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_exception. */
1993 remote_start_remote (struct ui_out
*uiout
, void *from_tty_p
)
1995 int from_tty
= * (int *) from_tty_p
;
1997 immediate_quit
++; /* Allow user to interrupt it. */
1999 /* Ack any packet which the remote side has already sent. */
2000 serial_write (remote_desc
, "+", 1);
2002 /* Let the stub know that we want it to return the thread. */
2005 inferior_ptid
= remote_current_thread (inferior_ptid
);
2007 get_offsets (); /* Get text, data & bss offsets. */
2009 putpkt ("?"); /* Initiate a query from remote machine. */
2012 start_remote (from_tty
); /* Initialize gdb process mechanisms. */
2015 /* Open a connection to a remote debugger.
2016 NAME is the filename used for communication. */
2019 remote_open (char *name
, int from_tty
)
2021 remote_open_1 (name
, from_tty
, &remote_ops
, 0, 0);
2024 /* Just like remote_open, but with asynchronous support. */
2026 remote_async_open (char *name
, int from_tty
)
2028 remote_open_1 (name
, from_tty
, &remote_async_ops
, 0, 1);
2031 /* Open a connection to a remote debugger using the extended
2032 remote gdb protocol. NAME is the filename used for communication. */
2035 extended_remote_open (char *name
, int from_tty
)
2037 remote_open_1 (name
, from_tty
, &extended_remote_ops
, 1 /*extended_p */,
2041 /* Just like extended_remote_open, but with asynchronous support. */
2043 extended_remote_async_open (char *name
, int from_tty
)
2045 remote_open_1 (name
, from_tty
, &extended_async_remote_ops
,
2046 1 /*extended_p */, 1 /* async_p */);
2049 /* Generic code for opening a connection to a remote target. */
2052 init_all_packet_configs (void)
2055 for (i
= 0; i
< PACKET_MAX
; i
++)
2056 update_packet_config (&remote_protocol_packets
[i
]);
2059 /* Symbol look-up. */
2062 remote_check_symbols (struct objfile
*objfile
)
2064 struct remote_state
*rs
= get_remote_state ();
2065 char *msg
, *reply
, *tmp
;
2066 struct minimal_symbol
*sym
;
2069 if (remote_protocol_packets
[PACKET_qSymbol
].support
== PACKET_DISABLE
)
2072 /* Allocate a message buffer. We can't reuse the input buffer in RS,
2073 because we need both at the same time. */
2074 msg
= alloca (get_remote_packet_size ());
2076 /* Invite target to request symbol lookups. */
2078 putpkt ("qSymbol::");
2079 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2080 packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_qSymbol
]);
2083 while (strncmp (reply
, "qSymbol:", 8) == 0)
2086 end
= hex2bin (tmp
, (gdb_byte
*) msg
, strlen (tmp
) / 2);
2088 sym
= lookup_minimal_symbol (msg
, NULL
, NULL
);
2090 xsnprintf (msg
, get_remote_packet_size (), "qSymbol::%s", &reply
[8]);
2092 xsnprintf (msg
, get_remote_packet_size (), "qSymbol:%s:%s",
2093 paddr_nz (SYMBOL_VALUE_ADDRESS (sym
)),
2096 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2101 static struct serial
*
2102 remote_serial_open (char *name
)
2104 static int udp_warning
= 0;
2106 /* FIXME: Parsing NAME here is a hack. But we want to warn here instead
2107 of in ser-tcp.c, because it is the remote protocol assuming that the
2108 serial connection is reliable and not the serial connection promising
2110 if (!udp_warning
&& strncmp (name
, "udp:", 4) == 0)
2113 The remote protocol may be unreliable over UDP.\n\
2114 Some events may be lost, rendering further debugging impossible."));
2118 return serial_open (name
);
2121 /* This type describes each known response to the qSupported
2123 struct protocol_feature
2125 /* The name of this protocol feature. */
2128 /* The default for this protocol feature. */
2129 enum packet_support default_support
;
2131 /* The function to call when this feature is reported, or after
2132 qSupported processing if the feature is not supported.
2133 The first argument points to this structure. The second
2134 argument indicates whether the packet requested support be
2135 enabled, disabled, or probed (or the default, if this function
2136 is being called at the end of processing and this feature was
2137 not reported). The third argument may be NULL; if not NULL, it
2138 is a NUL-terminated string taken from the packet following
2139 this feature's name and an equals sign. */
2140 void (*func
) (const struct protocol_feature
*, enum packet_support
,
2143 /* The corresponding packet for this feature. Only used if
2144 FUNC is remote_supported_packet. */
2149 remote_supported_packet (const struct protocol_feature
*feature
,
2150 enum packet_support support
,
2151 const char *argument
)
2155 warning (_("Remote qSupported response supplied an unexpected value for"
2156 " \"%s\"."), feature
->name
);
2160 if (remote_protocol_packets
[feature
->packet
].support
2161 == PACKET_SUPPORT_UNKNOWN
)
2162 remote_protocol_packets
[feature
->packet
].support
= support
;
2166 remote_packet_size (const struct protocol_feature
*feature
,
2167 enum packet_support support
, const char *value
)
2169 struct remote_state
*rs
= get_remote_state ();
2174 if (support
!= PACKET_ENABLE
)
2177 if (value
== NULL
|| *value
== '\0')
2179 warning (_("Remote target reported \"%s\" without a size."),
2185 packet_size
= strtol (value
, &value_end
, 16);
2186 if (errno
!= 0 || *value_end
!= '\0' || packet_size
< 0)
2188 warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."),
2189 feature
->name
, value
);
2193 if (packet_size
> MAX_REMOTE_PACKET_SIZE
)
2195 warning (_("limiting remote suggested packet size (%d bytes) to %d"),
2196 packet_size
, MAX_REMOTE_PACKET_SIZE
);
2197 packet_size
= MAX_REMOTE_PACKET_SIZE
;
2200 /* Record the new maximum packet size. */
2201 rs
->explicit_packet_size
= packet_size
;
2204 static struct protocol_feature remote_protocol_features
[] = {
2205 { "PacketSize", PACKET_DISABLE
, remote_packet_size
, -1 },
2206 { "qXfer:auxv:read", PACKET_DISABLE
, remote_supported_packet
,
2207 PACKET_qXfer_auxv
},
2208 { "qXfer:memory-map:read", PACKET_DISABLE
, remote_supported_packet
,
2209 PACKET_qXfer_memory_map
}
2213 remote_query_supported (void)
2215 struct remote_state
*rs
= get_remote_state ();
2218 unsigned char seen
[ARRAY_SIZE (remote_protocol_features
)];
2220 /* The packet support flags are handled differently for this packet
2221 than for most others. We treat an error, a disabled packet, and
2222 an empty response identically: any features which must be reported
2223 to be used will be automatically disabled. An empty buffer
2224 accomplishes this, since that is also the representation for a list
2225 containing no features. */
2228 if (remote_protocol_packets
[PACKET_qSupported
].support
!= PACKET_DISABLE
)
2230 putpkt ("qSupported");
2231 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2233 /* If an error occured, warn, but do not return - just reset the
2234 buffer to empty and go on to disable features. */
2235 if (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_qSupported
])
2238 warning (_("Remote failure reply: %s"), rs
->buf
);
2243 memset (seen
, 0, sizeof (seen
));
2248 enum packet_support is_supported
;
2249 char *p
, *end
, *name_end
, *value
;
2251 /* First separate out this item from the rest of the packet. If
2252 there's another item after this, we overwrite the separator
2253 (terminated strings are much easier to work with). */
2255 end
= strchr (p
, ';');
2258 end
= p
+ strlen (p
);
2265 warning (_("empty item in \"qSupported\" response"));
2273 name_end
= strchr (p
, '=');
2276 /* This is a name=value entry. */
2277 is_supported
= PACKET_ENABLE
;
2278 value
= name_end
+ 1;
2287 is_supported
= PACKET_ENABLE
;
2291 is_supported
= PACKET_DISABLE
;
2295 is_supported
= PACKET_SUPPORT_UNKNOWN
;
2299 warning (_("unrecognized item \"%s\" in \"qSupported\" response"), p
);
2305 for (i
= 0; i
< ARRAY_SIZE (remote_protocol_features
); i
++)
2306 if (strcmp (remote_protocol_features
[i
].name
, p
) == 0)
2308 const struct protocol_feature
*feature
;
2311 feature
= &remote_protocol_features
[i
];
2312 feature
->func (feature
, is_supported
, value
);
2317 /* If we increased the packet size, make sure to increase the global
2318 buffer size also. We delay this until after parsing the entire
2319 qSupported packet, because this is the same buffer we were
2321 if (rs
->buf_size
< rs
->explicit_packet_size
)
2323 rs
->buf_size
= rs
->explicit_packet_size
;
2324 rs
->buf
= xrealloc (rs
->buf
, rs
->buf_size
);
2327 /* Handle the defaults for unmentioned features. */
2328 for (i
= 0; i
< ARRAY_SIZE (remote_protocol_features
); i
++)
2331 const struct protocol_feature
*feature
;
2333 feature
= &remote_protocol_features
[i
];
2334 feature
->func (feature
, feature
->default_support
, NULL
);
2340 remote_open_1 (char *name
, int from_tty
, struct target_ops
*target
,
2341 int extended_p
, int async_p
)
2343 struct remote_state
*rs
= get_remote_state ();
2345 error (_("To open a remote debug connection, you need to specify what\n"
2346 "serial device is attached to the remote system\n"
2347 "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."));
2349 /* See FIXME above. */
2351 wait_forever_enabled_p
= 1;
2353 target_preopen (from_tty
);
2355 unpush_target (target
);
2357 remote_fileio_reset ();
2358 reopen_exec_file ();
2361 remote_desc
= remote_serial_open (name
);
2363 perror_with_name (name
);
2365 if (baud_rate
!= -1)
2367 if (serial_setbaudrate (remote_desc
, baud_rate
))
2369 /* The requested speed could not be set. Error out to
2370 top level after closing remote_desc. Take care to
2371 set remote_desc to NULL to avoid closing remote_desc
2373 serial_close (remote_desc
);
2375 perror_with_name (name
);
2379 serial_raw (remote_desc
);
2381 /* If there is something sitting in the buffer we might take it as a
2382 response to a command, which would be bad. */
2383 serial_flush_input (remote_desc
);
2387 puts_filtered ("Remote debugging using ");
2388 puts_filtered (name
);
2389 puts_filtered ("\n");
2391 push_target (target
); /* Switch to using remote target now. */
2393 /* Reset the target state; these things will be queried either by
2394 remote_query_supported or as they are needed. */
2395 init_all_packet_configs ();
2396 rs
->explicit_packet_size
= 0;
2398 general_thread
= -2;
2399 continue_thread
= -2;
2401 /* Probe for ability to use "ThreadInfo" query, as required. */
2402 use_threadinfo_query
= 1;
2403 use_threadextra_query
= 1;
2405 /* The first packet we send to the target is the optional "supported
2406 packets" request. If the target can answer this, it will tell us
2407 which later probes to skip. */
2408 remote_query_supported ();
2410 /* Without this, some commands which require an active target (such
2411 as kill) won't work. This variable serves (at least) double duty
2412 as both the pid of the target process (if it has such), and as a
2413 flag indicating that a target is active. These functions should
2414 be split out into seperate variables, especially since GDB will
2415 someday have a notion of debugging several processes. */
2417 inferior_ptid
= pid_to_ptid (MAGIC_NULL_PID
);
2421 /* With this target we start out by owning the terminal. */
2422 remote_async_terminal_ours_p
= 1;
2424 /* FIXME: cagney/1999-09-23: During the initial connection it is
2425 assumed that the target is already ready and able to respond to
2426 requests. Unfortunately remote_start_remote() eventually calls
2427 wait_for_inferior() with no timeout. wait_forever_enabled_p gets
2428 around this. Eventually a mechanism that allows
2429 wait_for_inferior() to expect/get timeouts will be
2431 wait_forever_enabled_p
= 0;
2434 /* First delete any symbols previously loaded from shared libraries. */
2435 no_shared_libraries (NULL
, 0);
2437 /* Start the remote connection. If error() or QUIT, discard this
2438 target (we'd otherwise be in an inconsistent state) and then
2439 propogate the error on up the exception chain. This ensures that
2440 the caller doesn't stumble along blindly assuming that the
2441 function succeeded. The CLI doesn't have this problem but other
2442 UI's, such as MI do.
2444 FIXME: cagney/2002-05-19: Instead of re-throwing the exception,
2445 this function should return an error indication letting the
2446 caller restore the previous state. Unfortunately the command
2447 ``target remote'' is directly wired to this function making that
2448 impossible. On a positive note, the CLI side of this problem has
2449 been fixed - the function set_cmd_context() makes it possible for
2450 all the ``target ....'' commands to share a common callback
2451 function. See cli-dump.c. */
2453 struct gdb_exception ex
2454 = catch_exception (uiout
, remote_start_remote
, &from_tty
,
2460 wait_forever_enabled_p
= 1;
2461 throw_exception (ex
);
2466 wait_forever_enabled_p
= 1;
2470 /* Tell the remote that we are using the extended protocol. */
2472 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2475 if (exec_bfd
) /* No use without an exec file. */
2476 remote_check_symbols (symfile_objfile
);
2479 /* This takes a program previously attached to and detaches it. After
2480 this is done, GDB can be used to debug some other program. We
2481 better not have left any breakpoints in the target program or it'll
2482 die when it hits one. */
2485 remote_detach (char *args
, int from_tty
)
2487 struct remote_state
*rs
= get_remote_state ();
2490 error (_("Argument given to \"detach\" when remotely debugging."));
2492 /* Tell the remote target to detach. */
2493 strcpy (rs
->buf
, "D");
2494 remote_send (&rs
->buf
, &rs
->buf_size
);
2496 /* Unregister the file descriptor from the event loop. */
2497 if (target_is_async_p ())
2498 serial_async (remote_desc
, NULL
, 0);
2500 target_mourn_inferior ();
2502 puts_filtered ("Ending remote debugging.\n");
2505 /* Same as remote_detach, but don't send the "D" packet; just disconnect. */
2508 remote_disconnect (struct target_ops
*target
, char *args
, int from_tty
)
2511 error (_("Argument given to \"detach\" when remotely debugging."));
2513 /* Unregister the file descriptor from the event loop. */
2514 if (target_is_async_p ())
2515 serial_async (remote_desc
, NULL
, 0);
2517 target_mourn_inferior ();
2519 puts_filtered ("Ending remote debugging.\n");
2522 /* Convert hex digit A to a number. */
2527 if (a
>= '0' && a
<= '9')
2529 else if (a
>= 'a' && a
<= 'f')
2530 return a
- 'a' + 10;
2531 else if (a
>= 'A' && a
<= 'F')
2532 return a
- 'A' + 10;
2534 error (_("Reply contains invalid hex digit %d"), a
);
2538 hex2bin (const char *hex
, gdb_byte
*bin
, int count
)
2542 for (i
= 0; i
< count
; i
++)
2544 if (hex
[0] == 0 || hex
[1] == 0)
2546 /* Hex string is short, or of uneven length.
