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, 2003, 2004
5 Free Software Foundation, Inc.
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 59 Temple Place - Suite 330,
22 Boston, MA 02111-1307, USA. */
24 /* See the GDB User Guide for details of the GDB remote protocol. */
27 #include "gdb_string.h"
34 /*#include "terminal.h" */
37 #include "gdb-stabs.h"
38 #include "gdbthread.h"
42 #include "gdb_assert.h"
47 #include <sys/types.h>
50 #include "event-loop.h"
51 #include "event-top.h"
57 #include "gdbcore.h" /* for exec_bfd */
59 #include "remote-fileio.h"
61 /* Prototypes for local functions */
62 static void cleanup_sigint_signal_handler (void *dummy
);
63 static void initialize_sigint_signal_handler (void);
64 static int getpkt_sane (char *buf
, long sizeof_buf
, int forever
);
66 static void handle_remote_sigint (int);
67 static void handle_remote_sigint_twice (int);
68 static void async_remote_interrupt (gdb_client_data
);
69 void async_remote_interrupt_twice (gdb_client_data
);
71 static void build_remote_gdbarch_data (void);
73 static void remote_files_info (struct target_ops
*ignore
);
75 static int remote_xfer_memory (CORE_ADDR memaddr
, char *myaddr
,
76 int len
, int should_write
,
77 struct mem_attrib
*attrib
,
78 struct target_ops
*target
);
80 static void remote_prepare_to_store (void);
82 static void remote_fetch_registers (int regno
);
84 static void remote_resume (ptid_t ptid
, int step
,
85 enum target_signal siggnal
);
86 static void remote_async_resume (ptid_t ptid
, int step
,
87 enum target_signal siggnal
);
88 static int remote_start_remote (struct ui_out
*uiout
, void *dummy
);
90 static void remote_open (char *name
, int from_tty
);
91 static void remote_async_open (char *name
, int from_tty
);
93 static void extended_remote_open (char *name
, int from_tty
);
94 static void extended_remote_async_open (char *name
, int from_tty
);
96 static void remote_open_1 (char *, int, struct target_ops
*, int extended_p
,
99 static void remote_close (int quitting
);
101 static void remote_store_registers (int regno
);
103 static void remote_mourn (void);
104 static void remote_async_mourn (void);
106 static void extended_remote_restart (void);
108 static void extended_remote_mourn (void);
110 static void extended_remote_create_inferior (char *, char *, char **);
111 static void extended_remote_async_create_inferior (char *, char *, char **);
113 static void remote_mourn_1 (struct target_ops
*);
115 static void remote_send (char *buf
, long sizeof_buf
);
117 static int readchar (int timeout
);
119 static ptid_t
remote_wait (ptid_t ptid
,
120 struct target_waitstatus
*status
);
121 static ptid_t
remote_async_wait (ptid_t ptid
,
122 struct target_waitstatus
*status
);
124 static void remote_kill (void);
125 static void remote_async_kill (void);
127 static int tohex (int nib
);
129 static void remote_detach (char *args
, int from_tty
);
131 static void remote_interrupt (int signo
);
133 static void remote_interrupt_twice (int signo
);
135 static void interrupt_query (void);
137 static void set_thread (int, int);
139 static int remote_thread_alive (ptid_t
);
141 static void get_offsets (void);
143 static long read_frame (char *buf
, long sizeof_buf
);
145 static int remote_insert_breakpoint (CORE_ADDR
, char *);
147 static int remote_remove_breakpoint (CORE_ADDR
, char *);
149 static int hexnumlen (ULONGEST num
);
151 static void init_remote_ops (void);
153 static void init_extended_remote_ops (void);
155 static void init_remote_cisco_ops (void);
157 static struct target_ops remote_cisco_ops
;
159 static void remote_stop (void);
161 static int ishex (int ch
, int *val
);
163 static int stubhex (int ch
);
165 static int hexnumstr (char *, ULONGEST
);
167 static int hexnumnstr (char *, ULONGEST
, int);
169 static CORE_ADDR
remote_address_masked (CORE_ADDR
);
171 static void print_packet (char *);
173 static unsigned long crc32 (unsigned char *, int, unsigned int);
175 static void compare_sections_command (char *, int);
177 static void packet_command (char *, int);
179 static int stub_unpack_int (char *buff
, int fieldlength
);
181 static ptid_t
remote_current_thread (ptid_t oldptid
);
183 static void remote_find_new_threads (void);
185 static void record_currthread (int currthread
);
187 static int fromhex (int a
);
189 static int hex2bin (const char *hex
, char *bin
, int count
);
191 static int bin2hex (const char *bin
, char *hex
, int count
);
193 static int putpkt_binary (char *buf
, int cnt
);
195 static void check_binary_download (CORE_ADDR addr
);
197 struct packet_config
;
199 static void show_packet_config_cmd (struct packet_config
*config
);
201 static void update_packet_config (struct packet_config
*config
);
203 void _initialize_remote (void);
205 /* Description of the remote protocol. Strictly speaking, when the
206 target is open()ed, remote.c should create a per-target description
207 of the remote protocol using that target's architecture.
208 Unfortunately, the target stack doesn't include local state. For
209 the moment keep the information in the target's architecture
214 long offset
; /* Offset into G packet. */
215 long regnum
; /* GDB's internal register number. */
216 LONGEST pnum
; /* Remote protocol register number. */
217 int in_g_packet
; /* Always part of G packet. */
218 /* long size in bytes; == DEPRECATED_REGISTER_RAW_SIZE (regnum); at present. */
219 /* char *name; == REGISTER_NAME (regnum); at present. */
224 /* Description of the remote protocol registers. */
225 long sizeof_g_packet
;
227 /* Description of the remote protocol registers indexed by REGNUM
228 (making an array of NUM_REGS + NUM_PSEUDO_REGS in size). */
229 struct packet_reg
*regs
;
231 /* This is the size (in chars) of the first response to the ``g''
232 packet. It is used as a heuristic when determining the maximum
233 size of memory-read and memory-write packets. A target will
234 typically only reserve a buffer large enough to hold the ``g''
235 packet. The size does not include packet overhead (headers and
237 long actual_register_packet_size
;
239 /* This is the maximum size (in chars) of a non read/write packet.
240 It is also used as a cap on the size of read/write packets. */
241 long remote_packet_size
;
245 /* Handle for retreving the remote protocol data from gdbarch. */
246 static struct gdbarch_data
*remote_gdbarch_data_handle
;
248 static struct remote_state
*
249 get_remote_state (void)
251 return gdbarch_data (current_gdbarch
, remote_gdbarch_data_handle
);
255 init_remote_state (struct gdbarch
*gdbarch
)
258 struct remote_state
*rs
= GDBARCH_OBSTACK_ZALLOC (gdbarch
, struct remote_state
);
260 if (DEPRECATED_REGISTER_BYTES
!= 0)
261 rs
->sizeof_g_packet
= DEPRECATED_REGISTER_BYTES
;
263 rs
->sizeof_g_packet
= 0;
265 /* Assume a 1:1 regnum<->pnum table. */
266 rs
->regs
= GDBARCH_OBSTACK_CALLOC (gdbarch
, NUM_REGS
+ NUM_PSEUDO_REGS
,
268 for (regnum
= 0; regnum
< NUM_REGS
+ NUM_PSEUDO_REGS
; regnum
++)
270 struct packet_reg
*r
= &rs
->regs
[regnum
];
273 r
->offset
= DEPRECATED_REGISTER_BYTE (regnum
);
274 r
->in_g_packet
= (regnum
< NUM_REGS
);
275 /* ...name = REGISTER_NAME (regnum); */
277 /* Compute packet size by accumulating the size of all registers. */
278 if (DEPRECATED_REGISTER_BYTES
== 0)
279 rs
->sizeof_g_packet
+= register_size (current_gdbarch
, regnum
);
282 /* Default maximum number of characters in a packet body. Many
283 remote stubs have a hardwired buffer size of 400 bytes
284 (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used
285 as the maximum packet-size to ensure that the packet and an extra
286 NUL character can always fit in the buffer. This stops GDB
287 trashing stubs that try to squeeze an extra NUL into what is
288 already a full buffer (As of 1999-12-04 that was most stubs. */
289 rs
->remote_packet_size
= 400 - 1;
291 /* Should rs->sizeof_g_packet needs more space than the
292 default, adjust the size accordingly. Remember that each byte is
293 encoded as two characters. 32 is the overhead for the packet
294 header / footer. NOTE: cagney/1999-10-26: I suspect that 8
295 (``$NN:G...#NN'') is a better guess, the below has been padded a
297 if (rs
->sizeof_g_packet
> ((rs
->remote_packet_size
- 32) / 2))
298 rs
->remote_packet_size
= (rs
->sizeof_g_packet
* 2 + 32);
300 /* This one is filled in when a ``g'' packet is received. */
301 rs
->actual_register_packet_size
= 0;
306 static struct packet_reg
*
307 packet_reg_from_regnum (struct remote_state
*rs
, long regnum
)
309 if (regnum
< 0 && regnum
>= NUM_REGS
+ NUM_PSEUDO_REGS
)
313 struct packet_reg
*r
= &rs
->regs
[regnum
];
314 gdb_assert (r
->regnum
== regnum
);
319 static struct packet_reg
*
320 packet_reg_from_pnum (struct remote_state
*rs
, LONGEST pnum
)
323 for (i
= 0; i
< NUM_REGS
+ NUM_PSEUDO_REGS
; i
++)
325 struct packet_reg
*r
= &rs
->regs
[i
];
332 /* FIXME: graces/2002-08-08: These variables should eventually be
333 bound to an instance of the target object (as in gdbarch-tdep()),
334 when such a thing exists. */
336 /* This is set to the data address of the access causing the target
337 to stop for a watchpoint. */
338 static CORE_ADDR remote_watch_data_address
;
340 /* This is non-zero if taregt stopped for a watchpoint. */
341 static int remote_stopped_by_watchpoint_p
;
344 static struct target_ops remote_ops
;
346 static struct target_ops extended_remote_ops
;
348 /* Temporary target ops. Just like the remote_ops and
349 extended_remote_ops, but with asynchronous support. */
350 static struct target_ops remote_async_ops
;
352 static struct target_ops extended_async_remote_ops
;
354 /* FIXME: cagney/1999-09-23: Even though getpkt was called with
355 ``forever'' still use the normal timeout mechanism. This is
356 currently used by the ASYNC code to guarentee that target reads
357 during the initial connect always time-out. Once getpkt has been
358 modified to return a timeout indication and, in turn
359 remote_wait()/wait_for_inferior() have gained a timeout parameter
361 static int wait_forever_enabled_p
= 1;
364 /* This variable chooses whether to send a ^C or a break when the user
365 requests program interruption. Although ^C is usually what remote
366 systems expect, and that is the default here, sometimes a break is
367 preferable instead. */
369 static int remote_break
;
371 /* Descriptor for I/O to remote machine. Initialize it to NULL so that
372 remote_open knows that we don't have a file open when the program
374 static struct serial
*remote_desc
= NULL
;
376 /* This is set by the target (thru the 'S' message)
377 to denote that the target is in kernel mode. */
378 static int cisco_kernel_mode
= 0;
380 /* This variable sets the number of bits in an address that are to be
381 sent in a memory ("M" or "m") packet. Normally, after stripping
382 leading zeros, the entire address would be sent. This variable
383 restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The
384 initial implementation of remote.c restricted the address sent in
385 memory packets to ``host::sizeof long'' bytes - (typically 32
386 bits). Consequently, for 64 bit targets, the upper 32 bits of an
387 address was never sent. Since fixing this bug may cause a break in
388 some remote targets this variable is principly provided to
389 facilitate backward compatibility. */
391 static int remote_address_size
;
393 /* Tempoary to track who currently owns the terminal. See
394 target_async_terminal_* for more details. */
396 static int remote_async_terminal_ours_p
;
399 /* User configurable variables for the number of characters in a
400 memory read/write packet. MIN ((rs->remote_packet_size),
401 rs->sizeof_g_packet) is the default. Some targets need smaller
402 values (fifo overruns, et.al.) and some users need larger values
403 (speed up transfers). The variables ``preferred_*'' (the user
404 request), ``current_*'' (what was actually set) and ``forced_*''
405 (Positive - a soft limit, negative - a hard limit). */
407 struct memory_packet_config
414 /* Compute the current size of a read/write packet. Since this makes
415 use of ``actual_register_packet_size'' the computation is dynamic. */
418 get_memory_packet_size (struct memory_packet_config
*config
)
420 struct remote_state
*rs
= get_remote_state ();
421 /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk
422 law?) that some hosts don't cope very well with large alloca()
423 calls. Eventually the alloca() code will be replaced by calls to
424 xmalloc() and make_cleanups() allowing this restriction to either
425 be lifted or removed. */
426 #ifndef MAX_REMOTE_PACKET_SIZE
427 #define MAX_REMOTE_PACKET_SIZE 16384
429 /* NOTE: 16 is just chosen at random. */
430 #ifndef MIN_REMOTE_PACKET_SIZE
431 #define MIN_REMOTE_PACKET_SIZE 16
436 if (config
->size
<= 0)
437 what_they_get
= MAX_REMOTE_PACKET_SIZE
;
439 what_they_get
= config
->size
;
443 what_they_get
= (rs
->remote_packet_size
);
444 /* Limit the packet to the size specified by the user. */
446 && what_they_get
> config
->size
)
447 what_they_get
= config
->size
;
448 /* Limit it to the size of the targets ``g'' response. */
449 if ((rs
->actual_register_packet_size
) > 0
450 && what_they_get
> (rs
->actual_register_packet_size
))
451 what_they_get
= (rs
->actual_register_packet_size
);
453 if (what_they_get
> MAX_REMOTE_PACKET_SIZE
)
454 what_they_get
= MAX_REMOTE_PACKET_SIZE
;
455 if (what_they_get
< MIN_REMOTE_PACKET_SIZE
)
456 what_they_get
= MIN_REMOTE_PACKET_SIZE
;
457 return what_they_get
;
460 /* Update the size of a read/write packet. If they user wants
461 something really big then do a sanity check. */
464 set_memory_packet_size (char *args
, struct memory_packet_config
*config
)
466 int fixed_p
= config
->fixed_p
;
467 long size
= config
->size
;
469 error ("Argument required (integer, `fixed' or `limited').");
470 else if (strcmp (args
, "hard") == 0
471 || strcmp (args
, "fixed") == 0)
473 else if (strcmp (args
, "soft") == 0
474 || strcmp (args
, "limit") == 0)
479 size
= strtoul (args
, &end
, 0);
481 error ("Invalid %s (bad syntax).", config
->name
);
483 /* Instead of explicitly capping the size of a packet to
484 MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is
485 instead allowed to set the size to something arbitrarily
487 if (size
> MAX_REMOTE_PACKET_SIZE
)
488 error ("Invalid %s (too large).", config
->name
);
492 if (fixed_p
&& !config
->fixed_p
)
494 if (! query ("The target may not be able to correctly handle a %s\n"
495 "of %ld bytes. Change the packet size? ",
497 error ("Packet size not changed.");
499 /* Update the config. */
500 config
->fixed_p
= fixed_p
;
505 show_memory_packet_size (struct memory_packet_config
*config
)
507 printf_filtered ("The %s is %ld. ", config
->name
, config
->size
);
509 printf_filtered ("Packets are fixed at %ld bytes.\n",
510 get_memory_packet_size (config
));
512 printf_filtered ("Packets are limited to %ld bytes.\n",
513 get_memory_packet_size (config
));
516 static struct memory_packet_config memory_write_packet_config
=
518 "memory-write-packet-size",
522 set_memory_write_packet_size (char *args
, int from_tty
)
524 set_memory_packet_size (args
, &memory_write_packet_config
);
528 show_memory_write_packet_size (char *args
, int from_tty
)
530 show_memory_packet_size (&memory_write_packet_config
);
534 get_memory_write_packet_size (void)
536 return get_memory_packet_size (&memory_write_packet_config
);
539 static struct memory_packet_config memory_read_packet_config
=
541 "memory-read-packet-size",
545 set_memory_read_packet_size (char *args
, int from_tty
)
547 set_memory_packet_size (args
, &memory_read_packet_config
);
551 show_memory_read_packet_size (char *args
, int from_tty
)
553 show_memory_packet_size (&memory_read_packet_config
);
557 get_memory_read_packet_size (void)
559 struct remote_state
*rs
= get_remote_state ();
560 long size
= get_memory_packet_size (&memory_read_packet_config
);
561 /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an
562 extra buffer size argument before the memory read size can be
563 increased beyond (rs->remote_packet_size). */
564 if (size
> (rs
->remote_packet_size
))
565 size
= (rs
->remote_packet_size
);
570 /* Generic configuration support for packets the stub optionally
571 supports. Allows the user to specify the use of the packet as well
572 as allowing GDB to auto-detect support in the remote stub. */
576 PACKET_SUPPORT_UNKNOWN
= 0,
585 enum auto_boolean detect
;
586 enum packet_support support
;
589 /* Analyze a packet's return value and update the packet config
600 update_packet_config (struct packet_config
*config
)
602 switch (config
->detect
)
604 case AUTO_BOOLEAN_TRUE
:
605 config
->support
= PACKET_ENABLE
;
607 case AUTO_BOOLEAN_FALSE
:
608 config
->support
= PACKET_DISABLE
;
610 case AUTO_BOOLEAN_AUTO
:
611 config
->support
= PACKET_SUPPORT_UNKNOWN
;
617 show_packet_config_cmd (struct packet_config
*config
)
619 char *support
= "internal-error";
620 switch (config
->support
)
626 support
= "disabled";
628 case PACKET_SUPPORT_UNKNOWN
:
632 switch (config
->detect
)
634 case AUTO_BOOLEAN_AUTO
:
635 printf_filtered ("Support for remote protocol `%s' (%s) packet is auto-detected, currently %s.\n",
636 config
->name
, config
->title
, support
);
638 case AUTO_BOOLEAN_TRUE
:
639 case AUTO_BOOLEAN_FALSE
:
640 printf_filtered ("Support for remote protocol `%s' (%s) packet is currently %s.\n",
641 config
->name
, config
->title
, support
);
647 add_packet_config_cmd (struct packet_config
*config
,
650 cmd_sfunc_ftype
*set_func
,
651 cmd_sfunc_ftype
*show_func
,
652 struct cmd_list_element
**set_remote_list
,
653 struct cmd_list_element
**show_remote_list
,
656 struct cmd_list_element
*set_cmd
;
657 struct cmd_list_element
*show_cmd
;
662 config
->title
= title
;
663 config
->detect
= AUTO_BOOLEAN_AUTO
;
664 config
->support
= PACKET_SUPPORT_UNKNOWN
;
665 xasprintf (&set_doc
, "Set use of remote protocol `%s' (%s) packet",
667 xasprintf (&show_doc
, "Show current use of remote protocol `%s' (%s) packet",
669 /* set/show TITLE-packet {auto,on,off} */
670 xasprintf (&cmd_name
, "%s-packet", title
);
671 add_setshow_auto_boolean_cmd (cmd_name
, class_obscure
,
672 &config
->detect
, set_doc
, show_doc
,
674 set_remote_list
, show_remote_list
);
675 /* set/show remote NAME-packet {auto,on,off} -- legacy */
679 xasprintf (&legacy_name
, "%s-packet", name
);
680 add_alias_cmd (legacy_name
, cmd_name
, class_obscure
, 0,
682 add_alias_cmd (legacy_name
, cmd_name
, class_obscure
, 0,
687 static enum packet_result
688 packet_ok (const char *buf
, struct packet_config
*config
)
692 /* The stub recognized the packet request. Check that the
693 operation succeeded. */
694 switch (config
->support
)
696 case PACKET_SUPPORT_UNKNOWN
:
698 fprintf_unfiltered (gdb_stdlog
,
699 "Packet %s (%s) is supported\n",
700 config
->name
, config
->title
);
701 config
->support
= PACKET_ENABLE
;
704 internal_error (__FILE__
, __LINE__
,
705 "packet_ok: attempt to use a disabled packet");
710 if (buf
[0] == 'O' && buf
[1] == 'K' && buf
[2] == '\0')
711 /* "OK" - definitly OK. */
714 && isxdigit (buf
[1]) && isxdigit (buf
[2])
716 /* "Enn" - definitly an error. */
718 /* The packet may or may not be OK. Just assume it is */
723 /* The stub does not support the packet. */
724 switch (config
->support
)
727 if (config
->detect
== AUTO_BOOLEAN_AUTO
)
728 /* If the stub previously indicated that the packet was
729 supported then there is a protocol error.. */
730 error ("Protocol error: %s (%s) conflicting enabled responses.",
731 config
->name
, config
->title
);
733 /* The user set it wrong. */
734 error ("Enabled packet %s (%s) not recognized by stub",
735 config
->name
, config
->title
);
737 case PACKET_SUPPORT_UNKNOWN
:
739 fprintf_unfiltered (gdb_stdlog
,
740 "Packet %s (%s) is NOT supported\n",
741 config
->name
, config
->title
);
742 config
->support
= PACKET_DISABLE
;
747 return PACKET_UNKNOWN
;
751 /* Should we try the 'vCont' (descriptive resume) request? */
752 static struct packet_config remote_protocol_vcont
;
755 set_remote_protocol_vcont_packet_cmd (char *args
, int from_tty
,
756 struct cmd_list_element
*c
)
758 update_packet_config (&remote_protocol_vcont
);
762 show_remote_protocol_vcont_packet_cmd (char *args
, int from_tty
,
763 struct cmd_list_element
*c
)
765 show_packet_config_cmd (&remote_protocol_vcont
);
768 /* Should we try the 'qSymbol' (target symbol lookup service) request? */
769 static struct packet_config remote_protocol_qSymbol
;
772 set_remote_protocol_qSymbol_packet_cmd (char *args
, int from_tty
,
773 struct cmd_list_element
*c
)
775 update_packet_config (&remote_protocol_qSymbol
);
779 show_remote_protocol_qSymbol_packet_cmd (char *args
, int from_tty
,
780 struct cmd_list_element
*c
)
782 show_packet_config_cmd (&remote_protocol_qSymbol
);
785 /* Should we try the 'e' (step over range) request? */
786 static struct packet_config remote_protocol_e
;
789 set_remote_protocol_e_packet_cmd (char *args
, int from_tty
,
790 struct cmd_list_element
*c
)
792 update_packet_config (&remote_protocol_e
);
796 show_remote_protocol_e_packet_cmd (char *args
, int from_tty
,
797 struct cmd_list_element
*c
)
799 show_packet_config_cmd (&remote_protocol_e
);
803 /* Should we try the 'E' (step over range / w signal #) request? */
804 static struct packet_config remote_protocol_E
;
807 set_remote_protocol_E_packet_cmd (char *args
, int from_tty
,
808 struct cmd_list_element
*c
)
810 update_packet_config (&remote_protocol_E
);
814 show_remote_protocol_E_packet_cmd (char *args
, int from_tty
,
815 struct cmd_list_element
*c
)
817 show_packet_config_cmd (&remote_protocol_E
);
821 /* Should we try the 'P' (set register) request? */
823 static struct packet_config remote_protocol_P
;
826 set_remote_protocol_P_packet_cmd (char *args
, int from_tty
,
827 struct cmd_list_element
*c
)
829 update_packet_config (&remote_protocol_P
);
833 show_remote_protocol_P_packet_cmd (char *args
, int from_tty
,
834 struct cmd_list_element
*c
)
836 show_packet_config_cmd (&remote_protocol_P
);
839 /* Should we try one of the 'Z' requests? */
843 Z_PACKET_SOFTWARE_BP
,
844 Z_PACKET_HARDWARE_BP
,
851 static struct packet_config remote_protocol_Z
[NR_Z_PACKET_TYPES
];
853 /* FIXME: Instead of having all these boiler plate functions, the
854 command callback should include a context argument. */
857 set_remote_protocol_Z_software_bp_packet_cmd (char *args
, int from_tty
,
858 struct cmd_list_element
*c
)
860 update_packet_config (&remote_protocol_Z
[Z_PACKET_SOFTWARE_BP
]);
864 show_remote_protocol_Z_software_bp_packet_cmd (char *args
, int from_tty
,
865 struct cmd_list_element
*c
)
867 show_packet_config_cmd (&remote_protocol_Z
[Z_PACKET_SOFTWARE_BP
]);
871 set_remote_protocol_Z_hardware_bp_packet_cmd (char *args
, int from_tty
,
872 struct cmd_list_element
*c
)
874 update_packet_config (&remote_protocol_Z
[Z_PACKET_HARDWARE_BP
]);
878 show_remote_protocol_Z_hardware_bp_packet_cmd (char *args
, int from_tty
,
879 struct cmd_list_element
*c
)
881 show_packet_config_cmd (&remote_protocol_Z
[Z_PACKET_HARDWARE_BP
]);
885 set_remote_protocol_Z_write_wp_packet_cmd (char *args
, int from_tty
,
886 struct cmd_list_element
*c
)
888 update_packet_config (&remote_protocol_Z
[Z_PACKET_WRITE_WP
]);
892 show_remote_protocol_Z_write_wp_packet_cmd (char *args
, int from_tty
,
893 struct cmd_list_element
*c
)
895 show_packet_config_cmd (&remote_protocol_Z
[Z_PACKET_WRITE_WP
]);
899 set_remote_protocol_Z_read_wp_packet_cmd (char *args
, int from_tty
,
900 struct cmd_list_element
*c
)
902 update_packet_config (&remote_protocol_Z
[Z_PACKET_READ_WP
]);
906 show_remote_protocol_Z_read_wp_packet_cmd (char *args
, int from_tty
,
907 struct cmd_list_element
*c
)
909 show_packet_config_cmd (&remote_protocol_Z
[Z_PACKET_READ_WP
]);
913 set_remote_protocol_Z_access_wp_packet_cmd (char *args
, int from_tty
,
914 struct cmd_list_element
*c
)
916 update_packet_config (&remote_protocol_Z
[Z_PACKET_ACCESS_WP
]);
920 show_remote_protocol_Z_access_wp_packet_cmd (char *args
, int from_tty
,
921 struct cmd_list_element
*c
)
923 show_packet_config_cmd (&remote_protocol_Z
[Z_PACKET_ACCESS_WP
]);
926 /* For compatibility with older distributions. Provide a ``set remote
927 Z-packet ...'' command that updates all the Z packet types. */
929 static enum auto_boolean remote_Z_packet_detect
;
932 set_remote_protocol_Z_packet_cmd (char *args
, int from_tty
,
933 struct cmd_list_element
*c
)
936 for (i
= 0; i
< NR_Z_PACKET_TYPES
; i
++)
938 remote_protocol_Z
[i
].detect
= remote_Z_packet_detect
;
939 update_packet_config (&remote_protocol_Z
[i
]);
944 show_remote_protocol_Z_packet_cmd (char *args
, int from_tty
,
945 struct cmd_list_element
*c
)
948 for (i
= 0; i
< NR_Z_PACKET_TYPES
; i
++)
950 show_packet_config_cmd (&remote_protocol_Z
[i
]);
954 /* Should we try the 'X' (remote binary download) packet?
