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 (PTR
);
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 PTR sigint_remote_twice_token
;
974 PTR 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 (void *dummy
)
2112 start_remote (); /* Initialize gdb process mechanisms */
2117 remote_start_remote (PTR dummy
)
2119 immediate_quit
++; /* Allow user to interrupt it */
2121 /* Ack any packet which the remote side has already sent. */
2122 serial_write (remote_desc
, "+", 1);
2124 /* Let the stub know that we want it to return the thread. */
2127 inferior_ptid
= remote_current_thread (inferior_ptid
);
2129 get_offsets (); /* Get text, data & bss offsets */
2131 putpkt ("?"); /* initiate a query from remote machine */
2134 return remote_start_remote_dummy (dummy
);
2137 /* Open a connection to a remote debugger.
2138 NAME is the filename used for communication. */
2141 remote_open (char *name
, int from_tty
)
2143 remote_open_1 (name
, from_tty
, &remote_ops
, 0);
2146 /* Just like remote_open, but with asynchronous support. */
2148 remote_async_open (char *name
, int from_tty
)
2150 remote_async_open_1 (name
, from_tty
, &remote_async_ops
, 0);
2153 /* Open a connection to a remote debugger using the extended
2154 remote gdb protocol. NAME is the filename used for communication. */
2157 extended_remote_open (char *name
, int from_tty
)
2159 remote_open_1 (name
, from_tty
, &extended_remote_ops
, 1 /*extended_p */ );
2162 /* Just like extended_remote_open, but with asynchronous support. */
2164 extended_remote_async_open (char *name
, int from_tty
)
2166 remote_async_open_1 (name
, from_tty
, &extended_async_remote_ops
, 1 /*extended_p */ );
2169 /* Generic code for opening a connection to a remote target. */
2172 init_all_packet_configs (void)
2175 update_packet_config (&remote_protocol_e
);
2176 update_packet_config (&remote_protocol_E
);
2177 update_packet_config (&remote_protocol_P
);
2178 update_packet_config (&remote_protocol_qSymbol
);
2179 for (i
= 0; i
< NR_Z_PACKET_TYPES
; i
++)
2180 update_packet_config (&remote_protocol_Z
[i
]);
2181 /* Force remote_write_bytes to check whether target supports binary
2183 update_packet_config (&remote_protocol_binary_download
);
2186 /* Symbol look-up. */
2189 remote_check_symbols (struct objfile
*objfile
)
2191 struct remote_state
*rs
= get_remote_state ();
2192 char *msg
, *reply
, *tmp
;
2193 struct minimal_symbol
*sym
;
2196 if (remote_protocol_qSymbol
.support
== PACKET_DISABLE
)
2199 msg
= alloca (rs
->remote_packet_size
);
2200 reply
= alloca (rs
->remote_packet_size
);
2202 /* Invite target to request symbol lookups. */
2204 putpkt ("qSymbol::");
2205 getpkt (reply
, (rs
->remote_packet_size
), 0);
2206 packet_ok (reply
, &remote_protocol_qSymbol
);
2208 while (strncmp (reply
, "qSymbol:", 8) == 0)
2211 end
= hex2bin (tmp
, msg
, strlen (tmp
) / 2);
2213 sym
= lookup_minimal_symbol (msg
, NULL
, NULL
);
2215 sprintf (msg
, "qSymbol::%s", &reply
[8]);
2217 sprintf (msg
, "qSymbol:%s:%s",
2218 paddr_nz (SYMBOL_VALUE_ADDRESS (sym
)),
2221 getpkt (reply
, (rs
->remote_packet_size
), 0);
2225 static struct serial
*
2226 remote_serial_open (char *name
)
2228 static int udp_warning
= 0;
2230 /* FIXME: Parsing NAME here is a hack. But we want to warn here instead
2231 of in ser-tcp.c, because it is the remote protocol assuming that the
2232 serial connection is reliable and not the serial connection promising
2234 if (!udp_warning
&& strncmp (name
, "udp:", 4) == 0)
2236 warning ("The remote protocol may be unreliable over UDP.");
2237 warning ("Some events may be lost, rendering further debugging "
2242 return serial_open (name
);
2246 remote_open_1 (char *name
, int from_tty
, struct target_ops
*target
,
2249 struct remote_state
*rs
= get_remote_state ();
2251 error ("To open a remote debug connection, you need to specify what\n"
2252 "serial device is attached to the remote system\n"
2253 "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).");
2255 /* See FIXME above */
2256 wait_forever_enabled_p
= 1;
2258 target_preopen (from_tty
);
2260 unpush_target (target
);
2262 remote_desc
= remote_serial_open (name
);
2264 perror_with_name (name
);
2266 if (baud_rate
!= -1)
2268 if (serial_setbaudrate (remote_desc
, baud_rate
))
2270 serial_close (remote_desc
);
2271 perror_with_name (name
);
2275 serial_raw (remote_desc
);
2277 /* If there is something sitting in the buffer we might take it as a
2278 response to a command, which would be bad. */
2279 serial_flush_input (remote_desc
);
2283 puts_filtered ("Remote debugging using ");
2284 puts_filtered (name
);
2285 puts_filtered ("\n");
2287 push_target (target
); /* Switch to using remote target now */
2289 init_all_packet_configs ();
2291 general_thread
= -2;
2292 continue_thread
= -2;
2294 /* Probe for ability to use "ThreadInfo" query, as required. */
2295 use_threadinfo_query
= 1;
2296 use_threadextra_query
= 1;
2298 /* Without this, some commands which require an active target (such
2299 as kill) won't work. This variable serves (at least) double duty
2300 as both the pid of the target process (if it has such), and as a
2301 flag indicating that a target is active. These functions should
2302 be split out into seperate variables, especially since GDB will
2303 someday have a notion of debugging several processes. */
2305 inferior_ptid
= pid_to_ptid (MAGIC_NULL_PID
);
2306 #ifdef SOLIB_CREATE_INFERIOR_HOOK
2307 /* First delete any symbols previously loaded from shared libraries. */
2308 no_shared_libraries (NULL
, 0);
2311 /* Start the remote connection; if error (0), discard this target.
2312 In particular, if the user quits, be sure to discard it
2313 (we'd be in an inconsistent state otherwise). */
2314 if (!catch_errors (remote_start_remote
, NULL
,
2315 "Couldn't establish connection to remote target\n",
2324 /* Tell the remote that we are using the extended protocol. */
2325 char *buf
= alloca (rs
->remote_packet_size
);
2327 getpkt (buf
, (rs
->remote_packet_size
), 0);
2329 #ifdef SOLIB_CREATE_INFERIOR_HOOK
2330 /* FIXME: need a master target_open vector from which all
2331 remote_opens can be called, so that stuff like this can
2332 go there. Failing that, the following code must be copied
2333 to the open function for any remote target that wants to
2334 support svr4 shared libraries. */
2336 /* Set up to detect and load shared libraries. */
2337 if (exec_bfd
) /* No use without an exec file. */
2339 SOLIB_CREATE_INFERIOR_HOOK (PIDGET (inferior_ptid
));
2340 remote_check_symbols (symfile_objfile
);
2345 /* Just like remote_open but with asynchronous support. */
2347 remote_async_open_1 (char *name
, int from_tty
, struct target_ops
*target
,
2350 struct remote_state
*rs
= get_remote_state ();
2352 error ("To open a remote debug connection, you need to specify what\n"
2353 "serial device is attached to the remote system\n"
2354 "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).");
2356 target_preopen (from_tty
);
2358 unpush_target (target
);
2360 remote_desc
= remote_serial_open (name
);
2362 perror_with_name (name
);
2364 if (baud_rate
!= -1)
2366 if (serial_setbaudrate (remote_desc
, baud_rate
))
2368 serial_close (remote_desc
);
2369 perror_with_name (name
);
2373 serial_raw (remote_desc
);
2375 /* If there is something sitting in the buffer we might take it as a
2376 response to a command, which would be bad. */
2377 serial_flush_input (remote_desc
);
2381 puts_filtered ("Remote debugging using ");
2382 puts_filtered (name
);
2383 puts_filtered ("\n");
2386 push_target (target
); /* Switch to using remote target now */
2388 init_all_packet_configs ();
2390 general_thread
= -2;
2391 continue_thread
= -2;
2393 /* Probe for ability to use "ThreadInfo" query, as required. */
2394 use_threadinfo_query
= 1;
2395 use_threadextra_query
= 1;
2397 /* Without this, some commands which require an active target (such
2398 as kill) won't work. This variable serves (at least) double duty
2399 as both the pid of the target process (if it has such), and as a
2400 flag indicating that a target is active. These functions should
2401 be split out into seperate variables, especially since GDB will
2402 someday have a notion of debugging several processes. */
2403 inferior_ptid
= pid_to_ptid (MAGIC_NULL_PID
);
2405 /* With this target we start out by owning the terminal. */
2406 remote_async_terminal_ours_p
= 1;
2408 /* FIXME: cagney/1999-09-23: During the initial connection it is
2409 assumed that the target is already ready and able to respond to
2410 requests. Unfortunately remote_start_remote() eventually calls
2411 wait_for_inferior() with no timeout. wait_forever_enabled_p gets
2412 around this. Eventually a mechanism that allows
2413 wait_for_inferior() to expect/get timeouts will be
2415 wait_forever_enabled_p
= 0;
2417 #ifdef SOLIB_CREATE_INFERIOR_HOOK
2418 /* First delete any symbols previously loaded from shared libraries. */
2419 no_shared_libraries (NULL
, 0);
2422 /* Start the remote connection; if error (0), discard this target.
2423 In particular, if the user quits, be sure to discard it
2424 (we'd be in an inconsistent state otherwise). */
2425 if (!catch_errors (remote_start_remote
, NULL
,
2426 "Couldn't establish connection to remote target\n",
2430 wait_forever_enabled_p
= 1;
2434 wait_forever_enabled_p
= 1;
2438 /* Tell the remote that we are using the extended protocol. */
2439 char *buf
= alloca (rs
->remote_packet_size
);
2441 getpkt (buf
, (rs
->remote_packet_size
), 0);
2443 #ifdef SOLIB_CREATE_INFERIOR_HOOK
2444 /* FIXME: need a master target_open vector from which all
2445 remote_opens can be called, so that stuff like this can
2446 go there. Failing that, the following code must be copied
2447 to the open function for any remote target that wants to
2448 support svr4 shared libraries. */
2450 /* Set up to detect and load shared libraries. */
2451 if (exec_bfd
) /* No use without an exec file. */
2453 SOLIB_CREATE_INFERIOR_HOOK (PIDGET (inferior_ptid
));
2454 remote_check_symbols (symfile_objfile
);
2459 /* This takes a program previously attached to and detaches it. After
2460 this is done, GDB can be used to debug some other program. We
2461 better not have left any breakpoints in the target program or it'll
2462 die when it hits one. */
2465 remote_detach (char *args
, int from_tty
)
2467 struct remote_state
*rs
= get_remote_state ();
2468 char *buf
= alloca (rs
->remote_packet_size
);
2471 error ("Argument given to \"detach\" when remotely debugging.");
2473 /* Tell the remote target to detach. */
2475 remote_send (buf
, (rs
->remote_packet_size
));
2477 target_mourn_inferior ();
2479 puts_filtered ("Ending remote debugging.\n");
2483 /* Same as remote_detach, but with async support. */
2485 remote_async_detach (char *args
, int from_tty
)
2487 struct remote_state
*rs
= get_remote_state ();
2488 char *buf
= alloca (rs
->remote_packet_size
);
2491 error ("Argument given to \"detach\" when remotely debugging.");
2493 /* Tell the remote target to detach. */
2495 remote_send (buf
, (rs
->remote_packet_size
));
2497 /* Unregister the file descriptor from the event loop. */
2498 if (target_is_async_p ())
2499 serial_async (remote_desc
, NULL
, 0);
2501 target_mourn_inferior ();
2503 puts_filtered ("Ending remote debugging.\n");
2506 /* Convert hex digit A to a number. */
2511 if (a
>= '0' && a
<= '9')
2513 else if (a
>= 'a' && a
<= 'f')
2514 return a
- 'a' + 10;
2515 else if (a
>= 'A' && a
<= 'F')
2516 return a
- 'A' + 10;
2518 error ("Reply contains invalid hex digit %d", a
);
2522 hex2bin (const char *hex
, char *bin
, int count
)
2526 for (i
= 0; i
< count
; i
++)
2528 if (hex
[0] == 0 || hex
[1] == 0)
2530 /* Hex string is short, or of uneven length.
