1 /* Remote target communications for serial-line targets in custom GDB protocol
3 Copyright 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996,
4 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004
5 Free Software Foundation, Inc.
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 59 Temple Place - Suite 330,
22 Boston, MA 02111-1307, USA. */
24 /* See the GDB User Guide for details of the GDB remote protocol. */
27 #include "gdb_string.h"
34 /*#include "terminal.h" */
37 #include "gdb-stabs.h"
38 #include "gdbthread.h"
42 #include "gdb_assert.h"
47 #include "event-loop.h"
48 #include "event-top.h"
54 #include "gdbcore.h" /* for exec_bfd */
56 #include "remote-fileio.h"
58 /* Prototypes for local functions */
59 static void cleanup_sigint_signal_handler (void *dummy
);
60 static void initialize_sigint_signal_handler (void);
61 static int getpkt_sane (char *buf
, long sizeof_buf
, int forever
);
63 static void handle_remote_sigint (int);
64 static void handle_remote_sigint_twice (int);
65 static void async_remote_interrupt (gdb_client_data
);
66 void async_remote_interrupt_twice (gdb_client_data
);
68 static void build_remote_gdbarch_data (void);
70 static void remote_files_info (struct target_ops
*ignore
);
72 static int remote_xfer_memory (CORE_ADDR memaddr
, char *myaddr
,
73 int len
, int should_write
,
74 struct mem_attrib
*attrib
,
75 struct target_ops
*target
);
77 static void remote_prepare_to_store (void);
79 static void remote_fetch_registers (int regno
);
81 static void remote_resume (ptid_t ptid
, int step
,
82 enum target_signal siggnal
);
83 static void remote_async_resume (ptid_t ptid
, int step
,
84 enum target_signal siggnal
);
85 static int remote_start_remote (struct ui_out
*uiout
, void *dummy
);
87 static void remote_open (char *name
, int from_tty
);
88 static void remote_async_open (char *name
, int from_tty
);
90 static void extended_remote_open (char *name
, int from_tty
);
91 static void extended_remote_async_open (char *name
, int from_tty
);
93 static void remote_open_1 (char *, int, struct target_ops
*, int extended_p
,
96 static void remote_close (int quitting
);
98 static void remote_store_registers (int regno
);
100 static void remote_mourn (void);
101 static void remote_async_mourn (void);
103 static void extended_remote_restart (void);
105 static void extended_remote_mourn (void);
107 static void remote_mourn_1 (struct target_ops
*);
109 static void remote_send (char *buf
, long sizeof_buf
);
111 static int readchar (int timeout
);
113 static ptid_t
remote_wait (ptid_t ptid
,
114 struct target_waitstatus
*status
);
115 static ptid_t
remote_async_wait (ptid_t ptid
,
116 struct target_waitstatus
*status
);
118 static void remote_kill (void);
119 static void remote_async_kill (void);
121 static int tohex (int nib
);
123 static void remote_detach (char *args
, int from_tty
);
125 static void remote_interrupt (int signo
);
127 static void remote_interrupt_twice (int signo
);
129 static void interrupt_query (void);
131 static void set_thread (int, int);
133 static int remote_thread_alive (ptid_t
);
135 static void get_offsets (void);
137 static long read_frame (char *buf
, long sizeof_buf
);
139 static int remote_insert_breakpoint (CORE_ADDR
, char *);
141 static int remote_remove_breakpoint (CORE_ADDR
, char *);
143 static int hexnumlen (ULONGEST num
);
145 static void init_remote_ops (void);
147 static void init_extended_remote_ops (void);
149 static void remote_stop (void);
151 static int ishex (int ch
, int *val
);
153 static int stubhex (int ch
);
155 static int hexnumstr (char *, ULONGEST
);
157 static int hexnumnstr (char *, ULONGEST
, int);
159 static CORE_ADDR
remote_address_masked (CORE_ADDR
);
161 static void print_packet (char *);
163 static unsigned long crc32 (unsigned char *, int, unsigned int);
165 static void compare_sections_command (char *, int);
167 static void packet_command (char *, int);
169 static int stub_unpack_int (char *buff
, int fieldlength
);
171 static ptid_t
remote_current_thread (ptid_t oldptid
);
173 static void remote_find_new_threads (void);
175 static void record_currthread (int currthread
);
177 static int fromhex (int a
);
179 static int hex2bin (const char *hex
, char *bin
, int count
);
181 static int bin2hex (const char *bin
, char *hex
, int count
);
183 static int putpkt_binary (char *buf
, int cnt
);
185 static void check_binary_download (CORE_ADDR addr
);
187 struct packet_config
;
189 static void show_packet_config_cmd (struct packet_config
*config
);
191 static void update_packet_config (struct packet_config
*config
);
193 void _initialize_remote (void);
195 /* Description of the remote protocol. Strictly speaking, when the
196 target is open()ed, remote.c should create a per-target description
197 of the remote protocol using that target's architecture.
198 Unfortunately, the target stack doesn't include local state. For
199 the moment keep the information in the target's architecture
204 long offset
; /* Offset into G packet. */
205 long regnum
; /* GDB's internal register number. */
206 LONGEST pnum
; /* Remote protocol register number. */
207 int in_g_packet
; /* Always part of G packet. */
208 /* long size in bytes; == register_size (current_gdbarch, regnum); at present. */
209 /* char *name; == REGISTER_NAME (regnum); at present. */
214 /* Description of the remote protocol registers. */
215 long sizeof_g_packet
;
217 /* Description of the remote protocol registers indexed by REGNUM
218 (making an array of NUM_REGS + NUM_PSEUDO_REGS in size). */
219 struct packet_reg
*regs
;
221 /* This is the size (in chars) of the first response to the ``g''
222 packet. It is used as a heuristic when determining the maximum
223 size of memory-read and memory-write packets. A target will
224 typically only reserve a buffer large enough to hold the ``g''
225 packet. The size does not include packet overhead (headers and
227 long actual_register_packet_size
;
229 /* This is the maximum size (in chars) of a non read/write packet.
230 It is also used as a cap on the size of read/write packets. */
231 long remote_packet_size
;
235 /* Handle for retreving the remote protocol data from gdbarch. */
236 static struct gdbarch_data
*remote_gdbarch_data_handle
;
238 static struct remote_state
*
239 get_remote_state (void)
241 return gdbarch_data (current_gdbarch
, remote_gdbarch_data_handle
);
245 init_remote_state (struct gdbarch
*gdbarch
)
248 struct remote_state
*rs
= GDBARCH_OBSTACK_ZALLOC (gdbarch
, struct remote_state
);
250 if (deprecated_register_bytes () != 0)
251 rs
->sizeof_g_packet
= deprecated_register_bytes ();
253 rs
->sizeof_g_packet
= 0;
255 /* Assume a 1:1 regnum<->pnum table. */
256 rs
->regs
= GDBARCH_OBSTACK_CALLOC (gdbarch
, NUM_REGS
+ NUM_PSEUDO_REGS
,
258 for (regnum
= 0; regnum
< NUM_REGS
+ NUM_PSEUDO_REGS
; regnum
++)
260 struct packet_reg
*r
= &rs
->regs
[regnum
];
263 r
->offset
= DEPRECATED_REGISTER_BYTE (regnum
);
264 r
->in_g_packet
= (regnum
< NUM_REGS
);
265 /* ...name = REGISTER_NAME (regnum); */
267 /* Compute packet size by accumulating the size of all registers. */
268 if (deprecated_register_bytes () == 0)
269 rs
->sizeof_g_packet
+= register_size (current_gdbarch
, regnum
);
272 /* Default maximum number of characters in a packet body. Many
273 remote stubs have a hardwired buffer size of 400 bytes
274 (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used
275 as the maximum packet-size to ensure that the packet and an extra
276 NUL character can always fit in the buffer. This stops GDB
277 trashing stubs that try to squeeze an extra NUL into what is
278 already a full buffer (As of 1999-12-04 that was most stubs. */
279 rs
->remote_packet_size
= 400 - 1;
281 /* Should rs->sizeof_g_packet needs more space than the
282 default, adjust the size accordingly. Remember that each byte is
283 encoded as two characters. 32 is the overhead for the packet
284 header / footer. NOTE: cagney/1999-10-26: I suspect that 8
285 (``$NN:G...#NN'') is a better guess, the below has been padded a
287 if (rs
->sizeof_g_packet
> ((rs
->remote_packet_size
- 32) / 2))
288 rs
->remote_packet_size
= (rs
->sizeof_g_packet
* 2 + 32);
290 /* This one is filled in when a ``g'' packet is received. */
291 rs
->actual_register_packet_size
= 0;
296 static struct packet_reg
*
297 packet_reg_from_regnum (struct remote_state
*rs
, long regnum
)
299 if (regnum
< 0 && regnum
>= NUM_REGS
+ NUM_PSEUDO_REGS
)
303 struct packet_reg
*r
= &rs
->regs
[regnum
];
304 gdb_assert (r
->regnum
== regnum
);
309 static struct packet_reg
*
310 packet_reg_from_pnum (struct remote_state
*rs
, LONGEST pnum
)
313 for (i
= 0; i
< NUM_REGS
+ NUM_PSEUDO_REGS
; i
++)
315 struct packet_reg
*r
= &rs
->regs
[i
];
322 /* FIXME: graces/2002-08-08: These variables should eventually be
323 bound to an instance of the target object (as in gdbarch-tdep()),
324 when such a thing exists. */
326 /* This is set to the data address of the access causing the target
327 to stop for a watchpoint. */
328 static CORE_ADDR remote_watch_data_address
;
330 /* This is non-zero if taregt stopped for a watchpoint. */
331 static int remote_stopped_by_watchpoint_p
;
334 static struct target_ops remote_ops
;
336 static struct target_ops extended_remote_ops
;
338 /* Temporary target ops. Just like the remote_ops and
339 extended_remote_ops, but with asynchronous support. */
340 static struct target_ops remote_async_ops
;
342 static struct target_ops extended_async_remote_ops
;
344 /* FIXME: cagney/1999-09-23: Even though getpkt was called with
345 ``forever'' still use the normal timeout mechanism. This is
346 currently used by the ASYNC code to guarentee that target reads
347 during the initial connect always time-out. Once getpkt has been
348 modified to return a timeout indication and, in turn
349 remote_wait()/wait_for_inferior() have gained a timeout parameter
351 static int wait_forever_enabled_p
= 1;
354 /* This variable chooses whether to send a ^C or a break when the user
355 requests program interruption. Although ^C is usually what remote
356 systems expect, and that is the default here, sometimes a break is
357 preferable instead. */
359 static int remote_break
;
361 /* Descriptor for I/O to remote machine. Initialize it to NULL so that
362 remote_open knows that we don't have a file open when the program
364 static struct serial
*remote_desc
= NULL
;
366 /* This variable sets the number of bits in an address that are to be
367 sent in a memory ("M" or "m") packet. Normally, after stripping
368 leading zeros, the entire address would be sent. This variable
369 restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The
370 initial implementation of remote.c restricted the address sent in
371 memory packets to ``host::sizeof long'' bytes - (typically 32
372 bits). Consequently, for 64 bit targets, the upper 32 bits of an
373 address was never sent. Since fixing this bug may cause a break in
374 some remote targets this variable is principly provided to
375 facilitate backward compatibility. */
377 static int remote_address_size
;
379 /* Tempoary to track who currently owns the terminal. See
380 target_async_terminal_* for more details. */
382 static int remote_async_terminal_ours_p
;
385 /* User configurable variables for the number of characters in a
386 memory read/write packet. MIN ((rs->remote_packet_size),
387 rs->sizeof_g_packet) is the default. Some targets need smaller
388 values (fifo overruns, et.al.) and some users need larger values
389 (speed up transfers). The variables ``preferred_*'' (the user
390 request), ``current_*'' (what was actually set) and ``forced_*''
391 (Positive - a soft limit, negative - a hard limit). */
393 struct memory_packet_config
400 /* Compute the current size of a read/write packet. Since this makes
401 use of ``actual_register_packet_size'' the computation is dynamic. */
404 get_memory_packet_size (struct memory_packet_config
*config
)
406 struct remote_state
*rs
= get_remote_state ();
407 /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk
408 law?) that some hosts don't cope very well with large alloca()
409 calls. Eventually the alloca() code will be replaced by calls to
410 xmalloc() and make_cleanups() allowing this restriction to either
411 be lifted or removed. */
412 #ifndef MAX_REMOTE_PACKET_SIZE
413 #define MAX_REMOTE_PACKET_SIZE 16384
415 /* NOTE: 16 is just chosen at random. */
416 #ifndef MIN_REMOTE_PACKET_SIZE
417 #define MIN_REMOTE_PACKET_SIZE 16
422 if (config
->size
<= 0)
423 what_they_get
= MAX_REMOTE_PACKET_SIZE
;
425 what_they_get
= config
->size
;
429 what_they_get
= (rs
->remote_packet_size
);
430 /* Limit the packet to the size specified by the user. */
432 && what_they_get
> config
->size
)
433 what_they_get
= config
->size
;
434 /* Limit it to the size of the targets ``g'' response. */
435 if ((rs
->actual_register_packet_size
) > 0
436 && what_they_get
> (rs
->actual_register_packet_size
))
437 what_they_get
= (rs
->actual_register_packet_size
);
439 if (what_they_get
> MAX_REMOTE_PACKET_SIZE
)
440 what_they_get
= MAX_REMOTE_PACKET_SIZE
;
441 if (what_they_get
< MIN_REMOTE_PACKET_SIZE
)
442 what_they_get
= MIN_REMOTE_PACKET_SIZE
;
443 return what_they_get
;
446 /* Update the size of a read/write packet. If they user wants
447 something really big then do a sanity check. */
450 set_memory_packet_size (char *args
, struct memory_packet_config
*config
)
452 int fixed_p
= config
->fixed_p
;
453 long size
= config
->size
;
455 error ("Argument required (integer, `fixed' or `limited').");
456 else if (strcmp (args
, "hard") == 0
457 || strcmp (args
, "fixed") == 0)
459 else if (strcmp (args
, "soft") == 0
460 || strcmp (args
, "limit") == 0)
465 size
= strtoul (args
, &end
, 0);
467 error ("Invalid %s (bad syntax).", config
->name
);
469 /* Instead of explicitly capping the size of a packet to
470 MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is
471 instead allowed to set the size to something arbitrarily
473 if (size
> MAX_REMOTE_PACKET_SIZE
)
474 error ("Invalid %s (too large).", config
->name
);
478 if (fixed_p
&& !config
->fixed_p
)
480 if (! query ("The target may not be able to correctly handle a %s\n"
481 "of %ld bytes. Change the packet size? ",
483 error ("Packet size not changed.");
485 /* Update the config. */
486 config
->fixed_p
= fixed_p
;
491 show_memory_packet_size (struct memory_packet_config
*config
)
493 printf_filtered ("The %s is %ld. ", config
->name
, config
->size
);
495 printf_filtered ("Packets are fixed at %ld bytes.\n",
496 get_memory_packet_size (config
));
498 printf_filtered ("Packets are limited to %ld bytes.\n",
499 get_memory_packet_size (config
));
502 static struct memory_packet_config memory_write_packet_config
=
504 "memory-write-packet-size",
508 set_memory_write_packet_size (char *args
, int from_tty
)
510 set_memory_packet_size (args
, &memory_write_packet_config
);
514 show_memory_write_packet_size (char *args
, int from_tty
)
516 show_memory_packet_size (&memory_write_packet_config
);
520 get_memory_write_packet_size (void)
522 return get_memory_packet_size (&memory_write_packet_config
);
525 static struct memory_packet_config memory_read_packet_config
=
527 "memory-read-packet-size",
531 set_memory_read_packet_size (char *args
, int from_tty
)
533 set_memory_packet_size (args
, &memory_read_packet_config
);
537 show_memory_read_packet_size (char *args
, int from_tty
)
539 show_memory_packet_size (&memory_read_packet_config
);
543 get_memory_read_packet_size (void)
545 struct remote_state
*rs
= get_remote_state ();
546 long size
= get_memory_packet_size (&memory_read_packet_config
);
547 /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an
548 extra buffer size argument before the memory read size can be
549 increased beyond (rs->remote_packet_size). */
550 if (size
> (rs
->remote_packet_size
))
551 size
= (rs
->remote_packet_size
);
556 /* Generic configuration support for packets the stub optionally
557 supports. Allows the user to specify the use of the packet as well
558 as allowing GDB to auto-detect support in the remote stub. */
562 PACKET_SUPPORT_UNKNOWN
= 0,
571 enum auto_boolean detect
;
572 enum packet_support support
;
575 /* Analyze a packet's return value and update the packet config
586 update_packet_config (struct packet_config
*config
)
588 switch (config
->detect
)
590 case AUTO_BOOLEAN_TRUE
:
591 config
->support
= PACKET_ENABLE
;
593 case AUTO_BOOLEAN_FALSE
:
594 config
->support
= PACKET_DISABLE
;
596 case AUTO_BOOLEAN_AUTO
:
597 config
->support
= PACKET_SUPPORT_UNKNOWN
;
603 show_packet_config_cmd (struct packet_config
*config
)
605 char *support
= "internal-error";
606 switch (config
->support
)
612 support
= "disabled";
614 case PACKET_SUPPORT_UNKNOWN
:
618 switch (config
->detect
)
620 case AUTO_BOOLEAN_AUTO
:
621 printf_filtered ("Support for remote protocol `%s' (%s) packet is auto-detected, currently %s.\n",
622 config
->name
, config
->title
, support
);
624 case AUTO_BOOLEAN_TRUE
:
625 case AUTO_BOOLEAN_FALSE
:
626 printf_filtered ("Support for remote protocol `%s' (%s) packet is currently %s.\n",
627 config
->name
, config
->title
, support
);
633 add_packet_config_cmd (struct packet_config
*config
,
636 cmd_sfunc_ftype
*set_func
,
637 cmd_sfunc_ftype
*show_func
,
638 struct cmd_list_element
**set_remote_list
,
639 struct cmd_list_element
**show_remote_list
,
642 struct cmd_list_element
*set_cmd
;
643 struct cmd_list_element
*show_cmd
;
650 config
->title
= title
;
651 config
->detect
= AUTO_BOOLEAN_AUTO
;
652 config
->support
= PACKET_SUPPORT_UNKNOWN
;
653 set_doc
= xstrprintf ("Set use of remote protocol `%s' (%s) packet",
655 show_doc
= xstrprintf ("Show current use of remote protocol `%s' (%s) packet",
657 print
= xstrprintf ("Current use of remote protocol `%s' (%s) is %%s",
659 /* set/show TITLE-packet {auto,on,off} */
660 cmd_name
= xstrprintf ("%s-packet", title
);
661 add_setshow_auto_boolean_cmd (cmd_name
, class_obscure
,
662 &config
->detect
, set_doc
, show_doc
,
665 set_remote_list
, show_remote_list
);
666 /* set/show remote NAME-packet {auto,on,off} -- legacy */
670 legacy_name
= xstrprintf ("%s-packet", name
);
671 add_alias_cmd (legacy_name
, cmd_name
, class_obscure
, 0,
673 add_alias_cmd (legacy_name
, cmd_name
, class_obscure
, 0,
678 static enum packet_result
679 packet_ok (const char *buf
, struct packet_config
*config
)
683 /* The stub recognized the packet request. Check that the
684 operation succeeded. */
685 switch (config
->support
)
687 case PACKET_SUPPORT_UNKNOWN
:
689 fprintf_unfiltered (gdb_stdlog
,
690 "Packet %s (%s) is supported\n",
691 config
->name
, config
->title
);
692 config
->support
= PACKET_ENABLE
;
695 internal_error (__FILE__
, __LINE__
,
696 "packet_ok: attempt to use a disabled packet");
701 if (buf
[0] == 'O' && buf
[1] == 'K' && buf
[2] == '\0')
702 /* "OK" - definitly OK. */
705 && isxdigit (buf
[1]) && isxdigit (buf
[2])
707 /* "Enn" - definitly an error. */
709 /* The packet may or may not be OK. Just assume it is */
714 /* The stub does not support the packet. */
715 switch (config
->support
)
718 if (config
->detect
== AUTO_BOOLEAN_AUTO
)
719 /* If the stub previously indicated that the packet was
720 supported then there is a protocol error.. */
721 error ("Protocol error: %s (%s) conflicting enabled responses.",
722 config
->name
, config
->title
);
724 /* The user set it wrong. */
725 error ("Enabled packet %s (%s) not recognized by stub",
726 config
->name
, config
->title
);
728 case PACKET_SUPPORT_UNKNOWN
:
730 fprintf_unfiltered (gdb_stdlog
,
731 "Packet %s (%s) is NOT supported\n",
732 config
->name
, config
->title
);
733 config
->support
= PACKET_DISABLE
;
738 return PACKET_UNKNOWN
;
742 /* Should we try the 'vCont' (descriptive resume) request? */
743 static struct packet_config remote_protocol_vcont
;
746 set_remote_protocol_vcont_packet_cmd (char *args
, int from_tty
,
747 struct cmd_list_element
*c
)
749 update_packet_config (&remote_protocol_vcont
);
753 show_remote_protocol_vcont_packet_cmd (char *args
, int from_tty
,
754 struct cmd_list_element
*c
)
756 show_packet_config_cmd (&remote_protocol_vcont
);
759 /* Should we try the 'qSymbol' (target symbol lookup service) request? */
760 static struct packet_config remote_protocol_qSymbol
;
763 set_remote_protocol_qSymbol_packet_cmd (char *args
, int from_tty
,
764 struct cmd_list_element
*c
)
766 update_packet_config (&remote_protocol_qSymbol
);
770 show_remote_protocol_qSymbol_packet_cmd (char *args
, int from_tty
,
771 struct cmd_list_element
*c
)
773 show_packet_config_cmd (&remote_protocol_qSymbol
);
776 /* Should we try the 'P' (set register) request? */
778 static struct packet_config remote_protocol_P
;
781 set_remote_protocol_P_packet_cmd (char *args
, int from_tty
,
782 struct cmd_list_element
*c
)
784 update_packet_config (&remote_protocol_P
);
788 show_remote_protocol_P_packet_cmd (char *args
, int from_tty
,
789 struct cmd_list_element
*c
)
791 show_packet_config_cmd (&remote_protocol_P
);
794 /* Should we try one of the 'Z' requests? */
798 Z_PACKET_SOFTWARE_BP
,
799 Z_PACKET_HARDWARE_BP
,
806 static struct packet_config remote_protocol_Z
[NR_Z_PACKET_TYPES
];
808 /* FIXME: Instead of having all these boiler plate functions, the
809 command callback should include a context argument. */
812 set_remote_protocol_Z_software_bp_packet_cmd (char *args
, int from_tty
,
813 struct cmd_list_element
*c
)
815 update_packet_config (&remote_protocol_Z
[Z_PACKET_SOFTWARE_BP
]);
819 show_remote_protocol_Z_software_bp_packet_cmd (char *args
, int from_tty
,
820 struct cmd_list_element
*c
)
822 show_packet_config_cmd (&remote_protocol_Z
[Z_PACKET_SOFTWARE_BP
]);
826 set_remote_protocol_Z_hardware_bp_packet_cmd (char *args
, int from_tty
,
827 struct cmd_list_element
*c
)
829 update_packet_config (&remote_protocol_Z
[Z_PACKET_HARDWARE_BP
]);
833 show_remote_protocol_Z_hardware_bp_packet_cmd (char *args
, int from_tty
,
834 struct cmd_list_element
*c
)
836 show_packet_config_cmd (&remote_protocol_Z
[Z_PACKET_HARDWARE_BP
]);
840 set_remote_protocol_Z_write_wp_packet_cmd (char *args
, int from_tty
,
841 struct cmd_list_element
*c
)
843 update_packet_config (&remote_protocol_Z
[Z_PACKET_WRITE_WP
]);
847 show_remote_protocol_Z_write_wp_packet_cmd (char *args
, int from_tty
,
848 struct cmd_list_element
*c
)
850 show_packet_config_cmd (&remote_protocol_Z
[Z_PACKET_WRITE_WP
]);
854 set_remote_protocol_Z_read_wp_packet_cmd (char *args
, int from_tty
,
855 struct cmd_list_element
*c
)
857 update_packet_config (&remote_protocol_Z
[Z_PACKET_READ_WP
]);
861 show_remote_protocol_Z_read_wp_packet_cmd (char *args
, int from_tty
,
862 struct cmd_list_element
*c
)
864 show_packet_config_cmd (&remote_protocol_Z
[Z_PACKET_READ_WP
]);
868 set_remote_protocol_Z_access_wp_packet_cmd (char *args
, int from_tty
,
869 struct cmd_list_element
*c
)
871 update_packet_config (&remote_protocol_Z
[Z_PACKET_ACCESS_WP
]);
875 show_remote_protocol_Z_access_wp_packet_cmd (char *args
, int from_tty
,
876 struct cmd_list_element
*c
)
878 show_packet_config_cmd (&remote_protocol_Z
[Z_PACKET_ACCESS_WP
]);
881 /* For compatibility with older distributions. Provide a ``set remote
882 Z-packet ...'' command that updates all the Z packet types. */
884 static enum auto_boolean remote_Z_packet_detect
;
887 set_remote_protocol_Z_packet_cmd (char *args
, int from_tty
,
888 struct cmd_list_element
*c
)
891 for (i
= 0; i
< NR_Z_PACKET_TYPES
; i
++)
893 remote_protocol_Z
[i
].detect
= remote_Z_packet_detect
;
894 update_packet_config (&remote_protocol_Z
[i
]);
899 show_remote_protocol_Z_packet_cmd (char *args
, int from_tty
,
900 struct cmd_list_element
*c
)
903 for (i
= 0; i
< NR_Z_PACKET_TYPES
; i
++)
905 show_packet_config_cmd (&remote_protocol_Z
[i
]);
909 /* Should we try the 'X' (remote binary download) packet?
