1 /* Remote target communications for serial-line targets in custom GDB protocol
3 Copyright 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996,
4 1997, 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
6 This file is part of GDB.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 59 Temple Place - Suite 330,
21 Boston, MA 02111-1307, USA. */
23 /* See the GDB User Guide for details of the GDB remote protocol. */
26 #include "gdb_string.h"
33 /*#include "terminal.h" */
36 #include "gdb-stabs.h"
37 #include "gdbthread.h"
41 #include "gdb_assert.h"
46 #include <sys/types.h>
49 #include "event-loop.h"
50 #include "event-top.h"
56 #include "gdbcore.h" /* for exec_bfd */
58 #include "remote-fileio.h"
60 /* Prototypes for local functions */
61 static void cleanup_sigint_signal_handler (void *dummy
);
62 static void initialize_sigint_signal_handler (void);
63 static int getpkt_sane (char *buf
, long sizeof_buf
, int forever
);
65 static void handle_remote_sigint (int);
66 static void handle_remote_sigint_twice (int);
67 static void async_remote_interrupt (gdb_client_data
);
68 void async_remote_interrupt_twice (gdb_client_data
);
70 static void build_remote_gdbarch_data (void);
72 static void remote_files_info (struct target_ops
*ignore
);
74 static int remote_xfer_memory (CORE_ADDR memaddr
, char *myaddr
,
75 int len
, int should_write
,
76 struct mem_attrib
*attrib
,
77 struct target_ops
*target
);
79 static void remote_prepare_to_store (void);
81 static void remote_fetch_registers (int regno
);
83 static void remote_resume (ptid_t ptid
, int step
,
84 enum target_signal siggnal
);
85 static void remote_async_resume (ptid_t ptid
, int step
,
86 enum target_signal siggnal
);
87 static int remote_start_remote (struct ui_out
*uiout
, void *dummy
);
89 static void remote_open (char *name
, int from_tty
);
90 static void remote_async_open (char *name
, int from_tty
);
92 static void extended_remote_open (char *name
, int from_tty
);
93 static void extended_remote_async_open (char *name
, int from_tty
);
95 static void remote_open_1 (char *, int, struct target_ops
*, int extended_p
,
98 static void remote_close (int quitting
);
100 static void remote_store_registers (int regno
);
102 static void remote_mourn (void);
103 static void remote_async_mourn (void);
105 static void extended_remote_restart (void);
107 static void extended_remote_mourn (void);
109 static void extended_remote_create_inferior (char *, char *, char **);
110 static void extended_remote_async_create_inferior (char *, char *, char **);
112 static void remote_mourn_1 (struct target_ops
*);
114 static void remote_send (char *buf
, long sizeof_buf
);
116 static int readchar (int timeout
);
118 static ptid_t
remote_wait (ptid_t ptid
,
119 struct target_waitstatus
*status
);
120 static ptid_t
remote_async_wait (ptid_t ptid
,
121 struct target_waitstatus
*status
);
123 static void remote_kill (void);
124 static void remote_async_kill (void);
126 static int tohex (int nib
);
128 static void remote_detach (char *args
, int from_tty
);
130 static void remote_interrupt (int signo
);
132 static void remote_interrupt_twice (int signo
);
134 static void interrupt_query (void);
136 static void set_thread (int, int);
138 static int remote_thread_alive (ptid_t
);
140 static void get_offsets (void);
142 static long read_frame (char *buf
, long sizeof_buf
);
144 static int remote_insert_breakpoint (CORE_ADDR
, char *);
146 static int remote_remove_breakpoint (CORE_ADDR
, char *);
148 static int hexnumlen (ULONGEST num
);
150 static void init_remote_ops (void);
152 static void init_extended_remote_ops (void);
154 static void init_remote_cisco_ops (void);
156 static struct target_ops remote_cisco_ops
;
158 static void remote_stop (void);
160 static int ishex (int ch
, int *val
);
162 static int stubhex (int ch
);
164 static int hexnumstr (char *, ULONGEST
);
166 static int hexnumnstr (char *, ULONGEST
, int);
168 static CORE_ADDR
remote_address_masked (CORE_ADDR
);
170 static void print_packet (char *);
172 static unsigned long crc32 (unsigned char *, int, unsigned int);
174 static void compare_sections_command (char *, int);
176 static void packet_command (char *, int);
178 static int stub_unpack_int (char *buff
, int fieldlength
);
180 static ptid_t
remote_current_thread (ptid_t oldptid
);
182 static void remote_find_new_threads (void);
184 static void record_currthread (int currthread
);
186 static int fromhex (int a
);
188 static int hex2bin (const char *hex
, char *bin
, int count
);
190 static int bin2hex (const char *bin
, char *hex
, int count
);
192 static int putpkt_binary (char *buf
, int cnt
);
194 static void check_binary_download (CORE_ADDR addr
);
196 struct packet_config
;
198 static void show_packet_config_cmd (struct packet_config
*config
);
200 static void update_packet_config (struct packet_config
*config
);
202 void _initialize_remote (void);
204 /* Description of the remote protocol. Strictly speaking, when the
205 target is open()ed, remote.c should create a per-target description
206 of the remote protocol using that target's architecture.
207 Unfortunately, the target stack doesn't include local state. For
208 the moment keep the information in the target's architecture
213 long offset
; /* Offset into G packet. */
214 long regnum
; /* GDB's internal register number. */
215 LONGEST pnum
; /* Remote protocol register number. */
216 int in_g_packet
; /* Always part of G packet. */
217 /* long size in bytes; == DEPRECATED_REGISTER_RAW_SIZE (regnum); at present. */
218 /* char *name; == REGISTER_NAME (regnum); at present. */
223 /* Description of the remote protocol registers. */
224 long sizeof_g_packet
;
226 /* Description of the remote protocol registers indexed by REGNUM
227 (making an array of NUM_REGS + NUM_PSEUDO_REGS in size). */
228 struct packet_reg
*regs
;
230 /* This is the size (in chars) of the first response to the ``g''
231 packet. It is used as a heuristic when determining the maximum
232 size of memory-read and memory-write packets. A target will
233 typically only reserve a buffer large enough to hold the ``g''
234 packet. The size does not include packet overhead (headers and
236 long actual_register_packet_size
;
238 /* This is the maximum size (in chars) of a non read/write packet.
239 It is also used as a cap on the size of read/write packets. */
240 long remote_packet_size
;
244 /* Handle for retreving the remote protocol data from gdbarch. */
245 static struct gdbarch_data
*remote_gdbarch_data_handle
;
247 static struct remote_state
*
248 get_remote_state (void)
250 return gdbarch_data (current_gdbarch
, remote_gdbarch_data_handle
);
254 init_remote_state (struct gdbarch
*gdbarch
)
257 struct remote_state
*rs
= GDBARCH_OBSTACK_ZALLOC (gdbarch
, struct remote_state
);
259 if (DEPRECATED_REGISTER_BYTES
!= 0)
260 rs
->sizeof_g_packet
= DEPRECATED_REGISTER_BYTES
;
262 rs
->sizeof_g_packet
= 0;
264 /* Assume a 1:1 regnum<->pnum table. */
265 rs
->regs
= GDBARCH_OBSTACK_CALLOC (gdbarch
, NUM_REGS
+ NUM_PSEUDO_REGS
,
267 for (regnum
= 0; regnum
< NUM_REGS
+ NUM_PSEUDO_REGS
; regnum
++)
269 struct packet_reg
*r
= &rs
->regs
[regnum
];
272 r
->offset
= DEPRECATED_REGISTER_BYTE (regnum
);
273 r
->in_g_packet
= (regnum
< NUM_REGS
);
274 /* ...name = REGISTER_NAME (regnum); */
276 /* Compute packet size by accumulating the size of all registers. */
277 if (DEPRECATED_REGISTER_BYTES
== 0)
278 rs
->sizeof_g_packet
+= register_size (current_gdbarch
, regnum
);
281 /* Default maximum number of characters in a packet body. Many
282 remote stubs have a hardwired buffer size of 400 bytes
283 (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used
284 as the maximum packet-size to ensure that the packet and an extra
285 NUL character can always fit in the buffer. This stops GDB
286 trashing stubs that try to squeeze an extra NUL into what is
287 already a full buffer (As of 1999-12-04 that was most stubs. */
288 rs
->remote_packet_size
= 400 - 1;
290 /* Should rs->sizeof_g_packet needs more space than the
291 default, adjust the size accordingly. Remember that each byte is
292 encoded as two characters. 32 is the overhead for the packet
293 header / footer. NOTE: cagney/1999-10-26: I suspect that 8
294 (``$NN:G...#NN'') is a better guess, the below has been padded a
296 if (rs
->sizeof_g_packet
> ((rs
->remote_packet_size
- 32) / 2))
297 rs
->remote_packet_size
= (rs
->sizeof_g_packet
* 2 + 32);
299 /* This one is filled in when a ``g'' packet is received. */
300 rs
->actual_register_packet_size
= 0;
305 static struct packet_reg
*
306 packet_reg_from_regnum (struct remote_state
*rs
, long regnum
)
308 if (regnum
< 0 && regnum
>= NUM_REGS
+ NUM_PSEUDO_REGS
)
312 struct packet_reg
*r
= &rs
->regs
[regnum
];
313 gdb_assert (r
->regnum
== regnum
);
318 static struct packet_reg
*
319 packet_reg_from_pnum (struct remote_state
*rs
, LONGEST pnum
)
322 for (i
= 0; i
< NUM_REGS
+ NUM_PSEUDO_REGS
; i
++)
324 struct packet_reg
*r
= &rs
->regs
[i
];
331 /* FIXME: graces/2002-08-08: These variables should eventually be
332 bound to an instance of the target object (as in gdbarch-tdep()),
333 when such a thing exists. */
335 /* This is set to the data address of the access causing the target
336 to stop for a watchpoint. */
337 static CORE_ADDR remote_watch_data_address
;
339 /* This is non-zero if taregt stopped for a watchpoint. */
340 static int remote_stopped_by_watchpoint_p
;
343 static struct target_ops remote_ops
;
345 static struct target_ops extended_remote_ops
;
347 /* Temporary target ops. Just like the remote_ops and
348 extended_remote_ops, but with asynchronous support. */
349 static struct target_ops remote_async_ops
;
351 static struct target_ops extended_async_remote_ops
;
353 /* FIXME: cagney/1999-09-23: Even though getpkt was called with
354 ``forever'' still use the normal timeout mechanism. This is
355 currently used by the ASYNC code to guarentee that target reads
356 during the initial connect always time-out. Once getpkt has been
357 modified to return a timeout indication and, in turn
358 remote_wait()/wait_for_inferior() have gained a timeout parameter
360 static int wait_forever_enabled_p
= 1;
363 /* This variable chooses whether to send a ^C or a break when the user
364 requests program interruption. Although ^C is usually what remote
365 systems expect, and that is the default here, sometimes a break is
366 preferable instead. */
368 static int remote_break
;
370 /* Descriptor for I/O to remote machine. Initialize it to NULL so that
371 remote_open knows that we don't have a file open when the program
373 static struct serial
*remote_desc
= NULL
;
375 /* This is set by the target (thru the 'S' message)
376 to denote that the target is in kernel mode. */
377 static int cisco_kernel_mode
= 0;
379 /* This variable sets the number of bits in an address that are to be
380 sent in a memory ("M" or "m") packet. Normally, after stripping
381 leading zeros, the entire address would be sent. This variable
382 restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The
383 initial implementation of remote.c restricted the address sent in
384 memory packets to ``host::sizeof long'' bytes - (typically 32
385 bits). Consequently, for 64 bit targets, the upper 32 bits of an
386 address was never sent. Since fixing this bug may cause a break in
387 some remote targets this variable is principly provided to
388 facilitate backward compatibility. */
390 static int remote_address_size
;
392 /* Tempoary to track who currently owns the terminal. See
393 target_async_terminal_* for more details. */
395 static int remote_async_terminal_ours_p
;
398 /* User configurable variables for the number of characters in a
399 memory read/write packet. MIN ((rs->remote_packet_size),
400 rs->sizeof_g_packet) is the default. Some targets need smaller
401 values (fifo overruns, et.al.) and some users need larger values
402 (speed up transfers). The variables ``preferred_*'' (the user
403 request), ``current_*'' (what was actually set) and ``forced_*''
404 (Positive - a soft limit, negative - a hard limit). */
406 struct memory_packet_config
413 /* Compute the current size of a read/write packet. Since this makes
414 use of ``actual_register_packet_size'' the computation is dynamic. */
417 get_memory_packet_size (struct memory_packet_config
*config
)
419 struct remote_state
*rs
= get_remote_state ();
420 /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk
421 law?) that some hosts don't cope very well with large alloca()
422 calls. Eventually the alloca() code will be replaced by calls to
423 xmalloc() and make_cleanups() allowing this restriction to either
424 be lifted or removed. */
425 #ifndef MAX_REMOTE_PACKET_SIZE
426 #define MAX_REMOTE_PACKET_SIZE 16384
428 /* NOTE: 16 is just chosen at random. */
429 #ifndef MIN_REMOTE_PACKET_SIZE
430 #define MIN_REMOTE_PACKET_SIZE 16
435 if (config
->size
<= 0)
436 what_they_get
= MAX_REMOTE_PACKET_SIZE
;
438 what_they_get
= config
->size
;
442 what_they_get
= (rs
->remote_packet_size
);
443 /* Limit the packet to the size specified by the user. */
445 && what_they_get
> config
->size
)
446 what_they_get
= config
->size
;
447 /* Limit it to the size of the targets ``g'' response. */
448 if ((rs
->actual_register_packet_size
) > 0
449 && what_they_get
> (rs
->actual_register_packet_size
))
450 what_they_get
= (rs
->actual_register_packet_size
);
452 if (what_they_get
> MAX_REMOTE_PACKET_SIZE
)
453 what_they_get
= MAX_REMOTE_PACKET_SIZE
;
454 if (what_they_get
< MIN_REMOTE_PACKET_SIZE
)
455 what_they_get
= MIN_REMOTE_PACKET_SIZE
;
456 return what_they_get
;
459 /* Update the size of a read/write packet. If they user wants
460 something really big then do a sanity check. */
463 set_memory_packet_size (char *args
, struct memory_packet_config
*config
)
465 int fixed_p
= config
->fixed_p
;
466 long size
= config
->size
;
468 error ("Argument required (integer, `fixed' or `limited').");
469 else if (strcmp (args
, "hard") == 0
470 || strcmp (args
, "fixed") == 0)
472 else if (strcmp (args
, "soft") == 0
473 || strcmp (args
, "limit") == 0)
478 size
= strtoul (args
, &end
, 0);
480 error ("Invalid %s (bad syntax).", config
->name
);
482 /* Instead of explicitly capping the size of a packet to
483 MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is
484 instead allowed to set the size to something arbitrarily
486 if (size
> MAX_REMOTE_PACKET_SIZE
)
487 error ("Invalid %s (too large).", config
->name
);
491 if (fixed_p
&& !config
->fixed_p
)
493 if (! query ("The target may not be able to correctly handle a %s\n"
494 "of %ld bytes. Change the packet size? ",
496 error ("Packet size not changed.");
498 /* Update the config. */
499 config
->fixed_p
= fixed_p
;
504 show_memory_packet_size (struct memory_packet_config
*config
)
506 printf_filtered ("The %s is %ld. ", config
->name
, config
->size
);
508 printf_filtered ("Packets are fixed at %ld bytes.\n",
509 get_memory_packet_size (config
));
511 printf_filtered ("Packets are limited to %ld bytes.\n",
512 get_memory_packet_size (config
));
515 static struct memory_packet_config memory_write_packet_config
=
517 "memory-write-packet-size",
521 set_memory_write_packet_size (char *args
, int from_tty
)
523 set_memory_packet_size (args
, &memory_write_packet_config
);
527 show_memory_write_packet_size (char *args
, int from_tty
)
529 show_memory_packet_size (&memory_write_packet_config
);
533 get_memory_write_packet_size (void)
535 return get_memory_packet_size (&memory_write_packet_config
);
538 static struct memory_packet_config memory_read_packet_config
=
540 "memory-read-packet-size",
544 set_memory_read_packet_size (char *args
, int from_tty
)
546 set_memory_packet_size (args
, &memory_read_packet_config
);
550 show_memory_read_packet_size (char *args
, int from_tty
)
552 show_memory_packet_size (&memory_read_packet_config
);
556 get_memory_read_packet_size (void)
558 struct remote_state
*rs
= get_remote_state ();
559 long size
= get_memory_packet_size (&memory_read_packet_config
);
560 /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an
561 extra buffer size argument before the memory read size can be
562 increased beyond (rs->remote_packet_size). */
563 if (size
> (rs
->remote_packet_size
))
564 size
= (rs
->remote_packet_size
);
569 /* Generic configuration support for packets the stub optionally
570 supports. Allows the user to specify the use of the packet as well
571 as allowing GDB to auto-detect support in the remote stub. */
575 PACKET_SUPPORT_UNKNOWN
= 0,
584 enum auto_boolean detect
;
585 enum packet_support support
;
588 /* Analyze a packet's return value and update the packet config
599 update_packet_config (struct packet_config
*config
)
601 switch (config
->detect
)
603 case AUTO_BOOLEAN_TRUE
:
604 config
->support
= PACKET_ENABLE
;
606 case AUTO_BOOLEAN_FALSE
:
607 config
->support
= PACKET_DISABLE
;
609 case AUTO_BOOLEAN_AUTO
:
610 config
->support
= PACKET_SUPPORT_UNKNOWN
;
616 show_packet_config_cmd (struct packet_config
*config
)
618 char *support
= "internal-error";
619 switch (config
->support
)
625 support
= "disabled";
627 case PACKET_SUPPORT_UNKNOWN
:
631 switch (config
->detect
)
633 case AUTO_BOOLEAN_AUTO
:
634 printf_filtered ("Support for remote protocol `%s' (%s) packet is auto-detected, currently %s.\n",
635 config
->name
, config
->title
, support
);
637 case AUTO_BOOLEAN_TRUE
:
638 case AUTO_BOOLEAN_FALSE
:
639 printf_filtered ("Support for remote protocol `%s' (%s) packet is currently %s.\n",
640 config
->name
, config
->title
, support
);
646 add_packet_config_cmd (struct packet_config
*config
,
649 cmd_sfunc_ftype
*set_func
,
650 cmd_sfunc_ftype
*show_func
,
651 struct cmd_list_element
**set_remote_list
,
652 struct cmd_list_element
**show_remote_list
,
655 struct cmd_list_element
*set_cmd
;
656 struct cmd_list_element
*show_cmd
;
661 config
->title
= title
;
662 config
->detect
= AUTO_BOOLEAN_AUTO
;
663 config
->support
= PACKET_SUPPORT_UNKNOWN
;
664 xasprintf (&set_doc
, "Set use of remote protocol `%s' (%s) packet",
666 xasprintf (&show_doc
, "Show current use of remote protocol `%s' (%s) packet",
668 /* set/show TITLE-packet {auto,on,off} */
669 xasprintf (&cmd_name
, "%s-packet", title
);
670 add_setshow_auto_boolean_cmd (cmd_name
, class_obscure
,
671 &config
->detect
, set_doc
, show_doc
,
673 set_remote_list
, show_remote_list
);
674 /* set/show remote NAME-packet {auto,on,off} -- legacy */
678 xasprintf (&legacy_name
, "%s-packet", name
);
679 add_alias_cmd (legacy_name
, cmd_name
, class_obscure
, 0,
681 add_alias_cmd (legacy_name
, cmd_name
, class_obscure
, 0,
686 static enum packet_result
687 packet_ok (const char *buf
, struct packet_config
*config
)
691 /* The stub recognized the packet request. Check that the
692 operation succeeded. */
693 switch (config
->support
)
695 case PACKET_SUPPORT_UNKNOWN
:
697 fprintf_unfiltered (gdb_stdlog
,
698 "Packet %s (%s) is supported\n",
699 config
->name
, config
->title
);
700 config
->support
= PACKET_ENABLE
;
703 internal_error (__FILE__
, __LINE__
,
704 "packet_ok: attempt to use a disabled packet");
709 if (buf
[0] == 'O' && buf
[1] == 'K' && buf
[2] == '\0')
710 /* "OK" - definitly OK. */
713 && isxdigit (buf
[1]) && isxdigit (buf
[2])
715 /* "Enn" - definitly an error. */
717 /* The packet may or may not be OK. Just assume it is */
722 /* The stub does not support the packet. */
723 switch (config
->support
)
726 if (config
->detect
== AUTO_BOOLEAN_AUTO
)
727 /* If the stub previously indicated that the packet was
728 supported then there is a protocol error.. */
729 error ("Protocol error: %s (%s) conflicting enabled responses.",
730 config
->name
, config
->title
);
732 /* The user set it wrong. */
733 error ("Enabled packet %s (%s) not recognized by stub",
734 config
->name
, config
->title
);
736 case PACKET_SUPPORT_UNKNOWN
:
738 fprintf_unfiltered (gdb_stdlog
,
739 "Packet %s (%s) is NOT supported\n",
740 config
->name
, config
->title
);
741 config
->support
= PACKET_DISABLE
;
746 return PACKET_UNKNOWN
;
750 /* Should we try the 'vCont' (descriptive resume) request? */
751 static struct packet_config remote_protocol_vcont
;
754 set_remote_protocol_vcont_packet_cmd (char *args
, int from_tty
,
755 struct cmd_list_element
*c
)
757 update_packet_config (&remote_protocol_vcont
);
761 show_remote_protocol_vcont_packet_cmd (char *args
, int from_tty
,
762 struct cmd_list_element
*c
)
764 show_packet_config_cmd (&remote_protocol_vcont
);
767 /* Should we try the 'qSymbol' (target symbol lookup service) request? */
768 static struct packet_config remote_protocol_qSymbol
;
771 set_remote_protocol_qSymbol_packet_cmd (char *args
, int from_tty
,
772 struct cmd_list_element
*c
)
774 update_packet_config (&remote_protocol_qSymbol
);
778 show_remote_protocol_qSymbol_packet_cmd (char *args
, int from_tty
,
779 struct cmd_list_element
*c
)
781 show_packet_config_cmd (&remote_protocol_qSymbol
);
784 /* Should we try the 'e' (step over range) request? */
785 static struct packet_config remote_protocol_e
;
788 set_remote_protocol_e_packet_cmd (char *args
, int from_tty
,
789 struct cmd_list_element
*c
)
791 update_packet_config (&remote_protocol_e
);
795 show_remote_protocol_e_packet_cmd (char *args
, int from_tty
,
796 struct cmd_list_element
*c
)
798 show_packet_config_cmd (&remote_protocol_e
);
802 /* Should we try the 'E' (step over range / w signal #) request? */
803 static struct packet_config remote_protocol_E
;
806 set_remote_protocol_E_packet_cmd (char *args
, int from_tty
,
807 struct cmd_list_element
*c
)
809 update_packet_config (&remote_protocol_E
);
813 show_remote_protocol_E_packet_cmd (char *args
, int from_tty
,
814 struct cmd_list_element
*c
)
816 show_packet_config_cmd (&remote_protocol_E
);
820 /* Should we try the 'P' (set register) request? */
822 static struct packet_config remote_protocol_P
;
825 set_remote_protocol_P_packet_cmd (char *args
, int from_tty
,
826 struct cmd_list_element
*c
)
828 update_packet_config (&remote_protocol_P
);
832 show_remote_protocol_P_packet_cmd (char *args
, int from_tty
,
833 struct cmd_list_element
*c
)
835 show_packet_config_cmd (&remote_protocol_P
);
838 /* Should we try one of the 'Z' requests? */
842 Z_PACKET_SOFTWARE_BP
,
843 Z_PACKET_HARDWARE_BP
,
850 static struct packet_config remote_protocol_Z
[NR_Z_PACKET_TYPES
];
852 /* FIXME: Instead of having all these boiler plate functions, the
853 command callback should include a context argument. */
856 set_remote_protocol_Z_software_bp_packet_cmd (char *args
, int from_tty
,
857 struct cmd_list_element
*c
)
859 update_packet_config (&remote_protocol_Z
[Z_PACKET_SOFTWARE_BP
]);
863 show_remote_protocol_Z_software_bp_packet_cmd (char *args
, int from_tty
,
864 struct cmd_list_element
*c
)
866 show_packet_config_cmd (&remote_protocol_Z
[Z_PACKET_SOFTWARE_BP
]);
870 set_remote_protocol_Z_hardware_bp_packet_cmd (char *args
, int from_tty
,
871 struct cmd_list_element
*c
)
873 update_packet_config (&remote_protocol_Z
[Z_PACKET_HARDWARE_BP
]);
877 show_remote_protocol_Z_hardware_bp_packet_cmd (char *args
, int from_tty
,
878 struct cmd_list_element
*c
)
880 show_packet_config_cmd (&remote_protocol_Z
[Z_PACKET_HARDWARE_BP
]);
884 set_remote_protocol_Z_write_wp_packet_cmd (char *args
, int from_tty
,
885 struct cmd_list_element
*c
)
887 update_packet_config (&remote_protocol_Z
[Z_PACKET_WRITE_WP
]);
891 show_remote_protocol_Z_write_wp_packet_cmd (char *args
, int from_tty
,
892 struct cmd_list_element
*c
)
894 show_packet_config_cmd (&remote_protocol_Z
[Z_PACKET_WRITE_WP
]);
898 set_remote_protocol_Z_read_wp_packet_cmd (char *args
, int from_tty
,
899 struct cmd_list_element
*c
)
901 update_packet_config (&remote_protocol_Z
[Z_PACKET_READ_WP
]);
905 show_remote_protocol_Z_read_wp_packet_cmd (char *args
, int from_tty
,
906 struct cmd_list_element
*c
)
908 show_packet_config_cmd (&remote_protocol_Z
[Z_PACKET_READ_WP
]);
912 set_remote_protocol_Z_access_wp_packet_cmd (char *args
, int from_tty
,
913 struct cmd_list_element
*c
)
915 update_packet_config (&remote_protocol_Z
[Z_PACKET_ACCESS_WP
]);
919 show_remote_protocol_Z_access_wp_packet_cmd (char *args
, int from_tty
,
920 struct cmd_list_element
*c
)
922 show_packet_config_cmd (&remote_protocol_Z
[Z_PACKET_ACCESS_WP
]);
925 /* For compatibility with older distributions. Provide a ``set remote
926 Z-packet ...'' command that updates all the Z packet types. */
928 static enum auto_boolean remote_Z_packet_detect
;
931 set_remote_protocol_Z_packet_cmd (char *args
, int from_tty
,
932 struct cmd_list_element
*c
)
935 for (i
= 0; i
< NR_Z_PACKET_TYPES
; i
++)
937 remote_protocol_Z
[i
].detect
= remote_Z_packet_detect
;
938 update_packet_config (&remote_protocol_Z
[i
]);
943 show_remote_protocol_Z_packet_cmd (char *args
, int from_tty
,
944 struct cmd_list_element
*c
)
947 for (i
= 0; i
< NR_Z_PACKET_TYPES
; i
++)
949 show_packet_config_cmd (&remote_protocol_Z
[i
]);
953 /* Should we try the 'X' (remote binary download) packet?
