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
*
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 cmd_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 CMD_AUTO_BOOLEAN_TRUE
:
606 config
->support
= PACKET_ENABLE
;
608 case CMD_AUTO_BOOLEAN_FALSE
:
609 config
->support
= PACKET_DISABLE
;
611 case CMD_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 CMD_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 CMD_AUTO_BOOLEAN_TRUE
:
640 case CMD_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 void (*set_func
) (char *args
, int from_tty
,
652 struct cmd_list_element
*
654 void (*show_func
) (char *name
,
656 struct cmd_list_element
**set_remote_list
,
657 struct cmd_list_element
**show_remote_list
,
660 struct cmd_list_element
*set_cmd
;
661 struct cmd_list_element
*show_cmd
;
666 config
->title
= title
;
667 config
->detect
= CMD_AUTO_BOOLEAN_AUTO
;
668 config
->support
= PACKET_SUPPORT_UNKNOWN
;
669 xasprintf (&set_doc
, "Set use of remote protocol `%s' (%s) packet",
671 xasprintf (&show_doc
, "Show current use of remote protocol `%s' (%s) packet",
673 /* set/show TITLE-packet {auto,on,off} */
674 xasprintf (&cmd_name
, "%s-packet", title
);
675 set_cmd
= add_set_auto_boolean_cmd (cmd_name
, class_obscure
,
676 &config
->detect
, set_doc
,
678 set_cmd_sfunc (set_cmd
, set_func
);
679 show_cmd
= add_cmd (cmd_name
, class_obscure
, show_func
, show_doc
,
681 /* set/show remote NAME-packet {auto,on,off} -- legacy */
685 xasprintf (&legacy_name
, "%s-packet", name
);
686 add_alias_cmd (legacy_name
, cmd_name
, class_obscure
, 0,
688 add_alias_cmd (legacy_name
, cmd_name
, class_obscure
, 0,
693 static enum packet_result
694 packet_ok (const char *buf
, struct packet_config
*config
)
698 /* The stub recognized the packet request. Check that the
699 operation succeeded. */
700 switch (config
->support
)
702 case PACKET_SUPPORT_UNKNOWN
:
704 fprintf_unfiltered (gdb_stdlog
,
705 "Packet %s (%s) is supported\n",
706 config
->name
, config
->title
);
707 config
->support
= PACKET_ENABLE
;
710 internal_error (__FILE__
, __LINE__
,
711 "packet_ok: attempt to use a disabled packet");
716 if (buf
[0] == 'O' && buf
[1] == 'K' && buf
[2] == '\0')
717 /* "OK" - definitly OK. */
720 && isxdigit (buf
[1]) && isxdigit (buf
[2])
722 /* "Enn" - definitly an error. */
724 /* The packet may or may not be OK. Just assume it is */
729 /* The stub does not support the packet. */
730 switch (config
->support
)
733 if (config
->detect
== CMD_AUTO_BOOLEAN_AUTO
)
734 /* If the stub previously indicated that the packet was
735 supported then there is a protocol error.. */
736 error ("Protocol error: %s (%s) conflicting enabled responses.",
737 config
->name
, config
->title
);
739 /* The user set it wrong. */
740 error ("Enabled packet %s (%s) not recognized by stub",
741 config
->name
, config
->title
);
743 case PACKET_SUPPORT_UNKNOWN
:
745 fprintf_unfiltered (gdb_stdlog
,
746 "Packet %s (%s) is NOT supported\n",
747 config
->name
, config
->title
);
748 config
->support
= PACKET_DISABLE
;
753 return PACKET_UNKNOWN
;
757 /* Should we try the 'qSymbol' (target symbol lookup service) request? */
758 static struct packet_config remote_protocol_qSymbol
;
761 set_remote_protocol_qSymbol_packet_cmd (char *args
, int from_tty
,
762 struct cmd_list_element
*c
)
764 update_packet_config (&remote_protocol_qSymbol
);
768 show_remote_protocol_qSymbol_packet_cmd (char *args
, int from_tty
)
770 show_packet_config_cmd (&remote_protocol_qSymbol
);
773 /* Should we try the 'e' (step over range) request? */
774 static struct packet_config remote_protocol_e
;
777 set_remote_protocol_e_packet_cmd (char *args
, int from_tty
,
778 struct cmd_list_element
*c
)
780 update_packet_config (&remote_protocol_e
);
784 show_remote_protocol_e_packet_cmd (char *args
, int from_tty
)
786 show_packet_config_cmd (&remote_protocol_e
);
790 /* Should we try the 'E' (step over range / w signal #) request? */
791 static struct packet_config remote_protocol_E
;
794 set_remote_protocol_E_packet_cmd (char *args
, int from_tty
,
795 struct cmd_list_element
*c
)
797 update_packet_config (&remote_protocol_E
);
801 show_remote_protocol_E_packet_cmd (char *args
, int from_tty
)
803 show_packet_config_cmd (&remote_protocol_E
);
807 /* Should we try the 'P' (set register) request? */
809 static struct packet_config remote_protocol_P
;
812 set_remote_protocol_P_packet_cmd (char *args
, int from_tty
,
813 struct cmd_list_element
*c
)
815 update_packet_config (&remote_protocol_P
);
819 show_remote_protocol_P_packet_cmd (char *args
, int from_tty
)
821 show_packet_config_cmd (&remote_protocol_P
);
824 /* Should we try one of the 'Z' requests? */
828 Z_PACKET_SOFTWARE_BP
,
829 Z_PACKET_HARDWARE_BP
,
836 static struct packet_config remote_protocol_Z
[NR_Z_PACKET_TYPES
];
838 /* FIXME: Instead of having all these boiler plate functions, the
839 command callback should include a context argument. */
842 set_remote_protocol_Z_software_bp_packet_cmd (char *args
, int from_tty
,
843 struct cmd_list_element
*c
)
845 update_packet_config (&remote_protocol_Z
[Z_PACKET_SOFTWARE_BP
]);
849 show_remote_protocol_Z_software_bp_packet_cmd (char *args
, int from_tty
)
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
)
864 show_packet_config_cmd (&remote_protocol_Z
[Z_PACKET_HARDWARE_BP
]);
868 set_remote_protocol_Z_write_wp_packet_cmd (char *args
, int from_tty
,
869 struct cmd_list_element
*c
)
871 update_packet_config (&remote_protocol_Z
[Z_PACKET_WRITE_WP
]);
875 show_remote_protocol_Z_write_wp_packet_cmd (char *args
, int from_tty
)
877 show_packet_config_cmd (&remote_protocol_Z
[Z_PACKET_WRITE_WP
]);
881 set_remote_protocol_Z_read_wp_packet_cmd (char *args
, int from_tty
,
882 struct cmd_list_element
*c
)
884 update_packet_config (&remote_protocol_Z
[Z_PACKET_READ_WP
]);
888 show_remote_protocol_Z_read_wp_packet_cmd (char *args
, int from_tty
)
890 show_packet_config_cmd (&remote_protocol_Z
[Z_PACKET_READ_WP
]);
894 set_remote_protocol_Z_access_wp_packet_cmd (char *args
, int from_tty
,
895 struct cmd_list_element
*c
)
897 update_packet_config (&remote_protocol_Z
[Z_PACKET_ACCESS_WP
]);
901 show_remote_protocol_Z_access_wp_packet_cmd (char *args
, int from_tty
)
903 show_packet_config_cmd (&remote_protocol_Z
[Z_PACKET_ACCESS_WP
]);
906 /* For compatibility with older distributions. Provide a ``set remote
907 Z-packet ...'' command that updates all the Z packet types. */
909 static enum cmd_auto_boolean remote_Z_packet_detect
;
912 set_remote_protocol_Z_packet_cmd (char *args
, int from_tty
,
913 struct cmd_list_element
*c
)
916 for (i
= 0; i
< NR_Z_PACKET_TYPES
; i
++)
918 remote_protocol_Z
[i
].detect
= remote_Z_packet_detect
;
919 update_packet_config (&remote_protocol_Z
[i
]);
924 show_remote_protocol_Z_packet_cmd (char *args
, int from_tty
)
927 for (i
= 0; i
< NR_Z_PACKET_TYPES
; i
++)
929 show_packet_config_cmd (&remote_protocol_Z
[i
]);
933 /* Should we try the 'X' (remote binary download) packet?
935 This variable (available to the user via "set remote X-packet")
936 dictates whether downloads are sent in binary (via the 'X' packet).
937 We assume that the stub can, and attempt to do it. This will be
938 cleared if the stub does not understand it. This switch is still
939 needed, though in cases when the packet is supported in the stub,
940 but the connection does not allow it (i.e., 7-bit serial connection
943 static struct packet_config remote_protocol_binary_download
;
945 /* Should we try the 'ThreadInfo' query packet?
947 This variable (NOT available to the user: auto-detect only!)
948 determines whether GDB will use the new, simpler "ThreadInfo"
949 query or the older, more complex syntax for thread queries.
950 This is an auto-detect variable (set to true at each connect,
951 and set to false when the target fails to recognize it). */
953 static int use_threadinfo_query
;
954 static int use_threadextra_query
;
957 set_remote_protocol_binary_download_cmd (char *args
,
959 struct cmd_list_element
*c
)
961 update_packet_config (&remote_protocol_binary_download
);
965 show_remote_protocol_binary_download_cmd (char *args
,
968 show_packet_config_cmd (&remote_protocol_binary_download
);
972 /* Tokens for use by the asynchronous signal handlers for SIGINT */
973 static void *sigint_remote_twice_token
;
974 static void *sigint_remote_token
;
976 /* These are pointers to hook functions that may be set in order to
977 modify resume/wait behavior for a particular architecture. */
979 void (*target_resume_hook
) (void);
980 void (*target_wait_loop_hook
) (void);
984 /* These are the threads which we last sent to the remote system.
985 -1 for all or -2 for not sent yet. */
986 static int general_thread
;
987 static int continue_thread
;
989 /* Call this function as a result of
990 1) A halt indication (T packet) containing a thread id
991 2) A direct query of currthread
992 3) Successful execution of set thread
996 record_currthread (int currthread
)
998 general_thread
= currthread
;
1000 /* If this is a new thread, add it to GDB's thread list.
1001 If we leave it up to WFI to do this, bad things will happen. */
1002 if (!in_thread_list (pid_to_ptid (currthread
)))
1004 add_thread (pid_to_ptid (currthread
));
1005 ui_out_text (uiout
, "[New ");
1006 ui_out_text (uiout
, target_pid_to_str (pid_to_ptid (currthread
)));
1007 ui_out_text (uiout
, "]\n");
1011 #define MAGIC_NULL_PID 42000
1014 set_thread (int th
, int gen
)
1016 struct remote_state
*rs
= get_remote_state ();
1017 char *buf
= alloca (rs
->remote_packet_size
);
1018 int state
= gen
? general_thread
: continue_thread
;
1024 buf
[1] = gen
? 'g' : 'c';
1025 if (th
== MAGIC_NULL_PID
)
1031 sprintf (&buf
[2], "-%x", -th
);
1033 sprintf (&buf
[2], "%x", th
);
1035 getpkt (buf
, (rs
->remote_packet_size
), 0);
1037 general_thread
= th
;
1039 continue_thread
= th
;
1042 /* Return nonzero if the thread TH is still alive on the remote system. */
1045 remote_thread_alive (ptid_t ptid
)
1047 int tid
= PIDGET (ptid
);
1051 sprintf (buf
, "T-%08x", -tid
);
1053 sprintf (buf
, "T%08x", tid
);
1055 getpkt (buf
, sizeof (buf
), 0);
1056 return (buf
[0] == 'O' && buf
[1] == 'K');
1059 /* About these extended threadlist and threadinfo packets. They are
1060 variable length packets but, the fields within them are often fixed
1061 length. They are redundent enough to send over UDP as is the
1062 remote protocol in general. There is a matching unit test module
1065 #define OPAQUETHREADBYTES 8
1067 /* a 64 bit opaque identifier */
1068 typedef unsigned char threadref
[OPAQUETHREADBYTES
];
1070 /* WARNING: This threadref data structure comes from the remote O.S., libstub
1071 protocol encoding, and remote.c. it is not particularly changable */
1073 /* Right now, the internal structure is int. We want it to be bigger.
1077 typedef int gdb_threadref
; /* internal GDB thread reference */
1079 /* gdb_ext_thread_info is an internal GDB data structure which is
1080 equivalint to the reply of the remote threadinfo packet */
1082 struct gdb_ext_thread_info
1084 threadref threadid
; /* External form of thread reference */
1085 int active
; /* Has state interesting to GDB? , regs, stack */
1086 char display
[256]; /* Brief state display, name, blocked/syspended */
1087 char shortname
[32]; /* To be used to name threads */
1088 char more_display
[256]; /* Long info, statistics, queue depth, whatever */
1091 /* The volume of remote transfers can be limited by submitting
1092 a mask containing bits specifying the desired information.
1093 Use a union of these values as the 'selection' parameter to
1094 get_thread_info. FIXME: Make these TAG names more thread specific.
1097 #define TAG_THREADID 1
1098 #define TAG_EXISTS 2
1099 #define TAG_DISPLAY 4
1100 #define TAG_THREADNAME 8
1101 #define TAG_MOREDISPLAY 16
1103 #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES*2)
1105 char *unpack_varlen_hex (char *buff
, int *result
);
1107 static char *unpack_nibble (char *buf
, int *val
);
1109 static char *pack_nibble (char *buf
, int nibble
);
1111 static char *pack_hex_byte (char *pkt
, int /*unsigned char */ byte
);
1113 static char *unpack_byte (char *buf
, int *value
);
1115 static char *pack_int (char *buf
, int value
);
1117 static char *unpack_int (char *buf
, int *value
);
1119 static char *unpack_string (char *src
, char *dest
, int length
);
1121 static char *pack_threadid (char *pkt
, threadref
* id
);
1123 static char *unpack_threadid (char *inbuf
, threadref
* id
);
1125 void int_to_threadref (threadref
* id
, int value
);
1127 static int threadref_to_int (threadref
* ref
);
1129 static void copy_threadref (threadref
* dest
, threadref
* src
);
1131 static int threadmatch (threadref
* dest
, threadref
* src
);
1133 static char *pack_threadinfo_request (char *pkt
, int mode
, threadref
* id
);
1135 static int remote_unpack_thread_info_response (char *pkt
,
1136 threadref
* expectedref
,
1137 struct gdb_ext_thread_info
1141 static int remote_get_threadinfo (threadref
* threadid
, int fieldset
, /*TAG mask */
1142 struct gdb_ext_thread_info
*info
);
1144 static int adapt_remote_get_threadinfo (gdb_threadref
* ref
,
1146 struct gdb_ext_thread_info
*info
);
1148 static char *pack_threadlist_request (char *pkt
, int startflag
,
1150 threadref
* nextthread
);
1152 static int parse_threadlist_response (char *pkt
,
1154 threadref
* original_echo
,
1155 threadref
* resultlist
, int *doneflag
);
1157 static int remote_get_threadlist (int startflag
,
1158 threadref
* nextthread
,
1161 int *result_count
, threadref
* threadlist
);
1163 typedef int (*rmt_thread_action
) (threadref
* ref
, void *context
);
1165 static int remote_threadlist_iterator (rmt_thread_action stepfunction
,
1166 void *context
, int looplimit
);
1168 static int remote_newthread_step (threadref
* ref
, void *context
);
1170 /* encode 64 bits in 16 chars of hex */
1172 static const char hexchars
[] = "0123456789abcdef";
1175 ishex (int ch
, int *val
)
1177 if ((ch
>= 'a') && (ch
<= 'f'))
1179 *val
= ch
- 'a' + 10;
1182 if ((ch
>= 'A') && (ch
<= 'F'))
1184 *val
= ch
- 'A' + 10;
1187 if ((ch
>= '0') && (ch
<= '9'))
1198 if (ch
>= 'a' && ch
<= 'f')
1199 return ch
- 'a' + 10;
1200 if (ch
>= '0' && ch
<= '9')
1202 if (ch
>= 'A' && ch
<= 'F')
1203 return ch
- 'A' + 10;
1208 stub_unpack_int (char *buff
, int fieldlength
)
1215 nibble
= stubhex (*buff
++);
1219 retval
= retval
<< 4;
1225 unpack_varlen_hex (char *buff
, /* packet to parse */
1231 while (ishex (*buff
, &nibble
))
1234 retval
= retval
<< 4;
1235 retval
|= nibble
& 0x0f;
1242 unpack_nibble (char *buf
, int *val
)
1244 ishex (*buf
++, val
);
1249 pack_nibble (char *buf
, int nibble
)
1251 *buf
++ = hexchars
[(nibble
& 0x0f)];
1256 pack_hex_byte (char *pkt
, int byte
)
1258 *pkt
++ = hexchars
[(byte
>> 4) & 0xf];
1259 *pkt
++ = hexchars
[(byte
& 0xf)];
1264 unpack_byte (char *buf
, int *value
)
1266 *value
= stub_unpack_int (buf
, 2);
1271 pack_int (char *buf
, int value
)
1273 buf
= pack_hex_byte (buf
, (value
>> 24) & 0xff);
1274 buf
= pack_hex_byte (buf
, (value
>> 16) & 0xff);
1275 buf
= pack_hex_byte (buf
, (value
>> 8) & 0x0ff);
1276 buf
= pack_hex_byte (buf
, (value
& 0xff));
1281 unpack_int (char *buf
, int *value
)
1283 *value
= stub_unpack_int (buf
, 8);
1287 #if 0 /* currently unused, uncomment when needed */
1288 static char *pack_string (char *pkt
, char *string
);
1291 pack_string (char *pkt
, char *string
)
1296 len
= strlen (string
);
1298 len
= 200; /* Bigger than most GDB packets, junk??? */
1299 pkt
= pack_hex_byte (pkt
, len
);
1303 if ((ch
== '\0') || (ch
== '#'))
1304 ch
= '*'; /* Protect encapsulation */
1309 #endif /* 0 (unused) */
1312 unpack_string (char *src
, char *dest
, int length
)
1321 pack_threadid (char *pkt
, threadref
*id
)
1324 unsigned char *altid
;
1326 altid
= (unsigned char *) id
;
1327 limit
= pkt
+ BUF_THREAD_ID_SIZE
;
1329 pkt
= pack_hex_byte (pkt
, *altid
++);
1335 unpack_threadid (char *inbuf
, threadref
*id
)
1338 char *limit
= inbuf
+ BUF_THREAD_ID_SIZE
;
1341 altref
= (char *) id
;
1343 while (inbuf
< limit
)
1345 x
= stubhex (*inbuf
++);
1346 y
= stubhex (*inbuf
++);
1347 *altref
++ = (x
<< 4) | y
;
1352 /* Externally, threadrefs are 64 bits but internally, they are still
1353 ints. This is due to a mismatch of specifications. We would like
1354 to use 64bit thread references internally. This is an adapter
1358 int_to_threadref (threadref
*id
, int value
)
1360 unsigned char *scan
;
1362 scan
= (unsigned char *) id
;
1368 *scan
++ = (value
>> 24) & 0xff;
1369 *scan
++ = (value
>> 16) & 0xff;
1370 *scan
++ = (value
>> 8) & 0xff;
1371 *scan
++ = (value
& 0xff);
1375 threadref_to_int (threadref
*ref
)
1378 unsigned char *scan
;
1380 scan
= (char *) ref
;
1384 value
= (value
<< 8) | ((*scan
++) & 0xff);
1389 copy_threadref (threadref
*dest
, threadref
*src
)
1392 unsigned char *csrc
, *cdest
;
1394 csrc
= (unsigned char *) src
;
1395 cdest
= (unsigned char *) dest
;
1402 threadmatch (threadref
*dest
, threadref
*src
)
1404 /* things are broken right now, so just assume we got a match */
1406 unsigned char *srcp
, *destp
;
1408 srcp
= (char *) src
;
1409 destp
= (char *) dest
;
1413 result
&= (*srcp
++ == *destp
++) ? 1 : 0;
1420 threadid:1, # always request threadid
1427 /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */
1430 pack_threadinfo_request (char *pkt
, int mode
, threadref
*id
)
1432 *pkt
++ = 'q'; /* Info Query */
1433 *pkt
++ = 'P'; /* process or thread info */
1434 pkt
= pack_int (pkt
, mode
); /* mode */
1435 pkt
= pack_threadid (pkt
, id
); /* threadid */
1436 *pkt
= '\0'; /* terminate */
1440 /* These values tag the fields in a thread info response packet */
1441 /* Tagging the fields allows us to request specific fields and to
1442 add more fields as time goes by */
1444 #define TAG_THREADID 1 /* Echo the thread identifier */
