clayborg updated this revision to Diff 145926.
clayborg added a comment.
Remove check for NULL cu_sp shared pointer as Pavel noted.
https://reviews.llvm.org/D46606
Files:
include/lldb/lldb-forward.h
source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp
source/Plugins/SymbolFile/DWARF/DWARFASTParserGo.cpp
source/Plugins/SymbolFile/DWARF/DWARFAttribute.cpp
source/Plugins/SymbolFile/DWARF/DWARFCompileUnit.cpp
source/Plugins/SymbolFile/DWARF/DWARFCompileUnit.h
source/Plugins/SymbolFile/DWARF/DWARFDIE.cpp
source/Plugins/SymbolFile/DWARF/DWARFDIE.h
source/Plugins/SymbolFile/DWARF/DWARFDataExtractor.cpp
source/Plugins/SymbolFile/DWARF/DWARFDataExtractor.h
source/Plugins/SymbolFile/DWARF/DWARFDebugInfo.cpp
source/Plugins/SymbolFile/DWARF/DWARFDebugInfo.h
source/Plugins/SymbolFile/DWARF/DWARFDebugInfoEntry.cpp
source/Plugins/SymbolFile/DWARF/DWARFUnit.cpp
source/Plugins/SymbolFile/DWARF/DWARFUnit.h
source/Plugins/SymbolFile/DWARF/SymbolFileDWARF.cpp
Index: source/Plugins/SymbolFile/DWARF/SymbolFileDWARF.cpp
===================================================================
--- source/Plugins/SymbolFile/DWARF/SymbolFileDWARF.cpp
+++ source/Plugins/SymbolFile/DWARF/SymbolFileDWARF.cpp
@@ -3776,7 +3776,7 @@
location_is_const_value_data = true;
// The constant value will be either a block, a data value or a
// string.
- const DWARFDataExtractor &debug_info_data = get_debug_info_data();
+ auto debug_info_data = die.GetData();
if (DWARFFormValue::IsBlockForm(form_value.Form())) {
// Retrieve the value as a block expression.
uint32_t block_offset =
@@ -3833,13 +3833,12 @@
location_is_const_value_data = false;
has_explicit_location = true;
if (DWARFFormValue::IsBlockForm(form_value.Form())) {
- const DWARFDataExtractor &debug_info_data = get_debug_info_data();
+ auto data = die.GetData();
uint32_t block_offset =
- form_value.BlockData() - debug_info_data.GetDataStart();
+ form_value.BlockData() - data.GetDataStart();
uint32_t block_length = form_value.Unsigned();
- location.CopyOpcodeData(module, get_debug_info_data(),
- block_offset, block_length);
+ location.CopyOpcodeData(module, data, block_offset, block_length);
} else {
const DWARFDataExtractor &debug_loc_data = get_debug_loc_data();
const dw_offset_t debug_loc_offset = form_value.Unsigned();
Index: source/Plugins/SymbolFile/DWARF/DWARFUnit.h
===================================================================
--- source/Plugins/SymbolFile/DWARF/DWARFUnit.h
+++ source/Plugins/SymbolFile/DWARF/DWARFUnit.h
@@ -44,28 +44,57 @@
uint32_t depth = UINT32_MAX) const;
bool Verify(lldb_private::Stream *s) const;
virtual void Dump(lldb_private::Stream *s) const = 0;
+ //------------------------------------------------------------------
+ /// Get the data that contains the DIE information for this unit.
+ ///
+ /// This will return the correct bytes that contain the data for
+ /// this DWARFUnit. It could be .debug_info or .debug_types
+ /// depending on where the data for this unit originates.
+ ///
+ /// @return
+ /// The correct data for the DIE information in this unit.
+ //------------------------------------------------------------------
+ virtual const lldb_private::DWARFDataExtractor &GetData() const = 0;
+ //------------------------------------------------------------------
+ /// Get the size in bytes of the compile unit header.
+ ///
+ /// @return
+ /// Byte size of the compile unit header
+ //------------------------------------------------------------------
+ virtual uint32_t GetHeaderByteSize() const = 0;
// Offset of the initial length field.
dw_offset_t GetOffset() const { return m_offset; }
lldb::user_id_t GetID() const;
- // Size in bytes of the initial length + compile unit header.