955 This variable (available to the user via "set remote X-packet")
956 dictates whether downloads are sent in binary (via the 'X' packet).
957 We assume that the stub can, and attempt to do it. This will be
958 cleared if the stub does not understand it. This switch is still
959 needed, though in cases when the packet is supported in the stub,
960 but the connection does not allow it (i.e., 7-bit serial connection
963 static struct packet_config remote_protocol_binary_download
;
965 /* Should we try the 'ThreadInfo' query packet?
967 This variable (NOT available to the user: auto-detect only!)
968 determines whether GDB will use the new, simpler "ThreadInfo"
969 query or the older, more complex syntax for thread queries.
970 This is an auto-detect variable (set to true at each connect,
971 and set to false when the target fails to recognize it). */
973 static int use_threadinfo_query
;
974 static int use_threadextra_query
;
977 set_remote_protocol_binary_download_cmd (char *args
,
979 struct cmd_list_element
*c
)
981 update_packet_config (&remote_protocol_binary_download
);
985 show_remote_protocol_binary_download_cmd (char *args
, int from_tty
,
986 struct cmd_list_element
*c
)
988 show_packet_config_cmd (&remote_protocol_binary_download
);
992 /* Tokens for use by the asynchronous signal handlers for SIGINT */
993 static void *sigint_remote_twice_token
;
994 static void *sigint_remote_token
;
996 /* These are pointers to hook functions that may be set in order to
997 modify resume/wait behavior for a particular architecture. */
999 void (*target_resume_hook
) (void);
1000 void (*target_wait_loop_hook
) (void);
1004 /* These are the threads which we last sent to the remote system.
1005 -1 for all or -2 for not sent yet. */
1006 static int general_thread
;
1007 static int continue_thread
;
1009 /* Call this function as a result of
1010 1) A halt indication (T packet) containing a thread id
1011 2) A direct query of currthread
1012 3) Successful execution of set thread
1016 record_currthread (int currthread
)
1018 general_thread
= currthread
;
1020 /* If this is a new thread, add it to GDB's thread list.
1021 If we leave it up to WFI to do this, bad things will happen. */
1022 if (!in_thread_list (pid_to_ptid (currthread
)))
1024 add_thread (pid_to_ptid (currthread
));
1025 ui_out_text (uiout
, "[New ");
1026 ui_out_text (uiout
, target_pid_to_str (pid_to_ptid (currthread
)));
1027 ui_out_text (uiout
, "]\n");
1031 #define MAGIC_NULL_PID 42000
1034 set_thread (int th
, int gen
)
1036 struct remote_state
*rs
= get_remote_state ();
1037 char *buf
= alloca (rs
->remote_packet_size
);
1038 int state
= gen
? general_thread
: continue_thread
;
1044 buf
[1] = gen
? 'g' : 'c';
1045 if (th
== MAGIC_NULL_PID
)
1051 sprintf (&buf
[2], "-%x", -th
);
1053 sprintf (&buf
[2], "%x", th
);
1055 getpkt (buf
, (rs
->remote_packet_size
), 0);
1057 general_thread
= th
;
1059 continue_thread
= th
;
1062 /* Return nonzero if the thread TH is still alive on the remote system. */
1065 remote_thread_alive (ptid_t ptid
)
1067 int tid
= PIDGET (ptid
);
1071 sprintf (buf
, "T-%08x", -tid
);
1073 sprintf (buf
, "T%08x", tid
);
1075 getpkt (buf
, sizeof (buf
), 0);
1076 return (buf
[0] == 'O' && buf
[1] == 'K');
1079 /* About these extended threadlist and threadinfo packets. They are
1080 variable length packets but, the fields within them are often fixed
1081 length. They are redundent enough to send over UDP as is the
1082 remote protocol in general. There is a matching unit test module
1085 #define OPAQUETHREADBYTES 8
1087 /* a 64 bit opaque identifier */
1088 typedef unsigned char threadref
[OPAQUETHREADBYTES
];
1090 /* WARNING: This threadref data structure comes from the remote O.S., libstub
1091 protocol encoding, and remote.c. it is not particularly changable */
1093 /* Right now, the internal structure is int. We want it to be bigger.
1097 typedef int gdb_threadref
; /* internal GDB thread reference */
1099 /* gdb_ext_thread_info is an internal GDB data structure which is
1100 equivalint to the reply of the remote threadinfo packet */
1102 struct gdb_ext_thread_info
1104 threadref threadid
; /* External form of thread reference */
1105 int active
; /* Has state interesting to GDB? , regs, stack */
1106 char display
[256]; /* Brief state display, name, blocked/syspended */
1107 char shortname
[32]; /* To be used to name threads */
1108 char more_display
[256]; /* Long info, statistics, queue depth, whatever */
1111 /* The volume of remote transfers can be limited by submitting
1112 a mask containing bits specifying the desired information.
1113 Use a union of these values as the 'selection' parameter to
1114 get_thread_info. FIXME: Make these TAG names more thread specific.
1117 #define TAG_THREADID 1
1118 #define TAG_EXISTS 2
1119 #define TAG_DISPLAY 4
1120 #define TAG_THREADNAME 8
1121 #define TAG_MOREDISPLAY 16
1123 #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES*2)
1125 char *unpack_varlen_hex (char *buff
, ULONGEST
*result
);
1127 static char *unpack_nibble (char *buf
, int *val
);
1129 static char *pack_nibble (char *buf
, int nibble
);
1131 static char *pack_hex_byte (char *pkt
, int /*unsigned char */ byte
);
1133 static char *unpack_byte (char *buf
, int *value
);
1135 static char *pack_int (char *buf
, int value
);
1137 static char *unpack_int (char *buf
, int *value
);
1139 static char *unpack_string (char *src
, char *dest
, int length
);
1141 static char *pack_threadid (char *pkt
, threadref
* id
);
1143 static char *unpack_threadid (char *inbuf
, threadref
* id
);
1145 void int_to_threadref (threadref
* id
, int value
);
1147 static int threadref_to_int (threadref
* ref
);
1149 static void copy_threadref (threadref
* dest
, threadref
* src
);
1151 static int threadmatch (threadref
* dest
, threadref
* src
);
1153 static char *pack_threadinfo_request (char *pkt
, int mode
, threadref
* id
);
1155 static int remote_unpack_thread_info_response (char *pkt
,
1156 threadref
* expectedref
,
1157 struct gdb_ext_thread_info
1161 static int remote_get_threadinfo (threadref
* threadid
, int fieldset
, /*TAG mask */
1162 struct gdb_ext_thread_info
*info
);
1164 static int adapt_remote_get_threadinfo (gdb_threadref
* ref
,
1166 struct gdb_ext_thread_info
*info
);
1168 static char *pack_threadlist_request (char *pkt
, int startflag
,
1170 threadref
* nextthread
);
1172 static int parse_threadlist_response (char *pkt
,
1174 threadref
* original_echo
,
1175 threadref
* resultlist
, int *doneflag
);
1177 static int remote_get_threadlist (int startflag
,
1178 threadref
* nextthread
,
1181 int *result_count
, threadref
* threadlist
);
1183 typedef int (*rmt_thread_action
) (threadref
* ref
, void *context
);
1185 static int remote_threadlist_iterator (rmt_thread_action stepfunction
,
1186 void *context
, int looplimit
);
1188 static int remote_newthread_step (threadref
* ref
, void *context
);
1190 /* encode 64 bits in 16 chars of hex */
1192 static const char hexchars
[] = "0123456789abcdef";
1195 ishex (int ch
, int *val
)
1197 if ((ch
>= 'a') && (ch
<= 'f'))
1199 *val
= ch
- 'a' + 10;
1202 if ((ch
>= 'A') && (ch
<= 'F'))
1204 *val
= ch
- 'A' + 10;
1207 if ((ch
>= '0') && (ch
<= '9'))
1218 if (ch
>= 'a' && ch
<= 'f')
1219 return ch
- 'a' + 10;
1220 if (ch
>= '0' && ch
<= '9')
1222 if (ch
>= 'A' && ch
<= 'F')
1223 return ch
- 'A' + 10;
1228 stub_unpack_int (char *buff
, int fieldlength
)
1235 nibble
= stubhex (*buff
++);
1239 retval
= retval
<< 4;
1245 unpack_varlen_hex (char *buff
, /* packet to parse */
1251 while (ishex (*buff
, &nibble
))
1254 retval
= retval
<< 4;
1255 retval
|= nibble
& 0x0f;
1262 unpack_nibble (char *buf
, int *val
)
1264 ishex (*buf
++, val
);
1269 pack_nibble (char *buf
, int nibble
)
1271 *buf
++ = hexchars
[(nibble
& 0x0f)];
1276 pack_hex_byte (char *pkt
, int byte
)
1278 *pkt
++ = hexchars
[(byte
>> 4) & 0xf];
1279 *pkt
++ = hexchars
[(byte
& 0xf)];
1284 unpack_byte (char *buf
, int *value
)
1286 *value
= stub_unpack_int (buf
, 2);
1291 pack_int (char *buf
, int value
)
1293 buf
= pack_hex_byte (buf
, (value
>> 24) & 0xff);
1294 buf
= pack_hex_byte (buf
, (value
>> 16) & 0xff);
1295 buf
= pack_hex_byte (buf
, (value
>> 8) & 0x0ff);
1296 buf
= pack_hex_byte (buf
, (value
& 0xff));
1301 unpack_int (char *buf
, int *value
)
1303 *value
= stub_unpack_int (buf
, 8);
1307 #if 0 /* currently unused, uncomment when needed */
1308 static char *pack_string (char *pkt
, char *string
);
1311 pack_string (char *pkt
, char *string
)
1316 len
= strlen (string
);
1318 len
= 200; /* Bigger than most GDB packets, junk??? */
1319 pkt
= pack_hex_byte (pkt
, len
);
1323 if ((ch
== '\0') || (ch
== '#'))
1324 ch
= '*'; /* Protect encapsulation */
1329 #endif /* 0 (unused) */
1332 unpack_string (char *src
, char *dest
, int length
)
1341 pack_threadid (char *pkt
, threadref
*id
)
1344 unsigned char *altid
;
1346 altid
= (unsigned char *) id
;
1347 limit
= pkt
+ BUF_THREAD_ID_SIZE
;
1349 pkt
= pack_hex_byte (pkt
, *altid
++);
1355 unpack_threadid (char *inbuf
, threadref
*id
)
1358 char *limit
= inbuf
+ BUF_THREAD_ID_SIZE
;
1361 altref
= (char *) id
;
1363 while (inbuf
< limit
)
1365 x
= stubhex (*inbuf
++);
1366 y
= stubhex (*inbuf
++);
1367 *altref
++ = (x
<< 4) | y
;
1372 /* Externally, threadrefs are 64 bits but internally, they are still
1373 ints. This is due to a mismatch of specifications. We would like
1374 to use 64bit thread references internally. This is an adapter
1378 int_to_threadref (threadref
*id
, int value
)
1380 unsigned char *scan
;
1382 scan
= (unsigned char *) id
;
1388 *scan
++ = (value
>> 24) & 0xff;
1389 *scan
++ = (value
>> 16) & 0xff;
1390 *scan
++ = (value
>> 8) & 0xff;
1391 *scan
++ = (value
& 0xff);
1395 threadref_to_int (threadref
*ref
)
1398 unsigned char *scan
;
1400 scan
= (char *) ref
;
1404 value
= (value
<< 8) | ((*scan
++) & 0xff);
1409 copy_threadref (threadref
*dest
, threadref
*src
)
1412 unsigned char *csrc
, *cdest
;
1414 csrc
= (unsigned char *) src
;
1415 cdest
= (unsigned char *) dest
;
1422 threadmatch (threadref
*dest
, threadref
*src
)
1424 /* things are broken right now, so just assume we got a match */
1426 unsigned char *srcp
, *destp
;
1428 srcp
= (char *) src
;
1429 destp
= (char *) dest
;
1433 result
&= (*srcp
++ == *destp
++) ? 1 : 0;
1440 threadid:1, # always request threadid
1447 /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */
1450 pack_threadinfo_request (char *pkt
, int mode
, threadref
*id
)
1452 *pkt
++ = 'q'; /* Info Query */
1453 *pkt
++ = 'P'; /* process or thread info */
1454 pkt
= pack_int (pkt
, mode
); /* mode */
1455 pkt
= pack_threadid (pkt
, id
); /* threadid */
1456 *pkt
= '\0'; /* terminate */
1460 /* These values tag the fields in a thread info response packet */
1461 /* Tagging the fields allows us to request specific fields and to
1462 add more fields as time goes by */
1464 #define TAG_THREADID 1 /* Echo the thread identifier */
1465 #define TAG_EXISTS 2 /* Is this process defined enough to
1466 fetch registers and its stack */
1467 #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */
1468 #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is */
1469 #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about
1473 remote_unpack_thread_info_response (char *pkt
, threadref
*expectedref
,
1474 struct gdb_ext_thread_info
*info
)
1476 struct remote_state
*rs
= get_remote_state ();
1480 char *limit
= pkt
+ (rs
->remote_packet_size
); /* plausable parsing limit */
1483 /* info->threadid = 0; FIXME: implement zero_threadref */
1485 info
->display
[0] = '\0';
1486 info
->shortname
[0] = '\0';
1487 info
->more_display
[0] = '\0';
1489 /* Assume the characters indicating the packet type have been stripped */
1490 pkt
= unpack_int (pkt
, &mask
); /* arg mask */
1491 pkt
= unpack_threadid (pkt
, &ref
);
1494 warning ("Incomplete response to threadinfo request\n");
1495 if (!threadmatch (&ref
, expectedref
))
1496 { /* This is an answer to a different request */
1497 warning ("ERROR RMT Thread info mismatch\n");
1500 copy_threadref (&info
->threadid
, &ref
);
1502 /* Loop on tagged fields , try to bail if somthing goes wrong */
1504 while ((pkt
< limit
) && mask
&& *pkt
) /* packets are terminated with nulls */
1506 pkt
= unpack_int (pkt
, &tag
); /* tag */
1507 pkt
= unpack_byte (pkt
, &length
); /* length */
1508 if (!(tag
& mask
)) /* tags out of synch with mask */
1510 warning ("ERROR RMT: threadinfo tag mismatch\n");
1514 if (tag
== TAG_THREADID
)
1518 warning ("ERROR RMT: length of threadid is not 16\n");
1522 pkt
= unpack_threadid (pkt
, &ref
);
1523 mask
= mask
& ~TAG_THREADID
;
1526 if (tag
== TAG_EXISTS
)
1528 info
->active
= stub_unpack_int (pkt
, length
);
1530 mask
= mask
& ~(TAG_EXISTS
);
1533 warning ("ERROR RMT: 'exists' length too long\n");
1539 if (tag
== TAG_THREADNAME
)
1541 pkt
= unpack_string (pkt
, &info
->shortname
[0], length
);
1542 mask
= mask
& ~TAG_THREADNAME
;
1545 if (tag
== TAG_DISPLAY
)
1547 pkt
= unpack_string (pkt
, &info
->display
[0], length
);
1548 mask
= mask
& ~TAG_DISPLAY
;
1551 if (tag
== TAG_MOREDISPLAY
)
1553 pkt
= unpack_string (pkt
, &info
->more_display
[0], length
);
1554 mask
= mask
& ~TAG_MOREDISPLAY
;
1557 warning ("ERROR RMT: unknown thread info tag\n");
1558 break; /* Not a tag we know about */
1564 remote_get_threadinfo (threadref
*threadid
, int fieldset
, /* TAG mask */
1565 struct gdb_ext_thread_info
*info
)
1567 struct remote_state
*rs
= get_remote_state ();
1569 char *threadinfo_pkt
= alloca (rs
->remote_packet_size
);
1571 pack_threadinfo_request (threadinfo_pkt
, fieldset
, threadid
);
1572 putpkt (threadinfo_pkt
);
1573 getpkt (threadinfo_pkt
, (rs
->remote_packet_size
), 0);
1574 result
= remote_unpack_thread_info_response (threadinfo_pkt
+ 2, threadid
,
1579 /* Unfortunately, 61 bit thread-ids are bigger than the internal
1580 representation of a threadid. */
1583 adapt_remote_get_threadinfo (gdb_threadref
*ref
, int selection
,
1584 struct gdb_ext_thread_info
*info
)
1588 int_to_threadref (&lclref
, *ref
);
1589 return remote_get_threadinfo (&lclref
, selection
, info
);
1592 /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */
1595 pack_threadlist_request (char *pkt
, int startflag
, int threadcount
,
1596 threadref
*nextthread
)
1598 *pkt
++ = 'q'; /* info query packet */
1599 *pkt
++ = 'L'; /* Process LIST or threadLIST request */
1600 pkt
= pack_nibble (pkt
, startflag
); /* initflag 1 bytes */
1601 pkt
= pack_hex_byte (pkt
, threadcount
); /* threadcount 2 bytes */
1602 pkt
= pack_threadid (pkt
, nextthread
); /* 64 bit thread identifier */
1607 /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */
1610 parse_threadlist_response (char *pkt
, int result_limit
,
1611 threadref
*original_echo
, threadref
*resultlist
,
1614 struct remote_state
*rs
= get_remote_state ();
1616 int count
, resultcount
, done
;
1619 /* Assume the 'q' and 'M chars have been stripped. */
1620 limit
= pkt
+ ((rs
->remote_packet_size
) - BUF_THREAD_ID_SIZE
); /* done parse past here */
1621 pkt
= unpack_byte (pkt
, &count
); /* count field */
1622 pkt
= unpack_nibble (pkt
, &done
);
1623 /* The first threadid is the argument threadid. */
1624 pkt
= unpack_threadid (pkt
, original_echo
); /* should match query packet */
1625 while ((count
-- > 0) && (pkt
< limit
))
1627 pkt
= unpack_threadid (pkt
, resultlist
++);
1628 if (resultcount
++ >= result_limit
)
1637 remote_get_threadlist (int startflag
, threadref
*nextthread
, int result_limit
,
1638 int *done
, int *result_count
, threadref
*threadlist
)
1640 struct remote_state
*rs
= get_remote_state ();
1641 static threadref echo_nextthread
;
1642 char *threadlist_packet
= alloca (rs
->remote_packet_size
);
1643 char *t_response
= alloca (rs
->remote_packet_size
);
1646 /* Trancate result limit to be smaller than the packet size */
1647 if ((((result_limit
+ 1) * BUF_THREAD_ID_SIZE
) + 10) >= (rs
->remote_packet_size
))
1648 result_limit
= ((rs
->remote_packet_size
) / BUF_THREAD_ID_SIZE
) - 2;
1650 pack_threadlist_request (threadlist_packet
,
1651 startflag
, result_limit
, nextthread
);
1652 putpkt (threadlist_packet
);
1653 getpkt (t_response
, (rs
->remote_packet_size
), 0);
1656 parse_threadlist_response (t_response
+ 2, result_limit
, &echo_nextthread
,
1659 if (!threadmatch (&echo_nextthread
, nextthread
))
1661 /* FIXME: This is a good reason to drop the packet */
1662 /* Possably, there is a duplicate response */
1664 retransmit immediatly - race conditions
1665 retransmit after timeout - yes
1667 wait for packet, then exit
1669 warning ("HMM: threadlist did not echo arg thread, dropping it\n");
1670 return 0; /* I choose simply exiting */
1672 if (*result_count
<= 0)
1676 warning ("RMT ERROR : failed to get remote thread list\n");
1679 return result
; /* break; */
1681 if (*result_count
> result_limit
)
1684 warning ("RMT ERROR: threadlist response longer than requested\n");
1690 /* This is the interface between remote and threads, remotes upper interface */
1692 /* remote_find_new_threads retrieves the thread list and for each
1693 thread in the list, looks up the thread in GDB's internal list,
1694 ading the thread if it does not already exist. This involves
1695 getting partial thread lists from the remote target so, polling the
1696 quit_flag is required. */
1699 /* About this many threadisds fit in a packet. */
1701 #define MAXTHREADLISTRESULTS 32
1704 remote_threadlist_iterator (rmt_thread_action stepfunction
, void *context
,
1707 int done
, i
, result_count
;
1711 static threadref nextthread
;
1712 static threadref resultthreadlist
[MAXTHREADLISTRESULTS
];
1717 if (loopcount
++ > looplimit
)
1720 warning ("Remote fetch threadlist -infinite loop-\n");
1723 if (!remote_get_threadlist (startflag
, &nextthread
, MAXTHREADLISTRESULTS
,
1724 &done
, &result_count
, resultthreadlist
))
1729 /* clear for later iterations */
1731 /* Setup to resume next batch of thread references, set nextthread. */
1732 if (result_count
>= 1)
1733 copy_threadref (&nextthread
, &resultthreadlist
[result_count
- 1]);
1735 while (result_count
--)
1736 if (!(result
= (*stepfunction
) (&resultthreadlist
[i
++], context
)))
1743 remote_newthread_step (threadref
*ref
, void *context
)
1747 ptid
= pid_to_ptid (threadref_to_int (ref
));
1749 if (!in_thread_list (ptid
))
1751 return 1; /* continue iterator */
1754 #define CRAZY_MAX_THREADS 1000
1757 remote_current_thread (ptid_t oldpid
)
1759 struct remote_state
*rs
= get_remote_state ();
1760 char *buf
= alloca (rs
->remote_packet_size
);
1763 getpkt (buf
, (rs
->remote_packet_size
), 0);
1764 if (buf
[0] == 'Q' && buf
[1] == 'C')
1765 return pid_to_ptid (strtol (&buf
[2], NULL
, 16));
1770 /* Find new threads for info threads command.