1445 #define TAG_EXISTS 2 /* Is this process defined enough to
1446 fetch registers and its stack */
1447 #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */
1448 #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is */
1449 #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about
1453 remote_unpack_thread_info_response (char *pkt
, threadref
*expectedref
,
1454 struct gdb_ext_thread_info
*info
)
1456 struct remote_state
*rs
= get_remote_state ();
1460 char *limit
= pkt
+ (rs
->remote_packet_size
); /* plausable parsing limit */
1463 /* info->threadid = 0; FIXME: implement zero_threadref */
1465 info
->display
[0] = '\0';
1466 info
->shortname
[0] = '\0';
1467 info
->more_display
[0] = '\0';
1469 /* Assume the characters indicating the packet type have been stripped */
1470 pkt
= unpack_int (pkt
, &mask
); /* arg mask */
1471 pkt
= unpack_threadid (pkt
, &ref
);
1474 warning ("Incomplete response to threadinfo request\n");
1475 if (!threadmatch (&ref
, expectedref
))
1476 { /* This is an answer to a different request */
1477 warning ("ERROR RMT Thread info mismatch\n");
1480 copy_threadref (&info
->threadid
, &ref
);
1482 /* Loop on tagged fields , try to bail if somthing goes wrong */
1484 while ((pkt
< limit
) && mask
&& *pkt
) /* packets are terminated with nulls */
1486 pkt
= unpack_int (pkt
, &tag
); /* tag */
1487 pkt
= unpack_byte (pkt
, &length
); /* length */
1488 if (!(tag
& mask
)) /* tags out of synch with mask */
1490 warning ("ERROR RMT: threadinfo tag mismatch\n");
1494 if (tag
== TAG_THREADID
)
1498 warning ("ERROR RMT: length of threadid is not 16\n");
1502 pkt
= unpack_threadid (pkt
, &ref
);
1503 mask
= mask
& ~TAG_THREADID
;
1506 if (tag
== TAG_EXISTS
)
1508 info
->active
= stub_unpack_int (pkt
, length
);
1510 mask
= mask
& ~(TAG_EXISTS
);
1513 warning ("ERROR RMT: 'exists' length too long\n");
1519 if (tag
== TAG_THREADNAME
)
1521 pkt
= unpack_string (pkt
, &info
->shortname
[0], length
);
1522 mask
= mask
& ~TAG_THREADNAME
;
1525 if (tag
== TAG_DISPLAY
)
1527 pkt
= unpack_string (pkt
, &info
->display
[0], length
);
1528 mask
= mask
& ~TAG_DISPLAY
;
1531 if (tag
== TAG_MOREDISPLAY
)
1533 pkt
= unpack_string (pkt
, &info
->more_display
[0], length
);
1534 mask
= mask
& ~TAG_MOREDISPLAY
;
1537 warning ("ERROR RMT: unknown thread info tag\n");
1538 break; /* Not a tag we know about */
1544 remote_get_threadinfo (threadref
*threadid
, int fieldset
, /* TAG mask */
1545 struct gdb_ext_thread_info
*info
)
1547 struct remote_state
*rs
= get_remote_state ();
1549 char *threadinfo_pkt
= alloca (rs
->remote_packet_size
);
1551 pack_threadinfo_request (threadinfo_pkt
, fieldset
, threadid
);
1552 putpkt (threadinfo_pkt
);
1553 getpkt (threadinfo_pkt
, (rs
->remote_packet_size
), 0);
1554 result
= remote_unpack_thread_info_response (threadinfo_pkt
+ 2, threadid
,
1559 /* Unfortunately, 61 bit thread-ids are bigger than the internal
1560 representation of a threadid. */
1563 adapt_remote_get_threadinfo (gdb_threadref
*ref
, int selection
,
1564 struct gdb_ext_thread_info
*info
)
1568 int_to_threadref (&lclref
, *ref
);
1569 return remote_get_threadinfo (&lclref
, selection
, info
);
1572 /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */
1575 pack_threadlist_request (char *pkt
, int startflag
, int threadcount
,
1576 threadref
*nextthread
)
1578 *pkt
++ = 'q'; /* info query packet */
1579 *pkt
++ = 'L'; /* Process LIST or threadLIST request */
1580 pkt
= pack_nibble (pkt
, startflag
); /* initflag 1 bytes */
1581 pkt
= pack_hex_byte (pkt
, threadcount
); /* threadcount 2 bytes */
1582 pkt
= pack_threadid (pkt
, nextthread
); /* 64 bit thread identifier */
1587 /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */
1590 parse_threadlist_response (char *pkt
, int result_limit
,
1591 threadref
*original_echo
, threadref
*resultlist
,
1594 struct remote_state
*rs
= get_remote_state ();
1596 int count
, resultcount
, done
;
1599 /* Assume the 'q' and 'M chars have been stripped. */
1600 limit
= pkt
+ ((rs
->remote_packet_size
) - BUF_THREAD_ID_SIZE
); /* done parse past here */
1601 pkt
= unpack_byte (pkt
, &count
); /* count field */
1602 pkt
= unpack_nibble (pkt
, &done
);
1603 /* The first threadid is the argument threadid. */
1604 pkt
= unpack_threadid (pkt
, original_echo
); /* should match query packet */
1605 while ((count
-- > 0) && (pkt
< limit
))
1607 pkt
= unpack_threadid (pkt
, resultlist
++);
1608 if (resultcount
++ >= result_limit
)
1617 remote_get_threadlist (int startflag
, threadref
*nextthread
, int result_limit
,
1618 int *done
, int *result_count
, threadref
*threadlist
)
1620 struct remote_state
*rs
= get_remote_state ();
1621 static threadref echo_nextthread
;
1622 char *threadlist_packet
= alloca (rs
->remote_packet_size
);
1623 char *t_response
= alloca (rs
->remote_packet_size
);
1626 /* Trancate result limit to be smaller than the packet size */
1627 if ((((result_limit
+ 1) * BUF_THREAD_ID_SIZE
) + 10) >= (rs
->remote_packet_size
))
1628 result_limit
= ((rs
->remote_packet_size
) / BUF_THREAD_ID_SIZE
) - 2;
1630 pack_threadlist_request (threadlist_packet
,
1631 startflag
, result_limit
, nextthread
);
1632 putpkt (threadlist_packet
);
1633 getpkt (t_response
, (rs
->remote_packet_size
), 0);
1636 parse_threadlist_response (t_response
+ 2, result_limit
, &echo_nextthread
,
1639 if (!threadmatch (&echo_nextthread
, nextthread
))
1641 /* FIXME: This is a good reason to drop the packet */
1642 /* Possably, there is a duplicate response */
1644 retransmit immediatly - race conditions
1645 retransmit after timeout - yes
1647 wait for packet, then exit
1649 warning ("HMM: threadlist did not echo arg thread, dropping it\n");
1650 return 0; /* I choose simply exiting */
1652 if (*result_count
<= 0)
1656 warning ("RMT ERROR : failed to get remote thread list\n");
1659 return result
; /* break; */
1661 if (*result_count
> result_limit
)
1664 warning ("RMT ERROR: threadlist response longer than requested\n");
1670 /* This is the interface between remote and threads, remotes upper interface */
1672 /* remote_find_new_threads retrieves the thread list and for each
1673 thread in the list, looks up the thread in GDB's internal list,
1674 ading the thread if it does not already exist. This involves
1675 getting partial thread lists from the remote target so, polling the
1676 quit_flag is required. */
1679 /* About this many threadisds fit in a packet. */
1681 #define MAXTHREADLISTRESULTS 32
1684 remote_threadlist_iterator (rmt_thread_action stepfunction
, void *context
,
1687 int done
, i
, result_count
;
1691 static threadref nextthread
;
1692 static threadref resultthreadlist
[MAXTHREADLISTRESULTS
];
1697 if (loopcount
++ > looplimit
)
1700 warning ("Remote fetch threadlist -infinite loop-\n");
1703 if (!remote_get_threadlist (startflag
, &nextthread
, MAXTHREADLISTRESULTS
,
1704 &done
, &result_count
, resultthreadlist
))
1709 /* clear for later iterations */
1711 /* Setup to resume next batch of thread references, set nextthread. */
1712 if (result_count
>= 1)
1713 copy_threadref (&nextthread
, &resultthreadlist
[result_count
- 1]);
1715 while (result_count
--)
1716 if (!(result
= (*stepfunction
) (&resultthreadlist
[i
++], context
)))
1723 remote_newthread_step (threadref
*ref
, void *context
)
1727 ptid
= pid_to_ptid (threadref_to_int (ref
));
1729 if (!in_thread_list (ptid
))
1731 return 1; /* continue iterator */
1734 #define CRAZY_MAX_THREADS 1000
1737 remote_current_thread (ptid_t oldpid
)
1739 struct remote_state
*rs
= get_remote_state ();
1740 char *buf
= alloca (rs
->remote_packet_size
);
1743 getpkt (buf
, (rs
->remote_packet_size
), 0);
1744 if (buf
[0] == 'Q' && buf
[1] == 'C')
1745 return pid_to_ptid (strtol (&buf
[2], NULL
, 16));
1750 /* Find new threads for info threads command.
1751 * Original version, using John Metzler's thread protocol.
1755 remote_find_new_threads (void)
1757 remote_threadlist_iterator (remote_newthread_step
, 0,
1759 if (PIDGET (inferior_ptid
) == MAGIC_NULL_PID
) /* ack ack ack */
1760 inferior_ptid
= remote_current_thread (inferior_ptid
);
1764 * Find all threads for info threads command.
1765 * Uses new thread protocol contributed by Cisco.
1766 * Falls back and attempts to use the older method (above)
1767 * if the target doesn't respond to the new method.
1771 remote_threads_info (void)
1773 struct remote_state
*rs
= get_remote_state ();
1774 char *buf
= alloca (rs
->remote_packet_size
);
1778 if (remote_desc
== 0) /* paranoia */
1779 error ("Command can only be used when connected to the remote target.");
1781 if (use_threadinfo_query
)
1783 putpkt ("qfThreadInfo");
1785 getpkt (bufp
, (rs
->remote_packet_size
), 0);
1786 if (bufp
[0] != '\0') /* q packet recognized */
1788 while (*bufp
++ == 'm') /* reply contains one or more TID */
1792 tid
= strtol (bufp
, &bufp
, 16);
1793 if (tid
!= 0 && !in_thread_list (pid_to_ptid (tid
)))
1794 add_thread (pid_to_ptid (tid
));
1796 while (*bufp
++ == ','); /* comma-separated list */
1797 putpkt ("qsThreadInfo");
1799 getpkt (bufp
, (rs
->remote_packet_size
), 0);
1805 /* Else fall back to old method based on jmetzler protocol. */
1806 use_threadinfo_query
= 0;
1807 remote_find_new_threads ();
1812 * Collect a descriptive string about the given thread.
1813 * The target may say anything it wants to about the thread
1814 * (typically info about its blocked / runnable state, name, etc.).
1815 * This string will appear in the info threads display.
1817 * Optional: targets are not required to implement this function.
1821 remote_threads_extra_info (struct thread_info
*tp
)
1823 struct remote_state
*rs
= get_remote_state ();
1827 struct gdb_ext_thread_info threadinfo
;
1828 static char display_buf
[100]; /* arbitrary... */
1829 char *bufp
= alloca (rs
->remote_packet_size
);
1830 int n
= 0; /* position in display_buf */
1832 if (remote_desc
== 0) /* paranoia */
1833 internal_error (__FILE__
, __LINE__
,
1834 "remote_threads_extra_info");
1836 if (use_threadextra_query
)
1838 sprintf (bufp
, "qThreadExtraInfo,%x", PIDGET (tp
->ptid
));
1840 getpkt (bufp
, (rs
->remote_packet_size
), 0);
1843 n
= min (strlen (bufp
) / 2, sizeof (display_buf
));
1844 result
= hex2bin (bufp
, display_buf
, n
);
1845 display_buf
[result
] = '\0';
1850 /* If the above query fails, fall back to the old method. */
1851 use_threadextra_query
= 0;
1852 set
= TAG_THREADID
| TAG_EXISTS
| TAG_THREADNAME
1853 | TAG_MOREDISPLAY
| TAG_DISPLAY
;
1854 int_to_threadref (&id
, PIDGET (tp
->ptid
));
1855 if (remote_get_threadinfo (&id
, set
, &threadinfo
))
1856 if (threadinfo
.active
)
1858 if (*threadinfo
.shortname
)
1859 n
+= sprintf(&display_buf
[0], " Name: %s,", threadinfo
.shortname
);
1860 if (*threadinfo
.display
)
1861 n
+= sprintf(&display_buf
[n
], " State: %s,", threadinfo
.display
);
1862 if (*threadinfo
.more_display
)
1863 n
+= sprintf(&display_buf
[n
], " Priority: %s",
1864 threadinfo
.more_display
);
1868 /* for purely cosmetic reasons, clear up trailing commas */
1869 if (',' == display_buf
[n
-1])
1870 display_buf
[n
-1] = ' ';
1879 /* Restart the remote side; this is an extended protocol operation. */
1882 extended_remote_restart (void)
1884 struct remote_state
*rs
= get_remote_state ();
1885 char *buf
= alloca (rs
->remote_packet_size
);
1887 /* Send the restart command; for reasons I don't understand the
1888 remote side really expects a number after the "R". */
1890 sprintf (&buf
[1], "%x", 0);
1893 /* Now query for status so this looks just like we restarted
1894 gdbserver from scratch. */
1896 getpkt (buf
, (rs
->remote_packet_size
), 0);
1899 /* Clean up connection to a remote debugger. */
1903 remote_close (int quitting
)
1906 serial_close (remote_desc
);
1910 /* Query the remote side for the text, data and bss offsets. */
1915 struct remote_state
*rs
= get_remote_state ();
1916 char *buf
= alloca (rs
->remote_packet_size
);
1919 CORE_ADDR text_addr
, data_addr
, bss_addr
;
1920 struct section_offsets
*offs
;
1922 putpkt ("qOffsets");
1924 getpkt (buf
, (rs
->remote_packet_size
), 0);
1926 if (buf
[0] == '\000')
1927 return; /* Return silently. Stub doesn't support
1931 warning ("Remote failure reply: %s", buf
);
1935 /* Pick up each field in turn. This used to be done with scanf, but
1936 scanf will make trouble if CORE_ADDR size doesn't match
1937 conversion directives correctly. The following code will work
1938 with any size of CORE_ADDR. */
1939 text_addr
= data_addr
= bss_addr
= 0;
1943 if (strncmp (ptr
, "Text=", 5) == 0)
1946 /* Don't use strtol, could lose on big values. */
1947 while (*ptr
&& *ptr
!= ';')
1948 text_addr
= (text_addr
<< 4) + fromhex (*ptr
++);
1953 if (!lose
&& strncmp (ptr
, ";Data=", 6) == 0)
1956 while (*ptr
&& *ptr
!= ';')
1957 data_addr
= (data_addr
<< 4) + fromhex (*ptr
++);
1962 if (!lose
&& strncmp (ptr
, ";Bss=", 5) == 0)
1965 while (*ptr
&& *ptr
!= ';')
1966 bss_addr
= (bss_addr
<< 4) + fromhex (*ptr
++);
1972 error ("Malformed response to offset query, %s", buf
);
1974 if (symfile_objfile
== NULL
)
1977 offs
= (struct section_offsets
*) alloca (SIZEOF_SECTION_OFFSETS
);
1978 memcpy (offs
, symfile_objfile
->section_offsets
, SIZEOF_SECTION_OFFSETS
);
1980 offs
->offsets
[SECT_OFF_TEXT (symfile_objfile
)] = text_addr
;
1982 /* This is a temporary kludge to force data and bss to use the same offsets
1983 because that's what nlmconv does now. The real solution requires changes
1984 to the stub and remote.c that I don't have time to do right now. */
1986 offs
->offsets
[SECT_OFF_DATA (symfile_objfile
)] = data_addr
;
1987 offs
->offsets
[SECT_OFF_BSS (symfile_objfile
)] = data_addr
;
1989 objfile_relocate (symfile_objfile
, offs
);
1993 * Cisco version of section offsets:
1995 * Instead of having GDB query the target for the section offsets,
1996 * Cisco lets the target volunteer the information! It's also in
1997 * a different format, so here are the functions that will decode
1998 * a section offset packet from a Cisco target.
2002 * Function: remote_cisco_section_offsets
2004 * Returns: zero for success, non-zero for failure
2008 remote_cisco_section_offsets (bfd_vma text_addr
,
2011 bfd_signed_vma
*text_offs
,
2012 bfd_signed_vma
*data_offs
,
2013 bfd_signed_vma
*bss_offs
)
2015 bfd_vma text_base
, data_base
, bss_base
;
2016 struct minimal_symbol
*start
;
2021 if (symfile_objfile
== NULL
)
2022 return -1; /* no can do nothin' */
2024 start
= lookup_minimal_symbol ("_start", NULL
, NULL
);
2026 return -1; /* Can't find "_start" symbol */
2028 data_base
= bss_base
= 0;
2029 text_base
= SYMBOL_VALUE_ADDRESS (start
);
2031 abfd
= symfile_objfile
->obfd
;
2032 for (sect
= abfd
->sections
;
2036 const char *p
= bfd_get_section_name (abfd
, sect
);
2038 if (strcmp (p
+ len
- 4, "data") == 0) /* ends in "data" */
2039 if (data_base
== 0 ||
2040 data_base
> bfd_get_section_vma (abfd
, sect
))
2041 data_base
= bfd_get_section_vma (abfd
, sect
);
2042 if (strcmp (p
+ len
- 3, "bss") == 0) /* ends in "bss" */
2043 if (bss_base
== 0 ||
2044 bss_base
> bfd_get_section_vma (abfd
, sect
))
2045 bss_base
= bfd_get_section_vma (abfd
, sect
);
2047 *text_offs
= text_addr
- text_base
;
2048 *data_offs
= data_addr
- data_base
;
2049 *bss_offs
= bss_addr
- bss_base
;
2054 sprintf (tmp
, "VMA: text = 0x");
2055 sprintf_vma (tmp
+ strlen (tmp
), text_addr
);
2056 sprintf (tmp
+ strlen (tmp
), " data = 0x");
2057 sprintf_vma (tmp
+ strlen (tmp
), data_addr
);
2058 sprintf (tmp
+ strlen (tmp
), " bss = 0x");
2059 sprintf_vma (tmp
+ strlen (tmp
), bss_addr
);
2060 fprintf_filtered (gdb_stdlog
, tmp
);
2061 fprintf_filtered (gdb_stdlog
,
2062 "Reloc offset: text = 0x%s data = 0x%s bss = 0x%s\n",
2063 paddr_nz (*text_offs
),
2064 paddr_nz (*data_offs
),
2065 paddr_nz (*bss_offs
));
2072 * Function: remote_cisco_objfile_relocate
2074 * Relocate the symbol file for a remote target.
2078 remote_cisco_objfile_relocate (bfd_signed_vma text_off
, bfd_signed_vma data_off
,
2079 bfd_signed_vma bss_off
)
2081 struct section_offsets
*offs
;
2083 if (text_off
!= 0 || data_off
!= 0 || bss_off
!= 0)
2085 /* FIXME: This code assumes gdb-stabs.h is being used; it's
2086 broken for xcoff, dwarf, sdb-coff, etc. But there is no
2087 simple canonical representation for this stuff. */
2089 offs
= (struct section_offsets
*) alloca (SIZEOF_SECTION_OFFSETS
);
2090 memcpy (offs
, symfile_objfile
->section_offsets
, SIZEOF_SECTION_OFFSETS
);
2092 offs
->offsets
[SECT_OFF_TEXT (symfile_objfile
)] = text_off
;
2093 offs
->offsets
[SECT_OFF_DATA (symfile_objfile
)] = data_off
;
2094 offs
->offsets
[SECT_OFF_BSS (symfile_objfile
)] = bss_off
;
2096 /* First call the standard objfile_relocate. */
2097 objfile_relocate (symfile_objfile
, offs
);
2099 /* Now we need to fix up the section entries already attached to
2100 the exec target. These entries will control memory transfers
2101 from the exec file. */
2103 exec_set_section_offsets (text_off
, data_off
, bss_off
);
2107 /* Stub for catch_errors. */
2110 remote_start_remote_dummy (struct ui_out
*uiout
, void *dummy
)
2112 start_remote (); /* Initialize gdb process mechanisms */
2113 /* NOTE: Return something >=0. A -ve value is reserved for
2114 catch_exceptions. */
2119 remote_start_remote (struct ui_out
*uiout
, void *dummy
)
2121 immediate_quit
++; /* Allow user to interrupt it */
2123 /* Ack any packet which the remote side has already sent. */
2124 serial_write (remote_desc
, "+", 1);
2126 /* Let the stub know that we want it to return the thread. */
2129 inferior_ptid
= remote_current_thread (inferior_ptid
);
2131 get_offsets (); /* Get text, data & bss offsets */
2133 putpkt ("?"); /* initiate a query from remote machine */
2136 /* NOTE: See comment above in remote_start_remote_dummy(). This
2137 function returns something >=0. */
2138 return remote_start_remote_dummy (uiout
, dummy
);
2141 /* Open a connection to a remote debugger.
