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\n\
1925 (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).");
1927 /* See FIXME above */
1928 wait_forever_enabled_p
= 1;
1930 target_preopen (from_tty
);
1932 unpush_target (target
);
1934 remote_dcache
= dcache_init (remote_read_bytes
, remote_write_bytes
);
1936 remote_desc
= SERIAL_OPEN (name
);
1938 perror_with_name (name
);
1940 if (baud_rate
!= -1)
1942 if (SERIAL_SETBAUDRATE (remote_desc
, baud_rate
))
1944 SERIAL_CLOSE (remote_desc
);
1945 perror_with_name (name
);
1949 SERIAL_RAW (remote_desc
);
1951 /* If there is something sitting in the buffer we might take it as a
1952 response to a command, which would be bad. */
1953 SERIAL_FLUSH_INPUT (remote_desc
);
1957 puts_filtered ("Remote debugging using ");
1958 puts_filtered (name
);
1959 puts_filtered ("\n");
1961 push_target (target
); /* Switch to using remote target now */
1963 init_packet_config (&remote_protocol_P
);
1964 init_packet_config (&remote_protocol_Z
);
1966 general_thread
= -2;
1967 continue_thread
= -2;
1969 /* Force remote_write_bytes to check whether target supports
1970 binary downloading. */
1971 init_packet_config (&remote_protocol_binary_download
);
1973 /* Without this, some commands which require an active target (such
1974 as kill) won't work. This variable serves (at least) double duty
1975 as both the pid of the target process (if it has such), and as a
1976 flag indicating that a target is active. These functions should
1977 be split out into seperate variables, especially since GDB will
1978 someday have a notion of debugging several processes. */
1980 inferior_pid
= MAGIC_NULL_PID
;
1981 /* Start the remote connection; if error (0), discard this target.
1982 In particular, if the user quits, be sure to discard it
1983 (we'd be in an inconsistent state otherwise). */
1984 if (!catch_errors (remote_start_remote
, NULL
,
1985 "Couldn't establish connection to remote target\n",
1994 /* tell the remote that we're using the extended protocol. */
1995 char *buf
= alloca (PBUFSIZ
);
1997 getpkt (buf
, PBUFSIZ
, 0);
2001 /* Just like remote_open but with asynchronous support. */
2003 remote_async_open_1 (name
, from_tty
, target
, extended_p
)
2006 struct target_ops
*target
;
2010 error ("To open a remote debug connection, you need to specify what\n\
2011 serial device is attached to the remote system\n\
2012 (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).");
2014 target_preopen (from_tty
);
2016 unpush_target (target
);
2018 remote_dcache
= dcache_init (remote_read_bytes
, remote_write_bytes
);
2020 remote_desc
= SERIAL_OPEN (name
);
2022 perror_with_name (name
);
2024 if (baud_rate
!= -1)
2026 if (SERIAL_SETBAUDRATE (remote_desc
, baud_rate
))
2028 SERIAL_CLOSE (remote_desc
);
2029 perror_with_name (name
);
2033 SERIAL_RAW (remote_desc
);
2035 /* If there is something sitting in the buffer we might take it as a
2036 response to a command, which would be bad. */
2037 SERIAL_FLUSH_INPUT (remote_desc
);
2041 puts_filtered ("Remote debugging using ");
2042 puts_filtered (name
);
2043 puts_filtered ("\n");
2046 push_target (target
); /* Switch to using remote target now */
2048 init_packet_config (&remote_protocol_P
);
2049 init_packet_config (&remote_protocol_Z
);
2051 general_thread
= -2;
2052 continue_thread
= -2;
2054 /* Force remote_write_bytes to check whether target supports
2055 binary downloading. */
2056 init_packet_config (&remote_protocol_binary_download
);
2058 /* Without this, some commands which require an active target (such
2059 as kill) won't work. This variable serves (at least) double duty
2060 as both the pid of the target process (if it has such), and as a
2061 flag indicating that a target is active. These functions should
2062 be split out into seperate variables, especially since GDB will
2063 someday have a notion of debugging several processes. */
2064 inferior_pid
= MAGIC_NULL_PID
;
2066 /* With this target we start out by owning the terminal. */
2067 remote_async_terminal_ours_p
= 1;
2069 /* FIXME: cagney/1999-09-23: During the initial connection it is
2070 assumed that the target is already ready and able to respond to
2071 requests. Unfortunatly remote_start_remote() eventually calls
2072 wait_for_inferior() with no timeout. wait_forever_enabled_p gets
2073 around this. Eventually a mechanism that allows
2074 wait_for_inferior() to expect/get timeouts will be
2076 wait_forever_enabled_p
= 0;
2078 /* Start the remote connection; if error (0), discard this target.
2079 In particular, if the user quits, be sure to discard it
2080 (we'd be in an inconsistent state otherwise). */
2081 if (!catch_errors (remote_start_remote
, NULL
,
2082 "Couldn't establish connection to remote target\n",
2086 wait_forever_enabled_p
= 1;
2090 wait_forever_enabled_p
= 1;
2094 /* tell the remote that we're using the extended protocol. */
2095 char *buf
= alloca (PBUFSIZ
);
2097 getpkt (buf
, PBUFSIZ
, 0);
2101 /* This takes a program previously attached to and detaches it. After
2102 this is done, GDB can be used to debug some other program. We
2103 better not have left any breakpoints in the target program or it'll
2104 die when it hits one. */
2107 remote_detach (args
, from_tty
)
2111 char *buf
= alloca (PBUFSIZ
);
2114 error ("Argument given to \"detach\" when remotely debugging.");
2116 /* Tell the remote target to detach. */
2118 remote_send (buf
, PBUFSIZ
);
2122 puts_filtered ("Ending remote debugging.\n");
2126 /* Same as remote_detach, but with async support. */
2128 remote_async_detach (args
, from_tty
)
2132 char *buf
= alloca (PBUFSIZ
);
2135 error ("Argument given to \"detach\" when remotely debugging.");
2137 /* Tell the remote target to detach. */
2139 remote_send (buf
, PBUFSIZ
);
2141 /* Unregister the file descriptor from the event loop. */
2142 if (target_is_async_p ())
2143 SERIAL_ASYNC (remote_desc
, NULL
, 0);
2147 puts_filtered ("Ending remote debugging.\n");
2150 /* Convert hex digit A to a number. */
2156 if (a
>= '0' && a
<= '9')
2158 else if (a
>= 'a' && a
<= 'f')
2159 return a
- 'a' + 10;
2160 else if (a
>= 'A' && a
<= 'F')
2161 return a
- 'A' + 10;
2163 error ("Reply contains invalid hex digit %d", a
);
2166 /* Convert number NIB to a hex digit. */
2175 return 'a' + nib
- 10;
2178 /* Tell the remote machine to resume. */
2180 static enum target_signal last_sent_signal
= TARGET_SIGNAL_0
;
2182 static int last_sent_step
;
2185 remote_resume (pid
, step
, siggnal
)
2187 enum target_signal siggnal
;
2189 char *buf
= alloca (PBUFSIZ
);
2192 set_thread (0, 0); /* run any thread */
2194 set_thread (pid
, 0); /* run this thread */
2196 dcache_flush (remote_dcache
);
2198 last_sent_signal
= siggnal
;
2199 last_sent_step
= step
;
2201 /* A hook for when we need to do something at the last moment before
2203 if (target_resume_hook
)
2204 (*target_resume_hook
) ();
2206 if (siggnal
!= TARGET_SIGNAL_0
)
2208 buf
[0] = step
? 'S' : 'C';
2209 buf
[1] = tohex (((int) siggnal
>> 4) & 0xf);
2210 buf
[2] = tohex ((int) siggnal
& 0xf);
2214 strcpy (buf
, step
? "s" : "c");
2219 /* Same as remote_resume, but with async support. */
2221 remote_async_resume (pid
, step
, siggnal
)
2223 enum target_signal siggnal
;
2225 char *buf
= alloca (PBUFSIZ
);
2228 set_thread (0, 0); /* run any thread */
2230 set_thread (pid
, 0); /* run this thread */
2232 dcache_flush (remote_dcache
);
2234 last_sent_signal
= siggnal
;
2235 last_sent_step
= step
;
2237 /* A hook for when we need to do something at the last moment before
2239 if (target_resume_hook
)
2240 (*target_resume_hook
) ();
2242 if (siggnal
!= TARGET_SIGNAL_0
)
2244 buf
[0] = step
? 'S' : 'C';
2245 buf
[1] = tohex (((int) siggnal
>> 4) & 0xf);
2246 buf
[2] = tohex ((int) siggnal
& 0xf);
2250 strcpy (buf
, step
? "s" : "c");
2252 /* We are about to start executing the inferior, let's register it
2253 with the event loop. NOTE: this is the one place where all the
2254 execution commands end up. We could alternatively do this in each
2255 of the execution commands in infcmd.c.*/
2256 /* FIXME: ezannoni 1999-09-28: We may need to move this out of here
2257 into infcmd.c in order to allow inferior function calls to work
2258 NOT asynchronously. */
2259 if (event_loop_p
&& target_can_async_p ())
2260 target_async (inferior_event_handler
, 0);
2261 /* Tell the world that the target is now executing. */
2262 /* FIXME: cagney/1999-09-23: Is it the targets responsibility to set
2263 this? Instead, should the client of target just assume (for
2264 async targets) that the target is going to start executing? Is
2265 this information already found in the continuation block? */
2266 if (target_is_async_p ())
2267 target_executing
= 1;
2272 /* Set up the signal handler for SIGINT, while the target is
2273 executing, ovewriting the 'regular' SIGINT signal handler. */
2275 initialize_sigint_signal_handler ()
2277 sigint_remote_token
=
2278 create_async_signal_handler (async_remote_interrupt
, NULL
);
2279 signal (SIGINT
, handle_remote_sigint
);
2282 /* Signal handler for SIGINT, while the target is executing. */
2284 handle_remote_sigint (sig
)
2287 signal (sig
, handle_remote_sigint_twice
);
2288 sigint_remote_twice_token
=
2289 create_async_signal_handler (async_remote_interrupt_twice
, NULL
);
2290 mark_async_signal_handler_wrapper (sigint_remote_token
);
2293 /* Signal handler for SIGINT, installed after SIGINT has already been
2294 sent once. It will take effect the second time that the user sends
2297 handle_remote_sigint_twice (sig
)
2300 signal (sig
, handle_sigint
);
2301 sigint_remote_twice_token
=
2302 create_async_signal_handler (inferior_event_handler_wrapper
, NULL
);
2303 mark_async_signal_handler_wrapper (sigint_remote_twice_token
);
2306 /* Perform the real interruption of the target execution, in response
2309 async_remote_interrupt (arg
)
2310 gdb_client_data arg
;
2313 fprintf_unfiltered (gdb_stdlog
, "remote_interrupt called\n");
2318 /* Perform interrupt, if the first attempt did not succeed. Just give
2319 up on the target alltogether. */
2321 async_remote_interrupt_twice (arg
)
2322 gdb_client_data arg
;
2325 fprintf_unfiltered (gdb_stdlog
, "remote_interrupt_twice called\n");
2326 /* Do something only if the target was not killed by the previous
2328 if (target_executing
)
2331 signal (SIGINT
, handle_remote_sigint
);
2335 /* Reinstall the usual SIGINT handlers, after the target has
2338 cleanup_sigint_signal_handler (void *dummy
)
2340 signal (SIGINT
, handle_sigint
);
2341 if (sigint_remote_twice_token
)
2342 delete_async_signal_handler ((struct async_signal_handler
**) & sigint_remote_twice_token
);
2343 if (sigint_remote_token
)
2344 delete_async_signal_handler ((struct async_signal_handler
**) & sigint_remote_token
);
2347 /* Send ^C to target to halt it. Target will respond, and send us a
2349 static void (*ofunc
) PARAMS ((int));
2351 /* The command line interface's stop routine. This function is installed
2352 as a signal handler for SIGINT. The first time a user requests a
2353 stop, we call remote_stop to send a break or ^C. If there is no
2354 response from the target (it didn't stop when the user requested it),
2355 we ask the user if he'd like to detach from the target. */
2357 remote_interrupt (signo
)
2360 /* If this doesn't work, try more severe steps. */
2361 signal (signo
, remote_interrupt_twice
);
2364 fprintf_unfiltered (gdb_stdlog
, "remote_interrupt called\n");
2369 /* The user typed ^C twice. */
2372 remote_interrupt_twice (signo
)
2375 signal (signo
, ofunc
);
2377 signal (signo
, remote_interrupt
);
2380 /* This is the generic stop called via the target vector. When a target
2381 interrupt is requested, either by the command line or the GUI, we
2382 will eventually end up here. */
2386 /* Send a break or a ^C, depending on user preference. */
2388 fprintf_unfiltered (gdb_stdlog
, "remote_stop called\n");
2391 SERIAL_SEND_BREAK (remote_desc
);
2393 SERIAL_WRITE (remote_desc
, "\003", 1);
2396 /* Ask the user what to do when an interrupt is received. */
2401 target_terminal_ours ();
2403 if (query ("Interrupted while waiting for the program.\n\
2404 Give up (and stop debugging it)? "))
2406 target_mourn_inferior ();
2407 return_to_top_level (RETURN_QUIT
);
2410 target_terminal_inferior ();
2413 /* Enable/disable target terminal ownership. Most targets can use
2414 terminal groups to control terminal ownership. Remote targets are
2415 different in that explicit transfer of ownership to/from GDB/target
2419 remote_async_terminal_inferior (void)
2421 /* FIXME: cagney/1999-09-27: Shouldn't need to test for
2422 sync_execution here. This function should only be called when
2423 GDB is resuming the inferior in the forground. A background
2424 resume (``run&'') should leave GDB in control of the terminal and
2425 consequently should not call this code. */
2426 if (!sync_execution
)
2428 /* FIXME: cagney/1999-09-27: Closely related to the above. Make
2429 calls target_terminal_*() idenpotent. The event-loop GDB talking
2430 to an asynchronous target with a synchronous command calls this
2431 function from both event-top.c and infrun.c/infcmd.c. Once GDB
2432 stops trying to transfer the terminal to the target when it
2433 shouldn't this guard can go away. */
2434 if (!remote_async_terminal_ours_p
)
2436 delete_file_handler (input_fd
);
2437 remote_async_terminal_ours_p
= 0;
2438 initialize_sigint_signal_handler ();
2439 /* NOTE: At this point we could also register our selves as the
2440 recipient of all input. Any characters typed could then be
2441 passed on down to the target. */
2445 remote_async_terminal_ours (void)
2447 /* See FIXME in remote_async_terminal_inferior. */
2448 if (!sync_execution
)
2450 /* See FIXME in remote_async_terminal_inferior. */
2451 if (remote_async_terminal_ours_p
)
2453 cleanup_sigint_signal_handler (NULL
);
2454 add_file_handler (input_fd
, stdin_event_handler
, 0);
2455 remote_async_terminal_ours_p
= 1;
2458 /* If nonzero, ignore the next kill. */
2463 remote_console_output (char *msg
)
2467 for (p
= msg
; p
[0] && p
[1]; p
+= 2)
2470 char c
= fromhex (p
[0]) * 16 + fromhex (p
[1]);
2473 fputs_unfiltered (tb
, gdb_stdtarg
);
2475 gdb_flush (gdb_stdtarg
);
2478 /* Wait until the remote machine stops, then return,
2479 storing status in STATUS just as `wait' would.
