1 /* Remote target communications for serial-line targets in custom GDB protocol
3 Copyright 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996,
4 1997, 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
6 This file is part of GDB.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 59 Temple Place - Suite 330,
21 Boston, MA 02111-1307, USA. */
23 /* See the GDB User Guide for details of the GDB remote protocol. */
26 #include "gdb_string.h"
33 /*#include "terminal.h" */
36 #include "gdb-stabs.h"
37 #include "gdbthread.h"
41 #include "gdb_assert.h"
46 #include <sys/types.h>
49 #include "event-loop.h"
50 #include "event-top.h"
56 #include "gdbcore.h" /* for exec_bfd */
58 /* Prototypes for local functions */
59 static void cleanup_sigint_signal_handler (void *dummy
);
60 static void initialize_sigint_signal_handler (void);
61 static int getpkt_sane (char *buf
, long sizeof_buf
, int forever
);
63 static void handle_remote_sigint (int);
64 static void handle_remote_sigint_twice (int);
65 static void async_remote_interrupt (gdb_client_data
);
66 void async_remote_interrupt_twice (gdb_client_data
);
68 static void build_remote_gdbarch_data (void);
70 static int remote_write_bytes (CORE_ADDR memaddr
, char *myaddr
, int len
);
72 static int remote_read_bytes (CORE_ADDR memaddr
, char *myaddr
, int len
);
74 static void remote_files_info (struct target_ops
*ignore
);
76 static int remote_xfer_memory (CORE_ADDR memaddr
, char *myaddr
,
77 int len
, int should_write
,
78 struct mem_attrib
*attrib
,
79 struct target_ops
*target
);
81 static void remote_prepare_to_store (void);
83 static void remote_fetch_registers (int regno
);
85 static void remote_resume (ptid_t ptid
, int step
,
86 enum target_signal siggnal
);
87 static void remote_async_resume (ptid_t ptid
, int step
,
88 enum target_signal siggnal
);
89 static int remote_start_remote (struct ui_out
*uiout
, void *dummy
);
91 static void remote_open (char *name
, int from_tty
);
92 static void remote_async_open (char *name
, int from_tty
);
94 static void extended_remote_open (char *name
, int from_tty
);
95 static void extended_remote_async_open (char *name
, int from_tty
);
97 static void remote_open_1 (char *, int, struct target_ops
*, int extended_p
);
98 static void remote_async_open_1 (char *, int, struct target_ops
*,
101 static void remote_close (int quitting
);
103 static void remote_store_registers (int regno
);
105 static void remote_mourn (void);
106 static void remote_async_mourn (void);
108 static void extended_remote_restart (void);
110 static void extended_remote_mourn (void);
112 static void extended_remote_create_inferior (char *, char *, char **);
113 static void extended_remote_async_create_inferior (char *, char *, char **);
115 static void remote_mourn_1 (struct target_ops
*);
117 static void remote_send (char *buf
, long sizeof_buf
);
119 static int readchar (int timeout
);
121 static ptid_t
remote_wait (ptid_t ptid
,
122 struct target_waitstatus
*status
);
123 static ptid_t
remote_async_wait (ptid_t ptid
,
124 struct target_waitstatus
*status
);
126 static void remote_kill (void);
127 static void remote_async_kill (void);
129 static int tohex (int nib
);
131 static void remote_detach (char *args
, int from_tty
);
132 static void remote_async_detach (char *args
, int from_tty
);
134 static void remote_interrupt (int signo
);
136 static void remote_interrupt_twice (int signo
);
138 static void interrupt_query (void);
140 static void set_thread (int, int);
142 static int remote_thread_alive (ptid_t
);
144 static void get_offsets (void);
146 static long read_frame (char *buf
, long sizeof_buf
);
148 static int remote_insert_breakpoint (CORE_ADDR
, char *);
150 static int remote_remove_breakpoint (CORE_ADDR
, char *);
152 static int hexnumlen (ULONGEST num
);
154 static void init_remote_ops (void);
156 static void init_extended_remote_ops (void);
158 static void init_remote_cisco_ops (void);
160 static struct target_ops remote_cisco_ops
;
162 static void remote_stop (void);
164 static int ishex (int ch
, int *val
);
166 static int stubhex (int ch
);
168 static int remote_query (int /*char */ , char *, char *, int *);
170 static int hexnumstr (char *, ULONGEST
);
172 static int hexnumnstr (char *, ULONGEST
, int);
174 static CORE_ADDR
remote_address_masked (CORE_ADDR
);
176 static void print_packet (char *);
178 static unsigned long crc32 (unsigned char *, int, unsigned int);
180 static void compare_sections_command (char *, int);
182 static void packet_command (char *, int);
184 static int stub_unpack_int (char *buff
, int fieldlength
);
186 static ptid_t
remote_current_thread (ptid_t oldptid
);
188 static void remote_find_new_threads (void);
190 static void record_currthread (int currthread
);
192 static int fromhex (int a
);
194 static int hex2bin (const char *hex
, char *bin
, int count
);
196 static int bin2hex (const char *bin
, char *hex
, int count
);
198 static int putpkt_binary (char *buf
, int cnt
);
200 static void check_binary_download (CORE_ADDR addr
);
202 struct packet_config
;
204 static void show_packet_config_cmd (struct packet_config
*config
);
206 static void update_packet_config (struct packet_config
*config
);
208 /* Define the target subroutine names */
210 void open_remote_target (char *, int, struct target_ops
*, int);
212 void _initialize_remote (void);
214 /* Description of the remote protocol. Strictly speaking, when the
215 target is open()ed, remote.c should create a per-target description
216 of the remote protocol using that target's architecture.
217 Unfortunatly, the target stack doesn't include local state. For
218 the moment keep the information in the target's architecture
223 long offset
; /* Offset into G packet. */
224 long regnum
; /* GDB's internal register number. */
225 LONGEST pnum
; /* Remote protocol register number. */
226 int in_g_packet
; /* Always part of G packet. */
227 /* long size in bytes; == REGISTER_RAW_SIZE (regnum); at present. */
228 /* char *name; == REGISTER_NAME (regnum); at present. */
233 /* Description of the remote protocol registers. */
234 long sizeof_g_packet
;
236 /* Description of the remote protocol registers indexed by REGNUM
237 (making an array of NUM_REGS + NUM_PSEUDO_REGS in size). */
238 struct packet_reg
*regs
;
240 /* This is the size (in chars) of the first response to the ``g''
241 packet. It is used as a heuristic when determining the maximum
242 size of memory-read and memory-write packets. A target will
243 typically only reserve a buffer large enough to hold the ``g''
244 packet. The size does not include packet overhead (headers and
246 long actual_register_packet_size
;
248 /* This is the maximum size (in chars) of a non read/write packet.
249 It is also used as a cap on the size of read/write packets. */
250 long remote_packet_size
;
253 /* Handle for retreving the remote protocol data from gdbarch. */
254 static struct gdbarch_data
*remote_gdbarch_data_handle
;
256 static struct remote_state
*
257 get_remote_state (void)
259 return gdbarch_data (current_gdbarch
, remote_gdbarch_data_handle
);
263 init_remote_state (struct gdbarch
*gdbarch
)
266 struct remote_state
*rs
= xmalloc (sizeof (struct remote_state
));
268 /* Start out by having the remote protocol mimic the existing
269 behavour - just copy in the description of the register cache. */
270 rs
->sizeof_g_packet
= REGISTER_BYTES
; /* OK use. */
272 /* Assume a 1:1 regnum<->pnum table. */
273 rs
->regs
= xcalloc (NUM_REGS
+ NUM_PSEUDO_REGS
, sizeof (struct packet_reg
));
274 for (regnum
= 0; regnum
< NUM_REGS
+ NUM_PSEUDO_REGS
; regnum
++)
276 struct packet_reg
*r
= &rs
->regs
[regnum
];
279 r
->offset
= REGISTER_BYTE (regnum
);
280 r
->in_g_packet
= (regnum
< NUM_REGS
);
281 /* ...size = REGISTER_RAW_SIZE (regnum); */
282 /* ...name = REGISTER_NAME (regnum); */
285 /* Default maximum number of characters in a packet body. Many
286 remote stubs have a hardwired buffer size of 400 bytes
287 (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used
288 as the maximum packet-size to ensure that the packet and an extra
289 NUL character can always fit in the buffer. This stops GDB
290 trashing stubs that try to squeeze an extra NUL into what is
291 already a full buffer (As of 1999-12-04 that was most stubs. */
292 rs
->remote_packet_size
= 400 - 1;
294 /* Should rs->sizeof_g_packet needs more space than the
295 default, adjust the size accordingly. Remember that each byte is
296 encoded as two characters. 32 is the overhead for the packet
297 header / footer. NOTE: cagney/1999-10-26: I suspect that 8
298 (``$NN:G...#NN'') is a better guess, the below has been padded a
300 if (rs
->sizeof_g_packet
> ((rs
->remote_packet_size
- 32) / 2))
301 rs
->remote_packet_size
= (rs
->sizeof_g_packet
* 2 + 32);
303 /* This one is filled in when a ``g'' packet is received. */
304 rs
->actual_register_packet_size
= 0;
310 free_remote_state (struct gdbarch
*gdbarch
, void *pointer
)
312 struct remote_state
*data
= pointer
;
317 static struct packet_reg
*
318 packet_reg_from_regnum (struct remote_state
*rs
, long regnum
)
320 if (regnum
< 0 && regnum
>= NUM_REGS
+ NUM_PSEUDO_REGS
)
324 struct packet_reg
*r
= &rs
->regs
[regnum
];
325 gdb_assert (r
->regnum
== regnum
);
330 static struct packet_reg
*
331 packet_reg_from_pnum (struct remote_state
*rs
, LONGEST pnum
)
334 for (i
= 0; i
< NUM_REGS
+ NUM_PSEUDO_REGS
; i
++)
336 struct packet_reg
*r
= &rs
->regs
[i
];
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
, int *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
*) alloca (SIZEOF_SECTION_OFFSETS
);
1983 memcpy (offs
, symfile_objfile
->section_offsets
, SIZEOF_SECTION_OFFSETS
);
1985 offs
->offsets
[SECT_OFF_TEXT (symfile_objfile
)] = text_addr
;
1987 /* This is a temporary kludge to force data and bss to use the same offsets
1988 because that's what nlmconv does now. The real solution requires changes
1989 to the stub and remote.c that I don't have time to do right now. */
1991 offs
->offsets
[SECT_OFF_DATA (symfile_objfile
)] = data_addr
;
1992 offs
->offsets
[SECT_OFF_BSS (symfile_objfile
)] = data_addr
;
1994 objfile_relocate (symfile_objfile
, offs
);
1998 * Cisco version of section offsets:
2000 * Instead of having GDB query the target for the section offsets,
2001 * Cisco lets the target volunteer the information! It's also in
2002 * a different format, so here are the functions that will decode
2003 * a section offset packet from a Cisco target.
2007 * Function: remote_cisco_section_offsets
2009 * Returns: zero for success, non-zero for failure
2013 remote_cisco_section_offsets (bfd_vma text_addr
,
2016 bfd_signed_vma
*text_offs
,
2017 bfd_signed_vma
*data_offs
,
2018 bfd_signed_vma
*bss_offs
)
2020 bfd_vma text_base
, data_base
, bss_base
;
2021 struct minimal_symbol
*start
;
2026 if (symfile_objfile
== NULL
)
2027 return -1; /* no can do nothin' */
2029 start
= lookup_minimal_symbol ("_start", NULL
, NULL
);
2031 return -1; /* Can't find "_start" symbol */
2033 data_base
= bss_base
= 0;
2034 text_base
= SYMBOL_VALUE_ADDRESS (start
);
2036 abfd
= symfile_objfile
->obfd
;
2037 for (sect
= abfd
->sections
;
2041 const char *p
= bfd_get_section_name (abfd
, sect
);
2043 if (strcmp (p
+ len
- 4, "data") == 0) /* ends in "data" */
2044 if (data_base
== 0 ||
2045 data_base
> bfd_get_section_vma (abfd
, sect
))
2046 data_base
= bfd_get_section_vma (abfd
, sect
);
2047 if (strcmp (p
+ len
- 3, "bss") == 0) /* ends in "bss" */
2048 if (bss_base
== 0 ||
2049 bss_base
> bfd_get_section_vma (abfd
, sect
))
2050 bss_base
= bfd_get_section_vma (abfd
, sect
);
2052 *text_offs
= text_addr
- text_base
;
2053 *data_offs
= data_addr
- data_base
;
2054 *bss_offs
= bss_addr
- bss_base
;
2059 sprintf (tmp
, "VMA: text = 0x");
2060 sprintf_vma (tmp
+ strlen (tmp
), text_addr
);
2061 sprintf (tmp
+ strlen (tmp
), " data = 0x");
2062 sprintf_vma (tmp
+ strlen (tmp
), data_addr
);
2063 sprintf (tmp
+ strlen (tmp
), " bss = 0x");
2064 sprintf_vma (tmp
+ strlen (tmp
), bss_addr
);
2065 fprintf_filtered (gdb_stdlog
, tmp
);
2066 fprintf_filtered (gdb_stdlog
,
2067 "Reloc offset: text = 0x%s data = 0x%s bss = 0x%s\n",
2068 paddr_nz (*text_offs
),
2069 paddr_nz (*data_offs
),
2070 paddr_nz (*bss_offs
));
2077 * Function: remote_cisco_objfile_relocate
2079 * Relocate the symbol file for a remote target.
2083 remote_cisco_objfile_relocate (bfd_signed_vma text_off
, bfd_signed_vma data_off
,
2084 bfd_signed_vma bss_off
)
2086 struct section_offsets
*offs
;
2088 if (text_off
!= 0 || data_off
!= 0 || bss_off
!= 0)
2090 /* FIXME: This code assumes gdb-stabs.h is being used; it's
2091 broken for xcoff, dwarf, sdb-coff, etc. But there is no
2092 simple canonical representation for this stuff. */
2094 offs
= (struct section_offsets
*) alloca (SIZEOF_SECTION_OFFSETS
);
2095 memcpy (offs
, symfile_objfile
->section_offsets
, SIZEOF_SECTION_OFFSETS
);
2097 offs
->offsets
[SECT_OFF_TEXT (symfile_objfile
)] = text_off
;
2098 offs
->offsets
[SECT_OFF_DATA (symfile_objfile
)] = data_off
;
2099 offs
->offsets
[SECT_OFF_BSS (symfile_objfile
)] = bss_off
;
2101 /* First call the standard objfile_relocate. */
2102 objfile_relocate (symfile_objfile
, offs
);
2104 /* Now we need to fix up the section entries already attached to
2105 the exec target. These entries will control memory transfers
2106 from the exec file. */
2108 exec_set_section_offsets (text_off
, data_off
, bss_off
);
2112 /* Stub for catch_errors. */
2115 remote_start_remote_dummy (struct ui_out
*uiout
, void *dummy
)
2117 start_remote (); /* Initialize gdb process mechanisms */
2118 /* NOTE: Return something >=0. A -ve value is reserved for
2119 catch_exceptions. */
2124 remote_start_remote (struct ui_out
*uiout
, void *dummy
)
2126 immediate_quit
++; /* Allow user to interrupt it */
2128 /* Ack any packet which the remote side has already sent. */
2129 serial_write (remote_desc
, "+", 1);
2131 /* Let the stub know that we want it to return the thread. */
2134 inferior_ptid
= remote_current_thread (inferior_ptid
);
2136 get_offsets (); /* Get text, data & bss offsets */
2138 putpkt ("?"); /* initiate a query from remote machine */
2141 /* NOTE: See comment above in remote_start_remote_dummy(). This
2142 function returns something >=0. */
2143 return remote_start_remote_dummy (uiout
, dummy
);
2146 /* Open a connection to a remote debugger.
