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
)
3479 putpkt ("qSupported:multiprocess+");
3481 putpkt ("qSupported");
3483 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3485 /* If an error occured, warn, but do not return - just reset the
3486 buffer to empty and go on to disable features. */
3487 if (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_qSupported
])
3490 warning (_("Remote failure reply: %s"), rs
->buf
);
3495 memset (seen
, 0, sizeof (seen
));
3500 enum packet_support is_supported
;
3501 char *p
, *end
, *name_end
, *value
;
3503 /* First separate out this item from the rest of the packet. If
3504 there's another item after this, we overwrite the separator
3505 (terminated strings are much easier to work with). */
3507 end
= strchr (p
, ';');
3510 end
= p
+ strlen (p
);
3520 warning (_("empty item in \"qSupported\" response"));
3525 name_end
= strchr (p
, '=');
3528 /* This is a name=value entry. */
3529 is_supported
= PACKET_ENABLE
;
3530 value
= name_end
+ 1;
3539 is_supported
= PACKET_ENABLE
;
3543 is_supported
= PACKET_DISABLE
;
3547 is_supported
= PACKET_SUPPORT_UNKNOWN
;
3551 warning (_("unrecognized item \"%s\" in \"qSupported\" response"), p
);
3557 for (i
= 0; i
< ARRAY_SIZE (remote_protocol_features
); i
++)
3558 if (strcmp (remote_protocol_features
[i
].name
, p
) == 0)
3560 const struct protocol_feature
*feature
;
3563 feature
= &remote_protocol_features
[i
];
3564 feature
->func (feature
, is_supported
, value
);
3569 /* If we increased the packet size, make sure to increase the global
3570 buffer size also. We delay this until after parsing the entire
3571 qSupported packet, because this is the same buffer we were
3573 if (rs
->buf_size
< rs
->explicit_packet_size
)
3575 rs
->buf_size
= rs
->explicit_packet_size
;
3576 rs
->buf
= xrealloc (rs
->buf
, rs
->buf_size
);
3579 /* Handle the defaults for unmentioned features. */
3580 for (i
= 0; i
< ARRAY_SIZE (remote_protocol_features
); i
++)
3583 const struct protocol_feature
*feature
;
3585 feature
= &remote_protocol_features
[i
];
3586 feature
->func (feature
, feature
->default_support
, NULL
);
3592 remote_open_1 (char *name
, int from_tty
, struct target_ops
*target
, int extended_p
)
3594 struct remote_state
*rs
= get_remote_state ();
3597 error (_("To open a remote debug connection, you need to specify what\n"
3598 "serial device is attached to the remote system\n"
3599 "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."));
3601 /* See FIXME above. */
3602 if (!target_async_permitted
)
3603 wait_forever_enabled_p
= 1;
3605 /* If we're connected to a running target, target_preopen will kill it.
3606 But if we're connected to a target system with no running process,
3607 then we will still be connected when it returns. Ask this question
3608 first, before target_preopen has a chance to kill anything. */
3609 if (remote_desc
!= NULL
&& !have_inferiors ())
3612 || query (_("Already connected to a remote target. Disconnect? ")))
3615 error (_("Still connected."));
3618 target_preopen (from_tty
);
3620 unpush_target (target
);
3622 /* This time without a query. If we were connected to an
3623 extended-remote target and target_preopen killed the running
3624 process, we may still be connected. If we are starting "target
3625 remote" now, the extended-remote target will not have been
3626 removed by unpush_target. */
3627 if (remote_desc
!= NULL
&& !have_inferiors ())
3630 /* Make sure we send the passed signals list the next time we resume. */
3631 xfree (last_pass_packet
);
3632 last_pass_packet
= NULL
;
3634 remote_fileio_reset ();
3635 reopen_exec_file ();
3638 remote_desc
= remote_serial_open (name
);
3640 perror_with_name (name
);
3642 if (baud_rate
!= -1)
3644 if (serial_setbaudrate (remote_desc
, baud_rate
))
3646 /* The requested speed could not be set. Error out to
3647 top level after closing remote_desc. Take care to
3648 set remote_desc to NULL to avoid closing remote_desc
3650 serial_close (remote_desc
);
3652 perror_with_name (name
);
3656 serial_raw (remote_desc
);
3658 /* If there is something sitting in the buffer we might take it as a
3659 response to a command, which would be bad. */
3660 serial_flush_input (remote_desc
);
3664 puts_filtered ("Remote debugging using ");
3665 puts_filtered (name
);
3666 puts_filtered ("\n");
3668 push_target (target
); /* Switch to using remote target now. */
3670 /* Register extra event sources in the event loop. */
3671 remote_async_inferior_event_token
3672 = create_async_event_handler (remote_async_inferior_event_handler
,
3674 remote_async_get_pending_events_token
3675 = create_async_event_handler (remote_async_get_pending_events_handler
,
3678 /* Reset the target state; these things will be queried either by
3679 remote_query_supported or as they are needed. */
3680 init_all_packet_configs ();
3681 rs
->cached_wait_status
= 0;
3682 rs
->explicit_packet_size
= 0;
3684 rs
->multi_process_aware
= 0;
3685 rs
->extended
= extended_p
;
3686 rs
->non_stop_aware
= 0;
3687 rs
->waiting_for_stop_reply
= 0;
3688 rs
->ctrlc_pending_p
= 0;
3690 general_thread
= not_sent_ptid
;
3691 continue_thread
= not_sent_ptid
;
3693 /* Probe for ability to use "ThreadInfo" query, as required. */
3694 use_threadinfo_query
= 1;
3695 use_threadextra_query
= 1;
3697 if (target_async_permitted
)
3699 /* With this target we start out by owning the terminal. */
3700 remote_async_terminal_ours_p
= 1;
3702 /* FIXME: cagney/1999-09-23: During the initial connection it is
3703 assumed that the target is already ready and able to respond to
3704 requests. Unfortunately remote_start_remote() eventually calls
3705 wait_for_inferior() with no timeout. wait_forever_enabled_p gets
3706 around this. Eventually a mechanism that allows
3707 wait_for_inferior() to expect/get timeouts will be
3709 wait_forever_enabled_p
= 0;
3712 /* First delete any symbols previously loaded from shared libraries. */
3713 no_shared_libraries (NULL
, 0);
3716 init_thread_list ();
3718 /* Start the remote connection. If error() or QUIT, discard this
3719 target (we'd otherwise be in an inconsistent state) and then
3720 propogate the error on up the exception chain. This ensures that
3721 the caller doesn't stumble along blindly assuming that the
3722 function succeeded. The CLI doesn't have this problem but other
3723 UI's, such as MI do.
3725 FIXME: cagney/2002-05-19: Instead of re-throwing the exception,
3726 this function should return an error indication letting the
3727 caller restore the previous state. Unfortunately the command
3728 ``target remote'' is directly wired to this function making that
3729 impossible. On a positive note, the CLI side of this problem has
3730 been fixed - the function set_cmd_context() makes it possible for
3731 all the ``target ....'' commands to share a common callback
3732 function. See cli-dump.c. */
3734 struct gdb_exception ex
;
3735 struct start_remote_args args
;
3737 args
.from_tty
= from_tty
;
3738 args
.target
= target
;
3739 args
.extended_p
= extended_p
;
3741 ex
= catch_exception (uiout
, remote_start_remote
, &args
, RETURN_MASK_ALL
);
3744 /* Pop the partially set up target - unless something else did
3745 already before throwing the exception. */
3746 if (remote_desc
!= NULL
)
3748 if (target_async_permitted
)
3749 wait_forever_enabled_p
= 1;
3750 throw_exception (ex
);
3754 if (target_async_permitted
)
3755 wait_forever_enabled_p
= 1;
3758 /* This takes a program previously attached to and detaches it. After
3759 this is done, GDB can be used to debug some other program. We
3760 better not have left any breakpoints in the target program or it'll
3761 die when it hits one. */
3764 remote_detach_1 (char *args
, int from_tty
, int extended
)
3766 int pid
= ptid_get_pid (inferior_ptid
);
3767 struct remote_state
*rs
= get_remote_state ();
3770 error (_("Argument given to \"detach\" when remotely debugging."));
3772 if (!target_has_execution
)
3773 error (_("No process to detach from."));
3775 /* Tell the remote target to detach. */
3776 if (remote_multi_process_p (rs
))
3777 sprintf (rs
->buf
, "D;%x", pid
);
3779 strcpy (rs
->buf
, "D");
3782 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3784 if (rs
->buf
[0] == 'O' && rs
->buf
[1] == 'K')
3786 else if (rs
->buf
[0] == '\0')
3787 error (_("Remote doesn't know how to detach"));
3789 error (_("Can't detach process."));
3793 if (remote_multi_process_p (rs
))
3794 printf_filtered (_("Detached from remote %s.\n"),
3795 target_pid_to_str (pid_to_ptid (pid
)));
3799 puts_filtered (_("Detached from remote process.\n"));
3801 puts_filtered (_("Ending remote debugging.\n"));
3805 discard_pending_stop_replies (pid
);
3806 target_mourn_inferior ();
3810 remote_detach (struct target_ops
*ops
, char *args
, int from_tty
)
3812 remote_detach_1 (args
, from_tty
, 0);
3816 extended_remote_detach (struct target_ops
*ops
, char *args
, int from_tty
)
3818 remote_detach_1 (args
, from_tty
, 1);
3821 /* Same as remote_detach, but don't send the "D" packet; just disconnect. */
3824 remote_disconnect (struct target_ops
*target
, char *args
, int from_tty
)
3827 error (_("Argument given to \"disconnect\" when remotely debugging."));
3829 /* Make sure we unpush even the extended remote targets; mourn
3830 won't do it. So call remote_mourn_1 directly instead of
3831 target_mourn_inferior. */
3832 remote_mourn_1 (target
);
3835 puts_filtered ("Ending remote debugging.\n");
3838 /* Attach to the process specified by ARGS. If FROM_TTY is non-zero,
3839 be chatty about it. */
3842 extended_remote_attach_1 (struct target_ops
*target
, char *args
, int from_tty
)
3844 struct remote_state
*rs
= get_remote_state ();
3847 char *wait_status
= NULL
;
3850 error_no_arg (_("process-id to attach"));
3853 pid
= strtol (args
, &dummy
, 0);
3854 /* Some targets don't set errno on errors, grrr! */
3855 if (pid
== 0 && args
== dummy
)
3856 error (_("Illegal process-id: %s."), args
);
3858 if (remote_protocol_packets
[PACKET_vAttach
].support
== PACKET_DISABLE
)
3859 error (_("This target does not support attaching to a process"));
3861 sprintf (rs
->buf
, "vAttach;%x", pid
);
3863 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3865 if (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_vAttach
]) == PACKET_OK
)
3868 printf_unfiltered (_("Attached to %s\n"),
3869 target_pid_to_str (pid_to_ptid (pid
)));
3873 /* Save the reply for later. */
3874 wait_status
= alloca (strlen (rs
->buf
) + 1);
3875 strcpy (wait_status
, rs
->buf
);
3877 else if (strcmp (rs
->buf
, "OK") != 0)
3878 error (_("Attaching to %s failed with: %s"),
3879 target_pid_to_str (pid_to_ptid (pid
)),
3882 else if (remote_protocol_packets
[PACKET_vAttach
].support
== PACKET_DISABLE
)
3883 error (_("This target does not support attaching to a process"));
3885 error (_("Attaching to %s failed"),
3886 target_pid_to_str (pid_to_ptid (pid
)));
3888 set_current_inferior (remote_add_inferior (pid
, 1));
3890 inferior_ptid
= pid_to_ptid (pid
);
3894 struct thread_info
*thread
;
3896 /* Get list of threads. */
3897 remote_threads_info (target
);
3899 thread
= first_thread_of_process (pid
);
3901 inferior_ptid
= thread
->ptid
;
3903 inferior_ptid
= pid_to_ptid (pid
);
3905 /* Invalidate our notion of the remote current thread. */
3906 record_currthread (minus_one_ptid
);
3910 /* Now, if we have thread information, update inferior_ptid. */
3911 inferior_ptid
= remote_current_thread (inferior_ptid
);
3913 /* Add the main thread to the thread list. */
3914 add_thread_silent (inferior_ptid
);
3917 /* Next, if the target can specify a description, read it. We do
3918 this before anything involving memory or registers. */
3919 target_find_description ();
3923 /* Use the previously fetched status. */
3924 gdb_assert (wait_status
!= NULL
);
3926 if (target_can_async_p ())
3928 struct stop_reply
*stop_reply
;
3929 struct cleanup
*old_chain
;
3931 stop_reply
= stop_reply_xmalloc ();
3932 old_chain
= make_cleanup (do_stop_reply_xfree
, stop_reply
);
3933 remote_parse_stop_reply (wait_status
, stop_reply
);
3934 discard_cleanups (old_chain
);
3935 push_stop_reply (stop_reply
);
3937 target_async (inferior_event_handler
, 0);
3941 gdb_assert (wait_status
!= NULL
);
3942 strcpy (rs
->buf
, wait_status
);
3943 rs
->cached_wait_status
= 1;
3947 gdb_assert (wait_status
== NULL
);
3951 extended_remote_attach (struct target_ops
*ops
, char *args
, int from_tty
)
3953 extended_remote_attach_1 (ops
, args
, from_tty
);
3956 /* Convert hex digit A to a number. */
3961 if (a
>= '0' && a
<= '9')
3963 else if (a
>= 'a' && a
<= 'f')
3964 return a
- 'a' + 10;
3965 else if (a
>= 'A' && a
<= 'F')
3966 return a
- 'A' + 10;
3968 error (_("Reply contains invalid hex digit %d"), a
);
3972 hex2bin (const char *hex
, gdb_byte
*bin
, int count
)
3976 for (i
= 0; i
< count
; i
++)
3978 if (hex
[0] == 0 || hex
[1] == 0)
3980 /* Hex string is short, or of uneven length.
3981 Return the count that has been converted so far. */
3984 *bin
++ = fromhex (hex
[0]) * 16 + fromhex (hex
[1]);
3990 /* Convert number NIB to a hex digit. */
3998 return 'a' + nib
- 10;
4002 bin2hex (const gdb_byte
*bin
, char *hex
, int count
)
4005 /* May use a length, or a nul-terminated string as input. */
4007 count
= strlen ((char *) bin
);
4009 for (i
= 0; i
< count
; i
++)
4011 *hex
++ = tohex ((*bin
>> 4) & 0xf);
4012 *hex
++ = tohex (*bin
++ & 0xf);
4018 /* Check for the availability of vCont. This function should also check
4022 remote_vcont_probe (struct remote_state
*rs
)
4026 strcpy (rs
->buf
, "vCont?");
4028 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4031 /* Make sure that the features we assume are supported. */
4032 if (strncmp (buf
, "vCont", 5) == 0)
4035 int support_s
, support_S
, support_c
, support_C
;
4041 rs
->support_vCont_t
= 0;
4042 while (p
&& *p
== ';')
4045 if (*p
== 's' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4047 else if (*p
== 'S' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4049 else if (*p
== 'c' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4051 else if (*p
== 'C' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4053 else if (*p
== 't' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4054 rs
->support_vCont_t
= 1;
4056 p
= strchr (p
, ';');
4059 /* If s, S, c, and C are not all supported, we can't use vCont. Clearing
4060 BUF will make packet_ok disable the packet. */
4061 if (!support_s
|| !support_S
|| !support_c
|| !support_C
)
4065 packet_ok (buf
, &remote_protocol_packets
[PACKET_vCont
]);
4068 /* Helper function for building "vCont" resumptions. Write a
4069 resumption to P. ENDP points to one-passed-the-end of the buffer
4070 we're allowed to write to. Returns BUF+CHARACTERS_WRITTEN. The
4071 thread to be resumed is PTID; STEP and SIGGNAL indicate whether the
4072 resumed thread should be single-stepped and/or signalled. If PTID
4073 equals minus_one_ptid, then all threads are resumed; if PTID
4074 represents a process, then all threads of the process are resumed;
4075 the thread to be stepped and/or signalled is given in the global
4079 append_resumption (char *p
, char *endp
,
4080 ptid_t ptid
, int step
, enum target_signal siggnal
)
4082 struct remote_state
*rs
= get_remote_state ();
4084 if (step
&& siggnal
!= TARGET_SIGNAL_0
)
4085 p
+= xsnprintf (p
, endp
- p
, ";S%02x", siggnal
);
4087 p
+= xsnprintf (p
, endp
- p
, ";s");
4088 else if (siggnal
!= TARGET_SIGNAL_0
)
4089 p
+= xsnprintf (p
, endp
- p
, ";C%02x", siggnal
);
4091 p
+= xsnprintf (p
, endp
- p
, ";c");
4093 if (remote_multi_process_p (rs
) && ptid_is_pid (ptid
))
4097 /* All (-1) threads of process. */
4098 nptid
= ptid_build (ptid_get_pid (ptid
), 0, -1);
4100 p
+= xsnprintf (p
, endp
- p
, ":");
4101 p
= write_ptid (p
, endp
, nptid
);
4103 else if (!ptid_equal (ptid
, minus_one_ptid
))
4105 p
+= xsnprintf (p
, endp
- p
, ":");
4106 p
= write_ptid (p
, endp
, ptid
);
4112 /* Resume the remote inferior by using a "vCont" packet. The thread
4113 to be resumed is PTID; STEP and SIGGNAL indicate whether the
4114 resumed thread should be single-stepped and/or signalled. If PTID
4115 equals minus_one_ptid, then all threads are resumed; the thread to
4116 be stepped and/or signalled is given in the global INFERIOR_PTID.
