1 //===-- MSP430InstPrinter.cpp - Convert MSP430 MCInst to assembly syntax --===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This class prints an MSP430 MCInst to a .s file.
12 //===----------------------------------------------------------------------===//
14 #define DEBUG_TYPE "asm-printer"
16 #include "MSP430InstPrinter.h"
17 #include "llvm/MC/MCInst.h"
18 #include "llvm/MC/MCAsmInfo.h"
19 #include "llvm/MC/MCExpr.h"
20 #include "llvm/Support/ErrorHandling.h"
21 #include "llvm/Support/FormattedStream.h"
25 // Include the auto-generated portion of the assembly writer.
26 #include "MSP430GenAsmWriter.inc"
28 void MSP430InstPrinter::printInst(const MCInst *MI, raw_ostream &O) {
29 printInstruction(MI, O);
32 void MSP430InstPrinter::printPCRelImmOperand(const MCInst *MI, unsigned OpNo,
34 const MCOperand &Op = MI->getOperand(OpNo);
38 assert(Op.isExpr() && "unknown pcrel immediate operand");
43 void MSP430InstPrinter::printOperand(const MCInst *MI, unsigned OpNo,
44 raw_ostream &O, const char *Modifier) {
45 assert((Modifier == 0 || Modifier[0] == 0) && "No modifiers supported");
46 const MCOperand &Op = MI->getOperand(OpNo);
48 O << getRegisterName(Op.getReg());
49 } else if (Op.isImm()) {
50 O << '#' << Op.getImm();
52 assert(Op.isExpr() && "unknown operand kind in printOperand");
53 O << '#' << *Op.getExpr();
57 void MSP430InstPrinter::printSrcMemOperand(const MCInst *MI, unsigned OpNo,
59 const char *Modifier) {
60 const MCOperand &Base = MI->getOperand(OpNo);
61 const MCOperand &Disp = MI->getOperand(OpNo+1);
63 // Print displacement first
65 // If the global address expression is a part of displacement field with a
66 // register base, we should not emit any prefix symbol here, e.g.
70 // Otherwise (!) msp430-as will silently miscompile the output :(
77 assert(Disp.isImm() && "Expected immediate in displacement field");
81 // Print register base field
83 O << '(' << getRegisterName(Base.getReg()) << ')';
86 void MSP430InstPrinter::printCCOperand(const MCInst *MI, unsigned OpNo,
88 unsigned CC = MI->getOperand(OpNo).getImm();
92 llvm_unreachable("Unsupported CC code");
94 case MSP430CC::COND_E:
97 case MSP430CC::COND_NE:
100 case MSP430CC::COND_HS:
103 case MSP430CC::COND_LO:
106 case MSP430CC::COND_GE:
109 case MSP430CC::COND_L: