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Code Restructuring. No functionality change.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73481 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Sanjiv Gupta 2009-06-16 09:45:18 +00:00
parent 8aa207ee30
commit bde7942072
4 changed files with 353 additions and 189 deletions
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39
lib/Target/PIC16/PIC16AsmPrinter.cpp
View File

@ -48,27 +48,10 @@ bool PIC16AsmPrinter::runOnMachineFunction(MachineFunction &MF) {
const Function *F = MF.getFunction();
CurrentFnName = Mang->getValueName(F);
// Iterate over the first basic block instructions to find if it has a
// DebugLoc. If so emit .file directive. Instructions such as movlw do not
// have valid DebugLoc, so need to iterate over instructions.
MachineFunction::const_iterator I = MF.begin();
for (MachineBasicBlock::const_iterator MBBI = I->begin(), E = I->end();
MBBI != E; MBBI++) {
const DebugLoc DLoc = MBBI->getDebugLoc();
if (!DLoc.isUnknown()) {
GlobalVariable *CU = MF.getDebugLocTuple(DLoc).CompileUnit;
unsigned line = MF.getDebugLocTuple(DLoc).Line;
DbgInfo.EmitFileDirective(CU);
DbgInfo.SetFunctBeginLine(line);
break;
}
}
// Emit the function frame (args and temps).
EmitFunctionFrame(MF);
// Emit function begin debug directive.
DbgInfo.EmitFunctBeginDI(F);
DbgInfo.BeginFunction(MF);
// Emit the autos section of function.
EmitAutos(CurrentFnName);
@ -89,9 +72,7 @@ bool PIC16AsmPrinter::runOnMachineFunction(MachineFunction &MF) {
// Emit function start label.
O << CurrentFnName << ":\n";
// For emitting line directives, we need to keep track of the current
// source line. When it changes then only emit the line directive.
unsigned CurLine = 0;
DebugLoc CurDL;
O << "\n";
// Print out code for the function.
for (MachineFunction::const_iterator I = MF.begin(), E = MF.end();
@ -109,12 +90,9 @@ bool PIC16AsmPrinter::runOnMachineFunction(MachineFunction &MF) {
// Emit the line directive if source line changed.
const DebugLoc DL = II->getDebugLoc();
if (!DL.isUnknown()) {
unsigned line = MF.getDebugLocTuple(DL).Line;
if (line != CurLine) {
O << "\t.line " << line << "\n";
CurLine = line;
}
if (!DL.isUnknown() && DL != CurDL) {
DbgInfo.ChangeDebugLoc(MF, DL);
CurDL = DL;
}
// Print the assembly for the instruction.
@ -123,7 +101,7 @@ bool PIC16AsmPrinter::runOnMachineFunction(MachineFunction &MF) {
}
// Emit function end debug directives.
DbgInfo.EmitFunctEndDI(F, CurLine);
DbgInfo.EndFunction(MF);
return false; // we didn't modify anything.