2480 Returns "pid", which in the case of a multi-threaded
2481 remote OS, is the thread-id. */
2484 remote_wait (pid
, status
)
2486 struct target_waitstatus
*status
;
2488 unsigned char *buf
= alloca (PBUFSIZ
);
2489 int thread_num
= -1;
2491 status
->kind
= TARGET_WAITKIND_EXITED
;
2492 status
->value
.integer
= 0;
2498 ofunc
= signal (SIGINT
, remote_interrupt
);
2499 getpkt (buf
, PBUFSIZ
, 1);
2500 signal (SIGINT
, ofunc
);
2502 /* This is a hook for when we need to do something (perhaps the
2503 collection of trace data) every time the target stops. */
2504 if (target_wait_loop_hook
)
2505 (*target_wait_loop_hook
) ();
2509 case 'E': /* Error of some sort */
2510 warning ("Remote failure reply: %s", buf
);
2512 case 'T': /* Status with PC, SP, FP, ... */
2516 char regs
[MAX_REGISTER_RAW_SIZE
];
2518 /* Expedited reply, containing Signal, {regno, reg} repeat */
2519 /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where
2521 n... = register number
2522 r... = register contents
2524 p
= &buf
[3]; /* after Txx */
2531 /* Read the register number */
2532 regno
= strtol ((const char *) p
, &p_temp
, 16);
2533 p1
= (unsigned char *) p_temp
;
2535 if (p1
== p
) /* No register number present here */
2537 p1
= (unsigned char *) strchr ((const char *) p
, ':');
2539 warning ("Malformed packet(a) (missing colon): %s\n\
2542 if (strncmp ((const char *) p
, "thread", p1
- p
) == 0)
2544 p_temp
= unpack_varlen_hex (++p1
, &thread_num
);
2545 record_currthread (thread_num
);
2546 p
= (unsigned char *) p_temp
;
2554 warning ("Malformed packet(b) (missing colon): %s\n\
2558 if (regno
>= NUM_REGS
)
2559 warning ("Remote sent bad register number %ld: %s\n\
2563 for (i
= 0; i
< REGISTER_RAW_SIZE (regno
); i
++)
2565 if (p
[0] == 0 || p
[1] == 0)
2566 warning ("Remote reply is too short: %s", buf
);
2567 regs
[i
] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
2570 supply_register (regno
, regs
);
2575 warning ("Remote register badly formatted: %s", buf
);
2576 warning (" here: %s", p
);
2581 case 'S': /* Old style status, just signal only */
2582 status
->kind
= TARGET_WAITKIND_STOPPED
;
2583 status
->value
.sig
= (enum target_signal
)
2584 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
2588 /* Export Cisco kernel mode as a convenience variable
2589 (so that it can be used in the GDB prompt if desired). */
2591 if (cisco_kernel_mode
== 1)
2592 set_internalvar (lookup_internalvar ("cisco_kernel_mode"),
2593 value_from_string ("PDEBUG-"));
2594 cisco_kernel_mode
= 0;
2595 thread_num
= strtol ((const char *) &buf
[4], NULL
, 16);
2596 record_currthread (thread_num
);
2598 else if (buf
[3] == 'k')
2600 /* Export Cisco kernel mode as a convenience variable
2601 (so that it can be used in the GDB prompt if desired). */
2603 if (cisco_kernel_mode
== 1)
2604 set_internalvar (lookup_internalvar ("cisco_kernel_mode"),
2605 value_from_string ("KDEBUG-"));
2606 cisco_kernel_mode
= 1;
2609 case 'N': /* Cisco special: status and offsets */
2611 bfd_vma text_addr
, data_addr
, bss_addr
;
2612 bfd_signed_vma text_off
, data_off
, bss_off
;
2615 status
->kind
= TARGET_WAITKIND_STOPPED
;
2616 status
->value
.sig
= (enum target_signal
)
2617 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
2619 if (symfile_objfile
== NULL
)
2621 warning ("Relocation packet received with no symbol file. \
2626 /* Relocate object file. Buffer format is NAATT;DD;BB
2627 * where AA is the signal number, TT is the new text
2628 * address, DD * is the new data address, and BB is the
2629 * new bss address. */
2632 text_addr
= strtoul (p
, (char **) &p1
, 16);
2633 if (p1
== p
|| *p1
!= ';')
2634 warning ("Malformed relocation packet: Packet '%s'", buf
);
2636 data_addr
= strtoul (p
, (char **) &p1
, 16);
2637 if (p1
== p
|| *p1
!= ';')
2638 warning ("Malformed relocation packet: Packet '%s'", buf
);
2640 bss_addr
= strtoul (p
, (char **) &p1
, 16);
2642 warning ("Malformed relocation packet: Packet '%s'", buf
);
2644 if (remote_cisco_section_offsets (text_addr
, data_addr
, bss_addr
,
2645 &text_off
, &data_off
, &bss_off
)
2647 if (text_off
!= 0 || data_off
!= 0 || bss_off
!= 0)
2648 remote_cisco_objfile_relocate (text_off
, data_off
, bss_off
);
2652 case 'W': /* Target exited */
2654 /* The remote process exited. */
2655 status
->kind
= TARGET_WAITKIND_EXITED
;
2656 status
->value
.integer
= (fromhex (buf
[1]) << 4) + fromhex (buf
[2]);
2660 status
->kind
= TARGET_WAITKIND_SIGNALLED
;
2661 status
->value
.sig
= (enum target_signal
)
2662 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
2666 case 'O': /* Console output */
2667 remote_console_output (buf
+ 1);
2670 if (last_sent_signal
!= TARGET_SIGNAL_0
)
2672 /* Zero length reply means that we tried 'S' or 'C' and
2673 the remote system doesn't support it. */
2674 target_terminal_ours_for_output ();
2676 ("Can't send signals to this remote system. %s not sent.\n",
2677 target_signal_to_name (last_sent_signal
));
2678 last_sent_signal
= TARGET_SIGNAL_0
;
2679 target_terminal_inferior ();
2681 strcpy ((char *) buf
, last_sent_step
? "s" : "c");
2682 putpkt ((char *) buf
);
2685 /* else fallthrough */
2687 warning ("Invalid remote reply: %s", buf
);
2692 if (thread_num
!= -1)
2696 return inferior_pid
;
2699 /* Async version of remote_wait. */
2701 remote_async_wait (pid
, status
)
2703 struct target_waitstatus
*status
;
2705 unsigned char *buf
= alloca (PBUFSIZ
);
2706 int thread_num
= -1;
2708 status
->kind
= TARGET_WAITKIND_EXITED
;
2709 status
->value
.integer
= 0;
2715 if (!target_is_async_p ())
2716 ofunc
= signal (SIGINT
, remote_interrupt
);
2717 /* FIXME: cagney/1999-09-27: If we're in async mode we should
2718 _never_ wait for ever -> test on target_is_async_p().