1771 * Original version, using John Metzler's thread protocol.
1775 remote_find_new_threads (void)
1777 remote_threadlist_iterator (remote_newthread_step
, 0,
1779 if (PIDGET (inferior_ptid
) == MAGIC_NULL_PID
) /* ack ack ack */
1780 inferior_ptid
= remote_current_thread (inferior_ptid
);
1784 * Find all threads for info threads command.
1785 * Uses new thread protocol contributed by Cisco.
1786 * Falls back and attempts to use the older method (above)
1787 * if the target doesn't respond to the new method.
1791 remote_threads_info (void)
1793 struct remote_state
*rs
= get_remote_state ();
1794 char *buf
= alloca (rs
->remote_packet_size
);
1798 if (remote_desc
== 0) /* paranoia */
1799 error ("Command can only be used when connected to the remote target.");
1801 if (use_threadinfo_query
)
1803 putpkt ("qfThreadInfo");
1805 getpkt (bufp
, (rs
->remote_packet_size
), 0);
1806 if (bufp
[0] != '\0') /* q packet recognized */
1808 while (*bufp
++ == 'm') /* reply contains one or more TID */
1812 tid
= strtol (bufp
, &bufp
, 16);
1813 if (tid
!= 0 && !in_thread_list (pid_to_ptid (tid
)))
1814 add_thread (pid_to_ptid (tid
));
1816 while (*bufp
++ == ','); /* comma-separated list */
1817 putpkt ("qsThreadInfo");
1819 getpkt (bufp
, (rs
->remote_packet_size
), 0);
1825 /* Else fall back to old method based on jmetzler protocol. */
1826 use_threadinfo_query
= 0;
1827 remote_find_new_threads ();
1832 * Collect a descriptive string about the given thread.
1833 * The target may say anything it wants to about the thread
1834 * (typically info about its blocked / runnable state, name, etc.).
1835 * This string will appear in the info threads display.
1837 * Optional: targets are not required to implement this function.
1841 remote_threads_extra_info (struct thread_info
*tp
)
1843 struct remote_state
*rs
= get_remote_state ();
1847 struct gdb_ext_thread_info threadinfo
;
1848 static char display_buf
[100]; /* arbitrary... */
1849 char *bufp
= alloca (rs
->remote_packet_size
);
1850 int n
= 0; /* position in display_buf */
1852 if (remote_desc
== 0) /* paranoia */
1853 internal_error (__FILE__
, __LINE__
,
1854 "remote_threads_extra_info");
1856 if (use_threadextra_query
)
1858 sprintf (bufp
, "qThreadExtraInfo,%x", PIDGET (tp
->ptid
));
1860 getpkt (bufp
, (rs
->remote_packet_size
), 0);
1863 n
= min (strlen (bufp
) / 2, sizeof (display_buf
));
1864 result
= hex2bin (bufp
, display_buf
, n
);
1865 display_buf
[result
] = '\0';
1870 /* If the above query fails, fall back to the old method. */
1871 use_threadextra_query
= 0;
1872 set
= TAG_THREADID
| TAG_EXISTS
| TAG_THREADNAME
1873 | TAG_MOREDISPLAY
| TAG_DISPLAY
;
1874 int_to_threadref (&id
, PIDGET (tp
->ptid
));
1875 if (remote_get_threadinfo (&id
, set
, &threadinfo
))
1876 if (threadinfo
.active
)
1878 if (*threadinfo
.shortname
)
1879 n
+= sprintf(&display_buf
[0], " Name: %s,", threadinfo
.shortname
);
1880 if (*threadinfo
.display
)
1881 n
+= sprintf(&display_buf
[n
], " State: %s,", threadinfo
.display
);
1882 if (*threadinfo
.more_display
)
1883 n
+= sprintf(&display_buf
[n
], " Priority: %s",
1884 threadinfo
.more_display
);
1888 /* for purely cosmetic reasons, clear up trailing commas */
1889 if (',' == display_buf
[n
-1])
1890 display_buf
[n
-1] = ' ';
1899 /* Restart the remote side; this is an extended protocol operation. */
1902 extended_remote_restart (void)
1904 struct remote_state
*rs
= get_remote_state ();
1905 char *buf
= alloca (rs
->remote_packet_size
);
1907 /* Send the restart command; for reasons I don't understand the
1908 remote side really expects a number after the "R". */
1910 sprintf (&buf
[1], "%x", 0);
1913 /* Now query for status so this looks just like we restarted
1914 gdbserver from scratch. */
1916 getpkt (buf
, (rs
->remote_packet_size
), 0);
1919 /* Clean up connection to a remote debugger. */
1922 remote_close (int quitting
)
1925 serial_close (remote_desc
);
1929 /* Query the remote side for the text, data and bss offsets. */
1934 struct remote_state
*rs
= get_remote_state ();
1935 char *buf
= alloca (rs
->remote_packet_size
);
1938 CORE_ADDR text_addr
, data_addr
, bss_addr
;
1939 struct section_offsets
*offs
;
1941 putpkt ("qOffsets");
1943 getpkt (buf
, (rs
->remote_packet_size
), 0);
1945 if (buf
[0] == '\000')
1946 return; /* Return silently. Stub doesn't support
1950 warning ("Remote failure reply: %s", buf
);
1954 /* Pick up each field in turn. This used to be done with scanf, but
1955 scanf will make trouble if CORE_ADDR size doesn't match
1956 conversion directives correctly. The following code will work
1957 with any size of CORE_ADDR. */
1958 text_addr
= data_addr
= bss_addr
= 0;
1962 if (strncmp (ptr
, "Text=", 5) == 0)
1965 /* Don't use strtol, could lose on big values. */
1966 while (*ptr
&& *ptr
!= ';')
1967 text_addr
= (text_addr
<< 4) + fromhex (*ptr
++);
1972 if (!lose
&& strncmp (ptr
, ";Data=", 6) == 0)
1975 while (*ptr
&& *ptr
!= ';')
1976 data_addr
= (data_addr
<< 4) + fromhex (*ptr
++);
1981 if (!lose
&& strncmp (ptr
, ";Bss=", 5) == 0)
1984 while (*ptr
&& *ptr
!= ';')
1985 bss_addr
= (bss_addr
<< 4) + fromhex (*ptr
++);
1991 error ("Malformed response to offset query, %s", buf
);
1993 if (symfile_objfile
== NULL
)
1996 offs
= ((struct section_offsets
*)
1997 alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
)));
1998 memcpy (offs
, symfile_objfile
->section_offsets
,
1999 SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
));
2001 offs
->offsets
[SECT_OFF_TEXT (symfile_objfile
)] = text_addr
;
2003 /* This is a temporary kludge to force data and bss to use the same offsets
2004 because that's what nlmconv does now. The real solution requires changes
2005 to the stub and remote.c that I don't have time to do right now. */
2007 offs
->offsets
[SECT_OFF_DATA (symfile_objfile
)] = data_addr
;
2008 offs
->offsets
[SECT_OFF_BSS (symfile_objfile
)] = data_addr
;
2010 objfile_relocate (symfile_objfile
, offs
);
2014 * Cisco version of section offsets:
2016 * Instead of having GDB query the target for the section offsets,
2017 * Cisco lets the target volunteer the information! It's also in
2018 * a different format, so here are the functions that will decode
2019 * a section offset packet from a Cisco target.
2023 * Function: remote_cisco_section_offsets
2025 * Returns: zero for success, non-zero for failure
2029 remote_cisco_section_offsets (bfd_vma text_addr
,
2032 bfd_signed_vma
*text_offs
,
2033 bfd_signed_vma
*data_offs
,
2034 bfd_signed_vma
*bss_offs
)
2036 bfd_vma text_base
, data_base
, bss_base
;
2037 struct minimal_symbol
*start
;
2042 if (symfile_objfile
== NULL
)
2043 return -1; /* no can do nothin' */
2045 start
= lookup_minimal_symbol ("_start", NULL
, NULL
);
2047 return -1; /* Can't find "_start" symbol */
2049 data_base
= bss_base
= 0;
2050 text_base
= SYMBOL_VALUE_ADDRESS (start
);
2052 abfd
= symfile_objfile
->obfd
;
2053 for (sect
= abfd
->sections
;
2057 const char *p
= bfd_get_section_name (abfd
, sect
);
2059 if (strcmp (p
+ len
- 4, "data") == 0) /* ends in "data" */
2060 if (data_base
== 0 ||
2061 data_base
> bfd_get_section_vma (abfd
, sect
))
2062 data_base
= bfd_get_section_vma (abfd
, sect
);
2063 if (strcmp (p
+ len
- 3, "bss") == 0) /* ends in "bss" */
2064 if (bss_base
== 0 ||
2065 bss_base
> bfd_get_section_vma (abfd
, sect
))
2066 bss_base
= bfd_get_section_vma (abfd
, sect
);
2068 *text_offs
= text_addr
- text_base
;
2069 *data_offs
= data_addr
- data_base
;
2070 *bss_offs
= bss_addr
- bss_base
;
2075 sprintf (tmp
, "VMA: text = 0x");
2076 sprintf_vma (tmp
+ strlen (tmp
), text_addr
);
2077 sprintf (tmp
+ strlen (tmp
), " data = 0x");
2078 sprintf_vma (tmp
+ strlen (tmp
), data_addr
);
2079 sprintf (tmp
+ strlen (tmp
), " bss = 0x");
2080 sprintf_vma (tmp
+ strlen (tmp
), bss_addr
);
2081 fputs_filtered (tmp
, gdb_stdlog
);
2082 fprintf_filtered (gdb_stdlog
,
2083 "Reloc offset: text = 0x%s data = 0x%s bss = 0x%s\n",
2084 paddr_nz (*text_offs
),
2085 paddr_nz (*data_offs
),
2086 paddr_nz (*bss_offs
));
2093 * Function: remote_cisco_objfile_relocate
2095 * Relocate the symbol file for a remote target.
2099 remote_cisco_objfile_relocate (bfd_signed_vma text_off
, bfd_signed_vma data_off
,
2100 bfd_signed_vma bss_off
)
2102 struct section_offsets
*offs
;
2104 if (text_off
!= 0 || data_off
!= 0 || bss_off
!= 0)
2106 /* FIXME: This code assumes gdb-stabs.h is being used; it's
2107 broken for xcoff, dwarf, sdb-coff, etc. But there is no
2108 simple canonical representation for this stuff. */
2110 offs
= (struct section_offsets
*)
2111 alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
));
2112 memcpy (offs
, symfile_objfile
->section_offsets
,
2113 SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
));
2115 offs
->offsets
[SECT_OFF_TEXT (symfile_objfile
)] = text_off
;
2116 offs
->offsets
[SECT_OFF_DATA (symfile_objfile
)] = data_off
;
2117 offs
->offsets
[SECT_OFF_BSS (symfile_objfile
)] = bss_off
;
2119 /* First call the standard objfile_relocate. */
2120 objfile_relocate (symfile_objfile
, offs
);
2122 /* Now we need to fix up the section entries already attached to
2123 the exec target. These entries will control memory transfers
2124 from the exec file. */
2126 exec_set_section_offsets (text_off
, data_off
, bss_off
);
2130 /* Stub for catch_errors. */
2133 remote_start_remote_dummy (struct ui_out
*uiout
, void *dummy
)
2135 start_remote (); /* Initialize gdb process mechanisms */
2136 /* NOTE: Return something >=0. A -ve value is reserved for
2137 catch_exceptions. */
2142 remote_start_remote (struct ui_out
*uiout
, void *dummy
)
2144 immediate_quit
++; /* Allow user to interrupt it */
2146 /* Ack any packet which the remote side has already sent. */
2147 serial_write (remote_desc
, "+", 1);
2149 /* Let the stub know that we want it to return the thread. */
2152 inferior_ptid
= remote_current_thread (inferior_ptid
);
2154 get_offsets (); /* Get text, data & bss offsets */
2156 putpkt ("?"); /* initiate a query from remote machine */
2159 /* NOTE: See comment above in remote_start_remote_dummy(). This
2160 function returns something >=0. */
2161 return remote_start_remote_dummy (uiout
, dummy
);
2164 /* Open a connection to a remote debugger.
2165 NAME is the filename used for communication. */
2168 remote_open (char *name
, int from_tty
)
2170 remote_open_1 (name
, from_tty
, &remote_ops
, 0, 0);
2173 /* Just like remote_open, but with asynchronous support. */
2175 remote_async_open (char *name
, int from_tty
)
2177 remote_open_1 (name
, from_tty
, &remote_async_ops
, 0, 1);
2180 /* Open a connection to a remote debugger using the extended
2181 remote gdb protocol. NAME is the filename used for communication. */
2184 extended_remote_open (char *name
, int from_tty
)
2186 remote_open_1 (name
, from_tty
, &extended_remote_ops
, 1 /*extended_p */,
2190 /* Just like extended_remote_open, but with asynchronous support. */
2192 extended_remote_async_open (char *name
, int from_tty
)
2194 remote_open_1 (name
, from_tty
, &extended_async_remote_ops
,
2195 1 /*extended_p */, 1 /* async_p */);
2198 /* Generic code for opening a connection to a remote target. */
2201 init_all_packet_configs (void)
2204 update_packet_config (&remote_protocol_e
);
2205 update_packet_config (&remote_protocol_E
);
2206 update_packet_config (&remote_protocol_P
);
2207 update_packet_config (&remote_protocol_qSymbol
);
2208 update_packet_config (&remote_protocol_vcont
);
2209 for (i
= 0; i
< NR_Z_PACKET_TYPES
; i
++)
2210 update_packet_config (&remote_protocol_Z
[i
]);
2211 /* Force remote_write_bytes to check whether target supports binary
2213 update_packet_config (&remote_protocol_binary_download
);
2216 /* Symbol look-up. */
2219 remote_check_symbols (struct objfile
*objfile
)
2221 struct remote_state
*rs
= get_remote_state ();
2222 char *msg
, *reply
, *tmp
;
2223 struct minimal_symbol
*sym
;
2226 if (remote_protocol_qSymbol
.support
== PACKET_DISABLE
)
2229 msg
= alloca (rs
->remote_packet_size
);
2230 reply
= alloca (rs
->remote_packet_size
);
2232 /* Invite target to request symbol lookups. */
2234 putpkt ("qSymbol::");
2235 getpkt (reply
, (rs
->remote_packet_size
), 0);
2236 packet_ok (reply
, &remote_protocol_qSymbol
);
2238 while (strncmp (reply
, "qSymbol:", 8) == 0)
2241 end
= hex2bin (tmp
, msg
, strlen (tmp
) / 2);
2243 sym
= lookup_minimal_symbol (msg
, NULL
, NULL
);
2245 sprintf (msg
, "qSymbol::%s", &reply
[8]);
2247 sprintf (msg
, "qSymbol:%s:%s",
2248 paddr_nz (SYMBOL_VALUE_ADDRESS (sym
)),
2251 getpkt (reply
, (rs
->remote_packet_size
), 0);
2255 static struct serial
*
2256 remote_serial_open (char *name
)
2258 static int udp_warning
= 0;
2260 /* FIXME: Parsing NAME here is a hack. But we want to warn here instead
2261 of in ser-tcp.c, because it is the remote protocol assuming that the
2262 serial connection is reliable and not the serial connection promising
2264 if (!udp_warning
&& strncmp (name
, "udp:", 4) == 0)
2266 warning ("The remote protocol may be unreliable over UDP.");
2267 warning ("Some events may be lost, rendering further debugging "
2272 return serial_open (name
);
2276 remote_open_1 (char *name
, int from_tty
, struct target_ops
*target
,
2277 int extended_p
, int async_p
)
2280 struct remote_state
*rs
= get_remote_state ();
2282 error ("To open a remote debug connection, you need to specify what\n"
2283 "serial device is attached to the remote system\n"
2284 "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).");
2286 /* See FIXME above */
2288 wait_forever_enabled_p
= 1;
2290 target_preopen (from_tty
);
2292 unpush_target (target
);
2294 remote_desc
= remote_serial_open (name
);
2296 perror_with_name (name
);
2298 if (baud_rate
!= -1)
2300 if (serial_setbaudrate (remote_desc
, baud_rate
))
2302 serial_close (remote_desc
);
2303 perror_with_name (name
);
2307 serial_raw (remote_desc
);
2309 /* If there is something sitting in the buffer we might take it as a
2310 response to a command, which would be bad. */
2311 serial_flush_input (remote_desc
);
2315 puts_filtered ("Remote debugging using ");
2316 puts_filtered (name
);
2317 puts_filtered ("\n");
2319 push_target (target
); /* Switch to using remote target now */
2321 init_all_packet_configs ();
2323 general_thread
= -2;
2324 continue_thread
= -2;
2326 /* Probe for ability to use "ThreadInfo" query, as required. */
2327 use_threadinfo_query
= 1;
2328 use_threadextra_query
= 1;
2330 /* Without this, some commands which require an active target (such
2331 as kill) won't work. This variable serves (at least) double duty
2332 as both the pid of the target process (if it has such), and as a
2333 flag indicating that a target is active. These functions should
2334 be split out into seperate variables, especially since GDB will
2335 someday have a notion of debugging several processes. */
2337 inferior_ptid
= pid_to_ptid (MAGIC_NULL_PID
);
2341 /* With this target we start out by owning the terminal. */
2342 remote_async_terminal_ours_p
= 1;
2344 /* FIXME: cagney/1999-09-23: During the initial connection it is
2345 assumed that the target is already ready and able to respond to
2346 requests. Unfortunately remote_start_remote() eventually calls
2347 wait_for_inferior() with no timeout. wait_forever_enabled_p gets
2348 around this. Eventually a mechanism that allows
2349 wait_for_inferior() to expect/get timeouts will be
2351 wait_forever_enabled_p
= 0;
2354 #ifdef SOLIB_CREATE_INFERIOR_HOOK
2355 /* First delete any symbols previously loaded from shared libraries. */
2356 no_shared_libraries (NULL
, 0);
2359 /* Start the remote connection. If error() or QUIT, discard this
2360 target (we'd otherwise be in an inconsistent state) and then
2361 propogate the error on up the exception chain. This ensures that
2362 the caller doesn't stumble along blindly assuming that the
2363 function succeeded. The CLI doesn't have this problem but other
2364 UI's, such as MI do.
2366 FIXME: cagney/2002-05-19: Instead of re-throwing the exception,
2367 this function should return an error indication letting the
2368 caller restore the previous state. Unfortunately the command
2369 ``target remote'' is directly wired to this function making that
2370 impossible. On a positive note, the CLI side of this problem has
2371 been fixed - the function set_cmd_context() makes it possible for
2372 all the ``target ....'' commands to share a common callback
2373 function. See cli-dump.c. */
2374 ex
= catch_exceptions (uiout
,
2375 remote_start_remote
, NULL
,
2376 "Couldn't establish connection to remote"
2383 wait_forever_enabled_p
= 1;
2384 throw_exception (ex
);
2388 wait_forever_enabled_p
= 1;
2392 /* Tell the remote that we are using the extended protocol. */
2393 char *buf
= alloca (rs
->remote_packet_size
);
2395 getpkt (buf
, (rs
->remote_packet_size
), 0);
2397 #ifdef SOLIB_CREATE_INFERIOR_HOOK
2398 /* FIXME: need a master target_open vector from which all
2399 remote_opens can be called, so that stuff like this can
2400 go there. Failing that, the following code must be copied
2401 to the open function for any remote target that wants to
2402 support svr4 shared libraries. */
2404 /* Set up to detect and load shared libraries. */
2405 if (exec_bfd
) /* No use without an exec file. */
2407 SOLIB_CREATE_INFERIOR_HOOK (PIDGET (inferior_ptid
));
2408 remote_check_symbols (symfile_objfile
);
2413 /* This takes a program previously attached to and detaches it. After
2414 this is done, GDB can be used to debug some other program. We
2415 better not have left any breakpoints in the target program or it'll
2416 die when it hits one. */
2419 remote_detach (char *args
, int from_tty
)
2421 struct remote_state
*rs
= get_remote_state ();
2422 char *buf
= alloca (rs
->remote_packet_size
);
2425 error ("Argument given to \"detach\" when remotely debugging.");
2427 /* Tell the remote target to detach. */
2429 remote_send (buf
, (rs
->remote_packet_size
));
2431 /* Unregister the file descriptor from the event loop. */
2432 if (target_is_async_p ())
2433 serial_async (remote_desc
, NULL
, 0);
2435 target_mourn_inferior ();
2437 puts_filtered ("Ending remote debugging.\n");
2440 /* Same as remote_detach, but don't send the "D" packet; just disconnect. */
2443 remote_disconnect (char *args
, int from_tty
)
2445 struct remote_state
*rs
= get_remote_state ();
2446 char *buf
= alloca (rs
->remote_packet_size
);
2449 error ("Argument given to \"detach\" when remotely debugging.");
2451 /* Unregister the file descriptor from the event loop. */
2452 if (target_is_async_p ())
2453 serial_async (remote_desc
, NULL
, 0);
2455 target_mourn_inferior ();
2457 puts_filtered ("Ending remote debugging.\n");
2460 /* Convert hex digit A to a number. */
2465 if (a
>= '0' && a
<= '9')
2467 else if (a
>= 'a' && a
<= 'f')
2468 return a
- 'a' + 10;
2469 else if (a
>= 'A' && a
<= 'F')
2470 return a
- 'A' + 10;
2472 error ("Reply contains invalid hex digit %d", a
);
2476 hex2bin (const char *hex
, char *bin
, int count
)
2480 for (i
= 0; i
< count
; i
++)
2482 if (hex
[0] == 0 || hex
[1] == 0)
2484 /* Hex string is short, or of uneven length.
