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Generate local variable and scope information and equivalent dwarf forms.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26989 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jim Laskey
2006-03-23 18:07:55 +00:00
parent 43970fec32
commit b8509c5752
5 changed files with 660 additions and 114 deletions
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324
lib/CodeGen/DwarfWriter.cpp
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@@ -18,9 +18,11 @@
#include "llvm/Type.h"
#include "llvm/CodeGen/AsmPrinter.h"
#include "llvm/CodeGen/MachineDebugInfo.h"
#include "llvm/CodeGen/MachineLocation.h"
#include "llvm/Support/Dwarf.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Mangler.h"
#include "llvm/Target/MRegisterInfo.h"
#include "llvm/Target/TargetMachine.h"
#include <iostream>
@@ -47,7 +49,7 @@ class CompileUnit {
private:
CompileUnitDesc *Desc; // Compile unit debug descriptor.
unsigned ID; // File ID for source.
DIE *Die; // Compile unit die.
DIE *Die; // Compile unit debug information entry.
std::map<std::string, DIE *> Globals; // A map of globally visible named
// entities for this unit.
@@ -153,6 +155,12 @@ public:
Data.push_back(DIEAbbrevData(Attribute, Form));
}
/// AddFirstAttribute - Adds a set of attribute information to the front
/// of the abbreviation.
void AddFirstAttribute(unsigned Attribute, unsigned Form) {
Data.insert(Data.begin(), DIEAbbrevData(Attribute, Form));
}
/// Emit - Print the abbreviation using the specified Dwarf writer.
///
void Emit(const DwarfWriter &DW) const;
@@ -321,11 +329,11 @@ struct DIEntry : public DIEValue {
static bool classof(const DIEntry *) { return true; }
static bool classof(const DIEValue *E) { return E->Type == isEntry; }
/// EmitValue - Emit die entry offset.
/// EmitValue - Emit debug information entry offset.
///
virtual void EmitValue(const DwarfWriter &DW, unsigned Form) const;
/// SizeOf - Determine size of die entry in bytes.
/// SizeOf - Determine size of debug information entry in bytes.
///
virtual unsigned SizeOf(const DwarfWriter &DW, unsigned Form) const;
};
@@ -424,6 +432,10 @@ public:
/// SiblingOffset - Return the offset of the debug information entry's
/// sibling.
unsigned SiblingOffset() const { return Offset + Size; }
/// AddSiblingOffset - Add a sibling offset field to the front of the DIE.
///
void AddSiblingOffset();
/// AddUInt - Add an unsigned integer attribute data and value.
///
@@ -591,9 +603,13 @@ unsigned DIEInteger::BestForm(bool IsSigned) {
void DIEInteger::EmitValue(const DwarfWriter &DW, unsigned Form) const {
switch (Form) {
case DW_FORM_flag: // Fall thru
case DW_FORM_ref1: // Fall thru
case DW_FORM_data1: DW.EmitInt8(Integer); break;
case DW_FORM_ref2: // Fall thru
case DW_FORM_data2: DW.EmitInt16(Integer); break;
case DW_FORM_ref4: // Fall thru
case DW_FORM_data4: DW.EmitInt32(Integer); break;
case DW_FORM_ref8: // Fall thru
case DW_FORM_data8: DW.EmitInt64(Integer); break;
case DW_FORM_udata: DW.EmitULEB128Bytes(Integer); break;
case DW_FORM_sdata: DW.EmitSLEB128Bytes(Integer); break;
@@ -606,9 +622,13 @@ void DIEInteger::EmitValue(const DwarfWriter &DW, unsigned Form) const {
unsigned DIEInteger::SizeOf(const DwarfWriter &DW, unsigned Form) const {
switch (Form) {
case DW_FORM_flag: // Fall thru
case DW_FORM_ref1: // Fall thru
case DW_FORM_data1: return sizeof(int8_t);
case DW_FORM_ref2: // Fall thru
case DW_FORM_data2: return sizeof(int16_t);
case DW_FORM_ref4: // Fall thru
case DW_FORM_data4: return sizeof(int32_t);
case DW_FORM_ref8: // Fall thru
case DW_FORM_data8: return sizeof(int64_t);
case DW_FORM_udata: return DW.SizeULEB128(Integer);
case DW_FORM_sdata: return DW.SizeSLEB128(Integer);
@@ -674,13 +694,13 @@ unsigned DIEDelta::SizeOf(const DwarfWriter &DW, unsigned Form) const {
}
//===----------------------------------------------------------------------===//
/// EmitValue - Emit die entry offset.
