[apple/xnu.git] / osfmk / kdp / kdp_protocol.h

/*
 * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_LICENSE_HEADER_START@
 * 
 * The contents of this file constitute Original Code as defined in and
 * are subject to the Apple Public Source License Version 1.1 (the
 * "License").  You may not use this file except in compliance with the
 * License.  Please obtain a copy of the License at
 * http://www.apple.com/publicsource and read it before using this file.
 * 
 * This Original Code and all software distributed under the License are
 * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
 * License for the specific language governing rights and limitations
 * under the License.
 * 
 * @APPLE_LICENSE_HEADER_END@
 */

/*
 * Definition of remote debugger protocol.
 */

#include	<mach/vm_prot.h>

/*
 * Retransmit parameters
 */
#if	DDEBUG_DEBUG || DEBUG_DEBUG
#define	KDP_REXMIT_SECS		20	/* rexmit if no ack in 3 secs */
#else	/* DDEBUG_DEBUG || DEBUG_DEBUG */
#define	KDP_REXMIT_SECS		3	/* rexmit if no ack in 3 secs */
#endif	/* DDEBUG_DEBUG || DEBUG_DEBUG */
#define	KDP_REXMIT_TRIES	8	/* xmit 8 times, then give up */

/*
 * (NMI) Attention Max Wait Time
 * Remote will resume unless KDP requests is received within this
 * many seconds after an attention (nmi) packet is sent.
 */
#define	KDP_MAX_ATTN_WAIT	30	/* wait max of 30 seconds */

/*
 * Well-known UDP port, debugger side.
 * FIXME: This is what the 68K guys use, but beats me how they chose it...
 */
#define	KDP_REMOTE_PORT		41139	/* pick one and register it */

/*
 * UDP ports, KDB side. 5 port numbers are reserved for each port (request
 * and exception). This allows multiple KDBs to run on one host.
 */
#define UDP_HOST_COMM_BASE	41140
#define UDP_HOST_EXCEP_BASE	41145
#define NUM_UDP_HOST_PORTS	5

/*
 * Requests
 */
typedef enum {
	/* connection oriented requests */
	KDP_CONNECT,	KDP_DISCONNECT,

	/* obtaining client info */
	KDP_HOSTINFO,	KDP_VERSION,	KDP_MAXBYTES,
	
	/* memory access */
	KDP_READMEM,	KDP_WRITEMEM,
	
	/* register access */
	KDP_READREGS,	KDP_WRITEREGS,
	
	/* executable image info */
	KDP_LOAD,	KDP_IMAGEPATH,
	
	/* execution control */
	KDP_SUSPEND,	KDP_RESUMECPUS,
	
	/* exception and termination notification, NOT true requests */
	KDP_EXCEPTION,	KDP_TERMINATION,

	/* breakpoint control */
	KDP_BREAKPOINT_SET, KDP_BREAKPOINT_REMOVE,
	
	/* vm regions */
	KDP_REGIONS,

	/* reattach to a connected host */
	KDP_REATTACH,

	/* remote reboot request */
	KDP_HOSTREBOOT
} kdp_req_t;

/*
 * Common KDP packet header
 */
typedef struct {
	kdp_req_t	request:7;	/* request type */
	unsigned	is_reply:1;	/* 0 => request, 1 => reply */
	unsigned	seq:8;		/* sequence number within session */
	unsigned	len:16;		/* length of entire pkt including hdr */
	unsigned	key;		/* session key */
} kdp_hdr_t;

/*
 * KDP errors
 */
typedef enum {
	KDPERR_NO_ERROR = 0,
	KDPERR_ALREADY_CONNECTED,
	KDPERR_BAD_NBYTES,
	KDPERR_BADFLAVOR		/* bad flavor in w/r regs */
} kdp_error_t;

/*
 * KDP requests and reply packet formats
 */

/*
 * KDP_CONNECT
 */
typedef struct {			/* KDP_CONNECT request */
	kdp_hdr_t	hdr;
	unsigned short	req_reply_port;	/* udp port which to send replies */
	unsigned short	exc_note_port;	/* udp port which to send exc notes */
	char		greeting[0];	/* "greetings", null-terminated */
} kdp_connect_req_t;

typedef struct {			/* KDP_CONNECT reply */
	kdp_hdr_t	hdr;
	kdp_error_t	error;
} kdp_connect_reply_t;

