summaryrefslogtreecommitdiffstats
path: root/arch/mips/include/asm/fpu_emulator.h
blob: e5189572956c5221c378f542d9c945a0ca103a2d (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
/*
 *  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>

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 */