stub-cache-ia32.cc.svn-base

Google浏览器V8内核代码

  // Stub never generated for non-global objects that require access
  // checks.
  ASSERT(receiver->IsJSGlobalObject() || !receiver->IsAccessCheckNeeded());

  __ pop(ebx);  // remove the return address
  __ push(Operand(esp, 0));  // receiver
  __ push(ecx);  // name
  __ push(eax);  // value
  __ push(ebx);  // restore return address

  // Do tail-call to the runtime system.
  ExternalReference store_ic_property =
      ExternalReference(IC_Utility(IC::kStoreInterceptorProperty));
  __ TailCallRuntime(store_ic_property, 3);

  // Handle store cache miss.
  __ bind(&miss);
  __ mov(Operand(ecx), Immediate(Handle<String>(name)));  // restore name
  Handle<Code> ic(Builtins::builtin(Builtins::StoreIC_Miss));
  __ jmp(ic, RelocInfo::CODE_TARGET);

  // Return the generated code.
  return GetCode(INTERCEPTOR);
}


Object* KeyedStoreStubCompiler::CompileStoreField(JSObject* object,
                                                  int index,
                                                  Map* transition,
                                                  String* name) {
  // ----------- S t a t e -------------
  //  -- eax    : value
  //  -- esp[0] : return address
  //  -- esp[4] : key
  //  -- esp[8] : receiver
  // -----------------------------------
  HandleScope scope;
  Label miss;

  __ IncrementCounter(&Counters::keyed_store_field, 1);

  // Get the name from the stack.
  __ mov(ecx, Operand(esp, 1 * kPointerSize));
  // Check that the name has not changed.
  __ cmp(Operand(ecx), Immediate(Handle<String>(name)));
  __ j(not_equal, &miss, not_taken);

  // Get the object from the stack.
  __ mov(ebx, Operand(esp, 2 * kPointerSize));

  // Generate store field code.  Trashes the name register.
  GenerateStoreField(masm(), object, index, transition, ebx, ecx, edx, &miss);

  // Handle store cache miss.
  __ bind(&miss);
  __ DecrementCounter(&Counters::keyed_store_field, 1);
  Handle<Code> ic(Builtins::builtin(Builtins::KeyedStoreIC_Miss));
  __ jmp(ic, RelocInfo::CODE_TARGET);

  // Return the generated code.
  return GetCode(transition == NULL ? FIELD : MAP_TRANSITION);
}


Object* LoadStubCompiler::CompileLoadField(JSObject* object,
                                           JSObject* holder,
                                           int index) {
  // ----------- S t a t e -------------
  //  -- ecx    : name
  //  -- esp[0] : return address
  //  -- esp[4] : receiver
  // -----------------------------------

  HandleScope scope;
  Label miss;

  __ mov(eax, (Operand(esp, kPointerSize)));
  GenerateLoadField(masm(), object, holder, eax, ebx, edx, index, &miss);
  __ bind(&miss);
  GenerateLoadMiss(masm(), Code::LOAD_IC);

  // Return the generated code.
  return GetCode(FIELD);
}


Object* LoadStubCompiler::CompileLoadCallback(JSObject* object,
                                              JSObject* holder,
                                              AccessorInfo* callback) {
  // ----------- S t a t e -------------
  //  -- ecx    : name
  //  -- esp[0] : return address
  //  -- esp[4] : receiver
  // -----------------------------------

  HandleScope scope;
  Label miss;

  __ mov(eax, (Operand(esp, kPointerSize)));
  GenerateLoadCallback(masm(), object, holder, eax, ecx, ebx,
                       edx, callback, &miss);
  __ bind(&miss);
  GenerateLoadMiss(masm(), Code::LOAD_IC);

  // Return the generated code.
  return GetCode(CALLBACKS);
}


Object* LoadStubCompiler::CompileLoadConstant(JSObject* object,
                                              JSObject* holder,
                                              Object* value) {
  // ----------- S t a t e -------------
  //  -- ecx    : name
  //  -- esp[0] : return address
  //  -- esp[4] : receiver
  // -----------------------------------

  HandleScope scope;
  Label miss;

  __ mov(eax, (Operand(esp, kPointerSize)));
  GenerateLoadConstant(masm(), object, holder, eax, ebx, edx, value, &miss);
  __ bind(&miss);
  GenerateLoadMiss(masm(), Code::LOAD_IC);

  // Return the generated code.
  return GetCode(CONSTANT_FUNCTION);
}


Object* LoadStubCompiler::CompileLoadInterceptor(JSObject* receiver,
                                                 JSObject* holder,
                                                 String* name) {
  // ----------- S t a t e -------------
  //  -- ecx    : name
  //  -- esp[0] : return address
  //  -- esp[4] : receiver
  // -----------------------------------
  HandleScope scope;
  Label miss;

