1 /* Remote target communications for serial-line targets in custom GDB protocol
3 Copyright (C) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997,
4 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
5 2010 Free Software Foundation, Inc.
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>. */
22 /* See the GDB User Guide for details of the GDB remote protocol. */
25 #include "gdb_string.h"
31 #include "exceptions.h"
33 /*#include "terminal.h" */
36 #include "gdb-stabs.h"
37 #include "gdbthread.h"
41 #include "gdb_assert.h"
44 #include "cli/cli-decode.h"
45 #include "cli/cli-setshow.h"
46 #include "target-descriptions.h"
51 #include "event-loop.h"
52 #include "event-top.h"
58 #include "gdbcore.h" /* for exec_bfd */
60 #include "remote-fileio.h"
61 #include "gdb/fileio.h"
63 #include "xml-support.h"
65 #include "memory-map.h"
67 #include "tracepoint.h"
71 /* temp hacks for tracepoint encoding migration */
72 static char *target_buf
;
73 static long target_buf_size
;
75 encode_actions (struct breakpoint
*t
, char ***tdp_actions
,
76 char ***stepping_actions
);
78 /* The size to align memory write packets, when practical. The protocol
79 does not guarantee any alignment, and gdb will generate short
80 writes and unaligned writes, but even as a best-effort attempt this
81 can improve bulk transfers. For instance, if a write is misaligned
82 relative to the target's data bus, the stub may need to make an extra
83 round trip fetching data from the target. This doesn't make a
84 huge difference, but it's easy to do, so we try to be helpful.
86 The alignment chosen is arbitrary; usually data bus width is
87 important here, not the possibly larger cache line size. */
88 enum { REMOTE_ALIGN_WRITES
= 16 };
90 /* Prototypes for local functions. */
91 static void cleanup_sigint_signal_handler (void *dummy
);
92 static void initialize_sigint_signal_handler (void);
93 static int getpkt_sane (char **buf
, long *sizeof_buf
, int forever
);
94 static int getpkt_or_notif_sane (char **buf
, long *sizeof_buf
,
97 static void handle_remote_sigint (int);
98 static void handle_remote_sigint_twice (int);
99 static void async_remote_interrupt (gdb_client_data
);
100 void async_remote_interrupt_twice (gdb_client_data
);
102 static void remote_files_info (struct target_ops
*ignore
);
104 static void remote_prepare_to_store (struct regcache
*regcache
);
106 static void remote_open (char *name
, int from_tty
);
108 static void extended_remote_open (char *name
, int from_tty
);
110 static void remote_open_1 (char *, int, struct target_ops
*, int extended_p
);
112 static void remote_close (int quitting
);
114 static void remote_mourn (struct target_ops
*ops
);
116 static void extended_remote_restart (void);
118 static void extended_remote_mourn (struct target_ops
*);
120 static void remote_mourn_1 (struct target_ops
*);
122 static void remote_send (char **buf
, long *sizeof_buf_p
);
124 static int readchar (int timeout
);
126 static void remote_kill (struct target_ops
*ops
);
128 static int tohex (int nib
);
130 static int remote_can_async_p (void);
132 static int remote_is_async_p (void);
134 static void remote_async (void (*callback
) (enum inferior_event_type event_type
,
135 void *context
), void *context
);
137 static int remote_async_mask (int new_mask
);
139 static void remote_detach (struct target_ops
*ops
, char *args
, int from_tty
);
141 static void remote_interrupt (int signo
);
143 static void remote_interrupt_twice (int signo
);
145 static void interrupt_query (void);
147 static void set_general_thread (struct ptid ptid
);
148 static void set_continue_thread (struct ptid ptid
);
150 static void get_offsets (void);
152 static void skip_frame (void);
154 static long read_frame (char **buf_p
, long *sizeof_buf
);
156 static int hexnumlen (ULONGEST num
);
158 static void init_remote_ops (void);
160 static void init_extended_remote_ops (void);
162 static void remote_stop (ptid_t
);
164 static int ishex (int ch
, int *val
);
166 static int stubhex (int ch
);
168 static int hexnumstr (char *, ULONGEST
);
170 static int hexnumnstr (char *, ULONGEST
, int);
172 static CORE_ADDR
remote_address_masked (CORE_ADDR
);
174 static void print_packet (char *);
176 static unsigned long crc32 (unsigned char *, int, unsigned int);
178 static void compare_sections_command (char *, int);
180 static void packet_command (char *, int);
182 static int stub_unpack_int (char *buff
, int fieldlength
);
184 static ptid_t
remote_current_thread (ptid_t oldptid
);
186 static void remote_find_new_threads (void);
188 static void record_currthread (ptid_t currthread
);
190 static int fromhex (int a
);
192 extern int hex2bin (const char *hex
, gdb_byte
*bin
, int count
);
194 extern int bin2hex (const gdb_byte
*bin
, char *hex
, int count
);
196 static int putpkt_binary (char *buf
, int cnt
);
198 static void check_binary_download (CORE_ADDR addr
);
200 struct packet_config
;
202 static void show_packet_config_cmd (struct packet_config
*config
);
204 static void update_packet_config (struct packet_config
*config
);
206 static void set_remote_protocol_packet_cmd (char *args
, int from_tty
,
207 struct cmd_list_element
*c
);
209 static void show_remote_protocol_packet_cmd (struct ui_file
*file
,
211 struct cmd_list_element
*c
,
214 static char *write_ptid (char *buf
, const char *endbuf
, ptid_t ptid
);
215 static ptid_t
read_ptid (char *buf
, char **obuf
);
218 static int remote_get_trace_status (struct trace_status
*ts
);
220 static int remote_upload_tracepoints (struct uploaded_tp
**utpp
);
222 static int remote_upload_trace_state_variables (struct uploaded_tsv
**utsvp
);
224 static void remote_query_supported (void);
226 static void remote_check_symbols (struct objfile
*objfile
);
228 void _initialize_remote (void);
231 static struct stop_reply
*stop_reply_xmalloc (void);
232 static void stop_reply_xfree (struct stop_reply
*);
233 static void do_stop_reply_xfree (void *arg
);
234 static void remote_parse_stop_reply (char *buf
, struct stop_reply
*);
235 static void push_stop_reply (struct stop_reply
*);
236 static void remote_get_pending_stop_replies (void);
237 static void discard_pending_stop_replies (int pid
);
238 static int peek_stop_reply (ptid_t ptid
);
240 static void remote_async_inferior_event_handler (gdb_client_data
);
241 static void remote_async_get_pending_events_handler (gdb_client_data
);
243 static void remote_terminal_ours (void);
245 static int remote_read_description_p (struct target_ops
*target
);
247 /* The non-stop remote protocol provisions for one pending stop reply.
248 This is where we keep it until it is acknowledged. */
250 static struct stop_reply
*pending_stop_reply
= NULL
;
254 static struct cmd_list_element
*remote_cmdlist
;
256 /* For "set remote" and "show remote". */
258 static struct cmd_list_element
*remote_set_cmdlist
;
259 static struct cmd_list_element
*remote_show_cmdlist
;
261 /* Description of the remote protocol state for the currently
262 connected target. This is per-target state, and independent of the
263 selected architecture. */
267 /* A buffer to use for incoming packets, and its current size. The
268 buffer is grown dynamically for larger incoming packets.
269 Outgoing packets may also be constructed in this buffer.
270 BUF_SIZE is always at least REMOTE_PACKET_SIZE;
271 REMOTE_PACKET_SIZE should be used to limit the length of outgoing
276 /* If we negotiated packet size explicitly (and thus can bypass
277 heuristics for the largest packet size that will not overflow
278 a buffer in the stub), this will be set to that packet size.
279 Otherwise zero, meaning to use the guessed size. */
280 long explicit_packet_size
;
282 /* remote_wait is normally called when the target is running and
283 waits for a stop reply packet. But sometimes we need to call it
284 when the target is already stopped. We can send a "?" packet
285 and have remote_wait read the response. Or, if we already have
286 the response, we can stash it in BUF and tell remote_wait to
287 skip calling getpkt. This flag is set when BUF contains a
288 stop reply packet and the target is not waiting. */
289 int cached_wait_status
;
291 /* True, if in no ack mode. That is, neither GDB nor the stub will
292 expect acks from each other. The connection is assumed to be
296 /* True if we're connected in extended remote mode. */
299 /* True if the stub reported support for multi-process
301 int multi_process_aware
;
303 /* True if we resumed the target and we're waiting for the target to
304 stop. In the mean time, we can't start another command/query.
305 The remote server wouldn't be ready to process it, so we'd
306 timeout waiting for a reply that would never come and eventually
307 we'd close the connection. This can happen in asynchronous mode
308 because we allow GDB commands while the target is running. */
309 int waiting_for_stop_reply
;
311 /* True if the stub reports support for non-stop mode. */
314 /* True if the stub reports support for vCont;t. */
317 /* True if the stub reports support for conditional tracepoints. */
318 int cond_tracepoints
;
320 /* True if the stub reports support for fast tracepoints. */
321 int fast_tracepoints
;
323 /* True if the stub can continue running a trace while GDB is
325 int disconnected_tracing
;
327 /* Nonzero if the user has pressed Ctrl-C, but the target hasn't
328 responded to that. */
332 /* Private data that we'll store in (struct thread_info)->private. */
333 struct private_thread_info
340 free_private_thread_info (struct private_thread_info
*info
)
346 /* Returns true if the multi-process extensions are in effect. */
348 remote_multi_process_p (struct remote_state
*rs
)
350 return rs
->extended
&& rs
->multi_process_aware
;
353 /* This data could be associated with a target, but we do not always
354 have access to the current target when we need it, so for now it is
355 static. This will be fine for as long as only one target is in use
357 static struct remote_state remote_state
;
359 static struct remote_state
*
360 get_remote_state_raw (void)
362 return &remote_state
;
365 /* Description of the remote protocol for a given architecture. */
369 long offset
; /* Offset into G packet. */
370 long regnum
; /* GDB's internal register number. */
371 LONGEST pnum
; /* Remote protocol register number. */
372 int in_g_packet
; /* Always part of G packet. */
373 /* long size in bytes; == register_size (target_gdbarch, regnum);
375 /* char *name; == gdbarch_register_name (target_gdbarch, regnum);
379 struct remote_arch_state
381 /* Description of the remote protocol registers. */
382 long sizeof_g_packet
;
384 /* Description of the remote protocol registers indexed by REGNUM
385 (making an array gdbarch_num_regs in size). */
386 struct packet_reg
*regs
;
388 /* This is the size (in chars) of the first response to the ``g''
389 packet. It is used as a heuristic when determining the maximum
390 size of memory-read and memory-write packets. A target will
391 typically only reserve a buffer large enough to hold the ``g''
392 packet. The size does not include packet overhead (headers and
394 long actual_register_packet_size
;
396 /* This is the maximum size (in chars) of a non read/write packet.
397 It is also used as a cap on the size of read/write packets. */
398 long remote_packet_size
;
401 long sizeof_pkt
= 2000;
403 /* Utility: generate error from an incoming stub packet. */
405 trace_error (char *buf
)
408 return; /* not an error msg */
411 case '1': /* malformed packet error */
412 if (*++buf
== '0') /* general case: */
413 error (_("remote.c: error in outgoing packet."));
415 error (_("remote.c: error in outgoing packet at field #%ld."),
416 strtol (buf
, NULL
, 16));
418 error (_("trace API error 0x%s."), ++buf
);
420 error (_("Target returns error code '%s'."), buf
);
424 /* Utility: wait for reply from stub, while accepting "O" packets. */
426 remote_get_noisy_reply (char **buf_p
,
429 do /* Loop on reply from remote stub. */
432 QUIT
; /* allow user to bail out with ^C */
433 getpkt (buf_p
, sizeof_buf
, 0);
436 error (_("Target does not support this command."));
437 else if (buf
[0] == 'E')
439 else if (buf
[0] == 'O' &&
441 remote_console_output (buf
+ 1); /* 'O' message from stub */
443 return buf
; /* here's the actual reply */
448 /* Handle for retreving the remote protocol data from gdbarch. */
449 static struct gdbarch_data
*remote_gdbarch_data_handle
;
451 static struct remote_arch_state
*
452 get_remote_arch_state (void)
454 return gdbarch_data (target_gdbarch
, remote_gdbarch_data_handle
);
457 /* Fetch the global remote target state. */
459 static struct remote_state
*
460 get_remote_state (void)
462 /* Make sure that the remote architecture state has been
463 initialized, because doing so might reallocate rs->buf. Any
464 function which calls getpkt also needs to be mindful of changes
465 to rs->buf, but this call limits the number of places which run
467 get_remote_arch_state ();
469 return get_remote_state_raw ();
473 compare_pnums (const void *lhs_
, const void *rhs_
)
475 const struct packet_reg
* const *lhs
= lhs_
;
476 const struct packet_reg
* const *rhs
= rhs_
;
478 if ((*lhs
)->pnum
< (*rhs
)->pnum
)
480 else if ((*lhs
)->pnum
== (*rhs
)->pnum
)
487 init_remote_state (struct gdbarch
*gdbarch
)
489 int regnum
, num_remote_regs
, offset
;
490 struct remote_state
*rs
= get_remote_state_raw ();
491 struct remote_arch_state
*rsa
;
492 struct packet_reg
**remote_regs
;
494 rsa
= GDBARCH_OBSTACK_ZALLOC (gdbarch
, struct remote_arch_state
);
496 /* Use the architecture to build a regnum<->pnum table, which will be
497 1:1 unless a feature set specifies otherwise. */
498 rsa
->regs
= GDBARCH_OBSTACK_CALLOC (gdbarch
,
499 gdbarch_num_regs (gdbarch
),
501 for (regnum
= 0; regnum
< gdbarch_num_regs (gdbarch
); regnum
++)
503 struct packet_reg
*r
= &rsa
->regs
[regnum
];
505 if (register_size (gdbarch
, regnum
) == 0)
506 /* Do not try to fetch zero-sized (placeholder) registers. */
509 r
->pnum
= gdbarch_remote_register_number (gdbarch
, regnum
);
514 /* Define the g/G packet format as the contents of each register
515 with a remote protocol number, in order of ascending protocol
518 remote_regs
= alloca (gdbarch_num_regs (gdbarch
)
519 * sizeof (struct packet_reg
*));
520 for (num_remote_regs
= 0, regnum
= 0;
521 regnum
< gdbarch_num_regs (gdbarch
);
523 if (rsa
->regs
[regnum
].pnum
!= -1)
524 remote_regs
[num_remote_regs
++] = &rsa
->regs
[regnum
];
526 qsort (remote_regs
, num_remote_regs
, sizeof (struct packet_reg
*),
529 for (regnum
= 0, offset
= 0; regnum
< num_remote_regs
; regnum
++)
531 remote_regs
[regnum
]->in_g_packet
= 1;
532 remote_regs
[regnum
]->offset
= offset
;
533 offset
+= register_size (gdbarch
, remote_regs
[regnum
]->regnum
);
536 /* Record the maximum possible size of the g packet - it may turn out
538 rsa
->sizeof_g_packet
= offset
;
540 /* Default maximum number of characters in a packet body. Many
541 remote stubs have a hardwired buffer size of 400 bytes
542 (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used
543 as the maximum packet-size to ensure that the packet and an extra
544 NUL character can always fit in the buffer. This stops GDB
545 trashing stubs that try to squeeze an extra NUL into what is
546 already a full buffer (As of 1999-12-04 that was most stubs). */
547 rsa
->remote_packet_size
= 400 - 1;
549 /* This one is filled in when a ``g'' packet is received. */
550 rsa
->actual_register_packet_size
= 0;
552 /* Should rsa->sizeof_g_packet needs more space than the
553 default, adjust the size accordingly. Remember that each byte is
554 encoded as two characters. 32 is the overhead for the packet
555 header / footer. NOTE: cagney/1999-10-26: I suspect that 8
556 (``$NN:G...#NN'') is a better guess, the below has been padded a
558 if (rsa
->sizeof_g_packet
> ((rsa
->remote_packet_size
- 32) / 2))
559 rsa
->remote_packet_size
= (rsa
->sizeof_g_packet
* 2 + 32);
561 /* Make sure that the packet buffer is plenty big enough for
562 this architecture. */
563 if (rs
->buf_size
< rsa
->remote_packet_size
)
565 rs
->buf_size
= 2 * rsa
->remote_packet_size
;
566 rs
->buf
= xrealloc (rs
->buf
, rs
->buf_size
);
572 /* Return the current allowed size of a remote packet. This is
573 inferred from the current architecture, and should be used to
574 limit the length of outgoing packets. */
576 get_remote_packet_size (void)
578 struct remote_state
*rs
= get_remote_state ();
579 struct remote_arch_state
*rsa
= get_remote_arch_state ();
581 if (rs
->explicit_packet_size
)
582 return rs
->explicit_packet_size
;
584 return rsa
->remote_packet_size
;
587 static struct packet_reg
*
588 packet_reg_from_regnum (struct remote_arch_state
*rsa
, long regnum
)
590 if (regnum
< 0 && regnum
>= gdbarch_num_regs (target_gdbarch
))
594 struct packet_reg
*r
= &rsa
->regs
[regnum
];
595 gdb_assert (r
->regnum
== regnum
);
600 static struct packet_reg
*
601 packet_reg_from_pnum (struct remote_arch_state
*rsa
, LONGEST pnum
)
604 for (i
= 0; i
< gdbarch_num_regs (target_gdbarch
); i
++)
606 struct packet_reg
*r
= &rsa
->regs
[i
];
613 /* FIXME: graces/2002-08-08: These variables should eventually be
614 bound to an instance of the target object (as in gdbarch-tdep()),
615 when such a thing exists. */
617 /* This is set to the data address of the access causing the target
618 to stop for a watchpoint. */
619 static CORE_ADDR remote_watch_data_address
;
621 /* This is non-zero if target stopped for a watchpoint. */
622 static int remote_stopped_by_watchpoint_p
;
624 static struct target_ops remote_ops
;
626 static struct target_ops extended_remote_ops
;
628 static int remote_async_mask_value
= 1;
630 /* FIXME: cagney/1999-09-23: Even though getpkt was called with
631 ``forever'' still use the normal timeout mechanism. This is
632 currently used by the ASYNC code to guarentee that target reads
633 during the initial connect always time-out. Once getpkt has been
634 modified to return a timeout indication and, in turn
635 remote_wait()/wait_for_inferior() have gained a timeout parameter
637 static int wait_forever_enabled_p
= 1;
639 /* Allow the user to specify what sequence to send to the remote
640 when he requests a program interruption: Although ^C is usually
641 what remote systems expect (this is the default, here), it is
642 sometimes preferable to send a break. On other systems such
643 as the Linux kernel, a break followed by g, which is Magic SysRq g
644 is required in order to interrupt the execution. */
645 const char interrupt_sequence_control_c
[] = "Ctrl-C";
646 const char interrupt_sequence_break
[] = "BREAK";
647 const char interrupt_sequence_break_g
[] = "BREAK-g";
648 static const char *interrupt_sequence_modes
[] =
650 interrupt_sequence_control_c
,
651 interrupt_sequence_break
,
652 interrupt_sequence_break_g
,
655 static const char *interrupt_sequence_mode
= interrupt_sequence_control_c
;
658 show_interrupt_sequence (struct ui_file
*file
, int from_tty
,
659 struct cmd_list_element
*c
,
662 if (interrupt_sequence_mode
== interrupt_sequence_control_c
)
663 fprintf_filtered (file
,
664 _("Send the ASCII ETX character (Ctrl-c) "
665 "to the remote target to interrupt the "
666 "execution of the program.\n"));
667 else if (interrupt_sequence_mode
== interrupt_sequence_break
)
668 fprintf_filtered (file
,
669 _("send a break signal to the remote target "
670 "to interrupt the execution of the program.\n"));
671 else if (interrupt_sequence_mode
== interrupt_sequence_break_g
)
672 fprintf_filtered (file
,
673 _("Send a break signal and 'g' a.k.a. Magic SysRq g to "
674 "the remote target to interrupt the execution "
675 "of Linux kernel.\n"));
677 internal_error (__FILE__
, __LINE__
,
678 _("Invalid value for interrupt_sequence_mode: %s."),
679 interrupt_sequence_mode
);
682 /* This boolean variable specifies whether interrupt_sequence is sent
683 to the remote target when gdb connects to it.
684 This is mostly needed when you debug the Linux kernel: The Linux kernel
685 expects BREAK g which is Magic SysRq g for connecting gdb. */
686 static int interrupt_on_connect
= 0;
688 /* This variable is used to implement the "set/show remotebreak" commands.
689 Since these commands are now deprecated in favor of "set/show remote
690 interrupt-sequence", it no longer has any effect on the code. */
691 static int remote_break
;
694 set_remotebreak (char *args
, int from_tty
, struct cmd_list_element
*c
)
697 interrupt_sequence_mode
= interrupt_sequence_break
;
699 interrupt_sequence_mode
= interrupt_sequence_control_c
;
703 show_remotebreak (struct ui_file
*file
, int from_tty
,
704 struct cmd_list_element
*c
,
709 /* Descriptor for I/O to remote machine. Initialize it to NULL so that
710 remote_open knows that we don't have a file open when the program
712 static struct serial
*remote_desc
= NULL
;
714 /* This variable sets the number of bits in an address that are to be
715 sent in a memory ("M" or "m") packet. Normally, after stripping
716 leading zeros, the entire address would be sent. This variable
717 restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The
718 initial implementation of remote.c restricted the address sent in
719 memory packets to ``host::sizeof long'' bytes - (typically 32
720 bits). Consequently, for 64 bit targets, the upper 32 bits of an
721 address was never sent. Since fixing this bug may cause a break in
722 some remote targets this variable is principly provided to
723 facilitate backward compatibility. */
725 static int remote_address_size
;
727 /* Temporary to track who currently owns the terminal. See
728 remote_terminal_* for more details. */
730 static int remote_async_terminal_ours_p
;
732 /* The executable file to use for "run" on the remote side. */
734 static char *remote_exec_file
= "";
737 /* User configurable variables for the number of characters in a
738 memory read/write packet. MIN (rsa->remote_packet_size,
739 rsa->sizeof_g_packet) is the default. Some targets need smaller
740 values (fifo overruns, et.al.) and some users need larger values
741 (speed up transfers). The variables ``preferred_*'' (the user
742 request), ``current_*'' (what was actually set) and ``forced_*''
743 (Positive - a soft limit, negative - a hard limit). */
745 struct memory_packet_config
752 /* Compute the current size of a read/write packet. Since this makes
753 use of ``actual_register_packet_size'' the computation is dynamic. */
756 get_memory_packet_size (struct memory_packet_config
*config
)
758 struct remote_state
*rs
= get_remote_state ();
759 struct remote_arch_state
*rsa
= get_remote_arch_state ();
761 /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk
762 law?) that some hosts don't cope very well with large alloca()
763 calls. Eventually the alloca() code will be replaced by calls to
764 xmalloc() and make_cleanups() allowing this restriction to either
765 be lifted or removed. */
766 #ifndef MAX_REMOTE_PACKET_SIZE
767 #define MAX_REMOTE_PACKET_SIZE 16384
769 /* NOTE: 20 ensures we can write at least one byte. */
770 #ifndef MIN_REMOTE_PACKET_SIZE
771 #define MIN_REMOTE_PACKET_SIZE 20
776 if (config
->size
<= 0)
777 what_they_get
= MAX_REMOTE_PACKET_SIZE
;
779 what_they_get
= config
->size
;
783 what_they_get
= get_remote_packet_size ();
784 /* Limit the packet to the size specified by the user. */
786 && what_they_get
> config
->size
)
787 what_they_get
= config
->size
;
789 /* Limit it to the size of the targets ``g'' response unless we have
790 permission from the stub to use a larger packet size. */
791 if (rs
->explicit_packet_size
== 0
792 && rsa
->actual_register_packet_size
> 0
793 && what_they_get
> rsa
->actual_register_packet_size
)
794 what_they_get
= rsa
->actual_register_packet_size
;
796 if (what_they_get
> MAX_REMOTE_PACKET_SIZE
)
797 what_they_get
= MAX_REMOTE_PACKET_SIZE
;
798 if (what_they_get
< MIN_REMOTE_PACKET_SIZE
)
799 what_they_get
= MIN_REMOTE_PACKET_SIZE
;
801 /* Make sure there is room in the global buffer for this packet
802 (including its trailing NUL byte). */
803 if (rs
->buf_size
< what_they_get
+ 1)
805 rs
->buf_size
= 2 * what_they_get
;
806 rs
->buf
= xrealloc (rs
->buf
, 2 * what_they_get
);
809 return what_they_get
;
812 /* Update the size of a read/write packet. If they user wants
813 something really big then do a sanity check. */
816 set_memory_packet_size (char *args
, struct memory_packet_config
*config
)
818 int fixed_p
= config
->fixed_p
;
819 long size
= config
->size
;
821 error (_("Argument required (integer, `fixed' or `limited')."));
822 else if (strcmp (args
, "hard") == 0
823 || strcmp (args
, "fixed") == 0)
825 else if (strcmp (args
, "soft") == 0
826 || strcmp (args
, "limit") == 0)
831 size
= strtoul (args
, &end
, 0);
833 error (_("Invalid %s (bad syntax)."), config
->name
);
835 /* Instead of explicitly capping the size of a packet to
836 MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is
837 instead allowed to set the size to something arbitrarily
839 if (size
> MAX_REMOTE_PACKET_SIZE
)
840 error (_("Invalid %s (too large)."), config
->name
);
844 if (fixed_p
&& !config
->fixed_p
)
846 if (! query (_("The target may not be able to correctly handle a %s\n"
847 "of %ld bytes. Change the packet size? "),
849 error (_("Packet size not changed."));
851 /* Update the config. */
852 config
->fixed_p
= fixed_p
;
857 show_memory_packet_size (struct memory_packet_config
*config
)
859 printf_filtered (_("The %s is %ld. "), config
->name
, config
->size
);
861 printf_filtered (_("Packets are fixed at %ld bytes.\n"),
862 get_memory_packet_size (config
));
864 printf_filtered (_("Packets are limited to %ld bytes.\n"),
865 get_memory_packet_size (config
));
868 static struct memory_packet_config memory_write_packet_config
=
870 "memory-write-packet-size",
874 set_memory_write_packet_size (char *args
, int from_tty
)
876 set_memory_packet_size (args
, &memory_write_packet_config
);
880 show_memory_write_packet_size (char *args
, int from_tty
)
882 show_memory_packet_size (&memory_write_packet_config
);
886 get_memory_write_packet_size (void)
888 return get_memory_packet_size (&memory_write_packet_config
);
891 static struct memory_packet_config memory_read_packet_config
=
893 "memory-read-packet-size",
897 set_memory_read_packet_size (char *args
, int from_tty
)
899 set_memory_packet_size (args
, &memory_read_packet_config
);
903 show_memory_read_packet_size (char *args
, int from_tty
)
905 show_memory_packet_size (&memory_read_packet_config
);
909 get_memory_read_packet_size (void)
911 long size
= get_memory_packet_size (&memory_read_packet_config
);
912 /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an
913 extra buffer size argument before the memory read size can be
914 increased beyond this. */
915 if (size
> get_remote_packet_size ())
916 size
= get_remote_packet_size ();
921 /* Generic configuration support for packets the stub optionally
922 supports. Allows the user to specify the use of the packet as well
923 as allowing GDB to auto-detect support in the remote stub. */
927 PACKET_SUPPORT_UNKNOWN
= 0,
936 enum auto_boolean detect
;
937 enum packet_support support
;
940 /* Analyze a packet's return value and update the packet config
951 update_packet_config (struct packet_config
*config
)
953 switch (config
->detect
)
955 case AUTO_BOOLEAN_TRUE
:
956 config
->support
= PACKET_ENABLE
;
958 case AUTO_BOOLEAN_FALSE
:
959 config
->support
= PACKET_DISABLE
;
961 case AUTO_BOOLEAN_AUTO
:
962 config
->support
= PACKET_SUPPORT_UNKNOWN
;
968 show_packet_config_cmd (struct packet_config
*config
)
970 char *support
= "internal-error";
971 switch (config
->support
)
977 support
= "disabled";
979 case PACKET_SUPPORT_UNKNOWN
:
983 switch (config
->detect
)
985 case AUTO_BOOLEAN_AUTO
:
986 printf_filtered (_("Support for the `%s' packet is auto-detected, currently %s.\n"),
987 config
->name
, support
);
989 case AUTO_BOOLEAN_TRUE
:
990 case AUTO_BOOLEAN_FALSE
:
991 printf_filtered (_("Support for the `%s' packet is currently %s.\n"),
992 config
->name
, support
);
998 add_packet_config_cmd (struct packet_config
*config
, const char *name
,
999 const char *title
, int legacy
)
1005 config
->name
= name
;
1006 config
->title
= title
;
1007 config
->detect
= AUTO_BOOLEAN_AUTO
;
1008 config
->support
= PACKET_SUPPORT_UNKNOWN
;
1009 set_doc
= xstrprintf ("Set use of remote protocol `%s' (%s) packet",
1011 show_doc
= xstrprintf ("Show current use of remote protocol `%s' (%s) packet",
1013 /* set/show TITLE-packet {auto,on,off} */
1014 cmd_name
= xstrprintf ("%s-packet", title
);
1015 add_setshow_auto_boolean_cmd (cmd_name
, class_obscure
,
1016 &config
->detect
, set_doc
, show_doc
, NULL
, /* help_doc */
1017 set_remote_protocol_packet_cmd
,
1018 show_remote_protocol_packet_cmd
,
1019 &remote_set_cmdlist
, &remote_show_cmdlist
);
1020 /* The command code copies the documentation strings. */
1023 /* set/show remote NAME-packet {auto,on,off} -- legacy. */
1027 legacy_name
= xstrprintf ("%s-packet", name
);
1028 add_alias_cmd (legacy_name
, cmd_name
, class_obscure
, 0,
1029 &remote_set_cmdlist
);
1030 add_alias_cmd (legacy_name
, cmd_name
, class_obscure
, 0,
1031 &remote_show_cmdlist
);
1035 static enum packet_result
1036 packet_check_result (const char *buf
)
1040 /* The stub recognized the packet request. Check that the
1041 operation succeeded. */
1043 && isxdigit (buf
[1]) && isxdigit (buf
[2])
1045 /* "Enn" - definitly an error. */
1046 return PACKET_ERROR
;
1048 /* Always treat "E." as an error. This will be used for
1049 more verbose error messages, such as E.memtypes. */
1050 if (buf
[0] == 'E' && buf
[1] == '.')
1051 return PACKET_ERROR
;
1053 /* The packet may or may not be OK. Just assume it is. */
1057 /* The stub does not support the packet. */
1058 return PACKET_UNKNOWN
;
1061 static enum packet_result
1062 packet_ok (const char *buf
, struct packet_config
*config
)
1064 enum packet_result result
;
1066 result
= packet_check_result (buf
);
1071 /* The stub recognized the packet request. */
1072 switch (config
->support
)
1074 case PACKET_SUPPORT_UNKNOWN
:
1076 fprintf_unfiltered (gdb_stdlog
,
1077 "Packet %s (%s) is supported\n",
1078 config
->name
, config
->title
);
1079 config
->support
= PACKET_ENABLE
;
1081 case PACKET_DISABLE
:
1082 internal_error (__FILE__
, __LINE__
,
1083 _("packet_ok: attempt to use a disabled packet"));
1089 case PACKET_UNKNOWN
:
1090 /* The stub does not support the packet. */
1091 switch (config
->support
)
1094 if (config
->detect
== AUTO_BOOLEAN_AUTO
)
1095 /* If the stub previously indicated that the packet was
1096 supported then there is a protocol error.. */
1097 error (_("Protocol error: %s (%s) conflicting enabled responses."),
1098 config
->name
, config
->title
);
1100 /* The user set it wrong. */
1101 error (_("Enabled packet %s (%s) not recognized by stub"),
1102 config
->name
, config
->title
);
1104 case PACKET_SUPPORT_UNKNOWN
:
1106 fprintf_unfiltered (gdb_stdlog
,
1107 "Packet %s (%s) is NOT supported\n",
1108 config
->name
, config
->title
);
1109 config
->support
= PACKET_DISABLE
;
1111 case PACKET_DISABLE
:
1133 PACKET_vFile_pwrite
,
1135 PACKET_vFile_unlink
,
1137 PACKET_qXfer_features
,
1138 PACKET_qXfer_libraries
,
1139 PACKET_qXfer_memory_map
,
1140 PACKET_qXfer_spu_read
,
1141 PACKET_qXfer_spu_write
,
1142 PACKET_qXfer_osdata
,
1143 PACKET_qXfer_threads
,
1146 PACKET_QPassSignals
,
1147 PACKET_qSearch_memory
,
1150 PACKET_QStartNoAckMode
,
1152 PACKET_qXfer_siginfo_read
,
1153 PACKET_qXfer_siginfo_write
,
1155 PACKET_ConditionalTracepoints
,
1156 PACKET_FastTracepoints
,
1162 static struct packet_config remote_protocol_packets
[PACKET_MAX
];
1165 set_remote_protocol_packet_cmd (char *args
, int from_tty
,
1166 struct cmd_list_element
*c
)
1168 struct packet_config
*packet
;
1170 for (packet
= remote_protocol_packets
;
1171 packet
< &remote_protocol_packets
[PACKET_MAX
];
1174 if (&packet
->detect
== c
->var
)
1176 update_packet_config (packet
);
1180 internal_error (__FILE__
, __LINE__
, "Could not find config for %s",
1185 show_remote_protocol_packet_cmd (struct ui_file
*file
, int from_tty
,
1186 struct cmd_list_element
*c
,
1189 struct packet_config
*packet
;
1191 for (packet
= remote_protocol_packets
;
1192 packet
< &remote_protocol_packets
[PACKET_MAX
];
1195 if (&packet
->detect
== c
->var
)
1197 show_packet_config_cmd (packet
);
1201 internal_error (__FILE__
, __LINE__
, "Could not find config for %s",
1205 /* Should we try one of the 'Z' requests? */
1209 Z_PACKET_SOFTWARE_BP
,
1210 Z_PACKET_HARDWARE_BP
,
1217 /* For compatibility with older distributions. Provide a ``set remote
1218 Z-packet ...'' command that updates all the Z packet types. */
1220 static enum auto_boolean remote_Z_packet_detect
;
1223 set_remote_protocol_Z_packet_cmd (char *args
, int from_tty
,
1224 struct cmd_list_element
*c
)
1227 for (i
= 0; i
< NR_Z_PACKET_TYPES
; i
++)
1229 remote_protocol_packets
[PACKET_Z0
+ i
].detect
= remote_Z_packet_detect
;
1230 update_packet_config (&remote_protocol_packets
[PACKET_Z0
+ i
]);
1235 show_remote_protocol_Z_packet_cmd (struct ui_file
*file
, int from_tty
,
1236 struct cmd_list_element
*c
,
1240 for (i
= 0; i
< NR_Z_PACKET_TYPES
; i
++)
1242 show_packet_config_cmd (&remote_protocol_packets
[PACKET_Z0
+ i
]);
1246 /* Should we try the 'ThreadInfo' query packet?
1248 This variable (NOT available to the user: auto-detect only!)
1249 determines whether GDB will use the new, simpler "ThreadInfo"
1250 query or the older, more complex syntax for thread queries.
