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