956 This variable (available to the user via "set remote X-packet")
957 dictates whether downloads are sent in binary (via the 'X' packet).
958 We assume that the stub can, and attempt to do it. This will be
959 cleared if the stub does not understand it. This switch is still
960 needed, though in cases when the packet is supported in the stub,
961 but the connection does not allow it (i.e., 7-bit serial connection
964 static struct packet_config remote_protocol_binary_download
;
966 /* Should we try the 'ThreadInfo' query packet?
968 This variable (NOT available to the user: auto-detect only!)
969 determines whether GDB will use the new, simpler "ThreadInfo"
970 query or the older, more complex syntax for thread queries.
971 This is an auto-detect variable (set to true at each connect,
972 and set to false when the target fails to recognize it). */
974 static int use_threadinfo_query
;
975 static int use_threadextra_query
;
978 set_remote_protocol_binary_download_cmd (char *args
,
980 struct cmd_list_element
*c
)
982 update_packet_config (&remote_protocol_binary_download
);
986 show_remote_protocol_binary_download_cmd (char *args
, int from_tty
,
987 struct cmd_list_element
*c
)
989 show_packet_config_cmd (&remote_protocol_binary_download
);
993 /* Tokens for use by the asynchronous signal handlers for SIGINT */
994 static void *sigint_remote_twice_token
;
995 static void *sigint_remote_token
;
997 /* These are pointers to hook functions that may be set in order to
998 modify resume/wait behavior for a particular architecture. */
1000 void (*target_resume_hook
) (void);
1001 void (*target_wait_loop_hook
) (void);
1005 /* These are the threads which we last sent to the remote system.
1006 -1 for all or -2 for not sent yet. */
1007 static int general_thread
;
1008 static int continue_thread
;
1010 /* Call this function as a result of
1011 1) A halt indication (T packet) containing a thread id
1012 2) A direct query of currthread
1013 3) Successful execution of set thread
1017 record_currthread (int currthread
)
1019 general_thread
= currthread
;
1021 /* If this is a new thread, add it to GDB's thread list.
1022 If we leave it up to WFI to do this, bad things will happen. */
1023 if (!in_thread_list (pid_to_ptid (currthread
)))
1025 add_thread (pid_to_ptid (currthread
));
1026 ui_out_text (uiout
, "[New ");
1027 ui_out_text (uiout
, target_pid_to_str (pid_to_ptid (currthread
)));
1028 ui_out_text (uiout
, "]\n");
1032 #define MAGIC_NULL_PID 42000
1035 set_thread (int th
, int gen
)
1037 struct remote_state
*rs
= get_remote_state ();
1038 char *buf
= alloca (rs
->remote_packet_size
);
1039 int state
= gen
? general_thread
: continue_thread
;
1045 buf
[1] = gen
? 'g' : 'c';
1046 if (th
== MAGIC_NULL_PID
)
1052 sprintf (&buf
[2], "-%x", -th
);
1054 sprintf (&buf
[2], "%x", th
);
1056 getpkt (buf
, (rs
->remote_packet_size
), 0);
1058 general_thread
= th
;
1060 continue_thread
= th
;
1063 /* Return nonzero if the thread TH is still alive on the remote system. */
1066 remote_thread_alive (ptid_t ptid
)
1068 int tid
= PIDGET (ptid
);
1072 sprintf (buf
, "T-%08x", -tid
);
1074 sprintf (buf
, "T%08x", tid
);
1076 getpkt (buf
, sizeof (buf
), 0);
1077 return (buf
[0] == 'O' && buf
[1] == 'K');
1080 /* About these extended threadlist and threadinfo packets. They are
1081 variable length packets but, the fields within them are often fixed
1082 length. They are redundent enough to send over UDP as is the
1083 remote protocol in general. There is a matching unit test module
1086 #define OPAQUETHREADBYTES 8
1088 /* a 64 bit opaque identifier */
1089 typedef unsigned char threadref
[OPAQUETHREADBYTES
];
1091 /* WARNING: This threadref data structure comes from the remote O.S., libstub
1092 protocol encoding, and remote.c. it is not particularly changable */
1094 /* Right now, the internal structure is int. We want it to be bigger.
1098 typedef int gdb_threadref
; /* internal GDB thread reference */
1100 /* gdb_ext_thread_info is an internal GDB data structure which is
1101 equivalint to the reply of the remote threadinfo packet */
1103 struct gdb_ext_thread_info
1105 threadref threadid
; /* External form of thread reference */
1106 int active
; /* Has state interesting to GDB? , regs, stack */
1107 char display
[256]; /* Brief state display, name, blocked/syspended */
1108 char shortname
[32]; /* To be used to name threads */
1109 char more_display
[256]; /* Long info, statistics, queue depth, whatever */
1112 /* The volume of remote transfers can be limited by submitting
1113 a mask containing bits specifying the desired information.
1114 Use a union of these values as the 'selection' parameter to
1115 get_thread_info. FIXME: Make these TAG names more thread specific.
1118 #define TAG_THREADID 1
1119 #define TAG_EXISTS 2
1120 #define TAG_DISPLAY 4
1121 #define TAG_THREADNAME 8
1122 #define TAG_MOREDISPLAY 16
1124 #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES*2)
1126 char *unpack_varlen_hex (char *buff
, ULONGEST
*result
);
1128 static char *unpack_nibble (char *buf
, int *val
);
1130 static char *pack_nibble (char *buf
, int nibble
);
1132 static char *pack_hex_byte (char *pkt
, int /*unsigned char */ byte
);
1134 static char *unpack_byte (char *buf
, int *value
);
1136 static char *pack_int (char *buf
, int value
);
1138 static char *unpack_int (char *buf
, int *value
);
1140 static char *unpack_string (char *src
, char *dest
, int length
);
1142 static char *pack_threadid (char *pkt
, threadref
* id
);
1144 static char *unpack_threadid (char *inbuf
, threadref
* id
);
1146 void int_to_threadref (threadref
* id
, int value
);
1148 static int threadref_to_int (threadref
* ref
);
1150 static void copy_threadref (threadref
* dest
, threadref
* src
);
1152 static int threadmatch (threadref
* dest
, threadref
* src
);
1154 static char *pack_threadinfo_request (char *pkt
, int mode
, threadref
* id
);
1156 static int remote_unpack_thread_info_response (char *pkt
,
1157 threadref
* expectedref
,
1158 struct gdb_ext_thread_info
1162 static int remote_get_threadinfo (threadref
* threadid
, int fieldset
, /*TAG mask */
1163 struct gdb_ext_thread_info
*info
);
1165 static char *pack_threadlist_request (char *pkt
, int startflag
,
1167 threadref
* nextthread
);
1169 static int parse_threadlist_response (char *pkt
,
1171 threadref
* original_echo
,
1172 threadref
* resultlist
, int *doneflag
);
1174 static int remote_get_threadlist (int startflag
,
1175 threadref
* nextthread
,
1178 int *result_count
, threadref
* threadlist
);
1180 typedef int (*rmt_thread_action
) (threadref
* ref
, void *context
);
1182 static int remote_threadlist_iterator (rmt_thread_action stepfunction
,
1183 void *context
, int looplimit
);
1185 static int remote_newthread_step (threadref
* ref
, void *context
);
1187 /* encode 64 bits in 16 chars of hex */
1189 static const char hexchars
[] = "0123456789abcdef";
1192 ishex (int ch
, int *val
)
1194 if ((ch
>= 'a') && (ch
<= 'f'))
1196 *val
= ch
- 'a' + 10;
1199 if ((ch
>= 'A') && (ch
<= 'F'))
1201 *val
= ch
- 'A' + 10;
1204 if ((ch
>= '0') && (ch
<= '9'))
1215 if (ch
>= 'a' && ch
<= 'f')
1216 return ch
- 'a' + 10;
1217 if (ch
>= '0' && ch
<= '9')
1219 if (ch
>= 'A' && ch
<= 'F')
1220 return ch
- 'A' + 10;
1225 stub_unpack_int (char *buff
, int fieldlength
)
1232 nibble
= stubhex (*buff
++);
1236 retval
= retval
<< 4;
1242 unpack_varlen_hex (char *buff
, /* packet to parse */
1248 while (ishex (*buff
, &nibble
))
1251 retval
= retval
<< 4;
1252 retval
|= nibble
& 0x0f;
1259 unpack_nibble (char *buf
, int *val
)
1261 ishex (*buf
++, val
);
1266 pack_nibble (char *buf
, int nibble
)
1268 *buf
++ = hexchars
[(nibble
& 0x0f)];
1273 pack_hex_byte (char *pkt
, int byte
)
1275 *pkt
++ = hexchars
[(byte
>> 4) & 0xf];
1276 *pkt
++ = hexchars
[(byte
& 0xf)];
1281 unpack_byte (char *buf
, int *value
)
1283 *value
= stub_unpack_int (buf
, 2);
1288 pack_int (char *buf
, int value
)
1290 buf
= pack_hex_byte (buf
, (value
>> 24) & 0xff);
1291 buf
= pack_hex_byte (buf
, (value
>> 16) & 0xff);
1292 buf
= pack_hex_byte (buf
, (value
>> 8) & 0x0ff);
1293 buf
= pack_hex_byte (buf
, (value
& 0xff));
1298 unpack_int (char *buf
, int *value
)
1300 *value
= stub_unpack_int (buf
, 8);
1304 #if 0 /* currently unused, uncomment when needed */
1305 static char *pack_string (char *pkt
, char *string
);
1308 pack_string (char *pkt
, char *string
)
1313 len
= strlen (string
);
1315 len
= 200; /* Bigger than most GDB packets, junk??? */
1316 pkt
= pack_hex_byte (pkt
, len
);
1320 if ((ch
== '\0') || (ch
== '#'))
1321 ch
= '*'; /* Protect encapsulation */
1326 #endif /* 0 (unused) */
1329 unpack_string (char *src
, char *dest
, int length
)
1338 pack_threadid (char *pkt
, threadref
*id
)
1341 unsigned char *altid
;
1343 altid
= (unsigned char *) id
;
1344 limit
= pkt
+ BUF_THREAD_ID_SIZE
;
1346 pkt
= pack_hex_byte (pkt
, *altid
++);
1352 unpack_threadid (char *inbuf
, threadref
*id
)
1355 char *limit
= inbuf
+ BUF_THREAD_ID_SIZE
;
1358 altref
= (char *) id
;
1360 while (inbuf
< limit
)
1362 x
= stubhex (*inbuf
++);
1363 y
= stubhex (*inbuf
++);
1364 *altref
++ = (x
<< 4) | y
;
1369 /* Externally, threadrefs are 64 bits but internally, they are still
1370 ints. This is due to a mismatch of specifications. We would like
1371 to use 64bit thread references internally. This is an adapter
1375 int_to_threadref (threadref
*id
, int value
)
1377 unsigned char *scan
;
1379 scan
= (unsigned char *) id
;
1385 *scan
++ = (value
>> 24) & 0xff;
1386 *scan
++ = (value
>> 16) & 0xff;
1387 *scan
++ = (value
>> 8) & 0xff;
1388 *scan
++ = (value
& 0xff);
1392 threadref_to_int (threadref
*ref
)
1395 unsigned char *scan
;
1397 scan
= (char *) ref
;
1401 value
= (value
<< 8) | ((*scan
++) & 0xff);
1406 copy_threadref (threadref
*dest
, threadref
*src
)
1409 unsigned char *csrc
, *cdest
;
1411 csrc
= (unsigned char *) src
;
1412 cdest
= (unsigned char *) dest
;
1419 threadmatch (threadref
*dest
, threadref
*src
)
1421 /* things are broken right now, so just assume we got a match */
1423 unsigned char *srcp
, *destp
;
1425 srcp
= (char *) src
;
1426 destp
= (char *) dest
;
1430 result
&= (*srcp
++ == *destp
++) ? 1 : 0;
1437 threadid:1, # always request threadid
1444 /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */
1447 pack_threadinfo_request (char *pkt
, int mode
, threadref
*id
)
1449 *pkt
++ = 'q'; /* Info Query */
1450 *pkt
++ = 'P'; /* process or thread info */
1451 pkt
= pack_int (pkt
, mode
); /* mode */
1452 pkt
= pack_threadid (pkt
, id
); /* threadid */
1453 *pkt
= '\0'; /* terminate */
1457 /* These values tag the fields in a thread info response packet */
1458 /* Tagging the fields allows us to request specific fields and to
1459 add more fields as time goes by */
1461 #define TAG_THREADID 1 /* Echo the thread identifier */
1462 #define TAG_EXISTS 2 /* Is this process defined enough to
1463 fetch registers and its stack */
1464 #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */
1465 #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is */
1466 #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about
1470 remote_unpack_thread_info_response (char *pkt
, threadref
*expectedref
,
1471 struct gdb_ext_thread_info
*info
)
1473 struct remote_state
*rs
= get_remote_state ();
1477 char *limit
= pkt
+ (rs
->remote_packet_size
); /* plausable parsing limit */
1480 /* info->threadid = 0; FIXME: implement zero_threadref */
1482 info
->display
[0] = '\0';
1483 info
->shortname
[0] = '\0';
1484 info
->more_display
[0] = '\0';
1486 /* Assume the characters indicating the packet type have been stripped */
1487 pkt
= unpack_int (pkt
, &mask
); /* arg mask */
1488 pkt
= unpack_threadid (pkt
, &ref
);
1491 warning ("Incomplete response to threadinfo request\n");
1492 if (!threadmatch (&ref
, expectedref
))
1493 { /* This is an answer to a different request */
1494 warning ("ERROR RMT Thread info mismatch\n");
1497 copy_threadref (&info
->threadid
, &ref
);
1499 /* Loop on tagged fields , try to bail if somthing goes wrong */
1501 while ((pkt
< limit
) && mask
&& *pkt
) /* packets are terminated with nulls */
1503 pkt
= unpack_int (pkt
, &tag
); /* tag */
1504 pkt
= unpack_byte (pkt
, &length
); /* length */
1505 if (!(tag
& mask
)) /* tags out of synch with mask */
1507 warning ("ERROR RMT: threadinfo tag mismatch\n");
1511 if (tag
== TAG_THREADID
)
1515 warning ("ERROR RMT: length of threadid is not 16\n");
1519 pkt
= unpack_threadid (pkt
, &ref
);
1520 mask
= mask
& ~TAG_THREADID
;
1523 if (tag
== TAG_EXISTS
)
1525 info
->active
= stub_unpack_int (pkt
, length
);
1527 mask
= mask
& ~(TAG_EXISTS
);
1530 warning ("ERROR RMT: 'exists' length too long\n");
1536 if (tag
== TAG_THREADNAME
)
1538 pkt
= unpack_string (pkt
, &info
->shortname
[0], length
);
1539 mask
= mask
& ~TAG_THREADNAME
;
1542 if (tag
== TAG_DISPLAY
)
1544 pkt
= unpack_string (pkt
, &info
->display
[0], length
);
1545 mask
= mask
& ~TAG_DISPLAY
;
1548 if (tag
== TAG_MOREDISPLAY
)
1550 pkt
= unpack_string (pkt
, &info
->more_display
[0], length
);
1551 mask
= mask
& ~TAG_MOREDISPLAY
;
1554 warning ("ERROR RMT: unknown thread info tag\n");
1555 break; /* Not a tag we know about */
1561 remote_get_threadinfo (threadref
*threadid
, int fieldset
, /* TAG mask */
1562 struct gdb_ext_thread_info
*info
)
1564 struct remote_state
*rs
= get_remote_state ();
1566 char *threadinfo_pkt
= alloca (rs
->remote_packet_size
);
1568 pack_threadinfo_request (threadinfo_pkt
, fieldset
, threadid
);
1569 putpkt (threadinfo_pkt
);
1570 getpkt (threadinfo_pkt
, (rs
->remote_packet_size
), 0);
1571 result
= remote_unpack_thread_info_response (threadinfo_pkt
+ 2, threadid
,
1576 /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */
1579 pack_threadlist_request (char *pkt
, int startflag
, int threadcount
,
1580 threadref
*nextthread
)
1582 *pkt
++ = 'q'; /* info query packet */
1583 *pkt
++ = 'L'; /* Process LIST or threadLIST request */
1584 pkt
= pack_nibble (pkt
, startflag
); /* initflag 1 bytes */
1585 pkt
= pack_hex_byte (pkt
, threadcount
); /* threadcount 2 bytes */
1586 pkt
= pack_threadid (pkt
, nextthread
); /* 64 bit thread identifier */
1591 /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */
1594 parse_threadlist_response (char *pkt
, int result_limit
,
1595 threadref
*original_echo
, threadref
*resultlist
,
1598 struct remote_state
*rs
= get_remote_state ();
1600 int count
, resultcount
, done
;
1603 /* Assume the 'q' and 'M chars have been stripped. */
1604 limit
= pkt
+ ((rs
->remote_packet_size
) - BUF_THREAD_ID_SIZE
); /* done parse past here */
1605 pkt
= unpack_byte (pkt
, &count
); /* count field */
1606 pkt
= unpack_nibble (pkt
, &done
);
1607 /* The first threadid is the argument threadid. */
1608 pkt
= unpack_threadid (pkt
, original_echo
); /* should match query packet */
1609 while ((count
-- > 0) && (pkt
< limit
))
1611 pkt
= unpack_threadid (pkt
, resultlist
++);
1612 if (resultcount
++ >= result_limit
)
1621 remote_get_threadlist (int startflag
, threadref
*nextthread
, int result_limit
,
1622 int *done
, int *result_count
, threadref
*threadlist
)
1624 struct remote_state
*rs
= get_remote_state ();
1625 static threadref echo_nextthread
;
1626 char *threadlist_packet
= alloca (rs
->remote_packet_size
);
1627 char *t_response
= alloca (rs
->remote_packet_size
);
1630 /* Trancate result limit to be smaller than the packet size */
1631 if ((((result_limit
+ 1) * BUF_THREAD_ID_SIZE
) + 10) >= (rs
->remote_packet_size
))
1632 result_limit
= ((rs
->remote_packet_size
) / BUF_THREAD_ID_SIZE
) - 2;
1634 pack_threadlist_request (threadlist_packet
,
1635 startflag
, result_limit
, nextthread
);
1636 putpkt (threadlist_packet
);
1637 getpkt (t_response
, (rs
->remote_packet_size
), 0);
1640 parse_threadlist_response (t_response
+ 2, result_limit
, &echo_nextthread
,
1643 if (!threadmatch (&echo_nextthread
, nextthread
))
1645 /* FIXME: This is a good reason to drop the packet */
1646 /* Possably, there is a duplicate response */
1648 retransmit immediatly - race conditions
1649 retransmit after timeout - yes
1651 wait for packet, then exit
1653 warning ("HMM: threadlist did not echo arg thread, dropping it\n");
1654 return 0; /* I choose simply exiting */
1656 if (*result_count
<= 0)
1660 warning ("RMT ERROR : failed to get remote thread list\n");
1663 return result
; /* break; */
1665 if (*result_count
> result_limit
)
1668 warning ("RMT ERROR: threadlist response longer than requested\n");
1674 /* This is the interface between remote and threads, remotes upper interface */
1676 /* remote_find_new_threads retrieves the thread list and for each
1677 thread in the list, looks up the thread in GDB's internal list,
1678 ading the thread if it does not already exist. This involves
1679 getting partial thread lists from the remote target so, polling the
1680 quit_flag is required. */
1683 /* About this many threadisds fit in a packet. */
1685 #define MAXTHREADLISTRESULTS 32
1688 remote_threadlist_iterator (rmt_thread_action stepfunction
, void *context
,
1691 int done
, i
, result_count
;
1695 static threadref nextthread
;
1696 static threadref resultthreadlist
[MAXTHREADLISTRESULTS
];
1701 if (loopcount
++ > looplimit
)
1704 warning ("Remote fetch threadlist -infinite loop-\n");
1707 if (!remote_get_threadlist (startflag
, &nextthread
, MAXTHREADLISTRESULTS
,
1708 &done
, &result_count
, resultthreadlist
))
1713 /* clear for later iterations */
1715 /* Setup to resume next batch of thread references, set nextthread. */
1716 if (result_count
>= 1)
1717 copy_threadref (&nextthread
, &resultthreadlist
[result_count
- 1]);
1719 while (result_count
--)
1720 if (!(result
= (*stepfunction
) (&resultthreadlist
[i
++], context
)))
1727 remote_newthread_step (threadref
*ref
, void *context
)
1731 ptid
= pid_to_ptid (threadref_to_int (ref
));
1733 if (!in_thread_list (ptid
))
1735 return 1; /* continue iterator */
1738 #define CRAZY_MAX_THREADS 1000
1741 remote_current_thread (ptid_t oldpid
)
1743 struct remote_state
*rs
= get_remote_state ();
1744 char *buf
= alloca (rs
->remote_packet_size
);
1747 getpkt (buf
, (rs
->remote_packet_size
), 0);
1748 if (buf
[0] == 'Q' && buf
[1] == 'C')
1749 return pid_to_ptid (strtol (&buf
[2], NULL
, 16));
1754 /* Find new threads for info threads command.
