1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
|
//===-- ARMMCTargetDesc.cpp - ARM Target Descriptions -----------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file provides ARM specific target descriptions.
//
//===----------------------------------------------------------------------===//
#include "ARMMCTargetDesc.h"
#include "ARMMCAsmInfo.h"
#include "llvm/MC/MCInstrInfo.h"
#include "llvm/MC/MCRegisterInfo.h"
#include "llvm/MC/MCSubtargetInfo.h"
#include "llvm/Target/TargetRegistry.h"
#define GET_REGINFO_MC_DESC
#include "ARMGenRegisterInfo.inc"
#define GET_INSTRINFO_MC_DESC
#include "ARMGenInstrInfo.inc"
#define GET_SUBTARGETINFO_MC_DESC
#include "ARMGenSubtargetInfo.inc"
using namespace llvm;
std::string ARM_MC::ParseARMTriple(StringRef TT) {
// Set the boolean corresponding to the current target triple, or the default
// if one cannot be determined, to true.
unsigned Len = TT.size();
unsigned Idx = 0;
// FIXME: Enahnce Triple helper class to extract ARM version.
bool isThumb = false;
if (Len >= 5 && TT.substr(0, 4) == "armv")
Idx = 4;
else if (Len >= 6 && TT.substr(0, 5) == "thumb") {
isThumb = true;
if (Len >= 7 && TT[5] == 'v')
Idx = 6;
}
std::string ARMArchFeature;
if (Idx) {
unsigned SubVer = TT[Idx];
if (SubVer >= '7' && SubVer <= '9') {
if (Len >= Idx+2 && TT[Idx+1] == 'm') {
// v7m: FeatureNoARM, FeatureDB, FeatureHWDiv
ARMArchFeature = "+v7,+noarm,+db,+hwdiv";
} else if (Len >= Idx+3 && TT[Idx+1] == 'e'&& TT[Idx+2] == 'm') {
// v7em: FeatureNoARM, FeatureDB, FeatureHWDiv, FeatureDSPThumb2,
// FeatureT2XtPk
ARMArchFeature = "+v7,+noarm,+db,+hwdiv,+t2dsp,t2xtpk";
} else
// v7a: FeatureNEON, FeatureDB, FeatureDSPThumb2
ARMArchFeature = "+v7,+neon,+db,+t2dsp";
} else if (SubVer == '6') {
if (Len >= Idx+3 && TT[Idx+1] == 't' && TT[Idx+2] == '2')
ARMArchFeature = "+v6t2";
else
ARMArchFeature = "+v6";
} else if (SubVer == '5') {
if (Len >= Idx+3 && TT[Idx+1] == 't' && TT[Idx+2] == 'e')
ARMArchFeature = "+v5te";
else
ARMArchFeature = "+v5t";
} else if (SubVer == '4' && Len >= Idx+2 && TT[Idx+1] == 't')
ARMArchFeature = "+v4t";
}
if (isThumb) {
if (ARMArchFeature.empty())
ARMArchFeature = "+thumb-mode";
else
ARMArchFeature += ",+thumb-mode";
}
return ARMArchFeature;
}
MCSubtargetInfo *ARM_MC::createARMMCSubtargetInfo(StringRef TT, StringRef CPU,
StringRef FS) {
std::string ArchFS = ARM_MC::ParseARMTriple(TT);
if (!FS.empty()) {
if (!ArchFS.empty())
ArchFS = ArchFS + "," + FS.str();
else
ArchFS = FS;
}
MCSubtargetInfo *X = new MCSubtargetInfo();
InitARMMCSubtargetInfo(X, TT, CPU, ArchFS);
return X;
}
// Force static initialization.
extern "C" void LLVMInitializeARMMCSubtargetInfo() {
TargetRegistry::RegisterMCSubtargetInfo(TheARMTarget,
ARM_MC::createARMMCSubtargetInfo);
TargetRegistry::RegisterMCSubtargetInfo(TheThumbTarget,
ARM_MC::createARMMCSubtargetInfo);
}
static MCInstrInfo *createARMMCInstrInfo() {
MCInstrInfo *X = new MCInstrInfo();
InitARMMCInstrInfo(X);
return X;
}
extern "C" void LLVMInitializeARMMCInstrInfo() {
TargetRegistry::RegisterMCInstrInfo(TheARMTarget, createARMMCInstrInfo);
TargetRegistry::RegisterMCInstrInfo(TheThumbTarget, createARMMCInstrInfo);
}
static MCRegisterInfo *createARMMCRegisterInfo(StringRef Triple) {
MCRegisterInfo *X = new MCRegisterInfo();
InitARMMCRegisterInfo(X, ARM::LR);
return X;
}
extern "C" void LLVMInitializeARMMCRegisterInfo() {
TargetRegistry::RegisterMCRegInfo(TheARMTarget, createARMMCRegisterInfo);
TargetRegistry::RegisterMCRegInfo(TheThumbTarget, createARMMCRegisterInfo);
}
static MCAsmInfo *createARMMCAsmInfo(const Target &T, StringRef TT) {
Triple TheTriple(TT);
if (TheTriple.isOSDarwin())
return new ARMMCAsmInfoDarwin();
return new ARMELFMCAsmInfo();
}
extern "C" void LLVMInitializeARMMCAsmInfo() {
// Register the target asm info.
RegisterMCAsmInfoFn A(TheARMTarget, createARMMCAsmInfo);
RegisterMCAsmInfoFn B(TheThumbTarget, createARMMCAsmInfo);
}
MCCodeGenInfo *createARMMCCodeGenInfo(StringRef TT, Reloc::Model RM) {
MCCodeGenInfo *X = new MCCodeGenInfo();
if (RM == Reloc::Default)
RM = Reloc::DynamicNoPIC;
X->InitMCCodeGenInfo(RM);
return X;
}
extern "C" void LLVMInitializeARMMCCodeGenInfo() {
TargetRegistry::RegisterMCCodeGenInfo(TheARMTarget, createARMMCCodeGenInfo);
TargetRegistry::RegisterMCCodeGenInfo(TheThumbTarget, createARMMCCodeGenInfo);
}
|
