+
//===-- PIC16DebugInfo.cpp - Implementation for PIC16 Debug Information ======//
//
// The LLVM Compiler Infrastructure
//===----------------------------------------------------------------------===//
#include "PIC16.h"
+#include "PIC16ABINames.h"
#include "PIC16DebugInfo.h"
#include "llvm/GlobalVariable.h"
#include "llvm/CodeGen/MachineFunction.h"
+#include "llvm/MC/MCAsmInfo.h"
+#include "llvm/MC/MCStreamer.h"
#include "llvm/Support/DebugLoc.h"
-#include "llvm/Support/raw_ostream.h"
-
+#include "llvm/ADT/SmallString.h"
+#include "llvm/ADT/StringExtras.h"
using namespace llvm;
/// 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()))
+ if (Ty.isBasicType())
PopulateBasicTypeInfo (Ty, TypeNo);
- else if (Ty.isDerivedType(Ty.getTag()))
- PopulateDerivedTypeInfo (Ty, TypeNo, HasAux, Aux, TagName);
- else if (Ty.isCompositeType(Ty.getTag()))
+ else if (Ty.isCompositeType())
PopulateCompositeTypeInfo (Ty, TypeNo, HasAux, Aux, TagName);
+ else if (Ty.isDerivedType())
+ PopulateDerivedTypeInfo (Ty, TypeNo, HasAux, Aux, TagName);
else {
TypeNo = PIC16Dbg::T_NULL;
HasAux = false;
/// PopulateBasicTypeInfo- Populate TypeNo for basic type from Ty.
///
void PIC16DbgInfo::PopulateBasicTypeInfo (DIType Ty, unsigned short &TypeNo) {
- std::string Name = "";
- Ty.getName(Name);
+ std::string Name = Ty.getName();
unsigned short BaseTy = GetTypeDebugNumber(Name);
TypeNo = TypeNo << PIC16Dbg::S_BASIC;
TypeNo = TypeNo | (0xffff & BaseTy);
TypeNo = TypeNo << PIC16Dbg::S_DERIVED;
}
- // We also need to encode the the information about the base type of
+ // We also need to encode the information about the base type of
// pointer in TypeNo.
- DIType BaseType = DIDerivedType(Ty.getGV()).getTypeDerivedFrom();
+ DIType BaseType = DIDerivedType(Ty).getTypeDerivedFrom();
PopulateDebugInfo(BaseType, TypeNo, HasAux, Aux, TagName);
}
bool &HasAux, int Aux[],
std::string &TagName) {
- DICompositeType CTy = DICompositeType(Ty.getGV());
+ DICompositeType CTy = DICompositeType(Ty);
DIArray Elements = CTy.getTypeArray();
unsigned short size = 1;
unsigned short Dimension[4]={0,0,0,0};
if (Element.getTag() == dwarf::DW_TAG_subrange_type) {
TypeNo = TypeNo << PIC16Dbg::S_DERIVED;
TypeNo = TypeNo | PIC16Dbg::DT_ARY;
- DISubrange SubRange = DISubrange(Element.getGV());
+ DISubrange SubRange = DISubrange(Element);
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];
unsigned short &TypeNo,
bool &HasAux, int Aux[],
std::string &TagName) {
- DICompositeType CTy = DICompositeType(Ty.getGV());
+ DICompositeType CTy = DICompositeType(Ty);
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);
+ TagName = CTy.getName();
// UniqueSuffix is .number where number is obtained from
// llvm.dbg.composite<number>.
- std::string UniqueSuffix = "." + Ty.getGV()->getName().substr(18);
+ // FIXME: This will break when composite type is not represented by
+ // llvm.dbg.composite* global variable. Since we need to revisit
+ // PIC16DebugInfo implementation anyways after the MDNodes based
+ // framework is done, let us continue with the way it is.
+ std::string UniqueSuffix = "." + Ty->getNameStr().substr(18);
TagName += UniqueSuffix;
unsigned short size = CTy.getSizeInBits()/8;
// 7th and 8th byte represent size.
///
short PIC16DbgInfo::getStorageClass(DIGlobalVariable DIGV) {
short ClassNo;
- if (PAN::isLocalName(DIGV.getGlobal()->getName())) {
+ if (PAN::isLocalName(DIGV.getName())) {
// Generating C_AUTO here fails due to error in linker. Change it once
// linker is fixed.
