XCoreMCTargetDesc.cpp revision 36b56886974eae4f9c5ebc96befd3e7bfe5de338 
1//===-- XCoreMCTargetDesc.cpp - XCore 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 XCore specific target descriptions.
11//
12//===----------------------------------------------------------------------===//
13
14#include "XCoreMCTargetDesc.h"
15#include "InstPrinter/XCoreInstPrinter.h"
16#include "XCoreMCAsmInfo.h"
17#include "XCoreTargetStreamer.h"
18#include "llvm/MC/MCCodeGenInfo.h"
19#include "llvm/MC/MCInstrInfo.h"
20#include "llvm/MC/MCRegisterInfo.h"
21#include "llvm/MC/MCSubtargetInfo.h"
22#include "llvm/Support/ErrorHandling.h"
23#include "llvm/Support/FormattedStream.h"
24#include "llvm/Support/TargetRegistry.h"
25
26#define GET_INSTRINFO_MC_DESC
27#include "XCoreGenInstrInfo.inc"
28
29#define GET_SUBTARGETINFO_MC_DESC
30#include "XCoreGenSubtargetInfo.inc"
31
32#define GET_REGINFO_MC_DESC
33#include "XCoreGenRegisterInfo.inc"
34
35using namespace llvm;
36
37static MCInstrInfo *createXCoreMCInstrInfo() {
38  MCInstrInfo *X = new MCInstrInfo();
39  InitXCoreMCInstrInfo(X);
40  return X;
41}
42
43static MCRegisterInfo *createXCoreMCRegisterInfo(StringRef TT) {
44  MCRegisterInfo *X = new MCRegisterInfo();
45  InitXCoreMCRegisterInfo(X, XCore::LR);
46  return X;
47}
48
49static MCSubtargetInfo *createXCoreMCSubtargetInfo(StringRef TT, StringRef CPU,
50                                                   StringRef FS) {
51  MCSubtargetInfo *X = new MCSubtargetInfo();
52  InitXCoreMCSubtargetInfo(X, TT, CPU, FS);
53  return X;
54}
55
56static MCAsmInfo *createXCoreMCAsmInfo(const MCRegisterInfo &MRI,
57                                       StringRef TT) {
58  MCAsmInfo *MAI = new XCoreMCAsmInfo(TT);
59
60  // Initial state of the frame pointer is SP.
61  MCCFIInstruction Inst = MCCFIInstruction::createDefCfa(0, XCore::SP, 0);
62  MAI->addInitialFrameState(Inst);
63
64  return MAI;
65}
66
67static MCCodeGenInfo *createXCoreMCCodeGenInfo(StringRef TT, Reloc::Model RM,
68                                               CodeModel::Model CM,
69                                               CodeGenOpt::Level OL) {
70  MCCodeGenInfo *X = new MCCodeGenInfo();
71  if (RM == Reloc::Default) {
72    RM = Reloc::Static;
73  }
74  if (CM == CodeModel::Default) {
75    CM = CodeModel::Small;
76  }
77  if (CM != CodeModel::Small && CM != CodeModel::Large)
78    report_fatal_error("Target only supports CodeModel Small or Large");
79
80  X->InitMCCodeGenInfo(RM, CM, OL);
81  return X;
82}
83
84static MCInstPrinter *createXCoreMCInstPrinter(const Target &T,
85                                               unsigned SyntaxVariant,
86                                               const MCAsmInfo &MAI,
87                                               const MCInstrInfo &MII,
88                                               const MCRegisterInfo &MRI,
89                                               const MCSubtargetInfo &STI) {
90  return new XCoreInstPrinter(MAI, MII, MRI);
91}
92
93XCoreTargetStreamer::XCoreTargetStreamer(MCStreamer &S) : MCTargetStreamer(S) {}
94XCoreTargetStreamer::~XCoreTargetStreamer() {}
95
96namespace {
97
98class XCoreTargetAsmStreamer : public XCoreTargetStreamer {
99  formatted_raw_ostream &OS;
100public:
101  XCoreTargetAsmStreamer(MCStreamer &S, formatted_raw_ostream &OS);
102  virtual void emitCCTopData(StringRef Name) override;
103  virtual void emitCCTopFunction(StringRef Name) override;
104  virtual void emitCCBottomData(StringRef Name) override;
105  virtual void emitCCBottomFunction(StringRef Name) override;
106};
107
108XCoreTargetAsmStreamer::XCoreTargetAsmStreamer(MCStreamer &S,
109                                               formatted_raw_ostream &OS)
110    : XCoreTargetStreamer(S), OS(OS) {}
111
112void XCoreTargetAsmStreamer::emitCCTopData(StringRef Name) {
113  OS << "\t.cc_top " << Name << ".data," << Name << '\n';
114}
115
116void XCoreTargetAsmStreamer::emitCCTopFunction(StringRef Name) {
117  OS << "\t.cc_top " << Name << ".function," << Name << '\n';
118}
119
120void XCoreTargetAsmStreamer::emitCCBottomData(StringRef Name) {
121  OS << "\t.cc_bottom " << Name << ".data\n";
122}
123
124void XCoreTargetAsmStreamer::emitCCBottomFunction(StringRef Name) {
125  OS << "\t.cc_bottom " << Name << ".function\n";
126}
127}
128
129static MCStreamer *
130createXCoreMCAsmStreamer(MCContext &Ctx, formatted_raw_ostream &OS,
131                         bool isVerboseAsm, bool useCFI, bool useDwarfDirectory,
132                         MCInstPrinter *InstPrint, MCCodeEmitter *CE,
133                         MCAsmBackend *TAB, bool ShowInst) {
134  MCStreamer *S =
135      llvm::createAsmStreamer(Ctx, OS, isVerboseAsm, useCFI, useDwarfDirectory,
136                              InstPrint, CE, TAB, ShowInst);
137  new XCoreTargetAsmStreamer(*S, OS);
138  return S;
139}
140
141// Force static initialization.
142extern "C" void LLVMInitializeXCoreTargetMC() {
143  // Register the MC asm info.
144  RegisterMCAsmInfoFn X(TheXCoreTarget, createXCoreMCAsmInfo);
145
146  // Register the MC codegen info.
147  TargetRegistry::RegisterMCCodeGenInfo(TheXCoreTarget,
148                                        createXCoreMCCodeGenInfo);
149
150  // Register the MC instruction info.
151  TargetRegistry::RegisterMCInstrInfo(TheXCoreTarget, createXCoreMCInstrInfo);
152
153  // Register the MC register info.
154  TargetRegistry::RegisterMCRegInfo(TheXCoreTarget, createXCoreMCRegisterInfo);
155
156  // Register the MC subtarget info.
157  TargetRegistry::RegisterMCSubtargetInfo(TheXCoreTarget,
158                                          createXCoreMCSubtargetInfo);
159
160  // Register the MCInstPrinter
161  TargetRegistry::RegisterMCInstPrinter(TheXCoreTarget,
162                                        createXCoreMCInstPrinter);
163
164  TargetRegistry::RegisterAsmStreamer(TheXCoreTarget, createXCoreMCAsmStreamer);
165}
166