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 Free Software Foundation, Inc.
6 This file is part of GDB.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 59 Temple Place - Suite 330,
21 Boston, MA 02111-1307, USA. */
23 /* See the GDB User Guide for details of the GDB remote protocol. */
26 #include "gdb_string.h"
33 /*#include "terminal.h" */
36 #include "gdb-stabs.h"
37 #include "gdbthread.h"
41 #include "gdb_assert.h"
46 #include <sys/types.h>
49 #include "event-loop.h"
50 #include "event-top.h"
56 #include "gdbcore.h" /* for exec_bfd */
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 int remote_write_bytes (CORE_ADDR memaddr
, char *myaddr
, int len
);
72 static int remote_read_bytes (CORE_ADDR memaddr
, char *myaddr
, int len
);
74 static void remote_files_info (struct target_ops
*ignore
);
76 static int remote_xfer_memory (CORE_ADDR memaddr
, char *myaddr
,
77 int len
, int should_write
,
78 struct mem_attrib
*attrib
,
79 struct target_ops
*target
);
81 static void remote_prepare_to_store (void);
83 static void remote_fetch_registers (int regno
);
85 static void remote_resume (ptid_t ptid
, int step
,
86 enum target_signal siggnal
);
87 static void remote_async_resume (ptid_t ptid
, int step
,
88 enum target_signal siggnal
);
89 static int remote_start_remote (struct ui_out
*uiout
, void *dummy
);
91 static void remote_open (char *name
, int from_tty
);
92 static void remote_async_open (char *name
, int from_tty
);
94 static void extended_remote_open (char *name
, int from_tty
);
95 static void extended_remote_async_open (char *name
, int from_tty
);
97 static void remote_open_1 (char *, int, struct target_ops
*, int extended_p
,
100 static void remote_close (int quitting
);
102 static void remote_store_registers (int regno
);
104 static void remote_mourn (void);
105 static void remote_async_mourn (void);
107 static void extended_remote_restart (void);
109 static void extended_remote_mourn (void);
111 static void extended_remote_create_inferior (char *, char *, char **);
112 static void extended_remote_async_create_inferior (char *, char *, char **);
114 static void remote_mourn_1 (struct target_ops
*);
116 static void remote_send (char *buf
, long sizeof_buf
);
118 static int readchar (int timeout
);
120 static ptid_t
remote_wait (ptid_t ptid
,
121 struct target_waitstatus
*status
);
122 static ptid_t
remote_async_wait (ptid_t ptid
,
123 struct target_waitstatus
*status
);
125 static void remote_kill (void);
126 static void remote_async_kill (void);
128 static int tohex (int nib
);
130 static void remote_detach (char *args
, int from_tty
);
131 static void remote_async_detach (char *args
, int from_tty
);
133 static void remote_interrupt (int signo
);
135 static void remote_interrupt_twice (int signo
);
137 static void interrupt_query (void);
139 static void set_thread (int, int);
141 static int remote_thread_alive (ptid_t
);
143 static void get_offsets (void);
145 static long read_frame (char *buf
, long sizeof_buf
);
147 static int remote_insert_breakpoint (CORE_ADDR
, char *);
149 static int remote_remove_breakpoint (CORE_ADDR
, char *);
151 static int hexnumlen (ULONGEST num
);
153 static void init_remote_ops (void);
155 static void init_extended_remote_ops (void);
157 static void init_remote_cisco_ops (void);
159 static struct target_ops remote_cisco_ops
;
161 static void remote_stop (void);
163 static int ishex (int ch
, int *val
);
165 static int stubhex (int ch
);
167 static int remote_query (int /*char */ , char *, char *, int *);
169 static int hexnumstr (char *, ULONGEST
);
171 static int hexnumnstr (char *, ULONGEST
, int);
173 static CORE_ADDR
remote_address_masked (CORE_ADDR
);
175 static void print_packet (char *);
177 static unsigned long crc32 (unsigned char *, int, unsigned int);
179 static void compare_sections_command (char *, int);
181 static void packet_command (char *, int);
183 static int stub_unpack_int (char *buff
, int fieldlength
);
185 static ptid_t
remote_current_thread (ptid_t oldptid
);
187 static void remote_find_new_threads (void);
189 static void record_currthread (int currthread
);
191 static int fromhex (int a
);
193 static int hex2bin (const char *hex
, char *bin
, int count
);
195 static int bin2hex (const char *bin
, char *hex
, int count
);
197 static int putpkt_binary (char *buf
, int cnt
);
199 static void check_binary_download (CORE_ADDR addr
);
201 struct packet_config
;
203 static void show_packet_config_cmd (struct packet_config
*config
);
205 static void update_packet_config (struct packet_config
*config
);
207 void _initialize_remote (void);
209 /* Description of the remote protocol. Strictly speaking, when the
210 target is open()ed, remote.c should create a per-target description
211 of the remote protocol using that target's architecture.
212 Unfortunatly, the target stack doesn't include local state. For
213 the moment keep the information in the target's architecture
218 long offset
; /* Offset into G packet. */
219 long regnum
; /* GDB's internal register number. */
220 LONGEST pnum
; /* Remote protocol register number. */
221 int in_g_packet
; /* Always part of G packet. */
222 /* long size in bytes; == REGISTER_RAW_SIZE (regnum); at present. */
223 /* char *name; == REGISTER_NAME (regnum); at present. */
228 /* Description of the remote protocol registers. */
229 long sizeof_g_packet
;
231 /* Description of the remote protocol registers indexed by REGNUM
232 (making an array of NUM_REGS + NUM_PSEUDO_REGS in size). */
233 struct packet_reg
*regs
;
235 /* This is the size (in chars) of the first response to the ``g''
236 packet. It is used as a heuristic when determining the maximum
237 size of memory-read and memory-write packets. A target will
238 typically only reserve a buffer large enough to hold the ``g''
239 packet. The size does not include packet overhead (headers and
241 long actual_register_packet_size
;
243 /* This is the maximum size (in chars) of a non read/write packet.
244 It is also used as a cap on the size of read/write packets. */
245 long remote_packet_size
;
249 /* Handle for retreving the remote protocol data from gdbarch. */
250 static struct gdbarch_data
*remote_gdbarch_data_handle
;
252 static struct remote_state
*
253 get_remote_state (void)
255 return gdbarch_data (current_gdbarch
, remote_gdbarch_data_handle
);
259 init_remote_state (struct gdbarch
*gdbarch
)
262 struct remote_state
*rs
= xmalloc (sizeof (struct remote_state
));
264 if (DEPRECATED_REGISTER_BYTES
!= 0)
265 rs
->sizeof_g_packet
= DEPRECATED_REGISTER_BYTES
;
267 rs
->sizeof_g_packet
= 0;
269 /* Assume a 1:1 regnum<->pnum table. */
270 rs
->regs
= xcalloc (NUM_REGS
+ NUM_PSEUDO_REGS
, sizeof (struct packet_reg
));
271 for (regnum
= 0; regnum
< NUM_REGS
+ NUM_PSEUDO_REGS
; regnum
++)
273 struct packet_reg
*r
= &rs
->regs
[regnum
];
276 r
->offset
= REGISTER_BYTE (regnum
);
277 r
->in_g_packet
= (regnum
< NUM_REGS
);
278 /* ...name = REGISTER_NAME (regnum); */
280 /* Compute packet size by accumulating the size of all registers. */
281 if (DEPRECATED_REGISTER_BYTES
== 0)
282 rs
->sizeof_g_packet
+= register_size (current_gdbarch
, regnum
);
285 /* Default maximum number of characters in a packet body. Many
286 remote stubs have a hardwired buffer size of 400 bytes
287 (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used
288 as the maximum packet-size to ensure that the packet and an extra
289 NUL character can always fit in the buffer. This stops GDB
290 trashing stubs that try to squeeze an extra NUL into what is
291 already a full buffer (As of 1999-12-04 that was most stubs. */
292 rs
->remote_packet_size
= 400 - 1;
294 /* Should rs->sizeof_g_packet needs more space than the
295 default, adjust the size accordingly. Remember that each byte is
296 encoded as two characters. 32 is the overhead for the packet
297 header / footer. NOTE: cagney/1999-10-26: I suspect that 8
298 (``$NN:G...#NN'') is a better guess, the below has been padded a
300 if (rs
->sizeof_g_packet
> ((rs
->remote_packet_size
- 32) / 2))
301 rs
->remote_packet_size
= (rs
->sizeof_g_packet
* 2 + 32);
303 /* This one is filled in when a ``g'' packet is received. */
304 rs
->actual_register_packet_size
= 0;
310 free_remote_state (struct gdbarch
*gdbarch
, void *pointer
)
312 struct remote_state
*data
= pointer
;
317 static struct packet_reg
*
318 packet_reg_from_regnum (struct remote_state
*rs
, long regnum
)
320 if (regnum
< 0 && regnum
>= NUM_REGS
+ NUM_PSEUDO_REGS
)
324 struct packet_reg
*r
= &rs
->regs
[regnum
];
325 gdb_assert (r
->regnum
== regnum
);
330 static struct packet_reg
*
331 packet_reg_from_pnum (struct remote_state
*rs
, LONGEST pnum
)
334 for (i
= 0; i
< NUM_REGS
+ NUM_PSEUDO_REGS
; i
++)
336 struct packet_reg
*r
= &rs
->regs
[i
];
343 /* FIXME: graces/2002-08-08: These variables should eventually be
344 bound to an instance of the target object (as in gdbarch-tdep()),
345 when such a thing exists. */
347 /* This is set to the data address of the access causing the target
348 to stop for a watchpoint. */
349 static CORE_ADDR remote_watch_data_address
;
351 /* This is non-zero if taregt stopped for a watchpoint. */
352 static int remote_stopped_by_watchpoint_p
;
355 static struct target_ops remote_ops
;
357 static struct target_ops extended_remote_ops
;
359 /* Temporary target ops. Just like the remote_ops and
360 extended_remote_ops, but with asynchronous support. */
361 static struct target_ops remote_async_ops
;
363 static struct target_ops extended_async_remote_ops
;
365 /* FIXME: cagney/1999-09-23: Even though getpkt was called with
366 ``forever'' still use the normal timeout mechanism. This is
367 currently used by the ASYNC code to guarentee that target reads
368 during the initial connect always time-out. Once getpkt has been
369 modified to return a timeout indication and, in turn
370 remote_wait()/wait_for_inferior() have gained a timeout parameter
372 static int wait_forever_enabled_p
= 1;
375 /* This variable chooses whether to send a ^C or a break when the user
376 requests program interruption. Although ^C is usually what remote
377 systems expect, and that is the default here, sometimes a break is
378 preferable instead. */
380 static int remote_break
;
382 /* Descriptor for I/O to remote machine. Initialize it to NULL so that
383 remote_open knows that we don't have a file open when the program
385 static struct serial
*remote_desc
= NULL
;
387 /* This is set by the target (thru the 'S' message)
388 to denote that the target is in kernel mode. */
389 static int cisco_kernel_mode
= 0;
391 /* This variable sets the number of bits in an address that are to be
392 sent in a memory ("M" or "m") packet. Normally, after stripping
393 leading zeros, the entire address would be sent. This variable
394 restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The
395 initial implementation of remote.c restricted the address sent in
396 memory packets to ``host::sizeof long'' bytes - (typically 32
397 bits). Consequently, for 64 bit targets, the upper 32 bits of an
398 address was never sent. Since fixing this bug may cause a break in
399 some remote targets this variable is principly provided to
400 facilitate backward compatibility. */
402 static int remote_address_size
;
404 /* Tempoary to track who currently owns the terminal. See
405 target_async_terminal_* for more details. */
407 static int remote_async_terminal_ours_p
;
410 /* User configurable variables for the number of characters in a
411 memory read/write packet. MIN ((rs->remote_packet_size),
412 rs->sizeof_g_packet) is the default. Some targets need smaller
413 values (fifo overruns, et.al.) and some users need larger values
414 (speed up transfers). The variables ``preferred_*'' (the user
415 request), ``current_*'' (what was actually set) and ``forced_*''
416 (Positive - a soft limit, negative - a hard limit). */
418 struct memory_packet_config
425 /* Compute the current size of a read/write packet. Since this makes
426 use of ``actual_register_packet_size'' the computation is dynamic. */
429 get_memory_packet_size (struct memory_packet_config
*config
)
431 struct remote_state
*rs
= get_remote_state ();
432 /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk
433 law?) that some hosts don't cope very well with large alloca()
434 calls. Eventually the alloca() code will be replaced by calls to
435 xmalloc() and make_cleanups() allowing this restriction to either
436 be lifted or removed. */
437 #ifndef MAX_REMOTE_PACKET_SIZE
438 #define MAX_REMOTE_PACKET_SIZE 16384
440 /* NOTE: 16 is just chosen at random. */
441 #ifndef MIN_REMOTE_PACKET_SIZE
442 #define MIN_REMOTE_PACKET_SIZE 16
447 if (config
->size
<= 0)
448 what_they_get
= MAX_REMOTE_PACKET_SIZE
;
450 what_they_get
= config
->size
;
454 what_they_get
= (rs
->remote_packet_size
);
455 /* Limit the packet to the size specified by the user. */
457 && what_they_get
> config
->size
)
458 what_they_get
= config
->size
;
459 /* Limit it to the size of the targets ``g'' response. */
460 if ((rs
->actual_register_packet_size
) > 0
461 && what_they_get
> (rs
->actual_register_packet_size
))
462 what_they_get
= (rs
->actual_register_packet_size
);
464 if (what_they_get
> MAX_REMOTE_PACKET_SIZE
)
465 what_they_get
= MAX_REMOTE_PACKET_SIZE
;
466 if (what_they_get
< MIN_REMOTE_PACKET_SIZE
)
467 what_they_get
= MIN_REMOTE_PACKET_SIZE
;
468 return what_they_get
;
471 /* Update the size of a read/write packet. If they user wants
472 something really big then do a sanity check. */
475 set_memory_packet_size (char *args
, struct memory_packet_config
*config
)
477 int fixed_p
= config
->fixed_p
;
478 long size
= config
->size
;
480 error ("Argument required (integer, `fixed' or `limited').");
481 else if (strcmp (args
, "hard") == 0
482 || strcmp (args
, "fixed") == 0)
484 else if (strcmp (args
, "soft") == 0
485 || strcmp (args
, "limit") == 0)
490 size
= strtoul (args
, &end
, 0);
492 error ("Invalid %s (bad syntax).", config
->name
);
494 /* Instead of explicitly capping the size of a packet to
495 MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is
496 instead allowed to set the size to something arbitrarily
498 if (size
> MAX_REMOTE_PACKET_SIZE
)
499 error ("Invalid %s (too large).", config
->name
);
503 if (fixed_p
&& !config
->fixed_p
)
505 if (! query ("The target may not be able to correctly handle a %s\n"
506 "of %ld bytes. Change the packet size? ",
508 error ("Packet size not changed.");
510 /* Update the config. */
511 config
->fixed_p
= fixed_p
;
516 show_memory_packet_size (struct memory_packet_config
*config
)
518 printf_filtered ("The %s is %ld. ", config
->name
, config
->size
);
520 printf_filtered ("Packets are fixed at %ld bytes.\n",
521 get_memory_packet_size (config
));
523 printf_filtered ("Packets are limited to %ld bytes.\n",
524 get_memory_packet_size (config
));
527 static struct memory_packet_config memory_write_packet_config
=
529 "memory-write-packet-size",
533 set_memory_write_packet_size (char *args
, int from_tty
)
535 set_memory_packet_size (args
, &memory_write_packet_config
);
539 show_memory_write_packet_size (char *args
, int from_tty
)
541 show_memory_packet_size (&memory_write_packet_config
);
545 get_memory_write_packet_size (void)
547 return get_memory_packet_size (&memory_write_packet_config
);
550 static struct memory_packet_config memory_read_packet_config
=
552 "memory-read-packet-size",
556 set_memory_read_packet_size (char *args
, int from_tty
)
558 set_memory_packet_size (args
, &memory_read_packet_config
);
562 show_memory_read_packet_size (char *args
, int from_tty
)
564 show_memory_packet_size (&memory_read_packet_config
);
568 get_memory_read_packet_size (void)
570 struct remote_state
*rs
= get_remote_state ();
571 long size
= get_memory_packet_size (&memory_read_packet_config
);
572 /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an
573 extra buffer size argument before the memory read size can be
574 increased beyond (rs->remote_packet_size). */
575 if (size
> (rs
->remote_packet_size
))
576 size
= (rs
->remote_packet_size
);
581 /* Generic configuration support for packets the stub optionally
582 supports. Allows the user to specify the use of the packet as well
583 as allowing GDB to auto-detect support in the remote stub. */
587 PACKET_SUPPORT_UNKNOWN
= 0,
596 enum auto_boolean detect
;
597 enum packet_support support
;
600 /* Analyze a packet's return value and update the packet config
611 update_packet_config (struct packet_config
*config
)
613 switch (config
->detect
)
615 case AUTO_BOOLEAN_TRUE
:
616 config
->support
= PACKET_ENABLE
;
618 case AUTO_BOOLEAN_FALSE
:
619 config
->support
= PACKET_DISABLE
;
621 case AUTO_BOOLEAN_AUTO
:
622 config
->support
= PACKET_SUPPORT_UNKNOWN
;
628 show_packet_config_cmd (struct packet_config
*config
)
630 char *support
= "internal-error";
631 switch (config
->support
)
637 support
= "disabled";
639 case PACKET_SUPPORT_UNKNOWN
:
643 switch (config
->detect
)
645 case AUTO_BOOLEAN_AUTO
:
646 printf_filtered ("Support for remote protocol `%s' (%s) packet is auto-detected, currently %s.\n",
647 config
->name
, config
->title
, support
);
649 case AUTO_BOOLEAN_TRUE
:
650 case AUTO_BOOLEAN_FALSE
:
651 printf_filtered ("Support for remote protocol `%s' (%s) packet is currently %s.\n",
652 config
->name
, config
->title
, support
);
658 add_packet_config_cmd (struct packet_config
*config
,
661 cmd_sfunc_ftype
*set_func
,
662 cmd_sfunc_ftype
*show_func
,
663 struct cmd_list_element
**set_remote_list
,
664 struct cmd_list_element
**show_remote_list
,
667 struct cmd_list_element
*set_cmd
;
668 struct cmd_list_element
*show_cmd
;
673 config
->title
= title
;
674 config
->detect
= AUTO_BOOLEAN_AUTO
;
675 config
->support
= PACKET_SUPPORT_UNKNOWN
;
676 xasprintf (&set_doc
, "Set use of remote protocol `%s' (%s) packet",
678 xasprintf (&show_doc
, "Show current use of remote protocol `%s' (%s) packet",
680 /* set/show TITLE-packet {auto,on,off} */
681 xasprintf (&cmd_name
, "%s-packet", title
);
682 add_setshow_auto_boolean_cmd (cmd_name
, class_obscure
,
683 &config
->detect
, set_doc
, show_doc
,
685 set_remote_list
, show_remote_list
);
686 /* set/show remote NAME-packet {auto,on,off} -- legacy */
690 xasprintf (&legacy_name
, "%s-packet", name
);
691 add_alias_cmd (legacy_name
, cmd_name
, class_obscure
, 0,
693 add_alias_cmd (legacy_name
, cmd_name
, class_obscure
, 0,
698 static enum packet_result
699 packet_ok (const char *buf
, struct packet_config
*config
)
703 /* The stub recognized the packet request. Check that the
704 operation succeeded. */
705 switch (config
->support
)
707 case PACKET_SUPPORT_UNKNOWN
:
709 fprintf_unfiltered (gdb_stdlog
,
710 "Packet %s (%s) is supported\n",
711 config
->name
, config
->title
);
712 config
->support
= PACKET_ENABLE
;
715 internal_error (__FILE__
, __LINE__
,
716 "packet_ok: attempt to use a disabled packet");
721 if (buf
[0] == 'O' && buf
[1] == 'K' && buf
[2] == '\0')
722 /* "OK" - definitly OK. */
725 && isxdigit (buf
[1]) && isxdigit (buf
[2])
727 /* "Enn" - definitly an error. */
729 /* The packet may or may not be OK. Just assume it is */
734 /* The stub does not support the packet. */
735 switch (config
->support
)
738 if (config
->detect
== AUTO_BOOLEAN_AUTO
)
739 /* If the stub previously indicated that the packet was
740 supported then there is a protocol error.. */
741 error ("Protocol error: %s (%s) conflicting enabled responses.",
742 config
->name
, config
->title
);
744 /* The user set it wrong. */
745 error ("Enabled packet %s (%s) not recognized by stub",
746 config
->name
, config
->title
);
748 case PACKET_SUPPORT_UNKNOWN
:
750 fprintf_unfiltered (gdb_stdlog
,
751 "Packet %s (%s) is NOT supported\n",
752 config
->name
, config
->title
);
753 config
->support
= PACKET_DISABLE
;
758 return PACKET_UNKNOWN
;
762 /* Should we try the 'qSymbol' (target symbol lookup service) request? */
763 static struct packet_config remote_protocol_qSymbol
;
766 set_remote_protocol_qSymbol_packet_cmd (char *args
, int from_tty
,
767 struct cmd_list_element
*c
)
769 update_packet_config (&remote_protocol_qSymbol
);
773 show_remote_protocol_qSymbol_packet_cmd (char *args
, int from_tty
,
774 struct cmd_list_element
*c
)
776 show_packet_config_cmd (&remote_protocol_qSymbol
);
779 /* Should we try the 'e' (step over range) request? */
780 static struct packet_config remote_protocol_e
;
783 set_remote_protocol_e_packet_cmd (char *args
, int from_tty
,
784 struct cmd_list_element
*c
)
786 update_packet_config (&remote_protocol_e
);
790 show_remote_protocol_e_packet_cmd (char *args
, int from_tty
,
791 struct cmd_list_element
*c
)
793 show_packet_config_cmd (&remote_protocol_e
);
797 /* Should we try the 'E' (step over range / w signal #) request? */
798 static struct packet_config remote_protocol_E
;
801 set_remote_protocol_E_packet_cmd (char *args
, int from_tty
,
802 struct cmd_list_element
*c
)
804 update_packet_config (&remote_protocol_E
);
808 show_remote_protocol_E_packet_cmd (char *args
, int from_tty
,
809 struct cmd_list_element
*c
)
811 show_packet_config_cmd (&remote_protocol_E
);
815 /* Should we try the 'P' (set register) request? */
817 static struct packet_config remote_protocol_P
;
820 set_remote_protocol_P_packet_cmd (char *args
, int from_tty
,
821 struct cmd_list_element
*c
)
823 update_packet_config (&remote_protocol_P
);
827 show_remote_protocol_P_packet_cmd (char *args
, int from_tty
,
828 struct cmd_list_element
*c
)
830 show_packet_config_cmd (&remote_protocol_P
);
833 /* Should we try one of the 'Z' requests? */
837 Z_PACKET_SOFTWARE_BP
,
838 Z_PACKET_HARDWARE_BP
,
845 static struct packet_config remote_protocol_Z
[NR_Z_PACKET_TYPES
];
847 /* FIXME: Instead of having all these boiler plate functions, the
848 command callback should include a context argument. */
851 set_remote_protocol_Z_software_bp_packet_cmd (char *args
, int from_tty
,
852 struct cmd_list_element
*c
)
854 update_packet_config (&remote_protocol_Z
[Z_PACKET_SOFTWARE_BP
]);
858 show_remote_protocol_Z_software_bp_packet_cmd (char *args
, int from_tty
,
859 struct cmd_list_element
*c
)
861 show_packet_config_cmd (&remote_protocol_Z
[Z_PACKET_SOFTWARE_BP
]);
865 set_remote_protocol_Z_hardware_bp_packet_cmd (char *args
, int from_tty
,
866 struct cmd_list_element
*c
)
868 update_packet_config (&remote_protocol_Z
[Z_PACKET_HARDWARE_BP
]);
872 show_remote_protocol_Z_hardware_bp_packet_cmd (char *args
, int from_tty
,
873 struct cmd_list_element
*c
)
875 show_packet_config_cmd (&remote_protocol_Z
[Z_PACKET_HARDWARE_BP
]);
879 set_remote_protocol_Z_write_wp_packet_cmd (char *args
, int from_tty
,
880 struct cmd_list_element
*c
)
882 update_packet_config (&remote_protocol_Z
[Z_PACKET_WRITE_WP
]);
886 show_remote_protocol_Z_write_wp_packet_cmd (char *args
, int from_tty
,
887 struct cmd_list_element
*c
)
889 show_packet_config_cmd (&remote_protocol_Z
[Z_PACKET_WRITE_WP
]);
893 set_remote_protocol_Z_read_wp_packet_cmd (char *args
, int from_tty
,
894 struct cmd_list_element
*c
)
896 update_packet_config (&remote_protocol_Z
[Z_PACKET_READ_WP
]);
900 show_remote_protocol_Z_read_wp_packet_cmd (char *args
, int from_tty
,
901 struct cmd_list_element
*c
)
903 show_packet_config_cmd (&remote_protocol_Z
[Z_PACKET_READ_WP
]);
907 set_remote_protocol_Z_access_wp_packet_cmd (char *args
, int from_tty
,
908 struct cmd_list_element
*c
)
910 update_packet_config (&remote_protocol_Z
[Z_PACKET_ACCESS_WP
]);
914 show_remote_protocol_Z_access_wp_packet_cmd (char *args
, int from_tty
,
915 struct cmd_list_element
*c
)
917 show_packet_config_cmd (&remote_protocol_Z
[Z_PACKET_ACCESS_WP
]);
920 /* For compatibility with older distributions. Provide a ``set remote
921 Z-packet ...'' command that updates all the Z packet types. */
923 static enum auto_boolean remote_Z_packet_detect
;
926 set_remote_protocol_Z_packet_cmd (char *args
, int from_tty
,
927 struct cmd_list_element
*c
)
930 for (i
= 0; i
< NR_Z_PACKET_TYPES
; i
++)
932 remote_protocol_Z
[i
].detect
= remote_Z_packet_detect
;
933 update_packet_config (&remote_protocol_Z
[i
]);
938 show_remote_protocol_Z_packet_cmd (char *args
, int from_tty
,
939 struct cmd_list_element
*c
)
942 for (i
= 0; i
< NR_Z_PACKET_TYPES
; i
++)
944 show_packet_config_cmd (&remote_protocol_Z
[i
]);
948 /* Should we try the 'X' (remote binary download) packet?
