1 /* Remote target communications for serial-line targets in custom GDB protocol
3 Copyright (C) 1988-2016 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
20 /* See the GDB User Guide for details of the GDB remote protocol. */
30 /*#include "terminal.h" */
33 #include "gdb-stabs.h"
34 #include "gdbthread.h"
36 #include "remote-notif.h"
41 #include "cli/cli-decode.h"
42 #include "cli/cli-setshow.h"
43 #include "target-descriptions.h"
45 #include "filestuff.h"
50 #include "gdb_sys_time.h"
52 #include "event-loop.h"
53 #include "event-top.h"
59 #include "gdbcore.h" /* for exec_bfd */
61 #include "remote-fileio.h"
62 #include "gdb/fileio.h"
64 #include "xml-support.h"
66 #include "memory-map.h"
68 #include "tracepoint.h"
74 /* Temp hacks for tracepoint encoding migration. */
75 static char *target_buf
;
76 static long target_buf_size
;
78 /* Per-program-space data key. */
79 static const struct program_space_data
*remote_pspace_data
;
81 /* The variable registered as the control variable used by the
82 remote exec-file commands. While the remote exec-file setting is
83 per-program-space, the set/show machinery uses this as the
84 location of the remote exec-file value. */
85 static char *remote_exec_file_var
;
87 /* The size to align memory write packets, when practical. The protocol
88 does not guarantee any alignment, and gdb will generate short
89 writes and unaligned writes, but even as a best-effort attempt this
90 can improve bulk transfers. For instance, if a write is misaligned
91 relative to the target's data bus, the stub may need to make an extra
92 round trip fetching data from the target. This doesn't make a
93 huge difference, but it's easy to do, so we try to be helpful.
95 The alignment chosen is arbitrary; usually data bus width is
96 important here, not the possibly larger cache line size. */
97 enum { REMOTE_ALIGN_WRITES
= 16 };
99 /* Prototypes for local functions. */
100 static void async_cleanup_sigint_signal_handler (void *dummy
);
101 static int getpkt_sane (char **buf
, long *sizeof_buf
, int forever
);
102 static int getpkt_or_notif_sane (char **buf
, long *sizeof_buf
,
103 int forever
, int *is_notif
);
105 static void async_handle_remote_sigint (int);
106 static void async_handle_remote_sigint_twice (int);
108 static void remote_files_info (struct target_ops
*ignore
);
110 static void remote_prepare_to_store (struct target_ops
*self
,
111 struct regcache
*regcache
);
113 static void remote_open_1 (const char *, int, struct target_ops
*,
116 static void remote_close (struct target_ops
*self
);
120 static int remote_vkill (int pid
, struct remote_state
*rs
);
122 static void remote_kill_k (void);
124 static void remote_mourn (struct target_ops
*ops
);
126 static void extended_remote_restart (void);
128 static void remote_send (char **buf
, long *sizeof_buf_p
);
130 static int readchar (int timeout
);
132 static void remote_serial_write (const char *str
, int len
);
134 static void remote_kill (struct target_ops
*ops
);
136 static int remote_can_async_p (struct target_ops
*);
138 static int remote_is_async_p (struct target_ops
*);
140 static void remote_async (struct target_ops
*ops
, int enable
);
142 static void remote_thread_events (struct target_ops
*ops
, int enable
);
144 static void sync_remote_interrupt_twice (int signo
);
146 static void interrupt_query (void);
148 static void set_general_thread (struct ptid ptid
);
149 static void set_continue_thread (struct ptid ptid
);
151 static void get_offsets (void);
153 static void skip_frame (void);
155 static long read_frame (char **buf_p
, long *sizeof_buf
);
157 static int hexnumlen (ULONGEST num
);
159 static void init_remote_ops (void);
161 static void init_extended_remote_ops (void);
163 static void remote_stop (struct target_ops
*self
, ptid_t
);
165 static int stubhex (int ch
);
167 static int hexnumstr (char *, ULONGEST
);
169 static int hexnumnstr (char *, ULONGEST
, int);
171 static CORE_ADDR
remote_address_masked (CORE_ADDR
);
173 static void print_packet (const char *);
175 static void compare_sections_command (char *, int);
177 static void packet_command (char *, int);
179 static int stub_unpack_int (char *buff
, int fieldlength
);
181 static ptid_t
remote_current_thread (ptid_t oldptid
);
183 static int putpkt_binary (const char *buf
, int cnt
);
185 static void check_binary_download (CORE_ADDR addr
);
187 struct packet_config
;
189 static void show_packet_config_cmd (struct packet_config
*config
);
191 static void show_remote_protocol_packet_cmd (struct ui_file
*file
,
193 struct cmd_list_element
*c
,
196 static char *write_ptid (char *buf
, const char *endbuf
, ptid_t ptid
);
197 static ptid_t
read_ptid (char *buf
, char **obuf
);
199 static void remote_set_permissions (struct target_ops
*self
);
201 static int remote_get_trace_status (struct target_ops
*self
,
202 struct trace_status
*ts
);
204 static int remote_upload_tracepoints (struct target_ops
*self
,
205 struct uploaded_tp
**utpp
);
207 static int remote_upload_trace_state_variables (struct target_ops
*self
,
208 struct uploaded_tsv
**utsvp
);
210 static void remote_query_supported (void);
212 static void remote_check_symbols (void);
214 void _initialize_remote (void);
217 static void stop_reply_xfree (struct stop_reply
*);
218 static void remote_parse_stop_reply (char *, struct stop_reply
*);
219 static void push_stop_reply (struct stop_reply
*);
220 static void discard_pending_stop_replies_in_queue (struct remote_state
*);
221 static int peek_stop_reply (ptid_t ptid
);
223 struct threads_listing_context
;
224 static void remove_new_fork_children (struct threads_listing_context
*);
226 static void remote_async_inferior_event_handler (gdb_client_data
);
228 static void remote_terminal_ours (struct target_ops
*self
);
230 static int remote_read_description_p (struct target_ops
*target
);
232 static void remote_console_output (char *msg
);
234 static int remote_supports_cond_breakpoints (struct target_ops
*self
);
236 static int remote_can_run_breakpoint_commands (struct target_ops
*self
);
238 static void remote_btrace_reset (void);
240 static int stop_reply_queue_length (void);
242 static void readahead_cache_invalidate (void);
246 static struct cmd_list_element
*remote_cmdlist
;
248 /* For "set remote" and "show remote". */
250 static struct cmd_list_element
*remote_set_cmdlist
;
251 static struct cmd_list_element
*remote_show_cmdlist
;
253 /* Stub vCont actions support.
255 Each field is a boolean flag indicating whether the stub reports
256 support for the corresponding action. */
258 struct vCont_action_support
273 /* Controls whether GDB is willing to use range stepping. */
275 static int use_range_stepping
= 1;
277 #define OPAQUETHREADBYTES 8
279 /* a 64 bit opaque identifier */
280 typedef unsigned char threadref
[OPAQUETHREADBYTES
];
282 /* About this many threadisds fit in a packet. */
284 #define MAXTHREADLISTRESULTS 32
286 /* Data for the vFile:pread readahead cache. */
288 struct readahead_cache
290 /* The file descriptor for the file that is being cached. -1 if the
294 /* The offset into the file that the cache buffer corresponds
298 /* The buffer holding the cache contents. */
300 /* The buffer's size. We try to read as much as fits into a packet
304 /* Cache hit and miss counters. */
309 /* Description of the remote protocol state for the currently
310 connected target. This is per-target state, and independent of the
311 selected architecture. */
315 /* A buffer to use for incoming packets, and its current size. The
316 buffer is grown dynamically for larger incoming packets.
317 Outgoing packets may also be constructed in this buffer.
318 BUF_SIZE is always at least REMOTE_PACKET_SIZE;
319 REMOTE_PACKET_SIZE should be used to limit the length of outgoing
324 /* True if we're going through initial connection setup (finding out
325 about the remote side's threads, relocating symbols, etc.). */
328 /* If we negotiated packet size explicitly (and thus can bypass
329 heuristics for the largest packet size that will not overflow
330 a buffer in the stub), this will be set to that packet size.
331 Otherwise zero, meaning to use the guessed size. */
332 long explicit_packet_size
;
334 /* remote_wait is normally called when the target is running and
335 waits for a stop reply packet. But sometimes we need to call it
336 when the target is already stopped. We can send a "?" packet
337 and have remote_wait read the response. Or, if we already have
338 the response, we can stash it in BUF and tell remote_wait to
339 skip calling getpkt. This flag is set when BUF contains a
340 stop reply packet and the target is not waiting. */
341 int cached_wait_status
;
343 /* True, if in no ack mode. That is, neither GDB nor the stub will
344 expect acks from each other. The connection is assumed to be
348 /* True if we're connected in extended remote mode. */
351 /* True if we resumed the target and we're waiting for the target to
352 stop. In the mean time, we can't start another command/query.
353 The remote server wouldn't be ready to process it, so we'd
354 timeout waiting for a reply that would never come and eventually
355 we'd close the connection. This can happen in asynchronous mode
356 because we allow GDB commands while the target is running. */
357 int waiting_for_stop_reply
;
359 /* The status of the stub support for the various vCont actions. */
360 struct vCont_action_support supports_vCont
;
362 /* Nonzero if the user has pressed Ctrl-C, but the target hasn't
363 responded to that. */
366 /* Descriptor for I/O to remote machine. Initialize it to NULL so that
367 remote_open knows that we don't have a file open when the program
369 struct serial
*remote_desc
;
371 /* These are the threads which we last sent to the remote system. The
372 TID member will be -1 for all or -2 for not sent yet. */
373 ptid_t general_thread
;
374 ptid_t continue_thread
;
376 /* This is the traceframe which we last selected on the remote system.
377 It will be -1 if no traceframe is selected. */
378 int remote_traceframe_number
;
380 char *last_pass_packet
;
382 /* The last QProgramSignals packet sent to the target. We bypass
383 sending a new program signals list down to the target if the new
384 packet is exactly the same as the last we sent. IOW, we only let
385 the target know about program signals list changes. */
386 char *last_program_signals_packet
;
388 enum gdb_signal last_sent_signal
;
392 char *finished_object
;
393 char *finished_annex
;
394 ULONGEST finished_offset
;
396 /* Should we try the 'ThreadInfo' query packet?
398 This variable (NOT available to the user: auto-detect only!)
399 determines whether GDB will use the new, simpler "ThreadInfo"
400 query or the older, more complex syntax for thread queries.
401 This is an auto-detect variable (set to true at each connect,
402 and set to false when the target fails to recognize it). */
403 int use_threadinfo_query
;
404 int use_threadextra_query
;
406 threadref echo_nextthread
;
407 threadref nextthread
;
408 threadref resultthreadlist
[MAXTHREADLISTRESULTS
];
410 /* The state of remote notification. */
411 struct remote_notif_state
*notif_state
;
413 /* The branch trace configuration. */
414 struct btrace_config btrace_config
;
416 /* The argument to the last "vFile:setfs:" packet we sent, used
417 to avoid sending repeated unnecessary "vFile:setfs:" packets.
418 Initialized to -1 to indicate that no "vFile:setfs:" packet
419 has yet been sent. */
422 /* A readahead cache for vFile:pread. Often, reading a binary
423 involves a sequence of small reads. E.g., when parsing an ELF
424 file. A readahead cache helps mostly the case of remote
425 debugging on a connection with higher latency, due to the
426 request/reply nature of the RSP. We only cache data for a single
427 file descriptor at a time. */
428 struct readahead_cache readahead_cache
;
431 /* Private data that we'll store in (struct thread_info)->private. */
432 struct private_thread_info
438 /* Whether the target stopped for a breakpoint/watchpoint. */
439 enum target_stop_reason stop_reason
;
441 /* This is set to the data address of the access causing the target
442 to stop for a watchpoint. */
443 CORE_ADDR watch_data_address
;
447 free_private_thread_info (struct private_thread_info
*info
)
454 /* This data could be associated with a target, but we do not always
455 have access to the current target when we need it, so for now it is
456 static. This will be fine for as long as only one target is in use
458 static struct remote_state
*remote_state
;
460 static struct remote_state
*
461 get_remote_state_raw (void)
466 /* Allocate a new struct remote_state with xmalloc, initialize it, and
469 static struct remote_state
*
470 new_remote_state (void)
472 struct remote_state
*result
= XCNEW (struct remote_state
);
474 /* The default buffer size is unimportant; it will be expanded
475 whenever a larger buffer is needed. */
476 result
->buf_size
= 400;
477 result
->buf
= (char *) xmalloc (result
->buf_size
);
478 result
->remote_traceframe_number
= -1;
479 result
->last_sent_signal
= GDB_SIGNAL_0
;
485 /* Description of the remote protocol for a given architecture. */
489 long offset
; /* Offset into G packet. */
490 long regnum
; /* GDB's internal register number. */
491 LONGEST pnum
; /* Remote protocol register number. */
492 int in_g_packet
; /* Always part of G packet. */
493 /* long size in bytes; == register_size (target_gdbarch (), regnum);
495 /* char *name; == gdbarch_register_name (target_gdbarch (), regnum);
499 struct remote_arch_state
501 /* Description of the remote protocol registers. */
502 long sizeof_g_packet
;
504 /* Description of the remote protocol registers indexed by REGNUM
505 (making an array gdbarch_num_regs in size). */
506 struct packet_reg
*regs
;
508 /* This is the size (in chars) of the first response to the ``g''
509 packet. It is used as a heuristic when determining the maximum
510 size of memory-read and memory-write packets. A target will
511 typically only reserve a buffer large enough to hold the ``g''
512 packet. The size does not include packet overhead (headers and
514 long actual_register_packet_size
;
516 /* This is the maximum size (in chars) of a non read/write packet.
517 It is also used as a cap on the size of read/write packets. */
518 long remote_packet_size
;
521 /* Utility: generate error from an incoming stub packet. */
523 trace_error (char *buf
)
526 return; /* not an error msg */
529 case '1': /* malformed packet error */
530 if (*++buf
== '0') /* general case: */
531 error (_("remote.c: error in outgoing packet."));
533 error (_("remote.c: error in outgoing packet at field #%ld."),
534 strtol (buf
, NULL
, 16));
536 error (_("Target returns error code '%s'."), buf
);
540 /* Utility: wait for reply from stub, while accepting "O" packets. */
542 remote_get_noisy_reply (char **buf_p
,
545 do /* Loop on reply from remote stub. */
549 QUIT
; /* Allow user to bail out with ^C. */
550 getpkt (buf_p
, sizeof_buf
, 0);
554 else if (startswith (buf
, "qRelocInsn:"))
557 CORE_ADDR from
, to
, org_to
;
559 int adjusted_size
= 0;
562 p
= buf
+ strlen ("qRelocInsn:");
563 pp
= unpack_varlen_hex (p
, &ul
);
565 error (_("invalid qRelocInsn packet: %s"), buf
);
569 unpack_varlen_hex (p
, &ul
);
576 gdbarch_relocate_instruction (target_gdbarch (), &to
, from
);
579 CATCH (ex
, RETURN_MASK_ALL
)
581 if (ex
.error
== MEMORY_ERROR
)
583 /* Propagate memory errors silently back to the
584 target. The stub may have limited the range of
585 addresses we can write to, for example. */
589 /* Something unexpectedly bad happened. Be verbose
590 so we can tell what, and propagate the error back
591 to the stub, so it doesn't get stuck waiting for
593 exception_fprintf (gdb_stderr
, ex
,
594 _("warning: relocating instruction: "));
602 adjusted_size
= to
- org_to
;
604 xsnprintf (buf
, *sizeof_buf
, "qRelocInsn:%x", adjusted_size
);
608 else if (buf
[0] == 'O' && buf
[1] != 'K')
609 remote_console_output (buf
+ 1); /* 'O' message from stub */
611 return buf
; /* Here's the actual reply. */
616 /* Handle for retreving the remote protocol data from gdbarch. */
617 static struct gdbarch_data
*remote_gdbarch_data_handle
;
619 static struct remote_arch_state
*
620 get_remote_arch_state (void)
622 gdb_assert (target_gdbarch () != NULL
);
623 return ((struct remote_arch_state
*)
624 gdbarch_data (target_gdbarch (), remote_gdbarch_data_handle
));
627 /* Fetch the global remote target state. */
629 static struct remote_state
*
630 get_remote_state (void)
632 /* Make sure that the remote architecture state has been
633 initialized, because doing so might reallocate rs->buf. Any
634 function which calls getpkt also needs to be mindful of changes
635 to rs->buf, but this call limits the number of places which run
637 get_remote_arch_state ();
639 return get_remote_state_raw ();
642 /* Cleanup routine for the remote module's pspace data. */
645 remote_pspace_data_cleanup (struct program_space
*pspace
, void *arg
)
647 char *remote_exec_file
= (char *) arg
;
649 xfree (remote_exec_file
);
652 /* Fetch the remote exec-file from the current program space. */
655 get_remote_exec_file (void)
657 char *remote_exec_file
;
660 = (char *) program_space_data (current_program_space
,
662 if (remote_exec_file
== NULL
)
665 return remote_exec_file
;
668 /* Set the remote exec file for PSPACE. */
671 set_pspace_remote_exec_file (struct program_space
*pspace
,
672 char *remote_exec_file
)
674 char *old_file
= (char *) program_space_data (pspace
, remote_pspace_data
);
677 set_program_space_data (pspace
, remote_pspace_data
,
678 xstrdup (remote_exec_file
));
681 /* The "set/show remote exec-file" set command hook. */
684 set_remote_exec_file (char *ignored
, int from_tty
,
685 struct cmd_list_element
*c
)
687 gdb_assert (remote_exec_file_var
!= NULL
);
688 set_pspace_remote_exec_file (current_program_space
, remote_exec_file_var
);
691 /* The "set/show remote exec-file" show command hook. */
694 show_remote_exec_file (struct ui_file
*file
, int from_tty
,
695 struct cmd_list_element
*cmd
, const char *value
)
697 fprintf_filtered (file
, "%s\n", remote_exec_file_var
);
701 compare_pnums (const void *lhs_
, const void *rhs_
)
703 const struct packet_reg
* const *lhs
704 = (const struct packet_reg
* const *) lhs_
;
705 const struct packet_reg
* const *rhs
706 = (const struct packet_reg
* const *) rhs_
;
708 if ((*lhs
)->pnum
< (*rhs
)->pnum
)
710 else if ((*lhs
)->pnum
== (*rhs
)->pnum
)
717 map_regcache_remote_table (struct gdbarch
*gdbarch
, struct packet_reg
*regs
)
719 int regnum
, num_remote_regs
, offset
;
720 struct packet_reg
**remote_regs
;
722 for (regnum
= 0; regnum
< gdbarch_num_regs (gdbarch
); regnum
++)
724 struct packet_reg
*r
= ®s
[regnum
];
726 if (register_size (gdbarch
, regnum
) == 0)
727 /* Do not try to fetch zero-sized (placeholder) registers. */
730 r
->pnum
= gdbarch_remote_register_number (gdbarch
, regnum
);
735 /* Define the g/G packet format as the contents of each register
736 with a remote protocol number, in order of ascending protocol
739 remote_regs
= XALLOCAVEC (struct packet_reg
*, gdbarch_num_regs (gdbarch
));
740 for (num_remote_regs
= 0, regnum
= 0;
741 regnum
< gdbarch_num_regs (gdbarch
);
743 if (regs
[regnum
].pnum
!= -1)
744 remote_regs
[num_remote_regs
++] = ®s
[regnum
];
746 qsort (remote_regs
, num_remote_regs
, sizeof (struct packet_reg
*),
749 for (regnum
= 0, offset
= 0; regnum
< num_remote_regs
; regnum
++)
751 remote_regs
[regnum
]->in_g_packet
= 1;
752 remote_regs
[regnum
]->offset
= offset
;
753 offset
+= register_size (gdbarch
, remote_regs
[regnum
]->regnum
);
759 /* Given the architecture described by GDBARCH, return the remote
760 protocol register's number and the register's offset in the g/G
761 packets of GDB register REGNUM, in PNUM and POFFSET respectively.
762 If the target does not have a mapping for REGNUM, return false,
763 otherwise, return true. */
766 remote_register_number_and_offset (struct gdbarch
*gdbarch
, int regnum
,
767 int *pnum
, int *poffset
)
769 struct packet_reg
*regs
;
770 struct cleanup
*old_chain
;
772 gdb_assert (regnum
< gdbarch_num_regs (gdbarch
));
774 regs
= XCNEWVEC (struct packet_reg
, gdbarch_num_regs (gdbarch
));
775 old_chain
= make_cleanup (xfree
, regs
);
777 map_regcache_remote_table (gdbarch
, regs
);
779 *pnum
= regs
[regnum
].pnum
;
780 *poffset
= regs
[regnum
].offset
;
782 do_cleanups (old_chain
);
788 init_remote_state (struct gdbarch
*gdbarch
)
790 struct remote_state
*rs
= get_remote_state_raw ();
791 struct remote_arch_state
*rsa
;
793 rsa
= GDBARCH_OBSTACK_ZALLOC (gdbarch
, struct remote_arch_state
);
795 /* Use the architecture to build a regnum<->pnum table, which will be
796 1:1 unless a feature set specifies otherwise. */
797 rsa
->regs
= GDBARCH_OBSTACK_CALLOC (gdbarch
,
798 gdbarch_num_regs (gdbarch
),
801 /* Record the maximum possible size of the g packet - it may turn out
803 rsa
->sizeof_g_packet
= map_regcache_remote_table (gdbarch
, rsa
->regs
);
805 /* Default maximum number of characters in a packet body. Many
806 remote stubs have a hardwired buffer size of 400 bytes
807 (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used
808 as the maximum packet-size to ensure that the packet and an extra
809 NUL character can always fit in the buffer. This stops GDB
810 trashing stubs that try to squeeze an extra NUL into what is
811 already a full buffer (As of 1999-12-04 that was most stubs). */
812 rsa
->remote_packet_size
= 400 - 1;
814 /* This one is filled in when a ``g'' packet is received. */
815 rsa
->actual_register_packet_size
= 0;
817 /* Should rsa->sizeof_g_packet needs more space than the
818 default, adjust the size accordingly. Remember that each byte is
819 encoded as two characters. 32 is the overhead for the packet
820 header / footer. NOTE: cagney/1999-10-26: I suspect that 8
821 (``$NN:G...#NN'') is a better guess, the below has been padded a
823 if (rsa
->sizeof_g_packet
> ((rsa
->remote_packet_size
- 32) / 2))
824 rsa
->remote_packet_size
= (rsa
->sizeof_g_packet
* 2 + 32);
826 /* Make sure that the packet buffer is plenty big enough for
827 this architecture. */
828 if (rs
->buf_size
< rsa
->remote_packet_size
)
830 rs
->buf_size
= 2 * rsa
->remote_packet_size
;
831 rs
->buf
= (char *) xrealloc (rs
->buf
, rs
->buf_size
);
837 /* Return the current allowed size of a remote packet. This is
838 inferred from the current architecture, and should be used to
839 limit the length of outgoing packets. */
841 get_remote_packet_size (void)
843 struct remote_state
*rs
= get_remote_state ();
844 struct remote_arch_state
*rsa
= get_remote_arch_state ();
846 if (rs
->explicit_packet_size
)
847 return rs
->explicit_packet_size
;
849 return rsa
->remote_packet_size
;
852 static struct packet_reg
*
853 packet_reg_from_regnum (struct remote_arch_state
*rsa
, long regnum
)
855 if (regnum
< 0 && regnum
>= gdbarch_num_regs (target_gdbarch ()))
859 struct packet_reg
*r
= &rsa
->regs
[regnum
];
861 gdb_assert (r
->regnum
== regnum
);
866 static struct packet_reg
*
867 packet_reg_from_pnum (struct remote_arch_state
*rsa
, LONGEST pnum
)
871 for (i
= 0; i
< gdbarch_num_regs (target_gdbarch ()); i
++)
873 struct packet_reg
*r
= &rsa
->regs
[i
];
881 static struct target_ops remote_ops
;
883 static struct target_ops extended_remote_ops
;
885 /* FIXME: cagney/1999-09-23: Even though getpkt was called with
886 ``forever'' still use the normal timeout mechanism. This is
887 currently used by the ASYNC code to guarentee that target reads
888 during the initial connect always time-out. Once getpkt has been
889 modified to return a timeout indication and, in turn
890 remote_wait()/wait_for_inferior() have gained a timeout parameter
892 static int wait_forever_enabled_p
= 1;
894 /* Allow the user to specify what sequence to send to the remote
895 when he requests a program interruption: Although ^C is usually
896 what remote systems expect (this is the default, here), it is
897 sometimes preferable to send a break. On other systems such
898 as the Linux kernel, a break followed by g, which is Magic SysRq g
899 is required in order to interrupt the execution. */
900 const char interrupt_sequence_control_c
[] = "Ctrl-C";
901 const char interrupt_sequence_break
[] = "BREAK";
902 const char interrupt_sequence_break_g
[] = "BREAK-g";
903 static const char *const interrupt_sequence_modes
[] =
905 interrupt_sequence_control_c
,
906 interrupt_sequence_break
,
907 interrupt_sequence_break_g
,
910 static const char *interrupt_sequence_mode
= interrupt_sequence_control_c
;
913 show_interrupt_sequence (struct ui_file
*file
, int from_tty
,
914 struct cmd_list_element
*c
,
917 if (interrupt_sequence_mode
== interrupt_sequence_control_c
)
918 fprintf_filtered (file
,
919 _("Send the ASCII ETX character (Ctrl-c) "
920 "to the remote target to interrupt the "
921 "execution of the program.\n"));
922 else if (interrupt_sequence_mode
== interrupt_sequence_break
)
923 fprintf_filtered (file
,
924 _("send a break signal to the remote target "
925 "to interrupt the execution of the program.\n"));
926 else if (interrupt_sequence_mode
== interrupt_sequence_break_g
)
927 fprintf_filtered (file
,
928 _("Send a break signal and 'g' a.k.a. Magic SysRq g to "
929 "the remote target to interrupt the execution "
930 "of Linux kernel.\n"));
932 internal_error (__FILE__
, __LINE__
,
933 _("Invalid value for interrupt_sequence_mode: %s."),
934 interrupt_sequence_mode
);
937 /* This boolean variable specifies whether interrupt_sequence is sent
938 to the remote target when gdb connects to it.
939 This is mostly needed when you debug the Linux kernel: The Linux kernel
940 expects BREAK g which is Magic SysRq g for connecting gdb. */
941 static int interrupt_on_connect
= 0;
943 /* This variable is used to implement the "set/show remotebreak" commands.
944 Since these commands are now deprecated in favor of "set/show remote
945 interrupt-sequence", it no longer has any effect on the code. */
946 static int remote_break
;
949 set_remotebreak (char *args
, int from_tty
, struct cmd_list_element
*c
)
952 interrupt_sequence_mode
= interrupt_sequence_break
;
954 interrupt_sequence_mode
= interrupt_sequence_control_c
;
958 show_remotebreak (struct ui_file
*file
, int from_tty
,
959 struct cmd_list_element
*c
,
964 /* This variable sets the number of bits in an address that are to be
965 sent in a memory ("M" or "m") packet. Normally, after stripping
966 leading zeros, the entire address would be sent. This variable
967 restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The
968 initial implementation of remote.c restricted the address sent in
969 memory packets to ``host::sizeof long'' bytes - (typically 32
970 bits). Consequently, for 64 bit targets, the upper 32 bits of an
971 address was never sent. Since fixing this bug may cause a break in
972 some remote targets this variable is principly provided to
973 facilitate backward compatibility. */
975 static unsigned int remote_address_size
;
977 /* Temporary to track who currently owns the terminal. See
978 remote_terminal_* for more details. */
980 static int remote_async_terminal_ours_p
;
983 /* User configurable variables for the number of characters in a
984 memory read/write packet. MIN (rsa->remote_packet_size,
985 rsa->sizeof_g_packet) is the default. Some targets need smaller
986 values (fifo overruns, et.al.) and some users need larger values
987 (speed up transfers). The variables ``preferred_*'' (the user
988 request), ``current_*'' (what was actually set) and ``forced_*''
989 (Positive - a soft limit, negative - a hard limit). */
991 struct memory_packet_config
998 /* The default max memory-write-packet-size. The 16k is historical.
999 (It came from older GDB's using alloca for buffers and the
1000 knowledge (folklore?) that some hosts don't cope very well with
1001 large alloca calls.) */
1002 #define DEFAULT_MAX_MEMORY_PACKET_SIZE 16384
1004 /* The minimum remote packet size for memory transfers. Ensures we
1005 can write at least one byte. */
1006 #define MIN_MEMORY_PACKET_SIZE 20
1008 /* Compute the current size of a read/write packet. Since this makes
1009 use of ``actual_register_packet_size'' the computation is dynamic. */
1012 get_memory_packet_size (struct memory_packet_config
*config
)
1014 struct remote_state
*rs
= get_remote_state ();
1015 struct remote_arch_state
*rsa
= get_remote_arch_state ();
1018 if (config
->fixed_p
)
1020 if (config
->size
<= 0)
1021 what_they_get
= DEFAULT_MAX_MEMORY_PACKET_SIZE
;
1023 what_they_get
= config
->size
;
1027 what_they_get
= get_remote_packet_size ();
1028 /* Limit the packet to the size specified by the user. */
1029 if (config
->size
> 0
1030 && what_they_get
> config
->size
)
1031 what_they_get
= config
->size
;
1033 /* Limit it to the size of the targets ``g'' response unless we have
1034 permission from the stub to use a larger packet size. */
1035 if (rs
->explicit_packet_size
== 0
1036 && rsa
->actual_register_packet_size
> 0
1037 && what_they_get
> rsa
->actual_register_packet_size
)
1038 what_they_get
= rsa
->actual_register_packet_size
;
1040 if (what_they_get
< MIN_MEMORY_PACKET_SIZE
)
1041 what_they_get
= MIN_MEMORY_PACKET_SIZE
;
1043 /* Make sure there is room in the global buffer for this packet
1044 (including its trailing NUL byte). */
1045 if (rs
->buf_size
< what_they_get
+ 1)
1047 rs
->buf_size
= 2 * what_they_get
;
1048 rs
->buf
= (char *) xrealloc (rs
->buf
, 2 * what_they_get
);
1051 return what_they_get
;
1054 /* Update the size of a read/write packet. If they user wants
1055 something really big then do a sanity check. */
1058 set_memory_packet_size (char *args
, struct memory_packet_config
*config
)
1060 int fixed_p
= config
->fixed_p
;
1061 long size
= config
->size
;
1064 error (_("Argument required (integer, `fixed' or `limited')."));
1065 else if (strcmp (args
, "hard") == 0
1066 || strcmp (args
, "fixed") == 0)
1068 else if (strcmp (args
, "soft") == 0
1069 || strcmp (args
, "limit") == 0)
1075 size
= strtoul (args
, &end
, 0);
1077 error (_("Invalid %s (bad syntax)."), config
->name
);
1079 /* Instead of explicitly capping the size of a packet to or
1080 disallowing it, the user is allowed to set the size to
1081 something arbitrarily large. */
1084 /* So that the query shows the correct value. */
1086 size
= DEFAULT_MAX_MEMORY_PACKET_SIZE
;
1089 if (fixed_p
&& !config
->fixed_p
)
1091 if (! query (_("The target may not be able to correctly handle a %s\n"
1092 "of %ld bytes. Change the packet size? "),
1093 config
->name
, size
))
1094 error (_("Packet size not changed."));
1096 /* Update the config. */
1097 config
->fixed_p
= fixed_p
;
1098 config
->size
= size
;
1102 show_memory_packet_size (struct memory_packet_config
*config
)
1104 printf_filtered (_("The %s is %ld. "), config
->name
, config
->size
);
1105 if (config
->fixed_p
)
1106 printf_filtered (_("Packets are fixed at %ld bytes.\n"),
1107 get_memory_packet_size (config
));
1109 printf_filtered (_("Packets are limited to %ld bytes.\n"),
1110 get_memory_packet_size (config
));
1113 static struct memory_packet_config memory_write_packet_config
=
1115 "memory-write-packet-size",
1119 set_memory_write_packet_size (char *args
, int from_tty
)
1121 set_memory_packet_size (args
, &memory_write_packet_config
);
1125 show_memory_write_packet_size (char *args
, int from_tty
)
1127 show_memory_packet_size (&memory_write_packet_config
);
1131 get_memory_write_packet_size (void)
1133 return get_memory_packet_size (&memory_write_packet_config
);
1136 static struct memory_packet_config memory_read_packet_config
=
1138 "memory-read-packet-size",
1142 set_memory_read_packet_size (char *args
, int from_tty
)
1144 set_memory_packet_size (args
, &memory_read_packet_config
);
1148 show_memory_read_packet_size (char *args
, int from_tty
)
1150 show_memory_packet_size (&memory_read_packet_config
);
1154 get_memory_read_packet_size (void)
1156 long size
= get_memory_packet_size (&memory_read_packet_config
);
1158 /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an
1159 extra buffer size argument before the memory read size can be
1160 increased beyond this. */
1161 if (size
> get_remote_packet_size ())
1162 size
= get_remote_packet_size ();
1167 /* Generic configuration support for packets the stub optionally
1168 supports. Allows the user to specify the use of the packet as well
1169 as allowing GDB to auto-detect support in the remote stub. */
1173 PACKET_SUPPORT_UNKNOWN
= 0,
1178 struct packet_config
1183 /* If auto, GDB auto-detects support for this packet or feature,
1184 either through qSupported, or by trying the packet and looking
1185 at the response. If true, GDB assumes the target supports this
1186 packet. If false, the packet is disabled. Configs that don't
1187 have an associated command always have this set to auto. */
1188 enum auto_boolean detect
;
1190 /* Does the target support this packet? */
1191 enum packet_support support
;
1194 /* Analyze a packet's return value and update the packet config
1204 static enum packet_support
packet_config_support (struct packet_config
*config
);
1205 static enum packet_support
packet_support (int packet
);
1208 show_packet_config_cmd (struct packet_config
*config
)
1210 char *support
= "internal-error";
1212 switch (packet_config_support (config
))
1215 support
= "enabled";
1217 case PACKET_DISABLE
:
1218 support
= "disabled";
1220 case PACKET_SUPPORT_UNKNOWN
:
1221 support
= "unknown";
1224 switch (config
->detect
)
1226 case AUTO_BOOLEAN_AUTO
:
1227 printf_filtered (_("Support for the `%s' packet "
1228 "is auto-detected, currently %s.\n"),
1229 config
->name
, support
);
1231 case AUTO_BOOLEAN_TRUE
:
1232 case AUTO_BOOLEAN_FALSE
:
1233 printf_filtered (_("Support for the `%s' packet is currently %s.\n"),
1234 config
->name
, support
);
1240 add_packet_config_cmd (struct packet_config
*config
, const char *name
,
1241 const char *title
, int legacy
)
1247 config
->name
= name
;
1248 config
->title
= title
;
1249 set_doc
= xstrprintf ("Set use of remote protocol `%s' (%s) packet",
1251 show_doc
= xstrprintf ("Show current use of remote "
1252 "protocol `%s' (%s) packet",
1254 /* set/show TITLE-packet {auto,on,off} */
1255 cmd_name
= xstrprintf ("%s-packet", title
);
1256 add_setshow_auto_boolean_cmd (cmd_name
, class_obscure
,
1257 &config
->detect
, set_doc
,
1258 show_doc
, NULL
, /* help_doc */
1260 show_remote_protocol_packet_cmd
,
1261 &remote_set_cmdlist
, &remote_show_cmdlist
);
1262 /* The command code copies the documentation strings. */
1265 /* set/show remote NAME-packet {auto,on,off} -- legacy. */
1270 legacy_name
= xstrprintf ("%s-packet", name
);
1271 add_alias_cmd (legacy_name
, cmd_name
, class_obscure
, 0,
1272 &remote_set_cmdlist
);
1273 add_alias_cmd (legacy_name
, cmd_name
, class_obscure
, 0,
1274 &remote_show_cmdlist
);
1278 static enum packet_result
1279 packet_check_result (const char *buf
)
1283 /* The stub recognized the packet request. Check that the
1284 operation succeeded. */
1286 && isxdigit (buf
[1]) && isxdigit (buf
[2])
1288 /* "Enn" - definitly an error. */
1289 return PACKET_ERROR
;
1291 /* Always treat "E." as an error. This will be used for
1292 more verbose error messages, such as E.memtypes. */
1293 if (buf
[0] == 'E' && buf
[1] == '.')
1294 return PACKET_ERROR
;
1296 /* The packet may or may not be OK. Just assume it is. */
1300 /* The stub does not support the packet. */
1301 return PACKET_UNKNOWN
;
1304 static enum packet_result
1305 packet_ok (const char *buf
, struct packet_config
*config
)
1307 enum packet_result result
;
1309 if (config
->detect
!= AUTO_BOOLEAN_TRUE
1310 && config
->support
== PACKET_DISABLE
)
1311 internal_error (__FILE__
, __LINE__
,
1312 _("packet_ok: attempt to use a disabled packet"));
1314 result
= packet_check_result (buf
);
1319 /* The stub recognized the packet request. */
1320 if (config
->support
== PACKET_SUPPORT_UNKNOWN
)
1323 fprintf_unfiltered (gdb_stdlog
,
1324 "Packet %s (%s) is supported\n",
1325 config
->name
, config
->title
);
1326 config
->support
= PACKET_ENABLE
;
1329 case PACKET_UNKNOWN
:
1330 /* The stub does not support the packet. */
1331 if (config
->detect
== AUTO_BOOLEAN_AUTO
1332 && config
->support
== PACKET_ENABLE
)
1334 /* If the stub previously indicated that the packet was
1335 supported then there is a protocol error. */
1336 error (_("Protocol error: %s (%s) conflicting enabled responses."),
1337 config
->name
, config
->title
);
1339 else if (config
->detect
== AUTO_BOOLEAN_TRUE
)
1341 /* The user set it wrong. */
1342 error (_("Enabled packet %s (%s) not recognized by stub"),
1343 config
->name
, config
->title
);
1347 fprintf_unfiltered (gdb_stdlog
,
1348 "Packet %s (%s) is NOT supported\n",
1349 config
->name
, config
->title
);
1350 config
->support
= PACKET_DISABLE
;
1371 PACKET_vFile_pwrite
,
1373 PACKET_vFile_unlink
,
1374 PACKET_vFile_readlink
,
1377 PACKET_qXfer_features
,
1378 PACKET_qXfer_exec_file
,
1379 PACKET_qXfer_libraries
,
1380 PACKET_qXfer_libraries_svr4
,
1381 PACKET_qXfer_memory_map
,
1382 PACKET_qXfer_spu_read
,
1383 PACKET_qXfer_spu_write
,
1384 PACKET_qXfer_osdata
,
1385 PACKET_qXfer_threads
,
1386 PACKET_qXfer_statictrace_read
,
1387 PACKET_qXfer_traceframe_info
,
1393 PACKET_QPassSignals
,
1394 PACKET_QCatchSyscalls
,
1395 PACKET_QProgramSignals
,
1397 PACKET_qSearch_memory
,
1400 PACKET_QStartNoAckMode
,
1402 PACKET_qXfer_siginfo_read
,
1403 PACKET_qXfer_siginfo_write
,
1406 /* Support for conditional tracepoints. */
1407 PACKET_ConditionalTracepoints
,
1409 /* Support for target-side breakpoint conditions. */
1410 PACKET_ConditionalBreakpoints
,
1412 /* Support for target-side breakpoint commands. */
1413 PACKET_BreakpointCommands
,
1415 /* Support for fast tracepoints. */
1416 PACKET_FastTracepoints
,
1418 /* Support for static tracepoints. */
1419 PACKET_StaticTracepoints
,
1421 /* Support for installing tracepoints while a trace experiment is
1423 PACKET_InstallInTrace
,
1427 PACKET_TracepointSource
,
1430 PACKET_QDisableRandomization
,
1432 PACKET_QTBuffer_size
,
1436 PACKET_qXfer_btrace
,
1438 /* Support for the QNonStop packet. */
1441 /* Support for the QThreadEvents packet. */
1442 PACKET_QThreadEvents
,
1444 /* Support for multi-process extensions. */
1445 PACKET_multiprocess_feature
,
1447 /* Support for enabling and disabling tracepoints while a trace
1448 experiment is running. */
1449 PACKET_EnableDisableTracepoints_feature
,
1451 /* Support for collecting strings using the tracenz bytecode. */
1452 PACKET_tracenz_feature
,
1454 /* Support for continuing to run a trace experiment while GDB is
1456 PACKET_DisconnectedTracing_feature
,
1458 /* Support for qXfer:libraries-svr4:read with a non-empty annex. */
1459 PACKET_augmented_libraries_svr4_read_feature
,
1461 /* Support for the qXfer:btrace-conf:read packet. */
1462 PACKET_qXfer_btrace_conf
,
1464 /* Support for the Qbtrace-conf:bts:size packet. */
1465 PACKET_Qbtrace_conf_bts_size
,
1467 /* Support for swbreak+ feature. */
1468 PACKET_swbreak_feature
,
1470 /* Support for hwbreak+ feature. */
1471 PACKET_hwbreak_feature
,
1473 /* Support for fork events. */
1474 PACKET_fork_event_feature
,
1476 /* Support for vfork events. */
1477 PACKET_vfork_event_feature
,
1479 /* Support for the Qbtrace-conf:pt:size packet. */
1480 PACKET_Qbtrace_conf_pt_size
,
1482 /* Support for exec events. */
1483 PACKET_exec_event_feature
,
1485 /* Support for query supported vCont actions. */
1486 PACKET_vContSupported
,
1488 /* Support remote CTRL-C. */
1491 /* Support TARGET_WAITKIND_NO_RESUMED. */
1497 static struct packet_config remote_protocol_packets
[PACKET_MAX
];
1499 /* Returns the packet's corresponding "set remote foo-packet" command
1500 state. See struct packet_config for more details. */
1502 static enum auto_boolean
1503 packet_set_cmd_state (int packet
)
1505 return remote_protocol_packets
[packet
].detect
;
1508 /* Returns whether a given packet or feature is supported. This takes
1509 into account the state of the corresponding "set remote foo-packet"
1510 command, which may be used to bypass auto-detection. */
1512 static enum packet_support
1513 packet_config_support (struct packet_config
*config
)
1515 switch (config
->detect
)
1517 case AUTO_BOOLEAN_TRUE
:
1518 return PACKET_ENABLE
;
1519 case AUTO_BOOLEAN_FALSE
:
1520 return PACKET_DISABLE
;
1521 case AUTO_BOOLEAN_AUTO
:
1522 return config
->support
;
1524 gdb_assert_not_reached (_("bad switch"));
1528 /* Same as packet_config_support, but takes the packet's enum value as
1531 static enum packet_support
1532 packet_support (int packet
)
1534 struct packet_config
*config
= &remote_protocol_packets
[packet
];
1536 return packet_config_support (config
);
1540 show_remote_protocol_packet_cmd (struct ui_file
*file
, int from_tty
,
1541 struct cmd_list_element
*c
,
1544 struct packet_config
*packet
;
1546 for (packet
= remote_protocol_packets
;
1547 packet
< &remote_protocol_packets
[PACKET_MAX
];
1550 if (&packet
->detect
== c
->var
)
1552 show_packet_config_cmd (packet
);
1556 internal_error (__FILE__
, __LINE__
, _("Could not find config for %s"),
1560 /* Should we try one of the 'Z' requests? */
1564 Z_PACKET_SOFTWARE_BP
,
1565 Z_PACKET_HARDWARE_BP
,
1572 /* For compatibility with older distributions. Provide a ``set remote
1573 Z-packet ...'' command that updates all the Z packet types. */
1575 static enum auto_boolean remote_Z_packet_detect
;
1578 set_remote_protocol_Z_packet_cmd (char *args
, int from_tty
,
1579 struct cmd_list_element
*c
)
1583 for (i
= 0; i
< NR_Z_PACKET_TYPES
; i
++)
1584 remote_protocol_packets
[PACKET_Z0
+ i
].detect
= remote_Z_packet_detect
;
1588 show_remote_protocol_Z_packet_cmd (struct ui_file
*file
, int from_tty
,
1589 struct cmd_list_element
*c
,
1594 for (i
= 0; i
< NR_Z_PACKET_TYPES
; i
++)
1596 show_packet_config_cmd (&remote_protocol_packets
[PACKET_Z0
+ i
]);
1600 /* Returns true if the multi-process extensions are in effect. */
1603 remote_multi_process_p (struct remote_state
*rs
)
1605 return packet_support (PACKET_multiprocess_feature
) == PACKET_ENABLE
;
1608 /* Returns true if fork events are supported. */
1611 remote_fork_event_p (struct remote_state
*rs
)
1613 return packet_support (PACKET_fork_event_feature
) == PACKET_ENABLE
;
1616 /* Returns true if vfork events are supported. */
1619 remote_vfork_event_p (struct remote_state
*rs
)
1621 return packet_support (PACKET_vfork_event_feature
) == PACKET_ENABLE
;
1624 /* Returns true if exec events are supported. */
1627 remote_exec_event_p (struct remote_state
*rs
)
1629 return packet_support (PACKET_exec_event_feature
) == PACKET_ENABLE
;
1632 /* Insert fork catchpoint target routine. If fork events are enabled
1633 then return success, nothing more to do. */
1636 remote_insert_fork_catchpoint (struct target_ops
*ops
, int pid
)
1638 struct remote_state
*rs
= get_remote_state ();
1640 return !remote_fork_event_p (rs
);
1643 /* Remove fork catchpoint target routine. Nothing to do, just
1647 remote_remove_fork_catchpoint (struct target_ops
*ops
, int pid
)
1652 /* Insert vfork catchpoint target routine. If vfork events are enabled
1653 then return success, nothing more to do. */
1656 remote_insert_vfork_catchpoint (struct target_ops
*ops
, int pid
)
1658 struct remote_state
*rs
= get_remote_state ();
1660 return !remote_vfork_event_p (rs
);
1663 /* Remove vfork catchpoint target routine. Nothing to do, just
1667 remote_remove_vfork_catchpoint (struct target_ops
*ops
, int pid
)
1672 /* Insert exec catchpoint target routine. If exec events are
1673 enabled, just return success. */
1676 remote_insert_exec_catchpoint (struct target_ops
*ops
, int pid
)
1678 struct remote_state
*rs
= get_remote_state ();
1680 return !remote_exec_event_p (rs
);
1683 /* Remove exec catchpoint target routine. Nothing to do, just
1687 remote_remove_exec_catchpoint (struct target_ops
*ops
, int pid
)
1692 /* Tokens for use by the asynchronous signal handlers for SIGINT. */
1693 static struct async_signal_handler
*async_sigint_remote_twice_token
;
1694 static struct async_signal_handler
*async_sigint_remote_token
;
1697 /* Asynchronous signal handle registered as event loop source for
1698 when we have pending events ready to be passed to the core. */
1700 static struct async_event_handler
*remote_async_inferior_event_token
;
1704 static ptid_t magic_null_ptid
;
1705 static ptid_t not_sent_ptid
;
1706 static ptid_t any_thread_ptid
;
1708 /* Find out if the stub attached to PID (and hence GDB should offer to
1709 detach instead of killing it when bailing out). */
1712 remote_query_attached (int pid
)
1714 struct remote_state
*rs
= get_remote_state ();
1715 size_t size
= get_remote_packet_size ();
1717 if (packet_support (PACKET_qAttached
) == PACKET_DISABLE
)
1720 if (remote_multi_process_p (rs
))
1721 xsnprintf (rs
->buf
, size
, "qAttached:%x", pid
);
1723 xsnprintf (rs
->buf
, size
, "qAttached");
1726 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1728 switch (packet_ok (rs
->buf
,
1729 &remote_protocol_packets
[PACKET_qAttached
]))
1732 if (strcmp (rs
->buf
, "1") == 0)
1736 warning (_("Remote failure reply: %s"), rs
->buf
);
1738 case PACKET_UNKNOWN
:
1745 /* Add PID to GDB's inferior table. If FAKE_PID_P is true, then PID
1746 has been invented by GDB, instead of reported by the target. Since
1747 we can be connected to a remote system before before knowing about
1748 any inferior, mark the target with execution when we find the first
1749 inferior. If ATTACHED is 1, then we had just attached to this
1750 inferior. If it is 0, then we just created this inferior. If it
1751 is -1, then try querying the remote stub to find out if it had
1752 attached to the inferior or not. If TRY_OPEN_EXEC is true then
1753 attempt to open this inferior's executable as the main executable
1754 if no main executable is open already. */
1756 static struct inferior
*
1757 remote_add_inferior (int fake_pid_p
, int pid
, int attached
,
1760 struct inferior
*inf
;
1762 /* Check whether this process we're learning about is to be
1763 considered attached, or if is to be considered to have been
1764 spawned by the stub. */
1766 attached
= remote_query_attached (pid
);
1768 if (gdbarch_has_global_solist (target_gdbarch ()))
1770 /* If the target shares code across all inferiors, then every
1771 attach adds a new inferior. */
1772 inf
= add_inferior (pid
);
1774 /* ... and every inferior is bound to the same program space.
1775 However, each inferior may still have its own address
1777 inf
->aspace
= maybe_new_address_space ();
1778 inf
->pspace
= current_program_space
;
1782 /* In the traditional debugging scenario, there's a 1-1 match
1783 between program/address spaces. We simply bind the inferior
1784 to the program space's address space. */
1785 inf
= current_inferior ();
1786 inferior_appeared (inf
, pid
);
1789 inf
->attach_flag
= attached
;
1790 inf
->fake_pid_p
= fake_pid_p
;
1792 /* If no main executable is currently open then attempt to
1793 open the file that was executed to create this inferior. */
1794 if (try_open_exec
&& get_exec_file (0) == NULL
)
1795 exec_file_locate_attach (pid
, 1);
1800 /* Add thread PTID to GDB's thread list. Tag it as executing/running
1801 according to RUNNING. */
1804 remote_add_thread (ptid_t ptid
, int running
, int executing
)
1806 struct remote_state
*rs
= get_remote_state ();
1808 /* GDB historically didn't pull threads in the initial connection
1809 setup. If the remote target doesn't even have a concept of
1810 threads (e.g., a bare-metal target), even if internally we
1811 consider that a single-threaded target, mentioning a new thread
1812 might be confusing to the user. Be silent then, preserving the
1813 age old behavior. */
1814 if (rs
->starting_up
)
1815 add_thread_silent (ptid
);
1819 set_executing (ptid
, executing
);
1820 set_running (ptid
, running
);
1823 /* Come here when we learn about a thread id from the remote target.
