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
);
129 static void remote_async_detach (char *args
, int from_tty
);
131 static void remote_interrupt (int signo
);
133 static void remote_interrupt_twice (int signo
);
135 static void interrupt_query (void);
137 static void set_thread (int, int);
139 static int remote_thread_alive (ptid_t
);
141 static void get_offsets (void);
143 static long read_frame (char *buf
, long sizeof_buf
);
145 static int remote_insert_breakpoint (CORE_ADDR
, char *);
147 static int remote_remove_breakpoint (CORE_ADDR
, char *);
149 static int hexnumlen (ULONGEST num
);
151 static void init_remote_ops (void);
153 static void init_extended_remote_ops (void);
155 static void init_remote_cisco_ops (void);
157 static struct target_ops remote_cisco_ops
;
159 static void remote_stop (void);
161 static int ishex (int ch
, int *val
);
163 static int stubhex (int ch
);
165 static int remote_query (int /*char */ , char *, char *, int *);
167 static int hexnumstr (char *, ULONGEST
);
169 static int hexnumnstr (char *, ULONGEST
, int);
171 static CORE_ADDR
remote_address_masked (CORE_ADDR
);
173 static void print_packet (char *);
175 static unsigned long crc32 (unsigned char *, int, unsigned int);
177 static void compare_sections_command (char *, int);
179 static void packet_command (char *, int);
181 static int stub_unpack_int (char *buff
, int fieldlength
);
183 static ptid_t
remote_current_thread (ptid_t oldptid
);
185 static void remote_find_new_threads (void);
187 static void record_currthread (int currthread
);
189 static int fromhex (int a
);
191 static int hex2bin (const char *hex
, char *bin
, int count
);
193 static int bin2hex (const char *bin
, char *hex
, int count
);
195 static int putpkt_binary (char *buf
, int cnt
);
197 static void check_binary_download (CORE_ADDR addr
);
199 struct packet_config
;
201 static void show_packet_config_cmd (struct packet_config
*config
);
203 static void update_packet_config (struct packet_config
*config
);
205 void _initialize_remote (void);
207 /* Description of the remote protocol. Strictly speaking, when the
208 target is open()ed, remote.c should create a per-target description
209 of the remote protocol using that target's architecture.
210 Unfortunatly, the target stack doesn't include local state. For
211 the moment keep the information in the target's architecture
216 long offset
; /* Offset into G packet. */
217 long regnum
; /* GDB's internal register number. */
218 LONGEST pnum
; /* Remote protocol register number. */
219 int in_g_packet
; /* Always part of G packet. */
220 /* long size in bytes; == REGISTER_RAW_SIZE (regnum); at present. */
221 /* char *name; == REGISTER_NAME (regnum); at present. */
226 /* Description of the remote protocol registers. */
227 long sizeof_g_packet
;
229 /* Description of the remote protocol registers indexed by REGNUM
230 (making an array of NUM_REGS + NUM_PSEUDO_REGS in size). */
231 struct packet_reg
*regs
;
233 /* This is the size (in chars) of the first response to the ``g''
234 packet. It is used as a heuristic when determining the maximum
235 size of memory-read and memory-write packets. A target will
236 typically only reserve a buffer large enough to hold the ``g''
237 packet. The size does not include packet overhead (headers and
239 long actual_register_packet_size
;
241 /* This is the maximum size (in chars) of a non read/write packet.
242 It is also used as a cap on the size of read/write packets. */
243 long remote_packet_size
;
247 /* Handle for retreving the remote protocol data from gdbarch. */
248 static struct gdbarch_data
*remote_gdbarch_data_handle
;
250 static struct remote_state
*
251 get_remote_state (void)
253 return gdbarch_data (current_gdbarch
, remote_gdbarch_data_handle
);
257 init_remote_state (struct gdbarch
*gdbarch
)
260 struct remote_state
*rs
= xmalloc (sizeof (struct remote_state
));
262 if (DEPRECATED_REGISTER_BYTES
!= 0)
263 rs
->sizeof_g_packet
= DEPRECATED_REGISTER_BYTES
;
265 rs
->sizeof_g_packet
= 0;
267 /* Assume a 1:1 regnum<->pnum table. */
268 rs
->regs
= xcalloc (NUM_REGS
+ NUM_PSEUDO_REGS
, sizeof (struct packet_reg
));
269 for (regnum
= 0; regnum
< NUM_REGS
+ NUM_PSEUDO_REGS
; regnum
++)
271 struct packet_reg
*r
= &rs
->regs
[regnum
];
274 r
->offset
= REGISTER_BYTE (regnum
);
275 r
->in_g_packet
= (regnum
< NUM_REGS
);
276 /* ...name = REGISTER_NAME (regnum); */
278 /* Compute packet size by accumulating the size of all registers. */
279 if (DEPRECATED_REGISTER_BYTES
== 0)
280 rs
->sizeof_g_packet
+= register_size (current_gdbarch
, regnum
);
283 /* Default maximum number of characters in a packet body. Many
284 remote stubs have a hardwired buffer size of 400 bytes
285 (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used
286 as the maximum packet-size to ensure that the packet and an extra
287 NUL character can always fit in the buffer. This stops GDB
288 trashing stubs that try to squeeze an extra NUL into what is
289 already a full buffer (As of 1999-12-04 that was most stubs. */
290 rs
->remote_packet_size
= 400 - 1;
292 /* Should rs->sizeof_g_packet needs more space than the
293 default, adjust the size accordingly. Remember that each byte is
294 encoded as two characters. 32 is the overhead for the packet
295 header / footer. NOTE: cagney/1999-10-26: I suspect that 8
296 (``$NN:G...#NN'') is a better guess, the below has been padded a
298 if (rs
->sizeof_g_packet
> ((rs
->remote_packet_size
- 32) / 2))
299 rs
->remote_packet_size
= (rs
->sizeof_g_packet
* 2 + 32);
301 /* This one is filled in when a ``g'' packet is received. */
302 rs
->actual_register_packet_size
= 0;
308 free_remote_state (struct gdbarch
*gdbarch
, void *pointer
)
310 struct remote_state
*data
= pointer
;
315 static struct packet_reg
*
316 packet_reg_from_regnum (struct remote_state
*rs
, long regnum
)
318 if (regnum
< 0 && regnum
>= NUM_REGS
+ NUM_PSEUDO_REGS
)
322 struct packet_reg
*r
= &rs
->regs
[regnum
];
323 gdb_assert (r
->regnum
== regnum
);
328 static struct packet_reg
*
329 packet_reg_from_pnum (struct remote_state
*rs
, LONGEST pnum
)
332 for (i
= 0; i
< NUM_REGS
+ NUM_PSEUDO_REGS
; i
++)
334 struct packet_reg
*r
= &rs
->regs
[i
];
341 /* FIXME: graces/2002-08-08: These variables should eventually be
342 bound to an instance of the target object (as in gdbarch-tdep()),
343 when such a thing exists. */
345 /* This is set to the data address of the access causing the target
346 to stop for a watchpoint. */
347 static CORE_ADDR remote_watch_data_address
;
349 /* This is non-zero if taregt stopped for a watchpoint. */
350 static int remote_stopped_by_watchpoint_p
;
353 static struct target_ops remote_ops
;
355 static struct target_ops extended_remote_ops
;
357 /* Temporary target ops. Just like the remote_ops and
358 extended_remote_ops, but with asynchronous support. */
359 static struct target_ops remote_async_ops
;
361 static struct target_ops extended_async_remote_ops
;
363 /* FIXME: cagney/1999-09-23: Even though getpkt was called with
364 ``forever'' still use the normal timeout mechanism. This is
365 currently used by the ASYNC code to guarentee that target reads
366 during the initial connect always time-out. Once getpkt has been
367 modified to return a timeout indication and, in turn
368 remote_wait()/wait_for_inferior() have gained a timeout parameter
370 static int wait_forever_enabled_p
= 1;
373 /* This variable chooses whether to send a ^C or a break when the user
374 requests program interruption. Although ^C is usually what remote
375 systems expect, and that is the default here, sometimes a break is
376 preferable instead. */
378 static int remote_break
;
380 /* Descriptor for I/O to remote machine. Initialize it to NULL so that
381 remote_open knows that we don't have a file open when the program
383 static struct serial
*remote_desc
= NULL
;
385 /* This is set by the target (thru the 'S' message)
386 to denote that the target is in kernel mode. */
387 static int cisco_kernel_mode
= 0;
389 /* This variable sets the number of bits in an address that are to be
390 sent in a memory ("M" or "m") packet. Normally, after stripping
391 leading zeros, the entire address would be sent. This variable
392 restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The
393 initial implementation of remote.c restricted the address sent in
394 memory packets to ``host::sizeof long'' bytes - (typically 32
395 bits). Consequently, for 64 bit targets, the upper 32 bits of an
396 address was never sent. Since fixing this bug may cause a break in
397 some remote targets this variable is principly provided to
398 facilitate backward compatibility. */
400 static int remote_address_size
;
402 /* Tempoary to track who currently owns the terminal. See
403 target_async_terminal_* for more details. */
405 static int remote_async_terminal_ours_p
;
408 /* User configurable variables for the number of characters in a
409 memory read/write packet. MIN ((rs->remote_packet_size),
410 rs->sizeof_g_packet) is the default. Some targets need smaller
411 values (fifo overruns, et.al.) and some users need larger values
412 (speed up transfers). The variables ``preferred_*'' (the user
413 request), ``current_*'' (what was actually set) and ``forced_*''
414 (Positive - a soft limit, negative - a hard limit). */
416 struct memory_packet_config
423 /* Compute the current size of a read/write packet. Since this makes
424 use of ``actual_register_packet_size'' the computation is dynamic. */
427 get_memory_packet_size (struct memory_packet_config
*config
)
429 struct remote_state
*rs
= get_remote_state ();
430 /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk
431 law?) that some hosts don't cope very well with large alloca()
432 calls. Eventually the alloca() code will be replaced by calls to
433 xmalloc() and make_cleanups() allowing this restriction to either
434 be lifted or removed. */
435 #ifndef MAX_REMOTE_PACKET_SIZE
436 #define MAX_REMOTE_PACKET_SIZE 16384
438 /* NOTE: 16 is just chosen at random. */
439 #ifndef MIN_REMOTE_PACKET_SIZE
440 #define MIN_REMOTE_PACKET_SIZE 16
445 if (config
->size
<= 0)
446 what_they_get
= MAX_REMOTE_PACKET_SIZE
;
448 what_they_get
= config
->size
;
452 what_they_get
= (rs
->remote_packet_size
);
453 /* Limit the packet to the size specified by the user. */
455 && what_they_get
> config
->size
)
456 what_they_get
= config
->size
;
457 /* Limit it to the size of the targets ``g'' response. */
458 if ((rs
->actual_register_packet_size
) > 0
459 && what_they_get
> (rs
->actual_register_packet_size
))
460 what_they_get
= (rs
->actual_register_packet_size
);
462 if (what_they_get
> MAX_REMOTE_PACKET_SIZE
)
463 what_they_get
= MAX_REMOTE_PACKET_SIZE
;
464 if (what_they_get
< MIN_REMOTE_PACKET_SIZE
)
465 what_they_get
= MIN_REMOTE_PACKET_SIZE
;
466 return what_they_get
;
469 /* Update the size of a read/write packet. If they user wants
470 something really big then do a sanity check. */
473 set_memory_packet_size (char *args
, struct memory_packet_config
*config
)
475 int fixed_p
= config
->fixed_p
;
476 long size
= config
->size
;
478 error ("Argument required (integer, `fixed' or `limited').");
479 else if (strcmp (args
, "hard") == 0
480 || strcmp (args
, "fixed") == 0)
482 else if (strcmp (args
, "soft") == 0
483 || strcmp (args
, "limit") == 0)
488 size
= strtoul (args
, &end
, 0);
490 error ("Invalid %s (bad syntax).", config
->name
);
492 /* Instead of explicitly capping the size of a packet to
493 MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is
494 instead allowed to set the size to something arbitrarily
496 if (size
> MAX_REMOTE_PACKET_SIZE
)
497 error ("Invalid %s (too large).", config
->name
);
501 if (fixed_p
&& !config
->fixed_p
)
503 if (! query ("The target may not be able to correctly handle a %s\n"
504 "of %ld bytes. Change the packet size? ",
506 error ("Packet size not changed.");
508 /* Update the config. */
509 config
->fixed_p
= fixed_p
;
514 show_memory_packet_size (struct memory_packet_config
*config
)
516 printf_filtered ("The %s is %ld. ", config
->name
, config
->size
);
518 printf_filtered ("Packets are fixed at %ld bytes.\n",
519 get_memory_packet_size (config
));
521 printf_filtered ("Packets are limited to %ld bytes.\n",
522 get_memory_packet_size (config
));
525 static struct memory_packet_config memory_write_packet_config
=
527 "memory-write-packet-size",
531 set_memory_write_packet_size (char *args
, int from_tty
)
533 set_memory_packet_size (args
, &memory_write_packet_config
);
537 show_memory_write_packet_size (char *args
, int from_tty
)
539 show_memory_packet_size (&memory_write_packet_config
);
543 get_memory_write_packet_size (void)
545 return get_memory_packet_size (&memory_write_packet_config
);
548 static struct memory_packet_config memory_read_packet_config
=
550 "memory-read-packet-size",
554 set_memory_read_packet_size (char *args
, int from_tty
)
556 set_memory_packet_size (args
, &memory_read_packet_config
);
560 show_memory_read_packet_size (char *args
, int from_tty
)
562 show_memory_packet_size (&memory_read_packet_config
);
566 get_memory_read_packet_size (void)
568 struct remote_state
*rs
= get_remote_state ();
569 long size
= get_memory_packet_size (&memory_read_packet_config
);
570 /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an
571 extra buffer size argument before the memory read size can be
572 increased beyond (rs->remote_packet_size). */
573 if (size
> (rs
->remote_packet_size
))
574 size
= (rs
->remote_packet_size
);
579 /* Generic configuration support for packets the stub optionally
580 supports. Allows the user to specify the use of the packet as well
581 as allowing GDB to auto-detect support in the remote stub. */
585 PACKET_SUPPORT_UNKNOWN
= 0,
594 enum auto_boolean detect
;
595 enum packet_support support
;
598 /* Analyze a packet's return value and update the packet config
609 update_packet_config (struct packet_config
*config
)
611 switch (config
->detect
)
613 case AUTO_BOOLEAN_TRUE
:
614 config
->support
= PACKET_ENABLE
;
616 case AUTO_BOOLEAN_FALSE
:
617 config
->support
= PACKET_DISABLE
;
619 case AUTO_BOOLEAN_AUTO
:
620 config
->support
= PACKET_SUPPORT_UNKNOWN
;
626 show_packet_config_cmd (struct packet_config
*config
)
628 char *support
= "internal-error";
629 switch (config
->support
)
635 support
= "disabled";
637 case PACKET_SUPPORT_UNKNOWN
:
641 switch (config
->detect
)
643 case AUTO_BOOLEAN_AUTO
:
644 printf_filtered ("Support for remote protocol `%s' (%s) packet is auto-detected, currently %s.\n",
645 config
->name
, config
->title
, support
);
647 case AUTO_BOOLEAN_TRUE
:
648 case AUTO_BOOLEAN_FALSE
:
649 printf_filtered ("Support for remote protocol `%s' (%s) packet is currently %s.\n",
650 config
->name
, config
->title
, support
);
656 add_packet_config_cmd (struct packet_config
*config
,
659 cmd_sfunc_ftype
*set_func
,
660 cmd_sfunc_ftype
*show_func
,
661 struct cmd_list_element
**set_remote_list
,
662 struct cmd_list_element
**show_remote_list
,
665 struct cmd_list_element
*set_cmd
;
666 struct cmd_list_element
*show_cmd
;
671 config
->title
= title
;
672 config
->detect
= AUTO_BOOLEAN_AUTO
;
673 config
->support
= PACKET_SUPPORT_UNKNOWN
;
674 xasprintf (&set_doc
, "Set use of remote protocol `%s' (%s) packet",
676 xasprintf (&show_doc
, "Show current use of remote protocol `%s' (%s) packet",
678 /* set/show TITLE-packet {auto,on,off} */
679 xasprintf (&cmd_name
, "%s-packet", title
);
680 add_setshow_auto_boolean_cmd (cmd_name
, class_obscure
,
681 &config
->detect
, set_doc
, show_doc
,
683 set_remote_list
, show_remote_list
);
684 /* set/show remote NAME-packet {auto,on,off} -- legacy */
688 xasprintf (&legacy_name
, "%s-packet", name
);
689 add_alias_cmd (legacy_name
, cmd_name
, class_obscure
, 0,
691 add_alias_cmd (legacy_name
, cmd_name
, class_obscure
, 0,
696 static enum packet_result
697 packet_ok (const char *buf
, struct packet_config
*config
)
701 /* The stub recognized the packet request. Check that the
702 operation succeeded. */
703 switch (config
->support
)
705 case PACKET_SUPPORT_UNKNOWN
:
707 fprintf_unfiltered (gdb_stdlog
,
708 "Packet %s (%s) is supported\n",
709 config
->name
, config
->title
);
710 config
->support
= PACKET_ENABLE
;
713 internal_error (__FILE__
, __LINE__
,
714 "packet_ok: attempt to use a disabled packet");
719 if (buf
[0] == 'O' && buf
[1] == 'K' && buf
[2] == '\0')
720 /* "OK" - definitly OK. */
723 && isxdigit (buf
[1]) && isxdigit (buf
[2])
725 /* "Enn" - definitly an error. */
727 /* The packet may or may not be OK. Just assume it is */
732 /* The stub does not support the packet. */
733 switch (config
->support
)
736 if (config
->detect
== AUTO_BOOLEAN_AUTO
)
737 /* If the stub previously indicated that the packet was
738 supported then there is a protocol error.. */
739 error ("Protocol error: %s (%s) conflicting enabled responses.",
740 config
->name
, config
->title
);
742 /* The user set it wrong. */
743 error ("Enabled packet %s (%s) not recognized by stub",
744 config
->name
, config
->title
);
746 case PACKET_SUPPORT_UNKNOWN
:
748 fprintf_unfiltered (gdb_stdlog
,
749 "Packet %s (%s) is NOT supported\n",
750 config
->name
, config
->title
);
751 config
->support
= PACKET_DISABLE
;
756 return PACKET_UNKNOWN
;
760 /* Should we try the 'qSymbol' (target symbol lookup service) request? */
761 static struct packet_config remote_protocol_qSymbol
;
764 set_remote_protocol_qSymbol_packet_cmd (char *args
, int from_tty
,
765 struct cmd_list_element
*c
)
767 update_packet_config (&remote_protocol_qSymbol
);
771 show_remote_protocol_qSymbol_packet_cmd (char *args
, int from_tty
,
772 struct cmd_list_element
*c
)
774 show_packet_config_cmd (&remote_protocol_qSymbol
);
777 /* Should we try the 'e' (step over range) request? */
778 static struct packet_config remote_protocol_e
;
781 set_remote_protocol_e_packet_cmd (char *args
, int from_tty
,
782 struct cmd_list_element
*c
)
784 update_packet_config (&remote_protocol_e
);
788 show_remote_protocol_e_packet_cmd (char *args
, int from_tty
,
789 struct cmd_list_element
*c
)
791 show_packet_config_cmd (&remote_protocol_e
);
795 /* Should we try the 'E' (step over range / w signal #) request? */
796 static struct packet_config remote_protocol_E
;
799 set_remote_protocol_E_packet_cmd (char *args
, int from_tty
,
800 struct cmd_list_element
*c
)
802 update_packet_config (&remote_protocol_E
);
806 show_remote_protocol_E_packet_cmd (char *args
, int from_tty
,
807 struct cmd_list_element
*c
)
809 show_packet_config_cmd (&remote_protocol_E
);
813 /* Should we try the 'P' (set register) request? */
815 static struct packet_config remote_protocol_P
;
818 set_remote_protocol_P_packet_cmd (char *args
, int from_tty
,
819 struct cmd_list_element
*c
)
821 update_packet_config (&remote_protocol_P
);
825 show_remote_protocol_P_packet_cmd (char *args
, int from_tty
,
826 struct cmd_list_element
*c
)
828 show_packet_config_cmd (&remote_protocol_P
);
831 /* Should we try one of the 'Z' requests? */
835 Z_PACKET_SOFTWARE_BP
,
836 Z_PACKET_HARDWARE_BP
,
843 static struct packet_config remote_protocol_Z
[NR_Z_PACKET_TYPES
];
845 /* FIXME: Instead of having all these boiler plate functions, the
846 command callback should include a context argument. */
849 set_remote_protocol_Z_software_bp_packet_cmd (char *args
, int from_tty
,
850 struct cmd_list_element
*c
)
852 update_packet_config (&remote_protocol_Z
[Z_PACKET_SOFTWARE_BP
]);
856 show_remote_protocol_Z_software_bp_packet_cmd (char *args
, int from_tty
,
857 struct cmd_list_element
*c
)
859 show_packet_config_cmd (&remote_protocol_Z
[Z_PACKET_SOFTWARE_BP
]);
863 set_remote_protocol_Z_hardware_bp_packet_cmd (char *args
, int from_tty
,
864 struct cmd_list_element
*c
)
866 update_packet_config (&remote_protocol_Z
[Z_PACKET_HARDWARE_BP
]);
870 show_remote_protocol_Z_hardware_bp_packet_cmd (char *args
, int from_tty
,
871 struct cmd_list_element
*c
)
873 show_packet_config_cmd (&remote_protocol_Z
[Z_PACKET_HARDWARE_BP
]);
877 set_remote_protocol_Z_write_wp_packet_cmd (char *args
, int from_tty
,
878 struct cmd_list_element
*c
)
880 update_packet_config (&remote_protocol_Z
[Z_PACKET_WRITE_WP
]);
884 show_remote_protocol_Z_write_wp_packet_cmd (char *args
, int from_tty
,
885 struct cmd_list_element
*c
)
887 show_packet_config_cmd (&remote_protocol_Z
[Z_PACKET_WRITE_WP
]);
891 set_remote_protocol_Z_read_wp_packet_cmd (char *args
, int from_tty
,
892 struct cmd_list_element
*c
)
894 update_packet_config (&remote_protocol_Z
[Z_PACKET_READ_WP
]);
898 show_remote_protocol_Z_read_wp_packet_cmd (char *args
, int from_tty
,
899 struct cmd_list_element
*c
)
901 show_packet_config_cmd (&remote_protocol_Z
[Z_PACKET_READ_WP
]);
905 set_remote_protocol_Z_access_wp_packet_cmd (char *args
, int from_tty
,
906 struct cmd_list_element
*c
)
908 update_packet_config (&remote_protocol_Z
[Z_PACKET_ACCESS_WP
]);
912 show_remote_protocol_Z_access_wp_packet_cmd (char *args
, int from_tty
,
913 struct cmd_list_element
*c
)
915 show_packet_config_cmd (&remote_protocol_Z
[Z_PACKET_ACCESS_WP
]);
918 /* For compatibility with older distributions. Provide a ``set remote
919 Z-packet ...'' command that updates all the Z packet types. */
921 static enum auto_boolean remote_Z_packet_detect
;
924 set_remote_protocol_Z_packet_cmd (char *args
, int from_tty
,
925 struct cmd_list_element
*c
)
928 for (i
= 0; i
< NR_Z_PACKET_TYPES
; i
++)
930 remote_protocol_Z
[i
].detect
= remote_Z_packet_detect
;
931 update_packet_config (&remote_protocol_Z
[i
]);
936 show_remote_protocol_Z_packet_cmd (char *args
, int from_tty
,
937 struct cmd_list_element
*c
)
940 for (i
= 0; i
< NR_Z_PACKET_TYPES
; i
++)
942 show_packet_config_cmd (&remote_protocol_Z
[i
]);
946 /* Should we try the 'X' (remote binary download) packet?