}
@ -226,7 +204,7 @@ bool PIC16AsmPrinter::doInitialization (Module &M) {
I->setSection(TAI->SectionForGlobal(I)->getName());
}
DbgInfo.Init(M);
DbgInfo.BeginModule(M);
EmitFunctionDecls(M);
EmitUndefinedVars(M);
EmitDefinedVars(M);
@ -313,8 +291,7 @@ void PIC16AsmPrinter::EmitRomData (Module &M)
bool PIC16AsmPrinter::doFinalization(Module &M) {
printLibcallDecls();
EmitRemainingAutos();
DbgInfo.EmitVarDebugInfo(M);
DbgInfo.EmitEOF();
DbgInfo.EndModule(M);
O << "\n\t" << "END\n";
bool Result = AsmPrinter::doFinalization(M);
return Result;

2
lib/Target/PIC16/PIC16AsmPrinter.h
View File

@ -32,7 +32,7 @@ namespace llvm {
explicit PIC16AsmPrinter(raw_ostream &O, PIC16TargetMachine &TM,
const TargetAsmInfo *T, CodeGenOpt::Level OL,
bool V)
: AsmPrinter(O, TM, T, OL, V), DbgInfo(O,T) {
: AsmPrinter(O, TM, T, OL, V), DbgInfo(O, T) {
PTLI = TM.getTargetLowering();
PTAI = static_cast<const PIC16TargetAsmInfo *> (T);
}

448
lib/Target/PIC16/PIC16DebugInfo.cpp
View File

@ -14,91 +14,23 @@
#include "PIC16.h"
#include "PIC16DebugInfo.h"
#include "llvm/GlobalVariable.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/DebugLoc.h"
#include "llvm/Support/raw_ostream.h"
using namespace llvm;
void PIC16DbgInfo::PopulateDebugInfo(DIType Ty, unsigned short &TypeNo,
bool &HasAux, int Aux[],
std::string &TypeName) {
if (Ty.isBasicType(Ty.getTag())) {
std::string Name = "";
Ty.getName(Name);
unsigned short BaseTy = GetTypeDebugNumber(Name);
TypeNo = TypeNo << PIC16Dbg::S_BASIC;
TypeNo = TypeNo | (0xffff & BaseTy);
}
else if (Ty.isDerivedType(Ty.getTag())) {
switch(Ty.getTag())
{
case dwarf::DW_TAG_pointer_type:
TypeNo = TypeNo << PIC16Dbg::S_DERIVED;
TypeNo = TypeNo | PIC16Dbg::DT_PTR;
break;
default:
TypeNo = TypeNo << PIC16Dbg::S_DERIVED;
}
DIType BaseType = DIDerivedType(Ty.getGV()).getTypeDerivedFrom();
PopulateDebugInfo(BaseType, TypeNo, HasAux, Aux, TypeName);
}
else if (Ty.isCompositeType(Ty.getTag())) {
switch (Ty.getTag()) {
case dwarf::DW_TAG_array_type: {
DICompositeType CTy = DICompositeType(Ty.getGV());
DIArray Elements = CTy.getTypeArray();
unsigned short size = 1;
unsigned short Dimension[4]={0,0,0,0};
for (unsigned i = 0, N = Elements.getNumElements(); i < N; ++i) {
DIDescriptor Element = Elements.getElement(i);
if (Element.getTag() == dwarf::DW_TAG_subrange_type) {
TypeNo = TypeNo << PIC16Dbg::S_DERIVED;
TypeNo = TypeNo | PIC16Dbg::DT_ARY;
DISubrange SubRange = DISubrange(Element.getGV());
Dimension[i] = SubRange.getHi() - SubRange.getLo() + 1;
// Each dimension is represented by 2 bytes starting at byte 9.
Aux[8+i*2+0] = Dimension[i];
Aux[8+i*2+1] = Dimension[i] >> 8;
size = size * Dimension[i];
}
}
HasAux = true;
// In auxillary entry for array, 7th and 8th byte represent array size.
Aux[6] = size & 0xff;
Aux[7] = size >> 8;
DIType BaseType = CTy.getTypeDerivedFrom();
PopulateDebugInfo(BaseType, TypeNo, HasAux, Aux, TypeName);
break;
}
case dwarf:: DW_TAG_union_type:
case dwarf::DW_TAG_structure_type: {
DICompositeType CTy = DICompositeType(Ty.getGV());
TypeNo = TypeNo << PIC16Dbg::S_BASIC;
if (Ty.getTag() == dwarf::DW_TAG_structure_type)
TypeNo = TypeNo | PIC16Dbg::T_STRUCT;
else
TypeNo = TypeNo | PIC16Dbg::T_UNION;
CTy.getName(TypeName);
// UniqueSuffix is .number where number is obtained from
// llvm.dbg.composite<number>.
std::string UniqueSuffix = "." + Ty.getGV()->getName().substr(18);
TypeName += UniqueSuffix;
unsigned short size = CTy.getSizeInBits()/8;
// 7th and 8th byte represent size.
