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1 /* Copyright (C) 1996-2019 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 <https://www.gnu.org/licenses/>. */
19 #ifndef _BITS_SIGCONTEXT_H
20 #define _BITS_SIGCONTEXT_H 1
22 #if !defined _SIGNAL_H && !defined _SYS_UCONTEXT_H
23 # error "Never use <bits/sigcontext.h> directly; include <signal.h> instead."
28 #include <bits/sigstack.h>
29 #include <bits/types/struct_sigstack.h>
30 #include <bits/types/stack_t.h>
31 #include <bits/ss_flags.h>
37 unsigned long bits
[2];
39 } __attribute__ ((__aligned__ (16)));
43 unsigned long int sc_flags
; /* see manifest constants below */
44 unsigned long int sc_nat
; /* bit i == 1 iff scratch reg gr[i] is a NaT */
45 stack_t sc_stack
; /* previously active stack */
47 unsigned long int sc_ip
; /* instruction pointer */
48 unsigned long int sc_cfm
; /* current frame marker */
49 unsigned long int sc_um
; /* user mask bits */
50 unsigned long int sc_ar_rsc
; /* register stack configuration register */
51 unsigned long int sc_ar_bsp
; /* backing store pointer */
52 unsigned long int sc_ar_rnat
; /* RSE NaT collection register */
53 unsigned long int sc_ar_ccv
; /* compare & exchange compare value register */
54 unsigned long int sc_ar_unat
; /* ar.unat of interrupted context */
55 unsigned long int sc_ar_fpsr
; /* floating-point status register */
56 unsigned long int sc_ar_pfs
; /* previous function state */
57 unsigned long int sc_ar_lc
; /* loop count register */
58 unsigned long int sc_pr
; /* predicate registers */
59 unsigned long int sc_br
[8]; /* branch registers */
60 unsigned long int sc_gr
[32]; /* general registers (static partition) */
61 struct __ia64_fpreg sc_fr
[128]; /* floating-point registers */
62 unsigned long int sc_rbs_base
;/* NULL or new base of sighandler's rbs */
63 unsigned long int sc_loadrs
; /* see description above */
64 unsigned long int sc_ar25
; /* cmp8xchg16 uses this */
65 unsigned long int sc_ar26
; /* rsvd for scratch use */
66 unsigned long int sc_rsvd
[12];/* reserved for future use */
68 /* sc_mask is actually an sigset_t but we don't want to
69 * include the kernel headers here. */
70 unsigned long int sc_mask
; /* signal mask to restore after handler returns */
73 /* sc_flag bit definitions. */
74 #define IA64_SC_FLAG_ONSTACK_BIT 0 /* is handler running on signal stack? */
75 #define IA64_SC_FLAG_IN_SYSCALL_BIT 1 /* did signal interrupt a syscall? */
76 #define IA64_SC_FLAG_FPH_VALID_BIT 2 /* is state in f[32]-f[127] valid? */
78 #define IA64_SC_FLAG_ONSTACK (1 << IA64_SC_FLAG_ONSTACK_BIT)
79 #define IA64_SC_FLAG_IN_SYSCALL (1 << IA64_SC_FLAG_IN_SYSCALL_BIT)
80 #define IA64_SC_FLAG_FPH_VALID (1 << IA64_SC_FLAG_FPH_VALID_BIT)
82 #endif /* _BITS_SIGCONTEXT_H */