2147 NAME is the filename used for communication. */
2150 remote_open (char *name
, int from_tty
)
2152 remote_open_1 (name
, from_tty
, &remote_ops
, 0);
2155 /* Just like remote_open, but with asynchronous support. */
2157 remote_async_open (char *name
, int from_tty
)
2159 remote_async_open_1 (name
, from_tty
, &remote_async_ops
, 0);
2162 /* Open a connection to a remote debugger using the extended
2163 remote gdb protocol. NAME is the filename used for communication. */
2166 extended_remote_open (char *name
, int from_tty
)
2168 remote_open_1 (name
, from_tty
, &extended_remote_ops
, 1 /*extended_p */ );
2171 /* Just like extended_remote_open, but with asynchronous support. */
2173 extended_remote_async_open (char *name
, int from_tty
)
2175 remote_async_open_1 (name
, from_tty
, &extended_async_remote_ops
, 1 /*extended_p */ );
2178 /* Generic code for opening a connection to a remote target. */
2181 init_all_packet_configs (void)
2184 update_packet_config (&remote_protocol_e
);
2185 update_packet_config (&remote_protocol_E
);
2186 update_packet_config (&remote_protocol_P
);
2187 update_packet_config (&remote_protocol_qSymbol
);
2188 for (i
= 0; i
< NR_Z_PACKET_TYPES
; i
++)
2189 update_packet_config (&remote_protocol_Z
[i
]);
2190 /* Force remote_write_bytes to check whether target supports binary
2192 update_packet_config (&remote_protocol_binary_download
);
2195 /* Symbol look-up. */
2198 remote_check_symbols (struct objfile
*objfile
)
2200 struct remote_state
*rs
= get_remote_state ();
2201 char *msg
, *reply
, *tmp
;
2202 struct minimal_symbol
*sym
;
2205 if (remote_protocol_qSymbol
.support
== PACKET_DISABLE
)
2208 msg
= alloca (rs
->remote_packet_size
);
2209 reply
= alloca (rs
->remote_packet_size
);
2211 /* Invite target to request symbol lookups. */
2213 putpkt ("qSymbol::");
2214 getpkt (reply
, (rs
->remote_packet_size
), 0);
2215 packet_ok (reply
, &remote_protocol_qSymbol
);
2217 while (strncmp (reply
, "qSymbol:", 8) == 0)
2220 end
= hex2bin (tmp
, msg
, strlen (tmp
) / 2);
2222 sym
= lookup_minimal_symbol (msg
, NULL
, NULL
);
2224 sprintf (msg
, "qSymbol::%s", &reply
[8]);
2226 sprintf (msg
, "qSymbol:%s:%s",
2227 paddr_nz (SYMBOL_VALUE_ADDRESS (sym
)),
2230 getpkt (reply
, (rs
->remote_packet_size
), 0);
2234 static struct serial
*
2235 remote_serial_open (char *name
)
2237 static int udp_warning
= 0;
2239 /* FIXME: Parsing NAME here is a hack. But we want to warn here instead
2240 of in ser-tcp.c, because it is the remote protocol assuming that the
2241 serial connection is reliable and not the serial connection promising
2243 if (!udp_warning
&& strncmp (name
, "udp:", 4) == 0)
2245 warning ("The remote protocol may be unreliable over UDP.");
2246 warning ("Some events may be lost, rendering further debugging "
2251 return serial_open (name
);
2255 remote_open_1 (char *name
, int from_tty
, struct target_ops
*target
,
2259 struct remote_state
*rs
= get_remote_state ();
2261 error ("To open a remote debug connection, you need to specify what\n"
2262 "serial device is attached to the remote system\n"
2263 "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).");
2265 /* See FIXME above */
2266 wait_forever_enabled_p
= 1;
2268 target_preopen (from_tty
);
2270 unpush_target (target
);
2272 remote_desc
= remote_serial_open (name
);
2274 perror_with_name (name
);
2276 if (baud_rate
!= -1)
2278 if (serial_setbaudrate (remote_desc
, baud_rate
))
2280 serial_close (remote_desc
);
2281 perror_with_name (name
);
2285 serial_raw (remote_desc
);
2287 /* If there is something sitting in the buffer we might take it as a
2288 response to a command, which would be bad. */
2289 serial_flush_input (remote_desc
);
2293 puts_filtered ("Remote debugging using ");
2294 puts_filtered (name
);
2295 puts_filtered ("\n");
2297 push_target (target
); /* Switch to using remote target now */
2299 init_all_packet_configs ();
2301 general_thread
= -2;
2302 continue_thread
= -2;
2304 /* Probe for ability to use "ThreadInfo" query, as required. */
2305 use_threadinfo_query
= 1;
2306 use_threadextra_query
= 1;
2308 /* Without this, some commands which require an active target (such
2309 as kill) won't work. This variable serves (at least) double duty
2310 as both the pid of the target process (if it has such), and as a
2311 flag indicating that a target is active. These functions should
2312 be split out into seperate variables, especially since GDB will
2313 someday have a notion of debugging several processes. */
2315 inferior_ptid
= pid_to_ptid (MAGIC_NULL_PID
);
2316 #ifdef SOLIB_CREATE_INFERIOR_HOOK
2317 /* First delete any symbols previously loaded from shared libraries. */
2318 no_shared_libraries (NULL
, 0);
2321 /* Start the remote connection. If error() or QUIT, discard this
2322 target (we'd otherwise be in an inconsistent state) and then
2323 propogate the error on up the exception chain. This ensures that
2324 the caller doesn't stumble along blindly assuming that the
2325 function succeeded. The CLI doesn't have this problem but other
2326 UI's, such as MI do.
2328 FIXME: cagney/2002-05-19: Instead of re-throwing the exception,
2329 this function should return an error indication letting the
2330 caller restore the previous state. Unfortunatly the command
2331 ``target remote'' is directly wired to this function making that
2332 impossible. On a positive note, the CLI side of this problem has
2333 been fixed - the function set_cmd_context() makes it possible for
2334 all the ``target ....'' commands to share a common callback
2335 function. See cli-dump.c. */
2336 ex
= catch_exceptions (uiout
,
2337 remote_start_remote
, NULL
,
2338 "Couldn't establish connection to remote"
2344 throw_exception (ex
);
2349 /* Tell the remote that we are using the extended protocol. */
2350 char *buf
= alloca (rs
->remote_packet_size
);
2352 getpkt (buf
, (rs
->remote_packet_size
), 0);
2354 #ifdef SOLIB_CREATE_INFERIOR_HOOK
2355 /* FIXME: need a master target_open vector from which all
2356 remote_opens can be called, so that stuff like this can
2357 go there. Failing that, the following code must be copied
2358 to the open function for any remote target that wants to
2359 support svr4 shared libraries. */
2361 /* Set up to detect and load shared libraries. */
2362 if (exec_bfd
) /* No use without an exec file. */
2364 SOLIB_CREATE_INFERIOR_HOOK (PIDGET (inferior_ptid
));
2365 remote_check_symbols (symfile_objfile
);
2370 /* Just like remote_open but with asynchronous support. */
2372 remote_async_open_1 (char *name
, int from_tty
, struct target_ops
*target
,
2376 struct remote_state
*rs
= get_remote_state ();
2378 error ("To open a remote debug connection, you need to specify what\n"
2379 "serial device is attached to the remote system\n"
2380 "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).");
2382 target_preopen (from_tty
);
2384 unpush_target (target
);
2386 remote_desc
= remote_serial_open (name
);
2388 perror_with_name (name
);
2390 if (baud_rate
!= -1)
2392 if (serial_setbaudrate (remote_desc
, baud_rate
))
2394 serial_close (remote_desc
);
2395 perror_with_name (name
);
2399 serial_raw (remote_desc
);
2401 /* If there is something sitting in the buffer we might take it as a
2402 response to a command, which would be bad. */
2403 serial_flush_input (remote_desc
);
2407 puts_filtered ("Remote debugging using ");
2408 puts_filtered (name
);
2409 puts_filtered ("\n");
2412 push_target (target
); /* Switch to using remote target now */
2414 init_all_packet_configs ();
2416 general_thread
= -2;
2417 continue_thread
= -2;
2419 /* Probe for ability to use "ThreadInfo" query, as required. */
2420 use_threadinfo_query
= 1;
2421 use_threadextra_query
= 1;
2423 /* Without this, some commands which require an active target (such
2424 as kill) won't work. This variable serves (at least) double duty
2425 as both the pid of the target process (if it has such), and as a
2426 flag indicating that a target is active. These functions should
2427 be split out into seperate variables, especially since GDB will
2428 someday have a notion of debugging several processes. */
2429 inferior_ptid
= pid_to_ptid (MAGIC_NULL_PID
);
2431 /* With this target we start out by owning the terminal. */
2432 remote_async_terminal_ours_p
= 1;
2434 /* FIXME: cagney/1999-09-23: During the initial connection it is
2435 assumed that the target is already ready and able to respond to
2436 requests. Unfortunately remote_start_remote() eventually calls
2437 wait_for_inferior() with no timeout. wait_forever_enabled_p gets
2438 around this. Eventually a mechanism that allows
2439 wait_for_inferior() to expect/get timeouts will be
2441 wait_forever_enabled_p
= 0;
2443 #ifdef SOLIB_CREATE_INFERIOR_HOOK
2444 /* First delete any symbols previously loaded from shared libraries. */
2445 no_shared_libraries (NULL
, 0);
2448 /* Start the remote connection; if error, discard this target. See
2449 the comments in remote_open_1() for further details such as the
2450 need to re-throw the exception. */
2451 ex
= catch_exceptions (uiout
,
2452 remote_start_remote
, NULL
,
2453 "Couldn't establish connection to remote"
2459 wait_forever_enabled_p
= 1;
2460 throw_exception (ex
);
2463 wait_forever_enabled_p
= 1;
2467 /* Tell the remote that we are using the extended protocol. */
2468 char *buf
= alloca (rs
->remote_packet_size
);
2470 getpkt (buf
, (rs
->remote_packet_size
), 0);
2472 #ifdef SOLIB_CREATE_INFERIOR_HOOK
2473 /* FIXME: need a master target_open vector from which all
2474 remote_opens can be called, so that stuff like this can
2475 go there. Failing that, the following code must be copied
2476 to the open function for any remote target that wants to
2477 support svr4 shared libraries. */
2479 /* Set up to detect and load shared libraries. */
2480 if (exec_bfd
) /* No use without an exec file. */
2482 SOLIB_CREATE_INFERIOR_HOOK (PIDGET (inferior_ptid
));
2483 remote_check_symbols (symfile_objfile
);
2488 /* This takes a program previously attached to and detaches it. After
2489 this is done, GDB can be used to debug some other program. We
2490 better not have left any breakpoints in the target program or it'll
2491 die when it hits one. */
2494 remote_detach (char *args
, int from_tty
)
2496 struct remote_state
*rs
= get_remote_state ();
2497 char *buf
= alloca (rs
->remote_packet_size
);
2500 error ("Argument given to \"detach\" when remotely debugging.");
2502 /* Tell the remote target to detach. */
2504 remote_send (buf
, (rs
->remote_packet_size
));
2506 target_mourn_inferior ();
2508 puts_filtered ("Ending remote debugging.\n");
2512 /* Same as remote_detach, but with async support. */
2514 remote_async_detach (char *args
, int from_tty
)
2516 struct remote_state
*rs
= get_remote_state ();
2517 char *buf
= alloca (rs
->remote_packet_size
);
2520 error ("Argument given to \"detach\" when remotely debugging.");
2522 /* Tell the remote target to detach. */
2524 remote_send (buf
, (rs
->remote_packet_size
));
2526 /* Unregister the file descriptor from the event loop. */
2527 if (target_is_async_p ())
2528 serial_async (remote_desc
, NULL
, 0);
2530 target_mourn_inferior ();
2532 puts_filtered ("Ending remote debugging.\n");
2535 /* Convert hex digit A to a number. */
2540 if (a
>= '0' && a
<= '9')
2542 else if (a
>= 'a' && a
<= 'f')
2543 return a
- 'a' + 10;
2544 else if (a
>= 'A' && a
<= 'F')
2545 return a
- 'A' + 10;
2547 error ("Reply contains invalid hex digit %d", a
);
2551 hex2bin (const char *hex
, char *bin
, int count
)
2555 for (i
= 0; i
< count
; i
++)
2557 if (hex
[0] == 0 || hex
[1] == 0)
2559 /* Hex string is short, or of uneven length.
2560 Return the count that has been converted so far. */
2563 *bin
++ = fromhex (hex
[0]) * 16 + fromhex (hex
[1]);
2569 /* Convert number NIB to a hex digit. */
2577 return 'a' + nib
- 10;
2581 bin2hex (const char *bin
, char *hex
, int count
)
2584 /* May use a length, or a nul-terminated string as input. */
2586 count
= strlen (bin
);
2588 for (i
= 0; i
< count
; i
++)
2590 *hex
++ = tohex ((*bin
>> 4) & 0xf);
2591 *hex
++ = tohex (*bin
++ & 0xf);
2597 /* Tell the remote machine to resume. */
2599 static enum target_signal last_sent_signal
= TARGET_SIGNAL_0
;
2601 static int last_sent_step
;
2604 remote_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
) ();
2625 /* The s/S/c/C packets do not return status. So if the target does
2626 not support the S or C packets, the debug agent returns an empty
2627 string which is detected in remote_wait(). This protocol defect
2628 is fixed in the e/E packets. */
2630 if (step
&& step_range_end
)
2632 /* If the target does not support the 'E' packet, we try the 'S'
2633 packet. Ideally we would fall back to the 'e' packet if that
2634 too is not supported. But that would require another copy of
2635 the code to issue the 'e' packet (and fall back to 's' if not
2636 supported) in remote_wait(). */
2638 if (siggnal
!= TARGET_SIGNAL_0
)
2640 if (remote_protocol_E
.support
!= PACKET_DISABLE
)
2644 *p
++ = tohex (((int) siggnal
>> 4) & 0xf);
2645 *p
++ = tohex (((int) siggnal
) & 0xf);
2647 p
+= hexnumstr (p
, (ULONGEST
) step_range_start
);
2649 p
+= hexnumstr (p
, (ULONGEST
) step_range_end
);
2653 getpkt (buf
, (rs
->remote_packet_size
), 0);
2655 if (packet_ok (buf
, &remote_protocol_E
) == PACKET_OK
)
2661 if (remote_protocol_e
.support
!= PACKET_DISABLE
)
2665 p
+= hexnumstr (p
, (ULONGEST
) step_range_start
);
2667 p
+= hexnumstr (p
, (ULONGEST
) step_range_end
);
2671 getpkt (buf
, (rs
->remote_packet_size
), 0);
2673 if (packet_ok (buf
, &remote_protocol_e
) == PACKET_OK
)
2679 if (siggnal
!= TARGET_SIGNAL_0
)
2681 buf
[0] = step
? 'S' : 'C';
2682 buf
[1] = tohex (((int) siggnal
>> 4) & 0xf);
2683 buf
[2] = tohex (((int) siggnal
) & 0xf);
2687 strcpy (buf
, step
? "s" : "c");
2692 /* Same as remote_resume, but with async support. */
2694 remote_async_resume (ptid_t ptid
, int step
, enum target_signal siggnal
)
2696 struct remote_state
*rs
= get_remote_state ();
2697 char *buf
= alloca (rs
->remote_packet_size
);
2698 int pid
= PIDGET (ptid
);
2702 set_thread (0, 0); /* run any thread */
2704 set_thread (pid
, 0); /* run this thread */
2706 last_sent_signal
= siggnal
;
2707 last_sent_step
= step
