1 /* Remote target communications for serial-line targets in custom GDB protocol
3 Copyright (C) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996,
4 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006
5 Free Software Foundation, Inc.
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 51 Franklin Street, Fifth Floor,
22 Boston, MA 02110-1301, USA. */
24 /* See the GDB User Guide for details of the GDB remote protocol. */
27 #include "gdb_string.h"
33 #include "exceptions.h"
35 /*#include "terminal.h" */
38 #include "gdb-stabs.h"
39 #include "gdbthread.h"
43 #include "gdb_assert.h"
46 #include "cli/cli-decode.h"
47 #include "cli/cli-setshow.h"
52 #include "event-loop.h"
53 #include "event-top.h"
59 #include "gdbcore.h" /* for exec_bfd */
61 #include "remote-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 build_remote_gdbarch_data (void);
89 static void remote_files_info (struct target_ops
*ignore
);
91 static void remote_prepare_to_store (void);
93 static void remote_fetch_registers (int regno
);
95 static void remote_resume (ptid_t ptid
, int step
,
96 enum target_signal siggnal
);
97 static void remote_async_resume (ptid_t ptid
, int step
,
98 enum target_signal siggnal
);
99 static void remote_open (char *name
, int from_tty
);
100 static void remote_async_open (char *name
, int from_tty
);
102 static void extended_remote_open (char *name
, int from_tty
);
103 static void extended_remote_async_open (char *name
, int from_tty
);
105 static void remote_open_1 (char *, int, struct target_ops
*, int extended_p
,
108 static void remote_close (int quitting
);
110 static void remote_store_registers (int regno
);
112 static void remote_mourn (void);
113 static void remote_async_mourn (void);
115 static void extended_remote_restart (void);
117 static void extended_remote_mourn (void);
119 static void remote_mourn_1 (struct target_ops
*);
121 static void remote_send (char **buf
, long *sizeof_buf_p
);
123 static int readchar (int timeout
);
125 static ptid_t
remote_wait (ptid_t ptid
,
126 struct target_waitstatus
*status
);
127 static ptid_t
remote_async_wait (ptid_t ptid
,
128 struct target_waitstatus
*status
);
130 static void remote_kill (void);
131 static void remote_async_kill (void);
133 static int tohex (int nib
);
135 static void remote_detach (char *args
, int from_tty
);
137 static void remote_interrupt (int signo
);
139 static void remote_interrupt_twice (int signo
);
141 static void interrupt_query (void);
143 static void set_thread (int, int);
145 static int remote_thread_alive (ptid_t
);
147 static void get_offsets (void);
149 static void skip_frame (void);
151 static long read_frame (char **buf_p
, long *sizeof_buf
);
153 static int hexnumlen (ULONGEST num
);
155 static void init_remote_ops (void);
157 static void init_extended_remote_ops (void);
159 static void remote_stop (void);
161 static int ishex (int ch
, int *val
);
163 static int stubhex (int ch
);
165 static int hexnumstr (char *, ULONGEST
);
167 static int hexnumnstr (char *, ULONGEST
, int);
169 static CORE_ADDR
remote_address_masked (CORE_ADDR
);
171 static void print_packet (char *);
173 static unsigned long crc32 (unsigned char *, int, unsigned int);
175 static void compare_sections_command (char *, int);
177 static void packet_command (char *, int);
179 static int stub_unpack_int (char *buff
, int fieldlength
);
181 static ptid_t
remote_current_thread (ptid_t oldptid
);
183 static void remote_find_new_threads (void);
185 static void record_currthread (int currthread
);
187 static int fromhex (int a
);
189 static int hex2bin (const char *hex
, gdb_byte
*bin
, int count
);
191 static int bin2hex (const gdb_byte
*bin
, char *hex
, int count
);
193 static int putpkt_binary (char *buf
, int cnt
);
195 static void check_binary_download (CORE_ADDR addr
);
197 struct packet_config
;
199 static void show_packet_config_cmd (struct packet_config
*config
);
201 static void update_packet_config (struct packet_config
*config
);
203 static void set_remote_protocol_packet_cmd (char *args
, int from_tty
,
204 struct cmd_list_element
*c
);
206 static void show_remote_protocol_packet_cmd (struct ui_file
*file
,
208 struct cmd_list_element
*c
,
211 void _initialize_remote (void);
213 /* For "set remote" and "show remote". */
215 static struct cmd_list_element
*remote_set_cmdlist
;
216 static struct cmd_list_element
*remote_show_cmdlist
;
218 /* Description of the remote protocol state for the currently
219 connected target. This is per-target state, and independent of the
220 selected architecture. */
224 /* A buffer to use for incoming packets, and its current size. The
225 buffer is grown dynamically for larger incoming packets.
226 Outgoing packets may also be constructed in this buffer.
227 BUF_SIZE is always at least REMOTE_PACKET_SIZE;
228 REMOTE_PACKET_SIZE should be used to limit the length of outgoing
233 /* If we negotiated packet size explicitly (and thus can bypass
234 heuristics for the largest packet size that will not overflow
235 a buffer in the stub), this will be set to that packet size.
236 Otherwise zero, meaning to use the guessed size. */
237 long explicit_packet_size
;
240 /* This data could be associated with a target, but we do not always
241 have access to the current target when we need it, so for now it is
242 static. This will be fine for as long as only one target is in use
244 static struct remote_state remote_state
;
246 static struct remote_state
*
247 get_remote_state_raw (void)
249 return &remote_state
;
252 /* Description of the remote protocol for a given architecture. */
256 long offset
; /* Offset into G packet. */
257 long regnum
; /* GDB's internal register number. */
258 LONGEST pnum
; /* Remote protocol register number. */
259 int in_g_packet
; /* Always part of G packet. */
260 /* long size in bytes; == register_size (current_gdbarch, regnum);
262 /* char *name; == REGISTER_NAME (regnum); at present. */
265 struct remote_arch_state
267 /* Description of the remote protocol registers. */
268 long sizeof_g_packet
;
270 /* Description of the remote protocol registers indexed by REGNUM
271 (making an array of NUM_REGS + NUM_PSEUDO_REGS in size). */
272 struct packet_reg
*regs
;
274 /* This is the size (in chars) of the first response to the ``g''
275 packet. It is used as a heuristic when determining the maximum
276 size of memory-read and memory-write packets. A target will
277 typically only reserve a buffer large enough to hold the ``g''
278 packet. The size does not include packet overhead (headers and
280 long actual_register_packet_size
;
282 /* This is the maximum size (in chars) of a non read/write packet.
283 It is also used as a cap on the size of read/write packets. */
284 long remote_packet_size
;
288 /* Handle for retreving the remote protocol data from gdbarch. */
289 static struct gdbarch_data
*remote_gdbarch_data_handle
;
291 static struct remote_arch_state
*
292 get_remote_arch_state (void)
294 return gdbarch_data (current_gdbarch
, remote_gdbarch_data_handle
);
297 /* Fetch the global remote target state. */
299 static struct remote_state
*
300 get_remote_state (void)
302 /* Make sure that the remote architecture state has been
303 initialized, because doing so might reallocate rs->buf. Any
304 function which calls getpkt also needs to be mindful of changes
305 to rs->buf, but this call limits the number of places which run
307 get_remote_arch_state ();
309 return get_remote_state_raw ();
313 init_remote_state (struct gdbarch
*gdbarch
)
316 struct remote_state
*rs
= get_remote_state_raw ();
317 struct remote_arch_state
*rsa
;
319 rsa
= GDBARCH_OBSTACK_ZALLOC (gdbarch
, struct remote_arch_state
);
321 rsa
->sizeof_g_packet
= 0;
323 /* Assume a 1:1 regnum<->pnum table. */
324 rsa
->regs
= GDBARCH_OBSTACK_CALLOC (gdbarch
, NUM_REGS
+ NUM_PSEUDO_REGS
,
326 for (regnum
= 0; regnum
< NUM_REGS
+ NUM_PSEUDO_REGS
; regnum
++)
328 struct packet_reg
*r
= &rsa
->regs
[regnum
];
331 r
->offset
= DEPRECATED_REGISTER_BYTE (regnum
);
332 r
->in_g_packet
= (regnum
< NUM_REGS
);
333 /* ...name = REGISTER_NAME (regnum); */
335 /* Compute packet size by accumulating the size of all registers. */
336 if (regnum
< NUM_REGS
)
337 rsa
->sizeof_g_packet
+= register_size (current_gdbarch
, regnum
);
340 /* Default maximum number of characters in a packet body. Many
341 remote stubs have a hardwired buffer size of 400 bytes
342 (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used
343 as the maximum packet-size to ensure that the packet and an extra
344 NUL character can always fit in the buffer. This stops GDB
345 trashing stubs that try to squeeze an extra NUL into what is
346 already a full buffer (As of 1999-12-04 that was most stubs). */
347 rsa
->remote_packet_size
= 400 - 1;
349 /* This one is filled in when a ``g'' packet is received. */
350 rsa
->actual_register_packet_size
= 0;
352 /* Should rsa->sizeof_g_packet needs more space than the
353 default, adjust the size accordingly. Remember that each byte is
354 encoded as two characters. 32 is the overhead for the packet
355 header / footer. NOTE: cagney/1999-10-26: I suspect that 8
356 (``$NN:G...#NN'') is a better guess, the below has been padded a
358 if (rsa
->sizeof_g_packet
> ((rsa
->remote_packet_size
- 32) / 2))
359 rsa
->remote_packet_size
= (rsa
->sizeof_g_packet
* 2 + 32);
361 /* Make sure that the packet buffer is plenty big enough for
362 this architecture. */
363 if (rs
->buf_size
< rsa
->remote_packet_size
)
365 rs
->buf_size
= 2 * rsa
->remote_packet_size
;
366 rs
->buf
= xrealloc (rs
->buf
, rs
->buf_size
);
372 /* Return the current allowed size of a remote packet. This is
373 inferred from the current architecture, and should be used to
374 limit the length of outgoing packets. */
376 get_remote_packet_size (void)
378 struct remote_state
*rs
= get_remote_state ();
379 struct remote_arch_state
*rsa
= get_remote_arch_state ();
381 if (rs
->explicit_packet_size
)
382 return rs
->explicit_packet_size
;
384 return rsa
->remote_packet_size
;
387 static struct packet_reg
*
388 packet_reg_from_regnum (struct remote_arch_state
*rsa
, long regnum
)
390 if (regnum
< 0 && regnum
>= NUM_REGS
+ NUM_PSEUDO_REGS
)
394 struct packet_reg
*r
= &rsa
->regs
[regnum
];
395 gdb_assert (r
->regnum
== regnum
);
400 static struct packet_reg
*
401 packet_reg_from_pnum (struct remote_arch_state
*rsa
, LONGEST pnum
)
404 for (i
= 0; i
< NUM_REGS
+ NUM_PSEUDO_REGS
; i
++)
406 struct packet_reg
*r
= &rsa
->regs
[i
];
413 /* FIXME: graces/2002-08-08: These variables should eventually be
414 bound to an instance of the target object (as in gdbarch-tdep()),
415 when such a thing exists. */
417 /* This is set to the data address of the access causing the target
418 to stop for a watchpoint. */
419 static CORE_ADDR remote_watch_data_address
;
421 /* This is non-zero if target stopped for a watchpoint. */
422 static int remote_stopped_by_watchpoint_p
;
424 static struct target_ops remote_ops
;
426 static struct target_ops extended_remote_ops
;
428 /* Temporary target ops. Just like the remote_ops and
429 extended_remote_ops, but with asynchronous support. */
430 static struct target_ops remote_async_ops
;
432 static struct target_ops extended_async_remote_ops
;
434 /* FIXME: cagney/1999-09-23: Even though getpkt was called with
435 ``forever'' still use the normal timeout mechanism. This is
436 currently used by the ASYNC code to guarentee that target reads
437 during the initial connect always time-out. Once getpkt has been
438 modified to return a timeout indication and, in turn
439 remote_wait()/wait_for_inferior() have gained a timeout parameter
441 static int wait_forever_enabled_p
= 1;
444 /* This variable chooses whether to send a ^C or a break when the user
445 requests program interruption. Although ^C is usually what remote
446 systems expect, and that is the default here, sometimes a break is
447 preferable instead. */
449 static int remote_break
;
451 /* Descriptor for I/O to remote machine. Initialize it to NULL so that
452 remote_open knows that we don't have a file open when the program
454 static struct serial
*remote_desc
= NULL
;
456 /* This variable sets the number of bits in an address that are to be
457 sent in a memory ("M" or "m") packet. Normally, after stripping
458 leading zeros, the entire address would be sent. This variable
459 restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The
460 initial implementation of remote.c restricted the address sent in
461 memory packets to ``host::sizeof long'' bytes - (typically 32
462 bits). Consequently, for 64 bit targets, the upper 32 bits of an
463 address was never sent. Since fixing this bug may cause a break in
464 some remote targets this variable is principly provided to
465 facilitate backward compatibility. */
467 static int remote_address_size
;
469 /* Tempoary to track who currently owns the terminal. See
470 target_async_terminal_* for more details. */
472 static int remote_async_terminal_ours_p
;
475 /* User configurable variables for the number of characters in a
476 memory read/write packet. MIN (rsa->remote_packet_size,
477 rsa->sizeof_g_packet) is the default. Some targets need smaller
478 values (fifo overruns, et.al.) and some users need larger values
479 (speed up transfers). The variables ``preferred_*'' (the user
480 request), ``current_*'' (what was actually set) and ``forced_*''
481 (Positive - a soft limit, negative - a hard limit). */
483 struct memory_packet_config
490 /* Compute the current size of a read/write packet. Since this makes
491 use of ``actual_register_packet_size'' the computation is dynamic. */
494 get_memory_packet_size (struct memory_packet_config
*config
)
496 struct remote_state
*rs
= get_remote_state ();
497 struct remote_arch_state
*rsa
= get_remote_arch_state ();
499 /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk
500 law?) that some hosts don't cope very well with large alloca()
501 calls. Eventually the alloca() code will be replaced by calls to
502 xmalloc() and make_cleanups() allowing this restriction to either
503 be lifted or removed. */
504 #ifndef MAX_REMOTE_PACKET_SIZE
505 #define MAX_REMOTE_PACKET_SIZE 16384
507 /* NOTE: 20 ensures we can write at least one byte. */
508 #ifndef MIN_REMOTE_PACKET_SIZE
509 #define MIN_REMOTE_PACKET_SIZE 20
514 if (config
->size
<= 0)
515 what_they_get
= MAX_REMOTE_PACKET_SIZE
;
517 what_they_get
= config
->size
;
521 what_they_get
= get_remote_packet_size ();
522 /* Limit the packet to the size specified by the user. */
524 && what_they_get
> config
->size
)
525 what_they_get
= config
->size
;
527 /* Limit it to the size of the targets ``g'' response unless we have
528 permission from the stub to use a larger packet size. */
529 if (rs
->explicit_packet_size
== 0
530 && rsa
->actual_register_packet_size
> 0
531 && what_they_get
> rsa
->actual_register_packet_size
)
532 what_they_get
= rsa
->actual_register_packet_size
;
534 if (what_they_get
> MAX_REMOTE_PACKET_SIZE
)
535 what_they_get
= MAX_REMOTE_PACKET_SIZE
;
536 if (what_they_get
< MIN_REMOTE_PACKET_SIZE
)
537 what_they_get
= MIN_REMOTE_PACKET_SIZE
;
539 /* Make sure there is room in the global buffer for this packet
540 (including its trailing NUL byte). */
541 if (rs
->buf_size
< what_they_get
+ 1)
543 rs
->buf_size
= 2 * what_they_get
;
544 rs
->buf
= xrealloc (rs
->buf
, 2 * what_they_get
);
547 return what_they_get
;
550 /* Update the size of a read/write packet. If they user wants
551 something really big then do a sanity check. */
554 set_memory_packet_size (char *args
, struct memory_packet_config
*config
)
556 int fixed_p
= config
->fixed_p
;
557 long size
= config
->size
;
559 error (_("Argument required (integer, `fixed' or `limited')."));
560 else if (strcmp (args
, "hard") == 0
561 || strcmp (args
, "fixed") == 0)
563 else if (strcmp (args
, "soft") == 0
564 || strcmp (args
, "limit") == 0)
569 size
= strtoul (args
, &end
, 0);
571 error (_("Invalid %s (bad syntax)."), config
->name
);
573 /* Instead of explicitly capping the size of a packet to
574 MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is
575 instead allowed to set the size to something arbitrarily
577 if (size
> MAX_REMOTE_PACKET_SIZE
)
578 error (_("Invalid %s (too large)."), config
->name
);
582 if (fixed_p
&& !config
->fixed_p
)
584 if (! query (_("The target may not be able to correctly handle a %s\n"
585 "of %ld bytes. Change the packet size? "),
587 error (_("Packet size not changed."));
589 /* Update the config. */
590 config
->fixed_p
= fixed_p
;
595 show_memory_packet_size (struct memory_packet_config
*config
)
597 printf_filtered (_("The %s is %ld. "), config
->name
, config
->size
);
599 printf_filtered (_("Packets are fixed at %ld bytes.\n"),
600 get_memory_packet_size (config
));
602 printf_filtered (_("Packets are limited to %ld bytes.\n"),
603 get_memory_packet_size (config
));
606 static struct memory_packet_config memory_write_packet_config
=
608 "memory-write-packet-size",
612 set_memory_write_packet_size (char *args
, int from_tty
)
614 set_memory_packet_size (args
, &memory_write_packet_config
);
618 show_memory_write_packet_size (char *args
, int from_tty
)
620 show_memory_packet_size (&memory_write_packet_config
);
624 get_memory_write_packet_size (void)
626 return get_memory_packet_size (&memory_write_packet_config
);
629 static struct memory_packet_config memory_read_packet_config
=
631 "memory-read-packet-size",
635 set_memory_read_packet_size (char *args
, int from_tty
)
637 set_memory_packet_size (args
, &memory_read_packet_config
);
641 show_memory_read_packet_size (char *args
, int from_tty
)
643 show_memory_packet_size (&memory_read_packet_config
);
647 get_memory_read_packet_size (void)
649 long size
= get_memory_packet_size (&memory_read_packet_config
);
650 /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an
651 extra buffer size argument before the memory read size can be
652 increased beyond this. */
653 if (size
> get_remote_packet_size ())
654 size
= get_remote_packet_size ();
659 /* Generic configuration support for packets the stub optionally
660 supports. Allows the user to specify the use of the packet as well
661 as allowing GDB to auto-detect support in the remote stub. */
665 PACKET_SUPPORT_UNKNOWN
= 0,
674 enum auto_boolean detect
;
675 enum packet_support support
;
678 /* Analyze a packet's return value and update the packet config
689 update_packet_config (struct packet_config
*config
)
691 switch (config
->detect
)
693 case AUTO_BOOLEAN_TRUE
:
694 config
->support
= PACKET_ENABLE
;
696 case AUTO_BOOLEAN_FALSE
:
697 config
->support
= PACKET_DISABLE
;
699 case AUTO_BOOLEAN_AUTO
:
700 config
->support
= PACKET_SUPPORT_UNKNOWN
;
706 show_packet_config_cmd (struct packet_config
*config
)
708 char *support
= "internal-error";
709 switch (config
->support
)
715 support
= "disabled";
717 case PACKET_SUPPORT_UNKNOWN
:
721 switch (config
->detect
)
723 case AUTO_BOOLEAN_AUTO
:
724 printf_filtered (_("Support for the `%s' packet is auto-detected, currently %s.\n"),
725 config
->name
, support
);
727 case AUTO_BOOLEAN_TRUE
:
728 case AUTO_BOOLEAN_FALSE
:
729 printf_filtered (_("Support for the `%s' packet is currently %s.\n"),
730 config
->name
, support
);
736 add_packet_config_cmd (struct packet_config
*config
, const char *name
,
737 const char *title
, int legacy
)
744 config
->title
= title
;
745 config
->detect
= AUTO_BOOLEAN_AUTO
;
746 config
->support
= PACKET_SUPPORT_UNKNOWN
;
747 set_doc
= xstrprintf ("Set use of remote protocol `%s' (%s) packet",
749 show_doc
= xstrprintf ("Show current use of remote protocol `%s' (%s) packet",
751 /* set/show TITLE-packet {auto,on,off} */
752 cmd_name
= xstrprintf ("%s-packet", title
);
753 add_setshow_auto_boolean_cmd (cmd_name
, class_obscure
,
754 &config
->detect
, set_doc
, show_doc
, NULL
, /* help_doc */
755 set_remote_protocol_packet_cmd
,
756 show_remote_protocol_packet_cmd
,
757 &remote_set_cmdlist
, &remote_show_cmdlist
);
758 /* set/show remote NAME-packet {auto,on,off} -- legacy. */
762 legacy_name
= xstrprintf ("%s-packet", name
);
763 add_alias_cmd (legacy_name
, cmd_name
, class_obscure
, 0,
764 &remote_set_cmdlist
);
765 add_alias_cmd (legacy_name
, cmd_name
, class_obscure
, 0,
766 &remote_show_cmdlist
);
770 static enum packet_result
771 packet_check_result (const char *buf
)
775 /* The stub recognized the packet request. Check that the
776 operation succeeded. */
778 && isxdigit (buf
[1]) && isxdigit (buf
[2])
780 /* "Enn" - definitly an error. */
783 /* Always treat "E." as an error. This will be used for
784 more verbose error messages, such as E.memtypes. */
785 if (buf
[0] == 'E' && buf
[1] == '.')
