1 /*
2 * This file is subject to the terms and conditions of the GNU General Public
3 * License. See the file "COPYING" in the main directory of this archive
4 * for more details.
5 *
6 * Copyright (c) 2014 Imagination Technologies Ltd.
7 * Author: Markos Chandras <markos.chandras@imgtec.com>
8 */
9
10 #ifndef __ASM_MIPS_R2_TO_R6_EMUL_H
11 #define __ASM_MIPS_R2_TO_R6_EMUL_H
12
13 struct mips_r2_emulator_stats {
14 u64 movs;
15 u64 hilo;
16 u64 muls;
17 u64 divs;
18 u64 dsps;
19 u64 bops;
20 u64 traps;
21 u64 fpus;
22 u64 loads;
23 u64 stores;
24 u64 llsc;
25 u64 dsemul;
26 };
27
28 struct mips_r2br_emulator_stats {
29 u64 jrs;
30 u64 bltzl;
31 u64 bgezl;
32 u64 bltzll;
33 u64 bgezll;
34 u64 bltzall;
35 u64 bgezall;
36 u64 bltzal;
37 u64 bgezal;
38 u64 beql;
39 u64 bnel;
40 u64 blezl;
41 u64 bgtzl;
42 };
43
44 #ifdef CONFIG_DEBUG_FS
45
46 #define MIPS_R2_STATS(M) \
47 do { \
48 u32 nir; \
49 int err; \
50 \
51 preempt_disable(); \
52 __this_cpu_inc(mipsr2emustats.M); \
53 err = __get_user(nir, (u32 __user *)regs->cp0_epc); \
54 if (!err) { \
55 if (nir == BREAK_MATH(0)) \
56 __this_cpu_inc(mipsr2bdemustats.M); \
57 } \
58 preempt_enable(); \
59 } while (0)
60
61 #define MIPS_R2BR_STATS(M) \
62 do { \
63 preempt_disable(); \
64 __this_cpu_inc(mipsr2bremustats.M); \
65 preempt_enable(); \
66 } while (0)
67
68 #else
69
70 #define MIPS_R2_STATS(M) do { } while (0)
71 #define MIPS_R2BR_STATS(M) do { } while (0)
72
73 #endif /* CONFIG_DEBUG_FS */
74
75 struct r2_decoder_table {
76 u32 mask;
77 u32 code;
78 int (*func)(struct pt_regs *regs, u32 inst);
79 };
80
81
82 extern void do_trap_or_bp(struct pt_regs *regs, unsigned int code, int si_code,
83 const char *str);
84
85 #ifndef CONFIG_MIPSR2_TO_R6_EMULATOR
86 static int mipsr2_emulation;
mipsr2_decoder(struct pt_regs * regs,u32 inst,unsigned long * fcr31)87 static inline int mipsr2_decoder(struct pt_regs *regs, u32 inst,
88 unsigned long *fcr31)
89 {
90 return 0;
91 };
92 #else
93 /* MIPS R2 Emulator ON/OFF */
94 extern int mipsr2_emulation;
95 extern int mipsr2_decoder(struct pt_regs *regs, u32 inst,
96 unsigned long *fcr31);
97 #endif /* CONFIG_MIPSR2_TO_R6_EMULATOR */
98
99 #define NO_R6EMU (cpu_has_mips_r6 && !mipsr2_emulation)
100
101 #endif /* __ASM_MIPS_R2_TO_R6_EMUL_H */
102