1 /* Remote target communications for serial-line targets in custom GDB protocol
3 Copyright 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996,
4 1997, 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
6 This file is part of GDB.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 59 Temple Place - Suite 330,
21 Boston, MA 02111-1307, USA. */
23 /* See the GDB User Guide for details of the GDB remote protocol. */
26 #include "gdb_string.h"
33 /*#include "terminal.h" */
36 #include "gdb-stabs.h"
37 #include "gdbthread.h"
41 #include "gdb_assert.h"
46 #include <sys/types.h>
49 #include "event-loop.h"
50 #include "event-top.h"
56 #include "gdbcore.h" /* for exec_bfd */
58 #include "remote-fileio.h"
60 /* Prototypes for local functions */
61 static void cleanup_sigint_signal_handler (void *dummy
);
62 static void initialize_sigint_signal_handler (void);
63 static int getpkt_sane (char *buf
, long sizeof_buf
, int forever
);
65 static void handle_remote_sigint (int);
66 static void handle_remote_sigint_twice (int);
67 static void async_remote_interrupt (gdb_client_data
);
68 void async_remote_interrupt_twice (gdb_client_data
);
70 static void build_remote_gdbarch_data (void);
72 static void remote_files_info (struct target_ops
*ignore
);
74 static int remote_xfer_memory (CORE_ADDR memaddr
, char *myaddr
,
75 int len
, int should_write
,
76 struct mem_attrib
*attrib
,
77 struct target_ops
*target
);
79 static void remote_prepare_to_store (void);
81 static void remote_fetch_registers (int regno
);
83 static void remote_resume (ptid_t ptid
, int step
,
84 enum target_signal siggnal
);
85 static void remote_async_resume (ptid_t ptid
, int step
,
86 enum target_signal siggnal
);
87 static int remote_start_remote (struct ui_out
*uiout
, void *dummy
);
89 static void remote_open (char *name
, int from_tty
);
90 static void remote_async_open (char *name
, int from_tty
);
92 static void extended_remote_open (char *name
, int from_tty
);
93 static void extended_remote_async_open (char *name
, int from_tty
);
95 static void remote_open_1 (char *, int, struct target_ops
*, int extended_p
,
98 static void remote_close (int quitting
);
100 static void remote_store_registers (int regno
);
102 static void remote_mourn (void);
103 static void remote_async_mourn (void);
105 static void extended_remote_restart (void);
107 static void extended_remote_mourn (void);
109 static void extended_remote_create_inferior (char *, char *, char **);
110 static void extended_remote_async_create_inferior (char *, char *, char **);
112 static void remote_mourn_1 (struct target_ops
*);
114 static void remote_send (char *buf
, long sizeof_buf
);
116 static int readchar (int timeout
);
118 static ptid_t
remote_wait (ptid_t ptid
,
119 struct target_waitstatus
*status
);
120 static ptid_t
remote_async_wait (ptid_t ptid
,
121 struct target_waitstatus
*status
);
123 static void remote_kill (void);
124 static void remote_async_kill (void);
126 static int tohex (int nib
);
128 static void remote_detach (char *args
, int from_tty
);
130 static void remote_interrupt (int signo
);
132 static void remote_interrupt_twice (int signo
);
134 static void interrupt_query (void);
136 static void set_thread (int, int);
138 static int remote_thread_alive (ptid_t
);
140 static void get_offsets (void);
142 static long read_frame (char *buf
, long sizeof_buf
);
144 static int remote_insert_breakpoint (CORE_ADDR
, char *);
146 static int remote_remove_breakpoint (CORE_ADDR
, char *);
148 static int hexnumlen (ULONGEST num
);
150 static void init_remote_ops (void);
152 static void init_extended_remote_ops (void);
154 static void init_remote_cisco_ops (void);
156 static struct target_ops remote_cisco_ops
;
158 static void remote_stop (void);
160 static int ishex (int ch
, int *val
);
162 static int stubhex (int ch
);
164 static int remote_query (int /*char */ , char *, char *, int *);
166 static int hexnumstr (char *, ULONGEST
);
168 static int hexnumnstr (char *, ULONGEST
, int);
170 static CORE_ADDR
remote_address_masked (CORE_ADDR
);
172 static void print_packet (char *);
174 static unsigned long crc32 (unsigned char *, int, unsigned int);
176 static void compare_sections_command (char *, int);
178 static void packet_command (char *, int);
180 static int stub_unpack_int (char *buff
, int fieldlength
);
182 static ptid_t
remote_current_thread (ptid_t oldptid
);
184 static void remote_find_new_threads (void);
186 static void record_currthread (int currthread
);
188 static int fromhex (int a
);
190 static int hex2bin (const char *hex
, char *bin
, int count
);
192 static int bin2hex (const char *bin
, char *hex
, int count
);
194 static int putpkt_binary (char *buf
, int cnt
);
196 static void check_binary_download (CORE_ADDR addr
);
198 struct packet_config
;
200 static void show_packet_config_cmd (struct packet_config
*config
);
202 static void update_packet_config (struct packet_config
*config
);
204 void _initialize_remote (void);
206 /* Description of the remote protocol. Strictly speaking, when the
207 target is open()ed, remote.c should create a per-target description
208 of the remote protocol using that target's architecture.
209 Unfortunatly, the target stack doesn't include local state. For
210 the moment keep the information in the target's architecture
215 long offset
; /* Offset into G packet. */
216 long regnum
; /* GDB's internal register number. */
217 LONGEST pnum
; /* Remote protocol register number. */
218 int in_g_packet
; /* Always part of G packet. */
219 /* long size in bytes; == REGISTER_RAW_SIZE (regnum); at present. */
220 /* char *name; == REGISTER_NAME (regnum); at present. */
225 /* Description of the remote protocol registers. */
226 long sizeof_g_packet
;
228 /* Description of the remote protocol registers indexed by REGNUM
229 (making an array of NUM_REGS + NUM_PSEUDO_REGS in size). */
230 struct packet_reg
*regs
;
232 /* This is the size (in chars) of the first response to the ``g''
233 packet. It is used as a heuristic when determining the maximum
234 size of memory-read and memory-write packets. A target will
235 typically only reserve a buffer large enough to hold the ``g''
236 packet. The size does not include packet overhead (headers and
238 long actual_register_packet_size
;
240 /* This is the maximum size (in chars) of a non read/write packet.
241 It is also used as a cap on the size of read/write packets. */
242 long remote_packet_size
;
246 /* Handle for retreving the remote protocol data from gdbarch. */
247 static struct gdbarch_data
*remote_gdbarch_data_handle
;
249 static struct remote_state
*
250 get_remote_state (void)
252 return gdbarch_data (current_gdbarch
, remote_gdbarch_data_handle
);
256 init_remote_state (struct gdbarch
*gdbarch
)
259 struct remote_state
*rs
= GDBARCH_OBSTACK_ZALLOC (gdbarch
, struct remote_state
);
261 if (DEPRECATED_REGISTER_BYTES
!= 0)
262 rs
->sizeof_g_packet
= DEPRECATED_REGISTER_BYTES
;
264 rs
->sizeof_g_packet
= 0;
266 /* Assume a 1:1 regnum<->pnum table. */
267 rs
->regs
= GDBARCH_OBSTACK_CALLOC (gdbarch
, NUM_REGS
+ NUM_PSEUDO_REGS
,
269 for (regnum
= 0; regnum
< NUM_REGS
+ NUM_PSEUDO_REGS
; regnum
++)
271 struct packet_reg
*r
= &rs
->regs
[regnum
];
274 r
->offset
= DEPRECATED_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;
307 static struct packet_reg
*
308 packet_reg_from_regnum (struct remote_state
*rs
, long regnum
)
310 if (regnum
< 0 && regnum
>= NUM_REGS
+ NUM_PSEUDO_REGS
)
314 struct packet_reg
*r
= &rs
->regs
[regnum
];
315 gdb_assert (r
->regnum
== regnum
);
320 static struct packet_reg
*
321 packet_reg_from_pnum (struct remote_state
*rs
, LONGEST pnum
)
324 for (i
= 0; i
< NUM_REGS
+ NUM_PSEUDO_REGS
; i
++)
326 struct packet_reg
*r
= &rs
->regs
[i
];
333 /* FIXME: graces/2002-08-08: These variables should eventually be
334 bound to an instance of the target object (as in gdbarch-tdep()),
335 when such a thing exists. */
337 /* This is set to the data address of the access causing the target
338 to stop for a watchpoint. */
339 static CORE_ADDR remote_watch_data_address
;
341 /* This is non-zero if taregt stopped for a watchpoint. */
342 static int remote_stopped_by_watchpoint_p
;
345 static struct target_ops remote_ops
;
347 static struct target_ops extended_remote_ops
;
349 /* Temporary target ops. Just like the remote_ops and
350 extended_remote_ops, but with asynchronous support. */
351 static struct target_ops remote_async_ops
;
353 static struct target_ops extended_async_remote_ops
;
355 /* FIXME: cagney/1999-09-23: Even though getpkt was called with
356 ``forever'' still use the normal timeout mechanism. This is
357 currently used by the ASYNC code to guarentee that target reads
358 during the initial connect always time-out. Once getpkt has been
359 modified to return a timeout indication and, in turn
360 remote_wait()/wait_for_inferior() have gained a timeout parameter
362 static int wait_forever_enabled_p
= 1;
365 /* This variable chooses whether to send a ^C or a break when the user
366 requests program interruption. Although ^C is usually what remote
367 systems expect, and that is the default here, sometimes a break is
368 preferable instead. */
370 static int remote_break
;
372 /* Descriptor for I/O to remote machine. Initialize it to NULL so that
373 remote_open knows that we don't have a file open when the program
375 static struct serial
*remote_desc
= NULL
;
377 /* This is set by the target (thru the 'S' message)
378 to denote that the target is in kernel mode. */
379 static int cisco_kernel_mode
= 0;
381 /* This variable sets the number of bits in an address that are to be
382 sent in a memory ("M" or "m") packet. Normally, after stripping
383 leading zeros, the entire address would be sent. This variable
384 restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The
385 initial implementation of remote.c restricted the address sent in
386 memory packets to ``host::sizeof long'' bytes - (typically 32
387 bits). Consequently, for 64 bit targets, the upper 32 bits of an
388 address was never sent. Since fixing this bug may cause a break in
389 some remote targets this variable is principly provided to
390 facilitate backward compatibility. */
392 static int remote_address_size
;
394 /* Tempoary to track who currently owns the terminal. See
395 target_async_terminal_* for more details. */
397 static int remote_async_terminal_ours_p
;
400 /* User configurable variables for the number of characters in a
401 memory read/write packet. MIN ((rs->remote_packet_size),
402 rs->sizeof_g_packet) is the default. Some targets need smaller
403 values (fifo overruns, et.al.) and some users need larger values
404 (speed up transfers). The variables ``preferred_*'' (the user
405 request), ``current_*'' (what was actually set) and ``forced_*''
406 (Positive - a soft limit, negative - a hard limit). */
408 struct memory_packet_config
415 /* Compute the current size of a read/write packet. Since this makes
416 use of ``actual_register_packet_size'' the computation is dynamic. */
419 get_memory_packet_size (struct memory_packet_config
*config
)
421 struct remote_state
*rs
= get_remote_state ();
422 /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk
423 law?) that some hosts don't cope very well with large alloca()
424 calls. Eventually the alloca() code will be replaced by calls to
425 xmalloc() and make_cleanups() allowing this restriction to either
426 be lifted or removed. */
427 #ifndef MAX_REMOTE_PACKET_SIZE
428 #define MAX_REMOTE_PACKET_SIZE 16384
430 /* NOTE: 16 is just chosen at random. */
431 #ifndef MIN_REMOTE_PACKET_SIZE
432 #define MIN_REMOTE_PACKET_SIZE 16
437 if (config
->size
<= 0)
438 what_they_get
= MAX_REMOTE_PACKET_SIZE
;
440 what_they_get
= config
->size
;
444 what_they_get
= (rs
->remote_packet_size
);
445 /* Limit the packet to the size specified by the user. */
447 && what_they_get
> config
->size
)
448 what_they_get
= config
->size
;
449 /* Limit it to the size of the targets ``g'' response. */
450 if ((rs
->actual_register_packet_size
) > 0
451 && what_they_get
> (rs
->actual_register_packet_size
))
452 what_they_get
= (rs
->actual_register_packet_size
);
454 if (what_they_get
> MAX_REMOTE_PACKET_SIZE
)
455 what_they_get
= MAX_REMOTE_PACKET_SIZE
;
456 if (what_they_get
< MIN_REMOTE_PACKET_SIZE
)
457 what_they_get
= MIN_REMOTE_PACKET_SIZE
;
458 return what_they_get
;
461 /* Update the size of a read/write packet. If they user wants
462 something really big then do a sanity check. */
465 set_memory_packet_size (char *args
, struct memory_packet_config
*config
)
467 int fixed_p
= config
->fixed_p
;
468 long size
= config
->size
;
470 error ("Argument required (integer, `fixed' or `limited').");
471 else if (strcmp (args
, "hard") == 0
472 || strcmp (args
, "fixed") == 0)
474 else if (strcmp (args
, "soft") == 0
475 || strcmp (args
, "limit") == 0)
480 size
= strtoul (args
, &end
, 0);
482 error ("Invalid %s (bad syntax).", config
->name
);
484 /* Instead of explicitly capping the size of a packet to
485 MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is
486 instead allowed to set the size to something arbitrarily
488 if (size
> MAX_REMOTE_PACKET_SIZE
)
489 error ("Invalid %s (too large).", config
->name
);
493 if (fixed_p
&& !config
->fixed_p
)
495 if (! query ("The target may not be able to correctly handle a %s\n"
496 "of %ld bytes. Change the packet size? ",
498 error ("Packet size not changed.");
500 /* Update the config. */
501 config
->fixed_p
= fixed_p
;
506 show_memory_packet_size (struct memory_packet_config
*config
)
508 printf_filtered ("The %s is %ld. ", config
->name
, config
->size
);
510 printf_filtered ("Packets are fixed at %ld bytes.\n",
511 get_memory_packet_size (config
));
513 printf_filtered ("Packets are limited to %ld bytes.\n",
514 get_memory_packet_size (config
));
517 static struct memory_packet_config memory_write_packet_config
=
519 "memory-write-packet-size",
523 set_memory_write_packet_size (char *args
, int from_tty
)
525 set_memory_packet_size (args
, &memory_write_packet_config
);
529 show_memory_write_packet_size (char *args
, int from_tty
)
531 show_memory_packet_size (&memory_write_packet_config
);
535 get_memory_write_packet_size (void)
537 return get_memory_packet_size (&memory_write_packet_config
);
540 static struct memory_packet_config memory_read_packet_config
=
542 "memory-read-packet-size",
546 set_memory_read_packet_size (char *args
, int from_tty
)
548 set_memory_packet_size (args
, &memory_read_packet_config
);
552 show_memory_read_packet_size (char *args
, int from_tty
)
554 show_memory_packet_size (&memory_read_packet_config
);
558 get_memory_read_packet_size (void)
560 struct remote_state
*rs
= get_remote_state ();
561 long size
= get_memory_packet_size (&memory_read_packet_config
);
562 /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an
563 extra buffer size argument before the memory read size can be
564 increased beyond (rs->remote_packet_size). */
565 if (size
> (rs
->remote_packet_size
))
566 size
= (rs
->remote_packet_size
);
571 /* Generic configuration support for packets the stub optionally
572 supports. Allows the user to specify the use of the packet as well
573 as allowing GDB to auto-detect support in the remote stub. */
577 PACKET_SUPPORT_UNKNOWN
= 0,
586 enum auto_boolean detect
;
587 enum packet_support support
;
590 /* Analyze a packet's return value and update the packet config
601 update_packet_config (struct packet_config
*config
)
603 switch (config
->detect
)
605 case AUTO_BOOLEAN_TRUE
:
606 config
->support
= PACKET_ENABLE
;
608 case AUTO_BOOLEAN_FALSE
:
609 config
->support
= PACKET_DISABLE
;
611 case AUTO_BOOLEAN_AUTO
:
612 config
->support
= PACKET_SUPPORT_UNKNOWN
;
618 show_packet_config_cmd (struct packet_config
*config
)
620 char *support
= "internal-error";
621 switch (config
->support
)
627 support
= "disabled";
629 case PACKET_SUPPORT_UNKNOWN
:
633 switch (config
->detect
)
635 case AUTO_BOOLEAN_AUTO
:
636 printf_filtered ("Support for remote protocol `%s' (%s) packet is auto-detected, currently %s.\n",
637 config
->name
, config
->title
, support
);
639 case AUTO_BOOLEAN_TRUE
:
640 case AUTO_BOOLEAN_FALSE
:
641 printf_filtered ("Support for remote protocol `%s' (%s) packet is currently %s.\n",
642 config
->name
, config
->title
, support
);
648 add_packet_config_cmd (struct packet_config
*config
,
651 cmd_sfunc_ftype
*set_func
,
652 cmd_sfunc_ftype
*show_func
,
653 struct cmd_list_element
**set_remote_list
,
654 struct cmd_list_element
**show_remote_list
,
657 struct cmd_list_element
*set_cmd
;
658 struct cmd_list_element
*show_cmd
;
663 config
->title
= title
;
664 config
->detect
= AUTO_BOOLEAN_AUTO
;
665 config
->support
= PACKET_SUPPORT_UNKNOWN
;
666 xasprintf (&set_doc
, "Set use of remote protocol `%s' (%s) packet",
668 xasprintf (&show_doc
, "Show current use of remote protocol `%s' (%s) packet",
670 /* set/show TITLE-packet {auto,on,off} */
671 xasprintf (&cmd_name
, "%s-packet", title
);
672 add_setshow_auto_boolean_cmd (cmd_name
, class_obscure
,
673 &config
->detect
, set_doc
, show_doc
,
675 set_remote_list
, show_remote_list
);
676 /* set/show remote NAME-packet {auto,on,off} -- legacy */
680 xasprintf (&legacy_name
, "%s-packet", name
);
681 add_alias_cmd (legacy_name
, cmd_name
, class_obscure
, 0,
683 add_alias_cmd (legacy_name
, cmd_name
, class_obscure
, 0,
688 static enum packet_result
689 packet_ok (const char *buf
, struct packet_config
*config
)
693 /* The stub recognized the packet request. Check that the
694 operation succeeded. */
695 switch (config
->support
)
697 case PACKET_SUPPORT_UNKNOWN
:
699 fprintf_unfiltered (gdb_stdlog
,
700 "Packet %s (%s) is supported\n",
701 config
->name
, config
->title
);
702 config
->support
= PACKET_ENABLE
;
705 internal_error (__FILE__
, __LINE__
,
706 "packet_ok: attempt to use a disabled packet");
711 if (buf
[0] == 'O' && buf
[1] == 'K' && buf
[2] == '\0')
712 /* "OK" - definitly OK. */
715 && isxdigit (buf
[1]) && isxdigit (buf
[2])
717 /* "Enn" - definitly an error. */
719 /* The packet may or may not be OK. Just assume it is */
724 /* The stub does not support the packet. */
725 switch (config
->support
)
728 if (config
->detect
== AUTO_BOOLEAN_AUTO
)
729 /* If the stub previously indicated that the packet was
730 supported then there is a protocol error.. */
731 error ("Protocol error: %s (%s) conflicting enabled responses.",
732 config
->name
, config
->title
);
734 /* The user set it wrong. */
735 error ("Enabled packet %s (%s) not recognized by stub",
736 config
->name
, config
->title
);
738 case PACKET_SUPPORT_UNKNOWN
:
740 fprintf_unfiltered (gdb_stdlog
,
741 "Packet %s (%s) is NOT supported\n",
742 config
->name
, config
->title
);
743 config
->support
= PACKET_DISABLE
;
748 return PACKET_UNKNOWN
;
752 /* Should we try the 'qSymbol' (target symbol lookup service) request? */
753 static struct packet_config remote_protocol_qSymbol
;
756 set_remote_protocol_qSymbol_packet_cmd (char *args
, int from_tty
,
757 struct cmd_list_element
*c
)
759 update_packet_config (&remote_protocol_qSymbol
);
763 show_remote_protocol_qSymbol_packet_cmd (char *args
, int from_tty
,
764 struct cmd_list_element
*c
)
766 show_packet_config_cmd (&remote_protocol_qSymbol
);
769 /* Should we try the 'e' (step over range) request? */
770 static struct packet_config remote_protocol_e
;
773 set_remote_protocol_e_packet_cmd (char *args
, int from_tty
,
774 struct cmd_list_element
*c
)
776 update_packet_config (&remote_protocol_e
);
780 show_remote_protocol_e_packet_cmd (char *args
, int from_tty
,
781 struct cmd_list_element
*c
)
783 show_packet_config_cmd (&remote_protocol_e
);
787 /* Should we try the 'E' (step over range / w signal #) request? */
788 static struct packet_config remote_protocol_E
;
791 set_remote_protocol_E_packet_cmd (char *args
, int from_tty
,
792 struct cmd_list_element
*c
)
794 update_packet_config (&remote_protocol_E
);
798 show_remote_protocol_E_packet_cmd (char *args
, int from_tty
,
799 struct cmd_list_element
*c
)
801 show_packet_config_cmd (&remote_protocol_E
);
805 /* Should we try the 'P' (set register) request? */
807 static struct packet_config remote_protocol_P
;
810 set_remote_protocol_P_packet_cmd (char *args
, int from_tty
,
811 struct cmd_list_element
*c
)
813 update_packet_config (&remote_protocol_P
);
817 show_remote_protocol_P_packet_cmd (char *args
, int from_tty
,
818 struct cmd_list_element
*c
)
820 show_packet_config_cmd (&remote_protocol_P
);
823 /* Should we try one of the 'Z' requests? */
827 Z_PACKET_SOFTWARE_BP
,
828 Z_PACKET_HARDWARE_BP
,
835 static struct packet_config remote_protocol_Z
[NR_Z_PACKET_TYPES
];
837 /* FIXME: Instead of having all these boiler plate functions, the
838 command callback should include a context argument. */
841 set_remote_protocol_Z_software_bp_packet_cmd (char *args
, int from_tty
,
842 struct cmd_list_element
*c
)
844 update_packet_config (&remote_protocol_Z
[Z_PACKET_SOFTWARE_BP
]);
848 show_remote_protocol_Z_software_bp_packet_cmd (char *args
, int from_tty
,
849 struct cmd_list_element
*c
)
851 show_packet_config_cmd (&remote_protocol_Z
[Z_PACKET_SOFTWARE_BP
]);
855 set_remote_protocol_Z_hardware_bp_packet_cmd (char *args
, int from_tty
,
856 struct cmd_list_element
*c
)
858 update_packet_config (&remote_protocol_Z
[Z_PACKET_HARDWARE_BP
]);
862 show_remote_protocol_Z_hardware_bp_packet_cmd (char *args
, int from_tty
,
863 struct cmd_list_element
*c
)
865 show_packet_config_cmd (&remote_protocol_Z
[Z_PACKET_HARDWARE_BP
]);
869 set_remote_protocol_Z_write_wp_packet_cmd (char *args
, int from_tty
,
870 struct cmd_list_element
*c
)
872 update_packet_config (&remote_protocol_Z
[Z_PACKET_WRITE_WP
]);
876 show_remote_protocol_Z_write_wp_packet_cmd (char *args
, int from_tty
,
877 struct cmd_list_element
*c
)
879 show_packet_config_cmd (&remote_protocol_Z
[Z_PACKET_WRITE_WP
]);
883 set_remote_protocol_Z_read_wp_packet_cmd (char *args
, int from_tty
,
884 struct cmd_list_element
*c
)
886 update_packet_config (&remote_protocol_Z
[Z_PACKET_READ_WP
]);
890 show_remote_protocol_Z_read_wp_packet_cmd (char *args
, int from_tty
,
891 struct cmd_list_element
*c
)
893 show_packet_config_cmd (&remote_protocol_Z
[Z_PACKET_READ_WP
]);
897 set_remote_protocol_Z_access_wp_packet_cmd (char *args
, int from_tty
,
898 struct cmd_list_element
*c
)
900 update_packet_config (&remote_protocol_Z
[Z_PACKET_ACCESS_WP
]);
904 show_remote_protocol_Z_access_wp_packet_cmd (char *args
, int from_tty
,
905 struct cmd_list_element
*c
)
907 show_packet_config_cmd (&remote_protocol_Z
[Z_PACKET_ACCESS_WP
]);
910 /* For compatibility with older distributions. Provide a ``set remote
911 Z-packet ...'' command that updates all the Z packet types. */
913 static enum auto_boolean remote_Z_packet_detect
;
916 set_remote_protocol_Z_packet_cmd (char *args
, int from_tty
,
917 struct cmd_list_element
*c
)
920 for (i
= 0; i
< NR_Z_PACKET_TYPES
; i
++)
922 remote_protocol_Z
[i
].detect
= remote_Z_packet_detect
;
923 update_packet_config (&remote_protocol_Z
[i
]);
928 show_remote_protocol_Z_packet_cmd (char *args
, int from_tty
,
929 struct cmd_list_element
*c
)
932 for (i
= 0; i
< NR_Z_PACKET_TYPES
; i
++)
934 show_packet_config_cmd (&remote_protocol_Z
[i
]);
938 /* Should we try the 'X' (remote binary download) packet?