;
2709 /* A hook for when we need to do something at the last moment before
2711 if (target_resume_hook
)
2712 (*target_resume_hook
) ();
2714 /* The s/S/c/C packets do not return status. So if the target does
2715 not support the S or C packets, the debug agent returns an empty
2716 string which is detected in remote_wait(). This protocol defect
2717 is fixed in the e/E packets. */
2719 if (step
&& step_range_end
)
2721 /* If the target does not support the 'E' packet, we try the 'S'
2722 packet. Ideally we would fall back to the 'e' packet if that
2723 too is not supported. But that would require another copy of
2724 the code to issue the 'e' packet (and fall back to 's' if not
2725 supported) in remote_wait(). */
2727 if (siggnal
!= TARGET_SIGNAL_0
)
2729 if (remote_protocol_E
.support
!= PACKET_DISABLE
)
2733 *p
++ = tohex (((int) siggnal
>> 4) & 0xf);
2734 *p
++ = tohex (((int) siggnal
) & 0xf);
2736 p
+= hexnumstr (p
, (ULONGEST
) step_range_start
);
2738 p
+= hexnumstr (p
, (ULONGEST
) step_range_end
);
2742 getpkt (buf
, (rs
->remote_packet_size
), 0);
2744 if (packet_ok (buf
, &remote_protocol_E
) == PACKET_OK
)
2745 goto register_event_loop
;
2750 if (remote_protocol_e
.support
!= PACKET_DISABLE
)
2754 p
+= hexnumstr (p
, (ULONGEST
) step_range_start
);
2756 p
+= hexnumstr (p
, (ULONGEST
) step_range_end
);
2760 getpkt (buf
, (rs
->remote_packet_size
), 0);
2762 if (packet_ok (buf
, &remote_protocol_e
) == PACKET_OK
)
2763 goto register_event_loop
;
2768 if (siggnal
!= TARGET_SIGNAL_0
)
2770 buf
[0] = step
? 'S' : 'C';
2771 buf
[1] = tohex (((int) siggnal
>> 4) & 0xf);
2772 buf
[2] = tohex ((int) siggnal
& 0xf);
2776 strcpy (buf
, step
? "s" : "c");
2780 register_event_loop
:
2781 /* We are about to start executing the inferior, let's register it
2782 with the event loop. NOTE: this is the one place where all the
2783 execution commands end up. We could alternatively do this in each
2784 of the execution commands in infcmd.c.*/
2785 /* FIXME: ezannoni 1999-09-28: We may need to move this out of here
2786 into infcmd.c in order to allow inferior function calls to work
2787 NOT asynchronously. */
2788 if (event_loop_p
&& target_can_async_p ())
2789 target_async (inferior_event_handler
, 0);
2790 /* Tell the world that the target is now executing. */
2791 /* FIXME: cagney/1999-09-23: Is it the targets responsibility to set
2792 this? Instead, should the client of target just assume (for
2793 async targets) that the target is going to start executing? Is
2794 this information already found in the continuation block? */
2795 if (target_is_async_p ())
2796 target_executing
= 1;
2800 /* Set up the signal handler for SIGINT, while the target is
2801 executing, ovewriting the 'regular' SIGINT signal handler. */
2803 initialize_sigint_signal_handler (void)
2805 sigint_remote_token
=
2806 create_async_signal_handler (async_remote_interrupt
, NULL
);
2807 signal (SIGINT
, handle_remote_sigint
);
2810 /* Signal handler for SIGINT, while the target is executing. */
2812 handle_remote_sigint (int sig
)
2814 signal (sig
, handle_remote_sigint_twice
);
2815 sigint_remote_twice_token
=
2816 create_async_signal_handler (async_remote_interrupt_twice
, NULL
);
2817 mark_async_signal_handler_wrapper (sigint_remote_token
);
2820 /* Signal handler for SIGINT, installed after SIGINT has already been
2821 sent once. It will take effect the second time that the user sends
2824 handle_remote_sigint_twice (int sig
)
2826 signal (sig
, handle_sigint
);
2827 sigint_remote_twice_token
=
2828 create_async_signal_handler (inferior_event_handler_wrapper
, NULL
);
2829 mark_async_signal_handler_wrapper (sigint_remote_twice_token
);
2832 /* Perform the real interruption of the target execution, in response
2835 async_remote_interrupt (gdb_client_data arg
)
2838 fprintf_unfiltered (gdb_stdlog
, "remote_interrupt called\n");
2843 /* Perform interrupt, if the first attempt did not succeed. Just give
2844 up on the target alltogether. */
2846 async_remote_interrupt_twice (gdb_client_data arg
)
2849 fprintf_unfiltered (gdb_stdlog
, "remote_interrupt_twice called\n");
2850 /* Do something only if the target was not killed by the previous
2852 if (target_executing
)
2855 signal (SIGINT
, handle_remote_sigint
);
2859 /* Reinstall the usual SIGINT handlers, after the target has
2862 cleanup_sigint_signal_handler (void *dummy
)
2864 signal (SIGINT
, handle_sigint
);
2865 if (sigint_remote_twice_token
)
2866 delete_async_signal_handler ((struct async_signal_handler
**) & sigint_remote_twice_token
);
2867 if (sigint_remote_token
)
2868 delete_async_signal_handler ((struct async_signal_handler
**) & sigint_remote_token
);
2871 /* Send ^C to target to halt it. Target will respond, and send us a
2873 static void (*ofunc
) (int);
2875 /* The command line interface's stop routine. This function is installed
2876 as a signal handler for SIGINT. The first time a user requests a
2877 stop, we call remote_stop to send a break or ^C. If there is no
2878 response from the target (it didn't stop when the user requested it),
2879 we ask the user if he'd like to detach from the target. */
2881 remote_interrupt (int signo
)
2883 /* If this doesn't work, try more severe steps. */
2884 signal (signo
, remote_interrupt_twice
);
2887 fprintf_unfiltered (gdb_stdlog
, "remote_interrupt called\n");
2892 /* The user typed ^C twice. */
2895 remote_interrupt_twice (int signo
)
2897 signal (signo
, ofunc
);
2899 signal (signo
, remote_interrupt
);
2902 /* This is the generic stop called via the target vector. When a target
2903 interrupt is requested, either by the command line or the GUI, we
2904 will eventually end up here. */
2908 /* Send a break or a ^C, depending on user preference. */
2910 fprintf_unfiltered (gdb_stdlog
, "remote_stop called\n");
2913 serial_send_break (remote_desc
);
2915 serial_write (remote_desc
, "\003", 1);
2918 /* Ask the user what to do when an interrupt is received. */
2921 interrupt_query (void)
2923 target_terminal_ours ();
2925 if (query ("Interrupted while waiting for the program.\n\
2926 Give up (and stop debugging it)? "))
2928 target_mourn_inferior ();
2929 throw_exception (RETURN_QUIT
);
2932 target_terminal_inferior ();
2935 /* Enable/disable target terminal ownership. Most targets can use
2936 terminal groups to control terminal ownership. Remote targets are
2937 different in that explicit transfer of ownership to/from GDB/target
2941 remote_async_terminal_inferior (void)
2943 /* FIXME: cagney/1999-09-27: Shouldn't need to test for
2944 sync_execution here. This function should only be called when
2945 GDB is resuming the inferior in the forground. A background
2946 resume (``run&'') should leave GDB in control of the terminal and
2947 consequently should not call this code. */
2948 if (!sync_execution
)
2950 /* FIXME: cagney/1999-09-27: Closely related to the above. Make
2951 calls target_terminal_*() idenpotent. The event-loop GDB talking
2952 to an asynchronous target with a synchronous command calls this
2953 function from both event-top.c and infrun.c/infcmd.c. Once GDB
2954 stops trying to transfer the terminal to the target when it
2955 shouldn't this guard can go away. */
2956 if (!remote_async_terminal_ours_p
)
2958 delete_file_handler (input_fd
);
2959 remote_async_terminal_ours_p
= 0;
2960 initialize_sigint_signal_handler ();
2961 /* NOTE: At this point we could also register our selves as the
2962 recipient of all input. Any characters typed could then be
2963 passed on down to the target. */
2967 remote_async_terminal_ours (void)
2969 /* See FIXME in remote_async_terminal_inferior. */
2970 if (!sync_execution
)
2972 /* See FIXME in remote_async_terminal_inferior. */
2973 if (remote_async_terminal_ours_p
)
2975 cleanup_sigint_signal_handler (NULL
);
2976 add_file_handler (input_fd
, stdin_event_handler
, 0);
2977 remote_async_terminal_ours_p
= 1;
2980 /* If nonzero, ignore the next kill. */
2985 remote_console_output (char *msg
)
2989 for (p
= msg
; p
[0] && p
[1]; p
+= 2)
2992 char c
= fromhex (p
[0]) * 16 + fromhex (p
[1]);
2995 fputs_unfiltered (tb
, gdb_stdtarg
);
2997 gdb_flush (gdb_stdtarg
);
3000 /* Wait until the remote machine stops, then return,
3001 storing status in STATUS just as `wait' would.
3002 Returns "pid", which in the case of a multi-threaded
3003 remote OS, is the thread-id. */
3006 remote_wait (ptid_t ptid
, struct target_waitstatus
*status
)
3008 struct remote_state
*rs
= get_remote_state ();
3009 unsigned char *buf
= alloca (rs
->remote_packet_size
);
3010 int thread_num
= -1;
3012 status
->kind
= TARGET_WAITKIND_EXITED
;
3013 status
->value
.integer
= 0;
3019 ofunc
= signal (SIGINT
, remote_interrupt
);
3020 getpkt (buf
, (rs
->remote_packet_size
), 1);
3021 signal (SIGINT
, ofunc
);
3023 /* This is a hook for when we need to do something (perhaps the
3024 collection of trace data) every time the target stops. */
3025 if (target_wait_loop_hook
)
3026 (*target_wait_loop_hook
) ();
3030 case 'E': /* Error of some sort */
3031 warning ("Remote failure reply: %s", buf
);
3033 case 'T': /* Status with PC, SP, FP, ... */
3036 char* regs
= (char*) alloca (MAX_REGISTER_RAW_SIZE
);
3038 /* Expedited reply, containing Signal, {regno, reg} repeat */
3039 /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where
3041 n... = register number
3042 r... = register contents
3044 p
= &buf
[3]; /* after Txx */
3052 /* Read the ``P'' register number. */
3053 LONGEST pnum
= strtol ((const char *) p
, &p_temp
, 16);
3054 p1
= (unsigned char *) p_temp
;
3056 if (p1
== p
) /* No register number present here */
3058 p1
= (unsigned char *) strchr ((const char *) p
, ':');
3060 warning ("Malformed packet(a) (missing colon): %s\n\
3063 if (strncmp ((const char *) p
, "thread", p1
- p
) == 0)
3065 p_temp
= unpack_varlen_hex (++p1
, &thread_num
);
3066 record_currthread (thread_num
);
3067 p
= (unsigned char *) p_temp
;
3072 struct packet_reg
*reg
= packet_reg_from_pnum (rs
, pnum
);
3076 warning ("Malformed packet(b) (missing colon): %s\n\
3081 warning ("Remote sent bad register number %s: %s\n\
3083 phex_nz (pnum
, 0), p
, buf
);
3085 fieldsize
= hex2bin (p
, regs
, REGISTER_RAW_SIZE (reg
->regnum
));
3087 if (fieldsize
< REGISTER_RAW_SIZE (reg
->regnum
))
3088 warning ("Remote reply is too short: %s", buf
);
3089 supply_register (reg
->regnum
, regs
);
3094 warning ("Remote register badly formatted: %s", buf
);
3095 warning (" here: %s", p
);
3100 case 'S': /* Old style status, just signal only */
3101 status
->kind
= TARGET_WAITKIND_STOPPED
;
3102 status
->value
.sig
= (enum target_signal
)
3103 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
3107 /* Export Cisco kernel mode as a convenience variable
3108 (so that it can be used in the GDB prompt if desired). */
3110 if (cisco_kernel_mode
== 1)
3111 set_internalvar (lookup_internalvar ("cisco_kernel_mode"),
3112 value_from_string ("PDEBUG-"));
3113 cisco_kernel_mode
= 0;
3114 thread_num
= strtol ((const char *) &buf
[4], NULL
, 16);
3115 record_currthread (thread_num
);
3117 else if (buf
[3] == 'k')
3119 /* Export Cisco kernel mode as a convenience variable
3120 (so that it can be used in the GDB prompt if desired). */
3122 if (cisco_kernel_mode
== 1)
3123 set_internalvar (lookup_internalvar ("cisco_kernel_mode"),
3124 value_from_string ("KDEBUG-"));
3125 cisco_kernel_mode
= 1;
3128 case 'N': /* Cisco special: status and offsets */
3130 bfd_vma text_addr
, data_addr
, bss_addr
;
3131 bfd_signed_vma text_off
, data_off
, bss_off
;
3134 status
->kind
= TARGET_WAITKIND_STOPPED
;
3135 status
->value
.sig
= (enum target_signal
)
3136 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
3138 if (symfile_objfile
== NULL
)
3140 warning ("Relocation packet received with no symbol file. \
3145 /* Relocate object file. Buffer format is NAATT;DD;BB
3146 * where AA is the signal number, TT is the new text
3147 * address, DD * is the new data address, and BB is the
3148 * new bss address. */
3151 text_addr
= strtoul (p
, (char **) &p1
, 16);
3152 if (p1
== p
|| *p1
!= ';')
3153 warning ("Malformed relocation packet: Packet '%s'", buf
);
3155 data_addr
= strtoul (p
, (char **) &p1
, 16);
3156 if (p1
== p
|| *p1
!= ';')
3157 warning ("Malformed relocation packet: Packet '%s'", buf
);
3159 bss_addr
= strtoul (p
, (char **) &p1
, 16);
3161 warning ("Malformed relocation packet: Packet '%s'", buf
);
3163 if (remote_cisco_section_offsets (text_addr
, data_addr
, bss_addr
,
3164 &text_off
, &data_off
, &bss_off
)
3166 if (text_off
!= 0 || data_off
!= 0 || bss_off
!= 0)
3167 remote_cisco_objfile_relocate (text_off
, data_off
, bss_off
);
3171 case 'W': /* Target exited */
3173 /* The remote process exited. */
3174 status
->kind
= TARGET_WAITKIND_EXITED
;
3175 status
->value
.integer
= (fromhex (buf
[1]) << 4) + fromhex (buf
[2]);
3179 status
->kind
= TARGET_WAITKIND_SIGNALLED
;
3180 status
->value
.sig
= (enum target_signal
)
3181 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
3185 case 'O': /* Console output */
3186 remote_console_output (buf
+ 1);
3189 if (last_sent_signal
!= TARGET_SIGNAL_0
)
3191 /* Zero length reply means that we tried 'S' or 'C' and
3192 the remote system doesn't support it. */
3193 target_terminal_ours_for_output ();
3195 ("Can't send signals to this remote system. %s not sent.\n",
3196 target_signal_to_name (last_sent_signal
));
3197 last_sent_signal
= TARGET_SIGNAL_0
;
3198 target_terminal_inferior ();
3200 strcpy ((char *) buf
, last_sent_step
? "s" : "c");
3201 putpkt ((char *) buf
);
3204 /* else fallthrough */
3206 warning ("Invalid remote reply: %s", buf
);
3211 if (thread_num
!= -1)
3213 return pid_to_ptid (thread_num
);
3215 return inferior_ptid
;
3218 /* Async version of remote_wait. */
3220 remote_async_wait (ptid_t ptid
, struct target_waitstatus
*status
)
3222 struct remote_state
*rs
= get_remote_state ();
3223 unsigned char *buf
= alloca (rs
->remote_packet_size
);
3224 int thread_num
= -1;
3226 status
->kind
= TARGET_WAITKIND_EXITED
;
3227 status
->value
.integer
= 0;
3233 if (!target_is_async_p ())
3234 ofunc
= signal (SIGINT
, remote_interrupt
);
3235 /* FIXME: cagney/1999-09-27: If we're in async mode we should
3236 _never_ wait for ever -> test on target_is_async_p().
