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 anchor()21void MCAsmInfoDarwin::anchor() { } 22 MCAsmInfoDarwin()23MCAsmInfoDarwin::MCAsmInfoDarwin() { 24 // Common settings for all Darwin targets. 25 // Syntax: 26 GlobalPrefix = "_"; 27 PrivateGlobalPrefix = "L"; 28 LinkerPrivateGlobalPrefix = "l"; 29 AllowQuotesInName = true; 30 HasSingleParameterDotFile = false; 31 HasSubsectionsViaSymbols = true; 32 33 AlignmentIsInBytes = false; 34 COMMDirectiveAlignmentIsInBytes = false; 35 InlineAsmStart = " InlineAsm Start"; 36 InlineAsmEnd = " InlineAsm End"; 37 38 // Directives: 39 WeakDefDirective = "\t.weak_definition "; 40 WeakRefDirective = "\t.weak_reference "; 41 ZeroDirective = "\t.space\t"; // ".space N" emits N zeros. 42 HasMachoZeroFillDirective = true; // Uses .zerofill 43 HasMachoTBSSDirective = true; // Uses .tbss 44 HasStaticCtorDtorReferenceInStaticMode = true; 45 46 CodeBegin = "L$start$code$"; 47 DataBegin = "L$start$data$"; 48 JT8Begin = "L$start$jt8$"; 49 JT16Begin = "L$start$jt16$"; 50 JT32Begin = "L$start$jt32$"; 51 SupportsDataRegions = true; 52 53 // FIXME: Darwin 10 and newer don't need this. 54 LinkerRequiresNonEmptyDwarfLines = true; 55 56 // FIXME: Change this once MC is the system assembler. 57 HasAggressiveSymbolFolding = false; 58 59 HiddenVisibilityAttr = MCSA_PrivateExtern; 60 HiddenDeclarationVisibilityAttr = MCSA_Invalid; 61 62 // Doesn't support protected visibility. 63 ProtectedVisibilityAttr = MCSA_Invalid; 64 65 HasDotTypeDotSizeDirective = false; 66 HasNoDeadStrip = true; 67 HasSymbolResolver = true; 68 69 DwarfRequiresRelocationForSectionOffset = false; 70 DwarfUsesLabelOffsetForRanges = false; 71 DwarfUsesRelocationsForStringPool = false; 72 } 73