940 This variable (available to the user via "set remote X-packet")
941 dictates whether downloads are sent in binary (via the 'X' packet).
942 We assume that the stub can, and attempt to do it. This will be
943 cleared if the stub does not understand it. This switch is still
944 needed, though in cases when the packet is supported in the stub,
945 but the connection does not allow it (i.e., 7-bit serial connection
948 static struct packet_config remote_protocol_binary_download
;
950 /* Should we try the 'ThreadInfo' query packet?
952 This variable (NOT available to the user: auto-detect only!)
953 determines whether GDB will use the new, simpler "ThreadInfo"
954 query or the older, more complex syntax for thread queries.
955 This is an auto-detect variable (set to true at each connect,
956 and set to false when the target fails to recognize it). */
958 static int use_threadinfo_query
;
959 static int use_threadextra_query
;
962 set_remote_protocol_binary_download_cmd (char *args
,
964 struct cmd_list_element
*c
)
966 update_packet_config (&remote_protocol_binary_download
);
970 show_remote_protocol_binary_download_cmd (char *args
, int from_tty
,
971 struct cmd_list_element
*c
)
973 show_packet_config_cmd (&remote_protocol_binary_download
);
977 /* Tokens for use by the asynchronous signal handlers for SIGINT */
978 static void *sigint_remote_twice_token
;
979 static void *sigint_remote_token
;
981 /* These are pointers to hook functions that may be set in order to
982 modify resume/wait behavior for a particular architecture. */
984 void (*target_resume_hook
) (void);
985 void (*target_wait_loop_hook
) (void);
989 /* These are the threads which we last sent to the remote system.
990 -1 for all or -2 for not sent yet. */
991 static int general_thread
;
992 static int continue_thread
;
994 /* Call this function as a result of
995 1) A halt indication (T packet) containing a thread id
996 2) A direct query of currthread
997 3) Successful execution of set thread
1001 record_currthread (int currthread
)
1003 general_thread
= currthread
;
1005 /* If this is a new thread, add it to GDB's thread list.
1006 If we leave it up to WFI to do this, bad things will happen. */
1007 if (!in_thread_list (pid_to_ptid (currthread
)))
1009 add_thread (pid_to_ptid (currthread
));
1010 ui_out_text (uiout
, "[New ");
1011 ui_out_text (uiout
, target_pid_to_str (pid_to_ptid (currthread
)));
1012 ui_out_text (uiout
, "]\n");
1016 #define MAGIC_NULL_PID 42000
1019 set_thread (int th
, int gen
)
1021 struct remote_state
*rs
= get_remote_state ();
1022 char *buf
= alloca (rs
->remote_packet_size
);
1023 int state
= gen
? general_thread
: continue_thread
;
1029 buf
[1] = gen
? 'g' : 'c';
1030 if (th
== MAGIC_NULL_PID
)
1036 sprintf (&buf
[2], "-%x", -th
);
1038 sprintf (&buf
[2], "%x", th
);
1040 getpkt (buf
, (rs
->remote_packet_size
), 0);
1042 general_thread
= th
;
1044 continue_thread
= th
;
1047 /* Return nonzero if the thread TH is still alive on the remote system. */
1050 remote_thread_alive (ptid_t ptid
)
1052 int tid
= PIDGET (ptid
);
1056 sprintf (buf
, "T-%08x", -tid
);
1058 sprintf (buf
, "T%08x", tid
);
1060 getpkt (buf
, sizeof (buf
), 0);
1061 return (buf
[0] == 'O' && buf
[1] == 'K');
1064 /* About these extended threadlist and threadinfo packets. They are
1065 variable length packets but, the fields within them are often fixed
1066 length. They are redundent enough to send over UDP as is the
1067 remote protocol in general. There is a matching unit test module
1070 #define OPAQUETHREADBYTES 8
1072 /* a 64 bit opaque identifier */
1073 typedef unsigned char threadref
[OPAQUETHREADBYTES
];
1075 /* WARNING: This threadref data structure comes from the remote O.S., libstub
1076 protocol encoding, and remote.c. it is not particularly changable */
1078 /* Right now, the internal structure is int. We want it to be bigger.
1082 typedef int gdb_threadref
; /* internal GDB thread reference */
1084 /* gdb_ext_thread_info is an internal GDB data structure which is
1085 equivalint to the reply of the remote threadinfo packet */
1087 struct gdb_ext_thread_info
1089 threadref threadid
; /* External form of thread reference */
1090 int active
; /* Has state interesting to GDB? , regs, stack */
1091 char display
[256]; /* Brief state display, name, blocked/syspended */
1092 char shortname
[32]; /* To be used to name threads */
1093 char more_display
[256]; /* Long info, statistics, queue depth, whatever */
1096 /* The volume of remote transfers can be limited by submitting
1097 a mask containing bits specifying the desired information.
1098 Use a union of these values as the 'selection' parameter to
1099 get_thread_info. FIXME: Make these TAG names more thread specific.
1102 #define TAG_THREADID 1
1103 #define TAG_EXISTS 2
1104 #define TAG_DISPLAY 4
1105 #define TAG_THREADNAME 8
1106 #define TAG_MOREDISPLAY 16
1108 #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES*2)
1110 char *unpack_varlen_hex (char *buff
, ULONGEST
*result
);
1112 static char *unpack_nibble (char *buf
, int *val
);
1114 static char *pack_nibble (char *buf
, int nibble
);
1116 static char *pack_hex_byte (char *pkt
, int /*unsigned char */ byte
);
1118 static char *unpack_byte (char *buf
, int *value
);
1120 static char *pack_int (char *buf
, int value
);
1122 static char *unpack_int (char *buf
, int *value
);
1124 static char *unpack_string (char *src
, char *dest
, int length
);
1126 static char *pack_threadid (char *pkt
, threadref
* id
);
1128 static char *unpack_threadid (char *inbuf
, threadref
* id
);
1130 void int_to_threadref (threadref
* id
, int value
);
1132 static int threadref_to_int (threadref
* ref
);
1134 static void copy_threadref (threadref
* dest
, threadref
* src
);
1136 static int threadmatch (threadref
* dest
, threadref
* src
);
1138 static char *pack_threadinfo_request (char *pkt
, int mode
, threadref
* id
);
1140 static int remote_unpack_thread_info_response (char *pkt
,
1141 threadref
* expectedref
,
1142 struct gdb_ext_thread_info
1146 static int remote_get_threadinfo (threadref
* threadid
, int fieldset
, /*TAG mask */
1147 struct gdb_ext_thread_info
*info
);
1149 static int adapt_remote_get_threadinfo (gdb_threadref
* ref
,
1151 struct gdb_ext_thread_info
*info
);
1153 static char *pack_threadlist_request (char *pkt
, int startflag
,
1155 threadref
* nextthread
);
1157 static int parse_threadlist_response (char *pkt
,
1159 threadref
* original_echo
,
1160 threadref
* resultlist
, int *doneflag
);
1162 static int remote_get_threadlist (int startflag
,
1163 threadref
* nextthread
,
1166 int *result_count
, threadref
* threadlist
);
1168 typedef int (*rmt_thread_action
) (threadref
* ref
, void *context
);
1170 static int remote_threadlist_iterator (rmt_thread_action stepfunction
,
1171 void *context
, int looplimit
);
1173 static int remote_newthread_step (threadref
* ref
, void *context
);
1175 /* encode 64 bits in 16 chars of hex */
1177 static const char hexchars
[] = "0123456789abcdef";
1180 ishex (int ch
, int *val
)
1182 if ((ch
>= 'a') && (ch
<= 'f'))
1184 *val
= ch
- 'a' + 10;
1187 if ((ch
>= 'A') && (ch
<= 'F'))
1189 *val
= ch
- 'A' + 10;
1192 if ((ch
>= '0') && (ch
<= '9'))
1203 if (ch
>= 'a' && ch
<= 'f')
1204 return ch
- 'a' + 10;
1205 if (ch
>= '0' && ch
<= '9')
1207 if (ch
>= 'A' && ch
<= 'F')
1208 return ch
- 'A' + 10;
1213 stub_unpack_int (char *buff
, int fieldlength
)
1220 nibble
= stubhex (*buff
++);
1224 retval
= retval
<< 4;
1230 unpack_varlen_hex (char *buff
, /* packet to parse */
1236 while (ishex (*buff
, &nibble
))
1239 retval
= retval
<< 4;
1240 retval
|= nibble
& 0x0f;
1247 unpack_nibble (char *buf
, int *val
)
1249 ishex (*buf
++, val
);
1254 pack_nibble (char *buf
, int nibble
)
1256 *buf
++ = hexchars
[(nibble
& 0x0f)];
1261 pack_hex_byte (char *pkt
, int byte
)
1263 *pkt
++ = hexchars
[(byte
>> 4) & 0xf];
1264 *pkt
++ = hexchars
[(byte
& 0xf)];
1269 unpack_byte (char *buf
, int *value
)
1271 *value
= stub_unpack_int (buf
, 2);
1276 pack_int (char *buf
, int value
)
1278 buf
= pack_hex_byte (buf
, (value
>> 24) & 0xff);
1279 buf
= pack_hex_byte (buf
, (value
>> 16) & 0xff);
1280 buf
= pack_hex_byte (buf
, (value
>> 8) & 0x0ff);
1281 buf
= pack_hex_byte (buf
, (value
& 0xff));
1286 unpack_int (char *buf
, int *value
)
1288 *value
= stub_unpack_int (buf
, 8);
1292 #if 0 /* currently unused, uncomment when needed */
1293 static char *pack_string (char *pkt
, char *string
);
1296 pack_string (char *pkt
, char *string
)
1301 len
= strlen (string
);
1303 len
= 200; /* Bigger than most GDB packets, junk??? */
1304 pkt
= pack_hex_byte (pkt
, len
);
1308 if ((ch
== '\0') || (ch
== '#'))
1309 ch
= '*'; /* Protect encapsulation */
1314 #endif /* 0 (unused) */
1317 unpack_string (char *src
, char *dest
, int length
)
1326 pack_threadid (char *pkt
, threadref
*id
)
1329 unsigned char *altid
;
1331 altid
= (unsigned char *) id
;
1332 limit
= pkt
+ BUF_THREAD_ID_SIZE
;
1334 pkt
= pack_hex_byte (pkt
, *altid
++);
1340 unpack_threadid (char *inbuf
, threadref
*id
)
1343 char *limit
= inbuf
+ BUF_THREAD_ID_SIZE
;
1346 altref
= (char *) id
;
1348 while (inbuf
< limit
)
1350 x
= stubhex (*inbuf
++);
1351 y
= stubhex (*inbuf
++);
1352 *altref
++ = (x
<< 4) | y
;
1357 /* Externally, threadrefs are 64 bits but internally, they are still
1358 ints. This is due to a mismatch of specifications. We would like
1359 to use 64bit thread references internally. This is an adapter
1363 int_to_threadref (threadref
*id
, int value
)
1365 unsigned char *scan
;
1367 scan
= (unsigned char *) id
;
1373 *scan
++ = (value
>> 24) & 0xff;
1374 *scan
++ = (value
>> 16) & 0xff;
1375 *scan
++ = (value
>> 8) & 0xff;
1376 *scan
++ = (value
& 0xff);
1380 threadref_to_int (threadref
*ref
)
1383 unsigned char *scan
;
1385 scan
= (char *) ref
;
1389 value
= (value
<< 8) | ((*scan
++) & 0xff);
1394 copy_threadref (threadref
*dest
, threadref
*src
)
1397 unsigned char *csrc
, *cdest
;
1399 csrc
= (unsigned char *) src
;
1400 cdest
= (unsigned char *) dest
;
1407 threadmatch (threadref
*dest
, threadref
*src
)
1409 /* things are broken right now, so just assume we got a match */
1411 unsigned char *srcp
, *destp
;
1413 srcp
= (char *) src
;
1414 destp
= (char *) dest
;
1418 result
&= (*srcp
++ == *destp
++) ? 1 : 0;
1425 threadid:1, # always request threadid
1432 /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */
1435 pack_threadinfo_request (char *pkt
, int mode
, threadref
*id
)
1437 *pkt
++ = 'q'; /* Info Query */
1438 *pkt
++ = 'P'; /* process or thread info */
1439 pkt
= pack_int (pkt
, mode
); /* mode */
1440 pkt
= pack_threadid (pkt
, id
); /* threadid */
1441 *pkt
= '\0'; /* terminate */
1445 /* These values tag the fields in a thread info response packet */
1446 /* Tagging the fields allows us to request specific fields and to
1447 add more fields as time goes by */
1449 #define TAG_THREADID 1 /* Echo the thread identifier */
1450 #define TAG_EXISTS 2 /* Is this process defined enough to
1451 fetch registers and its stack */
1452 #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */
1453 #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is */
1454 #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about
1458 remote_unpack_thread_info_response (char *pkt
, threadref
*expectedref
,
1459 struct gdb_ext_thread_info
*info
)
1461 struct remote_state
*rs
= get_remote_state ();
1465 char *limit
= pkt
+ (rs
->remote_packet_size
); /* plausable parsing limit */
1468 /* info->threadid = 0; FIXME: implement zero_threadref */
1470 info
->display
[0] = '\0';
1471 info
->shortname
[0] = '\0';
1472 info
->more_display
[0] = '\0';
1474 /* Assume the characters indicating the packet type have been stripped */
1475 pkt
= unpack_int (pkt
, &mask
); /* arg mask */
1476 pkt
= unpack_threadid (pkt
, &ref
);
1479 warning ("Incomplete response to threadinfo request\n");
1480 if (!threadmatch (&ref
, expectedref
))
1481 { /* This is an answer to a different request */
1482 warning ("ERROR RMT Thread info mismatch\n");
1485 copy_threadref (&info
->threadid
, &ref
);
1487 /* Loop on tagged fields , try to bail if somthing goes wrong */
1489 while ((pkt
< limit
) && mask
&& *pkt
) /* packets are terminated with nulls */
1491 pkt
= unpack_int (pkt
, &tag
); /* tag */
1492 pkt
= unpack_byte (pkt
, &length
); /* length */
1493 if (!(tag
& mask
)) /* tags out of synch with mask */
1495 warning ("ERROR RMT: threadinfo tag mismatch\n");
1499 if (tag
== TAG_THREADID
)
1503 warning ("ERROR RMT: length of threadid is not 16\n");
1507 pkt
= unpack_threadid (pkt
, &ref
);
1508 mask
= mask
& ~TAG_THREADID
;
1511 if (tag
== TAG_EXISTS
)
1513 info
->active
= stub_unpack_int (pkt
, length
);
1515 mask
= mask
& ~(TAG_EXISTS
);
1518 warning ("ERROR RMT: 'exists' length too long\n");
1524 if (tag
== TAG_THREADNAME
)
1526 pkt
= unpack_string (pkt
, &info
->shortname
[0], length
);
1527 mask
= mask
& ~TAG_THREADNAME
;
1530 if (tag
== TAG_DISPLAY
)
1532 pkt
= unpack_string (pkt
, &info
->display
[0], length
);
1533 mask
= mask
& ~TAG_DISPLAY
;
1536 if (tag
== TAG_MOREDISPLAY
)
1538 pkt
= unpack_string (pkt
, &info
->more_display
[0], length
);
1539 mask
= mask
& ~TAG_MOREDISPLAY
;
1542 warning ("ERROR RMT: unknown thread info tag\n");
1543 break; /* Not a tag we know about */
1549 remote_get_threadinfo (threadref
*threadid
, int fieldset
, /* TAG mask */
1550 struct gdb_ext_thread_info
*info
)
1552 struct remote_state
*rs
= get_remote_state ();
1554 char *threadinfo_pkt
= alloca (rs
->remote_packet_size
);
1556 pack_threadinfo_request (threadinfo_pkt
, fieldset
, threadid
);
1557 putpkt (threadinfo_pkt
);
1558 getpkt (threadinfo_pkt
, (rs
->remote_packet_size
), 0);
1559 result
= remote_unpack_thread_info_response (threadinfo_pkt
+ 2, threadid
,
1564 /* Unfortunately, 61 bit thread-ids are bigger than the internal
1565 representation of a threadid. */
1568 adapt_remote_get_threadinfo (gdb_threadref
*ref
, int selection
,
1569 struct gdb_ext_thread_info
*info
)
1573 int_to_threadref (&lclref
, *ref
);
1574 return remote_get_threadinfo (&lclref
, selection
, info
);
1577 /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */
1580 pack_threadlist_request (char *pkt
, int startflag
, int threadcount
,
1581 threadref
*nextthread
)
1583 *pkt
++ = 'q'; /* info query packet */
1584 *pkt
++ = 'L'; /* Process LIST or threadLIST request */
1585 pkt
= pack_nibble (pkt
, startflag
); /* initflag 1 bytes */
1586 pkt
= pack_hex_byte (pkt
, threadcount
); /* threadcount 2 bytes */
1587 pkt
= pack_threadid (pkt
, nextthread
); /* 64 bit thread identifier */
1592 /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */
1595 parse_threadlist_response (char *pkt
, int result_limit
,
1596 threadref
*original_echo
, threadref
*resultlist
,
1599 struct remote_state
*rs
= get_remote_state ();
1601 int count
, resultcount
, done
;
1604 /* Assume the 'q' and 'M chars have been stripped. */
1605 limit
= pkt
+ ((rs
->remote_packet_size
) - BUF_THREAD_ID_SIZE
); /* done parse past here */
1606 pkt
= unpack_byte (pkt
, &count
); /* count field */
1607 pkt
= unpack_nibble (pkt
, &done
);
1608 /* The first threadid is the argument threadid. */
1609 pkt
= unpack_threadid (pkt
, original_echo
); /* should match query packet */
1610 while ((count
-- > 0) && (pkt
< limit
))
1612 pkt
= unpack_threadid (pkt
, resultlist
++);
1613 if (resultcount
++ >= result_limit
)
1622 remote_get_threadlist (int startflag
, threadref
*nextthread
, int result_limit
,
1623 int *done
, int *result_count
, threadref
*threadlist
)
1625 struct remote_state
*rs
= get_remote_state ();
1626 static threadref echo_nextthread
;
1627 char *threadlist_packet
= alloca (rs
->remote_packet_size
);
1628 char *t_response
= alloca (rs
->remote_packet_size
);
1631 /* Trancate result limit to be smaller than the packet size */
1632 if ((((result_limit
+ 1) * BUF_THREAD_ID_SIZE
) + 10) >= (rs
->remote_packet_size
))
1633 result_limit
= ((rs
->remote_packet_size
) / BUF_THREAD_ID_SIZE
) - 2;
1635 pack_threadlist_request (threadlist_packet
,
1636 startflag
, result_limit
, nextthread
);
1637 putpkt (threadlist_packet
);
1638 getpkt (t_response
, (rs
->remote_packet_size
), 0);
1641 parse_threadlist_response (t_response
+ 2, result_limit
, &echo_nextthread
,
1644 if (!threadmatch (&echo_nextthread
, nextthread
))
1646 /* FIXME: This is a good reason to drop the packet */
1647 /* Possably, there is a duplicate response */
1649 retransmit immediatly - race conditions
1650 retransmit after timeout - yes
1652 wait for packet, then exit
1654 warning ("HMM: threadlist did not echo arg thread, dropping it\n");
1655 return 0; /* I choose simply exiting */
1657 if (*result_count
<= 0)
1661 warning ("RMT ERROR : failed to get remote thread list\n");
1664 return result
; /* break; */
1666 if (*result_count
> result_limit
)
1669 warning ("RMT ERROR: threadlist response longer than requested\n");
1675 /* This is the interface between remote and threads, remotes upper interface */
1677 /* remote_find_new_threads retrieves the thread list and for each
1678 thread in the list, looks up the thread in GDB's internal list,
1679 ading the thread if it does not already exist. This involves
1680 getting partial thread lists from the remote target so, polling the
1681 quit_flag is required. */
1684 /* About this many threadisds fit in a packet. */
1686 #define MAXTHREADLISTRESULTS 32
1689 remote_threadlist_iterator (rmt_thread_action stepfunction
, void *context
,
1692 int done
, i
, result_count
;
1696 static threadref nextthread
;
1697 static threadref resultthreadlist
[MAXTHREADLISTRESULTS
];
1702 if (loopcount
++ > looplimit
)
1705 warning ("Remote fetch threadlist -infinite loop-\n");
1708 if (!remote_get_threadlist (startflag
, &nextthread
, MAXTHREADLISTRESULTS
,
1709 &done
, &result_count
, resultthreadlist
))
1714 /* clear for later iterations */
1716 /* Setup to resume next batch of thread references, set nextthread. */
1717 if (result_count
>= 1)
1718 copy_threadref (&nextthread
, &resultthreadlist
[result_count
- 1]);
1720 while (result_count
--)
1721 if (!(result
= (*stepfunction
) (&resultthreadlist
[i
++], context
)))
1728 remote_newthread_step (threadref
*ref
, void *context
)
1732 ptid
= pid_to_ptid (threadref_to_int (ref
));
1734 if (!in_thread_list (ptid
))
1736 return 1; /* continue iterator */
1739 #define CRAZY_MAX_THREADS 1000
1742 remote_current_thread (ptid_t oldpid
)
1744 struct remote_state
*rs
= get_remote_state ();
1745 char *buf
= alloca (rs
->remote_packet_size
);
1748 getpkt (buf
, (rs
->remote_packet_size
), 0);
1749 if (buf
[0] == 'Q' && buf
[1] == 'C')
1750 return pid_to_ptid (strtol (&buf
[2], NULL
, 16));
1755 /* Find new threads for info threads command.
