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annotate lib/MC/MCInstPrinter.cpp @ 95:afa8332a0e37 LLVM3.8

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LLVM 3.8
author Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
date Tue, 13 Oct 2015 17:48:58 +0900
parents 60c9769439b8
children 803732b1fca8
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 //===-- MCInstPrinter.cpp - Convert an MCInst to target assembly syntax ---===//
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2 //
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3 // The LLVM Compiler Infrastructure
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4 //
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5 // This file is distributed under the University of Illinois Open Source
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6 // License. See LICENSE.TXT for details.
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7 //
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8 //===----------------------------------------------------------------------===//
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9
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10 #include "llvm/MC/MCInstPrinter.h"
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11 #include "llvm/ADT/StringRef.h"
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12 #include "llvm/MC/MCAsmInfo.h"
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13 #include "llvm/MC/MCInstrInfo.h"
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14 #include "llvm/Support/ErrorHandling.h"
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15 #include "llvm/Support/Format.h"
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16 #include "llvm/Support/raw_ostream.h"
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17 using namespace llvm;
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18
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19 void llvm::dumpBytes(ArrayRef<uint8_t> bytes, raw_ostream &OS) {
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20 static const char hex_rep[] = "0123456789abcdef";
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21 for (char i: bytes) {
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22 OS << hex_rep[(i & 0xF0) >> 4];
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23 OS << hex_rep[i & 0xF];
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24 OS << ' ';
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25 }
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26 }
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27
0
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28 MCInstPrinter::~MCInstPrinter() {
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29 }
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30
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31 /// getOpcodeName - Return the name of the specified opcode enum (e.g.
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32 /// "MOV32ri") or empty if we can't resolve it.
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33 StringRef MCInstPrinter::getOpcodeName(unsigned Opcode) const {
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34 return MII.getName(Opcode);
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35 }
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36
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37 void MCInstPrinter::printRegName(raw_ostream &OS, unsigned RegNo) const {
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38 llvm_unreachable("Target should implement this");
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39 }
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40
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41 void MCInstPrinter::printAnnotation(raw_ostream &OS, StringRef Annot) {
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42 if (!Annot.empty()) {
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43 if (CommentStream) {
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44 (*CommentStream) << Annot;
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45 // By definition (see MCInstPrinter.h), CommentStream must end with
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46 // a newline after each comment.
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47 if (Annot.back() != '\n')
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48 (*CommentStream) << '\n';
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49 } else
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50 OS << " " << MAI.getCommentString() << " " << Annot;
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51 }
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52 }
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53
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54 /// Utility functions to make adding mark ups simpler.
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55 StringRef MCInstPrinter::markup(StringRef s) const {
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56 if (getUseMarkup())
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57 return s;
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58 else
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59 return "";
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60 }
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61 StringRef MCInstPrinter::markup(StringRef a, StringRef b) const {
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62 if (getUseMarkup())
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63 return a;
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64 else
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65 return b;
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66 }
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67
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68 // For asm-style hex (e.g. 0ffh) the first digit always has to be a number.
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69 static bool needsLeadingZero(uint64_t Value)
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70 {
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71 while(Value)
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72 {
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73 uint64_t digit = (Value >> 60) & 0xf;
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74 if (digit != 0)
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75 return (digit >= 0xa);
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76 Value <<= 4;
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77 }
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78 return false;
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79 }
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80
83
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81 format_object<int64_t> MCInstPrinter::formatDec(int64_t Value) const {
0
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82 return format("%" PRId64, Value);
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83 }
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84
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85 format_object<int64_t> MCInstPrinter::formatHex(int64_t Value) const {
0
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86 switch(PrintHexStyle) {
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87 case HexStyle::C:
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88 if (Value < 0)
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89 return format("-0x%" PRIx64, -Value);
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90 else
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91 return format("0x%" PRIx64, Value);
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92 case HexStyle::Asm:
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93 if (Value < 0) {
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94 if (needsLeadingZero((uint64_t)(-Value)))
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95 return format("-0%" PRIx64 "h", -Value);
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96 else
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97 return format("-%" PRIx64 "h", -Value);
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98 } else {
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99 if (needsLeadingZero((uint64_t)(Value)))
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100 return format("0%" PRIx64 "h", Value);
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101 else
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102 return format("%" PRIx64 "h", Value);
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103 }
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104 }
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105 llvm_unreachable("unsupported print style");
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106 }
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107
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108 format_object<uint64_t> MCInstPrinter::formatHex(uint64_t Value) const {
0
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109 switch(PrintHexStyle) {
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110 case HexStyle::C:
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111 return format("0x%" PRIx64, Value);
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112 case HexStyle::Asm:
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113 if (needsLeadingZero(Value))
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114 return format("0%" PRIx64 "h", Value);
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115 else
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116 return format("%" PRIx64 "h", Value);
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117 }
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118 llvm_unreachable("unsupported print style");
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119 }