2485 Return the count that has been converted so far. */
2488 *bin
++ = fromhex (hex
[0]) * 16 + fromhex (hex
[1]);
2494 /* Convert number NIB to a hex digit. */
2502 return 'a' + nib
- 10;
2506 bin2hex (const char *bin
, char *hex
, int count
)
2509 /* May use a length, or a nul-terminated string as input. */
2511 count
= strlen (bin
);
2513 for (i
= 0; i
< count
; i
++)
2515 *hex
++ = tohex ((*bin
>> 4) & 0xf);
2516 *hex
++ = tohex (*bin
++ & 0xf);
2522 /* Check for the availability of vCont. This function should also check
2526 remote_vcont_probe (struct remote_state
*rs
, char *buf
)
2528 strcpy (buf
, "vCont?");
2530 getpkt (buf
, rs
->remote_packet_size
, 0);
2532 /* Make sure that the features we assume are supported. */
2533 if (strncmp (buf
, "vCont", 5) == 0)
2536 int support_s
, support_S
, support_c
, support_C
;
2542 while (p
&& *p
== ';')
2545 if (*p
== 's' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
2547 else if (*p
== 'S' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
2549 else if (*p
== 'c' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
2551 else if (*p
== 'C' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
2554 p
= strchr (p
, ';');
2557 /* If s, S, c, and C are not all supported, we can't use vCont. Clearing
2558 BUF will make packet_ok disable the packet. */
2559 if (!support_s
|| !support_S
|| !support_c
|| !support_C
)
2563 packet_ok (buf
, &remote_protocol_vcont
);
2566 /* Resume the remote inferior by using a "vCont" packet. The thread
2567 to be resumed is PTID; STEP and SIGGNAL indicate whether the
2568 resumed thread should be single-stepped and/or signalled. If PTID's
2569 PID is -1, then all threads are resumed; the thread to be stepped and/or
2570 signalled is given in the global INFERIOR_PTID. This function returns
2571 non-zero iff it resumes the inferior.
2573 This function issues a strict subset of all possible vCont commands at the
2577 remote_vcont_resume (ptid_t ptid
, int step
, enum target_signal siggnal
)
2579 struct remote_state
*rs
= get_remote_state ();
2580 int pid
= PIDGET (ptid
);
2582 struct cleanup
*old_cleanup
;
2584 buf
= xmalloc (rs
->remote_packet_size
);
2585 old_cleanup
= make_cleanup (xfree
, buf
);
2587 if (remote_protocol_vcont
.support
== PACKET_SUPPORT_UNKNOWN
)
2588 remote_vcont_probe (rs
, buf
);
2590 if (remote_protocol_vcont
.support
== PACKET_DISABLE
)
2592 do_cleanups (old_cleanup
);
2596 /* If we could generate a wider range of packets, we'd have to worry
2597 about overflowing BUF. Should there be a generic
2598 "multi-part-packet" packet? */
2600 if (PIDGET (inferior_ptid
) == MAGIC_NULL_PID
)
2602 /* MAGIC_NULL_PTID means that we don't have any active threads, so we
2603 don't have any PID numbers the inferior will understand. Make sure
2604 to only send forms that do not specify a PID. */
2605 if (step
&& siggnal
!= TARGET_SIGNAL_0
)
2606 sprintf (buf
, "vCont;S%02x", siggnal
);
2608 sprintf (buf
, "vCont;s");
2609 else if (siggnal
!= TARGET_SIGNAL_0
)
2610 sprintf (buf
, "vCont;C%02x", siggnal
);
2612 sprintf (buf
, "vCont;c");
2616 /* Resume all threads, with preference for INFERIOR_PTID. */
2617 if (step
&& siggnal
!= TARGET_SIGNAL_0
)
2618 sprintf (buf
, "vCont;S%02x:%x;c", siggnal
, PIDGET (inferior_ptid
));
2620 sprintf (buf
, "vCont;s:%x;c", PIDGET (inferior_ptid
));
2621 else if (siggnal
!= TARGET_SIGNAL_0
)
2622 sprintf (buf
, "vCont;C%02x:%x;c", siggnal
, PIDGET (inferior_ptid
));
2624 sprintf (buf
, "vCont;c");
2628 /* Scheduler locking; resume only PTID. */
2629 if (step
&& siggnal
!= TARGET_SIGNAL_0
)
2630 sprintf (buf
, "vCont;S%02x:%x", siggnal
, pid
);
2632 sprintf (buf
, "vCont;s:%x", pid
);
2633 else if (siggnal
!= TARGET_SIGNAL_0
)
2634 sprintf (buf
, "vCont;C%02x:%x", siggnal
, pid
);
2636 sprintf (buf
, "vCont;c:%x", pid
);
2641 do_cleanups (old_cleanup
);
2646 /* Tell the remote machine to resume. */
2648 static enum target_signal last_sent_signal
= TARGET_SIGNAL_0
;
2650 static int last_sent_step
;
2653 remote_resume (ptid_t ptid
, int step
, enum target_signal siggnal
)
2655 struct remote_state
*rs
= get_remote_state ();
2656 char *buf
= alloca (rs
->remote_packet_size
);
2657 int pid
= PIDGET (ptid
);
2660 last_sent_signal
= siggnal
;
2661 last_sent_step
= step
;
2663 /* A hook for when we need to do something at the last moment before
2665 if (target_resume_hook
)
2666 (*target_resume_hook
) ();
2668 /* The vCont packet doesn't need to specify threads via Hc. */
2669 if (remote_vcont_resume (ptid
, step
, siggnal
))
2672 /* All other supported resume packets do use Hc, so call set_thread. */
2674 set_thread (0, 0); /* run any thread */
2676 set_thread (pid
, 0); /* run this thread */
2678 /* The s/S/c/C packets do not return status. So if the target does
2679 not support the S or C packets, the debug agent returns an empty
2680 string which is detected in remote_wait(). This protocol defect
2681 is fixed in the e/E packets. */
2683 if (step
&& step_range_end
)
2685 /* If the target does not support the 'E' packet, we try the 'S'
2686 packet. Ideally we would fall back to the 'e' packet if that
2687 too is not supported. But that would require another copy of
2688 the code to issue the 'e' packet (and fall back to 's' if not
2689 supported) in remote_wait(). */
2691 if (siggnal
!= TARGET_SIGNAL_0
)
2693 if (remote_protocol_E
.support
!= PACKET_DISABLE
)
2697 *p
++ = tohex (((int) siggnal
>> 4) & 0xf);
2698 *p
++ = tohex (((int) siggnal
) & 0xf);
2700 p
+= hexnumstr (p
, (ULONGEST
) step_range_start
);
2702 p
+= hexnumstr (p
, (ULONGEST
) step_range_end
);
2706 getpkt (buf
, (rs
->remote_packet_size
), 0);
2708 if (packet_ok (buf
, &remote_protocol_E
) == PACKET_OK
)
2714 if (remote_protocol_e
.support
!= PACKET_DISABLE
)
2718 p
+= hexnumstr (p
, (ULONGEST
) step_range_start
);
2720 p
+= hexnumstr (p
, (ULONGEST
) step_range_end
);
2724 getpkt (buf
, (rs
->remote_packet_size
), 0);
2726 if (packet_ok (buf
, &remote_protocol_e
) == PACKET_OK
)
2732 if (siggnal
!= TARGET_SIGNAL_0
)
2734 buf
[0] = step
? 'S' : 'C';
2735 buf
[1] = tohex (((int) siggnal
>> 4) & 0xf);
2736 buf
[2] = tohex (((int) siggnal
) & 0xf);
2740 strcpy (buf
, step
? "s" : "c");
2745 /* Same as remote_resume, but with async support. */
2747 remote_async_resume (ptid_t ptid
, int step
, enum target_signal siggnal
)
2749 remote_resume (ptid
, step
, siggnal
);
2751 /* We are about to start executing the inferior, let's register it
2752 with the event loop. NOTE: this is the one place where all the
2753 execution commands end up. We could alternatively do this in each
2754 of the execution commands in infcmd.c.*/
2755 /* FIXME: ezannoni 1999-09-28: We may need to move this out of here
2756 into infcmd.c in order to allow inferior function calls to work
2757 NOT asynchronously. */
2758 if (event_loop_p
&& target_can_async_p ())
2759 target_async (inferior_event_handler
, 0);
2760 /* Tell the world that the target is now executing. */
2761 /* FIXME: cagney/1999-09-23: Is it the targets responsibility to set
2762 this? Instead, should the client of target just assume (for
2763 async targets) that the target is going to start executing? Is
2764 this information already found in the continuation block? */
2765 if (target_is_async_p ())
2766 target_executing
= 1;
2770 /* Set up the signal handler for SIGINT, while the target is
2771 executing, ovewriting the 'regular' SIGINT signal handler. */
2773 initialize_sigint_signal_handler (void)
2775 sigint_remote_token
=
2776 create_async_signal_handler (async_remote_interrupt
, NULL
);
2777 signal (SIGINT
, handle_remote_sigint
);
2780 /* Signal handler for SIGINT, while the target is executing. */
2782 handle_remote_sigint (int sig
)
2784 signal (sig
, handle_remote_sigint_twice
);
2785 sigint_remote_twice_token
=
2786 create_async_signal_handler (async_remote_interrupt_twice
, NULL
);
2787 mark_async_signal_handler_wrapper (sigint_remote_token
);
2790 /* Signal handler for SIGINT, installed after SIGINT has already been
2791 sent once. It will take effect the second time that the user sends
2794 handle_remote_sigint_twice (int sig
)
2796 signal (sig
, handle_sigint
);
2797 sigint_remote_twice_token
=
2798 create_async_signal_handler (inferior_event_handler_wrapper
, NULL
);
2799 mark_async_signal_handler_wrapper (sigint_remote_twice_token
);
2802 /* Perform the real interruption of the target execution, in response
2805 async_remote_interrupt (gdb_client_data arg
)
2808 fprintf_unfiltered (gdb_stdlog
, "remote_interrupt called\n");
2813 /* Perform interrupt, if the first attempt did not succeed. Just give
2814 up on the target alltogether. */
2816 async_remote_interrupt_twice (gdb_client_data arg
)
2819 fprintf_unfiltered (gdb_stdlog
, "remote_interrupt_twice called\n");
2820 /* Do something only if the target was not killed by the previous
2822 if (target_executing
)
2825 signal (SIGINT
, handle_remote_sigint
);
2829 /* Reinstall the usual SIGINT handlers, after the target has
2832 cleanup_sigint_signal_handler (void *dummy
)
2834 signal (SIGINT
, handle_sigint
);
2835 if (sigint_remote_twice_token
)
2836 delete_async_signal_handler ((struct async_signal_handler
**) & sigint_remote_twice_token
);
2837 if (sigint_remote_token
)
2838 delete_async_signal_handler ((struct async_signal_handler
**) & sigint_remote_token
);
2841 /* Send ^C to target to halt it. Target will respond, and send us a
2843 static void (*ofunc
) (int);
2845 /* The command line interface's stop routine. This function is installed
2846 as a signal handler for SIGINT. The first time a user requests a
2847 stop, we call remote_stop to send a break or ^C. If there is no
2848 response from the target (it didn't stop when the user requested it),
2849 we ask the user if he'd like to detach from the target. */
2851 remote_interrupt (int signo
)
2853 /* If this doesn't work, try more severe steps. */
2854 signal (signo
, remote_interrupt_twice
);
2857 fprintf_unfiltered (gdb_stdlog
, "remote_interrupt called\n");
2862 /* The user typed ^C twice. */
2865 remote_interrupt_twice (int signo
)
2867 signal (signo
, ofunc
);
2869 signal (signo
, remote_interrupt
);
2872 /* This is the generic stop called via the target vector. When a target
2873 interrupt is requested, either by the command line or the GUI, we
2874 will eventually end up here. */
2878 /* Send a break or a ^C, depending on user preference. */
2880 fprintf_unfiltered (gdb_stdlog
, "remote_stop called\n");
2883 serial_send_break (remote_desc
);
2885 serial_write (remote_desc
, "\003", 1);
2888 /* Ask the user what to do when an interrupt is received. */
2891 interrupt_query (void)
2893 target_terminal_ours ();
2895 if (query ("Interrupted while waiting for the program.\n\
2896 Give up (and stop debugging it)? "))
2898 target_mourn_inferior ();
2899 throw_exception (RETURN_QUIT
);
2902 target_terminal_inferior ();
2905 /* Enable/disable target terminal ownership. Most targets can use
2906 terminal groups to control terminal ownership. Remote targets are
2907 different in that explicit transfer of ownership to/from GDB/target
2911 remote_async_terminal_inferior (void)
2913 /* FIXME: cagney/1999-09-27: Shouldn't need to test for
2914 sync_execution here. This function should only be called when
2915 GDB is resuming the inferior in the forground. A background
2916 resume (``run&'') should leave GDB in control of the terminal and
2917 consequently should not call this code. */
2918 if (!sync_execution
)
2920 /* FIXME: cagney/1999-09-27: Closely related to the above. Make
2921 calls target_terminal_*() idenpotent. The event-loop GDB talking
2922 to an asynchronous target with a synchronous command calls this
2923 function from both event-top.c and infrun.c/infcmd.c. Once GDB
2924 stops trying to transfer the terminal to the target when it
2925 shouldn't this guard can go away. */
2926 if (!remote_async_terminal_ours_p
)
2928 delete_file_handler (input_fd
);
2929 remote_async_terminal_ours_p
= 0;
2930 initialize_sigint_signal_handler ();
2931 /* NOTE: At this point we could also register our selves as the
2932 recipient of all input. Any characters typed could then be
2933 passed on down to the target. */
2937 remote_async_terminal_ours (void)
2939 /* See FIXME in remote_async_terminal_inferior. */
2940 if (!sync_execution
)
2942 /* See FIXME in remote_async_terminal_inferior. */
2943 if (remote_async_terminal_ours_p
)
2945 cleanup_sigint_signal_handler (NULL
);
2946 add_file_handler (input_fd
, stdin_event_handler
, 0);
2947 remote_async_terminal_ours_p
= 1;
2950 /* If nonzero, ignore the next kill. */
2955 remote_console_output (char *msg
)
2959 for (p
= msg
; p
[0] && p
[1]; p
+= 2)
2962 char c
= fromhex (p
[0]) * 16 + fromhex (p
[1]);
2965 fputs_unfiltered (tb
, gdb_stdtarg
);
2967 gdb_flush (gdb_stdtarg
);
2970 /* Wait until the remote machine stops, then return,
2971 storing status in STATUS just as `wait' would.
2972 Returns "pid", which in the case of a multi-threaded
2973 remote OS, is the thread-id. */
2976 remote_wait (ptid_t ptid
, struct target_waitstatus
*status
)
2978 struct remote_state
*rs
= get_remote_state ();
2979 unsigned char *buf
= alloca (rs
->remote_packet_size
);
2980 ULONGEST thread_num
= -1;
2983 status
->kind
= TARGET_WAITKIND_EXITED
;
2984 status
->value
.integer
= 0;
2990 ofunc
= signal (SIGINT
, remote_interrupt
);
2991 getpkt (buf
, (rs
->remote_packet_size
), 1);
2992 signal (SIGINT
, ofunc
);
2994 /* This is a hook for when we need to do something (perhaps the
2995 collection of trace data) every time the target stops. */
2996 if (target_wait_loop_hook
)
2997 (*target_wait_loop_hook
) ();
2999 remote_stopped_by_watchpoint_p
= 0;
3003 case 'E': /* Error of some sort */
3004 warning ("Remote failure reply: %s", buf
);
3006 case 'F': /* File-I/O request */
3007 remote_fileio_request (buf
);
3009 case 'T': /* Status with PC, SP, FP, ... */
3012 char regs
[MAX_REGISTER_SIZE
];
3014 /* Expedited reply, containing Signal, {regno, reg} repeat */
3015 /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where
3017 n... = register number
3018 r... = register contents
3020 p
= &buf
[3]; /* after Txx */
3029 /* If the packet contains a register number save it in pnum
3030 and set p1 to point to the character following it.
3031 Otherwise p1 points to p. */
3033 /* If this packet is an awatch packet, don't parse the 'a'
3034 as a register number. */
3036 if (strncmp (p
, "awatch", strlen("awatch")) != 0)
3038 /* Read the ``P'' register number. */
3039 pnum
= strtol (p
, &p_temp
, 16);
3040 p1
= (unsigned char *) p_temp
;
3045 if (p1
== p
) /* No register number present here */
3047 p1
= (unsigned char *) strchr (p
, ':');
3049 warning ("Malformed packet(a) (missing colon): %s\n\
3052 if (strncmp (p
, "thread", p1
- p
) == 0)
3054 p_temp
= unpack_varlen_hex (++p1
, &thread_num
);
3055 record_currthread (thread_num
);
3056 p
= (unsigned char *) p_temp
;
3058 else if ((strncmp (p
, "watch", p1
- p
) == 0)
3059 || (strncmp (p
, "rwatch", p1
- p
) == 0)
3060 || (strncmp (p
, "awatch", p1
- p
) == 0))
3062 remote_stopped_by_watchpoint_p
= 1;
3063 p
= unpack_varlen_hex (++p1
, &addr
);
3064 remote_watch_data_address
= (CORE_ADDR
)addr
;
3068 /* Silently skip unknown optional info. */
3069 p_temp
= strchr (p1
+ 1, ';');
3071 p
= (unsigned char *) p_temp
;
3076 struct packet_reg
*reg
= packet_reg_from_pnum (rs
, pnum
);
3080 error ("Malformed packet(b) (missing colon): %s\nPacket: '%s'\n",
3084 error ("Remote sent bad register number %s: %s\nPacket: '%s'\n",
3085 phex_nz (pnum
, 0), p
, buf
);
3087 fieldsize
= hex2bin (p
, regs
, DEPRECATED_REGISTER_RAW_SIZE (reg
->regnum
));
3089 if (fieldsize
< DEPRECATED_REGISTER_RAW_SIZE (reg
->regnum
))
3090 warning ("Remote reply is too short: %s", buf
);
3091 supply_register (reg
->regnum
, regs
);
3095 error ("Remote register badly formatted: %s\nhere: %s", buf
, p
);
3099 case 'S': /* Old style status, just signal only */
3100 status
->kind
= TARGET_WAITKIND_STOPPED
;
3101 status
->value
.sig
= (enum target_signal
)
3102 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
3106 /* Export Cisco kernel mode as a convenience variable
3107 (so that it can be used in the GDB prompt if desired). */
3109 if (cisco_kernel_mode
== 1)
3110 set_internalvar (lookup_internalvar ("cisco_kernel_mode"),
3111 value_from_string ("PDEBUG-"));
3112 cisco_kernel_mode
= 0;
3113 thread_num
= strtol ((const char *) &buf
[4], NULL
, 16);
3114 record_currthread (thread_num
);
3116 else if (buf
[3] == 'k')
3118 /* Export Cisco kernel mode as a convenience variable
3119 (so that it can be used in the GDB prompt if desired). */
3121 if (cisco_kernel_mode
== 1)
3122 set_internalvar (lookup_internalvar ("cisco_kernel_mode"),
3123 value_from_string ("KDEBUG-"));
3124 cisco_kernel_mode
= 1;
3127 case 'N': /* Cisco special: status and offsets */
3129 bfd_vma text_addr
, data_addr
, bss_addr
;
3130 bfd_signed_vma text_off
, data_off
, bss_off
;
3133 status
->kind
= TARGET_WAITKIND_STOPPED
;
3134 status
->value
.sig
= (enum target_signal
)
3135 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
3137 if (symfile_objfile
== NULL
)
3139 warning ("Relocation packet received with no symbol file. \
3144 /* Relocate object file. Buffer format is NAATT;DD;BB
3145 * where AA is the signal number, TT is the new text
3146 * address, DD * is the new data address, and BB is the
3147 * new bss address. */
3150 text_addr
= strtoul (p
, (char **) &p1
, 16);
3151 if (p1
== p
|| *p1
!= ';')
3152 warning ("Malformed relocation packet: Packet '%s'", buf
);
3154 data_addr
= strtoul (p
, (char **) &p1
, 16);
3155 if (p1
== p
|| *p1
!= ';')
3156 warning ("Malformed relocation packet: Packet '%s'", buf
);
3158 bss_addr
= strtoul (p
, (char **) &p1
, 16);
3160 warning ("Malformed relocation packet: Packet '%s'", buf
);
3162 if (remote_cisco_section_offsets (text_addr
, data_addr
, bss_addr
,
3163 &text_off
, &data_off
, &bss_off
)
3165 if (text_off
!= 0 || data_off
!= 0 || bss_off
!= 0)
3166 remote_cisco_objfile_relocate (text_off
, data_off
, bss_off
);
3170 case 'W': /* Target exited */
3172 /* The remote process exited. */
3173 status
->kind
= TARGET_WAITKIND_EXITED
;
3174 status
->value
.integer
= (fromhex (buf
[1]) << 4) + fromhex (buf
[2]);
3178 status
->kind
= TARGET_WAITKIND_SIGNALLED
;
3179 status
->value
.sig
= (enum target_signal
)
3180 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
3184 case 'O': /* Console output */
3185 remote_console_output (buf
+ 1);
3188 if (last_sent_signal
!= TARGET_SIGNAL_0
)
3190 /* Zero length reply means that we tried 'S' or 'C' and
3191 the remote system doesn't support it. */
3192 target_terminal_ours_for_output ();
3194 ("Can't send signals to this remote system. %s not sent.\n",
3195 target_signal_to_name (last_sent_signal
));
3196 last_sent_signal
= TARGET_SIGNAL_0
;
3197 target_terminal_inferior ();
3199 strcpy ((char *) buf
, last_sent_step
? "s" : "c");
3200 putpkt ((char *) buf
);
3203 /* else fallthrough */
3205 warning ("Invalid remote reply: %s", buf
);
3210 if (thread_num
!= -1)
3212 return pid_to_ptid (thread_num
);
3214 return inferior_ptid
;
3217 /* Async version of remote_wait. */
3219 remote_async_wait (ptid_t ptid
, struct target_waitstatus
*status
)
3221 struct remote_state
*rs
= get_remote_state ();
3222 unsigned char *buf
= alloca (rs
->remote_packet_size
);
3223 ULONGEST thread_num
= -1;
3226 status
->kind
= TARGET_WAITKIND_EXITED
;
3227 status
->value
.integer
= 0;
3229 remote_stopped_by_watchpoint_p
= 0;
3235 if (!target_is_async_p ())
3236 ofunc
= signal (SIGINT
, remote_interrupt
);
3237 /* FIXME: cagney/1999-09-27: If we're in async mode we should
3238 _never_ wait for ever -> test on target_is_async_p().