1756 * Original version, using John Metzler's thread protocol.
1760 remote_find_new_threads (void)
1762 remote_threadlist_iterator (remote_newthread_step
, 0,
1764 if (PIDGET (inferior_ptid
) == MAGIC_NULL_PID
) /* ack ack ack */
1765 inferior_ptid
= remote_current_thread (inferior_ptid
);
1769 * Find all threads for info threads command.
1770 * Uses new thread protocol contributed by Cisco.
1771 * Falls back and attempts to use the older method (above)
1772 * if the target doesn't respond to the new method.
1776 remote_threads_info (void)
1778 struct remote_state
*rs
= get_remote_state ();
1779 char *buf
= alloca (rs
->remote_packet_size
);
1783 if (remote_desc
== 0) /* paranoia */
1784 error ("Command can only be used when connected to the remote target.");
1786 if (use_threadinfo_query
)
1788 putpkt ("qfThreadInfo");
1790 getpkt (bufp
, (rs
->remote_packet_size
), 0);
1791 if (bufp
[0] != '\0') /* q packet recognized */
1793 while (*bufp
++ == 'm') /* reply contains one or more TID */
1797 tid
= strtol (bufp
, &bufp
, 16);
1798 if (tid
!= 0 && !in_thread_list (pid_to_ptid (tid
)))
1799 add_thread (pid_to_ptid (tid
));
1801 while (*bufp
++ == ','); /* comma-separated list */
1802 putpkt ("qsThreadInfo");
1804 getpkt (bufp
, (rs
->remote_packet_size
), 0);
1810 /* Else fall back to old method based on jmetzler protocol. */
1811 use_threadinfo_query
= 0;
1812 remote_find_new_threads ();
1817 * Collect a descriptive string about the given thread.
1818 * The target may say anything it wants to about the thread
1819 * (typically info about its blocked / runnable state, name, etc.).
1820 * This string will appear in the info threads display.
1822 * Optional: targets are not required to implement this function.
1826 remote_threads_extra_info (struct thread_info
*tp
)
1828 struct remote_state
*rs
= get_remote_state ();
1832 struct gdb_ext_thread_info threadinfo
;
1833 static char display_buf
[100]; /* arbitrary... */
1834 char *bufp
= alloca (rs
->remote_packet_size
);
1835 int n
= 0; /* position in display_buf */
1837 if (remote_desc
== 0) /* paranoia */
1838 internal_error (__FILE__
, __LINE__
,
1839 "remote_threads_extra_info");
1841 if (use_threadextra_query
)
1843 sprintf (bufp
, "qThreadExtraInfo,%x", PIDGET (tp
->ptid
));
1845 getpkt (bufp
, (rs
->remote_packet_size
), 0);
1848 n
= min (strlen (bufp
) / 2, sizeof (display_buf
));
1849 result
= hex2bin (bufp
, display_buf
, n
);
1850 display_buf
[result
] = '\0';
1855 /* If the above query fails, fall back to the old method. */
1856 use_threadextra_query
= 0;
1857 set
= TAG_THREADID
| TAG_EXISTS
| TAG_THREADNAME
1858 | TAG_MOREDISPLAY
| TAG_DISPLAY
;
1859 int_to_threadref (&id
, PIDGET (tp
->ptid
));
1860 if (remote_get_threadinfo (&id
, set
, &threadinfo
))
1861 if (threadinfo
.active
)
1863 if (*threadinfo
.shortname
)
1864 n
+= sprintf(&display_buf
[0], " Name: %s,", threadinfo
.shortname
);
1865 if (*threadinfo
.display
)
1866 n
+= sprintf(&display_buf
[n
], " State: %s,", threadinfo
.display
);
1867 if (*threadinfo
.more_display
)
1868 n
+= sprintf(&display_buf
[n
], " Priority: %s",
1869 threadinfo
.more_display
);
1873 /* for purely cosmetic reasons, clear up trailing commas */
1874 if (',' == display_buf
[n
-1])
1875 display_buf
[n
-1] = ' ';
1884 /* Restart the remote side; this is an extended protocol operation. */
1887 extended_remote_restart (void)
1889 struct remote_state
*rs
= get_remote_state ();
1890 char *buf
= alloca (rs
->remote_packet_size
);
1892 /* Send the restart command; for reasons I don't understand the
1893 remote side really expects a number after the "R". */
1895 sprintf (&buf
[1], "%x", 0);
1898 /* Now query for status so this looks just like we restarted
1899 gdbserver from scratch. */
1901 getpkt (buf
, (rs
->remote_packet_size
), 0);
1904 /* Clean up connection to a remote debugger. */
1908 remote_close (int quitting
)
1911 serial_close (remote_desc
);
1915 /* Query the remote side for the text, data and bss offsets. */
1920 struct remote_state
*rs
= get_remote_state ();
1921 char *buf
= alloca (rs
->remote_packet_size
);
1924 CORE_ADDR text_addr
, data_addr
, bss_addr
;
1925 struct section_offsets
*offs
;
1927 putpkt ("qOffsets");
1929 getpkt (buf
, (rs
->remote_packet_size
), 0);
1931 if (buf
[0] == '\000')
1932 return; /* Return silently. Stub doesn't support
1936 warning ("Remote failure reply: %s", buf
);
1940 /* Pick up each field in turn. This used to be done with scanf, but
1941 scanf will make trouble if CORE_ADDR size doesn't match
1942 conversion directives correctly. The following code will work
1943 with any size of CORE_ADDR. */
1944 text_addr
= data_addr
= bss_addr
= 0;
1948 if (strncmp (ptr
, "Text=", 5) == 0)
1951 /* Don't use strtol, could lose on big values. */
1952 while (*ptr
&& *ptr
!= ';')
1953 text_addr
= (text_addr
<< 4) + fromhex (*ptr
++);
1958 if (!lose
&& strncmp (ptr
, ";Data=", 6) == 0)
1961 while (*ptr
&& *ptr
!= ';')
1962 data_addr
= (data_addr
<< 4) + fromhex (*ptr
++);
1967 if (!lose
&& strncmp (ptr
, ";Bss=", 5) == 0)
1970 while (*ptr
&& *ptr
!= ';')
1971 bss_addr
= (bss_addr
<< 4) + fromhex (*ptr
++);
1977 error ("Malformed response to offset query, %s", buf
);
1979 if (symfile_objfile
== NULL
)
1982 offs
= ((struct section_offsets
*)
1983 alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
)));
1984 memcpy (offs
, symfile_objfile
->section_offsets
,
1985 SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
));
1987 offs
->offsets
[SECT_OFF_TEXT (symfile_objfile
)] = text_addr
;
1989 /* This is a temporary kludge to force data and bss to use the same offsets
1990 because that's what nlmconv does now. The real solution requires changes
1991 to the stub and remote.c that I don't have time to do right now. */
1993 offs
->offsets
[SECT_OFF_DATA (symfile_objfile
)] = data_addr
;
1994 offs
->offsets
[SECT_OFF_BSS (symfile_objfile
)] = data_addr
;
1996 objfile_relocate (symfile_objfile
, offs
);
2000 * Cisco version of section offsets:
2002 * Instead of having GDB query the target for the section offsets,
2003 * Cisco lets the target volunteer the information! It's also in
2004 * a different format, so here are the functions that will decode
2005 * a section offset packet from a Cisco target.
2009 * Function: remote_cisco_section_offsets
2011 * Returns: zero for success, non-zero for failure
2015 remote_cisco_section_offsets (bfd_vma text_addr
,
2018 bfd_signed_vma
*text_offs
,
2019 bfd_signed_vma
*data_offs
,
2020 bfd_signed_vma
*bss_offs
)
2022 bfd_vma text_base
, data_base
, bss_base
;
2023 struct minimal_symbol
*start
;
2028 if (symfile_objfile
== NULL
)
2029 return -1; /* no can do nothin' */
2031 start
= lookup_minimal_symbol ("_start", NULL
, NULL
);
2033 return -1; /* Can't find "_start" symbol */
2035 data_base
= bss_base
= 0;
2036 text_base
= SYMBOL_VALUE_ADDRESS (start
);
2038 abfd
= symfile_objfile
->obfd
;
2039 for (sect
= abfd
->sections
;
2043 const char *p
= bfd_get_section_name (abfd
, sect
);
2045 if (strcmp (p
+ len
- 4, "data") == 0) /* ends in "data" */
2046 if (data_base
== 0 ||
2047 data_base
> bfd_get_section_vma (abfd
, sect
))
2048 data_base
= bfd_get_section_vma (abfd
, sect
);
2049 if (strcmp (p
+ len
- 3, "bss") == 0) /* ends in "bss" */
2050 if (bss_base
== 0 ||
2051 bss_base
> bfd_get_section_vma (abfd
, sect
))
2052 bss_base
= bfd_get_section_vma (abfd
, sect
);
2054 *text_offs
= text_addr
- text_base
;
2055 *data_offs
= data_addr
- data_base
;
2056 *bss_offs
= bss_addr
- bss_base
;
2061 sprintf (tmp
, "VMA: text = 0x");
2062 sprintf_vma (tmp
+ strlen (tmp
), text_addr
);
2063 sprintf (tmp
+ strlen (tmp
), " data = 0x");
2064 sprintf_vma (tmp
+ strlen (tmp
), data_addr
);
2065 sprintf (tmp
+ strlen (tmp
), " bss = 0x");
2066 sprintf_vma (tmp
+ strlen (tmp
), bss_addr
);
2067 fputs_filtered (tmp
, gdb_stdlog
);
2068 fprintf_filtered (gdb_stdlog
,
2069 "Reloc offset: text = 0x%s data = 0x%s bss = 0x%s\n",
2070 paddr_nz (*text_offs
),
2071 paddr_nz (*data_offs
),
2072 paddr_nz (*bss_offs
));
2079 * Function: remote_cisco_objfile_relocate
2081 * Relocate the symbol file for a remote target.
2085 remote_cisco_objfile_relocate (bfd_signed_vma text_off
, bfd_signed_vma data_off
,
2086 bfd_signed_vma bss_off
)
2088 struct section_offsets
*offs
;
2090 if (text_off
!= 0 || data_off
!= 0 || bss_off
!= 0)
2092 /* FIXME: This code assumes gdb-stabs.h is being used; it's
2093 broken for xcoff, dwarf, sdb-coff, etc. But there is no
2094 simple canonical representation for this stuff. */
2096 offs
= (struct section_offsets
*)
2097 alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
));
2098 memcpy (offs
, symfile_objfile
->section_offsets
,
2099 SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
));
2101 offs
->offsets
[SECT_OFF_TEXT (symfile_objfile
)] = text_off
;
2102 offs
->offsets
[SECT_OFF_DATA (symfile_objfile
)] = data_off
;
2103 offs
->offsets
[SECT_OFF_BSS (symfile_objfile
)] = bss_off
;
2105 /* First call the standard objfile_relocate. */
2106 objfile_relocate (symfile_objfile
, offs
);
2108 /* Now we need to fix up the section entries already attached to
2109 the exec target. These entries will control memory transfers
2110 from the exec file. */
2112 exec_set_section_offsets (text_off
, data_off
, bss_off
);
2116 /* Stub for catch_errors. */
2119 remote_start_remote_dummy (struct ui_out
*uiout
, void *dummy
)
2121 start_remote (); /* Initialize gdb process mechanisms */
2122 /* NOTE: Return something >=0. A -ve value is reserved for
2123 catch_exceptions. */
2128 remote_start_remote (struct ui_out
*uiout
, void *dummy
)
2130 immediate_quit
++; /* Allow user to interrupt it */
2132 /* Ack any packet which the remote side has already sent. */
2133 serial_write (remote_desc
, "+", 1);
2135 /* Let the stub know that we want it to return the thread. */
2138 inferior_ptid
= remote_current_thread (inferior_ptid
);
2140 get_offsets (); /* Get text, data & bss offsets */
2142 putpkt ("?"); /* initiate a query from remote machine */
2145 /* NOTE: See comment above in remote_start_remote_dummy(). This
2146 function returns something >=0. */
2147 return remote_start_remote_dummy (uiout
, dummy
);
2150 /* Open a connection to a remote debugger.
2151 NAME is the filename used for communication. */
2154 remote_open (char *name
, int from_tty
)
2156 remote_open_1 (name
, from_tty
, &remote_ops
, 0, 0);
2159 /* Just like remote_open, but with asynchronous support. */
2161 remote_async_open (char *name
, int from_tty
)
2163 remote_open_1 (name
, from_tty
, &remote_async_ops
, 0, 1);
2166 /* Open a connection to a remote debugger using the extended
2167 remote gdb protocol. NAME is the filename used for communication. */
2170 extended_remote_open (char *name
, int from_tty
)
2172 remote_open_1 (name
, from_tty
, &extended_remote_ops
, 1 /*extended_p */,
2176 /* Just like extended_remote_open, but with asynchronous support. */
2178 extended_remote_async_open (char *name
, int from_tty
)
2180 remote_open_1 (name
, from_tty
, &extended_async_remote_ops
,
2181 1 /*extended_p */, 1 /* async_p */);
2184 /* Generic code for opening a connection to a remote target. */
2187 init_all_packet_configs (void)
2190 update_packet_config (&remote_protocol_e
);
2191 update_packet_config (&remote_protocol_E
);
2192 update_packet_config (&remote_protocol_P
);
2193 update_packet_config (&remote_protocol_qSymbol
);
2194 for (i
= 0; i
< NR_Z_PACKET_TYPES
; i
++)
2195 update_packet_config (&remote_protocol_Z
[i
]);
2196 /* Force remote_write_bytes to check whether target supports binary
2198 update_packet_config (&remote_protocol_binary_download
);
2201 /* Symbol look-up. */
2204 remote_check_symbols (struct objfile
*objfile
)
2206 struct remote_state
*rs
= get_remote_state ();
2207 char *msg
, *reply
, *tmp
;
2208 struct minimal_symbol
*sym
;
2211 if (remote_protocol_qSymbol
.support
== PACKET_DISABLE
)
2214 msg
= alloca (rs
->remote_packet_size
);
2215 reply
= alloca (rs
->remote_packet_size
);
2217 /* Invite target to request symbol lookups. */
2219 putpkt ("qSymbol::");
2220 getpkt (reply
, (rs
->remote_packet_size
), 0);
2221 packet_ok (reply
, &remote_protocol_qSymbol
);
2223 while (strncmp (reply
, "qSymbol:", 8) == 0)
2226 end
= hex2bin (tmp
, msg
, strlen (tmp
) / 2);
2228 sym
= lookup_minimal_symbol (msg
, NULL
, NULL
);
2230 sprintf (msg
, "qSymbol::%s", &reply
[8]);
2232 sprintf (msg
, "qSymbol:%s:%s",
2233 paddr_nz (SYMBOL_VALUE_ADDRESS (sym
)),
2236 getpkt (reply
, (rs
->remote_packet_size
), 0);
2240 static struct serial
*
2241 remote_serial_open (char *name
)
2243 static int udp_warning
= 0;
2245 /* FIXME: Parsing NAME here is a hack. But we want to warn here instead
2246 of in ser-tcp.c, because it is the remote protocol assuming that the
2247 serial connection is reliable and not the serial connection promising
2249 if (!udp_warning
&& strncmp (name
, "udp:", 4) == 0)
2251 warning ("The remote protocol may be unreliable over UDP.");
2252 warning ("Some events may be lost, rendering further debugging "
2257 return serial_open (name
);
2261 remote_open_1 (char *name
, int from_tty
, struct target_ops
*target
,
2262 int extended_p
, int async_p
)
2265 struct remote_state
*rs
= get_remote_state ();
2267 error ("To open a remote debug connection, you need to specify what\n"
2268 "serial device is attached to the remote system\n"
2269 "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).");
2271 /* See FIXME above */
2273 wait_forever_enabled_p
= 1;
2275 target_preopen (from_tty
);
2277 unpush_target (target
);
2279 remote_desc
= remote_serial_open (name
);
2281 perror_with_name (name
);
2283 if (baud_rate
!= -1)
2285 if (serial_setbaudrate (remote_desc
, baud_rate
))
2287 serial_close (remote_desc
);
2288 perror_with_name (name
);
2292 serial_raw (remote_desc
);
2294 /* If there is something sitting in the buffer we might take it as a
2295 response to a command, which would be bad. */
2296 serial_flush_input (remote_desc
);
2300 puts_filtered ("Remote debugging using ");
2301 puts_filtered (name
);
2302 puts_filtered ("\n");
2304 push_target (target
); /* Switch to using remote target now */
2306 init_all_packet_configs ();
2308 general_thread
= -2;
2309 continue_thread
= -2;
2311 /* Probe for ability to use "ThreadInfo" query, as required. */
2312 use_threadinfo_query
= 1;
2313 use_threadextra_query
= 1;
2315 /* Without this, some commands which require an active target (such
2316 as kill) won't work. This variable serves (at least) double duty
2317 as both the pid of the target process (if it has such), and as a
2318 flag indicating that a target is active. These functions should
2319 be split out into seperate variables, especially since GDB will
2320 someday have a notion of debugging several processes. */
2322 inferior_ptid
= pid_to_ptid (MAGIC_NULL_PID
);
2326 /* With this target we start out by owning the terminal. */
2327 remote_async_terminal_ours_p
= 1;
2329 /* FIXME: cagney/1999-09-23: During the initial connection it is
2330 assumed that the target is already ready and able to respond to
2331 requests. Unfortunately remote_start_remote() eventually calls
2332 wait_for_inferior() with no timeout. wait_forever_enabled_p gets
2333 around this. Eventually a mechanism that allows
2334 wait_for_inferior() to expect/get timeouts will be
2336 wait_forever_enabled_p
= 0;
2339 #ifdef SOLIB_CREATE_INFERIOR_HOOK
2340 /* First delete any symbols previously loaded from shared libraries. */
2341 no_shared_libraries (NULL
, 0);
2344 /* Start the remote connection. If error() or QUIT, discard this
2345 target (we'd otherwise be in an inconsistent state) and then
2346 propogate the error on up the exception chain. This ensures that
2347 the caller doesn't stumble along blindly assuming that the
2348 function succeeded. The CLI doesn't have this problem but other
2349 UI's, such as MI do.
2351 FIXME: cagney/2002-05-19: Instead of re-throwing the exception,
2352 this function should return an error indication letting the
2353 caller restore the previous state. Unfortunatly the command
2354 ``target remote'' is directly wired to this function making that
2355 impossible. On a positive note, the CLI side of this problem has
2356 been fixed - the function set_cmd_context() makes it possible for
2357 all the ``target ....'' commands to share a common callback
2358 function. See cli-dump.c. */
2359 ex
= catch_exceptions (uiout
,
2360 remote_start_remote
, NULL
,
2361 "Couldn't establish connection to remote"
2368 wait_forever_enabled_p
= 1;
2369 throw_exception (ex
);
2373 wait_forever_enabled_p
= 1;
2377 /* Tell the remote that we are using the extended protocol. */
2378 char *buf
= alloca (rs
->remote_packet_size
);
2380 getpkt (buf
, (rs
->remote_packet_size
), 0);
2382 #ifdef SOLIB_CREATE_INFERIOR_HOOK
2383 /* FIXME: need a master target_open vector from which all
2384 remote_opens can be called, so that stuff like this can
2385 go there. Failing that, the following code must be copied
2386 to the open function for any remote target that wants to
2387 support svr4 shared libraries. */
2389 /* Set up to detect and load shared libraries. */
2390 if (exec_bfd
) /* No use without an exec file. */
2392 SOLIB_CREATE_INFERIOR_HOOK (PIDGET (inferior_ptid
));
2393 remote_check_symbols (symfile_objfile
);
2398 /* This takes a program previously attached to and detaches it. After
2399 this is done, GDB can be used to debug some other program. We
2400 better not have left any breakpoints in the target program or it'll
2401 die when it hits one. */
2404 remote_detach (char *args
, int from_tty
)
2406 struct remote_state
*rs
= get_remote_state ();
2407 char *buf
= alloca (rs
->remote_packet_size
);
2410 error ("Argument given to \"detach\" when remotely debugging.");
2412 /* Tell the remote target to detach. */
2414 remote_send (buf
, (rs
->remote_packet_size
));
2416 /* Unregister the file descriptor from the event loop. */
2417 if (target_is_async_p ())
2418 serial_async (remote_desc
, NULL
, 0);
2420 target_mourn_inferior ();
2422 puts_filtered ("Ending remote debugging.\n");
2425 /* Same as remote_detach, but don't send the "D" packet; just disconnect. */
2428 remote_disconnect (char *args
, int from_tty
)
2430 struct remote_state
*rs
= get_remote_state ();
2431 char *buf
= alloca (rs
->remote_packet_size
);
2434 error ("Argument given to \"detach\" when remotely debugging.");
2436 /* Unregister the file descriptor from the event loop. */
2437 if (target_is_async_p ())
2438 serial_async (remote_desc
, NULL
, 0);
2440 target_mourn_inferior ();
2442 puts_filtered ("Ending remote debugging.\n");
2445 /* Convert hex digit A to a number. */
2450 if (a
>= '0' && a
<= '9')
2452 else if (a
>= 'a' && a
<= 'f')
2453 return a
- 'a' + 10;
2454 else if (a
>= 'A' && a
<= 'F')
2455 return a
- 'A' + 10;
2457 error ("Reply contains invalid hex digit %d", a
);
2461 hex2bin (const char *hex
, char *bin
, int count
)
2465 for (i
= 0; i
< count
; i
++)
2467 if (hex
[0] == 0 || hex
[1] == 0)
2469 /* Hex string is short, or of uneven length.
