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: %s",
3295 case 'S': /* Old style status, just signal only */
3296 status
->kind
= TARGET_WAITKIND_STOPPED
;
3297 status
->value
.sig
= (enum target_signal
)
3298 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
3302 /* Export Cisco kernel mode as a convenience variable
3303 (so that it can be used in the GDB prompt if desired). */
3305 if (cisco_kernel_mode
== 1)
3306 set_internalvar (lookup_internalvar ("cisco_kernel_mode"),
3307 value_from_string ("PDEBUG-"));
3308 cisco_kernel_mode
= 0;
3309 thread_num
= strtol ((const char *) &buf
[4], NULL
, 16);
3310 record_currthread (thread_num
);
3312 else if (buf
[3] == 'k')
3314 /* Export Cisco kernel mode as a convenience variable
3315 (so that it can be used in the GDB prompt if desired). */
3317 if (cisco_kernel_mode
== 1)
3318 set_internalvar (lookup_internalvar ("cisco_kernel_mode"),
3319 value_from_string ("KDEBUG-"));
3320 cisco_kernel_mode
= 1;
3323 case 'N': /* Cisco special: status and offsets */
3325 bfd_vma text_addr
, data_addr
, bss_addr
;
3326 bfd_signed_vma text_off
, data_off
, bss_off
;
3329 status
->kind
= TARGET_WAITKIND_STOPPED
;
3330 status
->value
.sig
= (enum target_signal
)
3331 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
3333 if (symfile_objfile
== NULL
)
3335 warning ("Relocation packet recieved with no symbol file. \
3340 /* Relocate object file. Buffer format is NAATT;DD;BB
3341 * where AA is the signal number, TT is the new text
3342 * address, DD * is the new data address, and BB is the
3343 * new bss address. */
3346 text_addr
= strtoul (p
, (char **) &p1
, 16);
3347 if (p1
== p
|| *p1
!= ';')
3348 warning ("Malformed relocation packet: Packet '%s'", buf
);
3350 data_addr
= strtoul (p
, (char **) &p1
, 16);
3351 if (p1
== p
|| *p1
!= ';')
3352 warning ("Malformed relocation packet: Packet '%s'", buf
);
3354 bss_addr
= strtoul (p
, (char **) &p1
, 16);
3356 warning ("Malformed relocation packet: Packet '%s'", buf
);
3358 if (remote_cisco_section_offsets (text_addr
, data_addr
, bss_addr
,
3359 &text_off
, &data_off
, &bss_off
)
3361 if (text_off
!= 0 || data_off
!= 0 || bss_off
!= 0)
3362 remote_cisco_objfile_relocate (text_off
, data_off
, bss_off
);
3366 case 'W': /* Target exited */
3368 /* The remote process exited. */
3369 status
->kind
= TARGET_WAITKIND_EXITED
;
3370 status
->value
.integer
= (fromhex (buf
[1]) << 4) + fromhex (buf
[2]);
3374 status
->kind
= TARGET_WAITKIND_SIGNALLED
;
3375 status
->value
.sig
= (enum target_signal
)
3376 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
3380 case 'O': /* Console output */
3381 remote_console_output (buf
+ 1);
3382 /* Return immediately to the event loop. The event loop will
3383 still be waiting on the inferior afterwards. */
3384 status
->kind
= TARGET_WAITKIND_IGNORE
;
3387 if (last_sent_signal
!= TARGET_SIGNAL_0
)
3389 /* Zero length reply means that we tried 'S' or 'C' and
3390 the remote system doesn't support it. */
3391 target_terminal_ours_for_output ();
3393 ("Can't send signals to this remote system. %s not sent.\n",
3394 target_signal_to_name (last_sent_signal
));
3395 last_sent_signal
= TARGET_SIGNAL_0
;
3396 target_terminal_inferior ();
3398 strcpy ((char *) buf
, last_sent_step
? "s" : "c");
3399 putpkt ((char *) buf
);
3402 /* else fallthrough */
3404 warning ("Invalid remote reply: %s", buf
);
3409 if (thread_num
!= -1)
3411 return pid_to_ptid (thread_num
);
3413 return inferior_ptid
;
3416 /* Number of bytes of registers this stub implements. */
3418 static int register_bytes_found
;
3420 /* Read the remote registers into the block REGS. */
3421 /* Currently we just read all the registers, so we don't use regnum. */
3425 remote_fetch_registers (int regnum
)
3427 struct remote_state
*rs
= get_remote_state ();
3428 char *buf
= alloca (rs
->remote_packet_size
);
3431 char *regs
= alloca (rs
->sizeof_g_packet
);
3433 set_thread (PIDGET (inferior_ptid
), 1);
3437 struct packet_reg
*reg
= packet_reg_from_regnum (rs
, regnum
);
3438 gdb_assert (reg
!= NULL
);
3439 if (!reg
->in_g_packet
)
3440 internal_error (__FILE__
, __LINE__
,
3441 "Attempt to fetch a non G-packet register when this "
3442 "remote.c does not support the p-packet.");
3446 remote_send (buf
, (rs
->remote_packet_size
));
3448 /* Save the size of the packet sent to us by the target. Its used
3449 as a heuristic when determining the max size of packets that the
3450 target can safely receive. */
3451 if ((rs
->actual_register_packet_size
) == 0)
3452 (rs
->actual_register_packet_size
) = strlen (buf
);
3454 /* Unimplemented registers read as all bits zero. */
3455 memset (regs
, 0, rs
->sizeof_g_packet
);
3457 /* We can get out of synch in various cases. If the first character
3458 in the buffer is not a hex character, assume that has happened
3459 and try to fetch another packet to read. */
3460 while ((buf
[0] < '0' || buf
[0] > '9')
3461 && (buf
[0] < 'a' || buf
[0] > 'f')
3462 && buf
[0] != 'x') /* New: unavailable register value */
3465 fprintf_unfiltered (gdb_stdlog
,
3466 "Bad register packet; fetching a new packet\n");
3467 getpkt (buf
, (rs
->remote_packet_size
), 0);
3470 /* Reply describes registers byte by byte, each byte encoded as two
3471 hex characters. Suck them all up, then supply them to the
3472 register cacheing/storage mechanism. */
3475 for (i
= 0; i
< rs
->sizeof_g_packet
; i
++)
3481 warning ("Remote reply is of odd length: %s", buf
);
3482 /* Don't change register_bytes_found in this case, and don't
3483 print a second warning. */
3486 if (p
[0] == 'x' && p
[1] == 'x')
3487 regs
[i
] = 0; /* 'x' */
3489 regs
[i
] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
3493 if (i
!= register_bytes_found
)
3495 register_bytes_found
= i
;
3496 if (REGISTER_BYTES_OK_P ()
3497 && !REGISTER_BYTES_OK (i
))
3498 warning ("Remote reply is too short: %s", buf
);
3504 for (i
= 0; i
< NUM_REGS
+ NUM_PSEUDO_REGS
; i
++)
3506 struct packet_reg
*r
= &rs
->regs
[i
];
3509 supply_register (r
->regnum
, regs
+ r
->offset
);
3510 if (buf
[r
->offset
* 2] == 'x')
3511 set_register_cached (i
, -1);
3517 /* Prepare to store registers. Since we may send them all (using a
3518 'G' request), we have to read out the ones we don't want to change
3522 remote_prepare_to_store (void)
3524 struct remote_state
*rs
= get_remote_state ();
3526 char buf
[MAX_REGISTER_SIZE
];
3528 /* Make sure the entire registers array is valid. */
3529 switch (remote_protocol_P
.support
)
3531 case PACKET_DISABLE
:
3532 case PACKET_SUPPORT_UNKNOWN
:
3533 /* Make sure all the necessary registers are cached. */
3534 for (i
= 0; i
< NUM_REGS
; i
++)
3535 if (rs
->regs
[i
].in_g_packet
)
3536 regcache_raw_read (current_regcache
, rs
->regs
[i
].regnum
, buf
);
3543 /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF
3544 packet was not recognized. */
3547 store_register_using_P (int regnum
)
3549 struct remote_state
*rs
= get_remote_state ();
3550 struct packet_reg
*reg
= packet_reg_from_regnum (rs
, regnum
);
3551 /* Try storing a single register. */
3552 char *buf
= alloca (rs
->remote_packet_size
);
3553 char regp
[MAX_REGISTER_SIZE
];
3557 sprintf (buf
, "P%s=", phex_nz (reg
->pnum
, 0));
3558 p
= buf
+ strlen (buf
);
3559 regcache_collect (reg
->regnum
, regp
);
3560 bin2hex (regp
, p
, REGISTER_RAW_SIZE (reg
->regnum
));
3561 remote_send (buf
, rs
->remote_packet_size
);
3563 return buf
[0] != '\0';
3567 /* Store register REGNUM, or all registers if REGNUM == -1, from the contents
3568 of the register cache buffer. FIXME: ignores errors. */
3571 remote_store_registers (int regnum
)
3573 struct remote_state
*rs
= get_remote_state ();
3579 set_thread (PIDGET (inferior_ptid
), 1);
3583 switch (remote_protocol_P
.support
)
3585 case PACKET_DISABLE
:
3588 if (store_register_using_P (regnum
))
3591 error ("Protocol error: P packet not recognized by stub");
3592 case PACKET_SUPPORT_UNKNOWN
:
3593 if (store_register_using_P (regnum
))
3595 /* The stub recognized the 'P' packet. Remember this. */
3596 remote_protocol_P
.support
= PACKET_ENABLE
;
3601 /* The stub does not support the 'P' packet. Use 'G'
3602 instead, and don't try using 'P' in the future (it
3603 will just waste our time). */
3604 remote_protocol_P
.support
= PACKET_DISABLE
;
3610 /* Extract all the registers in the regcache copying them into a
3614 regs
= alloca (rs
->sizeof_g_packet
);
3615 memset (regs
, rs
->sizeof_g_packet
, 0);
3616 for (i
= 0; i
< NUM_REGS
+ NUM_PSEUDO_REGS
; i
++)
3618 struct packet_reg
*r
= &rs
->regs
[i
];
3620 regcache_collect (r
->regnum
, regs
+ r
->offset
);
3624 /* Command describes registers byte by byte,
3625 each byte encoded as two hex characters. */
3626 buf
= alloca (rs
->remote_packet_size
);
3629 /* remote_prepare_to_store insures that register_bytes_found gets set. */
3630 bin2hex (regs
, p
, register_bytes_found
);
3631 remote_send (buf
, (rs
->remote_packet_size
));
3635 /* Return the number of hex digits in num. */
3638 hexnumlen (ULONGEST num
)
3642 for (i
= 0; num
!= 0; i
++)
3648 /* Set BUF to the minimum number of hex digits representing NUM. */
3651 hexnumstr (char *buf
, ULONGEST num
)
3653 int len
= hexnumlen (num
);
3654 return hexnumnstr (buf
, num
, len
);
3658 /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */
3661 hexnumnstr (char *buf
, ULONGEST num
, int width
)
3667 for (i
= width
- 1; i
>= 0; i
--)
3669 buf
[i
] = "0123456789abcdef"[(num
& 0xf)];
3676 /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */
3679 remote_address_masked (CORE_ADDR addr
)
3681 if (remote_address_size
> 0
3682 && remote_address_size
< (sizeof (ULONGEST
) * 8))
3684 /* Only create a mask when that mask can safely be constructed
3685 in a ULONGEST variable. */
3687 mask
= (mask
<< remote_address_size
) - 1;
3693 /* Determine whether the remote target supports binary downloading.
