1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
2 | /* |
3 | * arch/arm/probes/decode-thumb.h |
4 | * |
5 | * Copyright 2013 Linaro Ltd. |
6 | * Written by: David A. Long |
7 | */ |
8 | |
9 | #ifndef _ARM_KERNEL_PROBES_THUMB_H |
10 | #define _ARM_KERNEL_PROBES_THUMB_H |
11 | |
12 | #include "decode.h" |
13 | |
14 | /* |
15 | * True if current instruction is in an IT block. |
16 | */ |
17 | #define in_it_block(cpsr) ((cpsr & 0x06000c00) != 0x00000000) |
18 | |
19 | /* |
20 | * Return the condition code to check for the currently executing instruction. |
21 | * This is in ITSTATE<7:4> which is in CPSR<15:12> but is only valid if |
22 | * in_it_block returns true. |
23 | */ |
24 | #define current_cond(cpsr) ((cpsr >> 12) & 0xf) |
25 | |
26 | enum probes_t32_action { |
27 | PROBES_T32_EMULATE_NONE, |
28 | PROBES_T32_SIMULATE_NOP, |
29 | PROBES_T32_LDMSTM, |
30 | PROBES_T32_LDRDSTRD, |
31 | PROBES_T32_TABLE_BRANCH, |
32 | PROBES_T32_TST, |
33 | PROBES_T32_CMP, |
34 | PROBES_T32_MOV, |
35 | PROBES_T32_ADDSUB, |
36 | PROBES_T32_LOGICAL, |
37 | PROBES_T32_ADDWSUBW_PC, |
38 | PROBES_T32_ADDWSUBW, |
39 | PROBES_T32_MOVW, |
40 | PROBES_T32_SAT, |
41 | PROBES_T32_BITFIELD, |
42 | PROBES_T32_SEV, |
43 | PROBES_T32_WFE, |
44 | PROBES_T32_MRS, |
45 | PROBES_T32_BRANCH_COND, |
46 | PROBES_T32_BRANCH, |
47 | PROBES_T32_PLDI, |
48 | PROBES_T32_LDR_LIT, |
49 | PROBES_T32_LDRSTR, |
50 | PROBES_T32_SIGN_EXTEND, |
51 | PROBES_T32_MEDIA, |
52 | PROBES_T32_REVERSE, |
53 | PROBES_T32_MUL_ADD, |
54 | PROBES_T32_MUL_ADD2, |
55 | PROBES_T32_MUL_ADD_LONG, |
56 | NUM_PROBES_T32_ACTIONS |
57 | }; |
58 | |
59 | enum probes_t16_action { |
60 | PROBES_T16_ADD_SP, |
61 | PROBES_T16_CBZ, |
62 | PROBES_T16_SIGN_EXTEND, |
63 | PROBES_T16_PUSH, |
64 | PROBES_T16_POP, |
65 | PROBES_T16_SEV, |
66 | PROBES_T16_WFE, |
67 | PROBES_T16_IT, |
68 | PROBES_T16_CMP, |
69 | PROBES_T16_ADDSUB, |
70 | PROBES_T16_LOGICAL, |
71 | PROBES_T16_BLX, |
72 | PROBES_T16_HIREGOPS, |
73 | PROBES_T16_LDR_LIT, |
74 | PROBES_T16_LDRHSTRH, |
75 | PROBES_T16_LDRSTR, |
76 | PROBES_T16_ADR, |
77 | PROBES_T16_LDMSTM, |
78 | PROBES_T16_BRANCH_COND, |
79 | PROBES_T16_BRANCH, |
80 | NUM_PROBES_T16_ACTIONS |
81 | }; |
82 | |
83 | extern const union decode_item probes_decode_thumb32_table[]; |
84 | extern const union decode_item probes_decode_thumb16_table[]; |
85 | |
86 | enum probes_insn __kprobes |
87 | thumb16_probes_decode_insn(probes_opcode_t insn, struct arch_probes_insn *asi, |
88 | bool emulate, const union decode_action *actions, |
89 | const struct decode_checker *checkers[]); |
90 | enum probes_insn __kprobes |
91 | thumb32_probes_decode_insn(probes_opcode_t insn, struct arch_probes_insn *asi, |
92 | bool emulate, const union decode_action *actions, |
93 | const struct decode_checker *checkers[]); |
94 | |
95 | #endif |
96 | |