2470 Return the count that has been converted so far. */
2473 *bin
++ = fromhex (hex
[0]) * 16 + fromhex (hex
[1]);
2479 /* Convert number NIB to a hex digit. */
2487 return 'a' + nib
- 10;
2491 bin2hex (const char *bin
, char *hex
, int count
)
2494 /* May use a length, or a nul-terminated string as input. */
2496 count
= strlen (bin
);
2498 for (i
= 0; i
< count
; i
++)
2500 *hex
++ = tohex ((*bin
>> 4) & 0xf);
2501 *hex
++ = tohex (*bin
++ & 0xf);
2507 /* Tell the remote machine to resume. */
2509 static enum target_signal last_sent_signal
= TARGET_SIGNAL_0
;
2511 static int last_sent_step
;
2514 remote_resume (ptid_t ptid
, int step
, enum target_signal siggnal
)
2516 struct remote_state
*rs
= get_remote_state ();
2517 char *buf
= alloca (rs
->remote_packet_size
);
2518 int pid
= PIDGET (ptid
);
2522 set_thread (0, 0); /* run any thread */
2524 set_thread (pid
, 0); /* run this thread */
2526 last_sent_signal
= siggnal
;
2527 last_sent_step
= step
;
2529 /* A hook for when we need to do something at the last moment before
2531 if (target_resume_hook
)
2532 (*target_resume_hook
) ();
2535 /* The s/S/c/C packets do not return status. So if the target does
2536 not support the S or C packets, the debug agent returns an empty
2537 string which is detected in remote_wait(). This protocol defect
2538 is fixed in the e/E packets. */
2540 if (step
&& step_range_end
)
2542 /* If the target does not support the 'E' packet, we try the 'S'
2543 packet. Ideally we would fall back to the 'e' packet if that
2544 too is not supported. But that would require another copy of
2545 the code to issue the 'e' packet (and fall back to 's' if not
2546 supported) in remote_wait(). */
2548 if (siggnal
!= TARGET_SIGNAL_0
)
2550 if (remote_protocol_E
.support
!= PACKET_DISABLE
)
2554 *p
++ = tohex (((int) siggnal
>> 4) & 0xf);
2555 *p
++ = tohex (((int) siggnal
) & 0xf);
2557 p
+= hexnumstr (p
, (ULONGEST
) step_range_start
);
2559 p
+= hexnumstr (p
, (ULONGEST
) step_range_end
);
2563 getpkt (buf
, (rs
->remote_packet_size
), 0);
2565 if (packet_ok (buf
, &remote_protocol_E
) == PACKET_OK
)
2571 if (remote_protocol_e
.support
!= PACKET_DISABLE
)
2575 p
+= hexnumstr (p
, (ULONGEST
) step_range_start
);
2577 p
+= hexnumstr (p
, (ULONGEST
) step_range_end
);
2581 getpkt (buf
, (rs
->remote_packet_size
), 0);
2583 if (packet_ok (buf
, &remote_protocol_e
) == PACKET_OK
)
2589 if (siggnal
!= TARGET_SIGNAL_0
)
2591 buf
[0] = step
? 'S' : 'C';
2592 buf
[1] = tohex (((int) siggnal
>> 4) & 0xf);
2593 buf
[2] = tohex (((int) siggnal
) & 0xf);
2597 strcpy (buf
, step
? "s" : "c");
2602 /* Same as remote_resume, but with async support. */
2604 remote_async_resume (ptid_t ptid
, int step
, enum target_signal siggnal
)
2606 struct remote_state
*rs
= get_remote_state ();
2607 char *buf
= alloca (rs
->remote_packet_size
);
2608 int pid
= PIDGET (ptid
);
2612 set_thread (0, 0); /* run any thread */
2614 set_thread (pid
, 0); /* run this thread */
2616 last_sent_signal
= siggnal
;
2617 last_sent_step
= step
;
2619 /* A hook for when we need to do something at the last moment before
2621 if (target_resume_hook
)
2622 (*target_resume_hook
) ();
2624 /* The s/S/c/C packets do not return status. So if the target does
2625 not support the S or C packets, the debug agent returns an empty
2626 string which is detected in remote_wait(). This protocol defect
2627 is fixed in the e/E packets. */
2629 if (step
&& step_range_end
)
2631 /* If the target does not support the 'E' packet, we try the 'S'
2632 packet. Ideally we would fall back to the 'e' packet if that
2633 too is not supported. But that would require another copy of
2634 the code to issue the 'e' packet (and fall back to 's' if not
2635 supported) in remote_wait(). */
2637 if (siggnal
!= TARGET_SIGNAL_0
)
2639 if (remote_protocol_E
.support
!= PACKET_DISABLE
)
2643 *p
++ = tohex (((int) siggnal
>> 4) & 0xf);
2644 *p
++ = tohex (((int) siggnal
) & 0xf);
2646 p
+= hexnumstr (p
, (ULONGEST
) step_range_start
);
2648 p
+= hexnumstr (p
, (ULONGEST
) step_range_end
);
2652 getpkt (buf
, (rs
->remote_packet_size
), 0);
2654 if (packet_ok (buf
, &remote_protocol_E
) == PACKET_OK
)
2655 goto register_event_loop
;
2660 if (remote_protocol_e
.support
!= PACKET_DISABLE
)
2664 p
+= hexnumstr (p
, (ULONGEST
) step_range_start
);
2666 p
+= hexnumstr (p
, (ULONGEST
) step_range_end
);
2670 getpkt (buf
, (rs
->remote_packet_size
), 0);
2672 if (packet_ok (buf
, &remote_protocol_e
) == PACKET_OK
)
2673 goto register_event_loop
;
2678 if (siggnal
!= TARGET_SIGNAL_0
)
2680 buf
[0] = step
? 'S' : 'C';
2681 buf
[1] = tohex (((int) siggnal
>> 4) & 0xf);
2682 buf
[2] = tohex ((int) siggnal
& 0xf);
2686 strcpy (buf
, step
? "s" : "c");
2690 register_event_loop
:
2691 /* We are about to start executing the inferior, let's register it
2692 with the event loop. NOTE: this is the one place where all the
2693 execution commands end up. We could alternatively do this in each
2694 of the execution commands in infcmd.c.*/
2695 /* FIXME: ezannoni 1999-09-28: We may need to move this out of here
2696 into infcmd.c in order to allow inferior function calls to work
2697 NOT asynchronously. */
2698 if (event_loop_p
&& target_can_async_p ())
2699 target_async (inferior_event_handler
, 0);
2700 /* Tell the world that the target is now executing. */
2701 /* FIXME: cagney/1999-09-23: Is it the targets responsibility to set
2702 this? Instead, should the client of target just assume (for
2703 async targets) that the target is going to start executing? Is
2704 this information already found in the continuation block? */
2705 if (target_is_async_p ())
2706 target_executing
= 1;
2710 /* Set up the signal handler for SIGINT, while the target is
2711 executing, ovewriting the 'regular' SIGINT signal handler. */
2713 initialize_sigint_signal_handler (void)
2715 sigint_remote_token
=
2716 create_async_signal_handler (async_remote_interrupt
, NULL
);
2717 signal (SIGINT
, handle_remote_sigint
);
2720 /* Signal handler for SIGINT, while the target is executing. */
2722 handle_remote_sigint (int sig
)
2724 signal (sig
, handle_remote_sigint_twice
);
2725 sigint_remote_twice_token
=
2726 create_async_signal_handler (async_remote_interrupt_twice
, NULL
);
2727 mark_async_signal_handler_wrapper (sigint_remote_token
);
2730 /* Signal handler for SIGINT, installed after SIGINT has already been
2731 sent once. It will take effect the second time that the user sends
2734 handle_remote_sigint_twice (int sig
)
2736 signal (sig
, handle_sigint
);
2737 sigint_remote_twice_token
=
2738 create_async_signal_handler (inferior_event_handler_wrapper
, NULL
);
2739 mark_async_signal_handler_wrapper (sigint_remote_twice_token
);
2742 /* Perform the real interruption of the target execution, in response
2745 async_remote_interrupt (gdb_client_data arg
)
2748 fprintf_unfiltered (gdb_stdlog
, "remote_interrupt called\n");
2753 /* Perform interrupt, if the first attempt did not succeed. Just give
2754 up on the target alltogether. */
2756 async_remote_interrupt_twice (gdb_client_data arg
)
2759 fprintf_unfiltered (gdb_stdlog
, "remote_interrupt_twice called\n");
2760 /* Do something only if the target was not killed by the previous
2762 if (target_executing
)
2765 signal (SIGINT
, handle_remote_sigint
);
2769 /* Reinstall the usual SIGINT handlers, after the target has
2772 cleanup_sigint_signal_handler (void *dummy
)
2774 signal (SIGINT
, handle_sigint
);
2775 if (sigint_remote_twice_token
)
2776 delete_async_signal_handler ((struct async_signal_handler
**) & sigint_remote_twice_token
);
2777 if (sigint_remote_token
)
2778 delete_async_signal_handler ((struct async_signal_handler
**) & sigint_remote_token
);
2781 /* Send ^C to target to halt it. Target will respond, and send us a
2783 static void (*ofunc
) (int);
2785 /* The command line interface's stop routine. This function is installed
2786 as a signal handler for SIGINT. The first time a user requests a
2787 stop, we call remote_stop to send a break or ^C. If there is no
2788 response from the target (it didn't stop when the user requested it),
2789 we ask the user if he'd like to detach from the target. */
2791 remote_interrupt (int signo
)
2793 /* If this doesn't work, try more severe steps. */
2794 signal (signo
, remote_interrupt_twice
);
2797 fprintf_unfiltered (gdb_stdlog
, "remote_interrupt called\n");
2802 /* The user typed ^C twice. */
2805 remote_interrupt_twice (int signo
)
2807 signal (signo
, ofunc
);
2809 signal (signo
, remote_interrupt
);
2812 /* This is the generic stop called via the target vector. When a target
2813 interrupt is requested, either by the command line or the GUI, we
2814 will eventually end up here. */
2818 /* Send a break or a ^C, depending on user preference. */
2820 fprintf_unfiltered (gdb_stdlog
, "remote_stop called\n");
2823 serial_send_break (remote_desc
);
2825 serial_write (remote_desc
, "\003", 1);
2828 /* Ask the user what to do when an interrupt is received. */
2831 interrupt_query (void)
2833 target_terminal_ours ();
2835 if (query ("Interrupted while waiting for the program.\n\
2836 Give up (and stop debugging it)? "))
2838 target_mourn_inferior ();
2839 throw_exception (RETURN_QUIT
);
2842 target_terminal_inferior ();
2845 /* Enable/disable target terminal ownership. Most targets can use
2846 terminal groups to control terminal ownership. Remote targets are
2847 different in that explicit transfer of ownership to/from GDB/target
2851 remote_async_terminal_inferior (void)
2853 /* FIXME: cagney/1999-09-27: Shouldn't need to test for
2854 sync_execution here. This function should only be called when
2855 GDB is resuming the inferior in the forground. A background
2856 resume (``run&'') should leave GDB in control of the terminal and
2857 consequently should not call this code. */
2858 if (!sync_execution
)
2860 /* FIXME: cagney/1999-09-27: Closely related to the above. Make
2861 calls target_terminal_*() idenpotent. The event-loop GDB talking
2862 to an asynchronous target with a synchronous command calls this
2863 function from both event-top.c and infrun.c/infcmd.c. Once GDB
2864 stops trying to transfer the terminal to the target when it
2865 shouldn't this guard can go away. */
2866 if (!remote_async_terminal_ours_p
)
2868 delete_file_handler (input_fd
);
2869 remote_async_terminal_ours_p
= 0;
2870 initialize_sigint_signal_handler ();
2871 /* NOTE: At this point we could also register our selves as the
2872 recipient of all input. Any characters typed could then be
2873 passed on down to the target. */
2877 remote_async_terminal_ours (void)
2879 /* See FIXME in remote_async_terminal_inferior. */
2880 if (!sync_execution
)
2882 /* See FIXME in remote_async_terminal_inferior. */
2883 if (remote_async_terminal_ours_p
)
2885 cleanup_sigint_signal_handler (NULL
);
2886 add_file_handler (input_fd
, stdin_event_handler
, 0);
2887 remote_async_terminal_ours_p
= 1;
2890 /* If nonzero, ignore the next kill. */
2895 remote_console_output (char *msg
)
2899 for (p
= msg
; p
[0] && p
[1]; p
+= 2)
2902 char c
= fromhex (p
[0]) * 16 + fromhex (p
[1]);
2905 fputs_unfiltered (tb
, gdb_stdtarg
);
2907 gdb_flush (gdb_stdtarg
);
2910 /* Wait until the remote machine stops, then return,
2911 storing status in STATUS just as `wait' would.
2912 Returns "pid", which in the case of a multi-threaded
2913 remote OS, is the thread-id. */
2916 remote_wait (ptid_t ptid
, struct target_waitstatus
*status
)
2918 struct remote_state
*rs
= get_remote_state ();
2919 unsigned char *buf
= alloca (rs
->remote_packet_size
);
2920 ULONGEST thread_num
= -1;
2923 status
->kind
= TARGET_WAITKIND_EXITED
;
2924 status
->value
.integer
= 0;
2930 ofunc
= signal (SIGINT
, remote_interrupt
);
2931 getpkt (buf
, (rs
->remote_packet_size
), 1);
2932 signal (SIGINT
, ofunc
);
2934 /* This is a hook for when we need to do something (perhaps the
2935 collection of trace data) every time the target stops. */
2936 if (target_wait_loop_hook
)
2937 (*target_wait_loop_hook
) ();
2939 remote_stopped_by_watchpoint_p
= 0;
2943 case 'E': /* Error of some sort */
2944 warning ("Remote failure reply: %s", buf
);
2946 case 'F': /* File-I/O request */
2947 remote_fileio_request (buf
);
2949 case 'T': /* Status with PC, SP, FP, ... */
2952 char regs
[MAX_REGISTER_SIZE
];
2954 /* Expedited reply, containing Signal, {regno, reg} repeat */
2955 /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where
2957 n... = register number
2958 r... = register contents
2960 p
= &buf
[3]; /* after Txx */
2969 /* If the packet contains a register number save it in pnum
2970 and set p1 to point to the character following it.
2971 Otherwise p1 points to p. */
2973 /* If this packet is an awatch packet, don't parse the 'a'
2974 as a register number. */
2976 if (strncmp (p
, "awatch", strlen("awatch")) != 0)
2978 /* Read the ``P'' register number. */
2979 pnum
= strtol (p
, &p_temp
, 16);
2980 p1
= (unsigned char *) p_temp
;
2985 if (p1
== p
) /* No register number present here */
2987 p1
= (unsigned char *) strchr (p
, ':');
2989 warning ("Malformed packet(a) (missing colon): %s\n\
2992 if (strncmp (p
, "thread", p1
- p
) == 0)
2994 p_temp
= unpack_varlen_hex (++p1
, &thread_num
);
2995 record_currthread (thread_num
);
2996 p
= (unsigned char *) p_temp
;
2998 else if ((strncmp (p
, "watch", p1
- p
) == 0)
2999 || (strncmp (p
, "rwatch", p1
- p
) == 0)
3000 || (strncmp (p
, "awatch", p1
- p
) == 0))
3002 remote_stopped_by_watchpoint_p
= 1;
3003 p
= unpack_varlen_hex (++p1
, &addr
);
3004 remote_watch_data_address
= (CORE_ADDR
)addr
;
3008 /* Silently skip unknown optional info. */
3009 p_temp
= strchr (p1
+ 1, ';');
3011 p
= (unsigned char *) p_temp
;
3016 struct packet_reg
*reg
= packet_reg_from_pnum (rs
, pnum
);
3020 error ("Malformed packet(b) (missing colon): %s\nPacket: '%s'\n",
3024 error ("Remote sent bad register number %s: %s\nPacket: '%s'\n",
3025 phex_nz (pnum
, 0), p
, buf
);
3027 fieldsize
= hex2bin (p
, regs
, REGISTER_RAW_SIZE (reg
->regnum
));
3029 if (fieldsize
< REGISTER_RAW_SIZE (reg
->regnum
))
3030 warning ("Remote reply is too short: %s", buf
);
3031 supply_register (reg
->regnum
, regs
);
3035 error ("Remote register badly formatted: %s\nhere: %s", buf
, p
);
3039 case 'S': /* Old style status, just signal only */
3040 status
->kind
= TARGET_WAITKIND_STOPPED
;
3041 status
->value
.sig
= (enum target_signal
)
3042 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
3046 /* Export Cisco kernel mode as a convenience variable
3047 (so that it can be used in the GDB prompt if desired). */
3049 if (cisco_kernel_mode
== 1)
3050 set_internalvar (lookup_internalvar ("cisco_kernel_mode"),
3051 value_from_string ("PDEBUG-"));
3052 cisco_kernel_mode
= 0;
3053 thread_num
= strtol ((const char *) &buf
[4], NULL
, 16);
3054 record_currthread (thread_num
);
3056 else if (buf
[3] == 'k')
3058 /* Export Cisco kernel mode as a convenience variable
3059 (so that it can be used in the GDB prompt if desired). */
3061 if (cisco_kernel_mode
== 1)
3062 set_internalvar (lookup_internalvar ("cisco_kernel_mode"),
3063 value_from_string ("KDEBUG-"));
3064 cisco_kernel_mode
= 1;
3067 case 'N': /* Cisco special: status and offsets */
3069 bfd_vma text_addr
, data_addr
, bss_addr
;
3070 bfd_signed_vma text_off
, data_off
, bss_off
;
3073 status
->kind
= TARGET_WAITKIND_STOPPED
;
3074 status
->value
.sig
= (enum target_signal
)
3075 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
3077 if (symfile_objfile
== NULL
)
3079 warning ("Relocation packet received with no symbol file. \
3084 /* Relocate object file. Buffer format is NAATT;DD;BB
3085 * where AA is the signal number, TT is the new text
3086 * address, DD * is the new data address, and BB is the
3087 * new bss address. */
3090 text_addr
= strtoul (p
, (char **) &p1
, 16);
3091 if (p1
== p
|| *p1
!= ';')
3092 warning ("Malformed relocation packet: Packet '%s'", buf
);
3094 data_addr
= strtoul (p
, (char **) &p1
, 16);
3095 if (p1
== p
|| *p1
!= ';')
3096 warning ("Malformed relocation packet: Packet '%s'", buf
);
3098 bss_addr
= strtoul (p
, (char **) &p1
, 16);
3100 warning ("Malformed relocation packet: Packet '%s'", buf
);
3102 if (remote_cisco_section_offsets (text_addr
, data_addr
, bss_addr
,
3103 &text_off
, &data_off
, &bss_off
)
3105 if (text_off
!= 0 || data_off
!= 0 || bss_off
!= 0)
3106 remote_cisco_objfile_relocate (text_off
, data_off
, bss_off
);
3110 case 'W': /* Target exited */
3112 /* The remote process exited. */
3113 status
->kind
= TARGET_WAITKIND_EXITED
;
3114 status
->value
.integer
= (fromhex (buf
[1]) << 4) + fromhex (buf
[2]);
3118 status
->kind
= TARGET_WAITKIND_SIGNALLED
;
3119 status
->value
.sig
= (enum target_signal
)
3120 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
3124 case 'O': /* Console output */
3125 remote_console_output (buf
+ 1);
3128 if (last_sent_signal
!= TARGET_SIGNAL_0
)
3130 /* Zero length reply means that we tried 'S' or 'C' and
3131 the remote system doesn't support it. */
3132 target_terminal_ours_for_output ();
3134 ("Can't send signals to this remote system. %s not sent.\n",
3135 target_signal_to_name (last_sent_signal
));
3136 last_sent_signal
= TARGET_SIGNAL_0
;
3137 target_terminal_inferior ();
3139 strcpy ((char *) buf
, last_sent_step
? "s" : "c");
3140 putpkt ((char *) buf
);
3143 /* else fallthrough */
3145 warning ("Invalid remote reply: %s", buf
);
3150 if (thread_num
!= -1)
3152 return pid_to_ptid (thread_num
);
3154 return inferior_ptid
;
3157 /* Async version of remote_wait. */
3159 remote_async_wait (ptid_t ptid
, struct target_waitstatus
*status
)
3161 struct remote_state
*rs
= get_remote_state ();
3162 unsigned char *buf
= alloca (rs
->remote_packet_size
);
3163 ULONGEST thread_num
= -1;
3166 status
->kind
= TARGET_WAITKIND_EXITED
;
3167 status
->value
.integer
= 0;
3169 remote_stopped_by_watchpoint_p
= 0;
3175 if (!target_is_async_p ())
3176 ofunc
= signal (SIGINT
, remote_interrupt
);
3177 /* FIXME: cagney/1999-09-27: If we're in async mode we should
3178 _never_ wait for ever -> test on target_is_async_p().
3179 However, before we do that we need to ensure that the caller
3180 knows how to take the target into/out of async mode. */
3181 getpkt (buf
, (rs
->remote_packet_size
), wait_forever_enabled_p
);
3182 if (!target_is_async_p ())
3183 signal (SIGINT
, ofunc
);
3185 /* This is a hook for when we need to do something (perhaps the
3186 collection of trace data) every time the target stops. */
3187 if (target_wait_loop_hook
)
3188 (*target_wait_loop_hook
) ();
3192 case 'E': /* Error of some sort */
3193 warning ("Remote failure reply: %s", buf
);
3195 case 'F': /* File-I/O request */
3196 remote_fileio_request (buf
);
3198 case 'T': /* Status with PC, SP, FP, ... */
3201 char regs
[MAX_REGISTER_SIZE
];
3203 /* Expedited reply, containing Signal, {regno, reg} repeat */
3204 /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where
3206 n... = register number
3207 r... = register contents
3209 p
= &buf
[3]; /* after Txx */
3218 /* If the packet contains a register number, save it in pnum
3219 and set p1 to point to the character following it.
