Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * linux/include/asm-arm/fpstate.h |
| 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 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 14 | |
| 15 | #ifndef __ASSEMBLY__ |
| 16 | |
| 17 | /* |
| 18 | * VFP storage area has: |
| 19 | * - FPEXC, FPSCR, FPINST and FPINST2. |
Catalin Marinas | 25ebee0 | 2007-09-25 15:22:24 +0100 | [diff] [blame] | 20 | * - 16 or 32 double precision data registers |
| 21 | * - an implementation-dependant word of state for FLDMX/FSTMX (pre-ARMv6) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 22 | * |
| 23 | * FPEXC will always be non-zero once the VFP has been used in this process. |
| 24 | */ |
| 25 | |
| 26 | struct vfp_hard_struct { |
Catalin Marinas | 25ebee0 | 2007-09-25 15:22:24 +0100 | [diff] [blame] | 27 | #ifdef CONFIG_VFPv3 |
| 28 | __u64 fpregs[32]; |
| 29 | #else |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 30 | __u64 fpregs[16]; |
Catalin Marinas | 25ebee0 | 2007-09-25 15:22:24 +0100 | [diff] [blame] | 31 | #endif |
Catalin Marinas | bb54a33 | 2006-04-10 21:32:42 +0100 | [diff] [blame] | 32 | #if __LINUX_ARM_ARCH__ < 6 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 33 | __u32 fpmx_state; |
Catalin Marinas | bb54a33 | 2006-04-10 21:32:42 +0100 | [diff] [blame] | 34 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 35 | __u32 fpexc; |
| 36 | __u32 fpscr; |
| 37 | /* |
| 38 | * VFP implementation specific state |
| 39 | */ |
| 40 | __u32 fpinst; |
| 41 | __u32 fpinst2; |
Catalin Marinas | 25ebee0 | 2007-09-25 15:22:24 +0100 | [diff] [blame] | 42 | |
Catalin Marinas | c642846 | 2007-01-24 18:47:08 +0100 | [diff] [blame] | 43 | #ifdef CONFIG_SMP |
| 44 | __u32 cpu; |
| 45 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
Russell King | cdaabbd | 2006-03-12 22:36:06 +0000 | [diff] [blame] | 67 | #define IWMMXT_SIZE 0x98 |
| 68 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 69 | struct iwmmxt_struct { |
Russell King | cdaabbd | 2006-03-12 22:36:06 +0000 | [diff] [blame] | 70 | unsigned int save[IWMMXT_SIZE / sizeof(unsigned int)]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
Lennert Buytenhek | c17fad1 | 2006-06-27 23:03:03 +0100 | [diff] [blame] | 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 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 91 | #endif |
| 92 | |
| 93 | #endif |