2531 Return the count that has been converted so far. */
2534 *bin
++ = fromhex (hex
[0]) * 16 + fromhex (hex
[1]);
2540 /* Convert number NIB to a hex digit. */
2548 return 'a' + nib
- 10;
2552 bin2hex (const char *bin
, char *hex
, int count
)
2555 /* May use a length, or a nul-terminated string as input. */
2557 count
= strlen (bin
);
2559 for (i
= 0; i
< count
; i
++)
2561 *hex
++ = tohex ((*bin
>> 4) & 0xf);
2562 *hex
++ = tohex (*bin
++ & 0xf);
2568 /* Tell the remote machine to resume. */
2570 static enum target_signal last_sent_signal
= TARGET_SIGNAL_0
;
2572 static int last_sent_step
;
2575 remote_resume (ptid_t ptid
, int step
, enum target_signal siggnal
)
2577 struct remote_state
*rs
= get_remote_state ();
2578 char *buf
= alloca (rs
->remote_packet_size
);
2579 int pid
= PIDGET (ptid
);
2583 set_thread (0, 0); /* run any thread */
2585 set_thread (pid
, 0); /* run this thread */
2587 last_sent_signal
= siggnal
;
2588 last_sent_step
= step
;
2590 /* A hook for when we need to do something at the last moment before
2592 if (target_resume_hook
)
2593 (*target_resume_hook
) ();
2596 /* The s/S/c/C packets do not return status. So if the target does
2597 not support the S or C packets, the debug agent returns an empty
2598 string which is detected in remote_wait(). This protocol defect
2599 is fixed in the e/E packets. */
2601 if (step
&& step_range_end
)
2603 /* If the target does not support the 'E' packet, we try the 'S'
2604 packet. Ideally we would fall back to the 'e' packet if that
2605 too is not supported. But that would require another copy of
2606 the code to issue the 'e' packet (and fall back to 's' if not
2607 supported) in remote_wait(). */
2609 if (siggnal
!= TARGET_SIGNAL_0
)
2611 if (remote_protocol_E
.support
!= PACKET_DISABLE
)
2615 *p
++ = tohex (((int) siggnal
>> 4) & 0xf);
2616 *p
++ = tohex (((int) siggnal
) & 0xf);
2618 p
+= hexnumstr (p
, (ULONGEST
) step_range_start
);
2620 p
+= hexnumstr (p
, (ULONGEST
) step_range_end
);
2624 getpkt (buf
, (rs
->remote_packet_size
), 0);
2626 if (packet_ok (buf
, &remote_protocol_E
) == PACKET_OK
)
2632 if (remote_protocol_e
.support
!= PACKET_DISABLE
)
2636 p
+= hexnumstr (p
, (ULONGEST
) step_range_start
);
2638 p
+= hexnumstr (p
, (ULONGEST
) step_range_end
);
2642 getpkt (buf
, (rs
->remote_packet_size
), 0);
2644 if (packet_ok (buf
, &remote_protocol_e
) == PACKET_OK
)
2650 if (siggnal
!= TARGET_SIGNAL_0
)
2652 buf
[0] = step
? 'S' : 'C';
2653 buf
[1] = tohex (((int) siggnal
>> 4) & 0xf);
2654 buf
[2] = tohex (((int) siggnal
) & 0xf);
2658 strcpy (buf
, step
? "s" : "c");
2663 /* Same as remote_resume, but with async support. */
2665 remote_async_resume (ptid_t ptid
, int step
, enum target_signal siggnal
)
2667 struct remote_state
*rs
= get_remote_state ();
2668 char *buf
= alloca (rs
->remote_packet_size
);
2669 int pid
= PIDGET (ptid
);
2673 set_thread (0, 0); /* run any thread */
2675 set_thread (pid
, 0); /* run this thread */
2677 last_sent_signal
= siggnal
;
2678 last_sent_step
= step
;
2680 /* A hook for when we need to do something at the last moment before
2682 if (target_resume_hook
)
2683 (*target_resume_hook
) ();
2685 /* The s/S/c/C packets do not return status. So if the target does
2686 not support the S or C packets, the debug agent returns an empty
2687 string which is detected in remote_wait(). This protocol defect
2688 is fixed in the e/E packets. */
2690 if (step
&& step_range_end
)
2692 /* If the target does not support the 'E' packet, we try the 'S'
2693 packet. Ideally we would fall back to the 'e' packet if that
2694 too is not supported. But that would require another copy of
2695 the code to issue the 'e' packet (and fall back to 's' if not
2696 supported) in remote_wait(). */
2698 if (siggnal
!= TARGET_SIGNAL_0
)
2700 if (remote_protocol_E
.support
!= PACKET_DISABLE
)
2704 *p
++ = tohex (((int) siggnal
>> 4) & 0xf);
2705 *p
++ = tohex (((int) siggnal
) & 0xf);
2707 p
+= hexnumstr (p
, (ULONGEST
) step_range_start
);
2709 p
+= hexnumstr (p
, (ULONGEST
) step_range_end
);
2713 getpkt (buf
, (rs
->remote_packet_size
), 0);
2715 if (packet_ok (buf
, &remote_protocol_E
) == PACKET_OK
)
2716 goto register_event_loop
;
2721 if (remote_protocol_e
.support
!= PACKET_DISABLE
)
2725 p
+= hexnumstr (p
, (ULONGEST
) step_range_start
);
2727 p
+= hexnumstr (p
, (ULONGEST
) step_range_end
);
2731 getpkt (buf
, (rs
->remote_packet_size
), 0);
2733 if (packet_ok (buf
, &remote_protocol_e
) == PACKET_OK
)
2734 goto register_event_loop
;
2739 if (siggnal
!= TARGET_SIGNAL_0
)
2741 buf
[0] = step
? 'S' : 'C';
2742 buf
[1] = tohex (((int) siggnal
>> 4) & 0xf);
2743 buf
[2] = tohex ((int) siggnal
& 0xf);
2747 strcpy (buf
, step
? "s" : "c");
2751 register_event_loop
:
2752 /* We are about to start executing the inferior, let's register it
2753 with the event loop. NOTE: this is the one place where all the
2754 execution commands end up. We could alternatively do this in each
2755 of the execution commands in infcmd.c.*/
2756 /* FIXME: ezannoni 1999-09-28: We may need to move this out of here
2757 into infcmd.c in order to allow inferior function calls to work
2758 NOT asynchronously. */
2759 if (event_loop_p
&& target_can_async_p ())
2760 target_async (inferior_event_handler
, 0);
2761 /* Tell the world that the target is now executing. */
2762 /* FIXME: cagney/1999-09-23: Is it the targets responsibility to set
2763 this? Instead, should the client of target just assume (for
2764 async targets) that the target is going to start executing? Is
2765 this information already found in the continuation block? */
2766 if (target_is_async_p ())
2767 target_executing
= 1;
2771 /* Set up the signal handler for SIGINT, while the target is
2772 executing, ovewriting the 'regular' SIGINT signal handler. */
2774 initialize_sigint_signal_handler (void)
2776 sigint_remote_token
=
2777 create_async_signal_handler (async_remote_interrupt
, NULL
);
2778 signal (SIGINT
, handle_remote_sigint
);
2781 /* Signal handler for SIGINT, while the target is executing. */
2783 handle_remote_sigint (int sig
)
2785 signal (sig
, handle_remote_sigint_twice
);
2786 sigint_remote_twice_token
=
2787 create_async_signal_handler (async_remote_interrupt_twice
, NULL
);
2788 mark_async_signal_handler_wrapper (sigint_remote_token
);
2791 /* Signal handler for SIGINT, installed after SIGINT has already been
2792 sent once. It will take effect the second time that the user sends
2795 handle_remote_sigint_twice (int sig
)
2797 signal (sig
, handle_sigint
);
2798 sigint_remote_twice_token
=
2799 create_async_signal_handler (inferior_event_handler_wrapper
, NULL
);
2800 mark_async_signal_handler_wrapper (sigint_remote_twice_token
);
2803 /* Perform the real interruption of the target execution, in response
2806 async_remote_interrupt (gdb_client_data arg
)
2809 fprintf_unfiltered (gdb_stdlog
, "remote_interrupt called\n");
2814 /* Perform interrupt, if the first attempt did not succeed. Just give
2815 up on the target alltogether. */
2817 async_remote_interrupt_twice (gdb_client_data arg
)
2820 fprintf_unfiltered (gdb_stdlog
, "remote_interrupt_twice called\n");
2821 /* Do something only if the target was not killed by the previous
2823 if (target_executing
)
2826 signal (SIGINT
, handle_remote_sigint
);
2830 /* Reinstall the usual SIGINT handlers, after the target has
2833 cleanup_sigint_signal_handler (void *dummy
)
2835 signal (SIGINT
, handle_sigint
);
2836 if (sigint_remote_twice_token
)
2837 delete_async_signal_handler ((struct async_signal_handler
**) & sigint_remote_twice_token
);
2838 if (sigint_remote_token
)
2839 delete_async_signal_handler ((struct async_signal_handler
**) & sigint_remote_token
);
2842 /* Send ^C to target to halt it. Target will respond, and send us a
2844 static void (*ofunc
) (int);
2846 /* The command line interface's stop routine. This function is installed
2847 as a signal handler for SIGINT. The first time a user requests a
2848 stop, we call remote_stop to send a break or ^C. If there is no
2849 response from the target (it didn't stop when the user requested it),
2850 we ask the user if he'd like to detach from the target. */
2852 remote_interrupt (int signo
)
2854 /* If this doesn't work, try more severe steps. */
2855 signal (signo
, remote_interrupt_twice
);
2858 fprintf_unfiltered (gdb_stdlog
, "remote_interrupt called\n");
2863 /* The user typed ^C twice. */
2866 remote_interrupt_twice (int signo
)
2868 signal (signo
, ofunc
);
2870 signal (signo
, remote_interrupt
);
2873 /* This is the generic stop called via the target vector. When a target
2874 interrupt is requested, either by the command line or the GUI, we
2875 will eventually end up here. */
2879 /* Send a break or a ^C, depending on user preference. */
2881 fprintf_unfiltered (gdb_stdlog
, "remote_stop called\n");
2884 serial_send_break (remote_desc
);
2886 serial_write (remote_desc
, "\003", 1);
2889 /* Ask the user what to do when an interrupt is received. */
2892 interrupt_query (void)
2894 target_terminal_ours ();
2896 if (query ("Interrupted while waiting for the program.\n\
2897 Give up (and stop debugging it)? "))
2899 target_mourn_inferior ();
2900 throw_exception (RETURN_QUIT
);
2903 target_terminal_inferior ();
2906 /* Enable/disable target terminal ownership. Most targets can use
2907 terminal groups to control terminal ownership. Remote targets are
2908 different in that explicit transfer of ownership to/from GDB/target
2912 remote_async_terminal_inferior (void)
2914 /* FIXME: cagney/1999-09-27: Shouldn't need to test for
2915 sync_execution here. This function should only be called when
2916 GDB is resuming the inferior in the forground. A background
2917 resume (``run&'') should leave GDB in control of the terminal and
2918 consequently should not call this code. */
2919 if (!sync_execution
)
2921 /* FIXME: cagney/1999-09-27: Closely related to the above. Make
2922 calls target_terminal_*() idenpotent. The event-loop GDB talking
2923 to an asynchronous target with a synchronous command calls this
2924 function from both event-top.c and infrun.c/infcmd.c. Once GDB
2925 stops trying to transfer the terminal to the target when it
2926 shouldn't this guard can go away. */
2927 if (!remote_async_terminal_ours_p
)
2929 delete_file_handler (input_fd
);
2930 remote_async_terminal_ours_p
= 0;
2931 initialize_sigint_signal_handler ();
2932 /* NOTE: At this point we could also register our selves as the
2933 recipient of all input. Any characters typed could then be
2934 passed on down to the target. */
2938 remote_async_terminal_ours (void)
2940 /* See FIXME in remote_async_terminal_inferior. */
2941 if (!sync_execution
)
2943 /* See FIXME in remote_async_terminal_inferior. */
2944 if (remote_async_terminal_ours_p
)
2946 cleanup_sigint_signal_handler (NULL
);
2947 add_file_handler (input_fd
, stdin_event_handler
, 0);
2948 remote_async_terminal_ours_p
= 1;
2951 /* If nonzero, ignore the next kill. */
2956 remote_console_output (char *msg
)
2960 for (p
= msg
; p
[0] && p
[1]; p
+= 2)
2963 char c
= fromhex (p
[0]) * 16 + fromhex (p
[1]);
2966 fputs_unfiltered (tb
, gdb_stdtarg
);
2968 gdb_flush (gdb_stdtarg
);
2971 /* Wait until the remote machine stops, then return,
2972 storing status in STATUS just as `wait' would.
2973 Returns "pid", which in the case of a multi-threaded
2974 remote OS, is the thread-id. */
2977 remote_wait (ptid_t ptid
, struct target_waitstatus
*status
)
2979 struct remote_state
*rs
= get_remote_state ();
2980 unsigned char *buf
= alloca (rs
->remote_packet_size
);
2981 int thread_num
= -1;
2983 status
->kind
= TARGET_WAITKIND_EXITED
;
2984 status
->value
.integer
= 0;
2990 ofunc
= signal (SIGINT
, remote_interrupt
);
2991 getpkt (buf
, (rs
->remote_packet_size
), 1);
2992 signal (SIGINT
, ofunc
);
2994 /* This is a hook for when we need to do something (perhaps the
2995 collection of trace data) every time the target stops. */
2996 if (target_wait_loop_hook
)
2997 (*target_wait_loop_hook
) ();
3001 case 'E': /* Error of some sort */
3002 warning ("Remote failure reply: %s", buf
);
3004 case 'T': /* Status with PC, SP, FP, ... */
3007 char* regs
= (char*) alloca (MAX_REGISTER_RAW_SIZE
);
3009 /* Expedited reply, containing Signal, {regno, reg} repeat */
3010 /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where
3012 n... = register number
3013 r... = register contents
3015 p
= &buf
[3]; /* after Txx */
3023 /* Read the ``P'' register number. */
3024 LONGEST pnum
= strtol ((const char *) p
, &p_temp
, 16);
3025 p1
= (unsigned char *) p_temp
;
3027 if (p1
== p
) /* No register number present here */
3029 p1
= (unsigned char *) strchr ((const char *) p
, ':');
3031 warning ("Malformed packet(a) (missing colon): %s\n\
3034 if (strncmp ((const char *) p
, "thread", p1
- p
) == 0)
3036 p_temp
= unpack_varlen_hex (++p1
, &thread_num
);
3037 record_currthread (thread_num
);
3038 p
= (unsigned char *) p_temp
;
3043 struct packet_reg
*reg
= packet_reg_from_pnum (rs
, pnum
);
3047 warning ("Malformed packet(b) (missing colon): %s\n\
3052 warning ("Remote sent bad register number %s: %s\n\
3054 phex_nz (pnum
, 0), p
, buf
);
3056 fieldsize
= hex2bin (p
, regs
, REGISTER_RAW_SIZE (reg
->regnum
));
3058 if (fieldsize
< REGISTER_RAW_SIZE (reg
->regnum
))
3059 warning ("Remote reply is too short: %s", buf
);
3060 supply_register (reg
->regnum
, regs
);
3065 warning ("Remote register badly formatted: %s", buf
);
3066 warning (" here: %s", p
);
3071 case 'S': /* Old style status, just signal only */
3072 status
->kind
= TARGET_WAITKIND_STOPPED
;
3073 status
->value
.sig
= (enum target_signal
)
3074 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
3078 /* Export Cisco kernel mode as a convenience variable
3079 (so that it can be used in the GDB prompt if desired). */
3081 if (cisco_kernel_mode
== 1)
3082 set_internalvar (lookup_internalvar ("cisco_kernel_mode"),
3083 value_from_string ("PDEBUG-"));
3084 cisco_kernel_mode
= 0;
3085 thread_num
= strtol ((const char *) &buf
[4], NULL
, 16);
3086 record_currthread (thread_num
);
3088 else if (buf
[3] == 'k')
3090 /* Export Cisco kernel mode as a convenience variable
3091 (so that it can be used in the GDB prompt if desired). */
3093 if (cisco_kernel_mode
== 1)
3094 set_internalvar (lookup_internalvar ("cisco_kernel_mode"),
3095 value_from_string ("KDEBUG-"));
3096 cisco_kernel_mode
= 1;
3099 case 'N': /* Cisco special: status and offsets */
3101 bfd_vma text_addr
, data_addr
, bss_addr
;
3102 bfd_signed_vma text_off
, data_off
, bss_off
;
3105 status
->kind
= TARGET_WAITKIND_STOPPED
;
3106 status
->value
.sig
= (enum target_signal
)
3107 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
3109 if (symfile_objfile
== NULL
)
3111 warning ("Relocation packet received with no symbol file. \
3116 /* Relocate object file. Buffer format is NAATT;DD;BB
3117 * where AA is the signal number, TT is the new text
3118 * address, DD * is the new data address, and BB is the
3119 * new bss address. */
3122 text_addr
= strtoul (p
, (char **) &p1
, 16);
3123 if (p1
== p
|| *p1
!= ';')
3124 warning ("Malformed relocation packet: Packet '%s'", buf
);
3126 data_addr
= strtoul (p
, (char **) &p1
, 16);
3127 if (p1
== p
|| *p1
!= ';')
3128 warning ("Malformed relocation packet: Packet '%s'", buf
);
3130 bss_addr
= strtoul (p
, (char **) &p1
, 16);
3132 warning ("Malformed relocation packet: Packet '%s'", buf
);
3134 if (remote_cisco_section_offsets (text_addr
, data_addr
, bss_addr
,
3135 &text_off
, &data_off
, &bss_off
)
3137 if (text_off
!= 0 || data_off
!= 0 || bss_off
!= 0)
3138 remote_cisco_objfile_relocate (text_off
, data_off
, bss_off
);
3142 case 'W': /* Target exited */
3144 /* The remote process exited. */
3145 status
->kind
= TARGET_WAITKIND_EXITED
;
3146 status
->value
.integer
= (fromhex (buf
[1]) << 4) + fromhex (buf
[2]);
3150 status
->kind
= TARGET_WAITKIND_SIGNALLED
;
3151 status
->value
.sig
= (enum target_signal
)
3152 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
3156 case 'O': /* Console output */
3157 remote_console_output (buf
+ 1);
3160 if (last_sent_signal
!= TARGET_SIGNAL_0
)
3162 /* Zero length reply means that we tried 'S' or 'C' and
3163 the remote system doesn't support it. */
3164 target_terminal_ours_for_output ();
3166 ("Can't send signals to this remote system. %s not sent.\n",
3167 target_signal_to_name (last_sent_signal
));
3168 last_sent_signal
= TARGET_SIGNAL_0
;
3169 target_terminal_inferior ();
3171 strcpy ((char *) buf
, last_sent_step
? "s" : "c");
3172 putpkt ((char *) buf
);
3175 /* else fallthrough */
3177 warning ("Invalid remote reply: %s", buf
);
3182 if (thread_num
!= -1)
3184 return pid_to_ptid (thread_num
);
3186 return inferior_ptid
;
3189 /* Async version of remote_wait. */
3191 remote_async_wait (ptid_t ptid
, struct target_waitstatus
*status
)
3193 struct remote_state
*rs
= get_remote_state ();
3194 unsigned char *buf
= alloca (rs
->remote_packet_size
);
3195 int thread_num
= -1;
3197 status
->kind
= TARGET_WAITKIND_EXITED
;
3198 status
->value
.integer
= 0;
3204 if (!target_is_async_p ())
3205 ofunc
= signal (SIGINT
, remote_interrupt
);
3206 /* FIXME: cagney/1999-09-27: If we're in async mode we should
3207 _never_ wait for ever -> test on target_is_async_p().