3237 However, before we do that we need to ensure that the caller
3238 knows how to take the target into/out of async mode. */
3239 getpkt (buf
, (rs
->remote_packet_size
), wait_forever_enabled_p
);
3240 if (!target_is_async_p ())
3241 signal (SIGINT
, ofunc
);
3243 /* This is a hook for when we need to do something (perhaps the
3244 collection of trace data) every time the target stops. */
3245 if (target_wait_loop_hook
)
3246 (*target_wait_loop_hook
) ();
3250 case 'E': /* Error of some sort */
3251 warning ("Remote failure reply: %s", buf
);
3253 case 'T': /* Status with PC, SP, FP, ... */
3256 char* regs
= (char*) alloca (MAX_REGISTER_RAW_SIZE
);
3258 /* Expedited reply, containing Signal, {regno, reg} repeat */
3259 /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where
3261 n... = register number
3262 r... = register contents
3264 p
= &buf
[3]; /* after Txx */
3272 /* Read the register number */
3273 long pnum
= strtol ((const char *) p
, &p_temp
, 16);
3274 p1
= (unsigned char *) p_temp
;
3276 if (p1
== p
) /* No register number present here */
3278 p1
= (unsigned char *) strchr ((const char *) p
, ':');
3280 warning ("Malformed packet(a) (missing colon): %s\n\
3283 if (strncmp ((const char *) p
, "thread", p1
- p
) == 0)
3285 p_temp
= unpack_varlen_hex (++p1
, &thread_num
);
3286 record_currthread (thread_num
);
3287 p
= (unsigned char *) p_temp
;
3292 struct packet_reg
*reg
= packet_reg_from_pnum (rs
, pnum
);
3295 warning ("Malformed packet(b) (missing colon): %s\n\
3300 warning ("Remote sent bad register number %ld: %s\n\
3304 fieldsize
= hex2bin (p
, regs
, REGISTER_RAW_SIZE (reg
->regnum
));
3306 if (fieldsize
< REGISTER_RAW_SIZE (reg
->regnum
))
3307 warning ("Remote reply is too short: %s", buf
);
3308 supply_register (reg
->regnum
, regs
);
3313 warning ("Remote register badly formatted: %s", buf
);
3314 warning (" here: %s", p
);
3319 case 'S': /* Old style status, just signal only */
3320 status
->kind
= TARGET_WAITKIND_STOPPED
;
3321 status
->value
.sig
= (enum target_signal
)
3322 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
3326 /* Export Cisco kernel mode as a convenience variable
3327 (so that it can be used in the GDB prompt if desired). */
3329 if (cisco_kernel_mode
== 1)
3330 set_internalvar (lookup_internalvar ("cisco_kernel_mode"),
3331 value_from_string ("PDEBUG-"));
3332 cisco_kernel_mode
= 0;
3333 thread_num
= strtol ((const char *) &buf
[4], NULL
, 16);
3334 record_currthread (thread_num
);
3336 else if (buf
[3] == 'k')
3338 /* Export Cisco kernel mode as a convenience variable
3339 (so that it can be used in the GDB prompt if desired). */
3341 if (cisco_kernel_mode
== 1)
3342 set_internalvar (lookup_internalvar ("cisco_kernel_mode"),
3343 value_from_string ("KDEBUG-"));
3344 cisco_kernel_mode
= 1;
3347 case 'N': /* Cisco special: status and offsets */
3349 bfd_vma text_addr
, data_addr
, bss_addr
;
3350 bfd_signed_vma text_off
, data_off
, bss_off
;
3353 status
->kind
= TARGET_WAITKIND_STOPPED
;
3354 status
->value
.sig
= (enum target_signal
)
3355 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
3357 if (symfile_objfile
== NULL
)
3359 warning ("Relocation packet recieved with no symbol file. \
3364 /* Relocate object file. Buffer format is NAATT;DD;BB
3365 * where AA is the signal number, TT is the new text
3366 * address, DD * is the new data address, and BB is the
3367 * new bss address. */
3370 text_addr
= strtoul (p
, (char **) &p1
, 16);
3371 if (p1
== p
|| *p1
!= ';')
3372 warning ("Malformed relocation packet: Packet '%s'", buf
);
3374 data_addr
= strtoul (p
, (char **) &p1
, 16);
3375 if (p1
== p
|| *p1
!= ';')
3376 warning ("Malformed relocation packet: Packet '%s'", buf
);
3378 bss_addr
= strtoul (p
, (char **) &p1
, 16);
3380 warning ("Malformed relocation packet: Packet '%s'", buf
);
3382 if (remote_cisco_section_offsets (text_addr
, data_addr
, bss_addr
,
3383 &text_off
, &data_off
, &bss_off
)
3385 if (text_off
!= 0 || data_off
!= 0 || bss_off
!= 0)
3386 remote_cisco_objfile_relocate (text_off
, data_off
, bss_off
);
3390 case 'W': /* Target exited */
3392 /* The remote process exited. */
3393 status
->kind
= TARGET_WAITKIND_EXITED
;
3394 status
->value
.integer
= (fromhex (buf
[1]) << 4) + fromhex (buf
[2]);
3398 status
->kind
= TARGET_WAITKIND_SIGNALLED
;
3399 status
->value
.sig
= (enum target_signal
)
3400 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
3404 case 'O': /* Console output */
3405 remote_console_output (buf
+ 1);
3406 /* Return immediately to the event loop. The event loop will
3407 still be waiting on the inferior afterwards. */
3408 status
->kind
= TARGET_WAITKIND_IGNORE
;
3411 if (last_sent_signal
!= TARGET_SIGNAL_0
)
3413 /* Zero length reply means that we tried 'S' or 'C' and
3414 the remote system doesn't support it. */
3415 target_terminal_ours_for_output ();
3417 ("Can't send signals to this remote system. %s not sent.\n",
3418 target_signal_to_name (last_sent_signal
));
3419 last_sent_signal
= TARGET_SIGNAL_0
;
3420 target_terminal_inferior ();
3422 strcpy ((char *) buf
, last_sent_step
? "s" : "c");
3423 putpkt ((char *) buf
);
3426 /* else fallthrough */
3428 warning ("Invalid remote reply: %s", buf
);
3433 if (thread_num
!= -1)
3435 return pid_to_ptid (thread_num
);
3437 return inferior_ptid
;
3440 /* Number of bytes of registers this stub implements. */
3442 static int register_bytes_found
;
3444 /* Read the remote registers into the block REGS. */
3445 /* Currently we just read all the registers, so we don't use regnum. */
3449 remote_fetch_registers (int regnum
)
3451 struct remote_state
*rs
= get_remote_state ();
3452 char *buf
= alloca (rs
->remote_packet_size
);
3455 char *regs
= alloca (rs
->sizeof_g_packet
);
3457 set_thread (PIDGET (inferior_ptid
), 1);
3461 struct packet_reg
*reg
= packet_reg_from_regnum (rs
, regnum
);
3462 gdb_assert (reg
!= NULL
);
3463 if (!reg
->in_g_packet
)
3464 internal_error (__FILE__
, __LINE__
,
3465 "Attempt to fetch a non G-packet register when this "
3466 "remote.c does not support the p-packet.");
3470 remote_send (buf
, (rs
->remote_packet_size
));
3472 /* Save the size of the packet sent to us by the target. Its used
3473 as a heuristic when determining the max size of packets that the
3474 target can safely receive. */
3475 if ((rs
->actual_register_packet_size
) == 0)
3476 (rs
->actual_register_packet_size
) = strlen (buf
);
3478 /* Unimplemented registers read as all bits zero. */
3479 memset (regs
, 0, rs
->sizeof_g_packet
);
3481 /* We can get out of synch in various cases. If the first character
3482 in the buffer is not a hex character, assume that has happened
3483 and try to fetch another packet to read. */
3484 while ((buf
[0] < '0' || buf
[0] > '9')
3485 && (buf
[0] < 'a' || buf
[0] > 'f')
3486 && buf
[0] != 'x') /* New: unavailable register value */
3489 fprintf_unfiltered (gdb_stdlog
,
3490 "Bad register packet; fetching a new packet\n");
3491 getpkt (buf
, (rs
->remote_packet_size
), 0);
3494 /* Reply describes registers byte by byte, each byte encoded as two
3495 hex characters. Suck them all up, then supply them to the
3496 register cacheing/storage mechanism. */
3499 for (i
= 0; i
< rs
->sizeof_g_packet
; i
++)
3505 warning ("Remote reply is of odd length: %s", buf
);
3506 /* Don't change register_bytes_found in this case, and don't
3507 print a second warning. */
3510 if (p
[0] == 'x' && p
[1] == 'x')
3511 regs
[i
] = 0; /* 'x' */
3513 regs
[i
] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
3517 if (i
!= register_bytes_found
)
3519 register_bytes_found
= i
;
3520 if (REGISTER_BYTES_OK_P ()
3521 && !REGISTER_BYTES_OK (i
))
3522 warning ("Remote reply is too short: %s", buf
);
3528 for (i
= 0; i
< NUM_REGS
+ NUM_PSEUDO_REGS
; i
++)
3530 struct packet_reg
*r
= &rs
->regs
[i
];
3533 supply_register (r
->regnum
, regs
+ r
->offset
);
3534 if (buf
[r
->offset
* 2] == 'x')
3535 set_register_cached (i
, -1);
3541 /* Prepare to store registers. Since we may send them all (using a
3542 'G' request), we have to read out the ones we don't want to change
3546 remote_prepare_to_store (void)
3548 /* Make sure the entire registers array is valid. */
3549 switch (remote_protocol_P
.support
)
3551 case PACKET_DISABLE
:
3552 case PACKET_SUPPORT_UNKNOWN
:
3553 /* NOTE: This isn't rs->sizeof_g_packet because here, we are
3554 forcing the register cache to read its and not the target
3556 read_register_bytes (0, (char *) NULL
, REGISTER_BYTES
); /* OK use. */
3563 /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF
3564 packet was not recognized. */
3567 store_register_using_P (int regnum
)
3569 struct remote_state
*rs
= get_remote_state ();
3570 struct packet_reg
*reg
= packet_reg_from_regnum (rs
, regnum
);
3571 /* Try storing a single register. */
3572 char *buf
= alloca (rs
->remote_packet_size
);
3573 char *regp
= alloca (MAX_REGISTER_RAW_SIZE
);
3577 sprintf (buf
, "P%s=", phex_nz (reg
->pnum
, 0));
3578 p
= buf
+ strlen (buf
);
3579 regcache_collect (reg
->regnum
, regp
);
3580 bin2hex (regp
, p
, REGISTER_RAW_SIZE (reg
->regnum
));
3581 remote_send (buf
, rs
->remote_packet_size
);
3583 return buf
[0] != '\0';
3587 /* Store register REGNUM, or all registers if REGNUM == -1, from the contents
3588 of the register cache buffer. FIXME: ignores errors. */
3591 remote_store_registers (int regnum
)
3593 struct remote_state
*rs
= get_remote_state ();
3599 set_thread (PIDGET (inferior_ptid
), 1);
3603 switch (remote_protocol_P
.support
)
3605 case PACKET_DISABLE
:
3608 if (store_register_using_P (regnum
))
3611 error ("Protocol error: P packet not recognized by stub");
3612 case PACKET_SUPPORT_UNKNOWN
:
3613 if (store_register_using_P (regnum
))
3615 /* The stub recognized the 'P' packet. Remember this. */
3616 remote_protocol_P
.support
= PACKET_ENABLE
;
3621 /* The stub does not support the 'P' packet. Use 'G'
3622 instead, and don't try using 'P' in the future (it
3623 will just waste our time). */
3624 remote_protocol_P
.support
= PACKET_DISABLE
;
3630 /* Extract all the registers in the regcache copying them into a
3634 regs
= alloca (rs
->sizeof_g_packet
);
3635 memset (regs
, rs
->sizeof_g_packet
, 0);
3636 for (i
= 0; i
< NUM_REGS
+ NUM_PSEUDO_REGS
; i
++)
3638 struct packet_reg
*r
= &rs
->regs
[i
];
3640 regcache_collect (r
->regnum
, regs
+ r
->offset
);
3644 /* Command describes registers byte by byte,
3645 each byte encoded as two hex characters. */
3646 buf
= alloca (rs
->remote_packet_size
);
3649 /* remote_prepare_to_store insures that register_bytes_found gets set. */
3650 bin2hex (regs
, p
, register_bytes_found
);
3651 remote_send (buf
, (rs
->remote_packet_size
));
3655 /* Return the number of hex digits in num. */
3658 hexnumlen (ULONGEST num
)
3662 for (i
= 0; num
!= 0; i
++)
3668 /* Set BUF to the minimum number of hex digits representing NUM. */
3671 hexnumstr (char *buf
, ULONGEST num
)
3673 int len
= hexnumlen (num
);
3674 return hexnumnstr (buf
, num
, len
);
3678 /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */
3681 hexnumnstr (char *buf
, ULONGEST num
, int width
)
3687 for (i
= width
- 1; i
>= 0; i
--)
3689 buf
[i
] = "0123456789abcdef"[(num
& 0xf)];
3696 /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */
3699 remote_address_masked (CORE_ADDR addr
)
3701 if (remote_address_size
> 0
3702 && remote_address_size
< (sizeof (ULONGEST
) * 8))
3704 /* Only create a mask when that mask can safely be constructed
3705 in a ULONGEST variable. */
3707 mask
= (mask
<< remote_address_size
) - 1;
3713 /* Determine whether the remote target supports binary downloading.
3714 This is accomplished by sending a no-op memory write of zero length
3715 to the target at the specified address. It does not suffice to send
3716 the whole packet, since many stubs strip the eighth bit and subsequently
3717 compute a wrong checksum, which causes real havoc with remote_write_bytes.
3719 NOTE: This can still lose if the serial line is not eight-bit
3720 clean. In cases like this, the user should clear "remote
3724 check_binary_download (CORE_ADDR addr
)
3726 struct remote_state
*rs
= get_remote_state ();
3727 switch (remote_protocol_binary_download
.support
)
3729 case PACKET_DISABLE
:
3733 case PACKET_SUPPORT_UNKNOWN
:
3735 char *buf
= alloca (rs
->remote_packet_size
);
3740 p
+= hexnumstr (p
, (ULONGEST
) addr
);
3742 p
+= hexnumstr (p
, (ULONGEST
) 0);
3746 putpkt_binary (buf
, (int) (p
- buf
));
3747 getpkt (buf
, (rs
->remote_packet_size
), 0);
3752 fprintf_unfiltered (gdb_stdlog
,
3753 "binary downloading NOT suppported by target\n");
3754 remote_protocol_binary_download
.support
= PACKET_DISABLE
;
3759 fprintf_unfiltered (gdb_stdlog
,
3760 "binary downloading suppported by target\n");
3761 remote_protocol_binary_download
.support
= PACKET_ENABLE
;
3768 /* Write memory data directly to the remote machine.
3769 This does not inform the data cache; the data cache uses this.
3770 MEMADDR is the address in the remote memory space.
3771 MYADDR is the address of the buffer in our space.
3772 LEN is the number of bytes.
3774 Returns number of bytes transferred, or 0 (setting errno) for
3775 error. Only transfer a single packet. */
3778 remote_write_bytes (CORE_ADDR memaddr
, char *myaddr
, int len
)
3781 int max_buf_size
; /* Max size of packet output buffer */
3783 unsigned char *plen
;
3789 /* Verify that the target can support a binary download */
3790 check_binary_download (memaddr
);
3792 /* Determine the max packet size. */
3793 max_buf_size
= get_memory_write_packet_size ();
3794 sizeof_buf
= max_buf_size
+ 1; /* Space for trailing NUL */
3795 buf
= alloca (sizeof_buf
);
3797 /* Subtract header overhead from max payload size - $M<memaddr>,<len>:#nn */
3798 max_buf_size
-= 2 + hexnumlen (memaddr
+ len
- 1) + 1 + hexnumlen (len
) + 4;
3800 /* construct "M"<memaddr>","<len>":" */
3801 /* sprintf (buf, "M%lx,%x:", (unsigned long) memaddr, todo); */
3804 /* Append [XM]. Compute a best guess of the number of bytes
3805 actually transfered. */
3806 switch (remote_protocol_binary_download
.support
)
3810 /* Best guess at number of bytes that will fit. */
3811 todo
= min (len
, max_buf_size
);
3813 case PACKET_DISABLE
:
3815 /* num bytes that will fit */
3816 todo
= min (len
, max_buf_size
/ 2);
3818 case PACKET_SUPPORT_UNKNOWN
:
3819 internal_error (__FILE__
, __LINE__
,
3820 "remote_write_bytes: bad internal state");
3822 internal_error (__FILE__
, __LINE__
, "bad switch");
3825 /* Append <memaddr> */
3826 memaddr
= remote_address_masked (memaddr
);
3827 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
3830 /* Append <len>. Retain the location/size of <len>. It may
3831 need to be adjusted once the packet body has been created. */
3833 plenlen
= hexnumstr (p
, (ULONGEST
) todo
);
3838 /* Append the packet body. */
3839 switch (remote_protocol_binary_download
.support
)
3842 /* Binary mode. Send target system values byte by byte, in
3843 increasing byte addresses. Only escape certain critical
3846 (nr_bytes
< todo
) && (p
- buf
) < (max_buf_size
- 2);
3849 switch (myaddr
[nr_bytes
] & 0xff)
3854 /* These must be escaped */
3856 *p
++ = (myaddr
[nr_bytes
] & 0xff) ^ 0x20;
3859 *p
++ = myaddr
[nr_bytes
] & 0xff;
3863 if (nr_bytes
< todo
)
3865 /* Escape chars have filled up the buffer prematurely,
3866 and we have actually sent fewer bytes than planned.
3867 Fix-up the length field of the packet. Use the same
3868 number of characters as before. */
3870 plen
+= hexnumnstr (plen
, (ULONGEST
) nr_bytes
, plenlen
);
3871 *plen
= ':'; /* overwrite \0 from hexnumnstr() */
3874 case PACKET_DISABLE
:
3875 /* Normal mode: Send target system values byte by byte, in
3876 increasing byte addresses. Each byte is encoded as a two hex
3878 nr_bytes
= bin2hex (myaddr
, p
, todo
);
3881 case PACKET_SUPPORT_UNKNOWN
:
3882 internal_error (__FILE__
, __LINE__
,
3883 "remote_write_bytes: bad internal state");
3885 internal_error (__FILE__
, __LINE__
, "bad switch");
3888 putpkt_binary (buf
, (int) (p
- buf
));
3889 getpkt (buf
, sizeof_buf
, 0);
3893 /* There is no correspondance between what the remote protocol
3894 uses for errors and errno codes. We would like a cleaner way
3895 of representing errors (big enough to include errno codes,
3896 bfd_error codes, and others). But for now just return EIO. */
3901 /* Return NR_BYTES, not TODO, in case escape chars caused us to send fewer
3902 bytes than we'd planned. */
3906 /* Read memory data directly from the remote machine.
3907 This does not use the data cache; the data cache uses this.
3908 MEMADDR is the address in the remote memory space.
3909 MYADDR is the address of the buffer in our space.
3910 LEN is the number of bytes.
3912 Returns number of bytes transferred, or 0 for error. */
3914 /* NOTE: cagney/1999-10-18: This function (and its siblings in other
3915 remote targets) shouldn't attempt to read the entire buffer.
