1 /* Remote target communications for serial-line targets in custom GDB protocol
2 Copyright 1988, 91, 92, 93, 94, 95, 96, 97, 98, 1999
3 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
22 /* See the GDB User Guide for details of the GDB remote protocol. */
25 #include "gdb_string.h"
34 /*#include "terminal.h" */
37 #include "gdb-stabs.h"
38 #include "gdbthread.h"
46 #include <sys/types.h>
49 #include "event-loop.h"
50 #include "event-top.h"
56 /* Prototypes for local functions */
57 static void cleanup_sigint_signal_handler (void *dummy
);
58 static void initialize_sigint_signal_handler (void);
60 static void handle_remote_sigint
PARAMS ((int));
61 static void handle_remote_sigint_twice
PARAMS ((int));
62 static void async_remote_interrupt
PARAMS ((gdb_client_data
));
63 void async_remote_interrupt_twice
PARAMS ((gdb_client_data
));
65 static void build_remote_gdbarch_data
PARAMS ((void));
67 static int remote_write_bytes (CORE_ADDR memaddr
, char *myaddr
, int len
);
69 static int remote_read_bytes
PARAMS ((CORE_ADDR memaddr
,
70 char *myaddr
, int len
));
72 static void remote_files_info
PARAMS ((struct target_ops
* ignore
));
74 static int remote_xfer_memory
PARAMS ((CORE_ADDR memaddr
, char *myaddr
,
75 int len
, int should_write
,
76 struct target_ops
* target
));
78 static void remote_prepare_to_store
PARAMS ((void));
80 static void remote_fetch_registers
PARAMS ((int regno
));
82 static void remote_resume
PARAMS ((int pid
, int step
,
83 enum target_signal siggnal
));
84 static void remote_async_resume
PARAMS ((int pid
, int step
,
85 enum target_signal siggnal
));
86 static int remote_start_remote
PARAMS ((PTR
));
88 static void remote_open
PARAMS ((char *name
, int from_tty
));
89 static void remote_async_open
PARAMS ((char *name
, int from_tty
));
91 static void extended_remote_open
PARAMS ((char *name
, int from_tty
));
92 static void extended_remote_async_open
PARAMS ((char *name
, int from_tty
));
94 static void remote_open_1
PARAMS ((char *, int, struct target_ops
*,
96 static void remote_async_open_1
PARAMS ((char *, int, struct target_ops
*,
99 static void remote_close
PARAMS ((int quitting
));
101 static void remote_store_registers
PARAMS ((int regno
));
103 static void remote_mourn
PARAMS ((void));
104 static void remote_async_mourn
PARAMS ((void));
106 static void extended_remote_restart
PARAMS ((void));
108 static void extended_remote_mourn
PARAMS ((void));
110 static void extended_remote_create_inferior
PARAMS ((char *, char *, char **));
111 static void extended_remote_async_create_inferior
PARAMS ((char *, char *, char **));
113 static void remote_mourn_1
PARAMS ((struct target_ops
*));
115 static void remote_send (char *buf
, long sizeof_buf
);
117 static int readchar
PARAMS ((int timeout
));
119 static int remote_wait
PARAMS ((int pid
, struct target_waitstatus
* status
));
120 static int remote_async_wait
PARAMS ((int pid
, struct target_waitstatus
* status
));
122 static void remote_kill
PARAMS ((void));
123 static void remote_async_kill
PARAMS ((void));
125 static int tohex
PARAMS ((int nib
));
127 static void remote_detach
PARAMS ((char *args
, int from_tty
));
128 static void remote_async_detach
PARAMS ((char *args
, int from_tty
));
130 static void remote_interrupt
PARAMS ((int signo
));
132 static void remote_interrupt_twice
PARAMS ((int signo
));
134 static void interrupt_query
PARAMS ((void));
136 static void set_thread
PARAMS ((int, int));
138 static int remote_thread_alive
PARAMS ((int));
140 static void get_offsets
PARAMS ((void));
142 static long read_frame (char *buf
, long sizeof_buf
);
144 static int remote_insert_breakpoint
PARAMS ((CORE_ADDR
, char *));
146 static int remote_remove_breakpoint
PARAMS ((CORE_ADDR
, char *));
148 static int hexnumlen
PARAMS ((ULONGEST num
));
150 static void init_remote_ops
PARAMS ((void));
152 static void init_extended_remote_ops
PARAMS ((void));
154 static void init_remote_cisco_ops
PARAMS ((void));
156 static struct target_ops remote_cisco_ops
;
158 static void remote_stop
PARAMS ((void));
160 static int ishex
PARAMS ((int ch
, int *val
));
162 static int stubhex
PARAMS ((int ch
));
164 static int remote_query
PARAMS ((int /*char */ , char *, char *, int *));
166 static int hexnumstr
PARAMS ((char *, ULONGEST
));
168 static int hexnumnstr
PARAMS ((char *, ULONGEST
, int));
170 static CORE_ADDR remote_address_masked
PARAMS ((CORE_ADDR
));
172 static void print_packet
PARAMS ((char *));
174 static unsigned long crc32
PARAMS ((unsigned char *, int, unsigned int));
176 static void compare_sections_command
PARAMS ((char *, int));
178 static void packet_command
PARAMS ((char *, int));
180 static int stub_unpack_int
PARAMS ((char *buff
, int fieldlength
));
182 static int remote_current_thread
PARAMS ((int oldpid
));
184 static void remote_find_new_threads
PARAMS ((void));
186 static void record_currthread
PARAMS ((int currthread
));
188 /* exported functions */
190 extern int fromhex
PARAMS ((int a
));
192 static int putpkt_binary
PARAMS ((char *buf
, int cnt
));
194 static void check_binary_download
PARAMS ((CORE_ADDR addr
));
196 struct packet_config
;
198 static void show_packet_config_cmd
PARAMS ((struct packet_config
* config
));
200 static void set_packet_config_cmd
PARAMS ((struct packet_config
* config
,
201 struct cmd_list_element
* c
));
203 static void add_packet_config_cmd
PARAMS ((struct packet_config
* config
,
206 void (*set_func
) (char *args
, int from_tty
, struct cmd_list_element
* c
),
207 void (*show_func
) (char *name
, int from_tty
),
208 struct cmd_list_element
**setlist
,
209 struct cmd_list_element
**showlist
));
211 static void init_packet_config
PARAMS ((struct packet_config
* config
));
213 static void set_remote_protocol_P_packet_cmd
PARAMS ((char *args
,
215 struct cmd_list_element
* c
));
217 static void show_remote_protocol_P_packet_cmd
PARAMS ((char *args
,
220 static void set_remote_protocol_Z_packet_cmd
PARAMS ((char *args
,
222 struct cmd_list_element
* c
));
224 static void show_remote_protocol_Z_packet_cmd
PARAMS ((char *args
,
230 /* Define the target subroutine names */
232 void open_remote_target
PARAMS ((char *, int, struct target_ops
*, int));
234 void _initialize_remote
PARAMS ((void));
238 static struct target_ops remote_ops
;
240 static struct target_ops extended_remote_ops
;
242 /* Temporary target ops. Just like the remote_ops and
243 extended_remote_ops, but with asynchronous support. */
244 static struct target_ops remote_async_ops
;
246 static struct target_ops extended_async_remote_ops
;
248 /* This was 5 seconds, which is a long time to sit and wait.
249 Unless this is going though some terminal server or multiplexer or
250 other form of hairy serial connection, I would think 2 seconds would
253 /* Changed to allow option to set timeout value.
254 was static int remote_timeout = 2; */
255 extern int remote_timeout
;
257 /* FIXME: cagney/1999-09-23: Even though getpkt was called with
258 ``forever'' still use the normal timeout mechanism. This is
259 currently used by the ASYNC code to guarentee that target reads
260 during the initial connect always time-out. Once getpkt has been
261 modified to return a timeout indication and, in turn
262 remote_wait()/wait_for_inferior() have gained a timeout parameter
264 static int wait_forever_enabled_p
= 1;
267 /* This variable chooses whether to send a ^C or a break when the user
268 requests program interruption. Although ^C is usually what remote
269 systems expect, and that is the default here, sometimes a break is
270 preferable instead. */
272 static int remote_break
;
274 /* Descriptor for I/O to remote machine. Initialize it to NULL so that
275 remote_open knows that we don't have a file open when the program
277 static serial_t remote_desc
= NULL
;
279 /* This is set by the target (thru the 'S' message)
280 to denote that the target is in kernel mode. */
281 static int cisco_kernel_mode
= 0;
283 /* This variable sets the number of bits in an address that are to be
284 sent in a memory ("M" or "m") packet. Normally, after stripping
285 leading zeros, the entire address would be sent. This variable
286 restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The
287 initial implementation of remote.c restricted the address sent in
288 memory packets to ``host::sizeof long'' bytes - (typically 32
289 bits). Consequently, for 64 bit targets, the upper 32 bits of an
290 address was never sent. Since fixing this bug may cause a break in
291 some remote targets this variable is principly provided to
292 facilitate backward compatibility. */
294 static int remote_address_size
;
296 /* Tempoary to track who currently owns the terminal. See
297 target_async_terminal_* for more details. */
299 static int remote_async_terminal_ours_p
;
302 /* This is the size (in chars) of the first response to the ``g''
303 packet. It is used as a heuristic when determining the maximum
304 size of memory-read and memory-write packets. A target will
305 typically only reserve a buffer large enough to hold the ``g''
306 packet. The size does not include packet overhead (headers and
309 static long actual_register_packet_size
;
311 /* This is the maximum size (in chars) of a non read/write packet. It
312 is also used as a cap on the size of read/write packets. */
314 static long remote_packet_size
;
316 #define PBUFSIZ (remote_packet_size)
318 /* User configurable variables for the number of characters in a
319 memory read/write packet. MIN (PBUFSIZ, g-packet-size) is the
320 default. Some targets need smaller values (fifo overruns, et.al.)
321 and some users need larger values (speed up transfers). The
322 variables ``preferred_*'' (the user request), ``current_*'' (what
323 was actually set) and ``forced_*'' (Positive - a soft limit,
324 negative - a hard limit). */
326 struct memory_packet_config
333 /* Compute the current size of a read/write packet. Since this makes
334 use of ``actual_register_packet_size'' the computation is dynamic. */
337 get_memory_packet_size (struct memory_packet_config
*config
)
339 /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk
340 law?) that some hosts don't cope very well with large alloca()
341 calls. Eventually the alloca() code will be replaced by calls to
342 xmalloc() and make_cleanups() allowing this restriction to either
343 be lifted or removed. */
344 #ifndef MAX_REMOTE_PACKET_SIZE
345 #define MAX_REMOTE_PACKET_SIZE 16384
347 /* NOTE: 16 is just chosen at random. */
348 #ifndef MIN_REMOTE_PACKET_SIZE
349 #define MIN_REMOTE_PACKET_SIZE 16
354 if (config
->size
<= 0)
355 what_they_get
= MAX_REMOTE_PACKET_SIZE
;
357 what_they_get
= config
->size
;
361 what_they_get
= remote_packet_size
;
362 /* Limit the packet to the size specified by the user. */
364 && what_they_get
> config
->size
)
365 what_they_get
= config
->size
;
366 /* Limit it to the size of the targets ``g'' response. */
367 if (actual_register_packet_size
> 0
368 && what_they_get
> actual_register_packet_size
)
369 what_they_get
= actual_register_packet_size
;
371 if (what_they_get
> MAX_REMOTE_PACKET_SIZE
)
372 what_they_get
= MAX_REMOTE_PACKET_SIZE
;
373 if (what_they_get
< MIN_REMOTE_PACKET_SIZE
)
374 what_they_get
= MIN_REMOTE_PACKET_SIZE
;
375 return what_they_get
;
378 /* Update the size of a read/write packet. If they user wants
379 something really big then do a sanity check. */
382 set_memory_packet_size (char *args
, struct memory_packet_config
*config
)
384 int fixed_p
= config
->fixed_p
;
385 long size
= config
->size
;
387 error ("Argument required (integer, `fixed' or `limited').");
388 else if (strcmp (args
, "hard") == 0
389 || strcmp (args
, "fixed") == 0)
391 else if (strcmp (args
, "soft") == 0
392 || strcmp (args
, "limit") == 0)
397 size
= strtoul (args
, &end
, 0);
399 error ("Invalid %s (bad syntax).", config
->name
);
401 /* Instead of explicitly capping the size of a packet to
402 MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is
403 instead allowed to set the size to something arbitrarily
405 if (size
> MAX_REMOTE_PACKET_SIZE
)
406 error ("Invalid %s (too large).", config
->name
);
410 if (fixed_p
&& !config
->fixed_p
)
412 if (! query ("The target may not be able to correctly handle a %s\n"
413 "of %ld bytes. Change the packet size? ",
415 error ("Packet size not changed.");
417 /* Update the config. */
418 config
->fixed_p
= fixed_p
;
423 show_memory_packet_size (struct memory_packet_config
*config
)
425 printf_filtered ("The %s is %ld. ", config
->name
, config
->size
);
427 printf_filtered ("Packets are fixed at %ld bytes.\n",
428 get_memory_packet_size (config
));
430 printf_filtered ("Packets are limited to %ld bytes.\n",
431 get_memory_packet_size (config
));
434 static struct memory_packet_config memory_write_packet_config
=
436 "memory-write-packet-size",
440 set_memory_write_packet_size (char *args
, int from_tty
)
442 set_memory_packet_size (args
, &memory_write_packet_config
);
446 show_memory_write_packet_size (char *args
, int from_tty
)
448 show_memory_packet_size (&memory_write_packet_config
);
452 get_memory_write_packet_size (void)
454 return get_memory_packet_size (&memory_write_packet_config
);
457 static struct memory_packet_config memory_read_packet_config
=
459 "memory-read-packet-size",
463 set_memory_read_packet_size (char *args
, int from_tty
)
465 set_memory_packet_size (args
, &memory_read_packet_config
);
469 show_memory_read_packet_size (char *args
, int from_tty
)
471 show_memory_packet_size (&memory_read_packet_config
);
475 get_memory_read_packet_size (void)
477 long size
= get_memory_packet_size (&memory_read_packet_config
);
478 /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an
479 extra buffer size argument before the memory read size can be
480 increased beyond PBUFSIZ. */
486 /* Register packet size initialization. Since the bounds change when
487 the architecture changes (namely REGISTER_BYTES) this all needs to
491 register_remote_packet_sizes (void)
493 REGISTER_GDBARCH_SWAP (remote_packet_size
);
494 REGISTER_GDBARCH_SWAP (actual_register_packet_size
);
498 build_remote_packet_sizes (void)
500 /* Default maximum number of characters in a packet body. Many
501 remote stubs have a hardwired buffer size of 400 bytes
502 (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used
503 as the maximum packet-size to ensure that the packet and an extra
504 NUL character can always fit in the buffer. This stops GDB
505 trashing stubs that try to squeeze an extra NUL into what is
506 already a full buffer (As of 1999-12-04 that was most stubs. */
507 remote_packet_size
= 400 - 1;
508 /* Should REGISTER_BYTES needs more space than the default, adjust
509 the size accordingly. Remember that each byte is encoded as two
510 characters. 32 is the overhead for the packet header /
511 footer. NOTE: cagney/1999-10-26: I suspect that 8
512 (``$NN:G...#NN'') is a better guess, the below has been padded a
514 if (REGISTER_BYTES
> ((remote_packet_size
- 32) / 2))
515 remote_packet_size
= (REGISTER_BYTES
* 2 + 32);
517 /* This one is filled in when a ``g'' packet is received. */
518 actual_register_packet_size
= 0;
521 /* Generic configuration support for packets the stub optionally
522 supports. Allows the user to specify the use of the packet as well
523 as allowing GDB to auto-detect support in the remote stub. */
527 PACKET_SUPPORT_UNKNOWN
= 0,
534 PACKET_AUTO_DETECT
= 0,
543 enum packet_detect detect
;
544 enum packet_support support
;
547 static char packet_support_auto
[] = "auto";
548 static char packet_enable
[] = "enable";
549 static char packet_disable
[] = "disable";
550 static char *packet_support_enums
[] =
559 set_packet_config_cmd (config
, c
)
560 struct packet_config
*config
;
561 struct cmd_list_element
*c
;
563 if (config
->state
== packet_enable
)
565 config
->detect
= PACKET_MANUAL_DETECT
;
566 config
->support
= PACKET_ENABLE
;
568 else if (config
->state
== packet_disable
)
570 config
->detect
= PACKET_MANUAL_DETECT
;
571 config
->support
= PACKET_DISABLE
;
573 else if (config
->state
== packet_support_auto
)
575 config
->detect
= PACKET_AUTO_DETECT
;
576 config
->support
= PACKET_SUPPORT_UNKNOWN
;
579 internal_error ("Bad enum value");
583 show_packet_config_cmd (config
)
584 struct packet_config
*config
;
586 char *support
= "internal-error";
587 switch (config
->support
)
593 support
= "disabled";
595 case PACKET_SUPPORT_UNKNOWN
:
599 switch (config
->detect
)
601 case PACKET_AUTO_DETECT
:
602 printf_filtered ("Support for remote protocol `%s' (%s) packet is auto-detected, currently %s.\n",
603 config
->name
, config
->title
, support
);
605 case PACKET_MANUAL_DETECT
:
606 printf_filtered ("Support for remote protocol `%s' (%s) is currently %s.\n",
607 config
->name
, config
->title
, support
);
612 add_packet_config_cmd (config
, name
, title
, set_func
, show_func
,
614 struct packet_config
*config
;
617 void (*set_func
) PARAMS ((char *args
, int from_tty
,
618 struct cmd_list_element
* c
));
619 void (*show_func
) PARAMS ((char *name
, int from_tty
));
620 struct cmd_list_element
**setlist
;
621 struct cmd_list_element
**showlist
;
623 struct cmd_list_element
*c
;
628 config
->title
= title
;
629 asprintf (&set_doc
, "Set use of remote protocol `%s' (%s) packet",
631 asprintf (&show_doc
, "Show current use of remote protocol `%s' (%s) packet",
633 asprintf (&full_name
, "%s-packet", name
);
634 c
= add_set_enum_cmd (full_name
,
635 class_obscure
, packet_support_enums
,
636 (char *) &config
->state
,
638 c
->function
.sfunc
= set_func
;
639 add_cmd (full_name
, class_obscure
, show_func
, show_doc
, showlist
);
643 init_packet_config (config
)
644 struct packet_config
*config
;
646 switch (config
->detect
)
648 case PACKET_AUTO_DETECT
:
649 config
->support
= PACKET_SUPPORT_UNKNOWN
;
651 case PACKET_MANUAL_DETECT
:
652 /* let the user beware */
657 /* Should we try the 'P' (set register) request? */
659 static struct packet_config remote_protocol_P
;
662 set_remote_protocol_P_packet_cmd (args
, from_tty
, c
)
665 struct cmd_list_element
*c
;
667 set_packet_config_cmd (&remote_protocol_P
, c
);
671 show_remote_protocol_P_packet_cmd (args
, from_tty
)
675 show_packet_config_cmd (&remote_protocol_P
);
678 /* Should we try the 'Z' (set breakpoint) request? */
680 static struct packet_config remote_protocol_Z
;
683 set_remote_protocol_Z_packet_cmd (args
, from_tty
, c
)
686 struct cmd_list_element
*c
;
688 set_packet_config_cmd (&remote_protocol_Z
, c
);
692 show_remote_protocol_Z_packet_cmd (args
, from_tty
)
696 show_packet_config_cmd (&remote_protocol_Z
);
699 /* Should we try the 'X' (remote binary download) packet?
