First draft of the sh4 port

src/sh4/lithium-codegen-sh4.h

Index: src/sh4/lithium-codegen-sh4.h
diff --git a/src/arm/lithium-codegen-arm.h b/src/sh4/lithium-codegen-sh4.h
similarity index 90%
copy from src/arm/lithium-codegen-arm.h
copy to src/sh4/lithium-codegen-sh4.h
index 921285b0d228c8d023038e2422e9772d735135b3..85353fe34c3bcc73612be844339675dc92543fca 100644
--- a/src/arm/lithium-codegen-arm.h
+++ b/src/sh4/lithium-codegen-sh4.h
@@ -1,4 +1,4 @@
-// Copyright 2012 the V8 project authors. All rights reserved.
+// Copyright 2011-2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
@@ -25,11 +25,11 @@
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-#ifndef V8_ARM_LITHIUM_CODEGEN_ARM_H_
-#define V8_ARM_LITHIUM_CODEGEN_ARM_H_
+#ifndef V8_SH4_LITHIUM_CODEGEN_SH4_H_
+#define V8_SH4_LITHIUM_CODEGEN_SH4_H_
 
-#include "arm/lithium-arm.h"
-#include "arm/lithium-gap-resolver-arm.h"
+#include "sh4/lithium-sh4.h"
+#include "sh4/lithium-gap-resolver-sh4.h"
 #include "deoptimizer.h"
 #include "safepoint-table.h"
 #include "scopes.h"
@@ -179,8 +179,10 @@ class LCodeGen BASE_EMBEDDED {
   Scope* scope() const { return scope_; }
   HGraph* graph() const { return chunk_->graph(); }
 
-  Register scratch0() { return r9; }
-  DwVfpRegister double_scratch0() { return kScratchDoubleReg; }
+  Register scratch0() { UNIMPLEMENTED();
+                        return r9; }
+  DwVfpRegister double_scratch0() { UNIMPLEMENTED();
+                                    return dr8; }
 
   int GetNextEmittedBlock(int block);
   LInstruction* GetNextInstruction();
@@ -213,19 +215,6 @@ class LCodeGen BASE_EMBEDDED {
     RECORD_SAFEPOINT_WITH_REGISTERS_AND_NO_ARGUMENTS
   };
 
-  void CallCode(
-      Handle<Code> code,
-      RelocInfo::Mode mode,
-      LInstruction* instr,
-      TargetAddressStorageMode storage_mode = CAN_INLINE_TARGET_ADDRESS);
-
-  void CallCodeGeneric(
-      Handle<Code> code,
-      RelocInfo::Mode mode,
-      LInstruction* instr,
-      SafepointMode safepoint_mode,
-      TargetAddressStorageMode storage_mode = CAN_INLINE_TARGET_ADDRESS);
-
   void CallRuntime(const Runtime::Function* function,
                    int num_arguments,
                    LInstruction* instr);
@@ -417,35 +406,11 @@ class LCodeGen BASE_EMBEDDED {
     PushSafepointRegistersScope(LCodeGen* codegen,
                                 Safepoint::Kind kind)
         : codegen_(codegen) {
-      ASSERT(codegen_->expected_safepoint_kind_ == Safepoint::kSimple);
-      codegen_->expected_safepoint_kind_ = kind;
-
-      switch (codegen_->expected_safepoint_kind_) {
-        case Safepoint::kWithRegisters:
-          codegen_->masm_->PushSafepointRegisters();
-          break;
-        case Safepoint::kWithRegistersAndDoubles:
-          codegen_->masm_->PushSafepointRegistersAndDoubles();
-          break;
-        default:
-          UNREACHABLE();
-      }
+      UNIMPLEMENTED();
     }
 
     ~PushSafepointRegistersScope() {
-      Safepoint::Kind kind = codegen_->expected_safepoint_kind_;
-      ASSERT((kind & Safepoint::kWithRegisters) != 0);
-      switch (kind) {
-        case Safepoint::kWithRegisters:
-          codegen_->masm_->PopSafepointRegisters();
-          break;
-        case Safepoint::kWithRegistersAndDoubles:
-          codegen_->masm_->PopSafepointRegistersAndDoubles();
-          break;
-        default:
-          UNREACHABLE();
-      }
-      codegen_->expected_safepoint_kind_ = Safepoint::kSimple;
+      UNIMPLEMENTED();
     }
 
    private:
@@ -491,4 +456,4 @@ class LDeferredCode: public ZoneObject {
 
 } }  // namespace v8::internal
 
-#endif  // V8_ARM_LITHIUM_CODEGEN_ARM_H_
+#endif  // V8_SH4_LITHIUM_CODEGEN_SH4_H_