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 #include "remote-fileio.h"
60 /* Prototypes for local functions */
61 static void cleanup_sigint_signal_handler (void *dummy
);
62 static void initialize_sigint_signal_handler (void);
63 static int getpkt_sane (char *buf
, long sizeof_buf
, int forever
);
65 static void handle_remote_sigint (int);
66 static void handle_remote_sigint_twice (int);
67 static void async_remote_interrupt (gdb_client_data
);
68 void async_remote_interrupt_twice (gdb_client_data
);
70 static void build_remote_gdbarch_data (void);
72 static void remote_files_info (struct target_ops
*ignore
);
74 static int remote_xfer_memory (CORE_ADDR memaddr
, char *myaddr
,
75 int len
, int should_write
,
76 struct mem_attrib
*attrib
,
77 struct target_ops
*target
);
79 static void remote_prepare_to_store (void);
81 static void remote_fetch_registers (int regno
);
83 static void remote_resume (ptid_t ptid
, int step
,
84 enum target_signal siggnal
);
85 static void remote_async_resume (ptid_t ptid
, int step
,
86 enum target_signal siggnal
);
87 static int remote_start_remote (struct ui_out
*uiout
, void *dummy
);
89 static void remote_open (char *name
, int from_tty
);
90 static void remote_async_open (char *name
, int from_tty
);
92 static void extended_remote_open (char *name
, int from_tty
);
93 static void extended_remote_async_open (char *name
, int from_tty
);
95 static void remote_open_1 (char *, int, struct target_ops
*, int extended_p
,
98 static void remote_close (int quitting
);
100 static void remote_store_registers (int regno
);
102 static void remote_mourn (void);
103 static void remote_async_mourn (void);
105 static void extended_remote_restart (void);
107 static void extended_remote_mourn (void);
109 static void extended_remote_create_inferior (char *, char *, char **);
110 static void extended_remote_async_create_inferior (char *, char *, char **);
112 static void remote_mourn_1 (struct target_ops
*);
114 static void remote_send (char *buf
, long sizeof_buf
);
116 static int readchar (int timeout
);
118 static ptid_t
remote_wait (ptid_t ptid
,
119 struct target_waitstatus
*status
);
120 static ptid_t
remote_async_wait (ptid_t ptid
,
121 struct target_waitstatus
*status
);
123 static void remote_kill (void);
124 static void remote_async_kill (void);
126 static int tohex (int nib
);
128 static void remote_detach (char *args
, int from_tty
);
130 static void remote_interrupt (int signo
);
132 static void remote_interrupt_twice (int signo
);
134 static void interrupt_query (void);
136 static void set_thread (int, int);
138 static int remote_thread_alive (ptid_t
);
140 static void get_offsets (void);
142 static long read_frame (char *buf
, long sizeof_buf
);
144 static int remote_insert_breakpoint (CORE_ADDR
, char *);
146 static int remote_remove_breakpoint (CORE_ADDR
, char *);
148 static int hexnumlen (ULONGEST num
);
150 static void init_remote_ops (void);
152 static void init_extended_remote_ops (void);
154 static void init_remote_cisco_ops (void);
156 static struct target_ops remote_cisco_ops
;
158 static void remote_stop (void);
160 static int ishex (int ch
, int *val
);
162 static int stubhex (int ch
);
164 static int remote_query (int /*char */ , char *, char *, int *);
166 static int hexnumstr (char *, ULONGEST
);
168 static int hexnumnstr (char *, ULONGEST
, int);
170 static CORE_ADDR
remote_address_masked (CORE_ADDR
);
172 static void print_packet (char *);
174 static unsigned long crc32 (unsigned char *, int, unsigned int);
176 static void compare_sections_command (char *, int);
178 static void packet_command (char *, int);
180 static int stub_unpack_int (char *buff
, int fieldlength
);
182 static ptid_t
remote_current_thread (ptid_t oldptid
);
184 static void remote_find_new_threads (void);
186 static void record_currthread (int currthread
);
188 static int fromhex (int a
);
190 static int hex2bin (const char *hex
, char *bin
, int count
);
192 static int bin2hex (const char *bin
, char *hex
, int count
);
194 static int putpkt_binary (char *buf
, int cnt
);
196 static void check_binary_download (CORE_ADDR addr
);
198 struct packet_config
;
200 static void show_packet_config_cmd (struct packet_config
*config
);
202 static void update_packet_config (struct packet_config
*config
);
204 void _initialize_remote (void);
206 /* Description of the remote protocol. Strictly speaking, when the
207 target is open()ed, remote.c should create a per-target description
208 of the remote protocol using that target's architecture.
209 Unfortunatly, the target stack doesn't include local state. For
210 the moment keep the information in the target's architecture
215 long offset
; /* Offset into G packet. */
216 long regnum
; /* GDB's internal register number. */
217 LONGEST pnum
; /* Remote protocol register number. */
218 int in_g_packet
; /* Always part of G packet. */
219 /* long size in bytes; == REGISTER_RAW_SIZE (regnum); at present. */
220 /* char *name; == REGISTER_NAME (regnum); at present. */
225 /* Description of the remote protocol registers. */
226 long sizeof_g_packet
;
228 /* Description of the remote protocol registers indexed by REGNUM
229 (making an array of NUM_REGS + NUM_PSEUDO_REGS in size). */
230 struct packet_reg
*regs
;
232 /* This is the size (in chars) of the first response to the ``g''
233 packet. It is used as a heuristic when determining the maximum
234 size of memory-read and memory-write packets. A target will
235 typically only reserve a buffer large enough to hold the ``g''
236 packet. The size does not include packet overhead (headers and
238 long actual_register_packet_size
;
240 /* This is the maximum size (in chars) of a non read/write packet.
241 It is also used as a cap on the size of read/write packets. */
242 long remote_packet_size
;
246 /* Handle for retreving the remote protocol data from gdbarch. */
247 static struct gdbarch_data
*remote_gdbarch_data_handle
;
249 static struct remote_state
*
250 get_remote_state (void)
252 return gdbarch_data (current_gdbarch
, remote_gdbarch_data_handle
);
256 init_remote_state (struct gdbarch
*gdbarch
)
259 struct remote_state
*rs
= xmalloc (sizeof (struct remote_state
));
261 if (DEPRECATED_REGISTER_BYTES
!= 0)
262 rs
->sizeof_g_packet
= DEPRECATED_REGISTER_BYTES
;
264 rs
->sizeof_g_packet
= 0;
266 /* Assume a 1:1 regnum<->pnum table. */
267 rs
->regs
= xcalloc (NUM_REGS
+ NUM_PSEUDO_REGS
, sizeof (struct packet_reg
));
268 for (regnum
= 0; regnum
< NUM_REGS
+ NUM_PSEUDO_REGS
; regnum
++)
270 struct packet_reg
*r
= &rs
->regs
[regnum
];
273 r
->offset
= REGISTER_BYTE (regnum
);
274 r
->in_g_packet
= (regnum
< NUM_REGS
);
275 /* ...name = REGISTER_NAME (regnum); */
277 /* Compute packet size by accumulating the size of all registers. */
278 if (DEPRECATED_REGISTER_BYTES
== 0)
279 rs
->sizeof_g_packet
+= register_size (current_gdbarch
, regnum
);
282 /* Default maximum number of characters in a packet body. Many
283 remote stubs have a hardwired buffer size of 400 bytes
284 (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used
285 as the maximum packet-size to ensure that the packet and an extra
286 NUL character can always fit in the buffer. This stops GDB
287 trashing stubs that try to squeeze an extra NUL into what is
288 already a full buffer (As of 1999-12-04 that was most stubs. */
289 rs
->remote_packet_size
= 400 - 1;
291 /* Should rs->sizeof_g_packet needs more space than the
292 default, adjust the size accordingly. Remember that each byte is
293 encoded as two characters. 32 is the overhead for the packet
294 header / footer. NOTE: cagney/1999-10-26: I suspect that 8
295 (``$NN:G...#NN'') is a better guess, the below has been padded a
297 if (rs
->sizeof_g_packet
> ((rs
->remote_packet_size
- 32) / 2))
298 rs
->remote_packet_size
= (rs
->sizeof_g_packet
* 2 + 32);
300 /* This one is filled in when a ``g'' packet is received. */
301 rs
->actual_register_packet_size
= 0;
307 free_remote_state (struct gdbarch
*gdbarch
, void *pointer
)
309 struct remote_state
*data
= pointer
;
314 static struct packet_reg
*
315 packet_reg_from_regnum (struct remote_state
*rs
, long regnum
)
317 if (regnum
< 0 && regnum
>= NUM_REGS
+ NUM_PSEUDO_REGS
)
321 struct packet_reg
*r
= &rs
->regs
[regnum
];
322 gdb_assert (r
->regnum
== regnum
);
327 static struct packet_reg
*
328 packet_reg_from_pnum (struct remote_state
*rs
, LONGEST pnum
)
331 for (i
= 0; i
< NUM_REGS
+ NUM_PSEUDO_REGS
; i
++)
333 struct packet_reg
*r
= &rs
->regs
[i
];
340 /* FIXME: graces/2002-08-08: These variables should eventually be
341 bound to an instance of the target object (as in gdbarch-tdep()),
342 when such a thing exists. */
344 /* This is set to the data address of the access causing the target
345 to stop for a watchpoint. */
346 static CORE_ADDR remote_watch_data_address
;
348 /* This is non-zero if taregt stopped for a watchpoint. */
349 static int remote_stopped_by_watchpoint_p
;
352 static struct target_ops remote_ops
;
354 static struct target_ops extended_remote_ops
;
356 /* Temporary target ops. Just like the remote_ops and
357 extended_remote_ops, but with asynchronous support. */
358 static struct target_ops remote_async_ops
;
360 static struct target_ops extended_async_remote_ops
;
362 /* FIXME: cagney/1999-09-23: Even though getpkt was called with
363 ``forever'' still use the normal timeout mechanism. This is
364 currently used by the ASYNC code to guarentee that target reads
365 during the initial connect always time-out. Once getpkt has been
366 modified to return a timeout indication and, in turn
367 remote_wait()/wait_for_inferior() have gained a timeout parameter
369 static int wait_forever_enabled_p
= 1;
372 /* This variable chooses whether to send a ^C or a break when the user
373 requests program interruption. Although ^C is usually what remote
374 systems expect, and that is the default here, sometimes a break is
375 preferable instead. */
377 static int remote_break
;
379 /* Descriptor for I/O to remote machine. Initialize it to NULL so that
380 remote_open knows that we don't have a file open when the program
382 static struct serial
*remote_desc
= NULL
;
384 /* This is set by the target (thru the 'S' message)
385 to denote that the target is in kernel mode. */
386 static int cisco_kernel_mode
= 0;
388 /* This variable sets the number of bits in an address that are to be
389 sent in a memory ("M" or "m") packet. Normally, after stripping
390 leading zeros, the entire address would be sent. This variable
391 restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The
392 initial implementation of remote.c restricted the address sent in
393 memory packets to ``host::sizeof long'' bytes - (typically 32
394 bits). Consequently, for 64 bit targets, the upper 32 bits of an
395 address was never sent. Since fixing this bug may cause a break in
396 some remote targets this variable is principly provided to
397 facilitate backward compatibility. */
399 static int remote_address_size
;
401 /* Tempoary to track who currently owns the terminal. See
402 target_async_terminal_* for more details. */
404 static int remote_async_terminal_ours_p
;
407 /* User configurable variables for the number of characters in a
408 memory read/write packet. MIN ((rs->remote_packet_size),
409 rs->sizeof_g_packet) is the default. Some targets need smaller
410 values (fifo overruns, et.al.) and some users need larger values
411 (speed up transfers). The variables ``preferred_*'' (the user
412 request), ``current_*'' (what was actually set) and ``forced_*''
413 (Positive - a soft limit, negative - a hard limit). */
415 struct memory_packet_config
422 /* Compute the current size of a read/write packet. Since this makes
423 use of ``actual_register_packet_size'' the computation is dynamic. */
426 get_memory_packet_size (struct memory_packet_config
*config
)
428 struct remote_state
*rs
= get_remote_state ();
429 /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk
430 law?) that some hosts don't cope very well with large alloca()
431 calls. Eventually the alloca() code will be replaced by calls to
432 xmalloc() and make_cleanups() allowing this restriction to either
433 be lifted or removed. */
434 #ifndef MAX_REMOTE_PACKET_SIZE
435 #define MAX_REMOTE_PACKET_SIZE 16384
437 /* NOTE: 16 is just chosen at random. */
438 #ifndef MIN_REMOTE_PACKET_SIZE
439 #define MIN_REMOTE_PACKET_SIZE 16
444 if (config
->size
<= 0)
445 what_they_get
= MAX_REMOTE_PACKET_SIZE
;
447 what_they_get
= config
->size
;
451 what_they_get
= (rs
->remote_packet_size
);
452 /* Limit the packet to the size specified by the user. */
454 && what_they_get
> config
->size
)
455 what_they_get
= config
->size
;
456 /* Limit it to the size of the targets ``g'' response. */
457 if ((rs
->actual_register_packet_size
) > 0
458 && what_they_get
> (rs
->actual_register_packet_size
))
459 what_they_get
= (rs
->actual_register_packet_size
);
461 if (what_they_get
> MAX_REMOTE_PACKET_SIZE
)
462 what_they_get
= MAX_REMOTE_PACKET_SIZE
;
463 if (what_they_get
< MIN_REMOTE_PACKET_SIZE
)
464 what_they_get
= MIN_REMOTE_PACKET_SIZE
;
465 return what_they_get
;
468 /* Update the size of a read/write packet. If they user wants
469 something really big then do a sanity check. */
472 set_memory_packet_size (char *args
, struct memory_packet_config
*config
)
474 int fixed_p
= config
->fixed_p
;
475 long size
= config
->size
;
477 error ("Argument required (integer, `fixed' or `limited').");
478 else if (strcmp (args
, "hard") == 0
479 || strcmp (args
, "fixed") == 0)
481 else if (strcmp (args
, "soft") == 0
482 || strcmp (args
, "limit") == 0)
487 size
= strtoul (args
, &end
, 0);
489 error ("Invalid %s (bad syntax).", config
->name
);
491 /* Instead of explicitly capping the size of a packet to
492 MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is
493 instead allowed to set the size to something arbitrarily
495 if (size
> MAX_REMOTE_PACKET_SIZE
)
496 error ("Invalid %s (too large).", config
->name
);
500 if (fixed_p
&& !config
->fixed_p
)
502 if (! query ("The target may not be able to correctly handle a %s\n"
503 "of %ld bytes. Change the packet size? ",
505 error ("Packet size not changed.");
507 /* Update the config. */
508 config
->fixed_p
= fixed_p
;
513 show_memory_packet_size (struct memory_packet_config
*config
)
515 printf_filtered ("The %s is %ld. ", config
->name
, config
->size
);
517 printf_filtered ("Packets are fixed at %ld bytes.\n",
518 get_memory_packet_size (config
));
520 printf_filtered ("Packets are limited to %ld bytes.\n",
521 get_memory_packet_size (config
));
524 static struct memory_packet_config memory_write_packet_config
=
526 "memory-write-packet-size",
530 set_memory_write_packet_size (char *args
, int from_tty
)
532 set_memory_packet_size (args
, &memory_write_packet_config
);
536 show_memory_write_packet_size (char *args
, int from_tty
)
538 show_memory_packet_size (&memory_write_packet_config
);
542 get_memory_write_packet_size (void)
544 return get_memory_packet_size (&memory_write_packet_config
);
547 static struct memory_packet_config memory_read_packet_config
=
549 "memory-read-packet-size",
553 set_memory_read_packet_size (char *args
, int from_tty
)
555 set_memory_packet_size (args
, &memory_read_packet_config
);
559 show_memory_read_packet_size (char *args
, int from_tty
)
561 show_memory_packet_size (&memory_read_packet_config
);
565 get_memory_read_packet_size (void)
567 struct remote_state
*rs
= get_remote_state ();
568 long size
= get_memory_packet_size (&memory_read_packet_config
);
569 /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an
570 extra buffer size argument before the memory read size can be
571 increased beyond (rs->remote_packet_size). */
572 if (size
> (rs
->remote_packet_size
))
573 size
= (rs
->remote_packet_size
);
578 /* Generic configuration support for packets the stub optionally
579 supports. Allows the user to specify the use of the packet as well
580 as allowing GDB to auto-detect support in the remote stub. */
584 PACKET_SUPPORT_UNKNOWN
= 0,
593 enum auto_boolean detect
;
594 enum packet_support support
;
597 /* Analyze a packet's return value and update the packet config
608 update_packet_config (struct packet_config
*config
)
610 switch (config
->detect
)
612 case AUTO_BOOLEAN_TRUE
:
613 config
->support
= PACKET_ENABLE
;
615 case AUTO_BOOLEAN_FALSE
:
616 config
->support
= PACKET_DISABLE
;
618 case AUTO_BOOLEAN_AUTO
:
619 config
->support
= PACKET_SUPPORT_UNKNOWN
;
625 show_packet_config_cmd (struct packet_config
*config
)
627 char *support
= "internal-error";
628 switch (config
->support
)
634 support
= "disabled";
636 case PACKET_SUPPORT_UNKNOWN
:
640 switch (config
->detect
)
642 case AUTO_BOOLEAN_AUTO
:
643 printf_filtered ("Support for remote protocol `%s' (%s) packet is auto-detected, currently %s.\n",
644 config
->name
, config
->title
, support
);
646 case AUTO_BOOLEAN_TRUE
:
647 case AUTO_BOOLEAN_FALSE
:
648 printf_filtered ("Support for remote protocol `%s' (%s) packet is currently %s.\n",
649 config
->name
, config
->title
, support
);
655 add_packet_config_cmd (struct packet_config
*config
,
658 cmd_sfunc_ftype
*set_func
,
659 cmd_sfunc_ftype
*show_func
,
660 struct cmd_list_element
**set_remote_list
,
661 struct cmd_list_element
**show_remote_list
,
664 struct cmd_list_element
*set_cmd
;
665 struct cmd_list_element
*show_cmd
;
670 config
->title
= title
;
671 config
->detect
= AUTO_BOOLEAN_AUTO
;
672 config
->support
= PACKET_SUPPORT_UNKNOWN
;
673 xasprintf (&set_doc
, "Set use of remote protocol `%s' (%s) packet",
675 xasprintf (&show_doc
, "Show current use of remote protocol `%s' (%s) packet",
677 /* set/show TITLE-packet {auto,on,off} */
678 xasprintf (&cmd_name
, "%s-packet", title
);
679 add_setshow_auto_boolean_cmd (cmd_name
, class_obscure
,
680 &config
->detect
, set_doc
, show_doc
,
682 set_remote_list
, show_remote_list
);
683 /* set/show remote NAME-packet {auto,on,off} -- legacy */
687 xasprintf (&legacy_name
, "%s-packet", name
);
688 add_alias_cmd (legacy_name
, cmd_name
, class_obscure
, 0,
690 add_alias_cmd (legacy_name
, cmd_name
, class_obscure
, 0,
695 static enum packet_result
696 packet_ok (const char *buf
, struct packet_config
*config
)
700 /* The stub recognized the packet request. Check that the
701 operation succeeded. */
702 switch (config
->support
)
704 case PACKET_SUPPORT_UNKNOWN
:
706 fprintf_unfiltered (gdb_stdlog
,
707 "Packet %s (%s) is supported\n",
708 config
->name
, config
->title
);
709 config
->support
= PACKET_ENABLE
;
712 internal_error (__FILE__
, __LINE__
,
713 "packet_ok: attempt to use a disabled packet");
718 if (buf
[0] == 'O' && buf
[1] == 'K' && buf
[2] == '\0')
719 /* "OK" - definitly OK. */
722 && isxdigit (buf
[1]) && isxdigit (buf
[2])
724 /* "Enn" - definitly an error. */
726 /* The packet may or may not be OK. Just assume it is */
731 /* The stub does not support the packet. */
732 switch (config
->support
)
735 if (config
->detect
== AUTO_BOOLEAN_AUTO
)
736 /* If the stub previously indicated that the packet was
737 supported then there is a protocol error.. */
738 error ("Protocol error: %s (%s) conflicting enabled responses.",
739 config
->name
, config
->title
);
741 /* The user set it wrong. */
742 error ("Enabled packet %s (%s) not recognized by stub",
743 config
->name
, config
->title
);
745 case PACKET_SUPPORT_UNKNOWN
:
747 fprintf_unfiltered (gdb_stdlog
,
748 "Packet %s (%s) is NOT supported\n",
749 config
->name
, config
->title
);
750 config
->support
= PACKET_DISABLE
;
755 return PACKET_UNKNOWN
;
759 /* Should we try the 'qSymbol' (target symbol lookup service) request? */
760 static struct packet_config remote_protocol_qSymbol
;
763 set_remote_protocol_qSymbol_packet_cmd (char *args
, int from_tty
,
764 struct cmd_list_element
*c
)
766 update_packet_config (&remote_protocol_qSymbol
);
770 show_remote_protocol_qSymbol_packet_cmd (char *args
, int from_tty
,
771 struct cmd_list_element
*c
)
773 show_packet_config_cmd (&remote_protocol_qSymbol
);
776 /* Should we try the 'e' (step over range) request? */
777 static struct packet_config remote_protocol_e
;
780 set_remote_protocol_e_packet_cmd (char *args
, int from_tty
,
781 struct cmd_list_element
*c
)
783 update_packet_config (&remote_protocol_e
);
787 show_remote_protocol_e_packet_cmd (char *args
, int from_tty
,
788 struct cmd_list_element
*c
)
790 show_packet_config_cmd (&remote_protocol_e
);
794 /* Should we try the 'E' (step over range / w signal #) request? */
795 static struct packet_config remote_protocol_E
;
798 set_remote_protocol_E_packet_cmd (char *args
, int from_tty
,
799 struct cmd_list_element
*c
)
801 update_packet_config (&remote_protocol_E
);
805 show_remote_protocol_E_packet_cmd (char *args
, int from_tty
,
806 struct cmd_list_element
*c
)
808 show_packet_config_cmd (&remote_protocol_E
);
812 /* Should we try the 'P' (set register) request? */
814 static struct packet_config remote_protocol_P
;
817 set_remote_protocol_P_packet_cmd (char *args
, int from_tty
,
818 struct cmd_list_element
*c
)
820 update_packet_config (&remote_protocol_P
);
824 show_remote_protocol_P_packet_cmd (char *args
, int from_tty
,
825 struct cmd_list_element
*c
)
827 show_packet_config_cmd (&remote_protocol_P
);
830 /* Should we try one of the 'Z' requests? */
834 Z_PACKET_SOFTWARE_BP
,
835 Z_PACKET_HARDWARE_BP
,
842 static struct packet_config remote_protocol_Z
[NR_Z_PACKET_TYPES
];
844 /* FIXME: Instead of having all these boiler plate functions, the
845 command callback should include a context argument. */
848 set_remote_protocol_Z_software_bp_packet_cmd (char *args
, int from_tty
,
849 struct cmd_list_element
*c
)
851 update_packet_config (&remote_protocol_Z
[Z_PACKET_SOFTWARE_BP
]);
855 show_remote_protocol_Z_software_bp_packet_cmd (char *args
, int from_tty
,
856 struct cmd_list_element
*c
)
858 show_packet_config_cmd (&remote_protocol_Z
[Z_PACKET_SOFTWARE_BP
]);
862 set_remote_protocol_Z_hardware_bp_packet_cmd (char *args
, int from_tty
,
863 struct cmd_list_element
*c
)
865 update_packet_config (&remote_protocol_Z
[Z_PACKET_HARDWARE_BP
]);
869 show_remote_protocol_Z_hardware_bp_packet_cmd (char *args
, int from_tty
,
870 struct cmd_list_element
*c
)
872 show_packet_config_cmd (&remote_protocol_Z
[Z_PACKET_HARDWARE_BP
]);
876 set_remote_protocol_Z_write_wp_packet_cmd (char *args
, int from_tty
,
877 struct cmd_list_element
*c
)
879 update_packet_config (&remote_protocol_Z
[Z_PACKET_WRITE_WP
]);
883 show_remote_protocol_Z_write_wp_packet_cmd (char *args
, int from_tty
,
884 struct cmd_list_element
*c
)
886 show_packet_config_cmd (&remote_protocol_Z
[Z_PACKET_WRITE_WP
]);
890 set_remote_protocol_Z_read_wp_packet_cmd (char *args
, int from_tty
,
891 struct cmd_list_element
*c
)
893 update_packet_config (&remote_protocol_Z
[Z_PACKET_READ_WP
]);
897 show_remote_protocol_Z_read_wp_packet_cmd (char *args
, int from_tty
,
898 struct cmd_list_element
*c
)
900 show_packet_config_cmd (&remote_protocol_Z
[Z_PACKET_READ_WP
]);
904 set_remote_protocol_Z_access_wp_packet_cmd (char *args
, int from_tty
,
905 struct cmd_list_element
*c
)
907 update_packet_config (&remote_protocol_Z
[Z_PACKET_ACCESS_WP
]);
911 show_remote_protocol_Z_access_wp_packet_cmd (char *args
, int from_tty
,
912 struct cmd_list_element
*c
)
914 show_packet_config_cmd (&remote_protocol_Z
[Z_PACKET_ACCESS_WP
]);
917 /* For compatibility with older distributions. Provide a ``set remote
918 Z-packet ...'' command that updates all the Z packet types. */
920 static enum auto_boolean remote_Z_packet_detect
;
923 set_remote_protocol_Z_packet_cmd (char *args
, int from_tty
,
924 struct cmd_list_element
*c
)
927 for (i
= 0; i
< NR_Z_PACKET_TYPES
; i
++)
929 remote_protocol_Z
[i
].detect
= remote_Z_packet_detect
;
930 update_packet_config (&remote_protocol_Z
[i
]);
935 show_remote_protocol_Z_packet_cmd (char *args
, int from_tty
,
936 struct cmd_list_element
*c
)
939 for (i
= 0; i
< NR_Z_PACKET_TYPES
; i
++)
941 show_packet_config_cmd (&remote_protocol_Z
[i
]);
945 /* Should we try the 'X' (remote binary download) packet?