948 This variable (available to the user via "set remote X-packet")
949 dictates whether downloads are sent in binary (via the 'X' packet).
950 We assume that the stub can, and attempt to do it. This will be
951 cleared if the stub does not understand it. This switch is still
952 needed, though in cases when the packet is supported in the stub,
953 but the connection does not allow it (i.e., 7-bit serial connection
956 static struct packet_config remote_protocol_binary_download
;
958 /* Should we try the 'ThreadInfo' query packet?
960 This variable (NOT available to the user: auto-detect only!)
961 determines whether GDB will use the new, simpler "ThreadInfo"
962 query or the older, more complex syntax for thread queries.
963 This is an auto-detect variable (set to true at each connect,
964 and set to false when the target fails to recognize it). */
966 static int use_threadinfo_query
;
967 static int use_threadextra_query
;
970 set_remote_protocol_binary_download_cmd (char *args
,
972 struct cmd_list_element
*c
)
974 update_packet_config (&remote_protocol_binary_download
);
978 show_remote_protocol_binary_download_cmd (char *args
, int from_tty
,
979 struct cmd_list_element
*c
)
981 show_packet_config_cmd (&remote_protocol_binary_download
);
985 /* Tokens for use by the asynchronous signal handlers for SIGINT */
986 static void *sigint_remote_twice_token
;
987 static void *sigint_remote_token
;
989 /* These are pointers to hook functions that may be set in order to
990 modify resume/wait behavior for a particular architecture. */
992 void (*target_resume_hook
) (void);
993 void (*target_wait_loop_hook
) (void);
997 /* These are the threads which we last sent to the remote system.
998 -1 for all or -2 for not sent yet. */
999 static int general_thread
;
1000 static int continue_thread
;
1002 /* Call this function as a result of
1003 1) A halt indication (T packet) containing a thread id
1004 2) A direct query of currthread
1005 3) Successful execution of set thread
1009 record_currthread (int currthread
)
1011 general_thread
= currthread
;
1013 /* If this is a new thread, add it to GDB's thread list.
1014 If we leave it up to WFI to do this, bad things will happen. */
1015 if (!in_thread_list (pid_to_ptid (currthread
)))
1017 add_thread (pid_to_ptid (currthread
));
1018 ui_out_text (uiout
, "[New ");
1019 ui_out_text (uiout
, target_pid_to_str (pid_to_ptid (currthread
)));
1020 ui_out_text (uiout
, "]\n");
1024 #define MAGIC_NULL_PID 42000
1027 set_thread (int th
, int gen
)
1029 struct remote_state
*rs
= get_remote_state ();
1030 char *buf
= alloca (rs
->remote_packet_size
);
1031 int state
= gen
? general_thread
: continue_thread
;
1037 buf
[1] = gen
? 'g' : 'c';
1038 if (th
== MAGIC_NULL_PID
)
1044 sprintf (&buf
[2], "-%x", -th
);
1046 sprintf (&buf
[2], "%x", th
);
1048 getpkt (buf
, (rs
->remote_packet_size
), 0);
1050 general_thread
= th
;
1052 continue_thread
= th
;
1055 /* Return nonzero if the thread TH is still alive on the remote system. */
1058 remote_thread_alive (ptid_t ptid
)
1060 int tid
= PIDGET (ptid
);
1064 sprintf (buf
, "T-%08x", -tid
);
1066 sprintf (buf
, "T%08x", tid
);
1068 getpkt (buf
, sizeof (buf
), 0);
1069 return (buf
[0] == 'O' && buf
[1] == 'K');
1072 /* About these extended threadlist and threadinfo packets. They are
1073 variable length packets but, the fields within them are often fixed
1074 length. They are redundent enough to send over UDP as is the
1075 remote protocol in general. There is a matching unit test module
1078 #define OPAQUETHREADBYTES 8
1080 /* a 64 bit opaque identifier */
1081 typedef unsigned char threadref
[OPAQUETHREADBYTES
];
1083 /* WARNING: This threadref data structure comes from the remote O.S., libstub
1084 protocol encoding, and remote.c. it is not particularly changable */
1086 /* Right now, the internal structure is int. We want it to be bigger.
1090 typedef int gdb_threadref
; /* internal GDB thread reference */
1092 /* gdb_ext_thread_info is an internal GDB data structure which is
1093 equivalint to the reply of the remote threadinfo packet */
1095 struct gdb_ext_thread_info
1097 threadref threadid
; /* External form of thread reference */
1098 int active
; /* Has state interesting to GDB? , regs, stack */
1099 char display
[256]; /* Brief state display, name, blocked/syspended */
1100 char shortname
[32]; /* To be used to name threads */
1101 char more_display
[256]; /* Long info, statistics, queue depth, whatever */
1104 /* The volume of remote transfers can be limited by submitting
1105 a mask containing bits specifying the desired information.
1106 Use a union of these values as the 'selection' parameter to
1107 get_thread_info. FIXME: Make these TAG names more thread specific.
1110 #define TAG_THREADID 1
1111 #define TAG_EXISTS 2
1112 #define TAG_DISPLAY 4
1113 #define TAG_THREADNAME 8
1114 #define TAG_MOREDISPLAY 16
1116 #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES*2)
1118 char *unpack_varlen_hex (char *buff
, ULONGEST
*result
);
1120 static char *unpack_nibble (char *buf
, int *val
);
1122 static char *pack_nibble (char *buf
, int nibble
);
1124 static char *pack_hex_byte (char *pkt
, int /*unsigned char */ byte
);
1126 static char *unpack_byte (char *buf
, int *value
);
1128 static char *pack_int (char *buf
, int value
);
1130 static char *unpack_int (char *buf
, int *value
);
1132 static char *unpack_string (char *src
, char *dest
, int length
);
1134 static char *pack_threadid (char *pkt
, threadref
* id
);
1136 static char *unpack_threadid (char *inbuf
, threadref
* id
);
1138 void int_to_threadref (threadref
* id
, int value
);
1140 static int threadref_to_int (threadref
* ref
);
1142 static void copy_threadref (threadref
* dest
, threadref
* src
);
1144 static int threadmatch (threadref
* dest
, threadref
* src
);
1146 static char *pack_threadinfo_request (char *pkt
, int mode
, threadref
* id
);
1148 static int remote_unpack_thread_info_response (char *pkt
,
1149 threadref
* expectedref
,
1150 struct gdb_ext_thread_info
1154 static int remote_get_threadinfo (threadref
* threadid
, int fieldset
, /*TAG mask */
1155 struct gdb_ext_thread_info
*info
);
1157 static int adapt_remote_get_threadinfo (gdb_threadref
* ref
,
1159 struct gdb_ext_thread_info
*info
);
1161 static char *pack_threadlist_request (char *pkt
, int startflag
,
1163 threadref
* nextthread
);
1165 static int parse_threadlist_response (char *pkt
,
1167 threadref
* original_echo
,
1168 threadref
* resultlist
, int *doneflag
);
1170 static int remote_get_threadlist (int startflag
,
1171 threadref
* nextthread
,
1174 int *result_count
, threadref
* threadlist
);
1176 typedef int (*rmt_thread_action
) (threadref
* ref
, void *context
);
1178 static int remote_threadlist_iterator (rmt_thread_action stepfunction
,
1179 void *context
, int looplimit
);
1181 static int remote_newthread_step (threadref
* ref
, void *context
);
1183 /* encode 64 bits in 16 chars of hex */
1185 static const char hexchars
[] = "0123456789abcdef";
1188 ishex (int ch
, int *val
)
1190 if ((ch
>= 'a') && (ch
<= 'f'))
1192 *val
= ch
- 'a' + 10;
1195 if ((ch
>= 'A') && (ch
<= 'F'))
1197 *val
= ch
- 'A' + 10;
1200 if ((ch
>= '0') && (ch
<= '9'))
1211 if (ch
>= 'a' && ch
<= 'f')
1212 return ch
- 'a' + 10;
1213 if (ch
>= '0' && ch
<= '9')
1215 if (ch
>= 'A' && ch
<= 'F')
1216 return ch
- 'A' + 10;
1221 stub_unpack_int (char *buff
, int fieldlength
)
1228 nibble
= stubhex (*buff
++);
1232 retval
= retval
<< 4;
1238 unpack_varlen_hex (char *buff
, /* packet to parse */
1244 while (ishex (*buff
, &nibble
))
1247 retval
= retval
<< 4;
1248 retval
|= nibble
& 0x0f;
1255 unpack_nibble (char *buf
, int *val
)
1257 ishex (*buf
++, val
);
1262 pack_nibble (char *buf
, int nibble
)
1264 *buf
++ = hexchars
[(nibble
& 0x0f)];
1269 pack_hex_byte (char *pkt
, int byte
)
1271 *pkt
++ = hexchars
[(byte
>> 4) & 0xf];
1272 *pkt
++ = hexchars
[(byte
& 0xf)];
1277 unpack_byte (char *buf
, int *value
)
1279 *value
= stub_unpack_int (buf
, 2);
1284 pack_int (char *buf
, int value
)
1286 buf
= pack_hex_byte (buf
, (value
>> 24) & 0xff);
1287 buf
= pack_hex_byte (buf
, (value
>> 16) & 0xff);
1288 buf
= pack_hex_byte (buf
, (value
>> 8) & 0x0ff);
1289 buf
= pack_hex_byte (buf
, (value
& 0xff));
1294 unpack_int (char *buf
, int *value
)
1296 *value
= stub_unpack_int (buf
, 8);
1300 #if 0 /* currently unused, uncomment when needed */
1301 static char *pack_string (char *pkt
, char *string
);
1304 pack_string (char *pkt
, char *string
)
1309 len
= strlen (string
);
1311 len
= 200; /* Bigger than most GDB packets, junk??? */
1312 pkt
= pack_hex_byte (pkt
, len
);
1316 if ((ch
== '\0') || (ch
== '#'))
1317 ch
= '*'; /* Protect encapsulation */
1322 #endif /* 0 (unused) */
1325 unpack_string (char *src
, char *dest
, int length
)
1334 pack_threadid (char *pkt
, threadref
*id
)
1337 unsigned char *altid
;
1339 altid
= (unsigned char *) id
;
1340 limit
= pkt
+ BUF_THREAD_ID_SIZE
;
1342 pkt
= pack_hex_byte (pkt
, *altid
++);
1348 unpack_threadid (char *inbuf
, threadref
*id
)
1351 char *limit
= inbuf
+ BUF_THREAD_ID_SIZE
;
1354 altref
= (char *) id
;
1356 while (inbuf
< limit
)
1358 x
= stubhex (*inbuf
++);
1359 y
= stubhex (*inbuf
++);
1360 *altref
++ = (x
<< 4) | y
;
1365 /* Externally, threadrefs are 64 bits but internally, they are still
1366 ints. This is due to a mismatch of specifications. We would like
1367 to use 64bit thread references internally. This is an adapter
1371 int_to_threadref (threadref
*id
, int value
)
1373 unsigned char *scan
;
1375 scan
= (unsigned char *) id
;
1381 *scan
++ = (value
>> 24) & 0xff;
1382 *scan
++ = (value
>> 16) & 0xff;
1383 *scan
++ = (value
>> 8) & 0xff;
1384 *scan
++ = (value
& 0xff);
1388 threadref_to_int (threadref
*ref
)
1391 unsigned char *scan
;
1393 scan
= (char *) ref
;
1397 value
= (value
<< 8) | ((*scan
++) & 0xff);
1402 copy_threadref (threadref
*dest
, threadref
*src
)
1405 unsigned char *csrc
, *cdest
;
1407 csrc
= (unsigned char *) src
;
1408 cdest
= (unsigned char *) dest
;
1415 threadmatch (threadref
*dest
, threadref
*src
)
1417 /* things are broken right now, so just assume we got a match */
1419 unsigned char *srcp
, *destp
;
1421 srcp
= (char *) src
;
1422 destp
= (char *) dest
;
1426 result
&= (*srcp
++ == *destp
++) ? 1 : 0;
1433 threadid:1, # always request threadid
1440 /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */
1443 pack_threadinfo_request (char *pkt
, int mode
, threadref
*id
)
1445 *pkt
++ = 'q'; /* Info Query */
1446 *pkt
++ = 'P'; /* process or thread info */
1447 pkt
= pack_int (pkt
, mode
); /* mode */
1448 pkt
= pack_threadid (pkt
, id
); /* threadid */
1449 *pkt
= '\0'; /* terminate */
1453 /* These values tag the fields in a thread info response packet */
1454 /* Tagging the fields allows us to request specific fields and to
1455 add more fields as time goes by */
1457 #define TAG_THREADID 1 /* Echo the thread identifier */
1458 #define TAG_EXISTS 2 /* Is this process defined enough to
1459 fetch registers and its stack */
1460 #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */
1461 #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is */
1462 #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about
1466 remote_unpack_thread_info_response (char *pkt
, threadref
*expectedref
,
1467 struct gdb_ext_thread_info
*info
)
1469 struct remote_state
*rs
= get_remote_state ();
1473 char *limit
= pkt
+ (rs
->remote_packet_size
); /* plausable parsing limit */
1476 /* info->threadid = 0; FIXME: implement zero_threadref */
1478 info
->display
[0] = '\0';
1479 info
->shortname
[0] = '\0';
1480 info
->more_display
[0] = '\0';
1482 /* Assume the characters indicating the packet type have been stripped */
1483 pkt
= unpack_int (pkt
, &mask
); /* arg mask */
1484 pkt
= unpack_threadid (pkt
, &ref
);
1487 warning ("Incomplete response to threadinfo request\n");
1488 if (!threadmatch (&ref
, expectedref
))
1489 { /* This is an answer to a different request */
1490 warning ("ERROR RMT Thread info mismatch\n");
1493 copy_threadref (&info
->threadid
, &ref
);
1495 /* Loop on tagged fields , try to bail if somthing goes wrong */
1497 while ((pkt
< limit
) && mask
&& *pkt
) /* packets are terminated with nulls */
1499 pkt
= unpack_int (pkt
, &tag
); /* tag */
1500 pkt
= unpack_byte (pkt
, &length
); /* length */
1501 if (!(tag
& mask
)) /* tags out of synch with mask */
1503 warning ("ERROR RMT: threadinfo tag mismatch\n");
1507 if (tag
== TAG_THREADID
)
1511 warning ("ERROR RMT: length of threadid is not 16\n");
1515 pkt
= unpack_threadid (pkt
, &ref
);
1516 mask
= mask
& ~TAG_THREADID
;
1519 if (tag
== TAG_EXISTS
)
1521 info
->active
= stub_unpack_int (pkt
, length
);
1523 mask
= mask
& ~(TAG_EXISTS
);
1526 warning ("ERROR RMT: 'exists' length too long\n");
1532 if (tag
== TAG_THREADNAME
)
1534 pkt
= unpack_string (pkt
, &info
->shortname
[0], length
);
1535 mask
= mask
& ~TAG_THREADNAME
;
1538 if (tag
== TAG_DISPLAY
)
1540 pkt
= unpack_string (pkt
, &info
->display
[0], length
);
1541 mask
= mask
& ~TAG_DISPLAY
;
1544 if (tag
== TAG_MOREDISPLAY
)
1546 pkt
= unpack_string (pkt
, &info
->more_display
[0], length
);
1547 mask
= mask
& ~TAG_MOREDISPLAY
;
1550 warning ("ERROR RMT: unknown thread info tag\n");
1551 break; /* Not a tag we know about */
1557 remote_get_threadinfo (threadref
*threadid
, int fieldset
, /* TAG mask */
1558 struct gdb_ext_thread_info
*info
)
1560 struct remote_state
*rs
= get_remote_state ();
1562 char *threadinfo_pkt
= alloca (rs
->remote_packet_size
);
1564 pack_threadinfo_request (threadinfo_pkt
, fieldset
, threadid
);
1565 putpkt (threadinfo_pkt
);
1566 getpkt (threadinfo_pkt
, (rs
->remote_packet_size
), 0);
1567 result
= remote_unpack_thread_info_response (threadinfo_pkt
+ 2, threadid
,
1572 /* Unfortunately, 61 bit thread-ids are bigger than the internal
1573 representation of a threadid. */
1576 adapt_remote_get_threadinfo (gdb_threadref
*ref
, int selection
,
1577 struct gdb_ext_thread_info
*info
)
1581 int_to_threadref (&lclref
, *ref
);
1582 return remote_get_threadinfo (&lclref
, selection
, info
);
1585 /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */
1588 pack_threadlist_request (char *pkt
, int startflag
, int threadcount
,
1589 threadref
*nextthread
)
1591 *pkt
++ = 'q'; /* info query packet */
1592 *pkt
++ = 'L'; /* Process LIST or threadLIST request */
1593 pkt
= pack_nibble (pkt
, startflag
); /* initflag 1 bytes */
1594 pkt
= pack_hex_byte (pkt
, threadcount
); /* threadcount 2 bytes */
1595 pkt
= pack_threadid (pkt
, nextthread
); /* 64 bit thread identifier */
1600 /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */
1603 parse_threadlist_response (char *pkt
, int result_limit
,
1604 threadref
*original_echo
, threadref
*resultlist
,
1607 struct remote_state
*rs
= get_remote_state ();
1609 int count
, resultcount
, done
;
1612 /* Assume the 'q' and 'M chars have been stripped. */
1613 limit
= pkt
+ ((rs
->remote_packet_size
) - BUF_THREAD_ID_SIZE
); /* done parse past here */
1614 pkt
= unpack_byte (pkt
, &count
); /* count field */
1615 pkt
= unpack_nibble (pkt
, &done
);
1616 /* The first threadid is the argument threadid. */
1617 pkt
= unpack_threadid (pkt
, original_echo
); /* should match query packet */
1618 while ((count
-- > 0) && (pkt
< limit
))
1620 pkt
= unpack_threadid (pkt
, resultlist
++);
1621 if (resultcount
++ >= result_limit
)
1630 remote_get_threadlist (int startflag
, threadref
*nextthread
, int result_limit
,
1631 int *done
, int *result_count
, threadref
*threadlist
)
1633 struct remote_state
*rs
= get_remote_state ();
1634 static threadref echo_nextthread
;
1635 char *threadlist_packet
= alloca (rs
->remote_packet_size
);
1636 char *t_response
= alloca (rs
->remote_packet_size
);
1639 /* Trancate result limit to be smaller than the packet size */
1640 if ((((result_limit
+ 1) * BUF_THREAD_ID_SIZE
) + 10) >= (rs
->remote_packet_size
))
1641 result_limit
= ((rs
->remote_packet_size
) / BUF_THREAD_ID_SIZE
) - 2;
1643 pack_threadlist_request (threadlist_packet
,
1644 startflag
, result_limit
, nextthread
);
1645 putpkt (threadlist_packet
);
1646 getpkt (t_response
, (rs
->remote_packet_size
), 0);
1649 parse_threadlist_response (t_response
+ 2, result_limit
, &echo_nextthread
,
1652 if (!threadmatch (&echo_nextthread
, nextthread
))
1654 /* FIXME: This is a good reason to drop the packet */
1655 /* Possably, there is a duplicate response */
1657 retransmit immediatly - race conditions
1658 retransmit after timeout - yes
1660 wait for packet, then exit
1662 warning ("HMM: threadlist did not echo arg thread, dropping it\n");
1663 return 0; /* I choose simply exiting */
1665 if (*result_count
<= 0)
1669 warning ("RMT ERROR : failed to get remote thread list\n");
1672 return result
; /* break; */
1674 if (*result_count
> result_limit
)
1677 warning ("RMT ERROR: threadlist response longer than requested\n");
1683 /* This is the interface between remote and threads, remotes upper interface */
1685 /* remote_find_new_threads retrieves the thread list and for each
1686 thread in the list, looks up the thread in GDB's internal list,
1687 ading the thread if it does not already exist. This involves
1688 getting partial thread lists from the remote target so, polling the
1689 quit_flag is required. */
1692 /* About this many threadisds fit in a packet. */
1694 #define MAXTHREADLISTRESULTS 32
1697 remote_threadlist_iterator (rmt_thread_action stepfunction
, void *context
,
1700 int done
, i
, result_count
;
1704 static threadref nextthread
;
1705 static threadref resultthreadlist
[MAXTHREADLISTRESULTS
];
1710 if (loopcount
++ > looplimit
)
1713 warning ("Remote fetch threadlist -infinite loop-\n");
1716 if (!remote_get_threadlist (startflag
, &nextthread
, MAXTHREADLISTRESULTS
,
1717 &done
, &result_count
, resultthreadlist
))
1722 /* clear for later iterations */
1724 /* Setup to resume next batch of thread references, set nextthread. */
1725 if (result_count
>= 1)
1726 copy_threadref (&nextthread
, &resultthreadlist
[result_count
- 1]);
1728 while (result_count
--)
1729 if (!(result
= (*stepfunction
) (&resultthreadlist
[i
++], context
)))
1736 remote_newthread_step (threadref
*ref
, void *context
)
1740 ptid
= pid_to_ptid (threadref_to_int (ref
));
1742 if (!in_thread_list (ptid
))
1744 return 1; /* continue iterator */
1747 #define CRAZY_MAX_THREADS 1000
1750 remote_current_thread (ptid_t oldpid
)
1752 struct remote_state
*rs
= get_remote_state ();
1753 char *buf
= alloca (rs
->remote_packet_size
);
1756 getpkt (buf
, (rs
->remote_packet_size
), 0);
1757 if (buf
[0] == 'Q' && buf
[1] == 'C')
1758 return pid_to_ptid (strtol (&buf
[2], NULL
, 16));
1763 /* Find new threads for info threads command.
1764 * Original version, using John Metzler's thread protocol.