3694 This is accomplished by sending a no-op memory write of zero length
3695 to the target at the specified address. It does not suffice to send
3696 the whole packet, since many stubs strip the eighth bit and subsequently
3697 compute a wrong checksum, which causes real havoc with remote_write_bytes.
3699 NOTE: This can still lose if the serial line is not eight-bit
3700 clean. In cases like this, the user should clear "remote
3704 check_binary_download (CORE_ADDR addr
)
3706 struct remote_state
*rs
= get_remote_state ();
3707 switch (remote_protocol_binary_download
.support
)
3709 case PACKET_DISABLE
:
3713 case PACKET_SUPPORT_UNKNOWN
:
3715 char *buf
= alloca (rs
->remote_packet_size
);
3720 p
+= hexnumstr (p
, (ULONGEST
) addr
);
3722 p
+= hexnumstr (p
, (ULONGEST
) 0);
3726 putpkt_binary (buf
, (int) (p
- buf
));
3727 getpkt (buf
, (rs
->remote_packet_size
), 0);
3732 fprintf_unfiltered (gdb_stdlog
,
3733 "binary downloading NOT suppported by target\n");
3734 remote_protocol_binary_download
.support
= PACKET_DISABLE
;
3739 fprintf_unfiltered (gdb_stdlog
,
3740 "binary downloading suppported by target\n");
3741 remote_protocol_binary_download
.support
= PACKET_ENABLE
;
3748 /* Write memory data directly to the remote machine.
3749 This does not inform the data cache; the data cache uses this.
3750 MEMADDR is the address in the remote memory space.
3751 MYADDR is the address of the buffer in our space.
3752 LEN is the number of bytes.
3754 Returns number of bytes transferred, or 0 (setting errno) for
3755 error. Only transfer a single packet. */
3758 remote_write_bytes (CORE_ADDR memaddr
, char *myaddr
, int len
)
3762 unsigned char *plen
;
3768 unsigned char *payload_start
;
3770 /* Verify that the target can support a binary download. */
3771 check_binary_download (memaddr
);
3773 /* Compute the size, and then allocate space for the largest
3774 possible packet. Include space for an extra trailing NUL. */
3775 sizeof_buf
= get_memory_write_packet_size () + 1;
3776 buf
= alloca (sizeof_buf
);
3778 /* Compute the size of the actual payload by subtracting out the
3779 packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */
3780 payload_size
= (get_memory_write_packet_size () - (strlen ("$M,:#NN")
3781 + hexnumlen (memaddr
)
3782 + hexnumlen (len
)));
3784 /* Construct the packet header: "[MX]<memaddr>,<len>:". */
3786 /* Append "[XM]". Compute a best guess of the number of bytes
3787 actually transfered. */
3789 switch (remote_protocol_binary_download
.support
)
3793 /* Best guess at number of bytes that will fit. */
3794 todo
= min (len
, payload_size
);
3796 case PACKET_DISABLE
:
3798 /* num bytes that will fit */
3799 todo
= min (len
, payload_size
/ 2);
3801 case PACKET_SUPPORT_UNKNOWN
:
3802 internal_error (__FILE__
, __LINE__
,
3803 "remote_write_bytes: bad internal state");
3805 internal_error (__FILE__
, __LINE__
, "bad switch");
3808 /* Append "<memaddr>". */
3809 memaddr
= remote_address_masked (memaddr
);
3810 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
3815 /* Append <len>. Retain the location/size of <len>. It may need to
3816 be adjusted once the packet body has been created. */
3818 plenlen
= hexnumstr (p
, (ULONGEST
) todo
);
3825 /* Append the packet body. */
3827 switch (remote_protocol_binary_download
.support
)
3830 /* Binary mode. Send target system values byte by byte, in
3831 increasing byte addresses. Only escape certain critical
3834 (nr_bytes
< todo
) && (p
- payload_start
) < payload_size
;
3837 switch (myaddr
[nr_bytes
] & 0xff)
3842 /* These must be escaped */
3844 *p
++ = (myaddr
[nr_bytes
] & 0xff) ^ 0x20;
3847 *p
++ = myaddr
[nr_bytes
] & 0xff;
3851 if (nr_bytes
< todo
)
3853 /* Escape chars have filled up the buffer prematurely,
3854 and we have actually sent fewer bytes than planned.
3855 Fix-up the length field of the packet. Use the same
3856 number of characters as before. */
3857 plen
+= hexnumnstr (plen
, (ULONGEST
) nr_bytes
, plenlen
);
3858 *plen
= ':'; /* overwrite \0 from hexnumnstr() */
3861 case PACKET_DISABLE
:
3862 /* Normal mode: Send target system values byte by byte, in
3863 increasing byte addresses. Each byte is encoded as a two hex
3865 nr_bytes
= bin2hex (myaddr
, p
, todo
);
3868 case PACKET_SUPPORT_UNKNOWN
:
3869 internal_error (__FILE__
, __LINE__
,
3870 "remote_write_bytes: bad internal state");
3872 internal_error (__FILE__
, __LINE__
, "bad switch");
3875 putpkt_binary (buf
, (int) (p
- buf
));
3876 getpkt (buf
, sizeof_buf
, 0);
3880 /* There is no correspondance between what the remote protocol
3881 uses for errors and errno codes. We would like a cleaner way
3882 of representing errors (big enough to include errno codes,
3883 bfd_error codes, and others). But for now just return EIO. */
3888 /* Return NR_BYTES, not TODO, in case escape chars caused us to send fewer
3889 bytes than we'd planned. */
3893 /* Read memory data directly from the remote machine.
3894 This does not use the data cache; the data cache uses this.
3895 MEMADDR is the address in the remote memory space.
3896 MYADDR is the address of the buffer in our space.
3897 LEN is the number of bytes.
3899 Returns number of bytes transferred, or 0 for error. */
3901 /* NOTE: cagney/1999-10-18: This function (and its siblings in other
3902 remote targets) shouldn't attempt to read the entire buffer.
3903 Instead it should read a single packet worth of data and then
3904 return the byte size of that packet to the caller. The caller (its
3905 caller and its callers caller ;-) already contains code for
3906 handling partial reads. */
3909 remote_read_bytes (CORE_ADDR memaddr
, char *myaddr
, int len
)
3912 int max_buf_size
; /* Max size of packet output buffer */
3916 /* Create a buffer big enough for this packet. */
3917 max_buf_size
= get_memory_read_packet_size ();
3918 sizeof_buf
= max_buf_size
+ 1; /* Space for trailing NUL */
3919 buf
= alloca (sizeof_buf
);
3928 todo
= min (len
, max_buf_size
/ 2); /* num bytes that will fit */
3930 /* construct "m"<memaddr>","<len>" */
3931 /* sprintf (buf, "m%lx,%x", (unsigned long) memaddr, todo); */
3932 memaddr
= remote_address_masked (memaddr
);
3935 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
3937 p
+= hexnumstr (p
, (ULONGEST
) todo
);
3941 getpkt (buf
, sizeof_buf
, 0);
3944 && isxdigit (buf
[1]) && isxdigit (buf
[2])
3947 /* There is no correspondance between what the remote protocol uses
3948 for errors and errno codes. We would like a cleaner way of
3949 representing errors (big enough to include errno codes, bfd_error
3950 codes, and others). But for now just return EIO. */
3955 /* Reply describes memory byte by byte,
3956 each byte encoded as two hex characters. */
3959 if ((i
= hex2bin (p
, myaddr
, todo
)) < todo
)
3961 /* Reply is short. This means that we were able to read
3962 only part of what we wanted to. */
3963 return i
+ (origlen
- len
);
3972 /* Read or write LEN bytes from inferior memory at MEMADDR,
3973 transferring to or from debugger address BUFFER. Write to inferior if
3974 SHOULD_WRITE is nonzero. Returns length of data written or read; 0
3975 for error. TARGET is unused. */
3979 remote_xfer_memory (CORE_ADDR mem_addr
, char *buffer
, int mem_len
,
3980 int should_write
, struct mem_attrib
*attrib
,
3981 struct target_ops
*target
)
3983 CORE_ADDR targ_addr
;
3987 /* Should this be the selected frame? */
3988 gdbarch_remote_translate_xfer_address (current_gdbarch
, current_regcache
,
3990 &targ_addr
, &targ_len
);
3995 res
= remote_write_bytes (targ_addr
, buffer
, targ_len
);
3997 res
= remote_read_bytes (targ_addr
, buffer
, targ_len
);
4004 /* Enable after 4.12. */
4007 remote_search (int len
, char *data
, char *mask
, CORE_ADDR startaddr
,
4008 int increment
, CORE_ADDR lorange
, CORE_ADDR hirange
,
4009 CORE_ADDR
*addr_found
, char *data_found
)
4011 if (increment
== -4 && len
== 4)
4013 long mask_long
, data_long
;
4014 long data_found_long
;
4015 CORE_ADDR addr_we_found
;
4016 char *buf
= alloca (rs
->remote_packet_size
);
4017 long returned_long
[2];
4020 mask_long
= extract_unsigned_integer (mask
, len
);
4021 data_long
= extract_unsigned_integer (data
, len
);
4022 sprintf (buf
, "t%x:%x,%x", startaddr
, data_long
, mask_long
);
4024 getpkt (buf
, (rs
->remote_packet_size
), 0);
4027 /* The stub doesn't support the 't' request. We might want to
4028 remember this fact, but on the other hand the stub could be
4029 switched on us. Maybe we should remember it only until
4030 the next "target remote". */
4031 generic_search (len
, data
, mask
, startaddr
, increment
, lorange
,
4032 hirange
, addr_found
, data_found
);
4037 /* There is no correspondance between what the remote protocol uses
4038 for errors and errno codes. We would like a cleaner way of
4039 representing errors (big enough to include errno codes, bfd_error
4040 codes, and others). But for now just use EIO. */
4041 memory_error (EIO
, startaddr
);
4044 while (*p
!= '\0' && *p
!= ',')
4045 addr_we_found
= (addr_we_found
<< 4) + fromhex (*p
++);
4047 error ("Protocol error: short return for search");
4049 data_found_long
= 0;
4050 while (*p
!= '\0' && *p
!= ',')
4051 data_found_long
= (data_found_long
<< 4) + fromhex (*p
++);
4052 /* Ignore anything after this comma, for future extensions. */
4054 if (addr_we_found
< lorange
|| addr_we_found
>= hirange
)
4060 *addr_found
= addr_we_found
;
4061 *data_found
= store_unsigned_integer (data_we_found
, len
);
4064 generic_search (len
, data
, mask
, startaddr
, increment
, lorange
,
4065 hirange
, addr_found
, data_found
);
4070 remote_files_info (struct target_ops
*ignore
)
4072 puts_filtered ("Debugging a target over a serial line.\n");
4075 /* Stuff for dealing with the packets which are part of this protocol.