/// EmitValue - Emit debug information entry offset.
///
void DIEntry::EmitValue(const DwarfWriter &DW, unsigned Form) const {
DW.EmitInt32(Entry->getOffset());
}
/// SizeOf - Determine size of die value in bytes.
/// SizeOf - Determine size of debug information entry value in bytes.
///
unsigned DIEntry::SizeOf(const DwarfWriter &DW, unsigned Form) const {
return sizeof(int32_t);
@@ -818,6 +838,14 @@ DIE::~DIE() {
}
}
/// AddSiblingOffset - Add a sibling offset field to the front of the DIE.
///
void DIE::AddSiblingOffset() {
DIEInteger *DI = new DIEInteger(0);
Values.insert(Values.begin(), DI);
Abbrev->AddFirstAttribute(DW_AT_sibling, DW_FORM_ref4);
}
/// AddUInt - Add an unsigned integer attribute data and value.
///
void DIE::AddUInt(unsigned Attribute, unsigned Form, uint64_t Integer) {
@@ -924,6 +952,12 @@ void DwarfWriter::EOL(const std::string &Comment) const {
O << "\n";
}
/// EmitAlign - Print a align directive.
///
void DwarfWriter::EmitAlign(unsigned Alignment) const {
O << Asm->AlignDirective << Alignment << "\n";
}
/// EmitULEB128Bytes - Emit an assembler byte data directive to compose an
/// unsigned leb128 value.
void DwarfWriter::EmitULEB128Bytes(unsigned Value) const {
@@ -1159,6 +1193,18 @@ DWLabel DwarfWriter::NewString(const std::string &String) {
return DWLabel("string", StringID);
}
/// AddSourceLine - Add location information to specified debug information
/// entry.
void DwarfWriter::AddSourceLine(DIE *Die, CompileUnitDesc *File, unsigned Line) {
if (File && Line) {
CompileUnit *FileUnit = FindCompileUnit(File);
unsigned FileID = FileUnit->getID();
Die->AddUInt(DW_AT_decl_file, 0, FileID);
Die->AddUInt(DW_AT_decl_line, 0, Line);
}
}
/// NewBasicType - Creates a new basic type if necessary, then adds to the
/// owner.
/// FIXME - Should never be needed.
@@ -1320,24 +1366,18 @@ DIE *DwarfWriter::NewType(DIE *Context, TypeDesc *TyDesc) {
// Extract the basic information.
const std::string &Name = MemberDesc->getName();
unsigned Line = MemberDesc->getLine();
TypeDesc *MemTy = MemberDesc->getFromType();
uint64_t Size = MemberDesc->getSize();
uint64_t Align = MemberDesc->getAlign();
uint64_t Offset = MemberDesc->getOffset();
// Construct member die.
// Construct member debug information entry.
DIE *Member = new DIE(DW_TAG_member);
// Add details.
// Add name if not "".
if (!Name.empty()) Member->AddString(DW_AT_name, DW_FORM_string, Name);
if (CompileUnitDesc *File = MemberDesc->getFile()) {
CompileUnit *FileUnit = FindCompileUnit(File);
unsigned FileID = FileUnit->getID();
int Line = MemberDesc->getLine();
Member->AddUInt(DW_AT_decl_file, 0, FileID);
Member->AddUInt(DW_AT_decl_line, 0, Line);
}
// Add location if available.
AddSourceLine(Member, MemberDesc->getFile(), MemberDesc->getLine());
// Most of the time the field info is the same as the members.
uint64_t FieldSize = Size;
@@ -1406,14 +1446,8 @@ DIE *DwarfWriter::NewType(DIE *Context, TypeDesc *TyDesc) {
if (Size) Ty->AddUInt(DW_AT_byte_size, 0, Size);
// Add name if not anonymous or intermediate type.
if (!Name.empty()) Ty->AddString(DW_AT_name, DW_FORM_string, Name);
// Add source line info if present.
if (CompileUnitDesc *File = TyDesc->getFile()) {
CompileUnit *FileUnit = FindCompileUnit(File);
unsigned FileID = FileUnit->getID();
int Line = TyDesc->getLine();
Ty->AddUInt(DW_AT_decl_file, 0, FileID);
Ty->AddUInt(DW_AT_decl_line, 0, Line);
}
// Add source line info if available.
AddSourceLine(Ty, TyDesc->getFile(), TyDesc->getLine());
// Add to context owner.