1251 This is an auto-detect variable (set to true at each connect,
1252 and set to false when the target fails to recognize it). */
1254 static int use_threadinfo_query
;
1255 static int use_threadextra_query
;
1257 /* Tokens for use by the asynchronous signal handlers for SIGINT. */
1258 static struct async_signal_handler
*sigint_remote_twice_token
;
1259 static struct async_signal_handler
*sigint_remote_token
;
1262 /* Asynchronous signal handle registered as event loop source for
1263 when we have pending events ready to be passed to the core. */
1265 static struct async_event_handler
*remote_async_inferior_event_token
;
1267 /* Asynchronous signal handle registered as event loop source for when
1268 the remote sent us a %Stop notification. The registered callback
1269 will do a vStopped sequence to pull the rest of the events out of
1270 the remote side into our event queue. */
1272 static struct async_event_handler
*remote_async_get_pending_events_token
;
1275 static ptid_t magic_null_ptid
;
1276 static ptid_t not_sent_ptid
;
1277 static ptid_t any_thread_ptid
;
1279 /* These are the threads which we last sent to the remote system. The
1280 TID member will be -1 for all or -2 for not sent yet. */
1282 static ptid_t general_thread
;
1283 static ptid_t continue_thread
;
1285 /* Find out if the stub attached to PID (and hence GDB should offer to
1286 detach instead of killing it when bailing out). */
1289 remote_query_attached (int pid
)
1291 struct remote_state
*rs
= get_remote_state ();
1293 if (remote_protocol_packets
[PACKET_qAttached
].support
== PACKET_DISABLE
)
1296 if (remote_multi_process_p (rs
))
1297 sprintf (rs
->buf
, "qAttached:%x", pid
);
1299 sprintf (rs
->buf
, "qAttached");
1302 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1304 switch (packet_ok (rs
->buf
,
1305 &remote_protocol_packets
[PACKET_qAttached
]))
1308 if (strcmp (rs
->buf
, "1") == 0)
1312 warning (_("Remote failure reply: %s"), rs
->buf
);
1314 case PACKET_UNKNOWN
:
1321 /* Add PID to GDB's inferior table. Since we can be connected to a
1322 remote system before before knowing about any inferior, mark the
1323 target with execution when we find the first inferior. If ATTACHED
1324 is 1, then we had just attached to this inferior. If it is 0, then
1325 we just created this inferior. If it is -1, then try querying the
1326 remote stub to find out if it had attached to the inferior or
1329 static struct inferior
*
1330 remote_add_inferior (int pid
, int attached
)
1332 struct inferior
*inf
;
1334 /* Check whether this process we're learning about is to be
1335 considered attached, or if is to be considered to have been
1336 spawned by the stub. */
1338 attached
= remote_query_attached (pid
);
1340 if (gdbarch_has_global_solist (target_gdbarch
))
1342 /* If the target shares code across all inferiors, then every
1343 attach adds a new inferior. */
1344 inf
= add_inferior (pid
);
1346 /* ... and every inferior is bound to the same program space.
1347 However, each inferior may still have its own address
1349 inf
->aspace
= maybe_new_address_space ();
1350 inf
->pspace
= current_program_space
;
1354 /* In the traditional debugging scenario, there's a 1-1 match
1355 between program/address spaces. We simply bind the inferior
1356 to the program space's address space. */
1357 inf
= current_inferior ();
1358 inferior_appeared (inf
, pid
);
1361 inf
->attach_flag
= attached
;
1366 /* Add thread PTID to GDB's thread list. Tag it as executing/running
1367 according to RUNNING. */
1370 remote_add_thread (ptid_t ptid
, int running
)
1374 set_executing (ptid
, running
);
1375 set_running (ptid
, running
);
1378 /* Come here when we learn about a thread id from the remote target.
1379 It may be the first time we hear about such thread, so take the
1380 opportunity to add it to GDB's thread list. In case this is the
1381 first time we're noticing its corresponding inferior, add it to
1382 GDB's inferior list as well. */
1385 remote_notice_new_inferior (ptid_t currthread
, int running
)
1387 /* If this is a new thread, add it to GDB's thread list.
1388 If we leave it up to WFI to do this, bad things will happen. */
1390 if (in_thread_list (currthread
) && is_exited (currthread
))
1392 /* We're seeing an event on a thread id we knew had exited.
1393 This has to be a new thread reusing the old id. Add it. */
1394 remote_add_thread (currthread
, running
);
1398 if (!in_thread_list (currthread
))
1400 struct inferior
*inf
= NULL
;
1401 int pid
= ptid_get_pid (currthread
);
1403 if (ptid_is_pid (inferior_ptid
)
1404 && pid
== ptid_get_pid (inferior_ptid
))
1406 /* inferior_ptid has no thread member yet. This can happen
1407 with the vAttach -> remote_wait,"TAAthread:" path if the
1408 stub doesn't support qC. This is the first stop reported
1409 after an attach, so this is the main thread. Update the
1410 ptid in the thread list. */
1411 if (in_thread_list (pid_to_ptid (pid
)))
1412 thread_change_ptid (inferior_ptid
, currthread
);
1415 remote_add_thread (currthread
, running
);
1416 inferior_ptid
= currthread
;
1421 if (ptid_equal (magic_null_ptid
, inferior_ptid
))
1423 /* inferior_ptid is not set yet. This can happen with the
1424 vRun -> remote_wait,"TAAthread:" path if the stub
1425 doesn't support qC. This is the first stop reported
1426 after an attach, so this is the main thread. Update the
1427 ptid in the thread list. */
1428 thread_change_ptid (inferior_ptid
, currthread
);
1432 /* When connecting to a target remote, or to a target
1433 extended-remote which already was debugging an inferior, we
1434 may not know about it yet. Add it before adding its child
1435 thread, so notifications are emitted in a sensible order. */
1436 if (!in_inferior_list (ptid_get_pid (currthread
)))
1437 inf
= remote_add_inferior (ptid_get_pid (currthread
), -1);
1439 /* This is really a new thread. Add it. */
1440 remote_add_thread (currthread
, running
);
1442 /* If we found a new inferior, let the common code do whatever
1443 it needs to with it (e.g., read shared libraries, insert
1446 notice_new_inferior (currthread
, running
, 0);
1450 /* Return the private thread data, creating it if necessary. */
1452 struct private_thread_info
*
1453 demand_private_info (ptid_t ptid
)
1455 struct thread_info
*info
= find_thread_ptid (ptid
);
1461 info
->private = xmalloc (sizeof (*(info
->private)));
1462 info
->private_dtor
= free_private_thread_info
;
1463 info
->private->core
= -1;
1464 info
->private->extra
= 0;
1467 return info
->private;
1470 /* Call this function as a result of
1471 1) A halt indication (T packet) containing a thread id
1472 2) A direct query of currthread
1473 3) Successful execution of set thread
1477 record_currthread (ptid_t currthread
)
1479 general_thread
= currthread
;
1482 static char *last_pass_packet
;
1484 /* If 'QPassSignals' is supported, tell the remote stub what signals
1485 it can simply pass through to the inferior without reporting. */
1488 remote_pass_signals (void)
1490 if (remote_protocol_packets
[PACKET_QPassSignals
].support
!= PACKET_DISABLE
)
1492 char *pass_packet
, *p
;
1493 int numsigs
= (int) TARGET_SIGNAL_LAST
;
1496 gdb_assert (numsigs
< 256);
1497 for (i
= 0; i
< numsigs
; i
++)
1499 if (signal_stop_state (i
) == 0
1500 && signal_print_state (i
) == 0
1501 && signal_pass_state (i
) == 1)
1504 pass_packet
= xmalloc (count
* 3 + strlen ("QPassSignals:") + 1);
1505 strcpy (pass_packet
, "QPassSignals:");
1506 p
= pass_packet
+ strlen (pass_packet
);
1507 for (i
= 0; i
< numsigs
; i
++)
1509 if (signal_stop_state (i
) == 0
1510 && signal_print_state (i
) == 0
1511 && signal_pass_state (i
) == 1)
1514 *p
++ = tohex (i
>> 4);
1515 *p
++ = tohex (i
& 15);
1524 if (!last_pass_packet
|| strcmp (last_pass_packet
, pass_packet
))
1526 struct remote_state
*rs
= get_remote_state ();
1527 char *buf
= rs
->buf
;
1529 putpkt (pass_packet
);
1530 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1531 packet_ok (buf
, &remote_protocol_packets
[PACKET_QPassSignals
]);
1532 if (last_pass_packet
)
1533 xfree (last_pass_packet
);
1534 last_pass_packet
= pass_packet
;
1537 xfree (pass_packet
);
1541 /* If PTID is MAGIC_NULL_PTID, don't set any thread. If PTID is
1542 MINUS_ONE_PTID, set the thread to -1, so the stub returns the
1543 thread. If GEN is set, set the general thread, if not, then set
1544 the step/continue thread. */
1546 set_thread (struct ptid ptid
, int gen
)
1548 struct remote_state
*rs
= get_remote_state ();
1549 ptid_t state
= gen
? general_thread
: continue_thread
;
1550 char *buf
= rs
->buf
;
1551 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
1553 if (ptid_equal (state
, ptid
))
1557 *buf
++ = gen
? 'g' : 'c';
1558 if (ptid_equal (ptid
, magic_null_ptid
))
1559 xsnprintf (buf
, endbuf
- buf
, "0");
1560 else if (ptid_equal (ptid
, any_thread_ptid
))
1561 xsnprintf (buf
, endbuf
- buf
, "0");
1562 else if (ptid_equal (ptid
, minus_one_ptid
))
1563 xsnprintf (buf
, endbuf
- buf
, "-1");
1565 write_ptid (buf
, endbuf
, ptid
);
1567 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1569 general_thread
= ptid
;
1571 continue_thread
= ptid
;
1575 set_general_thread (struct ptid ptid
)
1577 set_thread (ptid
, 1);
1581 set_continue_thread (struct ptid ptid
)
1583 set_thread (ptid
, 0);
1586 /* Change the remote current process. Which thread within the process
1587 ends up selected isn't important, as long as it is the same process
1588 as what INFERIOR_PTID points to.
1590 This comes from that fact that there is no explicit notion of
1591 "selected process" in the protocol. The selected process for
1592 general operations is the process the selected general thread
1596 set_general_process (void)
1598 struct remote_state
*rs
= get_remote_state ();
1600 /* If the remote can't handle multiple processes, don't bother. */
1601 if (!remote_multi_process_p (rs
))
1604 /* We only need to change the remote current thread if it's pointing
1605 at some other process. */
1606 if (ptid_get_pid (general_thread
) != ptid_get_pid (inferior_ptid
))
1607 set_general_thread (inferior_ptid
);
1611 /* Return nonzero if the thread PTID is still alive on the remote
1615 remote_thread_alive (struct target_ops
*ops
, ptid_t ptid
)
1617 struct remote_state
*rs
= get_remote_state ();
1620 if (ptid_equal (ptid
, magic_null_ptid
))
1621 /* The main thread is always alive. */
1624 if (ptid_get_pid (ptid
) != 0 && ptid_get_tid (ptid
) == 0)
1625 /* The main thread is always alive. This can happen after a
1626 vAttach, if the remote side doesn't support
1631 endp
= rs
->buf
+ get_remote_packet_size ();
1634 write_ptid (p
, endp
, ptid
);
1637 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1638 return (rs
->buf
[0] == 'O' && rs
->buf
[1] == 'K');
1641 /* About these extended threadlist and threadinfo packets. They are
1642 variable length packets but, the fields within them are often fixed
1643 length. They are redundent enough to send over UDP as is the
1644 remote protocol in general. There is a matching unit test module
1647 #define OPAQUETHREADBYTES 8
1649 /* a 64 bit opaque identifier */
1650 typedef unsigned char threadref
[OPAQUETHREADBYTES
];
1652 /* WARNING: This threadref data structure comes from the remote O.S.,
1653 libstub protocol encoding, and remote.c. it is not particularly
1656 /* Right now, the internal structure is int. We want it to be bigger.
1660 typedef int gdb_threadref
; /* Internal GDB thread reference. */
1662 /* gdb_ext_thread_info is an internal GDB data structure which is
1663 equivalent to the reply of the remote threadinfo packet. */
1665 struct gdb_ext_thread_info
1667 threadref threadid
; /* External form of thread reference. */
1668 int active
; /* Has state interesting to GDB?
1670 char display
[256]; /* Brief state display, name,
1671 blocked/suspended. */
1672 char shortname
[32]; /* To be used to name threads. */
1673 char more_display
[256]; /* Long info, statistics, queue depth,
1677 /* The volume of remote transfers can be limited by submitting
1678 a mask containing bits specifying the desired information.
1679 Use a union of these values as the 'selection' parameter to
1680 get_thread_info. FIXME: Make these TAG names more thread specific.
1683 #define TAG_THREADID 1
1684 #define TAG_EXISTS 2
1685 #define TAG_DISPLAY 4
1686 #define TAG_THREADNAME 8
1687 #define TAG_MOREDISPLAY 16
1689 #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2)
1691 char *unpack_varlen_hex (char *buff
, ULONGEST
*result
);
1693 static char *unpack_nibble (char *buf
, int *val
);
1695 static char *pack_nibble (char *buf
, int nibble
);
1697 static char *pack_hex_byte (char *pkt
, int /* unsigned char */ byte
);
1699 static char *unpack_byte (char *buf
, int *value
);
1701 static char *pack_int (char *buf
, int value
);
1703 static char *unpack_int (char *buf
, int *value
);
1705 static char *unpack_string (char *src
, char *dest
, int length
);
1707 static char *pack_threadid (char *pkt
, threadref
*id
);
1709 static char *unpack_threadid (char *inbuf
, threadref
*id
);
1711 void int_to_threadref (threadref
*id
, int value
);
1713 static int threadref_to_int (threadref
*ref
);
1715 static void copy_threadref (threadref
*dest
, threadref
*src
);
1717 static int threadmatch (threadref
*dest
, threadref
*src
);
1719 static char *pack_threadinfo_request (char *pkt
, int mode
,
1722 static int remote_unpack_thread_info_response (char *pkt
,
1723 threadref
*expectedref
,
1724 struct gdb_ext_thread_info
1728 static int remote_get_threadinfo (threadref
*threadid
,
1729 int fieldset
, /*TAG mask */
1730 struct gdb_ext_thread_info
*info
);
1732 static char *pack_threadlist_request (char *pkt
, int startflag
,
1734 threadref
*nextthread
);
1736 static int parse_threadlist_response (char *pkt
,
1738 threadref
*original_echo
,
1739 threadref
*resultlist
,
1742 static int remote_get_threadlist (int startflag
,
1743 threadref
*nextthread
,
1747 threadref
*threadlist
);
1749 typedef int (*rmt_thread_action
) (threadref
*ref
, void *context
);
1751 static int remote_threadlist_iterator (rmt_thread_action stepfunction
,
1752 void *context
, int looplimit
);
1754 static int remote_newthread_step (threadref
*ref
, void *context
);
1757 /* Write a PTID to BUF. ENDBUF points to one-passed-the-end of the
1758 buffer we're allowed to write to. Returns
1759 BUF+CHARACTERS_WRITTEN. */
1762 write_ptid (char *buf
, const char *endbuf
, ptid_t ptid
)
1765 struct remote_state
*rs
= get_remote_state ();
1767 if (remote_multi_process_p (rs
))
1769 pid
= ptid_get_pid (ptid
);
1771 buf
+= xsnprintf (buf
, endbuf
- buf
, "p-%x.", -pid
);
1773 buf
+= xsnprintf (buf
, endbuf
- buf
, "p%x.", pid
);
1775 tid
= ptid_get_tid (ptid
);
1777 buf
+= xsnprintf (buf
, endbuf
- buf
, "-%x", -tid
);
1779 buf
+= xsnprintf (buf
, endbuf
- buf
, "%x", tid
);
1784 /* Extract a PTID from BUF. If non-null, OBUF is set to the to one
1785 passed the last parsed char. Returns null_ptid on error. */
1788 read_ptid (char *buf
, char **obuf
)
1792 ULONGEST pid
= 0, tid
= 0;
1796 /* Multi-process ptid. */
1797 pp
= unpack_varlen_hex (p
+ 1, &pid
);
1799 error (_("invalid remote ptid: %s\n"), p
);
1802 pp
= unpack_varlen_hex (p
+ 1, &tid
);
1805 return ptid_build (pid
, 0, tid
);
1808 /* No multi-process. Just a tid. */
1809 pp
= unpack_varlen_hex (p
, &tid
);
1811 /* Since the stub is not sending a process id, then default to
1812 what's in inferior_ptid, unless it's null at this point. If so,
1813 then since there's no way to know the pid of the reported
1814 threads, use the magic number. */
1815 if (ptid_equal (inferior_ptid
, null_ptid
))
1816 pid
= ptid_get_pid (magic_null_ptid
);
1818 pid
= ptid_get_pid (inferior_ptid
);
1822 return ptid_build (pid
, 0, tid
);
1825 /* Encode 64 bits in 16 chars of hex. */
1827 static const char hexchars
[] = "0123456789abcdef";
1830 ishex (int ch
, int *val
)
1832 if ((ch
>= 'a') && (ch
<= 'f'))
1834 *val
= ch
- 'a' + 10;
1837 if ((ch
>= 'A') && (ch
<= 'F'))
1839 *val
= ch
- 'A' + 10;
1842 if ((ch
>= '0') && (ch
<= '9'))
1853 if (ch
>= 'a' && ch
<= 'f')
1854 return ch
- 'a' + 10;
1855 if (ch
>= '0' && ch
<= '9')
1857 if (ch
>= 'A' && ch
<= 'F')
1858 return ch
- 'A' + 10;
1863 stub_unpack_int (char *buff
, int fieldlength
)
1870 nibble
= stubhex (*buff
++);
1874 retval
= retval
<< 4;
1880 unpack_varlen_hex (char *buff
, /* packet to parse */
1884 ULONGEST retval
= 0;
1886 while (ishex (*buff
, &nibble
))
1889 retval
= retval
<< 4;
1890 retval
|= nibble
& 0x0f;
1897 unpack_nibble (char *buf
, int *val
)
1899 *val
= fromhex (*buf
++);
1904 pack_nibble (char *buf
, int nibble
)
1906 *buf
++ = hexchars
[(nibble
& 0x0f)];
1911 pack_hex_byte (char *pkt
, int byte
)
1913 *pkt
++ = hexchars
[(byte
>> 4) & 0xf];
1914 *pkt
++ = hexchars
[(byte
& 0xf)];
1919 unpack_byte (char *buf
, int *value
)
1921 *value
= stub_unpack_int (buf
, 2);
1926 pack_int (char *buf
, int value
)
1928 buf
= pack_hex_byte (buf
, (value
>> 24) & 0xff);
1929 buf
= pack_hex_byte (buf
, (value
>> 16) & 0xff);
1930 buf
= pack_hex_byte (buf
, (value
>> 8) & 0x0ff);
1931 buf
= pack_hex_byte (buf
, (value
& 0xff));
1936 unpack_int (char *buf
, int *value
)
1938 *value
= stub_unpack_int (buf
, 8);
1942 #if 0 /* Currently unused, uncomment when needed. */
1943 static char *pack_string (char *pkt
, char *string
);
1946 pack_string (char *pkt
, char *string
)
1951 len
= strlen (string
);
1953 len
= 200; /* Bigger than most GDB packets, junk??? */
1954 pkt
= pack_hex_byte (pkt
, len
);
1958 if ((ch
== '\0') || (ch
== '#'))
1959 ch
= '*'; /* Protect encapsulation. */
1964 #endif /* 0 (unused) */
1967 unpack_string (char *src
, char *dest
, int length
)
1976 pack_threadid (char *pkt
, threadref
*id
)
1979 unsigned char *altid
;
1981 altid
= (unsigned char *) id
;
1982 limit
= pkt
+ BUF_THREAD_ID_SIZE
;
1984 pkt
= pack_hex_byte (pkt
, *altid
++);
1990 unpack_threadid (char *inbuf
, threadref
*id
)
1993 char *limit
= inbuf
+ BUF_THREAD_ID_SIZE
;
1996 altref
= (char *) id
;
1998 while (inbuf
< limit
)
2000 x
= stubhex (*inbuf
++);
2001 y
= stubhex (*inbuf
++);
2002 *altref
++ = (x
<< 4) | y
;
2007 /* Externally, threadrefs are 64 bits but internally, they are still
2008 ints. This is due to a mismatch of specifications. We would like
2009 to use 64bit thread references internally. This is an adapter
2013 int_to_threadref (threadref
*id
, int value
)
2015 unsigned char *scan
;
2017 scan
= (unsigned char *) id
;
2023 *scan
++ = (value
>> 24) & 0xff;
2024 *scan
++ = (value
>> 16) & 0xff;
2025 *scan
++ = (value
>> 8) & 0xff;
2026 *scan
++ = (value
& 0xff);
2030 threadref_to_int (threadref
*ref
)
2033 unsigned char *scan
;
2039 value
= (value
<< 8) | ((*scan
++) & 0xff);
2044 copy_threadref (threadref
*dest
, threadref
*src
)
2047 unsigned char *csrc
, *cdest
;
2049 csrc
= (unsigned char *) src
;
2050 cdest
= (unsigned char *) dest
;
2057 threadmatch (threadref
*dest
, threadref
*src
)
2059 /* Things are broken right now, so just assume we got a match. */
2061 unsigned char *srcp
, *destp
;
2063 srcp
= (char *) src
;
2064 destp
= (char *) dest
;
2068 result
&= (*srcp
++ == *destp
++) ? 1 : 0;
2075 threadid:1, # always request threadid
2082 /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */
2085 pack_threadinfo_request (char *pkt
, int mode
, threadref
*id
)
2087 *pkt
++ = 'q'; /* Info Query */
2088 *pkt
++ = 'P'; /* process or thread info */
2089 pkt
= pack_int (pkt
, mode
); /* mode */
2090 pkt
= pack_threadid (pkt
, id
); /* threadid */
2091 *pkt
= '\0'; /* terminate */
2095 /* These values tag the fields in a thread info response packet. */
2096 /* Tagging the fields allows us to request specific fields and to
2097 add more fields as time goes by. */
2099 #define TAG_THREADID 1 /* Echo the thread identifier. */
2100 #define TAG_EXISTS 2 /* Is this process defined enough to
2101 fetch registers and its stack? */
2102 #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */
2103 #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */
2104 #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about
2108 remote_unpack_thread_info_response (char *pkt
, threadref
*expectedref
,
2109 struct gdb_ext_thread_info
*info
)
2111 struct remote_state
*rs
= get_remote_state ();
2115 char *limit
= pkt
+ rs
->buf_size
; /* Plausible parsing limit. */
2118 /* info->threadid = 0; FIXME: implement zero_threadref. */
2120 info
->display
[0] = '\0';
2121 info
->shortname
[0] = '\0';
2122 info
->more_display
[0] = '\0';
2124 /* Assume the characters indicating the packet type have been
2126 pkt
= unpack_int (pkt
, &mask
); /* arg mask */
2127 pkt
= unpack_threadid (pkt
, &ref
);
2130 warning (_("Incomplete response to threadinfo request."));
2131 if (!threadmatch (&ref
, expectedref
))
2132 { /* This is an answer to a different request. */
2133 warning (_("ERROR RMT Thread info mismatch."));
2136 copy_threadref (&info
->threadid
, &ref
);
2138 /* Loop on tagged fields , try to bail if somthing goes wrong. */
2140 /* Packets are terminated with nulls. */
2141 while ((pkt
< limit
) && mask
&& *pkt
)
2143 pkt
= unpack_int (pkt
, &tag
); /* tag */
2144 pkt
= unpack_byte (pkt
, &length
); /* length */
2145 if (!(tag
& mask
)) /* Tags out of synch with mask. */
2147 warning (_("ERROR RMT: threadinfo tag mismatch."));
2151 if (tag
== TAG_THREADID
)
2155 warning (_("ERROR RMT: length of threadid is not 16."));
2159 pkt
= unpack_threadid (pkt
, &ref
);
2160 mask
= mask
& ~TAG_THREADID
;
2163 if (tag
== TAG_EXISTS
)
2165 info
->active
= stub_unpack_int (pkt
, length
);
2167 mask
= mask
& ~(TAG_EXISTS
);
2170 warning (_("ERROR RMT: 'exists' length too long."));
2176 if (tag
== TAG_THREADNAME
)
2178 pkt
= unpack_string (pkt
, &info
->shortname
[0], length
);
2179 mask
= mask
& ~TAG_THREADNAME
;
2182 if (tag
== TAG_DISPLAY
)
2184 pkt
= unpack_string (pkt
, &info
->display
[0], length
);
2185 mask
= mask
& ~TAG_DISPLAY
;
2188 if (tag
== TAG_MOREDISPLAY
)
2190 pkt
= unpack_string (pkt
, &info
->more_display
[0], length
);
2191 mask
= mask
& ~TAG_MOREDISPLAY
;
2194 warning (_("ERROR RMT: unknown thread info tag."));
2195 break; /* Not a tag we know about. */
2201 remote_get_threadinfo (threadref
*threadid
, int fieldset
, /* TAG mask */
2202 struct gdb_ext_thread_info
*info
)
2204 struct remote_state
*rs
= get_remote_state ();
2207 pack_threadinfo_request (rs
->buf
, fieldset
, threadid
);
2209 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2211 if (rs
->buf
[0] == '\0')
2214 result
= remote_unpack_thread_info_response (rs
->buf
+ 2,
2219 /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */
2222 pack_threadlist_request (char *pkt
, int startflag
, int threadcount
,
2223 threadref
*nextthread
)
2225 *pkt
++ = 'q'; /* info query packet */
2226 *pkt
++ = 'L'; /* Process LIST or threadLIST request */
2227 pkt
= pack_nibble (pkt
, startflag
); /* initflag 1 bytes */
2228 pkt
= pack_hex_byte (pkt
, threadcount
); /* threadcount 2 bytes */
2229 pkt
= pack_threadid (pkt
, nextthread
); /* 64 bit thread identifier */
2234 /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */
2237 parse_threadlist_response (char *pkt
, int result_limit
,
2238 threadref
*original_echo
, threadref
*resultlist
,
2241 struct remote_state
*rs
= get_remote_state ();
2243 int count
, resultcount
, done
;
2246 /* Assume the 'q' and 'M chars have been stripped. */
2247 limit
= pkt
+ (rs
->buf_size
- BUF_THREAD_ID_SIZE
);
2248 /* done parse past here */
2249 pkt
= unpack_byte (pkt
, &count
); /* count field */
2250 pkt
= unpack_nibble (pkt
, &done
);
2251 /* The first threadid is the argument threadid. */
2252 pkt
= unpack_threadid (pkt
, original_echo
); /* should match query packet */
2253 while ((count
-- > 0) && (pkt
< limit
))
2255 pkt
= unpack_threadid (pkt
, resultlist
++);
2256 if (resultcount
++ >= result_limit
)
2265 remote_get_threadlist (int startflag
, threadref
*nextthread
, int result_limit
,
2266 int *done
, int *result_count
, threadref
*threadlist
)
2268 struct remote_state
*rs
= get_remote_state ();
2269 static threadref echo_nextthread
;
2272 /* Trancate result limit to be smaller than the packet size. */
2273 if ((((result_limit
+ 1) * BUF_THREAD_ID_SIZE
) + 10) >= get_remote_packet_size ())
2274 result_limit
= (get_remote_packet_size () / BUF_THREAD_ID_SIZE
) - 2;
2276 pack_threadlist_request (rs
->buf
, startflag
, result_limit
, nextthread
);
2278 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2280 if (*rs
->buf
== '\0')
2284 parse_threadlist_response (rs
->buf
+ 2, result_limit
, &echo_nextthread
,
2287 if (!threadmatch (&echo_nextthread
, nextthread
))
2289 /* FIXME: This is a good reason to drop the packet. */
2290 /* Possably, there is a duplicate response. */
2292 retransmit immediatly - race conditions
2293 retransmit after timeout - yes
2295 wait for packet, then exit
2297 warning (_("HMM: threadlist did not echo arg thread, dropping it."));
2298 return 0; /* I choose simply exiting. */
2300 if (*result_count
<= 0)
2304 warning (_("RMT ERROR : failed to get remote thread list."));
2307 return result
; /* break; */
2309 if (*result_count
> result_limit
)
2312 warning (_("RMT ERROR: threadlist response longer than requested."));
2318 /* This is the interface between remote and threads, remotes upper
2321 /* remote_find_new_threads retrieves the thread list and for each
2322 thread in the list, looks up the thread in GDB's internal list,
2323 adding the thread if it does not already exist. This involves
2324 getting partial thread lists from the remote target so, polling the
2325 quit_flag is required. */
2328 /* About this many threadisds fit in a packet. */
2330 #define MAXTHREADLISTRESULTS 32
2333 remote_threadlist_iterator (rmt_thread_action stepfunction
, void *context
,
2336 int done
, i
, result_count
;
2340 static threadref nextthread
;
2341 static threadref resultthreadlist
[MAXTHREADLISTRESULTS
];
2346 if (loopcount
++ > looplimit
)
2349 warning (_("Remote fetch threadlist -infinite loop-."));
2352 if (!remote_get_threadlist (startflag
, &nextthread
, MAXTHREADLISTRESULTS
,
2353 &done
, &result_count
, resultthreadlist
))
2358 /* Clear for later iterations. */
2360 /* Setup to resume next batch of thread references, set nextthread. */
2361 if (result_count
>= 1)
2362 copy_threadref (&nextthread
, &resultthreadlist
[result_count
- 1]);
2364 while (result_count
--)
2365 if (!(result
= (*stepfunction
) (&resultthreadlist
[i
++], context
)))
2372 remote_newthread_step (threadref
*ref
, void *context
)
2374 int pid
= ptid_get_pid (inferior_ptid
);
2375 ptid_t ptid
= ptid_build (pid
, 0, threadref_to_int (ref
));
2377 if (!in_thread_list (ptid
))
2379 return 1; /* continue iterator */
2382 #define CRAZY_MAX_THREADS 1000
2385 remote_current_thread (ptid_t oldpid
)
2387 struct remote_state
*rs
= get_remote_state ();
2390 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2391 if (rs
->buf
[0] == 'Q' && rs
->buf
[1] == 'C')
2392 return read_ptid (&rs
->buf
[2], NULL
);
2397 /* Find new threads for info threads command.
2398 * Original version, using John Metzler's thread protocol.
2402 remote_find_new_threads (void)
2404 remote_threadlist_iterator (remote_newthread_step
, 0,
2408 #if defined(HAVE_LIBEXPAT)
2410 typedef struct thread_item
2416 DEF_VEC_O(thread_item_t
);
2418 struct threads_parsing_context
2420 VEC (thread_item_t
) *items
;
2424 start_thread (struct gdb_xml_parser
*parser
,
2425 const struct gdb_xml_element
*element
,
2426 void *user_data
, VEC(gdb_xml_value_s
) *attributes
)
2428 struct threads_parsing_context
*data
= user_data
;
2430 struct thread_item item
;
2433 id
= VEC_index (gdb_xml_value_s
, attributes
, 0)->value
;
2434 item
.ptid
= read_ptid (id
, NULL
);
2436 if (VEC_length (gdb_xml_value_s
, attributes
) > 1)
2437 item
.core
= *(ULONGEST
*) VEC_index (gdb_xml_value_s
, attributes
, 1)->value
;
2443 VEC_safe_push (thread_item_t
, data
->items
, &item
);
2447 end_thread (struct gdb_xml_parser
*parser
,
2448 const struct gdb_xml_element
*element
,
2449 void *user_data
, const char *body_text
)
2451 struct threads_parsing_context
*data
= user_data
;
2453 if (body_text
&& *body_text
)
2454 VEC_last (thread_item_t
, data
->items
)->extra
= strdup (body_text
);
2457 const struct gdb_xml_attribute thread_attributes
[] = {
2458 { "id", GDB_XML_AF_NONE
, NULL
, NULL
},
2459 { "core", GDB_XML_AF_OPTIONAL
, gdb_xml_parse_attr_ulongest
, NULL
},
2460 { NULL
, GDB_XML_AF_NONE
, NULL
, NULL
}
2463 const struct gdb_xml_element thread_children
[] = {
2464 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
2467 const struct gdb_xml_element threads_children
[] = {
2468 { "thread", thread_attributes
, thread_children
,
2469 GDB_XML_EF_REPEATABLE
| GDB_XML_EF_OPTIONAL
,
2470 start_thread
, end_thread
},
2471 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
2474 const struct gdb_xml_element threads_elements
[] = {
2475 { "threads", NULL
, threads_children
,
2476 GDB_XML_EF_NONE
, NULL
, NULL
},
2477 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
2483 * Find all threads for info threads command.
2484 * Uses new thread protocol contributed by Cisco.
2485 * Falls back and attempts to use the older method (above)
2486 * if the target doesn't respond to the new method.
2490 remote_threads_info (struct target_ops
*ops
)
2492 struct remote_state
*rs
= get_remote_state ();
2496 if (remote_desc
== 0) /* paranoia */
2497 error (_("Command can only be used when connected to the remote target."));
2499 #if defined(HAVE_LIBEXPAT)
2500 if (remote_protocol_packets
[PACKET_qXfer_threads
].support
== PACKET_ENABLE
)
2502 char *xml
= target_read_stralloc (¤t_target
,
2503 TARGET_OBJECT_THREADS
, NULL
);
2505 struct cleanup
*back_to
= make_cleanup (xfree
, xml
);
2508 struct gdb_xml_parser
*parser
;
2509 struct threads_parsing_context context
;
2510 struct cleanup
*back_to
= make_cleanup (null_cleanup
, NULL
);
2513 parser
= gdb_xml_create_parser_and_cleanup (_("threads"),
2517 gdb_xml_use_dtd (parser
, "threads.dtd");
2519 if (gdb_xml_parse (parser
, xml
) == 0)
2522 struct thread_item
*item
;
2524 for (i
= 0; VEC_iterate (thread_item_t
, context
.items
, i
, item
); ++i
)
2526 if (!ptid_equal (item
->ptid
, null_ptid
))
2528 struct private_thread_info
*info
;
2529 /* In non-stop mode, we assume new found threads
2530 are running until proven otherwise with a
2531 stop reply. In all-stop, we can only get
2532 here if all threads are stopped. */
2533 int running
= non_stop
? 1 : 0;
2535 remote_notice_new_inferior (item
->ptid
, running
);
2537 info
= demand_private_info (item
->ptid
);
2538 info
->core
= item
->core
;
2539 info
->extra
= item
->extra
;
2542 xfree (item
->extra
);
2546 VEC_free (thread_item_t
, context
.items
);
2549 do_cleanups (back_to
);
2554 if (use_threadinfo_query
)
2556 putpkt ("qfThreadInfo");
2557 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2559 if (bufp
[0] != '\0') /* q packet recognized */
2561 while (*bufp
++ == 'm') /* reply contains one or more TID */
2565 new_thread
= read_ptid (bufp
, &bufp
);
2566 if (!ptid_equal (new_thread
, null_ptid
))
2568 /* In non-stop mode, we assume new found threads
2569 are running until proven otherwise with a
2570 stop reply. In all-stop, we can only get
2571 here if all threads are stopped. */
2572 int running
= non_stop
? 1 : 0;
2574 remote_notice_new_inferior (new_thread
, running
);
2577 while (*bufp
++ == ','); /* comma-separated list */
2578 putpkt ("qsThreadInfo");
2579 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2586 /* Only qfThreadInfo is supported in non-stop mode. */
2590 /* Else fall back to old method based on jmetzler protocol. */
2591 use_threadinfo_query
= 0;
2592 remote_find_new_threads ();
2597 * Collect a descriptive string about the given thread.
2598 * The target may say anything it wants to about the thread
2599 * (typically info about its blocked / runnable state, name, etc.).
2600 * This string will appear in the info threads display.
2602 * Optional: targets are not required to implement this function.