2719 However, before we do that we need to ensure that the caller
2720 knows how to take the target into/out of async mode. */
2721 getpkt (buf
, PBUFSIZ
, wait_forever_enabled_p
);
2722 if (!target_is_async_p ())
2723 signal (SIGINT
, ofunc
);
2725 /* This is a hook for when we need to do something (perhaps the
2726 collection of trace data) every time the target stops. */
2727 if (target_wait_loop_hook
)
2728 (*target_wait_loop_hook
) ();
2732 case 'E': /* Error of some sort */
2733 warning ("Remote failure reply: %s", buf
);
2735 case 'T': /* Status with PC, SP, FP, ... */
2739 char regs
[MAX_REGISTER_RAW_SIZE
];
2741 /* Expedited reply, containing Signal, {regno, reg} repeat */
2742 /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where
2744 n... = register number
2745 r... = register contents
2747 p
= &buf
[3]; /* after Txx */
2754 /* Read the register number */
2755 regno
= strtol ((const char *) p
, &p_temp
, 16);
2756 p1
= (unsigned char *) p_temp
;
2758 if (p1
== p
) /* No register number present here */
2760 p1
= (unsigned char *) strchr ((const char *) p
, ':');
2762 warning ("Malformed packet(a) (missing colon): %s\n\
2765 if (strncmp ((const char *) p
, "thread", p1
- p
) == 0)
2767 p_temp
= unpack_varlen_hex (++p1
, &thread_num
);
2768 record_currthread (thread_num
);
2769 p
= (unsigned char *) p_temp
;
2777 warning ("Malformed packet(b) (missing colon): %s\n\
2781 if (regno
>= NUM_REGS
)
2782 warning ("Remote sent bad register number %ld: %s\n\
2786 for (i
= 0; i
< REGISTER_RAW_SIZE (regno
); i
++)
2788 if (p
[0] == 0 || p
[1] == 0)
2789 warning ("Remote reply is too short: %s", buf
);
2790 regs
[i
] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
2793 supply_register (regno
, regs
);
2798 warning ("Remote register badly formatted: %s", buf
);
2799 warning (" here: %s", p
);
2804 case 'S': /* Old style status, just signal only */
2805 status
->kind
= TARGET_WAITKIND_STOPPED
;
2806 status
->value
.sig
= (enum target_signal
)
2807 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
2811 /* Export Cisco kernel mode as a convenience variable
2812 (so that it can be used in the GDB prompt if desired). */
2814 if (cisco_kernel_mode
== 1)
2815 set_internalvar (lookup_internalvar ("cisco_kernel_mode"),
2816 value_from_string ("PDEBUG-"));
2817 cisco_kernel_mode
= 0;
2818 thread_num
= strtol ((const char *) &buf
[4], NULL
, 16);
2819 record_currthread (thread_num
);
2821 else if (buf
[3] == 'k')
2823 /* Export Cisco kernel mode as a convenience variable
2824 (so that it can be used in the GDB prompt if desired). */
2826 if (cisco_kernel_mode
== 1)
2827 set_internalvar (lookup_internalvar ("cisco_kernel_mode"),
2828 value_from_string ("KDEBUG-"));
2829 cisco_kernel_mode
= 1;
2832 case 'N': /* Cisco special: status and offsets */
2834 bfd_vma text_addr
, data_addr
, bss_addr
;
2835 bfd_signed_vma text_off
, data_off
, bss_off
;
2838 status
->kind
= TARGET_WAITKIND_STOPPED
;
2839 status
->value
.sig
= (enum target_signal
)
2840 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
2842 if (symfile_objfile
== NULL
)
2844 warning ("Relocation packet recieved with no symbol file. \
2849 /* Relocate object file. Buffer format is NAATT;DD;BB
2850 * where AA is the signal number, TT is the new text
2851 * address, DD * is the new data address, and BB is the
2852 * new bss address. */
2855 text_addr
= strtoul (p
, (char **) &p1
, 16);
2856 if (p1
== p
|| *p1
!= ';')
2857 warning ("Malformed relocation packet: Packet '%s'", buf
);
2859 data_addr
= strtoul (p
, (char **) &p1
, 16);
2860 if (p1
== p
|| *p1
!= ';')
2861 warning ("Malformed relocation packet: Packet '%s'", buf
);
2863 bss_addr
= strtoul (p
, (char **) &p1
, 16);
2865 warning ("Malformed relocation packet: Packet '%s'", buf
);
2867 if (remote_cisco_section_offsets (text_addr
, data_addr
, bss_addr
,
2868 &text_off
, &data_off
, &bss_off
)
2870 if (text_off
!= 0 || data_off
!= 0 || bss_off
!= 0)
2871 remote_cisco_objfile_relocate (text_off
, data_off
, bss_off
);
2875 case 'W': /* Target exited */
2877 /* The remote process exited. */
2878 status
->kind
= TARGET_WAITKIND_EXITED
;
2879 status
->value
.integer
= (fromhex (buf
[1]) << 4) + fromhex (buf
[2]);
2883 status
->kind
= TARGET_WAITKIND_SIGNALLED
;
2884 status
->value
.sig
= (enum target_signal
)
2885 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
2889 case 'O': /* Console output */
2890 remote_console_output (buf
+ 1);
2891 /* Return immediately to the event loop. The event loop will
2892 still be waiting on the inferior afterwards. */
2893 status
->kind
= TARGET_WAITKIND_IGNORE
;
2896 if (last_sent_signal
!= TARGET_SIGNAL_0
)
2898 /* Zero length reply means that we tried 'S' or 'C' and
2899 the remote system doesn't support it. */
2900 target_terminal_ours_for_output ();
2902 ("Can't send signals to this remote system. %s not sent.\n",
2903 target_signal_to_name (last_sent_signal
));
2904 last_sent_signal
= TARGET_SIGNAL_0
;
2905 target_terminal_inferior ();
2907 strcpy ((char *) buf
, last_sent_step
? "s" : "c");
2908 putpkt ((char *) buf
);
2911 /* else fallthrough */
2913 warning ("Invalid remote reply: %s", buf
);
2918 if (thread_num
!= -1)
2922 return inferior_pid
;
2925 /* Number of bytes of registers this stub implements. */
2927 static int register_bytes_found
;
2929 /* Read the remote registers into the block REGS. */
2930 /* Currently we just read all the registers, so we don't use regno. */
2934 remote_fetch_registers (regno
)
2937 char *buf
= alloca (PBUFSIZ
);
2940 char regs
[REGISTER_BYTES
];
2942 set_thread (inferior_pid
, 1);
2945 remote_send (buf
, PBUFSIZ
);
2947 /* Save the size of the packet sent to us by the target. Its used
2948 as a heuristic when determining the max size of packets that the
2949 target can safely receive. */
2950 if (actual_register_packet_size
== 0)
2951 actual_register_packet_size
= strlen (buf
);
2953 /* Unimplemented registers read as all bits zero. */
2954 memset (regs
, 0, REGISTER_BYTES
);
2956 /* We can get out of synch in various cases. If the first character
2957 in the buffer is not a hex character, assume that has happened
2958 and try to fetch another packet to read. */
2959 while ((buf
[0] < '0' || buf
[0] > '9')
2960 && (buf
[0] < 'a' || buf
[0] > 'f')
2961 && buf
[0] != 'x') /* New: unavailable register value */
2964 fprintf_unfiltered (gdb_stdlog
,
2965 "Bad register packet; fetching a new packet\n");
2966 getpkt (buf
, PBUFSIZ
, 0);
2969 /* Reply describes registers byte by byte, each byte encoded as two
2970 hex characters. Suck them all up, then supply them to the
2971 register cacheing/storage mechanism. */
2974 for (i
= 0; i
< REGISTER_BYTES
; i
++)
2980 warning ("Remote reply is of odd length: %s", buf
);
2981 /* Don't change register_bytes_found in this case, and don't
2982 print a second warning. */
2985 if (p
[0] == 'x' && p
[1] == 'x')
2986 regs
[i
] = 0; /* 'x' */
2988 regs
[i
] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
2992 if (i
!= register_bytes_found
)
2994 register_bytes_found
= i
;
2995 #ifdef REGISTER_BYTES_OK
2996 if (!REGISTER_BYTES_OK (i
))
2997 warning ("Remote reply is too short: %s", buf
);
3002 for (i
= 0; i
< NUM_REGS
; i
++)
3004 supply_register (i
, ®s
[REGISTER_BYTE (i
)]);
3005 if (buf
[REGISTER_BYTE (i
) * 2] == 'x')
3006 register_valid
[i
] = -1; /* register value not available */
3010 /* Prepare to store registers. Since we may send them all (using a
3011 'G' request), we have to read out the ones we don't want to change
3015 remote_prepare_to_store ()
3017 /* Make sure the entire registers array is valid. */
3018 switch (remote_protocol_P
.support
)
3020 case PACKET_DISABLE
:
3021 case PACKET_SUPPORT_UNKNOWN
:
3022 read_register_bytes (0, (char *) NULL
, REGISTER_BYTES
);
3029 /* Helper: Attempt to store REGNO using the P packet. Return fail IFF
3030 packet was not recognized. */
3033 store_register_using_P (int regno
)
3035 /* Try storing a single register. */
3036 char *buf
= alloca (PBUFSIZ
);
3041 sprintf (buf
, "P%x=", regno
);
3042 p
= buf
+ strlen (buf
);
3043 regp
= ®isters
[REGISTER_BYTE (regno
)];
3044 for (i
= 0; i
< REGISTER_RAW_SIZE (regno
); ++i
)
3046 *p
++ = tohex ((regp
[i
] >> 4) & 0xf);
3047 *p
++ = tohex (regp
[i
] & 0xf);
3050 remote_send (buf
, PBUFSIZ
);
3052 return buf
[0] != '\0';
3056 /* Store register REGNO, or all registers if REGNO == -1, from the contents
3057 of REGISTERS. FIXME: ignores errors. */
3060 remote_store_registers (regno
)
3063 char *buf
= alloca (PBUFSIZ
);
3067 set_thread (inferior_pid
, 1);
3071 switch (remote_protocol_P
.support
)
3073 case PACKET_DISABLE
:
3076 if (store_register_using_P (regno
))
3079 error ("Protocol error: P packet not recognized by stub");
3080 case PACKET_SUPPORT_UNKNOWN
:
3081 if (store_register_using_P (regno
))
3083 /* The stub recognized the 'P' packet. Remember this. */
3084 remote_protocol_P
.support
= PACKET_ENABLE
;
3089 /* The stub does not support the 'P' packet. Use 'G'
3090 instead, and don't try using 'P' in the future (it
3091 will just waste our time). */
3092 remote_protocol_P
.support
= PACKET_DISABLE
;
3100 /* Command describes registers byte by byte,
3101 each byte encoded as two hex characters. */
3104 /* remote_prepare_to_store insures that register_bytes_found gets set. */
3105 for (i
= 0; i
< register_bytes_found
; i
++)
3107 *p
++ = tohex ((registers
[i
] >> 4) & 0xf);
3108 *p
++ = tohex (registers
[i
] & 0xf);
3112 remote_send (buf
, PBUFSIZ
);
3115 /* Use of the data cache *used* to be disabled because it loses for looking
3116 at and changing hardware I/O ports and the like. Accepting `volatile'
3117 would perhaps be one way to fix it. Another idea would be to use the
3118 executable file for the text segment (for all SEC_CODE sections?
3119 For all SEC_READONLY sections?). This has problems if you want to
3120 actually see what the memory contains (e.g. self-modifying code,
3121 clobbered memory, user downloaded the wrong thing).
3123 Because it speeds so much up, it's now enabled, if you're playing
3124 with registers you turn it of (set remotecache 0). */
3126 /* Read a word from remote address ADDR and return it.
3127 This goes through the data cache. */
3131 remote_fetch_word (addr
)
3134 return dcache_fetch (remote_dcache
, addr
);
3137 /* Write a word WORD into remote address ADDR.
3138 This goes through the data cache. */
3141 remote_store_word (addr
, word
)
3145 dcache_poke (remote_dcache
, addr
, word
);
3147 #endif /* 0 (unused?) */
3151 /* Return the number of hex digits in num. */
3159 for (i
= 0; num
!= 0; i
++)
3165 /* Set BUF to the minimum number of hex digits representing NUM. */
3168 hexnumstr (buf
, num
)
3172 int len
= hexnumlen (num
);
3173 return hexnumnstr (buf
, num
, len
);
3177 /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */
3180 hexnumnstr (buf
, num
, width
)
3189 for (i
= width
- 1; i
>= 0; i
--)
3191 buf
[i
] = "0123456789abcdef"[(num
& 0xf)];
3198 /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */
3201 remote_address_masked (addr
)
3204 if (remote_address_size
> 0
3205 && remote_address_size
< (sizeof (ULONGEST
) * 8))
3207 /* Only create a mask when that mask can safely be constructed
3208 in a ULONGEST variable. */
3210 mask
= (mask
<< remote_address_size
) - 1;
3216 /* Determine whether the remote target supports binary downloading.
3217 This is accomplished by sending a no-op memory write of zero length
3218 to the target at the specified address. It does not suffice to send
3219 the whole packet, since many stubs strip the eighth bit and subsequently
3220 compute a wrong checksum, which causes real havoc with remote_write_bytes.
3222 NOTE: This can still lose if the serial line is not eight-bit
3223 clean. In cases like this, the user should clear "remote
3227 check_binary_download (addr
)
3230 switch (remote_protocol_binary_download
.support
)
3232 case PACKET_DISABLE
:
3236 case PACKET_SUPPORT_UNKNOWN
:
3238 char *buf
= alloca (PBUFSIZ
);
3243 p
+= hexnumstr (p
, (ULONGEST
) addr
);
3245 p
+= hexnumstr (p
, (ULONGEST
) 0);
3249 putpkt_binary (buf
, (int) (p
- buf
));
3250 getpkt (buf
, PBUFSIZ
, 0);
3255 fprintf_unfiltered (gdb_stdlog
,
3256 "binary downloading NOT suppported by target\n");
3257 remote_protocol_binary_download
.support
= PACKET_DISABLE
;
3262 fprintf_unfiltered (gdb_stdlog
,
3263 "binary downloading suppported by target\n");
3264 remote_protocol_binary_download
.support
= PACKET_ENABLE
;
3271 /* Write memory data directly to the remote machine.
3272 This does not inform the data cache; the data cache uses this.
3273 MEMADDR is the address in the remote memory space.
3274 MYADDR is the address of the buffer in our space.
3275 LEN is the number of bytes.
3277 Returns number of bytes transferred, or 0 (setting errno) for
3278 error. Only transfer a single packet. */
3281 remote_write_bytes (CORE_ADDR memaddr
, char *myaddr
, int len
)
3284 int max_buf_size
; /* Max size of packet output buffer */
3286 unsigned char *plen
;
3292 /* Verify that the target can support a binary download */
3293 check_binary_download (memaddr
);
3295 /* Determine the max packet size. */
3296 max_buf_size
= get_memory_write_packet_size ();
3297 sizeof_buf
= max_buf_size
+ 1; /* Space for trailing NUL */
3298 buf
= alloca (sizeof_buf
);
3300 /* Subtract header overhead from max payload size - $M<memaddr>,<len>:#nn */
3301 max_buf_size
-= 2 + hexnumlen (memaddr
+ len
- 1) + 1 + hexnumlen (len
) + 4;
3303 /* construct "M"<memaddr>","<len>":" */
3304 /* sprintf (buf, "M%lx,%x:", (unsigned long) memaddr, todo); */
3307 /* Append [XM]. Compute a best guess of the number of bytes
3308 actually transfered. */
3309 switch (remote_protocol_binary_download
.support
)
3313 /* Best guess at number of bytes that will fit. */
3314 todo
= min (len
, max_buf_size
);
3316 case PACKET_DISABLE
:
3318 /* num bytes that will fit */
3319 todo
= min (len
, max_buf_size
/ 2);
3321 case PACKET_SUPPORT_UNKNOWN
:
3322 internal_error ("remote_write_bytes: bad switch");
3325 /* Append <memaddr> */
3326 memaddr
= remote_address_masked (memaddr
);
3327 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
3330 /* Append <len>. Retain the location/size of <len>. It may
3331 need to be adjusted once the packet body has been created. */
3333 plenlen
= hexnumstr (p
, (ULONGEST
) todo
);
3338 /* Append the packet body. */
3339 switch (remote_protocol_binary_download
.support
)
3342 /* Binary mode. Send target system values byte by byte, in
3343 increasing byte addresses. Only escape certain critical
3346 (nr_bytes
< todo
) && (p
- buf
) < (max_buf_size
- 2);
3349 switch (myaddr
[nr_bytes
] & 0xff)
3354 /* These must be escaped */
3356 *p
++ = (myaddr
[nr_bytes
] & 0xff) ^ 0x20;
3359 *p
++ = myaddr
[nr_bytes
] & 0xff;
3363 if (nr_bytes
< todo
)
3365 /* Escape chars have filled up the buffer prematurely,
3366 and we have actually sent fewer bytes than planned.
