/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
 * arch/arm/probes/decode-thumb.h
 *
 * Copyright 2013 Linaro Ltd.
 * Written by: David A. Long
 */

#ifndef _ARM_KERNEL_PROBES_THUMB_H
#define  _ARM_KERNEL_PROBES_THUMB_H

#include "decode.h"

/*
 * True if current instruction is in an IT block.
 */
#define in_it_block(cpsr)       ((cpsr & 0x06000c00) != 0x00000000)

/*
 * Return the condition code to check for the currently executing instruction.
 * This is in ITSTATE<7:4> which is in CPSR<15:12> but is only valid if
 * in_it_block returns true.
 */
#define current_cond(cpsr)      ((cpsr >> 12) & 0xf)

enum probes_t32_action {
        PROBES_T32_EMULATE_NONE,
        PROBES_T32_SIMULATE_NOP,
        PROBES_T32_LDMSTM,
        PROBES_T32_LDRDSTRD,
        PROBES_T32_TABLE_BRANCH,
        PROBES_T32_TST,
        PROBES_T32_CMP,
        PROBES_T32_MOV,
        PROBES_T32_ADDSUB,
        PROBES_T32_LOGICAL,
        PROBES_T32_ADDWSUBW_PC,
        PROBES_T32_ADDWSUBW,
        PROBES_T32_MOVW,
        PROBES_T32_SAT,
        PROBES_T32_BITFIELD,
        PROBES_T32_SEV,
        PROBES_T32_WFE,
        PROBES_T32_MRS,
        PROBES_T32_BRANCH_COND,
        PROBES_T32_BRANCH,
        PROBES_T32_PLDI,
        PROBES_T32_LDR_LIT,
        PROBES_T32_LDRSTR,
        PROBES_T32_SIGN_EXTEND,
        PROBES_T32_MEDIA,
        PROBES_T32_REVERSE,
        PROBES_T32_MUL_ADD,
        PROBES_T32_MUL_ADD2,
        PROBES_T32_MUL_ADD_LONG,
        NUM_PROBES_T32_ACTIONS
};

enum probes_t16_action {
        PROBES_T16_ADD_SP,
        PROBES_T16_CBZ,
        PROBES_T16_SIGN_EXTEND,
        PROBES_T16_PUSH,
        PROBES_T16_POP,
        PROBES_T16_SEV,
        PROBES_T16_WFE,
        PROBES_T16_IT,
        PROBES_T16_CMP,
        PROBES_T16_ADDSUB,
        PROBES_T16_LOGICAL,
        PROBES_T16_BLX,
        PROBES_T16_HIREGOPS,
        PROBES_T16_LDR_LIT,
        PROBES_T16_LDRHSTRH,
        PROBES_T16_LDRSTR,
        PROBES_T16_ADR,
        PROBES_T16_LDMSTM,
        PROBES_T16_BRANCH_COND,
        PROBES_T16_BRANCH,
        NUM_PROBES_T16_ACTIONS
};

extern const union decode_item probes_decode_thumb32_table[];
extern const union decode_item probes_decode_thumb16_table[];

enum probes_insn __kprobes
thumb16_probes_decode_insn(probes_opcode_t insn, struct arch_probes_insn *asi,
                bool emulate, const union decode_action *actions,
                const struct decode_checker *checkers[]);
enum probes_insn __kprobes
thumb32_probes_decode_insn(probes_opcode_t insn, struct arch_probes_insn *asi,
                bool emulate, const union decode_action *actions,
                const struct decode_checker *checkers[]);

#endif