1 /* Remote target communications for serial-line targets in custom GDB protocol
3 Copyright (C) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997,
4 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
5 Free Software Foundation, Inc.
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>. */
22 /* See the GDB User Guide for details of the GDB remote protocol. */
25 #include "gdb_string.h"
31 #include "exceptions.h"
33 /*#include "terminal.h" */
36 #include "gdb-stabs.h"
37 #include "gdbthread.h"
41 #include "gdb_assert.h"
44 #include "cli/cli-decode.h"
45 #include "cli/cli-setshow.h"
46 #include "target-descriptions.h"
51 #include "event-loop.h"
52 #include "event-top.h"
58 #include "gdbcore.h" /* for exec_bfd */
60 #include "remote-fileio.h"
61 #include "gdb/fileio.h"
63 #include "memory-map.h"
65 /* The size to align memory write packets, when practical. The protocol
66 does not guarantee any alignment, and gdb will generate short
67 writes and unaligned writes, but even as a best-effort attempt this
68 can improve bulk transfers. For instance, if a write is misaligned
69 relative to the target's data bus, the stub may need to make an extra
70 round trip fetching data from the target. This doesn't make a
71 huge difference, but it's easy to do, so we try to be helpful.
73 The alignment chosen is arbitrary; usually data bus width is
74 important here, not the possibly larger cache line size. */
75 enum { REMOTE_ALIGN_WRITES
= 16 };
77 /* Prototypes for local functions. */
78 static void cleanup_sigint_signal_handler (void *dummy
);
79 static void initialize_sigint_signal_handler (void);
80 static int getpkt_sane (char **buf
, long *sizeof_buf
, int forever
);
82 static void handle_remote_sigint (int);
83 static void handle_remote_sigint_twice (int);
84 static void async_remote_interrupt (gdb_client_data
);
85 void async_remote_interrupt_twice (gdb_client_data
);
87 static void remote_files_info (struct target_ops
*ignore
);
89 static void remote_prepare_to_store (struct regcache
*regcache
);
91 static void remote_fetch_registers (struct regcache
*regcache
, int regno
);
93 static void remote_resume (ptid_t ptid
, int step
,
94 enum target_signal siggnal
);
95 static void remote_open (char *name
, int from_tty
);
97 static void extended_remote_open (char *name
, int from_tty
);
99 static void remote_open_1 (char *, int, struct target_ops
*, int extended_p
);
101 static void remote_close (int quitting
);
103 static void remote_store_registers (struct regcache
*regcache
, int regno
);
105 static void remote_mourn (void);
107 static void extended_remote_restart (void);
109 static void extended_remote_mourn (void);
111 static void remote_mourn_1 (struct target_ops
*);
113 static void remote_send (char **buf
, long *sizeof_buf_p
);
115 static int readchar (int timeout
);
117 static ptid_t
remote_wait (ptid_t ptid
,
118 struct target_waitstatus
*status
);
120 static void remote_kill (void);
122 static int tohex (int nib
);
124 static int remote_can_async_p (void);
126 static int remote_is_async_p (void);
128 static void remote_async (void (*callback
) (enum inferior_event_type event_type
,
129 void *context
), void *context
);
131 static int remote_async_mask (int new_mask
);
133 static void remote_detach (char *args
, int from_tty
);
135 static void remote_interrupt (int signo
);
137 static void remote_interrupt_twice (int signo
);
139 static void interrupt_query (void);
141 static void set_thread (int, int);
143 static int remote_thread_alive (ptid_t
);
145 static void get_offsets (void);
147 static void skip_frame (void);
149 static long read_frame (char **buf_p
, long *sizeof_buf
);
151 static int hexnumlen (ULONGEST num
);
153 static void init_remote_ops (void);
155 static void init_extended_remote_ops (void);
157 static void remote_stop (void);
159 static int ishex (int ch
, int *val
);
161 static int stubhex (int ch
);
163 static int hexnumstr (char *, ULONGEST
);
165 static int hexnumnstr (char *, ULONGEST
, int);
167 static CORE_ADDR
remote_address_masked (CORE_ADDR
);
169 static void print_packet (char *);
171 static unsigned long crc32 (unsigned char *, int, unsigned int);
173 static void compare_sections_command (char *, int);
175 static void packet_command (char *, int);
177 static int stub_unpack_int (char *buff
, int fieldlength
);
179 static ptid_t
remote_current_thread (ptid_t oldptid
);
181 static void remote_find_new_threads (void);
183 static void record_currthread (int currthread
);
185 static int fromhex (int a
);
187 static int hex2bin (const char *hex
, gdb_byte
*bin
, int count
);
189 static int bin2hex (const gdb_byte
*bin
, char *hex
, int count
);
191 static int putpkt_binary (char *buf
, int cnt
);
193 static void check_binary_download (CORE_ADDR addr
);
195 struct packet_config
;
197 static void show_packet_config_cmd (struct packet_config
*config
);
199 static void update_packet_config (struct packet_config
*config
);
201 static void set_remote_protocol_packet_cmd (char *args
, int from_tty
,
202 struct cmd_list_element
*c
);
204 static void show_remote_protocol_packet_cmd (struct ui_file
*file
,
206 struct cmd_list_element
*c
,
209 void _initialize_remote (void);
211 /* Controls if async mode is permitted. */
212 static int remote_async_permitted
= 0;
214 static int remote_async_permitted_set
= 0;
217 set_maintenance_remote_async_permitted (char *args
, int from_tty
,
218 struct cmd_list_element
*c
)
220 if (target_has_execution
)
222 remote_async_permitted_set
= remote_async_permitted
; /* revert */
223 error (_("Cannot change this setting while the inferior is running."));
226 remote_async_permitted
= remote_async_permitted_set
;
230 show_maintenance_remote_async_permitted (struct ui_file
*file
, int from_tty
,
231 struct cmd_list_element
*c
, const char *value
)
233 fprintf_filtered (file
, _("\
234 Controlling the remote inferior in asynchronous mode is %s.\n"),
240 static struct cmd_list_element
*remote_cmdlist
;
242 /* For "set remote" and "show remote". */
244 static struct cmd_list_element
*remote_set_cmdlist
;
245 static struct cmd_list_element
*remote_show_cmdlist
;
247 /* Description of the remote protocol state for the currently
248 connected target. This is per-target state, and independent of the
249 selected architecture. */
253 /* A buffer to use for incoming packets, and its current size. The
254 buffer is grown dynamically for larger incoming packets.
255 Outgoing packets may also be constructed in this buffer.
256 BUF_SIZE is always at least REMOTE_PACKET_SIZE;
257 REMOTE_PACKET_SIZE should be used to limit the length of outgoing
262 /* If we negotiated packet size explicitly (and thus can bypass
263 heuristics for the largest packet size that will not overflow
264 a buffer in the stub), this will be set to that packet size.
265 Otherwise zero, meaning to use the guessed size. */
266 long explicit_packet_size
;
268 /* remote_wait is normally called when the target is running and
269 waits for a stop reply packet. But sometimes we need to call it
270 when the target is already stopped. We can send a "?" packet
271 and have remote_wait read the response. Or, if we already have
272 the response, we can stash it in BUF and tell remote_wait to
273 skip calling getpkt. This flag is set when BUF contains a
274 stop reply packet and the target is not waiting. */
275 int cached_wait_status
;
278 /* This data could be associated with a target, but we do not always
279 have access to the current target when we need it, so for now it is
280 static. This will be fine for as long as only one target is in use
282 static struct remote_state remote_state
;
284 static struct remote_state
*
285 get_remote_state_raw (void)
287 return &remote_state
;
290 /* Description of the remote protocol for a given architecture. */
294 long offset
; /* Offset into G packet. */
295 long regnum
; /* GDB's internal register number. */
296 LONGEST pnum
; /* Remote protocol register number. */
297 int in_g_packet
; /* Always part of G packet. */
298 /* long size in bytes; == register_size (current_gdbarch, regnum);
300 /* char *name; == gdbarch_register_name (current_gdbarch, regnum);
304 struct remote_arch_state
306 /* Description of the remote protocol registers. */
307 long sizeof_g_packet
;
309 /* Description of the remote protocol registers indexed by REGNUM
310 (making an array gdbarch_num_regs in size). */
311 struct packet_reg
*regs
;
313 /* This is the size (in chars) of the first response to the ``g''
314 packet. It is used as a heuristic when determining the maximum
315 size of memory-read and memory-write packets. A target will
316 typically only reserve a buffer large enough to hold the ``g''
317 packet. The size does not include packet overhead (headers and
319 long actual_register_packet_size
;
321 /* This is the maximum size (in chars) of a non read/write packet.
322 It is also used as a cap on the size of read/write packets. */
323 long remote_packet_size
;
327 /* Handle for retreving the remote protocol data from gdbarch. */
328 static struct gdbarch_data
*remote_gdbarch_data_handle
;
330 static struct remote_arch_state
*
331 get_remote_arch_state (void)
333 return gdbarch_data (current_gdbarch
, remote_gdbarch_data_handle
);
336 /* Fetch the global remote target state. */
338 static struct remote_state
*
339 get_remote_state (void)
341 /* Make sure that the remote architecture state has been
342 initialized, because doing so might reallocate rs->buf. Any
343 function which calls getpkt also needs to be mindful of changes
344 to rs->buf, but this call limits the number of places which run
346 get_remote_arch_state ();
348 return get_remote_state_raw ();
352 compare_pnums (const void *lhs_
, const void *rhs_
)
354 const struct packet_reg
* const *lhs
= lhs_
;
355 const struct packet_reg
* const *rhs
= rhs_
;
357 if ((*lhs
)->pnum
< (*rhs
)->pnum
)
359 else if ((*lhs
)->pnum
== (*rhs
)->pnum
)
366 init_remote_state (struct gdbarch
*gdbarch
)
368 int regnum
, num_remote_regs
, offset
;
369 struct remote_state
*rs
= get_remote_state_raw ();
370 struct remote_arch_state
*rsa
;
371 struct packet_reg
**remote_regs
;
373 rsa
= GDBARCH_OBSTACK_ZALLOC (gdbarch
, struct remote_arch_state
);
375 /* Use the architecture to build a regnum<->pnum table, which will be
376 1:1 unless a feature set specifies otherwise. */
377 rsa
->regs
= GDBARCH_OBSTACK_CALLOC (gdbarch
,
378 gdbarch_num_regs (gdbarch
),
380 for (regnum
= 0; regnum
< gdbarch_num_regs (gdbarch
); regnum
++)
382 struct packet_reg
*r
= &rsa
->regs
[regnum
];
384 if (register_size (gdbarch
, regnum
) == 0)
385 /* Do not try to fetch zero-sized (placeholder) registers. */
388 r
->pnum
= gdbarch_remote_register_number (gdbarch
, regnum
);
393 /* Define the g/G packet format as the contents of each register
394 with a remote protocol number, in order of ascending protocol
397 remote_regs
= alloca (gdbarch_num_regs (gdbarch
)
398 * sizeof (struct packet_reg
*));
399 for (num_remote_regs
= 0, regnum
= 0;
400 regnum
< gdbarch_num_regs (gdbarch
);
402 if (rsa
->regs
[regnum
].pnum
!= -1)
403 remote_regs
[num_remote_regs
++] = &rsa
->regs
[regnum
];
405 qsort (remote_regs
, num_remote_regs
, sizeof (struct packet_reg
*),
408 for (regnum
= 0, offset
= 0; regnum
< num_remote_regs
; regnum
++)
410 remote_regs
[regnum
]->in_g_packet
= 1;
411 remote_regs
[regnum
]->offset
= offset
;
412 offset
+= register_size (gdbarch
, remote_regs
[regnum
]->regnum
);
415 /* Record the maximum possible size of the g packet - it may turn out
417 rsa
->sizeof_g_packet
= offset
;
419 /* Default maximum number of characters in a packet body. Many
420 remote stubs have a hardwired buffer size of 400 bytes
421 (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used
422 as the maximum packet-size to ensure that the packet and an extra
423 NUL character can always fit in the buffer. This stops GDB
424 trashing stubs that try to squeeze an extra NUL into what is
425 already a full buffer (As of 1999-12-04 that was most stubs). */
426 rsa
->remote_packet_size
= 400 - 1;
428 /* This one is filled in when a ``g'' packet is received. */
429 rsa
->actual_register_packet_size
= 0;
431 /* Should rsa->sizeof_g_packet needs more space than the
432 default, adjust the size accordingly. Remember that each byte is
433 encoded as two characters. 32 is the overhead for the packet
434 header / footer. NOTE: cagney/1999-10-26: I suspect that 8
435 (``$NN:G...#NN'') is a better guess, the below has been padded a
437 if (rsa
->sizeof_g_packet
> ((rsa
->remote_packet_size
- 32) / 2))
438 rsa
->remote_packet_size
= (rsa
->sizeof_g_packet
* 2 + 32);
440 /* Make sure that the packet buffer is plenty big enough for
441 this architecture. */
442 if (rs
->buf_size
< rsa
->remote_packet_size
)
444 rs
->buf_size
= 2 * rsa
->remote_packet_size
;
445 rs
->buf
= xrealloc (rs
->buf
, rs
->buf_size
);
451 /* Return the current allowed size of a remote packet. This is
452 inferred from the current architecture, and should be used to
453 limit the length of outgoing packets. */
455 get_remote_packet_size (void)
457 struct remote_state
*rs
= get_remote_state ();
458 struct remote_arch_state
*rsa
= get_remote_arch_state ();
460 if (rs
->explicit_packet_size
)
461 return rs
->explicit_packet_size
;
463 return rsa
->remote_packet_size
;
466 static struct packet_reg
*
467 packet_reg_from_regnum (struct remote_arch_state
*rsa
, long regnum
)
469 if (regnum
< 0 && regnum
>= gdbarch_num_regs (current_gdbarch
))
473 struct packet_reg
*r
= &rsa
->regs
[regnum
];
474 gdb_assert (r
->regnum
== regnum
);
479 static struct packet_reg
*
480 packet_reg_from_pnum (struct remote_arch_state
*rsa
, LONGEST pnum
)
483 for (i
= 0; i
< gdbarch_num_regs (current_gdbarch
); i
++)
485 struct packet_reg
*r
= &rsa
->regs
[i
];
492 /* FIXME: graces/2002-08-08: These variables should eventually be
493 bound to an instance of the target object (as in gdbarch-tdep()),
494 when such a thing exists. */
496 /* This is set to the data address of the access causing the target
497 to stop for a watchpoint. */
498 static CORE_ADDR remote_watch_data_address
;
500 /* This is non-zero if target stopped for a watchpoint. */
501 static int remote_stopped_by_watchpoint_p
;
503 static struct target_ops remote_ops
;
505 static struct target_ops extended_remote_ops
;
507 static int remote_async_mask_value
= 1;
509 /* FIXME: cagney/1999-09-23: Even though getpkt was called with
510 ``forever'' still use the normal timeout mechanism. This is
511 currently used by the ASYNC code to guarentee that target reads
512 during the initial connect always time-out. Once getpkt has been
513 modified to return a timeout indication and, in turn
514 remote_wait()/wait_for_inferior() have gained a timeout parameter
516 static int wait_forever_enabled_p
= 1;
519 /* This variable chooses whether to send a ^C or a break when the user
520 requests program interruption. Although ^C is usually what remote
521 systems expect, and that is the default here, sometimes a break is
522 preferable instead. */
524 static int remote_break
;
526 /* Descriptor for I/O to remote machine. Initialize it to NULL so that
527 remote_open knows that we don't have a file open when the program
529 static struct serial
*remote_desc
= NULL
;
531 /* This variable sets the number of bits in an address that are to be
532 sent in a memory ("M" or "m") packet. Normally, after stripping
533 leading zeros, the entire address would be sent. This variable
534 restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The
535 initial implementation of remote.c restricted the address sent in
536 memory packets to ``host::sizeof long'' bytes - (typically 32
537 bits). Consequently, for 64 bit targets, the upper 32 bits of an
538 address was never sent. Since fixing this bug may cause a break in
539 some remote targets this variable is principly provided to
540 facilitate backward compatibility. */
542 static int remote_address_size
;
544 /* Temporary to track who currently owns the terminal. See
545 remote_terminal_* for more details. */
547 static int remote_async_terminal_ours_p
;
549 /* The executable file to use for "run" on the remote side. */
551 static char *remote_exec_file
= "";
554 /* User configurable variables for the number of characters in a
555 memory read/write packet. MIN (rsa->remote_packet_size,
556 rsa->sizeof_g_packet) is the default. Some targets need smaller
557 values (fifo overruns, et.al.) and some users need larger values
558 (speed up transfers). The variables ``preferred_*'' (the user
559 request), ``current_*'' (what was actually set) and ``forced_*''
560 (Positive - a soft limit, negative - a hard limit). */
562 struct memory_packet_config
569 /* Compute the current size of a read/write packet. Since this makes
570 use of ``actual_register_packet_size'' the computation is dynamic. */
573 get_memory_packet_size (struct memory_packet_config
*config
)
575 struct remote_state
*rs
= get_remote_state ();
576 struct remote_arch_state
*rsa
= get_remote_arch_state ();
578 /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk
579 law?) that some hosts don't cope very well with large alloca()
580 calls. Eventually the alloca() code will be replaced by calls to
581 xmalloc() and make_cleanups() allowing this restriction to either
582 be lifted or removed. */
583 #ifndef MAX_REMOTE_PACKET_SIZE
584 #define MAX_REMOTE_PACKET_SIZE 16384
586 /* NOTE: 20 ensures we can write at least one byte. */
587 #ifndef MIN_REMOTE_PACKET_SIZE
588 #define MIN_REMOTE_PACKET_SIZE 20
593 if (config
->size
<= 0)
594 what_they_get
= MAX_REMOTE_PACKET_SIZE
;
596 what_they_get
= config
->size
;
600 what_they_get
= get_remote_packet_size ();
601 /* Limit the packet to the size specified by the user. */
603 && what_they_get
> config
->size
)
604 what_they_get
= config
->size
;
606 /* Limit it to the size of the targets ``g'' response unless we have
607 permission from the stub to use a larger packet size. */
608 if (rs
->explicit_packet_size
== 0
609 && rsa
->actual_register_packet_size
> 0
610 && what_they_get
> rsa
->actual_register_packet_size
)
611 what_they_get
= rsa
->actual_register_packet_size
;
613 if (what_they_get
> MAX_REMOTE_PACKET_SIZE
)
614 what_they_get
= MAX_REMOTE_PACKET_SIZE
;
615 if (what_they_get
< MIN_REMOTE_PACKET_SIZE
)
616 what_they_get
= MIN_REMOTE_PACKET_SIZE
;
618 /* Make sure there is room in the global buffer for this packet
619 (including its trailing NUL byte). */
620 if (rs
->buf_size
< what_they_get
+ 1)
622 rs
->buf_size
= 2 * what_they_get
;
623 rs
->buf
= xrealloc (rs
->buf
, 2 * what_they_get
);
626 return what_they_get
;
629 /* Update the size of a read/write packet. If they user wants
630 something really big then do a sanity check. */
633 set_memory_packet_size (char *args
, struct memory_packet_config
*config
)
635 int fixed_p
= config
->fixed_p
;
636 long size
= config
->size
;
638 error (_("Argument required (integer, `fixed' or `limited')."));
639 else if (strcmp (args
, "hard") == 0
640 || strcmp (args
, "fixed") == 0)
642 else if (strcmp (args
, "soft") == 0
643 || strcmp (args
, "limit") == 0)
648 size
= strtoul (args
, &end
, 0);
650 error (_("Invalid %s (bad syntax)."), config
->name
);
652 /* Instead of explicitly capping the size of a packet to
653 MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is
654 instead allowed to set the size to something arbitrarily
656 if (size
> MAX_REMOTE_PACKET_SIZE
)
657 error (_("Invalid %s (too large)."), config
->name
);
661 if (fixed_p
&& !config
->fixed_p
)
663 if (! query (_("The target may not be able to correctly handle a %s\n"
664 "of %ld bytes. Change the packet size? "),
666 error (_("Packet size not changed."));
668 /* Update the config. */
669 config
->fixed_p
= fixed_p
;
674 show_memory_packet_size (struct memory_packet_config
*config
)
676 printf_filtered (_("The %s is %ld. "), config
->name
, config
->size
);
678 printf_filtered (_("Packets are fixed at %ld bytes.\n"),
679 get_memory_packet_size (config
));
681 printf_filtered (_("Packets are limited to %ld bytes.\n"),
682 get_memory_packet_size (config
));
685 static struct memory_packet_config memory_write_packet_config
=
687 "memory-write-packet-size",
691 set_memory_write_packet_size (char *args
, int from_tty
)
693 set_memory_packet_size (args
, &memory_write_packet_config
);
697 show_memory_write_packet_size (char *args
, int from_tty
)
699 show_memory_packet_size (&memory_write_packet_config
);
703 get_memory_write_packet_size (void)
705 return get_memory_packet_size (&memory_write_packet_config
);
708 static struct memory_packet_config memory_read_packet_config
=
710 "memory-read-packet-size",
714 set_memory_read_packet_size (char *args
, int from_tty
)
716 set_memory_packet_size (args
, &memory_read_packet_config
);
720 show_memory_read_packet_size (char *args
, int from_tty
)
722 show_memory_packet_size (&memory_read_packet_config
);
726 get_memory_read_packet_size (void)
728 long size
= get_memory_packet_size (&memory_read_packet_config
);
729 /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an
730 extra buffer size argument before the memory read size can be
731 increased beyond this. */
732 if (size
> get_remote_packet_size ())
733 size
= get_remote_packet_size ();
738 /* Generic configuration support for packets the stub optionally
739 supports. Allows the user to specify the use of the packet as well
740 as allowing GDB to auto-detect support in the remote stub. */
744 PACKET_SUPPORT_UNKNOWN
= 0,
753 enum auto_boolean detect
;
754 enum packet_support support
;
757 /* Analyze a packet's return value and update the packet config
768 update_packet_config (struct packet_config
*config
)
770 switch (config
->detect
)
772 case AUTO_BOOLEAN_TRUE
:
773 config
->support
= PACKET_ENABLE
;
775 case AUTO_BOOLEAN_FALSE
:
776 config
->support
= PACKET_DISABLE
;
778 case AUTO_BOOLEAN_AUTO
:
779 config
->support
= PACKET_SUPPORT_UNKNOWN
;
785 show_packet_config_cmd (struct packet_config
*config
)
787 char *support
= "internal-error";
788 switch (config
->support
)
794 support
= "disabled";
796 case PACKET_SUPPORT_UNKNOWN
:
800 switch (config
->detect
)
802 case AUTO_BOOLEAN_AUTO
:
803 printf_filtered (_("Support for the `%s' packet is auto-detected, currently %s.\n"),
804 config
->name
, support
);
806 case AUTO_BOOLEAN_TRUE
:
807 case AUTO_BOOLEAN_FALSE
:
808 printf_filtered (_("Support for the `%s' packet is currently %s.\n"),
809 config
->name
, support
);
815 add_packet_config_cmd (struct packet_config
*config
, const char *name
,
816 const char *title
, int legacy
)
823 config
->title
= title
;
824 config
->detect
= AUTO_BOOLEAN_AUTO
;
825 config
->support
= PACKET_SUPPORT_UNKNOWN
;
826 set_doc
= xstrprintf ("Set use of remote protocol `%s' (%s) packet",
828 show_doc
= xstrprintf ("Show current use of remote protocol `%s' (%s) packet",
830 /* set/show TITLE-packet {auto,on,off} */
831 cmd_name
= xstrprintf ("%s-packet", title
);
832 add_setshow_auto_boolean_cmd (cmd_name
, class_obscure
,
833 &config
->detect
, set_doc
, show_doc
, NULL
, /* help_doc */
834 set_remote_protocol_packet_cmd
,
835 show_remote_protocol_packet_cmd
,
836 &remote_set_cmdlist
, &remote_show_cmdlist
);
837 /* set/show remote NAME-packet {auto,on,off} -- legacy. */
841 legacy_name
= xstrprintf ("%s-packet", name
);
842 add_alias_cmd (legacy_name
, cmd_name
, class_obscure
, 0,
843 &remote_set_cmdlist
);
844 add_alias_cmd (legacy_name
, cmd_name
, class_obscure
, 0,
845 &remote_show_cmdlist
);
849 static enum packet_result
850 packet_check_result (const char *buf
)
854 /* The stub recognized the packet request. Check that the
855 operation succeeded. */
857 && isxdigit (buf
[1]) && isxdigit (buf
[2])
859 /* "Enn" - definitly an error. */
862 /* Always treat "E." as an error. This will be used for
863 more verbose error messages, such as E.memtypes. */
864 if (buf
[0] == 'E' && buf
[1] == '.')