3367 Fix-up the length field of the packet. Use the same
3368 number of characters as before. */
3370 plen
+= hexnumnstr (plen
, (ULONGEST
) nr_bytes
, plenlen
);
3371 *plen
= ':'; /* overwrite \0 from hexnumnstr() */
3374 case PACKET_DISABLE
:
3375 /* Normal mode: Send target system values byte by byte, in
3376 increasing byte addresses. Each byte is encoded as a two hex
3378 for (nr_bytes
= 0; nr_bytes
< todo
; nr_bytes
++)
3380 *p
++ = tohex ((myaddr
[nr_bytes
] >> 4) & 0xf);
3381 *p
++ = tohex (myaddr
[nr_bytes
] & 0xf);
3385 case PACKET_SUPPORT_UNKNOWN
:
3386 internal_error ("remote_write_bytes: bad switch");
3389 putpkt_binary (buf
, (int) (p
- buf
));
3390 getpkt (buf
, sizeof_buf
, 0);
3394 /* There is no correspondance between what the remote protocol
3395 uses for errors and errno codes. We would like a cleaner way
3396 of representing errors (big enough to include errno codes,
3397 bfd_error codes, and others). But for now just return EIO. */
3402 /* Return NR_BYTES, not TODO, in case escape chars caused us to send fewer
3403 bytes than we'd planned. */
3407 /* Read memory data directly from the remote machine.
3408 This does not use the data cache; the data cache uses this.
3409 MEMADDR is the address in the remote memory space.
3410 MYADDR is the address of the buffer in our space.
3411 LEN is the number of bytes.
3413 Returns number of bytes transferred, or 0 for error. */
3415 /* NOTE: cagney/1999-10-18: This function (and its siblings in other
3416 remote targets) shouldn't attempt to read the entire buffer.
3417 Instead it should read a single packet worth of data and then
3418 return the byte size of that packet to the caller. The caller (its
3419 caller and its callers caller ;-) already contains code for
3420 handling partial reads. */
3423 remote_read_bytes (memaddr
, myaddr
, len
)
3429 int max_buf_size
; /* Max size of packet output buffer */
3433 /* Create a buffer big enough for this packet. */
3434 max_buf_size
= get_memory_read_packet_size ();
3435 sizeof_buf
= max_buf_size
+ 1; /* Space for trailing NUL */
3436 buf
= alloca (sizeof_buf
);
3445 todo
= min (len
, max_buf_size
/ 2); /* num bytes that will fit */
3447 /* construct "m"<memaddr>","<len>" */
3448 /* sprintf (buf, "m%lx,%x", (unsigned long) memaddr, todo); */
3449 memaddr
= remote_address_masked (memaddr
);
3452 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
3454 p
+= hexnumstr (p
, (ULONGEST
) todo
);
3458 getpkt (buf
, sizeof_buf
, 0);
3462 /* There is no correspondance between what the remote protocol uses
3463 for errors and errno codes. We would like a cleaner way of
3464 representing errors (big enough to include errno codes, bfd_error
3465 codes, and others). But for now just return EIO. */
3470 /* Reply describes memory byte by byte,
3471 each byte encoded as two hex characters. */
3474 for (i
= 0; i
< todo
; i
++)
3476 if (p
[0] == 0 || p
[1] == 0)
3477 /* Reply is short. This means that we were able to read
3478 only part of what we wanted to. */
3479 return i
+ (origlen
- len
);
3480 myaddr
[i
] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
3490 /* Read or write LEN bytes from inferior memory at MEMADDR,
3491 transferring to or from debugger address BUFFER. Write to inferior if
3492 SHOULD_WRITE is nonzero. Returns length of data written or read; 0
3495 #ifndef REMOTE_TRANSLATE_XFER_ADDRESS
3496 #define REMOTE_TRANSLATE_XFER_ADDRESS(MEM_ADDR, MEM_LEN, TARG_ADDR, TARG_LEN) \
3497 (*(TARG_ADDR) = (MEM_ADDR), *(TARG_LEN) = (MEM_LEN))
3502 remote_xfer_memory (mem_addr
, buffer
, mem_len
, should_write
, target
)
3507 struct target_ops
*target
; /* ignored */
3509 CORE_ADDR targ_addr
;
3511 REMOTE_TRANSLATE_XFER_ADDRESS (mem_addr
, mem_len
, &targ_addr
, &targ_len
);
3515 return dcache_xfer_memory (remote_dcache
, targ_addr
, buffer
,
3516 targ_len
, should_write
);
3521 /* Enable after 4.12. */
3524 remote_search (len
, data
, mask
, startaddr
, increment
, lorange
, hirange
3525 addr_found
, data_found
)
3529 CORE_ADDR startaddr
;
3533 CORE_ADDR
*addr_found
;
3536 if (increment
== -4 && len
== 4)
3538 long mask_long
, data_long
;
3539 long data_found_long
;
3540 CORE_ADDR addr_we_found
;
3541 char *buf
= alloca (PBUFSIZ
);
3542 long returned_long
[2];
3545 mask_long
= extract_unsigned_integer (mask
, len
);
3546 data_long
= extract_unsigned_integer (data
, len
);
3547 sprintf (buf
, "t%x:%x,%x", startaddr
, data_long
, mask_long
);
3549 getpkt (buf
, PBUFSIZ
, 0);
3552 /* The stub doesn't support the 't' request. We might want to
3553 remember this fact, but on the other hand the stub could be
3554 switched on us. Maybe we should remember it only until
3555 the next "target remote". */
3556 generic_search (len
, data
, mask
, startaddr
, increment
, lorange
,
3557 hirange
, addr_found
, data_found
);
3562 /* There is no correspondance between what the remote protocol uses
3563 for errors and errno codes. We would like a cleaner way of
3564 representing errors (big enough to include errno codes, bfd_error
3565 codes, and others). But for now just use EIO. */
3566 memory_error (EIO
, startaddr
);
3569 while (*p
!= '\0' && *p
!= ',')
3570 addr_we_found
= (addr_we_found
<< 4) + fromhex (*p
++);
3572 error ("Protocol error: short return for search");
3574 data_found_long
= 0;
3575 while (*p
!= '\0' && *p
!= ',')
3576 data_found_long
= (data_found_long
<< 4) + fromhex (*p
++);
3577 /* Ignore anything after this comma, for future extensions. */
3579 if (addr_we_found
< lorange
|| addr_we_found
>= hirange
)
3585 *addr_found
= addr_we_found
;
3586 *data_found
= store_unsigned_integer (data_we_found
, len
);
3589 generic_search (len
, data
, mask
, startaddr
, increment
, lorange
,
3590 hirange
, addr_found
, data_found
);
3595 remote_files_info (ignore
)
3596 struct target_ops
*ignore
;
3598 puts_filtered ("Debugging a target over a serial line.\n");
3601 /* Stuff for dealing with the packets which are part of this protocol.
3602 See comment at top of file for details. */
3604 /* Read a single character from the remote end, masking it down to 7 bits. */
3612 ch
= SERIAL_READCHAR (remote_desc
, timeout
);
3617 switch ((enum serial_rc
) ch
)
3620 target_mourn_inferior ();
3621 error ("Remote connection closed");
3624 perror_with_name ("Remote communication error");
3626 case SERIAL_TIMEOUT
:
3632 /* Send the command in BUF to the remote machine, and read the reply
3633 into BUF. Report an error if we get an error reply. */
3636 remote_send (char *buf
,
3640 getpkt (buf
, sizeof_buf
, 0);
3643 error ("Remote failure reply: %s", buf
);
3646 /* Display a null-terminated packet on stdout, for debugging, using C
3653 puts_filtered ("\"");
3654 fputstr_filtered (buf
, '"', gdb_stdout
);
3655 puts_filtered ("\"");
3662 return putpkt_binary (buf
, strlen (buf
));
3665 /* Send a packet to the remote machine, with error checking. The data
3666 of the packet is in BUF. The string in BUF can be at most PBUFSIZ - 5
3667 to account for the $, # and checksum, and for a possible /0 if we are
3668 debugging (remote_debug) and want to print the sent packet as a string */
3671 putpkt_binary (buf
, cnt
)
3676 unsigned char csum
= 0;
3677 char *buf2
= alloca (cnt
+ 6);
3678 long sizeof_junkbuf
= PBUFSIZ
;
3679 char *junkbuf
= alloca (sizeof_junkbuf
);
3685 /* Copy the packet into buffer BUF2, encapsulating it
3686 and giving it a checksum. */
3691 for (i
= 0; i
< cnt
; i
++)
3697 *p
++ = tohex ((csum
>> 4) & 0xf);
3698 *p
++ = tohex (csum
& 0xf);
3700 /* Send it over and over until we get a positive ack. */
3704 int started_error_output
= 0;
3709 fprintf_unfiltered (gdb_stdlog
, "Sending packet: ");
3710 fputstrn_unfiltered (buf2
, p
- buf2
, 0, gdb_stdlog
);
3711 fprintf_unfiltered (gdb_stdlog
, "...");
3712 gdb_flush (gdb_stdlog
);
3714 if (SERIAL_WRITE (remote_desc
, buf2
, p
- buf2
))
3715 perror_with_name ("putpkt: write failed");
3717 /* read until either a timeout occurs (-2) or '+' is read */
3720 ch
= readchar (remote_timeout
);
3727 case SERIAL_TIMEOUT
:
3729 if (started_error_output
)
3731 putchar_unfiltered ('\n');
3732 started_error_output
= 0;
3741 fprintf_unfiltered (gdb_stdlog
, "Ack\n");
3743 case SERIAL_TIMEOUT
:
3747 break; /* Retransmit buffer */
3750 /* It's probably an old response, and we're out of sync.
3751 Just gobble up the packet and ignore it. */
3752 getpkt (junkbuf
, sizeof_junkbuf
, 0);
3753 continue; /* Now, go look for + */
3758 if (!started_error_output
)
3760 started_error_output
= 1;
3761 fprintf_unfiltered (gdb_stdlog
, "putpkt: Junk: ");
3763 fputc_unfiltered (ch
& 0177, gdb_stdlog
);
3767 break; /* Here to retransmit */
3771 /* This is wrong. If doing a long backtrace, the user should be
3772 able to get out next time we call QUIT, without anything as
3773 violent as interrupt_query. If we want to provide a way out of
3774 here without getting to the next QUIT, it should be based on
3775 hitting ^C twice as in remote_wait. */
3785 static int remote_cisco_mode
;
3787 /* Come here after finding the start of the frame. Collect the rest
3788 into BUF, verifying the checksum, length, and handling run-length
3789 compression. No more than sizeof_buf-1 characters are read so that
3790 the buffer can be NUL terminated.
