1 /* 2 * arch/arm/probes/decode-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 #include "decode.h" 19 20 /* 21 * True if current instruction is in an IT block. 22 */ 23 #define in_it_block(cpsr) ((cpsr & 0x06000c00) != 0x00000000) 24 25 /* 26 * Return the condition code to check for the currently executing instruction. 27 * This is in ITSTATE<7:4> which is in CPSR<15:12> but is only valid if 28 * in_it_block returns true. 29 */ 30 #define current_cond(cpsr) ((cpsr >> 12) & 0xf) 31 32 enum probes_t32_action { 33 PROBES_T32_EMULATE_NONE, 34 PROBES_T32_SIMULATE_NOP, 35 PROBES_T32_LDMSTM, 36 PROBES_T32_LDRDSTRD, 37 PROBES_T32_TABLE_BRANCH, 38 PROBES_T32_TST, 39 PROBES_T32_CMP, 40 PROBES_T32_MOV, 41 PROBES_T32_ADDSUB, 42 PROBES_T32_LOGICAL, 43 PROBES_T32_ADDWSUBW_PC, 44 PROBES_T32_ADDWSUBW, 45 PROBES_T32_MOVW, 46 PROBES_T32_SAT, 47 PROBES_T32_BITFIELD, 48 PROBES_T32_SEV, 49 PROBES_T32_WFE, 50 PROBES_T32_MRS, 51 PROBES_T32_BRANCH_COND, 52 PROBES_T32_BRANCH, 53 PROBES_T32_PLDI, 54 PROBES_T32_LDR_LIT, 55 PROBES_T32_LDRSTR, 56 PROBES_T32_SIGN_EXTEND, 57 PROBES_T32_MEDIA, 58 PROBES_T32_REVERSE, 59 PROBES_T32_MUL_ADD, 60 PROBES_T32_MUL_ADD2, 61 PROBES_T32_MUL_ADD_LONG, 62 NUM_PROBES_T32_ACTIONS 63 }; 64 65 enum probes_t16_action { 66 PROBES_T16_ADD_SP, 67 PROBES_T16_CBZ, 68 PROBES_T16_SIGN_EXTEND, 69 PROBES_T16_PUSH, 70 PROBES_T16_POP, 71 PROBES_T16_SEV, 72 PROBES_T16_WFE, 73 PROBES_T16_IT, 74 PROBES_T16_CMP, 75 PROBES_T16_ADDSUB, 76 PROBES_T16_LOGICAL, 77 PROBES_T16_BLX, 78 PROBES_T16_HIREGOPS, 79 PROBES_T16_LDR_LIT, 80 PROBES_T16_LDRHSTRH, 81 PROBES_T16_LDRSTR, 82 PROBES_T16_ADR, 83 PROBES_T16_LDMSTM, 84 PROBES_T16_BRANCH_COND, 85 PROBES_T16_BRANCH, 86 NUM_PROBES_T16_ACTIONS 87 }; 88 89 extern const union decode_item probes_decode_thumb32_table[]; 90 extern const union decode_item probes_decode_thumb16_table[]; 91 92 enum probes_insn __kprobes 93 thumb16_probes_decode_insn(probes_opcode_t insn, struct arch_probes_insn *asi, 94 bool emulate, const union decode_action *actions, 95 const struct decode_checker *checkers[]); 96 enum probes_insn __kprobes 97 thumb32_probes_decode_insn(probes_opcode_t insn, struct arch_probes_insn *asi, 98 bool emulate, const union decode_action *actions, 99 const struct decode_checker *checkers[]); 100 101 #endif 102