788 /* The packet may or may not be OK. Just assume it is. */
792 /* The stub does not support the packet. */
793 return PACKET_UNKNOWN
;
796 static enum packet_result
797 packet_ok (const char *buf
, struct packet_config
*config
)
799 enum packet_result result
;
801 result
= packet_check_result (buf
);
806 /* The stub recognized the packet request. */
807 switch (config
->support
)
809 case PACKET_SUPPORT_UNKNOWN
:
811 fprintf_unfiltered (gdb_stdlog
,
812 "Packet %s (%s) is supported\n",
813 config
->name
, config
->title
);
814 config
->support
= PACKET_ENABLE
;
817 internal_error (__FILE__
, __LINE__
,
818 _("packet_ok: attempt to use a disabled packet"));
825 /* The stub does not support the packet. */
826 switch (config
->support
)
829 if (config
->detect
== AUTO_BOOLEAN_AUTO
)
830 /* If the stub previously indicated that the packet was
831 supported then there is a protocol error.. */
832 error (_("Protocol error: %s (%s) conflicting enabled responses."),
833 config
->name
, config
->title
);
835 /* The user set it wrong. */
836 error (_("Enabled packet %s (%s) not recognized by stub"),
837 config
->name
, config
->title
);
839 case PACKET_SUPPORT_UNKNOWN
:
841 fprintf_unfiltered (gdb_stdlog
,
842 "Packet %s (%s) is NOT supported\n",
843 config
->name
, config
->title
);
844 config
->support
= PACKET_DISABLE
;
867 PACKET_qXfer_memory_map
,
873 static struct packet_config remote_protocol_packets
[PACKET_MAX
];
876 set_remote_protocol_packet_cmd (char *args
, int from_tty
,
877 struct cmd_list_element
*c
)
879 struct packet_config
*packet
;
881 for (packet
= remote_protocol_packets
;
882 packet
< &remote_protocol_packets
[PACKET_MAX
];
885 if (&packet
->detect
== c
->var
)
887 update_packet_config (packet
);
891 internal_error (__FILE__
, __LINE__
, "Could not find config for %s",
896 show_remote_protocol_packet_cmd (struct ui_file
*file
, int from_tty
,
897 struct cmd_list_element
*c
,
900 struct packet_config
*packet
;
902 for (packet
= remote_protocol_packets
;
903 packet
< &remote_protocol_packets
[PACKET_MAX
];
906 if (&packet
->detect
== c
->var
)
908 show_packet_config_cmd (packet
);
912 internal_error (__FILE__
, __LINE__
, "Could not find config for %s",
916 /* Should we try one of the 'Z' requests? */
920 Z_PACKET_SOFTWARE_BP
,
921 Z_PACKET_HARDWARE_BP
,
928 /* For compatibility with older distributions. Provide a ``set remote
929 Z-packet ...'' command that updates all the Z packet types. */
931 static enum auto_boolean remote_Z_packet_detect
;
934 set_remote_protocol_Z_packet_cmd (char *args
, int from_tty
,
935 struct cmd_list_element
*c
)
938 for (i
= 0; i
< NR_Z_PACKET_TYPES
; i
++)
940 remote_protocol_packets
[PACKET_Z0
+ i
].detect
= remote_Z_packet_detect
;
941 update_packet_config (&remote_protocol_packets
[PACKET_Z0
+ i
]);
946 show_remote_protocol_Z_packet_cmd (struct ui_file
*file
, int from_tty
,
947 struct cmd_list_element
*c
,
951 for (i
= 0; i
< NR_Z_PACKET_TYPES
; i
++)
953 show_packet_config_cmd (&remote_protocol_packets
[PACKET_Z0
+ i
]);
957 /* Should we try the 'ThreadInfo' query packet?
959 This variable (NOT available to the user: auto-detect only!)
960 determines whether GDB will use the new, simpler "ThreadInfo"
961 query or the older, more complex syntax for thread queries.
962 This is an auto-detect variable (set to true at each connect,
963 and set to false when the target fails to recognize it). */
965 static int use_threadinfo_query
;
966 static int use_threadextra_query
;
968 /* Tokens for use by the asynchronous signal handlers for SIGINT. */
969 static void *sigint_remote_twice_token
;
970 static void *sigint_remote_token
;
972 /* These are pointers to hook functions that may be set in order to
973 modify resume/wait behavior for a particular architecture. */
975 void (*deprecated_target_resume_hook
) (void);
976 void (*deprecated_target_wait_loop_hook
) (void);
980 /* These are the threads which we last sent to the remote system.
981 -1 for all or -2 for not sent yet. */
982 static int general_thread
;
983 static int continue_thread
;
985 /* Call this function as a result of
986 1) A halt indication (T packet) containing a thread id
987 2) A direct query of currthread
988 3) Successful execution of set thread
992 record_currthread (int currthread
)
994 general_thread
= currthread
;
996 /* If this is a new thread, add it to GDB's thread list.
997 If we leave it up to WFI to do this, bad things will happen. */
998 if (!in_thread_list (pid_to_ptid (currthread
)))
1000 add_thread (pid_to_ptid (currthread
));
1001 ui_out_text (uiout
, "[New ");
1002 ui_out_text (uiout
, target_pid_to_str (pid_to_ptid (currthread
)));
1003 ui_out_text (uiout
, "]\n");
1007 #define MAGIC_NULL_PID 42000
1010 set_thread (int th
, int gen
)
1012 struct remote_state
*rs
= get_remote_state ();
1013 char *buf
= rs
->buf
;
1014 int state
= gen
? general_thread
: continue_thread
;
1020 buf
[1] = gen
? 'g' : 'c';
1021 if (th
== MAGIC_NULL_PID
)
1027 xsnprintf (&buf
[2], get_remote_packet_size () - 2, "-%x", -th
);
1029 xsnprintf (&buf
[2], get_remote_packet_size () - 2, "%x", th
);
1031 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1033 general_thread
= th
;
1035 continue_thread
= th
;
1038 /* Return nonzero if the thread TH is still alive on the remote system. */
1041 remote_thread_alive (ptid_t ptid
)
1043 struct remote_state
*rs
= get_remote_state ();
1044 int tid
= PIDGET (ptid
);
1047 xsnprintf (rs
->buf
, get_remote_packet_size (), "T-%08x", -tid
);
1049 xsnprintf (rs
->buf
, get_remote_packet_size (), "T%08x", tid
);
1051 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1052 return (rs
->buf
[0] == 'O' && rs
->buf
[1] == 'K');
1055 /* About these extended threadlist and threadinfo packets. They are
1056 variable length packets but, the fields within them are often fixed
1057 length. They are redundent enough to send over UDP as is the
1058 remote protocol in general. There is a matching unit test module
1061 #define OPAQUETHREADBYTES 8
1063 /* a 64 bit opaque identifier */
1064 typedef unsigned char threadref
[OPAQUETHREADBYTES
];
1066 /* WARNING: This threadref data structure comes from the remote O.S.,
1067 libstub protocol encoding, and remote.c. it is not particularly
1070 /* Right now, the internal structure is int. We want it to be bigger.
1074 typedef int gdb_threadref
; /* Internal GDB thread reference. */
1076 /* gdb_ext_thread_info is an internal GDB data structure which is
1077 equivalent to the reply of the remote threadinfo packet. */
1079 struct gdb_ext_thread_info
1081 threadref threadid
; /* External form of thread reference. */
1082 int active
; /* Has state interesting to GDB?
1084 char display
[256]; /* Brief state display, name,
1085 blocked/suspended. */
1086 char shortname
[32]; /* To be used to name threads. */
1087 char more_display
[256]; /* Long info, statistics, queue depth,
1091 /* The volume of remote transfers can be limited by submitting
1092 a mask containing bits specifying the desired information.
1093 Use a union of these values as the 'selection' parameter to
1094 get_thread_info. FIXME: Make these TAG names more thread specific.
1097 #define TAG_THREADID 1
1098 #define TAG_EXISTS 2
1099 #define TAG_DISPLAY 4
1100 #define TAG_THREADNAME 8
1101 #define TAG_MOREDISPLAY 16
1103 #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2)
1105 char *unpack_varlen_hex (char *buff
, ULONGEST
*result
);
1107 static char *unpack_nibble (char *buf
, int *val
);
1109 static char *pack_nibble (char *buf
, int nibble
);
1111 static char *pack_hex_byte (char *pkt
, int /* unsigned char */ byte
);
1113 static char *unpack_byte (char *buf
, int *value
);
1115 static char *pack_int (char *buf
, int value
);
1117 static char *unpack_int (char *buf
, int *value
);
1119 static char *unpack_string (char *src
, char *dest
, int length
);
1121 static char *pack_threadid (char *pkt
, threadref
*id
);
1123 static char *unpack_threadid (char *inbuf
, threadref
*id
);
1125 void int_to_threadref (threadref
*id
, int value
);
1127 static int threadref_to_int (threadref
*ref
);
1129 static void copy_threadref (threadref
*dest
, threadref
*src
);
1131 static int threadmatch (threadref
*dest
, threadref
*src
);
1133 static char *pack_threadinfo_request (char *pkt
, int mode
,
1136 static int remote_unpack_thread_info_response (char *pkt
,
1137 threadref
*expectedref
,
1138 struct gdb_ext_thread_info
1142 static int remote_get_threadinfo (threadref
*threadid
,
1143 int fieldset
, /*TAG mask */
1144 struct gdb_ext_thread_info
*info
);
1146 static char *pack_threadlist_request (char *pkt
, int startflag
,
1148 threadref
*nextthread
);
1150 static int parse_threadlist_response (char *pkt
,
1152 threadref
*original_echo
,
1153 threadref
*resultlist
,
1156 static int remote_get_threadlist (int startflag
,
1157 threadref
*nextthread
,
1161 threadref
*threadlist
);
1163 typedef int (*rmt_thread_action
) (threadref
*ref
, void *context
);
1165 static int remote_threadlist_iterator (rmt_thread_action stepfunction
,
1166 void *context
, int looplimit
);
1168 static int remote_newthread_step (threadref
*ref
, void *context
);
1170 /* Encode 64 bits in 16 chars of hex. */
1172 static const char hexchars
[] = "0123456789abcdef";
1175 ishex (int ch
, int *val
)
1177 if ((ch
>= 'a') && (ch
<= 'f'))
1179 *val
= ch
- 'a' + 10;
1182 if ((ch
>= 'A') && (ch
<= 'F'))
1184 *val
= ch
- 'A' + 10;
1187 if ((ch
>= '0') && (ch
<= '9'))
1198 if (ch
>= 'a' && ch
<= 'f')
1199 return ch
- 'a' + 10;
1200 if (ch
>= '0' && ch
<= '9')
1202 if (ch
>= 'A' && ch
<= 'F')
1203 return ch
- 'A' + 10;
1208 stub_unpack_int (char *buff
, int fieldlength
)
1215 nibble
= stubhex (*buff
++);
1219 retval
= retval
<< 4;
1225 unpack_varlen_hex (char *buff
, /* packet to parse */
1229 ULONGEST retval
= 0;
1231 while (ishex (*buff
, &nibble
))
1234 retval
= retval
<< 4;
1235 retval
|= nibble
& 0x0f;
1242 unpack_nibble (char *buf
, int *val
)
1244 ishex (*buf
++, val
);
1249 pack_nibble (char *buf
, int nibble
)
1251 *buf
++ = hexchars
[(nibble
& 0x0f)];
1256 pack_hex_byte (char *pkt
, int byte
)
1258 *pkt
++ = hexchars
[(byte
>> 4) & 0xf];
1259 *pkt
++ = hexchars
[(byte
& 0xf)];
1264 unpack_byte (char *buf
, int *value
)
1266 *value
= stub_unpack_int (buf
, 2);
1271 pack_int (char *buf
, int value
)
1273 buf
= pack_hex_byte (buf
, (value
>> 24) & 0xff);
1274 buf
= pack_hex_byte (buf
, (value
>> 16) & 0xff);
1275 buf
= pack_hex_byte (buf
, (value
>> 8) & 0x0ff);
1276 buf
= pack_hex_byte (buf
, (value
& 0xff));
1281 unpack_int (char *buf
, int *value
)
1283 *value
= stub_unpack_int (buf
, 8);
1287 #if 0 /* Currently unused, uncomment when needed. */
1288 static char *pack_string (char *pkt
, char *string
);
1291 pack_string (char *pkt
, char *string
)
1296 len
= strlen (string
);
1298 len
= 200; /* Bigger than most GDB packets, junk??? */
1299 pkt
= pack_hex_byte (pkt
, len
);
1303 if ((ch
== '\0') || (ch
== '#'))
1304 ch
= '*'; /* Protect encapsulation. */
1309 #endif /* 0 (unused) */
1312 unpack_string (char *src
, char *dest
, int length
)
1321 pack_threadid (char *pkt
, threadref
*id
)
1324 unsigned char *altid
;
1326 altid
= (unsigned char *) id
;
1327 limit
= pkt
+ BUF_THREAD_ID_SIZE
;
1329 pkt
= pack_hex_byte (pkt
, *altid
++);
1335 unpack_threadid (char *inbuf
, threadref
*id
)
1338 char *limit
= inbuf
+ BUF_THREAD_ID_SIZE
;
1341 altref
= (char *) id
;
1343 while (inbuf
< limit
)
1345 x
= stubhex (*inbuf
++);
1346 y
= stubhex (*inbuf
++);
1347 *altref
++ = (x
<< 4) | y
;
1352 /* Externally, threadrefs are 64 bits but internally, they are still
1353 ints. This is due to a mismatch of specifications. We would like
1354 to use 64bit thread references internally. This is an adapter
1358 int_to_threadref (threadref
*id
, int value
)
1360 unsigned char *scan
;
1362 scan
= (unsigned char *) id
;
1368 *scan
++ = (value
>> 24) & 0xff;
1369 *scan
++ = (value
>> 16) & 0xff;
1370 *scan
++ = (value
>> 8) & 0xff;
1371 *scan
++ = (value
& 0xff);
1375 threadref_to_int (threadref
*ref
)
1378 unsigned char *scan
;
1384 value
= (value
<< 8) | ((*scan
++) & 0xff);
1389 copy_threadref (threadref
*dest
, threadref
*src
)
1392 unsigned char *csrc
, *cdest
;
1394 csrc
= (unsigned char *) src
;
1395 cdest
= (unsigned char *) dest
;
1402 threadmatch (threadref
*dest
, threadref
*src
)
1404 /* Things are broken right now, so just assume we got a match. */
1406 unsigned char *srcp
, *destp
;
1408 srcp
= (char *) src
;
1409 destp
= (char *) dest
;
1413 result
&= (*srcp
++ == *destp
++) ? 1 : 0;
1420 threadid:1, # always request threadid
1427 /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */
1430 pack_threadinfo_request (char *pkt
, int mode
, threadref
*id
)
1432 *pkt
++ = 'q'; /* Info Query */
1433 *pkt
++ = 'P'; /* process or thread info */
1434 pkt
= pack_int (pkt
, mode
); /* mode */
1435 pkt
= pack_threadid (pkt
, id
); /* threadid */
1436 *pkt
= '\0'; /* terminate */
1440 /* These values tag the fields in a thread info response packet. */
1441 /* Tagging the fields allows us to request specific fields and to
1442 add more fields as time goes by. */
1444 #define TAG_THREADID 1 /* Echo the thread identifier. */
1445 #define TAG_EXISTS 2 /* Is this process defined enough to
1446 fetch registers and its stack? */
1447 #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */
1448 #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */
1449 #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about
1453 remote_unpack_thread_info_response (char *pkt
, threadref
*expectedref
,
1454 struct gdb_ext_thread_info
*info
)
1456 struct remote_state
*rs
= get_remote_state ();
1460 char *limit
= pkt
+ rs
->buf_size
; /* Plausible parsing limit. */
1463 /* info->threadid = 0; FIXME: implement zero_threadref. */
1465 info
->display
[0] = '\0';
1466 info
->shortname
[0] = '\0';
1467 info
->more_display
[0] = '\0';
1469 /* Assume the characters indicating the packet type have been
1471 pkt
= unpack_int (pkt
, &mask
); /* arg mask */
1472 pkt
= unpack_threadid (pkt
, &ref
);
1475 warning (_("Incomplete response to threadinfo request."));
1476 if (!threadmatch (&ref
, expectedref
))
1477 { /* This is an answer to a different request. */
1478 warning (_("ERROR RMT Thread info mismatch."));
1481 copy_threadref (&info
->threadid
, &ref
);
1483 /* Loop on tagged fields , try to bail if somthing goes wrong. */
1485 /* Packets are terminated with nulls. */
1486 while ((pkt
< limit
) && mask
&& *pkt
)
1488 pkt
= unpack_int (pkt
, &tag
); /* tag */
1489 pkt
= unpack_byte (pkt
, &length
); /* length */
1490 if (!(tag
& mask
)) /* Tags out of synch with mask. */
1492 warning (_("ERROR RMT: threadinfo tag mismatch."));
1496 if (tag
== TAG_THREADID
)
1500 warning (_("ERROR RMT: length of threadid is not 16."));
1504 pkt
= unpack_threadid (pkt
, &ref
);
1505 mask
= mask
& ~TAG_THREADID
;
1508 if (tag
== TAG_EXISTS
)
1510 info
->active
= stub_unpack_int (pkt
, length
);
1512 mask
= mask
& ~(TAG_EXISTS
);
1515 warning (_("ERROR RMT: 'exists' length too long."));
1521 if (tag
== TAG_THREADNAME
)
1523 pkt
= unpack_string (pkt
, &info
->shortname
[0], length
);
1524 mask
= mask
& ~TAG_THREADNAME
;
1527 if (tag
== TAG_DISPLAY
)
1529 pkt
= unpack_string (pkt
, &info
->display
[0], length
);
1530 mask
= mask
& ~TAG_DISPLAY
;
1533 if (tag
== TAG_MOREDISPLAY
)
1535 pkt
= unpack_string (pkt
, &info
->more_display
[0], length
);
1536 mask
= mask
& ~TAG_MOREDISPLAY
;
1539 warning (_("ERROR RMT: unknown thread info tag."));
1540 break; /* Not a tag we know about. */
1546 remote_get_threadinfo (threadref
*threadid
, int fieldset
, /* TAG mask */
1547 struct gdb_ext_thread_info
*info
)
1549 struct remote_state
*rs
= get_remote_state ();
1552 pack_threadinfo_request (rs
->buf
, fieldset
, threadid
);
1554 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1555 result
= remote_unpack_thread_info_response (rs
->buf
+ 2,
1560 /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */
1563 pack_threadlist_request (char *pkt
, int startflag
, int threadcount
,
1564 threadref
*nextthread
)
1566 *pkt
++ = 'q'; /* info query packet */
1567 *pkt
++ = 'L'; /* Process LIST or threadLIST request */
1568 pkt
= pack_nibble (pkt
, startflag
); /* initflag 1 bytes */
1569 pkt
= pack_hex_byte (pkt
, threadcount
); /* threadcount 2 bytes */
1570 pkt
= pack_threadid (pkt
, nextthread
); /* 64 bit thread identifier */
1575 /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */
1578 parse_threadlist_response (char *pkt
, int result_limit
,
1579 threadref
*original_echo
, threadref
*resultlist
,
1582 struct remote_state
*rs
= get_remote_state ();
1584 int count
, resultcount
, done
;
1587 /* Assume the 'q' and 'M chars have been stripped. */
1588 limit
= pkt
+ (rs
->buf_size
- BUF_THREAD_ID_SIZE
);
1589 /* done parse past here */
1590 pkt
= unpack_byte (pkt
, &count
); /* count field */
1591 pkt
= unpack_nibble (pkt
, &done
);
1592 /* The first threadid is the argument threadid. */
1593 pkt
= unpack_threadid (pkt
, original_echo
); /* should match query packet */
1594 while ((count
-- > 0) && (pkt
< limit
))
1596 pkt
= unpack_threadid (pkt
, resultlist
++);
1597 if (resultcount
++ >= result_limit
)
1606 remote_get_threadlist (int startflag
, threadref
*nextthread
, int result_limit
,
1607 int *done
, int *result_count
, threadref
*threadlist
)
1609 struct remote_state
*rs
= get_remote_state ();
1610 static threadref echo_nextthread
;
1613 /* Trancate result limit to be smaller than the packet size. */
1614 if ((((result_limit
+ 1) * BUF_THREAD_ID_SIZE
) + 10) >= get_remote_packet_size ())
1615 result_limit
= (get_remote_packet_size () / BUF_THREAD_ID_SIZE
) - 2;
1617 pack_threadlist_request (rs
->buf
, startflag
, result_limit
, nextthread
);
1619 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1622 parse_threadlist_response (rs
->buf
+ 2, result_limit
, &echo_nextthread
,
1625 if (!threadmatch (&echo_nextthread
, nextthread
))
1627 /* FIXME: This is a good reason to drop the packet. */
1628 /* Possably, there is a duplicate response. */
1630 retransmit immediatly - race conditions
1631 retransmit after timeout - yes
1633 wait for packet, then exit
1635 warning (_("HMM: threadlist did not echo arg thread, dropping it."));
1636 return 0; /* I choose simply exiting. */
1638 if (*result_count
<= 0)
1642 warning (_("RMT ERROR : failed to get remote thread list."));
1645 return result
; /* break; */
1647 if (*result_count
> result_limit
)
1650 warning (_("RMT ERROR: threadlist response longer than requested."));
1656 /* This is the interface between remote and threads, remotes upper
1659 /* remote_find_new_threads retrieves the thread list and for each
1660 thread in the list, looks up the thread in GDB's internal list,
1661 ading the thread if it does not already exist. This involves
1662 getting partial thread lists from the remote target so, polling the
1663 quit_flag is required. */
1666 /* About this many threadisds fit in a packet. */
1668 #define MAXTHREADLISTRESULTS 32
1671 remote_threadlist_iterator (rmt_thread_action stepfunction
, void *context
,
1674 int done
, i
, result_count
;
1678 static threadref nextthread
;
1679 static threadref resultthreadlist
[MAXTHREADLISTRESULTS
];
1684 if (loopcount
++ > looplimit
)
1687 warning (_("Remote fetch threadlist -infinite loop-."));
1690 if (!remote_get_threadlist (startflag
, &nextthread
, MAXTHREADLISTRESULTS
,
1691 &done
, &result_count
, resultthreadlist
))
1696 /* Clear for later iterations. */
1698 /* Setup to resume next batch of thread references, set nextthread. */
1699 if (result_count
>= 1)
1700 copy_threadref (&nextthread
, &resultthreadlist
[result_count
- 1]);
1702 while (result_count
--)
1703 if (!(result
= (*stepfunction
) (&resultthreadlist
[i
++], context
)))
1710 remote_newthread_step (threadref
*ref
, void *context
)
1714 ptid
= pid_to_ptid (threadref_to_int (ref
));
1716 if (!in_thread_list (ptid
))
1718 return 1; /* continue iterator */
1721 #define CRAZY_MAX_THREADS 1000
1724 remote_current_thread (ptid_t oldpid
)
1726 struct remote_state
*rs
= get_remote_state ();
1729 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1730 if (rs
->buf
[0] == 'Q' && rs
->buf
[1] == 'C')
1731 /* Use strtoul here, so we'll correctly parse values whose highest
1732 bit is set. The protocol carries them as a simple series of
1733 hex digits; in the absence of a sign, strtol will see such
1734 values as positive numbers out of range for signed 'long', and
1735 return LONG_MAX to indicate an overflow. */
1736 return pid_to_ptid (strtoul (&rs
->buf
[2], NULL
, 16));
1741 /* Find new threads for info threads command.
