initial import of NetBSD tree

1 files changed, 107 insertions, 0 deletions

diff --git a/sys/arch/m68k/include/db_machdep.h b/sys/arch/m68k/include/db_machdep.h
new file mode 100644
index 00000000000..aa5ea85aad8
--- /dev/null
+++ b/sys/arch/m68k/include/db_machdep.h
@@ -0,0 +1,107 @@
+/*	$NetBSD: db_machdep.h,v 1.12 1994/10/26 07:50:44 cgd Exp $	*/
+
+/* 
+ * Mach Operating System
+ * Copyright (c) 1992 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.
+ */
+
+/*
+ * Machine-dependent defines for new kernel debugger.
+ */
+#ifndef	_M68K_DB_MACHDEP_H_
+#define	_M68K_DB_MACHDEP_H_
+
+#include <vm/vm_prot.h>
+#include <vm/vm_param.h>
+#include <vm/vm_inherit.h>
+#include <vm/lock.h>
+#include <machine/psl.h>
+#include <machine/trap.h>
+
+typedef	vm_offset_t	db_addr_t;	/* address - unsigned */
+typedef	int		db_expr_t;	/* expression - signed */
+struct mc68020_saved_state {
+	int		d0;		/* data registers */
+	int		d1;
+	int		d2;
+	int		d3;
+	int		d4;
+	int		d5;
+	int		d6;
+	int		d7;
+	int		a0;		/* address registers */
+	int		a1;
+	int		a2;
+	int		a3;
+	int		a4;
+	int		a5;
+	int		a6;
+	int		sp;		/* stack pointer */
+	short		empty;
+	short		stackadj;
+	unsigned short	sr;		/* status register */
+	unsigned int	pc;		/* program counter - UNALIGNED!!! */
+	unsigned short	stkfmt	: 4;	/* rte stack frame format */
+	unsigned short	vector	: 12;	/* vector number */
+};
+typedef struct mc68020_saved_state 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	0x4e4f		/* breakpoint instruction */
+#define	BKPT_SIZE	(2)		/* size of breakpoint inst */
+#define	BKPT_SET(inst)	(BKPT_INST)
+
+#define	FIXUP_PC_AFTER_BREAK	ddb_regs.pc -= 2;
+
+#define SR_T1 0x8000
+#define	db_clear_single_step(regs)	((regs)->sr &= ~SR_T1)
+#define	db_set_single_step(regs)	((regs)->sr |=  SR_T1)
+
+#define	IS_BREAKPOINT_TRAP(type, code)	((type) == T_BREAKPOINT)
+#ifdef T_WATCHPOINT
+#define	IS_WATCHPOINT_TRAP(type, code)	((type) == T_WATCHPOINT)
+#else
+#define	IS_WATCHPOINT_TRAP(type, code)	0
+#endif
+
+#define	M_RTS		0xffff0000
+#define I_RTS		0x4e750000
+#define M_JSR		0xffc00000
+#define I_JSR		0x4e800000
+#define M_BSR		0xff000000
+#define I_BSR		0x61000000
+#define	M_RTE		0xffff0000
+#define	I_RTE		0x4e730000
+
+#define	inst_trap_return(ins)	(((ins)&M_RTE) == I_RTE)
+#define	inst_return(ins)	(((ins)&M_RTS) == I_RTS)
+#define	inst_call(ins)		(((ins)&M_JSR) == I_JSR || \
+				 ((ins)&M_BSR) == I_BSR)
+#define inst_load(ins)		0
+#define inst_store(ins)		0
+
+#endif	/* _M68K_DB_MACHDEP_H_ */