mirror of
https://git.hardenedbsd.org/hardenedbsd/HardenedBSD.git
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01ed3219b9
- Reset debug architecture and enable monitor for secondary CPUs in init_secondary() rather than when configuring watchpoint, etc. - Disable HW debugging capabilities when one of the CPU cores fails to set up. - Use dbg_capable() in a more atomic manner to avoid any mismatch between CPUs. Differential Revision: https://reviews.freebsd.org/D6009
91 lines
2.6 KiB
C
91 lines
2.6 KiB
C
/*-
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* Copyright (c) 2014 The FreeBSD Foundation
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* All rights reserved.
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*
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* This software was developed by Semihalf under
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* the sponsorship of the FreeBSD Foundation.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _MACHINE_DEBUG_MONITOR_H_
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#define _MACHINE_DEBUG_MONITOR_H_
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#ifdef DDB
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#include <machine/db_machdep.h>
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enum dbg_access_t {
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HW_BREAKPOINT_X = 0,
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HW_WATCHPOINT_R = 1,
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HW_WATCHPOINT_W = 2,
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HW_WATCHPOINT_RW = HW_WATCHPOINT_R | HW_WATCHPOINT_W,
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};
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#if __ARM_ARCH >= 6
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void dbg_monitor_init(void);
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void dbg_monitor_init_secondary(void);
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void dbg_show_watchpoint(void);
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int dbg_setup_watchpoint(db_expr_t, db_expr_t, enum dbg_access_t);
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int dbg_remove_watchpoint(db_expr_t, db_expr_t);
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void dbg_resume_dbreg(void);
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#else /* __ARM_ARCH >= 6 */
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static __inline void
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dbg_show_watchpoint(void)
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{
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}
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static __inline int
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dbg_setup_watchpoint(db_expr_t addr __unused, db_expr_t size __unused,
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enum dbg_access_t access __unused)
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{
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return (ENXIO);
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}
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static __inline int
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dbg_remove_watchpoint(db_expr_t addr __unused, db_expr_t size __unused)
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{
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return (ENXIO);
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}
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static __inline void
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dbg_monitor_init(void)
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{
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}
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static __inline void
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dbg_monitor_init_secondary(void)
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{
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}
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static __inline void
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dbg_resume_dbreg(void)
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{
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}
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#endif /* __ARM_ARCH < 6 */
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#else /* DDB */
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static __inline void
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dbg_monitor_init(void)
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{
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}
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#endif
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#endif /* _MACHINE_DEBUG_MONITOR_H_ */
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