2547 Return the count that has been converted so far. */
2550 *bin
++ = fromhex (hex
[0]) * 16 + fromhex (hex
[1]);
2556 /* Convert number NIB to a hex digit. */
2564 return 'a' + nib
- 10;
2568 bin2hex (const gdb_byte
*bin
, char *hex
, int count
)
2571 /* May use a length, or a nul-terminated string as input. */
2573 count
= strlen ((char *) bin
);
2575 for (i
= 0; i
< count
; i
++)
2577 *hex
++ = tohex ((*bin
>> 4) & 0xf);
2578 *hex
++ = tohex (*bin
++ & 0xf);
2584 /* Check for the availability of vCont. This function should also check
2588 remote_vcont_probe (struct remote_state
*rs
)
2592 strcpy (rs
->buf
, "vCont?");
2594 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2597 /* Make sure that the features we assume are supported. */
2598 if (strncmp (buf
, "vCont", 5) == 0)
2601 int support_s
, support_S
, support_c
, support_C
;
2607 while (p
&& *p
== ';')
2610 if (*p
== 's' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
2612 else if (*p
== 'S' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
2614 else if (*p
== 'c' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
2616 else if (*p
== 'C' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
2619 p
= strchr (p
, ';');
2622 /* If s, S, c, and C are not all supported, we can't use vCont. Clearing
2623 BUF will make packet_ok disable the packet. */
2624 if (!support_s
|| !support_S
|| !support_c
|| !support_C
)
2628 packet_ok (buf
, &remote_protocol_packets
[PACKET_vCont
]);
2631 /* Resume the remote inferior by using a "vCont" packet. The thread
2632 to be resumed is PTID; STEP and SIGGNAL indicate whether the
2633 resumed thread should be single-stepped and/or signalled. If PTID's
2634 PID is -1, then all threads are resumed; the thread to be stepped and/or
2635 signalled is given in the global INFERIOR_PTID. This function returns
2636 non-zero iff it resumes the inferior.
2638 This function issues a strict subset of all possible vCont commands at the
2642 remote_vcont_resume (ptid_t ptid
, int step
, enum target_signal siggnal
)
2644 struct remote_state
*rs
= get_remote_state ();
2645 int pid
= PIDGET (ptid
);
2646 char *buf
= NULL
, *outbuf
;
2647 struct cleanup
*old_cleanup
;
2649 if (remote_protocol_packets
[PACKET_vCont
].support
== PACKET_SUPPORT_UNKNOWN
)
2650 remote_vcont_probe (rs
);
2652 if (remote_protocol_packets
[PACKET_vCont
].support
== PACKET_DISABLE
)
2655 /* If we could generate a wider range of packets, we'd have to worry
2656 about overflowing BUF. Should there be a generic
2657 "multi-part-packet" packet? */
2659 if (PIDGET (inferior_ptid
) == MAGIC_NULL_PID
)
2661 /* MAGIC_NULL_PTID means that we don't have any active threads, so we
2662 don't have any PID numbers the inferior will understand. Make sure
2663 to only send forms that do not specify a PID. */
2664 if (step
&& siggnal
!= TARGET_SIGNAL_0
)
2665 outbuf
= xstrprintf ("vCont;S%02x", siggnal
);
2667 outbuf
= xstrprintf ("vCont;s");
2668 else if (siggnal
!= TARGET_SIGNAL_0
)
2669 outbuf
= xstrprintf ("vCont;C%02x", siggnal
);
2671 outbuf
= xstrprintf ("vCont;c");
2675 /* Resume all threads, with preference for INFERIOR_PTID. */
2676 if (step
&& siggnal
!= TARGET_SIGNAL_0
)
2677 outbuf
= xstrprintf ("vCont;S%02x:%x;c", siggnal
,
2678 PIDGET (inferior_ptid
));
2680 outbuf
= xstrprintf ("vCont;s:%x;c", PIDGET (inferior_ptid
));
2681 else if (siggnal
!= TARGET_SIGNAL_0
)
2682 outbuf
= xstrprintf ("vCont;C%02x:%x;c", siggnal
,
2683 PIDGET (inferior_ptid
));
2685 outbuf
= xstrprintf ("vCont;c");
2689 /* Scheduler locking; resume only PTID. */
2690 if (step
&& siggnal
!= TARGET_SIGNAL_0
)
2691 outbuf
= xstrprintf ("vCont;S%02x:%x", siggnal
, pid
);
2693 outbuf
= xstrprintf ("vCont;s:%x", pid
);
2694 else if (siggnal
!= TARGET_SIGNAL_0
)
2695 outbuf
= xstrprintf ("vCont;C%02x:%x", siggnal
, pid
);
2697 outbuf
= xstrprintf ("vCont;c:%x", pid
);
2700 gdb_assert (outbuf
&& strlen (outbuf
) < get_remote_packet_size ());
2701 old_cleanup
= make_cleanup (xfree
, outbuf
);
2705 do_cleanups (old_cleanup
);
2710 /* Tell the remote machine to resume. */
2712 static enum target_signal last_sent_signal
= TARGET_SIGNAL_0
;
2714 static int last_sent_step
;
2717 remote_resume (ptid_t ptid
, int step
, enum target_signal siggnal
)
2719 struct remote_state
*rs
= get_remote_state ();
2721 int pid
= PIDGET (ptid
);
2723 last_sent_signal
= siggnal
;
2724 last_sent_step
= step
;
2726 /* A hook for when we need to do something at the last moment before
2728 if (deprecated_target_resume_hook
)
2729 (*deprecated_target_resume_hook
) ();
2731 /* The vCont packet doesn't need to specify threads via Hc. */
2732 if (remote_vcont_resume (ptid
, step
, siggnal
))
2735 /* All other supported resume packets do use Hc, so call set_thread. */
2737 set_thread (0, 0); /* Run any thread. */
2739 set_thread (pid
, 0); /* Run this thread. */
2742 if (siggnal
!= TARGET_SIGNAL_0
)
2744 buf
[0] = step
? 'S' : 'C';
2745 buf
[1] = tohex (((int) siggnal
>> 4) & 0xf);
2746 buf
[2] = tohex (((int) siggnal
) & 0xf);
2750 strcpy (buf
, step
? "s" : "c");
2755 /* Same as remote_resume, but with async support. */
2757 remote_async_resume (ptid_t ptid
, int step
, enum target_signal siggnal
)
2759 remote_resume (ptid
, step
, siggnal
);
2761 /* We are about to start executing the inferior, let's register it
2762 with the event loop. NOTE: this is the one place where all the
2763 execution commands end up. We could alternatively do this in each
2764 of the execution commands in infcmd.c. */
2765 /* FIXME: ezannoni 1999-09-28: We may need to move this out of here
2766 into infcmd.c in order to allow inferior function calls to work
2767 NOT asynchronously. */
2768 if (target_can_async_p ())
2769 target_async (inferior_event_handler
, 0);
2770 /* Tell the world that the target is now executing. */
2771 /* FIXME: cagney/1999-09-23: Is it the targets responsibility to set
2772 this? Instead, should the client of target just assume (for
2773 async targets) that the target is going to start executing? Is
2774 this information already found in the continuation block? */
2775 if (target_is_async_p ())
2776 target_executing
= 1;
2780 /* Set up the signal handler for SIGINT, while the target is
2781 executing, ovewriting the 'regular' SIGINT signal handler. */
2783 initialize_sigint_signal_handler (void)
2785 sigint_remote_token
=
2786 create_async_signal_handler (async_remote_interrupt
, NULL
);
2787 signal (SIGINT
, handle_remote_sigint
);
2790 /* Signal handler for SIGINT, while the target is executing. */
2792 handle_remote_sigint (int sig
)
2794 signal (sig
, handle_remote_sigint_twice
);
2795 sigint_remote_twice_token
=
2796 create_async_signal_handler (async_remote_interrupt_twice
, NULL
);
2797 mark_async_signal_handler_wrapper (sigint_remote_token
);
2800 /* Signal handler for SIGINT, installed after SIGINT has already been
2801 sent once. It will take effect the second time that the user sends
2804 handle_remote_sigint_twice (int sig
)
2806 signal (sig
, handle_sigint
);
2807 sigint_remote_twice_token
=
2808 create_async_signal_handler (inferior_event_handler_wrapper
, NULL
);
2809 mark_async_signal_handler_wrapper (sigint_remote_twice_token
);
2812 /* Perform the real interruption of the target execution, in response
2815 async_remote_interrupt (gdb_client_data arg
)
2818 fprintf_unfiltered (gdb_stdlog
, "remote_interrupt called\n");
2823 /* Perform interrupt, if the first attempt did not succeed. Just give
2824 up on the target alltogether. */
2826 async_remote_interrupt_twice (gdb_client_data arg
)
2829 fprintf_unfiltered (gdb_stdlog
, "remote_interrupt_twice called\n");
2830 /* Do something only if the target was not killed by the previous
2832 if (target_executing
)
2835 signal (SIGINT
, handle_remote_sigint
);
2839 /* Reinstall the usual SIGINT handlers, after the target has
2842 cleanup_sigint_signal_handler (void *dummy
)
2844 signal (SIGINT
, handle_sigint
);
2845 if (sigint_remote_twice_token
)
2846 delete_async_signal_handler ((struct async_signal_handler
**)
2847 &sigint_remote_twice_token
);
2848 if (sigint_remote_token
)
2849 delete_async_signal_handler ((struct async_signal_handler
**)
2850 &sigint_remote_token
);
2853 /* Send ^C to target to halt it. Target will respond, and send us a
2855 static void (*ofunc
) (int);
2857 /* The command line interface's stop routine. This function is installed
2858 as a signal handler for SIGINT. The first time a user requests a
2859 stop, we call remote_stop to send a break or ^C. If there is no
2860 response from the target (it didn't stop when the user requested it),
2861 we ask the user if he'd like to detach from the target. */
2863 remote_interrupt (int signo
)
2865 /* If this doesn't work, try more severe steps. */
2866 signal (signo
, remote_interrupt_twice
);
2869 fprintf_unfiltered (gdb_stdlog
, "remote_interrupt called\n");
2874 /* The user typed ^C twice. */
2877 remote_interrupt_twice (int signo
)
2879 signal (signo
, ofunc
);
2881 signal (signo
, remote_interrupt
);
2884 /* This is the generic stop called via the target vector. When a target
2885 interrupt is requested, either by the command line or the GUI, we
2886 will eventually end up here. */
2890 /* Send a break or a ^C, depending on user preference. */
2892 fprintf_unfiltered (gdb_stdlog
, "remote_stop called\n");
2895 serial_send_break (remote_desc
);
2897 serial_write (remote_desc
, "\003", 1);
2900 /* Ask the user what to do when an interrupt is received. */
2903 interrupt_query (void)
2905 target_terminal_ours ();
2907 if (query ("Interrupted while waiting for the program.\n\
2908 Give up (and stop debugging it)? "))
2910 target_mourn_inferior ();
2911 deprecated_throw_reason (RETURN_QUIT
);
2914 target_terminal_inferior ();
2917 /* Enable/disable target terminal ownership. Most targets can use
2918 terminal groups to control terminal ownership. Remote targets are
2919 different in that explicit transfer of ownership to/from GDB/target
2923 remote_async_terminal_inferior (void)
2925 /* FIXME: cagney/1999-09-27: Shouldn't need to test for
2926 sync_execution here. This function should only be called when
2927 GDB is resuming the inferior in the forground. A background
2928 resume (``run&'') should leave GDB in control of the terminal and
2929 consequently should not call this code. */
2930 if (!sync_execution
)
2932 /* FIXME: cagney/1999-09-27: Closely related to the above. Make
2933 calls target_terminal_*() idenpotent. The event-loop GDB talking
2934 to an asynchronous target with a synchronous command calls this
2935 function from both event-top.c and infrun.c/infcmd.c. Once GDB
2936 stops trying to transfer the terminal to the target when it
2937 shouldn't this guard can go away. */
2938 if (!remote_async_terminal_ours_p
)
2940 delete_file_handler (input_fd
);
2941 remote_async_terminal_ours_p
= 0;
2942 initialize_sigint_signal_handler ();
2943 /* NOTE: At this point we could also register our selves as the
2944 recipient of all input. Any characters typed could then be
2945 passed on down to the target. */
2949 remote_async_terminal_ours (void)
2951 /* See FIXME in remote_async_terminal_inferior. */
2952 if (!sync_execution
)
2954 /* See FIXME in remote_async_terminal_inferior. */
2955 if (remote_async_terminal_ours_p
)
2957 cleanup_sigint_signal_handler (NULL
);
2958 add_file_handler (input_fd
, stdin_event_handler
, 0);
2959 remote_async_terminal_ours_p
= 1;
2962 /* If nonzero, ignore the next kill. */
2967 remote_console_output (char *msg
)
2971 for (p
= msg
; p
[0] && p
[1]; p
+= 2)
2974 char c
= fromhex (p
[0]) * 16 + fromhex (p
[1]);
2977 fputs_unfiltered (tb
, gdb_stdtarg
);
2979 gdb_flush (gdb_stdtarg
);
2982 /* Wait until the remote machine stops, then return,
2983 storing status in STATUS just as `wait' would.
2984 Returns "pid", which in the case of a multi-threaded
2985 remote OS, is the thread-id. */
2988 remote_wait (ptid_t ptid
, struct target_waitstatus
*status
)
2990 struct remote_state
*rs
= get_remote_state ();
2991 struct remote_arch_state
*rsa
= get_remote_arch_state ();
2992 ULONGEST thread_num
= -1;
2995 status
->kind
= TARGET_WAITKIND_EXITED
;
2996 status
->value
.integer
= 0;
3002 ofunc
= signal (SIGINT
, remote_interrupt
);
3003 getpkt (&rs
->buf
, &rs
->buf_size
, 1);
3004 signal (SIGINT
, ofunc
);
3008 /* This is a hook for when we need to do something (perhaps the
3009 collection of trace data) every time the target stops. */
3010 if (deprecated_target_wait_loop_hook
)
3011 (*deprecated_target_wait_loop_hook
) ();
3013 remote_stopped_by_watchpoint_p
= 0;
3017 case 'E': /* Error of some sort. */
3018 warning (_("Remote failure reply: %s"), buf
);
3020 case 'F': /* File-I/O request. */
3021 remote_fileio_request (buf
);
3023 case 'T': /* Status with PC, SP, FP, ... */
3025 gdb_byte regs
[MAX_REGISTER_SIZE
];
3027 /* Expedited reply, containing Signal, {regno, reg} repeat. */
3028 /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where
3030 n... = register number
3031 r... = register contents
3033 p
= &buf
[3]; /* after Txx */
3042 /* If the packet contains a register number save it in
3043 pnum and set p1 to point to the character following
3044 it. Otherwise p1 points to p. */
3046 /* If this packet is an awatch packet, don't parse the
3047 'a' as a register number. */
3049 if (strncmp (p
, "awatch", strlen("awatch")) != 0)
3051 /* Read the ``P'' register number. */
3052 pnum
= strtol (p
, &p_temp
, 16);
3058 if (p1
== p
) /* No register number present here. */
3060 p1
= strchr (p
, ':');
3062 error (_("Malformed packet(a) (missing colon): %s\n\
3065 if (strncmp (p
, "thread", p1
- p
) == 0)
3067 p_temp
= unpack_varlen_hex (++p1
, &thread_num
);
3068 record_currthread (thread_num
);
3071 else if ((strncmp (p
, "watch", p1
- p
) == 0)
3072 || (strncmp (p
, "rwatch", p1
- p
) == 0)
3073 || (strncmp (p
, "awatch", p1
- p
) == 0))
3075 remote_stopped_by_watchpoint_p
= 1;
3076 p
= unpack_varlen_hex (++p1
, &addr
);
3077 remote_watch_data_address
= (CORE_ADDR
)addr
;
3081 /* Silently skip unknown optional info. */
3082 p_temp
= strchr (p1
+ 1, ';');
3089 struct packet_reg
*reg
= packet_reg_from_pnum (rsa
, pnum
);
3093 error (_("Malformed packet(b) (missing colon): %s\n\
3098 error (_("Remote sent bad register number %s: %s\n\
3100 phex_nz (pnum
, 0), p
, buf
);
3102 fieldsize
= hex2bin (p
, regs
,
3103 register_size (current_gdbarch
,
3106 if (fieldsize
< register_size (current_gdbarch
,
3108 warning (_("Remote reply is too short: %s"), buf
);
3109 regcache_raw_supply (current_regcache
,
3114 error (_("Remote register badly formatted: %s\nhere: %s"),
3119 case 'S': /* Old style status, just signal only. */
3120 status
->kind
= TARGET_WAITKIND_STOPPED
;
3121 status
->value
.sig
= (enum target_signal
)
3122 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
3126 thread_num
= strtol ((const char *) &buf
[4], NULL
, 16);
3127 record_currthread (thread_num
);
3130 case 'W': /* Target exited. */
3132 /* The remote process exited. */
3133 status
->kind
= TARGET_WAITKIND_EXITED
;
3134 status
->value
.integer
= (fromhex (buf
[1]) << 4) + fromhex (buf
[2]);
3138 status
->kind
= TARGET_WAITKIND_SIGNALLED
;
3139 status
->value
.sig
= (enum target_signal
)
3140 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
3144 case 'O': /* Console output. */
3145 remote_console_output (buf
+ 1);
3148 if (last_sent_signal
!= TARGET_SIGNAL_0
)
3150 /* Zero length reply means that we tried 'S' or 'C' and
3151 the remote system doesn't support it. */
3152 target_terminal_ours_for_output ();
3154 ("Can't send signals to this remote system. %s not sent.\n",
3155 target_signal_to_name (last_sent_signal
));
3156 last_sent_signal
= TARGET_SIGNAL_0
;
3157 target_terminal_inferior ();
3159 strcpy ((char *) buf
, last_sent_step
? "s" : "c");
3160 putpkt ((char *) buf
);
3163 /* else fallthrough */
3165 warning (_("Invalid remote reply: %s"), buf
);
3170 if (thread_num
!= -1)
3172 return pid_to_ptid (thread_num
);
3174 return inferior_ptid
;
3177 /* Async version of remote_wait. */
3179 remote_async_wait (ptid_t ptid
, struct target_waitstatus
*status
)
3181 struct remote_state
*rs
= get_remote_state ();
3182 struct remote_arch_state
*rsa
= get_remote_arch_state ();
3183 ULONGEST thread_num
= -1;
3186 status
->kind
= TARGET_WAITKIND_EXITED
;
3187 status
->value
.integer
= 0;
3189 remote_stopped_by_watchpoint_p
= 0;
3195 if (!target_is_async_p ())
3196 ofunc
= signal (SIGINT
, remote_interrupt
);
3197 /* FIXME: cagney/1999-09-27: If we're in async mode we should
3198 _never_ wait for ever -> test on target_is_async_p().