1755 * Original version, using John Metzler's thread protocol.
1759 remote_find_new_threads (void)
1761 remote_threadlist_iterator (remote_newthread_step
, 0,
1763 if (PIDGET (inferior_ptid
) == MAGIC_NULL_PID
) /* ack ack ack */
1764 inferior_ptid
= remote_current_thread (inferior_ptid
);
1768 * Find all threads for info threads command.
1769 * Uses new thread protocol contributed by Cisco.
1770 * Falls back and attempts to use the older method (above)
1771 * if the target doesn't respond to the new method.
1775 remote_threads_info (void)
1777 struct remote_state
*rs
= get_remote_state ();
1778 char *buf
= alloca (rs
->remote_packet_size
);
1782 if (remote_desc
== 0) /* paranoia */
1783 error ("Command can only be used when connected to the remote target.");
1785 if (use_threadinfo_query
)
1787 putpkt ("qfThreadInfo");
1789 getpkt (bufp
, (rs
->remote_packet_size
), 0);
1790 if (bufp
[0] != '\0') /* q packet recognized */
1792 while (*bufp
++ == 'm') /* reply contains one or more TID */
1796 tid
= strtol (bufp
, &bufp
, 16);
1797 if (tid
!= 0 && !in_thread_list (pid_to_ptid (tid
)))
1798 add_thread (pid_to_ptid (tid
));
1800 while (*bufp
++ == ','); /* comma-separated list */
1801 putpkt ("qsThreadInfo");
1803 getpkt (bufp
, (rs
->remote_packet_size
), 0);
1809 /* Else fall back to old method based on jmetzler protocol. */
1810 use_threadinfo_query
= 0;
1811 remote_find_new_threads ();
1816 * Collect a descriptive string about the given thread.
1817 * The target may say anything it wants to about the thread
1818 * (typically info about its blocked / runnable state, name, etc.).
1819 * This string will appear in the info threads display.
1821 * Optional: targets are not required to implement this function.
1825 remote_threads_extra_info (struct thread_info
*tp
)
1827 struct remote_state
*rs
= get_remote_state ();
1831 struct gdb_ext_thread_info threadinfo
;
1832 static char display_buf
[100]; /* arbitrary... */
1833 char *bufp
= alloca (rs
->remote_packet_size
);
1834 int n
= 0; /* position in display_buf */
1836 if (remote_desc
== 0) /* paranoia */
1837 internal_error (__FILE__
, __LINE__
,
1838 "remote_threads_extra_info");
1840 if (use_threadextra_query
)
1842 sprintf (bufp
, "qThreadExtraInfo,%x", PIDGET (tp
->ptid
));
1844 getpkt (bufp
, (rs
->remote_packet_size
), 0);
1847 n
= min (strlen (bufp
) / 2, sizeof (display_buf
));
1848 result
= hex2bin (bufp
, display_buf
, n
);
1849 display_buf
[result
] = '\0';
1854 /* If the above query fails, fall back to the old method. */
1855 use_threadextra_query
= 0;
1856 set
= TAG_THREADID
| TAG_EXISTS
| TAG_THREADNAME
1857 | TAG_MOREDISPLAY
| TAG_DISPLAY
;
1858 int_to_threadref (&id
, PIDGET (tp
->ptid
));
1859 if (remote_get_threadinfo (&id
, set
, &threadinfo
))
1860 if (threadinfo
.active
)
1862 if (*threadinfo
.shortname
)
1863 n
+= sprintf(&display_buf
[0], " Name: %s,", threadinfo
.shortname
);
1864 if (*threadinfo
.display
)
1865 n
+= sprintf(&display_buf
[n
], " State: %s,", threadinfo
.display
);
1866 if (*threadinfo
.more_display
)
1867 n
+= sprintf(&display_buf
[n
], " Priority: %s",
1868 threadinfo
.more_display
);
1872 /* for purely cosmetic reasons, clear up trailing commas */
1873 if (',' == display_buf
[n
-1])
1874 display_buf
[n
-1] = ' ';
1883 /* Restart the remote side; this is an extended protocol operation. */
1886 extended_remote_restart (void)
1888 struct remote_state
*rs
= get_remote_state ();
1889 char *buf
= alloca (rs
->remote_packet_size
);
1891 /* Send the restart command; for reasons I don't understand the
1892 remote side really expects a number after the "R". */
1894 sprintf (&buf
[1], "%x", 0);
1897 /* Now query for status so this looks just like we restarted
1898 gdbserver from scratch. */
1900 getpkt (buf
, (rs
->remote_packet_size
), 0);
1903 /* Clean up connection to a remote debugger. */
1906 remote_close (int quitting
)
1909 serial_close (remote_desc
);
1913 /* Query the remote side for the text, data and bss offsets. */
1918 struct remote_state
*rs
= get_remote_state ();
1919 char *buf
= alloca (rs
->remote_packet_size
);
1922 CORE_ADDR text_addr
, data_addr
, bss_addr
;
1923 struct section_offsets
*offs
;
1925 putpkt ("qOffsets");
1927 getpkt (buf
, (rs
->remote_packet_size
), 0);
1929 if (buf
[0] == '\000')
1930 return; /* Return silently. Stub doesn't support
1934 warning ("Remote failure reply: %s", buf
);
1938 /* Pick up each field in turn. This used to be done with scanf, but
1939 scanf will make trouble if CORE_ADDR size doesn't match
1940 conversion directives correctly. The following code will work
1941 with any size of CORE_ADDR. */
1942 text_addr
= data_addr
= bss_addr
= 0;
1946 if (strncmp (ptr
, "Text=", 5) == 0)
1949 /* Don't use strtol, could lose on big values. */
1950 while (*ptr
&& *ptr
!= ';')
1951 text_addr
= (text_addr
<< 4) + fromhex (*ptr
++);
1956 if (!lose
&& strncmp (ptr
, ";Data=", 6) == 0)
1959 while (*ptr
&& *ptr
!= ';')
1960 data_addr
= (data_addr
<< 4) + fromhex (*ptr
++);
1965 if (!lose
&& strncmp (ptr
, ";Bss=", 5) == 0)
1968 while (*ptr
&& *ptr
!= ';')
1969 bss_addr
= (bss_addr
<< 4) + fromhex (*ptr
++);
1975 error ("Malformed response to offset query, %s", buf
);
1977 if (symfile_objfile
== NULL
)
1980 offs
= ((struct section_offsets
*)
1981 alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
)));
1982 memcpy (offs
, symfile_objfile
->section_offsets
,
1983 SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
));
1985 offs
->offsets
[SECT_OFF_TEXT (symfile_objfile
)] = text_addr
;
1987 /* This is a temporary kludge to force data and bss to use the same offsets
1988 because that's what nlmconv does now. The real solution requires changes
1989 to the stub and remote.c that I don't have time to do right now. */
1991 offs
->offsets
[SECT_OFF_DATA (symfile_objfile
)] = data_addr
;
1992 offs
->offsets
[SECT_OFF_BSS (symfile_objfile
)] = data_addr
;
1994 objfile_relocate (symfile_objfile
, offs
);
1998 * Cisco version of section offsets:
2000 * Instead of having GDB query the target for the section offsets,
2001 * Cisco lets the target volunteer the information! It's also in
2002 * a different format, so here are the functions that will decode
2003 * a section offset packet from a Cisco target.
2007 * Function: remote_cisco_section_offsets
2009 * Returns: zero for success, non-zero for failure
2013 remote_cisco_section_offsets (bfd_vma text_addr
,
2016 bfd_signed_vma
*text_offs
,
2017 bfd_signed_vma
*data_offs
,
2018 bfd_signed_vma
*bss_offs
)
2020 bfd_vma text_base
, data_base
, bss_base
;
2021 struct minimal_symbol
*start
;
2026 if (symfile_objfile
== NULL
)
2027 return -1; /* no can do nothin' */
2029 start
= lookup_minimal_symbol ("_start", NULL
, NULL
);
2031 return -1; /* Can't find "_start" symbol */
2033 data_base
= bss_base
= 0;
2034 text_base
= SYMBOL_VALUE_ADDRESS (start
);
2036 abfd
= symfile_objfile
->obfd
;
2037 for (sect
= abfd
->sections
;
2041 const char *p
= bfd_get_section_name (abfd
, sect
);
2043 if (strcmp (p
+ len
- 4, "data") == 0) /* ends in "data" */
2044 if (data_base
== 0 ||
2045 data_base
> bfd_get_section_vma (abfd
, sect
))
2046 data_base
= bfd_get_section_vma (abfd
, sect
);
2047 if (strcmp (p
+ len
- 3, "bss") == 0) /* ends in "bss" */
2048 if (bss_base
== 0 ||
2049 bss_base
> bfd_get_section_vma (abfd
, sect
))
2050 bss_base
= bfd_get_section_vma (abfd
, sect
);
2052 *text_offs
= text_addr
- text_base
;
2053 *data_offs
= data_addr
- data_base
;
2054 *bss_offs
= bss_addr
- bss_base
;
2059 sprintf (tmp
, "VMA: text = 0x");
2060 sprintf_vma (tmp
+ strlen (tmp
), text_addr
);
2061 sprintf (tmp
+ strlen (tmp
), " data = 0x");
2062 sprintf_vma (tmp
+ strlen (tmp
), data_addr
);
2063 sprintf (tmp
+ strlen (tmp
), " bss = 0x");
2064 sprintf_vma (tmp
+ strlen (tmp
), bss_addr
);
2065 fputs_filtered (tmp
, gdb_stdlog
);
2066 fprintf_filtered (gdb_stdlog
,
2067 "Reloc offset: text = 0x%s data = 0x%s bss = 0x%s\n",
2068 paddr_nz (*text_offs
),
2069 paddr_nz (*data_offs
),
2070 paddr_nz (*bss_offs
));
2077 * Function: remote_cisco_objfile_relocate
2079 * Relocate the symbol file for a remote target.
2083 remote_cisco_objfile_relocate (bfd_signed_vma text_off
, bfd_signed_vma data_off
,
2084 bfd_signed_vma bss_off
)
2086 struct section_offsets
*offs
;
2088 if (text_off
!= 0 || data_off
!= 0 || bss_off
!= 0)
2090 /* FIXME: This code assumes gdb-stabs.h is being used; it's
2091 broken for xcoff, dwarf, sdb-coff, etc. But there is no
2092 simple canonical representation for this stuff. */
2094 offs
= (struct section_offsets
*)
2095 alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
));
2096 memcpy (offs
, symfile_objfile
->section_offsets
,
2097 SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
));
2099 offs
->offsets
[SECT_OFF_TEXT (symfile_objfile
)] = text_off
;
2100 offs
->offsets
[SECT_OFF_DATA (symfile_objfile
)] = data_off
;
2101 offs
->offsets
[SECT_OFF_BSS (symfile_objfile
)] = bss_off
;
2103 /* First call the standard objfile_relocate. */
2104 objfile_relocate (symfile_objfile
, offs
);
2106 /* Now we need to fix up the section entries already attached to
2107 the exec target. These entries will control memory transfers
2108 from the exec file. */
2110 exec_set_section_offsets (text_off
, data_off
, bss_off
);
2114 /* Stub for catch_errors. */
2117 remote_start_remote_dummy (struct ui_out
*uiout
, void *dummy
)
2119 start_remote (); /* Initialize gdb process mechanisms */
2120 /* NOTE: Return something >=0. A -ve value is reserved for
2121 catch_exceptions. */
2126 remote_start_remote (struct ui_out
*uiout
, void *dummy
)
2128 immediate_quit
++; /* Allow user to interrupt it */
2130 /* Ack any packet which the remote side has already sent. */
2131 serial_write (remote_desc
, "+", 1);
2133 /* Let the stub know that we want it to return the thread. */
2136 inferior_ptid
= remote_current_thread (inferior_ptid
);
2138 get_offsets (); /* Get text, data & bss offsets */
2140 putpkt ("?"); /* initiate a query from remote machine */
2143 /* NOTE: See comment above in remote_start_remote_dummy(). This
2144 function returns something >=0. */
2145 return remote_start_remote_dummy (uiout
, dummy
);
2148 /* Open a connection to a remote debugger.
2149 NAME is the filename used for communication. */
2152 remote_open (char *name
, int from_tty
)
2154 remote_open_1 (name
, from_tty
, &remote_ops
, 0, 0);
2157 /* Just like remote_open, but with asynchronous support. */
2159 remote_async_open (char *name
, int from_tty
)
2161 remote_open_1 (name
, from_tty
, &remote_async_ops
, 0, 1);
2164 /* Open a connection to a remote debugger using the extended
2165 remote gdb protocol. NAME is the filename used for communication. */
2168 extended_remote_open (char *name
, int from_tty
)
2170 remote_open_1 (name
, from_tty
, &extended_remote_ops
, 1 /*extended_p */,
2174 /* Just like extended_remote_open, but with asynchronous support. */
2176 extended_remote_async_open (char *name
, int from_tty
)
2178 remote_open_1 (name
, from_tty
, &extended_async_remote_ops
,
2179 1 /*extended_p */, 1 /* async_p */);
2182 /* Generic code for opening a connection to a remote target. */
2185 init_all_packet_configs (void)
2188 update_packet_config (&remote_protocol_e
);
2189 update_packet_config (&remote_protocol_E
);
2190 update_packet_config (&remote_protocol_P
);
2191 update_packet_config (&remote_protocol_qSymbol
);
2192 update_packet_config (&remote_protocol_vcont
);
2193 for (i
= 0; i
< NR_Z_PACKET_TYPES
; i
++)
2194 update_packet_config (&remote_protocol_Z
[i
]);
2195 /* Force remote_write_bytes to check whether target supports binary
2197 update_packet_config (&remote_protocol_binary_download
);
2200 /* Symbol look-up. */
2203 remote_check_symbols (struct objfile
*objfile
)
2205 struct remote_state
*rs
= get_remote_state ();
2206 char *msg
, *reply
, *tmp
;
2207 struct minimal_symbol
*sym
;
2210 if (remote_protocol_qSymbol
.support
== PACKET_DISABLE
)
2213 msg
= alloca (rs
->remote_packet_size
);
2214 reply
= alloca (rs
->remote_packet_size
);
2216 /* Invite target to request symbol lookups. */
2218 putpkt ("qSymbol::");
2219 getpkt (reply
, (rs
->remote_packet_size
), 0);
2220 packet_ok (reply
, &remote_protocol_qSymbol
);
2222 while (strncmp (reply
, "qSymbol:", 8) == 0)
2225 end
= hex2bin (tmp
, msg
, strlen (tmp
) / 2);
2227 sym
= lookup_minimal_symbol (msg
, NULL
, NULL
);
2229 sprintf (msg
, "qSymbol::%s", &reply
[8]);
2231 sprintf (msg
, "qSymbol:%s:%s",
2232 paddr_nz (SYMBOL_VALUE_ADDRESS (sym
)),
2235 getpkt (reply
, (rs
->remote_packet_size
), 0);
2239 static struct serial
*
2240 remote_serial_open (char *name
)
2242 static int udp_warning
= 0;
2244 /* FIXME: Parsing NAME here is a hack. But we want to warn here instead
2245 of in ser-tcp.c, because it is the remote protocol assuming that the
2246 serial connection is reliable and not the serial connection promising
2248 if (!udp_warning
&& strncmp (name
, "udp:", 4) == 0)
2250 warning ("The remote protocol may be unreliable over UDP.");
2251 warning ("Some events may be lost, rendering further debugging "
2256 return serial_open (name
);
2260 remote_open_1 (char *name
, int from_tty
, struct target_ops
*target
,
2261 int extended_p
, int async_p
)
2264 struct remote_state
*rs
= get_remote_state ();
2266 error ("To open a remote debug connection, you need to specify what\n"
2267 "serial device is attached to the remote system\n"
2268 "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).");
2270 /* See FIXME above */
2272 wait_forever_enabled_p
= 1;
2274 target_preopen (from_tty
);
2276 unpush_target (target
);
2278 remote_desc
= remote_serial_open (name
);
2280 perror_with_name (name
);
2282 if (baud_rate
!= -1)
2284 if (serial_setbaudrate (remote_desc
, baud_rate
))
2286 /* The requested speed could not be set. Error out to
2287 top level after closing remote_desc. Take care to
2288 set remote_desc to NULL to avoid closing remote_desc
2290 serial_close (remote_desc
);
2292 perror_with_name (name
);
2296 serial_raw (remote_desc
);
2298 /* If there is something sitting in the buffer we might take it as a
2299 response to a command, which would be bad. */
2300 serial_flush_input (remote_desc
);
2304 puts_filtered ("Remote debugging using ");
2305 puts_filtered (name
);
2306 puts_filtered ("\n");
2308 push_target (target
); /* Switch to using remote target now */
2310 init_all_packet_configs ();
2312 general_thread
= -2;
2313 continue_thread
= -2;
2315 /* Probe for ability to use "ThreadInfo" query, as required. */
2316 use_threadinfo_query
= 1;
2317 use_threadextra_query
= 1;
2319 /* Without this, some commands which require an active target (such
2320 as kill) won't work. This variable serves (at least) double duty
2321 as both the pid of the target process (if it has such), and as a
2322 flag indicating that a target is active. These functions should
2323 be split out into seperate variables, especially since GDB will
2324 someday have a notion of debugging several processes. */
2326 inferior_ptid
= pid_to_ptid (MAGIC_NULL_PID
);
2330 /* With this target we start out by owning the terminal. */
2331 remote_async_terminal_ours_p
= 1;
2333 /* FIXME: cagney/1999-09-23: During the initial connection it is
2334 assumed that the target is already ready and able to respond to
2335 requests. Unfortunately remote_start_remote() eventually calls
2336 wait_for_inferior() with no timeout. wait_forever_enabled_p gets
2337 around this. Eventually a mechanism that allows
2338 wait_for_inferior() to expect/get timeouts will be
2340 wait_forever_enabled_p
= 0;
2343 #ifdef SOLIB_CREATE_INFERIOR_HOOK
2344 /* First delete any symbols previously loaded from shared libraries. */
2345 no_shared_libraries (NULL
, 0);
2348 /* Start the remote connection. If error() or QUIT, discard this
2349 target (we'd otherwise be in an inconsistent state) and then
2350 propogate the error on up the exception chain. This ensures that
2351 the caller doesn't stumble along blindly assuming that the
2352 function succeeded. The CLI doesn't have this problem but other
2353 UI's, such as MI do.
2355 FIXME: cagney/2002-05-19: Instead of re-throwing the exception,
2356 this function should return an error indication letting the
2357 caller restore the previous state. Unfortunately the command
2358 ``target remote'' is directly wired to this function making that
2359 impossible. On a positive note, the CLI side of this problem has
2360 been fixed - the function set_cmd_context() makes it possible for
2361 all the ``target ....'' commands to share a common callback
2362 function. See cli-dump.c. */
2363 ex
= catch_exceptions (uiout
,
2364 remote_start_remote
, NULL
,
2365 "Couldn't establish connection to remote"
2372 wait_forever_enabled_p
= 1;
2373 throw_exception (ex
);
2377 wait_forever_enabled_p
= 1;
2381 /* Tell the remote that we are using the extended protocol. */
2382 char *buf
= alloca (rs
->remote_packet_size
);
2384 getpkt (buf
, (rs
->remote_packet_size
), 0);
2386 #ifdef SOLIB_CREATE_INFERIOR_HOOK
2387 /* FIXME: need a master target_open vector from which all
2388 remote_opens can be called, so that stuff like this can
2389 go there. Failing that, the following code must be copied
2390 to the open function for any remote target that wants to
2391 support svr4 shared libraries. */
2393 /* Set up to detect and load shared libraries. */
2394 if (exec_bfd
) /* No use without an exec file. */
2396 SOLIB_CREATE_INFERIOR_HOOK (PIDGET (inferior_ptid
));
2397 remote_check_symbols (symfile_objfile
);
2402 /* This takes a program previously attached to and detaches it. After
2403 this is done, GDB can be used to debug some other program. We
2404 better not have left any breakpoints in the target program or it'll
2405 die when it hits one. */
2408 remote_detach (char *args
, int from_tty
)
2410 struct remote_state
*rs
= get_remote_state ();
2411 char *buf
= alloca (rs
->remote_packet_size
);
2414 error ("Argument given to \"detach\" when remotely debugging.");
2416 /* Tell the remote target to detach. */
2418 remote_send (buf
, (rs
->remote_packet_size
));
2420 /* Unregister the file descriptor from the event loop. */
2421 if (target_is_async_p ())
2422 serial_async (remote_desc
, NULL
, 0);
2424 target_mourn_inferior ();
2426 puts_filtered ("Ending remote debugging.\n");
2429 /* Same as remote_detach, but don't send the "D" packet; just disconnect. */
2432 remote_disconnect (char *args
, int from_tty
)
2434 struct remote_state
*rs
= get_remote_state ();
2435 char *buf
= alloca (rs
->remote_packet_size
);
2438 error ("Argument given to \"detach\" when remotely debugging.");
2440 /* Unregister the file descriptor from the event loop. */
2441 if (target_is_async_p ())
2442 serial_async (remote_desc
, NULL
, 0);
2444 target_mourn_inferior ();
2446 puts_filtered ("Ending remote debugging.\n");
2449 /* Convert hex digit A to a number. */
2454 if (a
>= '0' && a
<= '9')
2456 else if (a
>= 'a' && a
<= 'f')
2457 return a
- 'a' + 10;
2458 else if (a
>= 'A' && a
<= 'F')
2459 return a
- 'A' + 10;
2461 error ("Reply contains invalid hex digit %d", a
);
2465 hex2bin (const char *hex
, char *bin
, int count
)
2469 for (i
= 0; i
< count
; i
++)
2471 if (hex
[0] == 0 || hex
[1] == 0)
2473 /* Hex string is short, or of uneven length.
