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 MCInstPrinter::~MCInstPrinter() {
22 /// getOpcodeName - Return the name of the specified opcode enum (e.g.
23 /// "MOV32ri") or empty if we can't resolve it.
24 StringRef MCInstPrinter::getOpcodeName(unsigned Opcode) const {
25 return MII.getName(Opcode);
28 void MCInstPrinter::printRegName(raw_ostream &OS, unsigned RegNo) const {
29 llvm_unreachable("Target should implement this");
32 void MCInstPrinter::printAnnotation(raw_ostream &OS, StringRef Annot) {
35 (*CommentStream) << Annot;
37 OS << " " << MAI.getCommentString() << " " << Annot;
41 /// Utility functions to make adding mark ups simpler.
42 StringRef MCInstPrinter::markup(StringRef s) const {
48 StringRef MCInstPrinter::markup(StringRef a, StringRef b) const {
55 // For asm-style hex (e.g. 0ffh) the first digit always has to be a number.
56 static bool needsLeadingZero(uint64_t Value)
60 uint64_t digit = (Value >> 60) & 0xf;
62 return (digit >= 0xa);
68 format_object1<int64_t> MCInstPrinter::formatDec(const int64_t Value) const {
69 return format("%" PRId64, Value);
72 format_object1<int64_t> MCInstPrinter::formatHex(const int64_t Value) const {
73 switch(PrintHexStyle) {
76 return format("-0x%" PRIx64, -Value);
78 return format("0x%" PRIx64, Value);
81 if (needsLeadingZero((uint64_t)(-Value)))
82 return format("-0%" PRIx64 "h", -Value);
84 return format("-%" PRIx64 "h", -Value);
86 if (needsLeadingZero((uint64_t)(Value)))
87 return format("0%" PRIx64 "h", Value);
89 return format("%" PRIx64 "h", Value);
92 llvm_unreachable("unsupported print style");
95 format_object1<uint64_t> MCInstPrinter::formatHex(const uint64_t Value) const {
96 switch(PrintHexStyle) {
98 return format("0x%" PRIx64, Value);
100 if (needsLeadingZero(Value))
101 return format("0%" PRIx64 "h", Value);
103 return format("%" PRIx64 "h", Value);
105 llvm_unreachable("unsupported print style");