/*****************************************************************************************
 Copyright (c) 2002-2004 The UbixOS Project
 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, the following disclaimer and the list of authors.  Redistributions in binary
 form must reproduce the above copyright notice, this list of conditions, the following
 disclaimer and the list of authors in the documentation and/or other materials provided
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 contributors may be used to endorse or promote products derived from this software
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 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
 EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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 OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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 $Id$

*****************************************************************************************/

/*
   Page fault wrapper this will aquire some values we need for later use
 */

.globl _vmm_pageFault
.text
.code32
_vmm_pageFault:
  xchgl %eax,(%esp)   /* Save EAX                                         */
  movl  4(%esp),%eax  /* Move EIP into EAX to use later                   */
  pushl %ebx          /* Save EBX                                         */
  movl  20(%esp),%ebx /* Save ESP for ring 3 to use later                 */ 
  pushl %ecx          /* Save ECX,EDX                                     */
  pushl %edx             
  push  %ebx          /* Push ESP                                         */
  push  %eax          /* Push EIP                                         */
  movl  %cr2,%eax     /* Push the faulted address                         */
  pushl %eax
  sti                 /* Turn interrupts back on we are now entrant safe  */
  call  vmm_pageFault /* Call our page fault handler                      */
  addl  $0xC,%esp     /* Adjust the stack to compensate for pushed values */
  popl  %edx          /* Restore EAX,EBX,ECX,EDX                          */
  popl  %ecx
  popl  %ebx
  popl  %eax
  iret                /* Return from the interrupt                        */        


/***
 END
 ***/