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_async_resume (ptid_t ptid
, int step
,
96 enum target_signal siggnal
);
97 static void remote_open (char *name
, int from_tty
);
98 static void remote_async_open (char *name
, int from_tty
);
100 static void extended_remote_open (char *name
, int from_tty
);
101 static void extended_remote_async_open (char *name
, int from_tty
);
103 static void remote_open_1 (char *, int, struct target_ops
*, int extended_p
,
106 static void remote_close (int quitting
);
108 static void remote_store_registers (struct regcache
*regcache
, int regno
);
110 static void remote_mourn (void);
111 static void remote_async_mourn (void);
113 static void extended_remote_restart (void);
115 static void extended_remote_mourn (void);
117 static void remote_mourn_1 (struct target_ops
*);
119 static void remote_send (char **buf
, long *sizeof_buf_p
);
121 static int readchar (int timeout
);
123 static ptid_t
remote_wait (ptid_t ptid
,
124 struct target_waitstatus
*status
);
125 static ptid_t
remote_async_wait (ptid_t ptid
,
126 struct target_waitstatus
*status
);
128 static void remote_kill (void);
129 static void remote_async_kill (void);
131 static int tohex (int nib
);
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);
213 static struct cmd_list_element
*remote_cmdlist
;
215 /* For "set remote" and "show remote". */
217 static struct cmd_list_element
*remote_set_cmdlist
;
218 static struct cmd_list_element
*remote_show_cmdlist
;
220 /* Description of the remote protocol state for the currently
221 connected target. This is per-target state, and independent of the
222 selected architecture. */
226 /* A buffer to use for incoming packets, and its current size. The
227 buffer is grown dynamically for larger incoming packets.
228 Outgoing packets may also be constructed in this buffer.
229 BUF_SIZE is always at least REMOTE_PACKET_SIZE;
230 REMOTE_PACKET_SIZE should be used to limit the length of outgoing
235 /* If we negotiated packet size explicitly (and thus can bypass
236 heuristics for the largest packet size that will not overflow
237 a buffer in the stub), this will be set to that packet size.
238 Otherwise zero, meaning to use the guessed size. */
239 long explicit_packet_size
;
241 /* remote_wait is normally called when the target is running and
242 waits for a stop reply packet. But sometimes we need to call it
243 when the target is already stopped. We can send a "?" packet
244 and have remote_wait read the response. Or, if we already have
245 the response, we can stash it in BUF and tell remote_wait to
246 skip calling getpkt. This flag is set when BUF contains a
247 stop reply packet and the target is not waiting. */
248 int cached_wait_status
;
251 /* This data could be associated with a target, but we do not always
252 have access to the current target when we need it, so for now it is
253 static. This will be fine for as long as only one target is in use
255 static struct remote_state remote_state
;
257 static struct remote_state
*
258 get_remote_state_raw (void)
260 return &remote_state
;
263 /* Description of the remote protocol for a given architecture. */
267 long offset
; /* Offset into G packet. */
268 long regnum
; /* GDB's internal register number. */
269 LONGEST pnum
; /* Remote protocol register number. */
270 int in_g_packet
; /* Always part of G packet. */
271 /* long size in bytes; == register_size (current_gdbarch, regnum);
273 /* char *name; == gdbarch_register_name (current_gdbarch, regnum);
277 struct remote_arch_state
279 /* Description of the remote protocol registers. */
280 long sizeof_g_packet
;
282 /* Description of the remote protocol registers indexed by REGNUM
283 (making an array gdbarch_num_regs in size). */
284 struct packet_reg
*regs
;
286 /* This is the size (in chars) of the first response to the ``g''
287 packet. It is used as a heuristic when determining the maximum
288 size of memory-read and memory-write packets. A target will
289 typically only reserve a buffer large enough to hold the ``g''
290 packet. The size does not include packet overhead (headers and
292 long actual_register_packet_size
;
294 /* This is the maximum size (in chars) of a non read/write packet.
295 It is also used as a cap on the size of read/write packets. */
296 long remote_packet_size
;
300 /* Handle for retreving the remote protocol data from gdbarch. */
301 static struct gdbarch_data
*remote_gdbarch_data_handle
;
303 static struct remote_arch_state
*
304 get_remote_arch_state (void)
306 return gdbarch_data (current_gdbarch
, remote_gdbarch_data_handle
);
309 /* Fetch the global remote target state. */
311 static struct remote_state
*
312 get_remote_state (void)
314 /* Make sure that the remote architecture state has been
315 initialized, because doing so might reallocate rs->buf. Any
316 function which calls getpkt also needs to be mindful of changes
317 to rs->buf, but this call limits the number of places which run
319 get_remote_arch_state ();
321 return get_remote_state_raw ();
325 compare_pnums (const void *lhs_
, const void *rhs_
)
327 const struct packet_reg
* const *lhs
= lhs_
;
328 const struct packet_reg
* const *rhs
= rhs_
;
330 if ((*lhs
)->pnum
< (*rhs
)->pnum
)
332 else if ((*lhs
)->pnum
== (*rhs
)->pnum
)
339 init_remote_state (struct gdbarch
*gdbarch
)
341 int regnum
, num_remote_regs
, offset
;
342 struct remote_state
*rs
= get_remote_state_raw ();
343 struct remote_arch_state
*rsa
;
344 struct packet_reg
**remote_regs
;
346 rsa
= GDBARCH_OBSTACK_ZALLOC (gdbarch
, struct remote_arch_state
);
348 /* Use the architecture to build a regnum<->pnum table, which will be
349 1:1 unless a feature set specifies otherwise. */
350 rsa
->regs
= GDBARCH_OBSTACK_CALLOC (gdbarch
,
351 gdbarch_num_regs (gdbarch
),
353 for (regnum
= 0; regnum
< gdbarch_num_regs (gdbarch
); regnum
++)
355 struct packet_reg
*r
= &rsa
->regs
[regnum
];
357 if (register_size (gdbarch
, regnum
) == 0)
358 /* Do not try to fetch zero-sized (placeholder) registers. */
361 r
->pnum
= gdbarch_remote_register_number (gdbarch
, regnum
);
366 /* Define the g/G packet format as the contents of each register
367 with a remote protocol number, in order of ascending protocol
370 remote_regs
= alloca (gdbarch_num_regs (gdbarch
)
371 * sizeof (struct packet_reg
*));
372 for (num_remote_regs
= 0, regnum
= 0;
373 regnum
< gdbarch_num_regs (gdbarch
);
375 if (rsa
->regs
[regnum
].pnum
!= -1)
376 remote_regs
[num_remote_regs
++] = &rsa
->regs
[regnum
];
378 qsort (remote_regs
, num_remote_regs
, sizeof (struct packet_reg
*),
381 for (regnum
= 0, offset
= 0; regnum
< num_remote_regs
; regnum
++)
383 remote_regs
[regnum
]->in_g_packet
= 1;
384 remote_regs
[regnum
]->offset
= offset
;
385 offset
+= register_size (gdbarch
, remote_regs
[regnum
]->regnum
);
388 /* Record the maximum possible size of the g packet - it may turn out
390 rsa
->sizeof_g_packet
= offset
;
392 /* Default maximum number of characters in a packet body. Many
393 remote stubs have a hardwired buffer size of 400 bytes
394 (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used
395 as the maximum packet-size to ensure that the packet and an extra
396 NUL character can always fit in the buffer. This stops GDB
397 trashing stubs that try to squeeze an extra NUL into what is
398 already a full buffer (As of 1999-12-04 that was most stubs). */
399 rsa
->remote_packet_size
= 400 - 1;
401 /* This one is filled in when a ``g'' packet is received. */
402 rsa
->actual_register_packet_size
= 0;
404 /* Should rsa->sizeof_g_packet needs more space than the
405 default, adjust the size accordingly. Remember that each byte is
406 encoded as two characters. 32 is the overhead for the packet
407 header / footer. NOTE: cagney/1999-10-26: I suspect that 8
408 (``$NN:G...#NN'') is a better guess, the below has been padded a
410 if (rsa
->sizeof_g_packet
> ((rsa
->remote_packet_size
- 32) / 2))
411 rsa
->remote_packet_size
= (rsa
->sizeof_g_packet
* 2 + 32);
413 /* Make sure that the packet buffer is plenty big enough for
414 this architecture. */
415 if (rs
->buf_size
< rsa
->remote_packet_size
)
417 rs
->buf_size
= 2 * rsa
->remote_packet_size
;
418 rs
->buf
= xrealloc (rs
->buf
, rs
->buf_size
);
424 /* Return the current allowed size of a remote packet. This is
425 inferred from the current architecture, and should be used to
426 limit the length of outgoing packets. */
428 get_remote_packet_size (void)
430 struct remote_state
*rs
= get_remote_state ();
431 struct remote_arch_state
*rsa
= get_remote_arch_state ();
433 if (rs
->explicit_packet_size
)
434 return rs
->explicit_packet_size
;
436 return rsa
->remote_packet_size
;
439 static struct packet_reg
*
440 packet_reg_from_regnum (struct remote_arch_state
*rsa
, long regnum
)
442 if (regnum
< 0 && regnum
>= gdbarch_num_regs (current_gdbarch
))
446 struct packet_reg
*r
= &rsa
->regs
[regnum
];
447 gdb_assert (r
->regnum
== regnum
);
452 static struct packet_reg
*
453 packet_reg_from_pnum (struct remote_arch_state
*rsa
, LONGEST pnum
)
456 for (i
= 0; i
< gdbarch_num_regs (current_gdbarch
); i
++)
458 struct packet_reg
*r
= &rsa
->regs
[i
];
465 /* FIXME: graces/2002-08-08: These variables should eventually be
466 bound to an instance of the target object (as in gdbarch-tdep()),
467 when such a thing exists. */
469 /* This is set to the data address of the access causing the target
470 to stop for a watchpoint. */
471 static CORE_ADDR remote_watch_data_address
;
473 /* This is non-zero if target stopped for a watchpoint. */
474 static int remote_stopped_by_watchpoint_p
;
476 static struct target_ops remote_ops
;
478 static struct target_ops extended_remote_ops
;
480 /* Temporary target ops. Just like the remote_ops and
481 extended_remote_ops, but with asynchronous support. */
482 static struct target_ops remote_async_ops
;
484 static int remote_async_mask_value
= 1;
486 static struct target_ops extended_async_remote_ops
;
488 /* FIXME: cagney/1999-09-23: Even though getpkt was called with
489 ``forever'' still use the normal timeout mechanism. This is
490 currently used by the ASYNC code to guarentee that target reads
491 during the initial connect always time-out. Once getpkt has been
492 modified to return a timeout indication and, in turn
493 remote_wait()/wait_for_inferior() have gained a timeout parameter
495 static int wait_forever_enabled_p
= 1;
498 /* This variable chooses whether to send a ^C or a break when the user
499 requests program interruption. Although ^C is usually what remote
500 systems expect, and that is the default here, sometimes a break is
501 preferable instead. */
503 static int remote_break
;
505 /* Descriptor for I/O to remote machine. Initialize it to NULL so that
506 remote_open knows that we don't have a file open when the program
508 static struct serial
*remote_desc
= NULL
;
510 /* This variable sets the number of bits in an address that are to be
511 sent in a memory ("M" or "m") packet. Normally, after stripping
512 leading zeros, the entire address would be sent. This variable
513 restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The
514 initial implementation of remote.c restricted the address sent in
515 memory packets to ``host::sizeof long'' bytes - (typically 32
516 bits). Consequently, for 64 bit targets, the upper 32 bits of an
517 address was never sent. Since fixing this bug may cause a break in
518 some remote targets this variable is principly provided to
519 facilitate backward compatibility. */
521 static int remote_address_size
;
523 /* Tempoary to track who currently owns the terminal. See
524 target_async_terminal_* for more details. */
526 static int remote_async_terminal_ours_p
;
528 /* The executable file to use for "run" on the remote side. */
530 static char *remote_exec_file
= "";
533 /* User configurable variables for the number of characters in a
534 memory read/write packet. MIN (rsa->remote_packet_size,
535 rsa->sizeof_g_packet) is the default. Some targets need smaller
536 values (fifo overruns, et.al.) and some users need larger values
537 (speed up transfers). The variables ``preferred_*'' (the user
538 request), ``current_*'' (what was actually set) and ``forced_*''
539 (Positive - a soft limit, negative - a hard limit). */
541 struct memory_packet_config
548 /* Compute the current size of a read/write packet. Since this makes
549 use of ``actual_register_packet_size'' the computation is dynamic. */
552 get_memory_packet_size (struct memory_packet_config
*config
)
554 struct remote_state
*rs
= get_remote_state ();
555 struct remote_arch_state
*rsa
= get_remote_arch_state ();
557 /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk
558 law?) that some hosts don't cope very well with large alloca()
559 calls. Eventually the alloca() code will be replaced by calls to
560 xmalloc() and make_cleanups() allowing this restriction to either
561 be lifted or removed. */
562 #ifndef MAX_REMOTE_PACKET_SIZE
563 #define MAX_REMOTE_PACKET_SIZE 16384
565 /* NOTE: 20 ensures we can write at least one byte. */
566 #ifndef MIN_REMOTE_PACKET_SIZE
567 #define MIN_REMOTE_PACKET_SIZE 20
572 if (config
->size
<= 0)
573 what_they_get
= MAX_REMOTE_PACKET_SIZE
;
575 what_they_get
= config
->size
;
579 what_they_get
= get_remote_packet_size ();
580 /* Limit the packet to the size specified by the user. */
582 && what_they_get
> config
->size
)
583 what_they_get
= config
->size
;
585 /* Limit it to the size of the targets ``g'' response unless we have
586 permission from the stub to use a larger packet size. */
587 if (rs
->explicit_packet_size
== 0
588 && rsa
->actual_register_packet_size
> 0
589 && what_they_get
> rsa
->actual_register_packet_size
)
590 what_they_get
= rsa
->actual_register_packet_size
;
592 if (what_they_get
> MAX_REMOTE_PACKET_SIZE
)
593 what_they_get
= MAX_REMOTE_PACKET_SIZE
;
594 if (what_they_get
< MIN_REMOTE_PACKET_SIZE
)
595 what_they_get
= MIN_REMOTE_PACKET_SIZE
;
597 /* Make sure there is room in the global buffer for this packet
598 (including its trailing NUL byte). */
599 if (rs
->buf_size
< what_they_get
+ 1)
601 rs
->buf_size
= 2 * what_they_get
;
602 rs
->buf
= xrealloc (rs
->buf
, 2 * what_they_get
);
605 return what_they_get
;
608 /* Update the size of a read/write packet. If they user wants
609 something really big then do a sanity check. */
612 set_memory_packet_size (char *args
, struct memory_packet_config
*config
)
614 int fixed_p
= config
->fixed_p
;
615 long size
= config
->size
;
617 error (_("Argument required (integer, `fixed' or `limited')."));
618 else if (strcmp (args
, "hard") == 0
619 || strcmp (args
, "fixed") == 0)
621 else if (strcmp (args
, "soft") == 0
622 || strcmp (args
, "limit") == 0)
627 size
= strtoul (args
, &end
, 0);
629 error (_("Invalid %s (bad syntax)."), config
->name
);
631 /* Instead of explicitly capping the size of a packet to
632 MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is
633 instead allowed to set the size to something arbitrarily
635 if (size
> MAX_REMOTE_PACKET_SIZE
)
636 error (_("Invalid %s (too large)."), config
->name
);
640 if (fixed_p
&& !config
->fixed_p
)
642 if (! query (_("The target may not be able to correctly handle a %s\n"
643 "of %ld bytes. Change the packet size? "),
645 error (_("Packet size not changed."));
647 /* Update the config. */
648 config
->fixed_p
= fixed_p
;
653 show_memory_packet_size (struct memory_packet_config
*config
)
655 printf_filtered (_("The %s is %ld. "), config
->name
, config
->size
);
657 printf_filtered (_("Packets are fixed at %ld bytes.\n"),
658 get_memory_packet_size (config
));
660 printf_filtered (_("Packets are limited to %ld bytes.\n"),
661 get_memory_packet_size (config
));
664 static struct memory_packet_config memory_write_packet_config
=
666 "memory-write-packet-size",
670 set_memory_write_packet_size (char *args
, int from_tty
)
672 set_memory_packet_size (args
, &memory_write_packet_config
);
676 show_memory_write_packet_size (char *args
, int from_tty
)
678 show_memory_packet_size (&memory_write_packet_config
);
682 get_memory_write_packet_size (void)
684 return get_memory_packet_size (&memory_write_packet_config
);
687 static struct memory_packet_config memory_read_packet_config
=
689 "memory-read-packet-size",
693 set_memory_read_packet_size (char *args
, int from_tty
)
695 set_memory_packet_size (args
, &memory_read_packet_config
);
699 show_memory_read_packet_size (char *args
, int from_tty
)
701 show_memory_packet_size (&memory_read_packet_config
);
705 get_memory_read_packet_size (void)
707 long size
= get_memory_packet_size (&memory_read_packet_config
);
708 /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an
709 extra buffer size argument before the memory read size can be
710 increased beyond this. */
711 if (size
> get_remote_packet_size ())
712 size
= get_remote_packet_size ();
717 /* Generic configuration support for packets the stub optionally
718 supports. Allows the user to specify the use of the packet as well
719 as allowing GDB to auto-detect support in the remote stub. */
723 PACKET_SUPPORT_UNKNOWN
= 0,
732 enum auto_boolean detect
;
733 enum packet_support support
;
736 /* Analyze a packet's return value and update the packet config
747 update_packet_config (struct packet_config
*config
)
749 switch (config
->detect
)
751 case AUTO_BOOLEAN_TRUE
:
752 config
->support
= PACKET_ENABLE
;
754 case AUTO_BOOLEAN_FALSE
:
755 config
->support
= PACKET_DISABLE
;
757 case AUTO_BOOLEAN_AUTO
:
758 config
->support
= PACKET_SUPPORT_UNKNOWN
;
764 show_packet_config_cmd (struct packet_config
*config
)
766 char *support
= "internal-error";
767 switch (config
->support
)
773 support
= "disabled";
775 case PACKET_SUPPORT_UNKNOWN
:
779 switch (config
->detect
)
781 case AUTO_BOOLEAN_AUTO
:
782 printf_filtered (_("Support for the `%s' packet is auto-detected, currently %s.\n"),
783 config
->name
, support
);
785 case AUTO_BOOLEAN_TRUE
:
786 case AUTO_BOOLEAN_FALSE
:
787 printf_filtered (_("Support for the `%s' packet is currently %s.\n"),
788 config
->name
, support
);
794 add_packet_config_cmd (struct packet_config
*config
, const char *name
,
795 const char *title
, int legacy
)
802 config
->title
= title
;
803 config
->detect
= AUTO_BOOLEAN_AUTO
;
804 config
->support
= PACKET_SUPPORT_UNKNOWN
;
805 set_doc
= xstrprintf ("Set use of remote protocol `%s' (%s) packet",
807 show_doc
= xstrprintf ("Show current use of remote protocol `%s' (%s) packet",
809 /* set/show TITLE-packet {auto,on,off} */
810 cmd_name
= xstrprintf ("%s-packet", title
);
811 add_setshow_auto_boolean_cmd (cmd_name
, class_obscure
,
812 &config
->detect
, set_doc
, show_doc
, NULL
, /* help_doc */
813 set_remote_protocol_packet_cmd
,
814 show_remote_protocol_packet_cmd
,
815 &remote_set_cmdlist
, &remote_show_cmdlist
);
816 /* set/show remote NAME-packet {auto,on,off} -- legacy. */
820 legacy_name
= xstrprintf ("%s-packet", name
);
821 add_alias_cmd (legacy_name
, cmd_name
, class_obscure
, 0,
822 &remote_set_cmdlist
);
823 add_alias_cmd (legacy_name
, cmd_name
, class_obscure
, 0,
824 &remote_show_cmdlist
);
828 static enum packet_result
829 packet_check_result (const char *buf
)
833 /* The stub recognized the packet request. Check that the
834 operation succeeded. */
836 && isxdigit (buf
[1]) && isxdigit (buf
[2])
838 /* "Enn" - definitly an error. */
841 /* Always treat "E." as an error. This will be used for
842 more verbose error messages, such as E.memtypes. */
843 if (buf
[0] == 'E' && buf
[1] == '.')
846 /* The packet may or may not be OK. Just assume it is. */
850 /* The stub does not support the packet. */
851 return PACKET_UNKNOWN
;
854 static enum packet_result
855 packet_ok (const char *buf
, struct packet_config
*config
)
857 enum packet_result result
;
859 result
= packet_check_result (buf
);
864 /* The stub recognized the packet request. */
865 switch (config
->support
)
867 case PACKET_SUPPORT_UNKNOWN
:
869 fprintf_unfiltered (gdb_stdlog
,
870 "Packet %s (%s) is supported\n",
871 config
->name
, config
->title
);
872 config
->support
= PACKET_ENABLE
;
875 internal_error (__FILE__
, __LINE__
,
876 _("packet_ok: attempt to use a disabled packet"));
883 /* The stub does not support the packet. */
884 switch (config
->support
)
887 if (config
->detect
== AUTO_BOOLEAN_AUTO
)
888 /* If the stub previously indicated that the packet was
889 supported then there is a protocol error.. */
890 error (_("Protocol error: %s (%s) conflicting enabled responses."),
891 config
->name
, config
->title
);
893 /* The user set it wrong. */
894 error (_("Enabled packet %s (%s) not recognized by stub"),
895 config
->name
, config
->title
);
897 case PACKET_SUPPORT_UNKNOWN
:
899 fprintf_unfiltered (gdb_stdlog
,
900 "Packet %s (%s) is NOT supported\n",
901 config
->name
, config
->title
);
902 config
->support
= PACKET_DISABLE
;
930 PACKET_qXfer_features
,
931 PACKET_qXfer_libraries
,
932 PACKET_qXfer_memory_map
,
933 PACKET_qXfer_spu_read
,
934 PACKET_qXfer_spu_write
,
943 static struct packet_config remote_protocol_packets
[PACKET_MAX
];
946 set_remote_protocol_packet_cmd (char *args
, int from_tty
,
947 struct cmd_list_element
*c
)
949 struct packet_config
*packet
;
951 for (packet
= remote_protocol_packets
;
952 packet
< &remote_protocol_packets
[PACKET_MAX
];
955 if (&packet
->detect
== c
->var
)
957 update_packet_config (packet
);
961 internal_error (__FILE__
, __LINE__
, "Could not find config for %s",
966 show_remote_protocol_packet_cmd (struct ui_file
*file
, int from_tty
,
967 struct cmd_list_element
*c
,
970 struct packet_config
*packet
;
972 for (packet
= remote_protocol_packets
;
973 packet
< &remote_protocol_packets
[PACKET_MAX
];
976 if (&packet
->detect
== c
->var
)
978 show_packet_config_cmd (packet
);
982 internal_error (__FILE__
, __LINE__
, "Could not find config for %s",
986 /* Should we try one of the 'Z' requests? */
990 Z_PACKET_SOFTWARE_BP
,
991 Z_PACKET_HARDWARE_BP
,
998 /* For compatibility with older distributions. Provide a ``set remote
999 Z-packet ...'' command that updates all the Z packet types. */
1001 static enum auto_boolean remote_Z_packet_detect
;
1004 set_remote_protocol_Z_packet_cmd (char *args
, int from_tty
,
1005 struct cmd_list_element
*c
)
1008 for (i
= 0; i
< NR_Z_PACKET_TYPES
; i
++)
1010 remote_protocol_packets
[PACKET_Z0
+ i
].detect
= remote_Z_packet_detect
;
1011 update_packet_config (&remote_protocol_packets
[PACKET_Z0
+ i
]);
1016 show_remote_protocol_Z_packet_cmd (struct ui_file
*file
, int from_tty
,
1017 struct cmd_list_element
*c
,
1021 for (i
= 0; i
< NR_Z_PACKET_TYPES
; i
++)
1023 show_packet_config_cmd (&remote_protocol_packets
[PACKET_Z0
+ i
]);
1027 /* Should we try the 'ThreadInfo' query packet?
1029 This variable (NOT available to the user: auto-detect only!)
1030 determines whether GDB will use the new, simpler "ThreadInfo"
1031 query or the older, more complex syntax for thread queries.
1032 This is an auto-detect variable (set to true at each connect,
1033 and set to false when the target fails to recognize it). */
1035 static int use_threadinfo_query
;
1036 static int use_threadextra_query
;
1038 /* Tokens for use by the asynchronous signal handlers for SIGINT. */
1039 static struct async_signal_handler
*sigint_remote_twice_token
;
1040 static struct async_signal_handler
*sigint_remote_token
;
1045 /* These are the threads which we last sent to the remote system.
1046 -1 for all or -2 for not sent yet. */
1047 static int general_thread
;
1048 static int continue_thread
;
1050 /* Call this function as a result of
1051 1) A halt indication (T packet) containing a thread id
1052 2) A direct query of currthread
1053 3) Successful execution of set thread
1057 record_currthread (int currthread
)
1059 general_thread
= currthread
;
1061 /* If this is a new thread, add it to GDB's thread list.
