MCAsmInfoDarwin.cpp revision 3a9be0ee36fe2143f514d28315f3dc1bda132b2e 
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
28  AlignmentIsInBytes = false;
29  InlineAsmStart = " InlineAsm Start";
30  InlineAsmEnd = " InlineAsm End";
31
32  // Directives:
33  WeakDefDirective = "\t.weak_definition ";
34  WeakRefDirective = "\t.weak_reference ";
35  HiddenDirective = "\t.private_extern ";
36  ZeroDirective = "\t.space\t";  // ".space N" emits N zeros.
37  HasMachoZeroFillDirective = true;  // Uses .zerofill
38  HasStaticCtorDtorReferenceInStaticMode = true;
39  SetDirective = "\t.set";
40  ProtectedDirective = "\t.globl\t";
41  HasDotTypeDotSizeDirective = false;
42  HasNoDeadStrip = true;
43  // Note: Even though darwin has the .lcomm directive, it is just a synonym for
44  // zerofill, so we prefer to use .zerofill.
45
46  // _foo.eh symbols are currently always exported so that the linker knows
47  // about them.  This is not necessary on 10.6 and later, but it
48  // doesn't hurt anything.
49  // FIXME: I need to get this from Triple.
50  Is_EHSymbolPrivate = false;
51  GlobalEHDirective = "\t.globl\t";
52  SupportsWeakOmittedEHFrame = false;
53}
54
55