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diff --git a/lib/Target/PIC16/PIC16AsmPrinter.cpp b/lib/Target/PIC16/PIC16AsmPrinter.cpp
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+//===-- PIC16AsmPrinter.cpp - PIC16 LLVM assembly writer ------------------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file contains a printer that converts from our internal representation
+// of machine-dependent LLVM code to PIC16 assembly language.
+//
+//===----------------------------------------------------------------------===//
+
+#include "PIC16AsmPrinter.h"
+#include "PIC16TargetAsmInfo.h"
+#include "llvm/DerivedTypes.h"
+#include "llvm/Function.h"
+#include "llvm/Module.h"
+#include "llvm/CodeGen/DwarfWriter.h"
+#include "llvm/CodeGen/MachineFrameInfo.h"
+#include "llvm/Support/raw_ostream.h"
+#include "llvm/Support/Mangler.h"
+#include "llvm/CodeGen/DwarfWriter.h"
+#include "llvm/CodeGen/MachineModuleInfo.h"
+
+using namespace llvm;
+
+#include "PIC16GenAsmWriter.inc"
+
+bool PIC16AsmPrinter::printMachineInstruction(const MachineInstr *MI) {
+ printInstruction(MI);
+ return true;
+}
+
+/// runOnMachineFunction - This uses the printInstruction()
+/// method to print assembly for each instruction.
+///
+bool PIC16AsmPrinter::runOnMachineFunction(MachineFunction &MF) {
+ this->MF = &MF;
+
+ // This calls the base class function required to be called at beginning
+ // of runOnMachineFunction.
+ SetupMachineFunction(MF);
+
+ // Get the mangled name.
+ const Function *F = MF.getFunction();
+ CurrentFnName = Mang->getValueName(F);
+
+ // Emit the function variables.
+ EmitFunctionFrame(MF);
+
+ // Emit function begin debug directives
+ DbgInfo.EmitFunctBeginDI(F);
+
+ EmitAutos(CurrentFnName);
+ const char *codeSection = PAN::getCodeSectionName(CurrentFnName).c_str();
+
+ const Section *fCodeSection = TAI->getNamedSection(codeSection,
+ SectionFlags::Code);
+ O << "\n";
+ // Start the Code Section.
+ SwitchToSection (fCodeSection);
+
+ // Emit the frame address of the function at the beginning of code.
+ O << "\tretlw low(" << PAN::getFrameLabel(CurrentFnName) << ")\n";
+ O << "\tretlw high(" << PAN::getFrameLabel(CurrentFnName) << ")\n";
+
+ // 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;
+ O << "\n";
+ // Print out code for the function.
+ for (MachineFunction::const_iterator I = MF.begin(), E = MF.end();
+ I != E; ++I) {
+ // Print a label for the basic block.
+ if (I != MF.begin()) {
+ printBasicBlockLabel(I, true);
+ O << '\n';
+ }
+
+ for (MachineBasicBlock::const_iterator II = I->begin(), E = I->end();
+ II != E; ++II) {
+ // 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;
+ }
+ }
+
+ // Print the assembly for the instruction.
+ printMachineInstruction(II);
+ }
+ }
+
+ // Emit function end debug directives.
+ DbgInfo.EmitFunctEndDI(F, CurLine);
+ return false; // we didn't modify anything.
+}
+
+/// createPIC16CodePrinterPass - Returns a pass that prints the PIC16
+/// assembly code for a MachineFunction to the given output stream,
+/// using the given target machine description. This should work
+/// regardless of whether the function is in SSA form.
+///
+FunctionPass *llvm::createPIC16CodePrinterPass(raw_ostream &o,
+ PIC16TargetMachine &tm,
+ CodeGenOpt::Level OptLevel,
+ bool verbose) {
+ return new PIC16AsmPrinter(o, tm, tm.getTargetAsmInfo(), OptLevel, verbose);
+}
+
+
+// printOperand - print operand of insn.