1742 * Original version, using John Metzler's thread protocol.
1746 remote_find_new_threads (void)
1748 remote_threadlist_iterator (remote_newthread_step
, 0,
1750 if (PIDGET (inferior_ptid
) == MAGIC_NULL_PID
) /* ack ack ack */
1751 inferior_ptid
= remote_current_thread (inferior_ptid
);
1755 * Find all threads for info threads command.
1756 * Uses new thread protocol contributed by Cisco.
1757 * Falls back and attempts to use the older method (above)
1758 * if the target doesn't respond to the new method.
1762 remote_threads_info (void)
1764 struct remote_state
*rs
= get_remote_state ();
1768 if (remote_desc
== 0) /* paranoia */
1769 error (_("Command can only be used when connected to the remote target."));
1771 if (use_threadinfo_query
)
1773 putpkt ("qfThreadInfo");
1774 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1776 if (bufp
[0] != '\0') /* q packet recognized */
1778 while (*bufp
++ == 'm') /* reply contains one or more TID */
1782 /* Use strtoul here, so we'll correctly parse values
1783 whose highest bit is set. The protocol carries
1784 them as a simple series of hex digits; in the
1785 absence of a sign, strtol will see such values as
1786 positive numbers out of range for signed 'long',
1787 and return LONG_MAX to indicate an overflow. */
1788 tid
= strtoul (bufp
, &bufp
, 16);
1789 if (tid
!= 0 && !in_thread_list (pid_to_ptid (tid
)))
1790 add_thread (pid_to_ptid (tid
));
1792 while (*bufp
++ == ','); /* comma-separated list */
1793 putpkt ("qsThreadInfo");
1794 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1801 /* Else fall back to old method based on jmetzler protocol. */
1802 use_threadinfo_query
= 0;
1803 remote_find_new_threads ();
1808 * Collect a descriptive string about the given thread.
1809 * The target may say anything it wants to about the thread
1810 * (typically info about its blocked / runnable state, name, etc.).
1811 * This string will appear in the info threads display.
1813 * Optional: targets are not required to implement this function.
1817 remote_threads_extra_info (struct thread_info
*tp
)
1819 struct remote_state
*rs
= get_remote_state ();
1823 struct gdb_ext_thread_info threadinfo
;
1824 static char display_buf
[100]; /* arbitrary... */
1825 int n
= 0; /* position in display_buf */
1827 if (remote_desc
== 0) /* paranoia */
1828 internal_error (__FILE__
, __LINE__
,
1829 _("remote_threads_extra_info"));
1831 if (use_threadextra_query
)
1833 xsnprintf (rs
->buf
, get_remote_packet_size (), "qThreadExtraInfo,%x",
1836 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1837 if (rs
->buf
[0] != 0)
1839 n
= min (strlen (rs
->buf
) / 2, sizeof (display_buf
));
1840 result
= hex2bin (rs
->buf
, (gdb_byte
*) display_buf
, n
);
1841 display_buf
[result
] = '\0';
1846 /* If the above query fails, fall back to the old method. */
1847 use_threadextra_query
= 0;
1848 set
= TAG_THREADID
| TAG_EXISTS
| TAG_THREADNAME
1849 | TAG_MOREDISPLAY
| TAG_DISPLAY
;
1850 int_to_threadref (&id
, PIDGET (tp
->ptid
));
1851 if (remote_get_threadinfo (&id
, set
, &threadinfo
))
1852 if (threadinfo
.active
)
1854 if (*threadinfo
.shortname
)
1855 n
+= xsnprintf (&display_buf
[0], sizeof (display_buf
) - n
,
1856 " Name: %s,", threadinfo
.shortname
);
1857 if (*threadinfo
.display
)
1858 n
+= xsnprintf (&display_buf
[n
], sizeof (display_buf
) - n
,
1859 " State: %s,", threadinfo
.display
);
1860 if (*threadinfo
.more_display
)
1861 n
+= xsnprintf (&display_buf
[n
], sizeof (display_buf
) - n
,
1862 " Priority: %s", threadinfo
.more_display
);
1866 /* For purely cosmetic reasons, clear up trailing commas. */
1867 if (',' == display_buf
[n
-1])
1868 display_buf
[n
-1] = ' ';
1876 /* Restart the remote side; this is an extended protocol operation. */
1879 extended_remote_restart (void)
1881 struct remote_state
*rs
= get_remote_state ();
1883 /* Send the restart command; for reasons I don't understand the
1884 remote side really expects a number after the "R". */
1885 xsnprintf (rs
->buf
, get_remote_packet_size (), "R%x", 0);
1888 remote_fileio_reset ();
1890 /* Now query for status so this looks just like we restarted
1891 gdbserver from scratch. */
1893 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1896 /* Clean up connection to a remote debugger. */
1899 remote_close (int quitting
)
1902 serial_close (remote_desc
);
1906 /* Query the remote side for the text, data and bss offsets. */
1911 struct remote_state
*rs
= get_remote_state ();
1915 CORE_ADDR text_addr
, data_addr
, bss_addr
;
1916 struct section_offsets
*offs
;
1918 putpkt ("qOffsets");
1919 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1922 if (buf
[0] == '\000')
1923 return; /* Return silently. Stub doesn't support
1927 warning (_("Remote failure reply: %s"), buf
);
1931 /* Pick up each field in turn. This used to be done with scanf, but
1932 scanf will make trouble if CORE_ADDR size doesn't match
1933 conversion directives correctly. The following code will work
1934 with any size of CORE_ADDR. */
1935 text_addr
= data_addr
= bss_addr
= 0;
1939 if (strncmp (ptr
, "Text=", 5) == 0)
1942 /* Don't use strtol, could lose on big values. */
1943 while (*ptr
&& *ptr
!= ';')
1944 text_addr
= (text_addr
<< 4) + fromhex (*ptr
++);
1949 if (!lose
&& strncmp (ptr
, ";Data=", 6) == 0)
1952 while (*ptr
&& *ptr
!= ';')
1953 data_addr
= (data_addr
<< 4) + fromhex (*ptr
++);
1958 if (!lose
&& strncmp (ptr
, ";Bss=", 5) == 0)
1961 while (*ptr
&& *ptr
!= ';')
1962 bss_addr
= (bss_addr
<< 4) + fromhex (*ptr
++);
1968 error (_("Malformed response to offset query, %s"), buf
);
1970 if (symfile_objfile
== NULL
)
1973 offs
= ((struct section_offsets
*)
1974 alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
)));
1975 memcpy (offs
, symfile_objfile
->section_offsets
,
1976 SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
));
1978 offs
->offsets
[SECT_OFF_TEXT (symfile_objfile
)] = text_addr
;
1980 /* This is a temporary kludge to force data and bss to use the same offsets
1981 because that's what nlmconv does now. The real solution requires changes
1982 to the stub and remote.c that I don't have time to do right now. */
1984 offs
->offsets
[SECT_OFF_DATA (symfile_objfile
)] = data_addr
;
1985 offs
->offsets
[SECT_OFF_BSS (symfile_objfile
)] = data_addr
;
1987 objfile_relocate (symfile_objfile
, offs
);
1990 /* Stub for catch_errors. */
1993 remote_start_remote_dummy (struct ui_out
*uiout
, void *dummy
)
1995 start_remote (); /* Initialize gdb process mechanisms. */
1996 /* NOTE: Return something >=0. A -ve value is reserved for
1997 catch_exceptions. */
2002 remote_start_remote (struct ui_out
*uiout
, void *dummy
)
2004 immediate_quit
++; /* Allow user to interrupt it. */
2006 /* Ack any packet which the remote side has already sent. */
2007 serial_write (remote_desc
, "+", 1);
2009 /* Let the stub know that we want it to return the thread. */
2012 inferior_ptid
= remote_current_thread (inferior_ptid
);
2014 get_offsets (); /* Get text, data & bss offsets. */
2016 putpkt ("?"); /* Initiate a query from remote machine. */
2019 remote_start_remote_dummy (uiout
, dummy
);
2022 /* Open a connection to a remote debugger.
2023 NAME is the filename used for communication. */
2026 remote_open (char *name
, int from_tty
)
2028 remote_open_1 (name
, from_tty
, &remote_ops
, 0, 0);
2031 /* Just like remote_open, but with asynchronous support. */
2033 remote_async_open (char *name
, int from_tty
)
2035 remote_open_1 (name
, from_tty
, &remote_async_ops
, 0, 1);
2038 /* Open a connection to a remote debugger using the extended
2039 remote gdb protocol. NAME is the filename used for communication. */
2042 extended_remote_open (char *name
, int from_tty
)
2044 remote_open_1 (name
, from_tty
, &extended_remote_ops
, 1 /*extended_p */,
2048 /* Just like extended_remote_open, but with asynchronous support. */
2050 extended_remote_async_open (char *name
, int from_tty
)
2052 remote_open_1 (name
, from_tty
, &extended_async_remote_ops
,
2053 1 /*extended_p */, 1 /* async_p */);
2056 /* Generic code for opening a connection to a remote target. */
2059 init_all_packet_configs (void)
2062 for (i
= 0; i
< PACKET_MAX
; i
++)
2063 update_packet_config (&remote_protocol_packets
[i
]);
2066 /* Symbol look-up. */
2069 remote_check_symbols (struct objfile
*objfile
)
2071 struct remote_state
*rs
= get_remote_state ();
2072 char *msg
, *reply
, *tmp
;
2073 struct minimal_symbol
*sym
;
2076 if (remote_protocol_packets
[PACKET_qSymbol
].support
== PACKET_DISABLE
)
2079 /* Allocate a message buffer. We can't reuse the input buffer in RS,
2080 because we need both at the same time. */
2081 msg
= alloca (get_remote_packet_size ());
2083 /* Invite target to request symbol lookups. */
2085 putpkt ("qSymbol::");
2086 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2087 packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_qSymbol
]);
2090 while (strncmp (reply
, "qSymbol:", 8) == 0)
2093 end
= hex2bin (tmp
, (gdb_byte
*) msg
, strlen (tmp
) / 2);
2095 sym
= lookup_minimal_symbol (msg
, NULL
, NULL
);
2097 xsnprintf (msg
, get_remote_packet_size (), "qSymbol::%s", &reply
[8]);
2099 xsnprintf (msg
, get_remote_packet_size (), "qSymbol:%s:%s",
2100 paddr_nz (SYMBOL_VALUE_ADDRESS (sym
)),
2103 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2108 static struct serial
*
2109 remote_serial_open (char *name
)
2111 static int udp_warning
= 0;
2113 /* FIXME: Parsing NAME here is a hack. But we want to warn here instead
2114 of in ser-tcp.c, because it is the remote protocol assuming that the
2115 serial connection is reliable and not the serial connection promising
2117 if (!udp_warning
&& strncmp (name
, "udp:", 4) == 0)
2120 The remote protocol may be unreliable over UDP.\n\
2121 Some events may be lost, rendering further debugging impossible."));
2125 return serial_open (name
);
2128 /* This type describes each known response to the qSupported
2130 struct protocol_feature
2132 /* The name of this protocol feature. */
2135 /* The default for this protocol feature. */
2136 enum packet_support default_support
;
2138 /* The function to call when this feature is reported, or after
2139 qSupported processing if the feature is not supported.
2140 The first argument points to this structure. The second
2141 argument indicates whether the packet requested support be
2142 enabled, disabled, or probed (or the default, if this function
2143 is being called at the end of processing and this feature was
2144 not reported). The third argument may be NULL; if not NULL, it
2145 is a NUL-terminated string taken from the packet following
2146 this feature's name and an equals sign. */
2147 void (*func
) (const struct protocol_feature
*, enum packet_support
,
2150 /* The corresponding packet for this feature. Only used if
2151 FUNC is remote_supported_packet. */
2156 remote_supported_packet (const struct protocol_feature
*feature
,
2157 enum packet_support support
,
2158 const char *argument
)
2162 warning (_("Remote qSupported response supplied an unexpected value for"
2163 " \"%s\"."), feature
->name
);
2167 if (remote_protocol_packets
[feature
->packet
].support
2168 == PACKET_SUPPORT_UNKNOWN
)
2169 remote_protocol_packets
[feature
->packet
].support
= support
;
2173 remote_packet_size (const struct protocol_feature
*feature
,
2174 enum packet_support support
, const char *value
)
2176 struct remote_state
*rs
= get_remote_state ();
2181 if (support
!= PACKET_ENABLE
)
2184 if (value
== NULL
|| *value
== '\0')
2186 warning (_("Remote target reported \"%s\" without a size."),
2192 packet_size
= strtol (value
, &value_end
, 16);
2193 if (errno
!= 0 || *value_end
!= '\0' || packet_size
< 0)
2195 warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."),
2196 feature
->name
, value
);
2200 if (packet_size
> MAX_REMOTE_PACKET_SIZE
)
2202 warning (_("limiting remote suggested packet size (%d bytes) to %d"),
2203 packet_size
, MAX_REMOTE_PACKET_SIZE
);
2204 packet_size
= MAX_REMOTE_PACKET_SIZE
;
2207 /* Record the new maximum packet size. */
2208 rs
->explicit_packet_size
= packet_size
;
2211 static struct protocol_feature remote_protocol_features
[] = {
2212 { "PacketSize", PACKET_DISABLE
, remote_packet_size
, -1 },
2213 { "qXfer:auxv:read", PACKET_DISABLE
, remote_supported_packet
,
2214 PACKET_qXfer_auxv
},
2215 { "qXfer:memory-map:read", PACKET_DISABLE
, remote_supported_packet
,
2216 PACKET_qXfer_memory_map
}
2220 remote_query_supported (void)
2222 struct remote_state
*rs
= get_remote_state ();
2225 unsigned char seen
[ARRAY_SIZE (remote_protocol_features
)];
2227 /* The packet support flags are handled differently for this packet
2228 than for most others. We treat an error, a disabled packet, and
2229 an empty response identically: any features which must be reported
2230 to be used will be automatically disabled. An empty buffer
2231 accomplishes this, since that is also the representation for a list
2232 containing no features. */
2235 if (remote_protocol_packets
[PACKET_qSupported
].support
!= PACKET_DISABLE
)
2237 putpkt ("qSupported");
2238 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2240 /* If an error occured, warn, but do not return - just reset the
2241 buffer to empty and go on to disable features. */
2242 if (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_qSupported
])
2245 warning (_("Remote failure reply: %s"), rs
->buf
);
2250 memset (seen
, 0, sizeof (seen
));
2255 enum packet_support is_supported
;
2256 char *p
, *end
, *name_end
, *value
;
2258 /* First separate out this item from the rest of the packet. If
2259 there's another item after this, we overwrite the separator
2260 (terminated strings are much easier to work with). */
2262 end
= strchr (p
, ';');
2265 end
= p
+ strlen (p
);
2272 warning (_("empty item in \"qSupported\" response"));
2280 name_end
= strchr (p
, '=');
2283 /* This is a name=value entry. */
2284 is_supported
= PACKET_ENABLE
;
2285 value
= name_end
+ 1;
2294 is_supported
= PACKET_ENABLE
;
2298 is_supported
= PACKET_DISABLE
;
2302 is_supported
= PACKET_SUPPORT_UNKNOWN
;
2306 warning (_("unrecognized item \"%s\" in \"qSupported\" response"), p
);
2312 for (i
= 0; i
< ARRAY_SIZE (remote_protocol_features
); i
++)
2313 if (strcmp (remote_protocol_features
[i
].name
, p
) == 0)
2315 const struct protocol_feature
*feature
;
2318 feature
= &remote_protocol_features
[i
];
2319 feature
->func (feature
, is_supported
, value
);
2324 /* If we increased the packet size, make sure to increase the global
2325 buffer size also. We delay this until after parsing the entire
2326 qSupported packet, because this is the same buffer we were
2328 if (rs
->buf_size
< rs
->explicit_packet_size
)
2330 rs
->buf_size
= rs
->explicit_packet_size
;
2331 rs
->buf
= xrealloc (rs
->buf
, rs
->buf_size
);
2334 /* Handle the defaults for unmentioned features. */
2335 for (i
= 0; i
< ARRAY_SIZE (remote_protocol_features
); i
++)
2338 const struct protocol_feature
*feature
;
2340 feature
= &remote_protocol_features
[i
];
2341 feature
->func (feature
, feature
->default_support
, NULL
);
2347 remote_open_1 (char *name
, int from_tty
, struct target_ops
*target
,
2348 int extended_p
, int async_p
)
2350 struct remote_state
*rs
= get_remote_state ();
2352 error (_("To open a remote debug connection, you need to specify what\n"
2353 "serial device is attached to the remote system\n"
2354 "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."));
2356 /* See FIXME above. */
2358 wait_forever_enabled_p
= 1;
2360 target_preopen (from_tty
);
2362 unpush_target (target
);
2364 remote_fileio_reset ();
2365 reopen_exec_file ();
2368 remote_desc
= remote_serial_open (name
);
2370 perror_with_name (name
);
2372 if (baud_rate
!= -1)
2374 if (serial_setbaudrate (remote_desc
, baud_rate
))
2376 /* The requested speed could not be set. Error out to
2377 top level after closing remote_desc. Take care to
2378 set remote_desc to NULL to avoid closing remote_desc
2380 serial_close (remote_desc
);
2382 perror_with_name (name
);
2386 serial_raw (remote_desc
);
2388 /* If there is something sitting in the buffer we might take it as a
2389 response to a command, which would be bad. */
2390 serial_flush_input (remote_desc
);
2394 puts_filtered ("Remote debugging using ");
2395 puts_filtered (name
);
2396 puts_filtered ("\n");
2398 push_target (target
); /* Switch to using remote target now. */
2400 /* Reset the target state; these things will be queried either by
2401 remote_query_supported or as they are needed. */
2402 init_all_packet_configs ();
2403 rs
->explicit_packet_size
= 0;
2405 general_thread
= -2;
2406 continue_thread
= -2;
2408 /* Probe for ability to use "ThreadInfo" query, as required. */
2409 use_threadinfo_query
= 1;
2410 use_threadextra_query
= 1;
2412 /* The first packet we send to the target is the optional "supported
2413 packets" request. If the target can answer this, it will tell us
2414 which later probes to skip. */
2415 remote_query_supported ();
2417 /* Without this, some commands which require an active target (such
2418 as kill) won't work. This variable serves (at least) double duty
2419 as both the pid of the target process (if it has such), and as a
2420 flag indicating that a target is active. These functions should
2421 be split out into seperate variables, especially since GDB will
2422 someday have a notion of debugging several processes. */
2424 inferior_ptid
= pid_to_ptid (MAGIC_NULL_PID
);
2428 /* With this target we start out by owning the terminal. */
2429 remote_async_terminal_ours_p
= 1;
2431 /* FIXME: cagney/1999-09-23: During the initial connection it is
2432 assumed that the target is already ready and able to respond to
2433 requests. Unfortunately remote_start_remote() eventually calls
2434 wait_for_inferior() with no timeout. wait_forever_enabled_p gets
2435 around this. Eventually a mechanism that allows
2436 wait_for_inferior() to expect/get timeouts will be
2438 wait_forever_enabled_p
= 0;
2441 /* First delete any symbols previously loaded from shared libraries. */
2442 no_shared_libraries (NULL
, 0);
2444 /* Start the remote connection. If error() or QUIT, discard this
2445 target (we'd otherwise be in an inconsistent state) and then
2446 propogate the error on up the exception chain. This ensures that
2447 the caller doesn't stumble along blindly assuming that the
2448 function succeeded. The CLI doesn't have this problem but other
2449 UI's, such as MI do.
2451 FIXME: cagney/2002-05-19: Instead of re-throwing the exception,
2452 this function should return an error indication letting the
2453 caller restore the previous state. Unfortunately the command
2454 ``target remote'' is directly wired to this function making that
2455 impossible. On a positive note, the CLI side of this problem has
2456 been fixed - the function set_cmd_context() makes it possible for
2457 all the ``target ....'' commands to share a common callback
2458 function. See cli-dump.c. */
2460 struct gdb_exception ex
2461 = catch_exception (uiout
, remote_start_remote
, NULL
, RETURN_MASK_ALL
);
2466 wait_forever_enabled_p
= 1;
2467 throw_exception (ex
);
2472 wait_forever_enabled_p
= 1;
2476 /* Tell the remote that we are using the extended protocol. */
2478 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2481 post_create_inferior (¤t_target
, from_tty
);
2483 if (exec_bfd
) /* No use without an exec file. */
2484 remote_check_symbols (symfile_objfile
);
2487 /* This takes a program previously attached to and detaches it. After
2488 this is done, GDB can be used to debug some other program. We
2489 better not have left any breakpoints in the target program or it'll
2490 die when it hits one. */
2493 remote_detach (char *args
, int from_tty
)
2495 struct remote_state
*rs
= get_remote_state ();
2498 error (_("Argument given to \"detach\" when remotely debugging."));
2500 /* Tell the remote target to detach. */
2501 strcpy (rs
->buf
, "D");
2502 remote_send (&rs
->buf
, &rs
->buf_size
);
2504 /* Unregister the file descriptor from the event loop. */
2505 if (target_is_async_p ())
2506 serial_async (remote_desc
, NULL
, 0);
2508 target_mourn_inferior ();
2510 puts_filtered ("Ending remote debugging.\n");
2513 /* Same as remote_detach, but don't send the "D" packet; just disconnect. */
2516 remote_disconnect (struct target_ops
*target
, char *args
, int from_tty
)
2519 error (_("Argument given to \"detach\" when remotely debugging."));
2521 /* Unregister the file descriptor from the event loop. */
2522 if (target_is_async_p ())
2523 serial_async (remote_desc
, NULL
, 0);
2525 target_mourn_inferior ();
2527 puts_filtered ("Ending remote debugging.\n");
2530 /* Convert hex digit A to a number. */
2535 if (a
>= '0' && a
<= '9')
2537 else if (a
>= 'a' && a
<= 'f')
2538 return a
- 'a' + 10;
2539 else if (a
>= 'A' && a
<= 'F')
2540 return a
- 'A' + 10;
2542 error (_("Reply contains invalid hex digit %d"), a
);
2546 hex2bin (const char *hex
, gdb_byte
*bin
, int count
)
2550 for (i
= 0; i
< count
; i
++)
2552 if (hex
[0] == 0 || hex
[1] == 0)
2554 /* Hex string is short, or of uneven length.
