2010-10-02 09:08:17 +08:00
|
|
|
//===-- MSP430AsmPrinter.cpp - MSP430 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 the MSP430 assembly language.
|
|
|
|
//
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
|
|
|
|
#include "MSP430.h"
|
2012-12-04 00:50:05 +08:00
|
|
|
#include "InstPrinter/MSP430InstPrinter.h"
|
2010-10-02 09:08:17 +08:00
|
|
|
#include "MSP430InstrInfo.h"
|
|
|
|
#include "MSP430MCInstLower.h"
|
|
|
|
#include "MSP430TargetMachine.h"
|
|
|
|
#include "llvm/CodeGen/AsmPrinter.h"
|
|
|
|
#include "llvm/CodeGen/MachineConstantPool.h"
|
2012-12-04 00:50:05 +08:00
|
|
|
#include "llvm/CodeGen/MachineFunctionPass.h"
|
2010-10-02 09:08:17 +08:00
|
|
|
#include "llvm/CodeGen/MachineInstr.h"
|
2012-12-04 00:50:05 +08:00
|
|
|
#include "llvm/CodeGen/MachineModuleInfo.h"
|
2013-01-02 19:36:10 +08:00
|
|
|
#include "llvm/IR/Constants.h"
|
|
|
|
#include "llvm/IR/DerivedTypes.h"
|
2014-01-08 05:19:40 +08:00
|
|
|
#include "llvm/IR/Mangler.h"
|
2013-01-02 19:36:10 +08:00
|
|
|
#include "llvm/IR/Module.h"
|
2011-07-15 07:50:31 +08:00
|
|
|
#include "llvm/MC/MCAsmInfo.h"
|
2010-10-02 09:08:17 +08:00
|
|
|
#include "llvm/MC/MCInst.h"
|
|
|
|
#include "llvm/MC/MCStreamer.h"
|
|
|
|
#include "llvm/MC/MCSymbol.h"
|
2011-08-25 02:08:43 +08:00
|
|
|
#include "llvm/Support/TargetRegistry.h"
|
2010-10-02 09:08:17 +08:00
|
|
|
#include "llvm/Support/raw_ostream.h"
|
|
|
|
using namespace llvm;
|
|
|
|
|
2014-04-22 10:41:26 +08:00
|
|
|
#define DEBUG_TYPE "asm-printer"
|
|
|
|
|
2010-10-02 09:08:17 +08:00
|
|
|
namespace {
|
|
|
|
class MSP430AsmPrinter : public AsmPrinter {
|
|
|
|
public:
|
2015-01-19 04:29:04 +08:00
|
|
|
MSP430AsmPrinter(TargetMachine &TM, std::unique_ptr<MCStreamer> Streamer)
|
|
|
|
: AsmPrinter(TM, std::move(Streamer)) {}
|
2010-10-02 09:08:17 +08:00
|
|
|
|
2016-10-01 10:56:57 +08:00
|
|
|
StringRef getPassName() const override { return "MSP430 Assembly Printer"; }
|
2010-10-02 09:08:17 +08:00
|
|
|
|
|
|
|
void printOperand(const MachineInstr *MI, int OpNum,
|
2014-04-25 13:30:21 +08:00
|
|
|
raw_ostream &O, const char* Modifier = nullptr);
|
2010-10-02 09:08:17 +08:00
|
|
|
void printSrcMemOperand(const MachineInstr *MI, int OpNum,
|
|
|
|
raw_ostream &O);
|
|
|
|
bool PrintAsmOperand(const MachineInstr *MI, unsigned OpNo,
|
|
|
|
unsigned AsmVariant, const char *ExtraCode,
|
2014-04-29 15:58:09 +08:00
|
|
|
raw_ostream &O) override;
|
2010-10-02 09:08:17 +08:00
|
|
|
bool PrintAsmMemoryOperand(const MachineInstr *MI,
|
|
|
|
unsigned OpNo, unsigned AsmVariant,
|
2014-04-29 15:58:09 +08:00
|
|
|
const char *ExtraCode, raw_ostream &O) override;
|
|
|
|
void EmitInstruction(const MachineInstr *MI) override;
|
2010-10-02 09:08:17 +08:00
|
|
|
};
|
|
|
|
} // end of anonymous namespace
|
|
|
|
|
|
|
|
|
|
|
|
void MSP430AsmPrinter::printOperand(const MachineInstr *MI, int OpNum,
|
|
|
|
raw_ostream &O, const char *Modifier) {
|
|
|
|
const MachineOperand &MO = MI->getOperand(OpNum);
|
|
|
|
switch (MO.getType()) {
|
2012-02-07 10:50:20 +08:00
|
|
|
default: llvm_unreachable("Not implemented yet!");
|
2010-10-02 09:08:17 +08:00
|
|
|
case MachineOperand::MO_Register:
|
|
|
|
O << MSP430InstPrinter::getRegisterName(MO.getReg());
|
|
|
|
return;
|
|
|
|
case MachineOperand::MO_Immediate:
|
|
|
|
if (!Modifier || strcmp(Modifier, "nohash"))
|
|
|
|
O << '#';
|
|
|
|
O << MO.getImm();
|
|
|
|
return;
|
|
|
|
case MachineOperand::MO_MachineBasicBlock:
|
2015-06-09 08:31:39 +08:00
|
|
|
MO.getMBB()->getSymbol()->print(O, MAI);
|
2010-10-02 09:08:17 +08:00
|
|
|
return;
|
|
|
|
case MachineOperand::MO_GlobalAddress: {
|
|
|
|
bool isMemOp = Modifier && !strcmp(Modifier, "mem");
|
|
|
|
uint64_t Offset = MO.getOffset();
|
|
|
|
|
|
|
|
// If the global address expression is a part of displacement field with a
|
|
|
|
// register base, we should not emit any prefix symbol here, e.g.