2474 Return the count that has been converted so far. */
2477 *bin
++ = fromhex (hex
[0]) * 16 + fromhex (hex
[1]);
2483 /* Convert number NIB to a hex digit. */
2491 return 'a' + nib
- 10;
2495 bin2hex (const char *bin
, char *hex
, int count
)
2498 /* May use a length, or a nul-terminated string as input. */
2500 count
= strlen (bin
);
2502 for (i
= 0; i
< count
; i
++)
2504 *hex
++ = tohex ((*bin
>> 4) & 0xf);
2505 *hex
++ = tohex (*bin
++ & 0xf);
2511 /* Check for the availability of vCont. This function should also check
2515 remote_vcont_probe (struct remote_state
*rs
, char *buf
)
2517 strcpy (buf
, "vCont?");
2519 getpkt (buf
, rs
->remote_packet_size
, 0);
2521 /* Make sure that the features we assume are supported. */
2522 if (strncmp (buf
, "vCont", 5) == 0)
2525 int support_s
, support_S
, support_c
, support_C
;
2531 while (p
&& *p
== ';')
2534 if (*p
== 's' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
2536 else if (*p
== 'S' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
2538 else if (*p
== 'c' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
2540 else if (*p
== 'C' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
2543 p
= strchr (p
, ';');
2546 /* If s, S, c, and C are not all supported, we can't use vCont. Clearing
2547 BUF will make packet_ok disable the packet. */
2548 if (!support_s
|| !support_S
|| !support_c
|| !support_C
)
2552 packet_ok (buf
, &remote_protocol_vcont
);
2555 /* Resume the remote inferior by using a "vCont" packet. The thread
2556 to be resumed is PTID; STEP and SIGGNAL indicate whether the
2557 resumed thread should be single-stepped and/or signalled. If PTID's
2558 PID is -1, then all threads are resumed; the thread to be stepped and/or
2559 signalled is given in the global INFERIOR_PTID. This function returns
2560 non-zero iff it resumes the inferior.
2562 This function issues a strict subset of all possible vCont commands at the
2566 remote_vcont_resume (ptid_t ptid
, int step
, enum target_signal siggnal
)
2568 struct remote_state
*rs
= get_remote_state ();
2569 int pid
= PIDGET (ptid
);
2570 char *buf
= NULL
, *outbuf
;
2571 struct cleanup
*old_cleanup
;
2573 buf
= xmalloc (rs
->remote_packet_size
);
2574 old_cleanup
= make_cleanup (xfree
, buf
);
2576 if (remote_protocol_vcont
.support
== PACKET_SUPPORT_UNKNOWN
)
2577 remote_vcont_probe (rs
, buf
);
2579 if (remote_protocol_vcont
.support
== PACKET_DISABLE
)
2581 do_cleanups (old_cleanup
);
2585 /* If we could generate a wider range of packets, we'd have to worry
2586 about overflowing BUF. Should there be a generic
2587 "multi-part-packet" packet? */
2589 if (PIDGET (inferior_ptid
) == MAGIC_NULL_PID
)
2591 /* MAGIC_NULL_PTID means that we don't have any active threads, so we
2592 don't have any PID numbers the inferior will understand. Make sure
2593 to only send forms that do not specify a PID. */
2594 if (step
&& siggnal
!= TARGET_SIGNAL_0
)
2595 outbuf
= xstrprintf ("vCont;S%02x", siggnal
);
2597 outbuf
= xstrprintf ("vCont;s");
2598 else if (siggnal
!= TARGET_SIGNAL_0
)
2599 outbuf
= xstrprintf ("vCont;C%02x", siggnal
);
2601 outbuf
= xstrprintf ("vCont;c");
2605 /* Resume all threads, with preference for INFERIOR_PTID. */
2606 if (step
&& siggnal
!= TARGET_SIGNAL_0
)
2607 outbuf
= xstrprintf ("vCont;S%02x:%x;c", siggnal
,
2608 PIDGET (inferior_ptid
));
2610 outbuf
= xstrprintf ("vCont;s:%x;c", PIDGET (inferior_ptid
));
2611 else if (siggnal
!= TARGET_SIGNAL_0
)
2612 outbuf
= xstrprintf ("vCont;C%02x:%x;c", siggnal
,
2613 PIDGET (inferior_ptid
));
2615 outbuf
= xstrprintf ("vCont;c");
2619 /* Scheduler locking; resume only PTID. */
2620 if (step
&& siggnal
!= TARGET_SIGNAL_0
)
2621 outbuf
= xstrprintf ("vCont;S%02x:%x", siggnal
, pid
);
2623 outbuf
= xstrprintf ("vCont;s:%x", pid
);
2624 else if (siggnal
!= TARGET_SIGNAL_0
)
2625 outbuf
= xstrprintf ("vCont;C%02x:%x", siggnal
, pid
);
2627 outbuf
= xstrprintf ("vCont;c:%x", pid
);
2630 gdb_assert (outbuf
&& strlen (outbuf
) < rs
->remote_packet_size
);
2631 make_cleanup (xfree
, outbuf
);
2635 do_cleanups (old_cleanup
);
2640 /* Tell the remote machine to resume. */
2642 static enum target_signal last_sent_signal
= TARGET_SIGNAL_0
;
2644 static int last_sent_step
;
2647 remote_resume (ptid_t ptid
, int step
, enum target_signal siggnal
)
2649 struct remote_state
*rs
= get_remote_state ();
2650 char *buf
= alloca (rs
->remote_packet_size
);
2651 int pid
= PIDGET (ptid
);
2654 last_sent_signal
= siggnal
;
2655 last_sent_step
= step
;
2657 /* A hook for when we need to do something at the last moment before
2659 if (target_resume_hook
)
2660 (*target_resume_hook
) ();
2662 /* The vCont packet doesn't need to specify threads via Hc. */
2663 if (remote_vcont_resume (ptid
, step
, siggnal
))
2666 /* All other supported resume packets do use Hc, so call set_thread. */
2668 set_thread (0, 0); /* run any thread */
2670 set_thread (pid
, 0); /* run this thread */
2672 /* The s/S/c/C packets do not return status. So if the target does
2673 not support the S or C packets, the debug agent returns an empty
2674 string which is detected in remote_wait(). This protocol defect
2675 is fixed in the e/E packets. */
2677 if (step
&& step_range_end
)
2679 /* If the target does not support the 'E' packet, we try the 'S'
2680 packet. Ideally we would fall back to the 'e' packet if that
2681 too is not supported. But that would require another copy of
2682 the code to issue the 'e' packet (and fall back to 's' if not
2683 supported) in remote_wait(). */
2685 if (siggnal
!= TARGET_SIGNAL_0
)
2687 if (remote_protocol_E
.support
!= PACKET_DISABLE
)
2691 *p
++ = tohex (((int) siggnal
>> 4) & 0xf);
2692 *p
++ = tohex (((int) siggnal
) & 0xf);
2694 p
+= hexnumstr (p
, (ULONGEST
) step_range_start
);
2696 p
+= hexnumstr (p
, (ULONGEST
) step_range_end
);
2700 getpkt (buf
, (rs
->remote_packet_size
), 0);
2702 if (packet_ok (buf
, &remote_protocol_E
) == PACKET_OK
)
2708 if (remote_protocol_e
.support
!= PACKET_DISABLE
)
2712 p
+= hexnumstr (p
, (ULONGEST
) step_range_start
);
2714 p
+= hexnumstr (p
, (ULONGEST
) step_range_end
);
2718 getpkt (buf
, (rs
->remote_packet_size
), 0);
2720 if (packet_ok (buf
, &remote_protocol_e
) == PACKET_OK
)
2726 if (siggnal
!= TARGET_SIGNAL_0
)
2728 buf
[0] = step
? 'S' : 'C';
2729 buf
[1] = tohex (((int) siggnal
>> 4) & 0xf);
2730 buf
[2] = tohex (((int) siggnal
) & 0xf);
2734 strcpy (buf
, step
? "s" : "c");
2739 /* Same as remote_resume, but with async support. */
2741 remote_async_resume (ptid_t ptid
, int step
, enum target_signal siggnal
)
2743 remote_resume (ptid
, step
, siggnal
);
2745 /* We are about to start executing the inferior, let's register it
2746 with the event loop. NOTE: this is the one place where all the
2747 execution commands end up. We could alternatively do this in each
2748 of the execution commands in infcmd.c.*/
2749 /* FIXME: ezannoni 1999-09-28: We may need to move this out of here
2750 into infcmd.c in order to allow inferior function calls to work
2751 NOT asynchronously. */
2752 if (event_loop_p
&& target_can_async_p ())
2753 target_async (inferior_event_handler
, 0);
2754 /* Tell the world that the target is now executing. */
2755 /* FIXME: cagney/1999-09-23: Is it the targets responsibility to set
2756 this? Instead, should the client of target just assume (for
2757 async targets) that the target is going to start executing? Is
2758 this information already found in the continuation block? */
2759 if (target_is_async_p ())
2760 target_executing
= 1;
2764 /* Set up the signal handler for SIGINT, while the target is
2765 executing, ovewriting the 'regular' SIGINT signal handler. */
2767 initialize_sigint_signal_handler (void)
2769 sigint_remote_token
=
2770 create_async_signal_handler (async_remote_interrupt
, NULL
);
2771 signal (SIGINT
, handle_remote_sigint
);
2774 /* Signal handler for SIGINT, while the target is executing. */
2776 handle_remote_sigint (int sig
)
2778 signal (sig
, handle_remote_sigint_twice
);
2779 sigint_remote_twice_token
=
2780 create_async_signal_handler (async_remote_interrupt_twice
, NULL
);
2781 mark_async_signal_handler_wrapper (sigint_remote_token
);
2784 /* Signal handler for SIGINT, installed after SIGINT has already been
2785 sent once. It will take effect the second time that the user sends
2788 handle_remote_sigint_twice (int sig
)
2790 signal (sig
, handle_sigint
);
2791 sigint_remote_twice_token
=
2792 create_async_signal_handler (inferior_event_handler_wrapper
, NULL
);
2793 mark_async_signal_handler_wrapper (sigint_remote_twice_token
);
2796 /* Perform the real interruption of the target execution, in response
2799 async_remote_interrupt (gdb_client_data arg
)
2802 fprintf_unfiltered (gdb_stdlog
, "remote_interrupt called\n");
2807 /* Perform interrupt, if the first attempt did not succeed. Just give
2808 up on the target alltogether. */
2810 async_remote_interrupt_twice (gdb_client_data arg
)
2813 fprintf_unfiltered (gdb_stdlog
, "remote_interrupt_twice called\n");
2814 /* Do something only if the target was not killed by the previous
2816 if (target_executing
)
2819 signal (SIGINT
, handle_remote_sigint
);
2823 /* Reinstall the usual SIGINT handlers, after the target has
2826 cleanup_sigint_signal_handler (void *dummy
)
2828 signal (SIGINT
, handle_sigint
);
2829 if (sigint_remote_twice_token
)
2830 delete_async_signal_handler ((struct async_signal_handler
**) & sigint_remote_twice_token
);
2831 if (sigint_remote_token
)
2832 delete_async_signal_handler ((struct async_signal_handler
**) & sigint_remote_token
);
2835 /* Send ^C to target to halt it. Target will respond, and send us a
2837 static void (*ofunc
) (int);
2839 /* The command line interface's stop routine. This function is installed
2840 as a signal handler for SIGINT. The first time a user requests a
2841 stop, we call remote_stop to send a break or ^C. If there is no
2842 response from the target (it didn't stop when the user requested it),
2843 we ask the user if he'd like to detach from the target. */
2845 remote_interrupt (int signo
)
2847 /* If this doesn't work, try more severe steps. */
2848 signal (signo
, remote_interrupt_twice
);
2851 fprintf_unfiltered (gdb_stdlog
, "remote_interrupt called\n");
2856 /* The user typed ^C twice. */
2859 remote_interrupt_twice (int signo
)
2861 signal (signo
, ofunc
);
2863 signal (signo
, remote_interrupt
);
2866 /* This is the generic stop called via the target vector. When a target
2867 interrupt is requested, either by the command line or the GUI, we
2868 will eventually end up here. */
2872 /* Send a break or a ^C, depending on user preference. */
2874 fprintf_unfiltered (gdb_stdlog
, "remote_stop called\n");
2877 serial_send_break (remote_desc
);
2879 serial_write (remote_desc
, "\003", 1);
2882 /* Ask the user what to do when an interrupt is received. */
2885 interrupt_query (void)
2887 target_terminal_ours ();
2889 if (query ("Interrupted while waiting for the program.\n\
2890 Give up (and stop debugging it)? "))
2892 target_mourn_inferior ();
2893 throw_exception (RETURN_QUIT
);
2896 target_terminal_inferior ();
2899 /* Enable/disable target terminal ownership. Most targets can use
2900 terminal groups to control terminal ownership. Remote targets are
2901 different in that explicit transfer of ownership to/from GDB/target
2905 remote_async_terminal_inferior (void)
2907 /* FIXME: cagney/1999-09-27: Shouldn't need to test for
2908 sync_execution here. This function should only be called when
2909 GDB is resuming the inferior in the forground. A background
2910 resume (``run&'') should leave GDB in control of the terminal and
2911 consequently should not call this code. */
2912 if (!sync_execution
)
2914 /* FIXME: cagney/1999-09-27: Closely related to the above. Make
2915 calls target_terminal_*() idenpotent. The event-loop GDB talking
2916 to an asynchronous target with a synchronous command calls this
2917 function from both event-top.c and infrun.c/infcmd.c. Once GDB
2918 stops trying to transfer the terminal to the target when it
2919 shouldn't this guard can go away. */
2920 if (!remote_async_terminal_ours_p
)
2922 delete_file_handler (input_fd
);
2923 remote_async_terminal_ours_p
= 0;
2924 initialize_sigint_signal_handler ();
2925 /* NOTE: At this point we could also register our selves as the
2926 recipient of all input. Any characters typed could then be
2927 passed on down to the target. */
2931 remote_async_terminal_ours (void)
2933 /* See FIXME in remote_async_terminal_inferior. */
2934 if (!sync_execution
)
2936 /* See FIXME in remote_async_terminal_inferior. */
2937 if (remote_async_terminal_ours_p
)
2939 cleanup_sigint_signal_handler (NULL
);
2940 add_file_handler (input_fd
, stdin_event_handler
, 0);
2941 remote_async_terminal_ours_p
= 1;
2944 /* If nonzero, ignore the next kill. */
2949 remote_console_output (char *msg
)
2953 for (p
= msg
; p
[0] && p
[1]; p
+= 2)
2956 char c
= fromhex (p
[0]) * 16 + fromhex (p
[1]);
2959 fputs_unfiltered (tb
, gdb_stdtarg
);
2961 gdb_flush (gdb_stdtarg
);
2964 /* Wait until the remote machine stops, then return,
2965 storing status in STATUS just as `wait' would.
2966 Returns "pid", which in the case of a multi-threaded
2967 remote OS, is the thread-id. */
2970 remote_wait (ptid_t ptid
, struct target_waitstatus
*status
)
2972 struct remote_state
*rs
= get_remote_state ();
2973 unsigned char *buf
= alloca (rs
->remote_packet_size
);
2974 ULONGEST thread_num
= -1;
2977 status
->kind
= TARGET_WAITKIND_EXITED
;
2978 status
->value
.integer
= 0;
2984 ofunc
= signal (SIGINT
, remote_interrupt
);
2985 getpkt (buf
, (rs
->remote_packet_size
), 1);
2986 signal (SIGINT
, ofunc
);
2988 /* This is a hook for when we need to do something (perhaps the
2989 collection of trace data) every time the target stops. */
2990 if (target_wait_loop_hook
)
2991 (*target_wait_loop_hook
) ();
2993 remote_stopped_by_watchpoint_p
= 0;
2997 case 'E': /* Error of some sort */
2998 warning ("Remote failure reply: %s", buf
);
3000 case 'F': /* File-I/O request */
3001 remote_fileio_request (buf
);
3003 case 'T': /* Status with PC, SP, FP, ... */
3006 char regs
[MAX_REGISTER_SIZE
];
3008 /* Expedited reply, containing Signal, {regno, reg} repeat */
3009 /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where
3011 n... = register number
3012 r... = register contents
3014 p
= &buf
[3]; /* after Txx */
3023 /* If the packet contains a register number save it in pnum
3024 and set p1 to point to the character following it.
3025 Otherwise p1 points to p. */
3027 /* If this packet is an awatch packet, don't parse the 'a'
3028 as a register number. */
3030 if (strncmp (p
, "awatch", strlen("awatch")) != 0)
3032 /* Read the ``P'' register number. */
3033 pnum
= strtol (p
, &p_temp
, 16);
3034 p1
= (unsigned char *) p_temp
;
3039 if (p1
== p
) /* No register number present here */
3041 p1
= (unsigned char *) strchr (p
, ':');
3043 warning ("Malformed packet(a) (missing colon): %s\n\
3046 if (strncmp (p
, "thread", p1
- p
) == 0)
3048 p_temp
= unpack_varlen_hex (++p1
, &thread_num
);
3049 record_currthread (thread_num
);
3050 p
= (unsigned char *) p_temp
;
3052 else if ((strncmp (p
, "watch", p1
- p
) == 0)
3053 || (strncmp (p
, "rwatch", p1
- p
) == 0)
3054 || (strncmp (p
, "awatch", p1
- p
) == 0))
3056 remote_stopped_by_watchpoint_p
= 1;
3057 p
= unpack_varlen_hex (++p1
, &addr
);
3058 remote_watch_data_address
= (CORE_ADDR
)addr
;
3062 /* Silently skip unknown optional info. */
3063 p_temp
= strchr (p1
+ 1, ';');
3065 p
= (unsigned char *) p_temp
;
3070 struct packet_reg
*reg
= packet_reg_from_pnum (rs
, pnum
);
3074 error ("Malformed packet(b) (missing colon): %s\nPacket: '%s'\n",
3078 error ("Remote sent bad register number %s: %s\nPacket: '%s'\n",
3079 phex_nz (pnum
, 0), p
, buf
);
3081 fieldsize
= hex2bin (p
, regs
, DEPRECATED_REGISTER_RAW_SIZE (reg
->regnum
));
3083 if (fieldsize
< DEPRECATED_REGISTER_RAW_SIZE (reg
->regnum
))
3084 warning ("Remote reply is too short: %s", buf
);
3085 supply_register (reg
->regnum
, regs
);
3089 error ("Remote register badly formatted: %s\nhere: %s", buf
, p
);
3093 case 'S': /* Old style status, just signal only */
3094 status
->kind
= TARGET_WAITKIND_STOPPED
;
3095 status
->value
.sig
= (enum target_signal
)
3096 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
3100 /* Export Cisco kernel mode as a convenience variable
3101 (so that it can be used in the GDB prompt if desired). */
3103 if (cisco_kernel_mode
== 1)
3104 set_internalvar (lookup_internalvar ("cisco_kernel_mode"),
3105 value_from_string ("PDEBUG-"));
3106 cisco_kernel_mode
= 0;
3107 thread_num
= strtol ((const char *) &buf
[4], NULL
, 16);
3108 record_currthread (thread_num
);
3110 else if (buf
[3] == 'k')
3112 /* Export Cisco kernel mode as a convenience variable
3113 (so that it can be used in the GDB prompt if desired). */
3115 if (cisco_kernel_mode
== 1)
3116 set_internalvar (lookup_internalvar ("cisco_kernel_mode"),
3117 value_from_string ("KDEBUG-"));
3118 cisco_kernel_mode
= 1;
3121 case 'N': /* Cisco special: status and offsets */
3123 bfd_vma text_addr
, data_addr
, bss_addr
;
3124 bfd_signed_vma text_off
, data_off
, bss_off
;
3127 status
->kind
= TARGET_WAITKIND_STOPPED
;
3128 status
->value
.sig
= (enum target_signal
)
3129 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
3131 if (symfile_objfile
== NULL
)
3133 warning ("Relocation packet received with no symbol file. \
3138 /* Relocate object file. Buffer format is NAATT;DD;BB
3139 * where AA is the signal number, TT is the new text
3140 * address, DD * is the new data address, and BB is the
3141 * new bss address. */
3144 text_addr
= strtoul (p
, (char **) &p1
, 16);
3145 if (p1
== p
|| *p1
!= ';')
3146 warning ("Malformed relocation packet: Packet '%s'", buf
);
3148 data_addr
= strtoul (p
, (char **) &p1
, 16);
3149 if (p1
== p
|| *p1
!= ';')
3150 warning ("Malformed relocation packet: Packet '%s'", buf
);
3152 bss_addr
= strtoul (p
, (char **) &p1
, 16);
3154 warning ("Malformed relocation packet: Packet '%s'", buf
);
3156 if (remote_cisco_section_offsets (text_addr
, data_addr
, bss_addr
,
3157 &text_off
, &data_off
, &bss_off
)
3159 if (text_off
!= 0 || data_off
!= 0 || bss_off
!= 0)
3160 remote_cisco_objfile_relocate (text_off
, data_off
, bss_off
);
3164 case 'W': /* Target exited */
3166 /* The remote process exited. */
3167 status
->kind
= TARGET_WAITKIND_EXITED
;
3168 status
->value
.integer
= (fromhex (buf
[1]) << 4) + fromhex (buf
[2]);
3172 status
->kind
= TARGET_WAITKIND_SIGNALLED
;
3173 status
->value
.sig
= (enum target_signal
)
3174 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
3178 case 'O': /* Console output */
3179 remote_console_output (buf
+ 1);
3182 if (last_sent_signal
!= TARGET_SIGNAL_0
)
3184 /* Zero length reply means that we tried 'S' or 'C' and
3185 the remote system doesn't support it. */
3186 target_terminal_ours_for_output ();
3188 ("Can't send signals to this remote system. %s not sent.\n",
3189 target_signal_to_name (last_sent_signal
));
3190 last_sent_signal
= TARGET_SIGNAL_0
;
3191 target_terminal_inferior ();
3193 strcpy ((char *) buf
, last_sent_step
? "s" : "c");
3194 putpkt ((char *) buf
);
3197 /* else fallthrough */
3199 warning ("Invalid remote reply: %s", buf
);
3204 if (thread_num
!= -1)
3206 return pid_to_ptid (thread_num
);
3208 return inferior_ptid
;
3211 /* Async version of remote_wait. */
3213 remote_async_wait (ptid_t ptid
, struct target_waitstatus
*status
)
3215 struct remote_state
*rs
= get_remote_state ();
3216 unsigned char *buf
= alloca (rs
->remote_packet_size
);
3217 ULONGEST thread_num
= -1;
3220 status
->kind
= TARGET_WAITKIND_EXITED
;
3221 status
->value
.integer
= 0;
3223 remote_stopped_by_watchpoint_p
= 0;
3229 if (!target_is_async_p ())
3230 ofunc
= signal (SIGINT
, remote_interrupt
);
3231 /* FIXME: cagney/1999-09-27: If we're in async mode we should
3232 _never_ wait for ever -> test on target_is_async_p().