1768 remote_find_new_threads (void)
1770 remote_threadlist_iterator (remote_newthread_step
, 0,
1772 if (PIDGET (inferior_ptid
) == MAGIC_NULL_PID
) /* ack ack ack */
1773 inferior_ptid
= remote_current_thread (inferior_ptid
);
1777 * Find all threads for info threads command.
1778 * Uses new thread protocol contributed by Cisco.
1779 * Falls back and attempts to use the older method (above)
1780 * if the target doesn't respond to the new method.
1784 remote_threads_info (void)
1786 struct remote_state
*rs
= get_remote_state ();
1787 char *buf
= alloca (rs
->remote_packet_size
);
1791 if (remote_desc
== 0) /* paranoia */
1792 error ("Command can only be used when connected to the remote target.");
1794 if (use_threadinfo_query
)
1796 putpkt ("qfThreadInfo");
1798 getpkt (bufp
, (rs
->remote_packet_size
), 0);
1799 if (bufp
[0] != '\0') /* q packet recognized */
1801 while (*bufp
++ == 'm') /* reply contains one or more TID */
1805 tid
= strtol (bufp
, &bufp
, 16);
1806 if (tid
!= 0 && !in_thread_list (pid_to_ptid (tid
)))
1807 add_thread (pid_to_ptid (tid
));
1809 while (*bufp
++ == ','); /* comma-separated list */
1810 putpkt ("qsThreadInfo");
1812 getpkt (bufp
, (rs
->remote_packet_size
), 0);
1818 /* Else fall back to old method based on jmetzler protocol. */
1819 use_threadinfo_query
= 0;
1820 remote_find_new_threads ();
1825 * Collect a descriptive string about the given thread.
1826 * The target may say anything it wants to about the thread
1827 * (typically info about its blocked / runnable state, name, etc.).
1828 * This string will appear in the info threads display.
1830 * Optional: targets are not required to implement this function.
1834 remote_threads_extra_info (struct thread_info
*tp
)
1836 struct remote_state
*rs
= get_remote_state ();
1840 struct gdb_ext_thread_info threadinfo
;
1841 static char display_buf
[100]; /* arbitrary... */
1842 char *bufp
= alloca (rs
->remote_packet_size
);
1843 int n
= 0; /* position in display_buf */
1845 if (remote_desc
== 0) /* paranoia */
1846 internal_error (__FILE__
, __LINE__
,
1847 "remote_threads_extra_info");
1849 if (use_threadextra_query
)
1851 sprintf (bufp
, "qThreadExtraInfo,%x", PIDGET (tp
->ptid
));
1853 getpkt (bufp
, (rs
->remote_packet_size
), 0);
1856 n
= min (strlen (bufp
) / 2, sizeof (display_buf
));
1857 result
= hex2bin (bufp
, display_buf
, n
);
1858 display_buf
[result
] = '\0';
1863 /* If the above query fails, fall back to the old method. */
1864 use_threadextra_query
= 0;
1865 set
= TAG_THREADID
| TAG_EXISTS
| TAG_THREADNAME
1866 | TAG_MOREDISPLAY
| TAG_DISPLAY
;
1867 int_to_threadref (&id
, PIDGET (tp
->ptid
));
1868 if (remote_get_threadinfo (&id
, set
, &threadinfo
))
1869 if (threadinfo
.active
)
1871 if (*threadinfo
.shortname
)
1872 n
+= sprintf(&display_buf
[0], " Name: %s,", threadinfo
.shortname
);
1873 if (*threadinfo
.display
)
1874 n
+= sprintf(&display_buf
[n
], " State: %s,", threadinfo
.display
);
1875 if (*threadinfo
.more_display
)
1876 n
+= sprintf(&display_buf
[n
], " Priority: %s",
1877 threadinfo
.more_display
);
1881 /* for purely cosmetic reasons, clear up trailing commas */
1882 if (',' == display_buf
[n
-1])
1883 display_buf
[n
-1] = ' ';
1892 /* Restart the remote side; this is an extended protocol operation. */
1895 extended_remote_restart (void)
1897 struct remote_state
*rs
= get_remote_state ();
1898 char *buf
= alloca (rs
->remote_packet_size
);
1900 /* Send the restart command; for reasons I don't understand the
1901 remote side really expects a number after the "R". */
1903 sprintf (&buf
[1], "%x", 0);
1906 /* Now query for status so this looks just like we restarted
1907 gdbserver from scratch. */
1909 getpkt (buf
, (rs
->remote_packet_size
), 0);
1912 /* Clean up connection to a remote debugger. */
1916 remote_close (int quitting
)
1919 serial_close (remote_desc
);
1923 /* Query the remote side for the text, data and bss offsets. */
1928 struct remote_state
*rs
= get_remote_state ();
1929 char *buf
= alloca (rs
->remote_packet_size
);
1932 CORE_ADDR text_addr
, data_addr
, bss_addr
;
1933 struct section_offsets
*offs
;
1935 putpkt ("qOffsets");
1937 getpkt (buf
, (rs
->remote_packet_size
), 0);
1939 if (buf
[0] == '\000')
1940 return; /* Return silently. Stub doesn't support
1944 warning ("Remote failure reply: %s", buf
);
1948 /* Pick up each field in turn. This used to be done with scanf, but
1949 scanf will make trouble if CORE_ADDR size doesn't match
1950 conversion directives correctly. The following code will work
1951 with any size of CORE_ADDR. */
1952 text_addr
= data_addr
= bss_addr
= 0;
1956 if (strncmp (ptr
, "Text=", 5) == 0)
1959 /* Don't use strtol, could lose on big values. */
1960 while (*ptr
&& *ptr
!= ';')
1961 text_addr
= (text_addr
<< 4) + fromhex (*ptr
++);
1966 if (!lose
&& strncmp (ptr
, ";Data=", 6) == 0)
1969 while (*ptr
&& *ptr
!= ';')
1970 data_addr
= (data_addr
<< 4) + fromhex (*ptr
++);
1975 if (!lose
&& strncmp (ptr
, ";Bss=", 5) == 0)
1978 while (*ptr
&& *ptr
!= ';')
1979 bss_addr
= (bss_addr
<< 4) + fromhex (*ptr
++);
1985 error ("Malformed response to offset query, %s", buf
);
1987 if (symfile_objfile
== NULL
)
1990 offs
= ((struct section_offsets
*)
1991 alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
)));
1992 memcpy (offs
, symfile_objfile
->section_offsets
,
1993 SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
));
1995 offs
->offsets
[SECT_OFF_TEXT (symfile_objfile
)] = text_addr
;
1997 /* This is a temporary kludge to force data and bss to use the same offsets
1998 because that's what nlmconv does now. The real solution requires changes
1999 to the stub and remote.c that I don't have time to do right now. */
2001 offs
->offsets
[SECT_OFF_DATA (symfile_objfile
)] = data_addr
;
2002 offs
->offsets
[SECT_OFF_BSS (symfile_objfile
)] = data_addr
;
2004 objfile_relocate (symfile_objfile
, offs
);
2008 * Cisco version of section offsets:
2010 * Instead of having GDB query the target for the section offsets,
2011 * Cisco lets the target volunteer the information! It's also in
2012 * a different format, so here are the functions that will decode
2013 * a section offset packet from a Cisco target.
2017 * Function: remote_cisco_section_offsets
2019 * Returns: zero for success, non-zero for failure
2023 remote_cisco_section_offsets (bfd_vma text_addr
,
2026 bfd_signed_vma
*text_offs
,
2027 bfd_signed_vma
*data_offs
,
2028 bfd_signed_vma
*bss_offs
)
2030 bfd_vma text_base
, data_base
, bss_base
;
2031 struct minimal_symbol
*start
;
2036 if (symfile_objfile
== NULL
)
2037 return -1; /* no can do nothin' */
2039 start
= lookup_minimal_symbol ("_start", NULL
, NULL
);
2041 return -1; /* Can't find "_start" symbol */
2043 data_base
= bss_base
= 0;
2044 text_base
= SYMBOL_VALUE_ADDRESS (start
);
2046 abfd
= symfile_objfile
->obfd
;
2047 for (sect
= abfd
->sections
;
2051 const char *p
= bfd_get_section_name (abfd
, sect
);
2053 if (strcmp (p
+ len
- 4, "data") == 0) /* ends in "data" */
2054 if (data_base
== 0 ||
2055 data_base
> bfd_get_section_vma (abfd
, sect
))
2056 data_base
= bfd_get_section_vma (abfd
, sect
);
2057 if (strcmp (p
+ len
- 3, "bss") == 0) /* ends in "bss" */
2058 if (bss_base
== 0 ||
2059 bss_base
> bfd_get_section_vma (abfd
, sect
))
2060 bss_base
= bfd_get_section_vma (abfd
, sect
);
2062 *text_offs
= text_addr
- text_base
;
2063 *data_offs
= data_addr
- data_base
;
2064 *bss_offs
= bss_addr
- bss_base
;
2069 sprintf (tmp
, "VMA: text = 0x");
2070 sprintf_vma (tmp
+ strlen (tmp
), text_addr
);
2071 sprintf (tmp
+ strlen (tmp
), " data = 0x");
2072 sprintf_vma (tmp
+ strlen (tmp
), data_addr
);
2073 sprintf (tmp
+ strlen (tmp
), " bss = 0x");
2074 sprintf_vma (tmp
+ strlen (tmp
), bss_addr
);
2075 fprintf_filtered (gdb_stdlog
, tmp
);
2076 fprintf_filtered (gdb_stdlog
,
2077 "Reloc offset: text = 0x%s data = 0x%s bss = 0x%s\n",
2078 paddr_nz (*text_offs
),
2079 paddr_nz (*data_offs
),
2080 paddr_nz (*bss_offs
));
2087 * Function: remote_cisco_objfile_relocate
2089 * Relocate the symbol file for a remote target.
2093 remote_cisco_objfile_relocate (bfd_signed_vma text_off
, bfd_signed_vma data_off
,
2094 bfd_signed_vma bss_off
)
2096 struct section_offsets
*offs
;
2098 if (text_off
!= 0 || data_off
!= 0 || bss_off
!= 0)
2100 /* FIXME: This code assumes gdb-stabs.h is being used; it's
2101 broken for xcoff, dwarf, sdb-coff, etc. But there is no
2102 simple canonical representation for this stuff. */
2104 offs
= (struct section_offsets
*)
2105 alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
));
2106 memcpy (offs
, symfile_objfile
->section_offsets
,
2107 SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
));
2109 offs
->offsets
[SECT_OFF_TEXT (symfile_objfile
)] = text_off
;
2110 offs
->offsets
[SECT_OFF_DATA (symfile_objfile
)] = data_off
;
2111 offs
->offsets
[SECT_OFF_BSS (symfile_objfile
)] = bss_off
;
2113 /* First call the standard objfile_relocate. */
2114 objfile_relocate (symfile_objfile
, offs
);
2116 /* Now we need to fix up the section entries already attached to
2117 the exec target. These entries will control memory transfers
2118 from the exec file. */
2120 exec_set_section_offsets (text_off
, data_off
, bss_off
);
2124 /* Stub for catch_errors. */
2127 remote_start_remote_dummy (struct ui_out
*uiout
, void *dummy
)
2129 start_remote (); /* Initialize gdb process mechanisms */
2130 /* NOTE: Return something >=0. A -ve value is reserved for
2131 catch_exceptions. */
2136 remote_start_remote (struct ui_out
*uiout
, void *dummy
)
2138 immediate_quit
++; /* Allow user to interrupt it */
2140 /* Ack any packet which the remote side has already sent. */
2141 serial_write (remote_desc
, "+", 1);
2143 /* Let the stub know that we want it to return the thread. */
2146 inferior_ptid
= remote_current_thread (inferior_ptid
);
2148 get_offsets (); /* Get text, data & bss offsets */
2150 putpkt ("?"); /* initiate a query from remote machine */
2153 /* NOTE: See comment above in remote_start_remote_dummy(). This
2154 function returns something >=0. */
2155 return remote_start_remote_dummy (uiout
, dummy
);
2158 /* Open a connection to a remote debugger.
2159 NAME is the filename used for communication. */
2162 remote_open (char *name
, int from_tty
)
2164 remote_open_1 (name
, from_tty
, &remote_ops
, 0, 0);
2167 /* Just like remote_open, but with asynchronous support. */
2169 remote_async_open (char *name
, int from_tty
)
2171 remote_open_1 (name
, from_tty
, &remote_async_ops
, 0, 1);
2174 /* Open a connection to a remote debugger using the extended
2175 remote gdb protocol. NAME is the filename used for communication. */
2178 extended_remote_open (char *name
, int from_tty
)
2180 remote_open_1 (name
, from_tty
, &extended_remote_ops
, 1 /*extended_p */,
2184 /* Just like extended_remote_open, but with asynchronous support. */
2186 extended_remote_async_open (char *name
, int from_tty
)
2188 remote_open_1 (name
, from_tty
, &extended_async_remote_ops
,
2189 1 /*extended_p */, 1 /* async_p */);
2192 /* Generic code for opening a connection to a remote target. */
2195 init_all_packet_configs (void)
2198 update_packet_config (&remote_protocol_e
);
2199 update_packet_config (&remote_protocol_E
);
2200 update_packet_config (&remote_protocol_P
);
2201 update_packet_config (&remote_protocol_qSymbol
);
2202 for (i
= 0; i
< NR_Z_PACKET_TYPES
; i
++)
2203 update_packet_config (&remote_protocol_Z
[i
]);
2204 /* Force remote_write_bytes to check whether target supports binary
2206 update_packet_config (&remote_protocol_binary_download
);
2209 /* Symbol look-up. */
2212 remote_check_symbols (struct objfile
*objfile
)
2214 struct remote_state
*rs
= get_remote_state ();
2215 char *msg
, *reply
, *tmp
;
2216 struct minimal_symbol
*sym
;
2219 if (remote_protocol_qSymbol
.support
== PACKET_DISABLE
)
2222 msg
= alloca (rs
->remote_packet_size
);
2223 reply
= alloca (rs
->remote_packet_size
);
2225 /* Invite target to request symbol lookups. */
2227 putpkt ("qSymbol::");
2228 getpkt (reply
, (rs
->remote_packet_size
), 0);
2229 packet_ok (reply
, &remote_protocol_qSymbol
);
2231 while (strncmp (reply
, "qSymbol:", 8) == 0)
2234 end
= hex2bin (tmp
, msg
, strlen (tmp
) / 2);
2236 sym
= lookup_minimal_symbol (msg
, NULL
, NULL
);
2238 sprintf (msg
, "qSymbol::%s", &reply
[8]);
2240 sprintf (msg
, "qSymbol:%s:%s",
2241 paddr_nz (SYMBOL_VALUE_ADDRESS (sym
)),
2244 getpkt (reply
, (rs
->remote_packet_size
), 0);
2248 static struct serial
*
2249 remote_serial_open (char *name
)
2251 static int udp_warning
= 0;
2253 /* FIXME: Parsing NAME here is a hack. But we want to warn here instead
2254 of in ser-tcp.c, because it is the remote protocol assuming that the
2255 serial connection is reliable and not the serial connection promising
2257 if (!udp_warning
&& strncmp (name
, "udp:", 4) == 0)
2259 warning ("The remote protocol may be unreliable over UDP.");
2260 warning ("Some events may be lost, rendering further debugging "
2265 return serial_open (name
);
2269 remote_open_1 (char *name
, int from_tty
, struct target_ops
*target
,
2270 int extended_p
, int async_p
)
2273 struct remote_state
*rs
= get_remote_state ();
2275 error ("To open a remote debug connection, you need to specify what\n"
2276 "serial device is attached to the remote system\n"
2277 "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).");
2279 /* See FIXME above */
2281 wait_forever_enabled_p
= 1;
2283 target_preopen (from_tty
);
2285 unpush_target (target
);
2287 remote_desc
= remote_serial_open (name
);
2289 perror_with_name (name
);
2291 if (baud_rate
!= -1)
2293 if (serial_setbaudrate (remote_desc
, baud_rate
))
2295 serial_close (remote_desc
);
2296 perror_with_name (name
);
2300 serial_raw (remote_desc
);
2302 /* If there is something sitting in the buffer we might take it as a
2303 response to a command, which would be bad. */
2304 serial_flush_input (remote_desc
);
2308 puts_filtered ("Remote debugging using ");
2309 puts_filtered (name
);
2310 puts_filtered ("\n");
2312 push_target (target
); /* Switch to using remote target now */
2314 init_all_packet_configs ();
2316 general_thread
= -2;
2317 continue_thread
= -2;
2319 /* Probe for ability to use "ThreadInfo" query, as required. */
2320 use_threadinfo_query
= 1;
2321 use_threadextra_query
= 1;
2323 /* Without this, some commands which require an active target (such
2324 as kill) won't work. This variable serves (at least) double duty
2325 as both the pid of the target process (if it has such), and as a
2326 flag indicating that a target is active. These functions should
2327 be split out into seperate variables, especially since GDB will
2328 someday have a notion of debugging several processes. */
2330 inferior_ptid
= pid_to_ptid (MAGIC_NULL_PID
);
2334 /* With this target we start out by owning the terminal. */
2335 remote_async_terminal_ours_p
= 1;
2337 /* FIXME: cagney/1999-09-23: During the initial connection it is
2338 assumed that the target is already ready and able to respond to
2339 requests. Unfortunately remote_start_remote() eventually calls
2340 wait_for_inferior() with no timeout. wait_forever_enabled_p gets
2341 around this. Eventually a mechanism that allows
2342 wait_for_inferior() to expect/get timeouts will be
2344 wait_forever_enabled_p
= 0;
2347 #ifdef SOLIB_CREATE_INFERIOR_HOOK
2348 /* First delete any symbols previously loaded from shared libraries. */
2349 no_shared_libraries (NULL
, 0);
2352 /* Start the remote connection. If error() or QUIT, discard this
2353 target (we'd otherwise be in an inconsistent state) and then
2354 propogate the error on up the exception chain. This ensures that
2355 the caller doesn't stumble along blindly assuming that the
2356 function succeeded. The CLI doesn't have this problem but other
2357 UI's, such as MI do.
2359 FIXME: cagney/2002-05-19: Instead of re-throwing the exception,
2360 this function should return an error indication letting the
2361 caller restore the previous state. Unfortunatly the command
2362 ``target remote'' is directly wired to this function making that
2363 impossible. On a positive note, the CLI side of this problem has
2364 been fixed - the function set_cmd_context() makes it possible for
2365 all the ``target ....'' commands to share a common callback
2366 function. See cli-dump.c. */
2367 ex
= catch_exceptions (uiout
,
2368 remote_start_remote
, NULL
,
2369 "Couldn't establish connection to remote"
2376 wait_forever_enabled_p
= 1;
2377 throw_exception (ex
);
2381 wait_forever_enabled_p
= 1;
2385 /* Tell the remote that we are using the extended protocol. */
2386 char *buf
= alloca (rs
->remote_packet_size
);
2388 getpkt (buf
, (rs
->remote_packet_size
), 0);
2390 #ifdef SOLIB_CREATE_INFERIOR_HOOK
2391 /* FIXME: need a master target_open vector from which all
2392 remote_opens can be called, so that stuff like this can
2393 go there. Failing that, the following code must be copied
2394 to the open function for any remote target that wants to
2395 support svr4 shared libraries. */
2397 /* Set up to detect and load shared libraries. */
2398 if (exec_bfd
) /* No use without an exec file. */
2400 SOLIB_CREATE_INFERIOR_HOOK (PIDGET (inferior_ptid
));
2401 remote_check_symbols (symfile_objfile
);
2406 /* This takes a program previously attached to and detaches it. After
2407 this is done, GDB can be used to debug some other program. We
2408 better not have left any breakpoints in the target program or it'll
2409 die when it hits one. */
2412 remote_detach (char *args
, int from_tty
)
2414 struct remote_state
*rs
= get_remote_state ();
2415 char *buf
= alloca (rs
->remote_packet_size
);
2418 error ("Argument given to \"detach\" when remotely debugging.");
2420 /* Tell the remote target to detach. */
2422 remote_send (buf
, (rs
->remote_packet_size
));
2424 target_mourn_inferior ();
2426 puts_filtered ("Ending remote debugging.\n");
2430 /* Same as remote_detach, but with async support. */
2432 remote_async_detach (char *args
, int from_tty
)
2434 struct remote_state
*rs
= get_remote_state ();
2435 char *buf
= alloca (rs
->remote_packet_size
);
2438 error ("Argument given to \"detach\" when remotely debugging.");
2440 /* Tell the remote target to detach. */
2442 remote_send (buf
, (rs
->remote_packet_size
));
2444 /* Unregister the file descriptor from the event loop. */
2445 if (target_is_async_p ())
2446 serial_async (remote_desc
, NULL
, 0);
2448 target_mourn_inferior ();
2450 puts_filtered ("Ending remote debugging.\n");
2453 /* Convert hex digit A to a number. */
2458 if (a
>= '0' && a
<= '9')
2460 else if (a
>= 'a' && a
<= 'f')
2461 return a
- 'a' + 10;
2462 else if (a
>= 'A' && a
<= 'F')
2463 return a
- 'A' + 10;
2465 error ("Reply contains invalid hex digit %d", a
);
2469 hex2bin (const char *hex
, char *bin
, int count
)
2473 for (i
= 0; i
< count
; i
++)
2475 if (hex
[0] == 0 || hex
[1] == 0)
2477 /* Hex string is short, or of uneven length.