ClassNo = PIC16Dbg::C_STAT;
/// required initializations.
void PIC16DbgInfo::BeginModule(Module &M) {
// Emit file directive for module.
- GlobalVariable *CU = M.getNamedGlobal("llvm.dbg.compile_unit");
- if (CU) {
+ DebugInfoFinder DbgFinder;
+ DbgFinder.processModule(M);
+ if (DbgFinder.compile_unit_count() != 0) {
+ // FIXME : What if more then one CUs are present in a module ?
+ MDNode *CU = *DbgFinder.compile_unit_begin();
EmitDebugDirectives = true;
SwitchToCU(CU);
}
-
// Emit debug info for decls of composite types.
EmitCompositeTypeDecls(M);
}
// Retreive the first valid debug Loc and process it.
const DebugLoc &DL = GetDebugLocForFunction(MF);
- ChangeDebugLoc(MF, DL, true);
-
- EmitFunctBeginDI(MF.getFunction());
-
+ // Emit debug info only if valid debug info is available.
+ if (!DL.isUnknown()) {
+ ChangeDebugLoc(MF, DL, true);
+ EmitFunctBeginDI(MF.getFunction());
+ }
// Set current line to 0 so that.line directive is genearted after .bf.
CurLine = 0;
}
///
void PIC16DbgInfo::ChangeDebugLoc(const MachineFunction &MF,
const DebugLoc &DL, bool IsInBeginFunction) {
- if (! EmitDebugDirectives) return;
- assert (! DL.isUnknown() && "can't change to invalid debug loc");
+ 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);
+ SwitchToCU(DL.getScope(MF.getFunction()->getContext()));
+ SwitchToLine(DL.getLine(), 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";
+ if (!IsInBeginFunction)
+ OS.EmitRawText("\n\t.line " + Twine(Line));
CurLine = Line;
}
///
void PIC16DbgInfo::EndFunction(const MachineFunction &MF) {
if (! EmitDebugDirectives) return;
- EmitFunctEndDI(MF.getFunction(), CurLine);
+ const DebugLoc &DL = GetDebugLocForFunction(MF);
+ // Emit debug info only if valid debug info is available.
+ if (!DL.isUnknown())
+ 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";
+ if (CurFile != "") OS.EmitRawText(StringRef("\n\t.eof"));
}
/// EmitCompositeTypeElements - Emit debug information for members of a
/// composite type.
///
void PIC16DbgInfo::EmitCompositeTypeElements (DICompositeType CTy,
- std::string UniqueSuffix) {
+ std::string SuffixNo) {
unsigned long Value = 0;
DIArray Elements = CTy.getTypeArray();
for (unsigned i = 0, N = Elements.getNumElements(); i < N; i++) {
bool HasAux = false;
int ElementAux[PIC16Dbg::AuxSize] = { 0 };
std::string TagName = "";
- std::string ElementName;
- GlobalVariable *GV = Element.getGV();
- DIDerivedType DITy(GV);
- DITy.getName(ElementName);
+ DIDerivedType DITy(Element);
unsigned short ElementSize = DITy.getSizeInBits()/8;
// Get mangleddd name for this structure/union element.
- std::string MangMemName = ElementName + UniqueSuffix;
+ std::string MangMemName = DITy.getName().str() + SuffixNo;
PopulateDebugInfo(DITy, TypeNo, HasAux, ElementAux, TagName);
- short Class;
+ short Class = 0;
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);
+ EmitSymbol(MangMemName.c_str(), Class, TypeNo, Value);
if (CTy.getTag() == dwarf::DW_TAG_structure_type)
Value += ElementSize;
if (HasAux)
- EmitAuxEntry(MangMemName, ElementAux, PIC16Dbg::AuxSize, TagName);
+ EmitAuxEntry(MangMemName.c_str(), ElementAux, PIC16Dbg::AuxSize, TagName);
}
}
/// and union declarations.
///
void PIC16DbgInfo::EmitCompositeTypeDecls(Module &M) {
- for(iplist<GlobalVariable>::iterator I = M.getGlobalList().begin(),
- E = M.getGlobalList().end(); I != E; I++) {
- // Structures and union declaration's debug info has llvm.dbg.composite
- // in its name.
