SH4 support

src/processor/stackwalker_selftest.cc

Index: src/processor/stackwalker_selftest.cc
===================================================================
--- src/processor/stackwalker_selftest.cc	(revision 1435)
+++ src/processor/stackwalker_selftest.cc	(working copy)
@@ -341,6 +341,14 @@
 
   StackwalkerSPARC stackwalker = StackwalkerSPARC(NULL, &context, &memory,
                                                   NULL, NULL, &resolver);
+#elif defined(__SH4__)
+  MDRawContextSH4 context = MDRawContextSH4();
+  context.spc = GetPC();
+  context.sgr = GetSP();
+
+  StackwalkerSH4 stackwalker = StackwalkerSH4(NULL, &context, &memory, NULL,
+                                              NULL, &resolver);
+
 #endif  // __i386__ || __ppc__ || __sparc__
 
   CallStack stack;