3208 However, before we do that we need to ensure that the caller
3209 knows how to take the target into/out of async mode. */
3210 getpkt (buf
, (rs
->remote_packet_size
), wait_forever_enabled_p
);
3211 if (!target_is_async_p ())
3212 signal (SIGINT
, ofunc
);
3214 /* This is a hook for when we need to do something (perhaps the
3215 collection of trace data) every time the target stops. */
3216 if (target_wait_loop_hook
)
3217 (*target_wait_loop_hook
) ();
3221 case 'E': /* Error of some sort */
3222 warning ("Remote failure reply: %s", buf
);
3224 case 'T': /* Status with PC, SP, FP, ... */
3227 char* regs
= (char*) alloca (MAX_REGISTER_RAW_SIZE
);
3229 /* Expedited reply, containing Signal, {regno, reg} repeat */
3230 /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where
3232 n... = register number
3233 r... = register contents
3235 p
= &buf
[3]; /* after Txx */
3243 /* Read the register number */
3244 long pnum
= strtol ((const char *) p
, &p_temp
, 16);
3245 p1
= (unsigned char *) p_temp
;
3247 if (p1
== p
) /* No register number present here */
3249 p1
= (unsigned char *) strchr ((const char *) p
, ':');
3251 warning ("Malformed packet(a) (missing colon): %s\n\
3254 if (strncmp ((const char *) p
, "thread", p1
- p
) == 0)
3256 p_temp
= unpack_varlen_hex (++p1
, &thread_num
);
3257 record_currthread (thread_num
);
3258 p
= (unsigned char *) p_temp
;
3263 struct packet_reg
*reg
= packet_reg_from_pnum (rs
, pnum
);
3266 warning ("Malformed packet(b) (missing colon): %s\n\
3271 warning ("Remote sent bad register number %ld: %s\n\
3275 fieldsize
= hex2bin (p
, regs
, REGISTER_RAW_SIZE (reg
->regnum
));
3277 if (fieldsize
< REGISTER_RAW_SIZE (reg
->regnum
))
3278 warning ("Remote reply is too short: %s", buf
);
3279 supply_register (reg
->regnum
, regs
);
3284 warning ("Remote register badly formatted: %s", buf
);
3285 warning (" here: %s", p
);
3290 case 'S': /* Old style status, just signal only */
3291 status
->kind
= TARGET_WAITKIND_STOPPED
;
3292 status
->value
.sig
= (enum target_signal
)
3293 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
3297 /* Export Cisco kernel mode as a convenience variable
3298 (so that it can be used in the GDB prompt if desired). */
3300 if (cisco_kernel_mode
== 1)
3301 set_internalvar (lookup_internalvar ("cisco_kernel_mode"),
3302 value_from_string ("PDEBUG-"));
3303 cisco_kernel_mode
= 0;
3304 thread_num
= strtol ((const char *) &buf
[4], NULL
, 16);
3305 record_currthread (thread_num
);
3307 else if (buf
[3] == 'k')
3309 /* Export Cisco kernel mode as a convenience variable
3310 (so that it can be used in the GDB prompt if desired). */
3312 if (cisco_kernel_mode
== 1)
3313 set_internalvar (lookup_internalvar ("cisco_kernel_mode"),
3314 value_from_string ("KDEBUG-"));
3315 cisco_kernel_mode
= 1;
3318 case 'N': /* Cisco special: status and offsets */
3320 bfd_vma text_addr
, data_addr
, bss_addr
;
3321 bfd_signed_vma text_off
, data_off
, bss_off
;
3324 status
->kind
= TARGET_WAITKIND_STOPPED
;
3325 status
->value
.sig
= (enum target_signal
)
3326 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
3328 if (symfile_objfile
== NULL
)
3330 warning ("Relocation packet recieved with no symbol file. \
3335 /* Relocate object file. Buffer format is NAATT;DD;BB
3336 * where AA is the signal number, TT is the new text
3337 * address, DD * is the new data address, and BB is the
3338 * new bss address. */
3341 text_addr
= strtoul (p
, (char **) &p1
, 16);
3342 if (p1
== p
|| *p1
!= ';')
3343 warning ("Malformed relocation packet: Packet '%s'", buf
);
3345 data_addr
= strtoul (p
, (char **) &p1
, 16);
3346 if (p1
== p
|| *p1
!= ';')
3347 warning ("Malformed relocation packet: Packet '%s'", buf
);
3349 bss_addr
= strtoul (p
, (char **) &p1
, 16);
3351 warning ("Malformed relocation packet: Packet '%s'", buf
);
3353 if (remote_cisco_section_offsets (text_addr
, data_addr
, bss_addr
,
3354 &text_off
, &data_off
, &bss_off
)
3356 if (text_off
!= 0 || data_off
!= 0 || bss_off
!= 0)
3357 remote_cisco_objfile_relocate (text_off
, data_off
, bss_off
);
3361 case 'W': /* Target exited */
3363 /* The remote process exited. */
3364 status
->kind
= TARGET_WAITKIND_EXITED
;
3365 status
->value
.integer
= (fromhex (buf
[1]) << 4) + fromhex (buf
[2]);
3369 status
->kind
= TARGET_WAITKIND_SIGNALLED
;
3370 status
->value
.sig
= (enum target_signal
)
3371 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
3375 case 'O': /* Console output */
3376 remote_console_output (buf
+ 1);
3377 /* Return immediately to the event loop. The event loop will
3378 still be waiting on the inferior afterwards. */
3379 status
->kind
= TARGET_WAITKIND_IGNORE
;
3382 if (last_sent_signal
!= TARGET_SIGNAL_0
)
3384 /* Zero length reply means that we tried 'S' or 'C' and
3385 the remote system doesn't support it. */
3386 target_terminal_ours_for_output ();
3388 ("Can't send signals to this remote system. %s not sent.\n",
3389 target_signal_to_name (last_sent_signal
));
3390 last_sent_signal
= TARGET_SIGNAL_0
;
3391 target_terminal_inferior ();
3393 strcpy ((char *) buf
, last_sent_step
? "s" : "c");
3394 putpkt ((char *) buf
);
3397 /* else fallthrough */
3399 warning ("Invalid remote reply: %s", buf
);
3404 if (thread_num
!= -1)
3406 return pid_to_ptid (thread_num
);
3408 return inferior_ptid
;
3411 /* Number of bytes of registers this stub implements. */
3413 static int register_bytes_found
;
3415 /* Read the remote registers into the block REGS. */
3416 /* Currently we just read all the registers, so we don't use regnum. */
3420 remote_fetch_registers (int regnum
)
3422 struct remote_state
*rs
= get_remote_state ();
3423 char *buf
= alloca (rs
->remote_packet_size
);
3426 char *regs
= alloca (rs
->sizeof_g_packet
);
3428 set_thread (PIDGET (inferior_ptid
), 1);
3432 struct packet_reg
*reg
= packet_reg_from_regnum (rs
, regnum
);
3433 gdb_assert (reg
!= NULL
);
3434 if (!reg
->in_g_packet
)
3435 internal_error (__FILE__
, __LINE__
,
3436 "Attempt to fetch a non G-packet register when this "
3437 "remote.c does not support the p-packet.");
3441 remote_send (buf
, (rs
->remote_packet_size
));
3443 /* Save the size of the packet sent to us by the target. Its used
3444 as a heuristic when determining the max size of packets that the
3445 target can safely receive. */
3446 if ((rs
->actual_register_packet_size
) == 0)
3447 (rs
->actual_register_packet_size
) = strlen (buf
);
3449 /* Unimplemented registers read as all bits zero. */
3450 memset (regs
, 0, rs
->sizeof_g_packet
);
3452 /* We can get out of synch in various cases. If the first character
3453 in the buffer is not a hex character, assume that has happened
3454 and try to fetch another packet to read. */
3455 while ((buf
[0] < '0' || buf
[0] > '9')
3456 && (buf
[0] < 'a' || buf
[0] > 'f')
3457 && buf
[0] != 'x') /* New: unavailable register value */
3460 fprintf_unfiltered (gdb_stdlog
,
3461 "Bad register packet; fetching a new packet\n");
3462 getpkt (buf
, (rs
->remote_packet_size
), 0);
3465 /* Reply describes registers byte by byte, each byte encoded as two
3466 hex characters. Suck them all up, then supply them to the
3467 register cacheing/storage mechanism. */
3470 for (i
= 0; i
< rs
->sizeof_g_packet
; i
++)
3476 warning ("Remote reply is of odd length: %s", buf
);
3477 /* Don't change register_bytes_found in this case, and don't
3478 print a second warning. */
3481 if (p
[0] == 'x' && p
[1] == 'x')
3482 regs
[i
] = 0; /* 'x' */
3484 regs
[i
] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
3488 if (i
!= register_bytes_found
)
3490 register_bytes_found
= i
;
3491 if (REGISTER_BYTES_OK_P ()
3492 && !REGISTER_BYTES_OK (i
))
3493 warning ("Remote reply is too short: %s", buf
);
3499 for (i
= 0; i
< NUM_REGS
+ NUM_PSEUDO_REGS
; i
++)
3501 struct packet_reg
*r
= &rs
->regs
[i
];
3504 supply_register (r
->regnum
, regs
+ r
->offset
);
3505 if (buf
[r
->offset
* 2] == 'x')
3506 set_register_cached (i
, -1);
3512 /* Prepare to store registers. Since we may send them all (using a
3513 'G' request), we have to read out the ones we don't want to change
3517 remote_prepare_to_store (void)
3519 /* Make sure the entire registers array is valid. */
3520 switch (remote_protocol_P
.support
)
3522 case PACKET_DISABLE
:
3523 case PACKET_SUPPORT_UNKNOWN
:
3524 /* NOTE: This isn't rs->sizeof_g_packet because here, we are
3525 forcing the register cache to read its and not the target
3527 read_register_bytes (0, (char *) NULL
, REGISTER_BYTES
); /* OK use. */
3534 /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF
3535 packet was not recognized. */
3538 store_register_using_P (int regnum
)
3540 struct remote_state
*rs
= get_remote_state ();
3541 struct packet_reg
*reg
= packet_reg_from_regnum (rs
, regnum
);
3542 /* Try storing a single register. */
3543 char *buf
= alloca (rs
->remote_packet_size
);
3544 char *regp
= alloca (MAX_REGISTER_RAW_SIZE
);
3548 sprintf (buf
, "P%s=", phex_nz (reg
->pnum
, 0));
3549 p
= buf
+ strlen (buf
);
3550 regcache_collect (reg
->regnum
, regp
);
3551 bin2hex (regp
, p
, REGISTER_RAW_SIZE (reg
->regnum
));
3552 remote_send (buf
, rs
->remote_packet_size
);
3554 return buf
[0] != '\0';
3558 /* Store register REGNUM, or all registers if REGNUM == -1, from the contents
3559 of the register cache buffer. FIXME: ignores errors. */
3562 remote_store_registers (int regnum
)
3564 struct remote_state
*rs
= get_remote_state ();
3570 set_thread (PIDGET (inferior_ptid
), 1);
3574 switch (remote_protocol_P
.support
)
3576 case PACKET_DISABLE
:
3579 if (store_register_using_P (regnum
))
3582 error ("Protocol error: P packet not recognized by stub");
3583 case PACKET_SUPPORT_UNKNOWN
:
3584 if (store_register_using_P (regnum
))
3586 /* The stub recognized the 'P' packet. Remember this. */
3587 remote_protocol_P
.support
= PACKET_ENABLE
;
3592 /* The stub does not support the 'P' packet. Use 'G'
3593 instead, and don't try using 'P' in the future (it
3594 will just waste our time). */
3595 remote_protocol_P
.support
= PACKET_DISABLE
;
3601 /* Extract all the registers in the regcache copying them into a
3605 regs
= alloca (rs
->sizeof_g_packet
);
3606 memset (regs
, rs
->sizeof_g_packet
, 0);
3607 for (i
= 0; i
< NUM_REGS
+ NUM_PSEUDO_REGS
; i
++)
3609 struct packet_reg
*r
= &rs
->regs
[i
];
3611 regcache_collect (r
->regnum
, regs
+ r
->offset
);
3615 /* Command describes registers byte by byte,
3616 each byte encoded as two hex characters. */
3617 buf
= alloca (rs
->remote_packet_size
);
3620 /* remote_prepare_to_store insures that register_bytes_found gets set. */
3621 bin2hex (regs
, p
, register_bytes_found
);
3622 remote_send (buf
, (rs
->remote_packet_size
));
3626 /* Return the number of hex digits in num. */
3629 hexnumlen (ULONGEST num
)
3633 for (i
= 0; num
!= 0; i
++)
3639 /* Set BUF to the minimum number of hex digits representing NUM. */
3642 hexnumstr (char *buf
, ULONGEST num
)
3644 int len
= hexnumlen (num
);
3645 return hexnumnstr (buf
, num
, len
);
3649 /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */
3652 hexnumnstr (char *buf
, ULONGEST num
, int width
)
3658 for (i
= width
- 1; i
>= 0; i
--)
3660 buf
[i
] = "0123456789abcdef"[(num
& 0xf)];
3667 /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */
3670 remote_address_masked (CORE_ADDR addr
)
3672 if (remote_address_size
> 0
3673 && remote_address_size
< (sizeof (ULONGEST
) * 8))
3675 /* Only create a mask when that mask can safely be constructed
3676 in a ULONGEST variable. */
3678 mask
= (mask
<< remote_address_size
) - 1;
3684 /* Determine whether the remote target supports binary downloading.