2606 remote_threads_extra_info (struct thread_info
*tp
)
2608 struct remote_state
*rs
= get_remote_state ();
2612 struct gdb_ext_thread_info threadinfo
;
2613 static char display_buf
[100]; /* arbitrary... */
2614 int n
= 0; /* position in display_buf */
2616 if (remote_desc
== 0) /* paranoia */
2617 internal_error (__FILE__
, __LINE__
,
2618 _("remote_threads_extra_info"));
2620 if (ptid_equal (tp
->ptid
, magic_null_ptid
)
2621 || (ptid_get_pid (tp
->ptid
) != 0 && ptid_get_tid (tp
->ptid
) == 0))
2622 /* This is the main thread which was added by GDB. The remote
2623 server doesn't know about it. */
2626 if (remote_protocol_packets
[PACKET_qXfer_threads
].support
== PACKET_ENABLE
)
2628 struct thread_info
*info
= find_thread_ptid (tp
->ptid
);
2629 if (info
&& info
->private)
2630 return info
->private->extra
;
2635 if (use_threadextra_query
)
2638 char *endb
= rs
->buf
+ get_remote_packet_size ();
2640 xsnprintf (b
, endb
- b
, "qThreadExtraInfo,");
2642 write_ptid (b
, endb
, tp
->ptid
);
2645 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2646 if (rs
->buf
[0] != 0)
2648 n
= min (strlen (rs
->buf
) / 2, sizeof (display_buf
));
2649 result
= hex2bin (rs
->buf
, (gdb_byte
*) display_buf
, n
);
2650 display_buf
[result
] = '\0';
2655 /* If the above query fails, fall back to the old method. */
2656 use_threadextra_query
= 0;
2657 set
= TAG_THREADID
| TAG_EXISTS
| TAG_THREADNAME
2658 | TAG_MOREDISPLAY
| TAG_DISPLAY
;
2659 int_to_threadref (&id
, ptid_get_tid (tp
->ptid
));
2660 if (remote_get_threadinfo (&id
, set
, &threadinfo
))
2661 if (threadinfo
.active
)
2663 if (*threadinfo
.shortname
)
2664 n
+= xsnprintf (&display_buf
[0], sizeof (display_buf
) - n
,
2665 " Name: %s,", threadinfo
.shortname
);
2666 if (*threadinfo
.display
)
2667 n
+= xsnprintf (&display_buf
[n
], sizeof (display_buf
) - n
,
2668 " State: %s,", threadinfo
.display
);
2669 if (*threadinfo
.more_display
)
2670 n
+= xsnprintf (&display_buf
[n
], sizeof (display_buf
) - n
,
2671 " Priority: %s", threadinfo
.more_display
);
2675 /* For purely cosmetic reasons, clear up trailing commas. */
2676 if (',' == display_buf
[n
-1])
2677 display_buf
[n
-1] = ' ';
2685 /* Restart the remote side; this is an extended protocol operation. */
2688 extended_remote_restart (void)
2690 struct remote_state
*rs
= get_remote_state ();
2692 /* Send the restart command; for reasons I don't understand the
2693 remote side really expects a number after the "R". */
2694 xsnprintf (rs
->buf
, get_remote_packet_size (), "R%x", 0);
2697 remote_fileio_reset ();
2700 /* Clean up connection to a remote debugger. */
2703 remote_close (int quitting
)
2705 if (remote_desc
== NULL
)
2706 return; /* already closed */
2708 /* Make sure we leave stdin registered in the event loop, and we
2709 don't leave the async SIGINT signal handler installed. */
2710 remote_terminal_ours ();
2712 serial_close (remote_desc
);
2715 /* We don't have a connection to the remote stub anymore. Get rid
2716 of all the inferiors and their threads we were controlling. */
2717 discard_all_inferiors ();
2719 /* We're no longer interested in any of these events. */
2720 discard_pending_stop_replies (-1);
2722 if (remote_async_inferior_event_token
)
2723 delete_async_event_handler (&remote_async_inferior_event_token
);
2724 if (remote_async_get_pending_events_token
)
2725 delete_async_event_handler (&remote_async_get_pending_events_token
);
2728 /* Query the remote side for the text, data and bss offsets. */
2733 struct remote_state
*rs
= get_remote_state ();
2736 int lose
, num_segments
= 0, do_sections
, do_segments
;
2737 CORE_ADDR text_addr
, data_addr
, bss_addr
, segments
[2];
2738 struct section_offsets
*offs
;
2739 struct symfile_segment_data
*data
;
2741 if (symfile_objfile
== NULL
)
2744 putpkt ("qOffsets");
2745 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2748 if (buf
[0] == '\000')
2749 return; /* Return silently. Stub doesn't support
2753 warning (_("Remote failure reply: %s"), buf
);
2757 /* Pick up each field in turn. This used to be done with scanf, but
2758 scanf will make trouble if CORE_ADDR size doesn't match
2759 conversion directives correctly. The following code will work
2760 with any size of CORE_ADDR. */
2761 text_addr
= data_addr
= bss_addr
= 0;
2765 if (strncmp (ptr
, "Text=", 5) == 0)
2768 /* Don't use strtol, could lose on big values. */
2769 while (*ptr
&& *ptr
!= ';')
2770 text_addr
= (text_addr
<< 4) + fromhex (*ptr
++);
2772 if (strncmp (ptr
, ";Data=", 6) == 0)
2775 while (*ptr
&& *ptr
!= ';')
2776 data_addr
= (data_addr
<< 4) + fromhex (*ptr
++);
2781 if (!lose
&& strncmp (ptr
, ";Bss=", 5) == 0)
2784 while (*ptr
&& *ptr
!= ';')
2785 bss_addr
= (bss_addr
<< 4) + fromhex (*ptr
++);
2787 if (bss_addr
!= data_addr
)
2788 warning (_("Target reported unsupported offsets: %s"), buf
);
2793 else if (strncmp (ptr
, "TextSeg=", 8) == 0)
2796 /* Don't use strtol, could lose on big values. */
2797 while (*ptr
&& *ptr
!= ';')
2798 text_addr
= (text_addr
<< 4) + fromhex (*ptr
++);
2801 if (strncmp (ptr
, ";DataSeg=", 9) == 0)
2804 while (*ptr
&& *ptr
!= ';')
2805 data_addr
= (data_addr
<< 4) + fromhex (*ptr
++);
2813 error (_("Malformed response to offset query, %s"), buf
);
2814 else if (*ptr
!= '\0')
2815 warning (_("Target reported unsupported offsets: %s"), buf
);
2817 offs
= ((struct section_offsets
*)
2818 alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
)));
2819 memcpy (offs
, symfile_objfile
->section_offsets
,
2820 SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
));
2822 data
= get_symfile_segment_data (symfile_objfile
->obfd
);
2823 do_segments
= (data
!= NULL
);
2824 do_sections
= num_segments
== 0;
2826 if (num_segments
> 0)
2828 segments
[0] = text_addr
;
2829 segments
[1] = data_addr
;
2831 /* If we have two segments, we can still try to relocate everything
2832 by assuming that the .text and .data offsets apply to the whole
2833 text and data segments. Convert the offsets given in the packet
2834 to base addresses for symfile_map_offsets_to_segments. */
2835 else if (data
&& data
->num_segments
== 2)
2837 segments
[0] = data
->segment_bases
[0] + text_addr
;
2838 segments
[1] = data
->segment_bases
[1] + data_addr
;
2841 /* If the object file has only one segment, assume that it is text
2842 rather than data; main programs with no writable data are rare,
2843 but programs with no code are useless. Of course the code might
2844 have ended up in the data segment... to detect that we would need
2845 the permissions here. */
2846 else if (data
&& data
->num_segments
== 1)
2848 segments
[0] = data
->segment_bases
[0] + text_addr
;
2851 /* There's no way to relocate by segment. */
2857 int ret
= symfile_map_offsets_to_segments (symfile_objfile
->obfd
, data
,
2858 offs
, num_segments
, segments
);
2860 if (ret
== 0 && !do_sections
)
2861 error (_("Can not handle qOffsets TextSeg response with this symbol file"));
2868 free_symfile_segment_data (data
);
2872 offs
->offsets
[SECT_OFF_TEXT (symfile_objfile
)] = text_addr
;
2874 /* This is a temporary kludge to force data and bss to use the same offsets
2875 because that's what nlmconv does now. The real solution requires changes
2876 to the stub and remote.c that I don't have time to do right now. */
2878 offs
->offsets
[SECT_OFF_DATA (symfile_objfile
)] = data_addr
;
2879 offs
->offsets
[SECT_OFF_BSS (symfile_objfile
)] = data_addr
;
2882 objfile_relocate (symfile_objfile
, offs
);
2885 /* Callback for iterate_over_threads. Set the STOP_REQUESTED flags in
2886 threads we know are stopped already. This is used during the
2887 initial remote connection in non-stop mode --- threads that are
2888 reported as already being stopped are left stopped. */
2891 set_stop_requested_callback (struct thread_info
*thread
, void *data
)
2893 /* If we have a stop reply for this thread, it must be stopped. */
2894 if (peek_stop_reply (thread
->ptid
))
2895 set_stop_requested (thread
->ptid
, 1);
2900 /* Stub for catch_exception. */
2902 struct start_remote_args
2906 /* The current target. */
2907 struct target_ops
*target
;
2909 /* Non-zero if this is an extended-remote target. */
2913 /* Send interrupt_sequence to remote target. */
2915 send_interrupt_sequence ()
2917 if (interrupt_sequence_mode
== interrupt_sequence_control_c
)
2918 serial_write (remote_desc
, "\x03", 1);
2919 else if (interrupt_sequence_mode
== interrupt_sequence_break
)
2920 serial_send_break (remote_desc
);
2921 else if (interrupt_sequence_mode
== interrupt_sequence_break_g
)
2923 serial_send_break (remote_desc
);
2924 serial_write (remote_desc
, "g", 1);
2927 internal_error (__FILE__
, __LINE__
,
2928 _("Invalid value for interrupt_sequence_mode: %s."),
2929 interrupt_sequence_mode
);
2933 remote_start_remote (struct ui_out
*uiout
, void *opaque
)
2935 struct start_remote_args
*args
= opaque
;
2936 struct remote_state
*rs
= get_remote_state ();
2937 struct packet_config
*noack_config
;
2938 char *wait_status
= NULL
;
2940 immediate_quit
++; /* Allow user to interrupt it. */
2942 /* Ack any packet which the remote side has already sent. */
2943 serial_write (remote_desc
, "+", 1);
2945 if (interrupt_on_connect
)
2946 send_interrupt_sequence ();
2948 /* The first packet we send to the target is the optional "supported
2949 packets" request. If the target can answer this, it will tell us
2950 which later probes to skip. */
2951 remote_query_supported ();
2953 /* Next, we possibly activate noack mode.
2955 If the QStartNoAckMode packet configuration is set to AUTO,
2956 enable noack mode if the stub reported a wish for it with
2959 If set to TRUE, then enable noack mode even if the stub didn't
2960 report it in qSupported. If the stub doesn't reply OK, the
2961 session ends with an error.
2963 If FALSE, then don't activate noack mode, regardless of what the
2964 stub claimed should be the default with qSupported. */
2966 noack_config
= &remote_protocol_packets
[PACKET_QStartNoAckMode
];
2968 if (noack_config
->detect
== AUTO_BOOLEAN_TRUE
2969 || (noack_config
->detect
== AUTO_BOOLEAN_AUTO
2970 && noack_config
->support
== PACKET_ENABLE
))
2972 putpkt ("QStartNoAckMode");
2973 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2974 if (packet_ok (rs
->buf
, noack_config
) == PACKET_OK
)
2978 if (args
->extended_p
)
2980 /* Tell the remote that we are using the extended protocol. */
2982 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2985 /* Next, if the target can specify a description, read it. We do
2986 this before anything involving memory or registers. */
2987 target_find_description ();
2989 /* Next, now that we know something about the target, update the
2990 address spaces in the program spaces. */
2991 update_address_spaces ();
2993 /* On OSs where the list of libraries is global to all
2994 processes, we fetch them early. */
2995 if (gdbarch_has_global_solist (target_gdbarch
))
2996 solib_add (NULL
, args
->from_tty
, args
->target
, auto_solib_add
);
3000 if (!rs
->non_stop_aware
)
3001 error (_("Non-stop mode requested, but remote does not support non-stop"));
3003 putpkt ("QNonStop:1");
3004 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3006 if (strcmp (rs
->buf
, "OK") != 0)
3007 error ("Remote refused setting non-stop mode with: %s", rs
->buf
);
3009 /* Find about threads and processes the stub is already
3010 controlling. We default to adding them in the running state.
3011 The '?' query below will then tell us about which threads are
3013 remote_threads_info (args
->target
);
3015 else if (rs
->non_stop_aware
)
3017 /* Don't assume that the stub can operate in all-stop mode.
3018 Request it explicitely. */
3019 putpkt ("QNonStop:0");
3020 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3022 if (strcmp (rs
->buf
, "OK") != 0)
3023 error ("Remote refused setting all-stop mode with: %s", rs
->buf
);
3026 /* Check whether the target is running now. */
3028 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3032 if (rs
->buf
[0] == 'W' || rs
->buf
[0] == 'X')
3034 if (!args
->extended_p
)
3035 error (_("The target is not running (try extended-remote?)"));
3037 /* We're connected, but not running. Drop out before we
3038 call start_remote. */
3043 /* Save the reply for later. */
3044 wait_status
= alloca (strlen (rs
->buf
) + 1);
3045 strcpy (wait_status
, rs
->buf
);
3048 /* Let the stub know that we want it to return the thread. */
3049 set_continue_thread (minus_one_ptid
);
3051 /* Without this, some commands which require an active target
3052 (such as kill) won't work. This variable serves (at least)
3053 double duty as both the pid of the target process (if it has
3054 such), and as a flag indicating that a target is active.
3055 These functions should be split out into seperate variables,
3056 especially since GDB will someday have a notion of debugging
3057 several processes. */
3058 inferior_ptid
= magic_null_ptid
;
3060 /* Now, if we have thread information, update inferior_ptid. */
3061 inferior_ptid
= remote_current_thread (inferior_ptid
);
3063 remote_add_inferior (ptid_get_pid (inferior_ptid
), -1);
3065 /* Always add the main thread. */
3066 add_thread_silent (inferior_ptid
);
3068 get_offsets (); /* Get text, data & bss offsets. */
3070 /* If we could not find a description using qXfer, and we know
3071 how to do it some other way, try again. This is not
3072 supported for non-stop; it could be, but it is tricky if
3073 there are no stopped threads when we connect. */
3074 if (remote_read_description_p (args
->target
)
3075 && gdbarch_target_desc (target_gdbarch
) == NULL
)
3077 target_clear_description ();
3078 target_find_description ();
3081 /* Use the previously fetched status. */
3082 gdb_assert (wait_status
!= NULL
);
3083 strcpy (rs
->buf
, wait_status
);
3084 rs
->cached_wait_status
= 1;
3087 start_remote (args
->from_tty
); /* Initialize gdb process mechanisms. */
3091 /* Clear WFI global state. Do this before finding about new
3092 threads and inferiors, and setting the current inferior.
3093 Otherwise we would clear the proceed status of the current
3094 inferior when we want its stop_soon state to be preserved
3095 (see notice_new_inferior). */
3096 init_wait_for_inferior ();
3098 /* In non-stop, we will either get an "OK", meaning that there
3099 are no stopped threads at this time; or, a regular stop
3100 reply. In the latter case, there may be more than one thread
3101 stopped --- we pull them all out using the vStopped
3103 if (strcmp (rs
->buf
, "OK") != 0)
3105 struct stop_reply
*stop_reply
;
3106 struct cleanup
*old_chain
;
3108 stop_reply
= stop_reply_xmalloc ();
3109 old_chain
= make_cleanup (do_stop_reply_xfree
, stop_reply
);
3111 remote_parse_stop_reply (rs
->buf
, stop_reply
);
3112 discard_cleanups (old_chain
);
3114 /* get_pending_stop_replies acks this one, and gets the rest
3116 pending_stop_reply
= stop_reply
;
3117 remote_get_pending_stop_replies ();
3119 /* Make sure that threads that were stopped remain
3121 iterate_over_threads (set_stop_requested_callback
, NULL
);
3124 if (target_can_async_p ())
3125 target_async (inferior_event_handler
, 0);
3127 if (thread_count () == 0)
3129 if (!args
->extended_p
)
3130 error (_("The target is not running (try extended-remote?)"));
3132 /* We're connected, but not running. Drop out before we
3133 call start_remote. */
3137 /* Let the stub know that we want it to return the thread. */
3139 /* Force the stub to choose a thread. */
3140 set_general_thread (null_ptid
);
3143 inferior_ptid
= remote_current_thread (minus_one_ptid
);
3144 if (ptid_equal (inferior_ptid
, minus_one_ptid
))
3145 error (_("remote didn't report the current thread in non-stop mode"));
3147 get_offsets (); /* Get text, data & bss offsets. */
3149 /* In non-stop mode, any cached wait status will be stored in
3150 the stop reply queue. */
3151 gdb_assert (wait_status
== NULL
);
3154 /* If we connected to a live target, do some additional setup. */
3155 if (target_has_execution
)
3157 if (exec_bfd
) /* No use without an exec file. */
3158 remote_check_symbols (symfile_objfile
);
3161 /* Possibly the target has been engaged in a trace run started
3162 previously; find out where things are at. */
3163 if (rs
->disconnected_tracing
)
3165 struct uploaded_tp
*uploaded_tps
= NULL
;
3166 struct uploaded_tsv
*uploaded_tsvs
= NULL
;
3168 remote_get_trace_status (current_trace_status ());
3169 if (current_trace_status ()->running
)
3170 printf_filtered (_("Trace is already running on the target.\n"));
3172 /* Get trace state variables first, they may be checked when
3173 parsing uploaded commands. */
3175 remote_upload_trace_state_variables (&uploaded_tsvs
);
3177 merge_uploaded_trace_state_variables (&uploaded_tsvs
);
3179 remote_upload_tracepoints (&uploaded_tps
);
3181 merge_uploaded_tracepoints (&uploaded_tps
);
3184 /* If breakpoints are global, insert them now. */
3185 if (gdbarch_has_global_breakpoints (target_gdbarch
)
3186 && breakpoints_always_inserted_mode ())
3187 insert_breakpoints ();
3190 /* Open a connection to a remote debugger.
3191 NAME is the filename used for communication. */
3194 remote_open (char *name
, int from_tty
)
3196 remote_open_1 (name
, from_tty
, &remote_ops
, 0);
3199 /* Open a connection to a remote debugger using the extended
3200 remote gdb protocol. NAME is the filename used for communication. */
3203 extended_remote_open (char *name
, int from_tty
)
3205 remote_open_1 (name
, from_tty
, &extended_remote_ops
, 1 /*extended_p */);
3208 /* Generic code for opening a connection to a remote target. */
3211 init_all_packet_configs (void)
3214 for (i
= 0; i
< PACKET_MAX
; i
++)
3215 update_packet_config (&remote_protocol_packets
[i
]);
3218 /* Symbol look-up. */
3221 remote_check_symbols (struct objfile
*objfile
)
3223 struct remote_state
*rs
= get_remote_state ();
3224 char *msg
, *reply
, *tmp
;
3225 struct minimal_symbol
*sym
;
3228 if (remote_protocol_packets
[PACKET_qSymbol
].support
== PACKET_DISABLE
)
3231 /* Make sure the remote is pointing at the right process. */
3232 set_general_process ();
3234 /* Allocate a message buffer. We can't reuse the input buffer in RS,
3235 because we need both at the same time. */
3236 msg
= alloca (get_remote_packet_size ());
3238 /* Invite target to request symbol lookups. */
3240 putpkt ("qSymbol::");
3241 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3242 packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_qSymbol
]);
3245 while (strncmp (reply
, "qSymbol:", 8) == 0)
3248 end
= hex2bin (tmp
, (gdb_byte
*) msg
, strlen (tmp
) / 2);
3250 sym
= lookup_minimal_symbol (msg
, NULL
, NULL
);
3252 xsnprintf (msg
, get_remote_packet_size (), "qSymbol::%s", &reply
[8]);
3255 int addr_size
= gdbarch_addr_bit (target_gdbarch
) / 8;
3256 CORE_ADDR sym_addr
= SYMBOL_VALUE_ADDRESS (sym
);
3258 /* If this is a function address, return the start of code
3259 instead of any data function descriptor. */
3260 sym_addr
= gdbarch_convert_from_func_ptr_addr (target_gdbarch
,
3264 xsnprintf (msg
, get_remote_packet_size (), "qSymbol:%s:%s",
3265 phex_nz (sym_addr
, addr_size
), &reply
[8]);
3269 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3274 static struct serial
*
3275 remote_serial_open (char *name
)
3277 static int udp_warning
= 0;
3279 /* FIXME: Parsing NAME here is a hack. But we want to warn here instead
3280 of in ser-tcp.c, because it is the remote protocol assuming that the
3281 serial connection is reliable and not the serial connection promising
3283 if (!udp_warning
&& strncmp (name
, "udp:", 4) == 0)
3286 The remote protocol may be unreliable over UDP.\n\
3287 Some events may be lost, rendering further debugging impossible."));
3291 return serial_open (name
);
3294 /* This type describes each known response to the qSupported
3296 struct protocol_feature
3298 /* The name of this protocol feature. */
3301 /* The default for this protocol feature. */
3302 enum packet_support default_support
;
3304 /* The function to call when this feature is reported, or after
3305 qSupported processing if the feature is not supported.
3306 The first argument points to this structure. The second
3307 argument indicates whether the packet requested support be
3308 enabled, disabled, or probed (or the default, if this function
3309 is being called at the end of processing and this feature was
3310 not reported). The third argument may be NULL; if not NULL, it
3311 is a NUL-terminated string taken from the packet following
3312 this feature's name and an equals sign. */
3313 void (*func
) (const struct protocol_feature
*, enum packet_support
,
3316 /* The corresponding packet for this feature. Only used if
3317 FUNC is remote_supported_packet. */
3322 remote_supported_packet (const struct protocol_feature
*feature
,
3323 enum packet_support support
,
3324 const char *argument
)
3328 warning (_("Remote qSupported response supplied an unexpected value for"
3329 " \"%s\"."), feature
->name
);
3333 if (remote_protocol_packets
[feature
->packet
].support
3334 == PACKET_SUPPORT_UNKNOWN
)
3335 remote_protocol_packets
[feature
->packet
].support
= support
;
3339 remote_packet_size (const struct protocol_feature
*feature
,
3340 enum packet_support support
, const char *value
)
3342 struct remote_state
*rs
= get_remote_state ();
3347 if (support
!= PACKET_ENABLE
)
3350 if (value
== NULL
|| *value
== '\0')
3352 warning (_("Remote target reported \"%s\" without a size."),
3358 packet_size
= strtol (value
, &value_end
, 16);
3359 if (errno
!= 0 || *value_end
!= '\0' || packet_size
< 0)
3361 warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."),
3362 feature
->name
, value
);
3366 if (packet_size
> MAX_REMOTE_PACKET_SIZE
)
3368 warning (_("limiting remote suggested packet size (%d bytes) to %d"),
3369 packet_size
, MAX_REMOTE_PACKET_SIZE
);
3370 packet_size
= MAX_REMOTE_PACKET_SIZE
;
3373 /* Record the new maximum packet size. */
3374 rs
->explicit_packet_size
= packet_size
;
3378 remote_multi_process_feature (const struct protocol_feature
*feature
,
3379 enum packet_support support
, const char *value
)
3381 struct remote_state
*rs
= get_remote_state ();
3382 rs
->multi_process_aware
= (support
== PACKET_ENABLE
);
3386 remote_non_stop_feature (const struct protocol_feature
*feature
,
3387 enum packet_support support
, const char *value
)
3389 struct remote_state
*rs
= get_remote_state ();
3390 rs
->non_stop_aware
= (support
== PACKET_ENABLE
);
3394 remote_cond_tracepoint_feature (const struct protocol_feature
*feature
,
3395 enum packet_support support
,
3398 struct remote_state
*rs
= get_remote_state ();
3399 rs
->cond_tracepoints
= (support
== PACKET_ENABLE
);
3403 remote_fast_tracepoint_feature (const struct protocol_feature
*feature
,
3404 enum packet_support support
,
3407 struct remote_state
*rs
= get_remote_state ();
3408 rs
->fast_tracepoints
= (support
== PACKET_ENABLE
);
3412 remote_disconnected_tracing_feature (const struct protocol_feature
*feature
,
3413 enum packet_support support
,
3416 struct remote_state
*rs
= get_remote_state ();
3417 rs
->disconnected_tracing
= (support
== PACKET_ENABLE
);
3420 static struct protocol_feature remote_protocol_features
[] = {
3421 { "PacketSize", PACKET_DISABLE
, remote_packet_size
, -1 },
3422 { "qXfer:auxv:read", PACKET_DISABLE
, remote_supported_packet
,
3423 PACKET_qXfer_auxv
},
3424 { "qXfer:features:read", PACKET_DISABLE
, remote_supported_packet
,
3425 PACKET_qXfer_features
},
3426 { "qXfer:libraries:read", PACKET_DISABLE
, remote_supported_packet
,
3427 PACKET_qXfer_libraries
},
3428 { "qXfer:memory-map:read", PACKET_DISABLE
, remote_supported_packet
,
3429 PACKET_qXfer_memory_map
},
3430 { "qXfer:spu:read", PACKET_DISABLE
, remote_supported_packet
,
3431 PACKET_qXfer_spu_read
},
3432 { "qXfer:spu:write", PACKET_DISABLE
, remote_supported_packet
,
3433 PACKET_qXfer_spu_write
},
3434 { "qXfer:osdata:read", PACKET_DISABLE
, remote_supported_packet
,
3435 PACKET_qXfer_osdata
},
3436 { "qXfer:threads:read", PACKET_DISABLE
, remote_supported_packet
,
3437 PACKET_qXfer_threads
},
3438 { "QPassSignals", PACKET_DISABLE
, remote_supported_packet
,
3439 PACKET_QPassSignals
},
3440 { "QStartNoAckMode", PACKET_DISABLE
, remote_supported_packet
,
3441 PACKET_QStartNoAckMode
},
3442 { "multiprocess", PACKET_DISABLE
, remote_multi_process_feature
, -1 },
3443 { "QNonStop", PACKET_DISABLE
, remote_non_stop_feature
, -1 },
3444 { "qXfer:siginfo:read", PACKET_DISABLE
, remote_supported_packet
,
3445 PACKET_qXfer_siginfo_read
},
3446 { "qXfer:siginfo:write", PACKET_DISABLE
, remote_supported_packet
,
3447 PACKET_qXfer_siginfo_write
},
3448 { "ConditionalTracepoints", PACKET_DISABLE
, remote_cond_tracepoint_feature
,
3449 PACKET_ConditionalTracepoints
},
3450 { "FastTracepoints", PACKET_DISABLE
, remote_fast_tracepoint_feature
,
3451 PACKET_FastTracepoints
},
3452 { "DisconnectedTracing", PACKET_DISABLE
, remote_disconnected_tracing_feature
,
3454 { "ReverseContinue", PACKET_DISABLE
, remote_supported_packet
,
3456 { "ReverseStep", PACKET_DISABLE
, remote_supported_packet
,
3461 remote_query_supported (void)
3463 struct remote_state
*rs
= get_remote_state ();
3466 unsigned char seen
[ARRAY_SIZE (remote_protocol_features
)];
3468 /* The packet support flags are handled differently for this packet
3469 than for most others. We treat an error, a disabled packet, and
3470 an empty response identically: any features which must be reported
3471 to be used will be automatically disabled. An empty buffer
3472 accomplishes this, since that is also the representation for a list
3473 containing no features. */
3476 if (remote_protocol_packets
[PACKET_qSupported
].support
!= PACKET_DISABLE
)
3478 const char *qsupported
= gdbarch_qsupported (target_gdbarch
);
3483 q
= concat ("qSupported:multiprocess+;", qsupported
, NULL
);
3485 q
= concat ("qSupported:", qsupported
, NULL
);
3492 putpkt ("qSupported:multiprocess+");
3494 putpkt ("qSupported");
3497 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3499 /* If an error occured, warn, but do not return - just reset the
3500 buffer to empty and go on to disable features. */
3501 if (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_qSupported
])
3504 warning (_("Remote failure reply: %s"), rs
->buf
);
3509 memset (seen
, 0, sizeof (seen
));
3514 enum packet_support is_supported
;
3515 char *p
, *end
, *name_end
, *value
;
3517 /* First separate out this item from the rest of the packet. If
3518 there's another item after this, we overwrite the separator
3519 (terminated strings are much easier to work with). */
3521 end
= strchr (p
, ';');
3524 end
= p
+ strlen (p
);
3534 warning (_("empty item in \"qSupported\" response"));
3539 name_end
= strchr (p
, '=');
3542 /* This is a name=value entry. */
3543 is_supported
= PACKET_ENABLE
;
3544 value
= name_end
+ 1;
3553 is_supported
= PACKET_ENABLE
;
3557 is_supported
= PACKET_DISABLE
;
3561 is_supported
= PACKET_SUPPORT_UNKNOWN
;
3565 warning (_("unrecognized item \"%s\" in \"qSupported\" response"), p
);
3571 for (i
= 0; i
< ARRAY_SIZE (remote_protocol_features
); i
++)
3572 if (strcmp (remote_protocol_features
[i
].name
, p
) == 0)
3574 const struct protocol_feature
*feature
;
3577 feature
= &remote_protocol_features
[i
];
3578 feature
->func (feature
, is_supported
, value
);
3583 /* If we increased the packet size, make sure to increase the global
3584 buffer size also. We delay this until after parsing the entire
3585 qSupported packet, because this is the same buffer we were
3587 if (rs
->buf_size
< rs
->explicit_packet_size
)
3589 rs
->buf_size
= rs
->explicit_packet_size
;
3590 rs
->buf
= xrealloc (rs
->buf
, rs
->buf_size
);
3593 /* Handle the defaults for unmentioned features. */
3594 for (i
= 0; i
< ARRAY_SIZE (remote_protocol_features
); i
++)
3597 const struct protocol_feature
*feature
;
3599 feature
= &remote_protocol_features
[i
];
3600 feature
->func (feature
, feature
->default_support
, NULL
);
3606 remote_open_1 (char *name
, int from_tty
, struct target_ops
*target
, int extended_p
)
3608 struct remote_state
*rs
= get_remote_state ();
3611 error (_("To open a remote debug connection, you need to specify what\n"
3612 "serial device is attached to the remote system\n"
3613 "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."));
3615 /* See FIXME above. */
3616 if (!target_async_permitted
)
3617 wait_forever_enabled_p
= 1;
3619 /* If we're connected to a running target, target_preopen will kill it.
3620 But if we're connected to a target system with no running process,
3621 then we will still be connected when it returns. Ask this question
3622 first, before target_preopen has a chance to kill anything. */
3623 if (remote_desc
!= NULL
&& !have_inferiors ())
3626 || query (_("Already connected to a remote target. Disconnect? ")))
3629 error (_("Still connected."));
3632 target_preopen (from_tty
);
3634 unpush_target (target
);
3636 /* This time without a query. If we were connected to an
3637 extended-remote target and target_preopen killed the running
3638 process, we may still be connected. If we are starting "target
3639 remote" now, the extended-remote target will not have been
3640 removed by unpush_target. */
3641 if (remote_desc
!= NULL
&& !have_inferiors ())
3644 /* Make sure we send the passed signals list the next time we resume. */
3645 xfree (last_pass_packet
);
3646 last_pass_packet
= NULL
;
3648 remote_fileio_reset ();
3649 reopen_exec_file ();
3652 remote_desc
= remote_serial_open (name
);
3654 perror_with_name (name
);
3656 if (baud_rate
!= -1)
3658 if (serial_setbaudrate (remote_desc
, baud_rate
))
3660 /* The requested speed could not be set. Error out to
3661 top level after closing remote_desc. Take care to
3662 set remote_desc to NULL to avoid closing remote_desc
3664 serial_close (remote_desc
);
3666 perror_with_name (name
);
3670 serial_raw (remote_desc
);
3672 /* If there is something sitting in the buffer we might take it as a
3673 response to a command, which would be bad. */
3674 serial_flush_input (remote_desc
);
3678 puts_filtered ("Remote debugging using ");
3679 puts_filtered (name
);
3680 puts_filtered ("\n");
3682 push_target (target
); /* Switch to using remote target now. */
3684 /* Register extra event sources in the event loop. */
3685 remote_async_inferior_event_token
3686 = create_async_event_handler (remote_async_inferior_event_handler
,
3688 remote_async_get_pending_events_token
3689 = create_async_event_handler (remote_async_get_pending_events_handler
,
3692 /* Reset the target state; these things will be queried either by
3693 remote_query_supported or as they are needed. */
3694 init_all_packet_configs ();
3695 rs
->cached_wait_status
= 0;
3696 rs
->explicit_packet_size
= 0;
3698 rs
->multi_process_aware
= 0;
3699 rs
->extended
= extended_p
;
3700 rs
->non_stop_aware
= 0;
3701 rs
->waiting_for_stop_reply
= 0;
3702 rs
->ctrlc_pending_p
= 0;
3704 general_thread
= not_sent_ptid
;
3705 continue_thread
= not_sent_ptid
;
3707 /* Probe for ability to use "ThreadInfo" query, as required. */
3708 use_threadinfo_query
= 1;
3709 use_threadextra_query
= 1;
3711 if (target_async_permitted
)
3713 /* With this target we start out by owning the terminal. */
3714 remote_async_terminal_ours_p
= 1;
3716 /* FIXME: cagney/1999-09-23: During the initial connection it is
3717 assumed that the target is already ready and able to respond to
3718 requests. Unfortunately remote_start_remote() eventually calls
3719 wait_for_inferior() with no timeout. wait_forever_enabled_p gets
3720 around this. Eventually a mechanism that allows
3721 wait_for_inferior() to expect/get timeouts will be
3723 wait_forever_enabled_p
= 0;
3726 /* First delete any symbols previously loaded from shared libraries. */
3727 no_shared_libraries (NULL
, 0);
3730 init_thread_list ();
3732 /* Start the remote connection. If error() or QUIT, discard this
3733 target (we'd otherwise be in an inconsistent state) and then
3734 propogate the error on up the exception chain. This ensures that
3735 the caller doesn't stumble along blindly assuming that the
3736 function succeeded. The CLI doesn't have this problem but other
3737 UI's, such as MI do.
3739 FIXME: cagney/2002-05-19: Instead of re-throwing the exception,
3740 this function should return an error indication letting the
3741 caller restore the previous state. Unfortunately the command
3742 ``target remote'' is directly wired to this function making that
3743 impossible. On a positive note, the CLI side of this problem has
3744 been fixed - the function set_cmd_context() makes it possible for
3745 all the ``target ....'' commands to share a common callback
3746 function. See cli-dump.c. */
3748 struct gdb_exception ex
;
3749 struct start_remote_args args
;
3751 args
.from_tty
= from_tty
;
3752 args
.target
= target
;
3753 args
.extended_p
= extended_p
;
3755 ex
= catch_exception (uiout
, remote_start_remote
, &args
, RETURN_MASK_ALL
);
3758 /* Pop the partially set up target - unless something else did
3759 already before throwing the exception. */
3760 if (remote_desc
!= NULL
)
3762 if (target_async_permitted
)
3763 wait_forever_enabled_p
= 1;
3764 throw_exception (ex
);
3768 if (target_async_permitted
)
3769 wait_forever_enabled_p
= 1;
3772 /* This takes a program previously attached to and detaches it. After
3773 this is done, GDB can be used to debug some other program. We
3774 better not have left any breakpoints in the target program or it'll
3775 die when it hits one. */
3778 remote_detach_1 (char *args
, int from_tty
, int extended
)
3780 int pid
= ptid_get_pid (inferior_ptid
);
3781 struct remote_state
*rs
= get_remote_state ();
3784 error (_("Argument given to \"detach\" when remotely debugging."));
3786 if (!target_has_execution
)
3787 error (_("No process to detach from."));
3789 /* Tell the remote target to detach. */
3790 if (remote_multi_process_p (rs
))
3791 sprintf (rs
->buf
, "D;%x", pid
);
3793 strcpy (rs
->buf
, "D");
3796 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3798 if (rs
->buf
[0] == 'O' && rs
->buf
[1] == 'K')
3800 else if (rs
->buf
[0] == '\0')
3801 error (_("Remote doesn't know how to detach"));
3803 error (_("Can't detach process."));
3807 if (remote_multi_process_p (rs
))
3808 printf_filtered (_("Detached from remote %s.\n"),
3809 target_pid_to_str (pid_to_ptid (pid
)));
3813 puts_filtered (_("Detached from remote process.\n"));
3815 puts_filtered (_("Ending remote debugging.\n"));
3819 discard_pending_stop_replies (pid
);
3820 target_mourn_inferior ();
3824 remote_detach (struct target_ops
*ops
, char *args
, int from_tty
)
3826 remote_detach_1 (args
, from_tty
, 0);
3830 extended_remote_detach (struct target_ops
*ops
, char *args
, int from_tty
)
3832 remote_detach_1 (args
, from_tty
, 1);
3835 /* Same as remote_detach, but don't send the "D" packet; just disconnect. */
3838 remote_disconnect (struct target_ops
*target
, char *args
, int from_tty
)
3841 error (_("Argument given to \"disconnect\" when remotely debugging."));
3843 /* Make sure we unpush even the extended remote targets; mourn
3844 won't do it. So call remote_mourn_1 directly instead of
3845 target_mourn_inferior. */
3846 remote_mourn_1 (target
);
3849 puts_filtered ("Ending remote debugging.\n");
3852 /* Attach to the process specified by ARGS. If FROM_TTY is non-zero,
3853 be chatty about it. */
3856 extended_remote_attach_1 (struct target_ops
*target
, char *args
, int from_tty
)
3858 struct remote_state
*rs
= get_remote_state ();
3860 char *wait_status
= NULL
;
3862 pid
= parse_pid_to_attach (args
);
3864 /* Remote PID can be freely equal to getpid, do not check it here the same
3865 way as in other targets. */
3867 if (remote_protocol_packets
[PACKET_vAttach
].support
== PACKET_DISABLE
)
3868 error (_("This target does not support attaching to a process"));
3870 sprintf (rs
->buf
, "vAttach;%x", pid
);
3872 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3874 if (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_vAttach
]) == PACKET_OK
)
3877 printf_unfiltered (_("Attached to %s\n"),
3878 target_pid_to_str (pid_to_ptid (pid
)));
3882 /* Save the reply for later. */
3883 wait_status
= alloca (strlen (rs
->buf
) + 1);
3884 strcpy (wait_status
, rs
->buf
);
3886 else if (strcmp (rs
->buf
, "OK") != 0)
3887 error (_("Attaching to %s failed with: %s"),
3888 target_pid_to_str (pid_to_ptid (pid
)),
3891 else if (remote_protocol_packets
[PACKET_vAttach
].support
== PACKET_DISABLE
)
3892 error (_("This target does not support attaching to a process"));
3894 error (_("Attaching to %s failed"),
3895 target_pid_to_str (pid_to_ptid (pid
)));
3897 set_current_inferior (remote_add_inferior (pid
, 1));
3899 inferior_ptid
= pid_to_ptid (pid
);
3903 struct thread_info
*thread
;
3905 /* Get list of threads. */
3906 remote_threads_info (target
);
3908 thread
= first_thread_of_process (pid
);
3910 inferior_ptid
= thread
->ptid
;
3912 inferior_ptid
= pid_to_ptid (pid
);
3914 /* Invalidate our notion of the remote current thread. */
3915 record_currthread (minus_one_ptid
);
3919 /* Now, if we have thread information, update inferior_ptid. */
3920 inferior_ptid
= remote_current_thread (inferior_ptid
);
3922 /* Add the main thread to the thread list. */
3923 add_thread_silent (inferior_ptid
);
3926 /* Next, if the target can specify a description, read it. We do
3927 this before anything involving memory or registers. */
3928 target_find_description ();
3932 /* Use the previously fetched status. */
3933 gdb_assert (wait_status
!= NULL
);
3935 if (target_can_async_p ())
3937 struct stop_reply
*stop_reply
;
3938 struct cleanup
*old_chain
;
3940 stop_reply
= stop_reply_xmalloc ();
3941 old_chain
= make_cleanup (do_stop_reply_xfree
, stop_reply
);
3942 remote_parse_stop_reply (wait_status
, stop_reply
);
3943 discard_cleanups (old_chain
);
3944 push_stop_reply (stop_reply
);
3946 target_async (inferior_event_handler
, 0);
3950 gdb_assert (wait_status
!= NULL
);
3951 strcpy (rs
->buf
, wait_status
);
3952 rs
->cached_wait_status
= 1;
3956 gdb_assert (wait_status
== NULL
);
3960 extended_remote_attach (struct target_ops
*ops
, char *args
, int from_tty
)
3962 extended_remote_attach_1 (ops
, args
, from_tty
);
3965 /* Convert hex digit A to a number. */
3970 if (a
>= '0' && a
<= '9')
3972 else if (a
>= 'a' && a
<= 'f')
3973 return a
- 'a' + 10;
3974 else if (a
>= 'A' && a
<= 'F')
3975 return a
- 'A' + 10;
3977 error (_("Reply contains invalid hex digit %d"), a
);
3981 hex2bin (const char *hex
, gdb_byte
*bin
, int count
)
3985 for (i
= 0; i
< count
; i
++)
3987 if (hex
[0] == 0 || hex
[1] == 0)
3989 /* Hex string is short, or of uneven length.