1062 If we leave it up to WFI to do this, bad things will happen. */
1063 if (!in_thread_list (pid_to_ptid (currthread
)))
1064 add_thread (pid_to_ptid (currthread
));
1067 static char *last_pass_packet
;
1069 /* If 'QPassSignals' is supported, tell the remote stub what signals
1070 it can simply pass through to the inferior without reporting. */
1073 remote_pass_signals (void)
1075 if (remote_protocol_packets
[PACKET_QPassSignals
].support
!= PACKET_DISABLE
)
1077 char *pass_packet
, *p
;
1078 int numsigs
= (int) TARGET_SIGNAL_LAST
;
1081 gdb_assert (numsigs
< 256);
1082 for (i
= 0; i
< numsigs
; i
++)
1084 if (signal_stop_state (i
) == 0
1085 && signal_print_state (i
) == 0
1086 && signal_pass_state (i
) == 1)
1089 pass_packet
= xmalloc (count
* 3 + strlen ("QPassSignals:") + 1);
1090 strcpy (pass_packet
, "QPassSignals:");
1091 p
= pass_packet
+ strlen (pass_packet
);
1092 for (i
= 0; i
< numsigs
; i
++)
1094 if (signal_stop_state (i
) == 0
1095 && signal_print_state (i
) == 0
1096 && signal_pass_state (i
) == 1)
1099 *p
++ = tohex (i
>> 4);
1100 *p
++ = tohex (i
& 15);
1109 if (!last_pass_packet
|| strcmp (last_pass_packet
, pass_packet
))
1111 struct remote_state
*rs
= get_remote_state ();
1112 char *buf
= rs
->buf
;
1114 putpkt (pass_packet
);
1115 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1116 packet_ok (buf
, &remote_protocol_packets
[PACKET_QPassSignals
]);
1117 if (last_pass_packet
)
1118 xfree (last_pass_packet
);
1119 last_pass_packet
= pass_packet
;
1122 xfree (pass_packet
);
1126 #define MAGIC_NULL_PID 42000
1129 set_thread (int th
, int gen
)
1131 struct remote_state
*rs
= get_remote_state ();
1132 char *buf
= rs
->buf
;
1133 int state
= gen
? general_thread
: continue_thread
;
1139 buf
[1] = gen
? 'g' : 'c';
1140 if (th
== MAGIC_NULL_PID
)
1146 xsnprintf (&buf
[2], get_remote_packet_size () - 2, "-%x", -th
);
1148 xsnprintf (&buf
[2], get_remote_packet_size () - 2, "%x", th
);
1150 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1152 general_thread
= th
;
1154 continue_thread
= th
;
1157 /* Return nonzero if the thread TH is still alive on the remote system. */
1160 remote_thread_alive (ptid_t ptid
)
1162 struct remote_state
*rs
= get_remote_state ();
1163 int tid
= PIDGET (ptid
);
1166 xsnprintf (rs
->buf
, get_remote_packet_size (), "T-%08x", -tid
);
1168 xsnprintf (rs
->buf
, get_remote_packet_size (), "T%08x", tid
);
1170 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1171 return (rs
->buf
[0] == 'O' && rs
->buf
[1] == 'K');
1174 /* About these extended threadlist and threadinfo packets. They are
1175 variable length packets but, the fields within them are often fixed
1176 length. They are redundent enough to send over UDP as is the
1177 remote protocol in general. There is a matching unit test module
1180 #define OPAQUETHREADBYTES 8
1182 /* a 64 bit opaque identifier */
1183 typedef unsigned char threadref
[OPAQUETHREADBYTES
];
1185 /* WARNING: This threadref data structure comes from the remote O.S.,
1186 libstub protocol encoding, and remote.c. it is not particularly
1189 /* Right now, the internal structure is int. We want it to be bigger.
1193 typedef int gdb_threadref
; /* Internal GDB thread reference. */
1195 /* gdb_ext_thread_info is an internal GDB data structure which is
1196 equivalent to the reply of the remote threadinfo packet. */
1198 struct gdb_ext_thread_info
1200 threadref threadid
; /* External form of thread reference. */
1201 int active
; /* Has state interesting to GDB?
1203 char display
[256]; /* Brief state display, name,
1204 blocked/suspended. */
1205 char shortname
[32]; /* To be used to name threads. */
1206 char more_display
[256]; /* Long info, statistics, queue depth,
1210 /* The volume of remote transfers can be limited by submitting
1211 a mask containing bits specifying the desired information.
1212 Use a union of these values as the 'selection' parameter to
1213 get_thread_info. FIXME: Make these TAG names more thread specific.
1216 #define TAG_THREADID 1
1217 #define TAG_EXISTS 2
1218 #define TAG_DISPLAY 4
1219 #define TAG_THREADNAME 8
1220 #define TAG_MOREDISPLAY 16
1222 #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2)
1224 char *unpack_varlen_hex (char *buff
, ULONGEST
*result
);
1226 static char *unpack_nibble (char *buf
, int *val
);
1228 static char *pack_nibble (char *buf
, int nibble
);
1230 static char *pack_hex_byte (char *pkt
, int /* unsigned char */ byte
);
1232 static char *unpack_byte (char *buf
, int *value
);
1234 static char *pack_int (char *buf
, int value
);
1236 static char *unpack_int (char *buf
, int *value
);
1238 static char *unpack_string (char *src
, char *dest
, int length
);
1240 static char *pack_threadid (char *pkt
, threadref
*id
);
1242 static char *unpack_threadid (char *inbuf
, threadref
*id
);
1244 void int_to_threadref (threadref
*id
, int value
);
1246 static int threadref_to_int (threadref
*ref
);
1248 static void copy_threadref (threadref
*dest
, threadref
*src
);
1250 static int threadmatch (threadref
*dest
, threadref
*src
);
1252 static char *pack_threadinfo_request (char *pkt
, int mode
,
1255 static int remote_unpack_thread_info_response (char *pkt
,
1256 threadref
*expectedref
,
1257 struct gdb_ext_thread_info
1261 static int remote_get_threadinfo (threadref
*threadid
,
1262 int fieldset
, /*TAG mask */
1263 struct gdb_ext_thread_info
*info
);
1265 static char *pack_threadlist_request (char *pkt
, int startflag
,
1267 threadref
*nextthread
);
1269 static int parse_threadlist_response (char *pkt
,
1271 threadref
*original_echo
,
1272 threadref
*resultlist
,
1275 static int remote_get_threadlist (int startflag
,
1276 threadref
*nextthread
,
1280 threadref
*threadlist
);
1282 typedef int (*rmt_thread_action
) (threadref
*ref
, void *context
);
1284 static int remote_threadlist_iterator (rmt_thread_action stepfunction
,
1285 void *context
, int looplimit
);
1287 static int remote_newthread_step (threadref
*ref
, void *context
);
1289 /* Encode 64 bits in 16 chars of hex. */
1291 static const char hexchars
[] = "0123456789abcdef";
1294 ishex (int ch
, int *val
)
1296 if ((ch
>= 'a') && (ch
<= 'f'))
1298 *val
= ch
- 'a' + 10;
1301 if ((ch
>= 'A') && (ch
<= 'F'))
1303 *val
= ch
- 'A' + 10;
1306 if ((ch
>= '0') && (ch
<= '9'))
1317 if (ch
>= 'a' && ch
<= 'f')
1318 return ch
- 'a' + 10;
1319 if (ch
>= '0' && ch
<= '9')
1321 if (ch
>= 'A' && ch
<= 'F')
1322 return ch
- 'A' + 10;
1327 stub_unpack_int (char *buff
, int fieldlength
)
1334 nibble
= stubhex (*buff
++);
1338 retval
= retval
<< 4;
1344 unpack_varlen_hex (char *buff
, /* packet to parse */
1348 ULONGEST retval
= 0;
1350 while (ishex (*buff
, &nibble
))
1353 retval
= retval
<< 4;
1354 retval
|= nibble
& 0x0f;
1361 unpack_nibble (char *buf
, int *val
)
1363 *val
= fromhex (*buf
++);
1368 pack_nibble (char *buf
, int nibble
)
1370 *buf
++ = hexchars
[(nibble
& 0x0f)];
1375 pack_hex_byte (char *pkt
, int byte
)
1377 *pkt
++ = hexchars
[(byte
>> 4) & 0xf];
1378 *pkt
++ = hexchars
[(byte
& 0xf)];
1383 unpack_byte (char *buf
, int *value
)
1385 *value
= stub_unpack_int (buf
, 2);
1390 pack_int (char *buf
, int value
)
1392 buf
= pack_hex_byte (buf
, (value
>> 24) & 0xff);
1393 buf
= pack_hex_byte (buf
, (value
>> 16) & 0xff);
1394 buf
= pack_hex_byte (buf
, (value
>> 8) & 0x0ff);
1395 buf
= pack_hex_byte (buf
, (value
& 0xff));
1400 unpack_int (char *buf
, int *value
)
1402 *value
= stub_unpack_int (buf
, 8);
1406 #if 0 /* Currently unused, uncomment when needed. */
1407 static char *pack_string (char *pkt
, char *string
);
1410 pack_string (char *pkt
, char *string
)
1415 len
= strlen (string
);
1417 len
= 200; /* Bigger than most GDB packets, junk??? */
1418 pkt
= pack_hex_byte (pkt
, len
);
1422 if ((ch
== '\0') || (ch
== '#'))
1423 ch
= '*'; /* Protect encapsulation. */
1428 #endif /* 0 (unused) */
1431 unpack_string (char *src
, char *dest
, int length
)
1440 pack_threadid (char *pkt
, threadref
*id
)
1443 unsigned char *altid
;
1445 altid
= (unsigned char *) id
;
1446 limit
= pkt
+ BUF_THREAD_ID_SIZE
;
1448 pkt
= pack_hex_byte (pkt
, *altid
++);
1454 unpack_threadid (char *inbuf
, threadref
*id
)
1457 char *limit
= inbuf
+ BUF_THREAD_ID_SIZE
;
1460 altref
= (char *) id
;
1462 while (inbuf
< limit
)
1464 x
= stubhex (*inbuf
++);
1465 y
= stubhex (*inbuf
++);
1466 *altref
++ = (x
<< 4) | y
;
1471 /* Externally, threadrefs are 64 bits but internally, they are still
1472 ints. This is due to a mismatch of specifications. We would like
1473 to use 64bit thread references internally. This is an adapter
1477 int_to_threadref (threadref
*id
, int value
)
1479 unsigned char *scan
;
1481 scan
= (unsigned char *) id
;
1487 *scan
++ = (value
>> 24) & 0xff;
1488 *scan
++ = (value
>> 16) & 0xff;
1489 *scan
++ = (value
>> 8) & 0xff;
1490 *scan
++ = (value
& 0xff);
1494 threadref_to_int (threadref
*ref
)
1497 unsigned char *scan
;
1503 value
= (value
<< 8) | ((*scan
++) & 0xff);
1508 copy_threadref (threadref
*dest
, threadref
*src
)
1511 unsigned char *csrc
, *cdest
;
1513 csrc
= (unsigned char *) src
;
1514 cdest
= (unsigned char *) dest
;
1521 threadmatch (threadref
*dest
, threadref
*src
)
1523 /* Things are broken right now, so just assume we got a match. */
1525 unsigned char *srcp
, *destp
;
1527 srcp
= (char *) src
;
1528 destp
= (char *) dest
;
1532 result
&= (*srcp
++ == *destp
++) ? 1 : 0;
1539 threadid:1, # always request threadid
1546 /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */
1549 pack_threadinfo_request (char *pkt
, int mode
, threadref
*id
)
1551 *pkt
++ = 'q'; /* Info Query */
1552 *pkt
++ = 'P'; /* process or thread info */
1553 pkt
= pack_int (pkt
, mode
); /* mode */
1554 pkt
= pack_threadid (pkt
, id
); /* threadid */
1555 *pkt
= '\0'; /* terminate */
1559 /* These values tag the fields in a thread info response packet. */
1560 /* Tagging the fields allows us to request specific fields and to
1561 add more fields as time goes by. */
1563 #define TAG_THREADID 1 /* Echo the thread identifier. */
1564 #define TAG_EXISTS 2 /* Is this process defined enough to
1565 fetch registers and its stack? */
1566 #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */
1567 #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */
1568 #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about
1572 remote_unpack_thread_info_response (char *pkt
, threadref
*expectedref
,
1573 struct gdb_ext_thread_info
*info
)
1575 struct remote_state
*rs
= get_remote_state ();
1579 char *limit
= pkt
+ rs
->buf_size
; /* Plausible parsing limit. */
1582 /* info->threadid = 0; FIXME: implement zero_threadref. */
1584 info
->display
[0] = '\0';
1585 info
->shortname
[0] = '\0';
1586 info
->more_display
[0] = '\0';
1588 /* Assume the characters indicating the packet type have been
1590 pkt
= unpack_int (pkt
, &mask
); /* arg mask */
1591 pkt
= unpack_threadid (pkt
, &ref
);
1594 warning (_("Incomplete response to threadinfo request."));
1595 if (!threadmatch (&ref
, expectedref
))
1596 { /* This is an answer to a different request. */
1597 warning (_("ERROR RMT Thread info mismatch."));
1600 copy_threadref (&info
->threadid
, &ref
);
1602 /* Loop on tagged fields , try to bail if somthing goes wrong. */
1604 /* Packets are terminated with nulls. */
1605 while ((pkt
< limit
) && mask
&& *pkt
)
1607 pkt
= unpack_int (pkt
, &tag
); /* tag */
1608 pkt
= unpack_byte (pkt
, &length
); /* length */
1609 if (!(tag
& mask
)) /* Tags out of synch with mask. */
1611 warning (_("ERROR RMT: threadinfo tag mismatch."));
1615 if (tag
== TAG_THREADID
)
1619 warning (_("ERROR RMT: length of threadid is not 16."));
1623 pkt
= unpack_threadid (pkt
, &ref
);
1624 mask
= mask
& ~TAG_THREADID
;
1627 if (tag
== TAG_EXISTS
)
1629 info
->active
= stub_unpack_int (pkt
, length
);
1631 mask
= mask
& ~(TAG_EXISTS
);
1634 warning (_("ERROR RMT: 'exists' length too long."));
1640 if (tag
== TAG_THREADNAME
)
1642 pkt
= unpack_string (pkt
, &info
->shortname
[0], length
);
1643 mask
= mask
& ~TAG_THREADNAME
;
1646 if (tag
== TAG_DISPLAY
)
1648 pkt
= unpack_string (pkt
, &info
->display
[0], length
);
1649 mask
= mask
& ~TAG_DISPLAY
;
1652 if (tag
== TAG_MOREDISPLAY
)
1654 pkt
= unpack_string (pkt
, &info
->more_display
[0], length
);
1655 mask
= mask
& ~TAG_MOREDISPLAY
;
1658 warning (_("ERROR RMT: unknown thread info tag."));
1659 break; /* Not a tag we know about. */
1665 remote_get_threadinfo (threadref
*threadid
, int fieldset
, /* TAG mask */
1666 struct gdb_ext_thread_info
*info
)
1668 struct remote_state
*rs
= get_remote_state ();
1671 pack_threadinfo_request (rs
->buf
, fieldset
, threadid
);
1673 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1674 result
= remote_unpack_thread_info_response (rs
->buf
+ 2,
1679 /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */
1682 pack_threadlist_request (char *pkt
, int startflag
, int threadcount
,
1683 threadref
*nextthread
)
1685 *pkt
++ = 'q'; /* info query packet */
1686 *pkt
++ = 'L'; /* Process LIST or threadLIST request */
1687 pkt
= pack_nibble (pkt
, startflag
); /* initflag 1 bytes */
1688 pkt
= pack_hex_byte (pkt
, threadcount
); /* threadcount 2 bytes */
1689 pkt
= pack_threadid (pkt
, nextthread
); /* 64 bit thread identifier */
1694 /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */
1697 parse_threadlist_response (char *pkt
, int result_limit
,
1698 threadref
*original_echo
, threadref
*resultlist
,
1701 struct remote_state
*rs
= get_remote_state ();
1703 int count
, resultcount
, done
;
1706 /* Assume the 'q' and 'M chars have been stripped. */
1707 limit
= pkt
+ (rs
->buf_size
- BUF_THREAD_ID_SIZE
);
1708 /* done parse past here */
1709 pkt
= unpack_byte (pkt
, &count
); /* count field */
1710 pkt
= unpack_nibble (pkt
, &done
);
1711 /* The first threadid is the argument threadid. */
1712 pkt
= unpack_threadid (pkt
, original_echo
); /* should match query packet */
1713 while ((count
-- > 0) && (pkt
< limit
))
1715 pkt
= unpack_threadid (pkt
, resultlist
++);
1716 if (resultcount
++ >= result_limit
)
1725 remote_get_threadlist (int startflag
, threadref
*nextthread
, int result_limit
,
1726 int *done
, int *result_count
, threadref
*threadlist
)
1728 struct remote_state
*rs
= get_remote_state ();
1729 static threadref echo_nextthread
;
1732 /* Trancate result limit to be smaller than the packet size. */
1733 if ((((result_limit
+ 1) * BUF_THREAD_ID_SIZE
) + 10) >= get_remote_packet_size ())
1734 result_limit
= (get_remote_packet_size () / BUF_THREAD_ID_SIZE
) - 2;
1736 pack_threadlist_request (rs
->buf
, startflag
, result_limit
, nextthread
);
1738 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1740 if (*rs
->buf
== '\0')
1744 parse_threadlist_response (rs
->buf
+ 2, result_limit
, &echo_nextthread
,
1747 if (!threadmatch (&echo_nextthread
, nextthread
))
1749 /* FIXME: This is a good reason to drop the packet. */
1750 /* Possably, there is a duplicate response. */
1752 retransmit immediatly - race conditions
1753 retransmit after timeout - yes
1755 wait for packet, then exit
1757 warning (_("HMM: threadlist did not echo arg thread, dropping it."));
1758 return 0; /* I choose simply exiting. */
1760 if (*result_count
<= 0)
1764 warning (_("RMT ERROR : failed to get remote thread list."));
1767 return result
; /* break; */
1769 if (*result_count
> result_limit
)
1772 warning (_("RMT ERROR: threadlist response longer than requested."));
1778 /* This is the interface between remote and threads, remotes upper
1781 /* remote_find_new_threads retrieves the thread list and for each
1782 thread in the list, looks up the thread in GDB's internal list,
1783 ading the thread if it does not already exist. This involves
1784 getting partial thread lists from the remote target so, polling the
1785 quit_flag is required. */
1788 /* About this many threadisds fit in a packet. */
1790 #define MAXTHREADLISTRESULTS 32
1793 remote_threadlist_iterator (rmt_thread_action stepfunction
, void *context
,
1796 int done
, i
, result_count
;
1800 static threadref nextthread
;
1801 static threadref resultthreadlist
[MAXTHREADLISTRESULTS
];
1806 if (loopcount
++ > looplimit
)
1809 warning (_("Remote fetch threadlist -infinite loop-."));
1812 if (!remote_get_threadlist (startflag
, &nextthread
, MAXTHREADLISTRESULTS
,
1813 &done
, &result_count
, resultthreadlist
))
1818 /* Clear for later iterations. */
1820 /* Setup to resume next batch of thread references, set nextthread. */
1821 if (result_count
>= 1)
1822 copy_threadref (&nextthread
, &resultthreadlist
[result_count
- 1]);
1824 while (result_count
--)
1825 if (!(result
= (*stepfunction
) (&resultthreadlist
[i
++], context
)))
1832 remote_newthread_step (threadref
*ref
, void *context
)
1836 ptid
= pid_to_ptid (threadref_to_int (ref
));
1838 if (!in_thread_list (ptid
))
1840 return 1; /* continue iterator */
1843 #define CRAZY_MAX_THREADS 1000
1846 remote_current_thread (ptid_t oldpid
)
1848 struct remote_state
*rs
= get_remote_state ();
1851 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1852 if (rs
->buf
[0] == 'Q' && rs
->buf
[1] == 'C')
1853 /* Use strtoul here, so we'll correctly parse values whose highest
1854 bit is set. The protocol carries them as a simple series of
1855 hex digits; in the absence of a sign, strtol will see such
1856 values as positive numbers out of range for signed 'long', and
1857 return LONG_MAX to indicate an overflow. */
1858 return pid_to_ptid (strtoul (&rs
->buf
[2], NULL
, 16));
1863 /* Find new threads for info threads command.
1864 * Original version, using John Metzler's thread protocol.
1868 remote_find_new_threads (void)
1870 remote_threadlist_iterator (remote_newthread_step
, 0,
1872 if (PIDGET (inferior_ptid
) == MAGIC_NULL_PID
) /* ack ack ack */
1873 inferior_ptid
= remote_current_thread (inferior_ptid
);
1877 * Find all threads for info threads command.
1878 * Uses new thread protocol contributed by Cisco.
1879 * Falls back and attempts to use the older method (above)
1880 * if the target doesn't respond to the new method.
1884 remote_threads_info (void)
1886 struct remote_state
*rs
= get_remote_state ();
1890 if (remote_desc
== 0) /* paranoia */
1891 error (_("Command can only be used when connected to the remote target."));
1893 if (use_threadinfo_query
)
1895 putpkt ("qfThreadInfo");
1896 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1898 if (bufp
[0] != '\0') /* q packet recognized */
1900 while (*bufp
++ == 'm') /* reply contains one or more TID */
1904 /* Use strtoul here, so we'll correctly parse values
1905 whose highest bit is set. The protocol carries
1906 them as a simple series of hex digits; in the
1907 absence of a sign, strtol will see such values as
1908 positive numbers out of range for signed 'long',
1909 and return LONG_MAX to indicate an overflow. */
1910 tid
= strtoul (bufp
, &bufp
, 16);
1911 if (tid
!= 0 && !in_thread_list (pid_to_ptid (tid
)))
1912 add_thread (pid_to_ptid (tid
));
1914 while (*bufp
++ == ','); /* comma-separated list */
1915 putpkt ("qsThreadInfo");
1916 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1923 /* Else fall back to old method based on jmetzler protocol. */
1924 use_threadinfo_query
= 0;
1925 remote_find_new_threads ();
1930 * Collect a descriptive string about the given thread.
1931 * The target may say anything it wants to about the thread
1932 * (typically info about its blocked / runnable state, name, etc.).
1933 * This string will appear in the info threads display.
1935 * Optional: targets are not required to implement this function.
1939 remote_threads_extra_info (struct thread_info
*tp
)
1941 struct remote_state
*rs
= get_remote_state ();
1945 struct gdb_ext_thread_info threadinfo
;
1946 static char display_buf
[100]; /* arbitrary... */
1947 int n
= 0; /* position in display_buf */
1949 if (remote_desc
== 0) /* paranoia */
1950 internal_error (__FILE__
, __LINE__
,
1951 _("remote_threads_extra_info"));
1953 if (use_threadextra_query
)
1955 xsnprintf (rs
->buf
, get_remote_packet_size (), "qThreadExtraInfo,%x",
1958 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1959 if (rs
->buf
[0] != 0)
1961 n
= min (strlen (rs
->buf
) / 2, sizeof (display_buf
));
1962 result
= hex2bin (rs
->buf
, (gdb_byte
*) display_buf
, n
);
1963 display_buf
[result
] = '\0';
1968 /* If the above query fails, fall back to the old method. */
1969 use_threadextra_query
= 0;
1970 set
= TAG_THREADID
| TAG_EXISTS
| TAG_THREADNAME
1971 | TAG_MOREDISPLAY
| TAG_DISPLAY
;
1972 int_to_threadref (&id
, PIDGET (tp
->ptid
));
1973 if (remote_get_threadinfo (&id
, set
, &threadinfo
))
1974 if (threadinfo
.active
)
1976 if (*threadinfo
.shortname
)
1977 n
+= xsnprintf (&display_buf
[0], sizeof (display_buf
) - n
,
1978 " Name: %s,", threadinfo
.shortname
);
1979 if (*threadinfo
.display
)
1980 n
+= xsnprintf (&display_buf
[n
], sizeof (display_buf
) - n
,
1981 " State: %s,", threadinfo
.display
);
1982 if (*threadinfo
.more_display
)
1983 n
+= xsnprintf (&display_buf
[n
], sizeof (display_buf
) - n
,
1984 " Priority: %s", threadinfo
.more_display
);
1988 /* For purely cosmetic reasons, clear up trailing commas. */
1989 if (',' == display_buf
[n
-1])
1990 display_buf
[n
-1] = ' ';
1998 /* Restart the remote side; this is an extended protocol operation. */
2001 extended_remote_restart (void)
2003 struct remote_state
*rs
= get_remote_state ();
2005 /* Send the restart command; for reasons I don't understand the
2006 remote side really expects a number after the "R". */
2007 xsnprintf (rs
->buf
, get_remote_packet_size (), "R%x", 0);
2010 remote_fileio_reset ();
2013 /* Clean up connection to a remote debugger. */
2016 remote_close (int quitting
)
2019 serial_close (remote_desc
);
2023 /* Query the remote side for the text, data and bss offsets. */
2028 struct remote_state
*rs
= get_remote_state ();
2031 int lose
, num_segments
= 0, do_sections
, do_segments
;
2032 CORE_ADDR text_addr
, data_addr
, bss_addr
, segments
[2];
2033 struct section_offsets
*offs
;
2034 struct symfile_segment_data
*data
;
2036 if (symfile_objfile
== NULL
)
2039 putpkt ("qOffsets");
2040 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2043 if (buf
[0] == '\000')
2044 return; /* Return silently. Stub doesn't support
2048 warning (_("Remote failure reply: %s"), buf
);
2052 /* Pick up each field in turn. This used to be done with scanf, but
2053 scanf will make trouble if CORE_ADDR size doesn't match
2054 conversion directives correctly. The following code will work
2055 with any size of CORE_ADDR. */
2056 text_addr
= data_addr
= bss_addr
= 0;
2060 if (strncmp (ptr
, "Text=", 5) == 0)
2063 /* Don't use strtol, could lose on big values. */
2064 while (*ptr
&& *ptr
!= ';')
2065 text_addr
= (text_addr
<< 4) + fromhex (*ptr
++);
2067 if (strncmp (ptr
, ";Data=", 6) == 0)
2070 while (*ptr
&& *ptr
!= ';')
2071 data_addr
= (data_addr
<< 4) + fromhex (*ptr
++);
2076 if (!lose
&& strncmp (ptr
, ";Bss=", 5) == 0)
2079 while (*ptr
&& *ptr
!= ';')
2080 bss_addr
= (bss_addr
<< 4) + fromhex (*ptr
++);
2082 if (bss_addr
!= data_addr
)
2083 warning (_("Target reported unsupported offsets: %s"), buf
);
2088 else if (strncmp (ptr
, "TextSeg=", 8) == 0)
2091 /* Don't use strtol, could lose on big values. */
2092 while (*ptr
&& *ptr
!= ';')
2093 text_addr
= (text_addr
<< 4) + fromhex (*ptr
++);
2096 if (strncmp (ptr
, ";DataSeg=", 9) == 0)
2099 while (*ptr
&& *ptr
!= ';')
2100 data_addr
= (data_addr
<< 4) + fromhex (*ptr
++);
2108 error (_("Malformed response to offset query, %s"), buf
);
2109 else if (*ptr
!= '\0')
2110 warning (_("Target reported unsupported offsets: %s"), buf
);
2112 offs
= ((struct section_offsets
*)
2113 alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
)));
2114 memcpy (offs
, symfile_objfile
->section_offsets
,
2115 SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
));
2117 data
= get_symfile_segment_data (symfile_objfile
->obfd
);
2118 do_segments
= (data
!= NULL
);
2119 do_sections
= num_segments
== 0;
2121 if (num_segments
> 0)
2123 segments
[0] = text_addr
;
2124 segments
[1] = data_addr
;
2126 /* If we have two segments, we can still try to relocate everything
2127 by assuming that the .text and .data offsets apply to the whole
2128 text and data segments. Convert the offsets given in the packet
2129 to base addresses for symfile_map_offsets_to_segments. */
2130 else if (data
&& data
->num_segments
== 2)
2132 segments
[0] = data
->segment_bases
[0] + text_addr
;
2133 segments
[1] = data
->segment_bases
[1] + data_addr
;
2136 /* There's no way to relocate by segment. */
2142 int ret
= symfile_map_offsets_to_segments (symfile_objfile
->obfd
, data
,
2143 offs
, num_segments
, segments
);
2145 if (ret
== 0 && !do_sections
)
2146 error (_("Can not handle qOffsets TextSeg response with this symbol file"));
2153 free_symfile_segment_data (data
);
2157 offs
->offsets
[SECT_OFF_TEXT (symfile_objfile
)] = text_addr
;
2159 /* This is a temporary kludge to force data and bss to use the same offsets
2160 because that's what nlmconv does now. The real solution requires changes
2161 to the stub and remote.c that I don't have time to do right now. */
2163 offs
->offsets
[SECT_OFF_DATA (symfile_objfile
)] = data_addr
;
2164 offs
->offsets
[SECT_OFF_BSS (symfile_objfile
)] = data_addr
;
2167 objfile_relocate (symfile_objfile
, offs
);
2170 /* Stub for catch_exception. */
2172 struct start_remote_args
2176 /* The current target. */
2177 struct target_ops
*target
;
2179 /* Non-zero if this is an extended-remote target. */
2184 remote_start_remote (struct ui_out
*uiout
, void *opaque
)
2186 struct remote_state
*rs
= get_remote_state ();
2187 struct start_remote_args
*args
= opaque
;
2188 char *wait_status
= NULL
;
2190 immediate_quit
++; /* Allow user to interrupt it. */
2192 /* Ack any packet which the remote side has already sent. */
2193 serial_write (remote_desc
, "+", 1);
2195 /* Check whether the target is running now. */
2197 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2199 if (rs
->buf
[0] == 'W' || rs
->buf
[0] == 'X')
2201 if (args
->extended_p
)
2203 /* We're connected, but not running. Drop out before we
2204 call start_remote. */
2205 target_mark_exited (args
->target
);
2209 error (_("The target is not running (try extended-remote?)"));
2213 if (args
->extended_p
)
2214 target_mark_running (args
->target
);
2216 /* Save the reply for later. */
2217 wait_status
= alloca (strlen (rs
->buf
) + 1);
2218 strcpy (wait_status
, rs
->buf
);
2221 /* Let the stub know that we want it to return the thread. */
2224 /* Without this, some commands which require an active target
2225 (such as kill) won't work. This variable serves (at least)
2226 double duty as both the pid of the target process (if it has
2227 such), and as a flag indicating that a target is active.