  __ mov(eax, (Operand(esp, kPointerSize)));
  GenerateLoadInterceptor(masm(), receiver, holder, eax, ecx, edx, ebx, &miss);
  __ bind(&miss);
  GenerateLoadMiss(masm(), Code::LOAD_IC);

  // Return the generated code.
  return GetCode(INTERCEPTOR);
}


Object* KeyedLoadStubCompiler::CompileLoadField(String* name,
                                                JSObject* receiver,
                                                JSObject* holder,
                                                int index) {
  // ----------- S t a t e -------------
  //  -- esp[0] : return address
  //  -- esp[4] : name
  //  -- esp[8] : receiver
  // -----------------------------------
  HandleScope scope;
  Label miss;

  __ mov(eax, (Operand(esp, kPointerSize)));
  __ mov(ecx, (Operand(esp, 2 * kPointerSize)));
  __ IncrementCounter(&Counters::keyed_load_field, 1);

  // Check that the name has not changed.
  __ cmp(Operand(eax), Immediate(Handle<String>(name)));
  __ j(not_equal, &miss, not_taken);

  GenerateLoadField(masm(), receiver, holder, ecx, ebx, edx, index, &miss);
  __ bind(&miss);
  __ DecrementCounter(&Counters::keyed_load_field, 1);
  GenerateLoadMiss(masm(), Code::KEYED_LOAD_IC);

  // Return the generated code.
  return GetCode(FIELD);
}


Object* KeyedLoadStubCompiler::CompileLoadCallback(String* name,
                                                   JSObject* receiver,
                                                   JSObject* holder,
                                                   AccessorInfo* callback) {
  // ----------- S t a t e -------------
  //  -- esp[0] : return address
  //  -- esp[4] : name
  //  -- esp[8] : receiver
  // -----------------------------------
  HandleScope scope;
  Label miss;

  __ mov(eax, (Operand(esp, kPointerSize)));
  __ mov(ecx, (Operand(esp, 2 * kPointerSize)));
  __ IncrementCounter(&Counters::keyed_load_callback, 1);

  // Check that the name has not changed.
  __ cmp(Operand(eax), Immediate(Handle<String>(name)));
  __ j(not_equal, &miss, not_taken);

  GenerateLoadCallback(masm(), receiver, holder, ecx, eax, ebx, edx,
                       callback, &miss);
  __ bind(&miss);
  __ DecrementCounter(&Counters::keyed_load_callback, 1);
  GenerateLoadMiss(masm(), Code::KEYED_LOAD_IC);

  // Return the generated code.
  return GetCode(CALLBACKS);
}


Object* KeyedLoadStubCompiler::CompileLoadConstant(String* name,
                                                   JSObject* receiver,
                                                   JSObject* holder,
                                                   Object* value) {
  // ----------- S t a t e -------------
  //  -- esp[0] : return address
  //  -- esp[4] : name
  //  -- esp[8] : receiver
  // -----------------------------------
  HandleScope scope;
  Label miss;

  __ mov(eax, (Operand(esp, kPointerSize)));
  __ mov(ecx, (Operand(esp, 2 * kPointerSize)));
  __ IncrementCounter(&Counters::keyed_load_constant_function, 1);

  // Check that the name has not changed.
  __ cmp(Operand(eax), Immediate(Handle<String>(name)));
  __ j(not_equal, &miss, not_taken);

  GenerateLoadConstant(masm(), receiver, holder, ecx, ebx, edx, value, &miss);
  __ bind(&miss);
  __ DecrementCounter(&Counters::keyed_load_constant_function, 1);
  GenerateLoadMiss(masm(), Code::KEYED_LOAD_IC);

  // Return the generated code.
  return GetCode(CONSTANT_FUNCTION);
}


Object* KeyedLoadStubCompiler::CompileLoadInterceptor(JSObject* receiver,
                                                      JSObject* holder,
                                                      String* name) {
  // ----------- S t a t e -------------
  //  -- esp[0] : return address
  //  -- esp[4] : name
  //  -- esp[8] : receiver
  // -----------------------------------
  HandleScope scope;
  Label miss;

  __ mov(eax, (Operand(esp, kPointerSize)));
  __ mov(ecx, (Operand(esp, 2 * kPointerSize)));
  __ IncrementCounter(&Counters::keyed_load_interceptor, 1);

  // Check that the name has not changed.
  __ cmp(Operand(eax), Immediate(Handle<String>(name)));
  __ j(not_equal, &miss, not_taken);

  GenerateLoadInterceptor(masm(), receiver, holder, ecx, eax, edx, ebx, &miss);
  __ bind(&miss);
  __ DecrementCounter(&Counters::keyed_load_interceptor, 1);
  GenerateLoadMiss(masm(), Code::KEYED_LOAD_IC);

  // Return the generated code.
  return GetCode(INTERCEPTOR);
}




Object* KeyedLoadStubCompiler::CompileLoadArrayLength(String* name) {
  // ----------- S t a t e -------------
  //  -- esp[0] : return address
  //  -- esp[4] : name
  //  -- esp[8] : receiver
  // -----------------------------------
  HandleScope scope;
  Label miss;

