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Commit | Line | Data |
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1da177e4 | 1 | /* |
4baa9922 | 2 | * arch/arm/include/asm/fpstate.h |
1da177e4 LT |
3 | * |
4 | * Copyright (C) 1995 Russell King | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License version 2 as | |
8 | * published by the Free Software Foundation. | |
9 | */ | |
10 | ||
11 | #ifndef __ASM_ARM_FPSTATE_H | |
12 | #define __ASM_ARM_FPSTATE_H | |
13 | ||
1da177e4 LT |
14 | |
15 | #ifndef __ASSEMBLY__ | |
16 | ||
17 | /* | |
18 | * VFP storage area has: | |
19 | * - FPEXC, FPSCR, FPINST and FPINST2. | |
25ebee02 | 20 | * - 16 or 32 double precision data registers |
25985edc | 21 | * - an implementation-dependent word of state for FLDMX/FSTMX (pre-ARMv6) |
1da177e4 LT |
22 | * |
23 | * FPEXC will always be non-zero once the VFP has been used in this process. | |
24 | */ | |
25 | ||
26 | struct vfp_hard_struct { | |
25ebee02 CM |
27 | #ifdef CONFIG_VFPv3 |
28 | __u64 fpregs[32]; | |
29 | #else | |
1da177e4 | 30 | __u64 fpregs[16]; |
25ebee02 | 31 | #endif |
bb54a335 | 32 | #if __LINUX_ARM_ARCH__ < 6 |
1da177e4 | 33 | __u32 fpmx_state; |
bb54a335 | 34 | #endif |
1da177e4 LT |
35 | __u32 fpexc; |
36 | __u32 fpscr; | |
37 | /* | |
38 | * VFP implementation specific state | |
39 | */ | |
40 | __u32 fpinst; | |
41 | __u32 fpinst2; | |
25ebee02 | 42 | |
c6428464 CM |
43 | #ifdef CONFIG_SMP |
44 | __u32 cpu; | |
45 | #endif | |
1da177e4 LT |
46 | }; |
47 | ||
48 | union vfp_state { | |
49 | struct vfp_hard_struct hard; | |
50 | }; | |
51 | ||
52 | extern void vfp_flush_thread(union vfp_state *); | |
53 | extern void vfp_release_thread(union vfp_state *); | |
54 | ||
55 | #define FP_HARD_SIZE 35 | |
56 | ||
57 | struct fp_hard_struct { | |
58 | unsigned int save[FP_HARD_SIZE]; /* as yet undefined */ | |
59 | }; | |
60 | ||
61 | #define FP_SOFT_SIZE 35 | |
62 | ||
63 | struct fp_soft_struct { | |
64 | unsigned int save[FP_SOFT_SIZE]; /* undefined information */ | |
65 | }; | |
66 | ||
cdaabbd7 RK |
67 | #define IWMMXT_SIZE 0x98 |
68 | ||
1da177e4 | 69 | struct iwmmxt_struct { |
cdaabbd7 | 70 | unsigned int save[IWMMXT_SIZE / sizeof(unsigned int)]; |
1da177e4 LT |
71 | }; |
72 | ||
73 | union fp_state { | |
74 | struct fp_hard_struct hard; | |
75 | struct fp_soft_struct soft; | |
76 | #ifdef CONFIG_IWMMXT | |
77 | struct iwmmxt_struct iwmmxt; | |
78 | #endif | |
79 | }; | |
80 | ||
81 | #define FP_SIZE (sizeof(union fp_state) / sizeof(int)) | |
82 | ||
c17fad11 LB |
83 | struct crunch_state { |
84 | unsigned int mvdx[16][2]; | |
85 | unsigned int mvax[4][3]; | |
86 | unsigned int dspsc[2]; | |
87 | }; | |
88 | ||
89 | #define CRUNCH_SIZE sizeof(struct crunch_state) | |
90 | ||
1da177e4 LT |
91 | #endif |
92 | ||
93 | #endif |