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that should be split out is the InstPrinter (if a target is mc'ized). This change makes all the targets be consistent. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119056 91177308-0d34-0410-b5e6-96231b3b80d8
167 lines
5.4 KiB
C++
167 lines
5.4 KiB
C++
//===-- AlphaAsmPrinter.cpp - Alpha 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 Alpha assembly language.
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//
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//===----------------------------------------------------------------------===//
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#define DEBUG_TYPE "asm-printer"
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#include "Alpha.h"
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#include "AlphaInstrInfo.h"
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#include "AlphaTargetMachine.h"
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#include "llvm/Module.h"
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#include "llvm/Type.h"
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#include "llvm/Assembly/Writer.h"
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#include "llvm/CodeGen/AsmPrinter.h"
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#include "llvm/MC/MCStreamer.h"
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#include "llvm/MC/MCAsmInfo.h"
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#include "llvm/MC/MCSymbol.h"
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#include "llvm/Target/Mangler.h"
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#include "llvm/Target/TargetLoweringObjectFile.h"
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#include "llvm/Target/TargetMachine.h"
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#include "llvm/Target/TargetRegistry.h"
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#include "llvm/ADT/SmallString.h"
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#include "llvm/Support/raw_ostream.h"
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using namespace llvm;
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namespace {
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struct AlphaAsmPrinter : public AsmPrinter {
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/// Unique incrementer for label values for referencing Global values.
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///
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explicit AlphaAsmPrinter(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 "Alpha Assembly Printer";
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}
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void printInstruction(const MachineInstr *MI, raw_ostream &O);
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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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OutStreamer.EmitRawText(OS.str());
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}
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static const char *getRegisterName(unsigned RegNo);
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void printOp(const MachineOperand &MO, raw_ostream &O);
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void printOperand(const MachineInstr *MI, int opNum, raw_ostream &O);
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virtual void EmitFunctionBodyStart();
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virtual void EmitFunctionBodyEnd();
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void EmitStartOfAsmFile(Module &M);
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bool PrintAsmOperand(const MachineInstr *MI, unsigned OpNo,
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unsigned AsmVariant, const char *ExtraCode,
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raw_ostream &O);
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bool PrintAsmMemoryOperand(const MachineInstr *MI,
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unsigned OpNo, unsigned AsmVariant,
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const char *ExtraCode, raw_ostream &O);
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};
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} // end of anonymous namespace
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#include "AlphaGenAsmWriter.inc"
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void AlphaAsmPrinter::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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if (MO.isReg()) {
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assert(TargetRegisterInfo::isPhysicalRegister(MO.getReg()) &&
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"Not physreg??");
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O << getRegisterName(MO.getReg());
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} else if (MO.isImm()) {
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O << MO.getImm();
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assert(MO.getImm() < (1 << 30));
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} else {
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printOp(MO, O);
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}
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}
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void AlphaAsmPrinter::printOp(const MachineOperand &MO, raw_ostream &O) {
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switch (MO.getType()) {
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case MachineOperand::MO_Register:
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O << getRegisterName(MO.getReg());
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return;
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case MachineOperand::MO_Immediate:
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assert(0 && "printOp() does not handle immediate values");
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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_ConstantPoolIndex:
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O << MAI->getPrivateGlobalPrefix() << "CPI" << getFunctionNumber() << "_"
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<< MO.getIndex();
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return;
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case MachineOperand::MO_ExternalSymbol:
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O << MO.getSymbolName();
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return;
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case MachineOperand::MO_GlobalAddress:
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O << *Mang->getSymbol(MO.getGlobal());
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return;
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case MachineOperand::MO_JumpTableIndex:
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O << MAI->getPrivateGlobalPrefix() << "JTI" << getFunctionNumber()
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<< '_' << MO.getIndex();
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return;
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default:
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O << "<unknown operand type: " << MO.getType() << ">";
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return;
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}
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}
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/// EmitFunctionBodyStart - Targets can override this to emit stuff before
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/// the first basic block in the function.
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void AlphaAsmPrinter::EmitFunctionBodyStart() {
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OutStreamer.EmitRawText("\t.ent " + Twine(CurrentFnSym->getName()));
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}
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/// EmitFunctionBodyEnd - Targets can override this to emit stuff after
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/// the last basic block in the function.
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void AlphaAsmPrinter::EmitFunctionBodyEnd() {
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OutStreamer.EmitRawText("\t.end " + Twine(CurrentFnSym->getName()));
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}
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void AlphaAsmPrinter::EmitStartOfAsmFile(Module &M) {
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OutStreamer.EmitRawText(StringRef("\t.arch ev6"));
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OutStreamer.EmitRawText(StringRef("\t.set noat"));
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}
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/// PrintAsmOperand - Print out an operand for an inline asm expression.
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///
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bool AlphaAsmPrinter::PrintAsmOperand(const MachineInstr *MI, unsigned OpNo,
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unsigned AsmVariant,
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const char *ExtraCode, raw_ostream &O) {
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printOperand(MI, OpNo, O);
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return false;
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}
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bool AlphaAsmPrinter::PrintAsmMemoryOperand(const MachineInstr *MI,
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unsigned OpNo, unsigned AsmVariant,
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const char *ExtraCode,
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raw_ostream &O) {
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if (ExtraCode && ExtraCode[0])
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return true; // Unknown modifier.
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O << "0(";
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printOperand(MI, OpNo, O);
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O << ")";
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return false;
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}
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// Force static initialization.
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extern "C" void LLVMInitializeAlphaAsmPrinter() {
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RegisterAsmPrinter<AlphaAsmPrinter> X(TheAlphaTarget);
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}
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