First draft of the sh4 port

src/sh4/codegen-sh4.cc

Index: src/sh4/codegen-sh4.cc
diff --git a/src/sh4/codegen-sh4.cc b/src/sh4/codegen-sh4.cc
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+// 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.
+
+#include "v8.h"
+
+#if defined(V8_TARGET_ARCH_SH4)
+
+#include "codegen.h"
+#include "macro-assembler.h"
+
+namespace v8 {
+namespace internal {
+
+#define __ ACCESS_MASM(masm)
+
+UnaryMathFunction CreateTranscendentalFunction(TranscendentalCache::Type type) {
+  switch (type) {
+    case TranscendentalCache::SIN: return &sin;
+    case TranscendentalCache::COS: return &cos;
+    case TranscendentalCache::TAN: return &tan;
+    case TranscendentalCache::LOG: return &log;
+    default: UNIMPLEMENTED();
+  }
+  return NULL;
+}
+
+
+UnaryMathFunction CreateSqrtFunction() {
+  return &sqrt;
+}
+
+// -------------------------------------------------------------------------
+// Platform-specific RuntimeCallHelper functions.
+
+void StubRuntimeCallHelper::BeforeCall(MacroAssembler* masm) const {
+  masm->EnterFrame(StackFrame::INTERNAL);
+  ASSERT(!masm->has_frame());
+  masm->set_has_frame(true);
+}
+
+
+void StubRuntimeCallHelper::AfterCall(MacroAssembler* masm) const {
+  masm->LeaveFrame(StackFrame::INTERNAL);
+  ASSERT(masm->has_frame());
+  masm->set_has_frame(false);
+}
+
+
+// -------------------------------------------------------------------------
+// Code generators
+
+void ElementsTransitionGenerator::GenerateMapChangeElementsTransition(
+    MacroAssembler* masm) {
+  __ UNIMPLEMENTED_BREAK();
+}
+
+
+void ElementsTransitionGenerator::GenerateSmiToDouble(
+    MacroAssembler* masm, Label* fail) {
+  __ UNIMPLEMENTED_BREAK();
+}
+
+
+void ElementsTransitionGenerator::GenerateDoubleToObject(
+    MacroAssembler* masm, Label* fail) {
+  __ UNIMPLEMENTED_BREAK();
+}
+
+
+void StringCharLoadGenerator::Generate(MacroAssembler* masm,
+                                       Register string,
+                                       Register index,
+                                       Register result,
+                                       Label* call_runtime) {
+  __ UNIMPLEMENTED_BREAK();
+}
+
+#undef __
+
+} }  // namespace v8::internal
+
+#endif  // V8_TARGET_ARCH_SH4