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db_machdep.h revision 1.1 
      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 "AS IS"
     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 (at) 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 Mellon
     24  * the rights to redistribute these changes.
     25  *
     26  *	$Id: db_machdep.h,v 1.1 1994/03/24 08:46:45 pk Exp $
     27  */
     28 
     29 #ifndef	_SPARC_DB_MACHDEP_H_
     30 #define	_SPARC_DB_MACHDEP_H_
     31 
     32 /*
     33  * Machine-dependent defines for new kernel debugger.
     34  */
     35 
     36 
     37 #include <vm/vm_prot.h>
     38 #include <vm/vm_param.h>
     39 #include <vm/vm_inherit.h>
     40 #include <vm/lock.h>
     41 #include <machine/frame.h>
     42 #include <machine/psl.h>
     43 #include <machine/trap.h>
     44 #include <machine/reg.h>
     45 
     46 #define sparc_saved_state trapframe
     47 /* end of mangling */
     48 
     49 typedef	vm_offset_t	db_addr_t;	/* address - unsigned */
     50 typedef	int		db_expr_t;	/* expression - signed */
     51 
     52 typedef struct sparc_saved_state db_regs_t;
     53 db_regs_t	ddb_regs;	/* register state */
     54 #define	DDB_REGS	(&ddb_regs)
     55 
     56 #define	PC_REGS(regs)	((db_addr_t)(regs)->tf_pc)
     57 
     58 #define	BKPT_INST	0x91d02001	/* breakpoint instruction */
     59 #define	BKPT_SIZE	(4)		/* size of breakpoint inst */
     60 #define	BKPT_SET(inst)	(BKPT_INST)
     61 
     62 #define	db_clear_single_step(regs)	(0)
     63 #define	db_set_single_step(regs)	(0)
     64 
     65 #define	IS_BREAKPOINT_TRAP(type, code)	((type) == T_BREAKPOINT)
     66 #define IS_WATCHPOINT_TRAP(type, code)	(0)
     67 
     68 #define	inst_trap_return(ins)	((ins)&0)
     69 #define	inst_return(ins)	((ins)&0)
     70 #define	inst_call(ins)		((ins)&0)
     71 #define inst_load(ins)		0
     72 #define inst_store(ins)		0
     73 
     74 #define DB_MACHINE_COMMANDS
     75 
     76 #endif	/* _SPARC_DB_MACHDEP_H_ */
     77