1824 It may be the first time we hear about such thread, so take the
1825 opportunity to add it to GDB's thread list. In case this is the
1826 first time we're noticing its corresponding inferior, add it to
1827 GDB's inferior list as well. EXECUTING indicates whether the
1828 thread is (internally) executing or stopped. */
1831 remote_notice_new_inferior (ptid_t currthread
, int executing
)
1833 /* In non-stop mode, we assume new found threads are (externally)
1834 running until proven otherwise with a stop reply. In all-stop,
1835 we can only get here if all threads are stopped. */
1836 int running
= target_is_non_stop_p () ? 1 : 0;
1838 /* If this is a new thread, add it to GDB's thread list.
1839 If we leave it up to WFI to do this, bad things will happen. */
1841 if (in_thread_list (currthread
) && is_exited (currthread
))
1843 /* We're seeing an event on a thread id we knew had exited.
1844 This has to be a new thread reusing the old id. Add it. */
1845 remote_add_thread (currthread
, running
, executing
);
1849 if (!in_thread_list (currthread
))
1851 struct inferior
*inf
= NULL
;
1852 int pid
= ptid_get_pid (currthread
);
1854 if (ptid_is_pid (inferior_ptid
)
1855 && pid
== ptid_get_pid (inferior_ptid
))
1857 /* inferior_ptid has no thread member yet. This can happen
1858 with the vAttach -> remote_wait,"TAAthread:" path if the
1859 stub doesn't support qC. This is the first stop reported
1860 after an attach, so this is the main thread. Update the
1861 ptid in the thread list. */
1862 if (in_thread_list (pid_to_ptid (pid
)))
1863 thread_change_ptid (inferior_ptid
, currthread
);
1866 remote_add_thread (currthread
, running
, executing
);
1867 inferior_ptid
= currthread
;
1872 if (ptid_equal (magic_null_ptid
, inferior_ptid
))
1874 /* inferior_ptid is not set yet. This can happen with the
1875 vRun -> remote_wait,"TAAthread:" path if the stub
1876 doesn't support qC. This is the first stop reported
1877 after an attach, so this is the main thread. Update the
1878 ptid in the thread list. */
1879 thread_change_ptid (inferior_ptid
, currthread
);
1883 /* When connecting to a target remote, or to a target
1884 extended-remote which already was debugging an inferior, we
1885 may not know about it yet. Add it before adding its child
1886 thread, so notifications are emitted in a sensible order. */
1887 if (!in_inferior_list (ptid_get_pid (currthread
)))
1889 struct remote_state
*rs
= get_remote_state ();
1890 int fake_pid_p
= !remote_multi_process_p (rs
);
1892 inf
= remote_add_inferior (fake_pid_p
,
1893 ptid_get_pid (currthread
), -1, 1);
1896 /* This is really a new thread. Add it. */
1897 remote_add_thread (currthread
, running
, executing
);
1899 /* If we found a new inferior, let the common code do whatever
1900 it needs to with it (e.g., read shared libraries, insert
1901 breakpoints), unless we're just setting up an all-stop
1905 struct remote_state
*rs
= get_remote_state ();
1907 if (!rs
->starting_up
)
1908 notice_new_inferior (currthread
, executing
, 0);
1913 /* Return the private thread data, creating it if necessary. */
1915 static struct private_thread_info
*
1916 demand_private_info (ptid_t ptid
)
1918 struct thread_info
*info
= find_thread_ptid (ptid
);
1924 info
->priv
= XNEW (struct private_thread_info
);
1925 info
->private_dtor
= free_private_thread_info
;
1926 info
->priv
->core
= -1;
1927 info
->priv
->extra
= NULL
;
1928 info
->priv
->name
= NULL
;
1934 /* Call this function as a result of
1935 1) A halt indication (T packet) containing a thread id
1936 2) A direct query of currthread
1937 3) Successful execution of set thread */
1940 record_currthread (struct remote_state
*rs
, ptid_t currthread
)
1942 rs
->general_thread
= currthread
;
1945 /* If 'QPassSignals' is supported, tell the remote stub what signals
1946 it can simply pass through to the inferior without reporting. */
1949 remote_pass_signals (struct target_ops
*self
,
1950 int numsigs
, unsigned char *pass_signals
)
1952 if (packet_support (PACKET_QPassSignals
) != PACKET_DISABLE
)
1954 char *pass_packet
, *p
;
1956 struct remote_state
*rs
= get_remote_state ();
1958 gdb_assert (numsigs
< 256);
1959 for (i
= 0; i
< numsigs
; i
++)
1961 if (pass_signals
[i
])
1964 pass_packet
= (char *) xmalloc (count
* 3 + strlen ("QPassSignals:") + 1);
1965 strcpy (pass_packet
, "QPassSignals:");
1966 p
= pass_packet
+ strlen (pass_packet
);
1967 for (i
= 0; i
< numsigs
; i
++)
1969 if (pass_signals
[i
])
1972 *p
++ = tohex (i
>> 4);
1973 *p
++ = tohex (i
& 15);
1982 if (!rs
->last_pass_packet
|| strcmp (rs
->last_pass_packet
, pass_packet
))
1984 putpkt (pass_packet
);
1985 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1986 packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_QPassSignals
]);
1987 if (rs
->last_pass_packet
)
1988 xfree (rs
->last_pass_packet
);
1989 rs
->last_pass_packet
= pass_packet
;
1992 xfree (pass_packet
);
1996 /* If 'QCatchSyscalls' is supported, tell the remote stub
1997 to report syscalls to GDB. */
2000 remote_set_syscall_catchpoint (struct target_ops
*self
,
2001 int pid
, int needed
, int any_count
,
2002 int table_size
, int *table
)
2005 enum packet_result result
;
2008 if (packet_support (PACKET_QCatchSyscalls
) == PACKET_DISABLE
)
2010 /* Not supported. */
2014 if (needed
&& !any_count
)
2018 /* Count how many syscalls are to be caught (table[sysno] != 0). */
2019 for (i
= 0; i
< table_size
; i
++)
2028 fprintf_unfiltered (gdb_stdlog
,
2029 "remote_set_syscall_catchpoint "
2030 "pid %d needed %d any_count %d n_sysno %d\n",
2031 pid
, needed
, any_count
, n_sysno
);
2036 /* Prepare a packet with the sysno list, assuming max 8+1
2037 characters for a sysno. If the resulting packet size is too
2038 big, fallback on the non-selective packet. */
2039 const int maxpktsz
= strlen ("QCatchSyscalls:1") + n_sysno
* 9 + 1;
2041 catch_packet
= (char *) xmalloc (maxpktsz
);
2042 strcpy (catch_packet
, "QCatchSyscalls:1");
2051 /* Add in catch_packet each syscall to be caught (table[i] != 0). */
2052 for (i
= 0; i
< table_size
; i
++)
2055 p
+= xsnprintf (p
, catch_packet
+ maxpktsz
- p
, ";%x", i
);
2058 if (strlen (catch_packet
) > get_remote_packet_size ())
2060 /* catch_packet too big. Fallback to less efficient
2061 non selective mode, with GDB doing the filtering. */
2062 catch_packet
[sizeof ("QCatchSyscalls:1") - 1] = 0;
2066 catch_packet
= xstrdup ("QCatchSyscalls:0");
2069 struct cleanup
*old_chain
= make_cleanup (xfree
, catch_packet
);
2070 struct remote_state
*rs
= get_remote_state ();
2072 putpkt (catch_packet
);
2073 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2074 result
= packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_QCatchSyscalls
]);
2075 do_cleanups (old_chain
);
2076 if (result
== PACKET_OK
)
2083 /* If 'QProgramSignals' is supported, tell the remote stub what
2084 signals it should pass through to the inferior when detaching. */
2087 remote_program_signals (struct target_ops
*self
,
2088 int numsigs
, unsigned char *signals
)
2090 if (packet_support (PACKET_QProgramSignals
) != PACKET_DISABLE
)
2094 struct remote_state
*rs
= get_remote_state ();
2096 gdb_assert (numsigs
< 256);
2097 for (i
= 0; i
< numsigs
; i
++)
2102 packet
= (char *) xmalloc (count
* 3 + strlen ("QProgramSignals:") + 1);
2103 strcpy (packet
, "QProgramSignals:");
2104 p
= packet
+ strlen (packet
);
2105 for (i
= 0; i
< numsigs
; i
++)
2107 if (signal_pass_state (i
))
2110 *p
++ = tohex (i
>> 4);
2111 *p
++ = tohex (i
& 15);
2120 if (!rs
->last_program_signals_packet
2121 || strcmp (rs
->last_program_signals_packet
, packet
) != 0)
2124 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2125 packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_QProgramSignals
]);
2126 xfree (rs
->last_program_signals_packet
);
2127 rs
->last_program_signals_packet
= packet
;
2134 /* If PTID is MAGIC_NULL_PTID, don't set any thread. If PTID is
2135 MINUS_ONE_PTID, set the thread to -1, so the stub returns the
2136 thread. If GEN is set, set the general thread, if not, then set
2137 the step/continue thread. */
2139 set_thread (struct ptid ptid
, int gen
)
2141 struct remote_state
*rs
= get_remote_state ();
2142 ptid_t state
= gen
? rs
->general_thread
: rs
->continue_thread
;
2143 char *buf
= rs
->buf
;
2144 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
2146 if (ptid_equal (state
, ptid
))
2150 *buf
++ = gen
? 'g' : 'c';
2151 if (ptid_equal (ptid
, magic_null_ptid
))
2152 xsnprintf (buf
, endbuf
- buf
, "0");
2153 else if (ptid_equal (ptid
, any_thread_ptid
))
2154 xsnprintf (buf
, endbuf
- buf
, "0");
2155 else if (ptid_equal (ptid
, minus_one_ptid
))
2156 xsnprintf (buf
, endbuf
- buf
, "-1");
2158 write_ptid (buf
, endbuf
, ptid
);
2160 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2162 rs
->general_thread
= ptid
;
2164 rs
->continue_thread
= ptid
;
2168 set_general_thread (struct ptid ptid
)
2170 set_thread (ptid
, 1);
2174 set_continue_thread (struct ptid ptid
)
2176 set_thread (ptid
, 0);
2179 /* Change the remote current process. Which thread within the process
2180 ends up selected isn't important, as long as it is the same process
2181 as what INFERIOR_PTID points to.
2183 This comes from that fact that there is no explicit notion of
2184 "selected process" in the protocol. The selected process for
2185 general operations is the process the selected general thread
2189 set_general_process (void)
2191 struct remote_state
*rs
= get_remote_state ();
2193 /* If the remote can't handle multiple processes, don't bother. */
2194 if (!remote_multi_process_p (rs
))
2197 /* We only need to change the remote current thread if it's pointing
2198 at some other process. */
2199 if (ptid_get_pid (rs
->general_thread
) != ptid_get_pid (inferior_ptid
))
2200 set_general_thread (inferior_ptid
);
2204 /* Return nonzero if this is the main thread that we made up ourselves
2205 to model non-threaded targets as single-threaded. */
2208 remote_thread_always_alive (struct target_ops
*ops
, ptid_t ptid
)
2210 if (ptid_equal (ptid
, magic_null_ptid
))
2211 /* The main thread is always alive. */
2214 if (ptid_get_pid (ptid
) != 0 && ptid_get_lwp (ptid
) == 0)
2215 /* The main thread is always alive. This can happen after a
2216 vAttach, if the remote side doesn't support
2223 /* Return nonzero if the thread PTID is still alive on the remote
2227 remote_thread_alive (struct target_ops
*ops
, ptid_t ptid
)
2229 struct remote_state
*rs
= get_remote_state ();
2232 /* Check if this is a thread that we made up ourselves to model
2233 non-threaded targets as single-threaded. */
2234 if (remote_thread_always_alive (ops
, ptid
))
2238 endp
= rs
->buf
+ get_remote_packet_size ();
2241 write_ptid (p
, endp
, ptid
);
2244 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2245 return (rs
->buf
[0] == 'O' && rs
->buf
[1] == 'K');
2248 /* Return a pointer to a thread name if we know it and NULL otherwise.
2249 The thread_info object owns the memory for the name. */
2252 remote_thread_name (struct target_ops
*ops
, struct thread_info
*info
)
2254 if (info
->priv
!= NULL
)
2255 return info
->priv
->name
;
2260 /* About these extended threadlist and threadinfo packets. They are
2261 variable length packets but, the fields within them are often fixed
2262 length. They are redundent enough to send over UDP as is the
2263 remote protocol in general. There is a matching unit test module
2266 /* WARNING: This threadref data structure comes from the remote O.S.,
2267 libstub protocol encoding, and remote.c. It is not particularly
2270 /* Right now, the internal structure is int. We want it to be bigger.
2271 Plan to fix this. */
2273 typedef int gdb_threadref
; /* Internal GDB thread reference. */
2275 /* gdb_ext_thread_info is an internal GDB data structure which is
2276 equivalent to the reply of the remote threadinfo packet. */
2278 struct gdb_ext_thread_info
2280 threadref threadid
; /* External form of thread reference. */
2281 int active
; /* Has state interesting to GDB?
2283 char display
[256]; /* Brief state display, name,
2284 blocked/suspended. */
2285 char shortname
[32]; /* To be used to name threads. */
2286 char more_display
[256]; /* Long info, statistics, queue depth,
2290 /* The volume of remote transfers can be limited by submitting
2291 a mask containing bits specifying the desired information.
2292 Use a union of these values as the 'selection' parameter to
2293 get_thread_info. FIXME: Make these TAG names more thread specific. */
2295 #define TAG_THREADID 1
2296 #define TAG_EXISTS 2
2297 #define TAG_DISPLAY 4
2298 #define TAG_THREADNAME 8
2299 #define TAG_MOREDISPLAY 16
2301 #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2)
2303 static char *unpack_nibble (char *buf
, int *val
);
2305 static char *unpack_byte (char *buf
, int *value
);
2307 static char *pack_int (char *buf
, int value
);
2309 static char *unpack_int (char *buf
, int *value
);
2311 static char *unpack_string (char *src
, char *dest
, int length
);
2313 static char *pack_threadid (char *pkt
, threadref
*id
);
2315 static char *unpack_threadid (char *inbuf
, threadref
*id
);
2317 void int_to_threadref (threadref
*id
, int value
);
2319 static int threadref_to_int (threadref
*ref
);
2321 static void copy_threadref (threadref
*dest
, threadref
*src
);
2323 static int threadmatch (threadref
*dest
, threadref
*src
);
2325 static char *pack_threadinfo_request (char *pkt
, int mode
,
2328 static int remote_unpack_thread_info_response (char *pkt
,
2329 threadref
*expectedref
,
2330 struct gdb_ext_thread_info
2334 static int remote_get_threadinfo (threadref
*threadid
,
2335 int fieldset
, /*TAG mask */
2336 struct gdb_ext_thread_info
*info
);
2338 static char *pack_threadlist_request (char *pkt
, int startflag
,
2340 threadref
*nextthread
);
2342 static int parse_threadlist_response (char *pkt
,
2344 threadref
*original_echo
,
2345 threadref
*resultlist
,
2348 static int remote_get_threadlist (int startflag
,
2349 threadref
*nextthread
,
2353 threadref
*threadlist
);
2355 typedef int (*rmt_thread_action
) (threadref
*ref
, void *context
);
2357 static int remote_threadlist_iterator (rmt_thread_action stepfunction
,
2358 void *context
, int looplimit
);
2360 static int remote_newthread_step (threadref
*ref
, void *context
);
2363 /* Write a PTID to BUF. ENDBUF points to one-passed-the-end of the
2364 buffer we're allowed to write to. Returns
2365 BUF+CHARACTERS_WRITTEN. */
2368 write_ptid (char *buf
, const char *endbuf
, ptid_t ptid
)
2371 struct remote_state
*rs
= get_remote_state ();
2373 if (remote_multi_process_p (rs
))
2375 pid
= ptid_get_pid (ptid
);
2377 buf
+= xsnprintf (buf
, endbuf
- buf
, "p-%x.", -pid
);
2379 buf
+= xsnprintf (buf
, endbuf
- buf
, "p%x.", pid
);
2381 tid
= ptid_get_lwp (ptid
);
2383 buf
+= xsnprintf (buf
, endbuf
- buf
, "-%x", -tid
);
2385 buf
+= xsnprintf (buf
, endbuf
- buf
, "%x", tid
);
2390 /* Extract a PTID from BUF. If non-null, OBUF is set to the to one
2391 passed the last parsed char. Returns null_ptid on error. */
2394 read_ptid (char *buf
, char **obuf
)
2398 ULONGEST pid
= 0, tid
= 0;
2402 /* Multi-process ptid. */
2403 pp
= unpack_varlen_hex (p
+ 1, &pid
);
2405 error (_("invalid remote ptid: %s"), p
);
2408 pp
= unpack_varlen_hex (p
+ 1, &tid
);
2411 return ptid_build (pid
, tid
, 0);
2414 /* No multi-process. Just a tid. */
2415 pp
= unpack_varlen_hex (p
, &tid
);
2417 /* Return null_ptid when no thread id is found. */
2425 /* Since the stub is not sending a process id, then default to
2426 what's in inferior_ptid, unless it's null at this point. If so,
2427 then since there's no way to know the pid of the reported
2428 threads, use the magic number. */
2429 if (ptid_equal (inferior_ptid
, null_ptid
))
2430 pid
= ptid_get_pid (magic_null_ptid
);
2432 pid
= ptid_get_pid (inferior_ptid
);
2436 return ptid_build (pid
, tid
, 0);
2442 if (ch
>= 'a' && ch
<= 'f')
2443 return ch
- 'a' + 10;
2444 if (ch
>= '0' && ch
<= '9')
2446 if (ch
>= 'A' && ch
<= 'F')
2447 return ch
- 'A' + 10;
2452 stub_unpack_int (char *buff
, int fieldlength
)
2459 nibble
= stubhex (*buff
++);
2463 retval
= retval
<< 4;
2469 unpack_nibble (char *buf
, int *val
)
2471 *val
= fromhex (*buf
++);
2476 unpack_byte (char *buf
, int *value
)
2478 *value
= stub_unpack_int (buf
, 2);
2483 pack_int (char *buf
, int value
)
2485 buf
= pack_hex_byte (buf
, (value
>> 24) & 0xff);
2486 buf
= pack_hex_byte (buf
, (value
>> 16) & 0xff);
2487 buf
= pack_hex_byte (buf
, (value
>> 8) & 0x0ff);
2488 buf
= pack_hex_byte (buf
, (value
& 0xff));
2493 unpack_int (char *buf
, int *value
)
2495 *value
= stub_unpack_int (buf
, 8);
2499 #if 0 /* Currently unused, uncomment when needed. */
2500 static char *pack_string (char *pkt
, char *string
);
2503 pack_string (char *pkt
, char *string
)
2508 len
= strlen (string
);
2510 len
= 200; /* Bigger than most GDB packets, junk??? */
2511 pkt
= pack_hex_byte (pkt
, len
);
2515 if ((ch
== '\0') || (ch
== '#'))
2516 ch
= '*'; /* Protect encapsulation. */
2521 #endif /* 0 (unused) */
2524 unpack_string (char *src
, char *dest
, int length
)
2533 pack_threadid (char *pkt
, threadref
*id
)
2536 unsigned char *altid
;
2538 altid
= (unsigned char *) id
;
2539 limit
= pkt
+ BUF_THREAD_ID_SIZE
;
2541 pkt
= pack_hex_byte (pkt
, *altid
++);
2547 unpack_threadid (char *inbuf
, threadref
*id
)
2550 char *limit
= inbuf
+ BUF_THREAD_ID_SIZE
;
2553 altref
= (char *) id
;
2555 while (inbuf
< limit
)
2557 x
= stubhex (*inbuf
++);
2558 y
= stubhex (*inbuf
++);
2559 *altref
++ = (x
<< 4) | y
;
2564 /* Externally, threadrefs are 64 bits but internally, they are still
2565 ints. This is due to a mismatch of specifications. We would like
2566 to use 64bit thread references internally. This is an adapter
2570 int_to_threadref (threadref
*id
, int value
)
2572 unsigned char *scan
;
2574 scan
= (unsigned char *) id
;
2580 *scan
++ = (value
>> 24) & 0xff;
2581 *scan
++ = (value
>> 16) & 0xff;
2582 *scan
++ = (value
>> 8) & 0xff;
2583 *scan
++ = (value
& 0xff);
2587 threadref_to_int (threadref
*ref
)
2590 unsigned char *scan
;
2596 value
= (value
<< 8) | ((*scan
++) & 0xff);
2601 copy_threadref (threadref
*dest
, threadref
*src
)
2604 unsigned char *csrc
, *cdest
;
2606 csrc
= (unsigned char *) src
;
2607 cdest
= (unsigned char *) dest
;
2614 threadmatch (threadref
*dest
, threadref
*src
)
2616 /* Things are broken right now, so just assume we got a match. */
2618 unsigned char *srcp
, *destp
;
2620 srcp
= (char *) src
;
2621 destp
= (char *) dest
;
2625 result
&= (*srcp
++ == *destp
++) ? 1 : 0;
2632 threadid:1, # always request threadid
2639 /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */
2642 pack_threadinfo_request (char *pkt
, int mode
, threadref
*id
)
2644 *pkt
++ = 'q'; /* Info Query */
2645 *pkt
++ = 'P'; /* process or thread info */
2646 pkt
= pack_int (pkt
, mode
); /* mode */
2647 pkt
= pack_threadid (pkt
, id
); /* threadid */
2648 *pkt
= '\0'; /* terminate */
2652 /* These values tag the fields in a thread info response packet. */
2653 /* Tagging the fields allows us to request specific fields and to
2654 add more fields as time goes by. */
2656 #define TAG_THREADID 1 /* Echo the thread identifier. */
2657 #define TAG_EXISTS 2 /* Is this process defined enough to
2658 fetch registers and its stack? */
2659 #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */
2660 #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */
2661 #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about
2665 remote_unpack_thread_info_response (char *pkt
, threadref
*expectedref
,
2666 struct gdb_ext_thread_info
*info
)
2668 struct remote_state
*rs
= get_remote_state ();
2672 char *limit
= pkt
+ rs
->buf_size
; /* Plausible parsing limit. */
2675 /* info->threadid = 0; FIXME: implement zero_threadref. */
2677 info
->display
[0] = '\0';
2678 info
->shortname
[0] = '\0';
2679 info
->more_display
[0] = '\0';
2681 /* Assume the characters indicating the packet type have been
2683 pkt
= unpack_int (pkt
, &mask
); /* arg mask */
2684 pkt
= unpack_threadid (pkt
, &ref
);
2687 warning (_("Incomplete response to threadinfo request."));
2688 if (!threadmatch (&ref
, expectedref
))
2689 { /* This is an answer to a different request. */
2690 warning (_("ERROR RMT Thread info mismatch."));
2693 copy_threadref (&info
->threadid
, &ref
);
2695 /* Loop on tagged fields , try to bail if somthing goes wrong. */
2697 /* Packets are terminated with nulls. */
2698 while ((pkt
< limit
) && mask
&& *pkt
)
2700 pkt
= unpack_int (pkt
, &tag
); /* tag */
2701 pkt
= unpack_byte (pkt
, &length
); /* length */
2702 if (!(tag
& mask
)) /* Tags out of synch with mask. */
2704 warning (_("ERROR RMT: threadinfo tag mismatch."));
2708 if (tag
== TAG_THREADID
)
2712 warning (_("ERROR RMT: length of threadid is not 16."));
2716 pkt
= unpack_threadid (pkt
, &ref
);
2717 mask
= mask
& ~TAG_THREADID
;
2720 if (tag
== TAG_EXISTS
)
2722 info
->active
= stub_unpack_int (pkt
, length
);
2724 mask
= mask
& ~(TAG_EXISTS
);
2727 warning (_("ERROR RMT: 'exists' length too long."));
2733 if (tag
== TAG_THREADNAME
)
2735 pkt
= unpack_string (pkt
, &info
->shortname
[0], length
);
2736 mask
= mask
& ~TAG_THREADNAME
;
2739 if (tag
== TAG_DISPLAY
)
2741 pkt
= unpack_string (pkt
, &info
->display
[0], length
);
2742 mask
= mask
& ~TAG_DISPLAY
;
2745 if (tag
== TAG_MOREDISPLAY
)
2747 pkt
= unpack_string (pkt
, &info
->more_display
[0], length
);
2748 mask
= mask
& ~TAG_MOREDISPLAY
;
2751 warning (_("ERROR RMT: unknown thread info tag."));
2752 break; /* Not a tag we know about. */
2758 remote_get_threadinfo (threadref
*threadid
, int fieldset
, /* TAG mask */
2759 struct gdb_ext_thread_info
*info
)
2761 struct remote_state
*rs
= get_remote_state ();
2764 pack_threadinfo_request (rs
->buf
, fieldset
, threadid
);
2766 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2768 if (rs
->buf
[0] == '\0')
2771 result
= remote_unpack_thread_info_response (rs
->buf
+ 2,
2776 /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */
2779 pack_threadlist_request (char *pkt
, int startflag
, int threadcount
,
2780 threadref
*nextthread
)
2782 *pkt
++ = 'q'; /* info query packet */
2783 *pkt
++ = 'L'; /* Process LIST or threadLIST request */
2784 pkt
= pack_nibble (pkt
, startflag
); /* initflag 1 bytes */
2785 pkt
= pack_hex_byte (pkt
, threadcount
); /* threadcount 2 bytes */
2786 pkt
= pack_threadid (pkt
, nextthread
); /* 64 bit thread identifier */
2791 /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */
2794 parse_threadlist_response (char *pkt
, int result_limit
,
2795 threadref
*original_echo
, threadref
*resultlist
,
2798 struct remote_state
*rs
= get_remote_state ();
2800 int count
, resultcount
, done
;
2803 /* Assume the 'q' and 'M chars have been stripped. */
2804 limit
= pkt
+ (rs
->buf_size
- BUF_THREAD_ID_SIZE
);
2805 /* done parse past here */
2806 pkt
= unpack_byte (pkt
, &count
); /* count field */
2807 pkt
= unpack_nibble (pkt
, &done
);
2808 /* The first threadid is the argument threadid. */
2809 pkt
= unpack_threadid (pkt
, original_echo
); /* should match query packet */
2810 while ((count
-- > 0) && (pkt
< limit
))
2812 pkt
= unpack_threadid (pkt
, resultlist
++);
2813 if (resultcount
++ >= result_limit
)
2821 /* Fetch the next batch of threads from the remote. Returns -1 if the
2822 qL packet is not supported, 0 on error and 1 on success. */
2825 remote_get_threadlist (int startflag
, threadref
*nextthread
, int result_limit
,
2826 int *done
, int *result_count
, threadref
*threadlist
)
2828 struct remote_state
*rs
= get_remote_state ();
2831 /* Trancate result limit to be smaller than the packet size. */
2832 if ((((result_limit
+ 1) * BUF_THREAD_ID_SIZE
) + 10)
2833 >= get_remote_packet_size ())
2834 result_limit
= (get_remote_packet_size () / BUF_THREAD_ID_SIZE
) - 2;
2836 pack_threadlist_request (rs
->buf
, startflag
, result_limit
, nextthread
);
2838 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2839 if (*rs
->buf
== '\0')
2841 /* Packet not supported. */
2846 parse_threadlist_response (rs
->buf
+ 2, result_limit
,
2847 &rs
->echo_nextthread
, threadlist
, done
);
2849 if (!threadmatch (&rs
->echo_nextthread
, nextthread
))
2851 /* FIXME: This is a good reason to drop the packet. */
2852 /* Possably, there is a duplicate response. */
2854 retransmit immediatly - race conditions
2855 retransmit after timeout - yes
2857 wait for packet, then exit
2859 warning (_("HMM: threadlist did not echo arg thread, dropping it."));
2860 return 0; /* I choose simply exiting. */
2862 if (*result_count
<= 0)
2866 warning (_("RMT ERROR : failed to get remote thread list."));
2869 return result
; /* break; */
2871 if (*result_count
> result_limit
)
2874 warning (_("RMT ERROR: threadlist response longer than requested."));
2880 /* Fetch the list of remote threads, with the qL packet, and call
2881 STEPFUNCTION for each thread found. Stops iterating and returns 1
2882 if STEPFUNCTION returns true. Stops iterating and returns 0 if the
2883 STEPFUNCTION returns false. If the packet is not supported,
2887 remote_threadlist_iterator (rmt_thread_action stepfunction
, void *context
,
2890 struct remote_state
*rs
= get_remote_state ();
2891 int done
, i
, result_count
;
2899 if (loopcount
++ > looplimit
)
2902 warning (_("Remote fetch threadlist -infinite loop-."));
2905 result
= remote_get_threadlist (startflag
, &rs
->nextthread
,
2906 MAXTHREADLISTRESULTS
,
2907 &done
, &result_count
,
2908 rs
->resultthreadlist
);
2911 /* Clear for later iterations. */
2913 /* Setup to resume next batch of thread references, set nextthread. */
2914 if (result_count
>= 1)
2915 copy_threadref (&rs
->nextthread
,
2916 &rs
->resultthreadlist
[result_count
- 1]);
2918 while (result_count
--)
2920 if (!(*stepfunction
) (&rs
->resultthreadlist
[i
++], context
))
2930 /* A thread found on the remote target. */
2932 typedef struct thread_item
2934 /* The thread's PTID. */
2937 /* The thread's extra info. May be NULL. */
2940 /* The thread's name. May be NULL. */
2943 /* The core the thread was running on. -1 if not known. */
2946 DEF_VEC_O(thread_item_t
);
2948 /* Context passed around to the various methods listing remote
2949 threads. As new threads are found, they're added to the ITEMS
2952 struct threads_listing_context
2954 /* The threads found on the remote target. */
2955 VEC (thread_item_t
) *items
;
2958 /* Discard the contents of the constructed thread listing context. */
2961 clear_threads_listing_context (void *p
)
2963 struct threads_listing_context
*context
2964 = (struct threads_listing_context
*) p
;
2966 struct thread_item
*item
;
2968 for (i
= 0; VEC_iterate (thread_item_t
, context
->items
, i
, item
); ++i
)
2970 xfree (item
->extra
);
2974 VEC_free (thread_item_t
, context
->items
);
2977 /* Remove the thread specified as the related_pid field of WS
2978 from the CONTEXT list. */
2981 threads_listing_context_remove (struct target_waitstatus
*ws
,
2982 struct threads_listing_context
*context
)
2984 struct thread_item
*item
;
2986 ptid_t child_ptid
= ws
->value
.related_pid
;
2988 for (i
= 0; VEC_iterate (thread_item_t
, context
->items
, i
, item
); ++i
)
2990 if (ptid_equal (item
->ptid
, child_ptid
))
2992 VEC_ordered_remove (thread_item_t
, context
->items
, i
);
2999 remote_newthread_step (threadref
*ref
, void *data
)
3001 struct threads_listing_context
*context
3002 = (struct threads_listing_context
*) data
;
3003 struct thread_item item
;
3004 int pid
= ptid_get_pid (inferior_ptid
);
3006 item
.ptid
= ptid_build (pid
, threadref_to_int (ref
), 0);
3011 VEC_safe_push (thread_item_t
, context
->items
, &item
);
3013 return 1; /* continue iterator */
3016 #define CRAZY_MAX_THREADS 1000
3019 remote_current_thread (ptid_t oldpid
)
3021 struct remote_state
*rs
= get_remote_state ();
3024 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3025 if (rs
->buf
[0] == 'Q' && rs
->buf
[1] == 'C')
3030 result
= read_ptid (&rs
->buf
[2], &obuf
);
3031 if (*obuf
!= '\0' && remote_debug
)
3032 fprintf_unfiltered (gdb_stdlog
,
3033 "warning: garbage in qC reply\n");
3041 /* List remote threads using the deprecated qL packet. */
3044 remote_get_threads_with_ql (struct target_ops
*ops
,
3045 struct threads_listing_context
*context
)
3047 if (remote_threadlist_iterator (remote_newthread_step
, context
,
3048 CRAZY_MAX_THREADS
) >= 0)
3054 #if defined(HAVE_LIBEXPAT)
3057 start_thread (struct gdb_xml_parser
*parser
,
3058 const struct gdb_xml_element
*element
,
3059 void *user_data
, VEC(gdb_xml_value_s
) *attributes
)
3061 struct threads_listing_context
*data
3062 = (struct threads_listing_context
*) user_data
;
3064 struct thread_item item
;
3066 struct gdb_xml_value
*attr
;
3068 id
= (char *) xml_find_attribute (attributes
, "id")->value
;
3069 item
.ptid
= read_ptid (id
, NULL
);
3071 attr
= xml_find_attribute (attributes
, "core");
3073 item
.core
= *(ULONGEST
*) attr
->value
;
3077 attr
= xml_find_attribute (attributes
, "name");
3078 item
.name
= attr
!= NULL
? xstrdup ((const char *) attr
->value
) : NULL
;
3082 VEC_safe_push (thread_item_t
, data
->items
, &item
);
3086 end_thread (struct gdb_xml_parser
*parser
,
3087 const struct gdb_xml_element
*element
,
3088 void *user_data
, const char *body_text
)
3090 struct threads_listing_context
*data
3091 = (struct threads_listing_context
*) user_data
;
3093 if (body_text
&& *body_text
)
3094 VEC_last (thread_item_t
, data
->items
)->extra
= xstrdup (body_text
);
3097 const struct gdb_xml_attribute thread_attributes
[] = {
3098 { "id", GDB_XML_AF_NONE
, NULL
, NULL
},
3099 { "core", GDB_XML_AF_OPTIONAL
, gdb_xml_parse_attr_ulongest
, NULL
},
3100 { "name", GDB_XML_AF_OPTIONAL
, NULL
, NULL
},
3101 { NULL
, GDB_XML_AF_NONE
, NULL
, NULL
}
3104 const struct gdb_xml_element thread_children
[] = {
3105 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
3108 const struct gdb_xml_element threads_children
[] = {
3109 { "thread", thread_attributes
, thread_children
,
3110 GDB_XML_EF_REPEATABLE
| GDB_XML_EF_OPTIONAL
,
3111 start_thread
, end_thread
},
3112 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
3115 const struct gdb_xml_element threads_elements
[] = {
3116 { "threads", NULL
, threads_children
,
3117 GDB_XML_EF_NONE
, NULL
, NULL
},
3118 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
3123 /* List remote threads using qXfer:threads:read. */
3126 remote_get_threads_with_qxfer (struct target_ops
*ops
,
3127 struct threads_listing_context
*context
)
3129 #if defined(HAVE_LIBEXPAT)
3130 if (packet_support (PACKET_qXfer_threads
) == PACKET_ENABLE
)
3132 char *xml
= target_read_stralloc (ops
, TARGET_OBJECT_THREADS
, NULL
);
3133 struct cleanup
*back_to
= make_cleanup (xfree
, xml
);
3135 if (xml
!= NULL
&& *xml
!= '\0')
3137 gdb_xml_parse_quick (_("threads"), "threads.dtd",
3138 threads_elements
, xml
, context
);
3141 do_cleanups (back_to
);
3149 /* List remote threads using qfThreadInfo/qsThreadInfo. */
3152 remote_get_threads_with_qthreadinfo (struct target_ops
*ops
,
3153 struct threads_listing_context
*context
)
3155 struct remote_state
*rs
= get_remote_state ();
3157 if (rs
->use_threadinfo_query
)
3161 putpkt ("qfThreadInfo");
3162 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3164 if (bufp
[0] != '\0') /* q packet recognized */
3166 while (*bufp
++ == 'm') /* reply contains one or more TID */
3170 struct thread_item item
;
3172 item
.ptid
= read_ptid (bufp
, &bufp
);
3177 VEC_safe_push (thread_item_t
, context
->items
, &item
);
3179 while (*bufp
++ == ','); /* comma-separated list */
3180 putpkt ("qsThreadInfo");
3181 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3188 /* Packet not recognized. */
3189 rs
->use_threadinfo_query
= 0;
3196 /* Implement the to_update_thread_list function for the remote
3200 remote_update_thread_list (struct target_ops
*ops
)
3202 struct threads_listing_context context
;
3203 struct cleanup
*old_chain
;
3206 context
.items
= NULL
;
3207 old_chain
= make_cleanup (clear_threads_listing_context
, &context
);
3209 /* We have a few different mechanisms to fetch the thread list. Try
3210 them all, starting with the most preferred one first, falling
3211 back to older methods. */
3212 if (remote_get_threads_with_qxfer (ops
, &context
)
3213 || remote_get_threads_with_qthreadinfo (ops
, &context
)
3214 || remote_get_threads_with_ql (ops
, &context
))
3217 struct thread_item
*item
;
3218 struct thread_info
*tp
, *tmp
;
3222 if (VEC_empty (thread_item_t
, context
.items
)
3223 && remote_thread_always_alive (ops
, inferior_ptid
))
3225 /* Some targets don't really support threads, but still
3226 reply an (empty) thread list in response to the thread
3227 listing packets, instead of replying "packet not
3228 supported". Exit early so we don't delete the main
3230 do_cleanups (old_chain
);
3234 /* CONTEXT now holds the current thread list on the remote
3235 target end. Delete GDB-side threads no longer found on the
3237 ALL_THREADS_SAFE (tp
, tmp
)
3240 VEC_iterate (thread_item_t
, context
.items
, i
, item
);
3243 if (ptid_equal (item
->ptid
, tp
->ptid
))
3247 if (i
== VEC_length (thread_item_t
, context
.items
))
3250 delete_thread (tp
->ptid
);
3254 /* Remove any unreported fork child threads from CONTEXT so
3255 that we don't interfere with follow fork, which is where
3256 creation of such threads is handled. */
3257 remove_new_fork_children (&context
);
3259 /* And now add threads we don't know about yet to our list. */
3261 VEC_iterate (thread_item_t
, context
.items
, i
, item
);
3264 if (!ptid_equal (item
->ptid
, null_ptid
))
3266 struct private_thread_info
*info
;
3267 /* In non-stop mode, we assume new found threads are
3268 executing until proven otherwise with a stop reply.
3269 In all-stop, we can only get here if all threads are
3271 int executing
= target_is_non_stop_p () ? 1 : 0;
3273 remote_notice_new_inferior (item
->ptid
, executing
);
3275 info
= demand_private_info (item
->ptid
);
3276 info
->core
= item
->core
;
3277 info
->extra
= item
->extra
;
3279 info
->name
= item
->name
;
3287 /* If no thread listing method is supported, then query whether
3288 each known thread is alive, one by one, with the T packet.
3289 If the target doesn't support threads at all, then this is a
3290 no-op. See remote_thread_alive. */
3294 do_cleanups (old_chain
);
3298 * Collect a descriptive string about the given thread.
3299 * The target may say anything it wants to about the thread
3300 * (typically info about its blocked / runnable state, name, etc.).
3301 * This string will appear in the info threads display.
3303 * Optional: targets are not required to implement this function.
3307 remote_threads_extra_info (struct target_ops
*self
, struct thread_info
*tp
)
3309 struct remote_state
*rs
= get_remote_state ();
3313 struct gdb_ext_thread_info threadinfo
;
3314 static char display_buf
[100]; /* arbitrary... */
3315 int n
= 0; /* position in display_buf */
3317 if (rs
->remote_desc
== 0) /* paranoia */
3318 internal_error (__FILE__
, __LINE__
,
3319 _("remote_threads_extra_info"));
3321 if (ptid_equal (tp
->ptid
, magic_null_ptid
)
3322 || (ptid_get_pid (tp
->ptid
) != 0 && ptid_get_lwp (tp
->ptid
) == 0))
3323 /* This is the main thread which was added by GDB. The remote
3324 server doesn't know about it. */
3327 if (packet_support (PACKET_qXfer_threads
) == PACKET_ENABLE
)
3329 struct thread_info
*info
= find_thread_ptid (tp
->ptid
);
3331 if (info
&& info
->priv
)
3332 return info
->priv
->extra
;
3337 if (rs
->use_threadextra_query
)
3340 char *endb
= rs
->buf
+ get_remote_packet_size ();
3342 xsnprintf (b
, endb
- b
, "qThreadExtraInfo,");
3344 write_ptid (b
, endb
, tp
->ptid
);
3347 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3348 if (rs
->buf
[0] != 0)
3350 n
= min (strlen (rs
->buf
) / 2, sizeof (display_buf
));
3351 result
= hex2bin (rs
->buf
, (gdb_byte
*) display_buf
, n
);
3352 display_buf
[result
] = '\0';
3357 /* If the above query fails, fall back to the old method. */
3358 rs
->use_threadextra_query
= 0;
3359 set
= TAG_THREADID
| TAG_EXISTS
| TAG_THREADNAME
3360 | TAG_MOREDISPLAY
| TAG_DISPLAY
;
3361 int_to_threadref (&id
, ptid_get_lwp (tp
->ptid
));
3362 if (remote_get_threadinfo (&id
, set
, &threadinfo
))
3363 if (threadinfo
.active
)
3365 if (*threadinfo
.shortname
)
3366 n
+= xsnprintf (&display_buf
[0], sizeof (display_buf
) - n
,
3367 " Name: %s,", threadinfo
.shortname
);
3368 if (*threadinfo
.display
)
3369 n
+= xsnprintf (&display_buf
[n
], sizeof (display_buf
) - n
,
3370 " State: %s,", threadinfo
.display
);
3371 if (*threadinfo
.more_display
)
3372 n
+= xsnprintf (&display_buf
[n
], sizeof (display_buf
) - n
,
3373 " Priority: %s", threadinfo
.more_display
);
3377 /* For purely cosmetic reasons, clear up trailing commas. */
3378 if (',' == display_buf
[n
-1])
3379 display_buf
[n
-1] = ' ';
3388 remote_static_tracepoint_marker_at (struct target_ops
*self
, CORE_ADDR addr
,
3389 struct static_tracepoint_marker
*marker
)
3391 struct remote_state
*rs
= get_remote_state ();
3394 xsnprintf (p
, get_remote_packet_size (), "qTSTMat:");
3396 p
+= hexnumstr (p
, addr
);
3398 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3402 error (_("Remote failure reply: %s"), p
);
3406 parse_static_tracepoint_marker_definition (p
, &p
, marker
);
3413 static VEC(static_tracepoint_marker_p
) *
3414 remote_static_tracepoint_markers_by_strid (struct target_ops
*self
,
3417 struct remote_state
*rs
= get_remote_state ();
3418 VEC(static_tracepoint_marker_p
) *markers
= NULL
;
3419 struct static_tracepoint_marker
*marker
= NULL
;
3420 struct cleanup
*old_chain
;
3423 /* Ask for a first packet of static tracepoint marker
3426 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3429 error (_("Remote failure reply: %s"), p
);
3431 old_chain
= make_cleanup (free_current_marker
, &marker
);
3436 marker
= XCNEW (struct static_tracepoint_marker
);
3440 parse_static_tracepoint_marker_definition (p
, &p
, marker
);
3442 if (strid
== NULL
|| strcmp (strid
, marker
->str_id
) == 0)
3444 VEC_safe_push (static_tracepoint_marker_p
,
3450 release_static_tracepoint_marker (marker
);
3451 memset (marker
, 0, sizeof (*marker
));
3454 while (*p
++ == ','); /* comma-separated list */
3455 /* Ask for another packet of static tracepoint definition. */
3457 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3461 do_cleanups (old_chain
);
3466 /* Implement the to_get_ada_task_ptid function for the remote targets. */
3469 remote_get_ada_task_ptid (struct target_ops
*self
, long lwp
, long thread
)
3471 return ptid_build (ptid_get_pid (inferior_ptid
), lwp
, 0);
3475 /* Restart the remote side; this is an extended protocol operation. */
3478 extended_remote_restart (void)
3480 struct remote_state
*rs
= get_remote_state ();
3482 /* Send the restart command; for reasons I don't understand the
3483 remote side really expects a number after the "R". */
3484 xsnprintf (rs
->buf
, get_remote_packet_size (), "R%x", 0);
3487 remote_fileio_reset ();
3490 /* Clean up connection to a remote debugger. */
3493 remote_close (struct target_ops
*self
)
3495 struct remote_state
*rs
= get_remote_state ();
3497 if (rs
->remote_desc
== NULL
)
3498 return; /* already closed */
3500 /* Make sure we leave stdin registered in the event loop, and we
3501 don't leave the async SIGINT signal handler installed. */
3502 remote_terminal_ours (self
);
3504 serial_close (rs
->remote_desc
);
3505 rs
->remote_desc
= NULL
;
3507 /* We don't have a connection to the remote stub anymore. Get rid
3508 of all the inferiors and their threads we were controlling.
3509 Reset inferior_ptid to null_ptid first, as otherwise has_stack_frame
3510 will be unable to find the thread corresponding to (pid, 0, 0). */
3511 inferior_ptid
= null_ptid
;
3512 discard_all_inferiors ();
3514 /* We are closing the remote target, so we should discard
3515 everything of this target. */
3516 discard_pending_stop_replies_in_queue (rs
);
3518 if (remote_async_inferior_event_token
)
3519 delete_async_event_handler (&remote_async_inferior_event_token
);
3521 remote_notif_state_xfree (rs
->notif_state
);
3523 trace_reset_local_state ();
3526 /* Query the remote side for the text, data and bss offsets. */
3531 struct remote_state
*rs
= get_remote_state ();
3534 int lose
, num_segments
= 0, do_sections
, do_segments
;
3535 CORE_ADDR text_addr
, data_addr
, bss_addr
, segments
[2];
3536 struct section_offsets
*offs
;
3537 struct symfile_segment_data
*data
;
3539 if (symfile_objfile
== NULL
)
3542 putpkt ("qOffsets");
3543 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3546 if (buf
[0] == '\000')
3547 return; /* Return silently. Stub doesn't support
3551 warning (_("Remote failure reply: %s"), buf
);
3555 /* Pick up each field in turn. This used to be done with scanf, but
3556 scanf will make trouble if CORE_ADDR size doesn't match
3557 conversion directives correctly. The following code will work
3558 with any size of CORE_ADDR. */
3559 text_addr
= data_addr
= bss_addr
= 0;
3563 if (startswith (ptr
, "Text="))
3566 /* Don't use strtol, could lose on big values. */
3567 while (*ptr
&& *ptr
!= ';')
3568 text_addr
= (text_addr
<< 4) + fromhex (*ptr
++);
3570 if (startswith (ptr
, ";Data="))
3573 while (*ptr
&& *ptr
!= ';')
3574 data_addr
= (data_addr
<< 4) + fromhex (*ptr
++);
3579 if (!lose
&& startswith (ptr
, ";Bss="))
3582 while (*ptr
&& *ptr
!= ';')
3583 bss_addr
= (bss_addr
<< 4) + fromhex (*ptr
++);
3585 if (bss_addr
!= data_addr
)
3586 warning (_("Target reported unsupported offsets: %s"), buf
);
3591 else if (startswith (ptr
, "TextSeg="))
3594 /* Don't use strtol, could lose on big values. */
3595 while (*ptr
&& *ptr
!= ';')
3596 text_addr
= (text_addr
<< 4) + fromhex (*ptr
++);
3599 if (startswith (ptr
, ";DataSeg="))
3602 while (*ptr
&& *ptr
!= ';')
3603 data_addr
= (data_addr
<< 4) + fromhex (*ptr
++);
3611 error (_("Malformed response to offset query, %s"), buf
);
3612 else if (*ptr
!= '\0')
3613 warning (_("Target reported unsupported offsets: %s"), buf
);
3615 offs
= ((struct section_offsets
*)
3616 alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
)));
3617 memcpy (offs
, symfile_objfile
->section_offsets
,
3618 SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
));
3620 data
= get_symfile_segment_data (symfile_objfile
->obfd
);
3621 do_segments
= (data
!= NULL
);
3622 do_sections
= num_segments
== 0;
3624 if (num_segments
> 0)
3626 segments
[0] = text_addr
;
3627 segments
[1] = data_addr
;
3629 /* If we have two segments, we can still try to relocate everything
3630 by assuming that the .text and .data offsets apply to the whole
3631 text and data segments. Convert the offsets given in the packet
3632 to base addresses for symfile_map_offsets_to_segments. */
3633 else if (data
&& data
->num_segments
== 2)
3635 segments
[0] = data
->segment_bases
[0] + text_addr
;
3636 segments
[1] = data
->segment_bases
[1] + data_addr
;
3639 /* If the object file has only one segment, assume that it is text
3640 rather than data; main programs with no writable data are rare,
3641 but programs with no code are useless. Of course the code might
3642 have ended up in the data segment... to detect that we would need
3643 the permissions here. */
3644 else if (data
&& data
->num_segments
== 1)
3646 segments
[0] = data
->segment_bases
[0] + text_addr
;
3649 /* There's no way to relocate by segment. */
3655 int ret
= symfile_map_offsets_to_segments (symfile_objfile
->obfd
, data
,
3656 offs
, num_segments
, segments
);
3658 if (ret
== 0 && !do_sections
)
3659 error (_("Can not handle qOffsets TextSeg "
3660 "response with this symbol file"));
3667 free_symfile_segment_data (data
);
3671 offs
->offsets
[SECT_OFF_TEXT (symfile_objfile
)] = text_addr
;
3673 /* This is a temporary kludge to force data and bss to use the
3674 same offsets because that's what nlmconv does now. The real
3675 solution requires changes to the stub and remote.c that I
3676 don't have time to do right now. */
3678 offs
->offsets
[SECT_OFF_DATA (symfile_objfile
)] = data_addr
;
3679 offs
->offsets
[SECT_OFF_BSS (symfile_objfile
)] = data_addr
;
3682 objfile_relocate (symfile_objfile
, offs
);
3685 /* Send interrupt_sequence to remote target. */
3687 send_interrupt_sequence (void)
3689 struct remote_state
*rs
= get_remote_state ();
3691 if (interrupt_sequence_mode
== interrupt_sequence_control_c
)
3692 remote_serial_write ("\x03", 1);
3693 else if (interrupt_sequence_mode
== interrupt_sequence_break
)
3694 serial_send_break (rs
->remote_desc
);
3695 else if (interrupt_sequence_mode
== interrupt_sequence_break_g
)
3697 serial_send_break (rs
->remote_desc
);
3698 remote_serial_write ("g", 1);
3701 internal_error (__FILE__
, __LINE__
,
3702 _("Invalid value for interrupt_sequence_mode: %s."),
3703 interrupt_sequence_mode
);
3707 /* If STOP_REPLY is a T stop reply, look for the "thread" register,
3708 and extract the PTID. Returns NULL_PTID if not found. */
3711 stop_reply_extract_thread (char *stop_reply
)
3713 if (stop_reply
[0] == 'T' && strlen (stop_reply
) > 3)
3717 /* Txx r:val ; r:val (...) */
3720 /* Look for "register" named "thread". */
3725 p1
= strchr (p
, ':');
3729 if (strncmp (p
, "thread", p1
- p
) == 0)
3730 return read_ptid (++p1
, &p
);
3732 p1
= strchr (p
, ';');
3744 /* Determine the remote side's current thread. If we have a stop
3745 reply handy (in WAIT_STATUS), maybe it's a T stop reply with a
3746 "thread" register we can extract the current thread from. If not,
3747 ask the remote which is the current thread with qC. The former
3748 method avoids a roundtrip. */
3751 get_current_thread (char *wait_status
)
3753 ptid_t ptid
= null_ptid
;
3755 /* Note we don't use remote_parse_stop_reply as that makes use of
3756 the target architecture, which we haven't yet fully determined at
3758 if (wait_status
!= NULL
)
3759 ptid
= stop_reply_extract_thread (wait_status
);
3760 if (ptid_equal (ptid
, null_ptid
))
3761 ptid
= remote_current_thread (inferior_ptid
);
3766 /* Query the remote target for which is the current thread/process,
3767 add it to our tables, and update INFERIOR_PTID. The caller is
3768 responsible for setting the state such that the remote end is ready
3769 to return the current thread.