HasAux = true;
Aux[6] = size & 0xff;
Aux[7] = size >> 8;
break;
}
case dwarf::DW_TAG_enumeration_type: {
TypeNo = TypeNo << PIC16Dbg::S_BASIC;
TypeNo = TypeNo | PIC16Dbg::T_ENUM;
break;
}
default:
TypeNo = TypeNo << PIC16Dbg::S_DERIVED;
}
}
/// PopulateDebugInfo - Populate the TypeNo, Aux[] and TagName from Ty.
///
void PIC16DbgInfo::PopulateDebugInfo (DIType Ty, unsigned short &TypeNo,
bool &HasAux, int Aux[],
std::string &TagName) {
if (Ty.isBasicType(Ty.getTag()))
PopulateBasicTypeInfo (Ty, TypeNo);
else if (Ty.isDerivedType(Ty.getTag()))
PopulateDerivedTypeInfo (Ty, TypeNo, HasAux, Aux, TagName);
else if (Ty.isCompositeType(Ty.getTag()))
PopulateCompositeTypeInfo (Ty, TypeNo, HasAux, Aux, TagName);
else {
TypeNo = PIC16Dbg::T_NULL;
HasAux = false;
@ -106,7 +38,127 @@ void PIC16DbgInfo::PopulateDebugInfo(DIType Ty, unsigned short &TypeNo,
return;
}
/// PopulateBasicTypeInfo- Populate TypeNo for basic type from Ty.
///
void PIC16DbgInfo::PopulateBasicTypeInfo (DIType Ty, unsigned short &TypeNo) {
std::string Name = "";
Ty.getName(Name);
unsigned short BaseTy = GetTypeDebugNumber(Name);
TypeNo = TypeNo << PIC16Dbg::S_BASIC;
TypeNo = TypeNo | (0xffff & BaseTy);
}
/// PopulateDerivedTypeInfo - Populate TypeNo, Aux[], TagName for derived type
/// from Ty. Derived types are mostly pointers.
///
void PIC16DbgInfo::PopulateDerivedTypeInfo (DIType Ty, unsigned short &TypeNo,
bool &HasAux, int Aux[],
std::string &TagName) {
switch(Ty.getTag())
{
case dwarf::DW_TAG_pointer_type:
TypeNo = TypeNo << PIC16Dbg::S_DERIVED;
TypeNo = TypeNo | PIC16Dbg::DT_PTR;
break;
default:
TypeNo = TypeNo << PIC16Dbg::S_DERIVED;
}
// We also need to encode the the information about the base type of
// pointer in TypeNo.
DIType BaseType = DIDerivedType(Ty.getGV()).getTypeDerivedFrom();
PopulateDebugInfo(BaseType, TypeNo, HasAux, Aux, TagName);
}
/// PopulateArrayTypeInfo - Populate TypeNo, Aux[] for array from Ty.
void PIC16DbgInfo::PopulateArrayTypeInfo (DIType Ty, unsigned short &TypeNo,
bool &HasAux, int Aux[],
std::string &TagName) {
DICompositeType CTy = DICompositeType(Ty.getGV());
DIArray Elements = CTy.getTypeArray();
unsigned short size = 1;
unsigned short Dimension[4]={0,0,0,0};
for (unsigned i = 0, N = Elements.getNumElements(); i < N; ++i) {
DIDescriptor Element = Elements.getElement(i);
if (Element.getTag() == dwarf::DW_TAG_subrange_type) {
TypeNo = TypeNo << PIC16Dbg::S_DERIVED;
TypeNo = TypeNo | PIC16Dbg::DT_ARY;
DISubrange SubRange = DISubrange(Element.getGV());
Dimension[i] = SubRange.getHi() - SubRange.getLo() + 1;
// Each dimension is represented by 2 bytes starting at byte 9.
Aux[8+i*2+0] = Dimension[i];
Aux[8+i*2+1] = Dimension[i] >> 8;
size = size * Dimension[i];
}
}
HasAux = true;
// In auxillary entry for array, 7th and 8th byte represent array size.
