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 MCAsmInfoDarwin()21MCAsmInfoDarwin::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 HasStaticCtorDtorReferenceInStaticMode = true; 43 44 // FIXME: Darwin 10 and newer don't need this. 45 LinkerRequiresNonEmptyDwarfLines = true; 46 47 // FIXME: Change this once MC is the system assembler. 48 HasAggressiveSymbolFolding = false; 49 50 HiddenVisibilityAttr = MCSA_PrivateExtern; 51 HiddenDeclarationVisibilityAttr = MCSA_Invalid; 52 // Doesn't support protected visibility. 53 ProtectedVisibilityAttr = MCSA_Global; 54 55 HasDotTypeDotSizeDirective = false; 56 HasNoDeadStrip = true; 57 HasSymbolResolver = true; 58 59 DwarfRequiresRelocationForSectionOffset = false; 60 DwarfUsesLabelOffsetForRanges = false; 61 } 62