3233 However, before we do that we need to ensure that the caller
3234 knows how to take the target into/out of async mode. */
3235 getpkt (buf
, (rs
->remote_packet_size
), wait_forever_enabled_p
);
3236 if (!target_is_async_p ())
3237 signal (SIGINT
, ofunc
);
3239 /* This is a hook for when we need to do something (perhaps the
3240 collection of trace data) every time the target stops. */
3241 if (target_wait_loop_hook
)
3242 (*target_wait_loop_hook
) ();
3246 case 'E': /* Error of some sort */
3247 warning ("Remote failure reply: %s", buf
);
3249 case 'F': /* File-I/O request */
3250 remote_fileio_request (buf
);
3252 case 'T': /* Status with PC, SP, FP, ... */
3255 char regs
[MAX_REGISTER_SIZE
];
3257 /* Expedited reply, containing Signal, {regno, reg} repeat */
3258 /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where
3260 n... = register number
3261 r... = register contents
3263 p
= &buf
[3]; /* after Txx */
3272 /* If the packet contains a register number, save it in pnum
3273 and set p1 to point to the character following it.
3274 Otherwise p1 points to p. */
3276 /* If this packet is an awatch packet, don't parse the 'a'
3277 as a register number. */
3279 if (!strncmp (p
, "awatch", strlen ("awatch")) != 0)
3281 /* Read the register number. */
3282 pnum
= strtol (p
, &p_temp
, 16);
3283 p1
= (unsigned char *) p_temp
;
3288 if (p1
== p
) /* No register number present here */
3290 p1
= (unsigned char *) strchr (p
, ':');
3292 error ("Malformed packet(a) (missing colon): %s\nPacket: '%s'\n",
3294 if (strncmp (p
, "thread", p1
- p
) == 0)
3296 p_temp
= unpack_varlen_hex (++p1
, &thread_num
);
3297 record_currthread (thread_num
);
3298 p
= (unsigned char *) p_temp
;
3300 else if ((strncmp (p
, "watch", p1
- p
) == 0)
3301 || (strncmp (p
, "rwatch", p1
- p
) == 0)
3302 || (strncmp (p
, "awatch", p1
- p
) == 0))
3304 remote_stopped_by_watchpoint_p
= 1;
3305 p
= unpack_varlen_hex (++p1
, &addr
);
3306 remote_watch_data_address
= (CORE_ADDR
)addr
;
3310 /* Silently skip unknown optional info. */
3311 p_temp
= (unsigned char *) strchr (p1
+ 1, ';');
3319 struct packet_reg
*reg
= packet_reg_from_pnum (rs
, pnum
);
3322 error ("Malformed packet(b) (missing colon): %s\nPacket: '%s'\n",
3326 error ("Remote sent bad register number %ld: %s\nPacket: '%s'\n",
3329 fieldsize
= hex2bin (p
, regs
, DEPRECATED_REGISTER_RAW_SIZE (reg
->regnum
));
3331 if (fieldsize
< DEPRECATED_REGISTER_RAW_SIZE (reg
->regnum
))
3332 warning ("Remote reply is too short: %s", buf
);
3333 supply_register (reg
->regnum
, regs
);
3337 error ("Remote register badly formatted: %s\nhere: %s",
3342 case 'S': /* Old style status, just signal only */
3343 status
->kind
= TARGET_WAITKIND_STOPPED
;
3344 status
->value
.sig
= (enum target_signal
)
3345 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
3349 /* Export Cisco kernel mode as a convenience variable
3350 (so that it can be used in the GDB prompt if desired). */
3352 if (cisco_kernel_mode
== 1)
3353 set_internalvar (lookup_internalvar ("cisco_kernel_mode"),
3354 value_from_string ("PDEBUG-"));
3355 cisco_kernel_mode
= 0;
3356 thread_num
= strtol ((const char *) &buf
[4], NULL
, 16);
3357 record_currthread (thread_num
);
3359 else if (buf
[3] == 'k')
3361 /* Export Cisco kernel mode as a convenience variable
3362 (so that it can be used in the GDB prompt if desired). */
3364 if (cisco_kernel_mode
== 1)
3365 set_internalvar (lookup_internalvar ("cisco_kernel_mode"),
3366 value_from_string ("KDEBUG-"));
3367 cisco_kernel_mode
= 1;
3370 case 'N': /* Cisco special: status and offsets */
3372 bfd_vma text_addr
, data_addr
, bss_addr
;
3373 bfd_signed_vma text_off
, data_off
, bss_off
;
3376 status
->kind
= TARGET_WAITKIND_STOPPED
;
3377 status
->value
.sig
= (enum target_signal
)
3378 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
3380 if (symfile_objfile
== NULL
)
3382 warning ("Relocation packet recieved with no symbol file. \
3387 /* Relocate object file. Buffer format is NAATT;DD;BB
3388 * where AA is the signal number, TT is the new text
3389 * address, DD * is the new data address, and BB is the
3390 * new bss address. */
3393 text_addr
= strtoul (p
, (char **) &p1
, 16);
3394 if (p1
== p
|| *p1
!= ';')
3395 warning ("Malformed relocation packet: Packet '%s'", buf
);
3397 data_addr
= strtoul (p
, (char **) &p1
, 16);
3398 if (p1
== p
|| *p1
!= ';')
3399 warning ("Malformed relocation packet: Packet '%s'", buf
);
3401 bss_addr
= strtoul (p
, (char **) &p1
, 16);
3403 warning ("Malformed relocation packet: Packet '%s'", buf
);
3405 if (remote_cisco_section_offsets (text_addr
, data_addr
, bss_addr
,
3406 &text_off
, &data_off
, &bss_off
)
3408 if (text_off
!= 0 || data_off
!= 0 || bss_off
!= 0)
3409 remote_cisco_objfile_relocate (text_off
, data_off
, bss_off
);
3413 case 'W': /* Target exited */
3415 /* The remote process exited. */
3416 status
->kind
= TARGET_WAITKIND_EXITED
;
3417 status
->value
.integer
= (fromhex (buf
[1]) << 4) + fromhex (buf
[2]);
3421 status
->kind
= TARGET_WAITKIND_SIGNALLED
;
3422 status
->value
.sig
= (enum target_signal
)
3423 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
3427 case 'O': /* Console output */
3428 remote_console_output (buf
+ 1);
3429 /* Return immediately to the event loop. The event loop will
3430 still be waiting on the inferior afterwards. */
3431 status
->kind
= TARGET_WAITKIND_IGNORE
;
3434 if (last_sent_signal
!= TARGET_SIGNAL_0
)
3436 /* Zero length reply means that we tried 'S' or 'C' and
3437 the remote system doesn't support it. */
3438 target_terminal_ours_for_output ();
3440 ("Can't send signals to this remote system. %s not sent.\n",
3441 target_signal_to_name (last_sent_signal
));
3442 last_sent_signal
= TARGET_SIGNAL_0
;
3443 target_terminal_inferior ();
3445 strcpy ((char *) buf
, last_sent_step
? "s" : "c");
3446 putpkt ((char *) buf
);
3449 /* else fallthrough */
3451 warning ("Invalid remote reply: %s", buf
);
3456 if (thread_num
!= -1)
3458 return pid_to_ptid (thread_num
);
3460 return inferior_ptid
;
3463 /* Number of bytes of registers this stub implements. */
3465 static int register_bytes_found
;
3467 /* Read the remote registers into the block REGS. */
3468 /* Currently we just read all the registers, so we don't use regnum. */
3471 remote_fetch_registers (int regnum
)
3473 struct remote_state
*rs
= get_remote_state ();
3474 char *buf
= alloca (rs
->remote_packet_size
);
3477 char *regs
= alloca (rs
->sizeof_g_packet
);
3479 set_thread (PIDGET (inferior_ptid
), 1);
3483 struct packet_reg
*reg
= packet_reg_from_regnum (rs
, regnum
);
3484 gdb_assert (reg
!= NULL
);
3485 if (!reg
->in_g_packet
)
3486 internal_error (__FILE__
, __LINE__
,
3487 "Attempt to fetch a non G-packet register when this "
3488 "remote.c does not support the p-packet.");
3492 remote_send (buf
, (rs
->remote_packet_size
));
3494 /* Save the size of the packet sent to us by the target. Its used
3495 as a heuristic when determining the max size of packets that the
3496 target can safely receive. */
3497 if ((rs
->actual_register_packet_size
) == 0)
3498 (rs
->actual_register_packet_size
) = strlen (buf
);
3500 /* Unimplemented registers read as all bits zero. */
3501 memset (regs
, 0, rs
->sizeof_g_packet
);
3503 /* We can get out of synch in various cases. If the first character
3504 in the buffer is not a hex character, assume that has happened
3505 and try to fetch another packet to read. */
3506 while ((buf
[0] < '0' || buf
[0] > '9')
3507 && (buf
[0] < 'a' || buf
[0] > 'f')
3508 && buf
[0] != 'x') /* New: unavailable register value */
3511 fprintf_unfiltered (gdb_stdlog
,
3512 "Bad register packet; fetching a new packet\n");
3513 getpkt (buf
, (rs
->remote_packet_size
), 0);
3516 /* Reply describes registers byte by byte, each byte encoded as two
3517 hex characters. Suck them all up, then supply them to the
3518 register cacheing/storage mechanism. */
3521 for (i
= 0; i
< rs
->sizeof_g_packet
; i
++)
3527 warning ("Remote reply is of odd length: %s", buf
);
3528 /* Don't change register_bytes_found in this case, and don't
3529 print a second warning. */
3532 if (p
[0] == 'x' && p
[1] == 'x')
3533 regs
[i
] = 0; /* 'x' */
3535 regs
[i
] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
3539 if (i
!= register_bytes_found
)
3541 register_bytes_found
= i
;
3542 if (REGISTER_BYTES_OK_P ()
3543 && !REGISTER_BYTES_OK (i
))
3544 warning ("Remote reply is too short: %s", buf
);
3550 for (i
= 0; i
< NUM_REGS
+ NUM_PSEUDO_REGS
; i
++)
3552 struct packet_reg
*r
= &rs
->regs
[i
];
3555 if (r
->offset
* 2 >= strlen (buf
))
3556 /* A short packet that didn't include the register's
3557 value, this implies that the register is zero (and
3558 not that the register is unavailable). Supply that
3560 regcache_raw_supply (current_regcache
, r
->regnum
, NULL
);
3561 else if (buf
[r
->offset
* 2] == 'x')
3563 gdb_assert (r
->offset
* 2 < strlen (buf
));
3564 /* The register isn't available, mark it as such (at
3565 the same time setting the value to zero). */
3566 regcache_raw_supply (current_regcache
, r
->regnum
, NULL
);
3567 set_register_cached (i
, -1);
3570 regcache_raw_supply (current_regcache
, r
->regnum
,
3577 /* Prepare to store registers. Since we may send them all (using a
3578 'G' request), we have to read out the ones we don't want to change
3582 remote_prepare_to_store (void)
3584 struct remote_state
*rs
= get_remote_state ();
3586 char buf
[MAX_REGISTER_SIZE
];
3588 /* Make sure the entire registers array is valid. */
3589 switch (remote_protocol_P
.support
)
3591 case PACKET_DISABLE
:
3592 case PACKET_SUPPORT_UNKNOWN
:
3593 /* Make sure all the necessary registers are cached. */
3594 for (i
= 0; i
< NUM_REGS
; i
++)
3595 if (rs
->regs
[i
].in_g_packet
)
3596 regcache_raw_read (current_regcache
, rs
->regs
[i
].regnum
, buf
);
3603 /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF
3604 packet was not recognized. */
3607 store_register_using_P (int regnum
)
3609 struct remote_state
*rs
= get_remote_state ();
3610 struct packet_reg
*reg
= packet_reg_from_regnum (rs
, regnum
);
3611 /* Try storing a single register. */
3612 char *buf
= alloca (rs
->remote_packet_size
);
3613 char regp
[MAX_REGISTER_SIZE
];
3617 sprintf (buf
, "P%s=", phex_nz (reg
->pnum
, 0));
3618 p
= buf
+ strlen (buf
);
3619 regcache_collect (reg
->regnum
, regp
);
3620 bin2hex (regp
, p
, DEPRECATED_REGISTER_RAW_SIZE (reg
->regnum
));
3621 remote_send (buf
, rs
->remote_packet_size
);
3623 return buf
[0] != '\0';
3627 /* Store register REGNUM, or all registers if REGNUM == -1, from the contents
3628 of the register cache buffer. FIXME: ignores errors. */
3631 remote_store_registers (int regnum
)
3633 struct remote_state
*rs
= get_remote_state ();
3639 set_thread (PIDGET (inferior_ptid
), 1);
3643 switch (remote_protocol_P
.support
)
3645 case PACKET_DISABLE
:
3648 if (store_register_using_P (regnum
))
3651 error ("Protocol error: P packet not recognized by stub");
3652 case PACKET_SUPPORT_UNKNOWN
:
3653 if (store_register_using_P (regnum
))
3655 /* The stub recognized the 'P' packet. Remember this. */
3656 remote_protocol_P
.support
= PACKET_ENABLE
;
3661 /* The stub does not support the 'P' packet. Use 'G'
3662 instead, and don't try using 'P' in the future (it
3663 will just waste our time). */
3664 remote_protocol_P
.support
= PACKET_DISABLE
;
3670 /* Extract all the registers in the regcache copying them into a
3674 regs
= alloca (rs
->sizeof_g_packet
);
3675 memset (regs
, rs
->sizeof_g_packet
, 0);
3676 for (i
= 0; i
< NUM_REGS
+ NUM_PSEUDO_REGS
; i
++)
3678 struct packet_reg
*r
= &rs
->regs
[i
];
3680 regcache_collect (r
->regnum
, regs
+ r
->offset
);
3684 /* Command describes registers byte by byte,
3685 each byte encoded as two hex characters. */
3686 buf
= alloca (rs
->remote_packet_size
);
3689 /* remote_prepare_to_store insures that register_bytes_found gets set. */
3690 bin2hex (regs
, p
, register_bytes_found
);
3691 remote_send (buf
, (rs
->remote_packet_size
));
3695 /* Return the number of hex digits in num. */
3698 hexnumlen (ULONGEST num
)
3702 for (i
= 0; num
!= 0; i
++)
3708 /* Set BUF to the minimum number of hex digits representing NUM. */
3711 hexnumstr (char *buf
, ULONGEST num
)
3713 int len
= hexnumlen (num
);
3714 return hexnumnstr (buf
, num
, len
);
3718 /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */
3721 hexnumnstr (char *buf
, ULONGEST num
, int width
)
3727 for (i
= width
- 1; i
>= 0; i
--)
3729 buf
[i
] = "0123456789abcdef"[(num
& 0xf)];
3736 /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */
3739 remote_address_masked (CORE_ADDR addr
)
3741 if (remote_address_size
> 0
3742 && remote_address_size
< (sizeof (ULONGEST
) * 8))
3744 /* Only create a mask when that mask can safely be constructed
3745 in a ULONGEST variable. */
3747 mask
= (mask
<< remote_address_size
) - 1;
3753 /* Determine whether the remote target supports binary downloading.
3754 This is accomplished by sending a no-op memory write of zero length
3755 to the target at the specified address. It does not suffice to send
3756 the whole packet, since many stubs strip the eighth bit and subsequently
3757 compute a wrong checksum, which causes real havoc with remote_write_bytes.
3759 NOTE: This can still lose if the serial line is not eight-bit
3760 clean. In cases like this, the user should clear "remote
3764 check_binary_download (CORE_ADDR addr
)
3766 struct remote_state
*rs
= get_remote_state ();
3767 switch (remote_protocol_binary_download
.support
)
3769 case PACKET_DISABLE
:
3773 case PACKET_SUPPORT_UNKNOWN
:
3775 char *buf
= alloca (rs
->remote_packet_size
);
3780 p
+= hexnumstr (p
, (ULONGEST
) addr
);
3782 p
+= hexnumstr (p
, (ULONGEST
) 0);
3786 putpkt_binary (buf
, (int) (p
- buf
));
3787 getpkt (buf
, (rs
->remote_packet_size
), 0);
3792 fprintf_unfiltered (gdb_stdlog
,
3793 "binary downloading NOT suppported by target\n");
3794 remote_protocol_binary_download
.support
= PACKET_DISABLE
;
3799 fprintf_unfiltered (gdb_stdlog
,
3800 "binary downloading suppported by target\n");
3801 remote_protocol_binary_download
.support
= PACKET_ENABLE
;
3808 /* Write memory data directly to the remote machine.
3809 This does not inform the data cache; the data cache uses this.
3810 MEMADDR is the address in the remote memory space.
3811 MYADDR is the address of the buffer in our space.
3812 LEN is the number of bytes.
3814 Returns number of bytes transferred, or 0 (setting errno) for
3815 error. Only transfer a single packet. */
3818 remote_write_bytes (CORE_ADDR memaddr
, char *myaddr
, int len
)
3822 unsigned char *plen
;
3828 unsigned char *payload_start
;
3830 /* Verify that the target can support a binary download. */
3831 check_binary_download (memaddr
);
3833 /* Compute the size, and then allocate space for the largest
3834 possible packet. Include space for an extra trailing NUL. */
3835 sizeof_buf
= get_memory_write_packet_size () + 1;
3836 buf
= alloca (sizeof_buf
);
3838 /* Compute the size of the actual payload by subtracting out the
3839 packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */
3840 payload_size
= (get_memory_write_packet_size () - (strlen ("$M,:#NN")
3841 + hexnumlen (memaddr
)
3842 + hexnumlen (len
)));
3844 /* Construct the packet header: "[MX]<memaddr>,<len>:". */
3846 /* Append "[XM]". Compute a best guess of the number of bytes
3847 actually transfered. */
3849 switch (remote_protocol_binary_download
.support
)
3853 /* Best guess at number of bytes that will fit. */
3854 todo
= min (len
, payload_size
);
3856 case PACKET_DISABLE
:
3858 /* num bytes that will fit */
3859 todo
= min (len
, payload_size
/ 2);
3861 case PACKET_SUPPORT_UNKNOWN
:
3862 internal_error (__FILE__
, __LINE__
,
3863 "remote_write_bytes: bad internal state");
3865 internal_error (__FILE__
, __LINE__
, "bad switch");
3868 /* Append "<memaddr>". */
3869 memaddr
= remote_address_masked (memaddr
);
3870 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
3875 /* Append <len>. Retain the location/size of <len>. It may need to
3876 be adjusted once the packet body has been created. */
3878 plenlen
= hexnumstr (p
, (ULONGEST
) todo
);
3885 /* Append the packet body. */
3887 switch (remote_protocol_binary_download
.support
)
3890 /* Binary mode. Send target system values byte by byte, in
3891 increasing byte addresses. Only escape certain critical
3894 (nr_bytes
< todo
) && (p
- payload_start
) < payload_size
;
3897 switch (myaddr
[nr_bytes
] & 0xff)
3902 /* These must be escaped */
3904 *p
++ = (myaddr
[nr_bytes
] & 0xff) ^ 0x20;
3907 *p
++ = myaddr
[nr_bytes
] & 0xff;
3911 if (nr_bytes
< todo
)
3913 /* Escape chars have filled up the buffer prematurely,
3914 and we have actually sent fewer bytes than planned.
3915 Fix-up the length field of the packet. Use the same
3916 number of characters as before. */
3917 plen
+= hexnumnstr (plen
, (ULONGEST
) nr_bytes
, plenlen
);
3918 *plen
= ':'; /* overwrite \0 from hexnumnstr() */
3921 case PACKET_DISABLE
:
3922 /* Normal mode: Send target system values byte by byte, in
3923 increasing byte addresses. Each byte is encoded as a two hex
3925 nr_bytes
= bin2hex (myaddr
, p
, todo
);
3928 case PACKET_SUPPORT_UNKNOWN
:
3929 internal_error (__FILE__
, __LINE__
,
3930 "remote_write_bytes: bad internal state");
3932 internal_error (__FILE__
, __LINE__
, "bad switch");
3935 putpkt_binary (buf
, (int) (p
- buf
));
3936 getpkt (buf
, sizeof_buf
, 0);
3940 /* There is no correspondance between what the remote protocol
3941 uses for errors and errno codes. We would like a cleaner way
3942 of representing errors (big enough to include errno codes,
3943 bfd_error codes, and others). But for now just return EIO. */
3948 /* Return NR_BYTES, not TODO, in case escape chars caused us to send fewer
3949 bytes than we'd planned. */
3953 /* Read memory data directly from the remote machine.
3954 This does not use the data cache; the data cache uses this.
3955 MEMADDR is the address in the remote memory space.
3956 MYADDR is the address of the buffer in our space.
3957 LEN is the number of bytes.
3959 Returns number of bytes transferred, or 0 for error. */
3961 /* NOTE: cagney/1999-10-18: This function (and its siblings in other
3962 remote targets) shouldn't attempt to read the entire buffer.
3963 Instead it should read a single packet worth of data and then
3964 return the byte size of that packet to the caller. The caller (its
3965 caller and its callers caller ;-) already contains code for
3966 handling partial reads. */
3969 remote_read_bytes (CORE_ADDR memaddr
, char *myaddr
, int len
)
3972 int max_buf_size
; /* Max size of packet output buffer */
3976 /* Create a buffer big enough for this packet. */
3977 max_buf_size
= get_memory_read_packet_size ();
3978 sizeof_buf
= max_buf_size
+ 1; /* Space for trailing NUL */
3979 buf
= alloca (sizeof_buf
);
3988 todo
= min (len
, max_buf_size
/ 2); /* num bytes that will fit */
3990 /* construct "m"<memaddr>","<len>" */
3991 /* sprintf (buf, "m%lx,%x", (unsigned long) memaddr, todo); */
3992 memaddr
= remote_address_masked (memaddr
);
3995 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
3997 p
+= hexnumstr (p
, (ULONGEST
) todo
);
4001 getpkt (buf
, sizeof_buf
, 0);
4004 && isxdigit (buf
[1]) && isxdigit (buf
[2])
4007 /* There is no correspondance between what the remote protocol uses
4008 for errors and errno codes. We would like a cleaner way of
4009 representing errors (big enough to include errno codes, bfd_error
4010 codes, and others). But for now just return EIO. */
4015 /* Reply describes memory byte by byte,
4016 each byte encoded as two hex characters. */
4019 if ((i
= hex2bin (p
, myaddr
, todo
)) < todo
)
4021 /* Reply is short. This means that we were able to read
4022 only part of what we wanted to. */
4023 return i
+ (origlen
- len
);
4032 /* Read or write LEN bytes from inferior memory at MEMADDR,
4033 transferring to or from debugger address BUFFER. Write to inferior if
4034 SHOULD_WRITE is nonzero. Returns length of data written or read; 0
4035 for error. TARGET is unused. */
4038 remote_xfer_memory (CORE_ADDR mem_addr
, char *buffer
, int mem_len
,
4039 int should_write
, struct mem_attrib
*attrib
,
4040 struct target_ops
*target
)
4042 CORE_ADDR targ_addr
;
4046 /* Should this be the selected frame? */
4047 gdbarch_remote_translate_xfer_address (current_gdbarch
, current_regcache
,
4049 &targ_addr
, &targ_len
);
4054 res
= remote_write_bytes (targ_addr
, buffer
, targ_len
);
4056 res
= remote_read_bytes (targ_addr
, buffer
, targ_len
);
4062 remote_files_info (struct target_ops
*ignore
)
4064 puts_filtered ("Debugging a target over a serial line.\n");
4067 /* Stuff for dealing with the packets which are part of this protocol.