947 This variable (available to the user via "set remote X-packet")
948 dictates whether downloads are sent in binary (via the 'X' packet).
949 We assume that the stub can, and attempt to do it. This will be
950 cleared if the stub does not understand it. This switch is still
951 needed, though in cases when the packet is supported in the stub,
952 but the connection does not allow it (i.e., 7-bit serial connection
955 static struct packet_config remote_protocol_binary_download
;
957 /* Should we try the 'ThreadInfo' query packet?
959 This variable (NOT available to the user: auto-detect only!)
960 determines whether GDB will use the new, simpler "ThreadInfo"
961 query or the older, more complex syntax for thread queries.
962 This is an auto-detect variable (set to true at each connect,
963 and set to false when the target fails to recognize it). */
965 static int use_threadinfo_query
;
966 static int use_threadextra_query
;
969 set_remote_protocol_binary_download_cmd (char *args
,
971 struct cmd_list_element
*c
)
973 update_packet_config (&remote_protocol_binary_download
);
977 show_remote_protocol_binary_download_cmd (char *args
, int from_tty
,
978 struct cmd_list_element
*c
)
980 show_packet_config_cmd (&remote_protocol_binary_download
);
984 /* Tokens for use by the asynchronous signal handlers for SIGINT */
985 static void *sigint_remote_twice_token
;
986 static void *sigint_remote_token
;
988 /* These are pointers to hook functions that may be set in order to
989 modify resume/wait behavior for a particular architecture. */
991 void (*target_resume_hook
) (void);
992 void (*target_wait_loop_hook
) (void);
996 /* These are the threads which we last sent to the remote system.
997 -1 for all or -2 for not sent yet. */
998 static int general_thread
;
999 static int continue_thread
;
1001 /* Call this function as a result of
1002 1) A halt indication (T packet) containing a thread id
1003 2) A direct query of currthread
1004 3) Successful execution of set thread
1008 record_currthread (int currthread
)
1010 general_thread
= currthread
;
1012 /* If this is a new thread, add it to GDB's thread list.
1013 If we leave it up to WFI to do this, bad things will happen. */
1014 if (!in_thread_list (pid_to_ptid (currthread
)))
1016 add_thread (pid_to_ptid (currthread
));
1017 ui_out_text (uiout
, "[New ");
1018 ui_out_text (uiout
, target_pid_to_str (pid_to_ptid (currthread
)));
1019 ui_out_text (uiout
, "]\n");
1023 #define MAGIC_NULL_PID 42000
1026 set_thread (int th
, int gen
)
1028 struct remote_state
*rs
= get_remote_state ();
1029 char *buf
= alloca (rs
->remote_packet_size
);
1030 int state
= gen
? general_thread
: continue_thread
;
1036 buf
[1] = gen
? 'g' : 'c';
1037 if (th
== MAGIC_NULL_PID
)
1043 sprintf (&buf
[2], "-%x", -th
);
1045 sprintf (&buf
[2], "%x", th
);
1047 getpkt (buf
, (rs
->remote_packet_size
), 0);
1049 general_thread
= th
;
1051 continue_thread
= th
;
1054 /* Return nonzero if the thread TH is still alive on the remote system. */
1057 remote_thread_alive (ptid_t ptid
)
1059 int tid
= PIDGET (ptid
);
1063 sprintf (buf
, "T-%08x", -tid
);
1065 sprintf (buf
, "T%08x", tid
);
1067 getpkt (buf
, sizeof (buf
), 0);
1068 return (buf
[0] == 'O' && buf
[1] == 'K');
1071 /* About these extended threadlist and threadinfo packets. They are
1072 variable length packets but, the fields within them are often fixed
1073 length. They are redundent enough to send over UDP as is the
1074 remote protocol in general. There is a matching unit test module
1077 #define OPAQUETHREADBYTES 8
1079 /* a 64 bit opaque identifier */
1080 typedef unsigned char threadref
[OPAQUETHREADBYTES
];
1082 /* WARNING: This threadref data structure comes from the remote O.S., libstub
1083 protocol encoding, and remote.c. it is not particularly changable */
1085 /* Right now, the internal structure is int. We want it to be bigger.
1089 typedef int gdb_threadref
; /* internal GDB thread reference */
1091 /* gdb_ext_thread_info is an internal GDB data structure which is
1092 equivalint to the reply of the remote threadinfo packet */
1094 struct gdb_ext_thread_info
1096 threadref threadid
; /* External form of thread reference */
1097 int active
; /* Has state interesting to GDB? , regs, stack */
1098 char display
[256]; /* Brief state display, name, blocked/syspended */
1099 char shortname
[32]; /* To be used to name threads */
1100 char more_display
[256]; /* Long info, statistics, queue depth, whatever */
1103 /* The volume of remote transfers can be limited by submitting
1104 a mask containing bits specifying the desired information.
1105 Use a union of these values as the 'selection' parameter to
1106 get_thread_info. FIXME: Make these TAG names more thread specific.
1109 #define TAG_THREADID 1
1110 #define TAG_EXISTS 2
1111 #define TAG_DISPLAY 4
1112 #define TAG_THREADNAME 8
1113 #define TAG_MOREDISPLAY 16
1115 #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES*2)
1117 char *unpack_varlen_hex (char *buff
, ULONGEST
*result
);
1119 static char *unpack_nibble (char *buf
, int *val
);
1121 static char *pack_nibble (char *buf
, int nibble
);
1123 static char *pack_hex_byte (char *pkt
, int /*unsigned char */ byte
);
1125 static char *unpack_byte (char *buf
, int *value
);
1127 static char *pack_int (char *buf
, int value
);
1129 static char *unpack_int (char *buf
, int *value
);
1131 static char *unpack_string (char *src
, char *dest
, int length
);
1133 static char *pack_threadid (char *pkt
, threadref
* id
);
1135 static char *unpack_threadid (char *inbuf
, threadref
* id
);
1137 void int_to_threadref (threadref
* id
, int value
);
1139 static int threadref_to_int (threadref
* ref
);
1141 static void copy_threadref (threadref
* dest
, threadref
* src
);
1143 static int threadmatch (threadref
* dest
, threadref
* src
);
1145 static char *pack_threadinfo_request (char *pkt
, int mode
, threadref
* id
);
1147 static int remote_unpack_thread_info_response (char *pkt
,
1148 threadref
* expectedref
,
1149 struct gdb_ext_thread_info
1153 static int remote_get_threadinfo (threadref
* threadid
, int fieldset
, /*TAG mask */
1154 struct gdb_ext_thread_info
*info
);
1156 static int adapt_remote_get_threadinfo (gdb_threadref
* ref
,
1158 struct gdb_ext_thread_info
*info
);
1160 static char *pack_threadlist_request (char *pkt
, int startflag
,
1162 threadref
* nextthread
);
1164 static int parse_threadlist_response (char *pkt
,
1166 threadref
* original_echo
,
1167 threadref
* resultlist
, int *doneflag
);
1169 static int remote_get_threadlist (int startflag
,
1170 threadref
* nextthread
,
1173 int *result_count
, threadref
* threadlist
);
1175 typedef int (*rmt_thread_action
) (threadref
* ref
, void *context
);
1177 static int remote_threadlist_iterator (rmt_thread_action stepfunction
,
1178 void *context
, int looplimit
);
1180 static int remote_newthread_step (threadref
* ref
, void *context
);
1182 /* encode 64 bits in 16 chars of hex */
1184 static const char hexchars
[] = "0123456789abcdef";
1187 ishex (int ch
, int *val
)
1189 if ((ch
>= 'a') && (ch
<= 'f'))
1191 *val
= ch
- 'a' + 10;
1194 if ((ch
>= 'A') && (ch
<= 'F'))
1196 *val
= ch
- 'A' + 10;
1199 if ((ch
>= '0') && (ch
<= '9'))
1210 if (ch
>= 'a' && ch
<= 'f')
1211 return ch
- 'a' + 10;
1212 if (ch
>= '0' && ch
<= '9')
1214 if (ch
>= 'A' && ch
<= 'F')
1215 return ch
- 'A' + 10;
1220 stub_unpack_int (char *buff
, int fieldlength
)
1227 nibble
= stubhex (*buff
++);
1231 retval
= retval
<< 4;
1237 unpack_varlen_hex (char *buff
, /* packet to parse */
1243 while (ishex (*buff
, &nibble
))
1246 retval
= retval
<< 4;
1247 retval
|= nibble
& 0x0f;
1254 unpack_nibble (char *buf
, int *val
)
1256 ishex (*buf
++, val
);
1261 pack_nibble (char *buf
, int nibble
)
1263 *buf
++ = hexchars
[(nibble
& 0x0f)];
1268 pack_hex_byte (char *pkt
, int byte
)
1270 *pkt
++ = hexchars
[(byte
>> 4) & 0xf];
1271 *pkt
++ = hexchars
[(byte
& 0xf)];
1276 unpack_byte (char *buf
, int *value
)
1278 *value
= stub_unpack_int (buf
, 2);
1283 pack_int (char *buf
, int value
)
1285 buf
= pack_hex_byte (buf
, (value
>> 24) & 0xff);
1286 buf
= pack_hex_byte (buf
, (value
>> 16) & 0xff);
1287 buf
= pack_hex_byte (buf
, (value
>> 8) & 0x0ff);
1288 buf
= pack_hex_byte (buf
, (value
& 0xff));
1293 unpack_int (char *buf
, int *value
)
1295 *value
= stub_unpack_int (buf
, 8);
1299 #if 0 /* currently unused, uncomment when needed */
1300 static char *pack_string (char *pkt
, char *string
);
1303 pack_string (char *pkt
, char *string
)
1308 len
= strlen (string
);
1310 len
= 200; /* Bigger than most GDB packets, junk??? */
1311 pkt
= pack_hex_byte (pkt
, len
);
1315 if ((ch
== '\0') || (ch
== '#'))
1316 ch
= '*'; /* Protect encapsulation */
1321 #endif /* 0 (unused) */
1324 unpack_string (char *src
, char *dest
, int length
)
1333 pack_threadid (char *pkt
, threadref
*id
)
1336 unsigned char *altid
;
1338 altid
= (unsigned char *) id
;
1339 limit
= pkt
+ BUF_THREAD_ID_SIZE
;
1341 pkt
= pack_hex_byte (pkt
, *altid
++);
1347 unpack_threadid (char *inbuf
, threadref
*id
)
1350 char *limit
= inbuf
+ BUF_THREAD_ID_SIZE
;
1353 altref
= (char *) id
;
1355 while (inbuf
< limit
)
1357 x
= stubhex (*inbuf
++);
1358 y
= stubhex (*inbuf
++);
1359 *altref
++ = (x
<< 4) | y
;
1364 /* Externally, threadrefs are 64 bits but internally, they are still
1365 ints. This is due to a mismatch of specifications. We would like
1366 to use 64bit thread references internally. This is an adapter
1370 int_to_threadref (threadref
*id
, int value
)
1372 unsigned char *scan
;
1374 scan
= (unsigned char *) id
;
1380 *scan
++ = (value
>> 24) & 0xff;
1381 *scan
++ = (value
>> 16) & 0xff;
1382 *scan
++ = (value
>> 8) & 0xff;
1383 *scan
++ = (value
& 0xff);
1387 threadref_to_int (threadref
*ref
)
1390 unsigned char *scan
;
1392 scan
= (char *) ref
;
1396 value
= (value
<< 8) | ((*scan
++) & 0xff);
1401 copy_threadref (threadref
*dest
, threadref
*src
)
1404 unsigned char *csrc
, *cdest
;
1406 csrc
= (unsigned char *) src
;
1407 cdest
= (unsigned char *) dest
;
1414 threadmatch (threadref
*dest
, threadref
*src
)
1416 /* things are broken right now, so just assume we got a match */
1418 unsigned char *srcp
, *destp
;
1420 srcp
= (char *) src
;
1421 destp
= (char *) dest
;
1425 result
&= (*srcp
++ == *destp
++) ? 1 : 0;
1432 threadid:1, # always request threadid
1439 /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */
1442 pack_threadinfo_request (char *pkt
, int mode
, threadref
*id
)
1444 *pkt
++ = 'q'; /* Info Query */
1445 *pkt
++ = 'P'; /* process or thread info */
1446 pkt
= pack_int (pkt
, mode
); /* mode */
1447 pkt
= pack_threadid (pkt
, id
); /* threadid */
1448 *pkt
= '\0'; /* terminate */
1452 /* These values tag the fields in a thread info response packet */
1453 /* Tagging the fields allows us to request specific fields and to
1454 add more fields as time goes by */
1456 #define TAG_THREADID 1 /* Echo the thread identifier */
1457 #define TAG_EXISTS 2 /* Is this process defined enough to
1458 fetch registers and its stack */
1459 #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */
1460 #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is */
1461 #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about
1465 remote_unpack_thread_info_response (char *pkt
, threadref
*expectedref
,
1466 struct gdb_ext_thread_info
*info
)
1468 struct remote_state
*rs
= get_remote_state ();
1472 char *limit
= pkt
+ (rs
->remote_packet_size
); /* plausable parsing limit */
1475 /* info->threadid = 0; FIXME: implement zero_threadref */
1477 info
->display
[0] = '\0';
1478 info
->shortname
[0] = '\0';
1479 info
->more_display
[0] = '\0';
1481 /* Assume the characters indicating the packet type have been stripped */
1482 pkt
= unpack_int (pkt
, &mask
); /* arg mask */
1483 pkt
= unpack_threadid (pkt
, &ref
);
1486 warning ("Incomplete response to threadinfo request\n");
1487 if (!threadmatch (&ref
, expectedref
))
1488 { /* This is an answer to a different request */
1489 warning ("ERROR RMT Thread info mismatch\n");
1492 copy_threadref (&info
->threadid
, &ref
);
1494 /* Loop on tagged fields , try to bail if somthing goes wrong */
1496 while ((pkt
< limit
) && mask
&& *pkt
) /* packets are terminated with nulls */
1498 pkt
= unpack_int (pkt
, &tag
); /* tag */
1499 pkt
= unpack_byte (pkt
, &length
); /* length */
1500 if (!(tag
& mask
)) /* tags out of synch with mask */
1502 warning ("ERROR RMT: threadinfo tag mismatch\n");
1506 if (tag
== TAG_THREADID
)
1510 warning ("ERROR RMT: length of threadid is not 16\n");
1514 pkt
= unpack_threadid (pkt
, &ref
);
1515 mask
= mask
& ~TAG_THREADID
;
1518 if (tag
== TAG_EXISTS
)
1520 info
->active
= stub_unpack_int (pkt
, length
);
1522 mask
= mask
& ~(TAG_EXISTS
);
1525 warning ("ERROR RMT: 'exists' length too long\n");
1531 if (tag
== TAG_THREADNAME
)
1533 pkt
= unpack_string (pkt
, &info
->shortname
[0], length
);
1534 mask
= mask
& ~TAG_THREADNAME
;
1537 if (tag
== TAG_DISPLAY
)
1539 pkt
= unpack_string (pkt
, &info
->display
[0], length
);
1540 mask
= mask
& ~TAG_DISPLAY
;
1543 if (tag
== TAG_MOREDISPLAY
)
1545 pkt
= unpack_string (pkt
, &info
->more_display
[0], length
);
1546 mask
= mask
& ~TAG_MOREDISPLAY
;
1549 warning ("ERROR RMT: unknown thread info tag\n");
1550 break; /* Not a tag we know about */
1556 remote_get_threadinfo (threadref
*threadid
, int fieldset
, /* TAG mask */
1557 struct gdb_ext_thread_info
*info
)
1559 struct remote_state
*rs
= get_remote_state ();
1561 char *threadinfo_pkt
= alloca (rs
->remote_packet_size
);
1563 pack_threadinfo_request (threadinfo_pkt
, fieldset
, threadid
);
1564 putpkt (threadinfo_pkt
);
1565 getpkt (threadinfo_pkt
, (rs
->remote_packet_size
), 0);
1566 result
= remote_unpack_thread_info_response (threadinfo_pkt
+ 2, threadid
,
1571 /* Unfortunately, 61 bit thread-ids are bigger than the internal
1572 representation of a threadid. */
1575 adapt_remote_get_threadinfo (gdb_threadref
*ref
, int selection
,
1576 struct gdb_ext_thread_info
*info
)
1580 int_to_threadref (&lclref
, *ref
);
1581 return remote_get_threadinfo (&lclref
, selection
, info
);
1584 /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */
1587 pack_threadlist_request (char *pkt
, int startflag
, int threadcount
,
1588 threadref
*nextthread
)
1590 *pkt
++ = 'q'; /* info query packet */
1591 *pkt
++ = 'L'; /* Process LIST or threadLIST request */
1592 pkt
= pack_nibble (pkt
, startflag
); /* initflag 1 bytes */
1593 pkt
= pack_hex_byte (pkt
, threadcount
); /* threadcount 2 bytes */
1594 pkt
= pack_threadid (pkt
, nextthread
); /* 64 bit thread identifier */
1599 /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */
1602 parse_threadlist_response (char *pkt
, int result_limit
,
1603 threadref
*original_echo
, threadref
*resultlist
,
1606 struct remote_state
*rs
= get_remote_state ();
1608 int count
, resultcount
, done
;
1611 /* Assume the 'q' and 'M chars have been stripped. */
1612 limit
= pkt
+ ((rs
->remote_packet_size
) - BUF_THREAD_ID_SIZE
); /* done parse past here */
1613 pkt
= unpack_byte (pkt
, &count
); /* count field */
1614 pkt
= unpack_nibble (pkt
, &done
);
1615 /* The first threadid is the argument threadid. */
1616 pkt
= unpack_threadid (pkt
, original_echo
); /* should match query packet */
1617 while ((count
-- > 0) && (pkt
< limit
))
1619 pkt
= unpack_threadid (pkt
, resultlist
++);
1620 if (resultcount
++ >= result_limit
)
1629 remote_get_threadlist (int startflag
, threadref
*nextthread
, int result_limit
,
1630 int *done
, int *result_count
, threadref
*threadlist
)
1632 struct remote_state
*rs
= get_remote_state ();
1633 static threadref echo_nextthread
;
1634 char *threadlist_packet
= alloca (rs
->remote_packet_size
);
1635 char *t_response
= alloca (rs
->remote_packet_size
);
1638 /* Trancate result limit to be smaller than the packet size */
1639 if ((((result_limit
+ 1) * BUF_THREAD_ID_SIZE
) + 10) >= (rs
->remote_packet_size
))
1640 result_limit
= ((rs
->remote_packet_size
) / BUF_THREAD_ID_SIZE
) - 2;
1642 pack_threadlist_request (threadlist_packet
,
1643 startflag
, result_limit
, nextthread
);
1644 putpkt (threadlist_packet
);
1645 getpkt (t_response
, (rs
->remote_packet_size
), 0);
1648 parse_threadlist_response (t_response
+ 2, result_limit
, &echo_nextthread
,
1651 if (!threadmatch (&echo_nextthread
, nextthread
))
1653 /* FIXME: This is a good reason to drop the packet */
1654 /* Possably, there is a duplicate response */
1656 retransmit immediatly - race conditions
1657 retransmit after timeout - yes
1659 wait for packet, then exit
1661 warning ("HMM: threadlist did not echo arg thread, dropping it\n");
1662 return 0; /* I choose simply exiting */
1664 if (*result_count
<= 0)
1668 warning ("RMT ERROR : failed to get remote thread list\n");
1671 return result
; /* break; */
1673 if (*result_count
> result_limit
)
1676 warning ("RMT ERROR: threadlist response longer than requested\n");
1682 /* This is the interface between remote and threads, remotes upper interface */
1684 /* remote_find_new_threads retrieves the thread list and for each
1685 thread in the list, looks up the thread in GDB's internal list,
1686 ading the thread if it does not already exist. This involves
1687 getting partial thread lists from the remote target so, polling the
1688 quit_flag is required. */
1691 /* About this many threadisds fit in a packet. */
1693 #define MAXTHREADLISTRESULTS 32
1696 remote_threadlist_iterator (rmt_thread_action stepfunction
, void *context
,
1699 int done
, i
, result_count
;
1703 static threadref nextthread
;
1704 static threadref resultthreadlist
[MAXTHREADLISTRESULTS
];
1709 if (loopcount
++ > looplimit
)
1712 warning ("Remote fetch threadlist -infinite loop-\n");
1715 if (!remote_get_threadlist (startflag
, &nextthread
, MAXTHREADLISTRESULTS
,
1716 &done
, &result_count
, resultthreadlist
))
1721 /* clear for later iterations */
1723 /* Setup to resume next batch of thread references, set nextthread. */
1724 if (result_count
>= 1)
1725 copy_threadref (&nextthread
, &resultthreadlist
[result_count
- 1]);
1727 while (result_count
--)
1728 if (!(result
= (*stepfunction
) (&resultthreadlist
[i
++], context
)))
1735 remote_newthread_step (threadref
*ref
, void *context
)
1739 ptid
= pid_to_ptid (threadref_to_int (ref
));
1741 if (!in_thread_list (ptid
))
1743 return 1; /* continue iterator */
1746 #define CRAZY_MAX_THREADS 1000
1749 remote_current_thread (ptid_t oldpid
)
1751 struct remote_state
*rs
= get_remote_state ();
1752 char *buf
= alloca (rs
->remote_packet_size
);
1755 getpkt (buf
, (rs
->remote_packet_size
), 0);
1756 if (buf
[0] == 'Q' && buf
[1] == 'C')
1757 return pid_to_ptid (strtol (&buf
[2], NULL
, 16));
1762 /* Find new threads for info threads command.
