1 //===- MCInstPrinter.cpp - Convert an MCInst to target assembly syntax ----===//
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
7 //===----------------------------------------------------------------------===//
9 #include "llvm/MC/MCInstPrinter.h"
10 #include "llvm/ADT/ArrayRef.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"
22 void llvm::dumpBytes(ArrayRef<uint8_t> bytes, raw_ostream &OS) {
23 static const char hex_rep[] = "0123456789abcdef";
30 OS << hex_rep[(i & 0xF0) >> 4];
31 OS << hex_rep[i & 0xF];
35 MCInstPrinter::~MCInstPrinter() = default;
37 /// getOpcodeName - Return the name of the specified opcode enum (e.g.
38 /// "MOV32ri") or empty if we can't resolve it.
39 StringRef MCInstPrinter::getOpcodeName(unsigned Opcode) const {
40 return MII.getName(Opcode);
43 void MCInstPrinter::printRegName(raw_ostream &OS, unsigned RegNo) const {
44 llvm_unreachable("Target should implement this");
47 void MCInstPrinter::printAnnotation(raw_ostream &OS, StringRef Annot) {
50 (*CommentStream) << Annot;
51 // By definition (see MCInstPrinter.h), CommentStream must end with
52 // a newline after each comment.
53 if (Annot.back() != '\n')
54 (*CommentStream) << '\n';
56 OS << " " << MAI.getCommentString() << " " << Annot;
60 /// Utility functions to make adding mark ups simpler.
61 StringRef MCInstPrinter::markup(StringRef s) const {
67 StringRef MCInstPrinter::markup(StringRef a, StringRef b) const {
74 // For asm-style hex (e.g. 0ffh) the first digit always has to be a number.
75 static bool needsLeadingZero(uint64_t Value)
79 uint64_t digit = (Value >> 60) & 0xf;
81 return (digit >= 0xa);
87 format_object<int64_t> MCInstPrinter::formatDec(int64_t Value) const {
88 return format("%" PRId64, Value);
91 format_object<int64_t> MCInstPrinter::formatHex(int64_t Value) const {
92 switch(PrintHexStyle) {
95 return format("-0x%" PRIx64, -Value);
97 return format("0x%" PRIx64, Value);
100 if (needsLeadingZero((uint64_t)(-Value)))
101 return format("-0%" PRIx64 "h", -Value);
103 return format("-%" PRIx64 "h", -Value);
105 if (needsLeadingZero((uint64_t)(Value)))
106 return format("0%" PRIx64 "h", Value);
108 return format("%" PRIx64 "h", Value);
111 llvm_unreachable("unsupported print style");
114 format_object<uint64_t> MCInstPrinter::formatHex(uint64_t Value) const {
115 switch(PrintHexStyle) {
117 return format("0x%" PRIx64, Value);
119 if (needsLeadingZero(Value))
120 return format("0%" PRIx64 "h", Value);
122 return format("%" PRIx64 "h", Value);
124 llvm_unreachable("unsupported print style");