4076 See comment at top of file for details. */
4078 /* Read a single character from the remote end, masking it down to 7 bits. */
4081 readchar (int timeout
)
4085 ch
= serial_readchar (remote_desc
, timeout
);
4090 switch ((enum serial_rc
) ch
)
4093 target_mourn_inferior ();
4094 error ("Remote connection closed");
4097 perror_with_name ("Remote communication error");
4099 case SERIAL_TIMEOUT
:
4105 /* Send the command in BUF to the remote machine, and read the reply
4106 into BUF. Report an error if we get an error reply. */
4109 remote_send (char *buf
,
4113 getpkt (buf
, sizeof_buf
, 0);
4116 error ("Remote failure reply: %s", buf
);
4119 /* Display a null-terminated packet on stdout, for debugging, using C
4123 print_packet (char *buf
)
4125 puts_filtered ("\"");
4126 fputstr_filtered (buf
, '"', gdb_stdout
);
4127 puts_filtered ("\"");
4133 return putpkt_binary (buf
, strlen (buf
));
4136 /* Send a packet to the remote machine, with error checking. The data
4137 of the packet is in BUF. The string in BUF can be at most (rs->remote_packet_size) - 5
4138 to account for the $, # and checksum, and for a possible /0 if we are
4139 debugging (remote_debug) and want to print the sent packet as a string */
4142 putpkt_binary (char *buf
, int cnt
)
4144 struct remote_state
*rs
= get_remote_state ();
4146 unsigned char csum
= 0;
4147 char *buf2
= alloca (cnt
+ 6);
4148 long sizeof_junkbuf
= (rs
->remote_packet_size
);
4149 char *junkbuf
= alloca (sizeof_junkbuf
);
4155 /* Copy the packet into buffer BUF2, encapsulating it
4156 and giving it a checksum. */
4161 for (i
= 0; i
< cnt
; i
++)
4167 *p
++ = tohex ((csum
>> 4) & 0xf);
4168 *p
++ = tohex (csum
& 0xf);
4170 /* Send it over and over until we get a positive ack. */
4174 int started_error_output
= 0;
4179 fprintf_unfiltered (gdb_stdlog
, "Sending packet: ");
4180 fputstrn_unfiltered (buf2
, p
- buf2
, 0, gdb_stdlog
);
4181 fprintf_unfiltered (gdb_stdlog
, "...");
4182 gdb_flush (gdb_stdlog
);
4184 if (serial_write (remote_desc
, buf2
, p
- buf2
))
4185 perror_with_name ("putpkt: write failed");
4187 /* read until either a timeout occurs (-2) or '+' is read */
4190 ch
= readchar (remote_timeout
);
4198 case SERIAL_TIMEOUT
:
4200 if (started_error_output
)
4202 putchar_unfiltered ('\n');
4203 started_error_output
= 0;
4212 fprintf_unfiltered (gdb_stdlog
, "Ack\n");
4216 fprintf_unfiltered (gdb_stdlog
, "Nak\n");
4217 case SERIAL_TIMEOUT
:
4221 break; /* Retransmit buffer */
4225 fprintf_unfiltered (gdb_stdlog
, "Packet instead of Ack, ignoring it\n");
4226 /* It's probably an old response, and we're out of sync.
4227 Just gobble up the packet and ignore it. */
4228 read_frame (junkbuf
, sizeof_junkbuf
);
4229 continue; /* Now, go look for + */
4234 if (!started_error_output
)
4236 started_error_output
= 1;
4237 fprintf_unfiltered (gdb_stdlog
, "putpkt: Junk: ");
4239 fputc_unfiltered (ch
& 0177, gdb_stdlog
);
4243 break; /* Here to retransmit */
4247 /* This is wrong. If doing a long backtrace, the user should be
4248 able to get out next time we call QUIT, without anything as
4249 violent as interrupt_query. If we want to provide a way out of
4250 here without getting to the next QUIT, it should be based on
4251 hitting ^C twice as in remote_wait. */
4261 static int remote_cisco_mode
;
4263 /* Come here after finding the start of the frame. Collect the rest
4264 into BUF, verifying the checksum, length, and handling run-length
4265 compression. No more than sizeof_buf-1 characters are read so that
4266 the buffer can be NUL terminated.
4268 Returns -1 on error, number of characters in buffer (ignoring the
4269 trailing NULL) on success. (could be extended to return one of the
4270 SERIAL status indications). */
4273 read_frame (char *buf
,
4285 /* ASSERT (bc < sizeof_buf - 1) - space for trailing NUL */
4286 c
= readchar (remote_timeout
);
4289 case SERIAL_TIMEOUT
:
4291 fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog
);
4295 fputs_filtered ("Saw new packet start in middle of old one\n",
4297 return -1; /* Start a new packet, count retries */
4300 unsigned char pktcsum
;
4306 check_0
= readchar (remote_timeout
);
4308 check_1
= readchar (remote_timeout
);
4310 if (check_0
== SERIAL_TIMEOUT
|| check_1
== SERIAL_TIMEOUT
)
4313 fputs_filtered ("Timeout in checksum, retrying\n", gdb_stdlog
);
4316 else if (check_0
< 0 || check_1
< 0)
4319 fputs_filtered ("Communication error in checksum\n", gdb_stdlog
);
4323 pktcsum
= (fromhex (check_0
) << 4) | fromhex (check_1
);
4324 if (csum
== pktcsum
)
4329 fprintf_filtered (gdb_stdlog
,
4330 "Bad checksum, sentsum=0x%x, csum=0x%x, buf=",
4332 fputs_filtered (buf
, gdb_stdlog
);
4333 fputs_filtered ("\n", gdb_stdlog
);
4335 /* Number of characters in buffer ignoring trailing
4339 case '*': /* Run length encoding */
4344 if (remote_cisco_mode
== 0)
4346 c
= readchar (remote_timeout
);
4348 repeat
= c
- ' ' + 3; /* Compute repeat count */
4352 /* Cisco's run-length encoding variant uses two
4353 hex chars to represent the repeat count. */
4355 c
= readchar (remote_timeout
);
4357 repeat
= fromhex (c
) << 4;
4358 c
= readchar (remote_timeout
);
4360 repeat
+= fromhex (c
);
4363 /* The character before ``*'' is repeated. */
4365 if (repeat
> 0 && repeat
<= 255
4367 && bc
+ repeat
- 1 < sizeof_buf
- 1)
4369 memset (&buf
[bc
], buf
[bc
- 1], repeat
);
4375 printf_filtered ("Repeat count %d too large for buffer: ", repeat
);
4376 puts_filtered (buf
);
4377 puts_filtered ("\n");
4381 if (bc
< sizeof_buf
- 1)
4389 puts_filtered ("Remote packet too long: ");
4390 puts_filtered (buf
);
4391 puts_filtered ("\n");
4398 /* Read a packet from the remote machine, with error checking, and
4399 store it in BUF. If FOREVER, wait forever rather than timing out;
4400 this is used (in synchronous mode) to wait for a target that is is
4401 executing user code to stop. */
4402 /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we
4403 don't have to change all the calls to getpkt to deal with the
4404 return value, because at the moment I don't know what the right
4405 thing to do it for those. */
4413 timed_out
= getpkt_sane (buf
, sizeof_buf
, forever
);
4417 /* Read a packet from the remote machine, with error checking, and
4418 store it in BUF. If FOREVER, wait forever rather than timing out;
4419 this is used (in synchronous mode) to wait for a target that is is
4420 executing user code to stop. If FOREVER == 0, this function is
4421 allowed to time out gracefully and return an indication of this to
4424 getpkt_sane (char *buf
,
4433 strcpy (buf
, "timeout");
4437 timeout
= watchdog
> 0 ? watchdog
: -1;
4441 timeout
= remote_timeout
;
4445 for (tries
= 1; tries
<= MAX_TRIES
; tries
++)
4447 /* This can loop forever if the remote side sends us characters
4448 continuously, but if it pauses, we'll get a zero from readchar
4449 because of timeout. Then we'll count that as a retry. */
4451 /* Note that we will only wait forever prior to the start of a packet.
4452 After that, we expect characters to arrive at a brisk pace. They
4453 should show up within remote_timeout intervals. */
4457 c
= readchar (timeout
);
4459 if (c
== SERIAL_TIMEOUT
)
4461 if (forever
) /* Watchdog went off? Kill the target. */
4464 target_mourn_inferior ();
4465 error ("Watchdog has expired. Target detached.\n");
4468 fputs_filtered ("Timed out.\n", gdb_stdlog
);
4474 /* We've found the start of a packet, now collect the data. */
4476 val
= read_frame (buf
, sizeof_buf
);
4482 fprintf_unfiltered (gdb_stdlog
, "Packet received: ");
4483 fputstr_unfiltered (buf
, 0, gdb_stdlog
);
4484 fprintf_unfiltered (gdb_stdlog
, "\n");
4486 serial_write (remote_desc
, "+", 1);
4490 /* Try the whole thing again. */
4492 serial_write (remote_desc
, "-", 1);
4495 /* We have tried hard enough, and just can't receive the packet. Give up. */
4497 printf_unfiltered ("Ignoring packet error, continuing...\n");
4498 serial_write (remote_desc
, "+", 1);
4505 /* For some mysterious reason, wait_for_inferior calls kill instead of
4506 mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */
4510 target_mourn_inferior ();
4514 /* Use catch_errors so the user can quit from gdb even when we aren't on
4515 speaking terms with the remote system. */
4516 catch_errors ((catch_errors_ftype
*) putpkt
, "k", "", RETURN_MASK_ERROR
);
4518 /* Don't wait for it to die. I'm not really sure it matters whether
4519 we do or not. For the existing stubs, kill is a noop. */
4520 target_mourn_inferior ();
4523 /* Async version of remote_kill. */
4525 remote_async_kill (void)
4527 /* Unregister the file descriptor from the event loop. */
4528 if (target_is_async_p ())
4529 serial_async (remote_desc
, NULL
, 0);
4531 /* For some mysterious reason, wait_for_inferior calls kill instead of
4532 mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */
4536 target_mourn_inferior ();
4540 /* Use catch_errors so the user can quit from gdb even when we aren't on
4541 speaking terms with the remote system. */
4542 catch_errors ((catch_errors_ftype
*) putpkt
, "k", "", RETURN_MASK_ERROR
);
4544 /* Don't wait for it to die. I'm not really sure it matters whether
4545 we do or not. For the existing stubs, kill is a noop. */
4546 target_mourn_inferior ();
4552 remote_mourn_1 (&remote_ops
);
4556 remote_async_mourn (void)
4558 remote_mourn_1 (&remote_async_ops
);
4562 extended_remote_mourn (void)
4564 /* We do _not_ want to mourn the target like this; this will
4565 remove the extended remote target from the target stack,
4566 and the next time the user says "run" it'll fail.
4568 FIXME: What is the right thing to do here? */
4570 remote_mourn_1 (&extended_remote_ops
);
4574 /* Worker function for remote_mourn. */
4576 remote_mourn_1 (struct target_ops
*target
)
4578 unpush_target (target
);
4579 generic_mourn_inferior ();
4582 /* In the extended protocol we want to be able to do things like
4583 "run" and have them basically work as expected. So we need
4584 a special create_inferior function.
