ucontext.h 2.6 KB

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  1. /* Copyright (C) 1999, 2000, 2001 Free Software Foundation, Inc.
  2. This file is part of the GNU C Library.
  3. The GNU C Library is free software; you can redistribute it and/or
  4. modify it under the terms of the GNU Lesser General Public
  5. License as published by the Free Software Foundation; either
  6. version 2.1 of the License, or (at your option) any later version.
  7. The GNU C Library is distributed in the hope that it will be useful,
  8. but WITHOUT ANY WARRANTY; without even the implied warranty of
  9. MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  10. Lesser General Public License for more details.
  11. You should have received a copy of the GNU Lesser General Public
  12. License along with the GNU C Library; if not, write to the Free
  13. Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  14. 02111-1307 USA. */
  15. /* Where is System V/SH ABI? */
  16. #ifndef _SYS_UCONTEXT_H
  17. #define _SYS_UCONTEXT_H 1
  18. #include <features.h>
  19. #include <signal.h>
  20. /* We need the signal context definitions even if they are not used
  21. included in <signal.h>. */
  22. #include <bits/sigcontext.h>
  23. typedef int greg_t;
  24. /* Number of general registers. */
  25. #define NFPREG 16
  26. /* Container for all general registers. */
  27. typedef greg_t gregset_t[NFPREG];
  28. #ifdef __USE_GNU
  29. /* Number of each register is the `gregset_t' array. */
  30. enum
  31. {
  32. R0 = 0,
  33. #define R0 R0
  34. R1 = 1,
  35. #define R1 R1
  36. R2 = 2,
  37. #define R2 R2
  38. R3 = 3,
  39. #define R3 R3
  40. R4 = 4,
  41. #define R4 R4
  42. R5 = 5,
  43. #define R5 R5
  44. R6 = 6,
  45. #define R6 R6
  46. R7 = 7,
  47. #define R7 R7
  48. R8 = 8,
  49. #define R8 R8
  50. R9 = 9,
  51. #define R9 R9
  52. R10 = 10,
  53. #define R10 R10
  54. R11 = 11,
  55. #define R11 R11
  56. R12 = 12,
  57. #define R12 R12
  58. R13 = 13,
  59. #define R13 R13
  60. R14 = 14,
  61. #define R14 R14
  62. R15 = 15,
  63. #define R15 R15
  64. };
  65. #endif
  66. typedef int freg_t;
  67. /* Number of FPU registers. */
  68. #define NFPREG 16
  69. /* Structure to describe FPU registers. */
  70. typedef freg_t fpregset_t[NFPREG];
  71. /* Context to describe whole processor state. */
  72. typedef struct
  73. {
  74. unsigned int oldmask;
  75. /* CPU registers */
  76. gregset_t gregs;
  77. unsigned int pc;
  78. unsigned int pr;
  79. unsigned int sr;
  80. unsigned int gbr;
  81. unsigned int mach;
  82. unsigned int macl;
  83. #ifdef __SH4__
  84. /* FPU registers */
  85. fpregset_t fpregs;
  86. fpregset_t xfpregs;
  87. unsigned int fpscr;
  88. unsigned int fpul;
  89. unsigned int ownedfp;
  90. #endif
  91. } mcontext_t;
  92. /* Userlevel context. */
  93. typedef struct ucontext
  94. {
  95. unsigned long int uc_flags;
  96. struct ucontext *uc_link;
  97. stack_t uc_stack;
  98. mcontext_t uc_mcontext;
  99. __sigset_t uc_sigmask;
  100. } ucontext_t;
  101. #endif /* sys/ucontext.h */