1 /*- 2 * Copyright (c) 2014 The FreeBSD Foundation 3 * 4 * This software was developed by Semihalf under 5 * the sponsorship of the FreeBSD Foundation. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #ifndef _MACHINE_DEBUG_MONITOR_H_ 30 #define _MACHINE_DEBUG_MONITOR_H_ 31 32 #define DBG_BRP_MAX 16 33 #define DBG_WRP_MAX 16 34 35 struct debug_monitor_state { 36 uint32_t dbg_enable_count; 37 uint32_t dbg_flags; 38 #define DBGMON_ENABLED (1 << 0) 39 #define DBGMON_KERNEL (1 << 1) 40 uint64_t dbg_bcr[DBG_BRP_MAX]; 41 uint64_t dbg_bvr[DBG_BRP_MAX]; 42 uint64_t dbg_wcr[DBG_WRP_MAX]; 43 uint64_t dbg_wvr[DBG_WRP_MAX]; 44 }; 45 46 #ifdef _KERNEL 47 48 enum dbg_access_t { 49 HW_BREAKPOINT_X = 0, 50 HW_BREAKPOINT_R = 1, 51 HW_BREAKPOINT_W = 2, 52 HW_BREAKPOINT_RW = HW_BREAKPOINT_R | HW_BREAKPOINT_W, 53 }; 54 55 void dbg_monitor_init(void); 56 void dbg_register_sync(struct debug_monitor_state *); 57 58 #ifdef DDB 59 void dbg_show_watchpoint(void); 60 #endif 61 62 #endif /* _KERNEL */ 63 64 #endif /* _MACHINE_DEBUG_MONITOR_H_ */ 65