2478 Return the count that has been converted so far. */
2481 *bin
++ = fromhex (hex
[0]) * 16 + fromhex (hex
[1]);
2487 /* Convert number NIB to a hex digit. */
2495 return 'a' + nib
- 10;
2499 bin2hex (const char *bin
, char *hex
, int count
)
2502 /* May use a length, or a nul-terminated string as input. */
2504 count
= strlen (bin
);
2506 for (i
= 0; i
< count
; i
++)
2508 *hex
++ = tohex ((*bin
>> 4) & 0xf);
2509 *hex
++ = tohex (*bin
++ & 0xf);
2515 /* Tell the remote machine to resume. */
2517 static enum target_signal last_sent_signal
= TARGET_SIGNAL_0
;
2519 static int last_sent_step
;
2522 remote_resume (ptid_t ptid
, int step
, enum target_signal siggnal
)
2524 struct remote_state
*rs
= get_remote_state ();
2525 char *buf
= alloca (rs
->remote_packet_size
);
2526 int pid
= PIDGET (ptid
);
2530 set_thread (0, 0); /* run any thread */
2532 set_thread (pid
, 0); /* run this thread */
2534 last_sent_signal
= siggnal
;
2535 last_sent_step
= step
;
2537 /* A hook for when we need to do something at the last moment before
2539 if (target_resume_hook
)
2540 (*target_resume_hook
) ();
2543 /* The s/S/c/C packets do not return status. So if the target does
2544 not support the S or C packets, the debug agent returns an empty
2545 string which is detected in remote_wait(). This protocol defect
2546 is fixed in the e/E packets. */
2548 if (step
&& step_range_end
)
2550 /* If the target does not support the 'E' packet, we try the 'S'
2551 packet. Ideally we would fall back to the 'e' packet if that
2552 too is not supported. But that would require another copy of
2553 the code to issue the 'e' packet (and fall back to 's' if not
2554 supported) in remote_wait(). */
2556 if (siggnal
!= TARGET_SIGNAL_0
)
2558 if (remote_protocol_E
.support
!= PACKET_DISABLE
)
2562 *p
++ = tohex (((int) siggnal
>> 4) & 0xf);
2563 *p
++ = tohex (((int) siggnal
) & 0xf);
2565 p
+= hexnumstr (p
, (ULONGEST
) step_range_start
);
2567 p
+= hexnumstr (p
, (ULONGEST
) step_range_end
);
2571 getpkt (buf
, (rs
->remote_packet_size
), 0);
2573 if (packet_ok (buf
, &remote_protocol_E
) == PACKET_OK
)
2579 if (remote_protocol_e
.support
!= PACKET_DISABLE
)
2583 p
+= hexnumstr (p
, (ULONGEST
) step_range_start
);
2585 p
+= hexnumstr (p
, (ULONGEST
) step_range_end
);
2589 getpkt (buf
, (rs
->remote_packet_size
), 0);
2591 if (packet_ok (buf
, &remote_protocol_e
) == PACKET_OK
)
2597 if (siggnal
!= TARGET_SIGNAL_0
)
2599 buf
[0] = step
? 'S' : 'C';
2600 buf
[1] = tohex (((int) siggnal
>> 4) & 0xf);
2601 buf
[2] = tohex (((int) siggnal
) & 0xf);
2605 strcpy (buf
, step
? "s" : "c");
2610 /* Same as remote_resume, but with async support. */
2612 remote_async_resume (ptid_t ptid
, int step
, enum target_signal siggnal
)
2614 struct remote_state
*rs
= get_remote_state ();
2615 char *buf
= alloca (rs
->remote_packet_size
);
2616 int pid
= PIDGET (ptid
);
2620 set_thread (0, 0); /* run any thread */
2622 set_thread (pid
, 0); /* run this thread */
2624 last_sent_signal
= siggnal
;
2625 last_sent_step
= step
;
2627 /* A hook for when we need to do something at the last moment before
2629 if (target_resume_hook
)
2630 (*target_resume_hook
) ();
2632 /* The s/S/c/C packets do not return status. So if the target does
2633 not support the S or C packets, the debug agent returns an empty
2634 string which is detected in remote_wait(). This protocol defect
2635 is fixed in the e/E packets. */
2637 if (step
&& step_range_end
)
2639 /* If the target does not support the 'E' packet, we try the 'S'
2640 packet. Ideally we would fall back to the 'e' packet if that
2641 too is not supported. But that would require another copy of
2642 the code to issue the 'e' packet (and fall back to 's' if not
2643 supported) in remote_wait(). */
2645 if (siggnal
!= TARGET_SIGNAL_0
)
2647 if (remote_protocol_E
.support
!= PACKET_DISABLE
)
2651 *p
++ = tohex (((int) siggnal
>> 4) & 0xf);
2652 *p
++ = tohex (((int) siggnal
) & 0xf);
2654 p
+= hexnumstr (p
, (ULONGEST
) step_range_start
);
2656 p
+= hexnumstr (p
, (ULONGEST
) step_range_end
);
2660 getpkt (buf
, (rs
->remote_packet_size
), 0);
2662 if (packet_ok (buf
, &remote_protocol_E
) == PACKET_OK
)
2663 goto register_event_loop
;
2668 if (remote_protocol_e
.support
!= PACKET_DISABLE
)
2672 p
+= hexnumstr (p
, (ULONGEST
) step_range_start
);
2674 p
+= hexnumstr (p
, (ULONGEST
) step_range_end
);
2678 getpkt (buf
, (rs
->remote_packet_size
), 0);
2680 if (packet_ok (buf
, &remote_protocol_e
) == PACKET_OK
)
2681 goto register_event_loop
;
2686 if (siggnal
!= TARGET_SIGNAL_0
)
2688 buf
[0] = step
? 'S' : 'C';
2689 buf
[1] = tohex (((int) siggnal
>> 4) & 0xf);
2690 buf
[2] = tohex ((int) siggnal
& 0xf);
2694 strcpy (buf
, step
? "s" : "c");
2698 register_event_loop
:
2699 /* We are about to start executing the inferior, let's register it
2700 with the event loop. NOTE: this is the one place where all the
2701 execution commands end up. We could alternatively do this in each
2702 of the execution commands in infcmd.c.*/
2703 /* FIXME: ezannoni 1999-09-28: We may need to move this out of here
2704 into infcmd.c in order to allow inferior function calls to work
2705 NOT asynchronously. */
2706 if (event_loop_p
&& target_can_async_p ())
2707 target_async (inferior_event_handler
, 0);
2708 /* Tell the world that the target is now executing. */
2709 /* FIXME: cagney/1999-09-23: Is it the targets responsibility to set
2710 this? Instead, should the client of target just assume (for
2711 async targets) that the target is going to start executing? Is
2712 this information already found in the continuation block? */
2713 if (target_is_async_p ())
2714 target_executing
= 1;
2718 /* Set up the signal handler for SIGINT, while the target is
2719 executing, ovewriting the 'regular' SIGINT signal handler. */
2721 initialize_sigint_signal_handler (void)
2723 sigint_remote_token
=
2724 create_async_signal_handler (async_remote_interrupt
, NULL
);
2725 signal (SIGINT
, handle_remote_sigint
);
2728 /* Signal handler for SIGINT, while the target is executing. */
2730 handle_remote_sigint (int sig
)
2732 signal (sig
, handle_remote_sigint_twice
);
2733 sigint_remote_twice_token
=
2734 create_async_signal_handler (async_remote_interrupt_twice
, NULL
);
2735 mark_async_signal_handler_wrapper (sigint_remote_token
);
2738 /* Signal handler for SIGINT, installed after SIGINT has already been
2739 sent once. It will take effect the second time that the user sends
2742 handle_remote_sigint_twice (int sig
)
2744 signal (sig
, handle_sigint
);
2745 sigint_remote_twice_token
=
2746 create_async_signal_handler (inferior_event_handler_wrapper
, NULL
);
2747 mark_async_signal_handler_wrapper (sigint_remote_twice_token
);
2750 /* Perform the real interruption of the target execution, in response
2753 async_remote_interrupt (gdb_client_data arg
)
2756 fprintf_unfiltered (gdb_stdlog
, "remote_interrupt called\n");
2761 /* Perform interrupt, if the first attempt did not succeed. Just give
2762 up on the target alltogether. */
2764 async_remote_interrupt_twice (gdb_client_data arg
)
2767 fprintf_unfiltered (gdb_stdlog
, "remote_interrupt_twice called\n");
2768 /* Do something only if the target was not killed by the previous
2770 if (target_executing
)
2773 signal (SIGINT
, handle_remote_sigint
);
2777 /* Reinstall the usual SIGINT handlers, after the target has
2780 cleanup_sigint_signal_handler (void *dummy
)
2782 signal (SIGINT
, handle_sigint
);
2783 if (sigint_remote_twice_token
)
2784 delete_async_signal_handler ((struct async_signal_handler
**) & sigint_remote_twice_token
);
2785 if (sigint_remote_token
)
2786 delete_async_signal_handler ((struct async_signal_handler
**) & sigint_remote_token
);
2789 /* Send ^C to target to halt it. Target will respond, and send us a
2791 static void (*ofunc
) (int);
2793 /* The command line interface's stop routine. This function is installed
2794 as a signal handler for SIGINT. The first time a user requests a
2795 stop, we call remote_stop to send a break or ^C. If there is no
2796 response from the target (it didn't stop when the user requested it),
2797 we ask the user if he'd like to detach from the target. */
2799 remote_interrupt (int signo
)
2801 /* If this doesn't work, try more severe steps. */
2802 signal (signo
, remote_interrupt_twice
);
2805 fprintf_unfiltered (gdb_stdlog
, "remote_interrupt called\n");
2810 /* The user typed ^C twice. */
2813 remote_interrupt_twice (int signo
)
2815 signal (signo
, ofunc
);
2817 signal (signo
, remote_interrupt
);
2820 /* This is the generic stop called via the target vector. When a target
2821 interrupt is requested, either by the command line or the GUI, we
2822 will eventually end up here. */
2826 /* Send a break or a ^C, depending on user preference. */
2828 fprintf_unfiltered (gdb_stdlog
, "remote_stop called\n");
2831 serial_send_break (remote_desc
);
2833 serial_write (remote_desc
, "\003", 1);
2836 /* Ask the user what to do when an interrupt is received. */
2839 interrupt_query (void)
2841 target_terminal_ours ();
2843 if (query ("Interrupted while waiting for the program.\n\
2844 Give up (and stop debugging it)? "))
2846 target_mourn_inferior ();
2847 throw_exception (RETURN_QUIT
);
2850 target_terminal_inferior ();
2853 /* Enable/disable target terminal ownership. Most targets can use
2854 terminal groups to control terminal ownership. Remote targets are
2855 different in that explicit transfer of ownership to/from GDB/target
2859 remote_async_terminal_inferior (void)
2861 /* FIXME: cagney/1999-09-27: Shouldn't need to test for
2862 sync_execution here. This function should only be called when
2863 GDB is resuming the inferior in the forground. A background
2864 resume (``run&'') should leave GDB in control of the terminal and
2865 consequently should not call this code. */
2866 if (!sync_execution
)
2868 /* FIXME: cagney/1999-09-27: Closely related to the above. Make
2869 calls target_terminal_*() idenpotent. The event-loop GDB talking
2870 to an asynchronous target with a synchronous command calls this
2871 function from both event-top.c and infrun.c/infcmd.c. Once GDB
2872 stops trying to transfer the terminal to the target when it
2873 shouldn't this guard can go away. */
2874 if (!remote_async_terminal_ours_p
)
2876 delete_file_handler (input_fd
);
2877 remote_async_terminal_ours_p
= 0;
2878 initialize_sigint_signal_handler ();
2879 /* NOTE: At this point we could also register our selves as the
2880 recipient of all input. Any characters typed could then be
2881 passed on down to the target. */
2885 remote_async_terminal_ours (void)
2887 /* See FIXME in remote_async_terminal_inferior. */
2888 if (!sync_execution
)
2890 /* See FIXME in remote_async_terminal_inferior. */
2891 if (remote_async_terminal_ours_p
)
2893 cleanup_sigint_signal_handler (NULL
);
2894 add_file_handler (input_fd
, stdin_event_handler
, 0);
2895 remote_async_terminal_ours_p
= 1;
2898 /* If nonzero, ignore the next kill. */
2903 remote_console_output (char *msg
)
2907 for (p
= msg
; p
[0] && p
[1]; p
+= 2)
2910 char c
= fromhex (p
[0]) * 16 + fromhex (p
[1]);
2913 fputs_unfiltered (tb
, gdb_stdtarg
);
2915 gdb_flush (gdb_stdtarg
);
2918 /* Wait until the remote machine stops, then return,
2919 storing status in STATUS just as `wait' would.
2920 Returns "pid", which in the case of a multi-threaded
2921 remote OS, is the thread-id. */
2924 remote_wait (ptid_t ptid
, struct target_waitstatus
*status
)
2926 struct remote_state
*rs
= get_remote_state ();
2927 unsigned char *buf
= alloca (rs
->remote_packet_size
);
2928 ULONGEST thread_num
= -1;
2931 status
->kind
= TARGET_WAITKIND_EXITED
;
2932 status
->value
.integer
= 0;
2938 ofunc
= signal (SIGINT
, remote_interrupt
);
2939 getpkt (buf
, (rs
->remote_packet_size
), 1);
2940 signal (SIGINT
, ofunc
);
2942 /* This is a hook for when we need to do something (perhaps the
2943 collection of trace data) every time the target stops. */
2944 if (target_wait_loop_hook
)
2945 (*target_wait_loop_hook
) ();
2947 remote_stopped_by_watchpoint_p
= 0;
2951 case 'E': /* Error of some sort */
2952 warning ("Remote failure reply: %s", buf
);
2954 case 'F': /* File-I/O request */
2955 remote_fileio_request (buf
);
2957 case 'T': /* Status with PC, SP, FP, ... */
2960 char regs
[MAX_REGISTER_SIZE
];
2962 /* Expedited reply, containing Signal, {regno, reg} repeat */
2963 /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where
2965 n... = register number
2966 r... = register contents
2968 p
= &buf
[3]; /* after Txx */
2977 /* If the packet contains a register number save it in pnum
2978 and set p1 to point to the character following it.
2979 Otherwise p1 points to p. */
2981 /* If this packet is an awatch packet, don't parse the 'a'
2982 as a register number. */
2984 if (strncmp (p
, "awatch", strlen("awatch")) != 0)
2986 /* Read the ``P'' register number. */
2987 pnum
= strtol (p
, &p_temp
, 16);
2988 p1
= (unsigned char *) p_temp
;
2993 if (p1
== p
) /* No register number present here */
2995 p1
= (unsigned char *) strchr (p
, ':');
2997 warning ("Malformed packet(a) (missing colon): %s\n\
3000 if (strncmp (p
, "thread", p1
- p
) == 0)
3002 p_temp
= unpack_varlen_hex (++p1
, &thread_num
);
3003 record_currthread (thread_num
);
3004 p
= (unsigned char *) p_temp
;
3006 else if ((strncmp (p
, "watch", p1
- p
) == 0)
3007 || (strncmp (p
, "rwatch", p1
- p
) == 0)
3008 || (strncmp (p
, "awatch", p1
- p
) == 0))
3010 remote_stopped_by_watchpoint_p
= 1;
3011 p
= unpack_varlen_hex (++p1
, &addr
);
3012 remote_watch_data_address
= (CORE_ADDR
)addr
;
3016 /* Silently skip unknown optional info. */
3017 p_temp
= strchr (p1
+ 1, ';');
3019 p
= (unsigned char *) p_temp
;
3024 struct packet_reg
*reg
= packet_reg_from_pnum (rs
, pnum
);
3028 warning ("Malformed packet(b) (missing colon): %s\n\
3033 warning ("Remote sent bad register number %s: %s\n\
3035 phex_nz (pnum
, 0), p
, buf
);
3037 fieldsize
= hex2bin (p
, regs
, REGISTER_RAW_SIZE (reg
->regnum
));
3039 if (fieldsize
< REGISTER_RAW_SIZE (reg
->regnum
))
3040 warning ("Remote reply is too short: %s", buf
);
3041 supply_register (reg
->regnum
, regs
);
3046 warning ("Remote register badly formatted: %s", buf
);
3047 warning (" here: %s", p
);
3052 case 'S': /* Old style status, just signal only */
3053 status
->kind
= TARGET_WAITKIND_STOPPED
;
3054 status
->value
.sig
= (enum target_signal
)
3055 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
3059 /* Export Cisco kernel mode as a convenience variable
3060 (so that it can be used in the GDB prompt if desired). */
3062 if (cisco_kernel_mode
== 1)
3063 set_internalvar (lookup_internalvar ("cisco_kernel_mode"),
3064 value_from_string ("PDEBUG-"));
3065 cisco_kernel_mode
= 0;
3066 thread_num
= strtol ((const char *) &buf
[4], NULL
, 16);
3067 record_currthread (thread_num
);
3069 else if (buf
[3] == 'k')
3071 /* Export Cisco kernel mode as a convenience variable
3072 (so that it can be used in the GDB prompt if desired). */
3074 if (cisco_kernel_mode
== 1)
3075 set_internalvar (lookup_internalvar ("cisco_kernel_mode"),
3076 value_from_string ("KDEBUG-"));
3077 cisco_kernel_mode
= 1;
3080 case 'N': /* Cisco special: status and offsets */
3082 bfd_vma text_addr
, data_addr
, bss_addr
;
3083 bfd_signed_vma text_off
, data_off
, bss_off
;
3086 status
->kind
= TARGET_WAITKIND_STOPPED
;
3087 status
->value
.sig
= (enum target_signal
)
3088 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
3090 if (symfile_objfile
== NULL
)
3092 warning ("Relocation packet received with no symbol file. \
3097 /* Relocate object file. Buffer format is NAATT;DD;BB
3098 * where AA is the signal number, TT is the new text
3099 * address, DD * is the new data address, and BB is the
3100 * new bss address. */
3103 text_addr
= strtoul (p
, (char **) &p1
, 16);
3104 if (p1
== p
|| *p1
!= ';')
3105 warning ("Malformed relocation packet: Packet '%s'", buf
);
3107 data_addr
= strtoul (p
, (char **) &p1
, 16);
3108 if (p1
== p
|| *p1
!= ';')
3109 warning ("Malformed relocation packet: Packet '%s'", buf
);
3111 bss_addr
= strtoul (p
, (char **) &p1
, 16);
3113 warning ("Malformed relocation packet: Packet '%s'", buf
);
3115 if (remote_cisco_section_offsets (text_addr
, data_addr
, bss_addr
,
3116 &text_off
, &data_off
, &bss_off
)
3118 if (text_off
!= 0 || data_off
!= 0 || bss_off
!= 0)
3119 remote_cisco_objfile_relocate (text_off
, data_off
, bss_off
);
3123 case 'W': /* Target exited */
3125 /* The remote process exited. */
3126 status
->kind
= TARGET_WAITKIND_EXITED
;
3127 status
->value
.integer
= (fromhex (buf
[1]) << 4) + fromhex (buf
[2]);
3131 status
->kind
= TARGET_WAITKIND_SIGNALLED
;
3132 status
->value
.sig
= (enum target_signal
)
3133 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
3137 case 'O': /* Console output */
3138 remote_console_output (buf
+ 1);
3141 if (last_sent_signal
!= TARGET_SIGNAL_0
)
3143 /* Zero length reply means that we tried 'S' or 'C' and
3144 the remote system doesn't support it. */
3145 target_terminal_ours_for_output ();
3147 ("Can't send signals to this remote system. %s not sent.\n",
3148 target_signal_to_name (last_sent_signal
));
3149 last_sent_signal
= TARGET_SIGNAL_0
;
3150 target_terminal_inferior ();
3152 strcpy ((char *) buf
, last_sent_step
? "s" : "c");
3153 putpkt ((char *) buf
);
3156 /* else fallthrough */
3158 warning ("Invalid remote reply: %s", buf
);
3163 if (thread_num
!= -1)
3165 return pid_to_ptid (thread_num
);
3167 return inferior_ptid
;
3170 /* Async version of remote_wait. */
3172 remote_async_wait (ptid_t ptid
, struct target_waitstatus
*status
)
3174 struct remote_state
*rs
= get_remote_state ();
3175 unsigned char *buf
= alloca (rs
->remote_packet_size
);
3176 ULONGEST thread_num
= -1;
3179 status
->kind
= TARGET_WAITKIND_EXITED
;
3180 status
->value
.integer
= 0;
3182 remote_stopped_by_watchpoint_p
= 0;
3188 if (!target_is_async_p ())
3189 ofunc
= signal (SIGINT
, remote_interrupt
);
3190 /* FIXME: cagney/1999-09-27: If we're in async mode we should
3191 _never_ wait for ever -> test on target_is_async_p().
3192 However, before we do that we need to ensure that the caller
3193 knows how to take the target into/out of async mode. */
3194 getpkt (buf
, (rs
->remote_packet_size
), wait_forever_enabled_p
);
3195 if (!target_is_async_p ())
3196 signal (SIGINT
, ofunc
);
3198 /* This is a hook for when we need to do something (perhaps the
3199 collection of trace data) every time the target stops. */
3200 if (target_wait_loop_hook
)
3201 (*target_wait_loop_hook
) ();
3205 case 'E': /* Error of some sort */
3206 warning ("Remote failure reply: %s", buf
);
3208 case 'F': /* File-I/O request */
3209 remote_fileio_request (buf
);
3211 case 'T': /* Status with PC, SP, FP, ... */
3214 char regs
[MAX_REGISTER_SIZE
];
3216 /* Expedited reply, containing Signal, {regno, reg} repeat */
3217 /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where
3219 n... = register number
3220 r... = register contents
3222 p
= &buf
[3]; /* after Txx */
3231 /* If the packet contains a register number, save it in pnum
3232 and set p1 to point to the character following it.
