[unix-history] / sys / i386 / include / db_machdep.h

/* 
 * 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.
 *
 *	$Id$
 */

#ifndef	_I386_DB_MACHDEP_H_
#define	_I386_DB_MACHDEP_H_

/*
 * Machine-dependent defines for new kernel debugger.
 */


/* #include <mach/i386/vm_types.h> */
/* #include <mach/i386/vm_param.h> */
#include <vm/vm_prot.h>
#include <vm/vm_param.h>
#include <vm/vm_inherit.h>
#include <vm/lock.h>
/* #include <i386/thread.h> */		/* for thread_status */
#include <machine/frame.h>	/* for struct trapframe */
/* #include <i386/eflags.h> */
#include <machine/eflags.h>		/* from Mach... */
/* #include <i386/trap.h> */
#include <machine/trap.h>

#define i386_saved_state trapframe
/* end of mangling */

typedef	vm_offset_t	db_addr_t;	/* address - unsigned */
typedef	int		db_expr_t;	/* expression - signed */

typedef struct i386_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)->tf_eip)

#define	BKPT_INST	0xcc		/* breakpoint instruction */
#define	BKPT_SIZE	(1)		/* size of breakpoint inst */
#define	BKPT_SET(inst)	(BKPT_INST)

#define	FIXUP_PC_AFTER_BREAK	ddb_regs.tf_eip -= 1;

#define	db_clear_single_step(regs)	((regs)->tf_eflags &= ~EFL_TF)
#define	db_set_single_step(regs)	((regs)->tf_eflags |=  EFL_TF)

/* #define	IS_BREAKPOINT_TRAP(type, code)	((type) == T_INT3) */
/* #define IS_WATCHPOINT_TRAP(type, code)	((type) == T_WATCHPOINT) */
/* using the 386bsd values, rather than the Mach ones: */
#define	IS_BREAKPOINT_TRAP(type, code)	((type) == T_BPTFLT)
#define IS_WATCHPOINT_TRAP(type, code)	((type) == T_KDBTRAP)

#define	I_CALL		0xe8
#define	I_CALLI		0xff
#define	I_RET		0xc3
#define	I_IRET		0xcf

#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 || \
				 (((ins)&0xff) == I_CALLI && \
				  ((ins)&0x3800) == 0x1000))
#define inst_load(ins)		0
#define inst_store(ins)		0

/* access capability and access macros */

#define DB_ACCESS_LEVEL		2	/* access any space */
#define DB_CHECK_ACCESS(addr,size,task)				\
	db_check_access(addr,size,task)
#define DB_PHYS_EQ(task1,addr1,task2,addr2)			\
	db_phys_eq(task1,addr1,task2,addr2)
#define DB_VALID_KERN_ADDR(addr)				\
	((addr) >= VM_MIN_KERNEL_ADDRESS && 			\
	 (addr) < VM_MAX_KERNEL_ADDRESS)
#define DB_VALID_ADDRESS(addr,user)				\
	((!(user) && DB_VALID_KERN_ADDR(addr)) ||		\
	 ((user) && (addr) < VM_MIN_KERNEL_ADDRESS))

boolean_t 	db_check_access(/* vm_offset_t, int, task_t */);
boolean_t	db_phys_eq(/* task_t, vm_offset_t, task_t, vm_offset_t */);

/* macros for printing OS server dependent task name */

#define DB_TASK_NAME(task)	db_task_name(task)
#define DB_TASK_NAME_TITLE	"COMMAND                "
#define DB_TASK_NAME_LEN	23
#define DB_NULL_TASK_NAME	"?                      "

void		db_task_name(/* task_t */);

/* macro for checking if a thread has used floating-point */

#define db_thread_fp_used(thread)	((thread)->pcb->ims.ifps != 0)

