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 #include "llvm/MC/MCContext.h"
  17 #include "llvm/MC/MCExpr.h"
  18 #include "llvm/MC/MCStreamer.h"
  19 using namespace llvm;
  20
  21 MCAsmInfoDarwin::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 }