950 This variable (available to the user via "set remote X-packet")
951 dictates whether downloads are sent in binary (via the 'X' packet).
952 We assume that the stub can, and attempt to do it. This will be
953 cleared if the stub does not understand it. This switch is still
954 needed, though in cases when the packet is supported in the stub,
955 but the connection does not allow it (i.e., 7-bit serial connection
958 static struct packet_config remote_protocol_binary_download
;
960 /* Should we try the 'ThreadInfo' query packet?
962 This variable (NOT available to the user: auto-detect only!)
963 determines whether GDB will use the new, simpler "ThreadInfo"
964 query or the older, more complex syntax for thread queries.
965 This is an auto-detect variable (set to true at each connect,
966 and set to false when the target fails to recognize it). */
968 static int use_threadinfo_query
;
969 static int use_threadextra_query
;
972 set_remote_protocol_binary_download_cmd (char *args
,
974 struct cmd_list_element
*c
)
976 update_packet_config (&remote_protocol_binary_download
);
980 show_remote_protocol_binary_download_cmd (char *args
, int from_tty
,
981 struct cmd_list_element
*c
)
983 show_packet_config_cmd (&remote_protocol_binary_download
);
987 /* Tokens for use by the asynchronous signal handlers for SIGINT */
988 static void *sigint_remote_twice_token
;
989 static void *sigint_remote_token
;
991 /* These are pointers to hook functions that may be set in order to
992 modify resume/wait behavior for a particular architecture. */
994 void (*target_resume_hook
) (void);
995 void (*target_wait_loop_hook
) (void);
999 /* These are the threads which we last sent to the remote system.
1000 -1 for all or -2 for not sent yet. */
1001 static int general_thread
;
1002 static int continue_thread
;
1004 /* Call this function as a result of
1005 1) A halt indication (T packet) containing a thread id
1006 2) A direct query of currthread
1007 3) Successful execution of set thread
1011 record_currthread (int currthread
)
1013 general_thread
= currthread
;
1015 /* If this is a new thread, add it to GDB's thread list.
1016 If we leave it up to WFI to do this, bad things will happen. */
1017 if (!in_thread_list (pid_to_ptid (currthread
)))
1019 add_thread (pid_to_ptid (currthread
));
1020 ui_out_text (uiout
, "[New ");
1021 ui_out_text (uiout
, target_pid_to_str (pid_to_ptid (currthread
)));
1022 ui_out_text (uiout
, "]\n");
1026 #define MAGIC_NULL_PID 42000
1029 set_thread (int th
, int gen
)
1031 struct remote_state
*rs
= get_remote_state ();
1032 char *buf
= alloca (rs
->remote_packet_size
);
1033 int state
= gen
? general_thread
: continue_thread
;
1039 buf
[1] = gen
? 'g' : 'c';
1040 if (th
== MAGIC_NULL_PID
)
1046 sprintf (&buf
[2], "-%x", -th
);
1048 sprintf (&buf
[2], "%x", th
);
1050 getpkt (buf
, (rs
->remote_packet_size
), 0);
1052 general_thread
= th
;
1054 continue_thread
= th
;
1057 /* Return nonzero if the thread TH is still alive on the remote system. */
1060 remote_thread_alive (ptid_t ptid
)
1062 int tid
= PIDGET (ptid
);
1066 sprintf (buf
, "T-%08x", -tid
);
1068 sprintf (buf
, "T%08x", tid
);
1070 getpkt (buf
, sizeof (buf
), 0);
1071 return (buf
[0] == 'O' && buf
[1] == 'K');
1074 /* About these extended threadlist and threadinfo packets. They are
1075 variable length packets but, the fields within them are often fixed
1076 length. They are redundent enough to send over UDP as is the
1077 remote protocol in general. There is a matching unit test module
1080 #define OPAQUETHREADBYTES 8
1082 /* a 64 bit opaque identifier */
1083 typedef unsigned char threadref
[OPAQUETHREADBYTES
];
1085 /* WARNING: This threadref data structure comes from the remote O.S., libstub
1086 protocol encoding, and remote.c. it is not particularly changable */
1088 /* Right now, the internal structure is int. We want it to be bigger.
1092 typedef int gdb_threadref
; /* internal GDB thread reference */
1094 /* gdb_ext_thread_info is an internal GDB data structure which is
1095 equivalint to the reply of the remote threadinfo packet */
1097 struct gdb_ext_thread_info
1099 threadref threadid
; /* External form of thread reference */
1100 int active
; /* Has state interesting to GDB? , regs, stack */
1101 char display
[256]; /* Brief state display, name, blocked/syspended */
1102 char shortname
[32]; /* To be used to name threads */
1103 char more_display
[256]; /* Long info, statistics, queue depth, whatever */
1106 /* The volume of remote transfers can be limited by submitting
1107 a mask containing bits specifying the desired information.
1108 Use a union of these values as the 'selection' parameter to
1109 get_thread_info. FIXME: Make these TAG names more thread specific.
1112 #define TAG_THREADID 1
1113 #define TAG_EXISTS 2
1114 #define TAG_DISPLAY 4
1115 #define TAG_THREADNAME 8
1116 #define TAG_MOREDISPLAY 16
1118 #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES*2)
1120 char *unpack_varlen_hex (char *buff
, ULONGEST
*result
);
1122 static char *unpack_nibble (char *buf
, int *val
);
1124 static char *pack_nibble (char *buf
, int nibble
);
1126 static char *pack_hex_byte (char *pkt
, int /*unsigned char */ byte
);
1128 static char *unpack_byte (char *buf
, int *value
);
1130 static char *pack_int (char *buf
, int value
);
1132 static char *unpack_int (char *buf
, int *value
);
1134 static char *unpack_string (char *src
, char *dest
, int length
);
1136 static char *pack_threadid (char *pkt
, threadref
* id
);
1138 static char *unpack_threadid (char *inbuf
, threadref
* id
);
1140 void int_to_threadref (threadref
* id
, int value
);
1142 static int threadref_to_int (threadref
* ref
);
1144 static void copy_threadref (threadref
* dest
, threadref
* src
);
1146 static int threadmatch (threadref
* dest
, threadref
* src
);
1148 static char *pack_threadinfo_request (char *pkt
, int mode
, threadref
* id
);
1150 static int remote_unpack_thread_info_response (char *pkt
,
1151 threadref
* expectedref
,
1152 struct gdb_ext_thread_info
1156 static int remote_get_threadinfo (threadref
* threadid
, int fieldset
, /*TAG mask */
1157 struct gdb_ext_thread_info
*info
);
1159 static int adapt_remote_get_threadinfo (gdb_threadref
* ref
,
1161 struct gdb_ext_thread_info
*info
);
1163 static char *pack_threadlist_request (char *pkt
, int startflag
,
1165 threadref
* nextthread
);
1167 static int parse_threadlist_response (char *pkt
,
1169 threadref
* original_echo
,
1170 threadref
* resultlist
, int *doneflag
);
1172 static int remote_get_threadlist (int startflag
,
1173 threadref
* nextthread
,
1176 int *result_count
, threadref
* threadlist
);
1178 typedef int (*rmt_thread_action
) (threadref
* ref
, void *context
);
1180 static int remote_threadlist_iterator (rmt_thread_action stepfunction
,
1181 void *context
, int looplimit
);
1183 static int remote_newthread_step (threadref
* ref
, void *context
);
1185 /* encode 64 bits in 16 chars of hex */
1187 static const char hexchars
[] = "0123456789abcdef";
1190 ishex (int ch
, int *val
)
1192 if ((ch
>= 'a') && (ch
<= 'f'))
1194 *val
= ch
- 'a' + 10;
1197 if ((ch
>= 'A') && (ch
<= 'F'))
1199 *val
= ch
- 'A' + 10;
1202 if ((ch
>= '0') && (ch
<= '9'))
1213 if (ch
>= 'a' && ch
<= 'f')
1214 return ch
- 'a' + 10;
1215 if (ch
>= '0' && ch
<= '9')
1217 if (ch
>= 'A' && ch
<= 'F')
1218 return ch
- 'A' + 10;
1223 stub_unpack_int (char *buff
, int fieldlength
)
1230 nibble
= stubhex (*buff
++);
1234 retval
= retval
<< 4;
1240 unpack_varlen_hex (char *buff
, /* packet to parse */
1246 while (ishex (*buff
, &nibble
))
1249 retval
= retval
<< 4;
1250 retval
|= nibble
& 0x0f;
1257 unpack_nibble (char *buf
, int *val
)
1259 ishex (*buf
++, val
);
1264 pack_nibble (char *buf
, int nibble
)
1266 *buf
++ = hexchars
[(nibble
& 0x0f)];
1271 pack_hex_byte (char *pkt
, int byte
)
1273 *pkt
++ = hexchars
[(byte
>> 4) & 0xf];
1274 *pkt
++ = hexchars
[(byte
& 0xf)];
1279 unpack_byte (char *buf
, int *value
)
1281 *value
= stub_unpack_int (buf
, 2);
1286 pack_int (char *buf
, int value
)
1288 buf
= pack_hex_byte (buf
, (value
>> 24) & 0xff);
1289 buf
= pack_hex_byte (buf
, (value
>> 16) & 0xff);
1290 buf
= pack_hex_byte (buf
, (value
>> 8) & 0x0ff);
1291 buf
= pack_hex_byte (buf
, (value
& 0xff));
1296 unpack_int (char *buf
, int *value
)
1298 *value
= stub_unpack_int (buf
, 8);
1302 #if 0 /* currently unused, uncomment when needed */
1303 static char *pack_string (char *pkt
, char *string
);
1306 pack_string (char *pkt
, char *string
)
1311 len
= strlen (string
);
1313 len
= 200; /* Bigger than most GDB packets, junk??? */
1314 pkt
= pack_hex_byte (pkt
, len
);
1318 if ((ch
== '\0') || (ch
== '#'))
1319 ch
= '*'; /* Protect encapsulation */
1324 #endif /* 0 (unused) */
1327 unpack_string (char *src
, char *dest
, int length
)
1336 pack_threadid (char *pkt
, threadref
*id
)
1339 unsigned char *altid
;
1341 altid
= (unsigned char *) id
;
1342 limit
= pkt
+ BUF_THREAD_ID_SIZE
;
1344 pkt
= pack_hex_byte (pkt
, *altid
++);
1350 unpack_threadid (char *inbuf
, threadref
*id
)
1353 char *limit
= inbuf
+ BUF_THREAD_ID_SIZE
;
1356 altref
= (char *) id
;
1358 while (inbuf
< limit
)
1360 x
= stubhex (*inbuf
++);
1361 y
= stubhex (*inbuf
++);
1362 *altref
++ = (x
<< 4) | y
;
1367 /* Externally, threadrefs are 64 bits but internally, they are still
1368 ints. This is due to a mismatch of specifications. We would like
1369 to use 64bit thread references internally. This is an adapter
1373 int_to_threadref (threadref
*id
, int value
)
1375 unsigned char *scan
;
1377 scan
= (unsigned char *) id
;
1383 *scan
++ = (value
>> 24) & 0xff;
1384 *scan
++ = (value
>> 16) & 0xff;
1385 *scan
++ = (value
>> 8) & 0xff;
1386 *scan
++ = (value
& 0xff);
1390 threadref_to_int (threadref
*ref
)
1393 unsigned char *scan
;
1395 scan
= (char *) ref
;
1399 value
= (value
<< 8) | ((*scan
++) & 0xff);
1404 copy_threadref (threadref
*dest
, threadref
*src
)
1407 unsigned char *csrc
, *cdest
;
1409 csrc
= (unsigned char *) src
;
1410 cdest
= (unsigned char *) dest
;
1417 threadmatch (threadref
*dest
, threadref
*src
)
1419 /* things are broken right now, so just assume we got a match */
1421 unsigned char *srcp
, *destp
;
1423 srcp
= (char *) src
;
1424 destp
= (char *) dest
;
1428 result
&= (*srcp
++ == *destp
++) ? 1 : 0;
1435 threadid:1, # always request threadid
1442 /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */
1445 pack_threadinfo_request (char *pkt
, int mode
, threadref
*id
)
1447 *pkt
++ = 'q'; /* Info Query */
1448 *pkt
++ = 'P'; /* process or thread info */
1449 pkt
= pack_int (pkt
, mode
); /* mode */
1450 pkt
= pack_threadid (pkt
, id
); /* threadid */
1451 *pkt
= '\0'; /* terminate */
1455 /* These values tag the fields in a thread info response packet */
1456 /* Tagging the fields allows us to request specific fields and to
1457 add more fields as time goes by */
1459 #define TAG_THREADID 1 /* Echo the thread identifier */
1460 #define TAG_EXISTS 2 /* Is this process defined enough to
1461 fetch registers and its stack */
1462 #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */
1463 #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is */
1464 #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about
1468 remote_unpack_thread_info_response (char *pkt
, threadref
*expectedref
,
1469 struct gdb_ext_thread_info
*info
)
1471 struct remote_state
*rs
= get_remote_state ();
1475 char *limit
= pkt
+ (rs
->remote_packet_size
); /* plausable parsing limit */
1478 /* info->threadid = 0; FIXME: implement zero_threadref */
1480 info
->display
[0] = '\0';
1481 info
->shortname
[0] = '\0';
1482 info
->more_display
[0] = '\0';
1484 /* Assume the characters indicating the packet type have been stripped */
1485 pkt
= unpack_int (pkt
, &mask
); /* arg mask */
1486 pkt
= unpack_threadid (pkt
, &ref
);
1489 warning ("Incomplete response to threadinfo request\n");
1490 if (!threadmatch (&ref
, expectedref
))
1491 { /* This is an answer to a different request */
1492 warning ("ERROR RMT Thread info mismatch\n");
1495 copy_threadref (&info
->threadid
, &ref
);
1497 /* Loop on tagged fields , try to bail if somthing goes wrong */
1499 while ((pkt
< limit
) && mask
&& *pkt
) /* packets are terminated with nulls */
1501 pkt
= unpack_int (pkt
, &tag
); /* tag */
1502 pkt
= unpack_byte (pkt
, &length
); /* length */
1503 if (!(tag
& mask
)) /* tags out of synch with mask */
1505 warning ("ERROR RMT: threadinfo tag mismatch\n");
1509 if (tag
== TAG_THREADID
)
1513 warning ("ERROR RMT: length of threadid is not 16\n");
1517 pkt
= unpack_threadid (pkt
, &ref
);
1518 mask
= mask
& ~TAG_THREADID
;
1521 if (tag
== TAG_EXISTS
)
1523 info
->active
= stub_unpack_int (pkt
, length
);
1525 mask
= mask
& ~(TAG_EXISTS
);
1528 warning ("ERROR RMT: 'exists' length too long\n");
1534 if (tag
== TAG_THREADNAME
)
1536 pkt
= unpack_string (pkt
, &info
->shortname
[0], length
);
1537 mask
= mask
& ~TAG_THREADNAME
;
1540 if (tag
== TAG_DISPLAY
)
1542 pkt
= unpack_string (pkt
, &info
->display
[0], length
);
1543 mask
= mask
& ~TAG_DISPLAY
;
1546 if (tag
== TAG_MOREDISPLAY
)
1548 pkt
= unpack_string (pkt
, &info
->more_display
[0], length
);
1549 mask
= mask
& ~TAG_MOREDISPLAY
;
1552 warning ("ERROR RMT: unknown thread info tag\n");
1553 break; /* Not a tag we know about */
1559 remote_get_threadinfo (threadref
*threadid
, int fieldset
, /* TAG mask */
1560 struct gdb_ext_thread_info
*info
)
1562 struct remote_state
*rs
= get_remote_state ();
1564 char *threadinfo_pkt
= alloca (rs
->remote_packet_size
);
1566 pack_threadinfo_request (threadinfo_pkt
, fieldset
, threadid
);
1567 putpkt (threadinfo_pkt
);
1568 getpkt (threadinfo_pkt
, (rs
->remote_packet_size
), 0);
1569 result
= remote_unpack_thread_info_response (threadinfo_pkt
+ 2, threadid
,
1574 /* Unfortunately, 61 bit thread-ids are bigger than the internal
1575 representation of a threadid. */
1578 adapt_remote_get_threadinfo (gdb_threadref
*ref
, int selection
,
1579 struct gdb_ext_thread_info
*info
)
1583 int_to_threadref (&lclref
, *ref
);
1584 return remote_get_threadinfo (&lclref
, selection
, info
);
1587 /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */
1590 pack_threadlist_request (char *pkt
, int startflag
, int threadcount
,
1591 threadref
*nextthread
)
1593 *pkt
++ = 'q'; /* info query packet */
1594 *pkt
++ = 'L'; /* Process LIST or threadLIST request */
1595 pkt
= pack_nibble (pkt
, startflag
); /* initflag 1 bytes */
1596 pkt
= pack_hex_byte (pkt
, threadcount
); /* threadcount 2 bytes */
1597 pkt
= pack_threadid (pkt
, nextthread
); /* 64 bit thread identifier */
1602 /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */
1605 parse_threadlist_response (char *pkt
, int result_limit
,
1606 threadref
*original_echo
, threadref
*resultlist
,
1609 struct remote_state
*rs
= get_remote_state ();
1611 int count
, resultcount
, done
;
1614 /* Assume the 'q' and 'M chars have been stripped. */
1615 limit
= pkt
+ ((rs
->remote_packet_size
) - BUF_THREAD_ID_SIZE
); /* done parse past here */
1616 pkt
= unpack_byte (pkt
, &count
); /* count field */
1617 pkt
= unpack_nibble (pkt
, &done
);
1618 /* The first threadid is the argument threadid. */
1619 pkt
= unpack_threadid (pkt
, original_echo
); /* should match query packet */
1620 while ((count
-- > 0) && (pkt
< limit
))
1622 pkt
= unpack_threadid (pkt
, resultlist
++);
1623 if (resultcount
++ >= result_limit
)
1632 remote_get_threadlist (int startflag
, threadref
*nextthread
, int result_limit
,
1633 int *done
, int *result_count
, threadref
*threadlist
)
1635 struct remote_state
*rs
= get_remote_state ();
1636 static threadref echo_nextthread
;
1637 char *threadlist_packet
= alloca (rs
->remote_packet_size
);
1638 char *t_response
= alloca (rs
->remote_packet_size
);
1641 /* Trancate result limit to be smaller than the packet size */
1642 if ((((result_limit
+ 1) * BUF_THREAD_ID_SIZE
) + 10) >= (rs
->remote_packet_size
))
1643 result_limit
= ((rs
->remote_packet_size
) / BUF_THREAD_ID_SIZE
) - 2;
1645 pack_threadlist_request (threadlist_packet
,
1646 startflag
, result_limit
, nextthread
);
1647 putpkt (threadlist_packet
);
1648 getpkt (t_response
, (rs
->remote_packet_size
), 0);
1651 parse_threadlist_response (t_response
+ 2, result_limit
, &echo_nextthread
,
1654 if (!threadmatch (&echo_nextthread
, nextthread
))
1656 /* FIXME: This is a good reason to drop the packet */
1657 /* Possably, there is a duplicate response */
1659 retransmit immediatly - race conditions
1660 retransmit after timeout - yes
1662 wait for packet, then exit
1664 warning ("HMM: threadlist did not echo arg thread, dropping it\n");
1665 return 0; /* I choose simply exiting */
1667 if (*result_count
<= 0)
1671 warning ("RMT ERROR : failed to get remote thread list\n");
1674 return result
; /* break; */
1676 if (*result_count
> result_limit
)
1679 warning ("RMT ERROR: threadlist response longer than requested\n");
1685 /* This is the interface between remote and threads, remotes upper interface */
1687 /* remote_find_new_threads retrieves the thread list and for each
1688 thread in the list, looks up the thread in GDB's internal list,
1689 ading the thread if it does not already exist. This involves
1690 getting partial thread lists from the remote target so, polling the
1691 quit_flag is required. */
1694 /* About this many threadisds fit in a packet. */
1696 #define MAXTHREADLISTRESULTS 32
1699 remote_threadlist_iterator (rmt_thread_action stepfunction
, void *context
,
1702 int done
, i
, result_count
;
1706 static threadref nextthread
;
1707 static threadref resultthreadlist
[MAXTHREADLISTRESULTS
];
1712 if (loopcount
++ > looplimit
)
1715 warning ("Remote fetch threadlist -infinite loop-\n");
1718 if (!remote_get_threadlist (startflag
, &nextthread
, MAXTHREADLISTRESULTS
,
1719 &done
, &result_count
, resultthreadlist
))
1724 /* clear for later iterations */
1726 /* Setup to resume next batch of thread references, set nextthread. */
1727 if (result_count
>= 1)
1728 copy_threadref (&nextthread
, &resultthreadlist
[result_count
- 1]);
1730 while (result_count
--)
1731 if (!(result
= (*stepfunction
) (&resultthreadlist
[i
++], context
)))
1738 remote_newthread_step (threadref
*ref
, void *context
)
1742 ptid
= pid_to_ptid (threadref_to_int (ref
));
1744 if (!in_thread_list (ptid
))
1746 return 1; /* continue iterator */
1749 #define CRAZY_MAX_THREADS 1000
1752 remote_current_thread (ptid_t oldpid
)
1754 struct remote_state
*rs
= get_remote_state ();
1755 char *buf
= alloca (rs
->remote_packet_size
);
1758 getpkt (buf
, (rs
->remote_packet_size
), 0);
1759 if (buf
[0] == 'Q' && buf
[1] == 'C')
1760 return pid_to_ptid (strtol (&buf
[2], NULL
, 16));
1765 /* Find new threads for info threads command.