- uint32_t Size() const;
+ //------------------------------------------------------------------
+ /// Get the size in bytes of the length field in the header.
+ ///
+ /// In DWARF32 this is just 4 bytes, and DWARF64 it is 12 where 4
+ /// are 0xFFFFFFFF followed by the actual 64 bit length.
+ ///
+ /// @return
+ /// Byte size of the compile unit header length field
+ //------------------------------------------------------------------
+ size_t GetLengthByteSize() const { return IsDWARF64() ? 12 : 4; }
+
bool ContainsDIEOffset(dw_offset_t die_offset) const {
return die_offset >= GetFirstDIEOffset() &&
die_offset < GetNextCompileUnitOffset();
}
- dw_offset_t GetFirstDIEOffset() const { return m_offset + Size(); }
+ dw_offset_t GetFirstDIEOffset() const {
+ return m_offset + GetHeaderByteSize();
+ }
dw_offset_t GetNextCompileUnitOffset() const;
// Size of the CU data (without initial length and without header).
size_t GetDebugInfoSize() const;
// Size of the CU data incl. header but without initial length.
- uint32_t GetLength() const;
- uint16_t GetVersion() const;
+ uint32_t GetLength() const { return m_length; }
+ uint16_t GetVersion() const { return m_version; }
const DWARFAbbreviationDeclarationSet *GetAbbreviations() const;
dw_offset_t GetAbbrevOffset() const;
- uint8_t GetAddressByteSize() const;
- dw_addr_t GetBaseAddress() const;
- dw_addr_t GetAddrBase() const;
- dw_addr_t GetRangesBase() const;
+ uint8_t GetAddressByteSize() const { return m_addr_size; }
+ dw_addr_t GetBaseAddress() const { return m_base_addr; }
+ dw_addr_t GetAddrBase() const { return m_addr_base; }
+ dw_addr_t GetRangesBase() const { return m_ranges_base; }
void SetAddrBase(dw_addr_t addr_base, dw_addr_t ranges_base,
dw_offset_t base_obj_offset);
void ClearDIEs(bool keep_compile_unit_die);
@@ -125,7 +154,7 @@
lldb::LanguageType GetLanguageType();
- bool IsDWARF64() const;
+ bool IsDWARF64() const { return m_is_dwarf64; }
bool GetIsOptimized();
Index: source/Plugins/SymbolFile/DWARF/DWARFUnit.cpp
===================================================================
--- source/Plugins/SymbolFile/DWARF/DWARFUnit.cpp
+++ source/Plugins/SymbolFile/DWARF/DWARFUnit.cpp
@@ -83,16 +83,16 @@
uint32_t depth = 0;
// We are in our compile unit, parse starting at the offset we were told to
// parse
- const DWARFDataExtractor &debug_info_data = m_dwarf->get_debug_info_data();
+ const DWARFDataExtractor &data = GetData();
std::vector<uint32_t> die_index_stack;
die_index_stack.reserve(32);
die_index_stack.push_back(0);
bool prev_die_had_children = false;
DWARFFormValue::FixedFormSizes fixed_form_sizes =
DWARFFormValue::GetFixedFormSizesForAddressSize(GetAddressByteSize(),
- m_is_dwarf64);
+ IsDWARF64());
while (offset < next_cu_offset &&
- die.FastExtract(debug_info_data, this, fixed_form_sizes, &offset)) {
+ die.FastExtract(data, this, fixed_form_sizes, &offset)) {
// if (log)
// log->Printf("0x%8.8x: %*.*s%s%s",
// die.GetOffset(),
@@ -276,35 +276,22 @@
return local_id;
}
-uint32_t DWARFUnit::Size() const { return IsDWARF64() ? 23 : 11; }
-
dw_offset_t DWARFUnit::GetNextCompileUnitOffset() const {
- return m_offset + (IsDWARF64() ? 12 : 4) + GetLength();
+ return m_offset + GetLengthByteSize() + GetLength();
}
size_t DWARFUnit::GetDebugInfoSize() const {