3233 Otherwise p1 points to p. */
3235 /* If this packet is an awatch packet, don't parse the 'a'
3236 as a register number. */
3238 if (!strncmp (p
, "awatch", strlen ("awatch")) != 0)
3240 /* Read the register number. */
3241 pnum
= strtol (p
, &p_temp
, 16);
3242 p1
= (unsigned char *) p_temp
;
3247 if (p1
== p
) /* No register number present here */
3249 p1
= (unsigned char *) strchr (p
, ':');
3251 warning ("Malformed packet(a) (missing colon): %s\n\
3254 if (strncmp (p
, "thread", p1
- p
) == 0)
3256 p_temp
= unpack_varlen_hex (++p1
, &thread_num
);
3257 record_currthread (thread_num
);
3258 p
= (unsigned char *) p_temp
;
3260 else if ((strncmp (p
, "watch", p1
- p
) == 0)
3261 || (strncmp (p
, "rwatch", p1
- p
) == 0)
3262 || (strncmp (p
, "awatch", p1
- p
) == 0))
3264 remote_stopped_by_watchpoint_p
= 1;
3265 p
= unpack_varlen_hex (++p1
, &addr
);
3266 remote_watch_data_address
= (CORE_ADDR
)addr
;
3270 /* Silently skip unknown optional info. */
3271 p_temp
= (unsigned char *) strchr (p1
+ 1, ';');
3279 struct packet_reg
*reg
= packet_reg_from_pnum (rs
, pnum
);
3282 warning ("Malformed packet(b) (missing colon): %s\n\
3287 warning ("Remote sent bad register number %ld: %s\n\
3291 fieldsize
= hex2bin (p
, regs
, REGISTER_RAW_SIZE (reg
->regnum
));
3293 if (fieldsize
< REGISTER_RAW_SIZE (reg
->regnum
))
3294 warning ("Remote reply is too short: %s", buf
);
3295 supply_register (reg
->regnum
, regs
);
3300 warning ("Remote register badly formatted: %s", buf
);
3301 warning (" here: %s", p
);
3306 case 'S': /* Old style status, just signal only */
3307 status
->kind
= TARGET_WAITKIND_STOPPED
;
3308 status
->value
.sig
= (enum target_signal
)
3309 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
3313 /* Export Cisco kernel mode as a convenience variable
3314 (so that it can be used in the GDB prompt if desired). */
3316 if (cisco_kernel_mode
== 1)
3317 set_internalvar (lookup_internalvar ("cisco_kernel_mode"),
3318 value_from_string ("PDEBUG-"));
3319 cisco_kernel_mode
= 0;
3320 thread_num
= strtol ((const char *) &buf
[4], NULL
, 16);
3321 record_currthread (thread_num
);
3323 else if (buf
[3] == 'k')
3325 /* Export Cisco kernel mode as a convenience variable
3326 (so that it can be used in the GDB prompt if desired). */
3328 if (cisco_kernel_mode
== 1)
3329 set_internalvar (lookup_internalvar ("cisco_kernel_mode"),
3330 value_from_string ("KDEBUG-"));
3331 cisco_kernel_mode
= 1;
3334 case 'N': /* Cisco special: status and offsets */
3336 bfd_vma text_addr
, data_addr
, bss_addr
;
3337 bfd_signed_vma text_off
, data_off
, bss_off
;
3340 status
->kind
= TARGET_WAITKIND_STOPPED
;
3341 status
->value
.sig
= (enum target_signal
)
3342 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
3344 if (symfile_objfile
== NULL
)
3346 warning ("Relocation packet recieved with no symbol file. \
3351 /* Relocate object file. Buffer format is NAATT;DD;BB
3352 * where AA is the signal number, TT is the new text
3353 * address, DD * is the new data address, and BB is the
3354 * new bss address. */
3357 text_addr
= strtoul (p
, (char **) &p1
, 16);
3358 if (p1
== p
|| *p1
!= ';')
3359 warning ("Malformed relocation packet: Packet '%s'", buf
);
3361 data_addr
= strtoul (p
, (char **) &p1
, 16);
3362 if (p1
== p
|| *p1
!= ';')
3363 warning ("Malformed relocation packet: Packet '%s'", buf
);
3365 bss_addr
= strtoul (p
, (char **) &p1
, 16);
3367 warning ("Malformed relocation packet: Packet '%s'", buf
);
3369 if (remote_cisco_section_offsets (text_addr
, data_addr
, bss_addr
,
3370 &text_off
, &data_off
, &bss_off
)
3372 if (text_off
!= 0 || data_off
!= 0 || bss_off
!= 0)
3373 remote_cisco_objfile_relocate (text_off
, data_off
, bss_off
);
3377 case 'W': /* Target exited */
3379 /* The remote process exited. */
3380 status
->kind
= TARGET_WAITKIND_EXITED
;
3381 status
->value
.integer
= (fromhex (buf
[1]) << 4) + fromhex (buf
[2]);
3385 status
->kind
= TARGET_WAITKIND_SIGNALLED
;
3386 status
->value
.sig
= (enum target_signal
)
3387 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
3391 case 'O': /* Console output */
3392 remote_console_output (buf
+ 1);
3393 /* Return immediately to the event loop. The event loop will
3394 still be waiting on the inferior afterwards. */
3395 status
->kind
= TARGET_WAITKIND_IGNORE
;
3398 if (last_sent_signal
!= TARGET_SIGNAL_0
)
3400 /* Zero length reply means that we tried 'S' or 'C' and
3401 the remote system doesn't support it. */
3402 target_terminal_ours_for_output ();
3404 ("Can't send signals to this remote system. %s not sent.\n",
3405 target_signal_to_name (last_sent_signal
));
3406 last_sent_signal
= TARGET_SIGNAL_0
;
3407 target_terminal_inferior ();
3409 strcpy ((char *) buf
, last_sent_step
? "s" : "c");
3410 putpkt ((char *) buf
);
3413 /* else fallthrough */
3415 warning ("Invalid remote reply: %s", buf
);
3420 if (thread_num
!= -1)
3422 return pid_to_ptid (thread_num
);
3424 return inferior_ptid
;
3427 /* Number of bytes of registers this stub implements. */
3429 static int register_bytes_found
;
3431 /* Read the remote registers into the block REGS. */
3432 /* Currently we just read all the registers, so we don't use regnum. */
3436 remote_fetch_registers (int regnum
)
3438 struct remote_state
*rs
= get_remote_state ();
3439 char *buf
= alloca (rs
->remote_packet_size
);
3442 char *regs
= alloca (rs
->sizeof_g_packet
);
3444 set_thread (PIDGET (inferior_ptid
), 1);
3448 struct packet_reg
*reg
= packet_reg_from_regnum (rs
, regnum
);
3449 gdb_assert (reg
!= NULL
);
3450 if (!reg
->in_g_packet
)
3451 internal_error (__FILE__
, __LINE__
,
3452 "Attempt to fetch a non G-packet register when this "
3453 "remote.c does not support the p-packet.");
3457 remote_send (buf
, (rs
->remote_packet_size
));
3459 /* Save the size of the packet sent to us by the target. Its used
3460 as a heuristic when determining the max size of packets that the
3461 target can safely receive. */
3462 if ((rs
->actual_register_packet_size
) == 0)
3463 (rs
->actual_register_packet_size
) = strlen (buf
);
3465 /* Unimplemented registers read as all bits zero. */
3466 memset (regs
, 0, rs
->sizeof_g_packet
);
3468 /* We can get out of synch in various cases. If the first character
3469 in the buffer is not a hex character, assume that has happened
3470 and try to fetch another packet to read. */
3471 while ((buf
[0] < '0' || buf
[0] > '9')
3472 && (buf
[0] < 'a' || buf
[0] > 'f')
3473 && buf
[0] != 'x') /* New: unavailable register value */
3476 fprintf_unfiltered (gdb_stdlog
,
3477 "Bad register packet; fetching a new packet\n");
3478 getpkt (buf
, (rs
->remote_packet_size
), 0);
3481 /* Reply describes registers byte by byte, each byte encoded as two
3482 hex characters. Suck them all up, then supply them to the
3483 register cacheing/storage mechanism. */
3486 for (i
= 0; i
< rs
->sizeof_g_packet
; i
++)
3492 warning ("Remote reply is of odd length: %s", buf
);
3493 /* Don't change register_bytes_found in this case, and don't
3494 print a second warning. */
3497 if (p
[0] == 'x' && p
[1] == 'x')
3498 regs
[i
] = 0; /* 'x' */
3500 regs
[i
] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
3504 if (i
!= register_bytes_found
)
3506 register_bytes_found
= i
;
3507 if (REGISTER_BYTES_OK_P ()
3508 && !REGISTER_BYTES_OK (i
))
3509 warning ("Remote reply is too short: %s", buf
);
3515 for (i
= 0; i
< NUM_REGS
+ NUM_PSEUDO_REGS
; i
++)
3517 struct packet_reg
*r
= &rs
->regs
[i
];
3520 supply_register (r
->regnum
, regs
+ r
->offset
);
3521 if (buf
[r
->offset
* 2] == 'x')
3522 set_register_cached (i
, -1);
3528 /* Prepare to store registers. Since we may send them all (using a
3529 'G' request), we have to read out the ones we don't want to change
3533 remote_prepare_to_store (void)
3535 struct remote_state
*rs
= get_remote_state ();
3537 char buf
[MAX_REGISTER_SIZE
];
3539 /* Make sure the entire registers array is valid. */
3540 switch (remote_protocol_P
.support
)
3542 case PACKET_DISABLE
:
3543 case PACKET_SUPPORT_UNKNOWN
:
3544 /* Make sure all the necessary registers are cached. */
3545 for (i
= 0; i
< NUM_REGS
; i
++)
3546 if (rs
->regs
[i
].in_g_packet
)
3547 regcache_raw_read (current_regcache
, rs
->regs
[i
].regnum
, buf
);
3554 /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF
3555 packet was not recognized. */
3558 store_register_using_P (int regnum
)
3560 struct remote_state
*rs
= get_remote_state ();
3561 struct packet_reg
*reg
= packet_reg_from_regnum (rs
, regnum
);
3562 /* Try storing a single register. */
3563 char *buf
= alloca (rs
->remote_packet_size
);
3564 char regp
[MAX_REGISTER_SIZE
];
3568 sprintf (buf
, "P%s=", phex_nz (reg
->pnum
, 0));
3569 p
= buf
+ strlen (buf
);
3570 regcache_collect (reg
->regnum
, regp
);
3571 bin2hex (regp
, p
, REGISTER_RAW_SIZE (reg
->regnum
));
3572 remote_send (buf
, rs
->remote_packet_size
);
3574 return buf
[0] != '\0';
3578 /* Store register REGNUM, or all registers if REGNUM == -1, from the contents
3579 of the register cache buffer. FIXME: ignores errors. */
3582 remote_store_registers (int regnum
)
3584 struct remote_state
*rs
= get_remote_state ();
3590 set_thread (PIDGET (inferior_ptid
), 1);
3594 switch (remote_protocol_P
.support
)
3596 case PACKET_DISABLE
:
3599 if (store_register_using_P (regnum
))
3602 error ("Protocol error: P packet not recognized by stub");
3603 case PACKET_SUPPORT_UNKNOWN
:
3604 if (store_register_using_P (regnum
))
3606 /* The stub recognized the 'P' packet. Remember this. */
3607 remote_protocol_P
.support
= PACKET_ENABLE
;
3612 /* The stub does not support the 'P' packet. Use 'G'
3613 instead, and don't try using 'P' in the future (it
3614 will just waste our time). */
3615 remote_protocol_P
.support
= PACKET_DISABLE
;
3621 /* Extract all the registers in the regcache copying them into a
3625 regs
= alloca (rs
->sizeof_g_packet
);
3626 memset (regs
, rs
->sizeof_g_packet
, 0);
3627 for (i
= 0; i
< NUM_REGS
+ NUM_PSEUDO_REGS
; i
++)
3629 struct packet_reg
*r
= &rs
->regs
[i
];
3631 regcache_collect (r
->regnum
, regs
+ r
->offset
);
3635 /* Command describes registers byte by byte,
3636 each byte encoded as two hex characters. */
3637 buf
= alloca (rs
->remote_packet_size
);
3640 /* remote_prepare_to_store insures that register_bytes_found gets set. */
3641 bin2hex (regs
, p
, register_bytes_found
);
3642 remote_send (buf
, (rs
->remote_packet_size
));
3646 /* Return the number of hex digits in num. */
3649 hexnumlen (ULONGEST num
)
3653 for (i
= 0; num
!= 0; i
++)
3659 /* Set BUF to the minimum number of hex digits representing NUM. */
3662 hexnumstr (char *buf
, ULONGEST num
)
3664 int len
= hexnumlen (num
);
3665 return hexnumnstr (buf
, num
, len
);
3669 /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */
3672 hexnumnstr (char *buf
, ULONGEST num
, int width
)
3678 for (i
= width
- 1; i
>= 0; i
--)
3680 buf
[i
] = "0123456789abcdef"[(num
& 0xf)];
3687 /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */
3690 remote_address_masked (CORE_ADDR addr
)
3692 if (remote_address_size
> 0
3693 && remote_address_size
< (sizeof (ULONGEST
) * 8))
3695 /* Only create a mask when that mask can safely be constructed
3696 in a ULONGEST variable. */
3698 mask
= (mask
<< remote_address_size
) - 1;
3704 /* Determine whether the remote target supports binary downloading.
3705 This is accomplished by sending a no-op memory write of zero length
3706 to the target at the specified address. It does not suffice to send
3707 the whole packet, since many stubs strip the eighth bit and subsequently
3708 compute a wrong checksum, which causes real havoc with remote_write_bytes.
3710 NOTE: This can still lose if the serial line is not eight-bit
3711 clean. In cases like this, the user should clear "remote
3715 check_binary_download (CORE_ADDR addr
)
3717 struct remote_state
*rs
= get_remote_state ();
3718 switch (remote_protocol_binary_download
.support
)
3720 case PACKET_DISABLE
:
3724 case PACKET_SUPPORT_UNKNOWN
:
3726 char *buf
= alloca (rs
->remote_packet_size
);
3731 p
+= hexnumstr (p
, (ULONGEST
) addr
);
3733 p
+= hexnumstr (p
, (ULONGEST
) 0);
3737 putpkt_binary (buf
, (int) (p
- buf
));
3738 getpkt (buf
, (rs
->remote_packet_size
), 0);
3743 fprintf_unfiltered (gdb_stdlog
,
3744 "binary downloading NOT suppported by target\n");
3745 remote_protocol_binary_download
.support
= PACKET_DISABLE
;
3750 fprintf_unfiltered (gdb_stdlog
,
3751 "binary downloading suppported by target\n");
3752 remote_protocol_binary_download
.support
= PACKET_ENABLE
;
3759 /* Write memory data directly to the remote machine.
3760 This does not inform the data cache; the data cache uses this.
3761 MEMADDR is the address in the remote memory space.
3762 MYADDR is the address of the buffer in our space.
3763 LEN is the number of bytes.
3765 Returns number of bytes transferred, or 0 (setting errno) for
3766 error. Only transfer a single packet. */
3769 remote_write_bytes (CORE_ADDR memaddr
, char *myaddr
, int len
)
3772 int max_buf_size
; /* Max size of packet output buffer */
3774 unsigned char *plen
;
3780 /* Verify that the target can support a binary download */
3781 check_binary_download (memaddr
);
3783 /* Determine the max packet size. */
3784 max_buf_size
= get_memory_write_packet_size ();
3785 sizeof_buf
= max_buf_size
+ 1; /* Space for trailing NUL */
3786 buf
= alloca (sizeof_buf
);
3788 /* Subtract header overhead from max payload size - $M<memaddr>,<len>:#nn */
3789 max_buf_size
-= 2 + hexnumlen (memaddr
+ len
- 1) + 1 + hexnumlen (len
) + 4;
3791 /* construct "M"<memaddr>","<len>":" */
3792 /* sprintf (buf, "M%lx,%x:", (unsigned long) memaddr, todo); */
3795 /* Append [XM]. Compute a best guess of the number of bytes
3796 actually transfered. */
3797 switch (remote_protocol_binary_download
.support
)
3801 /* Best guess at number of bytes that will fit. */
3802 todo
= min (len
, max_buf_size
);
3804 case PACKET_DISABLE
:
3806 /* num bytes that will fit */
3807 todo
= min (len
, max_buf_size
/ 2);
3809 case PACKET_SUPPORT_UNKNOWN
:
3810 internal_error (__FILE__
, __LINE__
,
3811 "remote_write_bytes: bad internal state");
3813 internal_error (__FILE__
, __LINE__
, "bad switch");
3816 /* Append <memaddr> */
3817 memaddr
= remote_address_masked (memaddr
);
3818 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
3821 /* Append <len>. Retain the location/size of <len>. It may
3822 need to be adjusted once the packet body has been created. */
3824 plenlen
= hexnumstr (p
, (ULONGEST
) todo
);
3829 /* Append the packet body. */
3830 switch (remote_protocol_binary_download
.support
)
3833 /* Binary mode. Send target system values byte by byte, in
3834 increasing byte addresses. Only escape certain critical
3837 (nr_bytes
< todo
) && (p
- buf
) < (max_buf_size
- 2);
3840 switch (myaddr
[nr_bytes
] & 0xff)
3845 /* These must be escaped */
3847 *p
++ = (myaddr
[nr_bytes
] & 0xff) ^ 0x20;
3850 *p
++ = myaddr
[nr_bytes
] & 0xff;
3854 if (nr_bytes
< todo
)
3856 /* Escape chars have filled up the buffer prematurely,
3857 and we have actually sent fewer bytes than planned.
3858 Fix-up the length field of the packet. Use the same
3859 number of characters as before. */
3861 plen
+= hexnumnstr (plen
, (ULONGEST
) nr_bytes
, plenlen
);
3862 *plen
= ':'; /* overwrite \0 from hexnumnstr() */
3865 case PACKET_DISABLE
:
3866 /* Normal mode: Send target system values byte by byte, in
3867 increasing byte addresses. Each byte is encoded as a two hex
3869 nr_bytes
= bin2hex (myaddr
, p
, todo
);
3872 case PACKET_SUPPORT_UNKNOWN
:
3873 internal_error (__FILE__
, __LINE__
,
3874 "remote_write_bytes: bad internal state");
3876 internal_error (__FILE__
, __LINE__
, "bad switch");
3879 putpkt_binary (buf
, (int) (p
- buf
));
3880 getpkt (buf
, sizeof_buf
, 0);
3884 /* There is no correspondance between what the remote protocol
3885 uses for errors and errno codes. We would like a cleaner way
3886 of representing errors (big enough to include errno codes,
3887 bfd_error codes, and others). But for now just return EIO. */
3892 /* Return NR_BYTES, not TODO, in case escape chars caused us to send fewer
3893 bytes than we'd planned. */
3897 /* Read memory data directly from the remote machine.
3898 This does not use the data cache; the data cache uses this.
3899 MEMADDR is the address in the remote memory space.
3900 MYADDR is the address of the buffer in our space.
3901 LEN is the number of bytes.
3903 Returns number of bytes transferred, or 0 for error. */
3905 /* NOTE: cagney/1999-10-18: This function (and its siblings in other
3906 remote targets) shouldn't attempt to read the entire buffer.
3907 Instead it should read a single packet worth of data and then
3908 return the byte size of that packet to the caller. The caller (its
3909 caller and its callers caller ;-) already contains code for
3910 handling partial reads. */
3913 remote_read_bytes (CORE_ADDR memaddr
, char *myaddr
, int len
)
3916 int max_buf_size
; /* Max size of packet output buffer */
3920 /* Create a buffer big enough for this packet. */
3921 max_buf_size
= get_memory_read_packet_size ();
3922 sizeof_buf
= max_buf_size
+ 1; /* Space for trailing NUL */
3923 buf
= alloca (sizeof_buf
);
3932 todo
= min (len
, max_buf_size
/ 2); /* num bytes that will fit */
3934 /* construct "m"<memaddr>","<len>" */
3935 /* sprintf (buf, "m%lx,%x", (unsigned long) memaddr, todo); */
3936 memaddr
= remote_address_masked (memaddr
);
3939 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
3941 p
+= hexnumstr (p
, (ULONGEST
) todo
);
3945 getpkt (buf
, sizeof_buf
, 0);
3948 && isxdigit (buf
[1]) && isxdigit (buf
[2])
3951 /* There is no correspondance between what the remote protocol uses
3952 for errors and errno codes. We would like a cleaner way of
3953 representing errors (big enough to include errno codes, bfd_error
3954 codes, and others). But for now just return EIO. */
3959 /* Reply describes memory byte by byte,
3960 each byte encoded as two hex characters. */
3963 if ((i
= hex2bin (p
, myaddr
, todo
)) < todo
)
3965 /* Reply is short. This means that we were able to read
3966 only part of what we wanted to. */
3967 return i
+ (origlen
- len
);
3976 /* Read or write LEN bytes from inferior memory at MEMADDR,
3977 transferring to or from debugger address BUFFER. Write to inferior if
3978 SHOULD_WRITE is nonzero. Returns length of data written or read; 0
3979 for error. TARGET is unused. */
3983 remote_xfer_memory (CORE_ADDR mem_addr
, char *buffer
, int mem_len
,
3984 int should_write
, struct mem_attrib
*attrib
,
3985 struct target_ops
*target
)
3987 CORE_ADDR targ_addr
;
3991 /* Should this be the selected frame? */
3992 gdbarch_remote_translate_xfer_address (current_gdbarch
, current_regcache
,
3994 &targ_addr
, &targ_len
);
3999 res
= remote_write_bytes (targ_addr
, buffer
, targ_len
);
4001 res
= remote_read_bytes (targ_addr
, buffer
, targ_len
);
4008 /* Enable after 4.12. */
4011 remote_search (int len
, char *data
, char *mask
, CORE_ADDR startaddr
,
4012 int increment
, CORE_ADDR lorange
, CORE_ADDR hirange
,
4013 CORE_ADDR
*addr_found
, char *data_found
)
4015 if (increment
== -4 && len
== 4)
4017 long mask_long
, data_long
;
4018 long data_found_long
;
4019 CORE_ADDR addr_we_found
;
4020 char *buf
= alloca (rs
->remote_packet_size
);
4021 long returned_long
[2];
4024 mask_long
= extract_unsigned_integer (mask
, len
);
4025 data_long
= extract_unsigned_integer (data
, len
);
4026 sprintf (buf
, "t%x:%x,%x", startaddr
, data_long
, mask_long
);
4028 getpkt (buf
, (rs
->remote_packet_size
), 0);
4031 /* The stub doesn't support the 't' request. We might want to
4032 remember this fact, but on the other hand the stub could be
4033 switched on us. Maybe we should remember it only until
4034 the next "target remote". */
4035 generic_search (len
, data
, mask
, startaddr
, increment
, lorange
,
4036 hirange
, addr_found
, data_found
);
4041 /* There is no correspondance between what the remote protocol uses
4042 for errors and errno codes. We would like a cleaner way of
4043 representing errors (big enough to include errno codes, bfd_error
4044 codes, and others). But for now just use EIO. */
4045 memory_error (EIO
, startaddr
);
4048 while (*p
!= '\0' && *p
!= ',')
4049 addr_we_found
= (addr_we_found
<< 4) + fromhex (*p
++);
4051 error ("Protocol error: short return for search");
4053 data_found_long
= 0;
4054 while (*p
!= '\0' && *p
!= ',')
4055 data_found_long
= (data_found_long
<< 4) + fromhex (*p
++);
4056 /* Ignore anything after this comma, for future extensions. */
4058 if (addr_we_found
< lorange
|| addr_we_found
>= hirange
)
4064 *addr_found
= addr_we_found
;
4065 *data_found
= store_unsigned_integer (data_we_found
, len
);
4068 generic_search (len
, data
, mask
, startaddr
, increment
, lorange
,
4069 hirange
, addr_found
, data_found
);
4074 remote_files_info (struct target_ops
*ignore
)
4076 puts_filtered ("Debugging a target over a serial line.\n");
4079 /* Stuff for dealing with the packets which are part of this protocol.
