lib/MC/MCAsmInfoDarwin.cpp

   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 using namespace llvm;
  17
  18 MCAsmInfoDarwin::MCAsmInfoDarwin() {
  19   // Common settings for all Darwin targets.
  20   // Syntax:
  21   GlobalPrefix = "_";
  22   PrivateGlobalPrefix = "L";
  23   LinkerPrivateGlobalPrefix = "l";
  24   AllowQuotesInName = true;
  25   HasSingleParameterDotFile = false;
  26   HasSubsectionsViaSymbols = true;
  27
  28   AlignmentIsInBytes = false;
  29   COMMDirectiveAlignmentIsInBytes = 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   HasMachoTBSSDirective = true; // Uses .tbss
  39   HasStaticCtorDtorReferenceInStaticMode = true;
  40
  41   // FIXME: Darwin 10 and newer don't need this.
  42   LinkerRequiresNonEmptyDwarfLines = true;
  43
  44   // FIXME: Change this once MC is the system assembler.
  45   HasAggressiveSymbolFolding = false;
  46
  47   HiddenVisibilityAttr = MCSA_PrivateExtern;
  48   HiddenDeclarationVisibilityAttr = MCSA_Invalid;
  49   // Doesn't support protected visibility.
  50   ProtectedVisibilityAttr = MCSA_Global;
  51
  52   HasDotTypeDotSizeDirective = false;
  53   HasNoDeadStrip = true;
  54   HasSymbolResolver = true;
  55
  56   DwarfUsesAbsoluteLabelForStmtList = false;
  57   DwarfUsesLabelOffsetForRanges = false;
  58 }
  59