3916 Instead it should read a single packet worth of data and then
3917 return the byte size of that packet to the caller. The caller (its
3918 caller and its callers caller ;-) already contains code for
3919 handling partial reads. */
3922 remote_read_bytes (CORE_ADDR memaddr
, char *myaddr
, int len
)
3925 int max_buf_size
; /* Max size of packet output buffer */
3929 /* Create a buffer big enough for this packet. */
3930 max_buf_size
= get_memory_read_packet_size ();
3931 sizeof_buf
= max_buf_size
+ 1; /* Space for trailing NUL */
3932 buf
= alloca (sizeof_buf
);
3941 todo
= min (len
, max_buf_size
/ 2); /* num bytes that will fit */
3943 /* construct "m"<memaddr>","<len>" */
3944 /* sprintf (buf, "m%lx,%x", (unsigned long) memaddr, todo); */
3945 memaddr
= remote_address_masked (memaddr
);
3948 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
3950 p
+= hexnumstr (p
, (ULONGEST
) todo
);
3954 getpkt (buf
, sizeof_buf
, 0);
3958 /* There is no correspondance between what the remote protocol uses
3959 for errors and errno codes. We would like a cleaner way of
3960 representing errors (big enough to include errno codes, bfd_error
3961 codes, and others). But for now just return EIO. */
3966 /* Reply describes memory byte by byte,
3967 each byte encoded as two hex characters. */
3970 if ((i
= hex2bin (p
, myaddr
, todo
)) < todo
)
3972 /* Reply is short. This means that we were able to read
3973 only part of what we wanted to. */
3974 return i
+ (origlen
- len
);
3983 /* Read or write LEN bytes from inferior memory at MEMADDR,
3984 transferring to or from debugger address BUFFER. Write to inferior if
3985 SHOULD_WRITE is nonzero. Returns length of data written or read; 0
3986 for error. TARGET is unused. */
3990 remote_xfer_memory (CORE_ADDR mem_addr
, char *buffer
, int mem_len
,
3991 int should_write
, struct mem_attrib
*attrib
,
3992 struct target_ops
*target
)
3994 CORE_ADDR targ_addr
;
3998 REMOTE_TRANSLATE_XFER_ADDRESS (mem_addr
, mem_len
, &targ_addr
, &targ_len
);
4003 res
= remote_write_bytes (targ_addr
, buffer
, targ_len
);
4005 res
= remote_read_bytes (targ_addr
, buffer
, targ_len
);
4012 /* Enable after 4.12. */
4015 remote_search (int len
, char *data
, char *mask
, CORE_ADDR startaddr
,
4016 int increment
, CORE_ADDR lorange
, CORE_ADDR hirange
,
4017 CORE_ADDR
*addr_found
, char *data_found
)
4019 if (increment
== -4 && len
== 4)
4021 long mask_long
, data_long
;
4022 long data_found_long
;
4023 CORE_ADDR addr_we_found
;
4024 char *buf
= alloca (rs
->remote_packet_size
);
4025 long returned_long
[2];
4028 mask_long
= extract_unsigned_integer (mask
, len
);
4029 data_long
= extract_unsigned_integer (data
, len
);
4030 sprintf (buf
, "t%x:%x,%x", startaddr
, data_long
, mask_long
);
4032 getpkt (buf
, (rs
->remote_packet_size
), 0);
4035 /* The stub doesn't support the 't' request. We might want to
4036 remember this fact, but on the other hand the stub could be
4037 switched on us. Maybe we should remember it only until
4038 the next "target remote". */
4039 generic_search (len
, data
, mask
, startaddr
, increment
, lorange
,
4040 hirange
, addr_found
, data_found
);
4045 /* There is no correspondance between what the remote protocol uses
4046 for errors and errno codes. We would like a cleaner way of
4047 representing errors (big enough to include errno codes, bfd_error
4048 codes, and others). But for now just use EIO. */
4049 memory_error (EIO
, startaddr
);
4052 while (*p
!= '\0' && *p
!= ',')
4053 addr_we_found
= (addr_we_found
<< 4) + fromhex (*p
++);
4055 error ("Protocol error: short return for search");
4057 data_found_long
= 0;
4058 while (*p
!= '\0' && *p
!= ',')
4059 data_found_long
= (data_found_long
<< 4) + fromhex (*p
++);
4060 /* Ignore anything after this comma, for future extensions. */
4062 if (addr_we_found
< lorange
|| addr_we_found
>= hirange
)
4068 *addr_found
= addr_we_found
;
4069 *data_found
= store_unsigned_integer (data_we_found
, len
);
4072 generic_search (len
, data
, mask
, startaddr
, increment
, lorange
,
4073 hirange
, addr_found
, data_found
);
4078 remote_files_info (struct target_ops
*ignore
)
4080 puts_filtered ("Debugging a target over a serial line.\n");
4083 /* Stuff for dealing with the packets which are part of this protocol.
4084 See comment at top of file for details. */
4086 /* Read a single character from the remote end, masking it down to 7 bits. */
4089 readchar (int timeout
)
4093 ch
= serial_readchar (remote_desc
, timeout
);
4098 switch ((enum serial_rc
) ch
)
4101 target_mourn_inferior ();
4102 error ("Remote connection closed");
4105 perror_with_name ("Remote communication error");
4107 case SERIAL_TIMEOUT
:
4113 /* Send the command in BUF to the remote machine, and read the reply
4114 into BUF. Report an error if we get an error reply. */
4117 remote_send (char *buf
,
4121 getpkt (buf
, sizeof_buf
, 0);
4124 error ("Remote failure reply: %s", buf
);
4127 /* Display a null-terminated packet on stdout, for debugging, using C
4131 print_packet (char *buf
)
4133 puts_filtered ("\"");
4134 fputstr_filtered (buf
, '"', gdb_stdout
);
4135 puts_filtered ("\"");
4141 return putpkt_binary (buf
, strlen (buf
));
4144 /* Send a packet to the remote machine, with error checking. The data
4145 of the packet is in BUF. The string in BUF can be at most (rs->remote_packet_size) - 5
4146 to account for the $, # and checksum, and for a possible /0 if we are
4147 debugging (remote_debug) and want to print the sent packet as a string */
4150 putpkt_binary (char *buf
, int cnt
)
4152 struct remote_state
*rs
= get_remote_state ();
4154 unsigned char csum
= 0;
4155 char *buf2
= alloca (cnt
+ 6);
4156 long sizeof_junkbuf
= (rs
->remote_packet_size
);
4157 char *junkbuf
= alloca (sizeof_junkbuf
);
4163 /* Copy the packet into buffer BUF2, encapsulating it
4164 and giving it a checksum. */
4169 for (i
= 0; i
< cnt
; i
++)
4175 *p
++ = tohex ((csum
>> 4) & 0xf);
4176 *p
++ = tohex (csum
& 0xf);
4178 /* Send it over and over until we get a positive ack. */
4182 int started_error_output
= 0;
4187 fprintf_unfiltered (gdb_stdlog
, "Sending packet: ");
4188 fputstrn_unfiltered (buf2
, p
- buf2
, 0, gdb_stdlog
);
4189 fprintf_unfiltered (gdb_stdlog
, "...");
4190 gdb_flush (gdb_stdlog
);
4192 if (serial_write (remote_desc
, buf2
, p
- buf2
))
4193 perror_with_name ("putpkt: write failed");
4195 /* read until either a timeout occurs (-2) or '+' is read */
4198 ch
= readchar (remote_timeout
);
4206 case SERIAL_TIMEOUT
:
4208 if (started_error_output
)
4210 putchar_unfiltered ('\n');
4211 started_error_output
= 0;
4220 fprintf_unfiltered (gdb_stdlog
, "Ack\n");
4224 fprintf_unfiltered (gdb_stdlog
, "Nak\n");
4225 case SERIAL_TIMEOUT
:
4229 break; /* Retransmit buffer */
4233 fprintf_unfiltered (gdb_stdlog
, "Packet instead of Ack, ignoring it\n");
4234 /* It's probably an old response, and we're out of sync.
4235 Just gobble up the packet and ignore it. */
4236 read_frame (junkbuf
, sizeof_junkbuf
);
4237 continue; /* Now, go look for + */
4242 if (!started_error_output
)
4244 started_error_output
= 1;
4245 fprintf_unfiltered (gdb_stdlog
, "putpkt: Junk: ");
4247 fputc_unfiltered (ch
& 0177, gdb_stdlog
);
4251 break; /* Here to retransmit */
4255 /* This is wrong. If doing a long backtrace, the user should be
4256 able to get out next time we call QUIT, without anything as
4257 violent as interrupt_query. If we want to provide a way out of
4258 here without getting to the next QUIT, it should be based on
4259 hitting ^C twice as in remote_wait. */
4269 static int remote_cisco_mode
;
4271 /* Come here after finding the start of the frame. Collect the rest
4272 into BUF, verifying the checksum, length, and handling run-length
4273 compression. No more than sizeof_buf-1 characters are read so that
4274 the buffer can be NUL terminated.
4276 Returns -1 on error, number of characters in buffer (ignoring the
4277 trailing NULL) on success. (could be extended to return one of the
4278 SERIAL status indications). */
4281 read_frame (char *buf
,
4293 /* ASSERT (bc < sizeof_buf - 1) - space for trailing NUL */
4294 c
= readchar (remote_timeout
);
4297 case SERIAL_TIMEOUT
:
4299 fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog
);
4303 fputs_filtered ("Saw new packet start in middle of old one\n",
4305 return -1; /* Start a new packet, count retries */
4308 unsigned char pktcsum
;
4314 check_0
= readchar (remote_timeout
);
4316 check_1
= readchar (remote_timeout
);
4318 if (check_0
== SERIAL_TIMEOUT
|| check_1
== SERIAL_TIMEOUT
)
4321 fputs_filtered ("Timeout in checksum, retrying\n", gdb_stdlog
);
4324 else if (check_0
< 0 || check_1
< 0)
4327 fputs_filtered ("Communication error in checksum\n", gdb_stdlog
);
4331 pktcsum
= (fromhex (check_0
) << 4) | fromhex (check_1
);
4332 if (csum
== pktcsum
)
4337 fprintf_filtered (gdb_stdlog
,
4338 "Bad checksum, sentsum=0x%x, csum=0x%x, buf=",
4340 fputs_filtered (buf
, gdb_stdlog
);
4341 fputs_filtered ("\n", gdb_stdlog
);
4343 /* Number of characters in buffer ignoring trailing
4347 case '*': /* Run length encoding */
4352 if (remote_cisco_mode
== 0)
4354 c
= readchar (remote_timeout
);
4356 repeat
= c
- ' ' + 3; /* Compute repeat count */
4360 /* Cisco's run-length encoding variant uses two
4361 hex chars to represent the repeat count. */
4363 c
= readchar (remote_timeout
);
4365 repeat
= fromhex (c
) << 4;
4366 c
= readchar (remote_timeout
);
4368 repeat
+= fromhex (c
);
4371 /* The character before ``*'' is repeated. */
4373 if (repeat
> 0 && repeat
<= 255
4375 && bc
+ repeat
- 1 < sizeof_buf
- 1)
4377 memset (&buf
[bc
], buf
[bc
- 1], repeat
);
4383 printf_filtered ("Repeat count %d too large for buffer: ", repeat
);
4384 puts_filtered (buf
);
4385 puts_filtered ("\n");
4389 if (bc
< sizeof_buf
- 1)
4397 puts_filtered ("Remote packet too long: ");
4398 puts_filtered (buf
);
4399 puts_filtered ("\n");
4406 /* Read a packet from the remote machine, with error checking, and
4407 store it in BUF. If FOREVER, wait forever rather than timing out;
4408 this is used (in synchronous mode) to wait for a target that is is
4409 executing user code to stop. */
4410 /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we
4411 don't have to change all the calls to getpkt to deal with the
4412 return value, because at the moment I don't know what the right
4413 thing to do it for those. */
4421 timed_out
= getpkt_sane (buf
, sizeof_buf
, forever
);
4425 /* Read a packet from the remote machine, with error checking, and
4426 store it in BUF. If FOREVER, wait forever rather than timing out;
4427 this is used (in synchronous mode) to wait for a target that is is
4428 executing user code to stop. If FOREVER == 0, this function is
4429 allowed to time out gracefully and return an indication of this to
4432 getpkt_sane (char *buf
,
4441 strcpy (buf
, "timeout");
4445 timeout
= watchdog
> 0 ? watchdog
: -1;
4449 timeout
= remote_timeout
;
4453 for (tries
= 1; tries
<= MAX_TRIES
; tries
++)
4455 /* This can loop forever if the remote side sends us characters
4456 continuously, but if it pauses, we'll get a zero from readchar
4457 because of timeout. Then we'll count that as a retry. */
4459 /* Note that we will only wait forever prior to the start of a packet.
4460 After that, we expect characters to arrive at a brisk pace. They
4461 should show up within remote_timeout intervals. */
4465 c
= readchar (timeout
);
4467 if (c
== SERIAL_TIMEOUT
)
4469 if (forever
) /* Watchdog went off? Kill the target. */
4472 target_mourn_inferior ();
4473 error ("Watchdog has expired. Target detached.\n");
4476 fputs_filtered ("Timed out.\n", gdb_stdlog
);
4482 /* We've found the start of a packet, now collect the data. */
4484 val
= read_frame (buf
, sizeof_buf
);
4490 fprintf_unfiltered (gdb_stdlog
, "Packet received: ");
4491 fputstr_unfiltered (buf
, 0, gdb_stdlog
);
4492 fprintf_unfiltered (gdb_stdlog
, "\n");
4494 serial_write (remote_desc
, "+", 1);
4498 /* Try the whole thing again. */
4500 serial_write (remote_desc
, "-", 1);
4503 /* We have tried hard enough, and just can't receive the packet. Give up. */
4505 printf_unfiltered ("Ignoring packet error, continuing...\n");
4506 serial_write (remote_desc
, "+", 1);
4513 /* For some mysterious reason, wait_for_inferior calls kill instead of
4514 mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */
4518 target_mourn_inferior ();
4522 /* Use catch_errors so the user can quit from gdb even when we aren't on
4523 speaking terms with the remote system. */
4524 catch_errors ((catch_errors_ftype
*) putpkt
, "k", "", RETURN_MASK_ERROR
);
4526 /* Don't wait for it to die. I'm not really sure it matters whether
4527 we do or not. For the existing stubs, kill is a noop. */
4528 target_mourn_inferior ();
4531 /* Async version of remote_kill. */
4533 remote_async_kill (void)
4535 /* Unregister the file descriptor from the event loop. */
4536 if (target_is_async_p ())
4537 serial_async (remote_desc
, NULL
, 0);
4539 /* For some mysterious reason, wait_for_inferior calls kill instead of
4540 mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */
4544 target_mourn_inferior ();
4548 /* Use catch_errors so the user can quit from gdb even when we aren't on
4549 speaking terms with the remote system. */
4550 catch_errors ((catch_errors_ftype
*) putpkt
, "k", "", RETURN_MASK_ERROR
);
4552 /* Don't wait for it to die. I'm not really sure it matters whether
4553 we do or not. For the existing stubs, kill is a noop. */
4554 target_mourn_inferior ();
4560 remote_mourn_1 (&remote_ops
);
4564 remote_async_mourn (void)
4566 remote_mourn_1 (&remote_async_ops
);
4570 extended_remote_mourn (void)
4572 /* We do _not_ want to mourn the target like this; this will
4573 remove the extended remote target from the target stack,
4574 and the next time the user says "run" it'll fail.
4576 FIXME: What is the right thing to do here? */
4578 remote_mourn_1 (&extended_remote_ops
);
4582 /* Worker function for remote_mourn. */
4584 remote_mourn_1 (struct target_ops
*target
)
4586 unpush_target (target
);
4587 generic_mourn_inferior ();
4590 /* In the extended protocol we want to be able to do things like
4591 "run" and have them basically work as expected. So we need
4592 a special create_inferior function.
4594 FIXME: One day add support for changing the exec file
4595 we're debugging, arguments and an environment. */
4598 extended_remote_create_inferior (char *exec_file
, char *args
, char **env
)
4600 /* Rip out the breakpoints; we'll reinsert them after restarting
4601 the remote server. */
4602 remove_breakpoints ();
4604 /* Now restart the remote server. */
4605 extended_remote_restart ();
4607 /* Now put the breakpoints back in. This way we're safe if the
4608 restart function works via a unix fork on the remote side. */
4609 insert_breakpoints ();
4611 /* Clean up from the last time we were running. */
4612 clear_proceed_status ();
4614 /* Let the remote process run. */
4615 proceed (-1, TARGET_SIGNAL_0
, 0);
4618 /* Async version of extended_remote_create_inferior. */
4620 extended_remote_async_create_inferior (char *exec_file
, char *args
, char **env
)
4622 /* Rip out the breakpoints; we'll reinsert them after restarting
4623 the remote server. */
4624 remove_breakpoints ();
4626 /* If running asynchronously, register the target file descriptor
4627 with the event loop. */
4628 if (event_loop_p
&& target_can_async_p ())
4629 target_async (inferior_event_handler
, 0);
4631 /* Now restart the remote server. */
4632 extended_remote_restart ();
4634 /* Now put the breakpoints back in. This way we're safe if the
4635 restart function works via a unix fork on the remote side. */
4636 insert_breakpoints ();
4638 /* Clean up from the last time we were running. */
4639 clear_proceed_status ();
4641 /* Let the remote process run. */
4642 proceed (-1, TARGET_SIGNAL_0
, 0);
4646 /* On some machines, e.g. 68k, we may use a different breakpoint instruction
4647 than other targets; in those use REMOTE_BREAKPOINT instead of just
4648 BREAKPOINT. Also, bi-endian targets may define LITTLE_REMOTE_BREAKPOINT
4649 and BIG_REMOTE_BREAKPOINT. If none of these are defined, we just call
4650 the standard routines that are in mem-break.c. */
4652 /* FIXME, these ought to be done in a more dynamic fashion. For instance,
4653 the choice of breakpoint instruction affects target program design and
4654 vice versa, and by making it user-tweakable, the special code here
4655 goes away and we need fewer special GDB configurations. */
4657 #if defined (LITTLE_REMOTE_BREAKPOINT) && defined (BIG_REMOTE_BREAKPOINT) && !defined(REMOTE_BREAKPOINT)
4658 #define REMOTE_BREAKPOINT
4661 #ifdef REMOTE_BREAKPOINT
4663 /* If the target isn't bi-endian, just pretend it is. */
4664 #if !defined (LITTLE_REMOTE_BREAKPOINT) && !defined (BIG_REMOTE_BREAKPOINT)
4665 #define LITTLE_REMOTE_BREAKPOINT REMOTE_BREAKPOINT
4666 #define BIG_REMOTE_BREAKPOINT REMOTE_BREAKPOINT
4669 static unsigned char big_break_insn
[] = BIG_REMOTE_BREAKPOINT
;
4670 static unsigned char little_break_insn
[] = LITTLE_REMOTE_BREAKPOINT
;
4672 #endif /* REMOTE_BREAKPOINT */
4674 /* Insert a breakpoint on targets that don't have any better breakpoint
4675 support. We read the contents of the target location and stash it,
4676 then overwrite it with a breakpoint instruction. ADDR is the target
4677 location in the target machine. CONTENTS_CACHE is a pointer to
4678 memory allocated for saving the target contents. It is guaranteed
4679 by the caller to be long enough to save sizeof BREAKPOINT bytes (this
4680 is accomplished via BREAKPOINT_MAX). */
4683 remote_insert_breakpoint (CORE_ADDR addr
, char *contents_cache
)
4685 struct remote_state
*rs
= get_remote_state ();
4686 #ifdef REMOTE_BREAKPOINT
4691 /* Try the "Z" s/w breakpoint packet if it is not already disabled.