1763 * Original version, using John Metzler's thread protocol.
1767 remote_find_new_threads (void)
1769 remote_threadlist_iterator (remote_newthread_step
, 0,
1771 if (PIDGET (inferior_ptid
) == MAGIC_NULL_PID
) /* ack ack ack */
1772 inferior_ptid
= remote_current_thread (inferior_ptid
);
1776 * Find all threads for info threads command.
1777 * Uses new thread protocol contributed by Cisco.
1778 * Falls back and attempts to use the older method (above)
1779 * if the target doesn't respond to the new method.
1783 remote_threads_info (void)
1785 struct remote_state
*rs
= get_remote_state ();
1786 char *buf
= alloca (rs
->remote_packet_size
);
1790 if (remote_desc
== 0) /* paranoia */
1791 error ("Command can only be used when connected to the remote target.");
1793 if (use_threadinfo_query
)
1795 putpkt ("qfThreadInfo");
1797 getpkt (bufp
, (rs
->remote_packet_size
), 0);
1798 if (bufp
[0] != '\0') /* q packet recognized */
1800 while (*bufp
++ == 'm') /* reply contains one or more TID */
1804 tid
= strtol (bufp
, &bufp
, 16);
1805 if (tid
!= 0 && !in_thread_list (pid_to_ptid (tid
)))
1806 add_thread (pid_to_ptid (tid
));
1808 while (*bufp
++ == ','); /* comma-separated list */
1809 putpkt ("qsThreadInfo");
1811 getpkt (bufp
, (rs
->remote_packet_size
), 0);
1817 /* Else fall back to old method based on jmetzler protocol. */
1818 use_threadinfo_query
= 0;
1819 remote_find_new_threads ();
1824 * Collect a descriptive string about the given thread.
1825 * The target may say anything it wants to about the thread
1826 * (typically info about its blocked / runnable state, name, etc.).
1827 * This string will appear in the info threads display.
1829 * Optional: targets are not required to implement this function.
1833 remote_threads_extra_info (struct thread_info
*tp
)
1835 struct remote_state
*rs
= get_remote_state ();
1839 struct gdb_ext_thread_info threadinfo
;
1840 static char display_buf
[100]; /* arbitrary... */
1841 char *bufp
= alloca (rs
->remote_packet_size
);
1842 int n
= 0; /* position in display_buf */
1844 if (remote_desc
== 0) /* paranoia */
1845 internal_error (__FILE__
, __LINE__
,
1846 "remote_threads_extra_info");
1848 if (use_threadextra_query
)
1850 sprintf (bufp
, "qThreadExtraInfo,%x", PIDGET (tp
->ptid
));
1852 getpkt (bufp
, (rs
->remote_packet_size
), 0);
1855 n
= min (strlen (bufp
) / 2, sizeof (display_buf
));
1856 result
= hex2bin (bufp
, display_buf
, n
);
1857 display_buf
[result
] = '\0';
1862 /* If the above query fails, fall back to the old method. */
1863 use_threadextra_query
= 0;
1864 set
= TAG_THREADID
| TAG_EXISTS
| TAG_THREADNAME
1865 | TAG_MOREDISPLAY
| TAG_DISPLAY
;
1866 int_to_threadref (&id
, PIDGET (tp
->ptid
));
1867 if (remote_get_threadinfo (&id
, set
, &threadinfo
))
1868 if (threadinfo
.active
)
1870 if (*threadinfo
.shortname
)
1871 n
+= sprintf(&display_buf
[0], " Name: %s,", threadinfo
.shortname
);
1872 if (*threadinfo
.display
)
1873 n
+= sprintf(&display_buf
[n
], " State: %s,", threadinfo
.display
);
1874 if (*threadinfo
.more_display
)
1875 n
+= sprintf(&display_buf
[n
], " Priority: %s",
1876 threadinfo
.more_display
);
1880 /* for purely cosmetic reasons, clear up trailing commas */
1881 if (',' == display_buf
[n
-1])
1882 display_buf
[n
-1] = ' ';
1891 /* Restart the remote side; this is an extended protocol operation. */
1894 extended_remote_restart (void)
1896 struct remote_state
*rs
= get_remote_state ();
1897 char *buf
= alloca (rs
->remote_packet_size
);
1899 /* Send the restart command; for reasons I don't understand the
1900 remote side really expects a number after the "R". */
1902 sprintf (&buf
[1], "%x", 0);
1905 /* Now query for status so this looks just like we restarted
1906 gdbserver from scratch. */
1908 getpkt (buf
, (rs
->remote_packet_size
), 0);
1911 /* Clean up connection to a remote debugger. */
1915 remote_close (int quitting
)
1918 serial_close (remote_desc
);
1922 /* Query the remote side for the text, data and bss offsets. */
1927 struct remote_state
*rs
= get_remote_state ();
1928 char *buf
= alloca (rs
->remote_packet_size
);
1931 CORE_ADDR text_addr
, data_addr
, bss_addr
;
1932 struct section_offsets
*offs
;
1934 putpkt ("qOffsets");
1936 getpkt (buf
, (rs
->remote_packet_size
), 0);
1938 if (buf
[0] == '\000')
1939 return; /* Return silently. Stub doesn't support
1943 warning ("Remote failure reply: %s", buf
);
1947 /* Pick up each field in turn. This used to be done with scanf, but
1948 scanf will make trouble if CORE_ADDR size doesn't match
1949 conversion directives correctly. The following code will work
1950 with any size of CORE_ADDR. */
1951 text_addr
= data_addr
= bss_addr
= 0;
1955 if (strncmp (ptr
, "Text=", 5) == 0)
1958 /* Don't use strtol, could lose on big values. */
1959 while (*ptr
&& *ptr
!= ';')
1960 text_addr
= (text_addr
<< 4) + fromhex (*ptr
++);
1965 if (!lose
&& strncmp (ptr
, ";Data=", 6) == 0)
1968 while (*ptr
&& *ptr
!= ';')
1969 data_addr
= (data_addr
<< 4) + fromhex (*ptr
++);
1974 if (!lose
&& strncmp (ptr
, ";Bss=", 5) == 0)
1977 while (*ptr
&& *ptr
!= ';')
1978 bss_addr
= (bss_addr
<< 4) + fromhex (*ptr
++);
1984 error ("Malformed response to offset query, %s", buf
);
1986 if (symfile_objfile
== NULL
)
1989 offs
= ((struct section_offsets
*)
1990 alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
)));
1991 memcpy (offs
, symfile_objfile
->section_offsets
,
1992 SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
));
1994 offs
->offsets
[SECT_OFF_TEXT (symfile_objfile
)] = text_addr
;
1996 /* This is a temporary kludge to force data and bss to use the same offsets
1997 because that's what nlmconv does now. The real solution requires changes
1998 to the stub and remote.c that I don't have time to do right now. */
2000 offs
->offsets
[SECT_OFF_DATA (symfile_objfile
)] = data_addr
;
2001 offs
->offsets
[SECT_OFF_BSS (symfile_objfile
)] = data_addr
;
2003 objfile_relocate (symfile_objfile
, offs
);
2007 * Cisco version of section offsets:
2009 * Instead of having GDB query the target for the section offsets,
2010 * Cisco lets the target volunteer the information! It's also in
2011 * a different format, so here are the functions that will decode
2012 * a section offset packet from a Cisco target.
2016 * Function: remote_cisco_section_offsets
2018 * Returns: zero for success, non-zero for failure
2022 remote_cisco_section_offsets (bfd_vma text_addr
,
2025 bfd_signed_vma
*text_offs
,
2026 bfd_signed_vma
*data_offs
,
2027 bfd_signed_vma
*bss_offs
)
2029 bfd_vma text_base
, data_base
, bss_base
;
2030 struct minimal_symbol
*start
;
2035 if (symfile_objfile
== NULL
)
2036 return -1; /* no can do nothin' */
2038 start
= lookup_minimal_symbol ("_start", NULL
, NULL
);
2040 return -1; /* Can't find "_start" symbol */
2042 data_base
= bss_base
= 0;
2043 text_base
= SYMBOL_VALUE_ADDRESS (start
);
2045 abfd
= symfile_objfile
->obfd
;
2046 for (sect
= abfd
->sections
;
2050 const char *p
= bfd_get_section_name (abfd
, sect
);
2052 if (strcmp (p
+ len
- 4, "data") == 0) /* ends in "data" */
2053 if (data_base
== 0 ||
2054 data_base
> bfd_get_section_vma (abfd
, sect
))
2055 data_base
= bfd_get_section_vma (abfd
, sect
);
2056 if (strcmp (p
+ len
- 3, "bss") == 0) /* ends in "bss" */
2057 if (bss_base
== 0 ||
2058 bss_base
> bfd_get_section_vma (abfd
, sect
))
2059 bss_base
= bfd_get_section_vma (abfd
, sect
);
2061 *text_offs
= text_addr
- text_base
;
2062 *data_offs
= data_addr
- data_base
;
2063 *bss_offs
= bss_addr
- bss_base
;
2068 sprintf (tmp
, "VMA: text = 0x");
2069 sprintf_vma (tmp
+ strlen (tmp
), text_addr
);
2070 sprintf (tmp
+ strlen (tmp
), " data = 0x");
2071 sprintf_vma (tmp
+ strlen (tmp
), data_addr
);
2072 sprintf (tmp
+ strlen (tmp
), " bss = 0x");
2073 sprintf_vma (tmp
+ strlen (tmp
), bss_addr
);
2074 fprintf_filtered (gdb_stdlog
, tmp
);
2075 fprintf_filtered (gdb_stdlog
,
2076 "Reloc offset: text = 0x%s data = 0x%s bss = 0x%s\n",
2077 paddr_nz (*text_offs
),
2078 paddr_nz (*data_offs
),
2079 paddr_nz (*bss_offs
));
2086 * Function: remote_cisco_objfile_relocate
2088 * Relocate the symbol file for a remote target.
2092 remote_cisco_objfile_relocate (bfd_signed_vma text_off
, bfd_signed_vma data_off
,
2093 bfd_signed_vma bss_off
)
2095 struct section_offsets
*offs
;
2097 if (text_off
!= 0 || data_off
!= 0 || bss_off
!= 0)
2099 /* FIXME: This code assumes gdb-stabs.h is being used; it's
2100 broken for xcoff, dwarf, sdb-coff, etc. But there is no
2101 simple canonical representation for this stuff. */
2103 offs
= (struct section_offsets
*)
2104 alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
));
2105 memcpy (offs
, symfile_objfile
->section_offsets
,
2106 SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
));
2108 offs
->offsets
[SECT_OFF_TEXT (symfile_objfile
)] = text_off
;
2109 offs
->offsets
[SECT_OFF_DATA (symfile_objfile
)] = data_off
;
2110 offs
->offsets
[SECT_OFF_BSS (symfile_objfile
)] = bss_off
;
2112 /* First call the standard objfile_relocate. */
2113 objfile_relocate (symfile_objfile
, offs
);
2115 /* Now we need to fix up the section entries already attached to
2116 the exec target. These entries will control memory transfers
2117 from the exec file. */
2119 exec_set_section_offsets (text_off
, data_off
, bss_off
);
2123 /* Stub for catch_errors. */
2126 remote_start_remote_dummy (struct ui_out
*uiout
, void *dummy
)
2128 start_remote (); /* Initialize gdb process mechanisms */
2129 /* NOTE: Return something >=0. A -ve value is reserved for
2130 catch_exceptions. */
2135 remote_start_remote (struct ui_out
*uiout
, void *dummy
)
2137 immediate_quit
++; /* Allow user to interrupt it */
2139 /* Ack any packet which the remote side has already sent. */
2140 serial_write (remote_desc
, "+", 1);
2142 /* Let the stub know that we want it to return the thread. */
2145 inferior_ptid
= remote_current_thread (inferior_ptid
);
2147 get_offsets (); /* Get text, data & bss offsets */
2149 putpkt ("?"); /* initiate a query from remote machine */
2152 /* NOTE: See comment above in remote_start_remote_dummy(). This
2153 function returns something >=0. */
2154 return remote_start_remote_dummy (uiout
, dummy
);
2157 /* Open a connection to a remote debugger.
2158 NAME is the filename used for communication. */
2161 remote_open (char *name
, int from_tty
)
2163 remote_open_1 (name
, from_tty
, &remote_ops
, 0, 0);
2166 /* Just like remote_open, but with asynchronous support. */
2168 remote_async_open (char *name
, int from_tty
)
2170 remote_open_1 (name
, from_tty
, &remote_async_ops
, 0, 1);
2173 /* Open a connection to a remote debugger using the extended
2174 remote gdb protocol. NAME is the filename used for communication. */
2177 extended_remote_open (char *name
, int from_tty
)
2179 remote_open_1 (name
, from_tty
, &extended_remote_ops
, 1 /*extended_p */,
2183 /* Just like extended_remote_open, but with asynchronous support. */
2185 extended_remote_async_open (char *name
, int from_tty
)
2187 remote_open_1 (name
, from_tty
, &extended_async_remote_ops
,
2188 1 /*extended_p */, 1 /* async_p */);
2191 /* Generic code for opening a connection to a remote target. */
2194 init_all_packet_configs (void)
2197 update_packet_config (&remote_protocol_e
);
2198 update_packet_config (&remote_protocol_E
);
2199 update_packet_config (&remote_protocol_P
);
2200 update_packet_config (&remote_protocol_qSymbol
);
2201 for (i
= 0; i
< NR_Z_PACKET_TYPES
; i
++)
2202 update_packet_config (&remote_protocol_Z
[i
]);
2203 /* Force remote_write_bytes to check whether target supports binary
2205 update_packet_config (&remote_protocol_binary_download
);
2208 /* Symbol look-up. */
2211 remote_check_symbols (struct objfile
*objfile
)
2213 struct remote_state
*rs
= get_remote_state ();
2214 char *msg
, *reply
, *tmp
;
2215 struct minimal_symbol
*sym
;
2218 if (remote_protocol_qSymbol
.support
== PACKET_DISABLE
)
2221 msg
= alloca (rs
->remote_packet_size
);
2222 reply
= alloca (rs
->remote_packet_size
);
2224 /* Invite target to request symbol lookups. */
2226 putpkt ("qSymbol::");
2227 getpkt (reply
, (rs
->remote_packet_size
), 0);
2228 packet_ok (reply
, &remote_protocol_qSymbol
);
2230 while (strncmp (reply
, "qSymbol:", 8) == 0)
2233 end
= hex2bin (tmp
, msg
, strlen (tmp
) / 2);
2235 sym
= lookup_minimal_symbol (msg
, NULL
, NULL
);
2237 sprintf (msg
, "qSymbol::%s", &reply
[8]);
2239 sprintf (msg
, "qSymbol:%s:%s",
2240 paddr_nz (SYMBOL_VALUE_ADDRESS (sym
)),
2243 getpkt (reply
, (rs
->remote_packet_size
), 0);
2247 static struct serial
*
2248 remote_serial_open (char *name
)
2250 static int udp_warning
= 0;
2252 /* FIXME: Parsing NAME here is a hack. But we want to warn here instead
2253 of in ser-tcp.c, because it is the remote protocol assuming that the
2254 serial connection is reliable and not the serial connection promising
2256 if (!udp_warning
&& strncmp (name
, "udp:", 4) == 0)
2258 warning ("The remote protocol may be unreliable over UDP.");
2259 warning ("Some events may be lost, rendering further debugging "
2264 return serial_open (name
);
2268 remote_open_1 (char *name
, int from_tty
, struct target_ops
*target
,
2269 int extended_p
, int async_p
)
2272 struct remote_state
*rs
= get_remote_state ();
2274 error ("To open a remote debug connection, you need to specify what\n"
2275 "serial device is attached to the remote system\n"
2276 "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).");
2278 /* See FIXME above */
2280 wait_forever_enabled_p
= 1;
2282 target_preopen (from_tty
);
2284 unpush_target (target
);
2286 remote_desc
= remote_serial_open (name
);
2288 perror_with_name (name
);
2290 if (baud_rate
!= -1)
2292 if (serial_setbaudrate (remote_desc
, baud_rate
))
2294 serial_close (remote_desc
);
2295 perror_with_name (name
);
2299 serial_raw (remote_desc
);
2301 /* If there is something sitting in the buffer we might take it as a
2302 response to a command, which would be bad. */
2303 serial_flush_input (remote_desc
);
2307 puts_filtered ("Remote debugging using ");
2308 puts_filtered (name
);
2309 puts_filtered ("\n");
2311 push_target (target
); /* Switch to using remote target now */
2313 init_all_packet_configs ();
2315 general_thread
= -2;
2316 continue_thread
= -2;
2318 /* Probe for ability to use "ThreadInfo" query, as required. */
2319 use_threadinfo_query
= 1;
2320 use_threadextra_query
= 1;
2322 /* Without this, some commands which require an active target (such
2323 as kill) won't work. This variable serves (at least) double duty
2324 as both the pid of the target process (if it has such), and as a
2325 flag indicating that a target is active. These functions should
2326 be split out into seperate variables, especially since GDB will
2327 someday have a notion of debugging several processes. */
2329 inferior_ptid
= pid_to_ptid (MAGIC_NULL_PID
);
2333 /* With this target we start out by owning the terminal. */
2334 remote_async_terminal_ours_p
= 1;
2336 /* FIXME: cagney/1999-09-23: During the initial connection it is
2337 assumed that the target is already ready and able to respond to
2338 requests. Unfortunately remote_start_remote() eventually calls
2339 wait_for_inferior() with no timeout. wait_forever_enabled_p gets
2340 around this. Eventually a mechanism that allows
2341 wait_for_inferior() to expect/get timeouts will be
2343 wait_forever_enabled_p
= 0;
2346 #ifdef SOLIB_CREATE_INFERIOR_HOOK
2347 /* First delete any symbols previously loaded from shared libraries. */
2348 no_shared_libraries (NULL
, 0);
2351 /* Start the remote connection. If error() or QUIT, discard this
2352 target (we'd otherwise be in an inconsistent state) and then
2353 propogate the error on up the exception chain. This ensures that
2354 the caller doesn't stumble along blindly assuming that the
2355 function succeeded. The CLI doesn't have this problem but other
2356 UI's, such as MI do.
2358 FIXME: cagney/2002-05-19: Instead of re-throwing the exception,
2359 this function should return an error indication letting the
2360 caller restore the previous state. Unfortunatly the command
2361 ``target remote'' is directly wired to this function making that
2362 impossible. On a positive note, the CLI side of this problem has
2363 been fixed - the function set_cmd_context() makes it possible for
2364 all the ``target ....'' commands to share a common callback
2365 function. See cli-dump.c. */
2366 ex
= catch_exceptions (uiout
,
2367 remote_start_remote
, NULL
,
2368 "Couldn't establish connection to remote"
2375 wait_forever_enabled_p
= 1;
2376 throw_exception (ex
);
2380 wait_forever_enabled_p
= 1;
2384 /* Tell the remote that we are using the extended protocol. */
2385 char *buf
= alloca (rs
->remote_packet_size
);
2387 getpkt (buf
, (rs
->remote_packet_size
), 0);
2389 #ifdef SOLIB_CREATE_INFERIOR_HOOK
2390 /* FIXME: need a master target_open vector from which all
2391 remote_opens can be called, so that stuff like this can
2392 go there. Failing that, the following code must be copied
2393 to the open function for any remote target that wants to
2394 support svr4 shared libraries. */
2396 /* Set up to detect and load shared libraries. */
2397 if (exec_bfd
) /* No use without an exec file. */
2399 SOLIB_CREATE_INFERIOR_HOOK (PIDGET (inferior_ptid
));
2400 remote_check_symbols (symfile_objfile
);
2405 /* This takes a program previously attached to and detaches it. After
2406 this is done, GDB can be used to debug some other program. We
2407 better not have left any breakpoints in the target program or it'll
2408 die when it hits one. */
2411 remote_detach (char *args
, int from_tty
)
2413 struct remote_state
*rs
= get_remote_state ();
2414 char *buf
= alloca (rs
->remote_packet_size
);
2417 error ("Argument given to \"detach\" when remotely debugging.");
2419 /* Tell the remote target to detach. */
2421 remote_send (buf
, (rs
->remote_packet_size
));
2423 /* Unregister the file descriptor from the event loop. */
2424 if (target_is_async_p ())
2425 serial_async (remote_desc
, NULL
, 0);
2427 target_mourn_inferior ();
2429 puts_filtered ("Ending remote debugging.\n");
2432 /* Same as remote_detach, but don't send the "D" packet; just disconnect. */
2435 remote_disconnect (char *args
, int from_tty
)
2437 struct remote_state
*rs
= get_remote_state ();
2438 char *buf
= alloca (rs
->remote_packet_size
);
2441 error ("Argument given to \"detach\" when remotely debugging.");
2443 /* Unregister the file descriptor from the event loop. */
2444 if (target_is_async_p ())
2445 serial_async (remote_desc
, NULL
, 0);
2447 target_mourn_inferior ();
2449 puts_filtered ("Ending remote debugging.\n");
2452 /* Convert hex digit A to a number. */
2457 if (a
>= '0' && a
<= '9')
2459 else if (a
>= 'a' && a
<= 'f')
2460 return a
- 'a' + 10;
2461 else if (a
>= 'A' && a
<= 'F')
2462 return a
- 'A' + 10;
2464 error ("Reply contains invalid hex digit %d", a
);
2468 hex2bin (const char *hex
, char *bin
, int count
)
2472 for (i
= 0; i
< count
; i
++)
2474 if (hex
[0] == 0 || hex
[1] == 0)
2476 /* Hex string is short, or of uneven length.