- if(I->getName().find("llvm.dbg.composite") != std::string::npos) {
- GlobalVariable *GV = cast<GlobalVariable >(I);
- DICompositeType CTy(GV);
- if (CTy.getTag() == dwarf::DW_TAG_union_type ||
- CTy.getTag() == dwarf::DW_TAG_structure_type ) {
- std::string name;
- CTy.getName(name);
- std::string DIVar = I->getName();
- // Get the number after llvm.dbg.composite and make UniqueSuffix from
- // it.
- std::string UniqueSuffix = "." + DIVar.substr(18);
- std::string MangledCTyName = name + UniqueSuffix;
- unsigned short size = CTy.getSizeInBits()/8;
- int Aux[PIC16Dbg::AuxSize] = {0};
- // 7th and 8th byte represent size of structure/union.
- Aux[6] = size & 0xff;
- Aux[7] = size >> 8;
- // Emit .def for structure/union tag.
- if( CTy.getTag() == dwarf::DW_TAG_union_type)
- EmitSymbol(MangledCTyName, PIC16Dbg::C_UNTAG);
- else if (CTy.getTag() == dwarf::DW_TAG_structure_type)
- EmitSymbol(MangledCTyName, PIC16Dbg::C_STRTAG);
-
- // Emit auxiliary debug information for structure/union tag.
- EmitAuxEntry(MangledCTyName, Aux, PIC16Dbg::AuxSize);
-
- // Emit members.
- EmitCompositeTypeElements (CTy, UniqueSuffix);
-
- // Emit mangled Symbol for end of structure/union.
- std::string EOSSymbol = ".eos" + UniqueSuffix;
- EmitSymbol(EOSSymbol, PIC16Dbg::C_EOS);
- EmitAuxEntry(EOSSymbol, Aux, PIC16Dbg::AuxSize, MangledCTyName);
- }
+ DebugInfoFinder DbgFinder;
+ DbgFinder.processModule(M);
+ for (DebugInfoFinder::iterator I = DbgFinder.type_begin(),
+ E = DbgFinder.type_end(); I != E; ++I) {
+ DICompositeType CTy(*I);
+ if (!CTy.Verify())
+ continue;
+ if (CTy.getTag() == dwarf::DW_TAG_union_type ||
+ CTy.getTag() == dwarf::DW_TAG_structure_type ) {
+ // Get the number after llvm.dbg.composite and make UniqueSuffix from
+ // it.
+ std::string DIVar = CTy->getNameStr();
+ std::string UniqueSuffix = "." + DIVar.substr(18);
+ std::string MangledCTyName = CTy.getName().str() + UniqueSuffix;
+ unsigned short size = CTy.getSizeInBits()/8;
+ int Aux[PIC16Dbg::AuxSize] = {0};
+ // 7th and 8th byte represent size of structure/union.
+ Aux[6] = size & 0xff;
+ Aux[7] = size >> 8;
+ // Emit .def for structure/union tag.
+ if( CTy.getTag() == dwarf::DW_TAG_union_type)
+ EmitSymbol(MangledCTyName.c_str(), PIC16Dbg::C_UNTAG);
+ else if (CTy.getTag() == dwarf::DW_TAG_structure_type)
+ EmitSymbol(MangledCTyName.c_str(), PIC16Dbg::C_STRTAG);
+
+ // Emit auxiliary debug information for structure/union tag.
+ EmitAuxEntry(MangledCTyName.c_str(), Aux, PIC16Dbg::AuxSize);
+
+ // Emit members.
+ EmitCompositeTypeElements (CTy, UniqueSuffix);
+
+ // Emit mangled Symbol for end of structure/union.
+ std::string EOSSymbol = ".eos" + UniqueSuffix;
+ EmitSymbol(EOSSymbol.c_str(), PIC16Dbg::C_EOS);
+ EmitAuxEntry(EOSSymbol.c_str(), Aux, PIC16Dbg::AuxSize,
+ MangledCTyName.c_str());
}
}
}
+
/// EmitFunctBeginDI - Emit .bf for function.
///
void PIC16DbgInfo::EmitFunctBeginDI(const Function *F) {
///
void PIC16DbgInfo::EmitAuxEntry(const std::string VarName, int Aux[], int Num,
std::string TagName) {
- O << "\n\t.dim " << VarName << ", 1" ;
+ std::string Tmp;
// TagName is emitted in case of structure/union objects.
