1 /*-
2  * SPDX-License-Identifier: MIT-CMU
23  *  Pittsburgh PA 15213-3890
62 static void		db_delete_watchpoint(vm_map_t map, db_addr_t addr);
64 static bool		db_find_watchpoint(vm_map_t map, db_addr_t addr,
68 static void		db_set_watchpoint(vm_map_t map, db_addr_t addr,
77 	    db_free_watchpoints = watch->link;  in db_watchpoint_alloc()
93 	watch->link = db_free_watchpoints;  in db_watchpoint_free()
98 db_set_watchpoint(vm_map_t map, db_addr_t addr, vm_size_t size)  in db_set_watchpoint()  argument
102 	if (map == NULL) {  in db_set_watchpoint()
103 	    db_printf("No map.\n");  in db_set_watchpoint()
113 	     watch = watch->link)  in db_set_watchpoint()
114 	    if (db_map_equal(watch->map, map) &&  in db_set_watchpoint()
115 		(watch->loaddr == addr) &&  in db_set_watchpoint()
116 		(watch->hiaddr == addr+size)) {  in db_set_watchpoint()
127 	watch->map = map;  in db_set_watchpoint()
128 	watch->loaddr = addr;  in db_set_watchpoint()
129 	watch->hiaddr = addr+size;  in db_set_watchpoint()
131 	watch->link = db_watchpoint_list;  in db_set_watchpoint()
138 db_delete_watchpoint(vm_map_t map, db_addr_t addr)  in db_delete_watchpoint()  argument
145 	     prev = &watch->link)  in db_delete_watchpoint()
146 	    if (db_map_equal(watch->map, map) &&  in db_delete_watchpoint()
147 		(watch->loaddr <= addr) &&  in db_delete_watchpoint()
148 		(addr < watch->hiaddr)) {  in db_delete_watchpoint()
149 		*prev = watch->link;  in db_delete_watchpoint()
163 	    db_printf("No watchpoints set\n");  in db_list_watchpoints()
168 	db_printf(" Map                Address          Size\n");  in db_list_watchpoints()
170 	db_printf(" Map        Address  Size\n");  in db_list_watchpoints()
174 	     watch = watch->link)  in db_list_watchpoints()
180 		      db_map_current(watch->map) ? "*" : " ",  in db_list_watchpoints()
181 		      (void *)watch->map, (long)watch->loaddr,  in db_list_watchpoints()
182 		      (long)watch->hiaddr - (long)watch->loaddr);  in db_list_watchpoints()
213  * At least one non-optional show-command must be implemented using
230 	         watch = watch->link)  in db_set_watchpoints()
231 		pmap_protect(watch->map->pmap,  in db_set_watchpoints()
232 			     trunc_page(watch->loaddr),  in db_set_watchpoints()
233 			     round_page(watch->hiaddr),  in db_set_watchpoints()
248 db_find_watchpoint(vm_map_t map, db_addr_t addr, db_regs_t regs)  in db_find_watchpoint()  argument
255 	     watch = watch->link)  in db_find_watchpoint()
256 	    if (db_map_equal(watch->map, map)) {  in db_find_watchpoint()
257 		if ((watch->loaddr <= addr) &&  in db_find_watchpoint()
258 		    (addr < watch->hiaddr))  in db_find_watchpoint()
260 		else if ((trunc_page(watch->loaddr) <= addr) &&  in db_find_watchpoint()
261 			 (addr < round_page(watch->hiaddr)))  in db_find_watchpoint()
267 	 *	in a protected region.  We want to single-step  in db_find_watchpoint()
268 	 *	and then re-protect.  in db_find_watchpoint()
324 		db_printf("No hardware watchpoints available.\n");  in db_hwatchpoint_cmd()