X-Git-Url: http://plrg.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FTarget%2FHexagon%2FMCTargetDesc%2FHexagonMCTargetDesc.cpp;h=9a292577a8f3d83cadccbf4f1cd4afa7988b9c05;hb=311fb07b3bb96292c8d0cc2d0d49576e1321e420;hp=a78c7f992009b7d4e0278b1d49824e78e9e487dd;hpb=1c60a4e36b77d5d08c747c21def9b59d909237a1;p=oota-llvm.git

diff --git a/lib/Target/Hexagon/MCTargetDesc/HexagonMCTargetDesc.cpp b/lib/Target/Hexagon/MCTargetDesc/HexagonMCTargetDesc.cpp
index a78c7f99200..9a292577a8f 100644
--- a/lib/Target/Hexagon/MCTargetDesc/HexagonMCTargetDesc.cpp
+++ b/lib/Target/Hexagon/MCTargetDesc/HexagonMCTargetDesc.cpp
@@ -12,15 +12,20 @@
 //===----------------------------------------------------------------------===//
 
 #include "HexagonMCTargetDesc.h"
+#include "Hexagon.h"
 #include "HexagonMCAsmInfo.h"
+#include "HexagonMCELFStreamer.h"
 #include "MCTargetDesc/HexagonInstPrinter.h"
 #include "llvm/MC/MCCodeGenInfo.h"
+#include "llvm/MC/MCContext.h"
 #include "llvm/MC/MCELFStreamer.h"
 #include "llvm/MC/MCInstrInfo.h"
+#include "llvm/MC/MCObjectStreamer.h"
 #include "llvm/MC/MCRegisterInfo.h"
 #include "llvm/MC/MCStreamer.h"
 #include "llvm/MC/MCSubtargetInfo.h"
 #include "llvm/MC/MachineLocation.h"
+#include "llvm/Support/ELF.h"
 #include "llvm/Support/ErrorHandling.h"
 #include "llvm/Support/TargetRegistry.h"
 
@@ -35,27 +40,115 @@ using namespace llvm;
 #define GET_REGINFO_MC_DESC
 #include "HexagonGenRegisterInfo.inc"
 
+cl::opt<bool> llvm::HexagonDisableCompound
+  ("mno-compound",
+   cl::desc("Disable looking for compound instructions for Hexagon"));
+
+cl::opt<bool> llvm::HexagonDisableDuplex
+  ("mno-pairing",
+   cl::desc("Disable looking for duplex instructions for Hexagon"));
+
+StringRef HEXAGON_MC::selectHexagonCPU(const Triple &TT, StringRef CPU) {
+  if (CPU.empty())
+    CPU = "hexagonv60";
+  return CPU;
+}
+
 MCInstrInfo *llvm::createHexagonMCInstrInfo() {
   MCInstrInfo *X = new MCInstrInfo();
   InitHexagonMCInstrInfo(X);
   return X;
 }
 
-static MCRegisterInfo *createHexagonMCRegisterInfo(StringRef TT) {
+static MCRegisterInfo *createHexagonMCRegisterInfo(const Triple &TT) {
   MCRegisterInfo *X = new MCRegisterInfo();
   InitHexagonMCRegisterInfo(X, Hexagon::R0);
   return X;
 }
 
 static MCSubtargetInfo *
-createHexagonMCSubtargetInfo(StringRef TT, StringRef CPU, StringRef FS) {
-  MCSubtargetInfo *X = new MCSubtargetInfo();
-  InitHexagonMCSubtargetInfo(X, TT, CPU, FS);
-  return X;
+createHexagonMCSubtargetInfo(const Triple &TT, StringRef CPU, StringRef FS) {
+  CPU = HEXAGON_MC::selectHexagonCPU(TT, CPU);
+  return createHexagonMCSubtargetInfoImpl(TT, CPU, FS);
+}
+
+namespace {
+class HexagonTargetAsmStreamer : public HexagonTargetStreamer {
+public:
+  HexagonTargetAsmStreamer(MCStreamer &S,
+                           formatted_raw_ostream &, bool,
+                           MCInstPrinter &)
+      : HexagonTargetStreamer(S) {}
+  void prettyPrintAsm(MCInstPrinter &InstPrinter, raw_ostream &OS,
+                      const MCInst &Inst, const MCSubtargetInfo &STI) override {
+    assert(HexagonMCInstrInfo::isBundle(Inst));
+    assert(HexagonMCInstrInfo::bundleSize(Inst) <= HEXAGON_PACKET_SIZE);
+    std::string Buffer;
+    {
+      raw_string_ostream TempStream(Buffer);
+      InstPrinter.printInst(&Inst, TempStream, "", STI);
+    }
+    StringRef Contents(Buffer);
+    auto PacketBundle = Contents.rsplit('\n');
+    auto HeadTail = PacketBundle.first.split('\n');
+    StringRef Separator = "\n";
+    StringRef Indent = "\t\t";
+    OS << "\t{\n";
+    while (!HeadTail.first.empty()) {
+      StringRef InstTxt;
+      auto Duplex = HeadTail.first.split('\v');
+      if (!Duplex.second.empty()) {
+        OS << Indent << Duplex.first << Separator;
+        InstTxt = Duplex.second;
+      } else if (!HeadTail.first.trim().startswith("immext")) {
+        InstTxt = Duplex.first;
+      }
+      if (!InstTxt.empty())
+        OS << Indent << InstTxt << Separator;
+      HeadTail = HeadTail.second.split('\n');
+    }
+    OS << "\t}" << PacketBundle.second;
+  }
+};
+}
+
+namespace {
+class HexagonTargetELFStreamer : public HexagonTargetStreamer {
+public:
+  MCELFStreamer &getStreamer() {
+    return static_cast<MCELFStreamer &>(Streamer);
+  }
+  HexagonTargetELFStreamer(MCStreamer &S, MCSubtargetInfo const &STI)
+      : HexagonTargetStreamer(S) {
+    auto Bits = STI.getFeatureBits();
+    unsigned Flags;
+    if (Bits.to_ullong() & llvm::Hexagon::ArchV5)
+      Flags = ELF::EF_HEXAGON_MACH_V5;
+    else
+      Flags = ELF::EF_HEXAGON_MACH_V4;
+    getStreamer().getAssembler().setELFHeaderEFlags(Flags);
+  }
+  void EmitCommonSymbolSorted(MCSymbol *Symbol, uint64_t Size,
+                              unsigned ByteAlignment,
+                              unsigned AccessSize) override {
+    HexagonMCELFStreamer &HexagonELFStreamer =
+        static_cast<HexagonMCELFStreamer &>(getStreamer());
+    HexagonELFStreamer.HexagonMCEmitCommonSymbol(Symbol, Size, ByteAlignment,
+                                                 AccessSize);
+  }
+  void EmitLocalCommonSymbolSorted(MCSymbol *Symbol, uint64_t Size,
+                                   unsigned ByteAlignment,
+                                   unsigned AccessSize) override {
+    HexagonMCELFStreamer &HexagonELFStreamer =
+        static_cast<HexagonMCELFStreamer &>(getStreamer());
+    HexagonELFStreamer.HexagonMCEmitLocalCommonSymbol(
+        Symbol, Size, ByteAlignment, AccessSize);
+  }
+};
 }
 
