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 * $FreeBSD$ 30 */ 31 32 #ifndef _MACHINE_DEBUG_MONITOR_H_ 33 #define _MACHINE_DEBUG_MONITOR_H_ 34 35 #define DBG_BRP_MAX 16 36 #define DBG_WRP_MAX 16 37 38 struct debug_monitor_state { 39 uint32_t dbg_enable_count; 40 uint32_t dbg_flags; 41 #define DBGMON_ENABLED (1 << 0) 42 #define DBGMON_KERNEL (1 << 1) 43 uint64_t dbg_bcr[DBG_BRP_MAX]; 44 uint64_t dbg_bvr[DBG_BRP_MAX]; 45 uint64_t dbg_wcr[DBG_WRP_MAX]; 46 uint64_t dbg_wvr[DBG_WRP_MAX]; 47 }; 48 49 #ifdef _KERNEL 50 51 enum dbg_access_t { 52 HW_BREAKPOINT_X = 0, 53 HW_BREAKPOINT_R = 1, 54 HW_BREAKPOINT_W = 2, 55 HW_BREAKPOINT_RW = HW_BREAKPOINT_R | HW_BREAKPOINT_W, 56 }; 57 58 void dbg_monitor_init(void); 59 void dbg_register_sync(struct debug_monitor_state *); 60 int dbg_setup_watchpoint(struct debug_monitor_state *, vm_offset_t, vm_size_t, 61 enum dbg_access_t); 62 int dbg_remove_watchpoint(struct debug_monitor_state *, vm_offset_t, vm_size_t); 63 64 #ifdef DDB 65 void dbg_show_watchpoint(void); 66 #endif 67 68 #endif /* _KERNEL */ 69 70 #endif /* _MACHINE_DEBUG_MONITOR_H_ */ 71