Context->AddChild(Ty);
@@ -1421,7 +1455,7 @@ DIE *DwarfWriter::NewType(DIE *Context, TypeDesc *TyDesc) {
return Slot;
}
/// NewCompileUnit - Create new compile unit and it's die.
/// NewCompileUnit - Create new compile unit and it's debug information entry.
///
CompileUnit *DwarfWriter::NewCompileUnit(CompileUnitDesc *UnitDesc,
unsigned ID) {
@@ -1435,7 +1469,7 @@ CompileUnit *DwarfWriter::NewCompileUnit(CompileUnitDesc *UnitDesc,
Die->AddString(DW_AT_name, DW_FORM_string, UnitDesc->getFileName());
Die->AddString(DW_AT_comp_dir, DW_FORM_string, UnitDesc->getDirectory());
// Add die to descriptor map.
// Add debug information entry to descriptor map.
DescToDieMap[UnitDesc] = Die;
// Construct compile unit.
@@ -1472,20 +1506,20 @@ DIE *DwarfWriter::NewGlobalVariable(GlobalVariableDesc *GVD) {
// Gather the details (simplify add attribute code.)
const std::string &Name = GVD->getName();
unsigned FileID = Unit->getID();
unsigned Line = GVD->getLine();
// Get the global's type.
DIE *Type = NewType(Unit->getDie(), GVD->getTypeDesc());
DIE *Type = NewType(Unit->getDie(), GVD->getType());
// Create the globale variable DIE.
DIE *VariableDie = new DIE(DW_TAG_variable);
VariableDie->AddString (DW_AT_name, DW_FORM_string, Name);
VariableDie->AddUInt (DW_AT_decl_file, 0, FileID);
VariableDie->AddUInt (DW_AT_decl_line, 0, Line);
VariableDie->AddDIEntry (DW_AT_type, DW_FORM_ref4, Type);
VariableDie->AddUInt (DW_AT_external, DW_FORM_flag, 1);
// Add source line info if available.
AddSourceLine(VariableDie, UnitDesc, GVD->getLine());
// Add address.
DIEBlock *Block = new DIEBlock();
Block->AddUInt(DW_FORM_data1, DW_OP_addr);
Block->AddObjectLabel(DW_FORM_udata, MangledName);
@@ -1518,20 +1552,17 @@ DIE *DwarfWriter::NewSubprogram(SubprogramDesc *SPD) {
// Gather the details (simplify add attribute code.)
const std::string &Name = SPD->getName();
CompileUnitDesc *FileDesc = static_cast<CompileUnitDesc *>(SPD->getFile());
CompileUnit *File = FindCompileUnit(FileDesc);
unsigned FileID = File->getID();
DIE *Type = NewBasicType(Unit->getDie(), Type::IntTy);
unsigned Line = SPD->getLine();
unsigned IsExternal = SPD->isStatic() ? 0 : 1;
DIE *SubprogramDie = new DIE(DW_TAG_subprogram);
SubprogramDie->AddString (DW_AT_name, DW_FORM_string, Name);
SubprogramDie->AddUInt (DW_AT_decl_file, 0, FileID);
SubprogramDie->AddUInt (DW_AT_decl_line, 0, Line);
SubprogramDie->AddDIEntry (DW_AT_type, DW_FORM_ref4, Type);
SubprogramDie->AddUInt (DW_AT_external, DW_FORM_flag, IsExternal);
// Add source line info if available.
AddSourceLine(SubprogramDie, UnitDesc, SPD->getLine());
// Add to map.
Slot = SubprogramDie;
@@ -1544,6 +1575,119 @@ DIE *DwarfWriter::NewSubprogram(SubprogramDesc *SPD) {
return SubprogramDie;
}
/// NewScopeVariable - Create a new scope variable.
///
DIE *DwarfWriter::NewScopeVariable(DebugVariable *DV, CompileUnit *Unit) {
// Get the descriptor.
VariableDesc *VD = DV->getDesc();
// Translate tag to proper Dwarf tag. The result variable is dropped for now.
unsigned Tag;
switch (VD->getTag()) {
case DW_TAG_return_variable: return NULL;
case DW_TAG_arg_variable: Tag = DW_TAG_formal_parameter; break;
case DW_TAG_auto_variable: // fall thru
default: Tag = DW_TAG_variable; break;
}
// Define variable debug information entry.
DIE *VariableDie = new DIE(Tag);
VariableDie->AddString(DW_AT_name, DW_FORM_string, VD->getName());
// Add source line info if available.
