1 files changed, 67 insertions, 0 deletions
diff --git a/sys/ddb/db_break.h b/sys/ddb/db_break.h
new file mode 100644
index 0000000..f30b933
--- /dev/null
+++ b/sys/ddb/db_break.h
@@ -0,0 +1,67 @@
+/*-
+ * Mach Operating System
+ * Copyright (c) 1991,1990 Carnegie Mellon University
+ * All Rights Reserved.
+ *
+ * Permission to use, copy, modify and distribute this software and its
+ * documentation is hereby granted, provided that both the copyright
+ * notice and this permission notice appear in all copies of the
+ * software, derivative works or modified versions, and any portions
+ * thereof, and that both notices appear in supporting documentation.
+ *
+ * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS
+ * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
+ * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
+ *
+ * Carnegie Mellon requests users of this software to return to
+ *
+ *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
+ *  School of Computer Science
+ *  Carnegie Mellon University
+ *  Pittsburgh PA 15213-3890
+ *
+ * any improvements or extensions that they make and grant Carnegie the
+ * rights to redistribute these changes.
+ *
+ * $FreeBSD$
+ */
+
+/*
+ *	Author: David B. Golub, Carnegie Mellon University
+ *	Date:	7/90
+ */
+#ifndef _DDB_DB_BREAK_H_
+#define	_DDB_DB_BREAK_H_
+
+/*
+ * Breakpoint.
+ */
+
+#ifndef BKPT_INST_TYPE
+#define BKPT_INST_TYPE int
+#endif
+
+struct db_breakpoint {
+	vm_map_t map;			/* in this map */
+	db_addr_t address;		/* set here */
+	int	init_count;		/* number of times to skip bkpt */
+	int	count;			/* current count */
+	int	flags;			/* flags: */
+#define	BKPT_SINGLE_STEP	0x2	    /* to simulate single step */
+#define	BKPT_TEMP		0x4	    /* temporary */
+	BKPT_INST_TYPE bkpt_inst;	/* saved instruction at bkpt */
+	struct db_breakpoint *link;	/* link in in-use or free chain */
+};
+typedef struct db_breakpoint *db_breakpoint_t;
+
+void		db_clear_breakpoints(void);
+#ifdef SOFTWARE_SSTEP
+void		db_delete_temp_breakpoint(db_breakpoint_t);
+#endif
+db_breakpoint_t	db_find_breakpoint_here(db_addr_t addr);
+void		db_set_breakpoints(void);
+#ifdef SOFTWARE_SSTEP
+db_breakpoint_t	db_set_temp_breakpoint(db_addr_t);
+#endif
+
+#endif /* !_DDB_DB_BREAK_H_ */