/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
 * Copyright (C) 2016 Imagination Technologies
 * Author: Marcin Nowakowski <marcin.nowakowski@mips.com>
 */

#ifndef __PROBES_COMMON_H
#define __PROBES_COMMON_H

#include <asm/inst.h>

int __insn_is_compact_branch(union mips_instruction insn);

static inline int __insn_has_delay_slot(const union mips_instruction insn)
{
        switch (insn.i_format.opcode) {
        /*
         * jr and jalr are in r_format format.
         */
        case spec_op:
                switch (insn.r_format.func) {
                case jalr_op:
                case jr_op:
                        return 1;
                }
                break;

        /*
         * This group contains:
         * bltz_op, bgez_op, bltzl_op, bgezl_op,
         * bltzal_op, bgezal_op, bltzall_op, bgezall_op.
         */
        case bcond_op:
                switch (insn.i_format.rt) {
                case bltz_op:
                case bltzl_op:
                case bgez_op:
                case bgezl_op:
                case bltzal_op:
                case bltzall_op:
                case bgezal_op:
                case bgezall_op:
                case bposge32_op:
                        return 1;
                }
                break;

        /*
         * These are unconditional and in j_format.
         */
        case jal_op:
        case j_op:
        case beq_op:
        case beql_op:
        case bne_op:
        case bnel_op:
        case blez_op: /* not really i_format */
        case blezl_op:
        case bgtz_op:
        case bgtzl_op:
                return 1;

        /*
         * And now the FPA/cp1 branch instructions.
         */
        case cop1_op:
#ifdef CONFIG_CPU_CAVIUM_OCTEON
        case lwc2_op: /* This is bbit0 on Octeon */
        case ldc2_op: /* This is bbit032 on Octeon */
        case swc2_op: /* This is bbit1 on Octeon */
        case sdc2_op: /* This is bbit132 on Octeon */
#endif
                return 1;
        }

        return 0;
}

#endif  /* __PROBES_COMMON_H */