2555 Return the count that has been converted so far. */
2558 *bin
++ = fromhex (hex
[0]) * 16 + fromhex (hex
[1]);
2564 /* Convert number NIB to a hex digit. */
2572 return 'a' + nib
- 10;
2576 bin2hex (const gdb_byte
*bin
, char *hex
, int count
)
2579 /* May use a length, or a nul-terminated string as input. */
2581 count
= strlen ((char *) bin
);
2583 for (i
= 0; i
< count
; i
++)
2585 *hex
++ = tohex ((*bin
>> 4) & 0xf);
2586 *hex
++ = tohex (*bin
++ & 0xf);
2592 /* Check for the availability of vCont. This function should also check
2596 remote_vcont_probe (struct remote_state
*rs
)
2600 strcpy (rs
->buf
, "vCont?");
2602 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2605 /* Make sure that the features we assume are supported. */
2606 if (strncmp (buf
, "vCont", 5) == 0)
2609 int support_s
, support_S
, support_c
, support_C
;
2615 while (p
&& *p
== ';')
2618 if (*p
== 's' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
2620 else if (*p
== 'S' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
2622 else if (*p
== 'c' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
2624 else if (*p
== 'C' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
2627 p
= strchr (p
, ';');
2630 /* If s, S, c, and C are not all supported, we can't use vCont. Clearing
2631 BUF will make packet_ok disable the packet. */
2632 if (!support_s
|| !support_S
|| !support_c
|| !support_C
)
2636 packet_ok (buf
, &remote_protocol_packets
[PACKET_vCont
]);
2639 /* Resume the remote inferior by using a "vCont" packet. The thread
2640 to be resumed is PTID; STEP and SIGGNAL indicate whether the
2641 resumed thread should be single-stepped and/or signalled. If PTID's
2642 PID is -1, then all threads are resumed; the thread to be stepped and/or
2643 signalled is given in the global INFERIOR_PTID. This function returns
2644 non-zero iff it resumes the inferior.
2646 This function issues a strict subset of all possible vCont commands at the
2650 remote_vcont_resume (ptid_t ptid
, int step
, enum target_signal siggnal
)
2652 struct remote_state
*rs
= get_remote_state ();
2653 int pid
= PIDGET (ptid
);
2654 char *buf
= NULL
, *outbuf
;
2655 struct cleanup
*old_cleanup
;
2657 if (remote_protocol_packets
[PACKET_vCont
].support
== PACKET_SUPPORT_UNKNOWN
)
2658 remote_vcont_probe (rs
);
2660 if (remote_protocol_packets
[PACKET_vCont
].support
== PACKET_DISABLE
)
2663 /* If we could generate a wider range of packets, we'd have to worry
2664 about overflowing BUF. Should there be a generic
2665 "multi-part-packet" packet? */
2667 if (PIDGET (inferior_ptid
) == MAGIC_NULL_PID
)
2669 /* MAGIC_NULL_PTID means that we don't have any active threads, so we
2670 don't have any PID numbers the inferior will understand. Make sure
2671 to only send forms that do not specify a PID. */
2672 if (step
&& siggnal
!= TARGET_SIGNAL_0
)
2673 outbuf
= xstrprintf ("vCont;S%02x", siggnal
);
2675 outbuf
= xstrprintf ("vCont;s");
2676 else if (siggnal
!= TARGET_SIGNAL_0
)
2677 outbuf
= xstrprintf ("vCont;C%02x", siggnal
);
2679 outbuf
= xstrprintf ("vCont;c");
2683 /* Resume all threads, with preference for INFERIOR_PTID. */
2684 if (step
&& siggnal
!= TARGET_SIGNAL_0
)
2685 outbuf
= xstrprintf ("vCont;S%02x:%x;c", siggnal
,
2686 PIDGET (inferior_ptid
));
2688 outbuf
= xstrprintf ("vCont;s:%x;c", PIDGET (inferior_ptid
));
2689 else if (siggnal
!= TARGET_SIGNAL_0
)
2690 outbuf
= xstrprintf ("vCont;C%02x:%x;c", siggnal
,
2691 PIDGET (inferior_ptid
));
2693 outbuf
= xstrprintf ("vCont;c");
2697 /* Scheduler locking; resume only PTID. */
2698 if (step
&& siggnal
!= TARGET_SIGNAL_0
)
2699 outbuf
= xstrprintf ("vCont;S%02x:%x", siggnal
, pid
);
2701 outbuf
= xstrprintf ("vCont;s:%x", pid
);
2702 else if (siggnal
!= TARGET_SIGNAL_0
)
2703 outbuf
= xstrprintf ("vCont;C%02x:%x", siggnal
, pid
);
2705 outbuf
= xstrprintf ("vCont;c:%x", pid
);
2708 gdb_assert (outbuf
&& strlen (outbuf
) < get_remote_packet_size ());
2709 old_cleanup
= make_cleanup (xfree
, outbuf
);
2713 do_cleanups (old_cleanup
);
2718 /* Tell the remote machine to resume. */
2720 static enum target_signal last_sent_signal
= TARGET_SIGNAL_0
;
2722 static int last_sent_step
;
2725 remote_resume (ptid_t ptid
, int step
, enum target_signal siggnal
)
2727 struct remote_state
*rs
= get_remote_state ();
2729 int pid
= PIDGET (ptid
);
2731 last_sent_signal
= siggnal
;
2732 last_sent_step
= step
;
2734 /* A hook for when we need to do something at the last moment before
2736 if (deprecated_target_resume_hook
)
2737 (*deprecated_target_resume_hook
) ();
2739 /* The vCont packet doesn't need to specify threads via Hc. */
2740 if (remote_vcont_resume (ptid
, step
, siggnal
))
2743 /* All other supported resume packets do use Hc, so call set_thread. */
2745 set_thread (0, 0); /* Run any thread. */
2747 set_thread (pid
, 0); /* Run this thread. */
2750 if (siggnal
!= TARGET_SIGNAL_0
)
2752 buf
[0] = step
? 'S' : 'C';
2753 buf
[1] = tohex (((int) siggnal
>> 4) & 0xf);
2754 buf
[2] = tohex (((int) siggnal
) & 0xf);
2758 strcpy (buf
, step
? "s" : "c");
2763 /* Same as remote_resume, but with async support. */
2765 remote_async_resume (ptid_t ptid
, int step
, enum target_signal siggnal
)
2767 remote_resume (ptid
, step
, siggnal
);
2769 /* We are about to start executing the inferior, let's register it
2770 with the event loop. NOTE: this is the one place where all the
2771 execution commands end up. We could alternatively do this in each
2772 of the execution commands in infcmd.c. */
2773 /* FIXME: ezannoni 1999-09-28: We may need to move this out of here
2774 into infcmd.c in order to allow inferior function calls to work
2775 NOT asynchronously. */
2776 if (target_can_async_p ())
2777 target_async (inferior_event_handler
, 0);
2778 /* Tell the world that the target is now executing. */
2779 /* FIXME: cagney/1999-09-23: Is it the targets responsibility to set
2780 this? Instead, should the client of target just assume (for
2781 async targets) that the target is going to start executing? Is
2782 this information already found in the continuation block? */
2783 if (target_is_async_p ())
2784 target_executing
= 1;
2788 /* Set up the signal handler for SIGINT, while the target is
2789 executing, ovewriting the 'regular' SIGINT signal handler. */
2791 initialize_sigint_signal_handler (void)
2793 sigint_remote_token
=
2794 create_async_signal_handler (async_remote_interrupt
, NULL
);
2795 signal (SIGINT
, handle_remote_sigint
);
2798 /* Signal handler for SIGINT, while the target is executing. */
2800 handle_remote_sigint (int sig
)
2802 signal (sig
, handle_remote_sigint_twice
);
2803 sigint_remote_twice_token
=
2804 create_async_signal_handler (async_remote_interrupt_twice
, NULL
);
2805 mark_async_signal_handler_wrapper (sigint_remote_token
);
2808 /* Signal handler for SIGINT, installed after SIGINT has already been
2809 sent once. It will take effect the second time that the user sends
2812 handle_remote_sigint_twice (int sig
)
2814 signal (sig
, handle_sigint
);
2815 sigint_remote_twice_token
=
2816 create_async_signal_handler (inferior_event_handler_wrapper
, NULL
);
2817 mark_async_signal_handler_wrapper (sigint_remote_twice_token
);
2820 /* Perform the real interruption of the target execution, in response
2823 async_remote_interrupt (gdb_client_data arg
)
2826 fprintf_unfiltered (gdb_stdlog
, "remote_interrupt called\n");
2831 /* Perform interrupt, if the first attempt did not succeed. Just give
2832 up on the target alltogether. */
2834 async_remote_interrupt_twice (gdb_client_data arg
)
2837 fprintf_unfiltered (gdb_stdlog
, "remote_interrupt_twice called\n");
2838 /* Do something only if the target was not killed by the previous
2840 if (target_executing
)
2843 signal (SIGINT
, handle_remote_sigint
);
2847 /* Reinstall the usual SIGINT handlers, after the target has
2850 cleanup_sigint_signal_handler (void *dummy
)
2852 signal (SIGINT
, handle_sigint
);
2853 if (sigint_remote_twice_token
)
2854 delete_async_signal_handler ((struct async_signal_handler
**)
2855 &sigint_remote_twice_token
);
2856 if (sigint_remote_token
)
2857 delete_async_signal_handler ((struct async_signal_handler
**)
2858 &sigint_remote_token
);
2861 /* Send ^C to target to halt it. Target will respond, and send us a
2863 static void (*ofunc
) (int);
2865 /* The command line interface's stop routine. This function is installed
2866 as a signal handler for SIGINT. The first time a user requests a
2867 stop, we call remote_stop to send a break or ^C. If there is no
2868 response from the target (it didn't stop when the user requested it),
2869 we ask the user if he'd like to detach from the target. */
2871 remote_interrupt (int signo
)
2873 /* If this doesn't work, try more severe steps. */
2874 signal (signo
, remote_interrupt_twice
);
2877 fprintf_unfiltered (gdb_stdlog
, "remote_interrupt called\n");
2882 /* The user typed ^C twice. */
2885 remote_interrupt_twice (int signo
)
2887 signal (signo
, ofunc
);
2889 signal (signo
, remote_interrupt
);
2892 /* This is the generic stop called via the target vector. When a target
2893 interrupt is requested, either by the command line or the GUI, we
2894 will eventually end up here. */
2898 /* Send a break or a ^C, depending on user preference. */
2900 fprintf_unfiltered (gdb_stdlog
, "remote_stop called\n");
2903 serial_send_break (remote_desc
);
2905 serial_write (remote_desc
, "\003", 1);
2908 /* Ask the user what to do when an interrupt is received. */
2911 interrupt_query (void)
2913 target_terminal_ours ();
2915 if (query ("Interrupted while waiting for the program.\n\
2916 Give up (and stop debugging it)? "))
2918 target_mourn_inferior ();
2919 deprecated_throw_reason (RETURN_QUIT
);
2922 target_terminal_inferior ();
2925 /* Enable/disable target terminal ownership. Most targets can use
2926 terminal groups to control terminal ownership. Remote targets are
2927 different in that explicit transfer of ownership to/from GDB/target
2931 remote_async_terminal_inferior (void)
2933 /* FIXME: cagney/1999-09-27: Shouldn't need to test for
2934 sync_execution here. This function should only be called when
2935 GDB is resuming the inferior in the forground. A background
2936 resume (``run&'') should leave GDB in control of the terminal and
2937 consequently should not call this code. */
2938 if (!sync_execution
)
2940 /* FIXME: cagney/1999-09-27: Closely related to the above. Make
2941 calls target_terminal_*() idenpotent. The event-loop GDB talking
2942 to an asynchronous target with a synchronous command calls this
2943 function from both event-top.c and infrun.c/infcmd.c. Once GDB
2944 stops trying to transfer the terminal to the target when it
2945 shouldn't this guard can go away. */
2946 if (!remote_async_terminal_ours_p
)
2948 delete_file_handler (input_fd
);
2949 remote_async_terminal_ours_p
= 0;
2950 initialize_sigint_signal_handler ();
2951 /* NOTE: At this point we could also register our selves as the
2952 recipient of all input. Any characters typed could then be
2953 passed on down to the target. */
2957 remote_async_terminal_ours (void)
2959 /* See FIXME in remote_async_terminal_inferior. */
2960 if (!sync_execution
)
2962 /* See FIXME in remote_async_terminal_inferior. */
2963 if (remote_async_terminal_ours_p
)
2965 cleanup_sigint_signal_handler (NULL
);
2966 add_file_handler (input_fd
, stdin_event_handler
, 0);
2967 remote_async_terminal_ours_p
= 1;
2970 /* If nonzero, ignore the next kill. */
2975 remote_console_output (char *msg
)
2979 for (p
= msg
; p
[0] && p
[1]; p
+= 2)
2982 char c
= fromhex (p
[0]) * 16 + fromhex (p
[1]);
2985 fputs_unfiltered (tb
, gdb_stdtarg
);
2987 gdb_flush (gdb_stdtarg
);
2990 /* Wait until the remote machine stops, then return,
2991 storing status in STATUS just as `wait' would.
2992 Returns "pid", which in the case of a multi-threaded
2993 remote OS, is the thread-id. */
2996 remote_wait (ptid_t ptid
, struct target_waitstatus
*status
)
2998 struct remote_state
*rs
= get_remote_state ();
2999 struct remote_arch_state
*rsa
= get_remote_arch_state ();
3000 ULONGEST thread_num
= -1;
3003 status
->kind
= TARGET_WAITKIND_EXITED
;
3004 status
->value
.integer
= 0;
3010 ofunc
= signal (SIGINT
, remote_interrupt
);
3011 getpkt (&rs
->buf
, &rs
->buf_size
, 1);
3012 signal (SIGINT
, ofunc
);
3016 /* This is a hook for when we need to do something (perhaps the
3017 collection of trace data) every time the target stops. */
3018 if (deprecated_target_wait_loop_hook
)
3019 (*deprecated_target_wait_loop_hook
) ();
3021 remote_stopped_by_watchpoint_p
= 0;
3025 case 'E': /* Error of some sort. */
3026 warning (_("Remote failure reply: %s"), buf
);
3028 case 'F': /* File-I/O request. */
3029 remote_fileio_request (buf
);
3031 case 'T': /* Status with PC, SP, FP, ... */
3033 gdb_byte regs
[MAX_REGISTER_SIZE
];
3035 /* Expedited reply, containing Signal, {regno, reg} repeat. */
3036 /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where
3038 n... = register number
3039 r... = register contents
3041 p
= &buf
[3]; /* after Txx */
3050 /* If the packet contains a register number save it in
3051 pnum and set p1 to point to the character following
3052 it. Otherwise p1 points to p. */
3054 /* If this packet is an awatch packet, don't parse the
3055 'a' as a register number. */
3057 if (strncmp (p
, "awatch", strlen("awatch")) != 0)
3059 /* Read the ``P'' register number. */
3060 pnum
= strtol (p
, &p_temp
, 16);
3066 if (p1
== p
) /* No register number present here. */
3068 p1
= strchr (p
, ':');
3070 error (_("Malformed packet(a) (missing colon): %s\n\
3073 if (strncmp (p
, "thread", p1
- p
) == 0)
3075 p_temp
= unpack_varlen_hex (++p1
, &thread_num
);
3076 record_currthread (thread_num
);
3079 else if ((strncmp (p
, "watch", p1
- p
) == 0)
3080 || (strncmp (p
, "rwatch", p1
- p
) == 0)
3081 || (strncmp (p
, "awatch", p1
- p
) == 0))
3083 remote_stopped_by_watchpoint_p
= 1;
3084 p
= unpack_varlen_hex (++p1
, &addr
);
3085 remote_watch_data_address
= (CORE_ADDR
)addr
;
3089 /* Silently skip unknown optional info. */
3090 p_temp
= strchr (p1
+ 1, ';');
3097 struct packet_reg
*reg
= packet_reg_from_pnum (rsa
, pnum
);
3101 error (_("Malformed packet(b) (missing colon): %s\n\
3106 error (_("Remote sent bad register number %s: %s\n\
3108 phex_nz (pnum
, 0), p
, buf
);
3110 fieldsize
= hex2bin (p
, regs
,
3111 register_size (current_gdbarch
,
3114 if (fieldsize
< register_size (current_gdbarch
,
3116 warning (_("Remote reply is too short: %s"), buf
);
3117 regcache_raw_supply (current_regcache
,
3122 error (_("Remote register badly formatted: %s\nhere: %s"),
3127 case 'S': /* Old style status, just signal only. */
3128 status
->kind
= TARGET_WAITKIND_STOPPED
;
3129 status
->value
.sig
= (enum target_signal
)
3130 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
3134 thread_num
= strtol ((const char *) &buf
[4], NULL
, 16);
3135 record_currthread (thread_num
);
3138 case 'W': /* Target exited. */
3140 /* The remote process exited. */
3141 status
->kind
= TARGET_WAITKIND_EXITED
;
3142 status
->value
.integer
= (fromhex (buf
[1]) << 4) + fromhex (buf
[2]);
3146 status
->kind
= TARGET_WAITKIND_SIGNALLED
;
3147 status
->value
.sig
= (enum target_signal
)
3148 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
3152 case 'O': /* Console output. */
3153 remote_console_output (buf
+ 1);
3156 if (last_sent_signal
!= TARGET_SIGNAL_0
)
3158 /* Zero length reply means that we tried 'S' or 'C' and
3159 the remote system doesn't support it. */
3160 target_terminal_ours_for_output ();
3162 ("Can't send signals to this remote system. %s not sent.\n",
3163 target_signal_to_name (last_sent_signal
));
3164 last_sent_signal
= TARGET_SIGNAL_0
;
3165 target_terminal_inferior ();
3167 strcpy ((char *) buf
, last_sent_step
? "s" : "c");
3168 putpkt ((char *) buf
);
3171 /* else fallthrough */
3173 warning (_("Invalid remote reply: %s"), buf
);
3178 if (thread_num
!= -1)
3180 return pid_to_ptid (thread_num
);
3182 return inferior_ptid
;
3185 /* Async version of remote_wait. */
3187 remote_async_wait (ptid_t ptid
, struct target_waitstatus
*status
)
3189 struct remote_state
*rs
= get_remote_state ();
3190 struct remote_arch_state
*rsa
= get_remote_arch_state ();
3191 ULONGEST thread_num
= -1;
3194 status
->kind
= TARGET_WAITKIND_EXITED
;
3195 status
->value
.integer
= 0;
3197 remote_stopped_by_watchpoint_p
= 0;
3203 if (!target_is_async_p ())
3204 ofunc
= signal (SIGINT
, remote_interrupt
);
3205 /* FIXME: cagney/1999-09-27: If we're in async mode we should
3206 _never_ wait for ever -> test on target_is_async_p().
