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#include <asm/local.h>
29
30#ifdef CONFIG_DEBUG_FS
31
32struct mips_fpu_emulator_stats {
33	local_t emulated;
34	local_t loads;
35	local_t stores;
36	local_t cp1ops;
37	local_t cp1xops;
38	local_t errors;
39};
40
41DECLARE_PER_CPU(struct mips_fpu_emulator_stats, fpuemustats);
42
43#define MIPS_FPU_EMU_INC_STATS(M)					\
44do {									\
45	preempt_disable();						\
46	__local_inc(&__get_cpu_var(fpuemustats).M);			\
47	preempt_enable();						\
48} while (0)
49
50#else
51#define MIPS_FPU_EMU_INC_STATS(M) do { } while (0)
52#endif /* CONFIG_DEBUG_FS */
53
54extern 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
68#endif /* _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#include <asm/local.h>
29
30#ifdef CONFIG_DEBUG_FS
31
32struct mips_fpu_emulator_stats {
33	local_t emulated;
34	local_t loads;
35	local_t stores;
36	local_t cp1ops;
37	local_t cp1xops;
38	local_t errors;
39};
40
41DECLARE_PER_CPU(struct mips_fpu_emulator_stats, fpuemustats);
42
43#define MIPS_FPU_EMU_INC_STATS(M)					\
44do {									\
45	preempt_disable();						\
46	__local_inc(&__get_cpu_var(fpuemustats).M);			\
47	preempt_enable();						\
48} while (0)
49
50#else
51#define MIPS_FPU_EMU_INC_STATS(M) do { } while (0)
52#endif /* CONFIG_DEBUG_FS */
53
54extern int mips_dsemul(struct pt_regs *regs, mips_instruction ir,
55	unsigned long cpc);
56extern int do_dsemulret(struct pt_regs *xcp);
57extern int fpu_emulator_cop1Handler(struct pt_regs *xcp,
58				    struct mips_fpu_struct *ctx, int has_fpu,
59				    void *__user *fault_addr);
60int process_fpemu_return(int sig, void __user *fault_addr);
61int mm_isBranchInstr(struct pt_regs *regs, struct mm_decoded_insn dec_insn,
62		     unsigned long *contpc);
63
64/*
65 * Instruction inserted following the badinst to further tag the sequence
66 */
67#define BD_COOKIE 0x0000bd36	/* tne $0, $0 with baggage */
68
69/*
70 * Break instruction with special math emu break code set
71 */
72#define BREAK_MATH (0x0000000d | (BRK_MEMU << 16))
73
74#endif /* _ASM_FPU_EMULATOR_H */