2 * linux/include/asm-arm/fpstate.h
4 * Copyright (C) 1995 Russell King
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.
11 #ifndef __ASM_ARM_FPSTATE_H
12 #define __ASM_ARM_FPSTATE_H
18 * VFP storage area has:
19 * - FPEXC, FPSCR, FPINST and FPINST2.
20 * - 16 or 32 double precision data registers
21 * - an implementation-dependant word of state for FLDMX/FSTMX (pre-ARMv6)
23 * FPEXC will always be non-zero once the VFP has been used in this process.
26 struct vfp_hard_struct {
32 #if __LINUX_ARM_ARCH__ < 6
38 * VFP implementation specific state
49 struct vfp_hard_struct hard;
52 extern void vfp_flush_thread(union vfp_state *);
53 extern void vfp_release_thread(union vfp_state *);
55 #define FP_HARD_SIZE 35
57 struct fp_hard_struct {
58 unsigned int save[FP_HARD_SIZE]; /* as yet undefined */
61 #define FP_SOFT_SIZE 35
63 struct fp_soft_struct {
64 unsigned int save[FP_SOFT_SIZE]; /* undefined information */
67 #define IWMMXT_SIZE 0x98
69 struct iwmmxt_struct {
70 unsigned int save[IWMMXT_SIZE / sizeof(unsigned int)];
74 struct fp_hard_struct hard;
75 struct fp_soft_struct soft;
77 struct iwmmxt_struct iwmmxt;
81 #define FP_SIZE (sizeof(union fp_state) / sizeof(int))
84 unsigned int mvdx[16][2];
85 unsigned int mvax[4][3];
86 unsigned int dspsc[2];
89 #define CRUNCH_SIZE sizeof(struct crunch_state)