2477 Return the count that has been converted so far. */
2480 *bin
++ = fromhex (hex
[0]) * 16 + fromhex (hex
[1]);
2486 /* Convert number NIB to a hex digit. */
2494 return 'a' + nib
- 10;
2498 bin2hex (const char *bin
, char *hex
, int count
)
2501 /* May use a length, or a nul-terminated string as input. */
2503 count
= strlen (bin
);
2505 for (i
= 0; i
< count
; i
++)
2507 *hex
++ = tohex ((*bin
>> 4) & 0xf);
2508 *hex
++ = tohex (*bin
++ & 0xf);
2514 /* Tell the remote machine to resume. */
2516 static enum target_signal last_sent_signal
= TARGET_SIGNAL_0
;
2518 static int last_sent_step
;
2521 remote_resume (ptid_t ptid
, int step
, enum target_signal siggnal
)
2523 struct remote_state
*rs
= get_remote_state ();
2524 char *buf
= alloca (rs
->remote_packet_size
);
2525 int pid
= PIDGET (ptid
);
2529 set_thread (0, 0); /* run any thread */
2531 set_thread (pid
, 0); /* run this thread */
2533 last_sent_signal
= siggnal
;
2534 last_sent_step
= step
;
2536 /* A hook for when we need to do something at the last moment before
2538 if (target_resume_hook
)
2539 (*target_resume_hook
) ();
2542 /* The s/S/c/C packets do not return status. So if the target does
2543 not support the S or C packets, the debug agent returns an empty
2544 string which is detected in remote_wait(). This protocol defect
2545 is fixed in the e/E packets. */
2547 if (step
&& step_range_end
)
2549 /* If the target does not support the 'E' packet, we try the 'S'
2550 packet. Ideally we would fall back to the 'e' packet if that
2551 too is not supported. But that would require another copy of
2552 the code to issue the 'e' packet (and fall back to 's' if not
2553 supported) in remote_wait(). */
2555 if (siggnal
!= TARGET_SIGNAL_0
)
2557 if (remote_protocol_E
.support
!= PACKET_DISABLE
)
2561 *p
++ = tohex (((int) siggnal
>> 4) & 0xf);
2562 *p
++ = tohex (((int) siggnal
) & 0xf);
2564 p
+= hexnumstr (p
, (ULONGEST
) step_range_start
);
2566 p
+= hexnumstr (p
, (ULONGEST
) step_range_end
);
2570 getpkt (buf
, (rs
->remote_packet_size
), 0);
2572 if (packet_ok (buf
, &remote_protocol_E
) == PACKET_OK
)
2578 if (remote_protocol_e
.support
!= PACKET_DISABLE
)
2582 p
+= hexnumstr (p
, (ULONGEST
) step_range_start
);
2584 p
+= hexnumstr (p
, (ULONGEST
) step_range_end
);
2588 getpkt (buf
, (rs
->remote_packet_size
), 0);
2590 if (packet_ok (buf
, &remote_protocol_e
) == PACKET_OK
)
2596 if (siggnal
!= TARGET_SIGNAL_0
)
2598 buf
[0] = step
? 'S' : 'C';
2599 buf
[1] = tohex (((int) siggnal
>> 4) & 0xf);
2600 buf
[2] = tohex (((int) siggnal
) & 0xf);
2604 strcpy (buf
, step
? "s" : "c");
2609 /* Same as remote_resume, but with async support. */
2611 remote_async_resume (ptid_t ptid
, int step
, enum target_signal siggnal
)
2613 struct remote_state
*rs
= get_remote_state ();
2614 char *buf
= alloca (rs
->remote_packet_size
);
2615 int pid
= PIDGET (ptid
);
2619 set_thread (0, 0); /* run any thread */
2621 set_thread (pid
, 0); /* run this thread */
2623 last_sent_signal
= siggnal
;
2624 last_sent_step
= step
;
2626 /* A hook for when we need to do something at the last moment before
2628 if (target_resume_hook
)
2629 (*target_resume_hook
) ();
2631 /* The s/S/c/C packets do not return status. So if the target does
2632 not support the S or C packets, the debug agent returns an empty
2633 string which is detected in remote_wait(). This protocol defect
2634 is fixed in the e/E packets. */
2636 if (step
&& step_range_end
)
2638 /* If the target does not support the 'E' packet, we try the 'S'
2639 packet. Ideally we would fall back to the 'e' packet if that
2640 too is not supported. But that would require another copy of
2641 the code to issue the 'e' packet (and fall back to 's' if not
2642 supported) in remote_wait(). */
2644 if (siggnal
!= TARGET_SIGNAL_0
)
2646 if (remote_protocol_E
.support
!= PACKET_DISABLE
)
2650 *p
++ = tohex (((int) siggnal
>> 4) & 0xf);
2651 *p
++ = tohex (((int) siggnal
) & 0xf);
2653 p
+= hexnumstr (p
, (ULONGEST
) step_range_start
);
2655 p
+= hexnumstr (p
, (ULONGEST
) step_range_end
);
2659 getpkt (buf
, (rs
->remote_packet_size
), 0);
2661 if (packet_ok (buf
, &remote_protocol_E
) == PACKET_OK
)
2662 goto register_event_loop
;
2667 if (remote_protocol_e
.support
!= PACKET_DISABLE
)
2671 p
+= hexnumstr (p
, (ULONGEST
) step_range_start
);
2673 p
+= hexnumstr (p
, (ULONGEST
) step_range_end
);
2677 getpkt (buf
, (rs
->remote_packet_size
), 0);
2679 if (packet_ok (buf
, &remote_protocol_e
) == PACKET_OK
)
2680 goto register_event_loop
;
2685 if (siggnal
!= TARGET_SIGNAL_0
)
2687 buf
[0] = step
? 'S' : 'C';
2688 buf
[1] = tohex (((int) siggnal
>> 4) & 0xf);
2689 buf
[2] = tohex ((int) siggnal
& 0xf);
2693 strcpy (buf
, step
? "s" : "c");
2697 register_event_loop
:
2698 /* We are about to start executing the inferior, let's register it
2699 with the event loop. NOTE: this is the one place where all the
2700 execution commands end up. We could alternatively do this in each
2701 of the execution commands in infcmd.c.*/
2702 /* FIXME: ezannoni 1999-09-28: We may need to move this out of here
2703 into infcmd.c in order to allow inferior function calls to work
2704 NOT asynchronously. */
2705 if (event_loop_p
&& target_can_async_p ())
2706 target_async (inferior_event_handler
, 0);
2707 /* Tell the world that the target is now executing. */
2708 /* FIXME: cagney/1999-09-23: Is it the targets responsibility to set
2709 this? Instead, should the client of target just assume (for
2710 async targets) that the target is going to start executing? Is
2711 this information already found in the continuation block? */
2712 if (target_is_async_p ())
2713 target_executing
= 1;
2717 /* Set up the signal handler for SIGINT, while the target is
2718 executing, ovewriting the 'regular' SIGINT signal handler. */
2720 initialize_sigint_signal_handler (void)
2722 sigint_remote_token
=
2723 create_async_signal_handler (async_remote_interrupt
, NULL
);
2724 signal (SIGINT
, handle_remote_sigint
);
2727 /* Signal handler for SIGINT, while the target is executing. */
2729 handle_remote_sigint (int sig
)
2731 signal (sig
, handle_remote_sigint_twice
);
2732 sigint_remote_twice_token
=
2733 create_async_signal_handler (async_remote_interrupt_twice
, NULL
);
2734 mark_async_signal_handler_wrapper (sigint_remote_token
);
2737 /* Signal handler for SIGINT, installed after SIGINT has already been
2738 sent once. It will take effect the second time that the user sends
2741 handle_remote_sigint_twice (int sig
)
2743 signal (sig
, handle_sigint
);
2744 sigint_remote_twice_token
=
2745 create_async_signal_handler (inferior_event_handler_wrapper
, NULL
);
2746 mark_async_signal_handler_wrapper (sigint_remote_twice_token
);
2749 /* Perform the real interruption of the target execution, in response
2752 async_remote_interrupt (gdb_client_data arg
)
2755 fprintf_unfiltered (gdb_stdlog
, "remote_interrupt called\n");
2760 /* Perform interrupt, if the first attempt did not succeed. Just give
2761 up on the target alltogether. */
2763 async_remote_interrupt_twice (gdb_client_data arg
)
2766 fprintf_unfiltered (gdb_stdlog
, "remote_interrupt_twice called\n");
2767 /* Do something only if the target was not killed by the previous
2769 if (target_executing
)
2772 signal (SIGINT
, handle_remote_sigint
);
2776 /* Reinstall the usual SIGINT handlers, after the target has
2779 cleanup_sigint_signal_handler (void *dummy
)
2781 signal (SIGINT
, handle_sigint
);
2782 if (sigint_remote_twice_token
)
2783 delete_async_signal_handler ((struct async_signal_handler
**) & sigint_remote_twice_token
);
2784 if (sigint_remote_token
)
2785 delete_async_signal_handler ((struct async_signal_handler
**) & sigint_remote_token
);
2788 /* Send ^C to target to halt it. Target will respond, and send us a
2790 static void (*ofunc
) (int);
2792 /* The command line interface's stop routine. This function is installed
2793 as a signal handler for SIGINT. The first time a user requests a
2794 stop, we call remote_stop to send a break or ^C. If there is no
2795 response from the target (it didn't stop when the user requested it),
2796 we ask the user if he'd like to detach from the target. */
2798 remote_interrupt (int signo
)
2800 /* If this doesn't work, try more severe steps. */
2801 signal (signo
, remote_interrupt_twice
);
2804 fprintf_unfiltered (gdb_stdlog
, "remote_interrupt called\n");
2809 /* The user typed ^C twice. */
2812 remote_interrupt_twice (int signo
)
2814 signal (signo
, ofunc
);
2816 signal (signo
, remote_interrupt
);
2819 /* This is the generic stop called via the target vector. When a target
2820 interrupt is requested, either by the command line or the GUI, we
2821 will eventually end up here. */
2825 /* Send a break or a ^C, depending on user preference. */
2827 fprintf_unfiltered (gdb_stdlog
, "remote_stop called\n");
2830 serial_send_break (remote_desc
);
2832 serial_write (remote_desc
, "\003", 1);
2835 /* Ask the user what to do when an interrupt is received. */
2838 interrupt_query (void)
2840 target_terminal_ours ();
2842 if (query ("Interrupted while waiting for the program.\n\
2843 Give up (and stop debugging it)? "))
2845 target_mourn_inferior ();
2846 throw_exception (RETURN_QUIT
);
2849 target_terminal_inferior ();
2852 /* Enable/disable target terminal ownership. Most targets can use
2853 terminal groups to control terminal ownership. Remote targets are
2854 different in that explicit transfer of ownership to/from GDB/target
2858 remote_async_terminal_inferior (void)
2860 /* FIXME: cagney/1999-09-27: Shouldn't need to test for
2861 sync_execution here. This function should only be called when
2862 GDB is resuming the inferior in the forground. A background
2863 resume (``run&'') should leave GDB in control of the terminal and
2864 consequently should not call this code. */
2865 if (!sync_execution
)
2867 /* FIXME: cagney/1999-09-27: Closely related to the above. Make
2868 calls target_terminal_*() idenpotent. The event-loop GDB talking
2869 to an asynchronous target with a synchronous command calls this
2870 function from both event-top.c and infrun.c/infcmd.c. Once GDB
2871 stops trying to transfer the terminal to the target when it
2872 shouldn't this guard can go away. */
2873 if (!remote_async_terminal_ours_p
)
2875 delete_file_handler (input_fd
);
2876 remote_async_terminal_ours_p
= 0;
2877 initialize_sigint_signal_handler ();
2878 /* NOTE: At this point we could also register our selves as the
2879 recipient of all input. Any characters typed could then be
2880 passed on down to the target. */
2884 remote_async_terminal_ours (void)
2886 /* See FIXME in remote_async_terminal_inferior. */
2887 if (!sync_execution
)
2889 /* See FIXME in remote_async_terminal_inferior. */
2890 if (remote_async_terminal_ours_p
)
2892 cleanup_sigint_signal_handler (NULL
);
2893 add_file_handler (input_fd
, stdin_event_handler
, 0);
2894 remote_async_terminal_ours_p
= 1;
2897 /* If nonzero, ignore the next kill. */
2902 remote_console_output (char *msg
)
2906 for (p
= msg
; p
[0] && p
[1]; p
+= 2)
2909 char c
= fromhex (p
[0]) * 16 + fromhex (p
[1]);
2912 fputs_unfiltered (tb
, gdb_stdtarg
);
2914 gdb_flush (gdb_stdtarg
);
2917 /* Wait until the remote machine stops, then return,
2918 storing status in STATUS just as `wait' would.
2919 Returns "pid", which in the case of a multi-threaded
2920 remote OS, is the thread-id. */
2923 remote_wait (ptid_t ptid
, struct target_waitstatus
*status
)
2925 struct remote_state
*rs
= get_remote_state ();
2926 unsigned char *buf
= alloca (rs
->remote_packet_size
);
2927 ULONGEST thread_num
= -1;
2930 status
->kind
= TARGET_WAITKIND_EXITED
;
2931 status
->value
.integer
= 0;
2937 ofunc
= signal (SIGINT
, remote_interrupt
);
2938 getpkt (buf
, (rs
->remote_packet_size
), 1);
2939 signal (SIGINT
, ofunc
);
2941 /* This is a hook for when we need to do something (perhaps the
2942 collection of trace data) every time the target stops. */
2943 if (target_wait_loop_hook
)
2944 (*target_wait_loop_hook
) ();
2946 remote_stopped_by_watchpoint_p
= 0;
2950 case 'E': /* Error of some sort */
2951 warning ("Remote failure reply: %s", buf
);
2953 case 'F': /* File-I/O request */
2954 remote_fileio_request (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 error ("Malformed packet(b) (missing colon): %s\nPacket: '%s'\n",
3031 error ("Remote sent bad register number %s: %s\nPacket: '%s'\n",
3032 phex_nz (pnum
, 0), p
, buf
);
3034 fieldsize
= hex2bin (p
, regs
, REGISTER_RAW_SIZE (reg
->regnum
));
3036 if (fieldsize
< REGISTER_RAW_SIZE (reg
->regnum
))
3037 warning ("Remote reply is too short: %s", buf
);
3038 supply_register (reg
->regnum
, regs
);
3042 error ("Remote register badly formatted: %s\nhere: %s", buf
, p
);
3046 case 'S': /* Old style status, just signal only */
3047 status
->kind
= TARGET_WAITKIND_STOPPED
;
3048 status
->value
.sig
= (enum target_signal
)
3049 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
3053 /* Export Cisco kernel mode as a convenience variable
3054 (so that it can be used in the GDB prompt if desired). */
3056 if (cisco_kernel_mode
== 1)
3057 set_internalvar (lookup_internalvar ("cisco_kernel_mode"),
3058 value_from_string ("PDEBUG-"));
3059 cisco_kernel_mode
= 0;
3060 thread_num
= strtol ((const char *) &buf
[4], NULL
, 16);
3061 record_currthread (thread_num
);
3063 else if (buf
[3] == 'k')
3065 /* Export Cisco kernel mode as a convenience variable
3066 (so that it can be used in the GDB prompt if desired). */
3068 if (cisco_kernel_mode
== 1)
3069 set_internalvar (lookup_internalvar ("cisco_kernel_mode"),
3070 value_from_string ("KDEBUG-"));
3071 cisco_kernel_mode
= 1;
3074 case 'N': /* Cisco special: status and offsets */
3076 bfd_vma text_addr
, data_addr
, bss_addr
;
3077 bfd_signed_vma text_off
, data_off
, bss_off
;
3080 status
->kind
= TARGET_WAITKIND_STOPPED
;
3081 status
->value
.sig
= (enum target_signal
)
3082 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
3084 if (symfile_objfile
== NULL
)
3086 warning ("Relocation packet received with no symbol file. \
3091 /* Relocate object file. Buffer format is NAATT;DD;BB
3092 * where AA is the signal number, TT is the new text
3093 * address, DD * is the new data address, and BB is the
3094 * new bss address. */
3097 text_addr
= strtoul (p
, (char **) &p1
, 16);
3098 if (p1
== p
|| *p1
!= ';')
3099 warning ("Malformed relocation packet: Packet '%s'", buf
);
3101 data_addr
= strtoul (p
, (char **) &p1
, 16);
3102 if (p1
== p
|| *p1
!= ';')
3103 warning ("Malformed relocation packet: Packet '%s'", buf
);
3105 bss_addr
= strtoul (p
, (char **) &p1
, 16);
3107 warning ("Malformed relocation packet: Packet '%s'", buf
);
3109 if (remote_cisco_section_offsets (text_addr
, data_addr
, bss_addr
,
3110 &text_off
, &data_off
, &bss_off
)
3112 if (text_off
!= 0 || data_off
!= 0 || bss_off
!= 0)
3113 remote_cisco_objfile_relocate (text_off
, data_off
, bss_off
);
3117 case 'W': /* Target exited */
3119 /* The remote process exited. */
3120 status
->kind
= TARGET_WAITKIND_EXITED
;
3121 status
->value
.integer
= (fromhex (buf
[1]) << 4) + fromhex (buf
[2]);
3125 status
->kind
= TARGET_WAITKIND_SIGNALLED
;
3126 status
->value
.sig
= (enum target_signal
)
3127 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
3131 case 'O': /* Console output */
3132 remote_console_output (buf
+ 1);
3135 if (last_sent_signal
!= TARGET_SIGNAL_0
)
3137 /* Zero length reply means that we tried 'S' or 'C' and
3138 the remote system doesn't support it. */
3139 target_terminal_ours_for_output ();
3141 ("Can't send signals to this remote system. %s not sent.\n",
3142 target_signal_to_name (last_sent_signal
));
3143 last_sent_signal
= TARGET_SIGNAL_0
;
3144 target_terminal_inferior ();
3146 strcpy ((char *) buf
, last_sent_step
? "s" : "c");
3147 putpkt ((char *) buf
);
3150 /* else fallthrough */
3152 warning ("Invalid remote reply: %s", buf
);
3157 if (thread_num
!= -1)
3159 return pid_to_ptid (thread_num
);
3161 return inferior_ptid
;
3164 /* Async version of remote_wait. */
3166 remote_async_wait (ptid_t ptid
, struct target_waitstatus
*status
)
3168 struct remote_state
*rs
= get_remote_state ();
3169 unsigned char *buf
= alloca (rs
->remote_packet_size
);
3170 ULONGEST thread_num
= -1;
3173 status
->kind
= TARGET_WAITKIND_EXITED
;
3174 status
->value
.integer
= 0;
3176 remote_stopped_by_watchpoint_p
= 0;
3182 if (!target_is_async_p ())
3183 ofunc
= signal (SIGINT
, remote_interrupt
);
3184 /* FIXME: cagney/1999-09-27: If we're in async mode we should
3185 _never_ wait for ever -> test on target_is_async_p().
3186 However, before we do that we need to ensure that the caller
3187 knows how to take the target into/out of async mode. */
3188 getpkt (buf
, (rs
->remote_packet_size
), wait_forever_enabled_p
);
3189 if (!target_is_async_p ())
3190 signal (SIGINT
, ofunc
);
3192 /* This is a hook for when we need to do something (perhaps the
3193 collection of trace data) every time the target stops. */
3194 if (target_wait_loop_hook
)
3195 (*target_wait_loop_hook
) ();
3199 case 'E': /* Error of some sort */
3200 warning ("Remote failure reply: %s", buf
);
3202 case 'F': /* File-I/O request */
3203 remote_fileio_request (buf
);
3205 case 'T': /* Status with PC, SP, FP, ... */
3208 char regs
[MAX_REGISTER_SIZE
];
3210 /* Expedited reply, containing Signal, {regno, reg} repeat */
3211 /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where
3213 n... = register number
3214 r... = register contents
3216 p
= &buf
[3]; /* after Txx */
3225 /* If the packet contains a register number, save it in pnum
3226 and set p1 to point to the character following it.
