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2874c5fd | 1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
e3031b32 MN |
2 | /* |
3 | * Copyright (C) 2016 Imagination Technologies | |
ca208b5f | 4 | * Author: Marcin Nowakowski <marcin.nowakowski@mips.com> |
e3031b32 MN |
5 | */ |
6 | ||
7 | #ifndef __PROBES_COMMON_H | |
8 | #define __PROBES_COMMON_H | |
9 | ||
10 | #include <asm/inst.h> | |
11 | ||
d05c5130 MN |
12 | int __insn_is_compact_branch(union mips_instruction insn); |
13 | ||
e3031b32 MN |
14 | static inline int __insn_has_delay_slot(const union mips_instruction insn) |
15 | { | |
16 | switch (insn.i_format.opcode) { | |
17 | /* | |
18 | * jr and jalr are in r_format format. | |
19 | */ | |
20 | case spec_op: | |
21 | switch (insn.r_format.func) { | |
22 | case jalr_op: | |
23 | case jr_op: | |
24 | return 1; | |
25 | } | |
26 | break; | |
27 | ||
28 | /* | |
29 | * This group contains: | |
30 | * bltz_op, bgez_op, bltzl_op, bgezl_op, | |
31 | * bltzal_op, bgezal_op, bltzall_op, bgezall_op. | |
32 | */ | |
33 | case bcond_op: | |
34 | switch (insn.i_format.rt) { | |
35 | case bltz_op: | |
36 | case bltzl_op: | |
37 | case bgez_op: | |
38 | case bgezl_op: | |
39 | case bltzal_op: | |
40 | case bltzall_op: | |
41 | case bgezal_op: | |
42 | case bgezall_op: | |
43 | case bposge32_op: | |
44 | return 1; | |
45 | } | |
46 | break; | |
47 | ||
48 | /* | |
49 | * These are unconditional and in j_format. | |
50 | */ | |
51 | case jal_op: | |
52 | case j_op: | |
53 | case beq_op: | |
54 | case beql_op: | |
55 | case bne_op: | |
56 | case bnel_op: | |
57 | case blez_op: /* not really i_format */ | |
58 | case blezl_op: | |
59 | case bgtz_op: | |
60 | case bgtzl_op: | |
61 | return 1; | |
62 | ||
63 | /* | |
64 | * And now the FPA/cp1 branch instructions. | |
65 | */ | |
66 | case cop1_op: | |
67 | #ifdef CONFIG_CPU_CAVIUM_OCTEON | |
68 | case lwc2_op: /* This is bbit0 on Octeon */ | |
69 | case ldc2_op: /* This is bbit032 on Octeon */ | |
70 | case swc2_op: /* This is bbit1 on Octeon */ | |
71 | case sdc2_op: /* This is bbit132 on Octeon */ | |
72 | #endif | |
73 | return 1; | |
74 | } | |
75 | ||
76 | return 0; | |
77 | } | |
78 | ||
79 | #endif /* __PROBES_COMMON_H */ |