3990 Return the count that has been converted so far. */
3993 *bin
++ = fromhex (hex
[0]) * 16 + fromhex (hex
[1]);
3999 /* Convert number NIB to a hex digit. */
4007 return 'a' + nib
- 10;
4011 bin2hex (const gdb_byte
*bin
, char *hex
, int count
)
4014 /* May use a length, or a nul-terminated string as input. */
4016 count
= strlen ((char *) bin
);
4018 for (i
= 0; i
< count
; i
++)
4020 *hex
++ = tohex ((*bin
>> 4) & 0xf);
4021 *hex
++ = tohex (*bin
++ & 0xf);
4027 /* Check for the availability of vCont. This function should also check
4031 remote_vcont_probe (struct remote_state
*rs
)
4035 strcpy (rs
->buf
, "vCont?");
4037 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4040 /* Make sure that the features we assume are supported. */
4041 if (strncmp (buf
, "vCont", 5) == 0)
4044 int support_s
, support_S
, support_c
, support_C
;
4050 rs
->support_vCont_t
= 0;
4051 while (p
&& *p
== ';')
4054 if (*p
== 's' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4056 else if (*p
== 'S' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4058 else if (*p
== 'c' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4060 else if (*p
== 'C' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4062 else if (*p
== 't' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4063 rs
->support_vCont_t
= 1;
4065 p
= strchr (p
, ';');
4068 /* If s, S, c, and C are not all supported, we can't use vCont. Clearing
4069 BUF will make packet_ok disable the packet. */
4070 if (!support_s
|| !support_S
|| !support_c
|| !support_C
)
4074 packet_ok (buf
, &remote_protocol_packets
[PACKET_vCont
]);
4077 /* Helper function for building "vCont" resumptions. Write a
4078 resumption to P. ENDP points to one-passed-the-end of the buffer
4079 we're allowed to write to. Returns BUF+CHARACTERS_WRITTEN. The
4080 thread to be resumed is PTID; STEP and SIGGNAL indicate whether the
4081 resumed thread should be single-stepped and/or signalled. If PTID
4082 equals minus_one_ptid, then all threads are resumed; if PTID
4083 represents a process, then all threads of the process are resumed;
4084 the thread to be stepped and/or signalled is given in the global
4088 append_resumption (char *p
, char *endp
,
4089 ptid_t ptid
, int step
, enum target_signal siggnal
)
4091 struct remote_state
*rs
= get_remote_state ();
4093 if (step
&& siggnal
!= TARGET_SIGNAL_0
)
4094 p
+= xsnprintf (p
, endp
- p
, ";S%02x", siggnal
);
4096 p
+= xsnprintf (p
, endp
- p
, ";s");
4097 else if (siggnal
!= TARGET_SIGNAL_0
)
4098 p
+= xsnprintf (p
, endp
- p
, ";C%02x", siggnal
);
4100 p
+= xsnprintf (p
, endp
- p
, ";c");
4102 if (remote_multi_process_p (rs
) && ptid_is_pid (ptid
))
4106 /* All (-1) threads of process. */
4107 nptid
= ptid_build (ptid_get_pid (ptid
), 0, -1);
4109 p
+= xsnprintf (p
, endp
- p
, ":");
4110 p
= write_ptid (p
, endp
, nptid
);
4112 else if (!ptid_equal (ptid
, minus_one_ptid
))
4114 p
+= xsnprintf (p
, endp
- p
, ":");
4115 p
= write_ptid (p
, endp
, ptid
);
4121 /* Resume the remote inferior by using a "vCont" packet. The thread
4122 to be resumed is PTID; STEP and SIGGNAL indicate whether the
4123 resumed thread should be single-stepped and/or signalled. If PTID
4124 equals minus_one_ptid, then all threads are resumed; the thread to
4125 be stepped and/or signalled is given in the global INFERIOR_PTID.
4126 This function returns non-zero iff it resumes the inferior.
4128 This function issues a strict subset of all possible vCont commands at the
4132 remote_vcont_resume (ptid_t ptid
, int step
, enum target_signal siggnal
)
4134 struct remote_state
*rs
= get_remote_state ();
4138 if (remote_protocol_packets
[PACKET_vCont
].support
== PACKET_SUPPORT_UNKNOWN
)
4139 remote_vcont_probe (rs
);
4141 if (remote_protocol_packets
[PACKET_vCont
].support
== PACKET_DISABLE
)
4145 endp
= rs
->buf
+ get_remote_packet_size ();
4147 /* If we could generate a wider range of packets, we'd have to worry
4148 about overflowing BUF. Should there be a generic
4149 "multi-part-packet" packet? */
4151 p
+= xsnprintf (p
, endp
- p
, "vCont");
4153 if (ptid_equal (ptid
, magic_null_ptid
))
4155 /* MAGIC_NULL_PTID means that we don't have any active threads,
4156 so we don't have any TID numbers the inferior will
4157 understand. Make sure to only send forms that do not specify
4159 p
= append_resumption (p
, endp
, minus_one_ptid
, step
, siggnal
);
4161 else if (ptid_equal (ptid
, minus_one_ptid
) || ptid_is_pid (ptid
))
4163 /* Resume all threads (of all processes, or of a single
4164 process), with preference for INFERIOR_PTID. This assumes
4165 inferior_ptid belongs to the set of all threads we are about
4167 if (step
|| siggnal
!= TARGET_SIGNAL_0
)
4169 /* Step inferior_ptid, with or without signal. */
4170 p
= append_resumption (p
, endp
, inferior_ptid
, step
, siggnal
);
4173 /* And continue others without a signal. */
4174 p
= append_resumption (p
, endp
, ptid
, /*step=*/ 0, TARGET_SIGNAL_0
);
4178 /* Scheduler locking; resume only PTID. */
4179 p
= append_resumption (p
, endp
, ptid
, step
, siggnal
);
4182 gdb_assert (strlen (rs
->buf
) < get_remote_packet_size ());
4187 /* In non-stop, the stub replies to vCont with "OK". The stop
4188 reply will be reported asynchronously by means of a `%Stop'
4190 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4191 if (strcmp (rs
->buf
, "OK") != 0)
4192 error (_("Unexpected vCont reply in non-stop mode: %s"), rs
->buf
);
4198 /* Tell the remote machine to resume. */
4200 static enum target_signal last_sent_signal
= TARGET_SIGNAL_0
;
4202 static int last_sent_step
;
4205 remote_resume (struct target_ops
*ops
,
4206 ptid_t ptid
, int step
, enum target_signal siggnal
)
4208 struct remote_state
*rs
= get_remote_state ();
4211 last_sent_signal
= siggnal
;
4212 last_sent_step
= step
;
4214 /* Update the inferior on signals to silently pass, if they've changed. */
4215 remote_pass_signals ();
4217 /* The vCont packet doesn't need to specify threads via Hc. */
4218 /* No reverse support (yet) for vCont. */
4219 if (execution_direction
!= EXEC_REVERSE
)
4220 if (remote_vcont_resume (ptid
, step
, siggnal
))
4223 /* All other supported resume packets do use Hc, so set the continue
4225 if (ptid_equal (ptid
, minus_one_ptid
))
4226 set_continue_thread (any_thread_ptid
);
4228 set_continue_thread (ptid
);
4231 if (execution_direction
== EXEC_REVERSE
)
4233 /* We don't pass signals to the target in reverse exec mode. */
4234 if (info_verbose
&& siggnal
!= TARGET_SIGNAL_0
)
4235 warning (" - Can't pass signal %d to target in reverse: ignored.\n",
4239 && remote_protocol_packets
[PACKET_bs
].support
== PACKET_DISABLE
)
4240 error (_("Remote reverse-step not supported."));
4242 && remote_protocol_packets
[PACKET_bc
].support
== PACKET_DISABLE
)
4243 error (_("Remote reverse-continue not supported."));
4245 strcpy (buf
, step
? "bs" : "bc");
4247 else if (siggnal
!= TARGET_SIGNAL_0
)
4249 buf
[0] = step
? 'S' : 'C';
4250 buf
[1] = tohex (((int) siggnal
>> 4) & 0xf);
4251 buf
[2] = tohex (((int) siggnal
) & 0xf);
4255 strcpy (buf
, step
? "s" : "c");
4260 /* We are about to start executing the inferior, let's register it
4261 with the event loop. NOTE: this is the one place where all the
4262 execution commands end up. We could alternatively do this in each
4263 of the execution commands in infcmd.c. */
4264 /* FIXME: ezannoni 1999-09-28: We may need to move this out of here
4265 into infcmd.c in order to allow inferior function calls to work
4266 NOT asynchronously. */
4267 if (target_can_async_p ())
4268 target_async (inferior_event_handler
, 0);
4270 /* We've just told the target to resume. The remote server will
4271 wait for the inferior to stop, and then send a stop reply. In
4272 the mean time, we can't start another command/query ourselves
4273 because the stub wouldn't be ready to process it. This applies
4274 only to the base all-stop protocol, however. In non-stop (which
4275 only supports vCont), the stub replies with an "OK", and is
4276 immediate able to process further serial input. */
4278 rs
->waiting_for_stop_reply
= 1;
4282 /* Set up the signal handler for SIGINT, while the target is
4283 executing, ovewriting the 'regular' SIGINT signal handler. */
4285 initialize_sigint_signal_handler (void)
4287 signal (SIGINT
, handle_remote_sigint
);
4290 /* Signal handler for SIGINT, while the target is executing. */
4292 handle_remote_sigint (int sig
)
4294 signal (sig
, handle_remote_sigint_twice
);
4295 mark_async_signal_handler_wrapper (sigint_remote_token
);
4298 /* Signal handler for SIGINT, installed after SIGINT has already been
4299 sent once. It will take effect the second time that the user sends
4302 handle_remote_sigint_twice (int sig
)
4304 signal (sig
, handle_remote_sigint
);
4305 mark_async_signal_handler_wrapper (sigint_remote_twice_token
);
4308 /* Perform the real interruption of the target execution, in response
4311 async_remote_interrupt (gdb_client_data arg
)
4314 fprintf_unfiltered (gdb_stdlog
, "remote_interrupt called\n");
4316 target_stop (inferior_ptid
);
4319 /* Perform interrupt, if the first attempt did not succeed. Just give
4320 up on the target alltogether. */
4322 async_remote_interrupt_twice (gdb_client_data arg
)
4325 fprintf_unfiltered (gdb_stdlog
, "remote_interrupt_twice called\n");
4330 /* Reinstall the usual SIGINT handlers, after the target has
4333 cleanup_sigint_signal_handler (void *dummy
)
4335 signal (SIGINT
, handle_sigint
);
4338 /* Send ^C to target to halt it. Target will respond, and send us a
4340 static void (*ofunc
) (int);
4342 /* The command line interface's stop routine. This function is installed
4343 as a signal handler for SIGINT. The first time a user requests a
4344 stop, we call remote_stop to send a break or ^C. If there is no
4345 response from the target (it didn't stop when the user requested it),
4346 we ask the user if he'd like to detach from the target. */
4348 remote_interrupt (int signo
)
4350 /* If this doesn't work, try more severe steps. */
4351 signal (signo
, remote_interrupt_twice
);
4353 gdb_call_async_signal_handler (sigint_remote_token
, 1);
4356 /* The user typed ^C twice. */
4359 remote_interrupt_twice (int signo
)
4361 signal (signo
, ofunc
);
4362 gdb_call_async_signal_handler (sigint_remote_twice_token
, 1);
4363 signal (signo
, remote_interrupt
);
4366 /* Non-stop version of target_stop. Uses `vCont;t' to stop a remote
4367 thread, all threads of a remote process, or all threads of all
4371 remote_stop_ns (ptid_t ptid
)
4373 struct remote_state
*rs
= get_remote_state ();
4375 char *endp
= rs
->buf
+ get_remote_packet_size ();
4377 if (remote_protocol_packets
[PACKET_vCont
].support
== PACKET_SUPPORT_UNKNOWN
)
4378 remote_vcont_probe (rs
);
4380 if (!rs
->support_vCont_t
)
4381 error (_("Remote server does not support stopping threads"));
4383 if (ptid_equal (ptid
, minus_one_ptid
)
4384 || (!remote_multi_process_p (rs
) && ptid_is_pid (ptid
)))
4385 p
+= xsnprintf (p
, endp
- p
, "vCont;t");
4390 p
+= xsnprintf (p
, endp
- p
, "vCont;t:");
4392 if (ptid_is_pid (ptid
))
4393 /* All (-1) threads of process. */
4394 nptid
= ptid_build (ptid_get_pid (ptid
), 0, -1);
4397 /* Small optimization: if we already have a stop reply for
4398 this thread, no use in telling the stub we want this
4400 if (peek_stop_reply (ptid
))
4406 p
= write_ptid (p
, endp
, nptid
);
4409 /* In non-stop, we get an immediate OK reply. The stop reply will
4410 come in asynchronously by notification. */
4412 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4413 if (strcmp (rs
->buf
, "OK") != 0)
4414 error (_("Stopping %s failed: %s"), target_pid_to_str (ptid
), rs
->buf
);
4417 /* All-stop version of target_stop. Sends a break or a ^C to stop the
4418 remote target. It is undefined which thread of which process
4419 reports the stop. */
4422 remote_stop_as (ptid_t ptid
)
4424 struct remote_state
*rs
= get_remote_state ();
4426 rs
->ctrlc_pending_p
= 1;
4428 /* If the inferior is stopped already, but the core didn't know
4429 about it yet, just ignore the request. The cached wait status
4430 will be collected in remote_wait. */
4431 if (rs
->cached_wait_status
)
4434 /* Send interrupt_sequence to remote target. */
4435 send_interrupt_sequence ();
4438 /* This is the generic stop called via the target vector. When a target
4439 interrupt is requested, either by the command line or the GUI, we
4440 will eventually end up here. */
4443 remote_stop (ptid_t ptid
)
4446 fprintf_unfiltered (gdb_stdlog
, "remote_stop called\n");
4449 remote_stop_ns (ptid
);
4451 remote_stop_as (ptid
);
4454 /* Ask the user what to do when an interrupt is received. */
4457 interrupt_query (void)
4459 target_terminal_ours ();
4461 if (target_can_async_p ())
4463 signal (SIGINT
, handle_sigint
);
4464 deprecated_throw_reason (RETURN_QUIT
);
4468 if (query (_("Interrupted while waiting for the program.\n\
4469 Give up (and stop debugging it)? ")))
4472 deprecated_throw_reason (RETURN_QUIT
);
4476 target_terminal_inferior ();
4479 /* Enable/disable target terminal ownership. Most targets can use
4480 terminal groups to control terminal ownership. Remote targets are
4481 different in that explicit transfer of ownership to/from GDB/target
4485 remote_terminal_inferior (void)
4487 if (!target_async_permitted
)
4488 /* Nothing to do. */
4491 /* FIXME: cagney/1999-09-27: Make calls to target_terminal_*()
4492 idempotent. The event-loop GDB talking to an asynchronous target
4493 with a synchronous command calls this function from both
4494 event-top.c and infrun.c/infcmd.c. Once GDB stops trying to
4495 transfer the terminal to the target when it shouldn't this guard
4497 if (!remote_async_terminal_ours_p
)
4499 delete_file_handler (input_fd
);
4500 remote_async_terminal_ours_p
= 0;
4501 initialize_sigint_signal_handler ();
4502 /* NOTE: At this point we could also register our selves as the
4503 recipient of all input. Any characters typed could then be
4504 passed on down to the target. */
4508 remote_terminal_ours (void)
4510 if (!target_async_permitted
)
4511 /* Nothing to do. */
4514 /* See FIXME in remote_terminal_inferior. */
4515 if (remote_async_terminal_ours_p
)
4517 cleanup_sigint_signal_handler (NULL
);
4518 add_file_handler (input_fd
, stdin_event_handler
, 0);
4519 remote_async_terminal_ours_p
= 1;
4523 remote_console_output (char *msg
)
4527 for (p
= msg
; p
[0] && p
[1]; p
+= 2)
4530 char c
= fromhex (p
[0]) * 16 + fromhex (p
[1]);
4533 fputs_unfiltered (tb
, gdb_stdtarg
);
4535 gdb_flush (gdb_stdtarg
);
4538 typedef struct cached_reg
4541 gdb_byte data
[MAX_REGISTER_SIZE
];
4544 DEF_VEC_O(cached_reg_t
);
4548 struct stop_reply
*next
;
4552 struct target_waitstatus ws
;
4554 VEC(cached_reg_t
) *regcache
;
4556 int stopped_by_watchpoint_p
;
4557 CORE_ADDR watch_data_address
;
4565 /* The list of already fetched and acknowledged stop events. */
4566 static struct stop_reply
*stop_reply_queue
;
4568 static struct stop_reply
*
4569 stop_reply_xmalloc (void)
4571 struct stop_reply
*r
= XMALLOC (struct stop_reply
);
4577 stop_reply_xfree (struct stop_reply
*r
)
4581 VEC_free (cached_reg_t
, r
->regcache
);
4586 /* Discard all pending stop replies of inferior PID. If PID is -1,
4587 discard everything. */
4590 discard_pending_stop_replies (int pid
)
4592 struct stop_reply
*prev
= NULL
, *reply
, *next
;
4594 /* Discard the in-flight notification. */
4595 if (pending_stop_reply
!= NULL
4597 || ptid_get_pid (pending_stop_reply
->ptid
) == pid
))
4599 stop_reply_xfree (pending_stop_reply
);
4600 pending_stop_reply
= NULL
;
4603 /* Discard the stop replies we have already pulled with
4605 for (reply
= stop_reply_queue
; reply
; reply
= next
)
4609 || ptid_get_pid (reply
->ptid
) == pid
)
4611 if (reply
== stop_reply_queue
)
4612 stop_reply_queue
= reply
->next
;
4614 prev
->next
= reply
->next
;
4616 stop_reply_xfree (reply
);
4623 /* Cleanup wrapper. */
4626 do_stop_reply_xfree (void *arg
)
4628 struct stop_reply
*r
= arg
;
4629 stop_reply_xfree (r
);
4632 /* Look for a queued stop reply belonging to PTID. If one is found,
4633 remove it from the queue, and return it. Returns NULL if none is
4634 found. If there are still queued events left to process, tell the
4635 event loop to get back to target_wait soon. */
4637 static struct stop_reply
*
4638 queued_stop_reply (ptid_t ptid
)
4640 struct stop_reply
*it
, *prev
;
4641 struct stop_reply head
;
4643 head
.next
= stop_reply_queue
;
4648 if (!ptid_equal (ptid
, minus_one_ptid
))
4649 for (; it
; prev
= it
, it
= it
->next
)
4650 if (ptid_equal (ptid
, it
->ptid
))
4655 prev
->next
= it
->next
;
4659 stop_reply_queue
= head
.next
;
4661 if (stop_reply_queue
)
4662 /* There's still at least an event left. */
4663 mark_async_event_handler (remote_async_inferior_event_token
);
4668 /* Push a fully parsed stop reply in the stop reply queue. Since we
4669 know that we now have at least one queued event left to pass to the
4670 core side, tell the event loop to get back to target_wait soon. */
4673 push_stop_reply (struct stop_reply
*new_event
)
4675 struct stop_reply
*event
;
4677 if (stop_reply_queue
)
4679 for (event
= stop_reply_queue
;
4680 event
&& event
->next
;
4681 event
= event
->next
)
4684 event
->next
= new_event
;
4687 stop_reply_queue
= new_event
;
4689 mark_async_event_handler (remote_async_inferior_event_token
);
4692 /* Returns true if we have a stop reply for PTID. */
4695 peek_stop_reply (ptid_t ptid
)
4697 struct stop_reply
*it
;
4699 for (it
= stop_reply_queue
; it
; it
= it
->next
)
4700 if (ptid_equal (ptid
, it
->ptid
))
4702 if (it
->ws
.kind
== TARGET_WAITKIND_STOPPED
)
4709 /* Parse the stop reply in BUF. Either the function succeeds, and the
4710 result is stored in EVENT, or throws an error. */
4713 remote_parse_stop_reply (char *buf
, struct stop_reply
*event
)
4715 struct remote_arch_state
*rsa
= get_remote_arch_state ();
4719 event
->ptid
= null_ptid
;
4720 event
->ws
.kind
= TARGET_WAITKIND_IGNORE
;
4721 event
->ws
.value
.integer
= 0;
4722 event
->solibs_changed
= 0;
4723 event
->replay_event
= 0;
4724 event
->stopped_by_watchpoint_p
= 0;
4725 event
->regcache
= NULL
;
4730 case 'T': /* Status with PC, SP, FP, ... */
4731 /* Expedited reply, containing Signal, {regno, reg} repeat. */
4732 /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where
4734 n... = register number
4735 r... = register contents
4738 p
= &buf
[3]; /* after Txx */
4746 /* If the packet contains a register number, save it in
4747 pnum and set p1 to point to the character following it.
4748 Otherwise p1 points to p. */
4750 /* If this packet is an awatch packet, don't parse the 'a'
4751 as a register number. */
4753 if (strncmp (p
, "awatch", strlen("awatch")) != 0
4754 && strncmp (p
, "core", strlen ("core") != 0))
4756 /* Read the ``P'' register number. */
4757 pnum
= strtol (p
, &p_temp
, 16);
4763 if (p1
== p
) /* No register number present here. */
4765 p1
= strchr (p
, ':');
4767 error (_("Malformed packet(a) (missing colon): %s\n\
4770 if (strncmp (p
, "thread", p1
- p
) == 0)
4771 event
->ptid
= read_ptid (++p1
, &p
);
4772 else if ((strncmp (p
, "watch", p1
- p
) == 0)
4773 || (strncmp (p
, "rwatch", p1
- p
) == 0)
4774 || (strncmp (p
, "awatch", p1
- p
) == 0))
4776 event
->stopped_by_watchpoint_p
= 1;
4777 p
= unpack_varlen_hex (++p1
, &addr
);
4778 event
->watch_data_address
= (CORE_ADDR
) addr
;
4780 else if (strncmp (p
, "library", p1
- p
) == 0)
4784 while (*p_temp
&& *p_temp
!= ';')
4787 event
->solibs_changed
= 1;
4790 else if (strncmp (p
, "replaylog", p1
- p
) == 0)
4792 /* NO_HISTORY event.
4793 p1 will indicate "begin" or "end", but
4794 it makes no difference for now, so ignore it. */
4795 event
->replay_event
= 1;
4796 p_temp
= strchr (p1
+ 1, ';');
4800 else if (strncmp (p
, "core", p1
- p
) == 0)
4803 p
= unpack_varlen_hex (++p1
, &c
);
4808 /* Silently skip unknown optional info. */
4809 p_temp
= strchr (p1
+ 1, ';');
4816 struct packet_reg
*reg
= packet_reg_from_pnum (rsa
, pnum
);
4817 cached_reg_t cached_reg
;
4822 error (_("Malformed packet(b) (missing colon): %s\n\
4828 error (_("Remote sent bad register number %s: %s\n\
4830 phex_nz (pnum
, 0), p
, buf
);
4832 cached_reg
.num
= reg
->regnum
;
4834 fieldsize
= hex2bin (p
, cached_reg
.data
,
4835 register_size (target_gdbarch
,
4838 if (fieldsize
< register_size (target_gdbarch
,
4840 warning (_("Remote reply is too short: %s"), buf
);
4842 VEC_safe_push (cached_reg_t
, event
->regcache
, &cached_reg
);
4846 error (_("Remote register badly formatted: %s\nhere: %s"),
4851 case 'S': /* Old style status, just signal only. */
4852 if (event
->solibs_changed
)
4853 event
->ws
.kind
= TARGET_WAITKIND_LOADED
;
4854 else if (event
->replay_event
)
4855 event
->ws
.kind
= TARGET_WAITKIND_NO_HISTORY
;
4858 event
->ws
.kind
= TARGET_WAITKIND_STOPPED
;
4859 event
->ws
.value
.sig
= (enum target_signal
)
4860 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
4863 case 'W': /* Target exited. */
4870 /* GDB used to accept only 2 hex chars here. Stubs should
4871 only send more if they detect GDB supports multi-process
4873 p
= unpack_varlen_hex (&buf
[1], &value
);
4877 /* The remote process exited. */
4878 event
->ws
.kind
= TARGET_WAITKIND_EXITED
;
4879 event
->ws
.value
.integer
= value
;
4883 /* The remote process exited with a signal. */
4884 event
->ws
.kind
= TARGET_WAITKIND_SIGNALLED
;
4885 event
->ws
.value
.sig
= (enum target_signal
) value
;
4888 /* If no process is specified, assume inferior_ptid. */
4889 pid
= ptid_get_pid (inferior_ptid
);
4898 else if (strncmp (p
,
4899 "process:", sizeof ("process:") - 1) == 0)
4902 p
+= sizeof ("process:") - 1;
4903 unpack_varlen_hex (p
, &upid
);
4907 error (_("unknown stop reply packet: %s"), buf
);
4910 error (_("unknown stop reply packet: %s"), buf
);
4911 event
->ptid
= pid_to_ptid (pid
);
4916 if (non_stop
&& ptid_equal (event
->ptid
, null_ptid
))
4917 error (_("No process or thread specified in stop reply: %s"), buf
);
4920 /* When the stub wants to tell GDB about a new stop reply, it sends a
4921 stop notification (%Stop). Those can come it at any time, hence,
4922 we have to make sure that any pending putpkt/getpkt sequence we're
4923 making is finished, before querying the stub for more events with
4924 vStopped. E.g., if we started a vStopped sequence immediatelly
4925 upon receiving the %Stop notification, something like this could
4933 1.6) <-- (registers reply to step #1.3)
4935 Obviously, the reply in step #1.6 would be unexpected to a vStopped
4938 To solve this, whenever we parse a %Stop notification sucessfully,
4939 we mark the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN, and carry on
4940 doing whatever we were doing:
4946 <GDB marks the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN>
4947 2.5) <-- (registers reply to step #2.3)
4949 Eventualy after step #2.5, we return to the event loop, which
4950 notices there's an event on the
4951 REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN event and calls the
4952 associated callback --- the function below. At this point, we're
4953 always safe to start a vStopped sequence. :
4956 2.7) <-- T05 thread:2
4962 remote_get_pending_stop_replies (void)
4964 struct remote_state
*rs
= get_remote_state ();
4966 if (pending_stop_reply
)
4969 putpkt ("vStopped");
4971 /* Now we can rely on it. */
4972 push_stop_reply (pending_stop_reply
);
4973 pending_stop_reply
= NULL
;
4977 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4978 if (strcmp (rs
->buf
, "OK") == 0)
4982 struct cleanup
*old_chain
;
4983 struct stop_reply
*stop_reply
= stop_reply_xmalloc ();
4985 old_chain
= make_cleanup (do_stop_reply_xfree
, stop_reply
);
4986 remote_parse_stop_reply (rs
->buf
, stop_reply
);
4989 putpkt ("vStopped");
4991 if (stop_reply
->ws
.kind
!= TARGET_WAITKIND_IGNORE
)
4993 /* Now we can rely on it. */
4994 discard_cleanups (old_chain
);
4995 push_stop_reply (stop_reply
);
4998 /* We got an unknown stop reply. */
4999 do_cleanups (old_chain
);
5006 /* Called when it is decided that STOP_REPLY holds the info of the
5007 event that is to be returned to the core. This function always
5008 destroys STOP_REPLY. */
5011 process_stop_reply (struct stop_reply
*stop_reply
,
5012 struct target_waitstatus
*status
)
5015 struct thread_info
*info
;
5017 *status
= stop_reply
->ws
;
5018 ptid
= stop_reply
->ptid
;
5020 /* If no thread/process was reported by the stub, assume the current
5022 if (ptid_equal (ptid
, null_ptid
))
5023 ptid
= inferior_ptid
;
5025 if (status
->kind
!= TARGET_WAITKIND_EXITED
5026 && status
->kind
!= TARGET_WAITKIND_SIGNALLED
)
5028 /* Expedited registers. */
5029 if (stop_reply
->regcache
)
5031 struct regcache
*regcache
5032 = get_thread_arch_regcache (ptid
, target_gdbarch
);
5037 VEC_iterate(cached_reg_t
, stop_reply
->regcache
, ix
, reg
);
5039 regcache_raw_supply (regcache
, reg
->num
, reg
->data
);
5040 VEC_free (cached_reg_t
, stop_reply
->regcache
);
5043 remote_stopped_by_watchpoint_p
= stop_reply
->stopped_by_watchpoint_p
;
5044 remote_watch_data_address
= stop_reply
->watch_data_address
;
5046 remote_notice_new_inferior (ptid
, 0);
5047 demand_private_info (ptid
)->core
= stop_reply
->core
;
5050 stop_reply_xfree (stop_reply
);
5054 /* The non-stop mode version of target_wait. */
5057 remote_wait_ns (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
5059 struct remote_state
*rs
= get_remote_state ();
5060 struct stop_reply
*stop_reply
;
5063 /* If in non-stop mode, get out of getpkt even if a
5064 notification is received. */
5066 ret
= getpkt_or_notif_sane (&rs
->buf
, &rs
->buf_size
,
5073 case 'E': /* Error of some sort. */
5074 /* We're out of sync with the target now. Did it continue
5075 or not? We can't tell which thread it was in non-stop,
5076 so just ignore this. */
5077 warning (_("Remote failure reply: %s"), rs
->buf
);
5079 case 'O': /* Console output. */
5080 remote_console_output (rs
->buf
+ 1);
5083 warning (_("Invalid remote reply: %s"), rs
->buf
);
5087 /* Acknowledge a pending stop reply that may have arrived in the
5089 if (pending_stop_reply
!= NULL
)
5090 remote_get_pending_stop_replies ();
5092 /* If indeed we noticed a stop reply, we're done. */
5093 stop_reply
= queued_stop_reply (ptid
);
5094 if (stop_reply
!= NULL
)
5095 return process_stop_reply (stop_reply
, status
);
5097 /* Still no event. If we're just polling for an event, then
5098 return to the event loop. */
5099 if (options
& TARGET_WNOHANG
)
5101 status
->kind
= TARGET_WAITKIND_IGNORE
;
5102 return minus_one_ptid
;
5105 /* Otherwise do a blocking wait. */
5106 ret
= getpkt_or_notif_sane (&rs
->buf
, &rs
->buf_size
,
5111 /* Wait until the remote machine stops, then return, storing status in
5112 STATUS just as `wait' would. */
5115 remote_wait_as (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
5117 struct remote_state
*rs
= get_remote_state ();
5118 ptid_t event_ptid
= null_ptid
;
5120 struct stop_reply
*stop_reply
;
5124 status
->kind
= TARGET_WAITKIND_IGNORE
;
5125 status
->value
.integer
= 0;
5127 stop_reply
= queued_stop_reply (ptid
);
5128 if (stop_reply
!= NULL
)
5129 return process_stop_reply (stop_reply
, status
);
5131 if (rs
->cached_wait_status
)
5132 /* Use the cached wait status, but only once. */
5133 rs
->cached_wait_status
= 0;
5138 if (!target_is_async_p ())
5140 ofunc
= signal (SIGINT
, remote_interrupt
);
5141 /* If the user hit C-c before this packet, or between packets,
5142 pretend that it was hit right here. */
5146 remote_interrupt (SIGINT
);
5150 /* FIXME: cagney/1999-09-27: If we're in async mode we should
5151 _never_ wait for ever -> test on target_is_async_p().