3199 However, before we do that we need to ensure that the caller
3200 knows how to take the target into/out of async mode. */
3201 getpkt (&rs
->buf
, &rs
->buf_size
, wait_forever_enabled_p
);
3202 if (!target_is_async_p ())
3203 signal (SIGINT
, ofunc
);
3207 /* This is a hook for when we need to do something (perhaps the
3208 collection of trace data) every time the target stops. */
3209 if (deprecated_target_wait_loop_hook
)
3210 (*deprecated_target_wait_loop_hook
) ();
3214 case 'E': /* Error of some sort. */
3215 warning (_("Remote failure reply: %s"), buf
);
3217 case 'F': /* File-I/O request. */
3218 remote_fileio_request (buf
);
3220 case 'T': /* Status with PC, SP, FP, ... */
3222 gdb_byte regs
[MAX_REGISTER_SIZE
];
3224 /* Expedited reply, containing Signal, {regno, reg} repeat. */
3225 /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where
3227 n... = register number
3228 r... = register contents
3230 p
= &buf
[3]; /* after Txx */
3239 /* If the packet contains a register number, save it
3240 in pnum and set p1 to point to the character
3241 following it. Otherwise p1 points to p. */
3243 /* If this packet is an awatch packet, don't parse the 'a'
3244 as a register number. */
3246 if (!strncmp (p
, "awatch", strlen ("awatch")) != 0)
3248 /* Read the register number. */
3249 pnum
= strtol (p
, &p_temp
, 16);
3255 if (p1
== p
) /* No register number present here. */
3257 p1
= strchr (p
, ':');
3259 error (_("Malformed packet(a) (missing colon): %s\n\
3262 if (strncmp (p
, "thread", p1
- p
) == 0)
3264 p_temp
= unpack_varlen_hex (++p1
, &thread_num
);
3265 record_currthread (thread_num
);
3268 else if ((strncmp (p
, "watch", p1
- p
) == 0)
3269 || (strncmp (p
, "rwatch", p1
- p
) == 0)
3270 || (strncmp (p
, "awatch", p1
- p
) == 0))
3272 remote_stopped_by_watchpoint_p
= 1;
3273 p
= unpack_varlen_hex (++p1
, &addr
);
3274 remote_watch_data_address
= (CORE_ADDR
)addr
;
3278 /* Silently skip unknown optional info. */
3279 p_temp
= strchr (p1
+ 1, ';');
3287 struct packet_reg
*reg
= packet_reg_from_pnum (rsa
, pnum
);
3290 error (_("Malformed packet(b) (missing colon): %s\n\
3295 error (_("Remote sent bad register number %ld: %s\n\
3299 fieldsize
= hex2bin (p
, regs
,
3300 register_size (current_gdbarch
,
3303 if (fieldsize
< register_size (current_gdbarch
,
3305 warning (_("Remote reply is too short: %s"), buf
);
3306 regcache_raw_supply (current_regcache
, reg
->regnum
, regs
);
3310 error (_("Remote register badly formatted: %s\nhere: %s"),
3315 case 'S': /* Old style status, just signal only. */
3316 status
->kind
= TARGET_WAITKIND_STOPPED
;
3317 status
->value
.sig
= (enum target_signal
)
3318 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
3322 thread_num
= strtol ((const char *) &buf
[4], NULL
, 16);
3323 record_currthread (thread_num
);
3326 case 'W': /* Target exited. */
3328 /* The remote process exited. */
3329 status
->kind
= TARGET_WAITKIND_EXITED
;
3330 status
->value
.integer
= (fromhex (buf
[1]) << 4) + fromhex (buf
[2]);
3334 status
->kind
= TARGET_WAITKIND_SIGNALLED
;
3335 status
->value
.sig
= (enum target_signal
)
3336 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
3340 case 'O': /* Console output. */
3341 remote_console_output (buf
+ 1);
3342 /* Return immediately to the event loop. The event loop will
3343 still be waiting on the inferior afterwards. */
3344 status
->kind
= TARGET_WAITKIND_IGNORE
;
3347 if (last_sent_signal
!= TARGET_SIGNAL_0
)
3349 /* Zero length reply means that we tried 'S' or 'C' and
3350 the remote system doesn't support it. */
3351 target_terminal_ours_for_output ();
3353 ("Can't send signals to this remote system. %s not sent.\n",
3354 target_signal_to_name (last_sent_signal
));
3355 last_sent_signal
= TARGET_SIGNAL_0
;
3356 target_terminal_inferior ();
3358 strcpy ((char *) buf
, last_sent_step
? "s" : "c");
3359 putpkt ((char *) buf
);
3362 /* else fallthrough */
3364 warning (_("Invalid remote reply: %s"), buf
);
3369 if (thread_num
!= -1)
3371 return pid_to_ptid (thread_num
);
3373 return inferior_ptid
;
3376 /* Number of bytes of registers this stub implements. */
3378 static int register_bytes_found
;
3380 /* Read the remote registers into the block REGS. */
3381 /* Currently we just read all the registers, so we don't use regnum. */
3384 fetch_register_using_p (int regnum
)
3386 struct remote_state
*rs
= get_remote_state ();
3388 char regp
[MAX_REGISTER_SIZE
];
3393 p
+= hexnumstr (p
, regnum
);
3395 remote_send (&rs
->buf
, &rs
->buf_size
);
3399 /* If the stub didn't recognize the packet, or if we got an error,
3401 if (buf
[0] == '\0' || buf
[0] == 'E')
3404 /* If this register is unfetchable, tell the regcache. */
3407 regcache_raw_supply (current_regcache
, regnum
, NULL
);
3408 set_register_cached (regnum
, -1);
3412 /* Otherwise, parse and supply the value. */
3419 error (_("fetch_register_using_p: early buf termination"));
3423 regp
[i
++] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
3426 regcache_raw_supply (current_regcache
, regnum
, regp
);
3431 remote_fetch_registers (int regnum
)
3433 struct remote_state
*rs
= get_remote_state ();
3434 struct remote_arch_state
*rsa
= get_remote_arch_state ();
3438 char *regs
= alloca (rsa
->sizeof_g_packet
);
3440 set_thread (PIDGET (inferior_ptid
), 1);
3444 struct packet_reg
*reg
= packet_reg_from_regnum (rsa
, regnum
);
3445 gdb_assert (reg
!= NULL
);
3446 if (!reg
->in_g_packet
)
3447 internal_error (__FILE__
, __LINE__
,
3448 _("Attempt to fetch a non G-packet register when this "
3449 "remote.c does not support the p-packet."));
3451 switch (remote_protocol_packets
[PACKET_p
].support
)
3453 case PACKET_DISABLE
:
3456 if (fetch_register_using_p (regnum
))
3459 error (_("Protocol error: p packet not recognized by stub"));
3460 case PACKET_SUPPORT_UNKNOWN
:
3461 if (fetch_register_using_p (regnum
))
3463 /* The stub recognized the 'p' packet. Remember this. */
3464 remote_protocol_packets
[PACKET_p
].support
= PACKET_ENABLE
;
3469 /* The stub does not support the 'P' packet. Use 'G'
3470 instead, and don't try using 'P' in the future (it
3471 will just waste our time). */
3472 remote_protocol_packets
[PACKET_p
].support
= PACKET_DISABLE
;
3477 sprintf (rs
->buf
, "g");
3478 remote_send (&rs
->buf
, &rs
->buf_size
);
3481 /* Save the size of the packet sent to us by the target. Its used
3482 as a heuristic when determining the max size of packets that the
3483 target can safely receive. */
3484 if ((rsa
->actual_register_packet_size
) == 0)
3485 (rsa
->actual_register_packet_size
) = strlen (buf
);
3487 /* Unimplemented registers read as all bits zero. */
3488 memset (regs
, 0, rsa
->sizeof_g_packet
);
3490 /* We can get out of synch in various cases. If the first character
3491 in the buffer is not a hex character, assume that has happened
3492 and try to fetch another packet to read. */
3493 while ((buf
[0] < '0' || buf
[0] > '9')
3494 && (buf
[0] < 'A' || buf
[0] > 'F')
3495 && (buf
[0] < 'a' || buf
[0] > 'f')
3496 && buf
[0] != 'x') /* New: unavailable register value. */
3499 fprintf_unfiltered (gdb_stdlog
,
3500 "Bad register packet; fetching a new packet\n");
3501 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3505 /* Reply describes registers byte by byte, each byte encoded as two
3506 hex characters. Suck them all up, then supply them to the
3507 register cacheing/storage mechanism. */
3510 for (i
= 0; i
< rsa
->sizeof_g_packet
; i
++)
3516 warning (_("Remote reply is of odd length: %s"), buf
);
3517 /* Don't change register_bytes_found in this case, and don't
3518 print a second warning. */
3521 if (p
[0] == 'x' && p
[1] == 'x')
3522 regs
[i
] = 0; /* 'x' */
3524 regs
[i
] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
3528 if (i
!= register_bytes_found
)
3530 register_bytes_found
= i
;
3531 if (REGISTER_BYTES_OK_P ()
3532 && !REGISTER_BYTES_OK (i
))
3533 warning (_("Remote reply is wrong length: %s"), buf
);
3539 for (i
= 0; i
< NUM_REGS
+ NUM_PSEUDO_REGS
; i
++)
3541 struct packet_reg
*r
= &rsa
->regs
[i
];
3544 if (r
->offset
* 2 >= strlen (buf
))
3545 /* A short packet that didn't include the register's
3546 value, this implies that the register is zero (and
3547 not that the register is unavailable). Supply that
3549 regcache_raw_supply (current_regcache
, r
->regnum
, NULL
);
3550 else if (buf
[r
->offset
* 2] == 'x')
3552 gdb_assert (r
->offset
* 2 < strlen (buf
));
3553 /* The register isn't available, mark it as such (at
3554 the same time setting the value to zero). */
3555 regcache_raw_supply (current_regcache
, r
->regnum
, NULL
);
3556 set_register_cached (i
, -1);
3559 regcache_raw_supply (current_regcache
, r
->regnum
,
3566 /* Prepare to store registers. Since we may send them all (using a
3567 'G' request), we have to read out the ones we don't want to change
3571 remote_prepare_to_store (void)
3573 struct remote_arch_state
*rsa
= get_remote_arch_state ();
3575 gdb_byte buf
[MAX_REGISTER_SIZE
];
3577 /* Make sure the entire registers array is valid. */
3578 switch (remote_protocol_packets
[PACKET_P
].support
)
3580 case PACKET_DISABLE
:
3581 case PACKET_SUPPORT_UNKNOWN
:
3582 /* Make sure all the necessary registers are cached. */
3583 for (i
= 0; i
< NUM_REGS
; i
++)
3584 if (rsa
->regs
[i
].in_g_packet
)
3585 regcache_raw_read (current_regcache
, rsa
->regs
[i
].regnum
, buf
);
3592 /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF
3593 packet was not recognized. */
3596 store_register_using_P (int regnum
)
3598 struct remote_state
*rs
= get_remote_state ();
3599 struct remote_arch_state
*rsa
= get_remote_arch_state ();
3600 struct packet_reg
*reg
= packet_reg_from_regnum (rsa
, regnum
);
3601 /* Try storing a single register. */
3602 char *buf
= rs
->buf
;
3603 gdb_byte regp
[MAX_REGISTER_SIZE
];
3606 xsnprintf (buf
, get_remote_packet_size (), "P%s=", phex_nz (reg
->pnum
, 0));
3607 p
= buf
+ strlen (buf
);
3608 regcache_raw_collect (current_regcache
, reg
->regnum
, regp
);
3609 bin2hex (regp
, p
, register_size (current_gdbarch
, reg
->regnum
));
3610 remote_send (&rs
->buf
, &rs
->buf_size
);
3612 return rs
->buf
[0] != '\0';
3616 /* Store register REGNUM, or all registers if REGNUM == -1, from the
3617 contents of the register cache buffer. FIXME: ignores errors. */
3620 remote_store_registers (int regnum
)
3622 struct remote_state
*rs
= get_remote_state ();
3623 struct remote_arch_state
*rsa
= get_remote_arch_state ();
3627 set_thread (PIDGET (inferior_ptid
), 1);
3631 switch (remote_protocol_packets
[PACKET_P
].support
)
3633 case PACKET_DISABLE
:
3636 if (store_register_using_P (regnum
))
3639 error (_("Protocol error: P packet not recognized by stub"));
3640 case PACKET_SUPPORT_UNKNOWN
:
3641 if (store_register_using_P (regnum
))
3643 /* The stub recognized the 'P' packet. Remember this. */
3644 remote_protocol_packets
[PACKET_P
].support
= PACKET_ENABLE
;
3649 /* The stub does not support the 'P' packet. Use 'G'
3650 instead, and don't try using 'P' in the future (it
3651 will just waste our time). */
3652 remote_protocol_packets
[PACKET_P
].support
= PACKET_DISABLE
;
3658 /* Extract all the registers in the regcache copying them into a
3662 regs
= alloca (rsa
->sizeof_g_packet
);
3663 memset (regs
, 0, rsa
->sizeof_g_packet
);
3664 for (i
= 0; i
< NUM_REGS
+ NUM_PSEUDO_REGS
; i
++)
3666 struct packet_reg
*r
= &rsa
->regs
[i
];
3668 regcache_raw_collect (current_regcache
, r
->regnum
, regs
+ r
->offset
);
3672 /* Command describes registers byte by byte,
3673 each byte encoded as two hex characters. */
3676 /* remote_prepare_to_store insures that register_bytes_found gets set. */
3677 bin2hex (regs
, p
, register_bytes_found
);
3678 remote_send (&rs
->buf
, &rs
->buf_size
);
3682 /* Return the number of hex digits in num. */
3685 hexnumlen (ULONGEST num
)
3689 for (i
= 0; num
!= 0; i
++)
3695 /* Set BUF to the minimum number of hex digits representing NUM. */
3698 hexnumstr (char *buf
, ULONGEST num
)
3700 int len
= hexnumlen (num
);
3701 return hexnumnstr (buf
, num
, len
);
3705 /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */
3708 hexnumnstr (char *buf
, ULONGEST num
, int width
)
3714 for (i
= width
- 1; i
>= 0; i
--)
3716 buf
[i
] = "0123456789abcdef"[(num
& 0xf)];
3723 /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */
3726 remote_address_masked (CORE_ADDR addr
)
3728 if (remote_address_size
> 0
3729 && remote_address_size
< (sizeof (ULONGEST
) * 8))
3731 /* Only create a mask when that mask can safely be constructed
3732 in a ULONGEST variable. */
3734 mask
= (mask
<< remote_address_size
) - 1;
3740 /* Convert BUFFER, binary data at least LEN bytes long, into escaped
3741 binary data in OUT_BUF. Set *OUT_LEN to the length of the data
3742 encoded in OUT_BUF, and return the number of bytes in OUT_BUF
3743 (which may be more than *OUT_LEN due to escape characters). The
3744 total number of bytes in the output buffer will be at most
3748 remote_escape_output (const gdb_byte
*buffer
, int len
,
3749 gdb_byte
*out_buf
, int *out_len
,
3752 int input_index
, output_index
;
3755 for (input_index
= 0; input_index
< len
; input_index
++)
3757 gdb_byte b
= buffer
[input_index
];
3759 if (b
== '$' || b
== '#' || b
== '}')
3761 /* These must be escaped. */
3762 if (output_index
+ 2 > out_maxlen
)
3764 out_buf
[output_index
++] = '}';
3765 out_buf
[output_index
++] = b
^ 0x20;
3769 if (output_index
+ 1 > out_maxlen
)
3771 out_buf
[output_index
++] = b
;
3775 *out_len
= input_index
;
3776 return output_index
;
3779 /* Convert BUFFER, escaped data LEN bytes long, into binary data
3780 in OUT_BUF. Return the number of bytes written to OUT_BUF.
