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sigcontextinfo.h

sigcontextinfo.h 2.2 KB
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  1. /* Copyright (C) 1998, 1999, 2001 Free Software Foundation, Inc.
    2. 

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

  3.    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.
    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. #define SIGCONTEXT struct sigcontext
    21. 

  21. #define SIGCONTEXT_EXTRA_ARGS
    22. 

  22. #define GET_PC(ctx)	((void *) ctx.eip)
    23. 

  23. #define GET_FRAME(ctx)	((void *) ctx.ebp)
    24. 

  24. #define GET_STACK(ctx)	((void *) ctx.esp_at_signal)
    25. 

  25. #define CALL_SIGHANDLER(handler, signo, ctx) \
    26. 

  26. do {									      \
    27. 

  27.   int __tmp1, __tmp2, __tmp3, __tmp4;					      \
    28. 

  28.   __asm__ __volatile__ ("movl\t%%esp, %%edi\n\t"				      \
    29. 

  29. 		    "andl\t$-16, %%esp\n\t"				      \
    30. 

  30. 		    "subl\t%8, %%esp\n\t"				      \
    31. 

  31. 		    "movl\t%%edi, %c8-4(%%esp)\n\t"			      \
    32. 

  32. 		    "movl\t%1, 0(%%esp)\n\t"				      \
    33. 

  33. 		    "leal\t4(%%esp), %%edi\n\t"				      \
    34. 

  34. 		    "cld\n\t"						      \
    35. 

  35. 		    "rep\tmovsl\n\t"					      \
    36. 

  36. 		    "call\t*%0\n\t"					      \
    37. 

  37. 		    "cld\n\t"						      \
    38. 

  38. 		    "movl\t%9, %%ecx\n\t"				      \
    39. 

  39. 		    "subl\t%%edi, %%esi\n\t"				      \
    40. 

  40. 		    "leal\t4(%%esp,%%esi,1), %%edi\n\t"			      \
    41. 

  41. 		    "leal\t4(%%esp), %%esi\n\t"				      \
    42. 

  42. 		    "rep\tmovsl\n\t"					      \
    43. 

  43. 		    "movl\t%c8-4(%%esp), %%esp\n\t"			      \
    44. 

  44. 		    : "=a" (__tmp1), "=d" (__tmp2), "=S" (__tmp3),	      \
    45. 

  45. 		      "=c" (__tmp4)					      \
    46. 

  46. 		    : "0" (handler), "1" (signo), "2" (&ctx),		      \
    47. 

  47. 		      "3" (sizeof (struct sigcontext) / 4),		      \
    48. 

  48. 		      "n" ((sizeof (struct sigcontext) + 19) & ~15),	      \
    49. 

  49. 		      "i" (sizeof (struct sigcontext) / 4)		      \
    50. 

  50. 		    : "cc", "edi");					      \
    51. 

  51. } while (0)
    52.