4586 FIXME: One day add support for changing the exec file
4587 we're debugging, arguments and an environment. */
4590 extended_remote_create_inferior (char *exec_file
, char *args
, char **env
)
4592 /* Rip out the breakpoints; we'll reinsert them after restarting
4593 the remote server. */
4594 remove_breakpoints ();
4596 /* Now restart the remote server. */
4597 extended_remote_restart ();
4599 /* Now put the breakpoints back in. This way we're safe if the
4600 restart function works via a unix fork on the remote side. */
4601 insert_breakpoints ();
4603 /* Clean up from the last time we were running. */
4604 clear_proceed_status ();
4606 /* Let the remote process run. */
4607 proceed (-1, TARGET_SIGNAL_0
, 0);
4610 /* Async version of extended_remote_create_inferior. */
4612 extended_remote_async_create_inferior (char *exec_file
, char *args
, char **env
)
4614 /* Rip out the breakpoints; we'll reinsert them after restarting
4615 the remote server. */
4616 remove_breakpoints ();
4618 /* If running asynchronously, register the target file descriptor
4619 with the event loop. */
4620 if (event_loop_p
&& target_can_async_p ())
4621 target_async (inferior_event_handler
, 0);
4623 /* Now restart the remote server. */
4624 extended_remote_restart ();
4626 /* Now put the breakpoints back in. This way we're safe if the
4627 restart function works via a unix fork on the remote side. */
4628 insert_breakpoints ();
4630 /* Clean up from the last time we were running. */
4631 clear_proceed_status ();
4633 /* Let the remote process run. */
4634 proceed (-1, TARGET_SIGNAL_0
, 0);
4638 /* On some machines, e.g. 68k, we may use a different breakpoint
4639 instruction than other targets; in those use
4640 DEPRECATED_REMOTE_BREAKPOINT instead of just BREAKPOINT_FROM_PC.
4641 Also, bi-endian targets may define
4642 DEPRECATED_LITTLE_REMOTE_BREAKPOINT and
4643 DEPRECATED_BIG_REMOTE_BREAKPOINT. If none of these are defined, we
4644 just call the standard routines that are in mem-break.c. */
4646 /* NOTE: cagney/2003-06-08: This is silly. A remote and simulator
4647 target should use an identical BREAKPOINT_FROM_PC. As for native,
4648 the ARCH-OS-tdep.c code can override the default. */
4650 #if defined (DEPRECATED_LITTLE_REMOTE_BREAKPOINT) && defined (DEPRECATED_BIG_REMOTE_BREAKPOINT) && !defined(DEPRECATED_REMOTE_BREAKPOINT)
4651 #define DEPRECATED_REMOTE_BREAKPOINT
4654 #ifdef DEPRECATED_REMOTE_BREAKPOINT
4656 /* If the target isn't bi-endian, just pretend it is. */
4657 #if !defined (DEPRECATED_LITTLE_REMOTE_BREAKPOINT) && !defined (DEPRECATED_BIG_REMOTE_BREAKPOINT)
4658 #define DEPRECATED_LITTLE_REMOTE_BREAKPOINT DEPRECATED_REMOTE_BREAKPOINT
4659 #define DEPRECATED_BIG_REMOTE_BREAKPOINT DEPRECATED_REMOTE_BREAKPOINT
4662 static unsigned char big_break_insn
[] = DEPRECATED_BIG_REMOTE_BREAKPOINT
;
4663 static unsigned char little_break_insn
[] = DEPRECATED_LITTLE_REMOTE_BREAKPOINT
;
4665 #endif /* DEPRECATED_REMOTE_BREAKPOINT */
4667 /* Insert a breakpoint on targets that don't have any better
4668 breakpoint support. We read the contents of the target location
4669 and stash it, then overwrite it with a breakpoint instruction.
4670 ADDR is the target location in the target machine. CONTENTS_CACHE
4671 is a pointer to memory allocated for saving the target contents.
4672 It is guaranteed by the caller to be long enough to save the number
4673 of bytes returned by BREAKPOINT_FROM_PC. */
4676 remote_insert_breakpoint (CORE_ADDR addr
, char *contents_cache
)
4678 struct remote_state
*rs
= get_remote_state ();
4679 #ifdef DEPRECATED_REMOTE_BREAKPOINT
4684 /* Try the "Z" s/w breakpoint packet if it is not already disabled.
4685 If it succeeds, then set the support to PACKET_ENABLE. If it
4686 fails, and the user has explicitly requested the Z support then
4687 report an error, otherwise, mark it disabled and go on. */
4689 if (remote_protocol_Z
[Z_PACKET_SOFTWARE_BP
].support
!= PACKET_DISABLE
)
4691 char *buf
= alloca (rs
->remote_packet_size
);
4694 addr
= remote_address_masked (addr
);
4698 p
+= hexnumstr (p
, (ULONGEST
) addr
);
4699 BREAKPOINT_FROM_PC (&addr
, &bp_size
);
4700 sprintf (p
, ",%d", bp_size
);
4703 getpkt (buf
, (rs
->remote_packet_size
), 0);
4705 switch (packet_ok (buf
, &remote_protocol_Z
[Z_PACKET_SOFTWARE_BP
]))
4711 case PACKET_UNKNOWN
:
4716 #ifdef DEPRECATED_REMOTE_BREAKPOINT
4717 val
= target_read_memory (addr
, contents_cache
, sizeof big_break_insn
);
4721 if (TARGET_BYTE_ORDER
== BFD_ENDIAN_BIG
)
4722 val
= target_write_memory (addr
, (char *) big_break_insn
,
4723 sizeof big_break_insn
);
4725 val
= target_write_memory (addr
, (char *) little_break_insn
,
4726 sizeof little_break_insn
);
4731 return memory_insert_breakpoint (addr
, contents_cache
);
4732 #endif /* DEPRECATED_REMOTE_BREAKPOINT */
4736 remote_remove_breakpoint (CORE_ADDR addr
, char *contents_cache
)
4738 struct remote_state
*rs
= get_remote_state ();
4741 if (remote_protocol_Z
[Z_PACKET_SOFTWARE_BP
].support
!= PACKET_DISABLE
)
4743 char *buf
= alloca (rs
->remote_packet_size
);
4750 addr
= remote_address_masked (addr
);
4751 p
+= hexnumstr (p
, (ULONGEST
) addr
);
4752 BREAKPOINT_FROM_PC (&addr
, &bp_size
);
4753 sprintf (p
, ",%d", bp_size
);
4756 getpkt (buf
, (rs
->remote_packet_size
), 0);
4758 return (buf
[0] == 'E');
4761 #ifdef DEPRECATED_REMOTE_BREAKPOINT
4762 return target_write_memory (addr
, contents_cache
, sizeof big_break_insn
);
4764 return memory_remove_breakpoint (addr
, contents_cache
);
4765 #endif /* DEPRECATED_REMOTE_BREAKPOINT */
4769 watchpoint_to_Z_packet (int type
)
4783 internal_error (__FILE__
, __LINE__
,
4784 "hw_bp_to_z: bad watchpoint type %d", type
);
4789 remote_insert_watchpoint (CORE_ADDR addr
, int len
, int type
)
4791 struct remote_state
*rs
= get_remote_state ();
4792 char *buf
= alloca (rs
->remote_packet_size
);
4794 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
4796 if (remote_protocol_Z
[packet
].support
== PACKET_DISABLE
)
4797 error ("Can't set hardware watchpoints without the '%s' (%s) packet\n",
4798 remote_protocol_Z
[packet
].name
,
4799 remote_protocol_Z
[packet
].title
);
4801 sprintf (buf
, "Z%x,", packet
);
4802 p
= strchr (buf
, '\0');
4803 addr
= remote_address_masked (addr
);
4804 p
+= hexnumstr (p
, (ULONGEST
) addr
);
4805 sprintf (p
, ",%x", len
);
4808 getpkt (buf
, (rs
->remote_packet_size
), 0);
4810 switch (packet_ok (buf
, &remote_protocol_Z
[packet
]))
4813 case PACKET_UNKNOWN
:
4818 internal_error (__FILE__
, __LINE__
,
4819 "remote_insert_watchpoint: reached end of function");
4824 remote_remove_watchpoint (CORE_ADDR addr
, int len
, int type
)
4826 struct remote_state
*rs
= get_remote_state ();
4827 char *buf
= alloca (rs
->remote_packet_size
);
4829 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
4831 if (remote_protocol_Z
[packet
].support
== PACKET_DISABLE
)
4832 error ("Can't clear hardware watchpoints without the '%s' (%s) packet\n",
4833 remote_protocol_Z
[packet
].name
,
4834 remote_protocol_Z
[packet
].title
);
4836 sprintf (buf
, "z%x,", packet
);
4837 p
= strchr (buf
, '\0');
4838 addr
= remote_address_masked (addr
);
4839 p
+= hexnumstr (p
, (ULONGEST
) addr
);
4840 sprintf (p
, ",%x", len
);
4842 getpkt (buf
, (rs
->remote_packet_size
), 0);
4844 switch (packet_ok (buf
, &remote_protocol_Z
[packet
]))
4847 case PACKET_UNKNOWN
:
4852 internal_error (__FILE__
, __LINE__
,
4853 "remote_remove_watchpoint: reached end of function");
4857 int remote_hw_watchpoint_limit
= -1;
4858 int remote_hw_breakpoint_limit
= -1;
4861 remote_check_watch_resources (int type
, int cnt
, int ot
)
4863 if (type
== bp_hardware_breakpoint
)
4865 if (remote_hw_breakpoint_limit
== 0)
4867 else if (remote_hw_breakpoint_limit
< 0)
4869 else if (cnt
<= remote_hw_breakpoint_limit
)
4874 if (remote_hw_watchpoint_limit
== 0)
4876 else if (remote_hw_watchpoint_limit
< 0)
4880 else if (cnt
<= remote_hw_watchpoint_limit
)
4887 remote_stopped_by_watchpoint (void)
4889 return remote_stopped_by_watchpoint_p
;
4893 remote_stopped_data_address (void)
4895 if (remote_stopped_by_watchpoint ())
4896 return remote_watch_data_address
;
4897 return (CORE_ADDR
)0;
4902 remote_insert_hw_breakpoint (CORE_ADDR addr
, char *shadow
)
4905 struct remote_state
*rs
= get_remote_state ();
4906 char *buf
= alloca (rs
->remote_packet_size
);
4909 /* The length field should be set to the size of a breakpoint
4912 BREAKPOINT_FROM_PC (&addr
, &len
);
4914 if (remote_protocol_Z
[Z_PACKET_HARDWARE_BP
].support
== PACKET_DISABLE
)
4915 error ("Can't set hardware breakpoint without the '%s' (%s) packet\n",
4916 remote_protocol_Z
[Z_PACKET_HARDWARE_BP
].name
,
4917 remote_protocol_Z
[Z_PACKET_HARDWARE_BP
].title
);
4923 addr
= remote_address_masked (addr
);
4924 p
+= hexnumstr (p
, (ULONGEST
) addr
);
4925 sprintf (p
, ",%x", len
);
4928 getpkt (buf
, (rs
->remote_packet_size
), 0);
4930 switch (packet_ok (buf
, &remote_protocol_Z
[Z_PACKET_HARDWARE_BP
]))
4933 case PACKET_UNKNOWN
:
4938 internal_error (__FILE__
, __LINE__
,
4939 "remote_insert_hw_breakpoint: reached end of function");
4944 remote_remove_hw_breakpoint (CORE_ADDR addr
, char *shadow
)
4947 struct remote_state
*rs
= get_remote_state ();
4948 char *buf
= alloca (rs
->remote_packet_size
);
4951 /* The length field should be set to the size of a breakpoint
4954 BREAKPOINT_FROM_PC (&addr
, &len
);
4956 if (remote_protocol_Z
[Z_PACKET_HARDWARE_BP
].support
== PACKET_DISABLE
)
4957 error ("Can't clear hardware breakpoint without the '%s' (%s) packet\n",
4958 remote_protocol_Z
[Z_PACKET_HARDWARE_BP
].name
,
4959 remote_protocol_Z
[Z_PACKET_HARDWARE_BP
].title
);
4965 addr
= remote_address_masked (addr
);
4966 p
+= hexnumstr (p
, (ULONGEST
) addr
);
4967 sprintf (p
, ",%x", len
);
4970 getpkt (buf
, (rs
->remote_packet_size
), 0);
4972 switch (packet_ok (buf
, &remote_protocol_Z
[Z_PACKET_HARDWARE_BP
]))
4975 case PACKET_UNKNOWN
:
4980 internal_error (__FILE__
, __LINE__
,
4981 "remote_remove_hw_breakpoint: reached end of function");
4984 /* Some targets are only capable of doing downloads, and afterwards
4985 they switch to the remote serial protocol. This function provides
4986 a clean way to get from the download target to the remote target.