911 This variable (available to the user via "set remote X-packet")
912 dictates whether downloads are sent in binary (via the 'X' packet).
913 We assume that the stub can, and attempt to do it. This will be
914 cleared if the stub does not understand it. This switch is still
915 needed, though in cases when the packet is supported in the stub,
916 but the connection does not allow it (i.e., 7-bit serial connection
919 static struct packet_config remote_protocol_binary_download
;
921 /* Should we try the 'ThreadInfo' query packet?
923 This variable (NOT available to the user: auto-detect only!)
924 determines whether GDB will use the new, simpler "ThreadInfo"
925 query or the older, more complex syntax for thread queries.
926 This is an auto-detect variable (set to true at each connect,
927 and set to false when the target fails to recognize it). */
929 static int use_threadinfo_query
;
930 static int use_threadextra_query
;
933 set_remote_protocol_binary_download_cmd (char *args
,
935 struct cmd_list_element
*c
)
937 update_packet_config (&remote_protocol_binary_download
);
941 show_remote_protocol_binary_download_cmd (char *args
, int from_tty
,
942 struct cmd_list_element
*c
)
944 show_packet_config_cmd (&remote_protocol_binary_download
);
947 /* Should we try the 'qPart:auxv' (target auxiliary vector read) request? */
948 static struct packet_config remote_protocol_qPart_auxv
;
951 set_remote_protocol_qPart_auxv_packet_cmd (char *args
, int from_tty
,
952 struct cmd_list_element
*c
)
954 update_packet_config (&remote_protocol_qPart_auxv
);
958 show_remote_protocol_qPart_auxv_packet_cmd (char *args
, int from_tty
,
959 struct cmd_list_element
*c
)
961 show_packet_config_cmd (&remote_protocol_qPart_auxv
);
965 /* Tokens for use by the asynchronous signal handlers for SIGINT */
966 static void *sigint_remote_twice_token
;
967 static void *sigint_remote_token
;
969 /* These are pointers to hook functions that may be set in order to
970 modify resume/wait behavior for a particular architecture. */
972 void (*deprecated_target_resume_hook
) (void);
973 void (*deprecated_target_wait_loop_hook
) (void);
977 /* These are the threads which we last sent to the remote system.
978 -1 for all or -2 for not sent yet. */
979 static int general_thread
;
980 static int continue_thread
;
982 /* Call this function as a result of
983 1) A halt indication (T packet) containing a thread id
984 2) A direct query of currthread
985 3) Successful execution of set thread
989 record_currthread (int currthread
)
991 general_thread
= currthread
;
993 /* If this is a new thread, add it to GDB's thread list.
994 If we leave it up to WFI to do this, bad things will happen. */
995 if (!in_thread_list (pid_to_ptid (currthread
)))
997 add_thread (pid_to_ptid (currthread
));
998 ui_out_text (uiout
, "[New ");
999 ui_out_text (uiout
, target_pid_to_str (pid_to_ptid (currthread
)));
1000 ui_out_text (uiout
, "]\n");
1004 #define MAGIC_NULL_PID 42000
1007 set_thread (int th
, int gen
)
1009 struct remote_state
*rs
= get_remote_state ();
1010 char *buf
= alloca (rs
->remote_packet_size
);
1011 int state
= gen
? general_thread
: continue_thread
;
1017 buf
[1] = gen
? 'g' : 'c';
1018 if (th
== MAGIC_NULL_PID
)
1024 sprintf (&buf
[2], "-%x", -th
);
1026 sprintf (&buf
[2], "%x", th
);
1028 getpkt (buf
, (rs
->remote_packet_size
), 0);
1030 general_thread
= th
;
1032 continue_thread
= th
;
1035 /* Return nonzero if the thread TH is still alive on the remote system. */
1038 remote_thread_alive (ptid_t ptid
)
1040 int tid
= PIDGET (ptid
);
1044 sprintf (buf
, "T-%08x", -tid
);
1046 sprintf (buf
, "T%08x", tid
);
1048 getpkt (buf
, sizeof (buf
), 0);
1049 return (buf
[0] == 'O' && buf
[1] == 'K');
1052 /* About these extended threadlist and threadinfo packets. They are
1053 variable length packets but, the fields within them are often fixed
1054 length. They are redundent enough to send over UDP as is the
1055 remote protocol in general. There is a matching unit test module
1058 #define OPAQUETHREADBYTES 8
1060 /* a 64 bit opaque identifier */
1061 typedef unsigned char threadref
[OPAQUETHREADBYTES
];
1063 /* WARNING: This threadref data structure comes from the remote O.S., libstub
1064 protocol encoding, and remote.c. it is not particularly changable */
1066 /* Right now, the internal structure is int. We want it to be bigger.
1070 typedef int gdb_threadref
; /* internal GDB thread reference */
1072 /* gdb_ext_thread_info is an internal GDB data structure which is
1073 equivalint to the reply of the remote threadinfo packet */
1075 struct gdb_ext_thread_info
1077 threadref threadid
; /* External form of thread reference */
1078 int active
; /* Has state interesting to GDB? , regs, stack */
1079 char display
[256]; /* Brief state display, name, blocked/syspended */
1080 char shortname
[32]; /* To be used to name threads */
1081 char more_display
[256]; /* Long info, statistics, queue depth, whatever */
1084 /* The volume of remote transfers can be limited by submitting
1085 a mask containing bits specifying the desired information.
1086 Use a union of these values as the 'selection' parameter to
1087 get_thread_info. FIXME: Make these TAG names more thread specific.
1090 #define TAG_THREADID 1
1091 #define TAG_EXISTS 2
1092 #define TAG_DISPLAY 4
1093 #define TAG_THREADNAME 8
1094 #define TAG_MOREDISPLAY 16
1096 #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES*2)
1098 char *unpack_varlen_hex (char *buff
, ULONGEST
*result
);
1100 static char *unpack_nibble (char *buf
, int *val
);
1102 static char *pack_nibble (char *buf
, int nibble
);
1104 static char *pack_hex_byte (char *pkt
, int /*unsigned char */ byte
);
1106 static char *unpack_byte (char *buf
, int *value
);
1108 static char *pack_int (char *buf
, int value
);
1110 static char *unpack_int (char *buf
, int *value
);
1112 static char *unpack_string (char *src
, char *dest
, int length
);
1114 static char *pack_threadid (char *pkt
, threadref
* id
);
1116 static char *unpack_threadid (char *inbuf
, threadref
* id
);
1118 void int_to_threadref (threadref
* id
, int value
);
1120 static int threadref_to_int (threadref
* ref
);
1122 static void copy_threadref (threadref
* dest
, threadref
* src
);
1124 static int threadmatch (threadref
* dest
, threadref
* src
);
1126 static char *pack_threadinfo_request (char *pkt
, int mode
, threadref
* id
);
1128 static int remote_unpack_thread_info_response (char *pkt
,
1129 threadref
* expectedref
,
1130 struct gdb_ext_thread_info
1134 static int remote_get_threadinfo (threadref
* threadid
, int fieldset
, /*TAG mask */
1135 struct gdb_ext_thread_info
*info
);
1137 static char *pack_threadlist_request (char *pkt
, int startflag
,
1139 threadref
* nextthread
);
1141 static int parse_threadlist_response (char *pkt
,
1143 threadref
* original_echo
,
1144 threadref
* resultlist
, int *doneflag
);
1146 static int remote_get_threadlist (int startflag
,
1147 threadref
* nextthread
,
1150 int *result_count
, threadref
* threadlist
);
1152 typedef int (*rmt_thread_action
) (threadref
* ref
, void *context
);
1154 static int remote_threadlist_iterator (rmt_thread_action stepfunction
,
1155 void *context
, int looplimit
);
1157 static int remote_newthread_step (threadref
* ref
, void *context
);
1159 /* encode 64 bits in 16 chars of hex */
1161 static const char hexchars
[] = "0123456789abcdef";
1164 ishex (int ch
, int *val
)
1166 if ((ch
>= 'a') && (ch
<= 'f'))
1168 *val
= ch
- 'a' + 10;
1171 if ((ch
>= 'A') && (ch
<= 'F'))
1173 *val
= ch
- 'A' + 10;
1176 if ((ch
>= '0') && (ch
<= '9'))
1187 if (ch
>= 'a' && ch
<= 'f')
1188 return ch
- 'a' + 10;
1189 if (ch
>= '0' && ch
<= '9')
1191 if (ch
>= 'A' && ch
<= 'F')
1192 return ch
- 'A' + 10;
1197 stub_unpack_int (char *buff
, int fieldlength
)
1204 nibble
= stubhex (*buff
++);
1208 retval
= retval
<< 4;
1214 unpack_varlen_hex (char *buff
, /* packet to parse */
1220 while (ishex (*buff
, &nibble
))
1223 retval
= retval
<< 4;
1224 retval
|= nibble
& 0x0f;
1231 unpack_nibble (char *buf
, int *val
)
1233 ishex (*buf
++, val
);
1238 pack_nibble (char *buf
, int nibble
)
1240 *buf
++ = hexchars
[(nibble
& 0x0f)];
1245 pack_hex_byte (char *pkt
, int byte
)
1247 *pkt
++ = hexchars
[(byte
>> 4) & 0xf];
1248 *pkt
++ = hexchars
[(byte
& 0xf)];
1253 unpack_byte (char *buf
, int *value
)
1255 *value
= stub_unpack_int (buf
, 2);
1260 pack_int (char *buf
, int value
)
1262 buf
= pack_hex_byte (buf
, (value
>> 24) & 0xff);
1263 buf
= pack_hex_byte (buf
, (value
>> 16) & 0xff);
1264 buf
= pack_hex_byte (buf
, (value
>> 8) & 0x0ff);
1265 buf
= pack_hex_byte (buf
, (value
& 0xff));
1270 unpack_int (char *buf
, int *value
)
1272 *value
= stub_unpack_int (buf
, 8);
1276 #if 0 /* currently unused, uncomment when needed */
1277 static char *pack_string (char *pkt
, char *string
);
1280 pack_string (char *pkt
, char *string
)
1285 len
= strlen (string
);
1287 len
= 200; /* Bigger than most GDB packets, junk??? */
1288 pkt
= pack_hex_byte (pkt
, len
);
1292 if ((ch
== '\0') || (ch
== '#'))
1293 ch
= '*'; /* Protect encapsulation */
1298 #endif /* 0 (unused) */
1301 unpack_string (char *src
, char *dest
, int length
)
1310 pack_threadid (char *pkt
, threadref
*id
)
1313 unsigned char *altid
;
1315 altid
= (unsigned char *) id
;
1316 limit
= pkt
+ BUF_THREAD_ID_SIZE
;
1318 pkt
= pack_hex_byte (pkt
, *altid
++);
1324 unpack_threadid (char *inbuf
, threadref
*id
)
1327 char *limit
= inbuf
+ BUF_THREAD_ID_SIZE
;
1330 altref
= (char *) id
;
1332 while (inbuf
< limit
)
1334 x
= stubhex (*inbuf
++);
1335 y
= stubhex (*inbuf
++);
1336 *altref
++ = (x
<< 4) | y
;
1341 /* Externally, threadrefs are 64 bits but internally, they are still
1342 ints. This is due to a mismatch of specifications. We would like
1343 to use 64bit thread references internally. This is an adapter
1347 int_to_threadref (threadref
*id
, int value
)
1349 unsigned char *scan
;
1351 scan
= (unsigned char *) id
;
1357 *scan
++ = (value
>> 24) & 0xff;
1358 *scan
++ = (value
>> 16) & 0xff;
1359 *scan
++ = (value
>> 8) & 0xff;
1360 *scan
++ = (value
& 0xff);
1364 threadref_to_int (threadref
*ref
)
1367 unsigned char *scan
;
1369 scan
= (char *) ref
;
1373 value
= (value
<< 8) | ((*scan
++) & 0xff);
1378 copy_threadref (threadref
*dest
, threadref
*src
)
1381 unsigned char *csrc
, *cdest
;
1383 csrc
= (unsigned char *) src
;
1384 cdest
= (unsigned char *) dest
;
1391 threadmatch (threadref
*dest
, threadref
*src
)
1393 /* things are broken right now, so just assume we got a match */
1395 unsigned char *srcp
, *destp
;
1397 srcp
= (char *) src
;
1398 destp
= (char *) dest
;
1402 result
&= (*srcp
++ == *destp
++) ? 1 : 0;
1409 threadid:1, # always request threadid
1416 /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */
1419 pack_threadinfo_request (char *pkt
, int mode
, threadref
*id
)
1421 *pkt
++ = 'q'; /* Info Query */
1422 *pkt
++ = 'P'; /* process or thread info */
1423 pkt
= pack_int (pkt
, mode
); /* mode */
1424 pkt
= pack_threadid (pkt
, id
); /* threadid */
1425 *pkt
= '\0'; /* terminate */
1429 /* These values tag the fields in a thread info response packet */
1430 /* Tagging the fields allows us to request specific fields and to
1431 add more fields as time goes by */
1433 #define TAG_THREADID 1 /* Echo the thread identifier */
1434 #define TAG_EXISTS 2 /* Is this process defined enough to
1435 fetch registers and its stack */
1436 #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */
1437 #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is */
1438 #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about
1442 remote_unpack_thread_info_response (char *pkt
, threadref
*expectedref
,
1443 struct gdb_ext_thread_info
*info
)
1445 struct remote_state
*rs
= get_remote_state ();
1449 char *limit
= pkt
+ (rs
->remote_packet_size
); /* plausable parsing limit */
1452 /* info->threadid = 0; FIXME: implement zero_threadref */
1454 info
->display
[0] = '\0';
1455 info
->shortname
[0] = '\0';
1456 info
->more_display
[0] = '\0';
1458 /* Assume the characters indicating the packet type have been stripped */
1459 pkt
= unpack_int (pkt
, &mask
); /* arg mask */
1460 pkt
= unpack_threadid (pkt
, &ref
);
1463 warning ("Incomplete response to threadinfo request\n");
1464 if (!threadmatch (&ref
, expectedref
))
1465 { /* This is an answer to a different request */
1466 warning ("ERROR RMT Thread info mismatch\n");
1469 copy_threadref (&info
->threadid
, &ref
);
1471 /* Loop on tagged fields , try to bail if somthing goes wrong */
1473 while ((pkt
< limit
) && mask
&& *pkt
) /* packets are terminated with nulls */
1475 pkt
= unpack_int (pkt
, &tag
); /* tag */
1476 pkt
= unpack_byte (pkt
, &length
); /* length */
1477 if (!(tag
& mask
)) /* tags out of synch with mask */
1479 warning ("ERROR RMT: threadinfo tag mismatch\n");
1483 if (tag
== TAG_THREADID
)
1487 warning ("ERROR RMT: length of threadid is not 16\n");
1491 pkt
= unpack_threadid (pkt
, &ref
);
1492 mask
= mask
& ~TAG_THREADID
;
1495 if (tag
== TAG_EXISTS
)
1497 info
->active
= stub_unpack_int (pkt
, length
);
1499 mask
= mask
& ~(TAG_EXISTS
);
1502 warning ("ERROR RMT: 'exists' length too long\n");
1508 if (tag
== TAG_THREADNAME
)
1510 pkt
= unpack_string (pkt
, &info
->shortname
[0], length
);
1511 mask
= mask
& ~TAG_THREADNAME
;
1514 if (tag
== TAG_DISPLAY
)
1516 pkt
= unpack_string (pkt
, &info
->display
[0], length
);
1517 mask
= mask
& ~TAG_DISPLAY
;
1520 if (tag
== TAG_MOREDISPLAY
)
1522 pkt
= unpack_string (pkt
, &info
->more_display
[0], length
);
1523 mask
= mask
& ~TAG_MOREDISPLAY
;
1526 warning ("ERROR RMT: unknown thread info tag\n");
1527 break; /* Not a tag we know about */
1533 remote_get_threadinfo (threadref
*threadid
, int fieldset
, /* TAG mask */
1534 struct gdb_ext_thread_info
*info
)
1536 struct remote_state
*rs
= get_remote_state ();
1538 char *threadinfo_pkt
= alloca (rs
->remote_packet_size
);
1540 pack_threadinfo_request (threadinfo_pkt
, fieldset
, threadid
);
1541 putpkt (threadinfo_pkt
);
1542 getpkt (threadinfo_pkt
, (rs
->remote_packet_size
), 0);
1543 result
= remote_unpack_thread_info_response (threadinfo_pkt
+ 2, threadid
,
1548 /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */
1551 pack_threadlist_request (char *pkt
, int startflag
, int threadcount
,
1552 threadref
*nextthread
)
1554 *pkt
++ = 'q'; /* info query packet */
1555 *pkt
++ = 'L'; /* Process LIST or threadLIST request */
1556 pkt
= pack_nibble (pkt
, startflag
); /* initflag 1 bytes */
1557 pkt
= pack_hex_byte (pkt
, threadcount
); /* threadcount 2 bytes */
1558 pkt
= pack_threadid (pkt
, nextthread
); /* 64 bit thread identifier */
1563 /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */
1566 parse_threadlist_response (char *pkt
, int result_limit
,
1567 threadref
*original_echo
, threadref
*resultlist
,
1570 struct remote_state
*rs
= get_remote_state ();
1572 int count
, resultcount
, done
;
1575 /* Assume the 'q' and 'M chars have been stripped. */
1576 limit
= pkt
+ ((rs
->remote_packet_size
) - BUF_THREAD_ID_SIZE
); /* done parse past here */
1577 pkt
= unpack_byte (pkt
, &count
); /* count field */
1578 pkt
= unpack_nibble (pkt
, &done
);
1579 /* The first threadid is the argument threadid. */
1580 pkt
= unpack_threadid (pkt
, original_echo
); /* should match query packet */
1581 while ((count
-- > 0) && (pkt
< limit
))
1583 pkt
= unpack_threadid (pkt
, resultlist
++);
1584 if (resultcount
++ >= result_limit
)
1593 remote_get_threadlist (int startflag
, threadref
*nextthread
, int result_limit
,
1594 int *done
, int *result_count
, threadref