701 This variable (available to the user via "set remote X-packet")
702 dictates whether downloads are sent in binary (via the 'X' packet).
703 We assume that the stub can, and attempt to do it. This will be
704 cleared if the stub does not understand it. This switch is still
705 needed, though in cases when the packet is supported in the stub,
706 but the connection does not allow it (i.e., 7-bit serial connection
709 static struct packet_config remote_protocol_binary_download
;
712 set_remote_protocol_binary_download_cmd (char *args
,
714 struct cmd_list_element
*c
)
716 set_packet_config_cmd (&remote_protocol_binary_download
, c
);
720 show_remote_protocol_binary_download_cmd (char *args
,
723 show_packet_config_cmd (&remote_protocol_binary_download
);
727 /* Tokens for use by the asynchronous signal handlers for SIGINT */
728 PTR sigint_remote_twice_token
;
729 PTR sigint_remote_token
;
731 /* These are pointers to hook functions that may be set in order to
732 modify resume/wait behavior for a particular architecture. */
734 void (*target_resume_hook
) PARAMS ((void));
735 void (*target_wait_loop_hook
) PARAMS ((void));
739 /* These are the threads which we last sent to the remote system.
740 -1 for all or -2 for not sent yet. */
741 static int general_thread
;
742 static int continue_thread
;
744 /* Call this function as a result of
745 1) A halt indication (T packet) containing a thread id
746 2) A direct query of currthread
747 3) Successful execution of set thread
751 record_currthread (currthread
)
754 general_thread
= currthread
;
756 /* If this is a new thread, add it to GDB's thread list.
757 If we leave it up to WFI to do this, bad things will happen. */
758 if (!in_thread_list (currthread
))
760 add_thread (currthread
);
761 printf_filtered ("[New %s]\n", target_pid_to_str (currthread
));
765 #define MAGIC_NULL_PID 42000
772 char *buf
= alloca (PBUFSIZ
);
773 int state
= gen
? general_thread
: continue_thread
;
779 buf
[1] = gen
? 'g' : 'c';
780 if (th
== MAGIC_NULL_PID
)
786 sprintf (&buf
[2], "-%x", -th
);
788 sprintf (&buf
[2], "%x", th
);
790 getpkt (buf
, PBUFSIZ
, 0);
794 continue_thread
= th
;
797 /* Return nonzero if the thread TH is still alive on the remote system. */
800 remote_thread_alive (tid
)
806 sprintf (buf
, "T-%08x", -tid
);
808 sprintf (buf
, "T%08x", tid
);
810 getpkt (buf
, sizeof (buf
), 0);
811 return (buf
[0] == 'O' && buf
[1] == 'K');
814 /* About these extended threadlist and threadinfo packets. They are
815 variable length packets but, the fields within them are often fixed
816 length. They are redundent enough to send over UDP as is the
817 remote protocol in general. There is a matching unit test module
820 #define OPAQUETHREADBYTES 8
822 /* a 64 bit opaque identifier */
823 typedef unsigned char threadref
[OPAQUETHREADBYTES
];
825 /* WARNING: This threadref data structure comes from the remote O.S., libstub
826 protocol encoding, and remote.c. it is not particularly changable */
828 /* Right now, the internal structure is int. We want it to be bigger.
832 typedef int gdb_threadref
; /* internal GDB thread reference */
834 /* gdb_ext_thread_info is an internal GDB data structure which is
835 equivalint to the reply of the remote threadinfo packet */
837 struct gdb_ext_thread_info
839 threadref threadid
; /* External form of thread reference */
840 int active
; /* Has state interesting to GDB? , regs, stack */
841 char display
[256]; /* Brief state display, name, blocked/syspended */
842 char shortname
[32]; /* To be used to name threads */
843 char more_display
[256]; /* Long info, statistics, queue depth, whatever */
846 /* The volume of remote transfers can be limited by submitting
847 a mask containing bits specifying the desired information.
848 Use a union of these values as the 'selection' parameter to
849 get_thread_info. FIXME: Make these TAG names more thread specific.
852 #define TAG_THREADID 1
854 #define TAG_DISPLAY 4
855 #define TAG_THREADNAME 8
856 #define TAG_MOREDISPLAY 16
858 #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES*2)
860 char *unpack_varlen_hex
PARAMS ((char *buff
, int *result
));
862 static char *unpack_nibble
PARAMS ((char *buf
, int *val
));
864 static char *pack_nibble
PARAMS ((char *buf
, int nibble
));
866 static char *pack_hex_byte
PARAMS ((char *pkt
, int /*unsigned char */ byte
));
868 static char *unpack_byte
PARAMS ((char *buf
, int *value
));
870 static char *pack_int
PARAMS ((char *buf
, int value
));
872 static char *unpack_int
PARAMS ((char *buf
, int *value
));
874 static char *unpack_string
PARAMS ((char *src
, char *dest
, int length
));
876 static char *pack_threadid
PARAMS ((char *pkt
, threadref
* id
));
878 static char *unpack_threadid
PARAMS ((char *inbuf
, threadref
* id
));
880 void int_to_threadref
PARAMS ((threadref
* id
, int value
));
882 static int threadref_to_int
PARAMS ((threadref
* ref
));
884 static void copy_threadref
PARAMS ((threadref
* dest
, threadref
* src
));
886 static int threadmatch
PARAMS ((threadref
* dest
, threadref
* src
));
888 static char *pack_threadinfo_request
PARAMS ((char *pkt
, int mode
,
891 static int remote_unpack_thread_info_response
PARAMS ((char *pkt
,
892 threadref
* expectedref
,
893 struct gdb_ext_thread_info
* info
));
896 static int remote_get_threadinfo
PARAMS ((threadref
* threadid
,
897 int fieldset
, /*TAG mask */
898 struct gdb_ext_thread_info
* info
));
900 static int adapt_remote_get_threadinfo
PARAMS ((gdb_threadref
* ref
,
902 struct gdb_ext_thread_info
* info
));
904 static char *pack_threadlist_request
PARAMS ((char *pkt
, int startflag
,
906 threadref
* nextthread
));
908 static int parse_threadlist_response
PARAMS ((char *pkt
,
910 threadref
* original_echo
,
911 threadref
* resultlist
,
914 static int remote_get_threadlist
PARAMS ((int startflag
,
915 threadref
* nextthread
,
919 threadref
* threadlist
));
921 typedef int (*rmt_thread_action
) (threadref
* ref
, void *context
);
923 static int remote_threadlist_iterator
PARAMS ((rmt_thread_action stepfunction
,
924 void *context
, int looplimit
));
926 static int remote_newthread_step
PARAMS ((threadref
* ref
, void *context
));
928 /* encode 64 bits in 16 chars of hex */
930 static const char hexchars
[] = "0123456789abcdef";
937 if ((ch
>= 'a') && (ch
<= 'f'))
939 *val
= ch
- 'a' + 10;
942 if ((ch
>= 'A') && (ch
<= 'F'))
944 *val
= ch
- 'A' + 10;
947 if ((ch
>= '0') && (ch
<= '9'))
959 if (ch
>= 'a' && ch
<= 'f')
960 return ch
- 'a' + 10;
961 if (ch
>= '0' && ch
<= '9')
963 if (ch
>= 'A' && ch
<= 'F')
964 return ch
- 'A' + 10;
969 stub_unpack_int (buff
, fieldlength
)
978 nibble
= stubhex (*buff
++);
982 retval
= retval
<< 4;
988 unpack_varlen_hex (buff
, result
)
989 char *buff
; /* packet to parse */
995 while (ishex (*buff
, &nibble
))
998 retval
= retval
<< 4;
999 retval
|= nibble
& 0x0f;
1006 unpack_nibble (buf
, val
)
1010 ishex (*buf
++, val
);
1015 pack_nibble (buf
, nibble
)
1019 *buf
++ = hexchars
[(nibble
& 0x0f)];
1024 pack_hex_byte (pkt
, byte
)
1028 *pkt
++ = hexchars
[(byte
>> 4) & 0xf];
1029 *pkt
++ = hexchars
[(byte
& 0xf)];
1034 unpack_byte (buf
, value
)
1038 *value
= stub_unpack_int (buf
, 2);
1043 pack_int (buf
, value
)
1047 buf
= pack_hex_byte (buf
, (value
>> 24) & 0xff);
1048 buf
= pack_hex_byte (buf
, (value
>> 16) & 0xff);
1049 buf
= pack_hex_byte (buf
, (value
>> 8) & 0x0ff);
1050 buf
= pack_hex_byte (buf
, (value
& 0xff));
1055 unpack_int (buf
, value
)
1059 *value
= stub_unpack_int (buf
, 8);
1063 #if 0 /* currently unused, uncomment when needed */
1064 static char *pack_string
PARAMS ((char *pkt
, char *string
));
1067 pack_string (pkt
, string
)
1074 len
= strlen (string
);
1076 len
= 200; /* Bigger than most GDB packets, junk??? */
1077 pkt
= pack_hex_byte (pkt
, len
);
1081 if ((ch
== '\0') || (ch
== '#'))
1082 ch
= '*'; /* Protect encapsulation */
1087 #endif /* 0 (unused) */
1090 unpack_string (src
, dest
, length
)
1102 pack_threadid (pkt
, id
)
1107 unsigned char *altid
;
1109 altid
= (unsigned char *) id
;
1110 limit
= pkt
+ BUF_THREAD_ID_SIZE
;
1112 pkt
= pack_hex_byte (pkt
, *altid
++);
1118 unpack_threadid (inbuf
, id
)
1123 char *limit
= inbuf
+ BUF_THREAD_ID_SIZE
;
1126 altref
= (char *) id
;
1128 while (inbuf
< limit
)
1130 x
= stubhex (*inbuf
++);
1131 y
= stubhex (*inbuf
++);
1132 *altref
++ = (x
<< 4) | y
;
1137 /* Externally, threadrefs are 64 bits but internally, they are still
1138 ints. This is due to a mismatch of specifications. We would like
1139 to use 64bit thread references internally. This is an adapter
1143 int_to_threadref (id
, value
)
1147 unsigned char *scan
;
1149 scan
= (unsigned char *) id
;
1155 *scan
++ = (value
>> 24) & 0xff;
1156 *scan
++ = (value
>> 16) & 0xff;
1157 *scan
++ = (value
>> 8) & 0xff;
1158 *scan
++ = (value
& 0xff);
1162 threadref_to_int (ref
)
1166 unsigned char *scan
;
1168 scan
= (char *) ref
;
1172 value
= (value
<< 8) | ((*scan
++) & 0xff);
1177 copy_threadref (dest
, src
)
1182 unsigned char *csrc
, *cdest
;
1184 csrc
= (unsigned char *) src
;
1185 cdest
= (unsigned char *) dest
;
1192 threadmatch (dest
, src
)
1196 /* things are broken right now, so just assume we got a match */
1198 unsigned char *srcp
, *destp
;
1200 srcp
= (char *) src
;
1201 destp
= (char *) dest
;
1205 result
&= (*srcp
++ == *destp
++) ? 1 : 0;
1212 threadid:1, # always request threadid
1219 /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */
1222 pack_threadinfo_request (pkt
, mode
, id
)
1227 *pkt
++ = 'q'; /* Info Query */
1228 *pkt
++ = 'P'; /* process or thread info */
1229 pkt
= pack_int (pkt
, mode
); /* mode */
1230 pkt
= pack_threadid (pkt
, id
); /* threadid */
1231 *pkt
= '\0'; /* terminate */
1235 /* These values tag the fields in a thread info response packet */
1236 /* Tagging the fields allows us to request specific fields and to
1237 add more fields as time goes by */
1239 #define TAG_THREADID 1 /* Echo the thread identifier */
1240 #define TAG_EXISTS 2 /* Is this process defined enough to
1241 fetch registers and its stack */
1242 #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */
1243 #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is */
1244 #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about
1248 remote_unpack_thread_info_response (pkt
, expectedref
, info
)
1250 threadref
*expectedref
;
1251 struct gdb_ext_thread_info
*info
;
1256 char *limit
= pkt
+ PBUFSIZ
; /* plausable parsing limit */
1259 /* info->threadid = 0; FIXME: implement zero_threadref */
1261 info
->display
[0] = '\0';
1262 info
->shortname
[0] = '\0';
1263 info
->more_display
[0] = '\0';
1265 /* Assume the characters indicating the packet type have been stripped */
1266 pkt
= unpack_int (pkt
, &mask
); /* arg mask */
1267 pkt
= unpack_threadid (pkt
, &ref
);
1270 warning ("Incomplete response to threadinfo request\n");
1271 if (!threadmatch (&ref
, expectedref
))
1272 { /* This is an answer to a different request */
1273 warning ("ERROR RMT Thread info mismatch\n");
1276 copy_threadref (&info
->threadid
, &ref
);
1278 /* Loop on tagged fields , try to bail if somthing goes wrong */
1280 while ((pkt
< limit
) && mask
&& *pkt
) /* packets are terminated with nulls */
1282 pkt
= unpack_int (pkt
, &tag
); /* tag */
1283 pkt
= unpack_byte (pkt
, &length
); /* length */
1284 if (!(tag
& mask
)) /* tags out of synch with mask */
1286 warning ("ERROR RMT: threadinfo tag mismatch\n");
1290 if (tag
== TAG_THREADID
)
1294 warning ("ERROR RMT: length of threadid is not 16\n");
1298 pkt
= unpack_threadid (pkt
, &ref
);
1299 mask
= mask
& ~TAG_THREADID
;
1302 if (tag
== TAG_EXISTS
)
1304 info
->active
= stub_unpack_int (pkt
, length
);
1306 mask
= mask
& ~(TAG_EXISTS
);
1309 warning ("ERROR RMT: 'exists' length too long\n");
1315 if (tag
== TAG_THREADNAME
)
1317 pkt
= unpack_string (pkt
, &info
->shortname
[0], length
);
1318 mask
= mask
& ~TAG_THREADNAME
;
1321 if (tag
== TAG_DISPLAY
)
1323 pkt
= unpack_string (pkt
, &info
->display
[0], length
);
1324 mask
= mask
& ~TAG_DISPLAY
;
1327 if (tag
== TAG_MOREDISPLAY
)
1329 pkt
= unpack_string (pkt
, &info
->more_display
[0], length
);
1330 mask
= mask
& ~TAG_MOREDISPLAY
;
1333 warning ("ERROR RMT: unknown thread info tag\n");
1334 break; /* Not a tag we know about */
1340 remote_get_threadinfo (threadid
, fieldset
, info
)
1341 threadref
*threadid
;
1342 int fieldset
; /* TAG mask */
1343 struct gdb_ext_thread_info
*info
;
1346 char *threadinfo_pkt
= alloca (PBUFSIZ
);
1348 pack_threadinfo_request (threadinfo_pkt
, fieldset
, threadid
);
1349 putpkt (threadinfo_pkt
);
1350 getpkt (threadinfo_pkt
, PBUFSIZ
, 0);
1351 result
= remote_unpack_thread_info_response (threadinfo_pkt
+ 2, threadid
,
1356 /* Unfortunately, 61 bit thread-ids are bigger than the internal
1357 representation of a threadid. */
1360 adapt_remote_get_threadinfo (ref
, selection
, info
)
1363 struct gdb_ext_thread_info
*info
;
1367 int_to_threadref (&lclref
, *ref
);
1368 return remote_get_threadinfo (&lclref
, selection
, info
);
1371 /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */
1374 pack_threadlist_request (pkt
, startflag
, threadcount
, nextthread
)
1378 threadref
*nextthread
;
1380 *pkt
++ = 'q'; /* info query packet */
1381 *pkt
++ = 'L'; /* Process LIST or threadLIST request */
1382 pkt
= pack_nibble (pkt
, startflag
); /* initflag 1 bytes */
1383 pkt
= pack_hex_byte (pkt
, threadcount
); /* threadcount 2 bytes */
1384 pkt
= pack_threadid (pkt
, nextthread
); /* 64 bit thread identifier */
1389 /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */
1392 parse_threadlist_response (pkt
, result_limit
, original_echo
, resultlist
,
1396 threadref
*original_echo
;
1397 threadref
*resultlist
;
1401 int count
, resultcount
, done
;
1404 /* Assume the 'q' and 'M chars have been stripped. */
1405 limit
= pkt
+ (PBUFSIZ
- BUF_THREAD_ID_SIZE
); /* done parse past here */
1406 pkt
= unpack_byte (pkt
, &count
); /* count field */
1407 pkt
= unpack_nibble (pkt
, &done
);
1408 /* The first threadid is the argument threadid. */
1409 pkt
= unpack_threadid (pkt
, original_echo
); /* should match query packet */
1410 while ((count
-- > 0) && (pkt
< limit
))
1412 pkt
= unpack_threadid (pkt
, resultlist
++);
1413 if (resultcount
++ >= result_limit
)
1422 remote_get_threadlist (startflag
, nextthread
, result_limit
,
1423 done
, result_count
, threadlist
)
1425 threadref
*nextthread
;
1429 threadref
*threadlist
;
1432 static threadref echo_nextthread
;
1433 char *threadlist_packet
= alloca (PBUFSIZ
);
1434 char *t_response
= alloca (PBUFSIZ
);
1437 /* Trancate result limit to be smaller than the packet size */
1438 if ((((result_limit
+ 1) * BUF_THREAD_ID_SIZE
) + 10) >= PBUFSIZ
)
1439 result_limit
= (PBUFSIZ
/ BUF_THREAD_ID_SIZE
) - 2;
1441 pack_threadlist_request (threadlist_packet
,
1442 startflag
, result_limit
, nextthread
);
1443 putpkt (threadlist_packet
);
1444 getpkt (t_response
, PBUFSIZ
, 0);
1447 parse_threadlist_response (t_response
+ 2, result_limit
, &echo_nextthread
,
1450 if (!threadmatch (&echo_nextthread