3771 This function is called after handling the '?' or 'vRun' packets,
3772 whose response is a stop reply from which we can also try
3773 extracting the thread. If the target doesn't support the explicit
3774 qC query, we infer the current thread from that stop reply, passed
3775 in in WAIT_STATUS, which may be NULL. */
3778 add_current_inferior_and_thread (char *wait_status
)
3780 struct remote_state
*rs
= get_remote_state ();
3784 inferior_ptid
= null_ptid
;
3786 /* Now, if we have thread information, update inferior_ptid. */
3787 ptid
= get_current_thread (wait_status
);
3789 if (!ptid_equal (ptid
, null_ptid
))
3791 if (!remote_multi_process_p (rs
))
3794 inferior_ptid
= ptid
;
3798 /* Without this, some commands which require an active target
3799 (such as kill) won't work. This variable serves (at least)
3800 double duty as both the pid of the target process (if it has
3801 such), and as a flag indicating that a target is active. */
3802 inferior_ptid
= magic_null_ptid
;
3806 remote_add_inferior (fake_pid_p
, ptid_get_pid (inferior_ptid
), -1, 1);
3808 /* Add the main thread. */
3809 add_thread_silent (inferior_ptid
);
3812 /* Print info about a thread that was found already stopped on
3816 print_one_stopped_thread (struct thread_info
*thread
)
3818 struct target_waitstatus
*ws
= &thread
->suspend
.waitstatus
;
3820 switch_to_thread (thread
->ptid
);
3821 stop_pc
= get_frame_pc (get_current_frame ());
3822 set_current_sal_from_frame (get_current_frame ());
3824 thread
->suspend
.waitstatus_pending_p
= 0;
3826 if (ws
->kind
== TARGET_WAITKIND_STOPPED
)
3828 enum gdb_signal sig
= ws
->value
.sig
;
3830 if (signal_print_state (sig
))
3831 observer_notify_signal_received (sig
);
3833 observer_notify_normal_stop (NULL
, 1);
3836 /* Process all initial stop replies the remote side sent in response
3837 to the ? packet. These indicate threads that were already stopped
3838 on initial connection. We mark these threads as stopped and print
3839 their current frame before giving the user the prompt. */
3842 process_initial_stop_replies (int from_tty
)
3844 int pending_stop_replies
= stop_reply_queue_length ();
3845 struct inferior
*inf
;
3846 struct thread_info
*thread
;
3847 struct thread_info
*selected
= NULL
;
3848 struct thread_info
*lowest_stopped
= NULL
;
3849 struct thread_info
*first
= NULL
;
3851 /* Consume the initial pending events. */
3852 while (pending_stop_replies
-- > 0)
3854 ptid_t waiton_ptid
= minus_one_ptid
;
3856 struct target_waitstatus ws
;
3857 int ignore_event
= 0;
3858 struct thread_info
*thread
;
3860 memset (&ws
, 0, sizeof (ws
));
3861 event_ptid
= target_wait (waiton_ptid
, &ws
, TARGET_WNOHANG
);
3863 print_target_wait_results (waiton_ptid
, event_ptid
, &ws
);
3867 case TARGET_WAITKIND_IGNORE
:
3868 case TARGET_WAITKIND_NO_RESUMED
:
3869 case TARGET_WAITKIND_SIGNALLED
:
3870 case TARGET_WAITKIND_EXITED
:
3871 /* We shouldn't see these, but if we do, just ignore. */
3873 fprintf_unfiltered (gdb_stdlog
, "remote: event ignored\n");
3877 case TARGET_WAITKIND_EXECD
:
3878 xfree (ws
.value
.execd_pathname
);
3887 thread
= find_thread_ptid (event_ptid
);
3889 if (ws
.kind
== TARGET_WAITKIND_STOPPED
)
3891 enum gdb_signal sig
= ws
.value
.sig
;
3893 /* Stubs traditionally report SIGTRAP as initial signal,
3894 instead of signal 0. Suppress it. */
3895 if (sig
== GDB_SIGNAL_TRAP
)
3897 thread
->suspend
.stop_signal
= sig
;
3901 thread
->suspend
.waitstatus
= ws
;
3903 if (ws
.kind
!= TARGET_WAITKIND_STOPPED
3904 || ws
.value
.sig
!= GDB_SIGNAL_0
)
3905 thread
->suspend
.waitstatus_pending_p
= 1;
3907 set_executing (event_ptid
, 0);
3908 set_running (event_ptid
, 0);
3911 /* "Notice" the new inferiors before anything related to
3912 registers/memory. */
3918 inf
->needs_setup
= 1;
3922 thread
= any_live_thread_of_process (inf
->pid
);
3923 notice_new_inferior (thread
->ptid
,
3924 thread
->state
== THREAD_RUNNING
,
3929 /* If all-stop on top of non-stop, pause all threads. Note this
3930 records the threads' stop pc, so must be done after "noticing"
3934 stop_all_threads ();
3936 /* If all threads of an inferior were already stopped, we
3937 haven't setup the inferior yet. */
3943 if (inf
->needs_setup
)
3945 thread
= any_live_thread_of_process (inf
->pid
);
3946 switch_to_thread_no_regs (thread
);
3952 /* Now go over all threads that are stopped, and print their current
3953 frame. If all-stop, then if there's a signalled thread, pick
3955 ALL_NON_EXITED_THREADS (thread
)
3961 set_running (thread
->ptid
, 0);
3962 else if (thread
->state
!= THREAD_STOPPED
)
3965 if (selected
== NULL
3966 && thread
->suspend
.waitstatus_pending_p
)
3969 if (lowest_stopped
== NULL
3970 || thread
->inf
->num
< lowest_stopped
->inf
->num
3971 || thread
->per_inf_num
< lowest_stopped
->per_inf_num
)
3972 lowest_stopped
= thread
;
3975 print_one_stopped_thread (thread
);
3978 /* In all-stop, we only print the status of one thread, and leave
3979 others with their status pending. */
3984 thread
= lowest_stopped
;
3988 print_one_stopped_thread (thread
);
3991 /* For "info program". */
3992 thread
= inferior_thread ();
3993 if (thread
->state
== THREAD_STOPPED
)
3994 set_last_target_status (inferior_ptid
, thread
->suspend
.waitstatus
);
3998 remote_start_remote (int from_tty
, struct target_ops
*target
, int extended_p
)
4000 struct remote_state
*rs
= get_remote_state ();
4001 struct packet_config
*noack_config
;
4002 char *wait_status
= NULL
;
4004 immediate_quit
++; /* Allow user to interrupt it. */
4007 if (interrupt_on_connect
)
4008 send_interrupt_sequence ();
4010 /* Ack any packet which the remote side has already sent. */
4011 serial_write (rs
->remote_desc
, "+", 1);
4013 /* Signal other parts that we're going through the initial setup,
4014 and so things may not be stable yet. */
4015 rs
->starting_up
= 1;
4017 /* The first packet we send to the target is the optional "supported
4018 packets" request. If the target can answer this, it will tell us
4019 which later probes to skip. */
4020 remote_query_supported ();
4022 /* If the stub wants to get a QAllow, compose one and send it. */
4023 if (packet_support (PACKET_QAllow
) != PACKET_DISABLE
)
4024 remote_set_permissions (target
);
4026 /* Next, we possibly activate noack mode.
4028 If the QStartNoAckMode packet configuration is set to AUTO,
4029 enable noack mode if the stub reported a wish for it with
4032 If set to TRUE, then enable noack mode even if the stub didn't
4033 report it in qSupported. If the stub doesn't reply OK, the
4034 session ends with an error.
4036 If FALSE, then don't activate noack mode, regardless of what the
4037 stub claimed should be the default with qSupported. */
4039 noack_config
= &remote_protocol_packets
[PACKET_QStartNoAckMode
];
4040 if (packet_config_support (noack_config
) != PACKET_DISABLE
)
4042 putpkt ("QStartNoAckMode");
4043 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4044 if (packet_ok (rs
->buf
, noack_config
) == PACKET_OK
)
4050 /* Tell the remote that we are using the extended protocol. */
4052 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4055 /* Let the target know which signals it is allowed to pass down to
4057 update_signals_program_target ();
4059 /* Next, if the target can specify a description, read it. We do
4060 this before anything involving memory or registers. */
4061 target_find_description ();
4063 /* Next, now that we know something about the target, update the
4064 address spaces in the program spaces. */
4065 update_address_spaces ();
4067 /* On OSs where the list of libraries is global to all
4068 processes, we fetch them early. */
4069 if (gdbarch_has_global_solist (target_gdbarch ()))
4070 solib_add (NULL
, from_tty
, target
, auto_solib_add
);
4072 if (target_is_non_stop_p ())
4074 if (packet_support (PACKET_QNonStop
) != PACKET_ENABLE
)
4075 error (_("Non-stop mode requested, but remote "
4076 "does not support non-stop"));
4078 putpkt ("QNonStop:1");
4079 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4081 if (strcmp (rs
->buf
, "OK") != 0)
4082 error (_("Remote refused setting non-stop mode with: %s"), rs
->buf
);
4084 /* Find about threads and processes the stub is already
4085 controlling. We default to adding them in the running state.
4086 The '?' query below will then tell us about which threads are
4088 remote_update_thread_list (target
);
4090 else if (packet_support (PACKET_QNonStop
) == PACKET_ENABLE
)
4092 /* Don't assume that the stub can operate in all-stop mode.
4093 Request it explicitly. */
4094 putpkt ("QNonStop:0");
4095 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4097 if (strcmp (rs
->buf
, "OK") != 0)
4098 error (_("Remote refused setting all-stop mode with: %s"), rs
->buf
);
4101 /* Upload TSVs regardless of whether the target is running or not. The
4102 remote stub, such as GDBserver, may have some predefined or builtin
4103 TSVs, even if the target is not running. */
4104 if (remote_get_trace_status (target
, current_trace_status ()) != -1)
4106 struct uploaded_tsv
*uploaded_tsvs
= NULL
;
4108 remote_upload_trace_state_variables (target
, &uploaded_tsvs
);
4109 merge_uploaded_trace_state_variables (&uploaded_tsvs
);
4112 /* Check whether the target is running now. */
4114 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4116 if (!target_is_non_stop_p ())
4118 if (rs
->buf
[0] == 'W' || rs
->buf
[0] == 'X')
4121 error (_("The target is not running (try extended-remote?)"));
4123 /* We're connected, but not running. Drop out before we
4124 call start_remote. */
4125 rs
->starting_up
= 0;
4130 /* Save the reply for later. */
4131 wait_status
= (char *) alloca (strlen (rs
->buf
) + 1);
4132 strcpy (wait_status
, rs
->buf
);
4135 /* Fetch thread list. */
4136 target_update_thread_list ();
4138 /* Let the stub know that we want it to return the thread. */
4139 set_continue_thread (minus_one_ptid
);
4141 if (thread_count () == 0)
4143 /* Target has no concept of threads at all. GDB treats
4144 non-threaded target as single-threaded; add a main
4146 add_current_inferior_and_thread (wait_status
);
4150 /* We have thread information; select the thread the target
4151 says should be current. If we're reconnecting to a
4152 multi-threaded program, this will ideally be the thread
4153 that last reported an event before GDB disconnected. */
4154 inferior_ptid
= get_current_thread (wait_status
);
4155 if (ptid_equal (inferior_ptid
, null_ptid
))
4157 /* Odd... The target was able to list threads, but not
4158 tell us which thread was current (no "thread"
4159 register in T stop reply?). Just pick the first
4160 thread in the thread list then. */
4163 fprintf_unfiltered (gdb_stdlog
,
4164 "warning: couldn't determine remote "
4165 "current thread; picking first in list.\n");
4167 inferior_ptid
= thread_list
->ptid
;
4171 /* init_wait_for_inferior should be called before get_offsets in order
4172 to manage `inserted' flag in bp loc in a correct state.
4173 breakpoint_init_inferior, called from init_wait_for_inferior, set
4174 `inserted' flag to 0, while before breakpoint_re_set, called from
4175 start_remote, set `inserted' flag to 1. In the initialization of
4176 inferior, breakpoint_init_inferior should be called first, and then
4177 breakpoint_re_set can be called. If this order is broken, state of
4178 `inserted' flag is wrong, and cause some problems on breakpoint
4180 init_wait_for_inferior ();
4182 get_offsets (); /* Get text, data & bss offsets. */
4184 /* If we could not find a description using qXfer, and we know
4185 how to do it some other way, try again. This is not
4186 supported for non-stop; it could be, but it is tricky if
4187 there are no stopped threads when we connect. */
4188 if (remote_read_description_p (target
)
4189 && gdbarch_target_desc (target_gdbarch ()) == NULL
)
4191 target_clear_description ();
4192 target_find_description ();
4195 /* Use the previously fetched status. */
4196 gdb_assert (wait_status
!= NULL
);
4197 strcpy (rs
->buf
, wait_status
);
4198 rs
->cached_wait_status
= 1;
4201 start_remote (from_tty
); /* Initialize gdb process mechanisms. */
4205 /* Clear WFI global state. Do this before finding about new
4206 threads and inferiors, and setting the current inferior.
4207 Otherwise we would clear the proceed status of the current
4208 inferior when we want its stop_soon state to be preserved
4209 (see notice_new_inferior). */
4210 init_wait_for_inferior ();
4212 /* In non-stop, we will either get an "OK", meaning that there
4213 are no stopped threads at this time; or, a regular stop
4214 reply. In the latter case, there may be more than one thread
4215 stopped --- we pull them all out using the vStopped
4217 if (strcmp (rs
->buf
, "OK") != 0)
4219 struct notif_client
*notif
= ¬if_client_stop
;
4221 /* remote_notif_get_pending_replies acks this one, and gets
4223 rs
->notif_state
->pending_event
[notif_client_stop
.id
]
4224 = remote_notif_parse (notif
, rs
->buf
);
4225 remote_notif_get_pending_events (notif
);
4228 if (thread_count () == 0)
4231 error (_("The target is not running (try extended-remote?)"));
4233 /* We're connected, but not running. Drop out before we
4234 call start_remote. */
4235 rs
->starting_up
= 0;
4239 /* In non-stop mode, any cached wait status will be stored in
4240 the stop reply queue. */
4241 gdb_assert (wait_status
== NULL
);
4243 /* Report all signals during attach/startup. */
4244 remote_pass_signals (target
, 0, NULL
);
4246 /* If there are already stopped threads, mark them stopped and
4247 report their stops before giving the prompt to the user. */
4248 process_initial_stop_replies (from_tty
);
4250 if (target_can_async_p ())
4254 /* If we connected to a live target, do some additional setup. */
4255 if (target_has_execution
)
4257 if (symfile_objfile
) /* No use without a symbol-file. */
4258 remote_check_symbols ();
4261 /* Possibly the target has been engaged in a trace run started
4262 previously; find out where things are at. */
4263 if (remote_get_trace_status (target
, current_trace_status ()) != -1)
4265 struct uploaded_tp
*uploaded_tps
= NULL
;
4267 if (current_trace_status ()->running
)
4268 printf_filtered (_("Trace is already running on the target.\n"));
4270 remote_upload_tracepoints (target
, &uploaded_tps
);
4272 merge_uploaded_tracepoints (&uploaded_tps
);
4275 /* The thread and inferior lists are now synchronized with the
4276 target, our symbols have been relocated, and we're merged the
4277 target's tracepoints with ours. We're done with basic start
4279 rs
->starting_up
= 0;
4281 /* Maybe breakpoints are global and need to be inserted now. */
4282 if (breakpoints_should_be_inserted_now ())
4283 insert_breakpoints ();
4286 /* Open a connection to a remote debugger.
4287 NAME is the filename used for communication. */
4290 remote_open (const char *name
, int from_tty
)
4292 remote_open_1 (name
, from_tty
, &remote_ops
, 0);
4295 /* Open a connection to a remote debugger using the extended
4296 remote gdb protocol. NAME is the filename used for communication. */
4299 extended_remote_open (const char *name
, int from_tty
)
4301 remote_open_1 (name
, from_tty
, &extended_remote_ops
, 1 /*extended_p */);
4304 /* Reset all packets back to "unknown support". Called when opening a
4305 new connection to a remote target. */
4308 reset_all_packet_configs_support (void)
4312 for (i
= 0; i
< PACKET_MAX
; i
++)
4313 remote_protocol_packets
[i
].support
= PACKET_SUPPORT_UNKNOWN
;
4316 /* Initialize all packet configs. */
4319 init_all_packet_configs (void)
4323 for (i
= 0; i
< PACKET_MAX
; i
++)
4325 remote_protocol_packets
[i
].detect
= AUTO_BOOLEAN_AUTO
;
4326 remote_protocol_packets
[i
].support
= PACKET_SUPPORT_UNKNOWN
;
4330 /* Symbol look-up. */
4333 remote_check_symbols (void)
4335 struct remote_state
*rs
= get_remote_state ();
4336 char *msg
, *reply
, *tmp
;
4339 struct cleanup
*old_chain
;
4341 /* The remote side has no concept of inferiors that aren't running
4342 yet, it only knows about running processes. If we're connected
4343 but our current inferior is not running, we should not invite the
4344 remote target to request symbol lookups related to its
4345 (unrelated) current process. */
4346 if (!target_has_execution
)
4349 if (packet_support (PACKET_qSymbol
) == PACKET_DISABLE
)
4352 /* Make sure the remote is pointing at the right process. Note
4353 there's no way to select "no process". */
4354 set_general_process ();
4356 /* Allocate a message buffer. We can't reuse the input buffer in RS,
4357 because we need both at the same time. */
4358 msg
= (char *) xmalloc (get_remote_packet_size ());
4359 old_chain
= make_cleanup (xfree
, msg
);
4360 reply
= (char *) xmalloc (get_remote_packet_size ());
4361 make_cleanup (free_current_contents
, &reply
);
4362 reply_size
= get_remote_packet_size ();
4364 /* Invite target to request symbol lookups. */
4366 putpkt ("qSymbol::");
4367 getpkt (&reply
, &reply_size
, 0);
4368 packet_ok (reply
, &remote_protocol_packets
[PACKET_qSymbol
]);
4370 while (startswith (reply
, "qSymbol:"))
4372 struct bound_minimal_symbol sym
;
4375 end
= hex2bin (tmp
, (gdb_byte
*) msg
, strlen (tmp
) / 2);
4377 sym
= lookup_minimal_symbol (msg
, NULL
, NULL
);
4378 if (sym
.minsym
== NULL
)
4379 xsnprintf (msg
, get_remote_packet_size (), "qSymbol::%s", &reply
[8]);
4382 int addr_size
= gdbarch_addr_bit (target_gdbarch ()) / 8;
4383 CORE_ADDR sym_addr
= BMSYMBOL_VALUE_ADDRESS (sym
);
4385 /* If this is a function address, return the start of code
4386 instead of any data function descriptor. */
4387 sym_addr
= gdbarch_convert_from_func_ptr_addr (target_gdbarch (),
4391 xsnprintf (msg
, get_remote_packet_size (), "qSymbol:%s:%s",
4392 phex_nz (sym_addr
, addr_size
), &reply
[8]);
4396 getpkt (&reply
, &reply_size
, 0);
4399 do_cleanups (old_chain
);
4402 static struct serial
*
4403 remote_serial_open (const char *name
)
4405 static int udp_warning
= 0;
4407 /* FIXME: Parsing NAME here is a hack. But we want to warn here instead
4408 of in ser-tcp.c, because it is the remote protocol assuming that the
4409 serial connection is reliable and not the serial connection promising
4411 if (!udp_warning
&& startswith (name
, "udp:"))
4413 warning (_("The remote protocol may be unreliable over UDP.\n"
4414 "Some events may be lost, rendering further debugging "
4419 return serial_open (name
);
4422 /* Inform the target of our permission settings. The permission flags
4423 work without this, but if the target knows the settings, it can do
4424 a couple things. First, it can add its own check, to catch cases
4425 that somehow manage to get by the permissions checks in target
4426 methods. Second, if the target is wired to disallow particular
4427 settings (for instance, a system in the field that is not set up to
4428 be able to stop at a breakpoint), it can object to any unavailable
4432 remote_set_permissions (struct target_ops
*self
)
4434 struct remote_state
*rs
= get_remote_state ();
4436 xsnprintf (rs
->buf
, get_remote_packet_size (), "QAllow:"
4437 "WriteReg:%x;WriteMem:%x;"
4438 "InsertBreak:%x;InsertTrace:%x;"
4439 "InsertFastTrace:%x;Stop:%x",
4440 may_write_registers
, may_write_memory
,
4441 may_insert_breakpoints
, may_insert_tracepoints
,
4442 may_insert_fast_tracepoints
, may_stop
);
4444 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4446 /* If the target didn't like the packet, warn the user. Do not try
4447 to undo the user's settings, that would just be maddening. */
4448 if (strcmp (rs
->buf
, "OK") != 0)
4449 warning (_("Remote refused setting permissions with: %s"), rs
->buf
);
4452 /* This type describes each known response to the qSupported
4454 struct protocol_feature
4456 /* The name of this protocol feature. */
4459 /* The default for this protocol feature. */
4460 enum packet_support default_support
;
4462 /* The function to call when this feature is reported, or after
4463 qSupported processing if the feature is not supported.
4464 The first argument points to this structure. The second
4465 argument indicates whether the packet requested support be
4466 enabled, disabled, or probed (or the default, if this function
4467 is being called at the end of processing and this feature was
4468 not reported). The third argument may be NULL; if not NULL, it
4469 is a NUL-terminated string taken from the packet following
4470 this feature's name and an equals sign. */
4471 void (*func
) (const struct protocol_feature
*, enum packet_support
,
4474 /* The corresponding packet for this feature. Only used if
4475 FUNC is remote_supported_packet. */
4480 remote_supported_packet (const struct protocol_feature
*feature
,
4481 enum packet_support support
,
4482 const char *argument
)
4486 warning (_("Remote qSupported response supplied an unexpected value for"
4487 " \"%s\"."), feature
->name
);
4491 remote_protocol_packets
[feature
->packet
].support
= support
;
4495 remote_packet_size (const struct protocol_feature
*feature
,
4496 enum packet_support support
, const char *value
)
4498 struct remote_state
*rs
= get_remote_state ();
4503 if (support
!= PACKET_ENABLE
)
4506 if (value
== NULL
|| *value
== '\0')
4508 warning (_("Remote target reported \"%s\" without a size."),
4514 packet_size
= strtol (value
, &value_end
, 16);
4515 if (errno
!= 0 || *value_end
!= '\0' || packet_size
< 0)
4517 warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."),
4518 feature
->name
, value
);
4522 /* Record the new maximum packet size. */
4523 rs
->explicit_packet_size
= packet_size
;
4526 static const struct protocol_feature remote_protocol_features
[] = {
4527 { "PacketSize", PACKET_DISABLE
, remote_packet_size
, -1 },
4528 { "qXfer:auxv:read", PACKET_DISABLE
, remote_supported_packet
,
4529 PACKET_qXfer_auxv
},
4530 { "qXfer:exec-file:read", PACKET_DISABLE
, remote_supported_packet
,
4531 PACKET_qXfer_exec_file
},
4532 { "qXfer:features:read", PACKET_DISABLE
, remote_supported_packet
,
4533 PACKET_qXfer_features
},
4534 { "qXfer:libraries:read", PACKET_DISABLE
, remote_supported_packet
,
4535 PACKET_qXfer_libraries
},
4536 { "qXfer:libraries-svr4:read", PACKET_DISABLE
, remote_supported_packet
,
4537 PACKET_qXfer_libraries_svr4
},
4538 { "augmented-libraries-svr4-read", PACKET_DISABLE
,
4539 remote_supported_packet
, PACKET_augmented_libraries_svr4_read_feature
},
4540 { "qXfer:memory-map:read", PACKET_DISABLE
, remote_supported_packet
,
4541 PACKET_qXfer_memory_map
},
4542 { "qXfer:spu:read", PACKET_DISABLE
, remote_supported_packet
,
4543 PACKET_qXfer_spu_read
},
4544 { "qXfer:spu:write", PACKET_DISABLE
, remote_supported_packet
,
4545 PACKET_qXfer_spu_write
},
4546 { "qXfer:osdata:read", PACKET_DISABLE
, remote_supported_packet
,
4547 PACKET_qXfer_osdata
},
4548 { "qXfer:threads:read", PACKET_DISABLE
, remote_supported_packet
,
4549 PACKET_qXfer_threads
},
4550 { "qXfer:traceframe-info:read", PACKET_DISABLE
, remote_supported_packet
,
4551 PACKET_qXfer_traceframe_info
},
4552 { "QPassSignals", PACKET_DISABLE
, remote_supported_packet
,
4553 PACKET_QPassSignals
},
4554 { "QCatchSyscalls", PACKET_DISABLE
, remote_supported_packet
,
4555 PACKET_QCatchSyscalls
},
4556 { "QProgramSignals", PACKET_DISABLE
, remote_supported_packet
,
4557 PACKET_QProgramSignals
},
4558 { "QStartNoAckMode", PACKET_DISABLE
, remote_supported_packet
,
4559 PACKET_QStartNoAckMode
},
4560 { "multiprocess", PACKET_DISABLE
, remote_supported_packet
,
4561 PACKET_multiprocess_feature
},
4562 { "QNonStop", PACKET_DISABLE
, remote_supported_packet
, PACKET_QNonStop
},
4563 { "qXfer:siginfo:read", PACKET_DISABLE
, remote_supported_packet
,
4564 PACKET_qXfer_siginfo_read
},
4565 { "qXfer:siginfo:write", PACKET_DISABLE
, remote_supported_packet
,
4566 PACKET_qXfer_siginfo_write
},
4567 { "ConditionalTracepoints", PACKET_DISABLE
, remote_supported_packet
,
4568 PACKET_ConditionalTracepoints
},
4569 { "ConditionalBreakpoints", PACKET_DISABLE
, remote_supported_packet
,
4570 PACKET_ConditionalBreakpoints
},
4571 { "BreakpointCommands", PACKET_DISABLE
, remote_supported_packet
,
4572 PACKET_BreakpointCommands
},
4573 { "FastTracepoints", PACKET_DISABLE
, remote_supported_packet
,
4574 PACKET_FastTracepoints
},
4575 { "StaticTracepoints", PACKET_DISABLE
, remote_supported_packet
,
4576 PACKET_StaticTracepoints
},
4577 {"InstallInTrace", PACKET_DISABLE
, remote_supported_packet
,
4578 PACKET_InstallInTrace
},
4579 { "DisconnectedTracing", PACKET_DISABLE
, remote_supported_packet
,
4580 PACKET_DisconnectedTracing_feature
},
4581 { "ReverseContinue", PACKET_DISABLE
, remote_supported_packet
,
4583 { "ReverseStep", PACKET_DISABLE
, remote_supported_packet
,
4585 { "TracepointSource", PACKET_DISABLE
, remote_supported_packet
,
4586 PACKET_TracepointSource
},
4587 { "QAllow", PACKET_DISABLE
, remote_supported_packet
,
4589 { "EnableDisableTracepoints", PACKET_DISABLE
, remote_supported_packet
,
4590 PACKET_EnableDisableTracepoints_feature
},
4591 { "qXfer:fdpic:read", PACKET_DISABLE
, remote_supported_packet
,
4592 PACKET_qXfer_fdpic
},
4593 { "qXfer:uib:read", PACKET_DISABLE
, remote_supported_packet
,
4595 { "QDisableRandomization", PACKET_DISABLE
, remote_supported_packet
,
4596 PACKET_QDisableRandomization
},
4597 { "QAgent", PACKET_DISABLE
, remote_supported_packet
, PACKET_QAgent
},
4598 { "QTBuffer:size", PACKET_DISABLE
,
4599 remote_supported_packet
, PACKET_QTBuffer_size
},
4600 { "tracenz", PACKET_DISABLE
, remote_supported_packet
, PACKET_tracenz_feature
},
4601 { "Qbtrace:off", PACKET_DISABLE
, remote_supported_packet
, PACKET_Qbtrace_off
},
4602 { "Qbtrace:bts", PACKET_DISABLE
, remote_supported_packet
, PACKET_Qbtrace_bts
},
4603 { "Qbtrace:pt", PACKET_DISABLE
, remote_supported_packet
, PACKET_Qbtrace_pt
},
4604 { "qXfer:btrace:read", PACKET_DISABLE
, remote_supported_packet
,
4605 PACKET_qXfer_btrace
},
4606 { "qXfer:btrace-conf:read", PACKET_DISABLE
, remote_supported_packet
,
4607 PACKET_qXfer_btrace_conf
},
4608 { "Qbtrace-conf:bts:size", PACKET_DISABLE
, remote_supported_packet
,
4609 PACKET_Qbtrace_conf_bts_size
},
4610 { "swbreak", PACKET_DISABLE
, remote_supported_packet
, PACKET_swbreak_feature
},
4611 { "hwbreak", PACKET_DISABLE
, remote_supported_packet
, PACKET_hwbreak_feature
},
4612 { "fork-events", PACKET_DISABLE
, remote_supported_packet
,
4613 PACKET_fork_event_feature
},
4614 { "vfork-events", PACKET_DISABLE
, remote_supported_packet
,
4615 PACKET_vfork_event_feature
},
4616 { "exec-events", PACKET_DISABLE
, remote_supported_packet
,
4617 PACKET_exec_event_feature
},
4618 { "Qbtrace-conf:pt:size", PACKET_DISABLE
, remote_supported_packet
,
4619 PACKET_Qbtrace_conf_pt_size
},
4620 { "vContSupported", PACKET_DISABLE
, remote_supported_packet
, PACKET_vContSupported
},
4621 { "QThreadEvents", PACKET_DISABLE
, remote_supported_packet
, PACKET_QThreadEvents
},
4622 { "no-resumed", PACKET_DISABLE
, remote_supported_packet
, PACKET_no_resumed
},
4625 static char *remote_support_xml
;
4627 /* Register string appended to "xmlRegisters=" in qSupported query. */
4630 register_remote_support_xml (const char *xml
)
4632 #if defined(HAVE_LIBEXPAT)
4633 if (remote_support_xml
== NULL
)
4634 remote_support_xml
= concat ("xmlRegisters=", xml
, (char *) NULL
);
4637 char *copy
= xstrdup (remote_support_xml
+ 13);
4638 char *p
= strtok (copy
, ",");
4642 if (strcmp (p
, xml
) == 0)
4649 while ((p
= strtok (NULL
, ",")) != NULL
);
4652 remote_support_xml
= reconcat (remote_support_xml
,
4653 remote_support_xml
, ",", xml
,
4660 remote_query_supported_append (char *msg
, const char *append
)
4663 return reconcat (msg
, msg
, ";", append
, (char *) NULL
);
4665 return xstrdup (append
);
4669 remote_query_supported (void)
4671 struct remote_state
*rs
= get_remote_state ();
4674 unsigned char seen
[ARRAY_SIZE (remote_protocol_features
)];
4676 /* The packet support flags are handled differently for this packet
4677 than for most others. We treat an error, a disabled packet, and
4678 an empty response identically: any features which must be reported
4679 to be used will be automatically disabled. An empty buffer
4680 accomplishes this, since that is also the representation for a list
4681 containing no features. */
4684 if (packet_support (PACKET_qSupported
) != PACKET_DISABLE
)
4687 struct cleanup
*old_chain
= make_cleanup (free_current_contents
, &q
);
4689 if (packet_set_cmd_state (PACKET_multiprocess_feature
) != AUTO_BOOLEAN_FALSE
)
4690 q
= remote_query_supported_append (q
, "multiprocess+");
4692 if (packet_set_cmd_state (PACKET_swbreak_feature
) != AUTO_BOOLEAN_FALSE
)
4693 q
= remote_query_supported_append (q
, "swbreak+");
4694 if (packet_set_cmd_state (PACKET_hwbreak_feature
) != AUTO_BOOLEAN_FALSE
)
4695 q
= remote_query_supported_append (q
, "hwbreak+");
4697 q
= remote_query_supported_append (q
, "qRelocInsn+");
4699 if (packet_set_cmd_state (PACKET_fork_event_feature
)
4700 != AUTO_BOOLEAN_FALSE
)
4701 q
= remote_query_supported_append (q
, "fork-events+");
4702 if (packet_set_cmd_state (PACKET_vfork_event_feature
)
4703 != AUTO_BOOLEAN_FALSE
)
4704 q
= remote_query_supported_append (q
, "vfork-events+");
4705 if (packet_set_cmd_state (PACKET_exec_event_feature
)
4706 != AUTO_BOOLEAN_FALSE
)
4707 q
= remote_query_supported_append (q
, "exec-events+");
4709 if (packet_set_cmd_state (PACKET_vContSupported
) != AUTO_BOOLEAN_FALSE
)
4710 q
= remote_query_supported_append (q
, "vContSupported+");
4712 if (packet_set_cmd_state (PACKET_QThreadEvents
) != AUTO_BOOLEAN_FALSE
)
4713 q
= remote_query_supported_append (q
, "QThreadEvents+");
4715 if (packet_set_cmd_state (PACKET_no_resumed
) != AUTO_BOOLEAN_FALSE
)
4716 q
= remote_query_supported_append (q
, "no-resumed+");
4718 /* Keep this one last to work around a gdbserver <= 7.10 bug in
4719 the qSupported:xmlRegisters=i386 handling. */
4720 if (remote_support_xml
!= NULL
)
4721 q
= remote_query_supported_append (q
, remote_support_xml
);
4723 q
= reconcat (q
, "qSupported:", q
, (char *) NULL
);
4726 do_cleanups (old_chain
);
4728 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4730 /* If an error occured, warn, but do not return - just reset the
4731 buffer to empty and go on to disable features. */
4732 if (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_qSupported
])
4735 warning (_("Remote failure reply: %s"), rs
->buf
);
4740 memset (seen
, 0, sizeof (seen
));
4745 enum packet_support is_supported
;
4746 char *p
, *end
, *name_end
, *value
;
4748 /* First separate out this item from the rest of the packet. If
4749 there's another item after this, we overwrite the separator
4750 (terminated strings are much easier to work with). */
4752 end
= strchr (p
, ';');
4755 end
= p
+ strlen (p
);
4765 warning (_("empty item in \"qSupported\" response"));
4770 name_end
= strchr (p
, '=');
4773 /* This is a name=value entry. */
4774 is_supported
= PACKET_ENABLE
;
4775 value
= name_end
+ 1;
4784 is_supported
= PACKET_ENABLE
;
4788 is_supported
= PACKET_DISABLE
;
4792 is_supported
= PACKET_SUPPORT_UNKNOWN
;
4796 warning (_("unrecognized item \"%s\" "
4797 "in \"qSupported\" response"), p
);
4803 for (i
= 0; i
< ARRAY_SIZE (remote_protocol_features
); i
++)
4804 if (strcmp (remote_protocol_features
[i
].name
, p
) == 0)
4806 const struct protocol_feature
*feature
;
4809 feature
= &remote_protocol_features
[i
];
4810 feature
->func (feature
, is_supported
, value
);
4815 /* If we increased the packet size, make sure to increase the global
4816 buffer size also. We delay this until after parsing the entire
4817 qSupported packet, because this is the same buffer we were
4819 if (rs
->buf_size
< rs
->explicit_packet_size
)
4821 rs
->buf_size
= rs
->explicit_packet_size
;
4822 rs
->buf
= (char *) xrealloc (rs
->buf
, rs
->buf_size
);
4825 /* Handle the defaults for unmentioned features. */
4826 for (i
= 0; i
< ARRAY_SIZE (remote_protocol_features
); i
++)
4829 const struct protocol_feature
*feature
;
4831 feature
= &remote_protocol_features
[i
];
4832 feature
->func (feature
, feature
->default_support
, NULL
);
4836 /* Remove any of the remote.c targets from target stack. Upper targets depend
4837 on it so remove them first. */
4840 remote_unpush_target (void)
4842 pop_all_targets_at_and_above (process_stratum
);
4846 remote_open_1 (const char *name
, int from_tty
,
4847 struct target_ops
*target
, int extended_p
)
4849 struct remote_state
*rs
= get_remote_state ();
4852 error (_("To open a remote debug connection, you need to specify what\n"
4853 "serial device is attached to the remote system\n"
4854 "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."));
4856 /* See FIXME above. */
4857 if (!target_async_permitted
)
4858 wait_forever_enabled_p
= 1;
4860 /* If we're connected to a running target, target_preopen will kill it.
4861 Ask this question first, before target_preopen has a chance to kill
4863 if (rs
->remote_desc
!= NULL
&& !have_inferiors ())
4866 && !query (_("Already connected to a remote target. Disconnect? ")))
4867 error (_("Still connected."));
4870 /* Here the possibly existing remote target gets unpushed. */
4871 target_preopen (from_tty
);
4873 /* Make sure we send the passed signals list the next time we resume. */
4874 xfree (rs
->last_pass_packet
);
4875 rs
->last_pass_packet
= NULL
;
4877 /* Make sure we send the program signals list the next time we
4879 xfree (rs
->last_program_signals_packet
);
4880 rs
->last_program_signals_packet
= NULL
;
4882 remote_fileio_reset ();
4883 reopen_exec_file ();
4886 rs
->remote_desc
= remote_serial_open (name
);
4887 if (!rs
->remote_desc
)
4888 perror_with_name (name
);
4890 if (baud_rate
!= -1)
4892 if (serial_setbaudrate (rs
->remote_desc
, baud_rate
))
4894 /* The requested speed could not be set. Error out to
4895 top level after closing remote_desc. Take care to
4896 set remote_desc to NULL to avoid closing remote_desc
4898 serial_close (rs
->remote_desc
);
4899 rs
->remote_desc
= NULL
;
4900 perror_with_name (name
);
4904 serial_setparity (rs
->remote_desc
, serial_parity
);
4905 serial_raw (rs
->remote_desc
);
4907 /* If there is something sitting in the buffer we might take it as a
4908 response to a command, which would be bad. */
4909 serial_flush_input (rs
->remote_desc
);
4913 puts_filtered ("Remote debugging using ");
4914 puts_filtered (name
);
4915 puts_filtered ("\n");
4917 push_target (target
); /* Switch to using remote target now. */
4919 /* Register extra event sources in the event loop. */
4920 remote_async_inferior_event_token
4921 = create_async_event_handler (remote_async_inferior_event_handler
,
4923 rs
->notif_state
= remote_notif_state_allocate ();
4925 /* Reset the target state; these things will be queried either by
4926 remote_query_supported or as they are needed. */
4927 reset_all_packet_configs_support ();
4928 rs
->cached_wait_status
= 0;
4929 rs
->explicit_packet_size
= 0;
4931 rs
->extended
= extended_p
;
4932 rs
->waiting_for_stop_reply
= 0;
4933 rs
->ctrlc_pending_p
= 0;
4935 rs
->general_thread
= not_sent_ptid
;
4936 rs
->continue_thread
= not_sent_ptid
;
4937 rs
->remote_traceframe_number
= -1;
4939 /* Probe for ability to use "ThreadInfo" query, as required. */
4940 rs
->use_threadinfo_query
= 1;
4941 rs
->use_threadextra_query
= 1;
4943 readahead_cache_invalidate ();
4945 if (target_async_permitted
)
4947 /* With this target we start out by owning the terminal. */
4948 remote_async_terminal_ours_p
= 1;
4950 /* FIXME: cagney/1999-09-23: During the initial connection it is
4951 assumed that the target is already ready and able to respond to
4952 requests. Unfortunately remote_start_remote() eventually calls
4953 wait_for_inferior() with no timeout. wait_forever_enabled_p gets
4954 around this. Eventually a mechanism that allows
4955 wait_for_inferior() to expect/get timeouts will be
4957 wait_forever_enabled_p
= 0;
4960 /* First delete any symbols previously loaded from shared libraries. */
4961 no_shared_libraries (NULL
, 0);
4964 init_thread_list ();
4966 /* Start the remote connection. If error() or QUIT, discard this
4967 target (we'd otherwise be in an inconsistent state) and then
4968 propogate the error on up the exception chain. This ensures that
4969 the caller doesn't stumble along blindly assuming that the
4970 function succeeded. The CLI doesn't have this problem but other
4971 UI's, such as MI do.
4973 FIXME: cagney/2002-05-19: Instead of re-throwing the exception,
4974 this function should return an error indication letting the
4975 caller restore the previous state. Unfortunately the command
4976 ``target remote'' is directly wired to this function making that
4977 impossible. On a positive note, the CLI side of this problem has
4978 been fixed - the function set_cmd_context() makes it possible for
4979 all the ``target ....'' commands to share a common callback
4980 function. See cli-dump.c. */
4985 remote_start_remote (from_tty
, target
, extended_p
);
4987 CATCH (ex
, RETURN_MASK_ALL
)
4989 /* Pop the partially set up target - unless something else did
4990 already before throwing the exception. */
4991 if (rs
->remote_desc
!= NULL
)
4992 remote_unpush_target ();
4993 if (target_async_permitted
)
4994 wait_forever_enabled_p
= 1;
4995 throw_exception (ex
);
5000 remote_btrace_reset ();
5002 if (target_async_permitted
)
5003 wait_forever_enabled_p
= 1;
5006 /* Detach the specified process. */
5009 remote_detach_pid (int pid
)
5011 struct remote_state
*rs
= get_remote_state ();
5013 if (remote_multi_process_p (rs
))
5014 xsnprintf (rs
->buf
, get_remote_packet_size (), "D;%x", pid
);
5016 strcpy (rs
->buf
, "D");
5019 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5021 if (rs
->buf
[0] == 'O' && rs
->buf
[1] == 'K')
5023 else if (rs
->buf
[0] == '\0')
5024 error (_("Remote doesn't know how to detach"));
5026 error (_("Can't detach process."));
5029 /* This detaches a program to which we previously attached, using
5030 inferior_ptid to identify the process. After this is done, GDB
5031 can be used to debug some other program. We better not have left
5032 any breakpoints in the target program or it'll die when it hits
5036 remote_detach_1 (const char *args
, int from_tty
)
5038 int pid
= ptid_get_pid (inferior_ptid
);
5039 struct remote_state
*rs
= get_remote_state ();
5040 struct thread_info
*tp
= find_thread_ptid (inferior_ptid
);
5044 error (_("Argument given to \"detach\" when remotely debugging."));
5046 if (!target_has_execution
)
5047 error (_("No process to detach from."));
5051 char *exec_file
= get_exec_file (0);
5052 if (exec_file
== NULL
)
5054 printf_unfiltered (_("Detaching from program: %s, %s\n"), exec_file
,
5055 target_pid_to_str (pid_to_ptid (pid
)));
5056 gdb_flush (gdb_stdout
);
5059 /* Tell the remote target to detach. */
5060 remote_detach_pid (pid
);
5062 /* Exit only if this is the only active inferior. */
5063 if (from_tty
&& !rs
->extended
&& number_of_live_inferiors () == 1)
5064 puts_filtered (_("Ending remote debugging.\n"));
5066 /* Check to see if we are detaching a fork parent. Note that if we
5067 are detaching a fork child, tp == NULL. */
5068 is_fork_parent
= (tp
!= NULL
5069 && tp
->pending_follow
.kind
== TARGET_WAITKIND_FORKED
);
5071 /* If doing detach-on-fork, we don't mourn, because that will delete
5072 breakpoints that should be available for the followed inferior. */
5073 if (!is_fork_parent
)
5074 target_mourn_inferior ();
5077 inferior_ptid
= null_ptid
;
5078 detach_inferior (pid
);
5083 remote_detach (struct target_ops
*ops
, const char *args
, int from_tty
)
5085 remote_detach_1 (args
, from_tty
);
5089 extended_remote_detach (struct target_ops
*ops
, const char *args
, int from_tty
)
5091 remote_detach_1 (args
, from_tty
);
5094 /* Target follow-fork function for remote targets. On entry, and
5095 at return, the current inferior is the fork parent.