- if (TagName != "")
- O << ", " << TagName;
+ if (!TagName.empty()) Tmp += ", " + TagName;
+
for (int i = 0; i<Num; i++)
- O << "," << Aux[i];
+ Tmp += "," + utostr(Aux[i] & 0xff);
+
+ OS.EmitRawText("\n\t.dim " + Twine(VarName) + ", 1" + Tmp);
}
/// 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 = "
- << Class;
+void PIC16DbgInfo::EmitSymbol(std::string Name, short Class,
+ unsigned short Type, unsigned long Value) {
+ std::string Tmp;
if (Value > 0)
- O << ", value = " << Value;
+ Tmp = ", value = " + utostr(Value);
+
+ OS.EmitRawText("\n\t.def " + Twine(Name) + ", type = " + utostr(Type) +
+ ", class = " + utostr(Class) + Tmp);
}
/// EmitVarDebugInfo - Emit debug information for all variables.
///
void PIC16DbgInfo::EmitVarDebugInfo(Module &M) {
- GlobalVariable *Root = M.getGlobalVariable("llvm.dbg.global_variables");
- if (!Root)
- return;
-
- Constant *RootC = cast<Constant>(*Root->use_begin());
- for (Value::use_iterator UI = RootC->use_begin(), UE = Root->use_end();
- UI != UE; ++UI) {
- for (Value::use_iterator UUI = UI->use_begin(), UUE = UI->use_end();
- UUI != UUE; ++UUI) {
- DIGlobalVariable DIGV(cast<GlobalVariable>(*UUI));
- DIType Ty = DIGV.getType();
- unsigned short TypeNo = 0;
- bool HasAux = false;
- int Aux[PIC16Dbg::AuxSize] = { 0 };
- std::string TagName = "";
- std::string VarName = TAI->getGlobalPrefix()+DIGV.getGlobal()->getName();
- 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 = getStorageClass(DIGV);
- O << "\n\t.class " << VarName << ", " << ClassNo;
- if (HasAux)
- EmitAuxEntry(VarName, Aux, PIC16Dbg::AuxSize, TagName);
- }
+ DebugInfoFinder DbgFinder;
+ DbgFinder.processModule(M);
+
+ for (DebugInfoFinder::iterator I = DbgFinder.global_variable_begin(),
+ E = DbgFinder.global_variable_end(); I != E; ++I) {
+ DIGlobalVariable DIGV(*I);
+ DIType Ty = DIGV.getType();
+ unsigned short TypeNo = 0;
+ bool HasAux = false;
+ int Aux[PIC16Dbg::AuxSize] = { 0 };
+ std::string TagName = "";
+ std::string VarName = DIGV.getName();
+ VarName = MAI->getGlobalPrefix() + VarName;
+ PopulateDebugInfo(Ty, TypeNo, HasAux, Aux, TagName);
+ // Emit debug info only if type information is availaible.
+ if (TypeNo != PIC16Dbg::T_NULL) {
+ OS.EmitRawText("\t.type " + Twine(VarName) + ", " + Twine(TypeNo));
+ short ClassNo = getStorageClass(DIGV);
+ OS.EmitRawText("\t.class " + Twine(VarName) + ", " + Twine(ClassNo));
+ if (HasAux)
+ EmitAuxEntry(VarName, Aux, PIC16Dbg::AuxSize, TagName);
}
}
- O << "\n";
}
/// SwitchToCU - Switch to a new compilation unit.
///
-void PIC16DbgInfo::SwitchToCU(GlobalVariable *CU) {
+void PIC16DbgInfo::SwitchToCU(MDNode *CU) {
// Get the file path from CU.
DICompileUnit cu(CU);
- std::string DirName, FileName;
- std::string FilePath = cu.getDirectory(DirName) + "/" +
- cu.getFilename(FileName);
+ std::string DirName = cu.getDirectory();
+ std::string FileName = cu.getFilename();
+ std::string FilePath = DirName + "/" + 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" ;
+ if (CurFile != "")
+ OS.EmitRawText(StringRef("\t.eof"));
+ OS.EmitRawText("\n\t.file\t\"" + Twine(FilePath) + "\"");
CurFile = FilePath;
CurLine = 0;
}
///
void PIC16DbgInfo::EmitEOF() {
if (CurFile != "")
- O << "\n\t.EOF";
+ OS.EmitRawText(StringRef("\t.EOF"));
}
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