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 98