4987 It's basically just a wrapper so that we don't have to expose any
4988 of the internal workings of remote.c.
4990 Prior to calling this routine, you should shutdown the current
4991 target code, else you will get the "A program is being debugged
4992 already..." message. Usually a call to pop_target() suffices. */
4995 push_remote_target (char *name
, int from_tty
)
4997 printf_filtered ("Switching to remote protocol\n");
4998 remote_open (name
, from_tty
);
5001 /* Table used by the crc32 function to calcuate the checksum. */
5003 static unsigned long crc32_table
[256] =
5006 static unsigned long
5007 crc32 (unsigned char *buf
, int len
, unsigned int crc
)
5009 if (!crc32_table
[1])
5011 /* Initialize the CRC table and the decoding table. */
5015 for (i
= 0; i
< 256; i
++)
5017 for (c
= i
<< 24, j
= 8; j
> 0; --j
)
5018 c
= c
& 0x80000000 ? (c
<< 1) ^ 0x04c11db7 : (c
<< 1);
5025 crc
= (crc
<< 8) ^ crc32_table
[((crc
>> 24) ^ *buf
) & 255];
5031 /* compare-sections command
5033 With no arguments, compares each loadable section in the exec bfd
5034 with the same memory range on the target, and reports mismatches.
5035 Useful for verifying the image on the target against the exec file.
5036 Depends on the target understanding the new "qCRC:" request. */
5038 /* FIXME: cagney/1999-10-26: This command should be broken down into a
5039 target method (target verify memory) and generic version of the
5040 actual command. This will allow other high-level code (especially
5041 generic_load()) to make use of this target functionality. */
5044 compare_sections_command (char *args
, int from_tty
)
5046 struct remote_state
*rs
= get_remote_state ();
5048 unsigned long host_crc
, target_crc
;
5049 extern bfd
*exec_bfd
;
5050 struct cleanup
*old_chain
;
5053 const char *sectname
;
5054 char *buf
= alloca (rs
->remote_packet_size
);
5061 error ("command cannot be used without an exec file");
5062 if (!current_target
.to_shortname
||
5063 strcmp (current_target
.to_shortname
, "remote") != 0)
5064 error ("command can only be used with remote target");
5066 for (s
= exec_bfd
->sections
; s
; s
= s
->next
)
5068 if (!(s
->flags
& SEC_LOAD
))
5069 continue; /* skip non-loadable section */
5071 size
= bfd_get_section_size_before_reloc (s
);
5073 continue; /* skip zero-length section */
5075 sectname
= bfd_get_section_name (exec_bfd
, s
);
5076 if (args
&& strcmp (args
, sectname
) != 0)
5077 continue; /* not the section selected by user */
5079 matched
= 1; /* do this section */
5081 /* FIXME: assumes lma can fit into long */
5082 sprintf (buf
, "qCRC:%lx,%lx", (long) lma
, (long) size
);
5085 /* be clever; compute the host_crc before waiting for target reply */
5086 sectdata
= xmalloc (size
);
5087 old_chain
= make_cleanup (xfree
, sectdata
);
5088 bfd_get_section_contents (exec_bfd
, s
, sectdata
, 0, size
);
5089 host_crc
= crc32 ((unsigned char *) sectdata
, size
, 0xffffffff);
5091 getpkt (buf
, (rs
->remote_packet_size
), 0);
5093 error ("target memory fault, section %s, range 0x%s -- 0x%s",
5094 sectname
, paddr (lma
), paddr (lma
+ size
));
5096 error ("remote target does not support this operation");
5098 for (target_crc
= 0, tmp
= &buf
[1]; *tmp
; tmp
++)
5099 target_crc
= target_crc
* 16 + fromhex (*tmp
);
5101 printf_filtered ("Section %s, range 0x%s -- 0x%s: ",
5102 sectname
, paddr (lma
), paddr (lma
+ size
));
5103 if (host_crc
== target_crc
)
5104 printf_filtered ("matched.\n");
5107 printf_filtered ("MIS-MATCHED!\n");
5111 do_cleanups (old_chain
);
5114 warning ("One or more sections of the remote executable does not match\n\
5115 the loaded file\n");
5116 if (args
&& !matched
)
5117 printf_filtered ("No loaded section named '%s'.\n", args
);
5121 remote_query (int query_type
, char *buf
, char *outbuf
, int *bufsiz
)
5123 struct remote_state
*rs
= get_remote_state ();
5125 char *buf2
= alloca (rs
->remote_packet_size
);
5126 char *p2
= &buf2
[0];
5129 error ("null pointer to remote bufer size specified");
5131 /* minimum outbuf size is (rs->remote_packet_size) - if bufsiz is not large enough let
5132 the caller know and return what the minimum size is */
5133 /* Note: a zero bufsiz can be used to query the minimum buffer size */
5134 if (*bufsiz
< (rs
->remote_packet_size
))
5136 *bufsiz
= (rs
->remote_packet_size
);
5140 /* except for querying the minimum buffer size, target must be open */
5142 error ("remote query is only available after target open");
5144 /* we only take uppercase letters as query types, at least for now */
5145 if ((query_type
< 'A') || (query_type
> 'Z'))
5146 error ("invalid remote query type");
5149 error ("null remote query specified");
5152 error ("remote query requires a buffer to receive data");
5159 /* we used one buffer char for the remote protocol q command and another
5160 for the query type. As the remote protocol encapsulation uses 4 chars
5161 plus one extra in case we are debugging (remote_debug),
5162 we have PBUFZIZ - 7 left to pack the query string */
5164 while (buf
[i
] && (i
< ((rs
->remote_packet_size
) - 8)))
5166 /* bad caller may have sent forbidden characters */
5167 if ((!isprint (buf
[i
])) || (buf
[i
] == '$') || (buf
[i
] == '#'))
5168 error ("illegal characters in query string");
5176 error ("query larger than available buffer");
5182 getpkt (outbuf
, *bufsiz
, 0);
5188 remote_rcmd (char *command
,
5189 struct ui_file
*outbuf
)
5191 struct remote_state
*rs
= get_remote_state ();
5193 char *buf
= alloca (rs
->remote_packet_size
);
5197 error ("remote rcmd is only available after target open");
5199 /* Send a NULL command across as an empty command */
5200 if (command
== NULL
)
5203 /* The query prefix */
5204 strcpy (buf
, "qRcmd,");
5205 p
= strchr (buf
, '\0');
5207 if ((strlen (buf
) + strlen (command
) * 2 + 8/*misc*/) > (rs
->remote_packet_size
))
5208 error ("\"monitor\" command ``%s'' is too long\n", command
);
5210 /* Encode the actual command */
5211 bin2hex (command
, p
, 0);
5213 if (putpkt (buf
) < 0)
5214 error ("Communication problem with target\n");
5216 /* get/display the response */
5219 /* XXX - see also tracepoint.c:remote_get_noisy_reply() */
5221 getpkt (buf
, (rs
->remote_packet_size
), 0);
5223 error ("Target does not support this command\n");
5224 if (buf
[0] == 'O' && buf
[1] != 'K')
5226 remote_console_output (buf
+ 1); /* 'O' message from stub */
5229 if (strcmp (buf
, "OK") == 0)
5231 if (strlen (buf
) == 3 && buf
[0] == 'E'
5232 && isdigit (buf
[1]) && isdigit (buf
[2]))
5234 error ("Protocol error with Rcmd");
5236 for (p
= buf
; p
[0] != '\0' && p
[1] != '\0'; p
+= 2)
5238 char c
= (fromhex (p
[0]) << 4) + fromhex (p
[1]);
5239 fputc_unfiltered (c
, outbuf
);
5246 packet_command (char *args
, int from_tty
)
5248 struct remote_state
*rs
= get_remote_state ();
5249 char *buf
= alloca (rs
->remote_packet_size
);
5252 error ("command can only be used with remote target");
5255 error ("remote-packet command requires packet text as argument");
5257 puts_filtered ("sending: ");
5258 print_packet (args
);
5259 puts_filtered ("\n");
5262 getpkt (buf
, (rs
->remote_packet_size
), 0);
5263 puts_filtered ("received: ");
5265 puts_filtered ("\n");
5269 /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------------- */
5271 static void display_thread_info (struct gdb_ext_thread_info
*info
);
5273 static void threadset_test_cmd (char *cmd
, int tty
);
5275 static void threadalive_test (char *cmd
, int tty
);
5277 static void threadlist_test_cmd (char *cmd
, int tty
);
5279 int get_and_display_threadinfo (threadref
* ref
);
5281 static void threadinfo_test_cmd (char *cmd
, int tty
);
5283 static int thread_display_step (threadref
* ref
, void *context
);
5285 static void threadlist_update_test_cmd (char *cmd
, int tty
);
5287 static void init_remote_threadtests (void);
5289 #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid */
5292 threadset_test_cmd (char *cmd
, int tty
)
5294 int sample_thread
= SAMPLE_THREAD
;
5296 printf_filtered ("Remote threadset test\n");
5297 set_thread (sample_thread
, 1);
5302 threadalive_test (char *cmd
, int tty
)
5304 int sample_thread
= SAMPLE_THREAD
;
5306 if (remote_thread_alive (pid_to_ptid (sample_thread
)))
5307 printf_filtered ("PASS: Thread alive test\n");
5309 printf_filtered ("FAIL: Thread alive test\n");
5312 void output_threadid (char *title
, threadref
* ref
);
5315 output_threadid (char *title
, threadref
*ref
)
5319 pack_threadid (&hexid
[0], ref
); /* Convert threead id into hex */
5321 printf_filtered ("%s %s\n", title
, (&hexid
[0]));
5325 threadlist_test_cmd (char *cmd
, int tty
)
5328 threadref nextthread
;
5329 int done
, result_count
;
5330 threadref threadlist
[3];
5332 printf_filtered ("Remote Threadlist test\n");
5333 if (!remote_get_threadlist (startflag
, &nextthread
, 3, &done
,
5334 &result_count
, &threadlist
[0]))
5335 printf_filtered ("FAIL: threadlist test\n");
5338 threadref
*scan
= threadlist
;
5339 threadref
*limit
= scan
+ result_count
;
5341 while (scan
< limit
)
5342 output_threadid (" thread ", scan
++);
5347 display_thread_info (struct gdb_ext_thread_info
*info
)
5349 output_threadid ("Threadid: ", &info
->threadid
);
5350 printf_filtered ("Name: %s\n ", info
->shortname
);
5351 printf_filtered ("State: %s\n", info
->display
);
5352 printf_filtered ("other: %s\n\n", info
->more_display
);
5356 get_and_display_threadinfo (threadref
*ref
)
5360 struct gdb_ext_thread_info threadinfo
;
5362 set
= TAG_THREADID
| TAG_EXISTS
| TAG_THREADNAME
5363 | TAG_MOREDISPLAY