4117 This function returns non-zero iff it resumes the inferior.
4119 This function issues a strict subset of all possible vCont commands at the
4123 remote_vcont_resume (ptid_t ptid
, int step
, enum target_signal siggnal
)
4125 struct remote_state
*rs
= get_remote_state ();
4129 if (remote_protocol_packets
[PACKET_vCont
].support
== PACKET_SUPPORT_UNKNOWN
)
4130 remote_vcont_probe (rs
);
4132 if (remote_protocol_packets
[PACKET_vCont
].support
== PACKET_DISABLE
)
4136 endp
= rs
->buf
+ get_remote_packet_size ();
4138 /* If we could generate a wider range of packets, we'd have to worry
4139 about overflowing BUF. Should there be a generic
4140 "multi-part-packet" packet? */
4142 p
+= xsnprintf (p
, endp
- p
, "vCont");
4144 if (ptid_equal (ptid
, magic_null_ptid
))
4146 /* MAGIC_NULL_PTID means that we don't have any active threads,
4147 so we don't have any TID numbers the inferior will
4148 understand. Make sure to only send forms that do not specify
4150 p
= append_resumption (p
, endp
, minus_one_ptid
, step
, siggnal
);
4152 else if (ptid_equal (ptid
, minus_one_ptid
) || ptid_is_pid (ptid
))
4154 /* Resume all threads (of all processes, or of a single
4155 process), with preference for INFERIOR_PTID. This assumes
4156 inferior_ptid belongs to the set of all threads we are about
4158 if (step
|| siggnal
!= TARGET_SIGNAL_0
)
4160 /* Step inferior_ptid, with or without signal. */
4161 p
= append_resumption (p
, endp
, inferior_ptid
, step
, siggnal
);
4164 /* And continue others without a signal. */
4165 p
= append_resumption (p
, endp
, ptid
, /*step=*/ 0, TARGET_SIGNAL_0
);
4169 /* Scheduler locking; resume only PTID. */
4170 p
= append_resumption (p
, endp
, ptid
, step
, siggnal
);
4173 gdb_assert (strlen (rs
->buf
) < get_remote_packet_size ());
4178 /* In non-stop, the stub replies to vCont with "OK". The stop
4179 reply will be reported asynchronously by means of a `%Stop'
4181 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4182 if (strcmp (rs
->buf
, "OK") != 0)
4183 error (_("Unexpected vCont reply in non-stop mode: %s"), rs
->buf
);
4189 /* Tell the remote machine to resume. */
4191 static enum target_signal last_sent_signal
= TARGET_SIGNAL_0
;
4193 static int last_sent_step
;
4196 remote_resume (struct target_ops
*ops
,
4197 ptid_t ptid
, int step
, enum target_signal siggnal
)
4199 struct remote_state
*rs
= get_remote_state ();
4202 last_sent_signal
= siggnal
;
4203 last_sent_step
= step
;
4205 /* Update the inferior on signals to silently pass, if they've changed. */
4206 remote_pass_signals ();
4208 /* The vCont packet doesn't need to specify threads via Hc. */
4209 /* No reverse support (yet) for vCont. */
4210 if (execution_direction
!= EXEC_REVERSE
)
4211 if (remote_vcont_resume (ptid
, step
, siggnal
))
4214 /* All other supported resume packets do use Hc, so set the continue
4216 if (ptid_equal (ptid
, minus_one_ptid
))
4217 set_continue_thread (any_thread_ptid
);
4219 set_continue_thread (ptid
);
4222 if (execution_direction
== EXEC_REVERSE
)
4224 /* We don't pass signals to the target in reverse exec mode. */
4225 if (info_verbose
&& siggnal
!= TARGET_SIGNAL_0
)
4226 warning (" - Can't pass signal %d to target in reverse: ignored.\n",
4230 && remote_protocol_packets
[PACKET_bs
].support
== PACKET_DISABLE
)
4231 error (_("Remote reverse-step not supported."));
4233 && remote_protocol_packets
[PACKET_bc
].support
== PACKET_DISABLE
)
4234 error (_("Remote reverse-continue not supported."));
4236 strcpy (buf
, step
? "bs" : "bc");
4238 else if (siggnal
!= TARGET_SIGNAL_0
)
4240 buf
[0] = step
? 'S' : 'C';
4241 buf
[1] = tohex (((int) siggnal
>> 4) & 0xf);
4242 buf
[2] = tohex (((int) siggnal
) & 0xf);
4246 strcpy (buf
, step
? "s" : "c");
4251 /* We are about to start executing the inferior, let's register it
4252 with the event loop. NOTE: this is the one place where all the
4253 execution commands end up. We could alternatively do this in each
4254 of the execution commands in infcmd.c. */
4255 /* FIXME: ezannoni 1999-09-28: We may need to move this out of here
4256 into infcmd.c in order to allow inferior function calls to work
4257 NOT asynchronously. */
4258 if (target_can_async_p ())
4259 target_async (inferior_event_handler
, 0);
4261 /* We've just told the target to resume. The remote server will
4262 wait for the inferior to stop, and then send a stop reply. In
4263 the mean time, we can't start another command/query ourselves
4264 because the stub wouldn't be ready to process it. This applies
4265 only to the base all-stop protocol, however. In non-stop (which
4266 only supports vCont), the stub replies with an "OK", and is
4267 immediate able to process further serial input. */
4269 rs
->waiting_for_stop_reply
= 1;
4273 /* Set up the signal handler for SIGINT, while the target is
4274 executing, ovewriting the 'regular' SIGINT signal handler. */
4276 initialize_sigint_signal_handler (void)
4278 signal (SIGINT
, handle_remote_sigint
);
4281 /* Signal handler for SIGINT, while the target is executing. */
4283 handle_remote_sigint (int sig
)
4285 signal (sig
, handle_remote_sigint_twice
);
4286 mark_async_signal_handler_wrapper (sigint_remote_token
);
4289 /* Signal handler for SIGINT, installed after SIGINT has already been
4290 sent once. It will take effect the second time that the user sends
4293 handle_remote_sigint_twice (int sig
)
4295 signal (sig
, handle_remote_sigint
);
4296 mark_async_signal_handler_wrapper (sigint_remote_twice_token
);
4299 /* Perform the real interruption of the target execution, in response
4302 async_remote_interrupt (gdb_client_data arg
)
4305 fprintf_unfiltered (gdb_stdlog
, "remote_interrupt called\n");
4307 target_stop (inferior_ptid
);
4310 /* Perform interrupt, if the first attempt did not succeed. Just give
4311 up on the target alltogether. */
4313 async_remote_interrupt_twice (gdb_client_data arg
)
4316 fprintf_unfiltered (gdb_stdlog
, "remote_interrupt_twice called\n");
4321 /* Reinstall the usual SIGINT handlers, after the target has
4324 cleanup_sigint_signal_handler (void *dummy
)
4326 signal (SIGINT
, handle_sigint
);
4329 /* Send ^C to target to halt it. Target will respond, and send us a
4331 static void (*ofunc
) (int);
4333 /* The command line interface's stop routine. This function is installed
4334 as a signal handler for SIGINT. The first time a user requests a
4335 stop, we call remote_stop to send a break or ^C. If there is no
4336 response from the target (it didn't stop when the user requested it),
4337 we ask the user if he'd like to detach from the target. */
4339 remote_interrupt (int signo
)
4341 /* If this doesn't work, try more severe steps. */
4342 signal (signo
, remote_interrupt_twice
);
4344 gdb_call_async_signal_handler (sigint_remote_token
, 1);
4347 /* The user typed ^C twice. */
4350 remote_interrupt_twice (int signo
)
4352 signal (signo
, ofunc
);
4353 gdb_call_async_signal_handler (sigint_remote_twice_token
, 1);
4354 signal (signo
, remote_interrupt
);
4357 /* Non-stop version of target_stop. Uses `vCont;t' to stop a remote
4358 thread, all threads of a remote process, or all threads of all
4362 remote_stop_ns (ptid_t ptid
)
4364 struct remote_state
*rs
= get_remote_state ();
4366 char *endp
= rs
->buf
+ get_remote_packet_size ();
4368 if (remote_protocol_packets
[PACKET_vCont
].support
== PACKET_SUPPORT_UNKNOWN
)
4369 remote_vcont_probe (rs
);
4371 if (!rs
->support_vCont_t
)
4372 error (_("Remote server does not support stopping threads"));
4374 if (ptid_equal (ptid
, minus_one_ptid
)
4375 || (!remote_multi_process_p (rs
) && ptid_is_pid (ptid
)))
4376 p
+= xsnprintf (p
, endp
- p
, "vCont;t");
4381 p
+= xsnprintf (p
, endp
- p
, "vCont;t:");
4383 if (ptid_is_pid (ptid
))
4384 /* All (-1) threads of process. */
4385 nptid
= ptid_build (ptid_get_pid (ptid
), 0, -1);
4388 /* Small optimization: if we already have a stop reply for
4389 this thread, no use in telling the stub we want this
4391 if (peek_stop_reply (ptid
))
4397 p
= write_ptid (p
, endp
, nptid
);
4400 /* In non-stop, we get an immediate OK reply. The stop reply will
4401 come in asynchronously by notification. */
4403 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4404 if (strcmp (rs
->buf
, "OK") != 0)
4405 error (_("Stopping %s failed: %s"), target_pid_to_str (ptid
), rs
->buf
);
4408 /* All-stop version of target_stop. Sends a break or a ^C to stop the
4409 remote target. It is undefined which thread of which process
4410 reports the stop. */
4413 remote_stop_as (ptid_t ptid
)
4415 struct remote_state
*rs
= get_remote_state ();
4417 rs
->ctrlc_pending_p
= 1;
4419 /* If the inferior is stopped already, but the core didn't know
4420 about it yet, just ignore the request. The cached wait status
4421 will be collected in remote_wait. */
4422 if (rs
->cached_wait_status
)
4425 /* Send interrupt_sequence to remote target. */
4426 send_interrupt_sequence ();
4429 /* This is the generic stop called via the target vector. When a target
4430 interrupt is requested, either by the command line or the GUI, we
4431 will eventually end up here. */
4434 remote_stop (ptid_t ptid
)
4437 fprintf_unfiltered (gdb_stdlog
, "remote_stop called\n");
4440 remote_stop_ns (ptid
);
4442 remote_stop_as (ptid
);
4445 /* Ask the user what to do when an interrupt is received. */
4448 interrupt_query (void)
4450 target_terminal_ours ();
4452 if (target_can_async_p ())
4454 signal (SIGINT
, handle_sigint
);
4455 deprecated_throw_reason (RETURN_QUIT
);
4459 if (query (_("Interrupted while waiting for the program.\n\
4460 Give up (and stop debugging it)? ")))
4463 deprecated_throw_reason (RETURN_QUIT
);
4467 target_terminal_inferior ();
4470 /* Enable/disable target terminal ownership. Most targets can use
4471 terminal groups to control terminal ownership. Remote targets are
4472 different in that explicit transfer of ownership to/from GDB/target
4476 remote_terminal_inferior (void)
4478 if (!target_async_permitted
)
4479 /* Nothing to do. */
4482 /* FIXME: cagney/1999-09-27: Make calls to target_terminal_*()
4483 idempotent. The event-loop GDB talking to an asynchronous target
4484 with a synchronous command calls this function from both
4485 event-top.c and infrun.c/infcmd.c. Once GDB stops trying to
4486 transfer the terminal to the target when it shouldn't this guard
4488 if (!remote_async_terminal_ours_p
)
4490 delete_file_handler (input_fd
);
4491 remote_async_terminal_ours_p
= 0;
4492 initialize_sigint_signal_handler ();
4493 /* NOTE: At this point we could also register our selves as the
4494 recipient of all input. Any characters typed could then be
4495 passed on down to the target. */
4499 remote_terminal_ours (void)
4501 if (!target_async_permitted
)
4502 /* Nothing to do. */
4505 /* See FIXME in remote_terminal_inferior. */
4506 if (remote_async_terminal_ours_p
)
4508 cleanup_sigint_signal_handler (NULL
);
4509 add_file_handler (input_fd
, stdin_event_handler
, 0);
4510 remote_async_terminal_ours_p
= 1;
4514 remote_console_output (char *msg
)
4518 for (p
= msg
; p
[0] && p
[1]; p
+= 2)
4521 char c
= fromhex (p
[0]) * 16 + fromhex (p
[1]);
4524 fputs_unfiltered (tb
, gdb_stdtarg
);
4526 gdb_flush (gdb_stdtarg
);
4529 typedef struct cached_reg
4532 gdb_byte data
[MAX_REGISTER_SIZE
];
4535 DEF_VEC_O(cached_reg_t
);
4539 struct stop_reply
*next
;
4543 struct target_waitstatus ws
;
4545 VEC(cached_reg_t
) *regcache
;
4547 int stopped_by_watchpoint_p
;
4548 CORE_ADDR watch_data_address
;
4556 /* The list of already fetched and acknowledged stop events. */
4557 static struct stop_reply
*stop_reply_queue
;
4559 static struct stop_reply
*
4560 stop_reply_xmalloc (void)
4562 struct stop_reply
*r
= XMALLOC (struct stop_reply
);
4568 stop_reply_xfree (struct stop_reply
*r
)
4572 VEC_free (cached_reg_t
, r
->regcache
);
4577 /* Discard all pending stop replies of inferior PID. If PID is -1,
4578 discard everything. */
4581 discard_pending_stop_replies (int pid
)
4583 struct stop_reply
*prev
= NULL
, *reply
, *next
;
4585 /* Discard the in-flight notification. */
4586 if (pending_stop_reply
!= NULL
4588 || ptid_get_pid (pending_stop_reply
->ptid
) == pid
))
4590 stop_reply_xfree (pending_stop_reply
);
4591 pending_stop_reply
= NULL
;
4594 /* Discard the stop replies we have already pulled with
4596 for (reply
= stop_reply_queue
; reply
; reply
= next
)
4600 || ptid_get_pid (reply
->ptid
) == pid
)
4602 if (reply
== stop_reply_queue
)
4603 stop_reply_queue
= reply
->next
;
4605 prev
->next
= reply
->next
;
4607 stop_reply_xfree (reply
);
4614 /* Cleanup wrapper. */
4617 do_stop_reply_xfree (void *arg
)
4619 struct stop_reply
*r
= arg
;
4620 stop_reply_xfree (r
);
4623 /* Look for a queued stop reply belonging to PTID. If one is found,
4624 remove it from the queue, and return it. Returns NULL if none is
4625 found. If there are still queued events left to process, tell the
4626 event loop to get back to target_wait soon. */
4628 static struct stop_reply
*
4629 queued_stop_reply (ptid_t ptid
)
4631 struct stop_reply
*it
, *prev
;
4632 struct stop_reply head
;
4634 head
.next
= stop_reply_queue
;
4639 if (!ptid_equal (ptid
, minus_one_ptid
))
4640 for (; it
; prev
= it
, it
= it
->next
)
4641 if (ptid_equal (ptid
, it
->ptid
))
4646 prev
->next
= it
->next
;
4650 stop_reply_queue
= head
.next
;
4652 if (stop_reply_queue
)
4653 /* There's still at least an event left. */
4654 mark_async_event_handler (remote_async_inferior_event_token
);
4659 /* Push a fully parsed stop reply in the stop reply queue. Since we
4660 know that we now have at least one queued event left to pass to the
4661 core side, tell the event loop to get back to target_wait soon. */
4664 push_stop_reply (struct stop_reply
*new_event
)
4666 struct stop_reply
*event
;
4668 if (stop_reply_queue
)
4670 for (event
= stop_reply_queue
;
4671 event
&& event
->next
;
4672 event
= event
->next
)
4675 event
->next
= new_event
;
4678 stop_reply_queue
= new_event
;
4680 mark_async_event_handler (remote_async_inferior_event_token
);
4683 /* Returns true if we have a stop reply for PTID. */
4686 peek_stop_reply (ptid_t ptid
)
4688 struct stop_reply
*it
;
4690 for (it
= stop_reply_queue
; it
; it
= it
->next
)
4691 if (ptid_equal (ptid
, it
->ptid
))
4693 if (it
->ws
.kind
== TARGET_WAITKIND_STOPPED
)
4700 /* Parse the stop reply in BUF. Either the function succeeds, and the
4701 result is stored in EVENT, or throws an error. */
4704 remote_parse_stop_reply (char *buf
, struct stop_reply
*event
)
4706 struct remote_arch_state
*rsa
= get_remote_arch_state ();
4710 event
->ptid
= null_ptid
;
4711 event
->ws
.kind
= TARGET_WAITKIND_IGNORE
;
4712 event
->ws
.value
.integer
= 0;
4713 event
->solibs_changed
= 0;
4714 event
->replay_event
= 0;
4715 event
->stopped_by_watchpoint_p
= 0;
4716 event
->regcache
= NULL
;
4721 case 'T': /* Status with PC, SP, FP, ... */
4722 /* Expedited reply, containing Signal, {regno, reg} repeat. */
4723 /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where
4725 n... = register number
4726 r... = register contents
4729 p
= &buf
[3]; /* after Txx */
4737 /* If the packet contains a register number, save it in
4738 pnum and set p1 to point to the character following it.
4739 Otherwise p1 points to p. */
4741 /* If this packet is an awatch packet, don't parse the 'a'
4742 as a register number. */
4744 if (strncmp (p
, "awatch", strlen("awatch")) != 0
4745 && strncmp (p
, "core", strlen ("core") != 0))
4747 /* Read the ``P'' register number. */
4748 pnum
= strtol (p
, &p_temp
, 16);
4754 if (p1
== p
) /* No register number present here. */
4756 p1
= strchr (p
, ':');
4758 error (_("Malformed packet(a) (missing colon): %s\n\
4761 if (strncmp (p
, "thread", p1
- p
) == 0)
4762 event
->ptid
= read_ptid (++p1
, &p
);
4763 else if ((strncmp (p
, "watch", p1
- p
) == 0)
4764 || (strncmp (p
, "rwatch", p1
- p
) == 0)
4765 || (strncmp (p
, "awatch", p1
- p
) == 0))
4767 event
->stopped_by_watchpoint_p
= 1;
4768 p
= unpack_varlen_hex (++p1
, &addr
);
4769 event
->watch_data_address
= (CORE_ADDR
) addr
;
4771 else if (strncmp (p
, "library", p1
- p
) == 0)
4775 while (*p_temp
&& *p_temp
!= ';')
4778 event
->solibs_changed
= 1;
4781 else if (strncmp (p
, "replaylog", p1
- p
) == 0)
4783 /* NO_HISTORY event.
4784 p1 will indicate "begin" or "end", but
4785 it makes no difference for now, so ignore it. */
4786 event
->replay_event
= 1;
4787 p_temp
= strchr (p1
+ 1, ';');
4791 else if (strncmp (p
, "core", p1
- p
) == 0)
4794 p
= unpack_varlen_hex (++p1
, &c
);
4799 /* Silently skip unknown optional info. */
4800 p_temp
= strchr (p1
+ 1, ';');
4807 struct packet_reg
*reg
= packet_reg_from_pnum (rsa
, pnum
);
4808 cached_reg_t cached_reg
;
4813 error (_("Malformed packet(b) (missing colon): %s\n\
4819 error (_("Remote sent bad register number %s: %s\n\
4821 phex_nz (pnum
, 0), p
, buf
);
4823 cached_reg
.num
= reg
->regnum
;
4825 fieldsize
= hex2bin (p
, cached_reg
.data
,
4826 register_size (target_gdbarch
,
4829 if (fieldsize
< register_size (target_gdbarch
,
4831 warning (_("Remote reply is too short: %s"), buf
);
4833 VEC_safe_push (cached_reg_t
, event
->regcache
, &cached_reg
);
4837 error (_("Remote register badly formatted: %s\nhere: %s"),
4842 case 'S': /* Old style status, just signal only. */
4843 if (event
->solibs_changed
)
4844 event
->ws
.kind
= TARGET_WAITKIND_LOADED
;
4845 else if (event
->replay_event
)
4846 event
->ws
.kind
= TARGET_WAITKIND_NO_HISTORY
;
4849 event
->ws
.kind
= TARGET_WAITKIND_STOPPED
;
4850 event
->ws
.value
.sig
= (enum target_signal
)
4851 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
4854 case 'W': /* Target exited. */
4861 /* GDB used to accept only 2 hex chars here. Stubs should
4862 only send more if they detect GDB supports multi-process
4864 p
= unpack_varlen_hex (&buf
[1], &value
);
4868 /* The remote process exited. */
4869 event
->ws
.kind
= TARGET_WAITKIND_EXITED
;
4870 event
->ws
.value
.integer
= value
;
4874 /* The remote process exited with a signal. */
4875 event
->ws
.kind
= TARGET_WAITKIND_SIGNALLED
;
4876 event
->ws
.value
.sig
= (enum target_signal
) value
;
4879 /* If no process is specified, assume inferior_ptid. */
4880 pid
= ptid_get_pid (inferior_ptid
);
4889 else if (strncmp (p
,
4890 "process:", sizeof ("process:") - 1) == 0)
4893 p
+= sizeof ("process:") - 1;
4894 unpack_varlen_hex (p
, &upid
);
4898 error (_("unknown stop reply packet: %s"), buf
);
4901 error (_("unknown stop reply packet: %s"), buf
);
4902 event
->ptid
= pid_to_ptid (pid
);
4907 if (non_stop
&& ptid_equal (event
->ptid
, null_ptid
))
4908 error (_("No process or thread specified in stop reply: %s"), buf
);
4911 /* When the stub wants to tell GDB about a new stop reply, it sends a
4912 stop notification (%Stop). Those can come it at any time, hence,
4913 we have to make sure that any pending putpkt/getpkt sequence we're
4914 making is finished, before querying the stub for more events with
4915 vStopped. E.g., if we started a vStopped sequence immediatelly
4916 upon receiving the %Stop notification, something like this could
4924 1.6) <-- (registers reply to step #1.3)
4926 Obviously, the reply in step #1.6 would be unexpected to a vStopped
4929 To solve this, whenever we parse a %Stop notification sucessfully,
4930 we mark the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN, and carry on
4931 doing whatever we were doing:
4937 <GDB marks the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN>
4938 2.5) <-- (registers reply to step #2.3)
4940 Eventualy after step #2.5, we return to the event loop, which
4941 notices there's an event on the
4942 REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN event and calls the
4943 associated callback --- the function below. At this point, we're
4944 always safe to start a vStopped sequence. :
4947 2.7) <-- T05 thread:2
4953 remote_get_pending_stop_replies (void)
4955 struct remote_state
*rs
= get_remote_state ();
4957 if (pending_stop_reply
)
4960 putpkt ("vStopped");
4962 /* Now we can rely on it. */
4963 push_stop_reply (pending_stop_reply
);
4964 pending_stop_reply
= NULL
;
4968 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4969 if (strcmp (rs
->buf
, "OK") == 0)
4973 struct cleanup
*old_chain
;
4974 struct stop_reply
*stop_reply
= stop_reply_xmalloc ();
4976 old_chain
= make_cleanup (do_stop_reply_xfree
, stop_reply
);
4977 remote_parse_stop_reply (rs
->buf
, stop_reply
);
4980 putpkt ("vStopped");
4982 if (stop_reply
->ws
.kind
!= TARGET_WAITKIND_IGNORE
)
4984 /* Now we can rely on it. */
4985 discard_cleanups (old_chain
);
4986 push_stop_reply (stop_reply
);
4989 /* We got an unknown stop reply. */
4990 do_cleanups (old_chain
);
4997 /* Called when it is decided that STOP_REPLY holds the info of the
4998 event that is to be returned to the core. This function always
4999 destroys STOP_REPLY. */
5002 process_stop_reply (struct stop_reply
*stop_reply
,
5003 struct target_waitstatus
*status
)
5006 struct thread_info
*info
;
5008 *status
= stop_reply
->ws
;
5009 ptid
= stop_reply
->ptid
;
5011 /* If no thread/process was reported by the stub, assume the current
5013 if (ptid_equal (ptid
, null_ptid
))
5014 ptid
= inferior_ptid
;
5016 if (status
->kind
!= TARGET_WAITKIND_EXITED
5017 && status
->kind
!= TARGET_WAITKIND_SIGNALLED
)
5019 /* Expedited registers. */
5020 if (stop_reply
->regcache
)
5022 struct regcache
*regcache
5023 = get_thread_arch_regcache (ptid
, target_gdbarch
);
5028 VEC_iterate(cached_reg_t
, stop_reply
->regcache
, ix
, reg
);
5030 regcache_raw_supply (regcache
, reg
->num
, reg
->data
);
5031 VEC_free (cached_reg_t
, stop_reply
->regcache
);
5034 remote_stopped_by_watchpoint_p
= stop_reply
->stopped_by_watchpoint_p
;
5035 remote_watch_data_address
= stop_reply
->watch_data_address
;
5037 remote_notice_new_inferior (ptid
, 0);
5038 demand_private_info (ptid
)->core
= stop_reply
->core
;
5041 stop_reply_xfree (stop_reply
);
5045 /* The non-stop mode version of target_wait. */
5048 remote_wait_ns (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
5050 struct remote_state
*rs
= get_remote_state ();
5051 struct stop_reply
*stop_reply
;
5054 /* If in non-stop mode, get out of getpkt even if a
5055 notification is received. */
5057 ret
= getpkt_or_notif_sane (&rs
->buf
, &rs
->buf_size
,
5064 case 'E': /* Error of some sort. */
5065 /* We're out of sync with the target now. Did it continue
5066 or not? We can't tell which thread it was in non-stop,
5067 so just ignore this. */
5068 warning (_("Remote failure reply: %s"), rs
->buf
);
5070 case 'O': /* Console output. */
5071 remote_console_output (rs
->buf
+ 1);
5074 warning (_("Invalid remote reply: %s"), rs
->buf
);
5078 /* Acknowledge a pending stop reply that may have arrived in the
5080 if (pending_stop_reply
!= NULL
)
5081 remote_get_pending_stop_replies ();
5083 /* If indeed we noticed a stop reply, we're done. */
5084 stop_reply
= queued_stop_reply (ptid
);
5085 if (stop_reply
!= NULL
)
5086 return process_stop_reply (stop_reply
, status
);
5088 /* Still no event. If we're just polling for an event, then
5089 return to the event loop. */
5090 if (options
& TARGET_WNOHANG
)
5092 status
->kind
= TARGET_WAITKIND_IGNORE
;
5093 return minus_one_ptid
;
5096 /* Otherwise do a blocking wait. */
5097 ret
= getpkt_or_notif_sane (&rs
->buf
, &rs
->buf_size
,
5102 /* Wait until the remote machine stops, then return, storing status in
5103 STATUS just as `wait' would. */
5106 remote_wait_as (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
5108 struct remote_state
*rs
= get_remote_state ();
5109 ptid_t event_ptid
= null_ptid
;
5111 struct stop_reply
*stop_reply
;
5115 status
->kind
= TARGET_WAITKIND_IGNORE
;
5116 status
->value
.integer
= 0;
5118 stop_reply
= queued_stop_reply (ptid
);
5119 if (stop_reply
!= NULL
)
5120 return process_stop_reply (stop_reply
, status
);
5122 if (rs
->cached_wait_status
)
5123 /* Use the cached wait status, but only once. */
5124 rs
->cached_wait_status
= 0;
5129 if (!target_is_async_p ())
5131 ofunc
= signal (SIGINT
, remote_interrupt
);
5132 /* If the user hit C-c before this packet, or between packets,
5133 pretend that it was hit right here. */
5137 remote_interrupt (SIGINT
);
5141 /* FIXME: cagney/1999-09-27: If we're in async mode we should
5142 _never_ wait for ever -> test on target_is_async_p().
