ARMMCAsmInfo.cpp revision 36b56886974eae4f9c5ebc96befd3e7bfe5de338 
1//===-- ARMMCAsmInfo.cpp - ARM asm properties -----------------------------===//
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 contains the declarations of the ARMMCAsmInfo properties.
11//
12//===----------------------------------------------------------------------===//
13
14#include "ARMMCAsmInfo.h"
15#include "llvm/Support/CommandLine.h"
16#include "llvm/ADT/Triple.h"
17
18using namespace llvm;
19
20void ARMMCAsmInfoDarwin::anchor() { }
21
22ARMMCAsmInfoDarwin::ARMMCAsmInfoDarwin(StringRef TT) {
23  Triple TheTriple(TT);
24  if ((TheTriple.getArch() == Triple::armeb) ||
25      (TheTriple.getArch() == Triple::thumbeb))
26    IsLittleEndian = false;
27
28  Data64bitsDirective = 0;
29  CommentString = "@";
30  Code16Directive = ".code\t16";
31  Code32Directive = ".code\t32";
32  UseDataRegionDirectives = true;
33
34  SupportsDebugInformation = true;
35
36  // Exceptions handling
37  ExceptionsType = ExceptionHandling::SjLj;
38
39  UseIntegratedAssembler = true;
40}
41
42void ARMELFMCAsmInfo::anchor() { }
43
44ARMELFMCAsmInfo::ARMELFMCAsmInfo(StringRef TT) {
45  Triple TheTriple(TT);
46  if ((TheTriple.getArch() == Triple::armeb) ||
47      (TheTriple.getArch() == Triple::thumbeb))
48    IsLittleEndian = false;
49
50  // ".comm align is in bytes but .align is pow-2."
51  AlignmentIsInBytes = false;
52
53  Data64bitsDirective = 0;
54  CommentString = "@";
55  Code16Directive = ".code\t16";
56  Code32Directive = ".code\t32";
57
58  HasLEB128 = true;
59  SupportsDebugInformation = true;
60
61  // Exceptions handling
62  ExceptionsType = ExceptionHandling::ARM;
63
64  // foo(plt) instead of foo@plt
65  UseParensForSymbolVariant = true;
66
67  UseIntegratedAssembler = true;
68}
69
70void ARMELFMCAsmInfo::setUseIntegratedAssembler(bool Value) {
71  UseIntegratedAssembler = Value;
72  if (!UseIntegratedAssembler) {
73    // gas doesn't handle VFP register names in cfi directives,
74    // so don't use register names with external assembler.
75    // See https://sourceware.org/bugzilla/show_bug.cgi?id=16694
76    DwarfRegNumForCFI = true;
77  }
78}
79
80void ARMCOFFMCAsmInfoMicrosoft::anchor() { }
81
82ARMCOFFMCAsmInfoMicrosoft::ARMCOFFMCAsmInfoMicrosoft() {
83  AlignmentIsInBytes = false;
84
85  PrivateGlobalPrefix = "$M";
86}
87
88void ARMCOFFMCAsmInfoGNU::anchor() { }
89
90ARMCOFFMCAsmInfoGNU::ARMCOFFMCAsmInfoGNU() {
91  AlignmentIsInBytes = false;
92
93  CommentString = "@";
94  Code16Directive = ".code\t16";
95  Code32Directive = ".code\t32";
96  PrivateGlobalPrefix = ".L";
97
98  HasLEB128 = true;
99  SupportsDebugInformation = true;
100  ExceptionsType = ExceptionHandling::None;
101  UseParensForSymbolVariant = true;
102
103  UseIntegratedAssembler = false;
104  DwarfRegNumForCFI = true;
105}
106
107