1 //===-- MCInstPrinter.cpp - Convert an MCInst to target 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 #include "llvm/MC/MCInstPrinter.h"
11 #include "llvm/ADT/StringRef.h"
12 #include "llvm/MC/MCAsmInfo.h"
13 #include "llvm/MC/MCInstrInfo.h"
14 #include "llvm/Support/ErrorHandling.h"
15 #include "llvm/Support/Format.h"
16 #include "llvm/Support/raw_ostream.h"
19 void llvm::dumpBytes(ArrayRef<uint8_t> bytes, raw_ostream &OS) {
20 static const char hex_rep[] = "0123456789abcdef";
22 OS << hex_rep[(i & 0xF0) >> 4];
23 OS << hex_rep[i & 0xF];
28 MCInstPrinter::~MCInstPrinter() {
31 /// getOpcodeName - Return the name of the specified opcode enum (e.g.
32 /// "MOV32ri") or empty if we can't resolve it.
33 StringRef MCInstPrinter::getOpcodeName(unsigned Opcode) const {
34 return MII.getName(Opcode);
37 void MCInstPrinter::printRegName(raw_ostream &OS, unsigned RegNo) const {
38 llvm_unreachable("Target should implement this");
41 void MCInstPrinter::printAnnotation(raw_ostream &OS, StringRef Annot) {
44 (*CommentStream) << Annot;
45 // By definition (see MCInstPrinter.h), CommentStream must end with
46 // a newline after each comment.
47 if (Annot.back() != '\n')
48 (*CommentStream) << '\n';
50 OS << " " << MAI.getCommentString() << " " << Annot;
54 /// Utility functions to make adding mark ups simpler.
55 StringRef MCInstPrinter::markup(StringRef s) const {
61 StringRef MCInstPrinter::markup(StringRef a, StringRef b) const {
68 // For asm-style hex (e.g. 0ffh) the first digit always has to be a number.
69 static bool needsLeadingZero(uint64_t Value)
73 uint64_t digit = (Value >> 60) & 0xf;
75 return (digit >= 0xa);
81 format_object<int64_t> MCInstPrinter::formatDec(int64_t Value) const {
82 return format("%" PRId64, Value);
85 format_object<int64_t> MCInstPrinter::formatHex(int64_t Value) const {
86 switch(PrintHexStyle) {
89 return format("-0x%" PRIx64, -Value);
91 return format("0x%" PRIx64, Value);
94 if (needsLeadingZero((uint64_t)(-Value)))
95 return format("-0%" PRIx64 "h", -Value);
97 return format("-%" PRIx64 "h", -Value);
99 if (needsLeadingZero((uint64_t)(Value)))
100 return format("0%" PRIx64 "h", Value);
102 return format("%" PRIx64 "h", Value);
105 llvm_unreachable("unsupported print style");
108 format_object<uint64_t> MCInstPrinter::formatHex(uint64_t Value) const {
109 switch(PrintHexStyle) {
111 return format("0x%" PRIx64, Value);
113 if (needsLeadingZero(Value))
114 return format("0%" PRIx64 "h", Value);
116 return format("%" PRIx64 "h", Value);
118 llvm_unreachable("unsupported print style");