First draft of the sh4 port

src/sh4/simulator-sh4.h

-// 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:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
 //       with the distribution.
 //     * Neither the name of Google Inc. nor the names of its
 //       contributors may be used to endorse or promote products derived
 //       from this software without specific prior written permission.
 //
 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (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_IA32_SIMULATOR_IA32_H_
-#define V8_IA32_SIMULATOR_IA32_H_
+#ifndef V8_SH4_SIMULATOR_SH4_H_
+#define V8_SH4_SIMULATOR_SH4_H_
 
 #include "allocation.h"
 
 namespace v8 {
 namespace internal {
 
-// Since there is no simulator for the ia32 architecture the only thing we can
-// do is to call the entry directly.
+// When running without a simulator we call the entry directly.
 #define CALL_GENERATED_CODE(entry, p0, p1, p2, p3, p4) \
   (entry(p0, p1, p2, p3, p4))
 
-
-typedef int (*regexp_matcher)(String*, int, const byte*,
-                              const byte*, int*, int, Address, int, Isolate*);
-
-// Call the generated regexp code directly. The code at the entry address should
-// expect eight int/pointer sized arguments and return an int.
-#define CALL_GENERATED_REGEXP_CODE(entry, p0, p1, p2, p3, p4, p5, p6, p7, p8) \
-  (FUNCTION_CAST<regexp_matcher>(entry)(p0, p1, p2, p3, p4, p5, p6, p7, p8))
+typedef int (*sh4_regexp_matcher)(String*, int, const byte*, const byte*,
+                                  void*, int*, int, Address, int, Isolate*);
 
 
+// Call the generated regexp code directly. The code at the entry address
+// should act as a function matching the type arm_regexp_matcher.
+// The fifth argument is a dummy that reserves the space used for
+// the return address added by the ExitFrame in native calls.
+#define CALL_GENERATED_REGEXP_CODE(entry, p0, p1, p2, p3, p4, p5, p6, p7, p8) \
+  (FUNCTION_CAST<sh4_regexp_matcher>(entry)(                              \
+      p0, p1, p2, p3, NULL, p4, p5, p6, p7, p8))
+
 #define TRY_CATCH_FROM_ADDRESS(try_catch_address) \
-  (reinterpret_cast<TryCatch*>(try_catch_address))
+  reinterpret_cast<TryCatch*>(try_catch_address)
 
 // The stack limit beyond which we will throw stack overflow errors in
-// generated code. Because generated code on ia32 uses the C stack, we
+// generated code. Because generated code on sh4 uses the C stack, we
 // just use the C stack limit.
 class SimulatorStack : public v8::internal::AllStatic {
  public:
-  static inline uintptr_t JsLimitFromCLimit(Isolate* isolate,
+  static inline uintptr_t JsLimitFromCLimit(v8::internal::Isolate* isolate,
                                             uintptr_t c_limit) {
     USE(isolate);
     return c_limit;
   }
 
   static inline uintptr_t RegisterCTryCatch(uintptr_t try_catch_address) {
     return try_catch_address;
   }
 
   static inline void UnregisterCTryCatch() { }
 };
 
 } }  // namespace v8::internal
 
-#endif  // V8_IA32_SIMULATOR_IA32_H_
+#endif  // V8_SH4_SIMULATOR_SH4_H_