*threadlist
)
1596 struct remote_state
*rs
= get_remote_state ();
1597 static threadref echo_nextthread
;
1598 char *threadlist_packet
= alloca (rs
->remote_packet_size
);
1599 char *t_response
= alloca (rs
->remote_packet_size
);
1602 /* Trancate result limit to be smaller than the packet size */
1603 if ((((result_limit
+ 1) * BUF_THREAD_ID_SIZE
) + 10) >= (rs
->remote_packet_size
))
1604 result_limit
= ((rs
->remote_packet_size
) / BUF_THREAD_ID_SIZE
) - 2;
1606 pack_threadlist_request (threadlist_packet
,
1607 startflag
, result_limit
, nextthread
);
1608 putpkt (threadlist_packet
);
1609 getpkt (t_response
, (rs
->remote_packet_size
), 0);
1612 parse_threadlist_response (t_response
+ 2, result_limit
, &echo_nextthread
,
1615 if (!threadmatch (&echo_nextthread
, nextthread
))
1617 /* FIXME: This is a good reason to drop the packet */
1618 /* Possably, there is a duplicate response */
1620 retransmit immediatly - race conditions
1621 retransmit after timeout - yes
1623 wait for packet, then exit
1625 warning ("HMM: threadlist did not echo arg thread, dropping it\n");
1626 return 0; /* I choose simply exiting */
1628 if (*result_count
<= 0)
1632 warning ("RMT ERROR : failed to get remote thread list\n");
1635 return result
; /* break; */
1637 if (*result_count
> result_limit
)
1640 warning ("RMT ERROR: threadlist response longer than requested\n");
1646 /* This is the interface between remote and threads, remotes upper interface */
1648 /* remote_find_new_threads retrieves the thread list and for each
1649 thread in the list, looks up the thread in GDB's internal list,
1650 ading the thread if it does not already exist. This involves
1651 getting partial thread lists from the remote target so, polling the
1652 quit_flag is required. */
1655 /* About this many threadisds fit in a packet. */
1657 #define MAXTHREADLISTRESULTS 32
1660 remote_threadlist_iterator (rmt_thread_action stepfunction
, void *context
,
1663 int done
, i
, result_count
;
1667 static threadref nextthread
;
1668 static threadref resultthreadlist
[MAXTHREADLISTRESULTS
];
1673 if (loopcount
++ > looplimit
)
1676 warning ("Remote fetch threadlist -infinite loop-\n");
1679 if (!remote_get_threadlist (startflag
, &nextthread
, MAXTHREADLISTRESULTS
,
1680 &done
, &result_count
, resultthreadlist
))
1685 /* clear for later iterations */
1687 /* Setup to resume next batch of thread references, set nextthread. */
1688 if (result_count
>= 1)
1689 copy_threadref (&nextthread
, &resultthreadlist
[result_count
- 1]);
1691 while (result_count
--)
1692 if (!(result
= (*stepfunction
) (&resultthreadlist
[i
++], context
)))
1699 remote_newthread_step (threadref
*ref
, void *context
)
1703 ptid
= pid_to_ptid (threadref_to_int (ref
));
1705 if (!in_thread_list (ptid
))
1707 return 1; /* continue iterator */
1710 #define CRAZY_MAX_THREADS 1000
1713 remote_current_thread (ptid_t oldpid
)
1715 struct remote_state
*rs
= get_remote_state ();
1716 char *buf
= alloca (rs
->remote_packet_size
);
1719 getpkt (buf
, (rs
->remote_packet_size
), 0);
1720 if (buf
[0] == 'Q' && buf
[1] == 'C')
1721 return pid_to_ptid (strtol (&buf
[2], NULL
, 16));
1726 /* Find new threads for info threads command.
1727 * Original version, using John Metzler's thread protocol.
1731 remote_find_new_threads (void)
1733 remote_threadlist_iterator (remote_newthread_step
, 0,
1735 if (PIDGET (inferior_ptid
) == MAGIC_NULL_PID
) /* ack ack ack */
1736 inferior_ptid
= remote_current_thread (inferior_ptid
);
1740 * Find all threads for info threads command.
1741 * Uses new thread protocol contributed by Cisco.
1742 * Falls back and attempts to use the older method (above)
1743 * if the target doesn't respond to the new method.
1747 remote_threads_info (void)
1749 struct remote_state
*rs
= get_remote_state ();
1750 char *buf
= alloca (rs
->remote_packet_size
);
1754 if (remote_desc
== 0) /* paranoia */
1755 error ("Command can only be used when connected to the remote target.");
1757 if (use_threadinfo_query
)
1759 putpkt ("qfThreadInfo");
1761 getpkt (bufp
, (rs
->remote_packet_size
), 0);
1762 if (bufp
[0] != '\0') /* q packet recognized */
1764 while (*bufp
++ == 'm') /* reply contains one or more TID */
1768 tid
= strtol (bufp
, &bufp
, 16);
1769 if (tid
!= 0 && !in_thread_list (pid_to_ptid (tid
)))
1770 add_thread (pid_to_ptid (tid
));
1772 while (*bufp
++ == ','); /* comma-separated list */
1773 putpkt ("qsThreadInfo");
1775 getpkt (bufp
, (rs
->remote_packet_size
), 0);
1781 /* Else fall back to old method based on jmetzler protocol. */
1782 use_threadinfo_query
= 0;
1783 remote_find_new_threads ();
1788 * Collect a descriptive string about the given thread.
1789 * The target may say anything it wants to about the thread
1790 * (typically info about its blocked / runnable state, name, etc.).
1791 * This string will appear in the info threads display.
1793 * Optional: targets are not required to implement this function.
1797 remote_threads_extra_info (struct thread_info
*tp
)
1799 struct remote_state
*rs
= get_remote_state ();
1803 struct gdb_ext_thread_info threadinfo
;
1804 static char display_buf
[100]; /* arbitrary... */
1805 char *bufp
= alloca (rs
->remote_packet_size
);
1806 int n
= 0; /* position in display_buf */
1808 if (remote_desc
== 0) /* paranoia */
1809 internal_error (__FILE__
, __LINE__
,
1810 "remote_threads_extra_info");
1812 if (use_threadextra_query
)
1814 sprintf (bufp
, "qThreadExtraInfo,%x", PIDGET (tp
->ptid
));
1816 getpkt (bufp
, (rs
->remote_packet_size
), 0);
1819 n
= min (strlen (bufp
) / 2, sizeof (display_buf
));
1820 result
= hex2bin (bufp
, display_buf
, n
);
1821 display_buf
[result
] = '\0';
1826 /* If the above query fails, fall back to the old method. */
1827 use_threadextra_query
= 0;
1828 set
= TAG_THREADID
| TAG_EXISTS
| TAG_THREADNAME
1829 | TAG_MOREDISPLAY
| TAG_DISPLAY
;
1830 int_to_threadref (&id
, PIDGET (tp
->ptid
));
1831 if (remote_get_threadinfo (&id
, set
, &threadinfo
))
1832 if (threadinfo
.active
)
1834 if (*threadinfo
.shortname
)
1835 n
+= sprintf(&display_buf
[0], " Name: %s,", threadinfo
.shortname
);
1836 if (*threadinfo
.display
)
1837 n
+= sprintf(&display_buf
[n
], " State: %s,", threadinfo
.display
);
1838 if (*threadinfo
.more_display
)
1839 n
+= sprintf(&display_buf
[n
], " Priority: %s",
1840 threadinfo
.more_display
);
1844 /* for purely cosmetic reasons, clear up trailing commas */
1845 if (',' == display_buf
[n
-1])
1846 display_buf
[n
-1] = ' ';
1855 /* Restart the remote side; this is an extended protocol operation. */
1858 extended_remote_restart (void)
1860 struct remote_state
*rs
= get_remote_state ();
1861 char *buf
= alloca (rs
->remote_packet_size
);
1863 /* Send the restart command; for reasons I don't understand the
1864 remote side really expects a number after the "R". */
1866 sprintf (&buf
[1], "%x", 0);
1869 /* Now query for status so this looks just like we restarted
1870 gdbserver from scratch. */
1872 getpkt (buf
, (rs
->remote_packet_size
), 0);
1875 /* Clean up connection to a remote debugger. */
1878 remote_close (int quitting
)
1881 serial_close (remote_desc
);
1885 /* Query the remote side for the text, data and bss offsets. */
1890 struct remote_state
*rs
= get_remote_state ();
1891 char *buf
= alloca (rs
->remote_packet_size
);
1894 CORE_ADDR text_addr
, data_addr
, bss_addr
;
1895 struct section_offsets
*offs
;
1897 putpkt ("qOffsets");
1899 getpkt (buf
, (rs
->remote_packet_size
), 0);
1901 if (buf
[0] == '\000')
1902 return; /* Return silently. Stub doesn't support
1906 warning ("Remote failure reply: %s", buf
);
1910 /* Pick up each field in turn. This used to be done with scanf, but
1911 scanf will make trouble if CORE_ADDR size doesn't match
1912 conversion directives correctly. The following code will work
1913 with any size of CORE_ADDR. */
1914 text_addr
= data_addr
= bss_addr
= 0;
1918 if (strncmp (ptr
, "Text=", 5) == 0)
1921 /* Don't use strtol, could lose on big values. */
1922 while (*ptr
&& *ptr
!= ';')
1923 text_addr
= (text_addr
<< 4) + fromhex (*ptr
++);
1928 if (!lose
&& strncmp (ptr
, ";Data=", 6) == 0)
1931 while (*ptr
&& *ptr
!= ';')
1932 data_addr
= (data_addr
<< 4) + fromhex (*ptr
++);
1937 if (!lose
&& strncmp (ptr
, ";Bss=", 5) == 0)
1940 while (*ptr
&& *ptr
!= ';')
1941 bss_addr
= (bss_addr
<< 4) + fromhex (*ptr
++);
1947 error ("Malformed response to offset query, %s", buf
);
1949 if (symfile_objfile
== NULL
)
1952 offs
= ((struct section_offsets
*)
1953 alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
)));
1954 memcpy (offs
, symfile_objfile
->section_offsets
,
1955 SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
));
1957 offs
->offsets
[SECT_OFF_TEXT (symfile_objfile
)] = text_addr
;
1959 /* This is a temporary kludge to force data and bss to use the same offsets
1960 because that's what nlmconv does now. The real solution requires changes
1961 to the stub and remote.c that I don't have time to do right now. */
1963 offs
->offsets
[SECT_OFF_DATA (symfile_objfile
)] = data_addr
;
1964 offs
->offsets
[SECT_OFF_BSS (symfile_objfile
)] = data_addr
;
1966 objfile_relocate (symfile_objfile
, offs
);
1969 /* Stub for catch_errors. */
1972 remote_start_remote_dummy (struct ui_out
*uiout
, void *dummy
)
1974 start_remote (); /* Initialize gdb process mechanisms */
1975 /* NOTE: Return something >=0. A -ve value is reserved for
1976 catch_exceptions. */
1981 remote_start_remote (struct ui_out
*uiout
, void *dummy
)
1983 immediate_quit
++; /* Allow user to interrupt it */
1985 /* Ack any packet which the remote side has already sent. */
1986 serial_write (remote_desc
, "+", 1);
1988 /* Let the stub know that we want it to return the thread. */
1991 inferior_ptid
= remote_current_thread (inferior_ptid
);
1993 get_offsets (); /* Get text, data & bss offsets */
1995 putpkt ("?"); /* initiate a query from remote machine */
1998 /* NOTE: See comment above in remote_start_remote_dummy(). This
1999 function returns something >=0. */
2000 return remote_start_remote_dummy (uiout
, dummy
);
2003 /* Open a connection to a remote debugger.
2004 NAME is the filename used for communication. */
2007 remote_open (char *name
, int from_tty
)
2009 remote_open_1 (name
, from_tty
, &remote_ops
, 0, 0);
2012 /* Just like remote_open, but with asynchronous support. */
2014 remote_async_open (char *name
, int from_tty
)
2016 remote_open_1 (name
, from_tty
, &remote_async_ops
, 0, 1);
2019 /* Open a connection to a remote debugger using the extended
2020 remote gdb protocol. NAME is the filename used for communication. */
2023 extended_remote_open (char *name
, int from_tty
)
2025 remote_open_1 (name
, from_tty
, &extended_remote_ops
, 1 /*extended_p */,
2029 /* Just like extended_remote_open, but with asynchronous support. */
2031 extended_remote_async_open (char *name
, int from_tty
)
2033 remote_open_1 (name
, from_tty
, &extended_async_remote_ops
,
2034 1 /*extended_p */, 1 /* async_p */);
2037 /* Generic code for opening a connection to a remote target. */
2040 init_all_packet_configs (void)
2043 update_packet_config (&remote_protocol_P
);
2044 update_packet_config (&remote_protocol_qSymbol
);
2045 update_packet_config (&remote_protocol_vcont
);
2046 for (i
= 0; i
< NR_Z_PACKET_TYPES
; i
++)
2047 update_packet_config (&remote_protocol_Z
[i
]);
2048 /* Force remote_write_bytes to check whether target supports binary
2050 update_packet_config (&remote_protocol_binary_download
);
2051 update_packet_config (&remote_protocol_qPart_auxv
);
2054 /* Symbol look-up. */
2057 remote_check_symbols (struct objfile
*objfile
)
2059 struct remote_state
*rs
= get_remote_state ();
2060 char *msg
, *reply
, *tmp
;
2061 struct minimal_symbol
*sym
;
2064 if (remote_protocol_qSymbol
.support
== PACKET_DISABLE
)
2067 msg
= alloca (rs
->remote_packet_size
);
2068 reply
= alloca (rs
->remote_packet_size
);
2070 /* Invite target to request symbol lookups. */
2072 putpkt ("qSymbol::");
2073 getpkt (reply
, (rs
->remote_packet_size
), 0);
2074 packet_ok (reply
, &remote_protocol_qSymbol
);
2076 while (strncmp (reply
, "qSymbol:", 8) == 0)
2079 end
= hex2bin (tmp
, msg
, strlen (tmp
) / 2);
2081 sym
= lookup_minimal_symbol (msg
, NULL
, NULL
);
2083 sprintf (msg
, "qSymbol::%s", &reply
[8]);
2085 sprintf (msg
, "qSymbol:%s:%s",
2086 paddr_nz (SYMBOL_VALUE_ADDRESS (sym
)),
2089 getpkt (reply
, (rs
->remote_packet_size
), 0);
2093 static struct serial
*
2094 remote_serial_open (char *name
)
2096 static int udp_warning
= 0;
2098 /* FIXME: Parsing NAME here is a hack. But we want to warn here instead
2099 of in ser-tcp.c, because it is the remote protocol assuming that the
2100 serial connection is reliable and not the serial connection promising
2102 if (!udp_warning
&& strncmp (name
, "udp:", 4) == 0)
2104 warning ("The remote protocol may be unreliable over UDP.");
2105 warning ("Some events may be lost, rendering further debugging "
2110 return serial_open (name
);
2114 remote_open_1 (char *name
, int from_tty
, struct target_ops
*target
,
2115 int extended_p
, int async_p
)
2118 struct remote_state
*rs
= get_remote_state ();
2120 error ("To open a remote debug connection, you need to specify what\n"
2121 "serial device is attached to the remote system\n"
2122 "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).");
2124 /* See FIXME above */
2126 wait_forever_enabled_p
= 1;
2128 reopen_exec_file ();
2131 target_preopen (from_tty
);
2133 unpush_target (target
);
2135 remote_desc
= remote_serial_open (name
);
2137 perror_with_name (name
);
2139 if (baud_rate
!= -1)
2141 if (serial_setbaudrate (remote_desc
, baud_rate
))
2143 /* The requested speed could not be set. Error out to
2144 top level after closing remote_desc. Take care to
2145 set remote_desc to NULL to avoid closing remote_desc
2147 serial_close (remote_desc
);
2149 perror_with_name (name
);
2153 serial_raw (remote_desc
);
2155 /* If there is something sitting in the buffer we might take it as a
2156 response to a command, which would be bad. */
2157 serial_flush_input (remote_desc
);
2161 puts_filtered ("Remote debugging using ");
2162 puts_filtered (name
);
2163 puts_filtered ("\n");
2165 push_target (target
); /* Switch to using remote target now */
2167 init_all_packet_configs ();
2169 general_thread
= -2;
2170 continue_thread
= -2;
2172 /* Probe for ability to use "ThreadInfo" query, as required. */
2173 use_threadinfo_query
= 1;
2174 use_threadextra_query
= 1;
2176 /* Without this, some commands which require an active target (such
2177 as kill) won't work. This variable serves (at least) double duty
2178 as both the pid of the target process (if it has such), and as a
2179 flag indicating that a target is active. These functions should
2180 be split out into seperate variables, especially since GDB will
2181 someday have a notion of debugging several processes. */
2183 inferior_ptid
= pid_to_ptid (MAGIC_NULL_PID
);
2187 /* With this target we start out by owning the terminal. */
2188 remote_async_terminal_ours_p
= 1;
2190 /* FIXME: cagney/1999-09-23: During the initial connection it is
2191 assumed that the target is already ready and able to respond to
2192 requests. Unfortunately remote_start_remote() eventually calls
2193 wait_for_inferior() with no timeout. wait_forever_enabled_p gets
2194 around this. Eventually a mechanism that allows
2195 wait_for_inferior() to expect/get timeouts will be
2197 wait_forever_enabled_p
= 0;
2200 #ifdef SOLIB_CREATE_INFERIOR_HOOK
2201 /* First delete any symbols previously loaded from shared libraries. */
2202 no_shared_libraries (NULL
, 0);