1766 * Original version, using John Metzler's thread protocol.
1770 remote_find_new_threads (void)
1772 remote_threadlist_iterator (remote_newthread_step
, 0,
1774 if (PIDGET (inferior_ptid
) == MAGIC_NULL_PID
) /* ack ack ack */
1775 inferior_ptid
= remote_current_thread (inferior_ptid
);
1779 * Find all threads for info threads command.
1780 * Uses new thread protocol contributed by Cisco.
1781 * Falls back and attempts to use the older method (above)
1782 * if the target doesn't respond to the new method.
1786 remote_threads_info (void)
1788 struct remote_state
*rs
= get_remote_state ();
1789 char *buf
= alloca (rs
->remote_packet_size
);
1793 if (remote_desc
== 0) /* paranoia */
1794 error ("Command can only be used when connected to the remote target.");
1796 if (use_threadinfo_query
)
1798 putpkt ("qfThreadInfo");
1800 getpkt (bufp
, (rs
->remote_packet_size
), 0);
1801 if (bufp
[0] != '\0') /* q packet recognized */
1803 while (*bufp
++ == 'm') /* reply contains one or more TID */
1807 tid
= strtol (bufp
, &bufp
, 16);
1808 if (tid
!= 0 && !in_thread_list (pid_to_ptid (tid
)))
1809 add_thread (pid_to_ptid (tid
));
1811 while (*bufp
++ == ','); /* comma-separated list */
1812 putpkt ("qsThreadInfo");
1814 getpkt (bufp
, (rs
->remote_packet_size
), 0);
1820 /* Else fall back to old method based on jmetzler protocol. */
1821 use_threadinfo_query
= 0;
1822 remote_find_new_threads ();
1827 * Collect a descriptive string about the given thread.
1828 * The target may say anything it wants to about the thread
1829 * (typically info about its blocked / runnable state, name, etc.).
1830 * This string will appear in the info threads display.
1832 * Optional: targets are not required to implement this function.
1836 remote_threads_extra_info (struct thread_info
*tp
)
1838 struct remote_state
*rs
= get_remote_state ();
1842 struct gdb_ext_thread_info threadinfo
;
1843 static char display_buf
[100]; /* arbitrary... */
1844 char *bufp
= alloca (rs
->remote_packet_size
);
1845 int n
= 0; /* position in display_buf */
1847 if (remote_desc
== 0) /* paranoia */
1848 internal_error (__FILE__
, __LINE__
,
1849 "remote_threads_extra_info");
1851 if (use_threadextra_query
)
1853 sprintf (bufp
, "qThreadExtraInfo,%x", PIDGET (tp
->ptid
));
1855 getpkt (bufp
, (rs
->remote_packet_size
), 0);
1858 n
= min (strlen (bufp
) / 2, sizeof (display_buf
));
1859 result
= hex2bin (bufp
, display_buf
, n
);
1860 display_buf
[result
] = '\0';
1865 /* If the above query fails, fall back to the old method. */
1866 use_threadextra_query
= 0;
1867 set
= TAG_THREADID
| TAG_EXISTS
| TAG_THREADNAME
1868 | TAG_MOREDISPLAY
| TAG_DISPLAY
;
1869 int_to_threadref (&id
, PIDGET (tp
->ptid
));
1870 if (remote_get_threadinfo (&id
, set
, &threadinfo
))
1871 if (threadinfo
.active
)
1873 if (*threadinfo
.shortname
)
1874 n
+= sprintf(&display_buf
[0], " Name: %s,", threadinfo
.shortname
);
1875 if (*threadinfo
.display
)
1876 n
+= sprintf(&display_buf
[n
], " State: %s,", threadinfo
.display
);
1877 if (*threadinfo
.more_display
)
1878 n
+= sprintf(&display_buf
[n
], " Priority: %s",
1879 threadinfo
.more_display
);
1883 /* for purely cosmetic reasons, clear up trailing commas */
1884 if (',' == display_buf
[n
-1])
1885 display_buf
[n
-1] = ' ';
1894 /* Restart the remote side; this is an extended protocol operation. */
1897 extended_remote_restart (void)
1899 struct remote_state
*rs
= get_remote_state ();
1900 char *buf
= alloca (rs
->remote_packet_size
);
1902 /* Send the restart command; for reasons I don't understand the
1903 remote side really expects a number after the "R". */
1905 sprintf (&buf
[1], "%x", 0);
1908 /* Now query for status so this looks just like we restarted
1909 gdbserver from scratch. */
1911 getpkt (buf
, (rs
->remote_packet_size
), 0);
1914 /* Clean up connection to a remote debugger. */
1918 remote_close (int quitting
)
1921 serial_close (remote_desc
);
1925 /* Query the remote side for the text, data and bss offsets. */
1930 struct remote_state
*rs
= get_remote_state ();
1931 char *buf
= alloca (rs
->remote_packet_size
);
1934 CORE_ADDR text_addr
, data_addr
, bss_addr
;
1935 struct section_offsets
*offs
;
1937 putpkt ("qOffsets");
1939 getpkt (buf
, (rs
->remote_packet_size
), 0);
1941 if (buf
[0] == '\000')
1942 return; /* Return silently. Stub doesn't support
1946 warning ("Remote failure reply: %s", buf
);
1950 /* Pick up each field in turn. This used to be done with scanf, but
1951 scanf will make trouble if CORE_ADDR size doesn't match
1952 conversion directives correctly. The following code will work
1953 with any size of CORE_ADDR. */
1954 text_addr
= data_addr
= bss_addr
= 0;
1958 if (strncmp (ptr
, "Text=", 5) == 0)
1961 /* Don't use strtol, could lose on big values. */
1962 while (*ptr
&& *ptr
!= ';')
1963 text_addr
= (text_addr
<< 4) + fromhex (*ptr
++);
1968 if (!lose
&& strncmp (ptr
, ";Data=", 6) == 0)
1971 while (*ptr
&& *ptr
!= ';')
1972 data_addr
= (data_addr
<< 4) + fromhex (*ptr
++);
1977 if (!lose
&& strncmp (ptr
, ";Bss=", 5) == 0)
1980 while (*ptr
&& *ptr
!= ';')
1981 bss_addr
= (bss_addr
<< 4) + fromhex (*ptr
++);
1987 error ("Malformed response to offset query, %s", buf
);
1989 if (symfile_objfile
== NULL
)
1992 offs
= ((struct section_offsets
*)
1993 alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
)));
1994 memcpy (offs
, symfile_objfile
->section_offsets
,
1995 SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
));
1997 offs
->offsets
[SECT_OFF_TEXT (symfile_objfile
)] = text_addr
;
1999 /* This is a temporary kludge to force data and bss to use the same offsets
2000 because that's what nlmconv does now. The real solution requires changes
2001 to the stub and remote.c that I don't have time to do right now. */
2003 offs
->offsets
[SECT_OFF_DATA (symfile_objfile
)] = data_addr
;
2004 offs
->offsets
[SECT_OFF_BSS (symfile_objfile
)] = data_addr
;
2006 objfile_relocate (symfile_objfile
, offs
);
2010 * Cisco version of section offsets:
2012 * Instead of having GDB query the target for the section offsets,
2013 * Cisco lets the target volunteer the information! It's also in
2014 * a different format, so here are the functions that will decode
2015 * a section offset packet from a Cisco target.
2019 * Function: remote_cisco_section_offsets
2021 * Returns: zero for success, non-zero for failure
2025 remote_cisco_section_offsets (bfd_vma text_addr
,
2028 bfd_signed_vma
*text_offs
,
2029 bfd_signed_vma
*data_offs
,
2030 bfd_signed_vma
*bss_offs
)
2032 bfd_vma text_base
, data_base
, bss_base
;
2033 struct minimal_symbol
*start
;
2038 if (symfile_objfile
== NULL
)
2039 return -1; /* no can do nothin' */
2041 start
= lookup_minimal_symbol ("_start", NULL
, NULL
);
2043 return -1; /* Can't find "_start" symbol */
2045 data_base
= bss_base
= 0;
2046 text_base
= SYMBOL_VALUE_ADDRESS (start
);
2048 abfd
= symfile_objfile
->obfd
;
2049 for (sect
= abfd
->sections
;
2053 const char *p
= bfd_get_section_name (abfd
, sect
);
2055 if (strcmp (p
+ len
- 4, "data") == 0) /* ends in "data" */
2056 if (data_base
== 0 ||
2057 data_base
> bfd_get_section_vma (abfd
, sect
))
2058 data_base
= bfd_get_section_vma (abfd
, sect
);
2059 if (strcmp (p
+ len
- 3, "bss") == 0) /* ends in "bss" */
2060 if (bss_base
== 0 ||
2061 bss_base
> bfd_get_section_vma (abfd
, sect
))
2062 bss_base
= bfd_get_section_vma (abfd
, sect
);
2064 *text_offs
= text_addr
- text_base
;
2065 *data_offs
= data_addr
- data_base
;
2066 *bss_offs
= bss_addr
- bss_base
;
2071 sprintf (tmp
, "VMA: text = 0x");
2072 sprintf_vma (tmp
+ strlen (tmp
), text_addr
);
2073 sprintf (tmp
+ strlen (tmp
), " data = 0x");
2074 sprintf_vma (tmp
+ strlen (tmp
), data_addr
);
2075 sprintf (tmp
+ strlen (tmp
), " bss = 0x");
2076 sprintf_vma (tmp
+ strlen (tmp
), bss_addr
);
2077 fprintf_filtered (gdb_stdlog
, tmp
);
2078 fprintf_filtered (gdb_stdlog
,
2079 "Reloc offset: text = 0x%s data = 0x%s bss = 0x%s\n",
2080 paddr_nz (*text_offs
),
2081 paddr_nz (*data_offs
),
2082 paddr_nz (*bss_offs
));
2089 * Function: remote_cisco_objfile_relocate
2091 * Relocate the symbol file for a remote target.
2095 remote_cisco_objfile_relocate (bfd_signed_vma text_off
, bfd_signed_vma data_off
,
2096 bfd_signed_vma bss_off
)
2098 struct section_offsets
*offs
;
2100 if (text_off
!= 0 || data_off
!= 0 || bss_off
!= 0)
2102 /* FIXME: This code assumes gdb-stabs.h is being used; it's
2103 broken for xcoff, dwarf, sdb-coff, etc. But there is no
2104 simple canonical representation for this stuff. */
2106 offs
= (struct section_offsets
*)
2107 alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
));
2108 memcpy (offs
, symfile_objfile
->section_offsets
,
2109 SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
));
2111 offs
->offsets
[SECT_OFF_TEXT (symfile_objfile
)] = text_off
;
2112 offs
->offsets
[SECT_OFF_DATA (symfile_objfile
)] = data_off
;
2113 offs
->offsets
[SECT_OFF_BSS (symfile_objfile
)] = bss_off
;
2115 /* First call the standard objfile_relocate. */
2116 objfile_relocate (symfile_objfile
, offs
);
2118 /* Now we need to fix up the section entries already attached to
2119 the exec target. These entries will control memory transfers
2120 from the exec file. */
2122 exec_set_section_offsets (text_off
, data_off
, bss_off
);
2126 /* Stub for catch_errors. */
2129 remote_start_remote_dummy (struct ui_out
*uiout
, void *dummy
)
2131 start_remote (); /* Initialize gdb process mechanisms */
2132 /* NOTE: Return something >=0. A -ve value is reserved for
2133 catch_exceptions. */
2138 remote_start_remote (struct ui_out
*uiout
, void *dummy
)
2140 immediate_quit
++; /* Allow user to interrupt it */
2142 /* Ack any packet which the remote side has already sent. */
2143 serial_write (remote_desc
, "+", 1);
2145 /* Let the stub know that we want it to return the thread. */
2148 inferior_ptid
= remote_current_thread (inferior_ptid
);
2150 get_offsets (); /* Get text, data & bss offsets */
2152 putpkt ("?"); /* initiate a query from remote machine */
2155 /* NOTE: See comment above in remote_start_remote_dummy(). This
2156 function returns something >=0. */
2157 return remote_start_remote_dummy (uiout
, dummy
);
2160 /* Open a connection to a remote debugger.
2161 NAME is the filename used for communication. */
2164 remote_open (char *name
, int from_tty
)
2166 remote_open_1 (name
, from_tty
, &remote_ops
, 0, 0);
2169 /* Just like remote_open, but with asynchronous support. */
2171 remote_async_open (char *name
, int from_tty
)
2173 remote_open_1 (name
, from_tty
, &remote_async_ops
, 0, 1);
2176 /* Open a connection to a remote debugger using the extended
2177 remote gdb protocol. NAME is the filename used for communication. */
2180 extended_remote_open (char *name
, int from_tty
)
2182 remote_open_1 (name
, from_tty
, &extended_remote_ops
, 1 /*extended_p */,
2186 /* Just like extended_remote_open, but with asynchronous support. */
2188 extended_remote_async_open (char *name
, int from_tty
)
2190 remote_open_1 (name
, from_tty
, &extended_async_remote_ops
,
2191 1 /*extended_p */, 1 /* async_p */);
2194 /* Generic code for opening a connection to a remote target. */
2197 init_all_packet_configs (void)
2200 update_packet_config (&remote_protocol_e
);
2201 update_packet_config (&remote_protocol_E
);
2202 update_packet_config (&remote_protocol_P
);
2203 update_packet_config (&remote_protocol_qSymbol
);
2204 for (i
= 0; i
< NR_Z_PACKET_TYPES
; i
++)
2205 update_packet_config (&remote_protocol_Z
[i
]);
2206 /* Force remote_write_bytes to check whether target supports binary
2208 update_packet_config (&remote_protocol_binary_download
);
2211 /* Symbol look-up. */
2214 remote_check_symbols (struct objfile
*objfile
)
2216 struct remote_state
*rs
= get_remote_state ();
2217 char *msg
, *reply
, *tmp
;
2218 struct minimal_symbol
*sym
;
2221 if (remote_protocol_qSymbol
.support
== PACKET_DISABLE
)
2224 msg
= alloca (rs
->remote_packet_size
);
2225 reply
= alloca (rs
->remote_packet_size
);
2227 /* Invite target to request symbol lookups. */
2229 putpkt ("qSymbol::");
2230 getpkt (reply
, (rs
->remote_packet_size
), 0);
2231 packet_ok (reply
, &remote_protocol_qSymbol
);
2233 while (strncmp (reply
, "qSymbol:", 8) == 0)
2236 end
= hex2bin (tmp
, msg
, strlen (tmp
) / 2);
2238 sym
= lookup_minimal_symbol (msg
, NULL
, NULL
);
2240 sprintf (msg
, "qSymbol::%s", &reply
[8]);
2242 sprintf (msg
, "qSymbol:%s:%s",
2243 paddr_nz (SYMBOL_VALUE_ADDRESS (sym
)),
2246 getpkt (reply
, (rs
->remote_packet_size
), 0);
2250 static struct serial
*
2251 remote_serial_open (char *name
)
2253 static int udp_warning
= 0;
2255 /* FIXME: Parsing NAME here is a hack. But we want to warn here instead
2256 of in ser-tcp.c, because it is the remote protocol assuming that the
2257 serial connection is reliable and not the serial connection promising
2259 if (!udp_warning
&& strncmp (name
, "udp:", 4) == 0)
2261 warning ("The remote protocol may be unreliable over UDP.");
2262 warning ("Some events may be lost, rendering further debugging "
2267 return serial_open (name
);
2271 remote_open_1 (char *name
, int from_tty
, struct target_ops
*target
,
2272 int extended_p
, int async_p
)
2275 struct remote_state
*rs
= get_remote_state ();
2277 error ("To open a remote debug connection, you need to specify what\n"
2278 "serial device is attached to the remote system\n"
2279 "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).");
2281 /* See FIXME above */
2283 wait_forever_enabled_p
= 1;
2285 target_preopen (from_tty
);
2287 unpush_target (target
);
2289 remote_desc
= remote_serial_open (name
);
2291 perror_with_name (name
);
2293 if (baud_rate
!= -1)
2295 if (serial_setbaudrate (remote_desc
, baud_rate
))
2297 serial_close (remote_desc
);
2298 perror_with_name (name
);
2302 serial_raw (remote_desc
);
2304 /* If there is something sitting in the buffer we might take it as a
2305 response to a command, which would be bad. */
2306 serial_flush_input (remote_desc
);
2310 puts_filtered ("Remote debugging using ");
2311 puts_filtered (name
);
2312 puts_filtered ("\n");
2314 push_target (target
); /* Switch to using remote target now */
2316 init_all_packet_configs ();
2318 general_thread
= -2;
2319 continue_thread
= -2;
2321 /* Probe for ability to use "ThreadInfo" query, as required. */
2322 use_threadinfo_query
= 1;
2323 use_threadextra_query
= 1;
2325 /* Without this, some commands which require an active target (such
2326 as kill) won't work. This variable serves (at least) double duty
2327 as both the pid of the target process (if it has such), and as a
2328 flag indicating that a target is active. These functions should
2329 be split out into seperate variables, especially since GDB will
2330 someday have a notion of debugging several processes. */
2332 inferior_ptid
= pid_to_ptid (MAGIC_NULL_PID
);
2336 /* With this target we start out by owning the terminal. */
2337 remote_async_terminal_ours_p
= 1;
2339 /* FIXME: cagney/1999-09-23: During the initial connection it is
2340 assumed that the target is already ready and able to respond to
2341 requests. Unfortunately remote_start_remote() eventually calls
2342 wait_for_inferior() with no timeout. wait_forever_enabled_p gets
2343 around this. Eventually a mechanism that allows
2344 wait_for_inferior() to expect/get timeouts will be
2346 wait_forever_enabled_p
= 0;
2349 #ifdef SOLIB_CREATE_INFERIOR_HOOK
2350 /* First delete any symbols previously loaded from shared libraries. */
2351 no_shared_libraries (NULL
, 0);
2354 /* Start the remote connection. If error() or QUIT, discard this
2355 target (we'd otherwise be in an inconsistent state) and then
2356 propogate the error on up the exception chain. This ensures that
2357 the caller doesn't stumble along blindly assuming that the
2358 function succeeded. The CLI doesn't have this problem but other
2359 UI's, such as MI do.
2361 FIXME: cagney/2002-05-19: Instead of re-throwing the exception,
2362 this function should return an error indication letting the
2363 caller restore the previous state. Unfortunatly the command
2364 ``target remote'' is directly wired to this function making that
2365 impossible. On a positive note, the CLI side of this problem has
2366 been fixed - the function set_cmd_context() makes it possible for
2367 all the ``target ....'' commands to share a common callback
2368 function. See cli-dump.c. */
2369 ex
= catch_exceptions (uiout
,
2370 remote_start_remote
, NULL
,
2371 "Couldn't establish connection to remote"
2378 wait_forever_enabled_p
= 1;
2379 throw_exception (ex
);
2383 wait_forever_enabled_p
= 1;
2387 /* Tell the remote that we are using the extended protocol. */
2388 char *buf
= alloca (rs
->remote_packet_size
);
2390 getpkt (buf
, (rs
->remote_packet_size
), 0);
2392 #ifdef SOLIB_CREATE_INFERIOR_HOOK
2393 /* FIXME: need a master target_open vector from which all
2394 remote_opens can be called, so that stuff like this can
2395 go there. Failing that, the following code must be copied
2396 to the open function for any remote target that wants to
2397 support svr4 shared libraries. */
2399 /* Set up to detect and load shared libraries. */
2400 if (exec_bfd
) /* No use without an exec file. */
2402 SOLIB_CREATE_INFERIOR_HOOK (PIDGET (inferior_ptid
));
2403 remote_check_symbols (symfile_objfile
);
2408 /* This takes a program previously attached to and detaches it. After
2409 this is done, GDB can be used to debug some other program. We
2410 better not have left any breakpoints in the target program or it'll
2411 die when it hits one. */
2414 remote_detach (char *args
, int from_tty
)
2416 struct remote_state
*rs
= get_remote_state ();
2417 char *buf
= alloca (rs
->remote_packet_size
);
2420 error ("Argument given to \"detach\" when remotely debugging.");
2422 /* Tell the remote target to detach. */
2424 remote_send (buf
, (rs
->remote_packet_size
));
2426 target_mourn_inferior ();
2428 puts_filtered ("Ending remote debugging.\n");
2432 /* Same as remote_detach, but with async support. */
2434 remote_async_detach (char *args
, int from_tty
)
2436 struct remote_state
*rs
= get_remote_state ();
2437 char *buf
= alloca (rs
->remote_packet_size
);
2440 error ("Argument given to \"detach\" when remotely debugging.");
2442 /* Tell the remote target to detach. */
2444 remote_send (buf
, (rs
->remote_packet_size
));
2446 /* Unregister the file descriptor from the event loop. */
2447 if (target_is_async_p ())
2448 serial_async (remote_desc
, NULL
, 0);
2450 target_mourn_inferior ();
2452 puts_filtered ("Ending remote debugging.\n");
2455 /* Convert hex digit A to a number. */
2460 if (a
>= '0' && a
<= '9')
2462 else if (a
>= 'a' && a
<= 'f')
2463 return a
- 'a' + 10;
2464 else if (a
>= 'A' && a
<= 'F')
2465 return a
- 'A' + 10;
2467 error ("Reply contains invalid hex digit %d", a
);
2471 hex2bin (const char *hex
, char *bin
, int count
)
2475 for (i
= 0; i
< count
; i
++)
2477 if (hex
[0] == 0 || hex
[1] == 0)
2479 /* Hex string is short, or of uneven length.