3207 However, before we do that we need to ensure that the caller
3208 knows how to take the target into/out of async mode. */
3209 getpkt (&rs
->buf
, &rs
->buf_size
, wait_forever_enabled_p
);
3210 if (!target_is_async_p ())
3211 signal (SIGINT
, ofunc
);
3215 /* This is a hook for when we need to do something (perhaps the
3216 collection of trace data) every time the target stops. */
3217 if (deprecated_target_wait_loop_hook
)
3218 (*deprecated_target_wait_loop_hook
) ();
3222 case 'E': /* Error of some sort. */
3223 warning (_("Remote failure reply: %s"), buf
);
3225 case 'F': /* File-I/O request. */
3226 remote_fileio_request (buf
);
3228 case 'T': /* Status with PC, SP, FP, ... */
3230 gdb_byte regs
[MAX_REGISTER_SIZE
];
3232 /* Expedited reply, containing Signal, {regno, reg} repeat. */
3233 /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where
3235 n... = register number
3236 r... = register contents
3238 p
= &buf
[3]; /* after Txx */
3247 /* If the packet contains a register number, save it
3248 in pnum and set p1 to point to the character
3249 following it. Otherwise p1 points to p. */
3251 /* If this packet is an awatch packet, don't parse the 'a'
3252 as a register number. */
3254 if (!strncmp (p
, "awatch", strlen ("awatch")) != 0)
3256 /* Read the register number. */
3257 pnum
= strtol (p
, &p_temp
, 16);
3263 if (p1
== p
) /* No register number present here. */
3265 p1
= strchr (p
, ':');
3267 error (_("Malformed packet(a) (missing colon): %s\n\
3270 if (strncmp (p
, "thread", p1
- p
) == 0)
3272 p_temp
= unpack_varlen_hex (++p1
, &thread_num
);
3273 record_currthread (thread_num
);
3276 else if ((strncmp (p
, "watch", p1
- p
) == 0)
3277 || (strncmp (p
, "rwatch", p1
- p
) == 0)
3278 || (strncmp (p
, "awatch", p1
- p
) == 0))
3280 remote_stopped_by_watchpoint_p
= 1;
3281 p
= unpack_varlen_hex (++p1
, &addr
);
3282 remote_watch_data_address
= (CORE_ADDR
)addr
;
3286 /* Silently skip unknown optional info. */
3287 p_temp
= strchr (p1
+ 1, ';');
3295 struct packet_reg
*reg
= packet_reg_from_pnum (rsa
, pnum
);
3298 error (_("Malformed packet(b) (missing colon): %s\n\
3303 error (_("Remote sent bad register number %ld: %s\n\
3307 fieldsize
= hex2bin (p
, regs
,
3308 register_size (current_gdbarch
,
3311 if (fieldsize
< register_size (current_gdbarch
,
3313 warning (_("Remote reply is too short: %s"), buf
);
3314 regcache_raw_supply (current_regcache
, reg
->regnum
, regs
);
3318 error (_("Remote register badly formatted: %s\nhere: %s"),
3323 case 'S': /* Old style status, just signal only. */
3324 status
->kind
= TARGET_WAITKIND_STOPPED
;
3325 status
->value
.sig
= (enum target_signal
)
3326 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
3330 thread_num
= strtol ((const char *) &buf
[4], NULL
, 16);
3331 record_currthread (thread_num
);
3334 case 'W': /* Target exited. */
3336 /* The remote process exited. */
3337 status
->kind
= TARGET_WAITKIND_EXITED
;
3338 status
->value
.integer
= (fromhex (buf
[1]) << 4) + fromhex (buf
[2]);
3342 status
->kind
= TARGET_WAITKIND_SIGNALLED
;
3343 status
->value
.sig
= (enum target_signal
)
3344 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
3348 case 'O': /* Console output. */
3349 remote_console_output (buf
+ 1);
3350 /* Return immediately to the event loop. The event loop will
3351 still be waiting on the inferior afterwards. */
3352 status
->kind
= TARGET_WAITKIND_IGNORE
;
3355 if (last_sent_signal
!= TARGET_SIGNAL_0
)
3357 /* Zero length reply means that we tried 'S' or 'C' and
3358 the remote system doesn't support it. */
3359 target_terminal_ours_for_output ();
3361 ("Can't send signals to this remote system. %s not sent.\n",
3362 target_signal_to_name (last_sent_signal
));
3363 last_sent_signal
= TARGET_SIGNAL_0
;
3364 target_terminal_inferior ();
3366 strcpy ((char *) buf
, last_sent_step
? "s" : "c");
3367 putpkt ((char *) buf
);
3370 /* else fallthrough */
3372 warning (_("Invalid remote reply: %s"), buf
);
3377 if (thread_num
!= -1)
3379 return pid_to_ptid (thread_num
);
3381 return inferior_ptid
;
3384 /* Number of bytes of registers this stub implements. */
3386 static int register_bytes_found
;
3388 /* Read the remote registers into the block REGS. */
3389 /* Currently we just read all the registers, so we don't use regnum. */
3392 fetch_register_using_p (int regnum
)
3394 struct remote_state
*rs
= get_remote_state ();
3396 char regp
[MAX_REGISTER_SIZE
];
3401 p
+= hexnumstr (p
, regnum
);
3403 remote_send (&rs
->buf
, &rs
->buf_size
);
3407 /* If the stub didn't recognize the packet, or if we got an error,
3409 if (buf
[0] == '\0' || buf
[0] == 'E')
3412 /* If this register is unfetchable, tell the regcache. */
3415 regcache_raw_supply (current_regcache
, regnum
, NULL
);
3416 set_register_cached (regnum
, -1);
3420 /* Otherwise, parse and supply the value. */
3427 error (_("fetch_register_using_p: early buf termination"));
3431 regp
[i
++] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
3434 regcache_raw_supply (current_regcache
, regnum
, regp
);
3439 remote_fetch_registers (int regnum
)
3441 struct remote_state
*rs
= get_remote_state ();
3442 struct remote_arch_state
*rsa
= get_remote_arch_state ();
3446 char *regs
= alloca (rsa
->sizeof_g_packet
);
3448 set_thread (PIDGET (inferior_ptid
), 1);
3452 struct packet_reg
*reg
= packet_reg_from_regnum (rsa
, regnum
);
3453 gdb_assert (reg
!= NULL
);
3454 if (!reg
->in_g_packet
)
3455 internal_error (__FILE__
, __LINE__
,
3456 _("Attempt to fetch a non G-packet register when this "
3457 "remote.c does not support the p-packet."));
3459 switch (remote_protocol_packets
[PACKET_p
].support
)
3461 case PACKET_DISABLE
:
3464 if (fetch_register_using_p (regnum
))
3467 error (_("Protocol error: p packet not recognized by stub"));
3468 case PACKET_SUPPORT_UNKNOWN
:
3469 if (fetch_register_using_p (regnum
))
3471 /* The stub recognized the 'p' packet. Remember this. */
3472 remote_protocol_packets
[PACKET_p
].support
= PACKET_ENABLE
;
3477 /* The stub does not support the 'P' packet. Use 'G'
3478 instead, and don't try using 'P' in the future (it
3479 will just waste our time). */
3480 remote_protocol_packets
[PACKET_p
].support
= PACKET_DISABLE
;
3485 sprintf (rs
->buf
, "g");
3486 remote_send (&rs
->buf
, &rs
->buf_size
);
3489 /* Save the size of the packet sent to us by the target. Its used
3490 as a heuristic when determining the max size of packets that the
3491 target can safely receive. */
3492 if ((rsa
->actual_register_packet_size
) == 0)
3493 (rsa
->actual_register_packet_size
) = strlen (buf
);
3495 /* Unimplemented registers read as all bits zero. */
3496 memset (regs
, 0, rsa
->sizeof_g_packet
);
3498 /* We can get out of synch in various cases. If the first character
3499 in the buffer is not a hex character, assume that has happened
3500 and try to fetch another packet to read. */
3501 while ((buf
[0] < '0' || buf
[0] > '9')
3502 && (buf
[0] < 'A' || buf
[0] > 'F')
3503 && (buf
[0] < 'a' || buf
[0] > 'f')
3504 && buf
[0] != 'x') /* New: unavailable register value. */
3507 fprintf_unfiltered (gdb_stdlog
,
3508 "Bad register packet; fetching a new packet\n");
3509 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3513 /* Reply describes registers byte by byte, each byte encoded as two
3514 hex characters. Suck them all up, then supply them to the
3515 register cacheing/storage mechanism. */
3518 for (i
= 0; i
< rsa
->sizeof_g_packet
; i
++)
3524 warning (_("Remote reply is of odd length: %s"), buf
);
3525 /* Don't change register_bytes_found in this case, and don't
3526 print a second warning. */
3529 if (p
[0] == 'x' && p
[1] == 'x')
3530 regs
[i
] = 0; /* 'x' */
3532 regs
[i
] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
3536 if (i
!= register_bytes_found
)
3538 register_bytes_found
= i
;
3539 if (REGISTER_BYTES_OK_P ()
3540 && !REGISTER_BYTES_OK (i
))
3541 warning (_("Remote reply is too short: %s"), buf
);
3547 for (i
= 0; i
< NUM_REGS
+ NUM_PSEUDO_REGS
; i
++)
3549 struct packet_reg
*r
= &rsa
->regs
[i
];
3552 if (r
->offset
* 2 >= strlen (buf
))
3553 /* A short packet that didn't include the register's
3554 value, this implies that the register is zero (and
3555 not that the register is unavailable). Supply that
3557 regcache_raw_supply (current_regcache
, r
->regnum
, NULL
);
3558 else if (buf
[r
->offset
* 2] == 'x')
3560 gdb_assert (r
->offset
* 2 < strlen (buf
));
3561 /* The register isn't available, mark it as such (at
3562 the same time setting the value to zero). */
3563 regcache_raw_supply (current_regcache
, r
->regnum
, NULL
);
3564 set_register_cached (i
, -1);
3567 regcache_raw_supply (current_regcache
, r
->regnum
,
3574 /* Prepare to store registers. Since we may send them all (using a
3575 'G' request), we have to read out the ones we don't want to change
3579 remote_prepare_to_store (void)
3581 struct remote_arch_state
*rsa
= get_remote_arch_state ();
3583 gdb_byte buf
[MAX_REGISTER_SIZE
];
3585 /* Make sure the entire registers array is valid. */
3586 switch (remote_protocol_packets
[PACKET_P
].support
)
3588 case PACKET_DISABLE
:
3589 case PACKET_SUPPORT_UNKNOWN
:
3590 /* Make sure all the necessary registers are cached. */
3591 for (i
= 0; i
< NUM_REGS
; i
++)
3592 if (rsa
->regs
[i
].in_g_packet
)
3593 regcache_raw_read (current_regcache
, rsa
->regs
[i
].regnum
, buf
);
3600 /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF
3601 packet was not recognized. */
3604 store_register_using_P (int regnum
)
3606 struct remote_state
*rs
= get_remote_state ();
3607 struct remote_arch_state
*rsa
= get_remote_arch_state ();
3608 struct packet_reg
*reg
= packet_reg_from_regnum (rsa
, regnum
);
3609 /* Try storing a single register. */
3610 char *buf
= rs
->buf
;
3611 gdb_byte regp
[MAX_REGISTER_SIZE
];
3614 xsnprintf (buf
, get_remote_packet_size (), "P%s=", phex_nz (reg
->pnum
, 0));
3615 p
= buf
+ strlen (buf
);
3616 regcache_raw_collect (current_regcache
, reg
->regnum
, regp
);
3617 bin2hex (regp
, p
, register_size (current_gdbarch
, reg
->regnum
));
3618 remote_send (&rs
->buf
, &rs
->buf_size
);
3620 return rs
->buf
[0] != '\0';
3624 /* Store register REGNUM, or all registers if REGNUM == -1, from the
3625 contents of the register cache buffer. FIXME: ignores errors. */
3628 remote_store_registers (int regnum
)
3630 struct remote_state
*rs
= get_remote_state ();
3631 struct remote_arch_state
*rsa
= get_remote_arch_state ();
3635 set_thread (PIDGET (inferior_ptid
), 1);
3639 switch (remote_protocol_packets
[PACKET_P
].support
)
3641 case PACKET_DISABLE
:
3644 if (store_register_using_P (regnum
))
3647 error (_("Protocol error: P packet not recognized by stub"));
3648 case PACKET_SUPPORT_UNKNOWN
:
3649 if (store_register_using_P (regnum
))
3651 /* The stub recognized the 'P' packet. Remember this. */
3652 remote_protocol_packets
[PACKET_P
].support
= PACKET_ENABLE
;
3657 /* The stub does not support the 'P' packet. Use 'G'
3658 instead, and don't try using 'P' in the future (it
3659 will just waste our time). */
3660 remote_protocol_packets
[PACKET_P
].support
= PACKET_DISABLE
;
3666 /* Extract all the registers in the regcache copying them into a
3670 regs
= alloca (rsa
->sizeof_g_packet
);
3671 memset (regs
, 0, rsa
->sizeof_g_packet
);
3672 for (i
= 0; i
< NUM_REGS
+ NUM_PSEUDO_REGS
; i
++)
3674 struct packet_reg
*r
= &rsa
->regs
[i
];
3676 regcache_raw_collect (current_regcache
, r
->regnum
, regs
+ r
->offset
);
3680 /* Command describes registers byte by byte,
3681 each byte encoded as two hex characters. */
3684 /* remote_prepare_to_store insures that register_bytes_found gets set. */
3685 bin2hex (regs
, p
, register_bytes_found
);
3686 remote_send (&rs
->buf
, &rs
->buf_size
);
3690 /* Return the number of hex digits in num. */
3693 hexnumlen (ULONGEST num
)
3697 for (i
= 0; num
!= 0; i
++)
3703 /* Set BUF to the minimum number of hex digits representing NUM. */
3706 hexnumstr (char *buf
, ULONGEST num
)
3708 int len
= hexnumlen (num
);
3709 return hexnumnstr (buf
, num
, len
);
3713 /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */
3716 hexnumnstr (char *buf
, ULONGEST num
, int width
)
3722 for (i
= width
- 1; i
>= 0; i
--)
3724 buf
[i
] = "0123456789abcdef"[(num
& 0xf)];
3731 /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */
3734 remote_address_masked (CORE_ADDR addr
)
3736 if (remote_address_size
> 0
3737 && remote_address_size
< (sizeof (ULONGEST
) * 8))
3739 /* Only create a mask when that mask can safely be constructed
3740 in a ULONGEST variable. */
3742 mask
= (mask
<< remote_address_size
) - 1;
3748 /* Convert BUFFER, binary data at least LEN bytes long, into escaped
3749 binary data in OUT_BUF. Set *OUT_LEN to the length of the data
3750 encoded in OUT_BUF, and return the number of bytes in OUT_BUF
3751 (which may be more than *OUT_LEN due to escape characters). The
3752 total number of bytes in the output buffer will be at most
3756 remote_escape_output (const gdb_byte
*buffer
, int len
,
3757 gdb_byte
*out_buf
, int *out_len
,
3760 int input_index
, output_index
;
3763 for (input_index
= 0; input_index
< len
; input_index
++)
3765 gdb_byte b
= buffer
[input_index
];
3767 if (b
== '$' || b
== '#' || b
== '}')
3769 /* These must be escaped. */
3770 if (output_index
+ 2 > out_maxlen
)
3772 out_buf
[output_index
++] = '}';
3773 out_buf
[output_index
++] = b
^ 0x20;
3777 if (output_index
+ 1 > out_maxlen
)
3779 out_buf
[output_index
++] = b
;
3783 *out_len
= input_index
;
3784 return output_index
;
3787 /* Convert BUFFER, escaped data LEN bytes long, into binary data
3788 in OUT_BUF. Return the number of bytes written to OUT_BUF.
3789 Raise an error if the total number of bytes exceeds OUT_MAXLEN.
3791 This function reverses remote_escape_output. It allows more
3792 escaped characters than that function does, in particular because
3793 '*' must be escaped to avoid the run-length encoding processing
3794 in reading packets. */
3797 remote_unescape_input (const gdb_byte
*buffer
, int len
,
3798 gdb_byte
*out_buf
, int out_maxlen
)
3800 int input_index
, output_index
;
3805 for (input_index
= 0; input_index
< len
; input_index
++)
3807 gdb_byte b
= buffer
[input_index
];
3809 if (output_index
+ 1 > out_maxlen
)
3811 warning (_("Received too much data from remote target;"
3812 " ignoring overflow."));
3813 return output_index
;
3818 out_buf
[output_index
++] = b
^ 0x20;
3824 out_buf
[output_index
++] = b
;
3828 error (_("Unmatched escape character in target response."));
3830 return output_index
;
3833 /* Determine whether the remote target supports binary downloading.
3834 This is accomplished by sending a no-op memory write of zero length
3835 to the target at the specified address. It does not suffice to send
3836 the whole packet, since many stubs strip the eighth bit and
3837 subsequently compute a wrong checksum, which causes real havoc with
3840 NOTE: This can still lose if the serial line is not eight-bit
3841 clean. In cases like this, the user should clear "remote
3845 check_binary_download (CORE_ADDR addr
)
3847 struct remote_state
*rs
= get_remote_state ();
3849 switch (remote_protocol_packets
[PACKET_X
].support
)
3851 case PACKET_DISABLE
:
3855 case PACKET_SUPPORT_UNKNOWN
:
3861 p
+= hexnumstr (p
, (ULONGEST
) addr
);
3863 p
+= hexnumstr (p
, (ULONGEST
) 0);
3867 putpkt_binary (rs
->buf
, (int) (p
- rs
->buf
));
3868 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3870 if (rs
->buf
[0] == '\0')
3873 fprintf_unfiltered (gdb_stdlog
,
3874 "binary downloading NOT suppported by target\n");
3875 remote_protocol_packets
[PACKET_X
].support
= PACKET_DISABLE
;
3880 fprintf_unfiltered (gdb_stdlog
,
3881 "binary downloading suppported by target\n");
3882 remote_protocol_packets
[PACKET_X
].support
= PACKET_ENABLE
;
3889 /* Write memory data directly to the remote machine.
3890 This does not inform the data cache; the data cache uses this.
3891 HEADER is the starting part of the packet.
3892 MEMADDR is the address in the remote memory space.
3893 MYADDR is the address of the buffer in our space.
3894 LEN is the number of bytes.
3895 PACKET_FORMAT should be either 'X' or 'M', and indicates if we
3896 should send data as binary ('X'), or hex-encoded ('M').
3898 The function creates packet of the form
3899 <HEADER><ADDRESS>,<LENGTH>:<DATA>
3901 where encoding of <DATA> is termined by PACKET_FORMAT.
3903 If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma
3906 Returns the number of bytes transferred, or 0 (setting errno) for
3907 error. Only transfer a single packet. */
3910 remote_write_bytes_aux (const char *header
, CORE_ADDR memaddr
,
3911 const gdb_byte
*myaddr
, int len
,
3912 char packet_format
, int use_length
)
3914 struct remote_state
*rs
= get_remote_state ();
3924 if (packet_format
!= 'X' && packet_format
!= 'M')
3925 internal_error (__FILE__
, __LINE__
,
3926 "remote_write_bytes_aux: bad packet format");
3928 /* Should this be the selected frame? */
3929 gdbarch_remote_translate_xfer_address (current_gdbarch
,
3937 payload_size
= get_memory_write_packet_size ();
3939 /* The packet buffer will be large enough for the payload;
3940 get_memory_packet_size ensures this. */
3943 /* Compute the size of the actual payload by subtracting out the
3944 packet header and footer overhead: "$M<memaddr>,<len>:...#nn".
3946 payload_size
-= strlen ("$,:#NN");
3948 /* The comma won't be used. */
3950 header_length
= strlen (header
);
3951 payload_size
-= header_length
;
3952 payload_size
-= hexnumlen (memaddr
);
3954 /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */
3956 strcat (rs
->buf
, header
);
3957 p
= rs
->buf
+ strlen (header
);
3959 /* Compute a best guess of the number of bytes actually transfered. */
3960 if (packet_format
== 'X')
3962 /* Best guess at number of bytes that will fit. */
3963 todo
= min (len
, payload_size
);
3965 payload_size
-= hexnumlen (todo
);
3966 todo
= min (todo
, payload_size
);
3970 /* Num bytes that will fit. */
3971 todo
= min (len
, payload_size
/ 2);
3973 payload_size
-= hexnumlen (todo
);
3974 todo
= min (todo
, payload_size
/ 2);
3978 internal_error (__FILE__
, __LINE__
,
3979 _("minumum packet size too small to write data"));
3981 /* If we already need another packet, then try to align the end
3982 of this packet to a useful boundary. */
3983 if (todo
> 2 * REMOTE_ALIGN_WRITES
&& todo
< len
)
3984 todo
= ((memaddr
+ todo
) & ~(REMOTE_ALIGN_WRITES
- 1)) - memaddr
;
3986 /* Append "<memaddr>". */
3987 memaddr
= remote_address_masked (memaddr
);
3988 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
3995 /* Append <len>. Retain the location/size of <len>. It may need to
3996 be adjusted once the packet body has been created. */
3998 plenlen
= hexnumstr (p
, (ULONGEST
) todo
);
4006 /* Append the packet body. */
4007 if (packet_format
== 'X')
4009 /* Binary mode. Send target system values byte by byte, in
4010 increasing byte addresses. Only escape certain critical
4012 payload_length
= remote_escape_output (myaddr
, todo
, p
, &nr_bytes
,
4015 /* If not all TODO bytes fit, then we'll need another packet. Make
4016 a second try to keep the end of the packet aligned. */
4017 if (nr_bytes
< todo
)
4021 new_nr_bytes
= (((memaddr
+ nr_bytes
) & ~(REMOTE_ALIGN_WRITES
- 1))
4023 if (new_nr_bytes
!= nr_bytes
)
4024 payload_length
= remote_escape_output (myaddr
, new_nr_bytes
,
4029 p
+= payload_length
;
4030 if (use_length
&& nr_bytes
< todo
)
4032 /* Escape chars have filled up the buffer prematurely,
4033 and we have actually sent fewer bytes than planned.
4034 Fix-up the length field of the packet. Use the same
4035 number of characters as before. */
4036 plen
+= hexnumnstr (plen
, (ULONGEST
) nr_bytes
, plenlen
);
4037 *plen
= ':'; /* overwrite \0 from hexnumnstr() */
4042 /* Normal mode: Send target system values byte by byte, in
4043 increasing byte addresses. Each byte is encoded as a two hex
4045 nr_bytes
= bin2hex (myaddr
, p
, todo
);
4049 putpkt_binary (rs
->buf
, (int) (p
- rs
->buf
));
4050 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4052 if (rs
->buf
[0] == 'E')
4054 /* There is no correspondance between what the remote protocol
4055 uses for errors and errno codes. We would like a cleaner way
4056 of representing errors (big enough to include errno codes,
4057 bfd_error codes, and others). But for now just return EIO. */
4062 /* Return NR_BYTES, not TODO, in case escape chars caused us to send
4063 fewer bytes than we'd planned. */
4067 /* Write memory data directly to the remote machine.
4068 This does not inform the data cache; the data cache uses this.
4069 MEMADDR is the address in the remote memory space.
4070 MYADDR is the address of the buffer in our space.
4071 LEN is the number of bytes.
4073 Returns number of bytes transferred, or 0 (setting errno) for
4074 error. Only transfer a single packet. */
4077 remote_write_bytes (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, int len
)
4079 char *packet_format
= 0;
4081 /* Check whether the target supports binary download. */
4082 check_binary_download (memaddr
);
4084 switch (remote_protocol_packets
[PACKET_X
].support
)
4087 packet_format
= "X";
4089 case PACKET_DISABLE
:
4090 packet_format
= "M";
4092 case PACKET_SUPPORT_UNKNOWN
:
4093 internal_error (__FILE__
, __LINE__
,
4094 _("remote_write_bytes: bad internal state"));
4096 internal_error (__FILE__
, __LINE__
, _("bad switch"));
4099 return remote_write_bytes_aux (packet_format
,
4100 memaddr
, myaddr
, len
, packet_format
[0], 1);
4103 /* Read memory data directly from the remote machine.
4104 This does not use the data cache; the data cache uses this.
4105 MEMADDR is the address in the remote memory space.
4106 MYADDR is the address of the buffer in our space.
4107 LEN is the number of bytes.
4109 Returns number of bytes transferred, or 0 for error. */
4111 /* NOTE: cagney/1999-10-18: This function (and its siblings in other
4112 remote targets) shouldn't attempt to read the entire buffer.
