Cleanup the way the debugger stores live registers when entering at a break...

src/ia32/code-stubs-ia32.cc

 // Copyright 2010 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 3036 matching lines @@
 static const bool kPassHandlesDirectly = true;
 #else
 static const bool kPassHandlesDirectly = false;
 #endif
 
 
 void ApiGetterEntryStub::Generate(MacroAssembler* masm) {
   Label empty_handle;
   Label prologue;
   Label promote_scheduled_exception;
-  __ EnterApiExitFrame(ExitFrame::MODE_NORMAL, kStackSpace, kArgc);
+  __ EnterApiExitFrame(kStackSpace, kArgc);
   STATIC_ASSERT(kArgc == 4);
   if (kPassHandlesDirectly) {
     // When handles as passed directly we don't have to allocate extra
     // space for and pass an out parameter.
     __ mov(Operand(esp, 0 * kPointerSize), ebx);  // name.
     __ mov(Operand(esp, 1 * kPointerSize), eax);  // arguments pointer.
   } else {
     // The function expects three arguments to be passed but we allocate
     // four to get space for the output cell.  The argument slots are filled
     // as follows:
@@ skipping 25 matching lines @@
     // The returned value is a pointer to the handle holding the result.
     // Dereference this to get to the location.
     __ mov(eax, Operand(eax, 0));
   }
   // Check if the result handle holds 0.
   __ test(eax, Operand(eax));
   __ j(zero, &empty_handle, not_taken);
   // It was non-zero.  Dereference to get the result value.
   __ mov(eax, Operand(eax, 0));
   __ bind(&prologue);
-  __ LeaveExitFrame(ExitFrame::MODE_NORMAL);
+  __ LeaveExitFrame();
   __ ret(0);
   __ bind(&promote_scheduled_exception);
   __ TailCallRuntime(Runtime::kPromoteScheduledException, 0, 1);
   __ bind(&empty_handle);
   // It was zero; the result is undefined.
   __ mov(eax, Factory::undefined_value());
   __ jmp(&prologue);
 }
 
 
@@ skipping 56 matching lines @@
 
   // Check for failure result.
   Label failure_returned;
   STATIC_ASSERT(((kFailureTag + 1) & kFailureTagMask) == 0);
   __ lea(ecx, Operand(eax, 1));
   // Lower 2 bits of ecx are 0 iff eax has failure tag.
   __ test(ecx, Immediate(kFailureTagMask));
   __ j(zero, &failure_returned, not_taken);
 
   // Exit the JavaScript to C++ exit frame.
-  __ LeaveExitFrame(mode_);
+  __ LeaveExitFrame();
   __ ret(0);
 
   // Handling of failure.
   __ bind(&failure_returned);
 
   Label retry;
   // If the returned exception is RETRY_AFTER_GC continue at retry label
   STATIC_ASSERT(Failure::RETRY_AFTER_GC == 0);
   __ test(eax, Immediate(((1 << kFailureTypeTagSize) - 1) << kFailureTagSize));
   __ j(zero, &retry, taken);
@@ skipping 79 matching lines @@
   // 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)
 
   // NOTE: Invocations of builtins may return failure objects instead
   // of a proper result. The builtin entry handles this by performing
   // a garbage collection and retrying the builtin (twice).
 
   // Enter the exit frame that transitions from JavaScript to C++.
-  __ EnterExitFrame(mode_);
+  __ EnterExitFrame();
 
   // eax: result parameter for PerformGC, if any (setup below)
   // ebx: pointer to builtin 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: argv pointer (C callee-saved)
 
   Label throw_normal_exception;
   Label throw_termination_exception;
@@ skipping 1239 matching lines @@
   // tagged as a small integer.
   __ bind(&runtime);
   __ TailCallRuntime(Runtime::kStringCompare, 2, 1);
 }
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_IA32