#endif	/* _I386_DB_MACHDEP_H_ */
Commit	Line	Data
15637ed4 RG	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@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.
15637ed4	25	*
78ed81a3	26	* $Id$
15637ed4 RG	27	*/
	28
	29	#ifndef _I386_DB_MACHDEP_H_
	30	#define _I386_DB_MACHDEP_H_
	31
	32	/*
	33	* Machine-dependent defines for new kernel debugger.
	34	*/
	35
	36
	37	/* #include <mach/i386/vm_types.h> */
	38	/* #include <mach/i386/vm_param.h> */
	39	#include <vm/vm_prot.h>
	40	#include <vm/vm_param.h>
	41	#include <vm/vm_inherit.h>
	42	#include <vm/lock.h>
	43	/* #include <i386/thread.h> / / for thread_status */
	44	#include <machine/frame.h> /* for struct trapframe */
	45	/* #include <i386/eflags.h> */
	46	#include <machine/eflags.h> /* from Mach... */
	47	/* #include <i386/trap.h> */
	48	#include <machine/trap.h>
	49
	50	#define i386_saved_state trapframe
	51	/* end of mangling */
	52
	53	typedef vm_offset_t db_addr_t; /* address - unsigned */
	54	typedef int db_expr_t; /* expression - signed */
	55
	56	typedef struct i386_saved_state db_regs_t;
	57	db_regs_t ddb_regs; /* register state */
	58	#define DDB_REGS (&ddb_regs)
	59
	60	#define PC_REGS(regs) ((db_addr_t)(regs)->tf_eip)
	61
	62	#define BKPT_INST 0xcc /* breakpoint instruction */
	63	#define BKPT_SIZE (1) /* size of breakpoint inst */
	64	#define BKPT_SET(inst) (BKPT_INST)
	65
	66	#define FIXUP_PC_AFTER_BREAK ddb_regs.tf_eip -= 1;
	67
	68	#define db_clear_single_step(regs) ((regs)->tf_eflags &= ~EFL_TF)
	69	#define db_set_single_step(regs) ((regs)->tf_eflags \|= EFL_TF)
	70
	71	/* #define IS_BREAKPOINT_TRAP(type, code) ((type) == T_INT3) */
	72	/* #define IS_WATCHPOINT_TRAP(type, code) ((type) == T_WATCHPOINT) */
	73	/* using the 386bsd values, rather than the Mach ones: */
	74	#define IS_BREAKPOINT_TRAP(type, code) ((type) == T_BPTFLT)
	75	#define IS_WATCHPOINT_TRAP(type, code) ((type) == T_KDBTRAP)
	76
	77	#define I_CALL 0xe8
	78	#define I_CALLI 0xff
	79	#define I_RET 0xc3
	80	#define I_IRET 0xcf
	81
	82	#define inst_trap_return(ins) (((ins)&0xff) == I_IRET)
	83	#define inst_return(ins) (((ins)&0xff) == I_RET)
	84	#define inst_call(ins) (((ins)&0xff) == I_CALL \|\| \
	85	(((ins)&0xff) == I_CALLI && \
	86	((ins)&0x3800) == 0x1000))
	87	#define inst_load(ins) 0
	88	#define inst_store(ins) 0
	89
	90	/* access capability and access macros */
91
92	#define DB_ACCESS_LEVEL 2 /* access any space */
93	#define DB_CHECK_ACCESS(addr,size,task) \
94	db_check_access(addr,size,task)
95	#define DB_PHYS_EQ(task1,addr1,task2,addr2) \
96	db_phys_eq(task1,addr1,task2,addr2)
97	#define DB_VALID_KERN_ADDR(addr) \
98	((addr) >= VM_MIN_KERNEL_ADDRESS && \
99	(addr) < VM_MAX_KERNEL_ADDRESS)
100	#define DB_VALID_ADDRESS(addr,user) \
101	((!(user) && DB_VALID_KERN_ADDR(addr)) \|\| \
102	((user) && (addr) < VM_MIN_KERNEL_ADDRESS))
103
104	boolean_t db_check_access(/* vm_offset_t, int, task_t */);
105	boolean_t db_phys_eq(/* task_t, vm_offset_t, task_t, vm_offset_t */);
106
107	/* macros for printing OS server dependent task name */
108
109	#define DB_TASK_NAME(task) db_task_name(task)
110	#define DB_TASK_NAME_TITLE "COMMAND "
111	#define DB_TASK_NAME_LEN 23
112	#define DB_NULL_TASK_NAME "? "
113
114	void db_task_name(/* task_t */);
115
116	/* macro for checking if a thread has used floating-point */
117
118	#define db_thread_fp_used(thread) ((thread)->pcb->ims.ifps != 0)
119
120	#endif /* _I386_DB_MACHDEP_H_ */