData(getStringSection(), isLittleEndian(), 0);
offset = 0;
uint32_t strOffset = 0;
while (const char *s = strData.getCStr(&offset)) {
OS << format("0x%8.8x: \"%s\"\n", strOffset, s);
strOffset = offset;
}
}
if ((DumpType == DIDT_All || DumpType == DIDT_StrDwo) &&
!getStringDWOSection().empty()) {
OS << "\n.debug_str.dwo contents:\n";
DataExtractor strDWOData(getStringDWOSection(), isLittleEndian(), 0);
offset = 0;
uint32_t strDWOOffset = 0;
while (const char *s = strDWOData.getCStr(&offset)) {
OS << format("0x%8.8x: \"%s\"\n", strDWOOffset, s);
strDWOOffset = offset;
}
}
if (DumpType == DIDT_All || DumpType == DIDT_Ranges) {
OS << "\n.debug_ranges contents:\n";
// In fact, different compile units may have different address byte
// sizes, but for simplicity we just use the address byte size of the last
// compile unit (there is no easy and fast way to associate address range
// list and the compile unit it describes).
DataExtractor rangesData(getRangeSection(), isLittleEndian(),
savedAddressByteSize);
offset = 0;
DWARFDebugRangeList rangeList;
while (rangeList.extract(rangesData, &offset))
rangeList.dump(OS);
}
if (DumpType == DIDT_All || DumpType == DIDT_Pubnames)
dumpPubSection(OS, "debug_pubnames", getPubNamesSection(),
isLittleEndian(), false);
if (DumpType == DIDT_All || DumpType == DIDT_Pubtypes)
dumpPubSection(OS, "debug_pubtypes", getPubTypesSection(),
isLittleEndian(), false);
if (DumpType == DIDT_All || DumpType == DIDT_GnuPubnames)
dumpPubSection(OS, "debug_gnu_pubnames", getGnuPubNamesSection(),
isLittleEndian(), true /* GnuStyle */);
if (DumpType == DIDT_All || DumpType == DIDT_GnuPubtypes)
dumpPubSection(OS, "debug_gnu_pubtypes", getGnuPubTypesSection(),
isLittleEndian(), true /* GnuStyle */);
if ((DumpType == DIDT_All || DumpType == DIDT_StrOffsetsDwo) &&
!getStringOffsetDWOSection().empty()) {
OS << "\n.debug_str_offsets.dwo contents:\n";
DataExtractor strOffsetExt(getStringOffsetDWOSection(), isLittleEndian(),
0);
offset = 0;
uint64_t size = getStringOffsetDWOSection().size();
while (offset < size) {
OS << format("0x%8.8x: ", offset);
OS << format("%8.8x\n", strOffsetExt.getU32(&offset));
}
}
}
