HexagonMCTargetDesc.cpp revision 36b56886974eae4f9c5ebc96befd3e7bfe5de338 
1//===-- HexagonMCTargetDesc.cpp - Hexagon 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 Hexagon specific target descriptions.
11//
12//===----------------------------------------------------------------------===//
13
14#include "HexagonMCTargetDesc.h"
15#include "HexagonMCAsmInfo.h"
16#include "InstPrinter/HexagonInstPrinter.h"
17#include "llvm/MC/MCCodeGenInfo.h"
18#include "llvm/MC/MCInstrInfo.h"
19#include "llvm/MC/MCRegisterInfo.h"
20#include "llvm/MC/MCStreamer.h"
21#include "llvm/MC/MCSubtargetInfo.h"
22#include "llvm/MC/MachineLocation.h"
23#include "llvm/Support/ErrorHandling.h"
24#include "llvm/Support/TargetRegistry.h"
25
26#define GET_INSTRINFO_MC_DESC
27#include "HexagonGenInstrInfo.inc"
28
29#define GET_SUBTARGETINFO_MC_DESC
30#include "HexagonGenSubtargetInfo.inc"
31
32#define GET_REGINFO_MC_DESC
33#include "HexagonGenRegisterInfo.inc"
34
35using namespace llvm;
36
37static MCInstrInfo *createHexagonMCInstrInfo() {
38  MCInstrInfo *X = new MCInstrInfo();
39  InitHexagonMCInstrInfo(X);
40  return X;
41}
42
43static MCRegisterInfo *createHexagonMCRegisterInfo(StringRef TT) {
44  MCRegisterInfo *X = new MCRegisterInfo();
45  InitHexagonMCRegisterInfo(X, Hexagon::R0);
46  return X;
47}
48
49static MCSubtargetInfo *createHexagonMCSubtargetInfo(StringRef TT,
50                                                     StringRef CPU,
51                                                     StringRef FS) {
52  MCSubtargetInfo *X = new MCSubtargetInfo();
53  InitHexagonMCSubtargetInfo(X, TT, CPU, FS);
54  return X;
55}
56
57static MCAsmInfo *createHexagonMCAsmInfo(const MCRegisterInfo &MRI,
58                                         StringRef TT) {
59  MCAsmInfo *MAI = new HexagonMCAsmInfo(TT);
60
61  // VirtualFP = (R30 + #0).
62  MCCFIInstruction Inst = MCCFIInstruction::createDefCfa(
63      0, Hexagon::R30, 0);
64  MAI->addInitialFrameState(Inst);
65
66  return MAI;
67}
68
69static MCCodeGenInfo *createHexagonMCCodeGenInfo(StringRef TT, Reloc::Model RM,
70                                             CodeModel::Model CM,
71                                             CodeGenOpt::Level OL) {
72  MCCodeGenInfo *X = new MCCodeGenInfo();
73  // For the time being, use static relocations, since there's really no
74  // support for PIC yet.
75  X->InitMCCodeGenInfo(Reloc::Static, CM, OL);
76  return X;
77}
78
79// Force static initialization.
80extern "C" void LLVMInitializeHexagonTargetMC() {
81  // Register the MC asm info.
82  RegisterMCAsmInfoFn X(TheHexagonTarget, createHexagonMCAsmInfo);
83
84  // Register the MC codegen info.
85  TargetRegistry::RegisterMCCodeGenInfo(TheHexagonTarget,
86                                        createHexagonMCCodeGenInfo);
87
88  // Register the MC instruction info.
89  TargetRegistry::RegisterMCInstrInfo(TheHexagonTarget, createHexagonMCInstrInfo);
90
91  // Register the MC register info.
92  TargetRegistry::RegisterMCRegInfo(TheHexagonTarget,
93                                    createHexagonMCRegisterInfo);
94
95  // Register the MC subtarget info.
96  TargetRegistry::RegisterMCSubtargetInfo(TheHexagonTarget,
97                                          createHexagonMCSubtargetInfo);
98}
99