3227 Otherwise p1 points to p. */
3229 /* If this packet is an awatch packet, don't parse the 'a'
3230 as a register number. */
3232 if (!strncmp (p
, "awatch", strlen ("awatch")) != 0)
3234 /* Read the register number. */
3235 pnum
= strtol (p
, &p_temp
, 16);
3236 p1
= (unsigned char *) p_temp
;
3241 if (p1
== p
) /* No register number present here */
3243 p1
= (unsigned char *) strchr (p
, ':');
3245 error ("Malformed packet(a) (missing colon): %s\nPacket: '%s'\n",
3247 if (strncmp (p
, "thread", p1
- p
) == 0)
3249 p_temp
= unpack_varlen_hex (++p1
, &thread_num
);
3250 record_currthread (thread_num
);
3251 p
= (unsigned char *) p_temp
;
3253 else if ((strncmp (p
, "watch", p1
- p
) == 0)
3254 || (strncmp (p
, "rwatch", p1
- p
) == 0)
3255 || (strncmp (p
, "awatch", p1
- p
) == 0))
3257 remote_stopped_by_watchpoint_p
= 1;
3258 p
= unpack_varlen_hex (++p1
, &addr
);
3259 remote_watch_data_address
= (CORE_ADDR
)addr
;
3263 /* Silently skip unknown optional info. */
3264 p_temp
= (unsigned char *) strchr (p1
+ 1, ';');
3272 struct packet_reg
*reg
= packet_reg_from_pnum (rs
, pnum
);
3275 error ("Malformed packet(b) (missing colon): %s\nPacket: '%s'\n",
3279 error ("Remote sent bad register number %ld: %s\nPacket: '%s'\n",
3282 fieldsize
= hex2bin (p
, regs
, REGISTER_RAW_SIZE (reg
->regnum
));
3284 if (fieldsize
< REGISTER_RAW_SIZE (reg
->regnum
))
3285 warning ("Remote reply is too short: %s", buf
);
3286 supply_register (reg
->regnum
, regs
);
3290 error ("Remote register badly formatted: %s\nhere:", buf
, p
);
3294 case 'S': /* Old style status, just signal only */
3295 status
->kind
= TARGET_WAITKIND_STOPPED
;
3296 status
->value
.sig
= (enum target_signal
)
3297 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
3301 /* Export Cisco kernel mode as a convenience variable
3302 (so that it can be used in the GDB prompt if desired). */
3304 if (cisco_kernel_mode
== 1)
3305 set_internalvar (lookup_internalvar ("cisco_kernel_mode"),
3306 value_from_string ("PDEBUG-"));
3307 cisco_kernel_mode
= 0;
3308 thread_num
= strtol ((const char *) &buf
[4], NULL
, 16);
3309 record_currthread (thread_num
);
3311 else if (buf
[3] == 'k')
3313 /* Export Cisco kernel mode as a convenience variable
3314 (so that it can be used in the GDB prompt if desired). */
3316 if (cisco_kernel_mode
== 1)
3317 set_internalvar (lookup_internalvar ("cisco_kernel_mode"),
3318 value_from_string ("KDEBUG-"));
3319 cisco_kernel_mode
= 1;
3322 case 'N': /* Cisco special: status and offsets */
3324 bfd_vma text_addr
, data_addr
, bss_addr
;
3325 bfd_signed_vma text_off
, data_off
, bss_off
;
3328 status
->kind
= TARGET_WAITKIND_STOPPED
;
3329 status
->value
.sig
= (enum target_signal
)
3330 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
3332 if (symfile_objfile
== NULL
)
3334 warning ("Relocation packet recieved with no symbol file. \
3339 /* Relocate object file. Buffer format is NAATT;DD;BB
3340 * where AA is the signal number, TT is the new text
3341 * address, DD * is the new data address, and BB is the
3342 * new bss address. */
3345 text_addr
= strtoul (p
, (char **) &p1
, 16);
3346 if (p1
== p
|| *p1
!= ';')
3347 warning ("Malformed relocation packet: Packet '%s'", buf
);
3349 data_addr
= strtoul (p
, (char **) &p1
, 16);
3350 if (p1
== p
|| *p1
!= ';')
3351 warning ("Malformed relocation packet: Packet '%s'", buf
);
3353 bss_addr
= strtoul (p
, (char **) &p1
, 16);
3355 warning ("Malformed relocation packet: Packet '%s'", buf
);
3357 if (remote_cisco_section_offsets (text_addr
, data_addr
, bss_addr
,
3358 &text_off
, &data_off
, &bss_off
)
3360 if (text_off
!= 0 || data_off
!= 0 || bss_off
!= 0)
3361 remote_cisco_objfile_relocate (text_off
, data_off
, bss_off
);
3365 case 'W': /* Target exited */
3367 /* The remote process exited. */
3368 status
->kind
= TARGET_WAITKIND_EXITED
;
3369 status
->value
.integer
= (fromhex (buf
[1]) << 4) + fromhex (buf
[2]);
3373 status
->kind
= TARGET_WAITKIND_SIGNALLED
;
3374 status
->value
.sig
= (enum target_signal
)
3375 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
3379 case 'O': /* Console output */
3380 remote_console_output (buf
+ 1);
3381 /* Return immediately to the event loop. The event loop will
3382 still be waiting on the inferior afterwards. */
3383 status
->kind
= TARGET_WAITKIND_IGNORE
;
3386 if (last_sent_signal
!= TARGET_SIGNAL_0
)
3388 /* Zero length reply means that we tried 'S' or 'C' and
3389 the remote system doesn't support it. */
3390 target_terminal_ours_for_output ();
3392 ("Can't send signals to this remote system. %s not sent.\n",
3393 target_signal_to_name (last_sent_signal
));
3394 last_sent_signal
= TARGET_SIGNAL_0
;
3395 target_terminal_inferior ();
3397 strcpy ((char *) buf
, last_sent_step
? "s" : "c");
3398 putpkt ((char *) buf
);
3401 /* else fallthrough */
3403 warning ("Invalid remote reply: %s", buf
);
3408 if (thread_num
!= -1)
3410 return pid_to_ptid (thread_num
);
3412 return inferior_ptid
;
3415 /* Number of bytes of registers this stub implements. */
3417 static int register_bytes_found
;
3419 /* Read the remote registers into the block REGS. */
3420 /* Currently we just read all the registers, so we don't use regnum. */
3424 remote_fetch_registers (int regnum
)
3426 struct remote_state
*rs
= get_remote_state ();
3427 char *buf
= alloca (rs
->remote_packet_size
);
3430 char *regs
= alloca (rs
->sizeof_g_packet
);
3432 set_thread (PIDGET (inferior_ptid
), 1);
3436 struct packet_reg
*reg
= packet_reg_from_regnum (rs
, regnum
);
3437 gdb_assert (reg
!= NULL
);
3438 if (!reg
->in_g_packet
)
3439 internal_error (__FILE__
, __LINE__
,
3440 "Attempt to fetch a non G-packet register when this "
3441 "remote.c does not support the p-packet.");
3445 remote_send (buf
, (rs
->remote_packet_size
));
3447 /* Save the size of the packet sent to us by the target. Its used
3448 as a heuristic when determining the max size of packets that the
3449 target can safely receive. */
3450 if ((rs
->actual_register_packet_size
) == 0)
3451 (rs
->actual_register_packet_size
) = strlen (buf
);
3453 /* Unimplemented registers read as all bits zero. */
3454 memset (regs
, 0, rs
->sizeof_g_packet
);
3456 /* We can get out of synch in various cases. If the first character
3457 in the buffer is not a hex character, assume that has happened
3458 and try to fetch another packet to read. */
3459 while ((buf
[0] < '0' || buf
[0] > '9')
3460 && (buf
[0] < 'a' || buf
[0] > 'f')
3461 && buf
[0] != 'x') /* New: unavailable register value */
3464 fprintf_unfiltered (gdb_stdlog
,
3465 "Bad register packet; fetching a new packet\n");
3466 getpkt (buf
, (rs
->remote_packet_size
), 0);
3469 /* Reply describes registers byte by byte, each byte encoded as two
3470 hex characters. Suck them all up, then supply them to the
3471 register cacheing/storage mechanism. */
3474 for (i
= 0; i
< rs
->sizeof_g_packet
; i
++)
3480 warning ("Remote reply is of odd length: %s", buf
);
3481 /* Don't change register_bytes_found in this case, and don't
3482 print a second warning. */
3485 if (p
[0] == 'x' && p
[1] == 'x')
3486 regs
[i
] = 0; /* 'x' */
3488 regs
[i
] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
3492 if (i
!= register_bytes_found
)
3494 register_bytes_found
= i
;
3495 if (REGISTER_BYTES_OK_P ()
3496 && !REGISTER_BYTES_OK (i
))
3497 warning ("Remote reply is too short: %s", buf
);
3503 for (i
= 0; i
< NUM_REGS
+ NUM_PSEUDO_REGS
; i
++)
3505 struct packet_reg
*r
= &rs
->regs
[i
];
3508 supply_register (r
->regnum
, regs
+ r
->offset
);
3509 if (buf
[r
->offset
* 2] == 'x')
3510 set_register_cached (i
, -1);
3516 /* Prepare to store registers. Since we may send them all (using a
3517 'G' request), we have to read out the ones we don't want to change
3521 remote_prepare_to_store (void)
3523 struct remote_state
*rs
= get_remote_state ();
3525 char buf
[MAX_REGISTER_SIZE
];
3527 /* Make sure the entire registers array is valid. */
3528 switch (remote_protocol_P
.support
)
3530 case PACKET_DISABLE
:
3531 case PACKET_SUPPORT_UNKNOWN
:
3532 /* Make sure all the necessary registers are cached. */
3533 for (i
= 0; i
< NUM_REGS
; i
++)
3534 if (rs
->regs
[i
].in_g_packet
)
3535 regcache_raw_read (current_regcache
, rs
->regs
[i
].regnum
, buf
);
3542 /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF
3543 packet was not recognized. */
3546 store_register_using_P (int regnum
)
3548 struct remote_state
*rs
= get_remote_state ();
3549 struct packet_reg
*reg
= packet_reg_from_regnum (rs
, regnum
);
3550 /* Try storing a single register. */
3551 char *buf
= alloca (rs
->remote_packet_size
);
3552 char regp
[MAX_REGISTER_SIZE
];
3556 sprintf (buf
, "P%s=", phex_nz (reg
->pnum
, 0));
3557 p
= buf
+ strlen (buf
);
3558 regcache_collect (reg
->regnum
, regp
);
3559 bin2hex (regp
, p
, REGISTER_RAW_SIZE (reg
->regnum
));
3560 remote_send (buf
, rs
->remote_packet_size
);
3562 return buf
[0] != '\0';
3566 /* Store register REGNUM, or all registers if REGNUM == -1, from the contents
3567 of the register cache buffer. FIXME: ignores errors. */
3570 remote_store_registers (int regnum
)
3572 struct remote_state
*rs
= get_remote_state ();
3578 set_thread (PIDGET (inferior_ptid
), 1);
3582 switch (remote_protocol_P
.support
)
3584 case PACKET_DISABLE
:
3587 if (store_register_using_P (regnum
))
3590 error ("Protocol error: P packet not recognized by stub");
3591 case PACKET_SUPPORT_UNKNOWN
:
3592 if (store_register_using_P (regnum
))
3594 /* The stub recognized the 'P' packet. Remember this. */
3595 remote_protocol_P
.support
= PACKET_ENABLE
;
3600 /* The stub does not support the 'P' packet. Use 'G'
3601 instead, and don't try using 'P' in the future (it
3602 will just waste our time). */
3603 remote_protocol_P
.support
= PACKET_DISABLE
;
3609 /* Extract all the registers in the regcache copying them into a
3613 regs
= alloca (rs
->sizeof_g_packet
);
3614 memset (regs
, rs
->sizeof_g_packet
, 0);
3615 for (i
= 0; i
< NUM_REGS
+ NUM_PSEUDO_REGS
; i
++)
3617 struct packet_reg
*r
= &rs
->regs
[i
];
3619 regcache_collect (r
->regnum
, regs
+ r
->offset
);
3623 /* Command describes registers byte by byte,
3624 each byte encoded as two hex characters. */
3625 buf
= alloca (rs
->remote_packet_size
);
3628 /* remote_prepare_to_store insures that register_bytes_found gets set. */
3629 bin2hex (regs
, p
, register_bytes_found
);
3630 remote_send (buf
, (rs
->remote_packet_size
));
3634 /* Return the number of hex digits in num. */
3637 hexnumlen (ULONGEST num
)
3641 for (i
= 0; num
!= 0; i
++)
3647 /* Set BUF to the minimum number of hex digits representing NUM. */
3650 hexnumstr (char *buf
, ULONGEST num
)
3652 int len
= hexnumlen (num
);
3653 return hexnumnstr (buf
, num
, len
);
3657 /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */
3660 hexnumnstr (char *buf
, ULONGEST num
, int width
)
3666 for (i
= width
- 1; i
>= 0; i
--)
3668 buf
[i
] = "0123456789abcdef"[(num
& 0xf)];
3675 /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */
3678 remote_address_masked (CORE_ADDR addr
)
3680 if (remote_address_size
> 0
3681 && remote_address_size
< (sizeof (ULONGEST
) * 8))
3683 /* Only create a mask when that mask can safely be constructed
3684 in a ULONGEST variable. */
3686 mask
= (mask
<< remote_address_size
) - 1;
3692 /* Determine whether the remote target supports binary downloading.
3693 This is accomplished by sending a no-op memory write of zero length
3694 to the target at the specified address. It does not suffice to send
3695 the whole packet, since many stubs strip the eighth bit and subsequently
3696 compute a wrong checksum, which causes real havoc with remote_write_bytes.
3698 NOTE: This can still lose if the serial line is not eight-bit
3699 clean. In cases like this, the user should clear "remote
3703 check_binary_download (CORE_ADDR addr
)
3705 struct remote_state
*rs
= get_remote_state ();
3706 switch (remote_protocol_binary_download
.support
)
3708 case PACKET_DISABLE
:
3712 case PACKET_SUPPORT_UNKNOWN
:
3714 char *buf
= alloca (rs
->remote_packet_size
);
3719 p
+= hexnumstr (p
, (ULONGEST
) addr
);
3721 p
+= hexnumstr (p
, (ULONGEST
) 0);
3725 putpkt_binary (buf
, (int) (p
- buf
));
3726 getpkt (buf
, (rs
->remote_packet_size
), 0);
3731 fprintf_unfiltered (gdb_stdlog
,
3732 "binary downloading NOT suppported by target\n");
3733 remote_protocol_binary_download
.support
= PACKET_DISABLE
;
3738 fprintf_unfiltered (gdb_stdlog
,
3739 "binary downloading suppported by target\n");
3740 remote_protocol_binary_download
.support
= PACKET_ENABLE
;
3747 /* Write memory data directly to the remote machine.
3748 This does not inform the data cache; the data cache uses this.
3749 MEMADDR is the address in the remote memory space.
3750 MYADDR is the address of the buffer in our space.
3751 LEN is the number of bytes.
3753 Returns number of bytes transferred, or 0 (setting errno) for
3754 error. Only transfer a single packet. */
3757 remote_write_bytes (CORE_ADDR memaddr
, char *myaddr
, int len
)
3760 int max_buf_size
; /* Max size of packet output buffer */
3762 unsigned char *plen
;
3768 /* Verify that the target can support a binary download */
3769 check_binary_download (memaddr
);
3771 /* Determine the max packet size. */
3772 max_buf_size
= get_memory_write_packet_size ();
3773 sizeof_buf
= max_buf_size
+ 1; /* Space for trailing NUL */
3774 buf
= alloca (sizeof_buf
);
3776 /* Subtract header overhead from max payload size - $M<memaddr>,<len>:#nn */
3777 max_buf_size
-= 2 + hexnumlen (memaddr
+ len
- 1) + 1 + hexnumlen (len
) + 4;
3779 /* construct "M"<memaddr>","<len>":" */
3780 /* sprintf (buf, "M%lx,%x:", (unsigned long) memaddr, todo); */
3783 /* Append [XM]. Compute a best guess of the number of bytes
3784 actually transfered. */
3785 switch (remote_protocol_binary_download
.support
)
3789 /* Best guess at number of bytes that will fit. */
3790 todo
= min (len
, max_buf_size
);
3792 case PACKET_DISABLE
:
3794 /* num bytes that will fit */
3795 todo
= min (len
, max_buf_size
/ 2);
3797 case PACKET_SUPPORT_UNKNOWN
:
3798 internal_error (__FILE__
, __LINE__
,
3799 "remote_write_bytes: bad internal state");
3801 internal_error (__FILE__
, __LINE__
, "bad switch");
3804 /* Append <memaddr> */
3805 memaddr
= remote_address_masked (memaddr
);
3806 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
3809 /* Append <len>. Retain the location/size of <len>. It may
3810 need to be adjusted once the packet body has been created. */
3812 plenlen
= hexnumstr (p
, (ULONGEST
) todo
);
3817 /* Append the packet body. */
3818 switch (remote_protocol_binary_download
.support
)
3821 /* Binary mode. Send target system values byte by byte, in
3822 increasing byte addresses. Only escape certain critical
3825 (nr_bytes
< todo
) && (p
- buf
) < (max_buf_size
- 2);
3828 switch (myaddr
[nr_bytes
] & 0xff)
3833 /* These must be escaped */
3835 *p
++ = (myaddr
[nr_bytes
] & 0xff) ^ 0x20;
3838 *p
++ = myaddr
[nr_bytes
] & 0xff;
3842 if (nr_bytes
< todo
)
3844 /* Escape chars have filled up the buffer prematurely,
3845 and we have actually sent fewer bytes than planned.
3846 Fix-up the length field of the packet. Use the same
3847 number of characters as before. */
3849 plen
+= hexnumnstr (plen
, (ULONGEST
) nr_bytes
, plenlen
);
3850 *plen
= ':'; /* overwrite \0 from hexnumnstr() */
3853 case PACKET_DISABLE
:
3854 /* Normal mode: Send target system values byte by byte, in
3855 increasing byte addresses. Each byte is encoded as a two hex
3857 nr_bytes
= bin2hex (myaddr
, p
, todo
);
3860 case PACKET_SUPPORT_UNKNOWN
:
3861 internal_error (__FILE__
, __LINE__
,
3862 "remote_write_bytes: bad internal state");
3864 internal_error (__FILE__
, __LINE__
, "bad switch");
3867 putpkt_binary (buf
, (int) (p
- buf
));
3868 getpkt (buf
, sizeof_buf
, 0);
3872 /* There is no correspondance between what the remote protocol
3873 uses for errors and errno codes. We would like a cleaner way
3874 of representing errors (big enough to include errno codes,
3875 bfd_error codes, and others). But for now just return EIO. */
3880 /* Return NR_BYTES, not TODO, in case escape chars caused us to send fewer
3881 bytes than we'd planned. */
3885 /* Read memory data directly from the remote machine.
3886 This does not use the data cache; the data cache uses this.
3887 MEMADDR is the address in the remote memory space.
3888 MYADDR is the address of the buffer in our space.
3889 LEN is the number of bytes.
3891 Returns number of bytes transferred, or 0 for error. */
3893 /* NOTE: cagney/1999-10-18: This function (and its siblings in other
3894 remote targets) shouldn't attempt to read the entire buffer.
3895 Instead it should read a single packet worth of data and then
3896 return the byte size of that packet to the caller. The caller (its
3897 caller and its callers caller ;-) already contains code for
3898 handling partial reads. */
3901 remote_read_bytes (CORE_ADDR memaddr
, char *myaddr
, int len
)
3904 int max_buf_size
; /* Max size of packet output buffer */
3908 /* Create a buffer big enough for this packet. */
3909 max_buf_size
= get_memory_read_packet_size ();
3910 sizeof_buf
= max_buf_size
+ 1; /* Space for trailing NUL */
3911 buf
= alloca (sizeof_buf
);
3920 todo
= min (len
, max_buf_size
/ 2); /* num bytes that will fit */
3922 /* construct "m"<memaddr>","<len>" */
3923 /* sprintf (buf, "m%lx,%x", (unsigned long) memaddr, todo); */
3924 memaddr
= remote_address_masked (memaddr
);
3927 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
3929 p
+= hexnumstr (p
, (ULONGEST
) todo
);
3933 getpkt (buf
, sizeof_buf
, 0);
3936 && isxdigit (buf
[1]) && isxdigit (buf
[2])
3939 /* There is no correspondance between what the remote protocol uses
3940 for errors and errno codes. We would like a cleaner way of
3941 representing errors (big enough to include errno codes, bfd_error
3942 codes, and others). But for now just return EIO. */
3947 /* Reply describes memory byte by byte,
3948 each byte encoded as two hex characters. */
3951 if ((i
= hex2bin (p
, myaddr
, todo
)) < todo
)
3953 /* Reply is short. This means that we were able to read
3954 only part of what we wanted to. */
3955 return i
+ (origlen
- len
);
3964 /* Read or write LEN bytes from inferior memory at MEMADDR,
3965 transferring to or from debugger address BUFFER. Write to inferior if
3966 SHOULD_WRITE is nonzero. Returns length of data written or read; 0
3967 for error. TARGET is unused. */
3971 remote_xfer_memory (CORE_ADDR mem_addr
, char *buffer
, int mem_len
,
3972 int should_write
, struct mem_attrib
*attrib
,
3973 struct target_ops
*target
)
3975 CORE_ADDR targ_addr
;
3979 /* Should this be the selected frame? */
3980 gdbarch_remote_translate_xfer_address (current_gdbarch
, current_regcache
,
3982 &targ_addr
, &targ_len
);
3987 res
= remote_write_bytes (targ_addr
, buffer
, targ_len
);
3989 res
= remote_read_bytes (targ_addr
, buffer
, targ_len
);
3996 /* Enable after 4.12. */
3999 remote_search (int len
, char *data
, char *mask
, CORE_ADDR startaddr
,
4000 int increment
, CORE_ADDR lorange
, CORE_ADDR hirange
,
4001 CORE_ADDR
*addr_found
, char *data_found
)
4003 if (increment
== -4 && len
== 4)
4005 long mask_long
, data_long
;
4006 long data_found_long
;
4007 CORE_ADDR addr_we_found
;
4008 char *buf
= alloca (rs
->remote_packet_size
);
4009 long returned_long
[2];
4012 mask_long
= extract_unsigned_integer (mask
, len
);
4013 data_long
= extract_unsigned_integer (data
, len
);
4014 sprintf (buf
, "t%x:%x,%x", startaddr
, data_long
, mask_long
);
4016 getpkt (buf
, (rs
->remote_packet_size
), 0);
4019 /* The stub doesn't support the 't' request. We might want to
4020 remember this fact, but on the other hand the stub could be
4021 switched on us. Maybe we should remember it only until
4022 the next "target remote". */
4023 generic_search (len
, data
, mask
, startaddr
, increment
, lorange
,
4024 hirange
, addr_found
, data_found
);
4029 /* There is no correspondance between what the remote protocol uses
4030 for errors and errno codes. We would like a cleaner way of
4031 representing errors (big enough to include errno codes, bfd_error
4032 codes, and others). But for now just use EIO. */
4033 memory_error (EIO
, startaddr
);
4036 while (*p
!= '\0' && *p
!= ',')
4037 addr_we_found
= (addr_we_found
<< 4) + fromhex (*p
++);
4039 error ("Protocol error: short return for search");
4041 data_found_long
= 0;
4042 while (*p
!= '\0' && *p
!= ',')
4043 data_found_long
= (data_found_long
<< 4) + fromhex (*p
++);
4044 /* Ignore anything after this comma, for future extensions. */
4046 if (addr_we_found
< lorange
|| addr_we_found
>= hirange
)
4052 *addr_found
= addr_we_found
;
4053 *data_found
= store_unsigned_integer (data_we_found
, len
);
4056 generic_search (len
, data
, mask
, startaddr
, increment
, lorange
,
4057 hirange
, addr_found
, data_found
);
4062 remote_files_info (struct target_ops
*ignore
)
4064 puts_filtered ("Debugging a target over a serial line.\n");
4067 /* Stuff for dealing with the packets which are part of this protocol.