- return (IsDWARF64() ? 12 : 4) + GetLength() - Size();
+ return GetLengthByteSize() + GetLength() - GetHeaderByteSize();
}
-uint32_t DWARFUnit::GetLength() const { return m_length; }
-uint16_t DWARFUnit::GetVersion() const { return m_version; }
-
const DWARFAbbreviationDeclarationSet *DWARFUnit::GetAbbreviations() const {
return m_abbrevs;
}
dw_offset_t DWARFUnit::GetAbbrevOffset() const {
return m_abbrevs ? m_abbrevs->GetOffset() : DW_INVALID_OFFSET;
}
-uint8_t DWARFUnit::GetAddressByteSize() const { return m_addr_size; }
-
-dw_addr_t DWARFUnit::GetBaseAddress() const { return m_base_addr; }
-
-dw_addr_t DWARFUnit::GetAddrBase() const { return m_addr_base; }
-
-dw_addr_t DWARFUnit::GetRangesBase() const { return m_ranges_base; }
-
void DWARFUnit::SetAddrBase(dw_addr_t addr_base,
dw_addr_t ranges_base,
dw_offset_t base_obj_offset) {
@@ -632,8 +619,6 @@
return m_language_type;
}
-bool DWARFUnit::IsDWARF64() const { return m_is_dwarf64; }
-
bool DWARFUnit::GetIsOptimized() {
if (m_is_optimized == eLazyBoolCalculate) {
const DWARFDebugInfoEntry *die = GetUnitDIEPtrOnly();
@@ -1020,3 +1005,4 @@
}
return *m_func_aranges_ap.get();
}
+
Index: source/Plugins/SymbolFile/DWARF/DWARFDebugInfoEntry.cpp
===================================================================
--- source/Plugins/SymbolFile/DWARF/DWARFDebugInfoEntry.cpp
+++ source/Plugins/SymbolFile/DWARF/DWARFDebugInfoEntry.cpp
@@ -196,7 +196,7 @@
bool DWARFDebugInfoEntry::Extract(SymbolFileDWARF *dwarf2Data,
const DWARFUnit *cu,
lldb::offset_t *offset_ptr) {
- const DWARFDataExtractor &debug_info_data = dwarf2Data->get_debug_info_data();
+ const DWARFDataExtractor &debug_info_data = cu->GetData();
// const DWARFDataExtractor& debug_str_data =
// dwarf2Data->get_debug_str_data();
const uint32_t cu_end_offset = cu->GetNextCompileUnitOffset();
@@ -403,8 +403,7 @@
lldb::ModuleSP module = dwarf2Data->GetObjectFile()->GetModule();
if (abbrevDecl) {
- const DWARFDataExtractor &debug_info_data =
- dwarf2Data->get_debug_info_data();
+ const DWARFDataExtractor &debug_info_data = cu->GetData();
if (!debug_info_data.ValidOffset(offset))
return false;
@@ -587,7 +586,7 @@
void DWARFDebugInfoEntry::Dump(SymbolFileDWARF *dwarf2Data,
const DWARFUnit *cu, Stream &s,
uint32_t recurse_depth) const {
- const DWARFDataExtractor &debug_info_data = dwarf2Data->get_debug_info_data();
+ const DWARFDataExtractor &debug_info_data = cu->GetData();
lldb::offset_t offset = m_offset;
if (debug_info_data.ValidOffset(offset)) {
@@ -780,8 +779,7 @@
}
if (abbrevDecl) {
- const DWARFDataExtractor &debug_info_data =
- dwarf2Data->get_debug_info_data();
+ const DWARFDataExtractor &debug_info_data = cu->GetData();
if (fixed_form_sizes.Empty())
fixed_form_sizes = DWARFFormValue::GetFixedFormSizesForAddressSize(
@@ -863,8 +861,7 @@
uint32_t attr_idx = abbrevDecl->FindAttributeIndex(attr);
if (attr_idx != DW_INVALID_INDEX) {
- const DWARFDataExtractor &debug_info_data =
- dwarf2Data->get_debug_info_data();
+ const DWARFDataExtractor &debug_info_data = cu->GetData();
uint32_t idx = 0;
while (idx < attr_idx)
@@ -1789,8 +1786,7 @@
// Make sure the abbreviation code still matches. If it doesn't and the
// DWARF data was mmap'ed, the backing file might have been modified
// which is bad news.