2205 /* Start the remote connection. If error() or QUIT, discard this
2206 target (we'd otherwise be in an inconsistent state) and then
2207 propogate the error on up the exception chain. This ensures that
2208 the caller doesn't stumble along blindly assuming that the
2209 function succeeded. The CLI doesn't have this problem but other
2210 UI's, such as MI do.
2212 FIXME: cagney/2002-05-19: Instead of re-throwing the exception,
2213 this function should return an error indication letting the
2214 caller restore the previous state. Unfortunately the command
2215 ``target remote'' is directly wired to this function making that
2216 impossible. On a positive note, the CLI side of this problem has
2217 been fixed - the function set_cmd_context() makes it possible for
2218 all the ``target ....'' commands to share a common callback
2219 function. See cli-dump.c. */
2220 ex
= catch_exceptions (uiout
,
2221 remote_start_remote
, NULL
,
2222 "Couldn't establish connection to remote"
2229 wait_forever_enabled_p
= 1;
2230 throw_exception (ex
);
2234 wait_forever_enabled_p
= 1;
2238 /* Tell the remote that we are using the extended protocol. */
2239 char *buf
= alloca (rs
->remote_packet_size
);
2241 getpkt (buf
, (rs
->remote_packet_size
), 0);
2243 #ifdef SOLIB_CREATE_INFERIOR_HOOK
2244 /* FIXME: need a master target_open vector from which all
2245 remote_opens can be called, so that stuff like this can
2246 go there. Failing that, the following code must be copied
2247 to the open function for any remote target that wants to
2248 support svr4 shared libraries. */
2250 /* Set up to detect and load shared libraries. */
2251 if (exec_bfd
) /* No use without an exec file. */
2253 SOLIB_CREATE_INFERIOR_HOOK (PIDGET (inferior_ptid
));
2254 remote_check_symbols (symfile_objfile
);
2259 /* This takes a program previously attached to and detaches it. After
2260 this is done, GDB can be used to debug some other program. We
2261 better not have left any breakpoints in the target program or it'll
2262 die when it hits one. */
2265 remote_detach (char *args
, int from_tty
)
2267 struct remote_state
*rs
= get_remote_state ();
2268 char *buf
= alloca (rs
->remote_packet_size
);
2271 error ("Argument given to \"detach\" when remotely debugging.");
2273 /* Tell the remote target to detach. */
2275 remote_send (buf
, (rs
->remote_packet_size
));
2277 /* Unregister the file descriptor from the event loop. */
2278 if (target_is_async_p ())
2279 serial_async (remote_desc
, NULL
, 0);
2281 target_mourn_inferior ();
2283 puts_filtered ("Ending remote debugging.\n");
2286 /* Same as remote_detach, but don't send the "D" packet; just disconnect. */
2289 remote_disconnect (char *args
, int from_tty
)
2291 struct remote_state
*rs
= get_remote_state ();
2292 char *buf
= alloca (rs
->remote_packet_size
);
2295 error ("Argument given to \"detach\" when remotely debugging.");
2297 /* Unregister the file descriptor from the event loop. */
2298 if (target_is_async_p ())
2299 serial_async (remote_desc
, NULL
, 0);
2301 target_mourn_inferior ();
2303 puts_filtered ("Ending remote debugging.\n");
2306 /* Convert hex digit A to a number. */
2311 if (a
>= '0' && a
<= '9')
2313 else if (a
>= 'a' && a
<= 'f')
2314 return a
- 'a' + 10;
2315 else if (a
>= 'A' && a
<= 'F')
2316 return a
- 'A' + 10;
2318 error ("Reply contains invalid hex digit %d", a
);
2322 hex2bin (const char *hex
, char *bin
, int count
)
2326 for (i
= 0; i
< count
; i
++)
2328 if (hex
[0] == 0 || hex
[1] == 0)
2330 /* Hex string is short, or of uneven length.
2331 Return the count that has been converted so far. */
2334 *bin
++ = fromhex (hex
[0]) * 16 + fromhex (hex
[1]);
2340 /* Convert number NIB to a hex digit. */
2348 return 'a' + nib
- 10;
2352 bin2hex (const char *bin
, char *hex
, int count
)
2355 /* May use a length, or a nul-terminated string as input. */
2357 count
= strlen (bin
);
2359 for (i
= 0; i
< count
; i
++)
2361 *hex
++ = tohex ((*bin
>> 4) & 0xf);
2362 *hex
++ = tohex (*bin
++ & 0xf);
2368 /* Check for the availability of vCont. This function should also check
2372 remote_vcont_probe (struct remote_state
*rs
, char *buf
)
2374 strcpy (buf
, "vCont?");
2376 getpkt (buf
, rs
->remote_packet_size
, 0);
2378 /* Make sure that the features we assume are supported. */
2379 if (strncmp (buf
, "vCont", 5) == 0)
2382 int support_s
, support_S
, support_c
, support_C
;
2388 while (p
&& *p
== ';')
2391 if (*p
== 's' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
2393 else if (*p
== 'S' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
2395 else if (*p
== 'c' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
2397 else if (*p
== 'C' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
2400 p
= strchr (p
, ';');
2403 /* If s, S, c, and C are not all supported, we can't use vCont. Clearing
2404 BUF will make packet_ok disable the packet. */
2405 if (!support_s
|| !support_S
|| !support_c
|| !support_C
)
2409 packet_ok (buf
, &remote_protocol_vcont
);
2412 /* Resume the remote inferior by using a "vCont" packet. The thread
2413 to be resumed is PTID; STEP and SIGGNAL indicate whether the
2414 resumed thread should be single-stepped and/or signalled. If PTID's
2415 PID is -1, then all threads are resumed; the thread to be stepped and/or
2416 signalled is given in the global INFERIOR_PTID. This function returns
2417 non-zero iff it resumes the inferior.
2419 This function issues a strict subset of all possible vCont commands at the
2423 remote_vcont_resume (ptid_t ptid
, int step
, enum target_signal siggnal
)
2425 struct remote_state
*rs
= get_remote_state ();
2426 int pid
= PIDGET (ptid
);
2427 char *buf
= NULL
, *outbuf
;
2428 struct cleanup
*old_cleanup
;
2430 buf
= xmalloc (rs
->remote_packet_size
);
2431 old_cleanup
= make_cleanup (xfree
, buf
);
2433 if (remote_protocol_vcont
.support
== PACKET_SUPPORT_UNKNOWN
)
2434 remote_vcont_probe (rs
, buf
);
2436 if (remote_protocol_vcont
.support
== PACKET_DISABLE
)
2438 do_cleanups (old_cleanup
);
2442 /* If we could generate a wider range of packets, we'd have to worry
2443 about overflowing BUF. Should there be a generic
2444 "multi-part-packet" packet? */
2446 if (PIDGET (inferior_ptid
) == MAGIC_NULL_PID
)
2448 /* MAGIC_NULL_PTID means that we don't have any active threads, so we
2449 don't have any PID numbers the inferior will understand. Make sure
2450 to only send forms that do not specify a PID. */
2451 if (step
&& siggnal
!= TARGET_SIGNAL_0
)
2452 outbuf
= xstrprintf ("vCont;S%02x", siggnal
);
2454 outbuf
= xstrprintf ("vCont;s");
2455 else if (siggnal
!= TARGET_SIGNAL_0
)
2456 outbuf
= xstrprintf ("vCont;C%02x", siggnal
);
2458 outbuf
= xstrprintf ("vCont;c");
2462 /* Resume all threads, with preference for INFERIOR_PTID. */
2463 if (step
&& siggnal
!= TARGET_SIGNAL_0
)
2464 outbuf
= xstrprintf ("vCont;S%02x:%x;c", siggnal
,
2465 PIDGET (inferior_ptid
));
2467 outbuf
= xstrprintf ("vCont;s:%x;c", PIDGET (inferior_ptid
));
2468 else if (siggnal
!= TARGET_SIGNAL_0
)
2469 outbuf
= xstrprintf ("vCont;C%02x:%x;c", siggnal
,
2470 PIDGET (inferior_ptid
));
2472 outbuf
= xstrprintf ("vCont;c");
2476 /* Scheduler locking; resume only PTID. */
2477 if (step
&& siggnal
!= TARGET_SIGNAL_0
)
2478 outbuf
= xstrprintf ("vCont;S%02x:%x", siggnal
, pid
);
2480 outbuf
= xstrprintf ("vCont;s:%x", pid
);
2481 else if (siggnal
!= TARGET_SIGNAL_0
)
2482 outbuf
= xstrprintf ("vCont;C%02x:%x", siggnal
, pid
);
2484 outbuf
= xstrprintf ("vCont;c:%x", pid
);
2487 gdb_assert (outbuf
&& strlen (outbuf
) < rs
->remote_packet_size
);
2488 make_cleanup (xfree
, outbuf
);
2492 do_cleanups (old_cleanup
);
2497 /* Tell the remote machine to resume. */
2499 static enum target_signal last_sent_signal
= TARGET_SIGNAL_0
;
2501 static int last_sent_step
;
2504 remote_resume (ptid_t ptid
, int step
, enum target_signal siggnal
)
2506 struct remote_state
*rs
= get_remote_state ();
2507 char *buf
= alloca (rs
->remote_packet_size
);
2508 int pid
= PIDGET (ptid
);
2511 last_sent_signal
= siggnal
;
2512 last_sent_step
= step
;
2514 /* A hook for when we need to do something at the last moment before
2516 if (deprecated_target_resume_hook
)
2517 (*deprecated_target_resume_hook
) ();
2519 /* The vCont packet doesn't need to specify threads via Hc. */
2520 if (remote_vcont_resume (ptid
, step
, siggnal
))
2523 /* All other supported resume packets do use Hc, so call set_thread. */
2525 set_thread (0, 0); /* run any thread */
2527 set_thread (pid
, 0); /* run this thread */
2529 if (siggnal
!= TARGET_SIGNAL_0
)
2531 buf
[0] = step
? 'S' : 'C';
2532 buf
[1] = tohex (((int) siggnal
>> 4) & 0xf);
2533 buf
[2] = tohex (((int) siggnal
) & 0xf);
2537 strcpy (buf
, step
? "s" : "c");
2542 /* Same as remote_resume, but with async support. */
2544 remote_async_resume (ptid_t ptid
, int step
, enum target_signal siggnal
)
2546 remote_resume (ptid
, step
, siggnal
);
2548 /* We are about to start executing the inferior, let's register it
2549 with the event loop. NOTE: this is the one place where all the
2550 execution commands end up. We could alternatively do this in each
2551 of the execution commands in infcmd.c.*/
2552 /* FIXME: ezannoni 1999-09-28: We may need to move this out of here
2553 into infcmd.c in order to allow inferior function calls to work
2554 NOT asynchronously. */
2555 if (event_loop_p
&& target_can_async_p ())
2556 target_async (inferior_event_handler
, 0);
2557 /* Tell the world that the target is now executing. */
2558 /* FIXME: cagney/1999-09-23: Is it the targets responsibility to set
2559 this? Instead, should the client of target just assume (for
2560 async targets) that the target is going to start executing? Is
2561 this information already found in the continuation block? */
2562 if (target_is_async_p ())
2563 target_executing
= 1;
2567 /* Set up the signal handler for SIGINT, while the target is
2568 executing, ovewriting the 'regular' SIGINT signal handler. */
2570 initialize_sigint_signal_handler (void)
2572 sigint_remote_token
=
2573 create_async_signal_handler (async_remote_interrupt
, NULL
);
2574 signal (SIGINT
, handle_remote_sigint
);
2577 /* Signal handler for SIGINT, while the target is executing. */
2579 handle_remote_sigint (int sig
)
2581 signal (sig
, handle_remote_sigint_twice
);
2582 sigint_remote_twice_token
=
2583 create_async_signal_handler (async_remote_interrupt_twice
, NULL
);
2584 mark_async_signal_handler_wrapper (sigint_remote_token
);
2587 /* Signal handler for SIGINT, installed after SIGINT has already been
2588 sent once. It will take effect the second time that the user sends
2591 handle_remote_sigint_twice (int sig
)
2593 signal (sig
, handle_sigint
);
2594 sigint_remote_twice_token
=
2595 create_async_signal_handler (inferior_event_handler_wrapper
, NULL
);
2596 mark_async_signal_handler_wrapper (sigint_remote_twice_token
);
2599 /* Perform the real interruption of the target execution, in response
2602 async_remote_interrupt (gdb_client_data arg
)
2605 fprintf_unfiltered (gdb_stdlog
, "remote_interrupt called\n");
2610 /* Perform interrupt, if the first attempt did not succeed. Just give
2611 up on the target alltogether. */
2613 async_remote_interrupt_twice (gdb_client_data arg
)
2616 fprintf_unfiltered (gdb_stdlog
, "remote_interrupt_twice called\n");
2617 /* Do something only if the target was not killed by the previous
2619 if (target_executing
)
2622 signal (SIGINT
, handle_remote_sigint
);
2626 /* Reinstall the usual SIGINT handlers, after the target has
2629 cleanup_sigint_signal_handler (void *dummy
)
2631 signal (SIGINT
, handle_sigint
);
2632 if (sigint_remote_twice_token
)
2633 delete_async_signal_handler ((struct async_signal_handler
**) & sigint_remote_twice_token
);
2634 if (sigint_remote_token
)
2635 delete_async_signal_handler ((struct async_signal_handler
**) & sigint_remote_token
);
2638 /* Send ^C to target to halt it. Target will respond, and send us a
2640 static void (*ofunc
) (int);
2642 /* The command line interface's stop routine. This function is installed
2643 as a signal handler for SIGINT. The first time a user requests a
2644 stop, we call remote_stop to send a break or ^C. If there is no
2645 response from the target (it didn't stop when the user requested it),
2646 we ask the user if he'd like to detach from the target. */
2648 remote_interrupt (int signo
)
2650 /* If this doesn't work, try more severe steps. */
2651 signal (signo
, remote_interrupt_twice
);
2654 fprintf_unfiltered (gdb_stdlog
, "remote_interrupt called\n");
2659 /* The user typed ^C twice. */
2662 remote_interrupt_twice (int signo
)
2664 signal (signo
, ofunc
);
2666 signal (signo
, remote_interrupt
);
2669 /* This is the generic stop called via the target vector. When a target
2670 interrupt is requested, either by the command line or the GUI, we
2671 will eventually end up here. */
2675 /* Send a break or a ^C, depending on user preference. */
2677 fprintf_unfiltered (gdb_stdlog
, "remote_stop called\n");
2680 serial_send_break (remote_desc
);
2682 serial_write (remote_desc
, "\003", 1);
2685 /* Ask the user what to do when an interrupt is received. */
2688 interrupt_query (void)
2690 target_terminal_ours ();
2692 if (query ("Interrupted while waiting for the program.\n\
2693 Give up (and stop debugging it)? "))
2695 target_mourn_inferior ();
2696 throw_exception (RETURN_QUIT
);
2699 target_terminal_inferior ();
2702 /* Enable/disable target terminal ownership. Most targets can use
2703 terminal groups to control terminal ownership. Remote targets are
2704 different in that explicit transfer of ownership to/from GDB/target
2708 remote_async_terminal_inferior (void)
2710 /* FIXME: cagney/1999-09-27: Shouldn't need to test for
2711 sync_execution here. This function should only be called when
2712 GDB is resuming the inferior in the forground. A background
2713 resume (``run&'') should leave GDB in control of the terminal and
2714 consequently should not call this code. */
2715 if (!sync_execution
)
2717 /* FIXME: cagney/1999-09-27: Closely related to the above. Make
2718 calls target_terminal_*() idenpotent. The event-loop GDB talking
2719 to an asynchronous target with a synchronous command calls this
2720 function from both event-top.c and infrun.c/infcmd.c. Once GDB
2721 stops trying to transfer the terminal to the target when it
2722 shouldn't this guard can go away. */
2723 if (!remote_async_terminal_ours_p
)
2725 delete_file_handler (input_fd
);
2726 remote_async_terminal_ours_p
= 0;
2727 initialize_sigint_signal_handler ();
2728 /* NOTE: At this point we could also register our selves as the
2729 recipient of all input. Any characters typed could then be
2730 passed on down to the target. */
2734 remote_async_terminal_ours (void)
2736 /* See FIXME in remote_async_terminal_inferior. */
2737 if (!sync_execution
)
2739 /* See FIXME in remote_async_terminal_inferior. */
2740 if (remote_async_terminal_ours_p
)
2742 cleanup_sigint_signal_handler (NULL
);
2743 add_file_handler (input_fd
, stdin_event_handler
, 0);
2744 remote_async_terminal_ours_p
= 1;
2747 /* If nonzero, ignore the next kill. */
2752 remote_console_output (char *msg
)
2756 for (p
= msg
; p
[0] && p
[1]; p
+= 2)
2759 char c
= fromhex (p
[0]) * 16 + fromhex (p
[1]);
2762 fputs_unfiltered (tb
, gdb_stdtarg
);
2764 gdb_flush (gdb_stdtarg
);
2767 /* Wait until the remote machine stops, then return,
2768 storing status in STATUS just as `wait' would.
2769 Returns "pid", which in the case of a multi-threaded
2770 remote OS, is the thread-id. */
2773 remote_wait (ptid_t ptid
, struct target_waitstatus
*status
)
2775 struct remote_state
*rs
= get_remote_state ();
2776 unsigned char *buf
= alloca (rs
->remote_packet_size
);
2777 ULONGEST thread_num
= -1;
2780 status
->kind
= TARGET_WAITKIND_EXITED
;
2781 status
->value
.integer
= 0;
2787 ofunc
= signal (SIGINT
, remote_interrupt
);
2788 getpkt (buf
, (rs
->remote_packet_size
), 1);
2789 signal (SIGINT
, ofunc
);
2791 /* This is a hook for when we need to do something (perhaps the
2792 collection of trace data) every time the target stops. */
2793 if (deprecated_target_wait_loop_hook
)
2794 (*deprecated_target_wait_loop_hook
) ();
2796 remote_stopped_by_watchpoint_p
= 0;
2800 case 'E': /* Error of some sort */
2801 warning ("Remote failure reply: %s", buf
);
2803 case 'F': /* File-I/O request */
2804 remote_fileio_request (buf
);
2806 case 'T': /* Status with PC, SP, FP, ... */
2809 char regs
[MAX_REGISTER_SIZE
];
2811 /* Expedited reply, containing Signal, {regno, reg} repeat */
2812 /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where
2814 n... = register number
2815 r... = register contents
2817 p
= &buf
[3]; /* after Txx */
2826 /* If the packet contains a register number save it in pnum
2827 and set p1 to point to the character following it.
2828 Otherwise p1 points to p. */
2830 /* If this packet is an awatch packet, don't parse the 'a'
2831 as a register number. */
2833 if (strncmp (p
, "awatch", strlen("awatch")) != 0)
2835 /* Read the ``P'' register number. */
2836 pnum
= strtol (p
, &p_temp
, 16);
2837 p1
= (unsigned char *) p_temp
;
2842 if (p1
== p
) /* No register number present here */
2844 p1
= (unsigned char *) strchr (p
, ':');
2846 warning ("Malformed packet(a) (missing colon): %s\n\
2849 if (strncmp (p
, "thread", p1
- p
) == 0)
2851 p_temp
= unpack_varlen_hex (++p1
, &thread_num
);
2852 record_currthread (thread_num
);
2853 p
= (unsigned char *) p_temp
;
2855 else if ((strncmp (p
, "watch", p1
- p
) == 0)
2856 || (strncmp (p
, "rwatch", p1
- p
) == 0)
2857 || (strncmp (p
, "awatch", p1
- p
) == 0))
2859 remote_stopped_by_watchpoint_p
= 1;
2860 p
= unpack_varlen_hex (++p1
, &addr
);
2861 remote_watch_data_address
= (CORE_ADDR
)addr
;
2865 /* Silently skip unknown optional info. */
2866 p_temp
= strchr (p1
+ 1, ';');
2868 p
= (unsigned char *) p_temp
;
2873 struct packet_reg
*reg
= packet_reg_from_pnum (rs
, pnum
);
2877 error ("Malformed packet(b) (missing colon): %s\nPacket: '%s'\n",
2881 error ("Remote sent bad register number %s: %s\nPacket: '%s'\n",
2882 phex_nz (pnum
, 0), p
, buf
);
2884 fieldsize
= hex2bin (p
, regs
, register_size (current_gdbarch
, reg
->regnum
));
2886 if (fieldsize
< register_size (current_gdbarch
, reg
->regnum
))
2887 warning ("Remote reply is too short: %s", buf
);
2888 regcache_raw_supply (current_regcache
, reg
->regnum
, regs
);
2892 error ("Remote register badly formatted: %s\nhere: %s", buf
, p
);
2896 case 'S': /* Old style status, just signal only */
2897 status
->kind
= TARGET_WAITKIND_STOPPED
;
2898 status
->value
.sig
= (enum target_signal
)
2899 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
2903 thread_num
= strtol ((const char *) &buf
[4], NULL
, 16);
2904 record_currthread (thread_num
);
2907 case 'W': /* Target exited */
2909 /* The remote process exited. */
2910 status
->kind
= TARGET_WAITKIND_EXITED
;
2911 status
->value
.integer
= (fromhex (buf
[1]) << 4) + fromhex (buf
[2]);
2915 status
->kind
= TARGET_WAITKIND_SIGNALLED
;
2916 status
->value
.sig
= (enum target_signal
)
2917 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
2921 case 'O': /* Console output */
2922 remote_console_output (buf
+ 1);
2925 if (last_sent_signal
!= TARGET_SIGNAL_0
)
2927 /* Zero length reply means that we tried 'S' or 'C' and
2928 the remote system doesn't support it. */
2929 target_terminal_ours_for_output ();
2931 ("Can't send signals to this remote system. %s not sent.\n",
2932 target_signal_to_name (last_sent_signal
));
2933 last_sent_signal
= TARGET_SIGNAL_0
;
2934 target_terminal_inferior ();
2936 strcpy ((char *) buf
, last_sent_step
? "s" : "c");
2937 putpkt ((char *) buf
);
2940 /* else fallthrough */
2942 warning ("Invalid remote reply: %s", buf
);
2947 if (thread_num
!= -1)
2949 return pid_to_ptid (thread_num
);
2951 return inferior_ptid
;
2954 /* Async version of remote_wait. */
2956 remote_async_wait (ptid_t ptid
, struct target_waitstatus
*status
)
2958 struct remote_state
*rs
= get_remote_state ();
2959 unsigned char *buf
= alloca (rs
->remote_packet_size
);
2960 ULONGEST thread_num
= -1;
2963 status
->kind
= TARGET_WAITKIND_EXITED
;
2964 status
->value
.integer
= 0;
2966 remote_stopped_by_watchpoint_p
= 0;
2972 if (!target_is_async_p ())
2973 ofunc
= signal (SIGINT
, remote_interrupt
);
2974 /* FIXME: cagney/1999-09-27: If we're in async mode we should
2975 _never_ wait for ever -> test on target_is_async_p().