, nextthread
))
1452 /* FIXME: This is a good reason to drop the packet */
1453 /* Possably, there is a duplicate response */
1455 retransmit immediatly - race conditions
1456 retransmit after timeout - yes
1458 wait for packet, then exit
1460 warning ("HMM: threadlist did not echo arg thread, dropping it\n");
1461 return 0; /* I choose simply exiting */
1463 if (*result_count
<= 0)
1467 warning ("RMT ERROR : failed to get remote thread list\n");
1470 return result
; /* break; */
1472 if (*result_count
> result_limit
)
1475 warning ("RMT ERROR: threadlist response longer than requested\n");
1481 /* This is the interface between remote and threads, remotes upper interface */
1483 /* remote_find_new_threads retrieves the thread list and for each
1484 thread in the list, looks up the thread in GDB's internal list,
1485 ading the thread if it does not already exist. This involves
1486 getting partial thread lists from the remote target so, polling the
1487 quit_flag is required. */
1490 /* About this many threadisds fit in a packet. */
1492 #define MAXTHREADLISTRESULTS 32
1495 remote_threadlist_iterator (stepfunction
, context
, looplimit
)
1496 rmt_thread_action stepfunction
;
1500 int done
, i
, result_count
;
1504 static threadref nextthread
;
1505 static threadref resultthreadlist
[MAXTHREADLISTRESULTS
];
1510 if (loopcount
++ > looplimit
)
1513 warning ("Remote fetch threadlist -infinite loop-\n");
1516 if (!remote_get_threadlist (startflag
, &nextthread
, MAXTHREADLISTRESULTS
,
1517 &done
, &result_count
, resultthreadlist
))
1522 /* clear for later iterations */
1524 /* Setup to resume next batch of thread references, set nextthread. */
1525 if (result_count
>= 1)
1526 copy_threadref (&nextthread
, &resultthreadlist
[result_count
- 1]);
1528 while (result_count
--)
1529 if (!(result
= (*stepfunction
) (&resultthreadlist
[i
++], context
)))
1536 remote_newthread_step (ref
, context
)
1542 pid
= threadref_to_int (ref
);
1543 if (!in_thread_list (pid
))
1545 return 1; /* continue iterator */
1548 #define CRAZY_MAX_THREADS 1000
1551 remote_current_thread (oldpid
)
1554 char *buf
= alloca (PBUFSIZ
);
1557 getpkt (buf
, PBUFSIZ
, 0);
1558 if (buf
[0] == 'Q' && buf
[1] == 'C')
1559 return strtol (&buf
[2], NULL
, 16);
1564 /* Find new threads for info threads command. */
1567 remote_find_new_threads ()
1569 remote_threadlist_iterator (remote_newthread_step
, 0,
1571 if (inferior_pid
== MAGIC_NULL_PID
) /* ack ack ack */
1572 inferior_pid
= remote_current_thread (inferior_pid
);
1576 remote_threads_info (void)
1578 char *buf
= alloca (PBUFSIZ
);
1582 if (remote_desc
== 0) /* paranoia */
1583 error ("Command can only be used when connected to the remote target.");
1585 putpkt ("qfThreadInfo");
1587 getpkt (bufp
, PBUFSIZ
, 0);
1588 if (bufp
[0] == '\0') /* q packet not recognized! */
1589 { /* try old jmetzler method */
1590 remote_find_new_threads ();
1593 else /* try new 'q' method */
1594 while (*bufp
++ == 'm') /* reply contains one or more TID */
1598 tid
= strtol (bufp
, &bufp
, 16);
1599 if (tid
!= 0 && !in_thread_list (tid
))
1602 while (*bufp
++ == ','); /* comma-separated list */
1603 putpkt ("qsThreadInfo");
1605 getpkt (bufp
, PBUFSIZ
, 0);
1610 /* Restart the remote side; this is an extended protocol operation. */
1613 extended_remote_restart ()
1615 char *buf
= alloca (PBUFSIZ
);
1617 /* Send the restart command; for reasons I don't understand the
1618 remote side really expects a number after the "R". */
1620 sprintf (&buf
[1], "%x", 0);
1623 /* Now query for status so this looks just like we restarted
1624 gdbserver from scratch. */
1626 getpkt (buf
, PBUFSIZ
, 0);
1629 /* Clean up connection to a remote debugger. */
1633 remote_close (quitting
)
1637 SERIAL_CLOSE (remote_desc
);
1641 /* Query the remote side for the text, data and bss offsets. */
1646 char *buf
= alloca (PBUFSIZ
);
1649 CORE_ADDR text_addr
, data_addr
, bss_addr
;
1650 struct section_offsets
*offs
;
1652 putpkt ("qOffsets");
1654 getpkt (buf
, PBUFSIZ
, 0);
1656 if (buf
[0] == '\000')
1657 return; /* Return silently. Stub doesn't support
1661 warning ("Remote failure reply: %s", buf
);
1665 /* Pick up each field in turn. This used to be done with scanf, but
1666 scanf will make trouble if CORE_ADDR size doesn't match
1667 conversion directives correctly. The following code will work
1668 with any size of CORE_ADDR. */
1669 text_addr
= data_addr
= bss_addr
= 0;
1673 if (strncmp (ptr
, "Text=", 5) == 0)
1676 /* Don't use strtol, could lose on big values. */
1677 while (*ptr
&& *ptr
!= ';')
1678 text_addr
= (text_addr
<< 4) + fromhex (*ptr
++);
1683 if (!lose
&& strncmp (ptr
, ";Data=", 6) == 0)
1686 while (*ptr
&& *ptr
!= ';')
1687 data_addr
= (data_addr
<< 4) + fromhex (*ptr
++);
1692 if (!lose
&& strncmp (ptr
, ";Bss=", 5) == 0)
1695 while (*ptr
&& *ptr
!= ';')
1696 bss_addr
= (bss_addr
<< 4) + fromhex (*ptr
++);
1702 error ("Malformed response to offset query, %s", buf
);
1704 if (symfile_objfile
== NULL
)
1707 offs
= (struct section_offsets
*) alloca (SIZEOF_SECTION_OFFSETS
);
1708 memcpy (offs
, symfile_objfile
->section_offsets
, SIZEOF_SECTION_OFFSETS
);
1710 ANOFFSET (offs
, SECT_OFF_TEXT
) = text_addr
;
1712 /* This is a temporary kludge to force data and bss to use the same offsets
1713 because that's what nlmconv does now. The real solution requires changes
1714 to the stub and remote.c that I don't have time to do right now. */
1716 ANOFFSET (offs
, SECT_OFF_DATA
) = data_addr
;
1717 ANOFFSET (offs
, SECT_OFF_BSS
) = data_addr
;
1719 objfile_relocate (symfile_objfile
, offs
);
1723 * Cisco version of section offsets:
1725 * Instead of having GDB query the target for the section offsets,
1726 * Cisco lets the target volunteer the information! It's also in
1727 * a different format, so here are the functions that will decode
1728 * a section offset packet from a Cisco target.
1732 * Function: remote_cisco_section_offsets
1734 * Returns: zero for success, non-zero for failure
1738 remote_cisco_section_offsets (bfd_vma text_addr
,
1741 bfd_signed_vma
*text_offs
,
1742 bfd_signed_vma
*data_offs
,
1743 bfd_signed_vma
*bss_offs
)
1745 bfd_vma text_base
, data_base
, bss_base
;
1746 struct minimal_symbol
*start
;
1752 if (symfile_objfile
== NULL
)
1753 return -1; /* no can do nothin' */
1755 start
= lookup_minimal_symbol ("_start", NULL
, NULL
);
1757 return -1; /* Can't find "_start" symbol */
1759 data_base
= bss_base
= 0;
1760 text_base
= SYMBOL_VALUE_ADDRESS (start
);
1762 abfd
= symfile_objfile
->obfd
;
1763 for (sect
= abfd
->sections
;
1767 p
= (unsigned char *) bfd_get_section_name (abfd
, sect
);
1769 if (strcmp (p
+ len
- 4, "data") == 0) /* ends in "data" */
1770 if (data_base
== 0 ||
1771 data_base
> bfd_get_section_vma (abfd
, sect
))
1772 data_base
= bfd_get_section_vma (abfd
, sect
);
1773 if (strcmp (p
+ len
- 3, "bss") == 0) /* ends in "bss" */
1774 if (bss_base
== 0 ||
1775 bss_base
> bfd_get_section_vma (abfd
, sect
))
1776 bss_base
= bfd_get_section_vma (abfd
, sect
);
1778 *text_offs
= text_addr
- text_base
;
1779 *data_offs
= data_addr
- data_base
;
1780 *bss_offs
= bss_addr
- bss_base
;
1785 sprintf (tmp
, "VMA: text = 0x");
1786 sprintf_vma (tmp
+ strlen (tmp
), text_addr
);
1787 sprintf (tmp
+ strlen (tmp
), " data = 0x");
1788 sprintf_vma (tmp
+ strlen (tmp
), data_addr
);
1789 sprintf (tmp
+ strlen (tmp
), " bss = 0x");
1790 sprintf_vma (tmp
+ strlen (tmp
), bss_addr
);
1791 fprintf_filtered (gdb_stdlog
, tmp
);
1792 fprintf_filtered (gdb_stdlog
,
1793 "Reloc offset: text = 0x%s data = 0x%s bss = 0x%s\n",
1794 paddr_nz (*text_offs
),
1795 paddr_nz (*data_offs
),
1796 paddr_nz (*bss_offs
));
1803 * Function: remote_cisco_objfile_relocate
1805 * Relocate the symbol file for a remote target.
1809 remote_cisco_objfile_relocate (text_off
, data_off
, bss_off
)
1810 bfd_signed_vma text_off
;
1811 bfd_signed_vma data_off
;
1812 bfd_signed_vma bss_off
;
1814 struct section_offsets
*offs
;
1816 if (text_off
!= 0 || data_off
!= 0 || bss_off
!= 0)
1818 /* FIXME: This code assumes gdb-stabs.h is being used; it's
1819 broken for xcoff, dwarf, sdb-coff, etc. But there is no
1820 simple canonical representation for this stuff. */
1822 offs
= (struct section_offsets
*) alloca (SIZEOF_SECTION_OFFSETS
);
1823 memcpy (offs
, symfile_objfile
->section_offsets
, SIZEOF_SECTION_OFFSETS
);
1825 ANOFFSET (offs
, SECT_OFF_TEXT
) = text_off
;
1826 ANOFFSET (offs
, SECT_OFF_DATA
) = data_off
;
1827 ANOFFSET (offs
, SECT_OFF_BSS
) = bss_off
;
1829 /* First call the standard objfile_relocate. */
1830 objfile_relocate (symfile_objfile
, offs
);
1832 /* Now we need to fix up the section entries already attached to
1833 the exec target. These entries will control memory transfers
1834 from the exec file. */
1836 exec_set_section_offsets (text_off
, data_off
, bss_off
);
1840 /* Stub for catch_errors. */
1843 remote_start_remote_dummy (void *dummy
)
1845 start_remote (); /* Initialize gdb process mechanisms */
1850 remote_start_remote (dummy
)
1853 immediate_quit
= 1; /* Allow user to interrupt it */
1855 /* Ack any packet which the remote side has already sent. */
1856 SERIAL_WRITE (remote_desc
, "+", 1);
1858 /* Let the stub know that we want it to return the thread. */
1861 inferior_pid
= remote_current_thread (inferior_pid
);
1863 get_offsets (); /* Get text, data & bss offsets */
1865 putpkt ("?"); /* initiate a query from remote machine */
1868 return remote_start_remote_dummy (dummy
);
1871 /* Open a connection to a remote debugger.
1872 NAME is the filename used for communication. */
1875 remote_open (name
, from_tty
)
1879 remote_open_1 (name
, from_tty
, &remote_ops
, 0);
1882 /* Just like remote_open, but with asynchronous support. */
1884 remote_async_open (name
, from_tty
)
1888 remote_async_open_1 (name
, from_tty
, &remote_async_ops
, 0);
1891 /* Open a connection to a remote debugger using the extended
1892 remote gdb protocol. NAME is the filename used for communication. */
1895 extended_remote_open (name
, from_tty
)
1899 remote_open_1 (name
, from_tty
, &extended_remote_ops
, 1 /*extended_p */ );
1902 /* Just like extended_remote_open, but with asynchronous support. */
1904 extended_remote_async_open (name
, from_tty
)
1908 remote_async_open_1 (name
, from_tty
, &extended_async_remote_ops
, 1 /*extended_p */ );
1911 /* Generic code for opening a connection to a remote target. */
1913 static DCACHE
*remote_dcache
;
1916 remote_open_1 (name
, from_tty
, target
, extended_p
)
1919 struct target_ops
*target
;
1923 error ("To open a remote debug connection, you need to specify what\n\
1924 serial device is attached to the remote system (e.g. /dev/ttya).");
1926 /* See FIXME above */
1927 wait_forever_enabled_p
= 1;
1929 target_preopen (from_tty
);
1931 unpush_target (target
);
1933 remote_dcache
= dcache_init (remote_read_bytes
, remote_write_bytes
);
1935 remote_desc
= SERIAL_OPEN (name
);
1937 perror_with_name (name
);
1939 if (baud_rate
!= -1)
1941 if (SERIAL_SETBAUDRATE (remote_desc
, baud_rate
))
1943 SERIAL_CLOSE (remote_desc
);
1944 perror_with_name (name
);
1948 SERIAL_RAW (remote_desc
);
1950 /* If there is something sitting in the buffer we might take it as a
1951 response to a command, which would be bad. */
1952 SERIAL_FLUSH_INPUT (remote_desc
);
1956 puts_filtered ("Remote debugging using ");
1957 puts_filtered (name
);
1958 puts_filtered ("\n");
1960 push_target (target
); /* Switch to using remote target now */
1962 init_packet_config (&remote_protocol_P
);
1963 init_packet_config (&remote_protocol_Z
);
1965 general_thread
= -2;
1966 continue_thread
= -2;
1968 /* Force remote_write_bytes to check whether target supports
1969 binary downloading. */
1970 init_packet_config (&remote_protocol_binary_download
);
1972 /* Without this, some commands which require an active target (such
1973 as kill) won't work. This variable serves (at least) double duty
1974 as both the pid of the target process (if it has such), and as a
1975 flag indicating that a target is active. These functions should
1976 be split out into seperate variables, especially since GDB will
1977 someday have a notion of debugging several processes. */
1979 inferior_pid
= MAGIC_NULL_PID
;
1980 /* Start the remote connection; if error (0), discard this target.
1981 In particular, if the user quits, be sure to discard it
1982 (we'd be in an inconsistent state otherwise). */
1983 if (!catch_errors (remote_start_remote
, NULL
,
1984 "Couldn't establish connection to remote target\n",
1993 /* tell the remote that we're using the extended protocol. */
1994 char *buf
= alloca (PBUFSIZ
);
1996 getpkt (buf
, PBUFSIZ
, 0);
2000 /* Just like remote_open but with asynchronous support. */
2002 remote_async_open_1 (name
, from_tty
, target
, extended_p
)
2005 struct target_ops
*target
;
2009 error ("To open a remote debug connection, you need to specify what\n\
2010 serial device is attached to the remote system (e.g. /dev/ttya).");
2012 target_preopen (from_tty
);
2014 unpush_target (target
);
2016 remote_dcache
= dcache_init (remote_read_bytes
, remote_write_bytes
);
2018 remote_desc
= SERIAL_OPEN (name
);
2020 perror_with_name (name
);
2022 if (baud_rate
!= -1)
2024 if (SERIAL_SETBAUDRATE (remote_desc
, baud_rate
))
2026 SERIAL_CLOSE (remote_desc
);
2027 perror_with_name (name
);
2031 SERIAL_RAW (remote_desc
);
2033 /* If there is something sitting in the buffer we might take it as a
2034 response to a command, which would be bad. */
2035 SERIAL_FLUSH_INPUT (remote_desc
);
2039 puts_filtered ("Remote debugging using ");
2040 puts_filtered (name
);
2041 puts_filtered ("\n");
2044 push_target (target
); /* Switch to using remote target now */
2046 init_packet_config (&remote_protocol_P
);
2047 init_packet_config (&remote_protocol_Z
);
2049 general_thread
= -2;
2050 continue_thread
= -2;
2052 /* Force remote_write_bytes to check whether target supports
2053 binary downloading. */
2054 init_packet_config (&remote_protocol_binary_download
);
2056 /* Without this, some commands which require an active target (such
2057 as kill) won't work. This variable serves (at least) double duty
2058 as both the pid of the target process (if it has such), and as a
2059 flag indicating that a target is active. These functions should
2060 be split out into seperate variables, especially since GDB will
2061 someday have a notion of debugging several processes. */
2062 inferior_pid
= MAGIC_NULL_PID
;
2064 /* With this target we start out by owning the terminal. */
2065 remote_async_terminal_ours_p
= 1;
2067 /* FIXME: cagney/1999-09-23: During the initial connection it is
2068 assumed that the target is already ready and able to respond to
2069 requests. Unfortunatly remote_start_remote() eventually calls
2070 wait_for_inferior() with no timeout. wait_forever_enabled_p gets
2071 around this. Eventually a mechanism that allows
2072 wait_for_inferior() to expect/get timeouts will be
2074 wait_forever_enabled_p
= 0;
2076 /* Start the remote connection; if error (0), discard this target.