2228 These functions should be split out into seperate variables,
2229 especially since GDB will someday have a notion of debugging
2230 several processes. */
2231 inferior_ptid
= pid_to_ptid (MAGIC_NULL_PID
);
2233 /* Now, if we have thread information, update inferior_ptid. */
2234 inferior_ptid
= remote_current_thread (inferior_ptid
);
2236 get_offsets (); /* Get text, data & bss offsets. */
2238 /* Use the previously fetched status. */
2239 gdb_assert (wait_status
!= NULL
);
2240 strcpy (rs
->buf
, wait_status
);
2241 rs
->cached_wait_status
= 1;
2244 start_remote (args
->from_tty
); /* Initialize gdb process mechanisms. */
2247 /* Open a connection to a remote debugger.
2248 NAME is the filename used for communication. */
2251 remote_open (char *name
, int from_tty
)
2253 remote_open_1 (name
, from_tty
, &remote_ops
, 0, 0);
2256 /* Just like remote_open, but with asynchronous support. */
2258 remote_async_open (char *name
, int from_tty
)
2260 remote_open_1 (name
, from_tty
, &remote_async_ops
, 0, 1);
2263 /* Open a connection to a remote debugger using the extended
2264 remote gdb protocol. NAME is the filename used for communication. */
2267 extended_remote_open (char *name
, int from_tty
)
2269 remote_open_1 (name
, from_tty
, &extended_remote_ops
, 1 /*extended_p */,
2273 /* Just like extended_remote_open, but with asynchronous support. */
2275 extended_remote_async_open (char *name
, int from_tty
)
2277 remote_open_1 (name
, from_tty
, &extended_async_remote_ops
,
2278 1 /*extended_p */, 1 /* async_p */);
2281 /* Generic code for opening a connection to a remote target. */
2284 init_all_packet_configs (void)
2287 for (i
= 0; i
< PACKET_MAX
; i
++)
2288 update_packet_config (&remote_protocol_packets
[i
]);
2291 /* Symbol look-up. */
2294 remote_check_symbols (struct objfile
*objfile
)
2296 struct remote_state
*rs
= get_remote_state ();
2297 char *msg
, *reply
, *tmp
;
2298 struct minimal_symbol
*sym
;
2301 if (remote_protocol_packets
[PACKET_qSymbol
].support
== PACKET_DISABLE
)
2304 /* Allocate a message buffer. We can't reuse the input buffer in RS,
2305 because we need both at the same time. */
2306 msg
= alloca (get_remote_packet_size ());
2308 /* Invite target to request symbol lookups. */
2310 putpkt ("qSymbol::");
2311 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2312 packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_qSymbol
]);
2315 while (strncmp (reply
, "qSymbol:", 8) == 0)
2318 end
= hex2bin (tmp
, (gdb_byte
*) msg
, strlen (tmp
) / 2);
2320 sym
= lookup_minimal_symbol (msg
, NULL
, NULL
);
2322 xsnprintf (msg
, get_remote_packet_size (), "qSymbol::%s", &reply
[8]);
2325 CORE_ADDR sym_addr
= SYMBOL_VALUE_ADDRESS (sym
);
2327 /* If this is a function address, return the start of code
2328 instead of any data function descriptor. */
2329 sym_addr
= gdbarch_convert_from_func_ptr_addr (current_gdbarch
,
2333 xsnprintf (msg
, get_remote_packet_size (), "qSymbol:%s:%s",
2334 paddr_nz (sym_addr
), &reply
[8]);
2338 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2343 static struct serial
*
2344 remote_serial_open (char *name
)
2346 static int udp_warning
= 0;
2348 /* FIXME: Parsing NAME here is a hack. But we want to warn here instead
2349 of in ser-tcp.c, because it is the remote protocol assuming that the
2350 serial connection is reliable and not the serial connection promising
2352 if (!udp_warning
&& strncmp (name
, "udp:", 4) == 0)
2355 The remote protocol may be unreliable over UDP.\n\
2356 Some events may be lost, rendering further debugging impossible."));
2360 return serial_open (name
);
2363 /* This type describes each known response to the qSupported
2365 struct protocol_feature
2367 /* The name of this protocol feature. */
2370 /* The default for this protocol feature. */
2371 enum packet_support default_support
;
2373 /* The function to call when this feature is reported, or after
2374 qSupported processing if the feature is not supported.
2375 The first argument points to this structure. The second
2376 argument indicates whether the packet requested support be
2377 enabled, disabled, or probed (or the default, if this function
2378 is being called at the end of processing and this feature was
2379 not reported). The third argument may be NULL; if not NULL, it
2380 is a NUL-terminated string taken from the packet following
2381 this feature's name and an equals sign. */
2382 void (*func
) (const struct protocol_feature
*, enum packet_support
,
2385 /* The corresponding packet for this feature. Only used if
2386 FUNC is remote_supported_packet. */
2391 remote_supported_packet (const struct protocol_feature
*feature
,
2392 enum packet_support support
,
2393 const char *argument
)
2397 warning (_("Remote qSupported response supplied an unexpected value for"
2398 " \"%s\"."), feature
->name
);
2402 if (remote_protocol_packets
[feature
->packet
].support
2403 == PACKET_SUPPORT_UNKNOWN
)
2404 remote_protocol_packets
[feature
->packet
].support
= support
;
2408 remote_packet_size (const struct protocol_feature
*feature
,
2409 enum packet_support support
, const char *value
)
2411 struct remote_state
*rs
= get_remote_state ();
2416 if (support
!= PACKET_ENABLE
)
2419 if (value
== NULL
|| *value
== '\0')
2421 warning (_("Remote target reported \"%s\" without a size."),
2427 packet_size
= strtol (value
, &value_end
, 16);
2428 if (errno
!= 0 || *value_end
!= '\0' || packet_size
< 0)
2430 warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."),
2431 feature
->name
, value
);
2435 if (packet_size
> MAX_REMOTE_PACKET_SIZE
)
2437 warning (_("limiting remote suggested packet size (%d bytes) to %d"),
2438 packet_size
, MAX_REMOTE_PACKET_SIZE
);
2439 packet_size
= MAX_REMOTE_PACKET_SIZE
;
2442 /* Record the new maximum packet size. */
2443 rs
->explicit_packet_size
= packet_size
;
2446 static struct protocol_feature remote_protocol_features
[] = {
2447 { "PacketSize", PACKET_DISABLE
, remote_packet_size
, -1 },
2448 { "qXfer:auxv:read", PACKET_DISABLE
, remote_supported_packet
,
2449 PACKET_qXfer_auxv
},
2450 { "qXfer:features:read", PACKET_DISABLE
, remote_supported_packet
,
2451 PACKET_qXfer_features
},
2452 { "qXfer:libraries:read", PACKET_DISABLE
, remote_supported_packet
,
2453 PACKET_qXfer_libraries
},
2454 { "qXfer:memory-map:read", PACKET_DISABLE
, remote_supported_packet
,
2455 PACKET_qXfer_memory_map
},
2456 { "qXfer:spu:read", PACKET_DISABLE
, remote_supported_packet
,
2457 PACKET_qXfer_spu_read
},
2458 { "qXfer:spu:write", PACKET_DISABLE
, remote_supported_packet
,
2459 PACKET_qXfer_spu_write
},
2460 { "QPassSignals", PACKET_DISABLE
, remote_supported_packet
,
2461 PACKET_QPassSignals
},
2465 remote_query_supported (void)
2467 struct remote_state
*rs
= get_remote_state ();
2470 unsigned char seen
[ARRAY_SIZE (remote_protocol_features
)];
2472 /* The packet support flags are handled differently for this packet
2473 than for most others. We treat an error, a disabled packet, and
2474 an empty response identically: any features which must be reported
2475 to be used will be automatically disabled. An empty buffer
2476 accomplishes this, since that is also the representation for a list
2477 containing no features. */
2480 if (remote_protocol_packets
[PACKET_qSupported
].support
!= PACKET_DISABLE
)
2482 putpkt ("qSupported");
2483 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2485 /* If an error occured, warn, but do not return - just reset the
2486 buffer to empty and go on to disable features. */
2487 if (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_qSupported
])
2490 warning (_("Remote failure reply: %s"), rs
->buf
);
2495 memset (seen
, 0, sizeof (seen
));
2500 enum packet_support is_supported
;
2501 char *p
, *end
, *name_end
, *value
;
2503 /* First separate out this item from the rest of the packet. If
2504 there's another item after this, we overwrite the separator
2505 (terminated strings are much easier to work with). */
2507 end
= strchr (p
, ';');
2510 end
= p
+ strlen (p
);
2520 warning (_("empty item in \"qSupported\" response"));
2525 name_end
= strchr (p
, '=');
2528 /* This is a name=value entry. */
2529 is_supported
= PACKET_ENABLE
;
2530 value
= name_end
+ 1;
2539 is_supported
= PACKET_ENABLE
;
2543 is_supported
= PACKET_DISABLE
;
2547 is_supported
= PACKET_SUPPORT_UNKNOWN
;
2551 warning (_("unrecognized item \"%s\" in \"qSupported\" response"), p
);
2557 for (i
= 0; i
< ARRAY_SIZE (remote_protocol_features
); i
++)
2558 if (strcmp (remote_protocol_features
[i
].name
, p
) == 0)
2560 const struct protocol_feature
*feature
;
2563 feature
= &remote_protocol_features
[i
];
2564 feature
->func (feature
, is_supported
, value
);
2569 /* If we increased the packet size, make sure to increase the global
2570 buffer size also. We delay this until after parsing the entire
2571 qSupported packet, because this is the same buffer we were
2573 if (rs
->buf_size
< rs
->explicit_packet_size
)
2575 rs
->buf_size
= rs
->explicit_packet_size
;
2576 rs
->buf
= xrealloc (rs
->buf
, rs
->buf_size
);
2579 /* Handle the defaults for unmentioned features. */
2580 for (i
= 0; i
< ARRAY_SIZE (remote_protocol_features
); i
++)
2583 const struct protocol_feature
*feature
;
2585 feature
= &remote_protocol_features
[i
];
2586 feature
->func (feature
, feature
->default_support
, NULL
);
2592 remote_open_1 (char *name
, int from_tty
, struct target_ops
*target
,
2593 int extended_p
, int async_p
)
2595 struct remote_state
*rs
= get_remote_state ();
2597 error (_("To open a remote debug connection, you need to specify what\n"
2598 "serial device is attached to the remote system\n"
2599 "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."));
2601 /* See FIXME above. */
2603 wait_forever_enabled_p
= 1;
2605 /* If we're connected to a running target, target_preopen will kill it.
2606 But if we're connected to a target system with no running process,
2607 then we will still be connected when it returns. Ask this question
2608 first, before target_preopen has a chance to kill anything. */
2609 if (remote_desc
!= NULL
&& !target_has_execution
)
2612 || query (_("Already connected to a remote target. Disconnect? ")))
2615 error (_("Still connected."));
2618 target_preopen (from_tty
);
2620 unpush_target (target
);
2622 /* This time without a query. If we were connected to an
2623 extended-remote target and target_preopen killed the running
2624 process, we may still be connected. If we are starting "target
2625 remote" now, the extended-remote target will not have been
2626 removed by unpush_target. */
2627 if (remote_desc
!= NULL
&& !target_has_execution
)
2630 /* Make sure we send the passed signals list the next time we resume. */
2631 xfree (last_pass_packet
);
2632 last_pass_packet
= NULL
;
2634 remote_fileio_reset ();
2635 reopen_exec_file ();
2638 remote_desc
= remote_serial_open (name
);
2640 perror_with_name (name
);
2642 if (baud_rate
!= -1)
2644 if (serial_setbaudrate (remote_desc
, baud_rate
))
2646 /* The requested speed could not be set. Error out to
2647 top level after closing remote_desc. Take care to
2648 set remote_desc to NULL to avoid closing remote_desc
2650 serial_close (remote_desc
);
2652 perror_with_name (name
);
2656 serial_raw (remote_desc
);
2658 /* If there is something sitting in the buffer we might take it as a
2659 response to a command, which would be bad. */
2660 serial_flush_input (remote_desc
);
2664 puts_filtered ("Remote debugging using ");
2665 puts_filtered (name
);
2666 puts_filtered ("\n");
2668 push_target (target
); /* Switch to using remote target now. */
2670 /* Assume that the target is running, unless we learn otherwise. */
2671 target_mark_running (target
);
2673 /* Reset the target state; these things will be queried either by
2674 remote_query_supported or as they are needed. */
2675 init_all_packet_configs ();
2676 rs
->explicit_packet_size
= 0;
2678 general_thread
= -2;
2679 continue_thread
= -2;
2681 /* Probe for ability to use "ThreadInfo" query, as required. */
2682 use_threadinfo_query
= 1;
2683 use_threadextra_query
= 1;
2685 /* The first packet we send to the target is the optional "supported
2686 packets" request. If the target can answer this, it will tell us
2687 which later probes to skip. */
2688 remote_query_supported ();
2690 /* Next, if the target can specify a description, read it. We do
2691 this before anything involving memory or registers. */
2692 target_find_description ();
2696 /* With this target we start out by owning the terminal. */
2697 remote_async_terminal_ours_p
= 1;
2699 /* FIXME: cagney/1999-09-23: During the initial connection it is
2700 assumed that the target is already ready and able to respond to
2701 requests. Unfortunately remote_start_remote() eventually calls
2702 wait_for_inferior() with no timeout. wait_forever_enabled_p gets
2703 around this. Eventually a mechanism that allows
2704 wait_for_inferior() to expect/get timeouts will be
2706 wait_forever_enabled_p
= 0;
2709 /* First delete any symbols previously loaded from shared libraries. */
2710 no_shared_libraries (NULL
, 0);
2712 /* Start the remote connection. If error() or QUIT, discard this
2713 target (we'd otherwise be in an inconsistent state) and then
2714 propogate the error on up the exception chain. This ensures that
2715 the caller doesn't stumble along blindly assuming that the
2716 function succeeded. The CLI doesn't have this problem but other
2717 UI's, such as MI do.
2719 FIXME: cagney/2002-05-19: Instead of re-throwing the exception,
2720 this function should return an error indication letting the
2721 caller restore the previous state. Unfortunately the command
2722 ``target remote'' is directly wired to this function making that
2723 impossible. On a positive note, the CLI side of this problem has
2724 been fixed - the function set_cmd_context() makes it possible for
2725 all the ``target ....'' commands to share a common callback
2726 function. See cli-dump.c. */
2728 struct gdb_exception ex
;
2729 struct start_remote_args args
;
2731 args
.from_tty
= from_tty
;
2732 args
.target
= target
;
2733 args
.extended_p
= extended_p
;
2735 ex
= catch_exception (uiout
, remote_start_remote
, &args
, RETURN_MASK_ALL
);
2740 wait_forever_enabled_p
= 1;
2741 throw_exception (ex
);
2746 wait_forever_enabled_p
= 1;
2750 /* Tell the remote that we are using the extended protocol. */
2752 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2755 /* If we connected to a live target, do some additional setup. */
2756 if (target_has_execution
)
2758 if (exec_bfd
) /* No use without an exec file. */
2759 remote_check_symbols (symfile_objfile
);
2763 /* This takes a program previously attached to and detaches it. After
2764 this is done, GDB can be used to debug some other program. We
2765 better not have left any breakpoints in the target program or it'll
2766 die when it hits one. */
2769 remote_detach_1 (char *args
, int from_tty
, int extended
)
2771 struct remote_state
*rs
= get_remote_state ();
2774 error (_("Argument given to \"detach\" when remotely debugging."));
2776 if (!target_has_execution
)
2777 error (_("No process to detach from."));
2779 /* Tell the remote target to detach. */
2780 strcpy (rs
->buf
, "D");
2782 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2784 if (rs
->buf
[0] == 'E')
2785 error (_("Can't detach process."));
2787 /* Unregister the file descriptor from the event loop. */
2788 if (target_is_async_p ())
2789 serial_async (remote_desc
, NULL
, 0);
2791 target_mourn_inferior ();
2795 puts_filtered ("Detached from remote process.\n");
2797 puts_filtered ("Ending remote debugging.\n");
2802 remote_detach (char *args
, int from_tty
)
2804 remote_detach_1 (args
, from_tty
, 0);
2808 extended_remote_detach (char *args
, int from_tty
)
2810 remote_detach_1 (args
, from_tty
, 1);
2813 /* Same as remote_detach, but don't send the "D" packet; just disconnect. */
2816 remote_disconnect (struct target_ops
*target
, char *args
, int from_tty
)
2819 error (_("Argument given to \"disconnect\" when remotely debugging."));
2821 /* Unregister the file descriptor from the event loop. */
2822 if (target_is_async_p ())
2823 serial_async (remote_desc
, NULL
, 0);
2825 /* Make sure we unpush even the extended remote targets; mourn
2826 won't do it. So call remote_mourn_1 directly instead of
2827 target_mourn_inferior. */
2828 remote_mourn_1 (target
);
2831 puts_filtered ("Ending remote debugging.\n");
2834 /* Attach to the process specified by ARGS. If FROM_TTY is non-zero,
2835 be chatty about it. */
2838 extended_remote_attach_1 (struct target_ops
*target
, char *args
, int from_tty
)
2840 struct remote_state
*rs
= get_remote_state ();
2845 error_no_arg (_("process-id to attach"));
2848 pid
= strtol (args
, &dummy
, 0);
2849 /* Some targets don't set errno on errors, grrr! */
2850 if (pid
== 0 && args
== dummy
)
2851 error (_("Illegal process-id: %s."), args
);
2853 if (remote_protocol_packets
[PACKET_vAttach
].support
== PACKET_DISABLE
)
2854 error (_("This target does not support attaching to a process"));
2856 sprintf (rs
->buf
, "vAttach;%x", pid
);
2858 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2860 if (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_vAttach
]) == PACKET_OK
)
2863 printf_unfiltered (_("Attached to %s\n"),
2864 target_pid_to_str (pid_to_ptid (pid
)));
2866 /* We have a wait response; reuse it. */
2867 rs
->cached_wait_status
= 1;
2869 else if (remote_protocol_packets
[PACKET_vAttach
].support
== PACKET_DISABLE
)
2870 error (_("This target does not support attaching to a process"));
2872 error (_("Attaching to %s failed"),
2873 target_pid_to_str (pid_to_ptid (pid
)));
2875 target_mark_running (target
);
2876 inferior_ptid
= pid_to_ptid (pid
);
2881 extended_remote_attach (char *args
, int from_tty
)
2883 extended_remote_attach_1 (&extended_remote_ops
, args
, from_tty
);
2887 extended_async_remote_attach (char *args
, int from_tty
)
2889 extended_remote_attach_1 (&extended_async_remote_ops
, args
, from_tty
);
2892 /* Convert hex digit A to a number. */
2897 if (a
>= '0' && a
<= '9')
2899 else if (a
>= 'a' && a
<= 'f')
2900 return a
- 'a' + 10;
2901 else if (a
>= 'A' && a
<= 'F')
2902 return a
- 'A' + 10;
2904 error (_("Reply contains invalid hex digit %d"), a
);
2908 hex2bin (const char *hex
, gdb_byte
*bin
, int count
)
2912 for (i
= 0; i
< count
; i
++)
2914 if (hex
[0] == 0 || hex
[1] == 0)
2916 /* Hex string is short, or of uneven length.
2917 Return the count that has been converted so far. */
2920 *bin
++ = fromhex (hex
[0]) * 16 + fromhex (hex
[1]);
2926 /* Convert number NIB to a hex digit. */
2934 return 'a' + nib
- 10;
2938 bin2hex (const gdb_byte
*bin
, char *hex
, int count
)
2941 /* May use a length, or a nul-terminated string as input. */
2943 count
= strlen ((char *) bin
);
2945 for (i
= 0; i
< count
; i
++)
2947 *hex
++ = tohex ((*bin
>> 4) & 0xf);
2948 *hex
++ = tohex (*bin
++ & 0xf);
2954 /* Check for the availability of vCont. This function should also check
2958 remote_vcont_probe (struct remote_state
*rs
)
2962 strcpy (rs
->buf
, "vCont?");
2964 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2967 /* Make sure that the features we assume are supported. */
2968 if (strncmp (buf
, "vCont", 5) == 0)
2971 int support_s
, support_S
, support_c
, support_C
;
2977 while (p
&& *p
== ';')
2980 if (*p
== 's' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
2982 else if (*p
== 'S' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
2984 else if (*p
== 'c' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
2986 else if (*p
== 'C' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
2989 p
= strchr (p
, ';');
2992 /* If s, S, c, and C are not all supported, we can't use vCont. Clearing
2993 BUF will make packet_ok disable the packet. */
2994 if (!support_s
|| !support_S
|| !support_c
|| !support_C
)
2998 packet_ok (buf
, &remote_protocol_packets
[PACKET_vCont
]);
3001 /* Resume the remote inferior by using a "vCont" packet. The thread
3002 to be resumed is PTID; STEP and SIGGNAL indicate whether the
3003 resumed thread should be single-stepped and/or signalled. If PTID's
3004 PID is -1, then all threads are resumed; the thread to be stepped and/or
3005 signalled is given in the global INFERIOR_PTID. This function returns
3006 non-zero iff it resumes the inferior.