3239 However, before we do that we need to ensure that the caller
3240 knows how to take the target into/out of async mode. */
3241 getpkt (buf
, (rs
->remote_packet_size
), wait_forever_enabled_p
);
3242 if (!target_is_async_p ())
3243 signal (SIGINT
, ofunc
);
3245 /* This is a hook for when we need to do something (perhaps the
3246 collection of trace data) every time the target stops. */
3247 if (target_wait_loop_hook
)
3248 (*target_wait_loop_hook
) ();
3252 case 'E': /* Error of some sort */
3253 warning ("Remote failure reply: %s", buf
);
3255 case 'F': /* File-I/O request */
3256 remote_fileio_request (buf
);
3258 case 'T': /* Status with PC, SP, FP, ... */
3261 char regs
[MAX_REGISTER_SIZE
];
3263 /* Expedited reply, containing Signal, {regno, reg} repeat */
3264 /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where
3266 n... = register number
3267 r... = register contents
3269 p
= &buf
[3]; /* after Txx */
3278 /* If the packet contains a register number, save it in pnum
3279 and set p1 to point to the character following it.
3280 Otherwise p1 points to p. */
3282 /* If this packet is an awatch packet, don't parse the 'a'
3283 as a register number. */
3285 if (!strncmp (p
, "awatch", strlen ("awatch")) != 0)
3287 /* Read the register number. */
3288 pnum
= strtol (p
, &p_temp
, 16);
3289 p1
= (unsigned char *) p_temp
;
3294 if (p1
== p
) /* No register number present here */
3296 p1
= (unsigned char *) strchr (p
, ':');
3298 error ("Malformed packet(a) (missing colon): %s\nPacket: '%s'\n",
3300 if (strncmp (p
, "thread", p1
- p
) == 0)
3302 p_temp
= unpack_varlen_hex (++p1
, &thread_num
);
3303 record_currthread (thread_num
);
3304 p
= (unsigned char *) p_temp
;
3306 else if ((strncmp (p
, "watch", p1
- p
) == 0)
3307 || (strncmp (p
, "rwatch", p1
- p
) == 0)
3308 || (strncmp (p
, "awatch", p1
- p
) == 0))
3310 remote_stopped_by_watchpoint_p
= 1;
3311 p
= unpack_varlen_hex (++p1
, &addr
);
3312 remote_watch_data_address
= (CORE_ADDR
)addr
;
3316 /* Silently skip unknown optional info. */
3317 p_temp
= (unsigned char *) strchr (p1
+ 1, ';');
3325 struct packet_reg
*reg
= packet_reg_from_pnum (rs
, pnum
);
3328 error ("Malformed packet(b) (missing colon): %s\nPacket: '%s'\n",
3332 error ("Remote sent bad register number %ld: %s\nPacket: '%s'\n",
3335 fieldsize
= hex2bin (p
, regs
, DEPRECATED_REGISTER_RAW_SIZE (reg
->regnum
));
3337 if (fieldsize
< DEPRECATED_REGISTER_RAW_SIZE (reg
->regnum
))
3338 warning ("Remote reply is too short: %s", buf
);
3339 supply_register (reg
->regnum
, regs
);
3343 error ("Remote register badly formatted: %s\nhere: %s",
3348 case 'S': /* Old style status, just signal only */
3349 status
->kind
= TARGET_WAITKIND_STOPPED
;
3350 status
->value
.sig
= (enum target_signal
)
3351 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
3355 /* Export Cisco kernel mode as a convenience variable
3356 (so that it can be used in the GDB prompt if desired). */
3358 if (cisco_kernel_mode
== 1)
3359 set_internalvar (lookup_internalvar ("cisco_kernel_mode"),
3360 value_from_string ("PDEBUG-"));
3361 cisco_kernel_mode
= 0;
3362 thread_num
= strtol ((const char *) &buf
[4], NULL
, 16);
3363 record_currthread (thread_num
);
3365 else if (buf
[3] == 'k')
3367 /* Export Cisco kernel mode as a convenience variable
3368 (so that it can be used in the GDB prompt if desired). */
3370 if (cisco_kernel_mode
== 1)
3371 set_internalvar (lookup_internalvar ("cisco_kernel_mode"),
3372 value_from_string ("KDEBUG-"));
3373 cisco_kernel_mode
= 1;
3376 case 'N': /* Cisco special: status and offsets */
3378 bfd_vma text_addr
, data_addr
, bss_addr
;
3379 bfd_signed_vma text_off
, data_off
, bss_off
;
3382 status
->kind
= TARGET_WAITKIND_STOPPED
;
3383 status
->value
.sig
= (enum target_signal
)
3384 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
3386 if (symfile_objfile
== NULL
)
3388 warning ("Relocation packet recieved with no symbol file. \
3393 /* Relocate object file. Buffer format is NAATT;DD;BB
3394 * where AA is the signal number, TT is the new text
3395 * address, DD * is the new data address, and BB is the
3396 * new bss address. */
3399 text_addr
= strtoul (p
, (char **) &p1
, 16);
3400 if (p1
== p
|| *p1
!= ';')
3401 warning ("Malformed relocation packet: Packet '%s'", buf
);
3403 data_addr
= strtoul (p
, (char **) &p1
, 16);
3404 if (p1
== p
|| *p1
!= ';')
3405 warning ("Malformed relocation packet: Packet '%s'", buf
);
3407 bss_addr
= strtoul (p
, (char **) &p1
, 16);
3409 warning ("Malformed relocation packet: Packet '%s'", buf
);
3411 if (remote_cisco_section_offsets (text_addr
, data_addr
, bss_addr
,
3412 &text_off
, &data_off
, &bss_off
)
3414 if (text_off
!= 0 || data_off
!= 0 || bss_off
!= 0)
3415 remote_cisco_objfile_relocate (text_off
, data_off
, bss_off
);
3419 case 'W': /* Target exited */
3421 /* The remote process exited. */
3422 status
->kind
= TARGET_WAITKIND_EXITED
;
3423 status
->value
.integer
= (fromhex (buf
[1]) << 4) + fromhex (buf
[2]);
3427 status
->kind
= TARGET_WAITKIND_SIGNALLED
;
3428 status
->value
.sig
= (enum target_signal
)
3429 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
3433 case 'O': /* Console output */
3434 remote_console_output (buf
+ 1);
3435 /* Return immediately to the event loop. The event loop will
3436 still be waiting on the inferior afterwards. */
3437 status
->kind
= TARGET_WAITKIND_IGNORE
;
3440 if (last_sent_signal
!= TARGET_SIGNAL_0
)
3442 /* Zero length reply means that we tried 'S' or 'C' and
3443 the remote system doesn't support it. */
3444 target_terminal_ours_for_output ();
3446 ("Can't send signals to this remote system. %s not sent.\n",
3447 target_signal_to_name (last_sent_signal
));
3448 last_sent_signal
= TARGET_SIGNAL_0
;
3449 target_terminal_inferior ();
3451 strcpy ((char *) buf
, last_sent_step
? "s" : "c");
3452 putpkt ((char *) buf
);
3455 /* else fallthrough */
3457 warning ("Invalid remote reply: %s", buf
);
3462 if (thread_num
!= -1)
3464 return pid_to_ptid (thread_num
);
3466 return inferior_ptid
;
3469 /* Number of bytes of registers this stub implements. */
3471 static int register_bytes_found
;
3473 /* Read the remote registers into the block REGS. */
3474 /* Currently we just read all the registers, so we don't use regnum. */
3477 remote_fetch_registers (int regnum
)
3479 struct remote_state
*rs
= get_remote_state ();
3480 char *buf
= alloca (rs
->remote_packet_size
);
3483 char *regs
= alloca (rs
->sizeof_g_packet
);
3485 set_thread (PIDGET (inferior_ptid
), 1);
3489 struct packet_reg
*reg
= packet_reg_from_regnum (rs
, regnum
);
3490 gdb_assert (reg
!= NULL
);
3491 if (!reg
->in_g_packet
)
3492 internal_error (__FILE__
, __LINE__
,
3493 "Attempt to fetch a non G-packet register when this "
3494 "remote.c does not support the p-packet.");
3498 remote_send (buf
, (rs
->remote_packet_size
));
3500 /* Save the size of the packet sent to us by the target. Its used
3501 as a heuristic when determining the max size of packets that the
3502 target can safely receive. */
3503 if ((rs
->actual_register_packet_size
) == 0)
3504 (rs
->actual_register_packet_size
) = strlen (buf
);
3506 /* Unimplemented registers read as all bits zero. */
3507 memset (regs
, 0, rs
->sizeof_g_packet
);
3509 /* We can get out of synch in various cases. If the first character
3510 in the buffer is not a hex character, assume that has happened
3511 and try to fetch another packet to read. */
3512 while ((buf
[0] < '0' || buf
[0] > '9')
3513 && (buf
[0] < 'a' || buf
[0] > 'f')
3514 && buf
[0] != 'x') /* New: unavailable register value */
3517 fprintf_unfiltered (gdb_stdlog
,
3518 "Bad register packet; fetching a new packet\n");
3519 getpkt (buf
, (rs
->remote_packet_size
), 0);
3522 /* Reply describes registers byte by byte, each byte encoded as two
3523 hex characters. Suck them all up, then supply them to the
3524 register cacheing/storage mechanism. */
3527 for (i
= 0; i
< rs
->sizeof_g_packet
; i
++)
3533 warning ("Remote reply is of odd length: %s", buf
);
3534 /* Don't change register_bytes_found in this case, and don't
3535 print a second warning. */
3538 if (p
[0] == 'x' && p
[1] == 'x')
3539 regs
[i
] = 0; /* 'x' */
3541 regs
[i
] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
3545 if (i
!= register_bytes_found
)
3547 register_bytes_found
= i
;
3548 if (REGISTER_BYTES_OK_P ()
3549 && !REGISTER_BYTES_OK (i
))
3550 warning ("Remote reply is too short: %s", buf
);
3556 for (i
= 0; i
< NUM_REGS
+ NUM_PSEUDO_REGS
; i
++)
3558 struct packet_reg
*r
= &rs
->regs
[i
];
3561 if (r
->offset
* 2 >= strlen (buf
))
3562 /* A short packet that didn't include the register's
3563 value, this implies that the register is zero (and
3564 not that the register is unavailable). Supply that
3566 regcache_raw_supply (current_regcache
, r
->regnum
, NULL
);
3567 else if (buf
[r
->offset
* 2] == 'x')
3569 gdb_assert (r
->offset
* 2 < strlen (buf
));
3570 /* The register isn't available, mark it as such (at
3571 the same time setting the value to zero). */
3572 regcache_raw_supply (current_regcache
, r
->regnum
, NULL
);
3573 set_register_cached (i
, -1);
3576 regcache_raw_supply (current_regcache
, r
->regnum
,
3583 /* Prepare to store registers. Since we may send them all (using a
3584 'G' request), we have to read out the ones we don't want to change
3588 remote_prepare_to_store (void)
3590 struct remote_state
*rs
= get_remote_state ();
3592 char buf
[MAX_REGISTER_SIZE
];
3594 /* Make sure the entire registers array is valid. */
3595 switch (remote_protocol_P
.support
)
3597 case PACKET_DISABLE
:
3598 case PACKET_SUPPORT_UNKNOWN
:
3599 /* Make sure all the necessary registers are cached. */
3600 for (i
= 0; i
< NUM_REGS
; i
++)
3601 if (rs
->regs
[i
].in_g_packet
)
3602 regcache_raw_read (current_regcache
, rs
->regs
[i
].regnum
, buf
);
3609 /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF
3610 packet was not recognized. */
3613 store_register_using_P (int regnum
)
3615 struct remote_state
*rs
= get_remote_state ();
3616 struct packet_reg
*reg
= packet_reg_from_regnum (rs
, regnum
);
3617 /* Try storing a single register. */
3618 char *buf
= alloca (rs
->remote_packet_size
);
3619 char regp
[MAX_REGISTER_SIZE
];
3623 sprintf (buf
, "P%s=", phex_nz (reg
->pnum
, 0));
3624 p
= buf
+ strlen (buf
);
3625 regcache_collect (reg
->regnum
, regp
);
3626 bin2hex (regp
, p
, DEPRECATED_REGISTER_RAW_SIZE (reg
->regnum
));
3627 remote_send (buf
, rs
->remote_packet_size
);
3629 return buf
[0] != '\0';
3633 /* Store register REGNUM, or all registers if REGNUM == -1, from the contents
3634 of the register cache buffer. FIXME: ignores errors. */
3637 remote_store_registers (int regnum
)
3639 struct remote_state
*rs
= get_remote_state ();
3645 set_thread (PIDGET (inferior_ptid
), 1);
3649 switch (remote_protocol_P
.support
)
3651 case PACKET_DISABLE
:
3654 if (store_register_using_P (regnum
))
3657 error ("Protocol error: P packet not recognized by stub");
3658 case PACKET_SUPPORT_UNKNOWN
:
3659 if (store_register_using_P (regnum
))
3661 /* The stub recognized the 'P' packet. Remember this. */
3662 remote_protocol_P
.support
= PACKET_ENABLE
;
3667 /* The stub does not support the 'P' packet. Use 'G'
3668 instead, and don't try using 'P' in the future (it
3669 will just waste our time). */
3670 remote_protocol_P
.support
= PACKET_DISABLE
;
3676 /* Extract all the registers in the regcache copying them into a
3680 regs
= alloca (rs
->sizeof_g_packet
);
3681 memset (regs
, rs
->sizeof_g_packet
, 0);
3682 for (i
= 0; i
< NUM_REGS
+ NUM_PSEUDO_REGS
; i
++)
3684 struct packet_reg
*r
= &rs
->regs
[i
];
3686 regcache_collect (r
->regnum
, regs
+ r
->offset
);
3690 /* Command describes registers byte by byte,
3691 each byte encoded as two hex characters. */
3692 buf
= alloca (rs
->remote_packet_size
);
3695 /* remote_prepare_to_store insures that register_bytes_found gets set. */
3696 bin2hex (regs
, p
, register_bytes_found
);
3697 remote_send (buf
, (rs
->remote_packet_size
));
3701 /* Return the number of hex digits in num. */
3704 hexnumlen (ULONGEST num
)
3708 for (i
= 0; num
!= 0; i
++)
3714 /* Set BUF to the minimum number of hex digits representing NUM. */
3717 hexnumstr (char *buf
, ULONGEST num
)
3719 int len
= hexnumlen (num
);
3720 return hexnumnstr (buf
, num
, len
);
3724 /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */
3727 hexnumnstr (char *buf
, ULONGEST num
, int width
)
3733 for (i
= width
- 1; i
>= 0; i
--)
3735 buf
[i
] = "0123456789abcdef"[(num
& 0xf)];
3742 /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */
3745 remote_address_masked (CORE_ADDR addr
)
3747 if (remote_address_size
> 0
3748 && remote_address_size
< (sizeof (ULONGEST
) * 8))
3750 /* Only create a mask when that mask can safely be constructed
3751 in a ULONGEST variable. */
3753 mask
= (mask
<< remote_address_size
) - 1;
3759 /* Determine whether the remote target supports binary downloading.
3760 This is accomplished by sending a no-op memory write of zero length
3761 to the target at the specified address. It does not suffice to send
3762 the whole packet, since many stubs strip the eighth bit and subsequently
3763 compute a wrong checksum, which causes real havoc with remote_write_bytes.
3765 NOTE: This can still lose if the serial line is not eight-bit
3766 clean. In cases like this, the user should clear "remote
3770 check_binary_download (CORE_ADDR addr
)
3772 struct remote_state
*rs
= get_remote_state ();
3773 switch (remote_protocol_binary_download
.support
)
3775 case PACKET_DISABLE
:
3779 case PACKET_SUPPORT_UNKNOWN
:
3781 char *buf
= alloca (rs
->remote_packet_size
);
3786 p
+= hexnumstr (p
, (ULONGEST
) addr
);
3788 p
+= hexnumstr (p
, (ULONGEST
) 0);
3792 putpkt_binary (buf
, (int) (p
- buf
));
3793 getpkt (buf
, (rs
->remote_packet_size
), 0);
3798 fprintf_unfiltered (gdb_stdlog
,
3799 "binary downloading NOT suppported by target\n");
3800 remote_protocol_binary_download
.support
= PACKET_DISABLE
;
3805 fprintf_unfiltered (gdb_stdlog
,
3806 "binary downloading suppported by target\n");
3807 remote_protocol_binary_download
.support
= PACKET_ENABLE
;
3814 /* Write memory data directly to the remote machine.
3815 This does not inform the data cache; the data cache uses this.
3816 MEMADDR is the address in the remote memory space.
3817 MYADDR is the address of the buffer in our space.
3818 LEN is the number of bytes.
3820 Returns number of bytes transferred, or 0 (setting errno) for
3821 error. Only transfer a single packet. */
3824 remote_write_bytes (CORE_ADDR memaddr
, char *myaddr
, int len
)
3828 unsigned char *plen
;
3834 unsigned char *payload_start
;
3836 /* Verify that the target can support a binary download. */
3837 check_binary_download (memaddr
);
3839 /* Compute the size, and then allocate space for the largest
3840 possible packet. Include space for an extra trailing NUL. */
3841 sizeof_buf
= get_memory_write_packet_size () + 1;
3842 buf
= alloca (sizeof_buf
);
3844 /* Compute the size of the actual payload by subtracting out the
3845 packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */
3846 payload_size
= (get_memory_write_packet_size () - (strlen ("$M,:#NN")
3847 + hexnumlen (memaddr
)
3848 + hexnumlen (len
)));
3850 /* Construct the packet header: "[MX]<memaddr>,<len>:". */
3852 /* Append "[XM]". Compute a best guess of the number of bytes
3853 actually transfered. */
3855 switch (remote_protocol_binary_download
.support
)
3859 /* Best guess at number of bytes that will fit. */
3860 todo
= min (len
, payload_size
);
3862 case PACKET_DISABLE
:
3864 /* num bytes that will fit */
3865 todo
= min (len
, payload_size
/ 2);
3867 case PACKET_SUPPORT_UNKNOWN
:
3868 internal_error (__FILE__
, __LINE__
,
3869 "remote_write_bytes: bad internal state");
3871 internal_error (__FILE__
, __LINE__
, "bad switch");
3874 /* Append "<memaddr>". */
3875 memaddr
= remote_address_masked (memaddr
);
3876 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
3881 /* Append <len>. Retain the location/size of <len>. It may need to
3882 be adjusted once the packet body has been created. */
3884 plenlen
= hexnumstr (p
, (ULONGEST
) todo
);
3891 /* Append the packet body. */
3893 switch (remote_protocol_binary_download
.support
)
3896 /* Binary mode. Send target system values byte by byte, in
3897 increasing byte addresses. Only escape certain critical
3900 (nr_bytes
< todo
) && (p
- payload_start
) < payload_size
;
3903 switch (myaddr
[nr_bytes
] & 0xff)
3908 /* These must be escaped */
3910 *p
++ = (myaddr
[nr_bytes
] & 0xff) ^ 0x20;
3913 *p
++ = myaddr
[nr_bytes
] & 0xff;
3917 if (nr_bytes
< todo
)
3919 /* Escape chars have filled up the buffer prematurely,
3920 and we have actually sent fewer bytes than planned.
3921 Fix-up the length field of the packet. Use the same
3922 number of characters as before. */
3923 plen
+= hexnumnstr (plen
, (ULONGEST
) nr_bytes
, plenlen
);
3924 *plen
= ':'; /* overwrite \0 from hexnumnstr() */
3927 case PACKET_DISABLE
:
3928 /* Normal mode: Send target system values byte by byte, in
3929 increasing byte addresses. Each byte is encoded as a two hex
3931 nr_bytes
= bin2hex (myaddr
, p
, todo
);
3934 case PACKET_SUPPORT_UNKNOWN
:
3935 internal_error (__FILE__
, __LINE__
,
3936 "remote_write_bytes: bad internal state");
3938 internal_error (__FILE__
, __LINE__
, "bad switch");
3941 putpkt_binary (buf
, (int) (p
- buf
));
3942 getpkt (buf
, sizeof_buf
, 0);
3946 /* There is no correspondance between what the remote protocol
3947 uses for errors and errno codes. We would like a cleaner way
3948 of representing errors (big enough to include errno codes,
3949 bfd_error codes, and others). But for now just return EIO. */
3954 /* Return NR_BYTES, not TODO, in case escape chars caused us to send fewer
3955 bytes than we'd planned. */
3959 /* Read memory data directly from the remote machine.
3960 This does not use the data cache; the data cache uses this.
3961 MEMADDR is the address in the remote memory space.
3962 MYADDR is the address of the buffer in our space.
3963 LEN is the number of bytes.
3965 Returns number of bytes transferred, or 0 for error. */
3967 /* NOTE: cagney/1999-10-18: This function (and its siblings in other
3968 remote targets) shouldn't attempt to read the entire buffer.
3969 Instead it should read a single packet worth of data and then
3970 return the byte size of that packet to the caller. The caller (its
3971 caller and its callers caller ;-) already contains code for
3972 handling partial reads. */
3975 remote_read_bytes (CORE_ADDR memaddr
, char *myaddr
, int len
)
3978 int max_buf_size
; /* Max size of packet output buffer */
3982 /* Create a buffer big enough for this packet. */
3983 max_buf_size
= get_memory_read_packet_size ();
3984 sizeof_buf
= max_buf_size
+ 1; /* Space for trailing NUL */
3985 buf
= alloca (sizeof_buf
);
3994 todo
= min (len
, max_buf_size
/ 2); /* num bytes that will fit */
3996 /* construct "m"<memaddr>","<len>" */
3997 /* sprintf (buf, "m%lx,%x", (unsigned long) memaddr, todo); */
3998 memaddr
= remote_address_masked (memaddr
);
4001 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
4003 p
+= hexnumstr (p
, (ULONGEST
) todo
);
4007 getpkt (buf
, sizeof_buf
, 0);
4010 && isxdigit (buf
[1]) && isxdigit (buf
[2])
4013 /* There is no correspondance between what the remote protocol uses
4014 for errors and errno codes. We would like a cleaner way of
4015 representing errors (big enough to include errno codes, bfd_error
4016 codes, and others). But for now just return EIO. */
4021 /* Reply describes memory byte by byte,
4022 each byte encoded as two hex characters. */
4025 if ((i
= hex2bin (p
, myaddr
, todo
)) < todo
)
4027 /* Reply is short. This means that we were able to read
4028 only part of what we wanted to. */
4029 return i
+ (origlen
- len
);
4038 /* Read or write LEN bytes from inferior memory at MEMADDR,
4039 transferring to or from debugger address BUFFER. Write to inferior if
4040 SHOULD_WRITE is nonzero. Returns length of data written or read; 0
4041 for error. TARGET is unused. */
4044 remote_xfer_memory (CORE_ADDR mem_addr
, char *buffer
, int mem_len
,
4045 int should_write
, struct mem_attrib
*attrib
,
4046 struct target_ops
*target
)
4048 CORE_ADDR targ_addr
;
4052 /* Should this be the selected frame? */
4053 gdbarch_remote_translate_xfer_address (current_gdbarch
, current_regcache
,
4055 &targ_addr
, &targ_len
);
4060 res
= remote_write_bytes (targ_addr
, buffer
, targ_len
);
4062 res
= remote_read_bytes (targ_addr
, buffer
, targ_len
);
4068 remote_files_info (struct target_ops
*ignore
)
4070 puts_filtered ("Debugging a target over a serial line.\n");
4073 /* Stuff for dealing with the packets which are part of this protocol.
