arch/um/include/sysdep-i386/sigcontext.h

   1 /*
   2  * Copyright (C) 2000, 2001, 2002 Jeff Dike (jdike@karaya.com)
   3  * Licensed under the GPL
   4  */
   5
   6 #ifndef __SYS_SIGCONTEXT_I386_H
   7 #define __SYS_SIGCONTEXT_I386_H
   8
   9 #include <sysdep/sc.h>
  10
  11 #define IP_RESTART_SYSCALL(ip) ((ip) -= 2)
  12
  13 #define SC_RESTART_SYSCALL(sc) IP_RESTART_SYSCALL(SC_IP(sc))
  14 #define SC_SET_SYSCALL_RETURN(sc, result) SC_EAX(sc) = (result)
  15
  16 #define GET_FAULTINFO_FROM_SC(fi,sc) \
  17         { \
  18                 (fi).cr2 = SC_CR2(sc); \
  19                 (fi).error_code = SC_ERR(sc); \
  20                 (fi).trap_no = SC_TRAPNO(sc); \
  21         }
  22
  23 /* ptrace expects that, at the start of a system call, %eax contains
  24  * -ENOSYS, so this makes it so.
  25  */
  26 #define SC_START_SYSCALL(sc) do SC_EAX(sc) = -ENOSYS; while(0)
  27
  28 /* This is Page Fault */
  29 #define SEGV_IS_FIXABLE(fi) ((fi)->trap_no == 14)
  30
  31 extern unsigned long *sc_sigmask(void *sc_ptr);
  32 extern int sc_get_fpregs(unsigned long buf, void *sc_ptr);
  33
  34 #endif
  35 /*
  36  * Overrides for Emacs so that we follow Linus's tabbing style.
  37  * Emacs will notice this stuff at the end of the file and automatically
  38  * adjust the settings for this buffer only.  This must remain at the end
  39  * of the file.
  40  * ---------------------------------------------------------------------------
  41  * Local variables:
  42  * c-file-style: "linux"
  43  * End:
  44  */