initial import of NetBSD tree

1 files changed, 73 insertions, 0 deletions

diff --git a/sys/arch/vax/include/db_machdep.h b/sys/arch/vax/include/db_machdep.h
new file mode 100644
index 00000000000..b2a9fd68642
--- /dev/null
+++ b/sys/arch/vax/include/db_machdep.h
@@ -0,0 +1,73 @@
+/*	$NetBSD: db_machdep.h,v 1.1 1995/06/16 15:17:27 ragge Exp $	*/
+
+/* 
+ * 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 "AS IS"
+ * 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 Mellon
+ * the rights to redistribute these changes.
+ */
+
+#ifndef	_VAX_DB_MACHDEP_H_
+#define	_VAX_DB_MACHDEP_H_
+
+/*
+ * Machine-dependent defines for new kernel debugger.
+ * Modified for vax out of i386 code.
+ */
+
+#include <sys/param.h>
+#include <vm/vm.h>
+#include <machine/trap.h>
+
+typedef	vm_offset_t	db_addr_t;	/* address - unsigned */
+typedef	int		db_expr_t;	/* expression - signed */
+
+typedef struct trapframe db_regs_t;
+db_regs_t	ddb_regs;	/* register state */
+#define	DDB_REGS	(&ddb_regs)
+
+#define	PC_REGS(regs)	((db_addr_t)(regs)->pc)
+
+#define	BKPT_INST	0x03		/* breakpoint instruction */
+#define	BKPT_SIZE	(1)		/* size of breakpoint inst */
+#define	BKPT_SET(inst)	(BKPT_INST)
+
+#define	FIXUP_PC_AFTER_BREAK		ddb_regs.pc -= BKPT_SIZE;
+
+#define	db_clear_single_step(regs)	((regs)->psl &= ~PSL_T)
+#define	db_set_single_step(regs)	((regs)->psl |=  PSL_T)
+
+#define	IS_BREAKPOINT_TRAP(type, code)	((type) == T_BPTFLT)
+#define IS_WATCHPOINT_TRAP(type, code)	((type) == T_TRCTRAP)
+
+#define	I_CALL		0xfb
+#define	I_RET		0x04
+#define	I_IRET		0x02
+
+#define	inst_trap_return(ins)	(((ins)&0xff) == I_IRET)
+#define	inst_return(ins)	(((ins)&0xff) == I_RET)
+#define	inst_call(ins)		(((ins)&0xff) == I_CALL)
+
+#define inst_load(ins)		0
+#define inst_store(ins)		0
+
+#endif	/* _VAX_DB_MACHDEP_H_ */