- const uint64_t abbrev_code =
- dwarf2Data->get_debug_info_data().GetULEB128(&offset);
+ const uint64_t abbrev_code = cu->GetData().GetULEB128(&offset);
if (abbrev_decl->Code() == abbrev_code)
return abbrev_decl;
Index: source/Plugins/SymbolFile/DWARF/DWARFDebugInfo.h
===================================================================
--- source/Plugins/SymbolFile/DWARF/DWARFDebugInfo.h
+++ source/Plugins/SymbolFile/DWARF/DWARFDebugInfo.h
@@ -44,13 +44,6 @@
DWARFDIE GetDIEForDIEOffset(dw_offset_t die_offset);
DWARFDIE GetDIE(const DIERef &die_ref);
- void Dump(lldb_private::Stream *s, const uint32_t die_offset,
- const uint32_t recurse_depth);
- static void Parse(SymbolFileDWARF *parser, Callback callback, void *userData);
- static void Verify(lldb_private::Stream *s, SymbolFileDWARF *dwarf2Data);
- static void Dump(lldb_private::Stream *s, SymbolFileDWARF *dwarf2Data,
- const uint32_t die_offset, const uint32_t recurse_depth);
-
enum {
eDumpFlag_Verbose = (1 << 0), // Verbose dumping
eDumpFlag_ShowForm = (1 << 1), // Show the DW_form type
Index: source/Plugins/SymbolFile/DWARF/DWARFDebugInfo.cpp
===================================================================
--- source/Plugins/SymbolFile/DWARF/DWARFDebugInfo.cpp
+++ source/Plugins/SymbolFile/DWARF/DWARFDebugInfo.cpp
@@ -98,7 +98,9 @@
if (m_dwarf2Data != NULL) {
lldb::offset_t offset = 0;
DWARFUnitSP cu_sp;
- while ((cu_sp = DWARFCompileUnit::Extract(m_dwarf2Data, &offset))) {
+ const auto &debug_info_data = m_dwarf2Data->get_debug_info_data();
+ while ((cu_sp = DWARFCompileUnit::Extract(m_dwarf2Data, debug_info_data,
+ &offset))) {
m_compile_units.push_back(cu_sp);
offset = cu_sp->GetNextCompileUnitOffset();
@@ -224,268 +226,3 @@
return DWARFDIE(); // Not found
}
-//----------------------------------------------------------------------
-// Parse
-//
-// Parses the .debug_info section and uses the .debug_abbrev section and
-// various other sections in the SymbolFileDWARF class and calls the supplied
-// callback function each time a compile unit header, or debug information
-// entry is successfully parsed. This function can be used for different tasks
-// such as parsing the file contents into a structured data, dumping, verifying
-// and much more.
-//----------------------------------------------------------------------
-void DWARFDebugInfo::Parse(SymbolFileDWARF *dwarf2Data, Callback callback,
- void *userData) {
- if (dwarf2Data) {
- lldb::offset_t offset = 0;
- uint32_t depth = 0;
- DWARFDebugInfoEntry die;
-
- DWARFUnitSP cu;
- while ((cu = DWARFCompileUnit::Extract(dwarf2Data, &offset))) {
- const dw_offset_t next_cu_offset = cu->GetNextCompileUnitOffset();
-
- depth = 0;
- // Call the callback function with no DIE pointer for the compile unit
- // and get the offset that we are to continue to parse from
- offset = callback(dwarf2Data, cu.get(), NULL, offset, depth, userData);
-
- // Make sure we are within our compile unit
- if (offset < next_cu_offset) {
- // We are in our compile unit, parse starting at the offset we were
- // told to parse
- bool done = false;
- while (!done && die.Extract(dwarf2Data, cu.get(), &offset)) {
- // Call the callback function with DIE pointer that falls within the
- // compile unit
- offset =
- callback(dwarf2Data, cu.get(), &die, offset, depth, userData);
-
- if (die.IsNULL()) {
- if (depth)
- --depth;
- else
- done = true; // We are done with this compile unit!