5097 Note that although this is currently only used for extended-remote,
5098 it is named remote_follow_fork in anticipation of using it for the
5099 remote target as well. */
5102 remote_follow_fork (struct target_ops
*ops
, int follow_child
,
5105 struct remote_state
*rs
= get_remote_state ();
5106 enum target_waitkind kind
= inferior_thread ()->pending_follow
.kind
;
5108 if ((kind
== TARGET_WAITKIND_FORKED
&& remote_fork_event_p (rs
))
5109 || (kind
== TARGET_WAITKIND_VFORKED
&& remote_vfork_event_p (rs
)))
5111 /* When following the parent and detaching the child, we detach
5112 the child here. For the case of following the child and
5113 detaching the parent, the detach is done in the target-
5114 independent follow fork code in infrun.c. We can't use
5115 target_detach when detaching an unfollowed child because
5116 the client side doesn't know anything about the child. */
5117 if (detach_fork
&& !follow_child
)
5119 /* Detach the fork child. */
5123 child_ptid
= inferior_thread ()->pending_follow
.value
.related_pid
;
5124 child_pid
= ptid_get_pid (child_ptid
);
5126 remote_detach_pid (child_pid
);
5127 detach_inferior (child_pid
);
5133 /* Target follow-exec function for remote targets. Save EXECD_PATHNAME
5134 in the program space of the new inferior. On entry and at return the
5135 current inferior is the exec'ing inferior. INF is the new exec'd
5136 inferior, which may be the same as the exec'ing inferior unless
5137 follow-exec-mode is "new". */
5140 remote_follow_exec (struct target_ops
*ops
,
5141 struct inferior
*inf
, char *execd_pathname
)
5143 /* We know that this is a target file name, so if it has the "target:"
5144 prefix we strip it off before saving it in the program space. */
5145 if (is_target_filename (execd_pathname
))
5146 execd_pathname
+= strlen (TARGET_SYSROOT_PREFIX
);
5148 set_pspace_remote_exec_file (inf
->pspace
, execd_pathname
);
5151 /* Same as remote_detach, but don't send the "D" packet; just disconnect. */
5154 remote_disconnect (struct target_ops
*target
, const char *args
, int from_tty
)
5157 error (_("Argument given to \"disconnect\" when remotely debugging."));
5159 /* Make sure we unpush even the extended remote targets. Calling
5160 target_mourn_inferior won't unpush, and remote_mourn won't
5161 unpush if there is more than one inferior left. */
5162 unpush_target (target
);
5163 generic_mourn_inferior ();
5166 puts_filtered ("Ending remote debugging.\n");
5169 /* Attach to the process specified by ARGS. If FROM_TTY is non-zero,
5170 be chatty about it. */
5173 extended_remote_attach (struct target_ops
*target
, const char *args
,
5176 struct remote_state
*rs
= get_remote_state ();
5178 char *wait_status
= NULL
;
5180 pid
= parse_pid_to_attach (args
);
5182 /* Remote PID can be freely equal to getpid, do not check it here the same
5183 way as in other targets. */
5185 if (packet_support (PACKET_vAttach
) == PACKET_DISABLE
)
5186 error (_("This target does not support attaching to a process"));
5190 char *exec_file
= get_exec_file (0);
5193 printf_unfiltered (_("Attaching to program: %s, %s\n"), exec_file
,
5194 target_pid_to_str (pid_to_ptid (pid
)));
5196 printf_unfiltered (_("Attaching to %s\n"),
5197 target_pid_to_str (pid_to_ptid (pid
)));
5199 gdb_flush (gdb_stdout
);
5202 xsnprintf (rs
->buf
, get_remote_packet_size (), "vAttach;%x", pid
);
5204 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5206 switch (packet_ok (rs
->buf
,
5207 &remote_protocol_packets
[PACKET_vAttach
]))
5210 if (!target_is_non_stop_p ())
5212 /* Save the reply for later. */
5213 wait_status
= (char *) alloca (strlen (rs
->buf
) + 1);
5214 strcpy (wait_status
, rs
->buf
);
5216 else if (strcmp (rs
->buf
, "OK") != 0)
5217 error (_("Attaching to %s failed with: %s"),
5218 target_pid_to_str (pid_to_ptid (pid
)),
5221 case PACKET_UNKNOWN
:
5222 error (_("This target does not support attaching to a process"));
5224 error (_("Attaching to %s failed"),
5225 target_pid_to_str (pid_to_ptid (pid
)));
5228 set_current_inferior (remote_add_inferior (0, pid
, 1, 0));
5230 inferior_ptid
= pid_to_ptid (pid
);
5232 if (target_is_non_stop_p ())
5234 struct thread_info
*thread
;
5236 /* Get list of threads. */
5237 remote_update_thread_list (target
);
5239 thread
= first_thread_of_process (pid
);
5241 inferior_ptid
= thread
->ptid
;
5243 inferior_ptid
= pid_to_ptid (pid
);
5245 /* Invalidate our notion of the remote current thread. */
5246 record_currthread (rs
, minus_one_ptid
);
5250 /* Now, if we have thread information, update inferior_ptid. */
5251 inferior_ptid
= remote_current_thread (inferior_ptid
);
5253 /* Add the main thread to the thread list. */
5254 add_thread_silent (inferior_ptid
);
5257 /* Next, if the target can specify a description, read it. We do
5258 this before anything involving memory or registers. */
5259 target_find_description ();
5261 if (!target_is_non_stop_p ())
5263 /* Use the previously fetched status. */
5264 gdb_assert (wait_status
!= NULL
);
5266 if (target_can_async_p ())
5268 struct notif_event
*reply
5269 = remote_notif_parse (¬if_client_stop
, wait_status
);
5271 push_stop_reply ((struct stop_reply
*) reply
);
5277 gdb_assert (wait_status
!= NULL
);
5278 strcpy (rs
->buf
, wait_status
);
5279 rs
->cached_wait_status
= 1;
5283 gdb_assert (wait_status
== NULL
);
5286 /* Implementation of the to_post_attach method. */
5289 extended_remote_post_attach (struct target_ops
*ops
, int pid
)
5291 /* Get text, data & bss offsets. */
5294 /* In certain cases GDB might not have had the chance to start
5295 symbol lookup up until now. This could happen if the debugged
5296 binary is not using shared libraries, the vsyscall page is not
5297 present (on Linux) and the binary itself hadn't changed since the
5298 debugging process was started. */
5299 if (symfile_objfile
!= NULL
)
5300 remote_check_symbols();
5304 /* Check for the availability of vCont. This function should also check
5308 remote_vcont_probe (struct remote_state
*rs
)
5312 strcpy (rs
->buf
, "vCont?");
5314 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5317 /* Make sure that the features we assume are supported. */
5318 if (startswith (buf
, "vCont"))
5321 int support_c
, support_C
;
5323 rs
->supports_vCont
.s
= 0;
5324 rs
->supports_vCont
.S
= 0;
5327 rs
->supports_vCont
.t
= 0;
5328 rs
->supports_vCont
.r
= 0;
5329 while (p
&& *p
== ';')
5332 if (*p
== 's' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
5333 rs
->supports_vCont
.s
= 1;
5334 else if (*p
== 'S' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
5335 rs
->supports_vCont
.S
= 1;
5336 else if (*p
== 'c' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
5338 else if (*p
== 'C' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
5340 else if (*p
== 't' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
5341 rs
->supports_vCont
.t
= 1;
5342 else if (*p
== 'r' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
5343 rs
->supports_vCont
.r
= 1;
5345 p
= strchr (p
, ';');
5348 /* If c, and C are not all supported, we can't use vCont. Clearing
5349 BUF will make packet_ok disable the packet. */
5350 if (!support_c
|| !support_C
)
5354 packet_ok (buf
, &remote_protocol_packets
[PACKET_vCont
]);
5357 /* Helper function for building "vCont" resumptions. Write a
5358 resumption to P. ENDP points to one-passed-the-end of the buffer
5359 we're allowed to write to. Returns BUF+CHARACTERS_WRITTEN. The
5360 thread to be resumed is PTID; STEP and SIGGNAL indicate whether the
5361 resumed thread should be single-stepped and/or signalled. If PTID
5362 equals minus_one_ptid, then all threads are resumed; if PTID
5363 represents a process, then all threads of the process are resumed;
5364 the thread to be stepped and/or signalled is given in the global
5368 append_resumption (char *p
, char *endp
,
5369 ptid_t ptid
, int step
, enum gdb_signal siggnal
)
5371 struct remote_state
*rs
= get_remote_state ();
5373 if (step
&& siggnal
!= GDB_SIGNAL_0
)
5374 p
+= xsnprintf (p
, endp
- p
, ";S%02x", siggnal
);
5376 /* GDB is willing to range step. */
5377 && use_range_stepping
5378 /* Target supports range stepping. */
5379 && rs
->supports_vCont
.r
5380 /* We don't currently support range stepping multiple
5381 threads with a wildcard (though the protocol allows it,
5382 so stubs shouldn't make an active effort to forbid
5384 && !(remote_multi_process_p (rs
) && ptid_is_pid (ptid
)))
5386 struct thread_info
*tp
;
5388 if (ptid_equal (ptid
, minus_one_ptid
))
5390 /* If we don't know about the target thread's tid, then
5391 we're resuming magic_null_ptid (see caller). */
5392 tp
= find_thread_ptid (magic_null_ptid
);
5395 tp
= find_thread_ptid (ptid
);
5396 gdb_assert (tp
!= NULL
);
5398 if (tp
->control
.may_range_step
)
5400 int addr_size
= gdbarch_addr_bit (target_gdbarch ()) / 8;
5402 p
+= xsnprintf (p
, endp
- p
, ";r%s,%s",
5403 phex_nz (tp
->control
.step_range_start
,
5405 phex_nz (tp
->control
.step_range_end
,
5409 p
+= xsnprintf (p
, endp
- p
, ";s");
5412 p
+= xsnprintf (p
, endp
- p
, ";s");
5413 else if (siggnal
!= GDB_SIGNAL_0
)
5414 p
+= xsnprintf (p
, endp
- p
, ";C%02x", siggnal
);
5416 p
+= xsnprintf (p
, endp
- p
, ";c");
5418 if (remote_multi_process_p (rs
) && ptid_is_pid (ptid
))
5422 /* All (-1) threads of process. */
5423 nptid
= ptid_build (ptid_get_pid (ptid
), -1, 0);
5425 p
+= xsnprintf (p
, endp
- p
, ":");
5426 p
= write_ptid (p
, endp
, nptid
);
5428 else if (!ptid_equal (ptid
, minus_one_ptid
))
5430 p
+= xsnprintf (p
, endp
- p
, ":");
5431 p
= write_ptid (p
, endp
, ptid
);
5437 /* Clear the thread's private info on resume. */
5440 resume_clear_thread_private_info (struct thread_info
*thread
)
5442 if (thread
->priv
!= NULL
)
5444 thread
->priv
->stop_reason
= TARGET_STOPPED_BY_NO_REASON
;
5445 thread
->priv
->watch_data_address
= 0;
5449 /* Append a vCont continue-with-signal action for threads that have a
5450 non-zero stop signal. */
5453 append_pending_thread_resumptions (char *p
, char *endp
, ptid_t ptid
)
5455 struct thread_info
*thread
;
5457 ALL_NON_EXITED_THREADS (thread
)
5458 if (ptid_match (thread
->ptid
, ptid
)
5459 && !ptid_equal (inferior_ptid
, thread
->ptid
)
5460 && thread
->suspend
.stop_signal
!= GDB_SIGNAL_0
)
5462 p
= append_resumption (p
, endp
, thread
->ptid
,
5463 0, thread
->suspend
.stop_signal
);
5464 thread
->suspend
.stop_signal
= GDB_SIGNAL_0
;
5465 resume_clear_thread_private_info (thread
);
5471 /* Resume the remote inferior by using a "vCont" packet. The thread
5472 to be resumed is PTID; STEP and SIGGNAL indicate whether the
5473 resumed thread should be single-stepped and/or signalled. If PTID
5474 equals minus_one_ptid, then all threads are resumed; the thread to
5475 be stepped and/or signalled is given in the global INFERIOR_PTID.
5476 This function returns non-zero iff it resumes the inferior.
5478 This function issues a strict subset of all possible vCont commands at the
5482 remote_vcont_resume (ptid_t ptid
, int step
, enum gdb_signal siggnal
)
5484 struct remote_state
*rs
= get_remote_state ();
5488 if (packet_support (PACKET_vCont
) == PACKET_SUPPORT_UNKNOWN
)
5489 remote_vcont_probe (rs
);
5491 if (packet_support (PACKET_vCont
) == PACKET_DISABLE
)
5495 endp
= rs
->buf
+ get_remote_packet_size ();
5497 /* If we could generate a wider range of packets, we'd have to worry
5498 about overflowing BUF. Should there be a generic
5499 "multi-part-packet" packet? */
5501 p
+= xsnprintf (p
, endp
- p
, "vCont");
5503 if (ptid_equal (ptid
, magic_null_ptid
))
5505 /* MAGIC_NULL_PTID means that we don't have any active threads,
5506 so we don't have any TID numbers the inferior will
5507 understand. Make sure to only send forms that do not specify
5509 append_resumption (p
, endp
, minus_one_ptid
, step
, siggnal
);
5511 else if (ptid_equal (ptid
, minus_one_ptid
) || ptid_is_pid (ptid
))
5513 /* Resume all threads (of all processes, or of a single
5514 process), with preference for INFERIOR_PTID. This assumes
5515 inferior_ptid belongs to the set of all threads we are about
5517 if (step
|| siggnal
!= GDB_SIGNAL_0
)
5519 /* Step inferior_ptid, with or without signal. */
5520 p
= append_resumption (p
, endp
, inferior_ptid
, step
, siggnal
);
5523 /* Also pass down any pending signaled resumption for other
5524 threads not the current. */
5525 p
= append_pending_thread_resumptions (p
, endp
, ptid
);
5527 /* And continue others without a signal. */
5528 append_resumption (p
, endp
, ptid
, /*step=*/ 0, GDB_SIGNAL_0
);
5532 /* Scheduler locking; resume only PTID. */
5533 append_resumption (p
, endp
, ptid
, step
, siggnal
);
5536 gdb_assert (strlen (rs
->buf
) < get_remote_packet_size ());
5539 if (target_is_non_stop_p ())
5541 /* In non-stop, the stub replies to vCont with "OK". The stop
5542 reply will be reported asynchronously by means of a `%Stop'
5544 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5545 if (strcmp (rs
->buf
, "OK") != 0)
5546 error (_("Unexpected vCont reply in non-stop mode: %s"), rs
->buf
);
5552 /* Tell the remote machine to resume. */
5555 remote_resume (struct target_ops
*ops
,
5556 ptid_t ptid
, int step
, enum gdb_signal siggnal
)
5558 struct remote_state
*rs
= get_remote_state ();
5560 struct thread_info
*thread
;
5562 /* In all-stop, we can't mark REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN
5563 (explained in remote-notif.c:handle_notification) so
5564 remote_notif_process is not called. We need find a place where
5565 it is safe to start a 'vNotif' sequence. It is good to do it
5566 before resuming inferior, because inferior was stopped and no RSP
5567 traffic at that moment. */
5568 if (!target_is_non_stop_p ())
5569 remote_notif_process (rs
->notif_state
, ¬if_client_stop
);
5571 rs
->last_sent_signal
= siggnal
;
5572 rs
->last_sent_step
= step
;
5574 /* The vCont packet doesn't need to specify threads via Hc. */
5575 /* No reverse support (yet) for vCont. */
5576 if (execution_direction
!= EXEC_REVERSE
)
5577 if (remote_vcont_resume (ptid
, step
, siggnal
))
5580 /* All other supported resume packets do use Hc, so set the continue
5582 if (ptid_equal (ptid
, minus_one_ptid
))
5583 set_continue_thread (any_thread_ptid
);
5585 set_continue_thread (ptid
);
5587 ALL_NON_EXITED_THREADS (thread
)
5588 resume_clear_thread_private_info (thread
);
5591 if (execution_direction
== EXEC_REVERSE
)
5593 /* We don't pass signals to the target in reverse exec mode. */
5594 if (info_verbose
&& siggnal
!= GDB_SIGNAL_0
)
5595 warning (_(" - Can't pass signal %d to target in reverse: ignored."),
5598 if (step
&& packet_support (PACKET_bs
) == PACKET_DISABLE
)
5599 error (_("Remote reverse-step not supported."));
5600 if (!step
&& packet_support (PACKET_bc
) == PACKET_DISABLE
)
5601 error (_("Remote reverse-continue not supported."));
5603 strcpy (buf
, step
? "bs" : "bc");
5605 else if (siggnal
!= GDB_SIGNAL_0
)
5607 buf
[0] = step
? 'S' : 'C';
5608 buf
[1] = tohex (((int) siggnal
>> 4) & 0xf);
5609 buf
[2] = tohex (((int) siggnal
) & 0xf);
5613 strcpy (buf
, step
? "s" : "c");
5618 /* We are about to start executing the inferior, let's register it
5619 with the event loop. NOTE: this is the one place where all the
5620 execution commands end up. We could alternatively do this in each
5621 of the execution commands in infcmd.c. */
5622 /* FIXME: ezannoni 1999-09-28: We may need to move this out of here
5623 into infcmd.c in order to allow inferior function calls to work
5624 NOT asynchronously. */
5625 if (target_can_async_p ())
5628 /* We've just told the target to resume. The remote server will
5629 wait for the inferior to stop, and then send a stop reply. In
5630 the mean time, we can't start another command/query ourselves
5631 because the stub wouldn't be ready to process it. This applies
5632 only to the base all-stop protocol, however. In non-stop (which
5633 only supports vCont), the stub replies with an "OK", and is
5634 immediate able to process further serial input. */
5635 if (!target_is_non_stop_p ())
5636 rs
->waiting_for_stop_reply
= 1;
5640 /* Set up the signal handler for SIGINT, while the target is
5641 executing, ovewriting the 'regular' SIGINT signal handler. */
5643 async_initialize_sigint_signal_handler (void)
5645 signal (SIGINT
, async_handle_remote_sigint
);
5648 /* Signal handler for SIGINT, while the target is executing. */
5650 async_handle_remote_sigint (int sig
)
5652 signal (sig
, async_handle_remote_sigint_twice
);
5653 /* Note we need to go through gdb_call_async_signal_handler in order
5654 to wake up the event loop on Windows. */
5655 gdb_call_async_signal_handler (async_sigint_remote_token
, 0);
5658 /* Signal handler for SIGINT, installed after SIGINT has already been
5659 sent once. It will take effect the second time that the user sends
5662 async_handle_remote_sigint_twice (int sig
)
5664 signal (sig
, async_handle_remote_sigint
);
5665 /* See note in async_handle_remote_sigint. */
5666 gdb_call_async_signal_handler (async_sigint_remote_twice_token
, 0);
5669 /* Implementation of to_check_pending_interrupt. */
5672 remote_check_pending_interrupt (struct target_ops
*self
)
5674 struct async_signal_handler
*token
= async_sigint_remote_twice_token
;
5676 if (async_signal_handler_is_marked (token
))
5678 clear_async_signal_handler (token
);
5679 call_async_signal_handler (token
);
5683 /* Perform the real interruption of the target execution, in response
5686 async_remote_interrupt (gdb_client_data arg
)
5689 fprintf_unfiltered (gdb_stdlog
, "async_remote_interrupt called\n");
5691 target_interrupt (inferior_ptid
);
5694 /* Perform interrupt, if the first attempt did not succeed. Just give
5695 up on the target alltogether. */
5697 async_remote_interrupt_twice (gdb_client_data arg
)
5700 fprintf_unfiltered (gdb_stdlog
, "async_remote_interrupt_twice called\n");
5705 /* Reinstall the usual SIGINT handlers, after the target has
5708 async_cleanup_sigint_signal_handler (void *dummy
)
5710 signal (SIGINT
, handle_sigint
);
5713 /* Send ^C to target to halt it. Target will respond, and send us a
5715 static void (*ofunc
) (int);
5717 /* The command line interface's interrupt routine. This function is installed
5718 as a signal handler for SIGINT. The first time a user requests an
5719 interrupt, we call remote_interrupt to send a break or ^C. If there is no
5720 response from the target (it didn't stop when the user requested it),
5721 we ask the user if he'd like to detach from the target. */
5724 sync_remote_interrupt (int signo
)
5726 /* If this doesn't work, try more severe steps. */
5727 signal (signo
, sync_remote_interrupt_twice
);
5729 gdb_call_async_signal_handler (async_sigint_remote_token
, 1);
5732 /* The user typed ^C twice. */
5735 sync_remote_interrupt_twice (int signo
)
5737 signal (signo
, ofunc
);
5738 gdb_call_async_signal_handler (async_sigint_remote_twice_token
, 1);
5739 signal (signo
, sync_remote_interrupt
);
5742 /* Non-stop version of target_stop. Uses `vCont;t' to stop a remote
5743 thread, all threads of a remote process, or all threads of all
5747 remote_stop_ns (ptid_t ptid
)
5749 struct remote_state
*rs
= get_remote_state ();
5751 char *endp
= rs
->buf
+ get_remote_packet_size ();
5753 if (packet_support (PACKET_vCont
) == PACKET_SUPPORT_UNKNOWN
)
5754 remote_vcont_probe (rs
);
5756 if (!rs
->supports_vCont
.t
)
5757 error (_("Remote server does not support stopping threads"));
5759 if (ptid_equal (ptid
, minus_one_ptid
)
5760 || (!remote_multi_process_p (rs
) && ptid_is_pid (ptid
)))
5761 p
+= xsnprintf (p
, endp
- p
, "vCont;t");
5766 p
+= xsnprintf (p
, endp
- p
, "vCont;t:");
5768 if (ptid_is_pid (ptid
))
5769 /* All (-1) threads of process. */
5770 nptid
= ptid_build (ptid_get_pid (ptid
), -1, 0);
5773 /* Small optimization: if we already have a stop reply for
5774 this thread, no use in telling the stub we want this
5776 if (peek_stop_reply (ptid
))
5782 write_ptid (p
, endp
, nptid
);
5785 /* In non-stop, we get an immediate OK reply. The stop reply will
5786 come in asynchronously by notification. */
5788 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5789 if (strcmp (rs
->buf
, "OK") != 0)
5790 error (_("Stopping %s failed: %s"), target_pid_to_str (ptid
), rs
->buf
);
5793 /* All-stop version of target_interrupt. Sends a break or a ^C to
5794 interrupt the remote target. It is undefined which thread of which
5795 process reports the interrupt. */
5798 remote_interrupt_as (void)
5800 struct remote_state
*rs
= get_remote_state ();
5802 rs
->ctrlc_pending_p
= 1;
5804 /* If the inferior is stopped already, but the core didn't know
5805 about it yet, just ignore the request. The cached wait status
5806 will be collected in remote_wait. */
5807 if (rs
->cached_wait_status
)
5810 /* Send interrupt_sequence to remote target. */
5811 send_interrupt_sequence ();
5814 /* Non-stop version of target_interrupt. Uses `vCtrlC' to interrupt
5815 the remote target. It is undefined which thread of which process
5816 reports the interrupt. Returns true if the packet is supported by
5817 the server, false otherwise. */
5820 remote_interrupt_ns (void)
5822 struct remote_state
*rs
= get_remote_state ();
5824 char *endp
= rs
->buf
+ get_remote_packet_size ();
5826 xsnprintf (p
, endp
- p
, "vCtrlC");
5828 /* In non-stop, we get an immediate OK reply. The stop reply will
5829 come in asynchronously by notification. */
5831 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5833 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_vCtrlC
]))
5837 case PACKET_UNKNOWN
:
5840 error (_("Interrupting target failed: %s"), rs
->buf
);
5846 /* Implement the to_stop function for the remote targets. */
5849 remote_stop (struct target_ops
*self
, ptid_t ptid
)
5852 fprintf_unfiltered (gdb_stdlog
, "remote_stop called\n");
5854 if (target_is_non_stop_p ())
5855 remote_stop_ns (ptid
);
5858 /* We don't currently have a way to transparently pause the
5859 remote target in all-stop mode. Interrupt it instead. */
5860 remote_interrupt_as ();
5864 /* Implement the to_interrupt function for the remote targets. */
5867 remote_interrupt (struct target_ops
*self
, ptid_t ptid
)
5870 fprintf_unfiltered (gdb_stdlog
, "remote_interrupt called\n");
5874 /* In non-stop mode, we always stop with no signal instead. */
5875 remote_stop_ns (ptid
);
5879 /* In all-stop, we emulate ^C-ing the remote target's
5881 if (target_is_non_stop_p ())
5883 if (!remote_interrupt_ns ())
5885 /* No support for ^C-ing the remote target. Stop it
5886 (with no signal) instead. */
5887 remote_stop_ns (ptid
);
5891 remote_interrupt_as ();
5895 /* Ask the user what to do when an interrupt is received. */
5898 interrupt_query (void)
5900 struct remote_state
*rs
= get_remote_state ();
5901 struct cleanup
*old_chain
;
5903 old_chain
= make_cleanup_restore_target_terminal ();
5904 target_terminal_ours ();
5906 if (rs
->waiting_for_stop_reply
&& rs
->ctrlc_pending_p
)
5908 if (query (_("The target is not responding to interrupt requests.\n"
5909 "Stop debugging it? ")))
5911 remote_unpush_target ();
5912 throw_error (TARGET_CLOSE_ERROR
, _("Disconnected from target."));
5917 if (query (_("Interrupted while waiting for the program.\n"
5918 "Give up waiting? ")))
5922 do_cleanups (old_chain
);
5925 /* Enable/disable target terminal ownership. Most targets can use
5926 terminal groups to control terminal ownership. Remote targets are
5927 different in that explicit transfer of ownership to/from GDB/target
5931 remote_terminal_inferior (struct target_ops
*self
)
5933 if (!target_async_permitted
)
5934 /* Nothing to do. */
5937 /* FIXME: cagney/1999-09-27: Make calls to target_terminal_*()
5938 idempotent. The event-loop GDB talking to an asynchronous target
5939 with a synchronous command calls this function from both
5940 event-top.c and infrun.c/infcmd.c. Once GDB stops trying to
5941 transfer the terminal to the target when it shouldn't this guard
5943 if (!remote_async_terminal_ours_p
)
5945 delete_file_handler (input_fd
);
5946 remote_async_terminal_ours_p
= 0;
5947 async_initialize_sigint_signal_handler ();
5948 /* NOTE: At this point we could also register our selves as the
5949 recipient of all input. Any characters typed could then be
5950 passed on down to the target. */
5954 remote_terminal_ours (struct target_ops
*self
)
5956 if (!target_async_permitted
)
5957 /* Nothing to do. */
5960 /* See FIXME in remote_terminal_inferior. */
5961 if (remote_async_terminal_ours_p
)
5963 async_cleanup_sigint_signal_handler (NULL
);
5964 add_file_handler (input_fd
, stdin_event_handler
, 0);
5965 remote_async_terminal_ours_p
= 1;
5969 remote_console_output (char *msg
)
5973 for (p
= msg
; p
[0] && p
[1]; p
+= 2)
5976 char c
= fromhex (p
[0]) * 16 + fromhex (p
[1]);
5980 fputs_unfiltered (tb
, gdb_stdtarg
);
5982 gdb_flush (gdb_stdtarg
);
5985 typedef struct cached_reg
5988 gdb_byte data
[MAX_REGISTER_SIZE
];
5991 DEF_VEC_O(cached_reg_t
);
5993 typedef struct stop_reply
5995 struct notif_event base
;
5997 /* The identifier of the thread about this event */
6000 /* The remote state this event is associated with. When the remote
6001 connection, represented by a remote_state object, is closed,
6002 all the associated stop_reply events should be released. */
6003 struct remote_state
*rs
;
6005 struct target_waitstatus ws
;
6007 /* Expedited registers. This makes remote debugging a bit more
6008 efficient for those targets that provide critical registers as
6009 part of their normal status mechanism (as another roundtrip to
6010 fetch them is avoided). */
6011 VEC(cached_reg_t
) *regcache
;
6013 enum target_stop_reason stop_reason
;
6015 CORE_ADDR watch_data_address
;
6020 DECLARE_QUEUE_P (stop_reply_p
);
6021 DEFINE_QUEUE_P (stop_reply_p
);
6022 /* The list of already fetched and acknowledged stop events. This
6023 queue is used for notification Stop, and other notifications
6024 don't need queue for their events, because the notification events
6025 of Stop can't be consumed immediately, so that events should be
6026 queued first, and be consumed by remote_wait_{ns,as} one per
6027 time. Other notifications can consume their events immediately,
6028 so queue is not needed for them. */
6029 static QUEUE (stop_reply_p
) *stop_reply_queue
;
6032 stop_reply_xfree (struct stop_reply
*r
)
6034 notif_event_xfree ((struct notif_event
*) r
);
6037 /* Return the length of the stop reply queue. */
6040 stop_reply_queue_length (void)
6042 return QUEUE_length (stop_reply_p
, stop_reply_queue
);
6046 remote_notif_stop_parse (struct notif_client
*self
, char *buf
,
6047 struct notif_event
*event
)
6049 remote_parse_stop_reply (buf
, (struct stop_reply
*) event
);
6053 remote_notif_stop_ack (struct notif_client
*self
, char *buf
,
6054 struct notif_event
*event
)
6056 struct stop_reply
*stop_reply
= (struct stop_reply
*) event
;
6059 putpkt ((char *) self
->ack_command
);
6061 if (stop_reply
->ws
.kind
== TARGET_WAITKIND_IGNORE
)
6062 /* We got an unknown stop reply. */
6063 error (_("Unknown stop reply"));
6065 push_stop_reply (stop_reply
);
6069 remote_notif_stop_can_get_pending_events (struct notif_client
*self
)
6071 /* We can't get pending events in remote_notif_process for
6072 notification stop, and we have to do this in remote_wait_ns
6073 instead. If we fetch all queued events from stub, remote stub
6074 may exit and we have no chance to process them back in
6076 mark_async_event_handler (remote_async_inferior_event_token
);
6081 stop_reply_dtr (struct notif_event
*event
)
6083 struct stop_reply
*r
= (struct stop_reply
*) event
;
6085 VEC_free (cached_reg_t
, r
->regcache
);
6088 static struct notif_event
*
6089 remote_notif_stop_alloc_reply (void)
6091 /* We cast to a pointer to the "base class". */
6092 struct notif_event
*r
= (struct notif_event
*) XNEW (struct stop_reply
);
6094 r
->dtr
= stop_reply_dtr
;
6099 /* A client of notification Stop. */
6101 struct notif_client notif_client_stop
=
6105 remote_notif_stop_parse
,
6106 remote_notif_stop_ack
,
6107 remote_notif_stop_can_get_pending_events
,
6108 remote_notif_stop_alloc_reply
,
6112 /* A parameter to pass data in and out. */
6114 struct queue_iter_param
6117 struct stop_reply
*output
;
6120 /* Determine if THREAD is a pending fork parent thread. ARG contains
6121 the pid of the process that owns the threads we want to check, or
6122 -1 if we want to check all threads. */
6125 is_pending_fork_parent (struct target_waitstatus
*ws
, int event_pid
,
6128 if (ws
->kind
== TARGET_WAITKIND_FORKED
6129 || ws
->kind
== TARGET_WAITKIND_VFORKED
)
6131 if (event_pid
== -1 || event_pid
== ptid_get_pid (thread_ptid
))
6138 /* Check whether EVENT is a fork event, and if it is, remove the
6139 fork child from the context list passed in DATA. */
6142 remove_child_of_pending_fork (QUEUE (stop_reply_p
) *q
,
6143 QUEUE_ITER (stop_reply_p
) *iter
,
6147 struct queue_iter_param
*param
= (struct queue_iter_param
*) data
;
6148 struct threads_listing_context
*context
6149 = (struct threads_listing_context
*) param
->input
;
6151 if (event
->ws
.kind
== TARGET_WAITKIND_FORKED
6152 || event
->ws
.kind
== TARGET_WAITKIND_VFORKED
6153 || event
->ws
.kind
== TARGET_WAITKIND_THREAD_EXITED
)
6154 threads_listing_context_remove (&event
->ws
, context
);
6159 /* If CONTEXT contains any fork child threads that have not been
6160 reported yet, remove them from the CONTEXT list. If such a
6161 thread exists it is because we are stopped at a fork catchpoint
6162 and have not yet called follow_fork, which will set up the
6163 host-side data structures for the new process. */
6166 remove_new_fork_children (struct threads_listing_context
*context
)
6168 struct thread_info
* thread
;
6170 struct notif_client
*notif
= ¬if_client_stop
;
6171 struct queue_iter_param param
;
6173 /* For any threads stopped at a fork event, remove the corresponding
6174 fork child threads from the CONTEXT list. */
6175 ALL_NON_EXITED_THREADS (thread
)
6177 struct target_waitstatus
*ws
;
6179 if (thread
->suspend
.waitstatus_pending_p
)
6180 ws
= &thread
->suspend
.waitstatus
;
6182 ws
= &thread
->pending_follow
;
6184 if (is_pending_fork_parent (ws
, pid
, thread
->ptid
))
6186 threads_listing_context_remove (ws
, context
);
6190 /* Check for any pending fork events (not reported or processed yet)
6191 in process PID and remove those fork child threads from the
6192 CONTEXT list as well. */
6193 remote_notif_get_pending_events (notif
);
6194 param
.input
= context
;
6195 param
.output
= NULL
;
6196 QUEUE_iterate (stop_reply_p
, stop_reply_queue
,
6197 remove_child_of_pending_fork
, ¶m
);
6200 /* Remove stop replies in the queue if its pid is equal to the given
6204 remove_stop_reply_for_inferior (QUEUE (stop_reply_p
) *q
,
6205 QUEUE_ITER (stop_reply_p
) *iter
,
6209 struct queue_iter_param
*param
= (struct queue_iter_param
*) data
;
6210 struct inferior
*inf
= (struct inferior
*) param
->input
;
6212 if (ptid_get_pid (event
->ptid
) == inf
->pid
)
6214 stop_reply_xfree (event
);
6215 QUEUE_remove_elem (stop_reply_p
, q
, iter
);
6221 /* Discard all pending stop replies of inferior INF. */
6224 discard_pending_stop_replies (struct inferior
*inf
)
6226 struct queue_iter_param param
;
6227 struct stop_reply
*reply
;
6228 struct remote_state
*rs
= get_remote_state ();
6229 struct remote_notif_state
*rns
= rs
->notif_state
;
6231 /* This function can be notified when an inferior exists. When the
6232 target is not remote, the notification state is NULL. */
6233 if (rs
->remote_desc
== NULL
)
6236 reply
= (struct stop_reply
*) rns
->pending_event
[notif_client_stop
.id
];
6238 /* Discard the in-flight notification. */
6239 if (reply
!= NULL
&& ptid_get_pid (reply
->ptid
) == inf
->pid
)
6241 stop_reply_xfree (reply
);
6242 rns
->pending_event
[notif_client_stop
.id
] = NULL
;
6246 param
.output
= NULL
;
6247 /* Discard the stop replies we have already pulled with
6249 QUEUE_iterate (stop_reply_p
, stop_reply_queue
,
6250 remove_stop_reply_for_inferior
, ¶m
);
6253 /* If its remote state is equal to the given remote state,
6254 remove EVENT from the stop reply queue. */
6257 remove_stop_reply_of_remote_state (QUEUE (stop_reply_p
) *q
,
6258 QUEUE_ITER (stop_reply_p
) *iter
,
6262 struct queue_iter_param
*param
= (struct queue_iter_param
*) data
;
6263 struct remote_state
*rs
= (struct remote_state
*) param
->input
;
6265 if (event
->rs
== rs
)
6267 stop_reply_xfree (event
);
6268 QUEUE_remove_elem (stop_reply_p
, q
, iter
);
6274 /* Discard the stop replies for RS in stop_reply_queue. */
6277 discard_pending_stop_replies_in_queue (struct remote_state
*rs
)
6279 struct queue_iter_param param
;
6282 param
.output
= NULL
;
6283 /* Discard the stop replies we have already pulled with
6285 QUEUE_iterate (stop_reply_p
, stop_reply_queue
,
6286 remove_stop_reply_of_remote_state
, ¶m
);
6289 /* A parameter to pass data in and out. */
6292 remote_notif_remove_once_on_match (QUEUE (stop_reply_p
) *q
,
6293 QUEUE_ITER (stop_reply_p
) *iter
,
6297 struct queue_iter_param
*param
= (struct queue_iter_param
*) data
;
6298 ptid_t
*ptid
= (ptid_t
*) param
->input
;
6300 if (ptid_match (event
->ptid
, *ptid
))
6302 param
->output
= event
;
6303 QUEUE_remove_elem (stop_reply_p
, q
, iter
);
6310 /* Remove the first reply in 'stop_reply_queue' which matches
6313 static struct stop_reply
*
6314 remote_notif_remove_queued_reply (ptid_t ptid
)
6316 struct queue_iter_param param
;
6318 param
.input
= &ptid
;
6319 param
.output
= NULL
;
6321 QUEUE_iterate (stop_reply_p
, stop_reply_queue
,
6322 remote_notif_remove_once_on_match
, ¶m
);
6324 fprintf_unfiltered (gdb_stdlog
,
6325 "notif: discard queued event: 'Stop' in %s\n",
6326 target_pid_to_str (ptid
));
6328 return param
.output
;
6331 /* Look for a queued stop reply belonging to PTID. If one is found,
6332 remove it from the queue, and return it. Returns NULL if none is
6333 found. If there are still queued events left to process, tell the
6334 event loop to get back to target_wait soon. */
6336 static struct stop_reply
*
6337 queued_stop_reply (ptid_t ptid
)
6339 struct stop_reply
*r
= remote_notif_remove_queued_reply (ptid
);
6341 if (!QUEUE_is_empty (stop_reply_p
, stop_reply_queue
))
6342 /* There's still at least an event left. */
6343 mark_async_event_handler (remote_async_inferior_event_token
);
6348 /* Push a fully parsed stop reply in the stop reply queue. Since we
6349 know that we now have at least one queued event left to pass to the
6350 core side, tell the event loop to get back to target_wait soon. */
6353 push_stop_reply (struct stop_reply
*new_event
)
6355 QUEUE_enque (stop_reply_p
, stop_reply_queue
, new_event
);
6358 fprintf_unfiltered (gdb_stdlog
,
6359 "notif: push 'Stop' %s to queue %d\n",
6360 target_pid_to_str (new_event
->ptid
),
6361 QUEUE_length (stop_reply_p
,
6364 mark_async_event_handler (remote_async_inferior_event_token
);
6368 stop_reply_match_ptid_and_ws (QUEUE (stop_reply_p
) *q
,
6369 QUEUE_ITER (stop_reply_p
) *iter
,
6370 struct stop_reply
*event
,
6373 ptid_t
*ptid
= (ptid_t
*) data
;
6375 return !(ptid_equal (*ptid
, event
->ptid
)
6376 && event
->ws
.kind
== TARGET_WAITKIND_STOPPED
);
6379 /* Returns true if we have a stop reply for PTID. */
6382 peek_stop_reply (ptid_t ptid
)
6384 return !QUEUE_iterate (stop_reply_p
, stop_reply_queue
,
6385 stop_reply_match_ptid_and_ws
, &ptid
);
6388 /* Helper for remote_parse_stop_reply. Return nonzero if the substring
6389 starting with P and ending with PEND matches PREFIX. */
6392 strprefix (const char *p
, const char *pend
, const char *prefix
)
6394 for ( ; p
< pend
; p
++, prefix
++)
6397 return *prefix
== '\0';
6400 /* Parse the stop reply in BUF. Either the function succeeds, and the
6401 result is stored in EVENT, or throws an error. */
6404 remote_parse_stop_reply (char *buf
, struct stop_reply
*event
)
6406 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6411 event
->ptid
= null_ptid
;
6412 event
->rs
= get_remote_state ();
6413 event
->ws
.kind
= TARGET_WAITKIND_IGNORE
;
6414 event
->ws
.value
.integer
= 0;
6415 event
->stop_reason
= TARGET_STOPPED_BY_NO_REASON
;
6416 event
->regcache
= NULL
;
6421 case 'T': /* Status with PC, SP, FP, ... */
6422 /* Expedited reply, containing Signal, {regno, reg} repeat. */
6423 /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where
6425 n... = register number
6426 r... = register contents
6429 p
= &buf
[3]; /* after Txx */
6435 p1
= strchr (p
, ':');
6437 error (_("Malformed packet(a) (missing colon): %s\n\
6441 error (_("Malformed packet(a) (missing register number): %s\n\
6445 /* Some "registers" are actually extended stop information.
6446 Note if you're adding a new entry here: GDB 7.9 and
6447 earlier assume that all register "numbers" that start
6448 with an hex digit are real register numbers. Make sure
6449 the server only sends such a packet if it knows the
6450 client understands it. */
6452 if (strprefix (p
, p1
, "thread"))
6453 event
->ptid
= read_ptid (++p1
, &p
);
6454 else if (strprefix (p
, p1
, "syscall_entry"))
6458 event
->ws
.kind
= TARGET_WAITKIND_SYSCALL_ENTRY
;
6459 p
= unpack_varlen_hex (++p1
, &sysno
);
6460 event
->ws
.value
.syscall_number
= (int) sysno
;
6462 else if (strprefix (p
, p1
, "syscall_return"))
6466 event
->ws
.kind
= TARGET_WAITKIND_SYSCALL_RETURN
;
6467 p
= unpack_varlen_hex (++p1
, &sysno
);
6468 event
->ws
.value
.syscall_number
= (int) sysno
;
6470 else if (strprefix (p
, p1
, "watch")
6471 || strprefix (p
, p1
, "rwatch")
6472 || strprefix (p
, p1
, "awatch"))
6474 event
->stop_reason
= TARGET_STOPPED_BY_WATCHPOINT
;
6475 p
= unpack_varlen_hex (++p1
, &addr
);
6476 event
->watch_data_address
= (CORE_ADDR
) addr
;
6478 else if (strprefix (p
, p1
, "swbreak"))
6480 event
->stop_reason
= TARGET_STOPPED_BY_SW_BREAKPOINT
;
6482 /* Make sure the stub doesn't forget to indicate support
6484 if (packet_support (PACKET_swbreak_feature
) != PACKET_ENABLE
)
6485 error (_("Unexpected swbreak stop reason"));
6487 /* The value part is documented as "must be empty",
6488 though we ignore it, in case we ever decide to make
6489 use of it in a backward compatible way. */
6490 p
= strchrnul (p1
+ 1, ';');
6492 else if (strprefix (p
, p1
, "hwbreak"))
6494 event
->stop_reason
= TARGET_STOPPED_BY_HW_BREAKPOINT
;
6496 /* Make sure the stub doesn't forget to indicate support
6498 if (packet_support (PACKET_hwbreak_feature
) != PACKET_ENABLE
)
6499 error (_("Unexpected hwbreak stop reason"));
6502 p
= strchrnul (p1
+ 1, ';');
6504 else if (strprefix (p
, p1
, "library"))
6506 event
->ws
.kind
= TARGET_WAITKIND_LOADED
;
6507 p
= strchrnul (p1
+ 1, ';');
6509 else if (strprefix (p
, p1
, "replaylog"))
6511 event
->ws
.kind
= TARGET_WAITKIND_NO_HISTORY
;
6512 /* p1 will indicate "begin" or "end", but it makes
6513 no difference for now, so ignore it. */
6514 p
= strchrnul (p1
+ 1, ';');
6516 else if (strprefix (p
, p1
, "core"))
6520 p
= unpack_varlen_hex (++p1
, &c
);
6523 else if (strprefix (p
, p1
, "fork"))
6525 event
->ws
.value
.related_pid
= read_ptid (++p1
, &p
);
6526 event
->ws
.kind
= TARGET_WAITKIND_FORKED
;
6528 else if (strprefix (p
, p1
, "vfork"))
6530 event
->ws
.value
.related_pid
= read_ptid (++p1
, &p
);
6531 event
->ws
.kind
= TARGET_WAITKIND_VFORKED
;
6533 else if (strprefix (p
, p1
, "vforkdone"))
6535 event
->ws
.kind
= TARGET_WAITKIND_VFORK_DONE
;
6536 p
= strchrnul (p1
+ 1, ';');
6538 else if (strprefix (p
, p1
, "exec"))
6541 char pathname
[PATH_MAX
];
6544 /* Determine the length of the execd pathname. */
6545 p
= unpack_varlen_hex (++p1
, &ignored
);
6546 pathlen
= (p
- p1
) / 2;
6548 /* Save the pathname for event reporting and for
6549 the next run command. */
6550 hex2bin (p1
, (gdb_byte
*) pathname
, pathlen
);
6551 pathname
[pathlen
] = '\0';
6553 /* This is freed during event handling. */
6554 event
->ws
.value
.execd_pathname
= xstrdup (pathname
);
6555 event
->ws
.kind
= TARGET_WAITKIND_EXECD
;
6557 /* Skip the registers included in this packet, since
6558 they may be for an architecture different from the
6559 one used by the original program. */
6562 else if (strprefix (p
, p1
, "create"))
6564 event
->ws
.kind
= TARGET_WAITKIND_THREAD_CREATED
;
6565 p
= strchrnul (p1
+ 1, ';');
6574 p
= strchrnul (p1
+ 1, ';');
6579 /* Maybe a real ``P'' register number. */
6580 p_temp
= unpack_varlen_hex (p
, &pnum
);
6581 /* If the first invalid character is the colon, we got a
6582 register number. Otherwise, it's an unknown stop
6586 struct packet_reg
*reg
= packet_reg_from_pnum (rsa
, pnum
);
6587 cached_reg_t cached_reg
;
6590 error (_("Remote sent bad register number %s: %s\n\
6592 hex_string (pnum
), p
, buf
);
6594 cached_reg
.num
= reg
->regnum
;
6597 fieldsize
= hex2bin (p
, cached_reg
.data
,
6598 register_size (target_gdbarch (),
6601 if (fieldsize
< register_size (target_gdbarch (),
6603 warning (_("Remote reply is too short: %s"), buf
);
6605 VEC_safe_push (cached_reg_t
, event
->regcache
, &cached_reg
);
6609 /* Not a number. Silently skip unknown optional
6611 p
= strchrnul (p1
+ 1, ';');
6616 error (_("Remote register badly formatted: %s\nhere: %s"),
6621 if (event
->ws
.kind
!= TARGET_WAITKIND_IGNORE
)
6625 case 'S': /* Old style status, just signal only. */
6629 event
->ws
.kind
= TARGET_WAITKIND_STOPPED
;
6630 sig
= (fromhex (buf
[1]) << 4) + fromhex (buf
[2]);
6631 if (GDB_SIGNAL_FIRST
<= sig
&& sig
< GDB_SIGNAL_LAST
)
6632 event
->ws
.value
.sig
= (enum gdb_signal
) sig
;
6634 event
->ws
.value
.sig
= GDB_SIGNAL_UNKNOWN
;
6637 case 'w': /* Thread exited. */
6642 event
->ws
.kind
= TARGET_WAITKIND_THREAD_EXITED
;
6643 p
= unpack_varlen_hex (&buf
[1], &value
);
6644 event
->ws
.value
.integer
= value
;
6646 error (_("stop reply packet badly formatted: %s"), buf
);
6647 event
->ptid
= read_ptid (++p
, NULL
);
6650 case 'W': /* Target exited. */
6657 /* GDB used to accept only 2 hex chars here. Stubs should
6658 only send more if they detect GDB supports multi-process
6660 p
= unpack_varlen_hex (&buf
[1], &value
);
6664 /* The remote process exited. */
6665 event
->ws
.kind
= TARGET_WAITKIND_EXITED
;
6666 event
->ws
.value
.integer
= value
;
6670 /* The remote process exited with a signal. */
6671 event
->ws
.kind
= TARGET_WAITKIND_SIGNALLED
;
6672 if (GDB_SIGNAL_FIRST
<= value
&& value
< GDB_SIGNAL_LAST
)
6673 event
->ws
.value
.sig
= (enum gdb_signal
) value
;
6675 event
->ws
.value
.sig
= GDB_SIGNAL_UNKNOWN
;
6678 /* If no process is specified, assume inferior_ptid. */
6679 pid
= ptid_get_pid (inferior_ptid
);
6688 else if (startswith (p
, "process:"))
6692 p
+= sizeof ("process:") - 1;
6693 unpack_varlen_hex (p
, &upid
);
6697 error (_("unknown stop reply packet: %s"), buf
);
6700 error (_("unknown stop reply packet: %s"), buf
);
6701 event
->ptid
= pid_to_ptid (pid
);
6705 event
->ws
.kind
= TARGET_WAITKIND_NO_RESUMED
;
6706 event
->ptid
= minus_one_ptid
;
6710 if (target_is_non_stop_p () && ptid_equal (event
->ptid
, null_ptid
))
6711 error (_("No process or thread specified in stop reply: %s"), buf
);
6714 /* When the stub wants to tell GDB about a new notification reply, it
6715 sends a notification (%Stop, for example). Those can come it at
6716 any time, hence, we have to make sure that any pending
6717 putpkt/getpkt sequence we're making is finished, before querying
6718 the stub for more events with the corresponding ack command
6719 (vStopped, for example). E.g., if we started a vStopped sequence
6720 immediately upon receiving the notification, something like this
6728 1.6) <-- (registers reply to step #1.3)
6730 Obviously, the reply in step #1.6 would be unexpected to a vStopped
6733 To solve this, whenever we parse a %Stop notification successfully,
6734 we mark the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN, and carry on
6735 doing whatever we were doing:
6741 <GDB marks the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN>
6742 2.5) <-- (registers reply to step #2.3)
6744 Eventualy after step #2.5, we return to the event loop, which
6745 notices there's an event on the
6746 REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN event and calls the
6747 associated callback --- the function below. At this point, we're
6748 always safe to start a vStopped sequence. :
6751 2.7) <-- T05 thread:2
6757 remote_notif_get_pending_events (struct notif_client
*nc
)
6759 struct remote_state
*rs
= get_remote_state ();
6761 if (rs
->notif_state
->pending_event
[nc
->id
] != NULL
)
6764 fprintf_unfiltered (gdb_stdlog
,
6765 "notif: process: '%s' ack pending event\n",
6769 nc
->ack (nc
, rs
->buf
, rs
->notif_state
->pending_event
[nc
->id
]);
6770 rs
->notif_state
->pending_event
[nc
->id
] = NULL
;
6774 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6775 if (strcmp (rs
->buf
, "OK") == 0)
6778 remote_notif_ack (nc
, rs
->buf
);
6784 fprintf_unfiltered (gdb_stdlog
,
6785 "notif: process: '%s' no pending reply\n",
6790 /* Called when it is decided that STOP_REPLY holds the info of the
6791 event that is to be returned to the core. This function always
6792 destroys STOP_REPLY. */
6795 process_stop_reply (struct stop_reply
*stop_reply
,
6796 struct target_waitstatus
*status
)
6800 *status
= stop_reply
->ws
;
6801 ptid
= stop_reply
->ptid
;
6803 /* If no thread/process was reported by the stub, assume the current
6805 if (ptid_equal (ptid
, null_ptid
))
6806 ptid
= inferior_ptid
;
6808 if (status
->kind
!= TARGET_WAITKIND_EXITED
6809 && status
->kind
!= TARGET_WAITKIND_SIGNALLED
6810 && status
->kind
!= TARGET_WAITKIND_NO_RESUMED
)
6812 struct private_thread_info
*remote_thr
;
6814 /* Expedited registers. */
6815 if (stop_reply
->regcache
)
6817 struct regcache
*regcache
6818 = get_thread_arch_regcache (ptid
, target_gdbarch ());
6823 VEC_iterate(cached_reg_t
, stop_reply
->regcache
, ix
, reg
);
6825 regcache_raw_supply (regcache
, reg
->num
, reg
->data
);
6826 VEC_free (cached_reg_t
, stop_reply
->regcache
);
6829 remote_notice_new_inferior (ptid
, 0);
6830 remote_thr
= demand_private_info (ptid
);
6831 remote_thr
->core
= stop_reply
->core
;
6832 remote_thr
->stop_reason
= stop_reply
->stop_reason
;
6833 remote_thr
->watch_data_address
= stop_reply
->watch_data_address
;
6836 stop_reply_xfree (stop_reply
);
6840 /* The non-stop mode version of target_wait. */
6843 remote_wait_ns (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
6845 struct remote_state
*rs
= get_remote_state ();
6846 struct stop_reply
*stop_reply
;
6850 /* If in non-stop mode, get out of getpkt even if a
6851 notification is received. */
6853 ret
= getpkt_or_notif_sane (&rs
->buf
, &rs
->buf_size
,
6854 0 /* forever */, &is_notif
);
6857 if (ret
!= -1 && !is_notif
)
6860 case 'E': /* Error of some sort. */
6861 /* We're out of sync with the target now. Did it continue
6862 or not? We can't tell which thread it was in non-stop,
6863 so just ignore this. */
6864 warning (_("Remote failure reply: %s"), rs
->buf
);
6866 case 'O': /* Console output. */
6867 remote_console_output (rs
->buf
+ 1);
6870 warning (_("Invalid remote reply: %s"), rs
->buf
);
6874 /* Acknowledge a pending stop reply that may have arrived in the
6876 if (rs
->notif_state
->pending_event
[notif_client_stop
.id
] != NULL
)
6877 remote_notif_get_pending_events (¬if_client_stop
);
6879 /* If indeed we noticed a stop reply, we're done. */
6880 stop_reply
= queued_stop_reply (ptid
);
6881 if (stop_reply
!= NULL
)
6882 return process_stop_reply (stop_reply
, status
);
6884 /* Still no event. If we're just polling for an event, then
6885 return to the event loop. */
6886 if (options
& TARGET_WNOHANG
)
6888 status
->kind
= TARGET_WAITKIND_IGNORE
;
6889 return minus_one_ptid
;
6892 /* Otherwise do a blocking wait. */
6893 ret
= getpkt_or_notif_sane (&rs
->buf
, &rs
->buf_size
,
6894 1 /* forever */, &is_notif
);
6898 /* Wait until the remote machine stops, then return, storing status in
6899 STATUS just as `wait' would. */
6902 remote_wait_as (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
6904 struct remote_state
*rs
= get_remote_state ();
6905 ptid_t event_ptid
= null_ptid
;
6907 struct stop_reply
*stop_reply
;
6911 status
->kind
= TARGET_WAITKIND_IGNORE
;
6912 status
->value
.integer
= 0;
6914 stop_reply
= queued_stop_reply (ptid
);
6915 if (stop_reply
!= NULL
)
6916 return process_stop_reply (stop_reply
, status
);
6918 if (rs
->cached_wait_status
)
6919 /* Use the cached wait status, but only once. */
6920 rs
->cached_wait_status
= 0;
6925 int forever
= ((options
& TARGET_WNOHANG
) == 0
6926 && wait_forever_enabled_p
);
6928 if (!rs
->waiting_for_stop_reply
)
6930 status
->kind
= TARGET_WAITKIND_NO_RESUMED
;
6931 return minus_one_ptid
;
6934 if (!target_is_async_p ())
6936 ofunc
= signal (SIGINT
, sync_remote_interrupt
);
6937 /* If the user hit C-c before this packet, or between packets,
6938 pretend that it was hit right here. */
6939 if (check_quit_flag ())
6942 sync_remote_interrupt (SIGINT
);
6946 /* FIXME: cagney/1999-09-27: If we're in async mode we should
6947 _never_ wait for ever -> test on target_is_async_p().