4080 See comment at top of file for details. */
4082 /* Read a single character from the remote end, masking it down to 7 bits. */
4085 readchar (int timeout
)
4089 ch
= serial_readchar (remote_desc
, timeout
);
4094 switch ((enum serial_rc
) ch
)
4097 target_mourn_inferior ();
4098 error ("Remote connection closed");
4101 perror_with_name ("Remote communication error");
4103 case SERIAL_TIMEOUT
:
4109 /* Send the command in BUF to the remote machine, and read the reply
4110 into BUF. Report an error if we get an error reply. */
4113 remote_send (char *buf
,
4117 getpkt (buf
, sizeof_buf
, 0);
4120 error ("Remote failure reply: %s", buf
);
4123 /* Display a null-terminated packet on stdout, for debugging, using C
4127 print_packet (char *buf
)
4129 puts_filtered ("\"");
4130 fputstr_filtered (buf
, '"', gdb_stdout
);
4131 puts_filtered ("\"");
4137 return putpkt_binary (buf
, strlen (buf
));
4140 /* Send a packet to the remote machine, with error checking. The data
4141 of the packet is in BUF. The string in BUF can be at most (rs->remote_packet_size) - 5
4142 to account for the $, # and checksum, and for a possible /0 if we are
4143 debugging (remote_debug) and want to print the sent packet as a string */
4146 putpkt_binary (char *buf
, int cnt
)
4148 struct remote_state
*rs
= get_remote_state ();
4150 unsigned char csum
= 0;
4151 char *buf2
= alloca (cnt
+ 6);
4152 long sizeof_junkbuf
= (rs
->remote_packet_size
);
4153 char *junkbuf
= alloca (sizeof_junkbuf
);
4159 /* Copy the packet into buffer BUF2, encapsulating it
4160 and giving it a checksum. */
4165 for (i
= 0; i
< cnt
; i
++)
4171 *p
++ = tohex ((csum
>> 4) & 0xf);
4172 *p
++ = tohex (csum
& 0xf);
4174 /* Send it over and over until we get a positive ack. */
4178 int started_error_output
= 0;
4183 fprintf_unfiltered (gdb_stdlog
, "Sending packet: ");
4184 fputstrn_unfiltered (buf2
, p
- buf2
, 0, gdb_stdlog
);
4185 fprintf_unfiltered (gdb_stdlog
, "...");
4186 gdb_flush (gdb_stdlog
);
4188 if (serial_write (remote_desc
, buf2
, p
- buf2
))
4189 perror_with_name ("putpkt: write failed");
4191 /* read until either a timeout occurs (-2) or '+' is read */
4194 ch
= readchar (remote_timeout
);
4202 case SERIAL_TIMEOUT
:
4204 if (started_error_output
)
4206 putchar_unfiltered ('\n');
4207 started_error_output
= 0;
4216 fprintf_unfiltered (gdb_stdlog
, "Ack\n");
4220 fprintf_unfiltered (gdb_stdlog
, "Nak\n");
4221 case SERIAL_TIMEOUT
:
4225 break; /* Retransmit buffer */
4229 fprintf_unfiltered (gdb_stdlog
, "Packet instead of Ack, ignoring it\n");
4230 /* It's probably an old response, and we're out of sync.
4231 Just gobble up the packet and ignore it. */
4232 read_frame (junkbuf
, sizeof_junkbuf
);
4233 continue; /* Now, go look for + */
4238 if (!started_error_output
)
4240 started_error_output
= 1;
4241 fprintf_unfiltered (gdb_stdlog
, "putpkt: Junk: ");
4243 fputc_unfiltered (ch
& 0177, gdb_stdlog
);
4247 break; /* Here to retransmit */
4251 /* This is wrong. If doing a long backtrace, the user should be
4252 able to get out next time we call QUIT, without anything as
4253 violent as interrupt_query. If we want to provide a way out of
4254 here without getting to the next QUIT, it should be based on
4255 hitting ^C twice as in remote_wait. */
4265 static int remote_cisco_mode
;
4267 /* Come here after finding the start of the frame. Collect the rest
4268 into BUF, verifying the checksum, length, and handling run-length
4269 compression. No more than sizeof_buf-1 characters are read so that
4270 the buffer can be NUL terminated.
4272 Returns -1 on error, number of characters in buffer (ignoring the
4273 trailing NULL) on success. (could be extended to return one of the
4274 SERIAL status indications). */
4277 read_frame (char *buf
,
4289 /* ASSERT (bc < sizeof_buf - 1) - space for trailing NUL */
4290 c
= readchar (remote_timeout
);
4293 case SERIAL_TIMEOUT
:
4295 fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog
);
4299 fputs_filtered ("Saw new packet start in middle of old one\n",
4301 return -1; /* Start a new packet, count retries */
4304 unsigned char pktcsum
;
4310 check_0
= readchar (remote_timeout
);
4312 check_1
= readchar (remote_timeout
);
4314 if (check_0
== SERIAL_TIMEOUT
|| check_1
== SERIAL_TIMEOUT
)
4317 fputs_filtered ("Timeout in checksum, retrying\n", gdb_stdlog
);
4320 else if (check_0
< 0 || check_1
< 0)
4323 fputs_filtered ("Communication error in checksum\n", gdb_stdlog
);
4327 pktcsum
= (fromhex (check_0
) << 4) | fromhex (check_1
);
4328 if (csum
== pktcsum
)
4333 fprintf_filtered (gdb_stdlog
,
4334 "Bad checksum, sentsum=0x%x, csum=0x%x, buf=",
4336 fputs_filtered (buf
, gdb_stdlog
);
4337 fputs_filtered ("\n", gdb_stdlog
);
4339 /* Number of characters in buffer ignoring trailing
4343 case '*': /* Run length encoding */
4348 if (remote_cisco_mode
== 0)
4350 c
= readchar (remote_timeout
);
4352 repeat
= c
- ' ' + 3; /* Compute repeat count */
4356 /* Cisco's run-length encoding variant uses two
4357 hex chars to represent the repeat count. */
4359 c
= readchar (remote_timeout
);
4361 repeat
= fromhex (c
) << 4;
4362 c
= readchar (remote_timeout
);
4364 repeat
+= fromhex (c
);
4367 /* The character before ``*'' is repeated. */
4369 if (repeat
> 0 && repeat
<= 255
4371 && bc
+ repeat
- 1 < sizeof_buf
- 1)
4373 memset (&buf
[bc
], buf
[bc
- 1], repeat
);
4379 printf_filtered ("Repeat count %d too large for buffer: ", repeat
);
4380 puts_filtered (buf
);
4381 puts_filtered ("\n");
4385 if (bc
< sizeof_buf
- 1)
4393 puts_filtered ("Remote packet too long: ");
4394 puts_filtered (buf
);
4395 puts_filtered ("\n");
4402 /* Read a packet from the remote machine, with error checking, and
4403 store it in BUF. If FOREVER, wait forever rather than timing out;
4404 this is used (in synchronous mode) to wait for a target that is is
4405 executing user code to stop. */
4406 /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we
4407 don't have to change all the calls to getpkt to deal with the
4408 return value, because at the moment I don't know what the right
4409 thing to do it for those. */
4417 timed_out
= getpkt_sane (buf
, sizeof_buf
, forever
);
4421 /* Read a packet from the remote machine, with error checking, and
4422 store it in BUF. If FOREVER, wait forever rather than timing out;
4423 this is used (in synchronous mode) to wait for a target that is is
4424 executing user code to stop. If FOREVER == 0, this function is
4425 allowed to time out gracefully and return an indication of this to
4428 getpkt_sane (char *buf
,
4437 strcpy (buf
, "timeout");
4441 timeout
= watchdog
> 0 ? watchdog
: -1;
4445 timeout
= remote_timeout
;
4449 for (tries
= 1; tries
<= MAX_TRIES
; tries
++)
4451 /* This can loop forever if the remote side sends us characters
4452 continuously, but if it pauses, we'll get a zero from readchar
4453 because of timeout. Then we'll count that as a retry. */
4455 /* Note that we will only wait forever prior to the start of a packet.
4456 After that, we expect characters to arrive at a brisk pace. They
4457 should show up within remote_timeout intervals. */
4461 c
= readchar (timeout
);
4463 if (c
== SERIAL_TIMEOUT
)
4465 if (forever
) /* Watchdog went off? Kill the target. */
4468 target_mourn_inferior ();
4469 error ("Watchdog has expired. Target detached.\n");
4472 fputs_filtered ("Timed out.\n", gdb_stdlog
);
4478 /* We've found the start of a packet, now collect the data. */
4480 val
= read_frame (buf
, sizeof_buf
);
4486 fprintf_unfiltered (gdb_stdlog
, "Packet received: ");
4487 fputstr_unfiltered (buf
, 0, gdb_stdlog
);
4488 fprintf_unfiltered (gdb_stdlog
, "\n");
4490 serial_write (remote_desc
, "+", 1);
4494 /* Try the whole thing again. */
4496 serial_write (remote_desc
, "-", 1);
4499 /* We have tried hard enough, and just can't receive the packet. Give up. */
4501 printf_unfiltered ("Ignoring packet error, continuing...\n");
4502 serial_write (remote_desc
, "+", 1);
4509 /* For some mysterious reason, wait_for_inferior calls kill instead of
4510 mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */
4514 target_mourn_inferior ();
4518 /* Use catch_errors so the user can quit from gdb even when we aren't on
4519 speaking terms with the remote system. */
4520 catch_errors ((catch_errors_ftype
*) putpkt
, "k", "", RETURN_MASK_ERROR
);
4522 /* Don't wait for it to die. I'm not really sure it matters whether
4523 we do or not. For the existing stubs, kill is a noop. */
4524 target_mourn_inferior ();
4527 /* Async version of remote_kill. */
4529 remote_async_kill (void)
4531 /* Unregister the file descriptor from the event loop. */
4532 if (target_is_async_p ())
4533 serial_async (remote_desc
, NULL
, 0);
4535 /* For some mysterious reason, wait_for_inferior calls kill instead of
4536 mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */
4540 target_mourn_inferior ();
4544 /* Use catch_errors so the user can quit from gdb even when we aren't on
4545 speaking terms with the remote system. */
4546 catch_errors ((catch_errors_ftype
*) putpkt
, "k", "", RETURN_MASK_ERROR
);
4548 /* Don't wait for it to die. I'm not really sure it matters whether
4549 we do or not. For the existing stubs, kill is a noop. */
4550 target_mourn_inferior ();
4556 remote_mourn_1 (&remote_ops
);
4560 remote_async_mourn (void)
4562 remote_mourn_1 (&remote_async_ops
);
4566 extended_remote_mourn (void)
4568 /* We do _not_ want to mourn the target like this; this will
4569 remove the extended remote target from the target stack,
4570 and the next time the user says "run" it'll fail.
4572 FIXME: What is the right thing to do here? */
4574 remote_mourn_1 (&extended_remote_ops
);
4578 /* Worker function for remote_mourn. */
4580 remote_mourn_1 (struct target_ops
*target
)
4582 unpush_target (target
);
4583 generic_mourn_inferior ();
4586 /* In the extended protocol we want to be able to do things like
4587 "run" and have them basically work as expected. So we need
4588 a special create_inferior function.
4590 FIXME: One day add support for changing the exec file
4591 we're debugging, arguments and an environment. */
4594 extended_remote_create_inferior (char *exec_file
, char *args
, char **env
)
4596 /* Rip out the breakpoints; we'll reinsert them after restarting
4597 the remote server. */
4598 remove_breakpoints ();
4600 /* Now restart the remote server. */
4601 extended_remote_restart ();
4603 /* Now put the breakpoints back in. This way we're safe if the
4604 restart function works via a unix fork on the remote side. */
4605 insert_breakpoints ();
4607 /* Clean up from the last time we were running. */
4608 clear_proceed_status ();
4610 /* Let the remote process run. */
4611 proceed (-1, TARGET_SIGNAL_0
, 0);
4614 /* Async version of extended_remote_create_inferior. */
4616 extended_remote_async_create_inferior (char *exec_file
, char *args
, char **env
)
4618 /* Rip out the breakpoints; we'll reinsert them after restarting
4619 the remote server. */
4620 remove_breakpoints ();
4622 /* If running asynchronously, register the target file descriptor
4623 with the event loop. */
4624 if (event_loop_p
&& target_can_async_p ())
4625 target_async (inferior_event_handler
, 0);
4627 /* Now restart the remote server. */
4628 extended_remote_restart ();
4630 /* Now put the breakpoints back in. This way we're safe if the
4631 restart function works via a unix fork on the remote side. */
4632 insert_breakpoints ();
4634 /* Clean up from the last time we were running. */
4635 clear_proceed_status ();
4637 /* Let the remote process run. */
4638 proceed (-1, TARGET_SIGNAL_0
, 0);
4642 /* On some machines, e.g. 68k, we may use a different breakpoint
4643 instruction than other targets; in those use
4644 DEPRECATED_REMOTE_BREAKPOINT instead of just BREAKPOINT_FROM_PC.
4645 Also, bi-endian targets may define
4646 DEPRECATED_LITTLE_REMOTE_BREAKPOINT and
4647 DEPRECATED_BIG_REMOTE_BREAKPOINT. If none of these are defined, we
4648 just call the standard routines that are in mem-break.c. */
4650 /* NOTE: cagney/2003-06-08: This is silly. A remote and simulator
4651 target should use an identical BREAKPOINT_FROM_PC. As for native,
4652 the ARCH-OS-tdep.c code can override the default. */
4654 #if defined (DEPRECATED_LITTLE_REMOTE_BREAKPOINT) && defined (DEPRECATED_BIG_REMOTE_BREAKPOINT) && !defined(DEPRECATED_REMOTE_BREAKPOINT)
4655 #define DEPRECATED_REMOTE_BREAKPOINT
4658 #ifdef DEPRECATED_REMOTE_BREAKPOINT
4660 /* If the target isn't bi-endian, just pretend it is. */
4661 #if !defined (DEPRECATED_LITTLE_REMOTE_BREAKPOINT) && !defined (DEPRECATED_BIG_REMOTE_BREAKPOINT)
4662 #define DEPRECATED_LITTLE_REMOTE_BREAKPOINT DEPRECATED_REMOTE_BREAKPOINT
4663 #define DEPRECATED_BIG_REMOTE_BREAKPOINT DEPRECATED_REMOTE_BREAKPOINT
4666 static unsigned char big_break_insn
[] = DEPRECATED_BIG_REMOTE_BREAKPOINT
;
4667 static unsigned char little_break_insn
[] = DEPRECATED_LITTLE_REMOTE_BREAKPOINT
;
4669 #endif /* DEPRECATED_REMOTE_BREAKPOINT */
4671 /* Insert a breakpoint on targets that don't have any better
4672 breakpoint support. We read the contents of the target location
4673 and stash it, then overwrite it with a breakpoint instruction.
4674 ADDR is the target location in the target machine. CONTENTS_CACHE
4675 is a pointer to memory allocated for saving the target contents.
4676 It is guaranteed by the caller to be long enough to save the number
4677 of bytes returned by BREAKPOINT_FROM_PC. */
4680 remote_insert_breakpoint (CORE_ADDR addr
, char *contents_cache
)
4682 struct remote_state
*rs
= get_remote_state ();
4683 #ifdef DEPRECATED_REMOTE_BREAKPOINT
4688 /* Try the "Z" s/w breakpoint packet if it is not already disabled.
4689 If it succeeds, then set the support to PACKET_ENABLE. If it
4690 fails, and the user has explicitly requested the Z support then
4691 report an error, otherwise, mark it disabled and go on. */
4693 if (remote_protocol_Z
[Z_PACKET_SOFTWARE_BP
].support
!= PACKET_DISABLE
)
4695 char *buf
= alloca (rs
->remote_packet_size
);
4698 addr
= remote_address_masked (addr
);
4702 p
+= hexnumstr (p
, (ULONGEST
) addr
);
4703 BREAKPOINT_FROM_PC (&addr
, &bp_size
);
4704 sprintf (p
, ",%d", bp_size
);
4707 getpkt (buf
, (rs
->remote_packet_size
), 0);
4709 switch (packet_ok (buf
, &remote_protocol_Z
[Z_PACKET_SOFTWARE_BP
]))
4715 case PACKET_UNKNOWN
:
4720 #ifdef DEPRECATED_REMOTE_BREAKPOINT
4721 val
= target_read_memory (addr
, contents_cache
, sizeof big_break_insn
);
4725 if (TARGET_BYTE_ORDER
== BFD_ENDIAN_BIG
)
4726 val
= target_write_memory (addr
, (char *) big_break_insn
,
4727 sizeof big_break_insn
);
4729 val
= target_write_memory (addr
, (char *) little_break_insn
,
4730 sizeof little_break_insn
);
4735 return memory_insert_breakpoint (addr
, contents_cache
);
4736 #endif /* DEPRECATED_REMOTE_BREAKPOINT */
4740 remote_remove_breakpoint (CORE_ADDR addr
, char *contents_cache
)
4742 struct remote_state
*rs
= get_remote_state ();
4745 if (remote_protocol_Z
[Z_PACKET_SOFTWARE_BP
].support
!= PACKET_DISABLE
)
4747 char *buf
= alloca (rs
->remote_packet_size
);
4754 addr
= remote_address_masked (addr
);
4755 p
+= hexnumstr (p
, (ULONGEST
) addr
);
4756 BREAKPOINT_FROM_PC (&addr
, &bp_size
);
4757 sprintf (p
, ",%d", bp_size
);
4760 getpkt (buf
, (rs
->remote_packet_size
), 0);
4762 return (buf
[0] == 'E');
4765 #ifdef DEPRECATED_REMOTE_BREAKPOINT
4766 return target_write_memory (addr
, contents_cache
, sizeof big_break_insn
);
4768 return memory_remove_breakpoint (addr
, contents_cache
);
4769 #endif /* DEPRECATED_REMOTE_BREAKPOINT */
4773 watchpoint_to_Z_packet (int type
)
4787 internal_error (__FILE__
, __LINE__
,
4788 "hw_bp_to_z: bad watchpoint type %d", type
);
4793 remote_insert_watchpoint (CORE_ADDR addr
, int len
, int type
)
4795 struct remote_state
*rs
= get_remote_state ();
4796 char *buf
= alloca (rs
->remote_packet_size
);
4798 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
4800 if (remote_protocol_Z
[packet
].support
== PACKET_DISABLE
)
4801 error ("Can't set hardware watchpoints without the '%s' (%s) packet\n",
4802 remote_protocol_Z
[packet
].name
,
4803 remote_protocol_Z
[packet
].title
);
4805 sprintf (buf
, "Z%x,", packet
);
4806 p
= strchr (buf
, '\0');
4807 addr
= remote_address_masked (addr
);
4808 p
+= hexnumstr (p
, (ULONGEST
) addr
);
4809 sprintf (p
, ",%x", len
);
4812 getpkt (buf
, (rs
->remote_packet_size
), 0);
4814 switch (packet_ok (buf
, &remote_protocol_Z
[packet
]))
4817 case PACKET_UNKNOWN
:
4822 internal_error (__FILE__
, __LINE__
,
4823 "remote_insert_watchpoint: reached end of function");
4828 remote_remove_watchpoint (CORE_ADDR addr
, int len
, int type
)
4830 struct remote_state
*rs
= get_remote_state ();
4831 char *buf
= alloca (rs
->remote_packet_size
);
4833 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
4835 if (remote_protocol_Z
[packet
].support
== PACKET_DISABLE
)
4836 error ("Can't clear hardware watchpoints without the '%s' (%s) packet\n",
4837 remote_protocol_Z
[packet
].name
,
4838 remote_protocol_Z
[packet
].title
);
4840 sprintf (buf
, "z%x,", packet
);
4841 p
= strchr (buf
, '\0');
4842 addr
= remote_address_masked (addr
);
4843 p
+= hexnumstr (p
, (ULONGEST
) addr
);
4844 sprintf (p
, ",%x", len
);
4846 getpkt (buf
, (rs
->remote_packet_size
), 0);
4848 switch (packet_ok (buf
, &remote_protocol_Z
[packet
]))
4851 case PACKET_UNKNOWN
:
4856 internal_error (__FILE__
, __LINE__
,
4857 "remote_remove_watchpoint: reached end of function");
4861 int remote_hw_watchpoint_limit
= -1;
4862 int remote_hw_breakpoint_limit
= -1;
4865 remote_check_watch_resources (int type
, int cnt
, int ot
)
4867 if (type
== bp_hardware_breakpoint
)
4869 if (remote_hw_breakpoint_limit
== 0)
4871 else if (remote_hw_breakpoint_limit
< 0)
4873 else if (cnt
<= remote_hw_breakpoint_limit
)
4878 if (remote_hw_watchpoint_limit
== 0)
4880 else if (remote_hw_watchpoint_limit
< 0)
4884 else if (cnt
<= remote_hw_watchpoint_limit
)
4891 remote_stopped_by_watchpoint (void)
4893 return remote_stopped_by_watchpoint_p
;
4897 remote_stopped_data_address (void)
4899 if (remote_stopped_by_watchpoint ())
4900 return remote_watch_data_address
;
4901 return (CORE_ADDR
)0;
4906 remote_insert_hw_breakpoint (CORE_ADDR addr
, char *shadow
)
4909 struct remote_state
*rs
= get_remote_state ();
4910 char *buf
= alloca (rs
->remote_packet_size
);
4913 /* The length field should be set to the size of a breakpoint
4916 BREAKPOINT_FROM_PC (&addr
, &len
);
4918 if (remote_protocol_Z
[Z_PACKET_HARDWARE_BP
].support
== PACKET_DISABLE
)
4919 error ("Can't set hardware breakpoint without the '%s' (%s) packet\n",
4920 remote_protocol_Z
[Z_PACKET_HARDWARE_BP
].name
,
4921 remote_protocol_Z
[Z_PACKET_HARDWARE_BP
].title
);
4927 addr
= remote_address_masked (addr
);
4928 p
+= hexnumstr (p
, (ULONGEST
) addr
);
4929 sprintf (p
, ",%x", len
);
4932 getpkt (buf
, (rs
->remote_packet_size
), 0);
4934 switch (packet_ok (buf
, &remote_protocol_Z
[Z_PACKET_HARDWARE_BP
]))
4937 case PACKET_UNKNOWN
:
4942 internal_error (__FILE__
, __LINE__
,
4943 "remote_insert_hw_breakpoint: reached end of function");
4948 remote_remove_hw_breakpoint (CORE_ADDR addr
, char *shadow
)
4951 struct remote_state
*rs
= get_remote_state ();
4952 char *buf
= alloca (rs
->remote_packet_size
);
4955 /* The length field should be set to the size of a breakpoint
4958 BREAKPOINT_FROM_PC (&addr
, &len
);
4960 if (remote_protocol_Z
[Z_PACKET_HARDWARE_BP
].support
== PACKET_DISABLE
)
4961 error ("Can't clear hardware breakpoint without the '%s' (%s) packet\n",
4962 remote_protocol_Z
[Z_PACKET_HARDWARE_BP
].name
,
4963 remote_protocol_Z
[Z_PACKET_HARDWARE_BP
].title
);
4969 addr
= remote_address_masked (addr
);
4970 p
+= hexnumstr (p
, (ULONGEST
) addr
);
4971 sprintf (p
, ",%x", len
);
4974 getpkt (buf
, (rs
->remote_packet_size
), 0);
4976 switch (packet_ok (buf
, &remote_protocol_Z
[Z_PACKET_HARDWARE_BP
]))
4979 case PACKET_UNKNOWN
:
4984 internal_error (__FILE__
, __LINE__
,
4985 "remote_remove_hw_breakpoint: reached end of function");
4988 /* Some targets are only capable of doing downloads, and afterwards
4989 they switch to the remote serial protocol. This function provides
4990 a clean way to get from the download target to the remote target.