2142 NAME is the filename used for communication. */
2145 remote_open (char *name
, int from_tty
)
2147 remote_open_1 (name
, from_tty
, &remote_ops
, 0);
2150 /* Just like remote_open, but with asynchronous support. */
2152 remote_async_open (char *name
, int from_tty
)
2154 remote_async_open_1 (name
, from_tty
, &remote_async_ops
, 0);
2157 /* Open a connection to a remote debugger using the extended
2158 remote gdb protocol. NAME is the filename used for communication. */
2161 extended_remote_open (char *name
, int from_tty
)
2163 remote_open_1 (name
, from_tty
, &extended_remote_ops
, 1 /*extended_p */ );
2166 /* Just like extended_remote_open, but with asynchronous support. */
2168 extended_remote_async_open (char *name
, int from_tty
)
2170 remote_async_open_1 (name
, from_tty
, &extended_async_remote_ops
, 1 /*extended_p */ );
2173 /* Generic code for opening a connection to a remote target. */
2176 init_all_packet_configs (void)
2179 update_packet_config (&remote_protocol_e
);
2180 update_packet_config (&remote_protocol_E
);
2181 update_packet_config (&remote_protocol_P
);
2182 update_packet_config (&remote_protocol_qSymbol
);
2183 for (i
= 0; i
< NR_Z_PACKET_TYPES
; i
++)
2184 update_packet_config (&remote_protocol_Z
[i
]);
2185 /* Force remote_write_bytes to check whether target supports binary
2187 update_packet_config (&remote_protocol_binary_download
);
2190 /* Symbol look-up. */
2193 remote_check_symbols (struct objfile
*objfile
)
2195 struct remote_state
*rs
= get_remote_state ();
2196 char *msg
, *reply
, *tmp
;
2197 struct minimal_symbol
*sym
;
2200 if (remote_protocol_qSymbol
.support
== PACKET_DISABLE
)
2203 msg
= alloca (rs
->remote_packet_size
);
2204 reply
= alloca (rs
->remote_packet_size
);
2206 /* Invite target to request symbol lookups. */
2208 putpkt ("qSymbol::");
2209 getpkt (reply
, (rs
->remote_packet_size
), 0);
2210 packet_ok (reply
, &remote_protocol_qSymbol
);
2212 while (strncmp (reply
, "qSymbol:", 8) == 0)
2215 end
= hex2bin (tmp
, msg
, strlen (tmp
) / 2);
2217 sym
= lookup_minimal_symbol (msg
, NULL
, NULL
);
2219 sprintf (msg
, "qSymbol::%s", &reply
[8]);
2221 sprintf (msg
, "qSymbol:%s:%s",
2222 paddr_nz (SYMBOL_VALUE_ADDRESS (sym
)),
2225 getpkt (reply
, (rs
->remote_packet_size
), 0);
2229 static struct serial
*
2230 remote_serial_open (char *name
)
2232 static int udp_warning
= 0;
2234 /* FIXME: Parsing NAME here is a hack. But we want to warn here instead
2235 of in ser-tcp.c, because it is the remote protocol assuming that the
2236 serial connection is reliable and not the serial connection promising
2238 if (!udp_warning
&& strncmp (name
, "udp:", 4) == 0)
2240 warning ("The remote protocol may be unreliable over UDP.");
2241 warning ("Some events may be lost, rendering further debugging "
2246 return serial_open (name
);
2250 remote_open_1 (char *name
, int from_tty
, struct target_ops
*target
,
2254 struct remote_state
*rs
= get_remote_state ();
2256 error ("To open a remote debug connection, you need to specify what\n"
2257 "serial device is attached to the remote system\n"
2258 "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).");
2260 /* See FIXME above */
2261 wait_forever_enabled_p
= 1;
2263 target_preopen (from_tty
);
2265 unpush_target (target
);
2267 remote_desc
= remote_serial_open (name
);
2269 perror_with_name (name
);
2271 if (baud_rate
!= -1)
2273 if (serial_setbaudrate (remote_desc
, baud_rate
))
2275 serial_close (remote_desc
);
2276 perror_with_name (name
);
2280 serial_raw (remote_desc
);
2282 /* If there is something sitting in the buffer we might take it as a
2283 response to a command, which would be bad. */
2284 serial_flush_input (remote_desc
);
2288 puts_filtered ("Remote debugging using ");
2289 puts_filtered (name
);
2290 puts_filtered ("\n");
2292 push_target (target
); /* Switch to using remote target now */
2294 init_all_packet_configs ();
2296 general_thread
= -2;
2297 continue_thread
= -2;
2299 /* Probe for ability to use "ThreadInfo" query, as required. */
2300 use_threadinfo_query
= 1;
2301 use_threadextra_query
= 1;
2303 /* Without this, some commands which require an active target (such
2304 as kill) won't work. This variable serves (at least) double duty
2305 as both the pid of the target process (if it has such), and as a
2306 flag indicating that a target is active. These functions should
2307 be split out into seperate variables, especially since GDB will
2308 someday have a notion of debugging several processes. */
2310 inferior_ptid
= pid_to_ptid (MAGIC_NULL_PID
);
2311 #ifdef SOLIB_CREATE_INFERIOR_HOOK
2312 /* First delete any symbols previously loaded from shared libraries. */
2313 no_shared_libraries (NULL
, 0);
2316 /* Start the remote connection. If error() or QUIT, discard this
2317 target (we'd otherwise be in an inconsistent state).
2319 FIXME: cagney/2002-05-19: Instead of re-throwing the exception,
2320 this function should return an error indication letting the
2321 caller restore the previous state. Unfortunatly the command
2322 ``target remote'' is directly wired to this function making that
2323 impossible. On a positive note, the CLI side of this problem has
2324 been fixed - the function set_cmd_context() makes it possible for
2325 all the ``target ....'' commands to share a common callback
2326 function. See cli-dump.c. */
2327 ex
= catch_exceptions (uiout
,
2328 remote_start_remote
, NULL
,
2329 "Couldn't establish connection to remote"
2340 /* Tell the remote that we are using the extended protocol. */
2341 char *buf
= alloca (rs
->remote_packet_size
);
2343 getpkt (buf
, (rs
->remote_packet_size
), 0);
2345 #ifdef SOLIB_CREATE_INFERIOR_HOOK
2346 /* FIXME: need a master target_open vector from which all
2347 remote_opens can be called, so that stuff like this can
2348 go there. Failing that, the following code must be copied
2349 to the open function for any remote target that wants to
2350 support svr4 shared libraries. */
2352 /* Set up to detect and load shared libraries. */
2353 if (exec_bfd
) /* No use without an exec file. */
2355 SOLIB_CREATE_INFERIOR_HOOK (PIDGET (inferior_ptid
));
2356 remote_check_symbols (symfile_objfile
);
2361 /* Just like remote_open but with asynchronous support. */
2363 remote_async_open_1 (char *name
, int from_tty
, struct target_ops
*target
,
2367 struct remote_state
*rs
= get_remote_state ();
2369 error ("To open a remote debug connection, you need to specify what\n"
2370 "serial device is attached to the remote system\n"
2371 "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).");
2373 target_preopen (from_tty
);
2375 unpush_target (target
);
2377 remote_desc
= remote_serial_open (name
);
2379 perror_with_name (name
);
2381 if (baud_rate
!= -1)
2383 if (serial_setbaudrate (remote_desc
, baud_rate
))
2385 serial_close (remote_desc
);
2386 perror_with_name (name
);
2390 serial_raw (remote_desc
);
2392 /* If there is something sitting in the buffer we might take it as a
2393 response to a command, which would be bad. */
2394 serial_flush_input (remote_desc
);
2398 puts_filtered ("Remote debugging using ");
2399 puts_filtered (name
);
2400 puts_filtered ("\n");
2403 push_target (target
); /* Switch to using remote target now */
2405 init_all_packet_configs ();
2407 general_thread
= -2;
2408 continue_thread
= -2;
2410 /* Probe for ability to use "ThreadInfo" query, as required. */
2411 use_threadinfo_query
= 1;
2412 use_threadextra_query
= 1;
2414 /* Without this, some commands which require an active target (such
2415 as kill) won't work. This variable serves (at least) double duty
2416 as both the pid of the target process (if it has such), and as a
2417 flag indicating that a target is active. These functions should
2418 be split out into seperate variables, especially since GDB will
2419 someday have a notion of debugging several processes. */
2420 inferior_ptid
= pid_to_ptid (MAGIC_NULL_PID
);
2422 /* With this target we start out by owning the terminal. */
2423 remote_async_terminal_ours_p
= 1;
2425 /* FIXME: cagney/1999-09-23: During the initial connection it is
2426 assumed that the target is already ready and able to respond to
2427 requests. Unfortunately remote_start_remote() eventually calls
2428 wait_for_inferior() with no timeout. wait_forever_enabled_p gets
2429 around this. Eventually a mechanism that allows
2430 wait_for_inferior() to expect/get timeouts will be
2432 wait_forever_enabled_p
= 0;
2434 #ifdef SOLIB_CREATE_INFERIOR_HOOK
2435 /* First delete any symbols previously loaded from shared libraries. */
2436 no_shared_libraries (NULL
, 0);
2439 /* Start the remote connection; if error, discard this target. See
2440 the comments in remote_open_1() for further details. */
2441 ex
= catch_exceptions (uiout
,
2442 remote_start_remote
, NULL
,
2443 "Couldn't establish connection to remote"
2449 wait_forever_enabled_p
= 1;
2453 wait_forever_enabled_p
= 1;
2457 /* Tell the remote that we are using the extended protocol. */
2458 char *buf
= alloca (rs
->remote_packet_size
);
2460 getpkt (buf
, (rs
->remote_packet_size
), 0);
2462 #ifdef SOLIB_CREATE_INFERIOR_HOOK
2463 /* FIXME: need a master target_open vector from which all
2464 remote_opens can be called, so that stuff like this can
2465 go there. Failing that, the following code must be copied
2466 to the open function for any remote target that wants to
2467 support svr4 shared libraries. */
2469 /* Set up to detect and load shared libraries. */
2470 if (exec_bfd
) /* No use without an exec file. */
2472 SOLIB_CREATE_INFERIOR_HOOK (PIDGET (inferior_ptid
));
2473 remote_check_symbols (symfile_objfile
);
2478 /* This takes a program previously attached to and detaches it. After
2479 this is done, GDB can be used to debug some other program. We
2480 better not have left any breakpoints in the target program or it'll
2481 die when it hits one. */
2484 remote_detach (char *args
, int from_tty
)
2486 struct remote_state
*rs
= get_remote_state ();
2487 char *buf
= alloca (rs
->remote_packet_size
);
2490 error ("Argument given to \"detach\" when remotely debugging.");
2492 /* Tell the remote target to detach. */
2494 remote_send (buf
, (rs
->remote_packet_size
));
2496 target_mourn_inferior ();
2498 puts_filtered ("Ending remote debugging.\n");
2502 /* Same as remote_detach, but with async support. */
2504 remote_async_detach (char *args
, int from_tty
)
2506 struct remote_state
*rs
= get_remote_state ();
2507 char *buf
= alloca (rs
->remote_packet_size
);
2510 error ("Argument given to \"detach\" when remotely debugging.");
2512 /* Tell the remote target to detach. */
2514 remote_send (buf
, (rs
->remote_packet_size
));
2516 /* Unregister the file descriptor from the event loop. */
2517 if (target_is_async_p ())
2518 serial_async (remote_desc
, NULL
, 0);
2520 target_mourn_inferior ();
2522 puts_filtered ("Ending remote debugging.\n");
2525 /* Convert hex digit A to a number. */
2530 if (a
>= '0' && a
<= '9')
2532 else if (a
>= 'a' && a
<= 'f')
2533 return a
- 'a' + 10;
2534 else if (a
>= 'A' && a
<= 'F')
2535 return a
- 'A' + 10;
2537 error ("Reply contains invalid hex digit %d", a
);
2541 hex2bin (const char *hex
, char *bin
, int count
)
2545 for (i
= 0; i
< count
; i
++)
2547 if (hex
[0] == 0 || hex
[1] == 0)
2549 /* Hex string is short, or of uneven length.
2550 Return the count that has been converted so far. */
2553 *bin
++ = fromhex (hex
[0]) * 16 + fromhex (hex
[1]);
2559 /* Convert number NIB to a hex digit. */
2567 return 'a' + nib
- 10;
2571 bin2hex (const char *bin
, char *hex
, int count
)
2574 /* May use a length, or a nul-terminated string as input. */
2576 count
= strlen (bin
);
2578 for (i
= 0; i
< count
; i
++)
2580 *hex
++ = tohex ((*bin
>> 4) & 0xf);
2581 *hex
++ = tohex (*bin
++ & 0xf);
2587 /* Tell the remote machine to resume. */
2589 static enum target_signal last_sent_signal
= TARGET_SIGNAL_0
;
2591 static int last_sent_step
;
2594 remote_resume (ptid_t ptid
, int step
, enum target_signal siggnal
)
2596 struct remote_state
*rs
= get_remote_state ();
2597 char *buf
= alloca (rs
->remote_packet_size
);
2598 int pid
= PIDGET (ptid
);
2602 set_thread (0, 0); /* run any thread */
2604 set_thread (pid
, 0); /* run this thread */
2606 last_sent_signal
= siggnal
;
2607 last_sent_step
= step
;
2609 /* A hook for when we need to do something at the last moment before
2611 if (target_resume_hook
)
2612 (*target_resume_hook
) ();
2615 /* The s/S/c/C packets do not return status. So if the target does
2616 not support the S or C packets, the debug agent returns an empty
2617 string which is detected in remote_wait(). This protocol defect
2618 is fixed in the e/E packets. */
2620 if (step
&& step_range_end
)
2622 /* If the target does not support the 'E' packet, we try the 'S'
2623 packet. Ideally we would fall back to the 'e' packet if that
2624 too is not supported. But that would require another copy of
2625 the code to issue the 'e' packet (and fall back to 's' if not
2626 supported) in remote_wait(). */
2628 if (siggnal
!= TARGET_SIGNAL_0
)
2630 if (remote_protocol_E
.support
!= PACKET_DISABLE
)
2634 *p
++ = tohex (((int) siggnal
>> 4) & 0xf);
2635 *p
++ = tohex (((int) siggnal
) & 0xf);
2637 p
+= hexnumstr (p
, (ULONGEST
) step_range_start
);
2639 p
+= hexnumstr (p
, (ULONGEST
) step_range_end
);
2643 getpkt (buf
, (rs
->remote_packet_size
), 0);
2645 if (packet_ok (buf
, &remote_protocol_E
) == PACKET_OK
)
2651 if (remote_protocol_e
.support
!= PACKET_DISABLE
)
2655 p
+= hexnumstr (p
, (ULONGEST
) step_range_start
);
2657 p
+= hexnumstr (p
, (ULONGEST
) step_range_end
);
2661 getpkt (buf
, (rs
->remote_packet_size
), 0);
2663 if (packet_ok (buf
, &remote_protocol_e
) == PACKET_OK
)
2669 if (siggnal
!= TARGET_SIGNAL_0
)
2671 buf
[0] = step
? 'S' : 'C';
2672 buf
[1] = tohex (((int) siggnal
>> 4) & 0xf);
2673 buf
[2] = tohex (((int) siggnal
) & 0xf);
2677 strcpy (buf
, step
? "s" : "c");
2682 /* Same as remote_resume, but with async support. */
2684 remote_async_resume (ptid_t ptid
, int step
, enum target_signal siggnal
)
2686 struct remote_state
*rs
= get_remote_state ();
2687 char *buf
= alloca (rs
->remote_packet_size
);
2688 int pid
= PIDGET (ptid
);
2692 set_thread (0, 0); /* run any thread */
2694 set_thread (pid
, 0); /* run this thread */
2696 last_sent_signal
= siggnal
;
2697 last_sent_step
= step
;
2699 /* A hook for when we need to do something at the last moment before
2701 if (target_resume_hook
)
2702 (*target_resume_hook
) ();
2704 /* The s/S/c/C packets do not return status. So if the target does
2705 not support the S or C packets, the debug agent returns an empty
2706 string which is detected in remote_wait(). This protocol defect
2707 is fixed in the e/E packets. */
2709 if (step
&& step_range_end
)
2711 /* If the target does not support the 'E' packet, we try the 'S'
2712 packet. Ideally we would fall back to the 'e' packet if that
2713 too is not supported. But that would require another copy of
2714 the code to issue the 'e' packet (and fall back to 's' if not
2715 supported) in remote_wait(). */
2717 if (siggnal
!= TARGET_SIGNAL_0
)
2719 if (remote_protocol_E
.support
!= PACKET_DISABLE
)
2723 *p
++ = tohex (((int) siggnal
>> 4) & 0xf);
2724 *p
++ = tohex (((int) siggnal
) & 0xf);
2726 p
+= hexnumstr (p
, (ULONGEST
) step_range_start
);
2728 p
+= hexnumstr (p
, (ULONGEST
) step_range_end
);
2732 getpkt (buf
, (rs
->remote_packet_size
), 0);
2734 if (packet_ok (buf
, &remote_protocol_E
) == PACKET_OK
)
2735 goto register_event_loop
;
2740 if (remote_protocol_e
.support
!= PACKET_DISABLE
)
2744 p
+= hexnumstr (p
, (ULONGEST
) step_range_start
);
2746 p
+= hexnumstr (p
, (ULONGEST
) step_range_end
);
2750 getpkt (buf
, (rs
->remote_packet_size
), 0);
2752 if (packet_ok (buf
, &remote_protocol_e
) == PACKET_OK
)
2753 goto register_event_loop
;
2758 if (siggnal
!= TARGET_SIGNAL_0
)
2760 buf
[0] = step
? 'S' : 'C';
2761 buf
[1] = tohex (((int) siggnal
>> 4) & 0xf);
2762 buf
[2] = tohex ((int) siggnal
& 0xf);
2766 strcpy (buf
, step
? "s" : "c");
2770 register_event_loop
:
2771 /* We are about to start executing the inferior, let's register it
2772 with the event loop. NOTE: this is the one place where all the
2773 execution commands end up. We could alternatively do this in each
2774 of the execution commands in infcmd.c.*/
2775 /* FIXME: ezannoni 1999-09-28: We may need to move this out of here
2776 into infcmd.c in order to allow inferior function calls to work
2777 NOT asynchronously. */
2778 if (event_loop_p
&& target_can_async_p ())
2779 target_async (inferior_event_handler
, 0);
2780 /* Tell the world that the target is now executing. */
2781 /* FIXME: cagney/1999-09-23: Is it the targets responsibility to set
2782 this? Instead, should the client of target just assume (for
2783 async targets) that the target is going to start executing? Is
2784 this information already found in the continuation block? */
2785 if (target_is_async_p ())
2786 target_executing
= 1;
2790 /* Set up the signal handler for SIGINT, while the target is
2791 executing, ovewriting the 'regular' SIGINT signal handler. */
2793 initialize_sigint_signal_handler (void)
2795 sigint_remote_token
=
2796 create_async_signal_handler (async_remote_interrupt
, NULL
);
2797 signal (SIGINT
, handle_remote_sigint
);
2800 /* Signal handler for SIGINT, while the target is executing. */
2802 handle_remote_sigint (int sig
)
2804 signal (sig
, handle_remote_sigint_twice
);
2805 sigint_remote_twice_token
=
2806 create_async_signal_handler (async_remote_interrupt_twice
, NULL
);
2807 mark_async_signal_handler_wrapper (sigint_remote_token
);
2810 /* Signal handler for SIGINT, installed after SIGINT has already been
2811 sent once. It will take effect the second time that the user sends
2814 handle_remote_sigint_twice (int sig
)
2816 signal (sig
, handle_sigint
);
2817 sigint_remote_twice_token
=
2818 create_async_signal_handler (inferior_event_handler_wrapper
, NULL
);
2819 mark_async_signal_handler_wrapper (sigint_remote_twice_token
);
2822 /* Perform the real interruption of the target execution, in response
2825 async_remote_interrupt (gdb_client_data arg
)
2828 fprintf_unfiltered (gdb_stdlog
, "remote_interrupt called\n");
2833 /* Perform interrupt, if the first attempt did not succeed. Just give
2834 up on the target alltogether. */
2836 async_remote_interrupt_twice (gdb_client_data arg
)
2839 fprintf_unfiltered (gdb_stdlog
, "remote_interrupt_twice called\n");
2840 /* Do something only if the target was not killed by the previous
2842 if (target_executing
)
2845 signal (SIGINT
, handle_remote_sigint
);
2849 /* Reinstall the usual SIGINT handlers, after the target has
2852 cleanup_sigint_signal_handler (void *dummy
)
2854 signal (SIGINT
, handle_sigint
);
2855 if (sigint_remote_twice_token
)
2856 delete_async_signal_handler ((struct async_signal_handler
**) & sigint_remote_twice_token
);
2857 if (sigint_remote_token
)
2858 delete_async_signal_handler ((struct async_signal_handler
**) & sigint_remote_token
);
2861 /* Send ^C to target to halt it. Target will respond, and send us a
2863 static void (*ofunc
) (int);
2865 /* The command line interface's stop routine. This function is installed
2866 as a signal handler for SIGINT. The first time a user requests a
2867 stop, we call remote_stop to send a break or ^C. If there is no
2868 response from the target (it didn't stop when the user requested it),
2869 we ask the user if he'd like to detach from the target. */
2871 remote_interrupt (int signo
)
2873 /* If this doesn't work, try more severe steps. */
2874 signal (signo
, remote_interrupt_twice
);
2877 fprintf_unfiltered (gdb_stdlog
, "remote_interrupt called\n");
2882 /* The user typed ^C twice. */
2885 remote_interrupt_twice (int signo
)
2887 signal (signo
, ofunc
);
2889 signal (signo
, remote_interrupt
);
2892 /* This is the generic stop called via the target vector. When a target
2893 interrupt is requested, either by the command line or the GUI, we
2894 will eventually end up here. */
2898 /* Send a break or a ^C, depending on user preference. */
2900 fprintf_unfiltered (gdb_stdlog
, "remote_stop called\n");
2903 serial_send_break (remote_desc
);
2905 serial_write (remote_desc
, "\003", 1);
2908 /* Ask the user what to do when an interrupt is received. */
2911 interrupt_query (void)
2913 target_terminal_ours ();
2915 if (query ("Interrupted while waiting for the program.\n\
2916 Give up (and stop debugging it)? "))
2918 target_mourn_inferior ();
2919 throw_exception (RETURN_QUIT
);
2922 target_terminal_inferior ();
2925 /* Enable/disable target terminal ownership. Most targets can use
2926 terminal groups to control terminal ownership. Remote targets are
2927 different in that explicit transfer of ownership to/from GDB/target
2931 remote_async_terminal_inferior (void)
2933 /* FIXME: cagney/1999-09-27: Shouldn't need to test for
2934 sync_execution here. This function should only be called when
2935 GDB is resuming the inferior in the forground. A background
2936 resume (``run&'') should leave GDB in control of the terminal and
2937 consequently should not call this code. */
2938 if (!sync_execution
)
2940 /* FIXME: cagney/1999-09-27: Closely related to the above. Make
2941 calls target_terminal_*() idenpotent. The event-loop GDB talking
2942 to an asynchronous target with a synchronous command calls this
2943 function from both event-top.c and infrun.c/infcmd.c. Once GDB
2944 stops trying to transfer the terminal to the target when it
2945 shouldn't this guard can go away. */
2946 if (!remote_async_terminal_ours_p
)
2948 delete_file_handler (input_fd
);
2949 remote_async_terminal_ours_p
= 0;
2950 initialize_sigint_signal_handler ();
2951 /* NOTE: At this point we could also register our selves as the
2952 recipient of all input. Any characters typed could then be
2953 passed on down to the target. */
2957 remote_async_terminal_ours (void)
2959 /* See FIXME in remote_async_terminal_inferior. */
2960 if (!sync_execution
)
2962 /* See FIXME in remote_async_terminal_inferior. */
2963 if (remote_async_terminal_ours_p
)
2965 cleanup_sigint_signal_handler (NULL
);
2966 add_file_handler (input_fd
, stdin_event_handler
, 0);
2967 remote_async_terminal_ours_p
= 1;
2970 /* If nonzero, ignore the next kill. */
2975 remote_console_output (char *msg
)
2979 for (p
= msg
; p
[0] && p
[1]; p
+= 2)
2982 char c
= fromhex (p
[0]) * 16 + fromhex (p
[1]);
2985 fputs_unfiltered (tb
, gdb_stdtarg
);
2987 gdb_flush (gdb_stdtarg
);
2990 /* Wait until the remote machine stops, then return,
2991 storing status in STATUS just as `wait' would.
