blob: 402ab4e46b67ba15e250ea1c2361892c0a4d7a4b [file] [log] [blame]
Evan Cheng78a9f132011-07-06 22:02:34 +00001//===-- ARMMCTargetDesc.cpp - ARM Target Descriptions -----------*- 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 provides ARM specific target descriptions.
11//
12//===----------------------------------------------------------------------===//
13
14#include "ARMMCTargetDesc.h"
15#include "llvm/MC/MCInstrInfo.h"
16#include "llvm/MC/MCRegisterInfo.h"
17#include "llvm/MC/MCSubtargetInfo.h"
18#include "llvm/Target/TargetRegistry.h"
19
20#define GET_REGINFO_MC_DESC
21#include "ARMGenRegisterInfo.inc"
22
23#define GET_INSTRINFO_MC_DESC
24#include "ARMGenInstrInfo.inc"
25
26#define GET_SUBTARGETINFO_MC_DESC
27#include "ARMGenSubtargetInfo.inc"
28
29using namespace llvm;
30
31MCInstrInfo *createARMMCInstrInfo() {
32 MCInstrInfo *X = new MCInstrInfo();
33 InitARMMCInstrInfo(X);
34 return X;
35}
36
37MCRegisterInfo *createARMMCRegisterInfo() {
38 MCRegisterInfo *X = new MCRegisterInfo();
39 InitARMMCRegisterInfo(X);
40 return X;
41}
42
Evan Cheng0ddff1b2011-07-07 07:07:08 +000043MCSubtargetInfo *createARMMCSubtargetInfo(StringRef TT, StringRef CPU,
44 StringRef FS) {
Evan Cheng78a9f132011-07-06 22:02:34 +000045 MCSubtargetInfo *X = new MCSubtargetInfo();
Evan Cheng0ddff1b2011-07-07 07:07:08 +000046 InitARMMCSubtargetInfo(X, CPU, FS);
Evan Cheng78a9f132011-07-06 22:02:34 +000047 return X;
48}
49
50// Force static initialization.
51extern "C" void LLVMInitializeARMMCInstrInfo() {
52 RegisterMCInstrInfo<MCInstrInfo> X(TheARMTarget);
53 RegisterMCInstrInfo<MCInstrInfo> Y(TheThumbTarget);
54
55 TargetRegistry::RegisterMCInstrInfo(TheARMTarget, createARMMCInstrInfo);
56 TargetRegistry::RegisterMCInstrInfo(TheThumbTarget, createARMMCInstrInfo);
57}
58
59extern "C" void LLVMInitializeARMMCRegInfo() {
60 RegisterMCRegInfo<MCRegisterInfo> X(TheARMTarget);
61 RegisterMCRegInfo<MCRegisterInfo> Y(TheThumbTarget);
62
63 TargetRegistry::RegisterMCRegInfo(TheARMTarget, createARMMCRegisterInfo);
64 TargetRegistry::RegisterMCRegInfo(TheThumbTarget, createARMMCRegisterInfo);
65}
66
67extern "C" void LLVMInitializeARMMCSubtargetInfo() {
68 RegisterMCSubtargetInfo<MCSubtargetInfo> X(TheARMTarget);
69 RegisterMCSubtargetInfo<MCSubtargetInfo> Y(TheThumbTarget);
70
71 TargetRegistry::RegisterMCSubtargetInfo(TheARMTarget,
72 createARMMCSubtargetInfo);
73 TargetRegistry::RegisterMCSubtargetInfo(TheThumbTarget,
74 createARMMCSubtargetInfo);
75}
Evan Cheng94ca42f2011-07-07 00:08:19 +000076
77std::string ARM_MC::ParseARMTriple(StringRef TT, bool &IsThumb) {
78 // Set the boolean corresponding to the current target triple, or the default
79 // if one cannot be determined, to true.
80 unsigned Len = TT.size();
81 unsigned Idx = 0;
82
83 if (Len >= 5 && TT.substr(0, 4) == "armv")
84 Idx = 4;
85 else if (Len >= 6 && TT.substr(0, 5) == "thumb") {
86 IsThumb = true;
87 if (Len >= 7 && TT[5] == 'v')
88 Idx = 6;
89 }
90
91 std::string ARMArchFeature;
92 if (Idx) {
93 unsigned SubVer = TT[Idx];
94 if (SubVer >= '7' && SubVer <= '9') {
Evan Cheng94ca42f2011-07-07 00:08:19 +000095 if (Len >= Idx+2 && TT[Idx+1] == 'm') {
Evan Cheng39dfb0f2011-07-07 03:55:05 +000096 // v7m: FeatureNoARM, FeatureDB, FeatureHWDiv
97 ARMArchFeature = "+v7,+noarm,+db,+hwdiv";
Evan Cheng94ca42f2011-07-07 00:08:19 +000098 } else if (Len >= Idx+3 && TT[Idx+1] == 'e'&& TT[Idx+2] == 'm') {
Evan Cheng39dfb0f2011-07-07 03:55:05 +000099 // v7em: FeatureNoARM, FeatureDB, FeatureHWDiv, FeatureDSPThumb2,
100 // FeatureT2XtPk
101 ARMArchFeature = "+v7,+noarm,+db,+hwdiv,+t2dsp,t2xtpk";
102 } else
103 // v7a: FeatureNEON, FeatureDB, FeatureDSPThumb2
104 ARMArchFeature = "+v7,+neon,+db,+t2dsp";
Evan Cheng94ca42f2011-07-07 00:08:19 +0000105 } else if (SubVer == '6') {
Evan Cheng39dfb0f2011-07-07 03:55:05 +0000106 if (Len >= Idx+3 && TT[Idx+1] == 't' && TT[Idx+2] == '2')
Evan Cheng94ca42f2011-07-07 00:08:19 +0000107 ARMArchFeature = "+v6t2";
Evan Cheng39dfb0f2011-07-07 03:55:05 +0000108 else
109 ARMArchFeature = "+v6";
Evan Cheng94ca42f2011-07-07 00:08:19 +0000110 } else if (SubVer == '5') {
Evan Cheng39dfb0f2011-07-07 03:55:05 +0000111 if (Len >= Idx+3 && TT[Idx+1] == 't' && TT[Idx+2] == 'e')
Evan Cheng94ca42f2011-07-07 00:08:19 +0000112 ARMArchFeature = "+v5te";
Evan Cheng39dfb0f2011-07-07 03:55:05 +0000113 else
114 ARMArchFeature = "+v5t";
115 } else if (SubVer == '4' && Len >= Idx+2 && TT[Idx+1] == 't')
116 ARMArchFeature = "+v4t";
Evan Cheng94ca42f2011-07-07 00:08:19 +0000117 }
118
119 return ARMArchFeature;
120}