148 lines
4.8 KiB
C++
148 lines
4.8 KiB
C++
//===-- WDC65816AsmPrinter.cpp - WDC65816 LLVM assembly writer ------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file contains a printer that converts from our internal representation
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// of machine-dependent LLVM code to GAS-format SPARC assembly language.
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//
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//===----------------------------------------------------------------------===//
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#define DEBUG_TYPE "asm-printer"
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#include "WDC65816.h"
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#include "WDC65816InstrInfo.h"
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#include "WDC65816TargetMachine.h"
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#include "MCTargetDesc/WDC65816BaseInfo.h"
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#include "MCTargetDesc/WDC65816TargetStreamer.h"
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#include "llvm/ADT/SmallString.h"
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#include "llvm/CodeGen/AsmPrinter.h"
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#include "llvm/CodeGen/MachineInstr.h"
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#include "llvm/CodeGen/MachineRegisterInfo.h"
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#include "llvm/IR/Module.h"
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#include "llvm/MC/MCAsmInfo.h"
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#include "llvm/MC/MCStreamer.h"
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#include "llvm/MC/MCSymbol.h"
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#include "llvm/Support/TargetRegistry.h"
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#include "llvm/Support/raw_ostream.h"
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#include "llvm/Target/Mangler.h"
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using namespace llvm;
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namespace {
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class WDC65816AsmPrinter : public AsmPrinter {
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WDC65816TargetStreamer &getTargetStreamer();
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public:
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explicit WDC65816AsmPrinter(TargetMachine &TM, MCStreamer &Streamer)
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: AsmPrinter(TM, Streamer) {}
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virtual const char *getPassName() const {
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return "WDC65816 Assembly Printer";
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}
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void printInstruction(const MachineInstr *MI, raw_ostream &OS);// autogen'd.
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void printOperand(const MachineInstr *MI, int opNum, raw_ostream &OS);
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void printMemOperand(const MachineInstr *MI, int opNum, raw_ostream &OS,
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const char *Modifier = 0);
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bool printGetPCX(const MachineInstr *MI, unsigned OpNo, raw_ostream &OS);
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static const char *getRegisterName(unsigned RegNo);
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virtual void EmitStartOfAsmFile(Module &module);
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virtual void EmitEndOfAsmFile(Module &module);
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virtual void EmitFunctionEntryLabel();
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virtual void EmitInstruction(const MachineInstr *MI) {
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SmallString<128> Str;
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raw_svector_ostream OS(Str);
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printInstruction(MI, OS);
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WDC65816TargetStreamer &streamer = getTargetStreamer();
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streamer.EmitInstruction(OS.str());
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}
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};
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} // end of anonymous namespace
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#include "WDC65816GenAsmWriter.inc"
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WDC65816TargetStreamer &WDC65816AsmPrinter::getTargetStreamer() {
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return static_cast<WDC65816TargetStreamer &>(OutStreamer.getTargetStreamer());
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}
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void WDC65816AsmPrinter::EmitStartOfAsmFile(Module &module)
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{
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WDC65816TargetStreamer &streamer = getTargetStreamer();
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streamer.EmitCaseDirective();
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streamer.EmitKeepDirective(module.getModuleIdentifier());
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streamer.EmitSegStartDirective(module.getModuleIdentifier());
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}
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void WDC65816AsmPrinter::EmitEndOfAsmFile(Module &module)
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{
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WDC65816TargetStreamer &streamer = getTargetStreamer();
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streamer.EmitSegEndDirective();
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}
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void WDC65816AsmPrinter::printOperand(const MachineInstr *MI, int opNum,
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raw_ostream &O) {
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const MachineOperand &MO = MI->getOperand(opNum);
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switch (MO.getType()) {
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default: llvm_unreachable("Not implemented yet!");
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case MachineOperand::MO_Register:
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O << StringRef(getRegisterName(MO.getReg()));
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return;
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case MachineOperand::MO_Immediate:
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O << "#" << MO.getImm();
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return;
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case MachineOperand::MO_MachineBasicBlock:
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O << *MO.getMBB()->getSymbol();
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return;
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case MachineOperand::MO_GlobalAddress: {
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O << *getSymbol(MO.getGlobal());
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return;
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}
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case MachineOperand::MO_ExternalSymbol: {
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O << MAI->getGlobalPrefix() << MO.getSymbolName();
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return;
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}
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}
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}
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void WDC65816AsmPrinter::printMemOperand(const MachineInstr *MI, int opNum,
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raw_ostream &O, const char *Modifier) {
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WDC_LOG("WDC_TODO - Unimplemented method called");
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}
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bool WDC65816AsmPrinter::printGetPCX(const MachineInstr *MI, unsigned opNum,
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raw_ostream &O) {
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WDC_LOG("WDC_TODO - Unimplemented method called");
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return true;
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}
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void WDC65816AsmPrinter::EmitFunctionEntryLabel() {
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WDC65816TargetStreamer &streamer = getTargetStreamer();
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streamer.EmitFunctionEntryLabel(CurrentFnSym->getName());
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}
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// Force static initialization.
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extern "C" void LLVMInitializeWDC65816AsmPrinter() {
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RegisterAsmPrinter<WDC65816AsmPrinter> X(TheWDC65816Target);
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WDC_LOG("Assembly printer registered");
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}
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