1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
 2/*
 3 * This file is subject to the terms and conditions of the GNU General Public
 4 * License.  See the file "COPYING" in the main directory of this archive
 5 * for more details.
 6 *
 7 * Copyright (C) 1996, 1997, 1999 by Ralf Baechle
 8 * Copyright (C) 1999 Silicon Graphics, Inc.
 9 */
10#ifndef _ASM_SIGCONTEXT_H
11#define _ASM_SIGCONTEXT_H
12
13#include <linux/types.h>
14#include <asm/sgidefs.h>
15
16/* scalar FP context was used */
17#define USED_FP			(1 << 0)
18
19/* the value of Status.FR when context was saved */
20#define USED_FR1		(1 << 1)
21
22/* FR=1, but with odd singles in bits 63:32 of preceding even double */
23#define USED_HYBRID_FPRS	(1 << 2)
24
25/* extended context was used, see struct extcontext for details */
26#define USED_EXTCONTEXT		(1 << 3)
27
28#if _MIPS_SIM == _MIPS_SIM_ABI32
29
30/*
31 * Keep this struct definition in sync with the sigcontext fragment
32 * in arch/mips/kernel/asm-offsets.c
33 */
34struct sigcontext {
35	unsigned int		sc_regmask;	/* Unused */
36	unsigned int		sc_status;	/* Unused */
37	unsigned long long	sc_pc;
38	unsigned long long	sc_regs[32];
39	unsigned long long	sc_fpregs[32];
40	unsigned int		sc_acx;		/* Was sc_ownedfp */
41	unsigned int		sc_fpc_csr;
42	unsigned int		sc_fpc_eir;	/* Unused */
43	unsigned int		sc_used_math;
44	unsigned int		sc_dsp;		/* dsp status, was sc_ssflags */
45	unsigned long long	sc_mdhi;
46	unsigned long long	sc_mdlo;
47	unsigned long		sc_hi1;		/* Was sc_cause */
48	unsigned long		sc_lo1;		/* Was sc_badvaddr */
49	unsigned long		sc_hi2;		/* Was sc_sigset[4] */
50	unsigned long		sc_lo2;
51	unsigned long		sc_hi3;
52	unsigned long		sc_lo3;
53};
54
55#endif /* _MIPS_SIM == _MIPS_SIM_ABI32 */
56
57#if _MIPS_SIM == _MIPS_SIM_ABI64 || _MIPS_SIM == _MIPS_SIM_NABI32
58
59/*
60 * Keep this struct definition in sync with the sigcontext fragment
61 * in arch/mips/kernel/asm-offsets.c
62 *
63 * Warning: this structure illdefined with sc_badvaddr being just an unsigned
64 * int so it was changed to unsigned long in 2.6.0-test1.  This may break
65 * binary compatibility - no prisoners.
66 * DSP ASE in 2.6.12-rc4.  Turn sc_mdhi and sc_mdlo into an array of four
67 * entries, add sc_dsp and sc_reserved for padding.  No prisoners.
68 */
69struct sigcontext {
70	__u64	sc_regs[32];
71	__u64	sc_fpregs[32];
72	__u64	sc_mdhi;
73	__u64	sc_hi1;
74	__u64	sc_hi2;
75	__u64	sc_hi3;
76	__u64	sc_mdlo;
77	__u64	sc_lo1;
78	__u64	sc_lo2;
79	__u64	sc_lo3;
80	__u64	sc_pc;
81	__u32	sc_fpc_csr;
82	__u32	sc_used_math;
83	__u32	sc_dsp;
84	__u32	sc_reserved;
85};
86
87
88#endif /* _MIPS_SIM == _MIPS_SIM_ABI64 || _MIPS_SIM == _MIPS_SIM_NABI32 */
89
90#endif /* _ASM_SIGCONTEXT_H */