1 //===- lib/MC/MCInst.cpp - MCInst implementation --------------------------===//
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 #include "llvm/MC/MCInst.h"
10 #include "llvm/Config/llvm-config.h"
11 #include "llvm/MC/MCExpr.h"
12 #include "llvm/MC/MCInstPrinter.h"
13 #include "llvm/MC/MCRegisterInfo.h"
14 #include "llvm/Support/Casting.h"
15 #include "llvm/Support/Compiler.h"
16 #include "llvm/Support/Debug.h"
17 #include "llvm/Support/raw_ostream.h"
18 
19 using namespace llvm;
20 
21 void MCOperand::print(raw_ostream &OS, const MCRegisterInfo *RegInfo) const {
22   OS << "<MCOperand ";
23   if (!isValid())
24     OS << "INVALID";
25   else if (isReg()) {
26     OS << "Reg:";
27     if (RegInfo)
28       OS << RegInfo->getName(getReg());
29     else
30       OS << getReg();
31   } else if (isImm())
32     OS << "Imm:" << getImm();
33   else if (isSFPImm())
34     OS << "SFPImm:" << bit_cast<float>(getSFPImm());
35   else if (isDFPImm())
36     OS << "DFPImm:" << bit_cast<double>(getDFPImm());
37   else if (isExpr()) {
38     OS << "Expr:(" << *getExpr() << ")";
39   } else if (isInst()) {
40     OS << "Inst:(";
41     getInst()->print(OS, RegInfo);
42     OS << ")";
43   } else
44     OS << "UNDEFINED";
45   OS << ">";
46 }
47 
48 bool MCOperand::evaluateAsConstantImm(int64_t &Imm) const {
49   if (isImm()) {
50     Imm = getImm();
51     return true;
52   }
53   return false;
54 }
55 
56 bool MCOperand::isBareSymbolRef() const {
57   assert(isExpr() &&
58          "isBareSymbolRef expects only expressions");
59   const MCExpr *Expr = getExpr();
60   MCExpr::ExprKind Kind = getExpr()->getKind();
61   return Kind == MCExpr::SymbolRef &&
62     cast<MCSymbolRefExpr>(Expr)->getKind() == MCSymbolRefExpr::VK_None;
63 }
64 
65 #if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
66 LLVM_DUMP_METHOD void MCOperand::dump() const {
67   print(dbgs());
68   dbgs() << "\n";
69 }
70 #endif
71 
72 void MCInst::print(raw_ostream &OS, const MCRegisterInfo *RegInfo) const {
73   OS << "<MCInst " << getOpcode();
74   for (unsigned i = 0, e = getNumOperands(); i != e; ++i) {
75     OS << " ";
76     getOperand(i).print(OS, RegInfo);
77   }
78   OS << ">";
79 }
80 
81 void MCInst::dump_pretty(raw_ostream &OS, const MCInstPrinter *Printer,
82                          StringRef Separator,
83                          const MCRegisterInfo *RegInfo) const {
84   StringRef InstName = Printer ? Printer->getOpcodeName(getOpcode()) : "";
85   dump_pretty(OS, InstName, Separator, RegInfo);
86 }
87 
88 void MCInst::dump_pretty(raw_ostream &OS, StringRef Name, StringRef Separator,
89                          const MCRegisterInfo *RegInfo) const {
90   OS << "<MCInst #" << getOpcode();
91 
92   // Show the instruction opcode name if we have it.
93   if (!Name.empty())
94     OS << ' ' << Name;
95 
96   for (unsigned i = 0, e = getNumOperands(); i != e; ++i) {
97     OS << Separator;
98     getOperand(i).print(OS, RegInfo);
99   }
100   OS << ">";
101 }
102 
103 #if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
104 LLVM_DUMP_METHOD void MCInst::dump() const {
105   print(dbgs());
106   dbgs() << "\n";
107 }
108 #endif
109