Merge branch 'for-2.6.28' of git://linux-nfs.org/~bfields/linux
[linux-2.6-block.git] / arch / mips / include / asm / fpu_emulator.h
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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 *
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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
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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
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26#include <asm/break.h>
27#include <asm/inst.h>
28
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29struct 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;
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36};
37
4a99d1e2 38extern struct mips_fpu_emulator_stats fpuemustats;
0bd5d2e9 39
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40extern int mips_dsemul(struct pt_regs *regs, mips_instruction ir,
41 unsigned long cpc);
42extern 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
1da177e4 54#endif /* _ASM_FPU_EMULATOR_H */