2992 Returns "pid", which in the case of a multi-threaded
2993 remote OS, is the thread-id. */
2996 remote_wait (ptid_t ptid
, struct target_waitstatus
*status
)
2998 struct remote_state
*rs
= get_remote_state ();
2999 unsigned char *buf
= alloca (rs
->remote_packet_size
);
3000 int thread_num
= -1;
3002 status
->kind
= TARGET_WAITKIND_EXITED
;
3003 status
->value
.integer
= 0;
3009 ofunc
= signal (SIGINT
, remote_interrupt
);
3010 getpkt (buf
, (rs
->remote_packet_size
), 1);
3011 signal (SIGINT
, ofunc
);
3013 /* This is a hook for when we need to do something (perhaps the
3014 collection of trace data) every time the target stops. */
3015 if (target_wait_loop_hook
)
3016 (*target_wait_loop_hook
) ();
3020 case 'E': /* Error of some sort */
3021 warning ("Remote failure reply: %s", buf
);
3023 case 'T': /* Status with PC, SP, FP, ... */
3026 char* regs
= (char*) alloca (MAX_REGISTER_RAW_SIZE
);
3028 /* Expedited reply, containing Signal, {regno, reg} repeat */
3029 /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where
3031 n... = register number
3032 r... = register contents
3034 p
= &buf
[3]; /* after Txx */
3042 /* Read the ``P'' register number. */
3043 LONGEST pnum
= strtol ((const char *) p
, &p_temp
, 16);
3044 p1
= (unsigned char *) p_temp
;
3046 if (p1
== p
) /* No register number present here */
3048 p1
= (unsigned char *) strchr ((const char *) p
, ':');
3050 warning ("Malformed packet(a) (missing colon): %s\n\
3053 if (strncmp ((const char *) p
, "thread", p1
- p
) == 0)
3055 p_temp
= unpack_varlen_hex (++p1
, &thread_num
);
3056 record_currthread (thread_num
);
3057 p
= (unsigned char *) p_temp
;
3062 struct packet_reg
*reg
= packet_reg_from_pnum (rs
, pnum
);
3066 warning ("Malformed packet(b) (missing colon): %s\n\
3071 warning ("Remote sent bad register number %s: %s\n\
3073 phex_nz (pnum
, 0), p
, buf
);
3075 fieldsize
= hex2bin (p
, regs
, REGISTER_RAW_SIZE (reg
->regnum
));
3077 if (fieldsize
< REGISTER_RAW_SIZE (reg
->regnum
))
3078 warning ("Remote reply is too short: %s", buf
);
3079 supply_register (reg
->regnum
, regs
);
3084 warning ("Remote register badly formatted: %s", buf
);
3085 warning (" here: %s", p
);
3090 case 'S': /* Old style status, just signal only */
3091 status
->kind
= TARGET_WAITKIND_STOPPED
;
3092 status
->value
.sig
= (enum target_signal
)
3093 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
3097 /* Export Cisco kernel mode as a convenience variable
3098 (so that it can be used in the GDB prompt if desired). */
3100 if (cisco_kernel_mode
== 1)
3101 set_internalvar (lookup_internalvar ("cisco_kernel_mode"),
3102 value_from_string ("PDEBUG-"));
3103 cisco_kernel_mode
= 0;
3104 thread_num
= strtol ((const char *) &buf
[4], NULL
, 16);
3105 record_currthread (thread_num
);
3107 else if (buf
[3] == 'k')
3109 /* Export Cisco kernel mode as a convenience variable
3110 (so that it can be used in the GDB prompt if desired). */
3112 if (cisco_kernel_mode
== 1)
3113 set_internalvar (lookup_internalvar ("cisco_kernel_mode"),
3114 value_from_string ("KDEBUG-"));
3115 cisco_kernel_mode
= 1;
3118 case 'N': /* Cisco special: status and offsets */
3120 bfd_vma text_addr
, data_addr
, bss_addr
;
3121 bfd_signed_vma text_off
, data_off
, bss_off
;
3124 status
->kind
= TARGET_WAITKIND_STOPPED
;
3125 status
->value
.sig
= (enum target_signal
)
3126 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
3128 if (symfile_objfile
== NULL
)
3130 warning ("Relocation packet received with no symbol file. \
3135 /* Relocate object file. Buffer format is NAATT;DD;BB
3136 * where AA is the signal number, TT is the new text
3137 * address, DD * is the new data address, and BB is the
3138 * new bss address. */
3141 text_addr
= strtoul (p
, (char **) &p1
, 16);
3142 if (p1
== p
|| *p1
!= ';')
3143 warning ("Malformed relocation packet: Packet '%s'", buf
);
3145 data_addr
= strtoul (p
, (char **) &p1
, 16);
3146 if (p1
== p
|| *p1
!= ';')
3147 warning ("Malformed relocation packet: Packet '%s'", buf
);
3149 bss_addr
= strtoul (p
, (char **) &p1
, 16);
3151 warning ("Malformed relocation packet: Packet '%s'", buf
);
3153 if (remote_cisco_section_offsets (text_addr
, data_addr
, bss_addr
,
3154 &text_off
, &data_off
, &bss_off
)
3156 if (text_off
!= 0 || data_off
!= 0 || bss_off
!= 0)
3157 remote_cisco_objfile_relocate (text_off
, data_off
, bss_off
);
3161 case 'W': /* Target exited */
3163 /* The remote process exited. */
3164 status
->kind
= TARGET_WAITKIND_EXITED
;
3165 status
->value
.integer
= (fromhex (buf
[1]) << 4) + fromhex (buf
[2]);
3169 status
->kind
= TARGET_WAITKIND_SIGNALLED
;
3170 status
->value
.sig
= (enum target_signal
)
3171 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
3175 case 'O': /* Console output */
3176 remote_console_output (buf
+ 1);
3179 if (last_sent_signal
!= TARGET_SIGNAL_0
)
3181 /* Zero length reply means that we tried 'S' or 'C' and
3182 the remote system doesn't support it. */
3183 target_terminal_ours_for_output ();
3185 ("Can't send signals to this remote system. %s not sent.\n",
3186 target_signal_to_name (last_sent_signal
));
3187 last_sent_signal
= TARGET_SIGNAL_0
;
3188 target_terminal_inferior ();
3190 strcpy ((char *) buf
, last_sent_step
? "s" : "c");
3191 putpkt ((char *) buf
);
3194 /* else fallthrough */
3196 warning ("Invalid remote reply: %s", buf
);
3201 if (thread_num
!= -1)
3203 return pid_to_ptid (thread_num
);
3205 return inferior_ptid
;
3208 /* Async version of remote_wait. */
3210 remote_async_wait (ptid_t ptid
, struct target_waitstatus
*status
)
3212 struct remote_state
*rs
= get_remote_state ();
3213 unsigned char *buf
= alloca (rs
->remote_packet_size
);
3214 int thread_num
= -1;
3216 status
->kind
= TARGET_WAITKIND_EXITED
;
3217 status
->value
.integer
= 0;
3223 if (!target_is_async_p ())
3224 ofunc
= signal (SIGINT
, remote_interrupt
);
3225 /* FIXME: cagney/1999-09-27: If we're in async mode we should
3226 _never_ wait for ever -> test on target_is_async_p().
3227 However, before we do that we need to ensure that the caller
3228 knows how to take the target into/out of async mode. */
3229 getpkt (buf
, (rs
->remote_packet_size
), wait_forever_enabled_p
);
3230 if (!target_is_async_p ())
3231 signal (SIGINT
, ofunc
);
3233 /* This is a hook for when we need to do something (perhaps the
3234 collection of trace data) every time the target stops. */
3235 if (target_wait_loop_hook
)
3236 (*target_wait_loop_hook
) ();
3240 case 'E': /* Error of some sort */
3241 warning ("Remote failure reply: %s", buf
);
3243 case 'T': /* Status with PC, SP, FP, ... */
3246 char* regs
= (char*) alloca (MAX_REGISTER_RAW_SIZE
);
3248 /* Expedited reply, containing Signal, {regno, reg} repeat */
3249 /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where
3251 n... = register number
3252 r... = register contents
3254 p
= &buf
[3]; /* after Txx */
3262 /* Read the register number */
3263 long pnum
= strtol ((const char *) p
, &p_temp
, 16);
3264 p1
= (unsigned char *) p_temp
;
3266 if (p1
== p
) /* No register number present here */
3268 p1
= (unsigned char *) strchr ((const char *) p
, ':');
3270 warning ("Malformed packet(a) (missing colon): %s\n\
3273 if (strncmp ((const char *) p
, "thread", p1
- p
) == 0)
3275 p_temp
= unpack_varlen_hex (++p1
, &thread_num
);
3276 record_currthread (thread_num
);
3277 p
= (unsigned char *) p_temp
;
3282 struct packet_reg
*reg
= packet_reg_from_pnum (rs
, pnum
);
3285 warning ("Malformed packet(b) (missing colon): %s\n\
3290 warning ("Remote sent bad register number %ld: %s\n\
3294 fieldsize
= hex2bin (p
, regs
, REGISTER_RAW_SIZE (reg
->regnum
));
3296 if (fieldsize
< REGISTER_RAW_SIZE (reg
->regnum
))
3297 warning ("Remote reply is too short: %s", buf
);
3298 supply_register (reg
->regnum
, regs
);
3303 warning ("Remote register badly formatted: %s", buf
);
3304 warning (" here: %s", p
);
3309 case 'S': /* Old style status, just signal only */
3310 status
->kind
= TARGET_WAITKIND_STOPPED
;
3311 status
->value
.sig
= (enum target_signal
)
3312 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
3316 /* Export Cisco kernel mode as a convenience variable
3317 (so that it can be used in the GDB prompt if desired). */
3319 if (cisco_kernel_mode
== 1)
3320 set_internalvar (lookup_internalvar ("cisco_kernel_mode"),
3321 value_from_string ("PDEBUG-"));
3322 cisco_kernel_mode
= 0;
3323 thread_num
= strtol ((const char *) &buf
[4], NULL
, 16);
3324 record_currthread (thread_num
);
3326 else if (buf
[3] == 'k')
3328 /* Export Cisco kernel mode as a convenience variable
3329 (so that it can be used in the GDB prompt if desired). */
3331 if (cisco_kernel_mode
== 1)
3332 set_internalvar (lookup_internalvar ("cisco_kernel_mode"),
3333 value_from_string ("KDEBUG-"));
3334 cisco_kernel_mode
= 1;
3337 case 'N': /* Cisco special: status and offsets */
3339 bfd_vma text_addr
, data_addr
, bss_addr
;
3340 bfd_signed_vma text_off
, data_off
, bss_off
;
3343 status
->kind
= TARGET_WAITKIND_STOPPED
;
3344 status
->value
.sig
= (enum target_signal
)
3345 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
3347 if (symfile_objfile
== NULL
)
3349 warning ("Relocation packet recieved with no symbol file. \
3354 /* Relocate object file. Buffer format is NAATT;DD;BB
3355 * where AA is the signal number, TT is the new text
3356 * address, DD * is the new data address, and BB is the
3357 * new bss address. */
3360 text_addr
= strtoul (p
, (char **) &p1
, 16);
3361 if (p1
== p
|| *p1
!= ';')
3362 warning ("Malformed relocation packet: Packet '%s'", buf
);
3364 data_addr
= strtoul (p
, (char **) &p1
, 16);
3365 if (p1
== p
|| *p1
!= ';')
3366 warning ("Malformed relocation packet: Packet '%s'", buf
);
3368 bss_addr
= strtoul (p
, (char **) &p1
, 16);
3370 warning ("Malformed relocation packet: Packet '%s'", buf
);
3372 if (remote_cisco_section_offsets (text_addr
, data_addr
, bss_addr
,
3373 &text_off
, &data_off
, &bss_off
)
3375 if (text_off
!= 0 || data_off
!= 0 || bss_off
!= 0)
3376 remote_cisco_objfile_relocate (text_off
, data_off
, bss_off
);
3380 case 'W': /* Target exited */
3382 /* The remote process exited. */
3383 status
->kind
= TARGET_WAITKIND_EXITED
;
3384 status
->value
.integer
= (fromhex (buf
[1]) << 4) + fromhex (buf
[2]);
3388 status
->kind
= TARGET_WAITKIND_SIGNALLED
;
3389 status
->value
.sig
= (enum target_signal
)
3390 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
3394 case 'O': /* Console output */
3395 remote_console_output (buf
+ 1);
3396 /* Return immediately to the event loop. The event loop will
3397 still be waiting on the inferior afterwards. */
3398 status
->kind
= TARGET_WAITKIND_IGNORE
;
3401 if (last_sent_signal
!= TARGET_SIGNAL_0
)
3403 /* Zero length reply means that we tried 'S' or 'C' and
3404 the remote system doesn't support it. */
3405 target_terminal_ours_for_output ();
3407 ("Can't send signals to this remote system. %s not sent.\n",
3408 target_signal_to_name (last_sent_signal
));
3409 last_sent_signal
= TARGET_SIGNAL_0
;
3410 target_terminal_inferior ();
3412 strcpy ((char *) buf
, last_sent_step
? "s" : "c");
3413 putpkt ((char *) buf
);
3416 /* else fallthrough */
3418 warning ("Invalid remote reply: %s", buf
);
3423 if (thread_num
!= -1)
3425 return pid_to_ptid (thread_num
);
3427 return inferior_ptid
;
3430 /* Number of bytes of registers this stub implements. */
3432 static int register_bytes_found
;
3434 /* Read the remote registers into the block REGS. */
3435 /* Currently we just read all the registers, so we don't use regnum. */
3439 remote_fetch_registers (int regnum
)
3441 struct remote_state
*rs
= get_remote_state ();
3442 char *buf
= alloca (rs
->remote_packet_size
);
3445 char *regs
= alloca (rs
->sizeof_g_packet
);
3447 set_thread (PIDGET (inferior_ptid
), 1);
3451 struct packet_reg
*reg
= packet_reg_from_regnum (rs
, regnum
);
3452 gdb_assert (reg
!= NULL
);
3453 if (!reg
->in_g_packet
)
3454 internal_error (__FILE__
, __LINE__
,
3455 "Attempt to fetch a non G-packet register when this "
3456 "remote.c does not support the p-packet.");
3460 remote_send (buf
, (rs
->remote_packet_size
));
3462 /* Save the size of the packet sent to us by the target. Its used
3463 as a heuristic when determining the max size of packets that the
3464 target can safely receive. */
3465 if ((rs
->actual_register_packet_size
) == 0)
3466 (rs
->actual_register_packet_size
) = strlen (buf
);
3468 /* Unimplemented registers read as all bits zero. */
3469 memset (regs
, 0, rs
->sizeof_g_packet
);
3471 /* We can get out of synch in various cases. If the first character
3472 in the buffer is not a hex character, assume that has happened
3473 and try to fetch another packet to read. */
3474 while ((buf
[0] < '0' || buf
[0] > '9')
3475 && (buf
[0] < 'a' || buf
[0] > 'f')
3476 && buf
[0] != 'x') /* New: unavailable register value */
3479 fprintf_unfiltered (gdb_stdlog
,
3480 "Bad register packet; fetching a new packet\n");
3481 getpkt (buf
, (rs
->remote_packet_size
), 0);
3484 /* Reply describes registers byte by byte, each byte encoded as two
3485 hex characters. Suck them all up, then supply them to the
3486 register cacheing/storage mechanism. */
3489 for (i
= 0; i
< rs
->sizeof_g_packet
; i
++)
3495 warning ("Remote reply is of odd length: %s", buf
);
3496 /* Don't change register_bytes_found in this case, and don't
3497 print a second warning. */
3500 if (p
[0] == 'x' && p
[1] == 'x')
3501 regs
[i
] = 0; /* 'x' */
3503 regs
[i
] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
3507 if (i
!= register_bytes_found
)
3509 register_bytes_found
= i
;
3510 if (REGISTER_BYTES_OK_P ()
3511 && !REGISTER_BYTES_OK (i
))
3512 warning ("Remote reply is too short: %s", buf
);
3518 for (i
= 0; i
< NUM_REGS
+ NUM_PSEUDO_REGS
; i
++)
3520 struct packet_reg
*r
= &rs
->regs
[i
];
3523 supply_register (r
->regnum
, regs
+ r
->offset
);
3524 if (buf
[r
->offset
* 2] == 'x')
3525 set_register_cached (i
, -1);
3531 /* Prepare to store registers. Since we may send them all (using a
3532 'G' request), we have to read out the ones we don't want to change
3536 remote_prepare_to_store (void)
3538 /* Make sure the entire registers array is valid. */
3539 switch (remote_protocol_P
.support
)
3541 case PACKET_DISABLE
:
3542 case PACKET_SUPPORT_UNKNOWN
:
3543 /* NOTE: This isn't rs->sizeof_g_packet because here, we are
3544 forcing the register cache to read its and not the target
3546 read_register_bytes (0, (char *) NULL
, REGISTER_BYTES
); /* OK use. */
3553 /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF
3554 packet was not recognized. */
3557 store_register_using_P (int regnum
)
3559 struct remote_state
*rs
= get_remote_state ();
3560 struct packet_reg
*reg
= packet_reg_from_regnum (rs
, regnum
);
3561 /* Try storing a single register. */
3562 char *buf
= alloca (rs
->remote_packet_size
);
3563 char *regp
= alloca (MAX_REGISTER_RAW_SIZE
);
3567 sprintf (buf
, "P%s=", phex_nz (reg
->pnum
, 0));
3568 p
= buf
+ strlen (buf
);
3569 regcache_collect (reg
->regnum
, regp
);
3570 bin2hex (regp
, p
, REGISTER_RAW_SIZE (reg
->regnum
));
3571 remote_send (buf
, rs
->remote_packet_size
);
3573 return buf
[0] != '\0';
3577 /* Store register REGNUM, or all registers if REGNUM == -1, from the contents
3578 of the register cache buffer. FIXME: ignores errors. */
3581 remote_store_registers (int regnum
)
3583 struct remote_state
*rs
= get_remote_state ();
3589 set_thread (PIDGET (inferior_ptid
), 1);
3593 switch (remote_protocol_P
.support
)
3595 case PACKET_DISABLE
:
3598 if (store_register_using_P (regnum
))
3601 error ("Protocol error: P packet not recognized by stub");
3602 case PACKET_SUPPORT_UNKNOWN
:
3603 if (store_register_using_P (regnum
))
3605 /* The stub recognized the 'P' packet. Remember this. */
3606 remote_protocol_P
.support
= PACKET_ENABLE
;
3611 /* The stub does not support the 'P' packet. Use 'G'
3612 instead, and don't try using 'P' in the future (it
3613 will just waste our time). */
3614 remote_protocol_P
.support
= PACKET_DISABLE
;
3620 /* Extract all the registers in the regcache copying them into a
3624 regs
= alloca (rs
->sizeof_g_packet
);
3625 memset (regs
, rs
->sizeof_g_packet
, 0);
3626 for (i
= 0; i
< NUM_REGS
+ NUM_PSEUDO_REGS
; i
++)
3628 struct packet_reg
*r
= &rs
->regs
[i
];
3630 regcache_collect (r
->regnum
, regs
+ r
->offset
);
3634 /* Command describes registers byte by byte,
3635 each byte encoded as two hex characters. */
3636 buf
= alloca (rs
->remote_packet_size
);
3639 /* remote_prepare_to_store insures that register_bytes_found gets set. */
3640 bin2hex (regs
, p
, register_bytes_found
);
3641 remote_send (buf
, (rs
->remote_packet_size
));
3645 /* Return the number of hex digits in num. */
3648 hexnumlen (ULONGEST num
)
3652 for (i
= 0; num
!= 0; i
++)
3658 /* Set BUF to the minimum number of hex digits representing NUM. */
3661 hexnumstr (char *buf
, ULONGEST num
)
3663 int len
= hexnumlen (num
);
3664 return hexnumnstr (buf
, num
, len
);
3668 /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */
3671 hexnumnstr (char *buf
, ULONGEST num
, int width
)
3677 for (i
= width
- 1; i
>= 0; i
--)
3679 buf
[i
] = "0123456789abcdef"[(num
& 0xf)];
3686 /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */
3689 remote_address_masked (CORE_ADDR addr
)
3691 if (remote_address_size
> 0
3692 && remote_address_size
< (sizeof (ULONGEST
) * 8))
3694 /* Only create a mask when that mask can safely be constructed
3695 in a ULONGEST variable. */
3697 mask
= (mask
<< remote_address_size
) - 1;
3703 /* Determine whether the remote target supports binary downloading.
