arch/mips/include/asm/fpu_emulator.h

   1 /*
   2  *  This program is free software; you can distribute it and/or modify it
   3  *  under the terms of the GNU General Public License (Version 2) as
   4  *  published by the Free Software Foundation.
   5  *
   6  *  This program is distributed in the hope it will be useful, but WITHOUT
   7  *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
   8  *  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
   9  *  for more details.
  10  *
  11  *  You should have received a copy of the GNU General Public License along
  12  *  with this program; if not, write to the Free Software Foundation, Inc.,
  13  *  59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
  14  *
  15  * Further private data for which no space exists in mips_fpu_struct.
  16  * This should be subsumed into the mips_fpu_struct structure as
  17  * defined in processor.h as soon as the absurd wired absolute assembler
  18  * offsets become dynamic at compile time.
  19  *
  20  * Kevin D. Kissell, kevink@mips.com and Carsten Langgaard, carstenl@mips.com
  21  * Copyright (C) 2000 MIPS Technologies, Inc.  All rights reserved.
  22  */
  23 #ifndef _ASM_FPU_EMULATOR_H
  24 #define _ASM_FPU_EMULATOR_H
  25
  26 #include <asm/break.h>
  27 #include <asm/inst.h>
  28
  29 struct mips_fpu_emulator_stats {
  30         unsigned int emulated;
  31         unsigned int loads;
  32         unsigned int stores;
  33         unsigned int cp1ops;
  34         unsigned int cp1xops;
  35         unsigned int errors;
  36 };
  37
  38 extern struct mips_fpu_emulator_stats fpuemustats;
  39
  40 extern int mips_dsemul(struct pt_regs *regs, mips_instruction ir,
  41         unsigned long cpc);
  42 extern int do_dsemulret(struct pt_regs *xcp);
  43
  44 /*
  45  * Instruction inserted following the badinst to further tag the sequence
  46  */
  47 #define BD_COOKIE 0x0000bd36    /* tne $0, $0 with baggage */
  48
  49 /*
  50  * Break instruction with special math emu break code set
  51  */
  52 #define BREAK_MATH (0x0000000d | (BRK_MEMU << 16))
  53
  54 #endif /* _ASM_FPU_EMULATOR_H */