1 //===-- ARMMCAsmInfo.cpp - ARM asm properties -----------------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 // 10 // This file contains the declarations of the ARMMCAsmInfo properties. 11 // 12 //===----------------------------------------------------------------------===// 13 14 #include "ARMMCAsmInfo.h" 15 #include "llvm/Support/CommandLine.h" 16 #include "llvm/ADT/Triple.h" 17 18 using namespace llvm; 19 20 void ARMMCAsmInfoDarwin::anchor() { } 21 22 ARMMCAsmInfoDarwin::ARMMCAsmInfoDarwin(StringRef TT) { 23 Triple TheTriple(TT); 24 if ((TheTriple.getArch() == Triple::armeb) || 25 (TheTriple.getArch() == Triple::thumbeb)) 26 IsLittleEndian = false; 27 28 Data64bitsDirective = nullptr; 29 CommentString = "@"; 30 Code16Directive = ".code\t16"; 31 Code32Directive = ".code\t32"; 32 UseDataRegionDirectives = true; 33 34 SupportsDebugInformation = true; 35 36 // Exceptions handling 37 ExceptionsType = ExceptionHandling::SjLj; 38 39 UseIntegratedAssembler = true; 40 } 41 42 void ARMELFMCAsmInfo::anchor() { } 43 44 ARMELFMCAsmInfo::ARMELFMCAsmInfo(StringRef TT) { 45 Triple TheTriple(TT); 46 if ((TheTriple.getArch() == Triple::armeb) || 47 (TheTriple.getArch() == Triple::thumbeb)) 48 IsLittleEndian = false; 49 50 // ".comm align is in bytes but .align is pow-2." 51 AlignmentIsInBytes = false; 52 53 Data64bitsDirective = nullptr; 54 CommentString = "@"; 55 Code16Directive = ".code\t16"; 56 Code32Directive = ".code\t32"; 57 58 HasLEB128 = true; 59 SupportsDebugInformation = true; 60 61 // Exceptions handling 62 switch (TheTriple.getOS()) { 63 case Triple::NetBSD: 64 ExceptionsType = ExceptionHandling::DwarfCFI; 65 break; 66 default: 67 ExceptionsType = ExceptionHandling::ARM; 68 break; 69 } 70 71 // foo(plt) instead of foo@plt 72 UseParensForSymbolVariant = true; 73 74 UseIntegratedAssembler = true; 75 } 76 77 void ARMELFMCAsmInfo::setUseIntegratedAssembler(bool Value) { 78 UseIntegratedAssembler = Value; 79 if (!UseIntegratedAssembler) { 80 // gas doesn't handle VFP register names in cfi directives, 81 // so don't use register names with external assembler. 82 // See https://sourceware.org/bugzilla/show_bug.cgi?id=16694 83 DwarfRegNumForCFI = true; 84 } 85 } 86 87 void ARMCOFFMCAsmInfoMicrosoft::anchor() { } 88 89 ARMCOFFMCAsmInfoMicrosoft::ARMCOFFMCAsmInfoMicrosoft() { 90 AlignmentIsInBytes = false; 91 92 PrivateGlobalPrefix = "$M"; 93 } 94 95 void ARMCOFFMCAsmInfoGNU::anchor() { } 96 97 ARMCOFFMCAsmInfoGNU::ARMCOFFMCAsmInfoGNU() { 98 AlignmentIsInBytes = false; 99 HasSingleParameterDotFile = true; 100 101 CommentString = "@"; 102 Code16Directive = ".code\t16"; 103 Code32Directive = ".code\t32"; 104 PrivateGlobalPrefix = ".L"; 105 106 HasLEB128 = true; 107 SupportsDebugInformation = true; 108 ExceptionsType = ExceptionHandling::None; 109 UseParensForSymbolVariant = true; 110 111 UseIntegratedAssembler = false; 112 DwarfRegNumForCFI = true; 113 } 114 115
