[Isolates] Merge 6700:7030 from bleeding_edge to isolates.

src/assembler.h

 // Copyright (c) 1994-2006 Sun Microsystems Inc.
 // 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.
 //
@@ skipping 159 matching lines @@
   // in the relocation information. Two types of source positions are collected
   // "position" (RelocMode position) and "statement position" (RelocMode
   // statement_position). The "position" is collected at places in the source
   // code which are of interest when making stack traces to pin-point the source
   // location of a stack frame as close as possible. The "statement position" is
   // collected at the beginning at each statement, and is used to indicate
   // possible break locations. kNoPosition is used to indicate an
   // invalid/uninitialized position value.
   static const int kNoPosition = -1;
 
+  // This string is used to add padding comments to the reloc info in cases
+  // where we are not sure to have enough space for patching in during
+  // lazy deoptimization. This is the case if we have indirect calls for which
+  // we do not normally record relocation info.
+  static const char* kFillerCommentString;
+
+  // The minimum size of a comment is equal to three bytes for the extra tagged
+  // pc + the tag for the data, and kPointerSize for the actual pointer to the
+  // comment.
+  static const int kMinRelocCommentSize = 3 + kPointerSize;
+
+  // The maximum size for a call instruction including pc-jump.
+  static const int kMaxCallSize = 6;
+
   enum Mode {
     // Please note the order is important (see IsCodeTarget, IsGCRelocMode).
     CONSTRUCT_CALL,  // code target that is a call to a JavaScript constructor.
-    CODE_TARGET_CONTEXT,  // Code target used for contextual loads.
+    CODE_TARGET_CONTEXT,  // Code target used for contextual loads and stores.
     DEBUG_BREAK,  // Code target for the debugger statement.
     CODE_TARGET,  // Code target which is not any of the above.
     EMBEDDED_OBJECT,
     GLOBAL_PROPERTY_CELL,
 
     // Everything after runtime_entry (inclusive) is not GC'ed.
     RUNTIME_ENTRY,
     JS_RETURN,  // Marks start of the ExitJSFrame code.
     COMMENT,
     POSITION,  // See comment for kNoPosition above.
@@ skipping 265 matching lines @@
 
 
 // An ExternalReference represents a C++ address used in the generated
 // code. All references to C++ functions and variables must be encapsulated in
 // an ExternalReference instance. This is done in order to track the origin of
 // all external references in the code so that they can be bound to the correct
 // addresses when deserializing a heap.
 class ExternalReference BASE_EMBEDDED {
  public:
   // Used in the simulator to support different native api calls.
-  //
-  // BUILTIN_CALL - builtin call.
-  // MaybeObject* f(v8::internal::Arguments).
-  //
-  // FP_RETURN_CALL - builtin call that returns floating point.
-  // double f(double, double).
-  //
-  // DIRECT_CALL - direct call to API function native callback
-  // from generated code.
-  // Handle<Value> f(v8::Arguments&)
-  //
   enum Type {
+    // Builtin call.
+    // MaybeObject* f(v8::internal::Arguments).
     BUILTIN_CALL,  // default
+
+    // Builtin call that returns floating point.
+    // double f(double, double).
     FP_RETURN_CALL,
-    DIRECT_CALL
+
+    // Direct call to API function callback.
+    // Handle<Value> f(v8::Arguments&)
+    DIRECT_API_CALL,
+
+    // Direct call to accessor getter callback.
+    // Handle<value> f(Local<String> property, AccessorInfo& info)
+    DIRECT_GETTER_CALL
   };
 
   typedef void* ExternalReferenceRedirector(void* original, Type type);
 
   explicit ExternalReference(Builtins::CFunctionId id);
 
   explicit ExternalReference(ApiFunction* ptr, Type type);
 
   explicit ExternalReference(Builtins::Name name);
 
@@ skipping 77 matching lines @@
   static ExternalReference handle_scope_level_address();
 
   static ExternalReference scheduled_exception_address();
 
   // Static variables containing common double constants.
   static ExternalReference address_of_min_int();
   static ExternalReference address_of_one_half();
   static ExternalReference address_of_minus_zero();
   static ExternalReference address_of_negative_infinity();
 
+  static ExternalReference math_sin_double_function();
+  static ExternalReference math_cos_double_function();
+  static ExternalReference math_log_double_function();
+
   Address address() const {return reinterpret_cast<Address>(address_);}
 
 #ifdef ENABLE_DEBUGGER_SUPPORT
   // Function Debug::Break()
   static ExternalReference debug_break();
 
   // Used to check if single stepping is enabled in generated code.
   static ExternalReference debug_step_in_fp_address();
 #endif
 
@@ skipping 180 matching lines @@
   return num_bits_set;
 }
 
 // Computes pow(x, y) with the special cases in the spec for Math.pow.
 double power_double_int(double x, int y);
 double power_double_double(double x, double y);
 
 } }  // namespace v8::internal
 
 #endif  // V8_ASSEMBLER_H_