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  GlobalPrefix = "_";
27  PrivateGlobalPrefix = "L";
28  LinkerPrivateGlobalPrefix = "l";
29  HasSingleParameterDotFile = false;
30  HasSubsectionsViaSymbols = true;
31
32  AlignmentIsInBytes = false;
33  COMMDirectiveAlignmentIsInBytes = false;
34  LCOMMDirectiveAlignmentType = LCOMM::Log2Alignment;
35  InlineAsmStart = " InlineAsm Start";
36  InlineAsmEnd = " InlineAsm End";
37
38  // Directives:
39  HasWeakDefDirective = true;
40  HasWeakDefCanBeHiddenDirective = true;
41  WeakRefDirective = "\t.weak_reference ";
42  ZeroDirective = "\t.space\t";  // ".space N" emits N zeros.
43  HasMachoZeroFillDirective = true;  // Uses .zerofill
44  HasMachoTBSSDirective = true; // Uses .tbss
45  HasStaticCtorDtorReferenceInStaticMode = true;
46
47  // FIXME: Darwin 10 and newer don't need this.
48  LinkerRequiresNonEmptyDwarfLines = true;
49
50  // FIXME: Change this once MC is the system assembler.
51  HasAggressiveSymbolFolding = false;
52
53  HiddenVisibilityAttr = MCSA_PrivateExtern;
54  HiddenDeclarationVisibilityAttr = MCSA_Invalid;
55
56  // Doesn't support protected visibility.
57  ProtectedVisibilityAttr = MCSA_Invalid;
58
59  HasDotTypeDotSizeDirective = false;
60  HasNoDeadStrip = true;
61
62  DwarfUsesRelocationsAcrossSections = false;
63}
64