Support pass-through of stub caller arguments

src/ia32/code-stubs-ia32.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 29 matching lines @@
 namespace v8 {
 namespace internal {
 
 
 void KeyedLoadFastElementStub::InitializeInterfaceDescriptor(
     Isolate* isolate,
     CodeStubInterfaceDescriptor* descriptor) {
   static Register registers[] = { edx, ecx };
   descriptor->register_param_count_ = 2;
   descriptor->register_params_ = registers;
+  descriptor->stack_parameter_count_ = NULL;
   descriptor->deoptimization_handler_ =
       FUNCTION_ADDR(KeyedLoadIC_MissFromStubFailure);
 }
 
 
 #define __ ACCESS_MASM(masm)
 
 void ToNumberStub::Generate(MacroAssembler* masm) {
   // The ToNumber stub takes one argument in eax.
   Label check_heap_number, call_builtin;
@@ skipping 7567 matching lines @@
   __ pop(edx);
   __ ret(0);
 }
 
 
 void StubFailureTrampolineStub::Generate(MacroAssembler* masm) {
   ASSERT(!Serializer::enabled());
   bool save_fp_regs = CpuFeatures::IsSupported(SSE2);
   CEntryStub ces(1, save_fp_regs ? kSaveFPRegs : kDontSaveFPRegs);
   __ call(ces.GetCode(), RelocInfo::CODE_TARGET);
+  __ mov(ebx, MemOperand(ebp, StandardFrameConstants::kMarkerOffset -
+                          2 * kPointerSize));

[mvstanton, 2013/02/04 08:54:26]

Would it make sense to having something like a
StubFailureTrampolineConstants::kArgumentCountOffset for this expression?

[danno, 2013/02/04 10:22:24]

Done.

   masm->LeaveFrame(StackFrame::STUB_FAILURE_TRAMPOLINE);
-  __ ret(0);  // Return to IC Miss stub, continuation still on stack.
+  __ pop(ecx);
+  __ lea(esp, MemOperand(esp, ebx, times_pointer_size,
+                         extra_expression_stack_count_ * kPointerSize));
+  __ jmp(ecx);  // Return to IC Miss stub, continuation still on stack.
 }
 
 
 void ProfileEntryHookStub::MaybeCallEntryHook(MacroAssembler* masm) {
   if (entry_hook_ != NULL) {
     ProfileEntryHookStub stub;
     masm->CallStub(&stub);
   }
 }
 
@@ skipping 19 matching lines @@
   // Restore ecx.
   __ pop(ecx);
   __ ret(0);
 }
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_IA32