1/* SPDX-License-Identifier: GPL-2.0-only */
 2/*
 3 *  arch/arm/include/asm/fpstate.h
 4 *
 5 *  Copyright (C) 1995 Russell King
 6 */
 7
 8#ifndef __ASM_ARM_FPSTATE_H
 9#define __ASM_ARM_FPSTATE_H
10
11
12#ifndef __ASSEMBLY__
13
14/*
15 * VFP storage area has:
16 *  - FPEXC, FPSCR, FPINST and FPINST2.
17 *  - 16 or 32 double precision data registers
18 *  - an implementation-dependent word of state for FLDMX/FSTMX (pre-ARMv6)
19 * 
20 *  FPEXC will always be non-zero once the VFP has been used in this process.
21 */
22
23struct vfp_hard_struct {
24#ifdef CONFIG_VFPv3
25	__u64 fpregs[32];
26#else
27	__u64 fpregs[16];
28#endif
29#if __LINUX_ARM_ARCH__ < 6
30	__u32 fpmx_state;
31#endif
32	__u32 fpexc;
33	__u32 fpscr;
34	/*
35	 * VFP implementation specific state
36	 */
37	__u32 fpinst;
38	__u32 fpinst2;
39
40#ifdef CONFIG_SMP
41	__u32 cpu;
42#endif
43};
44
45union vfp_state {
46	struct vfp_hard_struct	hard;
47};
48
49#define FP_HARD_SIZE 35
50
51struct fp_hard_struct {
52	unsigned int save[FP_HARD_SIZE];		/* as yet undefined */
53};
54
55#define FP_SOFT_SIZE 35
56
57struct fp_soft_struct {
58	unsigned int save[FP_SOFT_SIZE];		/* undefined information */
59};
60
61#define IWMMXT_SIZE	0x98
62
63struct iwmmxt_struct {
64	unsigned int save[IWMMXT_SIZE / sizeof(unsigned int)];
65};
66
67union fp_state {
68	struct fp_hard_struct	hard;
69	struct fp_soft_struct	soft;
70#ifdef CONFIG_IWMMXT
71	struct iwmmxt_struct	iwmmxt;
72#endif
73};
74
75#define FP_SIZE (sizeof(union fp_state) / sizeof(int))
76
77#endif
78
79#endif

 1/* SPDX-License-Identifier: GPL-2.0-only */
 2/*
 3 *  arch/arm/include/asm/fpstate.h
 4 *
 5 *  Copyright (C) 1995 Russell King
 6 */
 7
 8#ifndef __ASM_ARM_FPSTATE_H
 9#define __ASM_ARM_FPSTATE_H
10
11
12#ifndef __ASSEMBLY__
13
14/*
15 * VFP storage area has:
16 *  - FPEXC, FPSCR, FPINST and FPINST2.
17 *  - 16 or 32 double precision data registers
18 *  - an implementation-dependent word of state for FLDMX/FSTMX (pre-ARMv6)
19 * 
20 *  FPEXC will always be non-zero once the VFP has been used in this process.
21 */
22
23struct vfp_hard_struct {
24#ifdef CONFIG_VFPv3
25	__u64 fpregs[32];
26#else
27	__u64 fpregs[16];
28#endif
29#if __LINUX_ARM_ARCH__ < 6
30	__u32 fpmx_state;
31#endif
32	__u32 fpexc;
33	__u32 fpscr;
34	/*
35	 * VFP implementation specific state
36	 */
37	__u32 fpinst;
38	__u32 fpinst2;
39
40#ifdef CONFIG_SMP
41	__u32 cpu;
42#endif
43};
44
45union vfp_state {
46	struct vfp_hard_struct	hard;
47};
48
49#define FP_HARD_SIZE 35
50
51struct fp_hard_struct {
52	unsigned int save[FP_HARD_SIZE];		/* as yet undefined */
53};
54
55#define FP_SOFT_SIZE 35
56
57struct fp_soft_struct {
58	unsigned int save[FP_SOFT_SIZE];		/* undefined information */
59};
60
61#define IWMMXT_SIZE	0x98
62
63struct iwmmxt_struct {
64	unsigned int save[IWMMXT_SIZE / sizeof(unsigned int)];
65};
66
67union fp_state {
68	struct fp_hard_struct	hard;
69	struct fp_soft_struct	soft;
70#ifdef CONFIG_IWMMXT
71	struct iwmmxt_struct	iwmmxt;
72#endif
73};
74
75#define FP_SIZE (sizeof(union fp_state) / sizeof(int))
76
77#endif
78
79#endif