llvm-6502/lib/Target/MSP430/MSP430AsmPrinter.cpp
Chandler Carruth 0b8c9a80f2 Move all of the header files which are involved in modelling the LLVM IR
into their new header subdirectory: include/llvm/IR. This matches the
directory structure of lib, and begins to correct a long standing point
of file layout clutter in LLVM.

There are still more header files to move here, but I wanted to handle
them in separate commits to make tracking what files make sense at each
layer easier.

The only really questionable files here are the target intrinsic
tablegen files. But that's a battle I'd rather not fight today.

I've updated both CMake and Makefile build systems (I think, and my
tests think, but I may have missed something).

I've also re-sorted the includes throughout the project. I'll be
committing updates to Clang, DragonEgg, and Polly momentarily.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171366 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-02 11:36:10 +00:00

168 lines
5.5 KiB
C++

//===-- 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.
//
//===----------------------------------------------------------------------===//
#define DEBUG_TYPE "asm-printer"
#include "MSP430.h"
#include "InstPrinter/MSP430InstPrinter.h"
#include "MSP430InstrInfo.h"
#include "MSP430MCInstLower.h"
#include "MSP430TargetMachine.h"
#include "llvm/Assembly/Writer.h"
#include "llvm/CodeGen/AsmPrinter.h"
#include "llvm/CodeGen/MachineConstantPool.h"
#include "llvm/CodeGen/MachineFunctionPass.h"
#include "llvm/CodeGen/MachineInstr.h"
#include "llvm/CodeGen/MachineModuleInfo.h"
#include "llvm/IR/Constants.h"
#include "llvm/IR/DerivedTypes.h"
#include "llvm/IR/Module.h"
#include "llvm/MC/MCAsmInfo.h"
#include "llvm/MC/MCInst.h"
#include "llvm/MC/MCStreamer.h"
#include "llvm/MC/MCSymbol.h"
#include "llvm/Support/TargetRegistry.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/Target/Mangler.h"
using namespace llvm;
namespace {
class MSP430AsmPrinter : public AsmPrinter {
public:
MSP430AsmPrinter(TargetMachine &TM, MCStreamer &Streamer)
: AsmPrinter(TM, Streamer) {}
virtual const char *getPassName() const {
return "MSP430 Assembly Printer";
}
void printOperand(const MachineInstr *MI, int OpNum,
raw_ostream &O, const char* Modifier = 0);
void printSrcMemOperand(const MachineInstr *MI, int OpNum,
raw_ostream &O);
bool PrintAsmOperand(const MachineInstr *MI, unsigned OpNo,
unsigned AsmVariant, const char *ExtraCode,
raw_ostream &O);
bool PrintAsmMemoryOperand(const MachineInstr *MI,
unsigned OpNo, unsigned AsmVariant,
const char *ExtraCode, raw_ostream &O);
void EmitInstruction(const MachineInstr *MI);
};
} // 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()) {
default: llvm_unreachable("Not implemented yet!");
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:
O << *MO.getMBB()->getSymbol();
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 << '+';
O << *Mang->getSymbol(MO.getGlobal());
if (Offset)
O << ')';
return;
}
case MachineOperand::MO_ExternalSymbol: {
bool isMemOp = Modifier && !strcmp(Modifier, "mem");
O << (isMemOp ? '&' : '#');
O << MAI->getGlobalPrefix() << MO.getSymbolName();
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) {
MSP430MCInstLower MCInstLowering(OutContext, *this);
MCInst TmpInst;
MCInstLowering.Lower(MI, TmpInst);
OutStreamer.EmitInstruction(TmpInst);
}
// Force static initialization.
extern "C" void LLVMInitializeMSP430AsmPrinter() {
RegisterAsmPrinter<MSP430AsmPrinter> X(TheMSP430Target);
}