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 14 15 #ifndef __ASSEMBLY__ 16 17 /* 18 * VFP storage area has: 19 * - FPEXC, FPSCR, FPINST and FPINST2. 20 * - 16 double precision data registers 21 * - an implementation-dependant word of state for FLDMX/FSTMX 22 * 23 * FPEXC will always be non-zero once the VFP has been used in this process. 24 */ 25 26 struct vfp_hard_struct { 27 __u64 fpregs[16]; 28 #if __LINUX_ARM_ARCH__ < 6 29 __u32 fpmx_state; 30 #endif 31 __u32 fpexc; 32 __u32 fpscr; 33 /* 34 * VFP implementation specific state 35 */ 36 __u32 fpinst; 37 __u32 fpinst2; 38 }; 39 40 union vfp_state { 41 struct vfp_hard_struct hard; 42 }; 43 44 extern void vfp_flush_thread(union vfp_state *); 45 extern void vfp_release_thread(union vfp_state *); 46 47 #define FP_HARD_SIZE 35 48 49 struct fp_hard_struct { 50 unsigned int save[FP_HARD_SIZE]; /* as yet undefined */ 51 }; 52 53 #define FP_SOFT_SIZE 35 54 55 struct fp_soft_struct { 56 unsigned int save[FP_SOFT_SIZE]; /* undefined information */ 57 }; 58 59 #define IWMMXT_SIZE 0x98 60 61 struct iwmmxt_struct { 62 unsigned int save[IWMMXT_SIZE / sizeof(unsigned int)]; 63 }; 64 65 union fp_state { 66 struct fp_hard_struct hard; 67 struct fp_soft_struct soft; 68 #ifdef CONFIG_IWMMXT 69 struct iwmmxt_struct iwmmxt; 70 #endif 71 }; 72 73 #define FP_SIZE (sizeof(union fp_state) / sizeof(int)) 74 75 struct crunch_state { 76 unsigned int mvdx[16][2]; 77 unsigned int mvax[4][3]; 78 unsigned int dspsc[2]; 79 }; 80 81 #define CRUNCH_SIZE sizeof(struct crunch_state) 82 83 #endif 84 85 #endif 86