3792 Returns -1 on error, number of characters in buffer (ignoring the
3793 trailing NULL) on success. (could be extended to return one of the
3794 SERIAL status indications). */
3797 read_frame (char *buf
,
3809 /* ASSERT (bc < sizeof_buf - 1) - space for trailing NUL */
3810 c
= readchar (remote_timeout
);
3813 case SERIAL_TIMEOUT
:
3815 fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog
);
3819 fputs_filtered ("Saw new packet start in middle of old one\n",
3821 return -1; /* Start a new packet, count retries */
3824 unsigned char pktcsum
;
3828 pktcsum
= fromhex (readchar (remote_timeout
)) << 4;
3829 pktcsum
|= fromhex (readchar (remote_timeout
));
3831 if (csum
== pktcsum
)
3836 fprintf_filtered (gdb_stdlog
,
3837 "Bad checksum, sentsum=0x%x, csum=0x%x, buf=",
3839 fputs_filtered (buf
, gdb_stdlog
);
3840 fputs_filtered ("\n", gdb_stdlog
);
3842 /* Number of characters in buffer ignoring trailing
3846 case '*': /* Run length encoding */
3851 if (remote_cisco_mode
== 0)
3853 c
= readchar (remote_timeout
);
3855 repeat
= c
- ' ' + 3; /* Compute repeat count */
3859 /* Cisco's run-length encoding variant uses two
3860 hex chars to represent the repeat count. */
3862 c
= readchar (remote_timeout
);
3864 repeat
= fromhex (c
) << 4;
3865 c
= readchar (remote_timeout
);
3867 repeat
+= fromhex (c
);
3870 /* The character before ``*'' is repeated. */
3872 if (repeat
> 0 && repeat
<= 255
3874 && bc
+ repeat
< sizeof_buf
- 1)
3876 memset (&buf
[bc
], buf
[bc
- 1], repeat
);
3882 printf_filtered ("Repeat count %d too large for buffer: ", repeat
);
3883 puts_filtered (buf
);
3884 puts_filtered ("\n");
3888 if (bc
< sizeof_buf
- 1)
3896 puts_filtered ("Remote packet too long: ");
3897 puts_filtered (buf
);
3898 puts_filtered ("\n");
3905 /* Read a packet from the remote machine, with error checking, and
3906 store it in BUF. If FOREVER, wait forever rather than timing out;
3907 this is used (in synchronous mode) to wait for a target that is is
3908 executing user code to stop. */
3920 strcpy (buf
, "timeout");
3924 timeout
= watchdog
> 0 ? watchdog
: -1;
3928 timeout
= remote_timeout
;
3932 for (tries
= 1; tries
<= MAX_TRIES
; tries
++)
3934 /* This can loop forever if the remote side sends us characters
3935 continuously, but if it pauses, we'll get a zero from readchar
3936 because of timeout. Then we'll count that as a retry. */
3938 /* Note that we will only wait forever prior to the start of a packet.
3939 After that, we expect characters to arrive at a brisk pace. They
3940 should show up within remote_timeout intervals. */
3944 c
= readchar (timeout
);
3946 if (c
== SERIAL_TIMEOUT
)
3948 if (forever
) /* Watchdog went off? Kill the target. */
3951 target_mourn_inferior ();
3952 error ("Watchdog has expired. Target detached.\n");
3955 fputs_filtered ("Timed out.\n", gdb_stdlog
);
3961 /* We've found the start of a packet, now collect the data. */
3963 val
= read_frame (buf
, sizeof_buf
);
3969 fprintf_unfiltered (gdb_stdlog
, "Packet received: ");
3970 fputstr_unfiltered (buf
, 0, gdb_stdlog
);
3971 fprintf_unfiltered (gdb_stdlog
, "\n");
3973 SERIAL_WRITE (remote_desc
, "+", 1);
3977 /* Try the whole thing again. */
3979 SERIAL_WRITE (remote_desc
, "-", 1);
3982 /* We have tried hard enough, and just can't receive the packet. Give up. */
3984 printf_unfiltered ("Ignoring packet error, continuing...\n");
3985 SERIAL_WRITE (remote_desc
, "+", 1);
3991 /* For some mysterious reason, wait_for_inferior calls kill instead of
3992 mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */
3996 target_mourn_inferior ();
4000 /* Use catch_errors so the user can quit from gdb even when we aren't on
4001 speaking terms with the remote system. */
4002 catch_errors ((catch_errors_ftype
*) putpkt
, "k", "", RETURN_MASK_ERROR
);
4004 /* Don't wait for it to die. I'm not really sure it matters whether
4005 we do or not. For the existing stubs, kill is a noop. */
4006 target_mourn_inferior ();
4009 /* Async version of remote_kill. */
4011 remote_async_kill ()
4013 /* Unregister the file descriptor from the event loop. */
4014 if (target_is_async_p ())
4015 SERIAL_ASYNC (remote_desc
, NULL
, 0);
4017 /* For some mysterious reason, wait_for_inferior calls kill instead of
4018 mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */
4022 target_mourn_inferior ();
4026 /* Use catch_errors so the user can quit from gdb even when we aren't on
4027 speaking terms with the remote system. */
4028 catch_errors ((catch_errors_ftype
*) putpkt
, "k", "", RETURN_MASK_ERROR
);
4030 /* Don't wait for it to die. I'm not really sure it matters whether
4031 we do or not. For the existing stubs, kill is a noop. */
4032 target_mourn_inferior ();
4038 remote_mourn_1 (&remote_ops
);
4042 remote_async_mourn ()
4044 remote_mourn_1 (&remote_async_ops
);
4048 extended_remote_mourn ()
4050 /* We do _not_ want to mourn the target like this; this will
4051 remove the extended remote target from the target stack,
4052 and the next time the user says "run" it'll fail.
4054 FIXME: What is the right thing to do here? */
4056 remote_mourn_1 (&extended_remote_ops
);
4060 /* Worker function for remote_mourn. */
4062 remote_mourn_1 (target
)
4063 struct target_ops
*target
;
4065 unpush_target (target
);
4066 generic_mourn_inferior ();
4069 /* In the extended protocol we want to be able to do things like
4070 "run" and have them basically work as expected. So we need
4071 a special create_inferior function.
4073 FIXME: One day add support for changing the exec file
4074 we're debugging, arguments and an environment. */
4077 extended_remote_create_inferior (exec_file
, args
, env
)
4082 /* Rip out the breakpoints; we'll reinsert them after restarting
4083 the remote server. */
4084 remove_breakpoints ();
4086 /* Now restart the remote server. */
4087 extended_remote_restart ();
4089 /* Now put the breakpoints back in. This way we're safe if the
4090 restart function works via a unix fork on the remote side. */
4091 insert_breakpoints ();
4093 /* Clean up from the last time we were running. */
4094 clear_proceed_status ();
4096 /* Let the remote process run. */
4097 proceed (-1, TARGET_SIGNAL_0
, 0);
4100 /* Async version of extended_remote_create_inferior. */
4102 extended_remote_async_create_inferior (exec_file
, args
, env
)
4107 /* Rip out the breakpoints; we'll reinsert them after restarting
4108 the remote server. */
4109 remove_breakpoints ();
4111 /* If running asynchronously, register the target file descriptor
4112 with the event loop. */
4113 if (event_loop_p
&& target_can_async_p ())
4114 target_async (inferior_event_handler
, 0);
4116 /* Now restart the remote server. */
4117 extended_remote_restart ();
4119 /* Now put the breakpoints back in. This way we're safe if the
4120 restart function works via a unix fork on the remote side. */
4121 insert_breakpoints ();
4123 /* Clean up from the last time we were running. */
4124 clear_proceed_status ();
4126 /* Let the remote process run. */
4127 proceed (-1, TARGET_SIGNAL_0
, 0);
4131 /* On some machines, e.g. 68k, we may use a different breakpoint instruction
4132 than other targets; in those use REMOTE_BREAKPOINT instead of just
4133 BREAKPOINT. Also, bi-endian targets may define LITTLE_REMOTE_BREAKPOINT
4134 and BIG_REMOTE_BREAKPOINT. If none of these are defined, we just call
4135 the standard routines that are in mem-break.c. */
4137 /* FIXME, these ought to be done in a more dynamic fashion. For instance,
4138 the choice of breakpoint instruction affects target program design and
4139 vice versa, and by making it user-tweakable, the special code here
4140 goes away and we need fewer special GDB configurations. */
4142 #if defined (LITTLE_REMOTE_BREAKPOINT) && defined (BIG_REMOTE_BREAKPOINT) && !defined(REMOTE_BREAKPOINT)
4143 #define REMOTE_BREAKPOINT
4146 #ifdef REMOTE_BREAKPOINT
4148 /* If the target isn't bi-endian, just pretend it is. */
4149 #if !defined (LITTLE_REMOTE_BREAKPOINT) && !defined (BIG_REMOTE_BREAKPOINT)
4150 #define LITTLE_REMOTE_BREAKPOINT REMOTE_BREAKPOINT
4151 #define BIG_REMOTE_BREAKPOINT REMOTE_BREAKPOINT
4154 static unsigned char big_break_insn
[] = BIG_REMOTE_BREAKPOINT
;
4155 static unsigned char little_break_insn
[] = LITTLE_REMOTE_BREAKPOINT
;
4157 #endif /* REMOTE_BREAKPOINT */
4159 /* Insert a breakpoint on targets that don't have any better breakpoint
4160 support. We read the contents of the target location and stash it,
4161 then overwrite it with a breakpoint instruction. ADDR is the target
4162 location in the target machine. CONTENTS_CACHE is a pointer to
4163 memory allocated for saving the target contents. It is guaranteed
4164 by the caller to be long enough to save sizeof BREAKPOINT bytes (this
4165 is accomplished via BREAKPOINT_MAX). */
4168 remote_insert_breakpoint (addr
, contents_cache
)
4170 char *contents_cache
;
4172 #ifdef REMOTE_BREAKPOINT
4177 /* Try the "Z" packet if it is not already disabled.
4178 If it succeeds, then set the support to PACKET_ENABLE.
4179 If it fails, and the user has explicitly requested the Z support
4180 then report an error, otherwise, mark it disabled and go on. */
4182 if ((remote_protocol_Z
.support
== PACKET_ENABLE
)
4183 || (remote_protocol_Z
.support
== PACKET_SUPPORT_UNKNOWN
))
4185 char *buf
= alloca (PBUFSIZ
);
4188 addr
= remote_address_masked (addr
);
4192 p
+= hexnumstr (p
, (ULONGEST
) addr
);
4193 BREAKPOINT_FROM_PC (&addr
, &bp_size
);
4194 sprintf (p
, ",%d", bp_size
);
4197 getpkt (buf
, PBUFSIZ
, 0);
4201 remote_protocol_Z
.support
= PACKET_ENABLE
;
4202 return (buf
[0] == 'E');
4205 /* The stub does not support the 'Z' request. If the user has
4206 explicitly requested the Z support, or if the stub previously
4207 said it supported the packet, this is an error,
4208 otherwise, mark it disabled. */
4210 else if (remote_protocol_Z
.support
== PACKET_ENABLE
)
4212 error ("Protocol error: Z packet not recognized by stub");
4216 remote_protocol_Z
.support
= PACKET_DISABLE
;
4220 #ifdef REMOTE_BREAKPOINT
4221 val
= target_read_memory (addr
, contents_cache
, sizeof big_break_insn
);
4225 if (TARGET_BYTE_ORDER
== BIG_ENDIAN
)
4226 val
= target_write_memory (addr
, (char *) big_break_insn
,
4227 sizeof big_break_insn
);
4229 val
= target_write_memory (addr
, (char *) little_break_insn
,
4230 sizeof little_break_insn
);
4235 return memory_insert_breakpoint (addr
, contents_cache
);
4236 #endif /* REMOTE_BREAKPOINT */
4240 remote_remove_breakpoint (addr
, contents_cache
)
4242 char *contents_cache
;
4246 if ((remote_protocol_Z
.support
== PACKET_ENABLE
)
4247 || (remote_protocol_Z
.support
== PACKET_SUPPORT_UNKNOWN
))
4249 char *buf
= alloca (PBUFSIZ
);
4256 addr
= remote_address_masked (addr
);
4257 p
+= hexnumstr (p
, (ULONGEST
) addr
);
4258 BREAKPOINT_FROM_PC (&addr
, &bp_size
);
4259 sprintf (p
, ",%d", bp_size
);
4262 getpkt (buf
, PBUFSIZ
, 0);
4264 return (buf
[0] == 'E');
4267 #ifdef REMOTE_BREAKPOINT
4268 return target_write_memory (addr
, contents_cache
, sizeof big_break_insn
);
4270 return memory_remove_breakpoint (addr
, contents_cache
);
4271 #endif /* REMOTE_BREAKPOINT */
4274 #ifdef TARGET_HAS_HARDWARE_WATCHPOINTS
4276 remote_insert_watchpoint (addr
, len
, type
)
4281 char *buf
= alloca (PBUFSIZ
);
4284 if (remote_protocol_Z
.support
== PACKET_DISABLE
)
4285 error ("Can't set hardware watchpoints without the 'Z' packet\n");
4287 sprintf (buf
, "Z%x,", type
+ 2 );
4288 p
= strchr (buf
, '\0');
4289 addr
= remote_address_masked (addr
);
4290 p
+= hexnumstr (p
, (ULONGEST
) addr
);
4291 sprintf (p
, ",%x", len
);
4294 getpkt (buf
, PBUFSIZ
, 0);
4296 if (buf
[0] == '\0' || buf
[0] == 'E')
4303 remote_remove_watchpoint (addr
, len
, type
)
4308 char *buf
= alloca (PBUFSIZ
);
4311 sprintf (buf
, "z%x,", type
+ 2 );
4312 p
= strchr (buf
, '\0');
4313 addr
= remote_address_masked (addr
);
4314 p
+= hexnumstr (p
, (ULONGEST
) addr
);
4315 sprintf (p
, ",%x", len
);
4317 getpkt (buf
, PBUFSIZ
, 0);
4319 if (buf
[0] == '\0' || buf
[0] == 'E')
4326 remote_insert_hw_breakpoint (addr
, len
)
4330 char *buf
= alloca (PBUFSIZ
);
4333 if (remote_protocol_Z
.support
== PACKET_DISABLE
)
4334 error ("Can't set hardware breakpoints without the 'Z' packet\n");
4340 addr
= remote_address_masked (addr
);
4341 p
+= hexnumstr (p
, (ULONGEST
) addr
);
4345 getpkt (buf
, PBUFSIZ
, 0);
4347 if (buf
[0] == '\0' || buf
[0] == 'E')
4354 remote_remove_hw_breakpoint (addr
, len
)
4358 char *buf
= alloca (PBUFSIZ
);
4365 addr
= remote_address_masked (addr
);
4366 p
+= hexnumstr (p
, (ULONGEST
) addr
);
4370 getpkt (buf
, PBUFSIZ
, 0);
4372 if (buf
[0] == '\0' || buf
[0] == 'E')
4379 /* Some targets are only capable of doing downloads, and afterwards
4380 they switch to the remote serial protocol. This function provides
4381 a clean way to get from the download target to the remote target.
