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 19 void MCAsmInfoXCOFF::anchor() {} 20 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 62 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