+void PIC16AsmPrinter::printOperand(const MachineInstr *MI, int opNum) {
+ const MachineOperand &MO = MI->getOperand(opNum);
+
+ switch (MO.getType()) {
+ case MachineOperand::MO_Register:
+ if (TargetRegisterInfo::isPhysicalRegister(MO.getReg()))
+ O << TM.getRegisterInfo()->get(MO.getReg()).AsmName;
+ else
+ assert(0 && "not implemented");
+ return;
+
+ case MachineOperand::MO_Immediate:
+ O << (int)MO.getImm();
+ return;
+
+ case MachineOperand::MO_GlobalAddress: {
+ O << Mang->getValueName(MO.getGlobal());
+ break;
+ }
+ case MachineOperand::MO_ExternalSymbol: {
+ const char *Sname = MO.getSymbolName();
+
+ // If its a libcall name, record it to decls section.
+ if (PAN::getSymbolTag(Sname) == PAN::LIBCALL) {
+ LibcallDecls.push_back(Sname);
+ }
+
+ O << Sname;
+ break;
+ }
+ case MachineOperand::MO_MachineBasicBlock:
+ printBasicBlockLabel(MO.getMBB());
+ return;
+
+ default:
+ assert(0 && " Operand type not supported.");
+ }
+}
+
+void PIC16AsmPrinter::printCCOperand(const MachineInstr *MI, int opNum) {
+ int CC = (int)MI->getOperand(opNum).getImm();
+ O << PIC16CondCodeToString((PIC16CC::CondCodes)CC);
+}
+
+void PIC16AsmPrinter::printLibcallDecls(void) {
+ // If no libcalls used, return.
+ if (LibcallDecls.empty()) return;
+
+ O << TAI->getCommentString() << "External decls for libcalls - BEGIN." <<"\n";
+ // Remove duplicate entries.
+ LibcallDecls.sort();
+ LibcallDecls.unique();
+ for (std::list<const char*>::const_iterator I = LibcallDecls.begin();
+ I != LibcallDecls.end(); I++) {
+ O << TAI->getExternDirective() << *I << "\n";
+ O << TAI->getExternDirective() << PAN::getArgsLabel(*I) << "\n";
+ O << TAI->getExternDirective() << PAN::getRetvalLabel(*I) << "\n";
+ }
+ O << TAI->getCommentString() << "External decls for libcalls - END." <<"\n";
+}
+
+bool PIC16AsmPrinter::doInitialization (Module &M) {
+ bool Result = AsmPrinter::doInitialization(M);
+ DbgInfo.EmitFileDirective(M);
+
+ // FIXME:: This is temporary solution to generate the include file.
+ // The processor should be passed to llc as in input and the header file
+ // should be generated accordingly.
+ O << "\n\t#include P16F1937.INC\n";
+ MachineModuleInfo *MMI = getAnalysisIfAvailable<MachineModuleInfo>();
+ assert(MMI);
+ DwarfWriter *DW = getAnalysisIfAvailable<DwarfWriter>();
+ assert(DW && "Dwarf Writer is not available");
+ DW->BeginModule(&M, MMI, O, this, TAI);
+
+ // Set the section names for all globals.
+ for (Module::global_iterator I = M.global_begin(), E = M.global_end();
+ I != E; ++I) {
+ I->setSection(TAI->SectionForGlobal(I)->getName());
+ }
+
+ EmitFunctionDecls(M);
+ EmitUndefinedVars(M);
+ EmitDefinedVars(M);
+ EmitIData(M);
+ EmitUData(M);
+ EmitRomData(M);
+ DbgInfo.PopulateFunctsDI(M);
+ return Result;
+}
+
+// Emit extern decls for functions imported from other modules, and emit
+// global declarations for function defined in this module and which are
+// available to other modules.
+void PIC16AsmPrinter::EmitFunctionDecls (Module &M) {
+ // Emit declarations for external functions.
