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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-dependant word of state for FLDMX/FSTMX (pre-ARMv6)
 * 
 *  FPEXC will always be non-zero once the VFP has been used in this process.
 */

00026 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
};

00048 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

00057 struct fp_hard_struct {
      unsigned int save[FP_HARD_SIZE];          /* as yet undefined */
};

#define FP_SOFT_SIZE 35

00063 struct fp_soft_struct {
      unsigned int save[FP_SOFT_SIZE];          /* undefined information */
};

#define IWMMXT_SIZE     0x98

00069 struct iwmmxt_struct {
      unsigned int save[IWMMXT_SIZE / sizeof(unsigned int)];
};

00073 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))

00083 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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