4692 If it succeeds, then set the support to PACKET_ENABLE. If it
4693 fails, and the user has explicitly requested the Z support then
4694 report an error, otherwise, mark it disabled and go on. */
4696 if (remote_protocol_Z
[Z_PACKET_SOFTWARE_BP
].support
!= PACKET_DISABLE
)
4698 char *buf
= alloca (rs
->remote_packet_size
);
4701 addr
= remote_address_masked (addr
);
4705 p
+= hexnumstr (p
, (ULONGEST
) addr
);
4706 BREAKPOINT_FROM_PC (&addr
, &bp_size
);
4707 sprintf (p
, ",%d", bp_size
);
4710 getpkt (buf
, (rs
->remote_packet_size
), 0);
4712 switch (packet_ok (buf
, &remote_protocol_Z
[Z_PACKET_SOFTWARE_BP
]))
4718 case PACKET_UNKNOWN
:
4723 #ifdef REMOTE_BREAKPOINT
4724 val
= target_read_memory (addr
, contents_cache
, sizeof big_break_insn
);
4728 if (TARGET_BYTE_ORDER
== BFD_ENDIAN_BIG
)
4729 val
= target_write_memory (addr
, (char *) big_break_insn
,
4730 sizeof big_break_insn
);
4732 val
= target_write_memory (addr
, (char *) little_break_insn
,
4733 sizeof little_break_insn
);
4738 return memory_insert_breakpoint (addr
, contents_cache
);
4739 #endif /* REMOTE_BREAKPOINT */
4743 remote_remove_breakpoint (CORE_ADDR addr
, char *contents_cache
)
4745 struct remote_state
*rs
= get_remote_state ();
4748 if (remote_protocol_Z
[Z_PACKET_SOFTWARE_BP
].support
!= PACKET_DISABLE
)
4750 char *buf
= alloca (rs
->remote_packet_size
);
4757 addr
= remote_address_masked (addr
);
4758 p
+= hexnumstr (p
, (ULONGEST
) addr
);
4759 BREAKPOINT_FROM_PC (&addr
, &bp_size
);
4760 sprintf (p
, ",%d", bp_size
);
4763 getpkt (buf
, (rs
->remote_packet_size
), 0);
4765 return (buf
[0] == 'E');
4768 #ifdef REMOTE_BREAKPOINT
4769 return target_write_memory (addr
, contents_cache
, sizeof big_break_insn
);
4771 return memory_remove_breakpoint (addr
, contents_cache
);
4772 #endif /* REMOTE_BREAKPOINT */
4776 watchpoint_to_Z_packet (int type
)
4790 internal_error (__FILE__
, __LINE__
,
4791 "hw_bp_to_z: bad watchpoint type %d", type
);
4795 /* FIXME: This function should be static and a member of the remote
4799 remote_insert_watchpoint (CORE_ADDR addr
, int len
, int type
)
4801 struct remote_state
*rs
= get_remote_state ();
4802 char *buf
= alloca (rs
->remote_packet_size
);
4804 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
4806 if (remote_protocol_Z
[packet
].support
== PACKET_DISABLE
)
4807 error ("Can't set hardware watchpoints without the '%s' (%s) packet\n",
4808 remote_protocol_Z
[packet
].name
,
4809 remote_protocol_Z
[packet
].title
);
4811 sprintf (buf
, "Z%x,", packet
);
4812 p
= strchr (buf
, '\0');
4813 addr
= remote_address_masked (addr
);
4814 p
+= hexnumstr (p
, (ULONGEST
) addr
);
4815 sprintf (p
, ",%x", len
);
4818 getpkt (buf
, (rs
->remote_packet_size
), 0);
4820 switch (packet_ok (buf
, &remote_protocol_Z
[packet
]))
4823 case PACKET_UNKNOWN
:
4828 internal_error (__FILE__
, __LINE__
,
4829 "remote_insert_watchpoint: reached end of function");
4832 /* FIXME: This function should be static and a member of the remote
4836 remote_remove_watchpoint (CORE_ADDR addr
, int len
, int type
)
4838 struct remote_state
*rs
= get_remote_state ();
4839 char *buf
= alloca (rs
->remote_packet_size
);
4841 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
4843 if (remote_protocol_Z
[packet
].support
== PACKET_DISABLE
)
4844 error ("Can't clear hardware watchpoints without the '%s' (%s) packet\n",
4845 remote_protocol_Z
[packet
].name
,
4846 remote_protocol_Z
[packet
].title
);
4848 sprintf (buf
, "z%x,", packet
);
4849 p
= strchr (buf
, '\0');
4850 addr
= remote_address_masked (addr
);
4851 p
+= hexnumstr (p
, (ULONGEST
) addr
);
4852 sprintf (p
, ",%x", len
);
4854 getpkt (buf
, (rs
->remote_packet_size
), 0);
4856 switch (packet_ok (buf
, &remote_protocol_Z
[packet
]))
4859 case PACKET_UNKNOWN
:
4864 internal_error (__FILE__
, __LINE__
,
4865 "remote_remove_watchpoint: reached end of function");
4868 /* FIXME: This function should be static and a member of the remote
4872 remote_insert_hw_breakpoint (CORE_ADDR addr
, int len
)
4874 struct remote_state
*rs
= get_remote_state ();
4875 char *buf
= alloca (rs
->remote_packet_size
);
4878 if (remote_protocol_Z
[Z_PACKET_HARDWARE_BP
].support
== PACKET_DISABLE
)
4879 error ("Can't set hardware breakpoint without the '%s' (%s) packet\n",
4880 remote_protocol_Z
[Z_PACKET_HARDWARE_BP
].name
,
4881 remote_protocol_Z
[Z_PACKET_HARDWARE_BP
].title
);
4887 addr
= remote_address_masked (addr
);
4888 p
+= hexnumstr (p
, (ULONGEST
) addr
);
4889 sprintf (p
, ",%x", len
);
4892 getpkt (buf
, (rs
->remote_packet_size
), 0);
4894 switch (packet_ok (buf
, &remote_protocol_Z
[Z_PACKET_HARDWARE_BP
]))
4897 case PACKET_UNKNOWN
:
4902 internal_error (__FILE__
, __LINE__
,
4903 "remote_remove_watchpoint: reached end of function");
4906 /* FIXME: This function should be static and a member of the remote
4910 remote_remove_hw_breakpoint (CORE_ADDR addr
, int len
)
4912 struct remote_state
*rs
= get_remote_state ();
4913 char *buf
= alloca (rs
->remote_packet_size
);
4916 if (remote_protocol_Z
[Z_PACKET_HARDWARE_BP
].support
== PACKET_DISABLE
)
4917 error ("Can't clear hardware breakpoint without the '%s' (%s) packet\n",
4918 remote_protocol_Z
[Z_PACKET_HARDWARE_BP
].name
,
4919 remote_protocol_Z
[Z_PACKET_HARDWARE_BP
].title
);
4925 addr
= remote_address_masked (addr
);
4926 p
+= hexnumstr (p
, (ULONGEST
) addr
);
4927 sprintf (p
, ",%x", len
);
4930 getpkt (buf
, (rs
->remote_packet_size
), 0);
4932 switch (packet_ok (buf
, &remote_protocol_Z
[Z_PACKET_HARDWARE_BP
]))
4935 case PACKET_UNKNOWN
:
4940 internal_error (__FILE__
, __LINE__
,
4941 "remote_remove_watchpoint: reached end of function");
4944 /* Some targets are only capable of doing downloads, and afterwards
4945 they switch to the remote serial protocol. This function provides
4946 a clean way to get from the download target to the remote target.
4947 It's basically just a wrapper so that we don't have to expose any
4948 of the internal workings of remote.c.
4950 Prior to calling this routine, you should shutdown the current
4951 target code, else you will get the "A program is being debugged
4952 already..." message. Usually a call to pop_target() suffices. */
4955 push_remote_target (char *name
, int from_tty
)
4957 printf_filtered ("Switching to remote protocol\n");
4958 remote_open (name
, from_tty
);
4961 /* Other targets want to use the entire remote serial module but with
4962 certain remote_ops overridden. */
4965 open_remote_target (char *name
, int from_tty
, struct target_ops
*target
,
4968 printf_filtered ("Selecting the %sremote protocol\n",
4969 (extended_p
? "extended-" : ""));
4970 remote_open_1 (name
, from_tty
, target
, extended_p
);
4973 /* Table used by the crc32 function to calcuate the checksum. */
4975 static unsigned long crc32_table
[256] =
4978 static unsigned long
4979 crc32 (unsigned char *buf
, int len
, unsigned int crc
)
4981 if (!crc32_table
[1])
4983 /* Initialize the CRC table and the decoding table. */
4987 for (i
= 0; i
< 256; i
++)
4989 for (c
= i
<< 24, j
= 8; j
> 0; --j
)
4990 c
= c
& 0x80000000 ? (c
<< 1) ^ 0x04c11db7 : (c
<< 1);
4997 crc
= (crc
<< 8) ^ crc32_table
[((crc
>> 24) ^ *buf
) & 255];
5003 /* compare-sections command
5005 With no arguments, compares each loadable section in the exec bfd
5006 with the same memory range on the target, and reports mismatches.
5007 Useful for verifying the image on the target against the exec file.
5008 Depends on the target understanding the new "qCRC:" request. */
5010 /* FIXME: cagney/1999-10-26: This command should be broken down into a
5011 target method (target verify memory) and generic version of the
5012 actual command. This will allow other high-level code (especially
5013 generic_load()) to make use of this target functionality. */
5016 compare_sections_command (char *args
, int from_tty
)
5018 struct remote_state
*rs
= get_remote_state ();
5020 unsigned long host_crc
, target_crc
;
5021 extern bfd
*exec_bfd
;
5022 struct cleanup
*old_chain
;
5025 const char *sectname
;
5026 char *buf
= alloca (rs
->remote_packet_size
);
5033 error ("command cannot be used without an exec file");
5034 if (!current_target
.to_shortname
||
5035 strcmp (current_target
.to_shortname
, "remote") != 0)
5036 error ("command can only be used with remote target");
5038 for (s
= exec_bfd
->sections
; s
; s
= s
->next
)
5040 if (!(s
->flags
& SEC_LOAD
))
5041 continue; /* skip non-loadable section */
5043 size
= bfd_get_section_size_before_reloc (s
);
5045 continue; /* skip zero-length section */
5047 sectname
= bfd_get_section_name (exec_bfd
, s
);
5048 if (args
&& strcmp (args
, sectname
) != 0)
5049 continue; /* not the section selected by user */
5051 matched
= 1; /* do this section */
5053 /* FIXME: assumes lma can fit into long */
5054 sprintf (buf
, "qCRC:%lx,%lx", (long) lma
, (long) size
);
5057 /* be clever; compute the host_crc before waiting for target reply */
5058 sectdata
= xmalloc (size
);
5059 old_chain
= make_cleanup (xfree
, sectdata
);
5060 bfd_get_section_contents (exec_bfd
, s
, sectdata
, 0, size
);
5061 host_crc
= crc32 ((unsigned char *) sectdata
, size
, 0xffffffff);
5063 getpkt (buf
, (rs
->remote_packet_size
), 0);
5065 error ("target memory fault, section %s, range 0x%s -- 0x%s",
5066 sectname
, paddr (lma
), paddr (lma
+ size
));
5068 error ("remote target does not support this operation");
5070 for (target_crc
= 0, tmp
= &buf
[1]; *tmp
; tmp
++)
5071 target_crc
= target_crc
* 16 + fromhex (*tmp
);
5073 printf_filtered ("Section %s, range 0x%s -- 0x%s: ",
5074 sectname
, paddr (lma
), paddr (lma
+ size
));
5075 if (host_crc
== target_crc
)
5076 printf_filtered ("matched.\n");
5079 printf_filtered ("MIS-MATCHED!\n");
5083 do_cleanups (old_chain
);
5086 warning ("One or more sections of the remote executable does not match\n\
5087 the loaded file\n");
5088 if (args
&& !matched
)
5089 printf_filtered ("No loaded section named '%s'.\n", args
);
5093 remote_query (int query_type
, char *buf
, char *outbuf
, int *bufsiz
)
5095 struct remote_state
*rs
= get_remote_state ();
5097 char *buf2
= alloca (rs
->remote_packet_size
);
5098 char *p2
= &buf2
[0];
5101 error ("null pointer to remote bufer size specified");
5103 /* minimum outbuf size is (rs->remote_packet_size) - if bufsiz is not large enough let
5104 the caller know and return what the minimum size is */
5105 /* Note: a zero bufsiz can be used to query the minimum buffer size */
5106 if (*bufsiz
< (rs
->remote_packet_size
))
5108 *bufsiz
= (rs
->remote_packet_size
);
5112 /* except for querying the minimum buffer size, target must be open */
5114 error ("remote query is only available after target open");
5116 /* we only take uppercase letters as query types, at least for now */
5117 if ((query_type
< 'A') || (query_type
> 'Z'))
5118 error ("invalid remote query type");
5121 error ("null remote query specified");
5124 error ("remote query requires a buffer to receive data");
5131 /* we used one buffer char for the remote protocol q command and another
5132 for the query type. As the remote protocol encapsulation uses 4 chars
5133 plus one extra in case we are debugging (remote_debug),
5134 we have PBUFZIZ - 7 left to pack the query string */
5136 while (buf
[i
] && (i
< ((rs
->remote_packet_size
) - 8)))
5138 /* bad caller may have sent forbidden characters */
5139 if ((!isprint (buf
[i
])) || (buf
[i
] == '$') || (buf
[i
] == '#'))
5140 error ("illegal characters in query string");
5148 error ("query larger than available buffer");
5154 getpkt (outbuf
, *bufsiz
, 0);
5160 remote_rcmd (char *command
,
5161 struct ui_file
*outbuf
)
5163 struct remote_state
*rs
= get_remote_state ();
5165 char *buf
= alloca (rs
->remote_packet_size
);
5169 error ("remote rcmd is only available after target open");
5171 /* Send a NULL command across as an empty command */
5172 if (command
== NULL
)
5175 /* The query prefix */
5176 strcpy (buf
, "qRcmd,");
5177 p
= strchr (buf
, '\0');
5179 if ((strlen (buf
) + strlen (command
) * 2 + 8/*misc*/) > (rs
->remote_packet_size
))
5180 error ("\"monitor\" command ``%s'' is too long\n", command
);
5182 /* Encode the actual command */
5183 bin2hex (command
, p
, 0);
5185 if (putpkt (buf
) < 0)
5186 error ("Communication problem with target\n");
5188 /* get/display the response */
5191 /* XXX - see also tracepoint.c:remote_get_noisy_reply() */
5193 getpkt (buf
, (rs
->remote_packet_size
), 0);
5195 error ("Target does not support this command\n");
5196 if (buf
[0] == 'O' && buf
[1] != 'K')
5198 remote_console_output (buf
+ 1); /* 'O' message from stub */
5201 if (strcmp (buf
, "OK") == 0)
5203 if (strlen (buf
) == 3 && buf
[0] == 'E'
5204 && isdigit (buf
[1]) && isdigit (buf
[2]))
5206 error ("Protocol error with Rcmd");
5208 for (p
= buf
; p
[0] != '\0' && p
[1] != '\0'; p
+= 2)
5210 char c
= (fromhex (p
[0]) << 4) + fromhex (p
[1]);
5211 fputc_unfiltered (c
, outbuf
);
5218 packet_command (char *args
, int from_tty
)
5220 struct remote_state
*rs
= get_remote_state ();
5221 char *buf
= alloca (rs
->remote_packet_size
);
5224 error ("command can only be used with remote target");
5227 error ("remote-packet command requires packet text as argument");
5229 puts_filtered ("sending: ");
5230 print_packet (args
);
5231 puts_filtered ("\n");
5234 getpkt (buf
, (rs
->remote_packet_size
), 0);
5235 puts_filtered ("received: ");
5237 puts_filtered ("\n");
5241 /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------------- */
5243 static void display_thread_info (struct gdb_ext_thread_info
*info
);
5245 static void threadset_test_cmd (char *cmd
, int tty
);
5247 static void threadalive_test (char *cmd
, int tty
);
5249 static void threadlist_test_cmd (char *cmd
, int tty
);
5251 int get_and_display_threadinfo (threadref
* ref
);
5253 static void threadinfo_test_cmd (char *cmd
, int tty
);
5255 static int thread_display_step (threadref
* ref
, void *context
);
5257 static void threadlist_update_test_cmd (char *cmd
, int tty
);
5259 static void init_remote_threadtests (void);
5261 #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid */
5264 threadset_test_cmd (char *cmd
, int tty
)
5266 int sample_thread
= SAMPLE_THREAD
;
5268 printf_filtered ("Remote threadset test\n");
5269 set_thread (sample_thread
, 1);
5274 threadalive_test (char *cmd
, int tty
)
5276 int sample_thread
= SAMPLE_THREAD
;
5278 if (remote_thread_alive (pid_to_ptid (sample_thread
)))
5279 printf_filtered ("PASS: Thread alive test\n");
5281 printf_filtered ("FAIL: Thread alive test\n");
5284 void output_threadid (char *title
, threadref
* ref
);
5287 output_threadid (char *title
, threadref
*ref
)
5291 pack_threadid (&hexid
[0], ref
); /* Convert threead id into hex */
5293 printf_filtered ("%s %s\n", title
, (&hexid
[0]));
5297 threadlist_test_cmd (char *cmd
, int tty
)
5300 threadref nextthread
;
5301 int done
, result_count
;
5302 threadref threadlist
[3];
5304 printf_filtered ("Remote Threadlist test\n");
5305 if (!remote_get_threadlist (startflag
, &nextthread
, 3, &done
,
5306 &result_count
, &threadlist
[0]))
5307 printf_filtered ("FAIL: threadlist test\n");
5310 threadref
*scan
= threadlist
;
5311 threadref
*limit
= scan
+ result_count
;
5313 while (scan
< limit
)
5314 output_threadid (" thread ", scan
++);
5319 display_thread_info (struct gdb_ext_thread_info
*info
)
5321 output_threadid ("Threadid: ", &info
->threadid
);
5322 printf_filtered ("Name: %s\n ", info
->shortname
);
5323 printf_filtered ("State: %s\n", info
->display
);