867 /* The packet may or may not be OK. Just assume it is. */
871 /* The stub does not support the packet. */
872 return PACKET_UNKNOWN
;
875 static enum packet_result
876 packet_ok (const char *buf
, struct packet_config
*config
)
878 enum packet_result result
;
880 result
= packet_check_result (buf
);
885 /* The stub recognized the packet request. */
886 switch (config
->support
)
888 case PACKET_SUPPORT_UNKNOWN
:
890 fprintf_unfiltered (gdb_stdlog
,
891 "Packet %s (%s) is supported\n",
892 config
->name
, config
->title
);
893 config
->support
= PACKET_ENABLE
;
896 internal_error (__FILE__
, __LINE__
,
897 _("packet_ok: attempt to use a disabled packet"));
904 /* The stub does not support the packet. */
905 switch (config
->support
)
908 if (config
->detect
== AUTO_BOOLEAN_AUTO
)
909 /* If the stub previously indicated that the packet was
910 supported then there is a protocol error.. */
911 error (_("Protocol error: %s (%s) conflicting enabled responses."),
912 config
->name
, config
->title
);
914 /* The user set it wrong. */
915 error (_("Enabled packet %s (%s) not recognized by stub"),
916 config
->name
, config
->title
);
918 case PACKET_SUPPORT_UNKNOWN
:
920 fprintf_unfiltered (gdb_stdlog
,
921 "Packet %s (%s) is NOT supported\n",
922 config
->name
, config
->title
);
923 config
->support
= PACKET_DISABLE
;
951 PACKET_qXfer_features
,
952 PACKET_qXfer_libraries
,
953 PACKET_qXfer_memory_map
,
954 PACKET_qXfer_spu_read
,
955 PACKET_qXfer_spu_write
,
959 PACKET_qSearch_memory
,
965 static struct packet_config remote_protocol_packets
[PACKET_MAX
];
968 set_remote_protocol_packet_cmd (char *args
, int from_tty
,
969 struct cmd_list_element
*c
)
971 struct packet_config
*packet
;
973 for (packet
= remote_protocol_packets
;
974 packet
< &remote_protocol_packets
[PACKET_MAX
];
977 if (&packet
->detect
== c
->var
)
979 update_packet_config (packet
);
983 internal_error (__FILE__
, __LINE__
, "Could not find config for %s",
988 show_remote_protocol_packet_cmd (struct ui_file
*file
, int from_tty
,
989 struct cmd_list_element
*c
,
992 struct packet_config
*packet
;
994 for (packet
= remote_protocol_packets
;
995 packet
< &remote_protocol_packets
[PACKET_MAX
];
998 if (&packet
->detect
== c
->var
)
1000 show_packet_config_cmd (packet
);
1004 internal_error (__FILE__
, __LINE__
, "Could not find config for %s",
1008 /* Should we try one of the 'Z' requests? */
1012 Z_PACKET_SOFTWARE_BP
,
1013 Z_PACKET_HARDWARE_BP
,
1020 /* For compatibility with older distributions. Provide a ``set remote
1021 Z-packet ...'' command that updates all the Z packet types. */
1023 static enum auto_boolean remote_Z_packet_detect
;
1026 set_remote_protocol_Z_packet_cmd (char *args
, int from_tty
,
1027 struct cmd_list_element
*c
)
1030 for (i
= 0; i
< NR_Z_PACKET_TYPES
; i
++)
1032 remote_protocol_packets
[PACKET_Z0
+ i
].detect
= remote_Z_packet_detect
;
1033 update_packet_config (&remote_protocol_packets
[PACKET_Z0
+ i
]);
1038 show_remote_protocol_Z_packet_cmd (struct ui_file
*file
, int from_tty
,
1039 struct cmd_list_element
*c
,
1043 for (i
= 0; i
< NR_Z_PACKET_TYPES
; i
++)
1045 show_packet_config_cmd (&remote_protocol_packets
[PACKET_Z0
+ i
]);
1049 /* Should we try the 'ThreadInfo' query packet?
1051 This variable (NOT available to the user: auto-detect only!)
1052 determines whether GDB will use the new, simpler "ThreadInfo"
1053 query or the older, more complex syntax for thread queries.
1054 This is an auto-detect variable (set to true at each connect,
1055 and set to false when the target fails to recognize it). */
1057 static int use_threadinfo_query
;
1058 static int use_threadextra_query
;
1060 /* Tokens for use by the asynchronous signal handlers for SIGINT. */
1061 static struct async_signal_handler
*sigint_remote_twice_token
;
1062 static struct async_signal_handler
*sigint_remote_token
;
1067 /* These are the threads which we last sent to the remote system.
1068 -1 for all or -2 for not sent yet. */
1069 static int general_thread
;
1070 static int continue_thread
;
1072 /* Call this function as a result of
1073 1) A halt indication (T packet) containing a thread id
1074 2) A direct query of currthread
1075 3) Successful execution of set thread
1079 record_currthread (int currthread
)
1081 general_thread
= currthread
;
1083 /* If this is a new thread, add it to GDB's thread list.
1084 If we leave it up to WFI to do this, bad things will happen. */
1085 if (!in_thread_list (pid_to_ptid (currthread
)))
1086 add_thread (pid_to_ptid (currthread
));
1089 static char *last_pass_packet
;
1091 /* If 'QPassSignals' is supported, tell the remote stub what signals
1092 it can simply pass through to the inferior without reporting. */
1095 remote_pass_signals (void)
1097 if (remote_protocol_packets
[PACKET_QPassSignals
].support
!= PACKET_DISABLE
)
1099 char *pass_packet
, *p
;
1100 int numsigs
= (int) TARGET_SIGNAL_LAST
;
1103 gdb_assert (numsigs
< 256);
1104 for (i
= 0; i
< numsigs
; i
++)
1106 if (signal_stop_state (i
) == 0
1107 && signal_print_state (i
) == 0
1108 && signal_pass_state (i
) == 1)
1111 pass_packet
= xmalloc (count
* 3 + strlen ("QPassSignals:") + 1);
1112 strcpy (pass_packet
, "QPassSignals:");
1113 p
= pass_packet
+ strlen (pass_packet
);
1114 for (i
= 0; i
< numsigs
; i
++)
1116 if (signal_stop_state (i
) == 0
1117 && signal_print_state (i
) == 0
1118 && signal_pass_state (i
) == 1)
1121 *p
++ = tohex (i
>> 4);
1122 *p
++ = tohex (i
& 15);
1131 if (!last_pass_packet
|| strcmp (last_pass_packet
, pass_packet
))
1133 struct remote_state
*rs
= get_remote_state ();
1134 char *buf
= rs
->buf
;
1136 putpkt (pass_packet
);
1137 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1138 packet_ok (buf
, &remote_protocol_packets
[PACKET_QPassSignals
]);
1139 if (last_pass_packet
)
1140 xfree (last_pass_packet
);
1141 last_pass_packet
= pass_packet
;
1144 xfree (pass_packet
);
1148 #define MAGIC_NULL_PID 42000
1151 set_thread (int th
, int gen
)
1153 struct remote_state
*rs
= get_remote_state ();
1154 char *buf
= rs
->buf
;
1155 int state
= gen
? general_thread
: continue_thread
;
1161 buf
[1] = gen
? 'g' : 'c';
1162 if (th
== MAGIC_NULL_PID
)
1168 xsnprintf (&buf
[2], get_remote_packet_size () - 2, "-%x", -th
);
1170 xsnprintf (&buf
[2], get_remote_packet_size () - 2, "%x", th
);
1172 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1174 general_thread
= th
;
1176 continue_thread
= th
;
1179 /* Return nonzero if the thread TH is still alive on the remote system. */
1182 remote_thread_alive (ptid_t ptid
)
1184 struct remote_state
*rs
= get_remote_state ();
1185 int tid
= PIDGET (ptid
);
1188 xsnprintf (rs
->buf
, get_remote_packet_size (), "T-%08x", -tid
);
1190 xsnprintf (rs
->buf
, get_remote_packet_size (), "T%08x", tid
);
1192 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1193 return (rs
->buf
[0] == 'O' && rs
->buf
[1] == 'K');
1196 /* About these extended threadlist and threadinfo packets. They are
1197 variable length packets but, the fields within them are often fixed
1198 length. They are redundent enough to send over UDP as is the
1199 remote protocol in general. There is a matching unit test module
1202 #define OPAQUETHREADBYTES 8
1204 /* a 64 bit opaque identifier */
1205 typedef unsigned char threadref
[OPAQUETHREADBYTES
];
1207 /* WARNING: This threadref data structure comes from the remote O.S.,
1208 libstub protocol encoding, and remote.c. it is not particularly
1211 /* Right now, the internal structure is int. We want it to be bigger.
1215 typedef int gdb_threadref
; /* Internal GDB thread reference. */
1217 /* gdb_ext_thread_info is an internal GDB data structure which is
1218 equivalent to the reply of the remote threadinfo packet. */
1220 struct gdb_ext_thread_info
1222 threadref threadid
; /* External form of thread reference. */
1223 int active
; /* Has state interesting to GDB?
1225 char display
[256]; /* Brief state display, name,
1226 blocked/suspended. */
1227 char shortname
[32]; /* To be used to name threads. */
1228 char more_display
[256]; /* Long info, statistics, queue depth,
1232 /* The volume of remote transfers can be limited by submitting
1233 a mask containing bits specifying the desired information.
1234 Use a union of these values as the 'selection' parameter to
1235 get_thread_info. FIXME: Make these TAG names more thread specific.
1238 #define TAG_THREADID 1
1239 #define TAG_EXISTS 2
1240 #define TAG_DISPLAY 4
1241 #define TAG_THREADNAME 8
1242 #define TAG_MOREDISPLAY 16
1244 #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2)
1246 char *unpack_varlen_hex (char *buff
, ULONGEST
*result
);
1248 static char *unpack_nibble (char *buf
, int *val
);
1250 static char *pack_nibble (char *buf
, int nibble
);
1252 static char *pack_hex_byte (char *pkt
, int /* unsigned char */ byte
);
1254 static char *unpack_byte (char *buf
, int *value
);
1256 static char *pack_int (char *buf
, int value
);
1258 static char *unpack_int (char *buf
, int *value
);
1260 static char *unpack_string (char *src
, char *dest
, int length
);
1262 static char *pack_threadid (char *pkt
, threadref
*id
);
1264 static char *unpack_threadid (char *inbuf
, threadref
*id
);
1266 void int_to_threadref (threadref
*id
, int value
);
1268 static int threadref_to_int (threadref
*ref
);
1270 static void copy_threadref (threadref
*dest
, threadref
*src
);
1272 static int threadmatch (threadref
*dest
, threadref
*src
);
1274 static char *pack_threadinfo_request (char *pkt
, int mode
,
1277 static int remote_unpack_thread_info_response (char *pkt
,
1278 threadref
*expectedref
,
1279 struct gdb_ext_thread_info
1283 static int remote_get_threadinfo (threadref
*threadid
,
1284 int fieldset
, /*TAG mask */
1285 struct gdb_ext_thread_info
*info
);
1287 static char *pack_threadlist_request (char *pkt
, int startflag
,
1289 threadref
*nextthread
);
1291 static int parse_threadlist_response (char *pkt
,
1293 threadref
*original_echo
,
1294 threadref
*resultlist
,
1297 static int remote_get_threadlist (int startflag
,
1298 threadref
*nextthread
,
1302 threadref
*threadlist
);
1304 typedef int (*rmt_thread_action
) (threadref
*ref
, void *context
);
1306 static int remote_threadlist_iterator (rmt_thread_action stepfunction
,
1307 void *context
, int looplimit
);
1309 static int remote_newthread_step (threadref
*ref
, void *context
);
1311 /* Encode 64 bits in 16 chars of hex. */
1313 static const char hexchars
[] = "0123456789abcdef";
1316 ishex (int ch
, int *val
)
1318 if ((ch
>= 'a') && (ch
<= 'f'))
1320 *val
= ch
- 'a' + 10;
1323 if ((ch
>= 'A') && (ch
<= 'F'))
1325 *val
= ch
- 'A' + 10;
1328 if ((ch
>= '0') && (ch
<= '9'))
1339 if (ch
>= 'a' && ch
<= 'f')
1340 return ch
- 'a' + 10;
1341 if (ch
>= '0' && ch
<= '9')
1343 if (ch
>= 'A' && ch
<= 'F')
1344 return ch
- 'A' + 10;
1349 stub_unpack_int (char *buff
, int fieldlength
)
1356 nibble
= stubhex (*buff
++);
1360 retval
= retval
<< 4;
1366 unpack_varlen_hex (char *buff
, /* packet to parse */
1370 ULONGEST retval
= 0;
1372 while (ishex (*buff
, &nibble
))
1375 retval
= retval
<< 4;
1376 retval
|= nibble
& 0x0f;
1383 unpack_nibble (char *buf
, int *val
)
1385 *val
= fromhex (*buf
++);
1390 pack_nibble (char *buf
, int nibble
)
1392 *buf
++ = hexchars
[(nibble
& 0x0f)];
1397 pack_hex_byte (char *pkt
, int byte
)
1399 *pkt
++ = hexchars
[(byte
>> 4) & 0xf];
1400 *pkt
++ = hexchars
[(byte
& 0xf)];
1405 unpack_byte (char *buf
, int *value
)
1407 *value
= stub_unpack_int (buf
, 2);
1412 pack_int (char *buf
, int value
)
1414 buf
= pack_hex_byte (buf
, (value
>> 24) & 0xff);
1415 buf
= pack_hex_byte (buf
, (value
>> 16) & 0xff);
1416 buf
= pack_hex_byte (buf
, (value
>> 8) & 0x0ff);
1417 buf
= pack_hex_byte (buf
, (value
& 0xff));
1422 unpack_int (char *buf
, int *value
)
1424 *value
= stub_unpack_int (buf
, 8);
1428 #if 0 /* Currently unused, uncomment when needed. */
1429 static char *pack_string (char *pkt
, char *string
);
1432 pack_string (char *pkt
, char *string
)
1437 len
= strlen (string
);
1439 len
= 200; /* Bigger than most GDB packets, junk??? */
1440 pkt
= pack_hex_byte (pkt
, len
);
1444 if ((ch
== '\0') || (ch
== '#'))
1445 ch
= '*'; /* Protect encapsulation. */
1450 #endif /* 0 (unused) */
1453 unpack_string (char *src
, char *dest
, int length
)
1462 pack_threadid (char *pkt
, threadref
*id
)
1465 unsigned char *altid
;
1467 altid
= (unsigned char *) id
;
1468 limit
= pkt
+ BUF_THREAD_ID_SIZE
;
1470 pkt
= pack_hex_byte (pkt
, *altid
++);
1476 unpack_threadid (char *inbuf
, threadref
*id
)
1479 char *limit
= inbuf
+ BUF_THREAD_ID_SIZE
;
1482 altref
= (char *) id
;
1484 while (inbuf
< limit
)
1486 x
= stubhex (*inbuf
++);
1487 y
= stubhex (*inbuf
++);
1488 *altref
++ = (x
<< 4) | y
;
1493 /* Externally, threadrefs are 64 bits but internally, they are still
1494 ints. This is due to a mismatch of specifications. We would like
1495 to use 64bit thread references internally. This is an adapter
1499 int_to_threadref (threadref
*id
, int value
)
1501 unsigned char *scan
;
1503 scan
= (unsigned char *) id
;
1509 *scan
++ = (value
>> 24) & 0xff;
1510 *scan
++ = (value
>> 16) & 0xff;
1511 *scan
++ = (value
>> 8) & 0xff;
1512 *scan
++ = (value
& 0xff);
1516 threadref_to_int (threadref
*ref
)
1519 unsigned char *scan
;
1525 value
= (value
<< 8) | ((*scan
++) & 0xff);
1530 copy_threadref (threadref
*dest
, threadref
*src
)
1533 unsigned char *csrc
, *cdest
;
1535 csrc
= (unsigned char *) src
;
1536 cdest
= (unsigned char *) dest
;
1543 threadmatch (threadref
*dest
, threadref
*src
)
1545 /* Things are broken right now, so just assume we got a match. */
1547 unsigned char *srcp
, *destp
;
1549 srcp
= (char *) src
;
1550 destp
= (char *) dest
;
1554 result
&= (*srcp
++ == *destp
++) ? 1 : 0;
1561 threadid:1, # always request threadid
1568 /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */
1571 pack_threadinfo_request (char *pkt
, int mode
, threadref
*id
)
1573 *pkt
++ = 'q'; /* Info Query */
1574 *pkt
++ = 'P'; /* process or thread info */
1575 pkt
= pack_int (pkt
, mode
); /* mode */
1576 pkt
= pack_threadid (pkt
, id
); /* threadid */
1577 *pkt
= '\0'; /* terminate */
1581 /* These values tag the fields in a thread info response packet. */
1582 /* Tagging the fields allows us to request specific fields and to
1583 add more fields as time goes by. */
1585 #define TAG_THREADID 1 /* Echo the thread identifier. */
1586 #define TAG_EXISTS 2 /* Is this process defined enough to
1587 fetch registers and its stack? */
1588 #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */
1589 #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */
1590 #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about
1594 remote_unpack_thread_info_response (char *pkt
, threadref
*expectedref
,
1595 struct gdb_ext_thread_info
*info
)
1597 struct remote_state
*rs
= get_remote_state ();
1601 char *limit
= pkt
+ rs
->buf_size
; /* Plausible parsing limit. */
1604 /* info->threadid = 0; FIXME: implement zero_threadref. */
1606 info
->display
[0] = '\0';
1607 info
->shortname
[0] = '\0';
1608 info
->more_display
[0] = '\0';
1610 /* Assume the characters indicating the packet type have been
1612 pkt
= unpack_int (pkt
, &mask
); /* arg mask */
1613 pkt
= unpack_threadid (pkt
, &ref
);
1616 warning (_("Incomplete response to threadinfo request."));
1617 if (!threadmatch (&ref
, expectedref
))
1618 { /* This is an answer to a different request. */
1619 warning (_("ERROR RMT Thread info mismatch."));
1622 copy_threadref (&info
->threadid
, &ref
);
1624 /* Loop on tagged fields , try to bail if somthing goes wrong. */
1626 /* Packets are terminated with nulls. */
1627 while ((pkt
< limit
) && mask
&& *pkt
)
1629 pkt
= unpack_int (pkt
, &tag
); /* tag */
1630 pkt
= unpack_byte (pkt
, &length
); /* length */
1631 if (!(tag
& mask
)) /* Tags out of synch with mask. */
1633 warning (_("ERROR RMT: threadinfo tag mismatch."));
1637 if (tag
== TAG_THREADID
)
1641 warning (_("ERROR RMT: length of threadid is not 16."));
1645 pkt
= unpack_threadid (pkt
, &ref
);
1646 mask
= mask
& ~TAG_THREADID
;
1649 if (tag
== TAG_EXISTS
)
1651 info
->active
= stub_unpack_int (pkt
, length
);
1653 mask
= mask
& ~(TAG_EXISTS
);
1656 warning (_("ERROR RMT: 'exists' length too long."));
1662 if (tag
== TAG_THREADNAME
)
1664 pkt
= unpack_string (pkt
, &info
->shortname
[0], length
);
1665 mask
= mask
& ~TAG_THREADNAME
;
1668 if (tag
== TAG_DISPLAY
)
1670 pkt
= unpack_string (pkt
, &info
->display
[0], length
);
1671 mask
= mask
& ~TAG_DISPLAY
;
1674 if (tag
== TAG_MOREDISPLAY
)
1676 pkt
= unpack_string (pkt
, &info
->more_display
[0], length
);
1677 mask
= mask
& ~TAG_MOREDISPLAY
;
1680 warning (_("ERROR RMT: unknown thread info tag."));
1681 break; /* Not a tag we know about. */
1687 remote_get_threadinfo (threadref
*threadid
, int fieldset
, /* TAG mask */
1688 struct gdb_ext_thread_info
*info
)
1690 struct remote_state
*rs
= get_remote_state ();
1693 pack_threadinfo_request (rs
->buf
, fieldset
, threadid
);
1695 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1696 result
= remote_unpack_thread_info_response (rs
->buf
+ 2,
1701 /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */
1704 pack_threadlist_request (char *pkt
, int startflag
, int threadcount
,
1705 threadref
*nextthread
)
1707 *pkt
++ = 'q'; /* info query packet */
1708 *pkt
++ = 'L'; /* Process LIST or threadLIST request */
1709 pkt
= pack_nibble (pkt
, startflag
); /* initflag 1 bytes */
1710 pkt
= pack_hex_byte (pkt
, threadcount
); /* threadcount 2 bytes */
1711 pkt
= pack_threadid (pkt
, nextthread
); /* 64 bit thread identifier */
1716 /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */
1719 parse_threadlist_response (char *pkt
, int result_limit
,
1720 threadref
*original_echo
, threadref
*resultlist
,
1723 struct remote_state
*rs
= get_remote_state ();
1725 int count
, resultcount
, done
;
1728 /* Assume the 'q' and 'M chars have been stripped. */
1729 limit
= pkt
+ (rs
->buf_size
- BUF_THREAD_ID_SIZE
);
1730 /* done parse past here */
1731 pkt
= unpack_byte (pkt
, &count
); /* count field */
1732 pkt
= unpack_nibble (pkt
, &done
);
1733 /* The first threadid is the argument threadid. */
1734 pkt
= unpack_threadid (pkt
, original_echo
); /* should match query packet */
1735 while ((count
-- > 0) && (pkt
< limit
))
1737 pkt
= unpack_threadid (pkt
, resultlist
++);
1738 if (resultcount
++ >= result_limit
)
1747 remote_get_threadlist (int startflag
, threadref
*nextthread
, int result_limit
,
1748 int *done
, int *result_count
, threadref
*threadlist
)
1750 struct remote_state
*rs
= get_remote_state ();
1751 static threadref echo_nextthread
;
1754 /* Trancate result limit to be smaller than the packet size. */
1755 if ((((result_limit
+ 1) * BUF_THREAD_ID_SIZE
) + 10) >= get_remote_packet_size ())
1756 result_limit
= (get_remote_packet_size () / BUF_THREAD_ID_SIZE
) - 2;
1758 pack_threadlist_request (rs
->buf
, startflag
, result_limit
, nextthread
);
1760 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1762 if (*rs
->buf
== '\0')
1766 parse_threadlist_response (rs
->buf
+ 2, result_limit
, &echo_nextthread
,
1769 if (!threadmatch (&echo_nextthread
, nextthread
))
1771 /* FIXME: This is a good reason to drop the packet. */
1772 /* Possably, there is a duplicate response. */
1774 retransmit immediatly - race conditions
1775 retransmit after timeout - yes
1777 wait for packet, then exit
1779 warning (_("HMM: threadlist did not echo arg thread, dropping it."));
1780 return 0; /* I choose simply exiting. */
1782 if (*result_count
<= 0)
1786 warning (_("RMT ERROR : failed to get remote thread list."));
1789 return result
; /* break; */
1791 if (*result_count
> result_limit
)
1794 warning (_("RMT ERROR: threadlist response longer than requested."));
1800 /* This is the interface between remote and threads, remotes upper
1803 /* remote_find_new_threads retrieves the thread list and for each
1804 thread in the list, looks up the thread in GDB's internal list,
1805 ading the thread if it does not already exist. This involves
1806 getting partial thread lists from the remote target so, polling the
1807 quit_flag is required. */
1810 /* About this many threadisds fit in a packet. */
1812 #define MAXTHREADLISTRESULTS 32
1815 remote_threadlist_iterator (rmt_thread_action stepfunction
, void *context
,
1818 int done
, i
, result_count
;
1822 static threadref nextthread
;
1823 static threadref resultthreadlist
[MAXTHREADLISTRESULTS
];
1828 if (loopcount
++ > looplimit
)
1831 warning (_("Remote fetch threadlist -infinite loop-."));
1834 if (!remote_get_threadlist (startflag
, &nextthread
, MAXTHREADLISTRESULTS
,
1835 &done
, &result_count
, resultthreadlist
))
1840 /* Clear for later iterations. */
1842 /* Setup to resume next batch of thread references, set nextthread. */
1843 if (result_count
>= 1)
1844 copy_threadref (&nextthread
, &resultthreadlist
[result_count
- 1]);
1846 while (result_count
--)
1847 if (!(result
= (*stepfunction
) (&resultthreadlist
[i
++], context
)))
1854 remote_newthread_step (threadref
*ref
, void *context
)
1858 ptid
= pid_to_ptid (threadref_to_int (ref
));
1860 if (!in_thread_list (ptid
))
1862 return 1; /* continue iterator */
1865 #define CRAZY_MAX_THREADS 1000
1868 remote_current_thread (ptid_t oldpid
)
1870 struct remote_state
*rs
= get_remote_state ();
1873 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1874 if (rs
->buf
[0] == 'Q' && rs
->buf
[1] == 'C')
1875 /* Use strtoul here, so we'll correctly parse values whose highest
1876 bit is set. The protocol carries them as a simple series of
1877 hex digits; in the absence of a sign, strtol will see such
1878 values as positive numbers out of range for signed 'long', and
1879 return LONG_MAX to indicate an overflow. */
1880 return pid_to_ptid (strtoul (&rs
->buf
[2], NULL
, 16));
1885 /* Find new threads for info threads command.
1886 * Original version, using John Metzler's thread protocol.
1890 remote_find_new_threads (void)
1892 remote_threadlist_iterator (remote_newthread_step
, 0,
1894 if (PIDGET (inferior_ptid
) == MAGIC_NULL_PID
) /* ack ack ack */
1895 inferior_ptid
= remote_current_thread (inferior_ptid
);
1899 * Find all threads for info threads command.
1900 * Uses new thread protocol contributed by Cisco.
1901 * Falls back and attempts to use the older method (above)
1902 * if the target doesn't respond to the new method.
1906 remote_threads_info (void)
1908 struct remote_state
*rs
= get_remote_state ();
1912 if (remote_desc
== 0) /* paranoia */
1913 error (_("Command can only be used when connected to the remote target."));
1915 if (use_threadinfo_query
)
1917 putpkt ("qfThreadInfo");
1918 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1920 if (bufp
[0] != '\0') /* q packet recognized */
1922 while (*bufp
++ == 'm') /* reply contains one or more TID */
1926 /* Use strtoul here, so we'll correctly parse values
1927 whose highest bit is set. The protocol carries
1928 them as a simple series of hex digits; in the
1929 absence of a sign, strtol will see such values as
1930 positive numbers out of range for signed 'long',
1931 and return LONG_MAX to indicate an overflow. */
1932 tid
= strtoul (bufp
, &bufp
, 16);
1933 if (tid
!= 0 && !in_thread_list (pid_to_ptid (tid
)))
1934 add_thread (pid_to_ptid (tid
));
1936 while (*bufp
++ == ','); /* comma-separated list */
1937 putpkt ("qsThreadInfo");
1938 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1945 /* Else fall back to old method based on jmetzler protocol. */
1946 use_threadinfo_query
= 0;
1947 remote_find_new_threads ();
1952 * Collect a descriptive string about the given thread.
1953 * The target may say anything it wants to about the thread
1954 * (typically info about its blocked / runnable state, name, etc.).
