MCAsmInfoDarwin.cpp revision 37ed9c199ca639565f6ce88105f9e39e898d82d0 
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  LinkerPrivateGlobalPrefix = "l";
27  HasSingleParameterDotFile = false;
28  HasSubsectionsViaSymbols = true;
29
30  AlignmentIsInBytes = false;
31  COMMDirectiveAlignmentIsInBytes = false;
32  LCOMMDirectiveAlignmentType = LCOMM::Log2Alignment;
33  InlineAsmStart = " InlineAsm Start";
34  InlineAsmEnd = " InlineAsm End";
35
36  // Directives:
37  HasWeakDefDirective = true;
38  HasWeakDefCanBeHiddenDirective = true;
39  WeakRefDirective = "\t.weak_reference ";
40  ZeroDirective = "\t.space\t";  // ".space N" emits N zeros.
41  HasMachoZeroFillDirective = true;  // Uses .zerofill
42  HasMachoTBSSDirective = true; // Uses .tbss
43  HasStaticCtorDtorReferenceInStaticMode = true;
44
45  // FIXME: Change this once MC is the system assembler.
46  HasAggressiveSymbolFolding = false;
47
48  HiddenVisibilityAttr = MCSA_PrivateExtern;
49  HiddenDeclarationVisibilityAttr = MCSA_Invalid;
50
51  // Doesn't support protected visibility.
52  ProtectedVisibilityAttr = MCSA_Invalid;
53
54  HasDotTypeDotSizeDirective = false;
55  HasNoDeadStrip = true;
56
57  DwarfUsesRelocationsAcrossSections = false;
58
59  UseIntegratedAssembler = true;
60  SetDirectiveSuppressesReloc = true;
61}
62