2 * arch/arm/kernel/probes-thumb.h
4 * Copyright 2013 Linaro Ltd.
5 * Written by: David A. Long
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:
11 * http://www.opensource.org/licenses/gpl-license.html
12 * http://www.gnu.org/copyleft/gpl.html
15 #ifndef _ARM_KERNEL_PROBES_THUMB_H
16 #define _ARM_KERNEL_PROBES_THUMB_H
19 * True if current instruction is in an IT block.
21 #define in_it_block(cpsr) ((cpsr & 0x06000c00) != 0x00000000)
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.
28 #define current_cond(cpsr) ((cpsr >> 12) & 0xf)
30 enum probes_t32_action {
31 PROBES_T32_EMULATE_NONE,
32 PROBES_T32_SIMULATE_NOP,
35 PROBES_T32_TABLE_BRANCH,
41 PROBES_T32_ADDWSUBW_PC,
49 PROBES_T32_BRANCH_COND,
54 PROBES_T32_SIGN_EXTEND,
59 PROBES_T32_MUL_ADD_LONG,
60 NUM_PROBES_T32_ACTIONS
63 enum probes_t16_action {
66 PROBES_T16_SIGN_EXTEND,
82 PROBES_T16_BRANCH_COND,
84 NUM_PROBES_T16_ACTIONS
87 extern const union decode_item probes_decode_thumb32_table[];
88 extern const union decode_item probes_decode_thumb16_table[];
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);