1955 * This string will appear in the info threads display.
1957 * Optional: targets are not required to implement this function.
1961 remote_threads_extra_info (struct thread_info
*tp
)
1963 struct remote_state
*rs
= get_remote_state ();
1967 struct gdb_ext_thread_info threadinfo
;
1968 static char display_buf
[100]; /* arbitrary... */
1969 int n
= 0; /* position in display_buf */
1971 if (remote_desc
== 0) /* paranoia */
1972 internal_error (__FILE__
, __LINE__
,
1973 _("remote_threads_extra_info"));
1975 if (use_threadextra_query
)
1977 xsnprintf (rs
->buf
, get_remote_packet_size (), "qThreadExtraInfo,%x",
1980 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1981 if (rs
->buf
[0] != 0)
1983 n
= min (strlen (rs
->buf
) / 2, sizeof (display_buf
));
1984 result
= hex2bin (rs
->buf
, (gdb_byte
*) display_buf
, n
);
1985 display_buf
[result
] = '\0';
1990 /* If the above query fails, fall back to the old method. */
1991 use_threadextra_query
= 0;
1992 set
= TAG_THREADID
| TAG_EXISTS
| TAG_THREADNAME
1993 | TAG_MOREDISPLAY
| TAG_DISPLAY
;
1994 int_to_threadref (&id
, PIDGET (tp
->ptid
));
1995 if (remote_get_threadinfo (&id
, set
, &threadinfo
))
1996 if (threadinfo
.active
)
1998 if (*threadinfo
.shortname
)
1999 n
+= xsnprintf (&display_buf
[0], sizeof (display_buf
) - n
,
2000 " Name: %s,", threadinfo
.shortname
);
2001 if (*threadinfo
.display
)
2002 n
+= xsnprintf (&display_buf
[n
], sizeof (display_buf
) - n
,
2003 " State: %s,", threadinfo
.display
);
2004 if (*threadinfo
.more_display
)
2005 n
+= xsnprintf (&display_buf
[n
], sizeof (display_buf
) - n
,
2006 " Priority: %s", threadinfo
.more_display
);
2010 /* For purely cosmetic reasons, clear up trailing commas. */
2011 if (',' == display_buf
[n
-1])
2012 display_buf
[n
-1] = ' ';
2020 /* Restart the remote side; this is an extended protocol operation. */
2023 extended_remote_restart (void)
2025 struct remote_state
*rs
= get_remote_state ();
2027 /* Send the restart command; for reasons I don't understand the
2028 remote side really expects a number after the "R". */
2029 xsnprintf (rs
->buf
, get_remote_packet_size (), "R%x", 0);
2032 remote_fileio_reset ();
2035 /* Clean up connection to a remote debugger. */
2038 remote_close (int quitting
)
2041 serial_close (remote_desc
);
2045 /* Query the remote side for the text, data and bss offsets. */
2050 struct remote_state
*rs
= get_remote_state ();
2053 int lose
, num_segments
= 0, do_sections
, do_segments
;
2054 CORE_ADDR text_addr
, data_addr
, bss_addr
, segments
[2];
2055 struct section_offsets
*offs
;
2056 struct symfile_segment_data
*data
;
2058 if (symfile_objfile
== NULL
)
2061 putpkt ("qOffsets");
2062 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2065 if (buf
[0] == '\000')
2066 return; /* Return silently. Stub doesn't support
2070 warning (_("Remote failure reply: %s"), buf
);
2074 /* Pick up each field in turn. This used to be done with scanf, but
2075 scanf will make trouble if CORE_ADDR size doesn't match
2076 conversion directives correctly. The following code will work
2077 with any size of CORE_ADDR. */
2078 text_addr
= data_addr
= bss_addr
= 0;
2082 if (strncmp (ptr
, "Text=", 5) == 0)
2085 /* Don't use strtol, could lose on big values. */
2086 while (*ptr
&& *ptr
!= ';')
2087 text_addr
= (text_addr
<< 4) + fromhex (*ptr
++);
2089 if (strncmp (ptr
, ";Data=", 6) == 0)
2092 while (*ptr
&& *ptr
!= ';')
2093 data_addr
= (data_addr
<< 4) + fromhex (*ptr
++);
2098 if (!lose
&& strncmp (ptr
, ";Bss=", 5) == 0)
2101 while (*ptr
&& *ptr
!= ';')
2102 bss_addr
= (bss_addr
<< 4) + fromhex (*ptr
++);
2104 if (bss_addr
!= data_addr
)
2105 warning (_("Target reported unsupported offsets: %s"), buf
);
2110 else if (strncmp (ptr
, "TextSeg=", 8) == 0)
2113 /* Don't use strtol, could lose on big values. */
2114 while (*ptr
&& *ptr
!= ';')
2115 text_addr
= (text_addr
<< 4) + fromhex (*ptr
++);
2118 if (strncmp (ptr
, ";DataSeg=", 9) == 0)
2121 while (*ptr
&& *ptr
!= ';')
2122 data_addr
= (data_addr
<< 4) + fromhex (*ptr
++);
2130 error (_("Malformed response to offset query, %s"), buf
);
2131 else if (*ptr
!= '\0')
2132 warning (_("Target reported unsupported offsets: %s"), buf
);
2134 offs
= ((struct section_offsets
*)
2135 alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
)));
2136 memcpy (offs
, symfile_objfile
->section_offsets
,
2137 SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
));
2139 data
= get_symfile_segment_data (symfile_objfile
->obfd
);
2140 do_segments
= (data
!= NULL
);
2141 do_sections
= num_segments
== 0;
2143 if (num_segments
> 0)
2145 segments
[0] = text_addr
;
2146 segments
[1] = data_addr
;
2148 /* If we have two segments, we can still try to relocate everything
2149 by assuming that the .text and .data offsets apply to the whole
2150 text and data segments. Convert the offsets given in the packet
2151 to base addresses for symfile_map_offsets_to_segments. */
2152 else if (data
&& data
->num_segments
== 2)
2154 segments
[0] = data
->segment_bases
[0] + text_addr
;
2155 segments
[1] = data
->segment_bases
[1] + data_addr
;
2158 /* If the object file has only one segment, assume that it is text
2159 rather than data; main programs with no writable data are rare,
2160 but programs with no code are useless. Of course the code might
2161 have ended up in the data segment... to detect that we would need
2162 the permissions here. */
2163 else if (data
&& data
->num_segments
== 1)
2165 segments
[0] = data
->segment_bases
[0] + text_addr
;
2168 /* There's no way to relocate by segment. */
2174 int ret
= symfile_map_offsets_to_segments (symfile_objfile
->obfd
, data
,
2175 offs
, num_segments
, segments
);
2177 if (ret
== 0 && !do_sections
)
2178 error (_("Can not handle qOffsets TextSeg response with this symbol file"));
2185 free_symfile_segment_data (data
);
2189 offs
->offsets
[SECT_OFF_TEXT (symfile_objfile
)] = text_addr
;
2191 /* This is a temporary kludge to force data and bss to use the same offsets
2192 because that's what nlmconv does now. The real solution requires changes
2193 to the stub and remote.c that I don't have time to do right now. */
2195 offs
->offsets
[SECT_OFF_DATA (symfile_objfile
)] = data_addr
;
2196 offs
->offsets
[SECT_OFF_BSS (symfile_objfile
)] = data_addr
;
2199 objfile_relocate (symfile_objfile
, offs
);
2202 /* Stub for catch_exception. */
2204 struct start_remote_args
2208 /* The current target. */
2209 struct target_ops
*target
;
2211 /* Non-zero if this is an extended-remote target. */
2216 remote_start_remote (struct ui_out
*uiout
, void *opaque
)
2218 struct remote_state
*rs
= get_remote_state ();
2219 struct start_remote_args
*args
= opaque
;
2220 char *wait_status
= NULL
;
2222 immediate_quit
++; /* Allow user to interrupt it. */
2224 /* Ack any packet which the remote side has already sent. */
2225 serial_write (remote_desc
, "+", 1);
2227 /* Check whether the target is running now. */
2229 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2231 if (rs
->buf
[0] == 'W' || rs
->buf
[0] == 'X')
2233 if (args
->extended_p
)
2235 /* We're connected, but not running. Drop out before we
2236 call start_remote. */
2237 target_mark_exited (args
->target
);
2241 error (_("The target is not running (try extended-remote?)"));
2245 if (args
->extended_p
)
2246 target_mark_running (args
->target
);
2248 /* Save the reply for later. */
2249 wait_status
= alloca (strlen (rs
->buf
) + 1);
2250 strcpy (wait_status
, rs
->buf
);
2253 /* Let the stub know that we want it to return the thread. */
2256 /* Without this, some commands which require an active target
2257 (such as kill) won't work. This variable serves (at least)
2258 double duty as both the pid of the target process (if it has
2259 such), and as a flag indicating that a target is active.
2260 These functions should be split out into seperate variables,
2261 especially since GDB will someday have a notion of debugging
2262 several processes. */
2263 inferior_ptid
= pid_to_ptid (MAGIC_NULL_PID
);
2265 /* Now, if we have thread information, update inferior_ptid. */
2266 inferior_ptid
= remote_current_thread (inferior_ptid
);
2268 get_offsets (); /* Get text, data & bss offsets. */
2270 /* Use the previously fetched status. */
2271 gdb_assert (wait_status
!= NULL
);
2272 strcpy (rs
->buf
, wait_status
);
2273 rs
->cached_wait_status
= 1;
2276 start_remote (args
->from_tty
); /* Initialize gdb process mechanisms. */
2279 /* Open a connection to a remote debugger.
2280 NAME is the filename used for communication. */
2283 remote_open (char *name
, int from_tty
)
2285 remote_open_1 (name
, from_tty
, &remote_ops
, 0);
2288 /* Open a connection to a remote debugger using the extended
2289 remote gdb protocol. NAME is the filename used for communication. */
2292 extended_remote_open (char *name
, int from_tty
)
2294 remote_open_1 (name
, from_tty
, &extended_remote_ops
, 1 /*extended_p */);
2297 /* Generic code for opening a connection to a remote target. */
2300 init_all_packet_configs (void)
2303 for (i
= 0; i
< PACKET_MAX
; i
++)
2304 update_packet_config (&remote_protocol_packets
[i
]);
2307 /* Symbol look-up. */
2310 remote_check_symbols (struct objfile
*objfile
)
2312 struct remote_state
*rs
= get_remote_state ();
2313 char *msg
, *reply
, *tmp
;
2314 struct minimal_symbol
*sym
;
2317 if (remote_protocol_packets
[PACKET_qSymbol
].support
== PACKET_DISABLE
)
2320 /* Allocate a message buffer. We can't reuse the input buffer in RS,
2321 because we need both at the same time. */
2322 msg
= alloca (get_remote_packet_size ());
2324 /* Invite target to request symbol lookups. */
2326 putpkt ("qSymbol::");
2327 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2328 packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_qSymbol
]);
2331 while (strncmp (reply
, "qSymbol:", 8) == 0)
2334 end
= hex2bin (tmp
, (gdb_byte
*) msg
, strlen (tmp
) / 2);
2336 sym
= lookup_minimal_symbol (msg
, NULL
, NULL
);
2338 xsnprintf (msg
, get_remote_packet_size (), "qSymbol::%s", &reply
[8]);
2341 CORE_ADDR sym_addr
= SYMBOL_VALUE_ADDRESS (sym
);
2343 /* If this is a function address, return the start of code
2344 instead of any data function descriptor. */
2345 sym_addr
= gdbarch_convert_from_func_ptr_addr (current_gdbarch
,
2349 xsnprintf (msg
, get_remote_packet_size (), "qSymbol:%s:%s",
2350 paddr_nz (sym_addr
), &reply
[8]);
2354 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2359 static struct serial
*
2360 remote_serial_open (char *name
)
2362 static int udp_warning
= 0;
2364 /* FIXME: Parsing NAME here is a hack. But we want to warn here instead
2365 of in ser-tcp.c, because it is the remote protocol assuming that the
2366 serial connection is reliable and not the serial connection promising
2368 if (!udp_warning
&& strncmp (name
, "udp:", 4) == 0)
2371 The remote protocol may be unreliable over UDP.\n\
2372 Some events may be lost, rendering further debugging impossible."));
2376 return serial_open (name
);
2379 /* This type describes each known response to the qSupported
2381 struct protocol_feature
2383 /* The name of this protocol feature. */
2386 /* The default for this protocol feature. */
2387 enum packet_support default_support
;
2389 /* The function to call when this feature is reported, or after
2390 qSupported processing if the feature is not supported.
2391 The first argument points to this structure. The second
2392 argument indicates whether the packet requested support be
2393 enabled, disabled, or probed (or the default, if this function
2394 is being called at the end of processing and this feature was
2395 not reported). The third argument may be NULL; if not NULL, it
2396 is a NUL-terminated string taken from the packet following
2397 this feature's name and an equals sign. */
2398 void (*func
) (const struct protocol_feature
*, enum packet_support
,
2401 /* The corresponding packet for this feature. Only used if
2402 FUNC is remote_supported_packet. */
2407 remote_supported_packet (const struct protocol_feature
*feature
,
2408 enum packet_support support
,
2409 const char *argument
)
2413 warning (_("Remote qSupported response supplied an unexpected value for"
2414 " \"%s\"."), feature
->name
);
2418 if (remote_protocol_packets
[feature
->packet
].support
2419 == PACKET_SUPPORT_UNKNOWN
)
2420 remote_protocol_packets
[feature
->packet
].support
= support
;
2424 remote_packet_size (const struct protocol_feature
*feature
,
2425 enum packet_support support
, const char *value
)
2427 struct remote_state
*rs
= get_remote_state ();
2432 if (support
!= PACKET_ENABLE
)
2435 if (value
== NULL
|| *value
== '\0')
2437 warning (_("Remote target reported \"%s\" without a size."),
2443 packet_size
= strtol (value
, &value_end
, 16);
2444 if (errno
!= 0 || *value_end
!= '\0' || packet_size
< 0)
2446 warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."),
2447 feature
->name
, value
);
2451 if (packet_size
> MAX_REMOTE_PACKET_SIZE
)
2453 warning (_("limiting remote suggested packet size (%d bytes) to %d"),
2454 packet_size
, MAX_REMOTE_PACKET_SIZE
);
2455 packet_size
= MAX_REMOTE_PACKET_SIZE
;
2458 /* Record the new maximum packet size. */
2459 rs
->explicit_packet_size
= packet_size
;
2462 static struct protocol_feature remote_protocol_features
[] = {
2463 { "PacketSize", PACKET_DISABLE
, remote_packet_size
, -1 },
2464 { "qXfer:auxv:read", PACKET_DISABLE
, remote_supported_packet
,
2465 PACKET_qXfer_auxv
},
2466 { "qXfer:features:read", PACKET_DISABLE
, remote_supported_packet
,
2467 PACKET_qXfer_features
},
2468 { "qXfer:libraries:read", PACKET_DISABLE
, remote_supported_packet
,
2469 PACKET_qXfer_libraries
},
2470 { "qXfer:memory-map:read", PACKET_DISABLE
, remote_supported_packet
,
2471 PACKET_qXfer_memory_map
},
2472 { "qXfer:spu:read", PACKET_DISABLE
, remote_supported_packet
,
2473 PACKET_qXfer_spu_read
},
2474 { "qXfer:spu:write", PACKET_DISABLE
, remote_supported_packet
,
2475 PACKET_qXfer_spu_write
},
2476 { "QPassSignals", PACKET_DISABLE
, remote_supported_packet
,
2477 PACKET_QPassSignals
},
2481 remote_query_supported (void)
2483 struct remote_state
*rs
= get_remote_state ();
2486 unsigned char seen
[ARRAY_SIZE (remote_protocol_features
)];
2488 /* The packet support flags are handled differently for this packet
2489 than for most others. We treat an error, a disabled packet, and
2490 an empty response identically: any features which must be reported
2491 to be used will be automatically disabled. An empty buffer
2492 accomplishes this, since that is also the representation for a list
2493 containing no features. */
2496 if (remote_protocol_packets
[PACKET_qSupported
].support
!= PACKET_DISABLE
)
2498 putpkt ("qSupported");
2499 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2501 /* If an error occured, warn, but do not return - just reset the
2502 buffer to empty and go on to disable features. */
2503 if (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_qSupported
])
2506 warning (_("Remote failure reply: %s"), rs
->buf
);
2511 memset (seen
, 0, sizeof (seen
));
2516 enum packet_support is_supported
;
2517 char *p
, *end
, *name_end
, *value
;
2519 /* First separate out this item from the rest of the packet. If
2520 there's another item after this, we overwrite the separator
2521 (terminated strings are much easier to work with). */
2523 end
= strchr (p
, ';');
2526 end
= p
+ strlen (p
);
2536 warning (_("empty item in \"qSupported\" response"));
2541 name_end
= strchr (p
, '=');
2544 /* This is a name=value entry. */
2545 is_supported
= PACKET_ENABLE
;
2546 value
= name_end
+ 1;
2555 is_supported
= PACKET_ENABLE
;
2559 is_supported
= PACKET_DISABLE
;
2563 is_supported
= PACKET_SUPPORT_UNKNOWN
;
2567 warning (_("unrecognized item \"%s\" in \"qSupported\" response"), p
);
2573 for (i
= 0; i
< ARRAY_SIZE (remote_protocol_features
); i
++)
2574 if (strcmp (remote_protocol_features
[i
].name
, p
) == 0)
2576 const struct protocol_feature
*feature
;
2579 feature
= &remote_protocol_features
[i
];
2580 feature
->func (feature
, is_supported
, value
);
2585 /* If we increased the packet size, make sure to increase the global
2586 buffer size also. We delay this until after parsing the entire
2587 qSupported packet, because this is the same buffer we were
2589 if (rs
->buf_size
< rs
->explicit_packet_size
)
2591 rs
->buf_size
= rs
->explicit_packet_size
;
2592 rs
->buf
= xrealloc (rs
->buf
, rs
->buf_size
);
2595 /* Handle the defaults for unmentioned features. */
2596 for (i
= 0; i
< ARRAY_SIZE (remote_protocol_features
); i
++)
2599 const struct protocol_feature
*feature
;
2601 feature
= &remote_protocol_features
[i
];
2602 feature
->func (feature
, feature
->default_support
, NULL
);
2608 remote_open_1 (char *name
, int from_tty
, struct target_ops
*target
, int extended_p
)
2610 struct remote_state
*rs
= get_remote_state ();
2612 error (_("To open a remote debug connection, you need to specify what\n"
2613 "serial device is attached to the remote system\n"
2614 "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."));
2616 /* See FIXME above. */
2617 if (!remote_async_permitted
)
2618 wait_forever_enabled_p
= 1;
2620 /* If we're connected to a running target, target_preopen will kill it.
2621 But if we're connected to a target system with no running process,
2622 then we will still be connected when it returns. Ask this question
2623 first, before target_preopen has a chance to kill anything. */
2624 if (remote_desc
!= NULL
&& !target_has_execution
)
2627 || query (_("Already connected to a remote target. Disconnect? ")))
2630 error (_("Still connected."));
2633 target_preopen (from_tty
);
2635 unpush_target (target
);
2637 /* This time without a query. If we were connected to an
2638 extended-remote target and target_preopen killed the running
2639 process, we may still be connected. If we are starting "target
2640 remote" now, the extended-remote target will not have been
2641 removed by unpush_target. */
2642 if (remote_desc
!= NULL
&& !target_has_execution
)
2645 /* Make sure we send the passed signals list the next time we resume. */
2646 xfree (last_pass_packet
);
2647 last_pass_packet
= NULL
;
2649 remote_fileio_reset ();
2650 reopen_exec_file ();
2653 remote_desc
= remote_serial_open (name
);
2655 perror_with_name (name
);
2657 if (baud_rate
!= -1)
2659 if (serial_setbaudrate (remote_desc
, baud_rate
))
2661 /* The requested speed could not be set. Error out to
2662 top level after closing remote_desc. Take care to
2663 set remote_desc to NULL to avoid closing remote_desc
2665 serial_close (remote_desc
);
2667 perror_with_name (name
);
2671 serial_raw (remote_desc
);
2673 /* If there is something sitting in the buffer we might take it as a
2674 response to a command, which would be bad. */
2675 serial_flush_input (remote_desc
);
2679 puts_filtered ("Remote debugging using ");
2680 puts_filtered (name
);
2681 puts_filtered ("\n");
2683 push_target (target
); /* Switch to using remote target now. */
2685 /* Assume that the target is running, unless we learn otherwise. */
2686 target_mark_running (target
);
2688 /* Reset the target state; these things will be queried either by
2689 remote_query_supported or as they are needed. */
2690 init_all_packet_configs ();
2691 rs
->explicit_packet_size
= 0;
2693 general_thread
= -2;
2694 continue_thread
= -2;
2696 /* Probe for ability to use "ThreadInfo" query, as required. */
2697 use_threadinfo_query
= 1;
2698 use_threadextra_query
= 1;
2700 /* The first packet we send to the target is the optional "supported
2701 packets" request. If the target can answer this, it will tell us
2702 which later probes to skip. */
2703 remote_query_supported ();
2705 /* Next, if the target can specify a description, read it. We do
2706 this before anything involving memory or registers. */
2707 target_find_description ();
2709 if (remote_async_permitted
)
2711 /* With this target we start out by owning the terminal. */
2712 remote_async_terminal_ours_p
= 1;
2714 /* FIXME: cagney/1999-09-23: During the initial connection it is
2715 assumed that the target is already ready and able to respond to
2716 requests. Unfortunately remote_start_remote() eventually calls
2717 wait_for_inferior() with no timeout. wait_forever_enabled_p gets
2718 around this. Eventually a mechanism that allows
2719 wait_for_inferior() to expect/get timeouts will be
2721 wait_forever_enabled_p
= 0;
2724 /* First delete any symbols previously loaded from shared libraries. */
2725 no_shared_libraries (NULL
, 0);
2727 /* Start the remote connection. If error() or QUIT, discard this
2728 target (we'd otherwise be in an inconsistent state) and then
2729 propogate the error on up the exception chain. This ensures that
2730 the caller doesn't stumble along blindly assuming that the
2731 function succeeded. The CLI doesn't have this problem but other
2732 UI's, such as MI do.
2734 FIXME: cagney/2002-05-19: Instead of re-throwing the exception,
2735 this function should return an error indication letting the
2736 caller restore the previous state. Unfortunately the command
2737 ``target remote'' is directly wired to this function making that
2738 impossible. On a positive note, the CLI side of this problem has
2739 been fixed - the function set_cmd_context() makes it possible for
2740 all the ``target ....'' commands to share a common callback
2741 function. See cli-dump.c. */
2743 struct gdb_exception ex
;
2744 struct start_remote_args args
;
2746 args
.from_tty
= from_tty
;
2747 args
.target
= target
;
2748 args
.extended_p
= extended_p
;
2750 ex
= catch_exception (uiout
, remote_start_remote
, &args
, RETURN_MASK_ALL
);
2754 if (remote_async_permitted
)
2755 wait_forever_enabled_p
= 1;
2756 throw_exception (ex
);
2760 if (remote_async_permitted
)
2761 wait_forever_enabled_p
= 1;
2765 /* Tell the remote that we are using the extended protocol. */
2767 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2770 /* If we connected to a live target, do some additional setup. */
2771 if (target_has_execution
)
2773 if (exec_bfd
) /* No use without an exec file. */
2774 remote_check_symbols (symfile_objfile
);
2778 /* This takes a program previously attached to and detaches it. After
2779 this is done, GDB can be used to debug some other program. We
2780 better not have left any breakpoints in the target program or it'll
2781 die when it hits one. */
2784 remote_detach_1 (char *args
, int from_tty
, int extended
)
2786 struct remote_state
*rs
= get_remote_state ();
2789 error (_("Argument given to \"detach\" when remotely debugging."));
2791 if (!target_has_execution
)
2792 error (_("No process to detach from."));
2794 /* Tell the remote target to detach. */
2795 strcpy (rs
->buf
, "D");
2797 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2799 if (rs
->buf
[0] == 'E')
2800 error (_("Can't detach process."));
2802 /* Unregister the file descriptor from the event loop. */
2803 if (target_is_async_p ())
2804 serial_async (remote_desc
, NULL
, 0);
2806 target_mourn_inferior ();
2810 puts_filtered ("Detached from remote process.\n");
2812 puts_filtered ("Ending remote debugging.\n");
2817 remote_detach (char *args
, int from_tty
)
2819 remote_detach_1 (args
, from_tty
, 0);
2823 extended_remote_detach (char *args
, int from_tty
)
2825 remote_detach_1 (args
, from_tty
, 1);
2828 /* Same as remote_detach, but don't send the "D" packet; just disconnect. */
2831 remote_disconnect (struct target_ops
*target
, char *args
, int from_tty
)
2834 error (_("Argument given to \"disconnect\" when remotely debugging."));
2836 /* Unregister the file descriptor from the event loop. */
2837 if (target_is_async_p ())
2838 serial_async (remote_desc
, NULL
, 0);
2840 /* Make sure we unpush even the extended remote targets; mourn
2841 won't do it. So call remote_mourn_1 directly instead of
2842 target_mourn_inferior. */
2843 remote_mourn_1 (target
);
2846 puts_filtered ("Ending remote debugging.\n");
2849 /* Attach to the process specified by ARGS. If FROM_TTY is non-zero,
2850 be chatty about it. */
2853 extended_remote_attach_1 (struct target_ops
*target
, char *args
, int from_tty
)
2855 struct remote_state
*rs
= get_remote_state ();
2858 char *wait_status
= NULL
;
2861 error_no_arg (_("process-id to attach"));
2864 pid
= strtol (args
, &dummy
, 0);
2865 /* Some targets don't set errno on errors, grrr! */
2866 if (pid
== 0 && args
== dummy
)
2867 error (_("Illegal process-id: %s."), args
);
2869 if (remote_protocol_packets
[PACKET_vAttach
].support
== PACKET_DISABLE
)
2870 error (_("This target does not support attaching to a process"));
2872 sprintf (rs
->buf
, "vAttach;%x", pid
);
2874 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2876 if (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_vAttach
]) == PACKET_OK
)
2879 printf_unfiltered (_("Attached to %s\n"),
2880 target_pid_to_str (pid_to_ptid (pid
)));
2882 /* Save the reply for later. */
2883 wait_status
= alloca (strlen (rs
->buf
) + 1);
2884 strcpy (wait_status
, rs
->buf
);
2886 else if (remote_protocol_packets
[PACKET_vAttach
].support
== PACKET_DISABLE
)
2887 error (_("This target does not support attaching to a process"));
2889 error (_("Attaching to %s failed"),
2890 target_pid_to_str (pid_to_ptid (pid
)));
2892 target_mark_running (target
);
2893 inferior_ptid
= pid_to_ptid (pid
);
2896 /* Next, if the target can specify a description, read it. We do
2897 this before anything involving memory or registers. */
2898 target_find_description ();
2900 /* Use the previously fetched status. */
2901 gdb_assert (wait_status
!= NULL
);
2902 strcpy (rs
->buf
, wait_status
);
2903 rs
->cached_wait_status
= 1;
2907 extended_remote_attach (char *args
, int from_tty
)
2909 extended_remote_attach_1 (&extended_remote_ops
, args
, from_tty
);
2912 /* Convert hex digit A to a number. */
2917 if (a
>= '0' && a
<= '9')
2919 else if (a
>= 'a' && a
<= 'f')
2920 return a
- 'a' + 10;
2921 else if (a
>= 'A' && a
<= 'F')
2922 return a
- 'A' + 10;
2924 error (_("Reply contains invalid hex digit %d"), a
);
2928 hex2bin (const char *hex
, gdb_byte
*bin
, int count
)
2932 for (i
= 0; i
< count
; i
++)
2934 if (hex
[0] == 0 || hex
[1] == 0)
2936 /* Hex string is short, or of uneven length.
