• Home
  • Line#
  • Scopes#
  • Navigate#
  • Raw
  • Download
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 using namespace llvm;
27 
28 #define GET_INSTRINFO_MC_DESC
29 #include "XCoreGenInstrInfo.inc"
30 
31 #define GET_SUBTARGETINFO_MC_DESC
32 #include "XCoreGenSubtargetInfo.inc"
33 
34 #define GET_REGINFO_MC_DESC
35 #include "XCoreGenRegisterInfo.inc"
36 
createXCoreMCInstrInfo()37 static MCInstrInfo *createXCoreMCInstrInfo() {
38   MCInstrInfo *X = new MCInstrInfo();
39   InitXCoreMCInstrInfo(X);
40   return X;
41 }
42 
createXCoreMCRegisterInfo(StringRef TT)43 static MCRegisterInfo *createXCoreMCRegisterInfo(StringRef TT) {
44   MCRegisterInfo *X = new MCRegisterInfo();
45   InitXCoreMCRegisterInfo(X, XCore::LR);
46   return X;
47 }
48 
createXCoreMCSubtargetInfo(StringRef TT,StringRef CPU,StringRef FS)49 static 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 
createXCoreMCAsmInfo(const MCRegisterInfo & MRI,StringRef TT)56 static 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(nullptr, XCore::SP, 0);
62   MAI->addInitialFrameState(Inst);
63 
64   return MAI;
65 }
66 
createXCoreMCCodeGenInfo(StringRef TT,Reloc::Model RM,CodeModel::Model CM,CodeGenOpt::Level OL)67 static 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 
createXCoreMCInstPrinter(const Target & T,unsigned SyntaxVariant,const MCAsmInfo & MAI,const MCInstrInfo & MII,const MCRegisterInfo & MRI,const MCSubtargetInfo & STI)84 static 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 
XCoreTargetStreamer(MCStreamer & S)93 XCoreTargetStreamer::XCoreTargetStreamer(MCStreamer &S) : MCTargetStreamer(S) {}
~XCoreTargetStreamer()94 XCoreTargetStreamer::~XCoreTargetStreamer() {}
95 
96 namespace {
97 
98 class XCoreTargetAsmStreamer : public XCoreTargetStreamer {
99   formatted_raw_ostream &OS;
100 public:
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 
XCoreTargetAsmStreamer(MCStreamer & S,formatted_raw_ostream & OS)108 XCoreTargetAsmStreamer::XCoreTargetAsmStreamer(MCStreamer &S,
109                                                formatted_raw_ostream &OS)
110     : XCoreTargetStreamer(S), OS(OS) {}
111 
emitCCTopData(StringRef Name)112 void XCoreTargetAsmStreamer::emitCCTopData(StringRef Name) {
113   OS << "\t.cc_top " << Name << ".data," << Name << '\n';
114 }
115 
emitCCTopFunction(StringRef Name)116 void XCoreTargetAsmStreamer::emitCCTopFunction(StringRef Name) {
117   OS << "\t.cc_top " << Name << ".function," << Name << '\n';
118 }
119 
emitCCBottomData(StringRef Name)120 void XCoreTargetAsmStreamer::emitCCBottomData(StringRef Name) {
121   OS << "\t.cc_bottom " << Name << ".data\n";
122 }
123 
emitCCBottomFunction(StringRef Name)124 void XCoreTargetAsmStreamer::emitCCBottomFunction(StringRef Name) {
125   OS << "\t.cc_bottom " << Name << ".function\n";
126 }
127 }
128 
129 static MCStreamer *
createXCoreMCAsmStreamer(MCContext & Ctx,formatted_raw_ostream & OS,bool isVerboseAsm,bool useDwarfDirectory,MCInstPrinter * InstPrint,MCCodeEmitter * CE,MCAsmBackend * TAB,bool ShowInst)130 createXCoreMCAsmStreamer(MCContext &Ctx, formatted_raw_ostream &OS,
131                          bool isVerboseAsm, bool useDwarfDirectory,
132                          MCInstPrinter *InstPrint, MCCodeEmitter *CE,
133                          MCAsmBackend *TAB, bool ShowInst) {
134   MCStreamer *S = llvm::createAsmStreamer(
135       Ctx, OS, isVerboseAsm, useDwarfDirectory, InstPrint, CE, TAB, ShowInst);
136   new XCoreTargetAsmStreamer(*S, OS);
137   return S;
138 }
139 
140 // Force static initialization.
LLVMInitializeXCoreTargetMC()141 extern "C" void LLVMInitializeXCoreTargetMC() {
142   // Register the MC asm info.
143   RegisterMCAsmInfoFn X(TheXCoreTarget, createXCoreMCAsmInfo);
144 
145   // Register the MC codegen info.
146   TargetRegistry::RegisterMCCodeGenInfo(TheXCoreTarget,
147                                         createXCoreMCCodeGenInfo);
148 
149   // Register the MC instruction info.
150   TargetRegistry::RegisterMCInstrInfo(TheXCoreTarget, createXCoreMCInstrInfo);
151 
152   // Register the MC register info.
153   TargetRegistry::RegisterMCRegInfo(TheXCoreTarget, createXCoreMCRegisterInfo);
154 
155   // Register the MC subtarget info.
156   TargetRegistry::RegisterMCSubtargetInfo(TheXCoreTarget,
157                                           createXCoreMCSubtargetInfo);
158 
159   // Register the MCInstPrinter
160   TargetRegistry::RegisterMCInstPrinter(TheXCoreTarget,
161                                         createXCoreMCInstPrinter);
162 
163   TargetRegistry::RegisterAsmStreamer(TheXCoreTarget, createXCoreMCAsmStreamer);
164 }
165