4382 It's basically just a wrapper so that we don't have to expose any
4383 of the internal workings of remote.c.
4385 Prior to calling this routine, you should shutdown the current
4386 target code, else you will get the "A program is being debugged
4387 already..." message. Usually a call to pop_target() suffices. */
4390 push_remote_target (name
, from_tty
)
4394 printf_filtered ("Switching to remote protocol\n");
4395 remote_open (name
, from_tty
);
4398 /* Other targets want to use the entire remote serial module but with
4399 certain remote_ops overridden. */
4402 open_remote_target (name
, from_tty
, target
, extended_p
)
4405 struct target_ops
*target
;
4408 printf_filtered ("Selecting the %sremote protocol\n",
4409 (extended_p
? "extended-" : ""));
4410 remote_open_1 (name
, from_tty
, target
, extended_p
);
4413 /* Table used by the crc32 function to calcuate the checksum. */
4415 static unsigned long crc32_table
[256] =
4418 static unsigned long
4419 crc32 (buf
, len
, crc
)
4424 if (!crc32_table
[1])
4426 /* Initialize the CRC table and the decoding table. */
4430 for (i
= 0; i
< 256; i
++)
4432 for (c
= i
<< 24, j
= 8; j
> 0; --j
)
4433 c
= c
& 0x80000000 ? (c
<< 1) ^ 0x04c11db7 : (c
<< 1);
4440 crc
= (crc
<< 8) ^ crc32_table
[((crc
>> 24) ^ *buf
) & 255];
4446 /* compare-sections command
4448 With no arguments, compares each loadable section in the exec bfd
4449 with the same memory range on the target, and reports mismatches.
4450 Useful for verifying the image on the target against the exec file.
4451 Depends on the target understanding the new "qCRC:" request. */
4453 /* FIXME: cagney/1999-10-26: This command should be broken down into a
4454 target method (target verify memory) and generic version of the
4455 actual command. This will allow other high-level code (especially
4456 generic_load()) to make use of this target functionality. */
4459 compare_sections_command (args
, from_tty
)
4464 unsigned long host_crc
, target_crc
;
4465 extern bfd
*exec_bfd
;
4466 struct cleanup
*old_chain
;
4470 char *buf
= alloca (PBUFSIZ
);
4477 error ("command cannot be used without an exec file");
4478 if (!current_target
.to_shortname
||
4479 strcmp (current_target
.to_shortname
, "remote") != 0)
4480 error ("command can only be used with remote target");
4482 for (s
= exec_bfd
->sections
; s
; s
= s
->next
)
4484 if (!(s
->flags
& SEC_LOAD
))
4485 continue; /* skip non-loadable section */
4487 size
= bfd_get_section_size_before_reloc (s
);
4489 continue; /* skip zero-length section */
4491 sectname
= (char *) bfd_get_section_name (exec_bfd
, s
);
4492 if (args
&& strcmp (args
, sectname
) != 0)
4493 continue; /* not the section selected by user */
4495 matched
= 1; /* do this section */
4497 /* FIXME: assumes lma can fit into long */
4498 sprintf (buf
, "qCRC:%lx,%lx", (long) lma
, (long) size
);
4501 /* be clever; compute the host_crc before waiting for target reply */
4502 sectdata
= xmalloc (size
);
4503 old_chain
= make_cleanup (free
, sectdata
);
4504 bfd_get_section_contents (exec_bfd
, s
, sectdata
, 0, size
);
4505 host_crc
= crc32 ((unsigned char *) sectdata
, size
, 0xffffffff);
4507 getpkt (buf
, PBUFSIZ
, 0);
4509 error ("target memory fault, section %s, range 0x%08x -- 0x%08x",
4510 sectname
, lma
, lma
+ size
);
4512 error ("remote target does not support this operation");
4514 for (target_crc
= 0, tmp
= &buf
[1]; *tmp
; tmp
++)
4515 target_crc
= target_crc
* 16 + fromhex (*tmp
);
4517 printf_filtered ("Section %s, range 0x%s -- 0x%s: ",
4518 sectname
, paddr (lma
), paddr (lma
+ size
));
4519 if (host_crc
== target_crc
)
4520 printf_filtered ("matched.\n");
4523 printf_filtered ("MIS-MATCHED!\n");
4527 do_cleanups (old_chain
);
4530 warning ("One or more sections of the remote executable does not match\n\
4531 the loaded file\n");
4532 if (args
&& !matched
)
4533 printf_filtered ("No loaded section named '%s'.\n", args
);
4537 remote_query (query_type
, buf
, outbuf
, bufsiz
)
4544 char *buf2
= alloca (PBUFSIZ
);
4545 char *p2
= &buf2
[0];
4548 error ("null pointer to remote bufer size specified");
4550 /* minimum outbuf size is PBUFSIZ - if bufsiz is not large enough let
4551 the caller know and return what the minimum size is */
4552 /* Note: a zero bufsiz can be used to query the minimum buffer size */
4553 if (*bufsiz
< PBUFSIZ
)
4559 /* except for querying the minimum buffer size, target must be open */
4561 error ("remote query is only available after target open");
4563 /* we only take uppercase letters as query types, at least for now */
4564 if ((query_type
< 'A') || (query_type
> 'Z'))
4565 error ("invalid remote query type");
4568 error ("null remote query specified");
4571 error ("remote query requires a buffer to receive data");
4578 /* we used one buffer char for the remote protocol q command and another
4579 for the query type. As the remote protocol encapsulation uses 4 chars
4580 plus one extra in case we are debugging (remote_debug),
4581 we have PBUFZIZ - 7 left to pack the query string */
4583 while (buf
[i
] && (i
< (PBUFSIZ
- 8)))
4585 /* bad caller may have sent forbidden characters */
4586 if ((!isprint (buf
[i
])) || (buf
[i
] == '$') || (buf
[i
] == '#'))
4587 error ("illegal characters in query string");
4595 error ("query larger than available buffer");
4601 getpkt (outbuf
, *bufsiz
, 0);
4607 remote_rcmd (char *command
,
4608 struct gdb_file
*outbuf
)
4611 char *buf
= alloca (PBUFSIZ
);
4615 error ("remote rcmd is only available after target open");
4617 /* Send a NULL command across as an empty command */
4618 if (command
== NULL
)
4621 /* The query prefix */
4622 strcpy (buf
, "qRcmd,");
4623 p
= strchr (buf
, '\0');
4625 if ((strlen (buf
) + strlen (command
) * 2 + 8/*misc*/) > PBUFSIZ
)
4626 error ("\"monitor\" command ``%s'' is too long\n", command
);
4628 /* Encode the actual command */
4629 for (i
= 0; command
[i
]; i
++)
4631 *p
++ = tohex ((command
[i
] >> 4) & 0xf);
4632 *p
++ = tohex (command
[i
] & 0xf);
4636 if (putpkt (buf
) < 0)
4637 error ("Communication problem with target\n");
4639 /* get/display the response */
4642 /* XXX - see also tracepoint.c:remote_get_noisy_reply() */
4644 getpkt (buf
, PBUFSIZ
, 0);
4646 error ("Target does not support this command\n");
4647 if (buf
[0] == 'O' && buf
[1] != 'K')
4649 remote_console_output (buf
+ 1); /* 'O' message from stub */
4652 if (strcmp (buf
, "OK") == 0)
4654 if (strlen (buf
) == 3 && buf
[0] == 'E'
4655 && isdigit (buf
[1]) && isdigit (buf
[2]))
4657 error ("Protocol error with Rcmd");
4659 for (p
= buf
; p
[0] != '\0' && p
[1] != '\0'; p
+= 2)
4661 char c
= (fromhex (p
[0]) << 4) + fromhex (p
[1]);
4662 fputc_unfiltered (c
, outbuf
);
4669 packet_command (args
, from_tty
)
4673 char *buf
= alloca (PBUFSIZ
);
4676 error ("command can only be used with remote target");
4679 error ("remote-packet command requires packet text as argument");
4681 puts_filtered ("sending: ");
4682 print_packet (args
);
4683 puts_filtered ("\n");
4686 getpkt (buf
, PBUFSIZ
, 0);
4687 puts_filtered ("received: ");
4689 puts_filtered ("\n");
4693 /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------------- */
4695 static void display_thread_info
PARAMS ((struct gdb_ext_thread_info
* info
));
4697 static void threadset_test_cmd
PARAMS ((char *cmd
, int tty
));
4699 static void threadalive_test
PARAMS ((char *cmd
, int tty
));
4701 static void threadlist_test_cmd
PARAMS ((char *cmd
, int tty
));
4703 int get_and_display_threadinfo
PARAMS ((threadref
* ref
));
4705 static void threadinfo_test_cmd
PARAMS ((char *cmd
, int tty
));
4707 static int thread_display_step
PARAMS ((threadref
* ref
, void *context
));
4709 static void threadlist_update_test_cmd
PARAMS ((char *cmd
, int tty
));
4711 static void init_remote_threadtests
PARAMS ((void));
4713 #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid */
4716 threadset_test_cmd (cmd
, tty
)
4720 int sample_thread
= SAMPLE_THREAD
;
4722 printf_filtered ("Remote threadset test\n");
4723 set_thread (sample_thread
, 1);
4728 threadalive_test (cmd
, tty
)
4732 int sample_thread
= SAMPLE_THREAD
;
4734 if (remote_thread_alive (sample_thread
))
4735 printf_filtered ("PASS: Thread alive test\n");
4737 printf_filtered ("FAIL: Thread alive test\n");
4740 void output_threadid
PARAMS ((char *title
, threadref
* ref
));
4743 output_threadid (title
, ref
)
4749 pack_threadid (&hexid
[0], ref
); /* Convert threead id into hex */
4751 printf_filtered ("%s %s\n", title
, (&hexid
[0]));
4755 threadlist_test_cmd (cmd
, tty
)
4760 threadref nextthread
;
4761 int done
, result_count
;
4762 threadref threadlist
[3];
4764 printf_filtered ("Remote Threadlist test\n");
4765 if (!remote_get_threadlist (startflag
, &nextthread
, 3, &done
,
4766 &result_count
, &threadlist
[0]))
4767 printf_filtered ("FAIL: threadlist test\n");
4770 threadref
*scan
= threadlist
;
4771 threadref
*limit
= scan
+ result_count
;
4773 while (scan
< limit
)
4774 output_threadid (" thread ", scan
++);
4779 display_thread_info (info
)
4780 struct gdb_ext_thread_info
*info
;
4782 output_threadid ("Threadid: ", &info
->threadid
);
4783 printf_filtered ("Name: %s\n ", info
->shortname
);
4784 printf_filtered ("State: %s\n", info
->display
);
4785 printf_filtered ("other: %s\n\n", info
->more_display
);
4789 get_and_display_threadinfo (ref
)
4794 struct gdb_ext_thread_info threadinfo
;
4796 set
= TAG_THREADID
| TAG_EXISTS
| TAG_THREADNAME
4797 | TAG_MOREDISPLAY
| TAG_DISPLAY
;
4798 if (0 != (result
= remote_get_threadinfo (ref
, set
, &threadinfo
)))
4799 display_thread_info (&threadinfo
);
4804 threadinfo_test_cmd (cmd
, tty
)
4808 int athread
= SAMPLE_THREAD
;
4812 int_to_threadref (&thread
, athread
);
4813 printf_filtered ("Remote Threadinfo test\n");
4814 if (!get_and_display_threadinfo (&thread
))
4815 printf_filtered ("FAIL cannot get thread info\n");
4819 thread_display_step (ref
, context
)
4823 /* output_threadid(" threadstep ",ref); *//* simple test */
4824 return get_and_display_threadinfo (ref
);
4828 threadlist_update_test_cmd (cmd
, tty
)
4832 printf_filtered ("Remote Threadlist update test\n");
4833 remote_threadlist_iterator (thread_display_step
, 0, CRAZY_MAX_THREADS
);
4837 init_remote_threadtests (void)
4839 add_com ("tlist", class_obscure
, threadlist_test_cmd
,
4840 "Fetch and print the remote list of thread identifiers, one pkt only");
4841 add_com ("tinfo", class_obscure
, threadinfo_test_cmd
,
4842 "Fetch and display info about one thread");
4843 add_com ("tset", class_obscure
, threadset_test_cmd
,
4844 "Test setting to a different thread");
4845 add_com ("tupd", class_obscure
, threadlist_update_test_cmd
,
4846 "Iterate through updating all remote thread info");
4847 add_com ("talive", class_obscure
, threadalive_test
,
4848 " Remote thread alive test ");
4856 remote_ops
.to_shortname
= "remote";
4857 remote_ops
.to_longname
= "Remote serial target in gdb-specific protocol";
4859 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
4860 Specify the serial device it is connected to\n\
4861 (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).";
4862 remote_ops
.to_open
= remote_open
;
4863 remote_ops
.to_close
= remote_close
;
4864 remote_ops
.to_detach
= remote_detach
;
4865 remote_ops
.to_resume
= remote_resume
;
4866 remote_ops
.to_wait
= remote_wait
;
4867 remote_ops
.to_fetch_registers
= remote_fetch_registers
;
4868 remote_ops
.to_store_registers
= remote_store_registers
;
4869 remote_ops
.to_prepare_to_store
= remote_prepare_to_store
;
4870 remote_ops
.to_xfer_memory
= remote_xfer_memory
;
4871 remote_ops
.to_files_info
= remote_files_info
;
4872 remote_ops
.to_insert_breakpoint
= remote_insert_breakpoint
;
4873 remote_ops
.to_remove_breakpoint
= remote_remove_breakpoint
;
4874 remote_ops
.to_kill
= remote_kill
;
4875 remote_ops
.to_load
= generic_load
;
4876 remote_ops
.to_mourn_inferior
= remote_mourn
;
4877 remote_ops
.to_thread_alive
= remote_thread_alive
;
4878 remote_ops
.to_find_new_threads
= remote_threads_info
;
4879 remote_ops
.to_stop
= remote_stop
;
4880 remote_ops
.to_query
= remote_query
;
4881 remote_ops
.to_rcmd
= remote_rcmd
;
4882 remote_ops
.to_stratum
= process_stratum
;
4883 remote_ops
.to_has_all_memory
= 1;
4884 remote_ops
.to_has_memory
= 1;
4885 remote_ops
.to_has_stack
= 1;
4886 remote_ops
.to_has_registers
= 1;
4887 remote_ops
.to_has_execution
= 1;
4888 remote_ops
.to_has_thread_control
= tc_schedlock
; /* can lock scheduler */
4889 remote_ops
.to_magic
= OPS_MAGIC
;
4892 /* Set up the extended remote vector by making a copy of the standard
4893 remote vector and adding to it. */
4896 init_extended_remote_ops ()
4898 extended_remote_ops
= remote_ops
;
4900 extended_remote_ops
.to_shortname
= "extended-remote";
4901 extended_remote_ops
.to_longname
=
4902 "Extended remote serial target in gdb-specific protocol";
4903 extended_remote_ops
.to_doc
=
4904 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
4905 Specify the serial device it is connected to (e.g. /dev/ttya).",
4906 extended_remote_ops
.to_open
= extended_remote_open
;
4907 extended_remote_ops
.to_create_inferior
= extended_remote_create_inferior
;
4908 extended_remote_ops
.to_mourn_inferior
= extended_remote_mourn
;
4912 * Command: info remote-process
4914 * This implements Cisco's version of the "info proc" command.
