Release 4.11 arch/arm/include/asm/fpstate.h

/*
 *  arch/arm/include/asm/fpstate.h
 *
 *  Copyright (C) 1995 Russell King
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

#ifndef __ASM_ARM_FPSTATE_H

#define __ASM_ARM_FPSTATE_H


#ifndef __ASSEMBLY__

/*
 * VFP storage area has:
 *  - FPEXC, FPSCR, FPINST and FPINST2.
 *  - 16 or 32 double precision data registers
 *  - an implementation-dependent word of state for FLDMX/FSTMX (pre-ARMv6)
 * 
 *  FPEXC will always be non-zero once the VFP has been used in this process.
 */


struct vfp_hard_struct {
#ifdef CONFIG_VFPv3
	
__u64 fpregs[32];
#else
	__u64 fpregs[16];
#endif
#if __LINUX_ARM_ARCH__ < 6
	
__u32 fpmx_state;
#endif
	
__u32 fpexc;
	
__u32 fpscr;
	/*
         * VFP implementation specific state
         */
	
__u32 fpinst;
	
__u32 fpinst2;

#ifdef CONFIG_SMP
	
__u32 cpu;
#endif
};


union vfp_state {
	
struct vfp_hard_struct	hard;
};

extern void vfp_flush_thread(union vfp_state *);
extern void vfp_release_thread(union vfp_state *);


#define FP_HARD_SIZE 35


struct fp_hard_struct {
	
unsigned int save[FP_HARD_SIZE];		/* as yet undefined */
};


#define FP_SOFT_SIZE 35


struct fp_soft_struct {
	
unsigned int save[FP_SOFT_SIZE];		/* undefined information */
};


#define IWMMXT_SIZE	0x98


struct iwmmxt_struct {
	
unsigned int save[IWMMXT_SIZE / sizeof(unsigned int)];
};


union fp_state {
	
struct fp_hard_struct	hard;
	
struct fp_soft_struct	soft;
#ifdef CONFIG_IWMMXT
	
struct iwmmxt_struct	iwmmxt;
#endif
};


#define FP_SIZE (sizeof(union fp_state) / sizeof(int))


struct crunch_state {
	
unsigned int	mvdx[16][2];
	
unsigned int	mvax[4][3];
	
unsigned int	dspsc[2];
};


#define CRUNCH_SIZE	sizeof(struct crunch_state)

#endif

#endif
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Directory: arch/arm/include/asm

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