5143 However, before we do that we need to ensure that the caller
5144 knows how to take the target into/out of async mode. */
5145 ret
= getpkt_sane (&rs
->buf
, &rs
->buf_size
, wait_forever_enabled_p
);
5146 if (!target_is_async_p ())
5147 signal (SIGINT
, ofunc
);
5152 remote_stopped_by_watchpoint_p
= 0;
5154 /* We got something. */
5155 rs
->waiting_for_stop_reply
= 0;
5157 /* Assume that the target has acknowledged Ctrl-C unless we receive
5158 an 'F' or 'O' packet. */
5159 if (buf
[0] != 'F' && buf
[0] != 'O')
5160 rs
->ctrlc_pending_p
= 0;
5164 case 'E': /* Error of some sort. */
5165 /* We're out of sync with the target now. Did it continue or
5166 not? Not is more likely, so report a stop. */
5167 warning (_("Remote failure reply: %s"), buf
);
5168 status
->kind
= TARGET_WAITKIND_STOPPED
;
5169 status
->value
.sig
= TARGET_SIGNAL_0
;
5171 case 'F': /* File-I/O request. */
5172 remote_fileio_request (buf
, rs
->ctrlc_pending_p
);
5173 rs
->ctrlc_pending_p
= 0;
5175 case 'T': case 'S': case 'X': case 'W':
5177 struct stop_reply
*stop_reply
;
5178 struct cleanup
*old_chain
;
5180 stop_reply
= stop_reply_xmalloc ();
5181 old_chain
= make_cleanup (do_stop_reply_xfree
, stop_reply
);
5182 remote_parse_stop_reply (buf
, stop_reply
);
5183 discard_cleanups (old_chain
);
5184 event_ptid
= process_stop_reply (stop_reply
, status
);
5187 case 'O': /* Console output. */
5188 remote_console_output (buf
+ 1);
5190 /* The target didn't really stop; keep waiting. */
5191 rs
->waiting_for_stop_reply
= 1;
5195 if (last_sent_signal
!= TARGET_SIGNAL_0
)
5197 /* Zero length reply means that we tried 'S' or 'C' and the
5198 remote system doesn't support it. */
5199 target_terminal_ours_for_output ();
5201 ("Can't send signals to this remote system. %s not sent.\n",
5202 target_signal_to_name (last_sent_signal
));
5203 last_sent_signal
= TARGET_SIGNAL_0
;
5204 target_terminal_inferior ();
5206 strcpy ((char *) buf
, last_sent_step
? "s" : "c");
5207 putpkt ((char *) buf
);
5209 /* We just told the target to resume, so a stop reply is in
5211 rs
->waiting_for_stop_reply
= 1;
5214 /* else fallthrough */
5216 warning (_("Invalid remote reply: %s"), buf
);
5218 rs
->waiting_for_stop_reply
= 1;
5222 if (status
->kind
== TARGET_WAITKIND_IGNORE
)
5224 /* Nothing interesting happened. If we're doing a non-blocking
5225 poll, we're done. Otherwise, go back to waiting. */
5226 if (options
& TARGET_WNOHANG
)
5227 return minus_one_ptid
;
5231 else if (status
->kind
!= TARGET_WAITKIND_EXITED
5232 && status
->kind
!= TARGET_WAITKIND_SIGNALLED
)
5234 if (!ptid_equal (event_ptid
, null_ptid
))
5235 record_currthread (event_ptid
);
5237 event_ptid
= inferior_ptid
;
5240 /* A process exit. Invalidate our notion of current thread. */
5241 record_currthread (minus_one_ptid
);
5246 /* Wait until the remote machine stops, then return, storing status in
5247 STATUS just as `wait' would. */
5250 remote_wait (struct target_ops
*ops
,
5251 ptid_t ptid
, struct target_waitstatus
*status
, int options
)
5256 event_ptid
= remote_wait_ns (ptid
, status
, options
);
5258 event_ptid
= remote_wait_as (ptid
, status
, options
);
5260 if (target_can_async_p ())
5262 /* If there are are events left in the queue tell the event loop
5264 if (stop_reply_queue
)
5265 mark_async_event_handler (remote_async_inferior_event_token
);
5271 /* Fetch a single register using a 'p' packet. */
5274 fetch_register_using_p (struct regcache
*regcache
, struct packet_reg
*reg
)
5276 struct remote_state
*rs
= get_remote_state ();
5278 char regp
[MAX_REGISTER_SIZE
];
5281 if (remote_protocol_packets
[PACKET_p
].support
== PACKET_DISABLE
)
5284 if (reg
->pnum
== -1)
5289 p
+= hexnumstr (p
, reg
->pnum
);
5292 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5296 switch (packet_ok (buf
, &remote_protocol_packets
[PACKET_p
]))
5300 case PACKET_UNKNOWN
:
5303 error (_("Could not fetch register \"%s\"; remote failure reply '%s'"),
5304 gdbarch_register_name (get_regcache_arch (regcache
),
5309 /* If this register is unfetchable, tell the regcache. */
5312 regcache_raw_supply (regcache
, reg
->regnum
, NULL
);
5316 /* Otherwise, parse and supply the value. */
5322 error (_("fetch_register_using_p: early buf termination"));
5324 regp
[i
++] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
5327 regcache_raw_supply (regcache
, reg
->regnum
, regp
);
5331 /* Fetch the registers included in the target's 'g' packet. */
5334 send_g_packet (void)
5336 struct remote_state
*rs
= get_remote_state ();
5339 sprintf (rs
->buf
, "g");
5340 remote_send (&rs
->buf
, &rs
->buf_size
);
5342 /* We can get out of synch in various cases. If the first character
5343 in the buffer is not a hex character, assume that has happened
5344 and try to fetch another packet to read. */
5345 while ((rs
->buf
[0] < '0' || rs
->buf
[0] > '9')
5346 && (rs
->buf
[0] < 'A' || rs
->buf
[0] > 'F')
5347 && (rs
->buf
[0] < 'a' || rs
->buf
[0] > 'f')
5348 && rs
->buf
[0] != 'x') /* New: unavailable register value. */
5351 fprintf_unfiltered (gdb_stdlog
,
5352 "Bad register packet; fetching a new packet\n");
5353 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5356 buf_len
= strlen (rs
->buf
);
5358 /* Sanity check the received packet. */
5359 if (buf_len
% 2 != 0)
5360 error (_("Remote 'g' packet reply is of odd length: %s"), rs
->buf
);
5366 process_g_packet (struct regcache
*regcache
)
5368 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
5369 struct remote_state
*rs
= get_remote_state ();
5370 struct remote_arch_state
*rsa
= get_remote_arch_state ();
5375 buf_len
= strlen (rs
->buf
);
5377 /* Further sanity checks, with knowledge of the architecture. */
5378 if (buf_len
> 2 * rsa
->sizeof_g_packet
)
5379 error (_("Remote 'g' packet reply is too long: %s"), rs
->buf
);
5381 /* Save the size of the packet sent to us by the target. It is used
5382 as a heuristic when determining the max size of packets that the
5383 target can safely receive. */
5384 if (rsa
->actual_register_packet_size
== 0)
5385 rsa
->actual_register_packet_size
= buf_len
;
5387 /* If this is smaller than we guessed the 'g' packet would be,
5388 update our records. A 'g' reply that doesn't include a register's
5389 value implies either that the register is not available, or that
5390 the 'p' packet must be used. */
5391 if (buf_len
< 2 * rsa
->sizeof_g_packet
)
5393 rsa
->sizeof_g_packet
= buf_len
/ 2;
5395 for (i
= 0; i
< gdbarch_num_regs (gdbarch
); i
++)
5397 if (rsa
->regs
[i
].pnum
== -1)
5400 if (rsa
->regs
[i
].offset
>= rsa
->sizeof_g_packet
)
5401 rsa
->regs
[i
].in_g_packet
= 0;
5403 rsa
->regs
[i
].in_g_packet
= 1;
5407 regs
= alloca (rsa
->sizeof_g_packet
);
5409 /* Unimplemented registers read as all bits zero. */
5410 memset (regs
, 0, rsa
->sizeof_g_packet
);
5412 /* Reply describes registers byte by byte, each byte encoded as two
5413 hex characters. Suck them all up, then supply them to the
5414 register cacheing/storage mechanism. */
5417 for (i
= 0; i
< rsa
->sizeof_g_packet
; i
++)
5419 if (p
[0] == 0 || p
[1] == 0)
5420 /* This shouldn't happen - we adjusted sizeof_g_packet above. */
5421 internal_error (__FILE__
, __LINE__
,
5422 "unexpected end of 'g' packet reply");
5424 if (p
[0] == 'x' && p
[1] == 'x')
5425 regs
[i
] = 0; /* 'x' */
5427 regs
[i
] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
5433 for (i
= 0; i
< gdbarch_num_regs (gdbarch
); i
++)
5435 struct packet_reg
*r
= &rsa
->regs
[i
];
5438 if (r
->offset
* 2 >= strlen (rs
->buf
))
5439 /* This shouldn't happen - we adjusted in_g_packet above. */
5440 internal_error (__FILE__
, __LINE__
,
5441 "unexpected end of 'g' packet reply");
5442 else if (rs
->buf
[r
->offset
* 2] == 'x')
5444 gdb_assert (r
->offset
* 2 < strlen (rs
->buf
));
5445 /* The register isn't available, mark it as such (at
5446 the same time setting the value to zero). */
5447 regcache_raw_supply (regcache
, r
->regnum
, NULL
);
5450 regcache_raw_supply (regcache
, r
->regnum
,
5458 fetch_registers_using_g (struct regcache
*regcache
)
5461 process_g_packet (regcache
);
5465 remote_fetch_registers (struct target_ops
*ops
,
5466 struct regcache
*regcache
, int regnum
)
5468 struct remote_arch_state
*rsa
= get_remote_arch_state ();
5471 set_general_thread (inferior_ptid
);
5475 struct packet_reg
*reg
= packet_reg_from_regnum (rsa
, regnum
);
5476 gdb_assert (reg
!= NULL
);
5478 /* If this register might be in the 'g' packet, try that first -
5479 we are likely to read more than one register. If this is the
5480 first 'g' packet, we might be overly optimistic about its
5481 contents, so fall back to 'p'. */
5482 if (reg
->in_g_packet
)
5484 fetch_registers_using_g (regcache
);
5485 if (reg
->in_g_packet
)
5489 if (fetch_register_using_p (regcache
, reg
))
5492 /* This register is not available. */
5493 regcache_raw_supply (regcache
, reg
->regnum
, NULL
);
5498 fetch_registers_using_g (regcache
);
5500 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
5501 if (!rsa
->regs
[i
].in_g_packet
)
5502 if (!fetch_register_using_p (regcache
, &rsa
->regs
[i
]))
5504 /* This register is not available. */
5505 regcache_raw_supply (regcache
, i
, NULL
);
5509 /* Prepare to store registers. Since we may send them all (using a
5510 'G' request), we have to read out the ones we don't want to change
5514 remote_prepare_to_store (struct regcache
*regcache
)
5516 struct remote_arch_state
*rsa
= get_remote_arch_state ();
5518 gdb_byte buf
[MAX_REGISTER_SIZE
];
5520 /* Make sure the entire registers array is valid. */
5521 switch (remote_protocol_packets
[PACKET_P
].support
)
5523 case PACKET_DISABLE
:
5524 case PACKET_SUPPORT_UNKNOWN
:
5525 /* Make sure all the necessary registers are cached. */
5526 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
5527 if (rsa
->regs
[i
].in_g_packet
)
5528 regcache_raw_read (regcache
, rsa
->regs
[i
].regnum
, buf
);
5535 /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF
5536 packet was not recognized. */
5539 store_register_using_P (const struct regcache
*regcache
,
5540 struct packet_reg
*reg
)
5542 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
5543 struct remote_state
*rs
= get_remote_state ();
5544 /* Try storing a single register. */
5545 char *buf
= rs
->buf
;
5546 gdb_byte regp
[MAX_REGISTER_SIZE
];
5549 if (remote_protocol_packets
[PACKET_P
].support
== PACKET_DISABLE
)
5552 if (reg
->pnum
== -1)
5555 xsnprintf (buf
, get_remote_packet_size (), "P%s=", phex_nz (reg
->pnum
, 0));
5556 p
= buf
+ strlen (buf
);
5557 regcache_raw_collect (regcache
, reg
->regnum
, regp
);
5558 bin2hex (regp
, p
, register_size (gdbarch
, reg
->regnum
));
5560 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5562 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_P
]))
5567 error (_("Could not write register \"%s\"; remote failure reply '%s'"),
5568 gdbarch_register_name (gdbarch
, reg
->regnum
), rs
->buf
);
5569 case PACKET_UNKNOWN
:
5572 internal_error (__FILE__
, __LINE__
, _("Bad result from packet_ok"));
5576 /* Store register REGNUM, or all registers if REGNUM == -1, from the
5577 contents of the register cache buffer. FIXME: ignores errors. */
5580 store_registers_using_G (const struct regcache
*regcache
)
5582 struct remote_state
*rs
= get_remote_state ();
5583 struct remote_arch_state
*rsa
= get_remote_arch_state ();
5587 /* Extract all the registers in the regcache copying them into a
5591 regs
= alloca (rsa
->sizeof_g_packet
);
5592 memset (regs
, 0, rsa
->sizeof_g_packet
);
5593 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
5595 struct packet_reg
*r
= &rsa
->regs
[i
];
5597 regcache_raw_collect (regcache
, r
->regnum
, regs
+ r
->offset
);
5601 /* Command describes registers byte by byte,
5602 each byte encoded as two hex characters. */
5605 /* remote_prepare_to_store insures that rsa->sizeof_g_packet gets
5607 bin2hex (regs
, p
, rsa
->sizeof_g_packet
);
5609 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5610 if (packet_check_result (rs
->buf
) == PACKET_ERROR
)
5611 error (_("Could not write registers; remote failure reply '%s'"),
5615 /* Store register REGNUM, or all registers if REGNUM == -1, from the contents
5616 of the register cache buffer. FIXME: ignores errors. */
5619 remote_store_registers (struct target_ops
*ops
,
5620 struct regcache
*regcache
, int regnum
)
5622 struct remote_arch_state
*rsa
= get_remote_arch_state ();
5625 set_general_thread (inferior_ptid
);
5629 struct packet_reg
*reg
= packet_reg_from_regnum (rsa
, regnum
);
5630 gdb_assert (reg
!= NULL
);
5632 /* Always prefer to store registers using the 'P' packet if
5633 possible; we often change only a small number of registers.
5634 Sometimes we change a larger number; we'd need help from a
5635 higher layer to know to use 'G'. */
5636 if (store_register_using_P (regcache
, reg
))
5639 /* For now, don't complain if we have no way to write the
5640 register. GDB loses track of unavailable registers too
5641 easily. Some day, this may be an error. We don't have
5642 any way to read the register, either... */
5643 if (!reg
->in_g_packet
)
5646 store_registers_using_G (regcache
);
5650 store_registers_using_G (regcache
);
5652 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
5653 if (!rsa
->regs
[i
].in_g_packet
)
5654 if (!store_register_using_P (regcache
, &rsa
->regs
[i
]))
5655 /* See above for why we do not issue an error here. */
5660 /* Return the number of hex digits in num. */
5663 hexnumlen (ULONGEST num
)
5667 for (i
= 0; num
!= 0; i
++)
5673 /* Set BUF to the minimum number of hex digits representing NUM. */
5676 hexnumstr (char *buf
, ULONGEST num
)
5678 int len
= hexnumlen (num
);
5679 return hexnumnstr (buf
, num
, len
);
5683 /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */
5686 hexnumnstr (char *buf
, ULONGEST num
, int width
)
5692 for (i
= width
- 1; i
>= 0; i
--)
5694 buf
[i
] = "0123456789abcdef"[(num
& 0xf)];
5701 /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */
5704 remote_address_masked (CORE_ADDR addr
)
5706 int address_size
= remote_address_size
;
5707 /* If "remoteaddresssize" was not set, default to target address size. */
5709 address_size
= gdbarch_addr_bit (target_gdbarch
);
5711 if (address_size
> 0
5712 && address_size
< (sizeof (ULONGEST
) * 8))
5714 /* Only create a mask when that mask can safely be constructed
5715 in a ULONGEST variable. */
5717 mask
= (mask
<< address_size
) - 1;
5723 /* Convert BUFFER, binary data at least LEN bytes long, into escaped
5724 binary data in OUT_BUF. Set *OUT_LEN to the length of the data
5725 encoded in OUT_BUF, and return the number of bytes in OUT_BUF
5726 (which may be more than *OUT_LEN due to escape characters). The
5727 total number of bytes in the output buffer will be at most
5731 remote_escape_output (const gdb_byte
*buffer
, int len
,
5732 gdb_byte
*out_buf
, int *out_len
,
5735 int input_index
, output_index
;
5738 for (input_index
= 0; input_index
< len
; input_index
++)
5740 gdb_byte b
= buffer
[input_index
];
5742 if (b
== '$' || b
== '#' || b
== '}')
5744 /* These must be escaped. */
5745 if (output_index
+ 2 > out_maxlen
)
5747 out_buf
[output_index
++] = '}';
5748 out_buf
[output_index
++] = b
^ 0x20;
5752 if (output_index
+ 1 > out_maxlen
)
5754 out_buf
[output_index
++] = b
;
5758 *out_len
= input_index
;
5759 return output_index
;
5762 /* Convert BUFFER, escaped data LEN bytes long, into binary data
5763 in OUT_BUF. Return the number of bytes written to OUT_BUF.
5764 Raise an error if the total number of bytes exceeds OUT_MAXLEN.
5766 This function reverses remote_escape_output. It allows more
5767 escaped characters than that function does, in particular because
5768 '*' must be escaped to avoid the run-length encoding processing
5769 in reading packets. */
5772 remote_unescape_input (const gdb_byte
*buffer
, int len
,
5773 gdb_byte
*out_buf
, int out_maxlen
)
5775 int input_index
, output_index
;
5780 for (input_index
= 0; input_index
< len
; input_index
++)
5782 gdb_byte b
= buffer
[input_index
];
5784 if (output_index
+ 1 > out_maxlen
)
5786 warning (_("Received too much data from remote target;"
5787 " ignoring overflow."));
5788 return output_index
;
5793 out_buf
[output_index
++] = b
^ 0x20;
5799 out_buf
[output_index
++] = b
;
5803 error (_("Unmatched escape character in target response."));
5805 return output_index
;
5808 /* Determine whether the remote target supports binary downloading.
5809 This is accomplished by sending a no-op memory write of zero length
5810 to the target at the specified address. It does not suffice to send
5811 the whole packet, since many stubs strip the eighth bit and
5812 subsequently compute a wrong checksum, which causes real havoc with
5815 NOTE: This can still lose if the serial line is not eight-bit
5816 clean. In cases like this, the user should clear "remote
5820 check_binary_download (CORE_ADDR addr
)
5822 struct remote_state
*rs
= get_remote_state ();
5824 switch (remote_protocol_packets
[PACKET_X
].support
)
5826 case PACKET_DISABLE
:
5830 case PACKET_SUPPORT_UNKNOWN
:
5836 p
+= hexnumstr (p
, (ULONGEST
) addr
);
5838 p
+= hexnumstr (p
, (ULONGEST
) 0);
5842 putpkt_binary (rs
->buf
, (int) (p
- rs
->buf
));
5843 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5845 if (rs
->buf
[0] == '\0')
5848 fprintf_unfiltered (gdb_stdlog
,
5849 "binary downloading NOT suppported by target\n");
5850 remote_protocol_packets
[PACKET_X
].support
= PACKET_DISABLE
;
5855 fprintf_unfiltered (gdb_stdlog
,
5856 "binary downloading suppported by target\n");
5857 remote_protocol_packets
[PACKET_X
].support
= PACKET_ENABLE
;
5864 /* Write memory data directly to the remote machine.
5865 This does not inform the data cache; the data cache uses this.
5866 HEADER is the starting part of the packet.
5867 MEMADDR is the address in the remote memory space.
5868 MYADDR is the address of the buffer in our space.
5869 LEN is the number of bytes.
5870 PACKET_FORMAT should be either 'X' or 'M', and indicates if we
5871 should send data as binary ('X'), or hex-encoded ('M').
5873 The function creates packet of the form
5874 <HEADER><ADDRESS>,<LENGTH>:<DATA>
5876 where encoding of <DATA> is termined by PACKET_FORMAT.
5878 If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma
5881 Returns the number of bytes transferred, or 0 (setting errno) for
5882 error. Only transfer a single packet. */
5885 remote_write_bytes_aux (const char *header
, CORE_ADDR memaddr
,
5886 const gdb_byte
*myaddr
, int len
,
5887 char packet_format
, int use_length
)
5889 struct remote_state
*rs
= get_remote_state ();
5899 if (packet_format
!= 'X' && packet_format
!= 'M')
5900 internal_error (__FILE__
, __LINE__
,
5901 "remote_write_bytes_aux: bad packet format");
5906 payload_size
= get_memory_write_packet_size ();
5908 /* The packet buffer will be large enough for the payload;
5909 get_memory_packet_size ensures this. */
5912 /* Compute the size of the actual payload by subtracting out the
5913 packet header and footer overhead: "$M<memaddr>,<len>:...#nn".
5915 payload_size
-= strlen ("$,:#NN");
5917 /* The comma won't be used. */
5919 header_length
= strlen (header
);
5920 payload_size
-= header_length
;
5921 payload_size
-= hexnumlen (memaddr
);
5923 /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */
5925 strcat (rs
->buf
, header
);
5926 p
= rs
->buf
+ strlen (header
);
5928 /* Compute a best guess of the number of bytes actually transfered. */
5929 if (packet_format
== 'X')
5931 /* Best guess at number of bytes that will fit. */
5932 todo
= min (len
, payload_size
);
5934 payload_size
-= hexnumlen (todo
);
5935 todo
= min (todo
, payload_size
);
5939 /* Num bytes that will fit. */
5940 todo
= min (len
, payload_size
/ 2);
5942 payload_size
-= hexnumlen (todo
);
5943 todo
= min (todo
, payload_size
/ 2);
5947 internal_error (__FILE__
, __LINE__
,
5948 _("minumum packet size too small to write data"));
5950 /* If we already need another packet, then try to align the end
5951 of this packet to a useful boundary. */
5952 if (todo
> 2 * REMOTE_ALIGN_WRITES
&& todo
< len
)
5953 todo
= ((memaddr
+ todo
) & ~(REMOTE_ALIGN_WRITES
- 1)) - memaddr
;
5955 /* Append "<memaddr>". */
5956 memaddr
= remote_address_masked (memaddr
);
5957 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
5964 /* Append <len>. Retain the location/size of <len>. It may need to
5965 be adjusted once the packet body has been created. */
5967 plenlen
= hexnumstr (p
, (ULONGEST
) todo
);
5975 /* Append the packet body. */
5976 if (packet_format
== 'X')
5978 /* Binary mode. Send target system values byte by byte, in
5979 increasing byte addresses. Only escape certain critical
5981 payload_length
= remote_escape_output (myaddr
, todo
, p
, &nr_bytes
,
5984 /* If not all TODO bytes fit, then we'll need another packet. Make
5985 a second try to keep the end of the packet aligned. Don't do
5986 this if the packet is tiny. */
5987 if (nr_bytes
< todo
&& nr_bytes
> 2 * REMOTE_ALIGN_WRITES
)
5991 new_nr_bytes
= (((memaddr
+ nr_bytes
) & ~(REMOTE_ALIGN_WRITES
- 1))
5993 if (new_nr_bytes
!= nr_bytes
)
5994 payload_length
= remote_escape_output (myaddr
, new_nr_bytes
,
5999 p
+= payload_length
;
6000 if (use_length
&& nr_bytes
< todo
)
6002 /* Escape chars have filled up the buffer prematurely,
6003 and we have actually sent fewer bytes than planned.
6004 Fix-up the length field of the packet. Use the same
6005 number of characters as before. */
6006 plen
+= hexnumnstr (plen
, (ULONGEST
) nr_bytes
, plenlen
);
6007 *plen
= ':'; /* overwrite \0 from hexnumnstr() */
6012 /* Normal mode: Send target system values byte by byte, in
6013 increasing byte addresses. Each byte is encoded as a two hex
6015 nr_bytes
= bin2hex (myaddr
, p
, todo
);
6019 putpkt_binary (rs
->buf
, (int) (p
- rs
->buf
));
6020 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6022 if (rs
->buf
[0] == 'E')
6024 /* There is no correspondance between what the remote protocol
6025 uses for errors and errno codes. We would like a cleaner way
6026 of representing errors (big enough to include errno codes,
6027 bfd_error codes, and others). But for now just return EIO. */
6032 /* Return NR_BYTES, not TODO, in case escape chars caused us to send
6033 fewer bytes than we'd planned. */
6037 /* Write memory data directly to the remote machine.
6038 This does not inform the data cache; the data cache uses this.
6039 MEMADDR is the address in the remote memory space.
6040 MYADDR is the address of the buffer in our space.
6041 LEN is the number of bytes.
6043 Returns number of bytes transferred, or 0 (setting errno) for
6044 error. Only transfer a single packet. */
6047 remote_write_bytes (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, int len
)
6049 char *packet_format
= 0;
6051 /* Check whether the target supports binary download. */
6052 check_binary_download (memaddr
);
6054 switch (remote_protocol_packets
[PACKET_X
].support
)
6057 packet_format
= "X";
6059 case PACKET_DISABLE
:
6060 packet_format
= "M";
6062 case PACKET_SUPPORT_UNKNOWN
:
6063 internal_error (__FILE__
, __LINE__
,
6064 _("remote_write_bytes: bad internal state"));
6066 internal_error (__FILE__
, __LINE__
, _("bad switch"));
6069 return remote_write_bytes_aux (packet_format
,
6070 memaddr
, myaddr
, len
, packet_format
[0], 1);
6073 /* Read memory data directly from the remote machine.