2480 Return the count that has been converted so far. */
2483 *bin
++ = fromhex (hex
[0]) * 16 + fromhex (hex
[1]);
2489 /* Convert number NIB to a hex digit. */
2497 return 'a' + nib
- 10;
2501 bin2hex (const char *bin
, char *hex
, int count
)
2504 /* May use a length, or a nul-terminated string as input. */
2506 count
= strlen (bin
);
2508 for (i
= 0; i
< count
; i
++)
2510 *hex
++ = tohex ((*bin
>> 4) & 0xf);
2511 *hex
++ = tohex (*bin
++ & 0xf);
2517 /* Tell the remote machine to resume. */
2519 static enum target_signal last_sent_signal
= TARGET_SIGNAL_0
;
2521 static int last_sent_step
;
2524 remote_resume (ptid_t ptid
, int step
, enum target_signal siggnal
)
2526 struct remote_state
*rs
= get_remote_state ();
2527 char *buf
= alloca (rs
->remote_packet_size
);
2528 int pid
= PIDGET (ptid
);
2532 set_thread (0, 0); /* run any thread */
2534 set_thread (pid
, 0); /* run this thread */
2536 last_sent_signal
= siggnal
;
2537 last_sent_step
= step
;
2539 /* A hook for when we need to do something at the last moment before
2541 if (target_resume_hook
)
2542 (*target_resume_hook
) ();
2545 /* The s/S/c/C packets do not return status. So if the target does
2546 not support the S or C packets, the debug agent returns an empty
2547 string which is detected in remote_wait(). This protocol defect
2548 is fixed in the e/E packets. */
2550 if (step
&& step_range_end
)
2552 /* If the target does not support the 'E' packet, we try the 'S'
2553 packet. Ideally we would fall back to the 'e' packet if that
2554 too is not supported. But that would require another copy of
2555 the code to issue the 'e' packet (and fall back to 's' if not
2556 supported) in remote_wait(). */
2558 if (siggnal
!= TARGET_SIGNAL_0
)
2560 if (remote_protocol_E
.support
!= PACKET_DISABLE
)
2564 *p
++ = tohex (((int) siggnal
>> 4) & 0xf);
2565 *p
++ = tohex (((int) siggnal
) & 0xf);
2567 p
+= hexnumstr (p
, (ULONGEST
) step_range_start
);
2569 p
+= hexnumstr (p
, (ULONGEST
) step_range_end
);
2573 getpkt (buf
, (rs
->remote_packet_size
), 0);
2575 if (packet_ok (buf
, &remote_protocol_E
) == PACKET_OK
)
2581 if (remote_protocol_e
.support
!= PACKET_DISABLE
)
2585 p
+= hexnumstr (p
, (ULONGEST
) step_range_start
);
2587 p
+= hexnumstr (p
, (ULONGEST
) step_range_end
);
2591 getpkt (buf
, (rs
->remote_packet_size
), 0);
2593 if (packet_ok (buf
, &remote_protocol_e
) == PACKET_OK
)
2599 if (siggnal
!= TARGET_SIGNAL_0
)
2601 buf
[0] = step
? 'S' : 'C';
2602 buf
[1] = tohex (((int) siggnal
>> 4) & 0xf);
2603 buf
[2] = tohex (((int) siggnal
) & 0xf);
2607 strcpy (buf
, step
? "s" : "c");
2612 /* Same as remote_resume, but with async support. */
2614 remote_async_resume (ptid_t ptid
, int step
, enum target_signal siggnal
)
2616 struct remote_state
*rs
= get_remote_state ();
2617 char *buf
= alloca (rs
->remote_packet_size
);
2618 int pid
= PIDGET (ptid
);
2622 set_thread (0, 0); /* run any thread */
2624 set_thread (pid
, 0); /* run this thread */
2626 last_sent_signal
= siggnal
;
2627 last_sent_step
= step
;
2629 /* A hook for when we need to do something at the last moment before
2631 if (target_resume_hook
)
2632 (*target_resume_hook
) ();
2634 /* The s/S/c/C packets do not return status. So if the target does
2635 not support the S or C packets, the debug agent returns an empty
2636 string which is detected in remote_wait(). This protocol defect
2637 is fixed in the e/E packets. */
2639 if (step
&& step_range_end
)
2641 /* If the target does not support the 'E' packet, we try the 'S'
2642 packet. Ideally we would fall back to the 'e' packet if that
2643 too is not supported. But that would require another copy of
2644 the code to issue the 'e' packet (and fall back to 's' if not
2645 supported) in remote_wait(). */
2647 if (siggnal
!= TARGET_SIGNAL_0
)
2649 if (remote_protocol_E
.support
!= PACKET_DISABLE
)
2653 *p
++ = tohex (((int) siggnal
>> 4) & 0xf);
2654 *p
++ = tohex (((int) siggnal
) & 0xf);
2656 p
+= hexnumstr (p
, (ULONGEST
) step_range_start
);
2658 p
+= hexnumstr (p
, (ULONGEST
) step_range_end
);
2662 getpkt (buf
, (rs
->remote_packet_size
), 0);
2664 if (packet_ok (buf
, &remote_protocol_E
) == PACKET_OK
)
2665 goto register_event_loop
;
2670 if (remote_protocol_e
.support
!= PACKET_DISABLE
)
2674 p
+= hexnumstr (p
, (ULONGEST
) step_range_start
);
2676 p
+= hexnumstr (p
, (ULONGEST
) step_range_end
);
2680 getpkt (buf
, (rs
->remote_packet_size
), 0);
2682 if (packet_ok (buf
, &remote_protocol_e
) == PACKET_OK
)
2683 goto register_event_loop
;
2688 if (siggnal
!= TARGET_SIGNAL_0
)
2690 buf
[0] = step
? 'S' : 'C';
2691 buf
[1] = tohex (((int) siggnal
>> 4) & 0xf);
2692 buf
[2] = tohex ((int) siggnal
& 0xf);
2696 strcpy (buf
, step
? "s" : "c");
2700 register_event_loop
:
2701 /* We are about to start executing the inferior, let's register it
2702 with the event loop. NOTE: this is the one place where all the
2703 execution commands end up. We could alternatively do this in each
2704 of the execution commands in infcmd.c.*/
2705 /* FIXME: ezannoni 1999-09-28: We may need to move this out of here
2706 into infcmd.c in order to allow inferior function calls to work
2707 NOT asynchronously. */
2708 if (event_loop_p
&& target_can_async_p ())
2709 target_async (inferior_event_handler
, 0);
2710 /* Tell the world that the target is now executing. */
2711 /* FIXME: cagney/1999-09-23: Is it the targets responsibility to set
2712 this? Instead, should the client of target just assume (for
2713 async targets) that the target is going to start executing? Is
2714 this information already found in the continuation block? */
2715 if (target_is_async_p ())
2716 target_executing
= 1;
2720 /* Set up the signal handler for SIGINT, while the target is
2721 executing, ovewriting the 'regular' SIGINT signal handler. */
2723 initialize_sigint_signal_handler (void)
2725 sigint_remote_token
=
2726 create_async_signal_handler (async_remote_interrupt
, NULL
);
2727 signal (SIGINT
, handle_remote_sigint
);
2730 /* Signal handler for SIGINT, while the target is executing. */
2732 handle_remote_sigint (int sig
)
2734 signal (sig
, handle_remote_sigint_twice
);
2735 sigint_remote_twice_token
=
2736 create_async_signal_handler (async_remote_interrupt_twice
, NULL
);
2737 mark_async_signal_handler_wrapper (sigint_remote_token
);
2740 /* Signal handler for SIGINT, installed after SIGINT has already been
2741 sent once. It will take effect the second time that the user sends
2744 handle_remote_sigint_twice (int sig
)
2746 signal (sig
, handle_sigint
);
2747 sigint_remote_twice_token
=
2748 create_async_signal_handler (inferior_event_handler_wrapper
, NULL
);
2749 mark_async_signal_handler_wrapper (sigint_remote_twice_token
);
2752 /* Perform the real interruption of the target execution, in response
2755 async_remote_interrupt (gdb_client_data arg
)
2758 fprintf_unfiltered (gdb_stdlog
, "remote_interrupt called\n");
2763 /* Perform interrupt, if the first attempt did not succeed. Just give
2764 up on the target alltogether. */
2766 async_remote_interrupt_twice (gdb_client_data arg
)
2769 fprintf_unfiltered (gdb_stdlog
, "remote_interrupt_twice called\n");
2770 /* Do something only if the target was not killed by the previous
2772 if (target_executing
)
2775 signal (SIGINT
, handle_remote_sigint
);
2779 /* Reinstall the usual SIGINT handlers, after the target has
2782 cleanup_sigint_signal_handler (void *dummy
)
2784 signal (SIGINT
, handle_sigint
);
2785 if (sigint_remote_twice_token
)
2786 delete_async_signal_handler ((struct async_signal_handler
**) & sigint_remote_twice_token
);
2787 if (sigint_remote_token
)
2788 delete_async_signal_handler ((struct async_signal_handler
**) & sigint_remote_token
);
2791 /* Send ^C to target to halt it. Target will respond, and send us a
2793 static void (*ofunc
) (int);
2795 /* The command line interface's stop routine. This function is installed
2796 as a signal handler for SIGINT. The first time a user requests a
2797 stop, we call remote_stop to send a break or ^C. If there is no
2798 response from the target (it didn't stop when the user requested it),
2799 we ask the user if he'd like to detach from the target. */
2801 remote_interrupt (int signo
)
2803 /* If this doesn't work, try more severe steps. */
2804 signal (signo
, remote_interrupt_twice
);
2807 fprintf_unfiltered (gdb_stdlog
, "remote_interrupt called\n");
2812 /* The user typed ^C twice. */
2815 remote_interrupt_twice (int signo
)
2817 signal (signo
, ofunc
);
2819 signal (signo
, remote_interrupt
);
2822 /* This is the generic stop called via the target vector. When a target
2823 interrupt is requested, either by the command line or the GUI, we
2824 will eventually end up here. */
2828 /* Send a break or a ^C, depending on user preference. */
2830 fprintf_unfiltered (gdb_stdlog
, "remote_stop called\n");
2833 serial_send_break (remote_desc
);
2835 serial_write (remote_desc
, "\003", 1);
2838 /* Ask the user what to do when an interrupt is received. */
2841 interrupt_query (void)
2843 target_terminal_ours ();
2845 if (query ("Interrupted while waiting for the program.\n\
2846 Give up (and stop debugging it)? "))
2848 target_mourn_inferior ();
2849 throw_exception (RETURN_QUIT
);
2852 target_terminal_inferior ();
2855 /* Enable/disable target terminal ownership. Most targets can use
2856 terminal groups to control terminal ownership. Remote targets are
2857 different in that explicit transfer of ownership to/from GDB/target
2861 remote_async_terminal_inferior (void)
2863 /* FIXME: cagney/1999-09-27: Shouldn't need to test for
2864 sync_execution here. This function should only be called when
2865 GDB is resuming the inferior in the forground. A background
2866 resume (``run&'') should leave GDB in control of the terminal and
2867 consequently should not call this code. */
2868 if (!sync_execution
)
2870 /* FIXME: cagney/1999-09-27: Closely related to the above. Make
2871 calls target_terminal_*() idenpotent. The event-loop GDB talking
2872 to an asynchronous target with a synchronous command calls this
2873 function from both event-top.c and infrun.c/infcmd.c. Once GDB
2874 stops trying to transfer the terminal to the target when it
2875 shouldn't this guard can go away. */
2876 if (!remote_async_terminal_ours_p
)
2878 delete_file_handler (input_fd
);
2879 remote_async_terminal_ours_p
= 0;
2880 initialize_sigint_signal_handler ();
2881 /* NOTE: At this point we could also register our selves as the
2882 recipient of all input. Any characters typed could then be
2883 passed on down to the target. */
2887 remote_async_terminal_ours (void)
2889 /* See FIXME in remote_async_terminal_inferior. */
2890 if (!sync_execution
)
2892 /* See FIXME in remote_async_terminal_inferior. */
2893 if (remote_async_terminal_ours_p
)
2895 cleanup_sigint_signal_handler (NULL
);
2896 add_file_handler (input_fd
, stdin_event_handler
, 0);
2897 remote_async_terminal_ours_p
= 1;
2900 /* If nonzero, ignore the next kill. */
2905 remote_console_output (char *msg
)
2909 for (p
= msg
; p
[0] && p
[1]; p
+= 2)
2912 char c
= fromhex (p
[0]) * 16 + fromhex (p
[1]);
2915 fputs_unfiltered (tb
, gdb_stdtarg
);
2917 gdb_flush (gdb_stdtarg
);
2920 /* Wait until the remote machine stops, then return,
2921 storing status in STATUS just as `wait' would.
2922 Returns "pid", which in the case of a multi-threaded
2923 remote OS, is the thread-id. */
2926 remote_wait (ptid_t ptid
, struct target_waitstatus
*status
)
2928 struct remote_state
*rs
= get_remote_state ();
2929 unsigned char *buf
= alloca (rs
->remote_packet_size
);
2930 ULONGEST thread_num
= -1;
2933 status
->kind
= TARGET_WAITKIND_EXITED
;
2934 status
->value
.integer
= 0;
2940 ofunc
= signal (SIGINT
, remote_interrupt
);
2941 getpkt (buf
, (rs
->remote_packet_size
), 1);
2942 signal (SIGINT
, ofunc
);
2944 /* This is a hook for when we need to do something (perhaps the
2945 collection of trace data) every time the target stops. */
2946 if (target_wait_loop_hook
)
2947 (*target_wait_loop_hook
) ();
2949 remote_stopped_by_watchpoint_p
= 0;
2953 case 'E': /* Error of some sort */
2954 warning ("Remote failure reply: %s", buf
);
2956 case 'T': /* Status with PC, SP, FP, ... */
2959 char regs
[MAX_REGISTER_SIZE
];
2961 /* Expedited reply, containing Signal, {regno, reg} repeat */
2962 /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where
2964 n... = register number
2965 r... = register contents
2967 p
= &buf
[3]; /* after Txx */
2976 /* If the packet contains a register number save it in pnum
2977 and set p1 to point to the character following it.
2978 Otherwise p1 points to p. */
2980 /* If this packet is an awatch packet, don't parse the 'a'
2981 as a register number. */
2983 if (strncmp (p
, "awatch", strlen("awatch")) != 0)
2985 /* Read the ``P'' register number. */
2986 pnum
= strtol (p
, &p_temp
, 16);
2987 p1
= (unsigned char *) p_temp
;
2992 if (p1
== p
) /* No register number present here */
2994 p1
= (unsigned char *) strchr (p
, ':');
2996 warning ("Malformed packet(a) (missing colon): %s\n\
2999 if (strncmp (p
, "thread", p1
- p
) == 0)
3001 p_temp
= unpack_varlen_hex (++p1
, &thread_num
);
3002 record_currthread (thread_num
);
3003 p
= (unsigned char *) p_temp
;
3005 else if ((strncmp (p
, "watch", p1
- p
) == 0)
3006 || (strncmp (p
, "rwatch", p1
- p
) == 0)
3007 || (strncmp (p
, "awatch", p1
- p
) == 0))
3009 remote_stopped_by_watchpoint_p
= 1;
3010 p
= unpack_varlen_hex (++p1
, &addr
);
3011 remote_watch_data_address
= (CORE_ADDR
)addr
;
3015 /* Silently skip unknown optional info. */
3016 p_temp
= strchr (p1
+ 1, ';');
3018 p
= (unsigned char *) p_temp
;
3023 struct packet_reg
*reg
= packet_reg_from_pnum (rs
, pnum
);
3027 warning ("Malformed packet(b) (missing colon): %s\n\
3032 warning ("Remote sent bad register number %s: %s\n\
3034 phex_nz (pnum
, 0), p
, buf
);
3036 fieldsize
= hex2bin (p
, regs
, REGISTER_RAW_SIZE (reg
->regnum
));
3038 if (fieldsize
< REGISTER_RAW_SIZE (reg
->regnum
))
3039 warning ("Remote reply is too short: %s", buf
);
3040 supply_register (reg
->regnum
, regs
);
3045 warning ("Remote register badly formatted: %s", buf
);
3046 warning (" here: %s", p
);
3051 case 'S': /* Old style status, just signal only */
3052 status
->kind
= TARGET_WAITKIND_STOPPED
;
3053 status
->value
.sig
= (enum target_signal
)
3054 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
3058 /* Export Cisco kernel mode as a convenience variable
3059 (so that it can be used in the GDB prompt if desired). */
3061 if (cisco_kernel_mode
== 1)
3062 set_internalvar (lookup_internalvar ("cisco_kernel_mode"),
3063 value_from_string ("PDEBUG-"));
3064 cisco_kernel_mode
= 0;
3065 thread_num
= strtol ((const char *) &buf
[4], NULL
, 16);
3066 record_currthread (thread_num
);
3068 else if (buf
[3] == 'k')
3070 /* Export Cisco kernel mode as a convenience variable
3071 (so that it can be used in the GDB prompt if desired). */
3073 if (cisco_kernel_mode
== 1)
3074 set_internalvar (lookup_internalvar ("cisco_kernel_mode"),
3075 value_from_string ("KDEBUG-"));
3076 cisco_kernel_mode
= 1;
3079 case 'N': /* Cisco special: status and offsets */
3081 bfd_vma text_addr
, data_addr
, bss_addr
;
3082 bfd_signed_vma text_off
, data_off
, bss_off
;
3085 status
->kind
= TARGET_WAITKIND_STOPPED
;
3086 status
->value
.sig
= (enum target_signal
)
3087 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
3089 if (symfile_objfile
== NULL
)
3091 warning ("Relocation packet received with no symbol file. \
3096 /* Relocate object file. Buffer format is NAATT;DD;BB
3097 * where AA is the signal number, TT is the new text
3098 * address, DD * is the new data address, and BB is the
3099 * new bss address. */
3102 text_addr
= strtoul (p
, (char **) &p1
, 16);
3103 if (p1
== p
|| *p1
!= ';')
3104 warning ("Malformed relocation packet: Packet '%s'", buf
);
3106 data_addr
= strtoul (p
, (char **) &p1
, 16);
3107 if (p1
== p
|| *p1
!= ';')
3108 warning ("Malformed relocation packet: Packet '%s'", buf
);
3110 bss_addr
= strtoul (p
, (char **) &p1
, 16);
3112 warning ("Malformed relocation packet: Packet '%s'", buf
);
3114 if (remote_cisco_section_offsets (text_addr
, data_addr
, bss_addr
,
3115 &text_off
, &data_off
, &bss_off
)
3117 if (text_off
!= 0 || data_off
!= 0 || bss_off
!= 0)
3118 remote_cisco_objfile_relocate (text_off
, data_off
, bss_off
);
3122 case 'W': /* Target exited */
3124 /* The remote process exited. */
3125 status
->kind
= TARGET_WAITKIND_EXITED
;
3126 status
->value
.integer
= (fromhex (buf
[1]) << 4) + fromhex (buf
[2]);
3130 status
->kind
= TARGET_WAITKIND_SIGNALLED
;
3131 status
->value
.sig
= (enum target_signal
)
3132 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
3136 case 'O': /* Console output */
3137 remote_console_output (buf
+ 1);
3140 if (last_sent_signal
!= TARGET_SIGNAL_0
)
3142 /* Zero length reply means that we tried 'S' or 'C' and
3143 the remote system doesn't support it. */
3144 target_terminal_ours_for_output ();
3146 ("Can't send signals to this remote system. %s not sent.\n",
3147 target_signal_to_name (last_sent_signal
));
3148 last_sent_signal
= TARGET_SIGNAL_0
;
3149 target_terminal_inferior ();
3151 strcpy ((char *) buf
, last_sent_step
? "s" : "c");
3152 putpkt ((char *) buf
);
3155 /* else fallthrough */
3157 warning ("Invalid remote reply: %s", buf
);
3162 if (thread_num
!= -1)
3164 return pid_to_ptid (thread_num
);
3166 return inferior_ptid
;
3169 /* Async version of remote_wait. */
3171 remote_async_wait (ptid_t ptid
, struct target_waitstatus
*status
)
3173 struct remote_state
*rs
= get_remote_state ();
3174 unsigned char *buf
= alloca (rs
->remote_packet_size
);
3175 ULONGEST thread_num
= -1;
3178 status
->kind
= TARGET_WAITKIND_EXITED
;
3179 status
->value
.integer
= 0;
3181 remote_stopped_by_watchpoint_p
= 0;
3187 if (!target_is_async_p ())
3188 ofunc
= signal (SIGINT
, remote_interrupt
);
3189 /* FIXME: cagney/1999-09-27: If we're in async mode we should
3190 _never_ wait for ever -> test on target_is_async_p().
3191 However, before we do that we need to ensure that the caller
3192 knows how to take the target into/out of async mode. */
3193 getpkt (buf
, (rs
->remote_packet_size
), wait_forever_enabled_p
);
3194 if (!target_is_async_p ())
3195 signal (SIGINT
, ofunc
);
3197 /* This is a hook for when we need to do something (perhaps the
3198 collection of trace data) every time the target stops. */
3199 if (target_wait_loop_hook
)
3200 (*target_wait_loop_hook
) ();
3204 case 'E': /* Error of some sort */
3205 warning ("Remote failure reply: %s", buf
);
3207 case 'T': /* Status with PC, SP, FP, ... */
3210 char regs
[MAX_REGISTER_SIZE
];
3212 /* Expedited reply, containing Signal, {regno, reg} repeat */
3213 /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where
3215 n... = register number
3216 r... = register contents
3218 p
= &buf
[3]; /* after Txx */
3227 /* If the packet contains a register number, save it in pnum
3228 and set p1 to point to the character following it.
