1//===- MC/MCAsmInfoXCOFF.cpp - XCOFF asm properties ------------ *- C++ -*-===//
2//
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
6//
7//===----------------------------------------------------------------------===//
8
9#include "llvm/MC/MCAsmInfoXCOFF.h"
10#include "llvm/ADT/StringExtras.h"
11#include "llvm/Support/CommandLine.h"
12
13using namespace llvm;
14
15namespace llvm {
16extern cl::opt<cl::boolOrDefault> UseLEB128Directives;
17}
18
19void MCAsmInfoXCOFF::anchor() {}
20
21MCAsmInfoXCOFF::MCAsmInfoXCOFF() {
22  IsLittleEndian = false;
23  HasVisibilityOnlyWithLinkage = true;
24  HasBasenameOnlyForFileDirective = false;
25  HasFourStringsDotFile = true;
26
27  // For XCOFF, string constant consists of any number of characters enclosed in
28  // "" (double quotation marks).
29  HasPairedDoubleQuoteStringConstants = true;
30
31  PrivateGlobalPrefix = "L..";
32  PrivateLabelPrefix = "L..";
33  SupportsQuotedNames = false;
34  UseDotAlignForAlignment = true;
35  UsesDwarfFileAndLocDirectives = false;
36  DwarfSectionSizeRequired = false;
37  if (UseLEB128Directives == cl::BOU_UNSET)
38    HasLEB128Directives = false;
39  ZeroDirective = "\t.space\t";
40  ZeroDirectiveSupportsNonZeroValue = false;
41  AsciiDirective = nullptr; // not supported
42  AscizDirective = nullptr; // not supported
43  ByteListDirective = "\t.byte\t";
44  PlainStringDirective = "\t.string\t";
45  CharacterLiteralSyntax = ACLS_SingleQuotePrefix;
46
47  // Use .vbyte for data definition to avoid directives that apply an implicit
48  // alignment.
49  Data16bitsDirective = "\t.vbyte\t2, ";
50  Data32bitsDirective = "\t.vbyte\t4, ";
51
52  COMMDirectiveAlignmentIsInBytes = false;
53  LCOMMDirectiveAlignmentType = LCOMM::Log2Alignment;
54  HasDotTypeDotSizeDirective = false;
55  UseIntegratedAssembler = false;
56  ParseInlineAsmUsingAsmParser = true;
57  NeedsFunctionDescriptors = true;
58
59  ExceptionsType = ExceptionHandling::AIX;
60}
61
62bool MCAsmInfoXCOFF::isAcceptableChar(char C) const {
63  // QualName is allowed for a MCSymbolXCOFF, and
64  // QualName contains '[' and ']'.
65  if (C == '[' || C == ']')
66    return true;
67
68  // For AIX assembler, symbols may consist of numeric digits,
69  // underscores, periods, uppercase or lowercase letters, or
70  // any combination of these.
71  return isAlnum(C) || C == '_' || C == '.';
72}
73