3008 This function issues a strict subset of all possible vCont commands at the
3012 remote_vcont_resume (ptid_t ptid
, int step
, enum target_signal siggnal
)
3014 struct remote_state
*rs
= get_remote_state ();
3015 int pid
= PIDGET (ptid
);
3017 struct cleanup
*old_cleanup
;
3019 if (remote_protocol_packets
[PACKET_vCont
].support
== PACKET_SUPPORT_UNKNOWN
)
3020 remote_vcont_probe (rs
);
3022 if (remote_protocol_packets
[PACKET_vCont
].support
== PACKET_DISABLE
)
3025 /* If we could generate a wider range of packets, we'd have to worry
3026 about overflowing BUF. Should there be a generic
3027 "multi-part-packet" packet? */
3029 if (PIDGET (inferior_ptid
) == MAGIC_NULL_PID
)
3031 /* MAGIC_NULL_PTID means that we don't have any active threads, so we
3032 don't have any PID numbers the inferior will understand. Make sure
3033 to only send forms that do not specify a PID. */
3034 if (step
&& siggnal
!= TARGET_SIGNAL_0
)
3035 outbuf
= xstrprintf ("vCont;S%02x", siggnal
);
3037 outbuf
= xstrprintf ("vCont;s");
3038 else if (siggnal
!= TARGET_SIGNAL_0
)
3039 outbuf
= xstrprintf ("vCont;C%02x", siggnal
);
3041 outbuf
= xstrprintf ("vCont;c");
3045 /* Resume all threads, with preference for INFERIOR_PTID. */
3046 if (step
&& siggnal
!= TARGET_SIGNAL_0
)
3047 outbuf
= xstrprintf ("vCont;S%02x:%x;c", siggnal
,
3048 PIDGET (inferior_ptid
));
3050 outbuf
= xstrprintf ("vCont;s:%x;c", PIDGET (inferior_ptid
));
3051 else if (siggnal
!= TARGET_SIGNAL_0
)
3052 outbuf
= xstrprintf ("vCont;C%02x:%x;c", siggnal
,
3053 PIDGET (inferior_ptid
));
3055 outbuf
= xstrprintf ("vCont;c");
3059 /* Scheduler locking; resume only PTID. */
3060 if (step
&& siggnal
!= TARGET_SIGNAL_0
)
3061 outbuf
= xstrprintf ("vCont;S%02x:%x", siggnal
, pid
);
3063 outbuf
= xstrprintf ("vCont;s:%x", pid
);
3064 else if (siggnal
!= TARGET_SIGNAL_0
)
3065 outbuf
= xstrprintf ("vCont;C%02x:%x", siggnal
, pid
);
3067 outbuf
= xstrprintf ("vCont;c:%x", pid
);
3070 gdb_assert (outbuf
&& strlen (outbuf
) < get_remote_packet_size ());
3071 old_cleanup
= make_cleanup (xfree
, outbuf
);
3075 do_cleanups (old_cleanup
);
3080 /* Tell the remote machine to resume. */
3082 static enum target_signal last_sent_signal
= TARGET_SIGNAL_0
;
3084 static int last_sent_step
;
3087 remote_resume (ptid_t ptid
, int step
, enum target_signal siggnal
)
3089 struct remote_state
*rs
= get_remote_state ();
3091 int pid
= PIDGET (ptid
);
3093 last_sent_signal
= siggnal
;
3094 last_sent_step
= step
;
3096 /* Update the inferior on signals to silently pass, if they've changed. */
3097 remote_pass_signals ();
3099 /* The vCont packet doesn't need to specify threads via Hc. */
3100 if (remote_vcont_resume (ptid
, step
, siggnal
))
3103 /* All other supported resume packets do use Hc, so call set_thread. */
3105 set_thread (0, 0); /* Run any thread. */
3107 set_thread (pid
, 0); /* Run this thread. */
3110 if (siggnal
!= TARGET_SIGNAL_0
)
3112 buf
[0] = step
? 'S' : 'C';
3113 buf
[1] = tohex (((int) siggnal
>> 4) & 0xf);
3114 buf
[2] = tohex (((int) siggnal
) & 0xf);
3118 strcpy (buf
, step
? "s" : "c");
3123 /* Same as remote_resume, but with async support. */
3125 remote_async_resume (ptid_t ptid
, int step
, enum target_signal siggnal
)
3127 remote_resume (ptid
, step
, siggnal
);
3129 /* We are about to start executing the inferior, let's register it
3130 with the event loop. NOTE: this is the one place where all the
3131 execution commands end up. We could alternatively do this in each
3132 of the execution commands in infcmd.c. */
3133 /* FIXME: ezannoni 1999-09-28: We may need to move this out of here
3134 into infcmd.c in order to allow inferior function calls to work
3135 NOT asynchronously. */
3136 if (target_can_async_p ())
3137 target_async (inferior_event_handler
, 0);
3138 /* Tell the world that the target is now executing. */
3139 /* FIXME: cagney/1999-09-23: Is it the targets responsibility to set
3140 this? Instead, should the client of target just assume (for
3141 async targets) that the target is going to start executing? Is
3142 this information already found in the continuation block? */
3143 if (target_is_async_p ())
3144 target_executing
= 1;
3148 /* Set up the signal handler for SIGINT, while the target is
3149 executing, ovewriting the 'regular' SIGINT signal handler. */
3151 initialize_sigint_signal_handler (void)
3153 signal (SIGINT
, handle_remote_sigint
);
3156 /* Signal handler for SIGINT, while the target is executing. */
3158 handle_remote_sigint (int sig
)
3160 signal (sig
, handle_remote_sigint_twice
);
3161 mark_async_signal_handler_wrapper (sigint_remote_token
);
3164 /* Signal handler for SIGINT, installed after SIGINT has already been
3165 sent once. It will take effect the second time that the user sends
3168 handle_remote_sigint_twice (int sig
)
3170 signal (sig
, handle_remote_sigint
);
3171 mark_async_signal_handler_wrapper (sigint_remote_twice_token
);
3174 /* Perform the real interruption of the target execution, in response
3177 async_remote_interrupt (gdb_client_data arg
)
3180 fprintf_unfiltered (gdb_stdlog
, "remote_interrupt called\n");
3185 /* Perform interrupt, if the first attempt did not succeed. Just give
3186 up on the target alltogether. */
3188 async_remote_interrupt_twice (gdb_client_data arg
)
3191 fprintf_unfiltered (gdb_stdlog
, "remote_interrupt_twice called\n");
3196 /* Reinstall the usual SIGINT handlers, after the target has
3199 cleanup_sigint_signal_handler (void *dummy
)
3201 signal (SIGINT
, handle_sigint
);
3204 /* Send ^C to target to halt it. Target will respond, and send us a
3206 static void (*ofunc
) (int);
3208 /* The command line interface's stop routine. This function is installed
3209 as a signal handler for SIGINT. The first time a user requests a
3210 stop, we call remote_stop to send a break or ^C. If there is no
3211 response from the target (it didn't stop when the user requested it),
3212 we ask the user if he'd like to detach from the target. */
3214 remote_interrupt (int signo
)
3216 /* If this doesn't work, try more severe steps. */
3217 signal (signo
, remote_interrupt_twice
);
3219 gdb_call_async_signal_handler (sigint_remote_token
, 1);
3222 /* The user typed ^C twice. */
3225 remote_interrupt_twice (int signo
)
3227 signal (signo
, ofunc
);
3228 gdb_call_async_signal_handler (sigint_remote_twice_token
, 1);
3229 signal (signo
, remote_interrupt
);
3232 /* This is the generic stop called via the target vector. When a target
3233 interrupt is requested, either by the command line or the GUI, we
3234 will eventually end up here. */
3238 /* Send a break or a ^C, depending on user preference. */
3240 fprintf_unfiltered (gdb_stdlog
, "remote_stop called\n");
3243 serial_send_break (remote_desc
);
3245 serial_write (remote_desc
, "\003", 1);
3248 /* Ask the user what to do when an interrupt is received. */
3251 interrupt_query (void)
3253 target_terminal_ours ();
3255 if (query ("Interrupted while waiting for the program.\n\
3256 Give up (and stop debugging it)? "))
3258 target_mourn_inferior ();
3259 signal (SIGINT
, handle_sigint
);
3260 deprecated_throw_reason (RETURN_QUIT
);
3263 target_terminal_inferior ();
3266 /* Enable/disable target terminal ownership. Most targets can use
3267 terminal groups to control terminal ownership. Remote targets are
3268 different in that explicit transfer of ownership to/from GDB/target
3272 remote_async_terminal_inferior (void)
3274 /* FIXME: cagney/1999-09-27: Shouldn't need to test for
3275 sync_execution here. This function should only be called when
3276 GDB is resuming the inferior in the forground. A background
3277 resume (``run&'') should leave GDB in control of the terminal and
3278 consequently should not call this code. */
3279 if (!sync_execution
)
3281 /* FIXME: cagney/1999-09-27: Closely related to the above. Make
3282 calls target_terminal_*() idenpotent. The event-loop GDB talking
3283 to an asynchronous target with a synchronous command calls this
3284 function from both event-top.c and infrun.c/infcmd.c. Once GDB
3285 stops trying to transfer the terminal to the target when it
3286 shouldn't this guard can go away. */
3287 if (!remote_async_terminal_ours_p
)
3289 delete_file_handler (input_fd
);
3290 remote_async_terminal_ours_p
= 0;
3291 initialize_sigint_signal_handler ();
3292 /* NOTE: At this point we could also register our selves as the
3293 recipient of all input. Any characters typed could then be
3294 passed on down to the target. */
3298 remote_async_terminal_ours (void)
3300 /* See FIXME in remote_async_terminal_inferior. */
3301 if (!sync_execution
)
3303 /* See FIXME in remote_async_terminal_inferior. */
3304 if (remote_async_terminal_ours_p
)
3306 cleanup_sigint_signal_handler (NULL
);
3307 add_file_handler (input_fd
, stdin_event_handler
, 0);
3308 remote_async_terminal_ours_p
= 1;
3311 /* If nonzero, ignore the next kill. */
3316 remote_console_output (char *msg
)
3320 for (p
= msg
; p
[0] && p
[1]; p
+= 2)
3323 char c
= fromhex (p
[0]) * 16 + fromhex (p
[1]);
3326 fputs_unfiltered (tb
, gdb_stdtarg
);
3328 gdb_flush (gdb_stdtarg
);
3331 /* Wait until the remote machine stops, then return,
3332 storing status in STATUS just as `wait' would.
3333 Returns "pid", which in the case of a multi-threaded
3334 remote OS, is the thread-id. */
3337 remote_wait (ptid_t ptid
, struct target_waitstatus
*status
)
3339 struct remote_state
*rs
= get_remote_state ();
3340 struct remote_arch_state
*rsa
= get_remote_arch_state ();
3341 ULONGEST thread_num
= -1;
3343 int solibs_changed
= 0;
3345 status
->kind
= TARGET_WAITKIND_EXITED
;
3346 status
->value
.integer
= 0;
3352 if (rs
->cached_wait_status
)
3353 /* Use the cached wait status, but only once. */
3354 rs
->cached_wait_status
= 0;
3357 ofunc
= signal (SIGINT
, remote_interrupt
);
3358 /* If the user hit C-c before this packet, or between packets,
3359 pretend that it was hit right here. */
3363 remote_interrupt (SIGINT
);
3365 getpkt (&rs
->buf
, &rs
->buf_size
, 1);
3366 signal (SIGINT
, ofunc
);
3371 remote_stopped_by_watchpoint_p
= 0;
3375 case 'E': /* Error of some sort. */
3376 /* We're out of sync with the target now. Did it continue or not?
3377 Not is more likely, so report a stop. */
3378 warning (_("Remote failure reply: %s"), buf
);
3379 status
->kind
= TARGET_WAITKIND_STOPPED
;
3380 status
->value
.sig
= TARGET_SIGNAL_0
;
3382 case 'F': /* File-I/O request. */
3383 remote_fileio_request (buf
);
3385 case 'T': /* Status with PC, SP, FP, ... */
3387 gdb_byte regs
[MAX_REGISTER_SIZE
];
3389 /* Expedited reply, containing Signal, {regno, reg} repeat. */
3390 /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where
3392 n... = register number
3393 r... = register contents
3395 p
= &buf
[3]; /* after Txx */
3404 /* If the packet contains a register number save it in
3405 pnum and set p1 to point to the character following
3406 it. Otherwise p1 points to p. */
3408 /* If this packet is an awatch packet, don't parse the
3409 'a' as a register number. */
3411 if (strncmp (p
, "awatch", strlen("awatch")) != 0)
3413 /* Read the ``P'' register number. */
3414 pnum
= strtol (p
, &p_temp
, 16);
3420 if (p1
== p
) /* No register number present here. */
3422 p1
= strchr (p
, ':');
3424 error (_("Malformed packet(a) (missing colon): %s\n\
3427 if (strncmp (p
, "thread", p1
- p
) == 0)
3429 p_temp
= unpack_varlen_hex (++p1
, &thread_num
);
3430 record_currthread (thread_num
);
3433 else if ((strncmp (p
, "watch", p1
- p
) == 0)
3434 || (strncmp (p
, "rwatch", p1
- p
) == 0)
3435 || (strncmp (p
, "awatch", p1
- p
) == 0))
3437 remote_stopped_by_watchpoint_p
= 1;
3438 p
= unpack_varlen_hex (++p1
, &addr
);
3439 remote_watch_data_address
= (CORE_ADDR
)addr
;
3441 else if (strncmp (p
, "library", p1
- p
) == 0)
3445 while (*p_temp
&& *p_temp
!= ';')
3453 /* Silently skip unknown optional info. */
3454 p_temp
= strchr (p1
+ 1, ';');
3461 struct packet_reg
*reg
= packet_reg_from_pnum (rsa
, pnum
);
3465 error (_("Malformed packet(b) (missing colon): %s\n\
3470 error (_("Remote sent bad register number %s: %s\n\
3472 phex_nz (pnum
, 0), p
, buf
);
3474 fieldsize
= hex2bin (p
, regs
,
3475 register_size (current_gdbarch
,
3478 if (fieldsize
< register_size (current_gdbarch
,
3480 warning (_("Remote reply is too short: %s"), buf
);
3481 regcache_raw_supply (get_current_regcache (),
3486 error (_("Remote register badly formatted: %s\nhere: %s"),
3491 case 'S': /* Old style status, just signal only. */
3493 status
->kind
= TARGET_WAITKIND_LOADED
;
3496 status
->kind
= TARGET_WAITKIND_STOPPED
;
3497 status
->value
.sig
= (enum target_signal
)
3498 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
3503 thread_num
= strtol ((const char *) &buf
[4], NULL
, 16);
3504 record_currthread (thread_num
);
3507 case 'W': /* Target exited. */
3509 /* The remote process exited. */
3510 status
->kind
= TARGET_WAITKIND_EXITED
;
3511 status
->value
.integer
= (fromhex (buf
[1]) << 4) + fromhex (buf
[2]);
3515 status
->kind
= TARGET_WAITKIND_SIGNALLED
;
3516 status
->value
.sig
= (enum target_signal
)
3517 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
3521 case 'O': /* Console output. */
3522 remote_console_output (buf
+ 1);
3525 if (last_sent_signal
!= TARGET_SIGNAL_0
)
3527 /* Zero length reply means that we tried 'S' or 'C' and
3528 the remote system doesn't support it. */
3529 target_terminal_ours_for_output ();
3531 ("Can't send signals to this remote system. %s not sent.\n",
3532 target_signal_to_name (last_sent_signal
));
3533 last_sent_signal
= TARGET_SIGNAL_0
;
3534 target_terminal_inferior ();
3536 strcpy ((char *) buf
, last_sent_step
? "s" : "c");
3537 putpkt ((char *) buf
);
3540 /* else fallthrough */
3542 warning (_("Invalid remote reply: %s"), buf
);
3547 if (thread_num
!= -1)
3549 return pid_to_ptid (thread_num
);
3551 return inferior_ptid
;
3554 /* Async version of remote_wait. */
3556 remote_async_wait (ptid_t ptid
, struct target_waitstatus
*status
)
3558 struct remote_state
*rs
= get_remote_state ();
3559 struct remote_arch_state
*rsa
= get_remote_arch_state ();
3560 ULONGEST thread_num
= -1;
3562 int solibs_changed
= 0;
3564 status
->kind
= TARGET_WAITKIND_EXITED
;
3565 status
->value
.integer
= 0;
3567 remote_stopped_by_watchpoint_p
= 0;
3573 if (rs
->cached_wait_status
)
3574 /* Use the cached wait status, but only once. */
3575 rs
->cached_wait_status
= 0;
3578 if (!target_is_async_p ())
3580 ofunc
= signal (SIGINT
, remote_interrupt
);
3581 /* If the user hit C-c before this packet, or between packets,
3582 pretend that it was hit right here. */
3586 remote_interrupt (SIGINT
);
3589 /* FIXME: cagney/1999-09-27: If we're in async mode we should
3590 _never_ wait for ever -> test on target_is_async_p().
3591 However, before we do that we need to ensure that the caller
3592 knows how to take the target into/out of async mode. */
3593 getpkt (&rs
->buf
, &rs
->buf_size
, wait_forever_enabled_p
);
3594 if (!target_is_async_p ())
3595 signal (SIGINT
, ofunc
);
3602 case 'E': /* Error of some sort. */
3603 /* We're out of sync with the target now. Did it continue or not?
3604 Not is more likely, so report a stop. */
3605 warning (_("Remote failure reply: %s"), buf
);
3606 status
->kind
= TARGET_WAITKIND_STOPPED
;
3607 status
->value
.sig
= TARGET_SIGNAL_0
;
3609 case 'F': /* File-I/O request. */
3610 remote_fileio_request (buf
);
3612 case 'T': /* Status with PC, SP, FP, ... */
3614 gdb_byte regs
[MAX_REGISTER_SIZE
];
3616 /* Expedited reply, containing Signal, {regno, reg} repeat. */
3617 /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where
3619 n... = register number
3620 r... = register contents
3622 p
= &buf
[3]; /* after Txx */
3631 /* If the packet contains a register number, save it
3632 in pnum and set p1 to point to the character
3633 following it. Otherwise p1 points to p. */
3635 /* If this packet is an awatch packet, don't parse the 'a'
3636 as a register number. */
3638 if (strncmp (p
, "awatch", strlen("awatch")) != 0)
3640 /* Read the register number. */
3641 pnum
= strtol (p
, &p_temp
, 16);
3647 if (p1
== p
) /* No register number present here. */
3649 p1
= strchr (p
, ':');
3651 error (_("Malformed packet(a) (missing colon): %s\n\
3654 if (strncmp (p
, "thread", p1
- p
) == 0)
3656 p_temp
= unpack_varlen_hex (++p1
, &thread_num
);
3657 record_currthread (thread_num
);
3660 else if ((strncmp (p
, "watch", p1
- p
) == 0)
3661 || (strncmp (p
, "rwatch", p1
- p
) == 0)
3662 || (strncmp (p
, "awatch", p1
- p
) == 0))
3664 remote_stopped_by_watchpoint_p
= 1;
3665 p
= unpack_varlen_hex (++p1
, &addr
);
3666 remote_watch_data_address
= (CORE_ADDR
)addr
;
3668 else if (strncmp (p
, "library", p1
- p
) == 0)
3672 while (*p_temp
&& *p_temp
!= ';')
3680 /* Silently skip unknown optional info. */
3681 p_temp
= strchr (p1
+ 1, ';');
3689 struct packet_reg
*reg
= packet_reg_from_pnum (rsa
, pnum
);
3692 error (_("Malformed packet(b) (missing colon): %s\n\
3697 error (_("Remote sent bad register number %ld: %s\n\
3701 fieldsize
= hex2bin (p
, regs
,
3702 register_size (current_gdbarch
,
3705 if (fieldsize
< register_size (current_gdbarch
,
3707 warning (_("Remote reply is too short: %s"), buf
);
3708 regcache_raw_supply (get_current_regcache (),
3713 error (_("Remote register badly formatted: %s\nhere: %s"),
3718 case 'S': /* Old style status, just signal only. */
3720 status
->kind
= TARGET_WAITKIND_LOADED
;
3723 status
->kind
= TARGET_WAITKIND_STOPPED
;
3724 status
->value
.sig
= (enum target_signal
)
3725 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
3730 thread_num
= strtol ((const char *) &buf
[4], NULL
, 16);
3731 record_currthread (thread_num
);
3734 case 'W': /* Target exited. */
3736 /* The remote process exited. */
3737 status
->kind
= TARGET_WAITKIND_EXITED
;
3738 status
->value
.integer
= (fromhex (buf
[1]) << 4) + fromhex (buf
[2]);
3742 status
->kind
= TARGET_WAITKIND_SIGNALLED
;
3743 status
->value
.sig
= (enum target_signal
)
3744 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
3748 case 'O': /* Console output. */
3749 remote_console_output (buf
+ 1);
3750 /* Return immediately to the event loop. The event loop will
3751 still be waiting on the inferior afterwards. */
3752 status
->kind
= TARGET_WAITKIND_IGNORE
;
3755 if (last_sent_signal
!= TARGET_SIGNAL_0
)
3757 /* Zero length reply means that we tried 'S' or 'C' and
3758 the remote system doesn't support it. */
3759 target_terminal_ours_for_output ();
3761 ("Can't send signals to this remote system. %s not sent.\n",
3762 target_signal_to_name (last_sent_signal
));
3763 last_sent_signal
= TARGET_SIGNAL_0
;
3764 target_terminal_inferior ();
3766 strcpy ((char *) buf
, last_sent_step
? "s" : "c");
3767 putpkt ((char *) buf
);
3770 /* else fallthrough */
3772 warning (_("Invalid remote reply: %s"), buf
);
3777 if (thread_num
!= -1)
3779 return pid_to_ptid (thread_num
);
3781 return inferior_ptid
;
3784 /* Fetch a single register using a 'p' packet. */
3787 fetch_register_using_p (struct regcache
*regcache
, struct packet_reg
*reg
)
3789 struct remote_state
*rs
= get_remote_state ();
3791 char regp
[MAX_REGISTER_SIZE
];
3794 if (remote_protocol_packets
[PACKET_p
].support
== PACKET_DISABLE
)
3797 if (reg
->pnum
== -1)
3802 p
+= hexnumstr (p
, reg
->pnum
);
3804 remote_send (&rs
->buf
, &rs
->buf_size
);
3808 switch (packet_ok (buf
, &remote_protocol_packets
[PACKET_p
]))
3812 case PACKET_UNKNOWN
:
3815 error (_("Could not fetch register \"%s\""),
3816 gdbarch_register_name (get_regcache_arch (regcache
), reg
->regnum
));
3819 /* If this register is unfetchable, tell the regcache. */
3822 regcache_raw_supply (regcache
, reg
->regnum
, NULL
);
3826 /* Otherwise, parse and supply the value. */
3832 error (_("fetch_register_using_p: early buf termination"));
3834 regp
[i
++] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
3837 regcache_raw_supply (regcache
, reg
->regnum
, regp
);
3841 /* Fetch the registers included in the target's 'g' packet. */
3844 send_g_packet (void)
3846 struct remote_state
*rs
= get_remote_state ();
3851 sprintf (rs
->buf
, "g");
3852 remote_send (&rs
->buf
, &rs
->buf_size
);
3854 /* We can get out of synch in various cases. If the first character
3855 in the buffer is not a hex character, assume that has happened
3856 and try to fetch another packet to read. */
3857 while ((rs
->buf
[0] < '0' || rs
->buf
[0] > '9')
3858 && (rs
->buf
[0] < 'A' || rs
->buf
[0] > 'F')
3859 && (rs
->buf
[0] < 'a' || rs
->buf
[0] > 'f')
3860 && rs
->buf
[0] != 'x') /* New: unavailable register value. */
3863 fprintf_unfiltered (gdb_stdlog
,
3864 "Bad register packet; fetching a new packet\n");
3865 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3868 buf_len
= strlen (rs
->buf
);
3870 /* Sanity check the received packet. */
3871 if (buf_len
% 2 != 0)
3872 error (_("Remote 'g' packet reply is of odd length: %s"), rs
->buf
);
3878 process_g_packet (struct regcache
*regcache
)
3880 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
3881 struct remote_state
*rs
= get_remote_state ();
3882 struct remote_arch_state
*rsa
= get_remote_arch_state ();
3887 buf_len
= strlen (rs
->buf
);
3889 /* Further sanity checks, with knowledge of the architecture. */
3890 if (buf_len
> 2 * rsa
->sizeof_g_packet
)
3891 error (_("Remote 'g' packet reply is too long: %s"), rs
->buf
);
3893 /* Save the size of the packet sent to us by the target. It is used
3894 as a heuristic when determining the max size of packets that the
3895 target can safely receive. */
3896 if (rsa
->actual_register_packet_size
== 0)
3897 rsa
->actual_register_packet_size
= buf_len
;
3899 /* If this is smaller than we guessed the 'g' packet would be,
3900 update our records. A 'g' reply that doesn't include a register's
3901 value implies either that the register is not available, or that
3902 the 'p' packet must be used. */
3903 if (buf_len
< 2 * rsa
->sizeof_g_packet
)
3905 rsa
->sizeof_g_packet
= buf_len
/ 2;
3907 for (i
= 0; i
< gdbarch_num_regs (gdbarch
); i
++)
3909 if (rsa
->regs
[i
].pnum
== -1)
3912 if (rsa
->regs
[i
].offset
>= rsa
->sizeof_g_packet
)
3913 rsa
->regs
[i
].in_g_packet
= 0;
3915 rsa
->regs
[i
].in_g_packet
= 1;
3919 regs
= alloca (rsa
->sizeof_g_packet
);
3921 /* Unimplemented registers read as all bits zero. */
3922 memset (regs
, 0, rsa
->sizeof_g_packet
);
3924 /* Reply describes registers byte by byte, each byte encoded as two
3925 hex characters. Suck them all up, then supply them to the
3926 register cacheing/storage mechanism. */
3929 for (i
= 0; i
< rsa
->sizeof_g_packet
; i
++)
3931 if (p
[0] == 0 || p
[1] == 0)
3932 /* This shouldn't happen - we adjusted sizeof_g_packet above. */
3933 internal_error (__FILE__
, __LINE__
,
3934 "unexpected end of 'g' packet reply");
3936 if (p
[0] == 'x' && p
[1] == 'x')
3937 regs
[i
] = 0; /* 'x' */
3939 regs
[i
] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
3945 for (i
= 0; i
< gdbarch_num_regs (gdbarch
); i
++)
3947 struct packet_reg
*r
= &rsa
->regs
[i
];
3950 if (r
->offset
* 2 >= strlen (rs
->buf
))
3951 /* This shouldn't happen - we adjusted in_g_packet above. */
3952 internal_error (__FILE__
, __LINE__
,
3953 "unexpected end of 'g' packet reply");
3954 else if (rs
->buf
[r
->offset
* 2] == 'x')
3956 gdb_assert (r
->offset
* 2 < strlen (rs
->buf
));
3957 /* The register isn't available, mark it as such (at
3958 the same time setting the value to zero). */
3959 regcache_raw_supply (regcache
, r
->regnum
, NULL
);
3962 regcache_raw_supply (regcache
, r
->regnum
,
3970 fetch_registers_using_g (struct regcache
*regcache
)
3973 process_g_packet (regcache
);
3977 remote_fetch_registers (struct regcache
*regcache
, int regnum
)
3979 struct remote_state
*rs
= get_remote_state ();
3980 struct remote_arch_state
*rsa
= get_remote_arch_state ();
3983 set_thread (PIDGET (inferior_ptid
), 1);
3987 struct packet_reg
*reg
= packet_reg_from_regnum (rsa
, regnum
);
3988 gdb_assert (reg
!= NULL
);
3990 /* If this register might be in the 'g' packet, try that first -
3991 we are likely to read more than one register. If this is the
3992 first 'g' packet, we might be overly optimistic about its
3993 contents, so fall back to 'p'. */
3994 if (reg
->in_g_packet
)
3996 fetch_registers_using_g (regcache
);
3997 if (reg
->in_g_packet
)
4001 if (fetch_register_using_p (regcache
, reg
))
4004 /* This register is not available. */
4005 regcache_raw_supply (regcache
, reg
->regnum
, NULL
);
4010 fetch_registers_using_g (regcache
);
4012 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
4013 if (!rsa
->regs
[i
].in_g_packet
)
4014 if (!fetch_register_using_p (regcache
, &rsa
->regs
[i
]))
4016 /* This register is not available. */
4017 regcache_raw_supply (regcache
, i
, NULL
);
4021 /* Prepare to store registers. Since we may send them all (using a
4022 'G' request), we have to read out the ones we don't want to change
4026 remote_prepare_to_store (struct regcache
*regcache
)
4028 struct remote_arch_state
*rsa
= get_remote_arch_state ();
4030 gdb_byte buf
[MAX_REGISTER_SIZE
];
4032 /* Make sure the entire registers array is valid. */
4033 switch (remote_protocol_packets
[PACKET_P
].support
)
4035 case PACKET_DISABLE
:
4036 case PACKET_SUPPORT_UNKNOWN
:
4037 /* Make sure all the necessary registers are cached. */
4038 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
4039 if (rsa
->regs
[i
].in_g_packet
)
4040 regcache_raw_read (regcache
, rsa
->regs
[i
].regnum
, buf
);
4047 /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF
4048 packet was not recognized. */
4051 store_register_using_P (const struct regcache
*regcache
, struct packet_reg
*reg
)
4053 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
4054 struct remote_state
*rs
= get_remote_state ();
4055 struct remote_arch_state
*rsa
= get_remote_arch_state ();
4056 /* Try storing a single register. */
4057 char *buf
= rs
->buf
;
4058 gdb_byte regp
[MAX_REGISTER_SIZE
];
4061 if (remote_protocol_packets
[PACKET_P
].support
== PACKET_DISABLE
)
4064 if (reg
->pnum
== -1)
4067 xsnprintf (buf
, get_remote_packet_size (), "P%s=", phex_nz (reg
->pnum
, 0));
4068 p
= buf
+ strlen (buf
);
4069 regcache_raw_collect (regcache
, reg
->regnum
, regp
);
4070 bin2hex (regp
, p
, register_size (gdbarch
, reg
->regnum
));
4071 remote_send (&rs
->buf
, &rs
->buf_size
);
4073 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_P
]))
4078 error (_("Could not write register \"%s\""),
4079 gdbarch_register_name (gdbarch
, reg
->regnum
));
4080 case PACKET_UNKNOWN
:
4083 internal_error (__FILE__
, __LINE__
, _("Bad result from packet_ok"));
4087 /* Store register REGNUM, or all registers if REGNUM == -1, from the
4088 contents of the register cache buffer. FIXME: ignores errors. */
4091 store_registers_using_G (const struct regcache
*regcache
)
4093 struct remote_state
*rs
= get_remote_state ();
4094 struct remote_arch_state
*rsa
= get_remote_arch_state ();
4098 /* Extract all the registers in the regcache copying them into a
4102 regs
= alloca (rsa
->sizeof_g_packet
);
4103 memset (regs
, 0, rsa
->sizeof_g_packet
);
4104 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
4106 struct packet_reg
*r
= &rsa
->regs
[i
];
4108 regcache_raw_collect (regcache
, r
->regnum
, regs
+ r
->offset
);
4112 /* Command describes registers byte by byte,
4113 each byte encoded as two hex characters. */
4116 /* remote_prepare_to_store insures that rsa->sizeof_g_packet gets
4118 bin2hex (regs
, p
, rsa
->sizeof_g_packet
);
4119 remote_send (&rs
->buf
, &rs
->buf_size
);
4122 /* Store register REGNUM, or all registers if REGNUM == -1, from the contents
4123 of the register cache buffer. FIXME: ignores errors. */
4126 remote_store_registers (struct regcache
*regcache
, int regnum
)
4128 struct remote_state
*rs
= get_remote_state ();
4129 struct remote_arch_state
*rsa
= get_remote_arch_state ();
4132 set_thread (PIDGET (inferior_ptid
), 1);
4136 struct packet_reg
*reg
= packet_reg_from_regnum (rsa
, regnum
);
4137 gdb_assert (reg
!= NULL
);
4139 /* Always prefer to store registers using the 'P' packet if
4140 possible; we often change only a small number of registers.
