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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
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 *
Atsushi Nemotoeae89072006-05-16 01:26:03 +090015 * Further private data for which no space exists in mips_fpu_struct.
16 * This should be subsumed into the mips_fpu_struct structure as
Linus Torvalds1da177e2005-04-16 15:20:36 -070017 * 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
Ralf Baechleba3049e2008-10-28 17:38:42 +000026#include <asm/break.h>
27#include <asm/inst.h>
David Daneyb6ee75e2009-11-05 11:34:26 -080028#include <asm/local.h>
29
30#ifdef CONFIG_DEBUG_FS
Ralf Baechleba3049e2008-10-28 17:38:42 +000031
Ralf Baechle4a99d1e2005-05-11 12:02:48 +000032struct mips_fpu_emulator_stats {
David Daneyb6ee75e2009-11-05 11:34:26 -080033 local_t emulated;
34 local_t loads;
35 local_t stores;
36 local_t cp1ops;
37 local_t cp1xops;
38 local_t errors;
Linus Torvalds1da177e2005-04-16 15:20:36 -070039};
40
David Daneyb6ee75e2009-11-05 11:34:26 -080041DECLARE_PER_CPU(struct mips_fpu_emulator_stats, fpuemustats);
42
43#define MIPS_FPU_EMU_INC_STATS(M) \
Ralf Baechlec948aca2010-03-08 19:38:13 +010044do { \
45 preempt_disable(); \
46 __local_inc(&__get_cpu_var(fpuemustats).M); \
47 preempt_enable(); \
48} while (0)
David Daneyb6ee75e2009-11-05 11:34:26 -080049
50#else
51#define MIPS_FPU_EMU_INC_STATS(M) do { } while (0)
52#endif /* CONFIG_DEBUG_FS */
Ralf Baechle0bd5d2e2005-02-28 17:29:15 +000053
Ralf Baechleba3049e2008-10-28 17:38:42 +000054extern int mips_dsemul(struct pt_regs *regs, mips_instruction ir,
55 unsigned long cpc);
56extern int do_dsemulret(struct pt_regs *xcp);
57
58/*
59 * Instruction inserted following the badinst to further tag the sequence
60 */
61#define BD_COOKIE 0x0000bd36 /* tne $0, $0 with baggage */
62
63/*
64 * Break instruction with special math emu break code set
65 */
66#define BREAK_MATH (0x0000000d | (BRK_MEMU << 16))
67
Linus Torvalds1da177e2005-04-16 15:20:36 -070068#endif /* _ASM_FPU_EMULATOR_H */