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