3685 This is accomplished by sending a no-op memory write of zero length
3686 to the target at the specified address. It does not suffice to send
3687 the whole packet, since many stubs strip the eighth bit and subsequently
3688 compute a wrong checksum, which causes real havoc with remote_write_bytes.
3690 NOTE: This can still lose if the serial line is not eight-bit
3691 clean. In cases like this, the user should clear "remote
3695 check_binary_download (CORE_ADDR addr
)
3697 struct remote_state
*rs
= get_remote_state ();
3698 switch (remote_protocol_binary_download
.support
)
3700 case PACKET_DISABLE
:
3704 case PACKET_SUPPORT_UNKNOWN
:
3706 char *buf
= alloca (rs
->remote_packet_size
);
3711 p
+= hexnumstr (p
, (ULONGEST
) addr
);
3713 p
+= hexnumstr (p
, (ULONGEST
) 0);
3717 putpkt_binary (buf
, (int) (p
- buf
));
3718 getpkt (buf
, (rs
->remote_packet_size
), 0);
3723 fprintf_unfiltered (gdb_stdlog
,
3724 "binary downloading NOT suppported by target\n");
3725 remote_protocol_binary_download
.support
= PACKET_DISABLE
;
3730 fprintf_unfiltered (gdb_stdlog
,
3731 "binary downloading suppported by target\n");
3732 remote_protocol_binary_download
.support
= PACKET_ENABLE
;
3739 /* Write memory data directly to the remote machine.
3740 This does not inform the data cache; the data cache uses this.
3741 MEMADDR is the address in the remote memory space.
3742 MYADDR is the address of the buffer in our space.
3743 LEN is the number of bytes.
3745 Returns number of bytes transferred, or 0 (setting errno) for
3746 error. Only transfer a single packet. */
3749 remote_write_bytes (CORE_ADDR memaddr
, char *myaddr
, int len
)
3752 int max_buf_size
; /* Max size of packet output buffer */
3754 unsigned char *plen
;
3760 /* Verify that the target can support a binary download */
3761 check_binary_download (memaddr
);
3763 /* Determine the max packet size. */
3764 max_buf_size
= get_memory_write_packet_size ();
3765 sizeof_buf
= max_buf_size
+ 1; /* Space for trailing NUL */
3766 buf
= alloca (sizeof_buf
);
3768 /* Subtract header overhead from max payload size - $M<memaddr>,<len>:#nn */
3769 max_buf_size
-= 2 + hexnumlen (memaddr
+ len
- 1) + 1 + hexnumlen (len
) + 4;
3771 /* construct "M"<memaddr>","<len>":" */
3772 /* sprintf (buf, "M%lx,%x:", (unsigned long) memaddr, todo); */
3775 /* Append [XM]. Compute a best guess of the number of bytes
3776 actually transfered. */
3777 switch (remote_protocol_binary_download
.support
)
3781 /* Best guess at number of bytes that will fit. */
3782 todo
= min (len
, max_buf_size
);
3784 case PACKET_DISABLE
:
3786 /* num bytes that will fit */
3787 todo
= min (len
, max_buf_size
/ 2);
3789 case PACKET_SUPPORT_UNKNOWN
:
3790 internal_error (__FILE__
, __LINE__
,
3791 "remote_write_bytes: bad internal state");
3793 internal_error (__FILE__
, __LINE__
, "bad switch");
3796 /* Append <memaddr> */
3797 memaddr
= remote_address_masked (memaddr
);
3798 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
3801 /* Append <len>. Retain the location/size of <len>. It may
3802 need to be adjusted once the packet body has been created. */
3804 plenlen
= hexnumstr (p
, (ULONGEST
) todo
);
3809 /* Append the packet body. */
3810 switch (remote_protocol_binary_download
.support
)
3813 /* Binary mode. Send target system values byte by byte, in
3814 increasing byte addresses. Only escape certain critical
3817 (nr_bytes
< todo
) && (p
- buf
) < (max_buf_size
- 2);
3820 switch (myaddr
[nr_bytes
] & 0xff)
3825 /* These must be escaped */
3827 *p
++ = (myaddr
[nr_bytes
] & 0xff) ^ 0x20;
3830 *p
++ = myaddr
[nr_bytes
] & 0xff;
3834 if (nr_bytes
< todo
)
3836 /* Escape chars have filled up the buffer prematurely,
3837 and we have actually sent fewer bytes than planned.
3838 Fix-up the length field of the packet. Use the same
3839 number of characters as before. */
3841 plen
+= hexnumnstr (plen
, (ULONGEST
) nr_bytes
, plenlen
);
3842 *plen
= ':'; /* overwrite \0 from hexnumnstr() */
3845 case PACKET_DISABLE
:
3846 /* Normal mode: Send target system values byte by byte, in
3847 increasing byte addresses. Each byte is encoded as a two hex
3849 nr_bytes
= bin2hex (myaddr
, p
, todo
);
3852 case PACKET_SUPPORT_UNKNOWN
:
3853 internal_error (__FILE__
, __LINE__
,
3854 "remote_write_bytes: bad internal state");
3856 internal_error (__FILE__
, __LINE__
, "bad switch");
3859 putpkt_binary (buf
, (int) (p
- buf
));
3860 getpkt (buf
, sizeof_buf
, 0);
3864 /* There is no correspondance between what the remote protocol
3865 uses for errors and errno codes. We would like a cleaner way
3866 of representing errors (big enough to include errno codes,
3867 bfd_error codes, and others). But for now just return EIO. */
3872 /* Return NR_BYTES, not TODO, in case escape chars caused us to send fewer
3873 bytes than we'd planned. */
3877 /* Read memory data directly from the remote machine.
3878 This does not use the data cache; the data cache uses this.
3879 MEMADDR is the address in the remote memory space.
3880 MYADDR is the address of the buffer in our space.
3881 LEN is the number of bytes.
3883 Returns number of bytes transferred, or 0 for error. */
3885 /* NOTE: cagney/1999-10-18: This function (and its siblings in other
3886 remote targets) shouldn't attempt to read the entire buffer.
3887 Instead it should read a single packet worth of data and then
3888 return the byte size of that packet to the caller. The caller (its
3889 caller and its callers caller ;-) already contains code for
3890 handling partial reads. */
3893 remote_read_bytes (CORE_ADDR memaddr
, char *myaddr
, int len
)
3896 int max_buf_size
; /* Max size of packet output buffer */
3900 /* Create a buffer big enough for this packet. */
3901 max_buf_size
= get_memory_read_packet_size ();
3902 sizeof_buf
= max_buf_size
+ 1; /* Space for trailing NUL */
3903 buf
= alloca (sizeof_buf
);
3912 todo
= min (len
, max_buf_size
/ 2); /* num bytes that will fit */
3914 /* construct "m"<memaddr>","<len>" */
3915 /* sprintf (buf, "m%lx,%x", (unsigned long) memaddr, todo); */
3916 memaddr
= remote_address_masked (memaddr
);
3919 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
3921 p
+= hexnumstr (p
, (ULONGEST
) todo
);
3925 getpkt (buf
, sizeof_buf
, 0);
3929 /* There is no correspondance between what the remote protocol uses
3930 for errors and errno codes. We would like a cleaner way of
3931 representing errors (big enough to include errno codes, bfd_error
3932 codes, and others). But for now just return EIO. */
3937 /* Reply describes memory byte by byte,
3938 each byte encoded as two hex characters. */
3941 if ((i
= hex2bin (p
, myaddr
, todo
)) < todo
)
3943 /* Reply is short. This means that we were able to read
3944 only part of what we wanted to. */
3945 return i
+ (origlen
- len
);
3954 /* Read or write LEN bytes from inferior memory at MEMADDR,
3955 transferring to or from debugger address BUFFER. Write to inferior if
3956 SHOULD_WRITE is nonzero. Returns length of data written or read; 0
3957 for error. TARGET is unused. */
3961 remote_xfer_memory (CORE_ADDR mem_addr
, char *buffer
, int mem_len
,
3962 int should_write
, struct mem_attrib
*attrib
,
3963 struct target_ops
*target
)
3965 CORE_ADDR targ_addr
;
3969 REMOTE_TRANSLATE_XFER_ADDRESS (mem_addr
, mem_len
, &targ_addr
, &targ_len
);
3974 res
= remote_write_bytes (targ_addr
, buffer
, targ_len
);
3976 res
= remote_read_bytes (targ_addr
, buffer
, targ_len
);
3983 /* Enable after 4.12. */
3986 remote_search (int len
, char *data
, char *mask
, CORE_ADDR startaddr
,
3987 int increment
, CORE_ADDR lorange
, CORE_ADDR hirange
,
3988 CORE_ADDR
*addr_found
, char *data_found
)
3990 if (increment
== -4 && len
== 4)
3992 long mask_long
, data_long
;
3993 long data_found_long
;
3994 CORE_ADDR addr_we_found
;
3995 char *buf
= alloca (rs
->remote_packet_size
);
3996 long returned_long
[2];
3999 mask_long
= extract_unsigned_integer (mask
, len
);
4000 data_long
= extract_unsigned_integer (data
, len
);
4001 sprintf (buf
, "t%x:%x,%x", startaddr
, data_long
, mask_long
);
4003 getpkt (buf
, (rs
->remote_packet_size
), 0);
4006 /* The stub doesn't support the 't' request. We might want to
4007 remember this fact, but on the other hand the stub could be
4008 switched on us. Maybe we should remember it only until
4009 the next "target remote". */
4010 generic_search (len
, data
, mask
, startaddr
, increment
, lorange
,
4011 hirange
, addr_found
, data_found
);
4016 /* There is no correspondance between what the remote protocol uses
4017 for errors and errno codes. We would like a cleaner way of
4018 representing errors (big enough to include errno codes, bfd_error
4019 codes, and others). But for now just use EIO. */
4020 memory_error (EIO
, startaddr
);
4023 while (*p
!= '\0' && *p
!= ',')
4024 addr_we_found
= (addr_we_found
<< 4) + fromhex (*p
++);
4026 error ("Protocol error: short return for search");
4028 data_found_long
= 0;
4029 while (*p
!= '\0' && *p
!= ',')
4030 data_found_long
= (data_found_long
<< 4) + fromhex (*p
++);
4031 /* Ignore anything after this comma, for future extensions. */
4033 if (addr_we_found
< lorange
|| addr_we_found
>= hirange
)
4039 *addr_found
= addr_we_found
;
4040 *data_found
= store_unsigned_integer (data_we_found
, len
);
4043 generic_search (len
, data
, mask
, startaddr
, increment
, lorange
,
4044 hirange
, addr_found
, data_found
);
4049 remote_files_info (struct target_ops
*ignore
)
4051 puts_filtered ("Debugging a target over a serial line.\n");
4054 /* Stuff for dealing with the packets which are part of this protocol.
4055 See comment at top of file for details. */
4057 /* Read a single character from the remote end, masking it down to 7 bits. */
4060 readchar (int timeout
)
4064 ch
= serial_readchar (remote_desc
, timeout
);
4069 switch ((enum serial_rc
) ch
)
4072 target_mourn_inferior ();
4073 error ("Remote connection closed");
4076 perror_with_name ("Remote communication error");
4078 case SERIAL_TIMEOUT
:
4084 /* Send the command in BUF to the remote machine, and read the reply
4085 into BUF. Report an error if we get an error reply. */
4088 remote_send (char *buf
,
4092 getpkt (buf
, sizeof_buf
, 0);
4095 error ("Remote failure reply: %s", buf
);
4098 /* Display a null-terminated packet on stdout, for debugging, using C
4102 print_packet (char *buf
)
4104 puts_filtered ("\"");
4105 fputstr_filtered (buf
, '"', gdb_stdout
);
4106 puts_filtered ("\"");
4112 return putpkt_binary (buf
, strlen (buf
));
4115 /* Send a packet to the remote machine, with error checking. The data
4116 of the packet is in BUF. The string in BUF can be at most (rs->remote_packet_size) - 5
4117 to account for the $, # and checksum, and for a possible /0 if we are
4118 debugging (remote_debug) and want to print the sent packet as a string */
4121 putpkt_binary (char *buf
, int cnt
)
4123 struct remote_state
*rs
= get_remote_state ();
4125 unsigned char csum
= 0;
4126 char *buf2
= alloca (cnt
+ 6);
4127 long sizeof_junkbuf
= (rs
->remote_packet_size
);
4128 char *junkbuf
= alloca (sizeof_junkbuf
);
4134 /* Copy the packet into buffer BUF2, encapsulating it
4135 and giving it a checksum. */
4140 for (i
= 0; i
< cnt
; i
++)
4146 *p
++ = tohex ((csum
>> 4) & 0xf);
4147 *p
++ = tohex (csum
& 0xf);
4149 /* Send it over and over until we get a positive ack. */
4153 int started_error_output
= 0;
4158 fprintf_unfiltered (gdb_stdlog
, "Sending packet: ");
4159 fputstrn_unfiltered (buf2
, p
- buf2
, 0, gdb_stdlog
);
4160 fprintf_unfiltered (gdb_stdlog
, "...");
4161 gdb_flush (gdb_stdlog
);
4163 if (serial_write (remote_desc
, buf2
, p
- buf2
))
4164 perror_with_name ("putpkt: write failed");
4166 /* read until either a timeout occurs (-2) or '+' is read */
4169 ch
= readchar (remote_timeout
);
4177 case SERIAL_TIMEOUT
:
4179 if (started_error_output
)
4181 putchar_unfiltered ('\n');
4182 started_error_output
= 0;
4191 fprintf_unfiltered (gdb_stdlog
, "Ack\n");
4195 fprintf_unfiltered (gdb_stdlog
, "Nak\n");
4196 case SERIAL_TIMEOUT
:
4200 break; /* Retransmit buffer */
4204 fprintf_unfiltered (gdb_stdlog
, "Packet instead of Ack, ignoring it\n");
4205 /* It's probably an old response, and we're out of sync.
4206 Just gobble up the packet and ignore it. */
4207 read_frame (junkbuf
, sizeof_junkbuf
);
4208 continue; /* Now, go look for + */
4213 if (!started_error_output
)
4215 started_error_output
= 1;
4216 fprintf_unfiltered (gdb_stdlog
, "putpkt: Junk: ");
4218 fputc_unfiltered (ch
& 0177, gdb_stdlog
);
4222 break; /* Here to retransmit */
4226 /* This is wrong. If doing a long backtrace, the user should be
4227 able to get out next time we call QUIT, without anything as
4228 violent as interrupt_query. If we want to provide a way out of
4229 here without getting to the next QUIT, it should be based on
4230 hitting ^C twice as in remote_wait. */
4240 static int remote_cisco_mode
;
4242 /* Come here after finding the start of the frame. Collect the rest
4243 into BUF, verifying the checksum, length, and handling run-length
4244 compression. No more than sizeof_buf-1 characters are read so that
4245 the buffer can be NUL terminated.
