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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
157 lines
5.1 KiB
C++
157 lines
5.1 KiB
C++
//===-- BlackfinAsmPrinter.cpp - Blackfin 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 BLACKFIN assembly language.
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//
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//===----------------------------------------------------------------------===//
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#define DEBUG_TYPE "asm-printer"
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#include "Blackfin.h"
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#include "BlackfinInstrInfo.h"
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#include "llvm/Constants.h"
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#include "llvm/DerivedTypes.h"
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#include "llvm/Module.h"
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#include "llvm/CodeGen/AsmPrinter.h"
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#include "llvm/CodeGen/MachineFunctionPass.h"
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#include "llvm/CodeGen/MachineConstantPool.h"
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#include "llvm/CodeGen/MachineInstr.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/MCContext.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/TargetData.h"
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#include "llvm/Target/TargetLoweringObjectFile.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/ErrorHandling.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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class BlackfinAsmPrinter : public AsmPrinter {
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public:
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BlackfinAsmPrinter(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 "Blackfin Assembly Printer";
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}
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void printOperand(const MachineInstr *MI, int opNum, raw_ostream &O);
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void printMemoryOperand(const MachineInstr *MI, int opNum, raw_ostream &O);
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void printInstruction(const MachineInstr *MI, raw_ostream &O);// autogen'd.
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static const char *getRegisterName(unsigned RegNo);
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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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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, unsigned OpNo,
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unsigned AsmVariant, const char *ExtraCode,
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raw_ostream &O);
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};
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} // end of anonymous namespace
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#include "BlackfinGenAsmWriter.inc"
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extern "C" void LLVMInitializeBlackfinAsmPrinter() {
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RegisterAsmPrinter<BlackfinAsmPrinter> X(TheBlackfinTarget);
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}
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void BlackfinAsmPrinter::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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case MachineOperand::MO_Register:
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assert(TargetRegisterInfo::isPhysicalRegister(MO.getReg()) &&
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"Virtual registers should be already mapped!");
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O << getRegisterName(MO.getReg());
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break;
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case MachineOperand::MO_Immediate:
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O << MO.getImm();
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break;
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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 << *Mang->getSymbol(MO.getGlobal());
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printOffset(MO.getOffset(), O);
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break;
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case MachineOperand::MO_ExternalSymbol:
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O << *GetExternalSymbolSymbol(MO.getSymbolName());
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break;
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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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break;
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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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break;
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default:
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llvm_unreachable("<unknown operand type>");
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break;
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}
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}
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void BlackfinAsmPrinter::printMemoryOperand(const MachineInstr *MI, int opNum,
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raw_ostream &O) {
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printOperand(MI, opNum, O);
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if (MI->getOperand(opNum+1).isImm() && MI->getOperand(opNum+1).getImm() == 0)
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return;
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O << " + ";
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printOperand(MI, opNum+1, O);
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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 BlackfinAsmPrinter::PrintAsmOperand(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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if (ExtraCode[1] != 0) return true; // Unknown modifier.
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switch (ExtraCode[0]) {
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default: return true; // Unknown modifier.
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case 'r':
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break;
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}
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}
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printOperand(MI, OpNo, O);
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return false;
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}
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bool BlackfinAsmPrinter::PrintAsmMemoryOperand(const MachineInstr *MI,
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unsigned OpNo,
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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 << '[';
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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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