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uclibc-ng
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uclibc-ng
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libpthread
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linuxthreads
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sysdeps
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arm
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sigcontextinfo.h

sigcontextinfo.h 3.9 KB
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  1. /* Copyright (C) 1999 Free Software Foundation, Inc.
    2. 

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

  3.    Contributed by Philip Blundell <philb@gnu.org>, 1999.
    4. 

  4. 

  5.    The GNU C Library is free software; you can redistribute it and/or
    6. 

  6.    modify it under the terms of the GNU Lesser General Public
    7. 

  7.    License as published by the Free Software Foundation; either
    8. 

  8.    version 2.1 of the License, or (at your option) any later version.
    9. 

  9. 

  10.    The GNU C Library is distributed in the hope that it will be useful,
    11. 

  11.    but WITHOUT ANY WARRANTY; without even the implied warranty of
    12. 

  12.    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    13. 

  13.    Lesser General Public License for more details.
    14. 

  14. 

  15.    You should have received a copy of the GNU Lesser General Public
    16. 

  16.    License along with the GNU C Library; if not, write to the Free
    17. 

  17.    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
    18. 

  18.    02111-1307 USA.  */
    19. 

  19. 

  20. 

  21. /* Definition of `struct sigcontext' for Linux/ARM
    22. 

  22.    Copyright (C) 1996, 1997, 1998, 1999, 2000 Free Software Foundation, Inc.
    23. 

  23.    This file is part of the GNU C Library.
    24. 

  24. 

  25.    The GNU C Library is free software; you can redistribute it and/or
    26. 

  26.    modify it under the terms of the GNU Lesser General Public
    27. 

  27.    License as published by the Free Software Foundation; either
    28. 

  28.    version 2.1 of the License, or (at your option) any later version.
    29. 

  29. 

  30.    The GNU C Library is distributed in the hope that it will be useful,
    31. 

  31.    but WITHOUT ANY WARRANTY; without even the implied warranty of
    32. 

  32.    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    33. 

  33.    Lesser General Public License for more details.
    34. 

  34. 

  35.    You should have received a copy of the GNU Lesser General Public
    36. 

  36.    License along with the GNU C Library; if not, write to the Free
    37. 

  37.    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
    38. 

  38.    02111-1307 USA.  */
    39. 

  39. 

  40. /* The format of struct sigcontext changed between 2.0 and 2.1 kernels.
    41. 

  41.    Fortunately 2.0 puts a magic number in the first word and this is not
    42. 

  42.    a legal value for `trap_no', so we can tell them apart.  */
    43. 

  43. 

  44. /* Early 2.2 and 2.3 kernels do not have the `fault_address' member in
    45. 

  45.    the sigcontext structure.  Unfortunately there is no reliable way
    46. 

  46.    to test for its presence and this word will contain garbage for too-old
    47. 

  47.    kernels.  Versions 2.2.14 and 2.3.35 (plus later versions) are known to
    48. 

  48.    include this element.  */
    49. 

  49. 

  50. #ifndef __ARMSIGCTX_H
    51. 

  51. #define __ARMSIGCTX_H	1
    52. 

  52. 

  53. #include <asm/ptrace.h>
    54. 

  54. 

  55. union k_sigcontext
    56. 

  56.   {
    57. 

  57.     struct
    58. 

  58.       {
    59. 

  59. 	unsigned long int trap_no;
    60. 

  60. 	unsigned long int error_code;
    61. 

  61. 	unsigned long int oldmask;
    62. 

  62. 	unsigned long int arm_r0;
    63. 

  63. 	unsigned long int arm_r1;
    64. 

  64. 	unsigned long int arm_r2;
    65. 

  65. 	unsigned long int arm_r3;
    66. 

  66. 	unsigned long int arm_r4;
    67. 

  67. 	unsigned long int arm_r5;
    68. 

  68. 	unsigned long int arm_r6;
    69. 

  69. 	unsigned long int arm_r7;
    70. 

  70. 	unsigned long int arm_r8;
    71. 

  71. 	unsigned long int arm_r9;
    72. 

  72. 	unsigned long int arm_r10;
    73. 

  73. 	unsigned long int arm_fp;
    74. 

  74. 	unsigned long int arm_ip;
    75. 

  75. 	unsigned long int arm_sp;
    76. 

  76. 	unsigned long int arm_lr;
    77. 

  77. 	unsigned long int arm_pc;
    78. 

  78. 	unsigned long int arm_cpsr;
    79. 

  79. 	unsigned long fault_address;
    80. 

  80.       } v21;
    81. 

  81.     struct
    82. 

  82.       {
    83. 

  83. 	unsigned long int magic;
    84. 

  84. 	struct pt_regs reg;
    85. 

  85. 	unsigned long int trap_no;
    86. 

  86. 	unsigned long int error_code;
    87. 

  87. 	unsigned long int oldmask;
    88. 

  88.       } v20;
    89. 

  89. };
    90. 

  90. 

  91. #define SIGCONTEXT_2_0_MAGIC	0x4B534154
    92. 

  92. 

  93. #endif	/* bits/armsigctx.h */
    94. 

  94. 

  95. #define SIGCONTEXT int _a2, int _a3, int _a4, union k_sigcontext
    96. 

  96. #define SIGCONTEXT_EXTRA_ARGS _a2, _a3, _a4,
    97. 

  97. 

  98. #define GET_PC(ctx)	((void *)((ctx.v20.magic == SIGCONTEXT_2_0_MAGIC) ? \
    99. 

  99. 			 ctx.v20.reg.ARM_pc : ctx.v21.arm_pc))
    100. 

  100. #define GET_FRAME(ctx)	\
    101. 

  101. 	ADVANCE_STACK_FRAME((void *)((ctx.v20.magic == SIGCONTEXT_2_0_MAGIC) ? \
    102. 

  102. 			 ctx.v20.reg.ARM_fp : ctx.v21.arm_fp))
    103. 

  103. #define GET_STACK(ctx)	((void *)((ctx.v20.magic == SIGCONTEXT_2_0_MAGIC) ? \
    104. 

  104. 			 ctx.v20.reg.ARM_sp : ctx.v21.arm_sp))
    105. 

  105. #define ADVANCE_STACK_FRAME(frm)	\
    106. 

  106. 			((struct layout *)frm - 1)
    107. 

  107. #define CALL_SIGHANDLER(handler, signo, ctx) \
    108. 

  108.   (handler)((signo), SIGCONTEXT_EXTRA_ARGS (ctx))
    109.