/*
 * KDP_DISCONNECT
 */
typedef struct {			/* KDP_DISCONNECT request */
	kdp_hdr_t	hdr;
} kdp_disconnect_req_t;

typedef struct {			/* KDP_DISCONNECT reply */
	kdp_hdr_t	hdr;
} kdp_disconnect_reply_t;

/*
 * KDP_REATTACH
 */
typedef struct {
  kdp_hdr_t hdr;
  unsigned short req_reply_port; /* udp port which to send replies */
} kdp_reattach_req_t;

/*
 * KDP_HOSTINFO
 */
typedef struct {			/* KDP_HOSTINFO request */
	kdp_hdr_t	hdr;
} kdp_hostinfo_req_t;

typedef struct {
	unsigned	cpus_mask;	/* bit is 1 if cpu present */
	int		cpu_type;
	int		cpu_subtype;
} kdp_hostinfo_t;

typedef struct {			/* KDP_HOSTINFO reply */
	kdp_hdr_t	hdr;
	kdp_hostinfo_t	hostinfo;
} kdp_hostinfo_reply_t;

/*
 * KDP_VERSION
 */
typedef struct {			/* KDP_VERSION request */
	kdp_hdr_t	hdr;
} kdp_version_req_t;

#define	KDP_FEATURE_BP	0x1	/* local breakpoint support */

typedef struct {			/* KDP_REGIONS reply */
	kdp_hdr_t	hdr;
	unsigned	version;
	unsigned	feature;
	unsigned	pad0;
	unsigned	pad1;
} kdp_version_reply_t;

/*
 * KDP_REGIONS
 */
typedef struct {			/* KDP_REGIONS request */
	kdp_hdr_t	hdr;
} kdp_regions_req_t;

#define	VM_PROT_VOLATILE	((vm_prot_t) 0x08)	/* not cacheable */
#define	VM_PROT_SPARSE		((vm_prot_t) 0x10)	/* sparse addr space */

typedef struct {
	void		*address;
	unsigned	nbytes;
	vm_prot_t	protection;
} kdp_region_t;

typedef struct {			/* KDP_REGIONS reply */
	kdp_hdr_t	hdr;
	unsigned	nregions;
	kdp_region_t	regions[0];
} kdp_regions_reply_t;

/*
 * KDP_MAXBYTES
 */
typedef struct {			/* KDP_MAXBYTES request */
	kdp_hdr_t	hdr;
} kdp_maxbytes_req_t;

typedef struct {			/* KDP_MAXBYTES reply */
	kdp_hdr_t	hdr;
	unsigned	max_bytes;
} kdp_maxbytes_reply_t;

/*
 * KDP_READMEM
 */
typedef struct {			/* KDP_READMEM request */
	kdp_hdr_t	hdr;
	void		*address;
	unsigned	nbytes;
} kdp_readmem_req_t;

typedef struct {			/* KDP_READMEM reply */
	kdp_hdr_t	hdr;
	kdp_error_t	error;
	char		data[0];
} kdp_readmem_reply_t;

/*
 * KDP_WRITEMEM
 */
typedef struct {			/* KDP_WRITEMEM request */
	kdp_hdr_t	hdr;
	void		*address;
	unsigned	nbytes;
	char		data[0];
} kdp_writemem_req_t;

typedef struct {			/* KDP_WRITEMEM reply */
	kdp_hdr_t	hdr;
	kdp_error_t	error;
} kdp_writemem_reply_t;

/*
 * KDP_READREGS
 */
typedef struct {			/* KDP_READREGS request */
	kdp_hdr_t	hdr;
	unsigned	cpu;
	unsigned	flavor;
} kdp_readregs_req_t;

typedef struct {			/* KDP_READREGS reply */
	kdp_hdr_t	hdr;
	kdp_error_t	error;		/* could be KDPERR_BADFLAVOR */
	char		data[0];
} kdp_readregs_reply_t;

/*
 * KDP_WRITEREGS
 */
typedef struct {			/* KDP_WRITEREGS request */
	kdp_hdr_t	hdr;
	unsigned	cpu;
	unsigned	flavor;
	char		data[0];
} kdp_writeregs_req_t;

typedef struct {			/* KDP_WRITEREGS reply */
	kdp_hdr_t	hdr;
	kdp_error_t	error;
} kdp_writeregs_reply_t;