Aux[6] = size & 0xff;
Aux[7] = size >> 8;
DIType BaseType = CTy.getTypeDerivedFrom();
PopulateDebugInfo(BaseType, TypeNo, HasAux, Aux, TagName);
}
/// PopulateStructOrUnionTypeInfo - Populate TypeNo, Aux[] , TagName for
/// structure or union.
///
void PIC16DbgInfo::PopulateStructOrUnionTypeInfo (DIType Ty,
unsigned short &TypeNo,
bool &HasAux, int Aux[],
std::string &TagName) {
DICompositeType CTy = DICompositeType(Ty.getGV());
TypeNo = TypeNo << PIC16Dbg::S_BASIC;
if (Ty.getTag() == dwarf::DW_TAG_structure_type)
TypeNo = TypeNo | PIC16Dbg::T_STRUCT;
else
TypeNo = TypeNo | PIC16Dbg::T_UNION;
CTy.getName(TagName);
// UniqueSuffix is .number where number is obtained from
// llvm.dbg.composite<number>.
std::string UniqueSuffix = "." + Ty.getGV()->getName().substr(18);
TagName += UniqueSuffix;
unsigned short size = CTy.getSizeInBits()/8;
// 7th and 8th byte represent size.
HasAux = true;
Aux[6] = size & 0xff;
Aux[7] = size >> 8;
}
/// PopulateEnumTypeInfo - Populate TypeNo for enum from Ty.
void PIC16DbgInfo::PopulateEnumTypeInfo (DIType Ty, unsigned short &TypeNo) {
TypeNo = TypeNo << PIC16Dbg::S_BASIC;
TypeNo = TypeNo | PIC16Dbg::T_ENUM;
}
/// PopulateCompositeTypeInfo - Populate TypeNo, Aux[] and TagName for
/// composite types from Ty.
///
void PIC16DbgInfo::PopulateCompositeTypeInfo (DIType Ty, unsigned short &TypeNo,
bool &HasAux, int Aux[],
std::string &TagName) {
switch (Ty.getTag()) {
case dwarf::DW_TAG_array_type: {
PopulateArrayTypeInfo (Ty, TypeNo, HasAux, Aux, TagName);
break;
}
case dwarf:: DW_TAG_union_type:
case dwarf::DW_TAG_structure_type: {
PopulateStructOrUnionTypeInfo (Ty, TypeNo, HasAux, Aux, TagName);
break;
}
case dwarf::DW_TAG_enumeration_type: {
PopulateEnumTypeInfo (Ty, TypeNo);
break;
}
default:
TypeNo = TypeNo << PIC16Dbg::S_DERIVED;
}
}
/// GetTypeDebugNumber - Get debug type number for given type.
///
unsigned PIC16DbgInfo::GetTypeDebugNumber(std::string &type) {
if (type == "char")
return PIC16Dbg::T_CHAR;
@ -127,8 +179,10 @@ unsigned PIC16DbgInfo::GetTypeDebugNumber(std::string &type) {
else
return 0;
}
short PIC16DbgInfo::getClass(DIGlobalVariable DIGV) {
/// GetStorageClass - Get storage class for give debug variable.
///
short PIC16DbgInfo::getStorageClass(DIGlobalVariable DIGV) {
short ClassNo;
if (PAN::isLocalName(DIGV.getGlobal()->getName())) {
// Generating C_AUTO here fails due to error in linker. Change it once
@ -142,12 +196,126 @@ short PIC16DbgInfo::getClass(DIGlobalVariable DIGV) {
return ClassNo;
}
void PIC16DbgInfo::Init(Module &M) {
// Do all debug related initializations here.
EmitFileDirective(M);
/// BeginModule - Emit necessary debug info to start a Module and do other
/// required initializations.
void PIC16DbgInfo::BeginModule(Module &M) {
// Emit file directive for module.
GlobalVariable *CU = M.getNamedGlobal("llvm.dbg.compile_unit");
if (CU) {
EmitDebugDirectives = true;
SwitchToCU(CU);
}
// Emit debug info for decls of composite types.