4068 See comment at top of file for details. */
4070 /* Read a single character from the remote end, masking it down to 7 bits. */
4073 readchar (int timeout
)
4077 ch
= serial_readchar (remote_desc
, timeout
);
4082 switch ((enum serial_rc
) ch
)
4085 target_mourn_inferior ();
4086 error ("Remote connection closed");
4089 perror_with_name ("Remote communication error");
4091 case SERIAL_TIMEOUT
:
4097 /* Send the command in BUF to the remote machine, and read the reply
4098 into BUF. Report an error if we get an error reply. */
4101 remote_send (char *buf
,
4105 getpkt (buf
, sizeof_buf
, 0);
4108 error ("Remote failure reply: %s", buf
);
4111 /* Display a null-terminated packet on stdout, for debugging, using C
4115 print_packet (char *buf
)
4117 puts_filtered ("\"");
4118 fputstr_filtered (buf
, '"', gdb_stdout
);
4119 puts_filtered ("\"");
4125 return putpkt_binary (buf
, strlen (buf
));
4128 /* Send a packet to the remote machine, with error checking. The data
4129 of the packet is in BUF. The string in BUF can be at most (rs->remote_packet_size) - 5
4130 to account for the $, # and checksum, and for a possible /0 if we are
4131 debugging (remote_debug) and want to print the sent packet as a string */
4134 putpkt_binary (char *buf
, int cnt
)
4136 struct remote_state
*rs
= get_remote_state ();
4138 unsigned char csum
= 0;
4139 char *buf2
= alloca (cnt
+ 6);
4140 long sizeof_junkbuf
= (rs
->remote_packet_size
);
4141 char *junkbuf
= alloca (sizeof_junkbuf
);
4147 /* Copy the packet into buffer BUF2, encapsulating it
4148 and giving it a checksum. */
4153 for (i
= 0; i
< cnt
; i
++)
4159 *p
++ = tohex ((csum
>> 4) & 0xf);
4160 *p
++ = tohex (csum
& 0xf);
4162 /* Send it over and over until we get a positive ack. */
4166 int started_error_output
= 0;
4171 fprintf_unfiltered (gdb_stdlog
, "Sending packet: ");
4172 fputstrn_unfiltered (buf2
, p
- buf2
, 0, gdb_stdlog
);
4173 fprintf_unfiltered (gdb_stdlog
, "...");
4174 gdb_flush (gdb_stdlog
);
4176 if (serial_write (remote_desc
, buf2
, p
- buf2
))
4177 perror_with_name ("putpkt: write failed");
4179 /* read until either a timeout occurs (-2) or '+' is read */
4182 ch
= readchar (remote_timeout
);
4190 case SERIAL_TIMEOUT
:
4192 if (started_error_output
)
4194 putchar_unfiltered ('\n');
4195 started_error_output
= 0;
4204 fprintf_unfiltered (gdb_stdlog
, "Ack\n");
4208 fprintf_unfiltered (gdb_stdlog
, "Nak\n");
4209 case SERIAL_TIMEOUT
:
4213 break; /* Retransmit buffer */
4217 fprintf_unfiltered (gdb_stdlog
, "Packet instead of Ack, ignoring it\n");
4218 /* It's probably an old response, and we're out of sync.
4219 Just gobble up the packet and ignore it. */
4220 read_frame (junkbuf
, sizeof_junkbuf
);
4221 continue; /* Now, go look for + */
4226 if (!started_error_output
)
4228 started_error_output
= 1;
4229 fprintf_unfiltered (gdb_stdlog
, "putpkt: Junk: ");
4231 fputc_unfiltered (ch
& 0177, gdb_stdlog
);
4235 break; /* Here to retransmit */
4239 /* This is wrong. If doing a long backtrace, the user should be
4240 able to get out next time we call QUIT, without anything as
4241 violent as interrupt_query. If we want to provide a way out of
4242 here without getting to the next QUIT, it should be based on
4243 hitting ^C twice as in remote_wait. */
4253 static int remote_cisco_mode
;
4255 /* Come here after finding the start of the frame. Collect the rest
4256 into BUF, verifying the checksum, length, and handling run-length
4257 compression. No more than sizeof_buf-1 characters are read so that
4258 the buffer can be NUL terminated.
4260 Returns -1 on error, number of characters in buffer (ignoring the
4261 trailing NULL) on success. (could be extended to return one of the
4262 SERIAL status indications). */
4265 read_frame (char *buf
,
4277 /* ASSERT (bc < sizeof_buf - 1) - space for trailing NUL */
4278 c
= readchar (remote_timeout
);
4281 case SERIAL_TIMEOUT
:
4283 fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog
);
4287 fputs_filtered ("Saw new packet start in middle of old one\n",
4289 return -1; /* Start a new packet, count retries */
4292 unsigned char pktcsum
;
4298 check_0
= readchar (remote_timeout
);
4300 check_1
= readchar (remote_timeout
);
4302 if (check_0
== SERIAL_TIMEOUT
|| check_1
== SERIAL_TIMEOUT
)
4305 fputs_filtered ("Timeout in checksum, retrying\n", gdb_stdlog
);
4308 else if (check_0
< 0 || check_1
< 0)
4311 fputs_filtered ("Communication error in checksum\n", gdb_stdlog
);
4315 pktcsum
= (fromhex (check_0
) << 4) | fromhex (check_1
);
4316 if (csum
== pktcsum
)
4321 fprintf_filtered (gdb_stdlog
,
4322 "Bad checksum, sentsum=0x%x, csum=0x%x, buf=",
4324 fputs_filtered (buf
, gdb_stdlog
);
4325 fputs_filtered ("\n", gdb_stdlog
);
4327 /* Number of characters in buffer ignoring trailing
4331 case '*': /* Run length encoding */
4336 if (remote_cisco_mode
== 0)
4338 c
= readchar (remote_timeout
);
4340 repeat
= c
- ' ' + 3; /* Compute repeat count */
4344 /* Cisco's run-length encoding variant uses two
4345 hex chars to represent the repeat count. */
4347 c
= readchar (remote_timeout
);
4349 repeat
= fromhex (c
) << 4;
4350 c
= readchar (remote_timeout
);
4352 repeat
+= fromhex (c
);
4355 /* The character before ``*'' is repeated. */
4357 if (repeat
> 0 && repeat
<= 255
4359 && bc
+ repeat
- 1 < sizeof_buf
- 1)
4361 memset (&buf
[bc
], buf
[bc
- 1], repeat
);
4367 printf_filtered ("Repeat count %d too large for buffer: ", repeat
);
4368 puts_filtered (buf
);
4369 puts_filtered ("\n");
4373 if (bc
< sizeof_buf
- 1)
4381 puts_filtered ("Remote packet too long: ");
4382 puts_filtered (buf
);
4383 puts_filtered ("\n");
4390 /* Read a packet from the remote machine, with error checking, and
4391 store it in BUF. If FOREVER, wait forever rather than timing out;
4392 this is used (in synchronous mode) to wait for a target that is is
4393 executing user code to stop. */
4394 /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we
4395 don't have to change all the calls to getpkt to deal with the
4396 return value, because at the moment I don't know what the right
4397 thing to do it for those. */
4405 timed_out
= getpkt_sane (buf
, sizeof_buf
, forever
);
4409 /* Read a packet from the remote machine, with error checking, and
4410 store it in BUF. If FOREVER, wait forever rather than timing out;
4411 this is used (in synchronous mode) to wait for a target that is is
4412 executing user code to stop. If FOREVER == 0, this function is
4413 allowed to time out gracefully and return an indication of this to
4416 getpkt_sane (char *buf
,
4425 strcpy (buf
, "timeout");
4429 timeout
= watchdog
> 0 ? watchdog
: -1;
4433 timeout
= remote_timeout
;
4437 for (tries
= 1; tries
<= MAX_TRIES
; tries
++)
4439 /* This can loop forever if the remote side sends us characters
4440 continuously, but if it pauses, we'll get a zero from readchar
4441 because of timeout. Then we'll count that as a retry. */
4443 /* Note that we will only wait forever prior to the start of a packet.
4444 After that, we expect characters to arrive at a brisk pace. They
4445 should show up within remote_timeout intervals. */
4449 c
= readchar (timeout
);
4451 if (c
== SERIAL_TIMEOUT
)
4453 if (forever
) /* Watchdog went off? Kill the target. */
4456 target_mourn_inferior ();
4457 error ("Watchdog has expired. Target detached.\n");
4460 fputs_filtered ("Timed out.\n", gdb_stdlog
);
4466 /* We've found the start of a packet, now collect the data. */
4468 val
= read_frame (buf
, sizeof_buf
);
4474 fprintf_unfiltered (gdb_stdlog
, "Packet received: ");
4475 fputstr_unfiltered (buf
, 0, gdb_stdlog
);
4476 fprintf_unfiltered (gdb_stdlog
, "\n");
4478 serial_write (remote_desc
, "+", 1);
4482 /* Try the whole thing again. */
4484 serial_write (remote_desc
, "-", 1);
4487 /* We have tried hard enough, and just can't receive the packet. Give up. */
4489 printf_unfiltered ("Ignoring packet error, continuing...\n");
4490 serial_write (remote_desc
, "+", 1);
4497 /* For some mysterious reason, wait_for_inferior calls kill instead of
4498 mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */
4502 target_mourn_inferior ();
4506 /* Use catch_errors so the user can quit from gdb even when we aren't on
4507 speaking terms with the remote system. */
4508 catch_errors ((catch_errors_ftype
*) putpkt
, "k", "", RETURN_MASK_ERROR
);
4510 /* Don't wait for it to die. I'm not really sure it matters whether
4511 we do or not. For the existing stubs, kill is a noop. */
4512 target_mourn_inferior ();
4515 /* Async version of remote_kill. */
4517 remote_async_kill (void)
4519 /* Unregister the file descriptor from the event loop. */
4520 if (target_is_async_p ())
4521 serial_async (remote_desc
, NULL
, 0);
4523 /* For some mysterious reason, wait_for_inferior calls kill instead of
4524 mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */
4528 target_mourn_inferior ();
4532 /* Use catch_errors so the user can quit from gdb even when we aren't on
4533 speaking terms with the remote system. */
4534 catch_errors ((catch_errors_ftype
*) putpkt
, "k", "", RETURN_MASK_ERROR
);
4536 /* Don't wait for it to die. I'm not really sure it matters whether
4537 we do or not. For the existing stubs, kill is a noop. */
4538 target_mourn_inferior ();
4544 remote_mourn_1 (&remote_ops
);
4548 remote_async_mourn (void)
4550 remote_mourn_1 (&remote_async_ops
);
4554 extended_remote_mourn (void)
4556 /* We do _not_ want to mourn the target like this; this will
4557 remove the extended remote target from the target stack,
4558 and the next time the user says "run" it'll fail.
4560 FIXME: What is the right thing to do here? */
4562 remote_mourn_1 (&extended_remote_ops
);
4566 /* Worker function for remote_mourn. */
4568 remote_mourn_1 (struct target_ops
*target
)
4570 unpush_target (target
);
4571 generic_mourn_inferior ();
4574 /* In the extended protocol we want to be able to do things like
4575 "run" and have them basically work as expected. So we need
4576 a special create_inferior function.
4578 FIXME: One day add support for changing the exec file
4579 we're debugging, arguments and an environment. */
4582 extended_remote_create_inferior (char *exec_file
, char *args
, char **env
)
4584 /* Rip out the breakpoints; we'll reinsert them after restarting
4585 the remote server. */
4586 remove_breakpoints ();
4588 /* Now restart the remote server. */
4589 extended_remote_restart ();
4591 /* Now put the breakpoints back in. This way we're safe if the
4592 restart function works via a unix fork on the remote side. */
4593 insert_breakpoints ();
4595 /* Clean up from the last time we were running. */
4596 clear_proceed_status ();
4598 /* Let the remote process run. */
4599 proceed (-1, TARGET_SIGNAL_0
, 0);
4602 /* Async version of extended_remote_create_inferior. */
4604 extended_remote_async_create_inferior (char *exec_file
, char *args
, char **env
)
4606 /* Rip out the breakpoints; we'll reinsert them after restarting
4607 the remote server. */
4608 remove_breakpoints ();
4610 /* If running asynchronously, register the target file descriptor
4611 with the event loop. */
4612 if (event_loop_p
&& target_can_async_p ())
4613 target_async (inferior_event_handler
, 0);
4615 /* Now restart the remote server. */
4616 extended_remote_restart ();
4618 /* Now put the breakpoints back in. This way we're safe if the
4619 restart function works via a unix fork on the remote side. */
4620 insert_breakpoints ();
4622 /* Clean up from the last time we were running. */
4623 clear_proceed_status ();
4625 /* Let the remote process run. */
4626 proceed (-1, TARGET_SIGNAL_0
, 0);
4630 /* On some machines, e.g. 68k, we may use a different breakpoint
4631 instruction than other targets; in those use
4632 DEPRECATED_REMOTE_BREAKPOINT instead of just BREAKPOINT_FROM_PC.
4633 Also, bi-endian targets may define
4634 DEPRECATED_LITTLE_REMOTE_BREAKPOINT and
4635 DEPRECATED_BIG_REMOTE_BREAKPOINT. If none of these are defined, we
4636 just call the standard routines that are in mem-break.c. */
4638 /* NOTE: cagney/2003-06-08: This is silly. A remote and simulator
4639 target should use an identical BREAKPOINT_FROM_PC. As for native,
4640 the ARCH-OS-tdep.c code can override the default. */
4642 #if defined (DEPRECATED_LITTLE_REMOTE_BREAKPOINT) && defined (DEPRECATED_BIG_REMOTE_BREAKPOINT) && !defined(DEPRECATED_REMOTE_BREAKPOINT)
4643 #define DEPRECATED_REMOTE_BREAKPOINT
4646 #ifdef DEPRECATED_REMOTE_BREAKPOINT
4648 /* If the target isn't bi-endian, just pretend it is. */
4649 #if !defined (DEPRECATED_LITTLE_REMOTE_BREAKPOINT) && !defined (DEPRECATED_BIG_REMOTE_BREAKPOINT)
4650 #define DEPRECATED_LITTLE_REMOTE_BREAKPOINT DEPRECATED_REMOTE_BREAKPOINT
4651 #define DEPRECATED_BIG_REMOTE_BREAKPOINT DEPRECATED_REMOTE_BREAKPOINT
4654 static unsigned char big_break_insn
[] = DEPRECATED_BIG_REMOTE_BREAKPOINT
;
4655 static unsigned char little_break_insn
[] = DEPRECATED_LITTLE_REMOTE_BREAKPOINT
;
4657 #endif /* DEPRECATED_REMOTE_BREAKPOINT */
4659 /* Insert a breakpoint on targets that don't have any better
4660 breakpoint support. We read the contents of the target location
4661 and stash it, then overwrite it with a breakpoint instruction.
4662 ADDR is the target location in the target machine. CONTENTS_CACHE
4663 is a pointer to memory allocated for saving the target contents.
4664 It is guaranteed by the caller to be long enough to save the number
4665 of bytes returned by BREAKPOINT_FROM_PC. */
4668 remote_insert_breakpoint (CORE_ADDR addr
, char *contents_cache
)
4670 struct remote_state
*rs
= get_remote_state ();
4671 #ifdef DEPRECATED_REMOTE_BREAKPOINT
4676 /* Try the "Z" s/w breakpoint packet if it is not already disabled.
4677 If it succeeds, then set the support to PACKET_ENABLE. If it
4678 fails, and the user has explicitly requested the Z support then
4679 report an error, otherwise, mark it disabled and go on. */
4681 if (remote_protocol_Z
[Z_PACKET_SOFTWARE_BP
].support
!= PACKET_DISABLE
)
4683 char *buf
= alloca (rs
->remote_packet_size
);
4686 addr
= remote_address_masked (addr
);
4690 p
+= hexnumstr (p
, (ULONGEST
) addr
);
4691 BREAKPOINT_FROM_PC (&addr
, &bp_size
);
4692 sprintf (p
, ",%d", bp_size
);
4695 getpkt (buf
, (rs
->remote_packet_size
), 0);
4697 switch (packet_ok (buf
, &remote_protocol_Z
[Z_PACKET_SOFTWARE_BP
]))
4703 case PACKET_UNKNOWN
:
4708 #ifdef DEPRECATED_REMOTE_BREAKPOINT
4709 val
= target_read_memory (addr
, contents_cache
, sizeof big_break_insn
);
4713 if (TARGET_BYTE_ORDER
== BFD_ENDIAN_BIG
)
4714 val
= target_write_memory (addr
, (char *) big_break_insn
,
4715 sizeof big_break_insn
);
4717 val
= target_write_memory (addr
, (char *) little_break_insn
,
4718 sizeof little_break_insn
);
4723 return memory_insert_breakpoint (addr
, contents_cache
);
4724 #endif /* DEPRECATED_REMOTE_BREAKPOINT */
4728 remote_remove_breakpoint (CORE_ADDR addr
, char *contents_cache
)
4730 struct remote_state
*rs
= get_remote_state ();
4733 if (remote_protocol_Z
[Z_PACKET_SOFTWARE_BP
].support
!= PACKET_DISABLE
)
4735 char *buf
= alloca (rs
->remote_packet_size
);
4742 addr
= remote_address_masked (addr
);
4743 p
+= hexnumstr (p
, (ULONGEST
) addr
);
4744 BREAKPOINT_FROM_PC (&addr
, &bp_size
);
4745 sprintf (p
, ",%d", bp_size
);
4748 getpkt (buf
, (rs
->remote_packet_size
), 0);
4750 return (buf
[0] == 'E');
4753 #ifdef DEPRECATED_REMOTE_BREAKPOINT
4754 return target_write_memory (addr
, contents_cache
, sizeof big_break_insn
);
4756 return memory_remove_breakpoint (addr
, contents_cache
);
4757 #endif /* DEPRECATED_REMOTE_BREAKPOINT */
4761 watchpoint_to_Z_packet (int type
)
4775 internal_error (__FILE__
, __LINE__
,
4776 "hw_bp_to_z: bad watchpoint type %d", type
);
4781 remote_insert_watchpoint (CORE_ADDR addr
, int len
, int type
)
4783 struct remote_state
*rs
= get_remote_state ();
4784 char *buf
= alloca (rs
->remote_packet_size
);
4786 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
4788 if (remote_protocol_Z
[packet
].support
== PACKET_DISABLE
)
4789 error ("Can't set hardware watchpoints without the '%s' (%s) packet\n",
4790 remote_protocol_Z
[packet
].name
,
4791 remote_protocol_Z
[packet
].title
);
4793 sprintf (buf
, "Z%x,", packet
);
4794 p
= strchr (buf
, '\0');
4795 addr
= remote_address_masked (addr
);
4796 p
+= hexnumstr (p
, (ULONGEST
) addr
);
4797 sprintf (p
, ",%x", len
);
4800 getpkt (buf
, (rs
->remote_packet_size
), 0);
4802 switch (packet_ok (buf
, &remote_protocol_Z
[packet
]))
4805 case PACKET_UNKNOWN
:
4810 internal_error (__FILE__
, __LINE__
,
4811 "remote_insert_watchpoint: reached end of function");
4816 remote_remove_watchpoint (CORE_ADDR addr
, int len
, int type
)
4818 struct remote_state
*rs
= get_remote_state ();
4819 char *buf
= alloca (rs
->remote_packet_size
);
4821 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
4823 if (remote_protocol_Z
[packet
].support
== PACKET_DISABLE
)
4824 error ("Can't clear hardware watchpoints without the '%s' (%s) packet\n",
4825 remote_protocol_Z
[packet
].name
,
4826 remote_protocol_Z
[packet
].title
);
4828 sprintf (buf
, "z%x,", packet
);
4829 p
= strchr (buf
, '\0');
4830 addr
= remote_address_masked (addr
);
4831 p
+= hexnumstr (p
, (ULONGEST
) addr
);
4832 sprintf (p
, ",%x", len
);
4834 getpkt (buf
, (rs
->remote_packet_size
), 0);
4836 switch (packet_ok (buf
, &remote_protocol_Z
[packet
]))
4839 case PACKET_UNKNOWN
:
4844 internal_error (__FILE__
, __LINE__
,
4845 "remote_remove_watchpoint: reached end of function");
4849 int remote_hw_watchpoint_limit
= -1;
4850 int remote_hw_breakpoint_limit
= -1;
4853 remote_check_watch_resources (int type
, int cnt
, int ot
)
4855 if (type
== bp_hardware_breakpoint
)
4857 if (remote_hw_breakpoint_limit
== 0)
4859 else if (remote_hw_breakpoint_limit
< 0)
4861 else if (cnt
<= remote_hw_breakpoint_limit
)
4866 if (remote_hw_watchpoint_limit
== 0)
4868 else if (remote_hw_watchpoint_limit
< 0)
4872 else if (cnt
<= remote_hw_watchpoint_limit
)
4879 remote_stopped_by_watchpoint (void)
4881 return remote_stopped_by_watchpoint_p
;
4885 remote_stopped_data_address (void)
4887 if (remote_stopped_by_watchpoint ())
4888 return remote_watch_data_address
;
4889 return (CORE_ADDR
)0;
4894 remote_insert_hw_breakpoint (CORE_ADDR addr
, char *shadow
)
4897 struct remote_state
*rs
= get_remote_state ();
4898 char *buf
= alloca (rs
->remote_packet_size
);
4901 /* The length field should be set to the size of a breakpoint
4904 BREAKPOINT_FROM_PC (&addr
, &len
);
4906 if (remote_protocol_Z
[Z_PACKET_HARDWARE_BP
].support
== PACKET_DISABLE
)
4907 error ("Can't set hardware breakpoint without the '%s' (%s) packet\n",
4908 remote_protocol_Z
[Z_PACKET_HARDWARE_BP
].name
,
4909 remote_protocol_Z
[Z_PACKET_HARDWARE_BP
].title
);
4915 addr
= remote_address_masked (addr
);
4916 p
+= hexnumstr (p
, (ULONGEST
) addr
);
4917 sprintf (p
, ",%x", len
);
4920 getpkt (buf
, (rs
->remote_packet_size
), 0);
4922 switch (packet_ok (buf
, &remote_protocol_Z
[Z_PACKET_HARDWARE_BP
]))
4925 case PACKET_UNKNOWN
:
4930 internal_error (__FILE__
, __LINE__
,
4931 "remote_insert_hw_breakpoint: reached end of function");
4936 remote_remove_hw_breakpoint (CORE_ADDR addr
, char *shadow
)
4939 struct remote_state
*rs
= get_remote_state ();
4940 char *buf
= alloca (rs
->remote_packet_size
);
4943 /* The length field should be set to the size of a breakpoint
4946 BREAKPOINT_FROM_PC (&addr
, &len
);
4948 if (remote_protocol_Z
[Z_PACKET_HARDWARE_BP
].support
== PACKET_DISABLE
)
4949 error ("Can't clear hardware breakpoint without the '%s' (%s) packet\n",
4950 remote_protocol_Z
[Z_PACKET_HARDWARE_BP
].name
,
4951 remote_protocol_Z
[Z_PACKET_HARDWARE_BP
].title
);
4957 addr
= remote_address_masked (addr
);
4958 p
+= hexnumstr (p
, (ULONGEST
) addr
);
4959 sprintf (p
, ",%x", len
);
4962 getpkt (buf
, (rs
->remote_packet_size
), 0);
4964 switch (packet_ok (buf
, &remote_protocol_Z
[Z_PACKET_HARDWARE_BP
]))
4967 case PACKET_UNKNOWN
:
4972 internal_error (__FILE__
, __LINE__
,
4973 "remote_remove_hw_breakpoint: reached end of function");
4976 /* Some targets are only capable of doing downloads, and afterwards
4977 they switch to the remote serial protocol. This function provides
4978 a clean way to get from the download target to the remote target.
