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//===-- HexagonAsmPrinter.h - Print machine code to an Hexagon .s file ----===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// Hexagon Assembly printer class.
//
//===----------------------------------------------------------------------===//
#ifndef HEXAGONASMPRINTER_H
#define HEXAGONASMPRINTER_H
#include "Hexagon.h"
#include "HexagonTargetMachine.h"
#include "llvm/CodeGen/AsmPrinter.h"
#include "llvm/Support/Compiler.h"
#include "llvm/Support/raw_ostream.h"
namespace llvm {
class HexagonAsmPrinter : public AsmPrinter {
const HexagonSubtarget *Subtarget;
public:
explicit HexagonAsmPrinter(TargetMachine &TM, MCStreamer &Streamer)
: AsmPrinter(TM, Streamer) {
Subtarget = &TM.getSubtarget<HexagonSubtarget>();
}
virtual const char *getPassName() const {
return "Hexagon Assembly Printer";
}
bool isBlockOnlyReachableByFallthrough(const MachineBasicBlock *MBB) const;
virtual void EmitInstruction(const MachineInstr *MI);
virtual void EmitAlignment(unsigned NumBits,
const GlobalValue *GV = 0) const;
void printOperand(const MachineInstr *MI, unsigned OpNo, raw_ostream &O);
bool PrintAsmOperand(const MachineInstr *MI, unsigned OpNo,
unsigned AsmVariant, const char *ExtraCode,
raw_ostream &OS);
bool PrintAsmMemoryOperand(const MachineInstr *MI, unsigned OpNo,
unsigned AsmVariant, const char *ExtraCode,
raw_ostream &OS);
/// printInstruction - This method is automatically generated by tablegen
/// from the instruction set description. This method returns true if the
/// machine instruction was sufficiently described to print it, otherwise it
/// returns false.
void printInstruction(const MachineInstr *MI, raw_ostream &O);
// void printMachineInstruction(const MachineInstr *MI);
void printOp(const MachineOperand &MO, raw_ostream &O);
/// printRegister - Print register according to target requirements.
///
void printRegister(const MachineOperand &MO, bool R0AsZero,
raw_ostream &O) {
unsigned RegNo = MO.getReg();
assert(TargetRegisterInfo::isPhysicalRegister(RegNo) && "Not physreg??");
O << getRegisterName(RegNo);
}
void printImmOperand(const MachineInstr *MI, unsigned OpNo,
raw_ostream &O) {
int value = MI->getOperand(OpNo).getImm();
O << value;
}
void printNegImmOperand(const MachineInstr *MI, unsigned OpNo,
raw_ostream &O) {
int value = MI->getOperand(OpNo).getImm();
O << -value;
}
void printMEMriOperand(const MachineInstr *MI, unsigned OpNo,
raw_ostream &O) {
const MachineOperand &MO1 = MI->getOperand(OpNo);
const MachineOperand &MO2 = MI->getOperand(OpNo+1);
O << getRegisterName(MO1.getReg())
<< " + #"
<< (int) MO2.getImm();
}
void printFrameIndexOperand(const MachineInstr *MI, unsigned OpNo,
raw_ostream &O) {
const MachineOperand &MO1 = MI->getOperand(OpNo);
const MachineOperand &MO2 = MI->getOperand(OpNo+1);
O << getRegisterName(MO1.getReg())
<< ", #"
<< MO2.getImm();
}
void printBranchOperand(const MachineInstr *MI, unsigned OpNo,
raw_ostream &O) {
// Branches can take an immediate operand. This is used by the branch
// selection pass to print $+8, an eight byte displacement from the PC.
if (MI->getOperand(OpNo).isImm()) {
O << "$+" << MI->getOperand(OpNo).getImm()*4;
} else {
printOp(MI->getOperand(OpNo), O);
}
}
void printCallOperand(const MachineInstr *MI, unsigned OpNo,
raw_ostream &O) {
}
void printAbsAddrOperand(const MachineInstr *MI, unsigned OpNo,
raw_ostream &O) {
}
void printSymbolHi(const MachineInstr *MI, unsigned OpNo, raw_ostream &O) {
O << "#HI(";
if (MI->getOperand(OpNo).isImm()) {
printImmOperand(MI, OpNo, O);
}
else {
printOp(MI->getOperand(OpNo), O);
}
O << ")";
}
void printSymbolLo(const MachineInstr *MI, unsigned OpNo, raw_ostream &O) {
O << "#HI(";
if (MI->getOperand(OpNo).isImm()) {
printImmOperand(MI, OpNo, O);
}
else {
printOp(MI->getOperand(OpNo), O);
}
O << ")";
}
void printPredicateOperand(const MachineInstr *MI, unsigned OpNo,
raw_ostream &O);
#if 0
void printModuleLevelGV(const GlobalVariable* GVar, raw_ostream &O);
#endif
void printAddrModeBasePlusOffset(const MachineInstr *MI, int OpNo,
raw_ostream &O);
void printGlobalOperand(const MachineInstr *MI, int OpNo, raw_ostream &O);
void printJumpTable(const MachineInstr *MI, int OpNo, raw_ostream &O);
void printConstantPool(const MachineInstr *MI, int OpNo, raw_ostream &O);
static const char *getRegisterName(unsigned RegNo);
#if 0
void EmitStartOfAsmFile(Module &M);
#endif
};
} // end of llvm namespace
#endif
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