3220 Otherwise p1 points to p. */
3222 /* If this packet is an awatch packet, don't parse the 'a'
3223 as a register number. */
3225 if (!strncmp (p
, "awatch", strlen ("awatch")) != 0)
3227 /* Read the register number. */
3228 pnum
= strtol (p
, &p_temp
, 16);
3229 p1
= (unsigned char *) p_temp
;
3234 if (p1
== p
) /* No register number present here */
3236 p1
= (unsigned char *) strchr (p
, ':');
3238 error ("Malformed packet(a) (missing colon): %s\nPacket: '%s'\n",
3240 if (strncmp (p
, "thread", p1
- p
) == 0)
3242 p_temp
= unpack_varlen_hex (++p1
, &thread_num
);
3243 record_currthread (thread_num
);
3244 p
= (unsigned char *) p_temp
;
3246 else if ((strncmp (p
, "watch", p1
- p
) == 0)
3247 || (strncmp (p
, "rwatch", p1
- p
) == 0)
3248 || (strncmp (p
, "awatch", p1
- p
) == 0))
3250 remote_stopped_by_watchpoint_p
= 1;
3251 p
= unpack_varlen_hex (++p1
, &addr
);
3252 remote_watch_data_address
= (CORE_ADDR
)addr
;
3256 /* Silently skip unknown optional info. */
3257 p_temp
= (unsigned char *) strchr (p1
+ 1, ';');
3265 struct packet_reg
*reg
= packet_reg_from_pnum (rs
, pnum
);
3268 error ("Malformed packet(b) (missing colon): %s\nPacket: '%s'\n",
3272 error ("Remote sent bad register number %ld: %s\nPacket: '%s'\n",
3275 fieldsize
= hex2bin (p
, regs
, REGISTER_RAW_SIZE (reg
->regnum
));
3277 if (fieldsize
< REGISTER_RAW_SIZE (reg
->regnum
))
3278 warning ("Remote reply is too short: %s", buf
);
3279 supply_register (reg
->regnum
, regs
);
3283 error ("Remote register badly formatted: %s\nhere: %s",
3288 case 'S': /* Old style status, just signal only */
3289 status
->kind
= TARGET_WAITKIND_STOPPED
;
3290 status
->value
.sig
= (enum target_signal
)
3291 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
3295 /* Export Cisco kernel mode as a convenience variable
3296 (so that it can be used in the GDB prompt if desired). */
3298 if (cisco_kernel_mode
== 1)
3299 set_internalvar (lookup_internalvar ("cisco_kernel_mode"),
3300 value_from_string ("PDEBUG-"));
3301 cisco_kernel_mode
= 0;
3302 thread_num
= strtol ((const char *) &buf
[4], NULL
, 16);
3303 record_currthread (thread_num
);
3305 else if (buf
[3] == 'k')
3307 /* Export Cisco kernel mode as a convenience variable
3308 (so that it can be used in the GDB prompt if desired). */
3310 if (cisco_kernel_mode
== 1)
3311 set_internalvar (lookup_internalvar ("cisco_kernel_mode"),
3312 value_from_string ("KDEBUG-"));
3313 cisco_kernel_mode
= 1;
3316 case 'N': /* Cisco special: status and offsets */
3318 bfd_vma text_addr
, data_addr
, bss_addr
;
3319 bfd_signed_vma text_off
, data_off
, bss_off
;
3322 status
->kind
= TARGET_WAITKIND_STOPPED
;
3323 status
->value
.sig
= (enum target_signal
)
3324 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
3326 if (symfile_objfile
== NULL
)
3328 warning ("Relocation packet recieved with no symbol file. \
3333 /* Relocate object file. Buffer format is NAATT;DD;BB
3334 * where AA is the signal number, TT is the new text
3335 * address, DD * is the new data address, and BB is the
3336 * new bss address. */
3339 text_addr
= strtoul (p
, (char **) &p1
, 16);
3340 if (p1
== p
|| *p1
!= ';')
3341 warning ("Malformed relocation packet: Packet '%s'", buf
);
3343 data_addr
= strtoul (p
, (char **) &p1
, 16);
3344 if (p1
== p
|| *p1
!= ';')
3345 warning ("Malformed relocation packet: Packet '%s'", buf
);
3347 bss_addr
= strtoul (p
, (char **) &p1
, 16);
3349 warning ("Malformed relocation packet: Packet '%s'", buf
);
3351 if (remote_cisco_section_offsets (text_addr
, data_addr
, bss_addr
,
3352 &text_off
, &data_off
, &bss_off
)
3354 if (text_off
!= 0 || data_off
!= 0 || bss_off
!= 0)
3355 remote_cisco_objfile_relocate (text_off
, data_off
, bss_off
);
3359 case 'W': /* Target exited */
3361 /* The remote process exited. */
3362 status
->kind
= TARGET_WAITKIND_EXITED
;
3363 status
->value
.integer
= (fromhex (buf
[1]) << 4) + fromhex (buf
[2]);
3367 status
->kind
= TARGET_WAITKIND_SIGNALLED
;
3368 status
->value
.sig
= (enum target_signal
)
3369 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
3373 case 'O': /* Console output */
3374 remote_console_output (buf
+ 1);
3375 /* Return immediately to the event loop. The event loop will
3376 still be waiting on the inferior afterwards. */
3377 status
->kind
= TARGET_WAITKIND_IGNORE
;
3380 if (last_sent_signal
!= TARGET_SIGNAL_0
)
3382 /* Zero length reply means that we tried 'S' or 'C' and
3383 the remote system doesn't support it. */
3384 target_terminal_ours_for_output ();
3386 ("Can't send signals to this remote system. %s not sent.\n",
3387 target_signal_to_name (last_sent_signal
));
3388 last_sent_signal
= TARGET_SIGNAL_0
;
3389 target_terminal_inferior ();
3391 strcpy ((char *) buf
, last_sent_step
? "s" : "c");
3392 putpkt ((char *) buf
);
3395 /* else fallthrough */
3397 warning ("Invalid remote reply: %s", buf
);
3402 if (thread_num
!= -1)
3404 return pid_to_ptid (thread_num
);
3406 return inferior_ptid
;
3409 /* Number of bytes of registers this stub implements. */
3411 static int register_bytes_found
;
3413 /* Read the remote registers into the block REGS. */
3414 /* Currently we just read all the registers, so we don't use regnum. */
3418 remote_fetch_registers (int regnum
)
3420 struct remote_state
*rs
= get_remote_state ();
3421 char *buf
= alloca (rs
->remote_packet_size
);
3424 char *regs
= alloca (rs
->sizeof_g_packet
);
3426 set_thread (PIDGET (inferior_ptid
), 1);
3430 struct packet_reg
*reg
= packet_reg_from_regnum (rs
, regnum
);
3431 gdb_assert (reg
!= NULL
);
3432 if (!reg
->in_g_packet
)
3433 internal_error (__FILE__
, __LINE__
,
3434 "Attempt to fetch a non G-packet register when this "
3435 "remote.c does not support the p-packet.");
3439 remote_send (buf
, (rs
->remote_packet_size
));
3441 /* Save the size of the packet sent to us by the target. Its used
3442 as a heuristic when determining the max size of packets that the
3443 target can safely receive. */
3444 if ((rs
->actual_register_packet_size
) == 0)
3445 (rs
->actual_register_packet_size
) = strlen (buf
);
3447 /* Unimplemented registers read as all bits zero. */
3448 memset (regs
, 0, rs
->sizeof_g_packet
);
3450 /* We can get out of synch in various cases. If the first character
3451 in the buffer is not a hex character, assume that has happened
3452 and try to fetch another packet to read. */
3453 while ((buf
[0] < '0' || buf
[0] > '9')
3454 && (buf
[0] < 'a' || buf
[0] > 'f')
3455 && buf
[0] != 'x') /* New: unavailable register value */
3458 fprintf_unfiltered (gdb_stdlog
,
3459 "Bad register packet; fetching a new packet\n");
3460 getpkt (buf
, (rs
->remote_packet_size
), 0);
3463 /* Reply describes registers byte by byte, each byte encoded as two
3464 hex characters. Suck them all up, then supply them to the
3465 register cacheing/storage mechanism. */
3468 for (i
= 0; i
< rs
->sizeof_g_packet
; i
++)
3474 warning ("Remote reply is of odd length: %s", buf
);
3475 /* Don't change register_bytes_found in this case, and don't
3476 print a second warning. */
3479 if (p
[0] == 'x' && p
[1] == 'x')
3480 regs
[i
] = 0; /* 'x' */
3482 regs
[i
] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
3486 if (i
!= register_bytes_found
)
3488 register_bytes_found
= i
;
3489 if (REGISTER_BYTES_OK_P ()
3490 && !REGISTER_BYTES_OK (i
))
3491 warning ("Remote reply is too short: %s", buf
);
3497 for (i
= 0; i
< NUM_REGS
+ NUM_PSEUDO_REGS
; i
++)
3499 struct packet_reg
*r
= &rs
->regs
[i
];
3502 supply_register (r
->regnum
, regs
+ r
->offset
);
3503 if (buf
[r
->offset
* 2] == 'x')
3504 set_register_cached (i
, -1);
3510 /* Prepare to store registers. Since we may send them all (using a
3511 'G' request), we have to read out the ones we don't want to change
3515 remote_prepare_to_store (void)
3517 struct remote_state
*rs
= get_remote_state ();
3519 char buf
[MAX_REGISTER_SIZE
];
3521 /* Make sure the entire registers array is valid. */
3522 switch (remote_protocol_P
.support
)
3524 case PACKET_DISABLE
:
3525 case PACKET_SUPPORT_UNKNOWN
:
3526 /* Make sure all the necessary registers are cached. */
3527 for (i
= 0; i
< NUM_REGS
; i
++)
3528 if (rs
->regs
[i
].in_g_packet
)
3529 regcache_raw_read (current_regcache
, rs
->regs
[i
].regnum
, buf
);
3536 /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF
3537 packet was not recognized. */
3540 store_register_using_P (int regnum
)
3542 struct remote_state
*rs
= get_remote_state ();
3543 struct packet_reg
*reg
= packet_reg_from_regnum (rs
, regnum
);
3544 /* Try storing a single register. */
3545 char *buf
= alloca (rs
->remote_packet_size
);
3546 char regp
[MAX_REGISTER_SIZE
];
3550 sprintf (buf
, "P%s=", phex_nz (reg
->pnum
, 0));
3551 p
= buf
+ strlen (buf
);
3552 regcache_collect (reg
->regnum
, regp
);
3553 bin2hex (regp
, p
, REGISTER_RAW_SIZE (reg
->regnum
));
3554 remote_send (buf
, rs
->remote_packet_size
);
3556 return buf
[0] != '\0';
3560 /* Store register REGNUM, or all registers if REGNUM == -1, from the contents
3561 of the register cache buffer. FIXME: ignores errors. */
3564 remote_store_registers (int regnum
)
3566 struct remote_state
*rs
= get_remote_state ();
3572 set_thread (PIDGET (inferior_ptid
), 1);
3576 switch (remote_protocol_P
.support
)
3578 case PACKET_DISABLE
:
3581 if (store_register_using_P (regnum
))
3584 error ("Protocol error: P packet not recognized by stub");
3585 case PACKET_SUPPORT_UNKNOWN
:
3586 if (store_register_using_P (regnum
))
3588 /* The stub recognized the 'P' packet. Remember this. */
3589 remote_protocol_P
.support
= PACKET_ENABLE
;
3594 /* The stub does not support the 'P' packet. Use 'G'
3595 instead, and don't try using 'P' in the future (it
3596 will just waste our time). */
3597 remote_protocol_P
.support
= PACKET_DISABLE
;
3603 /* Extract all the registers in the regcache copying them into a
3607 regs
= alloca (rs
->sizeof_g_packet
);
3608 memset (regs
, rs
->sizeof_g_packet
, 0);
3609 for (i
= 0; i
< NUM_REGS
+ NUM_PSEUDO_REGS
; i
++)
3611 struct packet_reg
*r
= &rs
->regs
[i
];
3613 regcache_collect (r
->regnum
, regs
+ r
->offset
);
3617 /* Command describes registers byte by byte,
3618 each byte encoded as two hex characters. */
3619 buf
= alloca (rs
->remote_packet_size
);
3622 /* remote_prepare_to_store insures that register_bytes_found gets set. */
3623 bin2hex (regs
, p
, register_bytes_found
);
3624 remote_send (buf
, (rs
->remote_packet_size
));
3628 /* Return the number of hex digits in num. */
3631 hexnumlen (ULONGEST num
)
3635 for (i
= 0; num
!= 0; i
++)
3641 /* Set BUF to the minimum number of hex digits representing NUM. */
3644 hexnumstr (char *buf
, ULONGEST num
)
3646 int len
= hexnumlen (num
);
3647 return hexnumnstr (buf
, num
, len
);
3651 /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */
3654 hexnumnstr (char *buf
, ULONGEST num
, int width
)
3660 for (i
= width
- 1; i
>= 0; i
--)
3662 buf
[i
] = "0123456789abcdef"[(num
& 0xf)];
3669 /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */
3672 remote_address_masked (CORE_ADDR addr
)
3674 if (remote_address_size
> 0
3675 && remote_address_size
< (sizeof (ULONGEST
) * 8))
3677 /* Only create a mask when that mask can safely be constructed
3678 in a ULONGEST variable. */
3680 mask
= (mask
<< remote_address_size
) - 1;
3686 /* Determine whether the remote target supports binary downloading.
3687 This is accomplished by sending a no-op memory write of zero length
3688 to the target at the specified address. It does not suffice to send
3689 the whole packet, since many stubs strip the eighth bit and subsequently
3690 compute a wrong checksum, which causes real havoc with remote_write_bytes.
3692 NOTE: This can still lose if the serial line is not eight-bit
3693 clean. In cases like this, the user should clear "remote
3697 check_binary_download (CORE_ADDR addr
)
3699 struct remote_state
*rs
= get_remote_state ();
3700 switch (remote_protocol_binary_download
.support
)
3702 case PACKET_DISABLE
:
3706 case PACKET_SUPPORT_UNKNOWN
:
3708 char *buf
= alloca (rs
->remote_packet_size
);
3713 p
+= hexnumstr (p
, (ULONGEST
) addr
);
3715 p
+= hexnumstr (p
, (ULONGEST
) 0);
3719 putpkt_binary (buf
, (int) (p
- buf
));
3720 getpkt (buf
, (rs
->remote_packet_size
), 0);
3725 fprintf_unfiltered (gdb_stdlog
,
3726 "binary downloading NOT suppported by target\n");
3727 remote_protocol_binary_download
.support
= PACKET_DISABLE
;
3732 fprintf_unfiltered (gdb_stdlog
,
3733 "binary downloading suppported by target\n");
3734 remote_protocol_binary_download
.support
= PACKET_ENABLE
;
3741 /* Write memory data directly to the remote machine.
3742 This does not inform the data cache; the data cache uses this.
3743 MEMADDR is the address in the remote memory space.
3744 MYADDR is the address of the buffer in our space.
3745 LEN is the number of bytes.
3747 Returns number of bytes transferred, or 0 (setting errno) for
3748 error. Only transfer a single packet. */
3751 remote_write_bytes (CORE_ADDR memaddr
, char *myaddr
, int len
)
3755 unsigned char *plen
;
3761 unsigned char *payload_start
;
3763 /* Verify that the target can support a binary download. */
3764 check_binary_download (memaddr
);
3766 /* Compute the size, and then allocate space for the largest
3767 possible packet. Include space for an extra trailing NUL. */
3768 sizeof_buf
= get_memory_write_packet_size () + 1;
3769 buf
= alloca (sizeof_buf
);
3771 /* Compute the size of the actual payload by subtracting out the
3772 packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */
3773 payload_size
= (get_memory_write_packet_size () - (strlen ("$M,:#NN")
3774 + hexnumlen (memaddr
)
3775 + hexnumlen (len
)));
3777 /* Construct the packet header: "[MX]<memaddr>,<len>:". */
3779 /* Append "[XM]". Compute a best guess of the number of bytes
3780 actually transfered. */
3782 switch (remote_protocol_binary_download
.support
)
3786 /* Best guess at number of bytes that will fit. */
3787 todo
= min (len
, payload_size
);
3789 case PACKET_DISABLE
:
3791 /* num bytes that will fit */
3792 todo
= min (len
, payload_size
/ 2);
3794 case PACKET_SUPPORT_UNKNOWN
:
3795 internal_error (__FILE__
, __LINE__
,
3796 "remote_write_bytes: bad internal state");
3798 internal_error (__FILE__
, __LINE__
, "bad switch");
3801 /* Append "<memaddr>". */
3802 memaddr
= remote_address_masked (memaddr
);
3803 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
3808 /* Append <len>. Retain the location/size of <len>. It may need to
3809 be adjusted once the packet body has been created. */
3811 plenlen
= hexnumstr (p
, (ULONGEST
) todo
);
3818 /* Append the packet body. */
3820 switch (remote_protocol_binary_download
.support
)
3823 /* Binary mode. Send target system values byte by byte, in
3824 increasing byte addresses. Only escape certain critical
3827 (nr_bytes
< todo
) && (p
- payload_start
) < payload_size
;
3830 switch (myaddr
[nr_bytes
] & 0xff)
3835 /* These must be escaped */
3837 *p
++ = (myaddr
[nr_bytes
] & 0xff) ^ 0x20;
3840 *p
++ = myaddr
[nr_bytes
] & 0xff;
3844 if (nr_bytes
< todo
)
3846 /* Escape chars have filled up the buffer prematurely,
3847 and we have actually sent fewer bytes than planned.
3848 Fix-up the length field of the packet. Use the same
3849 number of characters as before. */
3850 plen
+= hexnumnstr (plen
, (ULONGEST
) nr_bytes
, plenlen
);
3851 *plen
= ':'; /* overwrite \0 from hexnumnstr() */
3854 case PACKET_DISABLE
:
3855 /* Normal mode: Send target system values byte by byte, in
3856 increasing byte addresses. Each byte is encoded as a two hex
3858 nr_bytes
= bin2hex (myaddr
, p
, todo
);
3861 case PACKET_SUPPORT_UNKNOWN
:
3862 internal_error (__FILE__
, __LINE__
,
3863 "remote_write_bytes: bad internal state");
3865 internal_error (__FILE__
, __LINE__
, "bad switch");
3868 putpkt_binary (buf
, (int) (p
- buf
));
3869 getpkt (buf
, sizeof_buf
, 0);
3873 /* There is no correspondance between what the remote protocol
3874 uses for errors and errno codes. We would like a cleaner way
3875 of representing errors (big enough to include errno codes,
3876 bfd_error codes, and others). But for now just return EIO. */
3881 /* Return NR_BYTES, not TODO, in case escape chars caused us to send fewer
3882 bytes than we'd planned. */
3886 /* Read memory data directly from the remote machine.
3887 This does not use the data cache; the data cache uses this.
3888 MEMADDR is the address in the remote memory space.
3889 MYADDR is the address of the buffer in our space.
3890 LEN is the number of bytes.
3892 Returns number of bytes transferred, or 0 for error. */
3894 /* NOTE: cagney/1999-10-18: This function (and its siblings in other
3895 remote targets) shouldn't attempt to read the entire buffer.
3896 Instead it should read a single packet worth of data and then
3897 return the byte size of that packet to the caller. The caller (its
3898 caller and its callers caller ;-) already contains code for
3899 handling partial reads. */
3902 remote_read_bytes (CORE_ADDR memaddr
, char *myaddr
, int len
)
3905 int max_buf_size
; /* Max size of packet output buffer */
3909 /* Create a buffer big enough for this packet. */
3910 max_buf_size
= get_memory_read_packet_size ();
3911 sizeof_buf
= max_buf_size
+ 1; /* Space for trailing NUL */
3912 buf
= alloca (sizeof_buf
);
3921 todo
= min (len
, max_buf_size
/ 2); /* num bytes that will fit */
3923 /* construct "m"<memaddr>","<len>" */
3924 /* sprintf (buf, "m%lx,%x", (unsigned long) memaddr, todo); */
3925 memaddr
= remote_address_masked (memaddr
);
3928 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
3930 p
+= hexnumstr (p
, (ULONGEST
) todo
);
3934 getpkt (buf
, sizeof_buf
, 0);
3937 && isxdigit (buf
[1]) && isxdigit (buf
[2])
3940 /* There is no correspondance between what the remote protocol uses
3941 for errors and errno codes. We would like a cleaner way of
3942 representing errors (big enough to include errno codes, bfd_error
3943 codes, and others). But for now just return EIO. */
3948 /* Reply describes memory byte by byte,
3949 each byte encoded as two hex characters. */
3952 if ((i
= hex2bin (p
, myaddr
, todo
)) < todo
)
3954 /* Reply is short. This means that we were able to read
3955 only part of what we wanted to. */
3956 return i
+ (origlen
- len
);
3965 /* Read or write LEN bytes from inferior memory at MEMADDR,
3966 transferring to or from debugger address BUFFER. Write to inferior if
3967 SHOULD_WRITE is nonzero. Returns length of data written or read; 0
3968 for error. TARGET is unused. */
3972 remote_xfer_memory (CORE_ADDR mem_addr
, char *buffer
, int mem_len
,
3973 int should_write
, struct mem_attrib
*attrib
,
3974 struct target_ops
*target
)
3976 CORE_ADDR targ_addr
;
3980 /* Should this be the selected frame? */
3981 gdbarch_remote_translate_xfer_address (current_gdbarch
, current_regcache
,
3983 &targ_addr
, &targ_len
);
3988 res
= remote_write_bytes (targ_addr
, buffer
, targ_len
);
3990 res
= remote_read_bytes (targ_addr
, buffer
, targ_len
);
3997 /* Enable after 4.12. */
4000 remote_search (int len
, char *data
, char *mask
, CORE_ADDR startaddr
,
4001 int increment
, CORE_ADDR lorange
, CORE_ADDR hirange
,
4002 CORE_ADDR
*addr_found
, char *data_found
)
4004 if (increment
== -4 && len
== 4)
4006 long mask_long
, data_long
;
4007 long data_found_long
;
4008 CORE_ADDR addr_we_found
;
4009 char *buf
= alloca (rs
->remote_packet_size
);
4010 long returned_long
[2];
4013 mask_long
= extract_unsigned_integer (mask
, len
);
4014 data_long
= extract_unsigned_integer (data
, len
);
4015 sprintf (buf
, "t%x:%x,%x", startaddr
, data_long
, mask_long
);
4017 getpkt (buf
, (rs
->remote_packet_size
), 0);
4020 /* The stub doesn't support the 't' request. We might want to
4021 remember this fact, but on the other hand the stub could be
4022 switched on us. Maybe we should remember it only until
4023 the next "target remote". */
4024 generic_search (len
, data
, mask
, startaddr
, increment
, lorange
,
4025 hirange
, addr_found
, data_found
);
4030 /* There is no correspondance between what the remote protocol uses
4031 for errors and errno codes. We would like a cleaner way of
4032 representing errors (big enough to include errno codes, bfd_error
4033 codes, and others). But for now just use EIO. */
4034 memory_error (EIO
, startaddr
);
4037 while (*p
!= '\0' && *p
!= ',')
4038 addr_we_found
= (addr_we_found
<< 4) + fromhex (*p
++);
4040 error ("Protocol error: short return for search");
4042 data_found_long
= 0;
4043 while (*p
!= '\0' && *p
!= ',')
4044 data_found_long
= (data_found_long
<< 4) + fromhex (*p
++);
4045 /* Ignore anything after this comma, for future extensions. */
4047 if (addr_we_found
< lorange
|| addr_we_found
>= hirange
)
4053 *addr_found
= addr_we_found
;
4054 *data_found
= store_unsigned_integer (data_we_found
, len
);
4057 generic_search (len
, data
, mask
, startaddr
, increment
, lorange
,
4058 hirange
, addr_found
, data_found
);
4063 remote_files_info (struct target_ops
*ignore
)
4065 puts_filtered ("Debugging a target over a serial line.\n");
4068 /* Stuff for dealing with the packets which are part of this protocol.
