Merge 6800:7180 from the bleeding edge branch to the experimental/gc branch.

src/arm/simulator-arm.h

Index: src/arm/simulator-arm.h
===================================================================
--- src/arm/simulator-arm.h	(revision 7180)
+++ src/arm/simulator-arm.h	(working copy)
@@ -48,10 +48,16 @@
 #define CALL_GENERATED_CODE(entry, p0, p1, p2, p3, p4) \
   (entry(p0, p1, p2, p3, p4))
 
-// Call the generated regexp code directly. The entry function pointer should
-// expect seven int/pointer sized arguments and return an int.
+typedef int (*arm_regexp_matcher)(String*, int, const byte*, const byte*,
+                                  void*, int*, Address, int);
+
+
+// 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) \
-  (entry(p0, p1, p2, p3, NULL, p4, p5, p6))
+  (FUNCTION_CAST<arm_regexp_matcher>(entry)(p0, p1, p2, p3, NULL, p4, p5, p6))
 
 #define TRY_CATCH_FROM_ADDRESS(try_catch_address) \
   (reinterpret_cast<TryCatch*>(try_catch_address))
@@ -362,8 +368,7 @@
       FUNCTION_ADDR(entry), 5, p0, p1, p2, p3, p4))
 
 #define CALL_GENERATED_REGEXP_CODE(entry, p0, p1, p2, p3, p4, p5, p6) \
-  Simulator::current()->Call( \
-      FUNCTION_ADDR(entry), 8, p0, p1, p2, p3, NULL, p4, p5, p6)
+  Simulator::current()->Call(entry, 8, p0, p1, p2, p3, NULL, p4, p5, p6)
 
 #define TRY_CATCH_FROM_ADDRESS(try_catch_address) \
   try_catch_address == \