1 /* Copyright (C) 1996-2012 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3 Contributed by Jes Sorensen <jes@linuxcare.com>, July 2000
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <http://www.gnu.org/licenses/>. */
19 #if !defined _SIGNAL_H && !defined _SYS_UCONTEXT_H
20 # error "Never use <bits/sigcontext.h> directly; include <signal.h> instead."
23 #ifndef _BITS_SIGCONTEXT_H
24 #define _BITS_SIGCONTEXT_H 1
28 #include <bits/sigstack.h>
34 unsigned long bits
[2];
36 } __attribute__ ((__aligned__ (16)));
40 unsigned long int sc_flags
; /* see manifest constants below */
41 unsigned long int sc_nat
; /* bit i == 1 iff scratch reg gr[i] is a NaT */
42 stack_t sc_stack
; /* previously active stack */
44 unsigned long int sc_ip
; /* instruction pointer */
45 unsigned long int sc_cfm
; /* current frame marker */
46 unsigned long int sc_um
; /* user mask bits */
47 unsigned long int sc_ar_rsc
; /* register stack configuration register */
48 unsigned long int sc_ar_bsp
; /* backing store pointer */
49 unsigned long int sc_ar_rnat
; /* RSE NaT collection register */
50 unsigned long int sc_ar_ccv
; /* compare & exchange compare value register */
51 unsigned long int sc_ar_unat
; /* ar.unat of interrupted context */
52 unsigned long int sc_ar_fpsr
; /* floating-point status register */
53 unsigned long int sc_ar_pfs
; /* previous function state */
54 unsigned long int sc_ar_lc
; /* loop count register */
55 unsigned long int sc_pr
; /* predicate registers */
56 unsigned long int sc_br
[8]; /* branch registers */
57 unsigned long int sc_gr
[32]; /* general registers (static partition) */
58 struct ia64_fpreg sc_fr
[128]; /* floating-point registers */
59 unsigned long int sc_rbs_base
;/* NULL or new base of sighandler's rbs */
60 unsigned long int sc_loadrs
; /* see description above */
61 unsigned long int sc_ar25
; /* cmp8xchg16 uses this */
62 unsigned long int sc_ar26
; /* rsvd for scratch use */
63 unsigned long int sc_rsvd
[12];/* reserved for future use */
65 /* sc_mask is actually an sigset_t but we don't want to
66 * include the kernel headers here. */
67 unsigned long int sc_mask
; /* signal mask to restore after handler returns */
70 /* sc_flag bit definitions. */
71 #define IA64_SC_FLAG_ONSTACK_BIT 0 /* is handler running on signal stack? */
72 #define IA64_SC_FLAG_IN_SYSCALL_BIT 1 /* did signal interrupt a syscall? */
73 #define IA64_SC_FLAG_FPH_VALID_BIT 2 /* is state in f[32]-f[127] valid? */
75 #define IA64_SC_FLAG_ONSTACK (1 << IA64_SC_FLAG_ONSTACK_BIT)
76 #define IA64_SC_FLAG_IN_SYSCALL (1 << IA64_SC_FLAG_IN_SYSCALL_BIT)
77 #define IA64_SC_FLAG_FPH_VALID (1 << IA64_SC_FLAG_FPH_VALID_BIT)
79 #endif /* _BITS_SIGCONTEXT_H */