/*
 * KDP_LOAD
 */
typedef struct {			/* KDP_LOAD request */
	kdp_hdr_t	hdr;
	char		file_args[0];
} kdp_load_req_t;

typedef struct {			/* KDP_LOAD reply */
	kdp_hdr_t	hdr;
	kdp_error_t	error;
} kdp_load_reply_t;

/*
 * KDP_IMAGEPATH
 */
typedef struct {			/* KDP_IMAGEPATH request */
	kdp_hdr_t	hdr;
} kdp_imagepath_req_t;

typedef struct {			/* KDP_IMAGEPATH reply */
	kdp_hdr_t	hdr;
	char		path[0];
} kdp_imagepath_reply_t;

/*
 * KDP_SUSPEND
 */
typedef struct {			/* KDP_SUSPEND request */
	kdp_hdr_t	hdr;
} kdp_suspend_req_t;

typedef struct {			/* KDP_SUSPEND reply */
	kdp_hdr_t	hdr;
} kdp_suspend_reply_t;

/*
 * KDP_RESUMECPUS
 */
typedef struct {			/* KDP_RESUMECPUS request */
	kdp_hdr_t	hdr;
	unsigned	cpu_mask;
} kdp_resumecpus_req_t;

typedef struct {			/* KDP_RESUMECPUS reply */
	kdp_hdr_t	hdr;
} kdp_resumecpus_reply_t;

typedef struct {
  kdp_hdr_t hdr;
  unsigned long address;
} kdp_breakpoint_req_t;

typedef struct {
  kdp_hdr_t hdr;
  kdp_error_t error;
} kdp_breakpoint_reply_t;

/*
 * Exception notifications
 * (Exception notifications are not requests, and in fact travel from
 * the remote debugger to the gdb agent KDB.)
 */
typedef struct {			/* exc. info for one cpu */
	unsigned	cpu;
	/*
	 * Following info is defined as
	 * per <mach/exception.h>
	 */
	unsigned	exception;
	unsigned	code;
	unsigned	subcode;
} kdp_exc_info_t;

typedef struct {			/* KDP_EXCEPTION notification */
	kdp_hdr_t	hdr;
	unsigned	n_exc_info;
	kdp_exc_info_t	exc_info[0];
} kdp_exception_t;

typedef struct {			/* KDP_EXCEPTION acknowledgement */
	kdp_hdr_t	hdr;
} kdp_exception_ack_t;

/*
 * Child termination messages
 */
typedef enum {
	KDP_FAULT = 0,		/* child took fault (internal use) */
	KDP_EXIT,		/* child exited */
	KDP_POWEROFF,		/* child power-off */
	KDP_REBOOT,		/* child reboot */
	KDP_COMMAND_MODE	/* child exit to mon command_mode */
} kdp_termination_code_t;

typedef struct {			/* KDP_TERMINATION notification */
	kdp_hdr_t		hdr;
	kdp_termination_code_t	term_code;
	unsigned		exit_code;
} kdp_termination_t;

typedef struct {
	kdp_hdr_t	hdr;
} kdp_termination_ack_t;

typedef union {
	kdp_hdr_t		hdr;
	kdp_connect_req_t	connect_req;
	kdp_connect_reply_t	connect_reply;
	kdp_disconnect_req_t	disconnect_req;
	kdp_disconnect_reply_t	disconnect_reply;
	kdp_hostinfo_req_t	hostinfo_req;
	kdp_hostinfo_reply_t	hostinfo_reply;
	kdp_version_req_t	version_req;
	kdp_version_reply_t	version_reply;
	kdp_maxbytes_req_t	maxbytes_req;
	kdp_maxbytes_reply_t	maxbytes_reply;
	kdp_readmem_req_t	readmem_req;
	kdp_readmem_reply_t	readmem_reply;
	kdp_writemem_req_t	writemem_req;
	kdp_writemem_reply_t	writemem_reply;
	kdp_readregs_req_t	readregs_req;
	kdp_readregs_reply_t	readregs_reply;
	kdp_writeregs_req_t	writeregs_req;
	kdp_writeregs_reply_t	writeregs_reply;
	kdp_load_req_t		load_req;
	kdp_load_reply_t	load_reply;
	kdp_imagepath_req_t	imagepath_req;
	kdp_imagepath_reply_t	imagepath_reply;
	kdp_suspend_req_t	suspend_req;
	kdp_suspend_reply_t	suspend_reply;
	kdp_resumecpus_req_t	resumecpus_req;
	kdp_resumecpus_reply_t	resumecpus_reply;
	kdp_exception_t		exception;
	kdp_exception_ack_t	exception_ack;
	kdp_termination_t	termination;
	kdp_termination_ack_t	termination_ack;
	kdp_breakpoint_req_t	breakpoint_req;
	kdp_breakpoint_reply_t	breakpoint_reply;
	kdp_reattach_req_t	reattach_req;
	kdp_regions_req_t	regions_req;
	kdp_regions_reply_t	regions_reply;
} kdp_pkt_t;

