MCAsmInfoDarwin.cpp revision 202878
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" 16using namespace llvm; 17 18MCAsmInfoDarwin::MCAsmInfoDarwin() { 19 // Common settings for all Darwin targets. 20 // Syntax: 21 GlobalPrefix = "_"; 22 PrivateGlobalPrefix = "L"; 23 LinkerPrivateGlobalPrefix = "l"; 24 NeedsSet = true; 25 AllowQuotesInName = true; 26 HasSingleParameterDotFile = false; 27 HasSubsectionsViaSymbols = true; 28 29 AlignmentIsInBytes = false; 30 InlineAsmStart = " InlineAsm Start"; 31 InlineAsmEnd = " InlineAsm End"; 32 33 // Directives: 34 WeakDefDirective = "\t.weak_definition "; 35 WeakRefDirective = "\t.weak_reference "; 36 ZeroDirective = "\t.space\t"; // ".space N" emits N zeros. 37 HasMachoZeroFillDirective = true; // Uses .zerofill 38 HasStaticCtorDtorReferenceInStaticMode = true; 39 SetDirective = "\t.set"; 40 41 HiddenVisibilityAttr = MCSA_PrivateExtern; 42 // Doesn't support protected visibility. 43 ProtectedVisibilityAttr = MCSA_Global; 44 45 46 HasDotTypeDotSizeDirective = false; 47 HasNoDeadStrip = true; 48 // Note: Even though darwin has the .lcomm directive, it is just a synonym for 49 // zerofill, so we prefer to use .zerofill. 50 51 // _foo.eh symbols are currently always exported so that the linker knows 52 // about them. This is not necessary on 10.6 and later, but it 53 // doesn't hurt anything. 54 // FIXME: I need to get this from Triple. 55 Is_EHSymbolPrivate = false; 56 GlobalEHDirective = "\t.globl\t"; 57 SupportsWeakOmittedEHFrame = false; 58} 59 60