lib/Target/XCore/MCTargetDesc/XCoreMCTargetDesc.cpp

   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
  35 using namespace llvm;
  36
  37 static MCInstrInfo *createXCoreMCInstrInfo() {
  38   MCInstrInfo *X = new MCInstrInfo();
  39   InitXCoreMCInstrInfo(X);
  40   return X;
  41 }
  42
  43 static MCRegisterInfo *createXCoreMCRegisterInfo(StringRef TT) {
  44   MCRegisterInfo *X = new MCRegisterInfo();
  45   InitXCoreMCRegisterInfo(X, XCore::LR);
  46   return X;
  47 }
  48
  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
  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(0, XCore::SP, 0);
  62   MAI->addInitialFrameState(Inst);
  63
  64   return MAI;
  65 }
  66
  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
  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
  93 XCoreTargetStreamer::XCoreTargetStreamer(MCStreamer &S) : MCTargetStreamer(S) {}
  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
 108 XCoreTargetAsmStreamer::XCoreTargetAsmStreamer(MCStreamer &S,
 109                                                formatted_raw_ostream &OS)
 110     : XCoreTargetStreamer(S), OS(OS) {}
 111
 112 void XCoreTargetAsmStreamer::emitCCTopData(StringRef Name) {
 113   OS << "\t.cc_top " << Name << ".data," << Name << '\n';
 114 }
 115
 116 void XCoreTargetAsmStreamer::emitCCTopFunction(StringRef Name) {
 117   OS << "\t.cc_top " << Name << ".function," << Name << '\n';
 118 }
 119
 120 void XCoreTargetAsmStreamer::emitCCBottomData(StringRef Name) {
 121   OS << "\t.cc_bottom " << Name << ".data\n";
 122 }
 123
 124 void XCoreTargetAsmStreamer::emitCCBottomFunction(StringRef Name) {
 125   OS << "\t.cc_bottom " << Name << ".function\n";
 126 }
 127 }
 128
 129 static MCStreamer *
 130 createXCoreMCAsmStreamer(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.
 142 extern "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 }