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to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636
122 lines
3.4 KiB
C++
122 lines
3.4 KiB
C++
//===- MCInstPrinter.cpp - Convert an MCInst to target assembly syntax ----===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/MC/MCInstPrinter.h"
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#include "llvm/ADT/ArrayRef.h"
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#include "llvm/ADT/StringRef.h"
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#include "llvm/MC/MCAsmInfo.h"
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#include "llvm/MC/MCInstrInfo.h"
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#include "llvm/Support/ErrorHandling.h"
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#include "llvm/Support/Format.h"
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#include "llvm/Support/raw_ostream.h"
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#include <cinttypes>
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#include <cstdint>
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using namespace llvm;
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void llvm::dumpBytes(ArrayRef<uint8_t> bytes, raw_ostream &OS) {
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static const char hex_rep[] = "0123456789abcdef";
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for (char i: bytes) {
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OS << hex_rep[(i & 0xF0) >> 4];
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OS << hex_rep[i & 0xF];
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OS << ' ';
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}
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}
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MCInstPrinter::~MCInstPrinter() = default;
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/// getOpcodeName - Return the name of the specified opcode enum (e.g.
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/// "MOV32ri") or empty if we can't resolve it.
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StringRef MCInstPrinter::getOpcodeName(unsigned Opcode) const {
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return MII.getName(Opcode);
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}
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void MCInstPrinter::printRegName(raw_ostream &OS, unsigned RegNo) const {
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llvm_unreachable("Target should implement this");
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}
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void MCInstPrinter::printAnnotation(raw_ostream &OS, StringRef Annot) {
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if (!Annot.empty()) {
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if (CommentStream) {
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(*CommentStream) << Annot;
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// By definition (see MCInstPrinter.h), CommentStream must end with
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// a newline after each comment.
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if (Annot.back() != '\n')
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(*CommentStream) << '\n';
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} else
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OS << " " << MAI.getCommentString() << " " << Annot;
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}
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}
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/// Utility functions to make adding mark ups simpler.
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StringRef MCInstPrinter::markup(StringRef s) const {
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if (getUseMarkup())
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return s;
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else
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return "";
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}
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StringRef MCInstPrinter::markup(StringRef a, StringRef b) const {
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if (getUseMarkup())
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return a;
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else
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return b;
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}
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// For asm-style hex (e.g. 0ffh) the first digit always has to be a number.
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static bool needsLeadingZero(uint64_t Value)
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{
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while (Value)
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{
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uint64_t digit = (Value >> 60) & 0xf;
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if (digit != 0)
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return (digit >= 0xa);
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Value <<= 4;
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}
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return false;
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}
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format_object<int64_t> MCInstPrinter::formatDec(int64_t Value) const {
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return format("%" PRId64, Value);
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}
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format_object<int64_t> MCInstPrinter::formatHex(int64_t Value) const {
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switch(PrintHexStyle) {
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case HexStyle::C:
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if (Value < 0)
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return format("-0x%" PRIx64, -Value);
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else
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return format("0x%" PRIx64, Value);
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case HexStyle::Asm:
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if (Value < 0) {
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if (needsLeadingZero((uint64_t)(-Value)))
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return format("-0%" PRIx64 "h", -Value);
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else
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return format("-%" PRIx64 "h", -Value);
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} else {
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if (needsLeadingZero((uint64_t)(Value)))
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return format("0%" PRIx64 "h", Value);
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else
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return format("%" PRIx64 "h", Value);
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}
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}
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llvm_unreachable("unsupported print style");
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}
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format_object<uint64_t> MCInstPrinter::formatHex(uint64_t Value) const {
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switch(PrintHexStyle) {
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case HexStyle::C:
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return format("0x%" PRIx64, Value);
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case HexStyle::Asm:
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if (needsLeadingZero(Value))
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return format("0%" PRIx64 "h", Value);
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else
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return format("%" PRIx64 "h", Value);
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}
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llvm_unreachable("unsupported print style");
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}
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