3781 Raise an error if the total number of bytes exceeds OUT_MAXLEN.
3783 This function reverses remote_escape_output. It allows more
3784 escaped characters than that function does, in particular because
3785 '*' must be escaped to avoid the run-length encoding processing
3786 in reading packets. */
3789 remote_unescape_input (const gdb_byte
*buffer
, int len
,
3790 gdb_byte
*out_buf
, int out_maxlen
)
3792 int input_index
, output_index
;
3797 for (input_index
= 0; input_index
< len
; input_index
++)
3799 gdb_byte b
= buffer
[input_index
];
3801 if (output_index
+ 1 > out_maxlen
)
3803 warning (_("Received too much data from remote target;"
3804 " ignoring overflow."));
3805 return output_index
;
3810 out_buf
[output_index
++] = b
^ 0x20;
3816 out_buf
[output_index
++] = b
;
3820 error (_("Unmatched escape character in target response."));
3822 return output_index
;
3825 /* Determine whether the remote target supports binary downloading.
3826 This is accomplished by sending a no-op memory write of zero length
3827 to the target at the specified address. It does not suffice to send
3828 the whole packet, since many stubs strip the eighth bit and
3829 subsequently compute a wrong checksum, which causes real havoc with
3832 NOTE: This can still lose if the serial line is not eight-bit
3833 clean. In cases like this, the user should clear "remote
3837 check_binary_download (CORE_ADDR addr
)
3839 struct remote_state
*rs
= get_remote_state ();
3841 switch (remote_protocol_packets
[PACKET_X
].support
)
3843 case PACKET_DISABLE
:
3847 case PACKET_SUPPORT_UNKNOWN
:
3853 p
+= hexnumstr (p
, (ULONGEST
) addr
);
3855 p
+= hexnumstr (p
, (ULONGEST
) 0);
3859 putpkt_binary (rs
->buf
, (int) (p
- rs
->buf
));
3860 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3862 if (rs
->buf
[0] == '\0')
3865 fprintf_unfiltered (gdb_stdlog
,
3866 "binary downloading NOT suppported by target\n");
3867 remote_protocol_packets
[PACKET_X
].support
= PACKET_DISABLE
;
3872 fprintf_unfiltered (gdb_stdlog
,
3873 "binary downloading suppported by target\n");
3874 remote_protocol_packets
[PACKET_X
].support
= PACKET_ENABLE
;
3881 /* Write memory data directly to the remote machine.
3882 This does not inform the data cache; the data cache uses this.
3883 HEADER is the starting part of the packet.
3884 MEMADDR is the address in the remote memory space.
3885 MYADDR is the address of the buffer in our space.
3886 LEN is the number of bytes.
3887 PACKET_FORMAT should be either 'X' or 'M', and indicates if we
3888 should send data as binary ('X'), or hex-encoded ('M').
3890 The function creates packet of the form
3891 <HEADER><ADDRESS>,<LENGTH>:<DATA>
3893 where encoding of <DATA> is termined by PACKET_FORMAT.
3895 If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma
3898 Returns the number of bytes transferred, or 0 (setting errno) for
3899 error. Only transfer a single packet. */
3902 remote_write_bytes_aux (const char *header
, CORE_ADDR memaddr
,
3903 const gdb_byte
*myaddr
, int len
,
3904 char packet_format
, int use_length
)
3906 struct remote_state
*rs
= get_remote_state ();
3916 if (packet_format
!= 'X' && packet_format
!= 'M')
3917 internal_error (__FILE__
, __LINE__
,
3918 "remote_write_bytes_aux: bad packet format");
3920 /* Should this be the selected frame? */
3921 gdbarch_remote_translate_xfer_address (current_gdbarch
,
3929 payload_size
= get_memory_write_packet_size ();
3931 /* The packet buffer will be large enough for the payload;
3932 get_memory_packet_size ensures this. */
3935 /* Compute the size of the actual payload by subtracting out the
3936 packet header and footer overhead: "$M<memaddr>,<len>:...#nn".
3938 payload_size
-= strlen ("$,:#NN");
3940 /* The comma won't be used. */
3942 header_length
= strlen (header
);
3943 payload_size
-= header_length
;
3944 payload_size
-= hexnumlen (memaddr
);
3946 /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */
3948 strcat (rs
->buf
, header
);
3949 p
= rs
->buf
+ strlen (header
);
3951 /* Compute a best guess of the number of bytes actually transfered. */
3952 if (packet_format
== 'X')
3954 /* Best guess at number of bytes that will fit. */
3955 todo
= min (len
, payload_size
);
3957 payload_size
-= hexnumlen (todo
);
3958 todo
= min (todo
, payload_size
);
3962 /* Num bytes that will fit. */
3963 todo
= min (len
, payload_size
/ 2);
3965 payload_size
-= hexnumlen (todo
);
3966 todo
= min (todo
, payload_size
/ 2);
3970 internal_error (__FILE__
, __LINE__
,
3971 _("minumum packet size too small to write data"));
3973 /* If we already need another packet, then try to align the end
3974 of this packet to a useful boundary. */
3975 if (todo
> 2 * REMOTE_ALIGN_WRITES
&& todo
< len
)
3976 todo
= ((memaddr
+ todo
) & ~(REMOTE_ALIGN_WRITES
- 1)) - memaddr
;
3978 /* Append "<memaddr>". */
3979 memaddr
= remote_address_masked (memaddr
);
3980 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
3987 /* Append <len>. Retain the location/size of <len>. It may need to
3988 be adjusted once the packet body has been created. */
3990 plenlen
= hexnumstr (p
, (ULONGEST
) todo
);
3998 /* Append the packet body. */
3999 if (packet_format
== 'X')
4001 /* Binary mode. Send target system values byte by byte, in
4002 increasing byte addresses. Only escape certain critical
4004 payload_length
= remote_escape_output (myaddr
, todo
, p
, &nr_bytes
,
4007 /* If not all TODO bytes fit, then we'll need another packet. Make
4008 a second try to keep the end of the packet aligned. Don't do
4009 this if the packet is tiny. */
4010 if (nr_bytes
< todo
&& nr_bytes
> 2 * REMOTE_ALIGN_WRITES
)
4014 new_nr_bytes
= (((memaddr
+ nr_bytes
) & ~(REMOTE_ALIGN_WRITES
- 1))
4016 if (new_nr_bytes
!= nr_bytes
)
4017 payload_length
= remote_escape_output (myaddr
, new_nr_bytes
,
4022 p
+= payload_length
;
4023 if (use_length
&& nr_bytes
< todo
)
4025 /* Escape chars have filled up the buffer prematurely,
4026 and we have actually sent fewer bytes than planned.
4027 Fix-up the length field of the packet. Use the same
4028 number of characters as before. */
4029 plen
+= hexnumnstr (plen
, (ULONGEST
) nr_bytes
, plenlen
);
4030 *plen
= ':'; /* overwrite \0 from hexnumnstr() */
4035 /* Normal mode: Send target system values byte by byte, in
4036 increasing byte addresses. Each byte is encoded as a two hex
4038 nr_bytes
= bin2hex (myaddr
, p
, todo
);
4042 putpkt_binary (rs
->buf
, (int) (p
- rs
->buf
));
4043 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4045 if (rs
->buf
[0] == 'E')
4047 /* There is no correspondance between what the remote protocol
4048 uses for errors and errno codes. We would like a cleaner way
4049 of representing errors (big enough to include errno codes,
4050 bfd_error codes, and others). But for now just return EIO. */
4055 /* Return NR_BYTES, not TODO, in case escape chars caused us to send
4056 fewer bytes than we'd planned. */
4060 /* Write memory data directly to the remote machine.
4061 This does not inform the data cache; the data cache uses this.
4062 MEMADDR is the address in the remote memory space.
4063 MYADDR is the address of the buffer in our space.
4064 LEN is the number of bytes.
4066 Returns number of bytes transferred, or 0 (setting errno) for
4067 error. Only transfer a single packet. */
4070 remote_write_bytes (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, int len
)
4072 char *packet_format
= 0;
4074 /* Check whether the target supports binary download. */
4075 check_binary_download (memaddr
);
4077 switch (remote_protocol_packets
[PACKET_X
].support
)
4080 packet_format
= "X";
4082 case PACKET_DISABLE
:
4083 packet_format
= "M";
4085 case PACKET_SUPPORT_UNKNOWN
:
4086 internal_error (__FILE__
, __LINE__
,
4087 _("remote_write_bytes: bad internal state"));
4089 internal_error (__FILE__
, __LINE__
, _("bad switch"));
4092 return remote_write_bytes_aux (packet_format
,
4093 memaddr
, myaddr
, len
, packet_format
[0], 1);
4096 /* Read memory data directly from the remote machine.
4097 This does not use the data cache; the data cache uses this.
4098 MEMADDR is the address in the remote memory space.
4099 MYADDR is the address of the buffer in our space.
4100 LEN is the number of bytes.
4102 Returns number of bytes transferred, or 0 for error. */
4104 /* NOTE: cagney/1999-10-18: This function (and its siblings in other
4105 remote targets) shouldn't attempt to read the entire buffer.
4106 Instead it should read a single packet worth of data and then
4107 return the byte size of that packet to the caller. The caller (its
4108 caller and its callers caller ;-) already contains code for
4109 handling partial reads. */
4112 remote_read_bytes (CORE_ADDR memaddr
, gdb_byte
*myaddr
, int len
)
4114 struct remote_state
*rs
= get_remote_state ();
4115 int max_buf_size
; /* Max size of packet output buffer. */
4118 /* Should this be the selected frame? */
4119 gdbarch_remote_translate_xfer_address (current_gdbarch
,
4127 max_buf_size
= get_memory_read_packet_size ();
4128 /* The packet buffer will be large enough for the payload;
4129 get_memory_packet_size ensures this. */
4138 todo
= min (len
, max_buf_size
/ 2); /* num bytes that will fit */
4140 /* construct "m"<memaddr>","<len>" */
4141 /* sprintf (rs->buf, "m%lx,%x", (unsigned long) memaddr, todo); */
4142 memaddr
= remote_address_masked (memaddr
);
4145 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
4147 p
+= hexnumstr (p
, (ULONGEST
) todo
);
4151 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4153 if (rs
->buf
[0] == 'E'
4154 && isxdigit (rs
->buf
[1]) && isxdigit (rs
->buf
[2])
4155 && rs
->buf
[3] == '\0')
4157 /* There is no correspondance between what the remote
4158 protocol uses for errors and errno codes. We would like
4159 a cleaner way of representing errors (big enough to
4160 include errno codes, bfd_error codes, and others). But
4161 for now just return EIO. */
4166 /* Reply describes memory byte by byte,
4167 each byte encoded as two hex characters. */
4170 if ((i
= hex2bin (p
, myaddr
, todo
)) < todo
)
4172 /* Reply is short. This means that we were able to read
4173 only part of what we wanted to. */
4174 return i
+ (origlen
- len
);
4183 /* Read or write LEN bytes from inferior memory at MEMADDR,
4184 transferring to or from debugger address BUFFER. Write to inferior
4185 if SHOULD_WRITE is nonzero. Returns length of data written or
4186 read; 0 for error. TARGET is unused. */
4189 remote_xfer_memory (CORE_ADDR mem_addr
, gdb_byte
*buffer
, int mem_len
,
4190 int should_write
, struct mem_attrib
*attrib
,
4191 struct target_ops
*target
)
4196 res
= remote_write_bytes (mem_addr
, buffer
, mem_len
);
4198 res
= remote_read_bytes (mem_addr
, buffer
, mem_len
);
4203 /* Sends a packet with content determined by the printf format string
4204 FORMAT and the remaining arguments, then gets the reply. Returns
4205 whether the packet was a success, a failure, or unknown. */
4208 remote_send_printf (const char *format
, ...)
4210 struct remote_state
*rs
= get_remote_state ();
4211 int max_size
= get_remote_packet_size ();
4214 va_start (ap
, format
);
4217 if (vsnprintf (rs
->buf
, max_size
, format
, ap
) >= max_size
)
4218 internal_error (__FILE__
, __LINE__
, "Too long remote packet.");
4220 if (putpkt (rs
->buf
) < 0)
4221 error (_("Communication problem with target."));
4224 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4226 return packet_check_result (rs
->buf
);
4230 restore_remote_timeout (void *p
)
4232 int value
= *(int *)p
;
4233 remote_timeout
= value
;
4236 /* Flash writing can take quite some time. We'll set
4237 effectively infinite timeout for flash operations.
