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(StringRef 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   MCSubtargetInfo *X = new MCSubtargetInfo();
  52   InitXCoreMCSubtargetInfo(X, TT, CPU, FS);
  53   return X;
  54 }
  55
  56 static MCAsmInfo *createXCoreMCAsmInfo(const MCRegisterInfo &MRI,
  57                                        const Triple &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
  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 Triple &T,
  85                                                unsigned SyntaxVariant,
  86                                                const MCAsmInfo &MAI,
  87                                                const MCInstrInfo &MII,
  88                                                const MCRegisterInfo &MRI) {
  89   return new XCoreInstPrinter(MAI, MII, MRI);
  90 }
  91
  92 XCoreTargetStreamer::XCoreTargetStreamer(MCStreamer &S) : MCTargetStreamer(S) {}
  93 XCoreTargetStreamer::~XCoreTargetStreamer() {}
  94
  95 namespace {
  96
  97 class XCoreTargetAsmStreamer : public XCoreTargetStreamer {
  98   formatted_raw_ostream &OS;
  99 public:
 100   XCoreTargetAsmStreamer(MCStreamer &S, formatted_raw_ostream &OS);
 101   void emitCCTopData(StringRef Name) override;
 102   void emitCCTopFunction(StringRef Name) override;
 103   void emitCCBottomData(StringRef Name) override;
 104   void emitCCBottomFunction(StringRef Name) override;
 105 };
 106
 107 XCoreTargetAsmStreamer::XCoreTargetAsmStreamer(MCStreamer &S,
 108                                                formatted_raw_ostream &OS)
 109     : XCoreTargetStreamer(S), OS(OS) {}
 110
 111 void XCoreTargetAsmStreamer::emitCCTopData(StringRef Name) {
 112   OS << "\t.cc_top " << Name << ".data," << Name << '\n';
 113 }
 114
 115 void XCoreTargetAsmStreamer::emitCCTopFunction(StringRef Name) {
 116   OS << "\t.cc_top " << Name << ".function," << Name << '\n';
 117 }
 118
 119 void XCoreTargetAsmStreamer::emitCCBottomData(StringRef Name) {
 120   OS << "\t.cc_bottom " << Name << ".data\n";
 121 }
 122
 123 void XCoreTargetAsmStreamer::emitCCBottomFunction(StringRef Name) {
 124   OS << "\t.cc_bottom " << Name << ".function\n";
 125 }
 126 } // namespace
 127
 128 static MCTargetStreamer *createTargetAsmStreamer(MCStreamer &S,
 129                                                  formatted_raw_ostream &OS,
 130                                                  MCInstPrinter *InstPrint,
 131                                                  bool isVerboseAsm) {
 132   return new XCoreTargetAsmStreamer(S, OS);
 133 }
 134
 135 // Force static initialization.
 136 extern "C" void LLVMInitializeXCoreTargetMC() {
 137   // Register the MC asm info.
 138   RegisterMCAsmInfoFn X(TheXCoreTarget, createXCoreMCAsmInfo);
 139
 140   // Register the MC codegen info.
 141   TargetRegistry::RegisterMCCodeGenInfo(TheXCoreTarget,
 142                                         createXCoreMCCodeGenInfo);
 143
 144   // Register the MC instruction info.
 145   TargetRegistry::RegisterMCInstrInfo(TheXCoreTarget, createXCoreMCInstrInfo);
 146
 147   // Register the MC register info.
 148   TargetRegistry::RegisterMCRegInfo(TheXCoreTarget, createXCoreMCRegisterInfo);
 149
 150   // Register the MC subtarget info.
 151   TargetRegistry::RegisterMCSubtargetInfo(TheXCoreTarget,
 152                                           createXCoreMCSubtargetInfo);
 153
 154   // Register the MCInstPrinter
 155   TargetRegistry::RegisterMCInstPrinter(TheXCoreTarget,
 156                                         createXCoreMCInstPrinter);
 157
 158   TargetRegistry::RegisterAsmTargetStreamer(TheXCoreTarget,
 159                                             createTargetAsmStreamer);
 160 }