4991 It's basically just a wrapper so that we don't have to expose any
4992 of the internal workings of remote.c.
4994 Prior to calling this routine, you should shutdown the current
4995 target code, else you will get the "A program is being debugged
4996 already..." message. Usually a call to pop_target() suffices. */
4999 push_remote_target (char *name
, int from_tty
)
5001 printf_filtered ("Switching to remote protocol\n");
5002 remote_open (name
, from_tty
);
5005 /* Table used by the crc32 function to calcuate the checksum. */
5007 static unsigned long crc32_table
[256] =
5010 static unsigned long
5011 crc32 (unsigned char *buf
, int len
, unsigned int crc
)
5013 if (!crc32_table
[1])
5015 /* Initialize the CRC table and the decoding table. */
5019 for (i
= 0; i
< 256; i
++)
5021 for (c
= i
<< 24, j
= 8; j
> 0; --j
)
5022 c
= c
& 0x80000000 ? (c
<< 1) ^ 0x04c11db7 : (c
<< 1);
5029 crc
= (crc
<< 8) ^ crc32_table
[((crc
>> 24) ^ *buf
) & 255];
5035 /* compare-sections command
5037 With no arguments, compares each loadable section in the exec bfd
5038 with the same memory range on the target, and reports mismatches.
5039 Useful for verifying the image on the target against the exec file.
5040 Depends on the target understanding the new "qCRC:" request. */
5042 /* FIXME: cagney/1999-10-26: This command should be broken down into a
5043 target method (target verify memory) and generic version of the
5044 actual command. This will allow other high-level code (especially
5045 generic_load()) to make use of this target functionality. */
5048 compare_sections_command (char *args
, int from_tty
)
5050 struct remote_state
*rs
= get_remote_state ();
5052 unsigned long host_crc
, target_crc
;
5053 extern bfd
*exec_bfd
;
5054 struct cleanup
*old_chain
;
5057 const char *sectname
;
5058 char *buf
= alloca (rs
->remote_packet_size
);
5065 error ("command cannot be used without an exec file");
5066 if (!current_target
.to_shortname
||
5067 strcmp (current_target
.to_shortname
, "remote") != 0)
5068 error ("command can only be used with remote target");
5070 for (s
= exec_bfd
->sections
; s
; s
= s
->next
)
5072 if (!(s
->flags
& SEC_LOAD
))
5073 continue; /* skip non-loadable section */
5075 size
= bfd_get_section_size_before_reloc (s
);
5077 continue; /* skip zero-length section */
5079 sectname
= bfd_get_section_name (exec_bfd
, s
);
5080 if (args
&& strcmp (args
, sectname
) != 0)
5081 continue; /* not the section selected by user */
5083 matched
= 1; /* do this section */
5085 /* FIXME: assumes lma can fit into long */
5086 sprintf (buf
, "qCRC:%lx,%lx", (long) lma
, (long) size
);
5089 /* be clever; compute the host_crc before waiting for target reply */
5090 sectdata
= xmalloc (size
);
5091 old_chain
= make_cleanup (xfree
, sectdata
);
5092 bfd_get_section_contents (exec_bfd
, s
, sectdata
, 0, size
);
5093 host_crc
= crc32 ((unsigned char *) sectdata
, size
, 0xffffffff);
5095 getpkt (buf
, (rs
->remote_packet_size
), 0);
5097 error ("target memory fault, section %s, range 0x%s -- 0x%s",
5098 sectname
, paddr (lma
), paddr (lma
+ size
));
5100 error ("remote target does not support this operation");
5102 for (target_crc
= 0, tmp
= &buf
[1]; *tmp
; tmp
++)
5103 target_crc
= target_crc
* 16 + fromhex (*tmp
);
5105 printf_filtered ("Section %s, range 0x%s -- 0x%s: ",
5106 sectname
, paddr (lma
), paddr (lma
+ size
));
5107 if (host_crc
== target_crc
)
5108 printf_filtered ("matched.\n");
5111 printf_filtered ("MIS-MATCHED!\n");
5115 do_cleanups (old_chain
);
5118 warning ("One or more sections of the remote executable does not match\n\
5119 the loaded file\n");
5120 if (args
&& !matched
)
5121 printf_filtered ("No loaded section named '%s'.\n", args
);
5125 remote_query (int query_type
, char *buf
, char *outbuf
, int *bufsiz
)
5127 struct remote_state
*rs
= get_remote_state ();
5129 char *buf2
= alloca (rs
->remote_packet_size
);
5130 char *p2
= &buf2
[0];
5133 error ("null pointer to remote bufer size specified");
5135 /* minimum outbuf size is (rs->remote_packet_size) - if bufsiz is not large enough let
5136 the caller know and return what the minimum size is */
5137 /* Note: a zero bufsiz can be used to query the minimum buffer size */
5138 if (*bufsiz
< (rs
->remote_packet_size
))
5140 *bufsiz
= (rs
->remote_packet_size
);
5144 /* except for querying the minimum buffer size, target must be open */
5146 error ("remote query is only available after target open");
5148 /* we only take uppercase letters as query types, at least for now */
5149 if ((query_type
< 'A') || (query_type
> 'Z'))
5150 error ("invalid remote query type");
5153 error ("null remote query specified");
5156 error ("remote query requires a buffer to receive data");
5163 /* we used one buffer char for the remote protocol q command and another
5164 for the query type. As the remote protocol encapsulation uses 4 chars
5165 plus one extra in case we are debugging (remote_debug),
5166 we have PBUFZIZ - 7 left to pack the query string */
5168 while (buf
[i
] && (i
< ((rs
->remote_packet_size
) - 8)))
5170 /* bad caller may have sent forbidden characters */
5171 if ((!isprint (buf
[i
])) || (buf
[i
] == '$') || (buf
[i
] == '#'))
5172 error ("illegal characters in query string");
5180 error ("query larger than available buffer");
5186 getpkt (outbuf
, *bufsiz
, 0);
5192 remote_rcmd (char *command
,
5193 struct ui_file
*outbuf
)
5195 struct remote_state
*rs
= get_remote_state ();
5197 char *buf
= alloca (rs
->remote_packet_size
);
5201 error ("remote rcmd is only available after target open");
5203 /* Send a NULL command across as an empty command */
5204 if (command
== NULL
)
5207 /* The query prefix */
5208 strcpy (buf
, "qRcmd,");
5209 p
= strchr (buf
, '\0');
5211 if ((strlen (buf
) + strlen (command
) * 2 + 8/*misc*/) > (rs
->remote_packet_size
))
5212 error ("\"monitor\" command ``%s'' is too long\n", command
);
5214 /* Encode the actual command */
5215 bin2hex (command
, p
, 0);
5217 if (putpkt (buf
) < 0)
5218 error ("Communication problem with target\n");
5220 /* get/display the response */
5223 /* XXX - see also tracepoint.c:remote_get_noisy_reply() */
5225 getpkt (buf
, (rs
->remote_packet_size
), 0);
5227 error ("Target does not support this command\n");
5228 if (buf
[0] == 'O' && buf
[1] != 'K')
5230 remote_console_output (buf
+ 1); /* 'O' message from stub */
5233 if (strcmp (buf
, "OK") == 0)
5235 if (strlen (buf
) == 3 && buf
[0] == 'E'
5236 && isdigit (buf
[1]) && isdigit (buf
[2]))
5238 error ("Protocol error with Rcmd");
5240 for (p
= buf
; p
[0] != '\0' && p
[1] != '\0'; p
+= 2)
5242 char c
= (fromhex (p
[0]) << 4) + fromhex (p
[1]);
5243 fputc_unfiltered (c
, outbuf
);
5250 packet_command (char *args
, int from_tty
)
5252 struct remote_state
*rs
= get_remote_state ();
5253 char *buf
= alloca (rs
->remote_packet_size
);
5256 error ("command can only be used with remote target");
5259 error ("remote-packet command requires packet text as argument");
5261 puts_filtered ("sending: ");
5262 print_packet (args
);
5263 puts_filtered ("\n");
5266 getpkt (buf
, (rs
->remote_packet_size
), 0);
5267 puts_filtered ("received: ");
5269 puts_filtered ("\n");
5273 /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------------- */
5275 static void display_thread_info (struct gdb_ext_thread_info
*info
);
5277 static void threadset_test_cmd (char *cmd
, int tty
);
5279 static void threadalive_test (char *cmd
, int tty
);
5281 static void threadlist_test_cmd (char *cmd
, int tty
);
5283 int get_and_display_threadinfo (threadref
* ref
);
5285 static void threadinfo_test_cmd (char *cmd
, int tty
);
5287 static int thread_display_step (threadref
* ref
, void *context
);
5289 static void threadlist_update_test_cmd (char *cmd
, int tty
);
5291 static void init_remote_threadtests (void);
5293 #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid */
5296 threadset_test_cmd (char *cmd
, int tty
)
5298 int sample_thread
= SAMPLE_THREAD
;
5300 printf_filtered ("Remote threadset test\n");
5301 set_thread (sample_thread
, 1);
5306 threadalive_test (char *cmd
, int tty
)
5308 int sample_thread
= SAMPLE_THREAD
;
5310 if (remote_thread_alive (pid_to_ptid (sample_thread
)))
5311 printf_filtered ("PASS: Thread alive test\n");
5313 printf_filtered ("FAIL: Thread alive test\n");
5316 void output_threadid (char *title
, threadref
* ref
);
5319 output_threadid (char *title
, threadref
*ref
)
5323 pack_threadid (&hexid
[0], ref
); /* Convert threead id into hex */
5325 printf_filtered ("%s %s\n", title
, (&hexid
[0]));
5329 threadlist_test_cmd (char *cmd
, int tty
)
5332 threadref nextthread
;
5333 int done
, result_count
;
5334 threadref threadlist
[3];
5336 printf_filtered ("Remote Threadlist test\n");
5337 if (!remote_get_threadlist (startflag
, &nextthread
, 3, &done
,
5338 &result_count
, &threadlist
[0]))
5339 printf_filtered ("FAIL: threadlist test\n");
5342 threadref
*scan
= threadlist
;
5343 threadref
*limit
= scan
+ result_count
;
5345 while (scan
< limit
)
5346 output_threadid (" thread ", scan
++);
5351 display_thread_info (struct gdb_ext_thread_info
*info
)
5353 output_threadid ("Threadid: ", &info
->threadid
);
5354 printf_filtered ("Name: %s\n ", info
->shortname
);
5355 printf_filtered ("State: %s\n", info
->display
);
5356 printf_filtered ("other: %s\n\n", info
->more_display
);
5360 get_and_display_threadinfo (threadref
*ref
)
5364 struct gdb_ext_thread_info threadinfo
;
5366 set
= TAG_THREADID
| TAG_EXISTS
| TAG_THREADNAME
5367 | TAG_MOREDISPLAY
| TAG_DISPLAY
;
5368 if (0 != (result
= remote_get_threadinfo (ref
, set
, &threadinfo
)))
5369 display_thread_info (&threadinfo
);
5374 threadinfo_test_cmd (char *cmd
, int tty
)
5376 int athread
= SAMPLE_THREAD
;
5380 int_to_threadref (&thread
, athread
);
5381 printf_filtered ("Remote Threadinfo test\n");
5382 if (!get_and_display_threadinfo (&thread
))
5383 printf_filtered ("FAIL cannot get thread info\n");
5387 thread_display_step (threadref
*ref
, void *context
)
5389 /* output_threadid(" threadstep ",ref); *//* simple test */
5390 return get_and_display_threadinfo (ref
);
5394 threadlist_update_test_cmd (char *cmd
, int tty
)
5396 printf_filtered ("Remote Threadlist update test\n");
5397 remote_threadlist_iterator (thread_display_step
, 0, CRAZY_MAX_THREADS
);
5401 init_remote_threadtests (void)
5403 add_com ("tlist", class_obscure
, threadlist_test_cmd
,
5404 "Fetch and print the remote list of thread identifiers, one pkt only");
5405 add_com ("tinfo", class_obscure
, threadinfo_test_cmd
,
5406 "Fetch and display info about one thread");
5407 add_com ("tset", class_obscure
, threadset_test_cmd
,
5408 "Test setting to a different thread");
5409 add_com ("tupd", class_obscure
, threadlist_update_test_cmd
,
5410 "Iterate through updating all remote thread info");
5411 add_com ("talive", class_obscure
, threadalive_test
,
5412 " Remote thread alive test ");
5417 /* Convert a thread ID to a string. Returns the string in a static
5421 remote_pid_to_str (ptid_t ptid
)
5423 static char buf
[30];
5425 sprintf (buf
, "Thread %d", PIDGET (ptid
));
5430 init_remote_ops (void)
5432 remote_ops
.to_shortname
= "remote";
5433 remote_ops
.to_longname
= "Remote serial target in gdb-specific protocol";
5435 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
5436 Specify the serial device it is connected to\n\
5437 (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).";
5438 remote_ops
.to_open
= remote_open
;
5439 remote_ops
.to_close
= remote_close
;
5440 remote_ops
.to_detach
= remote_detach
;
5441 remote_ops
.to_resume
= remote_resume
;
5442 remote_ops
.to_wait
= remote_wait
;
5443 remote_ops
.to_fetch_registers
= remote_fetch_registers
;
5444 remote_ops
.to_store_registers
= remote_store_registers
;
5445 remote_ops
.to_prepare_to_store
= remote_prepare_to_store
;
5446 remote_ops
.to_xfer_memory
= remote_xfer_memory
;
5447 remote_ops
.to_files_info
= remote_files_info
;
5448 remote_ops
.to_insert_breakpoint
= remote_insert_breakpoint
;
5449 remote_ops
.to_remove_breakpoint
= remote_remove_breakpoint
;
5450 remote_ops
.to_stopped_by_watchpoint
= remote_stopped_by_watchpoint
;
5451 remote_ops
.to_stopped_data_address
= remote_stopped_data_address
;
5452 remote_ops
.to_can_use_hw_breakpoint
= remote_check_watch_resources
;
5453 remote_ops
.to_insert_hw_breakpoint
= remote_insert_hw_breakpoint
;
5454 remote_ops
.to_remove_hw_breakpoint
= remote_remove_hw_breakpoint
;
5455 remote_ops
.to_insert_watchpoint
= remote_insert_watchpoint
;
5456 remote_ops
.to_remove_watchpoint
= remote_remove_watchpoint
;
5457 remote_ops
.to_kill
= remote_kill
;
5458 remote_ops
.to_load
= generic_load
;
5459 remote_ops
.to_mourn_inferior
= remote_mourn
;
5460 remote_ops
.to_thread_alive
= remote_thread_alive
;
5461 remote_ops
.to_find_new_threads
= remote_threads_info
;
5462 remote_ops
.to_pid_to_str
= remote_pid_to_str
;
5463 remote_ops
.to_extra_thread_info
= remote_threads_extra_info
;
5464 remote_ops
.to_stop
= remote_stop
;
5465 remote_ops
.to_query
= remote_query
;
5466 remote_ops
.to_rcmd
= remote_rcmd
;
5467 remote_ops
.to_stratum
= process_stratum
;
5468 remote_ops
.to_has_all_memory
= 1;
5469 remote_ops
.to_has_memory
= 1;
5470 remote_ops
.to_has_stack
= 1;
5471 remote_ops
.to_has_registers
= 1;
5472 remote_ops
.to_has_execution
= 1;
5473 remote_ops
.to_has_thread_control
= tc_schedlock
; /* can lock scheduler */
5474 remote_ops
.to_magic
= OPS_MAGIC
;
5477 /* Set up the extended remote vector by making a copy of the standard
5478 remote vector and adding to it. */
5481 init_extended_remote_ops (void)
5483 extended_remote_ops
= remote_ops
;
5485 extended_remote_ops
.to_shortname
= "extended-remote";
5486 extended_remote_ops
.to_longname
=
5487 "Extended remote serial target in gdb-specific protocol";
5488 extended_remote_ops
.to_doc
=
5489 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
5490 Specify the serial device it is connected to (e.g. /dev/ttya).",
5491 extended_remote_ops
.to_open
= extended_remote_open
;
5492 extended_remote_ops
.to_create_inferior
= extended_remote_create_inferior
;
5493 extended_remote_ops
.to_mourn_inferior
= extended_remote_mourn
;
5497 * Command: info remote-process
5499 * This implements Cisco's version of the "info proc" command.
5501 * This query allows the target stub to return an arbitrary string
5502 * (or strings) giving arbitrary information about the target process.
5503 * This is optional; the target stub isn't required to implement it.
5505 * Syntax: qfProcessInfo request first string
5506 * qsProcessInfo request subsequent string
5507 * reply: 'O'<hex-encoded-string>
5508 * 'l' last reply (empty)
5512 remote_info_process (char *args
, int from_tty
)
5514 struct remote_state
*rs
= get_remote_state ();
5515 char *buf
= alloca (rs
->remote_packet_size
);
5517 if (remote_desc
== 0)
5518 error ("Command can only be used when connected to the remote target.");
5520 putpkt ("qfProcessInfo");
5521 getpkt (buf
, (rs
->remote_packet_size
), 0);
5523 return; /* Silently: target does not support this feature. */
5526 error ("info proc: target error.");
5528 while (buf
[0] == 'O') /* Capitol-O packet */
5530 remote_console_output (&buf
[1]);
5531 putpkt ("qsProcessInfo");
5532 getpkt (buf
, (rs
->remote_packet_size
), 0);
5541 remote_cisco_open (char *name
, int from_tty
)
5545 error ("To open a remote debug connection, you need to specify what \n"
5546 "device is attached to the remote system (e.g. host:port).");
5548 /* See FIXME above */
5549 wait_forever_enabled_p
= 1;
5551 target_preopen (from_tty
);
5553 unpush_target (&remote_cisco_ops
);
5555 remote_desc
= remote_serial_open (name
);
5557 perror_with_name (name
);
5560 * If a baud rate was specified on the gdb command line it will
5561 * be greater than the initial value of -1. If it is, use it otherwise
5565 baud_rate
= (baud_rate
> 0) ? baud_rate
: 9600;
5566 if (serial_setbaudrate (remote_desc
, baud_rate
))
5568 serial_close (remote_desc
);
5569 perror_with_name (name
);
5572 serial_raw (remote_desc
);
5574 /* If there is something sitting in the buffer we might take it as a
5575 response to a command, which would be bad. */
5576 serial_flush_input (remote_desc
);
5580 puts_filtered ("Remote debugging using ");
5581 puts_filtered (name
);
5582 puts_filtered ("\n");
5585 remote_cisco_mode
= 1;
5587 push_target (&remote_cisco_ops
); /* Switch to using cisco target now */
5589 init_all_packet_configs ();
5591 general_thread
= -2;
5592 continue_thread
= -2;
5594 /* Probe for ability to use "ThreadInfo" query, as required. */
5595 use_threadinfo_query
= 1;
5596 use_threadextra_query
= 1;
5598 /* Without this, some commands which require an active target (such
5599 as kill) won't work. This variable serves (at least) double duty
5600 as both the pid of the target process (if it has such), and as a
5601 flag indicating that a target is active. These functions should
5602 be split out into seperate variables, especially since GDB will
5603 someday have a notion of debugging several processes. */
5604 inferior_ptid
= pid_to_ptid (MAGIC_NULL_PID
);
5606 /* Start the remote connection; if error, discard this target. See
5607 the comments in remote_open_1() for further details such as the
5608 need to re-throw the exception. */
5609 ex
= catch_exceptions (uiout
,
5610 remote_start_remote_dummy
, NULL
,
5611 "Couldn't establish connection to remote"
5617 throw_exception (ex
);
5622 remote_cisco_close (int quitting
)
5624 remote_cisco_mode
= 0;
5625 remote_close (quitting
);
5629 remote_cisco_mourn (void)
5631 remote_mourn_1 (&remote_cisco_ops
);
5643 /* Shared between readsocket() and readtty(). The size is arbitrary,
5644 however all targets are known to support a 400 character packet. */
5645 static char tty_input
[400];
5647 static int escape_count
;
5648 static int echo_check
;
5649 extern int quit_flag
;
5656 /* Loop until the socket doesn't have any more data */
5658 while ((data
= readchar (0)) >= 0)
5660 /* Check for the escape sequence */
5663 /* If this is the fourth escape, get out */
5664 if (++escape_count
== 4)
5669 { /* This is a '|', but not the fourth in a row.
5670 Continue without echoing it. If it isn't actually
5671 one of four in a row, it'll be echoed later. */
5678 /* Ensure any pending '|'s are flushed. */
5680 for (; escape_count
> 0; escape_count
--)
5684 if (data
== '\r') /* If this is a return character, */
5685 continue; /* - just supress it. */
5687 if (echo_check
!= -1) /* Check for echo of user input. */
5689 if (tty_input
[echo_check
] == data
)
5691 gdb_assert (echo_check
<= sizeof (tty_input
));
5692 echo_check
++; /* Character matched user input: */
5693 continue; /* Continue without echoing it. */
5695 else if ((data
== '\n') && (tty_input
[echo_check
] == '\r'))
5696 { /* End of the line (and of echo checking). */
5697 echo_check
= -1; /* No more echo supression */
5698 continue; /* Continue without echoing. */
5701 { /* Failed check for echo of user input.
