1 //===-- VEInstPrinter.cpp - Convert VE MCInst to assembly syntax -----------==//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 //
9 // This class prints an VE MCInst to a .s file.
10 //
11 //===----------------------------------------------------------------------===//
12
13 #include "VEInstPrinter.h"
14 #include "VE.h"
15 #include "llvm/MC/MCExpr.h"
16 #include "llvm/MC/MCInst.h"
17 #include "llvm/MC/MCRegisterInfo.h"
18 #include "llvm/MC/MCSubtargetInfo.h"
19 #include "llvm/MC/MCSymbol.h"
20 #include "llvm/Support/raw_ostream.h"
21
22 using namespace llvm;
23
24 #define DEBUG_TYPE "ve-asmprinter"
25
26 // The generated AsmMatcher VEGenAsmWriter uses "VE" as the target
27 // namespace.
28 namespace llvm {
29 namespace VE {
30 using namespace VE;
31 }
32 } // namespace llvm
33
34 #define GET_INSTRUCTION_NAME
35 #define PRINT_ALIAS_INSTR
36 #include "VEGenAsmWriter.inc"
37
printRegName(raw_ostream & OS,unsigned RegNo) const38 void VEInstPrinter::printRegName(raw_ostream &OS, unsigned RegNo) const {
39 OS << '%' << StringRef(getRegisterName(RegNo)).lower();
40 }
41
printInst(const MCInst * MI,uint64_t Address,StringRef Annot,const MCSubtargetInfo & STI,raw_ostream & OS)42 void VEInstPrinter::printInst(const MCInst *MI, uint64_t Address,
43 StringRef Annot, const MCSubtargetInfo &STI,
44 raw_ostream &OS) {
45 if (!printAliasInstr(MI, STI, OS))
46 printInstruction(MI, Address, STI, OS);
47 printAnnotation(OS, Annot);
48 }
49
printOperand(const MCInst * MI,int opNum,const MCSubtargetInfo & STI,raw_ostream & O)50 void VEInstPrinter::printOperand(const MCInst *MI, int opNum,
51 const MCSubtargetInfo &STI, raw_ostream &O) {
52 const MCOperand &MO = MI->getOperand(opNum);
53
54 if (MO.isReg()) {
55 printRegName(O, MO.getReg());
56 return;
57 }
58
59 if (MO.isImm()) {
60 switch (MI->getOpcode()) {
61 default:
62 // Expects signed 32bit literals
63 assert(isInt<32>(MO.getImm()) && "Immediate too large");
64 int32_t TruncatedImm = static_cast<int32_t>(MO.getImm());
65 O << TruncatedImm;
66 return;
67 }
68 }
69
70 assert(MO.isExpr() && "Unknown operand kind in printOperand");
71 MO.getExpr()->print(O, &MAI);
72 }
73
printMemASXOperand(const MCInst * MI,int opNum,const MCSubtargetInfo & STI,raw_ostream & O,const char * Modifier)74 void VEInstPrinter::printMemASXOperand(const MCInst *MI, int opNum,
75 const MCSubtargetInfo &STI,
76 raw_ostream &O, const char *Modifier) {
77 // If this is an ADD operand, emit it like normal operands.
78 if (Modifier && !strcmp(Modifier, "arith")) {
79 printOperand(MI, opNum, STI, O);
80 O << ", ";
81 printOperand(MI, opNum + 1, STI, O);
82 return;
83 }
84
85 const MCOperand &MO = MI->getOperand(opNum + 1);
86 if (!MO.isImm() || MO.getImm() != 0) {
87 printOperand(MI, opNum + 1, STI, O);
88 }
89 O << "(,";
90 printOperand(MI, opNum, STI, O);
91 O << ")";
92 }
93
printMemASOperand(const MCInst * MI,int opNum,const MCSubtargetInfo & STI,raw_ostream & O,const char * Modifier)94 void VEInstPrinter::printMemASOperand(const MCInst *MI, int opNum,
95 const MCSubtargetInfo &STI,
96 raw_ostream &O, const char *Modifier) {
97 // If this is an ADD operand, emit it like normal operands.
98 if (Modifier && !strcmp(Modifier, "arith")) {
99 printOperand(MI, opNum, STI, O);
100 O << ", ";
101 printOperand(MI, opNum + 1, STI, O);
102 return;
103 }
104
105 const MCOperand &MO = MI->getOperand(opNum + 1);
106 if (!MO.isImm() || MO.getImm() != 0) {
107 printOperand(MI, opNum + 1, STI, O);
108 }
109 O << "(";
110 printOperand(MI, opNum, STI, O);
111 O << ")";
112 }
113
printCCOperand(const MCInst * MI,int opNum,const MCSubtargetInfo & STI,raw_ostream & O)114 void VEInstPrinter::printCCOperand(const MCInst *MI, int opNum,
115 const MCSubtargetInfo &STI, raw_ostream &O) {
116 int CC = (int)MI->getOperand(opNum).getImm();
117 O << VECondCodeToString((VECC::CondCodes)CC);
118 }
119