Change the IA32 stack handler layout so that the handler address does...

src/ia32/macro-assembler-ia32.cc

 // Copyright 2006-2008 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 449 matching lines @@
     push(ebp);
   } else {
     ASSERT(try_location == IN_JS_ENTRY);
     // The parameter pointer is meaningless here and ebp does not
     // point to a JS frame. So we save NULL for both pp and ebp. We
     // expect the code throwing an exception to check ebp before
     // dereferencing it to restore the context.
     push(Immediate(StackHandler::ENTRY));
     push(Immediate(0));  // NULL frame pointer
   }
-  // Cached TOS.
-  mov(eax, Operand::StaticVariable(ExternalReference(Top::k_handler_address)));
-  // Link this handler.
+  // Save the current handler as the next handler.
+  push(Operand::StaticVariable(ExternalReference(Top::k_handler_address)));
+  // Link this handler as the new current one.
   mov(Operand::StaticVariable(ExternalReference(Top::k_handler_address)), esp);
 }
 
 
 Register MacroAssembler::CheckMaps(JSObject* object, Register object_reg,
                                    JSObject* holder, Register holder_reg,
                                    Register scratch,
                                    Label* miss) {
   // Make sure there's no overlap between scratch and the other
   // registers.
@@ skipping 557 matching lines @@
   // Indicate that code has changed.
   CPU::FlushICache(address_, size_);
 
   // Check that the code was patched as expected.
   ASSERT(masm_.pc_ == address_ + size_);
   ASSERT(masm_.reloc_info_writer.pos() == address_ + size_ + Assembler::kGap);
 }
 
 
 } }  // namespace v8::internal