ptrace.c 2.6 KB

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  1. /*
  2. * linux/arch/cris/kernel/ptrace.c
  3. *
  4. * Parts taken from the m68k port.
  5. *
  6. * Copyright (c) 2000, 2001, 2002 Axis Communications AB
  7. *
  8. * Authors: Bjorn Wesen
  9. *
  10. * $Log: ptrace.c,v $
  11. * Revision 1.10 2004/09/22 11:50:01 orjanf
  12. * * Moved get_reg/put_reg to arch-specific files.
  13. * * Added functions to access debug registers (CRISv32).
  14. * * Added support for PTRACE_SINGLESTEP (CRISv32).
  15. * * Added S flag to CCS_MASK (CRISv32).
  16. *
  17. * Revision 1.9 2003/07/04 12:56:11 tobiasa
  18. * Moved arch-specific code to arch-specific files.
  19. *
  20. * Revision 1.8 2003/04/09 05:20:47 starvik
  21. * Merge of Linux 2.5.67
  22. *
  23. * Revision 1.7 2002/11/27 08:42:34 starvik
  24. * Argument to user_regs() is thread_info*
  25. *
  26. * Revision 1.6 2002/11/20 11:56:11 starvik
  27. * Merge of Linux 2.5.48
  28. *
  29. * Revision 1.5 2002/11/18 07:41:19 starvik
  30. * Removed warning
  31. *
  32. * Revision 1.4 2002/11/11 12:47:28 starvik
  33. * SYSCALL_TRACE has been moved to thread flags
  34. *
  35. * Revision 1.3 2002/02/05 15:37:18 bjornw
  36. * * Add do_notify_resume (replaces do_signal in the callchain)
  37. * * syscall_trace is now do_syscall_trace
  38. * * current->ptrace flag PT_TRACESYS -> PT_SYSCALLTRACE
  39. * * Keep track of the current->work.syscall_trace counter
  40. *
  41. * Revision 1.2 2001/12/18 13:35:20 bjornw
  42. * Applied the 2.4.13->2.4.16 CRIS patch to 2.5.1 (is a copy of 2.4.15).
  43. *
  44. * Revision 1.8 2001/11/12 18:26:21 pkj
  45. * Fixed compiler warnings.
  46. *
  47. * Revision 1.7 2001/09/26 11:53:49 bjornw
  48. * PTRACE_DETACH works more simple in 2.4.10
  49. *
  50. * Revision 1.6 2001/07/25 16:08:47 bjornw
  51. * PTRACE_ATTACH bulk moved into arch-independent code in 2.4.7
  52. *
  53. * Revision 1.5 2001/03/26 14:24:28 orjanf
  54. * * Changed loop condition.
  55. * * Added comment documenting non-standard ptrace behaviour.
  56. *
  57. * Revision 1.4 2001/03/20 19:44:41 bjornw
  58. * Use the user_regs macro instead of thread.esp0
  59. *
  60. * Revision 1.3 2000/12/18 23:45:25 bjornw
  61. * Linux/CRIS first version
  62. *
  63. *
  64. */
  65. #include <linux/kernel.h>
  66. #include <linux/sched.h>
  67. #include <linux/mm.h>
  68. #include <linux/smp.h>
  69. #include <linux/smp_lock.h>
  70. #include <linux/errno.h>
  71. #include <linux/ptrace.h>
  72. #include <linux/user.h>
  73. #include <asm/uaccess.h>
  74. #include <asm/page.h>
  75. #include <asm/pgtable.h>
  76. #include <asm/system.h>
  77. #include <asm/processor.h>
  78. /* notification of userspace execution resumption
  79. * - triggered by current->work.notify_resume
  80. */
  81. extern int do_signal(int canrestart, sigset_t *oldset, struct pt_regs *regs);
  82. void do_notify_resume(int canrestart, sigset_t *oldset, struct pt_regs *regs,
  83. __u32 thread_info_flags )
  84. {
  85. /* deal with pending signal delivery */
  86. if (thread_info_flags & _TIF_SIGPENDING)
  87. do_signal(canrestart,oldset,regs);
  88. }