#define MAX_KDP_PKT_SIZE	1200	/* max packet size */
#define MAX_KDP_DATA_SIZE	1024	/* max r/w data per packet */
Commit	Line	Data
1c79356b A	1	/*
	2	* Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
	3	*
6601e61a	4	* @APPLE_LICENSE_HEADER_START@
1c79356b	5	*
6601e61a A	6	* The contents of this file constitute Original Code as defined in and
	7	* are subject to the Apple Public Source License Version 1.1 (the
	8	* "License"). You may not use this file except in compliance with the
	9	* License. Please obtain a copy of the License at
	10	* http://www.apple.com/publicsource and read it before using this file.
8f6c56a5	11	*
6601e61a A	12	* This Original Code and all software distributed under the License are
6601e61a A	13	* distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
8f6c56a5 A	14	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
8f6c56a5 A	15	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
6601e61a A	16	* FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
	17	* License for the specific language governing rights and limitations
	18	* under the License.
8f6c56a5	19	*
6601e61a	20	* @APPLE_LICENSE_HEADER_END@
1c79356b	21	*/
9bccf70c A	22
	23	/*
	24	* Definition of remote debugger protocol.
1c79356b A	25	*/
	26
	27	#include <mach/vm_prot.h>
	28
	29	/*
	30	* Retransmit parameters
	31	*/
	32	#if DDEBUG_DEBUG \|\| DEBUG_DEBUG
	33	#define KDP_REXMIT_SECS 20 /* rexmit if no ack in 3 secs */
	34	#else /* DDEBUG_DEBUG \|\| DEBUG_DEBUG */
	35	#define KDP_REXMIT_SECS 3 /* rexmit if no ack in 3 secs */
	36	#endif /* DDEBUG_DEBUG \|\| DEBUG_DEBUG */
	37	#define KDP_REXMIT_TRIES 8 /* xmit 8 times, then give up */
	38
	39	/*
	40	* (NMI) Attention Max Wait Time
	41	* Remote will resume unless KDP requests is received within this
	42	* many seconds after an attention (nmi) packet is sent.
	43	*/
	44	#define KDP_MAX_ATTN_WAIT 30 /* wait max of 30 seconds */
	45
	46	/*
	47	* Well-known UDP port, debugger side.
	48	* FIXME: This is what the 68K guys use, but beats me how they chose it...
	49	*/
	50	#define KDP_REMOTE_PORT 41139 /* pick one and register it */
	51
	52	/*
	53	* UDP ports, KDB side. 5 port numbers are reserved for each port (request
	54	* and exception). This allows multiple KDBs to run on one host.
	55	*/
	56	#define UDP_HOST_COMM_BASE 41140
	57	#define UDP_HOST_EXCEP_BASE 41145
	58	#define NUM_UDP_HOST_PORTS 5
	59
	60	/*
	61	* Requests
	62	*/
	63	typedef enum {
	64	/* connection oriented requests */
	65	KDP_CONNECT, KDP_DISCONNECT,
	66
	67	/* obtaining client info */
9bccf70c	68	KDP_HOSTINFO, KDP_VERSION, KDP_MAXBYTES,
1c79356b A	69
	70	/* memory access */
	71	KDP_READMEM, KDP_WRITEMEM,
	72
	73	/* register access */
	74	KDP_READREGS, KDP_WRITEREGS,
	75
	76	/* executable image info */
	77	KDP_LOAD, KDP_IMAGEPATH,
	78
	79	/* execution control */
	80	KDP_SUSPEND, KDP_RESUMECPUS,
	81
	82	/* exception and termination notification, NOT true requests */
	83	KDP_EXCEPTION, KDP_TERMINATION,