2077 In particular, if the user quits, be sure to discard it
2078 (we'd be in an inconsistent state otherwise). */
2079 if (!catch_errors (remote_start_remote
, NULL
,
2080 "Couldn't establish connection to remote target\n",
2084 wait_forever_enabled_p
= 1;
2088 wait_forever_enabled_p
= 1;
2092 /* tell the remote that we're using the extended protocol. */
2093 char *buf
= alloca (PBUFSIZ
);
2095 getpkt (buf
, PBUFSIZ
, 0);
2099 /* This takes a program previously attached to and detaches it. After
2100 this is done, GDB can be used to debug some other program. We
2101 better not have left any breakpoints in the target program or it'll
2102 die when it hits one. */
2105 remote_detach (args
, from_tty
)
2109 char *buf
= alloca (PBUFSIZ
);
2112 error ("Argument given to \"detach\" when remotely debugging.");
2114 /* Tell the remote target to detach. */
2116 remote_send (buf
, PBUFSIZ
);
2120 puts_filtered ("Ending remote debugging.\n");
2124 /* Same as remote_detach, but with async support. */
2126 remote_async_detach (args
, from_tty
)
2130 char *buf
= alloca (PBUFSIZ
);
2133 error ("Argument given to \"detach\" when remotely debugging.");
2135 /* Tell the remote target to detach. */
2137 remote_send (buf
, PBUFSIZ
);
2139 /* Unregister the file descriptor from the event loop. */
2140 if (target_is_async_p ())
2141 SERIAL_ASYNC (remote_desc
, NULL
, 0);
2145 puts_filtered ("Ending remote debugging.\n");
2148 /* Convert hex digit A to a number. */
2154 if (a
>= '0' && a
<= '9')
2156 else if (a
>= 'a' && a
<= 'f')
2157 return a
- 'a' + 10;
2158 else if (a
>= 'A' && a
<= 'F')
2159 return a
- 'A' + 10;
2161 error ("Reply contains invalid hex digit %d", a
);
2164 /* Convert number NIB to a hex digit. */
2173 return 'a' + nib
- 10;
2176 /* Tell the remote machine to resume. */
2178 static enum target_signal last_sent_signal
= TARGET_SIGNAL_0
;
2180 static int last_sent_step
;
2183 remote_resume (pid
, step
, siggnal
)
2185 enum target_signal siggnal
;
2187 char *buf
= alloca (PBUFSIZ
);
2190 set_thread (0, 0); /* run any thread */
2192 set_thread (pid
, 0); /* run this thread */
2194 dcache_flush (remote_dcache
);
2196 last_sent_signal
= siggnal
;
2197 last_sent_step
= step
;
2199 /* A hook for when we need to do something at the last moment before
2201 if (target_resume_hook
)
2202 (*target_resume_hook
) ();
2204 if (siggnal
!= TARGET_SIGNAL_0
)
2206 buf
[0] = step
? 'S' : 'C';
2207 buf
[1] = tohex (((int) siggnal
>> 4) & 0xf);
2208 buf
[2] = tohex ((int) siggnal
& 0xf);
2212 strcpy (buf
, step
? "s" : "c");
2217 /* Same as remote_resume, but with async support. */
2219 remote_async_resume (pid
, step
, siggnal
)
2221 enum target_signal siggnal
;
2223 char *buf
= alloca (PBUFSIZ
);
2226 set_thread (0, 0); /* run any thread */
2228 set_thread (pid
, 0); /* run this thread */
2230 dcache_flush (remote_dcache
);
2232 last_sent_signal
= siggnal
;
2233 last_sent_step
= step
;
2235 /* A hook for when we need to do something at the last moment before
2237 if (target_resume_hook
)
2238 (*target_resume_hook
) ();
2240 if (siggnal
!= TARGET_SIGNAL_0
)
2242 buf
[0] = step
? 'S' : 'C';
2243 buf
[1] = tohex (((int) siggnal
>> 4) & 0xf);
2244 buf
[2] = tohex ((int) siggnal
& 0xf);
2248 strcpy (buf
, step
? "s" : "c");
2250 /* We are about to start executing the inferior, let's register it
2251 with the event loop. NOTE: this is the one place where all the
2252 execution commands end up. We could alternatively do this in each
2253 of the execution commands in infcmd.c.*/
2254 /* FIXME: ezannoni 1999-09-28: We may need to move this out of here
2255 into infcmd.c in order to allow inferior function calls to work
2256 NOT asynchronously. */
2257 if (event_loop_p
&& target_can_async_p ())
2258 target_async (inferior_event_handler
, 0);
2259 /* Tell the world that the target is now executing. */
2260 /* FIXME: cagney/1999-09-23: Is it the targets responsibility to set
2261 this? Instead, should the client of target just assume (for
2262 async targets) that the target is going to start executing? Is
2263 this information already found in the continuation block? */
2264 if (target_is_async_p ())
2265 target_executing
= 1;
2270 /* Set up the signal handler for SIGINT, while the target is
2271 executing, ovewriting the 'regular' SIGINT signal handler. */
2273 initialize_sigint_signal_handler ()
2275 sigint_remote_token
=
2276 create_async_signal_handler (async_remote_interrupt
, NULL
);
2277 signal (SIGINT
, handle_remote_sigint
);
2280 /* Signal handler for SIGINT, while the target is executing. */
2282 handle_remote_sigint (sig
)
2285 signal (sig
, handle_remote_sigint_twice
);
2286 sigint_remote_twice_token
=
2287 create_async_signal_handler (async_remote_interrupt_twice
, NULL
);
2288 mark_async_signal_handler_wrapper (sigint_remote_token
);
2291 /* Signal handler for SIGINT, installed after SIGINT has already been
2292 sent once. It will take effect the second time that the user sends
2295 handle_remote_sigint_twice (sig
)
2298 signal (sig
, handle_sigint
);
2299 sigint_remote_twice_token
=
2300 create_async_signal_handler (inferior_event_handler_wrapper
, NULL
);
2301 mark_async_signal_handler_wrapper (sigint_remote_twice_token
);
2304 /* Perform the real interruption of the target execution, in response
2307 async_remote_interrupt (arg
)
2308 gdb_client_data arg
;
2311 fprintf_unfiltered (gdb_stdlog
, "remote_interrupt called\n");
2316 /* Perform interrupt, if the first attempt did not succeed. Just give
2317 up on the target alltogether. */
2319 async_remote_interrupt_twice (arg
)
2320 gdb_client_data arg
;
2323 fprintf_unfiltered (gdb_stdlog
, "remote_interrupt_twice called\n");
2324 /* Do something only if the target was not killed by the previous
2326 if (target_executing
)
2329 signal (SIGINT
, handle_remote_sigint
);
2333 /* Reinstall the usual SIGINT handlers, after the target has
2336 cleanup_sigint_signal_handler (void *dummy
)
2338 signal (SIGINT
, handle_sigint
);
2339 if (sigint_remote_twice_token
)
2340 delete_async_signal_handler ((struct async_signal_handler
**) & sigint_remote_twice_token
);
2341 if (sigint_remote_token
)
2342 delete_async_signal_handler ((struct async_signal_handler
**) & sigint_remote_token
);
2345 /* Send ^C to target to halt it. Target will respond, and send us a
2347 static void (*ofunc
) PARAMS ((int));
2349 /* The command line interface's stop routine. This function is installed
2350 as a signal handler for SIGINT. The first time a user requests a
2351 stop, we call remote_stop to send a break or ^C. If there is no
2352 response from the target (it didn't stop when the user requested it),
2353 we ask the user if he'd like to detach from the target. */
2355 remote_interrupt (signo
)
2358 /* If this doesn't work, try more severe steps. */
2359 signal (signo
, remote_interrupt_twice
);
2362 fprintf_unfiltered (gdb_stdlog
, "remote_interrupt called\n");
2367 /* The user typed ^C twice. */
2370 remote_interrupt_twice (signo
)
2373 signal (signo
, ofunc
);
2375 signal (signo
, remote_interrupt
);
2378 /* This is the generic stop called via the target vector. When a target
2379 interrupt is requested, either by the command line or the GUI, we
2380 will eventually end up here. */
2384 /* Send a break or a ^C, depending on user preference. */
2386 fprintf_unfiltered (gdb_stdlog
, "remote_stop called\n");
2389 SERIAL_SEND_BREAK (remote_desc
);
2391 SERIAL_WRITE (remote_desc
, "\003", 1);
2394 /* Ask the user what to do when an interrupt is received. */
2399 target_terminal_ours ();
2401 if (query ("Interrupted while waiting for the program.\n\
2402 Give up (and stop debugging it)? "))
2404 target_mourn_inferior ();
2405 return_to_top_level (RETURN_QUIT
);
2408 target_terminal_inferior ();
2411 /* Enable/disable target terminal ownership. Most targets can use
2412 terminal groups to control terminal ownership. Remote targets are
2413 different in that explicit transfer of ownership to/from GDB/target
2417 remote_async_terminal_inferior (void)
2419 /* FIXME: cagney/1999-09-27: Shouldn't need to test for
2420 sync_execution here. This function should only be called when
2421 GDB is resuming the inferior in the forground. A background
2422 resume (``run&'') should leave GDB in control of the terminal and
2423 consequently should not call this code. */
2424 if (!sync_execution
)
2426 /* FIXME: cagney/1999-09-27: Closely related to the above. Make
2427 calls target_terminal_*() idenpotent. The event-loop GDB talking
2428 to an asynchronous target with a synchronous command calls this
2429 function from both event-top.c and infrun.c/infcmd.c. Once GDB
2430 stops trying to transfer the terminal to the target when it
2431 shouldn't this guard can go away. */
2432 if (!remote_async_terminal_ours_p
)
2434 delete_file_handler (input_fd
);
2435 remote_async_terminal_ours_p
= 0;
2436 initialize_sigint_signal_handler ();
2437 /* NOTE: At this point we could also register our selves as the
2438 recipient of all input. Any characters typed could then be
2439 passed on down to the target. */
2443 remote_async_terminal_ours (void)
2445 /* See FIXME in remote_async_terminal_inferior. */
2446 if (!sync_execution
)
2448 /* See FIXME in remote_async_terminal_inferior. */
2449 if (remote_async_terminal_ours_p
)
2451 cleanup_sigint_signal_handler (NULL
);
2452 add_file_handler (input_fd
, stdin_event_handler
, 0);
2453 remote_async_terminal_ours_p
= 1;
2456 /* If nonzero, ignore the next kill. */
2461 remote_console_output (char *msg
)
2465 for (p
= msg
; p
[0] && p
[1]; p
+= 2)
2468 char c
= fromhex (p
[0]) * 16 + fromhex (p
[1]);
2471 fputs_unfiltered (tb
, gdb_stdtarg
);
2473 gdb_flush (gdb_stdtarg
);
2476 /* Wait until the remote machine stops, then return,
2477 storing status in STATUS just as `wait' would.
2478 Returns "pid", which in the case of a multi-threaded
2479 remote OS, is the thread-id. */
2482 remote_wait (pid
, status
)
2484 struct target_waitstatus
*status
;
2486 unsigned char *buf
= alloca (PBUFSIZ
);
2487 int thread_num
= -1;
2489 status
->kind
= TARGET_WAITKIND_EXITED
;
2490 status
->value
.integer
= 0;
2496 ofunc
= signal (SIGINT
, remote_interrupt
);
2497 getpkt (buf
, PBUFSIZ
, 1);
2498 signal (SIGINT
, ofunc
);
2500 /* This is a hook for when we need to do something (perhaps the
2501 collection of trace data) every time the target stops. */
2502 if (target_wait_loop_hook
)
2503 (*target_wait_loop_hook
) ();
2507 case 'E': /* Error of some sort */
2508 warning ("Remote failure reply: %s", buf
);
2510 case 'T': /* Status with PC, SP, FP, ... */
2514 char regs
[MAX_REGISTER_RAW_SIZE
];
2516 /* Expedited reply, containing Signal, {regno, reg} repeat */
2517 /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where
2519 n... = register number
2520 r... = register contents
2522 p
= &buf
[3]; /* after Txx */
2529 /* Read the register number */
2530 regno
= strtol ((const char *) p
, &p_temp
, 16);
2531 p1
= (unsigned char *) p_temp
;
2533 if (p1
== p
) /* No register number present here */
2535 p1
= (unsigned char *) strchr ((const char *) p
, ':');
2537 warning ("Malformed packet(a) (missing colon): %s\n\
2540 if (strncmp ((const char *) p
, "thread", p1
- p
) == 0)
2542 p_temp
= unpack_varlen_hex (++p1
, &thread_num
);
2543 record_currthread (thread_num
);
2544 p
= (unsigned char *) p_temp
;
2552 warning ("Malformed packet(b) (missing colon): %s\n\
2556 if (regno
>= NUM_REGS
)
2557 warning ("Remote sent bad register number %ld: %s\n\
2561 for (i
= 0; i
< REGISTER_RAW_SIZE (regno
); i
++)
2563 if (p
[0] == 0 || p
[1] == 0)
2564 warning ("Remote reply is too short: %s", buf
);
2565 regs
[i
] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
2568 supply_register (regno
, regs
);
2573 warning ("Remote register badly formatted: %s", buf
);
2574 warning (" here: %s", p
);
2579 case 'S': /* Old style status, just signal only */
2580 status
->kind
= TARGET_WAITKIND_STOPPED
;
2581 status
->value
.sig
= (enum target_signal
)
2582 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
2586 /* Export Cisco kernel mode as a convenience variable
2587 (so that it can be used in the GDB prompt if desired). */
2589 if (cisco_kernel_mode
== 1)
2590 set_internalvar (lookup_internalvar ("cisco_kernel_mode"),
2591 value_from_string ("PDEBUG-"));
2592 cisco_kernel_mode
= 0;
2593 thread_num
= strtol ((const char *) &buf
[4], NULL
, 16);
2594 record_currthread (thread_num
);
2596 else if (buf
[3] == 'k')
2598 /* Export Cisco kernel mode as a convenience variable
2599 (so that it can be used in the GDB prompt if desired). */
2601 if (cisco_kernel_mode
== 1)
2602 set_internalvar (lookup_internalvar ("cisco_kernel_mode"),
2603 value_from_string ("KDEBUG-"));
2604 cisco_kernel_mode
= 1;
2607 case 'N': /* Cisco special: status and offsets */
2609 bfd_vma text_addr
, data_addr
, bss_addr
;
2610 bfd_signed_vma text_off
, data_off
, bss_off
;
2613 status
->kind
= TARGET_WAITKIND_STOPPED
;
2614 status
->value
.sig
= (enum target_signal
)
2615 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
2617 if (symfile_objfile
== NULL
)
2619 warning ("Relocation packet received with no symbol file. \
2624 /* Relocate object file. Buffer format is NAATT;DD;BB
2625 * where AA is the signal number, TT is the new text
2626 * address, DD * is the new data address, and BB is the
2627 * new bss address. */
2630 text_addr
= strtoul (p
, (char **) &p1
, 16);
2631 if (p1
== p
|| *p1
!= ';')
2632 warning ("Malformed relocation packet: Packet '%s'", buf
);
2634 data_addr
= strtoul (p
, (char **) &p1
, 16);
2635 if (p1
== p
|| *p1
!= ';')
2636 warning ("Malformed relocation packet: Packet '%s'", buf
);
2638 bss_addr
= strtoul (p
, (char **) &p1
, 16);
2640 warning ("Malformed relocation packet: Packet '%s'", buf
);
2642 if (remote_cisco_section_offsets (text_addr
, data_addr
, bss_addr
,
2643 &text_off
, &data_off
, &bss_off
)
2645 if (text_off
!= 0 || data_off
!= 0 || bss_off
!= 0)
2646 remote_cisco_objfile_relocate (text_off
, data_off
, bss_off
);
2650 case 'W': /* Target exited */
2652 /* The remote process exited. */
2653 status
->kind
= TARGET_WAITKIND_EXITED
;
2654 status
->value
.integer
= (fromhex (buf
[1]) << 4) + fromhex (buf
[2]);
2658 status
->kind
= TARGET_WAITKIND_SIGNALLED
;
2659 status
->value
.sig
= (enum target_signal
)
2660 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
2664 case 'O': /* Console output */
2665 remote_console_output (buf
+ 1);
2668 if (last_sent_signal
!= TARGET_SIGNAL_0
)
2670 /* Zero length reply means that we tried 'S' or 'C' and
2671 the remote system doesn't support it. */
2672 target_terminal_ours_for_output ();
2674 ("Can't send signals to this remote system. %s not sent.\n",
2675 target_signal_to_name (last_sent_signal
));
2676 last_sent_signal
= TARGET_SIGNAL_0
;
2677 target_terminal_inferior ();
2679 strcpy ((char *) buf
, last_sent_step
? "s" : "c");
2680 putpkt ((char *) buf
);
2683 /* else fallthrough */
2685 warning ("Invalid remote reply: %s", buf
);
2690 if (thread_num
!= -1)
2694 return inferior_pid
;
2697 /* Async version of remote_wait. */
2699 remote_async_wait (pid
, status
)
2701 struct target_waitstatus
*status
;
2703 unsigned char *buf
= alloca (PBUFSIZ
);
2704 int thread_num
= -1;
2706 status
->kind
= TARGET_WAITKIND_EXITED
;
2707 status
->value
.integer
= 0;
2713 if (!target_is_async_p ())
2714 ofunc
= signal (SIGINT
, remote_interrupt
);
2715 /* FIXME: cagney/1999-09-27: If we're in async mode we should
2716 _never_ wait for ever -> test on target_is_async_p().