2937 Return the count that has been converted so far. */
2940 *bin
++ = fromhex (hex
[0]) * 16 + fromhex (hex
[1]);
2946 /* Convert number NIB to a hex digit. */
2954 return 'a' + nib
- 10;
2958 bin2hex (const gdb_byte
*bin
, char *hex
, int count
)
2961 /* May use a length, or a nul-terminated string as input. */
2963 count
= strlen ((char *) bin
);
2965 for (i
= 0; i
< count
; i
++)
2967 *hex
++ = tohex ((*bin
>> 4) & 0xf);
2968 *hex
++ = tohex (*bin
++ & 0xf);
2974 /* Check for the availability of vCont. This function should also check
2978 remote_vcont_probe (struct remote_state
*rs
)
2982 strcpy (rs
->buf
, "vCont?");
2984 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2987 /* Make sure that the features we assume are supported. */
2988 if (strncmp (buf
, "vCont", 5) == 0)
2991 int support_s
, support_S
, support_c
, support_C
;
2997 while (p
&& *p
== ';')
3000 if (*p
== 's' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
3002 else if (*p
== 'S' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
3004 else if (*p
== 'c' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
3006 else if (*p
== 'C' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
3009 p
= strchr (p
, ';');
3012 /* If s, S, c, and C are not all supported, we can't use vCont. Clearing
3013 BUF will make packet_ok disable the packet. */
3014 if (!support_s
|| !support_S
|| !support_c
|| !support_C
)
3018 packet_ok (buf
, &remote_protocol_packets
[PACKET_vCont
]);
3021 /* Resume the remote inferior by using a "vCont" packet. The thread
3022 to be resumed is PTID; STEP and SIGGNAL indicate whether the
3023 resumed thread should be single-stepped and/or signalled. If PTID's
3024 PID is -1, then all threads are resumed; the thread to be stepped and/or
3025 signalled is given in the global INFERIOR_PTID. This function returns
3026 non-zero iff it resumes the inferior.
3028 This function issues a strict subset of all possible vCont commands at the
3032 remote_vcont_resume (ptid_t ptid
, int step
, enum target_signal siggnal
)
3034 struct remote_state
*rs
= get_remote_state ();
3035 int pid
= PIDGET (ptid
);
3037 struct cleanup
*old_cleanup
;
3039 if (remote_protocol_packets
[PACKET_vCont
].support
== PACKET_SUPPORT_UNKNOWN
)
3040 remote_vcont_probe (rs
);
3042 if (remote_protocol_packets
[PACKET_vCont
].support
== PACKET_DISABLE
)
3045 /* If we could generate a wider range of packets, we'd have to worry
3046 about overflowing BUF. Should there be a generic
3047 "multi-part-packet" packet? */
3049 if (PIDGET (inferior_ptid
) == MAGIC_NULL_PID
)
3051 /* MAGIC_NULL_PTID means that we don't have any active threads, so we
3052 don't have any PID numbers the inferior will understand. Make sure
3053 to only send forms that do not specify a PID. */
3054 if (step
&& siggnal
!= TARGET_SIGNAL_0
)
3055 outbuf
= xstrprintf ("vCont;S%02x", siggnal
);
3057 outbuf
= xstrprintf ("vCont;s");
3058 else if (siggnal
!= TARGET_SIGNAL_0
)
3059 outbuf
= xstrprintf ("vCont;C%02x", siggnal
);
3061 outbuf
= xstrprintf ("vCont;c");
3065 /* Resume all threads, with preference for INFERIOR_PTID. */
3066 if (step
&& siggnal
!= TARGET_SIGNAL_0
)
3067 outbuf
= xstrprintf ("vCont;S%02x:%x;c", siggnal
,
3068 PIDGET (inferior_ptid
));
3070 outbuf
= xstrprintf ("vCont;s:%x;c", PIDGET (inferior_ptid
));
3071 else if (siggnal
!= TARGET_SIGNAL_0
)
3072 outbuf
= xstrprintf ("vCont;C%02x:%x;c", siggnal
,
3073 PIDGET (inferior_ptid
));
3075 outbuf
= xstrprintf ("vCont;c");
3079 /* Scheduler locking; resume only PTID. */
3080 if (step
&& siggnal
!= TARGET_SIGNAL_0
)
3081 outbuf
= xstrprintf ("vCont;S%02x:%x", siggnal
, pid
);
3083 outbuf
= xstrprintf ("vCont;s:%x", pid
);
3084 else if (siggnal
!= TARGET_SIGNAL_0
)
3085 outbuf
= xstrprintf ("vCont;C%02x:%x", siggnal
, pid
);
3087 outbuf
= xstrprintf ("vCont;c:%x", pid
);
3090 gdb_assert (outbuf
&& strlen (outbuf
) < get_remote_packet_size ());
3091 old_cleanup
= make_cleanup (xfree
, outbuf
);
3095 do_cleanups (old_cleanup
);
3100 /* Tell the remote machine to resume. */
3102 static enum target_signal last_sent_signal
= TARGET_SIGNAL_0
;
3104 static int last_sent_step
;
3107 remote_resume (ptid_t ptid
, int step
, enum target_signal siggnal
)
3109 struct remote_state
*rs
= get_remote_state ();
3111 int pid
= PIDGET (ptid
);
3113 last_sent_signal
= siggnal
;
3114 last_sent_step
= step
;
3116 /* Update the inferior on signals to silently pass, if they've changed. */
3117 remote_pass_signals ();
3119 /* The vCont packet doesn't need to specify threads via Hc. */
3120 if (remote_vcont_resume (ptid
, step
, siggnal
))
3123 /* All other supported resume packets do use Hc, so call set_thread. */
3125 set_thread (0, 0); /* Run any thread. */
3127 set_thread (pid
, 0); /* Run this thread. */
3130 if (siggnal
!= TARGET_SIGNAL_0
)
3132 buf
[0] = step
? 'S' : 'C';
3133 buf
[1] = tohex (((int) siggnal
>> 4) & 0xf);
3134 buf
[2] = tohex (((int) siggnal
) & 0xf);
3138 strcpy (buf
, step
? "s" : "c");
3143 /* We are about to start executing the inferior, let's register it
3144 with the event loop. NOTE: this is the one place where all the
3145 execution commands end up. We could alternatively do this in each
3146 of the execution commands in infcmd.c. */
3147 /* FIXME: ezannoni 1999-09-28: We may need to move this out of here
3148 into infcmd.c in order to allow inferior function calls to work
3149 NOT asynchronously. */
3150 if (target_can_async_p ())
3151 target_async (inferior_event_handler
, 0);
3152 /* Tell the world that the target is now executing. */
3153 /* FIXME: cagney/1999-09-23: Is it the targets responsibility to set
3154 this? Instead, should the client of target just assume (for
3155 async targets) that the target is going to start executing? Is
3156 this information already found in the continuation block? */
3157 if (target_is_async_p ())
3158 target_executing
= 1;
3162 /* Set up the signal handler for SIGINT, while the target is
3163 executing, ovewriting the 'regular' SIGINT signal handler. */
3165 initialize_sigint_signal_handler (void)
3167 signal (SIGINT
, handle_remote_sigint
);
3170 /* Signal handler for SIGINT, while the target is executing. */
3172 handle_remote_sigint (int sig
)
3174 signal (sig
, handle_remote_sigint_twice
);
3175 mark_async_signal_handler_wrapper (sigint_remote_token
);
3178 /* Signal handler for SIGINT, installed after SIGINT has already been
3179 sent once. It will take effect the second time that the user sends
3182 handle_remote_sigint_twice (int sig
)
3184 signal (sig
, handle_remote_sigint
);
3185 mark_async_signal_handler_wrapper (sigint_remote_twice_token
);
3188 /* Perform the real interruption of the target execution, in response
3191 async_remote_interrupt (gdb_client_data arg
)
3194 fprintf_unfiltered (gdb_stdlog
, "remote_interrupt called\n");
3199 /* Perform interrupt, if the first attempt did not succeed. Just give
3200 up on the target alltogether. */
3202 async_remote_interrupt_twice (gdb_client_data arg
)
3205 fprintf_unfiltered (gdb_stdlog
, "remote_interrupt_twice called\n");
3210 /* Reinstall the usual SIGINT handlers, after the target has
3213 cleanup_sigint_signal_handler (void *dummy
)
3215 signal (SIGINT
, handle_sigint
);
3218 /* Send ^C to target to halt it. Target will respond, and send us a
3220 static void (*ofunc
) (int);
3222 /* The command line interface's stop routine. This function is installed
3223 as a signal handler for SIGINT. The first time a user requests a
3224 stop, we call remote_stop to send a break or ^C. If there is no
3225 response from the target (it didn't stop when the user requested it),
3226 we ask the user if he'd like to detach from the target. */
3228 remote_interrupt (int signo
)
3230 /* If this doesn't work, try more severe steps. */
3231 signal (signo
, remote_interrupt_twice
);
3233 gdb_call_async_signal_handler (sigint_remote_token
, 1);
3236 /* The user typed ^C twice. */
3239 remote_interrupt_twice (int signo
)
3241 signal (signo
, ofunc
);
3242 gdb_call_async_signal_handler (sigint_remote_twice_token
, 1);
3243 signal (signo
, remote_interrupt
);
3246 /* This is the generic stop called via the target vector. When a target
3247 interrupt is requested, either by the command line or the GUI, we
3248 will eventually end up here. */
3252 /* Send a break or a ^C, depending on user preference. */
3254 fprintf_unfiltered (gdb_stdlog
, "remote_stop called\n");
3257 serial_send_break (remote_desc
);
3259 serial_write (remote_desc
, "\003", 1);
3262 /* Ask the user what to do when an interrupt is received. */
3265 interrupt_query (void)
3267 target_terminal_ours ();
3269 if (query ("Interrupted while waiting for the program.\n\
3270 Give up (and stop debugging it)? "))
3272 target_mourn_inferior ();
3273 signal (SIGINT
, handle_sigint
);
3274 deprecated_throw_reason (RETURN_QUIT
);
3277 target_terminal_inferior ();
3280 /* Enable/disable target terminal ownership. Most targets can use
3281 terminal groups to control terminal ownership. Remote targets are
3282 different in that explicit transfer of ownership to/from GDB/target
3286 remote_terminal_inferior (void)
3288 if (!remote_async_permitted
)
3289 /* Nothing to do. */
3292 /* FIXME: cagney/1999-09-27: Shouldn't need to test for
3293 sync_execution here. This function should only be called when
3294 GDB is resuming the inferior in the forground. A background
3295 resume (``run&'') should leave GDB in control of the terminal and
3296 consequently should not call this code. */
3297 if (!sync_execution
)
3299 /* FIXME: cagney/1999-09-27: Closely related to the above. Make
3300 calls target_terminal_*() idenpotent. The event-loop GDB talking
3301 to an asynchronous target with a synchronous command calls this
3302 function from both event-top.c and infrun.c/infcmd.c. Once GDB
3303 stops trying to transfer the terminal to the target when it
3304 shouldn't this guard can go away. */
3305 if (!remote_async_terminal_ours_p
)
3307 delete_file_handler (input_fd
);
3308 remote_async_terminal_ours_p
= 0;
3309 initialize_sigint_signal_handler ();
3310 /* NOTE: At this point we could also register our selves as the
3311 recipient of all input. Any characters typed could then be
3312 passed on down to the target. */
3316 remote_terminal_ours (void)
3318 if (!remote_async_permitted
)
3319 /* Nothing to do. */
3322 /* See FIXME in remote_terminal_inferior. */
3323 if (!sync_execution
)
3325 /* See FIXME in remote_terminal_inferior. */
3326 if (remote_async_terminal_ours_p
)
3328 cleanup_sigint_signal_handler (NULL
);
3329 add_file_handler (input_fd
, stdin_event_handler
, 0);
3330 remote_async_terminal_ours_p
= 1;
3334 remote_console_output (char *msg
)
3338 for (p
= msg
; p
[0] && p
[1]; p
+= 2)
3341 char c
= fromhex (p
[0]) * 16 + fromhex (p
[1]);
3344 fputs_unfiltered (tb
, gdb_stdtarg
);
3346 gdb_flush (gdb_stdtarg
);
3349 /* Wait until the remote machine stops, then return,
3350 storing status in STATUS just as `wait' would.
3351 Returns "pid", which in the case of a multi-threaded
3352 remote OS, is the thread-id. */
3355 remote_wait (ptid_t ptid
, struct target_waitstatus
*status
)
3357 struct remote_state
*rs
= get_remote_state ();
3358 struct remote_arch_state
*rsa
= get_remote_arch_state ();
3359 ULONGEST thread_num
= -1;
3361 int solibs_changed
= 0;
3363 status
->kind
= TARGET_WAITKIND_EXITED
;
3364 status
->value
.integer
= 0;
3370 if (rs
->cached_wait_status
)
3371 /* Use the cached wait status, but only once. */
3372 rs
->cached_wait_status
= 0;
3375 if (!target_is_async_p ())
3377 ofunc
= signal (SIGINT
, remote_interrupt
);
3378 /* If the user hit C-c before this packet, or between packets,
3379 pretend that it was hit right here. */
3383 remote_interrupt (SIGINT
);
3386 /* FIXME: cagney/1999-09-27: If we're in async mode we should
3387 _never_ wait for ever -> test on target_is_async_p().
3388 However, before we do that we need to ensure that the caller
3389 knows how to take the target into/out of async mode. */
3390 getpkt (&rs
->buf
, &rs
->buf_size
, wait_forever_enabled_p
);
3391 if (!target_is_async_p ())
3392 signal (SIGINT
, ofunc
);
3397 remote_stopped_by_watchpoint_p
= 0;
3401 case 'E': /* Error of some sort. */
3402 /* We're out of sync with the target now. Did it continue or not?
3403 Not is more likely, so report a stop. */
3404 warning (_("Remote failure reply: %s"), buf
);
3405 status
->kind
= TARGET_WAITKIND_STOPPED
;
3406 status
->value
.sig
= TARGET_SIGNAL_0
;
3408 case 'F': /* File-I/O request. */
3409 remote_fileio_request (buf
);
3411 case 'T': /* Status with PC, SP, FP, ... */
3413 gdb_byte regs
[MAX_REGISTER_SIZE
];
3415 /* Expedited reply, containing Signal, {regno, reg} repeat. */
3416 /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where
3418 n... = register number
3419 r... = register contents
3421 p
= &buf
[3]; /* after Txx */
3430 /* If the packet contains a register number, save it
3431 in pnum and set p1 to point to the character
3432 following it. Otherwise p1 points to p. */
3434 /* If this packet is an awatch packet, don't parse the
3435 'a' as a register number. */
3437 if (strncmp (p
, "awatch", strlen("awatch")) != 0)
3439 /* Read the ``P'' register number. */
3440 pnum
= strtol (p
, &p_temp
, 16);
3446 if (p1
== p
) /* No register number present here. */
3448 p1
= strchr (p
, ':');
3450 error (_("Malformed packet(a) (missing colon): %s\n\
3453 if (strncmp (p
, "thread", p1
- p
) == 0)
3455 p_temp
= unpack_varlen_hex (++p1
, &thread_num
);
3456 record_currthread (thread_num
);
3459 else if ((strncmp (p
, "watch", p1
- p
) == 0)
3460 || (strncmp (p
, "rwatch", p1
- p
) == 0)
3461 || (strncmp (p
, "awatch", p1
- p
) == 0))
3463 remote_stopped_by_watchpoint_p
= 1;
3464 p
= unpack_varlen_hex (++p1
, &addr
);
3465 remote_watch_data_address
= (CORE_ADDR
)addr
;
3467 else if (strncmp (p
, "library", p1
- p
) == 0)
3471 while (*p_temp
&& *p_temp
!= ';')
3479 /* Silently skip unknown optional info. */
3480 p_temp
= strchr (p1
+ 1, ';');
3487 struct packet_reg
*reg
= packet_reg_from_pnum (rsa
, pnum
);
3491 error (_("Malformed packet(b) (missing colon): %s\n\
3497 error (_("Remote sent bad register number %s: %s\n\
3499 phex_nz (pnum
, 0), p
, buf
);
3501 fieldsize
= hex2bin (p
, regs
,
3502 register_size (current_gdbarch
,
3505 if (fieldsize
< register_size (current_gdbarch
,
3507 warning (_("Remote reply is too short: %s"), buf
);
3508 regcache_raw_supply (get_current_regcache (),
3513 error (_("Remote register badly formatted: %s\nhere: %s"),
3519 case 'S': /* Old style status, just signal only. */
3521 status
->kind
= TARGET_WAITKIND_LOADED
;
3524 status
->kind
= TARGET_WAITKIND_STOPPED
;
3525 status
->value
.sig
= (enum target_signal
)
3526 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
3529 case 'W': /* Target exited. */
3531 /* The remote process exited. */
3532 status
->kind
= TARGET_WAITKIND_EXITED
;
3533 status
->value
.integer
= (fromhex (buf
[1]) << 4) + fromhex (buf
[2]);
3537 status
->kind
= TARGET_WAITKIND_SIGNALLED
;
3538 status
->value
.sig
= (enum target_signal
)
3539 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
3542 case 'O': /* Console output. */
3543 remote_console_output (buf
+ 1);
3544 if (target_can_async_p ())
3546 /* Return immediately to the event loop. The event loop
3547 will still be waiting on the inferior afterwards. */
3548 status
->kind
= TARGET_WAITKIND_IGNORE
;
3554 if (last_sent_signal
!= TARGET_SIGNAL_0
)
3556 /* Zero length reply means that we tried 'S' or 'C' and
3557 the remote system doesn't support it. */
3558 target_terminal_ours_for_output ();
3560 ("Can't send signals to this remote system. %s not sent.\n",
3561 target_signal_to_name (last_sent_signal
));
3562 last_sent_signal
= TARGET_SIGNAL_0
;
3563 target_terminal_inferior ();
3565 strcpy ((char *) buf
, last_sent_step
? "s" : "c");
3566 putpkt ((char *) buf
);
3569 /* else fallthrough */
3571 warning (_("Invalid remote reply: %s"), buf
);
3576 if (thread_num
!= -1)
3578 return pid_to_ptid (thread_num
);
3580 return inferior_ptid
;
3583 /* Fetch a single register using a 'p' packet. */
3586 fetch_register_using_p (struct regcache
*regcache
, struct packet_reg
*reg
)
3588 struct remote_state
*rs
= get_remote_state ();
3590 char regp
[MAX_REGISTER_SIZE
];
3593 if (remote_protocol_packets
[PACKET_p
].support
== PACKET_DISABLE
)
3596 if (reg
->pnum
== -1)
3601 p
+= hexnumstr (p
, reg
->pnum
);
3603 remote_send (&rs
->buf
, &rs
->buf_size
);
3607 switch (packet_ok (buf
, &remote_protocol_packets
[PACKET_p
]))
3611 case PACKET_UNKNOWN
:
3614 error (_("Could not fetch register \"%s\""),
3615 gdbarch_register_name (get_regcache_arch (regcache
), reg
->regnum
));
3618 /* If this register is unfetchable, tell the regcache. */
3621 regcache_raw_supply (regcache
, reg
->regnum
, NULL
);
3625 /* Otherwise, parse and supply the value. */
3631 error (_("fetch_register_using_p: early buf termination"));
3633 regp
[i
++] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
3636 regcache_raw_supply (regcache
, reg
->regnum
, regp
);
3640 /* Fetch the registers included in the target's 'g' packet. */
3643 send_g_packet (void)
3645 struct remote_state
*rs
= get_remote_state ();
3650 sprintf (rs
->buf
, "g");
3651 remote_send (&rs
->buf
, &rs
->buf_size
);
3653 /* We can get out of synch in various cases. If the first character
3654 in the buffer is not a hex character, assume that has happened
3655 and try to fetch another packet to read. */
3656 while ((rs
->buf
[0] < '0' || rs
->buf
[0] > '9')
3657 && (rs
->buf
[0] < 'A' || rs
->buf
[0] > 'F')
3658 && (rs
->buf
[0] < 'a' || rs
->buf
[0] > 'f')
3659 && rs
->buf
[0] != 'x') /* New: unavailable register value. */
3662 fprintf_unfiltered (gdb_stdlog
,
3663 "Bad register packet; fetching a new packet\n");
3664 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3667 buf_len
= strlen (rs
->buf
);
3669 /* Sanity check the received packet. */
3670 if (buf_len
% 2 != 0)
3671 error (_("Remote 'g' packet reply is of odd length: %s"), rs
->buf
);
3677 process_g_packet (struct regcache
*regcache
)
3679 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
3680 struct remote_state
*rs
= get_remote_state ();
3681 struct remote_arch_state
*rsa
= get_remote_arch_state ();
3686 buf_len
= strlen (rs
->buf
);
3688 /* Further sanity checks, with knowledge of the architecture. */
3689 if (buf_len
> 2 * rsa
->sizeof_g_packet
)
3690 error (_("Remote 'g' packet reply is too long: %s"), rs
->buf
);
3692 /* Save the size of the packet sent to us by the target. It is used
3693 as a heuristic when determining the max size of packets that the
3694 target can safely receive. */
3695 if (rsa
->actual_register_packet_size
== 0)
3696 rsa
->actual_register_packet_size
= buf_len
;
3698 /* If this is smaller than we guessed the 'g' packet would be,
3699 update our records. A 'g' reply that doesn't include a register's
3700 value implies either that the register is not available, or that
3701 the 'p' packet must be used. */
3702 if (buf_len
< 2 * rsa
->sizeof_g_packet
)
3704 rsa
->sizeof_g_packet
= buf_len
/ 2;
3706 for (i
= 0; i
< gdbarch_num_regs (gdbarch
); i
++)
3708 if (rsa
->regs
[i
].pnum
== -1)
3711 if (rsa
->regs
[i
].offset
>= rsa
->sizeof_g_packet
)
3712 rsa
->regs
[i
].in_g_packet
= 0;
3714 rsa
->regs
[i
].in_g_packet
= 1;
3718 regs
= alloca (rsa
->sizeof_g_packet
);
3720 /* Unimplemented registers read as all bits zero. */
3721 memset (regs
, 0, rsa
->sizeof_g_packet
);
3723 /* Reply describes registers byte by byte, each byte encoded as two
3724 hex characters. Suck them all up, then supply them to the
3725 register cacheing/storage mechanism. */
3728 for (i
= 0; i
< rsa
->sizeof_g_packet
; i
++)
3730 if (p
[0] == 0 || p
[1] == 0)
3731 /* This shouldn't happen - we adjusted sizeof_g_packet above. */
3732 internal_error (__FILE__
, __LINE__
,
3733 "unexpected end of 'g' packet reply");
3735 if (p
[0] == 'x' && p
[1] == 'x')
3736 regs
[i
] = 0; /* 'x' */
3738 regs
[i
] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
3744 for (i
= 0; i
< gdbarch_num_regs (gdbarch
); i
++)
3746 struct packet_reg
*r
= &rsa
->regs
[i
];
3749 if (r
->offset
* 2 >= strlen (rs
->buf
))
3750 /* This shouldn't happen - we adjusted in_g_packet above. */
3751 internal_error (__FILE__
, __LINE__
,
3752 "unexpected end of 'g' packet reply");
3753 else if (rs
->buf
[r
->offset
* 2] == 'x')
3755 gdb_assert (r
->offset
* 2 < strlen (rs
->buf
));
3756 /* The register isn't available, mark it as such (at
3757 the same time setting the value to zero). */
3758 regcache_raw_supply (regcache
, r
->regnum
, NULL
);
3761 regcache_raw_supply (regcache
, r
->regnum
,
3769 fetch_registers_using_g (struct regcache
*regcache
)
3772 process_g_packet (regcache
);
3776 remote_fetch_registers (struct regcache
*regcache
, int regnum
)
3778 struct remote_state
*rs
= get_remote_state ();
3779 struct remote_arch_state
*rsa
= get_remote_arch_state ();
3782 set_thread (PIDGET (inferior_ptid
), 1);
3786 struct packet_reg
*reg
= packet_reg_from_regnum (rsa
, regnum
);
3787 gdb_assert (reg
!= NULL
);
3789 /* If this register might be in the 'g' packet, try that first -
3790 we are likely to read more than one register. If this is the
3791 first 'g' packet, we might be overly optimistic about its
3792 contents, so fall back to 'p'. */
3793 if (reg
->in_g_packet
)
3795 fetch_registers_using_g (regcache
);
3796 if (reg
->in_g_packet
)
3800 if (fetch_register_using_p (regcache
, reg
))
3803 /* This register is not available. */
3804 regcache_raw_supply (regcache
, reg
->regnum
, NULL
);
3809 fetch_registers_using_g (regcache
);
3811 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
3812 if (!rsa
->regs
[i
].in_g_packet
)
3813 if (!fetch_register_using_p (regcache
, &rsa
->regs
[i
]))
3815 /* This register is not available. */
3816 regcache_raw_supply (regcache
, i
, NULL
);
3820 /* Prepare to store registers. Since we may send them all (using a
3821 'G' request), we have to read out the ones we don't want to change
3825 remote_prepare_to_store (struct regcache
*regcache
)
3827 struct remote_arch_state
*rsa
= get_remote_arch_state ();
3829 gdb_byte buf
[MAX_REGISTER_SIZE
];
3831 /* Make sure the entire registers array is valid. */
3832 switch (remote_protocol_packets
[PACKET_P
].support
)
3834 case PACKET_DISABLE
:
3835 case PACKET_SUPPORT_UNKNOWN
:
3836 /* Make sure all the necessary registers are cached. */
3837 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
3838 if (rsa
->regs
[i
].in_g_packet
)
3839 regcache_raw_read (regcache
, rsa
->regs
[i
].regnum
, buf
);
3846 /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF
3847 packet was not recognized. */
3850 store_register_using_P (const struct regcache
*regcache
, struct packet_reg
*reg
)
3852 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
3853 struct remote_state
*rs
= get_remote_state ();
3854 struct remote_arch_state
*rsa
= get_remote_arch_state ();
3855 /* Try storing a single register. */
3856 char *buf
= rs
->buf
;
3857 gdb_byte regp
[MAX_REGISTER_SIZE
];
3860 if (remote_protocol_packets
[PACKET_P
].support
== PACKET_DISABLE
)
3863 if (reg
->pnum
== -1)
3866 xsnprintf (buf
, get_remote_packet_size (), "P%s=", phex_nz (reg
->pnum
, 0));
3867 p
= buf
+ strlen (buf
);
3868 regcache_raw_collect (regcache
, reg
->regnum
, regp
);
3869 bin2hex (regp
, p
, register_size (gdbarch
, reg
->regnum
));
3870 remote_send (&rs
->buf
, &rs
->buf_size
);
3872 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_P
]))
3877 error (_("Could not write register \"%s\""),
3878 gdbarch_register_name (gdbarch
, reg
->regnum
));
3879 case PACKET_UNKNOWN
:
3882 internal_error (__FILE__
, __LINE__
, _("Bad result from packet_ok"));
3886 /* Store register REGNUM, or all registers if REGNUM == -1, from the
3887 contents of the register cache buffer. FIXME: ignores errors. */
3890 store_registers_using_G (const struct regcache
*regcache
)
3892 struct remote_state
*rs
= get_remote_state ();
3893 struct remote_arch_state
*rsa
= get_remote_arch_state ();
3897 /* Extract all the registers in the regcache copying them into a
3901 regs
= alloca (rsa
->sizeof_g_packet
);
3902 memset (regs
, 0, rsa
->sizeof_g_packet
);
3903 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
3905 struct packet_reg
*r
= &rsa
->regs
[i
];
3907 regcache_raw_collect (regcache
, r
->regnum
, regs
+ r
->offset
);
3911 /* Command describes registers byte by byte,
3912 each byte encoded as two hex characters. */
3915 /* remote_prepare_to_store insures that rsa->sizeof_g_packet gets
3917 bin2hex (regs
, p
, rsa
->sizeof_g_packet
);
3918 remote_send (&rs
->buf
, &rs
->buf_size
);
3921 /* Store register REGNUM, or all registers if REGNUM == -1, from the contents
3922 of the register cache buffer. FIXME: ignores errors. */
3925 remote_store_registers (struct regcache
*regcache
, int regnum
)
3927 struct remote_state
*rs
= get_remote_state ();
3928 struct remote_arch_state
*rsa
= get_remote_arch_state ();
3931 set_thread (PIDGET (inferior_ptid
), 1);
3935 struct packet_reg
*reg
= packet_reg_from_regnum (rsa
, regnum
);
3936 gdb_assert (reg
!= NULL
);
3938 /* Always prefer to store registers using the 'P' packet if
3939 possible; we often change only a small number of registers.
