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/* Copyright (C) 1996, 1997, 1998, 2000, 2001 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 Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; 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 _BITS_SIGCONTEXT_H
#define _BITS_SIGCONTEXT_H 1
#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 */
unsigned long int sc_rbs_base;/* NULL or new base of sighandler's rbs */
unsigned long int sc_loadrs; /* see description above */
unsigned long int sc_ar25; /* cmp8xchg16 uses this */
unsigned long int sc_ar26; /* rsvd for scratch use */
unsigned long int sc_rsvd[12];/* reserved for future use */
/* 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 */
};
/* sc_flag bit definitions. */
#define IA64_SC_FLAG_ONSTACK_BIT 0 /* is handler running on signal stack? */
#define IA64_SC_FLAG_IN_SYSCALL_BIT 1 /* did signal interrupt a syscall? */
#define IA64_SC_FLAG_FPH_VALID_BIT 2 /* is state in f[32]-f[127] valid? */
#define IA64_SC_FLAG_ONSTACK (1 << IA64_SC_FLAG_ONSTACK_BIT)
#define IA64_SC_FLAG_IN_SYSCALL (1 << IA64_SC_FLAG_IN_SYSCALL_BIT)
#define IA64_SC_FLAG_FPH_VALID (1 << IA64_SC_FLAG_FPH_VALID_BIT)
#endif /* _BITS_SIGCONTEXT_H */
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