4238 In future, we'll need to decide on a better approach. */
4239 static const int remote_flash_timeout
= 1000;
4242 remote_flash_erase (struct target_ops
*ops
,
4243 ULONGEST address
, LONGEST length
)
4245 int saved_remote_timeout
= remote_timeout
;
4246 enum packet_result ret
;
4248 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
4249 &saved_remote_timeout
);
4250 remote_timeout
= remote_flash_timeout
;
4252 ret
= remote_send_printf ("vFlashErase:%s,%s",
4257 case PACKET_UNKNOWN
:
4258 error (_("Remote target does not support flash erase"));
4260 error (_("Error erasing flash with vFlashErase packet"));
4265 do_cleanups (back_to
);
4269 remote_flash_write (struct target_ops
*ops
,
4270 ULONGEST address
, LONGEST length
,
4271 const gdb_byte
*data
)
4273 int saved_remote_timeout
= remote_timeout
;
4275 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
4276 &saved_remote_timeout
);
4278 remote_timeout
= remote_flash_timeout
;
4279 ret
= remote_write_bytes_aux ("vFlashWrite:", address
, data
, length
, 'X', 0);
4280 do_cleanups (back_to
);
4286 remote_flash_done (struct target_ops
*ops
)
4288 int saved_remote_timeout
= remote_timeout
;
4290 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
4291 &saved_remote_timeout
);
4293 remote_timeout
= remote_flash_timeout
;
4294 ret
= remote_send_printf ("vFlashDone");
4295 do_cleanups (back_to
);
4299 case PACKET_UNKNOWN
:
4300 error (_("Remote target does not support vFlashDone"));
4302 error (_("Error finishing flash operation"));
4309 remote_files_info (struct target_ops
*ignore
)
4311 puts_filtered ("Debugging a target over a serial line.\n");
4314 /* Stuff for dealing with the packets which are part of this protocol.
4315 See comment at top of file for details. */
4317 /* Read a single character from the remote end. */
4320 readchar (int timeout
)
4324 ch
= serial_readchar (remote_desc
, timeout
);
4329 switch ((enum serial_rc
) ch
)
4332 target_mourn_inferior ();
4333 error (_("Remote connection closed"));
4336 perror_with_name (_("Remote communication error"));
4338 case SERIAL_TIMEOUT
:
4344 /* Send the command in *BUF to the remote machine, and read the reply
4345 into *BUF. Report an error if we get an error reply. Resize
4346 *BUF using xrealloc if necessary to hold the result, and update
4350 remote_send (char **buf
,
4354 getpkt (buf
, sizeof_buf
, 0);
4356 if ((*buf
)[0] == 'E')
4357 error (_("Remote failure reply: %s"), *buf
);
4360 /* Display a null-terminated packet on stdout, for debugging, using C
4364 print_packet (char *buf
)
4366 puts_filtered ("\"");
4367 fputstr_filtered (buf
, '"', gdb_stdout
);
4368 puts_filtered ("\"");
4374 return putpkt_binary (buf
, strlen (buf
));
4377 /* Send a packet to the remote machine, with error checking. The data
4378 of the packet is in BUF. The string in BUF can be at most
4379 get_remote_packet_size () - 5 to account for the $, # and checksum,
4380 and for a possible /0 if we are debugging (remote_debug) and want
4381 to print the sent packet as a string. */
4384 putpkt_binary (char *buf
, int cnt
)
4387 unsigned char csum
= 0;
4388 char *buf2
= alloca (cnt
+ 6);
4394 /* Copy the packet into buffer BUF2, encapsulating it
4395 and giving it a checksum. */
4400 for (i
= 0; i
< cnt
; i
++)
4406 *p
++ = tohex ((csum
>> 4) & 0xf);
4407 *p
++ = tohex (csum
& 0xf);
4409 /* Send it over and over until we get a positive ack. */
4413 int started_error_output
= 0;
4418 fprintf_unfiltered (gdb_stdlog
, "Sending packet: ");
4419 fputstrn_unfiltered (buf2
, p
- buf2
, 0, gdb_stdlog
);
4420 fprintf_unfiltered (gdb_stdlog
, "...");
4421 gdb_flush (gdb_stdlog
);
4423 if (serial_write (remote_desc
, buf2
, p
- buf2
))
4424 perror_with_name (_("putpkt: write failed"));
4426 /* Read until either a timeout occurs (-2) or '+' is read. */
4429 ch
= readchar (remote_timeout
);
4437 case SERIAL_TIMEOUT
:
4439 if (started_error_output
)
4441 putchar_unfiltered ('\n');
4442 started_error_output
= 0;
4451 fprintf_unfiltered (gdb_stdlog
, "Ack\n");
4455 fprintf_unfiltered (gdb_stdlog
, "Nak\n");
4456 case SERIAL_TIMEOUT
:
4460 break; /* Retransmit buffer. */
4464 fprintf_unfiltered (gdb_stdlog
,
4465 "Packet instead of Ack, ignoring it\n");
4466 /* It's probably an old response sent because an ACK
4467 was lost. Gobble up the packet and ack it so it
4468 doesn't get retransmitted when we resend this
4471 serial_write (remote_desc
, "+", 1);
4472 continue; /* Now, go look for +. */
4477 if (!started_error_output
)
4479 started_error_output
= 1;
4480 fprintf_unfiltered (gdb_stdlog
, "putpkt: Junk: ");
4482 fputc_unfiltered (ch
& 0177, gdb_stdlog
);
4486 break; /* Here to retransmit. */
4490 /* This is wrong. If doing a long backtrace, the user should be
4491 able to get out next time we call QUIT, without anything as
4492 violent as interrupt_query. If we want to provide a way out of
4493 here without getting to the next QUIT, it should be based on
4494 hitting ^C twice as in remote_wait. */
4504 /* Come here after finding the start of a frame when we expected an
4505 ack. Do our best to discard the rest of this packet. */
4514 c
= readchar (remote_timeout
);
4517 case SERIAL_TIMEOUT
:
4518 /* Nothing we can do. */
4521 /* Discard the two bytes of checksum and stop. */
4522 c
= readchar (remote_timeout
);
4524 c
= readchar (remote_timeout
);
4527 case '*': /* Run length encoding. */
4528 /* Discard the repeat count. */
4529 c
= readchar (remote_timeout
);
4534 /* A regular character. */
4540 /* Come here after finding the start of the frame. Collect the rest
4541 into *BUF, verifying the checksum, length, and handling run-length
4542 compression. NUL terminate the buffer. If there is not enough room,
4543 expand *BUF using xrealloc.
4545 Returns -1 on error, number of characters in buffer (ignoring the
4546 trailing NULL) on success. (could be extended to return one of the
4547 SERIAL status indications). */
4550 read_frame (char **buf_p
,
4563 c
= readchar (remote_timeout
);
4566 case SERIAL_TIMEOUT
:
4568 fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog
);
4572 fputs_filtered ("Saw new packet start in middle of old one\n",
4574 return -1; /* Start a new packet, count retries. */
4577 unsigned char pktcsum
;
4583 check_0
= readchar (remote_timeout
);
4585 check_1
= readchar (remote_timeout
);
4587 if (check_0
== SERIAL_TIMEOUT
|| check_1
== SERIAL_TIMEOUT
)
4590 fputs_filtered ("Timeout in checksum, retrying\n",
4594 else if (check_0
< 0 || check_1
< 0)
4597 fputs_filtered ("Communication error in checksum\n",
4602 pktcsum
= (fromhex (check_0
) << 4) | fromhex (check_1
);
4603 if (csum
== pktcsum
)
4608 fprintf_filtered (gdb_stdlog
,
4609 "Bad checksum, sentsum=0x%x, csum=0x%x, buf=",
4611 fputstrn_filtered (buf
, bc
, 0, gdb_stdlog
);
4612 fputs_filtered ("\n", gdb_stdlog
);
4614 /* Number of characters in buffer ignoring trailing
4618 case '*': /* Run length encoding. */
4623 c
= readchar (remote_timeout
);
4625 repeat
= c
- ' ' + 3; /* Compute repeat count. */
4627 /* The character before ``*'' is repeated. */
4629 if (repeat
> 0 && repeat
<= 255 && bc
> 0)
4631 if (bc
+ repeat
- 1 >= *sizeof_buf
- 1)
4633 /* Make some more room in the buffer. */
4634 *sizeof_buf
+= repeat
;
4635 *buf_p
= xrealloc (*buf_p
, *sizeof_buf
);
4639 memset (&buf
[bc
], buf
[bc
- 1], repeat
);
4645 printf_filtered (_("Invalid run length encoding: %s\n"), buf
);
4649 if (bc
>= *sizeof_buf
- 1)
4651 /* Make some more room in the buffer. */
4653 *buf_p
= xrealloc (*buf_p
, *sizeof_buf
);
4664 /* Read a packet from the remote machine, with error checking, and
4665 store it in *BUF. Resize *BUF using xrealloc if necessary to hold
4666 the result, and update *SIZEOF_BUF. If FOREVER, wait forever
4667 rather than timing out; this is used (in synchronous mode) to wait
4668 for a target that is is executing user code to stop. */
4669 /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we
4670 don't have to change all the calls to getpkt to deal with the
4671 return value, because at the moment I don't know what the right
4672 thing to do it for those. */
4680 timed_out
= getpkt_sane (buf
, sizeof_buf
, forever
);
4684 /* Read a packet from the remote machine, with error checking, and
4685 store it in *BUF. Resize *BUF using xrealloc if necessary to hold
4686 the result, and update *SIZEOF_BUF. If FOREVER, wait forever
4687 rather than timing out; this is used (in synchronous mode) to wait
4688 for a target that is is executing user code to stop. If FOREVER ==
4689 0, this function is allowed to time out gracefully and return an
4690 indication of this to the caller. Otherwise return the number
4693 getpkt_sane (char **buf
, long *sizeof_buf
, int forever
)
4700 strcpy (*buf
, "timeout");
4704 timeout
= watchdog
> 0 ? watchdog
: -1;
4708 timeout
= remote_timeout
;
4712 for (tries
= 1; tries
<= MAX_TRIES
; tries
++)
4714 /* This can loop forever if the remote side sends us characters
4715 continuously, but if it pauses, we'll get a zero from
4716 readchar because of timeout. Then we'll count that as a
4719 /* Note that we will only wait forever prior to the start of a
4720 packet. After that, we expect characters to arrive at a
4721 brisk pace. They should show up within remote_timeout
4726 c
= readchar (timeout
);
4728 if (c
== SERIAL_TIMEOUT
)
4730 if (forever
) /* Watchdog went off? Kill the target. */
4733 target_mourn_inferior ();
4734 error (_("Watchdog has expired. Target detached."));
4737 fputs_filtered ("Timed out.\n", gdb_stdlog
);
4743 /* We've found the start of a packet, now collect the data. */
4745 val
= read_frame (buf
, sizeof_buf
);
4751 fprintf_unfiltered (gdb_stdlog
, "Packet received: ");
4752 fputstrn_unfiltered (*buf
, val
, 0, gdb_stdlog
);
4753 fprintf_unfiltered (gdb_stdlog
, "\n");
4755 serial_write (remote_desc
, "+", 1);
4759 /* Try the whole thing again. */
4761 serial_write (remote_desc
, "-", 1);
4764 /* We have tried hard enough, and just can't receive the packet.
4767 printf_unfiltered (_("Ignoring packet error, continuing...\n"));
4768 serial_write (remote_desc
, "+", 1);
4775 /* For some mysterious reason, wait_for_inferior calls kill instead of
4776 mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */
4780 target_mourn_inferior ();
4784 /* Use catch_errors so the user can quit from gdb even when we aren't on
4785 speaking terms with the remote system. */
4786 catch_errors ((catch_errors_ftype
*) putpkt
, "k", "", RETURN_MASK_ERROR
);
4788 /* Don't wait for it to die. I'm not really sure it matters whether
4789 we do or not. For the existing stubs, kill is a noop. */
4790 target_mourn_inferior ();
4793 /* Async version of remote_kill. */
4795 remote_async_kill (void)
4797 /* Unregister the file descriptor from the event loop. */
4798 if (target_is_async_p ())
4799 serial_async (remote_desc
, NULL
, 0);
4801 /* For some mysterious reason, wait_for_inferior calls kill instead of
4802 mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */
4806 target_mourn_inferior ();
4810 /* Use catch_errors so the user can quit from gdb even when we
4811 aren't on speaking terms with the remote system. */
4812 catch_errors ((catch_errors_ftype
*) putpkt
, "k", "", RETURN_MASK_ERROR
);
4814 /* Don't wait for it to die. I'm not really sure it matters whether
4815 we do or not. For the existing stubs, kill is a noop. */
4816 target_mourn_inferior ();
4822 remote_mourn_1 (&remote_ops
);
4826 remote_async_mourn (void)
4828 remote_mourn_1 (&remote_async_ops
);
4832 extended_remote_mourn (void)
4834 /* We do _not_ want to mourn the target like this; this will
4835 remove the extended remote target from the target stack,
4836 and the next time the user says "run" it'll fail.
4838 FIXME: What is the right thing to do here? */
4840 remote_mourn_1 (&extended_remote_ops
);
4844 /* Worker function for remote_mourn. */
4846 remote_mourn_1 (struct target_ops
*target
)
4848 unpush_target (target
);
4849 generic_mourn_inferior ();
4852 /* In the extended protocol we want to be able to do things like
4853 "run" and have them basically work as expected. So we need
4854 a special create_inferior function.
4856 FIXME: One day add support for changing the exec file
4857 we're debugging, arguments and an environment. */
4860 extended_remote_create_inferior (char *exec_file
, char *args
,
4861 char **env
, int from_tty
)
4863 /* Rip out the breakpoints; we'll reinsert them after restarting
4864 the remote server. */
4865 remove_breakpoints ();
4867 /* Now restart the remote server. */
4868 extended_remote_restart ();
4870 /* Now put the breakpoints back in. This way we're safe if the
4871 restart function works via a unix fork on the remote side. */
4872 insert_breakpoints ();
4874 /* Clean up from the last time we were running. */
4875 clear_proceed_status ();
4878 /* Async version of extended_remote_create_inferior. */
4880 extended_remote_async_create_inferior (char *exec_file
, char *args
,
4881 char **env
, int from_tty
)
4883 /* Rip out the breakpoints; we'll reinsert them after restarting
4884 the remote server. */
4885 remove_breakpoints ();
4887 /* If running asynchronously, register the target file descriptor
4888 with the event loop. */
4889 if (target_can_async_p ())
4890 target_async (inferior_event_handler
, 0);
4892 /* Now restart the remote server. */
4893 extended_remote_restart ();
4895 /* Now put the breakpoints back in. This way we're safe if the
4896 restart function works via a unix fork on the remote side. */
4897 insert_breakpoints ();
4899 /* Clean up from the last time we were running. */
4900 clear_proceed_status ();
4904 /* On some machines, e.g. 68k, we may use a different breakpoint
4905 instruction than other targets; in those use
4906 DEPRECATED_REMOTE_BREAKPOINT instead of just BREAKPOINT_FROM_PC.
4907 Also, bi-endian targets may define
4908 DEPRECATED_LITTLE_REMOTE_BREAKPOINT and
4909 DEPRECATED_BIG_REMOTE_BREAKPOINT. If none of these are defined, we
4910 just call the standard routines that are in mem-break.c. */
4912 /* NOTE: cagney/2003-06-08: This is silly. A remote and simulator
4913 target should use an identical BREAKPOINT_FROM_PC. As for native,
4914 the ARCH-OS-tdep.c code can override the default. */
4916 #if defined (DEPRECATED_LITTLE_REMOTE_BREAKPOINT) && defined (DEPRECATED_BIG_REMOTE_BREAKPOINT) && !defined(DEPRECATED_REMOTE_BREAKPOINT)
4917 #define DEPRECATED_REMOTE_BREAKPOINT
4920 #ifdef DEPRECATED_REMOTE_BREAKPOINT
4922 /* If the target isn't bi-endian, just pretend it is. */
4923 #if !defined (DEPRECATED_LITTLE_REMOTE_BREAKPOINT) && !defined (DEPRECATED_BIG_REMOTE_BREAKPOINT)
4924 #define DEPRECATED_LITTLE_REMOTE_BREAKPOINT DEPRECATED_REMOTE_BREAKPOINT
4925 #define DEPRECATED_BIG_REMOTE_BREAKPOINT DEPRECATED_REMOTE_BREAKPOINT
4928 static unsigned char big_break_insn
[] = DEPRECATED_BIG_REMOTE_BREAKPOINT
;
4929 static unsigned char little_break_insn
[] = DEPRECATED_LITTLE_REMOTE_BREAKPOINT
;
4931 #endif /* DEPRECATED_REMOTE_BREAKPOINT */
4933 /* Insert a breakpoint. On targets that have software breakpoint
4934 support, we ask the remote target to do the work; on targets
4935 which don't, we insert a traditional memory breakpoint. */
4938 remote_insert_breakpoint (struct bp_target_info
*bp_tgt
)
4940 CORE_ADDR addr
= bp_tgt
->placed_address
;
4941 struct remote_state
*rs
= get_remote_state ();
4942 #ifdef DEPRECATED_REMOTE_BREAKPOINT
4946 /* Try the "Z" s/w breakpoint packet if it is not already disabled.
