Experimental: merge from bleeding_edge. Merge up to and including...

src/assembler.h

Index: src/assembler.h
===================================================================
--- src/assembler.h	(revision 1085)
+++ src/assembler.h	(working copy)
@@ -183,14 +183,19 @@
   // Apply a relocation by delta bytes
   INLINE(void apply(int delta));
 
-  // Read/modify the code target in the branch/call instruction this relocation
-  // applies to; can only be called if IsCodeTarget(rmode_)
+  // Read/modify the code target in the branch/call instruction
+  // this relocation applies to;
+  // can only be called if IsCodeTarget(rmode_) || rmode_ == RUNTIME_ENTRY
   INLINE(Address target_address());
   INLINE(void set_target_address(Address target));
   INLINE(Object* target_object());
   INLINE(Object** target_object_address());
   INLINE(void set_target_object(Object* target));
 
+  // Read the address of the word containing the target_address. Can only
+  // be called if IsCodeTarget(rmode_) || rmode_ == RUNTIME_ENTRY.
+  INLINE(Address target_address_address());
+
   // Read/modify the reference in the instruction this relocation
   // applies to; can only be called if rmode_ is external_reference
   INLINE(Address* target_reference_address());
@@ -395,6 +400,9 @@
   // Static variable StackGuard::address_of_limit()
   static ExternalReference address_of_stack_guard_limit();
 
+  // Static variable RegExpStack::limit_address()
+  static ExternalReference address_of_regexp_stack_limit();
+
   // Function Debug::Break()
   static ExternalReference debug_break();