mirror of
https://github.com/freebsd/freebsd-src
synced 2024-07-21 18:27:22 +00:00
f242c47ee2
As with watchpoints allow the kernel debugger to set hardware breakpoints on arm64. These have been tested to work in both the ddb and gdb backends. Reviewed by: jhb (earlier version) Sponsored by: Arm Ltd Sponsored by: Innovate UK Differential Revision: https://reviews.freebsd.org/D44355
66 lines
2.2 KiB
C
66 lines
2.2 KiB
C
/*-
|
|
* Copyright (c) 2014 The FreeBSD Foundation
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
#ifndef _MACHINE_DEBUG_MONITOR_H_
|
|
#define _MACHINE_DEBUG_MONITOR_H_
|
|
|
|
#define DBG_BRP_MAX 16
|
|
#define DBG_WRP_MAX 16
|
|
|
|
struct debug_monitor_state {
|
|
uint32_t dbg_enable_count;
|
|
uint32_t dbg_flags;
|
|
#define DBGMON_ENABLED (1 << 0)
|
|
#define DBGMON_KERNEL (1 << 1)
|
|
uint64_t dbg_bcr[DBG_BRP_MAX];
|
|
uint64_t dbg_bvr[DBG_BRP_MAX];
|
|
uint64_t dbg_wcr[DBG_WRP_MAX];
|
|
uint64_t dbg_wvr[DBG_WRP_MAX];
|
|
};
|
|
|
|
#ifdef _KERNEL
|
|
|
|
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_register_sync(struct debug_monitor_state *);
|
|
|
|
#ifdef DDB
|
|
void dbg_show_breakpoint(void);
|
|
void dbg_show_watchpoint(void);
|
|
#endif
|
|
|
|
#endif /* _KERNEL */
|
|
|
|
#endif /* _MACHINE_DEBUG_MONITOR_H_ */
|