4247 Returns -1 on error, number of characters in buffer (ignoring the
4248 trailing NULL) on success. (could be extended to return one of the
4249 SERIAL status indications). */
4252 read_frame (char *buf
,
4264 /* ASSERT (bc < sizeof_buf - 1) - space for trailing NUL */
4265 c
= readchar (remote_timeout
);
4268 case SERIAL_TIMEOUT
:
4270 fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog
);
4274 fputs_filtered ("Saw new packet start in middle of old one\n",
4276 return -1; /* Start a new packet, count retries */
4279 unsigned char pktcsum
;
4285 check_0
= readchar (remote_timeout
);
4287 check_1
= readchar (remote_timeout
);
4289 if (check_0
== SERIAL_TIMEOUT
|| check_1
== SERIAL_TIMEOUT
)
4292 fputs_filtered ("Timeout in checksum, retrying\n", gdb_stdlog
);
4295 else if (check_0
< 0 || check_1
< 0)
4298 fputs_filtered ("Communication error in checksum\n", gdb_stdlog
);
4302 pktcsum
= (fromhex (check_0
) << 4) | fromhex (check_1
);
4303 if (csum
== pktcsum
)
4308 fprintf_filtered (gdb_stdlog
,
4309 "Bad checksum, sentsum=0x%x, csum=0x%x, buf=",
4311 fputs_filtered (buf
, gdb_stdlog
);
4312 fputs_filtered ("\n", gdb_stdlog
);
4314 /* Number of characters in buffer ignoring trailing
4318 case '*': /* Run length encoding */
4323 if (remote_cisco_mode
== 0)
4325 c
= readchar (remote_timeout
);
4327 repeat
= c
- ' ' + 3; /* Compute repeat count */
4331 /* Cisco's run-length encoding variant uses two
4332 hex chars to represent the repeat count. */
4334 c
= readchar (remote_timeout
);
4336 repeat
= fromhex (c
) << 4;
4337 c
= readchar (remote_timeout
);
4339 repeat
+= fromhex (c
);
4342 /* The character before ``*'' is repeated. */
4344 if (repeat
> 0 && repeat
<= 255
4346 && bc
+ repeat
- 1 < sizeof_buf
- 1)
4348 memset (&buf
[bc
], buf
[bc
- 1], repeat
);
4354 printf_filtered ("Repeat count %d too large for buffer: ", repeat
);
4355 puts_filtered (buf
);
4356 puts_filtered ("\n");
4360 if (bc
< sizeof_buf
- 1)
4368 puts_filtered ("Remote packet too long: ");
4369 puts_filtered (buf
);
4370 puts_filtered ("\n");
4377 /* Read a packet from the remote machine, with error checking, and
4378 store it in BUF. If FOREVER, wait forever rather than timing out;
4379 this is used (in synchronous mode) to wait for a target that is is
4380 executing user code to stop. */
4381 /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we
4382 don't have to change all the calls to getpkt to deal with the
4383 return value, because at the moment I don't know what the right
4384 thing to do it for those. */
4392 timed_out
= getpkt_sane (buf
, sizeof_buf
, forever
);
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. If FOREVER == 0, this function is
4400 allowed to time out gracefully and return an indication of this to
4403 getpkt_sane (char *buf
,
4412 strcpy (buf
, "timeout");
4416 timeout
= watchdog
> 0 ? watchdog
: -1;
4420 timeout
= remote_timeout
;
4424 for (tries
= 1; tries
<= MAX_TRIES
; tries
++)
4426 /* This can loop forever if the remote side sends us characters
4427 continuously, but if it pauses, we'll get a zero from readchar
4428 because of timeout. Then we'll count that as a retry. */
4430 /* Note that we will only wait forever prior to the start of a packet.
4431 After that, we expect characters to arrive at a brisk pace. They
4432 should show up within remote_timeout intervals. */
4436 c
= readchar (timeout
);
4438 if (c
== SERIAL_TIMEOUT
)
4440 if (forever
) /* Watchdog went off? Kill the target. */
4443 target_mourn_inferior ();
4444 error ("Watchdog has expired. Target detached.\n");
4447 fputs_filtered ("Timed out.\n", gdb_stdlog
);
4453 /* We've found the start of a packet, now collect the data. */
4455 val
= read_frame (buf
, sizeof_buf
);
4461 fprintf_unfiltered (gdb_stdlog
, "Packet received: ");
4462 fputstr_unfiltered (buf
, 0, gdb_stdlog
);
4463 fprintf_unfiltered (gdb_stdlog
, "\n");
4465 serial_write (remote_desc
, "+", 1);
4469 /* Try the whole thing again. */
4471 serial_write (remote_desc
, "-", 1);
4474 /* We have tried hard enough, and just can't receive the packet. Give up. */
4476 printf_unfiltered ("Ignoring packet error, continuing...\n");
4477 serial_write (remote_desc
, "+", 1);
4484 /* For some mysterious reason, wait_for_inferior calls kill instead of
4485 mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */
4489 target_mourn_inferior ();
4493 /* Use catch_errors so the user can quit from gdb even when we aren't on
4494 speaking terms with the remote system. */
4495 catch_errors ((catch_errors_ftype
*) putpkt
, "k", "", RETURN_MASK_ERROR
);
4497 /* Don't wait for it to die. I'm not really sure it matters whether
4498 we do or not. For the existing stubs, kill is a noop. */
4499 target_mourn_inferior ();
4502 /* Async version of remote_kill. */
4504 remote_async_kill (void)
4506 /* Unregister the file descriptor from the event loop. */
4507 if (target_is_async_p ())
4508 serial_async (remote_desc
, NULL
, 0);
4510 /* For some mysterious reason, wait_for_inferior calls kill instead of
4511 mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */
4515 target_mourn_inferior ();
4519 /* Use catch_errors so the user can quit from gdb even when we aren't on
4520 speaking terms with the remote system. */
4521 catch_errors ((catch_errors_ftype
*) putpkt
, "k", "", RETURN_MASK_ERROR
);
4523 /* Don't wait for it to die. I'm not really sure it matters whether
4524 we do or not. For the existing stubs, kill is a noop. */
4525 target_mourn_inferior ();
4531 remote_mourn_1 (&remote_ops
);
4535 remote_async_mourn (void)
4537 remote_mourn_1 (&remote_async_ops
);
4541 extended_remote_mourn (void)
4543 /* We do _not_ want to mourn the target like this; this will
4544 remove the extended remote target from the target stack,
4545 and the next time the user says "run" it'll fail.
4547 FIXME: What is the right thing to do here? */
4549 remote_mourn_1 (&extended_remote_ops
);
4553 /* Worker function for remote_mourn. */
4555 remote_mourn_1 (struct target_ops
*target
)
4557 unpush_target (target
);
4558 generic_mourn_inferior ();
4561 /* In the extended protocol we want to be able to do things like
4562 "run" and have them basically work as expected. So we need
4563 a special create_inferior function.
4565 FIXME: One day add support for changing the exec file
4566 we're debugging, arguments and an environment. */
4569 extended_remote_create_inferior (char *exec_file
, char *args
, char **env
)
4571 /* Rip out the breakpoints; we'll reinsert them after restarting
4572 the remote server. */
4573 remove_breakpoints ();
4575 /* Now restart the remote server. */
4576 extended_remote_restart ();
4578 /* Now put the breakpoints back in. This way we're safe if the
4579 restart function works via a unix fork on the remote side. */
4580 insert_breakpoints ();
4582 /* Clean up from the last time we were running. */
4583 clear_proceed_status ();
4585 /* Let the remote process run. */
4586 proceed (-1, TARGET_SIGNAL_0
, 0);
4589 /* Async version of extended_remote_create_inferior. */
4591 extended_remote_async_create_inferior (char *exec_file
, char *args
, char **env
)
4593 /* Rip out the breakpoints; we'll reinsert them after restarting
4594 the remote server. */
4595 remove_breakpoints ();
4597 /* If running asynchronously, register the target file descriptor
4598 with the event loop. */
4599 if (event_loop_p
&& target_can_async_p ())
4600 target_async (inferior_event_handler
, 0);
4602 /* Now restart the remote server. */
4603 extended_remote_restart ();
4605 /* Now put the breakpoints back in. This way we're safe if the
4606 restart function works via a unix fork on the remote side. */
4607 insert_breakpoints ();
4609 /* Clean up from the last time we were running. */
4610 clear_proceed_status ();
4612 /* Let the remote process run. */
4613 proceed (-1, TARGET_SIGNAL_0
, 0);
4617 /* On some machines, e.g. 68k, we may use a different breakpoint instruction
4618 than other targets; in those use REMOTE_BREAKPOINT instead of just
4619 BREAKPOINT. Also, bi-endian targets may define LITTLE_REMOTE_BREAKPOINT
4620 and BIG_REMOTE_BREAKPOINT. If none of these are defined, we just call
4621 the standard routines that are in mem-break.c. */
4623 /* FIXME, these ought to be done in a more dynamic fashion. For instance,
4624 the choice of breakpoint instruction affects target program design and
4625 vice versa, and by making it user-tweakable, the special code here
4626 goes away and we need fewer special GDB configurations. */
4628 #if defined (LITTLE_REMOTE_BREAKPOINT) && defined (BIG_REMOTE_BREAKPOINT) && !defined(REMOTE_BREAKPOINT)
4629 #define REMOTE_BREAKPOINT
4632 #ifdef REMOTE_BREAKPOINT
4634 /* If the target isn't bi-endian, just pretend it is. */
4635 #if !defined (LITTLE_REMOTE_BREAKPOINT) && !defined (BIG_REMOTE_BREAKPOINT)
4636 #define LITTLE_REMOTE_BREAKPOINT REMOTE_BREAKPOINT
4637 #define BIG_REMOTE_BREAKPOINT REMOTE_BREAKPOINT
4640 static unsigned char big_break_insn
[] = BIG_REMOTE_BREAKPOINT
;
4641 static unsigned char little_break_insn
[] = LITTLE_REMOTE_BREAKPOINT
;
4643 #endif /* REMOTE_BREAKPOINT */
4645 /* Insert a breakpoint on targets that don't have any better breakpoint
4646 support. We read the contents of the target location and stash it,
4647 then overwrite it with a breakpoint instruction. ADDR is the target
4648 location in the target machine. CONTENTS_CACHE is a pointer to
4649 memory allocated for saving the target contents. It is guaranteed
4650 by the caller to be long enough to save sizeof BREAKPOINT bytes (this
4651 is accomplished via BREAKPOINT_MAX). */
4654 remote_insert_breakpoint (CORE_ADDR addr
, char *contents_cache
)
4656 struct remote_state
*rs
= get_remote_state ();
4657 #ifdef REMOTE_BREAKPOINT
4662 /* Try the "Z" s/w breakpoint packet if it is not already disabled.
4663 If it succeeds, then set the support to PACKET_ENABLE. If it
4664 fails, and the user has explicitly requested the Z support then
4665 report an error, otherwise, mark it disabled and go on. */
4667 if (remote_protocol_Z
[Z_PACKET_SOFTWARE_BP
].support
!= PACKET_DISABLE
)
4669 char *buf
= alloca (rs
->remote_packet_size
);
4672 addr
= remote_address_masked (addr
);
4676 p
+= hexnumstr (p
, (ULONGEST
) addr
);
4677 BREAKPOINT_FROM_PC (&addr
, &bp_size
);
4678 sprintf (p
, ",%d", bp_size
);
4681 getpkt (buf
, (rs
->remote_packet_size
), 0);
4683 switch (packet_ok (buf
, &remote_protocol_Z
[Z_PACKET_SOFTWARE_BP
]))
4689 case PACKET_UNKNOWN
:
4694 #ifdef REMOTE_BREAKPOINT
4695 val
= target_read_memory (addr
, contents_cache
, sizeof big_break_insn
);
4699 if (TARGET_BYTE_ORDER
== BFD_ENDIAN_BIG
)
4700 val
= target_write_memory (addr
, (char *) big_break_insn
,
4701 sizeof big_break_insn
);
4703 val
= target_write_memory (addr
, (char *) little_break_insn
,
4704 sizeof little_break_insn
);
4709 return memory_insert_breakpoint (addr
, contents_cache
);
4710 #endif /* REMOTE_BREAKPOINT */
4714 remote_remove_breakpoint (CORE_ADDR addr
, char *contents_cache
)
4716 struct remote_state
*rs
= get_remote_state ();
4719 if (remote_protocol_Z
[Z_PACKET_SOFTWARE_BP
].support
!= PACKET_DISABLE
)
4721 char *buf
= alloca (rs
->remote_packet_size
);
4728 addr
= remote_address_masked (addr
);
4729 p
+= hexnumstr (p
, (ULONGEST
) addr
);
4730 BREAKPOINT_FROM_PC (&addr
, &bp_size
);
4731 sprintf (p
, ",%d", bp_size
);
4734 getpkt (buf
, (rs
->remote_packet_size
), 0);
4736 return (buf
[0] == 'E');
4739 #ifdef REMOTE_BREAKPOINT
4740 return target_write_memory (addr
, contents_cache
, sizeof big_break_insn
);
4742 return memory_remove_breakpoint (addr
, contents_cache
);
4743 #endif /* REMOTE_BREAKPOINT */
4747 watchpoint_to_Z_packet (int type
)
4761 internal_error (__FILE__
, __LINE__
,
4762 "hw_bp_to_z: bad watchpoint type %d", type
);
4766 /* FIXME: This function should be static and a member of the remote
4770 remote_insert_watchpoint (CORE_ADDR addr
, int len
, int type
)
4772 struct remote_state
*rs
= get_remote_state ();
4773 char *buf
= alloca (rs
->remote_packet_size
);
4775 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
4777 if (remote_protocol_Z
[packet
].support
== PACKET_DISABLE
)
4778 error ("Can't set hardware watchpoints without the '%s' (%s) packet\n",
4779 remote_protocol_Z
[packet
].name
,
4780 remote_protocol_Z
[packet
].title
);
4782 sprintf (buf
, "Z%x,", packet
);
4783 p
= strchr (buf
, '\0');
4784 addr
= remote_address_masked (addr
);
4785 p
+= hexnumstr (p
, (ULONGEST
) addr
);
4786 sprintf (p
, ",%x", len
);
4789 getpkt (buf
, (rs
->remote_packet_size
), 0);
4791 switch (packet_ok (buf
, &remote_protocol_Z
[packet
]))
4794 case PACKET_UNKNOWN
:
4799 internal_error (__FILE__
, __LINE__
,
4800 "remote_insert_watchpoint: reached end of function");
4803 /* FIXME: This function should be static and a member of the remote
4807 remote_remove_watchpoint (CORE_ADDR addr
, int len
, int type
)
4809 struct remote_state
*rs
= get_remote_state ();
4810 char *buf
= alloca (rs
->remote_packet_size
);
4812 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
4814 if (remote_protocol_Z
[packet
].support
== PACKET_DISABLE
)
4815 error ("Can't clear hardware watchpoints without the '%s' (%s) packet\n",
4816 remote_protocol_Z
[packet
].name
,
4817 remote_protocol_Z
[packet
].title
);
4819 sprintf (buf
, "z%x,", packet
);
4820 p
= strchr (buf
, '\0');
4821 addr
= remote_address_masked (addr
);
4822 p
+= hexnumstr (p
, (ULONGEST
) addr
);
4823 sprintf (p
, ",%x", len
);
4825 getpkt (buf
, (rs
->remote_packet_size
), 0);
4827 switch (packet_ok (buf
, &remote_protocol_Z
[packet
]))
4830 case PACKET_UNKNOWN
:
4835 internal_error (__FILE__
, __LINE__
,
4836 "remote_remove_watchpoint: reached end of function");
4839 /* FIXME: This function should be static and a member of the remote
4843 remote_insert_hw_breakpoint (CORE_ADDR addr
, int len
)
4845 struct remote_state
*rs
= get_remote_state ();
4846 char *buf
= alloca (rs
->remote_packet_size
);
4849 if (remote_protocol_Z
[Z_PACKET_HARDWARE_BP
].support
== PACKET_DISABLE
)
4850 error ("Can't set hardware breakpoint without the '%s' (%s) packet\n",
4851 remote_protocol_Z
[Z_PACKET_HARDWARE_BP
].name
,
4852 remote_protocol_Z
[Z_PACKET_HARDWARE_BP
].title
);
4858 addr
= remote_address_masked (addr
);
4859 p
+= hexnumstr (p
, (ULONGEST
) addr
);
4860 sprintf (p
, ",%x", len
);
4863 getpkt (buf
, (rs
->remote_packet_size
), 0);
4865 switch (packet_ok (buf
, &remote_protocol_Z
[Z_PACKET_HARDWARE_BP
]))
4868 case PACKET_UNKNOWN
:
4873 internal_error (__FILE__
, __LINE__
,
4874 "remote_remove_watchpoint: reached end of function");
4877 /* FIXME: This function should be static and a member of the remote
4881 remote_remove_hw_breakpoint (CORE_ADDR addr
, int len
)
4883 struct remote_state
*rs
= get_remote_state ();
4884 char *buf
= alloca (rs
->remote_packet_size
);
4887 if (remote_protocol_Z
[Z_PACKET_HARDWARE_BP
].support
== PACKET_DISABLE
)
4888 error ("Can't clear hardware breakpoint without the '%s' (%s) packet\n",
4889 remote_protocol_Z
[Z_PACKET_HARDWARE_BP
].name
,
4890 remote_protocol_Z
[Z_PACKET_HARDWARE_BP
].title
);
4896 addr
= remote_address_masked (addr
);
4897 p
+= hexnumstr (p
, (ULONGEST
) addr
);
4898 sprintf (p
, ",%x", len
);
4901 getpkt (buf
, (rs
->remote_packet_size
), 0);
4903 switch (packet_ok (buf
, &remote_protocol_Z
[Z_PACKET_HARDWARE_BP
]))
4906 case PACKET_UNKNOWN
:
4911 internal_error (__FILE__
, __LINE__
,
4912 "remote_remove_watchpoint: reached end of function");
4915 /* Some targets are only capable of doing downloads, and afterwards
4916 they switch to the remote serial protocol. This function provides
4917 a clean way to get from the download target to the remote target.