6074 This does not use the data cache; the data cache uses this.
6075 MEMADDR is the address in the remote memory space.
6076 MYADDR is the address of the buffer in our space.
6077 LEN is the number of bytes.
6079 Returns number of bytes transferred, or 0 for error. */
6081 /* NOTE: cagney/1999-10-18: This function (and its siblings in other
6082 remote targets) shouldn't attempt to read the entire buffer.
6083 Instead it should read a single packet worth of data and then
6084 return the byte size of that packet to the caller. The caller (its
6085 caller and its callers caller ;-) already contains code for
6086 handling partial reads. */
6089 remote_read_bytes (CORE_ADDR memaddr
, gdb_byte
*myaddr
, int len
)
6091 struct remote_state
*rs
= get_remote_state ();
6092 int max_buf_size
; /* Max size of packet output buffer. */
6098 max_buf_size
= get_memory_read_packet_size ();
6099 /* The packet buffer will be large enough for the payload;
6100 get_memory_packet_size ensures this. */
6109 todo
= min (len
, max_buf_size
/ 2); /* num bytes that will fit */
6111 /* construct "m"<memaddr>","<len>" */
6112 /* sprintf (rs->buf, "m%lx,%x", (unsigned long) memaddr, todo); */
6113 memaddr
= remote_address_masked (memaddr
);
6116 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
6118 p
+= hexnumstr (p
, (ULONGEST
) todo
);
6122 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6124 if (rs
->buf
[0] == 'E'
6125 && isxdigit (rs
->buf
[1]) && isxdigit (rs
->buf
[2])
6126 && rs
->buf
[3] == '\0')
6128 /* There is no correspondance between what the remote
6129 protocol uses for errors and errno codes. We would like
6130 a cleaner way of representing errors (big enough to
6131 include errno codes, bfd_error codes, and others). But
6132 for now just return EIO. */
6137 /* Reply describes memory byte by byte,
6138 each byte encoded as two hex characters. */
6141 if ((i
= hex2bin (p
, myaddr
, todo
)) < todo
)
6143 /* Reply is short. This means that we were able to read
6144 only part of what we wanted to. */
6145 return i
+ (origlen
- len
);
6155 /* Remote notification handler. */
6158 handle_notification (char *buf
, size_t length
)
6160 if (strncmp (buf
, "Stop:", 5) == 0)
6162 if (pending_stop_reply
)
6163 /* We've already parsed the in-flight stop-reply, but the stub
6164 for some reason thought we didn't, possibly due to timeout
6165 on its side. Just ignore it. */
6169 struct cleanup
*old_chain
;
6170 struct stop_reply
*reply
= stop_reply_xmalloc ();
6171 old_chain
= make_cleanup (do_stop_reply_xfree
, reply
);
6173 remote_parse_stop_reply (buf
+ 5, reply
);
6175 discard_cleanups (old_chain
);
6177 /* Be careful to only set it after parsing, since an error
6178 may be thrown then. */
6179 pending_stop_reply
= reply
;
6181 /* Notify the event loop there's a stop reply to acknowledge
6182 and that there may be more events to fetch. */
6183 mark_async_event_handler (remote_async_get_pending_events_token
);
6187 /* We ignore notifications we don't recognize, for compatibility
6188 with newer stubs. */
6193 /* Read or write LEN bytes from inferior memory at MEMADDR,
6194 transferring to or from debugger address BUFFER. Write to inferior
6195 if SHOULD_WRITE is nonzero. Returns length of data written or
6196 read; 0 for error. TARGET is unused. */
6199 remote_xfer_memory (CORE_ADDR mem_addr
, gdb_byte
*buffer
, int mem_len
,
6200 int should_write
, struct mem_attrib
*attrib
,
6201 struct target_ops
*target
)
6205 set_general_thread (inferior_ptid
);
6208 res
= remote_write_bytes (mem_addr
, buffer
, mem_len
);
6210 res
= remote_read_bytes (mem_addr
, buffer
, mem_len
);
6215 /* Sends a packet with content determined by the printf format string
6216 FORMAT and the remaining arguments, then gets the reply. Returns
6217 whether the packet was a success, a failure, or unknown. */
6219 static enum packet_result
6220 remote_send_printf (const char *format
, ...)
6222 struct remote_state
*rs
= get_remote_state ();
6223 int max_size
= get_remote_packet_size ();
6226 va_start (ap
, format
);
6229 if (vsnprintf (rs
->buf
, max_size
, format
, ap
) >= max_size
)
6230 internal_error (__FILE__
, __LINE__
, "Too long remote packet.");
6232 if (putpkt (rs
->buf
) < 0)
6233 error (_("Communication problem with target."));
6236 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6238 return packet_check_result (rs
->buf
);
6242 restore_remote_timeout (void *p
)
6244 int value
= *(int *)p
;
6245 remote_timeout
= value
;
6248 /* Flash writing can take quite some time. We'll set
6249 effectively infinite timeout for flash operations.
6250 In future, we'll need to decide on a better approach. */
6251 static const int remote_flash_timeout
= 1000;
6254 remote_flash_erase (struct target_ops
*ops
,
6255 ULONGEST address
, LONGEST length
)
6257 int addr_size
= gdbarch_addr_bit (target_gdbarch
) / 8;
6258 int saved_remote_timeout
= remote_timeout
;
6259 enum packet_result ret
;
6261 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
6262 &saved_remote_timeout
);
6263 remote_timeout
= remote_flash_timeout
;
6265 ret
= remote_send_printf ("vFlashErase:%s,%s",
6266 phex (address
, addr_size
),
6270 case PACKET_UNKNOWN
:
6271 error (_("Remote target does not support flash erase"));
6273 error (_("Error erasing flash with vFlashErase packet"));
6278 do_cleanups (back_to
);
6282 remote_flash_write (struct target_ops
*ops
,
6283 ULONGEST address
, LONGEST length
,
6284 const gdb_byte
*data
)
6286 int saved_remote_timeout
= remote_timeout
;
6288 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
6289 &saved_remote_timeout
);
6291 remote_timeout
= remote_flash_timeout
;
6292 ret
= remote_write_bytes_aux ("vFlashWrite:", address
, data
, length
, 'X', 0);
6293 do_cleanups (back_to
);
6299 remote_flash_done (struct target_ops
*ops
)
6301 int saved_remote_timeout
= remote_timeout
;
6303 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
6304 &saved_remote_timeout
);
6306 remote_timeout
= remote_flash_timeout
;
6307 ret
= remote_send_printf ("vFlashDone");
6308 do_cleanups (back_to
);
6312 case PACKET_UNKNOWN
:
6313 error (_("Remote target does not support vFlashDone"));
6315 error (_("Error finishing flash operation"));
6322 remote_files_info (struct target_ops
*ignore
)
6324 puts_filtered ("Debugging a target over a serial line.\n");
6327 /* Stuff for dealing with the packets which are part of this protocol.
6328 See comment at top of file for details. */
6330 /* Read a single character from the remote end. */
6333 readchar (int timeout
)
6337 ch
= serial_readchar (remote_desc
, timeout
);
6342 switch ((enum serial_rc
) ch
)
6346 error (_("Remote connection closed"));
6349 perror_with_name (_("Remote communication error"));
6351 case SERIAL_TIMEOUT
:
6357 /* Send the command in *BUF to the remote machine, and read the reply
6358 into *BUF. Report an error if we get an error reply. Resize
6359 *BUF using xrealloc if necessary to hold the result, and update
6363 remote_send (char **buf
,
6367 getpkt (buf
, sizeof_buf
, 0);
6369 if ((*buf
)[0] == 'E')
6370 error (_("Remote failure reply: %s"), *buf
);
6373 /* Return a pointer to an xmalloc'ed string representing an escaped
6374 version of BUF, of len N. E.g. \n is converted to \\n, \t to \\t,
6375 etc. The caller is responsible for releasing the returned
6379 escape_buffer (const char *buf
, int n
)
6381 struct cleanup
*old_chain
;
6382 struct ui_file
*stb
;
6385 stb
= mem_fileopen ();
6386 old_chain
= make_cleanup_ui_file_delete (stb
);
6388 fputstrn_unfiltered (buf
, n
, 0, stb
);
6389 str
= ui_file_xstrdup (stb
, NULL
);
6390 do_cleanups (old_chain
);
6394 /* Display a null-terminated packet on stdout, for debugging, using C
6398 print_packet (char *buf
)
6400 puts_filtered ("\"");
6401 fputstr_filtered (buf
, '"', gdb_stdout
);
6402 puts_filtered ("\"");
6408 return putpkt_binary (buf
, strlen (buf
));
6411 /* Send a packet to the remote machine, with error checking. The data
6412 of the packet is in BUF. The string in BUF can be at most
6413 get_remote_packet_size () - 5 to account for the $, # and checksum,
6414 and for a possible /0 if we are debugging (remote_debug) and want
6415 to print the sent packet as a string. */
6418 putpkt_binary (char *buf
, int cnt
)
6420 struct remote_state
*rs
= get_remote_state ();
6422 unsigned char csum
= 0;
6423 char *buf2
= alloca (cnt
+ 6);
6429 /* Catch cases like trying to read memory or listing threads while
6430 we're waiting for a stop reply. The remote server wouldn't be
6431 ready to handle this request, so we'd hang and timeout. We don't
6432 have to worry about this in synchronous mode, because in that
6433 case it's not possible to issue a command while the target is
6434 running. This is not a problem in non-stop mode, because in that
6435 case, the stub is always ready to process serial input. */
6436 if (!non_stop
&& target_can_async_p () && rs
->waiting_for_stop_reply
)
6437 error (_("Cannot execute this command while the target is running."));
6439 /* We're sending out a new packet. Make sure we don't look at a
6440 stale cached response. */
6441 rs
->cached_wait_status
= 0;
6443 /* Copy the packet into buffer BUF2, encapsulating it
6444 and giving it a checksum. */
6449 for (i
= 0; i
< cnt
; i
++)
6455 *p
++ = tohex ((csum
>> 4) & 0xf);
6456 *p
++ = tohex (csum
& 0xf);
6458 /* Send it over and over until we get a positive ack. */
6462 int started_error_output
= 0;
6466 struct cleanup
*old_chain
;
6470 str
= escape_buffer (buf2
, p
- buf2
);
6471 old_chain
= make_cleanup (xfree
, str
);
6472 fprintf_unfiltered (gdb_stdlog
, "Sending packet: %s...", str
);
6473 gdb_flush (gdb_stdlog
);
6474 do_cleanups (old_chain
);
6476 if (serial_write (remote_desc
, buf2
, p
- buf2
))
6477 perror_with_name (_("putpkt: write failed"));
6479 /* If this is a no acks version of the remote protocol, send the
6480 packet and move on. */
6484 /* Read until either a timeout occurs (-2) or '+' is read.
6485 Handle any notification that arrives in the mean time. */
6488 ch
= readchar (remote_timeout
);
6496 case SERIAL_TIMEOUT
:
6499 if (started_error_output
)
6501 putchar_unfiltered ('\n');
6502 started_error_output
= 0;
6511 fprintf_unfiltered (gdb_stdlog
, "Ack\n");
6515 fprintf_unfiltered (gdb_stdlog
, "Nak\n");
6516 case SERIAL_TIMEOUT
:
6520 break; /* Retransmit buffer. */
6524 fprintf_unfiltered (gdb_stdlog
,
6525 "Packet instead of Ack, ignoring it\n");
6526 /* It's probably an old response sent because an ACK
6527 was lost. Gobble up the packet and ack it so it
6528 doesn't get retransmitted when we resend this
6531 serial_write (remote_desc
, "+", 1);
6532 continue; /* Now, go look for +. */
6539 /* If we got a notification, handle it, and go back to looking
6541 /* We've found the start of a notification. Now
6542 collect the data. */
6543 val
= read_frame (&rs
->buf
, &rs
->buf_size
);
6548 struct cleanup
*old_chain
;
6551 str
= escape_buffer (rs
->buf
, val
);
6552 old_chain
= make_cleanup (xfree
, str
);
6553 fprintf_unfiltered (gdb_stdlog
,
6554 " Notification received: %s\n",
6556 do_cleanups (old_chain
);
6558 handle_notification (rs
->buf
, val
);
6559 /* We're in sync now, rewait for the ack. */
6566 if (!started_error_output
)
6568 started_error_output
= 1;
6569 fprintf_unfiltered (gdb_stdlog
, "putpkt: Junk: ");
6571 fputc_unfiltered (ch
& 0177, gdb_stdlog
);
6572 fprintf_unfiltered (gdb_stdlog
, "%s", rs
->buf
);
6581 if (!started_error_output
)
6583 started_error_output
= 1;
6584 fprintf_unfiltered (gdb_stdlog
, "putpkt: Junk: ");
6586 fputc_unfiltered (ch
& 0177, gdb_stdlog
);
6590 break; /* Here to retransmit. */
6594 /* This is wrong. If doing a long backtrace, the user should be
6595 able to get out next time we call QUIT, without anything as
6596 violent as interrupt_query. If we want to provide a way out of
6597 here without getting to the next QUIT, it should be based on
6598 hitting ^C twice as in remote_wait. */
6609 /* Come here after finding the start of a frame when we expected an
6610 ack. Do our best to discard the rest of this packet. */
6619 c
= readchar (remote_timeout
);
6622 case SERIAL_TIMEOUT
:
6623 /* Nothing we can do. */
6626 /* Discard the two bytes of checksum and stop. */
6627 c
= readchar (remote_timeout
);
6629 c
= readchar (remote_timeout
);
6632 case '*': /* Run length encoding. */
6633 /* Discard the repeat count. */
6634 c
= readchar (remote_timeout
);
6639 /* A regular character. */
6645 /* Come here after finding the start of the frame. Collect the rest
6646 into *BUF, verifying the checksum, length, and handling run-length
6647 compression. NUL terminate the buffer. If there is not enough room,
6648 expand *BUF using xrealloc.
6650 Returns -1 on error, number of characters in buffer (ignoring the
6651 trailing NULL) on success. (could be extended to return one of the
6652 SERIAL status indications). */
6655 read_frame (char **buf_p
,
6662 struct remote_state
*rs
= get_remote_state ();
6669 c
= readchar (remote_timeout
);
6672 case SERIAL_TIMEOUT
:
6674 fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog
);
6678 fputs_filtered ("Saw new packet start in middle of old one\n",
6680 return -1; /* Start a new packet, count retries. */
6683 unsigned char pktcsum
;
6689 check_0
= readchar (remote_timeout
);
6691 check_1
= readchar (remote_timeout
);
6693 if (check_0
== SERIAL_TIMEOUT
|| check_1
== SERIAL_TIMEOUT
)
6696 fputs_filtered ("Timeout in checksum, retrying\n",
6700 else if (check_0
< 0 || check_1
< 0)
6703 fputs_filtered ("Communication error in checksum\n",
6708 /* Don't recompute the checksum; with no ack packets we
6709 don't have any way to indicate a packet retransmission
6714 pktcsum
= (fromhex (check_0
) << 4) | fromhex (check_1
);
6715 if (csum
== pktcsum
)
6720 struct cleanup
*old_chain
;
6723 str
= escape_buffer (buf
, bc
);
6724 old_chain
= make_cleanup (xfree
, str
);
6725 fprintf_unfiltered (gdb_stdlog
,
6727 Bad checksum, sentsum=0x%x, csum=0x%x, buf=%s\n",
6728 pktcsum
, csum
, str
);
6729 do_cleanups (old_chain
);
6731 /* Number of characters in buffer ignoring trailing
6735 case '*': /* Run length encoding. */
6740 c
= readchar (remote_timeout
);
6742 repeat
= c
- ' ' + 3; /* Compute repeat count. */
6744 /* The character before ``*'' is repeated. */
6746 if (repeat
> 0 && repeat
<= 255 && bc
> 0)
6748 if (bc
+ repeat
- 1 >= *sizeof_buf
- 1)
6750 /* Make some more room in the buffer. */
6751 *sizeof_buf
+= repeat
;
6752 *buf_p
= xrealloc (*buf_p
, *sizeof_buf
);
6756 memset (&buf
[bc
], buf
[bc
- 1], repeat
);
6762 printf_filtered (_("Invalid run length encoding: %s\n"), buf
);
6766 if (bc
>= *sizeof_buf
- 1)
6768 /* Make some more room in the buffer. */
6770 *buf_p
= xrealloc (*buf_p
, *sizeof_buf
);
6781 /* Read a packet from the remote machine, with error checking, and
6782 store it in *BUF. Resize *BUF using xrealloc if necessary to hold
6783 the result, and update *SIZEOF_BUF. If FOREVER, wait forever
6784 rather than timing out; this is used (in synchronous mode) to wait
6785 for a target that is is executing user code to stop. */
6786 /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we
6787 don't have to change all the calls to getpkt to deal with the
6788 return value, because at the moment I don't know what the right
6789 thing to do it for those. */
6797 timed_out
= getpkt_sane (buf
, sizeof_buf
, forever
);
6801 /* Read a packet from the remote machine, with error checking, and
6802 store it in *BUF. Resize *BUF using xrealloc if necessary to hold
6803 the result, and update *SIZEOF_BUF. If FOREVER, wait forever
6804 rather than timing out; this is used (in synchronous mode) to wait
6805 for a target that is is executing user code to stop. If FOREVER ==
6806 0, this function is allowed to time out gracefully and return an
6807 indication of this to the caller. Otherwise return the number of
6808 bytes read. If EXPECTING_NOTIF, consider receiving a notification
6809 enough reason to return to the caller. */
6812 getpkt_or_notif_sane_1 (char **buf
, long *sizeof_buf
, int forever
,
6813 int expecting_notif
)
6815 struct remote_state
*rs
= get_remote_state ();
6821 /* We're reading a new response. Make sure we don't look at a
6822 previously cached response. */
6823 rs
->cached_wait_status
= 0;
6825 strcpy (*buf
, "timeout");
6828 timeout
= watchdog
> 0 ? watchdog
: -1;
6829 else if (expecting_notif
)
6830 timeout
= 0; /* There should already be a char in the buffer. If
6833 timeout
= remote_timeout
;
6837 /* Process any number of notifications, and then return when
6841 /* If we get a timeout or bad checksm, retry up to MAX_TRIES
6843 for (tries
= 1; tries
<= MAX_TRIES
; tries
++)
6845 /* This can loop forever if the remote side sends us
6846 characters continuously, but if it pauses, we'll get
6847 SERIAL_TIMEOUT from readchar because of timeout. Then
6848 we'll count that as a retry.
6850 Note that even when forever is set, we will only wait
6851 forever prior to the start of a packet. After that, we
6852 expect characters to arrive at a brisk pace. They should
6853 show up within remote_timeout intervals. */
6855 c
= readchar (timeout
);
6856 while (c
!= SERIAL_TIMEOUT
&& c
!= '$' && c
!= '%');
6858 if (c
== SERIAL_TIMEOUT
)
6860 if (expecting_notif
)
6861 return -1; /* Don't complain, it's normal to not get
6862 anything in this case. */
6864 if (forever
) /* Watchdog went off? Kill the target. */
6868 error (_("Watchdog timeout has expired. Target detached."));
6871 fputs_filtered ("Timed out.\n", gdb_stdlog
);
6875 /* We've found the start of a packet or notification.
6876 Now collect the data. */
6877 val
= read_frame (buf
, sizeof_buf
);
6882 serial_write (remote_desc
, "-", 1);
6885 if (tries
> MAX_TRIES
)
6887 /* We have tried hard enough, and just can't receive the
6888 packet/notification. Give up. */
6889 printf_unfiltered (_("Ignoring packet error, continuing...\n"));
6891 /* Skip the ack char if we're in no-ack mode. */
6892 if (!rs
->noack_mode
)
6893 serial_write (remote_desc
, "+", 1);
6897 /* If we got an ordinary packet, return that to our caller. */
6902 struct cleanup
*old_chain
;
6905 str
= escape_buffer (*buf
, val
);
6906 old_chain
= make_cleanup (xfree
, str
);
6907 fprintf_unfiltered (gdb_stdlog
, "Packet received: %s\n", str
);
6908 do_cleanups (old_chain
);
6911 /* Skip the ack char if we're in no-ack mode. */
6912 if (!rs
->noack_mode
)
6913 serial_write (remote_desc
, "+", 1);
6917 /* If we got a notification, handle it, and go back to looking
6921 gdb_assert (c
== '%');
6925 struct cleanup
*old_chain
;
6928 str
= escape_buffer (*buf
, val
);
6929 old_chain
= make_cleanup (xfree
, str
);
6930 fprintf_unfiltered (gdb_stdlog
,
6931 " Notification received: %s\n",
6933 do_cleanups (old_chain
);
6936 handle_notification (*buf
, val
);
6938 /* Notifications require no acknowledgement. */
6940 if (expecting_notif
)
6947 getpkt_sane (char **buf
, long *sizeof_buf
, int forever
)
6949 return getpkt_or_notif_sane_1 (buf
, sizeof_buf
, forever
, 0);
6953 getpkt_or_notif_sane (char **buf
, long *sizeof_buf
, int forever
)
6955 return getpkt_or_notif_sane_1 (buf
, sizeof_buf
, forever
, 1);
6960 remote_kill (struct target_ops
*ops
)
6962 /* Use catch_errors so the user can quit from gdb even when we
6963 aren't on speaking terms with the remote system. */
6964 catch_errors ((catch_errors_ftype
*) putpkt
, "k", "", RETURN_MASK_ERROR
);
6966 /* Don't wait for it to die. I'm not really sure it matters whether
6967 we do or not. For the existing stubs, kill is a noop. */
6968 target_mourn_inferior ();
6972 remote_vkill (int pid
, struct remote_state
*rs
)
6974 if (remote_protocol_packets
[PACKET_vKill
].support
== PACKET_DISABLE
)
6977 /* Tell the remote target to detach. */
6978 sprintf (rs
->buf
, "vKill;%x", pid
);
6980 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6982 if (packet_ok (rs
->buf
,
6983 &remote_protocol_packets
[PACKET_vKill
]) == PACKET_OK
)
6985 else if (remote_protocol_packets
[PACKET_vKill
].support
== PACKET_DISABLE
)
6992 extended_remote_kill (struct target_ops
*ops
)
6995 int pid
= ptid_get_pid (inferior_ptid
);
6996 struct remote_state
*rs
= get_remote_state ();
6998 res
= remote_vkill (pid
, rs
);
6999 if (res
== -1 && !remote_multi_process_p (rs
))
7001 /* Don't try 'k' on a multi-process aware stub -- it has no way
7002 to specify the pid. */
7006 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7007 if (rs
->buf
[0] != 'O' || rs
->buf
[0] != 'K')
7010 /* Don't wait for it to die. I'm not really sure it matters whether
7011 we do or not. For the existing stubs, kill is a noop. */
7017 error (_("Can't kill process"));
7019 target_mourn_inferior ();
7023 remote_mourn (struct target_ops
*ops
)
7025 remote_mourn_1 (ops
);
7028 /* Worker function for remote_mourn. */
7030 remote_mourn_1 (struct target_ops
*target
)
7032 unpush_target (target
);
7034 /* remote_close takes care of doing most of the clean up. */
7035 generic_mourn_inferior ();
7039 extended_remote_mourn_1 (struct target_ops
*target
)
7041 struct remote_state
*rs
= get_remote_state ();
7043 /* In case we got here due to an error, but we're going to stay
7045 rs
->waiting_for_stop_reply
= 0;
7047 /* We're no longer interested in these events. */
7048 discard_pending_stop_replies (ptid_get_pid (inferior_ptid
));
7050 /* If the current general thread belonged to the process we just
7051 detached from or has exited, the remote side current general
7052 thread becomes undefined. Considering a case like this:
7054 - We just got here due to a detach.
7055 - The process that we're detaching from happens to immediately
7056 report a global breakpoint being hit in non-stop mode, in the
7057 same thread we had selected before.