- } else if (die.HasChildren())
- ++depth;
- }
- }
-
- // Make sure the offset returned is valid, and if not stop parsing.
- // Returning DW_INVALID_OFFSET from this callback is a good way to end
- // all parsing
- if (!dwarf2Data->get_debug_info_data().ValidOffset(offset))
- break;
-
- // Make sure we start on a proper
- offset = next_cu_offset;
- }
- }
-}
-
-typedef struct DumpInfo {
- DumpInfo(Stream *init_strm, uint32_t off, uint32_t depth)
- : strm(init_strm), die_offset(off), recurse_depth(depth),
- found_depth(UINT32_MAX), found_die(false), ancestors() {}
- Stream *strm;
- const uint32_t die_offset;
- const uint32_t recurse_depth;
- uint32_t found_depth;
- bool found_die;
- std::vector<DWARFDebugInfoEntry> ancestors;
-
- DISALLOW_COPY_AND_ASSIGN(DumpInfo);
-} DumpInfo;
-
-//----------------------------------------------------------------------
-// DumpCallback
-//
-// A callback function for the static DWARFDebugInfo::Parse() function
-// that gets called each time a compile unit header or debug information entry
-// is successfully parsed.
-//
-// This function dump DWARF information and obey recurse depth and whether a
-// single DIE is to be dumped (or all of the data).
-//----------------------------------------------------------------------
-static dw_offset_t DumpCallback(SymbolFileDWARF *dwarf2Data,
- DWARFUnit *cu, DWARFDebugInfoEntry *die,
- const dw_offset_t next_offset,
- const uint32_t curr_depth, void *userData) {
- DumpInfo *dumpInfo = (DumpInfo *)userData;
- Stream *s = dumpInfo->strm;
- bool show_parents =
- s->GetFlags().Test(DWARFDebugInfo::eDumpFlag_ShowAncestors);
-
- if (die) {
- // Are we dumping everything?
- if (dumpInfo->die_offset == DW_INVALID_OFFSET) {
- // Yes we are dumping everything. Obey our recurse level though
- if (curr_depth < dumpInfo->recurse_depth)
- die->Dump(dwarf2Data, cu, *s, 0);
- } else {
- // We are dumping a specific DIE entry by offset
- if (dumpInfo->die_offset == die->GetOffset()) {
- // We found the DIE we were looking for, dump it!
- if (show_parents) {
- s->SetIndentLevel(0);
- const uint32_t num_ancestors = dumpInfo->ancestors.size();
- if (num_ancestors > 0) {
- for (uint32_t i = 0; i < num_ancestors - 1; ++i) {
- dumpInfo->ancestors[i].Dump(dwarf2Data, cu, *s, 0);
- s->IndentMore();
- }
- }
- }
-
- dumpInfo->found_depth = curr_depth;
-
- die->Dump(dwarf2Data, cu, *s, 0);
-
- // Note that we found the DIE we were looking for
- dumpInfo->found_die = true;
-
- // Since we are dumping a single DIE, if there are no children we are
- // done!
- if (!die->HasChildren() || dumpInfo->recurse_depth == 0)
- return DW_INVALID_OFFSET; // Return an invalid address to end parsing
- } else if (dumpInfo->found_die) {
- // Are we done with all the children?
- if (curr_depth <= dumpInfo->found_depth)
- return DW_INVALID_OFFSET;
-
- // We have already found our DIE and are printing it's children. Obey
- // our recurse depth and return an invalid offset if we get done
- // dumping all of the children
- if (dumpInfo->recurse_depth == UINT32_MAX ||
- curr_depth <= dumpInfo->found_depth + dumpInfo->recurse_depth)
- die->Dump(dwarf2Data, cu, *s, 0);
- } else if (dumpInfo->die_offset > die->GetOffset()) {
- if (show_parents)
- dumpInfo->ancestors.back() = *die;
- }
- }
-
- // Keep up with our indent level
- if (die->IsNULL()) {
- if (show_parents)
- dumpInfo->ancestors.pop_back();
-
- if (curr_depth <= 1)
- return cu->GetNextCompileUnitOffset();
- else
- s->IndentLess();
- } else if (die->HasChildren()) {
- if (show_parents) {
- DWARFDebugInfoEntry null_die;
- dumpInfo->ancestors.push_back(null_die);
- }
- s->IndentMore();
- }
- } else {
- if (cu == NULL)
- s->PutCString("NULL - cu");
- // We have a compile unit, reset our indent level to zero just in case
- s->SetIndentLevel(0);
-
- // See if we are dumping everything?