3940 Sometimes we change a larger number; we'd need help from a
3941 higher layer to know to use 'G'. */
3942 if (store_register_using_P (regcache
, reg
))
3945 /* For now, don't complain if we have no way to write the
3946 register. GDB loses track of unavailable registers too
3947 easily. Some day, this may be an error. We don't have
3948 any way to read the register, either... */
3949 if (!reg
->in_g_packet
)
3952 store_registers_using_G (regcache
);
3956 store_registers_using_G (regcache
);
3958 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
3959 if (!rsa
->regs
[i
].in_g_packet
)
3960 if (!store_register_using_P (regcache
, &rsa
->regs
[i
]))
3961 /* See above for why we do not issue an error here. */
3966 /* Return the number of hex digits in num. */
3969 hexnumlen (ULONGEST num
)
3973 for (i
= 0; num
!= 0; i
++)
3979 /* Set BUF to the minimum number of hex digits representing NUM. */
3982 hexnumstr (char *buf
, ULONGEST num
)
3984 int len
= hexnumlen (num
);
3985 return hexnumnstr (buf
, num
, len
);
3989 /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */
3992 hexnumnstr (char *buf
, ULONGEST num
, int width
)
3998 for (i
= width
- 1; i
>= 0; i
--)
4000 buf
[i
] = "0123456789abcdef"[(num
& 0xf)];
4007 /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */
4010 remote_address_masked (CORE_ADDR addr
)
4012 int address_size
= remote_address_size
;
4013 /* If "remoteaddresssize" was not set, default to target address size. */
4015 address_size
= gdbarch_addr_bit (current_gdbarch
);
4017 if (address_size
> 0
4018 && address_size
< (sizeof (ULONGEST
) * 8))
4020 /* Only create a mask when that mask can safely be constructed
4021 in a ULONGEST variable. */
4023 mask
= (mask
<< address_size
) - 1;
4029 /* Convert BUFFER, binary data at least LEN bytes long, into escaped
4030 binary data in OUT_BUF. Set *OUT_LEN to the length of the data
4031 encoded in OUT_BUF, and return the number of bytes in OUT_BUF
4032 (which may be more than *OUT_LEN due to escape characters). The
4033 total number of bytes in the output buffer will be at most
4037 remote_escape_output (const gdb_byte
*buffer
, int len
,
4038 gdb_byte
*out_buf
, int *out_len
,
4041 int input_index
, output_index
;
4044 for (input_index
= 0; input_index
< len
; input_index
++)
4046 gdb_byte b
= buffer
[input_index
];
4048 if (b
== '$' || b
== '#' || b
== '}')
4050 /* These must be escaped. */
4051 if (output_index
+ 2 > out_maxlen
)
4053 out_buf
[output_index
++] = '}';
4054 out_buf
[output_index
++] = b
^ 0x20;
4058 if (output_index
+ 1 > out_maxlen
)
4060 out_buf
[output_index
++] = b
;
4064 *out_len
= input_index
;
4065 return output_index
;
4068 /* Convert BUFFER, escaped data LEN bytes long, into binary data
4069 in OUT_BUF. Return the number of bytes written to OUT_BUF.
4070 Raise an error if the total number of bytes exceeds OUT_MAXLEN.
4072 This function reverses remote_escape_output. It allows more
4073 escaped characters than that function does, in particular because
4074 '*' must be escaped to avoid the run-length encoding processing
4075 in reading packets. */
4078 remote_unescape_input (const gdb_byte
*buffer
, int len
,
4079 gdb_byte
*out_buf
, int out_maxlen
)
4081 int input_index
, output_index
;
4086 for (input_index
= 0; input_index
< len
; input_index
++)
4088 gdb_byte b
= buffer
[input_index
];
4090 if (output_index
+ 1 > out_maxlen
)
4092 warning (_("Received too much data from remote target;"
4093 " ignoring overflow."));
4094 return output_index
;
4099 out_buf
[output_index
++] = b
^ 0x20;
4105 out_buf
[output_index
++] = b
;
4109 error (_("Unmatched escape character in target response."));
4111 return output_index
;
4114 /* Determine whether the remote target supports binary downloading.
4115 This is accomplished by sending a no-op memory write of zero length
4116 to the target at the specified address. It does not suffice to send
4117 the whole packet, since many stubs strip the eighth bit and
4118 subsequently compute a wrong checksum, which causes real havoc with
4121 NOTE: This can still lose if the serial line is not eight-bit
4122 clean. In cases like this, the user should clear "remote
4126 check_binary_download (CORE_ADDR addr
)
4128 struct remote_state
*rs
= get_remote_state ();
4130 switch (remote_protocol_packets
[PACKET_X
].support
)
4132 case PACKET_DISABLE
:
4136 case PACKET_SUPPORT_UNKNOWN
:
4142 p
+= hexnumstr (p
, (ULONGEST
) addr
);
4144 p
+= hexnumstr (p
, (ULONGEST
) 0);
4148 putpkt_binary (rs
->buf
, (int) (p
- rs
->buf
));
4149 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4151 if (rs
->buf
[0] == '\0')
4154 fprintf_unfiltered (gdb_stdlog
,
4155 "binary downloading NOT suppported by target\n");
4156 remote_protocol_packets
[PACKET_X
].support
= PACKET_DISABLE
;
4161 fprintf_unfiltered (gdb_stdlog
,
4162 "binary downloading suppported by target\n");
4163 remote_protocol_packets
[PACKET_X
].support
= PACKET_ENABLE
;
4170 /* Write memory data directly to the remote machine.
4171 This does not inform the data cache; the data cache uses this.
4172 HEADER is the starting part of the packet.
4173 MEMADDR is the address in the remote memory space.
4174 MYADDR is the address of the buffer in our space.
4175 LEN is the number of bytes.
4176 PACKET_FORMAT should be either 'X' or 'M', and indicates if we
4177 should send data as binary ('X'), or hex-encoded ('M').
4179 The function creates packet of the form
4180 <HEADER><ADDRESS>,<LENGTH>:<DATA>
4182 where encoding of <DATA> is termined by PACKET_FORMAT.
4184 If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma
4187 Returns the number of bytes transferred, or 0 (setting errno) for
4188 error. Only transfer a single packet. */
4191 remote_write_bytes_aux (const char *header
, CORE_ADDR memaddr
,
4192 const gdb_byte
*myaddr
, int len
,
4193 char packet_format
, int use_length
)
4195 struct remote_state
*rs
= get_remote_state ();
4205 if (packet_format
!= 'X' && packet_format
!= 'M')
4206 internal_error (__FILE__
, __LINE__
,
4207 "remote_write_bytes_aux: bad packet format");
4212 payload_size
= get_memory_write_packet_size ();
4214 /* The packet buffer will be large enough for the payload;
4215 get_memory_packet_size ensures this. */
4218 /* Compute the size of the actual payload by subtracting out the
4219 packet header and footer overhead: "$M<memaddr>,<len>:...#nn".
4221 payload_size
-= strlen ("$,:#NN");
4223 /* The comma won't be used. */
4225 header_length
= strlen (header
);
4226 payload_size
-= header_length
;
4227 payload_size
-= hexnumlen (memaddr
);
4229 /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */
4231 strcat (rs
->buf
, header
);
4232 p
= rs
->buf
+ strlen (header
);
4234 /* Compute a best guess of the number of bytes actually transfered. */
4235 if (packet_format
== 'X')
4237 /* Best guess at number of bytes that will fit. */
4238 todo
= min (len
, payload_size
);
4240 payload_size
-= hexnumlen (todo
);
4241 todo
= min (todo
, payload_size
);
4245 /* Num bytes that will fit. */
4246 todo
= min (len
, payload_size
/ 2);
4248 payload_size
-= hexnumlen (todo
);
4249 todo
= min (todo
, payload_size
/ 2);
4253 internal_error (__FILE__
, __LINE__
,
4254 _("minumum packet size too small to write data"));
4256 /* If we already need another packet, then try to align the end
4257 of this packet to a useful boundary. */
4258 if (todo
> 2 * REMOTE_ALIGN_WRITES
&& todo
< len
)
4259 todo
= ((memaddr
+ todo
) & ~(REMOTE_ALIGN_WRITES
- 1)) - memaddr
;
4261 /* Append "<memaddr>". */
4262 memaddr
= remote_address_masked (memaddr
);
4263 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
4270 /* Append <len>. Retain the location/size of <len>. It may need to
4271 be adjusted once the packet body has been created. */
4273 plenlen
= hexnumstr (p
, (ULONGEST
) todo
);
4281 /* Append the packet body. */
4282 if (packet_format
== 'X')
4284 /* Binary mode. Send target system values byte by byte, in
4285 increasing byte addresses. Only escape certain critical
4287 payload_length
= remote_escape_output (myaddr
, todo
, p
, &nr_bytes
,
4290 /* If not all TODO bytes fit, then we'll need another packet. Make
4291 a second try to keep the end of the packet aligned. Don't do
4292 this if the packet is tiny. */
4293 if (nr_bytes
< todo
&& nr_bytes
> 2 * REMOTE_ALIGN_WRITES
)
4297 new_nr_bytes
= (((memaddr
+ nr_bytes
) & ~(REMOTE_ALIGN_WRITES
- 1))
4299 if (new_nr_bytes
!= nr_bytes
)
4300 payload_length
= remote_escape_output (myaddr
, new_nr_bytes
,
4305 p
+= payload_length
;
4306 if (use_length
&& nr_bytes
< todo
)
4308 /* Escape chars have filled up the buffer prematurely,
4309 and we have actually sent fewer bytes than planned.
4310 Fix-up the length field of the packet. Use the same
4311 number of characters as before. */
4312 plen
+= hexnumnstr (plen
, (ULONGEST
) nr_bytes
, plenlen
);
4313 *plen
= ':'; /* overwrite \0 from hexnumnstr() */
4318 /* Normal mode: Send target system values byte by byte, in
4319 increasing byte addresses. Each byte is encoded as a two hex
4321 nr_bytes
= bin2hex (myaddr
, p
, todo
);
4325 putpkt_binary (rs
->buf
, (int) (p
- rs
->buf
));
4326 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4328 if (rs
->buf
[0] == 'E')
4330 /* There is no correspondance between what the remote protocol
4331 uses for errors and errno codes. We would like a cleaner way
4332 of representing errors (big enough to include errno codes,
4333 bfd_error codes, and others). But for now just return EIO. */
4338 /* Return NR_BYTES, not TODO, in case escape chars caused us to send
4339 fewer bytes than we'd planned. */
4343 /* Write memory data directly to the remote machine.
4344 This does not inform the data cache; the data cache uses this.
4345 MEMADDR is the address in the remote memory space.
4346 MYADDR is the address of the buffer in our space.
4347 LEN is the number of bytes.
4349 Returns number of bytes transferred, or 0 (setting errno) for
4350 error. Only transfer a single packet. */
4353 remote_write_bytes (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, int len
)
4355 char *packet_format
= 0;
4357 /* Check whether the target supports binary download. */
4358 check_binary_download (memaddr
);
4360 switch (remote_protocol_packets
[PACKET_X
].support
)
4363 packet_format
= "X";
4365 case PACKET_DISABLE
:
4366 packet_format
= "M";
4368 case PACKET_SUPPORT_UNKNOWN
:
4369 internal_error (__FILE__
, __LINE__
,
4370 _("remote_write_bytes: bad internal state"));
4372 internal_error (__FILE__
, __LINE__
, _("bad switch"));
4375 return remote_write_bytes_aux (packet_format
,
4376 memaddr
, myaddr
, len
, packet_format
[0], 1);
4379 /* Read memory data directly from the remote machine.
4380 This does not use the data cache; the data cache uses this.
4381 MEMADDR is the address in the remote memory space.
4382 MYADDR is the address of the buffer in our space.
4383 LEN is the number of bytes.
4385 Returns number of bytes transferred, or 0 for error. */
4387 /* NOTE: cagney/1999-10-18: This function (and its siblings in other
4388 remote targets) shouldn't attempt to read the entire buffer.
4389 Instead it should read a single packet worth of data and then
4390 return the byte size of that packet to the caller. The caller (its
4391 caller and its callers caller ;-) already contains code for
4392 handling partial reads. */
4395 remote_read_bytes (CORE_ADDR memaddr
, gdb_byte
*myaddr
, int len
)
4397 struct remote_state
*rs
= get_remote_state ();
4398 int max_buf_size
; /* Max size of packet output buffer. */
4404 max_buf_size
= get_memory_read_packet_size ();
4405 /* The packet buffer will be large enough for the payload;
4406 get_memory_packet_size ensures this. */
4415 todo
= min (len
, max_buf_size
/ 2); /* num bytes that will fit */
4417 /* construct "m"<memaddr>","<len>" */
4418 /* sprintf (rs->buf, "m%lx,%x", (unsigned long) memaddr, todo); */
4419 memaddr
= remote_address_masked (memaddr
);
4422 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
4424 p
+= hexnumstr (p
, (ULONGEST
) todo
);
4428 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4430 if (rs
->buf
[0] == 'E'
4431 && isxdigit (rs
->buf
[1]) && isxdigit (rs
->buf
[2])
4432 && rs
->buf
[3] == '\0')
4434 /* There is no correspondance between what the remote
4435 protocol uses for errors and errno codes. We would like
4436 a cleaner way of representing errors (big enough to
4437 include errno codes, bfd_error codes, and others). But
4438 for now just return EIO. */
4443 /* Reply describes memory byte by byte,
4444 each byte encoded as two hex characters. */
4447 if ((i
= hex2bin (p
, myaddr
, todo
)) < todo
)
4449 /* Reply is short. This means that we were able to read
4450 only part of what we wanted to. */
4451 return i
+ (origlen
- len
);
4460 /* Read or write LEN bytes from inferior memory at MEMADDR,
4461 transferring to or from debugger address BUFFER. Write to inferior
4462 if SHOULD_WRITE is nonzero. Returns length of data written or
4463 read; 0 for error. TARGET is unused. */
4466 remote_xfer_memory (CORE_ADDR mem_addr
, gdb_byte
*buffer
, int mem_len
,
4467 int should_write
, struct mem_attrib
*attrib
,
4468 struct target_ops
*target
)
4473 res
= remote_write_bytes (mem_addr
, buffer
, mem_len
);
4475 res
= remote_read_bytes (mem_addr
, buffer
, mem_len
);
4480 /* Sends a packet with content determined by the printf format string
4481 FORMAT and the remaining arguments, then gets the reply. Returns
4482 whether the packet was a success, a failure, or unknown. */
4485 remote_send_printf (const char *format
, ...)
4487 struct remote_state
*rs
= get_remote_state ();
4488 int max_size
= get_remote_packet_size ();
4491 va_start (ap
, format
);
4494 if (vsnprintf (rs
->buf
, max_size
, format
, ap
) >= max_size
)
4495 internal_error (__FILE__
, __LINE__
, "Too long remote packet.");
4497 if (putpkt (rs
->buf
) < 0)
4498 error (_("Communication problem with target."));
4501 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4503 return packet_check_result (rs
->buf
);
4507 restore_remote_timeout (void *p
)
4509 int value
= *(int *)p
;
4510 remote_timeout
= value
;
4513 /* Flash writing can take quite some time. We'll set
4514 effectively infinite timeout for flash operations.
4515 In future, we'll need to decide on a better approach. */
4516 static const int remote_flash_timeout
= 1000;
4519 remote_flash_erase (struct target_ops
*ops
,
4520 ULONGEST address
, LONGEST length
)
4522 int saved_remote_timeout
= remote_timeout
;
4523 enum packet_result ret
;
4525 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
4526 &saved_remote_timeout
);
4527 remote_timeout
= remote_flash_timeout
;
4529 ret
= remote_send_printf ("vFlashErase:%s,%s",
4534 case PACKET_UNKNOWN
:
4535 error (_("Remote target does not support flash erase"));
4537 error (_("Error erasing flash with vFlashErase packet"));
4542 do_cleanups (back_to
);
4546 remote_flash_write (struct target_ops
*ops
,
4547 ULONGEST address
, LONGEST length
,
4548 const gdb_byte
*data
)
4550 int saved_remote_timeout
= remote_timeout
;
4552 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
4553 &saved_remote_timeout
);
4555 remote_timeout
= remote_flash_timeout
;
4556 ret
= remote_write_bytes_aux ("vFlashWrite:", address
, data
, length
, 'X', 0);
4557 do_cleanups (back_to
);
4563 remote_flash_done (struct target_ops
*ops
)
4565 int saved_remote_timeout
= remote_timeout
;
4567 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
4568 &saved_remote_timeout
);
4570 remote_timeout
= remote_flash_timeout
;
4571 ret
= remote_send_printf ("vFlashDone");
4572 do_cleanups (back_to
);
4576 case PACKET_UNKNOWN
:
4577 error (_("Remote target does not support vFlashDone"));
4579 error (_("Error finishing flash operation"));
4586 remote_files_info (struct target_ops
*ignore
)
4588 puts_filtered ("Debugging a target over a serial line.\n");
4591 /* Stuff for dealing with the packets which are part of this protocol.
4592 See comment at top of file for details. */
4594 /* Read a single character from the remote end. */
4597 readchar (int timeout
)
4601 ch
= serial_readchar (remote_desc
, timeout
);
4606 switch ((enum serial_rc
) ch
)
4609 target_mourn_inferior ();
4610 error (_("Remote connection closed"));
4613 perror_with_name (_("Remote communication error"));
4615 case SERIAL_TIMEOUT
:
4621 /* Send the command in *BUF to the remote machine, and read the reply
4622 into *BUF. Report an error if we get an error reply. Resize
4623 *BUF using xrealloc if necessary to hold the result, and update
4627 remote_send (char **buf
,
4631 getpkt (buf
, sizeof_buf
, 0);
4633 if ((*buf
)[0] == 'E')
4634 error (_("Remote failure reply: %s"), *buf
);
4637 /* Display a null-terminated packet on stdout, for debugging, using C
4641 print_packet (char *buf
)
4643 puts_filtered ("\"");
4644 fputstr_filtered (buf
, '"', gdb_stdout
);
4645 puts_filtered ("\"");
4651 return putpkt_binary (buf
, strlen (buf
));
4654 /* Send a packet to the remote machine, with error checking. The data
4655 of the packet is in BUF. The string in BUF can be at most
4656 get_remote_packet_size () - 5 to account for the $, # and checksum,
4657 and for a possible /0 if we are debugging (remote_debug) and want
4658 to print the sent packet as a string. */
4661 putpkt_binary (char *buf
, int cnt
)
4663 struct remote_state
*rs
= get_remote_state ();
4665 unsigned char csum
= 0;
4666 char *buf2
= alloca (cnt
+ 6);
4672 /* We're sending out a new packet. Make sure we don't look at a
4673 stale cached response. */
4674 rs
->cached_wait_status
= 0;
4676 /* Copy the packet into buffer BUF2, encapsulating it
4677 and giving it a checksum. */
4682 for (i
= 0; i
< cnt
; i
++)
4688 *p
++ = tohex ((csum
>> 4) & 0xf);
4689 *p
++ = tohex (csum
& 0xf);
4691 /* Send it over and over until we get a positive ack. */
4695 int started_error_output
= 0;
4700 fprintf_unfiltered (gdb_stdlog
, "Sending packet: ");
4701 fputstrn_unfiltered (buf2
, p
- buf2
, 0, gdb_stdlog
);
4702 fprintf_unfiltered (gdb_stdlog
, "...");
4703 gdb_flush (gdb_stdlog
);
4705 if (serial_write (remote_desc
, buf2
, p
- buf2
))
4706 perror_with_name (_("putpkt: write failed"));
4708 /* Read until either a timeout occurs (-2) or '+' is read. */
4711 ch
= readchar (remote_timeout
);
4719 case SERIAL_TIMEOUT
:
4721 if (started_error_output
)
4723 putchar_unfiltered ('\n');
4724 started_error_output
= 0;
4733 fprintf_unfiltered (gdb_stdlog
, "Ack\n");
4737 fprintf_unfiltered (gdb_stdlog
, "Nak\n");
4738 case SERIAL_TIMEOUT
:
4742 break; /* Retransmit buffer. */
4746 fprintf_unfiltered (gdb_stdlog
,
4747 "Packet instead of Ack, ignoring it\n");
4748 /* It's probably an old response sent because an ACK
4749 was lost. Gobble up the packet and ack it so it
4750 doesn't get retransmitted when we resend this
4753 serial_write (remote_desc
, "+", 1);
4754 continue; /* Now, go look for +. */
4759 if (!started_error_output
)
4761 started_error_output
= 1;
4762 fprintf_unfiltered (gdb_stdlog
, "putpkt: Junk: ");
4764 fputc_unfiltered (ch
& 0177, gdb_stdlog
);
4768 break; /* Here to retransmit. */
4772 /* This is wrong. If doing a long backtrace, the user should be
4773 able to get out next time we call QUIT, without anything as
4774 violent as interrupt_query. If we want to provide a way out of
4775 here without getting to the next QUIT, it should be based on
4776 hitting ^C twice as in remote_wait. */
4786 /* Come here after finding the start of a frame when we expected an
4787 ack. Do our best to discard the rest of this packet. */
4796 c
= readchar (remote_timeout
);
4799 case SERIAL_TIMEOUT
:
4800 /* Nothing we can do. */
4803 /* Discard the two bytes of checksum and stop. */
4804 c
= readchar (remote_timeout
);
4806 c
= readchar (remote_timeout
);
4809 case '*': /* Run length encoding. */
4810 /* Discard the repeat count. */
4811 c
= readchar (remote_timeout
);
4816 /* A regular character. */
4822 /* Come here after finding the start of the frame. Collect the rest
4823 into *BUF, verifying the checksum, length, and handling run-length
4824 compression. NUL terminate the buffer. If there is not enough room,
4825 expand *BUF using xrealloc.