EmitCompositeTypeDecls(M);
}
/// Helper to find first valid debug loc for a function.
///
static const DebugLoc GetDebugLocForFunction(const MachineFunction &MF) {
DebugLoc DL;
for (MachineFunction::const_iterator I = MF.begin(), E = MF.end();
I != E; ++I) {
for (MachineBasicBlock::const_iterator II = I->begin(), E = I->end();
II != E; ++II) {
DL = II->getDebugLoc();
if (!DL.isUnknown())
return DL;
}
}
return DL;
}
/// BeginFunction - Emit necessary debug info to start a function.
///
void PIC16DbgInfo::BeginFunction(const MachineFunction &MF) {
if (! EmitDebugDirectives) return;
// Retreive the first valid debug Loc and process it.
const DebugLoc &DL = GetDebugLocForFunction(MF);
ChangeDebugLoc(MF, DL, true);
EmitFunctBeginDI(MF.getFunction());
// Set current line to 0 so that.line directive is genearted after .bf.
CurLine = 0;
}
/// ChangeDebugLoc - Take necessary steps when DebugLoc changes.
/// CurFile and CurLine may change as a result of this.
///
void PIC16DbgInfo::ChangeDebugLoc(const MachineFunction &MF,
const DebugLoc &DL, bool IsInBeginFunction) {
if (! EmitDebugDirectives) return;
assert (! DL.isUnknown() && "can't change to invalid debug loc");
GlobalVariable *CU = MF.getDebugLocTuple(DL).CompileUnit;
unsigned line = MF.getDebugLocTuple(DL).Line;
SwitchToCU(CU);
SwitchToLine(line, IsInBeginFunction);
}
/// SwitchToLine - Emit line directive for a new line.
///
void PIC16DbgInfo::SwitchToLine(unsigned Line, bool IsInBeginFunction) {
if (CurLine == Line) return;
if (!IsInBeginFunction) O << "\n\t.line " << Line << "\n";
CurLine = Line;
}
/// EndFunction - Emit .ef for end of function.
///
void PIC16DbgInfo::EndFunction(const MachineFunction &MF) {
if (! EmitDebugDirectives) return;
EmitFunctEndDI(MF.getFunction(), CurLine);
}
/// EndModule - Emit .eof for end of module.
///
void PIC16DbgInfo::EndModule(Module &M) {
if (! EmitDebugDirectives) return;
EmitVarDebugInfo(M);
if (CurFile != "") O << "\n\t.eof";
}
/// EmitCompositeTypeElements - Emit debug information for members of a
/// composite type.
///
void PIC16DbgInfo::EmitCompositeTypeElements (DICompositeType CTy,
std::string UniqueSuffix) {
unsigned long Value = 0;
DIArray Elements = CTy.getTypeArray();
for (unsigned i = 0, N = Elements.getNumElements(); i < N; i++) {
DIDescriptor Element = Elements.getElement(i);
unsigned short TypeNo = 0;
bool HasAux = false;
int ElementAux[PIC16Dbg::AuxSize] = { 0 };
std::string TagName = "";
std::string ElementName;
GlobalVariable *GV = Element.getGV();
DIDerivedType DITy(GV);
DITy.getName(ElementName);
unsigned short ElementSize = DITy.getSizeInBits()/8;
// Get mangleddd name for this structure/union element.
std::string MangMemName = ElementName + UniqueSuffix;
PopulateDebugInfo(DITy, TypeNo, HasAux, ElementAux, TagName);
short Class;
if( CTy.getTag() == dwarf::DW_TAG_union_type)
Class = PIC16Dbg::C_MOU;
else if (CTy.getTag() == dwarf::DW_TAG_structure_type)
Class = PIC16Dbg::C_MOS;
EmitSymbol(MangMemName, Class, TypeNo, Value);
if (CTy.getTag() == dwarf::DW_TAG_structure_type)
Value += ElementSize;
if (HasAux)
EmitAuxEntry(MangMemName, ElementAux, PIC16Dbg::AuxSize, TagName);
}
}
/// EmitCompositeTypeDecls - Emit composite type declarations like structure
/// and union declarations.