2976 However, before we do that we need to ensure that the caller
2977 knows how to take the target into/out of async mode. */
2978 getpkt (buf
, (rs
->remote_packet_size
), wait_forever_enabled_p
);
2979 if (!target_is_async_p ())
2980 signal (SIGINT
, ofunc
);
2982 /* This is a hook for when we need to do something (perhaps the
2983 collection of trace data) every time the target stops. */
2984 if (deprecated_target_wait_loop_hook
)
2985 (*deprecated_target_wait_loop_hook
) ();
2989 case 'E': /* Error of some sort */
2990 warning ("Remote failure reply: %s", buf
);
2992 case 'F': /* File-I/O request */
2993 remote_fileio_request (buf
);
2995 case 'T': /* Status with PC, SP, FP, ... */
2998 char regs
[MAX_REGISTER_SIZE
];
3000 /* Expedited reply, containing Signal, {regno, reg} repeat */
3001 /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where
3003 n... = register number
3004 r... = register contents
3006 p
= &buf
[3]; /* after Txx */
3015 /* If the packet contains a register number, save it in pnum
3016 and set p1 to point to the character following it.
3017 Otherwise p1 points to p. */
3019 /* If this packet is an awatch packet, don't parse the 'a'
3020 as a register number. */
3022 if (!strncmp (p
, "awatch", strlen ("awatch")) != 0)
3024 /* Read the register number. */
3025 pnum
= strtol (p
, &p_temp
, 16);
3026 p1
= (unsigned char *) p_temp
;
3031 if (p1
== p
) /* No register number present here */
3033 p1
= (unsigned char *) strchr (p
, ':');
3035 error ("Malformed packet(a) (missing colon): %s\nPacket: '%s'\n",
3037 if (strncmp (p
, "thread", p1
- p
) == 0)
3039 p_temp
= unpack_varlen_hex (++p1
, &thread_num
);
3040 record_currthread (thread_num
);
3041 p
= (unsigned char *) p_temp
;
3043 else if ((strncmp (p
, "watch", p1
- p
) == 0)
3044 || (strncmp (p
, "rwatch", p1
- p
) == 0)
3045 || (strncmp (p
, "awatch", p1
- p
) == 0))
3047 remote_stopped_by_watchpoint_p
= 1;
3048 p
= unpack_varlen_hex (++p1
, &addr
);
3049 remote_watch_data_address
= (CORE_ADDR
)addr
;
3053 /* Silently skip unknown optional info. */
3054 p_temp
= (unsigned char *) strchr (p1
+ 1, ';');
3062 struct packet_reg
*reg
= packet_reg_from_pnum (rs
, pnum
);
3065 error ("Malformed packet(b) (missing colon): %s\nPacket: '%s'\n",
3069 error ("Remote sent bad register number %ld: %s\nPacket: '%s'\n",
3072 fieldsize
= hex2bin (p
, regs
, register_size (current_gdbarch
, reg
->regnum
));
3074 if (fieldsize
< register_size (current_gdbarch
, reg
->regnum
))
3075 warning ("Remote reply is too short: %s", buf
);
3076 regcache_raw_supply (current_regcache
, reg
->regnum
, regs
);
3080 error ("Remote register badly formatted: %s\nhere: %s",
3085 case 'S': /* Old style status, just signal only */
3086 status
->kind
= TARGET_WAITKIND_STOPPED
;
3087 status
->value
.sig
= (enum target_signal
)
3088 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
3092 thread_num
= strtol ((const char *) &buf
[4], NULL
, 16);
3093 record_currthread (thread_num
);
3096 case 'W': /* Target exited */
3098 /* The remote process exited. */
3099 status
->kind
= TARGET_WAITKIND_EXITED
;
3100 status
->value
.integer
= (fromhex (buf
[1]) << 4) + fromhex (buf
[2]);
3104 status
->kind
= TARGET_WAITKIND_SIGNALLED
;
3105 status
->value
.sig
= (enum target_signal
)
3106 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
3110 case 'O': /* Console output */
3111 remote_console_output (buf
+ 1);
3112 /* Return immediately to the event loop. The event loop will
3113 still be waiting on the inferior afterwards. */
3114 status
->kind
= TARGET_WAITKIND_IGNORE
;
3117 if (last_sent_signal
!= TARGET_SIGNAL_0
)
3119 /* Zero length reply means that we tried 'S' or 'C' and
3120 the remote system doesn't support it. */
3121 target_terminal_ours_for_output ();
3123 ("Can't send signals to this remote system. %s not sent.\n",
3124 target_signal_to_name (last_sent_signal
));
3125 last_sent_signal
= TARGET_SIGNAL_0
;
3126 target_terminal_inferior ();
3128 strcpy ((char *) buf
, last_sent_step
? "s" : "c");
3129 putpkt ((char *) buf
);
3132 /* else fallthrough */
3134 warning ("Invalid remote reply: %s", buf
);
3139 if (thread_num
!= -1)
3141 return pid_to_ptid (thread_num
);
3143 return inferior_ptid
;
3146 /* Number of bytes of registers this stub implements. */
3148 static int register_bytes_found
;
3150 /* Read the remote registers into the block REGS. */
3151 /* Currently we just read all the registers, so we don't use regnum. */
3154 remote_fetch_registers (int regnum
)
3156 struct remote_state
*rs
= get_remote_state ();
3157 char *buf
= alloca (rs
->remote_packet_size
);
3160 char *regs
= alloca (rs
->sizeof_g_packet
);
3162 set_thread (PIDGET (inferior_ptid
), 1);
3166 struct packet_reg
*reg
= packet_reg_from_regnum (rs
, regnum
);
3167 gdb_assert (reg
!= NULL
);
3168 if (!reg
->in_g_packet
)
3169 internal_error (__FILE__
, __LINE__
,
3170 "Attempt to fetch a non G-packet register when this "
3171 "remote.c does not support the p-packet.");
3175 remote_send (buf
, (rs
->remote_packet_size
));
3177 /* Save the size of the packet sent to us by the target. Its used
3178 as a heuristic when determining the max size of packets that the
3179 target can safely receive. */
3180 if ((rs
->actual_register_packet_size
) == 0)
3181 (rs
->actual_register_packet_size
) = strlen (buf
);
3183 /* Unimplemented registers read as all bits zero. */
3184 memset (regs
, 0, rs
->sizeof_g_packet
);
3186 /* We can get out of synch in various cases. If the first character
3187 in the buffer is not a hex character, assume that has happened
3188 and try to fetch another packet to read. */
3189 while ((buf
[0] < '0' || buf
[0] > '9')
3190 && (buf
[0] < 'a' || buf
[0] > 'f')
3191 && buf
[0] != 'x') /* New: unavailable register value */
3194 fprintf_unfiltered (gdb_stdlog
,
3195 "Bad register packet; fetching a new packet\n");
3196 getpkt (buf
, (rs
->remote_packet_size
), 0);
3199 /* Reply describes registers byte by byte, each byte encoded as two
3200 hex characters. Suck them all up, then supply them to the
3201 register cacheing/storage mechanism. */
3204 for (i
= 0; i
< rs
->sizeof_g_packet
; i
++)
3210 warning ("Remote reply is of odd length: %s", buf
);
3211 /* Don't change register_bytes_found in this case, and don't
3212 print a second warning. */
3215 if (p
[0] == 'x' && p
[1] == 'x')
3216 regs
[i
] = 0; /* 'x' */
3218 regs
[i
] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
3222 if (i
!= register_bytes_found
)
3224 register_bytes_found
= i
;
3225 if (REGISTER_BYTES_OK_P ()
3226 && !REGISTER_BYTES_OK (i
))
3227 warning ("Remote reply is too short: %s", buf
);
3233 for (i
= 0; i
< NUM_REGS
+ NUM_PSEUDO_REGS
; i
++)
3235 struct packet_reg
*r
= &rs
->regs
[i
];
3238 if (r
->offset
* 2 >= strlen (buf
))
3239 /* A short packet that didn't include the register's
3240 value, this implies that the register is zero (and
3241 not that the register is unavailable). Supply that
3243 regcache_raw_supply (current_regcache
, r
->regnum
, NULL
);
3244 else if (buf
[r
->offset
* 2] == 'x')
3246 gdb_assert (r
->offset
* 2 < strlen (buf
));
3247 /* The register isn't available, mark it as such (at
3248 the same time setting the value to zero). */
3249 regcache_raw_supply (current_regcache
, r
->regnum
, NULL
);
3250 set_register_cached (i
, -1);
3253 regcache_raw_supply (current_regcache
, r
->regnum
,
3260 /* Prepare to store registers. Since we may send them all (using a
3261 'G' request), we have to read out the ones we don't want to change
3265 remote_prepare_to_store (void)
3267 struct remote_state
*rs
= get_remote_state ();
3269 char buf
[MAX_REGISTER_SIZE
];
3271 /* Make sure the entire registers array is valid. */
3272 switch (remote_protocol_P
.support
)
3274 case PACKET_DISABLE
:
3275 case PACKET_SUPPORT_UNKNOWN
:
3276 /* Make sure all the necessary registers are cached. */
3277 for (i
= 0; i
< NUM_REGS
; i
++)
3278 if (rs
->regs
[i
].in_g_packet
)
3279 regcache_raw_read (current_regcache
, rs
->regs
[i
].regnum
, buf
);
3286 /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF
3287 packet was not recognized. */
3290 store_register_using_P (int regnum
)
3292 struct remote_state
*rs
= get_remote_state ();
3293 struct packet_reg
*reg
= packet_reg_from_regnum (rs
, regnum
);
3294 /* Try storing a single register. */
3295 char *buf
= alloca (rs
->remote_packet_size
);
3296 char regp
[MAX_REGISTER_SIZE
];
3300 sprintf (buf
, "P%s=", phex_nz (reg
->pnum
, 0));
3301 p
= buf
+ strlen (buf
);
3302 regcache_raw_collect (current_regcache
, reg
->regnum
, regp
);
3303 bin2hex (regp
, p
, register_size (current_gdbarch
, reg
->regnum
));
3304 remote_send (buf
, rs
->remote_packet_size
);
3306 return buf
[0] != '\0';
3310 /* Store register REGNUM, or all registers if REGNUM == -1, from the contents
3311 of the register cache buffer. FIXME: ignores errors. */
3314 remote_store_registers (int regnum
)
3316 struct remote_state
*rs
= get_remote_state ();
3322 set_thread (PIDGET (inferior_ptid
), 1);
3326 switch (remote_protocol_P
.support
)
3328 case PACKET_DISABLE
:
3331 if (store_register_using_P (regnum
))
3334 error ("Protocol error: P packet not recognized by stub");
3335 case PACKET_SUPPORT_UNKNOWN
:
3336 if (store_register_using_P (regnum
))
3338 /* The stub recognized the 'P' packet. Remember this. */
3339 remote_protocol_P
.support
= PACKET_ENABLE
;
3344 /* The stub does not support the 'P' packet. Use 'G'
3345 instead, and don't try using 'P' in the future (it
3346 will just waste our time). */
3347 remote_protocol_P
.support
= PACKET_DISABLE
;
3353 /* Extract all the registers in the regcache copying them into a
3357 regs
= alloca (rs
->sizeof_g_packet
);
3358 memset (regs
, rs
->sizeof_g_packet
, 0);
3359 for (i
= 0; i
< NUM_REGS
+ NUM_PSEUDO_REGS
; i
++)
3361 struct packet_reg
*r
= &rs
->regs
[i
];
3363 regcache_raw_collect (current_regcache
, r
->regnum
, regs
+ r
->offset
);
3367 /* Command describes registers byte by byte,
3368 each byte encoded as two hex characters. */
3369 buf
= alloca (rs
->remote_packet_size
);
3372 /* remote_prepare_to_store insures that register_bytes_found gets set. */
3373 bin2hex (regs
, p
, register_bytes_found
);
3374 remote_send (buf
, (rs
->remote_packet_size
));
3378 /* Return the number of hex digits in num. */
3381 hexnumlen (ULONGEST num
)
3385 for (i
= 0; num
!= 0; i
++)
3391 /* Set BUF to the minimum number of hex digits representing NUM. */
3394 hexnumstr (char *buf
, ULONGEST num
)
3396 int len
= hexnumlen (num
);
3397 return hexnumnstr (buf
, num
, len
);
3401 /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */
3404 hexnumnstr (char *buf
, ULONGEST num
, int width
)
3410 for (i
= width
- 1; i
>= 0; i
--)
3412 buf
[i
] = "0123456789abcdef"[(num
& 0xf)];
3419 /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */
3422 remote_address_masked (CORE_ADDR addr
)
3424 if (remote_address_size
> 0
3425 && remote_address_size
< (sizeof (ULONGEST
) * 8))
3427 /* Only create a mask when that mask can safely be constructed
3428 in a ULONGEST variable. */
3430 mask
= (mask
<< remote_address_size
) - 1;
3436 /* Determine whether the remote target supports binary downloading.
3437 This is accomplished by sending a no-op memory write of zero length
3438 to the target at the specified address. It does not suffice to send
3439 the whole packet, since many stubs strip the eighth bit and subsequently
3440 compute a wrong checksum, which causes real havoc with remote_write_bytes.
3442 NOTE: This can still lose if the serial line is not eight-bit
3443 clean. In cases like this, the user should clear "remote
3447 check_binary_download (CORE_ADDR addr
)
3449 struct remote_state
*rs
= get_remote_state ();
3450 switch (remote_protocol_binary_download
.support
)
3452 case PACKET_DISABLE
:
3456 case PACKET_SUPPORT_UNKNOWN
:
3458 char *buf
= alloca (rs
->remote_packet_size
);
3463 p
+= hexnumstr (p
, (ULONGEST
) addr
);
3465 p
+= hexnumstr (p
, (ULONGEST
) 0);
3469 putpkt_binary (buf
, (int) (p
- buf
));
3470 getpkt (buf
, (rs
->remote_packet_size
), 0);
3475 fprintf_unfiltered (gdb_stdlog
,
3476 "binary downloading NOT suppported by target\n");
3477 remote_protocol_binary_download
.support
= PACKET_DISABLE
;
3482 fprintf_unfiltered (gdb_stdlog
,
3483 "binary downloading suppported by target\n");
3484 remote_protocol_binary_download
.support
= PACKET_ENABLE
;
3491 /* Write memory data directly to the remote machine.
3492 This does not inform the data cache; the data cache uses this.
3493 MEMADDR is the address in the remote memory space.
3494 MYADDR is the address of the buffer in our space.
3495 LEN is the number of bytes.
3497 Returns number of bytes transferred, or 0 (setting errno) for
3498 error. Only transfer a single packet. */
3501 remote_write_bytes (CORE_ADDR memaddr
, char *myaddr
, int len
)
3505 unsigned char *plen
;
3511 unsigned char *payload_start
;
3513 /* Verify that the target can support a binary download. */
3514 check_binary_download (memaddr
);
3516 /* Compute the size, and then allocate space for the largest
3517 possible packet. Include space for an extra trailing NUL. */
3518 sizeof_buf
= get_memory_write_packet_size () + 1;
3519 buf
= alloca (sizeof_buf
);
3521 /* Compute the size of the actual payload by subtracting out the
3522 packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */
3523 payload_size
= (get_memory_write_packet_size () - (strlen ("$M,:#NN")
3524 + hexnumlen (memaddr
)
3525 + hexnumlen (len
)));
3527 /* Construct the packet header: "[MX]<memaddr>,<len>:". */
3529 /* Append "[XM]". Compute a best guess of the number of bytes
3530 actually transfered. */
3532 switch (remote_protocol_binary_download
.support
)
3536 /* Best guess at number of bytes that will fit. */
3537 todo
= min (len
, payload_size
);
3539 case PACKET_DISABLE
:
3541 /* num bytes that will fit */
3542 todo
= min (len
, payload_size
/ 2);
3544 case PACKET_SUPPORT_UNKNOWN
:
3545 internal_error (__FILE__
, __LINE__
,
3546 "remote_write_bytes: bad internal state");
3548 internal_error (__FILE__
, __LINE__
, "bad switch");
3551 /* Append "<memaddr>". */
3552 memaddr
= remote_address_masked (memaddr
);
3553 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
3558 /* Append <len>. Retain the location/size of <len>. It may need to
3559 be adjusted once the packet body has been created. */
3561 plenlen
= hexnumstr (p
, (ULONGEST
) todo
);
3568 /* Append the packet body. */
3570 switch (remote_protocol_binary_download
.support
)
3573 /* Binary mode. Send target system values byte by byte, in
3574 increasing byte addresses. Only escape certain critical
3577 (nr_bytes
< todo
) && (p
- payload_start
) < payload_size
;
3580 switch (myaddr
[nr_bytes
] & 0xff)
3585 /* These must be escaped */
3587 *p
++ = (myaddr
[nr_bytes
] & 0xff) ^ 0x20;
3590 *p
++ = myaddr
[nr_bytes
] & 0xff;
3594 if (nr_bytes
< todo
)
3596 /* Escape chars have filled up the buffer prematurely,
3597 and we have actually sent fewer bytes than planned.
3598 Fix-up the length field of the packet. Use the same
3599 number of characters as before. */
3600 plen
+= hexnumnstr (plen
, (ULONGEST
) nr_bytes
, plenlen
);
3601 *plen
= ':'; /* overwrite \0 from hexnumnstr() */
3604 case PACKET_DISABLE
:
3605 /* Normal mode: Send target system values byte by byte, in
3606 increasing byte addresses. Each byte is encoded as a two hex
3608 nr_bytes
= bin2hex (myaddr
, p
, todo
);
3611 case PACKET_SUPPORT_UNKNOWN
:
3612 internal_error (__FILE__
, __LINE__
,
3613 "remote_write_bytes: bad internal state");
3615 internal_error (__FILE__
, __LINE__
, "bad switch");
3618 putpkt_binary (buf
, (int) (p
- buf
));
3619 getpkt (buf
, sizeof_buf
, 0);
3623 /* There is no correspondance between what the remote protocol
3624 uses for errors and errno codes. We would like a cleaner way
3625 of representing errors (big enough to include errno codes,
3626 bfd_error codes, and others). But for now just return EIO. */
3631 /* Return NR_BYTES, not TODO, in case escape chars caused us to send fewer
3632 bytes than we'd planned. */
3636 /* Read memory data directly from the remote machine.
3637 This does not use the data cache; the data cache uses this.
3638 MEMADDR is the address in the remote memory space.
3639 MYADDR is the address of the buffer in our space.
3640 LEN is the number of bytes.
3642 Returns number of bytes transferred, or 0 for error. */
3644 /* NOTE: cagney/1999-10-18: This function (and its siblings in other
3645 remote targets) shouldn't attempt to read the entire buffer.