3704 This is accomplished by sending a no-op memory write of zero length
3705 to the target at the specified address. It does not suffice to send
3706 the whole packet, since many stubs strip the eighth bit and subsequently
3707 compute a wrong checksum, which causes real havoc with remote_write_bytes.
3709 NOTE: This can still lose if the serial line is not eight-bit
3710 clean. In cases like this, the user should clear "remote
3714 check_binary_download (CORE_ADDR addr
)
3716 struct remote_state
*rs
= get_remote_state ();
3717 switch (remote_protocol_binary_download
.support
)
3719 case PACKET_DISABLE
:
3723 case PACKET_SUPPORT_UNKNOWN
:
3725 char *buf
= alloca (rs
->remote_packet_size
);
3730 p
+= hexnumstr (p
, (ULONGEST
) addr
);
3732 p
+= hexnumstr (p
, (ULONGEST
) 0);
3736 putpkt_binary (buf
, (int) (p
- buf
));
3737 getpkt (buf
, (rs
->remote_packet_size
), 0);
3742 fprintf_unfiltered (gdb_stdlog
,
3743 "binary downloading NOT suppported by target\n");
3744 remote_protocol_binary_download
.support
= PACKET_DISABLE
;
3749 fprintf_unfiltered (gdb_stdlog
,
3750 "binary downloading suppported by target\n");
3751 remote_protocol_binary_download
.support
= PACKET_ENABLE
;
3758 /* Write memory data directly to the remote machine.
3759 This does not inform the data cache; the data cache uses this.
3760 MEMADDR is the address in the remote memory space.
3761 MYADDR is the address of the buffer in our space.
3762 LEN is the number of bytes.
3764 Returns number of bytes transferred, or 0 (setting errno) for
3765 error. Only transfer a single packet. */
3768 remote_write_bytes (CORE_ADDR memaddr
, char *myaddr
, int len
)
3771 int max_buf_size
; /* Max size of packet output buffer */
3773 unsigned char *plen
;
3779 /* Verify that the target can support a binary download */
3780 check_binary_download (memaddr
);
3782 /* Determine the max packet size. */
3783 max_buf_size
= get_memory_write_packet_size ();
3784 sizeof_buf
= max_buf_size
+ 1; /* Space for trailing NUL */
3785 buf
= alloca (sizeof_buf
);
3787 /* Subtract header overhead from max payload size - $M<memaddr>,<len>:#nn */
3788 max_buf_size
-= 2 + hexnumlen (memaddr
+ len
- 1) + 1 + hexnumlen (len
) + 4;
3790 /* construct "M"<memaddr>","<len>":" */
3791 /* sprintf (buf, "M%lx,%x:", (unsigned long) memaddr, todo); */
3794 /* Append [XM]. Compute a best guess of the number of bytes
3795 actually transfered. */
3796 switch (remote_protocol_binary_download
.support
)
3800 /* Best guess at number of bytes that will fit. */
3801 todo
= min (len
, max_buf_size
);
3803 case PACKET_DISABLE
:
3805 /* num bytes that will fit */
3806 todo
= min (len
, max_buf_size
/ 2);
3808 case PACKET_SUPPORT_UNKNOWN
:
3809 internal_error (__FILE__
, __LINE__
,
3810 "remote_write_bytes: bad internal state");
3812 internal_error (__FILE__
, __LINE__
, "bad switch");
3815 /* Append <memaddr> */
3816 memaddr
= remote_address_masked (memaddr
);
3817 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
3820 /* Append <len>. Retain the location/size of <len>. It may
3821 need to be adjusted once the packet body has been created. */
3823 plenlen
= hexnumstr (p
, (ULONGEST
) todo
);
3828 /* Append the packet body. */
3829 switch (remote_protocol_binary_download
.support
)
3832 /* Binary mode. Send target system values byte by byte, in
3833 increasing byte addresses. Only escape certain critical
3836 (nr_bytes
< todo
) && (p
- buf
) < (max_buf_size
- 2);
3839 switch (myaddr
[nr_bytes
] & 0xff)
3844 /* These must be escaped */
3846 *p
++ = (myaddr
[nr_bytes
] & 0xff) ^ 0x20;
3849 *p
++ = myaddr
[nr_bytes
] & 0xff;
3853 if (nr_bytes
< todo
)
3855 /* Escape chars have filled up the buffer prematurely,
3856 and we have actually sent fewer bytes than planned.
3857 Fix-up the length field of the packet. Use the same
3858 number of characters as before. */
3860 plen
+= hexnumnstr (plen
, (ULONGEST
) nr_bytes
, plenlen
);
3861 *plen
= ':'; /* overwrite \0 from hexnumnstr() */
3864 case PACKET_DISABLE
:
3865 /* Normal mode: Send target system values byte by byte, in
3866 increasing byte addresses. Each byte is encoded as a two hex
3868 nr_bytes
= bin2hex (myaddr
, p
, todo
);
3871 case PACKET_SUPPORT_UNKNOWN
:
3872 internal_error (__FILE__
, __LINE__
,
3873 "remote_write_bytes: bad internal state");
3875 internal_error (__FILE__
, __LINE__
, "bad switch");
3878 putpkt_binary (buf
, (int) (p
- buf
));
3879 getpkt (buf
, sizeof_buf
, 0);
3883 /* There is no correspondance between what the remote protocol
3884 uses for errors and errno codes. We would like a cleaner way
3885 of representing errors (big enough to include errno codes,
3886 bfd_error codes, and others). But for now just return EIO. */
3891 /* Return NR_BYTES, not TODO, in case escape chars caused us to send fewer
3892 bytes than we'd planned. */
3896 /* Read memory data directly from the remote machine.
3897 This does not use the data cache; the data cache uses this.
3898 MEMADDR is the address in the remote memory space.
3899 MYADDR is the address of the buffer in our space.
3900 LEN is the number of bytes.
3902 Returns number of bytes transferred, or 0 for error. */
3904 /* NOTE: cagney/1999-10-18: This function (and its siblings in other
3905 remote targets) shouldn't attempt to read the entire buffer.
3906 Instead it should read a single packet worth of data and then
3907 return the byte size of that packet to the caller. The caller (its
3908 caller and its callers caller ;-) already contains code for
3909 handling partial reads. */
3912 remote_read_bytes (CORE_ADDR memaddr
, char *myaddr
, int len
)
3915 int max_buf_size
; /* Max size of packet output buffer */
3919 /* Create a buffer big enough for this packet. */
3920 max_buf_size
= get_memory_read_packet_size ();
3921 sizeof_buf
= max_buf_size
+ 1; /* Space for trailing NUL */
3922 buf
= alloca (sizeof_buf
);
3931 todo
= min (len
, max_buf_size
/ 2); /* num bytes that will fit */
3933 /* construct "m"<memaddr>","<len>" */
3934 /* sprintf (buf, "m%lx,%x", (unsigned long) memaddr, todo); */
3935 memaddr
= remote_address_masked (memaddr
);
3938 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
3940 p
+= hexnumstr (p
, (ULONGEST
) todo
);
3944 getpkt (buf
, sizeof_buf
, 0);
3948 /* There is no correspondance between what the remote protocol uses
3949 for errors and errno codes. We would like a cleaner way of
3950 representing errors (big enough to include errno codes, bfd_error
3951 codes, and others). But for now just return EIO. */
3956 /* Reply describes memory byte by byte,
3957 each byte encoded as two hex characters. */
3960 if ((i
= hex2bin (p
, myaddr
, todo
)) < todo
)
3962 /* Reply is short. This means that we were able to read
3963 only part of what we wanted to. */
3964 return i
+ (origlen
- len
);
3973 /* Read or write LEN bytes from inferior memory at MEMADDR,
3974 transferring to or from debugger address BUFFER. Write to inferior if
3975 SHOULD_WRITE is nonzero. Returns length of data written or read; 0
3976 for error. TARGET is unused. */
3980 remote_xfer_memory (CORE_ADDR mem_addr
, char *buffer
, int mem_len
,
3981 int should_write
, struct mem_attrib
*attrib
,
3982 struct target_ops
*target
)
3984 CORE_ADDR targ_addr
;
3988 REMOTE_TRANSLATE_XFER_ADDRESS (mem_addr
, mem_len
, &targ_addr
, &targ_len
);
3993 res
= remote_write_bytes (targ_addr
, buffer
, targ_len
);
3995 res
= remote_read_bytes (targ_addr
, buffer
, targ_len
);
4002 /* Enable after 4.12. */
4005 remote_search (int len
, char *data
, char *mask
, CORE_ADDR startaddr
,
4006 int increment
, CORE_ADDR lorange
, CORE_ADDR hirange
,
4007 CORE_ADDR
*addr_found
, char *data_found
)
4009 if (increment
== -4 && len
== 4)
4011 long mask_long
, data_long
;
4012 long data_found_long
;
4013 CORE_ADDR addr_we_found
;
4014 char *buf
= alloca (rs
->remote_packet_size
);
4015 long returned_long
[2];
4018 mask_long
= extract_unsigned_integer (mask
, len
);
4019 data_long
= extract_unsigned_integer (data
, len
);
4020 sprintf (buf
, "t%x:%x,%x", startaddr
, data_long
, mask_long
);
4022 getpkt (buf
, (rs
->remote_packet_size
), 0);
4025 /* The stub doesn't support the 't' request. We might want to
4026 remember this fact, but on the other hand the stub could be
4027 switched on us. Maybe we should remember it only until
4028 the next "target remote". */
4029 generic_search (len
, data
, mask
, startaddr
, increment
, lorange
,
4030 hirange
, addr_found
, data_found
);
4035 /* There is no correspondance between what the remote protocol uses
4036 for errors and errno codes. We would like a cleaner way of
4037 representing errors (big enough to include errno codes, bfd_error
4038 codes, and others). But for now just use EIO. */
4039 memory_error (EIO
, startaddr
);
4042 while (*p
!= '\0' && *p
!= ',')
4043 addr_we_found
= (addr_we_found
<< 4) + fromhex (*p
++);
4045 error ("Protocol error: short return for search");
4047 data_found_long
= 0;
4048 while (*p
!= '\0' && *p
!= ',')
4049 data_found_long
= (data_found_long
<< 4) + fromhex (*p
++);
4050 /* Ignore anything after this comma, for future extensions. */
4052 if (addr_we_found
< lorange
|| addr_we_found
>= hirange
)
4058 *addr_found
= addr_we_found
;
4059 *data_found
= store_unsigned_integer (data_we_found
, len
);
4062 generic_search (len
, data
, mask
, startaddr
, increment
, lorange
,
4063 hirange
, addr_found
, data_found
);
4068 remote_files_info (struct target_ops
*ignore
)
4070 puts_filtered ("Debugging a target over a serial line.\n");
4073 /* Stuff for dealing with the packets which are part of this protocol.
4074 See comment at top of file for details. */
4076 /* Read a single character from the remote end, masking it down to 7 bits. */
4079 readchar (int timeout
)
4083 ch
= serial_readchar (remote_desc
, timeout
);
4088 switch ((enum serial_rc
) ch
)
4091 target_mourn_inferior ();
4092 error ("Remote connection closed");
4095 perror_with_name ("Remote communication error");
4097 case SERIAL_TIMEOUT
:
4103 /* Send the command in BUF to the remote machine, and read the reply
4104 into BUF. Report an error if we get an error reply. */
4107 remote_send (char *buf
,
4111 getpkt (buf
, sizeof_buf
, 0);
4114 error ("Remote failure reply: %s", buf
);
4117 /* Display a null-terminated packet on stdout, for debugging, using C
4121 print_packet (char *buf
)
4123 puts_filtered ("\"");
4124 fputstr_filtered (buf
, '"', gdb_stdout
);
4125 puts_filtered ("\"");
4131 return putpkt_binary (buf
, strlen (buf
));
4134 /* Send a packet to the remote machine, with error checking. The data
4135 of the packet is in BUF. The string in BUF can be at most (rs->remote_packet_size) - 5
4136 to account for the $, # and checksum, and for a possible /0 if we are
4137 debugging (remote_debug) and want to print the sent packet as a string */
4140 putpkt_binary (char *buf
, int cnt
)
4142 struct remote_state
*rs
= get_remote_state ();
4144 unsigned char csum
= 0;
4145 char *buf2
= alloca (cnt
+ 6);
4146 long sizeof_junkbuf
= (rs
->remote_packet_size
);
4147 char *junkbuf
= alloca (sizeof_junkbuf
);
4153 /* Copy the packet into buffer BUF2, encapsulating it
4154 and giving it a checksum. */
4159 for (i
= 0; i
< cnt
; i
++)
4165 *p
++ = tohex ((csum
>> 4) & 0xf);
4166 *p
++ = tohex (csum
& 0xf);
4168 /* Send it over and over until we get a positive ack. */
4172 int started_error_output
= 0;
4177 fprintf_unfiltered (gdb_stdlog
, "Sending packet: ");
4178 fputstrn_unfiltered (buf2
, p
- buf2
, 0, gdb_stdlog
);
4179 fprintf_unfiltered (gdb_stdlog
, "...");
4180 gdb_flush (gdb_stdlog
);
4182 if (serial_write (remote_desc
, buf2
, p
- buf2
))
4183 perror_with_name ("putpkt: write failed");
4185 /* read until either a timeout occurs (-2) or '+' is read */
4188 ch
= readchar (remote_timeout
);
4196 case SERIAL_TIMEOUT
:
4198 if (started_error_output
)
4200 putchar_unfiltered ('\n');
4201 started_error_output
= 0;
4210 fprintf_unfiltered (gdb_stdlog
, "Ack\n");
4214 fprintf_unfiltered (gdb_stdlog
, "Nak\n");
4215 case SERIAL_TIMEOUT
:
4219 break; /* Retransmit buffer */
4223 fprintf_unfiltered (gdb_stdlog
, "Packet instead of Ack, ignoring it\n");
4224 /* It's probably an old response, and we're out of sync.
4225 Just gobble up the packet and ignore it. */
4226 read_frame (junkbuf
, sizeof_junkbuf
);
4227 continue; /* Now, go look for + */
4232 if (!started_error_output
)
4234 started_error_output
= 1;
4235 fprintf_unfiltered (gdb_stdlog
, "putpkt: Junk: ");
4237 fputc_unfiltered (ch
& 0177, gdb_stdlog
);
4241 break; /* Here to retransmit */
4245 /* This is wrong. If doing a long backtrace, the user should be
4246 able to get out next time we call QUIT, without anything as
4247 violent as interrupt_query. If we want to provide a way out of
4248 here without getting to the next QUIT, it should be based on
4249 hitting ^C twice as in remote_wait. */
4259 static int remote_cisco_mode
;
4261 /* Come here after finding the start of the frame. Collect the rest
4262 into BUF, verifying the checksum, length, and handling run-length
4263 compression. No more than sizeof_buf-1 characters are read so that
4264 the buffer can be NUL terminated.