5152 However, before we do that we need to ensure that the caller
5153 knows how to take the target into/out of async mode. */
5154 ret
= getpkt_sane (&rs
->buf
, &rs
->buf_size
, wait_forever_enabled_p
);
5155 if (!target_is_async_p ())
5156 signal (SIGINT
, ofunc
);
5161 remote_stopped_by_watchpoint_p
= 0;
5163 /* We got something. */
5164 rs
->waiting_for_stop_reply
= 0;
5166 /* Assume that the target has acknowledged Ctrl-C unless we receive
5167 an 'F' or 'O' packet. */
5168 if (buf
[0] != 'F' && buf
[0] != 'O')
5169 rs
->ctrlc_pending_p
= 0;
5173 case 'E': /* Error of some sort. */
5174 /* We're out of sync with the target now. Did it continue or
5175 not? Not is more likely, so report a stop. */
5176 warning (_("Remote failure reply: %s"), buf
);
5177 status
->kind
= TARGET_WAITKIND_STOPPED
;
5178 status
->value
.sig
= TARGET_SIGNAL_0
;
5180 case 'F': /* File-I/O request. */
5181 remote_fileio_request (buf
, rs
->ctrlc_pending_p
);
5182 rs
->ctrlc_pending_p
= 0;
5184 case 'T': case 'S': case 'X': case 'W':
5186 struct stop_reply
*stop_reply
;
5187 struct cleanup
*old_chain
;
5189 stop_reply
= stop_reply_xmalloc ();
5190 old_chain
= make_cleanup (do_stop_reply_xfree
, stop_reply
);
5191 remote_parse_stop_reply (buf
, stop_reply
);
5192 discard_cleanups (old_chain
);
5193 event_ptid
= process_stop_reply (stop_reply
, status
);
5196 case 'O': /* Console output. */
5197 remote_console_output (buf
+ 1);
5199 /* The target didn't really stop; keep waiting. */
5200 rs
->waiting_for_stop_reply
= 1;
5204 if (last_sent_signal
!= TARGET_SIGNAL_0
)
5206 /* Zero length reply means that we tried 'S' or 'C' and the
5207 remote system doesn't support it. */
5208 target_terminal_ours_for_output ();
5210 ("Can't send signals to this remote system. %s not sent.\n",
5211 target_signal_to_name (last_sent_signal
));
5212 last_sent_signal
= TARGET_SIGNAL_0
;
5213 target_terminal_inferior ();
5215 strcpy ((char *) buf
, last_sent_step
? "s" : "c");
5216 putpkt ((char *) buf
);
5218 /* We just told the target to resume, so a stop reply is in
5220 rs
->waiting_for_stop_reply
= 1;
5223 /* else fallthrough */
5225 warning (_("Invalid remote reply: %s"), buf
);
5227 rs
->waiting_for_stop_reply
= 1;
5231 if (status
->kind
== TARGET_WAITKIND_IGNORE
)
5233 /* Nothing interesting happened. If we're doing a non-blocking
5234 poll, we're done. Otherwise, go back to waiting. */
5235 if (options
& TARGET_WNOHANG
)
5236 return minus_one_ptid
;
5240 else if (status
->kind
!= TARGET_WAITKIND_EXITED
5241 && status
->kind
!= TARGET_WAITKIND_SIGNALLED
)
5243 if (!ptid_equal (event_ptid
, null_ptid
))
5244 record_currthread (event_ptid
);
5246 event_ptid
= inferior_ptid
;
5249 /* A process exit. Invalidate our notion of current thread. */
5250 record_currthread (minus_one_ptid
);
5255 /* Wait until the remote machine stops, then return, storing status in
5256 STATUS just as `wait' would. */
5259 remote_wait (struct target_ops
*ops
,
5260 ptid_t ptid
, struct target_waitstatus
*status
, int options
)
5265 event_ptid
= remote_wait_ns (ptid
, status
, options
);
5267 event_ptid
= remote_wait_as (ptid
, status
, options
);
5269 if (target_can_async_p ())
5271 /* If there are are events left in the queue tell the event loop
5273 if (stop_reply_queue
)
5274 mark_async_event_handler (remote_async_inferior_event_token
);
5280 /* Fetch a single register using a 'p' packet. */
5283 fetch_register_using_p (struct regcache
*regcache
, struct packet_reg
*reg
)
5285 struct remote_state
*rs
= get_remote_state ();
5287 char regp
[MAX_REGISTER_SIZE
];
5290 if (remote_protocol_packets
[PACKET_p
].support
== PACKET_DISABLE
)
5293 if (reg
->pnum
== -1)
5298 p
+= hexnumstr (p
, reg
->pnum
);
5301 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5305 switch (packet_ok (buf
, &remote_protocol_packets
[PACKET_p
]))
5309 case PACKET_UNKNOWN
:
5312 error (_("Could not fetch register \"%s\"; remote failure reply '%s'"),
5313 gdbarch_register_name (get_regcache_arch (regcache
),
5318 /* If this register is unfetchable, tell the regcache. */
5321 regcache_raw_supply (regcache
, reg
->regnum
, NULL
);
5325 /* Otherwise, parse and supply the value. */
5331 error (_("fetch_register_using_p: early buf termination"));
5333 regp
[i
++] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
5336 regcache_raw_supply (regcache
, reg
->regnum
, regp
);
5340 /* Fetch the registers included in the target's 'g' packet. */
5343 send_g_packet (void)
5345 struct remote_state
*rs
= get_remote_state ();
5348 sprintf (rs
->buf
, "g");
5349 remote_send (&rs
->buf
, &rs
->buf_size
);
5351 /* We can get out of synch in various cases. If the first character
5352 in the buffer is not a hex character, assume that has happened
5353 and try to fetch another packet to read. */
5354 while ((rs
->buf
[0] < '0' || rs
->buf
[0] > '9')
5355 && (rs
->buf
[0] < 'A' || rs
->buf
[0] > 'F')
5356 && (rs
->buf
[0] < 'a' || rs
->buf
[0] > 'f')
5357 && rs
->buf
[0] != 'x') /* New: unavailable register value. */
5360 fprintf_unfiltered (gdb_stdlog
,
5361 "Bad register packet; fetching a new packet\n");
5362 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5365 buf_len
= strlen (rs
->buf
);
5367 /* Sanity check the received packet. */
5368 if (buf_len
% 2 != 0)
5369 error (_("Remote 'g' packet reply is of odd length: %s"), rs
->buf
);
5375 process_g_packet (struct regcache
*regcache
)
5377 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
5378 struct remote_state
*rs
= get_remote_state ();
5379 struct remote_arch_state
*rsa
= get_remote_arch_state ();
5384 buf_len
= strlen (rs
->buf
);
5386 /* Further sanity checks, with knowledge of the architecture. */
5387 if (buf_len
> 2 * rsa
->sizeof_g_packet
)
5388 error (_("Remote 'g' packet reply is too long: %s"), rs
->buf
);
5390 /* Save the size of the packet sent to us by the target. It is used
5391 as a heuristic when determining the max size of packets that the
5392 target can safely receive. */
5393 if (rsa
->actual_register_packet_size
== 0)
5394 rsa
->actual_register_packet_size
= buf_len
;
5396 /* If this is smaller than we guessed the 'g' packet would be,
5397 update our records. A 'g' reply that doesn't include a register's
5398 value implies either that the register is not available, or that
5399 the 'p' packet must be used. */
5400 if (buf_len
< 2 * rsa
->sizeof_g_packet
)
5402 rsa
->sizeof_g_packet
= buf_len
/ 2;
5404 for (i
= 0; i
< gdbarch_num_regs (gdbarch
); i
++)
5406 if (rsa
->regs
[i
].pnum
== -1)
5409 if (rsa
->regs
[i
].offset
>= rsa
->sizeof_g_packet
)
5410 rsa
->regs
[i
].in_g_packet
= 0;
5412 rsa
->regs
[i
].in_g_packet
= 1;
5416 regs
= alloca (rsa
->sizeof_g_packet
);
5418 /* Unimplemented registers read as all bits zero. */
5419 memset (regs
, 0, rsa
->sizeof_g_packet
);
5421 /* Reply describes registers byte by byte, each byte encoded as two
5422 hex characters. Suck them all up, then supply them to the
5423 register cacheing/storage mechanism. */
5426 for (i
= 0; i
< rsa
->sizeof_g_packet
; i
++)
5428 if (p
[0] == 0 || p
[1] == 0)
5429 /* This shouldn't happen - we adjusted sizeof_g_packet above. */
5430 internal_error (__FILE__
, __LINE__
,
5431 "unexpected end of 'g' packet reply");
5433 if (p
[0] == 'x' && p
[1] == 'x')
5434 regs
[i
] = 0; /* 'x' */
5436 regs
[i
] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
5442 for (i
= 0; i
< gdbarch_num_regs (gdbarch
); i
++)
5444 struct packet_reg
*r
= &rsa
->regs
[i
];
5447 if (r
->offset
* 2 >= strlen (rs
->buf
))
5448 /* This shouldn't happen - we adjusted in_g_packet above. */
5449 internal_error (__FILE__
, __LINE__
,
5450 "unexpected end of 'g' packet reply");
5451 else if (rs
->buf
[r
->offset
* 2] == 'x')
5453 gdb_assert (r
->offset
* 2 < strlen (rs
->buf
));
5454 /* The register isn't available, mark it as such (at
5455 the same time setting the value to zero). */
5456 regcache_raw_supply (regcache
, r
->regnum
, NULL
);
5459 regcache_raw_supply (regcache
, r
->regnum
,
5467 fetch_registers_using_g (struct regcache
*regcache
)
5470 process_g_packet (regcache
);
5474 remote_fetch_registers (struct target_ops
*ops
,
5475 struct regcache
*regcache
, int regnum
)
5477 struct remote_arch_state
*rsa
= get_remote_arch_state ();
5480 set_general_thread (inferior_ptid
);
5484 struct packet_reg
*reg
= packet_reg_from_regnum (rsa
, regnum
);
5485 gdb_assert (reg
!= NULL
);
5487 /* If this register might be in the 'g' packet, try that first -
5488 we are likely to read more than one register. If this is the
5489 first 'g' packet, we might be overly optimistic about its
5490 contents, so fall back to 'p'. */
5491 if (reg
->in_g_packet
)
5493 fetch_registers_using_g (regcache
);
5494 if (reg
->in_g_packet
)
5498 if (fetch_register_using_p (regcache
, reg
))
5501 /* This register is not available. */
5502 regcache_raw_supply (regcache
, reg
->regnum
, NULL
);
5507 fetch_registers_using_g (regcache
);
5509 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
5510 if (!rsa
->regs
[i
].in_g_packet
)
5511 if (!fetch_register_using_p (regcache
, &rsa
->regs
[i
]))
5513 /* This register is not available. */
5514 regcache_raw_supply (regcache
, i
, NULL
);
5518 /* Prepare to store registers. Since we may send them all (using a
5519 'G' request), we have to read out the ones we don't want to change
5523 remote_prepare_to_store (struct regcache
*regcache
)
5525 struct remote_arch_state
*rsa
= get_remote_arch_state ();
5527 gdb_byte buf
[MAX_REGISTER_SIZE
];
5529 /* Make sure the entire registers array is valid. */
5530 switch (remote_protocol_packets
[PACKET_P
].support
)
5532 case PACKET_DISABLE
:
5533 case PACKET_SUPPORT_UNKNOWN
:
5534 /* Make sure all the necessary registers are cached. */
5535 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
5536 if (rsa
->regs
[i
].in_g_packet
)
5537 regcache_raw_read (regcache
, rsa
->regs
[i
].regnum
, buf
);
5544 /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF
5545 packet was not recognized. */
5548 store_register_using_P (const struct regcache
*regcache
,
5549 struct packet_reg
*reg
)
5551 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
5552 struct remote_state
*rs
= get_remote_state ();
5553 /* Try storing a single register. */
5554 char *buf
= rs
->buf
;
5555 gdb_byte regp
[MAX_REGISTER_SIZE
];
5558 if (remote_protocol_packets
[PACKET_P
].support
== PACKET_DISABLE
)
5561 if (reg
->pnum
== -1)
5564 xsnprintf (buf
, get_remote_packet_size (), "P%s=", phex_nz (reg
->pnum
, 0));
5565 p
= buf
+ strlen (buf
);
5566 regcache_raw_collect (regcache
, reg
->regnum
, regp
);
5567 bin2hex (regp
, p
, register_size (gdbarch
, reg
->regnum
));
5569 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5571 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_P
]))
5576 error (_("Could not write register \"%s\"; remote failure reply '%s'"),
5577 gdbarch_register_name (gdbarch
, reg
->regnum
), rs
->buf
);
5578 case PACKET_UNKNOWN
:
5581 internal_error (__FILE__
, __LINE__
, _("Bad result from packet_ok"));
5585 /* Store register REGNUM, or all registers if REGNUM == -1, from the
5586 contents of the register cache buffer. FIXME: ignores errors. */
5589 store_registers_using_G (const struct regcache
*regcache
)
5591 struct remote_state
*rs
= get_remote_state ();
5592 struct remote_arch_state
*rsa
= get_remote_arch_state ();
5596 /* Extract all the registers in the regcache copying them into a
5600 regs
= alloca (rsa
->sizeof_g_packet
);
5601 memset (regs
, 0, rsa
->sizeof_g_packet
);
5602 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
5604 struct packet_reg
*r
= &rsa
->regs
[i
];
5606 regcache_raw_collect (regcache
, r
->regnum
, regs
+ r
->offset
);
5610 /* Command describes registers byte by byte,
5611 each byte encoded as two hex characters. */
5614 /* remote_prepare_to_store insures that rsa->sizeof_g_packet gets
5616 bin2hex (regs
, p
, rsa
->sizeof_g_packet
);
5618 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5619 if (packet_check_result (rs
->buf
) == PACKET_ERROR
)
5620 error (_("Could not write registers; remote failure reply '%s'"),
5624 /* Store register REGNUM, or all registers if REGNUM == -1, from the contents
5625 of the register cache buffer. FIXME: ignores errors. */
5628 remote_store_registers (struct target_ops
*ops
,
5629 struct regcache
*regcache
, int regnum
)
5631 struct remote_arch_state
*rsa
= get_remote_arch_state ();
5634 set_general_thread (inferior_ptid
);
5638 struct packet_reg
*reg
= packet_reg_from_regnum (rsa
, regnum
);
5639 gdb_assert (reg
!= NULL
);
5641 /* Always prefer to store registers using the 'P' packet if
5642 possible; we often change only a small number of registers.
5643 Sometimes we change a larger number; we'd need help from a
5644 higher layer to know to use 'G'. */
5645 if (store_register_using_P (regcache
, reg
))
5648 /* For now, don't complain if we have no way to write the
5649 register. GDB loses track of unavailable registers too
5650 easily. Some day, this may be an error. We don't have
5651 any way to read the register, either... */
5652 if (!reg
->in_g_packet
)
5655 store_registers_using_G (regcache
);
5659 store_registers_using_G (regcache
);
5661 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
5662 if (!rsa
->regs
[i
].in_g_packet
)
5663 if (!store_register_using_P (regcache
, &rsa
->regs
[i
]))
5664 /* See above for why we do not issue an error here. */
5669 /* Return the number of hex digits in num. */
5672 hexnumlen (ULONGEST num
)
5676 for (i
= 0; num
!= 0; i
++)
5682 /* Set BUF to the minimum number of hex digits representing NUM. */
5685 hexnumstr (char *buf
, ULONGEST num
)
5687 int len
= hexnumlen (num
);
5688 return hexnumnstr (buf
, num
, len
);
5692 /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */
5695 hexnumnstr (char *buf
, ULONGEST num
, int width
)
5701 for (i
= width
- 1; i
>= 0; i
--)
5703 buf
[i
] = "0123456789abcdef"[(num
& 0xf)];
5710 /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */
5713 remote_address_masked (CORE_ADDR addr
)
5715 int address_size
= remote_address_size
;
5716 /* If "remoteaddresssize" was not set, default to target address size. */
5718 address_size
= gdbarch_addr_bit (target_gdbarch
);
5720 if (address_size
> 0
5721 && address_size
< (sizeof (ULONGEST
) * 8))
5723 /* Only create a mask when that mask can safely be constructed
5724 in a ULONGEST variable. */
5726 mask
= (mask
<< address_size
) - 1;
5732 /* Convert BUFFER, binary data at least LEN bytes long, into escaped
5733 binary data in OUT_BUF. Set *OUT_LEN to the length of the data
5734 encoded in OUT_BUF, and return the number of bytes in OUT_BUF
5735 (which may be more than *OUT_LEN due to escape characters). The
5736 total number of bytes in the output buffer will be at most
5740 remote_escape_output (const gdb_byte
*buffer
, int len
,
5741 gdb_byte
*out_buf
, int *out_len
,
5744 int input_index
, output_index
;
5747 for (input_index
= 0; input_index
< len
; input_index
++)
5749 gdb_byte b
= buffer
[input_index
];
5751 if (b
== '$' || b
== '#' || b
== '}')
5753 /* These must be escaped. */
5754 if (output_index
+ 2 > out_maxlen
)
5756 out_buf
[output_index
++] = '}';
5757 out_buf
[output_index
++] = b
^ 0x20;
5761 if (output_index
+ 1 > out_maxlen
)
5763 out_buf
[output_index
++] = b
;
5767 *out_len
= input_index
;
5768 return output_index
;
5771 /* Convert BUFFER, escaped data LEN bytes long, into binary data
5772 in OUT_BUF. Return the number of bytes written to OUT_BUF.
5773 Raise an error if the total number of bytes exceeds OUT_MAXLEN.
5775 This function reverses remote_escape_output. It allows more
5776 escaped characters than that function does, in particular because
5777 '*' must be escaped to avoid the run-length encoding processing
5778 in reading packets. */
5781 remote_unescape_input (const gdb_byte
*buffer
, int len
,
5782 gdb_byte
*out_buf
, int out_maxlen
)
5784 int input_index
, output_index
;
5789 for (input_index
= 0; input_index
< len
; input_index
++)
5791 gdb_byte b
= buffer
[input_index
];
5793 if (output_index
+ 1 > out_maxlen
)
5795 warning (_("Received too much data from remote target;"
5796 " ignoring overflow."));
5797 return output_index
;
5802 out_buf
[output_index
++] = b
^ 0x20;
5808 out_buf
[output_index
++] = b
;
5812 error (_("Unmatched escape character in target response."));
5814 return output_index
;
5817 /* Determine whether the remote target supports binary downloading.
5818 This is accomplished by sending a no-op memory write of zero length
5819 to the target at the specified address. It does not suffice to send
5820 the whole packet, since many stubs strip the eighth bit and
5821 subsequently compute a wrong checksum, which causes real havoc with
5824 NOTE: This can still lose if the serial line is not eight-bit
5825 clean. In cases like this, the user should clear "remote
5829 check_binary_download (CORE_ADDR addr
)
5831 struct remote_state
*rs
= get_remote_state ();
5833 switch (remote_protocol_packets
[PACKET_X
].support
)
5835 case PACKET_DISABLE
:
5839 case PACKET_SUPPORT_UNKNOWN
:
5845 p
+= hexnumstr (p
, (ULONGEST
) addr
);
5847 p
+= hexnumstr (p
, (ULONGEST
) 0);
5851 putpkt_binary (rs
->buf
, (int) (p
- rs
->buf
));
5852 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5854 if (rs
->buf
[0] == '\0')
5857 fprintf_unfiltered (gdb_stdlog
,
5858 "binary downloading NOT suppported by target\n");
5859 remote_protocol_packets
[PACKET_X
].support
= PACKET_DISABLE
;
5864 fprintf_unfiltered (gdb_stdlog
,
5865 "binary downloading suppported by target\n");
5866 remote_protocol_packets
[PACKET_X
].support
= PACKET_ENABLE
;
5873 /* Write memory data directly to the remote machine.
5874 This does not inform the data cache; the data cache uses this.
5875 HEADER is the starting part of the packet.
5876 MEMADDR is the address in the remote memory space.
5877 MYADDR is the address of the buffer in our space.
5878 LEN is the number of bytes.
5879 PACKET_FORMAT should be either 'X' or 'M', and indicates if we
5880 should send data as binary ('X'), or hex-encoded ('M').
5882 The function creates packet of the form
5883 <HEADER><ADDRESS>,<LENGTH>:<DATA>
5885 where encoding of <DATA> is termined by PACKET_FORMAT.
5887 If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma
5890 Returns the number of bytes transferred, or 0 (setting errno) for
5891 error. Only transfer a single packet. */
5894 remote_write_bytes_aux (const char *header
, CORE_ADDR memaddr
,
5895 const gdb_byte
*myaddr
, int len
,
5896 char packet_format
, int use_length
)
5898 struct remote_state
*rs
= get_remote_state ();
5908 if (packet_format
!= 'X' && packet_format
!= 'M')
5909 internal_error (__FILE__
, __LINE__
,
5910 "remote_write_bytes_aux: bad packet format");
5915 payload_size
= get_memory_write_packet_size ();
5917 /* The packet buffer will be large enough for the payload;
5918 get_memory_packet_size ensures this. */
5921 /* Compute the size of the actual payload by subtracting out the
5922 packet header and footer overhead: "$M<memaddr>,<len>:...#nn".
5924 payload_size
-= strlen ("$,:#NN");
5926 /* The comma won't be used. */
5928 header_length
= strlen (header
);
5929 payload_size
-= header_length
;
5930 payload_size
-= hexnumlen (memaddr
);
5932 /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */
5934 strcat (rs
->buf
, header
);
5935 p
= rs
->buf
+ strlen (header
);
5937 /* Compute a best guess of the number of bytes actually transfered. */
5938 if (packet_format
== 'X')
5940 /* Best guess at number of bytes that will fit. */
5941 todo
= min (len
, payload_size
);
5943 payload_size
-= hexnumlen (todo
);
5944 todo
= min (todo
, payload_size
);
5948 /* Num bytes that will fit. */
5949 todo
= min (len
, payload_size
/ 2);
5951 payload_size
-= hexnumlen (todo
);
5952 todo
= min (todo
, payload_size
/ 2);
5956 internal_error (__FILE__
, __LINE__
,
5957 _("minumum packet size too small to write data"));
5959 /* If we already need another packet, then try to align the end
5960 of this packet to a useful boundary. */
5961 if (todo
> 2 * REMOTE_ALIGN_WRITES
&& todo
< len
)
5962 todo
= ((memaddr
+ todo
) & ~(REMOTE_ALIGN_WRITES
- 1)) - memaddr
;
5964 /* Append "<memaddr>". */
5965 memaddr
= remote_address_masked (memaddr
);
5966 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
5973 /* Append <len>. Retain the location/size of <len>. It may need to
5974 be adjusted once the packet body has been created. */
5976 plenlen
= hexnumstr (p
, (ULONGEST
) todo
);
5984 /* Append the packet body. */
5985 if (packet_format
== 'X')
5987 /* Binary mode. Send target system values byte by byte, in
5988 increasing byte addresses. Only escape certain critical
5990 payload_length
= remote_escape_output (myaddr
, todo
, p
, &nr_bytes
,
5993 /* If not all TODO bytes fit, then we'll need another packet. Make
5994 a second try to keep the end of the packet aligned. Don't do
5995 this if the packet is tiny. */
5996 if (nr_bytes
< todo
&& nr_bytes
> 2 * REMOTE_ALIGN_WRITES
)
6000 new_nr_bytes
= (((memaddr
+ nr_bytes
) & ~(REMOTE_ALIGN_WRITES
- 1))
6002 if (new_nr_bytes
!= nr_bytes
)
6003 payload_length
= remote_escape_output (myaddr
, new_nr_bytes
,
6008 p
+= payload_length
;
6009 if (use_length
&& nr_bytes
< todo
)
6011 /* Escape chars have filled up the buffer prematurely,
6012 and we have actually sent fewer bytes than planned.
6013 Fix-up the length field of the packet. Use the same
6014 number of characters as before. */
6015 plen
+= hexnumnstr (plen
, (ULONGEST
) nr_bytes
, plenlen
);
6016 *plen
= ':'; /* overwrite \0 from hexnumnstr() */
6021 /* Normal mode: Send target system values byte by byte, in
6022 increasing byte addresses. Each byte is encoded as a two hex
6024 nr_bytes
= bin2hex (myaddr
, p
, todo
);
6028 putpkt_binary (rs
->buf
, (int) (p
- rs
->buf
));
6029 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6031 if (rs
->buf
[0] == 'E')
6033 /* There is no correspondance between what the remote protocol
6034 uses for errors and errno codes. We would like a cleaner way
6035 of representing errors (big enough to include errno codes,
6036 bfd_error codes, and others). But for now just return EIO. */
6041 /* Return NR_BYTES, not TODO, in case escape chars caused us to send
6042 fewer bytes than we'd planned. */
6046 /* Write memory data directly to the remote machine.
6047 This does not inform the data cache; the data cache uses this.
6048 MEMADDR is the address in the remote memory space.
6049 MYADDR is the address of the buffer in our space.
6050 LEN is the number of bytes.
6052 Returns number of bytes transferred, or 0 (setting errno) for
6053 error. Only transfer a single packet. */
6056 remote_write_bytes (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, int len
)
6058 char *packet_format
= 0;
6060 /* Check whether the target supports binary download. */
6061 check_binary_download (memaddr
);
6063 switch (remote_protocol_packets
[PACKET_X
].support
)
6066 packet_format
= "X";
6068 case PACKET_DISABLE
:
6069 packet_format
= "M";
6071 case PACKET_SUPPORT_UNKNOWN
:
6072 internal_error (__FILE__
, __LINE__
,
6073 _("remote_write_bytes: bad internal state"));
6075 internal_error (__FILE__
, __LINE__
, _("bad switch"));
6078 return remote_write_bytes_aux (packet_format
,
6079 memaddr
, myaddr
, len
, packet_format
[0], 1);
6082 /* Read memory data directly from the remote machine.
6083 This does not use the data cache; the data cache uses this.
6084 MEMADDR is the address in the remote memory space.
6085 MYADDR is the address of the buffer in our space.
6086 LEN is the number of bytes.
6088 Returns number of bytes transferred, or 0 for error. */
6090 /* NOTE: cagney/1999-10-18: This function (and its siblings in other
6091 remote targets) shouldn't attempt to read the entire buffer.
6092 Instead it should read a single packet worth of data and then
6093 return the byte size of that packet to the caller. The caller (its
6094 caller and its callers caller ;-) already contains code for
6095 handling partial reads. */
6098 remote_read_bytes (CORE_ADDR memaddr
, gdb_byte
*myaddr
, int len
)
6100 struct remote_state
*rs
= get_remote_state ();
6101 int max_buf_size
; /* Max size of packet output buffer. */
6107 max_buf_size
= get_memory_read_packet_size ();
6108 /* The packet buffer will be large enough for the payload;
6109 get_memory_packet_size ensures this. */
6118 todo
= min (len
, max_buf_size
/ 2); /* num bytes that will fit */
6120 /* construct "m"<memaddr>","<len>" */
6121 /* sprintf (rs->buf, "m%lx,%x", (unsigned long) memaddr, todo); */
6122 memaddr
= remote_address_masked (memaddr
);
6125 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
6127 p
+= hexnumstr (p
, (ULONGEST
) todo
);
6131 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6133 if (rs
->buf
[0] == 'E'
6134 && isxdigit (rs
->buf
[1]) && isxdigit (rs
->buf
[2])
6135 && rs
->buf
[3] == '\0')
6137 /* There is no correspondance between what the remote
6138 protocol uses for errors and errno codes. We would like
6139 a cleaner way of representing errors (big enough to
6140 include errno codes, bfd_error codes, and others). But
6141 for now just return EIO. */
6146 /* Reply describes memory byte by byte,
6147 each byte encoded as two hex characters. */
6150 if ((i
= hex2bin (p
, myaddr
, todo
)) < todo
)
6152 /* Reply is short. This means that we were able to read
6153 only part of what we wanted to. */
6154 return i
+ (origlen
- len
);
6164 /* Remote notification handler. */
6167 handle_notification (char *buf
, size_t length
)
6169 if (strncmp (buf
, "Stop:", 5) == 0)
6171 if (pending_stop_reply
)
6172 /* We've already parsed the in-flight stop-reply, but the stub
6173 for some reason thought we didn't, possibly due to timeout
6174 on its side. Just ignore it. */
6178 struct cleanup
*old_chain
;
6179 struct stop_reply
*reply
= stop_reply_xmalloc ();
6180 old_chain
= make_cleanup (do_stop_reply_xfree
, reply
);
6182 remote_parse_stop_reply (buf
+ 5, reply
);
6184 discard_cleanups (old_chain
);
6186 /* Be careful to only set it after parsing, since an error
6187 may be thrown then. */
6188 pending_stop_reply
= reply
;
6190 /* Notify the event loop there's a stop reply to acknowledge
6191 and that there may be more events to fetch. */
6192 mark_async_event_handler (remote_async_get_pending_events_token
);
6196 /* We ignore notifications we don't recognize, for compatibility
6197 with newer stubs. */
6202 /* Read or write LEN bytes from inferior memory at MEMADDR,
6203 transferring to or from debugger address BUFFER. Write to inferior
6204 if SHOULD_WRITE is nonzero. Returns length of data written or
6205 read; 0 for error. TARGET is unused. */
6208 remote_xfer_memory (CORE_ADDR mem_addr
, gdb_byte
*buffer
, int mem_len
,
6209 int should_write
, struct mem_attrib
*attrib
,
6210 struct target_ops
*target
)
6214 set_general_thread (inferior_ptid
);
6217 res
= remote_write_bytes (mem_addr
, buffer
, mem_len
);
6219 res
= remote_read_bytes (mem_addr
, buffer
, mem_len
);
6224 /* Sends a packet with content determined by the printf format string
6225 FORMAT and the remaining arguments, then gets the reply. Returns
6226 whether the packet was a success, a failure, or unknown. */
6228 static enum packet_result
6229 remote_send_printf (const char *format
, ...)
6231 struct remote_state
*rs
= get_remote_state ();
6232 int max_size
= get_remote_packet_size ();
6235 va_start (ap
, format
);
6238 if (vsnprintf (rs
->buf
, max_size
, format
, ap
) >= max_size
)
6239 internal_error (__FILE__
, __LINE__
, "Too long remote packet.");
6241 if (putpkt (rs
->buf
) < 0)
6242 error (_("Communication problem with target."));
6245 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6247 return packet_check_result (rs
->buf
);
6251 restore_remote_timeout (void *p
)
6253 int value
= *(int *)p
;
6254 remote_timeout
= value
;
6257 /* Flash writing can take quite some time. We'll set
6258 effectively infinite timeout for flash operations.
6259 In future, we'll need to decide on a better approach. */
6260 static const int remote_flash_timeout
= 1000;
6263 remote_flash_erase (struct target_ops
*ops
,
6264 ULONGEST address
, LONGEST length
)
6266 int addr_size
= gdbarch_addr_bit (target_gdbarch
) / 8;
6267 int saved_remote_timeout
= remote_timeout
;
6268 enum packet_result ret
;
6270 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
6271 &saved_remote_timeout
);
6272 remote_timeout
= remote_flash_timeout
;
6274 ret
= remote_send_printf ("vFlashErase:%s,%s",
6275 phex (address
, addr_size
),
6279 case PACKET_UNKNOWN
:
6280 error (_("Remote target does not support flash erase"));
6282 error (_("Error erasing flash with vFlashErase packet"));
6287 do_cleanups (back_to
);
6291 remote_flash_write (struct target_ops
*ops
,
6292 ULONGEST address
, LONGEST length
,
6293 const gdb_byte
*data
)
6295 int saved_remote_timeout
= remote_timeout
;
6297 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
6298 &saved_remote_timeout
);
6300 remote_timeout
= remote_flash_timeout
;
6301 ret
= remote_write_bytes_aux ("vFlashWrite:", address
, data
, length
, 'X', 0);
6302 do_cleanups (back_to
);
6308 remote_flash_done (struct target_ops
*ops
)
6310 int saved_remote_timeout
= remote_timeout
;
6312 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
6313 &saved_remote_timeout
);
6315 remote_timeout
= remote_flash_timeout
;
6316 ret
= remote_send_printf ("vFlashDone");
6317 do_cleanups (back_to
);
6321 case PACKET_UNKNOWN
:
6322 error (_("Remote target does not support vFlashDone"));
6324 error (_("Error finishing flash operation"));
6331 remote_files_info (struct target_ops
*ignore
)
6333 puts_filtered ("Debugging a target over a serial line.\n");
6336 /* Stuff for dealing with the packets which are part of this protocol.
6337 See comment at top of file for details. */
6339 /* Read a single character from the remote end. */
6342 readchar (int timeout
)
6346 ch
= serial_readchar (remote_desc
, timeout
);
6351 switch ((enum serial_rc
) ch
)
6355 error (_("Remote connection closed"));
6358 perror_with_name (_("Remote communication error"));
6360 case SERIAL_TIMEOUT
:
6366 /* Send the command in *BUF to the remote machine, and read the reply
6367 into *BUF. Report an error if we get an error reply. Resize
6368 *BUF using xrealloc if necessary to hold the result, and update
6372 remote_send (char **buf
,
6376 getpkt (buf
, sizeof_buf
, 0);
6378 if ((*buf
)[0] == 'E')
6379 error (_("Remote failure reply: %s"), *buf
);
6382 /* Return a pointer to an xmalloc'ed string representing an escaped
6383 version of BUF, of len N. E.g. \n is converted to \\n, \t to \\t,
6384 etc. The caller is responsible for releasing the returned
6388 escape_buffer (const char *buf
, int n
)
6390 struct cleanup
*old_chain
;
6391 struct ui_file
*stb
;
6394 stb
= mem_fileopen ();
6395 old_chain
= make_cleanup_ui_file_delete (stb
);
6397 fputstrn_unfiltered (buf
, n
, 0, stb
);
6398 str
= ui_file_xstrdup (stb
, NULL
);
6399 do_cleanups (old_chain
);
6403 /* Display a null-terminated packet on stdout, for debugging, using C
6407 print_packet (char *buf
)
6409 puts_filtered ("\"");
6410 fputstr_filtered (buf
, '"', gdb_stdout
);
6411 puts_filtered ("\"");
6417 return putpkt_binary (buf
, strlen (buf
));
6420 /* Send a packet to the remote machine, with error checking. The data
6421 of the packet is in BUF. The string in BUF can be at most
6422 get_remote_packet_size () - 5 to account for the $, # and checksum,
6423 and for a possible /0 if we are debugging (remote_debug) and want
6424 to print the sent packet as a string. */
6427 putpkt_binary (char *buf
, int cnt
)
6429 struct remote_state
*rs
= get_remote_state ();
6431 unsigned char csum
= 0;
6432 char *buf2
= alloca (cnt
+ 6);
6438 /* Catch cases like trying to read memory or listing threads while
6439 we're waiting for a stop reply. The remote server wouldn't be
6440 ready to handle this request, so we'd hang and timeout. We don't
6441 have to worry about this in synchronous mode, because in that
6442 case it's not possible to issue a command while the target is
6443 running. This is not a problem in non-stop mode, because in that
6444 case, the stub is always ready to process serial input. */
6445 if (!non_stop
&& target_can_async_p () && rs
->waiting_for_stop_reply
)
6446 error (_("Cannot execute this command while the target is running."));
6448 /* We're sending out a new packet. Make sure we don't look at a
6449 stale cached response. */
6450 rs
->cached_wait_status
= 0;
6452 /* Copy the packet into buffer BUF2, encapsulating it
6453 and giving it a checksum. */
6458 for (i
= 0; i
< cnt
; i
++)
6464 *p
++ = tohex ((csum
>> 4) & 0xf);
6465 *p
++ = tohex (csum
& 0xf);
6467 /* Send it over and over until we get a positive ack. */
6471 int started_error_output
= 0;
6475 struct cleanup
*old_chain
;
6479 str
= escape_buffer (buf2
, p
- buf2
);
6480 old_chain
= make_cleanup (xfree
, str
);
6481 fprintf_unfiltered (gdb_stdlog
, "Sending packet: %s...", str
);
6482 gdb_flush (gdb_stdlog
);
6483 do_cleanups (old_chain
);
6485 if (serial_write (remote_desc
, buf2
, p
- buf2
))
6486 perror_with_name (_("putpkt: write failed"));
6488 /* If this is a no acks version of the remote protocol, send the
6489 packet and move on. */
6493 /* Read until either a timeout occurs (-2) or '+' is read.
