1 //===-- MCAsmInfoDarwin.cpp - Darwin asm properties -------------*- C++ -*-===// 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 defines target asm properties related what form asm statements 11 // should take in general on Darwin-based targets 12 // 13 //===----------------------------------------------------------------------===// 14 15 #include "llvm/MC/MCAsmInfoDarwin.h" 16 #include "llvm/MC/MCContext.h" 17 #include "llvm/MC/MCExpr.h" 18 #include "llvm/MC/MCStreamer.h" 19 using namespace llvm; 20 21 MCAsmInfoDarwin::MCAsmInfoDarwin() { 22 // Common settings for all Darwin targets. 23 // Syntax: 24 GlobalPrefix = "_"; 25 PrivateGlobalPrefix = "L"; 26 LinkerPrivateGlobalPrefix = "l"; 27 AllowQuotesInName = true; 28 HasSingleParameterDotFile = false; 29 HasSubsectionsViaSymbols = true; 30 31 AlignmentIsInBytes = false; 32 COMMDirectiveAlignmentIsInBytes = false; 33 InlineAsmStart = " InlineAsm Start"; 34 InlineAsmEnd = " InlineAsm End"; 35 36 // Directives: 37 WeakDefDirective = "\t.weak_definition "; 38 WeakRefDirective = "\t.weak_reference "; 39 ZeroDirective = "\t.space\t"; // ".space N" emits N zeros. 40 HasMachoZeroFillDirective = true; // Uses .zerofill 41 HasMachoTBSSDirective = true; // Uses .tbss 42 StructorOutputOrder = Structors::PriorityOrder; 43 HasStaticCtorDtorReferenceInStaticMode = true; 44 45 CodeBegin = "L$start$code$"; 46 DataBegin = "L$start$data$"; 47 JT8Begin = "L$start$jt8$"; 48 JT16Begin = "L$start$jt16$"; 49 JT32Begin = "L$start$jt32$"; 50 SupportsDataRegions = true; 51 52 // FIXME: Darwin 10 and newer don't need this. 53 LinkerRequiresNonEmptyDwarfLines = true; 54 55 // FIXME: Change this once MC is the system assembler. 56 HasAggressiveSymbolFolding = false; 57 58 HiddenVisibilityAttr = MCSA_PrivateExtern; 59 HiddenDeclarationVisibilityAttr = MCSA_Invalid; 60 // Doesn't support protected visibility. 61 ProtectedVisibilityAttr = MCSA_Global; 62 63 HasDotTypeDotSizeDirective = false; 64 HasNoDeadStrip = true; 65 HasSymbolResolver = true; 66 67 DwarfRequiresRelocationForSectionOffset = false; 68 DwarfUsesLabelOffsetForRanges = false; 69 } 70