4916 * This query allows the target stub to return an arbitrary string
4917 * (or strings) giving arbitrary information about the target process.
4918 * This is optional; the target stub isn't required to implement it.
4920 * Syntax: qfProcessInfo request first string
4921 * qsProcessInfo request subsequent string
4922 * reply: 'O'<hex-encoded-string>
4923 * 'l' last reply (empty)
4927 remote_info_process (char *args
, int from_tty
)
4929 char *buf
= alloca (PBUFSIZ
);
4931 if (remote_desc
== 0)
4932 error ("Command can only be used when connected to the remote target.");
4934 putpkt ("qfProcessInfo");
4935 getpkt (buf
, PBUFSIZ
, 0);
4937 return; /* Silently: target does not support this feature. */
4940 error ("info proc: target error.");
4942 while (buf
[0] == 'O') /* Capitol-O packet */
4944 remote_console_output (&buf
[1]);
4945 putpkt ("qsProcessInfo");
4946 getpkt (buf
, PBUFSIZ
, 0);
4955 remote_cisco_open (char *name
, int from_tty
)
4959 "To open a remote debug connection, you need to specify what \n\
4960 device is attached to the remote system (e.g. host:port).");
4962 /* See FIXME above */
4963 wait_forever_enabled_p
= 1;
4965 target_preopen (from_tty
);
4967 unpush_target (&remote_cisco_ops
);
4969 remote_dcache
= dcache_init (remote_read_bytes
, remote_write_bytes
);
4971 remote_desc
= SERIAL_OPEN (name
);
4973 perror_with_name (name
);
4976 * If a baud rate was specified on the gdb command line it will
4977 * be greater than the initial value of -1. If it is, use it otherwise
4981 baud_rate
= (baud_rate
> 0) ? baud_rate
: 9600;
4982 if (SERIAL_SETBAUDRATE (remote_desc
, baud_rate
))
4984 SERIAL_CLOSE (remote_desc
);
4985 perror_with_name (name
);
4988 SERIAL_RAW (remote_desc
);
4990 /* If there is something sitting in the buffer we might take it as a
4991 response to a command, which would be bad. */
4992 SERIAL_FLUSH_INPUT (remote_desc
);
4996 puts_filtered ("Remote debugging using ");
4997 puts_filtered (name
);
4998 puts_filtered ("\n");
5001 remote_cisco_mode
= 1;
5003 push_target (&remote_cisco_ops
); /* Switch to using cisco target now */
5005 init_packet_config (&remote_protocol_P
);
5006 init_packet_config (&remote_protocol_Z
);
5008 general_thread
= -2;
5009 continue_thread
= -2;
5011 /* Force remote_write_bytes to check whether target supports
5012 binary downloading. */
5013 init_packet_config (&remote_protocol_binary_download
);
5015 /* Without this, some commands which require an active target (such
5016 as kill) won't work. This variable serves (at least) double duty
5017 as both the pid of the target process (if it has such), and as a
5018 flag indicating that a target is active. These functions should
5019 be split out into seperate variables, especially since GDB will
5020 someday have a notion of debugging several processes. */
5021 inferior_pid
= MAGIC_NULL_PID
;
5023 /* Start the remote connection; if error (0), discard this target. */
5025 if (!catch_errors (remote_start_remote_dummy
, (char *) 0,
5026 "Couldn't establish connection to remote target\n",
5035 remote_cisco_close (int quitting
)
5037 remote_cisco_mode
= 0;
5038 remote_close (quitting
);
5045 remote_mourn_1 (&remote_cisco_ops
);
5057 /* shared between readsocket() and readtty() */
5058 static char *tty_input
;
5060 static int escape_count
;
5061 static int echo_check
;
5062 extern int quit_flag
;
5069 /* Loop until the socket doesn't have any more data */
5071 while ((data
= readchar (0)) >= 0)
5073 /* Check for the escape sequence */
5076 /* If this is the fourth escape, get out */
5077 if (++escape_count
== 4)
5082 { /* This is a '|', but not the fourth in a row.
5083 Continue without echoing it. If it isn't actually
5084 one of four in a row, it'll be echoed later. */
5091 /* Ensure any pending '|'s are flushed. */
5093 for (; escape_count
> 0; escape_count
--)
5097 if (data
== '\r') /* If this is a return character, */
5098 continue; /* - just supress it. */
5100 if (echo_check
!= -1) /* Check for echo of user input. */
5102 if (tty_input
[echo_check
] == data
)
5104 echo_check
++; /* Character matched user input: */
5105 continue; /* Continue without echoing it. */
5107 else if ((data
== '\n') && (tty_input
[echo_check
] == '\r'))
5108 { /* End of the line (and of echo checking). */
5109 echo_check
= -1; /* No more echo supression */
5110 continue; /* Continue without echoing. */
5113 { /* Failed check for echo of user input.
5114 We now have some suppressed output to flush! */
5117 for (j
= 0; j
< echo_check
; j
++)
5118 putchar (tty_input
[j
]);
5122 putchar (data
); /* Default case: output the char. */
5125 if (data
== SERIAL_TIMEOUT
) /* Timeout returned from readchar. */
5126 return READ_MORE
; /* Try to read some more */
5128 return FATAL_ERROR
; /* Trouble, bail out */
5136 /* First, read a buffer full from the terminal */
5137 tty_bytecount
= read (fileno (stdin
), tty_input
, sizeof (tty_input
) - 1);
5138 if (tty_bytecount
== -1)
5140 perror ("readtty: read failed");
5144 /* Remove a quoted newline. */
5145 if (tty_input
[tty_bytecount
- 1] == '\n' &&
5146 tty_input
[tty_bytecount
- 2] == '\\') /* line ending in backslash */
5148 tty_input
[--tty_bytecount
] = 0; /* remove newline */
5149 tty_input
[--tty_bytecount
] = 0; /* remove backslash */
5152 /* Turn trailing newlines into returns */
5153 if (tty_input
[tty_bytecount
- 1] == '\n')
5154 tty_input
[tty_bytecount
- 1] = '\r';
5156 /* If the line consists of a ~, enter debugging mode. */
5157 if ((tty_input
[0] == '~') && (tty_bytecount
== 2))
5160 /* Make this a zero terminated string and write it out */
5161 tty_input
[tty_bytecount
] = 0;
5162 if (SERIAL_WRITE (remote_desc
, tty_input
, tty_bytecount
))
5164 perror_with_name ("readtty: write failed");
5174 fd_set input
; /* file descriptors for select */
5175 int tablesize
; /* max number of FDs for select */
5179 extern int escape_count
; /* global shared by readsocket */
5180 extern int echo_check
; /* ditto */
5185 tablesize
= 8 * sizeof (input
);
5189 /* Check for anything from our socket - doesn't block. Note that
5190 this must be done *before* the select as there may be
5191 buffered I/O waiting to be processed. */
5193 if ((status
= readsocket ()) == FATAL_ERROR
)
5195 error ("Debugging terminated by communications error");
5197 else if (status
!= READ_MORE
)
5202 fflush (stdout
); /* Flush output before blocking */
5204 /* Now block on more socket input or TTY input */
5207 FD_SET (fileno (stdin
), &input
);
5208 FD_SET (DEPRECATED_SERIAL_FD (remote_desc
), &input
);
5210 status
= select (tablesize
, &input
, 0, 0, 0);
5211 if ((status
== -1) && (errno
!= EINTR
))
5213 error ("Communications error on select %d", errno
);
5216 /* Handle Control-C typed */
5220 if ((++quit_count
) == 2)
5222 if (query ("Interrupt GDB? "))
5224 printf_filtered ("Interrupted by user.\n");
5225 return_to_top_level (RETURN_QUIT
);
5232 SERIAL_SEND_BREAK (remote_desc
);
5234 SERIAL_WRITE (remote_desc
, "\003", 1);
5239 /* Handle console input */
5241 if (FD_ISSET (fileno (stdin
), &input
))
5245 status
= readtty ();
5246 if (status
== READ_MORE
)
5249 return status
; /* telnet session ended */
5255 remote_cisco_wait (int pid
, struct target_waitstatus
*status
)
5257 if (minitelnet () != ENTER_DEBUG
)
5259 error ("Debugging session terminated by protocol error");
5262 return remote_wait (pid
, status
);
5266 init_remote_cisco_ops ()
5268 remote_cisco_ops
.to_shortname
= "cisco";
5269 remote_cisco_ops
.to_longname
= "Remote serial target in cisco-specific protocol";
5270 remote_cisco_ops
.to_doc
=
5271 "Use a remote machine via TCP, using a cisco-specific protocol.\n\
5272 Specify the serial device it is connected to (e.g. host:2020).";
5273 remote_cisco_ops
.to_open
= remote_cisco_open
;
5274 remote_cisco_ops
.to_close
= remote_cisco_close
;
5275 remote_cisco_ops
.to_detach
= remote_detach
;
5276 remote_cisco_ops
.to_resume
= remote_resume
;
5277 remote_cisco_ops
.to_wait
= remote_cisco_wait
;
5278 remote_cisco_ops
.to_fetch_registers
= remote_fetch_registers
;
5279 remote_cisco_ops
.to_store_registers
= remote_store_registers
;
5280 remote_cisco_ops
.to_prepare_to_store
= remote_prepare_to_store
;
5281 remote_cisco_ops
.to_xfer_memory
= remote_xfer_memory
;
5282 remote_cisco_ops
.to_files_info
= remote_files_info
;
5283 remote_cisco_ops
.to_insert_breakpoint
= remote_insert_breakpoint
;
5284 remote_cisco_ops
.to_remove_breakpoint
= remote_remove_breakpoint
;
5285 remote_cisco_ops
.to_kill
= remote_kill
;
5286 remote_cisco_ops
.to_load
= generic_load
;
5287 remote_cisco_ops
.to_mourn_inferior
= remote_cisco_mourn
;
5288 remote_cisco_ops
.to_thread_alive
= remote_thread_alive
;
5289 remote_cisco_ops
.to_find_new_threads
= remote_threads_info
;
5290 remote_cisco_ops
.to_stratum
= process_stratum
;
5291 remote_cisco_ops
.to_has_all_memory
= 1;
5292 remote_cisco_ops
.to_has_memory
= 1;
5293 remote_cisco_ops
.to_has_stack
= 1;
5294 remote_cisco_ops
.to_has_registers
= 1;
5295 remote_cisco_ops
.to_has_execution
= 1;
5296 remote_cisco_ops
.to_magic
= OPS_MAGIC
;
5300 remote_can_async_p (void)
5302 /* We're async whenever the serial device is. */
5303 return (current_target
.to_async_mask_value
) && SERIAL_CAN_ASYNC_P (remote_desc
);
5307 remote_is_async_p (void)
5309 /* We're async whenever the serial device is. */
5310 return (current_target
.to_async_mask_value
) && SERIAL_IS_ASYNC_P (remote_desc
);
5313 /* Pass the SERIAL event on and up to the client. One day this code
5314 will be able to delay notifying the client of an event until the
5315 point where an entire packet has been received. */
5317 static void (*async_client_callback
) (enum inferior_event_type event_type
, void *context
);
5318 static void *async_client_context
;
5319 static serial_event_ftype remote_async_serial_handler
;
5322 remote_async_serial_handler (serial_t scb
, void *context
)
5324 /* Don't propogate error information up to the client. Instead let
5325 the client find out about the error by querying the target. */
5326 async_client_callback (INF_REG_EVENT
, async_client_context
);
5330 remote_async (void (*callback
) (enum inferior_event_type event_type
, void *context
), void *context
)
5332 if (current_target
.to_async_mask_value
== 0)
5333 internal_error ("Calling remote_async when async is masked");
5335 if (callback
!= NULL
)
5337 SERIAL_ASYNC (remote_desc
, remote_async_serial_handler
, NULL
);
5338 async_client_callback
= callback
;
5339 async_client_context
= context
;
5342 SERIAL_ASYNC (remote_desc
, NULL
, NULL
);
5345 /* Target async and target extended-async.
