Merge tag 'v3.15-rc1' into perf/urgent
[sfrench/cifs-2.6.git] / arch / arm / kernel / probes-thumb.h
1 /*
2  * arch/arm/kernel/probes-thumb.h
3  *
4  * Copyright 2013 Linaro Ltd.
5  * Written by: David A. Long
6  *
7  * The code contained herein is licensed under the GNU General Public
8  * License. You may obtain a copy of the GNU General Public License
9  * Version 2 or later at the following locations:
10  *
11  * http://www.opensource.org/licenses/gpl-license.html
12  * http://www.gnu.org/copyleft/gpl.html
13  */
14
15 #ifndef _ARM_KERNEL_PROBES_THUMB_H
16 #define  _ARM_KERNEL_PROBES_THUMB_H
17
18 /*
19  * True if current instruction is in an IT block.
20  */
21 #define in_it_block(cpsr)       ((cpsr & 0x06000c00) != 0x00000000)
22
23 /*
24  * Return the condition code to check for the currently executing instruction.
25  * This is in ITSTATE<7:4> which is in CPSR<15:12> but is only valid if
26  * in_it_block returns true.
27  */
28 #define current_cond(cpsr)      ((cpsr >> 12) & 0xf)
29
30 enum probes_t32_action {
31         PROBES_T32_EMULATE_NONE,
32         PROBES_T32_SIMULATE_NOP,
33         PROBES_T32_LDMSTM,
34         PROBES_T32_LDRDSTRD,
35         PROBES_T32_TABLE_BRANCH,
36         PROBES_T32_TST,
37         PROBES_T32_CMP,
38         PROBES_T32_MOV,
39         PROBES_T32_ADDSUB,
40         PROBES_T32_LOGICAL,
41         PROBES_T32_ADDWSUBW_PC,
42         PROBES_T32_ADDWSUBW,
43         PROBES_T32_MOVW,
44         PROBES_T32_SAT,
45         PROBES_T32_BITFIELD,
46         PROBES_T32_SEV,
47         PROBES_T32_WFE,
48         PROBES_T32_MRS,
49         PROBES_T32_BRANCH_COND,
50         PROBES_T32_BRANCH,
51         PROBES_T32_PLDI,
52         PROBES_T32_LDR_LIT,
53         PROBES_T32_LDRSTR,
54         PROBES_T32_SIGN_EXTEND,
55         PROBES_T32_MEDIA,
56         PROBES_T32_REVERSE,
57         PROBES_T32_MUL_ADD,
58         PROBES_T32_MUL_ADD2,
59         PROBES_T32_MUL_ADD_LONG,
60         NUM_PROBES_T32_ACTIONS
61 };
62
63 enum probes_t16_action {
64         PROBES_T16_ADD_SP,
65         PROBES_T16_CBZ,
66         PROBES_T16_SIGN_EXTEND,
67         PROBES_T16_PUSH,
68         PROBES_T16_POP,
69         PROBES_T16_SEV,
70         PROBES_T16_WFE,
71         PROBES_T16_IT,
72         PROBES_T16_CMP,
73         PROBES_T16_ADDSUB,
74         PROBES_T16_LOGICAL,
75         PROBES_T16_BLX,
76         PROBES_T16_HIREGOPS,
77         PROBES_T16_LDR_LIT,
78         PROBES_T16_LDRHSTRH,
79         PROBES_T16_LDRSTR,
80         PROBES_T16_ADR,
81         PROBES_T16_LDMSTM,
82         PROBES_T16_BRANCH_COND,
83         PROBES_T16_BRANCH,
84         NUM_PROBES_T16_ACTIONS
85 };
86
87 extern const union decode_item probes_decode_thumb32_table[];
88 extern const union decode_item probes_decode_thumb16_table[];
89
90 enum probes_insn __kprobes
91 thumb16_probes_decode_insn(probes_opcode_t insn, struct arch_probes_insn *asi,
92                 bool emulate, const union decode_action *actions);
93 enum probes_insn __kprobes
94 thumb32_probes_decode_insn(probes_opcode_t insn, struct arch_probes_insn *asi,
95                 bool emulate, const union decode_action *actions);
96
97 #endif