4979 It's basically just a wrapper so that we don't have to expose any
4980 of the internal workings of remote.c.
4982 Prior to calling this routine, you should shutdown the current
4983 target code, else you will get the "A program is being debugged
4984 already..." message. Usually a call to pop_target() suffices. */
4987 push_remote_target (char *name
, int from_tty
)
4989 printf_filtered ("Switching to remote protocol\n");
4990 remote_open (name
, from_tty
);
4993 /* Table used by the crc32 function to calcuate the checksum. */
4995 static unsigned long crc32_table
[256] =
4998 static unsigned long
4999 crc32 (unsigned char *buf
, int len
, unsigned int crc
)
5001 if (!crc32_table
[1])
5003 /* Initialize the CRC table and the decoding table. */
5007 for (i
= 0; i
< 256; i
++)
5009 for (c
= i
<< 24, j
= 8; j
> 0; --j
)
5010 c
= c
& 0x80000000 ? (c
<< 1) ^ 0x04c11db7 : (c
<< 1);
5017 crc
= (crc
<< 8) ^ crc32_table
[((crc
>> 24) ^ *buf
) & 255];
5023 /* compare-sections command
5025 With no arguments, compares each loadable section in the exec bfd
5026 with the same memory range on the target, and reports mismatches.
5027 Useful for verifying the image on the target against the exec file.
5028 Depends on the target understanding the new "qCRC:" request. */
5030 /* FIXME: cagney/1999-10-26: This command should be broken down into a
5031 target method (target verify memory) and generic version of the
5032 actual command. This will allow other high-level code (especially
5033 generic_load()) to make use of this target functionality. */
5036 compare_sections_command (char *args
, int from_tty
)
5038 struct remote_state
*rs
= get_remote_state ();
5040 unsigned long host_crc
, target_crc
;
5041 extern bfd
*exec_bfd
;
5042 struct cleanup
*old_chain
;
5045 const char *sectname
;
5046 char *buf
= alloca (rs
->remote_packet_size
);
5053 error ("command cannot be used without an exec file");
5054 if (!current_target
.to_shortname
||
5055 strcmp (current_target
.to_shortname
, "remote") != 0)
5056 error ("command can only be used with remote target");
5058 for (s
= exec_bfd
->sections
; s
; s
= s
->next
)
5060 if (!(s
->flags
& SEC_LOAD
))
5061 continue; /* skip non-loadable section */
5063 size
= bfd_get_section_size_before_reloc (s
);
5065 continue; /* skip zero-length section */
5067 sectname
= bfd_get_section_name (exec_bfd
, s
);
5068 if (args
&& strcmp (args
, sectname
) != 0)
5069 continue; /* not the section selected by user */
5071 matched
= 1; /* do this section */
5073 /* FIXME: assumes lma can fit into long */
5074 sprintf (buf
, "qCRC:%lx,%lx", (long) lma
, (long) size
);
5077 /* be clever; compute the host_crc before waiting for target reply */
5078 sectdata
= xmalloc (size
);
5079 old_chain
= make_cleanup (xfree
, sectdata
);
5080 bfd_get_section_contents (exec_bfd
, s
, sectdata
, 0, size
);
5081 host_crc
= crc32 ((unsigned char *) sectdata
, size
, 0xffffffff);
5083 getpkt (buf
, (rs
->remote_packet_size
), 0);
5085 error ("target memory fault, section %s, range 0x%s -- 0x%s",
5086 sectname
, paddr (lma
), paddr (lma
+ size
));
5088 error ("remote target does not support this operation");
5090 for (target_crc
= 0, tmp
= &buf
[1]; *tmp
; tmp
++)
5091 target_crc
= target_crc
* 16 + fromhex (*tmp
);
5093 printf_filtered ("Section %s, range 0x%s -- 0x%s: ",
5094 sectname
, paddr (lma
), paddr (lma
+ size
));
5095 if (host_crc
== target_crc
)
5096 printf_filtered ("matched.\n");
5099 printf_filtered ("MIS-MATCHED!\n");
5103 do_cleanups (old_chain
);
5106 warning ("One or more sections of the remote executable does not match\n\
5107 the loaded file\n");
5108 if (args
&& !matched
)
5109 printf_filtered ("No loaded section named '%s'.\n", args
);
5113 remote_xfer_partial (struct target_ops
*ops
, enum target_object object
,
5114 const char *annex
, void *readbuf
, const void *writebuf
,
5115 ULONGEST offset
, LONGEST len
)
5117 struct remote_state
*rs
= get_remote_state ();
5119 char *buf2
= alloca (rs
->remote_packet_size
);
5120 char *p2
= &buf2
[0];
5123 /* Only handle reads. */
5124 if (writebuf
!= NULL
|| readbuf
== NULL
)
5127 /* Map pre-existing objects onto letters. DO NOT do this for new
5128 objects!!! Instead specify new query packets. */
5131 case TARGET_OBJECT_KOD
:
5134 case TARGET_OBJECT_AVR
:
5141 /* Note: a zero OFFSET and LEN can be used to query the minimum
5143 if (offset
== 0 && len
== 0)
5144 return (rs
->remote_packet_size
);
5145 /* Minimum outbuf size is (rs->remote_packet_size) - if bufsiz is
5146 not large enough let the caller. */
5147 if (len
< (rs
->remote_packet_size
))
5149 len
= rs
->remote_packet_size
;
5151 /* except for querying the minimum buffer size, target must be open */
5153 error ("remote query is only available after target open");
5155 gdb_assert (annex
!= NULL
);
5156 gdb_assert (readbuf
!= NULL
);
5161 /* we used one buffer char for the remote protocol q command and another
5162 for the query type. As the remote protocol encapsulation uses 4 chars
5163 plus one extra in case we are debugging (remote_debug),
5164 we have PBUFZIZ - 7 left to pack the query string */
5166 while (annex
[i
] && (i
< ((rs
->remote_packet_size
) - 8)))
5168 /* Bad caller may have sent forbidden characters. */
5169 gdb_assert (isprint (annex
[i
]) && annex
[i
] != '$' && annex
[i
] != '#');
5174 gdb_assert (annex
[i
] == '\0');
5180 getpkt (readbuf
, len
, 0);
5182 return strlen (readbuf
);
5186 remote_rcmd (char *command
,
5187 struct ui_file
*outbuf
)
5189 struct remote_state
*rs
= get_remote_state ();
5191 char *buf
= alloca (rs
->remote_packet_size
);
5195 error ("remote rcmd is only available after target open");
5197 /* Send a NULL command across as an empty command */
5198 if (command
== NULL
)
5201 /* The query prefix */
5202 strcpy (buf
, "qRcmd,");
5203 p
= strchr (buf
, '\0');
5205 if ((strlen (buf
) + strlen (command
) * 2 + 8/*misc*/) > (rs
->remote_packet_size
))
5206 error ("\"monitor\" command ``%s'' is too long\n", command
);
5208 /* Encode the actual command */
5209 bin2hex (command
, p
, 0);
5211 if (putpkt (buf
) < 0)
5212 error ("Communication problem with target\n");
5214 /* get/display the response */
5217 /* XXX - see also tracepoint.c:remote_get_noisy_reply() */
5219 getpkt (buf
, (rs
->remote_packet_size
), 0);
5221 error ("Target does not support this command\n");
5222 if (buf
[0] == 'O' && buf
[1] != 'K')
5224 remote_console_output (buf
+ 1); /* 'O' message from stub */
5227 if (strcmp (buf
, "OK") == 0)
5229 if (strlen (buf
) == 3 && buf
[0] == 'E'
5230 && isdigit (buf
[1]) && isdigit (buf
[2]))
5232 error ("Protocol error with Rcmd");
5234 for (p
= buf
; p
[0] != '\0' && p
[1] != '\0'; p
+= 2)
5236 char c
= (fromhex (p
[0]) << 4) + fromhex (p
[1]);
5237 fputc_unfiltered (c
, outbuf
);
5244 packet_command (char *args
, int from_tty
)
5246 struct remote_state
*rs
= get_remote_state ();
5247 char *buf
= alloca (rs
->remote_packet_size
);
5250 error ("command can only be used with remote target");
5253 error ("remote-packet command requires packet text as argument");
5255 puts_filtered ("sending: ");
5256 print_packet (args
);
5257 puts_filtered ("\n");
5260 getpkt (buf
, (rs
->remote_packet_size
), 0);
5261 puts_filtered ("received: ");
5263 puts_filtered ("\n");
5267 /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------------- */
5269 static void display_thread_info (struct gdb_ext_thread_info
*info
);
5271 static void threadset_test_cmd (char *cmd
, int tty
);
5273 static void threadalive_test (char *cmd
, int tty
);
5275 static void threadlist_test_cmd (char *cmd
, int tty
);
5277 int get_and_display_threadinfo (threadref
* ref
);
5279 static void threadinfo_test_cmd (char *cmd
, int tty
);
5281 static int thread_display_step (threadref
* ref
, void *context
);
5283 static void threadlist_update_test_cmd (char *cmd
, int tty
);
5285 static void init_remote_threadtests (void);
5287 #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid */
5290 threadset_test_cmd (char *cmd
, int tty
)
5292 int sample_thread
= SAMPLE_THREAD
;
5294 printf_filtered ("Remote threadset test\n");
5295 set_thread (sample_thread
, 1);
5300 threadalive_test (char *cmd
, int tty
)
5302 int sample_thread
= SAMPLE_THREAD
;
5304 if (remote_thread_alive (pid_to_ptid (sample_thread
)))
5305 printf_filtered ("PASS: Thread alive test\n");
5307 printf_filtered ("FAIL: Thread alive test\n");
5310 void output_threadid (char *title
, threadref
* ref
);
5313 output_threadid (char *title
, threadref
*ref
)
5317 pack_threadid (&hexid
[0], ref
); /* Convert threead id into hex */
5319 printf_filtered ("%s %s\n", title
, (&hexid
[0]));
5323 threadlist_test_cmd (char *cmd
, int tty
)
5326 threadref nextthread
;
5327 int done
, result_count
;
5328 threadref threadlist
[3];
5330 printf_filtered ("Remote Threadlist test\n");
5331 if (!remote_get_threadlist (startflag
, &nextthread
, 3, &done
,
5332 &result_count
, &threadlist
[0]))
5333 printf_filtered ("FAIL: threadlist test\n");
5336 threadref
*scan
= threadlist
;
5337 threadref
*limit
= scan
+ result_count
;
5339 while (scan
< limit
)
5340 output_threadid (" thread ", scan
++);
5345 display_thread_info (struct gdb_ext_thread_info
*info
)
5347 output_threadid ("Threadid: ", &info
->threadid
);
5348 printf_filtered ("Name: %s\n ", info
->shortname
);
5349 printf_filtered ("State: %s\n", info
->display
);
5350 printf_filtered ("other: %s\n\n", info
->more_display
);
5354 get_and_display_threadinfo (threadref
*ref
)
5358 struct gdb_ext_thread_info threadinfo
;
5360 set
= TAG_THREADID
| TAG_EXISTS
| TAG_THREADNAME
5361 | TAG_MOREDISPLAY
| TAG_DISPLAY
;
5362 if (0 != (result
= remote_get_threadinfo (ref
, set
, &threadinfo
)))
5363 display_thread_info (&threadinfo
);
5368 threadinfo_test_cmd (char *cmd
, int tty
)
5370 int athread
= SAMPLE_THREAD
;
5374 int_to_threadref (&thread
, athread
);
5375 printf_filtered ("Remote Threadinfo test\n");
5376 if (!get_and_display_threadinfo (&thread
))
5377 printf_filtered ("FAIL cannot get thread info\n");
5381 thread_display_step (threadref
*ref
, void *context
)
5383 /* output_threadid(" threadstep ",ref); *//* simple test */
5384 return get_and_display_threadinfo (ref
);
5388 threadlist_update_test_cmd (char *cmd
, int tty
)
5390 printf_filtered ("Remote Threadlist update test\n");
5391 remote_threadlist_iterator (thread_display_step
, 0, CRAZY_MAX_THREADS
);
5395 init_remote_threadtests (void)
5397 add_com ("tlist", class_obscure
, threadlist_test_cmd
,
5398 "Fetch and print the remote list of thread identifiers, one pkt only");
5399 add_com ("tinfo", class_obscure
, threadinfo_test_cmd
,
5400 "Fetch and display info about one thread");
5401 add_com ("tset", class_obscure
, threadset_test_cmd
,
5402 "Test setting to a different thread");
5403 add_com ("tupd", class_obscure
, threadlist_update_test_cmd
,
5404 "Iterate through updating all remote thread info");
5405 add_com ("talive", class_obscure
, threadalive_test
,
5406 " Remote thread alive test ");
5411 /* Convert a thread ID to a string. Returns the string in a static
5415 remote_pid_to_str (ptid_t ptid
)
5417 static char buf
[30];
5419 sprintf (buf
, "Thread %d", PIDGET (ptid
));
5424 init_remote_ops (void)
5426 remote_ops
.to_shortname
= "remote";
5427 remote_ops
.to_longname
= "Remote serial target in gdb-specific protocol";
5429 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
5430 Specify the serial device it is connected to\n\
5431 (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).";
5432 remote_ops
.to_open
= remote_open
;
5433 remote_ops
.to_close
= remote_close
;
5434 remote_ops
.to_detach
= remote_detach
;
5435 remote_ops
.to_disconnect
= remote_disconnect
;
5436 remote_ops
.to_resume
= remote_resume
;
5437 remote_ops
.to_wait
= remote_wait
;
5438 remote_ops
.to_fetch_registers
= remote_fetch_registers
;
5439 remote_ops
.to_store_registers
= remote_store_registers
;
5440 remote_ops
.to_prepare_to_store
= remote_prepare_to_store
;
5441 remote_ops
.to_xfer_memory
= remote_xfer_memory
;
5442 remote_ops
.to_files_info
= remote_files_info
;
5443 remote_ops
.to_insert_breakpoint
= remote_insert_breakpoint
;
5444 remote_ops
.to_remove_breakpoint
= remote_remove_breakpoint
;
5445 remote_ops
.to_stopped_by_watchpoint
= remote_stopped_by_watchpoint
;
5446 remote_ops
.to_stopped_data_address
= remote_stopped_data_address
;
5447 remote_ops
.to_can_use_hw_breakpoint
= remote_check_watch_resources
;
5448 remote_ops
.to_insert_hw_breakpoint
= remote_insert_hw_breakpoint
;
5449 remote_ops
.to_remove_hw_breakpoint
= remote_remove_hw_breakpoint
;
5450 remote_ops
.to_insert_watchpoint
= remote_insert_watchpoint
;
5451 remote_ops
.to_remove_watchpoint
= remote_remove_watchpoint
;
5452 remote_ops
.to_kill
= remote_kill
;
5453 remote_ops
.to_load
= generic_load
;
5454 remote_ops
.to_mourn_inferior
= remote_mourn
;
5455 remote_ops
.to_thread_alive
= remote_thread_alive
;
5456 remote_ops
.to_find_new_threads
= remote_threads_info
;
5457 remote_ops
.to_pid_to_str
= remote_pid_to_str
;
5458 remote_ops
.to_extra_thread_info
= remote_threads_extra_info
;
5459 remote_ops
.to_stop
= remote_stop
;
5460 remote_ops
.to_xfer_partial
= remote_xfer_partial
;
5461 remote_ops
.to_rcmd
= remote_rcmd
;
5462 remote_ops
.to_stratum
= process_stratum
;
5463 remote_ops
.to_has_all_memory
= 1;
5464 remote_ops
.to_has_memory
= 1;
5465 remote_ops
.to_has_stack
= 1;
5466 remote_ops
.to_has_registers
= 1;
5467 remote_ops
.to_has_execution
= 1;
5468 remote_ops
.to_has_thread_control
= tc_schedlock
; /* can lock scheduler */
5469 remote_ops
.to_magic
= OPS_MAGIC
;
5472 /* Set up the extended remote vector by making a copy of the standard
5473 remote vector and adding to it. */
5476 init_extended_remote_ops (void)
5478 extended_remote_ops
= remote_ops
;
5480 extended_remote_ops
.to_shortname
= "extended-remote";
5481 extended_remote_ops
.to_longname
=
5482 "Extended remote serial target in gdb-specific protocol";
5483 extended_remote_ops
.to_doc
=
5484 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
5485 Specify the serial device it is connected to (e.g. /dev/ttya).",
5486 extended_remote_ops
.to_open
= extended_remote_open
;
5487 extended_remote_ops
.to_create_inferior
= extended_remote_create_inferior
;
5488 extended_remote_ops
.to_mourn_inferior
= extended_remote_mourn
;
5492 * Command: info remote-process
5494 * This implements Cisco's version of the "info proc" command.
5496 * This query allows the target stub to return an arbitrary string
5497 * (or strings) giving arbitrary information about the target process.
5498 * This is optional; the target stub isn't required to implement it.
5500 * Syntax: qfProcessInfo request first string
5501 * qsProcessInfo request subsequent string
5502 * reply: 'O'<hex-encoded-string>
5503 * 'l' last reply (empty)
5507 remote_info_process (char *args
, int from_tty
)
5509 struct remote_state
*rs
= get_remote_state ();
5510 char *buf
= alloca (rs
->remote_packet_size
);
5512 if (remote_desc
== 0)
5513 error ("Command can only be used when connected to the remote target.");
5515 putpkt ("qfProcessInfo");
5516 getpkt (buf
, (rs
->remote_packet_size
), 0);
5518 return; /* Silently: target does not support this feature. */
5521 error ("info proc: target error.");
5523 while (buf
[0] == 'O') /* Capitol-O packet */
5525 remote_console_output (&buf
[1]);
5526 putpkt ("qsProcessInfo");
5527 getpkt (buf
, (rs
->remote_packet_size
), 0);
5536 remote_cisco_open (char *name
, int from_tty
)
5540 error ("To open a remote debug connection, you need to specify what \n"
5541 "device is attached to the remote system (e.g. host:port).");
5543 /* See FIXME above */
5544 wait_forever_enabled_p
= 1;
5546 target_preopen (from_tty
);
5548 unpush_target (&remote_cisco_ops
);
5550 remote_desc
= remote_serial_open (name
);
5552 perror_with_name (name
);
5555 * If a baud rate was specified on the gdb command line it will
5556 * be greater than the initial value of -1. If it is, use it otherwise
5560 baud_rate
= (baud_rate
> 0) ? baud_rate
: 9600;
5561 if (serial_setbaudrate (remote_desc
, baud_rate
))
5563 /* The requested speed could not be set. Error out to
5564 top level after closing remote_desc. Take care to
5565 set remote_desc to NULL to avoid closing remote_desc
5567 serial_close (remote_desc
);
5569 perror_with_name (name
);
5572 serial_raw (remote_desc
);
5574 /* If there is something sitting in the buffer we might take it as a
5575 response to a command, which would be bad. */
5576 serial_flush_input (remote_desc
);
5580 puts_filtered ("Remote debugging using ");
5581 puts_filtered (name
);
5582 puts_filtered ("\n");
5585 remote_cisco_mode
= 1;
5587 push_target (&remote_cisco_ops
); /* Switch to using cisco target now */
5589 init_all_packet_configs ();
5591 general_thread
= -2;
5592 continue_thread
= -2;
5594 /* Probe for ability to use "ThreadInfo" query, as required. */
5595 use_threadinfo_query
= 1;
5596 use_threadextra_query
= 1;
5598 /* Without this, some commands which require an active target (such
5599 as kill) won't work. This variable serves (at least) double duty
5600 as both the pid of the target process (if it has such), and as a
5601 flag indicating that a target is active. These functions should
5602 be split out into seperate variables, especially since GDB will
5603 someday have a notion of debugging several processes. */
5604 inferior_ptid
= pid_to_ptid (MAGIC_NULL_PID
);
5606 /* Start the remote connection; if error, discard this target. See
5607 the comments in remote_open_1() for further details such as the
5608 need to re-throw the exception. */
5609 ex
= catch_exceptions (uiout
,
5610 remote_start_remote_dummy
, NULL
,
5611 "Couldn't establish connection to remote"
5617 throw_exception (ex
);
5622 remote_cisco_close (int quitting
)
5624 remote_cisco_mode
= 0;
5625 remote_close (quitting
);
5629 remote_cisco_mourn (void)
5631 remote_mourn_1 (&remote_cisco_ops
);
5643 /* Shared between readsocket() and readtty(). The size is arbitrary,
5644 however all targets are known to support a 400 character packet. */
5645 static char tty_input
[400];
5647 static int escape_count
;
5648 static int echo_check
;
5649 extern int quit_flag
;
5656 /* Loop until the socket doesn't have any more data */
5658 while ((data
= readchar (0)) >= 0)
5660 /* Check for the escape sequence */
5663 /* If this is the fourth escape, get out */
5664 if (++escape_count
== 4)
5669 { /* This is a '|', but not the fourth in a row.
5670 Continue without echoing it. If it isn't actually
5671 one of four in a row, it'll be echoed later. */
5678 /* Ensure any pending '|'s are flushed. */
5680 for (; escape_count
> 0; escape_count
--)
5684 if (data
== '\r') /* If this is a return character, */
5685 continue; /* - just supress it. */
5687 if (echo_check
!= -1) /* Check for echo of user input. */
5689 if (tty_input
[echo_check
] == data
)
5691 gdb_assert (echo_check
<= sizeof (tty_input
));
5692 echo_check
++; /* Character matched user input: */
5693 continue; /* Continue without echoing it. */
5695 else if ((data
== '\n') && (tty_input
[echo_check
] == '\r'))
5696 { /* End of the line (and of echo checking). */
5697 echo_check
= -1; /* No more echo supression */
5698 continue; /* Continue without echoing. */
5701 { /* Failed check for echo of user input.