4074 See comment at top of file for details. */
4076 /* Read a single character from the remote end, masking it down to 7 bits. */
4079 readchar (int timeout
)
4083 ch
= serial_readchar (remote_desc
, timeout
);
4088 switch ((enum serial_rc
) ch
)
4091 target_mourn_inferior ();
4092 error ("Remote connection closed");
4095 perror_with_name ("Remote communication error");
4097 case SERIAL_TIMEOUT
:
4103 /* Send the command in BUF to the remote machine, and read the reply
4104 into BUF. Report an error if we get an error reply. */
4107 remote_send (char *buf
,
4111 getpkt (buf
, sizeof_buf
, 0);
4114 error ("Remote failure reply: %s", buf
);
4117 /* Display a null-terminated packet on stdout, for debugging, using C
4121 print_packet (char *buf
)
4123 puts_filtered ("\"");
4124 fputstr_filtered (buf
, '"', gdb_stdout
);
4125 puts_filtered ("\"");
4131 return putpkt_binary (buf
, strlen (buf
));
4134 /* Send a packet to the remote machine, with error checking. The data
4135 of the packet is in BUF. The string in BUF can be at most (rs->remote_packet_size) - 5
4136 to account for the $, # and checksum, and for a possible /0 if we are
4137 debugging (remote_debug) and want to print the sent packet as a string */
4140 putpkt_binary (char *buf
, int cnt
)
4142 struct remote_state
*rs
= get_remote_state ();
4144 unsigned char csum
= 0;
4145 char *buf2
= alloca (cnt
+ 6);
4146 long sizeof_junkbuf
= (rs
->remote_packet_size
);
4147 char *junkbuf
= alloca (sizeof_junkbuf
);
4153 /* Copy the packet into buffer BUF2, encapsulating it
4154 and giving it a checksum. */
4159 for (i
= 0; i
< cnt
; i
++)
4165 *p
++ = tohex ((csum
>> 4) & 0xf);
4166 *p
++ = tohex (csum
& 0xf);
4168 /* Send it over and over until we get a positive ack. */
4172 int started_error_output
= 0;
4177 fprintf_unfiltered (gdb_stdlog
, "Sending packet: ");
4178 fputstrn_unfiltered (buf2
, p
- buf2
, 0, gdb_stdlog
);
4179 fprintf_unfiltered (gdb_stdlog
, "...");
4180 gdb_flush (gdb_stdlog
);
4182 if (serial_write (remote_desc
, buf2
, p
- buf2
))
4183 perror_with_name ("putpkt: write failed");
4185 /* read until either a timeout occurs (-2) or '+' is read */
4188 ch
= readchar (remote_timeout
);
4196 case SERIAL_TIMEOUT
:
4198 if (started_error_output
)
4200 putchar_unfiltered ('\n');
4201 started_error_output
= 0;
4210 fprintf_unfiltered (gdb_stdlog
, "Ack\n");
4214 fprintf_unfiltered (gdb_stdlog
, "Nak\n");
4215 case SERIAL_TIMEOUT
:
4219 break; /* Retransmit buffer */
4223 fprintf_unfiltered (gdb_stdlog
, "Packet instead of Ack, ignoring it\n");
4224 /* It's probably an old response, and we're out of sync.
4225 Just gobble up the packet and ignore it. */
4226 read_frame (junkbuf
, sizeof_junkbuf
);
4227 continue; /* Now, go look for + */
4232 if (!started_error_output
)
4234 started_error_output
= 1;
4235 fprintf_unfiltered (gdb_stdlog
, "putpkt: Junk: ");
4237 fputc_unfiltered (ch
& 0177, gdb_stdlog
);
4241 break; /* Here to retransmit */
4245 /* This is wrong. If doing a long backtrace, the user should be
4246 able to get out next time we call QUIT, without anything as
4247 violent as interrupt_query. If we want to provide a way out of
4248 here without getting to the next QUIT, it should be based on
4249 hitting ^C twice as in remote_wait. */
4259 static int remote_cisco_mode
;
4261 /* Come here after finding the start of the frame. Collect the rest
4262 into BUF, verifying the checksum, length, and handling run-length
4263 compression. No more than sizeof_buf-1 characters are read so that
4264 the buffer can be NUL terminated.
4266 Returns -1 on error, number of characters in buffer (ignoring the
4267 trailing NULL) on success. (could be extended to return one of the
4268 SERIAL status indications). */
4271 read_frame (char *buf
,
4283 /* ASSERT (bc < sizeof_buf - 1) - space for trailing NUL */
4284 c
= readchar (remote_timeout
);
4287 case SERIAL_TIMEOUT
:
4289 fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog
);
4293 fputs_filtered ("Saw new packet start in middle of old one\n",
4295 return -1; /* Start a new packet, count retries */
4298 unsigned char pktcsum
;
4304 check_0
= readchar (remote_timeout
);
4306 check_1
= readchar (remote_timeout
);
4308 if (check_0
== SERIAL_TIMEOUT
|| check_1
== SERIAL_TIMEOUT
)
4311 fputs_filtered ("Timeout in checksum, retrying\n", gdb_stdlog
);
4314 else if (check_0
< 0 || check_1
< 0)
4317 fputs_filtered ("Communication error in checksum\n", gdb_stdlog
);
4321 pktcsum
= (fromhex (check_0
) << 4) | fromhex (check_1
);
4322 if (csum
== pktcsum
)
4327 fprintf_filtered (gdb_stdlog
,
4328 "Bad checksum, sentsum=0x%x, csum=0x%x, buf=",
4330 fputs_filtered (buf
, gdb_stdlog
);
4331 fputs_filtered ("\n", gdb_stdlog
);
4333 /* Number of characters in buffer ignoring trailing
4337 case '*': /* Run length encoding */
4342 if (remote_cisco_mode
== 0)
4344 c
= readchar (remote_timeout
);
4346 repeat
= c
- ' ' + 3; /* Compute repeat count */
4350 /* Cisco's run-length encoding variant uses two
4351 hex chars to represent the repeat count. */
4353 c
= readchar (remote_timeout
);
4355 repeat
= fromhex (c
) << 4;
4356 c
= readchar (remote_timeout
);
4358 repeat
+= fromhex (c
);
4361 /* The character before ``*'' is repeated. */
4363 if (repeat
> 0 && repeat
<= 255
4365 && bc
+ repeat
- 1 < sizeof_buf
- 1)
4367 memset (&buf
[bc
], buf
[bc
- 1], repeat
);
4373 printf_filtered ("Repeat count %d too large for buffer: ", repeat
);
4374 puts_filtered (buf
);
4375 puts_filtered ("\n");
4379 if (bc
< sizeof_buf
- 1)
4387 puts_filtered ("Remote packet too long: ");
4388 puts_filtered (buf
);
4389 puts_filtered ("\n");
4396 /* Read a packet from the remote machine, with error checking, and
4397 store it in BUF. If FOREVER, wait forever rather than timing out;
4398 this is used (in synchronous mode) to wait for a target that is is
4399 executing user code to stop. */
4400 /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we
4401 don't have to change all the calls to getpkt to deal with the
4402 return value, because at the moment I don't know what the right
4403 thing to do it for those. */
4411 timed_out
= getpkt_sane (buf
, sizeof_buf
, forever
);
4415 /* Read a packet from the remote machine, with error checking, and
4416 store it in BUF. If FOREVER, wait forever rather than timing out;
4417 this is used (in synchronous mode) to wait for a target that is is
4418 executing user code to stop. If FOREVER == 0, this function is
4419 allowed to time out gracefully and return an indication of this to
4422 getpkt_sane (char *buf
,
4431 strcpy (buf
, "timeout");
4435 timeout
= watchdog
> 0 ? watchdog
: -1;
4439 timeout
= remote_timeout
;
4443 for (tries
= 1; tries
<= MAX_TRIES
; tries
++)
4445 /* This can loop forever if the remote side sends us characters
4446 continuously, but if it pauses, we'll get a zero from readchar
4447 because of timeout. Then we'll count that as a retry. */
4449 /* Note that we will only wait forever prior to the start of a packet.
4450 After that, we expect characters to arrive at a brisk pace. They
4451 should show up within remote_timeout intervals. */
4455 c
= readchar (timeout
);
4457 if (c
== SERIAL_TIMEOUT
)
4459 if (forever
) /* Watchdog went off? Kill the target. */
4462 target_mourn_inferior ();
4463 error ("Watchdog has expired. Target detached.\n");
4466 fputs_filtered ("Timed out.\n", gdb_stdlog
);
4472 /* We've found the start of a packet, now collect the data. */
4474 val
= read_frame (buf
, sizeof_buf
);
4480 fprintf_unfiltered (gdb_stdlog
, "Packet received: ");
4481 fputstr_unfiltered (buf
, 0, gdb_stdlog
);
4482 fprintf_unfiltered (gdb_stdlog
, "\n");
4484 serial_write (remote_desc
, "+", 1);
4488 /* Try the whole thing again. */
4490 serial_write (remote_desc
, "-", 1);
4493 /* We have tried hard enough, and just can't receive the packet. Give up. */
4495 printf_unfiltered ("Ignoring packet error, continuing...\n");
4496 serial_write (remote_desc
, "+", 1);
4503 /* For some mysterious reason, wait_for_inferior calls kill instead of
4504 mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */
4508 target_mourn_inferior ();
4512 /* Use catch_errors so the user can quit from gdb even when we aren't on
4513 speaking terms with the remote system. */
4514 catch_errors ((catch_errors_ftype
*) putpkt
, "k", "", RETURN_MASK_ERROR
);
4516 /* Don't wait for it to die. I'm not really sure it matters whether
4517 we do or not. For the existing stubs, kill is a noop. */
4518 target_mourn_inferior ();
4521 /* Async version of remote_kill. */
4523 remote_async_kill (void)
4525 /* Unregister the file descriptor from the event loop. */
4526 if (target_is_async_p ())
4527 serial_async (remote_desc
, NULL
, 0);
4529 /* For some mysterious reason, wait_for_inferior calls kill instead of
4530 mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */
4534 target_mourn_inferior ();
4538 /* Use catch_errors so the user can quit from gdb even when we aren't on
4539 speaking terms with the remote system. */
4540 catch_errors ((catch_errors_ftype
*) putpkt
, "k", "", RETURN_MASK_ERROR
);
4542 /* Don't wait for it to die. I'm not really sure it matters whether
4543 we do or not. For the existing stubs, kill is a noop. */
4544 target_mourn_inferior ();
4550 remote_mourn_1 (&remote_ops
);
4554 remote_async_mourn (void)
4556 remote_mourn_1 (&remote_async_ops
);
4560 extended_remote_mourn (void)
4562 /* We do _not_ want to mourn the target like this; this will
4563 remove the extended remote target from the target stack,
4564 and the next time the user says "run" it'll fail.
4566 FIXME: What is the right thing to do here? */
4568 remote_mourn_1 (&extended_remote_ops
);
4572 /* Worker function for remote_mourn. */
4574 remote_mourn_1 (struct target_ops
*target
)
4576 unpush_target (target
);
4577 generic_mourn_inferior ();
4580 /* In the extended protocol we want to be able to do things like
4581 "run" and have them basically work as expected. So we need
4582 a special create_inferior function.
4584 FIXME: One day add support for changing the exec file
4585 we're debugging, arguments and an environment. */
4588 extended_remote_create_inferior (char *exec_file
, char *args
, char **env
)
4590 /* Rip out the breakpoints; we'll reinsert them after restarting
4591 the remote server. */
4592 remove_breakpoints ();
4594 /* Now restart the remote server. */
4595 extended_remote_restart ();
4597 /* Now put the breakpoints back in. This way we're safe if the
4598 restart function works via a unix fork on the remote side. */
4599 insert_breakpoints ();
4601 /* Clean up from the last time we were running. */
4602 clear_proceed_status ();
4604 /* Let the remote process run. */
4605 proceed (-1, TARGET_SIGNAL_0
, 0);
4608 /* Async version of extended_remote_create_inferior. */
4610 extended_remote_async_create_inferior (char *exec_file
, char *args
, char **env
)
4612 /* Rip out the breakpoints; we'll reinsert them after restarting
4613 the remote server. */
4614 remove_breakpoints ();
4616 /* If running asynchronously, register the target file descriptor
4617 with the event loop. */
4618 if (event_loop_p
&& target_can_async_p ())
4619 target_async (inferior_event_handler
, 0);
4621 /* Now restart the remote server. */
4622 extended_remote_restart ();
4624 /* Now put the breakpoints back in. This way we're safe if the
4625 restart function works via a unix fork on the remote side. */
4626 insert_breakpoints ();
4628 /* Clean up from the last time we were running. */
4629 clear_proceed_status ();
4631 /* Let the remote process run. */
4632 proceed (-1, TARGET_SIGNAL_0
, 0);
4636 /* On some machines, e.g. 68k, we may use a different breakpoint
4637 instruction than other targets; in those use
4638 DEPRECATED_REMOTE_BREAKPOINT instead of just BREAKPOINT_FROM_PC.
4639 Also, bi-endian targets may define
4640 DEPRECATED_LITTLE_REMOTE_BREAKPOINT and
4641 DEPRECATED_BIG_REMOTE_BREAKPOINT. If none of these are defined, we
4642 just call the standard routines that are in mem-break.c. */
4644 /* NOTE: cagney/2003-06-08: This is silly. A remote and simulator
4645 target should use an identical BREAKPOINT_FROM_PC. As for native,
4646 the ARCH-OS-tdep.c code can override the default. */
4648 #if defined (DEPRECATED_LITTLE_REMOTE_BREAKPOINT) && defined (DEPRECATED_BIG_REMOTE_BREAKPOINT) && !defined(DEPRECATED_REMOTE_BREAKPOINT)
4649 #define DEPRECATED_REMOTE_BREAKPOINT
4652 #ifdef DEPRECATED_REMOTE_BREAKPOINT
4654 /* If the target isn't bi-endian, just pretend it is. */
4655 #if !defined (DEPRECATED_LITTLE_REMOTE_BREAKPOINT) && !defined (DEPRECATED_BIG_REMOTE_BREAKPOINT)
4656 #define DEPRECATED_LITTLE_REMOTE_BREAKPOINT DEPRECATED_REMOTE_BREAKPOINT
4657 #define DEPRECATED_BIG_REMOTE_BREAKPOINT DEPRECATED_REMOTE_BREAKPOINT
4660 static unsigned char big_break_insn
[] = DEPRECATED_BIG_REMOTE_BREAKPOINT
;
4661 static unsigned char little_break_insn
[] = DEPRECATED_LITTLE_REMOTE_BREAKPOINT
;
4663 #endif /* DEPRECATED_REMOTE_BREAKPOINT */
4665 /* Insert a breakpoint on targets that don't have any better
4666 breakpoint support. We read the contents of the target location
4667 and stash it, then overwrite it with a breakpoint instruction.
4668 ADDR is the target location in the target machine. CONTENTS_CACHE
4669 is a pointer to memory allocated for saving the target contents.
4670 It is guaranteed by the caller to be long enough to save the number
4671 of bytes returned by BREAKPOINT_FROM_PC. */
4674 remote_insert_breakpoint (CORE_ADDR addr
, char *contents_cache
)
4676 struct remote_state
*rs
= get_remote_state ();
4677 #ifdef DEPRECATED_REMOTE_BREAKPOINT
4682 /* Try the "Z" s/w breakpoint packet if it is not already disabled.
4683 If it succeeds, then set the support to PACKET_ENABLE. If it
4684 fails, and the user has explicitly requested the Z support then
4685 report an error, otherwise, mark it disabled and go on. */
4687 if (remote_protocol_Z
[Z_PACKET_SOFTWARE_BP
].support
!= PACKET_DISABLE
)
4689 char *buf
= alloca (rs
->remote_packet_size
);
4692 addr
= remote_address_masked (addr
);
4696 p
+= hexnumstr (p
, (ULONGEST
) addr
);
4697 BREAKPOINT_FROM_PC (&addr
, &bp_size
);
4698 sprintf (p
, ",%d", bp_size
);
4701 getpkt (buf
, (rs
->remote_packet_size
), 0);
4703 switch (packet_ok (buf
, &remote_protocol_Z
[Z_PACKET_SOFTWARE_BP
]))
4709 case PACKET_UNKNOWN
:
4714 #ifdef DEPRECATED_REMOTE_BREAKPOINT
4715 val
= target_read_memory (addr
, contents_cache
, sizeof big_break_insn
);
4719 if (TARGET_BYTE_ORDER
== BFD_ENDIAN_BIG
)
4720 val
= target_write_memory (addr
, (char *) big_break_insn
,
4721 sizeof big_break_insn
);
4723 val
= target_write_memory (addr
, (char *) little_break_insn
,
4724 sizeof little_break_insn
);
4729 return memory_insert_breakpoint (addr
, contents_cache
);
4730 #endif /* DEPRECATED_REMOTE_BREAKPOINT */
4734 remote_remove_breakpoint (CORE_ADDR addr
, char *contents_cache
)
4736 struct remote_state
*rs
= get_remote_state ();
4739 if (remote_protocol_Z
[Z_PACKET_SOFTWARE_BP
].support
!= PACKET_DISABLE
)
4741 char *buf
= alloca (rs
->remote_packet_size
);
4748 addr
= remote_address_masked (addr
);
4749 p
+= hexnumstr (p
, (ULONGEST
) addr
);
4750 BREAKPOINT_FROM_PC (&addr
, &bp_size
);
4751 sprintf (p
, ",%d", bp_size
);
4754 getpkt (buf
, (rs
->remote_packet_size
), 0);
4756 return (buf
[0] == 'E');
4759 #ifdef DEPRECATED_REMOTE_BREAKPOINT
4760 return target_write_memory (addr
, contents_cache
, sizeof big_break_insn
);
4762 return memory_remove_breakpoint (addr
, contents_cache
);
4763 #endif /* DEPRECATED_REMOTE_BREAKPOINT */
4767 watchpoint_to_Z_packet (int type
)
4781 internal_error (__FILE__
, __LINE__
,
4782 "hw_bp_to_z: bad watchpoint type %d", type
);
4787 remote_insert_watchpoint (CORE_ADDR addr
, int len
, int type
)
4789 struct remote_state
*rs
= get_remote_state ();
4790 char *buf
= alloca (rs
->remote_packet_size
);
4792 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
4794 if (remote_protocol_Z
[packet
].support
== PACKET_DISABLE
)
4795 error ("Can't set hardware watchpoints without the '%s' (%s) packet\n",
4796 remote_protocol_Z
[packet
].name
,
4797 remote_protocol_Z
[packet
].title
);
4799 sprintf (buf
, "Z%x,", packet
);
4800 p
= strchr (buf
, '\0');
4801 addr
= remote_address_masked (addr
);
4802 p
+= hexnumstr (p
, (ULONGEST
) addr
);
4803 sprintf (p
, ",%x", len
);
4806 getpkt (buf
, (rs
->remote_packet_size
), 0);
4808 switch (packet_ok (buf
, &remote_protocol_Z
[packet
]))
4811 case PACKET_UNKNOWN
:
4816 internal_error (__FILE__
, __LINE__
,
4817 "remote_insert_watchpoint: reached end of function");
4822 remote_remove_watchpoint (CORE_ADDR addr
, int len
, int type
)
4824 struct remote_state
*rs
= get_remote_state ();
4825 char *buf
= alloca (rs
->remote_packet_size
);
4827 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
4829 if (remote_protocol_Z
[packet
].support
== PACKET_DISABLE
)
4830 error ("Can't clear hardware watchpoints without the '%s' (%s) packet\n",
4831 remote_protocol_Z
[packet
].name
,
4832 remote_protocol_Z
[packet
].title
);
4834 sprintf (buf
, "z%x,", packet
);
4835 p
= strchr (buf
, '\0');
4836 addr
= remote_address_masked (addr
);
4837 p
+= hexnumstr (p
, (ULONGEST
) addr
);
4838 sprintf (p
, ",%x", len
);
4840 getpkt (buf
, (rs
->remote_packet_size
), 0);
4842 switch (packet_ok (buf
, &remote_protocol_Z
[packet
]))
4845 case PACKET_UNKNOWN
:
4850 internal_error (__FILE__
, __LINE__
,
4851 "remote_remove_watchpoint: reached end of function");
4855 int remote_hw_watchpoint_limit
= -1;
4856 int remote_hw_breakpoint_limit
= -1;
4859 remote_check_watch_resources (int type
, int cnt
, int ot
)
4861 if (type
== bp_hardware_breakpoint
)
4863 if (remote_hw_breakpoint_limit
== 0)
4865 else if (remote_hw_breakpoint_limit
< 0)
4867 else if (cnt
<= remote_hw_breakpoint_limit
)
4872 if (remote_hw_watchpoint_limit
== 0)
4874 else if (remote_hw_watchpoint_limit
< 0)
4878 else if (cnt
<= remote_hw_watchpoint_limit
)
4885 remote_stopped_by_watchpoint (void)
4887 return remote_stopped_by_watchpoint_p
;
4891 remote_stopped_data_address (void)
4893 if (remote_stopped_by_watchpoint ())
4894 return remote_watch_data_address
;
4895 return (CORE_ADDR
)0;
4900 remote_insert_hw_breakpoint (CORE_ADDR addr
, char *shadow
)
4903 struct remote_state
*rs
= get_remote_state ();
4904 char *buf
= alloca (rs
->remote_packet_size
);
4907 /* The length field should be set to the size of a breakpoint
4910 BREAKPOINT_FROM_PC (&addr
, &len
);
4912 if (remote_protocol_Z
[Z_PACKET_HARDWARE_BP
].support
== PACKET_DISABLE
)
4913 error ("Can't set hardware breakpoint without the '%s' (%s) packet\n",
4914 remote_protocol_Z
[Z_PACKET_HARDWARE_BP
].name
,
4915 remote_protocol_Z
[Z_PACKET_HARDWARE_BP
].title
);
4921 addr
= remote_address_masked (addr
);
4922 p
+= hexnumstr (p
, (ULONGEST
) addr
);
4923 sprintf (p
, ",%x", len
);
4926 getpkt (buf
, (rs
->remote_packet_size
), 0);
4928 switch (packet_ok (buf
, &remote_protocol_Z
[Z_PACKET_HARDWARE_BP
]))
4931 case PACKET_UNKNOWN
:
4936 internal_error (__FILE__
, __LINE__
,
4937 "remote_insert_hw_breakpoint: reached end of function");
4942 remote_remove_hw_breakpoint (CORE_ADDR addr
, char *shadow
)
4945 struct remote_state
*rs
= get_remote_state ();
4946 char *buf
= alloca (rs
->remote_packet_size
);
4949 /* The length field should be set to the size of a breakpoint
4952 BREAKPOINT_FROM_PC (&addr
, &len
);
4954 if (remote_protocol_Z
[Z_PACKET_HARDWARE_BP
].support
== PACKET_DISABLE
)
4955 error ("Can't clear hardware breakpoint without the '%s' (%s) packet\n",
4956 remote_protocol_Z
[Z_PACKET_HARDWARE_BP
].name
,
4957 remote_protocol_Z
[Z_PACKET_HARDWARE_BP
].title
);
4963 addr
= remote_address_masked (addr
);
4964 p
+= hexnumstr (p
, (ULONGEST
) addr
);
4965 sprintf (p
, ",%x", len
);
4968 getpkt (buf
, (rs
->remote_packet_size
), 0);
4970 switch (packet_ok (buf
, &remote_protocol_Z
[Z_PACKET_HARDWARE_BP
]))
4973 case PACKET_UNKNOWN
:
4978 internal_error (__FILE__
, __LINE__
,
4979 "remote_remove_hw_breakpoint: reached end of function");
4982 /* Some targets are only capable of doing downloads, and afterwards
4983 they switch to the remote serial protocol. This function provides
4984 a clean way to get from the download target to the remote target.