4918 It's basically just a wrapper so that we don't have to expose any
4919 of the internal workings of remote.c.
4921 Prior to calling this routine, you should shutdown the current
4922 target code, else you will get the "A program is being debugged
4923 already..." message. Usually a call to pop_target() suffices. */
4926 push_remote_target (char *name
, int from_tty
)
4928 printf_filtered ("Switching to remote protocol\n");
4929 remote_open (name
, from_tty
);
4932 /* Other targets want to use the entire remote serial module but with
4933 certain remote_ops overridden. */
4936 open_remote_target (char *name
, int from_tty
, struct target_ops
*target
,
4939 printf_filtered ("Selecting the %sremote protocol\n",
4940 (extended_p
? "extended-" : ""));
4941 remote_open_1 (name
, from_tty
, target
, extended_p
);
4944 /* Table used by the crc32 function to calcuate the checksum. */
4946 static unsigned long crc32_table
[256] =
4949 static unsigned long
4950 crc32 (unsigned char *buf
, int len
, unsigned int crc
)
4952 if (!crc32_table
[1])
4954 /* Initialize the CRC table and the decoding table. */
4958 for (i
= 0; i
< 256; i
++)
4960 for (c
= i
<< 24, j
= 8; j
> 0; --j
)
4961 c
= c
& 0x80000000 ? (c
<< 1) ^ 0x04c11db7 : (c
<< 1);
4968 crc
= (crc
<< 8) ^ crc32_table
[((crc
>> 24) ^ *buf
) & 255];
4974 /* compare-sections command
4976 With no arguments, compares each loadable section in the exec bfd
4977 with the same memory range on the target, and reports mismatches.
4978 Useful for verifying the image on the target against the exec file.
4979 Depends on the target understanding the new "qCRC:" request. */
4981 /* FIXME: cagney/1999-10-26: This command should be broken down into a
4982 target method (target verify memory) and generic version of the
4983 actual command. This will allow other high-level code (especially
4984 generic_load()) to make use of this target functionality. */
4987 compare_sections_command (char *args
, int from_tty
)
4989 struct remote_state
*rs
= get_remote_state ();
4991 unsigned long host_crc
, target_crc
;
4992 extern bfd
*exec_bfd
;
4993 struct cleanup
*old_chain
;
4996 const char *sectname
;
4997 char *buf
= alloca (rs
->remote_packet_size
);
5004 error ("command cannot be used without an exec file");
5005 if (!current_target
.to_shortname
||
5006 strcmp (current_target
.to_shortname
, "remote") != 0)
5007 error ("command can only be used with remote target");
5009 for (s
= exec_bfd
->sections
; s
; s
= s
->next
)
5011 if (!(s
->flags
& SEC_LOAD
))
5012 continue; /* skip non-loadable section */
5014 size
= bfd_get_section_size_before_reloc (s
);
5016 continue; /* skip zero-length section */
5018 sectname
= bfd_get_section_name (exec_bfd
, s
);
5019 if (args
&& strcmp (args
, sectname
) != 0)
5020 continue; /* not the section selected by user */
5022 matched
= 1; /* do this section */
5024 /* FIXME: assumes lma can fit into long */
5025 sprintf (buf
, "qCRC:%lx,%lx", (long) lma
, (long) size
);
5028 /* be clever; compute the host_crc before waiting for target reply */
5029 sectdata
= xmalloc (size
);
5030 old_chain
= make_cleanup (xfree
, sectdata
);
5031 bfd_get_section_contents (exec_bfd
, s
, sectdata
, 0, size
);
5032 host_crc
= crc32 ((unsigned char *) sectdata
, size
, 0xffffffff);
5034 getpkt (buf
, (rs
->remote_packet_size
), 0);
5036 error ("target memory fault, section %s, range 0x%s -- 0x%s",
5037 sectname
, paddr (lma
), paddr (lma
+ size
));
5039 error ("remote target does not support this operation");
5041 for (target_crc
= 0, tmp
= &buf
[1]; *tmp
; tmp
++)
5042 target_crc
= target_crc
* 16 + fromhex (*tmp
);
5044 printf_filtered ("Section %s, range 0x%s -- 0x%s: ",
5045 sectname
, paddr (lma
), paddr (lma
+ size
));
5046 if (host_crc
== target_crc
)
5047 printf_filtered ("matched.\n");
5050 printf_filtered ("MIS-MATCHED!\n");
5054 do_cleanups (old_chain
);
5057 warning ("One or more sections of the remote executable does not match\n\
5058 the loaded file\n");
5059 if (args
&& !matched
)
5060 printf_filtered ("No loaded section named '%s'.\n", args
);
5064 remote_query (int query_type
, char *buf
, char *outbuf
, int *bufsiz
)
5066 struct remote_state
*rs
= get_remote_state ();
5068 char *buf2
= alloca (rs
->remote_packet_size
);
5069 char *p2
= &buf2
[0];
5072 error ("null pointer to remote bufer size specified");
5074 /* minimum outbuf size is (rs->remote_packet_size) - if bufsiz is not large enough let
5075 the caller know and return what the minimum size is */
5076 /* Note: a zero bufsiz can be used to query the minimum buffer size */
5077 if (*bufsiz
< (rs
->remote_packet_size
))
5079 *bufsiz
= (rs
->remote_packet_size
);
5083 /* except for querying the minimum buffer size, target must be open */
5085 error ("remote query is only available after target open");
5087 /* we only take uppercase letters as query types, at least for now */
5088 if ((query_type
< 'A') || (query_type
> 'Z'))
5089 error ("invalid remote query type");
5092 error ("null remote query specified");
5095 error ("remote query requires a buffer to receive data");
5102 /* we used one buffer char for the remote protocol q command and another
5103 for the query type. As the remote protocol encapsulation uses 4 chars
5104 plus one extra in case we are debugging (remote_debug),
5105 we have PBUFZIZ - 7 left to pack the query string */
5107 while (buf
[i
] && (i
< ((rs
->remote_packet_size
) - 8)))
5109 /* bad caller may have sent forbidden characters */
5110 if ((!isprint (buf
[i
])) || (buf
[i
] == '$') || (buf
[i
] == '#'))
5111 error ("illegal characters in query string");
5119 error ("query larger than available buffer");
5125 getpkt (outbuf
, *bufsiz
, 0);
5131 remote_rcmd (char *command
,
5132 struct ui_file
*outbuf
)
5134 struct remote_state
*rs
= get_remote_state ();
5136 char *buf
= alloca (rs
->remote_packet_size
);
5140 error ("remote rcmd is only available after target open");
5142 /* Send a NULL command across as an empty command */
5143 if (command
== NULL
)
5146 /* The query prefix */
5147 strcpy (buf
, "qRcmd,");
5148 p
= strchr (buf
, '\0');
5150 if ((strlen (buf
) + strlen (command
) * 2 + 8/*misc*/) > (rs
->remote_packet_size
))
5151 error ("\"monitor\" command ``%s'' is too long\n", command
);
5153 /* Encode the actual command */
5154 bin2hex (command
, p
, 0);
5156 if (putpkt (buf
) < 0)
5157 error ("Communication problem with target\n");
5159 /* get/display the response */
5162 /* XXX - see also tracepoint.c:remote_get_noisy_reply() */
5164 getpkt (buf
, (rs
->remote_packet_size
), 0);
5166 error ("Target does not support this command\n");
5167 if (buf
[0] == 'O' && buf
[1] != 'K')
5169 remote_console_output (buf
+ 1); /* 'O' message from stub */
5172 if (strcmp (buf
, "OK") == 0)
5174 if (strlen (buf
) == 3 && buf
[0] == 'E'
5175 && isdigit (buf
[1]) && isdigit (buf
[2]))
5177 error ("Protocol error with Rcmd");
5179 for (p
= buf
; p
[0] != '\0' && p
[1] != '\0'; p
+= 2)
5181 char c
= (fromhex (p
[0]) << 4) + fromhex (p
[1]);
5182 fputc_unfiltered (c
, outbuf
);
5189 packet_command (char *args
, int from_tty
)
5191 struct remote_state
*rs
= get_remote_state ();
5192 char *buf
= alloca (rs
->remote_packet_size
);
5195 error ("command can only be used with remote target");
5198 error ("remote-packet command requires packet text as argument");
5200 puts_filtered ("sending: ");
5201 print_packet (args
);
5202 puts_filtered ("\n");
5205 getpkt (buf
, (rs
->remote_packet_size
), 0);
5206 puts_filtered ("received: ");
5208 puts_filtered ("\n");
5212 /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------------- */
5214 static void display_thread_info (struct gdb_ext_thread_info
*info
);
5216 static void threadset_test_cmd (char *cmd
, int tty
);
5218 static void threadalive_test (char *cmd
, int tty
);
5220 static void threadlist_test_cmd (char *cmd
, int tty
);
5222 int get_and_display_threadinfo (threadref
* ref
);
5224 static void threadinfo_test_cmd (char *cmd
, int tty
);
5226 static int thread_display_step (threadref
* ref
, void *context
);
5228 static void threadlist_update_test_cmd (char *cmd
, int tty
);
5230 static void init_remote_threadtests (void);
5232 #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid */
5235 threadset_test_cmd (char *cmd
, int tty
)
5237 int sample_thread
= SAMPLE_THREAD
;
5239 printf_filtered ("Remote threadset test\n");
5240 set_thread (sample_thread
, 1);
5245 threadalive_test (char *cmd
, int tty
)
5247 int sample_thread
= SAMPLE_THREAD
;
5249 if (remote_thread_alive (pid_to_ptid (sample_thread
)))
5250 printf_filtered ("PASS: Thread alive test\n");
5252 printf_filtered ("FAIL: Thread alive test\n");
5255 void output_threadid (char *title
, threadref
* ref
);
5258 output_threadid (char *title
, threadref
*ref
)
5262 pack_threadid (&hexid
[0], ref
); /* Convert threead id into hex */
5264 printf_filtered ("%s %s\n", title
, (&hexid
[0]));
5268 threadlist_test_cmd (char *cmd
, int tty
)
5271 threadref nextthread
;
5272 int done
, result_count
;
5273 threadref threadlist
[3];
5275 printf_filtered ("Remote Threadlist test\n");
5276 if (!remote_get_threadlist (startflag
, &nextthread
, 3, &done
,
5277 &result_count
, &threadlist
[0]))
5278 printf_filtered ("FAIL: threadlist test\n");
5281 threadref
*scan
= threadlist
;
5282 threadref
*limit
= scan
+ result_count
;
5284 while (scan
< limit
)
5285 output_threadid (" thread ", scan
++);
5290 display_thread_info (struct gdb_ext_thread_info
*info
)
5292 output_threadid ("Threadid: ", &info
->threadid
);
5293 printf_filtered ("Name: %s\n ", info
->shortname
);
5294 printf_filtered ("State: %s\n", info
->display
);
5295 printf_filtered ("other: %s\n\n", info
->more_display
);
5299 get_and_display_threadinfo (threadref
*ref
)
5303 struct gdb_ext_thread_info threadinfo
;
5305 set
= TAG_THREADID
| TAG_EXISTS
| TAG_THREADNAME
5306 | TAG_MOREDISPLAY
| TAG_DISPLAY
;
5307 if (0 != (result
= remote_get_threadinfo (ref
, set
, &threadinfo
)))
5308 display_thread_info (&threadinfo
);
5313 threadinfo_test_cmd (char *cmd
, int tty
)
5315 int athread
= SAMPLE_THREAD
;
5319 int_to_threadref (&thread
, athread
);
5320 printf_filtered ("Remote Threadinfo test\n");
5321 if (!get_and_display_threadinfo (&thread
))
5322 printf_filtered ("FAIL cannot get thread info\n");
5326 thread_display_step (threadref
*ref
, void *context
)
5328 /* output_threadid(" threadstep ",ref); *//* simple test */
5329 return get_and_display_threadinfo (ref
);
5333 threadlist_update_test_cmd (char *cmd
, int tty
)
5335 printf_filtered ("Remote Threadlist update test\n");
5336 remote_threadlist_iterator (thread_display_step
, 0, CRAZY_MAX_THREADS
);
5340 init_remote_threadtests (void)
5342 add_com ("tlist", class_obscure
, threadlist_test_cmd
,
5343 "Fetch and print the remote list of thread identifiers, one pkt only");
5344 add_com ("tinfo", class_obscure
, threadinfo_test_cmd
,
5345 "Fetch and display info about one thread");
5346 add_com ("tset", class_obscure
, threadset_test_cmd
,
5347 "Test setting to a different thread");
5348 add_com ("tupd", class_obscure
, threadlist_update_test_cmd
,
5349 "Iterate through updating all remote thread info");
5350 add_com ("talive", class_obscure
, threadalive_test
,
5351 " Remote thread alive test ");
5356 /* Convert a thread ID to a string. Returns the string in a static
5360 remote_pid_to_str (ptid_t ptid
)
5362 static char buf
[30];
5364 sprintf (buf
, "Thread %d", PIDGET (ptid
));
5369 init_remote_ops (void)
5371 remote_ops
.to_shortname
= "remote";
5372 remote_ops
.to_longname
= "Remote serial target in gdb-specific protocol";
5374 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
5375 Specify the serial device it is connected to\n\
5376 (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).";
5377 remote_ops
.to_open
= remote_open
;
5378 remote_ops
.to_close
= remote_close
;
5379 remote_ops
.to_detach
= remote_detach
;
5380 remote_ops
.to_resume
= remote_resume
;
5381 remote_ops
.to_wait
= remote_wait
;
5382 remote_ops
.to_fetch_registers
= remote_fetch_registers
;
5383 remote_ops
.to_store_registers
= remote_store_registers
;
5384 remote_ops
.to_prepare_to_store
= remote_prepare_to_store
;
5385 remote_ops
.to_xfer_memory
= remote_xfer_memory
;
5386 remote_ops
.to_files_info
= remote_files_info
;
5387 remote_ops
.to_insert_breakpoint
= remote_insert_breakpoint
;
5388 remote_ops
.to_remove_breakpoint
= remote_remove_breakpoint
;
5389 remote_ops
.to_kill
= remote_kill
;
5390 remote_ops
.to_load
= generic_load
;
5391 remote_ops
.to_mourn_inferior
= remote_mourn
;
5392 remote_ops
.to_thread_alive
= remote_thread_alive
;
5393 remote_ops
.to_find_new_threads
= remote_threads_info
;
5394 remote_ops
.to_pid_to_str
= remote_pid_to_str
;
5395 remote_ops
.to_extra_thread_info
= remote_threads_extra_info
;
5396 remote_ops
.to_stop
= remote_stop
;
5397 remote_ops
.to_query
= remote_query
;
5398 remote_ops
.to_rcmd
= remote_rcmd
;
5399 remote_ops
.to_stratum
= process_stratum
;
5400 remote_ops
.to_has_all_memory
= 1;
5401 remote_ops
.to_has_memory
= 1;
5402 remote_ops
.to_has_stack
= 1;
5403 remote_ops
.to_has_registers
= 1;
5404 remote_ops
.to_has_execution
= 1;
5405 remote_ops
.to_has_thread_control
= tc_schedlock
; /* can lock scheduler */
5406 remote_ops
.to_magic
= OPS_MAGIC
;
5409 /* Set up the extended remote vector by making a copy of the standard
5410 remote vector and adding to it. */
5413 init_extended_remote_ops (void)
5415 extended_remote_ops
= remote_ops
;
5417 extended_remote_ops
.to_shortname
= "extended-remote";
5418 extended_remote_ops
.to_longname
=
5419 "Extended remote serial target in gdb-specific protocol";
5420 extended_remote_ops
.to_doc
=
5421 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
5422 Specify the serial device it is connected to (e.g. /dev/ttya).",
5423 extended_remote_ops
.to_open
= extended_remote_open
;
5424 extended_remote_ops
.to_create_inferior
= extended_remote_create_inferior
;
5425 extended_remote_ops
.to_mourn_inferior
= extended_remote_mourn
;
5429 * Command: info remote-process
5431 * This implements Cisco's version of the "info proc" command.
