1 //===-- PPCInstPrinter.cpp - Convert PPC 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 PPC MCInst to a .s file.
12 //===----------------------------------------------------------------------===//
14 #define DEBUG_TYPE "asm-printer"
15 #include "PPCInstPrinter.h"
16 #include "llvm/MC/MCExpr.h"
17 #include "llvm/MC/MCInst.h"
18 //#include "llvm/MC/MCAsmInfo.h"
19 //#include "llvm/ADT/StringExtras.h"
20 #include "llvm/Support/raw_ostream.h"
22 #include "PPCGenRegisterNames.inc"
23 #include "PPCGenInstrNames.inc"
26 #define GET_INSTRUCTION_NAME
27 #define PPCAsmPrinter PPCInstPrinter
28 #define MachineInstr MCInst
29 #include "PPCGenAsmWriter.inc"
31 StringRef PPCInstPrinter::getOpcodeName(unsigned Opcode) const {
32 return getInstructionName(Opcode);
36 void PPCInstPrinter::printInst(const MCInst *MI, raw_ostream &O) {
39 printInstruction(MI, O);
42 void PPCInstPrinter::printS5ImmOperand(const MCInst *MI, unsigned OpNo,
44 char Value = MI->getOperand(OpNo).getImm();
45 Value = (Value << (32-5)) >> (32-5);
49 void PPCInstPrinter::printU5ImmOperand(const MCInst *MI, unsigned OpNo,
51 unsigned char Value = MI->getOperand(OpNo).getImm();
52 assert(Value <= 31 && "Invalid u5imm argument!");
53 O << (unsigned int)Value;
56 void PPCInstPrinter::printU6ImmOperand(const MCInst *MI, unsigned OpNo,
58 unsigned char Value = MI->getOperand(OpNo).getImm();
59 assert(Value <= 63 && "Invalid u6imm argument!");
60 O << (unsigned int)Value;
63 void PPCInstPrinter::printS16ImmOperand(const MCInst *MI, unsigned OpNo,
65 O << (short)MI->getOperand(OpNo).getImm();
68 void PPCInstPrinter::printU16ImmOperand(const MCInst *MI, unsigned OpNo,
70 O << (unsigned short)MI->getOperand(OpNo).getImm();
73 void PPCInstPrinter::printS16X4ImmOperand(const MCInst *MI, unsigned OpNo,
75 if (MI->getOperand(OpNo).isImm()) {
76 O << (short)(MI->getOperand(OpNo).getImm()*4);
80 assert(0 && "Unhandled operand");
83 printOp(MI->getOperand(OpNo), O);
84 if (TM.getRelocationModel() == Reloc::PIC_)
85 O << "-\"L" << getFunctionNumber() << "$pb\")";
92 /// stripRegisterPrefix - This method strips the character prefix from a
93 /// register name so that only the number is left. Used by for linux asm.
94 const char *stripRegisterPrefix(const char *RegName) {
98 case 'v': return RegName + 1;
99 case 'c': if (RegName[1] == 'r') return RegName + 2;
105 void PPCInstPrinter::printOperand(const MCInst *MI, unsigned OpNo,
107 const MCOperand &Op = MI->getOperand(OpNo);
109 const char *RegName = getRegisterName(Op.getReg());
110 // The linux and AIX assembler does not take register prefixes.
111 if (!isDarwinSyntax())
112 RegName = stripRegisterPrefix(RegName);
123 assert(Op.isExpr() && "unknown operand kind in printOperand");