4069 See comment at top of file for details. */
4071 /* Read a single character from the remote end, masking it down to 7 bits. */
4074 readchar (int timeout
)
4078 ch
= serial_readchar (remote_desc
, timeout
);
4083 switch ((enum serial_rc
) ch
)
4086 target_mourn_inferior ();
4087 error ("Remote connection closed");
4090 perror_with_name ("Remote communication error");
4092 case SERIAL_TIMEOUT
:
4098 /* Send the command in BUF to the remote machine, and read the reply
4099 into BUF. Report an error if we get an error reply. */
4102 remote_send (char *buf
,
4106 getpkt (buf
, sizeof_buf
, 0);
4109 error ("Remote failure reply: %s", buf
);
4112 /* Display a null-terminated packet on stdout, for debugging, using C
4116 print_packet (char *buf
)
4118 puts_filtered ("\"");
4119 fputstr_filtered (buf
, '"', gdb_stdout
);
4120 puts_filtered ("\"");
4126 return putpkt_binary (buf
, strlen (buf
));
4129 /* Send a packet to the remote machine, with error checking. The data
4130 of the packet is in BUF. The string in BUF can be at most (rs->remote_packet_size) - 5
4131 to account for the $, # and checksum, and for a possible /0 if we are
4132 debugging (remote_debug) and want to print the sent packet as a string */
4135 putpkt_binary (char *buf
, int cnt
)
4137 struct remote_state
*rs
= get_remote_state ();
4139 unsigned char csum
= 0;
4140 char *buf2
= alloca (cnt
+ 6);
4141 long sizeof_junkbuf
= (rs
->remote_packet_size
);
4142 char *junkbuf
= alloca (sizeof_junkbuf
);
4148 /* Copy the packet into buffer BUF2, encapsulating it
4149 and giving it a checksum. */
4154 for (i
= 0; i
< cnt
; i
++)
4160 *p
++ = tohex ((csum
>> 4) & 0xf);
4161 *p
++ = tohex (csum
& 0xf);
4163 /* Send it over and over until we get a positive ack. */
4167 int started_error_output
= 0;
4172 fprintf_unfiltered (gdb_stdlog
, "Sending packet: ");
4173 fputstrn_unfiltered (buf2
, p
- buf2
, 0, gdb_stdlog
);
4174 fprintf_unfiltered (gdb_stdlog
, "...");
4175 gdb_flush (gdb_stdlog
);
4177 if (serial_write (remote_desc
, buf2
, p
- buf2
))
4178 perror_with_name ("putpkt: write failed");
4180 /* read until either a timeout occurs (-2) or '+' is read */
4183 ch
= readchar (remote_timeout
);
4191 case SERIAL_TIMEOUT
:
4193 if (started_error_output
)
4195 putchar_unfiltered ('\n');
4196 started_error_output
= 0;
4205 fprintf_unfiltered (gdb_stdlog
, "Ack\n");
4209 fprintf_unfiltered (gdb_stdlog
, "Nak\n");
4210 case SERIAL_TIMEOUT
:
4214 break; /* Retransmit buffer */
4218 fprintf_unfiltered (gdb_stdlog
, "Packet instead of Ack, ignoring it\n");
4219 /* It's probably an old response, and we're out of sync.
4220 Just gobble up the packet and ignore it. */
4221 read_frame (junkbuf
, sizeof_junkbuf
);
4222 continue; /* Now, go look for + */
4227 if (!started_error_output
)
4229 started_error_output
= 1;
4230 fprintf_unfiltered (gdb_stdlog
, "putpkt: Junk: ");
4232 fputc_unfiltered (ch
& 0177, gdb_stdlog
);
4236 break; /* Here to retransmit */
4240 /* This is wrong. If doing a long backtrace, the user should be
4241 able to get out next time we call QUIT, without anything as
4242 violent as interrupt_query. If we want to provide a way out of
4243 here without getting to the next QUIT, it should be based on
4244 hitting ^C twice as in remote_wait. */
4254 static int remote_cisco_mode
;
4256 /* Come here after finding the start of the frame. Collect the rest
4257 into BUF, verifying the checksum, length, and handling run-length
4258 compression. No more than sizeof_buf-1 characters are read so that
4259 the buffer can be NUL terminated.
4261 Returns -1 on error, number of characters in buffer (ignoring the
4262 trailing NULL) on success. (could be extended to return one of the
4263 SERIAL status indications). */
4266 read_frame (char *buf
,
4278 /* ASSERT (bc < sizeof_buf - 1) - space for trailing NUL */
4279 c
= readchar (remote_timeout
);
4282 case SERIAL_TIMEOUT
:
4284 fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog
);
4288 fputs_filtered ("Saw new packet start in middle of old one\n",
4290 return -1; /* Start a new packet, count retries */
4293 unsigned char pktcsum
;
4299 check_0
= readchar (remote_timeout
);
4301 check_1
= readchar (remote_timeout
);
4303 if (check_0
== SERIAL_TIMEOUT
|| check_1
== SERIAL_TIMEOUT
)
4306 fputs_filtered ("Timeout in checksum, retrying\n", gdb_stdlog
);
4309 else if (check_0
< 0 || check_1
< 0)
4312 fputs_filtered ("Communication error in checksum\n", gdb_stdlog
);
4316 pktcsum
= (fromhex (check_0
) << 4) | fromhex (check_1
);
4317 if (csum
== pktcsum
)
4322 fprintf_filtered (gdb_stdlog
,
4323 "Bad checksum, sentsum=0x%x, csum=0x%x, buf=",
4325 fputs_filtered (buf
, gdb_stdlog
);
4326 fputs_filtered ("\n", gdb_stdlog
);
4328 /* Number of characters in buffer ignoring trailing
4332 case '*': /* Run length encoding */
4337 if (remote_cisco_mode
== 0)
4339 c
= readchar (remote_timeout
);
4341 repeat
= c
- ' ' + 3; /* Compute repeat count */
4345 /* Cisco's run-length encoding variant uses two
4346 hex chars to represent the repeat count. */
4348 c
= readchar (remote_timeout
);
4350 repeat
= fromhex (c
) << 4;
4351 c
= readchar (remote_timeout
);
4353 repeat
+= fromhex (c
);
4356 /* The character before ``*'' is repeated. */
4358 if (repeat
> 0 && repeat
<= 255
4360 && bc
+ repeat
- 1 < sizeof_buf
- 1)
4362 memset (&buf
[bc
], buf
[bc
- 1], repeat
);
4368 printf_filtered ("Repeat count %d too large for buffer: ", repeat
);
4369 puts_filtered (buf
);
4370 puts_filtered ("\n");
4374 if (bc
< sizeof_buf
- 1)
4382 puts_filtered ("Remote packet too long: ");
4383 puts_filtered (buf
);
4384 puts_filtered ("\n");
4391 /* Read a packet from the remote machine, with error checking, and
4392 store it in BUF. If FOREVER, wait forever rather than timing out;
4393 this is used (in synchronous mode) to wait for a target that is is
4394 executing user code to stop. */
4395 /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we
4396 don't have to change all the calls to getpkt to deal with the
4397 return value, because at the moment I don't know what the right
4398 thing to do it for those. */
4406 timed_out
= getpkt_sane (buf
, sizeof_buf
, forever
);
4410 /* Read a packet from the remote machine, with error checking, and
4411 store it in BUF. If FOREVER, wait forever rather than timing out;
4412 this is used (in synchronous mode) to wait for a target that is is
4413 executing user code to stop. If FOREVER == 0, this function is
4414 allowed to time out gracefully and return an indication of this to
4417 getpkt_sane (char *buf
,
4426 strcpy (buf
, "timeout");
4430 timeout
= watchdog
> 0 ? watchdog
: -1;
4434 timeout
= remote_timeout
;
4438 for (tries
= 1; tries
<= MAX_TRIES
; tries
++)
4440 /* This can loop forever if the remote side sends us characters
4441 continuously, but if it pauses, we'll get a zero from readchar
4442 because of timeout. Then we'll count that as a retry. */
4444 /* Note that we will only wait forever prior to the start of a packet.
4445 After that, we expect characters to arrive at a brisk pace. They
4446 should show up within remote_timeout intervals. */
4450 c
= readchar (timeout
);
4452 if (c
== SERIAL_TIMEOUT
)
4454 if (forever
) /* Watchdog went off? Kill the target. */
4457 target_mourn_inferior ();
4458 error ("Watchdog has expired. Target detached.\n");
4461 fputs_filtered ("Timed out.\n", gdb_stdlog
);
4467 /* We've found the start of a packet, now collect the data. */
4469 val
= read_frame (buf
, sizeof_buf
);
4475 fprintf_unfiltered (gdb_stdlog
, "Packet received: ");
4476 fputstr_unfiltered (buf
, 0, gdb_stdlog
);
4477 fprintf_unfiltered (gdb_stdlog
, "\n");
4479 serial_write (remote_desc
, "+", 1);
4483 /* Try the whole thing again. */
4485 serial_write (remote_desc
, "-", 1);
4488 /* We have tried hard enough, and just can't receive the packet. Give up. */
4490 printf_unfiltered ("Ignoring packet error, continuing...\n");
4491 serial_write (remote_desc
, "+", 1);
4498 /* For some mysterious reason, wait_for_inferior calls kill instead of
4499 mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */
4503 target_mourn_inferior ();
4507 /* Use catch_errors so the user can quit from gdb even when we aren't on
4508 speaking terms with the remote system. */
4509 catch_errors ((catch_errors_ftype
*) putpkt
, "k", "", RETURN_MASK_ERROR
);
4511 /* Don't wait for it to die. I'm not really sure it matters whether
4512 we do or not. For the existing stubs, kill is a noop. */
4513 target_mourn_inferior ();
4516 /* Async version of remote_kill. */
4518 remote_async_kill (void)
4520 /* Unregister the file descriptor from the event loop. */
4521 if (target_is_async_p ())
4522 serial_async (remote_desc
, NULL
, 0);
4524 /* For some mysterious reason, wait_for_inferior calls kill instead of
4525 mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */
4529 target_mourn_inferior ();
4533 /* Use catch_errors so the user can quit from gdb even when we aren't on
4534 speaking terms with the remote system. */
4535 catch_errors ((catch_errors_ftype
*) putpkt
, "k", "", RETURN_MASK_ERROR
);
4537 /* Don't wait for it to die. I'm not really sure it matters whether
4538 we do or not. For the existing stubs, kill is a noop. */
4539 target_mourn_inferior ();
4545 remote_mourn_1 (&remote_ops
);
4549 remote_async_mourn (void)
4551 remote_mourn_1 (&remote_async_ops
);
4555 extended_remote_mourn (void)
4557 /* We do _not_ want to mourn the target like this; this will
4558 remove the extended remote target from the target stack,
4559 and the next time the user says "run" it'll fail.
4561 FIXME: What is the right thing to do here? */
4563 remote_mourn_1 (&extended_remote_ops
);
4567 /* Worker function for remote_mourn. */
4569 remote_mourn_1 (struct target_ops
*target
)
4571 unpush_target (target
);
4572 generic_mourn_inferior ();
4575 /* In the extended protocol we want to be able to do things like
4576 "run" and have them basically work as expected. So we need
4577 a special create_inferior function.
4579 FIXME: One day add support for changing the exec file
4580 we're debugging, arguments and an environment. */
4583 extended_remote_create_inferior (char *exec_file
, char *args
, char **env
)
4585 /* Rip out the breakpoints; we'll reinsert them after restarting
4586 the remote server. */
4587 remove_breakpoints ();
4589 /* Now restart the remote server. */
4590 extended_remote_restart ();
4592 /* Now put the breakpoints back in. This way we're safe if the
4593 restart function works via a unix fork on the remote side. */
4594 insert_breakpoints ();
4596 /* Clean up from the last time we were running. */
4597 clear_proceed_status ();
4599 /* Let the remote process run. */
4600 proceed (-1, TARGET_SIGNAL_0
, 0);
4603 /* Async version of extended_remote_create_inferior. */
4605 extended_remote_async_create_inferior (char *exec_file
, char *args
, char **env
)
4607 /* Rip out the breakpoints; we'll reinsert them after restarting
4608 the remote server. */
4609 remove_breakpoints ();
4611 /* If running asynchronously, register the target file descriptor
4612 with the event loop. */
4613 if (event_loop_p
&& target_can_async_p ())
4614 target_async (inferior_event_handler
, 0);
4616 /* Now restart the remote server. */
4617 extended_remote_restart ();
4619 /* Now put the breakpoints back in. This way we're safe if the
4620 restart function works via a unix fork on the remote side. */
4621 insert_breakpoints ();
4623 /* Clean up from the last time we were running. */
4624 clear_proceed_status ();
4626 /* Let the remote process run. */
4627 proceed (-1, TARGET_SIGNAL_0
, 0);
4631 /* On some machines, e.g. 68k, we may use a different breakpoint
4632 instruction than other targets; in those use
4633 DEPRECATED_REMOTE_BREAKPOINT instead of just BREAKPOINT_FROM_PC.
4634 Also, bi-endian targets may define
4635 DEPRECATED_LITTLE_REMOTE_BREAKPOINT and
4636 DEPRECATED_BIG_REMOTE_BREAKPOINT. If none of these are defined, we
4637 just call the standard routines that are in mem-break.c. */
4639 /* NOTE: cagney/2003-06-08: This is silly. A remote and simulator
4640 target should use an identical BREAKPOINT_FROM_PC. As for native,
4641 the ARCH-OS-tdep.c code can override the default. */
4643 #if defined (DEPRECATED_LITTLE_REMOTE_BREAKPOINT) && defined (DEPRECATED_BIG_REMOTE_BREAKPOINT) && !defined(DEPRECATED_REMOTE_BREAKPOINT)
4644 #define DEPRECATED_REMOTE_BREAKPOINT
4647 #ifdef DEPRECATED_REMOTE_BREAKPOINT
4649 /* If the target isn't bi-endian, just pretend it is. */
4650 #if !defined (DEPRECATED_LITTLE_REMOTE_BREAKPOINT) && !defined (DEPRECATED_BIG_REMOTE_BREAKPOINT)
4651 #define DEPRECATED_LITTLE_REMOTE_BREAKPOINT DEPRECATED_REMOTE_BREAKPOINT
4652 #define DEPRECATED_BIG_REMOTE_BREAKPOINT DEPRECATED_REMOTE_BREAKPOINT
4655 static unsigned char big_break_insn
[] = DEPRECATED_BIG_REMOTE_BREAKPOINT
;
4656 static unsigned char little_break_insn
[] = DEPRECATED_LITTLE_REMOTE_BREAKPOINT
;
4658 #endif /* DEPRECATED_REMOTE_BREAKPOINT */
4660 /* Insert a breakpoint on targets that don't have any better
4661 breakpoint support. We read the contents of the target location
4662 and stash it, then overwrite it with a breakpoint instruction.
4663 ADDR is the target location in the target machine. CONTENTS_CACHE
4664 is a pointer to memory allocated for saving the target contents.
4665 It is guaranteed by the caller to be long enough to save the number
4666 of bytes returned by BREAKPOINT_FROM_PC. */
4669 remote_insert_breakpoint (CORE_ADDR addr
, char *contents_cache
)
4671 struct remote_state
*rs
= get_remote_state ();
4672 #ifdef DEPRECATED_REMOTE_BREAKPOINT
4677 /* Try the "Z" s/w breakpoint packet if it is not already disabled.
4678 If it succeeds, then set the support to PACKET_ENABLE. If it
4679 fails, and the user has explicitly requested the Z support then
4680 report an error, otherwise, mark it disabled and go on. */
4682 if (remote_protocol_Z
[Z_PACKET_SOFTWARE_BP
].support
!= PACKET_DISABLE
)
4684 char *buf
= alloca (rs
->remote_packet_size
);
4687 addr
= remote_address_masked (addr
);
4691 p
+= hexnumstr (p
, (ULONGEST
) addr
);
4692 BREAKPOINT_FROM_PC (&addr
, &bp_size
);
4693 sprintf (p
, ",%d", bp_size
);
4696 getpkt (buf
, (rs
->remote_packet_size
), 0);
4698 switch (packet_ok (buf
, &remote_protocol_Z
[Z_PACKET_SOFTWARE_BP
]))
4704 case PACKET_UNKNOWN
:
4709 #ifdef DEPRECATED_REMOTE_BREAKPOINT
4710 val
= target_read_memory (addr
, contents_cache
, sizeof big_break_insn
);
4714 if (TARGET_BYTE_ORDER
== BFD_ENDIAN_BIG
)
4715 val
= target_write_memory (addr
, (char *) big_break_insn
,
4716 sizeof big_break_insn
);
4718 val
= target_write_memory (addr
, (char *) little_break_insn
,
4719 sizeof little_break_insn
);
4724 return memory_insert_breakpoint (addr
, contents_cache
);
4725 #endif /* DEPRECATED_REMOTE_BREAKPOINT */
4729 remote_remove_breakpoint (CORE_ADDR addr
, char *contents_cache
)
4731 struct remote_state
*rs
= get_remote_state ();
4734 if (remote_protocol_Z
[Z_PACKET_SOFTWARE_BP
].support
!= PACKET_DISABLE
)
4736 char *buf
= alloca (rs
->remote_packet_size
);
4743 addr
= remote_address_masked (addr
);
4744 p
+= hexnumstr (p
, (ULONGEST
) addr
);
4745 BREAKPOINT_FROM_PC (&addr
, &bp_size
);
4746 sprintf (p
, ",%d", bp_size
);
4749 getpkt (buf
, (rs
->remote_packet_size
), 0);
4751 return (buf
[0] == 'E');
4754 #ifdef DEPRECATED_REMOTE_BREAKPOINT
4755 return target_write_memory (addr
, contents_cache
, sizeof big_break_insn
);
4757 return memory_remove_breakpoint (addr
, contents_cache
);
4758 #endif /* DEPRECATED_REMOTE_BREAKPOINT */
4762 watchpoint_to_Z_packet (int type
)
4776 internal_error (__FILE__
, __LINE__
,
4777 "hw_bp_to_z: bad watchpoint type %d", type
);
4782 remote_insert_watchpoint (CORE_ADDR addr
, int len
, int type
)
4784 struct remote_state
*rs
= get_remote_state ();
4785 char *buf
= alloca (rs
->remote_packet_size
);
4787 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
4789 if (remote_protocol_Z
[packet
].support
== PACKET_DISABLE
)
4790 error ("Can't set hardware watchpoints without the '%s' (%s) packet\n",
4791 remote_protocol_Z
[packet
].name
,
4792 remote_protocol_Z
[packet
].title
);
4794 sprintf (buf
, "Z%x,", packet
);
4795 p
= strchr (buf
, '\0');
4796 addr
= remote_address_masked (addr
);
4797 p
+= hexnumstr (p
, (ULONGEST
) addr
);
4798 sprintf (p
, ",%x", len
);
4801 getpkt (buf
, (rs
->remote_packet_size
), 0);
4803 switch (packet_ok (buf
, &remote_protocol_Z
[packet
]))
4806 case PACKET_UNKNOWN
:
4811 internal_error (__FILE__
, __LINE__
,
4812 "remote_insert_watchpoint: reached end of function");
4817 remote_remove_watchpoint (CORE_ADDR addr
, int len
, int type
)
4819 struct remote_state
*rs
= get_remote_state ();
4820 char *buf
= alloca (rs
->remote_packet_size
);
4822 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
4824 if (remote_protocol_Z
[packet
].support
== PACKET_DISABLE
)
4825 error ("Can't clear hardware watchpoints without the '%s' (%s) packet\n",
4826 remote_protocol_Z
[packet
].name
,
4827 remote_protocol_Z
[packet
].title
);
4829 sprintf (buf
, "z%x,", packet
);
4830 p
= strchr (buf
, '\0');
4831 addr
= remote_address_masked (addr
);
4832 p
+= hexnumstr (p
, (ULONGEST
) addr
);
4833 sprintf (p
, ",%x", len
);
4835 getpkt (buf
, (rs
->remote_packet_size
), 0);
4837 switch (packet_ok (buf
, &remote_protocol_Z
[packet
]))
4840 case PACKET_UNKNOWN
:
4845 internal_error (__FILE__
, __LINE__
,
4846 "remote_remove_watchpoint: reached end of function");
4850 int remote_hw_watchpoint_limit
= -1;
4851 int remote_hw_breakpoint_limit
= -1;
4854 remote_check_watch_resources (int type
, int cnt
, int ot
)
4856 if (type
== bp_hardware_breakpoint
)
4858 if (remote_hw_breakpoint_limit
== 0)
4860 else if (remote_hw_breakpoint_limit
< 0)
4862 else if (cnt
<= remote_hw_breakpoint_limit
)
4867 if (remote_hw_watchpoint_limit
== 0)
4869 else if (remote_hw_watchpoint_limit
< 0)
4873 else if (cnt
<= remote_hw_watchpoint_limit
)
4880 remote_stopped_by_watchpoint (void)
4882 return remote_stopped_by_watchpoint_p
;
4886 remote_stopped_data_address (void)
4888 if (remote_stopped_by_watchpoint ())
4889 return remote_watch_data_address
;
4890 return (CORE_ADDR
)0;
4895 remote_insert_hw_breakpoint (CORE_ADDR addr
, char *shadow
)
4898 struct remote_state
*rs
= get_remote_state ();
4899 char *buf
= alloca (rs
->remote_packet_size
);
4902 /* The length field should be set to the size of a breakpoint
4905 BREAKPOINT_FROM_PC (&addr
, &len
);
4907 if (remote_protocol_Z
[Z_PACKET_HARDWARE_BP
].support
== PACKET_DISABLE
)
4908 error ("Can't set hardware breakpoint without the '%s' (%s) packet\n",
4909 remote_protocol_Z
[Z_PACKET_HARDWARE_BP
].name
,
4910 remote_protocol_Z
[Z_PACKET_HARDWARE_BP
].title
);
4916 addr
= remote_address_masked (addr
);
4917 p
+= hexnumstr (p
, (ULONGEST
) addr
);
4918 sprintf (p
, ",%x", len
);
4921 getpkt (buf
, (rs
->remote_packet_size
), 0);
4923 switch (packet_ok (buf
, &remote_protocol_Z
[Z_PACKET_HARDWARE_BP
]))
4926 case PACKET_UNKNOWN
:
4931 internal_error (__FILE__
, __LINE__
,
4932 "remote_insert_hw_breakpoint: reached end of function");
4937 remote_remove_hw_breakpoint (CORE_ADDR addr
, char *shadow
)
4940 struct remote_state
*rs
= get_remote_state ();
4941 char *buf
= alloca (rs
->remote_packet_size
);
4944 /* The length field should be set to the size of a breakpoint
4947 BREAKPOINT_FROM_PC (&addr
, &len
);
4949 if (remote_protocol_Z
[Z_PACKET_HARDWARE_BP
].support
== PACKET_DISABLE
)
4950 error ("Can't clear hardware breakpoint without the '%s' (%s) packet\n",
4951 remote_protocol_Z
[Z_PACKET_HARDWARE_BP
].name
,
4952 remote_protocol_Z
[Z_PACKET_HARDWARE_BP
].title
);
4958 addr
= remote_address_masked (addr
);
4959 p
+= hexnumstr (p
, (ULONGEST
) addr
);
4960 sprintf (p
, ",%x", len
);
4963 getpkt (buf
, (rs
->remote_packet_size
), 0);
4965 switch (packet_ok (buf
, &remote_protocol_Z
[Z_PACKET_HARDWARE_BP
]))
4968 case PACKET_UNKNOWN
:
4973 internal_error (__FILE__
, __LINE__
,
4974 "remote_remove_hw_breakpoint: reached end of function");
4977 /* Some targets are only capable of doing downloads, and afterwards
4978 they switch to the remote serial protocol. This function provides
4979 a clean way to get from the download target to the remote target.