7058 - GDB attaches to this process again.
7059 - This event happens to be the next event we handle.
7061 GDB would consider that the current general thread didn't need to
7062 be set on the stub side (with Hg), since for all it knew,
7063 GENERAL_THREAD hadn't changed.
7065 Notice that although in all-stop mode, the remote server always
7066 sets the current thread to the thread reporting the stop event,
7067 that doesn't happen in non-stop mode; in non-stop, the stub *must
7068 not* change the current thread when reporting a breakpoint hit,
7069 due to the decoupling of event reporting and event handling.
7071 To keep things simple, we always invalidate our notion of the
7073 record_currthread (minus_one_ptid
);
7075 /* Unlike "target remote", we do not want to unpush the target; then
7076 the next time the user says "run", we won't be connected. */
7078 /* Call common code to mark the inferior as not running. */
7079 generic_mourn_inferior ();
7081 if (!have_inferiors ())
7083 if (!remote_multi_process_p (rs
))
7085 /* Check whether the target is running now - some remote stubs
7086 automatically restart after kill. */
7088 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7090 if (rs
->buf
[0] == 'S' || rs
->buf
[0] == 'T')
7092 /* Assume that the target has been restarted. Set inferior_ptid
7093 so that bits of core GDB realizes there's something here, e.g.,
7094 so that the user can say "kill" again. */
7095 inferior_ptid
= magic_null_ptid
;
7102 extended_remote_mourn (struct target_ops
*ops
)
7104 extended_remote_mourn_1 (ops
);
7108 extended_remote_run (char *args
)
7110 struct remote_state
*rs
= get_remote_state ();
7113 /* If the user has disabled vRun support, or we have detected that
7114 support is not available, do not try it. */
7115 if (remote_protocol_packets
[PACKET_vRun
].support
== PACKET_DISABLE
)
7118 strcpy (rs
->buf
, "vRun;");
7119 len
= strlen (rs
->buf
);
7121 if (strlen (remote_exec_file
) * 2 + len
>= get_remote_packet_size ())
7122 error (_("Remote file name too long for run packet"));
7123 len
+= 2 * bin2hex ((gdb_byte
*) remote_exec_file
, rs
->buf
+ len
, 0);
7125 gdb_assert (args
!= NULL
);
7128 struct cleanup
*back_to
;
7132 argv
= gdb_buildargv (args
);
7133 back_to
= make_cleanup ((void (*) (void *)) freeargv
, argv
);
7134 for (i
= 0; argv
[i
] != NULL
; i
++)
7136 if (strlen (argv
[i
]) * 2 + 1 + len
>= get_remote_packet_size ())
7137 error (_("Argument list too long for run packet"));
7138 rs
->buf
[len
++] = ';';
7139 len
+= 2 * bin2hex ((gdb_byte
*) argv
[i
], rs
->buf
+ len
, 0);
7141 do_cleanups (back_to
);
7144 rs
->buf
[len
++] = '\0';
7147 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7149 if (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_vRun
]) == PACKET_OK
)
7151 /* We have a wait response; we don't need it, though. All is well. */
7154 else if (remote_protocol_packets
[PACKET_vRun
].support
== PACKET_DISABLE
)
7155 /* It wasn't disabled before, but it is now. */
7159 if (remote_exec_file
[0] == '\0')
7160 error (_("Running the default executable on the remote target failed; "
7161 "try \"set remote exec-file\"?"));
7163 error (_("Running \"%s\" on the remote target failed"),
7168 /* In the extended protocol we want to be able to do things like
7169 "run" and have them basically work as expected. So we need
7170 a special create_inferior function. We support changing the
7171 executable file and the command line arguments, but not the
7175 extended_remote_create_inferior_1 (char *exec_file
, char *args
,
7176 char **env
, int from_tty
)
7178 /* If running asynchronously, register the target file descriptor
7179 with the event loop. */
7180 if (target_can_async_p ())
7181 target_async (inferior_event_handler
, 0);
7183 /* Now restart the remote server. */
7184 if (extended_remote_run (args
) == -1)
7186 /* vRun was not supported. Fail if we need it to do what the
7188 if (remote_exec_file
[0])
7189 error (_("Remote target does not support \"set remote exec-file\""));
7191 error (_("Remote target does not support \"set args\" or run <ARGS>"));
7193 /* Fall back to "R". */
7194 extended_remote_restart ();
7197 if (!have_inferiors ())
7199 /* Clean up from the last time we ran, before we mark the target
7200 running again. This will mark breakpoints uninserted, and
7201 get_offsets may insert breakpoints. */
7202 init_thread_list ();
7203 init_wait_for_inferior ();
7206 /* Now mark the inferior as running before we do anything else. */
7207 inferior_ptid
= magic_null_ptid
;
7209 /* Now, if we have thread information, update inferior_ptid. */
7210 inferior_ptid
= remote_current_thread (inferior_ptid
);
7212 remote_add_inferior (ptid_get_pid (inferior_ptid
), 0);
7213 add_thread_silent (inferior_ptid
);
7215 /* Get updated offsets, if the stub uses qOffsets. */
7220 extended_remote_create_inferior (struct target_ops
*ops
,
7221 char *exec_file
, char *args
,
7222 char **env
, int from_tty
)
7224 extended_remote_create_inferior_1 (exec_file
, args
, env
, from_tty
);
7228 /* Insert a breakpoint. On targets that have software breakpoint
7229 support, we ask the remote target to do the work; on targets
7230 which don't, we insert a traditional memory breakpoint. */
7233 remote_insert_breakpoint (struct gdbarch
*gdbarch
,
7234 struct bp_target_info
*bp_tgt
)
7236 /* Try the "Z" s/w breakpoint packet if it is not already disabled.
7237 If it succeeds, then set the support to PACKET_ENABLE. If it
7238 fails, and the user has explicitly requested the Z support then
7239 report an error, otherwise, mark it disabled and go on. */
7241 if (remote_protocol_packets
[PACKET_Z0
].support
!= PACKET_DISABLE
)
7243 CORE_ADDR addr
= bp_tgt
->placed_address
;
7244 struct remote_state
*rs
;
7248 gdbarch_breakpoint_from_pc (gdbarch
, &addr
, &bpsize
);
7250 rs
= get_remote_state ();
7256 addr
= (ULONGEST
) remote_address_masked (addr
);
7257 p
+= hexnumstr (p
, addr
);
7258 sprintf (p
, ",%d", bpsize
);
7261 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7263 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
]))
7268 bp_tgt
->placed_address
= addr
;
7269 bp_tgt
->placed_size
= bpsize
;
7271 case PACKET_UNKNOWN
:
7276 return memory_insert_breakpoint (gdbarch
, bp_tgt
);
7280 remote_remove_breakpoint (struct gdbarch
*gdbarch
,
7281 struct bp_target_info
*bp_tgt
)
7283 CORE_ADDR addr
= bp_tgt
->placed_address
;
7284 struct remote_state
*rs
= get_remote_state ();
7286 if (remote_protocol_packets
[PACKET_Z0
].support
!= PACKET_DISABLE
)
7294 addr
= (ULONGEST
) remote_address_masked (bp_tgt
->placed_address
);
7295 p
+= hexnumstr (p
, addr
);
7296 sprintf (p
, ",%d", bp_tgt
->placed_size
);
7299 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7301 return (rs
->buf
[0] == 'E');
7304 return memory_remove_breakpoint (gdbarch
, bp_tgt
);
7308 watchpoint_to_Z_packet (int type
)
7313 return Z_PACKET_WRITE_WP
;
7316 return Z_PACKET_READ_WP
;
7319 return Z_PACKET_ACCESS_WP
;
7322 internal_error (__FILE__
, __LINE__
,
7323 _("hw_bp_to_z: bad watchpoint type %d"), type
);
7328 remote_insert_watchpoint (CORE_ADDR addr
, int len
, int type
)
7330 struct remote_state
*rs
= get_remote_state ();
7332 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
7334 if (remote_protocol_packets
[PACKET_Z0
+ packet
].support
== PACKET_DISABLE
)
7337 sprintf (rs
->buf
, "Z%x,", packet
);
7338 p
= strchr (rs
->buf
, '\0');
7339 addr
= remote_address_masked (addr
);
7340 p
+= hexnumstr (p
, (ULONGEST
) addr
);
7341 sprintf (p
, ",%x", len
);
7344 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7346 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
+ packet
]))
7349 case PACKET_UNKNOWN
:
7354 internal_error (__FILE__
, __LINE__
,
7355 _("remote_insert_watchpoint: reached end of function"));
7360 remote_remove_watchpoint (CORE_ADDR addr
, int len
, int type
)
7362 struct remote_state
*rs
= get_remote_state ();
7364 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
7366 if (remote_protocol_packets
[PACKET_Z0
+ packet
].support
== PACKET_DISABLE
)
7369 sprintf (rs
->buf
, "z%x,", packet
);
7370 p
= strchr (rs
->buf
, '\0');
7371 addr
= remote_address_masked (addr
);
7372 p
+= hexnumstr (p
, (ULONGEST
) addr
);
7373 sprintf (p
, ",%x", len
);
7375 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7377 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
+ packet
]))
7380 case PACKET_UNKNOWN
:
7385 internal_error (__FILE__
, __LINE__
,
7386 _("remote_remove_watchpoint: reached end of function"));
7390 int remote_hw_watchpoint_limit
= -1;
7391 int remote_hw_breakpoint_limit
= -1;
7394 remote_check_watch_resources (int type
, int cnt
, int ot
)
7396 if (type
== bp_hardware_breakpoint
)
7398 if (remote_hw_breakpoint_limit
== 0)
7400 else if (remote_hw_breakpoint_limit
< 0)
7402 else if (cnt
<= remote_hw_breakpoint_limit
)
7407 if (remote_hw_watchpoint_limit
== 0)
7409 else if (remote_hw_watchpoint_limit
< 0)
7413 else if (cnt
<= remote_hw_watchpoint_limit
)
7420 remote_stopped_by_watchpoint (void)
7422 return remote_stopped_by_watchpoint_p
;
7426 remote_stopped_data_address (struct target_ops
*target
, CORE_ADDR
*addr_p
)
7429 if (remote_stopped_by_watchpoint ())
7431 *addr_p
= remote_watch_data_address
;
7440 remote_insert_hw_breakpoint (struct gdbarch
*gdbarch
,
7441 struct bp_target_info
*bp_tgt
)
7444 struct remote_state
*rs
;
7447 /* The length field should be set to the size of a breakpoint
7448 instruction, even though we aren't inserting one ourselves. */
7450 gdbarch_breakpoint_from_pc
7451 (gdbarch
, &bp_tgt
->placed_address
, &bp_tgt
->placed_size
);
7453 if (remote_protocol_packets
[PACKET_Z1
].support
== PACKET_DISABLE
)
7456 rs
= get_remote_state ();
7463 addr
= remote_address_masked (bp_tgt
->placed_address
);
7464 p
+= hexnumstr (p
, (ULONGEST
) addr
);
7465 sprintf (p
, ",%x", bp_tgt
->placed_size
);
7468 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7470 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z1
]))
7473 case PACKET_UNKNOWN
:
7478 internal_error (__FILE__
, __LINE__
,
7479 _("remote_insert_hw_breakpoint: reached end of function"));
7484 remote_remove_hw_breakpoint (struct gdbarch
*gdbarch
,
7485 struct bp_target_info
*bp_tgt
)
7488 struct remote_state
*rs
= get_remote_state ();
7491 if (remote_protocol_packets
[PACKET_Z1
].support
== PACKET_DISABLE
)
7498 addr
= remote_address_masked (bp_tgt
->placed_address
);
7499 p
+= hexnumstr (p
, (ULONGEST
) addr
);
7500 sprintf (p
, ",%x", bp_tgt
->placed_size
);
7503 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7505 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z1
]))
7508 case PACKET_UNKNOWN
:
7513 internal_error (__FILE__
, __LINE__
,
7514 _("remote_remove_hw_breakpoint: reached end of function"));
7517 /* Table used by the crc32 function to calcuate the checksum. */
7519 static unsigned long crc32_table
[256] =
7522 static unsigned long
7523 crc32 (unsigned char *buf
, int len
, unsigned int crc
)
7525 if (!crc32_table
[1])
7527 /* Initialize the CRC table and the decoding table. */
7531 for (i
= 0; i
< 256; i
++)
7533 for (c
= i
<< 24, j
= 8; j
> 0; --j
)
7534 c
= c
& 0x80000000 ? (c
<< 1) ^ 0x04c11db7 : (c
<< 1);
7541 crc
= (crc
<< 8) ^ crc32_table
[((crc
>> 24) ^ *buf
) & 255];
7547 /* compare-sections command
7549 With no arguments, compares each loadable section in the exec bfd
7550 with the same memory range on the target, and reports mismatches.
7551 Useful for verifying the image on the target against the exec file.
7552 Depends on the target understanding the new "qCRC:" request. */
7554 /* FIXME: cagney/1999-10-26: This command should be broken down into a
7555 target method (target verify memory) and generic version of the
7556 actual command. This will allow other high-level code (especially
7557 generic_load()) to make use of this target functionality. */
7560 compare_sections_command (char *args
, int from_tty
)
7562 struct remote_state
*rs
= get_remote_state ();
7564 unsigned long host_crc
, target_crc
;
7565 struct cleanup
*old_chain
;
7568 const char *sectname
;
7575 error (_("command cannot be used without an exec file"));
7576 if (!current_target
.to_shortname
||
7577 strcmp (current_target
.to_shortname
, "remote") != 0)
7578 error (_("command can only be used with remote target"));
7580 for (s
= exec_bfd
->sections
; s
; s
= s
->next
)
7582 if (!(s
->flags
& SEC_LOAD
))
7583 continue; /* skip non-loadable section */
7585 size
= bfd_get_section_size (s
);
7587 continue; /* skip zero-length section */
7589 sectname
= bfd_get_section_name (exec_bfd
, s
);
7590 if (args
&& strcmp (args
, sectname
) != 0)
7591 continue; /* not the section selected by user */
7593 matched
= 1; /* do this section */
7595 /* FIXME: assumes lma can fit into long. */
7596 xsnprintf (rs
->buf
, get_remote_packet_size (), "qCRC:%lx,%lx",
7597 (long) lma
, (long) size
);
7600 /* Be clever; compute the host_crc before waiting for target
7602 sectdata
= xmalloc (size
);
7603 old_chain
= make_cleanup (xfree
, sectdata
);
7604 bfd_get_section_contents (exec_bfd
, s
, sectdata
, 0, size
);
7605 host_crc
= crc32 ((unsigned char *) sectdata
, size
, 0xffffffff);
7607 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7608 if (rs
->buf
[0] == 'E')
7609 error (_("target memory fault, section %s, range %s -- %s"), sectname
,
7610 paddress (target_gdbarch
, lma
),
7611 paddress (target_gdbarch
, lma
+ size
));
7612 if (rs
->buf
[0] != 'C')
7613 error (_("remote target does not support this operation"));
7615 for (target_crc
= 0, tmp
= &rs
->buf
[1]; *tmp
; tmp
++)
7616 target_crc
= target_crc
* 16 + fromhex (*tmp
);
7618 printf_filtered ("Section %s, range %s -- %s: ", sectname
,
7619 paddress (target_gdbarch
, lma
),
7620 paddress (target_gdbarch
, lma
+ size
));
7621 if (host_crc
== target_crc
)
7622 printf_filtered ("matched.\n");
7625 printf_filtered ("MIS-MATCHED!\n");
7629 do_cleanups (old_chain
);
7632 warning (_("One or more sections of the remote executable does not match\n\
7633 the loaded file\n"));
7634 if (args
&& !matched
)
7635 printf_filtered (_("No loaded section named '%s'.\n"), args
);
7638 /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET
7639 into remote target. The number of bytes written to the remote
7640 target is returned, or -1 for error. */
7643 remote_write_qxfer (struct target_ops
*ops
, const char *object_name
,
7644 const char *annex
, const gdb_byte
*writebuf
,
7645 ULONGEST offset
, LONGEST len
,
7646 struct packet_config
*packet
)
7650 struct remote_state
*rs
= get_remote_state ();
7651 int max_size
= get_memory_write_packet_size ();
7653 if (packet
->support
== PACKET_DISABLE
)
7656 /* Insert header. */
7657 i
= snprintf (rs
->buf
, max_size
,
7658 "qXfer:%s:write:%s:%s:",
7659 object_name
, annex
? annex
: "",
7660 phex_nz (offset
, sizeof offset
));
7661 max_size
-= (i
+ 1);
7663 /* Escape as much data as fits into rs->buf. */
7664 buf_len
= remote_escape_output
7665 (writebuf
, len
, (rs
->buf
+ i
), &max_size
, max_size
);
7667 if (putpkt_binary (rs
->buf
, i
+ buf_len
) < 0
7668 || getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) < 0
7669 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
7672 unpack_varlen_hex (rs
->buf
, &n
);
7676 /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet.
7677 Data at OFFSET, of up to LEN bytes, is read into READBUF; the
7678 number of bytes read is returned, or 0 for EOF, or -1 for error.
7679 The number of bytes read may be less than LEN without indicating an
7680 EOF. PACKET is checked and updated to indicate whether the remote
7681 target supports this object. */
7684 remote_read_qxfer (struct target_ops
*ops
, const char *object_name
,
7686 gdb_byte
*readbuf
, ULONGEST offset
, LONGEST len
,
7687 struct packet_config
*packet
)
7689 static char *finished_object
;
7690 static char *finished_annex
;
7691 static ULONGEST finished_offset
;
7693 struct remote_state
*rs
= get_remote_state ();
7694 LONGEST i
, n
, packet_len
;
7696 if (packet
->support
== PACKET_DISABLE
)
7699 /* Check whether we've cached an end-of-object packet that matches
7701 if (finished_object
)
7703 if (strcmp (object_name
, finished_object
) == 0
7704 && strcmp (annex
? annex
: "", finished_annex
) == 0
7705 && offset
== finished_offset
)
7708 /* Otherwise, we're now reading something different. Discard
7710 xfree (finished_object
);
7711 xfree (finished_annex
);
7712 finished_object
= NULL
;
7713 finished_annex
= NULL
;
7716 /* Request only enough to fit in a single packet. The actual data
7717 may not, since we don't know how much of it will need to be escaped;
7718 the target is free to respond with slightly less data. We subtract
7719 five to account for the response type and the protocol frame. */
7720 n
= min (get_remote_packet_size () - 5, len
);
7721 snprintf (rs
->buf
, get_remote_packet_size () - 4, "qXfer:%s:read:%s:%s,%s",
7722 object_name
, annex
? annex
: "",
7723 phex_nz (offset
, sizeof offset
),
7724 phex_nz (n
, sizeof n
));
7725 i
= putpkt (rs
->buf
);
7730 packet_len
= getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0);
7731 if (packet_len
< 0 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
7734 if (rs
->buf
[0] != 'l' && rs
->buf
[0] != 'm')
7735 error (_("Unknown remote qXfer reply: %s"), rs
->buf
);
7737 /* 'm' means there is (or at least might be) more data after this
7738 batch. That does not make sense unless there's at least one byte
7739 of data in this reply. */
7740 if (rs
->buf
[0] == 'm' && packet_len
== 1)
7741 error (_("Remote qXfer reply contained no data."));
7743 /* Got some data. */
7744 i
= remote_unescape_input (rs
->buf
+ 1, packet_len
- 1, readbuf
, n
);
7746 /* 'l' is an EOF marker, possibly including a final block of data,
7747 or possibly empty. If we have the final block of a non-empty
7748 object, record this fact to bypass a subsequent partial read. */
7749 if (rs
->buf
[0] == 'l' && offset
+ i
> 0)
7751 finished_object
= xstrdup (object_name
);
7752 finished_annex
= xstrdup (annex
? annex
: "");
7753 finished_offset
= offset
+ i
;
7760 remote_xfer_partial (struct target_ops
*ops
, enum target_object object
,
7761 const char *annex
, gdb_byte
*readbuf
,
7762 const gdb_byte
*writebuf
, ULONGEST offset
, LONGEST len
)
7764 struct remote_state
*rs
;
7769 set_general_thread (inferior_ptid
);
7771 rs
= get_remote_state ();
7773 /* Handle memory using the standard memory routines. */
7774 if (object
== TARGET_OBJECT_MEMORY
)
7779 /* If the remote target is connected but not running, we should
7780 pass this request down to a lower stratum (e.g. the executable
7782 if (!target_has_execution
)
7785 if (writebuf
!= NULL
)
7786 xfered
= remote_write_bytes (offset
, writebuf
, len
);
7788 xfered
= remote_read_bytes (offset
, readbuf
, len
);
7792 else if (xfered
== 0 && errno
== 0)
7798 /* Handle SPU memory using qxfer packets. */
7799 if (object
== TARGET_OBJECT_SPU
)
7802 return remote_read_qxfer (ops
, "spu", annex
, readbuf
, offset
, len
,
7803 &remote_protocol_packets
7804 [PACKET_qXfer_spu_read
]);
7806 return remote_write_qxfer (ops
, "spu", annex
, writebuf
, offset
, len
,
7807 &remote_protocol_packets
7808 [PACKET_qXfer_spu_write
]);
7811 /* Handle extra signal info using qxfer packets. */
7812 if (object
== TARGET_OBJECT_SIGNAL_INFO
)
7815 return remote_read_qxfer (ops
, "siginfo", annex
, readbuf
, offset
, len
,
7816 &remote_protocol_packets
7817 [PACKET_qXfer_siginfo_read
]);
7819 return remote_write_qxfer (ops
, "siginfo", annex
, writebuf
, offset
, len
,
7820 &remote_protocol_packets
7821 [PACKET_qXfer_siginfo_write
]);
7824 /* Only handle flash writes. */
7825 if (writebuf
!= NULL
)
7831 case TARGET_OBJECT_FLASH
:
7832 xfered
= remote_flash_write (ops
, offset
, len
, writebuf
);
7836 else if (xfered
== 0 && errno
== 0)
7846 /* Map pre-existing objects onto letters. DO NOT do this for new
7847 objects!!! Instead specify new query packets. */
7850 case TARGET_OBJECT_AVR
:
7854 case TARGET_OBJECT_AUXV
:
7855 gdb_assert (annex
== NULL
);
7856 return remote_read_qxfer (ops
, "auxv", annex
, readbuf
, offset
, len
,
7857 &remote_protocol_packets
[PACKET_qXfer_auxv
]);
7859 case TARGET_OBJECT_AVAILABLE_FEATURES
:
7860 return remote_read_qxfer
7861 (ops
, "features", annex
, readbuf
, offset
, len
,
7862 &remote_protocol_packets
[PACKET_qXfer_features
]);
7864 case TARGET_OBJECT_LIBRARIES
:
7865 return remote_read_qxfer
7866 (ops
, "libraries", annex
, readbuf
, offset
, len
,
7867 &remote_protocol_packets
[PACKET_qXfer_libraries
]);
7869 case TARGET_OBJECT_MEMORY_MAP
:
7870 gdb_assert (annex
== NULL
);
7871 return remote_read_qxfer (ops
, "memory-map", annex
, readbuf
, offset
, len
,
7872 &remote_protocol_packets
[PACKET_qXfer_memory_map
]);
7874 case TARGET_OBJECT_OSDATA
:
7875 /* Should only get here if we're connected. */
7876 gdb_assert (remote_desc
);
7877 return remote_read_qxfer
7878 (ops
, "osdata", annex
, readbuf
, offset
, len
,
7879 &remote_protocol_packets
[PACKET_qXfer_osdata
]);
7881 case TARGET_OBJECT_THREADS
:
7882 gdb_assert (annex
== NULL
);
7883 return remote_read_qxfer (ops
, "threads", annex
, readbuf
, offset
, len
,
7884 &remote_protocol_packets
[PACKET_qXfer_threads
]);
7890 /* Note: a zero OFFSET and LEN can be used to query the minimum
7892 if (offset
== 0 && len
== 0)
7893 return (get_remote_packet_size ());
7894 /* Minimum outbuf size is get_remote_packet_size (). If LEN is not
7895 large enough let the caller deal with it. */
7896 if (len
< get_remote_packet_size ())
7898 len
= get_remote_packet_size ();
7900 /* Except for querying the minimum buffer size, target must be open. */
7902 error (_("remote query is only available after target open"));
7904 gdb_assert (annex
!= NULL
);
7905 gdb_assert (readbuf
!= NULL
);
7911 /* We used one buffer char for the remote protocol q command and
7912 another for the query type. As the remote protocol encapsulation
7913 uses 4 chars plus one extra in case we are debugging
7914 (remote_debug), we have PBUFZIZ - 7 left to pack the query
7917 while (annex
[i
] && (i
< (get_remote_packet_size () - 8)))
7919 /* Bad caller may have sent forbidden characters. */
7920 gdb_assert (isprint (annex
[i
]) && annex
[i
] != '$' && annex
[i
] != '#');
7925 gdb_assert (annex
[i
] == '\0');
7927 i
= putpkt (rs
->buf
);
7931 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7932 strcpy ((char *) readbuf
, rs
->buf
);
7934 return strlen ((char *) readbuf
);
7938 remote_search_memory (struct target_ops
* ops
,
7939 CORE_ADDR start_addr
, ULONGEST search_space_len
,
7940 const gdb_byte
*pattern
, ULONGEST pattern_len
,
7941 CORE_ADDR
*found_addrp
)
7943 int addr_size
= gdbarch_addr_bit (target_gdbarch
) / 8;
7944 struct remote_state
*rs
= get_remote_state ();
7945 int max_size
= get_memory_write_packet_size ();
7946 struct packet_config
*packet
=
7947 &remote_protocol_packets
[PACKET_qSearch_memory
];
7948 /* number of packet bytes used to encode the pattern,
7949 this could be more than PATTERN_LEN due to escape characters */
7950 int escaped_pattern_len
;
7951 /* amount of pattern that was encodable in the packet */
7952 int used_pattern_len
;
7955 ULONGEST found_addr
;
7957 /* Don't go to the target if we don't have to.