| TAG_DISPLAY
;
5364 if (0 != (result
= remote_get_threadinfo (ref
, set
, &threadinfo
)))
5365 display_thread_info (&threadinfo
);
5370 threadinfo_test_cmd (char *cmd
, int tty
)
5372 int athread
= SAMPLE_THREAD
;
5376 int_to_threadref (&thread
, athread
);
5377 printf_filtered ("Remote Threadinfo test\n");
5378 if (!get_and_display_threadinfo (&thread
))
5379 printf_filtered ("FAIL cannot get thread info\n");
5383 thread_display_step (threadref
*ref
, void *context
)
5385 /* output_threadid(" threadstep ",ref); *//* simple test */
5386 return get_and_display_threadinfo (ref
);
5390 threadlist_update_test_cmd (char *cmd
, int tty
)
5392 printf_filtered ("Remote Threadlist update test\n");
5393 remote_threadlist_iterator (thread_display_step
, 0, CRAZY_MAX_THREADS
);
5397 init_remote_threadtests (void)
5399 add_com ("tlist", class_obscure
, threadlist_test_cmd
,
5400 "Fetch and print the remote list of thread identifiers, one pkt only");
5401 add_com ("tinfo", class_obscure
, threadinfo_test_cmd
,
5402 "Fetch and display info about one thread");
5403 add_com ("tset", class_obscure
, threadset_test_cmd
,
5404 "Test setting to a different thread");
5405 add_com ("tupd", class_obscure
, threadlist_update_test_cmd
,
5406 "Iterate through updating all remote thread info");
5407 add_com ("talive", class_obscure
, threadalive_test
,
5408 " Remote thread alive test ");
5413 /* Convert a thread ID to a string. Returns the string in a static
5417 remote_pid_to_str (ptid_t ptid
)
5419 static char buf
[30];
5421 sprintf (buf
, "Thread %d", PIDGET (ptid
));
5426 init_remote_ops (void)
5428 remote_ops
.to_shortname
= "remote";
5429 remote_ops
.to_longname
= "Remote serial target in gdb-specific protocol";
5431 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
5432 Specify the serial device it is connected to\n\
5433 (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).";
5434 remote_ops
.to_open
= remote_open
;
5435 remote_ops
.to_close
= remote_close
;
5436 remote_ops
.to_detach
= remote_detach
;
5437 remote_ops
.to_disconnect
= remote_disconnect
;
5438 remote_ops
.to_resume
= remote_resume
;
5439 remote_ops
.to_wait
= remote_wait
;
5440 remote_ops
.to_fetch_registers
= remote_fetch_registers
;
5441 remote_ops
.to_store_registers
= remote_store_registers
;
5442 remote_ops
.to_prepare_to_store
= remote_prepare_to_store
;
5443 remote_ops
.to_xfer_memory
= remote_xfer_memory
;
5444 remote_ops
.to_files_info
= remote_files_info
;
5445 remote_ops
.to_insert_breakpoint
= remote_insert_breakpoint
;
5446 remote_ops
.to_remove_breakpoint
= remote_remove_breakpoint
;
5447 remote_ops
.to_stopped_by_watchpoint
= remote_stopped_by_watchpoint
;
5448 remote_ops
.to_stopped_data_address
= remote_stopped_data_address
;
5449 remote_ops
.to_can_use_hw_breakpoint
= remote_check_watch_resources
;
5450 remote_ops
.to_insert_hw_breakpoint
= remote_insert_hw_breakpoint
;
5451 remote_ops
.to_remove_hw_breakpoint
= remote_remove_hw_breakpoint
;
5452 remote_ops
.to_insert_watchpoint
= remote_insert_watchpoint
;
5453 remote_ops
.to_remove_watchpoint
= remote_remove_watchpoint
;
5454 remote_ops
.to_kill
= remote_kill
;
5455 remote_ops
.to_load
= generic_load
;
5456 remote_ops
.to_mourn_inferior
= remote_mourn
;
5457 remote_ops
.to_thread_alive
= remote_thread_alive
;
5458 remote_ops
.to_find_new_threads
= remote_threads_info
;
5459 remote_ops
.to_pid_to_str
= remote_pid_to_str
;
5460 remote_ops
.to_extra_thread_info
= remote_threads_extra_info
;
5461 remote_ops
.to_stop
= remote_stop
;
5462 remote_ops
.to_query
= remote_query
;
5463 remote_ops
.to_rcmd
= remote_rcmd
;
5464 remote_ops
.to_stratum
= process_stratum
;
5465 remote_ops
.to_has_all_memory
= 1;
5466 remote_ops
.to_has_memory
= 1;
5467 remote_ops
.to_has_stack
= 1;
5468 remote_ops
.to_has_registers
= 1;
5469 remote_ops
.to_has_execution
= 1;
5470 remote_ops
.to_has_thread_control
= tc_schedlock
; /* can lock scheduler */
5471 remote_ops
.to_magic
= OPS_MAGIC
;
5474 /* Set up the extended remote vector by making a copy of the standard
5475 remote vector and adding to it. */
5478 init_extended_remote_ops (void)
5480 extended_remote_ops
= remote_ops
;
5482 extended_remote_ops
.to_shortname
= "extended-remote";
5483 extended_remote_ops
.to_longname
=
5484 "Extended remote serial target in gdb-specific protocol";
5485 extended_remote_ops
.to_doc
=
5486 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
5487 Specify the serial device it is connected to (e.g. /dev/ttya).",
5488 extended_remote_ops
.to_open
= extended_remote_open
;
5489 extended_remote_ops
.to_create_inferior
= extended_remote_create_inferior
;
5490 extended_remote_ops
.to_mourn_inferior
= extended_remote_mourn
;
5494 * Command: info remote-process
5496 * This implements Cisco's version of the "info proc" command.
5498 * This query allows the target stub to return an arbitrary string
5499 * (or strings) giving arbitrary information about the target process.
5500 * This is optional; the target stub isn't required to implement it.
5502 * Syntax: qfProcessInfo request first string
5503 * qsProcessInfo request subsequent string
5504 * reply: 'O'<hex-encoded-string>
5505 * 'l' last reply (empty)
5509 remote_info_process (char *args
, int from_tty
)
5511 struct remote_state
*rs
= get_remote_state ();
5512 char *buf
= alloca (rs
->remote_packet_size
);
5514 if (remote_desc
== 0)
5515 error ("Command can only be used when connected to the remote target.");
5517 putpkt ("qfProcessInfo");
5518 getpkt (buf
, (rs
->remote_packet_size
), 0);
5520 return; /* Silently: target does not support this feature. */
5523 error ("info proc: target error.");
5525 while (buf
[0] == 'O') /* Capitol-O packet */
5527 remote_console_output (&buf
[1]);
5528 putpkt ("qsProcessInfo");
5529 getpkt (buf
, (rs
->remote_packet_size
), 0);
5538 remote_cisco_open (char *name
, int from_tty
)
5542 error ("To open a remote debug connection, you need to specify what \n"
5543 "device is attached to the remote system (e.g. host:port).");
5545 /* See FIXME above */
5546 wait_forever_enabled_p
= 1;
5548 target_preopen (from_tty
);
5550 unpush_target (&remote_cisco_ops
);
5552 remote_desc
= remote_serial_open (name
);
5554 perror_with_name (name
);
5557 * If a baud rate was specified on the gdb command line it will
5558 * be greater than the initial value of -1. If it is, use it otherwise
5562 baud_rate
= (baud_rate
> 0) ? baud_rate
: 9600;
5563 if (serial_setbaudrate (remote_desc
, baud_rate
))
5565 serial_close (remote_desc
);
5566 perror_with_name (name
);
5569 serial_raw (remote_desc
);
5571 /* If there is something sitting in the buffer we might take it as a
5572 response to a command, which would be bad. */
5573 serial_flush_input (remote_desc
);
5577 puts_filtered ("Remote debugging using ");
5578 puts_filtered (name
);
5579 puts_filtered ("\n");
5582 remote_cisco_mode
= 1;
5584 push_target (&remote_cisco_ops
); /* Switch to using cisco target now */
5586 init_all_packet_configs ();
5588 general_thread
= -2;
5589 continue_thread
= -2;
5591 /* Probe for ability to use "ThreadInfo" query, as required. */
5592 use_threadinfo_query
= 1;
5593 use_threadextra_query
= 1;
5595 /* Without this, some commands which require an active target (such
5596 as kill) won't work. This variable serves (at least) double duty
5597 as both the pid of the target process (if it has such), and as a
5598 flag indicating that a target is active. These functions should
5599 be split out into seperate variables, especially since GDB will
5600 someday have a notion of debugging several processes. */
5601 inferior_ptid
= pid_to_ptid (MAGIC_NULL_PID
);
5603 /* Start the remote connection; if error, discard this target. See
5604 the comments in remote_open_1() for further details such as the
5605 need to re-throw the exception. */
5606 ex
= catch_exceptions (uiout
,
5607 remote_start_remote_dummy
, NULL
,
5608 "Couldn't establish connection to remote"
5614 throw_exception (ex
);
5619 remote_cisco_close (int quitting
)
5621 remote_cisco_mode
= 0;
5622 remote_close (quitting
);
5626 remote_cisco_mourn (void)
5628 remote_mourn_1 (&remote_cisco_ops
);
5640 /* Shared between readsocket() and readtty(). The size is arbitrary,
5641 however all targets are known to support a 400 character packet. */
5642 static char tty_input
[400];
5644 static int escape_count
;
5645 static int echo_check
;
5646 extern int quit_flag
;
5653 /* Loop until the socket doesn't have any more data */
5655 while ((data
= readchar (0)) >= 0)
5657 /* Check for the escape sequence */
5660 /* If this is the fourth escape, get out */
5661 if (++escape_count
== 4)
5666 { /* This is a '|', but not the fourth in a row.
5667 Continue without echoing it. If it isn't actually
5668 one of four in a row, it'll be echoed later. */
5675 /* Ensure any pending '|'s are flushed. */
5677 for (; escape_count
> 0; escape_count
--)
5681 if (data
== '\r') /* If this is a return character, */
5682 continue; /* - just supress it. */
5684 if (echo_check
!= -1) /* Check for echo of user input. */
5686 if (tty_input
[echo_check
] == data
)
5688 gdb_assert (echo_check
<= sizeof (tty_input
));
5689 echo_check
++; /* Character matched user input: */
5690 continue; /* Continue without echoing it. */
5692 else if ((data
== '\n') && (tty_input
[echo_check
] == '\r'))
5693 { /* End of the line (and of echo checking). */
5694 echo_check
= -1; /* No more echo supression */
5695 continue; /* Continue without echoing. */
5698 { /* Failed check for echo of user input.