6948 However, before we do that we need to ensure that the caller
6949 knows how to take the target into/out of async mode. */
6950 ret
= getpkt_or_notif_sane (&rs
->buf
, &rs
->buf_size
,
6951 forever
, &is_notif
);
6953 if (!target_is_async_p ())
6954 signal (SIGINT
, ofunc
);
6956 /* GDB gets a notification. Return to core as this event is
6958 if (ret
!= -1 && is_notif
)
6959 return minus_one_ptid
;
6961 if (ret
== -1 && (options
& TARGET_WNOHANG
) != 0)
6962 return minus_one_ptid
;
6967 /* Assume that the target has acknowledged Ctrl-C unless we receive
6968 an 'F' or 'O' packet. */
6969 if (buf
[0] != 'F' && buf
[0] != 'O')
6970 rs
->ctrlc_pending_p
= 0;
6974 case 'E': /* Error of some sort. */
6975 /* We're out of sync with the target now. Did it continue or
6976 not? Not is more likely, so report a stop. */
6977 rs
->waiting_for_stop_reply
= 0;
6979 warning (_("Remote failure reply: %s"), buf
);
6980 status
->kind
= TARGET_WAITKIND_STOPPED
;
6981 status
->value
.sig
= GDB_SIGNAL_0
;
6983 case 'F': /* File-I/O request. */
6984 /* GDB may access the inferior memory while handling the File-I/O
6985 request, but we don't want GDB accessing memory while waiting
6986 for a stop reply. See the comments in putpkt_binary. Set
6987 waiting_for_stop_reply to 0 temporarily. */
6988 rs
->waiting_for_stop_reply
= 0;
6989 remote_fileio_request (buf
, rs
->ctrlc_pending_p
);
6990 rs
->ctrlc_pending_p
= 0;
6991 /* GDB handled the File-I/O request, and the target is running
6992 again. Keep waiting for events. */
6993 rs
->waiting_for_stop_reply
= 1;
6995 case 'N': case 'T': case 'S': case 'X': case 'W':
6997 struct stop_reply
*stop_reply
;
6999 /* There is a stop reply to handle. */
7000 rs
->waiting_for_stop_reply
= 0;
7003 = (struct stop_reply
*) remote_notif_parse (¬if_client_stop
,
7006 event_ptid
= process_stop_reply (stop_reply
, status
);
7009 case 'O': /* Console output. */
7010 remote_console_output (buf
+ 1);
7013 if (rs
->last_sent_signal
!= GDB_SIGNAL_0
)
7015 /* Zero length reply means that we tried 'S' or 'C' and the
7016 remote system doesn't support it. */
7017 target_terminal_ours_for_output ();
7019 ("Can't send signals to this remote system. %s not sent.\n",
7020 gdb_signal_to_name (rs
->last_sent_signal
));
7021 rs
->last_sent_signal
= GDB_SIGNAL_0
;
7022 target_terminal_inferior ();
7024 strcpy ((char *) buf
, rs
->last_sent_step
? "s" : "c");
7025 putpkt ((char *) buf
);
7028 /* else fallthrough */
7030 warning (_("Invalid remote reply: %s"), buf
);
7034 if (status
->kind
== TARGET_WAITKIND_NO_RESUMED
)
7035 return minus_one_ptid
;
7036 else if (status
->kind
== TARGET_WAITKIND_IGNORE
)
7038 /* Nothing interesting happened. If we're doing a non-blocking
7039 poll, we're done. Otherwise, go back to waiting. */
7040 if (options
& TARGET_WNOHANG
)
7041 return minus_one_ptid
;
7045 else if (status
->kind
!= TARGET_WAITKIND_EXITED
7046 && status
->kind
!= TARGET_WAITKIND_SIGNALLED
)
7048 if (!ptid_equal (event_ptid
, null_ptid
))
7049 record_currthread (rs
, event_ptid
);
7051 event_ptid
= inferior_ptid
;
7054 /* A process exit. Invalidate our notion of current thread. */
7055 record_currthread (rs
, minus_one_ptid
);
7060 /* Wait until the remote machine stops, then return, storing status in
7061 STATUS just as `wait' would. */
7064 remote_wait (struct target_ops
*ops
,
7065 ptid_t ptid
, struct target_waitstatus
*status
, int options
)
7069 if (target_is_non_stop_p ())
7070 event_ptid
= remote_wait_ns (ptid
, status
, options
);
7072 event_ptid
= remote_wait_as (ptid
, status
, options
);
7074 if (target_is_async_p ())
7076 /* If there are are events left in the queue tell the event loop
7078 if (!QUEUE_is_empty (stop_reply_p
, stop_reply_queue
))
7079 mark_async_event_handler (remote_async_inferior_event_token
);
7085 /* Fetch a single register using a 'p' packet. */
7088 fetch_register_using_p (struct regcache
*regcache
, struct packet_reg
*reg
)
7090 struct remote_state
*rs
= get_remote_state ();
7092 char regp
[MAX_REGISTER_SIZE
];
7095 if (packet_support (PACKET_p
) == PACKET_DISABLE
)
7098 if (reg
->pnum
== -1)
7103 p
+= hexnumstr (p
, reg
->pnum
);
7106 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7110 switch (packet_ok (buf
, &remote_protocol_packets
[PACKET_p
]))
7114 case PACKET_UNKNOWN
:
7117 error (_("Could not fetch register \"%s\"; remote failure reply '%s'"),
7118 gdbarch_register_name (get_regcache_arch (regcache
),
7123 /* If this register is unfetchable, tell the regcache. */
7126 regcache_raw_supply (regcache
, reg
->regnum
, NULL
);
7130 /* Otherwise, parse and supply the value. */
7136 error (_("fetch_register_using_p: early buf termination"));
7138 regp
[i
++] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
7141 regcache_raw_supply (regcache
, reg
->regnum
, regp
);
7145 /* Fetch the registers included in the target's 'g' packet. */
7148 send_g_packet (void)
7150 struct remote_state
*rs
= get_remote_state ();
7153 xsnprintf (rs
->buf
, get_remote_packet_size (), "g");
7154 remote_send (&rs
->buf
, &rs
->buf_size
);
7156 /* We can get out of synch in various cases. If the first character
7157 in the buffer is not a hex character, assume that has happened
7158 and try to fetch another packet to read. */
7159 while ((rs
->buf
[0] < '0' || rs
->buf
[0] > '9')
7160 && (rs
->buf
[0] < 'A' || rs
->buf
[0] > 'F')
7161 && (rs
->buf
[0] < 'a' || rs
->buf
[0] > 'f')
7162 && rs
->buf
[0] != 'x') /* New: unavailable register value. */
7165 fprintf_unfiltered (gdb_stdlog
,
7166 "Bad register packet; fetching a new packet\n");
7167 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7170 buf_len
= strlen (rs
->buf
);
7172 /* Sanity check the received packet. */
7173 if (buf_len
% 2 != 0)
7174 error (_("Remote 'g' packet reply is of odd length: %s"), rs
->buf
);
7180 process_g_packet (struct regcache
*regcache
)
7182 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
7183 struct remote_state
*rs
= get_remote_state ();
7184 struct remote_arch_state
*rsa
= get_remote_arch_state ();
7189 buf_len
= strlen (rs
->buf
);
7191 /* Further sanity checks, with knowledge of the architecture. */
7192 if (buf_len
> 2 * rsa
->sizeof_g_packet
)
7193 error (_("Remote 'g' packet reply is too long: %s"), rs
->buf
);
7195 /* Save the size of the packet sent to us by the target. It is used
7196 as a heuristic when determining the max size of packets that the
7197 target can safely receive. */
7198 if (rsa
->actual_register_packet_size
== 0)
7199 rsa
->actual_register_packet_size
= buf_len
;
7201 /* If this is smaller than we guessed the 'g' packet would be,
7202 update our records. A 'g' reply that doesn't include a register's
7203 value implies either that the register is not available, or that
7204 the 'p' packet must be used. */
7205 if (buf_len
< 2 * rsa
->sizeof_g_packet
)
7207 rsa
->sizeof_g_packet
= buf_len
/ 2;
7209 for (i
= 0; i
< gdbarch_num_regs (gdbarch
); i
++)
7211 if (rsa
->regs
[i
].pnum
== -1)
7214 if (rsa
->regs
[i
].offset
>= rsa
->sizeof_g_packet
)
7215 rsa
->regs
[i
].in_g_packet
= 0;
7217 rsa
->regs
[i
].in_g_packet
= 1;
7221 regs
= (char *) alloca (rsa
->sizeof_g_packet
);
7223 /* Unimplemented registers read as all bits zero. */
7224 memset (regs
, 0, rsa
->sizeof_g_packet
);
7226 /* Reply describes registers byte by byte, each byte encoded as two
7227 hex characters. Suck them all up, then supply them to the
7228 register cacheing/storage mechanism. */
7231 for (i
= 0; i
< rsa
->sizeof_g_packet
; i
++)
7233 if (p
[0] == 0 || p
[1] == 0)
7234 /* This shouldn't happen - we adjusted sizeof_g_packet above. */
7235 internal_error (__FILE__
, __LINE__
,
7236 _("unexpected end of 'g' packet reply"));
7238 if (p
[0] == 'x' && p
[1] == 'x')
7239 regs
[i
] = 0; /* 'x' */
7241 regs
[i
] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
7245 for (i
= 0; i
< gdbarch_num_regs (gdbarch
); i
++)
7247 struct packet_reg
*r
= &rsa
->regs
[i
];
7251 if (r
->offset
* 2 >= strlen (rs
->buf
))
7252 /* This shouldn't happen - we adjusted in_g_packet above. */
7253 internal_error (__FILE__
, __LINE__
,
7254 _("unexpected end of 'g' packet reply"));
7255 else if (rs
->buf
[r
->offset
* 2] == 'x')
7257 gdb_assert (r
->offset
* 2 < strlen (rs
->buf
));
7258 /* The register isn't available, mark it as such (at
7259 the same time setting the value to zero). */
7260 regcache_raw_supply (regcache
, r
->regnum
, NULL
);
7263 regcache_raw_supply (regcache
, r
->regnum
,
7270 fetch_registers_using_g (struct regcache
*regcache
)
7273 process_g_packet (regcache
);
7276 /* Make the remote selected traceframe match GDB's selected
7280 set_remote_traceframe (void)
7283 struct remote_state
*rs
= get_remote_state ();
7285 if (rs
->remote_traceframe_number
== get_traceframe_number ())
7288 /* Avoid recursion, remote_trace_find calls us again. */
7289 rs
->remote_traceframe_number
= get_traceframe_number ();
7291 newnum
= target_trace_find (tfind_number
,
7292 get_traceframe_number (), 0, 0, NULL
);
7294 /* Should not happen. If it does, all bets are off. */
7295 if (newnum
!= get_traceframe_number ())
7296 warning (_("could not set remote traceframe"));
7300 remote_fetch_registers (struct target_ops
*ops
,
7301 struct regcache
*regcache
, int regnum
)
7303 struct remote_arch_state
*rsa
= get_remote_arch_state ();
7306 set_remote_traceframe ();
7307 set_general_thread (inferior_ptid
);
7311 struct packet_reg
*reg
= packet_reg_from_regnum (rsa
, regnum
);
7313 gdb_assert (reg
!= NULL
);
7315 /* If this register might be in the 'g' packet, try that first -
7316 we are likely to read more than one register. If this is the
7317 first 'g' packet, we might be overly optimistic about its
7318 contents, so fall back to 'p'. */
7319 if (reg
->in_g_packet
)
7321 fetch_registers_using_g (regcache
);
7322 if (reg
->in_g_packet
)
7326 if (fetch_register_using_p (regcache
, reg
))
7329 /* This register is not available. */
7330 regcache_raw_supply (regcache
, reg
->regnum
, NULL
);
7335 fetch_registers_using_g (regcache
);
7337 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
7338 if (!rsa
->regs
[i
].in_g_packet
)
7339 if (!fetch_register_using_p (regcache
, &rsa
->regs
[i
]))
7341 /* This register is not available. */
7342 regcache_raw_supply (regcache
, i
, NULL
);
7346 /* Prepare to store registers. Since we may send them all (using a
7347 'G' request), we have to read out the ones we don't want to change
7351 remote_prepare_to_store (struct target_ops
*self
, struct regcache
*regcache
)
7353 struct remote_arch_state
*rsa
= get_remote_arch_state ();
7355 gdb_byte buf
[MAX_REGISTER_SIZE
];
7357 /* Make sure the entire registers array is valid. */
7358 switch (packet_support (PACKET_P
))
7360 case PACKET_DISABLE
:
7361 case PACKET_SUPPORT_UNKNOWN
:
7362 /* Make sure all the necessary registers are cached. */
7363 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
7364 if (rsa
->regs
[i
].in_g_packet
)
7365 regcache_raw_read (regcache
, rsa
->regs
[i
].regnum
, buf
);
7372 /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF
7373 packet was not recognized. */
7376 store_register_using_P (const struct regcache
*regcache
,
7377 struct packet_reg
*reg
)
7379 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
7380 struct remote_state
*rs
= get_remote_state ();
7381 /* Try storing a single register. */
7382 char *buf
= rs
->buf
;
7383 gdb_byte regp
[MAX_REGISTER_SIZE
];
7386 if (packet_support (PACKET_P
) == PACKET_DISABLE
)
7389 if (reg
->pnum
== -1)
7392 xsnprintf (buf
, get_remote_packet_size (), "P%s=", phex_nz (reg
->pnum
, 0));
7393 p
= buf
+ strlen (buf
);
7394 regcache_raw_collect (regcache
, reg
->regnum
, regp
);
7395 bin2hex (regp
, p
, register_size (gdbarch
, reg
->regnum
));
7397 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7399 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_P
]))
7404 error (_("Could not write register \"%s\"; remote failure reply '%s'"),
7405 gdbarch_register_name (gdbarch
, reg
->regnum
), rs
->buf
);
7406 case PACKET_UNKNOWN
:
7409 internal_error (__FILE__
, __LINE__
, _("Bad result from packet_ok"));
7413 /* Store register REGNUM, or all registers if REGNUM == -1, from the
7414 contents of the register cache buffer. FIXME: ignores errors. */
7417 store_registers_using_G (const struct regcache
*regcache
)
7419 struct remote_state
*rs
= get_remote_state ();
7420 struct remote_arch_state
*rsa
= get_remote_arch_state ();
7424 /* Extract all the registers in the regcache copying them into a
7429 regs
= (gdb_byte
*) alloca (rsa
->sizeof_g_packet
);
7430 memset (regs
, 0, rsa
->sizeof_g_packet
);
7431 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
7433 struct packet_reg
*r
= &rsa
->regs
[i
];
7436 regcache_raw_collect (regcache
, r
->regnum
, regs
+ r
->offset
);
7440 /* Command describes registers byte by byte,
7441 each byte encoded as two hex characters. */
7444 /* remote_prepare_to_store insures that rsa->sizeof_g_packet gets
7446 bin2hex (regs
, p
, rsa
->sizeof_g_packet
);
7448 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7449 if (packet_check_result (rs
->buf
) == PACKET_ERROR
)
7450 error (_("Could not write registers; remote failure reply '%s'"),
7454 /* Store register REGNUM, or all registers if REGNUM == -1, from the contents
7455 of the register cache buffer. FIXME: ignores errors. */
7458 remote_store_registers (struct target_ops
*ops
,
7459 struct regcache
*regcache
, int regnum
)
7461 struct remote_arch_state
*rsa
= get_remote_arch_state ();
7464 set_remote_traceframe ();
7465 set_general_thread (inferior_ptid
);
7469 struct packet_reg
*reg
= packet_reg_from_regnum (rsa
, regnum
);
7471 gdb_assert (reg
!= NULL
);
7473 /* Always prefer to store registers using the 'P' packet if
7474 possible; we often change only a small number of registers.
7475 Sometimes we change a larger number; we'd need help from a
7476 higher layer to know to use 'G'. */
7477 if (store_register_using_P (regcache
, reg
))
7480 /* For now, don't complain if we have no way to write the
7481 register. GDB loses track of unavailable registers too
7482 easily. Some day, this may be an error. We don't have
7483 any way to read the register, either... */
7484 if (!reg
->in_g_packet
)
7487 store_registers_using_G (regcache
);
7491 store_registers_using_G (regcache
);
7493 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
7494 if (!rsa
->regs
[i
].in_g_packet
)
7495 if (!store_register_using_P (regcache
, &rsa
->regs
[i
]))
7496 /* See above for why we do not issue an error here. */
7501 /* Return the number of hex digits in num. */
7504 hexnumlen (ULONGEST num
)
7508 for (i
= 0; num
!= 0; i
++)
7514 /* Set BUF to the minimum number of hex digits representing NUM. */
7517 hexnumstr (char *buf
, ULONGEST num
)
7519 int len
= hexnumlen (num
);
7521 return hexnumnstr (buf
, num
, len
);
7525 /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */
7528 hexnumnstr (char *buf
, ULONGEST num
, int width
)
7534 for (i
= width
- 1; i
>= 0; i
--)
7536 buf
[i
] = "0123456789abcdef"[(num
& 0xf)];
7543 /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */
7546 remote_address_masked (CORE_ADDR addr
)
7548 unsigned int address_size
= remote_address_size
;
7550 /* If "remoteaddresssize" was not set, default to target address size. */
7552 address_size
= gdbarch_addr_bit (target_gdbarch ());
7554 if (address_size
> 0
7555 && address_size
< (sizeof (ULONGEST
) * 8))
7557 /* Only create a mask when that mask can safely be constructed
7558 in a ULONGEST variable. */
7561 mask
= (mask
<< address_size
) - 1;
7567 /* Determine whether the remote target supports binary downloading.
7568 This is accomplished by sending a no-op memory write of zero length
7569 to the target at the specified address. It does not suffice to send
7570 the whole packet, since many stubs strip the eighth bit and
7571 subsequently compute a wrong checksum, which causes real havoc with
7574 NOTE: This can still lose if the serial line is not eight-bit
7575 clean. In cases like this, the user should clear "remote
7579 check_binary_download (CORE_ADDR addr
)
7581 struct remote_state
*rs
= get_remote_state ();
7583 switch (packet_support (PACKET_X
))
7585 case PACKET_DISABLE
:
7589 case PACKET_SUPPORT_UNKNOWN
:
7595 p
+= hexnumstr (p
, (ULONGEST
) addr
);
7597 p
+= hexnumstr (p
, (ULONGEST
) 0);
7601 putpkt_binary (rs
->buf
, (int) (p
- rs
->buf
));
7602 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7604 if (rs
->buf
[0] == '\0')
7607 fprintf_unfiltered (gdb_stdlog
,
7608 "binary downloading NOT "
7609 "supported by target\n");
7610 remote_protocol_packets
[PACKET_X
].support
= PACKET_DISABLE
;
7615 fprintf_unfiltered (gdb_stdlog
,
7616 "binary downloading supported by target\n");
7617 remote_protocol_packets
[PACKET_X
].support
= PACKET_ENABLE
;
7624 /* Helper function to resize the payload in order to try to get a good
7625 alignment. We try to write an amount of data such that the next write will
7626 start on an address aligned on REMOTE_ALIGN_WRITES. */
7629 align_for_efficient_write (int todo
, CORE_ADDR memaddr
)
7631 return ((memaddr
+ todo
) & ~(REMOTE_ALIGN_WRITES
- 1)) - memaddr
;
7634 /* Write memory data directly to the remote machine.
7635 This does not inform the data cache; the data cache uses this.
7636 HEADER is the starting part of the packet.
7637 MEMADDR is the address in the remote memory space.
7638 MYADDR is the address of the buffer in our space.
7639 LEN_UNITS is the number of addressable units to write.
7640 UNIT_SIZE is the length in bytes of an addressable unit.
7641 PACKET_FORMAT should be either 'X' or 'M', and indicates if we
7642 should send data as binary ('X'), or hex-encoded ('M').
7644 The function creates packet of the form
7645 <HEADER><ADDRESS>,<LENGTH>:<DATA>
7647 where encoding of <DATA> is terminated by PACKET_FORMAT.
7649 If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma
7652 Return the transferred status, error or OK (an
7653 'enum target_xfer_status' value). Save the number of addressable units
7654 transferred in *XFERED_LEN_UNITS. Only transfer a single packet.
7656 On a platform with an addressable memory size of 2 bytes (UNIT_SIZE == 2), an
7657 exchange between gdb and the stub could look like (?? in place of the
7663 -> $M1000,3:eeeeffffeeee#??
7667 <- eeeeffffeeeedddd */
7669 static enum target_xfer_status
7670 remote_write_bytes_aux (const char *header
, CORE_ADDR memaddr
,
7671 const gdb_byte
*myaddr
, ULONGEST len_units
,
7672 int unit_size
, ULONGEST
*xfered_len_units
,
7673 char packet_format
, int use_length
)
7675 struct remote_state
*rs
= get_remote_state ();
7681 int payload_capacity_bytes
;
7682 int payload_length_bytes
;
7684 if (packet_format
!= 'X' && packet_format
!= 'M')
7685 internal_error (__FILE__
, __LINE__
,
7686 _("remote_write_bytes_aux: bad packet format"));
7689 return TARGET_XFER_EOF
;
7691 payload_capacity_bytes
= get_memory_write_packet_size ();
7693 /* The packet buffer will be large enough for the payload;
7694 get_memory_packet_size ensures this. */
7697 /* Compute the size of the actual payload by subtracting out the
7698 packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */
7700 payload_capacity_bytes
-= strlen ("$,:#NN");
7702 /* The comma won't be used. */
7703 payload_capacity_bytes
+= 1;
7704 payload_capacity_bytes
-= strlen (header
);
7705 payload_capacity_bytes
-= hexnumlen (memaddr
);
7707 /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */
7709 strcat (rs
->buf
, header
);
7710 p
= rs
->buf
+ strlen (header
);
7712 /* Compute a best guess of the number of bytes actually transfered. */
7713 if (packet_format
== 'X')
7715 /* Best guess at number of bytes that will fit. */
7716 todo_units
= min (len_units
, payload_capacity_bytes
/ unit_size
);
7718 payload_capacity_bytes
-= hexnumlen (todo_units
);
7719 todo_units
= min (todo_units
, payload_capacity_bytes
/ unit_size
);
7723 /* Number of bytes that will fit. */
7724 todo_units
= min (len_units
, (payload_capacity_bytes
/ unit_size
) / 2);
7726 payload_capacity_bytes
-= hexnumlen (todo_units
);
7727 todo_units
= min (todo_units
, (payload_capacity_bytes
/ unit_size
) / 2);
7730 if (todo_units
<= 0)
7731 internal_error (__FILE__
, __LINE__
,
7732 _("minimum packet size too small to write data"));
7734 /* If we already need another packet, then try to align the end
7735 of this packet to a useful boundary. */
7736 if (todo_units
> 2 * REMOTE_ALIGN_WRITES
&& todo_units
< len_units
)
7737 todo_units
= align_for_efficient_write (todo_units
, memaddr
);
7739 /* Append "<memaddr>". */
7740 memaddr
= remote_address_masked (memaddr
);
7741 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
7748 /* Append the length and retain its location and size. It may need to be
7749 adjusted once the packet body has been created. */
7751 plenlen
= hexnumstr (p
, (ULONGEST
) todo_units
);
7759 /* Append the packet body. */
7760 if (packet_format
== 'X')
7762 /* Binary mode. Send target system values byte by byte, in
7763 increasing byte addresses. Only escape certain critical
7765 payload_length_bytes
=
7766 remote_escape_output (myaddr
, todo_units
, unit_size
, (gdb_byte
*) p
,
7767 &units_written
, payload_capacity_bytes
);
7769 /* If not all TODO units fit, then we'll need another packet. Make
7770 a second try to keep the end of the packet aligned. Don't do
7771 this if the packet is tiny. */
7772 if (units_written
< todo_units
&& units_written
> 2 * REMOTE_ALIGN_WRITES
)
7776 new_todo_units
= align_for_efficient_write (units_written
, memaddr
);
7778 if (new_todo_units
!= units_written
)
7779 payload_length_bytes
=
7780 remote_escape_output (myaddr
, new_todo_units
, unit_size
,
7781 (gdb_byte
*) p
, &units_written
,
7782 payload_capacity_bytes
);
7785 p
+= payload_length_bytes
;
7786 if (use_length
&& units_written
< todo_units
)
7788 /* Escape chars have filled up the buffer prematurely,
7789 and we have actually sent fewer units than planned.
7790 Fix-up the length field of the packet. Use the same
7791 number of characters as before. */
7792 plen
+= hexnumnstr (plen
, (ULONGEST
) units_written
,
7794 *plen
= ':'; /* overwrite \0 from hexnumnstr() */
7799 /* Normal mode: Send target system values byte by byte, in
7800 increasing byte addresses. Each byte is encoded as a two hex
7802 p
+= 2 * bin2hex (myaddr
, p
, todo_units
* unit_size
);
7803 units_written
= todo_units
;
7806 putpkt_binary (rs
->buf
, (int) (p
- rs
->buf
));
7807 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7809 if (rs
->buf
[0] == 'E')
7810 return TARGET_XFER_E_IO
;
7812 /* Return UNITS_WRITTEN, not TODO_UNITS, in case escape chars caused us to
7813 send fewer units than we'd planned. */
7814 *xfered_len_units
= (ULONGEST
) units_written
;
7815 return TARGET_XFER_OK
;
7818 /* Write memory data directly to the remote machine.
7819 This does not inform the data cache; the data cache uses this.
7820 MEMADDR is the address in the remote memory space.
7821 MYADDR is the address of the buffer in our space.
7822 LEN is the number of bytes.
7824 Return the transferred status, error or OK (an
7825 'enum target_xfer_status' value). Save the number of bytes
7826 transferred in *XFERED_LEN. Only transfer a single packet. */
7828 static enum target_xfer_status
7829 remote_write_bytes (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ULONGEST len
,
7830 int unit_size
, ULONGEST
*xfered_len
)
7832 char *packet_format
= 0;
7834 /* Check whether the target supports binary download. */
7835 check_binary_download (memaddr
);
7837 switch (packet_support (PACKET_X
))
7840 packet_format
= "X";
7842 case PACKET_DISABLE
:
7843 packet_format
= "M";
7845 case PACKET_SUPPORT_UNKNOWN
:
7846 internal_error (__FILE__
, __LINE__
,
7847 _("remote_write_bytes: bad internal state"));
7849 internal_error (__FILE__
, __LINE__
, _("bad switch"));
7852 return remote_write_bytes_aux (packet_format
,
7853 memaddr
, myaddr
, len
, unit_size
, xfered_len
,
7854 packet_format
[0], 1);
7857 /* Read memory data directly from the remote machine.
7858 This does not use the data cache; the data cache uses this.
7859 MEMADDR is the address in the remote memory space.
7860 MYADDR is the address of the buffer in our space.
7861 LEN_UNITS is the number of addressable memory units to read..
7862 UNIT_SIZE is the length in bytes of an addressable unit.
7864 Return the transferred status, error or OK (an
7865 'enum target_xfer_status' value). Save the number of bytes
7866 transferred in *XFERED_LEN_UNITS.
7868 See the comment of remote_write_bytes_aux for an example of
7869 memory read/write exchange between gdb and the stub. */
7871 static enum target_xfer_status
7872 remote_read_bytes_1 (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ULONGEST len_units
,
7873 int unit_size
, ULONGEST
*xfered_len_units
)
7875 struct remote_state
*rs
= get_remote_state ();
7876 int buf_size_bytes
; /* Max size of packet output buffer. */
7881 buf_size_bytes
= get_memory_read_packet_size ();
7882 /* The packet buffer will be large enough for the payload;
7883 get_memory_packet_size ensures this. */
7885 /* Number of units that will fit. */
7886 todo_units
= min (len_units
, (buf_size_bytes
/ unit_size
) / 2);
7888 /* Construct "m"<memaddr>","<len>". */
7889 memaddr
= remote_address_masked (memaddr
);
7892 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
7894 p
+= hexnumstr (p
, (ULONGEST
) todo_units
);
7897 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7898 if (rs
->buf
[0] == 'E'
7899 && isxdigit (rs
->buf
[1]) && isxdigit (rs
->buf
[2])
7900 && rs
->buf
[3] == '\0')
7901 return TARGET_XFER_E_IO
;
7902 /* Reply describes memory byte by byte, each byte encoded as two hex
7905 decoded_bytes
= hex2bin (p
, myaddr
, todo_units
* unit_size
);
7906 /* Return what we have. Let higher layers handle partial reads. */
7907 *xfered_len_units
= (ULONGEST
) (decoded_bytes
/ unit_size
);
7908 return TARGET_XFER_OK
;
7911 /* Using the set of read-only target sections of remote, read live
7914 For interface/parameters/return description see target.h,
7917 static enum target_xfer_status
7918 remote_xfer_live_readonly_partial (struct target_ops
*ops
, gdb_byte
*readbuf
,
7919 ULONGEST memaddr
, ULONGEST len
,
7920 int unit_size
, ULONGEST
*xfered_len
)
7922 struct target_section
*secp
;
7923 struct target_section_table
*table
;
7925 secp
= target_section_by_addr (ops
, memaddr
);
7927 && (bfd_get_section_flags (secp
->the_bfd_section
->owner
,
7928 secp
->the_bfd_section
)
7931 struct target_section
*p
;
7932 ULONGEST memend
= memaddr
+ len
;
7934 table
= target_get_section_table (ops
);
7936 for (p
= table
->sections
; p
< table
->sections_end
; p
++)
7938 if (memaddr
>= p
->addr
)
7940 if (memend
<= p
->endaddr
)
7942 /* Entire transfer is within this section. */
7943 return remote_read_bytes_1 (memaddr
, readbuf
, len
, unit_size
,
7946 else if (memaddr
>= p
->endaddr
)
7948 /* This section ends before the transfer starts. */
7953 /* This section overlaps the transfer. Just do half. */
7954 len
= p
->endaddr
- memaddr
;
7955 return remote_read_bytes_1 (memaddr
, readbuf
, len
, unit_size
,
7962 return TARGET_XFER_EOF
;
7965 /* Similar to remote_read_bytes_1, but it reads from the remote stub
7966 first if the requested memory is unavailable in traceframe.
7967 Otherwise, fall back to remote_read_bytes_1. */
7969 static enum target_xfer_status
7970 remote_read_bytes (struct target_ops
*ops
, CORE_ADDR memaddr
,
7971 gdb_byte
*myaddr
, ULONGEST len
, int unit_size
,
7972 ULONGEST
*xfered_len
)
7975 return TARGET_XFER_EOF
;
7977 if (get_traceframe_number () != -1)
7979 VEC(mem_range_s
) *available
;
7981 /* If we fail to get the set of available memory, then the
7982 target does not support querying traceframe info, and so we
7983 attempt reading from the traceframe anyway (assuming the
7984 target implements the old QTro packet then). */
7985 if (traceframe_available_memory (&available
, memaddr
, len
))
7987 struct cleanup
*old_chain
;
7989 old_chain
= make_cleanup (VEC_cleanup(mem_range_s
), &available
);
7991 if (VEC_empty (mem_range_s
, available
)
7992 || VEC_index (mem_range_s
, available
, 0)->start
!= memaddr
)
7994 enum target_xfer_status res
;
7996 /* Don't read into the traceframe's available
7998 if (!VEC_empty (mem_range_s
, available
))
8000 LONGEST oldlen
= len
;
8002 len
= VEC_index (mem_range_s
, available
, 0)->start
- memaddr
;
8003 gdb_assert (len
<= oldlen
);
8006 do_cleanups (old_chain
);
8008 /* This goes through the topmost target again. */
8009 res
= remote_xfer_live_readonly_partial (ops
, myaddr
, memaddr
,
8010 len
, unit_size
, xfered_len
);
8011 if (res
== TARGET_XFER_OK
)
8012 return TARGET_XFER_OK
;
8015 /* No use trying further, we know some memory starting
8016 at MEMADDR isn't available. */
8018 return TARGET_XFER_UNAVAILABLE
;
8022 /* Don't try to read more than how much is available, in
8023 case the target implements the deprecated QTro packet to
8024 cater for older GDBs (the target's knowledge of read-only
8025 sections may be outdated by now). */
8026 len
= VEC_index (mem_range_s
, available
, 0)->length
;
8028 do_cleanups (old_chain
);
8032 return remote_read_bytes_1 (memaddr
, myaddr
, len
, unit_size
, xfered_len
);
8037 /* Sends a packet with content determined by the printf format string
8038 FORMAT and the remaining arguments, then gets the reply. Returns
8039 whether the packet was a success, a failure, or unknown. */
8041 static enum packet_result
remote_send_printf (const char *format
, ...)
8042 ATTRIBUTE_PRINTF (1, 2);
8044 static enum packet_result
8045 remote_send_printf (const char *format
, ...)
8047 struct remote_state
*rs
= get_remote_state ();
8048 int max_size
= get_remote_packet_size ();
8051 va_start (ap
, format
);
8054 if (vsnprintf (rs
->buf
, max_size
, format
, ap
) >= max_size
)
8055 internal_error (__FILE__
, __LINE__
, _("Too long remote packet."));
8057 if (putpkt (rs
->buf
) < 0)
8058 error (_("Communication problem with target."));
8061 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8063 return packet_check_result (rs
->buf
);
8067 restore_remote_timeout (void *p
)
8069 int value
= *(int *)p
;
8071 remote_timeout
= value
;
8074 /* Flash writing can take quite some time. We'll set
8075 effectively infinite timeout for flash operations.
8076 In future, we'll need to decide on a better approach. */
8077 static const int remote_flash_timeout
= 1000;
8080 remote_flash_erase (struct target_ops
*ops
,
8081 ULONGEST address
, LONGEST length
)
8083 int addr_size
= gdbarch_addr_bit (target_gdbarch ()) / 8;
8084 int saved_remote_timeout
= remote_timeout
;
8085 enum packet_result ret
;
8086 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
8087 &saved_remote_timeout
);
8089 remote_timeout
= remote_flash_timeout
;
8091 ret
= remote_send_printf ("vFlashErase:%s,%s",
8092 phex (address
, addr_size
),
8096 case PACKET_UNKNOWN
:
8097 error (_("Remote target does not support flash erase"));
8099 error (_("Error erasing flash with vFlashErase packet"));
8104 do_cleanups (back_to
);
8107 static enum target_xfer_status
8108 remote_flash_write (struct target_ops
*ops
, ULONGEST address
,
8109 ULONGEST length
, ULONGEST
*xfered_len
,
8110 const gdb_byte
*data
)
8112 int saved_remote_timeout
= remote_timeout
;
8113 enum target_xfer_status ret
;
8114 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
8115 &saved_remote_timeout
);
8117 remote_timeout
= remote_flash_timeout
;
8118 ret
= remote_write_bytes_aux ("vFlashWrite:", address
, data
, length
, 1,
8120 do_cleanups (back_to
);
8126 remote_flash_done (struct target_ops
*ops
)
8128 int saved_remote_timeout
= remote_timeout
;
8130 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
8131 &saved_remote_timeout
);
8133 remote_timeout
= remote_flash_timeout
;
8134 ret
= remote_send_printf ("vFlashDone");
8135 do_cleanups (back_to
);
8139 case PACKET_UNKNOWN
:
8140 error (_("Remote target does not support vFlashDone"));
8142 error (_("Error finishing flash operation"));
8149 remote_files_info (struct target_ops
*ignore
)
8151 puts_filtered ("Debugging a target over a serial line.\n");
8154 /* Stuff for dealing with the packets which are part of this protocol.
8155 See comment at top of file for details. */
8157 /* Close/unpush the remote target, and throw a TARGET_CLOSE_ERROR
8158 error to higher layers. Called when a serial error is detected.
8159 The exception message is STRING, followed by a colon and a blank,
8160 the system error message for errno at function entry and final dot
8161 for output compatibility with throw_perror_with_name. */
8164 unpush_and_perror (const char *string
)
8166 int saved_errno
= errno
;
8168 remote_unpush_target ();
8169 throw_error (TARGET_CLOSE_ERROR
, "%s: %s.", string
,
8170 safe_strerror (saved_errno
));
8173 /* Read a single character from the remote end. */
8176 readchar (int timeout
)
8179 struct remote_state
*rs
= get_remote_state ();
8181 ch
= serial_readchar (rs
->remote_desc
, timeout
);
8186 switch ((enum serial_rc
) ch
)
8189 remote_unpush_target ();
8190 throw_error (TARGET_CLOSE_ERROR
, _("Remote connection closed"));
8193 unpush_and_perror (_("Remote communication error. "
8194 "Target disconnected."));
8196 case SERIAL_TIMEOUT
:
8202 /* Wrapper for serial_write that closes the target and throws if
8206 remote_serial_write (const char *str
, int len
)
8208 struct remote_state
*rs
= get_remote_state ();
8210 if (serial_write (rs
->remote_desc
, str
, len
))
8212 unpush_and_perror (_("Remote communication error. "
8213 "Target disconnected."));
8217 /* Send the command in *BUF to the remote machine, and read the reply
8218 into *BUF. Report an error if we get an error reply. Resize
8219 *BUF using xrealloc if necessary to hold the result, and update
8223 remote_send (char **buf
,
8227 getpkt (buf
, sizeof_buf
, 0);
8229 if ((*buf
)[0] == 'E')
8230 error (_("Remote failure reply: %s"), *buf
);
8233 /* Return a pointer to an xmalloc'ed string representing an escaped
8234 version of BUF, of len N. E.g. \n is converted to \\n, \t to \\t,
8235 etc. The caller is responsible for releasing the returned
8239 escape_buffer (const char *buf
, int n
)
8241 struct cleanup
*old_chain
;
8242 struct ui_file
*stb
;
8245 stb
= mem_fileopen ();
8246 old_chain
= make_cleanup_ui_file_delete (stb
);
8248 fputstrn_unfiltered (buf
, n
, '\\', stb
);
8249 str
= ui_file_xstrdup (stb
, NULL
);
8250 do_cleanups (old_chain
);
8254 /* Display a null-terminated packet on stdout, for debugging, using C
8258 print_packet (const char *buf
)
8260 puts_filtered ("\"");
8261 fputstr_filtered (buf
, '"', gdb_stdout
);
8262 puts_filtered ("\"");
8266 putpkt (const char *buf
)
8268 return putpkt_binary (buf
, strlen (buf
));
8271 /* Send a packet to the remote machine, with error checking. The data
8272 of the packet is in BUF. The string in BUF can be at most
8273 get_remote_packet_size () - 5 to account for the $, # and checksum,
8274 and for a possible /0 if we are debugging (remote_debug) and want
8275 to print the sent packet as a string. */
8278 putpkt_binary (const char *buf
, int cnt
)
8280 struct remote_state
*rs
= get_remote_state ();
8282 unsigned char csum
= 0;
8283 char *buf2
= (char *) xmalloc (cnt
+ 6);
8284 struct cleanup
*old_chain
= make_cleanup (xfree
, buf2
);
8290 /* Catch cases like trying to read memory or listing threads while
8291 we're waiting for a stop reply. The remote server wouldn't be
8292 ready to handle this request, so we'd hang and timeout. We don't
8293 have to worry about this in synchronous mode, because in that
8294 case it's not possible to issue a command while the target is
8295 running. This is not a problem in non-stop mode, because in that
8296 case, the stub is always ready to process serial input. */
8297 if (!target_is_non_stop_p ()
8298 && target_is_async_p ()
8299 && rs
->waiting_for_stop_reply
)
8301 error (_("Cannot execute this command while the target is running.\n"
8302 "Use the \"interrupt\" command to stop the target\n"
8303 "and then try again."));
8306 /* We're sending out a new packet. Make sure we don't look at a
8307 stale cached response. */
8308 rs
->cached_wait_status
= 0;
8310 /* Copy the packet into buffer BUF2, encapsulating it
8311 and giving it a checksum. */
8316 for (i
= 0; i
< cnt
; i
++)
8322 *p
++ = tohex ((csum
>> 4) & 0xf);
8323 *p
++ = tohex (csum
& 0xf);
8325 /* Send it over and over until we get a positive ack. */
8329 int started_error_output
= 0;
8333 struct cleanup
*old_chain
;
8337 str
= escape_buffer (buf2
, p
- buf2
);
8338 old_chain
= make_cleanup (xfree
, str
);
8339 fprintf_unfiltered (gdb_stdlog
, "Sending packet: %s...", str
);
8340 gdb_flush (gdb_stdlog
);
8341 do_cleanups (old_chain
);
8343 remote_serial_write (buf2
, p
- buf2
);
8345 /* If this is a no acks version of the remote protocol, send the
8346 packet and move on. */
8350 /* Read until either a timeout occurs (-2) or '+' is read.
8351 Handle any notification that arrives in the mean time. */
8354 ch
= readchar (remote_timeout
);
8362 case SERIAL_TIMEOUT
:
8365 if (started_error_output
)
8367 putchar_unfiltered ('\n');
8368 started_error_output
= 0;
8377 fprintf_unfiltered (gdb_stdlog
, "Ack\n");
8378 do_cleanups (old_chain
);
8382 fprintf_unfiltered (gdb_stdlog
, "Nak\n");
8384 case SERIAL_TIMEOUT
:
8388 do_cleanups (old_chain
);
8391 break; /* Retransmit buffer. */
8395 fprintf_unfiltered (gdb_stdlog
,
8396 "Packet instead of Ack, ignoring it\n");
8397 /* It's probably an old response sent because an ACK
8398 was lost. Gobble up the packet and ack it so it
8399 doesn't get retransmitted when we resend this
8402 remote_serial_write ("+", 1);
8403 continue; /* Now, go look for +. */
8410 /* If we got a notification, handle it, and go back to looking
8412 /* We've found the start of a notification. Now
8413 collect the data. */
8414 val
= read_frame (&rs
->buf
, &rs
->buf_size
);
8419 struct cleanup
*old_chain
;
8422 str
= escape_buffer (rs
->buf
, val
);
8423 old_chain
= make_cleanup (xfree
, str
);
8424 fprintf_unfiltered (gdb_stdlog
,
8425 " Notification received: %s\n",
8427 do_cleanups (old_chain
);
8429 handle_notification (rs
->notif_state
, rs
->buf
);
8430 /* We're in sync now, rewait for the ack. */
8437 if (!started_error_output
)
8439 started_error_output
= 1;
8440 fprintf_unfiltered (gdb_stdlog
, "putpkt: Junk: ");
8442 fputc_unfiltered (ch
& 0177, gdb_stdlog
);
8443 fprintf_unfiltered (gdb_stdlog
, "%s", rs
->buf
);
8452 if (!started_error_output
)
8454 started_error_output
= 1;
8455 fprintf_unfiltered (gdb_stdlog
, "putpkt: Junk: ");
8457 fputc_unfiltered (ch
& 0177, gdb_stdlog
);
8461 break; /* Here to retransmit. */
8465 /* This is wrong. If doing a long backtrace, the user should be
8466 able to get out next time we call QUIT, without anything as
8467 violent as interrupt_query. If we want to provide a way out of
8468 here without getting to the next QUIT, it should be based on
8469 hitting ^C twice as in remote_wait. */
8478 do_cleanups (old_chain
);
8482 /* Come here after finding the start of a frame when we expected an
8483 ack. Do our best to discard the rest of this packet. */
8492 c
= readchar (remote_timeout
);
8495 case SERIAL_TIMEOUT
:
8496 /* Nothing we can do. */
8499 /* Discard the two bytes of checksum and stop. */
8500 c
= readchar (remote_timeout
);
8502 c
= readchar (remote_timeout
);
8505 case '*': /* Run length encoding. */
8506 /* Discard the repeat count. */
8507 c
= readchar (remote_timeout
);
8512 /* A regular character. */
8518 /* Come here after finding the start of the frame. Collect the rest
8519 into *BUF, verifying the checksum, length, and handling run-length
8520 compression. NUL terminate the buffer. If there is not enough room,
8521 expand *BUF using xrealloc.
8523 Returns -1 on error, number of characters in buffer (ignoring the
8524 trailing NULL) on success. (could be extended to return one of the
8525 SERIAL status indications). */
8528 read_frame (char **buf_p
,
8535 struct remote_state
*rs
= get_remote_state ();
8542 c
= readchar (remote_timeout
);
8545 case SERIAL_TIMEOUT
:
8547 fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog
);
8551 fputs_filtered ("Saw new packet start in middle of old one\n",
8553 return -1; /* Start a new packet, count retries. */
8556 unsigned char pktcsum
;
8562 check_0
= readchar (remote_timeout
);
8564 check_1
= readchar (remote_timeout
);
8566 if (check_0
== SERIAL_TIMEOUT
|| check_1
== SERIAL_TIMEOUT
)
8569 fputs_filtered ("Timeout in checksum, retrying\n",
8573 else if (check_0
< 0 || check_1
< 0)
8576 fputs_filtered ("Communication error in checksum\n",
8581 /* Don't recompute the checksum; with no ack packets we
8582 don't have any way to indicate a packet retransmission
8587 pktcsum
= (fromhex (check_0
) << 4) | fromhex (check_1
);
8588 if (csum
== pktcsum
)
8593 struct cleanup
*old_chain
;
8596 str
= escape_buffer (buf
, bc
);
8597 old_chain
= make_cleanup (xfree
, str
);
8598 fprintf_unfiltered (gdb_stdlog
,
8599 "Bad checksum, sentsum=0x%x, "
8600 "csum=0x%x, buf=%s\n",
8601 pktcsum
, csum
, str
);
8602 do_cleanups (old_chain
);
8604 /* Number of characters in buffer ignoring trailing
8608 case '*': /* Run length encoding. */
8613 c
= readchar (remote_timeout
);
8615 repeat
= c
- ' ' + 3; /* Compute repeat count. */
8617 /* The character before ``*'' is repeated. */
8619 if (repeat
> 0 && repeat
<= 255 && bc
> 0)
8621 if (bc
+ repeat
- 1 >= *sizeof_buf
- 1)
8623 /* Make some more room in the buffer. */
8624 *sizeof_buf
+= repeat
;
8625 *buf_p
= (char *) xrealloc (*buf_p
, *sizeof_buf
);
8629 memset (&buf
[bc
], buf
[bc
- 1], repeat
);
8635 printf_filtered (_("Invalid run length encoding: %s\n"), buf
);
8639 if (bc
>= *sizeof_buf
- 1)
8641 /* Make some more room in the buffer. */
8643 *buf_p
= (char *) xrealloc (*buf_p
, *sizeof_buf
);
8654 /* Read a packet from the remote machine, with error checking, and
8655 store it in *BUF. Resize *BUF using xrealloc if necessary to hold
8656 the result, and update *SIZEOF_BUF. If FOREVER, wait forever
8657 rather than timing out; this is used (in synchronous mode) to wait
8658 for a target that is is executing user code to stop. */
8659 /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we
8660 don't have to change all the calls to getpkt to deal with the
8661 return value, because at the moment I don't know what the right
8662 thing to do it for those. */
8668 getpkt_sane (buf
, sizeof_buf
, forever
);
8672 /* Read a packet from the remote machine, with error checking, and
8673 store it in *BUF. Resize *BUF using xrealloc if necessary to hold
8674 the result, and update *SIZEOF_BUF. If FOREVER, wait forever
8675 rather than timing out; this is used (in synchronous mode) to wait
8676 for a target that is is executing user code to stop. If FOREVER ==
8677 0, this function is allowed to time out gracefully and return an
8678 indication of this to the caller. Otherwise return the number of
8679 bytes read. If EXPECTING_NOTIF, consider receiving a notification
8680 enough reason to return to the caller. *IS_NOTIF is an output
8681 boolean that indicates whether *BUF holds a notification or not
8682 (a regular packet). */
8685 getpkt_or_notif_sane_1 (char **buf
, long *sizeof_buf
, int forever
,
8686 int expecting_notif
, int *is_notif
)
8688 struct remote_state
*rs
= get_remote_state ();
8694 /* We're reading a new response. Make sure we don't look at a
8695 previously cached response. */
8696 rs
->cached_wait_status
= 0;
8698 strcpy (*buf
, "timeout");
8701 timeout
= watchdog
> 0 ? watchdog
: -1;
8702 else if (expecting_notif
)
8703 timeout
= 0; /* There should already be a char in the buffer. If
8706 timeout
= remote_timeout
;
8710 /* Process any number of notifications, and then return when
8714 /* If we get a timeout or bad checksum, retry up to MAX_TRIES
8716 for (tries
= 1; tries
<= MAX_TRIES
; tries
++)
8718 /* This can loop forever if the remote side sends us
8719 characters continuously, but if it pauses, we'll get
8720 SERIAL_TIMEOUT from readchar because of timeout. Then
8721 we'll count that as a retry.
8723 Note that even when forever is set, we will only wait
8724 forever prior to the start of a packet. After that, we
8725 expect characters to arrive at a brisk pace. They should
8726 show up within remote_timeout intervals. */
8728 c
= readchar (timeout
);
8729 while (c
!= SERIAL_TIMEOUT
&& c
!= '$' && c
!= '%');
8731 if (c
== SERIAL_TIMEOUT
)
8733 if (expecting_notif
)
8734 return -1; /* Don't complain, it's normal to not get
8735 anything in this case. */
8737 if (forever
) /* Watchdog went off? Kill the target. */
8740 remote_unpush_target ();
8741 throw_error (TARGET_CLOSE_ERROR
,
8742 _("Watchdog timeout has expired. "
8743 "Target detached."));
8746 fputs_filtered ("Timed out.\n", gdb_stdlog
);
8750 /* We've found the start of a packet or notification.