2717 However, before we do that we need to ensure that the caller
2718 knows how to take the target into/out of async mode. */
2719 getpkt (buf
, PBUFSIZ
, wait_forever_enabled_p
);
2720 if (!target_is_async_p ())
2721 signal (SIGINT
, ofunc
);
2723 /* This is a hook for when we need to do something (perhaps the
2724 collection of trace data) every time the target stops. */
2725 if (target_wait_loop_hook
)
2726 (*target_wait_loop_hook
) ();
2730 case 'E': /* Error of some sort */
2731 warning ("Remote failure reply: %s", buf
);
2733 case 'T': /* Status with PC, SP, FP, ... */
2737 char regs
[MAX_REGISTER_RAW_SIZE
];
2739 /* Expedited reply, containing Signal, {regno, reg} repeat */
2740 /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where
2742 n... = register number
2743 r... = register contents
2745 p
= &buf
[3]; /* after Txx */
2752 /* Read the register number */
2753 regno
= strtol ((const char *) p
, &p_temp
, 16);
2754 p1
= (unsigned char *) p_temp
;
2756 if (p1
== p
) /* No register number present here */
2758 p1
= (unsigned char *) strchr ((const char *) p
, ':');
2760 warning ("Malformed packet(a) (missing colon): %s\n\
2763 if (strncmp ((const char *) p
, "thread", p1
- p
) == 0)
2765 p_temp
= unpack_varlen_hex (++p1
, &thread_num
);
2766 record_currthread (thread_num
);
2767 p
= (unsigned char *) p_temp
;
2775 warning ("Malformed packet(b) (missing colon): %s\n\
2779 if (regno
>= NUM_REGS
)
2780 warning ("Remote sent bad register number %ld: %s\n\
2784 for (i
= 0; i
< REGISTER_RAW_SIZE (regno
); i
++)
2786 if (p
[0] == 0 || p
[1] == 0)
2787 warning ("Remote reply is too short: %s", buf
);
2788 regs
[i
] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
2791 supply_register (regno
, regs
);
2796 warning ("Remote register badly formatted: %s", buf
);
2797 warning (" here: %s", p
);
2802 case 'S': /* Old style status, just signal only */
2803 status
->kind
= TARGET_WAITKIND_STOPPED
;
2804 status
->value
.sig
= (enum target_signal
)
2805 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
2809 /* Export Cisco kernel mode as a convenience variable
2810 (so that it can be used in the GDB prompt if desired). */
2812 if (cisco_kernel_mode
== 1)
2813 set_internalvar (lookup_internalvar ("cisco_kernel_mode"),
2814 value_from_string ("PDEBUG-"));
2815 cisco_kernel_mode
= 0;
2816 thread_num
= strtol ((const char *) &buf
[4], NULL
, 16);
2817 record_currthread (thread_num
);
2819 else if (buf
[3] == 'k')
2821 /* Export Cisco kernel mode as a convenience variable
2822 (so that it can be used in the GDB prompt if desired). */
2824 if (cisco_kernel_mode
== 1)
2825 set_internalvar (lookup_internalvar ("cisco_kernel_mode"),
2826 value_from_string ("KDEBUG-"));
2827 cisco_kernel_mode
= 1;
2830 case 'N': /* Cisco special: status and offsets */
2832 bfd_vma text_addr
, data_addr
, bss_addr
;
2833 bfd_signed_vma text_off
, data_off
, bss_off
;
2836 status
->kind
= TARGET_WAITKIND_STOPPED
;
2837 status
->value
.sig
= (enum target_signal
)
2838 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
2840 if (symfile_objfile
== NULL
)
2842 warning ("Relocation packet recieved with no symbol file. \
2847 /* Relocate object file. Buffer format is NAATT;DD;BB
2848 * where AA is the signal number, TT is the new text
2849 * address, DD * is the new data address, and BB is the
2850 * new bss address. */
2853 text_addr
= strtoul (p
, (char **) &p1
, 16);
2854 if (p1
== p
|| *p1
!= ';')
2855 warning ("Malformed relocation packet: Packet '%s'", buf
);
2857 data_addr
= strtoul (p
, (char **) &p1
, 16);
2858 if (p1
== p
|| *p1
!= ';')
2859 warning ("Malformed relocation packet: Packet '%s'", buf
);
2861 bss_addr
= strtoul (p
, (char **) &p1
, 16);
2863 warning ("Malformed relocation packet: Packet '%s'", buf
);
2865 if (remote_cisco_section_offsets (text_addr
, data_addr
, bss_addr
,
2866 &text_off
, &data_off
, &bss_off
)
2868 if (text_off
!= 0 || data_off
!= 0 || bss_off
!= 0)
2869 remote_cisco_objfile_relocate (text_off
, data_off
, bss_off
);
2873 case 'W': /* Target exited */
2875 /* The remote process exited. */
2876 status
->kind
= TARGET_WAITKIND_EXITED
;
2877 status
->value
.integer
= (fromhex (buf
[1]) << 4) + fromhex (buf
[2]);
2881 status
->kind
= TARGET_WAITKIND_SIGNALLED
;
2882 status
->value
.sig
= (enum target_signal
)
2883 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
2887 case 'O': /* Console output */
2888 remote_console_output (buf
+ 1);
2889 /* Return immediately to the event loop. The event loop will
2890 still be waiting on the inferior afterwards. */
2891 status
->kind
= TARGET_WAITKIND_IGNORE
;
2894 if (last_sent_signal
!= TARGET_SIGNAL_0
)
2896 /* Zero length reply means that we tried 'S' or 'C' and
2897 the remote system doesn't support it. */
2898 target_terminal_ours_for_output ();
2900 ("Can't send signals to this remote system. %s not sent.\n",
2901 target_signal_to_name (last_sent_signal
));
2902 last_sent_signal
= TARGET_SIGNAL_0
;
2903 target_terminal_inferior ();
2905 strcpy ((char *) buf
, last_sent_step
? "s" : "c");
2906 putpkt ((char *) buf
);
2909 /* else fallthrough */
2911 warning ("Invalid remote reply: %s", buf
);
2916 if (thread_num
!= -1)
2920 return inferior_pid
;
2923 /* Number of bytes of registers this stub implements. */
2925 static int register_bytes_found
;
2927 /* Read the remote registers into the block REGS. */
2928 /* Currently we just read all the registers, so we don't use regno. */
2932 remote_fetch_registers (regno
)
2935 char *buf
= alloca (PBUFSIZ
);
2938 char regs
[REGISTER_BYTES
];
2940 set_thread (inferior_pid
, 1);
2943 remote_send (buf
, PBUFSIZ
);
2945 /* Save the size of the packet sent to us by the target. Its used
2946 as a heuristic when determining the max size of packets that the
2947 target can safely receive. */
2948 if (actual_register_packet_size
== 0)
2949 actual_register_packet_size
= strlen (buf
);
2951 /* Unimplemented registers read as all bits zero. */
2952 memset (regs
, 0, REGISTER_BYTES
);
2954 /* We can get out of synch in various cases. If the first character
2955 in the buffer is not a hex character, assume that has happened
2956 and try to fetch another packet to read. */
2957 while ((buf
[0] < '0' || buf
[0] > '9')
2958 && (buf
[0] < 'a' || buf
[0] > 'f')
2959 && buf
[0] != 'x') /* New: unavailable register value */
2962 fprintf_unfiltered (gdb_stdlog
,
2963 "Bad register packet; fetching a new packet\n");
2964 getpkt (buf
, PBUFSIZ
, 0);
2967 /* Reply describes registers byte by byte, each byte encoded as two
2968 hex characters. Suck them all up, then supply them to the
2969 register cacheing/storage mechanism. */
2972 for (i
= 0; i
< REGISTER_BYTES
; i
++)
2978 warning ("Remote reply is of odd length: %s", buf
);
2979 /* Don't change register_bytes_found in this case, and don't
2980 print a second warning. */
2983 if (p
[0] == 'x' && p
[1] == 'x')
2984 regs
[i
] = 0; /* 'x' */
2986 regs
[i
] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
2990 if (i
!= register_bytes_found
)
2992 register_bytes_found
= i
;
2993 #ifdef REGISTER_BYTES_OK
2994 if (!REGISTER_BYTES_OK (i
))
2995 warning ("Remote reply is too short: %s", buf
);
3000 for (i
= 0; i
< NUM_REGS
; i
++)
3002 supply_register (i
, ®s
[REGISTER_BYTE (i
)]);
3003 if (buf
[REGISTER_BYTE (i
) * 2] == 'x')
3004 register_valid
[i
] = -1; /* register value not available */
3008 /* Prepare to store registers. Since we may send them all (using a
3009 'G' request), we have to read out the ones we don't want to change
3013 remote_prepare_to_store ()
3015 /* Make sure the entire registers array is valid. */
3016 switch (remote_protocol_P
.support
)
3018 case PACKET_DISABLE
:
3019 case PACKET_SUPPORT_UNKNOWN
:
3020 read_register_bytes (0, (char *) NULL
, REGISTER_BYTES
);
3027 /* Helper: Attempt to store REGNO using the P packet. Return fail IFF
3028 packet was not recognized. */
3031 store_register_using_P (int regno
)
3033 /* Try storing a single register. */
3034 char *buf
= alloca (PBUFSIZ
);
3039 sprintf (buf
, "P%x=", regno
);
3040 p
= buf
+ strlen (buf
);
3041 regp
= ®isters
[REGISTER_BYTE (regno
)];
3042 for (i
= 0; i
< REGISTER_RAW_SIZE (regno
); ++i
)
3044 *p
++ = tohex ((regp
[i
] >> 4) & 0xf);
3045 *p
++ = tohex (regp
[i
] & 0xf);
3048 remote_send (buf
, PBUFSIZ
);
3050 return buf
[0] != '\0';
3054 /* Store register REGNO, or all registers if REGNO == -1, from the contents
3055 of REGISTERS. FIXME: ignores errors. */
3058 remote_store_registers (regno
)
3061 char *buf
= alloca (PBUFSIZ
);
3065 set_thread (inferior_pid
, 1);
3069 switch (remote_protocol_P
.support
)
3071 case PACKET_DISABLE
:
3074 if (store_register_using_P (regno
))
3077 error ("Protocol error: P packet not recognized by stub");
3078 case PACKET_SUPPORT_UNKNOWN
:
3079 if (store_register_using_P (regno
))
3081 /* The stub recognized the 'P' packet. Remember this. */
3082 remote_protocol_P
.support
= PACKET_ENABLE
;
3087 /* The stub does not support the 'P' packet. Use 'G'
3088 instead, and don't try using 'P' in the future (it
3089 will just waste our time). */
3090 remote_protocol_P
.support
= PACKET_DISABLE
;
3098 /* Command describes registers byte by byte,
3099 each byte encoded as two hex characters. */
3102 /* remote_prepare_to_store insures that register_bytes_found gets set. */
3103 for (i
= 0; i
< register_bytes_found
; i
++)
3105 *p
++ = tohex ((registers
[i
] >> 4) & 0xf);
3106 *p
++ = tohex (registers
[i
] & 0xf);
3110 remote_send (buf
, PBUFSIZ
);
3113 /* Use of the data cache *used* to be disabled because it loses for looking
3114 at and changing hardware I/O ports and the like. Accepting `volatile'
3115 would perhaps be one way to fix it. Another idea would be to use the
3116 executable file for the text segment (for all SEC_CODE sections?
3117 For all SEC_READONLY sections?). This has problems if you want to
3118 actually see what the memory contains (e.g. self-modifying code,
3119 clobbered memory, user downloaded the wrong thing).
3121 Because it speeds so much up, it's now enabled, if you're playing
3122 with registers you turn it of (set remotecache 0). */
3124 /* Read a word from remote address ADDR and return it.
3125 This goes through the data cache. */
3129 remote_fetch_word (addr
)
3132 return dcache_fetch (remote_dcache
, addr
);
3135 /* Write a word WORD into remote address ADDR.
3136 This goes through the data cache. */
3139 remote_store_word (addr
, word
)
3143 dcache_poke (remote_dcache
, addr
, word
);
3145 #endif /* 0 (unused?) */
3149 /* Return the number of hex digits in num. */
3157 for (i
= 0; num
!= 0; i
++)
3163 /* Set BUF to the minimum number of hex digits representing NUM. */
3166 hexnumstr (buf
, num
)
3170 int len
= hexnumlen (num
);
3171 return hexnumnstr (buf
, num
, len
);
3175 /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */
3178 hexnumnstr (buf
, num
, width
)
3187 for (i
= width
- 1; i
>= 0; i
--)
3189 buf
[i
] = "0123456789abcdef"[(num
& 0xf)];
3196 /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */
3199 remote_address_masked (addr
)
3202 if (remote_address_size
> 0
3203 && remote_address_size
< (sizeof (ULONGEST
) * 8))
3205 /* Only create a mask when that mask can safely be constructed
3206 in a ULONGEST variable. */
3208 mask
= (mask
<< remote_address_size
) - 1;
3214 /* Determine whether the remote target supports binary downloading.
3215 This is accomplished by sending a no-op memory write of zero length
3216 to the target at the specified address. It does not suffice to send
3217 the whole packet, since many stubs strip the eighth bit and subsequently
3218 compute a wrong checksum, which causes real havoc with remote_write_bytes.
3220 NOTE: This can still lose if the serial line is not eight-bit
3221 clean. In cases like this, the user should clear "remote
3225 check_binary_download (addr
)
3228 switch (remote_protocol_binary_download
.support
)
3230 case PACKET_DISABLE
:
3234 case PACKET_SUPPORT_UNKNOWN
:
3236 char *buf
= alloca (PBUFSIZ
);
3241 p
+= hexnumstr (p
, (ULONGEST
) addr
);
3243 p
+= hexnumstr (p
, (ULONGEST
) 0);
3247 putpkt_binary (buf
, (int) (p
- buf
));
3248 getpkt (buf
, PBUFSIZ
, 0);
3253 fprintf_unfiltered (gdb_stdlog
,
3254 "binary downloading NOT suppported by target\n");
3255 remote_protocol_binary_download
.support
= PACKET_DISABLE
;
3260 fprintf_unfiltered (gdb_stdlog
,
3261 "binary downloading suppported by target\n");
3262 remote_protocol_binary_download
.support
= PACKET_ENABLE
;
3269 /* Write memory data directly to the remote machine.
3270 This does not inform the data cache; the data cache uses this.
3271 MEMADDR is the address in the remote memory space.
3272 MYADDR is the address of the buffer in our space.
3273 LEN is the number of bytes.
3275 Returns number of bytes transferred, or 0 (setting errno) for
3276 error. Only transfer a single packet. */
3279 remote_write_bytes (CORE_ADDR memaddr
, char *myaddr
, int len
)
3282 int max_buf_size
; /* Max size of packet output buffer */
3284 unsigned char *plen
;
3290 /* Verify that the target can support a binary download */
3291 check_binary_download (memaddr
);
3293 /* Determine the max packet size. */
3294 max_buf_size
= get_memory_write_packet_size ();
3295 sizeof_buf
= max_buf_size
+ 1; /* Space for trailing NUL */
3296 buf
= alloca (sizeof_buf
);
3298 /* Subtract header overhead from max payload size - $M<memaddr>,<len>:#nn */
3299 max_buf_size
-= 2 + hexnumlen (memaddr
+ len
- 1) + 1 + hexnumlen (len
) + 4;
3301 /* construct "M"<memaddr>","<len>":" */
3302 /* sprintf (buf, "M%lx,%x:", (unsigned long) memaddr, todo); */
3305 /* Append [XM]. Compute a best guess of the number of bytes
3306 actually transfered. */
3307 switch (remote_protocol_binary_download
.support
)
3311 /* Best guess at number of bytes that will fit. */
3312 todo
= min (len
, max_buf_size
);
3314 case PACKET_DISABLE
:
3316 /* num bytes that will fit */
3317 todo
= min (len
, max_buf_size
/ 2);
3319 case PACKET_SUPPORT_UNKNOWN
:
3320 internal_error ("remote_write_bytes: bad switch");
3323 /* Append <memaddr> */
3324 memaddr
= remote_address_masked (memaddr
);
3325 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
3328 /* Append <len>. Retain the location/size of <len>. It may
3329 need to be adjusted once the packet body has been created. */
3331 plenlen
= hexnumstr (p
, (ULONGEST
) todo
);
3336 /* Append the packet body. */
3337 switch (remote_protocol_binary_download
.support
)
3340 /* Binary mode. Send target system values byte by byte, in
3341 increasing byte addresses. Only escape certain critical
3344 (nr_bytes
< todo
) && (p
- buf
) < (max_buf_size
- 2);
3347 switch (myaddr
[nr_bytes
] & 0xff)
3352 /* These must be escaped */
3354 *p
++ = (myaddr
[nr_bytes
] & 0xff) ^ 0x20;
3357 *p
++ = myaddr
[nr_bytes
] & 0xff;
3361 if (nr_bytes
< todo
)
3363 /* Escape chars have filled up the buffer prematurely,
3364 and we have actually sent fewer bytes than planned.
3365 Fix-up the length field of the packet. Use the same
3366 number of characters as before. */
3368 plen
+= hexnumnstr (plen
, (ULONGEST
) nr_bytes
, plenlen
);
3369 *plen
= ':'; /* overwrite \0 from hexnumnstr() */
3372 case PACKET_DISABLE
:
3373 /* Normal mode: Send target system values byte by byte, in
3374 increasing byte addresses. Each byte is encoded as a two hex
3376 for (nr_bytes
= 0; nr_bytes
< todo
; nr_bytes
++)
3378 *p
++ = tohex ((myaddr
[nr_bytes
] >> 4) & 0xf);
3379 *p
++ = tohex (myaddr
[nr_bytes
] & 0xf);
3383 case PACKET_SUPPORT_UNKNOWN
:
3384 internal_error ("remote_write_bytes: bad switch");
3387 putpkt_binary (buf
, (int) (p
- buf
));
3388 getpkt (buf
, sizeof_buf
, 0);
3392 /* There is no correspondance between what the remote protocol
3393 uses for errors and errno codes. We would like a cleaner way
3394 of representing errors (big enough to include errno codes,
3395 bfd_error codes, and others). But for now just return EIO. */
3400 /* Return NR_BYTES, not TODO, in case escape chars caused us to send fewer
3401 bytes than we'd planned. */
3405 /* Read memory data directly from the remote machine.
3406 This does not use the data cache; the data cache uses this.
3407 MEMADDR is the address in the remote memory space.
3408 MYADDR is the address of the buffer in our space.
3409 LEN is the number of bytes.
3411 Returns number of bytes transferred, or 0 for error. */
3413 /* NOTE: cagney/1999-10-18: This function (and its siblings in other
3414 remote targets) shouldn't attempt to read the entire buffer.
3415 Instead it should read a single packet worth of data and then
3416 return the byte size of that packet to the caller. The caller (its
3417 caller and its callers caller ;-) already contains code for
3418 handling partial reads. */
3421 remote_read_bytes (memaddr
, myaddr
, len
)
3427 int max_buf_size
; /* Max size of packet output buffer */
3431 /* Create a buffer big enough for this packet. */
3432 max_buf_size
= get_memory_read_packet_size ();
3433 sizeof_buf
= max_buf_size
+ 1; /* Space for trailing NUL */
3434 buf
= alloca (sizeof_buf
);
3443 todo
= min (len
, max_buf_size
/ 2); /* num bytes that will fit */
3445 /* construct "m"<memaddr>","<len>" */
3446 /* sprintf (buf, "m%lx,%x", (unsigned long) memaddr, todo); */
3447 memaddr
= remote_address_masked (memaddr
);
3450 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
3452 p
+= hexnumstr (p
, (ULONGEST
) todo
);
3456 getpkt (buf
, sizeof_buf
, 0);
3460 /* There is no correspondance between what the remote protocol uses
3461 for errors and errno codes. We would like a cleaner way of
3462 representing errors (big enough to include errno codes, bfd_error
3463 codes, and others). But for now just return EIO. */
3468 /* Reply describes memory byte by byte,
3469 each byte encoded as two hex characters. */
3472 for (i
= 0; i
< todo
; i
++)
3474 if (p
[0] == 0 || p
[1] == 0)
3475 /* Reply is short. This means that we were able to read
3476 only part of what we wanted to. */
3477 return i
+ (origlen
- len
);
3478 myaddr
[i
] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
3488 /* Read or write LEN bytes from inferior memory at MEMADDR,
3489 transferring to or from debugger address BUFFER. Write to inferior if
3490 SHOULD_WRITE is nonzero. Returns length of data written or read; 0
3493 #ifndef REMOTE_TRANSLATE_XFER_ADDRESS
3494 #define REMOTE_TRANSLATE_XFER_ADDRESS(MEM_ADDR, MEM_LEN, TARG_ADDR, TARG_LEN) \
3495 (*(TARG_ADDR) = (MEM_ADDR), *(TARG_LEN) = (MEM_LEN))
3500 remote_xfer_memory (mem_addr
, buffer
, mem_len
, should_write
, target
)
3505 struct target_ops
*target
; /* ignored */
3507 CORE_ADDR targ_addr
;
3509 REMOTE_TRANSLATE_XFER_ADDRESS (mem_addr
, mem_len
, &targ_addr
, &targ_len
);
3513 return dcache_xfer_memory (remote_dcache
, targ_addr
, buffer
,
3514 targ_len
, should_write
);
3519 /* Enable after 4.12. */
3522 remote_search (len
, data
, mask
, startaddr
, increment
, lorange
, hirange
3523 addr_found
, data_found
)
3527 CORE_ADDR startaddr
;
3531 CORE_ADDR
*addr_found
;
3534 if (increment
== -4 && len
== 4)
3536 long mask_long
, data_long
;
3537 long data_found_long
;
3538 CORE_ADDR addr_we_found
;
3539 char *buf
= alloca (PBUFSIZ
);
3540 long returned_long
[2];
3543 mask_long
= extract_unsigned_integer (mask
, len
);
3544 data_long
= extract_unsigned_integer (data
, len
);
3545 sprintf (buf
, "t%x:%x,%x", startaddr
, data_long
, mask_long
);
3547 getpkt (buf
, PBUFSIZ
, 0);
3550 /* The stub doesn't support the 't' request. We might want to
3551 remember this fact, but on the other hand the stub could be
3552 switched on us. Maybe we should remember it only until
3553 the next "target remote". */
3554 generic_search (len
, data
, mask
, startaddr
, increment
, lorange
,
3555 hirange
, addr_found
, data_found
);
3560 /* There is no correspondance between what the remote protocol uses
3561 for errors and errno codes. We would like a cleaner way of
3562 representing errors (big enough to include errno codes, bfd_error
3563 codes, and others). But for now just use EIO. */
3564 memory_error (EIO
, startaddr
);
3567 while (*p
!= '\0' && *p
!= ',')
3568 addr_we_found
= (addr_we_found
<< 4) + fromhex (*p
++);
3570 error ("Protocol error: short return for search");
3572 data_found_long
= 0;
3573 while (*p
!= '\0' && *p
!= ',')
3574 data_found_long
= (data_found_long
<< 4) + fromhex (*p
++);
3575 /* Ignore anything after this comma, for future extensions. */
3577 if (addr_we_found
< lorange
|| addr_we_found
>= hirange
)
3583 *addr_found
= addr_we_found
;
3584 *data_found
= store_unsigned_integer (data_we_found
, len
);
3587 generic_search (len
, data
, mask
, startaddr
, increment
, lorange
,
3588 hirange
, addr_found
, data_found
);
3593 remote_files_info (ignore
)
3594 struct target_ops
*ignore
;
3596 puts_filtered ("Debugging a target over a serial line.\n");
3599 /* Stuff for dealing with the packets which are part of this protocol.