7958 This is done before checking packet->support to avoid the possibility that
7959 a success for this edge case means the facility works in general. */
7960 if (pattern_len
> search_space_len
)
7962 if (pattern_len
== 0)
7964 *found_addrp
= start_addr
;
7968 /* If we already know the packet isn't supported, fall back to the simple
7969 way of searching memory. */
7971 if (packet
->support
== PACKET_DISABLE
)
7973 /* Target doesn't provided special support, fall back and use the
7974 standard support (copy memory and do the search here). */
7975 return simple_search_memory (ops
, start_addr
, search_space_len
,
7976 pattern
, pattern_len
, found_addrp
);
7979 /* Insert header. */
7980 i
= snprintf (rs
->buf
, max_size
,
7981 "qSearch:memory:%s;%s;",
7982 phex_nz (start_addr
, addr_size
),
7983 phex_nz (search_space_len
, sizeof (search_space_len
)));
7984 max_size
-= (i
+ 1);
7986 /* Escape as much data as fits into rs->buf. */
7987 escaped_pattern_len
=
7988 remote_escape_output (pattern
, pattern_len
, (rs
->buf
+ i
),
7989 &used_pattern_len
, max_size
);
7991 /* Bail if the pattern is too large. */
7992 if (used_pattern_len
!= pattern_len
)
7993 error ("Pattern is too large to transmit to remote target.");
7995 if (putpkt_binary (rs
->buf
, i
+ escaped_pattern_len
) < 0
7996 || getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) < 0
7997 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
7999 /* The request may not have worked because the command is not
8000 supported. If so, fall back to the simple way. */
8001 if (packet
->support
== PACKET_DISABLE
)
8003 return simple_search_memory (ops
, start_addr
, search_space_len
,
8004 pattern
, pattern_len
, found_addrp
);
8009 if (rs
->buf
[0] == '0')
8011 else if (rs
->buf
[0] == '1')
8014 if (rs
->buf
[1] != ',')
8015 error (_("Unknown qSearch:memory reply: %s"), rs
->buf
);
8016 unpack_varlen_hex (rs
->buf
+ 2, &found_addr
);
8017 *found_addrp
= found_addr
;
8020 error (_("Unknown qSearch:memory reply: %s"), rs
->buf
);
8026 remote_rcmd (char *command
,
8027 struct ui_file
*outbuf
)
8029 struct remote_state
*rs
= get_remote_state ();
8033 error (_("remote rcmd is only available after target open"));
8035 /* Send a NULL command across as an empty command. */
8036 if (command
== NULL
)
8039 /* The query prefix. */
8040 strcpy (rs
->buf
, "qRcmd,");
8041 p
= strchr (rs
->buf
, '\0');
8043 if ((strlen (rs
->buf
) + strlen (command
) * 2 + 8/*misc*/) > get_remote_packet_size ())
8044 error (_("\"monitor\" command ``%s'' is too long."), command
);
8046 /* Encode the actual command. */
8047 bin2hex ((gdb_byte
*) command
, p
, 0);
8049 if (putpkt (rs
->buf
) < 0)
8050 error (_("Communication problem with target."));
8052 /* get/display the response */
8057 /* XXX - see also remote_get_noisy_reply(). */
8059 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8062 error (_("Target does not support this command."));
8063 if (buf
[0] == 'O' && buf
[1] != 'K')
8065 remote_console_output (buf
+ 1); /* 'O' message from stub. */
8068 if (strcmp (buf
, "OK") == 0)
8070 if (strlen (buf
) == 3 && buf
[0] == 'E'
8071 && isdigit (buf
[1]) && isdigit (buf
[2]))
8073 error (_("Protocol error with Rcmd"));
8075 for (p
= buf
; p
[0] != '\0' && p
[1] != '\0'; p
+= 2)
8077 char c
= (fromhex (p
[0]) << 4) + fromhex (p
[1]);
8078 fputc_unfiltered (c
, outbuf
);
8084 static VEC(mem_region_s
) *
8085 remote_memory_map (struct target_ops
*ops
)
8087 VEC(mem_region_s
) *result
= NULL
;
8088 char *text
= target_read_stralloc (¤t_target
,
8089 TARGET_OBJECT_MEMORY_MAP
, NULL
);
8093 struct cleanup
*back_to
= make_cleanup (xfree
, text
);
8094 result
= parse_memory_map (text
);
8095 do_cleanups (back_to
);
8102 packet_command (char *args
, int from_tty
)
8104 struct remote_state
*rs
= get_remote_state ();
8107 error (_("command can only be used with remote target"));
8110 error (_("remote-packet command requires packet text as argument"));
8112 puts_filtered ("sending: ");
8113 print_packet (args
);
8114 puts_filtered ("\n");
8117 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8118 puts_filtered ("received: ");
8119 print_packet (rs
->buf
);
8120 puts_filtered ("\n");
8124 /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */
8126 static void display_thread_info (struct gdb_ext_thread_info
*info
);
8128 static void threadset_test_cmd (char *cmd
, int tty
);
8130 static void threadalive_test (char *cmd
, int tty
);
8132 static void threadlist_test_cmd (char *cmd
, int tty
);
8134 int get_and_display_threadinfo (threadref
*ref
);
8136 static void threadinfo_test_cmd (char *cmd
, int tty
);
8138 static int thread_display_step (threadref
*ref
, void *context
);
8140 static void threadlist_update_test_cmd (char *cmd
, int tty
);
8142 static void init_remote_threadtests (void);
8144 #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */
8147 threadset_test_cmd (char *cmd
, int tty
)
8149 int sample_thread
= SAMPLE_THREAD
;
8151 printf_filtered (_("Remote threadset test\n"));
8152 set_general_thread (sample_thread
);
8157 threadalive_test (char *cmd
, int tty
)
8159 int sample_thread
= SAMPLE_THREAD
;
8160 int pid
= ptid_get_pid (inferior_ptid
);
8161 ptid_t ptid
= ptid_build (pid
, 0, sample_thread
);
8163 if (remote_thread_alive (ptid
))
8164 printf_filtered ("PASS: Thread alive test\n");
8166 printf_filtered ("FAIL: Thread alive test\n");
8169 void output_threadid (char *title
, threadref
*ref
);
8172 output_threadid (char *title
, threadref
*ref
)
8176 pack_threadid (&hexid
[0], ref
); /* Convert threead id into hex. */
8178 printf_filtered ("%s %s\n", title
, (&hexid
[0]));
8182 threadlist_test_cmd (char *cmd
, int tty
)
8185 threadref nextthread
;
8186 int done
, result_count
;
8187 threadref threadlist
[3];
8189 printf_filtered ("Remote Threadlist test\n");
8190 if (!remote_get_threadlist (startflag
, &nextthread
, 3, &done
,
8191 &result_count
, &threadlist
[0]))
8192 printf_filtered ("FAIL: threadlist test\n");
8195 threadref
*scan
= threadlist
;
8196 threadref
*limit
= scan
+ result_count
;
8198 while (scan
< limit
)
8199 output_threadid (" thread ", scan
++);
8204 display_thread_info (struct gdb_ext_thread_info
*info
)
8206 output_threadid ("Threadid: ", &info
->threadid
);
8207 printf_filtered ("Name: %s\n ", info
->shortname
);
8208 printf_filtered ("State: %s\n", info
->display
);
8209 printf_filtered ("other: %s\n\n", info
->more_display
);
8213 get_and_display_threadinfo (threadref
*ref
)
8217 struct gdb_ext_thread_info threadinfo
;
8219 set
= TAG_THREADID
| TAG_EXISTS
| TAG_THREADNAME
8220 | TAG_MOREDISPLAY
| TAG_DISPLAY
;
8221 if (0 != (result
= remote_get_threadinfo (ref
, set
, &threadinfo
)))
8222 display_thread_info (&threadinfo
);
8227 threadinfo_test_cmd (char *cmd
, int tty
)
8229 int athread
= SAMPLE_THREAD
;
8233 int_to_threadref (&thread
, athread
);
8234 printf_filtered ("Remote Threadinfo test\n");
8235 if (!get_and_display_threadinfo (&thread
))
8236 printf_filtered ("FAIL cannot get thread info\n");
8240 thread_display_step (threadref
*ref
, void *context
)
8242 /* output_threadid(" threadstep ",ref); *//* simple test */
8243 return get_and_display_threadinfo (ref
);
8247 threadlist_update_test_cmd (char *cmd
, int tty
)
8249 printf_filtered ("Remote Threadlist update test\n");
8250 remote_threadlist_iterator (thread_display_step
, 0, CRAZY_MAX_THREADS
);
8254 init_remote_threadtests (void)
8256 add_com ("tlist", class_obscure
, threadlist_test_cmd
, _("\
8257 Fetch and print the remote list of thread identifiers, one pkt only"));
8258 add_com ("tinfo", class_obscure
, threadinfo_test_cmd
,
8259 _("Fetch and display info about one thread"));
8260 add_com ("tset", class_obscure
, threadset_test_cmd
,
8261 _("Test setting to a different thread"));
8262 add_com ("tupd", class_obscure
, threadlist_update_test_cmd
,
8263 _("Iterate through updating all remote thread info"));
8264 add_com ("talive", class_obscure
, threadalive_test
,
8265 _(" Remote thread alive test "));
8270 /* Convert a thread ID to a string. Returns the string in a static
8274 remote_pid_to_str (struct target_ops
*ops
, ptid_t ptid
)
8276 static char buf
[64];
8277 struct remote_state
*rs
= get_remote_state ();
8279 if (ptid_is_pid (ptid
))
8281 /* Printing an inferior target id. */
8283 /* When multi-process extensions are off, there's no way in the
8284 remote protocol to know the remote process id, if there's any
8285 at all. There's one exception --- when we're connected with
8286 target extended-remote, and we manually attached to a process
8287 with "attach PID". We don't record anywhere a flag that
8288 allows us to distinguish that case from the case of
8289 connecting with extended-remote and the stub already being
8290 attached to a process, and reporting yes to qAttached, hence
8291 no smart special casing here. */
8292 if (!remote_multi_process_p (rs
))
8294 xsnprintf (buf
, sizeof buf
, "Remote target");
8298 return normal_pid_to_str (ptid
);
8302 if (ptid_equal (magic_null_ptid
, ptid
))
8303 xsnprintf (buf
, sizeof buf
, "Thread <main>");
8304 else if (remote_multi_process_p (rs
))
8305 xsnprintf (buf
, sizeof buf
, "Thread %d.%ld",
8306 ptid_get_pid (ptid
), ptid_get_tid (ptid
));
8308 xsnprintf (buf
, sizeof buf
, "Thread %ld",
8309 ptid_get_tid (ptid
));
8314 /* Get the address of the thread local variable in OBJFILE which is
8315 stored at OFFSET within the thread local storage for thread PTID. */
8318 remote_get_thread_local_address (struct target_ops
*ops
,
8319 ptid_t ptid
, CORE_ADDR lm
, CORE_ADDR offset
)
8321 if (remote_protocol_packets
[PACKET_qGetTLSAddr
].support
!= PACKET_DISABLE
)
8323 struct remote_state
*rs
= get_remote_state ();
8325 char *endp
= rs
->buf
+ get_remote_packet_size ();
8326 enum packet_result result
;
8328 strcpy (p
, "qGetTLSAddr:");
8330 p
= write_ptid (p
, endp
, ptid
);
8332 p
+= hexnumstr (p
, offset
);
8334 p
+= hexnumstr (p
, lm
);
8338 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8339 result
= packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_qGetTLSAddr
]);
8340 if (result
== PACKET_OK
)
8344 unpack_varlen_hex (rs
->buf
, &result
);
8347 else if (result
== PACKET_UNKNOWN
)
8348 throw_error (TLS_GENERIC_ERROR
,
8349 _("Remote target doesn't support qGetTLSAddr packet"));
8351 throw_error (TLS_GENERIC_ERROR
,
8352 _("Remote target failed to process qGetTLSAddr request"));
8355 throw_error (TLS_GENERIC_ERROR
,
8356 _("TLS not supported or disabled on this target"));
8361 /* Support for inferring a target description based on the current
8362 architecture and the size of a 'g' packet. While the 'g' packet
8363 can have any size (since optional registers can be left off the
8364 end), some sizes are easily recognizable given knowledge of the
8365 approximate architecture. */
8367 struct remote_g_packet_guess
8370 const struct target_desc
*tdesc
;
8372 typedef struct remote_g_packet_guess remote_g_packet_guess_s
;
8373 DEF_VEC_O(remote_g_packet_guess_s
);
8375 struct remote_g_packet_data
8377 VEC(remote_g_packet_guess_s
) *guesses
;
8380 static struct gdbarch_data
*remote_g_packet_data_handle
;
8383 remote_g_packet_data_init (struct obstack
*obstack
)
8385 return OBSTACK_ZALLOC (obstack
, struct remote_g_packet_data
);
8389 register_remote_g_packet_guess (struct gdbarch
*gdbarch
, int bytes
,
8390 const struct target_desc
*tdesc
)
8392 struct remote_g_packet_data
*data
8393 = gdbarch_data (gdbarch
, remote_g_packet_data_handle
);
8394 struct remote_g_packet_guess new_guess
, *guess
;
8397 gdb_assert (tdesc
!= NULL
);
8400 VEC_iterate (remote_g_packet_guess_s
, data
->guesses
, ix
, guess
);
8402 if (guess
->bytes
== bytes
)
8403 internal_error (__FILE__
, __LINE__
,
8404 "Duplicate g packet description added for size %d",
8407 new_guess
.bytes
= bytes
;
8408 new_guess
.tdesc
= tdesc
;
8409 VEC_safe_push (remote_g_packet_guess_s
, data
->guesses
, &new_guess
);
8412 /* Return 1 if remote_read_description would do anything on this target
8413 and architecture, 0 otherwise. */
8416 remote_read_description_p (struct target_ops
*target
)
8418 struct remote_g_packet_data
*data
8419 = gdbarch_data (target_gdbarch
, remote_g_packet_data_handle
);
8421 if (!VEC_empty (remote_g_packet_guess_s
, data
->guesses
))
8427 static const struct target_desc
*
8428 remote_read_description (struct target_ops
*target
)
8430 struct remote_g_packet_data
*data
8431 = gdbarch_data (target_gdbarch
, remote_g_packet_data_handle
);
8433 /* Do not try this during initial connection, when we do not know
8434 whether there is a running but stopped thread. */
8435 if (!target_has_execution
|| ptid_equal (inferior_ptid
, null_ptid
))
8438 if (!VEC_empty (remote_g_packet_guess_s
, data
->guesses
))
8440 struct remote_g_packet_guess
*guess
;
8442 int bytes
= send_g_packet ();
8445 VEC_iterate (remote_g_packet_guess_s
, data
->guesses
, ix
, guess
);
8447 if (guess
->bytes
== bytes
)
8448 return guess
->tdesc
;
8450 /* We discard the g packet. A minor optimization would be to
8451 hold on to it, and fill the register cache once we have selected
8452 an architecture, but it's too tricky to do safely. */
8458 /* Remote file transfer support. This is host-initiated I/O, not
8459 target-initiated; for target-initiated, see remote-fileio.c. */
8461 /* If *LEFT is at least the length of STRING, copy STRING to
8462 *BUFFER, update *BUFFER to point to the new end of the buffer, and
8463 decrease *LEFT. Otherwise raise an error. */
8466 remote_buffer_add_string (char **buffer
, int *left
, char *string
)
8468 int len
= strlen (string
);
8471 error (_("Packet too long for target."));
8473 memcpy (*buffer
, string
, len
);
8477 /* NUL-terminate the buffer as a convenience, if there is
8483 /* If *LEFT is large enough, hex encode LEN bytes from BYTES into
8484 *BUFFER, update *BUFFER to point to the new end of the buffer, and
8485 decrease *LEFT. Otherwise raise an error. */
8488 remote_buffer_add_bytes (char **buffer
, int *left
, const gdb_byte
*bytes
,
8491 if (2 * len
> *left
)
8492 error (_("Packet too long for target."));
8494 bin2hex (bytes
, *buffer
, len
);
8498 /* NUL-terminate the buffer as a convenience, if there is
8504 /* If *LEFT is large enough, convert VALUE to hex and add it to
8505 *BUFFER, update *BUFFER to point to the new end of the buffer, and
8506 decrease *LEFT. Otherwise raise an error. */
8509 remote_buffer_add_int (char **buffer
, int *left
, ULONGEST value
)
8511 int len
= hexnumlen (value
);
8514 error (_("Packet too long for target."));
8516 hexnumstr (*buffer
, value
);
8520 /* NUL-terminate the buffer as a convenience, if there is
8526 /* Parse an I/O result packet from BUFFER. Set RETCODE to the return
8527 value, *REMOTE_ERRNO to the remote error number or zero if none
8528 was included, and *ATTACHMENT to point to the start of the annex
8529 if any. The length of the packet isn't needed here; there may
8530 be NUL bytes in BUFFER, but they will be after *ATTACHMENT.
8532 Return 0 if the packet could be parsed, -1 if it could not. If
8533 -1 is returned, the other variables may not be initialized. */
8536 remote_hostio_parse_result (char *buffer
, int *retcode
,
8537 int *remote_errno
, char **attachment
)
8544 if (buffer
[0] != 'F')
8548 *retcode
= strtol (&buffer
[1], &p
, 16);
8549 if (errno
!= 0 || p
== &buffer
[1])
8552 /* Check for ",errno". */
8556 *remote_errno
= strtol (p
+ 1, &p2
, 16);
8557 if (errno
!= 0 || p
+ 1 == p2
)
8562 /* Check for ";attachment". If there is no attachment, the
8563 packet should end here. */
8566 *attachment
= p
+ 1;
8569 else if (*p
== '\0')
8575 /* Send a prepared I/O packet to the target and read its response.
8576 The prepared packet is in the global RS->BUF before this function
8577 is called, and the answer is there when we return.
8579 COMMAND_BYTES is the length of the request to send, which may include
8580 binary data. WHICH_PACKET is the packet configuration to check
8581 before attempting a packet. If an error occurs, *REMOTE_ERRNO
8582 is set to the error number and -1 is returned. Otherwise the value
8583 returned by the function is returned.
8585 ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an
8586 attachment is expected; an error will be reported if there's a
8587 mismatch. If one is found, *ATTACHMENT will be set to point into
8588 the packet buffer and *ATTACHMENT_LEN will be set to the
8589 attachment's length. */
8592 remote_hostio_send_command (int command_bytes
, int which_packet
,
8593 int *remote_errno
, char **attachment
,
8594 int *attachment_len
)
8596 struct remote_state
*rs
= get_remote_state ();
8597 int ret
, bytes_read
;
8598 char *attachment_tmp
;
8601 || remote_protocol_packets
[which_packet
].support
== PACKET_DISABLE
)
8603 *remote_errno
= FILEIO_ENOSYS
;
8607 putpkt_binary (rs
->buf
, command_bytes
);
8608 bytes_read
= getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0);
8610 /* If it timed out, something is wrong. Don't try to parse the
8614 *remote_errno
= FILEIO_EINVAL
;
8618 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[which_packet
]))
8621 *remote_errno
= FILEIO_EINVAL
;
8623 case PACKET_UNKNOWN
:
8624 *remote_errno
= FILEIO_ENOSYS
;
8630 if (remote_hostio_parse_result (rs
->buf
, &ret
, remote_errno
,
8633 *remote_errno
= FILEIO_EINVAL
;
8637 /* Make sure we saw an attachment if and only if we expected one. */
8638 if ((attachment_tmp
== NULL
&& attachment
!= NULL
)
8639 || (attachment_tmp
!= NULL
&& attachment
== NULL
))
8641 *remote_errno
= FILEIO_EINVAL
;
8645 /* If an attachment was found, it must point into the packet buffer;
8646 work out how many bytes there were. */
8647 if (attachment_tmp
!= NULL
)
8649 *attachment
= attachment_tmp
;
8650 *attachment_len
= bytes_read
- (*attachment
- rs
->buf
);
8656 /* Open FILENAME on the remote target, using FLAGS and MODE. Return a
8657 remote file descriptor, or -1 if an error occurs (and set
8661 remote_hostio_open (const char *filename
, int flags
, int mode
,
8664 struct remote_state
*rs
= get_remote_state ();
8666 int left
= get_remote_packet_size () - 1;
8668 remote_buffer_add_string (&p
, &left
, "vFile:open:");
8670 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
8672 remote_buffer_add_string (&p
, &left
, ",");
8674 remote_buffer_add_int (&p
, &left
, flags
);
8675 remote_buffer_add_string (&p
, &left
, ",");
8677 remote_buffer_add_int (&p
, &left
, mode
);
8679 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_open
,
8680 remote_errno
, NULL
, NULL
);
8683 /* Write up to LEN bytes from WRITE_BUF to FD on the remote target.
