1 files changed, 160 insertions, 0 deletions
diff --git a/contrib/llvm/lib/Target/SystemZ/MCTargetDesc/SystemZMCTargetDesc.cpp b/contrib/llvm/lib/Target/SystemZ/MCTargetDesc/SystemZMCTargetDesc.cpp
new file mode 100644
index 0000000..49a7f47
--- /dev/null
+++ b/contrib/llvm/lib/Target/SystemZ/MCTargetDesc/SystemZMCTargetDesc.cpp
@@ -0,0 +1,160 @@
+//===-- SystemZMCTargetDesc.cpp - SystemZ target descriptions -------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "SystemZMCTargetDesc.h"
+#include "InstPrinter/SystemZInstPrinter.h"
+#include "SystemZMCAsmInfo.h"
+#include "llvm/MC/MCCodeGenInfo.h"
+#include "llvm/MC/MCInstrInfo.h"
+#include "llvm/MC/MCStreamer.h"
+#include "llvm/MC/MCSubtargetInfo.h"
+#include "llvm/Support/TargetRegistry.h"
+
+#define GET_INSTRINFO_MC_DESC
+#include "SystemZGenInstrInfo.inc"
+
+#define GET_SUBTARGETINFO_MC_DESC
+#include "SystemZGenSubtargetInfo.inc"
+
+#define GET_REGINFO_MC_DESC
+#include "SystemZGenRegisterInfo.inc"
+
+using namespace llvm;
+
+static MCAsmInfo *createSystemZMCAsmInfo(const Target &T, StringRef TT) {
+  MCAsmInfo *MAI = new SystemZMCAsmInfo(T, TT);
+  MachineLocation FPDst(MachineLocation::VirtualFP);
+  MachineLocation FPSrc(SystemZ::R15D, -SystemZMC::CFAOffsetFromInitialSP);
+  MAI->addInitialFrameState(0, FPDst, FPSrc);
+  return MAI;
+}
+
+static MCInstrInfo *createSystemZMCInstrInfo() {
+  MCInstrInfo *X = new MCInstrInfo();
+  InitSystemZMCInstrInfo(X);
+  return X;
+}
+
+static MCRegisterInfo *createSystemZMCRegisterInfo(StringRef TT) {
+  MCRegisterInfo *X = new MCRegisterInfo();
+  InitSystemZMCRegisterInfo(X, SystemZ::R14D);
+  return X;
+}
+
+static MCSubtargetInfo *createSystemZMCSubtargetInfo(StringRef TT,
+                                                     StringRef CPU,
+                                                     StringRef FS) {
+  MCSubtargetInfo *X = new MCSubtargetInfo();
+  InitSystemZMCSubtargetInfo(X, TT, CPU, FS);
+  return X;
+}
+
+static MCCodeGenInfo *createSystemZMCCodeGenInfo(StringRef TT, Reloc::Model RM,
+                                                 CodeModel::Model CM,
+                                                 CodeGenOpt::Level OL) {
+  MCCodeGenInfo *X = new MCCodeGenInfo();
+
+  // Static code is suitable for use in a dynamic executable; there is no
+  // separate DynamicNoPIC model.
+  if (RM == Reloc::Default || RM == Reloc::DynamicNoPIC)
+    RM = Reloc::Static;
+
+  // For SystemZ we define the models as follows:
+  //
+  // Small:  BRASL can call any function and will use a stub if necessary.
+  //         Locally-binding symbols will always be in range of LARL.
+  //
+  // Medium: BRASL can call any function and will use a stub if necessary.
+  //         GOT slots and locally-defined text will always be in range
+  //         of LARL, but other symbols might not be.
+  //
+  // Large:  Equivalent to Medium for now.
+  //
+  // Kernel: Equivalent to Medium for now.
+  //
+  // This means that any PIC module smaller than 4GB meets the
+  // requirements of Small, so Small seems like the best default there.
+  //
+  // All symbols bind locally in a non-PIC module, so the choice is less
+  // obvious.  There are two cases:
+  //
+  // - When creating an executable, PLTs and copy relocations allow
+  //   us to treat external symbols as part of the executable.
+  //   Any executable smaller than 4GB meets the requirements of Small,
+  //   so that seems like the best default.
+  //
+  // - When creating JIT code, stubs will be in range of BRASL if the
+  //   image is less than 4GB in size.  GOT entries will likewise be
+  //   in range of LARL.  However, the JIT environment has no equivalent
+  //   of copy relocs, so locally-binding data symbols might not be in
+  //   the range of LARL.  We need the Medium model in that case.
+  if (CM == CodeModel::Default)
+    CM = CodeModel::Small;
+  else if (CM == CodeModel::JITDefault)
+    CM = RM == Reloc::PIC_ ? CodeModel::Small : CodeModel::Medium;
+  X->InitMCCodeGenInfo(RM, CM, OL);
+  return X;
+}
+
+static MCInstPrinter *createSystemZMCInstPrinter(const Target &T,
+                                                 unsigned SyntaxVariant,
+                                                 const MCAsmInfo &MAI,
+                                                 const MCInstrInfo &MII,
+                                                 const MCRegisterInfo &MRI,
+                                                 const MCSubtargetInfo &STI) {
+  return new SystemZInstPrinter(MAI, MII, MRI);
+}
+
+static MCStreamer *createSystemZMCObjectStreamer(const Target &T, StringRef TT,
+                                                 MCContext &Ctx,
+                                                 MCAsmBackend &MAB,
+                                                 raw_ostream &OS,
+                                                 MCCodeEmitter *Emitter,
+                                                 bool RelaxAll,
+                                                 bool NoExecStack) {
+  return createELFStreamer(Ctx, MAB, OS, Emitter, RelaxAll, NoExecStack);
+}
+
+extern "C" void LLVMInitializeSystemZTargetMC() {
+  // Register the MCAsmInfo.
+  TargetRegistry::RegisterMCAsmInfo(TheSystemZTarget,
+                                    createSystemZMCAsmInfo);
+
+  // Register the MCCodeGenInfo.
+  TargetRegistry::RegisterMCCodeGenInfo(TheSystemZTarget,
+                                        createSystemZMCCodeGenInfo);
+
+  // Register the MCCodeEmitter.
+  TargetRegistry::RegisterMCCodeEmitter(TheSystemZTarget,
+					createSystemZMCCodeEmitter);
+
+  // Register the MCInstrInfo.
+  TargetRegistry::RegisterMCInstrInfo(TheSystemZTarget,
+                                      createSystemZMCInstrInfo);
+
+  // Register the MCRegisterInfo.
+  TargetRegistry::RegisterMCRegInfo(TheSystemZTarget,
+                                    createSystemZMCRegisterInfo);
+
+  // Register the MCSubtargetInfo.
+  TargetRegistry::RegisterMCSubtargetInfo(TheSystemZTarget,
+                                          createSystemZMCSubtargetInfo);
+
+  // Register the MCAsmBackend.
+  TargetRegistry::RegisterMCAsmBackend(TheSystemZTarget,
+                                       createSystemZMCAsmBackend);
+
+  // Register the MCInstPrinter.
+  TargetRegistry::RegisterMCInstPrinter(TheSystemZTarget,
+                                        createSystemZMCInstPrinter);
+
+  // Register the MCObjectStreamer;
+  TargetRegistry::RegisterMCObjectStreamer(TheSystemZTarget,
+                                           createSystemZMCObjectStreamer);
+}