  __ mov(eax, (Operand(esp, kPointerSize)));
  __ mov(ecx, (Operand(esp, 2 * kPointerSize)));
  __ IncrementCounter(&Counters::keyed_load_array_length, 1);

  // Check that the name has not changed.
  __ cmp(Operand(eax), Immediate(Handle<String>(name)));
  __ j(not_equal, &miss, not_taken);

  GenerateLoadArrayLength(masm(), ecx, edx, &miss);
  __ bind(&miss);
  __ DecrementCounter(&Counters::keyed_load_array_length, 1);
  GenerateLoadMiss(masm(), Code::KEYED_LOAD_IC);

  // Return the generated code.
  return GetCode(CALLBACKS);
}


Object* KeyedLoadStubCompiler::CompileLoadShortStringLength(String* name) {
  // ----------- S t a t e -------------
  //  -- esp[0] : return address
  //  -- esp[4] : name
  //  -- esp[8] : receiver
  // -----------------------------------
  HandleScope scope;
  Label miss;

  __ mov(eax, (Operand(esp, kPointerSize)));
  __ mov(ecx, (Operand(esp, 2 * kPointerSize)));
  __ IncrementCounter(&Counters::keyed_load_string_length, 1);

  // Check that the name has not changed.
  __ cmp(Operand(eax), Immediate(Handle<String>(name)));
  __ j(not_equal, &miss, not_taken);

  GenerateLoadShortStringLength(masm(), ecx, edx, &miss);
  __ bind(&miss);
  __ DecrementCounter(&Counters::keyed_load_string_length, 1);
  GenerateLoadMiss(masm(), Code::KEYED_LOAD_IC);

  // Return the generated code.
  return GetCode(CALLBACKS);
}


Object* KeyedLoadStubCompiler::CompileLoadMediumStringLength(String* name) {
  // ----------- S t a t e -------------
  //  -- esp[0] : return address
  //  -- esp[4] : name
  //  -- esp[8] : receiver
  // -----------------------------------
  HandleScope scope;
  Label miss;

  __ mov(eax, (Operand(esp, kPointerSize)));
  __ mov(ecx, (Operand(esp, 2 * kPointerSize)));
  __ IncrementCounter(&Counters::keyed_load_string_length, 1);

  // Check that the name has not changed.
  __ cmp(Operand(eax), Immediate(Handle<String>(name)));
  __ j(not_equal, &miss, not_taken);

  GenerateLoadMediumStringLength(masm(), ecx, edx, &miss);
  __ bind(&miss);
  __ DecrementCounter(&Counters::keyed_load_string_length, 1);
  GenerateLoadMiss(masm(), Code::KEYED_LOAD_IC);

  // Return the generated code.
  return GetCode(CALLBACKS);
}


Object* KeyedLoadStubCompiler::CompileLoadLongStringLength(String* name) {
  // ----------- S t a t e -------------
  //  -- esp[0] : return address
  //  -- esp[4] : name
  //  -- esp[8] : receiver
  // -----------------------------------
  HandleScope scope;
  Label miss;

  __ mov(eax, (Operand(esp, kPointerSize)));
  __ mov(ecx, (Operand(esp, 2 * kPointerSize)));
  __ IncrementCounter(&Counters::keyed_load_string_length, 1);

  // Check that the name has not changed.
  __ cmp(Operand(eax), Immediate(Handle<String>(name)));
  __ j(not_equal, &miss, not_taken);

  GenerateLoadLongStringLength(masm(), ecx, edx, &miss);
  __ bind(&miss);
  __ DecrementCounter(&Counters::keyed_load_string_length, 1);
  GenerateLoadMiss(masm(), Code::KEYED_LOAD_IC);

  // Return the generated code.
  return GetCode(CALLBACKS);
}


Object* KeyedLoadStubCompiler::CompileLoadFunctionPrototype(String* name) {
  // ----------- S t a t e -------------
  //  -- esp[0] : return address
  //  -- esp[4] : name
  //  -- esp[8] : receiver
  // -----------------------------------
  HandleScope scope;
  Label miss;

  __ mov(eax, (Operand(esp, kPointerSize)));
  __ mov(ecx, (Operand(esp, 2 * kPointerSize)));
  __ IncrementCounter(&Counters::keyed_load_function_prototype, 1);

  // Check that the name has not changed.
  __ cmp(Operand(eax), Immediate(Handle<String>(name)));
  __ j(not_equal, &miss, not_taken);

  GenerateLoadFunctionPrototype(masm(), ecx, edx, ebx, &miss);
  __ bind(&miss);
  __ DecrementCounter(&Counters::keyed_load_function_prototype, 1);
  GenerateLoadMiss(masm(), Code::KEYED_LOAD_IC);

  // Return the generated code.
  return GetCode(CALLBACKS);
}


#undef __

} }  // namespace v8::internal