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
26 // For XCOFF, string constant consists of any number of characters enclosed in
27 // "" (double quotation marks).
28 HasPairedDoubleQuoteStringConstants = true;
29
30 PrivateGlobalPrefix = "L..";
31 PrivateLabelPrefix = "L..";
32 SupportsQuotedNames = false;
33 UseDotAlignForAlignment = true;
34 UsesDwarfFileAndLocDirectives = false;
35 DwarfSectionSizeRequired = false;
36 if (UseLEB128Directives == cl::BOU_UNSET)
37 HasLEB128Directives = false;
38 ZeroDirective = "\t.space\t";
39 ZeroDirectiveSupportsNonZeroValue = false;
40 AsciiDirective = nullptr; // not supported
41 AscizDirective = nullptr; // not supported
42 ByteListDirective = "\t.byte\t";
43 PlainStringDirective = "\t.string\t";
44 CharacterLiteralSyntax = ACLS_SingleQuotePrefix;
45
46 // Use .vbyte for data definition to avoid directives that apply an implicit
47 // alignment.
48 Data16bitsDirective = "\t.vbyte\t2, ";
49 Data32bitsDirective = "\t.vbyte\t4, ";
50
51 COMMDirectiveAlignmentIsInBytes = false;
52 LCOMMDirectiveAlignmentType = LCOMM::Log2Alignment;
53 HasDotTypeDotSizeDirective = false;
54 UseIntegratedAssembler = false;
55 NeedsFunctionDescriptors = true;
56
57 ExceptionsType = ExceptionHandling::AIX;
58 }
59
isAcceptableChar(char C) const60 bool MCAsmInfoXCOFF::isAcceptableChar(char C) const {
61 // QualName is allowed for a MCSymbolXCOFF, and
62 // QualName contains '[' and ']'.
63 if (C == '[' || C == ']')
64 return true;
65
66 // For AIX assembler, symbols may consist of numeric digits,
67 // underscores, periods, uppercase or lowercase letters, or
68 // any combination of these.
69 return isAlnum(C) || C == '_' || C == '.';
70 }
71