blob: 3ad4c10d0d84f6200e6e9a2078088c02d2b6313c [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
Russell King4baa9922008-08-02 10:55:55 +01002 * arch/arm/include/asm/fpstate.h
Linus Torvalds1da177e2005-04-16 15:20:36 -07003 *
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
Linus Torvalds1da177e2005-04-16 15:20:36 -070014
15#ifndef __ASSEMBLY__
16
17/*
18 * VFP storage area has:
19 * - FPEXC, FPSCR, FPINST and FPINST2.
Catalin Marinas25ebee02007-09-25 15:22:24 +010020 * - 16 or 32 double precision data registers
Lucas De Marchi25985ed2011-03-30 22:57:33 -030021 * - an implementation-dependent word of state for FLDMX/FSTMX (pre-ARMv6)
Linus Torvalds1da177e2005-04-16 15:20:36 -070022 *
23 * FPEXC will always be non-zero once the VFP has been used in this process.
24 */
25
26struct vfp_hard_struct {
Catalin Marinas25ebee02007-09-25 15:22:24 +010027#ifdef CONFIG_VFPv3
28 __u64 fpregs[32];
29#else
Linus Torvalds1da177e2005-04-16 15:20:36 -070030 __u64 fpregs[16];
Catalin Marinas25ebee02007-09-25 15:22:24 +010031#endif
Catalin Marinasbb54a332006-04-10 21:32:42 +010032#if __LINUX_ARM_ARCH__ < 6
Linus Torvalds1da177e2005-04-16 15:20:36 -070033 __u32 fpmx_state;
Catalin Marinasbb54a332006-04-10 21:32:42 +010034#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -070035 __u32 fpexc;
36 __u32 fpscr;
37 /*
38 * VFP implementation specific state
39 */
40 __u32 fpinst;
41 __u32 fpinst2;
Catalin Marinas25ebee02007-09-25 15:22:24 +010042
Catalin Marinasc6428462007-01-24 18:47:08 +010043#ifdef CONFIG_SMP
44 __u32 cpu;
45#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -070046};
47
48union vfp_state {
49 struct vfp_hard_struct hard;
50};
51
52extern void vfp_flush_thread(union vfp_state *);
53extern void vfp_release_thread(union vfp_state *);
54
55#define FP_HARD_SIZE 35
56
57struct fp_hard_struct {
58 unsigned int save[FP_HARD_SIZE]; /* as yet undefined */
59};
60
61#define FP_SOFT_SIZE 35
62
63struct fp_soft_struct {
64 unsigned int save[FP_SOFT_SIZE]; /* undefined information */
65};
66
Russell Kingcdaabbd2006-03-12 22:36:06 +000067#define IWMMXT_SIZE 0x98
68
Linus Torvalds1da177e2005-04-16 15:20:36 -070069struct iwmmxt_struct {
Russell Kingcdaabbd2006-03-12 22:36:06 +000070 unsigned int save[IWMMXT_SIZE / sizeof(unsigned int)];
Linus Torvalds1da177e2005-04-16 15:20:36 -070071};
72
73union 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
Lennert Buytenhekc17fad12006-06-27 23:03:03 +010083struct 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
Linus Torvalds1da177e2005-04-16 15:20:36 -070091#endif
92
93#endif