3229 Otherwise p1 points to p. */
3231 /* If this packet is an awatch packet, don't parse the 'a'
3232 as a register number. */
3234 if (!strncmp (p
, "awatch", strlen ("awatch")) != 0)
3236 /* Read the register number. */
3237 pnum
= strtol (p
, &p_temp
, 16);
3238 p1
= (unsigned char *) p_temp
;
3243 if (p1
== p
) /* No register number present here */
3245 p1
= (unsigned char *) strchr (p
, ':');
3247 warning ("Malformed packet(a) (missing colon): %s\n\
3250 if (strncmp (p
, "thread", p1
- p
) == 0)
3252 p_temp
= unpack_varlen_hex (++p1
, &thread_num
);
3253 record_currthread (thread_num
);
3254 p
= (unsigned char *) p_temp
;
3256 else if ((strncmp (p
, "watch", p1
- p
) == 0)
3257 || (strncmp (p
, "rwatch", p1
- p
) == 0)
3258 || (strncmp (p
, "awatch", p1
- p
) == 0))
3260 remote_stopped_by_watchpoint_p
= 1;
3261 p
= unpack_varlen_hex (++p1
, &addr
);
3262 remote_watch_data_address
= (CORE_ADDR
)addr
;
3266 /* Silently skip unknown optional info. */
3267 p_temp
= (unsigned char *) strchr (p1
+ 1, ';');
3275 struct packet_reg
*reg
= packet_reg_from_pnum (rs
, pnum
);
3278 warning ("Malformed packet(b) (missing colon): %s\n\
3283 warning ("Remote sent bad register number %ld: %s\n\
3287 fieldsize
= hex2bin (p
, regs
, REGISTER_RAW_SIZE (reg
->regnum
));
3289 if (fieldsize
< REGISTER_RAW_SIZE (reg
->regnum
))
3290 warning ("Remote reply is too short: %s", buf
);
3291 supply_register (reg
->regnum
, regs
);
3296 warning ("Remote register badly formatted: %s", buf
);
3297 warning (" here: %s", p
);
3302 case 'S': /* Old style status, just signal only */
3303 status
->kind
= TARGET_WAITKIND_STOPPED
;
3304 status
->value
.sig
= (enum target_signal
)
3305 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
3309 /* Export Cisco kernel mode as a convenience variable
3310 (so that it can be used in the GDB prompt if desired). */
3312 if (cisco_kernel_mode
== 1)
3313 set_internalvar (lookup_internalvar ("cisco_kernel_mode"),
3314 value_from_string ("PDEBUG-"));
3315 cisco_kernel_mode
= 0;
3316 thread_num
= strtol ((const char *) &buf
[4], NULL
, 16);
3317 record_currthread (thread_num
);
3319 else if (buf
[3] == 'k')
3321 /* Export Cisco kernel mode as a convenience variable
3322 (so that it can be used in the GDB prompt if desired). */
3324 if (cisco_kernel_mode
== 1)
3325 set_internalvar (lookup_internalvar ("cisco_kernel_mode"),
3326 value_from_string ("KDEBUG-"));
3327 cisco_kernel_mode
= 1;
3330 case 'N': /* Cisco special: status and offsets */
3332 bfd_vma text_addr
, data_addr
, bss_addr
;
3333 bfd_signed_vma text_off
, data_off
, bss_off
;
3336 status
->kind
= TARGET_WAITKIND_STOPPED
;
3337 status
->value
.sig
= (enum target_signal
)
3338 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
3340 if (symfile_objfile
== NULL
)
3342 warning ("Relocation packet recieved with no symbol file. \
3347 /* Relocate object file. Buffer format is NAATT;DD;BB
3348 * where AA is the signal number, TT is the new text
3349 * address, DD * is the new data address, and BB is the
3350 * new bss address. */
3353 text_addr
= strtoul (p
, (char **) &p1
, 16);
3354 if (p1
== p
|| *p1
!= ';')
3355 warning ("Malformed relocation packet: Packet '%s'", buf
);
3357 data_addr
= strtoul (p
, (char **) &p1
, 16);
3358 if (p1
== p
|| *p1
!= ';')
3359 warning ("Malformed relocation packet: Packet '%s'", buf
);
3361 bss_addr
= strtoul (p
, (char **) &p1
, 16);
3363 warning ("Malformed relocation packet: Packet '%s'", buf
);
3365 if (remote_cisco_section_offsets (text_addr
, data_addr
, bss_addr
,
3366 &text_off
, &data_off
, &bss_off
)
3368 if (text_off
!= 0 || data_off
!= 0 || bss_off
!= 0)
3369 remote_cisco_objfile_relocate (text_off
, data_off
, bss_off
);
3373 case 'W': /* Target exited */
3375 /* The remote process exited. */
3376 status
->kind
= TARGET_WAITKIND_EXITED
;
3377 status
->value
.integer
= (fromhex (buf
[1]) << 4) + fromhex (buf
[2]);
3381 status
->kind
= TARGET_WAITKIND_SIGNALLED
;
3382 status
->value
.sig
= (enum target_signal
)
3383 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
3387 case 'O': /* Console output */
3388 remote_console_output (buf
+ 1);
3389 /* Return immediately to the event loop. The event loop will
3390 still be waiting on the inferior afterwards. */
3391 status
->kind
= TARGET_WAITKIND_IGNORE
;
3394 if (last_sent_signal
!= TARGET_SIGNAL_0
)
3396 /* Zero length reply means that we tried 'S' or 'C' and
3397 the remote system doesn't support it. */
3398 target_terminal_ours_for_output ();
3400 ("Can't send signals to this remote system. %s not sent.\n",
3401 target_signal_to_name (last_sent_signal
));
3402 last_sent_signal
= TARGET_SIGNAL_0
;
3403 target_terminal_inferior ();
3405 strcpy ((char *) buf
, last_sent_step
? "s" : "c");
3406 putpkt ((char *) buf
);
3409 /* else fallthrough */
3411 warning ("Invalid remote reply: %s", buf
);
3416 if (thread_num
!= -1)
3418 return pid_to_ptid (thread_num
);
3420 return inferior_ptid
;
3423 /* Number of bytes of registers this stub implements. */
3425 static int register_bytes_found
;
3427 /* Read the remote registers into the block REGS. */
3428 /* Currently we just read all the registers, so we don't use regnum. */
3432 remote_fetch_registers (int regnum
)
3434 struct remote_state
*rs
= get_remote_state ();
3435 char *buf
= alloca (rs
->remote_packet_size
);
3438 char *regs
= alloca (rs
->sizeof_g_packet
);
3440 set_thread (PIDGET (inferior_ptid
), 1);
3444 struct packet_reg
*reg
= packet_reg_from_regnum (rs
, regnum
);
3445 gdb_assert (reg
!= NULL
);
3446 if (!reg
->in_g_packet
)
3447 internal_error (__FILE__
, __LINE__
,
3448 "Attempt to fetch a non G-packet register when this "
3449 "remote.c does not support the p-packet.");
3453 remote_send (buf
, (rs
->remote_packet_size
));
3455 /* Save the size of the packet sent to us by the target. Its used
3456 as a heuristic when determining the max size of packets that the
3457 target can safely receive. */
3458 if ((rs
->actual_register_packet_size
) == 0)
3459 (rs
->actual_register_packet_size
) = strlen (buf
);
3461 /* Unimplemented registers read as all bits zero. */
3462 memset (regs
, 0, rs
->sizeof_g_packet
);
3464 /* We can get out of synch in various cases. If the first character
3465 in the buffer is not a hex character, assume that has happened
3466 and try to fetch another packet to read. */
3467 while ((buf
[0] < '0' || buf
[0] > '9')
3468 && (buf
[0] < 'a' || buf
[0] > 'f')
3469 && buf
[0] != 'x') /* New: unavailable register value */
3472 fprintf_unfiltered (gdb_stdlog
,
3473 "Bad register packet; fetching a new packet\n");
3474 getpkt (buf
, (rs
->remote_packet_size
), 0);
3477 /* Reply describes registers byte by byte, each byte encoded as two
3478 hex characters. Suck them all up, then supply them to the
3479 register cacheing/storage mechanism. */
3482 for (i
= 0; i
< rs
->sizeof_g_packet
; i
++)
3488 warning ("Remote reply is of odd length: %s", buf
);
3489 /* Don't change register_bytes_found in this case, and don't
3490 print a second warning. */
3493 if (p
[0] == 'x' && p
[1] == 'x')
3494 regs
[i
] = 0; /* 'x' */
3496 regs
[i
] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
3500 if (i
!= register_bytes_found
)
3502 register_bytes_found
= i
;
3503 if (REGISTER_BYTES_OK_P ()
3504 && !REGISTER_BYTES_OK (i
))
3505 warning ("Remote reply is too short: %s", buf
);
3511 for (i
= 0; i
< NUM_REGS
+ NUM_PSEUDO_REGS
; i
++)
3513 struct packet_reg
*r
= &rs
->regs
[i
];
3516 supply_register (r
->regnum
, regs
+ r
->offset
);
3517 if (buf
[r
->offset
* 2] == 'x')
3518 set_register_cached (i
, -1);
3524 /* Prepare to store registers. Since we may send them all (using a
3525 'G' request), we have to read out the ones we don't want to change
3529 remote_prepare_to_store (void)
3531 /* Make sure the entire registers array is valid. */
3532 switch (remote_protocol_P
.support
)
3534 case PACKET_DISABLE
:
3535 case PACKET_SUPPORT_UNKNOWN
:
3536 /* NOTE: This isn't rs->sizeof_g_packet because here, we are
3537 forcing the register cache to read its and not the target
3539 deprecated_read_register_bytes (0, (char *) NULL
,
3540 DEPRECATED_REGISTER_BYTES
); /* OK */
3547 /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF
3548 packet was not recognized. */
3551 store_register_using_P (int regnum
)
3553 struct remote_state
*rs
= get_remote_state ();
3554 struct packet_reg
*reg
= packet_reg_from_regnum (rs
, regnum
);
3555 /* Try storing a single register. */
3556 char *buf
= alloca (rs
->remote_packet_size
);
3557 char regp
[MAX_REGISTER_SIZE
];
3561 sprintf (buf
, "P%s=", phex_nz (reg
->pnum
, 0));
3562 p
= buf
+ strlen (buf
);
3563 regcache_collect (reg
->regnum
, regp
);
3564 bin2hex (regp
, p
, REGISTER_RAW_SIZE (reg
->regnum
));
3565 remote_send (buf
, rs
->remote_packet_size
);
3567 return buf
[0] != '\0';
3571 /* Store register REGNUM, or all registers if REGNUM == -1, from the contents
3572 of the register cache buffer. FIXME: ignores errors. */
3575 remote_store_registers (int regnum
)
3577 struct remote_state
*rs
= get_remote_state ();
3583 set_thread (PIDGET (inferior_ptid
), 1);
3587 switch (remote_protocol_P
.support
)
3589 case PACKET_DISABLE
:
3592 if (store_register_using_P (regnum
))
3595 error ("Protocol error: P packet not recognized by stub");
3596 case PACKET_SUPPORT_UNKNOWN
:
3597 if (store_register_using_P (regnum
))
3599 /* The stub recognized the 'P' packet. Remember this. */
3600 remote_protocol_P
.support
= PACKET_ENABLE
;
3605 /* The stub does not support the 'P' packet. Use 'G'
3606 instead, and don't try using 'P' in the future (it
3607 will just waste our time). */
3608 remote_protocol_P
.support
= PACKET_DISABLE
;
3614 /* Extract all the registers in the regcache copying them into a
3618 regs
= alloca (rs
->sizeof_g_packet
);
3619 memset (regs
, rs
->sizeof_g_packet
, 0);
3620 for (i
= 0; i
< NUM_REGS
+ NUM_PSEUDO_REGS
; i
++)
3622 struct packet_reg
*r
= &rs
->regs
[i
];
3624 regcache_collect (r
->regnum
, regs
+ r
->offset
);
3628 /* Command describes registers byte by byte,
3629 each byte encoded as two hex characters. */
3630 buf
= alloca (rs
->remote_packet_size
);
3633 /* remote_prepare_to_store insures that register_bytes_found gets set. */
3634 bin2hex (regs
, p
, register_bytes_found
);
3635 remote_send (buf
, (rs
->remote_packet_size
));
3639 /* Return the number of hex digits in num. */
3642 hexnumlen (ULONGEST num
)
3646 for (i
= 0; num
!= 0; i
++)
3652 /* Set BUF to the minimum number of hex digits representing NUM. */
3655 hexnumstr (char *buf
, ULONGEST num
)
3657 int len
= hexnumlen (num
);
3658 return hexnumnstr (buf
, num
, len
);
3662 /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */
3665 hexnumnstr (char *buf
, ULONGEST num
, int width
)
3671 for (i
= width
- 1; i
>= 0; i
--)
3673 buf
[i
] = "0123456789abcdef"[(num
& 0xf)];
3680 /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */
3683 remote_address_masked (CORE_ADDR addr
)
3685 if (remote_address_size
> 0
3686 && remote_address_size
< (sizeof (ULONGEST
) * 8))
3688 /* Only create a mask when that mask can safely be constructed
3689 in a ULONGEST variable. */
3691 mask
= (mask
<< remote_address_size
) - 1;
3697 /* Determine whether the remote target supports binary downloading.
3698 This is accomplished by sending a no-op memory write of zero length
3699 to the target at the specified address. It does not suffice to send
3700 the whole packet, since many stubs strip the eighth bit and subsequently
3701 compute a wrong checksum, which causes real havoc with remote_write_bytes.
3703 NOTE: This can still lose if the serial line is not eight-bit
3704 clean. In cases like this, the user should clear "remote
3708 check_binary_download (CORE_ADDR addr
)
3710 struct remote_state
*rs
= get_remote_state ();
3711 switch (remote_protocol_binary_download
.support
)
3713 case PACKET_DISABLE
:
3717 case PACKET_SUPPORT_UNKNOWN
:
3719 char *buf
= alloca (rs
->remote_packet_size
);
3724 p
+= hexnumstr (p
, (ULONGEST
) addr
);
3726 p
+= hexnumstr (p
, (ULONGEST
) 0);
3730 putpkt_binary (buf
, (int) (p
- buf
));
3731 getpkt (buf
, (rs
->remote_packet_size
), 0);
3736 fprintf_unfiltered (gdb_stdlog
,
3737 "binary downloading NOT suppported by target\n");
3738 remote_protocol_binary_download
.support
= PACKET_DISABLE
;
3743 fprintf_unfiltered (gdb_stdlog
,
3744 "binary downloading suppported by target\n");
3745 remote_protocol_binary_download
.support
= PACKET_ENABLE
;
3752 /* Write memory data directly to the remote machine.
3753 This does not inform the data cache; the data cache uses this.
3754 MEMADDR is the address in the remote memory space.
3755 MYADDR is the address of the buffer in our space.
3756 LEN is the number of bytes.
3758 Returns number of bytes transferred, or 0 (setting errno) for
3759 error. Only transfer a single packet. */
3762 remote_write_bytes (CORE_ADDR memaddr
, char *myaddr
, int len
)
3765 int max_buf_size
; /* Max size of packet output buffer */
3767 unsigned char *plen
;
3773 /* Verify that the target can support a binary download */
3774 check_binary_download (memaddr
);
3776 /* Determine the max packet size. */
3777 max_buf_size
= get_memory_write_packet_size ();
3778 sizeof_buf
= max_buf_size
+ 1; /* Space for trailing NUL */
3779 buf
= alloca (sizeof_buf
);
3781 /* Subtract header overhead from max payload size - $M<memaddr>,<len>:#nn */
3782 max_buf_size
-= 2 + hexnumlen (memaddr
+ len
- 1) + 1 + hexnumlen (len
) + 4;
3784 /* construct "M"<memaddr>","<len>":" */
3785 /* sprintf (buf, "M%lx,%x:", (unsigned long) memaddr, todo); */
3788 /* Append [XM]. Compute a best guess of the number of bytes
3789 actually transfered. */
3790 switch (remote_protocol_binary_download
.support
)
3794 /* Best guess at number of bytes that will fit. */
3795 todo
= min (len
, max_buf_size
);
3797 case PACKET_DISABLE
:
3799 /* num bytes that will fit */
3800 todo
= min (len
, max_buf_size
/ 2);
3802 case PACKET_SUPPORT_UNKNOWN
:
3803 internal_error (__FILE__
, __LINE__
,
3804 "remote_write_bytes: bad internal state");
3806 internal_error (__FILE__
, __LINE__
, "bad switch");
3809 /* Append <memaddr> */
3810 memaddr
= remote_address_masked (memaddr
);
3811 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
3814 /* Append <len>. Retain the location/size of <len>. It may
3815 need to be adjusted once the packet body has been created. */
3817 plenlen
= hexnumstr (p
, (ULONGEST
) todo
);
3822 /* Append the packet body. */
3823 switch (remote_protocol_binary_download
.support
)
3826 /* Binary mode. Send target system values byte by byte, in
3827 increasing byte addresses. Only escape certain critical
3830 (nr_bytes
< todo
) && (p
- buf
) < (max_buf_size
- 2);
3833 switch (myaddr
[nr_bytes
] & 0xff)
3838 /* These must be escaped */
3840 *p
++ = (myaddr
[nr_bytes
] & 0xff) ^ 0x20;
3843 *p
++ = myaddr
[nr_bytes
] & 0xff;
3847 if (nr_bytes
< todo
)
3849 /* Escape chars have filled up the buffer prematurely,
3850 and we have actually sent fewer bytes than planned.
3851 Fix-up the length field of the packet. Use the same
3852 number of characters as before. */
3854 plen
+= hexnumnstr (plen
, (ULONGEST
) nr_bytes
, plenlen
);
3855 *plen
= ':'; /* overwrite \0 from hexnumnstr() */
3858 case PACKET_DISABLE
:
3859 /* Normal mode: Send target system values byte by byte, in
3860 increasing byte addresses. Each byte is encoded as a two hex
3862 nr_bytes
= bin2hex (myaddr
, p
, todo
);
3865 case PACKET_SUPPORT_UNKNOWN
:
3866 internal_error (__FILE__
, __LINE__
,
3867 "remote_write_bytes: bad internal state");
3869 internal_error (__FILE__
, __LINE__
, "bad switch");
3872 putpkt_binary (buf
, (int) (p
- buf
));
3873 getpkt (buf
, sizeof_buf
, 0);
3877 /* There is no correspondance between what the remote protocol
3878 uses for errors and errno codes. We would like a cleaner way
3879 of representing errors (big enough to include errno codes,
3880 bfd_error codes, and others). But for now just return EIO. */
3885 /* Return NR_BYTES, not TODO, in case escape chars caused us to send fewer
3886 bytes than we'd planned. */
3890 /* Read memory data directly from the remote machine.
3891 This does not use the data cache; the data cache uses this.
3892 MEMADDR is the address in the remote memory space.
3893 MYADDR is the address of the buffer in our space.
3894 LEN is the number of bytes.
3896 Returns number of bytes transferred, or 0 for error. */
3898 /* NOTE: cagney/1999-10-18: This function (and its siblings in other
3899 remote targets) shouldn't attempt to read the entire buffer.
3900 Instead it should read a single packet worth of data and then
3901 return the byte size of that packet to the caller. The caller (its
3902 caller and its callers caller ;-) already contains code for
3903 handling partial reads. */
3906 remote_read_bytes (CORE_ADDR memaddr
, char *myaddr
, int len
)
3909 int max_buf_size
; /* Max size of packet output buffer */
3913 /* Create a buffer big enough for this packet. */
3914 max_buf_size
= get_memory_read_packet_size ();
3915 sizeof_buf
= max_buf_size
+ 1; /* Space for trailing NUL */
3916 buf
= alloca (sizeof_buf
);
3925 todo
= min (len
, max_buf_size
/ 2); /* num bytes that will fit */
3927 /* construct "m"<memaddr>","<len>" */
3928 /* sprintf (buf, "m%lx,%x", (unsigned long) memaddr, todo); */
3929 memaddr
= remote_address_masked (memaddr
);
3932 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
3934 p
+= hexnumstr (p
, (ULONGEST
) todo
);
3938 getpkt (buf
, sizeof_buf
, 0);
3941 && isxdigit (buf
[1]) && isxdigit (buf
[2])
3944 /* There is no correspondance between what the remote protocol uses
3945 for errors and errno codes. We would like a cleaner way of
3946 representing errors (big enough to include errno codes, bfd_error
3947 codes, and others). But for now just return EIO. */
3952 /* Reply describes memory byte by byte,
3953 each byte encoded as two hex characters. */
3956 if ((i
= hex2bin (p
, myaddr
, todo
)) < todo
)
3958 /* Reply is short. This means that we were able to read
3959 only part of what we wanted to. */
3960 return i
+ (origlen
- len
);
3969 /* Read or write LEN bytes from inferior memory at MEMADDR,
3970 transferring to or from debugger address BUFFER. Write to inferior if
3971 SHOULD_WRITE is nonzero. Returns length of data written or read; 0
3972 for error. TARGET is unused. */
3976 remote_xfer_memory (CORE_ADDR mem_addr
, char *buffer
, int mem_len
,
3977 int should_write
, struct mem_attrib
*attrib
,
3978 struct target_ops
*target
)
3980 CORE_ADDR targ_addr
;
3984 /* Should this be the selected frame? */
3985 gdbarch_remote_translate_xfer_address (current_gdbarch
, current_regcache
,
3987 &targ_addr
, &targ_len
);
3992 res
= remote_write_bytes (targ_addr
, buffer
, targ_len
);
3994 res
= remote_read_bytes (targ_addr
, buffer
, targ_len
);
4001 /* Enable after 4.12. */
4004 remote_search (int len
, char *data
, char *mask
, CORE_ADDR startaddr
,
4005 int increment
, CORE_ADDR lorange
, CORE_ADDR hirange
,
4006 CORE_ADDR
*addr_found
, char *data_found
)
4008 if (increment
== -4 && len
== 4)
4010 long mask_long
, data_long
;
4011 long data_found_long
;
4012 CORE_ADDR addr_we_found
;
4013 char *buf
= alloca (rs
->remote_packet_size
);
4014 long returned_long
[2];
4017 mask_long
= extract_unsigned_integer (mask
, len
);
4018 data_long
= extract_unsigned_integer (data
, len
);
4019 sprintf (buf
, "t%x:%x,%x", startaddr
, data_long
, mask_long
);
4021 getpkt (buf
, (rs
->remote_packet_size
), 0);
4024 /* The stub doesn't support the 't' request. We might want to
4025 remember this fact, but on the other hand the stub could be
4026 switched on us. Maybe we should remember it only until
4027 the next "target remote". */
4028 generic_search (len
, data
, mask
, startaddr
, increment
, lorange
,
4029 hirange
, addr_found
, data_found
);
4034 /* There is no correspondance between what the remote protocol uses
4035 for errors and errno codes. We would like a cleaner way of
4036 representing errors (big enough to include errno codes, bfd_error
4037 codes, and others). But for now just use EIO. */
4038 memory_error (EIO
, startaddr
);
4041 while (*p
!= '\0' && *p
!= ',')
4042 addr_we_found
= (addr_we_found
<< 4) + fromhex (*p
++);
4044 error ("Protocol error: short return for search");
4046 data_found_long
= 0;
4047 while (*p
!= '\0' && *p
!= ',')
4048 data_found_long
= (data_found_long
<< 4) + fromhex (*p
++);
4049 /* Ignore anything after this comma, for future extensions. */
4051 if (addr_we_found
< lorange
|| addr_we_found
>= hirange
)
4057 *addr_found
= addr_we_found
;
4058 *data_found
= store_unsigned_integer (data_we_found
, len
);
4061 generic_search (len
, data
, mask
, startaddr
, increment
, lorange
,
4062 hirange
, addr_found
, data_found
);
4067 remote_files_info (struct target_ops
*ignore
)
4069 puts_filtered ("Debugging a target over a serial line.\n");
4072 /* Stuff for dealing with the packets which are part of this protocol.