4980 It's basically just a wrapper so that we don't have to expose any
4981 of the internal workings of remote.c.
4983 Prior to calling this routine, you should shutdown the current
4984 target code, else you will get the "A program is being debugged
4985 already..." message. Usually a call to pop_target() suffices. */
4988 push_remote_target (char *name
, int from_tty
)
4990 printf_filtered ("Switching to remote protocol\n");
4991 remote_open (name
, from_tty
);
4994 /* Table used by the crc32 function to calcuate the checksum. */
4996 static unsigned long crc32_table
[256] =
4999 static unsigned long
5000 crc32 (unsigned char *buf
, int len
, unsigned int crc
)
5002 if (!crc32_table
[1])
5004 /* Initialize the CRC table and the decoding table. */
5008 for (i
= 0; i
< 256; i
++)
5010 for (c
= i
<< 24, j
= 8; j
> 0; --j
)
5011 c
= c
& 0x80000000 ? (c
<< 1) ^ 0x04c11db7 : (c
<< 1);
5018 crc
= (crc
<< 8) ^ crc32_table
[((crc
>> 24) ^ *buf
) & 255];
5024 /* compare-sections command
5026 With no arguments, compares each loadable section in the exec bfd
5027 with the same memory range on the target, and reports mismatches.
5028 Useful for verifying the image on the target against the exec file.
5029 Depends on the target understanding the new "qCRC:" request. */
5031 /* FIXME: cagney/1999-10-26: This command should be broken down into a
5032 target method (target verify memory) and generic version of the
5033 actual command. This will allow other high-level code (especially
5034 generic_load()) to make use of this target functionality. */
5037 compare_sections_command (char *args
, int from_tty
)
5039 struct remote_state
*rs
= get_remote_state ();
5041 unsigned long host_crc
, target_crc
;
5042 extern bfd
*exec_bfd
;
5043 struct cleanup
*old_chain
;
5046 const char *sectname
;
5047 char *buf
= alloca (rs
->remote_packet_size
);
5054 error ("command cannot be used without an exec file");
5055 if (!current_target
.to_shortname
||
5056 strcmp (current_target
.to_shortname
, "remote") != 0)
5057 error ("command can only be used with remote target");
5059 for (s
= exec_bfd
->sections
; s
; s
= s
->next
)
5061 if (!(s
->flags
& SEC_LOAD
))
5062 continue; /* skip non-loadable section */
5064 size
= bfd_get_section_size_before_reloc (s
);
5066 continue; /* skip zero-length section */
5068 sectname
= bfd_get_section_name (exec_bfd
, s
);
5069 if (args
&& strcmp (args
, sectname
) != 0)
5070 continue; /* not the section selected by user */
5072 matched
= 1; /* do this section */
5074 /* FIXME: assumes lma can fit into long */
5075 sprintf (buf
, "qCRC:%lx,%lx", (long) lma
, (long) size
);
5078 /* be clever; compute the host_crc before waiting for target reply */
5079 sectdata
= xmalloc (size
);
5080 old_chain
= make_cleanup (xfree
, sectdata
);
5081 bfd_get_section_contents (exec_bfd
, s
, sectdata
, 0, size
);
5082 host_crc
= crc32 ((unsigned char *) sectdata
, size
, 0xffffffff);
5084 getpkt (buf
, (rs
->remote_packet_size
), 0);
5086 error ("target memory fault, section %s, range 0x%s -- 0x%s",
5087 sectname
, paddr (lma
), paddr (lma
+ size
));
5089 error ("remote target does not support this operation");
5091 for (target_crc
= 0, tmp
= &buf
[1]; *tmp
; tmp
++)
5092 target_crc
= target_crc
* 16 + fromhex (*tmp
);
5094 printf_filtered ("Section %s, range 0x%s -- 0x%s: ",
5095 sectname
, paddr (lma
), paddr (lma
+ size
));
5096 if (host_crc
== target_crc
)
5097 printf_filtered ("matched.\n");
5100 printf_filtered ("MIS-MATCHED!\n");
5104 do_cleanups (old_chain
);
5107 warning ("One or more sections of the remote executable does not match\n\
5108 the loaded file\n");
5109 if (args
&& !matched
)
5110 printf_filtered ("No loaded section named '%s'.\n", args
);
5114 remote_query (int query_type
, char *buf
, char *outbuf
, int *bufsiz
)
5116 struct remote_state
*rs
= get_remote_state ();
5118 char *buf2
= alloca (rs
->remote_packet_size
);
5119 char *p2
= &buf2
[0];
5122 error ("null pointer to remote bufer size specified");
5124 /* minimum outbuf size is (rs->remote_packet_size) - if bufsiz is not large enough let
5125 the caller know and return what the minimum size is */
5126 /* Note: a zero bufsiz can be used to query the minimum buffer size */
5127 if (*bufsiz
< (rs
->remote_packet_size
))
5129 *bufsiz
= (rs
->remote_packet_size
);
5133 /* except for querying the minimum buffer size, target must be open */
5135 error ("remote query is only available after target open");
5137 /* we only take uppercase letters as query types, at least for now */
5138 if ((query_type
< 'A') || (query_type
> 'Z'))
5139 error ("invalid remote query type");
5142 error ("null remote query specified");
5145 error ("remote query requires a buffer to receive data");
5152 /* we used one buffer char for the remote protocol q command and another
5153 for the query type. As the remote protocol encapsulation uses 4 chars
5154 plus one extra in case we are debugging (remote_debug),
5155 we have PBUFZIZ - 7 left to pack the query string */
5157 while (buf
[i
] && (i
< ((rs
->remote_packet_size
) - 8)))
5159 /* bad caller may have sent forbidden characters */
5160 if ((!isprint (buf
[i
])) || (buf
[i
] == '$') || (buf
[i
] == '#'))
5161 error ("illegal characters in query string");
5169 error ("query larger than available buffer");
5175 getpkt (outbuf
, *bufsiz
, 0);
5181 remote_rcmd (char *command
,
5182 struct ui_file
*outbuf
)
5184 struct remote_state
*rs
= get_remote_state ();
5186 char *buf
= alloca (rs
->remote_packet_size
);
5190 error ("remote rcmd is only available after target open");
5192 /* Send a NULL command across as an empty command */
5193 if (command
== NULL
)
5196 /* The query prefix */
5197 strcpy (buf
, "qRcmd,");
5198 p
= strchr (buf
, '\0');
5200 if ((strlen (buf
) + strlen (command
) * 2 + 8/*misc*/) > (rs
->remote_packet_size
))
5201 error ("\"monitor\" command ``%s'' is too long\n", command
);
5203 /* Encode the actual command */
5204 bin2hex (command
, p
, 0);
5206 if (putpkt (buf
) < 0)
5207 error ("Communication problem with target\n");
5209 /* get/display the response */
5212 /* XXX - see also tracepoint.c:remote_get_noisy_reply() */
5214 getpkt (buf
, (rs
->remote_packet_size
), 0);
5216 error ("Target does not support this command\n");
5217 if (buf
[0] == 'O' && buf
[1] != 'K')
5219 remote_console_output (buf
+ 1); /* 'O' message from stub */
5222 if (strcmp (buf
, "OK") == 0)
5224 if (strlen (buf
) == 3 && buf
[0] == 'E'
5225 && isdigit (buf
[1]) && isdigit (buf
[2]))
5227 error ("Protocol error with Rcmd");
5229 for (p
= buf
; p
[0] != '\0' && p
[1] != '\0'; p
+= 2)
5231 char c
= (fromhex (p
[0]) << 4) + fromhex (p
[1]);
5232 fputc_unfiltered (c
, outbuf
);
5239 packet_command (char *args
, int from_tty
)
5241 struct remote_state
*rs
= get_remote_state ();
5242 char *buf
= alloca (rs
->remote_packet_size
);
5245 error ("command can only be used with remote target");
5248 error ("remote-packet command requires packet text as argument");
5250 puts_filtered ("sending: ");
5251 print_packet (args
);
5252 puts_filtered ("\n");
5255 getpkt (buf
, (rs
->remote_packet_size
), 0);
5256 puts_filtered ("received: ");
5258 puts_filtered ("\n");
5262 /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------------- */
5264 static void display_thread_info (struct gdb_ext_thread_info
*info
);
5266 static void threadset_test_cmd (char *cmd
, int tty
);
5268 static void threadalive_test (char *cmd
, int tty
);
5270 static void threadlist_test_cmd (char *cmd
, int tty
);
5272 int get_and_display_threadinfo (threadref
* ref
);
5274 static void threadinfo_test_cmd (char *cmd
, int tty
);
5276 static int thread_display_step (threadref
* ref
, void *context
);
5278 static void threadlist_update_test_cmd (char *cmd
, int tty
);
5280 static void init_remote_threadtests (void);
5282 #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid */
5285 threadset_test_cmd (char *cmd
, int tty
)
5287 int sample_thread
= SAMPLE_THREAD
;
5289 printf_filtered ("Remote threadset test\n");
5290 set_thread (sample_thread
, 1);
5295 threadalive_test (char *cmd
, int tty
)
5297 int sample_thread
= SAMPLE_THREAD
;
5299 if (remote_thread_alive (pid_to_ptid (sample_thread
)))
5300 printf_filtered ("PASS: Thread alive test\n");
5302 printf_filtered ("FAIL: Thread alive test\n");
5305 void output_threadid (char *title
, threadref
* ref
);
5308 output_threadid (char *title
, threadref
*ref
)
5312 pack_threadid (&hexid
[0], ref
); /* Convert threead id into hex */
5314 printf_filtered ("%s %s\n", title
, (&hexid
[0]));
5318 threadlist_test_cmd (char *cmd
, int tty
)
5321 threadref nextthread
;
5322 int done
, result_count
;
5323 threadref threadlist
[3];
5325 printf_filtered ("Remote Threadlist test\n");
5326 if (!remote_get_threadlist (startflag
, &nextthread
, 3, &done
,
5327 &result_count
, &threadlist
[0]))
5328 printf_filtered ("FAIL: threadlist test\n");
5331 threadref
*scan
= threadlist
;
5332 threadref
*limit
= scan
+ result_count
;
5334 while (scan
< limit
)
5335 output_threadid (" thread ", scan
++);
5340 display_thread_info (struct gdb_ext_thread_info
*info
)
5342 output_threadid ("Threadid: ", &info
->threadid
);
5343 printf_filtered ("Name: %s\n ", info
->shortname
);
5344 printf_filtered ("State: %s\n", info
->display
);
5345 printf_filtered ("other: %s\n\n", info
->more_display
);
5349 get_and_display_threadinfo (threadref
*ref
)
5353 struct gdb_ext_thread_info threadinfo
;
5355 set
= TAG_THREADID
| TAG_EXISTS
| TAG_THREADNAME
5356 | TAG_MOREDISPLAY
| TAG_DISPLAY
;
5357 if (0 != (result
= remote_get_threadinfo (ref
, set
, &threadinfo
)))
5358 display_thread_info (&threadinfo
);
5363 threadinfo_test_cmd (char *cmd
, int tty
)
5365 int athread
= SAMPLE_THREAD
;
5369 int_to_threadref (&thread
, athread
);
5370 printf_filtered ("Remote Threadinfo test\n");
5371 if (!get_and_display_threadinfo (&thread
))
5372 printf_filtered ("FAIL cannot get thread info\n");
5376 thread_display_step (threadref
*ref
, void *context
)
5378 /* output_threadid(" threadstep ",ref); *//* simple test */
5379 return get_and_display_threadinfo (ref
);
5383 threadlist_update_test_cmd (char *cmd
, int tty
)
5385 printf_filtered ("Remote Threadlist update test\n");
5386 remote_threadlist_iterator (thread_display_step
, 0, CRAZY_MAX_THREADS
);
5390 init_remote_threadtests (void)
5392 add_com ("tlist", class_obscure
, threadlist_test_cmd
,
5393 "Fetch and print the remote list of thread identifiers, one pkt only");
5394 add_com ("tinfo", class_obscure
, threadinfo_test_cmd
,
5395 "Fetch and display info about one thread");
5396 add_com ("tset", class_obscure
, threadset_test_cmd
,
5397 "Test setting to a different thread");
5398 add_com ("tupd", class_obscure
, threadlist_update_test_cmd
,
5399 "Iterate through updating all remote thread info");
5400 add_com ("talive", class_obscure
, threadalive_test
,
5401 " Remote thread alive test ");
5406 /* Convert a thread ID to a string. Returns the string in a static
5410 remote_pid_to_str (ptid_t ptid
)
5412 static char buf
[30];
5414 sprintf (buf
, "Thread %d", PIDGET (ptid
));
5419 init_remote_ops (void)
5421 remote_ops
.to_shortname
= "remote";
5422 remote_ops
.to_longname
= "Remote serial target in gdb-specific protocol";
5424 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
5425 Specify the serial device it is connected to\n\
5426 (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).";
5427 remote_ops
.to_open
= remote_open
;
5428 remote_ops
.to_close
= remote_close
;
5429 remote_ops
.to_detach
= remote_detach
;
5430 remote_ops
.to_disconnect
= remote_disconnect
;
5431 remote_ops
.to_resume
= remote_resume
;
5432 remote_ops
.to_wait
= remote_wait
;
5433 remote_ops
.to_fetch_registers
= remote_fetch_registers
;
5434 remote_ops
.to_store_registers
= remote_store_registers
;
5435 remote_ops
.to_prepare_to_store
= remote_prepare_to_store
;
5436 remote_ops
.to_xfer_memory
= remote_xfer_memory
;
5437 remote_ops
.to_files_info
= remote_files_info
;
5438 remote_ops
.to_insert_breakpoint
= remote_insert_breakpoint
;
5439 remote_ops
.to_remove_breakpoint
= remote_remove_breakpoint
;
5440 remote_ops
.to_stopped_by_watchpoint
= remote_stopped_by_watchpoint
;
5441 remote_ops
.to_stopped_data_address
= remote_stopped_data_address
;
5442 remote_ops
.to_can_use_hw_breakpoint
= remote_check_watch_resources
;
5443 remote_ops
.to_insert_hw_breakpoint
= remote_insert_hw_breakpoint
;
5444 remote_ops
.to_remove_hw_breakpoint
= remote_remove_hw_breakpoint
;
5445 remote_ops
.to_insert_watchpoint
= remote_insert_watchpoint
;
5446 remote_ops
.to_remove_watchpoint
= remote_remove_watchpoint
;
5447 remote_ops
.to_kill
= remote_kill
;
5448 remote_ops
.to_load
= generic_load
;
5449 remote_ops
.to_mourn_inferior
= remote_mourn
;
5450 remote_ops
.to_thread_alive
= remote_thread_alive
;
5451 remote_ops
.to_find_new_threads
= remote_threads_info
;
5452 remote_ops
.to_pid_to_str
= remote_pid_to_str
;
5453 remote_ops
.to_extra_thread_info
= remote_threads_extra_info
;
5454 remote_ops
.to_stop
= remote_stop
;
5455 remote_ops
.to_query
= remote_query
;
5456 remote_ops
.to_rcmd
= remote_rcmd
;
5457 remote_ops
.to_stratum
= process_stratum
;
5458 remote_ops
.to_has_all_memory
= 1;
5459 remote_ops
.to_has_memory
= 1;
5460 remote_ops
.to_has_stack
= 1;
5461 remote_ops
.to_has_registers
= 1;
5462 remote_ops
.to_has_execution
= 1;
5463 remote_ops
.to_has_thread_control
= tc_schedlock
; /* can lock scheduler */
5464 remote_ops
.to_magic
= OPS_MAGIC
;
5467 /* Set up the extended remote vector by making a copy of the standard
5468 remote vector and adding to it. */
5471 init_extended_remote_ops (void)
5473 extended_remote_ops
= remote_ops
;
5475 extended_remote_ops
.to_shortname
= "extended-remote";
5476 extended_remote_ops
.to_longname
=
5477 "Extended remote serial target in gdb-specific protocol";
5478 extended_remote_ops
.to_doc
=
5479 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
5480 Specify the serial device it is connected to (e.g. /dev/ttya).",
5481 extended_remote_ops
.to_open
= extended_remote_open
;
5482 extended_remote_ops
.to_create_inferior
= extended_remote_create_inferior
;
5483 extended_remote_ops
.to_mourn_inferior
= extended_remote_mourn
;
5487 * Command: info remote-process
5489 * This implements Cisco's version of the "info proc" command.
5491 * This query allows the target stub to return an arbitrary string
5492 * (or strings) giving arbitrary information about the target process.
5493 * This is optional; the target stub isn't required to implement it.
5495 * Syntax: qfProcessInfo request first string
5496 * qsProcessInfo request subsequent string
5497 * reply: 'O'<hex-encoded-string>
5498 * 'l' last reply (empty)
5502 remote_info_process (char *args
, int from_tty
)
5504 struct remote_state
*rs
= get_remote_state ();
5505 char *buf
= alloca (rs
->remote_packet_size
);
5507 if (remote_desc
== 0)
5508 error ("Command can only be used when connected to the remote target.");
5510 putpkt ("qfProcessInfo");
5511 getpkt (buf
, (rs
->remote_packet_size
), 0);
5513 return; /* Silently: target does not support this feature. */
5516 error ("info proc: target error.");
5518 while (buf
[0] == 'O') /* Capitol-O packet */
5520 remote_console_output (&buf
[1]);
5521 putpkt ("qsProcessInfo");
5522 getpkt (buf
, (rs
->remote_packet_size
), 0);
5531 remote_cisco_open (char *name
, int from_tty
)
5535 error ("To open a remote debug connection, you need to specify what \n"
5536 "device is attached to the remote system (e.g. host:port).");
5538 /* See FIXME above */
5539 wait_forever_enabled_p
= 1;
5541 target_preopen (from_tty
);
5543 unpush_target (&remote_cisco_ops
);
5545 remote_desc
= remote_serial_open (name
);
5547 perror_with_name (name
);
5550 * If a baud rate was specified on the gdb command line it will
5551 * be greater than the initial value of -1. If it is, use it otherwise
5555 baud_rate
= (baud_rate
> 0) ? baud_rate
: 9600;
5556 if (serial_setbaudrate (remote_desc
, baud_rate
))
5558 serial_close (remote_desc
);
5559 perror_with_name (name
);
5562 serial_raw (remote_desc
);
5564 /* If there is something sitting in the buffer we might take it as a
5565 response to a command, which would be bad. */
5566 serial_flush_input (remote_desc
);
5570 puts_filtered ("Remote debugging using ");
5571 puts_filtered (name
);
5572 puts_filtered ("\n");
5575 remote_cisco_mode
= 1;
5577 push_target (&remote_cisco_ops
); /* Switch to using cisco target now */
5579 init_all_packet_configs ();
5581 general_thread
= -2;
5582 continue_thread
= -2;
5584 /* Probe for ability to use "ThreadInfo" query, as required. */
5585 use_threadinfo_query
= 1;
5586 use_threadextra_query
= 1;
5588 /* Without this, some commands which require an active target (such
5589 as kill) won't work. This variable serves (at least) double duty
5590 as both the pid of the target process (if it has such), and as a
5591 flag indicating that a target is active. These functions should
5592 be split out into seperate variables, especially since GDB will
5593 someday have a notion of debugging several processes. */
5594 inferior_ptid
= pid_to_ptid (MAGIC_NULL_PID
);
5596 /* Start the remote connection; if error, discard this target. See
5597 the comments in remote_open_1() for further details such as the
5598 need to re-throw the exception. */
5599 ex
= catch_exceptions (uiout
,
5600 remote_start_remote_dummy
, NULL
,
5601 "Couldn't establish connection to remote"
5607 throw_exception (ex
);
5612 remote_cisco_close (int quitting
)
5614 remote_cisco_mode
= 0;
5615 remote_close (quitting
);
5619 remote_cisco_mourn (void)
5621 remote_mourn_1 (&remote_cisco_ops
);
5633 /* Shared between readsocket() and readtty(). The size is arbitrary,
5634 however all targets are known to support a 400 character packet. */
5635 static char tty_input
[400];
5637 static int escape_count
;
5638 static int echo_check
;
5639 extern int quit_flag
;
5646 /* Loop until the socket doesn't have any more data */
5648 while ((data
= readchar (0)) >= 0)
5650 /* Check for the escape sequence */
5653 /* If this is the fourth escape, get out */
5654 if (++escape_count
== 4)
5659 { /* This is a '|', but not the fourth in a row.
5660 Continue without echoing it. If it isn't actually
5661 one of four in a row, it'll be echoed later. */
5668 /* Ensure any pending '|'s are flushed. */
5670 for (; escape_count
> 0; escape_count
--)
5674 if (data
== '\r') /* If this is a return character, */
5675 continue; /* - just supress it. */
5677 if (echo_check
!= -1) /* Check for echo of user input. */
5679 if (tty_input
[echo_check
] == data
)
5681 gdb_assert (echo_check
<= sizeof (tty_input
));
5682 echo_check
++; /* Character matched user input: */
5683 continue; /* Continue without echoing it. */
5685 else if ((data
== '\n') && (tty_input
[echo_check
] == '\r'))
5686 { /* End of the line (and of echo checking). */
5687 echo_check
= -1; /* No more echo supression */
5688 continue; /* Continue without echoing. */
5691 { /* Failed check for echo of user input.
