SparcMCTargetDesc.cpp revision 41d59c61307002823c246c14589048266a6bf423 
1//===-- SparcMCTargetDesc.cpp - Sparc Target Descriptions -----------------===//
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 Sparc specific target descriptions.
11//
12//===----------------------------------------------------------------------===//
13
14#include "SparcMCTargetDesc.h"
15#include "SparcMCAsmInfo.h"
16#include "llvm/MC/MCCodeGenInfo.h"
17#include "llvm/MC/MCInstrInfo.h"
18#include "llvm/MC/MCRegisterInfo.h"
19#include "llvm/MC/MCSubtargetInfo.h"
20#include "llvm/Support/ErrorHandling.h"
21#include "llvm/Support/TargetRegistry.h"
22
23#define GET_INSTRINFO_MC_DESC
24#include "SparcGenInstrInfo.inc"
25
26#define GET_SUBTARGETINFO_MC_DESC
27#include "SparcGenSubtargetInfo.inc"
28
29#define GET_REGINFO_MC_DESC
30#include "SparcGenRegisterInfo.inc"
31
32using namespace llvm;
33
34static MCInstrInfo *createSparcMCInstrInfo() {
35  MCInstrInfo *X = new MCInstrInfo();
36  InitSparcMCInstrInfo(X);
37  return X;
38}
39
40static MCRegisterInfo *createSparcMCRegisterInfo(StringRef TT) {
41  MCRegisterInfo *X = new MCRegisterInfo();
42  InitSparcMCRegisterInfo(X, SP::I7);
43  return X;
44}
45
46static MCSubtargetInfo *createSparcMCSubtargetInfo(StringRef TT, StringRef CPU,
47                                                   StringRef FS) {
48  MCSubtargetInfo *X = new MCSubtargetInfo();
49  InitSparcMCSubtargetInfo(X, TT, CPU, FS);
50  return X;
51}
52
53// Code models. Some only make sense for 64-bit code.
54//
55// SunCC  Reloc   CodeModel  Constraints
56// abs32  Static  Small      text+data+bss linked below 2^32 bytes
57// abs44  Static  Medium     text+data+bss linked below 2^44 bytes
58// abs64  Static  Large      text smaller than 2^31 bytes
59// pic13  PIC_    Small      GOT < 2^13 bytes
60// pic32  PIC_    Medium     GOT < 2^32 bytes
61//
62// All code models require that the text segment is smaller than 2GB.
63
64static MCCodeGenInfo *createSparcMCCodeGenInfo(StringRef TT, Reloc::Model RM,
65                                               CodeModel::Model CM,
66                                               CodeGenOpt::Level OL) {
67  MCCodeGenInfo *X = new MCCodeGenInfo();
68
69  // The default 32-bit code model is abs32/pic32.
70  if (CM == CodeModel::Default)
71    CM = RM == Reloc::PIC_ ? CodeModel::Medium : CodeModel::Small;
72
73  X->InitMCCodeGenInfo(RM, CM, OL);
74  return X;
75}
76
77static MCCodeGenInfo *createSparcV9MCCodeGenInfo(StringRef TT, Reloc::Model RM,
78                                                 CodeModel::Model CM,
79                                                 CodeGenOpt::Level OL) {
80  MCCodeGenInfo *X = new MCCodeGenInfo();
81
82  // The default 64-bit code model is abs44/pic32.
83  if (CM == CodeModel::Default)
84    CM = CodeModel::Medium;
85
86  X->InitMCCodeGenInfo(RM, CM, OL);
87  return X;
88}
89extern "C" void LLVMInitializeSparcTargetMC() {
90  // Register the MC asm info.
91  RegisterMCAsmInfo<SparcELFMCAsmInfo> X(TheSparcTarget);
92  RegisterMCAsmInfo<SparcELFMCAsmInfo> Y(TheSparcV9Target);
93
94  // Register the MC codegen info.
95  TargetRegistry::RegisterMCCodeGenInfo(TheSparcTarget,
96                                       createSparcMCCodeGenInfo);
97  TargetRegistry::RegisterMCCodeGenInfo(TheSparcV9Target,
98                                       createSparcV9MCCodeGenInfo);
99
100  // Register the MC instruction info.
101  TargetRegistry::RegisterMCInstrInfo(TheSparcTarget, createSparcMCInstrInfo);
102
103  // Register the MC register info.
104  TargetRegistry::RegisterMCRegInfo(TheSparcTarget, createSparcMCRegisterInfo);
105
106  // Register the MC subtarget info.
107  TargetRegistry::RegisterMCSubtargetInfo(TheSparcTarget,
108                                          createSparcMCSubtargetInfo);
109}
110