4266 Returns -1 on error, number of characters in buffer (ignoring the
4267 trailing NULL) on success. (could be extended to return one of the
4268 SERIAL status indications). */
4271 read_frame (char *buf
,
4283 /* ASSERT (bc < sizeof_buf - 1) - space for trailing NUL */
4284 c
= readchar (remote_timeout
);
4287 case SERIAL_TIMEOUT
:
4289 fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog
);
4293 fputs_filtered ("Saw new packet start in middle of old one\n",
4295 return -1; /* Start a new packet, count retries */
4298 unsigned char pktcsum
;
4304 check_0
= readchar (remote_timeout
);
4306 check_1
= readchar (remote_timeout
);
4308 if (check_0
== SERIAL_TIMEOUT
|| check_1
== SERIAL_TIMEOUT
)
4311 fputs_filtered ("Timeout in checksum, retrying\n", gdb_stdlog
);
4314 else if (check_0
< 0 || check_1
< 0)
4317 fputs_filtered ("Communication error in checksum\n", gdb_stdlog
);
4321 pktcsum
= (fromhex (check_0
) << 4) | fromhex (check_1
);
4322 if (csum
== pktcsum
)
4327 fprintf_filtered (gdb_stdlog
,
4328 "Bad checksum, sentsum=0x%x, csum=0x%x, buf=",
4330 fputs_filtered (buf
, gdb_stdlog
);
4331 fputs_filtered ("\n", gdb_stdlog
);
4333 /* Number of characters in buffer ignoring trailing
4337 case '*': /* Run length encoding */
4342 if (remote_cisco_mode
== 0)
4344 c
= readchar (remote_timeout
);
4346 repeat
= c
- ' ' + 3; /* Compute repeat count */
4350 /* Cisco's run-length encoding variant uses two
4351 hex chars to represent the repeat count. */
4353 c
= readchar (remote_timeout
);
4355 repeat
= fromhex (c
) << 4;
4356 c
= readchar (remote_timeout
);
4358 repeat
+= fromhex (c
);
4361 /* The character before ``*'' is repeated. */
4363 if (repeat
> 0 && repeat
<= 255
4365 && bc
+ repeat
- 1 < sizeof_buf
- 1)
4367 memset (&buf
[bc
], buf
[bc
- 1], repeat
);
4373 printf_filtered ("Repeat count %d too large for buffer: ", repeat
);
4374 puts_filtered (buf
);
4375 puts_filtered ("\n");
4379 if (bc
< sizeof_buf
- 1)
4387 puts_filtered ("Remote packet too long: ");
4388 puts_filtered (buf
);
4389 puts_filtered ("\n");
4396 /* Read a packet from the remote machine, with error checking, and
4397 store it in BUF. If FOREVER, wait forever rather than timing out;
4398 this is used (in synchronous mode) to wait for a target that is is
4399 executing user code to stop. */
4400 /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we
4401 don't have to change all the calls to getpkt to deal with the
4402 return value, because at the moment I don't know what the right
4403 thing to do it for those. */
4411 timed_out
= getpkt_sane (buf
, sizeof_buf
, forever
);
4415 /* Read a packet from the remote machine, with error checking, and
4416 store it in BUF. If FOREVER, wait forever rather than timing out;
4417 this is used (in synchronous mode) to wait for a target that is is
4418 executing user code to stop. If FOREVER == 0, this function is
4419 allowed to time out gracefully and return an indication of this to
4422 getpkt_sane (char *buf
,
4431 strcpy (buf
, "timeout");
4435 timeout
= watchdog
> 0 ? watchdog
: -1;
4439 timeout
= remote_timeout
;
4443 for (tries
= 1; tries
<= MAX_TRIES
; tries
++)
4445 /* This can loop forever if the remote side sends us characters
4446 continuously, but if it pauses, we'll get a zero from readchar
4447 because of timeout. Then we'll count that as a retry. */
4449 /* Note that we will only wait forever prior to the start of a packet.
4450 After that, we expect characters to arrive at a brisk pace. They
4451 should show up within remote_timeout intervals. */
4455 c
= readchar (timeout
);
4457 if (c
== SERIAL_TIMEOUT
)
4459 if (forever
) /* Watchdog went off? Kill the target. */
4462 target_mourn_inferior ();
4463 error ("Watchdog has expired. Target detached.\n");
4466 fputs_filtered ("Timed out.\n", gdb_stdlog
);
4472 /* We've found the start of a packet, now collect the data. */
4474 val
= read_frame (buf
, sizeof_buf
);
4480 fprintf_unfiltered (gdb_stdlog
, "Packet received: ");
4481 fputstr_unfiltered (buf
, 0, gdb_stdlog
);
4482 fprintf_unfiltered (gdb_stdlog
, "\n");
4484 serial_write (remote_desc
, "+", 1);
4488 /* Try the whole thing again. */
4490 serial_write (remote_desc
, "-", 1);
4493 /* We have tried hard enough, and just can't receive the packet. Give up. */
4495 printf_unfiltered ("Ignoring packet error, continuing...\n");
4496 serial_write (remote_desc
, "+", 1);
4503 /* For some mysterious reason, wait_for_inferior calls kill instead of
4504 mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */
4508 target_mourn_inferior ();
4512 /* Use catch_errors so the user can quit from gdb even when we aren't on
4513 speaking terms with the remote system. */
4514 catch_errors ((catch_errors_ftype
*) putpkt
, "k", "", RETURN_MASK_ERROR
);
4516 /* Don't wait for it to die. I'm not really sure it matters whether
4517 we do or not. For the existing stubs, kill is a noop. */
4518 target_mourn_inferior ();
4521 /* Async version of remote_kill. */
4523 remote_async_kill (void)
4525 /* Unregister the file descriptor from the event loop. */
4526 if (target_is_async_p ())
4527 serial_async (remote_desc
, NULL
, 0);
4529 /* For some mysterious reason, wait_for_inferior calls kill instead of
4530 mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */
4534 target_mourn_inferior ();
4538 /* Use catch_errors so the user can quit from gdb even when we aren't on
4539 speaking terms with the remote system. */
4540 catch_errors ((catch_errors_ftype
*) putpkt
, "k", "", RETURN_MASK_ERROR
);
4542 /* Don't wait for it to die. I'm not really sure it matters whether
4543 we do or not. For the existing stubs, kill is a noop. */
4544 target_mourn_inferior ();
4550 remote_mourn_1 (&remote_ops
);
4554 remote_async_mourn (void)
4556 remote_mourn_1 (&remote_async_ops
);
4560 extended_remote_mourn (void)
4562 /* We do _not_ want to mourn the target like this; this will
4563 remove the extended remote target from the target stack,
4564 and the next time the user says "run" it'll fail.
4566 FIXME: What is the right thing to do here? */
4568 remote_mourn_1 (&extended_remote_ops
);
4572 /* Worker function for remote_mourn. */
4574 remote_mourn_1 (struct target_ops
*target
)
4576 unpush_target (target
);
4577 generic_mourn_inferior ();
4580 /* In the extended protocol we want to be able to do things like
4581 "run" and have them basically work as expected. So we need
4582 a special create_inferior function.
4584 FIXME: One day add support for changing the exec file
4585 we're debugging, arguments and an environment. */
4588 extended_remote_create_inferior (char *exec_file
, char *args
, char **env
)
4590 /* Rip out the breakpoints; we'll reinsert them after restarting
4591 the remote server. */
4592 remove_breakpoints ();
4594 /* Now restart the remote server. */
4595 extended_remote_restart ();
4597 /* Now put the breakpoints back in. This way we're safe if the
4598 restart function works via a unix fork on the remote side. */
4599 insert_breakpoints ();
4601 /* Clean up from the last time we were running. */
4602 clear_proceed_status ();
4604 /* Let the remote process run. */
4605 proceed (-1, TARGET_SIGNAL_0
, 0);
4608 /* Async version of extended_remote_create_inferior. */
4610 extended_remote_async_create_inferior (char *exec_file
, char *args
, char **env
)
4612 /* Rip out the breakpoints; we'll reinsert them after restarting
4613 the remote server. */
4614 remove_breakpoints ();
4616 /* If running asynchronously, register the target file descriptor
4617 with the event loop. */
4618 if (event_loop_p
&& target_can_async_p ())
4619 target_async (inferior_event_handler
, 0);
4621 /* Now restart the remote server. */
4622 extended_remote_restart ();
4624 /* Now put the breakpoints back in. This way we're safe if the
4625 restart function works via a unix fork on the remote side. */
4626 insert_breakpoints ();
4628 /* Clean up from the last time we were running. */
4629 clear_proceed_status ();
4631 /* Let the remote process run. */
4632 proceed (-1, TARGET_SIGNAL_0
, 0);
4636 /* On some machines, e.g. 68k, we may use a different breakpoint instruction
4637 than other targets; in those use REMOTE_BREAKPOINT instead of just
4638 BREAKPOINT. Also, bi-endian targets may define LITTLE_REMOTE_BREAKPOINT
4639 and BIG_REMOTE_BREAKPOINT. If none of these are defined, we just call
4640 the standard routines that are in mem-break.c. */
4642 /* FIXME, these ought to be done in a more dynamic fashion. For instance,
4643 the choice of breakpoint instruction affects target program design and
4644 vice versa, and by making it user-tweakable, the special code here
4645 goes away and we need fewer special GDB configurations. */
4647 #if defined (LITTLE_REMOTE_BREAKPOINT) && defined (BIG_REMOTE_BREAKPOINT) && !defined(REMOTE_BREAKPOINT)
4648 #define REMOTE_BREAKPOINT
4651 #ifdef REMOTE_BREAKPOINT
4653 /* If the target isn't bi-endian, just pretend it is. */
4654 #if !defined (LITTLE_REMOTE_BREAKPOINT) && !defined (BIG_REMOTE_BREAKPOINT)
4655 #define LITTLE_REMOTE_BREAKPOINT REMOTE_BREAKPOINT
4656 #define BIG_REMOTE_BREAKPOINT REMOTE_BREAKPOINT
4659 static unsigned char big_break_insn
[] = BIG_REMOTE_BREAKPOINT
;
4660 static unsigned char little_break_insn
[] = LITTLE_REMOTE_BREAKPOINT
;
4662 #endif /* REMOTE_BREAKPOINT */
4664 /* Insert a breakpoint on targets that don't have any better breakpoint
4665 support. We read the contents of the target location and stash it,
4666 then overwrite it with a breakpoint instruction. ADDR is the target
4667 location in the target machine. CONTENTS_CACHE is a pointer to
4668 memory allocated for saving the target contents. It is guaranteed
4669 by the caller to be long enough to save sizeof BREAKPOINT bytes (this
4670 is accomplished via BREAKPOINT_MAX). */
4673 remote_insert_breakpoint (CORE_ADDR addr
, char *contents_cache
)
4675 struct remote_state
*rs
= get_remote_state ();
4676 #ifdef REMOTE_BREAKPOINT
4681 /* Try the "Z" s/w breakpoint packet if it is not already disabled.
4682 If it succeeds, then set the support to PACKET_ENABLE. If it
4683 fails, and the user has explicitly requested the Z support then
4684 report an error, otherwise, mark it disabled and go on. */
4686 if (remote_protocol_Z
[Z_PACKET_SOFTWARE_BP
].support
!= PACKET_DISABLE
)
4688 char *buf
= alloca (rs
->remote_packet_size
);
4691 addr
= remote_address_masked (addr
);
4695 p
+= hexnumstr (p
, (ULONGEST
) addr
);
4696 BREAKPOINT_FROM_PC (&addr
, &bp_size
);
4697 sprintf (p
, ",%d", bp_size
);
4700 getpkt (buf
, (rs
->remote_packet_size
), 0);
4702 switch (packet_ok (buf
, &remote_protocol_Z
[Z_PACKET_SOFTWARE_BP
]))
4708 case PACKET_UNKNOWN
:
4713 #ifdef REMOTE_BREAKPOINT
4714 val
= target_read_memory (addr
, contents_cache
, sizeof big_break_insn
);
4718 if (TARGET_BYTE_ORDER
== BFD_ENDIAN_BIG
)
4719 val
= target_write_memory (addr
, (char *) big_break_insn
,
4720 sizeof big_break_insn
);
4722 val
= target_write_memory (addr
, (char *) little_break_insn
,
4723 sizeof little_break_insn
);
4728 return memory_insert_breakpoint (addr
, contents_cache
);
4729 #endif /* REMOTE_BREAKPOINT */
4733 remote_remove_breakpoint (CORE_ADDR addr
, char *contents_cache
)
4735 struct remote_state
*rs
= get_remote_state ();
4738 if (remote_protocol_Z
[Z_PACKET_SOFTWARE_BP
].support
!= PACKET_DISABLE
)
4740 char *buf
= alloca (rs
->remote_packet_size
);
4747 addr
= remote_address_masked (addr
);
4748 p
+= hexnumstr (p
, (ULONGEST
) addr
);
4749 BREAKPOINT_FROM_PC (&addr
, &bp_size
);
4750 sprintf (p
, ",%d", bp_size
);
4753 getpkt (buf
, (rs
->remote_packet_size
), 0);
4755 return (buf
[0] == 'E');
4758 #ifdef REMOTE_BREAKPOINT
4759 return target_write_memory (addr
, contents_cache
, sizeof big_break_insn
);
4761 return memory_remove_breakpoint (addr
, contents_cache
);
4762 #endif /* REMOTE_BREAKPOINT */
4766 watchpoint_to_Z_packet (int type
)
4780 internal_error (__FILE__
, __LINE__
,
4781 "hw_bp_to_z: bad watchpoint type %d", type
);
4785 /* FIXME: This function should be static and a member of the remote
4789 remote_insert_watchpoint (CORE_ADDR addr
, int len
, int type
)
4791 struct remote_state
*rs
= get_remote_state ();
4792 char *buf
= alloca (rs
->remote_packet_size
);
4794 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
4796 if (remote_protocol_Z
[packet
].support
== PACKET_DISABLE
)
4797 error ("Can't set hardware watchpoints without the '%s' (%s) packet\n",
4798 remote_protocol_Z
[packet
].name
,
4799 remote_protocol_Z
[packet
].title
);
4801 sprintf (buf
, "Z%x,", packet
);
4802 p
= strchr (buf
, '\0');
4803 addr
= remote_address_masked (addr
);
4804 p
+= hexnumstr (p
, (ULONGEST
) addr
);
4805 sprintf (p
, ",%x", len
);
4808 getpkt (buf
, (rs
->remote_packet_size
), 0);
4810 switch (packet_ok (buf
, &remote_protocol_Z
[packet
]))
4813 case PACKET_UNKNOWN
:
4818 internal_error (__FILE__
, __LINE__
,
4819 "remote_insert_watchpoint: reached end of function");
4822 /* FIXME: This function should be static and a member of the remote
4826 remote_remove_watchpoint (CORE_ADDR addr
, int len
, int type
)
4828 struct remote_state
*rs
= get_remote_state ();
4829 char *buf
= alloca (rs
->remote_packet_size
);
4831 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
4833 if (remote_protocol_Z
[packet
].support
== PACKET_DISABLE
)
4834 error ("Can't clear hardware watchpoints without the '%s' (%s) packet\n",
4835 remote_protocol_Z
[packet
].name
,
4836 remote_protocol_Z
[packet
].title
);
4838 sprintf (buf
, "z%x,", packet
);
4839 p
= strchr (buf
, '\0');
4840 addr
= remote_address_masked (addr
);
4841 p
+= hexnumstr (p
, (ULONGEST
) addr
);
4842 sprintf (p
, ",%x", len
);
4844 getpkt (buf
, (rs
->remote_packet_size
), 0);
4846 switch (packet_ok (buf
, &remote_protocol_Z
[packet
]))
4849 case PACKET_UNKNOWN
:
4854 internal_error (__FILE__
, __LINE__
,
4855 "remote_remove_watchpoint: reached end of function");
4858 /* FIXME: This function should be static and a member of the remote
4862 remote_insert_hw_breakpoint (CORE_ADDR addr
, int len
)
4864 struct remote_state
*rs
= get_remote_state ();
4865 char *buf
= alloca (rs
->remote_packet_size
);
4868 if (remote_protocol_Z
[Z_PACKET_HARDWARE_BP
].support
== PACKET_DISABLE
)
4869 error ("Can't set hardware breakpoint without the '%s' (%s) packet\n",
4870 remote_protocol_Z
[Z_PACKET_HARDWARE_BP
].name
,
4871 remote_protocol_Z
[Z_PACKET_HARDWARE_BP
].title
);
4877 addr
= remote_address_masked (addr
);
4878 p
+= hexnumstr (p
, (ULONGEST
) addr
);
4879 sprintf (p
, ",%x", len
);
4882 getpkt (buf
, (rs
->remote_packet_size
), 0);
4884 switch (packet_ok (buf
, &remote_protocol_Z
[Z_PACKET_HARDWARE_BP
]))
4887 case PACKET_UNKNOWN
:
4892 internal_error (__FILE__
, __LINE__
,
4893 "remote_remove_watchpoint: reached end of function");
4896 /* FIXME: This function should be static and a member of the remote
4900 remote_remove_hw_breakpoint (CORE_ADDR addr
, int len
)
4902 struct remote_state
*rs
= get_remote_state ();
4903 char *buf
= alloca (rs
->remote_packet_size
);
4906 if (remote_protocol_Z
[Z_PACKET_HARDWARE_BP
].support
== PACKET_DISABLE
)
4907 error ("Can't clear hardware breakpoint without the '%s' (%s) packet\n",
4908 remote_protocol_Z
[Z_PACKET_HARDWARE_BP
].name
,
4909 remote_protocol_Z
[Z_PACKET_HARDWARE_BP
].title
);
4915 addr
= remote_address_masked (addr
);
4916 p
+= hexnumstr (p
, (ULONGEST
) addr
);
4917 sprintf (p
, ",%x", len
);
4920 getpkt (buf
, (rs
->remote_packet_size
), 0);
4922 switch (packet_ok (buf
, &remote_protocol_Z
[Z_PACKET_HARDWARE_BP
]))
4925 case PACKET_UNKNOWN
:
4930 internal_error (__FILE__
, __LINE__
,
4931 "remote_remove_watchpoint: reached end of function");
4934 /* Some targets are only capable of doing downloads, and afterwards
4935 they switch to the remote serial protocol. This function provides
4936 a clean way to get from the download target to the remote target.
4937 It's basically just a wrapper so that we don't have to expose any
4938 of the internal workings of remote.c.
4940 Prior to calling this routine, you should shutdown the current
4941 target code, else you will get the "A program is being debugged
4942 already..." message. Usually a call to pop_target() suffices. */
4945 push_remote_target (char *name
, int from_tty
)
4947 printf_filtered ("Switching to remote protocol\n");
4948 remote_open (name
, from_tty
);
4951 /* Other targets want to use the entire remote serial module but with
4952 certain remote_ops overridden. */
4955 open_remote_target (char *name
, int from_tty
, struct target_ops
*target
,
4958 printf_filtered ("Selecting the %sremote protocol\n",
4959 (extended_p
? "extended-" : ""));
4960 remote_open_1 (name
, from_tty
, target
, extended_p
);
4963 /* Table used by the crc32 function to calcuate the checksum. */
4965 static unsigned long crc32_table
[256] =
4968 static unsigned long
4969 crc32 (unsigned char *buf
, int len
, unsigned int crc
)
4971 if (!crc32_table
[1])
4973 /* Initialize the CRC table and the decoding table. */
4977 for (i
= 0; i
< 256; i
++)
4979 for (c
= i
<< 24, j
= 8; j
> 0; --j
)
4980 c
= c
& 0x80000000 ? (c
<< 1) ^ 0x04c11db7 : (c
<< 1);
4987 crc
= (crc
<< 8) ^ crc32_table
[((crc
>> 24) ^ *buf
) & 255];
4993 /* compare-sections command
4995 With no arguments, compares each loadable section in the exec bfd
4996 with the same memory range on the target, and reports mismatches.