3646 Instead it should read a single packet worth of data and then
3647 return the byte size of that packet to the caller. The caller (its
3648 caller and its callers caller ;-) already contains code for
3649 handling partial reads. */
3652 remote_read_bytes (CORE_ADDR memaddr
, char *myaddr
, int len
)
3655 int max_buf_size
; /* Max size of packet output buffer */
3659 /* Create a buffer big enough for this packet. */
3660 max_buf_size
= get_memory_read_packet_size ();
3661 sizeof_buf
= max_buf_size
+ 1; /* Space for trailing NUL */
3662 buf
= alloca (sizeof_buf
);
3671 todo
= min (len
, max_buf_size
/ 2); /* num bytes that will fit */
3673 /* construct "m"<memaddr>","<len>" */
3674 /* sprintf (buf, "m%lx,%x", (unsigned long) memaddr, todo); */
3675 memaddr
= remote_address_masked (memaddr
);
3678 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
3680 p
+= hexnumstr (p
, (ULONGEST
) todo
);
3684 getpkt (buf
, sizeof_buf
, 0);
3687 && isxdigit (buf
[1]) && isxdigit (buf
[2])
3690 /* There is no correspondance between what the remote protocol uses
3691 for errors and errno codes. We would like a cleaner way of
3692 representing errors (big enough to include errno codes, bfd_error
3693 codes, and others). But for now just return EIO. */
3698 /* Reply describes memory byte by byte,
3699 each byte encoded as two hex characters. */
3702 if ((i
= hex2bin (p
, myaddr
, todo
)) < todo
)
3704 /* Reply is short. This means that we were able to read
3705 only part of what we wanted to. */
3706 return i
+ (origlen
- len
);
3715 /* Read or write LEN bytes from inferior memory at MEMADDR,
3716 transferring to or from debugger address BUFFER. Write to inferior if
3717 SHOULD_WRITE is nonzero. Returns length of data written or read; 0
3718 for error. TARGET is unused. */
3721 remote_xfer_memory (CORE_ADDR mem_addr
, char *buffer
, int mem_len
,
3722 int should_write
, struct mem_attrib
*attrib
,
3723 struct target_ops
*target
)
3725 CORE_ADDR targ_addr
;
3729 /* Should this be the selected frame? */
3730 gdbarch_remote_translate_xfer_address (current_gdbarch
, current_regcache
,
3732 &targ_addr
, &targ_len
);
3737 res
= remote_write_bytes (targ_addr
, buffer
, targ_len
);
3739 res
= remote_read_bytes (targ_addr
, buffer
, targ_len
);
3745 remote_files_info (struct target_ops
*ignore
)
3747 puts_filtered ("Debugging a target over a serial line.\n");
3750 /* Stuff for dealing with the packets which are part of this protocol.
3751 See comment at top of file for details. */
3753 /* Read a single character from the remote end, masking it down to 7 bits. */
3756 readchar (int timeout
)
3760 ch
= serial_readchar (remote_desc
, timeout
);
3765 switch ((enum serial_rc
) ch
)
3768 target_mourn_inferior ();
3769 error ("Remote connection closed");
3772 perror_with_name ("Remote communication error");
3774 case SERIAL_TIMEOUT
:
3780 /* Send the command in BUF to the remote machine, and read the reply
3781 into BUF. Report an error if we get an error reply. */
3784 remote_send (char *buf
,
3788 getpkt (buf
, sizeof_buf
, 0);
3791 error ("Remote failure reply: %s", buf
);
3794 /* Display a null-terminated packet on stdout, for debugging, using C
3798 print_packet (char *buf
)
3800 puts_filtered ("\"");
3801 fputstr_filtered (buf
, '"', gdb_stdout
);
3802 puts_filtered ("\"");
3808 return putpkt_binary (buf
, strlen (buf
));
3811 /* Send a packet to the remote machine, with error checking. The data
3812 of the packet is in BUF. The string in BUF can be at most (rs->remote_packet_size) - 5
3813 to account for the $, # and checksum, and for a possible /0 if we are
3814 debugging (remote_debug) and want to print the sent packet as a string */
3817 putpkt_binary (char *buf
, int cnt
)
3819 struct remote_state
*rs
= get_remote_state ();
3821 unsigned char csum
= 0;
3822 char *buf2
= alloca (cnt
+ 6);
3823 long sizeof_junkbuf
= (rs
->remote_packet_size
);
3824 char *junkbuf
= alloca (sizeof_junkbuf
);
3830 /* Copy the packet into buffer BUF2, encapsulating it
3831 and giving it a checksum. */
3836 for (i
= 0; i
< cnt
; i
++)
3842 *p
++ = tohex ((csum
>> 4) & 0xf);
3843 *p
++ = tohex (csum
& 0xf);
3845 /* Send it over and over until we get a positive ack. */
3849 int started_error_output
= 0;
3854 fprintf_unfiltered (gdb_stdlog
, "Sending packet: ");
3855 fputstrn_unfiltered (buf2
, p
- buf2
, 0, gdb_stdlog
);
3856 fprintf_unfiltered (gdb_stdlog
, "...");
3857 gdb_flush (gdb_stdlog
);
3859 if (serial_write (remote_desc
, buf2
, p
- buf2
))
3860 perror_with_name ("putpkt: write failed");
3862 /* read until either a timeout occurs (-2) or '+' is read */
3865 ch
= readchar (remote_timeout
);
3873 case SERIAL_TIMEOUT
:
3875 if (started_error_output
)
3877 putchar_unfiltered ('\n');
3878 started_error_output
= 0;
3887 fprintf_unfiltered (gdb_stdlog
, "Ack\n");
3891 fprintf_unfiltered (gdb_stdlog
, "Nak\n");
3892 case SERIAL_TIMEOUT
:
3896 break; /* Retransmit buffer */
3900 fprintf_unfiltered (gdb_stdlog
, "Packet instead of Ack, ignoring it\n");
3901 /* It's probably an old response, and we're out of sync.
3902 Just gobble up the packet and ignore it. */
3903 read_frame (junkbuf
, sizeof_junkbuf
);
3904 continue; /* Now, go look for + */
3909 if (!started_error_output
)
3911 started_error_output
= 1;
3912 fprintf_unfiltered (gdb_stdlog
, "putpkt: Junk: ");
3914 fputc_unfiltered (ch
& 0177, gdb_stdlog
);
3918 break; /* Here to retransmit */
3922 /* This is wrong. If doing a long backtrace, the user should be
3923 able to get out next time we call QUIT, without anything as
3924 violent as interrupt_query. If we want to provide a way out of
3925 here without getting to the next QUIT, it should be based on
3926 hitting ^C twice as in remote_wait. */
3936 /* Come here after finding the start of the frame. Collect the rest
3937 into BUF, verifying the checksum, length, and handling run-length
3938 compression. No more than sizeof_buf-1 characters are read so that
3939 the buffer can be NUL terminated.
3941 Returns -1 on error, number of characters in buffer (ignoring the
3942 trailing NULL) on success. (could be extended to return one of the
3943 SERIAL status indications). */
3946 read_frame (char *buf
,
3958 /* ASSERT (bc < sizeof_buf - 1) - space for trailing NUL */
3959 c
= readchar (remote_timeout
);
3962 case SERIAL_TIMEOUT
:
3964 fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog
);
3968 fputs_filtered ("Saw new packet start in middle of old one\n",
3970 return -1; /* Start a new packet, count retries */
3973 unsigned char pktcsum
;
3979 check_0
= readchar (remote_timeout
);
3981 check_1
= readchar (remote_timeout
);
3983 if (check_0
== SERIAL_TIMEOUT
|| check_1
== SERIAL_TIMEOUT
)
3986 fputs_filtered ("Timeout in checksum, retrying\n", gdb_stdlog
);
3989 else if (check_0
< 0 || check_1
< 0)
3992 fputs_filtered ("Communication error in checksum\n", gdb_stdlog
);
3996 pktcsum
= (fromhex (check_0
) << 4) | fromhex (check_1
);
3997 if (csum
== pktcsum
)
4002 fprintf_filtered (gdb_stdlog
,
4003 "Bad checksum, sentsum=0x%x, csum=0x%x, buf=",
4005 fputs_filtered (buf
, gdb_stdlog
);
4006 fputs_filtered ("\n", gdb_stdlog
);
4008 /* Number of characters in buffer ignoring trailing
4012 case '*': /* Run length encoding */
4017 c
= readchar (remote_timeout
);
4019 repeat
= c
- ' ' + 3; /* Compute repeat count */
4021 /* The character before ``*'' is repeated. */
4023 if (repeat
> 0 && repeat
<= 255
4025 && bc
+ repeat
- 1 < sizeof_buf
- 1)
4027 memset (&buf
[bc
], buf
[bc
- 1], repeat
);
4033 printf_filtered ("Repeat count %d too large for buffer: ", repeat
);
4034 puts_filtered (buf
);
4035 puts_filtered ("\n");
4039 if (bc
< sizeof_buf
- 1)
4047 puts_filtered ("Remote packet too long: ");
4048 puts_filtered (buf
);
4049 puts_filtered ("\n");
4056 /* Read a packet from the remote machine, with error checking, and
4057 store it in BUF. If FOREVER, wait forever rather than timing out;
4058 this is used (in synchronous mode) to wait for a target that is is
4059 executing user code to stop. */
4060 /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we
4061 don't have to change all the calls to getpkt to deal with the
4062 return value, because at the moment I don't know what the right
4063 thing to do it for those. */
4071 timed_out
= getpkt_sane (buf
, sizeof_buf
, forever
);
4075 /* Read a packet from the remote machine, with error checking, and
4076 store it in BUF. If FOREVER, wait forever rather than timing out;
4077 this is used (in synchronous mode) to wait for a target that is is
4078 executing user code to stop. If FOREVER == 0, this function is
4079 allowed to time out gracefully and return an indication of this to
4082 getpkt_sane (char *buf
,
4091 strcpy (buf
, "timeout");
4095 timeout
= watchdog
> 0 ? watchdog
: -1;
4099 timeout
= remote_timeout
;
4103 for (tries
= 1; tries
<= MAX_TRIES
; tries
++)
4105 /* This can loop forever if the remote side sends us characters
4106 continuously, but if it pauses, we'll get a zero from readchar
4107 because of timeout. Then we'll count that as a retry. */
4109 /* Note that we will only wait forever prior to the start of a packet.
4110 After that, we expect characters to arrive at a brisk pace. They
4111 should show up within remote_timeout intervals. */
4115 c
= readchar (timeout
);
4117 if (c
== SERIAL_TIMEOUT
)
4119 if (forever
) /* Watchdog went off? Kill the target. */
4122 target_mourn_inferior ();
4123 error ("Watchdog has expired. Target detached.\n");
4126 fputs_filtered ("Timed out.\n", gdb_stdlog
);
4132 /* We've found the start of a packet, now collect the data. */
4134 val
= read_frame (buf
, sizeof_buf
);
4140 fprintf_unfiltered (gdb_stdlog
, "Packet received: ");
4141 fputstr_unfiltered (buf
, 0, gdb_stdlog
);
4142 fprintf_unfiltered (gdb_stdlog
, "\n");
4144 serial_write (remote_desc
, "+", 1);
4148 /* Try the whole thing again. */
4150 serial_write (remote_desc
, "-", 1);
4153 /* We have tried hard enough, and just can't receive the packet. Give up. */
4155 printf_unfiltered ("Ignoring packet error, continuing...\n");
4156 serial_write (remote_desc
, "+", 1);
4163 /* For some mysterious reason, wait_for_inferior calls kill instead of
4164 mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */
4168 target_mourn_inferior ();
4172 /* Use catch_errors so the user can quit from gdb even when we aren't on
4173 speaking terms with the remote system. */
4174 catch_errors ((catch_errors_ftype
*) putpkt
, "k", "", RETURN_MASK_ERROR
);
4176 /* Don't wait for it to die. I'm not really sure it matters whether
4177 we do or not. For the existing stubs, kill is a noop. */
4178 target_mourn_inferior ();
4181 /* Async version of remote_kill. */
4183 remote_async_kill (void)
4185 /* Unregister the file descriptor from the event loop. */
4186 if (target_is_async_p ())
4187 serial_async (remote_desc
, NULL
, 0);
4189 /* For some mysterious reason, wait_for_inferior calls kill instead of
4190 mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */
4194 target_mourn_inferior ();
4198 /* Use catch_errors so the user can quit from gdb even when we aren't on
4199 speaking terms with the remote system. */
4200 catch_errors ((catch_errors_ftype
*) putpkt
, "k", "", RETURN_MASK_ERROR
);
4202 /* Don't wait for it to die. I'm not really sure it matters whether
4203 we do or not. For the existing stubs, kill is a noop. */
4204 target_mourn_inferior ();
4210 remote_mourn_1 (&remote_ops
);
4214 remote_async_mourn (void)
4216 remote_mourn_1 (&remote_async_ops
);
4220 extended_remote_mourn (void)
4222 /* We do _not_ want to mourn the target like this; this will
4223 remove the extended remote target from the target stack,
4224 and the next time the user says "run" it'll fail.
4226 FIXME: What is the right thing to do here? */
4228 remote_mourn_1 (&extended_remote_ops
);
4232 /* Worker function for remote_mourn. */
4234 remote_mourn_1 (struct target_ops
*target
)
4236 unpush_target (target
);
4237 generic_mourn_inferior ();
4240 /* In the extended protocol we want to be able to do things like
4241 "run" and have them basically work as expected. So we need
4242 a special create_inferior function.
4244 FIXME: One day add support for changing the exec file
4245 we're debugging, arguments and an environment. */
4248 extended_remote_create_inferior (char *exec_file
, char *args
, char **env
,
4251 /* Rip out the breakpoints; we'll reinsert them after restarting
4252 the remote server. */
4253 remove_breakpoints ();
4255 /* Now restart the remote server. */
4256 extended_remote_restart ();
4258 /* Now put the breakpoints back in. This way we're safe if the
4259 restart function works via a unix fork on the remote side. */
4260 insert_breakpoints ();
4262 /* Clean up from the last time we were running. */
4263 clear_proceed_status ();
4265 /* Let the remote process run. */
4266 proceed (-1, TARGET_SIGNAL_0
, 0);
4269 /* Async version of extended_remote_create_inferior. */
4271 extended_remote_async_create_inferior (char *exec_file
, char *args
, char **env
,
4274 /* Rip out the breakpoints; we'll reinsert them after restarting
4275 the remote server. */
4276 remove_breakpoints ();
4278 /* If running asynchronously, register the target file descriptor
4279 with the event loop. */
4280 if (event_loop_p
&& target_can_async_p ())
4281 target_async (inferior_event_handler
, 0);
4283 /* Now restart the remote server. */
4284 extended_remote_restart ();
4286 /* Now put the breakpoints back in. This way we're safe if the
4287 restart function works via a unix fork on the remote side. */
4288 insert_breakpoints ();
4290 /* Clean up from the last time we were running. */
4291 clear_proceed_status ();
4293 /* Let the remote process run. */
4294 proceed (-1, TARGET_SIGNAL_0
, 0);
4298 /* On some machines, e.g. 68k, we may use a different breakpoint
4299 instruction than other targets; in those use
4300 DEPRECATED_REMOTE_BREAKPOINT instead of just BREAKPOINT_FROM_PC.
4301 Also, bi-endian targets may define
4302 DEPRECATED_LITTLE_REMOTE_BREAKPOINT and
4303 DEPRECATED_BIG_REMOTE_BREAKPOINT. If none of these are defined, we
4304 just call the standard routines that are in mem-break.c. */
4306 /* NOTE: cagney/2003-06-08: This is silly. A remote and simulator
4307 target should use an identical BREAKPOINT_FROM_PC. As for native,
4308 the ARCH-OS-tdep.c code can override the default. */
4310 #if defined (DEPRECATED_LITTLE_REMOTE_BREAKPOINT) && defined (DEPRECATED_BIG_REMOTE_BREAKPOINT) && !defined(DEPRECATED_REMOTE_BREAKPOINT)
4311 #define DEPRECATED_REMOTE_BREAKPOINT
4314 #ifdef DEPRECATED_REMOTE_BREAKPOINT
4316 /* If the target isn't bi-endian, just pretend it is. */
4317 #if !defined (DEPRECATED_LITTLE_REMOTE_BREAKPOINT) && !defined (DEPRECATED_BIG_REMOTE_BREAKPOINT)
4318 #define DEPRECATED_LITTLE_REMOTE_BREAKPOINT DEPRECATED_REMOTE_BREAKPOINT
4319 #define DEPRECATED_BIG_REMOTE_BREAKPOINT DEPRECATED_REMOTE_BREAKPOINT
4322 static unsigned char big_break_insn
[] = DEPRECATED_BIG_REMOTE_BREAKPOINT
;
4323 static unsigned char little_break_insn
[] = DEPRECATED_LITTLE_REMOTE_BREAKPOINT
;
4325 #endif /* DEPRECATED_REMOTE_BREAKPOINT */
4327 /* Insert a breakpoint on targets that don't have any better
4328 breakpoint support. We read the contents of the target location
4329 and stash it, then overwrite it with a breakpoint instruction.
4330 ADDR is the target location in the target machine. CONTENTS_CACHE
4331 is a pointer to memory allocated for saving the target contents.
4332 It is guaranteed by the caller to be long enough to save the number
4333 of bytes returned by BREAKPOINT_FROM_PC. */
4336 remote_insert_breakpoint (CORE_ADDR addr
, char *contents_cache
)
4338 struct remote_state
*rs
= get_remote_state ();
4339 #ifdef DEPRECATED_REMOTE_BREAKPOINT
4344 /* Try the "Z" s/w breakpoint packet if it is not already disabled.