5699 We now have some suppressed output to flush! */
5702 for (j
= 0; j
< echo_check
; j
++)
5703 putchar (tty_input
[j
]);
5707 putchar (data
); /* Default case: output the char. */
5710 if (data
== SERIAL_TIMEOUT
) /* Timeout returned from readchar. */
5711 return READ_MORE
; /* Try to read some more */
5713 return FATAL_ERROR
; /* Trouble, bail out */
5721 /* First, read a buffer full from the terminal */
5722 tty_bytecount
= read (fileno (stdin
), tty_input
, sizeof (tty_input
) - 1);
5723 if (tty_bytecount
== -1)
5725 perror ("readtty: read failed");
5729 /* Remove a quoted newline. */
5730 if (tty_input
[tty_bytecount
- 1] == '\n' &&
5731 tty_input
[tty_bytecount
- 2] == '\\') /* line ending in backslash */
5733 tty_input
[--tty_bytecount
] = 0; /* remove newline */
5734 tty_input
[--tty_bytecount
] = 0; /* remove backslash */
5737 /* Turn trailing newlines into returns */
5738 if (tty_input
[tty_bytecount
- 1] == '\n')
5739 tty_input
[tty_bytecount
- 1] = '\r';
5741 /* If the line consists of a ~, enter debugging mode. */
5742 if ((tty_input
[0] == '~') && (tty_bytecount
== 2))
5745 /* Make this a zero terminated string and write it out */
5746 tty_input
[tty_bytecount
] = 0;
5747 if (serial_write (remote_desc
, tty_input
, tty_bytecount
))
5749 perror_with_name ("readtty: write failed");
5759 fd_set input
; /* file descriptors for select */
5760 int tablesize
; /* max number of FDs for select */
5767 tablesize
= 8 * sizeof (input
);
5771 /* Check for anything from our socket - doesn't block. Note that
5772 this must be done *before* the select as there may be
5773 buffered I/O waiting to be processed. */
5775 if ((status
= readsocket ()) == FATAL_ERROR
)
5777 error ("Debugging terminated by communications error");
5779 else if (status
!= READ_MORE
)
5784 fflush (stdout
); /* Flush output before blocking */
5786 /* Now block on more socket input or TTY input */
5789 FD_SET (fileno (stdin
), &input
);
5790 FD_SET (deprecated_serial_fd (remote_desc
), &input
);
5792 status
= select (tablesize
, &input
, 0, 0, 0);
5793 if ((status
== -1) && (errno
!= EINTR
))
5795 error ("Communications error on select %d", errno
);
5798 /* Handle Control-C typed */
5802 if ((++quit_count
) == 2)
5804 if (query ("Interrupt GDB? "))
5806 printf_filtered ("Interrupted by user.\n");
5807 throw_exception (RETURN_QUIT
);
5814 serial_send_break (remote_desc
);
5816 serial_write (remote_desc
, "\003", 1);
5821 /* Handle console input */
5823 if (FD_ISSET (fileno (stdin
), &input
))
5827 status
= readtty ();
5828 if (status
== READ_MORE
)
5831 return status
; /* telnet session ended */
5837 remote_cisco_wait (ptid_t ptid
, struct target_waitstatus
*status
)
5839 if (minitelnet () != ENTER_DEBUG
)
5841 error ("Debugging session terminated by protocol error");
5844 return remote_wait (ptid
, status
);
5848 init_remote_cisco_ops (void)
5850 remote_cisco_ops
.to_shortname
= "cisco";
5851 remote_cisco_ops
.to_longname
= "Remote serial target in cisco-specific protocol";
5852 remote_cisco_ops
.to_doc
=
5853 "Use a remote machine via TCP, using a cisco-specific protocol.\n\
5854 Specify the serial device it is connected to (e.g. host:2020).";
5855 remote_cisco_ops
.to_open
= remote_cisco_open
;
5856 remote_cisco_ops
.to_close
= remote_cisco_close
;
5857 remote_cisco_ops
.to_detach
= remote_detach
;
5858 remote_cisco_ops
.to_disconnect
= remote_disconnect
;
5859 remote_cisco_ops
.to_resume
= remote_resume
;
5860 remote_cisco_ops
.to_wait
= remote_cisco_wait
;
5861 remote_cisco_ops
.to_fetch_registers
= remote_fetch_registers
;
5862 remote_cisco_ops
.to_store_registers
= remote_store_registers
;
5863 remote_cisco_ops
.to_prepare_to_store
= remote_prepare_to_store
;
5864 remote_cisco_ops
.to_xfer_memory
= remote_xfer_memory
;
5865 remote_cisco_ops
.to_files_info
= remote_files_info
;
5866 remote_cisco_ops
.to_insert_breakpoint
= remote_insert_breakpoint
;
5867 remote_cisco_ops
.to_remove_breakpoint
= remote_remove_breakpoint
;
5868 remote_cisco_ops
.to_remove_hw_breakpoint
= remote_remove_hw_breakpoint
;
5869 remote_cisco_ops
.to_insert_hw_breakpoint
= remote_insert_hw_breakpoint
;
5870 remote_cisco_ops
.to_insert_watchpoint
= remote_insert_watchpoint
;
5871 remote_cisco_ops
.to_remove_watchpoint
= remote_remove_watchpoint
;
5872 remote_cisco_ops
.to_stopped_by_watchpoint
= remote_stopped_by_watchpoint
;
5873 remote_cisco_ops
.to_stopped_data_address
= remote_stopped_data_address
;
5874 remote_cisco_ops
.to_can_use_hw_breakpoint
= remote_check_watch_resources
;
5875 remote_cisco_ops
.to_kill
= remote_kill
;
5876 remote_cisco_ops
.to_load
= generic_load
;
5877 remote_cisco_ops
.to_mourn_inferior
= remote_cisco_mourn
;
5878 remote_cisco_ops
.to_thread_alive
= remote_thread_alive
;
5879 remote_cisco_ops
.to_find_new_threads
= remote_threads_info
;
5880 remote_cisco_ops
.to_pid_to_str
= remote_pid_to_str
;
5881 remote_cisco_ops
.to_extra_thread_info
= remote_threads_extra_info
;
5882 remote_cisco_ops
.to_stratum
= process_stratum
;
5883 remote_cisco_ops
.to_has_all_memory
= 1;
5884 remote_cisco_ops
.to_has_memory
= 1;
5885 remote_cisco_ops
.to_has_stack
= 1;
5886 remote_cisco_ops
.to_has_registers
= 1;
5887 remote_cisco_ops
.to_has_execution
= 1;
5888 remote_cisco_ops
.to_magic
= OPS_MAGIC
;
5892 remote_can_async_p (void)
5894 /* We're async whenever the serial device is. */
5895 return (current_target
.to_async_mask_value
) && serial_can_async_p (remote_desc
);
5899 remote_is_async_p (void)
5901 /* We're async whenever the serial device is. */
5902 return (current_target
.to_async_mask_value
) && serial_is_async_p (remote_desc
);
5905 /* Pass the SERIAL event on and up to the client. One day this code
5906 will be able to delay notifying the client of an event until the
5907 point where an entire packet has been received. */
5909 static void (*async_client_callback
) (enum inferior_event_type event_type
, void *context
);
5910 static void *async_client_context
;
5911 static serial_event_ftype remote_async_serial_handler
;
5914 remote_async_serial_handler (struct serial
*scb
, void *context
)
5916 /* Don't propogate error information up to the client. Instead let
5917 the client find out about the error by querying the target. */
5918 async_client_callback (INF_REG_EVENT
, async_client_context
);
5922 remote_async (void (*callback
) (enum inferior_event_type event_type
, void *context
), void *context
)
5924 if (current_target
.to_async_mask_value
== 0)
5925 internal_error (__FILE__
, __LINE__
,
5926 "Calling remote_async when async is masked");
5928 if (callback
!= NULL
)
5930 serial_async (remote_desc
, remote_async_serial_handler
, NULL
);
5931 async_client_callback
= callback
;
5932 async_client_context
= context
;
5935 serial_async (remote_desc
, NULL
, NULL
);
5938 /* Target async and target extended-async.
5940 This are temporary targets, until it is all tested. Eventually
5941 async support will be incorporated int the usual 'remote'
5945 init_remote_async_ops (void)
5947 remote_async_ops
.to_shortname
= "async";
5948 remote_async_ops
.to_longname
= "Remote serial target in async version of the gdb-specific protocol";
5949 remote_async_ops
.to_doc
=
5950 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
5951 Specify the serial device it is connected to (e.g. /dev/ttya).";
5952 remote_async_ops
.to_open
= remote_async_open
;
5953 remote_async_ops
.to_close
= remote_close
;
5954 remote_async_ops
.to_detach
= remote_detach
;
5955 remote_async_ops
.to_disconnect
= remote_disconnect
;
5956 remote_async_ops
.to_resume
= remote_async_resume
;
5957 remote_async_ops
.to_wait
= remote_async_wait
;
5958 remote_async_ops
.to_fetch_registers
= remote_fetch_registers
;
5959 remote_async_ops
.to_store_registers
= remote_store_registers
;
5960 remote_async_ops
.to_prepare_to_store
= remote_prepare_to_store
;
5961 remote_async_ops
.to_xfer_memory
= remote_xfer_memory
;
5962 remote_async_ops
.to_files_info
= remote_files_info
;
5963 remote_async_ops
.to_insert_breakpoint
= remote_insert_breakpoint
;
5964 remote_async_ops
.to_remove_breakpoint
= remote_remove_breakpoint
;
5965 remote_async_ops
.to_can_use_hw_breakpoint
= remote_check_watch_resources
;
5966 remote_async_ops
.to_insert_hw_breakpoint
= remote_insert_hw_breakpoint
;
5967 remote_async_ops
.to_remove_hw_breakpoint
= remote_remove_hw_breakpoint
;
5968 remote_async_ops
.to_insert_watchpoint
= remote_insert_watchpoint
;
5969 remote_async_ops
.to_remove_watchpoint
= remote_remove_watchpoint
;
5970 remote_async_ops
.to_stopped_by_watchpoint
= remote_stopped_by_watchpoint
;
5971 remote_async_ops
.to_stopped_data_address
= remote_stopped_data_address
;
5972 remote_async_ops
.to_terminal_inferior
= remote_async_terminal_inferior
;
5973 remote_async_ops
.to_terminal_ours
= remote_async_terminal_ours
;
5974 remote_async_ops
.to_kill
= remote_async_kill
;
5975 remote_async_ops
.to_load
= generic_load
;
5976 remote_async_ops
.to_mourn_inferior
= remote_async_mourn
;
5977 remote_async_ops
.to_thread_alive
= remote_thread_alive
;
5978 remote_async_ops
.to_find_new_threads
= remote_threads_info
;
5979 remote_async_ops
.to_pid_to_str
= remote_pid_to_str
;
5980 remote_async_ops
.to_extra_thread_info
= remote_threads_extra_info
;
5981 remote_async_ops
.to_stop
= remote_stop
;
5982 remote_async_ops
.to_query
= remote_query
;
5983 remote_async_ops
.to_rcmd
= remote_rcmd
;
5984 remote_async_ops
.to_stratum
= process_stratum
;
5985 remote_async_ops
.to_has_all_memory
= 1;
5986 remote_async_ops
.to_has_memory
= 1;
5987 remote_async_ops
.to_has_stack
= 1;
5988 remote_async_ops
.to_has_registers
= 1;
5989 remote_async_ops
.to_has_execution
= 1;
5990 remote_async_ops
.to_has_thread_control
= tc_schedlock
; /* can lock scheduler */
5991 remote_async_ops
.to_can_async_p
= remote_can_async_p
;
5992 remote_async_ops
.to_is_async_p
= remote_is_async_p
;
5993 remote_async_ops
.to_async
= remote_async
;
5994 remote_async_ops
.to_async_mask_value
= 1;
5995 remote_async_ops
.to_magic
= OPS_MAGIC
;
5998 /* Set up the async extended remote vector by making a copy of the standard
5999 remote vector and adding to it. */
6002 init_extended_async_remote_ops (void)
6004 extended_async_remote_ops
= remote_async_ops
;
6006 extended_async_remote_ops
.to_shortname
= "extended-async";
6007 extended_async_remote_ops
