release/src-rt-6.x/linux/linux-2.6/arch/um/include/sysdep-x86_64/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 <sysdep/sc.h>
  11
  12 #define IP_RESTART_SYSCALL(ip) ((ip) -= 2)
  13
  14 #define SC_RESTART_SYSCALL(sc) IP_RESTART_SYSCALL(SC_IP(sc))
  15 #define SC_SET_SYSCALL_RETURN(sc, result) SC_RAX(sc) = (result)
  16
  17 #define SC_FAULT_ADDR(sc) SC_CR2(sc)
  18 #define SC_FAULT_TYPE(sc) SC_ERR(sc)
  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 /* ptrace expects that, at the start of a system call, %eax contains
  28  * -ENOSYS, so this makes it so.
  29  */
  30
  31 #define SC_START_SYSCALL(sc) do SC_RAX(sc) = -ENOSYS; while(0)
  32
  33 /* This is Page Fault */
  34 #define SEGV_IS_FIXABLE(fi)     ((fi)->trap_no == 14)
  35
  36 /* No broken SKAS API, which doesn't pass trap_no, here. */
  37 #define SEGV_MAYBE_FIXABLE(fi)  0
  38
  39 extern unsigned long *sc_sigmask(void *sc_ptr);
  40
  41 #endif
  42
  43 /*
  44  * Overrides for Emacs so that we follow Linus's tabbing style.
  45  * Emacs will notice this stuff at the end of the file and automatically
  46  * adjust the settings for this buffer only.  This must remain at the end
  47  * of the file.
  48  * ---------------------------------------------------------------------------
  49  * Local variables:
  50  * c-file-style: "linux"
  51  * End:
  52  */
  53