4345 If it succeeds, then set the support to PACKET_ENABLE. If it
4346 fails, and the user has explicitly requested the Z support then
4347 report an error, otherwise, mark it disabled and go on. */
4349 if (remote_protocol_Z
[Z_PACKET_SOFTWARE_BP
].support
!= PACKET_DISABLE
)
4351 char *buf
= alloca (rs
->remote_packet_size
);
4354 addr
= remote_address_masked (addr
);
4358 p
+= hexnumstr (p
, (ULONGEST
) addr
);
4359 BREAKPOINT_FROM_PC (&addr
, &bp_size
);
4360 sprintf (p
, ",%d", bp_size
);
4363 getpkt (buf
, (rs
->remote_packet_size
), 0);
4365 switch (packet_ok (buf
, &remote_protocol_Z
[Z_PACKET_SOFTWARE_BP
]))
4371 case PACKET_UNKNOWN
:
4376 #ifdef DEPRECATED_REMOTE_BREAKPOINT
4377 val
= target_read_memory (addr
, contents_cache
, sizeof big_break_insn
);
4381 if (TARGET_BYTE_ORDER
== BFD_ENDIAN_BIG
)
4382 val
= target_write_memory (addr
, (char *) big_break_insn
,
4383 sizeof big_break_insn
);
4385 val
= target_write_memory (addr
, (char *) little_break_insn
,
4386 sizeof little_break_insn
);
4391 return memory_insert_breakpoint (addr
, contents_cache
);
4392 #endif /* DEPRECATED_REMOTE_BREAKPOINT */
4396 remote_remove_breakpoint (CORE_ADDR addr
, char *contents_cache
)
4398 struct remote_state
*rs
= get_remote_state ();
4401 if (remote_protocol_Z
[Z_PACKET_SOFTWARE_BP
].support
!= PACKET_DISABLE
)
4403 char *buf
= alloca (rs
->remote_packet_size
);
4410 addr
= remote_address_masked (addr
);
4411 p
+= hexnumstr (p
, (ULONGEST
) addr
);
4412 BREAKPOINT_FROM_PC (&addr
, &bp_size
);
4413 sprintf (p
, ",%d", bp_size
);
4416 getpkt (buf
, (rs
->remote_packet_size
), 0);
4418 return (buf
[0] == 'E');
4421 #ifdef DEPRECATED_REMOTE_BREAKPOINT
4422 return target_write_memory (addr
, contents_cache
, sizeof big_break_insn
);
4424 return memory_remove_breakpoint (addr
, contents_cache
);
4425 #endif /* DEPRECATED_REMOTE_BREAKPOINT */
4429 watchpoint_to_Z_packet (int type
)
4443 internal_error (__FILE__
, __LINE__
,
4444 "hw_bp_to_z: bad watchpoint type %d", type
);
4449 remote_insert_watchpoint (CORE_ADDR addr
, int len
, int type
)
4451 struct remote_state
*rs
= get_remote_state ();
4452 char *buf
= alloca (rs
->remote_packet_size
);
4454 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
4456 if (remote_protocol_Z
[packet
].support
== PACKET_DISABLE
)
4457 error ("Can't set hardware watchpoints without the '%s' (%s) packet\n",
4458 remote_protocol_Z
[packet
].name
,
4459 remote_protocol_Z
[packet
].title
);
4461 sprintf (buf
, "Z%x,", packet
);
4462 p
= strchr (buf
, '\0');
4463 addr
= remote_address_masked (addr
);
4464 p
+= hexnumstr (p
, (ULONGEST
) addr
);
4465 sprintf (p
, ",%x", len
);
4468 getpkt (buf
, (rs
->remote_packet_size
), 0);
4470 switch (packet_ok (buf
, &remote_protocol_Z
[packet
]))
4473 case PACKET_UNKNOWN
:
4478 internal_error (__FILE__
, __LINE__
,
4479 "remote_insert_watchpoint: reached end of function");
4484 remote_remove_watchpoint (CORE_ADDR addr
, int len
, int type
)
4486 struct remote_state
*rs
= get_remote_state ();
4487 char *buf
= alloca (rs
->remote_packet_size
);
4489 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
4491 if (remote_protocol_Z
[packet
].support
== PACKET_DISABLE
)
4492 error ("Can't clear hardware watchpoints without the '%s' (%s) packet\n",
4493 remote_protocol_Z
[packet
].name
,
4494 remote_protocol_Z
[packet
].title
);
4496 sprintf (buf
, "z%x,", packet
);
4497 p
= strchr (buf
, '\0');
4498 addr
= remote_address_masked (addr
);
4499 p
+= hexnumstr (p
, (ULONGEST
) addr
);
4500 sprintf (p
, ",%x", len
);
4502 getpkt (buf
, (rs
->remote_packet_size
), 0);
4504 switch (packet_ok (buf
, &remote_protocol_Z
[packet
]))
4507 case PACKET_UNKNOWN
:
4512 internal_error (__FILE__
, __LINE__
,
4513 "remote_remove_watchpoint: reached end of function");
4517 int remote_hw_watchpoint_limit
= -1;
4518 int remote_hw_breakpoint_limit
= -1;
4521 remote_check_watch_resources (int type
, int cnt
, int ot
)
4523 if (type
== bp_hardware_breakpoint
)
4525 if (remote_hw_breakpoint_limit
== 0)
4527 else if (remote_hw_breakpoint_limit
< 0)
4529 else if (cnt
<= remote_hw_breakpoint_limit
)
4534 if (remote_hw_watchpoint_limit
== 0)
4536 else if (remote_hw_watchpoint_limit
< 0)
4540 else if (cnt
<= remote_hw_watchpoint_limit
)
4547 remote_stopped_by_watchpoint (void)
4549 return remote_stopped_by_watchpoint_p
;
4552 extern int stepped_after_stopped_by_watchpoint
;
4555 remote_stopped_data_address (void)
4557 if (remote_stopped_by_watchpoint ()
4558 || stepped_after_stopped_by_watchpoint
)
4559 return remote_watch_data_address
;
4560 return (CORE_ADDR
)0;
4565 remote_insert_hw_breakpoint (CORE_ADDR addr
, char *shadow
)
4568 struct remote_state
*rs
= get_remote_state ();
4569 char *buf
= alloca (rs
->remote_packet_size
);
4572 /* The length field should be set to the size of a breakpoint
4575 BREAKPOINT_FROM_PC (&addr
, &len
);
4577 if (remote_protocol_Z
[Z_PACKET_HARDWARE_BP
].support
== PACKET_DISABLE
)
4578 error ("Can't set hardware breakpoint without the '%s' (%s) packet\n",
4579 remote_protocol_Z
[Z_PACKET_HARDWARE_BP
].name
,
4580 remote_protocol_Z
[Z_PACKET_HARDWARE_BP
].title
);
4586 addr
= remote_address_masked (addr
);
4587 p
+= hexnumstr (p
, (ULONGEST
) addr
);
4588 sprintf (p
, ",%x", len
);
4591 getpkt (buf
, (rs
->remote_packet_size
), 0);
4593 switch (packet_ok (buf
, &remote_protocol_Z
[Z_PACKET_HARDWARE_BP
]))
4596 case PACKET_UNKNOWN
:
4601 internal_error (__FILE__
, __LINE__
,
4602 "remote_insert_hw_breakpoint: reached end of function");
4607 remote_remove_hw_breakpoint (CORE_ADDR addr
, char *shadow
)
4610 struct remote_state
*rs
= get_remote_state ();
4611 char *buf
= alloca (rs
->remote_packet_size
);
4614 /* The length field should be set to the size of a breakpoint
4617 BREAKPOINT_FROM_PC (&addr
, &len
);
4619 if (remote_protocol_Z
[Z_PACKET_HARDWARE_BP
].support
== PACKET_DISABLE
)
4620 error ("Can't clear hardware breakpoint without the '%s' (%s) packet\n",
4621 remote_protocol_Z
[Z_PACKET_HARDWARE_BP
].name
,
4622 remote_protocol_Z
[Z_PACKET_HARDWARE_BP
].title
);
4628 addr
= remote_address_masked (addr
);
4629 p
+= hexnumstr (p
, (ULONGEST
) addr
);
4630 sprintf (p
, ",%x", len
);
4633 getpkt (buf
, (rs
->remote_packet_size
), 0);
4635 switch (packet_ok (buf
, &remote_protocol_Z
[Z_PACKET_HARDWARE_BP
]))
4638 case PACKET_UNKNOWN
:
4643 internal_error (__FILE__
, __LINE__
,
4644 "remote_remove_hw_breakpoint: reached end of function");
4647 /* Some targets are only capable of doing downloads, and afterwards
4648 they switch to the remote serial protocol. This function provides
4649 a clean way to get from the download target to the remote target.
4650 It's basically just a wrapper so that we don't have to expose any
4651 of the internal workings of remote.c.
4653 Prior to calling this routine, you should shutdown the current
4654 target code, else you will get the "A program is being debugged
4655 already..." message. Usually a call to pop_target() suffices. */
4658 push_remote_target (char *name
, int from_tty
)
4660 printf_filtered ("Switching to remote protocol\n");
4661 remote_open (name
, from_tty
);
4664 /* Table used by the crc32 function to calcuate the checksum. */
4666 static unsigned long crc32_table
[256] =
4669 static unsigned long
4670 crc32 (unsigned char *buf
, int len
, unsigned int crc
)
4672 if (!crc32_table
[1])
4674 /* Initialize the CRC table and the decoding table. */
4678 for (i
= 0; i
< 256; i
++)
4680 for (c
= i
<< 24, j
= 8; j
> 0; --j
)
4681 c
= c
& 0x80000000 ? (c
<< 1) ^ 0x04c11db7 : (c
<< 1);
4688 crc
= (crc
<< 8) ^ crc32_table
[((crc
>> 24) ^ *buf
) & 255];
4694 /* compare-sections command
4696 With no arguments, compares each loadable section in the exec bfd
4697 with the same memory range on the target, and reports mismatches.
4698 Useful for verifying the image on the target against the exec file.
4699 Depends on the target understanding the new "qCRC:" request. */
4701 /* FIXME: cagney/1999-10-26: This command should be broken down into a
4702 target method (target verify memory) and generic version of the
4703 actual command. This will allow other high-level code (especially
4704 generic_load()) to make use of this target functionality. */
4707 compare_sections_command (char *args
, int from_tty
)
4709 struct remote_state
*rs
= get_remote_state ();
4711 unsigned long host_crc
, target_crc
;
4712 extern bfd
*exec_bfd
;
4713 struct cleanup
*old_chain
;
4716 const char *sectname
;
4717 char *buf
= alloca (rs
->remote_packet_size
);
4724 error ("command cannot be used without an exec file");
4725 if (!current_target
.to_shortname
||
4726 strcmp (current_target
.to_shortname
, "remote") != 0)
4727 error ("command can only be used with remote target");
4729 for (s
= exec_bfd
->sections
; s
; s
= s
->next
)
4731 if (!(s
->flags
& SEC_LOAD
))
4732 continue; /* skip non-loadable section */
4734 size
= bfd_get_section_size (s
);
4736 continue; /* skip zero-length section */
4738 sectname
= bfd_get_section_name (exec_bfd
, s
);
4739 if (args
&& strcmp (args
, sectname
) != 0)
4740 continue; /* not the section selected by user */
4742 matched
= 1; /* do this section */
4744 /* FIXME: assumes lma can fit into long */
4745 sprintf (buf
, "qCRC:%lx,%lx", (long) lma
, (long) size
);
4748 /* be clever; compute the host_crc before waiting for target reply */
4749 sectdata
= xmalloc (size
);
4750 old_chain
= make_cleanup (xfree
, sectdata
);
4751 bfd_get_section_contents (exec_bfd
, s
, sectdata
, 0, size
);
4752 host_crc
= crc32 ((unsigned char *) sectdata
, size
, 0xffffffff);
4754 getpkt (buf
, (rs
->remote_packet_size
), 0);
4756 error ("target memory fault, section %s, range 0x%s -- 0x%s",
4757 sectname
, paddr (lma
), paddr (lma
+ size
));
4759 error ("remote target does not support this operation");
4761 for (target_crc
= 0, tmp
= &buf
[1]; *tmp
; tmp
++)
4762 target_crc
= target_crc
* 16 + fromhex (*tmp
);
4764 printf_filtered ("Section %s, range 0x%s -- 0x%s: ",
4765 sectname
, paddr (lma
), paddr (lma
+ size
));
4766 if (host_crc
== target_crc
)
4767 printf_filtered ("matched.\n");
4770 printf_filtered ("MIS-MATCHED!\n");
4774 do_cleanups (old_chain
);
4777 warning ("One or more sections of the remote executable does not match\n\
4778 the loaded file\n");
4779 if (args
&& !matched
)
4780 printf_filtered ("No loaded section named '%s'.\n", args
);
4784 remote_xfer_partial (struct target_ops
*ops
, enum target_object object
,
4785 const char *annex
, void *readbuf
, const void *writebuf
,
4786 ULONGEST offset
, LONGEST len
)
4788 struct remote_state
*rs
= get_remote_state ();
4790 char *buf2
= alloca (rs
->remote_packet_size
);
4791 char *p2
= &buf2
[0];
4794 /* Only handle reads. */
4795 if (writebuf
!= NULL
|| readbuf
== NULL
)
4798 /* Map pre-existing objects onto letters. DO NOT do this for new
4799 objects!!! Instead specify new query packets. */
4802 case TARGET_OBJECT_KOD
:
4805 case TARGET_OBJECT_AVR
:
4809 case TARGET_OBJECT_AUXV
:
4810 if (remote_protocol_qPart_auxv
.support
!= PACKET_DISABLE
)
4812 unsigned int total
= 0;
4815 LONGEST n
= min ((rs
->remote_packet_size
- 2) / 2, len
);
4816 snprintf (buf2
, rs
->remote_packet_size
,
4817 "qPart:auxv:read::%s,%s",
4818 phex_nz (offset
, sizeof offset
),
4819 phex_nz (n
, sizeof n
));
4822 return total
> 0 ? total
: i
;
4824 getpkt (buf2
, rs
->remote_packet_size
, 0);
4825 if (packet_ok (buf2
, &remote_protocol_qPart_auxv
) != PACKET_OK
)
4826 return total
> 0 ? total
: -1;
4827 if (buf2
[0] == 'O' && buf2
[1] == 'K' && buf2
[2] == '\0')
4828 break; /* Got EOF indicator. */
4829 /* Got some data. */
4830 i
= hex2bin (buf2
, readbuf
, len
);
4833 readbuf
= (void *) ((char *) readbuf
+ i
);
4847 /* Note: a zero OFFSET and LEN can be used to query the minimum
4849 if (offset
== 0 && len
== 0)
4850 return (rs
->remote_packet_size
);
4851 /* Minimum outbuf size is (rs->remote_packet_size) - if bufsiz is
4852 not large enough let the caller. */
4853 if (len
< (rs
->remote_packet_size
))
4855 len
= rs
->remote_packet_size
;
4857 /* except for querying the minimum buffer size, target must be open */
4859 error ("remote query is only available after target open");
4861 gdb_assert (annex
!= NULL
);
4862 gdb_assert (readbuf
!= NULL
);
4867 /* we used one buffer char for the remote protocol q command and another
4868 for the query type. As the remote protocol encapsulation uses 4 chars
4869 plus one extra in case we are debugging (remote_debug),
4870 we have PBUFZIZ - 7 left to pack the query string */
4872 while (annex
[i
] && (i
< ((rs
->remote_packet_size
) - 8)))
4874 /* Bad caller may have sent forbidden characters. */
4875 gdb_assert (isprint (annex
[i
]) && annex
[i
] != '$' && annex
[i
] != '#');
4880 gdb_assert (annex
[i
] == '\0');
4886 getpkt (readbuf
, len
, 0);
4888 return strlen (readbuf
);
4892 remote_rcmd (char *command
,
4893 struct ui_file
*outbuf
)
4895 struct remote_state
*rs
= get_remote_state ();
4897 char *buf
= alloca (rs
->remote_packet_size
);
4901 error ("remote rcmd is only available after target open");
4903 /* Send a NULL command across as an empty command */
4904 if (command
== NULL
)
4907 /* The query prefix */
4908 strcpy (buf
, "qRcmd,");
4909 p
= strchr (buf
, '\0');
4911 if ((strlen (buf
) + strlen (command
) * 2 + 8/*misc*/) > (rs
->remote_packet_size
))
4912 error ("\"monitor\" command ``%s'' is too long\n", command
);
4914 /* Encode the actual command */
4915 bin2hex (command
, p
, 0);
4917 if (putpkt (buf
) < 0)
4918 error ("Communication problem with target\n");
4920 /* get/display the response */
4923 /* XXX - see also tracepoint.c:remote_get_noisy_reply() */
4925 getpkt (buf
, (rs
->remote_packet_size
), 0);
4927 error ("Target does not support this command\n");
4928 if (buf
[0] == 'O' && buf
[1] != 'K')
4930 remote_console_output (buf
+ 1); /* 'O' message from stub */
4933 if (strcmp (buf
, "OK") == 0)
4935 if (strlen (buf
) == 3 && buf
[0] == 'E'
4936 && isdigit (buf
[1]) && isdigit (buf
[2]))
4938 error ("Protocol error with Rcmd");
4940 for (p
= buf
; p
[0] != '\0' && p
[1] != '\0'; p
+= 2)
4942 char c
= (fromhex (p
[0]) << 4) + fromhex (p
[1]);
4943 fputc_unfiltered (c
, outbuf
);
4950 packet_command (char *args
, int from_tty
)
4952 struct remote_state
*rs
= get_remote_state ();
4953 char *buf
= alloca (rs
->remote_packet_size
);
4956 error ("command can only be used with remote target");
4959 error ("remote-packet command requires packet text as argument");
4961 puts_filtered ("sending: ");
4962 print_packet (args
);
4963 puts_filtered ("\n");
4966 getpkt (buf
, (rs
->remote_packet_size
), 0);
4967 puts_filtered ("received: ");
4969 puts_filtered ("\n");
4973 /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------------- */
4975 static void display_thread_info (struct gdb_ext_thread_info
*info
);
4977 static void threadset_test_cmd (char *cmd
, int tty
);
4979 static void threadalive_test (char *cmd
, int tty
);
4981 static void threadlist_test_cmd (char *cmd
, int tty
);
4983 int get_and_display_threadinfo (threadref
* ref
);
4985 static void threadinfo_test_cmd (char *cmd
, int tty
);
4987 static int thread_display_step (threadref
* ref
, void *context
);
4989 static void threadlist_update_test_cmd (char *cmd
, int tty
);
4991 static void init_remote_threadtests (void);
4993 #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid */
4996 threadset_test_cmd (char *cmd
, int tty
)
4998 int sample_thread
= SAMPLE_THREAD
;
5000 printf_filtered ("Remote threadset test\n");
5001 set_thread (sample_thread
, 1);
5006 threadalive_test (char *cmd
, int tty
)
5008 int sample_thread
= SAMPLE_THREAD
;
5010 if (remote_thread_alive (pid_to_ptid (sample_thread
)))
5011 printf_filtered ("PASS: Thread alive test\n");
5013 printf_filtered ("FAIL: Thread alive test\n");
5016 void output_threadid (char *title
, threadref
* ref
);
5019 output_threadid (char *title
, threadref
*ref
)
5023 pack_threadid (&hexid
[0], ref
); /* Convert threead id into hex */
5025 printf_filtered ("%s %s\n", title
, (&hexid
[0]));
5029 threadlist_test_cmd (char *cmd
, int tty
)
5032 threadref nextthread
;
5033 int done
, result_count
;
5034 threadref threadlist
[3];
5036 printf_filtered ("Remote Threadlist test\n");
5037 if (!remote_get_threadlist (startflag
, &nextthread
, 3, &done
,
5038 &result_count
, &threadlist
[0]))
5039 printf_filtered ("FAIL: threadlist test\n");
5042 threadref
*scan
= threadlist
;
5043 threadref
*limit
= scan
+ result_count
;
5045 while (scan
< limit
)
5046 output_threadid (" thread ", scan
++);
5051 display_thread_info (struct gdb_ext_thread_info
*info
)
5053 output_threadid ("Threadid: ", &info
->threadid
);
5054 printf_filtered ("Name: %s\n ", info
->shortname
);
5055 printf_filtered ("State: %s\n", info
->display
);
5056 printf_filtered ("other: %s\n\n", info
->more_display
);
5060 get_and_display_threadinfo (threadref
*ref
)
5064 struct gdb_ext_thread_info threadinfo
;
5066 set
= TAG_THREADID
| TAG_EXISTS
| TAG_THREADNAME
5067 | TAG_MOREDISPLAY
| TAG_DISPLAY
;
5068 if (0 != (result
= remote_get_threadinfo (ref
, set
, &threadinfo
)))
5069 display_thread_info (&threadinfo
);
5074 threadinfo_test_cmd (char *cmd
, int tty
)
5076 int athread
= SAMPLE_THREAD
;
5080 int_to_threadref (&thread
, athread
);
5081 printf_filtered ("Remote Threadinfo test\n");
5082 if (!get_and_display_threadinfo (&thread
))
5083 printf_filtered ("FAIL cannot get thread info\n");
5087 thread_display_step (threadref
*ref
, void *context
)
5089 /* output_threadid(" threadstep ",ref); *//* simple test */
5090 return get_and_display_threadinfo (ref
);
5094 threadlist_update_test_cmd (char *cmd
, int tty
)
5096 printf_filtered ("Remote Threadlist update test\n");
5097 remote_threadlist_iterator (thread_display_step
, 0, CRAZY_MAX_THREADS
);
5101 init_remote_threadtests (void)
5103 add_com ("tlist", class_obscure
, threadlist_test_cmd
,
5104 "Fetch and print the remote list of thread identifiers, one pkt only");
5105 add_com ("tinfo", class_obscure
, threadinfo_test_cmd
,
5106 "Fetch and display info about one thread");
5107 add_com ("tset", class_obscure
, threadset_test_cmd
,
5108 "Test setting to a different thread");
5109 add_com ("tupd", class_obscure
, threadlist_update_test_cmd
,
5110 "Iterate through updating all remote thread info");
5111 add_com ("talive", class_obscure
, threadalive_test
,
5112 " Remote thread alive test ");
5117 /* Convert a thread ID to a string. Returns the string in a static
5121 remote_pid_to_str (ptid_t ptid
)
5123 static char buf
[30];
5125 sprintf (buf
, "Thread %d", PIDGET (ptid
));
5130 init_remote_ops (void)
5132 remote_ops
.to_shortname
= "remote";
5133 remote_ops
.to_longname
= "Remote serial target in gdb-specific protocol";
5135 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
5136 Specify the serial device it is connected to\n\
5137 (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).";
5138 remote_ops
.to_open
= remote_open
;
5139 remote_ops
.to_close
= remote_close
;
5140 remote_ops
.to_detach
= remote_detach
;
5141 remote_ops
.to_disconnect
= remote_disconnect
;
5142 remote_ops
.to_resume
= remote_resume
;
5143 remote_ops
.to_wait
= remote_wait
;
5144 remote_ops
.to_fetch_registers
= remote_fetch_registers
;
5145 remote_ops
.to_store_registers
= remote_store_registers
;
5146 remote_ops
.to_prepare_to_store
= remote_prepare_to_store
;
5147 remote_ops
.to_xfer_memory
= remote_xfer_memory
;
5148 remote_ops
.to_files_info
= remote_files_info
;
5149 remote_ops
.to_insert_breakpoint
= remote_insert_breakpoint
;
5150 remote_ops
.to_remove_breakpoint
= remote_remove_breakpoint
;
5151 remote_ops
.to_stopped_by_watchpoint
= remote_stopped_by_watchpoint
;
5152 remote_ops
.to_stopped_data_address
= remote_stopped_data_address
;
5153 remote_ops
.to_can_use_hw_breakpoint
= remote_check_watch_resources
;
5154 remote_ops
.to_insert_hw_breakpoint
= remote_insert_hw_breakpoint
;
5155 remote_ops
.to_remove_hw_breakpoint
= remote_remove_hw_breakpoint
;
5156 remote_ops
.to_insert_watchpoint
= remote_insert_watchpoint
;
5157 remote_ops
.to_remove_watchpoint
= remote_remove_watchpoint
;
5158 remote_ops
.to_kill
= remote_kill
;
5159 remote_ops
.to_load
= generic_load
;
5160 remote_ops
.to_mourn_inferior
= remote_mourn
;
5161 remote_ops
.to_thread_alive
= remote_thread_alive
;
5162 remote_ops
.to_find_new_threads
= remote_threads_info
;
5163 remote_ops
.to_pid_to_str
= remote_pid_to_str
;
5164 remote_ops
.to_extra_thread_info
= remote_threads_extra_info
;
5165 remote_ops
.to_stop
= remote_stop
;
5166 remote_ops
.to_xfer_partial
= remote_xfer_partial
;
5167 remote_ops
.to_rcmd
= remote_rcmd
;
5168 remote_ops
.to_stratum
= process_stratum
;
5169 remote_ops
.to_has_all_memory
= 1;
5170 remote_ops
.to_has_memory
= 1;
5171 remote_ops
.to_has_stack
= 1;
5172 remote_ops
.to_has_registers
= 1;
5173 remote_ops
.to_has_execution
= 1;
5174 remote_ops
.to_has_thread_control
= tc_schedlock
; /* can lock scheduler */
5175 remote_ops
.to_magic
= OPS_MAGIC
;
5178 /* Set up the extended remote vector by making a copy of the standard
5179 remote vector and adding to it. */
5182 init_extended_remote_ops (void)
5184 extended_remote_ops
= remote_ops
;
5186 extended_remote_ops
.to_shortname
= "extended-remote";
5187 extended_remote_ops
.to_longname
=
5188 "Extended remote serial target in gdb-specific protocol";
5189 extended_remote_ops
.to_doc
=
5190 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
5191 Specify the serial device it is connected to (e.g. /dev/ttya).",
5192 extended_remote_ops
.to_open
= extended_remote_open
;
5193 extended_remote_ops
.to_create_inferior
= extended_remote_create_inferior
;
5194 extended_remote_ops
.to_mourn_inferior
= extended_remote_mourn
;
5198 remote_can_async_p (void)
5200 /* We're async whenever the serial device is. */
5201 return (current_target
.to_async_mask_value
) && serial_can_async_p (remote_desc
);
5205 remote_is_async_p (void)
5207 /* We're async whenever the serial device is. */
5208 return (current_target
.to_async_mask_value
) && serial_is_async_p (remote_desc
);
5211 /* Pass the SERIAL event on and up to the client. One day this code
5212 will be able to delay notifying the client of an event until the
5213 point where an entire packet has been received. */
5215 static void (*async_client_callback
) (enum inferior_event_type event_type
, void *context
);
5216 static void *async_client_context
;
5217 static serial_event_ftype remote_async_serial_handler
;
5220 remote_async_serial_handler (struct serial
*scb
, void *context
)
5222 /* Don't propogate error information up to the client. Instead let
5223 the client find out about the error by querying the target. */
5224 async_client_callback (INF_REG_EVENT
, async_client_context
);
5228 remote_async (void (*callback
) (enum inferior_event_type event_type
, void *context
), void *context
)
5230 if (current_target
.to_async_mask_value
== 0)
5231 internal_error (__FILE__
, __LINE__
,
5232 "Calling remote_async when async is masked");
5234 if (callback
!= NULL
)
5236 serial_async (remote_desc
, remote_async_serial_handler
, NULL
);
5237 async_client_callback
= callback
;
5238 async_client_context
= context
;
5241 serial_async (remote_desc
, NULL
, NULL
);
5244 /* Target async and target extended-async.