4947 If it succeeds, then set the support to PACKET_ENABLE. If it
4948 fails, and the user has explicitly requested the Z support then
4949 report an error, otherwise, mark it disabled and go on. */
4951 if (remote_protocol_packets
[PACKET_Z0
].support
!= PACKET_DISABLE
)
4958 BREAKPOINT_FROM_PC (&bp_tgt
->placed_address
, &bp_tgt
->placed_size
);
4959 addr
= (ULONGEST
) remote_address_masked (bp_tgt
->placed_address
);
4960 p
+= hexnumstr (p
, addr
);
4961 sprintf (p
, ",%d", bp_tgt
->placed_size
);
4964 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4966 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
]))
4972 case PACKET_UNKNOWN
:
4977 #ifdef DEPRECATED_REMOTE_BREAKPOINT
4978 bp_tgt
->placed_size
= bp_tgt
->shadow_len
= sizeof big_break_insn
;
4979 val
= target_read_memory (addr
, bp_tgt
->shadow_contents
, bp_tgt
->shadow_len
);
4983 if (TARGET_BYTE_ORDER
== BFD_ENDIAN_BIG
)
4984 val
= target_write_memory (addr
, (char *) big_break_insn
,
4985 sizeof big_break_insn
);
4987 val
= target_write_memory (addr
, (char *) little_break_insn
,
4988 sizeof little_break_insn
);
4993 return memory_insert_breakpoint (bp_tgt
);
4994 #endif /* DEPRECATED_REMOTE_BREAKPOINT */
4998 remote_remove_breakpoint (struct bp_target_info
*bp_tgt
)
5000 CORE_ADDR addr
= bp_tgt
->placed_address
;
5001 struct remote_state
*rs
= get_remote_state ();
5004 if (remote_protocol_packets
[PACKET_Z0
].support
!= PACKET_DISABLE
)
5012 addr
= (ULONGEST
) remote_address_masked (bp_tgt
->placed_address
);
5013 p
+= hexnumstr (p
, addr
);
5014 sprintf (p
, ",%d", bp_tgt
->placed_size
);
5017 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5019 return (rs
->buf
[0] == 'E');
5022 #ifdef DEPRECATED_REMOTE_BREAKPOINT
5023 return target_write_memory (bp_tgt
->placed_address
, bp_tgt
->shadow_contents
,
5024 bp_tgt
->shadow_len
);
5026 return memory_remove_breakpoint (bp_tgt
);
5027 #endif /* DEPRECATED_REMOTE_BREAKPOINT */
5031 watchpoint_to_Z_packet (int type
)
5036 return Z_PACKET_WRITE_WP
;
5039 return Z_PACKET_READ_WP
;
5042 return Z_PACKET_ACCESS_WP
;
5045 internal_error (__FILE__
, __LINE__
,
5046 _("hw_bp_to_z: bad watchpoint type %d"), type
);
5051 remote_insert_watchpoint (CORE_ADDR addr
, int len
, int type
)
5053 struct remote_state
*rs
= get_remote_state ();
5055 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
5057 if (remote_protocol_packets
[PACKET_Z0
+ packet
].support
== PACKET_DISABLE
)
5060 sprintf (rs
->buf
, "Z%x,", packet
);
5061 p
= strchr (rs
->buf
, '\0');
5062 addr
= remote_address_masked (addr
);
5063 p
+= hexnumstr (p
, (ULONGEST
) addr
);
5064 sprintf (p
, ",%x", len
);
5067 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5069 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
+ packet
]))
5072 case PACKET_UNKNOWN
:
5077 internal_error (__FILE__
, __LINE__
,
5078 _("remote_insert_watchpoint: reached end of function"));
5083 remote_remove_watchpoint (CORE_ADDR addr
, int len
, int type
)
5085 struct remote_state
*rs
= get_remote_state ();
5087 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
5089 if (remote_protocol_packets
[PACKET_Z0
+ packet
].support
== PACKET_DISABLE
)
5092 sprintf (rs
->buf
, "z%x,", packet
);
5093 p
= strchr (rs
->buf
, '\0');
5094 addr
= remote_address_masked (addr
);
5095 p
+= hexnumstr (p
, (ULONGEST
) addr
);
5096 sprintf (p
, ",%x", len
);
5098 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5100 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
+ packet
]))
5103 case PACKET_UNKNOWN
:
5108 internal_error (__FILE__
, __LINE__
,
5109 _("remote_remove_watchpoint: reached end of function"));
5113 int remote_hw_watchpoint_limit
= -1;
5114 int remote_hw_breakpoint_limit
= -1;
5117 remote_check_watch_resources (int type
, int cnt
, int ot
)
5119 if (type
== bp_hardware_breakpoint
)
5121 if (remote_hw_breakpoint_limit
== 0)
5123 else if (remote_hw_breakpoint_limit
< 0)
5125 else if (cnt
<= remote_hw_breakpoint_limit
)
5130 if (remote_hw_watchpoint_limit
== 0)
5132 else if (remote_hw_watchpoint_limit
< 0)
5136 else if (cnt
<= remote_hw_watchpoint_limit
)
5143 remote_stopped_by_watchpoint (void)
5145 return remote_stopped_by_watchpoint_p
;
5148 extern int stepped_after_stopped_by_watchpoint
;
5151 remote_stopped_data_address (struct target_ops
*target
, CORE_ADDR
*addr_p
)
5154 if (remote_stopped_by_watchpoint ()
5155 || stepped_after_stopped_by_watchpoint
)
5157 *addr_p
= remote_watch_data_address
;
5166 remote_insert_hw_breakpoint (struct bp_target_info
*bp_tgt
)
5169 struct remote_state
*rs
= get_remote_state ();
5172 /* The length field should be set to the size of a breakpoint
5173 instruction, even though we aren't inserting one ourselves. */
5175 BREAKPOINT_FROM_PC (&bp_tgt
->placed_address
, &bp_tgt
->placed_size
);
5177 if (remote_protocol_packets
[PACKET_Z1
].support
== PACKET_DISABLE
)
5184 addr
= remote_address_masked (bp_tgt
->placed_address
);
5185 p
+= hexnumstr (p
, (ULONGEST
) addr
);
5186 sprintf (p
, ",%x", bp_tgt
->placed_size
);
5189 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5191 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z1
]))
5194 case PACKET_UNKNOWN
:
5199 internal_error (__FILE__
, __LINE__
,
5200 _("remote_insert_hw_breakpoint: reached end of function"));
5205 remote_remove_hw_breakpoint (struct bp_target_info
*bp_tgt
)
5208 struct remote_state
*rs
= get_remote_state ();
5211 if (remote_protocol_packets
[PACKET_Z1
].support
== PACKET_DISABLE
)
5218 addr
= remote_address_masked (bp_tgt
->placed_address
);
5219 p
+= hexnumstr (p
, (ULONGEST
) addr
);
5220 sprintf (p
, ",%x", bp_tgt
->placed_size
);
5223 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5225 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z1
]))
5228 case PACKET_UNKNOWN
:
5233 internal_error (__FILE__
, __LINE__
,
5234 _("remote_remove_hw_breakpoint: reached end of function"));
5237 /* Some targets are only capable of doing downloads, and afterwards
5238 they switch to the remote serial protocol. This function provides
5239 a clean way to get from the download target to the remote target.
5240 It's basically just a wrapper so that we don't have to expose any
5241 of the internal workings of remote.c.
5243 Prior to calling this routine, you should shutdown the current
5244 target code, else you will get the "A program is being debugged
5245 already..." message. Usually a call to pop_target() suffices. */
5248 push_remote_target (char *name
, int from_tty
)
5250 printf_filtered (_("Switching to remote protocol\n"));
5251 remote_open (name
, from_tty
);
5254 /* Table used by the crc32 function to calcuate the checksum. */
5256 static unsigned long crc32_table
[256] =
5259 static unsigned long
5260 crc32 (unsigned char *buf
, int len
, unsigned int crc
)
5262 if (!crc32_table
[1])
5264 /* Initialize the CRC table and the decoding table. */
5268 for (i
= 0; i
< 256; i
++)
5270 for (c
= i
<< 24, j
= 8; j
> 0; --j
)
5271 c
= c
& 0x80000000 ? (c
<< 1) ^ 0x04c11db7 : (c
<< 1);
5278 crc
= (crc
<< 8) ^ crc32_table
[((crc
>> 24) ^ *buf
) & 255];
5284 /* compare-sections command
5286 With no arguments, compares each loadable section in the exec bfd
5287 with the same memory range on the target, and reports mismatches.
5288 Useful for verifying the image on the target against the exec file.
5289 Depends on the target understanding the new "qCRC:" request. */
5291 /* FIXME: cagney/1999-10-26: This command should be broken down into a
5292 target method (target verify memory) and generic version of the
5293 actual command. This will allow other high-level code (especially
5294 generic_load()) to make use of this target functionality. */
5297 compare_sections_command (char *args
, int from_tty
)
5299 struct remote_state
*rs
= get_remote_state ();
5301 unsigned long host_crc
, target_crc
;
5302 extern bfd
*exec_bfd
;
5303 struct cleanup
*old_chain
;
5306 const char *sectname
;
5313 error (_("command cannot be used without an exec file"));
5314 if (!current_target
.to_shortname
||
5315 strcmp (current_target
.to_shortname
, "remote") != 0)
5316 error (_("command can only be used with remote target"));
5318 for (s
= exec_bfd
->sections
; s
; s
= s
->next
)
5320 if (!(s
->flags
& SEC_LOAD
))
5321 continue; /* skip non-loadable section */
5323 size
= bfd_get_section_size (s
);
5325 continue; /* skip zero-length section */
5327 sectname
= bfd_get_section_name (exec_bfd
, s
);
5328 if (args
&& strcmp (args
, sectname
) != 0)
5329 continue; /* not the section selected by user */
5331 matched
= 1; /* do this section */
5333 /* FIXME: assumes lma can fit into long. */
5334 xsnprintf (rs
->buf
, get_remote_packet_size (), "qCRC:%lx,%lx",
5335 (long) lma
, (long) size
);
5338 /* Be clever; compute the host_crc before waiting for target
5340 sectdata
= xmalloc (size
);
5341 old_chain
= make_cleanup (xfree
, sectdata
);
5342 bfd_get_section_contents (exec_bfd
, s
, sectdata
, 0, size
);
5343 host_crc
= crc32 ((unsigned char *) sectdata
, size
, 0xffffffff);
5345 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5346 if (rs
->buf
[0] == 'E')
5347 error (_("target memory fault, section %s, range 0x%s -- 0x%s"),
5348 sectname
, paddr (lma
), paddr (lma
+ size
));
5349 if (rs
->buf
[0] != 'C')
5350 error (_("remote target does not support this operation"));
5352 for (target_crc
= 0, tmp
= &rs
->buf
[1]; *tmp
; tmp
++)
5353 target_crc
= target_crc
* 16 + fromhex (*tmp
);
5355 printf_filtered ("Section %s, range 0x%s -- 0x%s: ",
5356 sectname
, paddr (lma
), paddr (lma
+ size
));
5357 if (host_crc
== target_crc
)
5358 printf_filtered ("matched.\n");
5361 printf_filtered ("MIS-MATCHED!\n");
5365 do_cleanups (old_chain
);
5368 warning (_("One or more sections of the remote executable does not match\n\
5369 the loaded file\n"));
5370 if (args
&& !matched
)
5371 printf_filtered (_("No loaded section named '%s'.\n"), args
);
5374 /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet.
5375 Data at OFFSET, of up to LEN bytes, is read into READBUF; the
5376 number of bytes read is returned, or 0 for EOF, or -1 for error.