8751 Now collect the data. */
8752 val
= read_frame (buf
, sizeof_buf
);
8757 remote_serial_write ("-", 1);
8760 if (tries
> MAX_TRIES
)
8762 /* We have tried hard enough, and just can't receive the
8763 packet/notification. Give up. */
8764 printf_unfiltered (_("Ignoring packet error, continuing...\n"));
8766 /* Skip the ack char if we're in no-ack mode. */
8767 if (!rs
->noack_mode
)
8768 remote_serial_write ("+", 1);
8772 /* If we got an ordinary packet, return that to our caller. */
8777 struct cleanup
*old_chain
;
8780 str
= escape_buffer (*buf
, val
);
8781 old_chain
= make_cleanup (xfree
, str
);
8782 fprintf_unfiltered (gdb_stdlog
, "Packet received: %s\n", str
);
8783 do_cleanups (old_chain
);
8786 /* Skip the ack char if we're in no-ack mode. */
8787 if (!rs
->noack_mode
)
8788 remote_serial_write ("+", 1);
8789 if (is_notif
!= NULL
)
8794 /* If we got a notification, handle it, and go back to looking
8798 gdb_assert (c
== '%');
8802 struct cleanup
*old_chain
;
8805 str
= escape_buffer (*buf
, val
);
8806 old_chain
= make_cleanup (xfree
, str
);
8807 fprintf_unfiltered (gdb_stdlog
,
8808 " Notification received: %s\n",
8810 do_cleanups (old_chain
);
8812 if (is_notif
!= NULL
)
8815 handle_notification (rs
->notif_state
, *buf
);
8817 /* Notifications require no acknowledgement. */
8819 if (expecting_notif
)
8826 getpkt_sane (char **buf
, long *sizeof_buf
, int forever
)
8828 return getpkt_or_notif_sane_1 (buf
, sizeof_buf
, forever
, 0, NULL
);
8832 getpkt_or_notif_sane (char **buf
, long *sizeof_buf
, int forever
,
8835 return getpkt_or_notif_sane_1 (buf
, sizeof_buf
, forever
, 1,
8839 /* Check whether EVENT is a fork event for the process specified
8840 by the pid passed in DATA, and if it is, kill the fork child. */
8843 kill_child_of_pending_fork (QUEUE (stop_reply_p
) *q
,
8844 QUEUE_ITER (stop_reply_p
) *iter
,
8848 struct queue_iter_param
*param
= (struct queue_iter_param
*) data
;
8849 int parent_pid
= *(int *) param
->input
;
8851 if (is_pending_fork_parent (&event
->ws
, parent_pid
, event
->ptid
))
8853 struct remote_state
*rs
= get_remote_state ();
8854 int child_pid
= ptid_get_pid (event
->ws
.value
.related_pid
);
8857 res
= remote_vkill (child_pid
, rs
);
8859 error (_("Can't kill fork child process %d"), child_pid
);
8865 /* Kill any new fork children of process PID that haven't been
8866 processed by follow_fork. */
8869 kill_new_fork_children (int pid
, struct remote_state
*rs
)
8871 struct thread_info
*thread
;
8872 struct notif_client
*notif
= ¬if_client_stop
;
8873 struct queue_iter_param param
;
8875 /* Kill the fork child threads of any threads in process PID
8876 that are stopped at a fork event. */
8877 ALL_NON_EXITED_THREADS (thread
)
8879 struct target_waitstatus
*ws
= &thread
->pending_follow
;
8881 if (is_pending_fork_parent (ws
, pid
, thread
->ptid
))
8883 struct remote_state
*rs
= get_remote_state ();
8884 int child_pid
= ptid_get_pid (ws
->value
.related_pid
);
8887 res
= remote_vkill (child_pid
, rs
);
8889 error (_("Can't kill fork child process %d"), child_pid
);
8893 /* Check for any pending fork events (not reported or processed yet)
8894 in process PID and kill those fork child threads as well. */
8895 remote_notif_get_pending_events (notif
);
8897 param
.output
= NULL
;
8898 QUEUE_iterate (stop_reply_p
, stop_reply_queue
,
8899 kill_child_of_pending_fork
, ¶m
);
8903 /* Target hook to kill the current inferior. */
8906 remote_kill (struct target_ops
*ops
)
8909 int pid
= ptid_get_pid (inferior_ptid
);
8910 struct remote_state
*rs
= get_remote_state ();
8912 if (packet_support (PACKET_vKill
) != PACKET_DISABLE
)
8914 /* If we're stopped while forking and we haven't followed yet,
8915 kill the child task. We need to do this before killing the
8916 parent task because if this is a vfork then the parent will
8918 kill_new_fork_children (pid
, rs
);
8920 res
= remote_vkill (pid
, rs
);
8923 target_mourn_inferior ();
8928 /* If we are in 'target remote' mode and we are killing the only
8929 inferior, then we will tell gdbserver to exit and unpush the
8931 if (res
== -1 && !remote_multi_process_p (rs
)
8932 && number_of_live_inferiors () == 1)
8936 /* We've killed the remote end, we get to mourn it. If we are
8937 not in extended mode, mourning the inferior also unpushes
8938 remote_ops from the target stack, which closes the remote
8940 target_mourn_inferior ();
8945 error (_("Can't kill process"));
8948 /* Send a kill request to the target using the 'vKill' packet. */
8951 remote_vkill (int pid
, struct remote_state
*rs
)
8953 if (packet_support (PACKET_vKill
) == PACKET_DISABLE
)
8956 /* Tell the remote target to detach. */
8957 xsnprintf (rs
->buf
, get_remote_packet_size (), "vKill;%x", pid
);
8959 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8961 switch (packet_ok (rs
->buf
,
8962 &remote_protocol_packets
[PACKET_vKill
]))
8968 case PACKET_UNKNOWN
:
8971 internal_error (__FILE__
, __LINE__
, _("Bad result from packet_ok"));
8975 /* Send a kill request to the target using the 'k' packet. */
8978 remote_kill_k (void)
8980 /* Catch errors so the user can quit from gdb even when we
8981 aren't on speaking terms with the remote system. */
8986 CATCH (ex
, RETURN_MASK_ERROR
)
8988 if (ex
.error
== TARGET_CLOSE_ERROR
)
8990 /* If we got an (EOF) error that caused the target
8991 to go away, then we're done, that's what we wanted.
8992 "k" is susceptible to cause a premature EOF, given
8993 that the remote server isn't actually required to
8994 reply to "k", and it can happen that it doesn't
8995 even get to reply ACK to the "k". */
8999 /* Otherwise, something went wrong. We didn't actually kill
9000 the target. Just propagate the exception, and let the
9001 user or higher layers decide what to do. */
9002 throw_exception (ex
);
9008 remote_mourn (struct target_ops
*target
)
9010 struct remote_state
*rs
= get_remote_state ();
9012 /* In 'target remote' mode with one inferior, we close the connection. */
9013 if (!rs
->extended
&& number_of_live_inferiors () <= 1)
9015 unpush_target (target
);
9017 /* remote_close takes care of doing most of the clean up. */
9018 generic_mourn_inferior ();
9022 /* In case we got here due to an error, but we're going to stay
9024 rs
->waiting_for_stop_reply
= 0;
9026 /* If the current general thread belonged to the process we just
9027 detached from or has exited, the remote side current general
9028 thread becomes undefined. Considering a case like this:
9030 - We just got here due to a detach.
9031 - The process that we're detaching from happens to immediately
9032 report a global breakpoint being hit in non-stop mode, in the
9033 same thread we had selected before.
9034 - GDB attaches to this process again.
9035 - This event happens to be the next event we handle.
9037 GDB would consider that the current general thread didn't need to
9038 be set on the stub side (with Hg), since for all it knew,
9039 GENERAL_THREAD hadn't changed.
9041 Notice that although in all-stop mode, the remote server always
9042 sets the current thread to the thread reporting the stop event,
9043 that doesn't happen in non-stop mode; in non-stop, the stub *must
9044 not* change the current thread when reporting a breakpoint hit,
9045 due to the decoupling of event reporting and event handling.
9047 To keep things simple, we always invalidate our notion of the
9049 record_currthread (rs
, minus_one_ptid
);
9051 /* Call common code to mark the inferior as not running. */
9052 generic_mourn_inferior ();
9054 if (!have_inferiors ())
9056 if (!remote_multi_process_p (rs
))
9058 /* Check whether the target is running now - some remote stubs
9059 automatically restart after kill. */
9061 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9063 if (rs
->buf
[0] == 'S' || rs
->buf
[0] == 'T')
9065 /* Assume that the target has been restarted. Set
9066 inferior_ptid so that bits of core GDB realizes
9067 there's something here, e.g., so that the user can
9068 say "kill" again. */
9069 inferior_ptid
= magic_null_ptid
;
9076 extended_remote_supports_disable_randomization (struct target_ops
*self
)
9078 return packet_support (PACKET_QDisableRandomization
) == PACKET_ENABLE
;
9082 extended_remote_disable_randomization (int val
)
9084 struct remote_state
*rs
= get_remote_state ();
9087 xsnprintf (rs
->buf
, get_remote_packet_size (), "QDisableRandomization:%x",
9090 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
9092 error (_("Target does not support QDisableRandomization."));
9093 if (strcmp (reply
, "OK") != 0)
9094 error (_("Bogus QDisableRandomization reply from target: %s"), reply
);
9098 extended_remote_run (char *args
)
9100 struct remote_state
*rs
= get_remote_state ();
9102 const char *remote_exec_file
= get_remote_exec_file ();
9104 /* If the user has disabled vRun support, or we have detected that
9105 support is not available, do not try it. */
9106 if (packet_support (PACKET_vRun
) == PACKET_DISABLE
)
9109 strcpy (rs
->buf
, "vRun;");
9110 len
= strlen (rs
->buf
);
9112 if (strlen (remote_exec_file
) * 2 + len
>= get_remote_packet_size ())
9113 error (_("Remote file name too long for run packet"));
9114 len
+= 2 * bin2hex ((gdb_byte
*) remote_exec_file
, rs
->buf
+ len
,
9115 strlen (remote_exec_file
));
9117 gdb_assert (args
!= NULL
);
9120 struct cleanup
*back_to
;
9124 argv
= gdb_buildargv (args
);
9125 back_to
= make_cleanup_freeargv (argv
);
9126 for (i
= 0; argv
[i
] != NULL
; i
++)
9128 if (strlen (argv
[i
]) * 2 + 1 + len
>= get_remote_packet_size ())
9129 error (_("Argument list too long for run packet"));
9130 rs
->buf
[len
++] = ';';
9131 len
+= 2 * bin2hex ((gdb_byte
*) argv
[i
], rs
->buf
+ len
,
9134 do_cleanups (back_to
);
9137 rs
->buf
[len
++] = '\0';
9140 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9142 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_vRun
]))
9145 /* We have a wait response. All is well. */
9147 case PACKET_UNKNOWN
:
9150 if (remote_exec_file
[0] == '\0')
9151 error (_("Running the default executable on the remote target failed; "
9152 "try \"set remote exec-file\"?"));
9154 error (_("Running \"%s\" on the remote target failed"),
9157 gdb_assert_not_reached (_("bad switch"));
9161 /* In the extended protocol we want to be able to do things like
9162 "run" and have them basically work as expected. So we need
9163 a special create_inferior function. We support changing the
9164 executable file and the command line arguments, but not the
9168 extended_remote_create_inferior (struct target_ops
*ops
,
9169 char *exec_file
, char *args
,
9170 char **env
, int from_tty
)
9174 struct remote_state
*rs
= get_remote_state ();
9175 const char *remote_exec_file
= get_remote_exec_file ();
9177 /* If running asynchronously, register the target file descriptor
9178 with the event loop. */
9179 if (target_can_async_p ())
9182 /* Disable address space randomization if requested (and supported). */
9183 if (extended_remote_supports_disable_randomization (ops
))
9184 extended_remote_disable_randomization (disable_randomization
);
9186 /* Now restart the remote server. */
9187 run_worked
= extended_remote_run (args
) != -1;
9190 /* vRun was not supported. Fail if we need it to do what the
9192 if (remote_exec_file
[0])
9193 error (_("Remote target does not support \"set remote exec-file\""));
9195 error (_("Remote target does not support \"set args\" or run <ARGS>"));
9197 /* Fall back to "R". */
9198 extended_remote_restart ();
9201 if (!have_inferiors ())
9203 /* Clean up from the last time we ran, before we mark the target
9204 running again. This will mark breakpoints uninserted, and
9205 get_offsets may insert breakpoints. */
9206 init_thread_list ();
9207 init_wait_for_inferior ();
9210 /* vRun's success return is a stop reply. */
9211 stop_reply
= run_worked
? rs
->buf
: NULL
;
9212 add_current_inferior_and_thread (stop_reply
);
9214 /* Get updated offsets, if the stub uses qOffsets. */
9219 /* Given a location's target info BP_TGT and the packet buffer BUF, output
9220 the list of conditions (in agent expression bytecode format), if any, the
9221 target needs to evaluate. The output is placed into the packet buffer
9222 started from BUF and ended at BUF_END. */
9225 remote_add_target_side_condition (struct gdbarch
*gdbarch
,
9226 struct bp_target_info
*bp_tgt
, char *buf
,
9229 struct agent_expr
*aexpr
= NULL
;
9232 if (VEC_empty (agent_expr_p
, bp_tgt
->conditions
))
9235 buf
+= strlen (buf
);
9236 xsnprintf (buf
, buf_end
- buf
, "%s", ";");
9239 /* Send conditions to the target and free the vector. */
9241 VEC_iterate (agent_expr_p
, bp_tgt
->conditions
, ix
, aexpr
);
9244 xsnprintf (buf
, buf_end
- buf
, "X%x,", aexpr
->len
);
9245 buf
+= strlen (buf
);
9246 for (i
= 0; i
< aexpr
->len
; ++i
)
9247 buf
= pack_hex_byte (buf
, aexpr
->buf
[i
]);
9254 remote_add_target_side_commands (struct gdbarch
*gdbarch
,
9255 struct bp_target_info
*bp_tgt
, char *buf
)
9257 struct agent_expr
*aexpr
= NULL
;
9260 if (VEC_empty (agent_expr_p
, bp_tgt
->tcommands
))
9263 buf
+= strlen (buf
);
9265 sprintf (buf
, ";cmds:%x,", bp_tgt
->persist
);
9266 buf
+= strlen (buf
);
9268 /* Concatenate all the agent expressions that are commands into the
9271 VEC_iterate (agent_expr_p
, bp_tgt
->tcommands
, ix
, aexpr
);
9274 sprintf (buf
, "X%x,", aexpr
->len
);
9275 buf
+= strlen (buf
);
9276 for (i
= 0; i
< aexpr
->len
; ++i
)
9277 buf
= pack_hex_byte (buf
, aexpr
->buf
[i
]);
9282 /* Insert a breakpoint. On targets that have software breakpoint
9283 support, we ask the remote target to do the work; on targets
9284 which don't, we insert a traditional memory breakpoint. */
9287 remote_insert_breakpoint (struct target_ops
*ops
,
9288 struct gdbarch
*gdbarch
,
9289 struct bp_target_info
*bp_tgt
)
9291 /* Try the "Z" s/w breakpoint packet if it is not already disabled.
9292 If it succeeds, then set the support to PACKET_ENABLE. If it
9293 fails, and the user has explicitly requested the Z support then
9294 report an error, otherwise, mark it disabled and go on. */
9296 if (packet_support (PACKET_Z0
) != PACKET_DISABLE
)
9298 CORE_ADDR addr
= bp_tgt
->reqstd_address
;
9299 struct remote_state
*rs
;
9303 /* Make sure the remote is pointing at the right process, if
9305 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
9306 set_general_process ();
9308 gdbarch_remote_breakpoint_from_pc (gdbarch
, &addr
, &bpsize
);
9310 rs
= get_remote_state ();
9312 endbuf
= rs
->buf
+ get_remote_packet_size ();
9317 addr
= (ULONGEST
) remote_address_masked (addr
);
9318 p
+= hexnumstr (p
, addr
);
9319 xsnprintf (p
, endbuf
- p
, ",%d", bpsize
);
9321 if (remote_supports_cond_breakpoints (ops
))
9322 remote_add_target_side_condition (gdbarch
, bp_tgt
, p
, endbuf
);
9324 if (remote_can_run_breakpoint_commands (ops
))
9325 remote_add_target_side_commands (gdbarch
, bp_tgt
, p
);
9328 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9330 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
]))
9335 bp_tgt
->placed_address
= addr
;
9336 bp_tgt
->placed_size
= bpsize
;
9338 case PACKET_UNKNOWN
:
9343 /* If this breakpoint has target-side commands but this stub doesn't
9344 support Z0 packets, throw error. */
9345 if (!VEC_empty (agent_expr_p
, bp_tgt
->tcommands
))
9346 throw_error (NOT_SUPPORTED_ERROR
, _("\
9347 Target doesn't support breakpoints that have target side commands."));
9349 return memory_insert_breakpoint (ops
, gdbarch
, bp_tgt
);
9353 remote_remove_breakpoint (struct target_ops
*ops
,
9354 struct gdbarch
*gdbarch
,
9355 struct bp_target_info
*bp_tgt
)
9357 CORE_ADDR addr
= bp_tgt
->placed_address
;
9358 struct remote_state
*rs
= get_remote_state ();
9360 if (packet_support (PACKET_Z0
) != PACKET_DISABLE
)
9363 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
9365 /* Make sure the remote is pointing at the right process, if
9367 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
9368 set_general_process ();
9374 addr
= (ULONGEST
) remote_address_masked (bp_tgt
->placed_address
);
9375 p
+= hexnumstr (p
, addr
);
9376 xsnprintf (p
, endbuf
- p
, ",%d", bp_tgt
->placed_size
);
9379 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9381 return (rs
->buf
[0] == 'E');
9384 return memory_remove_breakpoint (ops
, gdbarch
, bp_tgt
);
9387 static enum Z_packet_type
9388 watchpoint_to_Z_packet (int type
)
9393 return Z_PACKET_WRITE_WP
;
9396 return Z_PACKET_READ_WP
;
9399 return Z_PACKET_ACCESS_WP
;
9402 internal_error (__FILE__
, __LINE__
,
9403 _("hw_bp_to_z: bad watchpoint type %d"), type
);
9408 remote_insert_watchpoint (struct target_ops
*self
, CORE_ADDR addr
, int len
,
9409 enum target_hw_bp_type type
, struct expression
*cond
)
9411 struct remote_state
*rs
= get_remote_state ();
9412 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
9414 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
9416 if (packet_support (PACKET_Z0
+ packet
) == PACKET_DISABLE
)
9419 /* Make sure the remote is pointing at the right process, if
9421 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
9422 set_general_process ();
9424 xsnprintf (rs
->buf
, endbuf
- rs
->buf
, "Z%x,", packet
);
9425 p
= strchr (rs
->buf
, '\0');
9426 addr
= remote_address_masked (addr
);
9427 p
+= hexnumstr (p
, (ULONGEST
) addr
);
9428 xsnprintf (p
, endbuf
- p
, ",%x", len
);
9431 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9433 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
+ packet
]))
9437 case PACKET_UNKNOWN
:
9442 internal_error (__FILE__
, __LINE__
,
9443 _("remote_insert_watchpoint: reached end of function"));
9447 remote_watchpoint_addr_within_range (struct target_ops
*target
, CORE_ADDR addr
,
9448 CORE_ADDR start
, int length
)
9450 CORE_ADDR diff
= remote_address_masked (addr
- start
);
9452 return diff
< length
;
9457 remote_remove_watchpoint (struct target_ops
*self
, CORE_ADDR addr
, int len
,
9458 enum target_hw_bp_type type
, struct expression
*cond
)
9460 struct remote_state
*rs
= get_remote_state ();
9461 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
9463 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
9465 if (packet_support (PACKET_Z0
+ packet
) == PACKET_DISABLE
)
9468 /* Make sure the remote is pointing at the right process, if
9470 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
9471 set_general_process ();
9473 xsnprintf (rs
->buf
, endbuf
- rs
->buf
, "z%x,", packet
);
9474 p
= strchr (rs
->buf
, '\0');
9475 addr
= remote_address_masked (addr
);
9476 p
+= hexnumstr (p
, (ULONGEST
) addr
);
9477 xsnprintf (p
, endbuf
- p
, ",%x", len
);
9479 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9481 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
+ packet
]))
9484 case PACKET_UNKNOWN
:
9489 internal_error (__FILE__
, __LINE__
,
9490 _("remote_remove_watchpoint: reached end of function"));
9494 int remote_hw_watchpoint_limit
= -1;
9495 int remote_hw_watchpoint_length_limit
= -1;
9496 int remote_hw_breakpoint_limit
= -1;
9499 remote_region_ok_for_hw_watchpoint (struct target_ops
*self
,
9500 CORE_ADDR addr
, int len
)
9502 if (remote_hw_watchpoint_length_limit
== 0)
9504 else if (remote_hw_watchpoint_length_limit
< 0)
9506 else if (len
<= remote_hw_watchpoint_length_limit
)
9513 remote_check_watch_resources (struct target_ops
*self
,
9514 enum bptype type
, int cnt
, int ot
)
9516 if (type
== bp_hardware_breakpoint
)
9518 if (remote_hw_breakpoint_limit
== 0)
9520 else if (remote_hw_breakpoint_limit
< 0)
9522 else if (cnt
<= remote_hw_breakpoint_limit
)
9527 if (remote_hw_watchpoint_limit
== 0)
9529 else if (remote_hw_watchpoint_limit
< 0)
9533 else if (cnt
<= remote_hw_watchpoint_limit
)
9539 /* The to_stopped_by_sw_breakpoint method of target remote. */
9542 remote_stopped_by_sw_breakpoint (struct target_ops
*ops
)
9544 struct thread_info
*thread
= inferior_thread ();
9546 return (thread
->priv
!= NULL
9547 && thread
->priv
->stop_reason
== TARGET_STOPPED_BY_SW_BREAKPOINT
);
9550 /* The to_supports_stopped_by_sw_breakpoint method of target
9554 remote_supports_stopped_by_sw_breakpoint (struct target_ops
*ops
)
9556 return (packet_support (PACKET_swbreak_feature
) == PACKET_ENABLE
);
9559 /* The to_stopped_by_hw_breakpoint method of target remote. */
9562 remote_stopped_by_hw_breakpoint (struct target_ops
*ops
)
9564 struct thread_info
*thread
= inferior_thread ();
9566 return (thread
->priv
!= NULL
9567 && thread
->priv
->stop_reason
== TARGET_STOPPED_BY_HW_BREAKPOINT
);
9570 /* The to_supports_stopped_by_hw_breakpoint method of target
9574 remote_supports_stopped_by_hw_breakpoint (struct target_ops
*ops
)
9576 return (packet_support (PACKET_hwbreak_feature
) == PACKET_ENABLE
);
9580 remote_stopped_by_watchpoint (struct target_ops
*ops
)
9582 struct thread_info
*thread
= inferior_thread ();
9584 return (thread
->priv
!= NULL
9585 && thread
->priv
->stop_reason
== TARGET_STOPPED_BY_WATCHPOINT
);
9589 remote_stopped_data_address (struct target_ops
*target
, CORE_ADDR
*addr_p
)
9591 struct thread_info
*thread
= inferior_thread ();
9593 if (thread
->priv
!= NULL
9594 && thread
->priv
->stop_reason
== TARGET_STOPPED_BY_WATCHPOINT
)
9596 *addr_p
= thread
->priv
->watch_data_address
;
9605 remote_insert_hw_breakpoint (struct target_ops
*self
, struct gdbarch
*gdbarch
,
9606 struct bp_target_info
*bp_tgt
)
9608 CORE_ADDR addr
= bp_tgt
->reqstd_address
;
9609 struct remote_state
*rs
;
9614 /* The length field should be set to the size of a breakpoint
9615 instruction, even though we aren't inserting one ourselves. */
9617 gdbarch_remote_breakpoint_from_pc (gdbarch
, &addr
, &bpsize
);
9619 if (packet_support (PACKET_Z1
) == PACKET_DISABLE
)
9622 /* Make sure the remote is pointing at the right process, if
9624 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
9625 set_general_process ();
9627 rs
= get_remote_state ();
9629 endbuf
= rs
->buf
+ get_remote_packet_size ();
9635 addr
= remote_address_masked (addr
);
9636 p
+= hexnumstr (p
, (ULONGEST
) addr
);
9637 xsnprintf (p
, endbuf
- p
, ",%x", bpsize
);
9639 if (remote_supports_cond_breakpoints (self
))
9640 remote_add_target_side_condition (gdbarch
, bp_tgt
, p
, endbuf
);
9642 if (remote_can_run_breakpoint_commands (self
))
9643 remote_add_target_side_commands (gdbarch
, bp_tgt
, p
);
9646 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9648 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z1
]))
9651 if (rs
->buf
[1] == '.')
9653 message
= strchr (rs
->buf
+ 2, '.');
9655 error (_("Remote failure reply: %s"), message
+ 1);
9658 case PACKET_UNKNOWN
:
9661 bp_tgt
->placed_address
= addr
;
9662 bp_tgt
->placed_size
= bpsize
;
9665 internal_error (__FILE__
, __LINE__
,
9666 _("remote_insert_hw_breakpoint: reached end of function"));
9671 remote_remove_hw_breakpoint (struct target_ops
*self
, struct gdbarch
*gdbarch
,
9672 struct bp_target_info
*bp_tgt
)
9675 struct remote_state
*rs
= get_remote_state ();
9677 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
9679 if (packet_support (PACKET_Z1
) == PACKET_DISABLE
)
9682 /* Make sure the remote is pointing at the right process, if
9684 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
9685 set_general_process ();
9691 addr
= remote_address_masked (bp_tgt
->placed_address
);
9692 p
+= hexnumstr (p
, (ULONGEST
) addr
);
9693 xsnprintf (p
, endbuf
- p
, ",%x", bp_tgt
->placed_size
);
9696 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9698 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z1
]))
9701 case PACKET_UNKNOWN
:
9706 internal_error (__FILE__
, __LINE__
,
9707 _("remote_remove_hw_breakpoint: reached end of function"));
9710 /* Verify memory using the "qCRC:" request. */
9713 remote_verify_memory (struct target_ops
*ops
,
9714 const gdb_byte
*data
, CORE_ADDR lma
, ULONGEST size
)
9716 struct remote_state
*rs
= get_remote_state ();
9717 unsigned long host_crc
, target_crc
;
9720 /* It doesn't make sense to use qCRC if the remote target is
9721 connected but not running. */
9722 if (target_has_execution
&& packet_support (PACKET_qCRC
) != PACKET_DISABLE
)
9724 enum packet_result result
;
9726 /* Make sure the remote is pointing at the right process. */
9727 set_general_process ();
9729 /* FIXME: assumes lma can fit into long. */
9730 xsnprintf (rs
->buf
, get_remote_packet_size (), "qCRC:%lx,%lx",
9731 (long) lma
, (long) size
);
9734 /* Be clever; compute the host_crc before waiting for target
9736 host_crc
= xcrc32 (data
, size
, 0xffffffff);
9738 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9740 result
= packet_ok (rs
->buf
,
9741 &remote_protocol_packets
[PACKET_qCRC
]);
9742 if (result
== PACKET_ERROR
)
9744 else if (result
== PACKET_OK
)
9746 for (target_crc
= 0, tmp
= &rs
->buf
[1]; *tmp
; tmp
++)
9747 target_crc
= target_crc
* 16 + fromhex (*tmp
);
9749 return (host_crc
== target_crc
);
9753 return simple_verify_memory (ops
, data
, lma
, size
);
9756 /* compare-sections command
9758 With no arguments, compares each loadable section in the exec bfd
9759 with the same memory range on the target, and reports mismatches.
9760 Useful for verifying the image on the target against the exec file. */
9763 compare_sections_command (char *args
, int from_tty
)
9766 struct cleanup
*old_chain
;
9768 const char *sectname
;
9777 error (_("command cannot be used without an exec file"));
9779 /* Make sure the remote is pointing at the right process. */
9780 set_general_process ();
9782 if (args
!= NULL
&& strcmp (args
, "-r") == 0)
9788 for (s
= exec_bfd
->sections
; s
; s
= s
->next
)
9790 if (!(s
->flags
& SEC_LOAD
))
9791 continue; /* Skip non-loadable section. */
9793 if (read_only
&& (s
->flags
& SEC_READONLY
) == 0)
9794 continue; /* Skip writeable sections */
9796 size
= bfd_get_section_size (s
);
9798 continue; /* Skip zero-length section. */
9800 sectname
= bfd_get_section_name (exec_bfd
, s
);
9801 if (args
&& strcmp (args
, sectname
) != 0)
9802 continue; /* Not the section selected by user. */
9804 matched
= 1; /* Do this section. */
9807 sectdata
= (gdb_byte
*) xmalloc (size
);
9808 old_chain
= make_cleanup (xfree
, sectdata
);
9809 bfd_get_section_contents (exec_bfd
, s
, sectdata
, 0, size
);
9811 res
= target_verify_memory (sectdata
, lma
, size
);
9814 error (_("target memory fault, section %s, range %s -- %s"), sectname
,
9815 paddress (target_gdbarch (), lma
),
9816 paddress (target_gdbarch (), lma
+ size
));
9818 printf_filtered ("Section %s, range %s -- %s: ", sectname
,
9819 paddress (target_gdbarch (), lma
),
9820 paddress (target_gdbarch (), lma
+ size
));
9822 printf_filtered ("matched.\n");
9825 printf_filtered ("MIS-MATCHED!\n");
9829 do_cleanups (old_chain
);
9832 warning (_("One or more sections of the target image does not match\n\
9833 the loaded file\n"));
9834 if (args
&& !matched
)
9835 printf_filtered (_("No loaded section named '%s'.\n"), args
);
9838 /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET
9839 into remote target. The number of bytes written to the remote
9840 target is returned, or -1 for error. */
9842 static enum target_xfer_status
9843 remote_write_qxfer (struct target_ops
*ops
, const char *object_name
,
9844 const char *annex
, const gdb_byte
*writebuf
,
9845 ULONGEST offset
, LONGEST len
, ULONGEST
*xfered_len
,
9846 struct packet_config
*packet
)
9850 struct remote_state
*rs
= get_remote_state ();
9851 int max_size
= get_memory_write_packet_size ();
9853 if (packet
->support
== PACKET_DISABLE
)
9854 return TARGET_XFER_E_IO
;
9856 /* Insert header. */
9857 i
= snprintf (rs
->buf
, max_size
,
9858 "qXfer:%s:write:%s:%s:",
9859 object_name
, annex
? annex
: "",
9860 phex_nz (offset
, sizeof offset
));
9861 max_size
-= (i
+ 1);
9863 /* Escape as much data as fits into rs->buf. */
9864 buf_len
= remote_escape_output
9865 (writebuf
, len
, 1, (gdb_byte
*) rs
->buf
+ i
, &max_size
, max_size
);
9867 if (putpkt_binary (rs
->buf
, i
+ buf_len
) < 0
9868 || getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) < 0
9869 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
9870 return TARGET_XFER_E_IO
;
9872 unpack_varlen_hex (rs
->buf
, &n
);
9875 return TARGET_XFER_OK
;
9878 /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet.
9879 Data at OFFSET, of up to LEN bytes, is read into READBUF; the
9880 number of bytes read is returned, or 0 for EOF, or -1 for error.
9881 The number of bytes read may be less than LEN without indicating an
9882 EOF. PACKET is checked and updated to indicate whether the remote
9883 target supports this object. */
9885 static enum target_xfer_status
9886 remote_read_qxfer (struct target_ops
*ops
, const char *object_name
,
9888 gdb_byte
*readbuf
, ULONGEST offset
, LONGEST len
,
9889 ULONGEST
*xfered_len
,
9890 struct packet_config
*packet
)
9892 struct remote_state
*rs
= get_remote_state ();
9893 LONGEST i
, n
, packet_len
;
9895 if (packet
->support
== PACKET_DISABLE
)
9896 return TARGET_XFER_E_IO
;
9898 /* Check whether we've cached an end-of-object packet that matches
9900 if (rs
->finished_object
)
9902 if (strcmp (object_name
, rs
->finished_object
) == 0
9903 && strcmp (annex
? annex
: "", rs
->finished_annex
) == 0
9904 && offset
== rs
->finished_offset
)
9905 return TARGET_XFER_EOF
;
9908 /* Otherwise, we're now reading something different. Discard
9910 xfree (rs
->finished_object
);
9911 xfree (rs
->finished_annex
);
9912 rs
->finished_object
= NULL
;
9913 rs
->finished_annex
= NULL
;
9916 /* Request only enough to fit in a single packet. The actual data
9917 may not, since we don't know how much of it will need to be escaped;
9918 the target is free to respond with slightly less data. We subtract
9919 five to account for the response type and the protocol frame. */
9920 n
= min (get_remote_packet_size () - 5, len
);
9921 snprintf (rs
->buf
, get_remote_packet_size () - 4, "qXfer:%s:read:%s:%s,%s",
9922 object_name
, annex
? annex
: "",
9923 phex_nz (offset
, sizeof offset
),
9924 phex_nz (n
, sizeof n
));
9925 i
= putpkt (rs
->buf
);
9927 return TARGET_XFER_E_IO
;
9930 packet_len
= getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0);
9931 if (packet_len
< 0 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
9932 return TARGET_XFER_E_IO
;
9934 if (rs
->buf
[0] != 'l' && rs
->buf
[0] != 'm')
9935 error (_("Unknown remote qXfer reply: %s"), rs
->buf
);
9937 /* 'm' means there is (or at least might be) more data after this
9938 batch. That does not make sense unless there's at least one byte
9939 of data in this reply. */
9940 if (rs
->buf
[0] == 'm' && packet_len
== 1)
9941 error (_("Remote qXfer reply contained no data."));
9943 /* Got some data. */
9944 i
= remote_unescape_input ((gdb_byte
*) rs
->buf
+ 1,
9945 packet_len
- 1, readbuf
, n
);
9947 /* 'l' is an EOF marker, possibly including a final block of data,
9948 or possibly empty. If we have the final block of a non-empty
9949 object, record this fact to bypass a subsequent partial read. */
9950 if (rs
->buf
[0] == 'l' && offset
+ i
> 0)
9952 rs
->finished_object
= xstrdup (object_name
);
9953 rs
->finished_annex
= xstrdup (annex
? annex
: "");
9954 rs
->finished_offset
= offset
+ i
;
9958 return TARGET_XFER_EOF
;
9962 return TARGET_XFER_OK
;
9966 static enum target_xfer_status
9967 remote_xfer_partial (struct target_ops
*ops
, enum target_object object
,
9968 const char *annex
, gdb_byte
*readbuf
,
9969 const gdb_byte
*writebuf
, ULONGEST offset
, ULONGEST len
,
9970 ULONGEST
*xfered_len
)
9972 struct remote_state
*rs
;
9976 int unit_size
= gdbarch_addressable_memory_unit_size (target_gdbarch ());
9978 set_remote_traceframe ();
9979 set_general_thread (inferior_ptid
);
9981 rs
= get_remote_state ();
9983 /* Handle memory using the standard memory routines. */
9984 if (object
== TARGET_OBJECT_MEMORY
)
9986 /* If the remote target is connected but not running, we should
9987 pass this request down to a lower stratum (e.g. the executable
9989 if (!target_has_execution
)
9990 return TARGET_XFER_EOF
;
9992 if (writebuf
!= NULL
)
9993 return remote_write_bytes (offset
, writebuf
, len
, unit_size
,
9996 return remote_read_bytes (ops
, offset
, readbuf
, len
, unit_size
,
10000 /* Handle SPU memory using qxfer packets. */
10001 if (object
== TARGET_OBJECT_SPU
)
10004 return remote_read_qxfer (ops
, "spu", annex
, readbuf
, offset
, len
,
10005 xfered_len
, &remote_protocol_packets
10006 [PACKET_qXfer_spu_read
]);
10008 return remote_write_qxfer (ops
, "spu", annex
, writebuf
, offset
, len
,
10009 xfered_len
, &remote_protocol_packets
10010 [PACKET_qXfer_spu_write
]);
10013 /* Handle extra signal info using qxfer packets. */
10014 if (object
== TARGET_OBJECT_SIGNAL_INFO
)
10017 return remote_read_qxfer (ops
, "siginfo", annex
, readbuf
, offset
, len
,
10018 xfered_len
, &remote_protocol_packets
10019 [PACKET_qXfer_siginfo_read
]);
10021 return remote_write_qxfer (ops
, "siginfo", annex
,
10022 writebuf
, offset
, len
, xfered_len
,
10023 &remote_protocol_packets
10024 [PACKET_qXfer_siginfo_write
]);
10027 if (object
== TARGET_OBJECT_STATIC_TRACE_DATA
)
10030 return remote_read_qxfer (ops
, "statictrace", annex
,
10031 readbuf
, offset
, len
, xfered_len
,
10032 &remote_protocol_packets
10033 [PACKET_qXfer_statictrace_read
]);
10035 return TARGET_XFER_E_IO
;
10038 /* Only handle flash writes. */
10039 if (writebuf
!= NULL
)
10043 case TARGET_OBJECT_FLASH
:
10044 return remote_flash_write (ops
, offset
, len
, xfered_len
,
10048 return TARGET_XFER_E_IO
;
10052 /* Map pre-existing objects onto letters. DO NOT do this for new
10053 objects!!! Instead specify new query packets. */
10056 case TARGET_OBJECT_AVR
:
10060 case TARGET_OBJECT_AUXV
:
10061 gdb_assert (annex
== NULL
);
10062 return remote_read_qxfer (ops
, "auxv", annex
, readbuf
, offset
, len
,
10064 &remote_protocol_packets
[PACKET_qXfer_auxv
]);
10066 case TARGET_OBJECT_AVAILABLE_FEATURES
:
10067 return remote_read_qxfer
10068 (ops
, "features", annex
, readbuf
, offset
, len
, xfered_len
,
10069 &remote_protocol_packets
[PACKET_qXfer_features
]);
10071 case TARGET_OBJECT_LIBRARIES
:
10072 return remote_read_qxfer
10073 (ops
, "libraries", annex
, readbuf
, offset
, len
, xfered_len
,
10074 &remote_protocol_packets
[PACKET_qXfer_libraries
]);
10076 case TARGET_OBJECT_LIBRARIES_SVR4
:
10077 return remote_read_qxfer
10078 (ops
, "libraries-svr4", annex
, readbuf
, offset
, len
, xfered_len
,
10079 &remote_protocol_packets
[PACKET_qXfer_libraries_svr4
]);
10081 case TARGET_OBJECT_MEMORY_MAP
:
10082 gdb_assert (annex
== NULL
);
10083 return remote_read_qxfer (ops
, "memory-map", annex
, readbuf
, offset
, len
,
10085 &remote_protocol_packets
[PACKET_qXfer_memory_map
]);
10087 case TARGET_OBJECT_OSDATA
:
10088 /* Should only get here if we're connected. */
10089 gdb_assert (rs
->remote_desc
);
10090 return remote_read_qxfer
10091 (ops
, "osdata", annex
, readbuf
, offset
, len
, xfered_len
,
10092 &remote_protocol_packets
[PACKET_qXfer_osdata
]);
10094 case TARGET_OBJECT_THREADS
:
10095 gdb_assert (annex
== NULL
);
10096 return remote_read_qxfer (ops
, "threads", annex
, readbuf
, offset
, len
,
10098 &remote_protocol_packets
[PACKET_qXfer_threads
]);
10100 case TARGET_OBJECT_TRACEFRAME_INFO
:
10101 gdb_assert (annex
== NULL
);
10102 return remote_read_qxfer
10103 (ops
, "traceframe-info", annex
, readbuf
, offset
, len
, xfered_len
,
10104 &remote_protocol_packets
[PACKET_qXfer_traceframe_info
]);
10106 case TARGET_OBJECT_FDPIC
:
10107 return remote_read_qxfer (ops
, "fdpic", annex
, readbuf
, offset
, len
,
10109 &remote_protocol_packets
[PACKET_qXfer_fdpic
]);
10111 case TARGET_OBJECT_OPENVMS_UIB
:
10112 return remote_read_qxfer (ops
, "uib", annex
, readbuf
, offset
, len
,
10114 &remote_protocol_packets
[PACKET_qXfer_uib
]);
10116 case TARGET_OBJECT_BTRACE
:
10117 return remote_read_qxfer (ops
, "btrace", annex
, readbuf
, offset
, len
,
10119 &remote_protocol_packets
[PACKET_qXfer_btrace
]);
10121 case TARGET_OBJECT_BTRACE_CONF
:
10122 return remote_read_qxfer (ops
, "btrace-conf", annex
, readbuf
, offset
,
10124 &remote_protocol_packets
[PACKET_qXfer_btrace_conf
]);
10126 case TARGET_OBJECT_EXEC_FILE
:
10127 return remote_read_qxfer (ops
, "exec-file", annex
, readbuf
, offset
,
10129 &remote_protocol_packets
[PACKET_qXfer_exec_file
]);
10132 return TARGET_XFER_E_IO
;
10135 /* Minimum outbuf size is get_remote_packet_size (). If LEN is not
10136 large enough let the caller deal with it. */
10137 if (len
< get_remote_packet_size ())
10138 return TARGET_XFER_E_IO
;
10139 len
= get_remote_packet_size ();
10141 /* Except for querying the minimum buffer size, target must be open. */
10142 if (!rs
->remote_desc
)
10143 error (_("remote query is only available after target open"));
10145 gdb_assert (annex
!= NULL
);
10146 gdb_assert (readbuf
!= NULL
);
10150 *p2
++ = query_type
;
10152 /* We used one buffer char for the remote protocol q command and
10153 another for the query type. As the remote protocol encapsulation
10154 uses 4 chars plus one extra in case we are debugging
10155 (remote_debug), we have PBUFZIZ - 7 left to pack the query
10158 while (annex
[i
] && (i
< (get_remote_packet_size () - 8)))
10160 /* Bad caller may have sent forbidden characters. */
10161 gdb_assert (isprint (annex
[i
]) && annex
[i
] != '$' && annex
[i
] != '#');
10166 gdb_assert (annex
[i
] == '\0');
10168 i
= putpkt (rs
->buf
);
10170 return TARGET_XFER_E_IO
;
10172 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
10173 strcpy ((char *) readbuf
, rs
->buf
);
10175 *xfered_len
= strlen ((char *) readbuf
);
10176 return TARGET_XFER_OK
;
10180 remote_search_memory (struct target_ops
* ops
,
10181 CORE_ADDR start_addr
, ULONGEST search_space_len
,
10182 const gdb_byte
*pattern
, ULONGEST pattern_len
,
10183 CORE_ADDR
*found_addrp
)
10185 int addr_size
= gdbarch_addr_bit (target_gdbarch ()) / 8;
10186 struct remote_state
*rs
= get_remote_state ();
10187 int max_size
= get_memory_write_packet_size ();
10188 struct packet_config
*packet
=
10189 &remote_protocol_packets
[PACKET_qSearch_memory
];
10190 /* Number of packet bytes used to encode the pattern;
10191 this could be more than PATTERN_LEN due to escape characters. */
10192 int escaped_pattern_len
;
10193 /* Amount of pattern that was encodable in the packet. */
10194 int used_pattern_len
;
10197 ULONGEST found_addr
;
10199 /* Don't go to the target if we don't have to.
10200 This is done before checking packet->support to avoid the possibility that
10201 a success for this edge case means the facility works in general. */
10202 if (pattern_len
> search_space_len
)
10204 if (pattern_len
== 0)
10206 *found_addrp
= start_addr
;
10210 /* If we already know the packet isn't supported, fall back to the simple
10211 way of searching memory. */
10213 if (packet_config_support (packet
) == PACKET_DISABLE
)
10215 /* Target doesn't provided special support, fall back and use the
10216 standard support (copy memory and do the search here). */
10217 return simple_search_memory (ops
, start_addr
, search_space_len
,
10218 pattern
, pattern_len
, found_addrp
);
10221 /* Make sure the remote is pointing at the right process. */
10222 set_general_process ();
10224 /* Insert header. */
10225 i
= snprintf (rs
->buf
, max_size
,
10226 "qSearch:memory:%s;%s;",
10227 phex_nz (start_addr
, addr_size
),
10228 phex_nz (search_space_len
, sizeof (search_space_len
)));
10229 max_size
-= (i
+ 1);
10231 /* Escape as much data as fits into rs->buf. */
10232 escaped_pattern_len
=
10233 remote_escape_output (pattern
, pattern_len
, 1, (gdb_byte
*) rs
->buf
+ i
,
10234 &used_pattern_len
, max_size
);
10236 /* Bail if the pattern is too large. */
10237 if (used_pattern_len
!= pattern_len
)
10238 error (_("Pattern is too large to transmit to remote target."));
10240 if (putpkt_binary (rs
->buf
, i
+ escaped_pattern_len
) < 0
10241 || getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) < 0
10242 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
10244 /* The request may not have worked because the command is not
10245 supported. If so, fall back to the simple way. */
10246 if (packet
->support
== PACKET_DISABLE
)
10248 return simple_search_memory (ops
, start_addr
, search_space_len
,
10249 pattern
, pattern_len
, found_addrp
);
10254 if (rs
->buf
[0] == '0')
10256 else if (rs
->buf
[0] == '1')
10259 if (rs
->buf
[1] != ',')
10260 error (_("Unknown qSearch:memory reply: %s"), rs
->buf
);
10261 unpack_varlen_hex (rs
->buf
+ 2, &found_addr
);
10262 *found_addrp
= found_addr
;
10265 error (_("Unknown qSearch:memory reply: %s"), rs
->buf
);
10271 remote_rcmd (struct target_ops
*self
, const char *command
,
10272 struct ui_file
*outbuf
)
10274 struct remote_state
*rs
= get_remote_state ();
10277 if (!rs
->remote_desc
)
10278 error (_("remote rcmd is only available after target open"));
10280 /* Send a NULL command across as an empty command. */
10281 if (command
== NULL
)
10284 /* The query prefix. */
10285 strcpy (rs
->buf
, "qRcmd,");
10286 p
= strchr (rs
->buf
, '\0');
10288 if ((strlen (rs
->buf
) + strlen (command
) * 2 + 8/*misc*/)
10289 > get_remote_packet_size ())
10290 error (_("\"monitor\" command ``%s'' is too long."), command
);
10292 /* Encode the actual command. */
10293 bin2hex ((const gdb_byte
*) command
, p
, strlen (command
));
10295 if (putpkt (rs
->buf
) < 0)
10296 error (_("Communication problem with target."));
10298 /* get/display the response */
10303 /* XXX - see also remote_get_noisy_reply(). */
10304 QUIT
; /* Allow user to bail out with ^C. */
10306 if (getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) == -1)
10308 /* Timeout. Continue to (try to) read responses.
10309 This is better than stopping with an error, assuming the stub
10310 is still executing the (long) monitor command.