+ O << TAI->getCommentString() << "Function Declarations - BEGIN." <<"\n";
+ for (Module::iterator I = M.begin(), E = M.end(); I != E; I++) {
+ std::string Name = Mang->getValueName(I);
+ if (Name.compare("@abort") == 0)
+ continue;
+
+ // If it is llvm intrinsic call then don't emit
+ if (Name.find("llvm.") != std::string::npos)
+ continue;
+
+ if (! (I->isDeclaration() || I->hasExternalLinkage()))
+ continue;
+
+ const char *directive = I->isDeclaration() ? TAI->getExternDirective() :
+ TAI->getGlobalDirective();
+
+ O << directive << Name << "\n";
+ O << directive << PAN::getRetvalLabel(Name) << "\n";
+ O << directive << PAN::getArgsLabel(Name) << "\n";
+ }
+
+ O << TAI->getCommentString() << "Function Declarations - END." <<"\n";
+}
+
+// Emit variables imported from other Modules.
+void PIC16AsmPrinter::EmitUndefinedVars (Module &M)
+{
+ std::vector<const GlobalVariable*> Items = PTAI->ExternalVarDecls->Items;
+ if (! Items.size()) return;
+
+ O << "\n" << TAI->getCommentString() << "Imported Variables - BEGIN" << "\n";
+ for (unsigned j = 0; j < Items.size(); j++) {
+ O << TAI->getExternDirective() << Mang->getValueName(Items[j]) << "\n";
+ }
+ O << TAI->getCommentString() << "Imported Variables - END" << "\n";
+}
+
+// Emit variables defined in this module and are available to other modules.
+void PIC16AsmPrinter::EmitDefinedVars (Module &M)
+{
+ std::vector<const GlobalVariable*> Items = PTAI->ExternalVarDefs->Items;
+ if (! Items.size()) return;
+
+ O << "\n" << TAI->getCommentString() << "Exported Variables - BEGIN" << "\n";
+ for (unsigned j = 0; j < Items.size(); j++) {
+ O << TAI->getGlobalDirective() << Mang->getValueName(Items[j]) << "\n";
+ }
+ O << TAI->getCommentString() << "Exported Variables - END" << "\n";
+}
+
+// Emit initialized data placed in ROM.
+void PIC16AsmPrinter::EmitRomData (Module &M)
+{
+
+ std::vector<const GlobalVariable*> Items = PTAI->ROSection->Items;
+ if (! Items.size()) return;
+
+ // Print ROData ection.
+ O << "\n";
+ SwitchToSection(PTAI->ROSection->S_);
+ for (unsigned j = 0; j < Items.size(); j++) {
+ O << Mang->getValueName(Items[j]);
+ Constant *C = Items[j]->getInitializer();
+ int AddrSpace = Items[j]->getType()->getAddressSpace();
+ EmitGlobalConstant(C, AddrSpace);
+ }
+}
+
+bool PIC16AsmPrinter::doFinalization(Module &M) {
+ printLibcallDecls();
+ DbgInfo.EmitVarDebugInfo(M);
+ O << "\n\t" << ".EOF";
+ O << "\n\t" << "END\n";
+ bool Result = AsmPrinter::doFinalization(M);
+ return Result;
+}
+
+void PIC16AsmPrinter::EmitFunctionFrame(MachineFunction &MF) {
+ const Function *F = MF.getFunction();
+ std::string FuncName = Mang->getValueName(F);
+ const TargetData *TD = TM.getTargetData();
+ // Emit the data section name.
+ O << "\n";
+ const char *SectionName = PAN::getFrameSectionName(CurrentFnName).c_str();
+
+ const Section *fPDataSection = TAI->getNamedSection(SectionName,
+ SectionFlags::Writeable);
+ SwitchToSection(fPDataSection);
+
+ // Emit function frame label
+ O << PAN::getFrameLabel(CurrentFnName) << ":\n";
+
+ const Type *RetType = F->getReturnType();
+ unsigned RetSize = 0;
+ if (RetType->getTypeID() != Type::VoidTyID)
+ RetSize = TD->getTypeAllocSize(RetType);
+
+ //Emit function return value space
+ // FIXME: Do not emit RetvalLable when retsize is zero. To do this
+ // we will need to avoid printing a global directive for Retval label
+ // in emitExternandGloblas.
