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" 19using namespace llvm; 20 21void MCAsmInfoDarwin::anchor() { } 22 23MCAsmInfoDarwin::MCAsmInfoDarwin() { 24 // Common settings for all Darwin targets. 25 // Syntax: 26 GlobalPrefix = "_"; 27 PrivateGlobalPrefix = "L"; 28 LinkerPrivateGlobalPrefix = "l"; 29 HasSingleParameterDotFile = false; 30 HasSubsectionsViaSymbols = true; 31 32 AlignmentIsInBytes = false; 33 COMMDirectiveAlignmentIsInBytes = false; 34 LCOMMDirectiveAlignmentType = LCOMM::Log2Alignment; 35 InlineAsmStart = " InlineAsm Start"; 36 InlineAsmEnd = " InlineAsm End"; 37 38 // Directives: 39 HasWeakDefDirective = true; 40 HasWeakDefCanBeHiddenDirective = true; 41 WeakRefDirective = "\t.weak_reference "; 42 ZeroDirective = "\t.space\t"; // ".space N" emits N zeros. 43 HasMachoZeroFillDirective = true; // Uses .zerofill 44 HasMachoTBSSDirective = true; // Uses .tbss 45 HasStaticCtorDtorReferenceInStaticMode = true; 46 47 // FIXME: Darwin 10 and newer don't need this. 48 LinkerRequiresNonEmptyDwarfLines = true; 49 50 // FIXME: Change this once MC is the system assembler. 51 HasAggressiveSymbolFolding = false; 52 53 HiddenVisibilityAttr = MCSA_PrivateExtern; 54 HiddenDeclarationVisibilityAttr = MCSA_Invalid; 55 56 // Doesn't support protected visibility. 57 ProtectedVisibilityAttr = MCSA_Invalid; 58 59 HasDotTypeDotSizeDirective = false; 60 HasNoDeadStrip = true; 61 62 DwarfUsesRelocationsAcrossSections = false; 63} 64