	84
9bccf70c A	85	/* breakpoint control */
	86	KDP_BREAKPOINT_SET, KDP_BREAKPOINT_REMOVE,
	87
	88	/* vm regions */
	89	KDP_REGIONS,
	90
	91	/* reattach to a connected host */
	92	KDP_REATTACH,
	93
1c79356b A	94	/* remote reboot request */
	95	KDP_HOSTREBOOT
	96	} kdp_req_t;
	97
	98	/*
	99	* Common KDP packet header
	100	*/
	101	typedef struct {
	102	kdp_req_t request:7; /* request type */
	103	unsigned is_reply:1; /* 0 => request, 1 => reply */
	104	unsigned seq:8; /* sequence number within session */
	105	unsigned len:16; /* length of entire pkt including hdr */
	106	unsigned key; /* session key */
	107	} kdp_hdr_t;
	108
	109	/*
	110	* KDP errors
	111	*/
	112	typedef enum {
	113	KDPERR_NO_ERROR = 0,
	114	KDPERR_ALREADY_CONNECTED,
	115	KDPERR_BAD_NBYTES,
	116	KDPERR_BADFLAVOR /* bad flavor in w/r regs */
	117	} kdp_error_t;
	118
	119	/*
	120	* KDP requests and reply packet formats
	121	*/
	122
	123	/*
	124	* KDP_CONNECT
	125	*/
	126	typedef struct { /* KDP_CONNECT request */
	127	kdp_hdr_t hdr;
	128	unsigned short req_reply_port; /* udp port which to send replies */
	129	unsigned short exc_note_port; /* udp port which to send exc notes */
	130	char greeting[0]; /* "greetings", null-terminated */
	131	} kdp_connect_req_t;
	132
	133	typedef struct { /* KDP_CONNECT reply */
	134	kdp_hdr_t hdr;
	135	kdp_error_t error;
	136	} kdp_connect_reply_t;
	137
	138	/*
	139	* KDP_DISCONNECT
	140	*/
	141	typedef struct { /* KDP_DISCONNECT request */
	142	kdp_hdr_t hdr;
	143	} kdp_disconnect_req_t;
	144
	145	typedef struct { /* KDP_DISCONNECT reply */
	146	kdp_hdr_t hdr;
	147	} kdp_disconnect_reply_t;
	148
9bccf70c A	149	/*
	150	* KDP_REATTACH
	151	*/
	152	typedef struct {
	153	kdp_hdr_t hdr;
	154	unsigned short req_reply_port; /* udp port which to send replies */
	155	} kdp_reattach_req_t;
	156
1c79356b A	157	/*
	158	* KDP_HOSTINFO
	159	*/
	160	typedef struct { /* KDP_HOSTINFO request */
	161	kdp_hdr_t hdr;
	162	} kdp_hostinfo_req_t;
	163
	164	typedef struct {
	165	unsigned cpus_mask; /* bit is 1 if cpu present */
	166	int cpu_type;
	167	int cpu_subtype;
	168	} kdp_hostinfo_t;
	169
	170	typedef struct { /* KDP_HOSTINFO reply */
	171	kdp_hdr_t hdr;
	172	kdp_hostinfo_t hostinfo;
	173	} kdp_hostinfo_reply_t;
	174
9bccf70c A	175	/*
	176	* KDP_VERSION
	177	*/
	178	typedef struct { /* KDP_VERSION request */
	179	kdp_hdr_t hdr;
	180	} kdp_version_req_t;
	181
	182	#define KDP_FEATURE_BP 0x1 /* local breakpoint support */
	183
	184	typedef struct { /* KDP_REGIONS reply */
	185	kdp_hdr_t hdr;
	186	unsigned version;
	187	unsigned feature;
	188	unsigned pad0;
	189	unsigned pad1;
	190	} kdp_version_reply_t;
	191
1c79356b A	192	/*
	193	* KDP_REGIONS
	194	*/
	195	typedef struct { /* KDP_REGIONS request */
	196	kdp_hdr_t hdr;
	197	} kdp_regions_req_t;
	198
	199	#define VM_PROT_VOLATILE ((vm_prot_t) 0x08) /* not cacheable */
	200	#define VM_PROT_SPARSE ((vm_prot_t) 0x10) /* sparse addr space */
	201
	202	typedef struct {
