1 /* 2 * Mach Operating System 3 * Copyright (c) 1991,1990 Carnegie Mellon University 4 * All Rights Reserved. 5 * 6 * Permission to use, copy, modify and distribute this software and its 7 * documentation is hereby granted, provided that both the copyright 8 * notice and this permission notice appear in all copies of the 9 * software, derivative works or modified versions, and any portions 10 * thereof, and that both notices appear in supporting documentation. 11 * 12 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS 13 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR 14 * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 15 * 16 * Carnegie Mellon requests users of this software to return to 17 * 18 * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU 19 * School of Computer Science 20 * Carnegie Mellon University 21 * Pittsburgh PA 15213-3890 22 * 23 * any improvements or extensions that they make and grant Carnegie the 24 * rights to redistribute these changes. 25 * 26 * $FreeBSD: src/sys/ddb/db_break.h,v 1.12 1999/08/28 00:41:06 peter Exp $ 27 * $DragonFly: src/sys/ddb/db_break.h,v 1.4 2006/05/20 02:42:01 dillon Exp $ 28 */ 29 30 /* 31 * Author: David B. Golub, Carnegie Mellon University 32 * Date: 7/90 33 */ 34 35 #ifndef _DDB_DB_BREAK_H_ 36 #define _DDB_DB_BREAK_H_ 37 38 #ifndef _DDB_DDB_H_ 39 #include <ddb/ddb.h> 40 #endif 41 #ifndef _VM_VM_MAP_H_ 42 #include <vm/vm_map.h> 43 #endif 44 45 /* 46 * Breakpoint. 47 */ 48 49 struct db_breakpoint { 50 struct vm_map *map; /* in this map */ 51 db_addr_t address; /* set here */ 52 int init_count; /* number of times to skip bkpt */ 53 int count; /* current count */ 54 int flags; /* flags: */ 55 #define BKPT_SINGLE_STEP 0x2 /* to simulate single step */ 56 #define BKPT_TEMP 0x4 /* temporary */ 57 int bkpt_inst; /* saved instruction at bkpt */ 58 struct db_breakpoint *link; /* link in in-use or free chain */ 59 }; 60 typedef struct db_breakpoint *db_breakpoint_t; 61 62 #ifdef _KERNEL 63 64 void db_clear_breakpoints (void); 65 #ifdef SOFTWARE_SSTEP 66 void db_delete_temp_breakpoint (db_breakpoint_t); 67 #endif 68 db_breakpoint_t db_find_breakpoint_here (db_addr_t addr); 69 void db_set_breakpoints (void); 70 #ifdef SOFTWARE_SSTEP 71 db_breakpoint_t db_set_temp_breakpoint (db_addr_t); 72 #endif 73 74 #endif 75 76 #endif /* !_DDB_DB_BREAK_H_ */ 77