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  1. /*
  2.  * Copyright (C) 2005 Ondrej Palkovsky
  3.  * All rights reserved.
  4.  *
  5.  * Redistribution and use in source and binary forms, with or without
  6.  * modification, are permitted provided that the following conditions
  7.  * are met:
  8.  *
  9.  * - Redistributions of source code must retain the above copyright
  10.  *   notice, this list of conditions and the following disclaimer.
  11.  * - Redistributions in binary form must reproduce the above copyright
  12.  *   notice, this list of conditions and the following disclaimer in the
  13.  *   documentation and/or other materials provided with the distribution.
  14.  * - The name of the author may not be used to endorse or promote products
  15.  *   derived from this software without specific prior written permission.
  16.  *
  17.  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  18.  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19.  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20.  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  21.  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  22.  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23.  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24.  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25.  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  26.  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27.  */
  28.  
  29.  /** @addtogroup amd64 
  30.  * @{
  31.  */
  32. /** @file
  33.  */
  34.  
  35. #ifndef __amd64_CONTEXT_H__
  36. #define __amd64_CONTEXT_H__
  37.  
  38. #ifndef __amd64_TYPES_H__
  39. #  include <arch/types.h>
  40. #endif
  41.  
  42.  
  43. /* According to ABI the stack MUST be aligned on
  44.  * 16-byte boundary. If it is not, the va_arg calling will
  45.  * panic sooner or later
  46.  */
  47. #define SP_DELTA     16
  48.  
  49. /* We include only registers that must be preserved
  50.  * during function call
  51.  */
  52. struct context {
  53.     uintptr_t sp;
  54.     uintptr_t pc;
  55.    
  56.     uint64_t rbx;
  57.     uint64_t rbp;
  58.  
  59.     uint64_t r12;
  60.     uint64_t r13;
  61.     uint64_t r14;
  62.     uint64_t r15;
  63.  
  64.     ipl_t ipl;
  65. } __attribute__ ((packed));
  66.  
  67. #endif
  68.  
  69.  /** @}
  70.  */
  71.  
  72.