///
void PIC16DbgInfo::EmitCompositeTypeDecls(Module &M) {
for(iplist<GlobalVariable>::iterator I = M.getGlobalList().begin(),
E = M.getGlobalList().end(); I != E; I++) {
@ -178,33 +346,10 @@ void PIC16DbgInfo::EmitCompositeTypeDecls(Module &M) {
// Emit auxiliary debug information for structure/union tag.
EmitAuxEntry(MangledCTyName, Aux, PIC16Dbg::AuxSize);
unsigned long Value = 0;
DIArray Elements = CTy.getTypeArray();
for (unsigned i = 0, N = Elements.getNumElements(); i < N; i++) {
DIDescriptor Element = Elements.getElement(i);
unsigned short TypeNo = 0;
bool HasAux = false;
int ElementAux[PIC16Dbg::AuxSize] = { 0 };
std::string TypeName = "";
std::string ElementName;
GlobalVariable *GV = Element.getGV();
DIDerivedType DITy(GV);
DITy.getName(ElementName);
unsigned short ElementSize = DITy.getSizeInBits()/8;
// Get mangleddd name for this structure/union element.
std::string MangMemName = ElementName + UniqueSuffix;
PopulateDebugInfo(DITy, TypeNo, HasAux, ElementAux, TypeName);
short Class;
if( CTy.getTag() == dwarf::DW_TAG_union_type)
Class = PIC16Dbg::C_MOU;
else if (CTy.getTag() == dwarf::DW_TAG_structure_type)
Class = PIC16Dbg::C_MOS;
EmitSymbol(MangMemName, Class, TypeNo, Value);
if (CTy.getTag() == dwarf::DW_TAG_structure_type)
Value += ElementSize;
if (HasAux)
EmitAuxEntry(MangMemName, ElementAux, PIC16Dbg::AuxSize, TypeName);
}
// Emit members.
EmitCompositeTypeElements (CTy, UniqueSuffix);
// Emit mangled Symbol for end of structure/union.
std::string EOSSymbol = ".eos" + UniqueSuffix;
EmitSymbol(EOSSymbol, PIC16Dbg::C_EOS);
@ -214,6 +359,8 @@ void PIC16DbgInfo::EmitCompositeTypeDecls(Module &M) {
}
}
/// EmitFunctBeginDI - Emit .bf for function.
///
void PIC16DbgInfo::EmitFunctBeginDI(const Function *F) {
std::string FunctName = F->getName();
if (EmitDebugDirectives) {
@ -221,16 +368,20 @@ void PIC16DbgInfo::EmitFunctBeginDI(const Function *F) {
std::string BlockBeginSym = ".bb." + FunctName;
int BFAux[PIC16Dbg::AuxSize] = {0};
BFAux[4] = FunctBeginLine;
BFAux[5] = FunctBeginLine >> 8;
BFAux[4] = CurLine;
BFAux[5] = CurLine >> 8;
// Emit debug directives for beginning of function.
EmitSymbol(FunctBeginSym, PIC16Dbg::C_FCN);
EmitAuxEntry(FunctBeginSym, BFAux, PIC16Dbg::AuxSize);
EmitSymbol(BlockBeginSym, PIC16Dbg::C_BLOCK);
EmitAuxEntry(BlockBeginSym, BFAux, PIC16Dbg::AuxSize);
}
}
/// EmitFunctEndDI - Emit .ef for function end.
///
void PIC16DbgInfo::EmitFunctEndDI(const Function *F, unsigned Line) {
std::string FunctName = F->getName();
if (EmitDebugDirectives) {
@ -241,8 +392,8 @@ void PIC16DbgInfo::EmitFunctEndDI(const Function *F, unsigned Line) {
EmitSymbol(BlockEndSym, PIC16Dbg::C_BLOCK);
int EFAux[PIC16Dbg::AuxSize] = {0};
// 5th and 6th byte stand for line number.