8684 Return the number of bytes written, or -1 if an error occurs (and
8685 set *REMOTE_ERRNO). */
8688 remote_hostio_pwrite (int fd
, const gdb_byte
*write_buf
, int len
,
8689 ULONGEST offset
, int *remote_errno
)
8691 struct remote_state
*rs
= get_remote_state ();
8693 int left
= get_remote_packet_size ();
8696 remote_buffer_add_string (&p
, &left
, "vFile:pwrite:");
8698 remote_buffer_add_int (&p
, &left
, fd
);
8699 remote_buffer_add_string (&p
, &left
, ",");
8701 remote_buffer_add_int (&p
, &left
, offset
);
8702 remote_buffer_add_string (&p
, &left
, ",");
8704 p
+= remote_escape_output (write_buf
, len
, p
, &out_len
,
8705 get_remote_packet_size () - (p
- rs
->buf
));
8707 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_pwrite
,
8708 remote_errno
, NULL
, NULL
);
8711 /* Read up to LEN bytes FD on the remote target into READ_BUF
8712 Return the number of bytes read, or -1 if an error occurs (and
8713 set *REMOTE_ERRNO). */
8716 remote_hostio_pread (int fd
, gdb_byte
*read_buf
, int len
,
8717 ULONGEST offset
, int *remote_errno
)
8719 struct remote_state
*rs
= get_remote_state ();
8722 int left
= get_remote_packet_size ();
8723 int ret
, attachment_len
;
8726 remote_buffer_add_string (&p
, &left
, "vFile:pread:");
8728 remote_buffer_add_int (&p
, &left
, fd
);
8729 remote_buffer_add_string (&p
, &left
, ",");
8731 remote_buffer_add_int (&p
, &left
, len
);
8732 remote_buffer_add_string (&p
, &left
, ",");
8734 remote_buffer_add_int (&p
, &left
, offset
);
8736 ret
= remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_pread
,
8737 remote_errno
, &attachment
,
8743 read_len
= remote_unescape_input (attachment
, attachment_len
,
8745 if (read_len
!= ret
)
8746 error (_("Read returned %d, but %d bytes."), ret
, (int) read_len
);
8751 /* Close FD on the remote target. Return 0, or -1 if an error occurs
8752 (and set *REMOTE_ERRNO). */
8755 remote_hostio_close (int fd
, int *remote_errno
)
8757 struct remote_state
*rs
= get_remote_state ();
8759 int left
= get_remote_packet_size () - 1;
8761 remote_buffer_add_string (&p
, &left
, "vFile:close:");
8763 remote_buffer_add_int (&p
, &left
, fd
);
8765 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_close
,
8766 remote_errno
, NULL
, NULL
);
8769 /* Unlink FILENAME on the remote target. Return 0, or -1 if an error
8770 occurs (and set *REMOTE_ERRNO). */
8773 remote_hostio_unlink (const char *filename
, int *remote_errno
)
8775 struct remote_state
*rs
= get_remote_state ();
8777 int left
= get_remote_packet_size () - 1;
8779 remote_buffer_add_string (&p
, &left
, "vFile:unlink:");
8781 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
8784 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_unlink
,
8785 remote_errno
, NULL
, NULL
);
8789 remote_fileio_errno_to_host (int errnum
)
8813 case FILEIO_ENOTDIR
:
8833 case FILEIO_ENAMETOOLONG
:
8834 return ENAMETOOLONG
;
8840 remote_hostio_error (int errnum
)
8842 int host_error
= remote_fileio_errno_to_host (errnum
);
8844 if (host_error
== -1)
8845 error (_("Unknown remote I/O error %d"), errnum
);
8847 error (_("Remote I/O error: %s"), safe_strerror (host_error
));
8851 remote_hostio_close_cleanup (void *opaque
)
8853 int fd
= *(int *) opaque
;
8856 remote_hostio_close (fd
, &remote_errno
);
8861 remote_bfd_iovec_open (struct bfd
*abfd
, void *open_closure
)
8863 const char *filename
= bfd_get_filename (abfd
);
8864 int fd
, remote_errno
;
8867 gdb_assert (remote_filename_p (filename
));
8869 fd
= remote_hostio_open (filename
+ 7, FILEIO_O_RDONLY
, 0, &remote_errno
);
8872 errno
= remote_fileio_errno_to_host (remote_errno
);
8873 bfd_set_error (bfd_error_system_call
);
8877 stream
= xmalloc (sizeof (int));
8883 remote_bfd_iovec_close (struct bfd
*abfd
, void *stream
)
8885 int fd
= *(int *)stream
;
8890 /* Ignore errors on close; these may happen if the remote
8891 connection was already torn down. */
8892 remote_hostio_close (fd
, &remote_errno
);
8898 remote_bfd_iovec_pread (struct bfd
*abfd
, void *stream
, void *buf
,
8899 file_ptr nbytes
, file_ptr offset
)
8901 int fd
= *(int *)stream
;
8903 file_ptr pos
, bytes
;
8906 while (nbytes
> pos
)
8908 bytes
= remote_hostio_pread (fd
, (char *)buf
+ pos
, nbytes
- pos
,
8909 offset
+ pos
, &remote_errno
);
8911 /* Success, but no bytes, means end-of-file. */
8915 errno
= remote_fileio_errno_to_host (remote_errno
);
8916 bfd_set_error (bfd_error_system_call
);
8927 remote_bfd_iovec_stat (struct bfd
*abfd
, void *stream
, struct stat
*sb
)
8929 /* FIXME: We should probably implement remote_hostio_stat. */
8930 sb
->st_size
= INT_MAX
;
8935 remote_filename_p (const char *filename
)
8937 return strncmp (filename
, "remote:", 7) == 0;
8941 remote_bfd_open (const char *remote_file
, const char *target
)
8943 return bfd_openr_iovec (remote_file
, target
,
8944 remote_bfd_iovec_open
, NULL
,
8945 remote_bfd_iovec_pread
,
8946 remote_bfd_iovec_close
,
8947 remote_bfd_iovec_stat
);
8951 remote_file_put (const char *local_file
, const char *remote_file
, int from_tty
)
8953 struct cleanup
*back_to
, *close_cleanup
;
8954 int retcode
, fd
, remote_errno
, bytes
, io_size
;
8957 int bytes_in_buffer
;
8962 error (_("command can only be used with remote target"));
8964 file
= fopen (local_file
, "rb");
8966 perror_with_name (local_file
);
8967 back_to
= make_cleanup_fclose (file
);
8969 fd
= remote_hostio_open (remote_file
, (FILEIO_O_WRONLY
| FILEIO_O_CREAT
8971 0700, &remote_errno
);
8973 remote_hostio_error (remote_errno
);
8975 /* Send up to this many bytes at once. They won't all fit in the
8976 remote packet limit, so we'll transfer slightly fewer. */
8977 io_size
= get_remote_packet_size ();
8978 buffer
= xmalloc (io_size
);
8979 make_cleanup (xfree
, buffer
);
8981 close_cleanup
= make_cleanup (remote_hostio_close_cleanup
, &fd
);
8983 bytes_in_buffer
= 0;
8986 while (bytes_in_buffer
|| !saw_eof
)
8990 bytes
= fread (buffer
+ bytes_in_buffer
, 1, io_size
- bytes_in_buffer
,
8995 error (_("Error reading %s."), local_file
);
8998 /* EOF. Unless there is something still in the
8999 buffer from the last iteration, we are done. */
9001 if (bytes_in_buffer
== 0)
9009 bytes
+= bytes_in_buffer
;
9010 bytes_in_buffer
= 0;
9012 retcode
= remote_hostio_pwrite (fd
, buffer
, bytes
, offset
, &remote_errno
);
9015 remote_hostio_error (remote_errno
);
9016 else if (retcode
== 0)
9017 error (_("Remote write of %d bytes returned 0!"), bytes
);
9018 else if (retcode
< bytes
)
9020 /* Short write. Save the rest of the read data for the next
9022 bytes_in_buffer
= bytes
- retcode
;
9023 memmove (buffer
, buffer
+ retcode
, bytes_in_buffer
);
9029 discard_cleanups (close_cleanup
);
9030 if (remote_hostio_close (fd
, &remote_errno
))
9031 remote_hostio_error (remote_errno
);
9034 printf_filtered (_("Successfully sent file \"%s\".\n"), local_file
);
9035 do_cleanups (back_to
);
9039 remote_file_get (const char *remote_file
, const char *local_file
, int from_tty
)
9041 struct cleanup
*back_to
, *close_cleanup
;
9042 int fd
, remote_errno
, bytes
, io_size
;
9048 error (_("command can only be used with remote target"));
9050 fd
= remote_hostio_open (remote_file
, FILEIO_O_RDONLY
, 0, &remote_errno
);
9052 remote_hostio_error (remote_errno
);
9054 file
= fopen (local_file
, "wb");
9056 perror_with_name (local_file
);
9057 back_to
= make_cleanup_fclose (file
);
9059 /* Send up to this many bytes at once. They won't all fit in the
9060 remote packet limit, so we'll transfer slightly fewer. */
9061 io_size
= get_remote_packet_size ();
9062 buffer
= xmalloc (io_size
);
9063 make_cleanup (xfree
, buffer
);
9065 close_cleanup
= make_cleanup (remote_hostio_close_cleanup
, &fd
);
9070 bytes
= remote_hostio_pread (fd
, buffer
, io_size
, offset
, &remote_errno
);
9072 /* Success, but no bytes, means end-of-file. */
9075 remote_hostio_error (remote_errno
);
9079 bytes
= fwrite (buffer
, 1, bytes
, file
);
9081 perror_with_name (local_file
);
9084 discard_cleanups (close_cleanup
);
9085 if (remote_hostio_close (fd
, &remote_errno
))
9086 remote_hostio_error (remote_errno
);
9089 printf_filtered (_("Successfully fetched file \"%s\".\n"), remote_file
);
9090 do_cleanups (back_to
);
9094 remote_file_delete (const char *remote_file
, int from_tty
)
9096 int retcode
, remote_errno
;
9099 error (_("command can only be used with remote target"));
9101 retcode
= remote_hostio_unlink (remote_file
, &remote_errno
);
9103 remote_hostio_error (remote_errno
);
9106 printf_filtered (_("Successfully deleted file \"%s\".\n"), remote_file
);
9110 remote_put_command (char *args
, int from_tty
)
9112 struct cleanup
*back_to
;
9116 error_no_arg (_("file to put"));
9118 argv
= gdb_buildargv (args
);
9119 back_to
= make_cleanup_freeargv (argv
);
9120 if (argv
[0] == NULL
|| argv
[1] == NULL
|| argv
[2] != NULL
)
9121 error (_("Invalid parameters to remote put"));
9123 remote_file_put (argv
[0], argv
[1], from_tty
);
9125 do_cleanups (back_to
);
9129 remote_get_command (char *args
, int from_tty
)
9131 struct cleanup
*back_to
;
9135 error_no_arg (_("file to get"));
9137 argv
= gdb_buildargv (args
);
9138 back_to
= make_cleanup_freeargv (argv
);
9139 if (argv
[0] == NULL
|| argv
[1] == NULL
|| argv
[2] != NULL
)
9140 error (_("Invalid parameters to remote get"));
9142 remote_file_get (argv
[0], argv
[1], from_tty
);
9144 do_cleanups (back_to
);
9148 remote_delete_command (char *args
, int from_tty
)
9150 struct cleanup
*back_to
;
9154 error_no_arg (_("file to delete"));
9156 argv
= gdb_buildargv (args
);
9157 back_to
= make_cleanup_freeargv (argv
);
9158 if (argv
[0] == NULL
|| argv
[1] != NULL
)
9159 error (_("Invalid parameters to remote delete"));
9161 remote_file_delete (argv
[0], from_tty
);
9163 do_cleanups (back_to
);
9167 remote_command (char *args
, int from_tty
)
9169 help_list (remote_cmdlist
, "remote ", -1, gdb_stdout
);
9173 remote_can_execute_reverse (void)
9175 if (remote_protocol_packets
[PACKET_bs
].support
== PACKET_ENABLE
9176 || remote_protocol_packets
[PACKET_bc
].support
== PACKET_ENABLE
)
9183 remote_supports_non_stop (void)
9189 remote_supports_multi_process (void)
9191 struct remote_state
*rs
= get_remote_state ();
9192 return remote_multi_process_p (rs
);
9196 remote_supports_cond_tracepoints (void)
9198 struct remote_state
*rs
= get_remote_state ();
9199 return rs
->cond_tracepoints
;
9203 remote_supports_fast_tracepoints (void)
9205 struct remote_state
*rs
= get_remote_state ();
9206 return rs
->fast_tracepoints
;
9210 remote_trace_init ()
9213 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
9214 if (strcmp (target_buf
, "OK"))
9215 error (_("Target does not support this command."));
9218 static void free_actions_list (char **actions_list
);
9219 static void free_actions_list_cleanup_wrapper (void *);
9221 free_actions_list_cleanup_wrapper (void *al
)
9223 free_actions_list (al
);
9227 free_actions_list (char **actions_list
)
9231 if (actions_list
== 0)
9234 for (ndx
= 0; actions_list
[ndx
]; ndx
++)
9235 xfree (actions_list
[ndx
]);
9237 xfree (actions_list
);
9241 remote_download_tracepoint (struct breakpoint
*t
)
9247 char **stepping_actions
;
9249 struct cleanup
*old_chain
= NULL
;
9250 struct agent_expr
*aexpr
;
9251 struct cleanup
*aexpr_chain
= NULL
;
9254 encode_actions (t
, &tdp_actions
, &stepping_actions
);
9255 old_chain
= make_cleanup (free_actions_list_cleanup_wrapper
,
9257 (void) make_cleanup (free_actions_list_cleanup_wrapper
, stepping_actions
);
9259 tpaddr
= t
->loc
->address
;
9260 sprintf_vma (tmp
, (t
->loc
? tpaddr
: 0));
9261 sprintf (buf
, "QTDP:%x:%s:%c:%lx:%x", t
->number
,
9263 (t
->enable_state
== bp_enabled
? 'E' : 'D'),
9264 t
->step_count
, t
->pass_count
);
9265 /* Fast tracepoints are mostly handled by the target, but we can
9266 tell the target how big of an instruction block should be moved
9268 if (t
->type
== bp_fast_tracepoint
)
9270 /* Only test for support at download time; we may not know
9271 target capabilities at definition time. */
9272 if (remote_supports_fast_tracepoints ())
9276 if (gdbarch_fast_tracepoint_valid_at (target_gdbarch
,
9277 tpaddr
, &isize
, NULL
))
9278 sprintf (buf
+ strlen (buf
), ":F%x", isize
);
9280 /* If it passed validation at definition but fails now,
9281 something is very wrong. */
9282 internal_error (__FILE__
, __LINE__
,
9283 "Fast tracepoint not valid during download");
9286 /* Fast tracepoints are functionally identical to regular
9287 tracepoints, so don't take lack of support as a reason to
9288 give up on the trace run. */
9289 warning (_("Target does not support fast tracepoints, downloading %d as regular tracepoint"), t
->number
);
9291 /* If the tracepoint has a conditional, make it into an agent
9292 expression and append to the definition. */
9295 /* Only test support at download time, we may not know target
9296 capabilities at definition time. */
9297 if (remote_supports_cond_tracepoints ())
9299 aexpr
= gen_eval_for_expr (t
->loc
->address
, t
->loc
->cond
);
9300 aexpr_chain
= make_cleanup_free_agent_expr (aexpr
);
9301 sprintf (buf
+ strlen (buf
), ":X%x,", aexpr
->len
);
9302 pkt
= buf
+ strlen (buf
);
9303 for (ndx
= 0; ndx
< aexpr
->len
; ++ndx
)
9304 pkt
= pack_hex_byte (pkt
, aexpr
->buf
[ndx
]);
9306 do_cleanups (aexpr_chain
);
9309 warning (_("Target does not support conditional tracepoints, ignoring tp %d cond"), t
->number
);
9312 if (t
->actions
|| *default_collect
)
9315 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
9316 if (strcmp (target_buf
, "OK"))
9317 error (_("Target does not support tracepoints."));
9319 if (!t
->actions
&& !*default_collect
)
9322 /* do_single_steps (t); */
9325 for (ndx
= 0; tdp_actions
[ndx
]; ndx
++)
9327 QUIT
; /* allow user to bail out with ^C */
9328 sprintf (buf
, "QTDP:-%x:%s:%s%c",
9329 t
->number
, tmp
, /* address */
9331 ((tdp_actions
[ndx
+ 1] || stepping_actions
)
9334 remote_get_noisy_reply (&target_buf
,
9336 if (strcmp (target_buf
, "OK"))
9337 error (_("Error on target while setting tracepoints."));
9340 if (stepping_actions
)
9342 for (ndx
= 0; stepping_actions
[ndx
]; ndx
++)
9344 QUIT
; /* allow user to bail out with ^C */
9345 sprintf (buf
, "QTDP:-%x:%s:%s%s%s",
9346 t
->number
, tmp
, /* address */
9347 ((ndx
== 0) ? "S" : ""),
9348 stepping_actions
[ndx
],
9349 (stepping_actions
[ndx
+ 1] ? "-" : ""));
9351 remote_get_noisy_reply (&target_buf
,
9353 if (strcmp (target_buf
, "OK"))
9354 error (_("Error on target while setting tracepoints."));
9357 do_cleanups (old_chain
);
9362 remote_download_trace_state_variable (struct trace_state_variable
*tsv
)
9364 struct remote_state
*rs
= get_remote_state ();
9367 sprintf (rs
->buf
, "QTDV:%x:%s:%x:",
9368 tsv
->number
, phex ((ULONGEST
) tsv
->initial_value
, 8), tsv
->builtin
);
9369 p
= rs
->buf
+ strlen (rs
->buf
);
9370 if ((p
- rs
->buf
) + strlen (tsv
->name
) * 2 >= get_remote_packet_size ())
9371 error (_("Trace state variable name too long for tsv definition packet"));
9372 p
+= 2 * bin2hex ((gdb_byte
*) (tsv
->name
), p
, 0);
9375 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
9379 remote_trace_set_readonly_regions ()
9387 return; /* No information to give. */
9389 strcpy (target_buf
, "QTro");
9390 for (s
= exec_bfd
->sections
; s
; s
= s
->next
)
9392 char tmp1
[40], tmp2
[40];
9394 if ((s
->flags
& SEC_LOAD
) == 0 ||
9395 /* (s->flags & SEC_CODE) == 0 || */
9396 (s
->flags
& SEC_READONLY
) == 0)
9401 size
= bfd_get_section_size (s
);
9402 sprintf_vma (tmp1
, lma
);
9403 sprintf_vma (tmp2
, lma
+ size
);
9404 sprintf (target_buf
+ strlen (target_buf
),
9405 ":%s,%s", tmp1
, tmp2
);
9409 putpkt (target_buf
);
9410 getpkt (&target_buf
, &target_buf_size
, 0);
9415 remote_trace_start ()
9418 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
9419 if (strcmp (target_buf
, "OK"))
9420 error (_("Bogus reply from target: %s"), target_buf
);
9424 remote_get_trace_status (struct trace_status
*ts
)
9426 char *p
, *p1
, *p_temp
;
9428 /* FIXME we need to get register block size some other way */
9429 extern int trace_regblock_size
;
9430 trace_regblock_size
= get_remote_arch_state ()->sizeof_g_packet
;
9432 putpkt ("qTStatus");
9433 getpkt (&target_buf
, &target_buf_size
, 0);
9434 /* FIXME should handle more variety of replies */
9438 /* If the remote target doesn't do tracing, flag it. */
9442 /* We're working with a live target. */
9445 /* Set some defaults. */
9446 ts
->running_known
= 0;
9447 ts
->stop_reason
= trace_stop_reason_unknown
;
9448 ts
->traceframe_count
= -1;
9449 ts
->buffer_free
= 0;
9452 error (_("Bogus trace status reply from target: %s"), target_buf
);
9454 parse_trace_status (p
, ts
);
9460 remote_trace_stop ()
9463 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
9464 if (strcmp (target_buf
, "OK"))
9465 error (_("Bogus reply from target: %s"), target_buf
);
9469 remote_trace_find (enum trace_find_type type
, int num
,
9470 ULONGEST addr1
, ULONGEST addr2
,
9473 struct remote_state
*rs
= get_remote_state ();
9475 int target_frameno
= -1, target_tracept
= -1;
9478 strcpy (p
, "QTFrame:");
9479 p
= strchr (p
, '\0');
9483 sprintf (p
, "%x", num
);
9486 sprintf (p
, "pc:%s", phex_nz (addr1
, 0));
9489 sprintf (p
, "tdp:%x", num
);
9492 sprintf (p
, "range:%s:%s", phex_nz (addr1
, 0), phex_nz (addr2
, 0));
9495 sprintf (p
, "outside:%s:%s", phex_nz (addr1
, 0), phex_nz (addr2
, 0));
9498 error ("Unknown trace find type %d", type
);
9502 reply
= remote_get_noisy_reply (&(rs
->buf
), &sizeof_pkt
);
9504 while (reply
&& *reply
)
9508 if ((target_frameno
= (int) strtol (++reply
, &reply
, 16)) == -1)
9509 error (_("Target failed to find requested trace frame."));
9512 if ((target_tracept
= (int) strtol (++reply
, &reply
, 16)) == -1)
9513 error (_("Target failed to find requested trace frame."));
9515 case 'O': /* "OK"? */
9516 if (reply
[1] == 'K' && reply
[2] == '\0')
9519 error (_("Bogus reply from target: %s"), reply
);
9522 error (_("Bogus reply from target: %s"), reply
);
9525 *tpp
= target_tracept
;
9526 return target_frameno
;
9530 remote_get_trace_state_variable_value (int tsvnum
, LONGEST
*val
)
9532 struct remote_state
*rs
= get_remote_state ();
9536 sprintf (rs
->buf
, "qTV:%x", tsvnum
);
9538 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
9539 if (reply
&& *reply
)
9543 unpack_varlen_hex (reply
+ 1, &uval
);
9544 *val
= (LONGEST
) uval
;
9552 remote_save_trace_data (char *filename
)
9554 struct remote_state
*rs
= get_remote_state ();
9558 strcpy (p
, "QTSave:");
9560 if ((p
- rs
->buf
) + strlen (filename
) * 2 >= get_remote_packet_size ())
9561 error (_("Remote file name too long for trace save packet"));
9562 p
+= 2 * bin2hex ((gdb_byte
*) filename
, p
, 0);
9565 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
9569 /* This is basically a memory transfer, but needs to be its own packet
9570 because we don't know how the target actually organizes its trace
9571 memory, plus we want to be able to ask for as much as possible, but
9572 not be unhappy if we don't get as much as we ask for. */
9575 remote_get_raw_trace_data (gdb_byte
*buf
, ULONGEST offset
, LONGEST len
)
9577 struct remote_state
*rs
= get_remote_state ();
9583 strcpy (p
, "qTBuffer:");
9585 p
+= hexnumstr (p
, offset
);
9587 p
+= hexnumstr (p
, len
);
9591 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
9592 if (reply
&& *reply
)
9594 /* 'l' by itself means we're at the end of the buffer and
9595 there is nothing more to get. */
9599 /* Convert the reply into binary. Limit the number of bytes to
9600 convert according to our passed-in buffer size, rather than
9601 what was returned in the packet; if the target is
9602 unexpectedly generous and gives us a bigger reply than we
9603 asked for, we don't want to crash. */
9604 rslt
= hex2bin (target_buf
, buf
, len
);
9608 /* Something went wrong, flag as an error. */
9613 remote_set_disconnected_tracing (int val
)
9615 struct remote_state
*rs
= get_remote_state ();
9617 sprintf (rs
->buf
, "QTDisconnected:%x", val
);
9619 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
9620 if (strcmp (target_buf
, "OK"))
9621 error (_("Target does not support this command."));
9625 remote_core_of_thread (struct target_ops
*ops
, ptid_t ptid
)
9627 struct thread_info
*info
= find_thread_ptid (ptid
);
9628 if (info
&& info
->private)
9629 return info
->private->core
;
9634 init_remote_ops (void)
9636 remote_ops
.to_shortname
= "remote";
9637 remote_ops
.to_longname
= "Remote serial target in gdb-specific protocol";
9639 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
9640 Specify the serial device it is connected to\n\
9641 (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).";
9642 remote_ops
.to_open
= remote_open
;
9643 remote_ops
.to_close
= remote_close
;
9644 remote_ops
.to_detach
= remote_detach
;
9645 remote_ops
.to_disconnect
= remote_disconnect
;
9646 remote_ops
.to_resume
= remote_resume
;
9647 remote_ops
.to_wait
= remote_wait
;
9648 remote_ops
.to_fetch_registers
= remote_fetch_registers
;
9649 remote_ops
.to_store_registers
= remote_store_registers
;
9650 remote_ops
.to_prepare_to_store
= remote_prepare_to_store
;
9651 remote_ops
.deprecated_xfer_memory
= remote_xfer_memory
;
9652 remote_ops
.to_files_info
= remote_files_info
;
9653 remote_ops
.to_insert_breakpoint
= remote_insert_breakpoint
;
9654 remote_ops
.to_remove_breakpoint
= remote_remove_breakpoint
;
9655 remote_ops
.to_stopped_by_watchpoint
= remote_stopped_by_watchpoint
;
9656 remote_ops
.to_stopped_data_address
= remote_stopped_data_address
;
9657 remote_ops
.to_can_use_hw_breakpoint
= remote_check_watch_resources
;
9658 remote_ops
.to_insert_hw_breakpoint
= remote_insert_hw_breakpoint
;
9659 remote_ops
.to_remove_hw_breakpoint
= remote_remove_hw_breakpoint