4113 Instead it should read a single packet worth of data and then
4114 return the byte size of that packet to the caller. The caller (its
4115 caller and its callers caller ;-) already contains code for
4116 handling partial reads. */
4119 remote_read_bytes (CORE_ADDR memaddr
, gdb_byte
*myaddr
, int len
)
4121 struct remote_state
*rs
= get_remote_state ();
4122 int max_buf_size
; /* Max size of packet output buffer. */
4125 /* Should this be the selected frame? */
4126 gdbarch_remote_translate_xfer_address (current_gdbarch
,
4134 max_buf_size
= get_memory_read_packet_size ();
4135 /* The packet buffer will be large enough for the payload;
4136 get_memory_packet_size ensures this. */
4145 todo
= min (len
, max_buf_size
/ 2); /* num bytes that will fit */
4147 /* construct "m"<memaddr>","<len>" */
4148 /* sprintf (rs->buf, "m%lx,%x", (unsigned long) memaddr, todo); */
4149 memaddr
= remote_address_masked (memaddr
);
4152 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
4154 p
+= hexnumstr (p
, (ULONGEST
) todo
);
4158 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4160 if (rs
->buf
[0] == 'E'
4161 && isxdigit (rs
->buf
[1]) && isxdigit (rs
->buf
[2])
4162 && rs
->buf
[3] == '\0')
4164 /* There is no correspondance between what the remote
4165 protocol uses for errors and errno codes. We would like
4166 a cleaner way of representing errors (big enough to
4167 include errno codes, bfd_error codes, and others). But
4168 for now just return EIO. */
4173 /* Reply describes memory byte by byte,
4174 each byte encoded as two hex characters. */
4177 if ((i
= hex2bin (p
, myaddr
, todo
)) < todo
)
4179 /* Reply is short. This means that we were able to read
4180 only part of what we wanted to. */
4181 return i
+ (origlen
- len
);
4190 /* Read or write LEN bytes from inferior memory at MEMADDR,
4191 transferring to or from debugger address BUFFER. Write to inferior
4192 if SHOULD_WRITE is nonzero. Returns length of data written or
4193 read; 0 for error. TARGET is unused. */
4196 remote_xfer_memory (CORE_ADDR mem_addr
, gdb_byte
*buffer
, int mem_len
,
4197 int should_write
, struct mem_attrib
*attrib
,
4198 struct target_ops
*target
)
4203 res
= remote_write_bytes (mem_addr
, buffer
, mem_len
);
4205 res
= remote_read_bytes (mem_addr
, buffer
, mem_len
);
4210 /* Sends a packet with content determined by the printf format string
4211 FORMAT and the remaining arguments, then gets the reply. Returns
4212 whether the packet was a success, a failure, or unknown. */
4215 remote_send_printf (const char *format
, ...)
4217 struct remote_state
*rs
= get_remote_state ();
4218 int max_size
= get_remote_packet_size ();
4221 va_start (ap
, format
);
4224 if (vsnprintf (rs
->buf
, max_size
, format
, ap
) >= max_size
)
4225 internal_error (__FILE__
, __LINE__
, "Too long remote packet.");
4227 if (putpkt (rs
->buf
) < 0)
4228 error (_("Communication problem with target."));
4231 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4233 return packet_check_result (rs
->buf
);
4237 restore_remote_timeout (void *p
)
4239 int value
= *(int *)p
;
4240 remote_timeout
= value
;
4243 /* Flash writing can take quite some time. We'll set
4244 effectively infinite timeout for flash operations.
4245 In future, we'll need to decide on a better approach. */
4246 static const int remote_flash_timeout
= 1000;
4249 remote_flash_erase (struct target_ops
*ops
,
4250 ULONGEST address
, LONGEST length
)
4252 int saved_remote_timeout
= remote_timeout
;
4253 enum packet_result ret
;
4255 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
4256 &saved_remote_timeout
);
4257 remote_timeout
= remote_flash_timeout
;
4259 ret
= remote_send_printf ("vFlashErase:%s,%s",
4264 case PACKET_UNKNOWN
:
4265 error (_("Remote target does not support flash erase"));
4267 error (_("Error erasing flash with vFlashErase packet"));
4272 do_cleanups (back_to
);
4276 remote_flash_write (struct target_ops
*ops
,
4277 ULONGEST address
, LONGEST length
,
4278 const gdb_byte
*data
)
4280 int saved_remote_timeout
= remote_timeout
;
4282 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
4283 &saved_remote_timeout
);
4285 remote_timeout
= remote_flash_timeout
;
4286 ret
= remote_write_bytes_aux ("vFlashWrite:", address
, data
, length
, 'X', 0);
4287 do_cleanups (back_to
);
4293 remote_flash_done (struct target_ops
*ops
)
4295 int saved_remote_timeout
= remote_timeout
;
4297 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
4298 &saved_remote_timeout
);
4300 remote_timeout
= remote_flash_timeout
;
4301 ret
= remote_send_printf ("vFlashDone");
4302 do_cleanups (back_to
);
4306 case PACKET_UNKNOWN
:
4307 error (_("Remote target does not support vFlashDone"));
4309 error (_("Error finishing flash operation"));
4316 remote_files_info (struct target_ops
*ignore
)
4318 puts_filtered ("Debugging a target over a serial line.\n");
4321 /* Stuff for dealing with the packets which are part of this protocol.
4322 See comment at top of file for details. */
4324 /* Read a single character from the remote end. */
4327 readchar (int timeout
)
4331 ch
= serial_readchar (remote_desc
, timeout
);
4336 switch ((enum serial_rc
) ch
)
4339 target_mourn_inferior ();
4340 error (_("Remote connection closed"));
4343 perror_with_name (_("Remote communication error"));
4345 case SERIAL_TIMEOUT
:
4351 /* Send the command in *BUF to the remote machine, and read the reply
4352 into *BUF. Report an error if we get an error reply. Resize
4353 *BUF using xrealloc if necessary to hold the result, and update
4357 remote_send (char **buf
,
4361 getpkt (buf
, sizeof_buf
, 0);
4363 if ((*buf
)[0] == 'E')
4364 error (_("Remote failure reply: %s"), *buf
);
4367 /* Display a null-terminated packet on stdout, for debugging, using C
4371 print_packet (char *buf
)
4373 puts_filtered ("\"");
4374 fputstr_filtered (buf
, '"', gdb_stdout
);
4375 puts_filtered ("\"");
4381 return putpkt_binary (buf
, strlen (buf
));
4384 /* Send a packet to the remote machine, with error checking. The data
4385 of the packet is in BUF. The string in BUF can be at most
4386 get_remote_packet_size () - 5 to account for the $, # and checksum,
4387 and for a possible /0 if we are debugging (remote_debug) and want
4388 to print the sent packet as a string. */
4391 putpkt_binary (char *buf
, int cnt
)
4394 unsigned char csum
= 0;
4395 char *buf2
= alloca (cnt
+ 6);
4401 /* Copy the packet into buffer BUF2, encapsulating it
4402 and giving it a checksum. */
4407 for (i
= 0; i
< cnt
; i
++)
4413 *p
++ = tohex ((csum
>> 4) & 0xf);
4414 *p
++ = tohex (csum
& 0xf);
4416 /* Send it over and over until we get a positive ack. */
4420 int started_error_output
= 0;
4425 fprintf_unfiltered (gdb_stdlog
, "Sending packet: ");
4426 fputstrn_unfiltered (buf2
, p
- buf2
, 0, gdb_stdlog
);
4427 fprintf_unfiltered (gdb_stdlog
, "...");
4428 gdb_flush (gdb_stdlog
);
4430 if (serial_write (remote_desc
, buf2
, p
- buf2
))
4431 perror_with_name (_("putpkt: write failed"));
4433 /* Read until either a timeout occurs (-2) or '+' is read. */
4436 ch
= readchar (remote_timeout
);
4444 case SERIAL_TIMEOUT
:
4446 if (started_error_output
)
4448 putchar_unfiltered ('\n');
4449 started_error_output
= 0;
4458 fprintf_unfiltered (gdb_stdlog
, "Ack\n");
4462 fprintf_unfiltered (gdb_stdlog
, "Nak\n");
4463 case SERIAL_TIMEOUT
:
4467 break; /* Retransmit buffer. */
4471 fprintf_unfiltered (gdb_stdlog
,
4472 "Packet instead of Ack, ignoring it\n");
4473 /* It's probably an old response sent because an ACK
4474 was lost. Gobble up the packet and ack it so it
4475 doesn't get retransmitted when we resend this
4478 serial_write (remote_desc
, "+", 1);
4479 continue; /* Now, go look for +. */
4484 if (!started_error_output
)
4486 started_error_output
= 1;
4487 fprintf_unfiltered (gdb_stdlog
, "putpkt: Junk: ");
4489 fputc_unfiltered (ch
& 0177, gdb_stdlog
);
4493 break; /* Here to retransmit. */
4497 /* This is wrong. If doing a long backtrace, the user should be
4498 able to get out next time we call QUIT, without anything as
4499 violent as interrupt_query. If we want to provide a way out of
4500 here without getting to the next QUIT, it should be based on
4501 hitting ^C twice as in remote_wait. */
4511 /* Come here after finding the start of a frame when we expected an
4512 ack. Do our best to discard the rest of this packet. */
4521 c
= readchar (remote_timeout
);
4524 case SERIAL_TIMEOUT
:
4525 /* Nothing we can do. */
4528 /* Discard the two bytes of checksum and stop. */
4529 c
= readchar (remote_timeout
);
4531 c
= readchar (remote_timeout
);
4534 case '*': /* Run length encoding. */
4535 /* Discard the repeat count. */
4536 c
= readchar (remote_timeout
);
4541 /* A regular character. */
4547 /* Come here after finding the start of the frame. Collect the rest
4548 into *BUF, verifying the checksum, length, and handling run-length
4549 compression. NUL terminate the buffer. If there is not enough room,
4550 expand *BUF using xrealloc.
4552 Returns -1 on error, number of characters in buffer (ignoring the
4553 trailing NULL) on success. (could be extended to return one of the
4554 SERIAL status indications). */
4557 read_frame (char **buf_p
,
4570 c
= readchar (remote_timeout
);
4573 case SERIAL_TIMEOUT
:
4575 fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog
);
4579 fputs_filtered ("Saw new packet start in middle of old one\n",
4581 return -1; /* Start a new packet, count retries. */
4584 unsigned char pktcsum
;
4590 check_0
= readchar (remote_timeout
);
4592 check_1
= readchar (remote_timeout
);
4594 if (check_0
== SERIAL_TIMEOUT
|| check_1
== SERIAL_TIMEOUT
)
4597 fputs_filtered ("Timeout in checksum, retrying\n",
4601 else if (check_0
< 0 || check_1
< 0)
4604 fputs_filtered ("Communication error in checksum\n",
4609 pktcsum
= (fromhex (check_0
) << 4) | fromhex (check_1
);
4610 if (csum
== pktcsum
)
4615 fprintf_filtered (gdb_stdlog
,
4616 "Bad checksum, sentsum=0x%x, csum=0x%x, buf=",
4618 fputstrn_filtered (buf
, bc
, 0, gdb_stdlog
);
4619 fputs_filtered ("\n", gdb_stdlog
);
4621 /* Number of characters in buffer ignoring trailing
4625 case '*': /* Run length encoding. */
4630 c
= readchar (remote_timeout
);
4632 repeat
= c
- ' ' + 3; /* Compute repeat count. */
4634 /* The character before ``*'' is repeated. */
4636 if (repeat
> 0 && repeat
<= 255 && bc
> 0)
4638 if (bc
+ repeat
- 1 >= *sizeof_buf
- 1)
4640 /* Make some more room in the buffer. */
4641 *sizeof_buf
+= repeat
;
4642 *buf_p
= xrealloc (*buf_p
, *sizeof_buf
);
4646 memset (&buf
[bc
], buf
[bc
- 1], repeat
);
4652 printf_filtered (_("Invalid run length encoding: %s\n"), buf
);
4656 if (bc
>= *sizeof_buf
- 1)
4658 /* Make some more room in the buffer. */
4660 *buf_p
= xrealloc (*buf_p
, *sizeof_buf
);
4671 /* Read a packet from the remote machine, with error checking, and
4672 store it in *BUF. Resize *BUF using xrealloc if necessary to hold
4673 the result, and update *SIZEOF_BUF. If FOREVER, wait forever
4674 rather than timing out; this is used (in synchronous mode) to wait
4675 for a target that is is executing user code to stop. */
4676 /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we
4677 don't have to change all the calls to getpkt to deal with the
4678 return value, because at the moment I don't know what the right
4679 thing to do it for those. */
4687 timed_out
= getpkt_sane (buf
, sizeof_buf
, forever
);
4691 /* Read a packet from the remote machine, with error checking, and
4692 store it in *BUF. Resize *BUF using xrealloc if necessary to hold
4693 the result, and update *SIZEOF_BUF. If FOREVER, wait forever
4694 rather than timing out; this is used (in synchronous mode) to wait
4695 for a target that is is executing user code to stop. If FOREVER ==
4696 0, this function is allowed to time out gracefully and return an
4697 indication of this to the caller. Otherwise return the number
4700 getpkt_sane (char **buf
, long *sizeof_buf
, int forever
)
4707 strcpy (*buf
, "timeout");
4711 timeout
= watchdog
> 0 ? watchdog
: -1;
4715 timeout
= remote_timeout
;
4719 for (tries
= 1; tries
<= MAX_TRIES
; tries
++)
4721 /* This can loop forever if the remote side sends us characters
4722 continuously, but if it pauses, we'll get a zero from
4723 readchar because of timeout. Then we'll count that as a
4726 /* Note that we will only wait forever prior to the start of a
4727 packet. After that, we expect characters to arrive at a
4728 brisk pace. They should show up within remote_timeout
4733 c
= readchar (timeout
);
4735 if (c
== SERIAL_TIMEOUT
)
4737 if (forever
) /* Watchdog went off? Kill the target. */
4740 target_mourn_inferior ();
4741 error (_("Watchdog has expired. Target detached."));
4744 fputs_filtered ("Timed out.\n", gdb_stdlog
);
4750 /* We've found the start of a packet, now collect the data. */
4752 val
= read_frame (buf
, sizeof_buf
);
4758 fprintf_unfiltered (gdb_stdlog
, "Packet received: ");
4759 fputstrn_unfiltered (*buf
, val
, 0, gdb_stdlog
);
4760 fprintf_unfiltered (gdb_stdlog
, "\n");
4762 serial_write (remote_desc
, "+", 1);
4766 /* Try the whole thing again. */
4768 serial_write (remote_desc
, "-", 1);
4771 /* We have tried hard enough, and just can't receive the packet.
4774 printf_unfiltered (_("Ignoring packet error, continuing...\n"));
4775 serial_write (remote_desc
, "+", 1);
4782 /* For some mysterious reason, wait_for_inferior calls kill instead of
4783 mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */
4787 target_mourn_inferior ();
4791 /* Use catch_errors so the user can quit from gdb even when we aren't on
4792 speaking terms with the remote system. */
4793 catch_errors ((catch_errors_ftype
*) putpkt
, "k", "", RETURN_MASK_ERROR
);
4795 /* Don't wait for it to die. I'm not really sure it matters whether
4796 we do or not. For the existing stubs, kill is a noop. */
4797 target_mourn_inferior ();
4800 /* Async version of remote_kill. */
4802 remote_async_kill (void)
4804 /* Unregister the file descriptor from the event loop. */
4805 if (target_is_async_p ())
4806 serial_async (remote_desc
, NULL
, 0);
4808 /* For some mysterious reason, wait_for_inferior calls kill instead of
4809 mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */
4813 target_mourn_inferior ();
4817 /* Use catch_errors so the user can quit from gdb even when we
4818 aren't on speaking terms with the remote system. */
4819 catch_errors ((catch_errors_ftype
*) putpkt
, "k", "", RETURN_MASK_ERROR
);
4821 /* Don't wait for it to die. I'm not really sure it matters whether
4822 we do or not. For the existing stubs, kill is a noop. */
4823 target_mourn_inferior ();
4829 remote_mourn_1 (&remote_ops
);
4833 remote_async_mourn (void)
4835 remote_mourn_1 (&remote_async_ops
);
4839 extended_remote_mourn (void)
4841 /* We do _not_ want to mourn the target like this; this will
4842 remove the extended remote target from the target stack,
4843 and the next time the user says "run" it'll fail.
4845 FIXME: What is the right thing to do here? */
4847 remote_mourn_1 (&extended_remote_ops
);
4851 /* Worker function for remote_mourn. */
4853 remote_mourn_1 (struct target_ops
*target
)
4855 unpush_target (target
);
4856 generic_mourn_inferior ();
4859 /* In the extended protocol we want to be able to do things like
4860 "run" and have them basically work as expected. So we need
4861 a special create_inferior function.
4863 FIXME: One day add support for changing the exec file
4864 we're debugging, arguments and an environment. */
4867 extended_remote_create_inferior (char *exec_file
, char *args
,
4868 char **env
, int from_tty
)
4870 /* Rip out the breakpoints; we'll reinsert them after restarting
4871 the remote server. */
4872 remove_breakpoints ();
4874 /* Now restart the remote server. */
4875 extended_remote_restart ();
4877 /* Now put the breakpoints back in. This way we're safe if the
4878 restart function works via a unix fork on the remote side. */
4879 insert_breakpoints ();
4881 /* Clean up from the last time we were running. */
4882 clear_proceed_status ();
4885 /* Async version of extended_remote_create_inferior. */
4887 extended_remote_async_create_inferior (char *exec_file
, char *args
,
4888 char **env
, int from_tty
)
4890 /* Rip out the breakpoints; we'll reinsert them after restarting
4891 the remote server. */
4892 remove_breakpoints ();
4894 /* If running asynchronously, register the target file descriptor
4895 with the event loop. */
4896 if (target_can_async_p ())
4897 target_async (inferior_event_handler
, 0);
4899 /* Now restart the remote server. */
4900 extended_remote_restart ();
4902 /* Now put the breakpoints back in. This way we're safe if the
4903 restart function works via a unix fork on the remote side. */
4904 insert_breakpoints ();
4906 /* Clean up from the last time we were running. */
4907 clear_proceed_status ();
4911 /* On some machines, e.g. 68k, we may use a different breakpoint
4912 instruction than other targets; in those use
4913 DEPRECATED_REMOTE_BREAKPOINT instead of just BREAKPOINT_FROM_PC.
4914 Also, bi-endian targets may define
4915 DEPRECATED_LITTLE_REMOTE_BREAKPOINT and
4916 DEPRECATED_BIG_REMOTE_BREAKPOINT. If none of these are defined, we
4917 just call the standard routines that are in mem-break.c. */
4919 /* NOTE: cagney/2003-06-08: This is silly. A remote and simulator
4920 target should use an identical BREAKPOINT_FROM_PC. As for native,
4921 the ARCH-OS-tdep.c code can override the default. */
4923 #if defined (DEPRECATED_LITTLE_REMOTE_BREAKPOINT) && defined (DEPRECATED_BIG_REMOTE_BREAKPOINT) && !defined(DEPRECATED_REMOTE_BREAKPOINT)
4924 #define DEPRECATED_REMOTE_BREAKPOINT
4927 #ifdef DEPRECATED_REMOTE_BREAKPOINT
4929 /* If the target isn't bi-endian, just pretend it is. */
4930 #if !defined (DEPRECATED_LITTLE_REMOTE_BREAKPOINT) && !defined (DEPRECATED_BIG_REMOTE_BREAKPOINT)
4931 #define DEPRECATED_LITTLE_REMOTE_BREAKPOINT DEPRECATED_REMOTE_BREAKPOINT
4932 #define DEPRECATED_BIG_REMOTE_BREAKPOINT DEPRECATED_REMOTE_BREAKPOINT
4935 static unsigned char big_break_insn
[] = DEPRECATED_BIG_REMOTE_BREAKPOINT
;
4936 static unsigned char little_break_insn
[] = DEPRECATED_LITTLE_REMOTE_BREAKPOINT
;
4938 #endif /* DEPRECATED_REMOTE_BREAKPOINT */
4940 /* Insert a breakpoint. On targets that have software breakpoint
4941 support, we ask the remote target to do the work; on targets
4942 which don't, we insert a traditional memory breakpoint. */
4945 remote_insert_breakpoint (struct bp_target_info
*bp_tgt
)
4947 CORE_ADDR addr
= bp_tgt
->placed_address
;
4948 struct remote_state
*rs
= get_remote_state ();
4949 #ifdef DEPRECATED_REMOTE_BREAKPOINT
4953 /* Try the "Z" s/w breakpoint packet if it is not already disabled.
