/arch/um/include/sysdep-x86_64/sigcontext.h

https://bitbucket.org/evzijst/gittest · C Header · 49 lines · 16 code · 15 blank · 18 comment · 2 complexity · 3bf13468f5d56e91fe8317e4b8cd2c1e MD5 · raw file 

    

  1. /*
    2. 

  2.  * Copyright 2003 PathScale, Inc.
    3. 

  3.  *
    4. 

  4.  * Licensed under the GPL
    5. 

  5.  */
    6. 

  6. 

  7. #ifndef __SYSDEP_X86_64_SIGCONTEXT_H
    8. 

  8. #define __SYSDEP_X86_64_SIGCONTEXT_H
    9. 

  9. 

  10. #include <sysdep/sc.h>
    11. 

  11. 

  12. #define IP_RESTART_SYSCALL(ip) ((ip) -= 2)
    13. 

  13. 

  14. #define SC_RESTART_SYSCALL(sc) IP_RESTART_SYSCALL(SC_IP(sc))
    15. 

  15. #define SC_SET_SYSCALL_RETURN(sc, result) SC_RAX(sc) = (result)
    16. 

  16. 

  17. #define SC_FAULT_ADDR(sc) SC_CR2(sc)
    18. 

  18. #define SC_FAULT_TYPE(sc) SC_ERR(sc)
    19. 

  19. 

  20. #define FAULT_WRITE(err) ((err) & 2)
    21. 

  21. 

  22. #define SC_FAULT_WRITE(sc) FAULT_WRITE(SC_FAULT_TYPE(sc))
    23. 

  23. 

  24. #define SC_TRAP_TYPE(sc) SC_TRAPNO(sc)
    25. 

  25. 

  26. /* ptrace expects that, at the start of a system call, %eax contains
    27. 

  27.  * -ENOSYS, so this makes it so.
    28. 

  28.  */
    29. 

  29. 

  30. #define SC_START_SYSCALL(sc) do SC_RAX(sc) = -ENOSYS; while(0)
    31. 

  31. 

  32. #define SEGV_IS_FIXABLE(trap) ((trap) == 14)
    33. 

  33. #define SC_SEGV_IS_FIXABLE(sc) SEGV_IS_FIXABLE(SC_TRAP_TYPE(sc))
    34. 

  34. 

  35. extern unsigned long *sc_sigmask(void *sc_ptr);
    36. 

  36. 

  37. #endif
    38. 

  38. 

  39. /*
    40. 

  40.  * Overrides for Emacs so that we follow Linus's tabbing style.
    41. 

  41.  * Emacs will notice this stuff at the end of the file and automatically
    42. 

  42.  * adjust the settings for this buffer only.  This must remain at the end
    43. 

  43.  * of the file.
    44. 

  44.  * ---------------------------------------------------------------------------
    45. 

  45.  * Local variables:
    46. 

  46.  * c-file-style: "linux"
    47. 

  47.  * End:
    48. 

  48.  */
    49.