 static MCAsmInfo *createHexagonMCAsmInfo(const MCRegisterInfo &MRI,
-                                         StringRef TT) {
+                                         const Triple &TT) {
   MCAsmInfo *MAI = new HexagonMCAsmInfo(TT);
 
   // VirtualFP = (R30 + #0).
@@ -66,21 +159,44 @@ static MCAsmInfo *createHexagonMCAsmInfo(const MCRegisterInfo &MRI,
   return MAI;
 }
 
-static MCCodeGenInfo *createHexagonMCCodeGenInfo(StringRef TT, Reloc::Model RM,
+static MCCodeGenInfo *createHexagonMCCodeGenInfo(const Triple &TT,
+                                                 Reloc::Model RM,
                                                  CodeModel::Model CM,
                                                  CodeGenOpt::Level OL) {
   MCCodeGenInfo *X = new MCCodeGenInfo();
-  // For the time being, use static relocations, since there's really no
-  // support for PIC yet.
-  X->InitMCCodeGenInfo(Reloc::Static, CM, OL);
+  if (RM == Reloc::Default)
+    RM = Reloc::Static;
+  X->initMCCodeGenInfo(RM, CM, OL);
   return X;
 }
-static MCInstPrinter *createHexagonMCInstPrinter(unsigned SyntaxVariant,
+
+static MCInstPrinter *createHexagonMCInstPrinter(const Triple &T,
+                                                 unsigned SyntaxVariant,
                                                  const MCAsmInfo &MAI,
                                                  const MCInstrInfo &MII,
-                                                 const MCRegisterInfo &MRI,
-                                                 const MCSubtargetInfo &STI) {
-    return new HexagonInstPrinter(MAI, MII, MRI);
+                                                 const MCRegisterInfo &MRI) {
+  if (SyntaxVariant == 0)
+    return (new HexagonInstPrinter(MAI, MII, MRI));
+  else
+    return nullptr;
+}
+
+static MCTargetStreamer *createMCAsmTargetStreamer(MCStreamer &S,
+                                                   formatted_raw_ostream &OS,
+                                                   MCInstPrinter *InstPrint,
+                                                   bool IsVerboseAsm) {
+  return new HexagonTargetAsmStreamer(S,  OS, IsVerboseAsm, *InstPrint);
+}
+
+static MCStreamer *createMCStreamer(Triple const &T, MCContext &Context,
+                                    MCAsmBackend &MAB, raw_pwrite_stream &OS,
+                                    MCCodeEmitter *Emitter, bool RelaxAll) {
+  return createHexagonELFStreamer(Context, MAB, OS, Emitter);
+}
+
+static MCTargetStreamer *
+createHexagonObjectTargetStreamer(MCStreamer &S, MCSubtargetInfo const &STI) {
+  return new HexagonTargetELFStreamer(S, STI);
 }
 
 // Force static initialization.
@@ -108,11 +224,21 @@ extern "C" void LLVMInitializeHexagonTargetMC() {
   TargetRegistry::RegisterMCCodeEmitter(TheHexagonTarget,
                                         createHexagonMCCodeEmitter);
 
+  // Register the asm backend
+  TargetRegistry::RegisterMCAsmBackend(TheHexagonTarget,
+                                       createHexagonAsmBackend);
+
+  // Register the obj streamer
+  TargetRegistry::RegisterELFStreamer(TheHexagonTarget, createMCStreamer);
+
+  // Register the asm streamer
+  TargetRegistry::RegisterAsmTargetStreamer(TheHexagonTarget,
+                                            createMCAsmTargetStreamer);
+
   // Register the MC Inst Printer
   TargetRegistry::RegisterMCInstPrinter(TheHexagonTarget,
                                         createHexagonMCInstPrinter);
 
-  // Register the asm backend
-  TargetRegistry::RegisterMCAsmBackend(TheHexagonTarget,
-                                       createHexagonAsmBackend);
+  TargetRegistry::RegisterObjectTargetStreamer(
+      TheHexagonTarget, createHexagonObjectTargetStreamer);
 }