4827 Returns -1 on error, number of characters in buffer (ignoring the
4828 trailing NULL) on success. (could be extended to return one of the
4829 SERIAL status indications). */
4832 read_frame (char **buf_p
,
4845 c
= readchar (remote_timeout
);
4848 case SERIAL_TIMEOUT
:
4850 fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog
);
4854 fputs_filtered ("Saw new packet start in middle of old one\n",
4856 return -1; /* Start a new packet, count retries. */
4859 unsigned char pktcsum
;
4865 check_0
= readchar (remote_timeout
);
4867 check_1
= readchar (remote_timeout
);
4869 if (check_0
== SERIAL_TIMEOUT
|| check_1
== SERIAL_TIMEOUT
)
4872 fputs_filtered ("Timeout in checksum, retrying\n",
4876 else if (check_0
< 0 || check_1
< 0)
4879 fputs_filtered ("Communication error in checksum\n",
4884 pktcsum
= (fromhex (check_0
) << 4) | fromhex (check_1
);
4885 if (csum
== pktcsum
)
4890 fprintf_filtered (gdb_stdlog
,
4891 "Bad checksum, sentsum=0x%x, csum=0x%x, buf=",
4893 fputstrn_filtered (buf
, bc
, 0, gdb_stdlog
);
4894 fputs_filtered ("\n", gdb_stdlog
);
4896 /* Number of characters in buffer ignoring trailing
4900 case '*': /* Run length encoding. */
4905 c
= readchar (remote_timeout
);
4907 repeat
= c
- ' ' + 3; /* Compute repeat count. */
4909 /* The character before ``*'' is repeated. */
4911 if (repeat
> 0 && repeat
<= 255 && bc
> 0)
4913 if (bc
+ repeat
- 1 >= *sizeof_buf
- 1)
4915 /* Make some more room in the buffer. */
4916 *sizeof_buf
+= repeat
;
4917 *buf_p
= xrealloc (*buf_p
, *sizeof_buf
);
4921 memset (&buf
[bc
], buf
[bc
- 1], repeat
);
4927 printf_filtered (_("Invalid run length encoding: %s\n"), buf
);
4931 if (bc
>= *sizeof_buf
- 1)
4933 /* Make some more room in the buffer. */
4935 *buf_p
= xrealloc (*buf_p
, *sizeof_buf
);
4946 /* Read a packet from the remote machine, with error checking, and
4947 store it in *BUF. Resize *BUF using xrealloc if necessary to hold
4948 the result, and update *SIZEOF_BUF. If FOREVER, wait forever
4949 rather than timing out; this is used (in synchronous mode) to wait
4950 for a target that is is executing user code to stop. */
4951 /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we
4952 don't have to change all the calls to getpkt to deal with the
4953 return value, because at the moment I don't know what the right
4954 thing to do it for those. */
4962 timed_out
= getpkt_sane (buf
, sizeof_buf
, forever
);
4966 /* Read a packet from the remote machine, with error checking, and
4967 store it in *BUF. Resize *BUF using xrealloc if necessary to hold
4968 the result, and update *SIZEOF_BUF. If FOREVER, wait forever
4969 rather than timing out; this is used (in synchronous mode) to wait
4970 for a target that is is executing user code to stop. If FOREVER ==
4971 0, this function is allowed to time out gracefully and return an
4972 indication of this to the caller. Otherwise return the number
4975 getpkt_sane (char **buf
, long *sizeof_buf
, int forever
)
4977 struct remote_state
*rs
= get_remote_state ();
4983 /* We're reading a new response. Make sure we don't look at a
4984 previously cached response. */
4985 rs
->cached_wait_status
= 0;
4987 strcpy (*buf
, "timeout");
4991 timeout
= watchdog
> 0 ? watchdog
: -1;
4995 timeout
= remote_timeout
;
4999 for (tries
= 1; tries
<= MAX_TRIES
; tries
++)
5001 /* This can loop forever if the remote side sends us characters
5002 continuously, but if it pauses, we'll get a zero from
5003 readchar because of timeout. Then we'll count that as a
5006 /* Note that we will only wait forever prior to the start of a
5007 packet. After that, we expect characters to arrive at a
5008 brisk pace. They should show up within remote_timeout
5013 c
= readchar (timeout
);
5015 if (c
== SERIAL_TIMEOUT
)
5017 if (forever
) /* Watchdog went off? Kill the target. */
5020 target_mourn_inferior ();
5021 error (_("Watchdog timeout has expired. Target detached."));
5024 fputs_filtered ("Timed out.\n", gdb_stdlog
);
5030 /* We've found the start of a packet, now collect the data. */
5032 val
= read_frame (buf
, sizeof_buf
);
5038 fprintf_unfiltered (gdb_stdlog
, "Packet received: ");
5039 fputstrn_unfiltered (*buf
, val
, 0, gdb_stdlog
);
5040 fprintf_unfiltered (gdb_stdlog
, "\n");
5042 serial_write (remote_desc
, "+", 1);
5046 /* Try the whole thing again. */
5048 serial_write (remote_desc
, "-", 1);
5051 /* We have tried hard enough, and just can't receive the packet.
5054 printf_unfiltered (_("Ignoring packet error, continuing...\n"));
5055 serial_write (remote_desc
, "+", 1);
5062 /* Unregister the file descriptor from the event loop. */
5063 if (target_is_async_p ())
5064 serial_async (remote_desc
, NULL
, 0);
5066 /* Use catch_errors so the user can quit from gdb even when we
5067 aren't on speaking terms with the remote system. */
5068 catch_errors ((catch_errors_ftype
*) putpkt
, "k", "", RETURN_MASK_ERROR
);
5070 /* Don't wait for it to die. I'm not really sure it matters whether
5071 we do or not. For the existing stubs, kill is a noop. */
5072 target_mourn_inferior ();
5078 remote_mourn_1 (&remote_ops
);
5081 /* Worker function for remote_mourn. */
5083 remote_mourn_1 (struct target_ops
*target
)
5085 unpush_target (target
);
5086 generic_mourn_inferior ();
5090 extended_remote_mourn_1 (struct target_ops
*target
)
5092 struct remote_state
*rs
= get_remote_state ();
5094 /* Unlike "target remote", we do not want to unpush the target; then
5095 the next time the user says "run", we won't be connected. */
5097 /* Call common code to mark the inferior as not running. */
5098 generic_mourn_inferior ();
5100 /* Check whether the target is running now - some remote stubs
5101 automatically restart after kill. */
5103 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5105 if (rs
->buf
[0] == 'S' || rs
->buf
[0] == 'T')
5107 /* Assume that the target has been restarted. Set inferior_ptid
5108 so that bits of core GDB realizes there's something here, e.g.,
5109 so that the user can say "kill" again. */
5110 inferior_ptid
= pid_to_ptid (MAGIC_NULL_PID
);
5114 /* Mark this (still pushed) target as not executable until we
5116 target_mark_exited (target
);
5121 extended_remote_mourn (void)
5123 extended_remote_mourn_1 (&extended_remote_ops
);
5127 extended_remote_run (char *args
)
5129 struct remote_state
*rs
= get_remote_state ();
5133 /* If the user has disabled vRun support, or we have detected that
5134 support is not available, do not try it. */
5135 if (remote_protocol_packets
[PACKET_vRun
].support
== PACKET_DISABLE
)
5138 strcpy (rs
->buf
, "vRun;");
5139 len
= strlen (rs
->buf
);
5141 if (strlen (remote_exec_file
) * 2 + len
>= get_remote_packet_size ())
5142 error (_("Remote file name too long for run packet"));
5143 len
+= 2 * bin2hex ((gdb_byte
*) remote_exec_file
, rs
->buf
+ len
, 0);
5147 struct cleanup
*back_to
;
5151 argv
= buildargv (args
);
5152 back_to
= make_cleanup ((void (*) (void *)) freeargv
, argv
);
5153 for (i
= 0; argv
[i
] != NULL
; i
++)
5155 if (strlen (argv
[i
]) * 2 + 1 + len
>= get_remote_packet_size ())
5156 error (_("Argument list too long for run packet"));
5157 rs
->buf
[len
++] = ';';
5158 len
+= 2 * bin2hex ((gdb_byte
*) argv
[i
], rs
->buf
+ len
, 0);
5160 do_cleanups (back_to
);
5163 rs
->buf
[len
++] = '\0';
5166 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5168 if (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_vRun
]) == PACKET_OK
)
5170 /* We have a wait response; we don't need it, though. All is well. */
5173 else if (remote_protocol_packets
[PACKET_vRun
].support
== PACKET_DISABLE
)
5174 /* It wasn't disabled before, but it is now. */
5178 if (remote_exec_file
[0] == '\0')
5179 error (_("Running the default executable on the remote target failed; "
5180 "try \"set remote exec-file\"?"));
5182 error (_("Running \"%s\" on the remote target failed"),
5187 /* In the extended protocol we want to be able to do things like
5188 "run" and have them basically work as expected. So we need
5189 a special create_inferior function. We support changing the
5190 executable file and the command line arguments, but not the
5194 extended_remote_create_inferior_1 (char *exec_file
, char *args
,
5195 char **env
, int from_tty
)
5197 /* If running asynchronously, register the target file descriptor
5198 with the event loop. */
5199 if (target_can_async_p ())
5200 target_async (inferior_event_handler
, 0);
5202 /* Now restart the remote server. */
5203 if (extended_remote_run (args
) == -1)
5205 /* vRun was not supported. Fail if we need it to do what the
5207 if (remote_exec_file
[0])
5208 error (_("Remote target does not support \"set remote exec-file\""));
5210 error (_("Remote target does not support \"set args\" or run <ARGS>"));
5212 /* Fall back to "R". */
5213 extended_remote_restart ();
5216 /* Clean up from the last time we ran, before we mark the target
5217 running again. This will mark breakpoints uninserted, and
5218 get_offsets may insert breakpoints. */
5219 init_thread_list ();
5220 init_wait_for_inferior ();
5222 /* Now mark the inferior as running before we do anything else. */
5224 inferior_ptid
= pid_to_ptid (MAGIC_NULL_PID
);
5225 target_mark_running (&extended_remote_ops
);
5227 /* Get updated offsets, if the stub uses qOffsets. */
5232 extended_remote_create_inferior (char *exec_file
, char *args
,
5233 char **env
, int from_tty
)
5235 extended_remote_create_inferior_1 (exec_file
, args
, env
, from_tty
);
5239 /* Insert a breakpoint. On targets that have software breakpoint
5240 support, we ask the remote target to do the work; on targets
5241 which don't, we insert a traditional memory breakpoint. */
5244 remote_insert_breakpoint (struct bp_target_info
*bp_tgt
)
5246 /* Try the "Z" s/w breakpoint packet if it is not already disabled.
5247 If it succeeds, then set the support to PACKET_ENABLE. If it
5248 fails, and the user has explicitly requested the Z support then
5249 report an error, otherwise, mark it disabled and go on. */
5251 if (remote_protocol_packets
[PACKET_Z0
].support
!= PACKET_DISABLE
)
5254 struct remote_state
*rs
;
5257 gdbarch_breakpoint_from_pc
5258 (current_gdbarch
, &bp_tgt
->placed_address
, &bp_tgt
->placed_size
);
5260 rs
= get_remote_state ();
5266 addr
= (ULONGEST
) remote_address_masked (bp_tgt
->placed_address
);
5267 p
+= hexnumstr (p
, addr
);
5268 sprintf (p
, ",%d", bp_tgt
->placed_size
);
5271 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5273 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
]))
5279 case PACKET_UNKNOWN
:
5284 return memory_insert_breakpoint (bp_tgt
);
5288 remote_remove_breakpoint (struct bp_target_info
*bp_tgt
)
5290 CORE_ADDR addr
= bp_tgt
->placed_address
;
5291 struct remote_state
*rs
= get_remote_state ();
5294 if (remote_protocol_packets
[PACKET_Z0
].support
!= PACKET_DISABLE
)
5302 addr
= (ULONGEST
) remote_address_masked (bp_tgt
->placed_address
);
5303 p
+= hexnumstr (p
, addr
);
5304 sprintf (p
, ",%d", bp_tgt
->placed_size
);
5307 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5309 return (rs
->buf
[0] == 'E');
5312 return memory_remove_breakpoint (bp_tgt
);
5316 watchpoint_to_Z_packet (int type
)
5321 return Z_PACKET_WRITE_WP
;
5324 return Z_PACKET_READ_WP
;
5327 return Z_PACKET_ACCESS_WP
;
5330 internal_error (__FILE__
, __LINE__
,
5331 _("hw_bp_to_z: bad watchpoint type %d"), type
);
5336 remote_insert_watchpoint (CORE_ADDR addr
, int len
, int type
)
5338 struct remote_state
*rs
= get_remote_state ();
5340 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
5342 if (remote_protocol_packets
[PACKET_Z0
+ packet
].support
== PACKET_DISABLE
)
5345 sprintf (rs
->buf
, "Z%x,", packet
);
5346 p
= strchr (rs
->buf
, '\0');
5347 addr
= remote_address_masked (addr
);
5348 p
+= hexnumstr (p
, (ULONGEST
) addr
);
5349 sprintf (p
, ",%x", len
);
5352 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5354 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
+ packet
]))
5357 case PACKET_UNKNOWN
:
5362 internal_error (__FILE__
, __LINE__
,
5363 _("remote_insert_watchpoint: reached end of function"));
5368 remote_remove_watchpoint (CORE_ADDR addr
, int len
, int type
)
5370 struct remote_state
*rs
= get_remote_state ();
5372 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
5374 if (remote_protocol_packets
[PACKET_Z0
+ packet
].support
== PACKET_DISABLE
)
5377 sprintf (rs
->buf
, "z%x,", packet
);
5378 p
= strchr (rs
->buf
, '\0');
5379 addr
= remote_address_masked (addr
);
5380 p
+= hexnumstr (p
, (ULONGEST
) addr
);
5381 sprintf (p
, ",%x", len
);
5383 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5385 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
+ packet
]))
5388 case PACKET_UNKNOWN
:
5393 internal_error (__FILE__
, __LINE__
,
5394 _("remote_remove_watchpoint: reached end of function"));
5398 int remote_hw_watchpoint_limit
= -1;
5399 int remote_hw_breakpoint_limit
= -1;
5402 remote_check_watch_resources (int type
, int cnt
, int ot
)
5404 if (type
== bp_hardware_breakpoint
)
5406 if (remote_hw_breakpoint_limit
== 0)
5408 else if (remote_hw_breakpoint_limit
< 0)
5410 else if (cnt
<= remote_hw_breakpoint_limit
)
5415 if (remote_hw_watchpoint_limit
== 0)
5417 else if (remote_hw_watchpoint_limit
< 0)
5421 else if (cnt
<= remote_hw_watchpoint_limit
)
5428 remote_stopped_by_watchpoint (void)
5430 return remote_stopped_by_watchpoint_p
;
5434 remote_stopped_data_address (struct target_ops
*target
, CORE_ADDR
*addr_p
)
5437 if (remote_stopped_by_watchpoint ())
5439 *addr_p
= remote_watch_data_address
;
5448 remote_insert_hw_breakpoint (struct bp_target_info
*bp_tgt
)
5451 struct remote_state
*rs
;
5454 /* The length field should be set to the size of a breakpoint
5455 instruction, even though we aren't inserting one ourselves. */
5457 gdbarch_breakpoint_from_pc
5458 (current_gdbarch
, &bp_tgt
->placed_address
, &bp_tgt
->placed_size
);
5460 if (remote_protocol_packets
[PACKET_Z1
].support
== PACKET_DISABLE
)
5463 rs
= get_remote_state ();
5470 addr
= remote_address_masked (bp_tgt
->placed_address
);
5471 p
+= hexnumstr (p
, (ULONGEST
) addr
);
5472 sprintf (p
, ",%x", bp_tgt
->placed_size
);
5475 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5477 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z1
]))
5480 case PACKET_UNKNOWN
:
5485 internal_error (__FILE__
, __LINE__
,
5486 _("remote_insert_hw_breakpoint: reached end of function"));
5491 remote_remove_hw_breakpoint (struct bp_target_info
*bp_tgt
)
5494 struct remote_state
*rs
= get_remote_state ();
5497 if (remote_protocol_packets
[PACKET_Z1
].support
== PACKET_DISABLE
)
5504 addr
= remote_address_masked (bp_tgt
->placed_address
);
5505 p
+= hexnumstr (p
, (ULONGEST
) addr
);
5506 sprintf (p
, ",%x", bp_tgt
->placed_size
);
5509 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5511 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z1
]))
5514 case PACKET_UNKNOWN
:
5519 internal_error (__FILE__
, __LINE__
,
5520 _("remote_remove_hw_breakpoint: reached end of function"));
5523 /* Some targets are only capable of doing downloads, and afterwards
5524 they switch to the remote serial protocol. This function provides
5525 a clean way to get from the download target to the remote target.
5526 It's basically just a wrapper so that we don't have to expose any
5527 of the internal workings of remote.c.
5529 Prior to calling this routine, you should shutdown the current
5530 target code, else you will get the "A program is being debugged
5531 already..." message. Usually a call to pop_target() suffices. */
5534 push_remote_target (char *name
, int from_tty
)
5536 printf_filtered (_("Switching to remote protocol\n"));
5537 remote_open (name
, from_tty
);
5540 /* Table used by the crc32 function to calcuate the checksum. */
5542 static unsigned long crc32_table
[256] =
5545 static unsigned long
5546 crc32 (unsigned char *buf
, int len
, unsigned int crc
)
5548 if (!crc32_table
[1])
5550 /* Initialize the CRC table and the decoding table. */
5554 for (i
= 0; i
< 256; i
++)
5556 for (c
= i
<< 24, j
= 8; j
> 0; --j
)
5557 c
= c
& 0x80000000 ? (c
<< 1) ^ 0x04c11db7 : (c
<< 1);
5564 crc
= (crc
<< 8) ^ crc32_table
[((crc
>> 24) ^ *buf
) & 255];
5570 /* compare-sections command
5572 With no arguments, compares each loadable section in the exec bfd
5573 with the same memory range on the target, and reports mismatches.
5574 Useful for verifying the image on the target against the exec file.
5575 Depends on the target understanding the new "qCRC:" request. */
5577 /* FIXME: cagney/1999-10-26: This command should be broken down into a
5578 target method (target verify memory) and generic version of the
5579 actual command. This will allow other high-level code (especially
5580 generic_load()) to make use of this target functionality. */
5583 compare_sections_command (char *args
, int from_tty
)
5585 struct remote_state
*rs
= get_remote_state ();
5587 unsigned long host_crc
, target_crc
;
5588 extern bfd
*exec_bfd
;
5589 struct cleanup
*old_chain
;
5592 const char *sectname
;
5599 error (_("command cannot be used without an exec file"));
5600 if (!current_target
.to_shortname
||
5601 strcmp (current_target
.to_shortname
, "remote") != 0)
5602 error (_("command can only be used with remote target"));
5604 for (s
= exec_bfd
->sections
; s
; s
= s
->next
)
5606 if (!(s
->flags
& SEC_LOAD
))
5607 continue; /* skip non-loadable section */
5609 size
= bfd_get_section_size (s
);
5611 continue; /* skip zero-length section */
5613 sectname
= bfd_get_section_name (exec_bfd
, s
);
5614 if (args
&& strcmp (args
, sectname
) != 0)
5615 continue; /* not the section selected by user */
5617 matched
= 1; /* do this section */
5619 /* FIXME: assumes lma can fit into long. */
5620 xsnprintf (rs
->buf
, get_remote_packet_size (), "qCRC:%lx,%lx",
5621 (long) lma
, (long) size
);
5624 /* Be clever; compute the host_crc before waiting for target
5626 sectdata
= xmalloc (size
);
5627 old_chain
= make_cleanup (xfree
, sectdata
);
5628 bfd_get_section_contents (exec_bfd
, s
, sectdata
, 0, size
);
5629 host_crc
= crc32 ((unsigned char *) sectdata
, size
, 0xffffffff);
5631 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5632 if (rs
->buf
[0] == 'E')
5633 error (_("target memory fault, section %s, range 0x%s -- 0x%s"),
5634 sectname
, paddr (lma
), paddr (lma
+ size
));
5635 if (rs
->buf
[0] != 'C')
5636 error (_("remote target does not support this operation"));
5638 for (target_crc
= 0, tmp
= &rs
->buf
[1]; *tmp
; tmp
++)
5639 target_crc
= target_crc
* 16 + fromhex (*tmp
);
5641 printf_filtered ("Section %s, range 0x%s -- 0x%s: ",
5642 sectname
, paddr (lma
), paddr (lma
+ size
));
5643 if (host_crc
== target_crc
)
5644 printf_filtered ("matched.\n");
5647 printf_filtered ("MIS-MATCHED!\n");
5651 do_cleanups (old_chain
);
5654 warning (_("One or more sections of the remote executable does not match\n\
5655 the loaded file\n"));
5656 if (args
&& !matched
)
5657 printf_filtered (_("No loaded section named '%s'.\n"), args
);
5660 /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET
5661 into remote target. The number of bytes written to the remote
5662 target is returned, or -1 for error. */
5665 remote_write_qxfer (struct target_ops
*ops
, const char *object_name
,
5666 const char *annex
, const gdb_byte
*writebuf
,
5667 ULONGEST offset
, LONGEST len
,
5668 struct packet_config
*packet
)
5673 struct remote_state
*rs
= get_remote_state ();
5674 int max_size
= get_memory_write_packet_size ();
5676 if (packet
->support
== PACKET_DISABLE
)
5679 /* Insert header. */
5680 i
= snprintf (rs
->buf
, max_size
,
5681 "qXfer:%s:write:%s:%s:",
5682 object_name
, annex
? annex
: "",
5683 phex_nz (offset
, sizeof offset
));
5684 max_size
-= (i
+ 1);
5686 /* Escape as much data as fits into rs->buf. */
5687 buf_len
= remote_escape_output
5688 (writebuf
, len
, (rs
->buf
+ i
), &max_size
, max_size
);
5690 if (putpkt_binary (rs
->buf
, i
+ buf_len
) < 0
5691 || getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) < 0
5692 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
5695 unpack_varlen_hex (rs
->buf
, &n
);
5699 /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet.
5700 Data at OFFSET, of up to LEN bytes, is read into READBUF; the
5701 number of bytes read is returned, or 0 for EOF, or -1 for error.