5324 printf_filtered ("other: %s\n\n", info
->more_display
);
5328 get_and_display_threadinfo (threadref
*ref
)
5332 struct gdb_ext_thread_info threadinfo
;
5334 set
= TAG_THREADID
| TAG_EXISTS
| TAG_THREADNAME
5335 | TAG_MOREDISPLAY
| TAG_DISPLAY
;
5336 if (0 != (result
= remote_get_threadinfo (ref
, set
, &threadinfo
)))
5337 display_thread_info (&threadinfo
);
5342 threadinfo_test_cmd (char *cmd
, int tty
)
5344 int athread
= SAMPLE_THREAD
;
5348 int_to_threadref (&thread
, athread
);
5349 printf_filtered ("Remote Threadinfo test\n");
5350 if (!get_and_display_threadinfo (&thread
))
5351 printf_filtered ("FAIL cannot get thread info\n");
5355 thread_display_step (threadref
*ref
, void *context
)
5357 /* output_threadid(" threadstep ",ref); *//* simple test */
5358 return get_and_display_threadinfo (ref
);
5362 threadlist_update_test_cmd (char *cmd
, int tty
)
5364 printf_filtered ("Remote Threadlist update test\n");
5365 remote_threadlist_iterator (thread_display_step
, 0, CRAZY_MAX_THREADS
);
5369 init_remote_threadtests (void)
5371 add_com ("tlist", class_obscure
, threadlist_test_cmd
,
5372 "Fetch and print the remote list of thread identifiers, one pkt only");
5373 add_com ("tinfo", class_obscure
, threadinfo_test_cmd
,
5374 "Fetch and display info about one thread");
5375 add_com ("tset", class_obscure
, threadset_test_cmd
,
5376 "Test setting to a different thread");
5377 add_com ("tupd", class_obscure
, threadlist_update_test_cmd
,
5378 "Iterate through updating all remote thread info");
5379 add_com ("talive", class_obscure
, threadalive_test
,
5380 " Remote thread alive test ");
5385 /* Convert a thread ID to a string. Returns the string in a static
5389 remote_pid_to_str (ptid_t ptid
)
5391 static char buf
[30];
5393 sprintf (buf
, "Thread %d", PIDGET (ptid
));
5398 init_remote_ops (void)
5400 remote_ops
.to_shortname
= "remote";
5401 remote_ops
.to_longname
= "Remote serial target in gdb-specific protocol";
5403 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
5404 Specify the serial device it is connected to\n\
5405 (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).";
5406 remote_ops
.to_open
= remote_open
;
5407 remote_ops
.to_close
= remote_close
;
5408 remote_ops
.to_detach
= remote_detach
;
5409 remote_ops
.to_resume
= remote_resume
;
5410 remote_ops
.to_wait
= remote_wait
;
5411 remote_ops
.to_fetch_registers
= remote_fetch_registers
;
5412 remote_ops
.to_store_registers
= remote_store_registers
;
5413 remote_ops
.to_prepare_to_store
= remote_prepare_to_store
;
5414 remote_ops
.to_xfer_memory
= remote_xfer_memory
;
5415 remote_ops
.to_files_info
= remote_files_info
;
5416 remote_ops
.to_insert_breakpoint
= remote_insert_breakpoint
;
5417 remote_ops
.to_remove_breakpoint
= remote_remove_breakpoint
;
5418 remote_ops
.to_kill
= remote_kill
;
5419 remote_ops
.to_load
= generic_load
;
5420 remote_ops
.to_mourn_inferior
= remote_mourn
;
5421 remote_ops
.to_thread_alive
= remote_thread_alive
;
5422 remote_ops
.to_find_new_threads
= remote_threads_info
;
5423 remote_ops
.to_pid_to_str
= remote_pid_to_str
;
5424 remote_ops
.to_extra_thread_info
= remote_threads_extra_info
;
5425 remote_ops
.to_stop
= remote_stop
;
5426 remote_ops
.to_query
= remote_query
;
5427 remote_ops
.to_rcmd
= remote_rcmd
;
5428 remote_ops
.to_stratum
= process_stratum
;
5429 remote_ops
.to_has_all_memory
= 1;
5430 remote_ops
.to_has_memory
= 1;
5431 remote_ops
.to_has_stack
= 1;
5432 remote_ops
.to_has_registers
= 1;
5433 remote_ops
.to_has_execution
= 1;
5434 remote_ops
.to_has_thread_control
= tc_schedlock
; /* can lock scheduler */
5435 remote_ops
.to_magic
= OPS_MAGIC
;
5438 /* Set up the extended remote vector by making a copy of the standard
5439 remote vector and adding to it. */
5442 init_extended_remote_ops (void)
5444 extended_remote_ops
= remote_ops
;
5446 extended_remote_ops
.to_shortname
= "extended-remote";
5447 extended_remote_ops
.to_longname
=
5448 "Extended remote serial target in gdb-specific protocol";
5449 extended_remote_ops
.to_doc
=
5450 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
5451 Specify the serial device it is connected to (e.g. /dev/ttya).",
5452 extended_remote_ops
.to_open
= extended_remote_open
;
5453 extended_remote_ops
.to_create_inferior
= extended_remote_create_inferior
;
5454 extended_remote_ops
.to_mourn_inferior
= extended_remote_mourn
;
5458 * Command: info remote-process
5460 * This implements Cisco's version of the "info proc" command.
5462 * This query allows the target stub to return an arbitrary string
5463 * (or strings) giving arbitrary information about the target process.
5464 * This is optional; the target stub isn't required to implement it.
5466 * Syntax: qfProcessInfo request first string
5467 * qsProcessInfo request subsequent string
5468 * reply: 'O'<hex-encoded-string>
5469 * 'l' last reply (empty)
5473 remote_info_process (char *args
, int from_tty
)
5475 struct remote_state
*rs
= get_remote_state ();
5476 char *buf
= alloca (rs
->remote_packet_size
);
5478 if (remote_desc
== 0)
5479 error ("Command can only be used when connected to the remote target.");
5481 putpkt ("qfProcessInfo");
5482 getpkt (buf
, (rs
->remote_packet_size
), 0);
5484 return; /* Silently: target does not support this feature. */
5487 error ("info proc: target error.");
5489 while (buf
[0] == 'O') /* Capitol-O packet */
5491 remote_console_output (&buf
[1]);
5492 putpkt ("qsProcessInfo");
5493 getpkt (buf
, (rs
->remote_packet_size
), 0);
5502 remote_cisco_open (char *name
, int from_tty
)
5506 error ("To open a remote debug connection, you need to specify what \n"
5507 "device is attached to the remote system (e.g. host:port).");
5509 /* See FIXME above */
5510 wait_forever_enabled_p
= 1;
5512 target_preopen (from_tty
);
5514 unpush_target (&remote_cisco_ops
);
5516 remote_desc
= remote_serial_open (name
);
5518 perror_with_name (name
);
5521 * If a baud rate was specified on the gdb command line it will
5522 * be greater than the initial value of -1. If it is, use it otherwise
5526 baud_rate
= (baud_rate
> 0) ? baud_rate
: 9600;
5527 if (serial_setbaudrate (remote_desc
, baud_rate
))
5529 serial_close (remote_desc
);
5530 perror_with_name (name
);
5533 serial_raw (remote_desc
);
5535 /* If there is something sitting in the buffer we might take it as a
5536 response to a command, which would be bad. */
5537 serial_flush_input (remote_desc
);
5541 puts_filtered ("Remote debugging using ");
5542 puts_filtered (name
);
5543 puts_filtered ("\n");
5546 remote_cisco_mode
= 1;
5548 push_target (&remote_cisco_ops
); /* Switch to using cisco target now */
5550 init_all_packet_configs ();
5552 general_thread
= -2;
5553 continue_thread
= -2;
5555 /* Probe for ability to use "ThreadInfo" query, as required. */
5556 use_threadinfo_query
= 1;
5557 use_threadextra_query
= 1;
5559 /* Without this, some commands which require an active target (such
5560 as kill) won't work. This variable serves (at least) double duty
5561 as both the pid of the target process (if it has such), and as a
5562 flag indicating that a target is active. These functions should
5563 be split out into seperate variables, especially since GDB will
5564 someday have a notion of debugging several processes. */
5565 inferior_ptid
= pid_to_ptid (MAGIC_NULL_PID
);
5567 /* Start the remote connection; if error, discard this target. See
5568 the comments in remote_open_1() for further details such as the
5569 need to re-throw the exception. */
5570 ex
= catch_exceptions (uiout
,
5571 remote_start_remote_dummy
, NULL
,
5572 "Couldn't establish connection to remote"
5578 throw_exception (ex
);
5583 remote_cisco_close (int quitting
)
5585 remote_cisco_mode
= 0;
5586 remote_close (quitting
);
5590 remote_cisco_mourn (void)
5592 remote_mourn_1 (&remote_cisco_ops
);
5604 /* Shared between readsocket() and readtty(). The size is arbitrary,
5605 however all targets are known to support a 400 character packet. */
5606 static char tty_input
[400];
5608 static int escape_count
;
5609 static int echo_check
;
5610 extern int quit_flag
;
5617 /* Loop until the socket doesn't have any more data */
5619 while ((data
= readchar (0)) >= 0)
5621 /* Check for the escape sequence */
5624 /* If this is the fourth escape, get out */
5625 if (++escape_count
== 4)
5630 { /* This is a '|', but not the fourth in a row.
5631 Continue without echoing it. If it isn't actually
5632 one of four in a row, it'll be echoed later. */
5639 /* Ensure any pending '|'s are flushed. */
5641 for (; escape_count
> 0; escape_count
--)
5645 if (data
== '\r') /* If this is a return character, */
5646 continue; /* - just supress it. */
5648 if (echo_check
!= -1) /* Check for echo of user input. */
5650 if (tty_input
[echo_check
] == data
)
5652 gdb_assert (echo_check
<= sizeof (tty_input
));
5653 echo_check
++; /* Character matched user input: */
5654 continue; /* Continue without echoing it. */
5656 else if ((data
== '\n') && (tty_input
[echo_check
] == '\r'))
5657 { /* End of the line (and of echo checking). */
5658 echo_check
= -1; /* No more echo supression */
5659 continue; /* Continue without echoing. */
5662 { /* Failed check for echo of user input.
5663 We now have some suppressed output to flush! */
5666 for (j
= 0; j
< echo_check
; j
++)
5667 putchar (tty_input
[j
]);
5671 putchar (data
); /* Default case: output the char. */
5674 if (data
== SERIAL_TIMEOUT
) /* Timeout returned from readchar. */
5675 return READ_MORE
; /* Try to read some more */
5677 return FATAL_ERROR
; /* Trouble, bail out */
5685 /* First, read a buffer full from the terminal */
5686 tty_bytecount
= read (fileno (stdin
), tty_input
, sizeof (tty_input
) - 1);
5687 if (tty_bytecount
== -1)
5689 perror ("readtty: read failed");
5693 /* Remove a quoted newline. */
5694 if (tty_input
[tty_bytecount
- 1] == '\n' &&
5695 tty_input
[tty_bytecount
- 2] == '\\') /* line ending in backslash */
5697 tty_input
[--tty_bytecount
] = 0; /* remove newline */
5698 tty_input
[--tty_bytecount
] = 0; /* remove backslash */
5701 /* Turn trailing newlines into returns */
5702 if (tty_input
[tty_bytecount
- 1] == '\n')
5703 tty_input
[tty_bytecount
- 1] = '\r';
5705 /* If the line consists of a ~, enter debugging mode. */
5706 if ((tty_input
[0] == '~') && (tty_bytecount
== 2))
5709 /* Make this a zero terminated string and write it out */
5710 tty_input
[tty_bytecount
] = 0;
5711 if (serial_write (remote_desc
, tty_input
, tty_bytecount
))
5713 perror_with_name ("readtty: write failed");
5723 fd_set input
; /* file descriptors for select */
5724 int tablesize
; /* max number of FDs for select */
5728 extern int escape_count
; /* global shared by readsocket */
5729 extern int echo_check
; /* ditto */
5734 tablesize
= 8 * sizeof (input
);
5738 /* Check for anything from our socket - doesn't block. Note that
5739 this must be done *before* the select as there may be
5740 buffered I/O waiting to be processed. */
5742 if ((status
= readsocket ()) == FATAL_ERROR
)
5744 error ("Debugging terminated by communications error");
5746 else if (status
!= READ_MORE
)
5751 fflush (stdout
); /* Flush output before blocking */
5753 /* Now block on more socket input or TTY input */
5756 FD_SET (fileno (stdin
), &input
);
5757 FD_SET (deprecated_serial_fd (remote_desc
), &input
);
5759 status
= select (tablesize
, &input
, 0, 0, 0);
5760 if ((status
== -1) && (errno
!= EINTR
))
5762 error ("Communications error on select %d", errno
);
5765 /* Handle Control-C typed */
5769 if ((++quit_count
) == 2)
5771 if (query ("Interrupt GDB? "))
5773 printf_filtered ("Interrupted by user.\n");
5774 throw_exception (RETURN_QUIT
);
5781 serial_send_break (remote_desc
);
5783 serial_write (remote_desc
, "\003", 1);
5788 /* Handle console input */
5790 if (FD_ISSET (fileno (stdin
), &input
))
5794 status
= readtty ();
5795 if (status
== READ_MORE
)
5798 return status
; /* telnet session ended */
5804 remote_cisco_wait (ptid_t ptid
, struct target_waitstatus
*status
)
5806 if (minitelnet () != ENTER_DEBUG
)
5808 error ("Debugging session terminated by protocol error");
5811 return remote_wait (ptid
, status
);
5815 init_remote_cisco_ops (void)
5817 remote_cisco_ops
.to_shortname
= "cisco";
5818 remote_cisco_ops
.to_longname
= "Remote serial target in cisco-specific protocol";
5819 remote_cisco_ops
.to_doc
=
5820 "Use a remote machine via TCP, using a cisco-specific protocol.\n\
5821 Specify the serial device it is connected to (e.g. host:2020).";
5822 remote_cisco_ops
.to_open
= remote_cisco_open
;
5823 remote_cisco_ops
.to_close
= remote_cisco_close
;
5824 remote_cisco_ops
.to_detach
= remote_detach
;
5825 remote_cisco_ops
.to_resume
= remote_resume
;
5826 remote_cisco_ops
.to_wait
= remote_cisco_wait
;
5827 remote_cisco_ops
.to_fetch_registers
= remote_fetch_registers
;
5828 remote_cisco_ops
.to_store_registers
= remote_store_registers
;
5829 remote_cisco_ops
.to_prepare_to_store
= remote_prepare_to_store
;
5830 remote_cisco_ops
.to_xfer_memory
= remote_xfer_memory
;
5831 remote_cisco_ops
.to_files_info
= remote_files_info
;
5832 remote_cisco_ops
.to_insert_breakpoint
= remote_insert_breakpoint
;
5833 remote_cisco_ops
.to_remove_breakpoint
= remote_remove_breakpoint
;
5834 remote_cisco_ops
.to_kill
= remote_kill
;
5835 remote_cisco_ops
.to_load
= generic_load
;
5836 remote_cisco_ops
.to_mourn_inferior
= remote_cisco_mourn
;
5837 remote_cisco_ops
.to_thread_alive
= remote_thread_alive
;
5838 remote_cisco_ops
.to_find_new_threads
= remote_threads_info
;
5839 remote_cisco_ops
.to_pid_to_str
= remote_pid_to_str
;
5840 remote_cisco_ops
.to_extra_thread_info
= remote_threads_extra_info
;
5841 remote_cisco_ops
.to_stratum
= process_stratum
;
5842 remote_cisco_ops
.to_has_all_memory
= 1;
5843 remote_cisco_ops
.to_has_memory
= 1;
5844 remote_cisco_ops
.to_has_stack
= 1;
5845 remote_cisco_ops
.to_has_registers
= 1;
5846 remote_cisco_ops
.to_has_execution
= 1;
5847 remote_cisco_ops
.to_magic
= OPS_MAGIC
;
5851 remote_can_async_p (void)
5853 /* We're async whenever the serial device is. */
5854 return (current_target
.to_async_mask_value
) && serial_can_async_p (remote_desc
);
5858 remote_is_async_p (void)
5860 /* We're async whenever the serial device is. */
5861 return (current_target
.to_async_mask_value
) && serial_is_async_p (remote_desc
);
5864 /* Pass the SERIAL event on and up to the client. One day this code
5865 will be able to delay notifying the client of an event until the
5866 point where an entire packet has been received. */
5868 static void (*async_client_callback
) (enum inferior_event_type event_type
, void *context
);
5869 static void *async_client_context
;
5870 static serial_event_ftype remote_async_serial_handler
;
5873 remote_async_serial_handler (struct serial
*scb
, void *context
)
5875 /* Don't propogate error information up to the client. Instead let
5876 the client find out about the error by querying the target. */
5877 async_client_callback (INF_REG_EVENT
, async_client_context
);
5881 remote_async (void (*callback
) (enum inferior_event_type event_type
, void *context
), void *context
)
5883 if (current_target
.to_async_mask_value
== 0)
5884 internal_error (__FILE__
, __LINE__
,
5885 "Calling remote_async when async is masked");
5887 if (callback
!= NULL
)
5889 serial_async (remote_desc
, remote_async_serial_handler
, NULL
);
5890 async_client_callback
= callback
;
5891 async_client_context
= context
;
5894 serial_async (remote_desc
, NULL
, NULL
);
5897 /* Target async and target extended-async.