4068 See comment at top of file for details. */
4070 /* Read a single character from the remote end, masking it down to 7 bits. */
4073 readchar (int timeout
)
4077 ch
= serial_readchar (remote_desc
, timeout
);
4082 switch ((enum serial_rc
) ch
)
4085 target_mourn_inferior ();
4086 error ("Remote connection closed");
4089 perror_with_name ("Remote communication error");
4091 case SERIAL_TIMEOUT
:
4097 /* Send the command in BUF to the remote machine, and read the reply
4098 into BUF. Report an error if we get an error reply. */
4101 remote_send (char *buf
,
4105 getpkt (buf
, sizeof_buf
, 0);
4108 error ("Remote failure reply: %s", buf
);
4111 /* Display a null-terminated packet on stdout, for debugging, using C
4115 print_packet (char *buf
)
4117 puts_filtered ("\"");
4118 fputstr_filtered (buf
, '"', gdb_stdout
);
4119 puts_filtered ("\"");
4125 return putpkt_binary (buf
, strlen (buf
));
4128 /* Send a packet to the remote machine, with error checking. The data
4129 of the packet is in BUF. The string in BUF can be at most (rs->remote_packet_size) - 5
4130 to account for the $, # and checksum, and for a possible /0 if we are
4131 debugging (remote_debug) and want to print the sent packet as a string */
4134 putpkt_binary (char *buf
, int cnt
)
4136 struct remote_state
*rs
= get_remote_state ();
4138 unsigned char csum
= 0;
4139 char *buf2
= alloca (cnt
+ 6);
4140 long sizeof_junkbuf
= (rs
->remote_packet_size
);
4141 char *junkbuf
= alloca (sizeof_junkbuf
);
4147 /* Copy the packet into buffer BUF2, encapsulating it
4148 and giving it a checksum. */
4153 for (i
= 0; i
< cnt
; i
++)
4159 *p
++ = tohex ((csum
>> 4) & 0xf);
4160 *p
++ = tohex (csum
& 0xf);
4162 /* Send it over and over until we get a positive ack. */
4166 int started_error_output
= 0;
4171 fprintf_unfiltered (gdb_stdlog
, "Sending packet: ");
4172 fputstrn_unfiltered (buf2
, p
- buf2
, 0, gdb_stdlog
);
4173 fprintf_unfiltered (gdb_stdlog
, "...");
4174 gdb_flush (gdb_stdlog
);
4176 if (serial_write (remote_desc
, buf2
, p
- buf2
))
4177 perror_with_name ("putpkt: write failed");
4179 /* read until either a timeout occurs (-2) or '+' is read */
4182 ch
= readchar (remote_timeout
);
4190 case SERIAL_TIMEOUT
:
4192 if (started_error_output
)
4194 putchar_unfiltered ('\n');
4195 started_error_output
= 0;
4204 fprintf_unfiltered (gdb_stdlog
, "Ack\n");
4208 fprintf_unfiltered (gdb_stdlog
, "Nak\n");
4209 case SERIAL_TIMEOUT
:
4213 break; /* Retransmit buffer */
4217 fprintf_unfiltered (gdb_stdlog
, "Packet instead of Ack, ignoring it\n");
4218 /* It's probably an old response, and we're out of sync.
4219 Just gobble up the packet and ignore it. */
4220 read_frame (junkbuf
, sizeof_junkbuf
);
4221 continue; /* Now, go look for + */
4226 if (!started_error_output
)
4228 started_error_output
= 1;
4229 fprintf_unfiltered (gdb_stdlog
, "putpkt: Junk: ");
4231 fputc_unfiltered (ch
& 0177, gdb_stdlog
);
4235 break; /* Here to retransmit */
4239 /* This is wrong. If doing a long backtrace, the user should be
4240 able to get out next time we call QUIT, without anything as
4241 violent as interrupt_query. If we want to provide a way out of
4242 here without getting to the next QUIT, it should be based on
4243 hitting ^C twice as in remote_wait. */
4253 static int remote_cisco_mode
;
4255 /* Come here after finding the start of the frame. Collect the rest
4256 into BUF, verifying the checksum, length, and handling run-length
4257 compression. No more than sizeof_buf-1 characters are read so that
4258 the buffer can be NUL terminated.
4260 Returns -1 on error, number of characters in buffer (ignoring the
4261 trailing NULL) on success. (could be extended to return one of the
4262 SERIAL status indications). */
4265 read_frame (char *buf
,
4277 /* ASSERT (bc < sizeof_buf - 1) - space for trailing NUL */
4278 c
= readchar (remote_timeout
);
4281 case SERIAL_TIMEOUT
:
4283 fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog
);
4287 fputs_filtered ("Saw new packet start in middle of old one\n",
4289 return -1; /* Start a new packet, count retries */
4292 unsigned char pktcsum
;
4298 check_0
= readchar (remote_timeout
);
4300 check_1
= readchar (remote_timeout
);
4302 if (check_0
== SERIAL_TIMEOUT
|| check_1
== SERIAL_TIMEOUT
)
4305 fputs_filtered ("Timeout in checksum, retrying\n", gdb_stdlog
);
4308 else if (check_0
< 0 || check_1
< 0)
4311 fputs_filtered ("Communication error in checksum\n", gdb_stdlog
);
4315 pktcsum
= (fromhex (check_0
) << 4) | fromhex (check_1
);
4316 if (csum
== pktcsum
)
4321 fprintf_filtered (gdb_stdlog
,
4322 "Bad checksum, sentsum=0x%x, csum=0x%x, buf=",
4324 fputs_filtered (buf
, gdb_stdlog
);
4325 fputs_filtered ("\n", gdb_stdlog
);
4327 /* Number of characters in buffer ignoring trailing
4331 case '*': /* Run length encoding */
4336 if (remote_cisco_mode
== 0)
4338 c
= readchar (remote_timeout
);
4340 repeat
= c
- ' ' + 3; /* Compute repeat count */
4344 /* Cisco's run-length encoding variant uses two
4345 hex chars to represent the repeat count. */
4347 c
= readchar (remote_timeout
);
4349 repeat
= fromhex (c
) << 4;
4350 c
= readchar (remote_timeout
);
4352 repeat
+= fromhex (c
);
4355 /* The character before ``*'' is repeated. */
4357 if (repeat
> 0 && repeat
<= 255
4359 && bc
+ repeat
- 1 < sizeof_buf
- 1)
4361 memset (&buf
[bc
], buf
[bc
- 1], repeat
);
4367 printf_filtered ("Repeat count %d too large for buffer: ", repeat
);
4368 puts_filtered (buf
);
4369 puts_filtered ("\n");
4373 if (bc
< sizeof_buf
- 1)
4381 puts_filtered ("Remote packet too long: ");
4382 puts_filtered (buf
);
4383 puts_filtered ("\n");
4390 /* Read a packet from the remote machine, with error checking, and
4391 store it in BUF. If FOREVER, wait forever rather than timing out;
4392 this is used (in synchronous mode) to wait for a target that is is
4393 executing user code to stop. */
4394 /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we
4395 don't have to change all the calls to getpkt to deal with the
4396 return value, because at the moment I don't know what the right
4397 thing to do it for those. */
4405 timed_out
= getpkt_sane (buf
, sizeof_buf
, forever
);
4409 /* Read a packet from the remote machine, with error checking, and
4410 store it in BUF. If FOREVER, wait forever rather than timing out;
4411 this is used (in synchronous mode) to wait for a target that is is
4412 executing user code to stop. If FOREVER == 0, this function is
4413 allowed to time out gracefully and return an indication of this to
4416 getpkt_sane (char *buf
,
4425 strcpy (buf
, "timeout");
4429 timeout
= watchdog
> 0 ? watchdog
: -1;
4433 timeout
= remote_timeout
;
4437 for (tries
= 1; tries
<= MAX_TRIES
; tries
++)
4439 /* This can loop forever if the remote side sends us characters
4440 continuously, but if it pauses, we'll get a zero from readchar
4441 because of timeout. Then we'll count that as a retry. */
4443 /* Note that we will only wait forever prior to the start of a packet.
4444 After that, we expect characters to arrive at a brisk pace. They
4445 should show up within remote_timeout intervals. */
4449 c
= readchar (timeout
);
4451 if (c
== SERIAL_TIMEOUT
)
4453 if (forever
) /* Watchdog went off? Kill the target. */
4456 target_mourn_inferior ();
4457 error ("Watchdog has expired. Target detached.\n");
4460 fputs_filtered ("Timed out.\n", gdb_stdlog
);
4466 /* We've found the start of a packet, now collect the data. */
4468 val
= read_frame (buf
, sizeof_buf
);
4474 fprintf_unfiltered (gdb_stdlog
, "Packet received: ");
4475 fputstr_unfiltered (buf
, 0, gdb_stdlog
);
4476 fprintf_unfiltered (gdb_stdlog
, "\n");
4478 serial_write (remote_desc
, "+", 1);
4482 /* Try the whole thing again. */
4484 serial_write (remote_desc
, "-", 1);
4487 /* We have tried hard enough, and just can't receive the packet. Give up. */
4489 printf_unfiltered ("Ignoring packet error, continuing...\n");
4490 serial_write (remote_desc
, "+", 1);
4497 /* For some mysterious reason, wait_for_inferior calls kill instead of
4498 mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */
4502 target_mourn_inferior ();
4506 /* Use catch_errors so the user can quit from gdb even when we aren't on
4507 speaking terms with the remote system. */
4508 catch_errors ((catch_errors_ftype
*) putpkt
, "k", "", RETURN_MASK_ERROR
);
4510 /* Don't wait for it to die. I'm not really sure it matters whether
4511 we do or not. For the existing stubs, kill is a noop. */
4512 target_mourn_inferior ();
4515 /* Async version of remote_kill. */
4517 remote_async_kill (void)
4519 /* Unregister the file descriptor from the event loop. */
4520 if (target_is_async_p ())
4521 serial_async (remote_desc
, NULL
, 0);
4523 /* For some mysterious reason, wait_for_inferior calls kill instead of
4524 mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */
4528 target_mourn_inferior ();
4532 /* Use catch_errors so the user can quit from gdb even when we aren't on
4533 speaking terms with the remote system. */
4534 catch_errors ((catch_errors_ftype
*) putpkt
, "k", "", RETURN_MASK_ERROR
);
4536 /* Don't wait for it to die. I'm not really sure it matters whether
4537 we do or not. For the existing stubs, kill is a noop. */
4538 target_mourn_inferior ();
4544 remote_mourn_1 (&remote_ops
);
4548 remote_async_mourn (void)
4550 remote_mourn_1 (&remote_async_ops
);
4554 extended_remote_mourn (void)
4556 /* We do _not_ want to mourn the target like this; this will
4557 remove the extended remote target from the target stack,
4558 and the next time the user says "run" it'll fail.
4560 FIXME: What is the right thing to do here? */
4562 remote_mourn_1 (&extended_remote_ops
);
4566 /* Worker function for remote_mourn. */
4568 remote_mourn_1 (struct target_ops
*target
)
4570 unpush_target (target
);
4571 generic_mourn_inferior ();
4574 /* In the extended protocol we want to be able to do things like
4575 "run" and have them basically work as expected. So we need
4576 a special create_inferior function.
4578 FIXME: One day add support for changing the exec file
4579 we're debugging, arguments and an environment. */
4582 extended_remote_create_inferior (char *exec_file
, char *args
, char **env
)
4584 /* Rip out the breakpoints; we'll reinsert them after restarting
4585 the remote server. */
4586 remove_breakpoints ();
4588 /* Now restart the remote server. */
4589 extended_remote_restart ();
4591 /* Now put the breakpoints back in. This way we're safe if the
4592 restart function works via a unix fork on the remote side. */
4593 insert_breakpoints ();
4595 /* Clean up from the last time we were running. */
4596 clear_proceed_status ();
4598 /* Let the remote process run. */
4599 proceed (-1, TARGET_SIGNAL_0
, 0);
4602 /* Async version of extended_remote_create_inferior. */
4604 extended_remote_async_create_inferior (char *exec_file
, char *args
, char **env
)
4606 /* Rip out the breakpoints; we'll reinsert them after restarting
4607 the remote server. */
4608 remove_breakpoints ();
4610 /* If running asynchronously, register the target file descriptor
4611 with the event loop. */
4612 if (event_loop_p
&& target_can_async_p ())
4613 target_async (inferior_event_handler
, 0);
4615 /* Now restart the remote server. */
4616 extended_remote_restart ();
4618 /* Now put the breakpoints back in. This way we're safe if the
4619 restart function works via a unix fork on the remote side. */
4620 insert_breakpoints ();
4622 /* Clean up from the last time we were running. */
4623 clear_proceed_status ();
4625 /* Let the remote process run. */
4626 proceed (-1, TARGET_SIGNAL_0
, 0);
4630 /* On some machines, e.g. 68k, we may use a different breakpoint
4631 instruction than other targets; in those use
4632 DEPRECATED_REMOTE_BREAKPOINT instead of just BREAKPOINT_FROM_PC.
4633 Also, bi-endian targets may define
4634 DEPRECATED_LITTLE_REMOTE_BREAKPOINT and
4635 DEPRECATED_BIG_REMOTE_BREAKPOINT. If none of these are defined, we
4636 just call the standard routines that are in mem-break.c. */
4638 /* NOTE: cagney/2003-06-08: This is silly. A remote and simulator
4639 target should use an identical BREAKPOINT_FROM_PC. As for native,
4640 the ARCH-OS-tdep.c code can override the default. */
4642 #if defined (DEPRECATED_LITTLE_REMOTE_BREAKPOINT) && defined (DEPRECATED_BIG_REMOTE_BREAKPOINT) && !defined(DEPRECATED_REMOTE_BREAKPOINT)
4643 #define DEPRECATED_REMOTE_BREAKPOINT
4646 #ifdef DEPRECATED_REMOTE_BREAKPOINT
4648 /* If the target isn't bi-endian, just pretend it is. */
4649 #if !defined (DEPRECATED_LITTLE_REMOTE_BREAKPOINT) && !defined (DEPRECATED_BIG_REMOTE_BREAKPOINT)
4650 #define DEPRECATED_LITTLE_REMOTE_BREAKPOINT DEPRECATED_REMOTE_BREAKPOINT
4651 #define DEPRECATED_BIG_REMOTE_BREAKPOINT DEPRECATED_REMOTE_BREAKPOINT
4654 static unsigned char big_break_insn
[] = DEPRECATED_BIG_REMOTE_BREAKPOINT
;
4655 static unsigned char little_break_insn
[] = DEPRECATED_LITTLE_REMOTE_BREAKPOINT
;
4657 #endif /* DEPRECATED_REMOTE_BREAKPOINT */
4659 /* Insert a breakpoint on targets that don't have any better
4660 breakpoint support. We read the contents of the target location
4661 and stash it, then overwrite it with a breakpoint instruction.
4662 ADDR is the target location in the target machine. CONTENTS_CACHE
4663 is a pointer to memory allocated for saving the target contents.
4664 It is guaranteed by the caller to be long enough to save the number
4665 of bytes returned by BREAKPOINT_FROM_PC. */
4668 remote_insert_breakpoint (CORE_ADDR addr
, char *contents_cache
)
4670 struct remote_state
*rs
= get_remote_state ();
4671 #ifdef DEPRECATED_REMOTE_BREAKPOINT
4676 /* Try the "Z" s/w breakpoint packet if it is not already disabled.
4677 If it succeeds, then set the support to PACKET_ENABLE. If it
4678 fails, and the user has explicitly requested the Z support then
4679 report an error, otherwise, mark it disabled and go on. */
4681 if (remote_protocol_Z
[Z_PACKET_SOFTWARE_BP
].support
!= PACKET_DISABLE
)
4683 char *buf
= alloca (rs
->remote_packet_size
);
4686 addr
= remote_address_masked (addr
);
4690 p
+= hexnumstr (p
, (ULONGEST
) addr
);
4691 BREAKPOINT_FROM_PC (&addr
, &bp_size
);
4692 sprintf (p
, ",%d", bp_size
);
4695 getpkt (buf
, (rs
->remote_packet_size
), 0);
4697 switch (packet_ok (buf
, &remote_protocol_Z
[Z_PACKET_SOFTWARE_BP
]))
4703 case PACKET_UNKNOWN
:
4708 #ifdef DEPRECATED_REMOTE_BREAKPOINT
4709 val
= target_read_memory (addr
, contents_cache
, sizeof big_break_insn
);
4713 if (TARGET_BYTE_ORDER
== BFD_ENDIAN_BIG
)
4714 val
= target_write_memory (addr
, (char *) big_break_insn
,
4715 sizeof big_break_insn
);
4717 val
= target_write_memory (addr
, (char *) little_break_insn
,
4718 sizeof little_break_insn
);
4723 return memory_insert_breakpoint (addr
, contents_cache
);
4724 #endif /* DEPRECATED_REMOTE_BREAKPOINT */
4728 remote_remove_breakpoint (CORE_ADDR addr
, char *contents_cache
)
4730 struct remote_state
*rs
= get_remote_state ();
4733 if (remote_protocol_Z
[Z_PACKET_SOFTWARE_BP
].support
!= PACKET_DISABLE
)
4735 char *buf
= alloca (rs
->remote_packet_size
);
4742 addr
= remote_address_masked (addr
);
4743 p
+= hexnumstr (p
, (ULONGEST
) addr
);
4744 BREAKPOINT_FROM_PC (&addr
, &bp_size
);
4745 sprintf (p
, ",%d", bp_size
);
4748 getpkt (buf
, (rs
->remote_packet_size
), 0);
4750 return (buf
[0] == 'E');
4753 #ifdef DEPRECATED_REMOTE_BREAKPOINT
4754 return target_write_memory (addr
, contents_cache
, sizeof big_break_insn
);
4756 return memory_remove_breakpoint (addr
, contents_cache
);
4757 #endif /* DEPRECATED_REMOTE_BREAKPOINT */
4761 watchpoint_to_Z_packet (int type
)
4775 internal_error (__FILE__
, __LINE__
,
4776 "hw_bp_to_z: bad watchpoint type %d", type
);
4781 remote_insert_watchpoint (CORE_ADDR addr
, int len
, int type
)
4783 struct remote_state
*rs
= get_remote_state ();
4784 char *buf
= alloca (rs
->remote_packet_size
);
4786 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
4788 if (remote_protocol_Z
[packet
].support
== PACKET_DISABLE
)
4789 error ("Can't set hardware watchpoints without the '%s' (%s) packet\n",
4790 remote_protocol_Z
[packet
].name
,
4791 remote_protocol_Z
[packet
].title
);
4793 sprintf (buf
, "Z%x,", packet
);
4794 p
= strchr (buf
, '\0');
4795 addr
= remote_address_masked (addr
);
4796 p
+= hexnumstr (p
, (ULONGEST
) addr
);
4797 sprintf (p
, ",%x", len
);
4800 getpkt (buf
, (rs
->remote_packet_size
), 0);
4802 switch (packet_ok (buf
, &remote_protocol_Z
[packet
]))
4805 case PACKET_UNKNOWN
:
4810 internal_error (__FILE__
, __LINE__
,
4811 "remote_insert_watchpoint: reached end of function");
4816 remote_remove_watchpoint (CORE_ADDR addr
, int len
, int type
)
4818 struct remote_state
*rs
= get_remote_state ();
4819 char *buf
= alloca (rs
->remote_packet_size
);
4821 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
4823 if (remote_protocol_Z
[packet
].support
== PACKET_DISABLE
)
4824 error ("Can't clear hardware watchpoints without the '%s' (%s) packet\n",
4825 remote_protocol_Z
[packet
].name
,
4826 remote_protocol_Z
[packet
].title
);
4828 sprintf (buf
, "z%x,", packet
);
4829 p
= strchr (buf
, '\0');
4830 addr
= remote_address_masked (addr
);
4831 p
+= hexnumstr (p
, (ULONGEST
) addr
);
4832 sprintf (p
, ",%x", len
);
4834 getpkt (buf
, (rs
->remote_packet_size
), 0);
4836 switch (packet_ok (buf
, &remote_protocol_Z
[packet
]))
4839 case PACKET_UNKNOWN
:
4844 internal_error (__FILE__
, __LINE__
,
4845 "remote_remove_watchpoint: reached end of function");
4849 int remote_hw_watchpoint_limit
= -1;
4850 int remote_hw_breakpoint_limit
= -1;
4853 remote_check_watch_resources (int type
, int cnt
, int ot
)
4855 if (type
== bp_hardware_breakpoint
)
4857 if (remote_hw_breakpoint_limit
== 0)
4859 else if (remote_hw_breakpoint_limit
< 0)
4861 else if (cnt
<= remote_hw_breakpoint_limit
)
4866 if (remote_hw_watchpoint_limit
== 0)
4868 else if (remote_hw_watchpoint_limit
< 0)
4872 else if (cnt
<= remote_hw_watchpoint_limit
)
4879 remote_stopped_by_watchpoint (void)
4881 return remote_stopped_by_watchpoint_p
;
4885 remote_stopped_data_address (void)
4887 if (remote_stopped_by_watchpoint ())
4888 return remote_watch_data_address
;
4889 return (CORE_ADDR
)0;
4894 remote_insert_hw_breakpoint (CORE_ADDR addr
, char *shadow
)
4897 struct remote_state
*rs
= get_remote_state ();
4898 char *buf
= alloca (rs
->remote_packet_size
);
4901 /* The length field should be set to the size of a breakpoint
4904 BREAKPOINT_FROM_PC (&addr
, &len
);
4906 if (remote_protocol_Z
[Z_PACKET_HARDWARE_BP
].support
== PACKET_DISABLE
)
4907 error ("Can't set hardware breakpoint without the '%s' (%s) packet\n",
4908 remote_protocol_Z
[Z_PACKET_HARDWARE_BP
].name
,
4909 remote_protocol_Z
[Z_PACKET_HARDWARE_BP
].title
);
4915 addr
= remote_address_masked (addr
);
4916 p
+= hexnumstr (p
, (ULONGEST
) addr
);
4917 sprintf (p
, ",%x", len
);
4920 getpkt (buf
, (rs
->remote_packet_size
), 0);
4922 switch (packet_ok (buf
, &remote_protocol_Z
[Z_PACKET_HARDWARE_BP
]))
4925 case PACKET_UNKNOWN
:
4930 internal_error (__FILE__
, __LINE__
,
4931 "remote_insert_hw_breakpoint: reached end of function");
4936 remote_remove_hw_breakpoint (CORE_ADDR addr
, char *shadow
)
4939 struct remote_state
*rs
= get_remote_state ();
4940 char *buf
= alloca (rs
->remote_packet_size
);
4943 /* The length field should be set to the size of a breakpoint
4946 BREAKPOINT_FROM_PC (&addr
, &len
);
4948 if (remote_protocol_Z
[Z_PACKET_HARDWARE_BP
].support
== PACKET_DISABLE
)
4949 error ("Can't clear hardware breakpoint without the '%s' (%s) packet\n",
4950 remote_protocol_Z
[Z_PACKET_HARDWARE_BP
].name
,
4951 remote_protocol_Z
[Z_PACKET_HARDWARE_BP
].title
);
4957 addr
= remote_address_masked (addr
);
4958 p
+= hexnumstr (p
, (ULONGEST
) addr
);
4959 sprintf (p
, ",%x", len
);
4962 getpkt (buf
, (rs
->remote_packet_size
), 0);
4964 switch (packet_ok (buf
, &remote_protocol_Z
[Z_PACKET_HARDWARE_BP
]))
4967 case PACKET_UNKNOWN
:
4972 internal_error (__FILE__
, __LINE__
,
4973 "remote_remove_hw_breakpoint: reached end of function");
4976 /* Some targets are only capable of doing downloads, and afterwards
4977 they switch to the remote serial protocol. This function provides
4978 a clean way to get from the download target to the remote target.