EFAux[4] = Line;
EFAux[5] = Line >> 8;
EFAux[4] = CurLine;
EFAux[5] = CurLine >> 8;
EmitAuxEntry(BlockEndSym, EFAux, PIC16Dbg::AuxSize);
EmitSymbol(FunctEndSym, PIC16Dbg::C_FCN);
EmitAuxEntry(FunctEndSym, EFAux, PIC16Dbg::AuxSize);
@ -251,15 +402,18 @@ void PIC16DbgInfo::EmitFunctEndDI(const Function *F, unsigned Line) {
/// EmitAuxEntry - Emit Auxiliary debug information.
///
void PIC16DbgInfo::EmitAuxEntry(const std::string VarName, int Aux[], int num,
std::string tag) {
void PIC16DbgInfo::EmitAuxEntry(const std::string VarName, int Aux[], int Num,
std::string TagName) {
O << "\n\t.dim " << VarName << ", 1" ;
if (tag != "")
O << ", " << tag;
for (int i = 0; i<num; i++)
// TagName is emitted in case of structure/union objects.
if (TagName != "")
O << ", " << TagName;
for (int i = 0; i<Num; i++)
O << "," << Aux[i];
}
/// EmitSymbol - Emit .def for a symbol. Value is offset for the member.
///
void PIC16DbgInfo::EmitSymbol(std::string Name, short Class, unsigned short
Type, unsigned long Value) {
O << "\n\t" << ".def "<< Name << ", type = " << Type << ", class = "
@ -268,6 +422,8 @@ void PIC16DbgInfo::EmitSymbol(std::string Name, short Class, unsigned short
O << ", value = " << Value;
}
/// EmitVarDebugInfo - Emit debug information for all variables.
///
void PIC16DbgInfo::EmitVarDebugInfo(Module &M) {
GlobalVariable *Root = M.getGlobalVariable("llvm.dbg.global_variables");
if (!Root)
@ -283,47 +439,45 @@ void PIC16DbgInfo::EmitVarDebugInfo(Module &M) {
unsigned short TypeNo = 0;
bool HasAux = false;
int Aux[PIC16Dbg::AuxSize] = { 0 };
std::string TypeName = "";
std::string TagName = "";
std::string VarName = TAI->getGlobalPrefix()+DIGV.getGlobal()->getName();
PopulateDebugInfo(Ty, TypeNo, HasAux, Aux, TypeName);
PopulateDebugInfo(Ty, TypeNo, HasAux, Aux, TagName);
// Emit debug info only if type information is availaible.
if (TypeNo != PIC16Dbg::T_NULL) {
O << "\n\t.type " << VarName << ", " << TypeNo;
short ClassNo = getClass(DIGV);
short ClassNo = getStorageClass(DIGV);
O << "\n\t.class " << VarName << ", " << ClassNo;
if (HasAux)
EmitAuxEntry(VarName, Aux, PIC16Dbg::AuxSize, TypeName);
EmitAuxEntry(VarName, Aux, PIC16Dbg::AuxSize, TagName);
}
}
}
O << "\n";
}
void PIC16DbgInfo::EmitFileDirective(Module &M) {
GlobalVariable *CU = M.getNamedGlobal("llvm.dbg.compile_unit");
if (CU) {
EmitDebugDirectives = true;
EmitFileDirective(CU, false);
}
}
void PIC16DbgInfo::EmitFileDirective(GlobalVariable *CU, bool EmitEof) {
std::string Dir, FN;
DICompileUnit DIUnit(CU);
std::string File = DIUnit.getDirectory(Dir) + "/" + DIUnit.getFilename(FN);
if ( File != CurFile ) {
if (EmitEof)
EmitEOF();
O << "\n\t.file\t\"" << File << "\"\n" ;
CurFile = File;
}
/// SwitchToCU - Switch to a new compilation unit.
///
void PIC16DbgInfo::SwitchToCU(GlobalVariable *CU) {
// Get the file path from CU.
