Revert 12083: Implements a new API to set a function entry hook for profiling.

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 7456 matching lines @@
                                  edx,
                                  ecx,
                                  edi,
                                  xmm0,
                                  &slow_elements_from_double,
                                  false);
   __ pop(edx);
   __ ret(0);
 }
 
-
-void ProfileEntryHookStub::MaybeCallEntryHook(MacroAssembler* masm) {
-  if (entry_hook_ != NULL) {
-    ProfileEntryHookStub stub;
-    masm->CallStub(&stub);
-  }
-}
-
-
-void ProfileEntryHookStub::Generate(MacroAssembler* masm) {
-  // Ecx is the only volatile register we must save.
-  __ push(ecx);
-
-  // Calculate and push the original stack pointer.
-  __ lea(eax, Operand(esp, kPointerSize));
-  __ push(eax);
-
-  // Calculate and push the function address.
-  __ mov(eax, Operand(eax, 0));
-  __ sub(eax, Immediate(Assembler::kCallInstructionLength));
-  __ push(eax);
-
-  // Call the entry hook.
-  int32_t hook_location = reinterpret_cast<int32_t>(&entry_hook_);
-  __ call(Operand(hook_location, RelocInfo::NONE));
-  __ add(esp, Immediate(2 * kPointerSize));
-
-  // Restore ecx.
-  __ pop(ecx);
-  __ ret(0);
-}
-
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_IA32