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fpu_emulator.h

/*
 *  This program is free software; you can distribute it and/or modify it
 *  under the terms of the GNU General Public License (Version 2) as
 *  published by the Free Software Foundation.
 *
 *  This program is distributed in the hope it will be useful, but WITHOUT
 *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 *  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 *  for more details.
 *
 *  You should have received a copy of the GNU General Public License along
 *  with this program; if not, write to the Free Software Foundation, Inc.,
 *  59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
 *
 * Further private data for which no space exists in mips_fpu_struct.
 * This should be subsumed into the mips_fpu_struct structure as
 * defined in processor.h as soon as the absurd wired absolute assembler
 * offsets become dynamic at compile time.
 *
 * Kevin D. Kissell, kevink@mips.com and Carsten Langgaard, carstenl@mips.com
 * Copyright (C) 2000 MIPS Technologies, Inc.  All rights reserved.
 */
#ifndef _ASM_FPU_EMULATOR_H
#define _ASM_FPU_EMULATOR_H

#include <asm/break.h>
#include <asm/inst.h>

00029 struct mips_fpu_emulator_stats {
      unsigned int emulated;
      unsigned int loads;
      unsigned int stores;
      unsigned int cp1ops;
      unsigned int cp1xops;
      unsigned int errors;
};

extern struct mips_fpu_emulator_stats fpuemustats;

extern int mips_dsemul(struct pt_regs *regs, mips_instruction ir,
      unsigned long cpc);
extern int do_dsemulret(struct pt_regs *xcp);

/*
 * Instruction inserted following the badinst to further tag the sequence
 */
#define BD_COOKIE 0x0000bd36  /* tne $0, $0 with baggage */

/*
 * Break instruction with special math emu break code set
 */
#define BREAK_MATH (0x0000000d | (BRK_MEMU << 16))

#endif /* _ASM_FPU_EMULATOR_H */

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