4141 Sometimes we change a larger number; we'd need help from a
4142 higher layer to know to use 'G'. */
4143 if (store_register_using_P (regcache
, reg
))
4146 /* For now, don't complain if we have no way to write the
4147 register. GDB loses track of unavailable registers too
4148 easily. Some day, this may be an error. We don't have
4149 any way to read the register, either... */
4150 if (!reg
->in_g_packet
)
4153 store_registers_using_G (regcache
);
4157 store_registers_using_G (regcache
);
4159 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
4160 if (!rsa
->regs
[i
].in_g_packet
)
4161 if (!store_register_using_P (regcache
, &rsa
->regs
[i
]))
4162 /* See above for why we do not issue an error here. */
4167 /* Return the number of hex digits in num. */
4170 hexnumlen (ULONGEST num
)
4174 for (i
= 0; num
!= 0; i
++)
4180 /* Set BUF to the minimum number of hex digits representing NUM. */
4183 hexnumstr (char *buf
, ULONGEST num
)
4185 int len
= hexnumlen (num
);
4186 return hexnumnstr (buf
, num
, len
);
4190 /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */
4193 hexnumnstr (char *buf
, ULONGEST num
, int width
)
4199 for (i
= width
- 1; i
>= 0; i
--)
4201 buf
[i
] = "0123456789abcdef"[(num
& 0xf)];
4208 /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */
4211 remote_address_masked (CORE_ADDR addr
)
4213 int address_size
= remote_address_size
;
4214 /* If "remoteaddresssize" was not set, default to target address size. */
4216 address_size
= gdbarch_addr_bit (current_gdbarch
);
4218 if (address_size
> 0
4219 && address_size
< (sizeof (ULONGEST
) * 8))
4221 /* Only create a mask when that mask can safely be constructed
4222 in a ULONGEST variable. */
4224 mask
= (mask
<< address_size
) - 1;
4230 /* Convert BUFFER, binary data at least LEN bytes long, into escaped
4231 binary data in OUT_BUF. Set *OUT_LEN to the length of the data
4232 encoded in OUT_BUF, and return the number of bytes in OUT_BUF
4233 (which may be more than *OUT_LEN due to escape characters). The
4234 total number of bytes in the output buffer will be at most
4238 remote_escape_output (const gdb_byte
*buffer
, int len
,
4239 gdb_byte
*out_buf
, int *out_len
,
4242 int input_index
, output_index
;
4245 for (input_index
= 0; input_index
< len
; input_index
++)
4247 gdb_byte b
= buffer
[input_index
];
4249 if (b
== '$' || b
== '#' || b
== '}')
4251 /* These must be escaped. */
4252 if (output_index
+ 2 > out_maxlen
)
4254 out_buf
[output_index
++] = '}';
4255 out_buf
[output_index
++] = b
^ 0x20;
4259 if (output_index
+ 1 > out_maxlen
)
4261 out_buf
[output_index
++] = b
;
4265 *out_len
= input_index
;
4266 return output_index
;
4269 /* Convert BUFFER, escaped data LEN bytes long, into binary data
4270 in OUT_BUF. Return the number of bytes written to OUT_BUF.
4271 Raise an error if the total number of bytes exceeds OUT_MAXLEN.
4273 This function reverses remote_escape_output. It allows more
4274 escaped characters than that function does, in particular because
4275 '*' must be escaped to avoid the run-length encoding processing
4276 in reading packets. */
4279 remote_unescape_input (const gdb_byte
*buffer
, int len
,
4280 gdb_byte
*out_buf
, int out_maxlen
)
4282 int input_index
, output_index
;
4287 for (input_index
= 0; input_index
< len
; input_index
++)
4289 gdb_byte b
= buffer
[input_index
];
4291 if (output_index
+ 1 > out_maxlen
)
4293 warning (_("Received too much data from remote target;"
4294 " ignoring overflow."));
4295 return output_index
;
4300 out_buf
[output_index
++] = b
^ 0x20;
4306 out_buf
[output_index
++] = b
;
4310 error (_("Unmatched escape character in target response."));
4312 return output_index
;
4315 /* Determine whether the remote target supports binary downloading.
4316 This is accomplished by sending a no-op memory write of zero length
4317 to the target at the specified address. It does not suffice to send
4318 the whole packet, since many stubs strip the eighth bit and
4319 subsequently compute a wrong checksum, which causes real havoc with
4322 NOTE: This can still lose if the serial line is not eight-bit
4323 clean. In cases like this, the user should clear "remote
4327 check_binary_download (CORE_ADDR addr
)
4329 struct remote_state
*rs
= get_remote_state ();
4331 switch (remote_protocol_packets
[PACKET_X
].support
)
4333 case PACKET_DISABLE
:
4337 case PACKET_SUPPORT_UNKNOWN
:
4343 p
+= hexnumstr (p
, (ULONGEST
) addr
);
4345 p
+= hexnumstr (p
, (ULONGEST
) 0);
4349 putpkt_binary (rs
->buf
, (int) (p
- rs
->buf
));
4350 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4352 if (rs
->buf
[0] == '\0')
4355 fprintf_unfiltered (gdb_stdlog
,
4356 "binary downloading NOT suppported by target\n");
4357 remote_protocol_packets
[PACKET_X
].support
= PACKET_DISABLE
;
4362 fprintf_unfiltered (gdb_stdlog
,
4363 "binary downloading suppported by target\n");
4364 remote_protocol_packets
[PACKET_X
].support
= PACKET_ENABLE
;
4371 /* Write memory data directly to the remote machine.
4372 This does not inform the data cache; the data cache uses this.
4373 HEADER is the starting part of the packet.
4374 MEMADDR is the address in the remote memory space.
4375 MYADDR is the address of the buffer in our space.
4376 LEN is the number of bytes.
4377 PACKET_FORMAT should be either 'X' or 'M', and indicates if we
4378 should send data as binary ('X'), or hex-encoded ('M').
4380 The function creates packet of the form
4381 <HEADER><ADDRESS>,<LENGTH>:<DATA>
4383 where encoding of <DATA> is termined by PACKET_FORMAT.
4385 If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma
4388 Returns the number of bytes transferred, or 0 (setting errno) for
4389 error. Only transfer a single packet. */
4392 remote_write_bytes_aux (const char *header
, CORE_ADDR memaddr
,
4393 const gdb_byte
*myaddr
, int len
,
4394 char packet_format
, int use_length
)
4396 struct remote_state
*rs
= get_remote_state ();
4406 if (packet_format
!= 'X' && packet_format
!= 'M')
4407 internal_error (__FILE__
, __LINE__
,
4408 "remote_write_bytes_aux: bad packet format");
4413 payload_size
= get_memory_write_packet_size ();
4415 /* The packet buffer will be large enough for the payload;
4416 get_memory_packet_size ensures this. */
4419 /* Compute the size of the actual payload by subtracting out the
4420 packet header and footer overhead: "$M<memaddr>,<len>:...#nn".
4422 payload_size
-= strlen ("$,:#NN");
4424 /* The comma won't be used. */
4426 header_length
= strlen (header
);
4427 payload_size
-= header_length
;
4428 payload_size
-= hexnumlen (memaddr
);
4430 /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */
4432 strcat (rs
->buf
, header
);
4433 p
= rs
->buf
+ strlen (header
);
4435 /* Compute a best guess of the number of bytes actually transfered. */
4436 if (packet_format
== 'X')
4438 /* Best guess at number of bytes that will fit. */
4439 todo
= min (len
, payload_size
);
4441 payload_size
-= hexnumlen (todo
);
4442 todo
= min (todo
, payload_size
);
4446 /* Num bytes that will fit. */
4447 todo
= min (len
, payload_size
/ 2);
4449 payload_size
-= hexnumlen (todo
);
4450 todo
= min (todo
, payload_size
/ 2);
4454 internal_error (__FILE__
, __LINE__
,
4455 _("minumum packet size too small to write data"));
4457 /* If we already need another packet, then try to align the end
4458 of this packet to a useful boundary. */
4459 if (todo
> 2 * REMOTE_ALIGN_WRITES
&& todo
< len
)
4460 todo
= ((memaddr
+ todo
) & ~(REMOTE_ALIGN_WRITES
- 1)) - memaddr
;
4462 /* Append "<memaddr>". */
4463 memaddr
= remote_address_masked (memaddr
);
4464 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
4471 /* Append <len>. Retain the location/size of <len>. It may need to
4472 be adjusted once the packet body has been created. */
4474 plenlen
= hexnumstr (p
, (ULONGEST
) todo
);
4482 /* Append the packet body. */
4483 if (packet_format
== 'X')
4485 /* Binary mode. Send target system values byte by byte, in
4486 increasing byte addresses. Only escape certain critical
4488 payload_length
= remote_escape_output (myaddr
, todo
, p
, &nr_bytes
,
4491 /* If not all TODO bytes fit, then we'll need another packet. Make
4492 a second try to keep the end of the packet aligned. Don't do
4493 this if the packet is tiny. */
4494 if (nr_bytes
< todo
&& nr_bytes
> 2 * REMOTE_ALIGN_WRITES
)
4498 new_nr_bytes
= (((memaddr
+ nr_bytes
) & ~(REMOTE_ALIGN_WRITES
- 1))
4500 if (new_nr_bytes
!= nr_bytes
)
4501 payload_length
= remote_escape_output (myaddr
, new_nr_bytes
,
4506 p
+= payload_length
;
4507 if (use_length
&& nr_bytes
< todo
)
4509 /* Escape chars have filled up the buffer prematurely,
4510 and we have actually sent fewer bytes than planned.
4511 Fix-up the length field of the packet. Use the same
4512 number of characters as before. */
4513 plen
+= hexnumnstr (plen
, (ULONGEST
) nr_bytes
, plenlen
);
4514 *plen
= ':'; /* overwrite \0 from hexnumnstr() */
4519 /* Normal mode: Send target system values byte by byte, in
4520 increasing byte addresses. Each byte is encoded as a two hex
4522 nr_bytes
= bin2hex (myaddr
, p
, todo
);
4526 putpkt_binary (rs
->buf
, (int) (p
- rs
->buf
));
4527 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4529 if (rs
->buf
[0] == 'E')
4531 /* There is no correspondance between what the remote protocol
4532 uses for errors and errno codes. We would like a cleaner way
4533 of representing errors (big enough to include errno codes,
4534 bfd_error codes, and others). But for now just return EIO. */
4539 /* Return NR_BYTES, not TODO, in case escape chars caused us to send
4540 fewer bytes than we'd planned. */
4544 /* Write memory data directly to the remote machine.
4545 This does not inform the data cache; the data cache uses this.
4546 MEMADDR is the address in the remote memory space.
4547 MYADDR is the address of the buffer in our space.
4548 LEN is the number of bytes.
4550 Returns number of bytes transferred, or 0 (setting errno) for
4551 error. Only transfer a single packet. */
4554 remote_write_bytes (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, int len
)
4556 char *packet_format
= 0;
4558 /* Check whether the target supports binary download. */
4559 check_binary_download (memaddr
);
4561 switch (remote_protocol_packets
[PACKET_X
].support
)
4564 packet_format
= "X";
4566 case PACKET_DISABLE
:
4567 packet_format
= "M";
4569 case PACKET_SUPPORT_UNKNOWN
:
4570 internal_error (__FILE__
, __LINE__
,
4571 _("remote_write_bytes: bad internal state"));
4573 internal_error (__FILE__
, __LINE__
, _("bad switch"));
4576 return remote_write_bytes_aux (packet_format
,
4577 memaddr
, myaddr
, len
, packet_format
[0], 1);
4580 /* Read memory data directly from the remote machine.
4581 This does not use the data cache; the data cache uses this.
4582 MEMADDR is the address in the remote memory space.
4583 MYADDR is the address of the buffer in our space.
4584 LEN is the number of bytes.
4586 Returns number of bytes transferred, or 0 for error. */
4588 /* NOTE: cagney/1999-10-18: This function (and its siblings in other
4589 remote targets) shouldn't attempt to read the entire buffer.
4590 Instead it should read a single packet worth of data and then
4591 return the byte size of that packet to the caller. The caller (its
4592 caller and its callers caller ;-) already contains code for
4593 handling partial reads. */
4596 remote_read_bytes (CORE_ADDR memaddr
, gdb_byte
*myaddr
, int len
)
4598 struct remote_state
*rs
= get_remote_state ();
4599 int max_buf_size
; /* Max size of packet output buffer. */
4605 max_buf_size
= get_memory_read_packet_size ();
4606 /* The packet buffer will be large enough for the payload;
4607 get_memory_packet_size ensures this. */
4616 todo
= min (len
, max_buf_size
/ 2); /* num bytes that will fit */
4618 /* construct "m"<memaddr>","<len>" */
4619 /* sprintf (rs->buf, "m%lx,%x", (unsigned long) memaddr, todo); */
4620 memaddr
= remote_address_masked (memaddr
);
4623 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
4625 p
+= hexnumstr (p
, (ULONGEST
) todo
);
4629 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4631 if (rs
->buf
[0] == 'E'
4632 && isxdigit (rs
->buf
[1]) && isxdigit (rs
->buf
[2])
4633 && rs
->buf
[3] == '\0')
4635 /* There is no correspondance between what the remote
4636 protocol uses for errors and errno codes. We would like
4637 a cleaner way of representing errors (big enough to
4638 include errno codes, bfd_error codes, and others). But
4639 for now just return EIO. */
4644 /* Reply describes memory byte by byte,
4645 each byte encoded as two hex characters. */
4648 if ((i
= hex2bin (p
, myaddr
, todo
)) < todo
)
4650 /* Reply is short. This means that we were able to read
4651 only part of what we wanted to. */
4652 return i
+ (origlen
- len
);
4661 /* Read or write LEN bytes from inferior memory at MEMADDR,
4662 transferring to or from debugger address BUFFER. Write to inferior
4663 if SHOULD_WRITE is nonzero. Returns length of data written or
4664 read; 0 for error. TARGET is unused. */
4667 remote_xfer_memory (CORE_ADDR mem_addr
, gdb_byte
*buffer
, int mem_len
,
4668 int should_write
, struct mem_attrib
*attrib
,
4669 struct target_ops
*target
)
4674 res
= remote_write_bytes (mem_addr
, buffer
, mem_len
);
4676 res
= remote_read_bytes (mem_addr
, buffer
, mem_len
);
4681 /* Sends a packet with content determined by the printf format string
4682 FORMAT and the remaining arguments, then gets the reply. Returns
4683 whether the packet was a success, a failure, or unknown. */
4686 remote_send_printf (const char *format
, ...)
4688 struct remote_state
*rs
= get_remote_state ();
4689 int max_size
= get_remote_packet_size ();
4692 va_start (ap
, format
);
4695 if (vsnprintf (rs
->buf
, max_size
, format
, ap
) >= max_size
)
4696 internal_error (__FILE__
, __LINE__
, "Too long remote packet.");
4698 if (putpkt (rs
->buf
) < 0)
4699 error (_("Communication problem with target."));
4702 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4704 return packet_check_result (rs
->buf
);
4708 restore_remote_timeout (void *p
)
4710 int value
= *(int *)p
;
4711 remote_timeout
= value
;
4714 /* Flash writing can take quite some time. We'll set
4715 effectively infinite timeout for flash operations.
4716 In future, we'll need to decide on a better approach. */
4717 static const int remote_flash_timeout
= 1000;
4720 remote_flash_erase (struct target_ops
*ops
,
4721 ULONGEST address
, LONGEST length
)
4723 int saved_remote_timeout
= remote_timeout
;
4724 enum packet_result ret
;
4726 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
4727 &saved_remote_timeout
);
4728 remote_timeout
= remote_flash_timeout
;
4730 ret
= remote_send_printf ("vFlashErase:%s,%s",
4735 case PACKET_UNKNOWN
:
4736 error (_("Remote target does not support flash erase"));
4738 error (_("Error erasing flash with vFlashErase packet"));
4743 do_cleanups (back_to
);
4747 remote_flash_write (struct target_ops
*ops
,
4748 ULONGEST address
, LONGEST length
,
4749 const gdb_byte
*data
)
4751 int saved_remote_timeout
= remote_timeout
;
4753 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
4754 &saved_remote_timeout
);
4756 remote_timeout
= remote_flash_timeout
;
4757 ret
= remote_write_bytes_aux ("vFlashWrite:", address
, data
, length
, 'X', 0);
4758 do_cleanups (back_to
);
4764 remote_flash_done (struct target_ops
*ops
)
4766 int saved_remote_timeout
= remote_timeout
;
4768 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
4769 &saved_remote_timeout
);
4771 remote_timeout
= remote_flash_timeout
;
4772 ret
= remote_send_printf ("vFlashDone");
4773 do_cleanups (back_to
);
4777 case PACKET_UNKNOWN
:
4778 error (_("Remote target does not support vFlashDone"));
4780 error (_("Error finishing flash operation"));
4787 remote_files_info (struct target_ops
*ignore
)
4789 puts_filtered ("Debugging a target over a serial line.\n");
4792 /* Stuff for dealing with the packets which are part of this protocol.
4793 See comment at top of file for details. */
4795 /* Read a single character from the remote end. */
4798 readchar (int timeout
)
4802 ch
= serial_readchar (remote_desc
, timeout
);
4807 switch ((enum serial_rc
) ch
)
4810 target_mourn_inferior ();
4811 error (_("Remote connection closed"));
4814 perror_with_name (_("Remote communication error"));
4816 case SERIAL_TIMEOUT
:
4822 /* Send the command in *BUF to the remote machine, and read the reply
4823 into *BUF. Report an error if we get an error reply. Resize
4824 *BUF using xrealloc if necessary to hold the result, and update
4828 remote_send (char **buf
,
4832 getpkt (buf
, sizeof_buf
, 0);
4834 if ((*buf
)[0] == 'E')
4835 error (_("Remote failure reply: %s"), *buf
);
4838 /* Display a null-terminated packet on stdout, for debugging, using C
4842 print_packet (char *buf
)
4844 puts_filtered ("\"");
4845 fputstr_filtered (buf
, '"', gdb_stdout
);
4846 puts_filtered ("\"");
4852 return putpkt_binary (buf
, strlen (buf
));
4855 /* Send a packet to the remote machine, with error checking. The data
4856 of the packet is in BUF. The string in BUF can be at most
4857 get_remote_packet_size () - 5 to account for the $, # and checksum,
4858 and for a possible /0 if we are debugging (remote_debug) and want
4859 to print the sent packet as a string. */
4862 putpkt_binary (char *buf
, int cnt
)
4864 struct remote_state
*rs
= get_remote_state ();
4866 unsigned char csum
= 0;
4867 char *buf2
= alloca (cnt
+ 6);
4873 /* We're sending out a new packet. Make sure we don't look at a
4874 stale cached response. */
4875 rs
->cached_wait_status
= 0;
4877 /* Copy the packet into buffer BUF2, encapsulating it
4878 and giving it a checksum. */
4883 for (i
= 0; i
< cnt
; i
++)
4889 *p
++ = tohex ((csum
>> 4) & 0xf);
4890 *p
++ = tohex (csum
& 0xf);
4892 /* Send it over and over until we get a positive ack. */
4896 int started_error_output
= 0;
4901 fprintf_unfiltered (gdb_stdlog
, "Sending packet: ");
4902 fputstrn_unfiltered (buf2
, p
- buf2
, 0, gdb_stdlog
);
4903 fprintf_unfiltered (gdb_stdlog
, "...");
4904 gdb_flush (gdb_stdlog
);
4906 if (serial_write (remote_desc
, buf2
, p
- buf2
))
4907 perror_with_name (_("putpkt: write failed"));
4909 /* Read until either a timeout occurs (-2) or '+' is read. */
4912 ch
= readchar (remote_timeout
);
4920 case SERIAL_TIMEOUT
:
4922 if (started_error_output
)
4924 putchar_unfiltered ('\n');
4925 started_error_output
= 0;
4934 fprintf_unfiltered (gdb_stdlog
, "Ack\n");
4938 fprintf_unfiltered (gdb_stdlog
, "Nak\n");
4939 case SERIAL_TIMEOUT
:
4943 break; /* Retransmit buffer. */
4947 fprintf_unfiltered (gdb_stdlog
,
4948 "Packet instead of Ack, ignoring it\n");
4949 /* It's probably an old response sent because an ACK
4950 was lost. Gobble up the packet and ack it so it
4951 doesn't get retransmitted when we resend this
4954 serial_write (remote_desc
, "+", 1);
4955 continue; /* Now, go look for +. */
4960 if (!started_error_output
)
4962 started_error_output
= 1;
4963 fprintf_unfiltered (gdb_stdlog
, "putpkt: Junk: ");
4965 fputc_unfiltered (ch
& 0177, gdb_stdlog
);
4969 break; /* Here to retransmit. */
4973 /* This is wrong. If doing a long backtrace, the user should be
4974 able to get out next time we call QUIT, without anything as
4975 violent as interrupt_query. If we want to provide a way out of
4976 here without getting to the next QUIT, it should be based on
4977 hitting ^C twice as in remote_wait. */
4987 /* Come here after finding the start of a frame when we expected an
4988 ack. Do our best to discard the rest of this packet. */
4997 c
= readchar (remote_timeout
);
5000 case SERIAL_TIMEOUT
:
5001 /* Nothing we can do. */
5004 /* Discard the two bytes of checksum and stop. */
5005 c
= readchar (remote_timeout
);
5007 c
= readchar (remote_timeout
);
5010 case '*': /* Run length encoding. */
5011 /* Discard the repeat count. */
5012 c
= readchar (remote_timeout
);
5017 /* A regular character. */
5023 /* Come here after finding the start of the frame. Collect the rest
5024 into *BUF, verifying the checksum, length, and handling run-length
5025 compression. NUL terminate the buffer. If there is not enough room,
5026 expand *BUF using xrealloc.
