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