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 _UAPI_ASM_SIGCONTEXT_H
11 #define _UAPI_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  */
34 struct 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 #include <linux/posix_types.h>
60 /*
61  * Keep this struct definition in sync with the sigcontext fragment
62  * in arch/mips/kernel/asm-offsets.c
63  *
64  * Warning: this structure illdefined with sc_badvaddr being just an unsigned
65  * int so it was changed to unsigned long in 2.6.0-test1.  This may break
66  * binary compatibility - no prisoners.
67  * DSP ASE in 2.6.12-rc4.  Turn sc_mdhi and sc_mdlo into an array of four
68  * entries, add sc_dsp and sc_reserved for padding.  No prisoners.
69  */
70 struct sigcontext {
71 	__u64	sc_regs[32];
72 	__u64	sc_fpregs[32];
73 	__u64	sc_mdhi;
74 	__u64	sc_hi1;
75 	__u64	sc_hi2;
76 	__u64	sc_hi3;
77 	__u64	sc_mdlo;
78 	__u64	sc_lo1;
79 	__u64	sc_lo2;
80 	__u64	sc_lo3;
81 	__u64	sc_pc;
82 	__u32	sc_fpc_csr;
83 	__u32	sc_used_math;
84 	__u32	sc_dsp;
85 	__u32	sc_reserved;
86 };
87 
88 
89 #endif /* _MIPS_SIM == _MIPS_SIM_ABI64 || _MIPS_SIM == _MIPS_SIM_NABI32 */
90 
91 #endif /* _UAPI_ASM_SIGCONTEXT_H */
92