glibc/sysdeps/unix/sysv/linux/ia64/bits/sigcontext.h

/* Copyright (C) 1996, 1997, 1998,2000 Free Software Foundation, Inc.
   This file is part of the GNU C Library.
   Contributed by Jes Sorensen <jes@linuxcare.com>, July 2000

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Library General Public License as
   published by the Free Software Foundation; either version 2 of the
   License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Library General Public License for more details.

   You should have received a copy of the GNU Library General Public
   License along with the GNU C Library; see the file COPYING.LIB.  If not,
   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
   Boston, MA 02111-1307, USA.  */

#if !defined _SIGNAL_H && !defined _SYS_UCONTEXT_H
# error "Never use <bits/sigcontext.h> directly; include <signal.h> instead."
#endif

#ifndef sigcontext_struct
/* Kernel headers before 2.1.1 define a struct sigcontext_struct, but
   we need sigcontext.  */
# define sigcontext_struct sigcontext
#endif

#include <asm/fpu.h>
#include <bits/sigstack.h>

struct sigcontext
{
  unsigned long int sc_flags;	/* see manifest constants above */
  unsigned long int sc_nat;	/* bit i == 1 iff scratch reg gr[i] is a NaT */
  stack_t sc_stack;		/* previously active stack */

  unsigned long int sc_ip;	/* instruction pointer */
  unsigned long int sc_cfm;	/* current frame marker */
  unsigned long int sc_um;	/* user mask bits */
  unsigned long int sc_ar_rsc;	/* register stack configuration register */
  unsigned long int sc_ar_bsp;	/* backing store pointer */
  unsigned long int sc_ar_rnat;	/* RSE NaT collection register */
  unsigned long int sc_ar_ccv;	/* compare & exchange compare value register */
  unsigned long int sc_ar_unat;	/* ar.unat of interrupted context */
  unsigned long int sc_ar_fpsr;	/* floating-point status register */
  unsigned long int sc_ar_pfs;	/* previous function state */
  unsigned long int sc_ar_lc;	/* loop count register */
  unsigned long int sc_pr;	/* predicate registers */
  unsigned long int sc_br[8];	/* branch registers */
  unsigned long int sc_gr[32];	/* general registers (static partition) */
  struct ia64_fpreg sc_fr[128];	/* floating-point registers */

  /* sc_mask is actually an sigset_t but we don't want to
   * include the kernel headers here. */
  unsigned long int sc_mask;	/* signal mask to restore after handler returns */
};