5028 Returns -1 on error, number of characters in buffer (ignoring the
5029 trailing NULL) on success. (could be extended to return one of the
5030 SERIAL status indications). */
5033 read_frame (char **buf_p
,
5046 c
= readchar (remote_timeout
);
5049 case SERIAL_TIMEOUT
:
5051 fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog
);
5055 fputs_filtered ("Saw new packet start in middle of old one\n",
5057 return -1; /* Start a new packet, count retries. */
5060 unsigned char pktcsum
;
5066 check_0
= readchar (remote_timeout
);
5068 check_1
= readchar (remote_timeout
);
5070 if (check_0
== SERIAL_TIMEOUT
|| check_1
== SERIAL_TIMEOUT
)
5073 fputs_filtered ("Timeout in checksum, retrying\n",
5077 else if (check_0
< 0 || check_1
< 0)
5080 fputs_filtered ("Communication error in checksum\n",
5085 pktcsum
= (fromhex (check_0
) << 4) | fromhex (check_1
);
5086 if (csum
== pktcsum
)
5091 fprintf_filtered (gdb_stdlog
,
5092 "Bad checksum, sentsum=0x%x, csum=0x%x, buf=",
5094 fputstrn_filtered (buf
, bc
, 0, gdb_stdlog
);
5095 fputs_filtered ("\n", gdb_stdlog
);
5097 /* Number of characters in buffer ignoring trailing
5101 case '*': /* Run length encoding. */
5106 c
= readchar (remote_timeout
);
5108 repeat
= c
- ' ' + 3; /* Compute repeat count. */
5110 /* The character before ``*'' is repeated. */
5112 if (repeat
> 0 && repeat
<= 255 && bc
> 0)
5114 if (bc
+ repeat
- 1 >= *sizeof_buf
- 1)
5116 /* Make some more room in the buffer. */
5117 *sizeof_buf
+= repeat
;
5118 *buf_p
= xrealloc (*buf_p
, *sizeof_buf
);
5122 memset (&buf
[bc
], buf
[bc
- 1], repeat
);
5128 printf_filtered (_("Invalid run length encoding: %s\n"), buf
);
5132 if (bc
>= *sizeof_buf
- 1)
5134 /* Make some more room in the buffer. */
5136 *buf_p
= xrealloc (*buf_p
, *sizeof_buf
);
5147 /* Read a packet from the remote machine, with error checking, and
5148 store it in *BUF. Resize *BUF using xrealloc if necessary to hold
5149 the result, and update *SIZEOF_BUF. If FOREVER, wait forever
5150 rather than timing out; this is used (in synchronous mode) to wait
5151 for a target that is is executing user code to stop. */
5152 /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we
5153 don't have to change all the calls to getpkt to deal with the
5154 return value, because at the moment I don't know what the right
5155 thing to do it for those. */
5163 timed_out
= getpkt_sane (buf
, sizeof_buf
, forever
);
5167 /* Read a packet from the remote machine, with error checking, and
5168 store it in *BUF. Resize *BUF using xrealloc if necessary to hold
5169 the result, and update *SIZEOF_BUF. If FOREVER, wait forever
5170 rather than timing out; this is used (in synchronous mode) to wait
5171 for a target that is is executing user code to stop. If FOREVER ==
5172 0, this function is allowed to time out gracefully and return an
5173 indication of this to the caller. Otherwise return the number
5176 getpkt_sane (char **buf
, long *sizeof_buf
, int forever
)
5178 struct remote_state
*rs
= get_remote_state ();
5184 /* We're reading a new response. Make sure we don't look at a
5185 previously cached response. */
5186 rs
->cached_wait_status
= 0;
5188 strcpy (*buf
, "timeout");
5192 timeout
= watchdog
> 0 ? watchdog
: -1;
5196 timeout
= remote_timeout
;
5200 for (tries
= 1; tries
<= MAX_TRIES
; tries
++)
5202 /* This can loop forever if the remote side sends us characters
5203 continuously, but if it pauses, we'll get a zero from
5204 readchar because of timeout. Then we'll count that as a
5207 /* Note that we will only wait forever prior to the start of a
5208 packet. After that, we expect characters to arrive at a
5209 brisk pace. They should show up within remote_timeout
5214 c
= readchar (timeout
);
5216 if (c
== SERIAL_TIMEOUT
)
5218 if (forever
) /* Watchdog went off? Kill the target. */
5221 target_mourn_inferior ();
5222 error (_("Watchdog timeout has expired. Target detached."));
5225 fputs_filtered ("Timed out.\n", gdb_stdlog
);
5231 /* We've found the start of a packet, now collect the data. */
5233 val
= read_frame (buf
, sizeof_buf
);
5239 fprintf_unfiltered (gdb_stdlog
, "Packet received: ");
5240 fputstrn_unfiltered (*buf
, val
, 0, gdb_stdlog
);
5241 fprintf_unfiltered (gdb_stdlog
, "\n");
5243 serial_write (remote_desc
, "+", 1);
5247 /* Try the whole thing again. */
5249 serial_write (remote_desc
, "-", 1);
5252 /* We have tried hard enough, and just can't receive the packet.
5255 printf_unfiltered (_("Ignoring packet error, continuing...\n"));
5256 serial_write (remote_desc
, "+", 1);
5263 /* For some mysterious reason, wait_for_inferior calls kill instead of
5264 mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */
5268 target_mourn_inferior ();
5272 /* Use catch_errors so the user can quit from gdb even when we aren't on
5273 speaking terms with the remote system. */
5274 catch_errors ((catch_errors_ftype
*) putpkt
, "k", "", RETURN_MASK_ERROR
);
5276 /* Don't wait for it to die. I'm not really sure it matters whether
5277 we do or not. For the existing stubs, kill is a noop. */
5278 target_mourn_inferior ();
5281 /* Async version of remote_kill. */
5283 remote_async_kill (void)
5285 /* Unregister the file descriptor from the event loop. */
5286 if (target_is_async_p ())
5287 serial_async (remote_desc
, NULL
, 0);
5289 /* For some mysterious reason, wait_for_inferior calls kill instead of
5290 mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */
5294 target_mourn_inferior ();
5298 /* Use catch_errors so the user can quit from gdb even when we
5299 aren't on speaking terms with the remote system. */
5300 catch_errors ((catch_errors_ftype
*) putpkt
, "k", "", RETURN_MASK_ERROR
);
5302 /* Don't wait for it to die. I'm not really sure it matters whether
5303 we do or not. For the existing stubs, kill is a noop. */
5304 target_mourn_inferior ();
5310 remote_mourn_1 (&remote_ops
);
5314 remote_async_mourn (void)
5316 remote_mourn_1 (&remote_async_ops
);
5319 /* Worker function for remote_mourn. */
5321 remote_mourn_1 (struct target_ops
*target
)
5323 unpush_target (target
);
5324 generic_mourn_inferior ();
5328 extended_remote_mourn_1 (struct target_ops
*target
)
5330 struct remote_state
*rs
= get_remote_state ();
5332 /* Unlike "target remote", we do not want to unpush the target; then
5333 the next time the user says "run", we won't be connected. */
5335 /* Call common code to mark the inferior as not running. */
5336 generic_mourn_inferior ();
5338 /* Check whether the target is running now - some remote stubs
5339 automatically restart after kill. */
5341 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5343 if (rs
->buf
[0] == 'S' || rs
->buf
[0] == 'T')
5345 /* Assume that the target has been restarted. Set inferior_ptid
5346 so that bits of core GDB realizes there's something here, e.g.,
5347 so that the user can say "kill" again. */
5348 inferior_ptid
= pid_to_ptid (MAGIC_NULL_PID
);
5352 /* Mark this (still pushed) target as not executable until we
5354 target_mark_exited (target
);
5359 extended_remote_mourn (void)
5361 extended_remote_mourn_1 (&extended_remote_ops
);
5365 extended_async_remote_mourn (void)
5367 extended_remote_mourn_1 (&extended_async_remote_ops
);
5371 extended_remote_run (char *args
)
5373 struct remote_state
*rs
= get_remote_state ();
5377 /* If the user has disabled vRun support, or we have detected that
5378 support is not available, do not try it. */
5379 if (remote_protocol_packets
[PACKET_vRun
].support
== PACKET_DISABLE
)
5382 strcpy (rs
->buf
, "vRun;");
5383 len
= strlen (rs
->buf
);
5385 if (strlen (remote_exec_file
) * 2 + len
>= get_remote_packet_size ())
5386 error (_("Remote file name too long for run packet"));
5387 len
+= 2 * bin2hex ((gdb_byte
*) remote_exec_file
, rs
->buf
+ len
, 0);
5391 struct cleanup
*back_to
;
5395 argv
= buildargv (args
);
5396 back_to
= make_cleanup ((void (*) (void *)) freeargv
, argv
);
5397 for (i
= 0; argv
[i
] != NULL
; i
++)
5399 if (strlen (argv
[i
]) * 2 + 1 + len
>= get_remote_packet_size ())
5400 error (_("Argument list too long for run packet"));
5401 rs
->buf
[len
++] = ';';
5402 len
+= 2 * bin2hex ((gdb_byte
*) argv
[i
], rs
->buf
+ len
, 0);
5404 do_cleanups (back_to
);
5407 rs
->buf
[len
++] = '\0';
5410 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5412 if (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_vRun
]) == PACKET_OK
)
5414 /* We have a wait response; we don't need it, though. All is well. */
5417 else if (remote_protocol_packets
[PACKET_vRun
].support
== PACKET_DISABLE
)
5418 /* It wasn't disabled before, but it is now. */
5422 if (remote_exec_file
[0] == '\0')
5423 error (_("Running the default executable on the remote target failed; "
5424 "try \"set remote exec-file\"?"));
5426 error (_("Running \"%s\" on the remote target failed"),
5431 /* In the extended protocol we want to be able to do things like
5432 "run" and have them basically work as expected. So we need
5433 a special create_inferior function. We support changing the
5434 executable file and the command line arguments, but not the
5438 extended_remote_create_inferior_1 (char *exec_file
, char *args
,
5439 char **env
, int from_tty
,
5442 /* If running asynchronously, register the target file descriptor
5443 with the event loop. */
5444 if (async_p
&& target_can_async_p ())
5445 target_async (inferior_event_handler
, 0);
5447 /* Now restart the remote server. */
5448 if (extended_remote_run (args
) == -1)
5450 /* vRun was not supported. Fail if we need it to do what the
5452 if (remote_exec_file
[0])
5453 error (_("Remote target does not support \"set remote exec-file\""));
5455 error (_("Remote target does not support \"set args\" or run <ARGS>"));
5457 /* Fall back to "R". */
5458 extended_remote_restart ();
5461 /* Now mark the inferior as running before we do anything else. */
5463 inferior_ptid
= pid_to_ptid (MAGIC_NULL_PID
);
5465 target_mark_running (&extended_async_remote_ops
);
5467 target_mark_running (&extended_remote_ops
);
5469 /* Get updated offsets, if the stub uses qOffsets. */
5472 /* Clean up from the last time we were running. */
5473 init_thread_list ();
5474 init_wait_for_inferior ();
5478 extended_remote_create_inferior (char *exec_file
, char *args
,
5479 char **env
, int from_tty
)
5481 extended_remote_create_inferior_1 (exec_file
, args
, env
, from_tty
, 0);
5485 extended_remote_async_create_inferior (char *exec_file
, char *args
,
5486 char **env
, int from_tty
)
5488 extended_remote_create_inferior_1 (exec_file
, args
, env
, from_tty
, 1);
5492 /* Insert a breakpoint. On targets that have software breakpoint
5493 support, we ask the remote target to do the work; on targets
5494 which don't, we insert a traditional memory breakpoint. */
5497 remote_insert_breakpoint (struct bp_target_info
*bp_tgt
)
5499 /* Try the "Z" s/w breakpoint packet if it is not already disabled.
5500 If it succeeds, then set the support to PACKET_ENABLE. If it
5501 fails, and the user has explicitly requested the Z support then
5502 report an error, otherwise, mark it disabled and go on. */
5504 if (remote_protocol_packets
[PACKET_Z0
].support
!= PACKET_DISABLE
)
5507 struct remote_state
*rs
;
5510 gdbarch_breakpoint_from_pc
5511 (current_gdbarch
, &bp_tgt
->placed_address
, &bp_tgt
->placed_size
);
5513 rs
= get_remote_state ();
5519 addr
= (ULONGEST
) remote_address_masked (bp_tgt
->placed_address
);
5520 p
+= hexnumstr (p
, addr
);
5521 sprintf (p
, ",%d", bp_tgt
->placed_size
);
5524 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5526 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
]))
5532 case PACKET_UNKNOWN
:
5537 return memory_insert_breakpoint (bp_tgt
);
5541 remote_remove_breakpoint (struct bp_target_info
*bp_tgt
)
5543 CORE_ADDR addr
= bp_tgt
->placed_address
;
5544 struct remote_state
*rs
= get_remote_state ();
5547 if (remote_protocol_packets
[PACKET_Z0
].support
!= PACKET_DISABLE
)
5555 addr
= (ULONGEST
) remote_address_masked (bp_tgt
->placed_address
);
5556 p
+= hexnumstr (p
, addr
);
5557 sprintf (p
, ",%d", bp_tgt
->placed_size
);
5560 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5562 return (rs
->buf
[0] == 'E');
5565 return memory_remove_breakpoint (bp_tgt
);
5569 watchpoint_to_Z_packet (int type
)
5574 return Z_PACKET_WRITE_WP
;
5577 return Z_PACKET_READ_WP
;
5580 return Z_PACKET_ACCESS_WP
;
5583 internal_error (__FILE__
, __LINE__
,
5584 _("hw_bp_to_z: bad watchpoint type %d"), type
);
5589 remote_insert_watchpoint (CORE_ADDR addr
, int len
, int type
)
5591 struct remote_state
*rs
= get_remote_state ();
5593 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
5595 if (remote_protocol_packets
[PACKET_Z0
+ packet
].support
== PACKET_DISABLE
)
5598 sprintf (rs
->buf
, "Z%x,", packet
);
5599 p
= strchr (rs
->buf
, '\0');
5600 addr
= remote_address_masked (addr
);
5601 p
+= hexnumstr (p
, (ULONGEST
) addr
);
5602 sprintf (p
, ",%x", len
);
5605 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5607 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
+ packet
]))
5610 case PACKET_UNKNOWN
:
5615 internal_error (__FILE__
, __LINE__
,
5616 _("remote_insert_watchpoint: reached end of function"));
5621 remote_remove_watchpoint (CORE_ADDR addr
, int len
, int type
)
5623 struct remote_state
*rs
= get_remote_state ();
5625 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
5627 if (remote_protocol_packets
[PACKET_Z0
+ packet
].support
== PACKET_DISABLE
)
5630 sprintf (rs
->buf
, "z%x,", packet
);
5631 p
= strchr (rs
->buf
, '\0');
5632 addr
= remote_address_masked (addr
);
5633 p
+= hexnumstr (p
, (ULONGEST
) addr
);
5634 sprintf (p
, ",%x", len
);
5636 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5638 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
+ packet
]))
5641 case PACKET_UNKNOWN
:
5646 internal_error (__FILE__
, __LINE__
,
5647 _("remote_remove_watchpoint: reached end of function"));
5651 int remote_hw_watchpoint_limit
= -1;
5652 int remote_hw_breakpoint_limit
= -1;
5655 remote_check_watch_resources (int type
, int cnt
, int ot
)
5657 if (type
== bp_hardware_breakpoint
)
5659 if (remote_hw_breakpoint_limit
== 0)
5661 else if (remote_hw_breakpoint_limit
< 0)
5663 else if (cnt
<= remote_hw_breakpoint_limit
)
5668 if (remote_hw_watchpoint_limit
== 0)
5670 else if (remote_hw_watchpoint_limit
< 0)
5674 else if (cnt
<= remote_hw_watchpoint_limit
)
5681 remote_stopped_by_watchpoint (void)
5683 return remote_stopped_by_watchpoint_p
;
5687 remote_stopped_data_address (struct target_ops
*target
, CORE_ADDR
*addr_p
)
5690 if (remote_stopped_by_watchpoint ())
5692 *addr_p
= remote_watch_data_address
;
5701 remote_insert_hw_breakpoint (struct bp_target_info
*bp_tgt
)
5704 struct remote_state
*rs
;
5707 /* The length field should be set to the size of a breakpoint
5708 instruction, even though we aren't inserting one ourselves. */
5710 gdbarch_breakpoint_from_pc
5711 (current_gdbarch
, &bp_tgt
->placed_address
, &bp_tgt
->placed_size
);
5713 if (remote_protocol_packets
[PACKET_Z1
].support
== PACKET_DISABLE
)
5716 rs
= get_remote_state ();
5723 addr
= remote_address_masked (bp_tgt
->placed_address
);
5724 p
+= hexnumstr (p
, (ULONGEST
) addr
);
5725 sprintf (p
, ",%x", bp_tgt
->placed_size
);
5728 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5730 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z1
]))
5733 case PACKET_UNKNOWN
:
5738 internal_error (__FILE__
, __LINE__
,
5739 _("remote_insert_hw_breakpoint: reached end of function"));
5744 remote_remove_hw_breakpoint (struct bp_target_info
*bp_tgt
)
5747 struct remote_state
*rs
= get_remote_state ();
5750 if (remote_protocol_packets
[PACKET_Z1
].support
== PACKET_DISABLE
)
5757 addr
= remote_address_masked (bp_tgt
->placed_address
);
5758 p
+= hexnumstr (p
, (ULONGEST
) addr
);
5759 sprintf (p
, ",%x", bp_tgt
->placed_size
);
5762 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5764 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z1
]))
5767 case PACKET_UNKNOWN
:
5772 internal_error (__FILE__
, __LINE__
,
5773 _("remote_remove_hw_breakpoint: reached end of function"));
5776 /* Some targets are only capable of doing downloads, and afterwards
5777 they switch to the remote serial protocol. This function provides
5778 a clean way to get from the download target to the remote target.
5779 It's basically just a wrapper so that we don't have to expose any
5780 of the internal workings of remote.c.
5782 Prior to calling this routine, you should shutdown the current
5783 target code, else you will get the "A program is being debugged
5784 already..." message. Usually a call to pop_target() suffices. */
5787 push_remote_target (char *name
, int from_tty
)
5789 printf_filtered (_("Switching to remote protocol\n"));
5790 remote_open (name
, from_tty
);
5793 /* Table used by the crc32 function to calcuate the checksum. */
5795 static unsigned long crc32_table
[256] =
5798 static unsigned long
5799 crc32 (unsigned char *buf
, int len
, unsigned int crc
)
5801 if (!crc32_table
[1])
5803 /* Initialize the CRC table and the decoding table. */
5807 for (i
= 0; i
< 256; i
++)
5809 for (c
= i
<< 24, j
= 8; j
> 0; --j
)
5810 c
= c
& 0x80000000 ? (c
<< 1) ^ 0x04c11db7 : (c
<< 1);
5817 crc
= (crc
<< 8) ^ crc32_table
[((crc
>> 24) ^ *buf
) & 255];
5823 /* compare-sections command
5825 With no arguments, compares each loadable section in the exec bfd
5826 with the same memory range on the target, and reports mismatches.
5827 Useful for verifying the image on the target against the exec file.
5828 Depends on the target understanding the new "qCRC:" request. */
5830 /* FIXME: cagney/1999-10-26: This command should be broken down into a
5831 target method (target verify memory) and generic version of the
5832 actual command. This will allow other high-level code (especially
5833 generic_load()) to make use of this target functionality. */
5836 compare_sections_command (char *args
, int from_tty
)
5838 struct remote_state
*rs
= get_remote_state ();
5840 unsigned long host_crc
, target_crc
;
5841 extern bfd
*exec_bfd
;
5842 struct cleanup
*old_chain
;
5845 const char *sectname
;
5852 error (_("command cannot be used without an exec file"));
5853 if (!current_target
.to_shortname
||
5854 strcmp (current_target
.to_shortname
, "remote") != 0)
5855 error (_("command can only be used with remote target"));
5857 for (s
= exec_bfd
->sections
; s
; s
= s
->next
)
5859 if (!(s
->flags
& SEC_LOAD
))
5860 continue; /* skip non-loadable section */
5862 size
= bfd_get_section_size (s
);
5864 continue; /* skip zero-length section */
5866 sectname
= bfd_get_section_name (exec_bfd
, s
);
5867 if (args
&& strcmp (args
, sectname
) != 0)
5868 continue; /* not the section selected by user */
5870 matched
= 1; /* do this section */
5872 /* FIXME: assumes lma can fit into long. */
5873 xsnprintf (rs
->buf
, get_remote_packet_size (), "qCRC:%lx,%lx",
5874 (long) lma
, (long) size
);
5877 /* Be clever; compute the host_crc before waiting for target
5879 sectdata
= xmalloc (size
);
5880 old_chain
= make_cleanup (xfree
, sectdata
);
5881 bfd_get_section_contents (exec_bfd
, s
, sectdata
, 0, size
);
5882 host_crc
= crc32 ((unsigned char *) sectdata
, size
, 0xffffffff);
5884 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5885 if (rs
->buf
[0] == 'E')
5886 error (_("target memory fault, section %s, range 0x%s -- 0x%s"),
5887 sectname
, paddr (lma
), paddr (lma
+ size
));
5888 if (rs
->buf
[0] != 'C')
5889 error (_("remote target does not support this operation"));
5891 for (target_crc
= 0, tmp
= &rs
->buf
[1]; *tmp
; tmp
++)
5892 target_crc
= target_crc
* 16 + fromhex (*tmp
);
5894 printf_filtered ("Section %s, range 0x%s -- 0x%s: ",
5895 sectname
, paddr (lma
), paddr (lma
+ size
));
5896 if (host_crc
== target_crc
)
5897 printf_filtered ("matched.\n");
5900 printf_filtered ("MIS-MATCHED!\n");
5904 do_cleanups (old_chain
);
5907 warning (_("One or more sections of the remote executable does not match\n\
5908 the loaded file\n"));
5909 if (args
&& !matched
)
5910 printf_filtered (_("No loaded section named '%s'.\n"), args
);
5913 /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET
5914 into remote target. The number of bytes written to the remote
5915 target is returned, or -1 for error. */
5918 remote_write_qxfer (struct target_ops
*ops
, const char *object_name
,
5919 const char *annex
, const gdb_byte
*writebuf
,
5920 ULONGEST offset
, LONGEST len
,
5921 struct packet_config
*packet
)
5926 struct remote_state
*rs
= get_remote_state ();
5927 int max_size
= get_memory_write_packet_size ();
5929 if (packet
->support
== PACKET_DISABLE
)
5932 /* Insert header. */
5933 i
= snprintf (rs
->buf
, max_size
,
5934 "qXfer:%s:write:%s:%s:",
5935 object_name
, annex
? annex
: "",
5936 phex_nz (offset
, sizeof offset
));
5937 max_size
-= (i
+ 1);
5939 /* Escape as much data as fits into rs->buf. */
5940 buf_len
= remote_escape_output
5941 (writebuf
, len
, (rs
->buf
+ i
), &max_size
, max_size
);
5943 if (putpkt_binary (rs
->buf
, i
+ buf_len
) < 0
5944 || getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) < 0
5945 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
5948 unpack_varlen_hex (rs
->buf
, &n
);
5952 /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet.
5953 Data at OFFSET, of up to LEN bytes, is read into READBUF; the
5954 number of bytes read is returned, or 0 for EOF, or -1 for error.