4073 See comment at top of file for details. */
4075 /* Read a single character from the remote end, masking it down to 7 bits. */
4078 readchar (int timeout
)
4082 ch
= serial_readchar (remote_desc
, timeout
);
4087 switch ((enum serial_rc
) ch
)
4090 target_mourn_inferior ();
4091 error ("Remote connection closed");
4094 perror_with_name ("Remote communication error");
4096 case SERIAL_TIMEOUT
:
4102 /* Send the command in BUF to the remote machine, and read the reply
4103 into BUF. Report an error if we get an error reply. */
4106 remote_send (char *buf
,
4110 getpkt (buf
, sizeof_buf
, 0);
4113 error ("Remote failure reply: %s", buf
);
4116 /* Display a null-terminated packet on stdout, for debugging, using C
4120 print_packet (char *buf
)
4122 puts_filtered ("\"");
4123 fputstr_filtered (buf
, '"', gdb_stdout
);
4124 puts_filtered ("\"");
4130 return putpkt_binary (buf
, strlen (buf
));
4133 /* Send a packet to the remote machine, with error checking. The data
4134 of the packet is in BUF. The string in BUF can be at most (rs->remote_packet_size) - 5
4135 to account for the $, # and checksum, and for a possible /0 if we are
4136 debugging (remote_debug) and want to print the sent packet as a string */
4139 putpkt_binary (char *buf
, int cnt
)
4141 struct remote_state
*rs
= get_remote_state ();
4143 unsigned char csum
= 0;
4144 char *buf2
= alloca (cnt
+ 6);
4145 long sizeof_junkbuf
= (rs
->remote_packet_size
);
4146 char *junkbuf
= alloca (sizeof_junkbuf
);
4152 /* Copy the packet into buffer BUF2, encapsulating it
4153 and giving it a checksum. */
4158 for (i
= 0; i
< cnt
; i
++)
4164 *p
++ = tohex ((csum
>> 4) & 0xf);
4165 *p
++ = tohex (csum
& 0xf);
4167 /* Send it over and over until we get a positive ack. */
4171 int started_error_output
= 0;
4176 fprintf_unfiltered (gdb_stdlog
, "Sending packet: ");
4177 fputstrn_unfiltered (buf2
, p
- buf2
, 0, gdb_stdlog
);
4178 fprintf_unfiltered (gdb_stdlog
, "...");
4179 gdb_flush (gdb_stdlog
);
4181 if (serial_write (remote_desc
, buf2
, p
- buf2
))
4182 perror_with_name ("putpkt: write failed");
4184 /* read until either a timeout occurs (-2) or '+' is read */
4187 ch
= readchar (remote_timeout
);
4195 case SERIAL_TIMEOUT
:
4197 if (started_error_output
)
4199 putchar_unfiltered ('\n');
4200 started_error_output
= 0;
4209 fprintf_unfiltered (gdb_stdlog
, "Ack\n");
4213 fprintf_unfiltered (gdb_stdlog
, "Nak\n");
4214 case SERIAL_TIMEOUT
:
4218 break; /* Retransmit buffer */
4222 fprintf_unfiltered (gdb_stdlog
, "Packet instead of Ack, ignoring it\n");
4223 /* It's probably an old response, and we're out of sync.
4224 Just gobble up the packet and ignore it. */
4225 read_frame (junkbuf
, sizeof_junkbuf
);
4226 continue; /* Now, go look for + */
4231 if (!started_error_output
)
4233 started_error_output
= 1;
4234 fprintf_unfiltered (gdb_stdlog
, "putpkt: Junk: ");
4236 fputc_unfiltered (ch
& 0177, gdb_stdlog
);
4240 break; /* Here to retransmit */
4244 /* This is wrong. If doing a long backtrace, the user should be
4245 able to get out next time we call QUIT, without anything as
4246 violent as interrupt_query. If we want to provide a way out of
4247 here without getting to the next QUIT, it should be based on
4248 hitting ^C twice as in remote_wait. */
4258 static int remote_cisco_mode
;
4260 /* Come here after finding the start of the frame. Collect the rest
4261 into BUF, verifying the checksum, length, and handling run-length
4262 compression. No more than sizeof_buf-1 characters are read so that
4263 the buffer can be NUL terminated.
4265 Returns -1 on error, number of characters in buffer (ignoring the
4266 trailing NULL) on success. (could be extended to return one of the
4267 SERIAL status indications). */
4270 read_frame (char *buf
,
4282 /* ASSERT (bc < sizeof_buf - 1) - space for trailing NUL */
4283 c
= readchar (remote_timeout
);
4286 case SERIAL_TIMEOUT
:
4288 fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog
);
4292 fputs_filtered ("Saw new packet start in middle of old one\n",
4294 return -1; /* Start a new packet, count retries */
4297 unsigned char pktcsum
;
4303 check_0
= readchar (remote_timeout
);
4305 check_1
= readchar (remote_timeout
);
4307 if (check_0
== SERIAL_TIMEOUT
|| check_1
== SERIAL_TIMEOUT
)
4310 fputs_filtered ("Timeout in checksum, retrying\n", gdb_stdlog
);
4313 else if (check_0
< 0 || check_1
< 0)
4316 fputs_filtered ("Communication error in checksum\n", gdb_stdlog
);
4320 pktcsum
= (fromhex (check_0
) << 4) | fromhex (check_1
);
4321 if (csum
== pktcsum
)
4326 fprintf_filtered (gdb_stdlog
,
4327 "Bad checksum, sentsum=0x%x, csum=0x%x, buf=",
4329 fputs_filtered (buf
, gdb_stdlog
);
4330 fputs_filtered ("\n", gdb_stdlog
);
4332 /* Number of characters in buffer ignoring trailing
4336 case '*': /* Run length encoding */
4341 if (remote_cisco_mode
== 0)
4343 c
= readchar (remote_timeout
);
4345 repeat
= c
- ' ' + 3; /* Compute repeat count */
4349 /* Cisco's run-length encoding variant uses two
4350 hex chars to represent the repeat count. */
4352 c
= readchar (remote_timeout
);
4354 repeat
= fromhex (c
) << 4;
4355 c
= readchar (remote_timeout
);
4357 repeat
+= fromhex (c
);
4360 /* The character before ``*'' is repeated. */
4362 if (repeat
> 0 && repeat
<= 255
4364 && bc
+ repeat
- 1 < sizeof_buf
- 1)
4366 memset (&buf
[bc
], buf
[bc
- 1], repeat
);
4372 printf_filtered ("Repeat count %d too large for buffer: ", repeat
);
4373 puts_filtered (buf
);
4374 puts_filtered ("\n");
4378 if (bc
< sizeof_buf
- 1)
4386 puts_filtered ("Remote packet too long: ");
4387 puts_filtered (buf
);
4388 puts_filtered ("\n");
4395 /* Read a packet from the remote machine, with error checking, and
4396 store it in BUF. If FOREVER, wait forever rather than timing out;
4397 this is used (in synchronous mode) to wait for a target that is is
4398 executing user code to stop. */
4399 /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we
4400 don't have to change all the calls to getpkt to deal with the
4401 return value, because at the moment I don't know what the right
4402 thing to do it for those. */
4410 timed_out
= getpkt_sane (buf
, sizeof_buf
, forever
);
4414 /* Read a packet from the remote machine, with error checking, and
4415 store it in BUF. If FOREVER, wait forever rather than timing out;
4416 this is used (in synchronous mode) to wait for a target that is is
4417 executing user code to stop. If FOREVER == 0, this function is
4418 allowed to time out gracefully and return an indication of this to
4421 getpkt_sane (char *buf
,
4430 strcpy (buf
, "timeout");
4434 timeout
= watchdog
> 0 ? watchdog
: -1;
4438 timeout
= remote_timeout
;
4442 for (tries
= 1; tries
<= MAX_TRIES
; tries
++)
4444 /* This can loop forever if the remote side sends us characters
4445 continuously, but if it pauses, we'll get a zero from readchar
4446 because of timeout. Then we'll count that as a retry. */
4448 /* Note that we will only wait forever prior to the start of a packet.
4449 After that, we expect characters to arrive at a brisk pace. They
4450 should show up within remote_timeout intervals. */
4454 c
= readchar (timeout
);
4456 if (c
== SERIAL_TIMEOUT
)
4458 if (forever
) /* Watchdog went off? Kill the target. */
4461 target_mourn_inferior ();
4462 error ("Watchdog has expired. Target detached.\n");
4465 fputs_filtered ("Timed out.\n", gdb_stdlog
);
4471 /* We've found the start of a packet, now collect the data. */
4473 val
= read_frame (buf
, sizeof_buf
);
4479 fprintf_unfiltered (gdb_stdlog
, "Packet received: ");
4480 fputstr_unfiltered (buf
, 0, gdb_stdlog
);
4481 fprintf_unfiltered (gdb_stdlog
, "\n");
4483 serial_write (remote_desc
, "+", 1);
4487 /* Try the whole thing again. */
4489 serial_write (remote_desc
, "-", 1);
4492 /* We have tried hard enough, and just can't receive the packet. Give up. */
4494 printf_unfiltered ("Ignoring packet error, continuing...\n");
4495 serial_write (remote_desc
, "+", 1);
4502 /* For some mysterious reason, wait_for_inferior calls kill instead of
4503 mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */
4507 target_mourn_inferior ();
4511 /* Use catch_errors so the user can quit from gdb even when we aren't on
4512 speaking terms with the remote system. */
4513 catch_errors ((catch_errors_ftype
*) putpkt
, "k", "", RETURN_MASK_ERROR
);
4515 /* Don't wait for it to die. I'm not really sure it matters whether
4516 we do or not. For the existing stubs, kill is a noop. */
4517 target_mourn_inferior ();
4520 /* Async version of remote_kill. */
4522 remote_async_kill (void)
4524 /* Unregister the file descriptor from the event loop. */
4525 if (target_is_async_p ())
4526 serial_async (remote_desc
, NULL
, 0);
4528 /* For some mysterious reason, wait_for_inferior calls kill instead of
4529 mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */
4533 target_mourn_inferior ();
4537 /* Use catch_errors so the user can quit from gdb even when we aren't on
4538 speaking terms with the remote system. */
4539 catch_errors ((catch_errors_ftype
*) putpkt
, "k", "", RETURN_MASK_ERROR
);
4541 /* Don't wait for it to die. I'm not really sure it matters whether
4542 we do or not. For the existing stubs, kill is a noop. */
4543 target_mourn_inferior ();
4549 remote_mourn_1 (&remote_ops
);
4553 remote_async_mourn (void)
4555 remote_mourn_1 (&remote_async_ops
);
4559 extended_remote_mourn (void)
4561 /* We do _not_ want to mourn the target like this; this will
4562 remove the extended remote target from the target stack,
4563 and the next time the user says "run" it'll fail.
4565 FIXME: What is the right thing to do here? */
4567 remote_mourn_1 (&extended_remote_ops
);
4571 /* Worker function for remote_mourn. */
4573 remote_mourn_1 (struct target_ops
*target
)
4575 unpush_target (target
);
4576 generic_mourn_inferior ();
4579 /* In the extended protocol we want to be able to do things like
4580 "run" and have them basically work as expected. So we need
4581 a special create_inferior function.
4583 FIXME: One day add support for changing the exec file
4584 we're debugging, arguments and an environment. */
4587 extended_remote_create_inferior (char *exec_file
, char *args
, char **env
)
4589 /* Rip out the breakpoints; we'll reinsert them after restarting
4590 the remote server. */
4591 remove_breakpoints ();
4593 /* Now restart the remote server. */
4594 extended_remote_restart ();
4596 /* Now put the breakpoints back in. This way we're safe if the
4597 restart function works via a unix fork on the remote side. */
4598 insert_breakpoints ();
4600 /* Clean up from the last time we were running. */
4601 clear_proceed_status ();
4603 /* Let the remote process run. */
4604 proceed (-1, TARGET_SIGNAL_0
, 0);
4607 /* Async version of extended_remote_create_inferior. */
4609 extended_remote_async_create_inferior (char *exec_file
, char *args
, char **env
)
4611 /* Rip out the breakpoints; we'll reinsert them after restarting
4612 the remote server. */
4613 remove_breakpoints ();
4615 /* If running asynchronously, register the target file descriptor
4616 with the event loop. */
4617 if (event_loop_p
&& target_can_async_p ())
4618 target_async (inferior_event_handler
, 0);
4620 /* Now restart the remote server. */
4621 extended_remote_restart ();
4623 /* Now put the breakpoints back in. This way we're safe if the
4624 restart function works via a unix fork on the remote side. */
4625 insert_breakpoints ();
4627 /* Clean up from the last time we were running. */
4628 clear_proceed_status ();
4630 /* Let the remote process run. */
4631 proceed (-1, TARGET_SIGNAL_0
, 0);
4635 /* On some machines, e.g. 68k, we may use a different breakpoint
4636 instruction than other targets; in those use REMOTE_BREAKPOINT
4637 instead of just BREAKPOINT_FROM_PC. Also, bi-endian targets may
4638 define LITTLE_REMOTE_BREAKPOINT and BIG_REMOTE_BREAKPOINT. If none
4639 of these are defined, we just call the standard routines that are
4642 /* FIXME, these ought to be done in a more dynamic fashion. For instance,
4643 the choice of breakpoint instruction affects target program design and
4644 vice versa, and by making it user-tweakable, the special code here
4645 goes away and we need fewer special GDB configurations. */
4647 #if defined (LITTLE_REMOTE_BREAKPOINT) && defined (BIG_REMOTE_BREAKPOINT) && !defined(REMOTE_BREAKPOINT)
4648 #define REMOTE_BREAKPOINT
4651 #ifdef REMOTE_BREAKPOINT
4653 /* If the target isn't bi-endian, just pretend it is. */
4654 #if !defined (LITTLE_REMOTE_BREAKPOINT) && !defined (BIG_REMOTE_BREAKPOINT)
4655 #define LITTLE_REMOTE_BREAKPOINT REMOTE_BREAKPOINT
4656 #define BIG_REMOTE_BREAKPOINT REMOTE_BREAKPOINT
4659 static unsigned char big_break_insn
[] = BIG_REMOTE_BREAKPOINT
;
4660 static unsigned char little_break_insn
[] = LITTLE_REMOTE_BREAKPOINT
;
4662 #endif /* REMOTE_BREAKPOINT */
4664 /* Insert a breakpoint on targets that don't have any better
4665 breakpoint support. We read the contents of the target location
4666 and stash it, then overwrite it with a breakpoint instruction.
4667 ADDR is the target location in the target machine. CONTENTS_CACHE
4668 is a pointer to memory allocated for saving the target contents.
4669 It is guaranteed by the caller to be long enough to save the number
4670 of bytes returned by BREAKPOINT_FROM_PC. */
4673 remote_insert_breakpoint (CORE_ADDR addr
, char *contents_cache
)
4675 struct remote_state
*rs
= get_remote_state ();
4676 #ifdef REMOTE_BREAKPOINT
4681 /* Try the "Z" s/w breakpoint packet if it is not already disabled.
4682 If it succeeds, then set the support to PACKET_ENABLE. If it
4683 fails, and the user has explicitly requested the Z support then
4684 report an error, otherwise, mark it disabled and go on. */
4686 if (remote_protocol_Z
[Z_PACKET_SOFTWARE_BP
].support
!= PACKET_DISABLE
)
4688 char *buf
= alloca (rs
->remote_packet_size
);
4691 addr
= remote_address_masked (addr
);
4695 p
+= hexnumstr (p
, (ULONGEST
) addr
);
4696 BREAKPOINT_FROM_PC (&addr
, &bp_size
);
4697 sprintf (p
, ",%d", bp_size
);
4700 getpkt (buf
, (rs
->remote_packet_size
), 0);
4702 switch (packet_ok (buf
, &remote_protocol_Z
[Z_PACKET_SOFTWARE_BP
]))
4708 case PACKET_UNKNOWN
:
4713 #ifdef REMOTE_BREAKPOINT
4714 val
= target_read_memory (addr
, contents_cache
, sizeof big_break_insn
);
4718 if (TARGET_BYTE_ORDER
== BFD_ENDIAN_BIG
)
4719 val
= target_write_memory (addr
, (char *) big_break_insn
,
4720 sizeof big_break_insn
);
4722 val
= target_write_memory (addr
, (char *) little_break_insn
,
4723 sizeof little_break_insn
);
4728 return memory_insert_breakpoint (addr
, contents_cache
);
4729 #endif /* REMOTE_BREAKPOINT */
4733 remote_remove_breakpoint (CORE_ADDR addr
, char *contents_cache
)
4735 struct remote_state
*rs
= get_remote_state ();
4738 if (remote_protocol_Z
[Z_PACKET_SOFTWARE_BP
].support
!= PACKET_DISABLE
)
4740 char *buf
= alloca (rs
->remote_packet_size
);
4747 addr
= remote_address_masked (addr
);
4748 p
+= hexnumstr (p
, (ULONGEST
) addr
);
4749 BREAKPOINT_FROM_PC (&addr
, &bp_size
);
4750 sprintf (p
, ",%d", bp_size
);
4753 getpkt (buf
, (rs
->remote_packet_size
), 0);
4755 return (buf
[0] == 'E');
4758 #ifdef REMOTE_BREAKPOINT
4759 return target_write_memory (addr
, contents_cache
, sizeof big_break_insn
);
4761 return memory_remove_breakpoint (addr
, contents_cache
);
4762 #endif /* REMOTE_BREAKPOINT */
4766 watchpoint_to_Z_packet (int type
)
4780 internal_error (__FILE__
, __LINE__
,
4781 "hw_bp_to_z: bad watchpoint type %d", type
);
4786 remote_insert_watchpoint (CORE_ADDR addr
, int len
, int type
)
4788 struct remote_state
*rs
= get_remote_state ();
4789 char *buf
= alloca (rs
->remote_packet_size
);
4791 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
4793 if (remote_protocol_Z
[packet
].support
== PACKET_DISABLE
)
4794 error ("Can't set hardware watchpoints without the '%s' (%s) packet\n",
4795 remote_protocol_Z
[packet
].name
,
4796 remote_protocol_Z
[packet
].title
);
4798 sprintf (buf
, "Z%x,", packet
);
4799 p
= strchr (buf
, '\0');
4800 addr
= remote_address_masked (addr
);
4801 p
+= hexnumstr (p
, (ULONGEST
) addr
);
4802 sprintf (p
, ",%x", len
);
4805 getpkt (buf
, (rs
->remote_packet_size
), 0);
4807 switch (packet_ok (buf
, &remote_protocol_Z
[packet
]))
4810 case PACKET_UNKNOWN
:
4815 internal_error (__FILE__
, __LINE__
,
4816 "remote_insert_watchpoint: reached end of function");
4821 remote_remove_watchpoint (CORE_ADDR addr
, int len
, int type
)
4823 struct remote_state
*rs
= get_remote_state ();
4824 char *buf
= alloca (rs
->remote_packet_size
);
4826 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
4828 if (remote_protocol_Z
[packet
].support
== PACKET_DISABLE
)
4829 error ("Can't clear hardware watchpoints without the '%s' (%s) packet\n",
4830 remote_protocol_Z
[packet
].name
,
4831 remote_protocol_Z
[packet
].title
);
4833 sprintf (buf
, "z%x,", packet
);
4834 p
= strchr (buf
, '\0');
4835 addr
= remote_address_masked (addr
);
4836 p
+= hexnumstr (p
, (ULONGEST
) addr
);
4837 sprintf (p
, ",%x", len
);
4839 getpkt (buf
, (rs
->remote_packet_size
), 0);
4841 switch (packet_ok (buf
, &remote_protocol_Z
[packet
]))
4844 case PACKET_UNKNOWN
:
4849 internal_error (__FILE__
, __LINE__
,
4850 "remote_remove_watchpoint: reached end of function");
4854 int remote_hw_watchpoint_limit
= -1;
4855 int remote_hw_breakpoint_limit
= -1;
4858 remote_check_watch_resources (int type
, int cnt
, int ot
)
4860 if (type
== bp_hardware_breakpoint
)
4862 if (remote_hw_breakpoint_limit
== 0)
4864 else if (remote_hw_breakpoint_limit
< 0)
4866 else if (cnt
<= remote_hw_breakpoint_limit
)
4871 if (remote_hw_watchpoint_limit
== 0)
4873 else if (remote_hw_watchpoint_limit
< 0)
4877 else if (cnt
<= remote_hw_watchpoint_limit
)
4884 remote_stopped_by_watchpoint (void)
4886 return remote_stopped_by_watchpoint_p
;
4890 remote_stopped_data_address (void)
4892 if (remote_stopped_by_watchpoint ())
4893 return remote_watch_data_address
;
4894 return (CORE_ADDR
)0;
4899 remote_insert_hw_breakpoint (CORE_ADDR addr
, char *shadow
)
4902 struct remote_state
*rs
= get_remote_state ();
4903 char *buf
= alloca (rs
->remote_packet_size
);
4906 /* The length field should be set to the size of a breakpoint
4909 BREAKPOINT_FROM_PC (&addr
, &len
);
4911 if (remote_protocol_Z
[Z_PACKET_HARDWARE_BP
].support
== PACKET_DISABLE
)
4912 error ("Can't set hardware breakpoint without the '%s' (%s) packet\n",
4913 remote_protocol_Z
[Z_PACKET_HARDWARE_BP
].name
,
4914 remote_protocol_Z
[Z_PACKET_HARDWARE_BP
].title
);
4920 addr
= remote_address_masked (addr
);
4921 p
+= hexnumstr (p
, (ULONGEST
) addr
);
4922 sprintf (p
, ",%x", len
);
4925 getpkt (buf
, (rs
->remote_packet_size
), 0);
4927 switch (packet_ok (buf
, &remote_protocol_Z
[Z_PACKET_HARDWARE_BP
]))
4930 case PACKET_UNKNOWN
:
4935 internal_error (__FILE__
, __LINE__
,
4936 "remote_insert_hw_breakpoint: reached end of function");
4941 remote_remove_hw_breakpoint (CORE_ADDR addr
, char *shadow
)
4944 struct remote_state
*rs
= get_remote_state ();
4945 char *buf
= alloca (rs
->remote_packet_size
);
4948 /* The length field should be set to the size of a breakpoint
4951 BREAKPOINT_FROM_PC (&addr
, &len
);
4953 if (remote_protocol_Z
[Z_PACKET_HARDWARE_BP
].support
== PACKET_DISABLE
)
4954 error ("Can't clear hardware breakpoint without the '%s' (%s) packet\n",
4955 remote_protocol_Z
[Z_PACKET_HARDWARE_BP
].name
,
4956 remote_protocol_Z
[Z_PACKET_HARDWARE_BP
].title
);
4962 addr
= remote_address_masked (addr
);
4963 p
+= hexnumstr (p
, (ULONGEST
) addr
);
4964 sprintf (p
, ",%x", len
);
4967 getpkt (buf
, (rs
->remote_packet_size
), 0);
4969 switch (packet_ok (buf
, &remote_protocol_Z
[Z_PACKET_HARDWARE_BP
]))
4972 case PACKET_UNKNOWN
:
4977 internal_error (__FILE__
, __LINE__
,
4978 "remote_remove_hw_breakpoint: reached end of function");
4981 /* Some targets are only capable of doing downloads, and afterwards
4982 they switch to the remote serial protocol. This function provides
4983 a clean way to get from the download target to the remote target.
