Home | History | Annotate | Download | only in MCTargetDesc 
      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 }
    160