5955 The number of bytes read may be less than LEN without indicating an
5956 EOF. PACKET is checked and updated to indicate whether the remote
5957 target supports this object. */
5960 remote_read_qxfer (struct target_ops
*ops
, const char *object_name
,
5962 gdb_byte
*readbuf
, ULONGEST offset
, LONGEST len
,
5963 struct packet_config
*packet
)
5965 static char *finished_object
;
5966 static char *finished_annex
;
5967 static ULONGEST finished_offset
;
5969 struct remote_state
*rs
= get_remote_state ();
5970 unsigned int total
= 0;
5971 LONGEST i
, n
, packet_len
;
5973 if (packet
->support
== PACKET_DISABLE
)
5976 /* Check whether we've cached an end-of-object packet that matches
5978 if (finished_object
)
5980 if (strcmp (object_name
, finished_object
) == 0
5981 && strcmp (annex
? annex
: "", finished_annex
) == 0
5982 && offset
== finished_offset
)
5985 /* Otherwise, we're now reading something different. Discard
5987 xfree (finished_object
);
5988 xfree (finished_annex
);
5989 finished_object
= NULL
;
5990 finished_annex
= NULL
;
5993 /* Request only enough to fit in a single packet. The actual data
5994 may not, since we don't know how much of it will need to be escaped;
5995 the target is free to respond with slightly less data. We subtract
5996 five to account for the response type and the protocol frame. */
5997 n
= min (get_remote_packet_size () - 5, len
);
5998 snprintf (rs
->buf
, get_remote_packet_size () - 4, "qXfer:%s:read:%s:%s,%s",
5999 object_name
, annex
? annex
: "",
6000 phex_nz (offset
, sizeof offset
),
6001 phex_nz (n
, sizeof n
));
6002 i
= putpkt (rs
->buf
);
6007 packet_len
= getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0);
6008 if (packet_len
< 0 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
6011 if (rs
->buf
[0] != 'l' && rs
->buf
[0] != 'm')
6012 error (_("Unknown remote qXfer reply: %s"), rs
->buf
);
6014 /* 'm' means there is (or at least might be) more data after this
6015 batch. That does not make sense unless there's at least one byte
6016 of data in this reply. */
6017 if (rs
->buf
[0] == 'm' && packet_len
== 1)
6018 error (_("Remote qXfer reply contained no data."));
6020 /* Got some data. */
6021 i
= remote_unescape_input (rs
->buf
+ 1, packet_len
- 1, readbuf
, n
);
6023 /* 'l' is an EOF marker, possibly including a final block of data,
6024 or possibly empty. If we have the final block of a non-empty
6025 object, record this fact to bypass a subsequent partial read. */
6026 if (rs
->buf
[0] == 'l' && offset
+ i
> 0)
6028 finished_object
= xstrdup (object_name
);
6029 finished_annex
= xstrdup (annex
? annex
: "");
6030 finished_offset
= offset
+ i
;
6037 remote_xfer_partial (struct target_ops
*ops
, enum target_object object
,
6038 const char *annex
, gdb_byte
*readbuf
,
6039 const gdb_byte
*writebuf
, ULONGEST offset
, LONGEST len
)
6041 struct remote_state
*rs
= get_remote_state ();
6046 /* Handle memory using the standard memory routines. */
6047 if (object
== TARGET_OBJECT_MEMORY
)
6052 /* If the remote target is connected but not running, we should
6053 pass this request down to a lower stratum (e.g. the executable
6055 if (!target_has_execution
)
6058 if (writebuf
!= NULL
)
6059 xfered
= remote_write_bytes (offset
, writebuf
, len
);
6061 xfered
= remote_read_bytes (offset
, readbuf
, len
);
6065 else if (xfered
== 0 && errno
== 0)
6071 /* Handle SPU memory using qxfer packets. */
6072 if (object
== TARGET_OBJECT_SPU
)
6075 return remote_read_qxfer (ops
, "spu", annex
, readbuf
, offset
, len
,
6076 &remote_protocol_packets
6077 [PACKET_qXfer_spu_read
]);
6079 return remote_write_qxfer (ops
, "spu", annex
, writebuf
, offset
, len
,
6080 &remote_protocol_packets
6081 [PACKET_qXfer_spu_write
]);
6084 /* Only handle flash writes. */
6085 if (writebuf
!= NULL
)
6091 case TARGET_OBJECT_FLASH
:
6092 xfered
= remote_flash_write (ops
, offset
, len
, writebuf
);
6096 else if (xfered
== 0 && errno
== 0)
6106 /* Map pre-existing objects onto letters. DO NOT do this for new
6107 objects!!! Instead specify new query packets. */
6110 case TARGET_OBJECT_AVR
:
6114 case TARGET_OBJECT_AUXV
:
6115 gdb_assert (annex
== NULL
);
6116 return remote_read_qxfer (ops
, "auxv", annex
, readbuf
, offset
, len
,
6117 &remote_protocol_packets
[PACKET_qXfer_auxv
]);
6119 case TARGET_OBJECT_AVAILABLE_FEATURES
:
6120 return remote_read_qxfer
6121 (ops
, "features", annex
, readbuf
, offset
, len
,
6122 &remote_protocol_packets
[PACKET_qXfer_features
]);
6124 case TARGET_OBJECT_LIBRARIES
:
6125 return remote_read_qxfer
6126 (ops
, "libraries", annex
, readbuf
, offset
, len
,
6127 &remote_protocol_packets
[PACKET_qXfer_libraries
]);
6129 case TARGET_OBJECT_MEMORY_MAP
:
6130 gdb_assert (annex
== NULL
);
6131 return remote_read_qxfer (ops
, "memory-map", annex
, readbuf
, offset
, len
,
6132 &remote_protocol_packets
[PACKET_qXfer_memory_map
]);
6138 /* Note: a zero OFFSET and LEN can be used to query the minimum
6140 if (offset
== 0 && len
== 0)
6141 return (get_remote_packet_size ());
6142 /* Minimum outbuf size is get_remote_packet_size (). If LEN is not
6143 large enough let the caller deal with it. */
6144 if (len
< get_remote_packet_size ())
6146 len
= get_remote_packet_size ();
6148 /* Except for querying the minimum buffer size, target must be open. */
6150 error (_("remote query is only available after target open"));
6152 gdb_assert (annex
!= NULL
);
6153 gdb_assert (readbuf
!= NULL
);
6159 /* We used one buffer char for the remote protocol q command and
6160 another for the query type. As the remote protocol encapsulation
6161 uses 4 chars plus one extra in case we are debugging
6162 (remote_debug), we have PBUFZIZ - 7 left to pack the query
6165 while (annex
[i
] && (i
< (get_remote_packet_size () - 8)))
6167 /* Bad caller may have sent forbidden characters. */
6168 gdb_assert (isprint (annex
[i
]) && annex
[i
] != '$' && annex
[i
] != '#');
6173 gdb_assert (annex
[i
] == '\0');
6175 i
= putpkt (rs
->buf
);
6179 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6180 strcpy ((char *) readbuf
, rs
->buf
);
6182 return strlen ((char *) readbuf
);
6186 remote_rcmd (char *command
,
6187 struct ui_file
*outbuf
)
6189 struct remote_state
*rs
= get_remote_state ();
6193 error (_("remote rcmd is only available after target open"));
6195 /* Send a NULL command across as an empty command. */
6196 if (command
== NULL
)
6199 /* The query prefix. */
6200 strcpy (rs
->buf
, "qRcmd,");
6201 p
= strchr (rs
->buf
, '\0');
6203 if ((strlen (rs
->buf
) + strlen (command
) * 2 + 8/*misc*/) > get_remote_packet_size ())
6204 error (_("\"monitor\" command ``%s'' is too long."), command
);
6206 /* Encode the actual command. */
6207 bin2hex ((gdb_byte
*) command
, p
, 0);
6209 if (putpkt (rs
->buf
) < 0)
6210 error (_("Communication problem with target."));
6212 /* get/display the response */
6217 /* XXX - see also tracepoint.c:remote_get_noisy_reply(). */
6219 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6222 error (_("Target does not support this command."));
6223 if (buf
[0] == 'O' && buf
[1] != 'K')
6225 remote_console_output (buf
+ 1); /* 'O' message from stub. */
6228 if (strcmp (buf
, "OK") == 0)
6230 if (strlen (buf
) == 3 && buf
[0] == 'E'
6231 && isdigit (buf
[1]) && isdigit (buf
[2]))
6233 error (_("Protocol error with Rcmd"));
6235 for (p
= buf
; p
[0] != '\0' && p
[1] != '\0'; p
+= 2)
6237 char c
= (fromhex (p
[0]) << 4) + fromhex (p
[1]);
6238 fputc_unfiltered (c
, outbuf
);
6244 static VEC(mem_region_s
) *
6245 remote_memory_map (struct target_ops
*ops
)
6247 VEC(mem_region_s
) *result
= NULL
;
6248 char *text
= target_read_stralloc (¤t_target
,
6249 TARGET_OBJECT_MEMORY_MAP
, NULL
);
6253 struct cleanup
*back_to
= make_cleanup (xfree
, text
);
6254 result
= parse_memory_map (text
);
6255 do_cleanups (back_to
);
6262 packet_command (char *args
, int from_tty
)
6264 struct remote_state
*rs
= get_remote_state ();
6267 error (_("command can only be used with remote target"));
6270 error (_("remote-packet command requires packet text as argument"));
6272 puts_filtered ("sending: ");
6273 print_packet (args
);
6274 puts_filtered ("\n");
6277 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6278 puts_filtered ("received: ");
6279 print_packet (rs
->buf
);
6280 puts_filtered ("\n");
6284 /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */
6286 static void display_thread_info (struct gdb_ext_thread_info
*info
);
6288 static void threadset_test_cmd (char *cmd
, int tty
);
6290 static void threadalive_test (char *cmd
, int tty
);
6292 static void threadlist_test_cmd (char *cmd
, int tty
);
6294 int get_and_display_threadinfo (threadref
*ref
);
6296 static void threadinfo_test_cmd (char *cmd
, int tty
);
6298 static int thread_display_step (threadref
*ref
, void *context
);
6300 static void threadlist_update_test_cmd (char *cmd
, int tty
);
6302 static void init_remote_threadtests (void);
6304 #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */
6307 threadset_test_cmd (char *cmd
, int tty
)
6309 int sample_thread
= SAMPLE_THREAD
;
6311 printf_filtered (_("Remote threadset test\n"));
6312 set_thread (sample_thread
, 1);
6317 threadalive_test (char *cmd
, int tty
)
6319 int sample_thread
= SAMPLE_THREAD
;
6321 if (remote_thread_alive (pid_to_ptid (sample_thread
)))
6322 printf_filtered ("PASS: Thread alive test\n");
6324 printf_filtered ("FAIL: Thread alive test\n");
6327 void output_threadid (char *title
, threadref
*ref
);
6330 output_threadid (char *title
, threadref
*ref
)
6334 pack_threadid (&hexid
[0], ref
); /* Convert threead id into hex. */
6336 printf_filtered ("%s %s\n", title
, (&hexid
[0]));
6340 threadlist_test_cmd (char *cmd
, int tty
)
6343 threadref nextthread
;
6344 int done
, result_count
;
6345 threadref threadlist
[3];
6347 printf_filtered ("Remote Threadlist test\n");
6348 if (!remote_get_threadlist (startflag
, &nextthread
, 3, &done
,
6349 &result_count
, &threadlist
[0]))
6350 printf_filtered ("FAIL: threadlist test\n");
6353 threadref
*scan
= threadlist
;
6354 threadref
*limit
= scan
+ result_count
;
6356 while (scan
< limit
)
6357 output_threadid (" thread ", scan
++);
6362 display_thread_info (struct gdb_ext_thread_info
*info
)
6364 output_threadid ("Threadid: ", &info
->threadid
);
6365 printf_filtered ("Name: %s\n ", info
->shortname
);
6366 printf_filtered ("State: %s\n", info
->display
);
6367 printf_filtered ("other: %s\n\n", info
->more_display
);
6371 get_and_display_threadinfo (threadref
*ref
)
6375 struct gdb_ext_thread_info threadinfo
;
6377 set
= TAG_THREADID
| TAG_EXISTS
| TAG_THREADNAME
6378 | TAG_MOREDISPLAY
| TAG_DISPLAY
;
6379 if (0 != (result
= remote_get_threadinfo (ref
, set
, &threadinfo
)))
6380 display_thread_info (&threadinfo
);
6385 threadinfo_test_cmd (char *cmd
, int tty
)
6387 int athread
= SAMPLE_THREAD
;
6391 int_to_threadref (&thread
, athread
);
6392 printf_filtered ("Remote Threadinfo test\n");
6393 if (!get_and_display_threadinfo (&thread
))
6394 printf_filtered ("FAIL cannot get thread info\n");
6398 thread_display_step (threadref
*ref
, void *context
)
6400 /* output_threadid(" threadstep ",ref); *//* simple test */
6401 return get_and_display_threadinfo (ref
);
6405 threadlist_update_test_cmd (char *cmd
, int tty
)
6407 printf_filtered ("Remote Threadlist update test\n");
6408 remote_threadlist_iterator (thread_display_step
, 0, CRAZY_MAX_THREADS
);
6412 init_remote_threadtests (void)
6414 add_com ("tlist", class_obscure
, threadlist_test_cmd
, _("\
6415 Fetch and print the remote list of thread identifiers, one pkt only"));
6416 add_com ("tinfo", class_obscure
, threadinfo_test_cmd
,
6417 _("Fetch and display info about one thread"));
6418 add_com ("tset", class_obscure
, threadset_test_cmd
,
6419 _("Test setting to a different thread"));
6420 add_com ("tupd", class_obscure
, threadlist_update_test_cmd
,
6421 _("Iterate through updating all remote thread info"));
6422 add_com ("talive", class_obscure
, threadalive_test
,
6423 _(" Remote thread alive test "));
6428 /* Convert a thread ID to a string. Returns the string in a static
6432 remote_pid_to_str (ptid_t ptid
)
6434 static char buf
[32];
6436 xsnprintf (buf
, sizeof buf
, "Thread %d", ptid_get_pid (ptid
));
6440 /* Get the address of the thread local variable in OBJFILE which is
6441 stored at OFFSET within the thread local storage for thread PTID. */
6444 remote_get_thread_local_address (ptid_t ptid
, CORE_ADDR lm
, CORE_ADDR offset
)
6446 if (remote_protocol_packets
[PACKET_qGetTLSAddr
].support
!= PACKET_DISABLE
)
6448 struct remote_state
*rs
= get_remote_state ();
6450 enum packet_result result
;
6452 strcpy (p
, "qGetTLSAddr:");
6454 p
+= hexnumstr (p
, PIDGET (ptid
));
6456 p
+= hexnumstr (p
, offset
);
6458 p
+= hexnumstr (p
, lm
);
6462 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6463 result
= packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_qGetTLSAddr
]);
6464 if (result
== PACKET_OK
)
6468 unpack_varlen_hex (rs
->buf
, &result
);
6471 else if (result
== PACKET_UNKNOWN
)
6472 throw_error (TLS_GENERIC_ERROR
,
6473 _("Remote target doesn't support qGetTLSAddr packet"));
6475 throw_error (TLS_GENERIC_ERROR
,
6476 _("Remote target failed to process qGetTLSAddr request"));
6479 throw_error (TLS_GENERIC_ERROR
,
6480 _("TLS not supported or disabled on this target"));
6485 /* Support for inferring a target description based on the current
6486 architecture and the size of a 'g' packet. While the 'g' packet
6487 can have any size (since optional registers can be left off the
6488 end), some sizes are easily recognizable given knowledge of the
6489 approximate architecture. */
6491 struct remote_g_packet_guess
6494 const struct target_desc
*tdesc
;
6496 typedef struct remote_g_packet_guess remote_g_packet_guess_s
;
6497 DEF_VEC_O(remote_g_packet_guess_s
);
6499 struct remote_g_packet_data
6501 VEC(remote_g_packet_guess_s
) *guesses
;
6504 static struct gdbarch_data
*remote_g_packet_data_handle
;
6507 remote_g_packet_data_init (struct obstack
*obstack
)
6509 return OBSTACK_ZALLOC (obstack
, struct remote_g_packet_data
);
6513 register_remote_g_packet_guess (struct gdbarch
*gdbarch
, int bytes
,
6514 const struct target_desc
*tdesc
)
6516 struct remote_g_packet_data
*data
6517 = gdbarch_data (gdbarch
, remote_g_packet_data_handle
);
6518 struct remote_g_packet_guess new_guess
, *guess
;
6521 gdb_assert (tdesc
!= NULL
);
6524 VEC_iterate (remote_g_packet_guess_s
, data
->guesses
, ix
, guess
);
6526 if (guess
->bytes
== bytes
)
6527 internal_error (__FILE__
, __LINE__
,
6528 "Duplicate g packet description added for size %d",
6531 new_guess
.bytes
= bytes
;
6532 new_guess
.tdesc
= tdesc
;
6533 VEC_safe_push (remote_g_packet_guess_s
, data
->guesses
, &new_guess
);
6536 static const struct target_desc
*
6537 remote_read_description (struct target_ops
*target
)
6539 struct remote_g_packet_data
*data
6540 = gdbarch_data (current_gdbarch
, remote_g_packet_data_handle
);
6542 if (!VEC_empty (remote_g_packet_guess_s
, data
->guesses
))
6544 struct remote_g_packet_guess
*guess
;
6546 int bytes
= send_g_packet ();
6549 VEC_iterate (remote_g_packet_guess_s
, data
->guesses
, ix
, guess
);
6551 if (guess
->bytes
== bytes
)
6552 return guess
->tdesc
;
6554 /* We discard the g packet. A minor optimization would be to
6555 hold on to it, and fill the register cache once we have selected
6556 an architecture, but it's too tricky to do safely. */
6562 /* Remote file transfer support. This is host-initiated I/O, not
6563 target-initiated; for target-initiated, see remote-fileio.c. */
6565 /* If *LEFT is at least the length of STRING, copy STRING to
6566 *BUFFER, update *BUFFER to point to the new end of the buffer, and
6567 decrease *LEFT. Otherwise raise an error. */
6570 remote_buffer_add_string (char **buffer
, int *left
, char *string
)
6572 int len
= strlen (string
);
6575 error (_("Packet too long for target."));
6577 memcpy (*buffer
, string
, len
);
6581 /* NUL-terminate the buffer as a convenience, if there is
6587 /* If *LEFT is large enough, hex encode LEN bytes from BYTES into
6588 *BUFFER, update *BUFFER to point to the new end of the buffer, and
6589 decrease *LEFT. Otherwise raise an error. */
6592 remote_buffer_add_bytes (char **buffer
, int *left
, const gdb_byte
*bytes
,
6595 if (2 * len
> *left
)
6596 error (_("Packet too long for target."));
6598 bin2hex (bytes
, *buffer
, len
);
6602 /* NUL-terminate the buffer as a convenience, if there is
6608 /* If *LEFT is large enough, convert VALUE to hex and add it to
6609 *BUFFER, update *BUFFER to point to the new end of the buffer, and
6610 decrease *LEFT. Otherwise raise an error. */
6613 remote_buffer_add_int (char **buffer
, int *left
, ULONGEST value
)
6615 int len
= hexnumlen (value
);
6618 error (_("Packet too long for target."));
6620 hexnumstr (*buffer
, value
);
6624 /* NUL-terminate the buffer as a convenience, if there is
6630 /* Parse an I/O result packet from BUFFER. Set RETCODE to the return
6631 value, *REMOTE_ERRNO to the remote error number or zero if none
6632 was included, and *ATTACHMENT to point to the start of the annex
6633 if any. The length of the packet isn't needed here; there may
6634 be NUL bytes in BUFFER, but they will be after *ATTACHMENT.
6636 Return 0 if the packet could be parsed, -1 if it could not. If
6637 -1 is returned, the other variables may not be initialized. */
6640 remote_hostio_parse_result (char *buffer
, int *retcode
,
6641 int *remote_errno
, char **attachment
)
6648 if (buffer
[0] != 'F')
6652 *retcode
= strtol (&buffer
[1], &p
, 16);
6653 if (errno
!= 0 || p
== &buffer
[1])
6656 /* Check for ",errno". */
6660 *remote_errno
= strtol (p
+ 1, &p2
, 16);
6661 if (errno
!= 0 || p
+ 1 == p2
)
6666 /* Check for ";attachment". If there is no attachment, the
6667 packet should end here. */
6670 *attachment
= p
+ 1;
6673 else if (*p
== '\0')
6679 /* Send a prepared I/O packet to the target and read its response.
6680 The prepared packet is in the global RS->BUF before this function
6681 is called, and the answer is there when we return.
6683 COMMAND_BYTES is the length of the request to send, which may include
6684 binary data. WHICH_PACKET is the packet configuration to check
6685 before attempting a packet. If an error occurs, *REMOTE_ERRNO
6686 is set to the error number and -1 is returned. Otherwise the value
6687 returned by the function is returned.
6689 ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an
6690 attachment is expected; an error will be reported if there's a
6691 mismatch. If one is found, *ATTACHMENT will be set to point into
6692 the packet buffer and *ATTACHMENT_LEN will be set to the
6693 attachment's length. */
6696 remote_hostio_send_command (int command_bytes
, int which_packet
,
6697 int *remote_errno
, char **attachment
,
6698 int *attachment_len
)
6700 struct remote_state
*rs
= get_remote_state ();
6701 int ret
, bytes_read
;
6702 char *attachment_tmp
;
6704 if (remote_protocol_packets
[which_packet
].support
== PACKET_DISABLE
)
6706 *remote_errno
= FILEIO_ENOSYS
;
6710 putpkt_binary (rs
->buf
, command_bytes
);
6711 bytes_read
= getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0);
6713 /* If it timed out, something is wrong. Don't try to parse the
6717 *remote_errno
= FILEIO_EINVAL
;
6721 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[which_packet
]))
6724 *remote_errno
= FILEIO_EINVAL
;
6726 case PACKET_UNKNOWN
:
6727 *remote_errno
= FILEIO_ENOSYS
;
6733 if (remote_hostio_parse_result (rs
->buf
, &ret
, remote_errno
,
6736 *remote_errno
= FILEIO_EINVAL
;
6740 /* Make sure we saw an attachment if and only if we expected one. */
6741 if ((attachment_tmp
== NULL
&& attachment
!= NULL
)
6742 || (attachment_tmp
!= NULL
&& attachment
== NULL
))
6744 *remote_errno
= FILEIO_EINVAL
;
6748 /* If an attachment was found, it must point into the packet buffer;
6749 work out how many bytes there were. */
6750 if (attachment_tmp
!= NULL
)
6752 *attachment
= attachment_tmp
;
6753 *attachment_len
= bytes_read
- (*attachment
- rs
->buf
);
6759 /* Open FILENAME on the remote target, using FLAGS and MODE. Return a
6760 remote file descriptor, or -1 if an error occurs (and set
6764 remote_hostio_open (const char *filename
, int flags
, int mode
,
6767 struct remote_state
*rs
= get_remote_state ();
6769 int left
= get_remote_packet_size () - 1;
6771 remote_buffer_add_string (&p
, &left
, "vFile:open:");
6773 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
6775 remote_buffer_add_string (&p
, &left
, ",");
6777 remote_buffer_add_int (&p
, &left
, flags
);
6778 remote_buffer_add_string (&p
, &left
, ",");
6780 remote_buffer_add_int (&p
, &left
, mode
);
6782 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_open
,
6783 remote_errno
, NULL
, NULL
);
6786 /* Write up to LEN bytes from WRITE_BUF to FD on the remote target.