5702 We now have some suppressed output to flush! */
5705 for (j
= 0; j
< echo_check
; j
++)
5706 putchar (tty_input
[j
]);
5710 putchar (data
); /* Default case: output the char. */
5713 if (data
== SERIAL_TIMEOUT
) /* Timeout returned from readchar. */
5714 return READ_MORE
; /* Try to read some more */
5716 return FATAL_ERROR
; /* Trouble, bail out */
5724 /* First, read a buffer full from the terminal */
5725 tty_bytecount
= read (fileno (stdin
), tty_input
, sizeof (tty_input
) - 1);
5726 if (tty_bytecount
== -1)
5728 perror ("readtty: read failed");
5732 /* Remove a quoted newline. */
5733 if (tty_input
[tty_bytecount
- 1] == '\n' &&
5734 tty_input
[tty_bytecount
- 2] == '\\') /* line ending in backslash */
5736 tty_input
[--tty_bytecount
] = 0; /* remove newline */
5737 tty_input
[--tty_bytecount
] = 0; /* remove backslash */
5740 /* Turn trailing newlines into returns */
5741 if (tty_input
[tty_bytecount
- 1] == '\n')
5742 tty_input
[tty_bytecount
- 1] = '\r';
5744 /* If the line consists of a ~, enter debugging mode. */
5745 if ((tty_input
[0] == '~') && (tty_bytecount
== 2))
5748 /* Make this a zero terminated string and write it out */
5749 tty_input
[tty_bytecount
] = 0;
5750 if (serial_write (remote_desc
, tty_input
, tty_bytecount
))
5752 perror_with_name ("readtty: write failed");
5762 fd_set input
; /* file descriptors for select */
5763 int tablesize
; /* max number of FDs for select */
5770 tablesize
= 8 * sizeof (input
);
5774 /* Check for anything from our socket - doesn't block. Note that
5775 this must be done *before* the select as there may be
5776 buffered I/O waiting to be processed. */
5778 if ((status
= readsocket ()) == FATAL_ERROR
)
5780 error ("Debugging terminated by communications error");
5782 else if (status
!= READ_MORE
)
5787 fflush (stdout
); /* Flush output before blocking */
5789 /* Now block on more socket input or TTY input */
5792 FD_SET (fileno (stdin
), &input
);
5793 FD_SET (deprecated_serial_fd (remote_desc
), &input
);
5795 status
= select (tablesize
, &input
, 0, 0, 0);
5796 if ((status
== -1) && (errno
!= EINTR
))
5798 error ("Communications error on select %d", errno
);
5801 /* Handle Control-C typed */
5805 if ((++quit_count
) == 2)
5807 if (query ("Interrupt GDB? "))
5809 printf_filtered ("Interrupted by user.\n");
5810 throw_exception (RETURN_QUIT
);
5817 serial_send_break (remote_desc
);
5819 serial_write (remote_desc
, "\003", 1);
5824 /* Handle console input */
5826 if (FD_ISSET (fileno (stdin
), &input
))
5830 status
= readtty ();
5831 if (status
== READ_MORE
)
5834 return status
; /* telnet session ended */
5840 remote_cisco_wait (ptid_t ptid
, struct target_waitstatus
*status
)
5842 if (minitelnet () != ENTER_DEBUG
)
5844 error ("Debugging session terminated by protocol error");
5847 return remote_wait (ptid
, status
);
5851 init_remote_cisco_ops (void)
5853 remote_cisco_ops
.to_shortname
= "cisco";
5854 remote_cisco_ops
.to_longname
= "Remote serial target in cisco-specific protocol";
5855 remote_cisco_ops
.to_doc
=
5856 "Use a remote machine via TCP, using a cisco-specific protocol.\n\
5857 Specify the serial device it is connected to (e.g. host:2020).";
5858 remote_cisco_ops
.to_open
= remote_cisco_open
;
5859 remote_cisco_ops
.to_close
= remote_cisco_close
;
5860 remote_cisco_ops
.to_detach
= remote_detach
;
5861 remote_cisco_ops
.to_disconnect
= remote_disconnect
;
5862 remote_cisco_ops
.to_resume
= remote_resume
;
5863 remote_cisco_ops
.to_wait
= remote_cisco_wait
;
5864 remote_cisco_ops
.to_fetch_registers
= remote_fetch_registers
;
5865 remote_cisco_ops
.to_store_registers
= remote_store_registers
;
5866 remote_cisco_ops
.to_prepare_to_store
= remote_prepare_to_store
;
5867 remote_cisco_ops
.to_xfer_memory
= remote_xfer_memory
;
5868 remote_cisco_ops
.to_files_info
= remote_files_info
;
5869 remote_cisco_ops
.to_insert_breakpoint
= remote_insert_breakpoint
;
5870 remote_cisco_ops
.to_remove_breakpoint
= remote_remove_breakpoint
;
5871 remote_cisco_ops
.to_remove_hw_breakpoint
= remote_remove_hw_breakpoint
;
5872 remote_cisco_ops
.to_insert_hw_breakpoint
= remote_insert_hw_breakpoint
;
5873 remote_cisco_ops
.to_insert_watchpoint
= remote_insert_watchpoint
;
5874 remote_cisco_ops
.to_remove_watchpoint
= remote_remove_watchpoint
;
5875 remote_cisco_ops
.to_stopped_by_watchpoint
= remote_stopped_by_watchpoint
;
5876 remote_cisco_ops
.to_stopped_data_address
= remote_stopped_data_address
;
5877 remote_cisco_ops
.to_can_use_hw_breakpoint
= remote_check_watch_resources
;
5878 remote_cisco_ops
.to_kill
= remote_kill
;
5879 remote_cisco_ops
.to_load
= generic_load
;
5880 remote_cisco_ops
.to_mourn_inferior
= remote_cisco_mourn
;
5881 remote_cisco_ops
.to_thread_alive
= remote_thread_alive
;
5882 remote_cisco_ops
.to_find_new_threads
= remote_threads_info
;
5883 remote_cisco_ops
.to_pid_to_str
= remote_pid_to_str
;
5884 remote_cisco_ops
.to_extra_thread_info
= remote_threads_extra_info
;
5885 remote_cisco_ops
.to_stratum
= process_stratum
;
5886 remote_cisco_ops
.to_has_all_memory
= 1;
5887 remote_cisco_ops
.to_has_memory
= 1;
5888 remote_cisco_ops
.to_has_stack
= 1;
5889 remote_cisco_ops
.to_has_registers
= 1;
5890 remote_cisco_ops
.to_has_execution
= 1;
5891 remote_cisco_ops
.to_magic
= OPS_MAGIC
;
5895 remote_can_async_p (void)
5897 /* We're async whenever the serial device is. */
5898 return (current_target
.to_async_mask_value
) && serial_can_async_p (remote_desc
);
5902 remote_is_async_p (void)
5904 /* We're async whenever the serial device is. */
5905 return (current_target
.to_async_mask_value
) && serial_is_async_p (remote_desc
);
5908 /* Pass the SERIAL event on and up to the client. One day this code
5909 will be able to delay notifying the client of an event until the
5910 point where an entire packet has been received. */
5912 static void (*async_client_callback
) (enum inferior_event_type event_type
, void *context
);
5913 static void *async_client_context
;
5914 static serial_event_ftype remote_async_serial_handler
;
5917 remote_async_serial_handler (struct serial
*scb
, void *context
)
5919 /* Don't propogate error information up to the client. Instead let
5920 the client find out about the error by querying the target. */
5921 async_client_callback (INF_REG_EVENT
, async_client_context
);
5925 remote_async (void (*callback
) (enum inferior_event_type event_type
, void *context
), void *context
)
5927 if (current_target
.to_async_mask_value
== 0)
5928 internal_error (__FILE__
, __LINE__
,
5929 "Calling remote_async when async is masked");
5931 if (callback
!= NULL
)
5933 serial_async (remote_desc
, remote_async_serial_handler
, NULL
);
5934 async_client_callback
= callback
;
5935 async_client_context
= context
;
5938 serial_async (remote_desc
, NULL
, NULL
);
5941 /* Target async and target extended-async.
5943 This are temporary targets, until it is all tested. Eventually
5944 async support will be incorporated int the usual 'remote'
5948 init_remote_async_ops (void)
5950 remote_async_ops
.to_shortname
= "async";
5951 remote_async_ops
.to_longname
= "Remote serial target in async version of the gdb-specific protocol";
5952 remote_async_ops
.to_doc
=
5953 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
5954 Specify the serial device it is connected to (e.g. /dev/ttya).";
5955 remote_async_ops
.to_open
= remote_async_open
;
5956 remote_async_ops
.to_close
= remote_close
;
5957 remote_async_ops
.to_detach
= remote_detach
;
5958 remote_async_ops
.to_disconnect
= remote_disconnect
;
5959 remote_async_ops
.to_resume
= remote_async_resume
;
5960 remote_async_ops
.to_wait
= remote_async_wait
;
5961 remote_async_ops
.to_fetch_registers
= remote_fetch_registers
;
5962 remote_async_ops
.to_store_registers
= remote_store_registers
;
5963 remote_async_ops
.to_prepare_to_store
= remote_prepare_to_store
;
5964 remote_async_ops
.to_xfer_memory
= remote_xfer_memory
;
5965 remote_async_ops
.to_files_info
= remote_files_info
;
5966 remote_async_ops
.to_insert_breakpoint
= remote_insert_breakpoint
;
5967 remote_async_ops
.to_remove_breakpoint
= remote_remove_breakpoint
;
5968 remote_async_ops
.to_can_use_hw_breakpoint
= remote_check_watch_resources
;
5969 remote_async_ops
.to_insert_hw_breakpoint
= remote_insert_hw_breakpoint
;
5970 remote_async_ops
.to_remove_hw_breakpoint
= remote_remove_hw_breakpoint
;
5971 remote_async_ops
.to_insert_watchpoint
= remote_insert_watchpoint
;
5972 remote_async_ops
.to_remove_watchpoint
= remote_remove_watchpoint
;
5973 remote_async_ops
.to_stopped_by_watchpoint
= remote_stopped_by_watchpoint
;
5974 remote_async_ops
.to_stopped_data_address
= remote_stopped_data_address
;
5975 remote_async_ops
.to_terminal_inferior
= remote_async_terminal_inferior
;
5976 remote_async_ops
.to_terminal_ours
= remote_async_terminal_ours
;
5977 remote_async_ops
.to_kill
= remote_async_kill
;
5978 remote_async_ops
.to_load
= generic_load
;
5979 remote_async_ops
.to_mourn_inferior
= remote_async_mourn
;
5980 remote_async_ops
.to_thread_alive
= remote_thread_alive
;
5981 remote_async_ops
.to_find_new_threads
= remote_threads_info
;
5982 remote_async_ops
.to_pid_to_str
= remote_pid_to_str
;
5983 remote_async_ops
.to_extra_thread_info
= remote_threads_extra_info
;
5984 remote_async_ops
.to_stop
= remote_stop
;
5985 remote_async_ops
.to_xfer_partial
= remote_xfer_partial
;
5986 remote_async_ops
.to_rcmd
= remote_rcmd
;
5987 remote_async_ops
.to_stratum
= process_stratum
;
5988 remote_async_ops
.to_has_all_memory
= 1;
5989 remote_async_ops
.to_has_memory
= 1;
5990 remote_async_ops
.to_has_stack
= 1;
5991 remote_async_ops
.to_has_registers
= 1;
5992 remote_async_ops
.to_has_execution
= 1;
5993 remote_async_ops
.to_has_thread_control
= tc_schedlock
; /* can lock scheduler */
5994 remote_async_ops
.to_can_async_p
= remote_can_async_p
;
5995 remote_async_ops
.to_is_async_p
= remote_is_async_p
;
5996 remote_async_ops
.to_async
= remote_async
;
5997 remote_async_ops
.to_async_mask_value
= 1;
5998 remote_async_ops
.to_magic
= OPS_MAGIC
;
6001 /* Set up the async extended remote vector by making a copy of the standard
6002 remote vector and adding to it. */
6005 init_extended_async_remote_ops (void)
6007 extended_async_remote_ops
= remote_async_ops
;
6009 extended_async_remote_ops
.to_shortname
= "extended-async";
6010 extended_async_remote_ops
.to_longname
=
6011 "Extended remote serial target in async gdb-specific protocol";
6012 extended_async_remote_ops
.to_doc
=
6013 "Use a remote computer via a serial line, using an async gdb-specific protocol.\n\
6014 Specify the serial device it is connected to (e.g. /dev/ttya).",
6015 extended_async_remote_ops
.to_open
= extended_remote_async_open
;
6016 extended_async_remote_ops
.to_create_inferior
= extended_remote_async_create_inferior
;
6017 extended_async_remote_ops
.to_mourn_inferior
= extended_remote_mourn
;
6021 set_remote_cmd (char *args
, int from_tty
)
6026 show_remote_cmd (char *args
, int from_tty
)
6028 /* FIXME: cagney/2002-06-15: This function should iterate over
6029 remote_show_cmdlist for a list of sub commands to show. */
6030 show_remote_protocol_Z_packet_cmd (args
, from_tty
, NULL
);
6031 show_remote_protocol_e_packet_cmd (args
, from_tty
, NULL
);
6032 show_remote_protocol_E_packet_cmd (args
, from_tty
, NULL
);
6033 show_remote_protocol_P_packet_cmd (args
, from_tty
, NULL
);
6034 show_remote_protocol_qSymbol_packet_cmd (args
, from_tty
, NULL
);
6035 show_remote_protocol_vcont_packet_cmd (args
, from_tty
, NULL
);
6036 show_remote_protocol_binary_download_cmd (args
, from_tty
, NULL
);
6040 build_remote_gdbarch_data (void)
6042 remote_address_size
= TARGET_ADDR_BIT
;
6045 /* Saved pointer to previous owner of the new_objfile event. */
6046 static void (*remote_new_objfile_chain
) (struct objfile
*);
6048 /* Function to be called whenever a new objfile (shlib) is detected. */
6050 remote_new_objfile (struct objfile
*objfile
)
6052 if (remote_desc
!= 0) /* Have a remote connection */
6054 remote_check_symbols (objfile
);
6056 /* Call predecessor on chain, if any. */
6057 if (remote_new_objfile_chain
!= 0 &&
6059 remote_new_objfile_chain (objfile
);
6063 _initialize_remote (void)
6065 static struct cmd_list_element
*remote_set_cmdlist
;
6066 static struct cmd_list_element
*remote_show_cmdlist
;
6067 struct cmd_list_element
*tmpcmd
;
6069 /* architecture specific data */
6070 remote_gdbarch_data_handle
= register_gdbarch_data (init_remote_state
);
6072 /* Old tacky stuff. NOTE: This comes after the remote protocol so
6073 that the remote protocol has been initialized. */
6074 register_gdbarch_swap (&remote_address_size
,
6075 sizeof (&remote_address_size
), NULL
);
6076 register_gdbarch_swap (NULL
, 0, build_remote_gdbarch_data
);
6079 add_target (&remote_ops
);
6081 init_extended_remote_ops ();
6082 add_target (&extended_remote_ops
);
6084 init_remote_async_ops ();
6085 add_target (&remote_async_ops
);
6087 init_extended_async_remote_ops ();
6088 add_target (&extended_async_remote_ops
);
6090 init_remote_cisco_ops ();
6091 add_target (&remote_cisco_ops
);
6093 /* Hook into new objfile notification. */
6094 remote_new_objfile_chain
= target_new_objfile_hook
;
6095 target_new_objfile_hook
= remote_new_objfile
;
6098 init_remote_threadtests ();
6101 /* set/show remote ... */
6103 add_prefix_cmd ("remote", class_maintenance
, set_remote_cmd
, "\
6104 Remote protocol specific variables\n\
6105 Configure various remote-protocol specific variables such as\n\
6106 the packets being used",
6107 &remote_set_cmdlist
, "set remote ",
6108 0/*allow-unknown*/, &setlist
);
6109 add_prefix_cmd ("remote", class_maintenance
, show_remote_cmd
, "\
6110 Remote protocol specific variables\n\
6111 Configure various remote-protocol specific variables such as\n\
6112 the packets being used",
6113 &remote_show_cmdlist
, "show remote ",
6114 0/*allow-unknown*/, &showlist
);
6116 add_cmd ("compare-sections", class_obscure
, compare_sections_command
,
6117 "Compare section data on target to the exec file.\n\
6118 Argument is a single section name (default: all loaded sections).",
6121 add_cmd ("packet", class_maintenance
, packet_command
,
6122 "Send an arbitrary packet to a remote target.\n\
6123 maintenance packet TEXT\n\
6124 If GDB is talking to an inferior via the GDB serial protocol, then\n\
6125 this command sends the string TEXT to the inferior, and displays the\n\
6126 response packet. GDB supplies the initial `$' character, and the\n\
6127 terminating `#' character and checksum.",
6130 add_setshow_boolean_cmd ("remotebreak", no_class
, &remote_break
,
6131 "Set whether to send break if interrupted.\n",
6132 "Show whether to send break if interrupted.\n",
6134 &setlist
, &showlist
);
6136 /* Install commands for configuring memory read/write packets. */
6138 add_cmd ("remotewritesize", no_class
, set_memory_write_packet_size
,
6139 "Set the maximum number of bytes per memory write packet (deprecated).\n",
6141 add_cmd ("remotewritesize", no_class
, show_memory_write_packet_size
,
6142 "Show the maximum number of bytes per memory write packet (deprecated).\n",
6144 add_cmd ("memory-write-packet-size", no_class
,
6145 set_memory_write_packet_size
,
6146 "Set the maximum number of bytes per memory-write packet.\n"
6147 "Specify the number of bytes in a packet or 0 (zero) for the\n"
6148 "default packet size. The actual limit is further reduced\n"
6149 "dependent on the target. Specify ``fixed'' to disable the\n"
6150 "further restriction and ``limit'' to enable that restriction\n",
6151 &remote_set_cmdlist
);
6152 add_cmd ("memory-read-packet-size", no_class
,
6153 set_memory_read_packet_size
,
6154 "Set the maximum number of bytes per memory-read packet.\n"
6155 "Specify the number of bytes in a packet or 0 (zero) for the\n"
6156 "default packet size. The actual limit is further reduced\n"
6157 "dependent on the target. Specify ``fixed'' to disable the\n"
6158 "further restriction and ``limit'' to enable that restriction\n",
6159 &remote_set_cmdlist
);
6160 add_cmd ("memory-write-packet-size", no_class
,
6161 show_memory_write_packet_size
,
6162 "Show the maximum number of bytes per memory-write packet.\n",
6163 &remote_show_cmdlist
);
6164 add_cmd ("memory-read-packet-size", no_class
,
6165 show_memory_read_packet_size
,
6166 "Show the maximum number of bytes per memory-read packet.\n",
6167 &remote_show_cmdlist
);
6169 add_setshow_cmd ("hardware-watchpoint-limit", no_class
,
6170 var_zinteger
, &remote_hw_watchpoint_limit
, "\
6171 Set the maximum number of target hardware watchpoints.\n\
6172 Specify a negative limit for unlimited.", "\
6173 Show the maximum number of target hardware watchpoints.\n",
6174 NULL
, NULL
, &remote_set_cmdlist
, &remote_show_cmdlist
);
6175 add_setshow_cmd ("hardware-breakpoint-limit", no_class
,
6176 var_zinteger
, &remote_hw_breakpoint_limit
, "\
6177 Set the maximum number of target hardware breakpoints.\n\
6178 Specify a negative limit for unlimited.", "\
6179 Show the maximum number of target hardware breakpoints.\n",
6180 NULL
, NULL
, &remote_set_cmdlist
, &remote_show_cmdlist
);
6183 (add_set_cmd ("remoteaddresssize", class_obscure
,
6184 var_integer
, (char *) &remote_address_size
,
6185 "Set the maximum size of the address (in bits) \
6186 in a memory packet.\n",
6190 add_packet_config_cmd (&remote_protocol_binary_download
,
6191 "X", "binary-download",
6192 set_remote_protocol_binary_download_cmd
,
6193 show_remote_protocol_binary_download_cmd
,
6194 &remote_set_cmdlist
, &remote_show_cmdlist
,
6197 /* XXXX - should ``set remotebinarydownload'' be retained for
6200 (add_set_cmd ("remotebinarydownload", no_class
,
6201 var_boolean
, (char *) &remote_binary_download
,
6202 "Set binary downloads.\n", &setlist
),
6206 add_info ("remote-process", remote_info_process
,
6207 "Query the remote system for process info.");
6209 add_packet_config_cmd (&remote_protocol_vcont
,
6210 "vCont", "verbose-resume",
6211 set_remote_protocol_vcont_packet_cmd
,
6212 show_remote_protocol_vcont_packet_cmd
,
6213 &remote_set_cmdlist
, &remote_show_cmdlist
,
6216 add_packet_config_cmd (&remote_protocol_qSymbol
,
6217 "qSymbol", "symbol-lookup",
6218 set_remote_protocol_qSymbol_packet_cmd
,
6219 show_remote_protocol_qSymbol_packet_cmd
,
6220 &remote_set_cmdlist
, &remote_show_cmdlist
,
6223 add_packet_config_cmd (&remote_protocol_e
,
6224 "e", "step-over-range",
6225 set_remote_protocol_e_packet_cmd
,
6226 show_remote_protocol_e_packet_cmd
,
6227 &remote_set_cmdlist
, &remote_show_cmdlist
,
6229 /* Disable by default. The ``e'' packet has nasty interactions with
6230 the threading code - it relies on global state. */
6231 remote_protocol_e
.detect
= AUTO_BOOLEAN_FALSE
;
6232 update_packet_config (&remote_protocol_e
);
6234 add_packet_config_cmd (&remote_protocol_E
,
6235 "E", "step-over-range-w-signal",
6236 set_remote_protocol_E_packet_cmd
,
6237 show_remote_protocol_E_packet_cmd
,
6238 &remote_set_cmdlist
, &remote_show_cmdlist
,
6240 /* Disable by default. The ``e'' packet has nasty interactions with
6241 the threading code - it relies on global state. */
6242 remote_protocol_E
.detect
= AUTO_BOOLEAN_FALSE
;
6243 update_packet_config (&remote_protocol_E
);
6245 add_packet_config_cmd (&remote_protocol_P
,
6246 "P", "set-register",
6247 set_remote_protocol_P_packet_cmd
,
6248 show_remote_protocol_P_packet_cmd
,
6249 &remote_set_cmdlist
, &remote_show_cmdlist
,
6252 add_packet_config_cmd (&remote_protocol_Z
[Z_PACKET_SOFTWARE_BP
],
6253 "Z0", "software-breakpoint",
6254 set_remote_protocol_Z_software_bp_packet_cmd
,
6255 show_remote_protocol_Z_software_bp_packet_cmd
,
6256 &remote_set_cmdlist
, &remote_show_cmdlist
,
6259 add_packet_config_cmd (&remote_protocol_Z
[Z_PACKET_HARDWARE_BP
],
6260 "Z1", "hardware-breakpoint",
6261 set_remote_protocol_Z_hardware_bp_packet_cmd
,
6262 show_remote_protocol_Z_hardware_bp_packet_cmd
,
6263 &remote_set_cmdlist
, &remote_show_cmdlist
,
6266 add_packet_config_cmd (&remote_protocol_Z
[Z_PACKET_WRITE_WP
],
6267 "Z2", "write-watchpoint",
6268 set_remote_protocol_Z_write_wp_packet_cmd
,
6269 show_remote_protocol_Z_write_wp_packet_cmd
,
6270 &remote_set_cmdlist
, &remote_show_cmdlist
,
6273 add_packet_config_cmd (&remote_protocol_Z
[Z_PACKET_READ_WP
],
6274 "Z3", "read-watchpoint",
6275 set_remote_protocol_Z_read_wp_packet_cmd
,
6276 show_remote_protocol_Z_read_wp_packet_cmd
,
6277 &remote_set_cmdlist
, &remote_show_cmdlist
,
6280 add_packet_config_cmd (&remote_protocol_Z
[Z_PACKET_ACCESS_WP
],
6281 "Z4", "access-watchpoint",
6282 set_remote_protocol_Z_access_wp_packet_cmd
,
6283 show_remote_protocol_Z_access_wp_packet_cmd
,
6284 &remote_set_cmdlist
, &remote_show_cmdlist
,
6287 /* Keep the old ``set remote Z-packet ...'' working. */
6288 add_setshow_auto_boolean_cmd ("Z-packet", class_obscure
,
6289 &remote_Z_packet_detect
, "\
6290 Set use of remote protocol `Z' packets",
6291 "Show use of remote protocol `Z' packets ",
6292 set_remote_protocol_Z_packet_cmd
,
6293 show_remote_protocol_Z_packet_cmd
,
6294 &remote_set_cmdlist
, &remote_show_cmdlist
);
6296 /* Eventually initialize fileio. See fileio.c */
6297 initialize_remote_fileio (remote_set_cmdlist
, remote_show_cmdlist
);