6494 Handle any notification that arrives in the mean time. */
6497 ch
= readchar (remote_timeout
);
6505 case SERIAL_TIMEOUT
:
6508 if (started_error_output
)
6510 putchar_unfiltered ('\n');
6511 started_error_output
= 0;
6520 fprintf_unfiltered (gdb_stdlog
, "Ack\n");
6524 fprintf_unfiltered (gdb_stdlog
, "Nak\n");
6525 case SERIAL_TIMEOUT
:
6529 break; /* Retransmit buffer. */
6533 fprintf_unfiltered (gdb_stdlog
,
6534 "Packet instead of Ack, ignoring it\n");
6535 /* It's probably an old response sent because an ACK
6536 was lost. Gobble up the packet and ack it so it
6537 doesn't get retransmitted when we resend this
6540 serial_write (remote_desc
, "+", 1);
6541 continue; /* Now, go look for +. */
6548 /* If we got a notification, handle it, and go back to looking
6550 /* We've found the start of a notification. Now
6551 collect the data. */
6552 val
= read_frame (&rs
->buf
, &rs
->buf_size
);
6557 struct cleanup
*old_chain
;
6560 str
= escape_buffer (rs
->buf
, val
);
6561 old_chain
= make_cleanup (xfree
, str
);
6562 fprintf_unfiltered (gdb_stdlog
,
6563 " Notification received: %s\n",
6565 do_cleanups (old_chain
);
6567 handle_notification (rs
->buf
, val
);
6568 /* We're in sync now, rewait for the ack. */
6575 if (!started_error_output
)
6577 started_error_output
= 1;
6578 fprintf_unfiltered (gdb_stdlog
, "putpkt: Junk: ");
6580 fputc_unfiltered (ch
& 0177, gdb_stdlog
);
6581 fprintf_unfiltered (gdb_stdlog
, "%s", rs
->buf
);
6590 if (!started_error_output
)
6592 started_error_output
= 1;
6593 fprintf_unfiltered (gdb_stdlog
, "putpkt: Junk: ");
6595 fputc_unfiltered (ch
& 0177, gdb_stdlog
);
6599 break; /* Here to retransmit. */
6603 /* This is wrong. If doing a long backtrace, the user should be
6604 able to get out next time we call QUIT, without anything as
6605 violent as interrupt_query. If we want to provide a way out of
6606 here without getting to the next QUIT, it should be based on
6607 hitting ^C twice as in remote_wait. */
6618 /* Come here after finding the start of a frame when we expected an
6619 ack. Do our best to discard the rest of this packet. */
6628 c
= readchar (remote_timeout
);
6631 case SERIAL_TIMEOUT
:
6632 /* Nothing we can do. */
6635 /* Discard the two bytes of checksum and stop. */
6636 c
= readchar (remote_timeout
);
6638 c
= readchar (remote_timeout
);
6641 case '*': /* Run length encoding. */
6642 /* Discard the repeat count. */
6643 c
= readchar (remote_timeout
);
6648 /* A regular character. */
6654 /* Come here after finding the start of the frame. Collect the rest
6655 into *BUF, verifying the checksum, length, and handling run-length
6656 compression. NUL terminate the buffer. If there is not enough room,
6657 expand *BUF using xrealloc.
6659 Returns -1 on error, number of characters in buffer (ignoring the
6660 trailing NULL) on success. (could be extended to return one of the
6661 SERIAL status indications). */
6664 read_frame (char **buf_p
,
6671 struct remote_state
*rs
= get_remote_state ();
6678 c
= readchar (remote_timeout
);
6681 case SERIAL_TIMEOUT
:
6683 fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog
);
6687 fputs_filtered ("Saw new packet start in middle of old one\n",
6689 return -1; /* Start a new packet, count retries. */
6692 unsigned char pktcsum
;
6698 check_0
= readchar (remote_timeout
);
6700 check_1
= readchar (remote_timeout
);
6702 if (check_0
== SERIAL_TIMEOUT
|| check_1
== SERIAL_TIMEOUT
)
6705 fputs_filtered ("Timeout in checksum, retrying\n",
6709 else if (check_0
< 0 || check_1
< 0)
6712 fputs_filtered ("Communication error in checksum\n",
6717 /* Don't recompute the checksum; with no ack packets we
6718 don't have any way to indicate a packet retransmission
6723 pktcsum
= (fromhex (check_0
) << 4) | fromhex (check_1
);
6724 if (csum
== pktcsum
)
6729 struct cleanup
*old_chain
;
6732 str
= escape_buffer (buf
, bc
);
6733 old_chain
= make_cleanup (xfree
, str
);
6734 fprintf_unfiltered (gdb_stdlog
,
6736 Bad checksum, sentsum=0x%x, csum=0x%x, buf=%s\n",
6737 pktcsum
, csum
, str
);
6738 do_cleanups (old_chain
);
6740 /* Number of characters in buffer ignoring trailing
6744 case '*': /* Run length encoding. */
6749 c
= readchar (remote_timeout
);
6751 repeat
= c
- ' ' + 3; /* Compute repeat count. */
6753 /* The character before ``*'' is repeated. */
6755 if (repeat
> 0 && repeat
<= 255 && bc
> 0)
6757 if (bc
+ repeat
- 1 >= *sizeof_buf
- 1)
6759 /* Make some more room in the buffer. */
6760 *sizeof_buf
+= repeat
;
6761 *buf_p
= xrealloc (*buf_p
, *sizeof_buf
);
6765 memset (&buf
[bc
], buf
[bc
- 1], repeat
);
6771 printf_filtered (_("Invalid run length encoding: %s\n"), buf
);
6775 if (bc
>= *sizeof_buf
- 1)
6777 /* Make some more room in the buffer. */
6779 *buf_p
= xrealloc (*buf_p
, *sizeof_buf
);
6790 /* Read a packet from the remote machine, with error checking, and
6791 store it in *BUF. Resize *BUF using xrealloc if necessary to hold
6792 the result, and update *SIZEOF_BUF. If FOREVER, wait forever
6793 rather than timing out; this is used (in synchronous mode) to wait
6794 for a target that is is executing user code to stop. */
6795 /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we
6796 don't have to change all the calls to getpkt to deal with the
6797 return value, because at the moment I don't know what the right
6798 thing to do it for those. */
6806 timed_out
= getpkt_sane (buf
, sizeof_buf
, forever
);
6810 /* Read a packet from the remote machine, with error checking, and
6811 store it in *BUF. Resize *BUF using xrealloc if necessary to hold
6812 the result, and update *SIZEOF_BUF. If FOREVER, wait forever
6813 rather than timing out; this is used (in synchronous mode) to wait
6814 for a target that is is executing user code to stop. If FOREVER ==
6815 0, this function is allowed to time out gracefully and return an
6816 indication of this to the caller. Otherwise return the number of
6817 bytes read. If EXPECTING_NOTIF, consider receiving a notification
6818 enough reason to return to the caller. */
6821 getpkt_or_notif_sane_1 (char **buf
, long *sizeof_buf
, int forever
,
6822 int expecting_notif
)
6824 struct remote_state
*rs
= get_remote_state ();
6830 /* We're reading a new response. Make sure we don't look at a
6831 previously cached response. */
6832 rs
->cached_wait_status
= 0;
6834 strcpy (*buf
, "timeout");
6837 timeout
= watchdog
> 0 ? watchdog
: -1;
6838 else if (expecting_notif
)
6839 timeout
= 0; /* There should already be a char in the buffer. If
6842 timeout
= remote_timeout
;
6846 /* Process any number of notifications, and then return when
6850 /* If we get a timeout or bad checksm, retry up to MAX_TRIES
6852 for (tries
= 1; tries
<= MAX_TRIES
; tries
++)
6854 /* This can loop forever if the remote side sends us
6855 characters continuously, but if it pauses, we'll get
6856 SERIAL_TIMEOUT from readchar because of timeout. Then
6857 we'll count that as a retry.
6859 Note that even when forever is set, we will only wait
6860 forever prior to the start of a packet. After that, we
6861 expect characters to arrive at a brisk pace. They should
6862 show up within remote_timeout intervals. */
6864 c
= readchar (timeout
);
6865 while (c
!= SERIAL_TIMEOUT
&& c
!= '$' && c
!= '%');
6867 if (c
== SERIAL_TIMEOUT
)
6869 if (expecting_notif
)
6870 return -1; /* Don't complain, it's normal to not get
6871 anything in this case. */
6873 if (forever
) /* Watchdog went off? Kill the target. */
6877 error (_("Watchdog timeout has expired. Target detached."));
6880 fputs_filtered ("Timed out.\n", gdb_stdlog
);
6884 /* We've found the start of a packet or notification.
6885 Now collect the data. */
6886 val
= read_frame (buf
, sizeof_buf
);
6891 serial_write (remote_desc
, "-", 1);
6894 if (tries
> MAX_TRIES
)
6896 /* We have tried hard enough, and just can't receive the
6897 packet/notification. Give up. */
6898 printf_unfiltered (_("Ignoring packet error, continuing...\n"));
6900 /* Skip the ack char if we're in no-ack mode. */
6901 if (!rs
->noack_mode
)
6902 serial_write (remote_desc
, "+", 1);
6906 /* If we got an ordinary packet, return that to our caller. */
6911 struct cleanup
*old_chain
;
6914 str
= escape_buffer (*buf
, val
);
6915 old_chain
= make_cleanup (xfree
, str
);
6916 fprintf_unfiltered (gdb_stdlog
, "Packet received: %s\n", str
);
6917 do_cleanups (old_chain
);
6920 /* Skip the ack char if we're in no-ack mode. */
6921 if (!rs
->noack_mode
)
6922 serial_write (remote_desc
, "+", 1);
6926 /* If we got a notification, handle it, and go back to looking
6930 gdb_assert (c
== '%');
6934 struct cleanup
*old_chain
;
6937 str
= escape_buffer (*buf
, val
);
6938 old_chain
= make_cleanup (xfree
, str
);
6939 fprintf_unfiltered (gdb_stdlog
,
6940 " Notification received: %s\n",
6942 do_cleanups (old_chain
);
6945 handle_notification (*buf
, val
);
6947 /* Notifications require no acknowledgement. */
6949 if (expecting_notif
)
6956 getpkt_sane (char **buf
, long *sizeof_buf
, int forever
)
6958 return getpkt_or_notif_sane_1 (buf
, sizeof_buf
, forever
, 0);
6962 getpkt_or_notif_sane (char **buf
, long *sizeof_buf
, int forever
)
6964 return getpkt_or_notif_sane_1 (buf
, sizeof_buf
, forever
, 1);
6969 remote_kill (struct target_ops
*ops
)
6971 /* Use catch_errors so the user can quit from gdb even when we
6972 aren't on speaking terms with the remote system. */
6973 catch_errors ((catch_errors_ftype
*) putpkt
, "k", "", RETURN_MASK_ERROR
);
6975 /* Don't wait for it to die. I'm not really sure it matters whether
6976 we do or not. For the existing stubs, kill is a noop. */
6977 target_mourn_inferior ();
6981 remote_vkill (int pid
, struct remote_state
*rs
)
6983 if (remote_protocol_packets
[PACKET_vKill
].support
== PACKET_DISABLE
)
6986 /* Tell the remote target to detach. */
6987 sprintf (rs
->buf
, "vKill;%x", pid
);
6989 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6991 if (packet_ok (rs
->buf
,
6992 &remote_protocol_packets
[PACKET_vKill
]) == PACKET_OK
)
6994 else if (remote_protocol_packets
[PACKET_vKill
].support
== PACKET_DISABLE
)
7001 extended_remote_kill (struct target_ops
*ops
)
7004 int pid
= ptid_get_pid (inferior_ptid
);
7005 struct remote_state
*rs
= get_remote_state ();
7007 res
= remote_vkill (pid
, rs
);
7008 if (res
== -1 && !remote_multi_process_p (rs
))
7010 /* Don't try 'k' on a multi-process aware stub -- it has no way
7011 to specify the pid. */
7015 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7016 if (rs
->buf
[0] != 'O' || rs
->buf
[0] != 'K')
7019 /* Don't wait for it to die. I'm not really sure it matters whether
7020 we do or not. For the existing stubs, kill is a noop. */
7026 error (_("Can't kill process"));
7028 target_mourn_inferior ();
7032 remote_mourn (struct target_ops
*ops
)
7034 remote_mourn_1 (ops
);
7037 /* Worker function for remote_mourn. */
7039 remote_mourn_1 (struct target_ops
*target
)
7041 unpush_target (target
);
7043 /* remote_close takes care of doing most of the clean up. */
7044 generic_mourn_inferior ();
7048 extended_remote_mourn_1 (struct target_ops
*target
)
7050 struct remote_state
*rs
= get_remote_state ();
7052 /* In case we got here due to an error, but we're going to stay
7054 rs
->waiting_for_stop_reply
= 0;
7056 /* We're no longer interested in these events. */
7057 discard_pending_stop_replies (ptid_get_pid (inferior_ptid
));
7059 /* If the current general thread belonged to the process we just
7060 detached from or has exited, the remote side current general
7061 thread becomes undefined. Considering a case like this:
7063 - We just got here due to a detach.
7064 - The process that we're detaching from happens to immediately
7065 report a global breakpoint being hit in non-stop mode, in the
7066 same thread we had selected before.
7067 - GDB attaches to this process again.
7068 - This event happens to be the next event we handle.
7070 GDB would consider that the current general thread didn't need to
7071 be set on the stub side (with Hg), since for all it knew,
7072 GENERAL_THREAD hadn't changed.
7074 Notice that although in all-stop mode, the remote server always
7075 sets the current thread to the thread reporting the stop event,
7076 that doesn't happen in non-stop mode; in non-stop, the stub *must
7077 not* change the current thread when reporting a breakpoint hit,
7078 due to the decoupling of event reporting and event handling.
7080 To keep things simple, we always invalidate our notion of the
7082 record_currthread (minus_one_ptid
);
7084 /* Unlike "target remote", we do not want to unpush the target; then
7085 the next time the user says "run", we won't be connected. */
7087 /* Call common code to mark the inferior as not running. */
7088 generic_mourn_inferior ();
7090 if (!have_inferiors ())
7092 if (!remote_multi_process_p (rs
))
7094 /* Check whether the target is running now - some remote stubs
7095 automatically restart after kill. */
7097 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7099 if (rs
->buf
[0] == 'S' || rs
->buf
[0] == 'T')
7101 /* Assume that the target has been restarted. Set inferior_ptid
7102 so that bits of core GDB realizes there's something here, e.g.,
7103 so that the user can say "kill" again. */
7104 inferior_ptid
= magic_null_ptid
;
7111 extended_remote_mourn (struct target_ops
*ops
)
7113 extended_remote_mourn_1 (ops
);
7117 extended_remote_run (char *args
)
7119 struct remote_state
*rs
= get_remote_state ();
7122 /* If the user has disabled vRun support, or we have detected that
7123 support is not available, do not try it. */
7124 if (remote_protocol_packets
[PACKET_vRun
].support
== PACKET_DISABLE
)
7127 strcpy (rs
->buf
, "vRun;");
7128 len
= strlen (rs
->buf
);
7130 if (strlen (remote_exec_file
) * 2 + len
>= get_remote_packet_size ())
7131 error (_("Remote file name too long for run packet"));
7132 len
+= 2 * bin2hex ((gdb_byte
*) remote_exec_file
, rs
->buf
+ len
, 0);
7134 gdb_assert (args
!= NULL
);
7137 struct cleanup
*back_to
;
7141 argv
= gdb_buildargv (args
);
7142 back_to
= make_cleanup ((void (*) (void *)) freeargv
, argv
);
7143 for (i
= 0; argv
[i
] != NULL
; i
++)
7145 if (strlen (argv
[i
]) * 2 + 1 + len
>= get_remote_packet_size ())
7146 error (_("Argument list too long for run packet"));
7147 rs
->buf
[len
++] = ';';
7148 len
+= 2 * bin2hex ((gdb_byte
*) argv
[i
], rs
->buf
+ len
, 0);
7150 do_cleanups (back_to
);
7153 rs
->buf
[len
++] = '\0';
7156 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7158 if (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_vRun
]) == PACKET_OK
)
7160 /* We have a wait response; we don't need it, though. All is well. */
7163 else if (remote_protocol_packets
[PACKET_vRun
].support
== PACKET_DISABLE
)
7164 /* It wasn't disabled before, but it is now. */
7168 if (remote_exec_file
[0] == '\0')
7169 error (_("Running the default executable on the remote target failed; "
7170 "try \"set remote exec-file\"?"));
7172 error (_("Running \"%s\" on the remote target failed"),
7177 /* In the extended protocol we want to be able to do things like
7178 "run" and have them basically work as expected. So we need
7179 a special create_inferior function. We support changing the
7180 executable file and the command line arguments, but not the
7184 extended_remote_create_inferior_1 (char *exec_file
, char *args
,
7185 char **env
, int from_tty
)
7187 /* If running asynchronously, register the target file descriptor
7188 with the event loop. */
7189 if (target_can_async_p ())
7190 target_async (inferior_event_handler
, 0);
7192 /* Now restart the remote server. */
7193 if (extended_remote_run (args
) == -1)
7195 /* vRun was not supported. Fail if we need it to do what the
7197 if (remote_exec_file
[0])
7198 error (_("Remote target does not support \"set remote exec-file\""));
7200 error (_("Remote target does not support \"set args\" or run <ARGS>"));
7202 /* Fall back to "R". */
7203 extended_remote_restart ();
7206 if (!have_inferiors ())
7208 /* Clean up from the last time we ran, before we mark the target
7209 running again. This will mark breakpoints uninserted, and
7210 get_offsets may insert breakpoints. */
7211 init_thread_list ();
7212 init_wait_for_inferior ();
7215 /* Now mark the inferior as running before we do anything else. */
7216 inferior_ptid
= magic_null_ptid
;
7218 /* Now, if we have thread information, update inferior_ptid. */
7219 inferior_ptid
= remote_current_thread (inferior_ptid
);
7221 remote_add_inferior (ptid_get_pid (inferior_ptid
), 0);
7222 add_thread_silent (inferior_ptid
);
7224 /* Get updated offsets, if the stub uses qOffsets. */
7229 extended_remote_create_inferior (struct target_ops
*ops
,
7230 char *exec_file
, char *args
,
7231 char **env
, int from_tty
)
7233 extended_remote_create_inferior_1 (exec_file
, args
, env
, from_tty
);
7237 /* Insert a breakpoint. On targets that have software breakpoint
7238 support, we ask the remote target to do the work; on targets
7239 which don't, we insert a traditional memory breakpoint. */
7242 remote_insert_breakpoint (struct gdbarch
*gdbarch
,
7243 struct bp_target_info
*bp_tgt
)
7245 /* Try the "Z" s/w breakpoint packet if it is not already disabled.
7246 If it succeeds, then set the support to PACKET_ENABLE. If it
7247 fails, and the user has explicitly requested the Z support then
7248 report an error, otherwise, mark it disabled and go on. */
7250 if (remote_protocol_packets
[PACKET_Z0
].support
!= PACKET_DISABLE
)
7252 CORE_ADDR addr
= bp_tgt
->placed_address
;
7253 struct remote_state
*rs
;
7257 gdbarch_remote_breakpoint_from_pc (gdbarch
, &addr
, &bpsize
);
7259 rs
= get_remote_state ();
7265 addr
= (ULONGEST
) remote_address_masked (addr
);
7266 p
+= hexnumstr (p
, addr
);
7267 sprintf (p
, ",%d", bpsize
);
7270 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7272 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
]))
7277 bp_tgt
->placed_address
= addr
;
7278 bp_tgt
->placed_size
= bpsize
;
7280 case PACKET_UNKNOWN
:
7285 return memory_insert_breakpoint (gdbarch
, bp_tgt
);
7289 remote_remove_breakpoint (struct gdbarch
*gdbarch
,
7290 struct bp_target_info
*bp_tgt
)
7292 CORE_ADDR addr
= bp_tgt
->placed_address
;
7293 struct remote_state
*rs
= get_remote_state ();
7295 if (remote_protocol_packets
[PACKET_Z0
].support
!= PACKET_DISABLE
)
7303 addr
= (ULONGEST
) remote_address_masked (bp_tgt
->placed_address
);
7304 p
+= hexnumstr (p
, addr
);
7305 sprintf (p
, ",%d", bp_tgt
->placed_size
);
7308 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7310 return (rs
->buf
[0] == 'E');
7313 return memory_remove_breakpoint (gdbarch
, bp_tgt
);
7317 watchpoint_to_Z_packet (int type
)
7322 return Z_PACKET_WRITE_WP
;
7325 return Z_PACKET_READ_WP
;
7328 return Z_PACKET_ACCESS_WP
;
7331 internal_error (__FILE__
, __LINE__
,
7332 _("hw_bp_to_z: bad watchpoint type %d"), type
);
7337 remote_insert_watchpoint (CORE_ADDR addr
, int len
, int type
)
7339 struct remote_state
*rs
= get_remote_state ();
7341 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
7343 if (remote_protocol_packets
[PACKET_Z0
+ packet
].support
== PACKET_DISABLE
)
7346 sprintf (rs
->buf
, "Z%x,", packet
);
7347 p
= strchr (rs
->buf
, '\0');
7348 addr
= remote_address_masked (addr
);
7349 p
+= hexnumstr (p
, (ULONGEST
) addr
);
7350 sprintf (p
, ",%x", len
);
7353 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7355 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
+ packet
]))
7359 case PACKET_UNKNOWN
:
7364 internal_error (__FILE__
, __LINE__
,
7365 _("remote_insert_watchpoint: reached end of function"));
7370 remote_remove_watchpoint (CORE_ADDR addr
, int len
, int type
)
7372 struct remote_state
*rs
= get_remote_state ();
7374 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
7376 if (remote_protocol_packets
[PACKET_Z0
+ packet
].support
== PACKET_DISABLE
)
7379 sprintf (rs
->buf
, "z%x,", packet
);
7380 p
= strchr (rs
->buf
, '\0');
7381 addr
= remote_address_masked (addr
);
7382 p
+= hexnumstr (p
, (ULONGEST
) addr
);
7383 sprintf (p
, ",%x", len
);
7385 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7387 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
+ packet
]))
7390 case PACKET_UNKNOWN
:
7395 internal_error (__FILE__
, __LINE__
,
7396 _("remote_remove_watchpoint: reached end of function"));
7400 int remote_hw_watchpoint_limit
= -1;
7401 int remote_hw_breakpoint_limit
= -1;
7404 remote_check_watch_resources (int type
, int cnt
, int ot
)
7406 if (type
== bp_hardware_breakpoint
)
7408 if (remote_hw_breakpoint_limit
== 0)
7410 else if (remote_hw_breakpoint_limit
< 0)
7412 else if (cnt
<= remote_hw_breakpoint_limit
)
7417 if (remote_hw_watchpoint_limit
== 0)
7419 else if (remote_hw_watchpoint_limit
< 0)
7423 else if (cnt
<= remote_hw_watchpoint_limit
)
7430 remote_stopped_by_watchpoint (void)
7432 return remote_stopped_by_watchpoint_p
;
7436 remote_stopped_data_address (struct target_ops
*target
, CORE_ADDR
*addr_p
)
7439 if (remote_stopped_by_watchpoint ())
7441 *addr_p
= remote_watch_data_address
;
7450 remote_insert_hw_breakpoint (struct gdbarch
*gdbarch
,
7451 struct bp_target_info
*bp_tgt
)
7454 struct remote_state
*rs
;
7457 /* The length field should be set to the size of a breakpoint
7458 instruction, even though we aren't inserting one ourselves. */
7460 gdbarch_remote_breakpoint_from_pc
7461 (gdbarch
, &bp_tgt
->placed_address
, &bp_tgt
->placed_size
);
7463 if (remote_protocol_packets
[PACKET_Z1
].support
== PACKET_DISABLE
)
7466 rs
= get_remote_state ();
7473 addr
= remote_address_masked (bp_tgt
->placed_address
);
7474 p
+= hexnumstr (p
, (ULONGEST
) addr
);
7475 sprintf (p
, ",%x", bp_tgt
->placed_size
);
7478 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7480 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z1
]))
7483 case PACKET_UNKNOWN
:
7488 internal_error (__FILE__
, __LINE__
,
7489 _("remote_insert_hw_breakpoint: reached end of function"));
7494 remote_remove_hw_breakpoint (struct gdbarch
*gdbarch
,
7495 struct bp_target_info
*bp_tgt
)
7498 struct remote_state
*rs
= get_remote_state ();
7501 if (remote_protocol_packets
[PACKET_Z1
].support
== PACKET_DISABLE
)
7508 addr
= remote_address_masked (bp_tgt
->placed_address
);
7509 p
+= hexnumstr (p
, (ULONGEST
) addr
);
7510 sprintf (p
, ",%x", bp_tgt
->placed_size
);
7513 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7515 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z1
]))
7518 case PACKET_UNKNOWN
:
7523 internal_error (__FILE__
, __LINE__
,
7524 _("remote_remove_hw_breakpoint: reached end of function"));
7527 /* Table used by the crc32 function to calcuate the checksum. */
7529 static unsigned long crc32_table
[256] =
7532 static unsigned long
7533 crc32 (unsigned char *buf
, int len
, unsigned int crc
)
7535 if (!crc32_table
[1])
7537 /* Initialize the CRC table and the decoding table. */
7541 for (i
= 0; i
< 256; i
++)
7543 for (c
= i
<< 24, j
= 8; j
> 0; --j
)
7544 c
= c
& 0x80000000 ? (c
<< 1) ^ 0x04c11db7 : (c
<< 1);
7551 crc
= (crc
<< 8) ^ crc32_table
[((crc
>> 24) ^ *buf
) & 255];
7557 /* compare-sections command
7559 With no arguments, compares each loadable section in the exec bfd
7560 with the same memory range on the target, and reports mismatches.
7561 Useful for verifying the image on the target against the exec file.
7562 Depends on the target understanding the new "qCRC:" request. */
7564 /* FIXME: cagney/1999-10-26: This command should be broken down into a
7565 target method (target verify memory) and generic version of the
7566 actual command. This will allow other high-level code (especially
7567 generic_load()) to make use of this target functionality. */
7570 compare_sections_command (char *args
, int from_tty
)
7572 struct remote_state
*rs
= get_remote_state ();
7574 unsigned long host_crc
, target_crc
;
7575 struct cleanup
*old_chain
;
7578 const char *sectname
;
7585 error (_("command cannot be used without an exec file"));
7586 if (!current_target
.to_shortname
||
7587 strcmp (current_target
.to_shortname
, "remote") != 0)
7588 error (_("command can only be used with remote target"));
7590 for (s
= exec_bfd
->sections
; s
; s
= s
->next
)
7592 if (!(s
->flags
& SEC_LOAD
))
7593 continue; /* skip non-loadable section */
7595 size
= bfd_get_section_size (s
);
7597 continue; /* skip zero-length section */
7599 sectname
= bfd_get_section_name (exec_bfd
, s
);
7600 if (args
&& strcmp (args
, sectname
) != 0)
7601 continue; /* not the section selected by user */
7603 matched
= 1; /* do this section */
7605 /* FIXME: assumes lma can fit into long. */
7606 xsnprintf (rs
->buf
, get_remote_packet_size (), "qCRC:%lx,%lx",
7607 (long) lma
, (long) size
);
7610 /* Be clever; compute the host_crc before waiting for target
7612 sectdata
= xmalloc (size
);
7613 old_chain
= make_cleanup (xfree
, sectdata
);
7614 bfd_get_section_contents (exec_bfd
, s
, sectdata
, 0, size
);
7615 host_crc
= crc32 ((unsigned char *) sectdata
, size
, 0xffffffff);
7617 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7618 if (rs
->buf
[0] == 'E')
7619 error (_("target memory fault, section %s, range %s -- %s"), sectname
,
7620 paddress (target_gdbarch
, lma
),
7621 paddress (target_gdbarch
, lma
+ size
));
7622 if (rs
->buf
[0] != 'C')
7623 error (_("remote target does not support this operation"));
7625 for (target_crc
= 0, tmp
= &rs
->buf
[1]; *tmp
; tmp
++)
7626 target_crc
= target_crc
* 16 + fromhex (*tmp
);
7628 printf_filtered ("Section %s, range %s -- %s: ", sectname
,
7629 paddress (target_gdbarch
, lma
),
7630 paddress (target_gdbarch
, lma
+ size
));
7631 if (host_crc
== target_crc
)
7632 printf_filtered ("matched.\n");
7635 printf_filtered ("MIS-MATCHED!\n");
7639 do_cleanups (old_chain
);
7642 warning (_("One or more sections of the remote executable does not match\n\
7643 the loaded file\n"));
7644 if (args
&& !matched
)
7645 printf_filtered (_("No loaded section named '%s'.\n"), args
);
7648 /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET
7649 into remote target. The number of bytes written to the remote
7650 target is returned, or -1 for error. */
7653 remote_write_qxfer (struct target_ops
*ops
, const char *object_name
,
7654 const char *annex
, const gdb_byte
*writebuf
,
7655 ULONGEST offset
, LONGEST len
,
7656 struct packet_config
*packet
)
7660 struct remote_state
*rs
= get_remote_state ();
7661 int max_size
= get_memory_write_packet_size ();
7663 if (packet
->support
== PACKET_DISABLE
)
7666 /* Insert header. */
7667 i
= snprintf (rs
->buf
, max_size
,
7668 "qXfer:%s:write:%s:%s:",
7669 object_name
, annex
? annex
: "",
7670 phex_nz (offset
, sizeof offset
));
7671 max_size
-= (i
+ 1);
7673 /* Escape as much data as fits into rs->buf. */
7674 buf_len
= remote_escape_output
7675 (writebuf
, len
, (rs
->buf
+ i
), &max_size
, max_size
);
7677 if (putpkt_binary (rs
->buf
, i
+ buf_len
) < 0
7678 || getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) < 0
7679 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
7682 unpack_varlen_hex (rs
->buf
, &n
);
7686 /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet.
7687 Data at OFFSET, of up to LEN bytes, is read into READBUF; the
7688 number of bytes read is returned, or 0 for EOF, or -1 for error.
7689 The number of bytes read may be less than LEN without indicating an
7690 EOF. PACKET is checked and updated to indicate whether the remote
7691 target supports this object. */
7694 remote_read_qxfer (struct target_ops
*ops
, const char *object_name
,
7696 gdb_byte
*readbuf
, ULONGEST offset
, LONGEST len
,
7697 struct packet_config
*packet
)
7699 static char *finished_object
;
7700 static char *finished_annex
;
7701 static ULONGEST finished_offset
;
7703 struct remote_state
*rs
= get_remote_state ();
7704 LONGEST i
, n
, packet_len
;
7706 if (packet
->support
== PACKET_DISABLE
)
7709 /* Check whether we've cached an end-of-object packet that matches
7711 if (finished_object
)
7713 if (strcmp (object_name
, finished_object
) == 0
7714 && strcmp (annex
? annex
: "", finished_annex
) == 0
7715 && offset
== finished_offset
)
7718 /* Otherwise, we're now reading something different. Discard
7720 xfree (finished_object
);
7721 xfree (finished_annex
);
7722 finished_object
= NULL
;
7723 finished_annex
= NULL
;
7726 /* Request only enough to fit in a single packet. The actual data
7727 may not, since we don't know how much of it will need to be escaped;
7728 the target is free to respond with slightly less data. We subtract
7729 five to account for the response type and the protocol frame. */
7730 n
= min (get_remote_packet_size () - 5, len
);
7731 snprintf (rs
->buf
, get_remote_packet_size () - 4, "qXfer:%s:read:%s:%s,%s",
7732 object_name
, annex
? annex
: "",
7733 phex_nz (offset
, sizeof offset
),
7734 phex_nz (n
, sizeof n
));
7735 i
= putpkt (rs
->buf
);
7740 packet_len
= getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0);
7741 if (packet_len
< 0 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
7744 if (rs
->buf
[0] != 'l' && rs
->buf
[0] != 'm')
7745 error (_("Unknown remote qXfer reply: %s"), rs
->buf
);
7747 /* 'm' means there is (or at least might be) more data after this
7748 batch. That does not make sense unless there's at least one byte
7749 of data in this reply. */
7750 if (rs
->buf
[0] == 'm' && packet_len
== 1)
7751 error (_("Remote qXfer reply contained no data."));
7753 /* Got some data. */
7754 i
= remote_unescape_input (rs
->buf
+ 1, packet_len
- 1, readbuf
, n
);
7756 /* 'l' is an EOF marker, possibly including a final block of data,
7757 or possibly empty. If we have the final block of a non-empty
7758 object, record this fact to bypass a subsequent partial read. */
7759 if (rs
->buf
[0] == 'l' && offset
+ i
> 0)
7761 finished_object
= xstrdup (object_name
);
7762 finished_annex
= xstrdup (annex
? annex
: "");
7763 finished_offset
= offset
+ i
;
7770 remote_xfer_partial (struct target_ops
*ops
, enum target_object object
,
7771 const char *annex
, gdb_byte
*readbuf
,
7772 const gdb_byte
*writebuf
, ULONGEST offset
, LONGEST len
)
7774 struct remote_state
*rs
;
7779 set_general_thread (inferior_ptid
);
7781 rs
= get_remote_state ();
7783 /* Handle memory using the standard memory routines. */
7784 if (object
== TARGET_OBJECT_MEMORY
)
7789 /* If the remote target is connected but not running, we should
7790 pass this request down to a lower stratum (e.g. the executable
7792 if (!target_has_execution
)
7795 if (writebuf
!= NULL
)
7796 xfered
= remote_write_bytes (offset
, writebuf
, len
);
7798 xfered
= remote_read_bytes (offset
, readbuf
, len
);
7802 else if (xfered
== 0 && errno
== 0)
7808 /* Handle SPU memory using qxfer packets. */
7809 if (object
== TARGET_OBJECT_SPU
)
7812 return remote_read_qxfer (ops
, "spu", annex
, readbuf
, offset
, len
,
7813 &remote_protocol_packets
7814 [PACKET_qXfer_spu_read
]);
7816 return remote_write_qxfer (ops
, "spu", annex
, writebuf
, offset
, len
,
7817 &remote_protocol_packets
7818 [PACKET_qXfer_spu_write
]);
7821 /* Handle extra signal info using qxfer packets. */
7822 if (object
== TARGET_OBJECT_SIGNAL_INFO
)
7825 return remote_read_qxfer (ops
, "siginfo", annex
, readbuf
, offset
, len
,
7826 &remote_protocol_packets
7827 [PACKET_qXfer_siginfo_read
]);
7829 return remote_write_qxfer (ops
, "siginfo", annex
, writebuf
, offset
, len
,
7830 &remote_protocol_packets
7831 [PACKET_qXfer_siginfo_write
]);
7834 /* Only handle flash writes. */
7835 if (writebuf
!= NULL
)
7841 case TARGET_OBJECT_FLASH
:
7842 xfered
= remote_flash_write (ops
, offset
, len
, writebuf
);
7846 else if (xfered
== 0 && errno
== 0)
7856 /* Map pre-existing objects onto letters. DO NOT do this for new
7857 objects!!! Instead specify new query packets. */
7860 case TARGET_OBJECT_AVR
:
7864 case TARGET_OBJECT_AUXV
:
7865 gdb_assert (annex
== NULL
);
7866 return remote_read_qxfer (ops
, "auxv", annex
, readbuf
, offset
, len
,
7867 &remote_protocol_packets
[PACKET_qXfer_auxv
]);
7869 case TARGET_OBJECT_AVAILABLE_FEATURES
:
7870 return remote_read_qxfer
7871 (ops
, "features", annex
, readbuf
, offset
, len
,
7872 &remote_protocol_packets
[PACKET_qXfer_features
]);
7874 case TARGET_OBJECT_LIBRARIES
:
7875 return remote_read_qxfer
7876 (ops
, "libraries", annex
, readbuf
, offset
, len
,
7877 &remote_protocol_packets
[PACKET_qXfer_libraries
]);
7879 case TARGET_OBJECT_MEMORY_MAP
:
7880 gdb_assert (annex
== NULL
);
7881 return remote_read_qxfer (ops
, "memory-map", annex
, readbuf
, offset
, len
,
7882 &remote_protocol_packets
[PACKET_qXfer_memory_map
]);
7884 case TARGET_OBJECT_OSDATA
:
7885 /* Should only get here if we're connected. */
7886 gdb_assert (remote_desc
);
7887 return remote_read_qxfer
7888 (ops
, "osdata", annex
, readbuf
, offset
, len
,
7889 &remote_protocol_packets
[PACKET_qXfer_osdata
]);
7891 case TARGET_OBJECT_THREADS
:
7892 gdb_assert (annex
== NULL
);
7893 return remote_read_qxfer (ops
, "threads", annex
, readbuf
, offset
, len
,
7894 &remote_protocol_packets
[PACKET_qXfer_threads
]);
7900 /* Note: a zero OFFSET and LEN can be used to query the minimum
7902 if (offset
== 0 && len
== 0)
7903 return (get_remote_packet_size ());
7904 /* Minimum outbuf size is get_remote_packet_size (). If LEN is not
7905 large enough let the caller deal with it. */
7906 if (len
< get_remote_packet_size ())
7908 len
= get_remote_packet_size ();
7910 /* Except for querying the minimum buffer size, target must be open. */
7912 error (_("remote query is only available after target open"));
7914 gdb_assert (annex
!= NULL
);
7915 gdb_assert (readbuf
!= NULL
);
7921 /* We used one buffer char for the remote protocol q command and
7922 another for the query type. As the remote protocol encapsulation
7923 uses 4 chars plus one extra in case we are debugging
7924 (remote_debug), we have PBUFZIZ - 7 left to pack the query
7927 while (annex
[i
] && (i
< (get_remote_packet_size () - 8)))
7929 /* Bad caller may have sent forbidden characters. */
7930 gdb_assert (isprint (annex
[i
]) && annex
[i
] != '$' && annex
[i
] != '#');
7935 gdb_assert (annex
[i
] == '\0');
7937 i
= putpkt (rs
->buf
);
7941 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7942 strcpy ((char *) readbuf
, rs
->buf
);
7944 return strlen ((char *) readbuf
);
7948 remote_search_memory (struct target_ops
* ops
,
7949 CORE_ADDR start_addr
, ULONGEST search_space_len
,
7950 const gdb_byte
*pattern
, ULONGEST pattern_len
,
7951 CORE_ADDR
*found_addrp
)
7953 int addr_size
= gdbarch_addr_bit (target_gdbarch
) / 8;
7954 struct remote_state
*rs
= get_remote_state ();
7955 int max_size
= get_memory_write_packet_size ();
7956 struct packet_config
*packet
=
7957 &remote_protocol_packets
[PACKET_qSearch_memory
];
7958 /* number of packet bytes used to encode the pattern,
7959 this could be more than PATTERN_LEN due to escape characters */
7960 int escaped_pattern_len
;
7961 /* amount of pattern that was encodable in the packet */
7962 int used_pattern_len
;
7965 ULONGEST found_addr
;
7967 /* Don't go to the target if we don't have to.