6787 Return the number of bytes written, or -1 if an error occurs (and
6788 set *REMOTE_ERRNO). */
6791 remote_hostio_pwrite (int fd
, const gdb_byte
*write_buf
, int len
,
6792 ULONGEST offset
, int *remote_errno
)
6794 struct remote_state
*rs
= get_remote_state ();
6796 int left
= get_remote_packet_size ();
6799 remote_buffer_add_string (&p
, &left
, "vFile:pwrite:");
6801 remote_buffer_add_int (&p
, &left
, fd
);
6802 remote_buffer_add_string (&p
, &left
, ",");
6804 remote_buffer_add_int (&p
, &left
, offset
);
6805 remote_buffer_add_string (&p
, &left
, ",");
6807 p
+= remote_escape_output (write_buf
, len
, p
, &out_len
,
6808 get_remote_packet_size () - (p
- rs
->buf
));
6810 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_pwrite
,
6811 remote_errno
, NULL
, NULL
);
6814 /* Read up to LEN bytes FD on the remote target into READ_BUF
6815 Return the number of bytes read, or -1 if an error occurs (and
6816 set *REMOTE_ERRNO). */
6819 remote_hostio_pread (int fd
, gdb_byte
*read_buf
, int len
,
6820 ULONGEST offset
, int *remote_errno
)
6822 struct remote_state
*rs
= get_remote_state ();
6825 int left
= get_remote_packet_size ();
6826 int ret
, attachment_len
;
6829 remote_buffer_add_string (&p
, &left
, "vFile:pread:");
6831 remote_buffer_add_int (&p
, &left
, fd
);
6832 remote_buffer_add_string (&p
, &left
, ",");
6834 remote_buffer_add_int (&p
, &left
, len
);
6835 remote_buffer_add_string (&p
, &left
, ",");
6837 remote_buffer_add_int (&p
, &left
, offset
);
6839 ret
= remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_pread
,
6840 remote_errno
, &attachment
,
6846 read_len
= remote_unescape_input (attachment
, attachment_len
,
6848 if (read_len
!= ret
)
6849 error (_("Read returned %d, but %d bytes."), ret
, (int) read_len
);
6854 /* Close FD on the remote target. Return 0, or -1 if an error occurs
6855 (and set *REMOTE_ERRNO). */
6858 remote_hostio_close (int fd
, int *remote_errno
)
6860 struct remote_state
*rs
= get_remote_state ();
6862 int left
= get_remote_packet_size () - 1;
6864 remote_buffer_add_string (&p
, &left
, "vFile:close:");
6866 remote_buffer_add_int (&p
, &left
, fd
);
6868 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_close
,
6869 remote_errno
, NULL
, NULL
);
6872 /* Unlink FILENAME on the remote target. Return 0, or -1 if an error
6873 occurs (and set *REMOTE_ERRNO). */
6876 remote_hostio_unlink (const char *filename
, int *remote_errno
)
6878 struct remote_state
*rs
= get_remote_state ();
6880 int left
= get_remote_packet_size () - 1;
6882 remote_buffer_add_string (&p
, &left
, "vFile:unlink:");
6884 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
6887 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_unlink
,
6888 remote_errno
, NULL
, NULL
);
6892 remote_fileio_errno_to_host (int errnum
)
6916 case FILEIO_ENOTDIR
:
6936 case FILEIO_ENAMETOOLONG
:
6937 return ENAMETOOLONG
;
6943 remote_hostio_error (int errnum
)
6945 int host_error
= remote_fileio_errno_to_host (errnum
);
6947 if (host_error
== -1)
6948 error (_("Unknown remote I/O error %d"), errnum
);
6950 error (_("Remote I/O error: %s"), safe_strerror (host_error
));
6954 fclose_cleanup (void *file
)
6960 remote_hostio_close_cleanup (void *opaque
)
6962 int fd
= *(int *) opaque
;
6965 remote_hostio_close (fd
, &remote_errno
);
6969 remote_file_put (const char *local_file
, const char *remote_file
, int from_tty
)
6971 struct cleanup
*back_to
, *close_cleanup
;
6972 int retcode
, fd
, remote_errno
, bytes
, io_size
;
6975 int bytes_in_buffer
;
6980 error (_("command can only be used with remote target"));
6982 file
= fopen (local_file
, "rb");
6984 perror_with_name (local_file
);
6985 back_to
= make_cleanup (fclose_cleanup
, file
);
6987 fd
= remote_hostio_open (remote_file
, (FILEIO_O_WRONLY
| FILEIO_O_CREAT
6989 0700, &remote_errno
);
6991 remote_hostio_error (remote_errno
);
6993 /* Send up to this many bytes at once. They won't all fit in the
6994 remote packet limit, so we'll transfer slightly fewer. */
6995 io_size
= get_remote_packet_size ();
6996 buffer
= xmalloc (io_size
);
6997 make_cleanup (xfree
, buffer
);
6999 close_cleanup
= make_cleanup (remote_hostio_close_cleanup
, &fd
);
7001 bytes_in_buffer
= 0;
7004 while (bytes_in_buffer
|| !saw_eof
)
7008 bytes
= fread (buffer
+ bytes_in_buffer
, 1, io_size
- bytes_in_buffer
,
7013 error (_("Error reading %s."), local_file
);
7016 /* EOF. Unless there is something still in the
7017 buffer from the last iteration, we are done. */
7019 if (bytes_in_buffer
== 0)
7027 bytes
+= bytes_in_buffer
;
7028 bytes_in_buffer
= 0;
7030 retcode
= remote_hostio_pwrite (fd
, buffer
, bytes
, offset
, &remote_errno
);
7033 remote_hostio_error (remote_errno
);
7034 else if (retcode
== 0)
7035 error (_("Remote write of %d bytes returned 0!"), bytes
);
7036 else if (retcode
< bytes
)
7038 /* Short write. Save the rest of the read data for the next
7040 bytes_in_buffer
= bytes
- retcode
;
7041 memmove (buffer
, buffer
+ retcode
, bytes_in_buffer
);
7047 discard_cleanups (close_cleanup
);
7048 if (remote_hostio_close (fd
, &remote_errno
))
7049 remote_hostio_error (remote_errno
);
7052 printf_filtered (_("Successfully sent file \"%s\".\n"), local_file
);
7053 do_cleanups (back_to
);
7057 remote_file_get (const char *remote_file
, const char *local_file
, int from_tty
)
7059 struct cleanup
*back_to
, *close_cleanup
;
7060 int retcode
, fd
, remote_errno
, bytes
, io_size
;
7066 error (_("command can only be used with remote target"));
7068 fd
= remote_hostio_open (remote_file
, FILEIO_O_RDONLY
, 0, &remote_errno
);
7070 remote_hostio_error (remote_errno
);
7072 file
= fopen (local_file
, "wb");
7074 perror_with_name (local_file
);
7075 back_to
= make_cleanup (fclose_cleanup
, file
);
7077 /* Send up to this many bytes at once. They won't all fit in the
7078 remote packet limit, so we'll transfer slightly fewer. */
7079 io_size
= get_remote_packet_size ();
7080 buffer
= xmalloc (io_size
);
7081 make_cleanup (xfree
, buffer
);
7083 close_cleanup
= make_cleanup (remote_hostio_close_cleanup
, &fd
);
7088 bytes
= remote_hostio_pread (fd
, buffer
, io_size
, offset
, &remote_errno
);
7090 /* Success, but no bytes, means end-of-file. */
7093 remote_hostio_error (remote_errno
);
7097 bytes
= fwrite (buffer
, 1, bytes
, file
);
7099 perror_with_name (local_file
);
7102 discard_cleanups (close_cleanup
);
7103 if (remote_hostio_close (fd
, &remote_errno
))
7104 remote_hostio_error (remote_errno
);
7107 printf_filtered (_("Successfully fetched file \"%s\".\n"), remote_file
);
7108 do_cleanups (back_to
);
7112 remote_file_delete (const char *remote_file
, int from_tty
)
7114 int retcode
, remote_errno
;
7117 error (_("command can only be used with remote target"));
7119 retcode
= remote_hostio_unlink (remote_file
, &remote_errno
);
7121 remote_hostio_error (remote_errno
);
7124 printf_filtered (_("Successfully deleted file \"%s\".\n"), remote_file
);
7128 remote_put_command (char *args
, int from_tty
)
7130 struct cleanup
*back_to
;
7133 argv
= buildargv (args
);
7136 back_to
= make_cleanup_freeargv (argv
);
7137 if (argv
[0] == NULL
|| argv
[1] == NULL
|| argv
[2] != NULL
)
7138 error (_("Invalid parameters to remote put"));
7140 remote_file_put (argv
[0], argv
[1], from_tty
);
7142 do_cleanups (back_to
);
7146 remote_get_command (char *args
, int from_tty
)
7148 struct cleanup
*back_to
;
7151 argv
= buildargv (args
);
7154 back_to
= make_cleanup_freeargv (argv
);
7155 if (argv
[0] == NULL
|| argv
[1] == NULL
|| argv
[2] != NULL
)
7156 error (_("Invalid parameters to remote get"));
7158 remote_file_get (argv
[0], argv
[1], from_tty
);
7160 do_cleanups (back_to
);
7164 remote_delete_command (char *args
, int from_tty
)
7166 struct cleanup
*back_to
;
7169 argv
= buildargv (args
);
7172 back_to
= make_cleanup_freeargv (argv
);
7173 if (argv
[0] == NULL
|| argv
[1] != NULL
)
7174 error (_("Invalid parameters to remote delete"));
7176 remote_file_delete (argv
[0], from_tty
);
7178 do_cleanups (back_to
);
7182 remote_command (char *args
, int from_tty
)
7184 help_list (remote_cmdlist
, "remote ", -1, gdb_stdout
);
7188 remote_return_zero (void)
7194 init_remote_ops (void)
7196 remote_ops
.to_shortname
= "remote";
7197 remote_ops
.to_longname
= "Remote serial target in gdb-specific protocol";
7199 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
7200 Specify the serial device it is connected to\n\
7201 (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).";
7202 remote_ops
.to_open
= remote_open
;
7203 remote_ops
.to_close
= remote_close
;
7204 remote_ops
.to_detach
= remote_detach
;
7205 remote_ops
.to_disconnect
= remote_disconnect
;
7206 remote_ops
.to_resume
= remote_resume
;
7207 remote_ops
.to_wait
= remote_wait
;
7208 remote_ops
.to_fetch_registers
= remote_fetch_registers
;
7209 remote_ops
.to_store_registers
= remote_store_registers
;
7210 remote_ops
.to_prepare_to_store
= remote_prepare_to_store
;
7211 remote_ops
.deprecated_xfer_memory
= remote_xfer_memory
;
7212 remote_ops
.to_files_info
= remote_files_info
;
7213 remote_ops
.to_insert_breakpoint
= remote_insert_breakpoint
;
7214 remote_ops
.to_remove_breakpoint
= remote_remove_breakpoint
;
7215 remote_ops
.to_stopped_by_watchpoint
= remote_stopped_by_watchpoint
;
7216 remote_ops
.to_stopped_data_address
= remote_stopped_data_address
;
7217 remote_ops
.to_can_use_hw_breakpoint
= remote_check_watch_resources
;
7218 remote_ops
.to_insert_hw_breakpoint
= remote_insert_hw_breakpoint
;
7219 remote_ops
.to_remove_hw_breakpoint
= remote_remove_hw_breakpoint
;
7220 remote_ops
.to_insert_watchpoint
= remote_insert_watchpoint
;
7221 remote_ops
.to_remove_watchpoint
= remote_remove_watchpoint
;
7222 remote_ops
.to_kill
= remote_kill
;
7223 remote_ops
.to_load
= generic_load
;
7224 remote_ops
.to_mourn_inferior
= remote_mourn
;
7225 remote_ops
.to_thread_alive
= remote_thread_alive
;
7226 remote_ops
.to_find_new_threads
= remote_threads_info
;
7227 remote_ops
.to_pid_to_str
= remote_pid_to_str
;
7228 remote_ops
.to_extra_thread_info
= remote_threads_extra_info
;
7229 remote_ops
.to_stop
= remote_stop
;
7230 remote_ops
.to_xfer_partial
= remote_xfer_partial
;
7231 remote_ops
.to_rcmd
= remote_rcmd
;
7232 remote_ops
.to_log_command
= serial_log_command
;
7233 remote_ops
.to_get_thread_local_address
= remote_get_thread_local_address
;
7234 remote_ops
.to_stratum
= process_stratum
;
7235 remote_ops
.to_has_all_memory
= 1;
7236 remote_ops
.to_has_memory
= 1;
7237 remote_ops
.to_has_stack
= 1;
7238 remote_ops
.to_has_registers
= 1;
7239 remote_ops
.to_has_execution
= 1;
7240 remote_ops
.to_has_thread_control
= tc_schedlock
; /* can lock scheduler */
7241 remote_ops
.to_magic
= OPS_MAGIC
;
7242 remote_ops
.to_memory_map
= remote_memory_map
;
7243 remote_ops
.to_flash_erase
= remote_flash_erase
;
7244 remote_ops
.to_flash_done
= remote_flash_done
;
7245 remote_ops
.to_read_description
= remote_read_description
;
7246 remote_ops
.to_can_async_p
= remote_return_zero
;
7247 remote_ops
.to_is_async_p
= remote_return_zero
;
7250 /* Set up the extended remote vector by making a copy of the standard
7251 remote vector and adding to it. */
7254 init_extended_remote_ops (void)
7256 extended_remote_ops
= remote_ops
;
7258 extended_remote_ops
.to_shortname
= "extended-remote";
7259 extended_remote_ops
.to_longname
=
7260 "Extended remote serial target in gdb-specific protocol";
7261 extended_remote_ops
.to_doc
=
7262 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
7263 Specify the serial device it is connected to (e.g. /dev/ttya).",
7264 extended_remote_ops
.to_open
= extended_remote_open
;
7265 extended_remote_ops
.to_create_inferior
= extended_remote_create_inferior
;
7266 extended_remote_ops
.to_mourn_inferior
= extended_remote_mourn
;
7267 extended_remote_ops
.to_detach
= extended_remote_detach
;
7268 extended_remote_ops
.to_attach
= extended_remote_attach
;
7272 remote_can_async_p (void)
7274 /* We're async whenever the serial device is. */
7275 return remote_async_mask_value
&& serial_can_async_p (remote_desc
);
7279 remote_is_async_p (void)
7281 /* We're async whenever the serial device is. */
7282 return remote_async_mask_value
&& serial_is_async_p (remote_desc
);
7285 /* Pass the SERIAL event on and up to the client. One day this code
7286 will be able to delay notifying the client of an event until the
7287 point where an entire packet has been received. */
7289 static void (*async_client_callback
) (enum inferior_event_type event_type
,
7291 static void *async_client_context
;
7292 static serial_event_ftype remote_async_serial_handler
;
7295 remote_async_serial_handler (struct serial
*scb
, void *context
)
7297 /* Don't propogate error information up to the client. Instead let
7298 the client find out about the error by querying the target. */
7299 async_client_callback (INF_REG_EVENT
, async_client_context
);
7303 remote_async (void (*callback
) (enum inferior_event_type event_type
,
7304 void *context
), void *context
)
7306 if (remote_async_mask_value
== 0)
7307 internal_error (__FILE__
, __LINE__
,
7308 _("Calling remote_async when async is masked"));
7310 if (callback
!= NULL
)
7312 serial_async (remote_desc
, remote_async_serial_handler
, NULL
);
7313 async_client_callback
= callback
;
7314 async_client_context
= context
;
7317 serial_async (remote_desc
, NULL
, NULL
);
7321 remote_async_mask (int new_mask
)
7323 int curr_mask
= remote_async_mask_value
;
7324 remote_async_mask_value
= new_mask
;
7328 /* Target async and target extended-async.
7330 This are temporary targets, until it is all tested. Eventually
7331 async support will be incorporated int the usual 'remote'
7335 init_remote_async_ops (void)
7337 remote_async_ops
.to_shortname
= "async";
7338 remote_async_ops
.to_longname
=
7339 "Remote serial target in async version of the gdb-specific protocol";
7340 remote_async_ops
.to_doc
=
7341 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
7342 Specify the serial device it is connected to (e.g. /dev/ttya).";
7343 remote_async_ops
.to_open
= remote_async_open
;
7344 remote_async_ops
.to_close
= remote_close
;
7345 remote_async_ops
.to_detach
= remote_detach
;
7346 remote_async_ops
.to_disconnect
= remote_disconnect
;
7347 remote_async_ops
.to_resume
= remote_async_resume
;
7348 remote_async_ops
.to_wait
= remote_async_wait
;
7349 remote_async_ops
.to_fetch_registers
= remote_fetch_registers
;
7350 remote_async_ops
.to_store_registers
= remote_store_registers
;
7351 remote_async_ops
.to_prepare_to_store
= remote_prepare_to_store
;
7352 remote_async_ops
.deprecated_xfer_memory
= remote_xfer_memory
;
7353 remote_async_ops
.to_files_info
= remote_files_info
;
7354 remote_async_ops
.to_insert_breakpoint
= remote_insert_breakpoint
;
7355 remote_async_ops
.to_remove_breakpoint
= remote_remove_breakpoint
;
7356 remote_async_ops
.to_can_use_hw_breakpoint
= remote_check_watch_resources
;
7357 remote_async_ops
.to_insert_hw_breakpoint
= remote_insert_hw_breakpoint
;
7358 remote_async_ops
.to_remove_hw_breakpoint
= remote_remove_hw_breakpoint
;
7359 remote_async_ops
.to_insert_watchpoint
= remote_insert_watchpoint
;
7360 remote_async_ops
.to_remove_watchpoint
= remote_remove_watchpoint
;
7361 remote_async_ops
.to_stopped_by_watchpoint
= remote_stopped_by_watchpoint
;
7362 remote_async_ops
.to_stopped_data_address
= remote_stopped_data_address
;
7363 remote_async_ops
.to_terminal_inferior
= remote_async_terminal_inferior
;
7364 remote_async_ops
.to_terminal_ours
= remote_async_terminal_ours
;
7365 remote_async_ops
.to_kill
= remote_async_kill
;
7366 remote_async_ops
.to_load
= generic_load
;
7367 remote_async_ops
.to_mourn_inferior
= remote_async_mourn
;
7368 remote_async_ops
.to_thread_alive
= remote_thread_alive
;
7369 remote_async_ops
.to_find_new_threads
= remote_threads_info
;
7370 remote_async_ops
.to_pid_to_str
= remote_pid_to_str
;
7371 remote_async_ops
.to_extra_thread_info
= remote_threads_extra_info
;
7372 remote_async_ops
.to_stop
= remote_stop
;
7373 remote_async_ops
.to_xfer_partial
= remote_xfer_partial
;
7374 remote_async_ops
.to_rcmd
= remote_rcmd
;
7375 remote_async_ops
.to_get_thread_local_address
7376 = remote_get_thread_local_address
;
7377 remote_async_ops
.to_stratum
= process_stratum
;
7378 remote_async_ops
.to_has_all_memory
= 1;
7379 remote_async_ops
.to_has_memory
= 1;
7380 remote_async_ops
.to_has_stack
= 1;
7381 remote_async_ops
.to_has_registers
= 1;
7382 remote_async_ops
.to_has_execution
= 1;
7383 remote_async_ops
.to_has_thread_control
= tc_schedlock
; /* can lock scheduler */
7384 remote_async_ops
.to_can_async_p
= remote_can_async_p
;
7385 remote_async_ops
.to_is_async_p
= remote_is_async_p
;
7386 remote_async_ops
.to_async
= remote_async
;
7387 remote_async_ops
.to_async_mask
= remote_async_mask
;
7388 remote_async_ops
.to_magic
= OPS_MAGIC
;
7389 remote_async_ops
.to_memory_map
= remote_memory_map
;
7390 remote_async_ops
.to_flash_erase
= remote_flash_erase
;
7391 remote_async_ops
.to_flash_done
= remote_flash_done
;
7392 remote_async_ops
.to_read_description
= remote_read_description
;
7395 /* Set up the async extended remote vector by making a copy of the standard
7396 remote vector and adding to it. */
7399 init_extended_async_remote_ops (void)
7401 extended_async_remote_ops
= remote_async_ops
;
7403 extended_async_remote_ops
.to_shortname
= "extended-async";
7404 extended_async_remote_ops
.to_longname
=
7405 "Extended remote serial target in async gdb-specific protocol";
7406 extended_async_remote_ops
.to_doc
=
7407 "Use a remote computer via a serial line, using an async gdb-specific protocol.\n\
7408 Specify the serial device it is connected to (e.g. /dev/ttya).",
7409 extended_async_remote_ops
.to_open
= extended_remote_async_open
;
7410 extended_async_remote_ops
.to_create_inferior
= extended_remote_async_create_inferior
;
7411 extended_async_remote_ops
.to_mourn_inferior
= extended_async_remote_mourn
;
7412 extended_async_remote_ops
.to_detach
= extended_remote_detach
;
7413 extended_async_remote_ops
.to_attach
= extended_async_remote_attach
;
7417 set_remote_cmd (char *args
, int from_tty
)
7419 help_list (remote_set_cmdlist
, "set remote ", -1, gdb_stdout
);
7423 show_remote_cmd (char *args
, int from_tty
)
7425 /* We can't just use cmd_show_list here, because we want to skip
7426 the redundant "show remote Z-packet" and the legacy aliases. */
7427 struct cleanup
*showlist_chain
;
7428 struct cmd_list_element
*list
= remote_show_cmdlist
;
7430 showlist_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "showlist");
7431 for (; list
!= NULL
; list
= list
->next
)
7432 if (strcmp (list
->name
, "Z-packet") == 0)
7434 else if (list
->type
== not_set_cmd
)
7435 /* Alias commands are exactly like the original, except they
7436 don't have the normal type. */
7440 struct cleanup
*option_chain
7441 = make_cleanup_ui_out_tuple_begin_end (uiout
, "option");
7442 ui_out_field_string (uiout
, "name", list
->name
);
7443 ui_out_text (uiout
, ": ");
7444 if (list
->type
== show_cmd
)
7445 do_setshow_command ((char *) NULL
, from_tty
, list
);
7447 cmd_func (list
, NULL
, from_tty
);
7448 /* Close the tuple. */
7449 do_cleanups (option_chain
);
7452 /* Close the tuple. */
7453 do_cleanups (showlist_chain
);
7457 /* Function to be called whenever a new objfile (shlib) is detected. */
7459 remote_new_objfile (struct objfile
*objfile
)
7461 if (remote_desc
!= 0) /* Have a remote connection. */
7462 remote_check_symbols (objfile
);
7466 _initialize_remote (void)
7468 struct remote_state
*rs
;
7470 /* architecture specific data */
7471 remote_gdbarch_data_handle
=
7472 gdbarch_data_register_post_init (init_remote_state
);
7473 remote_g_packet_data_handle
=
7474 gdbarch_data_register_pre_init (remote_g_packet_data_init
);
7476 /* Initialize the per-target state. At the moment there is only one
7477 of these, not one per target. Only one target is active at a
7478 time. The default buffer size is unimportant; it will be expanded
7479 whenever a larger buffer is needed. */
7480 rs
= get_remote_state_raw ();
7482 rs
->buf
= xmalloc (rs
->buf_size
);
7485 add_target (&remote_ops
);
7487 init_extended_remote_ops ();
7488 add_target (&extended_remote_ops
);
7490 init_remote_async_ops ();
7491 add_target (&remote_async_ops
);
7493 init_extended_async_remote_ops ();
7494 add_target (&extended_async_remote_ops
);
7496 /* Hook into new objfile notification. */
7497 observer_attach_new_objfile (remote_new_objfile
);
7499 /* Set up signal handlers. */
7500 sigint_remote_token
=
7501 create_async_signal_handler (async_remote_interrupt
, NULL
);
7502 sigint_remote_twice_token
=
7503 create_async_signal_handler (inferior_event_handler_wrapper
, NULL
);
7506 init_remote_threadtests ();
7509 /* set/show remote ... */
7511 add_prefix_cmd ("remote", class_maintenance
, set_remote_cmd
, _("\
7512 Remote protocol specific variables\n\
7513 Configure various remote-protocol specific variables such as\n\
7514 the packets being used"),
7515 &remote_set_cmdlist
, "set remote ",
7516 0 /* allow-unknown */, &setlist
);
7517 add_prefix_cmd ("remote", class_maintenance
, show_remote_cmd
, _("\
7518 Remote protocol specific variables\n\
7519 Configure various remote-protocol specific variables such as\n\
7520 the packets being used"),
7521 &remote_show_cmdlist
, "show remote ",
7522 0 /* allow-unknown */, &showlist
);
7524 add_cmd ("compare-sections", class_obscure
, compare_sections_command
, _("\
7525 Compare section data on target to the exec file.\n\
7526 Argument is a single section name (default: all loaded sections)."),
7529 add_cmd ("packet", class_maintenance
, packet_command
, _("\
7530 Send an arbitrary packet to a remote target.\n\
7531 maintenance packet TEXT\n\
7532 If GDB is talking to an inferior via the GDB serial protocol, then\n\
7533 this command sends the string TEXT to the inferior, and displays the\n\
7534 response packet. GDB supplies the initial `$' character, and the\n\
7535 terminating `#' character and checksum."),
7538 add_setshow_boolean_cmd ("remotebreak", no_class
, &remote_break
, _("\
7539 Set whether to send break if interrupted."), _("\
7540 Show whether to send break if interrupted."), _("\
7541 If set, a break, instead of a cntrl-c, is sent to the remote target."),
7542 NULL
, NULL
, /* FIXME: i18n: Whether to send break if interrupted is %s. */
7543 &setlist
, &showlist
);
7545 /* Install commands for configuring memory read/write packets. */
7547 add_cmd ("remotewritesize", no_class
, set_memory_write_packet_size
, _("\
7548 Set the maximum number of bytes per memory write packet (deprecated)."),
7550 add_cmd ("remotewritesize", no_class
, show_memory_write_packet_size
, _("\
7551 Show the maximum number of bytes per memory write packet (deprecated)."),
7553 add_cmd ("memory-write-packet-size", no_class
,
7554 set_memory_write_packet_size
, _("\
7555 Set the maximum number of bytes per memory-write packet.\n\
7556 Specify the number of bytes in a packet or 0 (zero) for the\n\
7557 default packet size. The actual limit is further reduced\n\
7558 dependent on the target. Specify ``fixed'' to disable the\n\
7559 further restriction and ``limit'' to enable that restriction."),
7560 &remote_set_cmdlist
);
7561 add_cmd ("memory-read-packet-size", no_class
,
7562 set_memory_read_packet_size
, _("\
7563 Set the maximum number of bytes per memory-read packet.\n\
7564 Specify the number of bytes in a packet or 0 (zero) for the\n\
7565 default packet size. The actual limit is further reduced\n\
7566 dependent on the target. Specify ``fixed'' to disable the\n\
7567 further restriction and ``limit'' to enable that restriction."),
7568 &remote_set_cmdlist
);
7569 add_cmd ("memory-write-packet-size", no_class
,
7570 show_memory_write_packet_size
,
7571 _("Show the maximum number of bytes per memory-write packet."),
7572 &remote_show_cmdlist
);
7573 add_cmd ("memory-read-packet-size", no_class
,
7574 show_memory_read_packet_size
,
7575 _("Show the maximum number of bytes per memory-read packet."),
7576 &remote_show_cmdlist
);
7578 add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class
,
7579 &remote_hw_watchpoint_limit
, _("\
7580 Set the maximum number of target hardware watchpoints."), _("\
7581 Show the maximum number of target hardware watchpoints."), _("\
7582 Specify a negative limit for unlimited."),
7583 NULL
, NULL
, /* FIXME: i18n: The maximum number of target hardware watchpoints is %s. */
7584 &remote_set_cmdlist
, &remote_show_cmdlist
);
7585 add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class
,
7586 &remote_hw_breakpoint_limit
, _("\
7587 Set the maximum number of target hardware breakpoints."), _("\
7588 Show the maximum number of target hardware breakpoints."), _("\
7589 Specify a negative limit for unlimited."),
7590 NULL
, NULL
, /* FIXME: i18n: The maximum number of target hardware breakpoints is %s. */
7591 &remote_set_cmdlist
, &remote_show_cmdlist
);
7593 add_setshow_integer_cmd ("remoteaddresssize", class_obscure
,
7594 &remote_address_size
, _("\
7595 Set the maximum size of the address (in bits) in a memory packet."), _("\
7596 Show the maximum size of the address (in bits) in a memory packet."), NULL
,
7598 NULL
, /* FIXME: i18n: */
7599 &setlist
, &showlist
);
7601 add_packet_config_cmd (&remote_protocol_packets
[PACKET_X
],
7602 "X", "binary-download", 1);
7604 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vCont
],
7605 "vCont", "verbose-resume", 0);
7607 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QPassSignals
],
7608 "QPassSignals", "pass-signals", 0);
7610 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSymbol
],
7611 "qSymbol", "symbol-lookup", 0);
7613 add_packet_config_cmd (&remote_protocol_packets
[PACKET_P
],
7614 "P", "set-register", 1);
7616 add_packet_config_cmd (&remote_protocol_packets
[PACKET_p
],
7617 "p", "fetch-register", 1);
7619 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z0
],
7620 "Z0", "software-breakpoint", 0);
7622 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z1
],
7623 "Z1", "hardware-breakpoint", 0);
7625 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z2
],
7626 "Z2", "write-watchpoint", 0);
7628 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z3
],
7629 "Z3", "read-watchpoint", 0);
7631 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z4
],
7632 "Z4", "access-watchpoint", 0);
7634 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_auxv
],
7635 "qXfer:auxv:read", "read-aux-vector", 0);
7637 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_features
],
7638 "qXfer:features:read", "target-features", 0);
7640 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_libraries
],
7641 "qXfer:libraries:read", "library-info", 0);
7643 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_memory_map
],
7644 "qXfer:memory-map:read", "memory-map", 0);
7646 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_spu_read
],
7647 "qXfer:spu:read", "read-spu-object", 0);
7649 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_spu_write
],
7650 "qXfer:spu:write", "write-spu-object", 0);
7652 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qGetTLSAddr
],
7653 "qGetTLSAddr", "get-thread-local-storage-address",
7656 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSupported
],
7657 "qSupported", "supported-packets", 0);
7659 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_open
],
7660 "vFile:open", "hostio-open", 0);
7662 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_pread
],
7663 "vFile:pread", "hostio-pread", 0);
7665 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_pwrite
],
7666 "vFile:pwrite", "hostio-pwrite", 0);
7668 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_close
],
7669 "vFile:close", "hostio-close", 0);
7671 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_unlink
],
7672 "vFile:unlink", "hostio-unlink", 0);
7674 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vAttach
],
7675 "vAttach", "attach", 0);
7677 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vRun
],
7680 /* Keep the old ``set remote Z-packet ...'' working. Each individual
7681 Z sub-packet has its own set and show commands, but users may
7682 have sets to this variable in their .gdbinit files (or in their
7684 add_setshow_auto_boolean_cmd ("Z-packet", class_obscure
,
7685 &remote_Z_packet_detect
, _("\
7686 Set use of remote protocol `Z' packets"), _("\
7687 Show use of remote protocol `Z' packets "), _("\
7688 When set, GDB will attempt to use the remote breakpoint and watchpoint\n\
7690 set_remote_protocol_Z_packet_cmd
,
7691 show_remote_protocol_Z_packet_cmd
, /* FIXME: i18n: Use of remote protocol `Z' packets is %s. */
7692 &remote_set_cmdlist
, &remote_show_cmdlist
);
7694 add_prefix_cmd ("remote", class_files
, remote_command
, _("\
7695 Manipulate files on the remote system\n\
7696 Transfer files to and from the remote target system."),
7697 &remote_cmdlist
, "remote ",
7698 0 /* allow-unknown */, &cmdlist
);
7700 add_cmd ("put", class_files
, remote_put_command
,
7701 _("Copy a local file to the remote system."),
7704 add_cmd ("get", class_files
, remote_get_command
,
7705 _("Copy a remote file to the local system."),
7708 add_cmd ("delete", class_files
, remote_delete_command
,
7709 _("Delete a remote file."),
7712 remote_exec_file
= xstrdup ("");
7713 add_setshow_string_noescape_cmd ("exec-file", class_files
,
7714 &remote_exec_file
, _("\
7715 Set the remote pathname for \"run\""), _("\
7716 Show the remote pathname for \"run\""), NULL
, NULL
, NULL
,
7717 &remote_set_cmdlist
, &remote_show_cmdlist
);
7719 /* Eventually initialize fileio. See fileio.c */
7720 initialize_remote_fileio (remote_set_cmdlist
, remote_show_cmdlist
);