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";  // Marker for some ObjC metadata
  24   NeedsSet = true;
  25   NeedsIndirectEncoding = true;
  26   AllowQuotesInName = true;
  27   HasSingleParameterDotFile = false;
  28
  29   AlignmentIsInBytes = false;
  30   InlineAsmStart = " InlineAsm Start";
  31   InlineAsmEnd = " InlineAsm End";
  32
  33   // In non-PIC modes, emit a special label before jump tables so that the
  34   // linker can perform more accurate dead code stripping.  We do not check the
  35   // relocation model here since it can be overridden later.
  36   JumpTableSpecialLabelPrefix = "l";
  37
  38   // Directives:
  39   WeakDefDirective = "\t.weak_definition ";
  40   WeakRefDirective = "\t.weak_reference ";
  41   HiddenDirective = "\t.private_extern ";
  42   LCOMMDirective = "\t.lcomm\t";
  43   ZeroDirective = "\t.space\t";  // ".space N" emits N zeros.
  44   ZeroFillDirective = "\t.zerofill\t";  // Uses .zerofill
  45   SetDirective = "\t.set";
  46   ProtectedDirective = "\t.globl\t";
  47   HasDotTypeDotSizeDirective = false;
  48   UsedDirective = "\t.no_dead_strip\t";
  49
  50   // _foo.eh symbols are currently always exported so that the linker knows
  51   // about them.  This is not necessary on 10.6 and later, but it
  52   // doesn't hurt anything.
  53   // FIXME: I need to get this from Triple.
  54   Is_EHSymbolPrivate = false;
  55   GlobalEHDirective = "\t.globl\t";
  56   SupportsWeakOmittedEHFrame = false;
  57
  58 }
  59