5702 We now have some suppressed output to flush! */
5705 for (j
= 0; j
< echo_check
; j
++)
5706 putchar (tty_input
[j
]);
5710 putchar (data
); /* Default case: output the char. */
5713 if (data
== SERIAL_TIMEOUT
) /* Timeout returned from readchar. */
5714 return READ_MORE
; /* Try to read some more */
5716 return FATAL_ERROR
; /* Trouble, bail out */
5724 /* First, read a buffer full from the terminal */
5725 tty_bytecount
= read (fileno (stdin
), tty_input
, sizeof (tty_input
) - 1);
5726 if (tty_bytecount
== -1)
5728 perror ("readtty: read failed");
5732 /* Remove a quoted newline. */
5733 if (tty_input
[tty_bytecount
- 1] == '\n' &&
5734 tty_input
[tty_bytecount
- 2] == '\\') /* line ending in backslash */
5736 tty_input
[--tty_bytecount
] = 0; /* remove newline */
5737 tty_input
[--tty_bytecount
] = 0; /* remove backslash */
5740 /* Turn trailing newlines into returns */
5741 if (tty_input
[tty_bytecount
- 1] == '\n')
5742 tty_input
[tty_bytecount
- 1] = '\r';
5744 /* If the line consists of a ~, enter debugging mode. */
5745 if ((tty_input
[0] == '~') && (tty_bytecount
== 2))
5748 /* Make this a zero terminated string and write it out */
5749 tty_input
[tty_bytecount
] = 0;
5750 if (serial_write (remote_desc
, tty_input
, tty_bytecount
))
5752 perror_with_name ("readtty: write failed");
5762 fd_set input
; /* file descriptors for select */
5763 int tablesize
; /* max number of FDs for select */
5770 tablesize
= 8 * sizeof (input
);
5774 /* Check for anything from our socket - doesn't block. Note that
5775 this must be done *before* the select as there may be
5776 buffered I/O waiting to be processed. */
5778 if ((status
= readsocket ()) == FATAL_ERROR
)
5780 error ("Debugging terminated by communications error");
5782 else if (status
!= READ_MORE
)
5787 fflush (stdout
); /* Flush output before blocking */
5789 /* Now block on more socket input or TTY input */
5792 FD_SET (fileno (stdin
), &input
);
5793 FD_SET (deprecated_serial_fd (remote_desc
), &input
);
5795 status
= select (tablesize
, &input
, 0, 0, 0);
5796 if ((status
== -1) && (errno
!= EINTR
))
5798 error ("Communications error on select %d", errno
);
5801 /* Handle Control-C typed */
5805 if ((++quit_count
) == 2)
5807 if (query ("Interrupt GDB? "))
5809 printf_filtered ("Interrupted by user.\n");
5810 throw_exception (RETURN_QUIT
);
5817 serial_send_break (remote_desc
);
5819 serial_write (remote_desc
, "\003", 1);
5824 /* Handle console input */
5826 if (FD_ISSET (fileno (stdin
), &input
))
5830 status
= readtty ();
5831 if (status
== READ_MORE
)
5834 return status
; /* telnet session ended */
5840 remote_cisco_wait (ptid_t ptid
, struct target_waitstatus
*status
)
5842 if (minitelnet () != ENTER_DEBUG
)
5844 error ("Debugging session terminated by protocol error");
5847 return remote_wait (ptid
, status
);
5851 init_remote_cisco_ops (void)
5853 remote_cisco_ops
.to_shortname
= "cisco";
5854 remote_cisco_ops
.to_longname
= "Remote serial target in cisco-specific protocol";
5855 remote_cisco_ops
.to_doc
=
5856 "Use a remote machine via TCP, using a cisco-specific protocol.\n\
5857 Specify the serial device it is connected to (e.g. host:2020).";
5858 remote_cisco_ops
.to_open
= remote_cisco_open
;
5859 remote_cisco_ops
.to_close
= remote_cisco_close
;
5860 remote_cisco_ops
.to_detach
= remote_detach
;
5861 remote_cisco_ops
.to_resume
= remote_resume
;
5862 remote_cisco_ops
.to_wait
= remote_cisco_wait
;
5863 remote_cisco_ops
.to_fetch_registers
= remote_fetch_registers
;
5864 remote_cisco_ops
.to_store_registers
= remote_store_registers
;
5865 remote_cisco_ops
.to_prepare_to_store
= remote_prepare_to_store
;
5866 remote_cisco_ops
.to_xfer_memory
= remote_xfer_memory
;
5867 remote_cisco_ops
.to_files_info
= remote_files_info
;
5868 remote_cisco_ops
.to_insert_breakpoint
= remote_insert_breakpoint
;
5869 remote_cisco_ops
.to_remove_breakpoint
= remote_remove_breakpoint
;
5870 remote_cisco_ops
.to_remove_hw_breakpoint
= remote_remove_hw_breakpoint
;
5871 remote_cisco_ops
.to_insert_hw_breakpoint
= remote_insert_hw_breakpoint
;
5872 remote_cisco_ops
.to_insert_watchpoint
= remote_insert_watchpoint
;
5873 remote_cisco_ops
.to_remove_watchpoint
= remote_remove_watchpoint
;
5874 remote_cisco_ops
.to_stopped_by_watchpoint
= remote_stopped_by_watchpoint
;
5875 remote_cisco_ops
.to_stopped_data_address
= remote_stopped_data_address
;
5876 remote_cisco_ops
.to_can_use_hw_breakpoint
= remote_check_watch_resources
;
5877 remote_cisco_ops
.to_kill
= remote_kill
;
5878 remote_cisco_ops
.to_load
= generic_load
;
5879 remote_cisco_ops
.to_mourn_inferior
= remote_cisco_mourn
;
5880 remote_cisco_ops
.to_thread_alive
= remote_thread_alive
;
5881 remote_cisco_ops
.to_find_new_threads
= remote_threads_info
;
5882 remote_cisco_ops
.to_pid_to_str
= remote_pid_to_str
;
5883 remote_cisco_ops
.to_extra_thread_info
= remote_threads_extra_info
;
5884 remote_cisco_ops
.to_stratum
= process_stratum
;
5885 remote_cisco_ops
.to_has_all_memory
= 1;
5886 remote_cisco_ops
.to_has_memory
= 1;
5887 remote_cisco_ops
.to_has_stack
= 1;
5888 remote_cisco_ops
.to_has_registers
= 1;
5889 remote_cisco_ops
.to_has_execution
= 1;
5890 remote_cisco_ops
.to_magic
= OPS_MAGIC
;
5894 remote_can_async_p (void)
5896 /* We're async whenever the serial device is. */
5897 return (current_target
.to_async_mask_value
) && serial_can_async_p (remote_desc
);
5901 remote_is_async_p (void)
5903 /* We're async whenever the serial device is. */
5904 return (current_target
.to_async_mask_value
) && serial_is_async_p (remote_desc
);
5907 /* Pass the SERIAL event on and up to the client. One day this code
5908 will be able to delay notifying the client of an event until the
5909 point where an entire packet has been received. */
5911 static void (*async_client_callback
) (enum inferior_event_type event_type
, void *context
);
5912 static void *async_client_context
;
5913 static serial_event_ftype remote_async_serial_handler
;
5916 remote_async_serial_handler (struct serial
*scb
, void *context
)
5918 /* Don't propogate error information up to the client. Instead let
5919 the client find out about the error by querying the target. */
5920 async_client_callback (INF_REG_EVENT
, async_client_context
);
5924 remote_async (void (*callback
) (enum inferior_event_type event_type
, void *context
), void *context
)
5926 if (current_target
.to_async_mask_value
== 0)
5927 internal_error (__FILE__
, __LINE__
,
5928 "Calling remote_async when async is masked");
5930 if (callback
!= NULL
)
5932 serial_async (remote_desc
, remote_async_serial_handler
, NULL
);
5933 async_client_callback
= callback
;
5934 async_client_context
= context
;
5937 serial_async (remote_desc
, NULL
, NULL
);
5940 /* Target async and target extended-async.
5942 This are temporary targets, until it is all tested. Eventually
5943 async support will be incorporated int the usual 'remote'
5947 init_remote_async_ops (void)
5949 remote_async_ops
.to_shortname
= "async";
5950 remote_async_ops
.to_longname
= "Remote serial target in async version of the gdb-specific protocol";
5951 remote_async_ops
.to_doc
=
5952 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
5953 Specify the serial device it is connected to (e.g. /dev/ttya).";
5954 remote_async_ops
.to_open
= remote_async_open
;
5955 remote_async_ops
.to_close
= remote_close
;
5956 remote_async_ops
.to_detach
= remote_async_detach
;
5957 remote_async_ops
.to_resume
= remote_async_resume
;
5958 remote_async_ops
.to_wait
= remote_async_wait
;
5959 remote_async_ops
.to_fetch_registers
= remote_fetch_registers
;
5960 remote_async_ops
.to_store_registers
= remote_store_registers
;
5961 remote_async_ops
.to_prepare_to_store
= remote_prepare_to_store
;
5962 remote_async_ops
.to_xfer_memory
= remote_xfer_memory
;
5963 remote_async_ops
.to_files_info
= remote_files_info
;
5964 remote_async_ops
.to_insert_breakpoint
= remote_insert_breakpoint
;
5965 remote_async_ops
.to_remove_breakpoint
= remote_remove_breakpoint
;
5966 remote_async_ops
.to_can_use_hw_breakpoint
= remote_check_watch_resources
;
5967 remote_async_ops
.to_insert_hw_breakpoint
= remote_insert_hw_breakpoint
;
5968 remote_async_ops
.to_remove_hw_breakpoint
= remote_remove_hw_breakpoint
;
5969 remote_async_ops
.to_insert_watchpoint
= remote_insert_watchpoint
;
5970 remote_async_ops
.to_remove_watchpoint
= remote_remove_watchpoint
;
5971 remote_async_ops
.to_stopped_by_watchpoint
= remote_stopped_by_watchpoint
;
5972 remote_async_ops
.to_stopped_data_address
= remote_stopped_data_address
;
5973 remote_async_ops
.to_terminal_inferior
= remote_async_terminal_inferior
;
5974 remote_async_ops
.to_terminal_ours
= remote_async_terminal_ours
;
5975 remote_async_ops
.to_kill
= remote_async_kill
;
5976 remote_async_ops
.to_load
= generic_load
;
5977 remote_async_ops
.to_mourn_inferior
= remote_async_mourn
;
5978 remote_async_ops
.to_thread_alive
= remote_thread_alive
;
5979 remote_async_ops
.to_find_new_threads
= remote_threads_info
;
5980 remote_async_ops
.to_pid_to_str
= remote_pid_to_str
;
5981 remote_async_ops
.to_extra_thread_info
= remote_threads_extra_info
;
5982 remote_async_ops
.to_stop
= remote_stop
;
5983 remote_async_ops
.to_query
= remote_query
;
5984 remote_async_ops
.to_rcmd
= remote_rcmd
;
5985 remote_async_ops
.to_stratum
= process_stratum
;
5986 remote_async_ops
.to_has_all_memory
= 1;
5987 remote_async_ops
.to_has_memory
= 1;
5988 remote_async_ops
.to_has_stack
= 1;
5989 remote_async_ops
.to_has_registers
= 1;
5990 remote_async_ops
.to_has_execution
= 1;
5991 remote_async_ops
.to_has_thread_control
= tc_schedlock
; /* can lock scheduler */
5992 remote_async_ops
.to_can_async_p
= remote_can_async_p
;
5993 remote_async_ops
.to_is_async_p
= remote_is_async_p
;
5994 remote_async_ops
.to_async
= remote_async
;
5995 remote_async_ops
.to_async_mask_value
= 1;
5996 remote_async_ops
.to_magic
= OPS_MAGIC
;
5999 /* Set up the async extended remote vector by making a copy of the standard
6000 remote vector and adding to it. */
6003 init_extended_async_remote_ops (void)
6005 extended_async_remote_ops
= remote_async_ops
;
6007 extended_async_remote_ops
.to_shortname
= "extended-async";
6008 extended_async_remote_ops
.to_longname
=
6009 "Extended remote serial target in async gdb-specific protocol";
6010 extended_async_remote_ops
.to_doc
=
6011 "Use a remote computer via a serial line, using an async gdb-specific protocol.\n\
6012 Specify the serial device it is connected to (e.g. /dev/ttya).",
6013 extended_async_remote_ops
.to_open
= extended_remote_async_open
;
6014 extended_async_remote_ops
.to_create_inferior
= extended_remote_async_create_inferior
;
6015 extended_async_remote_ops
.to_mourn_inferior
= extended_remote_mourn
;
6019 set_remote_cmd (char *args
, int from_tty
)
6024 show_remote_cmd (char *args
, int from_tty
)
6026 /* FIXME: cagney/2002-06-15: This function should iterate over
6027 remote_show_cmdlist for a list of sub commands to show. */
6028 show_remote_protocol_Z_packet_cmd (args
, from_tty
, NULL
);
6029 show_remote_protocol_e_packet_cmd (args
, from_tty
, NULL
);
6030 show_remote_protocol_E_packet_cmd (args
, from_tty
, NULL
);
6031 show_remote_protocol_P_packet_cmd (args
, from_tty
, NULL
);
6032 show_remote_protocol_qSymbol_packet_cmd (args
, from_tty
, NULL
);
6033 show_remote_protocol_binary_download_cmd (args
, from_tty
, NULL
);
6037 build_remote_gdbarch_data (void)
6039 remote_address_size
= TARGET_ADDR_BIT
;
6042 /* Saved pointer to previous owner of the new_objfile event. */
6043 static void (*remote_new_objfile_chain
) (struct objfile
*);
6045 /* Function to be called whenever a new objfile (shlib) is detected. */
6047 remote_new_objfile (struct objfile
*objfile
)
6049 if (remote_desc
!= 0) /* Have a remote connection */
6051 remote_check_symbols (objfile
);
6053 /* Call predecessor on chain, if any. */
6054 if (remote_new_objfile_chain
!= 0 &&
6056 remote_new_objfile_chain (objfile
);
6060 _initialize_remote (void)
6062 static struct cmd_list_element
*remote_set_cmdlist
;
6063 static struct cmd_list_element
*remote_show_cmdlist
;
6064 struct cmd_list_element
*tmpcmd
;
6066 /* architecture specific data */
6067 remote_gdbarch_data_handle
= register_gdbarch_data (init_remote_state
,
6070 /* Old tacky stuff. NOTE: This comes after the remote protocol so
6071 that the remote protocol has been initialized. */
6072 register_gdbarch_swap (&remote_address_size
,
6073 sizeof (&remote_address_size
), NULL
);
6074 register_gdbarch_swap (NULL
, 0, build_remote_gdbarch_data
);
6077 add_target (&remote_ops
);
6079 init_extended_remote_ops ();
6080 add_target (&extended_remote_ops
);
6082 init_remote_async_ops ();
6083 add_target (&remote_async_ops
);
6085 init_extended_async_remote_ops ();
6086 add_target (&extended_async_remote_ops
);
6088 init_remote_cisco_ops ();
6089 add_target (&remote_cisco_ops
);
6091 /* Hook into new objfile notification. */
6092 remote_new_objfile_chain
= target_new_objfile_hook
;
6093 target_new_objfile_hook
= remote_new_objfile
;
6096 init_remote_threadtests ();
6099 /* set/show remote ... */
6101 add_prefix_cmd ("remote", class_maintenance
, set_remote_cmd
, "\
6102 Remote protocol specific variables\n\
6103 Configure various remote-protocol specific variables such as\n\
6104 the packets being used",
6105 &remote_set_cmdlist
, "set remote ",
6106 0/*allow-unknown*/, &setlist
);
6107 add_prefix_cmd ("remote", class_maintenance
, show_remote_cmd
, "\
6108 Remote protocol specific variables\n\
6109 Configure various remote-protocol specific variables such as\n\
6110 the packets being used",
6111 &remote_show_cmdlist
, "show remote ",
6112 0/*allow-unknown*/, &showlist
);
6114 add_cmd ("compare-sections", class_obscure
, compare_sections_command
,
6115 "Compare section data on target to the exec file.\n\
6116 Argument is a single section name (default: all loaded sections).",
6119 add_cmd ("packet", class_maintenance
, packet_command
,
6120 "Send an arbitrary packet to a remote target.\n\
6121 maintenance packet TEXT\n\
6122 If GDB is talking to an inferior via the GDB serial protocol, then\n\
6123 this command sends the string TEXT to the inferior, and displays the\n\
6124 response packet. GDB supplies the initial `$' character, and the\n\
6125 terminating `#' character and checksum.",
6128 add_setshow_boolean_cmd ("remotebreak", no_class
, &remote_break
,
6129 "Set whether to send break if interrupted.\n",
6130 "Show whether to send break if interrupted.\n",
6132 &setlist
, &showlist
);
6134 /* Install commands for configuring memory read/write packets. */
6136 add_cmd ("remotewritesize", no_class
, set_memory_write_packet_size
,
6137 "Set the maximum number of bytes per memory write packet (deprecated).\n",
6139 add_cmd ("remotewritesize", no_class
, show_memory_write_packet_size
,
6140 "Show the maximum number of bytes per memory write packet (deprecated).\n",
6142 add_cmd ("memory-write-packet-size", no_class
,
6143 set_memory_write_packet_size
,
6144 "Set the maximum number of bytes per memory-write packet.\n"
6145 "Specify the number of bytes in a packet or 0 (zero) for the\n"
6146 "default packet size. The actual limit is further reduced\n"
6147 "dependent on the target. Specify ``fixed'' to disable the\n"
6148 "further restriction and ``limit'' to enable that restriction\n",
6149 &remote_set_cmdlist
);
6150 add_cmd ("memory-read-packet-size", no_class
,
6151 set_memory_read_packet_size
,
6152 "Set the maximum number of bytes per memory-read packet.\n"
6153 "Specify the number of bytes in a packet or 0 (zero) for the\n"
6154 "default packet size. The actual limit is further reduced\n"
6155 "dependent on the target. Specify ``fixed'' to disable the\n"
6156 "further restriction and ``limit'' to enable that restriction\n",
6157 &remote_set_cmdlist
);
6158 add_cmd ("memory-write-packet-size", no_class
,
6159 show_memory_write_packet_size
,
6160 "Show the maximum number of bytes per memory-write packet.\n",
6161 &remote_show_cmdlist
);
6162 add_cmd ("memory-read-packet-size", no_class
,
6163 show_memory_read_packet_size
,
6164 "Show the maximum number of bytes per memory-read packet.\n",
6165 &remote_show_cmdlist
);
6167 add_setshow_cmd ("hardware-watchpoint-limit", no_class
,
6168 var_zinteger
, &remote_hw_watchpoint_limit
, "\
6169 Set the maximum number of target hardware watchpoints.\n\
6170 Specify a negative limit for unlimited.", "\
6171 Show the maximum number of target hardware watchpoints.\n",
6172 NULL
, NULL
, &remote_set_cmdlist
, &remote_show_cmdlist
);
6173 add_setshow_cmd ("hardware-breakpoint-limit", no_class
,
6174 var_zinteger
, &remote_hw_breakpoint_limit
, "\
6175 Set the maximum number of target hardware breakpoints.\n\
6176 Specify a negative limit for unlimited.", "\
6177 Show the maximum number of target hardware breakpoints.\n",
6178 NULL
, NULL
, &remote_set_cmdlist
, &remote_show_cmdlist
);
6181 (add_set_cmd ("remoteaddresssize", class_obscure
,
6182 var_integer
, (char *) &remote_address_size
,
6183 "Set the maximum size of the address (in bits) \
6184 in a memory packet.\n",
6188 add_packet_config_cmd (&remote_protocol_binary_download
,
6189 "X", "binary-download",
6190 set_remote_protocol_binary_download_cmd
,
6191 show_remote_protocol_binary_download_cmd
,
6192 &remote_set_cmdlist
, &remote_show_cmdlist
,
6195 /* XXXX - should ``set remotebinarydownload'' be retained for
6198 (add_set_cmd ("remotebinarydownload", no_class
,
6199 var_boolean
, (char *) &remote_binary_download
,
6200 "Set binary downloads.\n", &setlist
),
6204 add_info ("remote-process", remote_info_process
,
6205 "Query the remote system for process info.");
6207 add_packet_config_cmd (&remote_protocol_qSymbol
,
6208 "qSymbol", "symbol-lookup",
6209 set_remote_protocol_qSymbol_packet_cmd
,
6210 show_remote_protocol_qSymbol_packet_cmd
,
6211 &remote_set_cmdlist
, &remote_show_cmdlist
,
6214 add_packet_config_cmd (&remote_protocol_e
,
6215 "e", "step-over-range",
6216 set_remote_protocol_e_packet_cmd
,
6217 show_remote_protocol_e_packet_cmd
,
6218 &remote_set_cmdlist
, &remote_show_cmdlist
,
6220 /* Disable by default. The ``e'' packet has nasty interactions with
6221 the threading code - it relies on global state. */
6222 remote_protocol_e
.detect
= AUTO_BOOLEAN_FALSE
;
6223 update_packet_config (&remote_protocol_e
);
6225 add_packet_config_cmd (&remote_protocol_E
,
6226 "E", "step-over-range-w-signal",
6227 set_remote_protocol_E_packet_cmd
,
6228 show_remote_protocol_E_packet_cmd
,
6229 &remote_set_cmdlist
, &remote_show_cmdlist
,
6231 /* Disable by default. The ``e'' packet has nasty interactions with
6232 the threading code - it relies on global state. */
6233 remote_protocol_E
.detect
= AUTO_BOOLEAN_FALSE
;
6234 update_packet_config (&remote_protocol_E
);
6236 add_packet_config_cmd (&remote_protocol_P
,
6237 "P", "set-register",
6238 set_remote_protocol_P_packet_cmd
,
6239 show_remote_protocol_P_packet_cmd
,
6240 &remote_set_cmdlist
, &remote_show_cmdlist
,
6243 add_packet_config_cmd (&remote_protocol_Z
[Z_PACKET_SOFTWARE_BP
],
6244 "Z0", "software-breakpoint",
6245 set_remote_protocol_Z_software_bp_packet_cmd
,
6246 show_remote_protocol_Z_software_bp_packet_cmd
,
6247 &remote_set_cmdlist
, &remote_show_cmdlist
,
6250 add_packet_config_cmd (&remote_protocol_Z
[Z_PACKET_HARDWARE_BP
],
6251 "Z1", "hardware-breakpoint",
6252 set_remote_protocol_Z_hardware_bp_packet_cmd
,
6253 show_remote_protocol_Z_hardware_bp_packet_cmd
,
6254 &remote_set_cmdlist
, &remote_show_cmdlist
,
6257 add_packet_config_cmd (&remote_protocol_Z
[Z_PACKET_WRITE_WP
],
6258 "Z2", "write-watchpoint",
6259 set_remote_protocol_Z_write_wp_packet_cmd
,
6260 show_remote_protocol_Z_write_wp_packet_cmd
,
6261 &remote_set_cmdlist
, &remote_show_cmdlist
,
6264 add_packet_config_cmd (&remote_protocol_Z
[Z_PACKET_READ_WP
],
6265 "Z3", "read-watchpoint",
6266 set_remote_protocol_Z_read_wp_packet_cmd
,
6267 show_remote_protocol_Z_read_wp_packet_cmd
,
6268 &remote_set_cmdlist
, &remote_show_cmdlist
,
6271 add_packet_config_cmd (&remote_protocol_Z
[Z_PACKET_ACCESS_WP
],
6272 "Z4", "access-watchpoint",
6273 set_remote_protocol_Z_access_wp_packet_cmd
,
6274 show_remote_protocol_Z_access_wp_packet_cmd
,
6275 &remote_set_cmdlist
, &remote_show_cmdlist
,
6278 /* Keep the old ``set remote Z-packet ...'' working. */
6279 add_setshow_auto_boolean_cmd ("Z-packet", class_obscure
,
6280 &remote_Z_packet_detect
, "\
6281 Set use of remote protocol `Z' packets",
6282 "Show use of remote protocol `Z' packets ",
6283 set_remote_protocol_Z_packet_cmd
,
6284 show_remote_protocol_Z_packet_cmd
,
6285 &remote_set_cmdlist
, &remote_show_cmdlist
);
6287 /* Eventually initialize fileio. See fileio.c */
6288 initialize_remote_fileio (remote_set_cmdlist
, remote_show_cmdlist
);