4985 It's basically just a wrapper so that we don't have to expose any
4986 of the internal workings of remote.c.
4988 Prior to calling this routine, you should shutdown the current
4989 target code, else you will get the "A program is being debugged
4990 already..." message. Usually a call to pop_target() suffices. */
4993 push_remote_target (char *name
, int from_tty
)
4995 printf_filtered ("Switching to remote protocol\n");
4996 remote_open (name
, from_tty
);
4999 /* Table used by the crc32 function to calcuate the checksum. */
5001 static unsigned long crc32_table
[256] =
5004 static unsigned long
5005 crc32 (unsigned char *buf
, int len
, unsigned int crc
)
5007 if (!crc32_table
[1])
5009 /* Initialize the CRC table and the decoding table. */
5013 for (i
= 0; i
< 256; i
++)
5015 for (c
= i
<< 24, j
= 8; j
> 0; --j
)
5016 c
= c
& 0x80000000 ? (c
<< 1) ^ 0x04c11db7 : (c
<< 1);
5023 crc
= (crc
<< 8) ^ crc32_table
[((crc
>> 24) ^ *buf
) & 255];
5029 /* compare-sections command
5031 With no arguments, compares each loadable section in the exec bfd
5032 with the same memory range on the target, and reports mismatches.
5033 Useful for verifying the image on the target against the exec file.
5034 Depends on the target understanding the new "qCRC:" request. */
5036 /* FIXME: cagney/1999-10-26: This command should be broken down into a
5037 target method (target verify memory) and generic version of the
5038 actual command. This will allow other high-level code (especially
5039 generic_load()) to make use of this target functionality. */
5042 compare_sections_command (char *args
, int from_tty
)
5044 struct remote_state
*rs
= get_remote_state ();
5046 unsigned long host_crc
, target_crc
;
5047 extern bfd
*exec_bfd
;
5048 struct cleanup
*old_chain
;
5051 const char *sectname
;
5052 char *buf
= alloca (rs
->remote_packet_size
);
5059 error ("command cannot be used without an exec file");
5060 if (!current_target
.to_shortname
||
5061 strcmp (current_target
.to_shortname
, "remote") != 0)
5062 error ("command can only be used with remote target");
5064 for (s
= exec_bfd
->sections
; s
; s
= s
->next
)
5066 if (!(s
->flags
& SEC_LOAD
))
5067 continue; /* skip non-loadable section */
5069 size
= bfd_get_section_size_before_reloc (s
);
5071 continue; /* skip zero-length section */
5073 sectname
= bfd_get_section_name (exec_bfd
, s
);
5074 if (args
&& strcmp (args
, sectname
) != 0)
5075 continue; /* not the section selected by user */
5077 matched
= 1; /* do this section */
5079 /* FIXME: assumes lma can fit into long */
5080 sprintf (buf
, "qCRC:%lx,%lx", (long) lma
, (long) size
);
5083 /* be clever; compute the host_crc before waiting for target reply */
5084 sectdata
= xmalloc (size
);
5085 old_chain
= make_cleanup (xfree
, sectdata
);
5086 bfd_get_section_contents (exec_bfd
, s
, sectdata
, 0, size
);
5087 host_crc
= crc32 ((unsigned char *) sectdata
, size
, 0xffffffff);
5089 getpkt (buf
, (rs
->remote_packet_size
), 0);
5091 error ("target memory fault, section %s, range 0x%s -- 0x%s",
5092 sectname
, paddr (lma
), paddr (lma
+ size
));
5094 error ("remote target does not support this operation");
5096 for (target_crc
= 0, tmp
= &buf
[1]; *tmp
; tmp
++)
5097 target_crc
= target_crc
* 16 + fromhex (*tmp
);
5099 printf_filtered ("Section %s, range 0x%s -- 0x%s: ",
5100 sectname
, paddr (lma
), paddr (lma
+ size
));
5101 if (host_crc
== target_crc
)
5102 printf_filtered ("matched.\n");
5105 printf_filtered ("MIS-MATCHED!\n");
5109 do_cleanups (old_chain
);
5112 warning ("One or more sections of the remote executable does not match\n\
5113 the loaded file\n");
5114 if (args
&& !matched
)
5115 printf_filtered ("No loaded section named '%s'.\n", args
);
5119 remote_xfer_partial (struct target_ops
*ops
, enum target_object object
,
5120 const char *annex
, void *readbuf
, const void *writebuf
,
5121 ULONGEST offset
, LONGEST len
)
5123 struct remote_state
*rs
= get_remote_state ();
5125 char *buf2
= alloca (rs
->remote_packet_size
);
5126 char *p2
= &buf2
[0];
5129 /* Only handle reads. */
5130 if (writebuf
!= NULL
|| readbuf
== NULL
)
5133 /* Map pre-existing objects onto letters. DO NOT do this for new
5134 objects!!! Instead specify new query packets. */
5137 case TARGET_OBJECT_KOD
:
5140 case TARGET_OBJECT_AVR
:
5147 /* Note: a zero OFFSET and LEN can be used to query the minimum
5149 if (offset
== 0 && len
== 0)
5150 return (rs
->remote_packet_size
);
5151 /* Minimum outbuf size is (rs->remote_packet_size) - if bufsiz is
5152 not large enough let the caller. */
5153 if (len
< (rs
->remote_packet_size
))
5155 len
= rs
->remote_packet_size
;
5157 /* except for querying the minimum buffer size, target must be open */
5159 error ("remote query is only available after target open");
5161 gdb_assert (annex
!= NULL
);
5162 gdb_assert (readbuf
!= NULL
);
5167 /* we used one buffer char for the remote protocol q command and another
5168 for the query type. As the remote protocol encapsulation uses 4 chars
5169 plus one extra in case we are debugging (remote_debug),
5170 we have PBUFZIZ - 7 left to pack the query string */
5172 while (annex
[i
] && (i
< ((rs
->remote_packet_size
) - 8)))
5174 /* Bad caller may have sent forbidden characters. */
5175 gdb_assert (isprint (annex
[i
]) && annex
[i
] != '$' && annex
[i
] != '#');
5180 gdb_assert (annex
[i
] == '\0');
5186 getpkt (readbuf
, len
, 0);
5188 return strlen (readbuf
);
5192 remote_rcmd (char *command
,
5193 struct ui_file
*outbuf
)
5195 struct remote_state
*rs
= get_remote_state ();
5197 char *buf
= alloca (rs
->remote_packet_size
);
5201 error ("remote rcmd is only available after target open");
5203 /* Send a NULL command across as an empty command */
5204 if (command
== NULL
)
5207 /* The query prefix */
5208 strcpy (buf
, "qRcmd,");
5209 p
= strchr (buf
, '\0');
5211 if ((strlen (buf
) + strlen (command
) * 2 + 8/*misc*/) > (rs
->remote_packet_size
))
5212 error ("\"monitor\" command ``%s'' is too long\n", command
);
5214 /* Encode the actual command */
5215 bin2hex (command
, p
, 0);
5217 if (putpkt (buf
) < 0)
5218 error ("Communication problem with target\n");
5220 /* get/display the response */
5223 /* XXX - see also tracepoint.c:remote_get_noisy_reply() */
5225 getpkt (buf
, (rs
->remote_packet_size
), 0);
5227 error ("Target does not support this command\n");
5228 if (buf
[0] == 'O' && buf
[1] != 'K')
5230 remote_console_output (buf
+ 1); /* 'O' message from stub */
5233 if (strcmp (buf
, "OK") == 0)
5235 if (strlen (buf
) == 3 && buf
[0] == 'E'
5236 && isdigit (buf
[1]) && isdigit (buf
[2]))
5238 error ("Protocol error with Rcmd");
5240 for (p
= buf
; p
[0] != '\0' && p
[1] != '\0'; p
+= 2)
5242 char c
= (fromhex (p
[0]) << 4) + fromhex (p
[1]);
5243 fputc_unfiltered (c
, outbuf
);
5250 packet_command (char *args
, int from_tty
)
5252 struct remote_state
*rs
= get_remote_state ();
5253 char *buf
= alloca (rs
->remote_packet_size
);
5256 error ("command can only be used with remote target");
5259 error ("remote-packet command requires packet text as argument");
5261 puts_filtered ("sending: ");
5262 print_packet (args
);
5263 puts_filtered ("\n");
5266 getpkt (buf
, (rs
->remote_packet_size
), 0);
5267 puts_filtered ("received: ");
5269 puts_filtered ("\n");
5273 /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------------- */
5275 static void display_thread_info (struct gdb_ext_thread_info
*info
);
5277 static void threadset_test_cmd (char *cmd
, int tty
);
5279 static void threadalive_test (char *cmd
, int tty
);
5281 static void threadlist_test_cmd (char *cmd
, int tty
);
5283 int get_and_display_threadinfo (threadref
* ref
);
5285 static void threadinfo_test_cmd (char *cmd
, int tty
);
5287 static int thread_display_step (threadref
* ref
, void *context
);
5289 static void threadlist_update_test_cmd (char *cmd
, int tty
);
5291 static void init_remote_threadtests (void);
5293 #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid */
5296 threadset_test_cmd (char *cmd
, int tty
)
5298 int sample_thread
= SAMPLE_THREAD
;
5300 printf_filtered ("Remote threadset test\n");
5301 set_thread (sample_thread
, 1);
5306 threadalive_test (char *cmd
, int tty
)
5308 int sample_thread
= SAMPLE_THREAD
;
5310 if (remote_thread_alive (pid_to_ptid (sample_thread
)))
5311 printf_filtered ("PASS: Thread alive test\n");
5313 printf_filtered ("FAIL: Thread alive test\n");
5316 void output_threadid (char *title
, threadref
* ref
);
5319 output_threadid (char *title
, threadref
*ref
)
5323 pack_threadid (&hexid
[0], ref
); /* Convert threead id into hex */
5325 printf_filtered ("%s %s\n", title
, (&hexid
[0]));
5329 threadlist_test_cmd (char *cmd
, int tty
)
5332 threadref nextthread
;
5333 int done
, result_count
;
5334 threadref threadlist
[3];
5336 printf_filtered ("Remote Threadlist test\n");
5337 if (!remote_get_threadlist (startflag
, &nextthread
, 3, &done
,
5338 &result_count
, &threadlist
[0]))
5339 printf_filtered ("FAIL: threadlist test\n");
5342 threadref
*scan
= threadlist
;
5343 threadref
*limit
= scan
+ result_count
;
5345 while (scan
< limit
)
5346 output_threadid (" thread ", scan
++);
5351 display_thread_info (struct gdb_ext_thread_info
*info
)
5353 output_threadid ("Threadid: ", &info
->threadid
);
5354 printf_filtered ("Name: %s\n ", info
->shortname
);
5355 printf_filtered ("State: %s\n", info
->display
);
5356 printf_filtered ("other: %s\n\n", info
->more_display
);
5360 get_and_display_threadinfo (threadref
*ref
)
5364 struct gdb_ext_thread_info threadinfo
;
5366 set
= TAG_THREADID
| TAG_EXISTS
| TAG_THREADNAME
5367 | TAG_MOREDISPLAY
| TAG_DISPLAY
;
5368 if (0 != (result
= remote_get_threadinfo (ref
, set
, &threadinfo
)))
5369 display_thread_info (&threadinfo
);
5374 threadinfo_test_cmd (char *cmd
, int tty
)
5376 int athread
= SAMPLE_THREAD
;
5380 int_to_threadref (&thread
, athread
);
5381 printf_filtered ("Remote Threadinfo test\n");
5382 if (!get_and_display_threadinfo (&thread
))
5383 printf_filtered ("FAIL cannot get thread info\n");
5387 thread_display_step (threadref
*ref
, void *context
)
5389 /* output_threadid(" threadstep ",ref); *//* simple test */
5390 return get_and_display_threadinfo (ref
);
5394 threadlist_update_test_cmd (char *cmd
, int tty
)
5396 printf_filtered ("Remote Threadlist update test\n");
5397 remote_threadlist_iterator (thread_display_step
, 0, CRAZY_MAX_THREADS
);
5401 init_remote_threadtests (void)
5403 add_com ("tlist", class_obscure
, threadlist_test_cmd
,
5404 "Fetch and print the remote list of thread identifiers, one pkt only");
5405 add_com ("tinfo", class_obscure
, threadinfo_test_cmd
,
5406 "Fetch and display info about one thread");
5407 add_com ("tset", class_obscure
, threadset_test_cmd
,
5408 "Test setting to a different thread");
5409 add_com ("tupd", class_obscure
, threadlist_update_test_cmd
,
5410 "Iterate through updating all remote thread info");
5411 add_com ("talive", class_obscure
, threadalive_test
,
5412 " Remote thread alive test ");
5417 /* Convert a thread ID to a string. Returns the string in a static
5421 remote_pid_to_str (ptid_t ptid
)
5423 static char buf
[30];
5425 sprintf (buf
, "Thread %d", PIDGET (ptid
));
5430 init_remote_ops (void)
5432 remote_ops
.to_shortname
= "remote";
5433 remote_ops
.to_longname
= "Remote serial target in gdb-specific protocol";
5435 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
5436 Specify the serial device it is connected to\n\
5437 (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).";
5438 remote_ops
.to_open
= remote_open
;
5439 remote_ops
.to_close
= remote_close
;
5440 remote_ops
.to_detach
= remote_detach
;
5441 remote_ops
.to_disconnect
= remote_disconnect
;
5442 remote_ops
.to_resume
= remote_resume
;
5443 remote_ops
.to_wait
= remote_wait
;
5444 remote_ops
.to_fetch_registers
= remote_fetch_registers
;
5445 remote_ops
.to_store_registers
= remote_store_registers
;
5446 remote_ops
.to_prepare_to_store
= remote_prepare_to_store
;
5447 remote_ops
.to_xfer_memory
= remote_xfer_memory
;
5448 remote_ops
.to_files_info
= remote_files_info
;
5449 remote_ops
.to_insert_breakpoint
= remote_insert_breakpoint
;
5450 remote_ops
.to_remove_breakpoint
= remote_remove_breakpoint
;
5451 remote_ops
.to_stopped_by_watchpoint
= remote_stopped_by_watchpoint
;
5452 remote_ops
.to_stopped_data_address
= remote_stopped_data_address
;
5453 remote_ops
.to_can_use_hw_breakpoint
= remote_check_watch_resources
;
5454 remote_ops
.to_insert_hw_breakpoint
= remote_insert_hw_breakpoint
;
5455 remote_ops
.to_remove_hw_breakpoint
= remote_remove_hw_breakpoint
;
5456 remote_ops
.to_insert_watchpoint
= remote_insert_watchpoint
;
5457 remote_ops
.to_remove_watchpoint
= remote_remove_watchpoint
;
5458 remote_ops
.to_kill
= remote_kill
;
5459 remote_ops
.to_load
= generic_load
;
5460 remote_ops
.to_mourn_inferior
= remote_mourn
;
5461 remote_ops
.to_thread_alive
= remote_thread_alive
;
5462 remote_ops
.to_find_new_threads
= remote_threads_info
;
5463 remote_ops
.to_pid_to_str
= remote_pid_to_str
;
5464 remote_ops
.to_extra_thread_info
= remote_threads_extra_info
;
5465 remote_ops
.to_stop
= remote_stop
;
5466 remote_ops
.to_xfer_partial
= remote_xfer_partial
;
5467 remote_ops
.to_rcmd
= remote_rcmd
;
5468 remote_ops
.to_stratum
= process_stratum
;
5469 remote_ops
.to_has_all_memory
= 1;
5470 remote_ops
.to_has_memory
= 1;
5471 remote_ops
.to_has_stack
= 1;
5472 remote_ops
.to_has_registers
= 1;
5473 remote_ops
.to_has_execution
= 1;
5474 remote_ops
.to_has_thread_control
= tc_schedlock
; /* can lock scheduler */
5475 remote_ops
.to_magic
= OPS_MAGIC
;
5478 /* Set up the extended remote vector by making a copy of the standard
5479 remote vector and adding to it. */
5482 init_extended_remote_ops (void)
5484 extended_remote_ops
= remote_ops
;
5486 extended_remote_ops
.to_shortname
= "extended-remote";
5487 extended_remote_ops
.to_longname
=
5488 "Extended remote serial target in gdb-specific protocol";
5489 extended_remote_ops
.to_doc
=
5490 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
5491 Specify the serial device it is connected to (e.g. /dev/ttya).",
5492 extended_remote_ops
.to_open
= extended_remote_open
;
5493 extended_remote_ops
.to_create_inferior
= extended_remote_create_inferior
;
5494 extended_remote_ops
.to_mourn_inferior
= extended_remote_mourn
;
5498 * Command: info remote-process
5500 * This implements Cisco's version of the "info proc" command.
5502 * This query allows the target stub to return an arbitrary string
5503 * (or strings) giving arbitrary information about the target process.
5504 * This is optional; the target stub isn't required to implement it.
5506 * Syntax: qfProcessInfo request first string
5507 * qsProcessInfo request subsequent string
5508 * reply: 'O'<hex-encoded-string>
5509 * 'l' last reply (empty)
5513 remote_info_process (char *args
, int from_tty
)
5515 struct remote_state
*rs
= get_remote_state ();
5516 char *buf
= alloca (rs
->remote_packet_size
);
5518 if (remote_desc
== 0)
5519 error ("Command can only be used when connected to the remote target.");
5521 putpkt ("qfProcessInfo");
5522 getpkt (buf
, (rs
->remote_packet_size
), 0);
5524 return; /* Silently: target does not support this feature. */
5527 error ("info proc: target error.");
5529 while (buf
[0] == 'O') /* Capitol-O packet */
5531 remote_console_output (&buf
[1]);
5532 putpkt ("qsProcessInfo");
5533 getpkt (buf
, (rs
->remote_packet_size
), 0);
5542 remote_cisco_open (char *name
, int from_tty
)
5546 error ("To open a remote debug connection, you need to specify what \n"
5547 "device is attached to the remote system (e.g. host:port).");
5549 /* See FIXME above */
5550 wait_forever_enabled_p
= 1;
5552 target_preopen (from_tty
);
5554 unpush_target (&remote_cisco_ops
);
5556 remote_desc
= remote_serial_open (name
);
5558 perror_with_name (name
);
5561 * If a baud rate was specified on the gdb command line it will
5562 * be greater than the initial value of -1. If it is, use it otherwise
5566 baud_rate
= (baud_rate
> 0) ? baud_rate
: 9600;
5567 if (serial_setbaudrate (remote_desc
, baud_rate
))
5569 serial_close (remote_desc
);
5570 perror_with_name (name
);
5573 serial_raw (remote_desc
);
5575 /* If there is something sitting in the buffer we might take it as a
5576 response to a command, which would be bad. */
5577 serial_flush_input (remote_desc
);
5581 puts_filtered ("Remote debugging using ");
5582 puts_filtered (name
);
5583 puts_filtered ("\n");
5586 remote_cisco_mode
= 1;
5588 push_target (&remote_cisco_ops
); /* Switch to using cisco target now */
5590 init_all_packet_configs ();
5592 general_thread
= -2;
5593 continue_thread
= -2;
5595 /* Probe for ability to use "ThreadInfo" query, as required. */
5596 use_threadinfo_query
= 1;
5597 use_threadextra_query
= 1;
5599 /* Without this, some commands which require an active target (such
5600 as kill) won't work. This variable serves (at least) double duty
5601 as both the pid of the target process (if it has such), and as a
5602 flag indicating that a target is active. These functions should
5603 be split out into seperate variables, especially since GDB will
5604 someday have a notion of debugging several processes. */
5605 inferior_ptid
= pid_to_ptid (MAGIC_NULL_PID
);
5607 /* Start the remote connection; if error, discard this target. See
5608 the comments in remote_open_1() for further details such as the
5609 need to re-throw the exception. */
5610 ex
= catch_exceptions (uiout
,
5611 remote_start_remote_dummy
, NULL
,
5612 "Couldn't establish connection to remote"
5618 throw_exception (ex
);
5623 remote_cisco_close (int quitting
)
5625 remote_cisco_mode
= 0;
5626 remote_close (quitting
);
5630 remote_cisco_mourn (void)
5632 remote_mourn_1 (&remote_cisco_ops
);
5644 /* Shared between readsocket() and readtty(). The size is arbitrary,
5645 however all targets are known to support a 400 character packet. */
5646 static char tty_input
[400];
5648 static int escape_count
;
5649 static int echo_check
;
5650 extern int quit_flag
;
5657 /* Loop until the socket doesn't have any more data */
5659 while ((data
= readchar (0)) >= 0)
5661 /* Check for the escape sequence */
5664 /* If this is the fourth escape, get out */
5665 if (++escape_count
== 4)
5670 { /* This is a '|', but not the fourth in a row.
5671 Continue without echoing it. If it isn't actually
5672 one of four in a row, it'll be echoed later. */
5679 /* Ensure any pending '|'s are flushed. */
5681 for (; escape_count
> 0; escape_count
--)
5685 if (data
== '\r') /* If this is a return character, */
5686 continue; /* - just supress it. */
5688 if (echo_check
!= -1) /* Check for echo of user input. */
5690 if (tty_input
[echo_check
] == data
)
5692 gdb_assert (echo_check
<= sizeof (tty_input
));
5693 echo_check
++; /* Character matched user input: */
5694 continue; /* Continue without echoing it. */
5696 else if ((data
== '\n') && (tty_input
[echo_check
] == '\r'))
5697 { /* End of the line (and of echo checking). */
5698 echo_check
= -1; /* No more echo supression */
5699 continue; /* Continue without echoing. */
5702 { /* Failed check for echo of user input.