5347 This are temporary targets, until it is all tested. Eventually
5348 async support will be incorporated int the usual 'remote'
5352 init_remote_async_ops (void)
5354 remote_async_ops
.to_shortname
= "async";
5355 remote_async_ops
.to_longname
= "Remote serial target in async version of the gdb-specific protocol";
5356 remote_async_ops
.to_doc
=
5357 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
5358 Specify the serial device it is connected to (e.g. /dev/ttya).";
5359 remote_async_ops
.to_open
= remote_async_open
;
5360 remote_async_ops
.to_close
= remote_close
;
5361 remote_async_ops
.to_detach
= remote_async_detach
;
5362 remote_async_ops
.to_resume
= remote_async_resume
;
5363 remote_async_ops
.to_wait
= remote_async_wait
;
5364 remote_async_ops
.to_fetch_registers
= remote_fetch_registers
;
5365 remote_async_ops
.to_store_registers
= remote_store_registers
;
5366 remote_async_ops
.to_prepare_to_store
= remote_prepare_to_store
;
5367 remote_async_ops
.to_xfer_memory
= remote_xfer_memory
;
5368 remote_async_ops
.to_files_info
= remote_files_info
;
5369 remote_async_ops
.to_insert_breakpoint
= remote_insert_breakpoint
;
5370 remote_async_ops
.to_remove_breakpoint
= remote_remove_breakpoint
;
5371 remote_async_ops
.to_terminal_inferior
= remote_async_terminal_inferior
;
5372 remote_async_ops
.to_terminal_ours
= remote_async_terminal_ours
;
5373 remote_async_ops
.to_kill
= remote_async_kill
;
5374 remote_async_ops
.to_load
= generic_load
;
5375 remote_async_ops
.to_mourn_inferior
= remote_async_mourn
;
5376 remote_async_ops
.to_thread_alive
= remote_thread_alive
;
5377 remote_async_ops
.to_find_new_threads
= remote_threads_info
;
5378 remote_async_ops
.to_stop
= remote_stop
;
5379 remote_async_ops
.to_query
= remote_query
;
5380 remote_async_ops
.to_rcmd
= remote_rcmd
;
5381 remote_async_ops
.to_stratum
= process_stratum
;
5382 remote_async_ops
.to_has_all_memory
= 1;
5383 remote_async_ops
.to_has_memory
= 1;
5384 remote_async_ops
.to_has_stack
= 1;
5385 remote_async_ops
.to_has_registers
= 1;
5386 remote_async_ops
.to_has_execution
= 1;
5387 remote_async_ops
.to_has_thread_control
= tc_schedlock
; /* can lock scheduler */
5388 remote_async_ops
.to_can_async_p
= remote_can_async_p
;
5389 remote_async_ops
.to_is_async_p
= remote_is_async_p
;
5390 remote_async_ops
.to_async
= remote_async
;
5391 remote_async_ops
.to_async_mask_value
= 1;
5392 remote_async_ops
.to_magic
= OPS_MAGIC
;
5395 /* Set up the async extended remote vector by making a copy of the standard
5396 remote vector and adding to it. */
5399 init_extended_async_remote_ops (void)
5401 extended_async_remote_ops
= remote_async_ops
;
5403 extended_async_remote_ops
.to_shortname
= "extended-async";
5404 extended_async_remote_ops
.to_longname
=
5405 "Extended remote serial target in async gdb-specific protocol";
5406 extended_async_remote_ops
.to_doc
=
5407 "Use a remote computer via a serial line, using an async gdb-specific protocol.\n\
5408 Specify the serial device it is connected to (e.g. /dev/ttya).",
5409 extended_async_remote_ops
.to_open
= extended_remote_async_open
;
5410 extended_async_remote_ops
.to_create_inferior
= extended_remote_async_create_inferior
;
5411 extended_async_remote_ops
.to_mourn_inferior
= extended_remote_mourn
;
5415 set_remote_cmd (char *args
, int from_tty
)
5422 build_remote_gdbarch_data ()
5424 build_remote_packet_sizes ();
5427 tty_input
= xmalloc (PBUFSIZ
);
5428 remote_address_size
= TARGET_PTR_BIT
;
5432 _initialize_remote ()
5434 static struct cmd_list_element
*remote_set_cmdlist
;
5435 static struct cmd_list_element
*remote_show_cmdlist
;
5436 struct cmd_list_element
*tmpcmd
;
5438 /* architecture specific data */
5439 build_remote_gdbarch_data ();
5440 register_gdbarch_swap (&tty_input
, sizeof (&tty_input
), NULL
);
5441 register_remote_packet_sizes ();
5442 register_gdbarch_swap (&remote_address_size
,
5443 sizeof (&remote_address_size
), NULL
);
5444 register_gdbarch_swap (NULL
, 0, build_remote_gdbarch_data
);
5447 add_target (&remote_ops
);
5449 init_extended_remote_ops ();
5450 add_target (&extended_remote_ops
);
5452 init_remote_async_ops ();
5453 add_target (&remote_async_ops
);
5455 init_extended_async_remote_ops ();
5456 add_target (&extended_async_remote_ops
);
5458 init_remote_cisco_ops ();
5459 add_target (&remote_cisco_ops
);
5462 init_remote_threadtests ();
5465 add_prefix_cmd ("remote", class_maintenance
, set_remote_cmd
, "\
5466 Remote protocol specific variables\n\
5467 Configure various remote-protocol specific variables such as\n\
5468 the packets being used",
5469 &remote_set_cmdlist
, "set remote ",
5470 0/*allow-unknown*/, &setlist
);
5471 add_prefix_cmd ("remote", class_maintenance
, set_remote_cmd
, "\
5472 Remote protocol specific variables\n\
5473 Configure various remote-protocol specific variables such as\n\
5474 the packets being used",
5475 &remote_show_cmdlist
, "show remote ",
5476 0/*allow-unknown*/, &showlist
);
5478 add_cmd ("compare-sections", class_obscure
, compare_sections_command
,
5479 "Compare section data on target to the exec file.\n\
5480 Argument is a single section name (default: all loaded sections).",
5483 add_cmd ("packet", class_maintenance
, packet_command
,
5484 "Send an arbitrary packet to a remote target.\n\
5485 maintenance packet TEXT\n\
5486 If GDB is talking to an inferior via the GDB serial protocol, then\n\
5487 this command sends the string TEXT to the inferior, and displays the\n\
5488 response packet. GDB supplies the initial `$' character, and the\n\
5489 terminating `#' character and checksum.",
5493 (add_set_cmd ("remotetimeout", no_class
,
5494 var_integer
, (char *) &remote_timeout
,
5495 "Set timeout value for remote read.\n",
5500 (add_set_cmd ("remotebreak", no_class
,
5501 var_boolean
, (char *) &remote_break
,
5502 "Set whether to send break if interrupted.\n",
5506 /* Install commands for configuring memory read/write packets. */
5508 add_cmd ("remotewritesize", no_class
, set_memory_write_packet_size
,
5509 "Set the maximum number of bytes per memory write packet (deprecated).\n",
5511 add_cmd ("remotewritesize", no_class
, set_memory_write_packet_size
,
5512 "Show the maximum number of bytes per memory write packet (deprecated).\n",
5514 add_cmd ("memory-write-packet-size", no_class
,
5515 set_memory_write_packet_size
,
5516 "Set the maximum number of bytes per memory-write packet.\n"
5517 "Specify the number of bytes in a packet or 0 (zero) for the\n"
5518 "default packet size. The actual limit is further reduced\n"
5519 "dependent on the target. Specify ``fixed'' to disable the\n"
5520 "further restriction and ``limit'' to enable that restriction\n",
5521 &remote_set_cmdlist
);
5522 add_cmd ("memory-read-packet-size", no_class
,
5523 set_memory_read_packet_size
,
5524 "Set the maximum number of bytes per memory-read packet.\n"
5525 "Specify the number of bytes in a packet or 0 (zero) for the\n"
5526 "default packet size. The actual limit is further reduced\n"
5527 "dependent on the target. Specify ``fixed'' to disable the\n"
5528 "further restriction and ``limit'' to enable that restriction\n",
5529 &remote_set_cmdlist
);
5530 add_cmd ("memory-write-packet-size", no_class
,
5531 show_memory_write_packet_size
,
5532 "Show the maximum number of bytes per memory-write packet.\n",
5533 &remote_show_cmdlist
);
5534 add_cmd ("memory-read-packet-size", no_class
,
5535 show_memory_read_packet_size
,
5536 "Show the maximum number of bytes per memory-read packet.\n",
5537 &remote_show_cmdlist
);
5540 (add_set_cmd ("remoteaddresssize", class_obscure
,
5541 var_integer
, (char *) &remote_address_size
,
5542 "Set the maximum size of the address (in bits) \
5543 in a memory packet.\n",
5547 add_packet_config_cmd (&remote_protocol_binary_download
,
5548 "X", "binary-download",
5549 set_remote_protocol_binary_download_cmd
,
5550 show_remote_protocol_binary_download_cmd
,
5551 &remote_set_cmdlist
, &remote_show_cmdlist
);
5553 /* XXXX - should ``set remotebinarydownload'' be retained for
5556 (add_set_cmd ("remotebinarydownload", no_class
,
5557 var_boolean
, (char *) &remote_binary_download
,
5558 "Set binary downloads.\n", &setlist
),
5562 add_info ("remote-process", remote_info_process
,
5563 "Query the remote system for process info.");
5565 add_packet_config_cmd (&remote_protocol_P
, "P", "set-register",
5566 set_remote_protocol_P_packet_cmd
,
5567 show_remote_protocol_P_packet_cmd
,
5568 &remote_set_cmdlist
, &remote_show_cmdlist
);
5570 add_packet_config_cmd (&remote_protocol_Z
, "Z", "breakpoint",
5571 set_remote_protocol_Z_packet_cmd
,
5572 show_remote_protocol_Z_packet_cmd
,
5573 &remote_set_cmdlist
, &remote_show_cmdlist
);