DICompileUnit cu(CU);
std::string DirName, FileName;
std::string FilePath = cu.getDirectory(DirName) + "/" +
cu.getFilename(FileName);
// Nothing to do if source file is still same.
if ( FilePath == CurFile ) return;
// Else, close the current one and start a new.
if (CurFile != "") O << "\n\t.eof";
O << "\n\t.file\t\"" << FilePath << "\"\n" ;
CurFile = FilePath;
CurLine = 0;
}
/// EmitEOF - Emit .eof for end of file.
///
void PIC16DbgInfo::EmitEOF() {
if (CurFile != "")
O << "\n\t.EOF";
}
void PIC16DbgInfo::SetFunctBeginLine(unsigned line) {
FunctBeginLine = line;
}

53
lib/Target/PIC16/PIC16DebugInfo.h
View File

@ -20,6 +20,8 @@
#include <map>
namespace llvm {
class MachineFunction;
class DebugLoc;
namespace PIC16Dbg {
enum VarType {
T_NULL,
@ -94,33 +96,64 @@ namespace llvm {
raw_ostream &O;
const TargetAsmInfo *TAI;
std::string CurFile;
unsigned CurLine;
// EmitDebugDirectives is set if debug information is available. Default
// value for it is false.
bool EmitDebugDirectives;
unsigned FunctBeginLine;
public:
PIC16DbgInfo(raw_ostream &o, const TargetAsmInfo *T) : O(o), TAI(T) {
CurFile = "";
CurFile = "";
CurLine = 0;
EmitDebugDirectives = false;
}
void PopulateDebugInfo(DIType Ty, unsigned short &TypeNo, bool &HasAux,
void BeginModule (Module &M);
void BeginFunction (const MachineFunction &MF);
void ChangeDebugLoc (const MachineFunction &MF, const DebugLoc &DL,
bool IsInBeginFunction = false);
void EndFunction (const MachineFunction &MF);
void EndModule (Module &M);
private:
void SwitchToCU (GlobalVariable *CU);
void SwitchToLine (unsigned Line, bool IsInBeginFunction = false);
void PopulateDebugInfo (DIType Ty, unsigned short &TypeNo, bool &HasAux,
int Aux[], std::string &TypeName);
unsigned GetTypeDebugNumber(std::string &type);
short getClass(DIGlobalVariable DIGV);
void PopulateBasicTypeInfo (DIType Ty, unsigned short &TypeNo);
void PopulateDerivedTypeInfo (DIType Ty, unsigned short &TypeNo,
bool &HasAux, int Aux[],
std::string &TypeName);
void PopulateCompositeTypeInfo (DIType Ty, unsigned short &TypeNo,
bool &HasAux, int Aux[],
std::string &TypeName);
void PopulateArrayTypeInfo (DIType Ty, unsigned short &TypeNo,
bool &HasAux, int Aux[],
std::string &TypeName);
void PopulateStructOrUnionTypeInfo (DIType Ty, unsigned short &TypeNo,
bool &HasAux, int Aux[],
std::string &TypeName);
void PopulateEnumTypeInfo (DIType Ty, unsigned short &TypeNo);
unsigned GetTypeDebugNumber(std::string &Type);
short getStorageClass(DIGlobalVariable DIGV);
void EmitFunctBeginDI(const Function *F);
void Init(Module &M);
void EmitCompositeTypeDecls(Module &M);
void EmitCompositeTypeElements (DICompositeType CTy,
std::string UniqueSuffix);
void EmitFunctEndDI(const Function *F, unsigned Line);
void EmitAuxEntry(const std::string VarName, int Aux[],
int num = PIC16Dbg::AuxSize, std::string tag = "");
int num = PIC16Dbg::AuxSize, std::string TagName = "");
inline void EmitSymbol(std::string Name, short Class,
unsigned short Type = PIC16Dbg::T_NULL,
unsigned long Value = 0);
void EmitVarDebugInfo(Module &M);
void EmitFileDirective(Module &M);
void EmitFileDirective(GlobalVariable *CU, bool EmitEof = true);
void EmitEOF();
void SetFunctBeginLine(unsigned line);
};
} // end namespace llvm;
#endif