4997 Useful for verifying the image on the target against the exec file.
4998 Depends on the target understanding the new "qCRC:" request. */
5000 /* FIXME: cagney/1999-10-26: This command should be broken down into a
5001 target method (target verify memory) and generic version of the
5002 actual command. This will allow other high-level code (especially
5003 generic_load()) to make use of this target functionality. */
5006 compare_sections_command (char *args
, int from_tty
)
5008 struct remote_state
*rs
= get_remote_state ();
5010 unsigned long host_crc
, target_crc
;
5011 extern bfd
*exec_bfd
;
5012 struct cleanup
*old_chain
;
5015 const char *sectname
;
5016 char *buf
= alloca (rs
->remote_packet_size
);
5023 error ("command cannot be used without an exec file");
5024 if (!current_target
.to_shortname
||
5025 strcmp (current_target
.to_shortname
, "remote") != 0)
5026 error ("command can only be used with remote target");
5028 for (s
= exec_bfd
->sections
; s
; s
= s
->next
)
5030 if (!(s
->flags
& SEC_LOAD
))
5031 continue; /* skip non-loadable section */
5033 size
= bfd_get_section_size_before_reloc (s
);
5035 continue; /* skip zero-length section */
5037 sectname
= bfd_get_section_name (exec_bfd
, s
);
5038 if (args
&& strcmp (args
, sectname
) != 0)
5039 continue; /* not the section selected by user */
5041 matched
= 1; /* do this section */
5043 /* FIXME: assumes lma can fit into long */
5044 sprintf (buf
, "qCRC:%lx,%lx", (long) lma
, (long) size
);
5047 /* be clever; compute the host_crc before waiting for target reply */
5048 sectdata
= xmalloc (size
);
5049 old_chain
= make_cleanup (xfree
, sectdata
);
5050 bfd_get_section_contents (exec_bfd
, s
, sectdata
, 0, size
);
5051 host_crc
= crc32 ((unsigned char *) sectdata
, size
, 0xffffffff);
5053 getpkt (buf
, (rs
->remote_packet_size
), 0);
5055 error ("target memory fault, section %s, range 0x%s -- 0x%s",
5056 sectname
, paddr (lma
), paddr (lma
+ size
));
5058 error ("remote target does not support this operation");
5060 for (target_crc
= 0, tmp
= &buf
[1]; *tmp
; tmp
++)
5061 target_crc
= target_crc
* 16 + fromhex (*tmp
);
5063 printf_filtered ("Section %s, range 0x%s -- 0x%s: ",
5064 sectname
, paddr (lma
), paddr (lma
+ size
));
5065 if (host_crc
== target_crc
)
5066 printf_filtered ("matched.\n");
5069 printf_filtered ("MIS-MATCHED!\n");
5073 do_cleanups (old_chain
);
5076 warning ("One or more sections of the remote executable does not match\n\
5077 the loaded file\n");
5078 if (args
&& !matched
)
5079 printf_filtered ("No loaded section named '%s'.\n", args
);
5083 remote_query (int query_type
, char *buf
, char *outbuf
, int *bufsiz
)
5085 struct remote_state
*rs
= get_remote_state ();
5087 char *buf2
= alloca (rs
->remote_packet_size
);
5088 char *p2
= &buf2
[0];
5091 error ("null pointer to remote bufer size specified");
5093 /* minimum outbuf size is (rs->remote_packet_size) - if bufsiz is not large enough let
5094 the caller know and return what the minimum size is */
5095 /* Note: a zero bufsiz can be used to query the minimum buffer size */
5096 if (*bufsiz
< (rs
->remote_packet_size
))
5098 *bufsiz
= (rs
->remote_packet_size
);
5102 /* except for querying the minimum buffer size, target must be open */
5104 error ("remote query is only available after target open");
5106 /* we only take uppercase letters as query types, at least for now */
5107 if ((query_type
< 'A') || (query_type
> 'Z'))
5108 error ("invalid remote query type");
5111 error ("null remote query specified");
5114 error ("remote query requires a buffer to receive data");
5121 /* we used one buffer char for the remote protocol q command and another
5122 for the query type. As the remote protocol encapsulation uses 4 chars
5123 plus one extra in case we are debugging (remote_debug),
5124 we have PBUFZIZ - 7 left to pack the query string */
5126 while (buf
[i
] && (i
< ((rs
->remote_packet_size
) - 8)))
5128 /* bad caller may have sent forbidden characters */
5129 if ((!isprint (buf
[i
])) || (buf
[i
] == '$') || (buf
[i
] == '#'))
5130 error ("illegal characters in query string");
5138 error ("query larger than available buffer");
5144 getpkt (outbuf
, *bufsiz
, 0);
5150 remote_rcmd (char *command
,
5151 struct ui_file
*outbuf
)
5153 struct remote_state
*rs
= get_remote_state ();
5155 char *buf
= alloca (rs
->remote_packet_size
);
5159 error ("remote rcmd is only available after target open");
5161 /* Send a NULL command across as an empty command */
5162 if (command
== NULL
)
5165 /* The query prefix */
5166 strcpy (buf
, "qRcmd,");
5167 p
= strchr (buf
, '\0');
5169 if ((strlen (buf
) + strlen (command
) * 2 + 8/*misc*/) > (rs
->remote_packet_size
))
5170 error ("\"monitor\" command ``%s'' is too long\n", command
);
5172 /* Encode the actual command */
5173 bin2hex (command
, p
, 0);
5175 if (putpkt (buf
) < 0)
5176 error ("Communication problem with target\n");
5178 /* get/display the response */
5181 /* XXX - see also tracepoint.c:remote_get_noisy_reply() */
5183 getpkt (buf
, (rs
->remote_packet_size
), 0);
5185 error ("Target does not support this command\n");
5186 if (buf
[0] == 'O' && buf
[1] != 'K')
5188 remote_console_output (buf
+ 1); /* 'O' message from stub */
5191 if (strcmp (buf
, "OK") == 0)
5193 if (strlen (buf
) == 3 && buf
[0] == 'E'
5194 && isdigit (buf
[1]) && isdigit (buf
[2]))
5196 error ("Protocol error with Rcmd");
5198 for (p
= buf
; p
[0] != '\0' && p
[1] != '\0'; p
+= 2)
5200 char c
= (fromhex (p
[0]) << 4) + fromhex (p
[1]);
5201 fputc_unfiltered (c
, outbuf
);
5208 packet_command (char *args
, int from_tty
)
5210 struct remote_state
*rs
= get_remote_state ();
5211 char *buf
= alloca (rs
->remote_packet_size
);
5214 error ("command can only be used with remote target");
5217 error ("remote-packet command requires packet text as argument");
5219 puts_filtered ("sending: ");
5220 print_packet (args
);
5221 puts_filtered ("\n");
5224 getpkt (buf
, (rs
->remote_packet_size
), 0);
5225 puts_filtered ("received: ");
5227 puts_filtered ("\n");
5231 /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------------- */
5233 static void display_thread_info (struct gdb_ext_thread_info
*info
);
5235 static void threadset_test_cmd (char *cmd
, int tty
);
5237 static void threadalive_test (char *cmd
, int tty
);
5239 static void threadlist_test_cmd (char *cmd
, int tty
);
5241 int get_and_display_threadinfo (threadref
* ref
);
5243 static void threadinfo_test_cmd (char *cmd
, int tty
);
5245 static int thread_display_step (threadref
* ref
, void *context
);
5247 static void threadlist_update_test_cmd (char *cmd
, int tty
);
5249 static void init_remote_threadtests (void);
5251 #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid */
5254 threadset_test_cmd (char *cmd
, int tty
)
5256 int sample_thread
= SAMPLE_THREAD
;
5258 printf_filtered ("Remote threadset test\n");
5259 set_thread (sample_thread
, 1);
5264 threadalive_test (char *cmd
, int tty
)
5266 int sample_thread
= SAMPLE_THREAD
;
5268 if (remote_thread_alive (pid_to_ptid (sample_thread
)))
5269 printf_filtered ("PASS: Thread alive test\n");
5271 printf_filtered ("FAIL: Thread alive test\n");
5274 void output_threadid (char *title
, threadref
* ref
);
5277 output_threadid (char *title
, threadref
*ref
)
5281 pack_threadid (&hexid
[0], ref
); /* Convert threead id into hex */
5283 printf_filtered ("%s %s\n", title
, (&hexid
[0]));
5287 threadlist_test_cmd (char *cmd
, int tty
)
5290 threadref nextthread
;
5291 int done
, result_count
;
5292 threadref threadlist
[3];
5294 printf_filtered ("Remote Threadlist test\n");
5295 if (!remote_get_threadlist (startflag
, &nextthread
, 3, &done
,
5296 &result_count
, &threadlist
[0]))
5297 printf_filtered ("FAIL: threadlist test\n");
5300 threadref
*scan
= threadlist
;
5301 threadref
*limit
= scan
+ result_count
;
5303 while (scan
< limit
)
5304 output_threadid (" thread ", scan
++);
5309 display_thread_info (struct gdb_ext_thread_info
*info
)
5311 output_threadid ("Threadid: ", &info
->threadid
);
5312 printf_filtered ("Name: %s\n ", info
->shortname
);
5313 printf_filtered ("State: %s\n", info
->display
);
5314 printf_filtered ("other: %s\n\n", info
->more_display
);
5318 get_and_display_threadinfo (threadref
*ref
)
5322 struct gdb_ext_thread_info threadinfo
;
5324 set
= TAG_THREADID
| TAG_EXISTS
| TAG_THREADNAME
5325 | TAG_MOREDISPLAY
| TAG_DISPLAY
;
5326 if (0 != (result
= remote_get_threadinfo (ref
, set
, &threadinfo
)))
5327 display_thread_info (&threadinfo
);
5332 threadinfo_test_cmd (char *cmd
, int tty
)
5334 int athread
= SAMPLE_THREAD
;
5338 int_to_threadref (&thread
, athread
);
5339 printf_filtered ("Remote Threadinfo test\n");
5340 if (!get_and_display_threadinfo (&thread
))
5341 printf_filtered ("FAIL cannot get thread info\n");
5345 thread_display_step (threadref
*ref
, void *context
)
5347 /* output_threadid(" threadstep ",ref); *//* simple test */
5348 return get_and_display_threadinfo (ref
);
5352 threadlist_update_test_cmd (char *cmd
, int tty
)
5354 printf_filtered ("Remote Threadlist update test\n");
5355 remote_threadlist_iterator (thread_display_step
, 0, CRAZY_MAX_THREADS
);
5359 init_remote_threadtests (void)
5361 add_com ("tlist", class_obscure
, threadlist_test_cmd
,
5362 "Fetch and print the remote list of thread identifiers, one pkt only");
5363 add_com ("tinfo", class_obscure
, threadinfo_test_cmd
,
5364 "Fetch and display info about one thread");
5365 add_com ("tset", class_obscure
, threadset_test_cmd
,
5366 "Test setting to a different thread");
5367 add_com ("tupd", class_obscure
, threadlist_update_test_cmd
,
5368 "Iterate through updating all remote thread info");
5369 add_com ("talive", class_obscure
, threadalive_test
,
5370 " Remote thread alive test ");
5375 /* Convert a thread ID to a string. Returns the string in a static
5379 remote_pid_to_str (ptid_t ptid
)
5381 static char buf
[30];
5383 sprintf (buf
, "Thread %d", PIDGET (ptid
));
5388 init_remote_ops (void)
5390 remote_ops
.to_shortname
= "remote";
5391 remote_ops
.to_longname
= "Remote serial target in gdb-specific protocol";
5393 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
5394 Specify the serial device it is connected to\n\
5395 (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).";
5396 remote_ops
.to_open
= remote_open
;
5397 remote_ops
.to_close
= remote_close
;
5398 remote_ops
.to_detach
= remote_detach
;
5399 remote_ops
.to_resume
= remote_resume
;
5400 remote_ops
.to_wait
= remote_wait
;
5401 remote_ops
.to_fetch_registers
= remote_fetch_registers
;
5402 remote_ops
.to_store_registers
= remote_store_registers
;
5403 remote_ops
.to_prepare_to_store
= remote_prepare_to_store
;
5404 remote_ops
.to_xfer_memory
= remote_xfer_memory
;
5405 remote_ops
.to_files_info
= remote_files_info
;
5406 remote_ops
.to_insert_breakpoint
= remote_insert_breakpoint
;
5407 remote_ops
.to_remove_breakpoint
= remote_remove_breakpoint
;
5408 remote_ops
.to_kill
= remote_kill
;
5409 remote_ops
.to_load
= generic_load
;
5410 remote_ops
.to_mourn_inferior
= remote_mourn
;
5411 remote_ops
.to_thread_alive
= remote_thread_alive
;
5412 remote_ops
.to_find_new_threads
= remote_threads_info
;
5413 remote_ops
.to_pid_to_str
= remote_pid_to_str
;
5414 remote_ops
.to_extra_thread_info
= remote_threads_extra_info
;
5415 remote_ops
.to_stop
= remote_stop
;
5416 remote_ops
.to_query
= remote_query
;
5417 remote_ops
.to_rcmd
= remote_rcmd
;
5418 remote_ops
.to_stratum
= process_stratum
;
5419 remote_ops
.to_has_all_memory
= 1;
5420 remote_ops
.to_has_memory
= 1;
5421 remote_ops
.to_has_stack
= 1;
5422 remote_ops
.to_has_registers
= 1;
5423 remote_ops
.to_has_execution
= 1;
5424 remote_ops
.to_has_thread_control
= tc_schedlock
; /* can lock scheduler */
5425 remote_ops
.to_magic
= OPS_MAGIC
;
5428 /* Set up the extended remote vector by making a copy of the standard
5429 remote vector and adding to it. */
5432 init_extended_remote_ops (void)
5434 extended_remote_ops
= remote_ops
;
5436 extended_remote_ops
.to_shortname
= "extended-remote";
5437 extended_remote_ops
.to_longname
=
5438 "Extended remote serial target in gdb-specific protocol";
5439 extended_remote_ops
.to_doc
=
5440 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
5441 Specify the serial device it is connected to (e.g. /dev/ttya).",
5442 extended_remote_ops
.to_open
= extended_remote_open
;
5443 extended_remote_ops
.to_create_inferior
= extended_remote_create_inferior
;
5444 extended_remote_ops
.to_mourn_inferior
= extended_remote_mourn
;
5448 * Command: info remote-process
5450 * This implements Cisco's version of the "info proc" command.
5452 * This query allows the target stub to return an arbitrary string
5453 * (or strings) giving arbitrary information about the target process.
5454 * This is optional; the target stub isn't required to implement it.
5456 * Syntax: qfProcessInfo request first string
5457 * qsProcessInfo request subsequent string
5458 * reply: 'O'<hex-encoded-string>
5459 * 'l' last reply (empty)
5463 remote_info_process (char *args
, int from_tty
)
5465 struct remote_state
*rs
= get_remote_state ();
5466 char *buf
= alloca (rs
->remote_packet_size
);
5468 if (remote_desc
== 0)
5469 error ("Command can only be used when connected to the remote target.");
5471 putpkt ("qfProcessInfo");
5472 getpkt (buf
, (rs
->remote_packet_size
), 0);
5474 return; /* Silently: target does not support this feature. */
5477 error ("info proc: target error.");
5479 while (buf
[0] == 'O') /* Capitol-O packet */
5481 remote_console_output (&buf
[1]);
5482 putpkt ("qsProcessInfo");
5483 getpkt (buf
, (rs
->remote_packet_size
), 0);
5492 remote_cisco_open (char *name
, int from_tty
)
5496 error ("To open a remote debug connection, you need to specify what \n"
5497 "device is attached to the remote system (e.g. host:port).");
5499 /* See FIXME above */
5500 wait_forever_enabled_p
= 1;
5502 target_preopen (from_tty
);
5504 unpush_target (&remote_cisco_ops
);
5506 remote_desc
= remote_serial_open (name
);
5508 perror_with_name (name
);
5511 * If a baud rate was specified on the gdb command line it will
5512 * be greater than the initial value of -1. If it is, use it otherwise
5516 baud_rate
= (baud_rate
> 0) ? baud_rate
: 9600;
5517 if (serial_setbaudrate (remote_desc
, baud_rate
))
5519 serial_close (remote_desc
);
5520 perror_with_name (name
);
5523 serial_raw (remote_desc
);
5525 /* If there is something sitting in the buffer we might take it as a
5526 response to a command, which would be bad. */
5527 serial_flush_input (remote_desc
);
5531 puts_filtered ("Remote debugging using ");
5532 puts_filtered (name
);
5533 puts_filtered ("\n");
5536 remote_cisco_mode
= 1;
5538 push_target (&remote_cisco_ops
); /* Switch to using cisco target now */
5540 init_all_packet_configs ();
5542 general_thread
= -2;
5543 continue_thread
= -2;
5545 /* Probe for ability to use "ThreadInfo" query, as required. */
5546 use_threadinfo_query
= 1;
5547 use_threadextra_query
= 1;
5549 /* Without this, some commands which require an active target (such
5550 as kill) won't work. This variable serves (at least) double duty
5551 as both the pid of the target process (if it has such), and as a
5552 flag indicating that a target is active. These functions should
5553 be split out into seperate variables, especially since GDB will
5554 someday have a notion of debugging several processes. */
5555 inferior_ptid
= pid_to_ptid (MAGIC_NULL_PID
);
5557 /* Start the remote connection; if error, discard this target. See
5558 the comments in remote_open_1() for further details. */
5559 ex
= catch_exceptions (uiout
,
5560 remote_start_remote_dummy
, NULL
,
5561 "Couldn't establish connection to remote"
5572 remote_cisco_close (int quitting
)
5574 remote_cisco_mode
= 0;
5575 remote_close (quitting
);
5579 remote_cisco_mourn (void)
5581 remote_mourn_1 (&remote_cisco_ops
);
5593 /* Shared between readsocket() and readtty(). The size is arbitrary,
5594 however all targets are known to support a 400 character packet. */
5595 static char tty_input
[400];
5597 static int escape_count
;
5598 static int echo_check
;
5599 extern int quit_flag
;
5606 /* Loop until the socket doesn't have any more data */
5608 while ((data
= readchar (0)) >= 0)
5610 /* Check for the escape sequence */
5613 /* If this is the fourth escape, get out */
5614 if (++escape_count
== 4)
5619 { /* This is a '|', but not the fourth in a row.
5620 Continue without echoing it. If it isn't actually
5621 one of four in a row, it'll be echoed later. */
5628 /* Ensure any pending '|'s are flushed. */
5630 for (; escape_count
> 0; escape_count
--)
5634 if (data
== '\r') /* If this is a return character, */
5635 continue; /* - just supress it. */
5637 if (echo_check
!= -1) /* Check for echo of user input. */
5639 if (tty_input
[echo_check
] == data
)
5641 gdb_assert (echo_check
<= sizeof (tty_input
));
5642 echo_check
++; /* Character matched user input: */
5643 continue; /* Continue without echoing it. */
5645 else if ((data
== '\n') && (tty_input
[echo_check
] == '\r'))
5646 { /* End of the line (and of echo checking). */
5647 echo_check
= -1; /* No more echo supression */
5648 continue; /* Continue without echoing. */
5651 { /* Failed check for echo of user input.