3600 See comment at top of file for details. */
3602 /* Read a single character from the remote end, masking it down to 7 bits. */
3610 ch
= SERIAL_READCHAR (remote_desc
, timeout
);
3615 switch ((enum serial_rc
) ch
)
3618 target_mourn_inferior ();
3619 error ("Remote connection closed");
3622 perror_with_name ("Remote communication error");
3624 case SERIAL_TIMEOUT
:
3630 /* Send the command in BUF to the remote machine, and read the reply
3631 into BUF. Report an error if we get an error reply. */
3634 remote_send (char *buf
,
3638 getpkt (buf
, sizeof_buf
, 0);
3641 error ("Remote failure reply: %s", buf
);
3644 /* Display a null-terminated packet on stdout, for debugging, using C
3651 puts_filtered ("\"");
3652 fputstr_filtered (buf
, '"', gdb_stdout
);
3653 puts_filtered ("\"");
3660 return putpkt_binary (buf
, strlen (buf
));
3663 /* Send a packet to the remote machine, with error checking. The data
3664 of the packet is in BUF. The string in BUF can be at most PBUFSIZ - 5
3665 to account for the $, # and checksum, and for a possible /0 if we are
3666 debugging (remote_debug) and want to print the sent packet as a string */
3669 putpkt_binary (buf
, cnt
)
3674 unsigned char csum
= 0;
3675 char *buf2
= alloca (cnt
+ 6);
3676 long sizeof_junkbuf
= PBUFSIZ
;
3677 char *junkbuf
= alloca (sizeof_junkbuf
);
3683 /* Copy the packet into buffer BUF2, encapsulating it
3684 and giving it a checksum. */
3689 for (i
= 0; i
< cnt
; i
++)
3695 *p
++ = tohex ((csum
>> 4) & 0xf);
3696 *p
++ = tohex (csum
& 0xf);
3698 /* Send it over and over until we get a positive ack. */
3702 int started_error_output
= 0;
3707 fprintf_unfiltered (gdb_stdlog
, "Sending packet: ");
3708 fputstrn_unfiltered (buf2
, p
- buf2
, 0, gdb_stdlog
);
3709 fprintf_unfiltered (gdb_stdlog
, "...");
3710 gdb_flush (gdb_stdlog
);
3712 if (SERIAL_WRITE (remote_desc
, buf2
, p
- buf2
))
3713 perror_with_name ("putpkt: write failed");
3715 /* read until either a timeout occurs (-2) or '+' is read */
3718 ch
= readchar (remote_timeout
);
3725 case SERIAL_TIMEOUT
:
3727 if (started_error_output
)
3729 putchar_unfiltered ('\n');
3730 started_error_output
= 0;
3739 fprintf_unfiltered (gdb_stdlog
, "Ack\n");
3741 case SERIAL_TIMEOUT
:
3745 break; /* Retransmit buffer */
3748 /* It's probably an old response, and we're out of sync.
3749 Just gobble up the packet and ignore it. */
3750 getpkt (junkbuf
, sizeof_junkbuf
, 0);
3751 continue; /* Now, go look for + */
3756 if (!started_error_output
)
3758 started_error_output
= 1;
3759 fprintf_unfiltered (gdb_stdlog
, "putpkt: Junk: ");
3761 fputc_unfiltered (ch
& 0177, gdb_stdlog
);
3765 break; /* Here to retransmit */
3769 /* This is wrong. If doing a long backtrace, the user should be
3770 able to get out next time we call QUIT, without anything as
3771 violent as interrupt_query. If we want to provide a way out of
3772 here without getting to the next QUIT, it should be based on
3773 hitting ^C twice as in remote_wait. */
3783 static int remote_cisco_mode
;
3785 /* Come here after finding the start of the frame. Collect the rest
3786 into BUF, verifying the checksum, length, and handling run-length
3787 compression. No more than sizeof_buf-1 characters are read so that
3788 the buffer can be NUL terminated.
3790 Returns -1 on error, number of characters in buffer (ignoring the
3791 trailing NULL) on success. (could be extended to return one of the
3792 SERIAL status indications). */
3795 read_frame (char *buf
,
3807 /* ASSERT (bc < sizeof_buf - 1) - space for trailing NUL */
3808 c
= readchar (remote_timeout
);
3811 case SERIAL_TIMEOUT
:
3813 fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog
);
3817 fputs_filtered ("Saw new packet start in middle of old one\n",
3819 return -1; /* Start a new packet, count retries */
3822 unsigned char pktcsum
;
3826 pktcsum
= fromhex (readchar (remote_timeout
)) << 4;
3827 pktcsum
|= fromhex (readchar (remote_timeout
));
3829 if (csum
== pktcsum
)
3834 fprintf_filtered (gdb_stdlog
,
3835 "Bad checksum, sentsum=0x%x, csum=0x%x, buf=",
3837 fputs_filtered (buf
, gdb_stdlog
);
3838 fputs_filtered ("\n", gdb_stdlog
);
3840 /* Number of characters in buffer ignoring trailing
3844 case '*': /* Run length encoding */
3849 if (remote_cisco_mode
== 0)
3851 c
= readchar (remote_timeout
);
3853 repeat
= c
- ' ' + 3; /* Compute repeat count */
3857 /* Cisco's run-length encoding variant uses two
3858 hex chars to represent the repeat count. */
3860 c
= readchar (remote_timeout
);
3862 repeat
= fromhex (c
) << 4;
3863 c
= readchar (remote_timeout
);
3865 repeat
+= fromhex (c
);
3868 /* The character before ``*'' is repeated. */
3870 if (repeat
> 0 && repeat
<= 255
3872 && bc
+ repeat
< sizeof_buf
- 1)
3874 memset (&buf
[bc
], buf
[bc
- 1], repeat
);
3880 printf_filtered ("Repeat count %d too large for buffer: ", repeat
);
3881 puts_filtered (buf
);
3882 puts_filtered ("\n");
3886 if (bc
< sizeof_buf
- 1)
3894 puts_filtered ("Remote packet too long: ");
3895 puts_filtered (buf
);
3896 puts_filtered ("\n");
3903 /* Read a packet from the remote machine, with error checking, and
3904 store it in BUF. If FOREVER, wait forever rather than timing out;
3905 this is used (in synchronous mode) to wait for a target that is is
3906 executing user code to stop. */
3918 strcpy (buf
, "timeout");
3922 timeout
= watchdog
> 0 ? watchdog
: -1;
3926 timeout
= remote_timeout
;
3930 for (tries
= 1; tries
<= MAX_TRIES
; tries
++)
3932 /* This can loop forever if the remote side sends us characters
3933 continuously, but if it pauses, we'll get a zero from readchar
3934 because of timeout. Then we'll count that as a retry. */
3936 /* Note that we will only wait forever prior to the start of a packet.
3937 After that, we expect characters to arrive at a brisk pace. They
3938 should show up within remote_timeout intervals. */
3942 c
= readchar (timeout
);
3944 if (c
== SERIAL_TIMEOUT
)
3946 if (forever
) /* Watchdog went off? Kill the target. */
3949 target_mourn_inferior ();
3950 error ("Watchdog has expired. Target detached.\n");
3953 fputs_filtered ("Timed out.\n", gdb_stdlog
);
3959 /* We've found the start of a packet, now collect the data. */
3961 val
= read_frame (buf
, sizeof_buf
);
3967 fprintf_unfiltered (gdb_stdlog
, "Packet received: ");
3968 fputstr_unfiltered (buf
, 0, gdb_stdlog
);
3969 fprintf_unfiltered (gdb_stdlog
, "\n");
3971 SERIAL_WRITE (remote_desc
, "+", 1);
3975 /* Try the whole thing again. */
3977 SERIAL_WRITE (remote_desc
, "-", 1);
3980 /* We have tried hard enough, and just can't receive the packet. Give up. */
3982 printf_unfiltered ("Ignoring packet error, continuing...\n");
3983 SERIAL_WRITE (remote_desc
, "+", 1);
3989 /* For some mysterious reason, wait_for_inferior calls kill instead of
3990 mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */
3994 target_mourn_inferior ();
3998 /* Use catch_errors so the user can quit from gdb even when we aren't on
3999 speaking terms with the remote system. */
4000 catch_errors ((catch_errors_ftype
*) putpkt
, "k", "", RETURN_MASK_ERROR
);
4002 /* Don't wait for it to die. I'm not really sure it matters whether
4003 we do or not. For the existing stubs, kill is a noop. */
4004 target_mourn_inferior ();
4007 /* Async version of remote_kill. */
4009 remote_async_kill ()
4011 /* Unregister the file descriptor from the event loop. */
4012 if (target_is_async_p ())
4013 SERIAL_ASYNC (remote_desc
, NULL
, 0);
4015 /* For some mysterious reason, wait_for_inferior calls kill instead of
4016 mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */
4020 target_mourn_inferior ();
4024 /* Use catch_errors so the user can quit from gdb even when we aren't on
4025 speaking terms with the remote system. */
4026 catch_errors ((catch_errors_ftype
*) putpkt
, "k", "", RETURN_MASK_ERROR
);
4028 /* Don't wait for it to die. I'm not really sure it matters whether
4029 we do or not. For the existing stubs, kill is a noop. */
4030 target_mourn_inferior ();
4036 remote_mourn_1 (&remote_ops
);
4040 remote_async_mourn ()
4042 remote_mourn_1 (&remote_async_ops
);
4046 extended_remote_mourn ()
4048 /* We do _not_ want to mourn the target like this; this will
4049 remove the extended remote target from the target stack,
4050 and the next time the user says "run" it'll fail.
4052 FIXME: What is the right thing to do here? */
4054 remote_mourn_1 (&extended_remote_ops
);
4058 /* Worker function for remote_mourn. */
4060 remote_mourn_1 (target
)
4061 struct target_ops
*target
;
4063 unpush_target (target
);
4064 generic_mourn_inferior ();
4067 /* In the extended protocol we want to be able to do things like
4068 "run" and have them basically work as expected. So we need
4069 a special create_inferior function.
4071 FIXME: One day add support for changing the exec file
4072 we're debugging, arguments and an environment. */
4075 extended_remote_create_inferior (exec_file
, args
, env
)
4080 /* Rip out the breakpoints; we'll reinsert them after restarting
4081 the remote server. */
4082 remove_breakpoints ();
4084 /* Now restart the remote server. */
4085 extended_remote_restart ();
4087 /* Now put the breakpoints back in. This way we're safe if the
4088 restart function works via a unix fork on the remote side. */
4089 insert_breakpoints ();
4091 /* Clean up from the last time we were running. */
4092 clear_proceed_status ();
4094 /* Let the remote process run. */
4095 proceed (-1, TARGET_SIGNAL_0
, 0);
4098 /* Async version of extended_remote_create_inferior. */
4100 extended_remote_async_create_inferior (exec_file
, args
, env
)
4105 /* Rip out the breakpoints; we'll reinsert them after restarting
4106 the remote server. */
4107 remove_breakpoints ();
4109 /* If running asynchronously, register the target file descriptor
4110 with the event loop. */
4111 if (event_loop_p
&& target_can_async_p ())
4112 target_async (inferior_event_handler
, 0);
4114 /* Now restart the remote server. */
4115 extended_remote_restart ();
4117 /* Now put the breakpoints back in. This way we're safe if the
4118 restart function works via a unix fork on the remote side. */
4119 insert_breakpoints ();
4121 /* Clean up from the last time we were running. */
4122 clear_proceed_status ();
4124 /* Let the remote process run. */
4125 proceed (-1, TARGET_SIGNAL_0
, 0);
4129 /* On some machines, e.g. 68k, we may use a different breakpoint instruction
4130 than other targets; in those use REMOTE_BREAKPOINT instead of just
4131 BREAKPOINT. Also, bi-endian targets may define LITTLE_REMOTE_BREAKPOINT
4132 and BIG_REMOTE_BREAKPOINT. If none of these are defined, we just call
4133 the standard routines that are in mem-break.c. */
4135 /* FIXME, these ought to be done in a more dynamic fashion. For instance,
4136 the choice of breakpoint instruction affects target program design and
4137 vice versa, and by making it user-tweakable, the special code here
4138 goes away and we need fewer special GDB configurations. */
4140 #if defined (LITTLE_REMOTE_BREAKPOINT) && defined (BIG_REMOTE_BREAKPOINT) && !defined(REMOTE_BREAKPOINT)
4141 #define REMOTE_BREAKPOINT
4144 #ifdef REMOTE_BREAKPOINT
4146 /* If the target isn't bi-endian, just pretend it is. */
4147 #if !defined (LITTLE_REMOTE_BREAKPOINT) && !defined (BIG_REMOTE_BREAKPOINT)
4148 #define LITTLE_REMOTE_BREAKPOINT REMOTE_BREAKPOINT
4149 #define BIG_REMOTE_BREAKPOINT REMOTE_BREAKPOINT
4152 static unsigned char big_break_insn
[] = BIG_REMOTE_BREAKPOINT
;
4153 static unsigned char little_break_insn
[] = LITTLE_REMOTE_BREAKPOINT
;
4155 #endif /* REMOTE_BREAKPOINT */
4157 /* Insert a breakpoint on targets that don't have any better breakpoint
4158 support. We read the contents of the target location and stash it,
4159 then overwrite it with a breakpoint instruction. ADDR is the target
4160 location in the target machine. CONTENTS_CACHE is a pointer to
4161 memory allocated for saving the target contents. It is guaranteed
4162 by the caller to be long enough to save sizeof BREAKPOINT bytes (this
4163 is accomplished via BREAKPOINT_MAX). */
4166 remote_insert_breakpoint (addr
, contents_cache
)
4168 char *contents_cache
;
4170 #ifdef REMOTE_BREAKPOINT
4175 /* Try the "Z" packet if it is not already disabled.
4176 If it succeeds, then set the support to PACKET_ENABLE.
4177 If it fails, and the user has explicitly requested the Z support
4178 then report an error, otherwise, mark it disabled and go on. */
4180 if ((remote_protocol_Z
.support
== PACKET_ENABLE
)
4181 || (remote_protocol_Z
.support
== PACKET_SUPPORT_UNKNOWN
))
4183 char *buf
= alloca (PBUFSIZ
);
4186 addr
= remote_address_masked (addr
);
4190 p
+= hexnumstr (p
, (ULONGEST
) addr
);
4191 BREAKPOINT_FROM_PC (&addr
, &bp_size
);
4192 sprintf (p
, ",%d", bp_size
);
4195 getpkt (buf
, PBUFSIZ
, 0);
4199 remote_protocol_Z
.support
= PACKET_ENABLE
;
4200 return (buf
[0] == 'E');
4203 /* The stub does not support the 'Z' request. If the user has
4204 explicitly requested the Z support, or if the stub previously
4205 said it supported the packet, this is an error,
4206 otherwise, mark it disabled. */
4208 else if (remote_protocol_Z
.support
== PACKET_ENABLE
)
4210 error ("Protocol error: Z packet not recognized by stub");
4214 remote_protocol_Z
.support
= PACKET_DISABLE
;
4218 #ifdef REMOTE_BREAKPOINT
4219 val
= target_read_memory (addr
, contents_cache
, sizeof big_break_insn
);
4223 if (TARGET_BYTE_ORDER
== BIG_ENDIAN
)
4224 val
= target_write_memory (addr
, (char *) big_break_insn
,
4225 sizeof big_break_insn
);
4227 val
= target_write_memory (addr
, (char *) little_break_insn
,
4228 sizeof little_break_insn
);
4233 return memory_insert_breakpoint (addr
, contents_cache
);
4234 #endif /* REMOTE_BREAKPOINT */
4238 remote_remove_breakpoint (addr
, contents_cache
)
4240 char *contents_cache
;
4244 if ((remote_protocol_Z
.support
== PACKET_ENABLE
)
4245 || (remote_protocol_Z
.support
== PACKET_SUPPORT_UNKNOWN
))
4247 char *buf
= alloca (PBUFSIZ
);
4254 addr
= remote_address_masked (addr
);
4255 p
+= hexnumstr (p
, (ULONGEST
) addr
);
4256 BREAKPOINT_FROM_PC (&addr
, &bp_size
);
4257 sprintf (p
, ",%d", bp_size
);
4260 getpkt (buf
, PBUFSIZ
, 0);
4262 return (buf
[0] == 'E');
4265 #ifdef REMOTE_BREAKPOINT
4266 return target_write_memory (addr
, contents_cache
, sizeof big_break_insn
);
4268 return memory_remove_breakpoint (addr
, contents_cache
);
4269 #endif /* REMOTE_BREAKPOINT */
4272 #ifdef TARGET_HAS_HARDWARE_WATCHPOINTS
4274 remote_insert_watchpoint (addr
, len
, type
)
4279 char *buf
= alloca (PBUFSIZ
);
4282 if (remote_protocol_Z
.support
== PACKET_DISABLE
)
4283 error ("Can't set hardware watchpoints without the 'Z' packet\n");
4285 sprintf (buf
, "Z%x,", type
+ 2 );
4286 p
= strchr (buf
, '\0');
4287 addr
= remote_address_masked (addr
);
4288 p
+= hexnumstr (p
, (ULONGEST
) addr
);
4289 sprintf (p
, ",%x", len
);
4292 getpkt (buf
, PBUFSIZ
, 0);
4294 if (buf
[0] == '\0' || buf
[0] == 'E')
4301 remote_remove_watchpoint (addr
, len
, type
)
4306 char *buf
= alloca (PBUFSIZ
);
4309 sprintf (buf
, "z%x,", type
+ 2 );
4310 p
= strchr (buf
, '\0');
4311 addr
= remote_address_masked (addr
);
4312 p
+= hexnumstr (p
, (ULONGEST
) addr
);
4313 sprintf (p
, ",%x", len
);
4315 getpkt (buf
, PBUFSIZ
, 0);
4317 if (buf
[0] == '\0' || buf
[0] == 'E')
4324 remote_insert_hw_breakpoint (addr
, len
)
4328 char *buf
= alloca (PBUFSIZ
);
4331 if (remote_protocol_Z
.support
== PACKET_DISABLE
)
4332 error ("Can't set hardware breakpoints without the 'Z' packet\n");
4338 addr
= remote_address_masked (addr
);
4339 p
+= hexnumstr (p
, (ULONGEST
) addr
);
4343 getpkt (buf
, PBUFSIZ
, 0);
4345 if (buf
[0] == '\0' || buf
[0] == 'E')
4352 remote_remove_hw_breakpoint (addr
, len
)
4356 char *buf
= alloca (PBUFSIZ
);
4363 addr
= remote_address_masked (addr
);
4364 p
+= hexnumstr (p
, (ULONGEST
) addr
);
4368 getpkt (buf
, PBUFSIZ
, 0);
4370 if (buf
[0] == '\0' || buf
[0] == 'E')
4377 /* Some targets are only capable of doing downloads, and afterwards
4378 they switch to the remote serial protocol. This function provides
4379 a clean way to get from the download target to the remote target.