5377 The number of bytes read may be less than LEN without indicating an
5378 EOF. PACKET is checked and updated to indicate whether the remote
5379 target supports this object. */
5382 remote_read_qxfer (struct target_ops
*ops
, const char *object_name
,
5384 gdb_byte
*readbuf
, ULONGEST offset
, LONGEST len
,
5385 struct packet_config
*packet
)
5387 static char *finished_object
;
5388 static char *finished_annex
;
5389 static ULONGEST finished_offset
;
5391 struct remote_state
*rs
= get_remote_state ();
5392 unsigned int total
= 0;
5393 LONGEST i
, n
, packet_len
;
5395 if (packet
->support
== PACKET_DISABLE
)
5398 /* Check whether we've cached an end-of-object packet that matches
5400 if (finished_object
)
5402 if (strcmp (object_name
, finished_object
) == 0
5403 && strcmp (annex
? annex
: "", finished_annex
) == 0
5404 && offset
== finished_offset
)
5407 /* Otherwise, we're now reading something different. Discard
5409 xfree (finished_object
);
5410 xfree (finished_annex
);
5411 finished_object
= NULL
;
5412 finished_annex
= NULL
;
5415 /* Request only enough to fit in a single packet. The actual data
5416 may not, since we don't know how much of it will need to be escaped;
5417 the target is free to respond with slightly less data. We subtract
5418 five to account for the response type and the protocol frame. */
5419 n
= min (get_remote_packet_size () - 5, len
);
5420 snprintf (rs
->buf
, get_remote_packet_size () - 4, "qXfer:%s:read:%s:%s,%s",
5421 object_name
, annex
? annex
: "",
5422 phex_nz (offset
, sizeof offset
),
5423 phex_nz (n
, sizeof n
));
5424 i
= putpkt (rs
->buf
);
5429 packet_len
= getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0);
5430 if (packet_len
< 0 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
5433 if (rs
->buf
[0] != 'l' && rs
->buf
[0] != 'm')
5434 error (_("Unknown remote qXfer reply: %s"), rs
->buf
);
5436 /* 'm' means there is (or at least might be) more data after this
5437 batch. That does not make sense unless there's at least one byte
5438 of data in this reply. */
5439 if (rs
->buf
[0] == 'm' && packet_len
== 1)
5440 error (_("Remote qXfer reply contained no data."));
5442 /* Got some data. */
5443 i
= remote_unescape_input (rs
->buf
+ 1, packet_len
- 1, readbuf
, n
);
5445 /* 'l' is an EOF marker, possibly including a final block of data,
5446 or possibly empty. Record it to bypass the next read, if one is
5448 if (rs
->buf
[0] == 'l')
5450 finished_object
= xstrdup (object_name
);
5451 finished_annex
= xstrdup (annex
? annex
: "");
5452 finished_offset
= offset
+ i
;
5459 remote_xfer_partial (struct target_ops
*ops
, enum target_object object
,
5460 const char *annex
, gdb_byte
*readbuf
,
5461 const gdb_byte
*writebuf
, ULONGEST offset
, LONGEST len
)
5463 struct remote_state
*rs
= get_remote_state ();
5468 /* Handle memory using the standard memory routines. */
5469 if (object
== TARGET_OBJECT_MEMORY
)
5474 if (writebuf
!= NULL
)
5475 xfered
= remote_write_bytes (offset
, writebuf
, len
);
5477 xfered
= remote_read_bytes (offset
, readbuf
, len
);
5481 else if (xfered
== 0 && errno
== 0)
5487 /* Only handle flash writes. */
5488 if (writebuf
!= NULL
)
5494 case TARGET_OBJECT_FLASH
:
5495 xfered
= remote_flash_write (ops
, offset
, len
, writebuf
);
5499 else if (xfered
== 0 && errno
== 0)
5509 /* Map pre-existing objects onto letters. DO NOT do this for new
5510 objects!!! Instead specify new query packets. */
5513 case TARGET_OBJECT_AVR
:
5517 case TARGET_OBJECT_AUXV
:
5518 gdb_assert (annex
== NULL
);
5519 return remote_read_qxfer (ops
, "auxv", annex
, readbuf
, offset
, len
,
5520 &remote_protocol_packets
[PACKET_qXfer_auxv
]);
5522 case TARGET_OBJECT_MEMORY_MAP
:
5523 gdb_assert (annex
== NULL
);
5524 return remote_read_qxfer (ops
, "memory-map", annex
, readbuf
, offset
, len
,
5525 &remote_protocol_packets
[PACKET_qXfer_memory_map
]);
5531 /* Note: a zero OFFSET and LEN can be used to query the minimum
5533 if (offset
== 0 && len
== 0)
5534 return (get_remote_packet_size ());
5535 /* Minimum outbuf size is get_remote_packet_size (). If LEN is not
5536 large enough let the caller deal with it. */
5537 if (len
< get_remote_packet_size ())
5539 len
= get_remote_packet_size ();
5541 /* Except for querying the minimum buffer size, target must be open. */
5543 error (_("remote query is only available after target open"));
5545 gdb_assert (annex
!= NULL
);
5546 gdb_assert (readbuf
!= NULL
);
5552 /* We used one buffer char for the remote protocol q command and
5553 another for the query type. As the remote protocol encapsulation
5554 uses 4 chars plus one extra in case we are debugging
5555 (remote_debug), we have PBUFZIZ - 7 left to pack the query
5558 while (annex
[i
] && (i
< (get_remote_packet_size () - 8)))
5560 /* Bad caller may have sent forbidden characters. */
5561 gdb_assert (isprint (annex
[i
]) && annex
[i
] != '$' && annex
[i
] != '#');
5566 gdb_assert (annex
[i
] == '\0');
5568 i
= putpkt (rs
->buf
);
5572 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5573 strcpy ((char *) readbuf
, rs
->buf
);
5575 return strlen ((char *) readbuf
);
5579 remote_rcmd (char *command
,
5580 struct ui_file
*outbuf
)
5582 struct remote_state
*rs
= get_remote_state ();
5586 error (_("remote rcmd is only available after target open"));
5588 /* Send a NULL command across as an empty command. */
5589 if (command
== NULL
)
5592 /* The query prefix. */
5593 strcpy (rs
->buf
, "qRcmd,");
5594 p
= strchr (rs
->buf
, '\0');
5596 if ((strlen (rs
->buf
) + strlen (command
) * 2 + 8/*misc*/) > get_remote_packet_size ())
5597 error (_("\"monitor\" command ``%s'' is too long."), command
);
5599 /* Encode the actual command. */
5600 bin2hex ((gdb_byte
*) command
, p
, 0);
5602 if (putpkt (rs
->buf
) < 0)
5603 error (_("Communication problem with target."));
5605 /* get/display the response */
5610 /* XXX - see also tracepoint.c:remote_get_noisy_reply(). */
5612 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5615 error (_("Target does not support this command."));
5616 if (buf
[0] == 'O' && buf
[1] != 'K')
5618 remote_console_output (buf
+ 1); /* 'O' message from stub. */
5621 if (strcmp (buf
, "OK") == 0)
5623 if (strlen (buf
) == 3 && buf
[0] == 'E'
5624 && isdigit (buf
[1]) && isdigit (buf
[2]))
5626 error (_("Protocol error with Rcmd"));
5628 for (p
= buf
; p
[0] != '\0' && p
[1] != '\0'; p
+= 2)
5630 char c
= (fromhex (p
[0]) << 4) + fromhex (p
[1]);
5631 fputc_unfiltered (c
, outbuf
);
5637 static VEC(mem_region_s
) *
5638 remote_memory_map (struct target_ops
*ops
)
5640 VEC(mem_region_s
) *result
= NULL
;
5641 char *text
= target_read_stralloc (¤t_target
,
5642 TARGET_OBJECT_MEMORY_MAP
, NULL
);
5646 struct cleanup
*back_to
= make_cleanup (xfree
, text
);
5647 result
= parse_memory_map (text
);
5648 do_cleanups (back_to
);
5655 packet_command (char *args
, int from_tty
)
5657 struct remote_state
*rs
= get_remote_state ();
5660 error (_("command can only be used with remote target"));
5663 error (_("remote-packet command requires packet text as argument"));
5665 puts_filtered ("sending: ");
5666 print_packet (args
);
5667 puts_filtered ("\n");
5670 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5671 puts_filtered ("received: ");
5672 print_packet (rs
->buf
);
5673 puts_filtered ("\n");
5677 /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */
5679 static void display_thread_info (struct gdb_ext_thread_info
*info
);
5681 static void threadset_test_cmd (char *cmd
, int tty
);
5683 static void threadalive_test (char *cmd
, int tty
);
5685 static void threadlist_test_cmd (char *cmd
, int tty
);
5687 int get_and_display_threadinfo (threadref
*ref
);
5689 static void threadinfo_test_cmd (char *cmd
, int tty
);
5691 static int thread_display_step (threadref
*ref
, void *context
);
5693 static void threadlist_update_test_cmd (char *cmd
, int tty
);
5695 static void init_remote_threadtests (void);
5697 #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */
5700 threadset_test_cmd (char *cmd
, int tty
)
5702 int sample_thread
= SAMPLE_THREAD
;
5704 printf_filtered (_("Remote threadset test\n"));
5705 set_thread (sample_thread
, 1);
5710 threadalive_test (char *cmd
, int tty
)
5712 int sample_thread
= SAMPLE_THREAD
;
5714 if (remote_thread_alive (pid_to_ptid (sample_thread
)))
5715 printf_filtered ("PASS: Thread alive test\n");
5717 printf_filtered ("FAIL: Thread alive test\n");
5720 void output_threadid (char *title
, threadref
*ref
);
5723 output_threadid (char *title
, threadref
*ref
)
5727 pack_threadid (&hexid
[0], ref
); /* Convert threead id into hex. */
5729 printf_filtered ("%s %s\n", title
, (&hexid
[0]));
5733 threadlist_test_cmd (char *cmd
, int tty
)
5736 threadref nextthread
;
5737 int done
, result_count
;
5738 threadref threadlist
[3];
5740 printf_filtered ("Remote Threadlist test\n");
5741 if (!remote_get_threadlist (startflag
, &nextthread
, 3, &done
,
5742 &result_count
, &threadlist
[0]))
5743 printf_filtered ("FAIL: threadlist test\n");
5746 threadref
*scan
= threadlist
;
5747 threadref
*limit
= scan
+ result_count
;
5749 while (scan
< limit
)
5750 output_threadid (" thread ", scan
++);
5755 display_thread_info (struct gdb_ext_thread_info
*info
)
5757 output_threadid ("Threadid: ", &info
->threadid
);
5758 printf_filtered ("Name: %s\n ", info
->shortname
);
5759 printf_filtered ("State: %s\n", info
->display
);
5760 printf_filtered ("other: %s\n\n", info
->more_display
);
5764 get_and_display_threadinfo (threadref
*ref
)
5768 struct gdb_ext_thread_info threadinfo
;
5770 set
= TAG_THREADID
| TAG_EXISTS
| TAG_THREADNAME
5771 | TAG_MOREDISPLAY
| TAG_DISPLAY
;
5772 if (0 != (result
= remote_get_threadinfo (ref
, set
, &threadinfo
)))
5773 display_thread_info (&threadinfo
);
5778 threadinfo_test_cmd (char *cmd
, int tty
)
5780 int athread
= SAMPLE_THREAD
;
5784 int_to_threadref (&thread
, athread
);
5785 printf_filtered ("Remote Threadinfo test\n");
5786 if (!get_and_display_threadinfo (&thread
))
5787 printf_filtered ("FAIL cannot get thread info\n");
5791 thread_display_step (threadref
*ref
, void *context
)
5793 /* output_threadid(" threadstep ",ref); *//* simple test */
5794 return get_and_display_threadinfo (ref
);
5798 threadlist_update_test_cmd (char *cmd
, int tty
)
5800 printf_filtered ("Remote Threadlist update test\n");
5801 remote_threadlist_iterator (thread_display_step
, 0, CRAZY_MAX_THREADS
);
5805 init_remote_threadtests (void)
5807 add_com ("tlist", class_obscure
, threadlist_test_cmd
, _("\
5808 Fetch and print the remote list of thread identifiers, one pkt only"));
5809 add_com ("tinfo", class_obscure
, threadinfo_test_cmd
,
5810 _("Fetch and display info about one thread"));
5811 add_com ("tset", class_obscure
, threadset_test_cmd
,
5812 _("Test setting to a different thread"));
5813 add_com ("tupd", class_obscure
, threadlist_update_test_cmd
,
5814 _("Iterate through updating all remote thread info"));
5815 add_com ("talive", class_obscure
, threadalive_test
,
5816 _(" Remote thread alive test "));
5821 /* Convert a thread ID to a string. Returns the string in a static
5825 remote_pid_to_str (ptid_t ptid
)
5827 static char buf
[32];
5829 xsnprintf (buf
, sizeof buf
, "Thread %d", ptid_get_pid (ptid
));
5833 /* Get the address of the thread local variable in OBJFILE which is
5834 stored at OFFSET within the thread local storage for thread PTID. */
5837 remote_get_thread_local_address (ptid_t ptid
, CORE_ADDR lm
, CORE_ADDR offset
)
5839 if (remote_protocol_packets
[PACKET_qGetTLSAddr
].support
!= PACKET_DISABLE
)
5841 struct remote_state
*rs
= get_remote_state ();
5843 enum packet_result result
;
5845 strcpy (p
, "qGetTLSAddr:");
5847 p
+= hexnumstr (p
, PIDGET (ptid
));
5849 p
+= hexnumstr (p
, offset
);
5851 p
+= hexnumstr (p
, lm
);
5855 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5856 result
= packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_qGetTLSAddr
]);
5857 if (result
== PACKET_OK
)
5861 unpack_varlen_hex (rs
->buf
, &result
);
5864 else if (result
== PACKET_UNKNOWN
)
5865 throw_error (TLS_GENERIC_ERROR
,
5866 _("Remote target doesn't support qGetTLSAddr packet"));
5868 throw_error (TLS_GENERIC_ERROR
,
5869 _("Remote target failed to process qGetTLSAddr request"));
5872 throw_error (TLS_GENERIC_ERROR
,
5873 _("TLS not supported or disabled on this target"));
5879 init_remote_ops (void)
5881 remote_ops
.to_shortname
= "remote";
5882 remote_ops
.to_longname
= "Remote serial target in gdb-specific protocol";
5884 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
5885 Specify the serial device it is connected to\n\
5886 (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).";
5887 remote_ops
.to_open
= remote_open
;
5888 remote_ops
.to_close
= remote_close
;
5889 remote_ops
.to_detach
= remote_detach
;
5890 remote_ops
.to_disconnect
= remote_disconnect
;
5891 remote_ops
.to_resume
= remote_resume
;
5892 remote_ops
.to_wait
= remote_wait
;
5893 remote_ops
.to_fetch_registers
= remote_fetch_registers
;
5894 remote_ops
.to_store_registers
= remote_store_registers
;
5895 remote_ops
.to_prepare_to_store
= remote_prepare_to_store
;
5896 remote_ops
.deprecated_xfer_memory
= remote_xfer_memory
;
5897 remote_ops
.to_files_info
= remote_files_info
;
5898 remote_ops
.to_insert_breakpoint
= remote_insert_breakpoint
;
5899 remote_ops
.to_remove_breakpoint
= remote_remove_breakpoint
;
5900 remote_ops
.to_stopped_by_watchpoint
= remote_stopped_by_watchpoint
;
5901 remote_ops
.to_stopped_data_address
= remote_stopped_data_address
;
5902 remote_ops
.to_can_use_hw_breakpoint
= remote_check_watch_resources
;
5903 remote_ops
.to_insert_hw_breakpoint
= remote_insert_hw_breakpoint
;
5904 remote_ops
.to_remove_hw_breakpoint
= remote_remove_hw_breakpoint
;
5905 remote_ops
.to_insert_watchpoint
= remote_insert_watchpoint
;
5906 remote_ops
.to_remove_watchpoint
= remote_remove_watchpoint
;
5907 remote_ops
.to_kill
= remote_kill
;
5908 remote_ops
.to_load
= generic_load
;
5909 remote_ops
.to_mourn_inferior
= remote_mourn
;
5910 remote_ops
.to_thread_alive
= remote_thread_alive
;
5911 remote_ops
.to_find_new_threads
= remote_threads_info
;
5912 remote_ops
.to_pid_to_str
= remote_pid_to_str
;
5913 remote_ops
.to_extra_thread_info
= remote_threads_extra_info
;
5914 remote_ops
.to_stop
= remote_stop
;
5915 remote_ops
.to_xfer_partial
= remote_xfer_partial
;
5916 remote_ops
.to_rcmd
= remote_rcmd
;
5917 remote_ops
.to_get_thread_local_address
= remote_get_thread_local_address
;
5918 remote_ops
.to_stratum
= process_stratum
;
5919 remote_ops
.to_has_all_memory
= 1;
5920 remote_ops
.to_has_memory
= 1;
5921 remote_ops
.to_has_stack
= 1;
5922 remote_ops
.to_has_registers
= 1;
5923 remote_ops
.to_has_execution
= 1;
5924 remote_ops
.to_has_thread_control
= tc_schedlock
; /* can lock scheduler */
5925 remote_ops
.to_magic
= OPS_MAGIC
;
5926 remote_ops
.to_memory_map
= remote_memory_map
;
5927 remote_ops
.to_flash_erase
= remote_flash_erase
;
5928 remote_ops
.to_flash_done
= remote_flash_done
;
5931 /* Set up the extended remote vector by making a copy of the standard
5932 remote vector and adding to it. */
5935 init_extended_remote_ops (void)
5937 extended_remote_ops
= remote_ops
;
5939 extended_remote_ops
.to_shortname
= "extended-remote";
5940 extended_remote_ops
.to_longname
=
5941 "Extended remote serial target in gdb-specific protocol";
5942 extended_remote_ops
.to_doc
=
5943 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
5944 Specify the serial device it is connected to (e.g. /dev/ttya).",
5945 extended_remote_ops
.to_open
= extended_remote_open
;
5946 extended_remote_ops
.to_create_inferior
= extended_remote_create_inferior
;
5947 extended_remote_ops
.to_mourn_inferior
= extended_remote_mourn
;
5951 remote_can_async_p (void)
5953 /* We're async whenever the serial device is. */
5954 return (current_target
.to_async_mask_value
) && serial_can_async_p (remote_desc
);
5958 remote_is_async_p (void)
5960 /* We're async whenever the serial device is. */
5961 return (current_target
.to_async_mask_value
) && serial_is_async_p (remote_desc
);
5964 /* Pass the SERIAL event on and up to the client. One day this code
5965 will be able to delay notifying the client of an event until the
5966 point where an entire packet has been received. */
5968 static void (*async_client_callback
) (enum inferior_event_type event_type
,
5970 static void *async_client_context
;
5971 static serial_event_ftype remote_async_serial_handler
;
5974 remote_async_serial_handler (struct serial
*scb
, void *context
)
5976 /* Don't propogate error information up to the client. Instead let
5977 the client find out about the error by querying the target. */
5978 async_client_callback (INF_REG_EVENT
, async_client_context
);
5982 remote_async (void (*callback
) (enum inferior_event_type event_type
,
5983 void *context
), void *context
)
5985 if (current_target
.to_async_mask_value
== 0)
5986 internal_error (__FILE__
, __LINE__
,
5987 _("Calling remote_async when async is masked"));
5989 if (callback
!= NULL
)
5991 serial_async (remote_desc
, remote_async_serial_handler
, NULL
);
5992 async_client_callback
= callback
;
5993 async_client_context
= context
;
5996 serial_async (remote_desc
, NULL
, NULL
);
5999 /* Target async and target extended-async.