AddSourceLine(VariableDie, VD->getFile(), VD->getLine());
// Add variable type.
DIE *Type = NewType(Unit->getDie(), VD->getType());
VariableDie->AddDIEntry(DW_AT_type, DW_FORM_ref4, Type);
// Get variable address.
MachineLocation Location;
Asm->TM.getRegisterInfo()->getLocation(*MF, DV->getFrameIndex(), Location);
// Add computation for variable.
DIEBlock *Block = new DIEBlock();
if (Location.isRegister()) {
// FIXME - This is a real hack.
Block->AddUInt(DW_FORM_data1, DW_OP_reg0 + Location.getRegister());
} else {
// FIXME - This is a real hack.
Block->AddUInt(DW_FORM_data1, DW_OP_breg0 + Location.getRegister());
Block->AddUInt(DW_FORM_sdata, Location.getOffset());
}
Block->ComputeSize(*this);
VariableDie->AddBlock(DW_AT_location, 0, Block);
return VariableDie;
}
/// ConstructScope - Construct the components of a scope.
///
void DwarfWriter::ConstructScope(DebugScope *ParentScope,
DIE *ParentDie, CompileUnit *Unit) {
// Add variables to scope.
std::vector<DebugVariable *> &Variables = ParentScope->getVariables();
for (unsigned i = 0, N = Variables.size(); i < N; ++i) {
DIE *VariableDie = NewScopeVariable(Variables[i], Unit);
if (VariableDie) ParentDie->AddChild(VariableDie);
}
// Add nested scopes.
std::vector<DebugScope *> &Scopes = ParentScope->getScopes();
for (unsigned j = 0, M = Scopes.size(); j < M; ++j) {
// Define the Scope debug information entry.
DebugScope *Scope = Scopes[j];
// FIXME - Ignore inlined functions for the time being.
if (Scope->getParent()) continue;
DIE *ScopeDie = new DIE(DW_TAG_lexical_block);
// Add the scope bounds.
if (unsigned StartID = Scope->getStartLabelID()) {
ScopeDie->AddLabel(DW_AT_low_pc, DW_FORM_addr,
DWLabel("loc", StartID));
} else {
ScopeDie->AddLabel(DW_AT_low_pc, DW_FORM_addr,
DWLabel("func_begin", SubprogramCount));
}
if (unsigned EndID = Scope->getEndLabelID()) {
ScopeDie->AddLabel(DW_AT_high_pc, DW_FORM_addr,
DWLabel("loc", EndID));
} else {
ScopeDie->AddLabel(DW_AT_high_pc, DW_FORM_addr,
DWLabel("func_end", SubprogramCount));
}
// Add the scope contents.
ConstructScope(Scope, ScopeDie, Unit);
ParentDie->AddChild(ScopeDie);
}
}
/// ConstructRootScope - Construct the scope for the subprogram.
///
void DwarfWriter::ConstructRootScope(DebugScope *RootScope) {
// Exit if there is no root scope.
if (!RootScope) return;
// Get the subprogram debug information entry.
SubprogramDesc *SPD = cast<SubprogramDesc>(RootScope->getDesc());
DIE *SPDie = DescToDieMap[SPD];
assert(SPDie && "Missing subprogram descriptor");
// Add the function bounds.
SPDie->AddLabel(DW_AT_low_pc, DW_FORM_addr,
DWLabel("func_begin", SubprogramCount));
SPDie->AddLabel(DW_AT_high_pc, DW_FORM_addr,
DWLabel("func_end", SubprogramCount));
CompileUnitDesc *UnitDesc = static_cast<CompileUnitDesc *>(SPD->getContext());
CompileUnit *Unit = FindCompileUnit(UnitDesc);
ConstructScope(RootScope, SPDie, Unit);
}
/// EmitInitial - Emit initial Dwarf declarations. This is necessary for cc
/// tools to recognize the object file contains Dwarf information.
///
@@ -1625,8 +1769,6 @@ void DwarfWriter::EmitDIE(DIE *Die) const {
const std::vector<DIE *> &Children = Die->getChildren();
for (unsigned j = 0, M = Children.size(); j < M; ++j) {
// FIXME - handle sibling offsets.
// FIXME - handle all DIE types.
EmitDIE(Children[j]);
}
@@ -1636,7 +1778,13 @@ void DwarfWriter::EmitDIE(DIE *Die) const {
/// SizeAndOffsetDie - Compute the size and offset of a DIE.
