arch/um/sys-x86_64/shared/sysdep/sigcontext.h

   1 /*
   2  * Copyright 2003 PathScale, Inc.
   3  *
   4  * Licensed under the GPL
   5  */
   6
   7 #ifndef __SYSDEP_X86_64_SIGCONTEXT_H
   8 #define __SYSDEP_X86_64_SIGCONTEXT_H
   9
  10 #include <generated/user_constants.h>
  11
  12 #define SC_OFFSET(sc, field) \
  13          *((unsigned long *) &(((char *) (sc))[HOST_##field]))
  14 #define SC_CR2(sc) SC_OFFSET(sc, SC_CR2)
  15 #define SC_ERR(sc) SC_OFFSET(sc, SC_ERR)
  16 #define SC_TRAPNO(sc) SC_OFFSET(sc, SC_TRAPNO)
  17
  18 #define IP_RESTART_SYSCALL(ip) ((ip) -= 2)
  19
  20 #define GET_FAULTINFO_FROM_SC(fi, sc) \
  21         { \
  22                 (fi).cr2 = SC_CR2(sc); \
  23                 (fi).error_code = SC_ERR(sc); \
  24                 (fi).trap_no = SC_TRAPNO(sc); \
  25         }
  26
  27 /* This is Page Fault */
  28 #define SEGV_IS_FIXABLE(fi)     ((fi)->trap_no == 14)
  29
  30 /* No broken SKAS API, which doesn't pass trap_no, here. */
  31 #define SEGV_MAYBE_FIXABLE(fi)  0
  32
  33 #endif