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-rw-r--r--contrib/llvm/lib/Target/PIC16/PIC16DebugInfo.cpp490
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diff --git a/contrib/llvm/lib/Target/PIC16/PIC16DebugInfo.cpp b/contrib/llvm/lib/Target/PIC16/PIC16DebugInfo.cpp
deleted file mode 100644
index 7a948de..0000000
--- a/contrib/llvm/lib/Target/PIC16/PIC16DebugInfo.cpp
+++ /dev/null
@@ -1,490 +0,0 @@
-
-//===-- PIC16DebugInfo.cpp - Implementation for PIC16 Debug Information ======//
-//
-// The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// This file contains the helper functions for representing debug information.
-//
-//===----------------------------------------------------------------------===//
-
-#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/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())
- PopulateBasicTypeInfo (Ty, TypeNo);
- 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;
- }
- return;
-}
-
-/// PopulateBasicTypeInfo- Populate TypeNo for basic type from Ty.
-///
-void PIC16DbgInfo::PopulateBasicTypeInfo (DIType Ty, unsigned short &TypeNo) {
- std::string Name = Ty.getName();
- 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 information about the base type of
- // pointer in TypeNo.
- DIType BaseType = DIDerivedType(Ty).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);
- 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);
- 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);
- TypeNo = TypeNo << PIC16Dbg::S_BASIC;
- if (Ty.getTag() == dwarf::DW_TAG_structure_type)
- TypeNo = TypeNo | PIC16Dbg::T_STRUCT;
- else
- TypeNo = TypeNo | PIC16Dbg::T_UNION;
- TagName = CTy.getName();
- // UniqueSuffix is .number where number is obtained from
- // llvm.dbg.composite<number>.
- // 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.
- 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;
- else if (type == "short")
- return PIC16Dbg::T_SHORT;
- else if (type == "int")
- return PIC16Dbg::T_INT;
- else if (type == "long")
- return PIC16Dbg::T_LONG;
- else if (type == "unsigned char")
- return PIC16Dbg::T_UCHAR;
- else if (type == "unsigned short")
- return PIC16Dbg::T_USHORT;
- else if (type == "unsigned int")
- return PIC16Dbg::T_UINT;
- else if (type == "unsigned long")
- return PIC16Dbg::T_ULONG;
- else
- return 0;
-}
-
-/// GetStorageClass - Get storage class for give debug variable.
-///
-short PIC16DbgInfo::getStorageClass(DIGlobalVariable DIGV) {
- short ClassNo;
- 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;
- }
- else if (DIGV.isLocalToUnit())
- ClassNo = PIC16Dbg::C_STAT;
- else
- ClassNo = PIC16Dbg::C_EXT;
- return ClassNo;
-}
-
-/// BeginModule - Emit necessary debug info to start a Module and do other
-/// required initializations.
-void PIC16DbgInfo::BeginModule(Module &M) {
- // Emit file directive for module.
- 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);
-}
-
-/// 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);
- // 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;
-}
-
-/// 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");
-
- 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)
- OS.EmitRawText("\n\t.line " + Twine(Line));
- CurLine = Line;
-}
-
-/// EndFunction - Emit .ef for end of function.
-///
-void PIC16DbgInfo::EndFunction(const MachineFunction &MF) {
- if (! EmitDebugDirectives) return;
- 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 != "") OS.EmitRawText(StringRef("\n\t.eof"));
-}
-
-/// EmitCompositeTypeElements - Emit debug information for members of a
-/// composite type.
-///
-void PIC16DbgInfo::EmitCompositeTypeElements (DICompositeType CTy,
- std::string SuffixNo) {
- 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 = "";
- DIDerivedType DITy(Element);
- unsigned short ElementSize = DITy.getSizeInBits()/8;
- // Get mangleddd name for this structure/union element.
- std::string MangMemName = DITy.getName().str() + SuffixNo;
- PopulateDebugInfo(DITy, TypeNo, HasAux, ElementAux, TagName);
- 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.c_str(), Class, TypeNo, Value);
- if (CTy.getTag() == dwarf::DW_TAG_structure_type)
- Value += ElementSize;
- if (HasAux)
- EmitAuxEntry(MangMemName.c_str(), ElementAux, PIC16Dbg::AuxSize, TagName);
- }
-}
-
-/// EmitCompositeTypeDecls - Emit composite type declarations like structure
-/// and union declarations.
-///
-void PIC16DbgInfo::EmitCompositeTypeDecls(Module &M) {
- 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) {
- std::string FunctName = F->getName();
- if (EmitDebugDirectives) {
- std::string FunctBeginSym = ".bf." + FunctName;
- std::string BlockBeginSym = ".bb." + FunctName;
-
- int BFAux[PIC16Dbg::AuxSize] = {0};
- 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) {
- std::string FunctEndSym = ".ef." + FunctName;
- std::string BlockEndSym = ".eb." + FunctName;
-
- // Emit debug directives for end of function.
- EmitSymbol(BlockEndSym, PIC16Dbg::C_BLOCK);
- int EFAux[PIC16Dbg::AuxSize] = {0};
- // 5th and 6th byte stand for line number.
- EFAux[4] = CurLine;
- EFAux[5] = CurLine >> 8;
- EmitAuxEntry(BlockEndSym, EFAux, PIC16Dbg::AuxSize);
- EmitSymbol(FunctEndSym, PIC16Dbg::C_FCN);
- EmitAuxEntry(FunctEndSym, EFAux, PIC16Dbg::AuxSize);
- }
-}
-
-/// EmitAuxEntry - Emit Auxiliary debug information.
-///
-void PIC16DbgInfo::EmitAuxEntry(const std::string VarName, int Aux[], int Num,
- std::string TagName) {
- std::string Tmp;
- // TagName is emitted in case of structure/union objects.
- if (!TagName.empty()) Tmp += ", " + TagName;
-
- for (int i = 0; i<Num; 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) {
- std::string Tmp;
- if (Value > 0)
- 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) {
- 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);
- }
- }
-}
-
-/// SwitchToCU - Switch to a new compilation unit.
-///
-void PIC16DbgInfo::SwitchToCU(MDNode *CU) {
- // Get the file path from CU.
- DICompileUnit cu(CU);
- 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 != "")
- OS.EmitRawText(StringRef("\t.eof"));
- OS.EmitRawText("\n\t.file\t\"" + Twine(FilePath) + "\"");
- CurFile = FilePath;
- CurLine = 0;
-}
-
-/// EmitEOF - Emit .eof for end of file.
-///
-void PIC16DbgInfo::EmitEOF() {
- if (CurFile != "")
- OS.EmitRawText(StringRef("\t.EOF"));
-}
-
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