10311 If needed, the user can interrupt gdb using C-c, obtaining
10312 an effect similar to stop on timeout. */
10316 if (buf
[0] == '\0')
10317 error (_("Target does not support this command."));
10318 if (buf
[0] == 'O' && buf
[1] != 'K')
10320 remote_console_output (buf
+ 1); /* 'O' message from stub. */
10323 if (strcmp (buf
, "OK") == 0)
10325 if (strlen (buf
) == 3 && buf
[0] == 'E'
10326 && isdigit (buf
[1]) && isdigit (buf
[2]))
10328 error (_("Protocol error with Rcmd"));
10330 for (p
= buf
; p
[0] != '\0' && p
[1] != '\0'; p
+= 2)
10332 char c
= (fromhex (p
[0]) << 4) + fromhex (p
[1]);
10334 fputc_unfiltered (c
, outbuf
);
10340 static VEC(mem_region_s
) *
10341 remote_memory_map (struct target_ops
*ops
)
10343 VEC(mem_region_s
) *result
= NULL
;
10344 char *text
= target_read_stralloc (¤t_target
,
10345 TARGET_OBJECT_MEMORY_MAP
, NULL
);
10349 struct cleanup
*back_to
= make_cleanup (xfree
, text
);
10351 result
= parse_memory_map (text
);
10352 do_cleanups (back_to
);
10359 packet_command (char *args
, int from_tty
)
10361 struct remote_state
*rs
= get_remote_state ();
10363 if (!rs
->remote_desc
)
10364 error (_("command can only be used with remote target"));
10367 error (_("remote-packet command requires packet text as argument"));
10369 puts_filtered ("sending: ");
10370 print_packet (args
);
10371 puts_filtered ("\n");
10374 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
10375 puts_filtered ("received: ");
10376 print_packet (rs
->buf
);
10377 puts_filtered ("\n");
10381 /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */
10383 static void display_thread_info (struct gdb_ext_thread_info
*info
);
10385 static void threadset_test_cmd (char *cmd
, int tty
);
10387 static void threadalive_test (char *cmd
, int tty
);
10389 static void threadlist_test_cmd (char *cmd
, int tty
);
10391 int get_and_display_threadinfo (threadref
*ref
);
10393 static void threadinfo_test_cmd (char *cmd
, int tty
);
10395 static int thread_display_step (threadref
*ref
, void *context
);
10397 static void threadlist_update_test_cmd (char *cmd
, int tty
);
10399 static void init_remote_threadtests (void);
10401 #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */
10404 threadset_test_cmd (char *cmd
, int tty
)
10406 int sample_thread
= SAMPLE_THREAD
;
10408 printf_filtered (_("Remote threadset test\n"));
10409 set_general_thread (sample_thread
);
10414 threadalive_test (char *cmd
, int tty
)
10416 int sample_thread
= SAMPLE_THREAD
;
10417 int pid
= ptid_get_pid (inferior_ptid
);
10418 ptid_t ptid
= ptid_build (pid
, sample_thread
, 0);
10420 if (remote_thread_alive (ptid
))
10421 printf_filtered ("PASS: Thread alive test\n");
10423 printf_filtered ("FAIL: Thread alive test\n");
10426 void output_threadid (char *title
, threadref
*ref
);
10429 output_threadid (char *title
, threadref
*ref
)
10433 pack_threadid (&hexid
[0], ref
); /* Convert threead id into hex. */
10435 printf_filtered ("%s %s\n", title
, (&hexid
[0]));
10439 threadlist_test_cmd (char *cmd
, int tty
)
10442 threadref nextthread
;
10443 int done
, result_count
;
10444 threadref threadlist
[3];
10446 printf_filtered ("Remote Threadlist test\n");
10447 if (!remote_get_threadlist (startflag
, &nextthread
, 3, &done
,
10448 &result_count
, &threadlist
[0]))
10449 printf_filtered ("FAIL: threadlist test\n");
10452 threadref
*scan
= threadlist
;
10453 threadref
*limit
= scan
+ result_count
;
10455 while (scan
< limit
)
10456 output_threadid (" thread ", scan
++);
10461 display_thread_info (struct gdb_ext_thread_info
*info
)
10463 output_threadid ("Threadid: ", &info
->threadid
);
10464 printf_filtered ("Name: %s\n ", info
->shortname
);
10465 printf_filtered ("State: %s\n", info
->display
);
10466 printf_filtered ("other: %s\n\n", info
->more_display
);
10470 get_and_display_threadinfo (threadref
*ref
)
10474 struct gdb_ext_thread_info threadinfo
;
10476 set
= TAG_THREADID
| TAG_EXISTS
| TAG_THREADNAME
10477 | TAG_MOREDISPLAY
| TAG_DISPLAY
;
10478 if (0 != (result
= remote_get_threadinfo (ref
, set
, &threadinfo
)))
10479 display_thread_info (&threadinfo
);
10484 threadinfo_test_cmd (char *cmd
, int tty
)
10486 int athread
= SAMPLE_THREAD
;
10490 int_to_threadref (&thread
, athread
);
10491 printf_filtered ("Remote Threadinfo test\n");
10492 if (!get_and_display_threadinfo (&thread
))
10493 printf_filtered ("FAIL cannot get thread info\n");
10497 thread_display_step (threadref
*ref
, void *context
)
10499 /* output_threadid(" threadstep ",ref); *//* simple test */
10500 return get_and_display_threadinfo (ref
);
10504 threadlist_update_test_cmd (char *cmd
, int tty
)
10506 printf_filtered ("Remote Threadlist update test\n");
10507 remote_threadlist_iterator (thread_display_step
, 0, CRAZY_MAX_THREADS
);
10511 init_remote_threadtests (void)
10513 add_com ("tlist", class_obscure
, threadlist_test_cmd
,
10514 _("Fetch and print the remote list of "
10515 "thread identifiers, one pkt only"));
10516 add_com ("tinfo", class_obscure
, threadinfo_test_cmd
,
10517 _("Fetch and display info about one thread"));
10518 add_com ("tset", class_obscure
, threadset_test_cmd
,
10519 _("Test setting to a different thread"));
10520 add_com ("tupd", class_obscure
, threadlist_update_test_cmd
,
10521 _("Iterate through updating all remote thread info"));
10522 add_com ("talive", class_obscure
, threadalive_test
,
10523 _(" Remote thread alive test "));
10528 /* Convert a thread ID to a string. Returns the string in a static
10532 remote_pid_to_str (struct target_ops
*ops
, ptid_t ptid
)
10534 static char buf
[64];
10535 struct remote_state
*rs
= get_remote_state ();
10537 if (ptid_equal (ptid
, null_ptid
))
10538 return normal_pid_to_str (ptid
);
10539 else if (ptid_is_pid (ptid
))
10541 /* Printing an inferior target id. */
10543 /* When multi-process extensions are off, there's no way in the
10544 remote protocol to know the remote process id, if there's any
10545 at all. There's one exception --- when we're connected with
10546 target extended-remote, and we manually attached to a process
10547 with "attach PID". We don't record anywhere a flag that
10548 allows us to distinguish that case from the case of
10549 connecting with extended-remote and the stub already being
10550 attached to a process, and reporting yes to qAttached, hence
10551 no smart special casing here. */
10552 if (!remote_multi_process_p (rs
))
10554 xsnprintf (buf
, sizeof buf
, "Remote target");
10558 return normal_pid_to_str (ptid
);
10562 if (ptid_equal (magic_null_ptid
, ptid
))
10563 xsnprintf (buf
, sizeof buf
, "Thread <main>");
10564 else if (remote_multi_process_p (rs
))
10565 if (ptid_get_lwp (ptid
) == 0)
10566 return normal_pid_to_str (ptid
);
10568 xsnprintf (buf
, sizeof buf
, "Thread %d.%ld",
10569 ptid_get_pid (ptid
), ptid_get_lwp (ptid
));
10571 xsnprintf (buf
, sizeof buf
, "Thread %ld",
10572 ptid_get_lwp (ptid
));
10577 /* Get the address of the thread local variable in OBJFILE which is
10578 stored at OFFSET within the thread local storage for thread PTID. */
10581 remote_get_thread_local_address (struct target_ops
*ops
,
10582 ptid_t ptid
, CORE_ADDR lm
, CORE_ADDR offset
)
10584 if (packet_support (PACKET_qGetTLSAddr
) != PACKET_DISABLE
)
10586 struct remote_state
*rs
= get_remote_state ();
10588 char *endp
= rs
->buf
+ get_remote_packet_size ();
10589 enum packet_result result
;
10591 strcpy (p
, "qGetTLSAddr:");
10593 p
= write_ptid (p
, endp
, ptid
);
10595 p
+= hexnumstr (p
, offset
);
10597 p
+= hexnumstr (p
, lm
);
10601 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
10602 result
= packet_ok (rs
->buf
,
10603 &remote_protocol_packets
[PACKET_qGetTLSAddr
]);
10604 if (result
== PACKET_OK
)
10608 unpack_varlen_hex (rs
->buf
, &result
);
10611 else if (result
== PACKET_UNKNOWN
)
10612 throw_error (TLS_GENERIC_ERROR
,
10613 _("Remote target doesn't support qGetTLSAddr packet"));
10615 throw_error (TLS_GENERIC_ERROR
,
10616 _("Remote target failed to process qGetTLSAddr request"));
10619 throw_error (TLS_GENERIC_ERROR
,
10620 _("TLS not supported or disabled on this target"));
10625 /* Provide thread local base, i.e. Thread Information Block address.
10626 Returns 1 if ptid is found and thread_local_base is non zero. */
10629 remote_get_tib_address (struct target_ops
*self
, ptid_t ptid
, CORE_ADDR
*addr
)
10631 if (packet_support (PACKET_qGetTIBAddr
) != PACKET_DISABLE
)
10633 struct remote_state
*rs
= get_remote_state ();
10635 char *endp
= rs
->buf
+ get_remote_packet_size ();
10636 enum packet_result result
;
10638 strcpy (p
, "qGetTIBAddr:");
10640 p
= write_ptid (p
, endp
, ptid
);
10644 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
10645 result
= packet_ok (rs
->buf
,
10646 &remote_protocol_packets
[PACKET_qGetTIBAddr
]);
10647 if (result
== PACKET_OK
)
10651 unpack_varlen_hex (rs
->buf
, &result
);
10653 *addr
= (CORE_ADDR
) result
;
10656 else if (result
== PACKET_UNKNOWN
)
10657 error (_("Remote target doesn't support qGetTIBAddr packet"));
10659 error (_("Remote target failed to process qGetTIBAddr request"));
10662 error (_("qGetTIBAddr not supported or disabled on this target"));
10667 /* Support for inferring a target description based on the current
10668 architecture and the size of a 'g' packet. While the 'g' packet
10669 can have any size (since optional registers can be left off the
10670 end), some sizes are easily recognizable given knowledge of the
10671 approximate architecture. */
10673 struct remote_g_packet_guess
10676 const struct target_desc
*tdesc
;
10678 typedef struct remote_g_packet_guess remote_g_packet_guess_s
;
10679 DEF_VEC_O(remote_g_packet_guess_s
);
10681 struct remote_g_packet_data
10683 VEC(remote_g_packet_guess_s
) *guesses
;
10686 static struct gdbarch_data
*remote_g_packet_data_handle
;
10689 remote_g_packet_data_init (struct obstack
*obstack
)
10691 return OBSTACK_ZALLOC (obstack
, struct remote_g_packet_data
);
10695 register_remote_g_packet_guess (struct gdbarch
*gdbarch
, int bytes
,
10696 const struct target_desc
*tdesc
)
10698 struct remote_g_packet_data
*data
10699 = ((struct remote_g_packet_data
*)
10700 gdbarch_data (gdbarch
, remote_g_packet_data_handle
));
10701 struct remote_g_packet_guess new_guess
, *guess
;
10704 gdb_assert (tdesc
!= NULL
);
10707 VEC_iterate (remote_g_packet_guess_s
, data
->guesses
, ix
, guess
);
10709 if (guess
->bytes
== bytes
)
10710 internal_error (__FILE__
, __LINE__
,
10711 _("Duplicate g packet description added for size %d"),
10714 new_guess
.bytes
= bytes
;
10715 new_guess
.tdesc
= tdesc
;
10716 VEC_safe_push (remote_g_packet_guess_s
, data
->guesses
, &new_guess
);
10719 /* Return 1 if remote_read_description would do anything on this target
10720 and architecture, 0 otherwise. */
10723 remote_read_description_p (struct target_ops
*target
)
10725 struct remote_g_packet_data
*data
10726 = ((struct remote_g_packet_data
*)
10727 gdbarch_data (target_gdbarch (), remote_g_packet_data_handle
));
10729 if (!VEC_empty (remote_g_packet_guess_s
, data
->guesses
))
10735 static const struct target_desc
*
10736 remote_read_description (struct target_ops
*target
)
10738 struct remote_g_packet_data
*data
10739 = ((struct remote_g_packet_data
*)
10740 gdbarch_data (target_gdbarch (), remote_g_packet_data_handle
));
10742 /* Do not try this during initial connection, when we do not know
10743 whether there is a running but stopped thread. */
10744 if (!target_has_execution
|| ptid_equal (inferior_ptid
, null_ptid
))
10745 return target
->beneath
->to_read_description (target
->beneath
);
10747 if (!VEC_empty (remote_g_packet_guess_s
, data
->guesses
))
10749 struct remote_g_packet_guess
*guess
;
10751 int bytes
= send_g_packet ();
10754 VEC_iterate (remote_g_packet_guess_s
, data
->guesses
, ix
, guess
);
10756 if (guess
->bytes
== bytes
)
10757 return guess
->tdesc
;
10759 /* We discard the g packet. A minor optimization would be to
10760 hold on to it, and fill the register cache once we have selected
10761 an architecture, but it's too tricky to do safely. */
10764 return target
->beneath
->to_read_description (target
->beneath
);
10767 /* Remote file transfer support. This is host-initiated I/O, not
10768 target-initiated; for target-initiated, see remote-fileio.c. */
10770 /* If *LEFT is at least the length of STRING, copy STRING to
10771 *BUFFER, update *BUFFER to point to the new end of the buffer, and
10772 decrease *LEFT. Otherwise raise an error. */
10775 remote_buffer_add_string (char **buffer
, int *left
, char *string
)
10777 int len
= strlen (string
);
10780 error (_("Packet too long for target."));
10782 memcpy (*buffer
, string
, len
);
10786 /* NUL-terminate the buffer as a convenience, if there is
10792 /* If *LEFT is large enough, hex encode LEN bytes from BYTES into
10793 *BUFFER, update *BUFFER to point to the new end of the buffer, and
10794 decrease *LEFT. Otherwise raise an error. */
10797 remote_buffer_add_bytes (char **buffer
, int *left
, const gdb_byte
*bytes
,
10800 if (2 * len
> *left
)
10801 error (_("Packet too long for target."));
10803 bin2hex (bytes
, *buffer
, len
);
10804 *buffer
+= 2 * len
;
10807 /* NUL-terminate the buffer as a convenience, if there is
10813 /* If *LEFT is large enough, convert VALUE to hex and add it to
10814 *BUFFER, update *BUFFER to point to the new end of the buffer, and
10815 decrease *LEFT. Otherwise raise an error. */
10818 remote_buffer_add_int (char **buffer
, int *left
, ULONGEST value
)
10820 int len
= hexnumlen (value
);
10823 error (_("Packet too long for target."));
10825 hexnumstr (*buffer
, value
);
10829 /* NUL-terminate the buffer as a convenience, if there is
10835 /* Parse an I/O result packet from BUFFER. Set RETCODE to the return
10836 value, *REMOTE_ERRNO to the remote error number or zero if none
10837 was included, and *ATTACHMENT to point to the start of the annex
10838 if any. The length of the packet isn't needed here; there may
10839 be NUL bytes in BUFFER, but they will be after *ATTACHMENT.
10841 Return 0 if the packet could be parsed, -1 if it could not. If
10842 -1 is returned, the other variables may not be initialized. */
10845 remote_hostio_parse_result (char *buffer
, int *retcode
,
10846 int *remote_errno
, char **attachment
)
10851 *attachment
= NULL
;
10853 if (buffer
[0] != 'F')
10857 *retcode
= strtol (&buffer
[1], &p
, 16);
10858 if (errno
!= 0 || p
== &buffer
[1])
10861 /* Check for ",errno". */
10865 *remote_errno
= strtol (p
+ 1, &p2
, 16);
10866 if (errno
!= 0 || p
+ 1 == p2
)
10871 /* Check for ";attachment". If there is no attachment, the
10872 packet should end here. */
10875 *attachment
= p
+ 1;
10878 else if (*p
== '\0')
10884 /* Send a prepared I/O packet to the target and read its response.
10885 The prepared packet is in the global RS->BUF before this function
10886 is called, and the answer is there when we return.
10888 COMMAND_BYTES is the length of the request to send, which may include
10889 binary data. WHICH_PACKET is the packet configuration to check
10890 before attempting a packet. If an error occurs, *REMOTE_ERRNO
10891 is set to the error number and -1 is returned. Otherwise the value
10892 returned by the function is returned.
10894 ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an
10895 attachment is expected; an error will be reported if there's a
10896 mismatch. If one is found, *ATTACHMENT will be set to point into
10897 the packet buffer and *ATTACHMENT_LEN will be set to the
10898 attachment's length. */
10901 remote_hostio_send_command (int command_bytes
, int which_packet
,
10902 int *remote_errno
, char **attachment
,
10903 int *attachment_len
)
10905 struct remote_state
*rs
= get_remote_state ();
10906 int ret
, bytes_read
;
10907 char *attachment_tmp
;
10909 if (!rs
->remote_desc
10910 || packet_support (which_packet
) == PACKET_DISABLE
)
10912 *remote_errno
= FILEIO_ENOSYS
;
10916 putpkt_binary (rs
->buf
, command_bytes
);
10917 bytes_read
= getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0);
10919 /* If it timed out, something is wrong. Don't try to parse the
10921 if (bytes_read
< 0)
10923 *remote_errno
= FILEIO_EINVAL
;
10927 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[which_packet
]))
10930 *remote_errno
= FILEIO_EINVAL
;
10932 case PACKET_UNKNOWN
:
10933 *remote_errno
= FILEIO_ENOSYS
;
10939 if (remote_hostio_parse_result (rs
->buf
, &ret
, remote_errno
,
10942 *remote_errno
= FILEIO_EINVAL
;
10946 /* Make sure we saw an attachment if and only if we expected one. */
10947 if ((attachment_tmp
== NULL
&& attachment
!= NULL
)
10948 || (attachment_tmp
!= NULL
&& attachment
== NULL
))
10950 *remote_errno
= FILEIO_EINVAL
;
10954 /* If an attachment was found, it must point into the packet buffer;
10955 work out how many bytes there were. */
10956 if (attachment_tmp
!= NULL
)
10958 *attachment
= attachment_tmp
;
10959 *attachment_len
= bytes_read
- (*attachment
- rs
->buf
);
10965 /* Invalidate the readahead cache. */
10968 readahead_cache_invalidate (void)
10970 struct remote_state
*rs
= get_remote_state ();
10972 rs
->readahead_cache
.fd
= -1;
10975 /* Invalidate the readahead cache if it is holding data for FD. */
10978 readahead_cache_invalidate_fd (int fd
)
10980 struct remote_state
*rs
= get_remote_state ();
10982 if (rs
->readahead_cache
.fd
== fd
)
10983 rs
->readahead_cache
.fd
= -1;
10986 /* Set the filesystem remote_hostio functions that take FILENAME
10987 arguments will use. Return 0 on success, or -1 if an error
10988 occurs (and set *REMOTE_ERRNO). */
10991 remote_hostio_set_filesystem (struct inferior
*inf
, int *remote_errno
)
10993 struct remote_state
*rs
= get_remote_state ();
10994 int required_pid
= (inf
== NULL
|| inf
->fake_pid_p
) ? 0 : inf
->pid
;
10996 int left
= get_remote_packet_size () - 1;
11000 if (packet_support (PACKET_vFile_setfs
) == PACKET_DISABLE
)
11003 if (rs
->fs_pid
!= -1 && required_pid
== rs
->fs_pid
)
11006 remote_buffer_add_string (&p
, &left
, "vFile:setfs:");
11008 xsnprintf (arg
, sizeof (arg
), "%x", required_pid
);
11009 remote_buffer_add_string (&p
, &left
, arg
);
11011 ret
= remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_setfs
,
11012 remote_errno
, NULL
, NULL
);
11014 if (packet_support (PACKET_vFile_setfs
) == PACKET_DISABLE
)
11018 rs
->fs_pid
= required_pid
;
11023 /* Implementation of to_fileio_open. */
11026 remote_hostio_open (struct target_ops
*self
,
11027 struct inferior
*inf
, const char *filename
,
11028 int flags
, int mode
, int warn_if_slow
,
11031 struct remote_state
*rs
= get_remote_state ();
11033 int left
= get_remote_packet_size () - 1;
11037 static int warning_issued
= 0;
11039 printf_unfiltered (_("Reading %s from remote target...\n"),
11042 if (!warning_issued
)
11044 warning (_("File transfers from remote targets can be slow."
11045 " Use \"set sysroot\" to access files locally"
11047 warning_issued
= 1;
11051 if (remote_hostio_set_filesystem (inf
, remote_errno
) != 0)
11054 remote_buffer_add_string (&p
, &left
, "vFile:open:");
11056 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
11057 strlen (filename
));
11058 remote_buffer_add_string (&p
, &left
, ",");
11060 remote_buffer_add_int (&p
, &left
, flags
);
11061 remote_buffer_add_string (&p
, &left
, ",");
11063 remote_buffer_add_int (&p
, &left
, mode
);
11065 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_open
,
11066 remote_errno
, NULL
, NULL
);
11069 /* Implementation of to_fileio_pwrite. */
11072 remote_hostio_pwrite (struct target_ops
*self
,
11073 int fd
, const gdb_byte
*write_buf
, int len
,
11074 ULONGEST offset
, int *remote_errno
)
11076 struct remote_state
*rs
= get_remote_state ();
11078 int left
= get_remote_packet_size ();
11081 readahead_cache_invalidate_fd (fd
);
11083 remote_buffer_add_string (&p
, &left
, "vFile:pwrite:");
11085 remote_buffer_add_int (&p
, &left
, fd
);
11086 remote_buffer_add_string (&p
, &left
, ",");
11088 remote_buffer_add_int (&p
, &left
, offset
);
11089 remote_buffer_add_string (&p
, &left
, ",");
11091 p
+= remote_escape_output (write_buf
, len
, 1, (gdb_byte
*) p
, &out_len
,
11092 get_remote_packet_size () - (p
- rs
->buf
));
11094 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_pwrite
,
11095 remote_errno
, NULL
, NULL
);
11098 /* Helper for the implementation of to_fileio_pread. Read the file
11099 from the remote side with vFile:pread. */
11102 remote_hostio_pread_vFile (struct target_ops
*self
,
11103 int fd
, gdb_byte
*read_buf
, int len
,
11104 ULONGEST offset
, int *remote_errno
)
11106 struct remote_state
*rs
= get_remote_state ();
11109 int left
= get_remote_packet_size ();
11110 int ret
, attachment_len
;
11113 remote_buffer_add_string (&p
, &left
, "vFile:pread:");
11115 remote_buffer_add_int (&p
, &left
, fd
);
11116 remote_buffer_add_string (&p
, &left
, ",");
11118 remote_buffer_add_int (&p
, &left
, len
);
11119 remote_buffer_add_string (&p
, &left
, ",");
11121 remote_buffer_add_int (&p
, &left
, offset
);
11123 ret
= remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_pread
,
11124 remote_errno
, &attachment
,
11130 read_len
= remote_unescape_input ((gdb_byte
*) attachment
, attachment_len
,
11132 if (read_len
!= ret
)
11133 error (_("Read returned %d, but %d bytes."), ret
, (int) read_len
);
11138 /* Serve pread from the readahead cache. Returns number of bytes
11139 read, or 0 if the request can't be served from the cache. */
11142 remote_hostio_pread_from_cache (struct remote_state
*rs
,
11143 int fd
, gdb_byte
*read_buf
, size_t len
,
11146 struct readahead_cache
*cache
= &rs
->readahead_cache
;
11148 if (cache
->fd
== fd
11149 && cache
->offset
<= offset
11150 && offset
< cache
->offset
+ cache
->bufsize
)
11152 ULONGEST max
= cache
->offset
+ cache
->bufsize
;
11154 if (offset
+ len
> max
)
11155 len
= max
- offset
;
11157 memcpy (read_buf
, cache
->buf
+ offset
- cache
->offset
, len
);
11164 /* Implementation of to_fileio_pread. */
11167 remote_hostio_pread (struct target_ops
*self
,
11168 int fd
, gdb_byte
*read_buf
, int len
,
11169 ULONGEST offset
, int *remote_errno
)
11172 struct remote_state
*rs
= get_remote_state ();
11173 struct readahead_cache
*cache
= &rs
->readahead_cache
;
11175 ret
= remote_hostio_pread_from_cache (rs
, fd
, read_buf
, len
, offset
);
11178 cache
->hit_count
++;
11181 fprintf_unfiltered (gdb_stdlog
, "readahead cache hit %s\n",
11182 pulongest (cache
->hit_count
));
11186 cache
->miss_count
++;
11188 fprintf_unfiltered (gdb_stdlog
, "readahead cache miss %s\n",
11189 pulongest (cache
->miss_count
));
11192 cache
->offset
= offset
;
11193 cache
->bufsize
= get_remote_packet_size ();
11194 cache
->buf
= (gdb_byte
*) xrealloc (cache
->buf
, cache
->bufsize
);
11196 ret
= remote_hostio_pread_vFile (self
, cache
->fd
, cache
->buf
, cache
->bufsize
,
11197 cache
->offset
, remote_errno
);
11200 readahead_cache_invalidate_fd (fd
);
11204 cache
->bufsize
= ret
;
11205 return remote_hostio_pread_from_cache (rs
, fd
, read_buf
, len
, offset
);
11208 /* Implementation of to_fileio_close. */
11211 remote_hostio_close (struct target_ops
*self
, int fd
, int *remote_errno
)
11213 struct remote_state
*rs
= get_remote_state ();
11215 int left
= get_remote_packet_size () - 1;
11217 readahead_cache_invalidate_fd (fd
);
11219 remote_buffer_add_string (&p
, &left
, "vFile:close:");
11221 remote_buffer_add_int (&p
, &left
, fd
);
11223 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_close
,
11224 remote_errno
, NULL
, NULL
);
11227 /* Implementation of to_fileio_unlink. */
11230 remote_hostio_unlink (struct target_ops
*self
,
11231 struct inferior
*inf
, const char *filename
,
11234 struct remote_state
*rs
= get_remote_state ();
11236 int left
= get_remote_packet_size () - 1;
11238 if (remote_hostio_set_filesystem (inf
, remote_errno
) != 0)
11241 remote_buffer_add_string (&p
, &left
, "vFile:unlink:");
11243 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
11244 strlen (filename
));
11246 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_unlink
,
11247 remote_errno
, NULL
, NULL
);
11250 /* Implementation of to_fileio_readlink. */
11253 remote_hostio_readlink (struct target_ops
*self
,
11254 struct inferior
*inf
, const char *filename
,
11257 struct remote_state
*rs
= get_remote_state ();
11260 int left
= get_remote_packet_size ();
11261 int len
, attachment_len
;
11265 if (remote_hostio_set_filesystem (inf
, remote_errno
) != 0)
11268 remote_buffer_add_string (&p
, &left
, "vFile:readlink:");
11270 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
11271 strlen (filename
));
11273 len
= remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_readlink
,
11274 remote_errno
, &attachment
,
11280 ret
= (char *) xmalloc (len
+ 1);
11282 read_len
= remote_unescape_input ((gdb_byte
*) attachment
, attachment_len
,
11283 (gdb_byte
*) ret
, len
);
11284 if (read_len
!= len
)
11285 error (_("Readlink returned %d, but %d bytes."), len
, read_len
);
11291 /* Implementation of to_fileio_fstat. */
11294 remote_hostio_fstat (struct target_ops
*self
,
11295 int fd
, struct stat
*st
,
11298 struct remote_state
*rs
= get_remote_state ();
11300 int left
= get_remote_packet_size ();
11301 int attachment_len
, ret
;
11303 struct fio_stat fst
;
11306 remote_buffer_add_string (&p
, &left
, "vFile:fstat:");
11308 remote_buffer_add_int (&p
, &left
, fd
);
11310 ret
= remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_fstat
,
11311 remote_errno
, &attachment
,
11315 if (*remote_errno
!= FILEIO_ENOSYS
)
11318 /* Strictly we should return -1, ENOSYS here, but when
11319 "set sysroot remote:" was implemented in August 2008
11320 BFD's need for a stat function was sidestepped with
11321 this hack. This was not remedied until March 2015
11322 so we retain the previous behavior to avoid breaking
11325 Note that the memset is a March 2015 addition; older
11326 GDBs set st_size *and nothing else* so the structure
11327 would have garbage in all other fields. This might
11328 break something but retaining the previous behavior
11329 here would be just too wrong. */
11331 memset (st
, 0, sizeof (struct stat
));
11332 st
->st_size
= INT_MAX
;
11336 read_len
= remote_unescape_input ((gdb_byte
*) attachment
, attachment_len
,
11337 (gdb_byte
*) &fst
, sizeof (fst
));
11339 if (read_len
!= ret
)
11340 error (_("vFile:fstat returned %d, but %d bytes."), ret
, read_len
);
11342 if (read_len
!= sizeof (fst
))
11343 error (_("vFile:fstat returned %d bytes, but expecting %d."),
11344 read_len
, (int) sizeof (fst
));
11346 remote_fileio_to_host_stat (&fst
, st
);
11351 /* Implementation of to_filesystem_is_local. */
11354 remote_filesystem_is_local (struct target_ops
*self
)
11356 /* Valgrind GDB presents itself as a remote target but works
11357 on the local filesystem: it does not implement remote get
11358 and users are not expected to set a sysroot. To handle
11359 this case we treat the remote filesystem as local if the
11360 sysroot is exactly TARGET_SYSROOT_PREFIX and if the stub
11361 does not support vFile:open. */
11362 if (strcmp (gdb_sysroot
, TARGET_SYSROOT_PREFIX
) == 0)
11364 enum packet_support ps
= packet_support (PACKET_vFile_open
);
11366 if (ps
== PACKET_SUPPORT_UNKNOWN
)
11368 int fd
, remote_errno
;
11370 /* Try opening a file to probe support. The supplied
11371 filename is irrelevant, we only care about whether
11372 the stub recognizes the packet or not. */
11373 fd
= remote_hostio_open (self
, NULL
, "just probing",
11374 FILEIO_O_RDONLY
, 0700, 0,
11378 remote_hostio_close (self
, fd
, &remote_errno
);
11380 ps
= packet_support (PACKET_vFile_open
);
11383 if (ps
== PACKET_DISABLE
)
11385 static int warning_issued
= 0;
11387 if (!warning_issued
)
11389 warning (_("remote target does not support file"
11390 " transfer, attempting to access files"
11391 " from local filesystem."));
11392 warning_issued
= 1;
11403 remote_fileio_errno_to_host (int errnum
)
11409 case FILEIO_ENOENT
:
11417 case FILEIO_EACCES
:
11419 case FILEIO_EFAULT
:
11423 case FILEIO_EEXIST
:
11425 case FILEIO_ENODEV
:
11427 case FILEIO_ENOTDIR
:
11429 case FILEIO_EISDIR
:
11431 case FILEIO_EINVAL
:
11433 case FILEIO_ENFILE
:
11435 case FILEIO_EMFILE
:
11439 case FILEIO_ENOSPC
:
11441 case FILEIO_ESPIPE
:
11445 case FILEIO_ENOSYS
:
11447 case FILEIO_ENAMETOOLONG
:
11448 return ENAMETOOLONG
;
11454 remote_hostio_error (int errnum
)
11456 int host_error
= remote_fileio_errno_to_host (errnum
);
11458 if (host_error
== -1)
11459 error (_("Unknown remote I/O error %d"), errnum
);
11461 error (_("Remote I/O error: %s"), safe_strerror (host_error
));
11465 remote_hostio_close_cleanup (void *opaque
)
11467 int fd
= *(int *) opaque
;
11470 remote_hostio_close (find_target_at (process_stratum
), fd
, &remote_errno
);
11474 remote_file_put (const char *local_file
, const char *remote_file
, int from_tty
)
11476 struct cleanup
*back_to
, *close_cleanup
;
11477 int retcode
, fd
, remote_errno
, bytes
, io_size
;
11480 int bytes_in_buffer
;
11483 struct remote_state
*rs
= get_remote_state ();
11485 if (!rs
->remote_desc
)
11486 error (_("command can only be used with remote target"));
11488 file
= gdb_fopen_cloexec (local_file
, "rb");
11490 perror_with_name (local_file
);
11491 back_to
= make_cleanup_fclose (file
);
11493 fd
= remote_hostio_open (find_target_at (process_stratum
), NULL
,
11494 remote_file
, (FILEIO_O_WRONLY
| FILEIO_O_CREAT
11496 0700, 0, &remote_errno
);
11498 remote_hostio_error (remote_errno
);
11500 /* Send up to this many bytes at once. They won't all fit in the
11501 remote packet limit, so we'll transfer slightly fewer. */
11502 io_size
= get_remote_packet_size ();
11503 buffer
= (gdb_byte
*) xmalloc (io_size
);
11504 make_cleanup (xfree
, buffer
);
11506 close_cleanup
= make_cleanup (remote_hostio_close_cleanup
, &fd
);
11508 bytes_in_buffer
= 0;
11511 while (bytes_in_buffer
|| !saw_eof
)
11515 bytes
= fread (buffer
+ bytes_in_buffer
, 1,
11516 io_size
- bytes_in_buffer
,
11521 error (_("Error reading %s."), local_file
);
11524 /* EOF. Unless there is something still in the
11525 buffer from the last iteration, we are done. */
11527 if (bytes_in_buffer
== 0)
11535 bytes
+= bytes_in_buffer
;
11536 bytes_in_buffer
= 0;
11538 retcode
= remote_hostio_pwrite (find_target_at (process_stratum
),
11540 offset
, &remote_errno
);
11543 remote_hostio_error (remote_errno
);
11544 else if (retcode
== 0)
11545 error (_("Remote write of %d bytes returned 0!"), bytes
);
11546 else if (retcode
< bytes
)
11548 /* Short write. Save the rest of the read data for the next
11550 bytes_in_buffer
= bytes
- retcode
;
11551 memmove (buffer
, buffer
+ retcode
, bytes_in_buffer
);
11557 discard_cleanups (close_cleanup
);
11558 if (remote_hostio_close (find_target_at (process_stratum
), fd
, &remote_errno
))
11559 remote_hostio_error (remote_errno
);
11562 printf_filtered (_("Successfully sent file \"%s\".\n"), local_file
);
11563 do_cleanups (back_to
);
11567 remote_file_get (const char *remote_file
, const char *local_file
, int from_tty
)
11569 struct cleanup
*back_to
, *close_cleanup
;
11570 int fd
, remote_errno
, bytes
, io_size
;
11574 struct remote_state
*rs
= get_remote_state ();
11576 if (!rs
->remote_desc
)
11577 error (_("command can only be used with remote target"));
11579 fd
= remote_hostio_open (find_target_at (process_stratum
), NULL
,
11580 remote_file
, FILEIO_O_RDONLY
, 0, 0,
11583 remote_hostio_error (remote_errno
);
11585 file
= gdb_fopen_cloexec (local_file
, "wb");
11587 perror_with_name (local_file
);
11588 back_to
= make_cleanup_fclose (file
);
11590 /* Send up to this many bytes at once. They won't all fit in the
11591 remote packet limit, so we'll transfer slightly fewer. */
11592 io_size
= get_remote_packet_size ();
11593 buffer
= (gdb_byte
*) xmalloc (io_size
);
11594 make_cleanup (xfree
, buffer
);
11596 close_cleanup
= make_cleanup (remote_hostio_close_cleanup
, &fd
);
11601 bytes
= remote_hostio_pread (find_target_at (process_stratum
),
11602 fd
, buffer
, io_size
, offset
, &remote_errno
);
11604 /* Success, but no bytes, means end-of-file. */
11607 remote_hostio_error (remote_errno
);
11611 bytes
= fwrite (buffer
, 1, bytes
, file
);
11613 perror_with_name (local_file
);
11616 discard_cleanups (close_cleanup
);
11617 if (remote_hostio_close (find_target_at (process_stratum
), fd
, &remote_errno
))
11618 remote_hostio_error (remote_errno
);
11621 printf_filtered (_("Successfully fetched file \"%s\".\n"), remote_file
);
11622 do_cleanups (back_to
);
11626 remote_file_delete (const char *remote_file
, int from_tty
)
11628 int retcode
, remote_errno
;
11629 struct remote_state
*rs
= get_remote_state ();
11631 if (!rs
->remote_desc
)
11632 error (_("command can only be used with remote target"));
11634 retcode
= remote_hostio_unlink (find_target_at (process_stratum
),
11635 NULL
, remote_file
, &remote_errno
);
11637 remote_hostio_error (remote_errno
);
11640 printf_filtered (_("Successfully deleted file \"%s\".\n"), remote_file
);
11644 remote_put_command (char *args
, int from_tty
)
11646 struct cleanup
*back_to
;
11650 error_no_arg (_("file to put"));
11652 argv
= gdb_buildargv (args
);
11653 back_to
= make_cleanup_freeargv (argv
);
11654 if (argv
[0] == NULL
|| argv
[1] == NULL
|| argv
[2] != NULL
)
11655 error (_("Invalid parameters to remote put"));
11657 remote_file_put (argv
[0], argv
[1], from_tty
);
11659 do_cleanups (back_to
);
11663 remote_get_command (char *args
, int from_tty
)
11665 struct cleanup
*back_to
;
11669 error_no_arg (_("file to get"));
11671 argv
= gdb_buildargv (args
);
11672 back_to
= make_cleanup_freeargv (argv
);
11673 if (argv
[0] == NULL
|| argv
[1] == NULL
|| argv
[2] != NULL
)
11674 error (_("Invalid parameters to remote get"));
11676 remote_file_get (argv
[0], argv
[1], from_tty
);
11678 do_cleanups (back_to
);
11682 remote_delete_command (char *args
, int from_tty
)
11684 struct cleanup
*back_to
;
11688 error_no_arg (_("file to delete"));
11690 argv
= gdb_buildargv (args
);
11691 back_to
= make_cleanup_freeargv (argv
);
11692 if (argv
[0] == NULL
|| argv
[1] != NULL
)
11693 error (_("Invalid parameters to remote delete"));
11695 remote_file_delete (argv
[0], from_tty
);
11697 do_cleanups (back_to
);
11701 remote_command (char *args
, int from_tty
)
11703 help_list (remote_cmdlist
, "remote ", all_commands
, gdb_stdout
);
11707 remote_can_execute_reverse (struct target_ops
*self
)
11709 if (packet_support (PACKET_bs
) == PACKET_ENABLE
11710 || packet_support (PACKET_bc
) == PACKET_ENABLE
)
11717 remote_supports_non_stop (struct target_ops
*self
)
11723 remote_supports_disable_randomization (struct target_ops
*self
)
11725 /* Only supported in extended mode. */
11730 remote_supports_multi_process (struct target_ops
*self
)
11732 struct remote_state
*rs
= get_remote_state ();
11734 return remote_multi_process_p (rs
);
11738 remote_supports_cond_tracepoints (void)
11740 return packet_support (PACKET_ConditionalTracepoints
) == PACKET_ENABLE
;
11744 remote_supports_cond_breakpoints (struct target_ops
*self
)
11746 return packet_support (PACKET_ConditionalBreakpoints
) == PACKET_ENABLE
;
11750 remote_supports_fast_tracepoints (void)
11752 return packet_support (PACKET_FastTracepoints
) == PACKET_ENABLE
;
11756 remote_supports_static_tracepoints (void)
11758 return packet_support (PACKET_StaticTracepoints
) == PACKET_ENABLE
;
11762 remote_supports_install_in_trace (void)
11764 return packet_support (PACKET_InstallInTrace
) == PACKET_ENABLE
;
11768 remote_supports_enable_disable_tracepoint (struct target_ops
*self
)
11770 return (packet_support (PACKET_EnableDisableTracepoints_feature
)
11775 remote_supports_string_tracing (struct target_ops
*self
)
11777 return packet_support (PACKET_tracenz_feature
) == PACKET_ENABLE
;
11781 remote_can_run_breakpoint_commands (struct target_ops
*self
)
11783 return packet_support (PACKET_BreakpointCommands
) == PACKET_ENABLE
;
11787 remote_trace_init (struct target_ops
*self
)
11790 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11791 if (strcmp (target_buf
, "OK") != 0)
11792 error (_("Target does not support this command."));
11795 static void free_actions_list (char **actions_list
);
11796 static void free_actions_list_cleanup_wrapper (void *);
11798 free_actions_list_cleanup_wrapper (void *al
)
11800 free_actions_list ((char **) al
);
11804 free_actions_list (char **actions_list
)
11808 if (actions_list
== 0)
11811 for (ndx
= 0; actions_list
[ndx
]; ndx
++)
11812 xfree (actions_list
[ndx
]);
11814 xfree (actions_list
);
11817 /* Recursive routine to walk through command list including loops, and
11818 download packets for each command. */
11821 remote_download_command_source (int num
, ULONGEST addr
,
11822 struct command_line
*cmds
)
11824 struct remote_state
*rs
= get_remote_state ();
11825 struct command_line
*cmd
;
11827 for (cmd
= cmds
; cmd
; cmd
= cmd
->next
)
11829 QUIT
; /* Allow user to bail out with ^C. */
11830 strcpy (rs
->buf
, "QTDPsrc:");
11831 encode_source_string (num
, addr
, "cmd", cmd
->line
,
11832 rs
->buf
+ strlen (rs
->buf
),
11833 rs
->buf_size
- strlen (rs
->buf
));
11835 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11836 if (strcmp (target_buf
, "OK"))
11837 warning (_("Target does not support source download."));
11839 if (cmd
->control_type
== while_control
11840 || cmd
->control_type
== while_stepping_control
)
11842 remote_download_command_source (num
, addr
, *cmd
->body_list
);
11844 QUIT
; /* Allow user to bail out with ^C. */
11845 strcpy (rs
->buf
, "QTDPsrc:");
11846 encode_source_string (num
, addr
, "cmd", "end",
11847 rs
->buf
+ strlen (rs
->buf
),
11848 rs
->buf_size
- strlen (rs
->buf
));
11850 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11851 if (strcmp (target_buf
, "OK"))
11852 warning (_("Target does not support source download."));
11858 remote_download_tracepoint (struct target_ops
*self
, struct bp_location
*loc
)
11860 #define BUF_SIZE 2048
11864 char buf
[BUF_SIZE
];
11865 char **tdp_actions
;
11866 char **stepping_actions
;
11868 struct cleanup
*old_chain
= NULL
;
11869 struct agent_expr
*aexpr
;
11870 struct cleanup
*aexpr_chain
= NULL
;
11872 struct breakpoint
*b
= loc
->owner
;
11873 struct tracepoint
*t
= (struct tracepoint
*) b
;
11875 encode_actions_rsp (loc
, &tdp_actions
, &stepping_actions
);
11876 old_chain
= make_cleanup (free_actions_list_cleanup_wrapper
,
11878 (void) make_cleanup (free_actions_list_cleanup_wrapper
,
11881 tpaddr
= loc
->address
;
11882 sprintf_vma (addrbuf
, tpaddr
);
11883 xsnprintf (buf
, BUF_SIZE
, "QTDP:%x:%s:%c:%lx:%x", b
->number
,
11884 addrbuf
, /* address */
11885 (b
->enable_state
== bp_enabled
? 'E' : 'D'),
11886 t
->step_count
, t
->pass_count
);
11887 /* Fast tracepoints are mostly handled by the target, but we can
11888 tell the target how big of an instruction block should be moved
11890 if (b
->type
== bp_fast_tracepoint
)
11892 /* Only test for support at download time; we may not know
11893 target capabilities at definition time. */
11894 if (remote_supports_fast_tracepoints ())
11896 if (gdbarch_fast_tracepoint_valid_at (loc
->gdbarch
, tpaddr
,
11898 xsnprintf (buf
+ strlen (buf
), BUF_SIZE
- strlen (buf
), ":F%x",
11899 gdb_insn_length (loc
->gdbarch
, tpaddr
));
11901 /* If it passed validation at definition but fails now,
11902 something is very wrong. */
11903 internal_error (__FILE__
, __LINE__
,
11904 _("Fast tracepoint not "
11905 "valid during download"));
11908 /* Fast tracepoints are functionally identical to regular
11909 tracepoints, so don't take lack of support as a reason to
11910 give up on the trace run. */
11911 warning (_("Target does not support fast tracepoints, "
11912 "downloading %d as regular tracepoint"), b
->number
);
11914 else if (b
->type
== bp_static_tracepoint
)
11916 /* Only test for support at download time; we may not know
11917 target capabilities at definition time. */
11918 if (remote_supports_static_tracepoints ())
11920 struct static_tracepoint_marker marker
;
11922 if (target_static_tracepoint_marker_at (tpaddr
, &marker
))
11923 strcat (buf
, ":S");
11925 error (_("Static tracepoint not valid during download"));
11928 /* Fast tracepoints are functionally identical to regular
11929 tracepoints, so don't take lack of support as a reason
11930 to give up on the trace run. */
11931 error (_("Target does not support static tracepoints"));
11933 /* If the tracepoint has a conditional, make it into an agent
11934 expression and append to the definition. */
11937 /* Only test support at download time, we may not know target
11938 capabilities at definition time. */
11939 if (remote_supports_cond_tracepoints ())
11941 aexpr
= gen_eval_for_expr (tpaddr
, loc
->cond
);
11942 aexpr_chain
= make_cleanup_free_agent_expr (aexpr
);
11943 xsnprintf (buf
+ strlen (buf
), BUF_SIZE
- strlen (buf
), ":X%x,",
11945 pkt
= buf
+ strlen (buf
);
11946 for (ndx
= 0; ndx
< aexpr
->len
; ++ndx
)
11947 pkt
= pack_hex_byte (pkt
, aexpr
->buf
[ndx
]);
11949 do_cleanups (aexpr_chain
);
11952 warning (_("Target does not support conditional tracepoints, "
11953 "ignoring tp %d cond"), b
->number
);
11956 if (b
->commands
|| *default_collect
)
11959 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11960 if (strcmp (target_buf
, "OK"))
11961 error (_("Target does not support tracepoints."));
11963 /* do_single_steps (t); */
11966 for (ndx
= 0; tdp_actions
[ndx
]; ndx
++)
11968 QUIT
; /* Allow user to bail out with ^C. */
11969 xsnprintf (buf
, BUF_SIZE
, "QTDP:-%x:%s:%s%c",
11970 b
->number
, addrbuf
, /* address */
11972 ((tdp_actions
[ndx
+ 1] || stepping_actions
)
11975 remote_get_noisy_reply (&target_buf
,
11977 if (strcmp (target_buf
, "OK"))
11978 error (_("Error on target while setting tracepoints."));
11981 if (stepping_actions
)
11983 for (ndx
= 0; stepping_actions
[ndx
]; ndx
++)
11985 QUIT
; /* Allow user to bail out with ^C. */
11986 xsnprintf (buf
, BUF_SIZE
, "QTDP:-%x:%s:%s%s%s",
11987 b
->number
, addrbuf
, /* address */
11988 ((ndx
== 0) ? "S" : ""),
11989 stepping_actions
[ndx
],
11990 (stepping_actions
[ndx
+ 1] ? "-" : ""));
11992 remote_get_noisy_reply (&target_buf
,
11994 if (strcmp (target_buf
, "OK"))
11995 error (_("Error on target while setting tracepoints."));
11999 if (packet_support (PACKET_TracepointSource
) == PACKET_ENABLE
)
12001 if (b
->location
!= NULL
)
12003 strcpy (buf
, "QTDPsrc:");
12004 encode_source_string (b
->number
, loc
->address
, "at",
12005 event_location_to_string (b
->location
),
12006 buf
+ strlen (buf
), 2048 - strlen (buf
));
12008 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
12009 if (strcmp (target_buf
, "OK"))
12010 warning (_("Target does not support source download."));
12012 if (b
->cond_string
)
12014 strcpy (buf
, "QTDPsrc:");
12015 encode_source_string (b
->number
, loc
->address
,
12016 "cond", b
->cond_string
, buf
+ strlen (buf
),
12017 2048 - strlen (buf
));
12019 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
12020 if (strcmp (target_buf
, "OK"))
12021 warning (_("Target does not support source download."));
12023 remote_download_command_source (b
->number
, loc
->address
,
12024 breakpoint_commands (b
));
12027 do_cleanups (old_chain
);
12031 remote_can_download_tracepoint (struct target_ops
*self
)
12033 struct remote_state
*rs
= get_remote_state ();
12034 struct trace_status
*ts
;
12037 /* Don't try to install tracepoints until we've relocated our
12038 symbols, and fetched and merged the target's tracepoint list with
12040 if (rs
->starting_up
)
12043 ts
= current_trace_status ();
12044 status
= remote_get_trace_status (self
, ts
);
12046 if (status
== -1 || !ts
->running_known
|| !ts
->running
)
12049 /* If we are in a tracing experiment, but remote stub doesn't support
12050 installing tracepoint in trace, we have to return. */
12051 if (!remote_supports_install_in_trace ())
12059 remote_download_trace_state_variable (struct target_ops
*self
,
12060 struct trace_state_variable
*tsv
)
12062 struct remote_state
*rs
= get_remote_state ();
12065 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTDV:%x:%s:%x:",
12066 tsv
->number
, phex ((ULONGEST
) tsv
->initial_value
, 8),
12068 p
= rs
->buf
+ strlen (rs
->buf
);
12069 if ((p
- rs
->buf
) + strlen (tsv
->name
) * 2 >= get_remote_packet_size ())
12070 error (_("Trace state variable name too long for tsv definition packet"));
12071 p
+= 2 * bin2hex ((gdb_byte
*) (tsv
->name
), p
, strlen (tsv
->name
));
12074 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
12075 if (*target_buf
== '\0')
12076 error (_("Target does not support this command."));
12077 if (strcmp (target_buf
, "OK") != 0)
12078 error (_("Error on target while downloading trace state variable."));
12082 remote_enable_tracepoint (struct target_ops
*self
,
12083 struct bp_location
*location
)
12085 struct remote_state
*rs
= get_remote_state ();
12088 sprintf_vma (addr_buf
, location
->address
);
12089 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTEnable:%x:%s",
12090 location
->owner
->number
, addr_buf
);
12092 remote_get_noisy_reply (&rs
->buf
, &rs
->buf_size
);
12093 if (*rs
->buf
== '\0')
12094 error (_("Target does not support enabling tracepoints while a trace run is ongoing."));
12095 if (strcmp (rs
->buf
, "OK") != 0)
12096 error (_("Error on target while enabling tracepoint."));
12100 remote_disable_tracepoint (struct target_ops
*self
,
12101 struct bp_location
*location
)
12103 struct remote_state
*rs
= get_remote_state ();
12106 sprintf_vma (addr_buf
, location
->address
);
12107 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTDisable:%x:%s",
12108 location
->owner
->number
, addr_buf
);
12110 remote_get_noisy_reply (&rs
->buf
, &rs
->buf_size
);
12111 if (*rs
->buf
== '\0')
12112 error (_("Target does not support disabling tracepoints while a trace run is ongoing."));
12113 if (strcmp (rs
->buf
, "OK") != 0)
12114 error (_("Error on target while disabling tracepoint."));
12118 remote_trace_set_readonly_regions (struct target_ops
*self
)
12122 bfd_size_type size
;
12128 return; /* No information to give. */