	203	void *address;
	204	unsigned nbytes;
	205	vm_prot_t protection;
	206	} kdp_region_t;
	207
	208	typedef struct { /* KDP_REGIONS reply */
	209	kdp_hdr_t hdr;
	210	unsigned nregions;
	211	kdp_region_t regions[0];
	212	} kdp_regions_reply_t;
	213
	214	/*
	215	* KDP_MAXBYTES
	216	*/
	217	typedef struct { /* KDP_MAXBYTES request */
	218	kdp_hdr_t hdr;
	219	} kdp_maxbytes_req_t;
	220
	221	typedef struct { /* KDP_MAXBYTES reply */
	222	kdp_hdr_t hdr;
	223	unsigned max_bytes;
	224	} kdp_maxbytes_reply_t;
	225
	226	/*
	227	* KDP_READMEM
	228	*/
	229	typedef struct { /* KDP_READMEM request */
	230	kdp_hdr_t hdr;
	231	void *address;
	232	unsigned nbytes;
	233	} kdp_readmem_req_t;
	234
	235	typedef struct { /* KDP_READMEM reply */
	236	kdp_hdr_t hdr;
	237	kdp_error_t error;
	238	char data[0];
	239	} kdp_readmem_reply_t;
	240
	241	/*
	242	* KDP_WRITEMEM
	243	*/
	244	typedef struct { /* KDP_WRITEMEM request */
	245	kdp_hdr_t hdr;
	246	void *address;
	247	unsigned nbytes;
	248	char data[0];
	249	} kdp_writemem_req_t;
	250
	251	typedef struct { /* KDP_WRITEMEM reply */
	252	kdp_hdr_t hdr;
	253	kdp_error_t error;
	254	} kdp_writemem_reply_t;
	255
256	/*
257	* KDP_READREGS
258	*/
259	typedef struct { /* KDP_READREGS request */
260	kdp_hdr_t hdr;
261	unsigned cpu;
262	unsigned flavor;
263	} kdp_readregs_req_t;
264
265	typedef struct { /* KDP_READREGS reply */
266	kdp_hdr_t hdr;
267	kdp_error_t error; /* could be KDPERR_BADFLAVOR */
268	char data[0];
269	} kdp_readregs_reply_t;
270
271	/*
272	* KDP_WRITEREGS
273	*/
274	typedef struct { /* KDP_WRITEREGS request */
275	kdp_hdr_t hdr;
276	unsigned cpu;
277	unsigned flavor;
278	char data[0];
279	} kdp_writeregs_req_t;
280
281	typedef struct { /* KDP_WRITEREGS reply */
282	kdp_hdr_t hdr;
283	kdp_error_t error;
284	} kdp_writeregs_reply_t;
285
286	/*
287	* KDP_LOAD
288	*/
289	typedef struct { /* KDP_LOAD request */
290	kdp_hdr_t hdr;
291	char file_args[0];
292	} kdp_load_req_t;
293
294	typedef struct { /* KDP_LOAD reply */
295	kdp_hdr_t hdr;
296	kdp_error_t error;
297	} kdp_load_reply_t;
298
299	/*
300	* KDP_IMAGEPATH
301	*/
302	typedef struct { /* KDP_IMAGEPATH request */
303	kdp_hdr_t hdr;
304	} kdp_imagepath_req_t;
305
306	typedef struct { /* KDP_IMAGEPATH reply */
307	kdp_hdr_t hdr;
308	char path[0];
309	} kdp_imagepath_reply_t;
310
311	/*
312	* KDP_SUSPEND
313	*/
314	typedef struct { /* KDP_SUSPEND request */
315	kdp_hdr_t hdr;
316	} kdp_suspend_req_t;
317
318	typedef struct { /* KDP_SUSPEND reply */
319	kdp_hdr_t hdr;
320	} kdp_suspend_reply_t;
321
322	/*
323	* KDP_RESUMECPUS
324	*/
325	typedef struct { /* KDP_RESUMECPUS request */
326	kdp_hdr_t hdr;
327	unsigned cpu_mask;
328	} kdp_resumecpus_req_t;
329
330	typedef struct { /* KDP_RESUMECPUS reply */
331	kdp_hdr_t hdr;
332	} kdp_resumecpus_reply_t;
333
9bccf70c A	334	typedef struct {
	335	kdp_hdr_t hdr;
	336	unsigned long address;
	337	} kdp_breakpoint_req_t;
	338
	339	typedef struct {
	340	kdp_hdr_t hdr;
	341	kdp_error_t error;