///
unsigned DwarfWriter::SizeAndOffsetDie(DIE *Die, unsigned Offset) {
unsigned DwarfWriter::SizeAndOffsetDie(DIE *Die, unsigned Offset, bool Last) {
// Get the children.
const std::vector<DIE *> &Children = Die->getChildren();
// If not last sibling and has children then add sibling offset attribute.
if (!Last && !Children.empty()) Die->AddSiblingOffset();
// Record the abbreviation.
Die->Complete(*this);
@@ -1660,13 +1808,12 @@ unsigned DwarfWriter::SizeAndOffsetDie(DIE *Die, unsigned Offset) {
}
// Emit the DIE children if any.
if (Abbrev.getChildrenFlag() == DW_CHILDREN_yes) {
const std::vector<DIE *> &Children = Die->getChildren();
if (!Children.empty()) {
assert(Abbrev.getChildrenFlag() == DW_CHILDREN_yes &&
"Children flag not set");
for (unsigned j = 0, M = Children.size(); j < M; ++j) {
// FIXME - handle sibling offsets.
// FIXME - handle all DIE types.
Offset = SizeAndOffsetDie(Children[j], Offset);
Offset = SizeAndOffsetDie(Children[j], Offset, (j + 1) == M);
}
// End of children marker.
@@ -1690,8 +1837,7 @@ void DwarfWriter::SizeAndOffsets() {
sizeof(int16_t) + // DWARF version number
sizeof(int32_t) + // Offset Into Abbrev. Section
sizeof(int8_t); // Pointer Size (in bytes)
SizeAndOffsetDie(Unit->getDie(), Offset);
SizeAndOffsetDie(Unit->getDie(), Offset, (i + 1) == N);
}
}
}
@@ -1853,7 +1999,7 @@ void DwarfWriter::EmitDebugLines() const {
EmitInt8(0); EOL("Extended Op");
EmitInt8(4 + 1); EOL("Op size");
EmitInt8(DW_LNE_set_address); EOL("DW_LNE_set_address");
EmitReference("loc", i + 1); EOL("Location label");
EmitReference("loc", LineInfo->getLabelID()); EOL("Location label");
// If change of source, then switch to the new source.
if (Source != LineInfo->getSourceID()) {
@@ -1906,7 +2052,30 @@ void DwarfWriter::EmitDebugLines() const {
/// EmitDebugFrame - Emit visible names into a debug frame section.
///
void DwarfWriter::EmitDebugFrame() {
// FIXME - Should be per frame
// Start the dwarf pubnames section.
Asm->SwitchSection(DwarfFrameSection, 0);
EmitDifference("frame_common_end", 0,
"frame_common_begin", 0);
EOL("Length of Common Information Entry");
EmitLabel("frame_common_begin", 0);
EmitInt32(DW_CIE_ID); EOL("CIE Identifier Tag");
EmitInt8(DW_CIE_VERSION); EOL("CIE Version");
EmitString(""); EOL("CIE Augmentation");
EmitULEB128Bytes(1); EOL("CIE Code Alignment Factor");
// FIXME - needs to change based on stack direction.
EmitSLEB128Bytes(-sizeof(int32_t)); EOL("CIE Data Alignment Factor");
// FIXME - hard coded for PPC (LR).
EmitInt8(0x41); EOL("CIE RA Column Hardcoded (PPC LR)");
// FIXME - hard coded for PPC 0(SP).
EmitULEB128Bytes(DW_CFA_def_cfa); EOL("DW_CFA_def_cfa");
EmitULEB128Bytes(1); EOL("PPC Register SP");
EmitULEB128Bytes(0); EOL("PPC offset 0 as in 0(SP)");
EmitAlign(2);
EmitLabel("frame_common_end", 0);
O << "\n";
}
/// EmitDebugPubNames - Emit visible names into a debug pubnames section.
@@ -1962,7 +2131,7 @@ void DwarfWriter::EmitDebugStr() {
// Start the dwarf str section.
Asm->SwitchSection(DwarfStrSection, 0);
// For each of strings in teh string pool.
// For each of strings in the string pool.
for (unsigned StringID = 1, N = StringPool.size();
StringID <= N; ++StringID) {
// Emit a label for reference from debug information entries.