7968 This is done before checking packet->support to avoid the possibility that
7969 a success for this edge case means the facility works in general. */
7970 if (pattern_len
> search_space_len
)
7972 if (pattern_len
== 0)
7974 *found_addrp
= start_addr
;
7978 /* If we already know the packet isn't supported, fall back to the simple
7979 way of searching memory. */
7981 if (packet
->support
== PACKET_DISABLE
)
7983 /* Target doesn't provided special support, fall back and use the
7984 standard support (copy memory and do the search here). */
7985 return simple_search_memory (ops
, start_addr
, search_space_len
,
7986 pattern
, pattern_len
, found_addrp
);
7989 /* Insert header. */
7990 i
= snprintf (rs
->buf
, max_size
,
7991 "qSearch:memory:%s;%s;",
7992 phex_nz (start_addr
, addr_size
),
7993 phex_nz (search_space_len
, sizeof (search_space_len
)));
7994 max_size
-= (i
+ 1);
7996 /* Escape as much data as fits into rs->buf. */
7997 escaped_pattern_len
=
7998 remote_escape_output (pattern
, pattern_len
, (rs
->buf
+ i
),
7999 &used_pattern_len
, max_size
);
8001 /* Bail if the pattern is too large. */
8002 if (used_pattern_len
!= pattern_len
)
8003 error ("Pattern is too large to transmit to remote target.");
8005 if (putpkt_binary (rs
->buf
, i
+ escaped_pattern_len
) < 0
8006 || getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) < 0
8007 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
8009 /* The request may not have worked because the command is not
8010 supported. If so, fall back to the simple way. */
8011 if (packet
->support
== PACKET_DISABLE
)
8013 return simple_search_memory (ops
, start_addr
, search_space_len
,
8014 pattern
, pattern_len
, found_addrp
);
8019 if (rs
->buf
[0] == '0')
8021 else if (rs
->buf
[0] == '1')
8024 if (rs
->buf
[1] != ',')
8025 error (_("Unknown qSearch:memory reply: %s"), rs
->buf
);
8026 unpack_varlen_hex (rs
->buf
+ 2, &found_addr
);
8027 *found_addrp
= found_addr
;
8030 error (_("Unknown qSearch:memory reply: %s"), rs
->buf
);
8036 remote_rcmd (char *command
,
8037 struct ui_file
*outbuf
)
8039 struct remote_state
*rs
= get_remote_state ();
8043 error (_("remote rcmd is only available after target open"));
8045 /* Send a NULL command across as an empty command. */
8046 if (command
== NULL
)
8049 /* The query prefix. */
8050 strcpy (rs
->buf
, "qRcmd,");
8051 p
= strchr (rs
->buf
, '\0');
8053 if ((strlen (rs
->buf
) + strlen (command
) * 2 + 8/*misc*/) > get_remote_packet_size ())
8054 error (_("\"monitor\" command ``%s'' is too long."), command
);
8056 /* Encode the actual command. */
8057 bin2hex ((gdb_byte
*) command
, p
, 0);
8059 if (putpkt (rs
->buf
) < 0)
8060 error (_("Communication problem with target."));
8062 /* get/display the response */
8067 /* XXX - see also remote_get_noisy_reply(). */
8069 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8072 error (_("Target does not support this command."));
8073 if (buf
[0] == 'O' && buf
[1] != 'K')
8075 remote_console_output (buf
+ 1); /* 'O' message from stub. */
8078 if (strcmp (buf
, "OK") == 0)
8080 if (strlen (buf
) == 3 && buf
[0] == 'E'
8081 && isdigit (buf
[1]) && isdigit (buf
[2]))
8083 error (_("Protocol error with Rcmd"));
8085 for (p
= buf
; p
[0] != '\0' && p
[1] != '\0'; p
+= 2)
8087 char c
= (fromhex (p
[0]) << 4) + fromhex (p
[1]);
8088 fputc_unfiltered (c
, outbuf
);
8094 static VEC(mem_region_s
) *
8095 remote_memory_map (struct target_ops
*ops
)
8097 VEC(mem_region_s
) *result
= NULL
;
8098 char *text
= target_read_stralloc (¤t_target
,
8099 TARGET_OBJECT_MEMORY_MAP
, NULL
);
8103 struct cleanup
*back_to
= make_cleanup (xfree
, text
);
8104 result
= parse_memory_map (text
);
8105 do_cleanups (back_to
);
8112 packet_command (char *args
, int from_tty
)
8114 struct remote_state
*rs
= get_remote_state ();
8117 error (_("command can only be used with remote target"));
8120 error (_("remote-packet command requires packet text as argument"));
8122 puts_filtered ("sending: ");
8123 print_packet (args
);
8124 puts_filtered ("\n");
8127 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8128 puts_filtered ("received: ");
8129 print_packet (rs
->buf
);
8130 puts_filtered ("\n");
8134 /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */
8136 static void display_thread_info (struct gdb_ext_thread_info
*info
);
8138 static void threadset_test_cmd (char *cmd
, int tty
);
8140 static void threadalive_test (char *cmd
, int tty
);
8142 static void threadlist_test_cmd (char *cmd
, int tty
);
8144 int get_and_display_threadinfo (threadref
*ref
);
8146 static void threadinfo_test_cmd (char *cmd
, int tty
);
8148 static int thread_display_step (threadref
*ref
, void *context
);
8150 static void threadlist_update_test_cmd (char *cmd
, int tty
);
8152 static void init_remote_threadtests (void);
8154 #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */
8157 threadset_test_cmd (char *cmd
, int tty
)
8159 int sample_thread
= SAMPLE_THREAD
;
8161 printf_filtered (_("Remote threadset test\n"));
8162 set_general_thread (sample_thread
);
8167 threadalive_test (char *cmd
, int tty
)
8169 int sample_thread
= SAMPLE_THREAD
;
8170 int pid
= ptid_get_pid (inferior_ptid
);
8171 ptid_t ptid
= ptid_build (pid
, 0, sample_thread
);
8173 if (remote_thread_alive (ptid
))
8174 printf_filtered ("PASS: Thread alive test\n");
8176 printf_filtered ("FAIL: Thread alive test\n");
8179 void output_threadid (char *title
, threadref
*ref
);
8182 output_threadid (char *title
, threadref
*ref
)
8186 pack_threadid (&hexid
[0], ref
); /* Convert threead id into hex. */
8188 printf_filtered ("%s %s\n", title
, (&hexid
[0]));
8192 threadlist_test_cmd (char *cmd
, int tty
)
8195 threadref nextthread
;
8196 int done
, result_count
;
8197 threadref threadlist
[3];
8199 printf_filtered ("Remote Threadlist test\n");
8200 if (!remote_get_threadlist (startflag
, &nextthread
, 3, &done
,
8201 &result_count
, &threadlist
[0]))
8202 printf_filtered ("FAIL: threadlist test\n");
8205 threadref
*scan
= threadlist
;
8206 threadref
*limit
= scan
+ result_count
;
8208 while (scan
< limit
)
8209 output_threadid (" thread ", scan
++);
8214 display_thread_info (struct gdb_ext_thread_info
*info
)
8216 output_threadid ("Threadid: ", &info
->threadid
);
8217 printf_filtered ("Name: %s\n ", info
->shortname
);
8218 printf_filtered ("State: %s\n", info
->display
);
8219 printf_filtered ("other: %s\n\n", info
->more_display
);
8223 get_and_display_threadinfo (threadref
*ref
)
8227 struct gdb_ext_thread_info threadinfo
;
8229 set
= TAG_THREADID
| TAG_EXISTS
| TAG_THREADNAME
8230 | TAG_MOREDISPLAY
| TAG_DISPLAY
;
8231 if (0 != (result
= remote_get_threadinfo (ref
, set
, &threadinfo
)))
8232 display_thread_info (&threadinfo
);
8237 threadinfo_test_cmd (char *cmd
, int tty
)
8239 int athread
= SAMPLE_THREAD
;
8243 int_to_threadref (&thread
, athread
);
8244 printf_filtered ("Remote Threadinfo test\n");
8245 if (!get_and_display_threadinfo (&thread
))
8246 printf_filtered ("FAIL cannot get thread info\n");
8250 thread_display_step (threadref
*ref
, void *context
)
8252 /* output_threadid(" threadstep ",ref); *//* simple test */
8253 return get_and_display_threadinfo (ref
);
8257 threadlist_update_test_cmd (char *cmd
, int tty
)
8259 printf_filtered ("Remote Threadlist update test\n");
8260 remote_threadlist_iterator (thread_display_step
, 0, CRAZY_MAX_THREADS
);
8264 init_remote_threadtests (void)
8266 add_com ("tlist", class_obscure
, threadlist_test_cmd
, _("\
8267 Fetch and print the remote list of thread identifiers, one pkt only"));
8268 add_com ("tinfo", class_obscure
, threadinfo_test_cmd
,
8269 _("Fetch and display info about one thread"));
8270 add_com ("tset", class_obscure
, threadset_test_cmd
,
8271 _("Test setting to a different thread"));
8272 add_com ("tupd", class_obscure
, threadlist_update_test_cmd
,
8273 _("Iterate through updating all remote thread info"));
8274 add_com ("talive", class_obscure
, threadalive_test
,
8275 _(" Remote thread alive test "));
8280 /* Convert a thread ID to a string. Returns the string in a static
8284 remote_pid_to_str (struct target_ops
*ops
, ptid_t ptid
)
8286 static char buf
[64];
8287 struct remote_state
*rs
= get_remote_state ();
8289 if (ptid_is_pid (ptid
))
8291 /* Printing an inferior target id. */
8293 /* When multi-process extensions are off, there's no way in the
8294 remote protocol to know the remote process id, if there's any
8295 at all. There's one exception --- when we're connected with
8296 target extended-remote, and we manually attached to a process
8297 with "attach PID". We don't record anywhere a flag that
8298 allows us to distinguish that case from the case of
8299 connecting with extended-remote and the stub already being
8300 attached to a process, and reporting yes to qAttached, hence
8301 no smart special casing here. */
8302 if (!remote_multi_process_p (rs
))
8304 xsnprintf (buf
, sizeof buf
, "Remote target");
8308 return normal_pid_to_str (ptid
);
8312 if (ptid_equal (magic_null_ptid
, ptid
))
8313 xsnprintf (buf
, sizeof buf
, "Thread <main>");
8314 else if (remote_multi_process_p (rs
))
8315 xsnprintf (buf
, sizeof buf
, "Thread %d.%ld",
8316 ptid_get_pid (ptid
), ptid_get_tid (ptid
));
8318 xsnprintf (buf
, sizeof buf
, "Thread %ld",
8319 ptid_get_tid (ptid
));
8324 /* Get the address of the thread local variable in OBJFILE which is
8325 stored at OFFSET within the thread local storage for thread PTID. */
8328 remote_get_thread_local_address (struct target_ops
*ops
,
8329 ptid_t ptid
, CORE_ADDR lm
, CORE_ADDR offset
)
8331 if (remote_protocol_packets
[PACKET_qGetTLSAddr
].support
!= PACKET_DISABLE
)
8333 struct remote_state
*rs
= get_remote_state ();
8335 char *endp
= rs
->buf
+ get_remote_packet_size ();
8336 enum packet_result result
;
8338 strcpy (p
, "qGetTLSAddr:");
8340 p
= write_ptid (p
, endp
, ptid
);
8342 p
+= hexnumstr (p
, offset
);
8344 p
+= hexnumstr (p
, lm
);
8348 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8349 result
= packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_qGetTLSAddr
]);
8350 if (result
== PACKET_OK
)
8354 unpack_varlen_hex (rs
->buf
, &result
);
8357 else if (result
== PACKET_UNKNOWN
)
8358 throw_error (TLS_GENERIC_ERROR
,
8359 _("Remote target doesn't support qGetTLSAddr packet"));
8361 throw_error (TLS_GENERIC_ERROR
,
8362 _("Remote target failed to process qGetTLSAddr request"));
8365 throw_error (TLS_GENERIC_ERROR
,
8366 _("TLS not supported or disabled on this target"));
8371 /* Support for inferring a target description based on the current
8372 architecture and the size of a 'g' packet. While the 'g' packet
8373 can have any size (since optional registers can be left off the
8374 end), some sizes are easily recognizable given knowledge of the
8375 approximate architecture. */
8377 struct remote_g_packet_guess
8380 const struct target_desc
*tdesc
;
8382 typedef struct remote_g_packet_guess remote_g_packet_guess_s
;
8383 DEF_VEC_O(remote_g_packet_guess_s
);
8385 struct remote_g_packet_data
8387 VEC(remote_g_packet_guess_s
) *guesses
;
8390 static struct gdbarch_data
*remote_g_packet_data_handle
;
8393 remote_g_packet_data_init (struct obstack
*obstack
)
8395 return OBSTACK_ZALLOC (obstack
, struct remote_g_packet_data
);
8399 register_remote_g_packet_guess (struct gdbarch
*gdbarch
, int bytes
,
8400 const struct target_desc
*tdesc
)
8402 struct remote_g_packet_data
*data
8403 = gdbarch_data (gdbarch
, remote_g_packet_data_handle
);
8404 struct remote_g_packet_guess new_guess
, *guess
;
8407 gdb_assert (tdesc
!= NULL
);
8410 VEC_iterate (remote_g_packet_guess_s
, data
->guesses
, ix
, guess
);
8412 if (guess
->bytes
== bytes
)
8413 internal_error (__FILE__
, __LINE__
,
8414 "Duplicate g packet description added for size %d",
8417 new_guess
.bytes
= bytes
;
8418 new_guess
.tdesc
= tdesc
;
8419 VEC_safe_push (remote_g_packet_guess_s
, data
->guesses
, &new_guess
);
8422 /* Return 1 if remote_read_description would do anything on this target
8423 and architecture, 0 otherwise. */
8426 remote_read_description_p (struct target_ops
*target
)
8428 struct remote_g_packet_data
*data
8429 = gdbarch_data (target_gdbarch
, remote_g_packet_data_handle
);
8431 if (!VEC_empty (remote_g_packet_guess_s
, data
->guesses
))
8437 static const struct target_desc
*
8438 remote_read_description (struct target_ops
*target
)
8440 struct remote_g_packet_data
*data
8441 = gdbarch_data (target_gdbarch
, remote_g_packet_data_handle
);
8443 /* Do not try this during initial connection, when we do not know
8444 whether there is a running but stopped thread. */
8445 if (!target_has_execution
|| ptid_equal (inferior_ptid
, null_ptid
))
8448 if (!VEC_empty (remote_g_packet_guess_s
, data
->guesses
))
8450 struct remote_g_packet_guess
*guess
;
8452 int bytes
= send_g_packet ();
8455 VEC_iterate (remote_g_packet_guess_s
, data
->guesses
, ix
, guess
);
8457 if (guess
->bytes
== bytes
)
8458 return guess
->tdesc
;
8460 /* We discard the g packet. A minor optimization would be to
8461 hold on to it, and fill the register cache once we have selected
8462 an architecture, but it's too tricky to do safely. */
8468 /* Remote file transfer support. This is host-initiated I/O, not
8469 target-initiated; for target-initiated, see remote-fileio.c. */
8471 /* If *LEFT is at least the length of STRING, copy STRING to
8472 *BUFFER, update *BUFFER to point to the new end of the buffer, and
8473 decrease *LEFT. Otherwise raise an error. */
8476 remote_buffer_add_string (char **buffer
, int *left
, char *string
)
8478 int len
= strlen (string
);
8481 error (_("Packet too long for target."));
8483 memcpy (*buffer
, string
, len
);
8487 /* NUL-terminate the buffer as a convenience, if there is
8493 /* If *LEFT is large enough, hex encode LEN bytes from BYTES into
8494 *BUFFER, update *BUFFER to point to the new end of the buffer, and
8495 decrease *LEFT. Otherwise raise an error. */
8498 remote_buffer_add_bytes (char **buffer
, int *left
, const gdb_byte
*bytes
,
8501 if (2 * len
> *left
)
8502 error (_("Packet too long for target."));
8504 bin2hex (bytes
, *buffer
, len
);
8508 /* NUL-terminate the buffer as a convenience, if there is
8514 /* If *LEFT is large enough, convert VALUE to hex and add it to
8515 *BUFFER, update *BUFFER to point to the new end of the buffer, and
8516 decrease *LEFT. Otherwise raise an error. */
8519 remote_buffer_add_int (char **buffer
, int *left
, ULONGEST value
)
8521 int len
= hexnumlen (value
);
8524 error (_("Packet too long for target."));
8526 hexnumstr (*buffer
, value
);
8530 /* NUL-terminate the buffer as a convenience, if there is
8536 /* Parse an I/O result packet from BUFFER. Set RETCODE to the return
8537 value, *REMOTE_ERRNO to the remote error number or zero if none
8538 was included, and *ATTACHMENT to point to the start of the annex
8539 if any. The length of the packet isn't needed here; there may
8540 be NUL bytes in BUFFER, but they will be after *ATTACHMENT.
8542 Return 0 if the packet could be parsed, -1 if it could not. If
8543 -1 is returned, the other variables may not be initialized. */
8546 remote_hostio_parse_result (char *buffer
, int *retcode
,
8547 int *remote_errno
, char **attachment
)
8554 if (buffer
[0] != 'F')
8558 *retcode
= strtol (&buffer
[1], &p
, 16);
8559 if (errno
!= 0 || p
== &buffer
[1])
8562 /* Check for ",errno". */
8566 *remote_errno
= strtol (p
+ 1, &p2
, 16);
8567 if (errno
!= 0 || p
+ 1 == p2
)
8572 /* Check for ";attachment". If there is no attachment, the
8573 packet should end here. */
8576 *attachment
= p
+ 1;
8579 else if (*p
== '\0')
8585 /* Send a prepared I/O packet to the target and read its response.
8586 The prepared packet is in the global RS->BUF before this function
8587 is called, and the answer is there when we return.
8589 COMMAND_BYTES is the length of the request to send, which may include
8590 binary data. WHICH_PACKET is the packet configuration to check
8591 before attempting a packet. If an error occurs, *REMOTE_ERRNO
8592 is set to the error number and -1 is returned. Otherwise the value
8593 returned by the function is returned.
8595 ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an
8596 attachment is expected; an error will be reported if there's a
8597 mismatch. If one is found, *ATTACHMENT will be set to point into
8598 the packet buffer and *ATTACHMENT_LEN will be set to the
8599 attachment's length. */
8602 remote_hostio_send_command (int command_bytes
, int which_packet
,
8603 int *remote_errno
, char **attachment
,
8604 int *attachment_len
)
8606 struct remote_state
*rs
= get_remote_state ();
8607 int ret
, bytes_read
;
8608 char *attachment_tmp
;
8611 || remote_protocol_packets
[which_packet
].support
== PACKET_DISABLE
)
8613 *remote_errno
= FILEIO_ENOSYS
;
8617 putpkt_binary (rs
->buf
, command_bytes
);
8618 bytes_read
= getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0);
8620 /* If it timed out, something is wrong. Don't try to parse the
8624 *remote_errno
= FILEIO_EINVAL
;
8628 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[which_packet
]))
8631 *remote_errno
= FILEIO_EINVAL
;
8633 case PACKET_UNKNOWN
:
8634 *remote_errno
= FILEIO_ENOSYS
;
8640 if (remote_hostio_parse_result (rs
->buf
, &ret
, remote_errno
,
8643 *remote_errno
= FILEIO_EINVAL
;
8647 /* Make sure we saw an attachment if and only if we expected one. */
8648 if ((attachment_tmp
== NULL
&& attachment
!= NULL
)
8649 || (attachment_tmp
!= NULL
&& attachment
== NULL
))
8651 *remote_errno
= FILEIO_EINVAL
;
8655 /* If an attachment was found, it must point into the packet buffer;
8656 work out how many bytes there were. */
8657 if (attachment_tmp
!= NULL
)
8659 *attachment
= attachment_tmp
;
8660 *attachment_len
= bytes_read
- (*attachment
- rs
->buf
);
8666 /* Open FILENAME on the remote target, using FLAGS and MODE. Return a
8667 remote file descriptor, or -1 if an error occurs (and set
8671 remote_hostio_open (const char *filename
, int flags
, int mode
,
8674 struct remote_state
*rs
= get_remote_state ();
8676 int left
= get_remote_packet_size () - 1;
8678 remote_buffer_add_string (&p
, &left
, "vFile:open:");
8680 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
8682 remote_buffer_add_string (&p
, &left
, ",");
8684 remote_buffer_add_int (&p
, &left
, flags
);
8685 remote_buffer_add_string (&p
, &left
, ",");
8687 remote_buffer_add_int (&p
, &left
, mode
);
8689 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_open
,
8690 remote_errno
, NULL
, NULL
);
8693 /* Write up to LEN bytes from WRITE_BUF to FD on the remote target.
8694 Return the number of bytes written, or -1 if an error occurs (and
8695 set *REMOTE_ERRNO). */
8698 remote_hostio_pwrite (int fd
, const gdb_byte
*write_buf
, int len
,
8699 ULONGEST offset
, int *remote_errno
)
8701 struct remote_state
*rs
= get_remote_state ();
8703 int left
= get_remote_packet_size ();
8706 remote_buffer_add_string (&p
, &left
, "vFile:pwrite:");
8708 remote_buffer_add_int (&p
, &left
, fd
);
8709 remote_buffer_add_string (&p
, &left
, ",");
8711 remote_buffer_add_int (&p
, &left
, offset
);
8712 remote_buffer_add_string (&p
, &left
, ",");
8714 p
+= remote_escape_output (write_buf
, len
, p
, &out_len
,
8715 get_remote_packet_size () - (p
- rs
->buf
));
8717 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_pwrite
,
8718 remote_errno
, NULL
, NULL
);
8721 /* Read up to LEN bytes FD on the remote target into READ_BUF
8722 Return the number of bytes read, or -1 if an error occurs (and
8723 set *REMOTE_ERRNO). */
8726 remote_hostio_pread (int fd
, gdb_byte
*read_buf
, int len
,
8727 ULONGEST offset
, int *remote_errno
)
8729 struct remote_state
*rs
= get_remote_state ();
8732 int left
= get_remote_packet_size ();
8733 int ret
, attachment_len
;
8736 remote_buffer_add_string (&p
, &left
, "vFile:pread:");
8738 remote_buffer_add_int (&p
, &left
, fd
);
8739 remote_buffer_add_string (&p
, &left
, ",");
8741 remote_buffer_add_int (&p
, &left
, len
);
8742 remote_buffer_add_string (&p
, &left
, ",");
8744 remote_buffer_add_int (&p
, &left
, offset
);
8746 ret
= remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_pread
,
8747 remote_errno
, &attachment
,
8753 read_len
= remote_unescape_input (attachment
, attachment_len
,
8755 if (read_len
!= ret
)
8756 error (_("Read returned %d, but %d bytes."), ret
, (int) read_len
);
8761 /* Close FD on the remote target. Return 0, or -1 if an error occurs
8762 (and set *REMOTE_ERRNO). */
8765 remote_hostio_close (int fd
, int *remote_errno
)
8767 struct remote_state
*rs
= get_remote_state ();
8769 int left
= get_remote_packet_size () - 1;
8771 remote_buffer_add_string (&p
, &left
, "vFile:close:");
8773 remote_buffer_add_int (&p
, &left
, fd
);
8775 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_close
,
8776 remote_errno
, NULL
, NULL
);
8779 /* Unlink FILENAME on the remote target. Return 0, or -1 if an error
8780 occurs (and set *REMOTE_ERRNO). */
8783 remote_hostio_unlink (const char *filename
, int *remote_errno
)
8785 struct remote_state
*rs
= get_remote_state ();
8787 int left
= get_remote_packet_size () - 1;
8789 remote_buffer_add_string (&p
, &left
, "vFile:unlink:");
8791 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
8794 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_unlink
,
8795 remote_errno
, NULL
, NULL
);
8799 remote_fileio_errno_to_host (int errnum
)
8823 case FILEIO_ENOTDIR
:
8843 case FILEIO_ENAMETOOLONG
:
8844 return ENAMETOOLONG
;
8850 remote_hostio_error (int errnum
)
8852 int host_error
= remote_fileio_errno_to_host (errnum
);
8854 if (host_error
== -1)
8855 error (_("Unknown remote I/O error %d"), errnum
);
8857 error (_("Remote I/O error: %s"), safe_strerror (host_error
));
8861 remote_hostio_close_cleanup (void *opaque
)
8863 int fd
= *(int *) opaque
;
8866 remote_hostio_close (fd
, &remote_errno
);
8871 remote_bfd_iovec_open (struct bfd
*abfd
, void *open_closure
)
8873 const char *filename
= bfd_get_filename (abfd
);
8874 int fd
, remote_errno
;
8877 gdb_assert (remote_filename_p (filename
));
8879 fd
= remote_hostio_open (filename
+ 7, FILEIO_O_RDONLY
, 0, &remote_errno
);
8882 errno
= remote_fileio_errno_to_host (remote_errno
);
8883 bfd_set_error (bfd_error_system_call
);
8887 stream
= xmalloc (sizeof (int));
8893 remote_bfd_iovec_close (struct bfd
*abfd
, void *stream
)
8895 int fd
= *(int *)stream
;
8900 /* Ignore errors on close; these may happen if the remote
8901 connection was already torn down. */
8902 remote_hostio_close (fd
, &remote_errno
);
8908 remote_bfd_iovec_pread (struct bfd
*abfd
, void *stream
, void *buf
,
8909 file_ptr nbytes
, file_ptr offset
)
8911 int fd
= *(int *)stream
;
8913 file_ptr pos
, bytes
;
8916 while (nbytes
> pos
)
8918 bytes
= remote_hostio_pread (fd
, (char *)buf
+ pos
, nbytes
- pos
,
8919 offset
+ pos
, &remote_errno
);
8921 /* Success, but no bytes, means end-of-file. */
8925 errno
= remote_fileio_errno_to_host (remote_errno
);
8926 bfd_set_error (bfd_error_system_call
);
8937 remote_bfd_iovec_stat (struct bfd
*abfd
, void *stream
, struct stat
*sb
)
8939 /* FIXME: We should probably implement remote_hostio_stat. */
8940 sb
->st_size
= INT_MAX
;
8945 remote_filename_p (const char *filename
)
8947 return strncmp (filename
, "remote:", 7) == 0;
8951 remote_bfd_open (const char *remote_file
, const char *target
)
8953 return bfd_openr_iovec (remote_file
, target
,
8954 remote_bfd_iovec_open
, NULL
,
8955 remote_bfd_iovec_pread
,
8956 remote_bfd_iovec_close
,
8957 remote_bfd_iovec_stat
);
8961 remote_file_put (const char *local_file
, const char *remote_file
, int from_tty
)
8963 struct cleanup
*back_to
, *close_cleanup
;
8964 int retcode
, fd
, remote_errno
, bytes
, io_size
;
8967 int bytes_in_buffer
;
8972 error (_("command can only be used with remote target"));
8974 file
= fopen (local_file
, "rb");
8976 perror_with_name (local_file
);
8977 back_to
= make_cleanup_fclose (file
);
8979 fd
= remote_hostio_open (remote_file
, (FILEIO_O_WRONLY
| FILEIO_O_CREAT
8981 0700, &remote_errno
);
8983 remote_hostio_error (remote_errno
);
8985 /* Send up to this many bytes at once. They won't all fit in the
8986 remote packet limit, so we'll transfer slightly fewer. */
8987 io_size
= get_remote_packet_size ();
8988 buffer
= xmalloc (io_size
);
8989 make_cleanup (xfree
, buffer
);
8991 close_cleanup
= make_cleanup (remote_hostio_close_cleanup
, &fd
);
8993 bytes_in_buffer
= 0;
8996 while (bytes_in_buffer
|| !saw_eof
)
9000 bytes
= fread (buffer
+ bytes_in_buffer
, 1, io_size
- bytes_in_buffer
,
9005 error (_("Error reading %s."), local_file
);
9008 /* EOF. Unless there is something still in the
9009 buffer from the last iteration, we are done. */
9011 if (bytes_in_buffer
== 0)
9019 bytes
+= bytes_in_buffer
;
9020 bytes_in_buffer
= 0;
9022 retcode
= remote_hostio_pwrite (fd
, buffer
, bytes
, offset
, &remote_errno
);
9025 remote_hostio_error (remote_errno
);
9026 else if (retcode
== 0)
9027 error (_("Remote write of %d bytes returned 0!"), bytes
);
9028 else if (retcode
< bytes
)
9030 /* Short write. Save the rest of the read data for the next
9032 bytes_in_buffer
= bytes
- retcode
;
9033 memmove (buffer
, buffer
+ retcode
, bytes_in_buffer
);
9039 discard_cleanups (close_cleanup
);
9040 if (remote_hostio_close (fd
, &remote_errno
))
9041 remote_hostio_error (remote_errno
);
9044 printf_filtered (_("Successfully sent file \"%s\".\n"), local_file
);
9045 do_cleanups (back_to
);
9049 remote_file_get (const char *remote_file
, const char *local_file
, int from_tty
)
9051 struct cleanup
*back_to
, *close_cleanup
;
9052 int fd
, remote_errno
, bytes
, io_size
;
9058 error (_("command can only be used with remote target"));
9060 fd
= remote_hostio_open (remote_file
, FILEIO_O_RDONLY
, 0, &remote_errno
);
9062 remote_hostio_error (remote_errno
);
9064 file
= fopen (local_file
, "wb");
9066 perror_with_name (local_file
);
9067 back_to
= make_cleanup_fclose (file
);
9069 /* Send up to this many bytes at once. They won't all fit in the
9070 remote packet limit, so we'll transfer slightly fewer. */
9071 io_size
= get_remote_packet_size ();
9072 buffer
= xmalloc (io_size
);
9073 make_cleanup (xfree
, buffer
);
9075 close_cleanup
= make_cleanup (remote_hostio_close_cleanup
, &fd
);
9080 bytes
= remote_hostio_pread (fd
, buffer
, io_size
, offset
, &remote_errno
);
9082 /* Success, but no bytes, means end-of-file. */
9085 remote_hostio_error (remote_errno
);
9089 bytes
= fwrite (buffer
, 1, bytes
, file
);
9091 perror_with_name (local_file
);
9094 discard_cleanups (close_cleanup
);
9095 if (remote_hostio_close (fd
, &remote_errno
))
9096 remote_hostio_error (remote_errno
);
9099 printf_filtered (_("Successfully fetched file \"%s\".\n"), remote_file
);
9100 do_cleanups (back_to
);
9104 remote_file_delete (const char *remote_file
, int from_tty
)
9106 int retcode
, remote_errno
;
9109 error (_("command can only be used with remote target"));
9111 retcode
= remote_hostio_unlink (remote_file
, &remote_errno
);
9113 remote_hostio_error (remote_errno
);
9116 printf_filtered (_("Successfully deleted file \"%s\".\n"), remote_file
);
9120 remote_put_command (char *args
, int from_tty
)
9122 struct cleanup
*back_to
;
9126 error_no_arg (_("file to put"));
9128 argv
= gdb_buildargv (args
);
9129 back_to
= make_cleanup_freeargv (argv
);
9130 if (argv
[0] == NULL
|| argv
[1] == NULL
|| argv
[2] != NULL
)
9131 error (_("Invalid parameters to remote put"));
9133 remote_file_put (argv
[0], argv
[1], from_tty
);
9135 do_cleanups (back_to
);
9139 remote_get_command (char *args
, int from_tty
)
9141 struct cleanup
*back_to
;
9145 error_no_arg (_("file to get"));
9147 argv
= gdb_buildargv (args
);
9148 back_to
= make_cleanup_freeargv (argv
);
9149 if (argv
[0] == NULL
|| argv
[1] == NULL
|| argv
[2] != NULL
)
9150 error (_("Invalid parameters to remote get"));
9152 remote_file_get (argv
[0], argv
[1], from_tty
);
9154 do_cleanups (back_to
);
9158 remote_delete_command (char *args
, int from_tty
)
9160 struct cleanup
*back_to
;
9164 error_no_arg (_("file to delete"));
9166 argv
= gdb_buildargv (args
);
9167 back_to
= make_cleanup_freeargv (argv
);
9168 if (argv
[0] == NULL
|| argv
[1] != NULL
)
9169 error (_("Invalid parameters to remote delete"));
9171 remote_file_delete (argv
[0], from_tty
);
9173 do_cleanups (back_to
);
9177 remote_command (char *args
, int from_tty
)
9179 help_list (remote_cmdlist
, "remote ", -1, gdb_stdout
);
9183 remote_can_execute_reverse (void)
9185 if (remote_protocol_packets
[PACKET_bs
].support
== PACKET_ENABLE
9186 || remote_protocol_packets
[PACKET_bc
].support
== PACKET_ENABLE
)
9193 remote_supports_non_stop (void)
9199 remote_supports_multi_process (void)
9201 struct remote_state
*rs
= get_remote_state ();
9202 return remote_multi_process_p (rs
);
9206 remote_supports_cond_tracepoints (void)
9208 struct remote_state
*rs
= get_remote_state ();
9209 return rs
->cond_tracepoints
;
9213 remote_supports_fast_tracepoints (void)
9215 struct remote_state
*rs
= get_remote_state ();
9216 return rs
->fast_tracepoints
;
9220 remote_trace_init ()
9223 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
9224 if (strcmp (target_buf
, "OK"))
9225 error (_("Target does not support this command."));
9228 static void free_actions_list (char **actions_list
);
9229 static void free_actions_list_cleanup_wrapper (void *);
9231 free_actions_list_cleanup_wrapper (void *al
)
9233 free_actions_list (al
);
9237 free_actions_list (char **actions_list
)
9241 if (actions_list
== 0)
9244 for (ndx
= 0; actions_list
[ndx
]; ndx
++)
9245 xfree (actions_list
[ndx
]);
9247 xfree (actions_list
);
9251 remote_download_tracepoint (struct breakpoint
*t
)
9257 char **stepping_actions
;
9259 struct cleanup
*old_chain
= NULL
;
9260 struct agent_expr
*aexpr
;
9261 struct cleanup
*aexpr_chain
= NULL
;
9264 encode_actions (t
, &tdp_actions
, &stepping_actions
);
9265 old_chain
= make_cleanup (free_actions_list_cleanup_wrapper
,
9267 (void) make_cleanup (free_actions_list_cleanup_wrapper
, stepping_actions
);
9269 tpaddr
= t
->loc
->address
;
9270 sprintf_vma (tmp
, (t
->loc
? tpaddr
: 0));
9271 sprintf (buf
, "QTDP:%x:%s:%c:%lx:%x", t
->number
,
9273 (t
->enable_state
== bp_enabled
? 'E' : 'D'),
9274 t
->step_count
, t
->pass_count
);
9275 /* Fast tracepoints are mostly handled by the target, but we can
9276 tell the target how big of an instruction block should be moved
9278 if (t
->type
== bp_fast_tracepoint
)
9280 /* Only test for support at download time; we may not know
9281 target capabilities at definition time. */
9282 if (remote_supports_fast_tracepoints ())
9286 if (gdbarch_fast_tracepoint_valid_at (target_gdbarch
,
9287 tpaddr
, &isize
, NULL
))
9288 sprintf (buf
+ strlen (buf
), ":F%x", isize
);
9290 /* If it passed validation at definition but fails now,
9291 something is very wrong. */
9292 internal_error (__FILE__
, __LINE__
,
9293 "Fast tracepoint not valid during download");
9296 /* Fast tracepoints are functionally identical to regular