5433 * This query allows the target stub to return an arbitrary string
5434 * (or strings) giving arbitrary information about the target process.
5435 * This is optional; the target stub isn't required to implement it.
5437 * Syntax: qfProcessInfo request first string
5438 * qsProcessInfo request subsequent string
5439 * reply: 'O'<hex-encoded-string>
5440 * 'l' last reply (empty)
5444 remote_info_process (char *args
, int from_tty
)
5446 struct remote_state
*rs
= get_remote_state ();
5447 char *buf
= alloca (rs
->remote_packet_size
);
5449 if (remote_desc
== 0)
5450 error ("Command can only be used when connected to the remote target.");
5452 putpkt ("qfProcessInfo");
5453 getpkt (buf
, (rs
->remote_packet_size
), 0);
5455 return; /* Silently: target does not support this feature. */
5458 error ("info proc: target error.");
5460 while (buf
[0] == 'O') /* Capitol-O packet */
5462 remote_console_output (&buf
[1]);
5463 putpkt ("qsProcessInfo");
5464 getpkt (buf
, (rs
->remote_packet_size
), 0);
5473 remote_cisco_open (char *name
, int from_tty
)
5476 error ("To open a remote debug connection, you need to specify what \n"
5477 "device is attached to the remote system (e.g. host:port).");
5479 /* See FIXME above */
5480 wait_forever_enabled_p
= 1;
5482 target_preopen (from_tty
);
5484 unpush_target (&remote_cisco_ops
);
5486 remote_desc
= remote_serial_open (name
);
5488 perror_with_name (name
);
5491 * If a baud rate was specified on the gdb command line it will
5492 * be greater than the initial value of -1. If it is, use it otherwise
5496 baud_rate
= (baud_rate
> 0) ? baud_rate
: 9600;
5497 if (serial_setbaudrate (remote_desc
, baud_rate
))
5499 serial_close (remote_desc
);
5500 perror_with_name (name
);
5503 serial_raw (remote_desc
);
5505 /* If there is something sitting in the buffer we might take it as a
5506 response to a command, which would be bad. */
5507 serial_flush_input (remote_desc
);
5511 puts_filtered ("Remote debugging using ");
5512 puts_filtered (name
);
5513 puts_filtered ("\n");
5516 remote_cisco_mode
= 1;
5518 push_target (&remote_cisco_ops
); /* Switch to using cisco target now */
5520 init_all_packet_configs ();
5522 general_thread
= -2;
5523 continue_thread
= -2;
5525 /* Probe for ability to use "ThreadInfo" query, as required. */
5526 use_threadinfo_query
= 1;
5527 use_threadextra_query
= 1;
5529 /* Without this, some commands which require an active target (such
5530 as kill) won't work. This variable serves (at least) double duty
5531 as both the pid of the target process (if it has such), and as a
5532 flag indicating that a target is active. These functions should
5533 be split out into seperate variables, especially since GDB will
5534 someday have a notion of debugging several processes. */
5535 inferior_ptid
= pid_to_ptid (MAGIC_NULL_PID
);
5537 /* Start the remote connection; if error (0), discard this target. */
5539 if (!catch_errors (remote_start_remote_dummy
, (char *) 0,
5540 "Couldn't establish connection to remote target\n",
5549 remote_cisco_close (int quitting
)
5551 remote_cisco_mode
= 0;
5552 remote_close (quitting
);
5556 remote_cisco_mourn (void)
5558 remote_mourn_1 (&remote_cisco_ops
);
5570 /* Shared between readsocket() and readtty(). The size is arbitrary,
5571 however all targets are known to support a 400 character packet. */
5572 static char tty_input
[400];
5574 static int escape_count
;
5575 static int echo_check
;
5576 extern int quit_flag
;
5583 /* Loop until the socket doesn't have any more data */
5585 while ((data
= readchar (0)) >= 0)
5587 /* Check for the escape sequence */
5590 /* If this is the fourth escape, get out */
5591 if (++escape_count
== 4)
5596 { /* This is a '|', but not the fourth in a row.
5597 Continue without echoing it. If it isn't actually
5598 one of four in a row, it'll be echoed later. */
5605 /* Ensure any pending '|'s are flushed. */
5607 for (; escape_count
> 0; escape_count
--)
5611 if (data
== '\r') /* If this is a return character, */
5612 continue; /* - just supress it. */
5614 if (echo_check
!= -1) /* Check for echo of user input. */
5616 if (tty_input
[echo_check
] == data
)
5618 gdb_assert (echo_check
<= sizeof (tty_input
));
5619 echo_check
++; /* Character matched user input: */
5620 continue; /* Continue without echoing it. */
5622 else if ((data
== '\n') && (tty_input
[echo_check
] == '\r'))
5623 { /* End of the line (and of echo checking). */
5624 echo_check
= -1; /* No more echo supression */
5625 continue; /* Continue without echoing. */
5628 { /* Failed check for echo of user input.
5629 We now have some suppressed output to flush! */
5632 for (j
= 0; j
< echo_check
; j
++)
5633 putchar (tty_input
[j
]);
5637 putchar (data
); /* Default case: output the char. */
5640 if (data
== SERIAL_TIMEOUT
) /* Timeout returned from readchar. */
5641 return READ_MORE
; /* Try to read some more */
5643 return FATAL_ERROR
; /* Trouble, bail out */
5651 /* First, read a buffer full from the terminal */
5652 tty_bytecount
= read (fileno (stdin
), tty_input
, sizeof (tty_input
) - 1);
5653 if (tty_bytecount
== -1)
5655 perror ("readtty: read failed");
5659 /* Remove a quoted newline. */
5660 if (tty_input
[tty_bytecount
- 1] == '\n' &&
5661 tty_input
[tty_bytecount
- 2] == '\\') /* line ending in backslash */
5663 tty_input
[--tty_bytecount
] = 0; /* remove newline */
5664 tty_input
[--tty_bytecount
] = 0; /* remove backslash */
5667 /* Turn trailing newlines into returns */
5668 if (tty_input
[tty_bytecount
- 1] == '\n')
5669 tty_input
[tty_bytecount
- 1] = '\r';
5671 /* If the line consists of a ~, enter debugging mode. */
5672 if ((tty_input
[0] == '~') && (tty_bytecount
== 2))
5675 /* Make this a zero terminated string and write it out */
5676 tty_input
[tty_bytecount
] = 0;
5677 if (serial_write (remote_desc
, tty_input
, tty_bytecount
))
5679 perror_with_name ("readtty: write failed");
5689 fd_set input
; /* file descriptors for select */
5690 int tablesize
; /* max number of FDs for select */
5694 extern int escape_count
; /* global shared by readsocket */
5695 extern int echo_check
; /* ditto */
5700 tablesize
= 8 * sizeof (input
);
5704 /* Check for anything from our socket - doesn't block. Note that
5705 this must be done *before* the select as there may be
5706 buffered I/O waiting to be processed. */
5708 if ((status
= readsocket ()) == FATAL_ERROR
)
5710 error ("Debugging terminated by communications error");
5712 else if (status
!= READ_MORE
)
5717 fflush (stdout
); /* Flush output before blocking */
5719 /* Now block on more socket input or TTY input */
5722 FD_SET (fileno (stdin
), &input
);
5723 FD_SET (deprecated_serial_fd (remote_desc
), &input
);
5725 status
= select (tablesize
, &input
, 0, 0, 0);
5726 if ((status
== -1) && (errno
!= EINTR
))
5728 error ("Communications error on select %d", errno
);
5731 /* Handle Control-C typed */
5735 if ((++quit_count
) == 2)
5737 if (query ("Interrupt GDB? "))
5739 printf_filtered ("Interrupted by user.\n");
5740 throw_exception (RETURN_QUIT
);
5747 serial_send_break (remote_desc
);
5749 serial_write (remote_desc
, "\003", 1);
5754 /* Handle console input */
5756 if (FD_ISSET (fileno (stdin
), &input
))
5760 status
= readtty ();
5761 if (status
== READ_MORE
)
5764 return status
; /* telnet session ended */
5770 remote_cisco_wait (ptid_t ptid
, struct target_waitstatus
*status
)
5772 if (minitelnet () != ENTER_DEBUG
)
5774 error ("Debugging session terminated by protocol error");
5777 return remote_wait (ptid
, status
);
5781 init_remote_cisco_ops (void)
5783 remote_cisco_ops
.to_shortname
= "cisco";
5784 remote_cisco_ops
.to_longname
= "Remote serial target in cisco-specific protocol";
5785 remote_cisco_ops
.to_doc
=
5786 "Use a remote machine via TCP, using a cisco-specific protocol.\n\
5787 Specify the serial device it is connected to (e.g. host:2020).";
5788 remote_cisco_ops
.to_open
= remote_cisco_open
;
5789 remote_cisco_ops
.to_close
= remote_cisco_close
;
5790 remote_cisco_ops
.to_detach
= remote_detach
;
5791 remote_cisco_ops
.to_resume
= remote_resume
;
5792 remote_cisco_ops
.to_wait
= remote_cisco_wait
;
5793 remote_cisco_ops
.to_fetch_registers
= remote_fetch_registers
;
5794 remote_cisco_ops
.to_store_registers
= remote_store_registers
;
5795 remote_cisco_ops
.to_prepare_to_store
= remote_prepare_to_store
;
5796 remote_cisco_ops
.to_xfer_memory
= remote_xfer_memory
;
5797 remote_cisco_ops
.to_files_info
= remote_files_info
;
5798 remote_cisco_ops
.to_insert_breakpoint
= remote_insert_breakpoint
;
5799 remote_cisco_ops
.to_remove_breakpoint
= remote_remove_breakpoint
;
5800 remote_cisco_ops
.to_kill
= remote_kill
;
5801 remote_cisco_ops
.to_load
= generic_load
;
5802 remote_cisco_ops
.to_mourn_inferior
= remote_cisco_mourn
;
5803 remote_cisco_ops
.to_thread_alive
= remote_thread_alive
;
5804 remote_cisco_ops
.to_find_new_threads
= remote_threads_info
;
5805 remote_cisco_ops
.to_pid_to_str
= remote_pid_to_str
;
5806 remote_cisco_ops
.to_extra_thread_info
= remote_threads_extra_info
;
5807 remote_cisco_ops
.to_stratum
= process_stratum
;
5808 remote_cisco_ops
.to_has_all_memory
= 1;
5809 remote_cisco_ops
.to_has_memory
= 1;
5810 remote_cisco_ops
.to_has_stack
= 1;
5811 remote_cisco_ops
.to_has_registers
= 1;
5812 remote_cisco_ops
.to_has_execution
= 1;
5813 remote_cisco_ops
.to_magic
= OPS_MAGIC
;
5817 remote_can_async_p (void)
5819 /* We're async whenever the serial device is. */
5820 return (current_target
.to_async_mask_value
) && serial_can_async_p (remote_desc
);
5824 remote_is_async_p (void)
5826 /* We're async whenever the serial device is. */
5827 return (current_target
.to_async_mask_value
) && serial_is_async_p (remote_desc
);
5830 /* Pass the SERIAL event on and up to the client. One day this code
5831 will be able to delay notifying the client of an event until the
5832 point where an entire packet has been received. */
5834 static void (*async_client_callback
) (enum inferior_event_type event_type
, void *context
);
5835 static void *async_client_context
;
5836 static serial_event_ftype remote_async_serial_handler
;
5839 remote_async_serial_handler (struct serial
*scb
, void *context
)
5841 /* Don't propogate error information up to the client. Instead let
5842 the client find out about the error by querying the target. */
5843 async_client_callback (INF_REG_EVENT
, async_client_context
);
5847 remote_async (void (*callback
) (enum inferior_event_type event_type
, void *context
), void *context
)
5849 if (current_target
.to_async_mask_value
== 0)
5850 internal_error (__FILE__
, __LINE__
,
5851 "Calling remote_async when async is masked");
5853 if (callback
!= NULL
)
5855 serial_async (remote_desc
, remote_async_serial_handler
, NULL
);
5856 async_client_callback
= callback
;
5857 async_client_context
= context
;
5860 serial_async (remote_desc
, NULL
, NULL
);
5863 /* Target async and target extended-async.