4979 It's basically just a wrapper so that we don't have to expose any
4980 of the internal workings of remote.c.
4982 Prior to calling this routine, you should shutdown the current
4983 target code, else you will get the "A program is being debugged
4984 already..." message. Usually a call to pop_target() suffices. */
4987 push_remote_target (char *name
, int from_tty
)
4989 printf_filtered ("Switching to remote protocol\n");
4990 remote_open (name
, from_tty
);
4993 /* Table used by the crc32 function to calcuate the checksum. */
4995 static unsigned long crc32_table
[256] =
4998 static unsigned long
4999 crc32 (unsigned char *buf
, int len
, unsigned int crc
)
5001 if (!crc32_table
[1])
5003 /* Initialize the CRC table and the decoding table. */
5007 for (i
= 0; i
< 256; i
++)
5009 for (c
= i
<< 24, j
= 8; j
> 0; --j
)
5010 c
= c
& 0x80000000 ? (c
<< 1) ^ 0x04c11db7 : (c
<< 1);
5017 crc
= (crc
<< 8) ^ crc32_table
[((crc
>> 24) ^ *buf
) & 255];
5023 /* compare-sections command
5025 With no arguments, compares each loadable section in the exec bfd
5026 with the same memory range on the target, and reports mismatches.
5027 Useful for verifying the image on the target against the exec file.
5028 Depends on the target understanding the new "qCRC:" request. */
5030 /* FIXME: cagney/1999-10-26: This command should be broken down into a
5031 target method (target verify memory) and generic version of the
5032 actual command. This will allow other high-level code (especially
5033 generic_load()) to make use of this target functionality. */
5036 compare_sections_command (char *args
, int from_tty
)
5038 struct remote_state
*rs
= get_remote_state ();
5040 unsigned long host_crc
, target_crc
;
5041 extern bfd
*exec_bfd
;
5042 struct cleanup
*old_chain
;
5045 const char *sectname
;
5046 char *buf
= alloca (rs
->remote_packet_size
);
5053 error ("command cannot be used without an exec file");
5054 if (!current_target
.to_shortname
||
5055 strcmp (current_target
.to_shortname
, "remote") != 0)
5056 error ("command can only be used with remote target");
5058 for (s
= exec_bfd
->sections
; s
; s
= s
->next
)
5060 if (!(s
->flags
& SEC_LOAD
))
5061 continue; /* skip non-loadable section */
5063 size
= bfd_get_section_size_before_reloc (s
);
5065 continue; /* skip zero-length section */
5067 sectname
= bfd_get_section_name (exec_bfd
, s
);
5068 if (args
&& strcmp (args
, sectname
) != 0)
5069 continue; /* not the section selected by user */
5071 matched
= 1; /* do this section */
5073 /* FIXME: assumes lma can fit into long */
5074 sprintf (buf
, "qCRC:%lx,%lx", (long) lma
, (long) size
);
5077 /* be clever; compute the host_crc before waiting for target reply */
5078 sectdata
= xmalloc (size
);
5079 old_chain
= make_cleanup (xfree
, sectdata
);
5080 bfd_get_section_contents (exec_bfd
, s
, sectdata
, 0, size
);
5081 host_crc
= crc32 ((unsigned char *) sectdata
, size
, 0xffffffff);
5083 getpkt (buf
, (rs
->remote_packet_size
), 0);
5085 error ("target memory fault, section %s, range 0x%s -- 0x%s",
5086 sectname
, paddr (lma
), paddr (lma
+ size
));
5088 error ("remote target does not support this operation");
5090 for (target_crc
= 0, tmp
= &buf
[1]; *tmp
; tmp
++)
5091 target_crc
= target_crc
* 16 + fromhex (*tmp
);
5093 printf_filtered ("Section %s, range 0x%s -- 0x%s: ",
5094 sectname
, paddr (lma
), paddr (lma
+ size
));
5095 if (host_crc
== target_crc
)
5096 printf_filtered ("matched.\n");
5099 printf_filtered ("MIS-MATCHED!\n");
5103 do_cleanups (old_chain
);
5106 warning ("One or more sections of the remote executable does not match\n\
5107 the loaded file\n");
5108 if (args
&& !matched
)
5109 printf_filtered ("No loaded section named '%s'.\n", args
);
5113 remote_query (int query_type
, char *buf
, char *outbuf
, int *bufsiz
)
5115 struct remote_state
*rs
= get_remote_state ();
5117 char *buf2
= alloca (rs
->remote_packet_size
);
5118 char *p2
= &buf2
[0];
5121 error ("null pointer to remote bufer size specified");
5123 /* minimum outbuf size is (rs->remote_packet_size) - if bufsiz is not large enough let
5124 the caller know and return what the minimum size is */
5125 /* Note: a zero bufsiz can be used to query the minimum buffer size */
5126 if (*bufsiz
< (rs
->remote_packet_size
))
5128 *bufsiz
= (rs
->remote_packet_size
);
5132 /* except for querying the minimum buffer size, target must be open */
5134 error ("remote query is only available after target open");
5136 /* we only take uppercase letters as query types, at least for now */
5137 if ((query_type
< 'A') || (query_type
> 'Z'))
5138 error ("invalid remote query type");
5141 error ("null remote query specified");
5144 error ("remote query requires a buffer to receive data");
5151 /* we used one buffer char for the remote protocol q command and another
5152 for the query type. As the remote protocol encapsulation uses 4 chars
5153 plus one extra in case we are debugging (remote_debug),
5154 we have PBUFZIZ - 7 left to pack the query string */
5156 while (buf
[i
] && (i
< ((rs
->remote_packet_size
) - 8)))
5158 /* bad caller may have sent forbidden characters */
5159 if ((!isprint (buf
[i
])) || (buf
[i
] == '$') || (buf
[i
] == '#'))
5160 error ("illegal characters in query string");
5168 error ("query larger than available buffer");
5174 getpkt (outbuf
, *bufsiz
, 0);
5180 remote_rcmd (char *command
,
5181 struct ui_file
*outbuf
)
5183 struct remote_state
*rs
= get_remote_state ();
5185 char *buf
= alloca (rs
->remote_packet_size
);
5189 error ("remote rcmd is only available after target open");
5191 /* Send a NULL command across as an empty command */
5192 if (command
== NULL
)
5195 /* The query prefix */
5196 strcpy (buf
, "qRcmd,");
5197 p
= strchr (buf
, '\0');
5199 if ((strlen (buf
) + strlen (command
) * 2 + 8/*misc*/) > (rs
->remote_packet_size
))
5200 error ("\"monitor\" command ``%s'' is too long\n", command
);
5202 /* Encode the actual command */
5203 bin2hex (command
, p
, 0);
5205 if (putpkt (buf
) < 0)
5206 error ("Communication problem with target\n");
5208 /* get/display the response */
5211 /* XXX - see also tracepoint.c:remote_get_noisy_reply() */
5213 getpkt (buf
, (rs
->remote_packet_size
), 0);
5215 error ("Target does not support this command\n");
5216 if (buf
[0] == 'O' && buf
[1] != 'K')
5218 remote_console_output (buf
+ 1); /* 'O' message from stub */
5221 if (strcmp (buf
, "OK") == 0)
5223 if (strlen (buf
) == 3 && buf
[0] == 'E'
5224 && isdigit (buf
[1]) && isdigit (buf
[2]))
5226 error ("Protocol error with Rcmd");
5228 for (p
= buf
; p
[0] != '\0' && p
[1] != '\0'; p
+= 2)
5230 char c
= (fromhex (p
[0]) << 4) + fromhex (p
[1]);
5231 fputc_unfiltered (c
, outbuf
);
5238 packet_command (char *args
, int from_tty
)
5240 struct remote_state
*rs
= get_remote_state ();
5241 char *buf
= alloca (rs
->remote_packet_size
);
5244 error ("command can only be used with remote target");
5247 error ("remote-packet command requires packet text as argument");
5249 puts_filtered ("sending: ");
5250 print_packet (args
);
5251 puts_filtered ("\n");
5254 getpkt (buf
, (rs
->remote_packet_size
), 0);
5255 puts_filtered ("received: ");
5257 puts_filtered ("\n");
5261 /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------------- */
5263 static void display_thread_info (struct gdb_ext_thread_info
*info
);
5265 static void threadset_test_cmd (char *cmd
, int tty
);
5267 static void threadalive_test (char *cmd
, int tty
);
5269 static void threadlist_test_cmd (char *cmd
, int tty
);
5271 int get_and_display_threadinfo (threadref
* ref
);
5273 static void threadinfo_test_cmd (char *cmd
, int tty
);
5275 static int thread_display_step (threadref
* ref
, void *context
);
5277 static void threadlist_update_test_cmd (char *cmd
, int tty
);
5279 static void init_remote_threadtests (void);
5281 #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid */
5284 threadset_test_cmd (char *cmd
, int tty
)
5286 int sample_thread
= SAMPLE_THREAD
;
5288 printf_filtered ("Remote threadset test\n");
5289 set_thread (sample_thread
, 1);
5294 threadalive_test (char *cmd
, int tty
)
5296 int sample_thread
= SAMPLE_THREAD
;
5298 if (remote_thread_alive (pid_to_ptid (sample_thread
)))
5299 printf_filtered ("PASS: Thread alive test\n");
5301 printf_filtered ("FAIL: Thread alive test\n");
5304 void output_threadid (char *title
, threadref
* ref
);
5307 output_threadid (char *title
, threadref
*ref
)
5311 pack_threadid (&hexid
[0], ref
); /* Convert threead id into hex */
5313 printf_filtered ("%s %s\n", title
, (&hexid
[0]));
5317 threadlist_test_cmd (char *cmd
, int tty
)
5320 threadref nextthread
;
5321 int done
, result_count
;
5322 threadref threadlist
[3];
5324 printf_filtered ("Remote Threadlist test\n");
5325 if (!remote_get_threadlist (startflag
, &nextthread
, 3, &done
,
5326 &result_count
, &threadlist
[0]))
5327 printf_filtered ("FAIL: threadlist test\n");
5330 threadref
*scan
= threadlist
;
5331 threadref
*limit
= scan
+ result_count
;
5333 while (scan
< limit
)
5334 output_threadid (" thread ", scan
++);
5339 display_thread_info (struct gdb_ext_thread_info
*info
)
5341 output_threadid ("Threadid: ", &info
->threadid
);
5342 printf_filtered ("Name: %s\n ", info
->shortname
);
5343 printf_filtered ("State: %s\n", info
->display
);
5344 printf_filtered ("other: %s\n\n", info
->more_display
);
5348 get_and_display_threadinfo (threadref
*ref
)
5352 struct gdb_ext_thread_info threadinfo
;
5354 set
= TAG_THREADID
| TAG_EXISTS
| TAG_THREADNAME
5355 | TAG_MOREDISPLAY
| TAG_DISPLAY
;
5356 if (0 != (result
= remote_get_threadinfo (ref
, set
, &threadinfo
)))
5357 display_thread_info (&threadinfo
);
5362 threadinfo_test_cmd (char *cmd
, int tty
)
5364 int athread
= SAMPLE_THREAD
;
5368 int_to_threadref (&thread
, athread
);
5369 printf_filtered ("Remote Threadinfo test\n");
5370 if (!get_and_display_threadinfo (&thread
))
5371 printf_filtered ("FAIL cannot get thread info\n");
5375 thread_display_step (threadref
*ref
, void *context
)
5377 /* output_threadid(" threadstep ",ref); *//* simple test */
5378 return get_and_display_threadinfo (ref
);
5382 threadlist_update_test_cmd (char *cmd
, int tty
)
5384 printf_filtered ("Remote Threadlist update test\n");
5385 remote_threadlist_iterator (thread_display_step
, 0, CRAZY_MAX_THREADS
);
5389 init_remote_threadtests (void)
5391 add_com ("tlist", class_obscure
, threadlist_test_cmd
,
5392 "Fetch and print the remote list of thread identifiers, one pkt only");
5393 add_com ("tinfo", class_obscure
, threadinfo_test_cmd
,
5394 "Fetch and display info about one thread");
5395 add_com ("tset", class_obscure
, threadset_test_cmd
,
5396 "Test setting to a different thread");
5397 add_com ("tupd", class_obscure
, threadlist_update_test_cmd
,
5398 "Iterate through updating all remote thread info");
5399 add_com ("talive", class_obscure
, threadalive_test
,
5400 " Remote thread alive test ");
5405 /* Convert a thread ID to a string. Returns the string in a static
5409 remote_pid_to_str (ptid_t ptid
)
5411 static char buf
[30];
5413 sprintf (buf
, "Thread %d", PIDGET (ptid
));
5418 init_remote_ops (void)
5420 remote_ops
.to_shortname
= "remote";
5421 remote_ops
.to_longname
= "Remote serial target in gdb-specific protocol";
5423 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
5424 Specify the serial device it is connected to\n\
5425 (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).";
5426 remote_ops
.to_open
= remote_open
;
5427 remote_ops
.to_close
= remote_close
;
5428 remote_ops
.to_detach
= remote_detach
;
5429 remote_ops
.to_disconnect
= remote_disconnect
;
5430 remote_ops
.to_resume
= remote_resume
;
5431 remote_ops
.to_wait
= remote_wait
;
5432 remote_ops
.to_fetch_registers
= remote_fetch_registers
;
5433 remote_ops
.to_store_registers
= remote_store_registers
;
5434 remote_ops
.to_prepare_to_store
= remote_prepare_to_store
;
5435 remote_ops
.to_xfer_memory
= remote_xfer_memory
;
5436 remote_ops
.to_files_info
= remote_files_info
;
5437 remote_ops
.to_insert_breakpoint
= remote_insert_breakpoint
;
5438 remote_ops
.to_remove_breakpoint
= remote_remove_breakpoint
;
5439 remote_ops
.to_stopped_by_watchpoint
= remote_stopped_by_watchpoint
;
5440 remote_ops
.to_stopped_data_address
= remote_stopped_data_address
;
5441 remote_ops
.to_can_use_hw_breakpoint
= remote_check_watch_resources
;
5442 remote_ops
.to_insert_hw_breakpoint
= remote_insert_hw_breakpoint
;
5443 remote_ops
.to_remove_hw_breakpoint
= remote_remove_hw_breakpoint
;
5444 remote_ops
.to_insert_watchpoint
= remote_insert_watchpoint
;
5445 remote_ops
.to_remove_watchpoint
= remote_remove_watchpoint
;
5446 remote_ops
.to_kill
= remote_kill
;
5447 remote_ops
.to_load
= generic_load
;
5448 remote_ops
.to_mourn_inferior
= remote_mourn
;
5449 remote_ops
.to_thread_alive
= remote_thread_alive
;
5450 remote_ops
.to_find_new_threads
= remote_threads_info
;
5451 remote_ops
.to_pid_to_str
= remote_pid_to_str
;
5452 remote_ops
.to_extra_thread_info
= remote_threads_extra_info
;
5453 remote_ops
.to_stop
= remote_stop
;
5454 remote_ops
.to_query
= remote_query
;
5455 remote_ops
.to_rcmd
= remote_rcmd
;
5456 remote_ops
.to_stratum
= process_stratum
;
5457 remote_ops
.to_has_all_memory
= 1;
5458 remote_ops
.to_has_memory
= 1;
5459 remote_ops
.to_has_stack
= 1;
5460 remote_ops
.to_has_registers
= 1;
5461 remote_ops
.to_has_execution
= 1;
5462 remote_ops
.to_has_thread_control
= tc_schedlock
; /* can lock scheduler */
5463 remote_ops
.to_magic
= OPS_MAGIC
;
5466 /* Set up the extended remote vector by making a copy of the standard
5467 remote vector and adding to it. */
5470 init_extended_remote_ops (void)
5472 extended_remote_ops
= remote_ops
;
5474 extended_remote_ops
.to_shortname
= "extended-remote";
5475 extended_remote_ops
.to_longname
=
5476 "Extended remote serial target in gdb-specific protocol";
5477 extended_remote_ops
.to_doc
=
5478 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
5479 Specify the serial device it is connected to (e.g. /dev/ttya).",
5480 extended_remote_ops
.to_open
= extended_remote_open
;
5481 extended_remote_ops
.to_create_inferior
= extended_remote_create_inferior
;
5482 extended_remote_ops
.to_mourn_inferior
= extended_remote_mourn
;
5486 * Command: info remote-process
5488 * This implements Cisco's version of the "info proc" command.
5490 * This query allows the target stub to return an arbitrary string
5491 * (or strings) giving arbitrary information about the target process.
5492 * This is optional; the target stub isn't required to implement it.
5494 * Syntax: qfProcessInfo request first string
5495 * qsProcessInfo request subsequent string
5496 * reply: 'O'<hex-encoded-string>
5497 * 'l' last reply (empty)
5501 remote_info_process (char *args
, int from_tty
)
5503 struct remote_state
*rs
= get_remote_state ();
5504 char *buf
= alloca (rs
->remote_packet_size
);
5506 if (remote_desc
== 0)
5507 error ("Command can only be used when connected to the remote target.");
5509 putpkt ("qfProcessInfo");
5510 getpkt (buf
, (rs
->remote_packet_size
), 0);
5512 return; /* Silently: target does not support this feature. */
5515 error ("info proc: target error.");
5517 while (buf
[0] == 'O') /* Capitol-O packet */
5519 remote_console_output (&buf
[1]);
5520 putpkt ("qsProcessInfo");
5521 getpkt (buf
, (rs
->remote_packet_size
), 0);
5530 remote_cisco_open (char *name
, int from_tty
)
5534 error ("To open a remote debug connection, you need to specify what \n"
5535 "device is attached to the remote system (e.g. host:port).");
5537 /* See FIXME above */
5538 wait_forever_enabled_p
= 1;
5540 target_preopen (from_tty
);
5542 unpush_target (&remote_cisco_ops
);
5544 remote_desc
= remote_serial_open (name
);
5546 perror_with_name (name
);
5549 * If a baud rate was specified on the gdb command line it will
5550 * be greater than the initial value of -1. If it is, use it otherwise
5554 baud_rate
= (baud_rate
> 0) ? baud_rate
: 9600;
5555 if (serial_setbaudrate (remote_desc
, baud_rate
))
5557 serial_close (remote_desc
);
5558 perror_with_name (name
);
5561 serial_raw (remote_desc
);
5563 /* If there is something sitting in the buffer we might take it as a
5564 response to a command, which would be bad. */
5565 serial_flush_input (remote_desc
);
5569 puts_filtered ("Remote debugging using ");
5570 puts_filtered (name
);
5571 puts_filtered ("\n");
5574 remote_cisco_mode
= 1;
5576 push_target (&remote_cisco_ops
); /* Switch to using cisco target now */
5578 init_all_packet_configs ();
5580 general_thread
= -2;
5581 continue_thread
= -2;
5583 /* Probe for ability to use "ThreadInfo" query, as required. */
5584 use_threadinfo_query
= 1;
5585 use_threadextra_query
= 1;
5587 /* Without this, some commands which require an active target (such
5588 as kill) won't work. This variable serves (at least) double duty
5589 as both the pid of the target process (if it has such), and as a
5590 flag indicating that a target is active. These functions should
5591 be split out into seperate variables, especially since GDB will
5592 someday have a notion of debugging several processes. */
5593 inferior_ptid
= pid_to_ptid (MAGIC_NULL_PID
);
5595 /* Start the remote connection; if error, discard this target. See
5596 the comments in remote_open_1() for further details such as the
5597 need to re-throw the exception. */
5598 ex
= catch_exceptions (uiout
,
5599 remote_start_remote_dummy
, NULL
,
5600 "Couldn't establish connection to remote"
5606 throw_exception (ex
);
5611 remote_cisco_close (int quitting
)
5613 remote_cisco_mode
= 0;
5614 remote_close (quitting
);
5618 remote_cisco_mourn (void)
5620 remote_mourn_1 (&remote_cisco_ops
);
5632 /* Shared between readsocket() and readtty(). The size is arbitrary,
5633 however all targets are known to support a 400 character packet. */
5634 static char tty_input
[400];
5636 static int escape_count
;
5637 static int echo_check
;
5638 extern int quit_flag
;
5645 /* Loop until the socket doesn't have any more data */
5647 while ((data
= readchar (0)) >= 0)
5649 /* Check for the escape sequence */
5652 /* If this is the fourth escape, get out */
5653 if (++escape_count
== 4)
5658 { /* This is a '|', but not the fourth in a row.
5659 Continue without echoing it. If it isn't actually
5660 one of four in a row, it'll be echoed later. */
5667 /* Ensure any pending '|'s are flushed. */
5669 for (; escape_count
> 0; escape_count
--)
5673 if (data
== '\r') /* If this is a return character, */
5674 continue; /* - just supress it. */
5676 if (echo_check
!= -1) /* Check for echo of user input. */
5678 if (tty_input
[echo_check
] == data
)
5680 gdb_assert (echo_check
<= sizeof (tty_input
));
5681 echo_check
++; /* Character matched user input: */
5682 continue; /* Continue without echoing it. */
5684 else if ((data
== '\n') && (tty_input
[echo_check
] == '\r'))
5685 { /* End of the line (and of echo checking). */
5686 echo_check
= -1; /* No more echo supression */
5687 continue; /* Continue without echoing. */
5690 { /* Failed check for echo of user input.