@@ -2057,9 +2226,9 @@ void DwarfWriter::ConstructCompileUnitDIEs() {
/// ConstructGlobalDIEs - Create DIEs for each of the externally visible global
/// variables.
void DwarfWriter::ConstructGlobalDIEs(Module &M) {
void DwarfWriter::ConstructGlobalDIEs() {
std::vector<GlobalVariableDesc *> GlobalVariables =
DebugInfo->getAnchoredDescriptors<GlobalVariableDesc>(M);
DebugInfo->getAnchoredDescriptors<GlobalVariableDesc>(*M);
for (unsigned i = 0, N = GlobalVariables.size(); i < N; ++i) {
GlobalVariableDesc *GVD = GlobalVariables[i];
@@ -2069,9 +2238,9 @@ void DwarfWriter::ConstructGlobalDIEs(Module &M) {
/// ConstructSubprogramDIEs - Create DIEs for each of the externally visible
/// subprograms.
void DwarfWriter::ConstructSubprogramDIEs(Module &M) {
void DwarfWriter::ConstructSubprogramDIEs() {
std::vector<SubprogramDesc *> Subprograms =
DebugInfo->getAnchoredDescriptors<SubprogramDesc>(M);
DebugInfo->getAnchoredDescriptors<SubprogramDesc>(*M);
for (unsigned i = 0, N = Subprograms.size(); i < N; ++i) {
SubprogramDesc *SPD = Subprograms[i];
@@ -2088,6 +2257,16 @@ bool DwarfWriter::ShouldEmitDwarf() {
// Make sure initial declarations are made.
if (!didInitial) {
EmitInitial();
// Create all the compile unit DIEs.
ConstructCompileUnitDIEs();
// Create DIEs for each of the externally visible global variables.
ConstructGlobalDIEs();
// Create DIEs for each of the externally visible subprograms.
ConstructSubprogramDIEs();
didInitial = true;
}
@@ -2102,8 +2281,11 @@ bool DwarfWriter::ShouldEmitDwarf() {
DwarfWriter::DwarfWriter(std::ostream &OS, AsmPrinter *A)
: O(OS)
, Asm(A)
, M(NULL)
, MF(NULL)
, DebugInfo(NULL)
, didInitial(false)
, SubprogramCount(0)
, CompileUnits()
, Abbreviations()
, StringPool()
@@ -2137,14 +2319,16 @@ DwarfWriter::~DwarfWriter() {
/// BeginModule - Emit all Dwarf sections that should come prior to the content.
///
void DwarfWriter::BeginModule(Module &M) {
void DwarfWriter::BeginModule(Module *M) {
this->M = M;
if (!ShouldEmitDwarf()) return;
EOL("Dwarf Begin Module");
}
/// EndModule - Emit all Dwarf sections that should come after the content.
///
void DwarfWriter::EndModule(Module &M) {
void DwarfWriter::EndModule() {
if (!ShouldEmitDwarf()) return;
EOL("Dwarf End Module");
@@ -2154,15 +2338,6 @@ void DwarfWriter::EndModule(Module &M) {
Asm->SwitchSection(DataSection, 0);
EmitLabel("data_end", 0);
// Create all the compile unit DIEs.
ConstructCompileUnitDIEs();
// Create DIEs for each of the externally visible global variables.
ConstructGlobalDIEs(M);
// Create DIEs for each of the externally visible subprograms.
ConstructSubprogramDIEs(M);
// Compute DIE offsets and sizes.
SizeAndOffsets();
@@ -2176,7 +2351,7 @@ void DwarfWriter::EndModule(Module &M) {
EmitDebugLines();
// Emit info into a debug frame section.
// EmitDebugFrame();
EmitDebugFrame();
// Emit info into a debug pubnames section.
EmitDebugPubNames();
@@ -2199,14 +2374,29 @@ void DwarfWriter::EndModule(Module &M) {
/// BeginFunction - Gather pre-function debug information.
///
void DwarfWriter::BeginFunction(MachineFunction &MF) {
void DwarfWriter::BeginFunction(MachineFunction *MF) {
this->MF = MF;
if (!ShouldEmitDwarf()) return;
EOL("Dwarf Begin Function");
// Define begin label for subprogram.
Asm->SwitchSection(TextSection, 0);
EmitLabel("func_begin", ++SubprogramCount);
}
/// EndFunction - Gather and emit post-function debug information.
///
void DwarfWriter::EndFunction(MachineFunction &MF) {
void DwarfWriter::EndFunction() {
if (!ShouldEmitDwarf()) return;
EOL("Dwarf End Function");
// Define end label for subprogram.
Asm->SwitchSection(TextSection, 0);
EmitLabel("func_end", SubprogramCount);
// Construct scopes for subprogram.
ConstructRootScope(DebugInfo->getRootScope());
DebugInfo->ClearScopes();
}