4380 It's basically just a wrapper so that we don't have to expose any
4381 of the internal workings of remote.c.
4383 Prior to calling this routine, you should shutdown the current
4384 target code, else you will get the "A program is being debugged
4385 already..." message. Usually a call to pop_target() suffices. */
4388 push_remote_target (name
, from_tty
)
4392 printf_filtered ("Switching to remote protocol\n");
4393 remote_open (name
, from_tty
);
4396 /* Other targets want to use the entire remote serial module but with
4397 certain remote_ops overridden. */
4400 open_remote_target (name
, from_tty
, target
, extended_p
)
4403 struct target_ops
*target
;
4406 printf_filtered ("Selecting the %sremote protocol\n",
4407 (extended_p
? "extended-" : ""));
4408 remote_open_1 (name
, from_tty
, target
, extended_p
);
4411 /* Table used by the crc32 function to calcuate the checksum. */
4413 static unsigned long crc32_table
[256] =
4416 static unsigned long
4417 crc32 (buf
, len
, crc
)
4422 if (!crc32_table
[1])
4424 /* Initialize the CRC table and the decoding table. */
4428 for (i
= 0; i
< 256; i
++)
4430 for (c
= i
<< 24, j
= 8; j
> 0; --j
)
4431 c
= c
& 0x80000000 ? (c
<< 1) ^ 0x04c11db7 : (c
<< 1);
4438 crc
= (crc
<< 8) ^ crc32_table
[((crc
>> 24) ^ *buf
) & 255];
4444 /* compare-sections command
4446 With no arguments, compares each loadable section in the exec bfd
4447 with the same memory range on the target, and reports mismatches.
4448 Useful for verifying the image on the target against the exec file.
4449 Depends on the target understanding the new "qCRC:" request. */
4451 /* FIXME: cagney/1999-10-26: This command should be broken down into a
4452 target method (target verify memory) and generic version of the
4453 actual command. This will allow other high-level code (especially
4454 generic_load()) to make use of this target functionality. */
4457 compare_sections_command (args
, from_tty
)
4462 unsigned long host_crc
, target_crc
;
4463 extern bfd
*exec_bfd
;
4464 struct cleanup
*old_chain
;
4468 char *buf
= alloca (PBUFSIZ
);
4475 error ("command cannot be used without an exec file");
4476 if (!current_target
.to_shortname
||
4477 strcmp (current_target
.to_shortname
, "remote") != 0)
4478 error ("command can only be used with remote target");
4480 for (s
= exec_bfd
->sections
; s
; s
= s
->next
)
4482 if (!(s
->flags
& SEC_LOAD
))
4483 continue; /* skip non-loadable section */
4485 size
= bfd_get_section_size_before_reloc (s
);
4487 continue; /* skip zero-length section */
4489 sectname
= (char *) bfd_get_section_name (exec_bfd
, s
);
4490 if (args
&& strcmp (args
, sectname
) != 0)
4491 continue; /* not the section selected by user */
4493 matched
= 1; /* do this section */
4495 /* FIXME: assumes lma can fit into long */
4496 sprintf (buf
, "qCRC:%lx,%lx", (long) lma
, (long) size
);
4499 /* be clever; compute the host_crc before waiting for target reply */
4500 sectdata
= xmalloc (size
);
4501 old_chain
= make_cleanup (free
, sectdata
);
4502 bfd_get_section_contents (exec_bfd
, s
, sectdata
, 0, size
);
4503 host_crc
= crc32 ((unsigned char *) sectdata
, size
, 0xffffffff);
4505 getpkt (buf
, PBUFSIZ
, 0);
4507 error ("target memory fault, section %s, range 0x%08x -- 0x%08x",
4508 sectname
, lma
, lma
+ size
);
4510 error ("remote target does not support this operation");
4512 for (target_crc
= 0, tmp
= &buf
[1]; *tmp
; tmp
++)
4513 target_crc
= target_crc
* 16 + fromhex (*tmp
);
4515 printf_filtered ("Section %s, range 0x%s -- 0x%s: ",
4516 sectname
, paddr (lma
), paddr (lma
+ size
));
4517 if (host_crc
== target_crc
)
4518 printf_filtered ("matched.\n");
4521 printf_filtered ("MIS-MATCHED!\n");
4525 do_cleanups (old_chain
);
4528 warning ("One or more sections of the remote executable does not match\n\
4529 the loaded file\n");
4530 if (args
&& !matched
)
4531 printf_filtered ("No loaded section named '%s'.\n", args
);
4535 remote_query (query_type
, buf
, outbuf
, bufsiz
)
4542 char *buf2
= alloca (PBUFSIZ
);
4543 char *p2
= &buf2
[0];
4546 error ("null pointer to remote bufer size specified");
4548 /* minimum outbuf size is PBUFSIZ - if bufsiz is not large enough let
4549 the caller know and return what the minimum size is */
4550 /* Note: a zero bufsiz can be used to query the minimum buffer size */
4551 if (*bufsiz
< PBUFSIZ
)
4557 /* except for querying the minimum buffer size, target must be open */
4559 error ("remote query is only available after target open");
4561 /* we only take uppercase letters as query types, at least for now */
4562 if ((query_type
< 'A') || (query_type
> 'Z'))
4563 error ("invalid remote query type");
4566 error ("null remote query specified");
4569 error ("remote query requires a buffer to receive data");
4576 /* we used one buffer char for the remote protocol q command and another
4577 for the query type. As the remote protocol encapsulation uses 4 chars
4578 plus one extra in case we are debugging (remote_debug),
4579 we have PBUFZIZ - 7 left to pack the query string */
4581 while (buf
[i
] && (i
< (PBUFSIZ
- 8)))
4583 /* bad caller may have sent forbidden characters */
4584 if ((!isprint (buf
[i
])) || (buf
[i
] == '$') || (buf
[i
] == '#'))
4585 error ("illegal characters in query string");
4593 error ("query larger than available buffer");
4599 getpkt (outbuf
, *bufsiz
, 0);
4605 remote_rcmd (char *command
,
4606 struct gdb_file
*outbuf
)
4609 char *buf
= alloca (PBUFSIZ
);
4613 error ("remote rcmd is only available after target open");
4615 /* Send a NULL command across as an empty command */
4616 if (command
== NULL
)
4619 /* The query prefix */
4620 strcpy (buf
, "qRcmd,");
4621 p
= strchr (buf
, '\0');
4623 if ((strlen (buf
) + strlen (command
) * 2 + 8/*misc*/) > PBUFSIZ
)
4624 error ("\"monitor\" command ``%s'' is too long\n", command
);
4626 /* Encode the actual command */
4627 for (i
= 0; command
[i
]; i
++)
4629 *p
++ = tohex ((command
[i
] >> 4) & 0xf);
4630 *p
++ = tohex (command
[i
] & 0xf);
4634 if (putpkt (buf
) < 0)
4635 error ("Communication problem with target\n");
4637 /* get/display the response */
4640 /* XXX - see also tracepoint.c:remote_get_noisy_reply() */
4642 getpkt (buf
, PBUFSIZ
, 0);
4644 error ("Target does not support this command\n");
4645 if (buf
[0] == 'O' && buf
[1] != 'K')
4647 remote_console_output (buf
+ 1); /* 'O' message from stub */
4650 if (strcmp (buf
, "OK") == 0)
4652 if (strlen (buf
) == 3 && buf
[0] == 'E'
4653 && isdigit (buf
[1]) && isdigit (buf
[2]))
4655 error ("Protocol error with Rcmd");
4657 for (p
= buf
; p
[0] != '\0' && p
[1] != '\0'; p
+= 2)
4659 char c
= (fromhex (p
[0]) << 4) + fromhex (p
[1]);
4660 fputc_unfiltered (c
, outbuf
);
4667 packet_command (args
, from_tty
)
4671 char *buf
= alloca (PBUFSIZ
);
4674 error ("command can only be used with remote target");
4677 error ("remote-packet command requires packet text as argument");
4679 puts_filtered ("sending: ");
4680 print_packet (args
);
4681 puts_filtered ("\n");
4684 getpkt (buf
, PBUFSIZ
, 0);
4685 puts_filtered ("received: ");
4687 puts_filtered ("\n");
4691 /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------------- */
4693 static void display_thread_info
PARAMS ((struct gdb_ext_thread_info
* info
));
4695 static void threadset_test_cmd
PARAMS ((char *cmd
, int tty
));
4697 static void threadalive_test
PARAMS ((char *cmd
, int tty
));
4699 static void threadlist_test_cmd
PARAMS ((char *cmd
, int tty
));
4701 int get_and_display_threadinfo
PARAMS ((threadref
* ref
));
4703 static void threadinfo_test_cmd
PARAMS ((char *cmd
, int tty
));
4705 static int thread_display_step
PARAMS ((threadref
* ref
, void *context
));
4707 static void threadlist_update_test_cmd
PARAMS ((char *cmd
, int tty
));
4709 static void init_remote_threadtests
PARAMS ((void));
4711 #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid */
4714 threadset_test_cmd (cmd
, tty
)
4718 int sample_thread
= SAMPLE_THREAD
;
4720 printf_filtered ("Remote threadset test\n");
4721 set_thread (sample_thread
, 1);
4726 threadalive_test (cmd
, tty
)
4730 int sample_thread
= SAMPLE_THREAD
;
4732 if (remote_thread_alive (sample_thread
))
4733 printf_filtered ("PASS: Thread alive test\n");
4735 printf_filtered ("FAIL: Thread alive test\n");
4738 void output_threadid
PARAMS ((char *title
, threadref
* ref
));
4741 output_threadid (title
, ref
)
4747 pack_threadid (&hexid
[0], ref
); /* Convert threead id into hex */
4749 printf_filtered ("%s %s\n", title
, (&hexid
[0]));
4753 threadlist_test_cmd (cmd
, tty
)
4758 threadref nextthread
;
4759 int done
, result_count
;
4760 threadref threadlist
[3];
4762 printf_filtered ("Remote Threadlist test\n");
4763 if (!remote_get_threadlist (startflag
, &nextthread
, 3, &done
,
4764 &result_count
, &threadlist
[0]))
4765 printf_filtered ("FAIL: threadlist test\n");
4768 threadref
*scan
= threadlist
;
4769 threadref
*limit
= scan
+ result_count
;
4771 while (scan
< limit
)
4772 output_threadid (" thread ", scan
++);
4777 display_thread_info (info
)
4778 struct gdb_ext_thread_info
*info
;
4780 output_threadid ("Threadid: ", &info
->threadid
);
4781 printf_filtered ("Name: %s\n ", info
->shortname
);
4782 printf_filtered ("State: %s\n", info
->display
);
4783 printf_filtered ("other: %s\n\n", info
->more_display
);
4787 get_and_display_threadinfo (ref
)
4792 struct gdb_ext_thread_info threadinfo
;
4794 set
= TAG_THREADID
| TAG_EXISTS
| TAG_THREADNAME
4795 | TAG_MOREDISPLAY
| TAG_DISPLAY
;
4796 if (0 != (result
= remote_get_threadinfo (ref
, set
, &threadinfo
)))
4797 display_thread_info (&threadinfo
);
4802 threadinfo_test_cmd (cmd
, tty
)
4806 int athread
= SAMPLE_THREAD
;
4810 int_to_threadref (&thread
, athread
);
4811 printf_filtered ("Remote Threadinfo test\n");
4812 if (!get_and_display_threadinfo (&thread
))
4813 printf_filtered ("FAIL cannot get thread info\n");
4817 thread_display_step (ref
, context
)
4821 /* output_threadid(" threadstep ",ref); *//* simple test */
4822 return get_and_display_threadinfo (ref
);
4826 threadlist_update_test_cmd (cmd
, tty
)
4830 printf_filtered ("Remote Threadlist update test\n");
4831 remote_threadlist_iterator (thread_display_step
, 0, CRAZY_MAX_THREADS
);
4835 init_remote_threadtests (void)
4837 add_com ("tlist", class_obscure
, threadlist_test_cmd
,
4838 "Fetch and print the remote list of thread identifiers, one pkt only");
4839 add_com ("tinfo", class_obscure
, threadinfo_test_cmd
,
4840 "Fetch and display info about one thread");
4841 add_com ("tset", class_obscure
, threadset_test_cmd
,
4842 "Test setting to a different thread");
4843 add_com ("tupd", class_obscure
, threadlist_update_test_cmd
,
4844 "Iterate through updating all remote thread info");
4845 add_com ("talive", class_obscure
, threadalive_test
,
4846 " Remote thread alive test ");
4854 remote_ops
.to_shortname
= "remote";
4855 remote_ops
.to_longname
= "Remote serial target in gdb-specific protocol";
4857 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
4858 Specify the serial device it is connected to (e.g. /dev/ttya).";
4859 remote_ops
.to_open
= remote_open
;
4860 remote_ops
.to_close
= remote_close
;
4861 remote_ops
.to_detach
= remote_detach
;
4862 remote_ops
.to_resume
= remote_resume
;
4863 remote_ops
.to_wait
= remote_wait
;
4864 remote_ops
.to_fetch_registers
= remote_fetch_registers
;
4865 remote_ops
.to_store_registers
= remote_store_registers
;
4866 remote_ops
.to_prepare_to_store
= remote_prepare_to_store
;
4867 remote_ops
.to_xfer_memory
= remote_xfer_memory
;
4868 remote_ops
.to_files_info
= remote_files_info
;
4869 remote_ops
.to_insert_breakpoint
= remote_insert_breakpoint
;
4870 remote_ops
.to_remove_breakpoint
= remote_remove_breakpoint
;
4871 remote_ops
.to_kill
= remote_kill
;
4872 remote_ops
.to_load
= generic_load
;
4873 remote_ops
.to_mourn_inferior
= remote_mourn
;
4874 remote_ops
.to_thread_alive
= remote_thread_alive
;
4875 remote_ops
.to_find_new_threads
= remote_threads_info
;
4876 remote_ops
.to_stop
= remote_stop
;
4877 remote_ops
.to_query
= remote_query
;
4878 remote_ops
.to_rcmd
= remote_rcmd
;
4879 remote_ops
.to_stratum
= process_stratum
;
4880 remote_ops
.to_has_all_memory
= 1;
4881 remote_ops
.to_has_memory
= 1;
4882 remote_ops
.to_has_stack
= 1;
4883 remote_ops
.to_has_registers
= 1;
4884 remote_ops
.to_has_execution
= 1;
4885 remote_ops
.to_has_thread_control
= tc_schedlock
; /* can lock scheduler */
4886 remote_ops
.to_magic
= OPS_MAGIC
;
4889 /* Set up the extended remote vector by making a copy of the standard
4890 remote vector and adding to it. */
4893 init_extended_remote_ops ()
4895 extended_remote_ops
= remote_ops
;
4897 extended_remote_ops
.to_shortname
= "extended-remote";
4898 extended_remote_ops
.to_longname
=
4899 "Extended remote serial target in gdb-specific protocol";
4900 extended_remote_ops
.to_doc
=
4901 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
4902 Specify the serial device it is connected to (e.g. /dev/ttya).",
4903 extended_remote_ops
.to_open
= extended_remote_open
;
4904 extended_remote_ops
.to_create_inferior
= extended_remote_create_inferior
;
4905 extended_remote_ops
.to_mourn_inferior
= extended_remote_mourn
;
4909 * Command: info remote-process
4911 * This implements Cisco's version of the "info proc" command.
4913 * This query allows the target stub to return an arbitrary string
4914 * (or strings) giving arbitrary information about the target process.
4915 * This is optional; the target stub isn't required to implement it.
4917 * Syntax: qfProcessInfo request first string
4918 * qsProcessInfo request subsequent string
4919 * reply: 'O'<hex-encoded-string>
4920 * 'l' last reply (empty)
4924 remote_info_process (char *args
, int from_tty
)
4926 char *buf
= alloca (PBUFSIZ
);
4928 if (remote_desc
== 0)
4929 error ("Command can only be used when connected to the remote target.");
4931 putpkt ("qfProcessInfo");
4932 getpkt (buf
, PBUFSIZ
, 0);
4934 return; /* Silently: target does not support this feature. */
4937 error ("info proc: target error.");
4939 while (buf
[0] == 'O') /* Capitol-O packet */
4941 remote_console_output (&buf
[1]);
4942 putpkt ("qsProcessInfo");
4943 getpkt (buf
, PBUFSIZ
, 0);
4952 remote_cisco_open (char *name
, int from_tty
)
4956 "To open a remote debug connection, you need to specify what \n\
4957 device is attached to the remote system (e.g. host:port).");
4959 /* See FIXME above */
4960 wait_forever_enabled_p
= 1;
4962 target_preopen (from_tty
);
4964 unpush_target (&remote_cisco_ops
);
4966 remote_dcache
= dcache_init (remote_read_bytes
, remote_write_bytes
);
4968 remote_desc
= SERIAL_OPEN (name
);
4970 perror_with_name (name
);
4973 * If a baud rate was specified on the gdb command line it will
4974 * be greater than the initial value of -1. If it is, use it otherwise
4978 baud_rate
= (baud_rate
> 0) ? baud_rate
: 9600;
4979 if (SERIAL_SETBAUDRATE (remote_desc
, baud_rate
))
4981 SERIAL_CLOSE (remote_desc
);
4982 perror_with_name (name
);
4985 SERIAL_RAW (remote_desc
);
4987 /* If there is something sitting in the buffer we might take it as a
4988 response to a command, which would be bad. */
4989 SERIAL_FLUSH_INPUT (remote_desc
);
4993 puts_filtered ("Remote debugging using ");
4994 puts_filtered (name
);
4995 puts_filtered ("\n");
4998 remote_cisco_mode
= 1;
5000 push_target (&remote_cisco_ops
); /* Switch to using cisco target now */
5002 init_packet_config (&remote_protocol_P
);
5003 init_packet_config (&remote_protocol_Z
);
5005 general_thread
= -2;
5006 continue_thread
= -2;
5008 /* Force remote_write_bytes to check whether target supports
5009 binary downloading. */
5010 init_packet_config (&remote_protocol_binary_download
);
5012 /* Without this, some commands which require an active target (such
5013 as kill) won't work. This variable serves (at least) double duty
5014 as both the pid of the target process (if it has such), and as a
5015 flag indicating that a target is active. These functions should
5016 be split out into seperate variables, especially since GDB will
5017 someday have a notion of debugging several processes. */
5018 inferior_pid
= MAGIC_NULL_PID
;
5020 /* Start the remote connection; if error (0), discard this target. */
5022 if (!catch_errors (remote_start_remote_dummy
, (char *) 0,
5023 "Couldn't establish connection to remote target\n",
5032 remote_cisco_close (int quitting
)
5034 remote_cisco_mode
= 0;
5035 remote_close (quitting
);
5042 remote_mourn_1 (&remote_cisco_ops
);
5054 /* shared between readsocket() and readtty() */
5055 static char *tty_input
;
5057 static int escape_count
;
5058 static int echo_check
;
5059 extern int quit_flag
;
5066 /* Loop until the socket doesn't have any more data */
5068 while ((data
= readchar (0)) >= 0)
5070 /* Check for the escape sequence */
5073 /* If this is the fourth escape, get out */
5074 if (++escape_count
== 4)
5079 { /* This is a '|', but not the fourth in a row.
