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ucontext.h

ucontext.h 2.2 KB
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  1. /* Copyright (C) 1997, 1998, 2000 Free Software Foundation, Inc.
    2. 

  2.    This file is part of the GNU C Library.
    3. 

  3. 

  4.    The GNU C Library is free software; you can redistribute it and/or
    5. 

  5.    modify it under the terms of the GNU Lesser General Public
    6. 

  6.    License as published by the Free Software Foundation; either
    7. 

  7.    version 2.1 of the License, or (at your option) any later version.
    8. 

  8. 

  9.    The GNU C Library is distributed in the hope that it will be useful,
    10. 

  10.    but WITHOUT ANY WARRANTY; without even the implied warranty of
    11. 

  11.    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    12. 

  12.    Lesser General Public License for more details.
    13. 

  13. 

  14.    You should have received a copy of the GNU Lesser General Public
    15. 

  15.    License along with the GNU C Library; if not, write to the Free
    16. 

  16.    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
    17. 

  17.    02111-1307 USA.  */
    18. 

  18. 

  19. /* Don't rely on this, the interface is currently messed up and may need to
    20. 

  20.    be broken to be fixed.  */
    21. 

  21. #ifndef _SYS_UCONTEXT_H
    22. 

  22. #define _SYS_UCONTEXT_H	1
    23. 

  23. 

  24. #include <features.h>
    25. 

  25. #include <signal.h>
    26. 

  26. 

  27. /* We need the signal context definitions even if they are not used
    28. 

  28.    included in <signal.h>.  */
    29. 

  29. #include <bits/sigcontext.h>
    30. 

  30. 

  31. 

  32. /* Type for general register.  */
    33. 

  33. typedef unsigned long int greg_t;
    34. 

  34. 

  35. /* Number of general registers.  */
    36. 

  36. #define NGREG	37
    37. 

  37. #define NFPREG	33
    38. 

  38. 

  39. /* Container for all general registers.  */
    40. 

  40. /* gregset_t must be an array.  The below declared array corresponds to:
    41. 

  41. typedef struct gregset {
    42. 

  42. 	greg_t	g_regs[32];
    43. 

  43. 	greg_t	g_hi;
    44. 

  44. 	greg_t	g_lo;
    45. 

  45. 	greg_t	g_pad[3];
    46. 

  46. } gregset_t;  */
    47. 

  47. typedef greg_t gregset_t[NGREG];
    48. 

  48. 

  49. /* Container for all FPU registers.  */
    50. 

  50. typedef struct fpregset {
    51. 

  51. 	union {
    52. 

  52. 		double	fp_dregs[32];
    53. 

  53. 		struct {
    54. 

  54. 			float		_fp_fregs;
    55. 

  55. 			unsigned int	_fp_pad;
    56. 

  56. 		} fp_fregs[32];
    57. 

  57. 	} fp_r;
    58. 

  58. 	unsigned int	fp_csr;
    59. 

  59. 	unsigned int	fp_pad;
    60. 

  60. } fpregset_t;
    61. 

  61. 

  62. 

  63. /* Context to describe whole processor state.  */
    64. 

  64. typedef struct
    65. 

  65.   {
    66. 

  66.     gregset_t gregs;
    67. 

  67.     fpregset_t fpregs;
    68. 

  68.   } mcontext_t;
    69. 

  69. 

  70. /* Userlevel context.  */
    71. 

  71. typedef struct ucontext
    72. 

  72.   {
    73. 

  73.     unsigned long int uc_flags;
    74. 

  74.     struct ucontext *uc_link;
    75. 

  75.     stack_t uc_stack;
    76. 

  76.     mcontext_t uc_mcontext;
    77. 

  77.     __sigset_t uc_sigmask;
    78. 

  78.   } ucontext_t;
    79. 

  79. 

  80. #endif /* sys/ucontext.h */
    81.