5899 This are temporary targets, until it is all tested. Eventually
5900 async support will be incorporated int the usual 'remote'
5904 init_remote_async_ops (void)
5906 remote_async_ops
.to_shortname
= "async";
5907 remote_async_ops
.to_longname
= "Remote serial target in async version of the gdb-specific protocol";
5908 remote_async_ops
.to_doc
=
5909 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
5910 Specify the serial device it is connected to (e.g. /dev/ttya).";
5911 remote_async_ops
.to_open
= remote_async_open
;
5912 remote_async_ops
.to_close
= remote_close
;
5913 remote_async_ops
.to_detach
= remote_async_detach
;
5914 remote_async_ops
.to_resume
= remote_async_resume
;
5915 remote_async_ops
.to_wait
= remote_async_wait
;
5916 remote_async_ops
.to_fetch_registers
= remote_fetch_registers
;
5917 remote_async_ops
.to_store_registers
= remote_store_registers
;
5918 remote_async_ops
.to_prepare_to_store
= remote_prepare_to_store
;
5919 remote_async_ops
.to_xfer_memory
= remote_xfer_memory
;
5920 remote_async_ops
.to_files_info
= remote_files_info
;
5921 remote_async_ops
.to_insert_breakpoint
= remote_insert_breakpoint
;
5922 remote_async_ops
.to_remove_breakpoint
= remote_remove_breakpoint
;
5923 remote_async_ops
.to_terminal_inferior
= remote_async_terminal_inferior
;
5924 remote_async_ops
.to_terminal_ours
= remote_async_terminal_ours
;
5925 remote_async_ops
.to_kill
= remote_async_kill
;
5926 remote_async_ops
.to_load
= generic_load
;
5927 remote_async_ops
.to_mourn_inferior
= remote_async_mourn
;
5928 remote_async_ops
.to_thread_alive
= remote_thread_alive
;
5929 remote_async_ops
.to_find_new_threads
= remote_threads_info
;
5930 remote_async_ops
.to_pid_to_str
= remote_pid_to_str
;
5931 remote_async_ops
.to_extra_thread_info
= remote_threads_extra_info
;
5932 remote_async_ops
.to_stop
= remote_stop
;
5933 remote_async_ops
.to_query
= remote_query
;
5934 remote_async_ops
.to_rcmd
= remote_rcmd
;
5935 remote_async_ops
.to_stratum
= process_stratum
;
5936 remote_async_ops
.to_has_all_memory
= 1;
5937 remote_async_ops
.to_has_memory
= 1;
5938 remote_async_ops
.to_has_stack
= 1;
5939 remote_async_ops
.to_has_registers
= 1;
5940 remote_async_ops
.to_has_execution
= 1;
5941 remote_async_ops
.to_has_thread_control
= tc_schedlock
; /* can lock scheduler */
5942 remote_async_ops
.to_can_async_p
= remote_can_async_p
;
5943 remote_async_ops
.to_is_async_p
= remote_is_async_p
;
5944 remote_async_ops
.to_async
= remote_async
;
5945 remote_async_ops
.to_async_mask_value
= 1;
5946 remote_async_ops
.to_magic
= OPS_MAGIC
;
5949 /* Set up the async extended remote vector by making a copy of the standard
5950 remote vector and adding to it. */
5953 init_extended_async_remote_ops (void)
5955 extended_async_remote_ops
= remote_async_ops
;
5957 extended_async_remote_ops
.to_shortname
= "extended-async";
5958 extended_async_remote_ops
.to_longname
=
5959 "Extended remote serial target in async gdb-specific protocol";
5960 extended_async_remote_ops
.to_doc
=
5961 "Use a remote computer via a serial line, using an async gdb-specific protocol.\n\
5962 Specify the serial device it is connected to (e.g. /dev/ttya).",
5963 extended_async_remote_ops
.to_open
= extended_remote_async_open
;
5964 extended_async_remote_ops
.to_create_inferior
= extended_remote_async_create_inferior
;
5965 extended_async_remote_ops
.to_mourn_inferior
= extended_remote_mourn
;
5969 set_remote_cmd (char *args
, int from_tty
)
5974 show_remote_cmd (char *args
, int from_tty
)
5976 /* FIXME: cagney/2002-06-15: This function should iterate over
5977 remote_show_cmdlist for a list of sub commands to show. */
5978 show_remote_protocol_Z_packet_cmd (args
, from_tty
, NULL
);
5979 show_remote_protocol_e_packet_cmd (args
, from_tty
, NULL
);
5980 show_remote_protocol_E_packet_cmd (args
, from_tty
, NULL
);
5981 show_remote_protocol_P_packet_cmd (args
, from_tty
, NULL
);
5982 show_remote_protocol_qSymbol_packet_cmd (args
, from_tty
, NULL
);
5983 show_remote_protocol_binary_download_cmd (args
, from_tty
, NULL
);
5987 build_remote_gdbarch_data (void)
5989 remote_address_size
= TARGET_ADDR_BIT
;
5992 /* Saved pointer to previous owner of the new_objfile event. */
5993 static void (*remote_new_objfile_chain
) (struct objfile
*);
5995 /* Function to be called whenever a new objfile (shlib) is detected. */
5997 remote_new_objfile (struct objfile
*objfile
)
5999 if (remote_desc
!= 0) /* Have a remote connection */
6001 remote_check_symbols (objfile
);
6003 /* Call predecessor on chain, if any. */
6004 if (remote_new_objfile_chain
!= 0 &&
6006 remote_new_objfile_chain (objfile
);
6010 _initialize_remote (void)
6012 static struct cmd_list_element
*remote_set_cmdlist
;
6013 static struct cmd_list_element
*remote_show_cmdlist
;
6014 struct cmd_list_element
*tmpcmd
;
6016 /* architecture specific data */
6017 remote_gdbarch_data_handle
= register_gdbarch_data (init_remote_state
,
6020 /* Old tacky stuff. NOTE: This comes after the remote protocol so
6021 that the remote protocol has been initialized. */
6022 register_gdbarch_swap (&remote_address_size
,
6023 sizeof (&remote_address_size
), NULL
);
6024 register_gdbarch_swap (NULL
, 0, build_remote_gdbarch_data
);
6027 add_target (&remote_ops
);
6029 init_extended_remote_ops ();
6030 add_target (&extended_remote_ops
);
6032 init_remote_async_ops ();
6033 add_target (&remote_async_ops
);
6035 init_extended_async_remote_ops ();
6036 add_target (&extended_async_remote_ops
);
6038 init_remote_cisco_ops ();
6039 add_target (&remote_cisco_ops
);
6041 /* Hook into new objfile notification. */
6042 remote_new_objfile_chain
= target_new_objfile_hook
;
6043 target_new_objfile_hook
= remote_new_objfile
;
6046 init_remote_threadtests ();
6049 /* set/show remote ... */
6051 add_prefix_cmd ("remote", class_maintenance
, set_remote_cmd
, "\
6052 Remote protocol specific variables\n\
6053 Configure various remote-protocol specific variables such as\n\
6054 the packets being used",
6055 &remote_set_cmdlist
, "set remote ",
6056 0/*allow-unknown*/, &setlist
);
6057 add_prefix_cmd ("remote", class_maintenance
, show_remote_cmd
, "\
6058 Remote protocol specific variables\n\
6059 Configure various remote-protocol specific variables such as\n\
6060 the packets being used",
6061 &remote_show_cmdlist
, "show remote ",
6062 0/*allow-unknown*/, &showlist
);
6064 add_cmd ("compare-sections", class_obscure
, compare_sections_command
,
6065 "Compare section data on target to the exec file.\n\
6066 Argument is a single section name (default: all loaded sections).",
6069 add_cmd ("packet", class_maintenance
, packet_command
,
6070 "Send an arbitrary packet to a remote target.\n\
6071 maintenance packet TEXT\n\
6072 If GDB is talking to an inferior via the GDB serial protocol, then\n\
6073 this command sends the string TEXT to the inferior, and displays the\n\
6074 response packet. GDB supplies the initial `$' character, and the\n\
6075 terminating `#' character and checksum.",
6078 add_setshow_boolean_cmd ("remotebreak", no_class
, &remote_break
,
6079 "Set whether to send break if interrupted.\n",
6080 "Show whether to send break if interrupted.\n",
6082 &setlist
, &showlist
);
6084 /* Install commands for configuring memory read/write packets. */
6086 add_cmd ("remotewritesize", no_class
, set_memory_write_packet_size
,
6087 "Set the maximum number of bytes per memory write packet (deprecated).\n",
6089 add_cmd ("remotewritesize", no_class
, show_memory_write_packet_size
,
6090 "Show the maximum number of bytes per memory write packet (deprecated).\n",
6092 add_cmd ("memory-write-packet-size", no_class
,
6093 set_memory_write_packet_size
,
6094 "Set the maximum number of bytes per memory-write packet.\n"
6095 "Specify the number of bytes in a packet or 0 (zero) for the\n"
6096 "default packet size. The actual limit is further reduced\n"
6097 "dependent on the target. Specify ``fixed'' to disable the\n"
6098 "further restriction and ``limit'' to enable that restriction\n",
6099 &remote_set_cmdlist
);
6100 add_cmd ("memory-read-packet-size", no_class
,
6101 set_memory_read_packet_size
,
6102 "Set the maximum number of bytes per memory-read packet.\n"
6103 "Specify the number of bytes in a packet or 0 (zero) for the\n"
6104 "default packet size. The actual limit is further reduced\n"
6105 "dependent on the target. Specify ``fixed'' to disable the\n"
6106 "further restriction and ``limit'' to enable that restriction\n",
6107 &remote_set_cmdlist
);
6108 add_cmd ("memory-write-packet-size", no_class
,
6109 show_memory_write_packet_size
,
6110 "Show the maximum number of bytes per memory-write packet.\n",
6111 &remote_show_cmdlist
);
6112 add_cmd ("memory-read-packet-size", no_class
,
6113 show_memory_read_packet_size
,
6114 "Show the maximum number of bytes per memory-read packet.\n",
6115 &remote_show_cmdlist
);
6118 (add_set_cmd ("remoteaddresssize", class_obscure
,
6119 var_integer
, (char *) &remote_address_size
,
6120 "Set the maximum size of the address (in bits) \
6121 in a memory packet.\n",
6125 add_packet_config_cmd (&remote_protocol_binary_download
,
6126 "X", "binary-download",
6127 set_remote_protocol_binary_download_cmd
,
6128 show_remote_protocol_binary_download_cmd
,
6129 &remote_set_cmdlist
, &remote_show_cmdlist
,
6132 /* XXXX - should ``set remotebinarydownload'' be retained for
6135 (add_set_cmd ("remotebinarydownload", no_class
,
6136 var_boolean
, (char *) &remote_binary_download
,
6137 "Set binary downloads.\n", &setlist
),
6141 add_info ("remote-process", remote_info_process
,
6142 "Query the remote system for process info.");
6144 add_packet_config_cmd (&remote_protocol_qSymbol
,
6145 "qSymbol", "symbol-lookup",
6146 set_remote_protocol_qSymbol_packet_cmd
,
6147 show_remote_protocol_qSymbol_packet_cmd
,
6148 &remote_set_cmdlist
, &remote_show_cmdlist
,
6151 add_packet_config_cmd (&remote_protocol_e
,
6152 "e", "step-over-range",
6153 set_remote_protocol_e_packet_cmd
,
6154 show_remote_protocol_e_packet_cmd
,
6155 &remote_set_cmdlist
, &remote_show_cmdlist
,
6157 /* Disable by default. The ``e'' packet has nasty interactions with
6158 the threading code - it relies on global state. */
6159 remote_protocol_e
.detect
= AUTO_BOOLEAN_FALSE
;
6160 update_packet_config (&remote_protocol_e
);
6162 add_packet_config_cmd (&remote_protocol_E
,
6163 "E", "step-over-range-w-signal",
6164 set_remote_protocol_E_packet_cmd
,
6165 show_remote_protocol_E_packet_cmd
,
6166 &remote_set_cmdlist
, &remote_show_cmdlist
,
6168 /* Disable by default. The ``e'' packet has nasty interactions with
6169 the threading code - it relies on global state. */
6170 remote_protocol_E
.detect
= AUTO_BOOLEAN_FALSE
;
6171 update_packet_config (&remote_protocol_E
);
6173 add_packet_config_cmd (&remote_protocol_P
,
6174 "P", "set-register",
6175 set_remote_protocol_P_packet_cmd
,
6176 show_remote_protocol_P_packet_cmd
,
6177 &remote_set_cmdlist
, &remote_show_cmdlist
,
6180 add_packet_config_cmd (&remote_protocol_Z
[Z_PACKET_SOFTWARE_BP
],
6181 "Z0", "software-breakpoint",
6182 set_remote_protocol_Z_software_bp_packet_cmd
,
6183 show_remote_protocol_Z_software_bp_packet_cmd
,
6184 &remote_set_cmdlist
, &remote_show_cmdlist
,
6187 add_packet_config_cmd (&remote_protocol_Z
[Z_PACKET_HARDWARE_BP
],
6188 "Z1", "hardware-breakpoint",
6189 set_remote_protocol_Z_hardware_bp_packet_cmd
,
6190 show_remote_protocol_Z_hardware_bp_packet_cmd
,
6191 &remote_set_cmdlist
, &remote_show_cmdlist
,
6194 add_packet_config_cmd (&remote_protocol_Z
[Z_PACKET_WRITE_WP
],
6195 "Z2", "write-watchpoint",
6196 set_remote_protocol_Z_write_wp_packet_cmd
,
6197 show_remote_protocol_Z_write_wp_packet_cmd
,
6198 &remote_set_cmdlist
, &remote_show_cmdlist
,
6201 add_packet_config_cmd (&remote_protocol_Z
[Z_PACKET_READ_WP
],
6202 "Z3", "read-watchpoint",
6203 set_remote_protocol_Z_read_wp_packet_cmd
,
6204 show_remote_protocol_Z_read_wp_packet_cmd
,
6205 &remote_set_cmdlist
, &remote_show_cmdlist
,
6208 add_packet_config_cmd (&remote_protocol_Z
[Z_PACKET_ACCESS_WP
],
6209 "Z4", "access-watchpoint",
6210 set_remote_protocol_Z_access_wp_packet_cmd
,
6211 show_remote_protocol_Z_access_wp_packet_cmd
,
6212 &remote_set_cmdlist
, &remote_show_cmdlist
,
6215 /* Keep the old ``set remote Z-packet ...'' working. */
6216 add_setshow_auto_boolean_cmd ("Z-packet", class_obscure
,
6217 &remote_Z_packet_detect
, "\
6218 Set use of remote protocol `Z' packets",
6219 "Show use of remote protocol `Z' packets ",
6220 set_remote_protocol_Z_packet_cmd
,
6221 show_remote_protocol_Z_packet_cmd
,
6222 &remote_set_cmdlist
, &remote_show_cmdlist
);