6001 This are temporary targets, until it is all tested. Eventually
6002 async support will be incorporated int the usual 'remote'
6006 init_remote_async_ops (void)
6008 remote_async_ops
.to_shortname
= "async";
6009 remote_async_ops
.to_longname
=
6010 "Remote serial target in async version of the gdb-specific protocol";
6011 remote_async_ops
.to_doc
=
6012 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
6013 Specify the serial device it is connected to (e.g. /dev/ttya).";
6014 remote_async_ops
.to_open
= remote_async_open
;
6015 remote_async_ops
.to_close
= remote_close
;
6016 remote_async_ops
.to_detach
= remote_detach
;
6017 remote_async_ops
.to_disconnect
= remote_disconnect
;
6018 remote_async_ops
.to_resume
= remote_async_resume
;
6019 remote_async_ops
.to_wait
= remote_async_wait
;
6020 remote_async_ops
.to_fetch_registers
= remote_fetch_registers
;
6021 remote_async_ops
.to_store_registers
= remote_store_registers
;
6022 remote_async_ops
.to_prepare_to_store
= remote_prepare_to_store
;
6023 remote_async_ops
.deprecated_xfer_memory
= remote_xfer_memory
;
6024 remote_async_ops
.to_files_info
= remote_files_info
;
6025 remote_async_ops
.to_insert_breakpoint
= remote_insert_breakpoint
;
6026 remote_async_ops
.to_remove_breakpoint
= remote_remove_breakpoint
;
6027 remote_async_ops
.to_can_use_hw_breakpoint
= remote_check_watch_resources
;
6028 remote_async_ops
.to_insert_hw_breakpoint
= remote_insert_hw_breakpoint
;
6029 remote_async_ops
.to_remove_hw_breakpoint
= remote_remove_hw_breakpoint
;
6030 remote_async_ops
.to_insert_watchpoint
= remote_insert_watchpoint
;
6031 remote_async_ops
.to_remove_watchpoint
= remote_remove_watchpoint
;
6032 remote_async_ops
.to_stopped_by_watchpoint
= remote_stopped_by_watchpoint
;
6033 remote_async_ops
.to_stopped_data_address
= remote_stopped_data_address
;
6034 remote_async_ops
.to_terminal_inferior
= remote_async_terminal_inferior
;
6035 remote_async_ops
.to_terminal_ours
= remote_async_terminal_ours
;
6036 remote_async_ops
.to_kill
= remote_async_kill
;
6037 remote_async_ops
.to_load
= generic_load
;
6038 remote_async_ops
.to_mourn_inferior
= remote_async_mourn
;
6039 remote_async_ops
.to_thread_alive
= remote_thread_alive
;
6040 remote_async_ops
.to_find_new_threads
= remote_threads_info
;
6041 remote_async_ops
.to_pid_to_str
= remote_pid_to_str
;
6042 remote_async_ops
.to_extra_thread_info
= remote_threads_extra_info
;
6043 remote_async_ops
.to_stop
= remote_stop
;
6044 remote_async_ops
.to_xfer_partial
= remote_xfer_partial
;
6045 remote_async_ops
.to_rcmd
= remote_rcmd
;
6046 remote_async_ops
.to_stratum
= process_stratum
;
6047 remote_async_ops
.to_has_all_memory
= 1;
6048 remote_async_ops
.to_has_memory
= 1;
6049 remote_async_ops
.to_has_stack
= 1;
6050 remote_async_ops
.to_has_registers
= 1;
6051 remote_async_ops
.to_has_execution
= 1;
6052 remote_async_ops
.to_has_thread_control
= tc_schedlock
; /* can lock scheduler */
6053 remote_async_ops
.to_can_async_p
= remote_can_async_p
;
6054 remote_async_ops
.to_is_async_p
= remote_is_async_p
;
6055 remote_async_ops
.to_async
= remote_async
;
6056 remote_async_ops
.to_async_mask_value
= 1;
6057 remote_async_ops
.to_magic
= OPS_MAGIC
;
6058 remote_async_ops
.to_memory_map
= remote_memory_map
;
6059 remote_async_ops
.to_flash_erase
= remote_flash_erase
;
6060 remote_async_ops
.to_flash_done
= remote_flash_done
;
6063 /* Set up the async extended remote vector by making a copy of the standard
6064 remote vector and adding to it. */
6067 init_extended_async_remote_ops (void)
6069 extended_async_remote_ops
= remote_async_ops
;
6071 extended_async_remote_ops
.to_shortname
= "extended-async";
6072 extended_async_remote_ops
.to_longname
=
6073 "Extended remote serial target in async gdb-specific protocol";
6074 extended_async_remote_ops
.to_doc
=
6075 "Use a remote computer via a serial line, using an async gdb-specific protocol.\n\
6076 Specify the serial device it is connected to (e.g. /dev/ttya).",
6077 extended_async_remote_ops
.to_open
= extended_remote_async_open
;
6078 extended_async_remote_ops
.to_create_inferior
= extended_remote_async_create_inferior
;
6079 extended_async_remote_ops
.to_mourn_inferior
= extended_remote_mourn
;
6083 set_remote_cmd (char *args
, int from_tty
)
6088 show_remote_cmd (char *args
, int from_tty
)
6090 /* We can't just use cmd_show_list here, because we want to skip
6091 the redundant "show remote Z-packet". */
6092 struct cleanup
*showlist_chain
;
6093 struct cmd_list_element
*list
= remote_show_cmdlist
;
6095 showlist_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "showlist");
6096 for (; list
!= NULL
; list
= list
->next
)
6097 if (strcmp (list
->name
, "Z-packet") == 0)
6099 else if (list
->type
== show_cmd
)
6101 struct cleanup
*option_chain
6102 = make_cleanup_ui_out_tuple_begin_end (uiout
, "option");
6103 ui_out_field_string (uiout
, "name", list
->name
);
6104 ui_out_text (uiout
, ": ");
6105 do_setshow_command ((char *) NULL
, from_tty
, list
);
6106 /* Close the tuple. */
6107 do_cleanups (option_chain
);
6112 build_remote_gdbarch_data (void)
6114 remote_address_size
= TARGET_ADDR_BIT
;
6117 /* Saved pointer to previous owner of the new_objfile event. */
6118 static void (*remote_new_objfile_chain
) (struct objfile
*);
6120 /* Function to be called whenever a new objfile (shlib) is detected. */
6122 remote_new_objfile (struct objfile
*objfile
)
6124 if (remote_desc
!= 0) /* Have a remote connection. */
6126 remote_check_symbols (objfile
);
6128 /* Call predecessor on chain, if any. */
6129 if (remote_new_objfile_chain
)
6130 remote_new_objfile_chain (objfile
);
6134 _initialize_remote (void)
6136 struct remote_state
*rs
;
6138 /* architecture specific data */
6139 remote_gdbarch_data_handle
=
6140 gdbarch_data_register_post_init (init_remote_state
);
6142 /* Old tacky stuff. NOTE: This comes after the remote protocol so
6143 that the remote protocol has been initialized. */
6144 DEPRECATED_REGISTER_GDBARCH_SWAP (remote_address_size
);
6145 deprecated_register_gdbarch_swap (NULL
, 0, build_remote_gdbarch_data
);
6147 /* Initialize the per-target state. At the moment there is only one
6148 of these, not one per target. Only one target is active at a
6149 time. The default buffer size is unimportant; it will be expanded
6150 whenever a larger buffer is needed. */
6151 rs
= get_remote_state_raw ();
6153 rs
->buf
= xmalloc (rs
->buf_size
);
6156 add_target (&remote_ops
);
6158 init_extended_remote_ops ();
6159 add_target (&extended_remote_ops
);
6161 init_remote_async_ops ();
6162 add_target (&remote_async_ops
);
6164 init_extended_async_remote_ops ();
6165 add_target (&extended_async_remote_ops
);
6167 /* Hook into new objfile notification. */
6168 remote_new_objfile_chain
= deprecated_target_new_objfile_hook
;
6169 deprecated_target_new_objfile_hook
= remote_new_objfile
;
6172 init_remote_threadtests ();
6175 /* set/show remote ... */
6177 add_prefix_cmd ("remote", class_maintenance
, set_remote_cmd
, _("\
6178 Remote protocol specific variables\n\
6179 Configure various remote-protocol specific variables such as\n\
6180 the packets being used"),
6181 &remote_set_cmdlist
, "set remote ",
6182 0 /* allow-unknown */, &setlist
);
6183 add_prefix_cmd ("remote", class_maintenance
, show_remote_cmd
, _("\
6184 Remote protocol specific variables\n\
6185 Configure various remote-protocol specific variables such as\n\
6186 the packets being used"),
6187 &remote_show_cmdlist
, "show remote ",
6188 0 /* allow-unknown */, &showlist
);
6190 add_cmd ("compare-sections", class_obscure
, compare_sections_command
, _("\
6191 Compare section data on target to the exec file.\n\
6192 Argument is a single section name (default: all loaded sections)."),
6195 add_cmd ("packet", class_maintenance
, packet_command
, _("\
6196 Send an arbitrary packet to a remote target.\n\
6197 maintenance packet TEXT\n\
6198 If GDB is talking to an inferior via the GDB serial protocol, then\n\
6199 this command sends the string TEXT to the inferior, and displays the\n\
6200 response packet. GDB supplies the initial `$' character, and the\n\
6201 terminating `#' character and checksum."),
6204 add_setshow_boolean_cmd ("remotebreak", no_class
, &remote_break
, _("\
6205 Set whether to send break if interrupted."), _("\
6206 Show whether to send break if interrupted."), _("\
6207 If set, a break, instead of a cntrl-c, is sent to the remote target."),
6208 NULL
, NULL
, /* FIXME: i18n: Whether to send break if interrupted is %s. */
6209 &setlist
, &showlist
);
6211 /* Install commands for configuring memory read/write packets. */
6213 add_cmd ("remotewritesize", no_class
, set_memory_write_packet_size
, _("\
6214 Set the maximum number of bytes per memory write packet (deprecated)."),
6216 add_cmd ("remotewritesize", no_class
, show_memory_write_packet_size
, _("\
6217 Show the maximum number of bytes per memory write packet (deprecated)."),
6219 add_cmd ("memory-write-packet-size", no_class
,
6220 set_memory_write_packet_size
, _("\
6221 Set the maximum number of bytes per memory-write packet.\n\
6222 Specify the number of bytes in a packet or 0 (zero) for the\n\
6223 default packet size. The actual limit is further reduced\n\
6224 dependent on the target. Specify ``fixed'' to disable the\n\
6225 further restriction and ``limit'' to enable that restriction."),
6226 &remote_set_cmdlist
);
6227 add_cmd ("memory-read-packet-size", no_class
,
6228 set_memory_read_packet_size
, _("\
6229 Set the maximum number of bytes per memory-read 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-write-packet-size", no_class
,
6236 show_memory_write_packet_size
,
6237 _("Show the maximum number of bytes per memory-write packet."),
6238 &remote_show_cmdlist
);
6239 add_cmd ("memory-read-packet-size", no_class
,
6240 show_memory_read_packet_size
,
6241 _("Show the maximum number of bytes per memory-read packet."),
6242 &remote_show_cmdlist
);
6244 add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class
,
6245 &remote_hw_watchpoint_limit
, _("\
6246 Set the maximum number of target hardware watchpoints."), _("\
6247 Show the maximum number of target hardware watchpoints."), _("\
6248 Specify a negative limit for unlimited."),
6249 NULL
, NULL
, /* FIXME: i18n: The maximum number of target hardware watchpoints is %s. */
6250 &remote_set_cmdlist
, &remote_show_cmdlist
);
6251 add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class
,
6252 &remote_hw_breakpoint_limit
, _("\
6253 Set the maximum number of target hardware breakpoints."), _("\
6254 Show the maximum number of target hardware breakpoints."), _("\
6255 Specify a negative limit for unlimited."),
6256 NULL
, NULL
, /* FIXME: i18n: The maximum number of target hardware breakpoints is %s. */
6257 &remote_set_cmdlist
, &remote_show_cmdlist
);
6259 add_setshow_integer_cmd ("remoteaddresssize", class_obscure
,
6260 &remote_address_size
, _("\
6261 Set the maximum size of the address (in bits) in a memory packet."), _("\
6262 Show the maximum size of the address (in bits) in a memory packet."), NULL
,
6264 NULL
, /* FIXME: i18n: */
6265 &setlist
, &showlist
);
6267 add_packet_config_cmd (&remote_protocol_packets
[PACKET_X
],
6268 "X", "binary-download", 1);
6270 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vCont
],
6271 "vCont", "verbose-resume", 0);
6273 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSymbol
],
6274 "qSymbol", "symbol-lookup", 0);
6276 add_packet_config_cmd (&remote_protocol_packets
[PACKET_P
],
6277 "P", "set-register", 1);
6279 add_packet_config_cmd (&remote_protocol_packets
[PACKET_p
],
6280 "p", "fetch-register", 1);
6282 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z0
],
6283 "Z0", "software-breakpoint", 0);
6285 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z1
],
6286 "Z1", "hardware-breakpoint", 0);
6288 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z2
],
6289 "Z2", "write-watchpoint", 0);
6291 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z3
],
6292 "Z3", "read-watchpoint", 0);
6294 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z4
],
6295 "Z4", "access-watchpoint", 0);
6297 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_auxv
],
6298 "qXfer:auxv:read", "read-aux-vector", 0);
6300 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_memory_map
],
6301 "qXfer:memory-map:read", "memory-map", 0);
6303 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qGetTLSAddr
],
6304 "qGetTLSAddr", "get-thread-local-storage-address",
6307 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSupported
],
6308 "qSupported", "supported-packets", 0);
6310 /* Keep the old ``set remote Z-packet ...'' working. Each individual
6311 Z sub-packet has its own set and show commands, but users may
6312 have sets to this variable in their .gdbinit files (or in their
6314 add_setshow_auto_boolean_cmd ("Z-packet", class_obscure
,
6315 &remote_Z_packet_detect
, _("\
6316 Set use of remote protocol `Z' packets"), _("\
6317 Show use of remote protocol `Z' packets "), _("\
6318 When set, GDB will attempt to use the remote breakpoint and watchpoint\n\
6320 set_remote_protocol_Z_packet_cmd
,
6321 show_remote_protocol_Z_packet_cmd
, /* FIXME: i18n: Use of remote protocol `Z' packets is %s. */
6322 &remote_set_cmdlist
, &remote_show_cmdlist
);
6324 /* Eventually initialize fileio. See fileio.c */
6325 initialize_remote_fileio (remote_set_cmdlist
, remote_show_cmdlist
);