5692 We now have some suppressed output to flush! */
5695 for (j
= 0; j
< echo_check
; j
++)
5696 putchar (tty_input
[j
]);
5700 putchar (data
); /* Default case: output the char. */
5703 if (data
== SERIAL_TIMEOUT
) /* Timeout returned from readchar. */
5704 return READ_MORE
; /* Try to read some more */
5706 return FATAL_ERROR
; /* Trouble, bail out */
5714 /* First, read a buffer full from the terminal */
5715 tty_bytecount
= read (fileno (stdin
), tty_input
, sizeof (tty_input
) - 1);
5716 if (tty_bytecount
== -1)
5718 perror ("readtty: read failed");
5722 /* Remove a quoted newline. */
5723 if (tty_input
[tty_bytecount
- 1] == '\n' &&
5724 tty_input
[tty_bytecount
- 2] == '\\') /* line ending in backslash */
5726 tty_input
[--tty_bytecount
] = 0; /* remove newline */
5727 tty_input
[--tty_bytecount
] = 0; /* remove backslash */
5730 /* Turn trailing newlines into returns */
5731 if (tty_input
[tty_bytecount
- 1] == '\n')
5732 tty_input
[tty_bytecount
- 1] = '\r';
5734 /* If the line consists of a ~, enter debugging mode. */
5735 if ((tty_input
[0] == '~') && (tty_bytecount
== 2))
5738 /* Make this a zero terminated string and write it out */
5739 tty_input
[tty_bytecount
] = 0;
5740 if (serial_write (remote_desc
, tty_input
, tty_bytecount
))
5742 perror_with_name ("readtty: write failed");
5752 fd_set input
; /* file descriptors for select */
5753 int tablesize
; /* max number of FDs for select */
5760 tablesize
= 8 * sizeof (input
);
5764 /* Check for anything from our socket - doesn't block. Note that
5765 this must be done *before* the select as there may be
5766 buffered I/O waiting to be processed. */
5768 if ((status
= readsocket ()) == FATAL_ERROR
)
5770 error ("Debugging terminated by communications error");
5772 else if (status
!= READ_MORE
)
5777 fflush (stdout
); /* Flush output before blocking */
5779 /* Now block on more socket input or TTY input */
5782 FD_SET (fileno (stdin
), &input
);
5783 FD_SET (deprecated_serial_fd (remote_desc
), &input
);
5785 status
= select (tablesize
, &input
, 0, 0, 0);
5786 if ((status
== -1) && (errno
!= EINTR
))
5788 error ("Communications error on select %d", errno
);
5791 /* Handle Control-C typed */
5795 if ((++quit_count
) == 2)
5797 if (query ("Interrupt GDB? "))
5799 printf_filtered ("Interrupted by user.\n");
5800 throw_exception (RETURN_QUIT
);
5807 serial_send_break (remote_desc
);
5809 serial_write (remote_desc
, "\003", 1);
5814 /* Handle console input */
5816 if (FD_ISSET (fileno (stdin
), &input
))
5820 status
= readtty ();
5821 if (status
== READ_MORE
)
5824 return status
; /* telnet session ended */
5830 remote_cisco_wait (ptid_t ptid
, struct target_waitstatus
*status
)
5832 if (minitelnet () != ENTER_DEBUG
)
5834 error ("Debugging session terminated by protocol error");
5837 return remote_wait (ptid
, status
);
5841 init_remote_cisco_ops (void)
5843 remote_cisco_ops
.to_shortname
= "cisco";
5844 remote_cisco_ops
.to_longname
= "Remote serial target in cisco-specific protocol";
5845 remote_cisco_ops
.to_doc
=
5846 "Use a remote machine via TCP, using a cisco-specific protocol.\n\
5847 Specify the serial device it is connected to (e.g. host:2020).";
5848 remote_cisco_ops
.to_open
= remote_cisco_open
;
5849 remote_cisco_ops
.to_close
= remote_cisco_close
;
5850 remote_cisco_ops
.to_detach
= remote_detach
;
5851 remote_cisco_ops
.to_disconnect
= remote_disconnect
;
5852 remote_cisco_ops
.to_resume
= remote_resume
;
5853 remote_cisco_ops
.to_wait
= remote_cisco_wait
;
5854 remote_cisco_ops
.to_fetch_registers
= remote_fetch_registers
;
5855 remote_cisco_ops
.to_store_registers
= remote_store_registers
;
5856 remote_cisco_ops
.to_prepare_to_store
= remote_prepare_to_store
;
5857 remote_cisco_ops
.to_xfer_memory
= remote_xfer_memory
;
5858 remote_cisco_ops
.to_files_info
= remote_files_info
;
5859 remote_cisco_ops
.to_insert_breakpoint
= remote_insert_breakpoint
;
5860 remote_cisco_ops
.to_remove_breakpoint
= remote_remove_breakpoint
;
5861 remote_cisco_ops
.to_remove_hw_breakpoint
= remote_remove_hw_breakpoint
;
5862 remote_cisco_ops
.to_insert_hw_breakpoint
= remote_insert_hw_breakpoint
;
5863 remote_cisco_ops
.to_insert_watchpoint
= remote_insert_watchpoint
;
5864 remote_cisco_ops
.to_remove_watchpoint
= remote_remove_watchpoint
;
5865 remote_cisco_ops
.to_stopped_by_watchpoint
= remote_stopped_by_watchpoint
;
5866 remote_cisco_ops
.to_stopped_data_address
= remote_stopped_data_address
;
5867 remote_cisco_ops
.to_can_use_hw_breakpoint
= remote_check_watch_resources
;
5868 remote_cisco_ops
.to_kill
= remote_kill
;
5869 remote_cisco_ops
.to_load
= generic_load
;
5870 remote_cisco_ops
.to_mourn_inferior
= remote_cisco_mourn
;
5871 remote_cisco_ops
.to_thread_alive
= remote_thread_alive
;
5872 remote_cisco_ops
.to_find_new_threads
= remote_threads_info
;
5873 remote_cisco_ops
.to_pid_to_str
= remote_pid_to_str
;
5874 remote_cisco_ops
.to_extra_thread_info
= remote_threads_extra_info
;
5875 remote_cisco_ops
.to_stratum
= process_stratum
;
5876 remote_cisco_ops
.to_has_all_memory
= 1;
5877 remote_cisco_ops
.to_has_memory
= 1;
5878 remote_cisco_ops
.to_has_stack
= 1;
5879 remote_cisco_ops
.to_has_registers
= 1;
5880 remote_cisco_ops
.to_has_execution
= 1;
5881 remote_cisco_ops
.to_magic
= OPS_MAGIC
;
5885 remote_can_async_p (void)
5887 /* We're async whenever the serial device is. */
5888 return (current_target
.to_async_mask_value
) && serial_can_async_p (remote_desc
);
5892 remote_is_async_p (void)
5894 /* We're async whenever the serial device is. */
5895 return (current_target
.to_async_mask_value
) && serial_is_async_p (remote_desc
);
5898 /* Pass the SERIAL event on and up to the client. One day this code
5899 will be able to delay notifying the client of an event until the
5900 point where an entire packet has been received. */
5902 static void (*async_client_callback
) (enum inferior_event_type event_type
, void *context
);
5903 static void *async_client_context
;
5904 static serial_event_ftype remote_async_serial_handler
;
5907 remote_async_serial_handler (struct serial
*scb
, void *context
)
5909 /* Don't propogate error information up to the client. Instead let
5910 the client find out about the error by querying the target. */
5911 async_client_callback (INF_REG_EVENT
, async_client_context
);
5915 remote_async (void (*callback
) (enum inferior_event_type event_type
, void *context
), void *context
)
5917 if (current_target
.to_async_mask_value
== 0)
5918 internal_error (__FILE__
, __LINE__
,
5919 "Calling remote_async when async is masked");
5921 if (callback
!= NULL
)
5923 serial_async (remote_desc
, remote_async_serial_handler
, NULL
);
5924 async_client_callback
= callback
;
5925 async_client_context
= context
;
5928 serial_async (remote_desc
, NULL
, NULL
);
5931 /* Target async and target extended-async.
5933 This are temporary targets, until it is all tested. Eventually
5934 async support will be incorporated int the usual 'remote'
5938 init_remote_async_ops (void)
5940 remote_async_ops
.to_shortname
= "async";
5941 remote_async_ops
.to_longname
= "Remote serial target in async version of the gdb-specific protocol";
5942 remote_async_ops
.to_doc
=
5943 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
5944 Specify the serial device it is connected to (e.g. /dev/ttya).";
5945 remote_async_ops
.to_open
= remote_async_open
;
5946 remote_async_ops
.to_close
= remote_close
;
5947 remote_async_ops
.to_detach
= remote_detach
;
5948 remote_async_ops
.to_disconnect
= remote_disconnect
;
5949 remote_async_ops
.to_resume
= remote_async_resume
;
5950 remote_async_ops
.to_wait
= remote_async_wait
;
5951 remote_async_ops
.to_fetch_registers
= remote_fetch_registers
;
5952 remote_async_ops
.to_store_registers
= remote_store_registers
;
5953 remote_async_ops
.to_prepare_to_store
= remote_prepare_to_store
;
5954 remote_async_ops
.to_xfer_memory
= remote_xfer_memory
;
5955 remote_async_ops
.to_files_info
= remote_files_info
;
5956 remote_async_ops
.to_insert_breakpoint
= remote_insert_breakpoint
;
5957 remote_async_ops
.to_remove_breakpoint
= remote_remove_breakpoint
;
5958 remote_async_ops
.to_can_use_hw_breakpoint
= remote_check_watch_resources
;
5959 remote_async_ops
.to_insert_hw_breakpoint
= remote_insert_hw_breakpoint
;
5960 remote_async_ops
.to_remove_hw_breakpoint
= remote_remove_hw_breakpoint
;
5961 remote_async_ops
.to_insert_watchpoint
= remote_insert_watchpoint
;
5962 remote_async_ops
.to_remove_watchpoint
= remote_remove_watchpoint
;
5963 remote_async_ops
.to_stopped_by_watchpoint
= remote_stopped_by_watchpoint
;
5964 remote_async_ops
.to_stopped_data_address
= remote_stopped_data_address
;
5965 remote_async_ops
.to_terminal_inferior
= remote_async_terminal_inferior
;
5966 remote_async_ops
.to_terminal_ours
= remote_async_terminal_ours
;
5967 remote_async_ops
.to_kill
= remote_async_kill
;
5968 remote_async_ops
.to_load
= generic_load
;
5969 remote_async_ops
.to_mourn_inferior
= remote_async_mourn
;
5970 remote_async_ops
.to_thread_alive
= remote_thread_alive
;
5971 remote_async_ops
.to_find_new_threads
= remote_threads_info
;
5972 remote_async_ops
.to_pid_to_str
= remote_pid_to_str
;
5973 remote_async_ops
.to_extra_thread_info
= remote_threads_extra_info
;
5974 remote_async_ops
.to_stop
= remote_stop
;
5975 remote_async_ops
.to_query
= remote_query
;
5976 remote_async_ops
.to_rcmd
= remote_rcmd
;
5977 remote_async_ops
.to_stratum
= process_stratum
;
5978 remote_async_ops
.to_has_all_memory
= 1;
5979 remote_async_ops
.to_has_memory
= 1;
5980 remote_async_ops
.to_has_stack
= 1;
5981 remote_async_ops
.to_has_registers
= 1;
5982 remote_async_ops
.to_has_execution
= 1;
5983 remote_async_ops
.to_has_thread_control
= tc_schedlock
; /* can lock scheduler */
5984 remote_async_ops
.to_can_async_p
= remote_can_async_p
;
5985 remote_async_ops
.to_is_async_p
= remote_is_async_p
;
5986 remote_async_ops
.to_async
= remote_async
;
5987 remote_async_ops
.to_async_mask_value
= 1;
5988 remote_async_ops
.to_magic
= OPS_MAGIC
;
5991 /* Set up the async extended remote vector by making a copy of the standard
5992 remote vector and adding to it. */
5995 init_extended_async_remote_ops (void)
5997 extended_async_remote_ops
= remote_async_ops
;
5999 extended_async_remote_ops
.to_shortname
= "extended-async";
6000 extended_async_remote_ops
.to_longname
=
6001 "Extended remote serial target in async gdb-specific protocol";
6002 extended_async_remote_ops
.to_doc
=
6003 "Use a remote computer via a serial line, using an async gdb-specific protocol.\n\
6004 Specify the serial device it is connected to (e.g. /dev/ttya).",
6005 extended_async_remote_ops
.to_open
= extended_remote_async_open
;
6006 extended_async_remote_ops
.to_create_inferior
= extended_remote_async_create_inferior
;
6007 extended_async_remote_ops
.to_mourn_inferior
= extended_remote_mourn
;
6011 set_remote_cmd (char *args
, int from_tty
)
6016 show_remote_cmd (char *args
, int from_tty
)
6018 /* FIXME: cagney/2002-06-15: This function should iterate over
6019 remote_show_cmdlist for a list of sub commands to show. */
6020 show_remote_protocol_Z_packet_cmd (args
, from_tty
, NULL
);
6021 show_remote_protocol_e_packet_cmd (args
, from_tty
, NULL
);
6022 show_remote_protocol_E_packet_cmd (args
, from_tty
, NULL
);
6023 show_remote_protocol_P_packet_cmd (args
, from_tty
, NULL
);
6024 show_remote_protocol_qSymbol_packet_cmd (args
, from_tty
, NULL
);
6025 show_remote_protocol_binary_download_cmd (args
, from_tty
, NULL
);
6029 build_remote_gdbarch_data (void)
6031 remote_address_size
= TARGET_ADDR_BIT
;
6034 /* Saved pointer to previous owner of the new_objfile event. */
6035 static void (*remote_new_objfile_chain
) (struct objfile
*);
6037 /* Function to be called whenever a new objfile (shlib) is detected. */
6039 remote_new_objfile (struct objfile
*objfile
)
6041 if (remote_desc
!= 0) /* Have a remote connection */
6043 remote_check_symbols (objfile
);
6045 /* Call predecessor on chain, if any. */
6046 if (remote_new_objfile_chain
!= 0 &&
6048 remote_new_objfile_chain (objfile
);
6052 _initialize_remote (void)
6054 static struct cmd_list_element
*remote_set_cmdlist
;
6055 static struct cmd_list_element
*remote_show_cmdlist
;
6056 struct cmd_list_element
*tmpcmd
;
6058 /* architecture specific data */
6059 remote_gdbarch_data_handle
= register_gdbarch_data (init_remote_state
);
6061 /* Old tacky stuff. NOTE: This comes after the remote protocol so
6062 that the remote protocol has been initialized. */
6063 register_gdbarch_swap (&remote_address_size
,
6064 sizeof (&remote_address_size
), NULL
);
6065 register_gdbarch_swap (NULL
, 0, build_remote_gdbarch_data
);
6068 add_target (&remote_ops
);
6070 init_extended_remote_ops ();
6071 add_target (&extended_remote_ops
);
6073 init_remote_async_ops ();
6074 add_target (&remote_async_ops
);
6076 init_extended_async_remote_ops ();
6077 add_target (&extended_async_remote_ops
);
6079 init_remote_cisco_ops ();
6080 add_target (&remote_cisco_ops
);
6082 /* Hook into new objfile notification. */
6083 remote_new_objfile_chain
= target_new_objfile_hook
;
6084 target_new_objfile_hook
= remote_new_objfile
;
6087 init_remote_threadtests ();
6090 /* set/show remote ... */
6092 add_prefix_cmd ("remote", class_maintenance
, set_remote_cmd
, "\
6093 Remote protocol specific variables\n\
6094 Configure various remote-protocol specific variables such as\n\
6095 the packets being used",
6096 &remote_set_cmdlist
, "set remote ",
6097 0/*allow-unknown*/, &setlist
);
6098 add_prefix_cmd ("remote", class_maintenance
, show_remote_cmd
, "\
6099 Remote protocol specific variables\n\
6100 Configure various remote-protocol specific variables such as\n\
6101 the packets being used",
6102 &remote_show_cmdlist
, "show remote ",
6103 0/*allow-unknown*/, &showlist
);
6105 add_cmd ("compare-sections", class_obscure
, compare_sections_command
,
6106 "Compare section data on target to the exec file.\n\
6107 Argument is a single section name (default: all loaded sections).",
6110 add_cmd ("packet", class_maintenance
, packet_command
,
6111 "Send an arbitrary packet to a remote target.\n\
6112 maintenance packet TEXT\n\
6113 If GDB is talking to an inferior via the GDB serial protocol, then\n\
6114 this command sends the string TEXT to the inferior, and displays the\n\
6115 response packet. GDB supplies the initial `$' character, and the\n\
6116 terminating `#' character and checksum.",
6119 add_setshow_boolean_cmd ("remotebreak", no_class
, &remote_break
,
6120 "Set whether to send break if interrupted.\n",
6121 "Show whether to send break if interrupted.\n",
6123 &setlist
, &showlist
);
6125 /* Install commands for configuring memory read/write packets. */
6127 add_cmd ("remotewritesize", no_class
, set_memory_write_packet_size
,
6128 "Set the maximum number of bytes per memory write packet (deprecated).\n",
6130 add_cmd ("remotewritesize", no_class
, show_memory_write_packet_size
,
6131 "Show the maximum number of bytes per memory write packet (deprecated).\n",
6133 add_cmd ("memory-write-packet-size", no_class
,
6134 set_memory_write_packet_size
,
6135 "Set the maximum number of bytes per memory-write packet.\n"
6136 "Specify the number of bytes in a packet or 0 (zero) for the\n"
6137 "default packet size. The actual limit is further reduced\n"
6138 "dependent on the target. Specify ``fixed'' to disable the\n"
6139 "further restriction and ``limit'' to enable that restriction\n",
6140 &remote_set_cmdlist
);
6141 add_cmd ("memory-read-packet-size", no_class
,
6142 set_memory_read_packet_size
,
6143 "Set the maximum number of bytes per memory-read packet.\n"
6144 "Specify the number of bytes in a packet or 0 (zero) for the\n"
6145 "default packet size. The actual limit is further reduced\n"
6146 "dependent on the target. Specify ``fixed'' to disable the\n"
6147 "further restriction and ``limit'' to enable that restriction\n",
6148 &remote_set_cmdlist
);
6149 add_cmd ("memory-write-packet-size", no_class
,
6150 show_memory_write_packet_size
,
6151 "Show the maximum number of bytes per memory-write packet.\n",
6152 &remote_show_cmdlist
);
6153 add_cmd ("memory-read-packet-size", no_class
,
6154 show_memory_read_packet_size
,
6155 "Show the maximum number of bytes per memory-read packet.\n",
6156 &remote_show_cmdlist
);
6158 add_setshow_cmd ("hardware-watchpoint-limit", no_class
,
6159 var_zinteger
, &remote_hw_watchpoint_limit
, "\
6160 Set the maximum number of target hardware watchpoints.\n\
6161 Specify a negative limit for unlimited.", "\
6162 Show the maximum number of target hardware watchpoints.\n",
6163 NULL
, NULL
, &remote_set_cmdlist
, &remote_show_cmdlist
);
6164 add_setshow_cmd ("hardware-breakpoint-limit", no_class
,
6165 var_zinteger
, &remote_hw_breakpoint_limit
, "\
6166 Set the maximum number of target hardware breakpoints.\n\
6167 Specify a negative limit for unlimited.", "\
6168 Show the maximum number of target hardware breakpoints.\n",
6169 NULL
, NULL
, &remote_set_cmdlist
, &remote_show_cmdlist
);
6172 (add_set_cmd ("remoteaddresssize", class_obscure
,
6173 var_integer
, (char *) &remote_address_size
,
6174 "Set the maximum size of the address (in bits) \
6175 in a memory packet.\n",
6179 add_packet_config_cmd (&remote_protocol_binary_download
,
6180 "X", "binary-download",
6181 set_remote_protocol_binary_download_cmd
,
6182 show_remote_protocol_binary_download_cmd
,
6183 &remote_set_cmdlist
, &remote_show_cmdlist
,
6186 /* XXXX - should ``set remotebinarydownload'' be retained for
6189 (add_set_cmd ("remotebinarydownload", no_class
,
6190 var_boolean
, (char *) &remote_binary_download
,
6191 "Set binary downloads.\n", &setlist
),
6195 add_info ("remote-process", remote_info_process
,
6196 "Query the remote system for process info.");
6198 add_packet_config_cmd (&remote_protocol_qSymbol
,
6199 "qSymbol", "symbol-lookup",
6200 set_remote_protocol_qSymbol_packet_cmd
,
6201 show_remote_protocol_qSymbol_packet_cmd
,
6202 &remote_set_cmdlist
, &remote_show_cmdlist
,
6205 add_packet_config_cmd (&remote_protocol_e
,
6206 "e", "step-over-range",
6207 set_remote_protocol_e_packet_cmd
,
6208 show_remote_protocol_e_packet_cmd
,
6209 &remote_set_cmdlist
, &remote_show_cmdlist
,
6211 /* Disable by default. The ``e'' packet has nasty interactions with
6212 the threading code - it relies on global state. */
6213 remote_protocol_e
.detect
= AUTO_BOOLEAN_FALSE
;
6214 update_packet_config (&remote_protocol_e
);
6216 add_packet_config_cmd (&remote_protocol_E
,
6217 "E", "step-over-range-w-signal",
6218 set_remote_protocol_E_packet_cmd
,
6219 show_remote_protocol_E_packet_cmd
,
6220 &remote_set_cmdlist
, &remote_show_cmdlist
,
6222 /* Disable by default. The ``e'' packet has nasty interactions with
6223 the threading code - it relies on global state. */
6224 remote_protocol_E
.detect
= AUTO_BOOLEAN_FALSE
;
6225 update_packet_config (&remote_protocol_E
);
6227 add_packet_config_cmd (&remote_protocol_P
,
6228 "P", "set-register",
6229 set_remote_protocol_P_packet_cmd
,
6230 show_remote_protocol_P_packet_cmd
,
6231 &remote_set_cmdlist
, &remote_show_cmdlist
,
6234 add_packet_config_cmd (&remote_protocol_Z
[Z_PACKET_SOFTWARE_BP
],
6235 "Z0", "software-breakpoint",
6236 set_remote_protocol_Z_software_bp_packet_cmd
,
6237 show_remote_protocol_Z_software_bp_packet_cmd
,
6238 &remote_set_cmdlist
, &remote_show_cmdlist
,
6241 add_packet_config_cmd (&remote_protocol_Z
[Z_PACKET_HARDWARE_BP
],
6242 "Z1", "hardware-breakpoint",
6243 set_remote_protocol_Z_hardware_bp_packet_cmd
,
6244 show_remote_protocol_Z_hardware_bp_packet_cmd
,
6245 &remote_set_cmdlist
, &remote_show_cmdlist
,
6248 add_packet_config_cmd (&remote_protocol_Z
[Z_PACKET_WRITE_WP
],
6249 "Z2", "write-watchpoint",
6250 set_remote_protocol_Z_write_wp_packet_cmd
,
6251 show_remote_protocol_Z_write_wp_packet_cmd
,
6252 &remote_set_cmdlist
, &remote_show_cmdlist
,
6255 add_packet_config_cmd (&remote_protocol_Z
[Z_PACKET_READ_WP
],
6256 "Z3", "read-watchpoint",
6257 set_remote_protocol_Z_read_wp_packet_cmd
,
6258 show_remote_protocol_Z_read_wp_packet_cmd
,
6259 &remote_set_cmdlist
, &remote_show_cmdlist
,
6262 add_packet_config_cmd (&remote_protocol_Z
[Z_PACKET_ACCESS_WP
],
6263 "Z4", "access-watchpoint",
6264 set_remote_protocol_Z_access_wp_packet_cmd
,
6265 show_remote_protocol_Z_access_wp_packet_cmd
,
6266 &remote_set_cmdlist
, &remote_show_cmdlist
,
6269 /* Keep the old ``set remote Z-packet ...'' working. */
6270 add_setshow_auto_boolean_cmd ("Z-packet", class_obscure
,
6271 &remote_Z_packet_detect
, "\
6272 Set use of remote protocol `Z' packets",
6273 "Show use of remote protocol `Z' packets ",
6274 set_remote_protocol_Z_packet_cmd
,
6275 show_remote_protocol_Z_packet_cmd
,
6276 &remote_set_cmdlist
, &remote_show_cmdlist
);
6278 /* Eventually initialize fileio. See fileio.c */
6279 initialize_remote_fileio (remote_set_cmdlist
, remote_show_cmdlist
);