5865 This are temporary targets, until it is all tested. Eventually
5866 async support will be incorporated int the usual 'remote'
5870 init_remote_async_ops (void)
5872 remote_async_ops
.to_shortname
= "async";
5873 remote_async_ops
.to_longname
= "Remote serial target in async version of the gdb-specific protocol";
5874 remote_async_ops
.to_doc
=
5875 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
5876 Specify the serial device it is connected to (e.g. /dev/ttya).";
5877 remote_async_ops
.to_open
= remote_async_open
;
5878 remote_async_ops
.to_close
= remote_close
;
5879 remote_async_ops
.to_detach
= remote_async_detach
;
5880 remote_async_ops
.to_resume
= remote_async_resume
;
5881 remote_async_ops
.to_wait
= remote_async_wait
;
5882 remote_async_ops
.to_fetch_registers
= remote_fetch_registers
;
5883 remote_async_ops
.to_store_registers
= remote_store_registers
;
5884 remote_async_ops
.to_prepare_to_store
= remote_prepare_to_store
;
5885 remote_async_ops
.to_xfer_memory
= remote_xfer_memory
;
5886 remote_async_ops
.to_files_info
= remote_files_info
;
5887 remote_async_ops
.to_insert_breakpoint
= remote_insert_breakpoint
;
5888 remote_async_ops
.to_remove_breakpoint
= remote_remove_breakpoint
;
5889 remote_async_ops
.to_terminal_inferior
= remote_async_terminal_inferior
;
5890 remote_async_ops
.to_terminal_ours
= remote_async_terminal_ours
;
5891 remote_async_ops
.to_kill
= remote_async_kill
;
5892 remote_async_ops
.to_load
= generic_load
;
5893 remote_async_ops
.to_mourn_inferior
= remote_async_mourn
;
5894 remote_async_ops
.to_thread_alive
= remote_thread_alive
;
5895 remote_async_ops
.to_find_new_threads
= remote_threads_info
;
5896 remote_async_ops
.to_pid_to_str
= remote_pid_to_str
;
5897 remote_async_ops
.to_extra_thread_info
= remote_threads_extra_info
;
5898 remote_async_ops
.to_stop
= remote_stop
;
5899 remote_async_ops
.to_query
= remote_query
;
5900 remote_async_ops
.to_rcmd
= remote_rcmd
;
5901 remote_async_ops
.to_stratum
= process_stratum
;
5902 remote_async_ops
.to_has_all_memory
= 1;
5903 remote_async_ops
.to_has_memory
= 1;
5904 remote_async_ops
.to_has_stack
= 1;
5905 remote_async_ops
.to_has_registers
= 1;
5906 remote_async_ops
.to_has_execution
= 1;
5907 remote_async_ops
.to_has_thread_control
= tc_schedlock
; /* can lock scheduler */
5908 remote_async_ops
.to_can_async_p
= remote_can_async_p
;
5909 remote_async_ops
.to_is_async_p
= remote_is_async_p
;
5910 remote_async_ops
.to_async
= remote_async
;
5911 remote_async_ops
.to_async_mask_value
= 1;
5912 remote_async_ops
.to_magic
= OPS_MAGIC
;
5915 /* Set up the async extended remote vector by making a copy of the standard
5916 remote vector and adding to it. */
5919 init_extended_async_remote_ops (void)
5921 extended_async_remote_ops
= remote_async_ops
;
5923 extended_async_remote_ops
.to_shortname
= "extended-async";
5924 extended_async_remote_ops
.to_longname
=
5925 "Extended remote serial target in async gdb-specific protocol";
5926 extended_async_remote_ops
.to_doc
=
5927 "Use a remote computer via a serial line, using an async gdb-specific protocol.\n\
5928 Specify the serial device it is connected to (e.g. /dev/ttya).",
5929 extended_async_remote_ops
.to_open
= extended_remote_async_open
;
5930 extended_async_remote_ops
.to_create_inferior
= extended_remote_async_create_inferior
;
5931 extended_async_remote_ops
.to_mourn_inferior
= extended_remote_mourn
;
5935 set_remote_cmd (char *args
, int from_tty
)
5940 show_remote_cmd (char *args
, int from_tty
)
5943 show_remote_protocol_Z_packet_cmd (args
, from_tty
);
5944 show_remote_protocol_e_packet_cmd (args
, from_tty
);
5945 show_remote_protocol_E_packet_cmd (args
, from_tty
);
5946 show_remote_protocol_P_packet_cmd (args
, from_tty
);
5947 show_remote_protocol_qSymbol_packet_cmd (args
, from_tty
);
5948 show_remote_protocol_binary_download_cmd (args
, from_tty
);
5952 build_remote_gdbarch_data (void)
5954 remote_address_size
= TARGET_ADDR_BIT
;
5957 /* Saved pointer to previous owner of the new_objfile event. */
5958 static void (*remote_new_objfile_chain
) (struct objfile
*);
5960 /* Function to be called whenever a new objfile (shlib) is detected. */
5962 remote_new_objfile (struct objfile
*objfile
)
5964 if (remote_desc
!= 0) /* Have a remote connection */
5966 remote_check_symbols (objfile
);
5968 /* Call predecessor on chain, if any. */
5969 if (remote_new_objfile_chain
!= 0 &&
5971 remote_new_objfile_chain (objfile
);
5975 _initialize_remote (void)
5977 static struct cmd_list_element
*remote_set_cmdlist
;
5978 static struct cmd_list_element
*remote_show_cmdlist
;
5979 struct cmd_list_element
*tmpcmd
;
5981 /* architecture specific data */
5982 remote_gdbarch_data_handle
= register_gdbarch_data (init_remote_state
,
5985 /* Old tacky stuff. NOTE: This comes after the remote protocol so
5986 that the remote protocol has been initialized. */
5987 register_gdbarch_swap (&remote_address_size
,
5988 sizeof (&remote_address_size
), NULL
);
5989 register_gdbarch_swap (NULL
, 0, build_remote_gdbarch_data
);
5992 add_target (&remote_ops
);
5994 init_extended_remote_ops ();
5995 add_target (&extended_remote_ops
);
5997 init_remote_async_ops ();
5998 add_target (&remote_async_ops
);
6000 init_extended_async_remote_ops ();
6001 add_target (&extended_async_remote_ops
);
6003 init_remote_cisco_ops ();
6004 add_target (&remote_cisco_ops
);
6006 /* Hook into new objfile notification. */
6007 remote_new_objfile_chain
= target_new_objfile_hook
;
6008 target_new_objfile_hook
= remote_new_objfile
;
6011 init_remote_threadtests ();
6014 /* set/show remote ... */
6016 add_prefix_cmd ("remote", class_maintenance
, set_remote_cmd
, "\
6017 Remote protocol specific variables\n\
6018 Configure various remote-protocol specific variables such as\n\
6019 the packets being used",
6020 &remote_set_cmdlist
, "set remote ",
6021 0/*allow-unknown*/, &setlist
);
6022 add_prefix_cmd ("remote", class_maintenance
, show_remote_cmd
, "\
6023 Remote protocol specific variables\n\
6024 Configure various remote-protocol specific variables such as\n\
6025 the packets being used",
6026 &remote_show_cmdlist
, "show remote ",
6027 0/*allow-unknown*/, &showlist
);
6029 add_cmd ("compare-sections", class_obscure
, compare_sections_command
,
6030 "Compare section data on target to the exec file.\n\
6031 Argument is a single section name (default: all loaded sections).",
6034 add_cmd ("packet", class_maintenance
, packet_command
,
6035 "Send an arbitrary packet to a remote target.\n\
6036 maintenance packet TEXT\n\
6037 If GDB is talking to an inferior via the GDB serial protocol, then\n\
6038 this command sends the string TEXT to the inferior, and displays the\n\
6039 response packet. GDB supplies the initial `$' character, and the\n\
6040 terminating `#' character and checksum.",
6044 (add_set_boolean_cmd ("remotebreak", no_class
, &remote_break
,
6045 "Set whether to send break if interrupted.\n",
6049 /* Install commands for configuring memory read/write packets. */
6051 add_cmd ("remotewritesize", no_class
, set_memory_write_packet_size
,
6052 "Set the maximum number of bytes per memory write packet (deprecated).\n",
6054 add_cmd ("remotewritesize", no_class
, show_memory_write_packet_size
,
6055 "Show the maximum number of bytes per memory write packet (deprecated).\n",
6057 add_cmd ("memory-write-packet-size", no_class
,
6058 set_memory_write_packet_size
,
6059 "Set the maximum number of bytes per memory-write packet.\n"
6060 "Specify the number of bytes in a packet or 0 (zero) for the\n"
6061 "default packet size. The actual limit is further reduced\n"
6062 "dependent on the target. Specify ``fixed'' to disable the\n"
6063 "further restriction and ``limit'' to enable that restriction\n",
6064 &remote_set_cmdlist
);
6065 add_cmd ("memory-read-packet-size", no_class
,
6066 set_memory_read_packet_size
,
6067 "Set the maximum number of bytes per memory-read packet.\n"
6068 "Specify the number of bytes in a packet or 0 (zero) for the\n"
6069 "default packet size. The actual limit is further reduced\n"
6070 "dependent on the target. Specify ``fixed'' to disable the\n"
6071 "further restriction and ``limit'' to enable that restriction\n",
6072 &remote_set_cmdlist
);
6073 add_cmd ("memory-write-packet-size", no_class
,
6074 show_memory_write_packet_size
,
6075 "Show the maximum number of bytes per memory-write packet.\n",
6076 &remote_show_cmdlist
);
6077 add_cmd ("memory-read-packet-size", no_class
,
6078 show_memory_read_packet_size
,
6079 "Show the maximum number of bytes per memory-read packet.\n",
6080 &remote_show_cmdlist
);
6083 (add_set_cmd ("remoteaddresssize", class_obscure
,
6084 var_integer
, (char *) &remote_address_size
,
6085 "Set the maximum size of the address (in bits) \
6086 in a memory packet.\n",
6090 add_packet_config_cmd (&remote_protocol_binary_download
,
6091 "X", "binary-download",
6092 set_remote_protocol_binary_download_cmd
,
6093 show_remote_protocol_binary_download_cmd
,
6094 &remote_set_cmdlist
, &remote_show_cmdlist
,
6097 /* XXXX - should ``set remotebinarydownload'' be retained for
6100 (add_set_cmd ("remotebinarydownload", no_class
,
6101 var_boolean
, (char *) &remote_binary_download
,
6102 "Set binary downloads.\n", &setlist
),
6106 add_info ("remote-process", remote_info_process
,
6107 "Query the remote system for process info.");
6109 add_packet_config_cmd (&remote_protocol_qSymbol
,
6110 "qSymbol", "symbol-lookup",
6111 set_remote_protocol_qSymbol_packet_cmd
,
6112 show_remote_protocol_qSymbol_packet_cmd
,
6113 &remote_set_cmdlist
, &remote_show_cmdlist
,
6116 add_packet_config_cmd (&remote_protocol_e
,
6117 "e", "step-over-range",
6118 set_remote_protocol_e_packet_cmd
,
6119 show_remote_protocol_e_packet_cmd
,
6120 &remote_set_cmdlist
, &remote_show_cmdlist
,
6122 /* Disable by default. The ``e'' packet has nasty interactions with
6123 the threading code - it relies on global state. */
6124 remote_protocol_e
.detect
= CMD_AUTO_BOOLEAN_FALSE
;
6125 update_packet_config (&remote_protocol_e
);
6127 add_packet_config_cmd (&remote_protocol_E
,
6128 "E", "step-over-range-w-signal",
6129 set_remote_protocol_E_packet_cmd
,
6130 show_remote_protocol_E_packet_cmd
,
6131 &remote_set_cmdlist
, &remote_show_cmdlist
,
6133 /* Disable by default. The ``e'' packet has nasty interactions with
6134 the threading code - it relies on global state. */
6135 remote_protocol_E
.detect
= CMD_AUTO_BOOLEAN_FALSE
;
6136 update_packet_config (&remote_protocol_E
);
6138 add_packet_config_cmd (&remote_protocol_P
,
6139 "P", "set-register",
6140 set_remote_protocol_P_packet_cmd
,
6141 show_remote_protocol_P_packet_cmd
,
6142 &remote_set_cmdlist
, &remote_show_cmdlist
,
6145 add_packet_config_cmd (&remote_protocol_Z
[Z_PACKET_SOFTWARE_BP
],
6146 "Z0", "software-breakpoint",
6147 set_remote_protocol_Z_software_bp_packet_cmd
,
6148 show_remote_protocol_Z_software_bp_packet_cmd
,
6149 &remote_set_cmdlist
, &remote_show_cmdlist
,
6152 add_packet_config_cmd (&remote_protocol_Z
[Z_PACKET_HARDWARE_BP
],
6153 "Z1", "hardware-breakpoint",
6154 set_remote_protocol_Z_hardware_bp_packet_cmd
,
6155 show_remote_protocol_Z_hardware_bp_packet_cmd
,
6156 &remote_set_cmdlist
, &remote_show_cmdlist
,
6159 add_packet_config_cmd (&remote_protocol_Z
[Z_PACKET_WRITE_WP
],
6160 "Z2", "write-watchpoint",
6161 set_remote_protocol_Z_write_wp_packet_cmd
,
6162 show_remote_protocol_Z_write_wp_packet_cmd
,
6163 &remote_set_cmdlist
, &remote_show_cmdlist
,
6166 add_packet_config_cmd (&remote_protocol_Z
[Z_PACKET_READ_WP
],
6167 "Z3", "read-watchpoint",
6168 set_remote_protocol_Z_read_wp_packet_cmd
,
6169 show_remote_protocol_Z_read_wp_packet_cmd
,
6170 &remote_set_cmdlist
, &remote_show_cmdlist
,
6173 add_packet_config_cmd (&remote_protocol_Z
[Z_PACKET_ACCESS_WP
],
6174 "Z4", "access-watchpoint",
6175 set_remote_protocol_Z_access_wp_packet_cmd
,
6176 show_remote_protocol_Z_access_wp_packet_cmd
,
6177 &remote_set_cmdlist
, &remote_show_cmdlist
,
6180 /* Keep the old ``set remote Z-packet ...'' working. */
6181 tmpcmd
= add_set_auto_boolean_cmd ("Z-packet", class_obscure
,
6182 &remote_Z_packet_detect
,
6184 Set use of remote protocol `Z' packets", &remote_set_cmdlist
);
6185 set_cmd_sfunc (tmpcmd
, set_remote_protocol_Z_packet_cmd
);
6186 add_cmd ("Z-packet", class_obscure
, show_remote_protocol_Z_packet_cmd
,
6187 "Show use of remote protocol `Z' packets ",
6188 &remote_show_cmdlist
);