X87: [Interpreter] Add CallRuntime support to the interpreter.

src/x87/code-stubs-x87.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #if V8_TARGET_ARCH_X87
 
 #include "src/base/bits.h"
 #include "src/bootstrapper.h"
 #include "src/code-stubs.h"
 #include "src/codegen.h"
@@ skipping 2119 matching lines @@
 }
 
 
 void CEntryStub::Generate(MacroAssembler* masm) {
   // eax: number of arguments including receiver
   // ebx: pointer to C function  (C callee-saved)
   // ebp: frame pointer  (restored after C call)
   // esp: stack pointer  (restored after C call)
   // esi: current context (C callee-saved)
   // edi: JS function of the caller (C callee-saved)
+  //
+  // If argv_in_register():
+  // ecx: pointer to the first argument
 
   ProfileEntryHookStub::MaybeCallEntryHook(masm);
 
   // Enter the exit frame that transitions from JavaScript to C++.
-  __ EnterExitFrame(save_doubles());
+  if (argv_in_register()) {
+    DCHECK(!save_doubles());
+    __ EnterApiExitFrame(3);
+
+    // Move argc and argv into the correct registers.
+    __ mov(esi, ecx);
+    __ mov(edi, eax);
+  } else {
+    __ EnterExitFrame(save_doubles());
+  }
 
   // ebx: pointer to C function  (C callee-saved)
   // ebp: frame pointer  (restored after C call)
   // esp: stack pointer  (restored after C call)
   // edi: number of arguments including receiver  (C callee-saved)
   // esi: pointer to the first argument (C callee-saved)
 
   // Result returned in eax, or eax+edx if result size is 2.
 
   // Check stack alignment.
@@ skipping 24 matching lines @@
         Isolate::kPendingExceptionAddress, isolate());
     __ cmp(edx, Operand::StaticVariable(pending_exception_address));
     // Cannot use check here as it attempts to generate call into runtime.
     __ j(equal, &okay, Label::kNear);
     __ int3();
     __ bind(&okay);
     __ pop(edx);
   }
 
   // Exit the JavaScript to C++ exit frame.
-  __ LeaveExitFrame(save_doubles());
+  __ LeaveExitFrame(save_doubles(), !argv_in_register());
   __ ret(0);
 
   // Handling of exception.
   __ bind(&exception_returned);
 
   ExternalReference pending_handler_context_address(
       Isolate::kPendingHandlerContextAddress, isolate());
   ExternalReference pending_handler_code_address(
       Isolate::kPendingHandlerCodeAddress, isolate());
   ExternalReference pending_handler_offset_address(
@@ skipping 3301 matching lines @@
                            Operand(ebp, 7 * kPointerSize), NULL);
 }
 
 
 #undef __
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_X87