- if (dumpInfo->die_offset == DW_INVALID_OFFSET) {
- // We are dumping everything
- if (cu) {
- cu->Dump(s);
- return cu->GetFirstDIEOffset(); // Return true to parse all DIEs in this
- // Compile Unit
- } else {
- return DW_INVALID_OFFSET;
- }
- } else {
- if (show_parents) {
- dumpInfo->ancestors.clear();
- dumpInfo->ancestors.resize(1);
- }
-
- // We are dumping only a single DIE possibly with it's children and we
- // must find it's compile unit before we can dump it properly
- if (cu && dumpInfo->die_offset < cu->GetFirstDIEOffset()) {
- // Not found, maybe the DIE offset provided wasn't correct?
- // *ostrm_ptr << "DIE at offset " << HEX32 << dumpInfo->die_offset << "
- // was not found." << endl;
- return DW_INVALID_OFFSET;
- } else {
- // See if the DIE is in this compile unit?
- if (cu && dumpInfo->die_offset < cu->GetNextCompileUnitOffset()) {
- return next_offset;
- // // We found our compile unit that contains our DIE, just skip to
- // dumping the requested DIE...
- // return dumpInfo->die_offset;
- } else {
- // Skip to the next compile unit as the DIE isn't in the current one!
- if (cu) {
- return cu->GetNextCompileUnitOffset();
- } else {
- return DW_INVALID_OFFSET;
- }
- }
- }
- }
- }
-
- // Just return the current offset to parse the next CU or DIE entry
- return next_offset;
-}
-
-//----------------------------------------------------------------------
-// Dump
-//
-// Dump the information in the .debug_info section to the specified ostream. If
-// die_offset is valid, a single DIE will be dumped. If the die_offset is
-// invalid, all the DWARF information will be dumped. Both cases will obey a
-// "recurse_depth" or how deep to traverse into the children of each DIE entry.
-// A recurse_depth of zero will dump all compile unit headers. A recurse_depth
-// of 1 will dump all compile unit headers and the DW_TAG_compile unit tags. A
-// depth of 2 will also dump all types and functions.
-//----------------------------------------------------------------------
-void DWARFDebugInfo::Dump(Stream *s, SymbolFileDWARF *dwarf2Data,
- const uint32_t die_offset,
- const uint32_t recurse_depth) {
- DumpInfo dumpInfo(s, die_offset, recurse_depth);
- s->PutCString(".debug_info contents");
- if (dwarf2Data->get_debug_info_data().GetByteSize() > 0) {
- if (die_offset == DW_INVALID_OFFSET)
- s->PutCString(":\n");
- else {
- s->Printf(" for DIE entry at .debug_info[0x%8.8x]", die_offset);
- if (recurse_depth != UINT32_MAX)
- s->Printf(" recursing %u levels deep.", recurse_depth);
- s->EOL();
- }
- } else {
- s->PutCString(": < EMPTY >\n");
- return;
- }
- DWARFDebugInfo::Parse(dwarf2Data, DumpCallback, &dumpInfo);
-}
-
-//----------------------------------------------------------------------
-// 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) {
- DWARFUnit *cu = pos->get();
- DumpCallback(m_dwarf2Data, cu, NULL, 0, curr_depth, &dumpInfo);
-
- const DWARFDIE die = cu->DIE();
- if (die)
- die.Dump(s, recurse_depth);
- }
-}
Index: source/Plugins/SymbolFile/DWARF/DWARFDataExtractor.h
===================================================================
--- source/Plugins/SymbolFile/DWARF/DWARFDataExtractor.h
+++ source/Plugins/SymbolFile/DWARF/DWARFDataExtractor.h
@@ -29,7 +29,7 @@