;
9660 remote_ops
.to_insert_watchpoint
= remote_insert_watchpoint
;
9661 remote_ops
.to_remove_watchpoint
= remote_remove_watchpoint
;
9662 remote_ops
.to_kill
= remote_kill
;
9663 remote_ops
.to_load
= generic_load
;
9664 remote_ops
.to_mourn_inferior
= remote_mourn
;
9665 remote_ops
.to_thread_alive
= remote_thread_alive
;
9666 remote_ops
.to_find_new_threads
= remote_threads_info
;
9667 remote_ops
.to_pid_to_str
= remote_pid_to_str
;
9668 remote_ops
.to_extra_thread_info
= remote_threads_extra_info
;
9669 remote_ops
.to_stop
= remote_stop
;
9670 remote_ops
.to_xfer_partial
= remote_xfer_partial
;
9671 remote_ops
.to_rcmd
= remote_rcmd
;
9672 remote_ops
.to_log_command
= serial_log_command
;
9673 remote_ops
.to_get_thread_local_address
= remote_get_thread_local_address
;
9674 remote_ops
.to_stratum
= process_stratum
;
9675 remote_ops
.to_has_all_memory
= default_child_has_all_memory
;
9676 remote_ops
.to_has_memory
= default_child_has_memory
;
9677 remote_ops
.to_has_stack
= default_child_has_stack
;
9678 remote_ops
.to_has_registers
= default_child_has_registers
;
9679 remote_ops
.to_has_execution
= default_child_has_execution
;
9680 remote_ops
.to_has_thread_control
= tc_schedlock
; /* can lock scheduler */
9681 remote_ops
.to_can_execute_reverse
= remote_can_execute_reverse
;
9682 remote_ops
.to_magic
= OPS_MAGIC
;
9683 remote_ops
.to_memory_map
= remote_memory_map
;
9684 remote_ops
.to_flash_erase
= remote_flash_erase
;
9685 remote_ops
.to_flash_done
= remote_flash_done
;
9686 remote_ops
.to_read_description
= remote_read_description
;
9687 remote_ops
.to_search_memory
= remote_search_memory
;
9688 remote_ops
.to_can_async_p
= remote_can_async_p
;
9689 remote_ops
.to_is_async_p
= remote_is_async_p
;
9690 remote_ops
.to_async
= remote_async
;
9691 remote_ops
.to_async_mask
= remote_async_mask
;
9692 remote_ops
.to_terminal_inferior
= remote_terminal_inferior
;
9693 remote_ops
.to_terminal_ours
= remote_terminal_ours
;
9694 remote_ops
.to_supports_non_stop
= remote_supports_non_stop
;
9695 remote_ops
.to_supports_multi_process
= remote_supports_multi_process
;
9696 remote_ops
.to_trace_init
= remote_trace_init
;
9697 remote_ops
.to_download_tracepoint
= remote_download_tracepoint
;
9698 remote_ops
.to_download_trace_state_variable
= remote_download_trace_state_variable
;
9699 remote_ops
.to_trace_set_readonly_regions
= remote_trace_set_readonly_regions
;
9700 remote_ops
.to_trace_start
= remote_trace_start
;
9701 remote_ops
.to_get_trace_status
= remote_get_trace_status
;
9702 remote_ops
.to_trace_stop
= remote_trace_stop
;
9703 remote_ops
.to_trace_find
= remote_trace_find
;
9704 remote_ops
.to_get_trace_state_variable_value
= remote_get_trace_state_variable_value
;
9705 remote_ops
.to_save_trace_data
= remote_save_trace_data
;
9706 remote_ops
.to_upload_tracepoints
= remote_upload_tracepoints
;
9707 remote_ops
.to_upload_trace_state_variables
= remote_upload_trace_state_variables
;
9708 remote_ops
.to_get_raw_trace_data
= remote_get_raw_trace_data
;
9709 remote_ops
.to_set_disconnected_tracing
= remote_set_disconnected_tracing
;
9710 remote_ops
.to_core_of_thread
= remote_core_of_thread
;
9713 /* Set up the extended remote vector by making a copy of the standard
9714 remote vector and adding to it. */
9717 init_extended_remote_ops (void)
9719 extended_remote_ops
= remote_ops
;
9721 extended_remote_ops
.to_shortname
= "extended-remote";
9722 extended_remote_ops
.to_longname
=
9723 "Extended remote serial target in gdb-specific protocol";
9724 extended_remote_ops
.to_doc
=
9725 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
9726 Specify the serial device it is connected to (e.g. /dev/ttya).";
9727 extended_remote_ops
.to_open
= extended_remote_open
;
9728 extended_remote_ops
.to_create_inferior
= extended_remote_create_inferior
;
9729 extended_remote_ops
.to_mourn_inferior
= extended_remote_mourn
;
9730 extended_remote_ops
.to_detach
= extended_remote_detach
;
9731 extended_remote_ops
.to_attach
= extended_remote_attach
;
9732 extended_remote_ops
.to_kill
= extended_remote_kill
;
9736 remote_can_async_p (void)
9738 if (!target_async_permitted
)
9739 /* We only enable async when the user specifically asks for it. */
9742 /* We're async whenever the serial device is. */
9743 return remote_async_mask_value
&& serial_can_async_p (remote_desc
);
9747 remote_is_async_p (void)
9749 if (!target_async_permitted
)
9750 /* We only enable async when the user specifically asks for it. */
9753 /* We're async whenever the serial device is. */
9754 return remote_async_mask_value
&& serial_is_async_p (remote_desc
);
9757 /* Pass the SERIAL event on and up to the client. One day this code
9758 will be able to delay notifying the client of an event until the
9759 point where an entire packet has been received. */
9761 static void (*async_client_callback
) (enum inferior_event_type event_type
,
9763 static void *async_client_context
;
9764 static serial_event_ftype remote_async_serial_handler
;
9767 remote_async_serial_handler (struct serial
*scb
, void *context
)
9769 /* Don't propogate error information up to the client. Instead let
9770 the client find out about the error by querying the target. */
9771 async_client_callback (INF_REG_EVENT
, async_client_context
);
9775 remote_async_inferior_event_handler (gdb_client_data data
)
9777 inferior_event_handler (INF_REG_EVENT
, NULL
);
9781 remote_async_get_pending_events_handler (gdb_client_data data
)
9783 remote_get_pending_stop_replies ();
9787 remote_async (void (*callback
) (enum inferior_event_type event_type
,
9788 void *context
), void *context
)
9790 if (remote_async_mask_value
== 0)
9791 internal_error (__FILE__
, __LINE__
,
9792 _("Calling remote_async when async is masked"));
9794 if (callback
!= NULL
)
9796 serial_async (remote_desc
, remote_async_serial_handler
, NULL
);
9797 async_client_callback
= callback
;
9798 async_client_context
= context
;
9801 serial_async (remote_desc
, NULL
, NULL
);
9805 remote_async_mask (int new_mask
)
9807 int curr_mask
= remote_async_mask_value
;
9808 remote_async_mask_value
= new_mask
;
9813 set_remote_cmd (char *args
, int from_tty
)
9815 help_list (remote_set_cmdlist
, "set remote ", -1, gdb_stdout
);
9819 show_remote_cmd (char *args
, int from_tty
)
9821 /* We can't just use cmd_show_list here, because we want to skip
9822 the redundant "show remote Z-packet" and the legacy aliases. */
9823 struct cleanup
*showlist_chain
;
9824 struct cmd_list_element
*list
= remote_show_cmdlist
;
9826 showlist_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "showlist");
9827 for (; list
!= NULL
; list
= list
->next
)
9828 if (strcmp (list
->name
, "Z-packet") == 0)
9830 else if (list
->type
== not_set_cmd
)
9831 /* Alias commands are exactly like the original, except they
9832 don't have the normal type. */
9836 struct cleanup
*option_chain
9837 = make_cleanup_ui_out_tuple_begin_end (uiout
, "option");
9838 ui_out_field_string (uiout
, "name", list
->name
);
9839 ui_out_text (uiout
, ": ");
9840 if (list
->type
== show_cmd
)
9841 do_setshow_command ((char *) NULL
, from_tty
, list
);
9843 cmd_func (list
, NULL
, from_tty
);
9844 /* Close the tuple. */
9845 do_cleanups (option_chain
);
9848 /* Close the tuple. */
9849 do_cleanups (showlist_chain
);
9853 /* Function to be called whenever a new objfile (shlib) is detected. */
9855 remote_new_objfile (struct objfile
*objfile
)
9857 if (remote_desc
!= 0) /* Have a remote connection. */
9858 remote_check_symbols (objfile
);
9861 /* Pull all the tracepoints defined on the target and create local
9862 data structures representing them. We don't want to create real
9863 tracepoints yet, we don't want to mess up the user's existing
9867 remote_upload_tracepoints (struct uploaded_tp
**utpp
)
9869 struct remote_state
*rs
= get_remote_state ();
9872 /* Ask for a first packet of tracepoint definition. */
9874 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9876 while (*p
&& *p
!= 'l')
9878 parse_tracepoint_definition (p
, utpp
);
9879 /* Ask for another packet of tracepoint definition. */
9881 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9888 remote_upload_trace_state_variables (struct uploaded_tsv
**utsvp
)
9890 struct remote_state
*rs
= get_remote_state ();
9893 /* Ask for a first packet of variable definition. */
9895 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9897 while (*p
&& *p
!= 'l')
9899 parse_tsv_definition (p
, utsvp
);
9900 /* Ask for another packet of variable definition. */
9902 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9909 _initialize_remote (void)
9911 struct remote_state
*rs
;
9912 struct cmd_list_element
*cmd
;
9915 /* architecture specific data */
9916 remote_gdbarch_data_handle
=
9917 gdbarch_data_register_post_init (init_remote_state
);
9918 remote_g_packet_data_handle
=
9919 gdbarch_data_register_pre_init (remote_g_packet_data_init
);
9921 /* Initialize the per-target state. At the moment there is only one
9922 of these, not one per target. Only one target is active at a
9923 time. The default buffer size is unimportant; it will be expanded
9924 whenever a larger buffer is needed. */
9925 rs
= get_remote_state_raw ();
9927 rs
->buf
= xmalloc (rs
->buf_size
);
9930 add_target (&remote_ops
);
9932 init_extended_remote_ops ();
9933 add_target (&extended_remote_ops
);
9935 /* Hook into new objfile notification. */
9936 observer_attach_new_objfile (remote_new_objfile
);
9938 /* Set up signal handlers. */
9939 sigint_remote_token
=
9940 create_async_signal_handler (async_remote_interrupt
, NULL
);
9941 sigint_remote_twice_token
=
9942 create_async_signal_handler (inferior_event_handler_wrapper
, NULL
);
9945 init_remote_threadtests ();
9948 /* set/show remote ... */
9950 add_prefix_cmd ("remote", class_maintenance
, set_remote_cmd
, _("\
9951 Remote protocol specific variables\n\
9952 Configure various remote-protocol specific variables such as\n\
9953 the packets being used"),
9954 &remote_set_cmdlist
, "set remote ",
9955 0 /* allow-unknown */, &setlist
);
9956 add_prefix_cmd ("remote", class_maintenance
, show_remote_cmd
, _("\
9957 Remote protocol specific variables\n\
9958 Configure various remote-protocol specific variables such as\n\
9959 the packets being used"),
9960 &remote_show_cmdlist
, "show remote ",
9961 0 /* allow-unknown */, &showlist
);
9963 add_cmd ("compare-sections", class_obscure
, compare_sections_command
, _("\
9964 Compare section data on target to the exec file.\n\
9965 Argument is a single section name (default: all loaded sections)."),
9968 add_cmd ("packet", class_maintenance
, packet_command
, _("\
9969 Send an arbitrary packet to a remote target.\n\
9970 maintenance packet TEXT\n\
9971 If GDB is talking to an inferior via the GDB serial protocol, then\n\
9972 this command sends the string TEXT to the inferior, and displays the\n\
9973 response packet. GDB supplies the initial `$' character, and the\n\
9974 terminating `#' character and checksum."),
9977 add_setshow_boolean_cmd ("remotebreak", no_class
, &remote_break
, _("\
9978 Set whether to send break if interrupted."), _("\
9979 Show whether to send break if interrupted."), _("\
9980 If set, a break, instead of a cntrl-c, is sent to the remote target."),
9981 set_remotebreak
, show_remotebreak
,
9982 &setlist
, &showlist
);
9983 cmd_name
= "remotebreak";
9984 cmd
= lookup_cmd (&cmd_name
, setlist
, "", -1, 1);
9985 deprecate_cmd (cmd
, "set remote interrupt-sequence");
9986 cmd_name
= "remotebreak"; /* needed because lookup_cmd updates the pointer */
9987 cmd
= lookup_cmd (&cmd_name
, showlist
, "", -1, 1);
9988 deprecate_cmd (cmd
, "show remote interrupt-sequence");
9990 add_setshow_enum_cmd ("interrupt-sequence", class_support
,
9991 interrupt_sequence_modes
, &interrupt_sequence_mode
, _("\
9992 Set interrupt sequence to remote target."), _("\
9993 Show interrupt sequence to remote target."), _("\
9994 Valid value is \"Ctrl-C\", \"BREAK\" or \"BREAK-g\". The default is \"Ctrl-C\"."),
9995 NULL
, show_interrupt_sequence
,
9996 &remote_set_cmdlist
,
9997 &remote_show_cmdlist
);
9999 add_setshow_boolean_cmd ("interrupt-on-connect", class_support
,
10000 &interrupt_on_connect
, _("\
10001 Set whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \
10002 Show whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \
10003 If set, interrupt sequence is sent to remote target."),
10005 &remote_set_cmdlist
, &remote_show_cmdlist
);
10007 /* Install commands for configuring memory read/write packets. */
10009 add_cmd ("remotewritesize", no_class
, set_memory_write_packet_size
, _("\
10010 Set the maximum number of bytes per memory write packet (deprecated)."),
10012 add_cmd ("remotewritesize", no_class
, show_memory_write_packet_size
, _("\
10013 Show the maximum number of bytes per memory write packet (deprecated)."),
10015 add_cmd ("memory-write-packet-size", no_class
,
10016 set_memory_write_packet_size
, _("\
10017 Set the maximum number of bytes per memory-write packet.\n\
10018 Specify the number of bytes in a packet or 0 (zero) for the\n\
10019 default packet size. The actual limit is further reduced\n\
10020 dependent on the target. Specify ``fixed'' to disable the\n\
10021 further restriction and ``limit'' to enable that restriction."),
10022 &remote_set_cmdlist
);
10023 add_cmd ("memory-read-packet-size", no_class
,
10024 set_memory_read_packet_size
, _("\
10025 Set the maximum number of bytes per memory-read packet.\n\
10026 Specify the number of bytes in a packet or 0 (zero) for the\n\
10027 default packet size. The actual limit is further reduced\n\
10028 dependent on the target. Specify ``fixed'' to disable the\n\
10029 further restriction and ``limit'' to enable that restriction."),
10030 &remote_set_cmdlist
);
10031 add_cmd ("memory-write-packet-size", no_class
,
10032 show_memory_write_packet_size
,
10033 _("Show the maximum number of bytes per memory-write packet."),
10034 &remote_show_cmdlist
);
10035 add_cmd ("memory-read-packet-size", no_class
,
10036 show_memory_read_packet_size
,
10037 _("Show the maximum number of bytes per memory-read packet."),
10038 &remote_show_cmdlist
);
10040 add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class
,
10041 &remote_hw_watchpoint_limit
, _("\
10042 Set the maximum number of target hardware watchpoints."), _("\
10043 Show the maximum number of target hardware watchpoints."), _("\
10044 Specify a negative limit for unlimited."),
10045 NULL
, NULL
, /* FIXME: i18n: The maximum number of target hardware watchpoints is %s. */
10046 &remote_set_cmdlist
, &remote_show_cmdlist
);
10047 add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class
,
10048 &remote_hw_breakpoint_limit
, _("\
10049 Set the maximum number of target hardware breakpoints."), _("\
10050 Show the maximum number of target hardware breakpoints."), _("\
10051 Specify a negative limit for unlimited."),
10052 NULL
, NULL
, /* FIXME: i18n: The maximum number of target hardware breakpoints is %s. */
10053 &remote_set_cmdlist
, &remote_show_cmdlist
);
10055 add_setshow_integer_cmd ("remoteaddresssize", class_obscure
,
10056 &remote_address_size
, _("\
10057 Set the maximum size of the address (in bits) in a memory packet."), _("\
10058 Show the maximum size of the address (in bits) in a memory packet."), NULL
,
10060 NULL
, /* FIXME: i18n: */
10061 &setlist
, &showlist
);
10063 add_packet_config_cmd (&remote_protocol_packets
[PACKET_X
],
10064 "X", "binary-download", 1);
10066 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vCont
],
10067 "vCont", "verbose-resume", 0);
10069 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QPassSignals
],
10070 "QPassSignals", "pass-signals", 0);
10072 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSymbol
],
10073 "qSymbol", "symbol-lookup", 0);
10075 add_packet_config_cmd (&remote_protocol_packets
[PACKET_P
],
10076 "P", "set-register", 1);
10078 add_packet_config_cmd (&remote_protocol_packets
[PACKET_p
],
10079 "p", "fetch-register", 1);
10081 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z0
],
10082 "Z0", "software-breakpoint", 0);
10084 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z1
],
10085 "Z1", "hardware-breakpoint", 0);
10087 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z2
],
10088 "Z2", "write-watchpoint", 0);
10090 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z3
],
10091 "Z3", "read-watchpoint", 0);
10093 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z4
],
10094 "Z4", "access-watchpoint", 0);
10096 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_auxv
],
10097 "qXfer:auxv:read", "read-aux-vector", 0);
10099 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_features
],
10100 "qXfer:features:read", "target-features", 0);
10102 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_libraries
],
10103 "qXfer:libraries:read", "library-info", 0);
10105 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_memory_map
],
10106 "qXfer:memory-map:read", "memory-map", 0);
10108 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_spu_read
],
10109 "qXfer:spu:read", "read-spu-object", 0);
10111 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_spu_write
],
10112 "qXfer:spu:write", "write-spu-object", 0);
10114 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_osdata
],
10115 "qXfer:osdata:read", "osdata", 0);
10117 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_threads
],
10118 "qXfer:threads:read", "threads", 0);
10120 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_siginfo_read
],
10121 "qXfer:siginfo:read", "read-siginfo-object", 0);
10123 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_siginfo_write
],
10124 "qXfer:siginfo:write", "write-siginfo-object", 0);
10126 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qGetTLSAddr
],
10127 "qGetTLSAddr", "get-thread-local-storage-address",
10130 add_packet_config_cmd (&remote_protocol_packets
[PACKET_bc
],
10131 "bc", "reverse-continue", 0);
10133 add_packet_config_cmd (&remote_protocol_packets
[PACKET_bs
],
10134 "bs", "reverse-step", 0);
10136 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSupported
],
10137 "qSupported", "supported-packets", 0);
10139 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSearch_memory
],
10140 "qSearch:memory", "search-memory", 0);
10142 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_open
],
10143 "vFile:open", "hostio-open", 0);
10145 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_pread
],
10146 "vFile:pread", "hostio-pread", 0);
10148 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_pwrite
],
10149 "vFile:pwrite", "hostio-pwrite", 0);
10151 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_close
],
10152 "vFile:close", "hostio-close", 0);
10154 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_unlink
],
10155 "vFile:unlink", "hostio-unlink", 0);
10157 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vAttach
],
10158 "vAttach", "attach", 0);
10160 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vRun
],
10163 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QStartNoAckMode
],
10164 "QStartNoAckMode", "noack", 0);
10166 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vKill
],
10167 "vKill", "kill", 0);
10169 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qAttached
],
10170 "qAttached", "query-attached", 0);
10172 add_packet_config_cmd (&remote_protocol_packets
[PACKET_ConditionalTracepoints
],
10173 "ConditionalTracepoints", "conditional-tracepoints", 0);
10174 add_packet_config_cmd (&remote_protocol_packets
[PACKET_FastTracepoints
],
10175 "FastTracepoints", "fast-tracepoints", 0);
10177 /* Keep the old ``set remote Z-packet ...'' working. Each individual
10178 Z sub-packet has its own set and show commands, but users may
10179 have sets to this variable in their .gdbinit files (or in their
10181 add_setshow_auto_boolean_cmd ("Z-packet", class_obscure
,
10182 &remote_Z_packet_detect
, _("\
10183 Set use of remote protocol `Z' packets"), _("\
10184 Show use of remote protocol `Z' packets "), _("\
10185 When set, GDB will attempt to use the remote breakpoint and watchpoint\n\
10187 set_remote_protocol_Z_packet_cmd
,
10188 show_remote_protocol_Z_packet_cmd
, /* FIXME: i18n: Use of remote protocol `Z' packets is %s. */
10189 &remote_set_cmdlist
, &remote_show_cmdlist
);
10191 add_prefix_cmd ("remote", class_files
, remote_command
, _("\
10192 Manipulate files on the remote system\n\
10193 Transfer files to and from the remote target system."),
10194 &remote_cmdlist
, "remote ",
10195 0 /* allow-unknown */, &cmdlist
);
10197 add_cmd ("put", class_files
, remote_put_command
,
10198 _("Copy a local file to the remote system."),
10201 add_cmd ("get", class_files
, remote_get_command
,
10202 _("Copy a remote file to the local system."),
10205 add_cmd ("delete", class_files
, remote_delete_command
,
10206 _("Delete a remote file."),
10209 remote_exec_file
= xstrdup ("");
10210 add_setshow_string_noescape_cmd ("exec-file", class_files
,
10211 &remote_exec_file
, _("\
10212 Set the remote pathname for \"run\""), _("\
10213 Show the remote pathname for \"run\""), NULL
, NULL
, NULL
,
10214 &remote_set_cmdlist
, &remote_show_cmdlist
);
10216 /* Eventually initialize fileio. See fileio.c */
10217 initialize_remote_fileio (remote_set_cmdlist
, remote_show_cmdlist
);
10219 /* Take advantage of the fact that the LWP field is not used, to tag
10220 special ptids with it set to != 0. */
10221 magic_null_ptid
= ptid_build (42000, 1, -1);
10222 not_sent_ptid
= ptid_build (42000, 1, -2);
10223 any_thread_ptid
= ptid_build (42000, 1, 0);
10225 target_buf_size
= 2048;
10226 target_buf
= xmalloc (target_buf_size
);