	342	} kdp_breakpoint_reply_t;
	343
1c79356b A	344	/*
	345	* Exception notifications
	346	* (Exception notifications are not requests, and in fact travel from
	347	* the remote debugger to the gdb agent KDB.)
	348	*/
	349	typedef struct { /* exc. info for one cpu */
	350	unsigned cpu;
	351	/*
	352	* Following info is defined as
	353	* per <mach/exception.h>
	354	*/
	355	unsigned exception;
	356	unsigned code;
	357	unsigned subcode;
	358	} kdp_exc_info_t;
	359
	360	typedef struct { /* KDP_EXCEPTION notification */
	361	kdp_hdr_t hdr;
	362	unsigned n_exc_info;
	363	kdp_exc_info_t exc_info[0];
	364	} kdp_exception_t;
	365
	366	typedef struct { /* KDP_EXCEPTION acknowledgement */
	367	kdp_hdr_t hdr;
	368	} kdp_exception_ack_t;
	369
	370	/*
	371	* Child termination messages
	372	*/
	373	typedef enum {
	374	KDP_FAULT = 0, /* child took fault (internal use) */
	375	KDP_EXIT, /* child exited */
	376	KDP_POWEROFF, /* child power-off */
	377	KDP_REBOOT, /* child reboot */
	378	KDP_COMMAND_MODE /* child exit to mon command_mode */
	379	} kdp_termination_code_t;
	380
	381	typedef struct { /* KDP_TERMINATION notification */
	382	kdp_hdr_t hdr;
	383	kdp_termination_code_t term_code;
	384	unsigned exit_code;
	385	} kdp_termination_t;
	386
	387	typedef struct {
	388	kdp_hdr_t hdr;
	389	} kdp_termination_ack_t;
	390
	391	typedef union {
	392	kdp_hdr_t hdr;
	393	kdp_connect_req_t connect_req;
	394	kdp_connect_reply_t connect_reply;
	395	kdp_disconnect_req_t disconnect_req;
	396	kdp_disconnect_reply_t disconnect_reply;
	397	kdp_hostinfo_req_t hostinfo_req;
	398	kdp_hostinfo_reply_t hostinfo_reply;
9bccf70c A	399	kdp_version_req_t version_req;
9bccf70c A	400	kdp_version_reply_t version_reply;
1c79356b A	401	kdp_maxbytes_req_t maxbytes_req;
	402	kdp_maxbytes_reply_t maxbytes_reply;
	403	kdp_readmem_req_t readmem_req;
	404	kdp_readmem_reply_t readmem_reply;
	405	kdp_writemem_req_t writemem_req;
	406	kdp_writemem_reply_t writemem_reply;
	407	kdp_readregs_req_t readregs_req;
	408	kdp_readregs_reply_t readregs_reply;
	409	kdp_writeregs_req_t writeregs_req;
	410	kdp_writeregs_reply_t writeregs_reply;
	411	kdp_load_req_t load_req;
	412	kdp_load_reply_t load_reply;
	413	kdp_imagepath_req_t imagepath_req;
	414	kdp_imagepath_reply_t imagepath_reply;
	415	kdp_suspend_req_t suspend_req;
	416	kdp_suspend_reply_t suspend_reply;
	417	kdp_resumecpus_req_t resumecpus_req;
	418	kdp_resumecpus_reply_t resumecpus_reply;
	419	kdp_exception_t exception;
	420	kdp_exception_ack_t exception_ack;
	421	kdp_termination_t termination;
	422	kdp_termination_ack_t termination_ack;
9bccf70c A	423	kdp_breakpoint_req_t breakpoint_req;
	424	kdp_breakpoint_reply_t breakpoint_reply;
	425	kdp_reattach_req_t reattach_req;
	426	kdp_regions_req_t regions_req;
	427	kdp_regions_reply_t regions_reply;
1c79356b A	428	} kdp_pkt_t;
	429
	430	#define MAX_KDP_PKT_SIZE 1200 /* max packet size */
	431	#define MAX_KDP_DATA_SIZE 1024 /* max r/w data per packet */