5702 The number of bytes read may be less than LEN without indicating an
5703 EOF. PACKET is checked and updated to indicate whether the remote
5704 target supports this object. */
5707 remote_read_qxfer (struct target_ops
*ops
, const char *object_name
,
5709 gdb_byte
*readbuf
, ULONGEST offset
, LONGEST len
,
5710 struct packet_config
*packet
)
5712 static char *finished_object
;
5713 static char *finished_annex
;
5714 static ULONGEST finished_offset
;
5716 struct remote_state
*rs
= get_remote_state ();
5717 unsigned int total
= 0;
5718 LONGEST i
, n
, packet_len
;
5720 if (packet
->support
== PACKET_DISABLE
)
5723 /* Check whether we've cached an end-of-object packet that matches
5725 if (finished_object
)
5727 if (strcmp (object_name
, finished_object
) == 0
5728 && strcmp (annex
? annex
: "", finished_annex
) == 0
5729 && offset
== finished_offset
)
5732 /* Otherwise, we're now reading something different. Discard
5734 xfree (finished_object
);
5735 xfree (finished_annex
);
5736 finished_object
= NULL
;
5737 finished_annex
= NULL
;
5740 /* Request only enough to fit in a single packet. The actual data
5741 may not, since we don't know how much of it will need to be escaped;
5742 the target is free to respond with slightly less data. We subtract
5743 five to account for the response type and the protocol frame. */
5744 n
= min (get_remote_packet_size () - 5, len
);
5745 snprintf (rs
->buf
, get_remote_packet_size () - 4, "qXfer:%s:read:%s:%s,%s",
5746 object_name
, annex
? annex
: "",
5747 phex_nz (offset
, sizeof offset
),
5748 phex_nz (n
, sizeof n
));
5749 i
= putpkt (rs
->buf
);
5754 packet_len
= getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0);
5755 if (packet_len
< 0 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
5758 if (rs
->buf
[0] != 'l' && rs
->buf
[0] != 'm')
5759 error (_("Unknown remote qXfer reply: %s"), rs
->buf
);
5761 /* 'm' means there is (or at least might be) more data after this
5762 batch. That does not make sense unless there's at least one byte
5763 of data in this reply. */
5764 if (rs
->buf
[0] == 'm' && packet_len
== 1)
5765 error (_("Remote qXfer reply contained no data."));
5767 /* Got some data. */
5768 i
= remote_unescape_input (rs
->buf
+ 1, packet_len
- 1, readbuf
, n
);
5770 /* 'l' is an EOF marker, possibly including a final block of data,
5771 or possibly empty. If we have the final block of a non-empty
5772 object, record this fact to bypass a subsequent partial read. */
5773 if (rs
->buf
[0] == 'l' && offset
+ i
> 0)
5775 finished_object
= xstrdup (object_name
);
5776 finished_annex
= xstrdup (annex
? annex
: "");
5777 finished_offset
= offset
+ i
;
5784 remote_xfer_partial (struct target_ops
*ops
, enum target_object object
,
5785 const char *annex
, gdb_byte
*readbuf
,
5786 const gdb_byte
*writebuf
, ULONGEST offset
, LONGEST len
)
5788 struct remote_state
*rs
= get_remote_state ();
5793 /* Handle memory using the standard memory routines. */
5794 if (object
== TARGET_OBJECT_MEMORY
)
5799 /* If the remote target is connected but not running, we should
5800 pass this request down to a lower stratum (e.g. the executable
5802 if (!target_has_execution
)
5805 if (writebuf
!= NULL
)
5806 xfered
= remote_write_bytes (offset
, writebuf
, len
);
5808 xfered
= remote_read_bytes (offset
, readbuf
, len
);
5812 else if (xfered
== 0 && errno
== 0)
5818 /* Handle SPU memory using qxfer packets. */
5819 if (object
== TARGET_OBJECT_SPU
)
5822 return remote_read_qxfer (ops
, "spu", annex
, readbuf
, offset
, len
,
5823 &remote_protocol_packets
5824 [PACKET_qXfer_spu_read
]);
5826 return remote_write_qxfer (ops
, "spu", annex
, writebuf
, offset
, len
,
5827 &remote_protocol_packets
5828 [PACKET_qXfer_spu_write
]);
5831 /* Only handle flash writes. */
5832 if (writebuf
!= NULL
)
5838 case TARGET_OBJECT_FLASH
:
5839 xfered
= remote_flash_write (ops
, offset
, len
, writebuf
);
5843 else if (xfered
== 0 && errno
== 0)
5853 /* Map pre-existing objects onto letters. DO NOT do this for new
5854 objects!!! Instead specify new query packets. */
5857 case TARGET_OBJECT_AVR
:
5861 case TARGET_OBJECT_AUXV
:
5862 gdb_assert (annex
== NULL
);
5863 return remote_read_qxfer (ops
, "auxv", annex
, readbuf
, offset
, len
,
5864 &remote_protocol_packets
[PACKET_qXfer_auxv
]);
5866 case TARGET_OBJECT_AVAILABLE_FEATURES
:
5867 return remote_read_qxfer
5868 (ops
, "features", annex
, readbuf
, offset
, len
,
5869 &remote_protocol_packets
[PACKET_qXfer_features
]);
5871 case TARGET_OBJECT_LIBRARIES
:
5872 return remote_read_qxfer
5873 (ops
, "libraries", annex
, readbuf
, offset
, len
,
5874 &remote_protocol_packets
[PACKET_qXfer_libraries
]);
5876 case TARGET_OBJECT_MEMORY_MAP
:
5877 gdb_assert (annex
== NULL
);
5878 return remote_read_qxfer (ops
, "memory-map", annex
, readbuf
, offset
, len
,
5879 &remote_protocol_packets
[PACKET_qXfer_memory_map
]);
5885 /* Note: a zero OFFSET and LEN can be used to query the minimum
5887 if (offset
== 0 && len
== 0)
5888 return (get_remote_packet_size ());
5889 /* Minimum outbuf size is get_remote_packet_size (). If LEN is not
5890 large enough let the caller deal with it. */
5891 if (len
< get_remote_packet_size ())
5893 len
= get_remote_packet_size ();
5895 /* Except for querying the minimum buffer size, target must be open. */
5897 error (_("remote query is only available after target open"));
5899 gdb_assert (annex
!= NULL
);
5900 gdb_assert (readbuf
!= NULL
);
5906 /* We used one buffer char for the remote protocol q command and
5907 another for the query type. As the remote protocol encapsulation
5908 uses 4 chars plus one extra in case we are debugging
5909 (remote_debug), we have PBUFZIZ - 7 left to pack the query
5912 while (annex
[i
] && (i
< (get_remote_packet_size () - 8)))
5914 /* Bad caller may have sent forbidden characters. */
5915 gdb_assert (isprint (annex
[i
]) && annex
[i
] != '$' && annex
[i
] != '#');
5920 gdb_assert (annex
[i
] == '\0');
5922 i
= putpkt (rs
->buf
);
5926 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5927 strcpy ((char *) readbuf
, rs
->buf
);
5929 return strlen ((char *) readbuf
);
5933 remote_search_memory (struct target_ops
* ops
,
5934 CORE_ADDR start_addr
, ULONGEST search_space_len
,
5935 const gdb_byte
*pattern
, ULONGEST pattern_len
,
5936 CORE_ADDR
*found_addrp
)
5938 struct remote_state
*rs
= get_remote_state ();
5939 int max_size
= get_memory_write_packet_size ();
5940 struct packet_config
*packet
=
5941 &remote_protocol_packets
[PACKET_qSearch_memory
];
5942 /* number of packet bytes used to encode the pattern,
5943 this could be more than PATTERN_LEN due to escape characters */
5944 int escaped_pattern_len
;
5945 /* amount of pattern that was encodable in the packet */
5946 int used_pattern_len
;
5949 ULONGEST found_addr
;
5951 /* Don't go to the target if we don't have to.
5952 This is done before checking packet->support to avoid the possibility that
5953 a success for this edge case means the facility works in general. */
5954 if (pattern_len
> search_space_len
)
5956 if (pattern_len
== 0)
5958 *found_addrp
= start_addr
;
5962 /* If we already know the packet isn't supported, fall back to the simple
5963 way of searching memory. */
5965 if (packet
->support
== PACKET_DISABLE
)
5967 /* Target doesn't provided special support, fall back and use the
5968 standard support (copy memory and do the search here). */
5969 return simple_search_memory (ops
, start_addr
, search_space_len
,
5970 pattern
, pattern_len
, found_addrp
);
5973 /* Insert header. */
5974 i
= snprintf (rs
->buf
, max_size
,
5975 "qSearch:memory:%s;%s;",
5976 paddr_nz (start_addr
),
5977 phex_nz (search_space_len
, sizeof (search_space_len
)));
5978 max_size
-= (i
+ 1);
5980 /* Escape as much data as fits into rs->buf. */
5981 escaped_pattern_len
=
5982 remote_escape_output (pattern
, pattern_len
, (rs
->buf
+ i
),
5983 &used_pattern_len
, max_size
);
5985 /* Bail if the pattern is too large. */
5986 if (used_pattern_len
!= pattern_len
)
5987 error ("Pattern is too large to transmit to remote target.");
5989 if (putpkt_binary (rs
->buf
, i
+ escaped_pattern_len
) < 0
5990 || getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) < 0
5991 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
5993 /* The request may not have worked because the command is not
5994 supported. If so, fall back to the simple way. */
5995 if (packet
->support
== PACKET_DISABLE
)
5997 return simple_search_memory (ops
, start_addr
, search_space_len
,
5998 pattern
, pattern_len
, found_addrp
);
6003 if (rs
->buf
[0] == '0')
6005 else if (rs
->buf
[0] == '1')
6008 if (rs
->buf
[1] != ',')
6009 error (_("Unknown qSearch:memory reply: %s"), rs
->buf
);
6010 unpack_varlen_hex (rs
->buf
+ 2, &found_addr
);
6011 *found_addrp
= found_addr
;
6014 error (_("Unknown qSearch:memory reply: %s"), rs
->buf
);
6020 remote_rcmd (char *command
,
6021 struct ui_file
*outbuf
)
6023 struct remote_state
*rs
= get_remote_state ();
6027 error (_("remote rcmd is only available after target open"));
6029 /* Send a NULL command across as an empty command. */
6030 if (command
== NULL
)
6033 /* The query prefix. */
6034 strcpy (rs
->buf
, "qRcmd,");
6035 p
= strchr (rs
->buf
, '\0');
6037 if ((strlen (rs
->buf
) + strlen (command
) * 2 + 8/*misc*/) > get_remote_packet_size ())
6038 error (_("\"monitor\" command ``%s'' is too long."), command
);
6040 /* Encode the actual command. */
6041 bin2hex ((gdb_byte
*) command
, p
, 0);
6043 if (putpkt (rs
->buf
) < 0)
6044 error (_("Communication problem with target."));
6046 /* get/display the response */
6051 /* XXX - see also tracepoint.c:remote_get_noisy_reply(). */
6053 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6056 error (_("Target does not support this command."));
6057 if (buf
[0] == 'O' && buf
[1] != 'K')
6059 remote_console_output (buf
+ 1); /* 'O' message from stub. */
6062 if (strcmp (buf
, "OK") == 0)
6064 if (strlen (buf
) == 3 && buf
[0] == 'E'
6065 && isdigit (buf
[1]) && isdigit (buf
[2]))
6067 error (_("Protocol error with Rcmd"));
6069 for (p
= buf
; p
[0] != '\0' && p
[1] != '\0'; p
+= 2)
6071 char c
= (fromhex (p
[0]) << 4) + fromhex (p
[1]);
6072 fputc_unfiltered (c
, outbuf
);
6078 static VEC(mem_region_s
) *
6079 remote_memory_map (struct target_ops
*ops
)
6081 VEC(mem_region_s
) *result
= NULL
;
6082 char *text
= target_read_stralloc (¤t_target
,
6083 TARGET_OBJECT_MEMORY_MAP
, NULL
);
6087 struct cleanup
*back_to
= make_cleanup (xfree
, text
);
6088 result
= parse_memory_map (text
);
6089 do_cleanups (back_to
);
6096 packet_command (char *args
, int from_tty
)
6098 struct remote_state
*rs
= get_remote_state ();
6101 error (_("command can only be used with remote target"));
6104 error (_("remote-packet command requires packet text as argument"));
6106 puts_filtered ("sending: ");
6107 print_packet (args
);
6108 puts_filtered ("\n");
6111 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6112 puts_filtered ("received: ");
6113 print_packet (rs
->buf
);
6114 puts_filtered ("\n");
6118 /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */
6120 static void display_thread_info (struct gdb_ext_thread_info
*info
);
6122 static void threadset_test_cmd (char *cmd
, int tty
);
6124 static void threadalive_test (char *cmd
, int tty
);
6126 static void threadlist_test_cmd (char *cmd
, int tty
);
6128 int get_and_display_threadinfo (threadref
*ref
);
6130 static void threadinfo_test_cmd (char *cmd
, int tty
);
6132 static int thread_display_step (threadref
*ref
, void *context
);
6134 static void threadlist_update_test_cmd (char *cmd
, int tty
);
6136 static void init_remote_threadtests (void);
6138 #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */
6141 threadset_test_cmd (char *cmd
, int tty
)
6143 int sample_thread
= SAMPLE_THREAD
;
6145 printf_filtered (_("Remote threadset test\n"));
6146 set_thread (sample_thread
, 1);
6151 threadalive_test (char *cmd
, int tty
)
6153 int sample_thread
= SAMPLE_THREAD
;
6155 if (remote_thread_alive (pid_to_ptid (sample_thread
)))
6156 printf_filtered ("PASS: Thread alive test\n");
6158 printf_filtered ("FAIL: Thread alive test\n");
6161 void output_threadid (char *title
, threadref
*ref
);
6164 output_threadid (char *title
, threadref
*ref
)
6168 pack_threadid (&hexid
[0], ref
); /* Convert threead id into hex. */
6170 printf_filtered ("%s %s\n", title
, (&hexid
[0]));
6174 threadlist_test_cmd (char *cmd
, int tty
)
6177 threadref nextthread
;
6178 int done
, result_count
;
6179 threadref threadlist
[3];
6181 printf_filtered ("Remote Threadlist test\n");
6182 if (!remote_get_threadlist (startflag
, &nextthread
, 3, &done
,
6183 &result_count
, &threadlist
[0]))
6184 printf_filtered ("FAIL: threadlist test\n");
6187 threadref
*scan
= threadlist
;
6188 threadref
*limit
= scan
+ result_count
;
6190 while (scan
< limit
)
6191 output_threadid (" thread ", scan
++);
6196 display_thread_info (struct gdb_ext_thread_info
*info
)
6198 output_threadid ("Threadid: ", &info
->threadid
);
6199 printf_filtered ("Name: %s\n ", info
->shortname
);
6200 printf_filtered ("State: %s\n", info
->display
);
6201 printf_filtered ("other: %s\n\n", info
->more_display
);
6205 get_and_display_threadinfo (threadref
*ref
)
6209 struct gdb_ext_thread_info threadinfo
;
6211 set
= TAG_THREADID
| TAG_EXISTS
| TAG_THREADNAME
6212 | TAG_MOREDISPLAY
| TAG_DISPLAY
;
6213 if (0 != (result
= remote_get_threadinfo (ref
, set
, &threadinfo
)))
6214 display_thread_info (&threadinfo
);
6219 threadinfo_test_cmd (char *cmd
, int tty
)
6221 int athread
= SAMPLE_THREAD
;
6225 int_to_threadref (&thread
, athread
);
6226 printf_filtered ("Remote Threadinfo test\n");
6227 if (!get_and_display_threadinfo (&thread
))
6228 printf_filtered ("FAIL cannot get thread info\n");
6232 thread_display_step (threadref
*ref
, void *context
)
6234 /* output_threadid(" threadstep ",ref); *//* simple test */
6235 return get_and_display_threadinfo (ref
);
6239 threadlist_update_test_cmd (char *cmd
, int tty
)
6241 printf_filtered ("Remote Threadlist update test\n");
6242 remote_threadlist_iterator (thread_display_step
, 0, CRAZY_MAX_THREADS
);
6246 init_remote_threadtests (void)
6248 add_com ("tlist", class_obscure
, threadlist_test_cmd
, _("\
6249 Fetch and print the remote list of thread identifiers, one pkt only"));
6250 add_com ("tinfo", class_obscure
, threadinfo_test_cmd
,
6251 _("Fetch and display info about one thread"));
6252 add_com ("tset", class_obscure
, threadset_test_cmd
,
6253 _("Test setting to a different thread"));
6254 add_com ("tupd", class_obscure
, threadlist_update_test_cmd
,
6255 _("Iterate through updating all remote thread info"));
6256 add_com ("talive", class_obscure
, threadalive_test
,
6257 _(" Remote thread alive test "));
6262 /* Convert a thread ID to a string. Returns the string in a static
6266 remote_pid_to_str (ptid_t ptid
)
6268 static char buf
[32];
6270 xsnprintf (buf
, sizeof buf
, "Thread %d", ptid_get_pid (ptid
));
6274 /* Get the address of the thread local variable in OBJFILE which is
6275 stored at OFFSET within the thread local storage for thread PTID. */
6278 remote_get_thread_local_address (ptid_t ptid
, CORE_ADDR lm
, CORE_ADDR offset
)
6280 if (remote_protocol_packets
[PACKET_qGetTLSAddr
].support
!= PACKET_DISABLE
)
6282 struct remote_state
*rs
= get_remote_state ();
6284 enum packet_result result
;
6286 strcpy (p
, "qGetTLSAddr:");
6288 p
+= hexnumstr (p
, PIDGET (ptid
));
6290 p
+= hexnumstr (p
, offset
);
6292 p
+= hexnumstr (p
, lm
);
6296 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6297 result
= packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_qGetTLSAddr
]);
6298 if (result
== PACKET_OK
)
6302 unpack_varlen_hex (rs
->buf
, &result
);
6305 else if (result
== PACKET_UNKNOWN
)
6306 throw_error (TLS_GENERIC_ERROR
,
6307 _("Remote target doesn't support qGetTLSAddr packet"));
6309 throw_error (TLS_GENERIC_ERROR
,
6310 _("Remote target failed to process qGetTLSAddr request"));
6313 throw_error (TLS_GENERIC_ERROR
,
6314 _("TLS not supported or disabled on this target"));
6319 /* Support for inferring a target description based on the current
6320 architecture and the size of a 'g' packet. While the 'g' packet
6321 can have any size (since optional registers can be left off the
6322 end), some sizes are easily recognizable given knowledge of the
6323 approximate architecture. */
6325 struct remote_g_packet_guess
6328 const struct target_desc
*tdesc
;
6330 typedef struct remote_g_packet_guess remote_g_packet_guess_s
;
6331 DEF_VEC_O(remote_g_packet_guess_s
);
6333 struct remote_g_packet_data
6335 VEC(remote_g_packet_guess_s
) *guesses
;
6338 static struct gdbarch_data
*remote_g_packet_data_handle
;
6341 remote_g_packet_data_init (struct obstack
*obstack
)
6343 return OBSTACK_ZALLOC (obstack
, struct remote_g_packet_data
);
6347 register_remote_g_packet_guess (struct gdbarch
*gdbarch
, int bytes
,
6348 const struct target_desc
*tdesc
)
6350 struct remote_g_packet_data
*data
6351 = gdbarch_data (gdbarch
, remote_g_packet_data_handle
);
6352 struct remote_g_packet_guess new_guess
, *guess
;
6355 gdb_assert (tdesc
!= NULL
);
6358 VEC_iterate (remote_g_packet_guess_s
, data
->guesses
, ix
, guess
);
6360 if (guess
->bytes
== bytes
)
6361 internal_error (__FILE__
, __LINE__
,
6362 "Duplicate g packet description added for size %d",
6365 new_guess
.bytes
= bytes
;
6366 new_guess
.tdesc
= tdesc
;
6367 VEC_safe_push (remote_g_packet_guess_s
, data
->guesses
, &new_guess
);
6370 static const struct target_desc
*
6371 remote_read_description (struct target_ops
*target
)
6373 struct remote_g_packet_data
*data
6374 = gdbarch_data (current_gdbarch
, remote_g_packet_data_handle
);
6376 if (!VEC_empty (remote_g_packet_guess_s
, data
->guesses
))
6378 struct remote_g_packet_guess
*guess
;
6380 int bytes
= send_g_packet ();
6383 VEC_iterate (remote_g_packet_guess_s
, data
->guesses
, ix
, guess
);
6385 if (guess
->bytes
== bytes
)
6386 return guess
->tdesc
;
6388 /* We discard the g packet. A minor optimization would be to
6389 hold on to it, and fill the register cache once we have selected
6390 an architecture, but it's too tricky to do safely. */
6396 /* Remote file transfer support. This is host-initiated I/O, not
6397 target-initiated; for target-initiated, see remote-fileio.c. */
6399 /* If *LEFT is at least the length of STRING, copy STRING to
6400 *BUFFER, update *BUFFER to point to the new end of the buffer, and
6401 decrease *LEFT. Otherwise raise an error. */
6404 remote_buffer_add_string (char **buffer
, int *left
, char *string
)
6406 int len
= strlen (string
);
6409 error (_("Packet too long for target."));
6411 memcpy (*buffer
, string
, len
);
6415 /* NUL-terminate the buffer as a convenience, if there is
6421 /* If *LEFT is large enough, hex encode LEN bytes from BYTES into
6422 *BUFFER, update *BUFFER to point to the new end of the buffer, and
6423 decrease *LEFT. Otherwise raise an error. */
6426 remote_buffer_add_bytes (char **buffer
, int *left
, const gdb_byte
*bytes
,
6429 if (2 * len
> *left
)
6430 error (_("Packet too long for target."));
6432 bin2hex (bytes
, *buffer
, len
);
6436 /* NUL-terminate the buffer as a convenience, if there is
6442 /* If *LEFT is large enough, convert VALUE to hex and add it to
6443 *BUFFER, update *BUFFER to point to the new end of the buffer, and
6444 decrease *LEFT. Otherwise raise an error. */
6447 remote_buffer_add_int (char **buffer
, int *left
, ULONGEST value
)
6449 int len
= hexnumlen (value
);
6452 error (_("Packet too long for target."));
6454 hexnumstr (*buffer
, value
);
6458 /* NUL-terminate the buffer as a convenience, if there is
6464 /* Parse an I/O result packet from BUFFER. Set RETCODE to the return
6465 value, *REMOTE_ERRNO to the remote error number or zero if none
6466 was included, and *ATTACHMENT to point to the start of the annex
6467 if any. The length of the packet isn't needed here; there may
6468 be NUL bytes in BUFFER, but they will be after *ATTACHMENT.
6470 Return 0 if the packet could be parsed, -1 if it could not. If
6471 -1 is returned, the other variables may not be initialized. */
6474 remote_hostio_parse_result (char *buffer
, int *retcode
,
6475 int *remote_errno
, char **attachment
)
6482 if (buffer
[0] != 'F')
6486 *retcode
= strtol (&buffer
[1], &p
, 16);
6487 if (errno
!= 0 || p
== &buffer
[1])
6490 /* Check for ",errno". */
6494 *remote_errno
= strtol (p
+ 1, &p2
, 16);
6495 if (errno
!= 0 || p
+ 1 == p2
)
6500 /* Check for ";attachment". If there is no attachment, the
6501 packet should end here. */
6504 *attachment
= p
+ 1;
6507 else if (*p
== '\0')
6513 /* Send a prepared I/O packet to the target and read its response.
6514 The prepared packet is in the global RS->BUF before this function
6515 is called, and the answer is there when we return.
6517 COMMAND_BYTES is the length of the request to send, which may include
6518 binary data. WHICH_PACKET is the packet configuration to check
6519 before attempting a packet. If an error occurs, *REMOTE_ERRNO
6520 is set to the error number and -1 is returned. Otherwise the value
6521 returned by the function is returned.
6523 ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an
6524 attachment is expected; an error will be reported if there's a
6525 mismatch. If one is found, *ATTACHMENT will be set to point into
6526 the packet buffer and *ATTACHMENT_LEN will be set to the
6527 attachment's length. */
6530 remote_hostio_send_command (int command_bytes
, int which_packet
,
6531 int *remote_errno
, char **attachment
,
6532 int *attachment_len
)
6534 struct remote_state
*rs
= get_remote_state ();
6535 int ret
, bytes_read
;
6536 char *attachment_tmp
;
6538 if (remote_protocol_packets
[which_packet
].support
== PACKET_DISABLE
)
6540 *remote_errno
= FILEIO_ENOSYS
;
6544 putpkt_binary (rs
->buf
, command_bytes
);
6545 bytes_read
= getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0);
6547 /* If it timed out, something is wrong. Don't try to parse the
6551 *remote_errno
= FILEIO_EINVAL
;
6555 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[which_packet
]))
6558 *remote_errno
= FILEIO_EINVAL
;
6560 case PACKET_UNKNOWN
:
6561 *remote_errno
= FILEIO_ENOSYS
;
6567 if (remote_hostio_parse_result (rs
->buf
, &ret
, remote_errno
,
6570 *remote_errno
= FILEIO_EINVAL
;
6574 /* Make sure we saw an attachment if and only if we expected one. */
6575 if ((attachment_tmp
== NULL
&& attachment
!= NULL
)
6576 || (attachment_tmp
!= NULL
&& attachment
== NULL
))
6578 *remote_errno
= FILEIO_EINVAL
;
6582 /* If an attachment was found, it must point into the packet buffer;
6583 work out how many bytes there were. */
6584 if (attachment_tmp
!= NULL
)
6586 *attachment
= attachment_tmp
;
6587 *attachment_len
= bytes_read
- (*attachment
- rs
->buf
);
6593 /* Open FILENAME on the remote target, using FLAGS and MODE. Return a
6594 remote file descriptor, or -1 if an error occurs (and set
6598 remote_hostio_open (const char *filename
, int flags
, int mode
,
6601 struct remote_state
*rs
= get_remote_state ();
6603 int left
= get_remote_packet_size () - 1;
6605 remote_buffer_add_string (&p
, &left
, "vFile:open:");
6607 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
6609 remote_buffer_add_string (&p
, &left
, ",");
6611 remote_buffer_add_int (&p
, &left
, flags
);
6612 remote_buffer_add_string (&p
, &left
, ",");
6614 remote_buffer_add_int (&p
, &left
, mode
);
6616 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_open
,
6617 remote_errno
, NULL
, NULL
);
6620 /* Write up to LEN bytes from WRITE_BUF to FD on the remote target.