9297 tracepoints, so don't take lack of support as a reason to
9298 give up on the trace run. */
9299 warning (_("Target does not support fast tracepoints, downloading %d as regular tracepoint"), t
->number
);
9301 /* If the tracepoint has a conditional, make it into an agent
9302 expression and append to the definition. */
9305 /* Only test support at download time, we may not know target
9306 capabilities at definition time. */
9307 if (remote_supports_cond_tracepoints ())
9309 aexpr
= gen_eval_for_expr (t
->loc
->address
, t
->loc
->cond
);
9310 aexpr_chain
= make_cleanup_free_agent_expr (aexpr
);
9311 sprintf (buf
+ strlen (buf
), ":X%x,", aexpr
->len
);
9312 pkt
= buf
+ strlen (buf
);
9313 for (ndx
= 0; ndx
< aexpr
->len
; ++ndx
)
9314 pkt
= pack_hex_byte (pkt
, aexpr
->buf
[ndx
]);
9316 do_cleanups (aexpr_chain
);
9319 warning (_("Target does not support conditional tracepoints, ignoring tp %d cond"), t
->number
);
9322 if (t
->actions
|| *default_collect
)
9325 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
9326 if (strcmp (target_buf
, "OK"))
9327 error (_("Target does not support tracepoints."));
9329 if (!t
->actions
&& !*default_collect
)
9332 /* do_single_steps (t); */
9335 for (ndx
= 0; tdp_actions
[ndx
]; ndx
++)
9337 QUIT
; /* allow user to bail out with ^C */
9338 sprintf (buf
, "QTDP:-%x:%s:%s%c",
9339 t
->number
, tmp
, /* address */
9341 ((tdp_actions
[ndx
+ 1] || stepping_actions
)
9344 remote_get_noisy_reply (&target_buf
,
9346 if (strcmp (target_buf
, "OK"))
9347 error (_("Error on target while setting tracepoints."));
9350 if (stepping_actions
)
9352 for (ndx
= 0; stepping_actions
[ndx
]; ndx
++)
9354 QUIT
; /* allow user to bail out with ^C */
9355 sprintf (buf
, "QTDP:-%x:%s:%s%s%s",
9356 t
->number
, tmp
, /* address */
9357 ((ndx
== 0) ? "S" : ""),
9358 stepping_actions
[ndx
],
9359 (stepping_actions
[ndx
+ 1] ? "-" : ""));
9361 remote_get_noisy_reply (&target_buf
,
9363 if (strcmp (target_buf
, "OK"))
9364 error (_("Error on target while setting tracepoints."));
9367 do_cleanups (old_chain
);
9372 remote_download_trace_state_variable (struct trace_state_variable
*tsv
)
9374 struct remote_state
*rs
= get_remote_state ();
9377 sprintf (rs
->buf
, "QTDV:%x:%s:%x:",
9378 tsv
->number
, phex ((ULONGEST
) tsv
->initial_value
, 8), tsv
->builtin
);
9379 p
= rs
->buf
+ strlen (rs
->buf
);
9380 if ((p
- rs
->buf
) + strlen (tsv
->name
) * 2 >= get_remote_packet_size ())
9381 error (_("Trace state variable name too long for tsv definition packet"));
9382 p
+= 2 * bin2hex ((gdb_byte
*) (tsv
->name
), p
, 0);
9385 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
9389 remote_trace_set_readonly_regions ()
9397 return; /* No information to give. */
9399 strcpy (target_buf
, "QTro");
9400 for (s
= exec_bfd
->sections
; s
; s
= s
->next
)
9402 char tmp1
[40], tmp2
[40];
9404 if ((s
->flags
& SEC_LOAD
) == 0 ||
9405 /* (s->flags & SEC_CODE) == 0 || */
9406 (s
->flags
& SEC_READONLY
) == 0)
9411 size
= bfd_get_section_size (s
);
9412 sprintf_vma (tmp1
, lma
);
9413 sprintf_vma (tmp2
, lma
+ size
);
9414 sprintf (target_buf
+ strlen (target_buf
),
9415 ":%s,%s", tmp1
, tmp2
);
9419 putpkt (target_buf
);
9420 getpkt (&target_buf
, &target_buf_size
, 0);
9425 remote_trace_start ()
9428 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
9429 if (strcmp (target_buf
, "OK"))
9430 error (_("Bogus reply from target: %s"), target_buf
);
9434 remote_get_trace_status (struct trace_status
*ts
)
9436 char *p
, *p1
, *p_temp
;
9438 /* FIXME we need to get register block size some other way */
9439 extern int trace_regblock_size
;
9440 trace_regblock_size
= get_remote_arch_state ()->sizeof_g_packet
;
9442 putpkt ("qTStatus");
9443 getpkt (&target_buf
, &target_buf_size
, 0);
9444 /* FIXME should handle more variety of replies */
9448 /* If the remote target doesn't do tracing, flag it. */
9452 /* We're working with a live target. */
9455 /* Set some defaults. */
9456 ts
->running_known
= 0;
9457 ts
->stop_reason
= trace_stop_reason_unknown
;
9458 ts
->traceframe_count
= -1;
9459 ts
->buffer_free
= 0;
9462 error (_("Bogus trace status reply from target: %s"), target_buf
);
9464 parse_trace_status (p
, ts
);
9470 remote_trace_stop ()
9473 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
9474 if (strcmp (target_buf
, "OK"))
9475 error (_("Bogus reply from target: %s"), target_buf
);
9479 remote_trace_find (enum trace_find_type type
, int num
,
9480 ULONGEST addr1
, ULONGEST addr2
,
9483 struct remote_state
*rs
= get_remote_state ();
9485 int target_frameno
= -1, target_tracept
= -1;
9488 strcpy (p
, "QTFrame:");
9489 p
= strchr (p
, '\0');
9493 sprintf (p
, "%x", num
);
9496 sprintf (p
, "pc:%s", phex_nz (addr1
, 0));
9499 sprintf (p
, "tdp:%x", num
);
9502 sprintf (p
, "range:%s:%s", phex_nz (addr1
, 0), phex_nz (addr2
, 0));
9505 sprintf (p
, "outside:%s:%s", phex_nz (addr1
, 0), phex_nz (addr2
, 0));
9508 error ("Unknown trace find type %d", type
);
9512 reply
= remote_get_noisy_reply (&(rs
->buf
), &sizeof_pkt
);
9514 while (reply
&& *reply
)
9518 if ((target_frameno
= (int) strtol (++reply
, &reply
, 16)) == -1)
9519 error (_("Target failed to find requested trace frame."));
9522 if ((target_tracept
= (int) strtol (++reply
, &reply
, 16)) == -1)
9523 error (_("Target failed to find requested trace frame."));
9525 case 'O': /* "OK"? */
9526 if (reply
[1] == 'K' && reply
[2] == '\0')
9529 error (_("Bogus reply from target: %s"), reply
);
9532 error (_("Bogus reply from target: %s"), reply
);
9535 *tpp
= target_tracept
;
9536 return target_frameno
;
9540 remote_get_trace_state_variable_value (int tsvnum
, LONGEST
*val
)
9542 struct remote_state
*rs
= get_remote_state ();
9546 sprintf (rs
->buf
, "qTV:%x", tsvnum
);
9548 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
9549 if (reply
&& *reply
)
9553 unpack_varlen_hex (reply
+ 1, &uval
);
9554 *val
= (LONGEST
) uval
;
9562 remote_save_trace_data (char *filename
)
9564 struct remote_state
*rs
= get_remote_state ();
9568 strcpy (p
, "QTSave:");
9570 if ((p
- rs
->buf
) + strlen (filename
) * 2 >= get_remote_packet_size ())
9571 error (_("Remote file name too long for trace save packet"));
9572 p
+= 2 * bin2hex ((gdb_byte
*) filename
, p
, 0);
9575 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
9579 /* This is basically a memory transfer, but needs to be its own packet
9580 because we don't know how the target actually organizes its trace
9581 memory, plus we want to be able to ask for as much as possible, but
9582 not be unhappy if we don't get as much as we ask for. */
9585 remote_get_raw_trace_data (gdb_byte
*buf
, ULONGEST offset
, LONGEST len
)
9587 struct remote_state
*rs
= get_remote_state ();
9593 strcpy (p
, "qTBuffer:");
9595 p
+= hexnumstr (p
, offset
);
9597 p
+= hexnumstr (p
, len
);
9601 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
9602 if (reply
&& *reply
)
9604 /* 'l' by itself means we're at the end of the buffer and
9605 there is nothing more to get. */
9609 /* Convert the reply into binary. Limit the number of bytes to
9610 convert according to our passed-in buffer size, rather than
9611 what was returned in the packet; if the target is
9612 unexpectedly generous and gives us a bigger reply than we
9613 asked for, we don't want to crash. */
9614 rslt
= hex2bin (target_buf
, buf
, len
);
9618 /* Something went wrong, flag as an error. */
9623 remote_set_disconnected_tracing (int val
)
9625 struct remote_state
*rs
= get_remote_state ();
9627 sprintf (rs
->buf
, "QTDisconnected:%x", val
);
9629 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
9630 if (strcmp (target_buf
, "OK"))
9631 error (_("Target does not support this command."));
9635 remote_core_of_thread (struct target_ops
*ops
, ptid_t ptid
)
9637 struct thread_info
*info
= find_thread_ptid (ptid
);
9638 if (info
&& info
->private)
9639 return info
->private->core
;
9644 init_remote_ops (void)
9646 remote_ops
.to_shortname
= "remote";
9647 remote_ops
.to_longname
= "Remote serial target in gdb-specific protocol";
9649 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
9650 Specify the serial device it is connected to\n\
9651 (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).";
9652 remote_ops
.to_open
= remote_open
;
9653 remote_ops
.to_close
= remote_close
;
9654 remote_ops
.to_detach
= remote_detach
;
9655 remote_ops
.to_disconnect
= remote_disconnect
;
9656 remote_ops
.to_resume
= remote_resume
;
9657 remote_ops
.to_wait
= remote_wait
;
9658 remote_ops
.to_fetch_registers
= remote_fetch_registers
;
9659 remote_ops
.to_store_registers
= remote_store_registers
;
9660 remote_ops
.to_prepare_to_store
= remote_prepare_to_store
;
9661 remote_ops
.deprecated_xfer_memory
= remote_xfer_memory
;
9662 remote_ops
.to_files_info
= remote_files_info
;
9663 remote_ops
.to_insert_breakpoint
= remote_insert_breakpoint
;
9664 remote_ops
.to_remove_breakpoint
= remote_remove_breakpoint
;
9665 remote_ops
.to_stopped_by_watchpoint
= remote_stopped_by_watchpoint
;
9666 remote_ops
.to_stopped_data_address
= remote_stopped_data_address
;
9667 remote_ops
.to_can_use_hw_breakpoint
= remote_check_watch_resources
;
9668 remote_ops
.to_insert_hw_breakpoint
= remote_insert_hw_breakpoint
;
9669 remote_ops
.to_remove_hw_breakpoint
= remote_remove_hw_breakpoint
;
9670 remote_ops
.to_insert_watchpoint
= remote_insert_watchpoint
;
9671 remote_ops
.to_remove_watchpoint
= remote_remove_watchpoint
;
9672 remote_ops
.to_kill
= remote_kill
;
9673 remote_ops
.to_load
= generic_load
;
9674 remote_ops
.to_mourn_inferior
= remote_mourn
;
9675 remote_ops
.to_thread_alive
= remote_thread_alive
;
9676 remote_ops
.to_find_new_threads
= remote_threads_info
;
9677 remote_ops
.to_pid_to_str
= remote_pid_to_str
;
9678 remote_ops
.to_extra_thread_info
= remote_threads_extra_info
;
9679 remote_ops
.to_stop
= remote_stop
;
9680 remote_ops
.to_xfer_partial
= remote_xfer_partial
;
9681 remote_ops
.to_rcmd
= remote_rcmd
;
9682 remote_ops
.to_log_command
= serial_log_command
;
9683 remote_ops
.to_get_thread_local_address
= remote_get_thread_local_address
;
9684 remote_ops
.to_stratum
= process_stratum
;
9685 remote_ops
.to_has_all_memory
= default_child_has_all_memory
;
9686 remote_ops
.to_has_memory
= default_child_has_memory
;
9687 remote_ops
.to_has_stack
= default_child_has_stack
;
9688 remote_ops
.to_has_registers
= default_child_has_registers
;
9689 remote_ops
.to_has_execution
= default_child_has_execution
;
9690 remote_ops
.to_has_thread_control
= tc_schedlock
; /* can lock scheduler */
9691 remote_ops
.to_can_execute_reverse
= remote_can_execute_reverse
;
9692 remote_ops
.to_magic
= OPS_MAGIC
;
9693 remote_ops
.to_memory_map
= remote_memory_map
;
9694 remote_ops
.to_flash_erase
= remote_flash_erase
;
9695 remote_ops
.to_flash_done
= remote_flash_done
;
9696 remote_ops
.to_read_description
= remote_read_description
;
9697 remote_ops
.to_search_memory
= remote_search_memory
;
9698 remote_ops
.to_can_async_p
= remote_can_async_p
;
9699 remote_ops
.to_is_async_p
= remote_is_async_p
;
9700 remote_ops
.to_async
= remote_async
;
9701 remote_ops
.to_async_mask
= remote_async_mask
;
9702 remote_ops
.to_terminal_inferior
= remote_terminal_inferior
;
9703 remote_ops
.to_terminal_ours
= remote_terminal_ours
;
9704 remote_ops
.to_supports_non_stop
= remote_supports_non_stop
;
9705 remote_ops
.to_supports_multi_process
= remote_supports_multi_process
;
9706 remote_ops
.to_trace_init
= remote_trace_init
;
9707 remote_ops
.to_download_tracepoint
= remote_download_tracepoint
;
9708 remote_ops
.to_download_trace_state_variable
= remote_download_trace_state_variable
;
9709 remote_ops
.to_trace_set_readonly_regions
= remote_trace_set_readonly_regions
;
9710 remote_ops
.to_trace_start
= remote_trace_start
;
9711 remote_ops
.to_get_trace_status
= remote_get_trace_status
;
9712 remote_ops
.to_trace_stop
= remote_trace_stop
;
9713 remote_ops
.to_trace_find
= remote_trace_find
;
9714 remote_ops
.to_get_trace_state_variable_value
= remote_get_trace_state_variable_value
;
9715 remote_ops
.to_save_trace_data
= remote_save_trace_data
;
9716 remote_ops
.to_upload_tracepoints
= remote_upload_tracepoints
;
9717 remote_ops
.to_upload_trace_state_variables
= remote_upload_trace_state_variables
;
9718 remote_ops
.to_get_raw_trace_data
= remote_get_raw_trace_data
;
9719 remote_ops
.to_set_disconnected_tracing
= remote_set_disconnected_tracing
;
9720 remote_ops
.to_core_of_thread
= remote_core_of_thread
;
9723 /* Set up the extended remote vector by making a copy of the standard
9724 remote vector and adding to it. */
9727 init_extended_remote_ops (void)
9729 extended_remote_ops
= remote_ops
;
9731 extended_remote_ops
.to_shortname
= "extended-remote";
9732 extended_remote_ops
.to_longname
=
9733 "Extended remote serial target in gdb-specific protocol";
9734 extended_remote_ops
.to_doc
=
9735 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
9736 Specify the serial device it is connected to (e.g. /dev/ttya).";
9737 extended_remote_ops
.to_open
= extended_remote_open
;
9738 extended_remote_ops
.to_create_inferior
= extended_remote_create_inferior
;
9739 extended_remote_ops
.to_mourn_inferior
= extended_remote_mourn
;
9740 extended_remote_ops
.to_detach
= extended_remote_detach
;
9741 extended_remote_ops
.to_attach
= extended_remote_attach
;
9742 extended_remote_ops
.to_kill
= extended_remote_kill
;
9746 remote_can_async_p (void)
9748 if (!target_async_permitted
)
9749 /* We only enable async when the user specifically asks for it. */
9752 /* We're async whenever the serial device is. */
9753 return remote_async_mask_value
&& serial_can_async_p (remote_desc
);
9757 remote_is_async_p (void)
9759 if (!target_async_permitted
)
9760 /* We only enable async when the user specifically asks for it. */
9763 /* We're async whenever the serial device is. */
9764 return remote_async_mask_value
&& serial_is_async_p (remote_desc
);
9767 /* Pass the SERIAL event on and up to the client. One day this code
9768 will be able to delay notifying the client of an event until the
9769 point where an entire packet has been received. */
9771 static void (*async_client_callback
) (enum inferior_event_type event_type
,
9773 static void *async_client_context
;
9774 static serial_event_ftype remote_async_serial_handler
;
9777 remote_async_serial_handler (struct serial
*scb
, void *context
)
9779 /* Don't propogate error information up to the client. Instead let
9780 the client find out about the error by querying the target. */
9781 async_client_callback (INF_REG_EVENT
, async_client_context
);
9785 remote_async_inferior_event_handler (gdb_client_data data
)
9787 inferior_event_handler (INF_REG_EVENT
, NULL
);
9791 remote_async_get_pending_events_handler (gdb_client_data data
)
9793 remote_get_pending_stop_replies ();
9797 remote_async (void (*callback
) (enum inferior_event_type event_type
,
9798 void *context
), void *context
)
9800 if (remote_async_mask_value
== 0)
9801 internal_error (__FILE__
, __LINE__
,
9802 _("Calling remote_async when async is masked"));
9804 if (callback
!= NULL
)
9806 serial_async (remote_desc
, remote_async_serial_handler
, NULL
);
9807 async_client_callback
= callback
;
9808 async_client_context
= context
;
9811 serial_async (remote_desc
, NULL
, NULL
);
9815 remote_async_mask (int new_mask
)
9817 int curr_mask
= remote_async_mask_value
;
9818 remote_async_mask_value
= new_mask
;
9823 set_remote_cmd (char *args
, int from_tty
)
9825 help_list (remote_set_cmdlist
, "set remote ", -1, gdb_stdout
);
9829 show_remote_cmd (char *args
, int from_tty
)
9831 /* We can't just use cmd_show_list here, because we want to skip
9832 the redundant "show remote Z-packet" and the legacy aliases. */
9833 struct cleanup
*showlist_chain
;
9834 struct cmd_list_element
*list
= remote_show_cmdlist
;
9836 showlist_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "showlist");
9837 for (; list
!= NULL
; list
= list
->next
)
9838 if (strcmp (list
->name
, "Z-packet") == 0)
9840 else if (list
->type
== not_set_cmd
)
9841 /* Alias commands are exactly like the original, except they
9842 don't have the normal type. */
9846 struct cleanup
*option_chain
9847 = make_cleanup_ui_out_tuple_begin_end (uiout
, "option");
9848 ui_out_field_string (uiout
, "name", list
->name
);
9849 ui_out_text (uiout
, ": ");
9850 if (list
->type
== show_cmd
)
9851 do_setshow_command ((char *) NULL
, from_tty
, list
);
9853 cmd_func (list
, NULL
, from_tty
);
9854 /* Close the tuple. */
9855 do_cleanups (option_chain
);
9858 /* Close the tuple. */
9859 do_cleanups (showlist_chain
);
9863 /* Function to be called whenever a new objfile (shlib) is detected. */
9865 remote_new_objfile (struct objfile
*objfile
)
9867 if (remote_desc
!= 0) /* Have a remote connection. */
9868 remote_check_symbols (objfile
);
9871 /* Pull all the tracepoints defined on the target and create local
9872 data structures representing them. We don't want to create real
9873 tracepoints yet, we don't want to mess up the user's existing
9877 remote_upload_tracepoints (struct uploaded_tp
**utpp
)
9879 struct remote_state
*rs
= get_remote_state ();
9882 /* Ask for a first packet of tracepoint definition. */
9884 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9886 while (*p
&& *p
!= 'l')
9888 parse_tracepoint_definition (p
, utpp
);
9889 /* Ask for another packet of tracepoint definition. */
9891 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9898 remote_upload_trace_state_variables (struct uploaded_tsv
**utsvp
)
9900 struct remote_state
*rs
= get_remote_state ();
9903 /* Ask for a first packet of variable definition. */
9905 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9907 while (*p
&& *p
!= 'l')
9909 parse_tsv_definition (p
, utsvp
);
9910 /* Ask for another packet of variable definition. */
9912 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9919 _initialize_remote (void)
9921 struct remote_state
*rs
;
9922 struct cmd_list_element
*cmd
;
9925 /* architecture specific data */
9926 remote_gdbarch_data_handle
=
9927 gdbarch_data_register_post_init (init_remote_state
);
9928 remote_g_packet_data_handle
=
9929 gdbarch_data_register_pre_init (remote_g_packet_data_init
);
9931 /* Initialize the per-target state. At the moment there is only one
9932 of these, not one per target. Only one target is active at a
9933 time. The default buffer size is unimportant; it will be expanded
9934 whenever a larger buffer is needed. */
9935 rs
= get_remote_state_raw ();
9937 rs
->buf
= xmalloc (rs
->buf_size
);
9940 add_target (&remote_ops
);
9942 init_extended_remote_ops ();
9943 add_target (&extended_remote_ops
);
9945 /* Hook into new objfile notification. */
9946 observer_attach_new_objfile (remote_new_objfile
);
9948 /* Set up signal handlers. */
9949 sigint_remote_token
=
9950 create_async_signal_handler (async_remote_interrupt
, NULL
);
9951 sigint_remote_twice_token
=
9952 create_async_signal_handler (inferior_event_handler_wrapper
, NULL
);
9955 init_remote_threadtests ();
9958 /* set/show remote ... */
9960 add_prefix_cmd ("remote", class_maintenance
, set_remote_cmd
, _("\
9961 Remote protocol specific variables\n\
9962 Configure various remote-protocol specific variables such as\n\
9963 the packets being used"),
9964 &remote_set_cmdlist
, "set remote ",
9965 0 /* allow-unknown */, &setlist
);
9966 add_prefix_cmd ("remote", class_maintenance
, show_remote_cmd
, _("\
9967 Remote protocol specific variables\n\
9968 Configure various remote-protocol specific variables such as\n\
9969 the packets being used"),
9970 &remote_show_cmdlist
, "show remote ",
9971 0 /* allow-unknown */, &showlist
);
9973 add_cmd ("compare-sections", class_obscure
, compare_sections_command
, _("\
9974 Compare section data on target to the exec file.\n\
9975 Argument is a single section name (default: all loaded sections)."),
9978 add_cmd ("packet", class_maintenance
, packet_command
, _("\
9979 Send an arbitrary packet to a remote target.\n\
9980 maintenance packet TEXT\n\
9981 If GDB is talking to an inferior via the GDB serial protocol, then\n\
9982 this command sends the string TEXT to the inferior, and displays the\n\
9983 response packet. GDB supplies the initial `$' character, and the\n\
9984 terminating `#' character and checksum."),
9987 add_setshow_boolean_cmd ("remotebreak", no_class
, &remote_break
, _("\
9988 Set whether to send break if interrupted."), _("\
9989 Show whether to send break if interrupted."), _("\
9990 If set, a break, instead of a cntrl-c, is sent to the remote target."),
9991 set_remotebreak
, show_remotebreak
,
9992 &setlist
, &showlist
);
9993 cmd_name
= "remotebreak";
9994 cmd
= lookup_cmd (&cmd_name
, setlist
, "", -1, 1);
9995 deprecate_cmd (cmd
, "set remote interrupt-sequence");
9996 cmd_name
= "remotebreak"; /* needed because lookup_cmd updates the pointer */
9997 cmd
= lookup_cmd (&cmd_name
, showlist
, "", -1, 1);
9998 deprecate_cmd (cmd
, "show remote interrupt-sequence");
10000 add_setshow_enum_cmd ("interrupt-sequence", class_support
,
10001 interrupt_sequence_modes
, &interrupt_sequence_mode
, _("\
10002 Set interrupt sequence to remote target."), _("\
10003 Show interrupt sequence to remote target."), _("\
10004 Valid value is \"Ctrl-C\", \"BREAK\" or \"BREAK-g\". The default is \"Ctrl-C\"."),
10005 NULL
, show_interrupt_sequence
,
10006 &remote_set_cmdlist
,
10007 &remote_show_cmdlist
);
10009 add_setshow_boolean_cmd ("interrupt-on-connect", class_support
,
10010 &interrupt_on_connect
, _("\
10011 Set whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \
10012 Show whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \
10013 If set, interrupt sequence is sent to remote target."),
10015 &remote_set_cmdlist
, &remote_show_cmdlist
);
10017 /* Install commands for configuring memory read/write packets. */
10019 add_cmd ("remotewritesize", no_class
, set_memory_write_packet_size
, _("\
10020 Set the maximum number of bytes per memory write packet (deprecated)."),
10022 add_cmd ("remotewritesize", no_class
, show_memory_write_packet_size
, _("\
10023 Show the maximum number of bytes per memory write packet (deprecated)."),
10025 add_cmd ("memory-write-packet-size", no_class
,
10026 set_memory_write_packet_size
, _("\
10027 Set the maximum number of bytes per memory-write packet.\n\
10028 Specify the number of bytes in a packet or 0 (zero) for the\n\
10029 default packet size. The actual limit is further reduced\n\
10030 dependent on the target. Specify ``fixed'' to disable the\n\
10031 further restriction and ``limit'' to enable that restriction."),
10032 &remote_set_cmdlist
);
10033 add_cmd ("memory-read-packet-size", no_class
,
10034 set_memory_read_packet_size
, _("\
10035 Set the maximum number of bytes per memory-read packet.\n\
10036 Specify the number of bytes in a packet or 0 (zero) for the\n\
10037 default packet size. The actual limit is further reduced\n\
10038 dependent on the target. Specify ``fixed'' to disable the\n\
10039 further restriction and ``limit'' to enable that restriction."),
10040 &remote_set_cmdlist
);
10041 add_cmd ("memory-write-packet-size", no_class
,
10042 show_memory_write_packet_size
,
10043 _("Show the maximum number of bytes per memory-write packet."),
10044 &remote_show_cmdlist
);
10045 add_cmd ("memory-read-packet-size", no_class
,
10046 show_memory_read_packet_size
,
10047 _("Show the maximum number of bytes per memory-read packet."),
10048 &remote_show_cmdlist
);
10050 add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class
,
10051 &remote_hw_watchpoint_limit
, _("\
10052 Set the maximum number of target hardware watchpoints."), _("\
10053 Show the maximum number of target hardware watchpoints."), _("\
10054 Specify a negative limit for unlimited."),
10055 NULL
, NULL
, /* FIXME: i18n: The maximum number of target hardware watchpoints is %s. */
10056 &remote_set_cmdlist
, &remote_show_cmdlist
);
10057 add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class
,
10058 &remote_hw_breakpoint_limit
, _("\
10059 Set the maximum number of target hardware breakpoints."), _("\
10060 Show the maximum number of target hardware breakpoints."), _("\
10061 Specify a negative limit for unlimited."),
10062 NULL
, NULL
, /* FIXME: i18n: The maximum number of target hardware breakpoints is %s. */
10063 &remote_set_cmdlist
, &remote_show_cmdlist
);
10065 add_setshow_integer_cmd ("remoteaddresssize", class_obscure
,
10066 &remote_address_size
, _("\
10067 Set the maximum size of the address (in bits) in a memory packet."), _("\
10068 Show the maximum size of the address (in bits) in a memory packet."), NULL
,
10070 NULL
, /* FIXME: i18n: */
10071 &setlist
, &showlist
);
10073 add_packet_config_cmd (&remote_protocol_packets
[PACKET_X
],
10074 "X", "binary-download", 1);
10076 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vCont
],
10077 "vCont", "verbose-resume", 0);
10079 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QPassSignals
],
10080 "QPassSignals", "pass-signals", 0);
10082 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSymbol
],
10083 "qSymbol", "symbol-lookup", 0);
10085 add_packet_config_cmd (&remote_protocol_packets
[PACKET_P
],
10086 "P", "set-register", 1);
10088 add_packet_config_cmd (&remote_protocol_packets
[PACKET_p
],
10089 "p", "fetch-register", 1);
10091 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z0
],
10092 "Z0", "software-breakpoint", 0);
10094 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z1
],
10095 "Z1", "hardware-breakpoint", 0);
10097 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z2
],
10098 "Z2", "write-watchpoint", 0);
10100 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z3
],
10101 "Z3", "read-watchpoint", 0);
10103 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z4
],
10104 "Z4", "access-watchpoint", 0);
10106 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_auxv
],
10107 "qXfer:auxv:read", "read-aux-vector", 0);
10109 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_features
],
10110 "qXfer:features:read", "target-features", 0);
10112 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_libraries
],
10113 "qXfer:libraries:read", "library-info", 0);
10115 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_memory_map
],
10116 "qXfer:memory-map:read", "memory-map", 0);
10118 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_spu_read
],
10119 "qXfer:spu:read", "read-spu-object", 0);
10121 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_spu_write
],
10122 "qXfer:spu:write", "write-spu-object", 0);
10124 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_osdata
],
10125 "qXfer:osdata:read", "osdata", 0);
10127 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_threads
],
10128 "qXfer:threads:read", "threads", 0);
10130 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_siginfo_read
],
10131 "qXfer:siginfo:read", "read-siginfo-object", 0);
10133 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_siginfo_write
],
10134 "qXfer:siginfo:write", "write-siginfo-object", 0);
10136 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qGetTLSAddr
],
10137 "qGetTLSAddr", "get-thread-local-storage-address",
10140 add_packet_config_cmd (&remote_protocol_packets
[PACKET_bc
],
10141 "bc", "reverse-continue", 0);
10143 add_packet_config_cmd (&remote_protocol_packets
[PACKET_bs
],
10144 "bs", "reverse-step", 0);
10146 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSupported
],
10147 "qSupported", "supported-packets", 0);
10149 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSearch_memory
],
10150 "qSearch:memory", "search-memory", 0);
10152 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_open
],
10153 "vFile:open", "hostio-open", 0);
10155 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_pread
],
10156 "vFile:pread", "hostio-pread", 0);
10158 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_pwrite
],
10159 "vFile:pwrite", "hostio-pwrite", 0);
10161 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_close
],
10162 "vFile:close", "hostio-close", 0);
10164 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_unlink
],
10165 "vFile:unlink", "hostio-unlink", 0);
10167 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vAttach
],
10168 "vAttach", "attach", 0);
10170 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vRun
],
10173 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QStartNoAckMode
],
10174 "QStartNoAckMode", "noack", 0);
10176 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vKill
],
10177 "vKill", "kill", 0);
10179 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qAttached
],
10180 "qAttached", "query-attached", 0);
10182 add_packet_config_cmd (&remote_protocol_packets
[PACKET_ConditionalTracepoints
],
10183 "ConditionalTracepoints", "conditional-tracepoints", 0);
10184 add_packet_config_cmd (&remote_protocol_packets
[PACKET_FastTracepoints
],
10185 "FastTracepoints", "fast-tracepoints", 0);
10187 /* Keep the old ``set remote Z-packet ...'' working. Each individual
10188 Z sub-packet has its own set and show commands, but users may
10189 have sets to this variable in their .gdbinit files (or in their
10191 add_setshow_auto_boolean_cmd ("Z-packet", class_obscure
,
10192 &remote_Z_packet_detect
, _("\
10193 Set use of remote protocol `Z' packets"), _("\
10194 Show use of remote protocol `Z' packets "), _("\
10195 When set, GDB will attempt to use the remote breakpoint and watchpoint\n\
10197 set_remote_protocol_Z_packet_cmd
,
10198 show_remote_protocol_Z_packet_cmd
, /* FIXME: i18n: Use of remote protocol `Z' packets is %s. */
10199 &remote_set_cmdlist
, &remote_show_cmdlist
);
10201 add_prefix_cmd ("remote", class_files
, remote_command
, _("\
10202 Manipulate files on the remote system\n\
10203 Transfer files to and from the remote target system."),
10204 &remote_cmdlist
, "remote ",
10205 0 /* allow-unknown */, &cmdlist
);
10207 add_cmd ("put", class_files
, remote_put_command
,
10208 _("Copy a local file to the remote system."),
10211 add_cmd ("get", class_files
, remote_get_command
,
10212 _("Copy a remote file to the local system."),
10215 add_cmd ("delete", class_files
, remote_delete_command
,
10216 _("Delete a remote file."),
10219 remote_exec_file
= xstrdup ("");
10220 add_setshow_string_noescape_cmd ("exec-file", class_files
,
10221 &remote_exec_file
, _("\
10222 Set the remote pathname for \"run\""), _("\
10223 Show the remote pathname for \"run\""), NULL
, NULL
, NULL
,
10224 &remote_set_cmdlist
, &remote_show_cmdlist
);
10226 /* Eventually initialize fileio. See fileio.c */
10227 initialize_remote_fileio (remote_set_cmdlist
, remote_show_cmdlist
);
10229 /* Take advantage of the fact that the LWP field is not used, to tag
10230 special ptids with it set to != 0. */
10231 magic_null_ptid
= ptid_build (42000, 1, -1);
10232 not_sent_ptid
= ptid_build (42000, 1, -2);
10233 any_thread_ptid
= ptid_build (42000, 1, 0);
10235 target_buf_size
= 2048;
10236 target_buf
= xmalloc (target_buf_size
);