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
13 using namespace llvm;
14
15 namespace llvm {
16 extern cl::opt<cl::boolOrDefault> UseLEB128Directives;
17 }
18
anchor()19 void MCAsmInfoXCOFF::anchor() {}
20
MCAsmInfoXCOFF()21 MCAsmInfoXCOFF::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
isAcceptableChar(char C) const62 bool 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