dw_offset_t GetDWARFOffset(lldb::offset_t *offset_ptr) const;
size_t GetDWARFSizeofInitialLength() const { return m_is_dwarf64 ? 12 : 4; }
-
+ size_t GetDWARFSizeOfOffset() const { return m_is_dwarf64 ? 8 : 4; }
bool IsDWARF64() const { return m_is_dwarf64; }
protected:
Index: source/Plugins/SymbolFile/DWARF/DWARFDataExtractor.cpp
===================================================================
--- source/Plugins/SymbolFile/DWARF/DWARFDataExtractor.cpp
+++ source/Plugins/SymbolFile/DWARF/DWARFDataExtractor.cpp
@@ -22,6 +22,6 @@
dw_offset_t
DWARFDataExtractor::GetDWARFOffset(lldb::offset_t *offset_ptr) const {
- return GetMaxU64(offset_ptr, m_is_dwarf64 ? 8 : 4);
+ return GetMaxU64(offset_ptr, GetDWARFSizeOfOffset());
}
}
Index: source/Plugins/SymbolFile/DWARF/DWARFDIE.h
===================================================================
--- source/Plugins/SymbolFile/DWARF/DWARFDIE.h
+++ source/Plugins/SymbolFile/DWARF/DWARFDIE.h
@@ -87,6 +87,16 @@
GetContainingDWOModuleDIE() const;
//----------------------------------------------------------------------
+ // Get the data that contains the attribute values for this DIE. Support
+ // for .debug_types means that any DIE can have its data either in the
+ // .debug_info or the .debug_types section; this method will return the
+ // correct section data.
+ //
+ // Clients must validate that this object is valid before calling this.
+ //----------------------------------------------------------------------
+ const lldb_private::DWARFDataExtractor &GetData() const;
+
+ //----------------------------------------------------------------------
// Accessing information about a DIE
//----------------------------------------------------------------------
dw_tag_t Tag() const;
Index: source/Plugins/SymbolFile/DWARF/DWARFDIE.cpp
===================================================================
--- source/Plugins/SymbolFile/DWARF/DWARFDIE.cpp
+++ source/Plugins/SymbolFile/DWARF/DWARFDIE.cpp
@@ -460,3 +460,9 @@
bool operator!=(const DWARFDIE &lhs, const DWARFDIE &rhs) {
return !(lhs == rhs);
}
+
+const DWARFDataExtractor &DWARFDIE::GetData() const {
+ // Clients must check if this DIE is valid before calling this function.
+ assert(IsValid());
+ return m_cu->GetData();
+}
Index: source/Plugins/SymbolFile/DWARF/DWARFCompileUnit.h
===================================================================
--- source/Plugins/SymbolFile/DWARF/DWARFCompileUnit.h
+++ source/Plugins/SymbolFile/DWARF/DWARFCompileUnit.h
@@ -17,9 +17,30 @@
public:
static DWARFUnitSP Extract(SymbolFileDWARF *dwarf2Data,
- lldb::offset_t *offset_ptr);
+ const lldb_private::DWARFDataExtractor &debug_info,
+ lldb::offset_t *offset_ptr);
void Dump(lldb_private::Stream *s) const override;
+ //------------------------------------------------------------------
+ /// Get the data that contains the DIE information for this unit.
+ ///
+ /// @return
+ /// The correct data (.debug_types for DWARF 4 and earlier, and
+ /// .debug_info for DWARF 5 and later) for the DIE information in
+ /// this unit.
+ //------------------------------------------------------------------
+ const lldb_private::DWARFDataExtractor &GetData() const override;
+
+ //------------------------------------------------------------------
+ /// Get the size in bytes of the header.
