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 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
  37 static MCInstrInfo *createXCoreMCInstrInfo() {
  38   MCInstrInfo *X = new MCInstrInfo();
  39   InitXCoreMCInstrInfo(X);
  40   return X;
  41 }
  42
  43 static MCRegisterInfo *createXCoreMCRegisterInfo(const Triple &TT) {
  44   MCRegisterInfo *X = new MCRegisterInfo();
  45   InitXCoreMCRegisterInfo(X, XCore::LR);
  46   return X;
  47 }
  48
  49 static MCSubtargetInfo *
  50 createXCoreMCSubtargetInfo(const Triple &TT, StringRef CPU, StringRef FS) {
  51   return createXCoreMCSubtargetInfoImpl(TT, CPU, FS);
  52 }
  53
  54 static MCAsmInfo *createXCoreMCAsmInfo(const MCRegisterInfo &MRI,
  55                                        const Triple &TT) {
  56   MCAsmInfo *MAI = new XCoreMCAsmInfo(TT);
  57
  58   // Initial state of the frame pointer is SP.
  59   MCCFIInstruction Inst = MCCFIInstruction::createDefCfa(nullptr, XCore::SP, 0);
  60   MAI->addInitialFrameState(Inst);
  61
  62   return MAI;
  63 }
  64
  65 static MCCodeGenInfo *createXCoreMCCodeGenInfo(const Triple &TT,
  66                                                Reloc::Model RM,
  67                                                CodeModel::Model CM,
  68                                                CodeGenOpt::Level OL) {
  69   MCCodeGenInfo *X = new MCCodeGenInfo();
  70   if (RM == Reloc::Default) {
  71     RM = Reloc::Static;
  72   }
  73   if (CM == CodeModel::Default) {
  74     CM = CodeModel::Small;
  75   }
  76   if (CM != CodeModel::Small && CM != CodeModel::Large)
  77     report_fatal_error("Target only supports CodeModel Small or Large");
  78
  79   X->initMCCodeGenInfo(RM, CM, OL);
  80   return X;
  81 }
  82
  83 static MCInstPrinter *createXCoreMCInstPrinter(const Triple &T,
  84                                                unsigned SyntaxVariant,
  85                                                const MCAsmInfo &MAI,
  86                                                const MCInstrInfo &MII,
  87                                                const MCRegisterInfo &MRI) {
  88   return new XCoreInstPrinter(MAI, MII, MRI);
  89 }
  90
  91 XCoreTargetStreamer::XCoreTargetStreamer(MCStreamer &S) : MCTargetStreamer(S) {}
  92 XCoreTargetStreamer::~XCoreTargetStreamer() {}
  93
  94 namespace {
  95
  96 class XCoreTargetAsmStreamer : public XCoreTargetStreamer {
  97   formatted_raw_ostream &OS;
  98 public:
  99   XCoreTargetAsmStreamer(MCStreamer &S, formatted_raw_ostream &OS);
 100   void emitCCTopData(StringRef Name) override;
 101   void emitCCTopFunction(StringRef Name) override;
 102   void emitCCBottomData(StringRef Name) override;
 103   void emitCCBottomFunction(StringRef Name) override;
 104 };
 105
 106 XCoreTargetAsmStreamer::XCoreTargetAsmStreamer(MCStreamer &S,
 107                                                formatted_raw_ostream &OS)
 108     : XCoreTargetStreamer(S), OS(OS) {}
 109
 110 void XCoreTargetAsmStreamer::emitCCTopData(StringRef Name) {
 111   OS << "\t.cc_top " << Name << ".data," << Name << '\n';
 112 }
 113
 114 void XCoreTargetAsmStreamer::emitCCTopFunction(StringRef Name) {
 115   OS << "\t.cc_top " << Name << ".function," << Name << '\n';
 116 }
 117
 118 void XCoreTargetAsmStreamer::emitCCBottomData(StringRef Name) {
 119   OS << "\t.cc_bottom " << Name << ".data\n";
 120 }
 121
 122 void XCoreTargetAsmStreamer::emitCCBottomFunction(StringRef Name) {
 123   OS << "\t.cc_bottom " << Name << ".function\n";
 124 }
 125 }
 126
 127 static MCTargetStreamer *createTargetAsmStreamer(MCStreamer &S,
 128                                                  formatted_raw_ostream &OS,
 129                                                  MCInstPrinter *InstPrint,
 130                                                  bool isVerboseAsm) {
 131   return new XCoreTargetAsmStreamer(S, OS);
 132 }
 133
 134 // Force static initialization.
 135 extern "C" void LLVMInitializeXCoreTargetMC() {
 136   // Register the MC asm info.
 137   RegisterMCAsmInfoFn X(TheXCoreTarget, createXCoreMCAsmInfo);
 138
 139   // Register the MC codegen info.
 140   TargetRegistry::RegisterMCCodeGenInfo(TheXCoreTarget,
 141                                         createXCoreMCCodeGenInfo);
 142
 143   // Register the MC instruction info.
 144   TargetRegistry::RegisterMCInstrInfo(TheXCoreTarget, createXCoreMCInstrInfo);
 145
 146   // Register the MC register info.
 147   TargetRegistry::RegisterMCRegInfo(TheXCoreTarget, createXCoreMCRegisterInfo);
 148
 149   // Register the MC subtarget info.
 150   TargetRegistry::RegisterMCSubtargetInfo(TheXCoreTarget,
 151                                           createXCoreMCSubtargetInfo);
 152
 153   // Register the MCInstPrinter
 154   TargetRegistry::RegisterMCInstPrinter(TheXCoreTarget,
 155                                         createXCoreMCInstPrinter);
 156
 157   TargetRegistry::RegisterAsmTargetStreamer(TheXCoreTarget,
 158                                             createTargetAsmStreamer);
 159 }