.to_longname
=
6008 "Extended remote serial target in async gdb-specific protocol";
6009 extended_async_remote_ops
.to_doc
=
6010 "Use a remote computer via a serial line, using an async gdb-specific protocol.\n\
6011 Specify the serial device it is connected to (e.g. /dev/ttya).",
6012 extended_async_remote_ops
.to_open
= extended_remote_async_open
;
6013 extended_async_remote_ops
.to_create_inferior
= extended_remote_async_create_inferior
;
6014 extended_async_remote_ops
.to_mourn_inferior
= extended_remote_mourn
;
6018 set_remote_cmd (char *args
, int from_tty
)
6023 show_remote_cmd (char *args
, int from_tty
)
6025 /* FIXME: cagney/2002-06-15: This function should iterate over
6026 remote_show_cmdlist for a list of sub commands to show. */
6027 show_remote_protocol_Z_packet_cmd (args
, from_tty
, NULL
);
6028 show_remote_protocol_e_packet_cmd (args
, from_tty
, NULL
);
6029 show_remote_protocol_E_packet_cmd (args
, from_tty
, NULL
);
6030 show_remote_protocol_P_packet_cmd (args
, from_tty
, NULL
);
6031 show_remote_protocol_qSymbol_packet_cmd (args
, from_tty
, NULL
);
6032 show_remote_protocol_binary_download_cmd (args
, from_tty
, NULL
);
6036 build_remote_gdbarch_data (void)
6038 remote_address_size
= TARGET_ADDR_BIT
;
6041 /* Saved pointer to previous owner of the new_objfile event. */
6042 static void (*remote_new_objfile_chain
) (struct objfile
*);
6044 /* Function to be called whenever a new objfile (shlib) is detected. */
6046 remote_new_objfile (struct objfile
*objfile
)
6048 if (remote_desc
!= 0) /* Have a remote connection */
6050 remote_check_symbols (objfile
);
6052 /* Call predecessor on chain, if any. */
6053 if (remote_new_objfile_chain
!= 0 &&
6055 remote_new_objfile_chain (objfile
);
6059 _initialize_remote (void)
6061 static struct cmd_list_element
*remote_set_cmdlist
;
6062 static struct cmd_list_element
*remote_show_cmdlist
;
6063 struct cmd_list_element
*tmpcmd
;
6065 /* architecture specific data */
6066 remote_gdbarch_data_handle
= register_gdbarch_data (init_remote_state
,
6069 /* Old tacky stuff. NOTE: This comes after the remote protocol so
6070 that the remote protocol has been initialized. */
6071 register_gdbarch_swap (&remote_address_size
,
6072 sizeof (&remote_address_size
), NULL
);
6073 register_gdbarch_swap (NULL
, 0, build_remote_gdbarch_data
);
6076 add_target (&remote_ops
);
6078 init_extended_remote_ops ();
6079 add_target (&extended_remote_ops
);
6081 init_remote_async_ops ();
6082 add_target (&remote_async_ops
);
6084 init_extended_async_remote_ops ();
6085 add_target (&extended_async_remote_ops
);
6087 init_remote_cisco_ops ();
6088 add_target (&remote_cisco_ops
);
6090 /* Hook into new objfile notification. */
6091 remote_new_objfile_chain
= target_new_objfile_hook
;
6092 target_new_objfile_hook
= remote_new_objfile
;
6095 init_remote_threadtests ();
6098 /* set/show remote ... */
6100 add_prefix_cmd ("remote", class_maintenance
, set_remote_cmd
, "\
6101 Remote protocol specific variables\n\
6102 Configure various remote-protocol specific variables such as\n\
6103 the packets being used",
6104 &remote_set_cmdlist
, "set remote ",
6105 0/*allow-unknown*/, &setlist
);
6106 add_prefix_cmd ("remote", class_maintenance
, show_remote_cmd
, "\
6107 Remote protocol specific variables\n\
6108 Configure various remote-protocol specific variables such as\n\
6109 the packets being used",
6110 &remote_show_cmdlist
, "show remote ",
6111 0/*allow-unknown*/, &showlist
);
6113 add_cmd ("compare-sections", class_obscure
, compare_sections_command
,
6114 "Compare section data on target to the exec file.\n\
6115 Argument is a single section name (default: all loaded sections).",
6118 add_cmd ("packet", class_maintenance
, packet_command
,
6119 "Send an arbitrary packet to a remote target.\n\
6120 maintenance packet TEXT\n\
6121 If GDB is talking to an inferior via the GDB serial protocol, then\n\
6122 this command sends the string TEXT to the inferior, and displays the\n\
6123 response packet. GDB supplies the initial `$' character, and the\n\
6124 terminating `#' character and checksum.",
6127 add_setshow_boolean_cmd ("remotebreak", no_class
, &remote_break
,
6128 "Set whether to send break if interrupted.\n",
6129 "Show whether to send break if interrupted.\n",
6131 &setlist
, &showlist
);
6133 /* Install commands for configuring memory read/write packets. */
6135 add_cmd ("remotewritesize", no_class
, set_memory_write_packet_size
,
6136 "Set the maximum number of bytes per memory write packet (deprecated).\n",
6138 add_cmd ("remotewritesize", no_class
, show_memory_write_packet_size
,
6139 "Show the maximum number of bytes per memory write packet (deprecated).\n",
6141 add_cmd ("memory-write-packet-size", no_class
,
6142 set_memory_write_packet_size
,
6143 "Set the maximum number of bytes per memory-write 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-read-packet-size", no_class
,
6150 set_memory_read_packet_size
,
6151 "Set the maximum number of bytes per memory-read packet.\n"
6152 "Specify the number of bytes in a packet or 0 (zero) for the\n"
6153 "default packet size. The actual limit is further reduced\n"
6154 "dependent on the target. Specify ``fixed'' to disable the\n"
6155 "further restriction and ``limit'' to enable that restriction\n",
6156 &remote_set_cmdlist
);
6157 add_cmd ("memory-write-packet-size", no_class
,
6158 show_memory_write_packet_size
,
6159 "Show the maximum number of bytes per memory-write packet.\n",
6160 &remote_show_cmdlist
);
6161 add_cmd ("memory-read-packet-size", no_class
,
6162 show_memory_read_packet_size
,
6163 "Show the maximum number of bytes per memory-read packet.\n",
6164 &remote_show_cmdlist
);
6166 add_setshow_cmd ("hardware-watchpoint-limit", no_class
,
6167 var_zinteger
, &remote_hw_watchpoint_limit
, "\
6168 Set the maximum number of target hardware watchpoints.\n\
6169 Specify a negative limit for unlimited.", "\
6170 Show the maximum number of target hardware watchpoints.\n",
6171 NULL
, NULL
, &remote_set_cmdlist
, &remote_show_cmdlist
);
6172 add_setshow_cmd ("hardware-breakpoint-limit", no_class
,
6173 var_zinteger
, &remote_hw_breakpoint_limit
, "\
6174 Set the maximum number of target hardware breakpoints.\n\
6175 Specify a negative limit for unlimited.", "\
6176 Show the maximum number of target hardware breakpoints.\n",
6177 NULL
, NULL
, &remote_set_cmdlist
, &remote_show_cmdlist
);
6180 (add_set_cmd ("remoteaddresssize", class_obscure
,
6181 var_integer
, (char *) &remote_address_size
,
6182 "Set the maximum size of the address (in bits) \
6183 in a memory packet.\n",
6187 add_packet_config_cmd (&remote_protocol_binary_download
,
6188 "X", "binary-download",
6189 set_remote_protocol_binary_download_cmd
,
6190 show_remote_protocol_binary_download_cmd
,
6191 &remote_set_cmdlist
, &remote_show_cmdlist
,
6194 /* XXXX - should ``set remotebinarydownload'' be retained for
6197 (add_set_cmd ("remotebinarydownload", no_class
,
6198 var_boolean
, (char *) &remote_binary_download
,
6199 "Set binary downloads.\n", &setlist
),
6203 add_info ("remote-process", remote_info_process
,
6204 "Query the remote system for process info.");
6206 add_packet_config_cmd (&remote_protocol_qSymbol
,
6207 "qSymbol", "symbol-lookup",
6208 set_remote_protocol_qSymbol_packet_cmd
,
6209 show_remote_protocol_qSymbol_packet_cmd
,
6210 &remote_set_cmdlist
, &remote_show_cmdlist
,
6213 add_packet_config_cmd (&remote_protocol_e
,
6214 "e", "step-over-range",
6215 set_remote_protocol_e_packet_cmd
,
6216 show_remote_protocol_e_packet_cmd
,
6217 &remote_set_cmdlist
, &remote_show_cmdlist
,
6219 /* Disable by default. The ``e'' packet has nasty interactions with
6220 the threading code - it relies on global state. */
6221 remote_protocol_e
.detect
= AUTO_BOOLEAN_FALSE
;
6222 update_packet_config (&remote_protocol_e
);
6224 add_packet_config_cmd (&remote_protocol_E
,
6225 "E", "step-over-range-w-signal",
6226 set_remote_protocol_E_packet_cmd
,
6227 show_remote_protocol_E_packet_cmd
,
6228 &remote_set_cmdlist
, &remote_show_cmdlist
,
6230 /* Disable by default. The ``e'' packet has nasty interactions with
6231 the threading code - it relies on global state. */
6232 remote_protocol_E
.detect
= AUTO_BOOLEAN_FALSE
;
6233 update_packet_config (&remote_protocol_E
);
6235 add_packet_config_cmd (&remote_protocol_P
,
6236 "P", "set-register",
6237 set_remote_protocol_P_packet_cmd
,
6238 show_remote_protocol_P_packet_cmd
,
6239 &remote_set_cmdlist
, &remote_show_cmdlist
,
6242 add_packet_config_cmd (&remote_protocol_Z
[Z_PACKET_SOFTWARE_BP
],
6243 "Z0", "software-breakpoint",
6244 set_remote_protocol_Z_software_bp_packet_cmd
,
6245 show_remote_protocol_Z_software_bp_packet_cmd
,
6246 &remote_set_cmdlist
, &remote_show_cmdlist
,
6249 add_packet_config_cmd (&remote_protocol_Z
[Z_PACKET_HARDWARE_BP
],
6250 "Z1", "hardware-breakpoint",
6251 set_remote_protocol_Z_hardware_bp_packet_cmd
,
6252 show_remote_protocol_Z_hardware_bp_packet_cmd
,
6253 &remote_set_cmdlist
, &remote_show_cmdlist
,
6256 add_packet_config_cmd (&remote_protocol_Z
[Z_PACKET_WRITE_WP
],
6257 "Z2", "write-watchpoint",
6258 set_remote_protocol_Z_write_wp_packet_cmd
,
6259 show_remote_protocol_Z_write_wp_packet_cmd
,
6260 &remote_set_cmdlist
, &remote_show_cmdlist
,
6263 add_packet_config_cmd (&remote_protocol_Z
[Z_PACKET_READ_WP
],
6264 "Z3", "read-watchpoint",
6265 set_remote_protocol_Z_read_wp_packet_cmd
,
6266 show_remote_protocol_Z_read_wp_packet_cmd
,
6267 &remote_set_cmdlist
, &remote_show_cmdlist
,
6270 add_packet_config_cmd (&remote_protocol_Z
[Z_PACKET_ACCESS_WP
],
6271 "Z4", "access-watchpoint",
6272 set_remote_protocol_Z_access_wp_packet_cmd
,
6273 show_remote_protocol_Z_access_wp_packet_cmd
,
6274 &remote_set_cmdlist
, &remote_show_cmdlist
,
6277 /* Keep the old ``set remote Z-packet ...'' working. */
6278 add_setshow_auto_boolean_cmd ("Z-packet", class_obscure
,
6279 &remote_Z_packet_detect
, "\
6280 Set use of remote protocol `Z' packets",
6281 "Show use of remote protocol `Z' packets ",
6282 set_remote_protocol_Z_packet_cmd
,
6283 show_remote_protocol_Z_packet_cmd
,
6284 &remote_set_cmdlist
, &remote_show_cmdlist
);
6286 /* Eventually initialize fileio. See fileio.c */
6287 initialize_remote_fileio (remote_set_cmdlist
, remote_show_cmdlist
);