4954 If it succeeds, then set the support to PACKET_ENABLE. If it
4955 fails, and the user has explicitly requested the Z support then
4956 report an error, otherwise, mark it disabled and go on. */
4958 if (remote_protocol_packets
[PACKET_Z0
].support
!= PACKET_DISABLE
)
4965 BREAKPOINT_FROM_PC (&bp_tgt
->placed_address
, &bp_tgt
->placed_size
);
4966 addr
= (ULONGEST
) remote_address_masked (bp_tgt
->placed_address
);
4967 p
+= hexnumstr (p
, addr
);
4968 sprintf (p
, ",%d", bp_tgt
->placed_size
);
4971 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4973 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
]))
4979 case PACKET_UNKNOWN
:
4984 #ifdef DEPRECATED_REMOTE_BREAKPOINT
4985 bp_tgt
->placed_size
= bp_tgt
->shadow_len
= sizeof big_break_insn
;
4986 val
= target_read_memory (addr
, bp_tgt
->shadow_contents
, bp_tgt
->shadow_len
);
4990 if (TARGET_BYTE_ORDER
== BFD_ENDIAN_BIG
)
4991 val
= target_write_memory (addr
, (char *) big_break_insn
,
4992 sizeof big_break_insn
);
4994 val
= target_write_memory (addr
, (char *) little_break_insn
,
4995 sizeof little_break_insn
);
5000 return memory_insert_breakpoint (bp_tgt
);
5001 #endif /* DEPRECATED_REMOTE_BREAKPOINT */
5005 remote_remove_breakpoint (struct bp_target_info
*bp_tgt
)
5007 CORE_ADDR addr
= bp_tgt
->placed_address
;
5008 struct remote_state
*rs
= get_remote_state ();
5011 if (remote_protocol_packets
[PACKET_Z0
].support
!= PACKET_DISABLE
)
5019 addr
= (ULONGEST
) remote_address_masked (bp_tgt
->placed_address
);
5020 p
+= hexnumstr (p
, addr
);
5021 sprintf (p
, ",%d", bp_tgt
->placed_size
);
5024 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5026 return (rs
->buf
[0] == 'E');
5029 #ifdef DEPRECATED_REMOTE_BREAKPOINT
5030 return target_write_memory (bp_tgt
->placed_address
, bp_tgt
->shadow_contents
,
5031 bp_tgt
->shadow_len
);
5033 return memory_remove_breakpoint (bp_tgt
);
5034 #endif /* DEPRECATED_REMOTE_BREAKPOINT */
5038 watchpoint_to_Z_packet (int type
)
5043 return Z_PACKET_WRITE_WP
;
5046 return Z_PACKET_READ_WP
;
5049 return Z_PACKET_ACCESS_WP
;
5052 internal_error (__FILE__
, __LINE__
,
5053 _("hw_bp_to_z: bad watchpoint type %d"), type
);
5058 remote_insert_watchpoint (CORE_ADDR addr
, int len
, int type
)
5060 struct remote_state
*rs
= get_remote_state ();
5062 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
5064 if (remote_protocol_packets
[PACKET_Z0
+ packet
].support
== PACKET_DISABLE
)
5067 sprintf (rs
->buf
, "Z%x,", packet
);
5068 p
= strchr (rs
->buf
, '\0');
5069 addr
= remote_address_masked (addr
);
5070 p
+= hexnumstr (p
, (ULONGEST
) addr
);
5071 sprintf (p
, ",%x", len
);
5074 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5076 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
+ packet
]))
5079 case PACKET_UNKNOWN
:
5084 internal_error (__FILE__
, __LINE__
,
5085 _("remote_insert_watchpoint: reached end of function"));
5090 remote_remove_watchpoint (CORE_ADDR addr
, int len
, int type
)
5092 struct remote_state
*rs
= get_remote_state ();
5094 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
5096 if (remote_protocol_packets
[PACKET_Z0
+ packet
].support
== PACKET_DISABLE
)
5099 sprintf (rs
->buf
, "z%x,", packet
);
5100 p
= strchr (rs
->buf
, '\0');
5101 addr
= remote_address_masked (addr
);
5102 p
+= hexnumstr (p
, (ULONGEST
) addr
);
5103 sprintf (p
, ",%x", len
);
5105 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5107 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
+ packet
]))
5110 case PACKET_UNKNOWN
:
5115 internal_error (__FILE__
, __LINE__
,
5116 _("remote_remove_watchpoint: reached end of function"));
5120 int remote_hw_watchpoint_limit
= -1;
5121 int remote_hw_breakpoint_limit
= -1;
5124 remote_check_watch_resources (int type
, int cnt
, int ot
)
5126 if (type
== bp_hardware_breakpoint
)
5128 if (remote_hw_breakpoint_limit
== 0)
5130 else if (remote_hw_breakpoint_limit
< 0)
5132 else if (cnt
<= remote_hw_breakpoint_limit
)
5137 if (remote_hw_watchpoint_limit
== 0)
5139 else if (remote_hw_watchpoint_limit
< 0)
5143 else if (cnt
<= remote_hw_watchpoint_limit
)
5150 remote_stopped_by_watchpoint (void)
5152 return remote_stopped_by_watchpoint_p
;
5155 extern int stepped_after_stopped_by_watchpoint
;
5158 remote_stopped_data_address (struct target_ops
*target
, CORE_ADDR
*addr_p
)
5161 if (remote_stopped_by_watchpoint ()
5162 || stepped_after_stopped_by_watchpoint
)
5164 *addr_p
= remote_watch_data_address
;
5173 remote_insert_hw_breakpoint (struct bp_target_info
*bp_tgt
)
5176 struct remote_state
*rs
= get_remote_state ();
5179 /* The length field should be set to the size of a breakpoint
5180 instruction, even though we aren't inserting one ourselves. */
5182 BREAKPOINT_FROM_PC (&bp_tgt
->placed_address
, &bp_tgt
->placed_size
);
5184 if (remote_protocol_packets
[PACKET_Z1
].support
== PACKET_DISABLE
)
5191 addr
= remote_address_masked (bp_tgt
->placed_address
);
5192 p
+= hexnumstr (p
, (ULONGEST
) addr
);
5193 sprintf (p
, ",%x", bp_tgt
->placed_size
);
5196 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5198 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z1
]))
5201 case PACKET_UNKNOWN
:
5206 internal_error (__FILE__
, __LINE__
,
5207 _("remote_insert_hw_breakpoint: reached end of function"));
5212 remote_remove_hw_breakpoint (struct bp_target_info
*bp_tgt
)
5215 struct remote_state
*rs
= get_remote_state ();
5218 if (remote_protocol_packets
[PACKET_Z1
].support
== PACKET_DISABLE
)
5225 addr
= remote_address_masked (bp_tgt
->placed_address
);
5226 p
+= hexnumstr (p
, (ULONGEST
) addr
);
5227 sprintf (p
, ",%x", bp_tgt
->placed_size
);
5230 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5232 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z1
]))
5235 case PACKET_UNKNOWN
:
5240 internal_error (__FILE__
, __LINE__
,
5241 _("remote_remove_hw_breakpoint: reached end of function"));
5244 /* Some targets are only capable of doing downloads, and afterwards
5245 they switch to the remote serial protocol. This function provides
5246 a clean way to get from the download target to the remote target.
5247 It's basically just a wrapper so that we don't have to expose any
5248 of the internal workings of remote.c.
5250 Prior to calling this routine, you should shutdown the current
5251 target code, else you will get the "A program is being debugged
5252 already..." message. Usually a call to pop_target() suffices. */
5255 push_remote_target (char *name
, int from_tty
)
5257 printf_filtered (_("Switching to remote protocol\n"));
5258 remote_open (name
, from_tty
);
5261 /* Table used by the crc32 function to calcuate the checksum. */
5263 static unsigned long crc32_table
[256] =
5266 static unsigned long
5267 crc32 (unsigned char *buf
, int len
, unsigned int crc
)
5269 if (!crc32_table
[1])
5271 /* Initialize the CRC table and the decoding table. */
5275 for (i
= 0; i
< 256; i
++)
5277 for (c
= i
<< 24, j
= 8; j
> 0; --j
)
5278 c
= c
& 0x80000000 ? (c
<< 1) ^ 0x04c11db7 : (c
<< 1);
5285 crc
= (crc
<< 8) ^ crc32_table
[((crc
>> 24) ^ *buf
) & 255];
5291 /* compare-sections command
5293 With no arguments, compares each loadable section in the exec bfd
5294 with the same memory range on the target, and reports mismatches.
5295 Useful for verifying the image on the target against the exec file.
5296 Depends on the target understanding the new "qCRC:" request. */
5298 /* FIXME: cagney/1999-10-26: This command should be broken down into a
5299 target method (target verify memory) and generic version of the
5300 actual command. This will allow other high-level code (especially
5301 generic_load()) to make use of this target functionality. */
5304 compare_sections_command (char *args
, int from_tty
)
5306 struct remote_state
*rs
= get_remote_state ();
5308 unsigned long host_crc
, target_crc
;
5309 extern bfd
*exec_bfd
;
5310 struct cleanup
*old_chain
;
5313 const char *sectname
;
5320 error (_("command cannot be used without an exec file"));
5321 if (!current_target
.to_shortname
||
5322 strcmp (current_target
.to_shortname
, "remote") != 0)
5323 error (_("command can only be used with remote target"));
5325 for (s
= exec_bfd
->sections
; s
; s
= s
->next
)
5327 if (!(s
->flags
& SEC_LOAD
))
5328 continue; /* skip non-loadable section */
5330 size
= bfd_get_section_size (s
);
5332 continue; /* skip zero-length section */
5334 sectname
= bfd_get_section_name (exec_bfd
, s
);
5335 if (args
&& strcmp (args
, sectname
) != 0)
5336 continue; /* not the section selected by user */
5338 matched
= 1; /* do this section */
5340 /* FIXME: assumes lma can fit into long. */
5341 xsnprintf (rs
->buf
, get_remote_packet_size (), "qCRC:%lx,%lx",
5342 (long) lma
, (long) size
);
5345 /* Be clever; compute the host_crc before waiting for target
5347 sectdata
= xmalloc (size
);
5348 old_chain
= make_cleanup (xfree
, sectdata
);
5349 bfd_get_section_contents (exec_bfd
, s
, sectdata
, 0, size
);
5350 host_crc
= crc32 ((unsigned char *) sectdata
, size
, 0xffffffff);
5352 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5353 if (rs
->buf
[0] == 'E')
5354 error (_("target memory fault, section %s, range 0x%s -- 0x%s"),
5355 sectname
, paddr (lma
), paddr (lma
+ size
));
5356 if (rs
->buf
[0] != 'C')
5357 error (_("remote target does not support this operation"));
5359 for (target_crc
= 0, tmp
= &rs
->buf
[1]; *tmp
; tmp
++)
5360 target_crc
= target_crc
* 16 + fromhex (*tmp
);
5362 printf_filtered ("Section %s, range 0x%s -- 0x%s: ",
5363 sectname
, paddr (lma
), paddr (lma
+ size
));
5364 if (host_crc
== target_crc
)
5365 printf_filtered ("matched.\n");
5368 printf_filtered ("MIS-MATCHED!\n");
5372 do_cleanups (old_chain
);
5375 warning (_("One or more sections of the remote executable does not match\n\
5376 the loaded file\n"));
5377 if (args
&& !matched
)
5378 printf_filtered (_("No loaded section named '%s'.\n"), args
);
5381 /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet.
5382 Data at OFFSET, of up to LEN bytes, is read into READBUF; the
5383 number of bytes read is returned, or 0 for EOF, or -1 for error.
5384 The number of bytes read may be less than LEN without indicating an
5385 EOF. PACKET is checked and updated to indicate whether the remote
5386 target supports this object. */
5389 remote_read_qxfer (struct target_ops
*ops
, const char *object_name
,
5391 gdb_byte
*readbuf
, ULONGEST offset
, LONGEST len
,
5392 struct packet_config
*packet
)
5394 static char *finished_object
;
5395 static char *finished_annex
;
5396 static ULONGEST finished_offset
;
5398 struct remote_state
*rs
= get_remote_state ();
5399 unsigned int total
= 0;
5400 LONGEST i
, n
, packet_len
;
5402 if (packet
->support
== PACKET_DISABLE
)
5405 /* Check whether we've cached an end-of-object packet that matches
5407 if (finished_object
)
5409 if (strcmp (object_name
, finished_object
) == 0
5410 && strcmp (annex
? annex
: "", finished_annex
) == 0
5411 && offset
== finished_offset
)
5414 /* Otherwise, we're now reading something different. Discard
5416 xfree (finished_object
);
5417 xfree (finished_annex
);
5418 finished_object
= NULL
;
5419 finished_annex
= NULL
;
5422 /* Request only enough to fit in a single packet. The actual data
5423 may not, since we don't know how much of it will need to be escaped;
5424 the target is free to respond with slightly less data. We subtract
5425 five to account for the response type and the protocol frame. */
5426 n
= min (get_remote_packet_size () - 5, len
);
5427 snprintf (rs
->buf
, get_remote_packet_size () - 4, "qXfer:%s:read:%s:%s,%s",
5428 object_name
, annex
? annex
: "",
5429 phex_nz (offset
, sizeof offset
),
5430 phex_nz (n
, sizeof n
));
5431 i
= putpkt (rs
->buf
);
5436 packet_len
= getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0);
5437 if (packet_len
< 0 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
5440 if (rs
->buf
[0] != 'l' && rs
->buf
[0] != 'm')
5441 error (_("Unknown remote qXfer reply: %s"), rs
->buf
);
5443 /* 'm' means there is (or at least might be) more data after this
5444 batch. That does not make sense unless there's at least one byte
5445 of data in this reply. */
5446 if (rs
->buf
[0] == 'm' && packet_len
== 1)
5447 error (_("Remote qXfer reply contained no data."));
5449 /* Got some data. */
5450 i
= remote_unescape_input (rs
->buf
+ 1, packet_len
- 1, readbuf
, n
);
5452 /* 'l' is an EOF marker, possibly including a final block of data,
5453 or possibly empty. Record it to bypass the next read, if one is
5455 if (rs
->buf
[0] == 'l')
5457 finished_object
= xstrdup (object_name
);
5458 finished_annex
= xstrdup (annex
? annex
: "");
5459 finished_offset
= offset
+ i
;
5466 remote_xfer_partial (struct target_ops
*ops
, enum target_object object
,
5467 const char *annex
, gdb_byte
*readbuf
,
5468 const gdb_byte
*writebuf
, ULONGEST offset
, LONGEST len
)
5470 struct remote_state
*rs
= get_remote_state ();
5475 /* Handle memory using the standard memory routines. */
5476 if (object
== TARGET_OBJECT_MEMORY
)
5481 if (writebuf
!= NULL
)
5482 xfered
= remote_write_bytes (offset
, writebuf
, len
);
5484 xfered
= remote_read_bytes (offset
, readbuf
, len
);
5488 else if (xfered
== 0 && errno
== 0)
5494 /* Only handle flash writes. */
5495 if (writebuf
!= NULL
)
5501 case TARGET_OBJECT_FLASH
:
5502 xfered
= remote_flash_write (ops
, offset
, len
, writebuf
);
5506 else if (xfered
== 0 && errno
== 0)
5516 /* Map pre-existing objects onto letters. DO NOT do this for new
5517 objects!!! Instead specify new query packets. */
5520 case TARGET_OBJECT_AVR
:
5524 case TARGET_OBJECT_AUXV
:
5525 gdb_assert (annex
== NULL
);
5526 return remote_read_qxfer (ops
, "auxv", annex
, readbuf
, offset
, len
,
5527 &remote_protocol_packets
[PACKET_qXfer_auxv
]);
5529 case TARGET_OBJECT_MEMORY_MAP
:
5530 gdb_assert (annex
== NULL
);
5531 return remote_read_qxfer (ops
, "memory-map", annex
, readbuf
, offset
, len
,
5532 &remote_protocol_packets
[PACKET_qXfer_memory_map
]);
5538 /* Note: a zero OFFSET and LEN can be used to query the minimum
5540 if (offset
== 0 && len
== 0)
5541 return (get_remote_packet_size ());
5542 /* Minimum outbuf size is get_remote_packet_size (). If LEN is not
5543 large enough let the caller deal with it. */
5544 if (len
< get_remote_packet_size ())
5546 len
= get_remote_packet_size ();
5548 /* Except for querying the minimum buffer size, target must be open. */
5550 error (_("remote query is only available after target open"));
5552 gdb_assert (annex
!= NULL
);
5553 gdb_assert (readbuf
!= NULL
);
5559 /* We used one buffer char for the remote protocol q command and
5560 another for the query type. As the remote protocol encapsulation
5561 uses 4 chars plus one extra in case we are debugging
5562 (remote_debug), we have PBUFZIZ - 7 left to pack the query
5565 while (annex
[i
] && (i
< (get_remote_packet_size () - 8)))
5567 /* Bad caller may have sent forbidden characters. */
5568 gdb_assert (isprint (annex
[i
]) && annex
[i
] != '$' && annex
[i
] != '#');
5573 gdb_assert (annex
[i
] == '\0');
5575 i
= putpkt (rs
->buf
);
5579 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5580 strcpy ((char *) readbuf
, rs
->buf
);
5582 return strlen ((char *) readbuf
);
5586 remote_rcmd (char *command
,
5587 struct ui_file
*outbuf
)
5589 struct remote_state
*rs
= get_remote_state ();
5593 error (_("remote rcmd is only available after target open"));
5595 /* Send a NULL command across as an empty command. */
5596 if (command
== NULL
)
5599 /* The query prefix. */
5600 strcpy (rs
->buf
, "qRcmd,");
5601 p
= strchr (rs
->buf
, '\0');
5603 if ((strlen (rs
->buf
) + strlen (command
) * 2 + 8/*misc*/) > get_remote_packet_size ())
5604 error (_("\"monitor\" command ``%s'' is too long."), command
);
5606 /* Encode the actual command. */
5607 bin2hex ((gdb_byte
*) command
, p
, 0);
5609 if (putpkt (rs
->buf
) < 0)
5610 error (_("Communication problem with target."));
5612 /* get/display the response */
5617 /* XXX - see also tracepoint.c:remote_get_noisy_reply(). */
5619 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5622 error (_("Target does not support this command."));
5623 if (buf
[0] == 'O' && buf
[1] != 'K')
5625 remote_console_output (buf
+ 1); /* 'O' message from stub. */
5628 if (strcmp (buf
, "OK") == 0)
5630 if (strlen (buf
) == 3 && buf
[0] == 'E'
5631 && isdigit (buf
[1]) && isdigit (buf
[2]))
5633 error (_("Protocol error with Rcmd"));
5635 for (p
= buf
; p
[0] != '\0' && p
[1] != '\0'; p
+= 2)
5637 char c
= (fromhex (p
[0]) << 4) + fromhex (p
[1]);
5638 fputc_unfiltered (c
, outbuf
);
5644 static VEC(mem_region_s
) *
5645 remote_memory_map (struct target_ops
*ops
)
5647 VEC(mem_region_s
) *result
= NULL
;
5648 char *text
= target_read_stralloc (¤t_target
,
5649 TARGET_OBJECT_MEMORY_MAP
, NULL
);
5653 struct cleanup
*back_to
= make_cleanup (xfree
, text
);
5654 result
= parse_memory_map (text
);
5655 do_cleanups (back_to
);
5662 packet_command (char *args
, int from_tty
)
5664 struct remote_state
*rs
= get_remote_state ();
5667 error (_("command can only be used with remote target"));
5670 error (_("remote-packet command requires packet text as argument"));
5672 puts_filtered ("sending: ");
5673 print_packet (args
);
5674 puts_filtered ("\n");
5677 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5678 puts_filtered ("received: ");
5679 print_packet (rs
->buf
);
5680 puts_filtered ("\n");
5684 /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */
5686 static void display_thread_info (struct gdb_ext_thread_info
*info
);
5688 static void threadset_test_cmd (char *cmd
, int tty
);
5690 static void threadalive_test (char *cmd
, int tty
);
5692 static void threadlist_test_cmd (char *cmd
, int tty
);
5694 int get_and_display_threadinfo (threadref
*ref
);
5696 static void threadinfo_test_cmd (char *cmd
, int tty
);
5698 static int thread_display_step (threadref
*ref
, void *context
);
5700 static void threadlist_update_test_cmd (char *cmd
, int tty
);
5702 static void init_remote_threadtests (void);
5704 #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */
5707 threadset_test_cmd (char *cmd
, int tty
)
5709 int sample_thread
= SAMPLE_THREAD
;
5711 printf_filtered (_("Remote threadset test\n"));
5712 set_thread (sample_thread
, 1);
5717 threadalive_test (char *cmd
, int tty
)
5719 int sample_thread
= SAMPLE_THREAD
;
5721 if (remote_thread_alive (pid_to_ptid (sample_thread
)))
5722 printf_filtered ("PASS: Thread alive test\n");
5724 printf_filtered ("FAIL: Thread alive test\n");
5727 void output_threadid (char *title
, threadref
*ref
);
5730 output_threadid (char *title
, threadref
*ref
)
5734 pack_threadid (&hexid
[0], ref
); /* Convert threead id into hex. */
5736 printf_filtered ("%s %s\n", title
, (&hexid
[0]));
5740 threadlist_test_cmd (char *cmd
, int tty
)
5743 threadref nextthread
;
5744 int done
, result_count
;
5745 threadref threadlist
[3];
5747 printf_filtered ("Remote Threadlist test\n");
5748 if (!remote_get_threadlist (startflag
, &nextthread
, 3, &done
,
5749 &result_count
, &threadlist
[0]))
5750 printf_filtered ("FAIL: threadlist test\n");
5753 threadref
*scan
= threadlist
;
5754 threadref
*limit
= scan
+ result_count
;
5756 while (scan
< limit
)
5757 output_threadid (" thread ", scan
++);
5762 display_thread_info (struct gdb_ext_thread_info
*info
)
5764 output_threadid ("Threadid: ", &info
->threadid
);
5765 printf_filtered ("Name: %s\n ", info
->shortname
);
5766 printf_filtered ("State: %s\n", info
->display
);
5767 printf_filtered ("other: %s\n\n", info
->more_display
);
5771 get_and_display_threadinfo (threadref
*ref
)
5775 struct gdb_ext_thread_info threadinfo
;
5777 set
= TAG_THREADID
| TAG_EXISTS
| TAG_THREADNAME
5778 | TAG_MOREDISPLAY
| TAG_DISPLAY
;
5779 if (0 != (result
= remote_get_threadinfo (ref
, set
, &threadinfo
)))
5780 display_thread_info (&threadinfo
);
5785 threadinfo_test_cmd (char *cmd
, int tty
)
5787 int athread
= SAMPLE_THREAD
;
5791 int_to_threadref (&thread
, athread
);
5792 printf_filtered ("Remote Threadinfo test\n");
5793 if (!get_and_display_threadinfo (&thread
))
5794 printf_filtered ("FAIL cannot get thread info\n");
5798 thread_display_step (threadref
*ref
, void *context
)
5800 /* output_threadid(" threadstep ",ref); *//* simple test */
5801 return get_and_display_threadinfo (ref
);
5805 threadlist_update_test_cmd (char *cmd
, int tty
)
5807 printf_filtered ("Remote Threadlist update test\n");
5808 remote_threadlist_iterator (thread_display_step
, 0, CRAZY_MAX_THREADS
);
5812 init_remote_threadtests (void)
5814 add_com ("tlist", class_obscure
