MIPS: crankshaft support for api method calls

src/mips/code-stubs-mips.cc

 // Copyright 2012 the V8 project authors. 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.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 426 matching lines @@
                                     a0,  // receiver
     };
     static Representation representations[] = {
         Representation::Tagged(),  // context
         Representation::Tagged(),  // receiver
     };
     descriptor->register_param_count_ = 2;
     descriptor->register_params_ = registers;
     descriptor->param_representations_ = representations;
   }
+  {
+    CallInterfaceDescriptor* descriptor =
+        isolate->call_descriptor(Isolate::ApiFunctionCall);
+    static Register registers[] = { a0,  // callee
+                                    t0,  // call_data
+                                    a2,  // holder
+                                    a1,  // api_function_address
+                                    cp,  // context
+    };
+    static Representation representations[] = {
+        Representation::Tagged(),    // callee
+        Representation::Tagged(),    // call_data
+        Representation::Tagged(),    // holder
+        Representation::External(),  // api_function_address
+        Representation::Tagged(),    // context
+    };
+    descriptor->register_param_count_ = 5;
+    descriptor->register_params_ = registers;
+    descriptor->param_representations_ = representations;
+  }
 }
 
 
 #define __ ACCESS_MASM(masm)
 
 
 static void EmitIdenticalObjectComparison(MacroAssembler* masm,
                                           Label* slow,
                                           Condition cc);
 static void EmitSmiNonsmiComparison(MacroAssembler* masm,
@@ skipping 5097 matching lines @@
   __ bind(&fast_elements_case);
   GenerateCase(masm, FAST_ELEMENTS);
 }
 
 
 void CallApiFunctionStub::Generate(MacroAssembler* masm) {
   // ----------- S t a t e -------------
   //  -- a0                  : callee
   //  -- t0                  : call_data
   //  -- a2                  : holder
-  //  -- a3                  : api_function_address
-  //  -- a1                  : thunk_arg
+  //  -- a1                  : api_function_address
   //  -- cp                  : context
   //  --
   //  -- sp[0]               : last argument
   //  -- ...
   //  -- sp[(argc - 1)* 4]   : first argument
   //  -- sp[argc * 4]        : receiver
   // -----------------------------------
 
   Register callee = a0;
   Register call_data = t0;
   Register holder = a2;
-  Register api_function_address = a3;
-  Register thunk_arg = a1;
+  Register api_function_address = a1;
   Register context = cp;
 
   int argc = ArgumentBits::decode(bit_field_);
   bool restore_context = RestoreContextBits::decode(bit_field_);
   bool call_data_undefined = CallDataUndefinedBits::decode(bit_field_);
 
   typedef FunctionCallbackArguments FCA;
 
   STATIC_ASSERT(FCA::kContextSaveIndex == 6);
   STATIC_ASSERT(FCA::kCalleeIndex == 5);
@@ skipping 25 matching lines @@
   // Prepare arguments.
   __ mov(scratch, sp);
 
   // Allocate the v8::Arguments structure in the arguments' space since
   // it's not controlled by GC.
   const int kApiStackSpace = 4;
 
   FrameScope frame_scope(masm, StackFrame::MANUAL);
   __ EnterExitFrame(false, kApiStackSpace);
 
-  ASSERT(!thunk_arg.is(a0) && !api_function_address.is(a0) && !scratch.is(a0));
+  ASSERT(!api_function_address.is(a0) && !scratch.is(a0));
   // a0 = FunctionCallbackInfo&
   // Arguments is after the return address.
   __ Addu(a0, sp, Operand(1 * kPointerSize));
   // FunctionCallbackInfo::implicit_args_
   __ sw(scratch, MemOperand(a0, 0 * kPointerSize));
   // FunctionCallbackInfo::values_
   __ Addu(at, scratch, Operand((FCA::kArgsLength - 1 + argc) * kPointerSize));
   __ sw(at, MemOperand(a0, 1 * kPointerSize));
   // FunctionCallbackInfo::length_ = argc
   __ li(at, Operand(argc));
   __ sw(at, MemOperand(a0, 2 * kPointerSize));
   // FunctionCallbackInfo::is_construct_call = 0
   __ sw(zero_reg, MemOperand(a0, 3 * kPointerSize));
 
   const int kStackUnwindSpace = argc + FCA::kArgsLength + 1;
   Address thunk_address = FUNCTION_ADDR(&InvokeFunctionCallback);
   ExternalReference::Type thunk_type = ExternalReference::PROFILING_API_CALL;
   ApiFunction thunk_fun(thunk_address);
   ExternalReference thunk_ref = ExternalReference(&thunk_fun, thunk_type,
       masm->isolate());
 
   AllowExternalCallThatCantCauseGC scope(masm);
   MemOperand context_restore_operand(
       fp, (2 + FCA::kContextSaveIndex) * kPointerSize);
   MemOperand return_value_operand(fp,
                                   (2 + FCA::kReturnValueOffset) * kPointerSize);
 
   __ CallApiFunctionAndReturn(api_function_address,
                               thunk_ref,
-                              thunk_arg,
                               kStackUnwindSpace,
                               return_value_operand,
                               restore_context ?
                                   &context_restore_operand : NULL);
 }
 
 
 void CallApiGetterStub::Generate(MacroAssembler* masm) {
   // ----------- S t a t e -------------
   //  -- sp[0]                  : name
   //  -- sp[4 - kArgsLength*4]  : PropertyCallbackArguments object
   //  -- ...
-  //  -- a3                    : api_function_address
-  //  -- a2                    : thunk_last_arg
+  //  -- a2                     : api_function_address
   // -----------------------------------
 
-  Register api_function_address = a3;
-  Register thunk_last_arg = a2;
+  Register api_function_address = a2;
 
   __ mov(a0, sp);  // a0 = Handle<Name>
   __ Addu(a1, a0, Operand(1 * kPointerSize));  // a1 = PCA
 
   const int kApiStackSpace = 1;
   FrameScope frame_scope(masm, StackFrame::MANUAL);
   __ EnterExitFrame(false, kApiStackSpace);
 
   // Create PropertyAccessorInfo instance on the stack above the exit frame with
   // a1 (internal::Object** args_) as the data.
   __ sw(a1, MemOperand(sp, 1 * kPointerSize));
   __ Addu(a1, sp, Operand(1 * kPointerSize));  // a1 = AccessorInfo&
 
   const int kStackUnwindSpace = PropertyCallbackArguments::kArgsLength + 1;
 
   Address thunk_address = FUNCTION_ADDR(&InvokeAccessorGetterCallback);
   ExternalReference::Type thunk_type =
       ExternalReference::PROFILING_GETTER_CALL;
   ApiFunction thunk_fun(thunk_address);
   ExternalReference thunk_ref = ExternalReference(&thunk_fun, thunk_type,
       masm->isolate());
   __ CallApiFunctionAndReturn(api_function_address,
                               thunk_ref,
-                              thunk_last_arg,
                               kStackUnwindSpace,
                               MemOperand(fp, 6 * kPointerSize),
                               NULL);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_MIPS