First draft of the sh4 port

src/sh4/map-sh4.h

Index: src/sh4/map-sh4.h
diff --git a/test/mjsunit/this.js b/src/sh4/map-sh4.h
similarity index 69%
copy from test/mjsunit/this.js
copy to src/sh4/map-sh4.h
index 890dea4f25394a8a5d2370dbb6d0832c4bcf2916..0faaa234235f495c69e8ae343b5e0da297452b97 100644
--- a/test/mjsunit/this.js
+++ b/src/sh4/map-sh4.h
@@ -1,4 +1,4 @@
-// Copyright 2008 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:
@@ -25,22 +25,33 @@
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-function f() { return this; }
-
-assertFalse(this == null);  // the global object shouldn't be null or undefined
-assertEquals('[object global]', String(this));
-
-assertTrue(this === this);
-assertTrue(this === (function() { return this; })());
-assertTrue(this === f());
-
-var x = {}, y = {};
-x.f = y.f = f;
-assertFalse(x === f());
-assertFalse(y === f());
-assertTrue(x === x.f());
-assertTrue(x === x[new String('f')]());
-assertTrue(y === y.f(), "y.f()");
-assertTrue(y === y[new String('f')]());
-assertFalse(x === y.f());
-assertFalse(y === x.f());
+// Mapping of ARM registers to SH4 registers.
+// Include this file the first time for defining the mapping.
+// Include this file a second time for undefining it.
+#ifndef MAP_SH4
+// First include, we define the mapping
+#define MAP_SH4
+#define r8 "should be cp"
+#define ip sh4_r10
+#define lr pr
+#define pc "to be checked"
+#define r10 "should be roots"
+#define r11 "Unexpected"
+#define r12 "Unexpected"
+#define r13 "Unexpected"
+#define r14 "Unexpected"
+#define r15 "Unexpected"
+#else
+// Second include, we define the mapping
+#undef MAP_SH4
+#undef r8
+#undef ip
+#undef lr
+#undef pc
+#undef r10
+#undef r11
+#undef r12
+#undef r13
+#undef r14
+#undef r15
+#endif