, threadlist_test_cmd
, _("\
5815 Fetch and print the remote list of thread identifiers, one pkt only"));
5816 add_com ("tinfo", class_obscure
, threadinfo_test_cmd
,
5817 _("Fetch and display info about one thread"));
5818 add_com ("tset", class_obscure
, threadset_test_cmd
,
5819 _("Test setting to a different thread"));
5820 add_com ("tupd", class_obscure
, threadlist_update_test_cmd
,
5821 _("Iterate through updating all remote thread info"));
5822 add_com ("talive", class_obscure
, threadalive_test
,
5823 _(" Remote thread alive test "));
5828 /* Convert a thread ID to a string. Returns the string in a static
5832 remote_pid_to_str (ptid_t ptid
)
5834 static char buf
[32];
5836 xsnprintf (buf
, sizeof buf
, "thread %d", ptid_get_pid (ptid
));
5840 /* Get the address of the thread local variable in OBJFILE which is
5841 stored at OFFSET within the thread local storage for thread PTID. */
5844 remote_get_thread_local_address (ptid_t ptid
, CORE_ADDR lm
, CORE_ADDR offset
)
5846 if (remote_protocol_packets
[PACKET_qGetTLSAddr
].support
!= PACKET_DISABLE
)
5848 struct remote_state
*rs
= get_remote_state ();
5850 enum packet_result result
;
5852 strcpy (p
, "qGetTLSAddr:");
5854 p
+= hexnumstr (p
, PIDGET (ptid
));
5856 p
+= hexnumstr (p
, offset
);
5858 p
+= hexnumstr (p
, lm
);
5862 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5863 result
= packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_qGetTLSAddr
]);
5864 if (result
== PACKET_OK
)
5868 unpack_varlen_hex (rs
->buf
, &result
);
5871 else if (result
== PACKET_UNKNOWN
)
5872 throw_error (TLS_GENERIC_ERROR
,
5873 _("Remote target doesn't support qGetTLSAddr packet"));
5875 throw_error (TLS_GENERIC_ERROR
,
5876 _("Remote target failed to process qGetTLSAddr request"));
5879 throw_error (TLS_GENERIC_ERROR
,
5880 _("TLS not supported or disabled on this target"));
5886 init_remote_ops (void)
5888 remote_ops
.to_shortname
= "remote";
5889 remote_ops
.to_longname
= "Remote serial target in gdb-specific protocol";
5891 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
5892 Specify the serial device it is connected to\n\
5893 (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).";
5894 remote_ops
.to_open
= remote_open
;
5895 remote_ops
.to_close
= remote_close
;
5896 remote_ops
.to_detach
= remote_detach
;
5897 remote_ops
.to_disconnect
= remote_disconnect
;
5898 remote_ops
.to_resume
= remote_resume
;
5899 remote_ops
.to_wait
= remote_wait
;
5900 remote_ops
.to_fetch_registers
= remote_fetch_registers
;
5901 remote_ops
.to_store_registers
= remote_store_registers
;
5902 remote_ops
.to_prepare_to_store
= remote_prepare_to_store
;
5903 remote_ops
.deprecated_xfer_memory
= remote_xfer_memory
;
5904 remote_ops
.to_files_info
= remote_files_info
;
5905 remote_ops
.to_insert_breakpoint
= remote_insert_breakpoint
;
5906 remote_ops
.to_remove_breakpoint
= remote_remove_breakpoint
;
5907 remote_ops
.to_stopped_by_watchpoint
= remote_stopped_by_watchpoint
;
5908 remote_ops
.to_stopped_data_address
= remote_stopped_data_address
;
5909 remote_ops
.to_can_use_hw_breakpoint
= remote_check_watch_resources
;
5910 remote_ops
.to_insert_hw_breakpoint
= remote_insert_hw_breakpoint
;
5911 remote_ops
.to_remove_hw_breakpoint
= remote_remove_hw_breakpoint
;
5912 remote_ops
.to_insert_watchpoint
= remote_insert_watchpoint
;
5913 remote_ops
.to_remove_watchpoint
= remote_remove_watchpoint
;
5914 remote_ops
.to_kill
= remote_kill
;
5915 remote_ops
.to_load
= generic_load
;
5916 remote_ops
.to_mourn_inferior
= remote_mourn
;
5917 remote_ops
.to_thread_alive
= remote_thread_alive
;
5918 remote_ops
.to_find_new_threads
= remote_threads_info
;
5919 remote_ops
.to_pid_to_str
= remote_pid_to_str
;
5920 remote_ops
.to_extra_thread_info
= remote_threads_extra_info
;
5921 remote_ops
.to_stop
= remote_stop
;
5922 remote_ops
.to_xfer_partial
= remote_xfer_partial
;
5923 remote_ops
.to_rcmd
= remote_rcmd
;
5924 remote_ops
.to_get_thread_local_address
= remote_get_thread_local_address
;
5925 remote_ops
.to_stratum
= process_stratum
;
5926 remote_ops
.to_has_all_memory
= 1;
5927 remote_ops
.to_has_memory
= 1;
5928 remote_ops
.to_has_stack
= 1;
5929 remote_ops
.to_has_registers
= 1;
5930 remote_ops
.to_has_execution
= 1;
5931 remote_ops
.to_has_thread_control
= tc_schedlock
; /* can lock scheduler */
5932 remote_ops
.to_magic
= OPS_MAGIC
;
5933 remote_ops
.to_memory_map
= remote_memory_map
;
5934 remote_ops
.to_flash_erase
= remote_flash_erase
;
5935 remote_ops
.to_flash_done
= remote_flash_done
;
5938 /* Set up the extended remote vector by making a copy of the standard
5939 remote vector and adding to it. */
5942 init_extended_remote_ops (void)
5944 extended_remote_ops
= remote_ops
;
5946 extended_remote_ops
.to_shortname
= "extended-remote";
5947 extended_remote_ops
.to_longname
=
5948 "Extended remote serial target in gdb-specific protocol";
5949 extended_remote_ops
.to_doc
=
5950 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
5951 Specify the serial device it is connected to (e.g. /dev/ttya).",
5952 extended_remote_ops
.to_open
= extended_remote_open
;
5953 extended_remote_ops
.to_create_inferior
= extended_remote_create_inferior
;
5954 extended_remote_ops
.to_mourn_inferior
= extended_remote_mourn
;
5958 remote_can_async_p (void)
5960 /* We're async whenever the serial device is. */
5961 return (current_target
.to_async_mask_value
) && serial_can_async_p (remote_desc
);
5965 remote_is_async_p (void)
5967 /* We're async whenever the serial device is. */
5968 return (current_target
.to_async_mask_value
) && serial_is_async_p (remote_desc
);
5971 /* Pass the SERIAL event on and up to the client. One day this code
5972 will be able to delay notifying the client of an event until the
5973 point where an entire packet has been received. */
5975 static void (*async_client_callback
) (enum inferior_event_type event_type
,
5977 static void *async_client_context
;
5978 static serial_event_ftype remote_async_serial_handler
;
5981 remote_async_serial_handler (struct serial
*scb
, void *context
)
5983 /* Don't propogate error information up to the client. Instead let
5984 the client find out about the error by querying the target. */
5985 async_client_callback (INF_REG_EVENT
, async_client_context
);
5989 remote_async (void (*callback
) (enum inferior_event_type event_type
,
5990 void *context
), void *context
)
5992 if (current_target
.to_async_mask_value
== 0)
5993 internal_error (__FILE__
, __LINE__
,
5994 _("Calling remote_async when async is masked"));
5996 if (callback
!= NULL
)
5998 serial_async (remote_desc
, remote_async_serial_handler
, NULL
);
5999 async_client_callback
= callback
;
6000 async_client_context
= context
;
6003 serial_async (remote_desc
, NULL
, NULL
);
6006 /* Target async and target extended-async.
6008 This are temporary targets, until it is all tested. Eventually
6009 async support will be incorporated int the usual 'remote'
6013 init_remote_async_ops (void)
6015 remote_async_ops
.to_shortname
= "async";
6016 remote_async_ops
.to_longname
=
6017 "Remote serial target in async version of the gdb-specific protocol";
6018 remote_async_ops
.to_doc
=
6019 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
6020 Specify the serial device it is connected to (e.g. /dev/ttya).";
6021 remote_async_ops
.to_open
= remote_async_open
;
6022 remote_async_ops
.to_close
= remote_close
;
6023 remote_async_ops
.to_detach
= remote_detach
;
6024 remote_async_ops
.to_disconnect
= remote_disconnect
;
6025 remote_async_ops
.to_resume
= remote_async_resume
;
6026 remote_async_ops
.to_wait
= remote_async_wait
;
6027 remote_async_ops
.to_fetch_registers
= remote_fetch_registers
;
6028 remote_async_ops
.to_store_registers
= remote_store_registers
;
6029 remote_async_ops
.to_prepare_to_store
= remote_prepare_to_store
;
6030 remote_async_ops
.deprecated_xfer_memory
= remote_xfer_memory
;
6031 remote_async_ops
.to_files_info
= remote_files_info
;
6032 remote_async_ops
.to_insert_breakpoint
= remote_insert_breakpoint
;
6033 remote_async_ops
.to_remove_breakpoint
= remote_remove_breakpoint
;
6034 remote_async_ops
.to_can_use_hw_breakpoint
= remote_check_watch_resources
;
6035 remote_async_ops
.to_insert_hw_breakpoint
= remote_insert_hw_breakpoint
;
6036 remote_async_ops
.to_remove_hw_breakpoint
= remote_remove_hw_breakpoint
;
6037 remote_async_ops
.to_insert_watchpoint
= remote_insert_watchpoint
;
6038 remote_async_ops
.to_remove_watchpoint
= remote_remove_watchpoint
;
6039 remote_async_ops
.to_stopped_by_watchpoint
= remote_stopped_by_watchpoint
;
6040 remote_async_ops
.to_stopped_data_address
= remote_stopped_data_address
;
6041 remote_async_ops
.to_terminal_inferior
= remote_async_terminal_inferior
;
6042 remote_async_ops
.to_terminal_ours
= remote_async_terminal_ours
;
6043 remote_async_ops
.to_kill
= remote_async_kill
;
6044 remote_async_ops
.to_load
= generic_load
;
6045 remote_async_ops
.to_mourn_inferior
= remote_async_mourn
;
6046 remote_async_ops
.to_thread_alive
= remote_thread_alive
;
6047 remote_async_ops
.to_find_new_threads
= remote_threads_info
;
6048 remote_async_ops
.to_pid_to_str
= remote_pid_to_str
;
6049 remote_async_ops
.to_extra_thread_info
= remote_threads_extra_info
;
6050 remote_async_ops
.to_stop
= remote_stop
;
6051 remote_async_ops
.to_xfer_partial
= remote_xfer_partial
;
6052 remote_async_ops
.to_rcmd
= remote_rcmd
;
6053 remote_async_ops
.to_stratum
= process_stratum
;
6054 remote_async_ops
.to_has_all_memory
= 1;
6055 remote_async_ops
.to_has_memory
= 1;
6056 remote_async_ops
.to_has_stack
= 1;
6057 remote_async_ops
.to_has_registers
= 1;
6058 remote_async_ops
.to_has_execution
= 1;
6059 remote_async_ops
.to_has_thread_control
= tc_schedlock
; /* can lock scheduler */
6060 remote_async_ops
.to_can_async_p
= remote_can_async_p
;
6061 remote_async_ops
.to_is_async_p
= remote_is_async_p
;
6062 remote_async_ops
.to_async
= remote_async
;
6063 remote_async_ops
.to_async_mask_value
= 1;
6064 remote_async_ops
.to_magic
= OPS_MAGIC
;
6065 remote_async_ops
.to_memory_map
= remote_memory_map
;
6066 remote_async_ops
.to_flash_erase
= remote_flash_erase
;
6067 remote_async_ops
.to_flash_done
= remote_flash_done
;
6070 /* Set up the async extended remote vector by making a copy of the standard
6071 remote vector and adding to it. */
6074 init_extended_async_remote_ops (void)
6076 extended_async_remote_ops
= remote_async_ops
;
6078 extended_async_remote_ops
.to_shortname
= "extended-async";
6079 extended_async_remote_ops
.to_longname
=
6080 "Extended remote serial target in async gdb-specific protocol";
6081 extended_async_remote_ops
.to_doc
=
6082 "Use a remote computer via a serial line, using an async gdb-specific protocol.\n\
6083 Specify the serial device it is connected to (e.g. /dev/ttya).",
6084 extended_async_remote_ops
.to_open
= extended_remote_async_open
;
6085 extended_async_remote_ops
.to_create_inferior
= extended_remote_async_create_inferior
;
6086 extended_async_remote_ops
.to_mourn_inferior
= extended_remote_mourn
;
6090 set_remote_cmd (char *args
, int from_tty
)
6095 show_remote_cmd (char *args
, int from_tty
)
6097 /* We can't just use cmd_show_list here, because we want to skip
6098 the redundant "show remote Z-packet". */
6099 struct cleanup
*showlist_chain
;
6100 struct cmd_list_element
*list
= remote_show_cmdlist
;
6102 showlist_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "showlist");
6103 for (; list
!= NULL
; list
= list
->next
)
6104 if (strcmp (list
->name
, "Z-packet") == 0)
6106 else if (list
->type
== show_cmd
)
6108 struct cleanup
*option_chain
6109 = make_cleanup_ui_out_tuple_begin_end (uiout
, "option");
6110 ui_out_field_string (uiout
, "name", list
->name
);
6111 ui_out_text (uiout
, ": ");
6112 do_setshow_command ((char *) NULL
, from_tty
, list
);
6113 /* Close the tuple. */
6114 do_cleanups (option_chain
);
6119 build_remote_gdbarch_data (void)
6121 remote_address_size
= TARGET_ADDR_BIT
;
6124 /* Saved pointer to previous owner of the new_objfile event. */
6125 static void (*remote_new_objfile_chain
) (struct objfile
*);
6127 /* Function to be called whenever a new objfile (shlib) is detected. */
6129 remote_new_objfile (struct objfile
*objfile
)
6131 if (remote_desc
!= 0) /* Have a remote connection. */
6133 remote_check_symbols (objfile
);
6135 /* Call predecessor on chain, if any. */
6136 if (remote_new_objfile_chain
!= 0 &&
6138 remote_new_objfile_chain (objfile
);
6142 _initialize_remote (void)
6144 struct remote_state
*rs
;
6146 /* architecture specific data */
6147 remote_gdbarch_data_handle
=
6148 gdbarch_data_register_post_init (init_remote_state
);
6150 /* Old tacky stuff. NOTE: This comes after the remote protocol so
6151 that the remote protocol has been initialized. */
6152 DEPRECATED_REGISTER_GDBARCH_SWAP (remote_address_size
);
6153 deprecated_register_gdbarch_swap (NULL
, 0, build_remote_gdbarch_data
);
6155 /* Initialize the per-target state. At the moment there is only one
6156 of these, not one per target. Only one target is active at a
6157 time. The default buffer size is unimportant; it will be expanded
6158 whenever a larger buffer is needed. */
6159 rs
= get_remote_state_raw ();
6161 rs
->buf
= xmalloc (rs
->buf_size
);
6164 add_target (&remote_ops
);
6166 init_extended_remote_ops ();
6167 add_target (&extended_remote_ops
);
6169 init_remote_async_ops ();
6170 add_target (&remote_async_ops
);
6172 init_extended_async_remote_ops ();
6173 add_target (&extended_async_remote_ops
);
6175 /* Hook into new objfile notification. */
6176 remote_new_objfile_chain
= deprecated_target_new_objfile_hook
;
6177 deprecated_target_new_objfile_hook
= remote_new_objfile
;
6180 init_remote_threadtests ();
6183 /* set/show remote ... */
6185 add_prefix_cmd ("remote", class_maintenance
, set_remote_cmd
, _("\
6186 Remote protocol specific variables\n\
6187 Configure various remote-protocol specific variables such as\n\
6188 the packets being used"),
6189 &remote_set_cmdlist
, "set remote ",
6190 0 /* allow-unknown */, &setlist
);
6191 add_prefix_cmd ("remote", class_maintenance
, show_remote_cmd
, _("\
6192 Remote protocol specific variables\n\
6193 Configure various remote-protocol specific variables such as\n\
6194 the packets being used"),
6195 &remote_show_cmdlist
, "show remote ",
6196 0 /* allow-unknown */, &showlist
);
6198 add_cmd ("compare-sections", class_obscure
, compare_sections_command
, _("\
6199 Compare section data on target to the exec file.\n\
6200 Argument is a single section name (default: all loaded sections)."),
6203 add_cmd ("packet", class_maintenance
, packet_command
, _("\
6204 Send an arbitrary packet to a remote target.\n\
6205 maintenance packet TEXT\n\
6206 If GDB is talking to an inferior via the GDB serial protocol, then\n\
6207 this command sends the string TEXT to the inferior, and displays the\n\
6208 response packet. GDB supplies the initial `$' character, and the\n\
6209 terminating `#' character and checksum."),
6212 add_setshow_boolean_cmd ("remotebreak", no_class
, &remote_break
, _("\
6213 Set whether to send break if interrupted."), _("\
6214 Show whether to send break if interrupted."), _("\
6215 If set, a break, instead of a cntrl-c, is sent to the remote target."),
6216 NULL
, NULL
, /* FIXME: i18n: Whether to send break if interrupted is %s. */
6217 &setlist
, &showlist
);
6219 /* Install commands for configuring memory read/write packets. */
6221 add_cmd ("remotewritesize", no_class
, set_memory_write_packet_size
, _("\
6222 Set the maximum number of bytes per memory write packet (deprecated)."),
6224 add_cmd ("remotewritesize", no_class
, show_memory_write_packet_size
, _("\
6225 Show the maximum number of bytes per memory write packet (deprecated)."),
6227 add_cmd ("memory-write-packet-size", no_class
,
6228 set_memory_write_packet_size
, _("\
6229 Set the maximum number of bytes per memory-write packet.\n\
6230 Specify the number of bytes in a packet or 0 (zero) for the\n\
6231 default packet size. The actual limit is further reduced\n\
6232 dependent on the target. Specify ``fixed'' to disable the\n\
6233 further restriction and ``limit'' to enable that restriction."),
6234 &remote_set_cmdlist
);
6235 add_cmd ("memory-read-packet-size", no_class
,
6236 set_memory_read_packet_size
, _("\
6237 Set the maximum number of bytes per memory-read packet.\n\
6238 Specify the number of bytes in a packet or 0 (zero) for the\n\
6239 default packet size. The actual limit is further reduced\n\
6240 dependent on the target. Specify ``fixed'' to disable the\n\
6241 further restriction and ``limit'' to enable that restriction."),
6242 &remote_set_cmdlist
);
6243 add_cmd ("memory-write-packet-size", no_class
,
6244 show_memory_write_packet_size
,
6245 _("Show the maximum number of bytes per memory-write packet."),
6246 &remote_show_cmdlist
);
6247 add_cmd ("memory-read-packet-size", no_class
,
6248 show_memory_read_packet_size
,
6249 _("Show the maximum number of bytes per memory-read packet."),
6250 &remote_show_cmdlist
);
6252 add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class
,
6253 &remote_hw_watchpoint_limit
, _("\
6254 Set the maximum number of target hardware watchpoints."), _("\
6255 Show the maximum number of target hardware watchpoints."), _("\
6256 Specify a negative limit for unlimited."),
6257 NULL
, NULL
, /* FIXME: i18n: The maximum number of target hardware watchpoints is %s. */
6258 &remote_set_cmdlist
, &remote_show_cmdlist
);
6259 add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class
,
6260 &remote_hw_breakpoint_limit
, _("\
6261 Set the maximum number of target hardware breakpoints."), _("\
6262 Show the maximum number of target hardware breakpoints."), _("\
6263 Specify a negative limit for unlimited."),
6264 NULL
, NULL
, /* FIXME: i18n: The maximum number of target hardware breakpoints is %s. */
6265 &remote_set_cmdlist
, &remote_show_cmdlist
);
6267 add_setshow_integer_cmd ("remoteaddresssize", class_obscure
,
6268 &remote_address_size
, _("\
6269 Set the maximum size of the address (in bits) in a memory packet."), _("\
6270 Show the maximum size of the address (in bits) in a memory packet."), NULL
,
6272 NULL
, /* FIXME: i18n: */
6273 &setlist
, &showlist
);
6275 add_packet_config_cmd (&remote_protocol_packets
[PACKET_X
],
6276 "X", "binary-download", 1);
6278 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vCont
],
6279 "vCont", "verbose-resume", 0);
6281 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSymbol
],
6282 "qSymbol", "symbol-lookup", 0);
6284 add_packet_config_cmd (&remote_protocol_packets
[PACKET_P
],
6285 "P", "set-register", 1);
6287 add_packet_config_cmd (&remote_protocol_packets
[PACKET_p
],
6288 "p", "fetch-register", 1);
6290 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z0
],
6291 "Z0", "software-breakpoint", 0);
6293 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z1
],
6294 "Z1", "hardware-breakpoint", 0);
6296 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z2
],
6297 "Z2", "write-watchpoint", 0);
6299 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z3
],
6300 "Z3", "read-watchpoint", 0);
6302 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z4
],
6303 "Z4", "access-watchpoint", 0);
6305 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_auxv
],
6306 "qXfer:auxv:read", "read-aux-vector", 0);
6308 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_memory_map
],
6309 "qXfer:memory-map:read", "memory-map", 0);
6311 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qGetTLSAddr
],
6312 "qGetTLSAddr", "get-thread-local-storage-address",
6315 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSupported
],
6316 "qSupported", "supported-packets", 0);
6318 /* Keep the old ``set remote Z-packet ...'' working. Each individual
6319 Z sub-packet has its own set and show commands, but users may
6320 have sets to this variable in their .gdbinit files (or in their
6322 add_setshow_auto_boolean_cmd ("Z-packet", class_obscure
,
6323 &remote_Z_packet_detect
, _("\
6324 Set use of remote protocol `Z' packets"), _("\
6325 Show use of remote protocol `Z' packets "), _("\
6326 When set, GDB will attempt to use the remote breakpoint and watchpoint\n\
6328 set_remote_protocol_Z_packet_cmd
,
6329 show_remote_protocol_Z_packet_cmd
, /* FIXME: i18n: Use of remote protocol `Z' packets is %s. */
6330 &remote_set_cmdlist
, &remote_show_cmdlist
);
6332 /* Eventually initialize fileio. See fileio.c */
6333 initialize_remote_fileio (remote_set_cmdlist
, remote_show_cmdlist
);