+ if(RetSize > 0)
+ O << PAN::getRetvalLabel(CurrentFnName) << " RES " << RetSize << "\n";
+ else
+ O << PAN::getRetvalLabel(CurrentFnName) << ": \n";
+
+ // Emit variable to hold the space for function arguments
+ unsigned ArgSize = 0;
+ for (Function::const_arg_iterator argi = F->arg_begin(),
+ arge = F->arg_end(); argi != arge ; ++argi) {
+ const Type *Ty = argi->getType();
+ ArgSize += TD->getTypeAllocSize(Ty);
+ }
+
+ O << PAN::getArgsLabel(CurrentFnName) << " RES " << ArgSize << "\n";
+
+ // Emit temporary space
+ int TempSize = PTLI->GetTmpSize();
+ if (TempSize > 0 )
+ O << PAN::getTempdataLabel(CurrentFnName) << " RES " << TempSize <<"\n";
+}
+
+void PIC16AsmPrinter::EmitIData (Module &M) {
+
+ // Print all IDATA sections.
+ std::vector <PIC16Section *>IDATASections = PTAI->IDATASections;
+ for (unsigned i = 0; i < IDATASections.size(); i++) {
+ O << "\n";
+ SwitchToSection(IDATASections[i]->S_);
+ std::vector<const GlobalVariable*> Items = IDATASections[i]->Items;
+ for (unsigned j = 0; j < Items.size(); j++) {
+ std::string Name = Mang->getValueName(Items[j]);
+ Constant *C = Items[j]->getInitializer();
+ int AddrSpace = Items[j]->getType()->getAddressSpace();
+ O << Name;
+ EmitGlobalConstant(C, AddrSpace);
+ }
+ }
+}
+
+void PIC16AsmPrinter::EmitUData (Module &M) {
+ const TargetData *TD = TM.getTargetData();
+
+ // Print all BSS sections.
+ std::vector <PIC16Section *>BSSSections = PTAI->BSSSections;
+ for (unsigned i = 0; i < BSSSections.size(); i++) {
+ O << "\n";
+ SwitchToSection(BSSSections[i]->S_);
+ std::vector<const GlobalVariable*> Items = BSSSections[i]->Items;
+ for (unsigned j = 0; j < Items.size(); j++) {
+ std::string Name = Mang->getValueName(Items[j]);
+ Constant *C = Items[j]->getInitializer();
+ const Type *Ty = C->getType();
+ unsigned Size = TD->getTypeAllocSize(Ty);
+
+ O << Name << " " <<"RES"<< " " << Size ;
+ O << "\n";
+ }
+ }
+}
+
+void PIC16AsmPrinter::EmitAutos (std::string FunctName)
+{
+ // Section names for all globals are already set.
+
+ const TargetData *TD = TM.getTargetData();
+
+ // Now print Autos section for this function.
+ std::string SectionName = PAN::getAutosSectionName(FunctName);
+ std::vector <PIC16Section *>AutosSections = PTAI->AutosSections;
+ for (unsigned i = 0; i < AutosSections.size(); i++) {
+ O << "\n";
+ if (AutosSections[i]->S_->getName() == SectionName) {
+ SwitchToSection(AutosSections[i]->S_);
+ std::vector<const GlobalVariable*> Items = AutosSections[i]->Items;
+ for (unsigned j = 0; j < Items.size(); j++) {
+ std::string VarName = Mang->getValueName(Items[j]);
+ Constant *C = Items[j]->getInitializer();
+ const Type *Ty = C->getType();
+ unsigned Size = TD->getTypeAllocSize(Ty);
+ // Emit memory reserve directive.
+ O << VarName << " RES " << Size << "\n";
+ }
+ break;
+ }
+ }
+}
+
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