4984 It's basically just a wrapper so that we don't have to expose any
4985 of the internal workings of remote.c.
4987 Prior to calling this routine, you should shutdown the current
4988 target code, else you will get the "A program is being debugged
4989 already..." message. Usually a call to pop_target() suffices. */
4992 push_remote_target (char *name
, int from_tty
)
4994 printf_filtered ("Switching to remote protocol\n");
4995 remote_open (name
, from_tty
);
4998 /* Table used by the crc32 function to calcuate the checksum. */
5000 static unsigned long crc32_table
[256] =
5003 static unsigned long
5004 crc32 (unsigned char *buf
, int len
, unsigned int crc
)
5006 if (!crc32_table
[1])
5008 /* Initialize the CRC table and the decoding table. */
5012 for (i
= 0; i
< 256; i
++)
5014 for (c
= i
<< 24, j
= 8; j
> 0; --j
)
5015 c
= c
& 0x80000000 ? (c
<< 1) ^ 0x04c11db7 : (c
<< 1);
5022 crc
= (crc
<< 8) ^ crc32_table
[((crc
>> 24) ^ *buf
) & 255];
5028 /* compare-sections command
5030 With no arguments, compares each loadable section in the exec bfd
5031 with the same memory range on the target, and reports mismatches.
5032 Useful for verifying the image on the target against the exec file.
5033 Depends on the target understanding the new "qCRC:" request. */
5035 /* FIXME: cagney/1999-10-26: This command should be broken down into a
5036 target method (target verify memory) and generic version of the
5037 actual command. This will allow other high-level code (especially
5038 generic_load()) to make use of this target functionality. */
5041 compare_sections_command (char *args
, int from_tty
)
5043 struct remote_state
*rs
= get_remote_state ();
5045 unsigned long host_crc
, target_crc
;
5046 extern bfd
*exec_bfd
;
5047 struct cleanup
*old_chain
;
5050 const char *sectname
;
5051 char *buf
= alloca (rs
->remote_packet_size
);
5058 error ("command cannot be used without an exec file");
5059 if (!current_target
.to_shortname
||
5060 strcmp (current_target
.to_shortname
, "remote") != 0)
5061 error ("command can only be used with remote target");
5063 for (s
= exec_bfd
->sections
; s
; s
= s
->next
)
5065 if (!(s
->flags
& SEC_LOAD
))
5066 continue; /* skip non-loadable section */
5068 size
= bfd_get_section_size_before_reloc (s
);
5070 continue; /* skip zero-length section */
5072 sectname
= bfd_get_section_name (exec_bfd
, s
);
5073 if (args
&& strcmp (args
, sectname
) != 0)
5074 continue; /* not the section selected by user */
5076 matched
= 1; /* do this section */
5078 /* FIXME: assumes lma can fit into long */
5079 sprintf (buf
, "qCRC:%lx,%lx", (long) lma
, (long) size
);
5082 /* be clever; compute the host_crc before waiting for target reply */
5083 sectdata
= xmalloc (size
);
5084 old_chain
= make_cleanup (xfree
, sectdata
);
5085 bfd_get_section_contents (exec_bfd
, s
, sectdata
, 0, size
);
5086 host_crc
= crc32 ((unsigned char *) sectdata
, size
, 0xffffffff);
5088 getpkt (buf
, (rs
->remote_packet_size
), 0);
5090 error ("target memory fault, section %s, range 0x%s -- 0x%s",
5091 sectname
, paddr (lma
), paddr (lma
+ size
));
5093 error ("remote target does not support this operation");
5095 for (target_crc
= 0, tmp
= &buf
[1]; *tmp
; tmp
++)
5096 target_crc
= target_crc
* 16 + fromhex (*tmp
);
5098 printf_filtered ("Section %s, range 0x%s -- 0x%s: ",
5099 sectname
, paddr (lma
), paddr (lma
+ size
));
5100 if (host_crc
== target_crc
)
5101 printf_filtered ("matched.\n");
5104 printf_filtered ("MIS-MATCHED!\n");
5108 do_cleanups (old_chain
);
5111 warning ("One or more sections of the remote executable does not match\n\
5112 the loaded file\n");
5113 if (args
&& !matched
)
5114 printf_filtered ("No loaded section named '%s'.\n", args
);
5118 remote_query (int query_type
, char *buf
, char *outbuf
, int *bufsiz
)
5120 struct remote_state
*rs
= get_remote_state ();
5122 char *buf2
= alloca (rs
->remote_packet_size
);
5123 char *p2
= &buf2
[0];
5126 error ("null pointer to remote bufer size specified");
5128 /* minimum outbuf size is (rs->remote_packet_size) - if bufsiz is not large enough let
5129 the caller know and return what the minimum size is */
5130 /* Note: a zero bufsiz can be used to query the minimum buffer size */
5131 if (*bufsiz
< (rs
->remote_packet_size
))
5133 *bufsiz
= (rs
->remote_packet_size
);
5137 /* except for querying the minimum buffer size, target must be open */
5139 error ("remote query is only available after target open");
5141 /* we only take uppercase letters as query types, at least for now */
5142 if ((query_type
< 'A') || (query_type
> 'Z'))
5143 error ("invalid remote query type");
5146 error ("null remote query specified");
5149 error ("remote query requires a buffer to receive data");
5156 /* we used one buffer char for the remote protocol q command and another
5157 for the query type. As the remote protocol encapsulation uses 4 chars
5158 plus one extra in case we are debugging (remote_debug),
5159 we have PBUFZIZ - 7 left to pack the query string */
5161 while (buf
[i
] && (i
< ((rs
->remote_packet_size
) - 8)))
5163 /* bad caller may have sent forbidden characters */
5164 if ((!isprint (buf
[i
])) || (buf
[i
] == '$') || (buf
[i
] == '#'))
5165 error ("illegal characters in query string");
5173 error ("query larger than available buffer");
5179 getpkt (outbuf
, *bufsiz
, 0);
5185 remote_rcmd (char *command
,
5186 struct ui_file
*outbuf
)
5188 struct remote_state
*rs
= get_remote_state ();
5190 char *buf
= alloca (rs
->remote_packet_size
);
5194 error ("remote rcmd is only available after target open");
5196 /* Send a NULL command across as an empty command */
5197 if (command
== NULL
)
5200 /* The query prefix */
5201 strcpy (buf
, "qRcmd,");
5202 p
= strchr (buf
, '\0');
5204 if ((strlen (buf
) + strlen (command
) * 2 + 8/*misc*/) > (rs
->remote_packet_size
))
5205 error ("\"monitor\" command ``%s'' is too long\n", command
);
5207 /* Encode the actual command */
5208 bin2hex (command
, p
, 0);
5210 if (putpkt (buf
) < 0)
5211 error ("Communication problem with target\n");
5213 /* get/display the response */
5216 /* XXX - see also tracepoint.c:remote_get_noisy_reply() */
5218 getpkt (buf
, (rs
->remote_packet_size
), 0);
5220 error ("Target does not support this command\n");
5221 if (buf
[0] == 'O' && buf
[1] != 'K')
5223 remote_console_output (buf
+ 1); /* 'O' message from stub */
5226 if (strcmp (buf
, "OK") == 0)
5228 if (strlen (buf
) == 3 && buf
[0] == 'E'
5229 && isdigit (buf
[1]) && isdigit (buf
[2]))
5231 error ("Protocol error with Rcmd");
5233 for (p
= buf
; p
[0] != '\0' && p
[1] != '\0'; p
+= 2)
5235 char c
= (fromhex (p
[0]) << 4) + fromhex (p
[1]);
5236 fputc_unfiltered (c
, outbuf
);
5243 packet_command (char *args
, int from_tty
)
5245 struct remote_state
*rs
= get_remote_state ();
5246 char *buf
= alloca (rs
->remote_packet_size
);
5249 error ("command can only be used with remote target");
5252 error ("remote-packet command requires packet text as argument");
5254 puts_filtered ("sending: ");
5255 print_packet (args
);
5256 puts_filtered ("\n");
5259 getpkt (buf
, (rs
->remote_packet_size
), 0);
5260 puts_filtered ("received: ");
5262 puts_filtered ("\n");
5266 /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------------- */
5268 static void display_thread_info (struct gdb_ext_thread_info
*info
);
5270 static void threadset_test_cmd (char *cmd
, int tty
);
5272 static void threadalive_test (char *cmd
, int tty
);
5274 static void threadlist_test_cmd (char *cmd
, int tty
);
5276 int get_and_display_threadinfo (threadref
* ref
);
5278 static void threadinfo_test_cmd (char *cmd
, int tty
);
5280 static int thread_display_step (threadref
* ref
, void *context
);
5282 static void threadlist_update_test_cmd (char *cmd
, int tty
);
5284 static void init_remote_threadtests (void);
5286 #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid */
5289 threadset_test_cmd (char *cmd
, int tty
)
5291 int sample_thread
= SAMPLE_THREAD
;
5293 printf_filtered ("Remote threadset test\n");
5294 set_thread (sample_thread
, 1);
5299 threadalive_test (char *cmd
, int tty
)
5301 int sample_thread
= SAMPLE_THREAD
;
5303 if (remote_thread_alive (pid_to_ptid (sample_thread
)))
5304 printf_filtered ("PASS: Thread alive test\n");
5306 printf_filtered ("FAIL: Thread alive test\n");
5309 void output_threadid (char *title
, threadref
* ref
);
5312 output_threadid (char *title
, threadref
*ref
)
5316 pack_threadid (&hexid
[0], ref
); /* Convert threead id into hex */
5318 printf_filtered ("%s %s\n", title
, (&hexid
[0]));
5322 threadlist_test_cmd (char *cmd
, int tty
)
5325 threadref nextthread
;
5326 int done
, result_count
;
5327 threadref threadlist
[3];
5329 printf_filtered ("Remote Threadlist test\n");
5330 if (!remote_get_threadlist (startflag
, &nextthread
, 3, &done
,
5331 &result_count
, &threadlist
[0]))
5332 printf_filtered ("FAIL: threadlist test\n");
5335 threadref
*scan
= threadlist
;
5336 threadref
*limit
= scan
+ result_count
;
5338 while (scan
< limit
)
5339 output_threadid (" thread ", scan
++);
5344 display_thread_info (struct gdb_ext_thread_info
*info
)
5346 output_threadid ("Threadid: ", &info
->threadid
);
5347 printf_filtered ("Name: %s\n ", info
->shortname
);
5348 printf_filtered ("State: %s\n", info
->display
);
5349 printf_filtered ("other: %s\n\n", info
->more_display
);
5353 get_and_display_threadinfo (threadref
*ref
)
5357 struct gdb_ext_thread_info threadinfo
;
5359 set
= TAG_THREADID
| TAG_EXISTS
| TAG_THREADNAME
5360 | TAG_MOREDISPLAY
| TAG_DISPLAY
;
5361 if (0 != (result
= remote_get_threadinfo (ref
, set
, &threadinfo
)))
5362 display_thread_info (&threadinfo
);
5367 threadinfo_test_cmd (char *cmd
, int tty
)
5369 int athread
= SAMPLE_THREAD
;
5373 int_to_threadref (&thread
, athread
);
5374 printf_filtered ("Remote Threadinfo test\n");
5375 if (!get_and_display_threadinfo (&thread
))
5376 printf_filtered ("FAIL cannot get thread info\n");
5380 thread_display_step (threadref
*ref
, void *context
)
5382 /* output_threadid(" threadstep ",ref); *//* simple test */
5383 return get_and_display_threadinfo (ref
);
5387 threadlist_update_test_cmd (char *cmd
, int tty
)
5389 printf_filtered ("Remote Threadlist update test\n");
5390 remote_threadlist_iterator (thread_display_step
, 0, CRAZY_MAX_THREADS
);
5394 init_remote_threadtests (void)
5396 add_com ("tlist", class_obscure
, threadlist_test_cmd
,
5397 "Fetch and print the remote list of thread identifiers, one pkt only");
5398 add_com ("tinfo", class_obscure
, threadinfo_test_cmd
,
5399 "Fetch and display info about one thread");
5400 add_com ("tset", class_obscure
, threadset_test_cmd
,
5401 "Test setting to a different thread");
5402 add_com ("tupd", class_obscure
, threadlist_update_test_cmd
,
5403 "Iterate through updating all remote thread info");
5404 add_com ("talive", class_obscure
, threadalive_test
,
5405 " Remote thread alive test ");
5410 /* Convert a thread ID to a string. Returns the string in a static
5414 remote_pid_to_str (ptid_t ptid
)
5416 static char buf
[30];
5418 sprintf (buf
, "Thread %d", PIDGET (ptid
));
5423 init_remote_ops (void)
5425 remote_ops
.to_shortname
= "remote";
5426 remote_ops
.to_longname
= "Remote serial target in gdb-specific protocol";
5428 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
5429 Specify the serial device it is connected to\n\
5430 (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).";
5431 remote_ops
.to_open
= remote_open
;
5432 remote_ops
.to_close
= remote_close
;
5433 remote_ops
.to_detach
= remote_detach
;
5434 remote_ops
.to_resume
= remote_resume
;
5435 remote_ops
.to_wait
= remote_wait
;
5436 remote_ops
.to_fetch_registers
= remote_fetch_registers
;
5437 remote_ops
.to_store_registers
= remote_store_registers
;
5438 remote_ops
.to_prepare_to_store
= remote_prepare_to_store
;
5439 remote_ops
.to_xfer_memory
= remote_xfer_memory
;
5440 remote_ops
.to_files_info
= remote_files_info
;
5441 remote_ops
.to_insert_breakpoint
= remote_insert_breakpoint
;
5442 remote_ops
.to_remove_breakpoint
= remote_remove_breakpoint
;
5443 remote_ops
.to_stopped_by_watchpoint
= remote_stopped_by_watchpoint
;
5444 remote_ops
.to_stopped_data_address
= remote_stopped_data_address
;
5445 remote_ops
.to_can_use_hw_breakpoint
= remote_check_watch_resources
;
5446 remote_ops
.to_insert_hw_breakpoint
= remote_insert_hw_breakpoint
;
5447 remote_ops
.to_remove_hw_breakpoint
= remote_remove_hw_breakpoint
;
5448 remote_ops
.to_insert_watchpoint
= remote_insert_watchpoint
;
5449 remote_ops
.to_remove_watchpoint
= remote_remove_watchpoint
;
5450 remote_ops
.to_kill
= remote_kill
;
5451 remote_ops
.to_load
= generic_load
;
5452 remote_ops
.to_mourn_inferior
= remote_mourn
;
5453 remote_ops
.to_thread_alive
= remote_thread_alive
;
5454 remote_ops
.to_find_new_threads
= remote_threads_info
;
5455 remote_ops
.to_pid_to_str
= remote_pid_to_str
;
5456 remote_ops
.to_extra_thread_info
= remote_threads_extra_info
;
5457 remote_ops
.to_stop
= remote_stop
;
5458 remote_ops
.to_query
= remote_query
;
5459 remote_ops
.to_rcmd
= remote_rcmd
;
5460 remote_ops
.to_stratum
= process_stratum
;
5461 remote_ops
.to_has_all_memory
= 1;
5462 remote_ops
.to_has_memory
= 1;
5463 remote_ops
.to_has_stack
= 1;
5464 remote_ops
.to_has_registers
= 1;
5465 remote_ops
.to_has_execution
= 1;
5466 remote_ops
.to_has_thread_control
= tc_schedlock
; /* can lock scheduler */
5467 remote_ops
.to_magic
= OPS_MAGIC
;
5470 /* Set up the extended remote vector by making a copy of the standard
5471 remote vector and adding to it. */
5474 init_extended_remote_ops (void)
5476 extended_remote_ops
= remote_ops
;
5478 extended_remote_ops
.to_shortname
= "extended-remote";
5479 extended_remote_ops
.to_longname
=
5480 "Extended remote serial target in gdb-specific protocol";
5481 extended_remote_ops
.to_doc
=
5482 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
5483 Specify the serial device it is connected to (e.g. /dev/ttya).",
5484 extended_remote_ops
.to_open
= extended_remote_open
;
5485 extended_remote_ops
.to_create_inferior
= extended_remote_create_inferior
;
5486 extended_remote_ops
.to_mourn_inferior
= extended_remote_mourn
;
5490 * Command: info remote-process
5492 * This implements Cisco's version of the "info proc" command.
5494 * This query allows the target stub to return an arbitrary string
5495 * (or strings) giving arbitrary information about the target process.
5496 * This is optional; the target stub isn't required to implement it.
5498 * Syntax: qfProcessInfo request first string
5499 * qsProcessInfo request subsequent string
5500 * reply: 'O'<hex-encoded-string>
5501 * 'l' last reply (empty)
5505 remote_info_process (char *args
, int from_tty
)
5507 struct remote_state
*rs
= get_remote_state ();
5508 char *buf
= alloca (rs
->remote_packet_size
);
5510 if (remote_desc
== 0)
5511 error ("Command can only be used when connected to the remote target.");
5513 putpkt ("qfProcessInfo");
5514 getpkt (buf
, (rs
->remote_packet_size
), 0);
5516 return; /* Silently: target does not support this feature. */
5519 error ("info proc: target error.");
5521 while (buf
[0] == 'O') /* Capitol-O packet */
5523 remote_console_output (&buf
[1]);
5524 putpkt ("qsProcessInfo");
5525 getpkt (buf
, (rs
->remote_packet_size
), 0);
5534 remote_cisco_open (char *name
, int from_tty
)
5538 error ("To open a remote debug connection, you need to specify what \n"
5539 "device is attached to the remote system (e.g. host:port).");
5541 /* See FIXME above */
5542 wait_forever_enabled_p
= 1;
5544 target_preopen (from_tty
);
5546 unpush_target (&remote_cisco_ops
);
5548 remote_desc
= remote_serial_open (name
);
5550 perror_with_name (name
);
5553 * If a baud rate was specified on the gdb command line it will
5554 * be greater than the initial value of -1. If it is, use it otherwise
5558 baud_rate
= (baud_rate
> 0) ? baud_rate
: 9600;
5559 if (serial_setbaudrate (remote_desc
, baud_rate
))
5561 serial_close (remote_desc
);
5562 perror_with_name (name
);
5565 serial_raw (remote_desc
);
5567 /* If there is something sitting in the buffer we might take it as a
5568 response to a command, which would be bad. */
5569 serial_flush_input (remote_desc
);
5573 puts_filtered ("Remote debugging using ");
5574 puts_filtered (name
);
5575 puts_filtered ("\n");
5578 remote_cisco_mode
= 1;
5580 push_target (&remote_cisco_ops
); /* Switch to using cisco target now */
5582 init_all_packet_configs ();
5584 general_thread
= -2;
5585 continue_thread
= -2;
5587 /* Probe for ability to use "ThreadInfo" query, as required. */
5588 use_threadinfo_query
= 1;
5589 use_threadextra_query
= 1;
5591 /* Without this, some commands which require an active target (such
5592 as kill) won't work. This variable serves (at least) double duty
5593 as both the pid of the target process (if it has such), and as a
5594 flag indicating that a target is active. These functions should
5595 be split out into seperate variables, especially since GDB will
5596 someday have a notion of debugging several processes. */
5597 inferior_ptid
= pid_to_ptid (MAGIC_NULL_PID
);
5599 /* Start the remote connection; if error, discard this target. See
5600 the comments in remote_open_1() for further details such as the
5601 need to re-throw the exception. */
5602 ex
= catch_exceptions (uiout
,
5603 remote_start_remote_dummy
, NULL
,
5604 "Couldn't establish connection to remote"
5610 throw_exception (ex
);
5615 remote_cisco_close (int quitting
)
5617 remote_cisco_mode
= 0;
5618 remote_close (quitting
);
5622 remote_cisco_mourn (void)
5624 remote_mourn_1 (&remote_cisco_ops
);
5636 /* Shared between readsocket() and readtty(). The size is arbitrary,
5637 however all targets are known to support a 400 character packet. */
5638 static char tty_input
[400];
5640 static int escape_count
;
5641 static int echo_check
;
5642 extern int quit_flag
;
5649 /* Loop until the socket doesn't have any more data */
5651 while ((data
= readchar (0)) >= 0)
5653 /* Check for the escape sequence */
5656 /* If this is the fourth escape, get out */
5657 if (++escape_count
== 4)
5662 { /* This is a '|', but not the fourth in a row.
5663 Continue without echoing it. If it isn't actually
5664 one of four in a row, it'll be echoed later. */
5671 /* Ensure any pending '|'s are flushed. */
5673 for (; escape_count
> 0; escape_count
--)
5677 if (data
== '\r') /* If this is a return character, */
5678 continue; /* - just supress it. */
5680 if (echo_check
!= -1) /* Check for echo of user input. */
5682 if (tty_input
[echo_check
] == data
)
5684 gdb_assert (echo_check
<= sizeof (tty_input
));
5685 echo_check
++; /* Character matched user input: */
5686 continue; /* Continue without echoing it. */
5688 else if ((data
== '\n') && (tty_input
[echo_check
] == '\r'))
5689 { /* End of the line (and of echo checking). */
5690 echo_check
= -1; /* No more echo supression */
5691 continue; /* Continue without echoing. */
5694 { /* Failed check for echo of user input.