5691 We now have some suppressed output to flush! */
5694 for (j
= 0; j
< echo_check
; j
++)
5695 putchar (tty_input
[j
]);
5699 putchar (data
); /* Default case: output the char. */
5702 if (data
== SERIAL_TIMEOUT
) /* Timeout returned from readchar. */
5703 return READ_MORE
; /* Try to read some more */
5705 return FATAL_ERROR
; /* Trouble, bail out */
5713 /* First, read a buffer full from the terminal */
5714 tty_bytecount
= read (fileno (stdin
), tty_input
, sizeof (tty_input
) - 1);
5715 if (tty_bytecount
== -1)
5717 perror ("readtty: read failed");
5721 /* Remove a quoted newline. */
5722 if (tty_input
[tty_bytecount
- 1] == '\n' &&
5723 tty_input
[tty_bytecount
- 2] == '\\') /* line ending in backslash */
5725 tty_input
[--tty_bytecount
] = 0; /* remove newline */
5726 tty_input
[--tty_bytecount
] = 0; /* remove backslash */
5729 /* Turn trailing newlines into returns */
5730 if (tty_input
[tty_bytecount
- 1] == '\n')
5731 tty_input
[tty_bytecount
- 1] = '\r';
5733 /* If the line consists of a ~, enter debugging mode. */
5734 if ((tty_input
[0] == '~') && (tty_bytecount
== 2))
5737 /* Make this a zero terminated string and write it out */
5738 tty_input
[tty_bytecount
] = 0;
5739 if (serial_write (remote_desc
, tty_input
, tty_bytecount
))
5741 perror_with_name ("readtty: write failed");
5751 fd_set input
; /* file descriptors for select */
5752 int tablesize
; /* max number of FDs for select */
5759 tablesize
= 8 * sizeof (input
);
5763 /* Check for anything from our socket - doesn't block. Note that
5764 this must be done *before* the select as there may be
5765 buffered I/O waiting to be processed. */
5767 if ((status
= readsocket ()) == FATAL_ERROR
)
5769 error ("Debugging terminated by communications error");
5771 else if (status
!= READ_MORE
)
5776 fflush (stdout
); /* Flush output before blocking */
5778 /* Now block on more socket input or TTY input */
5781 FD_SET (fileno (stdin
), &input
);
5782 FD_SET (deprecated_serial_fd (remote_desc
), &input
);
5784 status
= select (tablesize
, &input
, 0, 0, 0);
5785 if ((status
== -1) && (errno
!= EINTR
))
5787 error ("Communications error on select %d", errno
);
5790 /* Handle Control-C typed */
5794 if ((++quit_count
) == 2)
5796 if (query ("Interrupt GDB? "))
5798 printf_filtered ("Interrupted by user.\n");
5799 throw_exception (RETURN_QUIT
);
5806 serial_send_break (remote_desc
);
5808 serial_write (remote_desc
, "\003", 1);
5813 /* Handle console input */
5815 if (FD_ISSET (fileno (stdin
), &input
))
5819 status
= readtty ();
5820 if (status
== READ_MORE
)
5823 return status
; /* telnet session ended */
5829 remote_cisco_wait (ptid_t ptid
, struct target_waitstatus
*status
)
5831 if (minitelnet () != ENTER_DEBUG
)
5833 error ("Debugging session terminated by protocol error");
5836 return remote_wait (ptid
, status
);
5840 init_remote_cisco_ops (void)
5842 remote_cisco_ops
.to_shortname
= "cisco";
5843 remote_cisco_ops
.to_longname
= "Remote serial target in cisco-specific protocol";
5844 remote_cisco_ops
.to_doc
=
5845 "Use a remote machine via TCP, using a cisco-specific protocol.\n\
5846 Specify the serial device it is connected to (e.g. host:2020).";
5847 remote_cisco_ops
.to_open
= remote_cisco_open
;
5848 remote_cisco_ops
.to_close
= remote_cisco_close
;
5849 remote_cisco_ops
.to_detach
= remote_detach
;
5850 remote_cisco_ops
.to_disconnect
= remote_disconnect
;
5851 remote_cisco_ops
.to_resume
= remote_resume
;
5852 remote_cisco_ops
.to_wait
= remote_cisco_wait
;
5853 remote_cisco_ops
.to_fetch_registers
= remote_fetch_registers
;
5854 remote_cisco_ops
.to_store_registers
= remote_store_registers
;
5855 remote_cisco_ops
.to_prepare_to_store
= remote_prepare_to_store
;
5856 remote_cisco_ops
.to_xfer_memory
= remote_xfer_memory
;
5857 remote_cisco_ops
.to_files_info
= remote_files_info
;
5858 remote_cisco_ops
.to_insert_breakpoint
= remote_insert_breakpoint
;
5859 remote_cisco_ops
.to_remove_breakpoint
= remote_remove_breakpoint
;
5860 remote_cisco_ops
.to_remove_hw_breakpoint
= remote_remove_hw_breakpoint
;
5861 remote_cisco_ops
.to_insert_hw_breakpoint
= remote_insert_hw_breakpoint
;
5862 remote_cisco_ops
.to_insert_watchpoint
= remote_insert_watchpoint
;
5863 remote_cisco_ops
.to_remove_watchpoint
= remote_remove_watchpoint
;
5864 remote_cisco_ops
.to_stopped_by_watchpoint
= remote_stopped_by_watchpoint
;
5865 remote_cisco_ops
.to_stopped_data_address
= remote_stopped_data_address
;
5866 remote_cisco_ops
.to_can_use_hw_breakpoint
= remote_check_watch_resources
;
5867 remote_cisco_ops
.to_kill
= remote_kill
;
5868 remote_cisco_ops
.to_load
= generic_load
;
5869 remote_cisco_ops
.to_mourn_inferior
= remote_cisco_mourn
;
5870 remote_cisco_ops
.to_thread_alive
= remote_thread_alive
;
5871 remote_cisco_ops
.to_find_new_threads
= remote_threads_info
;
5872 remote_cisco_ops
.to_pid_to_str
= remote_pid_to_str
;
5873 remote_cisco_ops
.to_extra_thread_info
= remote_threads_extra_info
;
5874 remote_cisco_ops
.to_stratum
= process_stratum
;
5875 remote_cisco_ops
.to_has_all_memory
= 1;
5876 remote_cisco_ops
.to_has_memory
= 1;
5877 remote_cisco_ops
.to_has_stack
= 1;
5878 remote_cisco_ops
.to_has_registers
= 1;
5879 remote_cisco_ops
.to_has_execution
= 1;
5880 remote_cisco_ops
.to_magic
= OPS_MAGIC
;
5884 remote_can_async_p (void)
5886 /* We're async whenever the serial device is. */
5887 return (current_target
.to_async_mask_value
) && serial_can_async_p (remote_desc
);
5891 remote_is_async_p (void)
5893 /* We're async whenever the serial device is. */
5894 return (current_target
.to_async_mask_value
) && serial_is_async_p (remote_desc
);
5897 /* Pass the SERIAL event on and up to the client. One day this code
5898 will be able to delay notifying the client of an event until the
5899 point where an entire packet has been received. */
5901 static void (*async_client_callback
) (enum inferior_event_type event_type
, void *context
);
5902 static void *async_client_context
;
5903 static serial_event_ftype remote_async_serial_handler
;
5906 remote_async_serial_handler (struct serial
*scb
, void *context
)
5908 /* Don't propogate error information up to the client. Instead let
5909 the client find out about the error by querying the target. */
5910 async_client_callback (INF_REG_EVENT
, async_client_context
);
5914 remote_async (void (*callback
) (enum inferior_event_type event_type
, void *context
), void *context
)
5916 if (current_target
.to_async_mask_value
== 0)
5917 internal_error (__FILE__
, __LINE__
,
5918 "Calling remote_async when async is masked");
5920 if (callback
!= NULL
)
5922 serial_async (remote_desc
, remote_async_serial_handler
, NULL
);
5923 async_client_callback
= callback
;
5924 async_client_context
= context
;
5927 serial_async (remote_desc
, NULL
, NULL
);
5930 /* Target async and target extended-async.
5932 This are temporary targets, until it is all tested. Eventually
5933 async support will be incorporated int the usual 'remote'
5937 init_remote_async_ops (void)
5939 remote_async_ops
.to_shortname
= "async";
5940 remote_async_ops
.to_longname
= "Remote serial target in async version of the gdb-specific protocol";
5941 remote_async_ops
.to_doc
=
5942 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
5943 Specify the serial device it is connected to (e.g. /dev/ttya).";
5944 remote_async_ops
.to_open
= remote_async_open
;
5945 remote_async_ops
.to_close
= remote_close
;
5946 remote_async_ops
.to_detach
= remote_detach
;
5947 remote_async_ops
.to_disconnect
= remote_disconnect
;
5948 remote_async_ops
.to_resume
= remote_async_resume
;
5949 remote_async_ops
.to_wait
= remote_async_wait
;
5950 remote_async_ops
.to_fetch_registers
= remote_fetch_registers
;
5951 remote_async_ops
.to_store_registers
= remote_store_registers
;
5952 remote_async_ops
.to_prepare_to_store
= remote_prepare_to_store
;
5953 remote_async_ops
.to_xfer_memory
= remote_xfer_memory
;
5954 remote_async_ops
.to_files_info
= remote_files_info
;
5955 remote_async_ops
.to_insert_breakpoint
= remote_insert_breakpoint
;
5956 remote_async_ops
.to_remove_breakpoint
= remote_remove_breakpoint
;
5957 remote_async_ops
.to_can_use_hw_breakpoint
= remote_check_watch_resources
;
5958 remote_async_ops
.to_insert_hw_breakpoint
= remote_insert_hw_breakpoint
;
5959 remote_async_ops
.to_remove_hw_breakpoint
= remote_remove_hw_breakpoint
;
5960 remote_async_ops
.to_insert_watchpoint
= remote_insert_watchpoint
;
5961 remote_async_ops
.to_remove_watchpoint
= remote_remove_watchpoint
;
5962 remote_async_ops
.to_stopped_by_watchpoint
= remote_stopped_by_watchpoint
;
5963 remote_async_ops
.to_stopped_data_address
= remote_stopped_data_address
;
5964 remote_async_ops
.to_terminal_inferior
= remote_async_terminal_inferior
;
5965 remote_async_ops
.to_terminal_ours
= remote_async_terminal_ours
;
5966 remote_async_ops
.to_kill
= remote_async_kill
;
5967 remote_async_ops
.to_load
= generic_load
;
5968 remote_async_ops
.to_mourn_inferior
= remote_async_mourn
;
5969 remote_async_ops
.to_thread_alive
= remote_thread_alive
;
5970 remote_async_ops
.to_find_new_threads
= remote_threads_info
;
5971 remote_async_ops
.to_pid_to_str
= remote_pid_to_str
;
5972 remote_async_ops
.to_extra_thread_info
= remote_threads_extra_info
;
5973 remote_async_ops
.to_stop
= remote_stop
;
5974 remote_async_ops
.to_query
= remote_query
;
5975 remote_async_ops
.to_rcmd
= remote_rcmd
;
5976 remote_async_ops
.to_stratum
= process_stratum
;
5977 remote_async_ops
.to_has_all_memory
= 1;
5978 remote_async_ops
.to_has_memory
= 1;
5979 remote_async_ops
.to_has_stack
= 1;
5980 remote_async_ops
.to_has_registers
= 1;
5981 remote_async_ops
.to_has_execution
= 1;
5982 remote_async_ops
.to_has_thread_control
= tc_schedlock
; /* can lock scheduler */
5983 remote_async_ops
.to_can_async_p
= remote_can_async_p
;
5984 remote_async_ops
.to_is_async_p
= remote_is_async_p
;
5985 remote_async_ops
.to_async
= remote_async
;
5986 remote_async_ops
.to_async_mask_value
= 1;
5987 remote_async_ops
.to_magic
= OPS_MAGIC
;
5990 /* Set up the async extended remote vector by making a copy of the standard
5991 remote vector and adding to it. */
5994 init_extended_async_remote_ops (void)
5996 extended_async_remote_ops
= remote_async_ops
;
5998 extended_async_remote_ops
.to_shortname
= "extended-async";
5999 extended_async_remote_ops
.to_longname
=
6000 "Extended remote serial target in async gdb-specific protocol";
6001 extended_async_remote_ops
.to_doc
=
6002 "Use a remote computer via a serial line, using an async gdb-specific protocol.\n\
6003 Specify the serial device it is connected to (e.g. /dev/ttya).",
6004 extended_async_remote_ops
.to_open
= extended_remote_async_open
;
6005 extended_async_remote_ops
.to_create_inferior
= extended_remote_async_create_inferior
;
6006 extended_async_remote_ops
.to_mourn_inferior
= extended_remote_mourn
;
6010 set_remote_cmd (char *args
, int from_tty
)
6015 show_remote_cmd (char *args
, int from_tty
)
6017 /* FIXME: cagney/2002-06-15: This function should iterate over
6018 remote_show_cmdlist for a list of sub commands to show. */
6019 show_remote_protocol_Z_packet_cmd (args
, from_tty
, NULL
);
6020 show_remote_protocol_e_packet_cmd (args
, from_tty
, NULL
);
6021 show_remote_protocol_E_packet_cmd (args
, from_tty
, NULL
);
6022 show_remote_protocol_P_packet_cmd (args
, from_tty
, NULL
);
6023 show_remote_protocol_qSymbol_packet_cmd (args
, from_tty
, NULL
);
6024 show_remote_protocol_binary_download_cmd (args
, from_tty
, NULL
);
6028 build_remote_gdbarch_data (void)
6030 remote_address_size
= TARGET_ADDR_BIT
;
6033 /* Saved pointer to previous owner of the new_objfile event. */
6034 static void (*remote_new_objfile_chain
) (struct objfile
*);
6036 /* Function to be called whenever a new objfile (shlib) is detected. */
6038 remote_new_objfile (struct objfile
*objfile
)
6040 if (remote_desc
!= 0) /* Have a remote connection */
6042 remote_check_symbols (objfile
);
6044 /* Call predecessor on chain, if any. */
6045 if (remote_new_objfile_chain
!= 0 &&
6047 remote_new_objfile_chain (objfile
);
6051 _initialize_remote (void)
6053 static struct cmd_list_element
*remote_set_cmdlist
;
6054 static struct cmd_list_element
*remote_show_cmdlist
;
6055 struct cmd_list_element
*tmpcmd
;
6057 /* architecture specific data */
6058 remote_gdbarch_data_handle
= register_gdbarch_data (init_remote_state
,
6061 /* Old tacky stuff. NOTE: This comes after the remote protocol so
6062 that the remote protocol has been initialized. */
6063 register_gdbarch_swap (&remote_address_size
,
6064 sizeof (&remote_address_size
), NULL
);
6065 register_gdbarch_swap (NULL
, 0, build_remote_gdbarch_data
);
6068 add_target (&remote_ops
);
6070 init_extended_remote_ops ();
6071 add_target (&extended_remote_ops
);
6073 init_remote_async_ops ();
6074 add_target (&remote_async_ops
);
6076 init_extended_async_remote_ops ();
6077 add_target (&extended_async_remote_ops
);
6079 init_remote_cisco_ops ();
6080 add_target (&remote_cisco_ops
);
6082 /* Hook into new objfile notification. */
6083 remote_new_objfile_chain
= target_new_objfile_hook
;
6084 target_new_objfile_hook
= remote_new_objfile
;
6087 init_remote_threadtests ();
6090 /* set/show remote ... */
6092 add_prefix_cmd ("remote", class_maintenance
, set_remote_cmd
, "\
6093 Remote protocol specific variables\n\
6094 Configure various remote-protocol specific variables such as\n\
6095 the packets being used",
6096 &remote_set_cmdlist
, "set remote ",
6097 0/*allow-unknown*/, &setlist
);
6098 add_prefix_cmd ("remote", class_maintenance
, show_remote_cmd
, "\
6099 Remote protocol specific variables\n\
6100 Configure various remote-protocol specific variables such as\n\
6101 the packets being used",
6102 &remote_show_cmdlist
, "show remote ",
6103 0/*allow-unknown*/, &showlist
);
6105 add_cmd ("compare-sections", class_obscure
, compare_sections_command
,
6106 "Compare section data on target to the exec file.\n\
6107 Argument is a single section name (default: all loaded sections).",
6110 add_cmd ("packet", class_maintenance
, packet_command
,
6111 "Send an arbitrary packet to a remote target.\n\
6112 maintenance packet TEXT\n\
6113 If GDB is talking to an inferior via the GDB serial protocol, then\n\
6114 this command sends the string TEXT to the inferior, and displays the\n\
6115 response packet. GDB supplies the initial `$' character, and the\n\
6116 terminating `#' character and checksum.",
6119 add_setshow_boolean_cmd ("remotebreak", no_class
, &remote_break
,
6120 "Set whether to send break if interrupted.\n",
6121 "Show whether to send break if interrupted.\n",
6123 &setlist
, &showlist
);
6125 /* Install commands for configuring memory read/write packets. */
6127 add_cmd ("remotewritesize", no_class
, set_memory_write_packet_size
,
6128 "Set the maximum number of bytes per memory write packet (deprecated).\n",
6130 add_cmd ("remotewritesize", no_class
, show_memory_write_packet_size
,
6131 "Show the maximum number of bytes per memory write packet (deprecated).\n",
6133 add_cmd ("memory-write-packet-size", no_class
,
6134 set_memory_write_packet_size
,
6135 "Set the maximum number of bytes per memory-write packet.\n"
6136 "Specify the number of bytes in a packet or 0 (zero) for the\n"
6137 "default packet size. The actual limit is further reduced\n"
6138 "dependent on the target. Specify ``fixed'' to disable the\n"
6139 "further restriction and ``limit'' to enable that restriction\n",
6140 &remote_set_cmdlist
);
6141 add_cmd ("memory-read-packet-size", no_class
,
6142 set_memory_read_packet_size
,
6143 "Set the maximum number of bytes per memory-read packet.\n"
6144 "Specify the number of bytes in a packet or 0 (zero) for the\n"
6145 "default packet size. The actual limit is further reduced\n"
6146 "dependent on the target. Specify ``fixed'' to disable the\n"
6147 "further restriction and ``limit'' to enable that restriction\n",
6148 &remote_set_cmdlist
);
6149 add_cmd ("memory-write-packet-size", no_class
,
6150 show_memory_write_packet_size
,
6151 "Show the maximum number of bytes per memory-write packet.\n",
6152 &remote_show_cmdlist
);
6153 add_cmd ("memory-read-packet-size", no_class
,
6154 show_memory_read_packet_size
,
6155 "Show the maximum number of bytes per memory-read packet.\n",
6156 &remote_show_cmdlist
);
6158 add_setshow_cmd ("hardware-watchpoint-limit", no_class
,
6159 var_zinteger
, &remote_hw_watchpoint_limit
, "\
6160 Set the maximum number of target hardware watchpoints.\n\
6161 Specify a negative limit for unlimited.", "\
6162 Show the maximum number of target hardware watchpoints.\n",
6163 NULL
, NULL
, &remote_set_cmdlist
, &remote_show_cmdlist
);
6164 add_setshow_cmd ("hardware-breakpoint-limit", no_class
,
6165 var_zinteger
, &remote_hw_breakpoint_limit
, "\
6166 Set the maximum number of target hardware breakpoints.\n\
6167 Specify a negative limit for unlimited.", "\
6168 Show the maximum number of target hardware breakpoints.\n",
6169 NULL
, NULL
, &remote_set_cmdlist
, &remote_show_cmdlist
);
6172 (add_set_cmd ("remoteaddresssize", class_obscure
,
6173 var_integer
, (char *) &remote_address_size
,
6174 "Set the maximum size of the address (in bits) \
6175 in a memory packet.\n",
6179 add_packet_config_cmd (&remote_protocol_binary_download
,
6180 "X", "binary-download",
6181 set_remote_protocol_binary_download_cmd
,
6182 show_remote_protocol_binary_download_cmd
,
6183 &remote_set_cmdlist
, &remote_show_cmdlist
,
6186 /* XXXX - should ``set remotebinarydownload'' be retained for
6189 (add_set_cmd ("remotebinarydownload", no_class
,
6190 var_boolean
, (char *) &remote_binary_download
,
6191 "Set binary downloads.\n", &setlist
),
6195 add_info ("remote-process", remote_info_process
,
6196 "Query the remote system for process info.");
6198 add_packet_config_cmd (&remote_protocol_qSymbol
,
6199 "qSymbol", "symbol-lookup",
6200 set_remote_protocol_qSymbol_packet_cmd
,
6201 show_remote_protocol_qSymbol_packet_cmd
,
6202 &remote_set_cmdlist
, &remote_show_cmdlist
,
6205 add_packet_config_cmd (&remote_protocol_e
,
6206 "e", "step-over-range",
6207 set_remote_protocol_e_packet_cmd
,
6208 show_remote_protocol_e_packet_cmd
,
6209 &remote_set_cmdlist
, &remote_show_cmdlist
,
6211 /* Disable by default. The ``e'' packet has nasty interactions with
6212 the threading code - it relies on global state. */
6213 remote_protocol_e
.detect
= AUTO_BOOLEAN_FALSE
;
6214 update_packet_config (&remote_protocol_e
);
6216 add_packet_config_cmd (&remote_protocol_E
,
6217 "E", "step-over-range-w-signal",
6218 set_remote_protocol_E_packet_cmd
,
6219 show_remote_protocol_E_packet_cmd
,
6220 &remote_set_cmdlist
, &remote_show_cmdlist
,
6222 /* Disable by default. The ``e'' packet has nasty interactions with
6223 the threading code - it relies on global state. */
6224 remote_protocol_E
.detect
= AUTO_BOOLEAN_FALSE
;
6225 update_packet_config (&remote_protocol_E
);
6227 add_packet_config_cmd (&remote_protocol_P
,
6228 "P", "set-register",
6229 set_remote_protocol_P_packet_cmd
,
6230 show_remote_protocol_P_packet_cmd
,
6231 &remote_set_cmdlist
, &remote_show_cmdlist
,
6234 add_packet_config_cmd (&remote_protocol_Z
[Z_PACKET_SOFTWARE_BP
],
6235 "Z0", "software-breakpoint",
6236 set_remote_protocol_Z_software_bp_packet_cmd
,
6237 show_remote_protocol_Z_software_bp_packet_cmd
,
6238 &remote_set_cmdlist
, &remote_show_cmdlist
,
6241 add_packet_config_cmd (&remote_protocol_Z
[Z_PACKET_HARDWARE_BP
],
6242 "Z1", "hardware-breakpoint",
6243 set_remote_protocol_Z_hardware_bp_packet_cmd
,
6244 show_remote_protocol_Z_hardware_bp_packet_cmd
,
6245 &remote_set_cmdlist
, &remote_show_cmdlist
,
6248 add_packet_config_cmd (&remote_protocol_Z
[Z_PACKET_WRITE_WP
],
6249 "Z2", "write-watchpoint",
6250 set_remote_protocol_Z_write_wp_packet_cmd
,
6251 show_remote_protocol_Z_write_wp_packet_cmd
,
6252 &remote_set_cmdlist
, &remote_show_cmdlist
,
6255 add_packet_config_cmd (&remote_protocol_Z
[Z_PACKET_READ_WP
],
6256 "Z3", "read-watchpoint",
6257 set_remote_protocol_Z_read_wp_packet_cmd
,
6258 show_remote_protocol_Z_read_wp_packet_cmd
,
6259 &remote_set_cmdlist
, &remote_show_cmdlist
,
6262 add_packet_config_cmd (&remote_protocol_Z
[Z_PACKET_ACCESS_WP
],
6263 "Z4", "access-watchpoint",
6264 set_remote_protocol_Z_access_wp_packet_cmd
,
6265 show_remote_protocol_Z_access_wp_packet_cmd
,
6266 &remote_set_cmdlist
, &remote_show_cmdlist
,
6269 /* Keep the old ``set remote Z-packet ...'' working. */
6270 add_setshow_auto_boolean_cmd ("Z-packet", class_obscure
,
6271 &remote_Z_packet_detect
, "\
6272 Set use of remote protocol `Z' packets",
6273 "Show use of remote protocol `Z' packets ",
6274 set_remote_protocol_Z_packet_cmd
,
6275 show_remote_protocol_Z_packet_cmd
,
6276 &remote_set_cmdlist
, &remote_show_cmdlist
);
6278 /* Eventually initialize fileio. See fileio.c */
6279 initialize_remote_fileio (remote_set_cmdlist
, remote_show_cmdlist
);