|
|
|
|
// mov.w &foo, r1
|
|
|
|
// vs
|
|
|
|
// mov.w glb(r1), r2
|
|
|
|
// Otherwise (!) msp430-as will silently miscompile the output :(
|
|
|
|
if (!Modifier || strcmp(Modifier, "nohash"))
|
|
|
|
O << (isMemOp ? '&' : '#');
|
|
|
|
if (Offset)
|
|
|
|
O << '(' << Offset << '+';
|
|
|
|
|
2015-06-09 08:31:39 +08:00
|
|
|
getSymbol(MO.getGlobal())->print(O, MAI);
|
2010-10-02 09:08:17 +08:00
|
|
|
|
|
|
|
if (Offset)
|
|
|
|
O << ')';
|
|
|
|
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
void MSP430AsmPrinter::printSrcMemOperand(const MachineInstr *MI, int OpNum,
|
|
|
|
raw_ostream &O) {
|
|
|
|
const MachineOperand &Base = MI->getOperand(OpNum);
|
|
|
|
const MachineOperand &Disp = MI->getOperand(OpNum+1);
|
|
|
|
|
|
|
|
// Print displacement first
|
|
|
|
|
|
|
|
// Imm here is in fact global address - print extra modifier.
|
|
|
|
if (Disp.isImm() && !Base.getReg())
|
|
|
|
O << '&';
|
|
|
|
printOperand(MI, OpNum+1, O, "nohash");
|
|
|
|
|
|
|
|
// Print register base field
|
|
|
|
if (Base.getReg()) {
|
|
|
|
O << '(';
|
|
|
|
printOperand(MI, OpNum, O);
|
|
|
|
O << ')';
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/// PrintAsmOperand - Print out an operand for an inline asm expression.
|
|
|
|
///
|
|
|
|
bool MSP430AsmPrinter::PrintAsmOperand(const MachineInstr *MI, unsigned OpNo,
|
|
|
|
unsigned AsmVariant,
|
|
|
|
const char *ExtraCode, raw_ostream &O) {
|
|
|
|
// Does this asm operand have a single letter operand modifier?
|
|
|
|
if (ExtraCode && ExtraCode[0])
|
|
|
|
return true; // Unknown modifier.
|
|
|
|
|
|
|
|
printOperand(MI, OpNo, O);
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
|
|
|
bool MSP430AsmPrinter::PrintAsmMemoryOperand(const MachineInstr *MI,
|
|
|
|
unsigned OpNo, unsigned AsmVariant,
|
|
|
|
const char *ExtraCode,
|
|
|
|
raw_ostream &O) {
|
|
|
|
if (ExtraCode && ExtraCode[0]) {
|
|
|
|
return true; // Unknown modifier.
|
|
|
|
}
|
|
|
|
printSrcMemOperand(MI, OpNo, O);
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
void MSP430AsmPrinter::EmitInstruction(const MachineInstr *MI) {
|
2012-06-07 02:25:08 +08:00
|
|
|
MSP430MCInstLower MCInstLowering(OutContext, *this);
|
2010-10-02 09:08:17 +08:00
|
|
|
|
|
|
|
MCInst TmpInst;
|
|
|
|
MCInstLowering.Lower(MI, TmpInst);
|
2015-04-25 03:11:51 +08:00
|
|
|
EmitToStreamer(*OutStreamer, TmpInst);
|
2010-10-02 09:08:17 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
// Force static initialization.
|
|
|
|
extern "C" void LLVMInitializeMSP430AsmPrinter() {
|
|
|
|
RegisterAsmPrinter<MSP430AsmPrinter> X(TheMSP430Target);
|
|
|
|
}
|