5695 We now have some suppressed output to flush! */
5698 for (j
= 0; j
< echo_check
; j
++)
5699 putchar (tty_input
[j
]);
5703 putchar (data
); /* Default case: output the char. */
5706 if (data
== SERIAL_TIMEOUT
) /* Timeout returned from readchar. */
5707 return READ_MORE
; /* Try to read some more */
5709 return FATAL_ERROR
; /* Trouble, bail out */
5717 /* First, read a buffer full from the terminal */
5718 tty_bytecount
= read (fileno (stdin
), tty_input
, sizeof (tty_input
) - 1);
5719 if (tty_bytecount
== -1)
5721 perror ("readtty: read failed");
5725 /* Remove a quoted newline. */
5726 if (tty_input
[tty_bytecount
- 1] == '\n' &&
5727 tty_input
[tty_bytecount
- 2] == '\\') /* line ending in backslash */
5729 tty_input
[--tty_bytecount
] = 0; /* remove newline */
5730 tty_input
[--tty_bytecount
] = 0; /* remove backslash */
5733 /* Turn trailing newlines into returns */
5734 if (tty_input
[tty_bytecount
- 1] == '\n')
5735 tty_input
[tty_bytecount
- 1] = '\r';
5737 /* If the line consists of a ~, enter debugging mode. */
5738 if ((tty_input
[0] == '~') && (tty_bytecount
== 2))
5741 /* Make this a zero terminated string and write it out */
5742 tty_input
[tty_bytecount
] = 0;
5743 if (serial_write (remote_desc
, tty_input
, tty_bytecount
))
5745 perror_with_name ("readtty: write failed");
5755 fd_set input
; /* file descriptors for select */
5756 int tablesize
; /* max number of FDs for select */
5763 tablesize
= 8 * sizeof (input
);
5767 /* Check for anything from our socket - doesn't block. Note that
5768 this must be done *before* the select as there may be
5769 buffered I/O waiting to be processed. */
5771 if ((status
= readsocket ()) == FATAL_ERROR
)
5773 error ("Debugging terminated by communications error");
5775 else if (status
!= READ_MORE
)
5780 fflush (stdout
); /* Flush output before blocking */
5782 /* Now block on more socket input or TTY input */
5785 FD_SET (fileno (stdin
), &input
);
5786 FD_SET (deprecated_serial_fd (remote_desc
), &input
);
5788 status
= select (tablesize
, &input
, 0, 0, 0);
5789 if ((status
== -1) && (errno
!= EINTR
))
5791 error ("Communications error on select %d", errno
);
5794 /* Handle Control-C typed */
5798 if ((++quit_count
) == 2)
5800 if (query ("Interrupt GDB? "))
5802 printf_filtered ("Interrupted by user.\n");
5803 throw_exception (RETURN_QUIT
);
5810 serial_send_break (remote_desc
);
5812 serial_write (remote_desc
, "\003", 1);
5817 /* Handle console input */
5819 if (FD_ISSET (fileno (stdin
), &input
))
5823 status
= readtty ();
5824 if (status
== READ_MORE
)
5827 return status
; /* telnet session ended */
5833 remote_cisco_wait (ptid_t ptid
, struct target_waitstatus
*status
)
5835 if (minitelnet () != ENTER_DEBUG
)
5837 error ("Debugging session terminated by protocol error");
5840 return remote_wait (ptid
, status
);
5844 init_remote_cisco_ops (void)
5846 remote_cisco_ops
.to_shortname
= "cisco";
5847 remote_cisco_ops
.to_longname
= "Remote serial target in cisco-specific protocol";
5848 remote_cisco_ops
.to_doc
=
5849 "Use a remote machine via TCP, using a cisco-specific protocol.\n\
5850 Specify the serial device it is connected to (e.g. host:2020).";
5851 remote_cisco_ops
.to_open
= remote_cisco_open
;
5852 remote_cisco_ops
.to_close
= remote_cisco_close
;
5853 remote_cisco_ops
.to_detach
= remote_detach
;
5854 remote_cisco_ops
.to_resume
= remote_resume
;
5855 remote_cisco_ops
.to_wait
= remote_cisco_wait
;
5856 remote_cisco_ops
.to_fetch_registers
= remote_fetch_registers
;
5857 remote_cisco_ops
.to_store_registers
= remote_store_registers
;
5858 remote_cisco_ops
.to_prepare_to_store
= remote_prepare_to_store
;
5859 remote_cisco_ops
.to_xfer_memory
= remote_xfer_memory
;
5860 remote_cisco_ops
.to_files_info
= remote_files_info
;
5861 remote_cisco_ops
.to_insert_breakpoint
= remote_insert_breakpoint
;
5862 remote_cisco_ops
.to_remove_breakpoint
= remote_remove_breakpoint
;
5863 remote_cisco_ops
.to_remove_hw_breakpoint
= remote_remove_hw_breakpoint
;
5864 remote_cisco_ops
.to_insert_hw_breakpoint
= remote_insert_hw_breakpoint
;
5865 remote_cisco_ops
.to_insert_watchpoint
= remote_insert_watchpoint
;
5866 remote_cisco_ops
.to_remove_watchpoint
= remote_remove_watchpoint
;
5867 remote_cisco_ops
.to_stopped_by_watchpoint
= remote_stopped_by_watchpoint
;
5868 remote_cisco_ops
.to_stopped_data_address
= remote_stopped_data_address
;
5869 remote_cisco_ops
.to_can_use_hw_breakpoint
= remote_check_watch_resources
;
5870 remote_cisco_ops
.to_kill
= remote_kill
;
5871 remote_cisco_ops
.to_load
= generic_load
;
5872 remote_cisco_ops
.to_mourn_inferior
= remote_cisco_mourn
;
5873 remote_cisco_ops
.to_thread_alive
= remote_thread_alive
;
5874 remote_cisco_ops
.to_find_new_threads
= remote_threads_info
;
5875 remote_cisco_ops
.to_pid_to_str
= remote_pid_to_str
;
5876 remote_cisco_ops
.to_extra_thread_info
= remote_threads_extra_info
;
5877 remote_cisco_ops
.to_stratum
= process_stratum
;
5878 remote_cisco_ops
.to_has_all_memory
= 1;
5879 remote_cisco_ops
.to_has_memory
= 1;
5880 remote_cisco_ops
.to_has_stack
= 1;
5881 remote_cisco_ops
.to_has_registers
= 1;
5882 remote_cisco_ops
.to_has_execution
= 1;
5883 remote_cisco_ops
.to_magic
= OPS_MAGIC
;
5887 remote_can_async_p (void)
5889 /* We're async whenever the serial device is. */
5890 return (current_target
.to_async_mask_value
) && serial_can_async_p (remote_desc
);
5894 remote_is_async_p (void)
5896 /* We're async whenever the serial device is. */
5897 return (current_target
.to_async_mask_value
) && serial_is_async_p (remote_desc
);
5900 /* Pass the SERIAL event on and up to the client. One day this code
5901 will be able to delay notifying the client of an event until the
5902 point where an entire packet has been received. */
5904 static void (*async_client_callback
) (enum inferior_event_type event_type
, void *context
);
5905 static void *async_client_context
;
5906 static serial_event_ftype remote_async_serial_handler
;
5909 remote_async_serial_handler (struct serial
*scb
, void *context
)
5911 /* Don't propogate error information up to the client. Instead let
5912 the client find out about the error by querying the target. */
5913 async_client_callback (INF_REG_EVENT
, async_client_context
);
5917 remote_async (void (*callback
) (enum inferior_event_type event_type
, void *context
), void *context
)
5919 if (current_target
.to_async_mask_value
== 0)
5920 internal_error (__FILE__
, __LINE__
,
5921 "Calling remote_async when async is masked");
5923 if (callback
!= NULL
)
5925 serial_async (remote_desc
, remote_async_serial_handler
, NULL
);
5926 async_client_callback
= callback
;
5927 async_client_context
= context
;
5930 serial_async (remote_desc
, NULL
, NULL
);
5933 /* Target async and target extended-async.
5935 This are temporary targets, until it is all tested. Eventually
5936 async support will be incorporated int the usual 'remote'
5940 init_remote_async_ops (void)
5942 remote_async_ops
.to_shortname
= "async";
5943 remote_async_ops
.to_longname
= "Remote serial target in async version of the gdb-specific protocol";
5944 remote_async_ops
.to_doc
=
5945 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
5946 Specify the serial device it is connected to (e.g. /dev/ttya).";
5947 remote_async_ops
.to_open
= remote_async_open
;
5948 remote_async_ops
.to_close
= remote_close
;
5949 remote_async_ops
.to_detach
= remote_async_detach
;
5950 remote_async_ops
.to_resume
= remote_async_resume
;
5951 remote_async_ops
.to_wait
= remote_async_wait
;
5952 remote_async_ops
.to_fetch_registers
= remote_fetch_registers
;
5953 remote_async_ops
.to_store_registers
= remote_store_registers
;
5954 remote_async_ops
.to_prepare_to_store
= remote_prepare_to_store
;
5955 remote_async_ops
.to_xfer_memory
= remote_xfer_memory
;
5956 remote_async_ops
.to_files_info
= remote_files_info
;
5957 remote_async_ops
.to_insert_breakpoint
= remote_insert_breakpoint
;
5958 remote_async_ops
.to_remove_breakpoint
= remote_remove_breakpoint
;
5959 remote_async_ops
.to_can_use_hw_breakpoint
= remote_check_watch_resources
;
5960 remote_async_ops
.to_insert_hw_breakpoint
= remote_insert_hw_breakpoint
;
5961 remote_async_ops
.to_remove_hw_breakpoint
= remote_remove_hw_breakpoint
;
5962 remote_async_ops
.to_insert_watchpoint
= remote_insert_watchpoint
;
5963 remote_async_ops
.to_remove_watchpoint
= remote_remove_watchpoint
;
5964 remote_async_ops
.to_stopped_by_watchpoint
= remote_stopped_by_watchpoint
;
5965 remote_async_ops
.to_stopped_data_address
= remote_stopped_data_address
;
5966 remote_async_ops
.to_terminal_inferior
= remote_async_terminal_inferior
;
5967 remote_async_ops
.to_terminal_ours
= remote_async_terminal_ours
;
5968 remote_async_ops
.to_kill
= remote_async_kill
;
5969 remote_async_ops
.to_load
= generic_load
;
5970 remote_async_ops
.to_mourn_inferior
= remote_async_mourn
;
5971 remote_async_ops
.to_thread_alive
= remote_thread_alive
;
5972 remote_async_ops
.to_find_new_threads
= remote_threads_info
;
5973 remote_async_ops
.to_pid_to_str
= remote_pid_to_str
;
5974 remote_async_ops
.to_extra_thread_info
= remote_threads_extra_info
;
5975 remote_async_ops
.to_stop
= remote_stop
;
5976 remote_async_ops
.to_query
= remote_query
;
5977 remote_async_ops
.to_rcmd
= remote_rcmd
;
5978 remote_async_ops
.to_stratum
= process_stratum
;
5979 remote_async_ops
.to_has_all_memory
= 1;
5980 remote_async_ops
.to_has_memory
= 1;
5981 remote_async_ops
.to_has_stack
= 1;
5982 remote_async_ops
.to_has_registers
= 1;
5983 remote_async_ops
.to_has_execution
= 1;
5984 remote_async_ops
.to_has_thread_control
= tc_schedlock
; /* can lock scheduler */
5985 remote_async_ops
.to_can_async_p
= remote_can_async_p
;
5986 remote_async_ops
.to_is_async_p
= remote_is_async_p
;
5987 remote_async_ops
.to_async
= remote_async
;
5988 remote_async_ops
.to_async_mask_value
= 1;
5989 remote_async_ops
.to_magic
= OPS_MAGIC
;
5992 /* Set up the async extended remote vector by making a copy of the standard
5993 remote vector and adding to it. */
5996 init_extended_async_remote_ops (void)
5998 extended_async_remote_ops
= remote_async_ops
;
6000 extended_async_remote_ops
.to_shortname
= "extended-async";
6001 extended_async_remote_ops
.to_longname
=
6002 "Extended remote serial target in async gdb-specific protocol";
6003 extended_async_remote_ops
.to_doc
=
6004 "Use a remote computer via a serial line, using an async gdb-specific protocol.\n\
6005 Specify the serial device it is connected to (e.g. /dev/ttya).",
6006 extended_async_remote_ops
.to_open
= extended_remote_async_open
;
6007 extended_async_remote_ops
.to_create_inferior
= extended_remote_async_create_inferior
;
6008 extended_async_remote_ops
.to_mourn_inferior
= extended_remote_mourn
;
6012 set_remote_cmd (char *args
, int from_tty
)
6017 show_remote_cmd (char *args
, int from_tty
)
6019 /* FIXME: cagney/2002-06-15: This function should iterate over
6020 remote_show_cmdlist for a list of sub commands to show. */
6021 show_remote_protocol_Z_packet_cmd (args
, from_tty
, NULL
);
6022 show_remote_protocol_e_packet_cmd (args
, from_tty
, NULL
);
6023 show_remote_protocol_E_packet_cmd (args
, from_tty
, NULL
);
6024 show_remote_protocol_P_packet_cmd (args
, from_tty
, NULL
);
6025 show_remote_protocol_qSymbol_packet_cmd (args
, from_tty
, NULL
);
6026 show_remote_protocol_binary_download_cmd (args
, from_tty
, NULL
);
6030 build_remote_gdbarch_data (void)
6032 remote_address_size
= TARGET_ADDR_BIT
;
6035 /* Saved pointer to previous owner of the new_objfile event. */
6036 static void (*remote_new_objfile_chain
) (struct objfile
*);
6038 /* Function to be called whenever a new objfile (shlib) is detected. */
6040 remote_new_objfile (struct objfile
*objfile
)
6042 if (remote_desc
!= 0) /* Have a remote connection */
6044 remote_check_symbols (objfile
);
6046 /* Call predecessor on chain, if any. */
6047 if (remote_new_objfile_chain
!= 0 &&
6049 remote_new_objfile_chain (objfile
);
6053 _initialize_remote (void)
6055 static struct cmd_list_element
*remote_set_cmdlist
;
6056 static struct cmd_list_element
*remote_show_cmdlist
;
6057 struct cmd_list_element
*tmpcmd
;
6059 /* architecture specific data */
6060 remote_gdbarch_data_handle
= register_gdbarch_data (init_remote_state
,
6063 /* Old tacky stuff. NOTE: This comes after the remote protocol so
6064 that the remote protocol has been initialized. */
6065 register_gdbarch_swap (&remote_address_size
,
6066 sizeof (&remote_address_size
), NULL
);
6067 register_gdbarch_swap (NULL
, 0, build_remote_gdbarch_data
);
6070 add_target (&remote_ops
);
6072 init_extended_remote_ops ();
6073 add_target (&extended_remote_ops
);
6075 init_remote_async_ops ();
6076 add_target (&remote_async_ops
);
6078 init_extended_async_remote_ops ();
6079 add_target (&extended_async_remote_ops
);
6081 init_remote_cisco_ops ();
6082 add_target (&remote_cisco_ops
);
6084 /* Hook into new objfile notification. */
6085 remote_new_objfile_chain
= target_new_objfile_hook
;
6086 target_new_objfile_hook
= remote_new_objfile
;
6089 init_remote_threadtests ();
6092 /* set/show remote ... */
6094 add_prefix_cmd ("remote", class_maintenance
, set_remote_cmd
, "\
6095 Remote protocol specific variables\n\
6096 Configure various remote-protocol specific variables such as\n\
6097 the packets being used",
6098 &remote_set_cmdlist
, "set remote ",
6099 0/*allow-unknown*/, &setlist
);
6100 add_prefix_cmd ("remote", class_maintenance
, show_remote_cmd
, "\
6101 Remote protocol specific variables\n\
6102 Configure various remote-protocol specific variables such as\n\
6103 the packets being used",
6104 &remote_show_cmdlist
, "show remote ",
6105 0/*allow-unknown*/, &showlist
);
6107 add_cmd ("compare-sections", class_obscure
, compare_sections_command
,
6108 "Compare section data on target to the exec file.\n\
6109 Argument is a single section name (default: all loaded sections).",
6112 add_cmd ("packet", class_maintenance
, packet_command
,
6113 "Send an arbitrary packet to a remote target.\n\
6114 maintenance packet TEXT\n\
6115 If GDB is talking to an inferior via the GDB serial protocol, then\n\
6116 this command sends the string TEXT to the inferior, and displays the\n\
6117 response packet. GDB supplies the initial `$' character, and the\n\
6118 terminating `#' character and checksum.",
6121 add_setshow_boolean_cmd ("remotebreak", no_class
, &remote_break
,
6122 "Set whether to send break if interrupted.\n",
6123 "Show whether to send break if interrupted.\n",
6125 &setlist
, &showlist
);
6127 /* Install commands for configuring memory read/write packets. */
6129 add_cmd ("remotewritesize", no_class
, set_memory_write_packet_size
,
6130 "Set the maximum number of bytes per memory write packet (deprecated).\n",
6132 add_cmd ("remotewritesize", no_class
, show_memory_write_packet_size
,
6133 "Show the maximum number of bytes per memory write packet (deprecated).\n",
6135 add_cmd ("memory-write-packet-size", no_class
,
6136 set_memory_write_packet_size
,
6137 "Set the maximum number of bytes per memory-write packet.\n"
6138 "Specify the number of bytes in a packet or 0 (zero) for the\n"
6139 "default packet size. The actual limit is further reduced\n"
6140 "dependent on the target. Specify ``fixed'' to disable the\n"
6141 "further restriction and ``limit'' to enable that restriction\n",
6142 &remote_set_cmdlist
);
6143 add_cmd ("memory-read-packet-size", no_class
,
6144 set_memory_read_packet_size
,
6145 "Set the maximum number of bytes per memory-read packet.\n"
6146 "Specify the number of bytes in a packet or 0 (zero) for the\n"
6147 "default packet size. The actual limit is further reduced\n"
6148 "dependent on the target. Specify ``fixed'' to disable the\n"
6149 "further restriction and ``limit'' to enable that restriction\n",
6150 &remote_set_cmdlist
);
6151 add_cmd ("memory-write-packet-size", no_class
,
6152 show_memory_write_packet_size
,
6153 "Show the maximum number of bytes per memory-write packet.\n",
6154 &remote_show_cmdlist
);
6155 add_cmd ("memory-read-packet-size", no_class
,
6156 show_memory_read_packet_size
,
6157 "Show the maximum number of bytes per memory-read packet.\n",
6158 &remote_show_cmdlist
);
6160 add_setshow_cmd ("hardware-watchpoint-limit", no_class
,
6161 var_zinteger
, &remote_hw_watchpoint_limit
, "\
6162 Set the maximum number of target hardware watchpoints.\n\
6163 Specify a negative limit for unlimited.", "\
6164 Show the maximum number of target hardware watchpoints.\n",
6165 NULL
, NULL
, &remote_set_cmdlist
, &remote_show_cmdlist
);
6166 add_setshow_cmd ("hardware-breakpoint-limit", no_class
,
6167 var_zinteger
, &remote_hw_breakpoint_limit
, "\
6168 Set the maximum number of target hardware breakpoints.\n\
6169 Specify a negative limit for unlimited.", "\
6170 Show the maximum number of target hardware breakpoints.\n",
6171 NULL
, NULL
, &remote_set_cmdlist
, &remote_show_cmdlist
);
6174 (add_set_cmd ("remoteaddresssize", class_obscure
,
6175 var_integer
, (char *) &remote_address_size
,
6176 "Set the maximum size of the address (in bits) \
6177 in a memory packet.\n",
6181 add_packet_config_cmd (&remote_protocol_binary_download
,
6182 "X", "binary-download",
6183 set_remote_protocol_binary_download_cmd
,
6184 show_remote_protocol_binary_download_cmd
,
6185 &remote_set_cmdlist
, &remote_show_cmdlist
,
6188 /* XXXX - should ``set remotebinarydownload'' be retained for
6191 (add_set_cmd ("remotebinarydownload", no_class
,
6192 var_boolean
, (char *) &remote_binary_download
,
6193 "Set binary downloads.\n", &setlist
),
6197 add_info ("remote-process", remote_info_process
,
6198 "Query the remote system for process info.");
6200 add_packet_config_cmd (&remote_protocol_qSymbol
,
6201 "qSymbol", "symbol-lookup",
6202 set_remote_protocol_qSymbol_packet_cmd
,
6203 show_remote_protocol_qSymbol_packet_cmd
,
6204 &remote_set_cmdlist
, &remote_show_cmdlist
,
6207 add_packet_config_cmd (&remote_protocol_e
,
6208 "e", "step-over-range",
6209 set_remote_protocol_e_packet_cmd
,
6210 show_remote_protocol_e_packet_cmd
,
6211 &remote_set_cmdlist
, &remote_show_cmdlist
,
6213 /* Disable by default. The ``e'' packet has nasty interactions with
6214 the threading code - it relies on global state. */
6215 remote_protocol_e
.detect
= AUTO_BOOLEAN_FALSE
;
6216 update_packet_config (&remote_protocol_e
);
6218 add_packet_config_cmd (&remote_protocol_E
,
6219 "E", "step-over-range-w-signal",
6220 set_remote_protocol_E_packet_cmd
,
6221 show_remote_protocol_E_packet_cmd
,
6222 &remote_set_cmdlist
, &remote_show_cmdlist
,
6224 /* Disable by default. The ``e'' packet has nasty interactions with
6225 the threading code - it relies on global state. */
6226 remote_protocol_E
.detect
= AUTO_BOOLEAN_FALSE
;
6227 update_packet_config (&remote_protocol_E
);
6229 add_packet_config_cmd (&remote_protocol_P
,
6230 "P", "set-register",
6231 set_remote_protocol_P_packet_cmd
,
6232 show_remote_protocol_P_packet_cmd
,
6233 &remote_set_cmdlist
, &remote_show_cmdlist
,
6236 add_packet_config_cmd (&remote_protocol_Z
[Z_PACKET_SOFTWARE_BP
],
6237 "Z0", "software-breakpoint",
6238 set_remote_protocol_Z_software_bp_packet_cmd
,
6239 show_remote_protocol_Z_software_bp_packet_cmd
,
6240 &remote_set_cmdlist
, &remote_show_cmdlist
,
6243 add_packet_config_cmd (&remote_protocol_Z
[Z_PACKET_HARDWARE_BP
],
6244 "Z1", "hardware-breakpoint",
6245 set_remote_protocol_Z_hardware_bp_packet_cmd
,
6246 show_remote_protocol_Z_hardware_bp_packet_cmd
,
6247 &remote_set_cmdlist
, &remote_show_cmdlist
,
6250 add_packet_config_cmd (&remote_protocol_Z
[Z_PACKET_WRITE_WP
],
6251 "Z2", "write-watchpoint",
6252 set_remote_protocol_Z_write_wp_packet_cmd
,
6253 show_remote_protocol_Z_write_wp_packet_cmd
,
6254 &remote_set_cmdlist
, &remote_show_cmdlist
,
6257 add_packet_config_cmd (&remote_protocol_Z
[Z_PACKET_READ_WP
],
6258 "Z3", "read-watchpoint",
6259 set_remote_protocol_Z_read_wp_packet_cmd
,
6260 show_remote_protocol_Z_read_wp_packet_cmd
,
6261 &remote_set_cmdlist
, &remote_show_cmdlist
,
6264 add_packet_config_cmd (&remote_protocol_Z
[Z_PACKET_ACCESS_WP
],
6265 "Z4", "access-watchpoint",
6266 set_remote_protocol_Z_access_wp_packet_cmd
,
6267 show_remote_protocol_Z_access_wp_packet_cmd
,
6268 &remote_set_cmdlist
, &remote_show_cmdlist
,
6271 /* Keep the old ``set remote Z-packet ...'' working. */
6272 add_setshow_auto_boolean_cmd ("Z-packet", class_obscure
,
6273 &remote_Z_packet_detect
, "\
6274 Set use of remote protocol `Z' packets",
6275 "Show use of remote protocol `Z' packets ",
6276 set_remote_protocol_Z_packet_cmd
,
6277 show_remote_protocol_Z_packet_cmd
,
6278 &remote_set_cmdlist
, &remote_show_cmdlist
);