5246 This are temporary targets, until it is all tested. Eventually
5247 async support will be incorporated int the usual 'remote'
5251 init_remote_async_ops (void)
5253 remote_async_ops
.to_shortname
= "async";
5254 remote_async_ops
.to_longname
= "Remote serial target in async version of the gdb-specific protocol";
5255 remote_async_ops
.to_doc
=
5256 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
5257 Specify the serial device it is connected to (e.g. /dev/ttya).";
5258 remote_async_ops
.to_open
= remote_async_open
;
5259 remote_async_ops
.to_close
= remote_close
;
5260 remote_async_ops
.to_detach
= remote_detach
;
5261 remote_async_ops
.to_disconnect
= remote_disconnect
;
5262 remote_async_ops
.to_resume
= remote_async_resume
;
5263 remote_async_ops
.to_wait
= remote_async_wait
;
5264 remote_async_ops
.to_fetch_registers
= remote_fetch_registers
;
5265 remote_async_ops
.to_store_registers
= remote_store_registers
;
5266 remote_async_ops
.to_prepare_to_store
= remote_prepare_to_store
;
5267 remote_async_ops
.to_xfer_memory
= remote_xfer_memory
;
5268 remote_async_ops
.to_files_info
= remote_files_info
;
5269 remote_async_ops
.to_insert_breakpoint
= remote_insert_breakpoint
;
5270 remote_async_ops
.to_remove_breakpoint
= remote_remove_breakpoint
;
5271 remote_async_ops
.to_can_use_hw_breakpoint
= remote_check_watch_resources
;
5272 remote_async_ops
.to_insert_hw_breakpoint
= remote_insert_hw_breakpoint
;
5273 remote_async_ops
.to_remove_hw_breakpoint
= remote_remove_hw_breakpoint
;
5274 remote_async_ops
.to_insert_watchpoint
= remote_insert_watchpoint
;
5275 remote_async_ops
.to_remove_watchpoint
= remote_remove_watchpoint
;
5276 remote_async_ops
.to_stopped_by_watchpoint
= remote_stopped_by_watchpoint
;
5277 remote_async_ops
.to_stopped_data_address
= remote_stopped_data_address
;
5278 remote_async_ops
.to_terminal_inferior
= remote_async_terminal_inferior
;
5279 remote_async_ops
.to_terminal_ours
= remote_async_terminal_ours
;
5280 remote_async_ops
.to_kill
= remote_async_kill
;
5281 remote_async_ops
.to_load
= generic_load
;
5282 remote_async_ops
.to_mourn_inferior
= remote_async_mourn
;
5283 remote_async_ops
.to_thread_alive
= remote_thread_alive
;
5284 remote_async_ops
.to_find_new_threads
= remote_threads_info
;
5285 remote_async_ops
.to_pid_to_str
= remote_pid_to_str
;
5286 remote_async_ops
.to_extra_thread_info
= remote_threads_extra_info
;
5287 remote_async_ops
.to_stop
= remote_stop
;
5288 remote_async_ops
.to_xfer_partial
= remote_xfer_partial
;
5289 remote_async_ops
.to_rcmd
= remote_rcmd
;
5290 remote_async_ops
.to_stratum
= process_stratum
;
5291 remote_async_ops
.to_has_all_memory
= 1;
5292 remote_async_ops
.to_has_memory
= 1;
5293 remote_async_ops
.to_has_stack
= 1;
5294 remote_async_ops
.to_has_registers
= 1;
5295 remote_async_ops
.to_has_execution
= 1;
5296 remote_async_ops
.to_has_thread_control
= tc_schedlock
; /* can lock scheduler */
5297 remote_async_ops
.to_can_async_p
= remote_can_async_p
;
5298 remote_async_ops
.to_is_async_p
= remote_is_async_p
;
5299 remote_async_ops
.to_async
= remote_async
;
5300 remote_async_ops
.to_async_mask_value
= 1;
5301 remote_async_ops
.to_magic
= OPS_MAGIC
;
5304 /* Set up the async extended remote vector by making a copy of the standard
5305 remote vector and adding to it. */
5308 init_extended_async_remote_ops (void)
5310 extended_async_remote_ops
= remote_async_ops
;
5312 extended_async_remote_ops
.to_shortname
= "extended-async";
5313 extended_async_remote_ops
.to_longname
=
5314 "Extended remote serial target in async gdb-specific protocol";
5315 extended_async_remote_ops
.to_doc
=
5316 "Use a remote computer via a serial line, using an async gdb-specific protocol.\n\
5317 Specify the serial device it is connected to (e.g. /dev/ttya).",
5318 extended_async_remote_ops
.to_open
= extended_remote_async_open
;
5319 extended_async_remote_ops
.to_create_inferior
= extended_remote_async_create_inferior
;
5320 extended_async_remote_ops
.to_mourn_inferior
= extended_remote_mourn
;
5324 set_remote_cmd (char *args
, int from_tty
)
5329 show_remote_cmd (char *args
, int from_tty
)
5331 /* FIXME: cagney/2002-06-15: This function should iterate over
5332 remote_show_cmdlist for a list of sub commands to show. */
5333 show_remote_protocol_Z_packet_cmd (args
, from_tty
, NULL
);
5334 show_remote_protocol_P_packet_cmd (args
, from_tty
, NULL
);
5335 show_remote_protocol_qSymbol_packet_cmd (args
, from_tty
, NULL
);
5336 show_remote_protocol_vcont_packet_cmd (args
, from_tty
, NULL
);
5337 show_remote_protocol_binary_download_cmd (args
, from_tty
, NULL
);
5338 show_remote_protocol_qPart_auxv_packet_cmd (args
, from_tty
, NULL
);
5342 build_remote_gdbarch_data (void)
5344 remote_address_size
= TARGET_ADDR_BIT
;
5347 /* Saved pointer to previous owner of the new_objfile event. */
5348 static void (*remote_new_objfile_chain
) (struct objfile
*);
5350 /* Function to be called whenever a new objfile (shlib) is detected. */
5352 remote_new_objfile (struct objfile
*objfile
)
5354 if (remote_desc
!= 0) /* Have a remote connection */
5356 remote_check_symbols (objfile
);
5358 /* Call predecessor on chain, if any. */
5359 if (remote_new_objfile_chain
!= 0 &&
5361 remote_new_objfile_chain (objfile
);
5365 _initialize_remote (void)
5367 static struct cmd_list_element
*remote_set_cmdlist
;
5368 static struct cmd_list_element
*remote_show_cmdlist
;
5369 struct cmd_list_element
*tmpcmd
;
5371 /* architecture specific data */
5372 remote_gdbarch_data_handle
= gdbarch_data_register_post_init (init_remote_state
);
5374 /* Old tacky stuff. NOTE: This comes after the remote protocol so
5375 that the remote protocol has been initialized. */
5376 DEPRECATED_REGISTER_GDBARCH_SWAP (remote_address_size
);
5377 deprecated_register_gdbarch_swap (NULL
, 0, build_remote_gdbarch_data
);
5380 add_target (&remote_ops
);
5382 init_extended_remote_ops ();
5383 add_target (&extended_remote_ops
);
5385 init_remote_async_ops ();
5386 add_target (&remote_async_ops
);
5388 init_extended_async_remote_ops ();
5389 add_target (&extended_async_remote_ops
);
5391 /* Hook into new objfile notification. */
5392 remote_new_objfile_chain
= deprecated_target_new_objfile_hook
;
5393 deprecated_target_new_objfile_hook
= remote_new_objfile
;
5396 init_remote_threadtests ();
5399 /* set/show remote ... */
5401 add_prefix_cmd ("remote", class_maintenance
, set_remote_cmd
, "\
5402 Remote protocol specific variables\n\
5403 Configure various remote-protocol specific variables such as\n\
5404 the packets being used",
5405 &remote_set_cmdlist
, "set remote ",
5406 0/*allow-unknown*/, &setlist
);
5407 add_prefix_cmd ("remote", class_maintenance
, show_remote_cmd
, "\
5408 Remote protocol specific variables\n\
5409 Configure various remote-protocol specific variables such as\n\
5410 the packets being used",
5411 &remote_show_cmdlist
, "show remote ",
5412 0/*allow-unknown*/, &showlist
);
5414 add_cmd ("compare-sections", class_obscure
, compare_sections_command
,
5415 "Compare section data on target to the exec file.\n\
5416 Argument is a single section name (default: all loaded sections).",
5419 add_cmd ("packet", class_maintenance
, packet_command
,
5420 "Send an arbitrary packet to a remote target.\n\
5421 maintenance packet TEXT\n\
5422 If GDB is talking to an inferior via the GDB serial protocol, then\n\
5423 this command sends the string TEXT to the inferior, and displays the\n\
5424 response packet. GDB supplies the initial `$' character, and the\n\
5425 terminating `#' character and checksum.",
5428 add_setshow_boolean_cmd ("remotebreak", no_class
, &remote_break
, "\
5429 Set whether to send break if interrupted.", "\
5430 Show whether to send break if interrupted.", "\
5431 If set, a break, instead of a cntrl-c, is sent to the remote target.", "\
5432 Whether to send break if interrupted is %s.",
5434 &setlist
, &showlist
);
5436 /* Install commands for configuring memory read/write packets. */
5438 add_cmd ("remotewritesize", no_class
, set_memory_write_packet_size
,
5439 "Set the maximum number of bytes per memory write packet (deprecated).\n",
5441 add_cmd ("remotewritesize", no_class
, show_memory_write_packet_size
,
5442 "Show the maximum number of bytes per memory write packet (deprecated).\n",
5444 add_cmd ("memory-write-packet-size", no_class
,
5445 set_memory_write_packet_size
,
5446 "Set the maximum number of bytes per memory-write packet.\n"
5447 "Specify the number of bytes in a packet or 0 (zero) for the\n"
5448 "default packet size. The actual limit is further reduced\n"
5449 "dependent on the target. Specify ``fixed'' to disable the\n"
5450 "further restriction and ``limit'' to enable that restriction\n",
5451 &remote_set_cmdlist
);
5452 add_cmd ("memory-read-packet-size", no_class
,
5453 set_memory_read_packet_size
,
5454 "Set the maximum number of bytes per memory-read packet.\n"
5455 "Specify the number of bytes in a packet or 0 (zero) for the\n"
5456 "default packet size. The actual limit is further reduced\n"
5457 "dependent on the target. Specify ``fixed'' to disable the\n"
5458 "further restriction and ``limit'' to enable that restriction\n",
5459 &remote_set_cmdlist
);
5460 add_cmd ("memory-write-packet-size", no_class
,
5461 show_memory_write_packet_size
,
5462 "Show the maximum number of bytes per memory-write packet.\n",
5463 &remote_show_cmdlist
);
5464 add_cmd ("memory-read-packet-size", no_class
,
5465 show_memory_read_packet_size
,
5466 "Show the maximum number of bytes per memory-read packet.\n",
5467 &remote_show_cmdlist
);
5469 add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class
,
5470 &remote_hw_watchpoint_limit
, "\
5471 Set the maximum number of target hardware watchpoints.", "\
5472 Show the maximum number of target hardware watchpoints.", "\
5473 Specify a negative limit for unlimited.", "\
5474 The maximum number of target hardware watchpoints is %s.",
5476 &remote_set_cmdlist
, &remote_show_cmdlist
);
5477 add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class
,
5478 &remote_hw_breakpoint_limit
, "\
5479 Set the maximum number of target hardware breakpoints.", "\
5480 Show the maximum number of target hardware breakpoints.", "\
5481 Specify a negative limit for unlimited.", "\
5482 The maximum number of target hardware breakpoints is %s.",
5484 &remote_set_cmdlist
, &remote_show_cmdlist
);
5486 deprecated_add_show_from_set
5487 (add_set_cmd ("remoteaddresssize", class_obscure
,
5488 var_integer
, (char *) &remote_address_size
,
5489 "Set the maximum size of the address (in bits) \
5490 in a memory packet.\n",
5494 add_packet_config_cmd (&remote_protocol_binary_download
,
5495 "X", "binary-download",
5496 set_remote_protocol_binary_download_cmd
,
5497 show_remote_protocol_binary_download_cmd
,
5498 &remote_set_cmdlist
, &remote_show_cmdlist
,
5501 /* XXXX - should ``set remotebinarydownload'' be retained for
5503 deprecated_add_show_from_set
5504 (add_set_cmd ("remotebinarydownload", no_class
,
5505 var_boolean
, (char *) &remote_binary_download
,
5506 "Set binary downloads.\n", &setlist
),
5510 add_packet_config_cmd (&remote_protocol_vcont
,
5511 "vCont", "verbose-resume",
5512 set_remote_protocol_vcont_packet_cmd
,
5513 show_remote_protocol_vcont_packet_cmd
,
5514 &remote_set_cmdlist
, &remote_show_cmdlist
,
5517 add_packet_config_cmd (&remote_protocol_qSymbol
,
5518 "qSymbol", "symbol-lookup",
5519 set_remote_protocol_qSymbol_packet_cmd
,
5520 show_remote_protocol_qSymbol_packet_cmd
,
5521 &remote_set_cmdlist
, &remote_show_cmdlist
,
5524 add_packet_config_cmd (&remote_protocol_P
,
5525 "P", "set-register",
5526 set_remote_protocol_P_packet_cmd
,
5527 show_remote_protocol_P_packet_cmd
,
5528 &remote_set_cmdlist
, &remote_show_cmdlist
,
5531 add_packet_config_cmd (&remote_protocol_Z
[Z_PACKET_SOFTWARE_BP
],
5532 "Z0", "software-breakpoint",
5533 set_remote_protocol_Z_software_bp_packet_cmd
,
5534 show_remote_protocol_Z_software_bp_packet_cmd
,
5535 &remote_set_cmdlist
, &remote_show_cmdlist
,
5538 add_packet_config_cmd (&remote_protocol_Z
[Z_PACKET_HARDWARE_BP
],
5539 "Z1", "hardware-breakpoint",
5540 set_remote_protocol_Z_hardware_bp_packet_cmd
,
5541 show_remote_protocol_Z_hardware_bp_packet_cmd
,
5542 &remote_set_cmdlist
, &remote_show_cmdlist
,
5545 add_packet_config_cmd (&remote_protocol_Z
[Z_PACKET_WRITE_WP
],
5546 "Z2", "write-watchpoint",
5547 set_remote_protocol_Z_write_wp_packet_cmd
,
5548 show_remote_protocol_Z_write_wp_packet_cmd
,
5549 &remote_set_cmdlist
, &remote_show_cmdlist
,
5552 add_packet_config_cmd (&remote_protocol_Z
[Z_PACKET_READ_WP
],
5553 "Z3", "read-watchpoint",
5554 set_remote_protocol_Z_read_wp_packet_cmd
,
5555 show_remote_protocol_Z_read_wp_packet_cmd
,
5556 &remote_set_cmdlist
, &remote_show_cmdlist
,
5559 add_packet_config_cmd (&remote_protocol_Z
[Z_PACKET_ACCESS_WP
],
5560 "Z4", "access-watchpoint",
5561 set_remote_protocol_Z_access_wp_packet_cmd
,
5562 show_remote_protocol_Z_access_wp_packet_cmd
,
5563 &remote_set_cmdlist
, &remote_show_cmdlist
,
5566 add_packet_config_cmd (&remote_protocol_qPart_auxv
,
5567 "qPart_auxv", "read-aux-vector",
5568 set_remote_protocol_qPart_auxv_packet_cmd
,
5569 show_remote_protocol_qPart_auxv_packet_cmd
,
5570 &remote_set_cmdlist
, &remote_show_cmdlist
,
5573 /* Keep the old ``set remote Z-packet ...'' working. */
5574 add_setshow_auto_boolean_cmd ("Z-packet", class_obscure
,
5575 &remote_Z_packet_detect
, "\
5576 Set use of remote protocol `Z' packets", "\
5577 Show use of remote protocol `Z' packets ", "\
5578 When set, GDB will attempt to use the remote breakpoint and watchpoint\n\
5580 Use of remote protocol `Z' packets is %s",
5581 set_remote_protocol_Z_packet_cmd
,
5582 show_remote_protocol_Z_packet_cmd
,
5583 &remote_set_cmdlist
, &remote_show_cmdlist
);
5585 /* Eventually initialize fileio. See fileio.c */
5586 initialize_remote_fileio (remote_set_cmdlist
, remote_show_cmdlist
);