5652 We now have some suppressed output to flush! */
5655 for (j
= 0; j
< echo_check
; j
++)
5656 putchar (tty_input
[j
]);
5660 putchar (data
); /* Default case: output the char. */
5663 if (data
== SERIAL_TIMEOUT
) /* Timeout returned from readchar. */
5664 return READ_MORE
; /* Try to read some more */
5666 return FATAL_ERROR
; /* Trouble, bail out */
5674 /* First, read a buffer full from the terminal */
5675 tty_bytecount
= read (fileno (stdin
), tty_input
, sizeof (tty_input
) - 1);
5676 if (tty_bytecount
== -1)
5678 perror ("readtty: read failed");
5682 /* Remove a quoted newline. */
5683 if (tty_input
[tty_bytecount
- 1] == '\n' &&
5684 tty_input
[tty_bytecount
- 2] == '\\') /* line ending in backslash */
5686 tty_input
[--tty_bytecount
] = 0; /* remove newline */
5687 tty_input
[--tty_bytecount
] = 0; /* remove backslash */
5690 /* Turn trailing newlines into returns */
5691 if (tty_input
[tty_bytecount
- 1] == '\n')
5692 tty_input
[tty_bytecount
- 1] = '\r';
5694 /* If the line consists of a ~, enter debugging mode. */
5695 if ((tty_input
[0] == '~') && (tty_bytecount
== 2))
5698 /* Make this a zero terminated string and write it out */
5699 tty_input
[tty_bytecount
] = 0;
5700 if (serial_write (remote_desc
, tty_input
, tty_bytecount
))
5702 perror_with_name ("readtty: write failed");
5712 fd_set input
; /* file descriptors for select */
5713 int tablesize
; /* max number of FDs for select */
5717 extern int escape_count
; /* global shared by readsocket */
5718 extern int echo_check
; /* ditto */
5723 tablesize
= 8 * sizeof (input
);
5727 /* Check for anything from our socket - doesn't block. Note that
5728 this must be done *before* the select as there may be
5729 buffered I/O waiting to be processed. */
5731 if ((status
= readsocket ()) == FATAL_ERROR
)
5733 error ("Debugging terminated by communications error");
5735 else if (status
!= READ_MORE
)
5740 fflush (stdout
); /* Flush output before blocking */
5742 /* Now block on more socket input or TTY input */
5745 FD_SET (fileno (stdin
), &input
);
5746 FD_SET (deprecated_serial_fd (remote_desc
), &input
);
5748 status
= select (tablesize
, &input
, 0, 0, 0);
5749 if ((status
== -1) && (errno
!= EINTR
))
5751 error ("Communications error on select %d", errno
);
5754 /* Handle Control-C typed */
5758 if ((++quit_count
) == 2)
5760 if (query ("Interrupt GDB? "))
5762 printf_filtered ("Interrupted by user.\n");
5763 throw_exception (RETURN_QUIT
);
5770 serial_send_break (remote_desc
);
5772 serial_write (remote_desc
, "\003", 1);
5777 /* Handle console input */
5779 if (FD_ISSET (fileno (stdin
), &input
))
5783 status
= readtty ();
5784 if (status
== READ_MORE
)
5787 return status
; /* telnet session ended */
5793 remote_cisco_wait (ptid_t ptid
, struct target_waitstatus
*status
)
5795 if (minitelnet () != ENTER_DEBUG
)
5797 error ("Debugging session terminated by protocol error");
5800 return remote_wait (ptid
, status
);
5804 init_remote_cisco_ops (void)
5806 remote_cisco_ops
.to_shortname
= "cisco";
5807 remote_cisco_ops
.to_longname
= "Remote serial target in cisco-specific protocol";
5808 remote_cisco_ops
.to_doc
=
5809 "Use a remote machine via TCP, using a cisco-specific protocol.\n\
5810 Specify the serial device it is connected to (e.g. host:2020).";
5811 remote_cisco_ops
.to_open
= remote_cisco_open
;
5812 remote_cisco_ops
.to_close
= remote_cisco_close
;
5813 remote_cisco_ops
.to_detach
= remote_detach
;
5814 remote_cisco_ops
.to_resume
= remote_resume
;
5815 remote_cisco_ops
.to_wait
= remote_cisco_wait
;
5816 remote_cisco_ops
.to_fetch_registers
= remote_fetch_registers
;
5817 remote_cisco_ops
.to_store_registers
= remote_store_registers
;
5818 remote_cisco_ops
.to_prepare_to_store
= remote_prepare_to_store
;
5819 remote_cisco_ops
.to_xfer_memory
= remote_xfer_memory
;
5820 remote_cisco_ops
.to_files_info
= remote_files_info
;
5821 remote_cisco_ops
.to_insert_breakpoint
= remote_insert_breakpoint
;
5822 remote_cisco_ops
.to_remove_breakpoint
= remote_remove_breakpoint
;
5823 remote_cisco_ops
.to_kill
= remote_kill
;
5824 remote_cisco_ops
.to_load
= generic_load
;
5825 remote_cisco_ops
.to_mourn_inferior
= remote_cisco_mourn
;
5826 remote_cisco_ops
.to_thread_alive
= remote_thread_alive
;
5827 remote_cisco_ops
.to_find_new_threads
= remote_threads_info
;
5828 remote_cisco_ops
.to_pid_to_str
= remote_pid_to_str
;
5829 remote_cisco_ops
.to_extra_thread_info
= remote_threads_extra_info
;
5830 remote_cisco_ops
.to_stratum
= process_stratum
;
5831 remote_cisco_ops
.to_has_all_memory
= 1;
5832 remote_cisco_ops
.to_has_memory
= 1;
5833 remote_cisco_ops
.to_has_stack
= 1;
5834 remote_cisco_ops
.to_has_registers
= 1;
5835 remote_cisco_ops
.to_has_execution
= 1;
5836 remote_cisco_ops
.to_magic
= OPS_MAGIC
;
5840 remote_can_async_p (void)
5842 /* We're async whenever the serial device is. */
5843 return (current_target
.to_async_mask_value
) && serial_can_async_p (remote_desc
);
5847 remote_is_async_p (void)
5849 /* We're async whenever the serial device is. */
5850 return (current_target
.to_async_mask_value
) && serial_is_async_p (remote_desc
);
5853 /* Pass the SERIAL event on and up to the client. One day this code
5854 will be able to delay notifying the client of an event until the
5855 point where an entire packet has been received. */
5857 static void (*async_client_callback
) (enum inferior_event_type event_type
, void *context
);
5858 static void *async_client_context
;
5859 static serial_event_ftype remote_async_serial_handler
;
5862 remote_async_serial_handler (struct serial
*scb
, void *context
)
5864 /* Don't propogate error information up to the client. Instead let
5865 the client find out about the error by querying the target. */
5866 async_client_callback (INF_REG_EVENT
, async_client_context
);
5870 remote_async (void (*callback
) (enum inferior_event_type event_type
, void *context
), void *context
)
5872 if (current_target
.to_async_mask_value
== 0)
5873 internal_error (__FILE__
, __LINE__
,
5874 "Calling remote_async when async is masked");
5876 if (callback
!= NULL
)
5878 serial_async (remote_desc
, remote_async_serial_handler
, NULL
);
5879 async_client_callback
= callback
;
5880 async_client_context
= context
;
5883 serial_async (remote_desc
, NULL
, NULL
);
5886 /* Target async and target extended-async.
5888 This are temporary targets, until it is all tested. Eventually
5889 async support will be incorporated int the usual 'remote'
5893 init_remote_async_ops (void)
5895 remote_async_ops
.to_shortname
= "async";
5896 remote_async_ops
.to_longname
= "Remote serial target in async version of the gdb-specific protocol";
5897 remote_async_ops
.to_doc
=
5898 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
5899 Specify the serial device it is connected to (e.g. /dev/ttya).";
5900 remote_async_ops
.to_open
= remote_async_open
;
5901 remote_async_ops
.to_close
= remote_close
;
5902 remote_async_ops
.to_detach
= remote_async_detach
;
5903 remote_async_ops
.to_resume
= remote_async_resume
;
5904 remote_async_ops
.to_wait
= remote_async_wait
;
5905 remote_async_ops
.to_fetch_registers
= remote_fetch_registers
;
5906 remote_async_ops
.to_store_registers
= remote_store_registers
;
5907 remote_async_ops
.to_prepare_to_store
= remote_prepare_to_store
;
5908 remote_async_ops
.to_xfer_memory
= remote_xfer_memory
;
5909 remote_async_ops
.to_files_info
= remote_files_info
;
5910 remote_async_ops
.to_insert_breakpoint
= remote_insert_breakpoint
;
5911 remote_async_ops
.to_remove_breakpoint
= remote_remove_breakpoint
;
5912 remote_async_ops
.to_terminal_inferior
= remote_async_terminal_inferior
;
5913 remote_async_ops
.to_terminal_ours
= remote_async_terminal_ours
;
5914 remote_async_ops
.to_kill
= remote_async_kill
;
5915 remote_async_ops
.to_load
= generic_load
;
5916 remote_async_ops
.to_mourn_inferior
= remote_async_mourn
;
5917 remote_async_ops
.to_thread_alive
= remote_thread_alive
;
5918 remote_async_ops
.to_find_new_threads
= remote_threads_info
;
5919 remote_async_ops
.to_pid_to_str
= remote_pid_to_str
;
5920 remote_async_ops
.to_extra_thread_info
= remote_threads_extra_info
;
5921 remote_async_ops
.to_stop
= remote_stop
;
5922 remote_async_ops
.to_query
= remote_query
;
5923 remote_async_ops
.to_rcmd
= remote_rcmd
;
5924 remote_async_ops
.to_stratum
= process_stratum
;
5925 remote_async_ops
.to_has_all_memory
= 1;
5926 remote_async_ops
.to_has_memory
= 1;
5927 remote_async_ops
.to_has_stack
= 1;
5928 remote_async_ops
.to_has_registers
= 1;
5929 remote_async_ops
.to_has_execution
= 1;
5930 remote_async_ops
.to_has_thread_control
= tc_schedlock
; /* can lock scheduler */
5931 remote_async_ops
.to_can_async_p
= remote_can_async_p
;
5932 remote_async_ops
.to_is_async_p
= remote_is_async_p
;
5933 remote_async_ops
.to_async
= remote_async
;
5934 remote_async_ops
.to_async_mask_value
= 1;
5935 remote_async_ops
.to_magic
= OPS_MAGIC
;
5938 /* Set up the async extended remote vector by making a copy of the standard
5939 remote vector and adding to it. */
5942 init_extended_async_remote_ops (void)
5944 extended_async_remote_ops
= remote_async_ops
;
5946 extended_async_remote_ops
.to_shortname
= "extended-async";
5947 extended_async_remote_ops
.to_longname
=
5948 "Extended remote serial target in async gdb-specific protocol";
5949 extended_async_remote_ops
.to_doc
=
5950 "Use a remote computer via a serial line, using an async gdb-specific protocol.\n\
5951 Specify the serial device it is connected to (e.g. /dev/ttya).",
5952 extended_async_remote_ops
.to_open
= extended_remote_async_open
;
5953 extended_async_remote_ops
.to_create_inferior
= extended_remote_async_create_inferior
;
5954 extended_async_remote_ops
.to_mourn_inferior
= extended_remote_mourn
;
5958 set_remote_cmd (char *args
, int from_tty
)
5963 show_remote_cmd (char *args
, int from_tty
)
5966 show_remote_protocol_Z_packet_cmd (args
, from_tty
);
5967 show_remote_protocol_e_packet_cmd (args
, from_tty
);
5968 show_remote_protocol_E_packet_cmd (args
, from_tty
);
5969 show_remote_protocol_P_packet_cmd (args
, from_tty
);
5970 show_remote_protocol_qSymbol_packet_cmd (args
, from_tty
);
5971 show_remote_protocol_binary_download_cmd (args
, from_tty
);
5975 build_remote_gdbarch_data (void)
5977 remote_address_size
= TARGET_ADDR_BIT
;
5980 /* Saved pointer to previous owner of the new_objfile event. */
5981 static void (*remote_new_objfile_chain
) (struct objfile
*);
5983 /* Function to be called whenever a new objfile (shlib) is detected. */
5985 remote_new_objfile (struct objfile
*objfile
)
5987 if (remote_desc
!= 0) /* Have a remote connection */
5989 remote_check_symbols (objfile
);
5991 /* Call predecessor on chain, if any. */
5992 if (remote_new_objfile_chain
!= 0 &&
5994 remote_new_objfile_chain (objfile
);
5998 _initialize_remote (void)
6000 static struct cmd_list_element
*remote_set_cmdlist
;
6001 static struct cmd_list_element
*remote_show_cmdlist
;
6002 struct cmd_list_element
*tmpcmd
;
6004 /* architecture specific data */
6005 remote_gdbarch_data_handle
= register_gdbarch_data (init_remote_state
,
6008 /* Old tacky stuff. NOTE: This comes after the remote protocol so
6009 that the remote protocol has been initialized. */
6010 register_gdbarch_swap (&remote_address_size
,
6011 sizeof (&remote_address_size
), NULL
);
6012 register_gdbarch_swap (NULL
, 0, build_remote_gdbarch_data
);
6015 add_target (&remote_ops
);
6017 init_extended_remote_ops ();
6018 add_target (&extended_remote_ops
);
6020 init_remote_async_ops ();
6021 add_target (&remote_async_ops
);
6023 init_extended_async_remote_ops ();
6024 add_target (&extended_async_remote_ops
);
6026 init_remote_cisco_ops ();
6027 add_target (&remote_cisco_ops
);
6029 /* Hook into new objfile notification. */
6030 remote_new_objfile_chain
= target_new_objfile_hook
;
6031 target_new_objfile_hook
= remote_new_objfile
;
6034 init_remote_threadtests ();
6037 /* set/show remote ... */
6039 add_prefix_cmd ("remote", class_maintenance
, set_remote_cmd
, "\
6040 Remote protocol specific variables\n\
6041 Configure various remote-protocol specific variables such as\n\
6042 the packets being used",
6043 &remote_set_cmdlist
, "set remote ",
6044 0/*allow-unknown*/, &setlist
);
6045 add_prefix_cmd ("remote", class_maintenance
, show_remote_cmd
, "\
6046 Remote protocol specific variables\n\
6047 Configure various remote-protocol specific variables such as\n\
6048 the packets being used",
6049 &remote_show_cmdlist
, "show remote ",
6050 0/*allow-unknown*/, &showlist
);
6052 add_cmd ("compare-sections", class_obscure
, compare_sections_command
,
6053 "Compare section data on target to the exec file.\n\
6054 Argument is a single section name (default: all loaded sections).",
6057 add_cmd ("packet", class_maintenance
, packet_command
,
6058 "Send an arbitrary packet to a remote target.\n\
6059 maintenance packet TEXT\n\
6060 If GDB is talking to an inferior via the GDB serial protocol, then\n\
6061 this command sends the string TEXT to the inferior, and displays the\n\
6062 response packet. GDB supplies the initial `$' character, and the\n\
6063 terminating `#' character and checksum.",
6067 (add_set_boolean_cmd ("remotebreak", no_class
, &remote_break
,
6068 "Set whether to send break if interrupted.\n",
6072 /* Install commands for configuring memory read/write packets. */
6074 add_cmd ("remotewritesize", no_class
, set_memory_write_packet_size
,
6075 "Set the maximum number of bytes per memory write packet (deprecated).\n",
6077 add_cmd ("remotewritesize", no_class
, show_memory_write_packet_size
,
6078 "Show the maximum number of bytes per memory write packet (deprecated).\n",
6080 add_cmd ("memory-write-packet-size", no_class
,
6081 set_memory_write_packet_size
,
6082 "Set the maximum number of bytes per memory-write packet.\n"
6083 "Specify the number of bytes in a packet or 0 (zero) for the\n"
6084 "default packet size. The actual limit is further reduced\n"
6085 "dependent on the target. Specify ``fixed'' to disable the\n"
6086 "further restriction and ``limit'' to enable that restriction\n",
6087 &remote_set_cmdlist
);
6088 add_cmd ("memory-read-packet-size", no_class
,
6089 set_memory_read_packet_size
,
6090 "Set the maximum number of bytes per memory-read packet.\n"
6091 "Specify the number of bytes in a packet or 0 (zero) for the\n"
6092 "default packet size. The actual limit is further reduced\n"
6093 "dependent on the target. Specify ``fixed'' to disable the\n"
6094 "further restriction and ``limit'' to enable that restriction\n",
6095 &remote_set_cmdlist
);
6096 add_cmd ("memory-write-packet-size", no_class
,
6097 show_memory_write_packet_size
,
6098 "Show the maximum number of bytes per memory-write packet.\n",
6099 &remote_show_cmdlist
);
6100 add_cmd ("memory-read-packet-size", no_class
,
6101 show_memory_read_packet_size
,
6102 "Show the maximum number of bytes per memory-read packet.\n",
6103 &remote_show_cmdlist
);
6106 (add_set_cmd ("remoteaddresssize", class_obscure
,
6107 var_integer
, (char *) &remote_address_size
,
6108 "Set the maximum size of the address (in bits) \
6109 in a memory packet.\n",
6113 add_packet_config_cmd (&remote_protocol_binary_download
,
6114 "X", "binary-download",
6115 set_remote_protocol_binary_download_cmd
,
6116 show_remote_protocol_binary_download_cmd
,
6117 &remote_set_cmdlist
, &remote_show_cmdlist
,
6120 /* XXXX - should ``set remotebinarydownload'' be retained for
6123 (add_set_cmd ("remotebinarydownload", no_class
,
6124 var_boolean
, (char *) &remote_binary_download
,
6125 "Set binary downloads.\n", &setlist
),
6129 add_info ("remote-process", remote_info_process
,
6130 "Query the remote system for process info.");
6132 add_packet_config_cmd (&remote_protocol_qSymbol
,
6133 "qSymbol", "symbol-lookup",
6134 set_remote_protocol_qSymbol_packet_cmd
,
6135 show_remote_protocol_qSymbol_packet_cmd
,
6136 &remote_set_cmdlist
, &remote_show_cmdlist
,
6139 add_packet_config_cmd (&remote_protocol_e
,
6140 "e", "step-over-range",
6141 set_remote_protocol_e_packet_cmd
,
6142 show_remote_protocol_e_packet_cmd
,
6143 &remote_set_cmdlist
, &remote_show_cmdlist
,
6145 /* Disable by default. The ``e'' packet has nasty interactions with
6146 the threading code - it relies on global state. */
6147 remote_protocol_e
.detect
= CMD_AUTO_BOOLEAN_FALSE
;
6148 update_packet_config (&remote_protocol_e
);
6150 add_packet_config_cmd (&remote_protocol_E
,
6151 "E", "step-over-range-w-signal",
6152 set_remote_protocol_E_packet_cmd
,
6153 show_remote_protocol_E_packet_cmd
,
6154 &remote_set_cmdlist
, &remote_show_cmdlist
,
6156 /* Disable by default. The ``e'' packet has nasty interactions with
6157 the threading code - it relies on global state. */
6158 remote_protocol_E
.detect
= CMD_AUTO_BOOLEAN_FALSE
;
6159 update_packet_config (&remote_protocol_E
);
6161 add_packet_config_cmd (&remote_protocol_P
,
6162 "P", "set-register",
6163 set_remote_protocol_P_packet_cmd
,
6164 show_remote_protocol_P_packet_cmd
,
6165 &remote_set_cmdlist
, &remote_show_cmdlist
,
6168 add_packet_config_cmd (&remote_protocol_Z
[Z_PACKET_SOFTWARE_BP
],
6169 "Z0", "software-breakpoint",
6170 set_remote_protocol_Z_software_bp_packet_cmd
,
6171 show_remote_protocol_Z_software_bp_packet_cmd
,
6172 &remote_set_cmdlist
, &remote_show_cmdlist
,
6175 add_packet_config_cmd (&remote_protocol_Z
[Z_PACKET_HARDWARE_BP
],
6176 "Z1", "hardware-breakpoint",
6177 set_remote_protocol_Z_hardware_bp_packet_cmd
,
6178 show_remote_protocol_Z_hardware_bp_packet_cmd
,
6179 &remote_set_cmdlist
, &remote_show_cmdlist
,
6182 add_packet_config_cmd (&remote_protocol_Z
[Z_PACKET_WRITE_WP
],
6183 "Z2", "write-watchpoint",
6184 set_remote_protocol_Z_write_wp_packet_cmd
,
6185 show_remote_protocol_Z_write_wp_packet_cmd
,
6186 &remote_set_cmdlist
, &remote_show_cmdlist
,
6189 add_packet_config_cmd (&remote_protocol_Z
[Z_PACKET_READ_WP
],
6190 "Z3", "read-watchpoint",
6191 set_remote_protocol_Z_read_wp_packet_cmd
,
6192 show_remote_protocol_Z_read_wp_packet_cmd
,
6193 &remote_set_cmdlist
, &remote_show_cmdlist
,
6196 add_packet_config_cmd (&remote_protocol_Z
[Z_PACKET_ACCESS_WP
],
6197 "Z4", "access-watchpoint",
6198 set_remote_protocol_Z_access_wp_packet_cmd
,
6199 show_remote_protocol_Z_access_wp_packet_cmd
,
6200 &remote_set_cmdlist
, &remote_show_cmdlist
,
6203 /* Keep the old ``set remote Z-packet ...'' working. */
6204 tmpcmd
= add_set_auto_boolean_cmd ("Z-packet", class_obscure
,
6205 &remote_Z_packet_detect
,
6207 Set use of remote protocol `Z' packets", &remote_set_cmdlist
);
6208 set_cmd_sfunc (tmpcmd
, set_remote_protocol_Z_packet_cmd
);
6209 add_cmd ("Z-packet", class_obscure
, show_remote_protocol_Z_packet_cmd
,
6210 "Show use of remote protocol `Z' packets ",
6211 &remote_show_cmdlist
);