5080 Continue without echoing it. If it isn't actually
5081 one of four in a row, it'll be echoed later. */
5088 /* Ensure any pending '|'s are flushed. */
5090 for (; escape_count
> 0; escape_count
--)
5094 if (data
== '\r') /* If this is a return character, */
5095 continue; /* - just supress it. */
5097 if (echo_check
!= -1) /* Check for echo of user input. */
5099 if (tty_input
[echo_check
] == data
)
5101 echo_check
++; /* Character matched user input: */
5102 continue; /* Continue without echoing it. */
5104 else if ((data
== '\n') && (tty_input
[echo_check
] == '\r'))
5105 { /* End of the line (and of echo checking). */
5106 echo_check
= -1; /* No more echo supression */
5107 continue; /* Continue without echoing. */
5110 { /* Failed check for echo of user input.
5111 We now have some suppressed output to flush! */
5114 for (j
= 0; j
< echo_check
; j
++)
5115 putchar (tty_input
[j
]);
5119 putchar (data
); /* Default case: output the char. */
5122 if (data
== SERIAL_TIMEOUT
) /* Timeout returned from readchar. */
5123 return READ_MORE
; /* Try to read some more */
5125 return FATAL_ERROR
; /* Trouble, bail out */
5133 /* First, read a buffer full from the terminal */
5134 tty_bytecount
= read (fileno (stdin
), tty_input
, sizeof (tty_input
) - 1);
5135 if (tty_bytecount
== -1)
5137 perror ("readtty: read failed");
5141 /* Remove a quoted newline. */
5142 if (tty_input
[tty_bytecount
- 1] == '\n' &&
5143 tty_input
[tty_bytecount
- 2] == '\\') /* line ending in backslash */
5145 tty_input
[--tty_bytecount
] = 0; /* remove newline */
5146 tty_input
[--tty_bytecount
] = 0; /* remove backslash */
5149 /* Turn trailing newlines into returns */
5150 if (tty_input
[tty_bytecount
- 1] == '\n')
5151 tty_input
[tty_bytecount
- 1] = '\r';
5153 /* If the line consists of a ~, enter debugging mode. */
5154 if ((tty_input
[0] == '~') && (tty_bytecount
== 2))
5157 /* Make this a zero terminated string and write it out */
5158 tty_input
[tty_bytecount
] = 0;
5159 if (SERIAL_WRITE (remote_desc
, tty_input
, tty_bytecount
))
5161 perror_with_name ("readtty: write failed");
5171 fd_set input
; /* file descriptors for select */
5172 int tablesize
; /* max number of FDs for select */
5176 extern int escape_count
; /* global shared by readsocket */
5177 extern int echo_check
; /* ditto */
5182 tablesize
= 8 * sizeof (input
);
5186 /* Check for anything from our socket - doesn't block. Note that
5187 this must be done *before* the select as there may be
5188 buffered I/O waiting to be processed. */
5190 if ((status
= readsocket ()) == FATAL_ERROR
)
5192 error ("Debugging terminated by communications error");
5194 else if (status
!= READ_MORE
)
5199 fflush (stdout
); /* Flush output before blocking */
5201 /* Now block on more socket input or TTY input */
5204 FD_SET (fileno (stdin
), &input
);
5205 FD_SET (DEPRECATED_SERIAL_FD (remote_desc
), &input
);
5207 status
= select (tablesize
, &input
, 0, 0, 0);
5208 if ((status
== -1) && (errno
!= EINTR
))
5210 error ("Communications error on select %d", errno
);
5213 /* Handle Control-C typed */
5217 if ((++quit_count
) == 2)
5219 if (query ("Interrupt GDB? "))
5221 printf_filtered ("Interrupted by user.\n");
5222 return_to_top_level (RETURN_QUIT
);
5229 SERIAL_SEND_BREAK (remote_desc
);
5231 SERIAL_WRITE (remote_desc
, "\003", 1);
5236 /* Handle console input */
5238 if (FD_ISSET (fileno (stdin
), &input
))
5242 status
= readtty ();
5243 if (status
== READ_MORE
)
5246 return status
; /* telnet session ended */
5252 remote_cisco_wait (int pid
, struct target_waitstatus
*status
)
5254 if (minitelnet () != ENTER_DEBUG
)
5256 error ("Debugging session terminated by protocol error");
5259 return remote_wait (pid
, status
);
5263 init_remote_cisco_ops ()
5265 remote_cisco_ops
.to_shortname
= "cisco";
5266 remote_cisco_ops
.to_longname
= "Remote serial target in cisco-specific protocol";
5267 remote_cisco_ops
.to_doc
=
5268 "Use a remote machine via TCP, using a cisco-specific protocol.\n\
5269 Specify the serial device it is connected to (e.g. host:2020).";
5270 remote_cisco_ops
.to_open
= remote_cisco_open
;
5271 remote_cisco_ops
.to_close
= remote_cisco_close
;
5272 remote_cisco_ops
.to_detach
= remote_detach
;
5273 remote_cisco_ops
.to_resume
= remote_resume
;
5274 remote_cisco_ops
.to_wait
= remote_cisco_wait
;
5275 remote_cisco_ops
.to_fetch_registers
= remote_fetch_registers
;
5276 remote_cisco_ops
.to_store_registers
= remote_store_registers
;
5277 remote_cisco_ops
.to_prepare_to_store
= remote_prepare_to_store
;
5278 remote_cisco_ops
.to_xfer_memory
= remote_xfer_memory
;
5279 remote_cisco_ops
.to_files_info
= remote_files_info
;
5280 remote_cisco_ops
.to_insert_breakpoint
= remote_insert_breakpoint
;
5281 remote_cisco_ops
.to_remove_breakpoint
= remote_remove_breakpoint
;
5282 remote_cisco_ops
.to_kill
= remote_kill
;
5283 remote_cisco_ops
.to_load
= generic_load
;
5284 remote_cisco_ops
.to_mourn_inferior
= remote_cisco_mourn
;
5285 remote_cisco_ops
.to_thread_alive
= remote_thread_alive
;
5286 remote_cisco_ops
.to_find_new_threads
= remote_threads_info
;
5287 remote_cisco_ops
.to_stratum
= process_stratum
;
5288 remote_cisco_ops
.to_has_all_memory
= 1;
5289 remote_cisco_ops
.to_has_memory
= 1;
5290 remote_cisco_ops
.to_has_stack
= 1;
5291 remote_cisco_ops
.to_has_registers
= 1;
5292 remote_cisco_ops
.to_has_execution
= 1;
5293 remote_cisco_ops
.to_magic
= OPS_MAGIC
;
5297 remote_can_async_p (void)
5299 /* We're async whenever the serial device is. */
5300 return (current_target
.to_async_mask_value
) && SERIAL_CAN_ASYNC_P (remote_desc
);
5304 remote_is_async_p (void)
5306 /* We're async whenever the serial device is. */
5307 return (current_target
.to_async_mask_value
) && SERIAL_IS_ASYNC_P (remote_desc
);
5310 /* Pass the SERIAL event on and up to the client. One day this code
5311 will be able to delay notifying the client of an event until the
5312 point where an entire packet has been received. */
5314 static void (*async_client_callback
) (enum inferior_event_type event_type
, void *context
);
5315 static void *async_client_context
;
5316 static serial_event_ftype remote_async_serial_handler
;
5319 remote_async_serial_handler (serial_t scb
, void *context
)
5321 /* Don't propogate error information up to the client. Instead let
5322 the client find out about the error by querying the target. */
5323 async_client_callback (INF_REG_EVENT
, async_client_context
);
5327 remote_async (void (*callback
) (enum inferior_event_type event_type
, void *context
), void *context
)
5329 if (current_target
.to_async_mask_value
== 0)
5330 internal_error ("Calling remote_async when async is masked");
5332 if (callback
!= NULL
)
5334 SERIAL_ASYNC (remote_desc
, remote_async_serial_handler
, NULL
);
5335 async_client_callback
= callback
;
5336 async_client_context
= context
;
5339 SERIAL_ASYNC (remote_desc
, NULL
, NULL
);
5342 /* Target async and target extended-async.
5344 This are temporary targets, until it is all tested. Eventually
5345 async support will be incorporated int the usual 'remote'
5349 init_remote_async_ops (void)
5351 remote_async_ops
.to_shortname
= "async";
5352 remote_async_ops
.to_longname
= "Remote serial target in async version of the gdb-specific protocol";
5353 remote_async_ops
.to_doc
=
5354 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
5355 Specify the serial device it is connected to (e.g. /dev/ttya).";
5356 remote_async_ops
.to_open
= remote_async_open
;
5357 remote_async_ops
.to_close
= remote_close
;
5358 remote_async_ops
.to_detach
= remote_async_detach
;
5359 remote_async_ops
.to_resume
= remote_async_resume
;
5360 remote_async_ops
.to_wait
= remote_async_wait
;
5361 remote_async_ops
.to_fetch_registers
= remote_fetch_registers
;
5362 remote_async_ops
.to_store_registers
= remote_store_registers
;
5363 remote_async_ops
.to_prepare_to_store
= remote_prepare_to_store
;
5364 remote_async_ops
.to_xfer_memory
= remote_xfer_memory
;
5365 remote_async_ops
.to_files_info
= remote_files_info
;
5366 remote_async_ops
.to_insert_breakpoint
= remote_insert_breakpoint
;
5367 remote_async_ops
.to_remove_breakpoint
= remote_remove_breakpoint
;
5368 remote_async_ops
.to_terminal_inferior
= remote_async_terminal_inferior
;
5369 remote_async_ops
.to_terminal_ours
= remote_async_terminal_ours
;
5370 remote_async_ops
.to_kill
= remote_async_kill
;
5371 remote_async_ops
.to_load
= generic_load
;
5372 remote_async_ops
.to_mourn_inferior
= remote_async_mourn
;
5373 remote_async_ops
.to_thread_alive
= remote_thread_alive
;
5374 remote_async_ops
.to_find_new_threads
= remote_threads_info
;
5375 remote_async_ops
.to_stop
= remote_stop
;
5376 remote_async_ops
.to_query
= remote_query
;
5377 remote_async_ops
.to_rcmd
= remote_rcmd
;
5378 remote_async_ops
.to_stratum
= process_stratum
;
5379 remote_async_ops
.to_has_all_memory
= 1;
5380 remote_async_ops
.to_has_memory
= 1;
5381 remote_async_ops
.to_has_stack
= 1;
5382 remote_async_ops
.to_has_registers
= 1;
5383 remote_async_ops
.to_has_execution
= 1;
5384 remote_async_ops
.to_has_thread_control
= tc_schedlock
; /* can lock scheduler */
5385 remote_async_ops
.to_can_async_p
= remote_can_async_p
;
5386 remote_async_ops
.to_is_async_p
= remote_is_async_p
;
5387 remote_async_ops
.to_async
= remote_async
;
5388 remote_async_ops
.to_async_mask_value
= 1;
5389 remote_async_ops
.to_magic
= OPS_MAGIC
;
5392 /* Set up the async extended remote vector by making a copy of the standard
5393 remote vector and adding to it. */
5396 init_extended_async_remote_ops (void)
5398 extended_async_remote_ops
= remote_async_ops
;
5400 extended_async_remote_ops
.to_shortname
= "extended-async";
5401 extended_async_remote_ops
.to_longname
=
5402 "Extended remote serial target in async gdb-specific protocol";
5403 extended_async_remote_ops
.to_doc
=
5404 "Use a remote computer via a serial line, using an async gdb-specific protocol.\n\
5405 Specify the serial device it is connected to (e.g. /dev/ttya).",
5406 extended_async_remote_ops
.to_open
= extended_remote_async_open
;
5407 extended_async_remote_ops
.to_create_inferior
= extended_remote_async_create_inferior
;
5408 extended_async_remote_ops
.to_mourn_inferior
= extended_remote_mourn
;
5412 set_remote_cmd (char *args
, int from_tty
)
5419 build_remote_gdbarch_data ()
5421 build_remote_packet_sizes ();
5424 tty_input
= xmalloc (PBUFSIZ
);
5425 remote_address_size
= TARGET_PTR_BIT
;
5429 _initialize_remote ()
5431 static struct cmd_list_element
*remote_set_cmdlist
;
5432 static struct cmd_list_element
*remote_show_cmdlist
;
5433 struct cmd_list_element
*tmpcmd
;
5435 /* architecture specific data */
5436 build_remote_gdbarch_data ();
5437 register_gdbarch_swap (&tty_input
, sizeof (&tty_input
), NULL
);
5438 register_remote_packet_sizes ();
5439 register_gdbarch_swap (&remote_address_size
,
5440 sizeof (&remote_address_size
), NULL
);
5441 register_gdbarch_swap (NULL
, 0, build_remote_gdbarch_data
);
5444 add_target (&remote_ops
);
5446 init_extended_remote_ops ();
5447 add_target (&extended_remote_ops
);
5449 init_remote_async_ops ();
5450 add_target (&remote_async_ops
);
5452 init_extended_async_remote_ops ();
5453 add_target (&extended_async_remote_ops
);
5455 init_remote_cisco_ops ();
5456 add_target (&remote_cisco_ops
);
5459 init_remote_threadtests ();
5462 add_prefix_cmd ("remote", class_maintenance
, set_remote_cmd
, "\
5463 Remote protocol specific variables\n\
5464 Configure various remote-protocol specific variables such as\n\
5465 the packets being used",
5466 &remote_set_cmdlist
, "set remote ",
5467 0/*allow-unknown*/, &setlist
);
5468 add_prefix_cmd ("remote", class_maintenance
, set_remote_cmd
, "\
5469 Remote protocol specific variables\n\
5470 Configure various remote-protocol specific variables such as\n\
5471 the packets being used",
5472 &remote_show_cmdlist
, "show remote ",
5473 0/*allow-unknown*/, &showlist
);
5475 add_cmd ("compare-sections", class_obscure
, compare_sections_command
,
5476 "Compare section data on target to the exec file.\n\
5477 Argument is a single section name (default: all loaded sections).",
5480 add_cmd ("packet", class_maintenance
, packet_command
,
5481 "Send an arbitrary packet to a remote target.\n\
5482 maintenance packet TEXT\n\
5483 If GDB is talking to an inferior via the GDB serial protocol, then\n\
5484 this command sends the string TEXT to the inferior, and displays the\n\
5485 response packet. GDB supplies the initial `$' character, and the\n\
5486 terminating `#' character and checksum.",
5490 (add_set_cmd ("remotetimeout", no_class
,
5491 var_integer
, (char *) &remote_timeout
,
5492 "Set timeout value for remote read.\n",
5497 (add_set_cmd ("remotebreak", no_class
,
5498 var_boolean
, (char *) &remote_break
,
5499 "Set whether to send break if interrupted.\n",
5503 /* Install commands for configuring memory read/write packets. */
5505 add_cmd ("remotewritesize", no_class
, set_memory_write_packet_size
,
5506 "Set the maximum number of bytes per memory write packet (deprecated).\n",
5508 add_cmd ("remotewritesize", no_class
, set_memory_write_packet_size
,
5509 "Show the maximum number of bytes per memory write packet (deprecated).\n",
5511 add_cmd ("memory-write-packet-size", no_class
,
5512 set_memory_write_packet_size
,
5513 "Set the maximum number of bytes per memory-write packet.\n"
5514 "Specify the number of bytes in a packet or 0 (zero) for the\n"
5515 "default packet size. The actual limit is further reduced\n"
5516 "dependent on the target. Specify ``fixed'' to disable the\n"
5517 "further restriction and ``limit'' to enable that restriction\n",
5518 &remote_set_cmdlist
);
5519 add_cmd ("memory-read-packet-size", no_class
,
5520 set_memory_read_packet_size
,
5521 "Set the maximum number of bytes per memory-read packet.\n"
5522 "Specify the number of bytes in a packet or 0 (zero) for the\n"
5523 "default packet size. The actual limit is further reduced\n"
5524 "dependent on the target. Specify ``fixed'' to disable the\n"
5525 "further restriction and ``limit'' to enable that restriction\n",
5526 &remote_set_cmdlist
);
5527 add_cmd ("memory-write-packet-size", no_class
,
5528 show_memory_write_packet_size
,
5529 "Show the maximum number of bytes per memory-write packet.\n",
5530 &remote_show_cmdlist
);
5531 add_cmd ("memory-read-packet-size", no_class
,
5532 show_memory_read_packet_size
,
5533 "Show the maximum number of bytes per memory-read packet.\n",
5534 &remote_show_cmdlist
);
5537 (add_set_cmd ("remoteaddresssize", class_obscure
,
5538 var_integer
, (char *) &remote_address_size
,
5539 "Set the maximum size of the address (in bits) \
5540 in a memory packet.\n",
5544 add_packet_config_cmd (&remote_protocol_binary_download
,
5545 "X", "binary-download",
5546 set_remote_protocol_binary_download_cmd
,
5547 show_remote_protocol_binary_download_cmd
,
5548 &remote_set_cmdlist
, &remote_show_cmdlist
);
5550 /* XXXX - should ``set remotebinarydownload'' be retained for
5553 (add_set_cmd ("remotebinarydownload", no_class
,
5554 var_boolean
, (char *) &remote_binary_download
,
5555 "Set binary downloads.\n", &setlist
),
5559 add_info ("remote-process", remote_info_process
,
5560 "Query the remote system for process info.");
5562 add_packet_config_cmd (&remote_protocol_P
, "P", "set-register",
5563 set_remote_protocol_P_packet_cmd
,
5564 show_remote_protocol_P_packet_cmd
,
5565 &remote_set_cmdlist
, &remote_show_cmdlist
);
5567 add_packet_config_cmd (&remote_protocol_Z
, "Z", "breakpoint",
5568 set_remote_protocol_Z_packet_cmd
,
5569 show_remote_protocol_Z_packet_cmd
,
5570 &remote_set_cmdlist
, &remote_show_cmdlist
);