FreeBSD/Linux Kernel Cross Reference
sys/arm64/include/debug_monitor.h

     /*-
      * Copyright (c) 2014 The FreeBSD Foundation
      * All rights reserved.
      *
      * This software was developed by Semihalf under
      * the sponsorship of the FreeBSD Foundation.
      *
      * Redistribution and use in source and binary forms, with or without
      * modification, are permitted provided that the following conditions
     * are met:
     * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     *
     * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
     * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     * SUCH DAMAGE.
     *
     * $FreeBSD: releng/11.2/sys/arm64/include/debug_monitor.h 305773 2016-09-13 16:22:50Z andrew $
     */
    
    #ifndef _MACHINE_DEBUG_MONITOR_H_
    #define _MACHINE_DEBUG_MONITOR_H_
    
    #ifdef DDB
    
    #include <machine/db_machdep.h>
    
    enum dbg_el_t {
            DBG_FROM_EL0 = 0,
            DBG_FROM_EL1 = 1,
    };
    
    enum dbg_access_t {
            HW_BREAKPOINT_X         = 0,
            HW_BREAKPOINT_R         = 1,
            HW_BREAKPOINT_W         = 2,
            HW_BREAKPOINT_RW        = HW_BREAKPOINT_R | HW_BREAKPOINT_W,
    };
    
    void dbg_monitor_init(void);
    void dbg_show_watchpoint(void);
    int dbg_setup_watchpoint(db_expr_t addr, db_expr_t size, enum dbg_el_t el,
        enum dbg_access_t access);
    int dbg_remove_watchpoint(db_expr_t addr, db_expr_t size, enum dbg_el_t el);
    #else
    static __inline void
    dbg_monitor_init(void)
    {
    }
    #endif
    
    #endif /* _MACHINE_DEBUG_MONITOR_H_ */

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