6621 Return the number of bytes written, or -1 if an error occurs (and
6622 set *REMOTE_ERRNO). */
6625 remote_hostio_pwrite (int fd
, const gdb_byte
*write_buf
, int len
,
6626 ULONGEST offset
, int *remote_errno
)
6628 struct remote_state
*rs
= get_remote_state ();
6630 int left
= get_remote_packet_size ();
6633 remote_buffer_add_string (&p
, &left
, "vFile:pwrite:");
6635 remote_buffer_add_int (&p
, &left
, fd
);
6636 remote_buffer_add_string (&p
, &left
, ",");
6638 remote_buffer_add_int (&p
, &left
, offset
);
6639 remote_buffer_add_string (&p
, &left
, ",");
6641 p
+= remote_escape_output (write_buf
, len
, p
, &out_len
,
6642 get_remote_packet_size () - (p
- rs
->buf
));
6644 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_pwrite
,
6645 remote_errno
, NULL
, NULL
);
6648 /* Read up to LEN bytes FD on the remote target into READ_BUF
6649 Return the number of bytes read, or -1 if an error occurs (and
6650 set *REMOTE_ERRNO). */
6653 remote_hostio_pread (int fd
, gdb_byte
*read_buf
, int len
,
6654 ULONGEST offset
, int *remote_errno
)
6656 struct remote_state
*rs
= get_remote_state ();
6659 int left
= get_remote_packet_size ();
6660 int ret
, attachment_len
;
6663 remote_buffer_add_string (&p
, &left
, "vFile:pread:");
6665 remote_buffer_add_int (&p
, &left
, fd
);
6666 remote_buffer_add_string (&p
, &left
, ",");
6668 remote_buffer_add_int (&p
, &left
, len
);
6669 remote_buffer_add_string (&p
, &left
, ",");
6671 remote_buffer_add_int (&p
, &left
, offset
);
6673 ret
= remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_pread
,
6674 remote_errno
, &attachment
,
6680 read_len
= remote_unescape_input (attachment
, attachment_len
,
6682 if (read_len
!= ret
)
6683 error (_("Read returned %d, but %d bytes."), ret
, (int) read_len
);
6688 /* Close FD on the remote target. Return 0, or -1 if an error occurs
6689 (and set *REMOTE_ERRNO). */
6692 remote_hostio_close (int fd
, int *remote_errno
)
6694 struct remote_state
*rs
= get_remote_state ();
6696 int left
= get_remote_packet_size () - 1;
6698 remote_buffer_add_string (&p
, &left
, "vFile:close:");
6700 remote_buffer_add_int (&p
, &left
, fd
);
6702 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_close
,
6703 remote_errno
, NULL
, NULL
);
6706 /* Unlink FILENAME on the remote target. Return 0, or -1 if an error
6707 occurs (and set *REMOTE_ERRNO). */
6710 remote_hostio_unlink (const char *filename
, int *remote_errno
)
6712 struct remote_state
*rs
= get_remote_state ();
6714 int left
= get_remote_packet_size () - 1;
6716 remote_buffer_add_string (&p
, &left
, "vFile:unlink:");
6718 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
6721 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_unlink
,
6722 remote_errno
, NULL
, NULL
);
6726 remote_fileio_errno_to_host (int errnum
)
6750 case FILEIO_ENOTDIR
:
6770 case FILEIO_ENAMETOOLONG
:
6771 return ENAMETOOLONG
;
6777 remote_hostio_error (int errnum
)
6779 int host_error
= remote_fileio_errno_to_host (errnum
);
6781 if (host_error
== -1)
6782 error (_("Unknown remote I/O error %d"), errnum
);
6784 error (_("Remote I/O error: %s"), safe_strerror (host_error
));
6788 fclose_cleanup (void *file
)
6794 remote_hostio_close_cleanup (void *opaque
)
6796 int fd
= *(int *) opaque
;
6799 remote_hostio_close (fd
, &remote_errno
);
6803 remote_file_put (const char *local_file
, const char *remote_file
, int from_tty
)
6805 struct cleanup
*back_to
, *close_cleanup
;
6806 int retcode
, fd
, remote_errno
, bytes
, io_size
;
6809 int bytes_in_buffer
;
6814 error (_("command can only be used with remote target"));
6816 file
= fopen (local_file
, "rb");
6818 perror_with_name (local_file
);
6819 back_to
= make_cleanup (fclose_cleanup
, file
);
6821 fd
= remote_hostio_open (remote_file
, (FILEIO_O_WRONLY
| FILEIO_O_CREAT
6823 0700, &remote_errno
);
6825 remote_hostio_error (remote_errno
);
6827 /* Send up to this many bytes at once. They won't all fit in the
6828 remote packet limit, so we'll transfer slightly fewer. */
6829 io_size
= get_remote_packet_size ();
6830 buffer
= xmalloc (io_size
);
6831 make_cleanup (xfree
, buffer
);
6833 close_cleanup
= make_cleanup (remote_hostio_close_cleanup
, &fd
);
6835 bytes_in_buffer
= 0;
6838 while (bytes_in_buffer
|| !saw_eof
)
6842 bytes
= fread (buffer
+ bytes_in_buffer
, 1, io_size
- bytes_in_buffer
,
6847 error (_("Error reading %s."), local_file
);
6850 /* EOF. Unless there is something still in the
6851 buffer from the last iteration, we are done. */
6853 if (bytes_in_buffer
== 0)
6861 bytes
+= bytes_in_buffer
;
6862 bytes_in_buffer
= 0;
6864 retcode
= remote_hostio_pwrite (fd
, buffer
, bytes
, offset
, &remote_errno
);
6867 remote_hostio_error (remote_errno
);
6868 else if (retcode
== 0)
6869 error (_("Remote write of %d bytes returned 0!"), bytes
);
6870 else if (retcode
< bytes
)
6872 /* Short write. Save the rest of the read data for the next
6874 bytes_in_buffer
= bytes
- retcode
;
6875 memmove (buffer
, buffer
+ retcode
, bytes_in_buffer
);
6881 discard_cleanups (close_cleanup
);
6882 if (remote_hostio_close (fd
, &remote_errno
))
6883 remote_hostio_error (remote_errno
);
6886 printf_filtered (_("Successfully sent file \"%s\".\n"), local_file
);
6887 do_cleanups (back_to
);
6891 remote_file_get (const char *remote_file
, const char *local_file
, int from_tty
)
6893 struct cleanup
*back_to
, *close_cleanup
;
6894 int retcode
, fd
, remote_errno
, bytes
, io_size
;
6900 error (_("command can only be used with remote target"));
6902 fd
= remote_hostio_open (remote_file
, FILEIO_O_RDONLY
, 0, &remote_errno
);
6904 remote_hostio_error (remote_errno
);
6906 file
= fopen (local_file
, "wb");
6908 perror_with_name (local_file
);
6909 back_to
= make_cleanup (fclose_cleanup
, file
);
6911 /* Send up to this many bytes at once. They won't all fit in the
6912 remote packet limit, so we'll transfer slightly fewer. */
6913 io_size
= get_remote_packet_size ();
6914 buffer
= xmalloc (io_size
);
6915 make_cleanup (xfree
, buffer
);
6917 close_cleanup
= make_cleanup (remote_hostio_close_cleanup
, &fd
);
6922 bytes
= remote_hostio_pread (fd
, buffer
, io_size
, offset
, &remote_errno
);
6924 /* Success, but no bytes, means end-of-file. */
6927 remote_hostio_error (remote_errno
);
6931 bytes
= fwrite (buffer
, 1, bytes
, file
);
6933 perror_with_name (local_file
);
6936 discard_cleanups (close_cleanup
);
6937 if (remote_hostio_close (fd
, &remote_errno
))
6938 remote_hostio_error (remote_errno
);
6941 printf_filtered (_("Successfully fetched file \"%s\".\n"), remote_file
);
6942 do_cleanups (back_to
);
6946 remote_file_delete (const char *remote_file
, int from_tty
)
6948 int retcode
, remote_errno
;
6951 error (_("command can only be used with remote target"));
6953 retcode
= remote_hostio_unlink (remote_file
, &remote_errno
);
6955 remote_hostio_error (remote_errno
);
6958 printf_filtered (_("Successfully deleted file \"%s\".\n"), remote_file
);
6962 remote_put_command (char *args
, int from_tty
)
6964 struct cleanup
*back_to
;
6967 argv
= buildargv (args
);
6970 back_to
= make_cleanup_freeargv (argv
);
6971 if (argv
[0] == NULL
|| argv
[1] == NULL
|| argv
[2] != NULL
)
6972 error (_("Invalid parameters to remote put"));
6974 remote_file_put (argv
[0], argv
[1], from_tty
);
6976 do_cleanups (back_to
);
6980 remote_get_command (char *args
, int from_tty
)
6982 struct cleanup
*back_to
;
6985 argv
= buildargv (args
);
6988 back_to
= make_cleanup_freeargv (argv
);
6989 if (argv
[0] == NULL
|| argv
[1] == NULL
|| argv
[2] != NULL
)
6990 error (_("Invalid parameters to remote get"));
6992 remote_file_get (argv
[0], argv
[1], from_tty
);
6994 do_cleanups (back_to
);
6998 remote_delete_command (char *args
, int from_tty
)
7000 struct cleanup
*back_to
;
7003 argv
= buildargv (args
);
7006 back_to
= make_cleanup_freeargv (argv
);
7007 if (argv
[0] == NULL
|| argv
[1] != NULL
)
7008 error (_("Invalid parameters to remote delete"));
7010 remote_file_delete (argv
[0], from_tty
);
7012 do_cleanups (back_to
);
7016 remote_command (char *args
, int from_tty
)
7018 help_list (remote_cmdlist
, "remote ", -1, gdb_stdout
);
7022 init_remote_ops (void)
7024 remote_ops
.to_shortname
= "remote";
7025 remote_ops
.to_longname
= "Remote serial target in gdb-specific protocol";
7027 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
7028 Specify the serial device it is connected to\n\
7029 (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).";
7030 remote_ops
.to_open
= remote_open
;
7031 remote_ops
.to_close
= remote_close
;
7032 remote_ops
.to_detach
= remote_detach
;
7033 remote_ops
.to_disconnect
= remote_disconnect
;
7034 remote_ops
.to_resume
= remote_resume
;
7035 remote_ops
.to_wait
= remote_wait
;
7036 remote_ops
.to_fetch_registers
= remote_fetch_registers
;
7037 remote_ops
.to_store_registers
= remote_store_registers
;
7038 remote_ops
.to_prepare_to_store
= remote_prepare_to_store
;
7039 remote_ops
.deprecated_xfer_memory
= remote_xfer_memory
;
7040 remote_ops
.to_files_info
= remote_files_info
;
7041 remote_ops
.to_insert_breakpoint
= remote_insert_breakpoint
;
7042 remote_ops
.to_remove_breakpoint
= remote_remove_breakpoint
;
7043 remote_ops
.to_stopped_by_watchpoint
= remote_stopped_by_watchpoint
;
7044 remote_ops
.to_stopped_data_address
= remote_stopped_data_address
;
7045 remote_ops
.to_can_use_hw_breakpoint
= remote_check_watch_resources
;
7046 remote_ops
.to_insert_hw_breakpoint
= remote_insert_hw_breakpoint
;
7047 remote_ops
.to_remove_hw_breakpoint
= remote_remove_hw_breakpoint
;
7048 remote_ops
.to_insert_watchpoint
= remote_insert_watchpoint
;
7049 remote_ops
.to_remove_watchpoint
= remote_remove_watchpoint
;
7050 remote_ops
.to_kill
= remote_kill
;
7051 remote_ops
.to_load
= generic_load
;
7052 remote_ops
.to_mourn_inferior
= remote_mourn
;
7053 remote_ops
.to_thread_alive
= remote_thread_alive
;
7054 remote_ops
.to_find_new_threads
= remote_threads_info
;
7055 remote_ops
.to_pid_to_str
= remote_pid_to_str
;
7056 remote_ops
.to_extra_thread_info
= remote_threads_extra_info
;
7057 remote_ops
.to_stop
= remote_stop
;
7058 remote_ops
.to_xfer_partial
= remote_xfer_partial
;
7059 remote_ops
.to_rcmd
= remote_rcmd
;
7060 remote_ops
.to_log_command
= serial_log_command
;
7061 remote_ops
.to_get_thread_local_address
= remote_get_thread_local_address
;
7062 remote_ops
.to_stratum
= process_stratum
;
7063 remote_ops
.to_has_all_memory
= 1;
7064 remote_ops
.to_has_memory
= 1;
7065 remote_ops
.to_has_stack
= 1;
7066 remote_ops
.to_has_registers
= 1;
7067 remote_ops
.to_has_execution
= 1;
7068 remote_ops
.to_has_thread_control
= tc_schedlock
; /* can lock scheduler */
7069 remote_ops
.to_magic
= OPS_MAGIC
;
7070 remote_ops
.to_memory_map
= remote_memory_map
;
7071 remote_ops
.to_flash_erase
= remote_flash_erase
;
7072 remote_ops
.to_flash_done
= remote_flash_done
;
7073 remote_ops
.to_read_description
= remote_read_description
;
7074 remote_ops
.to_search_memory
= remote_search_memory
;
7075 remote_ops
.to_can_async_p
= remote_can_async_p
;
7076 remote_ops
.to_is_async_p
= remote_is_async_p
;
7077 remote_ops
.to_async
= remote_async
;
7078 remote_ops
.to_async_mask
= remote_async_mask
;
7079 remote_ops
.to_terminal_inferior
= remote_terminal_inferior
;
7080 remote_ops
.to_terminal_ours
= remote_terminal_ours
;
7083 /* Set up the extended remote vector by making a copy of the standard
7084 remote vector and adding to it. */
7087 init_extended_remote_ops (void)
7089 extended_remote_ops
= remote_ops
;
7091 extended_remote_ops
.to_shortname
= "extended-remote";
7092 extended_remote_ops
.to_longname
=
7093 "Extended remote serial target in gdb-specific protocol";
7094 extended_remote_ops
.to_doc
=
7095 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
7096 Specify the serial device it is connected to (e.g. /dev/ttya).";
7097 extended_remote_ops
.to_open
= extended_remote_open
;
7098 extended_remote_ops
.to_create_inferior
= extended_remote_create_inferior
;
7099 extended_remote_ops
.to_mourn_inferior
= extended_remote_mourn
;
7100 extended_remote_ops
.to_detach
= extended_remote_detach
;
7101 extended_remote_ops
.to_attach
= extended_remote_attach
;
7105 remote_can_async_p (void)
7107 if (!remote_async_permitted
)
7108 /* We only enable async when the user specifically asks for it. */
7111 /* We're async whenever the serial device is. */
7112 return remote_async_mask_value
&& serial_can_async_p (remote_desc
);
7116 remote_is_async_p (void)
7118 if (!remote_async_permitted
)
7119 /* We only enable async when the user specifically asks for it. */
7122 /* We're async whenever the serial device is. */
7123 return remote_async_mask_value
&& serial_is_async_p (remote_desc
);
7126 /* Pass the SERIAL event on and up to the client. One day this code
7127 will be able to delay notifying the client of an event until the
7128 point where an entire packet has been received. */
7130 static void (*async_client_callback
) (enum inferior_event_type event_type
,
7132 static void *async_client_context
;
7133 static serial_event_ftype remote_async_serial_handler
;
7136 remote_async_serial_handler (struct serial
*scb
, void *context
)
7138 /* Don't propogate error information up to the client. Instead let
7139 the client find out about the error by querying the target. */
7140 async_client_callback (INF_REG_EVENT
, async_client_context
);
7144 remote_async (void (*callback
) (enum inferior_event_type event_type
,
7145 void *context
), void *context
)
7147 if (remote_async_mask_value
== 0)
7148 internal_error (__FILE__
, __LINE__
,
7149 _("Calling remote_async when async is masked"));
7151 if (callback
!= NULL
)
7153 serial_async (remote_desc
, remote_async_serial_handler
, NULL
);
7154 async_client_callback
= callback
;
7155 async_client_context
= context
;
7158 serial_async (remote_desc
, NULL
, NULL
);
7162 remote_async_mask (int new_mask
)
7164 int curr_mask
= remote_async_mask_value
;
7165 remote_async_mask_value
= new_mask
;
7170 set_remote_cmd (char *args
, int from_tty
)
7172 help_list (remote_set_cmdlist
, "set remote ", -1, gdb_stdout
);
7176 show_remote_cmd (char *args
, int from_tty
)
7178 /* We can't just use cmd_show_list here, because we want to skip
7179 the redundant "show remote Z-packet" and the legacy aliases. */
7180 struct cleanup
*showlist_chain
;
7181 struct cmd_list_element
*list
= remote_show_cmdlist
;
7183 showlist_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "showlist");
7184 for (; list
!= NULL
; list
= list
->next
)
7185 if (strcmp (list
->name
, "Z-packet") == 0)
7187 else if (list
->type
== not_set_cmd
)
7188 /* Alias commands are exactly like the original, except they
7189 don't have the normal type. */
7193 struct cleanup
*option_chain
7194 = make_cleanup_ui_out_tuple_begin_end (uiout
, "option");
7195 ui_out_field_string (uiout
, "name", list
->name
);
7196 ui_out_text (uiout
, ": ");
7197 if (list
->type
== show_cmd
)
7198 do_setshow_command ((char *) NULL
, from_tty
, list
);
7200 cmd_func (list
, NULL
, from_tty
);
7201 /* Close the tuple. */
7202 do_cleanups (option_chain
);
7205 /* Close the tuple. */
7206 do_cleanups (showlist_chain
);
7210 /* Function to be called whenever a new objfile (shlib) is detected. */
7212 remote_new_objfile (struct objfile
*objfile
)
7214 if (remote_desc
!= 0) /* Have a remote connection. */
7215 remote_check_symbols (objfile
);
7219 _initialize_remote (void)
7221 struct remote_state
*rs
;
7223 /* architecture specific data */
7224 remote_gdbarch_data_handle
=
7225 gdbarch_data_register_post_init (init_remote_state
);
7226 remote_g_packet_data_handle
=
7227 gdbarch_data_register_pre_init (remote_g_packet_data_init
);
7229 /* Initialize the per-target state. At the moment there is only one
7230 of these, not one per target. Only one target is active at a
7231 time. The default buffer size is unimportant; it will be expanded
7232 whenever a larger buffer is needed. */
7233 rs
= get_remote_state_raw ();
7235 rs
->buf
= xmalloc (rs
->buf_size
);
7238 add_target (&remote_ops
);
7240 init_extended_remote_ops ();
7241 add_target (&extended_remote_ops
);
7243 /* Hook into new objfile notification. */
7244 observer_attach_new_objfile (remote_new_objfile
);
7246 /* Set up signal handlers. */
7247 sigint_remote_token
=
7248 create_async_signal_handler (async_remote_interrupt
, NULL
);
7249 sigint_remote_twice_token
=
7250 create_async_signal_handler (inferior_event_handler_wrapper
, NULL
);
7253 init_remote_threadtests ();
7256 /* set/show remote ... */
7258 add_prefix_cmd ("remote", class_maintenance
, set_remote_cmd
, _("\
7259 Remote protocol specific variables\n\
7260 Configure various remote-protocol specific variables such as\n\
7261 the packets being used"),
7262 &remote_set_cmdlist
, "set remote ",
7263 0 /* allow-unknown */, &setlist
);
7264 add_prefix_cmd ("remote", class_maintenance
, show_remote_cmd
, _("\
7265 Remote protocol specific variables\n\
7266 Configure various remote-protocol specific variables such as\n\
7267 the packets being used"),
7268 &remote_show_cmdlist
, "show remote ",
7269 0 /* allow-unknown */, &showlist
);
7271 add_cmd ("compare-sections", class_obscure
, compare_sections_command
, _("\
7272 Compare section data on target to the exec file.\n\
7273 Argument is a single section name (default: all loaded sections)."),
7276 add_cmd ("packet", class_maintenance
, packet_command
, _("\
7277 Send an arbitrary packet to a remote target.\n\
7278 maintenance packet TEXT\n\
7279 If GDB is talking to an inferior via the GDB serial protocol, then\n\
7280 this command sends the string TEXT to the inferior, and displays the\n\
7281 response packet. GDB supplies the initial `$' character, and the\n\
7282 terminating `#' character and checksum."),
7285 add_setshow_boolean_cmd ("remotebreak", no_class
, &remote_break
, _("\
7286 Set whether to send break if interrupted."), _("\
7287 Show whether to send break if interrupted."), _("\
7288 If set, a break, instead of a cntrl-c, is sent to the remote target."),
7289 NULL
, NULL
, /* FIXME: i18n: Whether to send break if interrupted is %s. */
7290 &setlist
, &showlist
);
7292 /* Install commands for configuring memory read/write packets. */
7294 add_cmd ("remotewritesize", no_class
, set_memory_write_packet_size
, _("\
7295 Set the maximum number of bytes per memory write packet (deprecated)."),
7297 add_cmd ("remotewritesize", no_class
, show_memory_write_packet_size
, _("\
7298 Show the maximum number of bytes per memory write packet (deprecated)."),
7300 add_cmd ("memory-write-packet-size", no_class
,
7301 set_memory_write_packet_size
, _("\
7302 Set the maximum number of bytes per memory-write packet.\n\
7303 Specify the number of bytes in a packet or 0 (zero) for the\n\
7304 default packet size. The actual limit is further reduced\n\
7305 dependent on the target. Specify ``fixed'' to disable the\n\
7306 further restriction and ``limit'' to enable that restriction."),
7307 &remote_set_cmdlist
);
7308 add_cmd ("memory-read-packet-size", no_class
,
7309 set_memory_read_packet_size
, _("\
7310 Set the maximum number of bytes per memory-read packet.\n\
7311 Specify the number of bytes in a packet or 0 (zero) for the\n\
7312 default packet size. The actual limit is further reduced\n\
7313 dependent on the target. Specify ``fixed'' to disable the\n\
7314 further restriction and ``limit'' to enable that restriction."),
7315 &remote_set_cmdlist
);
7316 add_cmd ("memory-write-packet-size", no_class
,
7317 show_memory_write_packet_size
,
7318 _("Show the maximum number of bytes per memory-write packet."),
7319 &remote_show_cmdlist
);
7320 add_cmd ("memory-read-packet-size", no_class
,
7321 show_memory_read_packet_size
,
7322 _("Show the maximum number of bytes per memory-read packet."),
7323 &remote_show_cmdlist
);
7325 add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class
,
7326 &remote_hw_watchpoint_limit
, _("\
7327 Set the maximum number of target hardware watchpoints."), _("\
7328 Show the maximum number of target hardware watchpoints."), _("\
7329 Specify a negative limit for unlimited."),
7330 NULL
, NULL
, /* FIXME: i18n: The maximum number of target hardware watchpoints is %s. */
7331 &remote_set_cmdlist
, &remote_show_cmdlist
);
7332 add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class
,
7333 &remote_hw_breakpoint_limit
, _("\
7334 Set the maximum number of target hardware breakpoints."), _("\
7335 Show the maximum number of target hardware breakpoints."), _("\
7336 Specify a negative limit for unlimited."),
7337 NULL
, NULL
, /* FIXME: i18n: The maximum number of target hardware breakpoints is %s. */
7338 &remote_set_cmdlist
, &remote_show_cmdlist
);
7340 add_setshow_integer_cmd ("remoteaddresssize", class_obscure
,
7341 &remote_address_size
, _("\
7342 Set the maximum size of the address (in bits) in a memory packet."), _("\
7343 Show the maximum size of the address (in bits) in a memory packet."), NULL
,
7345 NULL
, /* FIXME: i18n: */
7346 &setlist
, &showlist
);
7348 add_packet_config_cmd (&remote_protocol_packets
[PACKET_X
],
7349 "X", "binary-download", 1);
7351 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vCont
],
7352 "vCont", "verbose-resume", 0);
7354 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QPassSignals
],
7355 "QPassSignals", "pass-signals", 0);
7357 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSymbol
],
7358 "qSymbol", "symbol-lookup", 0);
7360 add_packet_config_cmd (&remote_protocol_packets
[PACKET_P
],
7361 "P", "set-register", 1);
7363 add_packet_config_cmd (&remote_protocol_packets
[PACKET_p
],
7364 "p", "fetch-register", 1);
7366 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z0
],
7367 "Z0", "software-breakpoint", 0);
7369 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z1
],
7370 "Z1", "hardware-breakpoint", 0);
7372 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z2
],
7373 "Z2", "write-watchpoint", 0);
7375 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z3
],
7376 "Z3", "read-watchpoint", 0);
7378 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z4
],
7379 "Z4", "access-watchpoint", 0);
7381 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_auxv
],
7382 "qXfer:auxv:read", "read-aux-vector", 0);
7384 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_features
],
7385 "qXfer:features:read", "target-features", 0);
7387 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_libraries
],
7388 "qXfer:libraries:read", "library-info", 0);
7390 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_memory_map
],
7391 "qXfer:memory-map:read", "memory-map", 0);
7393 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_spu_read
],
7394 "qXfer:spu:read", "read-spu-object", 0);
7396 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_spu_write
],
7397 "qXfer:spu:write", "write-spu-object", 0);
7399 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qGetTLSAddr
],
7400 "qGetTLSAddr", "get-thread-local-storage-address",
7403 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSupported
],
7404 "qSupported", "supported-packets", 0);
7406 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSearch_memory
],
7407 "qSearch:memory", "search-memory", 0);
7409 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_open
],
7410 "vFile:open", "hostio-open", 0);
7412 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_pread
],
7413 "vFile:pread", "hostio-pread", 0);
7415 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_pwrite
],
7416 "vFile:pwrite", "hostio-pwrite", 0);
7418 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_close
],
7419 "vFile:close", "hostio-close", 0);
7421 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_unlink
],
7422 "vFile:unlink", "hostio-unlink", 0);
7424 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vAttach
],
7425 "vAttach", "attach", 0);
7427 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vRun
],
7430 /* Keep the old ``set remote Z-packet ...'' working. Each individual
7431 Z sub-packet has its own set and show commands, but users may
7432 have sets to this variable in their .gdbinit files (or in their
7434 add_setshow_auto_boolean_cmd ("Z-packet", class_obscure
,
7435 &remote_Z_packet_detect
, _("\
7436 Set use of remote protocol `Z' packets"), _("\
7437 Show use of remote protocol `Z' packets "), _("\
7438 When set, GDB will attempt to use the remote breakpoint and watchpoint\n\
7440 set_remote_protocol_Z_packet_cmd
,
7441 show_remote_protocol_Z_packet_cmd
, /* FIXME: i18n: Use of remote protocol `Z' packets is %s. */
7442 &remote_set_cmdlist
, &remote_show_cmdlist
);
7444 add_prefix_cmd ("remote", class_files
, remote_command
, _("\
7445 Manipulate files on the remote system\n\
7446 Transfer files to and from the remote target system."),
7447 &remote_cmdlist
, "remote ",
7448 0 /* allow-unknown */, &cmdlist
);
7450 add_cmd ("put", class_files
, remote_put_command
,
7451 _("Copy a local file to the remote system."),
7454 add_cmd ("get", class_files
, remote_get_command
,
7455 _("Copy a remote file to the local system."),
7458 add_cmd ("delete", class_files
, remote_delete_command
,
7459 _("Delete a remote file."),
7462 remote_exec_file
= xstrdup ("");
7463 add_setshow_string_noescape_cmd ("exec-file", class_files
,
7464 &remote_exec_file
, _("\
7465 Set the remote pathname for \"run\""), _("\
7466 Show the remote pathname for \"run\""), NULL
, NULL
, NULL
,
7467 &remote_set_cmdlist
, &remote_show_cmdlist
);
7469 add_setshow_boolean_cmd ("remote-async", class_maintenance
,
7470 &remote_async_permitted_set
, _("\
7471 Set whether gdb controls the remote inferior in asynchronous mode."), _("\
7472 Show whether gdb controls the remote inferior in asynchronous mode."), _("\
7473 Tells gdb whether to control the remote inferior in asynchronous mode."),
7474 set_maintenance_remote_async_permitted
,
7475 show_maintenance_remote_async_permitted
,
7476 &maintenance_set_cmdlist
,
7477 &maintenance_show_cmdlist
);
7480 /* Eventually initialize fileio. See fileio.c */
7481 initialize_remote_fileio (remote_set_cmdlist
, remote_show_cmdlist
);