5703 We now have some suppressed output to flush! */
5706 for (j
= 0; j
< echo_check
; j
++)
5707 putchar (tty_input
[j
]);
5711 putchar (data
); /* Default case: output the char. */
5714 if (data
== SERIAL_TIMEOUT
) /* Timeout returned from readchar. */
5715 return READ_MORE
; /* Try to read some more */
5717 return FATAL_ERROR
; /* Trouble, bail out */
5725 /* First, read a buffer full from the terminal */
5726 tty_bytecount
= read (fileno (stdin
), tty_input
, sizeof (tty_input
) - 1);
5727 if (tty_bytecount
== -1)
5729 perror ("readtty: read failed");
5733 /* Remove a quoted newline. */
5734 if (tty_input
[tty_bytecount
- 1] == '\n' &&
5735 tty_input
[tty_bytecount
- 2] == '\\') /* line ending in backslash */
5737 tty_input
[--tty_bytecount
] = 0; /* remove newline */
5738 tty_input
[--tty_bytecount
] = 0; /* remove backslash */
5741 /* Turn trailing newlines into returns */
5742 if (tty_input
[tty_bytecount
- 1] == '\n')
5743 tty_input
[tty_bytecount
- 1] = '\r';
5745 /* If the line consists of a ~, enter debugging mode. */
5746 if ((tty_input
[0] == '~') && (tty_bytecount
== 2))
5749 /* Make this a zero terminated string and write it out */
5750 tty_input
[tty_bytecount
] = 0;
5751 if (serial_write (remote_desc
, tty_input
, tty_bytecount
))
5753 perror_with_name ("readtty: write failed");
5763 fd_set input
; /* file descriptors for select */
5764 int tablesize
; /* max number of FDs for select */
5771 tablesize
= 8 * sizeof (input
);
5775 /* Check for anything from our socket - doesn't block. Note that
5776 this must be done *before* the select as there may be
5777 buffered I/O waiting to be processed. */
5779 if ((status
= readsocket ()) == FATAL_ERROR
)
5781 error ("Debugging terminated by communications error");
5783 else if (status
!= READ_MORE
)
5788 fflush (stdout
); /* Flush output before blocking */
5790 /* Now block on more socket input or TTY input */
5793 FD_SET (fileno (stdin
), &input
);
5794 FD_SET (deprecated_serial_fd (remote_desc
), &input
);
5796 status
= select (tablesize
, &input
, 0, 0, 0);
5797 if ((status
== -1) && (errno
!= EINTR
))
5799 error ("Communications error on select %d", errno
);
5802 /* Handle Control-C typed */
5806 if ((++quit_count
) == 2)
5808 if (query ("Interrupt GDB? "))
5810 printf_filtered ("Interrupted by user.\n");
5811 throw_exception (RETURN_QUIT
);
5818 serial_send_break (remote_desc
);
5820 serial_write (remote_desc
, "\003", 1);
5825 /* Handle console input */
5827 if (FD_ISSET (fileno (stdin
), &input
))
5831 status
= readtty ();
5832 if (status
== READ_MORE
)
5835 return status
; /* telnet session ended */
5841 remote_cisco_wait (ptid_t ptid
, struct target_waitstatus
*status
)
5843 if (minitelnet () != ENTER_DEBUG
)
5845 error ("Debugging session terminated by protocol error");
5848 return remote_wait (ptid
, status
);
5852 init_remote_cisco_ops (void)
5854 remote_cisco_ops
.to_shortname
= "cisco";
5855 remote_cisco_ops
.to_longname
= "Remote serial target in cisco-specific protocol";
5856 remote_cisco_ops
.to_doc
=
5857 "Use a remote machine via TCP, using a cisco-specific protocol.\n\
5858 Specify the serial device it is connected to (e.g. host:2020).";
5859 remote_cisco_ops
.to_open
= remote_cisco_open
;
5860 remote_cisco_ops
.to_close
= remote_cisco_close
;
5861 remote_cisco_ops
.to_detach
= remote_detach
;
5862 remote_cisco_ops
.to_disconnect
= remote_disconnect
;
5863 remote_cisco_ops
.to_resume
= remote_resume
;
5864 remote_cisco_ops
.to_wait
= remote_cisco_wait
;
5865 remote_cisco_ops
.to_fetch_registers
= remote_fetch_registers
;
5866 remote_cisco_ops
.to_store_registers
= remote_store_registers
;
5867 remote_cisco_ops
.to_prepare_to_store
= remote_prepare_to_store
;
5868 remote_cisco_ops
.to_xfer_memory
= remote_xfer_memory
;
5869 remote_cisco_ops
.to_files_info
= remote_files_info
;
5870 remote_cisco_ops
.to_insert_breakpoint
= remote_insert_breakpoint
;
5871 remote_cisco_ops
.to_remove_breakpoint
= remote_remove_breakpoint
;
5872 remote_cisco_ops
.to_remove_hw_breakpoint
= remote_remove_hw_breakpoint
;
5873 remote_cisco_ops
.to_insert_hw_breakpoint
= remote_insert_hw_breakpoint
;
5874 remote_cisco_ops
.to_insert_watchpoint
= remote_insert_watchpoint
;
5875 remote_cisco_ops
.to_remove_watchpoint
= remote_remove_watchpoint
;
5876 remote_cisco_ops
.to_stopped_by_watchpoint
= remote_stopped_by_watchpoint
;
5877 remote_cisco_ops
.to_stopped_data_address
= remote_stopped_data_address
;
5878 remote_cisco_ops
.to_can_use_hw_breakpoint
= remote_check_watch_resources
;
5879 remote_cisco_ops
.to_kill
= remote_kill
;
5880 remote_cisco_ops
.to_load
= generic_load
;
5881 remote_cisco_ops
.to_mourn_inferior
= remote_cisco_mourn
;
5882 remote_cisco_ops
.to_thread_alive
= remote_thread_alive
;
5883 remote_cisco_ops
.to_find_new_threads
= remote_threads_info
;
5884 remote_cisco_ops
.to_pid_to_str
= remote_pid_to_str
;
5885 remote_cisco_ops
.to_extra_thread_info
= remote_threads_extra_info
;
5886 remote_cisco_ops
.to_stratum
= process_stratum
;
5887 remote_cisco_ops
.to_has_all_memory
= 1;
5888 remote_cisco_ops
.to_has_memory
= 1;
5889 remote_cisco_ops
.to_has_stack
= 1;
5890 remote_cisco_ops
.to_has_registers
= 1;
5891 remote_cisco_ops
.to_has_execution
= 1;
5892 remote_cisco_ops
.to_magic
= OPS_MAGIC
;
5896 remote_can_async_p (void)
5898 /* We're async whenever the serial device is. */
5899 return (current_target
.to_async_mask_value
) && serial_can_async_p (remote_desc
);
5903 remote_is_async_p (void)
5905 /* We're async whenever the serial device is. */
5906 return (current_target
.to_async_mask_value
) && serial_is_async_p (remote_desc
);
5909 /* Pass the SERIAL event on and up to the client. One day this code
5910 will be able to delay notifying the client of an event until the
5911 point where an entire packet has been received. */
5913 static void (*async_client_callback
) (enum inferior_event_type event_type
, void *context
);
5914 static void *async_client_context
;
5915 static serial_event_ftype remote_async_serial_handler
;
5918 remote_async_serial_handler (struct serial
*scb
, void *context
)
5920 /* Don't propogate error information up to the client. Instead let
5921 the client find out about the error by querying the target. */
5922 async_client_callback (INF_REG_EVENT
, async_client_context
);
5926 remote_async (void (*callback
) (enum inferior_event_type event_type
, void *context
), void *context
)
5928 if (current_target
.to_async_mask_value
== 0)
5929 internal_error (__FILE__
, __LINE__
,
5930 "Calling remote_async when async is masked");
5932 if (callback
!= NULL
)
5934 serial_async (remote_desc
, remote_async_serial_handler
, NULL
);
5935 async_client_callback
= callback
;
5936 async_client_context
= context
;
5939 serial_async (remote_desc
, NULL
, NULL
);
5942 /* Target async and target extended-async.
5944 This are temporary targets, until it is all tested. Eventually
5945 async support will be incorporated int the usual 'remote'
5949 init_remote_async_ops (void)
5951 remote_async_ops
.to_shortname
= "async";
5952 remote_async_ops
.to_longname
= "Remote serial target in async version of the gdb-specific protocol";
5953 remote_async_ops
.to_doc
=
5954 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
5955 Specify the serial device it is connected to (e.g. /dev/ttya).";
5956 remote_async_ops
.to_open
= remote_async_open
;
5957 remote_async_ops
.to_close
= remote_close
;
5958 remote_async_ops
.to_detach
= remote_detach
;
5959 remote_async_ops
.to_disconnect
= remote_disconnect
;
5960 remote_async_ops
.to_resume
= remote_async_resume
;
5961 remote_async_ops
.to_wait
= remote_async_wait
;
5962 remote_async_ops
.to_fetch_registers
= remote_fetch_registers
;
5963 remote_async_ops
.to_store_registers
= remote_store_registers
;
5964 remote_async_ops
.to_prepare_to_store
= remote_prepare_to_store
;
5965 remote_async_ops
.to_xfer_memory
= remote_xfer_memory
;
5966 remote_async_ops
.to_files_info
= remote_files_info
;
5967 remote_async_ops
.to_insert_breakpoint
= remote_insert_breakpoint
;
5968 remote_async_ops
.to_remove_breakpoint
= remote_remove_breakpoint
;
5969 remote_async_ops
.to_can_use_hw_breakpoint
= remote_check_watch_resources
;
5970 remote_async_ops
.to_insert_hw_breakpoint
= remote_insert_hw_breakpoint
;
5971 remote_async_ops
.to_remove_hw_breakpoint
= remote_remove_hw_breakpoint
;
5972 remote_async_ops
.to_insert_watchpoint
= remote_insert_watchpoint
;
5973 remote_async_ops
.to_remove_watchpoint
= remote_remove_watchpoint
;
5974 remote_async_ops
.to_stopped_by_watchpoint
= remote_stopped_by_watchpoint
;
5975 remote_async_ops
.to_stopped_data_address
= remote_stopped_data_address
;
5976 remote_async_ops
.to_terminal_inferior
= remote_async_terminal_inferior
;
5977 remote_async_ops
.to_terminal_ours
= remote_async_terminal_ours
;
5978 remote_async_ops
.to_kill
= remote_async_kill
;
5979 remote_async_ops
.to_load
= generic_load
;
5980 remote_async_ops
.to_mourn_inferior
= remote_async_mourn
;
5981 remote_async_ops
.to_thread_alive
= remote_thread_alive
;
5982 remote_async_ops
.to_find_new_threads
= remote_threads_info
;
5983 remote_async_ops
.to_pid_to_str
= remote_pid_to_str
;
5984 remote_async_ops
.to_extra_thread_info
= remote_threads_extra_info
;
5985 remote_async_ops
.to_stop
= remote_stop
;
5986 remote_async_ops
.to_xfer_partial
= remote_xfer_partial
;
5987 remote_async_ops
.to_rcmd
= remote_rcmd
;
5988 remote_async_ops
.to_stratum
= process_stratum
;
5989 remote_async_ops
.to_has_all_memory
= 1;
5990 remote_async_ops
.to_has_memory
= 1;
5991 remote_async_ops
.to_has_stack
= 1;
5992 remote_async_ops
.to_has_registers
= 1;
5993 remote_async_ops
.to_has_execution
= 1;
5994 remote_async_ops
.to_has_thread_control
= tc_schedlock
; /* can lock scheduler */
5995 remote_async_ops
.to_can_async_p
= remote_can_async_p
;
5996 remote_async_ops
.to_is_async_p
= remote_is_async_p
;
5997 remote_async_ops
.to_async
= remote_async
;
5998 remote_async_ops
.to_async_mask_value
= 1;
5999 remote_async_ops
.to_magic
= OPS_MAGIC
;
6002 /* Set up the async extended remote vector by making a copy of the standard
6003 remote vector and adding to it. */
6006 init_extended_async_remote_ops (void)
6008 extended_async_remote_ops
= remote_async_ops
;
6010 extended_async_remote_ops
.to_shortname
= "extended-async";
6011 extended_async_remote_ops
.to_longname
=
6012 "Extended remote serial target in async gdb-specific protocol";
6013 extended_async_remote_ops
.to_doc
=
6014 "Use a remote computer via a serial line, using an async gdb-specific protocol.\n\
6015 Specify the serial device it is connected to (e.g. /dev/ttya).",
6016 extended_async_remote_ops
.to_open
= extended_remote_async_open
;
6017 extended_async_remote_ops
.to_create_inferior
= extended_remote_async_create_inferior
;
6018 extended_async_remote_ops
.to_mourn_inferior
= extended_remote_mourn
;
6022 set_remote_cmd (char *args
, int from_tty
)
6027 show_remote_cmd (char *args
, int from_tty
)
6029 /* FIXME: cagney/2002-06-15: This function should iterate over
6030 remote_show_cmdlist for a list of sub commands to show. */
6031 show_remote_protocol_Z_packet_cmd (args
, from_tty
, NULL
);
6032 show_remote_protocol_e_packet_cmd (args
, from_tty
, NULL
);
6033 show_remote_protocol_E_packet_cmd (args
, from_tty
, NULL
);
6034 show_remote_protocol_P_packet_cmd (args
, from_tty
, NULL
);
6035 show_remote_protocol_qSymbol_packet_cmd (args
, from_tty
, NULL
);
6036 show_remote_protocol_vcont_packet_cmd (args
, from_tty
, NULL
);
6037 show_remote_protocol_binary_download_cmd (args
, from_tty
, NULL
);
6041 build_remote_gdbarch_data (void)
6043 remote_address_size
= TARGET_ADDR_BIT
;
6046 /* Saved pointer to previous owner of the new_objfile event. */
6047 static void (*remote_new_objfile_chain
) (struct objfile
*);
6049 /* Function to be called whenever a new objfile (shlib) is detected. */
6051 remote_new_objfile (struct objfile
*objfile
)
6053 if (remote_desc
!= 0) /* Have a remote connection */
6055 remote_check_symbols (objfile
);
6057 /* Call predecessor on chain, if any. */
6058 if (remote_new_objfile_chain
!= 0 &&
6060 remote_new_objfile_chain (objfile
);
6064 _initialize_remote (void)
6066 static struct cmd_list_element
*remote_set_cmdlist
;
6067 static struct cmd_list_element
*remote_show_cmdlist
;
6068 struct cmd_list_element
*tmpcmd
;
6070 /* architecture specific data */
6071 remote_gdbarch_data_handle
= register_gdbarch_data (init_remote_state
);
6073 /* Old tacky stuff. NOTE: This comes after the remote protocol so
6074 that the remote protocol has been initialized. */
6075 register_gdbarch_swap (&remote_address_size
,
6076 sizeof (&remote_address_size
), NULL
);
6077 register_gdbarch_swap (NULL
, 0, build_remote_gdbarch_data
);
6080 add_target (&remote_ops
);
6082 init_extended_remote_ops ();
6083 add_target (&extended_remote_ops
);
6085 init_remote_async_ops ();
6086 add_target (&remote_async_ops
);
6088 init_extended_async_remote_ops ();
6089 add_target (&extended_async_remote_ops
);
6091 init_remote_cisco_ops ();
6092 add_target (&remote_cisco_ops
);
6094 /* Hook into new objfile notification. */
6095 remote_new_objfile_chain
= target_new_objfile_hook
;
6096 target_new_objfile_hook
= remote_new_objfile
;
6099 init_remote_threadtests ();
6102 /* set/show remote ... */
6104 add_prefix_cmd ("remote", class_maintenance
, set_remote_cmd
, "\
6105 Remote protocol specific variables\n\
6106 Configure various remote-protocol specific variables such as\n\
6107 the packets being used",
6108 &remote_set_cmdlist
, "set remote ",
6109 0/*allow-unknown*/, &setlist
);
6110 add_prefix_cmd ("remote", class_maintenance
, show_remote_cmd
, "\
6111 Remote protocol specific variables\n\
6112 Configure various remote-protocol specific variables such as\n\
6113 the packets being used",
6114 &remote_show_cmdlist
, "show remote ",
6115 0/*allow-unknown*/, &showlist
);
6117 add_cmd ("compare-sections", class_obscure
, compare_sections_command
,
6118 "Compare section data on target to the exec file.\n\
6119 Argument is a single section name (default: all loaded sections).",
6122 add_cmd ("packet", class_maintenance
, packet_command
,
6123 "Send an arbitrary packet to a remote target.\n\
6124 maintenance packet TEXT\n\
6125 If GDB is talking to an inferior via the GDB serial protocol, then\n\
6126 this command sends the string TEXT to the inferior, and displays the\n\
6127 response packet. GDB supplies the initial `$' character, and the\n\
6128 terminating `#' character and checksum.",
6131 add_setshow_boolean_cmd ("remotebreak", no_class
, &remote_break
,
6132 "Set whether to send break if interrupted.\n",
6133 "Show whether to send break if interrupted.\n",
6135 &setlist
, &showlist
);
6137 /* Install commands for configuring memory read/write packets. */
6139 add_cmd ("remotewritesize", no_class
, set_memory_write_packet_size
,
6140 "Set the maximum number of bytes per memory write packet (deprecated).\n",
6142 add_cmd ("remotewritesize", no_class
, show_memory_write_packet_size
,
6143 "Show the maximum number of bytes per memory write packet (deprecated).\n",
6145 add_cmd ("memory-write-packet-size", no_class
,
6146 set_memory_write_packet_size
,
6147 "Set the maximum number of bytes per memory-write packet.\n"
6148 "Specify the number of bytes in a packet or 0 (zero) for the\n"
6149 "default packet size. The actual limit is further reduced\n"
6150 "dependent on the target. Specify ``fixed'' to disable the\n"
6151 "further restriction and ``limit'' to enable that restriction\n",
6152 &remote_set_cmdlist
);
6153 add_cmd ("memory-read-packet-size", no_class
,
6154 set_memory_read_packet_size
,
6155 "Set the maximum number of bytes per memory-read packet.\n"
6156 "Specify the number of bytes in a packet or 0 (zero) for the\n"
6157 "default packet size. The actual limit is further reduced\n"
6158 "dependent on the target. Specify ``fixed'' to disable the\n"
6159 "further restriction and ``limit'' to enable that restriction\n",
6160 &remote_set_cmdlist
);
6161 add_cmd ("memory-write-packet-size", no_class
,
6162 show_memory_write_packet_size
,
6163 "Show the maximum number of bytes per memory-write packet.\n",
6164 &remote_show_cmdlist
);
6165 add_cmd ("memory-read-packet-size", no_class
,
6166 show_memory_read_packet_size
,
6167 "Show the maximum number of bytes per memory-read packet.\n",
6168 &remote_show_cmdlist
);
6170 add_setshow_cmd ("hardware-watchpoint-limit", no_class
,
6171 var_zinteger
, &remote_hw_watchpoint_limit
, "\
6172 Set the maximum number of target hardware watchpoints.\n\
6173 Specify a negative limit for unlimited.", "\
6174 Show the maximum number of target hardware watchpoints.\n",
6175 NULL
, NULL
, &remote_set_cmdlist
, &remote_show_cmdlist
);
6176 add_setshow_cmd ("hardware-breakpoint-limit", no_class
,
6177 var_zinteger
, &remote_hw_breakpoint_limit
, "\
6178 Set the maximum number of target hardware breakpoints.\n\
6179 Specify a negative limit for unlimited.", "\
6180 Show the maximum number of target hardware breakpoints.\n",
6181 NULL
, NULL
, &remote_set_cmdlist
, &remote_show_cmdlist
);
6184 (add_set_cmd ("remoteaddresssize", class_obscure
,
6185 var_integer
, (char *) &remote_address_size
,
6186 "Set the maximum size of the address (in bits) \
6187 in a memory packet.\n",
6191 add_packet_config_cmd (&remote_protocol_binary_download
,
6192 "X", "binary-download",
6193 set_remote_protocol_binary_download_cmd
,
6194 show_remote_protocol_binary_download_cmd
,
6195 &remote_set_cmdlist
, &remote_show_cmdlist
,
6198 /* XXXX - should ``set remotebinarydownload'' be retained for
6201 (add_set_cmd ("remotebinarydownload", no_class
,
6202 var_boolean
, (char *) &remote_binary_download
,
6203 "Set binary downloads.\n", &setlist
),
6207 add_info ("remote-process", remote_info_process
,
6208 "Query the remote system for process info.");
6210 add_packet_config_cmd (&remote_protocol_vcont
,
6211 "vCont", "verbose-resume",
6212 set_remote_protocol_vcont_packet_cmd
,
6213 show_remote_protocol_vcont_packet_cmd
,
6214 &remote_set_cmdlist
, &remote_show_cmdlist
,
6217 add_packet_config_cmd (&remote_protocol_qSymbol
,
6218 "qSymbol", "symbol-lookup",
6219 set_remote_protocol_qSymbol_packet_cmd
,
6220 show_remote_protocol_qSymbol_packet_cmd
,
6221 &remote_set_cmdlist
, &remote_show_cmdlist
,
6224 add_packet_config_cmd (&remote_protocol_e
,
6225 "e", "step-over-range",
6226 set_remote_protocol_e_packet_cmd
,
6227 show_remote_protocol_e_packet_cmd
,
6228 &remote_set_cmdlist
, &remote_show_cmdlist
,
6230 /* Disable by default. The ``e'' packet has nasty interactions with
6231 the threading code - it relies on global state. */
6232 remote_protocol_e
.detect
= AUTO_BOOLEAN_FALSE
;
6233 update_packet_config (&remote_protocol_e
);
6235 add_packet_config_cmd (&remote_protocol_E
,
6236 "E", "step-over-range-w-signal",
6237 set_remote_protocol_E_packet_cmd
,
6238 show_remote_protocol_E_packet_cmd
,
6239 &remote_set_cmdlist
, &remote_show_cmdlist
,
6241 /* Disable by default. The ``e'' packet has nasty interactions with
6242 the threading code - it relies on global state. */
6243 remote_protocol_E
.detect
= AUTO_BOOLEAN_FALSE
;
6244 update_packet_config (&remote_protocol_E
);
6246 add_packet_config_cmd (&remote_protocol_P
,
6247 "P", "set-register",
6248 set_remote_protocol_P_packet_cmd
,
6249 show_remote_protocol_P_packet_cmd
,
6250 &remote_set_cmdlist
, &remote_show_cmdlist
,
6253 add_packet_config_cmd (&remote_protocol_Z
[Z_PACKET_SOFTWARE_BP
],
6254 "Z0", "software-breakpoint",
6255 set_remote_protocol_Z_software_bp_packet_cmd
,
6256 show_remote_protocol_Z_software_bp_packet_cmd
,
6257 &remote_set_cmdlist
, &remote_show_cmdlist
,
6260 add_packet_config_cmd (&remote_protocol_Z
[Z_PACKET_HARDWARE_BP
],
6261 "Z1", "hardware-breakpoint",
6262 set_remote_protocol_Z_hardware_bp_packet_cmd
,
6263 show_remote_protocol_Z_hardware_bp_packet_cmd
,
6264 &remote_set_cmdlist
, &remote_show_cmdlist
,
6267 add_packet_config_cmd (&remote_protocol_Z
[Z_PACKET_WRITE_WP
],
6268 "Z2", "write-watchpoint",
6269 set_remote_protocol_Z_write_wp_packet_cmd
,
6270 show_remote_protocol_Z_write_wp_packet_cmd
,
6271 &remote_set_cmdlist
, &remote_show_cmdlist
,
6274 add_packet_config_cmd (&remote_protocol_Z
[Z_PACKET_READ_WP
],
6275 "Z3", "read-watchpoint",
6276 set_remote_protocol_Z_read_wp_packet_cmd
,
6277 show_remote_protocol_Z_read_wp_packet_cmd
,
6278 &remote_set_cmdlist
, &remote_show_cmdlist
,
6281 add_packet_config_cmd (&remote_protocol_Z
[Z_PACKET_ACCESS_WP
],
6282 "Z4", "access-watchpoint",
6283 set_remote_protocol_Z_access_wp_packet_cmd
,
6284 show_remote_protocol_Z_access_wp_packet_cmd
,
6285 &remote_set_cmdlist
, &remote_show_cmdlist
,
6288 /* Keep the old ``set remote Z-packet ...'' working. */
6289 add_setshow_auto_boolean_cmd ("Z-packet", class_obscure
,
6290 &remote_Z_packet_detect
, "\
6291 Set use of remote protocol `Z' packets",
6292 "Show use of remote protocol `Z' packets ",
6293 set_remote_protocol_Z_packet_cmd
,
6294 show_remote_protocol_Z_packet_cmd
,
6295 &remote_set_cmdlist
, &remote_show_cmdlist
);
6297 /* Eventually initialize fileio. See fileio.c */
6298 initialize_remote_fileio (remote_set_cmdlist
, remote_show_cmdlist
);