The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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

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    1 /*-
    2  * Copyright (c) 2014 The FreeBSD Foundation
    3  * All rights reserved.
    4  *
    5  * This software was developed by Semihalf under
    6  * the sponsorship of the FreeBSD Foundation.
    7  *
    8  * Redistribution and use in source and binary forms, with or without
    9  * modification, are permitted provided that the following conditions
   10  * are met:
   11  * 1. Redistributions of source code must retain the above copyright
   12  *    notice, this list of conditions and the following disclaimer.
   13  * 2. Redistributions in binary form must reproduce the above copyright
   14  *    notice, this list of conditions and the following disclaimer in the
   15  *    documentation and/or other materials provided with the distribution.
   16  *
   17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   20  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   27  * SUCH DAMAGE.
   28  *
   29  * $FreeBSD: releng/11.0/sys/arm/include/debug_monitor.h 300969 2016-05-29 17:35:38Z zbb $
   30  */
   31 
   32 #ifndef _MACHINE_DEBUG_MONITOR_H_
   33 #define _MACHINE_DEBUG_MONITOR_H_
   34 
   35 #ifdef DDB
   36 
   37 #include <machine/db_machdep.h>
   38 
   39 enum dbg_access_t {
   40         HW_BREAKPOINT_X         = 0,
   41         HW_WATCHPOINT_R         = 1,
   42         HW_WATCHPOINT_W         = 2,
   43         HW_WATCHPOINT_RW        = HW_WATCHPOINT_R | HW_WATCHPOINT_W,
   44 };
   45 
   46 #if __ARM_ARCH >= 6
   47 void dbg_monitor_init(void);
   48 void dbg_monitor_init_secondary(void);
   49 void dbg_show_watchpoint(void);
   50 int dbg_setup_watchpoint(db_expr_t, db_expr_t, enum dbg_access_t);
   51 int dbg_remove_watchpoint(db_expr_t, db_expr_t);
   52 void dbg_resume_dbreg(void);
   53 #else /* __ARM_ARCH >= 6 */
   54 static __inline void
   55 dbg_show_watchpoint(void)
   56 {
   57 }
   58 static __inline int
   59 dbg_setup_watchpoint(db_expr_t addr __unused, db_expr_t size __unused,
   60     enum dbg_access_t access __unused)
   61 {
   62         return (ENXIO);
   63 }
   64 static __inline int
   65 dbg_remove_watchpoint(db_expr_t addr __unused, db_expr_t size __unused)
   66 {
   67         return (ENXIO);
   68 }
   69 static __inline void
   70 dbg_monitor_init(void)
   71 {
   72 }
   73 static __inline void
   74 dbg_monitor_init_secondary(void)
   75 {
   76 }
   77 static __inline void
   78 dbg_resume_dbreg(void)
   79 {
   80 }
   81 #endif /* __ARM_ARCH < 6 */
   82 
   83 #else /* DDB */
   84 static __inline void
   85 dbg_monitor_init(void)
   86 {
   87 }
   88 #endif
   89 
   90 #endif /* _MACHINE_DEBUG_MONITOR_H_ */

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