+ ///
+ /// @return
+ /// Byte size of the compile unit header
+ //------------------------------------------------------------------
+ uint32_t GetHeaderByteSize() const override {
+ return m_is_dwarf64 ? 23 : 11;
+ }
+
private:
DWARFCompileUnit(SymbolFileDWARF *dwarf2Data);
DISALLOW_COPY_AND_ASSIGN(DWARFCompileUnit);
Index: source/Plugins/SymbolFile/DWARF/DWARFCompileUnit.cpp
===================================================================
--- source/Plugins/SymbolFile/DWARF/DWARFCompileUnit.cpp
+++ source/Plugins/SymbolFile/DWARF/DWARFCompileUnit.cpp
@@ -20,15 +20,11 @@
: DWARFUnit(dwarf2Data) {}
DWARFUnitSP DWARFCompileUnit::Extract(SymbolFileDWARF *dwarf2Data,
- lldb::offset_t *offset_ptr) {
+ const DWARFDataExtractor &debug_info,
+ lldb::offset_t *offset_ptr) {
// std::make_shared would require the ctor to be public.
std::shared_ptr<DWARFCompileUnit> cu_sp(new DWARFCompileUnit(dwarf2Data));
- // Out of memory?
- if (cu_sp.get() == NULL)
- return nullptr;
- const DWARFDataExtractor &debug_info = dwarf2Data->get_debug_info_data();
-
cu_sp->m_offset = *offset_ptr;
if (debug_info.ValidOffset(*offset_ptr)) {
@@ -67,3 +63,8 @@
m_offset, m_length, m_version, GetAbbrevOffset(), m_addr_size,
GetNextCompileUnitOffset());
}
+
+
+const lldb_private::DWARFDataExtractor &DWARFCompileUnit::GetData() const {
+ return m_dwarf->get_debug_info_data();
+}
Index: source/Plugins/SymbolFile/DWARF/DWARFAttribute.cpp
===================================================================
--- source/Plugins/SymbolFile/DWARF/DWARFAttribute.cpp
+++ source/Plugins/SymbolFile/DWARF/DWARFAttribute.cpp
@@ -52,8 +52,7 @@
form_value.SetCompileUnit(cu);
form_value.SetForm(FormAtIndex(i));
lldb::offset_t offset = DIEOffsetAtIndex(i);
- return form_value.ExtractValue(
- cu->GetSymbolFileDWARF()->get_debug_info_data(), &offset);
+ return form_value.ExtractValue(cu->GetData(), &offset);
}
uint64_t DWARFAttributes::FormValueAsUnsigned(dw_attr_t attr,
Index: source/Plugins/SymbolFile/DWARF/DWARFASTParserGo.cpp
===================================================================
--- source/Plugins/SymbolFile/DWARF/DWARFASTParserGo.cpp
+++ source/Plugins/SymbolFile/DWARF/DWARFASTParserGo.cpp
@@ -655,8 +655,7 @@
if (form_value.BlockData()) {
Value initialValue(0);
Value memberOffset(0);
- const DWARFDataExtractor &debug_info_data =
- die.GetDWARF()->get_debug_info_data();
+ const DWARFDataExtractor &debug_info_data = die.GetData();
uint32_t block_length = form_value.Unsigned();
uint32_t block_offset =
form_value.BlockData() - debug_info_data.GetDataStart();
Index: source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp
===================================================================
--- source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp
+++ source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp
@@ -2868,8 +2868,7 @@
if (form_value.BlockData()) {
Value initialValue(0);
Value memberOffset(0);
- const DWARFDataExtractor &debug_info_data =
- die.GetDWARF()->get_debug_info_data();
+ const DWARFDataExtractor &debug_info_data = die.GetData();
uint32_t block_length = form_value.Unsigned();
uint32_t block_offset =
form_value.BlockData() - debug_info_data.GetDataStart();
@@ -3330,8 +3329,7 @@
if (form_value.BlockData()) {
Value initialValue(0);
Value memberOffset(0);
- const DWARFDataExtractor &debug_info_data =
- die.GetDWARF()->get_debug_info_data();
+ const DWARFDataExtractor &debug_info_data = die.GetData();
uint32_t block_length = form_value.Unsigned();
uint32_t block_offset =
form_value.BlockData() - debug_info_data.GetDataStart();
Index: include/lldb/lldb-forward.h
===================================================================
--- include/lldb/lldb-forward.h
+++ include/lldb/lldb-forward.h
@@ -76,6 +76,7 @@
class ConstString;
class CXXSyntheticChildren;
class DWARFCallFrameInfo;
+class DWARFDataExtractor;
class DWARFExpression;
class DataBuffer;
class DataEncoder;
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