12130 strcpy (target_buf
, "QTro");
12131 offset
= strlen (target_buf
);
12132 for (s
= exec_bfd
->sections
; s
; s
= s
->next
)
12134 char tmp1
[40], tmp2
[40];
12137 if ((s
->flags
& SEC_LOAD
) == 0 ||
12138 /* (s->flags & SEC_CODE) == 0 || */
12139 (s
->flags
& SEC_READONLY
) == 0)
12143 vma
= bfd_get_section_vma (abfd
, s
);
12144 size
= bfd_get_section_size (s
);
12145 sprintf_vma (tmp1
, vma
);
12146 sprintf_vma (tmp2
, vma
+ size
);
12147 sec_length
= 1 + strlen (tmp1
) + 1 + strlen (tmp2
);
12148 if (offset
+ sec_length
+ 1 > target_buf_size
)
12150 if (packet_support (PACKET_qXfer_traceframe_info
) != PACKET_ENABLE
)
12152 Too many sections for read-only sections definition packet."));
12155 xsnprintf (target_buf
+ offset
, target_buf_size
- offset
, ":%s,%s",
12157 offset
+= sec_length
;
12161 putpkt (target_buf
);
12162 getpkt (&target_buf
, &target_buf_size
, 0);
12167 remote_trace_start (struct target_ops
*self
)
12169 putpkt ("QTStart");
12170 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
12171 if (*target_buf
== '\0')
12172 error (_("Target does not support this command."));
12173 if (strcmp (target_buf
, "OK") != 0)
12174 error (_("Bogus reply from target: %s"), target_buf
);
12178 remote_get_trace_status (struct target_ops
*self
, struct trace_status
*ts
)
12180 /* Initialize it just to avoid a GCC false warning. */
12182 /* FIXME we need to get register block size some other way. */
12183 extern int trace_regblock_size
;
12184 enum packet_result result
;
12186 if (packet_support (PACKET_qTStatus
) == PACKET_DISABLE
)
12189 trace_regblock_size
= get_remote_arch_state ()->sizeof_g_packet
;
12191 putpkt ("qTStatus");
12195 p
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
12197 CATCH (ex
, RETURN_MASK_ERROR
)
12199 if (ex
.error
!= TARGET_CLOSE_ERROR
)
12201 exception_fprintf (gdb_stderr
, ex
, "qTStatus: ");
12204 throw_exception (ex
);
12208 result
= packet_ok (p
, &remote_protocol_packets
[PACKET_qTStatus
]);
12210 /* If the remote target doesn't do tracing, flag it. */
12211 if (result
== PACKET_UNKNOWN
)
12214 /* We're working with a live target. */
12215 ts
->filename
= NULL
;
12218 error (_("Bogus trace status reply from target: %s"), target_buf
);
12220 /* Function 'parse_trace_status' sets default value of each field of
12221 'ts' at first, so we don't have to do it here. */
12222 parse_trace_status (p
, ts
);
12224 return ts
->running
;
12228 remote_get_tracepoint_status (struct target_ops
*self
, struct breakpoint
*bp
,
12229 struct uploaded_tp
*utp
)
12231 struct remote_state
*rs
= get_remote_state ();
12233 struct bp_location
*loc
;
12234 struct tracepoint
*tp
= (struct tracepoint
*) bp
;
12235 size_t size
= get_remote_packet_size ();
12239 tp
->base
.hit_count
= 0;
12240 tp
->traceframe_usage
= 0;
12241 for (loc
= tp
->base
.loc
; loc
; loc
= loc
->next
)
12243 /* If the tracepoint was never downloaded, don't go asking for
12245 if (tp
->number_on_target
== 0)
12247 xsnprintf (rs
->buf
, size
, "qTP:%x:%s", tp
->number_on_target
,
12248 phex_nz (loc
->address
, 0));
12250 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
12251 if (reply
&& *reply
)
12254 parse_tracepoint_status (reply
+ 1, bp
, utp
);
12260 utp
->hit_count
= 0;
12261 utp
->traceframe_usage
= 0;
12262 xsnprintf (rs
->buf
, size
, "qTP:%x:%s", utp
->number
,
12263 phex_nz (utp
->addr
, 0));
12265 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
12266 if (reply
&& *reply
)
12269 parse_tracepoint_status (reply
+ 1, bp
, utp
);
12275 remote_trace_stop (struct target_ops
*self
)
12278 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
12279 if (*target_buf
== '\0')
12280 error (_("Target does not support this command."));
12281 if (strcmp (target_buf
, "OK") != 0)
12282 error (_("Bogus reply from target: %s"), target_buf
);
12286 remote_trace_find (struct target_ops
*self
,
12287 enum trace_find_type type
, int num
,
12288 CORE_ADDR addr1
, CORE_ADDR addr2
,
12291 struct remote_state
*rs
= get_remote_state ();
12292 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
12294 int target_frameno
= -1, target_tracept
= -1;
12296 /* Lookups other than by absolute frame number depend on the current
12297 trace selected, so make sure it is correct on the remote end
12299 if (type
!= tfind_number
)
12300 set_remote_traceframe ();
12303 strcpy (p
, "QTFrame:");
12304 p
= strchr (p
, '\0');
12308 xsnprintf (p
, endbuf
- p
, "%x", num
);
12311 xsnprintf (p
, endbuf
- p
, "pc:%s", phex_nz (addr1
, 0));
12314 xsnprintf (p
, endbuf
- p
, "tdp:%x", num
);
12317 xsnprintf (p
, endbuf
- p
, "range:%s:%s", phex_nz (addr1
, 0),
12318 phex_nz (addr2
, 0));
12320 case tfind_outside
:
12321 xsnprintf (p
, endbuf
- p
, "outside:%s:%s", phex_nz (addr1
, 0),
12322 phex_nz (addr2
, 0));
12325 error (_("Unknown trace find type %d"), type
);
12329 reply
= remote_get_noisy_reply (&(rs
->buf
), &rs
->buf_size
);
12330 if (*reply
== '\0')
12331 error (_("Target does not support this command."));
12333 while (reply
&& *reply
)
12338 target_frameno
= (int) strtol (p
, &reply
, 16);
12340 error (_("Unable to parse trace frame number"));
12341 /* Don't update our remote traceframe number cache on failure
12342 to select a remote traceframe. */
12343 if (target_frameno
== -1)
12348 target_tracept
= (int) strtol (p
, &reply
, 16);
12350 error (_("Unable to parse tracepoint number"));
12352 case 'O': /* "OK"? */
12353 if (reply
[1] == 'K' && reply
[2] == '\0')
12356 error (_("Bogus reply from target: %s"), reply
);
12359 error (_("Bogus reply from target: %s"), reply
);
12362 *tpp
= target_tracept
;
12364 rs
->remote_traceframe_number
= target_frameno
;
12365 return target_frameno
;
12369 remote_get_trace_state_variable_value (struct target_ops
*self
,
12370 int tsvnum
, LONGEST
*val
)
12372 struct remote_state
*rs
= get_remote_state ();
12376 set_remote_traceframe ();
12378 xsnprintf (rs
->buf
, get_remote_packet_size (), "qTV:%x", tsvnum
);
12380 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
12381 if (reply
&& *reply
)
12385 unpack_varlen_hex (reply
+ 1, &uval
);
12386 *val
= (LONGEST
) uval
;
12394 remote_save_trace_data (struct target_ops
*self
, const char *filename
)
12396 struct remote_state
*rs
= get_remote_state ();
12400 strcpy (p
, "QTSave:");
12402 if ((p
- rs
->buf
) + strlen (filename
) * 2 >= get_remote_packet_size ())
12403 error (_("Remote file name too long for trace save packet"));
12404 p
+= 2 * bin2hex ((gdb_byte
*) filename
, p
, strlen (filename
));
12407 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
12408 if (*reply
== '\0')
12409 error (_("Target does not support this command."));
12410 if (strcmp (reply
, "OK") != 0)
12411 error (_("Bogus reply from target: %s"), reply
);
12415 /* This is basically a memory transfer, but needs to be its own packet
12416 because we don't know how the target actually organizes its trace
12417 memory, plus we want to be able to ask for as much as possible, but
12418 not be unhappy if we don't get as much as we ask for. */
12421 remote_get_raw_trace_data (struct target_ops
*self
,
12422 gdb_byte
*buf
, ULONGEST offset
, LONGEST len
)
12424 struct remote_state
*rs
= get_remote_state ();
12430 strcpy (p
, "qTBuffer:");
12432 p
+= hexnumstr (p
, offset
);
12434 p
+= hexnumstr (p
, len
);
12438 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
12439 if (reply
&& *reply
)
12441 /* 'l' by itself means we're at the end of the buffer and
12442 there is nothing more to get. */
12446 /* Convert the reply into binary. Limit the number of bytes to
12447 convert according to our passed-in buffer size, rather than
12448 what was returned in the packet; if the target is
12449 unexpectedly generous and gives us a bigger reply than we
12450 asked for, we don't want to crash. */
12451 rslt
= hex2bin (target_buf
, buf
, len
);
12455 /* Something went wrong, flag as an error. */
12460 remote_set_disconnected_tracing (struct target_ops
*self
, int val
)
12462 struct remote_state
*rs
= get_remote_state ();
12464 if (packet_support (PACKET_DisconnectedTracing_feature
) == PACKET_ENABLE
)
12468 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTDisconnected:%x", val
);
12470 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
12471 if (*reply
== '\0')
12472 error (_("Target does not support this command."));
12473 if (strcmp (reply
, "OK") != 0)
12474 error (_("Bogus reply from target: %s"), reply
);
12477 warning (_("Target does not support disconnected tracing."));
12481 remote_core_of_thread (struct target_ops
*ops
, ptid_t ptid
)
12483 struct thread_info
*info
= find_thread_ptid (ptid
);
12485 if (info
&& info
->priv
)
12486 return info
->priv
->core
;
12491 remote_set_circular_trace_buffer (struct target_ops
*self
, int val
)
12493 struct remote_state
*rs
= get_remote_state ();
12496 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTBuffer:circular:%x", val
);
12498 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
12499 if (*reply
== '\0')
12500 error (_("Target does not support this command."));
12501 if (strcmp (reply
, "OK") != 0)
12502 error (_("Bogus reply from target: %s"), reply
);
12505 static struct traceframe_info
*
12506 remote_traceframe_info (struct target_ops
*self
)
12510 text
= target_read_stralloc (¤t_target
,
12511 TARGET_OBJECT_TRACEFRAME_INFO
, NULL
);
12514 struct traceframe_info
*info
;
12515 struct cleanup
*back_to
= make_cleanup (xfree
, text
);
12517 info
= parse_traceframe_info (text
);
12518 do_cleanups (back_to
);
12525 /* Handle the qTMinFTPILen packet. Returns the minimum length of
12526 instruction on which a fast tracepoint may be placed. Returns -1
12527 if the packet is not supported, and 0 if the minimum instruction
12528 length is unknown. */
12531 remote_get_min_fast_tracepoint_insn_len (struct target_ops
*self
)
12533 struct remote_state
*rs
= get_remote_state ();
12536 /* If we're not debugging a process yet, the IPA can't be
12538 if (!target_has_execution
)
12541 /* Make sure the remote is pointing at the right process. */
12542 set_general_process ();
12544 xsnprintf (rs
->buf
, get_remote_packet_size (), "qTMinFTPILen");
12546 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
12547 if (*reply
== '\0')
12551 ULONGEST min_insn_len
;
12553 unpack_varlen_hex (reply
, &min_insn_len
);
12555 return (int) min_insn_len
;
12560 remote_set_trace_buffer_size (struct target_ops
*self
, LONGEST val
)
12562 if (packet_support (PACKET_QTBuffer_size
) != PACKET_DISABLE
)
12564 struct remote_state
*rs
= get_remote_state ();
12565 char *buf
= rs
->buf
;
12566 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
12567 enum packet_result result
;
12569 gdb_assert (val
>= 0 || val
== -1);
12570 buf
+= xsnprintf (buf
, endbuf
- buf
, "QTBuffer:size:");
12571 /* Send -1 as literal "-1" to avoid host size dependency. */
12575 buf
+= hexnumstr (buf
, (ULONGEST
) -val
);
12578 buf
+= hexnumstr (buf
, (ULONGEST
) val
);
12581 remote_get_noisy_reply (&rs
->buf
, &rs
->buf_size
);
12582 result
= packet_ok (rs
->buf
,
12583 &remote_protocol_packets
[PACKET_QTBuffer_size
]);
12585 if (result
!= PACKET_OK
)
12586 warning (_("Bogus reply from target: %s"), rs
->buf
);
12591 remote_set_trace_notes (struct target_ops
*self
,
12592 const char *user
, const char *notes
,
12593 const char *stop_notes
)
12595 struct remote_state
*rs
= get_remote_state ();
12597 char *buf
= rs
->buf
;
12598 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
12601 buf
+= xsnprintf (buf
, endbuf
- buf
, "QTNotes:");
12604 buf
+= xsnprintf (buf
, endbuf
- buf
, "user:");
12605 nbytes
= bin2hex ((gdb_byte
*) user
, buf
, strlen (user
));
12611 buf
+= xsnprintf (buf
, endbuf
- buf
, "notes:");
12612 nbytes
= bin2hex ((gdb_byte
*) notes
, buf
, strlen (notes
));
12618 buf
+= xsnprintf (buf
, endbuf
- buf
, "tstop:");
12619 nbytes
= bin2hex ((gdb_byte
*) stop_notes
, buf
, strlen (stop_notes
));
12623 /* Ensure the buffer is terminated. */
12627 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
12628 if (*reply
== '\0')
12631 if (strcmp (reply
, "OK") != 0)
12632 error (_("Bogus reply from target: %s"), reply
);
12638 remote_use_agent (struct target_ops
*self
, int use
)
12640 if (packet_support (PACKET_QAgent
) != PACKET_DISABLE
)
12642 struct remote_state
*rs
= get_remote_state ();
12644 /* If the stub supports QAgent. */
12645 xsnprintf (rs
->buf
, get_remote_packet_size (), "QAgent:%d", use
);
12647 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
12649 if (strcmp (rs
->buf
, "OK") == 0)
12660 remote_can_use_agent (struct target_ops
*self
)
12662 return (packet_support (PACKET_QAgent
) != PACKET_DISABLE
);
12665 struct btrace_target_info
12667 /* The ptid of the traced thread. */
12670 /* The obtained branch trace configuration. */
12671 struct btrace_config conf
;
12674 /* Reset our idea of our target's btrace configuration. */
12677 remote_btrace_reset (void)
12679 struct remote_state
*rs
= get_remote_state ();
12681 memset (&rs
->btrace_config
, 0, sizeof (rs
->btrace_config
));
12684 /* Check whether the target supports branch tracing. */
12687 remote_supports_btrace (struct target_ops
*self
, enum btrace_format format
)
12689 if (packet_support (PACKET_Qbtrace_off
) != PACKET_ENABLE
)
12691 if (packet_support (PACKET_qXfer_btrace
) != PACKET_ENABLE
)
12696 case BTRACE_FORMAT_NONE
:
12699 case BTRACE_FORMAT_BTS
:
12700 return (packet_support (PACKET_Qbtrace_bts
) == PACKET_ENABLE
);
12702 case BTRACE_FORMAT_PT
:
12703 /* The trace is decoded on the host. Even if our target supports it,
12704 we still need to have libipt to decode the trace. */
12705 #if defined (HAVE_LIBIPT)
12706 return (packet_support (PACKET_Qbtrace_pt
) == PACKET_ENABLE
);
12707 #else /* !defined (HAVE_LIBIPT) */
12709 #endif /* !defined (HAVE_LIBIPT) */
12712 internal_error (__FILE__
, __LINE__
, _("Unknown branch trace format"));
12715 /* Synchronize the configuration with the target. */
12718 btrace_sync_conf (const struct btrace_config
*conf
)
12720 struct packet_config
*packet
;
12721 struct remote_state
*rs
;
12722 char *buf
, *pos
, *endbuf
;
12724 rs
= get_remote_state ();
12726 endbuf
= buf
+ get_remote_packet_size ();
12728 packet
= &remote_protocol_packets
[PACKET_Qbtrace_conf_bts_size
];
12729 if (packet_config_support (packet
) == PACKET_ENABLE
12730 && conf
->bts
.size
!= rs
->btrace_config
.bts
.size
)
12733 pos
+= xsnprintf (pos
, endbuf
- pos
, "%s=0x%x", packet
->name
,
12737 getpkt (&buf
, &rs
->buf_size
, 0);
12739 if (packet_ok (buf
, packet
) == PACKET_ERROR
)
12741 if (buf
[0] == 'E' && buf
[1] == '.')
12742 error (_("Failed to configure the BTS buffer size: %s"), buf
+ 2);
12744 error (_("Failed to configure the BTS buffer size."));
12747 rs
->btrace_config
.bts
.size
= conf
->bts
.size
;
12750 packet
= &remote_protocol_packets
[PACKET_Qbtrace_conf_pt_size
];
12751 if (packet_config_support (packet
) == PACKET_ENABLE
12752 && conf
->pt
.size
!= rs
->btrace_config
.pt
.size
)
12755 pos
+= xsnprintf (pos
, endbuf
- pos
, "%s=0x%x", packet
->name
,
12759 getpkt (&buf
, &rs
->buf_size
, 0);
12761 if (packet_ok (buf
, packet
) == PACKET_ERROR
)
12763 if (buf
[0] == 'E' && buf
[1] == '.')
12764 error (_("Failed to configure the trace buffer size: %s"), buf
+ 2);
12766 error (_("Failed to configure the trace buffer size."));
12769 rs
->btrace_config
.pt
.size
= conf
->pt
.size
;
12773 /* Read the current thread's btrace configuration from the target and
12774 store it into CONF. */
12777 btrace_read_config (struct btrace_config
*conf
)
12781 xml
= target_read_stralloc (¤t_target
,
12782 TARGET_OBJECT_BTRACE_CONF
, "");
12785 struct cleanup
*cleanup
;
12787 cleanup
= make_cleanup (xfree
, xml
);
12788 parse_xml_btrace_conf (conf
, xml
);
12789 do_cleanups (cleanup
);
12793 /* Enable branch tracing. */
12795 static struct btrace_target_info
*
12796 remote_enable_btrace (struct target_ops
*self
, ptid_t ptid
,
12797 const struct btrace_config
*conf
)
12799 struct btrace_target_info
*tinfo
= NULL
;
12800 struct packet_config
*packet
= NULL
;
12801 struct remote_state
*rs
= get_remote_state ();
12802 char *buf
= rs
->buf
;
12803 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
12805 switch (conf
->format
)
12807 case BTRACE_FORMAT_BTS
:
12808 packet
= &remote_protocol_packets
[PACKET_Qbtrace_bts
];
12811 case BTRACE_FORMAT_PT
:
12812 packet
= &remote_protocol_packets
[PACKET_Qbtrace_pt
];
12816 if (packet
== NULL
|| packet_config_support (packet
) != PACKET_ENABLE
)
12817 error (_("Target does not support branch tracing."));
12819 btrace_sync_conf (conf
);
12821 set_general_thread (ptid
);
12823 buf
+= xsnprintf (buf
, endbuf
- buf
, "%s", packet
->name
);
12825 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
12827 if (packet_ok (rs
->buf
, packet
) == PACKET_ERROR
)
12829 if (rs
->buf
[0] == 'E' && rs
->buf
[1] == '.')
12830 error (_("Could not enable branch tracing for %s: %s"),
12831 target_pid_to_str (ptid
), rs
->buf
+ 2);
12833 error (_("Could not enable branch tracing for %s."),
12834 target_pid_to_str (ptid
));
12837 tinfo
= XCNEW (struct btrace_target_info
);
12838 tinfo
->ptid
= ptid
;
12840 /* If we fail to read the configuration, we lose some information, but the
12841 tracing itself is not impacted. */
12844 btrace_read_config (&tinfo
->conf
);
12846 CATCH (err
, RETURN_MASK_ERROR
)
12848 if (err
.message
!= NULL
)
12849 warning ("%s", err
.message
);
12856 /* Disable branch tracing. */
12859 remote_disable_btrace (struct target_ops
*self
,
12860 struct btrace_target_info
*tinfo
)
12862 struct packet_config
*packet
= &remote_protocol_packets
[PACKET_Qbtrace_off
];
12863 struct remote_state
*rs
= get_remote_state ();
12864 char *buf
= rs
->buf
;
12865 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
12867 if (packet_config_support (packet
) != PACKET_ENABLE
)
12868 error (_("Target does not support branch tracing."));
12870 set_general_thread (tinfo
->ptid
);
12872 buf
+= xsnprintf (buf
, endbuf
- buf
, "%s", packet
->name
);
12874 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
12876 if (packet_ok (rs
->buf
, packet
) == PACKET_ERROR
)
12878 if (rs
->buf
[0] == 'E' && rs
->buf
[1] == '.')
12879 error (_("Could not disable branch tracing for %s: %s"),
12880 target_pid_to_str (tinfo
->ptid
), rs
->buf
+ 2);
12882 error (_("Could not disable branch tracing for %s."),
12883 target_pid_to_str (tinfo
->ptid
));
12889 /* Teardown branch tracing. */
12892 remote_teardown_btrace (struct target_ops
*self
,
12893 struct btrace_target_info
*tinfo
)
12895 /* We must not talk to the target during teardown. */
12899 /* Read the branch trace. */
12901 static enum btrace_error
12902 remote_read_btrace (struct target_ops
*self
,
12903 struct btrace_data
*btrace
,
12904 struct btrace_target_info
*tinfo
,
12905 enum btrace_read_type type
)
12907 struct packet_config
*packet
= &remote_protocol_packets
[PACKET_qXfer_btrace
];
12908 struct cleanup
*cleanup
;
12912 if (packet_config_support (packet
) != PACKET_ENABLE
)
12913 error (_("Target does not support branch tracing."));
12915 #if !defined(HAVE_LIBEXPAT)
12916 error (_("Cannot process branch tracing result. XML parsing not supported."));
12921 case BTRACE_READ_ALL
:
12924 case BTRACE_READ_NEW
:
12927 case BTRACE_READ_DELTA
:
12931 internal_error (__FILE__
, __LINE__
,
12932 _("Bad branch tracing read type: %u."),
12933 (unsigned int) type
);
12936 xml
= target_read_stralloc (¤t_target
,
12937 TARGET_OBJECT_BTRACE
, annex
);
12939 return BTRACE_ERR_UNKNOWN
;
12941 cleanup
= make_cleanup (xfree
, xml
);
12942 parse_xml_btrace (btrace
, xml
);
12943 do_cleanups (cleanup
);
12945 return BTRACE_ERR_NONE
;
12948 static const struct btrace_config
*
12949 remote_btrace_conf (struct target_ops
*self
,
12950 const struct btrace_target_info
*tinfo
)
12952 return &tinfo
->conf
;
12956 remote_augmented_libraries_svr4_read (struct target_ops
*self
)
12958 return (packet_support (PACKET_augmented_libraries_svr4_read_feature
)
12962 /* Implementation of to_load. */
12965 remote_load (struct target_ops
*self
, const char *name
, int from_tty
)
12967 generic_load (name
, from_tty
);
12970 /* Accepts an integer PID; returns a string representing a file that
12971 can be opened on the remote side to get the symbols for the child
12972 process. Returns NULL if the operation is not supported. */
12975 remote_pid_to_exec_file (struct target_ops
*self
, int pid
)
12977 static char *filename
= NULL
;
12978 struct inferior
*inf
;
12979 char *annex
= NULL
;
12981 if (packet_support (PACKET_qXfer_exec_file
) != PACKET_ENABLE
)
12984 if (filename
!= NULL
)
12987 inf
= find_inferior_pid (pid
);
12989 internal_error (__FILE__
, __LINE__
,
12990 _("not currently attached to process %d"), pid
);
12992 if (!inf
->fake_pid_p
)
12994 const int annex_size
= 9;
12996 annex
= (char *) alloca (annex_size
);
12997 xsnprintf (annex
, annex_size
, "%x", pid
);
13000 filename
= target_read_stralloc (¤t_target
,
13001 TARGET_OBJECT_EXEC_FILE
, annex
);
13006 /* Implement the to_can_do_single_step target_ops method. */
13009 remote_can_do_single_step (struct target_ops
*ops
)
13011 /* We can only tell whether target supports single step or not by
13012 supported s and S vCont actions if the stub supports vContSupported
13013 feature. If the stub doesn't support vContSupported feature,
13014 we have conservatively to think target doesn't supports single
13016 if (packet_support (PACKET_vContSupported
) == PACKET_ENABLE
)
13018 struct remote_state
*rs
= get_remote_state ();
13020 if (packet_support (PACKET_vCont
) == PACKET_SUPPORT_UNKNOWN
)
13021 remote_vcont_probe (rs
);
13023 return rs
->supports_vCont
.s
&& rs
->supports_vCont
.S
;
13030 init_remote_ops (void)
13032 remote_ops
.to_shortname
= "remote";
13033 remote_ops
.to_longname
= "Remote serial target in gdb-specific protocol";
13034 remote_ops
.to_doc
=
13035 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
13036 Specify the serial device it is connected to\n\
13037 (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).";
13038 remote_ops
.to_open
= remote_open
;
13039 remote_ops
.to_close
= remote_close
;
13040 remote_ops
.to_detach
= remote_detach
;
13041 remote_ops
.to_disconnect
= remote_disconnect
;
13042 remote_ops
.to_resume
= remote_resume
;
13043 remote_ops
.to_wait
= remote_wait
;
13044 remote_ops
.to_fetch_registers
= remote_fetch_registers
;
13045 remote_ops
.to_store_registers
= remote_store_registers
;
13046 remote_ops
.to_prepare_to_store
= remote_prepare_to_store
;
13047 remote_ops
.to_files_info
= remote_files_info
;
13048 remote_ops
.to_insert_breakpoint
= remote_insert_breakpoint
;
13049 remote_ops
.to_remove_breakpoint
= remote_remove_breakpoint
;
13050 remote_ops
.to_stopped_by_sw_breakpoint
= remote_stopped_by_sw_breakpoint
;
13051 remote_ops
.to_supports_stopped_by_sw_breakpoint
= remote_supports_stopped_by_sw_breakpoint
;
13052 remote_ops
.to_stopped_by_hw_breakpoint
= remote_stopped_by_hw_breakpoint
;
13053 remote_ops
.to_supports_stopped_by_hw_breakpoint
= remote_supports_stopped_by_hw_breakpoint
;
13054 remote_ops
.to_stopped_by_watchpoint
= remote_stopped_by_watchpoint
;
13055 remote_ops
.to_stopped_data_address
= remote_stopped_data_address
;
13056 remote_ops
.to_watchpoint_addr_within_range
=
13057 remote_watchpoint_addr_within_range
;
13058 remote_ops
.to_can_use_hw_breakpoint
= remote_check_watch_resources
;
13059 remote_ops
.to_insert_hw_breakpoint
= remote_insert_hw_breakpoint
;
13060 remote_ops
.to_remove_hw_breakpoint
= remote_remove_hw_breakpoint
;
13061 remote_ops
.to_region_ok_for_hw_watchpoint
13062 = remote_region_ok_for_hw_watchpoint
;
13063 remote_ops
.to_insert_watchpoint
= remote_insert_watchpoint
;
13064 remote_ops
.to_remove_watchpoint
= remote_remove_watchpoint
;
13065 remote_ops
.to_kill
= remote_kill
;
13066 remote_ops
.to_load
= remote_load
;
13067 remote_ops
.to_mourn_inferior
= remote_mourn
;
13068 remote_ops
.to_pass_signals
= remote_pass_signals
;
13069 remote_ops
.to_set_syscall_catchpoint
= remote_set_syscall_catchpoint
;
13070 remote_ops
.to_program_signals
= remote_program_signals
;
13071 remote_ops
.to_thread_alive
= remote_thread_alive
;
13072 remote_ops
.to_thread_name
= remote_thread_name
;
13073 remote_ops
.to_update_thread_list
= remote_update_thread_list
;
13074 remote_ops
.to_pid_to_str
= remote_pid_to_str
;
13075 remote_ops
.to_extra_thread_info
= remote_threads_extra_info
;
13076 remote_ops
.to_get_ada_task_ptid
= remote_get_ada_task_ptid
;
13077 remote_ops
.to_stop
= remote_stop
;
13078 remote_ops
.to_interrupt
= remote_interrupt
;
13079 remote_ops
.to_check_pending_interrupt
= remote_check_pending_interrupt
;
13080 remote_ops
.to_xfer_partial
= remote_xfer_partial
;
13081 remote_ops
.to_rcmd
= remote_rcmd
;
13082 remote_ops
.to_pid_to_exec_file
= remote_pid_to_exec_file
;
13083 remote_ops
.to_log_command
= serial_log_command
;
13084 remote_ops
.to_get_thread_local_address
= remote_get_thread_local_address
;
13085 remote_ops
.to_stratum
= process_stratum
;
13086 remote_ops
.to_has_all_memory
= default_child_has_all_memory
;
13087 remote_ops
.to_has_memory
= default_child_has_memory
;
13088 remote_ops
.to_has_stack
= default_child_has_stack
;
13089 remote_ops
.to_has_registers
= default_child_has_registers
;
13090 remote_ops
.to_has_execution
= default_child_has_execution
;
13091 remote_ops
.to_has_thread_control
= tc_schedlock
; /* can lock scheduler */
13092 remote_ops
.to_can_execute_reverse
= remote_can_execute_reverse
;
13093 remote_ops
.to_magic
= OPS_MAGIC
;
13094 remote_ops
.to_memory_map
= remote_memory_map
;
13095 remote_ops
.to_flash_erase
= remote_flash_erase
;
13096 remote_ops
.to_flash_done
= remote_flash_done
;
13097 remote_ops
.to_read_description
= remote_read_description
;
13098 remote_ops
.to_search_memory
= remote_search_memory
;
13099 remote_ops
.to_can_async_p
= remote_can_async_p
;
13100 remote_ops
.to_is_async_p
= remote_is_async_p
;
13101 remote_ops
.to_async
= remote_async
;
13102 remote_ops
.to_thread_events
= remote_thread_events
;
13103 remote_ops
.to_can_do_single_step
= remote_can_do_single_step
;
13104 remote_ops
.to_terminal_inferior
= remote_terminal_inferior
;
13105 remote_ops
.to_terminal_ours
= remote_terminal_ours
;
13106 remote_ops
.to_supports_non_stop
= remote_supports_non_stop
;
13107 remote_ops
.to_supports_multi_process
= remote_supports_multi_process
;
13108 remote_ops
.to_supports_disable_randomization
13109 = remote_supports_disable_randomization
;
13110 remote_ops
.to_filesystem_is_local
= remote_filesystem_is_local
;
13111 remote_ops
.to_fileio_open
= remote_hostio_open
;
13112 remote_ops
.to_fileio_pwrite
= remote_hostio_pwrite
;
13113 remote_ops
.to_fileio_pread
= remote_hostio_pread
;
13114 remote_ops
.to_fileio_fstat
= remote_hostio_fstat
;
13115 remote_ops
.to_fileio_close
= remote_hostio_close
;
13116 remote_ops
.to_fileio_unlink
= remote_hostio_unlink
;
13117 remote_ops
.to_fileio_readlink
= remote_hostio_readlink
;
13118 remote_ops
.to_supports_enable_disable_tracepoint
= remote_supports_enable_disable_tracepoint
;
13119 remote_ops
.to_supports_string_tracing
= remote_supports_string_tracing
;
13120 remote_ops
.to_supports_evaluation_of_breakpoint_conditions
= remote_supports_cond_breakpoints
;
13121 remote_ops
.to_can_run_breakpoint_commands
= remote_can_run_breakpoint_commands
;
13122 remote_ops
.to_trace_init
= remote_trace_init
;
13123 remote_ops
.to_download_tracepoint
= remote_download_tracepoint
;
13124 remote_ops
.to_can_download_tracepoint
= remote_can_download_tracepoint
;
13125 remote_ops
.to_download_trace_state_variable
13126 = remote_download_trace_state_variable
;
13127 remote_ops
.to_enable_tracepoint
= remote_enable_tracepoint
;
13128 remote_ops
.to_disable_tracepoint
= remote_disable_tracepoint
;
13129 remote_ops
.to_trace_set_readonly_regions
= remote_trace_set_readonly_regions
;
13130 remote_ops
.to_trace_start
= remote_trace_start
;
13131 remote_ops
.to_get_trace_status
= remote_get_trace_status
;
13132 remote_ops
.to_get_tracepoint_status
= remote_get_tracepoint_status
;
13133 remote_ops
.to_trace_stop
= remote_trace_stop
;
13134 remote_ops
.to_trace_find
= remote_trace_find
;
13135 remote_ops
.to_get_trace_state_variable_value
13136 = remote_get_trace_state_variable_value
;
13137 remote_ops
.to_save_trace_data
= remote_save_trace_data
;
13138 remote_ops
.to_upload_tracepoints
= remote_upload_tracepoints
;
13139 remote_ops
.to_upload_trace_state_variables
13140 = remote_upload_trace_state_variables
;
13141 remote_ops
.to_get_raw_trace_data
= remote_get_raw_trace_data
;
13142 remote_ops
.to_get_min_fast_tracepoint_insn_len
= remote_get_min_fast_tracepoint_insn_len
;
13143 remote_ops
.to_set_disconnected_tracing
= remote_set_disconnected_tracing
;
13144 remote_ops
.to_set_circular_trace_buffer
= remote_set_circular_trace_buffer
;
13145 remote_ops
.to_set_trace_buffer_size
= remote_set_trace_buffer_size
;
13146 remote_ops
.to_set_trace_notes
= remote_set_trace_notes
;
13147 remote_ops
.to_core_of_thread
= remote_core_of_thread
;
13148 remote_ops
.to_verify_memory
= remote_verify_memory
;
13149 remote_ops
.to_get_tib_address
= remote_get_tib_address
;
13150 remote_ops
.to_set_permissions
= remote_set_permissions
;
13151 remote_ops
.to_static_tracepoint_marker_at
13152 = remote_static_tracepoint_marker_at
;
13153 remote_ops
.to_static_tracepoint_markers_by_strid
13154 = remote_static_tracepoint_markers_by_strid
;
13155 remote_ops
.to_traceframe_info
= remote_traceframe_info
;
13156 remote_ops
.to_use_agent
= remote_use_agent
;
13157 remote_ops
.to_can_use_agent
= remote_can_use_agent
;
13158 remote_ops
.to_supports_btrace
= remote_supports_btrace
;
13159 remote_ops
.to_enable_btrace
= remote_enable_btrace
;
13160 remote_ops
.to_disable_btrace
= remote_disable_btrace
;
13161 remote_ops
.to_teardown_btrace
= remote_teardown_btrace
;
13162 remote_ops
.to_read_btrace
= remote_read_btrace
;
13163 remote_ops
.to_btrace_conf
= remote_btrace_conf
;
13164 remote_ops
.to_augmented_libraries_svr4_read
=
13165 remote_augmented_libraries_svr4_read
;
13166 remote_ops
.to_follow_fork
= remote_follow_fork
;
13167 remote_ops
.to_follow_exec
= remote_follow_exec
;
13168 remote_ops
.to_insert_fork_catchpoint
= remote_insert_fork_catchpoint
;
13169 remote_ops
.to_remove_fork_catchpoint
= remote_remove_fork_catchpoint
;
13170 remote_ops
.to_insert_vfork_catchpoint
= remote_insert_vfork_catchpoint
;
13171 remote_ops
.to_remove_vfork_catchpoint
= remote_remove_vfork_catchpoint
;
13172 remote_ops
.to_insert_exec_catchpoint
= remote_insert_exec_catchpoint
;
13173 remote_ops
.to_remove_exec_catchpoint
= remote_remove_exec_catchpoint
;
13176 /* Set up the extended remote vector by making a copy of the standard
13177 remote vector and adding to it. */
13180 init_extended_remote_ops (void)
13182 extended_remote_ops
= remote_ops
;
13184 extended_remote_ops
.to_shortname
= "extended-remote";
13185 extended_remote_ops
.to_longname
=
13186 "Extended remote serial target in gdb-specific protocol";
13187 extended_remote_ops
.to_doc
=
13188 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
13189 Specify the serial device it is connected to (e.g. /dev/ttya).";
13190 extended_remote_ops
.to_open
= extended_remote_open
;
13191 extended_remote_ops
.to_create_inferior
= extended_remote_create_inferior
;
13192 extended_remote_ops
.to_detach
= extended_remote_detach
;
13193 extended_remote_ops
.to_attach
= extended_remote_attach
;
13194 extended_remote_ops
.to_post_attach
= extended_remote_post_attach
;
13195 extended_remote_ops
.to_supports_disable_randomization
13196 = extended_remote_supports_disable_randomization
;
13200 remote_can_async_p (struct target_ops
*ops
)
13202 struct remote_state
*rs
= get_remote_state ();
13204 if (!target_async_permitted
)
13205 /* We only enable async when the user specifically asks for it. */
13208 /* We're async whenever the serial device is. */
13209 return serial_can_async_p (rs
->remote_desc
);
13213 remote_is_async_p (struct target_ops
*ops
)
13215 struct remote_state
*rs
= get_remote_state ();
13217 if (!target_async_permitted
)
13218 /* We only enable async when the user specifically asks for it. */
13221 /* We're async whenever the serial device is. */
13222 return serial_is_async_p (rs
->remote_desc
);
13225 /* Pass the SERIAL event on and up to the client. One day this code
13226 will be able to delay notifying the client of an event until the
13227 point where an entire packet has been received. */
13229 static serial_event_ftype remote_async_serial_handler
;
13232 remote_async_serial_handler (struct serial
*scb
, void *context
)
13234 /* Don't propogate error information up to the client. Instead let
13235 the client find out about the error by querying the target. */
13236 inferior_event_handler (INF_REG_EVENT
, NULL
);
13240 remote_async_inferior_event_handler (gdb_client_data data
)
13242 inferior_event_handler (INF_REG_EVENT
, NULL
);
13246 remote_async (struct target_ops
*ops
, int enable
)
13248 struct remote_state
*rs
= get_remote_state ();
13252 serial_async (rs
->remote_desc
, remote_async_serial_handler
, rs
);
13254 /* If there are pending events in the stop reply queue tell the
13255 event loop to process them. */
13256 if (!QUEUE_is_empty (stop_reply_p
, stop_reply_queue
))
13257 mark_async_event_handler (remote_async_inferior_event_token
);
13258 /* For simplicity, below we clear the pending events token
13259 without remembering whether it is marked, so here we always
13260 mark it. If there's actually no pending notification to
13261 process, this ends up being a no-op (other than a spurious
13262 event-loop wakeup). */
13263 if (target_is_non_stop_p ())
13264 mark_async_event_handler (rs
->notif_state
->get_pending_events_token
);
13268 serial_async (rs
->remote_desc
, NULL
, NULL
);
13269 /* If the core is disabling async, it doesn't want to be
13270 disturbed with target events. Clear all async event sources
13272 clear_async_event_handler (remote_async_inferior_event_token
);
13273 if (target_is_non_stop_p ())
13274 clear_async_event_handler (rs
->notif_state
->get_pending_events_token
);
13278 /* Implementation of the to_thread_events method. */
13281 remote_thread_events (struct target_ops
*ops
, int enable
)
13283 struct remote_state
*rs
= get_remote_state ();
13284 size_t size
= get_remote_packet_size ();
13286 if (packet_support (PACKET_QThreadEvents
) == PACKET_DISABLE
)
13289 xsnprintf (rs
->buf
, size
, "QThreadEvents:%x", enable
? 1 : 0);
13291 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
13293 switch (packet_ok (rs
->buf
,
13294 &remote_protocol_packets
[PACKET_QThreadEvents
]))
13297 if (strcmp (rs
->buf
, "OK") != 0)
13298 error (_("Remote refused setting thread events: %s"), rs
->buf
);
13301 warning (_("Remote failure reply: %s"), rs
->buf
);
13303 case PACKET_UNKNOWN
:
13309 set_remote_cmd (char *args
, int from_tty
)
13311 help_list (remote_set_cmdlist
, "set remote ", all_commands
, gdb_stdout
);
13315 show_remote_cmd (char *args
, int from_tty
)
13317 /* We can't just use cmd_show_list here, because we want to skip
13318 the redundant "show remote Z-packet" and the legacy aliases. */
13319 struct cleanup
*showlist_chain
;
13320 struct cmd_list_element
*list
= remote_show_cmdlist
;
13321 struct ui_out
*uiout
= current_uiout
;
13323 showlist_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "showlist");
13324 for (; list
!= NULL
; list
= list
->next
)
13325 if (strcmp (list
->name
, "Z-packet") == 0)
13327 else if (list
->type
== not_set_cmd
)
13328 /* Alias commands are exactly like the original, except they
13329 don't have the normal type. */
13333 struct cleanup
*option_chain
13334 = make_cleanup_ui_out_tuple_begin_end (uiout
, "option");
13336 ui_out_field_string (uiout
, "name", list
->name
);
13337 ui_out_text (uiout
, ": ");
13338 if (list
->type
== show_cmd
)
13339 do_show_command ((char *) NULL
, from_tty
, list
);
13341 cmd_func (list
, NULL
, from_tty
);
13342 /* Close the tuple. */
13343 do_cleanups (option_chain
);
13346 /* Close the tuple. */
13347 do_cleanups (showlist_chain
);
13351 /* Function to be called whenever a new objfile (shlib) is detected. */
13353 remote_new_objfile (struct objfile
*objfile
)
13355 struct remote_state
*rs
= get_remote_state ();
13357 if (rs
->remote_desc
!= 0) /* Have a remote connection. */
13358 remote_check_symbols ();
13361 /* Pull all the tracepoints defined on the target and create local
13362 data structures representing them. We don't want to create real
13363 tracepoints yet, we don't want to mess up the user's existing
13367 remote_upload_tracepoints (struct target_ops
*self
, struct uploaded_tp
**utpp
)
13369 struct remote_state
*rs
= get_remote_state ();
13372 /* Ask for a first packet of tracepoint definition. */
13374 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
13376 while (*p
&& *p
!= 'l')
13378 parse_tracepoint_definition (p
, utpp
);
13379 /* Ask for another packet of tracepoint definition. */
13381 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
13388 remote_upload_trace_state_variables (struct target_ops
*self
,
13389 struct uploaded_tsv
**utsvp
)
13391 struct remote_state
*rs
= get_remote_state ();
13394 /* Ask for a first packet of variable definition. */
13396 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
13398 while (*p
&& *p
!= 'l')
13400 parse_tsv_definition (p
, utsvp
);
13401 /* Ask for another packet of variable definition. */
13403 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
13409 /* The "set/show range-stepping" show hook. */
13412 show_range_stepping (struct ui_file
*file
, int from_tty
,
13413 struct cmd_list_element
*c
,
13416 fprintf_filtered (file
,
13417 _("Debugger's willingness to use range stepping "
13418 "is %s.\n"), value
);
13421 /* The "set/show range-stepping" set hook. */
13424 set_range_stepping (char *ignore_args
, int from_tty
,
13425 struct cmd_list_element
*c
)
13427 struct remote_state
*rs
= get_remote_state ();
13429 /* Whene enabling, check whether range stepping is actually
13430 supported by the target, and warn if not. */
13431 if (use_range_stepping
)
13433 if (rs
->remote_desc
!= NULL
)
13435 if (packet_support (PACKET_vCont
) == PACKET_SUPPORT_UNKNOWN
)
13436 remote_vcont_probe (rs
);
13438 if (packet_support (PACKET_vCont
) == PACKET_ENABLE
13439 && rs
->supports_vCont
.r
)
13443 warning (_("Range stepping is not supported by the current target"));
13448 _initialize_remote (void)
13450 struct cmd_list_element
*cmd
;
13451 const char *cmd_name
;
13453 /* architecture specific data */
13454 remote_gdbarch_data_handle
=
13455 gdbarch_data_register_post_init (init_remote_state
);
13456 remote_g_packet_data_handle
=
13457 gdbarch_data_register_pre_init (remote_g_packet_data_init
);
13460 = register_program_space_data_with_cleanup (NULL
,
13461 remote_pspace_data_cleanup
);
13463 /* Initialize the per-target state. At the moment there is only one
13464 of these, not one per target. Only one target is active at a
13466 remote_state
= new_remote_state ();
13468 init_remote_ops ();
13469 add_target (&remote_ops
);
13471 init_extended_remote_ops ();
13472 add_target (&extended_remote_ops
);
13474 /* Hook into new objfile notification. */
13475 observer_attach_new_objfile (remote_new_objfile
);
13476 /* We're no longer interested in notification events of an inferior
13478 observer_attach_inferior_exit (discard_pending_stop_replies
);
13480 /* Set up signal handlers. */
13481 async_sigint_remote_token
=
13482 create_async_signal_handler (async_remote_interrupt
, NULL
);
13483 async_sigint_remote_twice_token
=
13484 create_async_signal_handler (async_remote_interrupt_twice
, NULL
);
13487 init_remote_threadtests ();
13490 stop_reply_queue
= QUEUE_alloc (stop_reply_p
, stop_reply_xfree
);
13491 /* set/show remote ... */
13493 add_prefix_cmd ("remote", class_maintenance
, set_remote_cmd
, _("\
13494 Remote protocol specific variables\n\
13495 Configure various remote-protocol specific variables such as\n\
13496 the packets being used"),
13497 &remote_set_cmdlist
, "set remote ",
13498 0 /* allow-unknown */, &setlist
);
13499 add_prefix_cmd ("remote", class_maintenance
, show_remote_cmd
, _("\
13500 Remote protocol specific variables\n\
13501 Configure various remote-protocol specific variables such as\n\
13502 the packets being used"),
13503 &remote_show_cmdlist
, "show remote ",
13504 0 /* allow-unknown */, &showlist
);
13506 add_cmd ("compare-sections", class_obscure
, compare_sections_command
, _("\
13507 Compare section data on target to the exec file.\n\
13508 Argument is a single section name (default: all loaded sections).\n\
13509 To compare only read-only loaded sections, specify the -r option."),
13512 add_cmd ("packet", class_maintenance
, packet_command
, _("\
13513 Send an arbitrary packet to a remote target.\n\
13514 maintenance packet TEXT\n\
13515 If GDB is talking to an inferior via the GDB serial protocol, then\n\
13516 this command sends the string TEXT to the inferior, and displays the\n\
13517 response packet. GDB supplies the initial `$' character, and the\n\
13518 terminating `#' character and checksum."),
13521 add_setshow_boolean_cmd ("remotebreak", no_class
, &remote_break
, _("\
13522 Set whether to send break if interrupted."), _("\
13523 Show whether to send break if interrupted."), _("\
13524 If set, a break, instead of a cntrl-c, is sent to the remote target."),
13525 set_remotebreak
, show_remotebreak
,
13526 &setlist
, &showlist
);
13527 cmd_name
= "remotebreak";
13528 cmd
= lookup_cmd (&cmd_name
, setlist
, "", -1, 1);
13529 deprecate_cmd (cmd
, "set remote interrupt-sequence");
13530 cmd_name
= "remotebreak"; /* needed because lookup_cmd updates the pointer */
13531 cmd
= lookup_cmd (&cmd_name
, showlist
, "", -1, 1);
13532 deprecate_cmd (cmd
, "show remote interrupt-sequence");
13534 add_setshow_enum_cmd ("interrupt-sequence", class_support
,
13535 interrupt_sequence_modes
, &interrupt_sequence_mode
,
13537 Set interrupt sequence to remote target."), _("\
13538 Show interrupt sequence to remote target."), _("\
13539 Valid value is \"Ctrl-C\", \"BREAK\" or \"BREAK-g\". The default is \"Ctrl-C\"."),
13540 NULL
, show_interrupt_sequence
,
13541 &remote_set_cmdlist
,
13542 &remote_show_cmdlist
);
13544 add_setshow_boolean_cmd ("interrupt-on-connect", class_support
,
13545 &interrupt_on_connect
, _("\
13546 Set whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \
13547 Show whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \
13548 If set, interrupt sequence is sent to remote target."),
13550 &remote_set_cmdlist
, &remote_show_cmdlist
);
13552 /* Install commands for configuring memory read/write packets. */
13554 add_cmd ("remotewritesize", no_class
, set_memory_write_packet_size
, _("\
13555 Set the maximum number of bytes per memory write packet (deprecated)."),
13557 add_cmd ("remotewritesize", no_class
, show_memory_write_packet_size
, _("\
13558 Show the maximum number of bytes per memory write packet (deprecated)."),
13560 add_cmd ("memory-write-packet-size", no_class
,
13561 set_memory_write_packet_size
, _("\
13562 Set the maximum number of bytes per memory-write packet.\n\
13563 Specify the number of bytes in a packet or 0 (zero) for the\n\
13564 default packet size. The actual limit is further reduced\n\
13565 dependent on the target. Specify ``fixed'' to disable the\n\
13566 further restriction and ``limit'' to enable that restriction."),
13567 &remote_set_cmdlist
);
13568 add_cmd ("memory-read-packet-size", no_class
,
13569 set_memory_read_packet_size
, _("\
13570 Set the maximum number of bytes per memory-read packet.\n\
13571 Specify the number of bytes in a packet or 0 (zero) for the\n\
13572 default packet size. The actual limit is further reduced\n\
13573 dependent on the target. Specify ``fixed'' to disable the\n\
13574 further restriction and ``limit'' to enable that restriction."),
13575 &remote_set_cmdlist
);
13576 add_cmd ("memory-write-packet-size", no_class
,
13577 show_memory_write_packet_size
,
13578 _("Show the maximum number of bytes per memory-write packet."),
13579 &remote_show_cmdlist
);
13580 add_cmd ("memory-read-packet-size", no_class
,
13581 show_memory_read_packet_size
,
13582 _("Show the maximum number of bytes per memory-read packet."),
13583 &remote_show_cmdlist
);
13585 add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class
,
13586 &remote_hw_watchpoint_limit
, _("\
13587 Set the maximum number of target hardware watchpoints."), _("\
13588 Show the maximum number of target hardware watchpoints."), _("\
13589 Specify a negative limit for unlimited."),
13590 NULL
, NULL
, /* FIXME: i18n: The maximum
13591 number of target hardware
13592 watchpoints is %s. */
13593 &remote_set_cmdlist
, &remote_show_cmdlist
);
13594 add_setshow_zinteger_cmd ("hardware-watchpoint-length-limit", no_class
,
13595 &remote_hw_watchpoint_length_limit
, _("\
13596 Set the maximum length (in bytes) of a target hardware watchpoint."), _("\
13597 Show the maximum length (in bytes) of a target hardware watchpoint."), _("\
13598 Specify a negative limit for unlimited."),
13599 NULL
, NULL
, /* FIXME: i18n: The maximum
13600 length (in bytes) of a target
13601 hardware watchpoint is %s. */
13602 &remote_set_cmdlist
, &remote_show_cmdlist
);
13603 add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class
,
13604 &remote_hw_breakpoint_limit
, _("\
13605 Set the maximum number of target hardware breakpoints."), _("\
13606 Show the maximum number of target hardware breakpoints."), _("\
13607 Specify a negative limit for unlimited."),
13608 NULL
, NULL
, /* FIXME: i18n: The maximum
13609 number of target hardware
13610 breakpoints is %s. */
13611 &remote_set_cmdlist
, &remote_show_cmdlist
);
13613 add_setshow_zuinteger_cmd ("remoteaddresssize", class_obscure
,
13614 &remote_address_size
, _("\
13615 Set the maximum size of the address (in bits) in a memory packet."), _("\
13616 Show the maximum size of the address (in bits) in a memory packet."), NULL
,
13618 NULL
, /* FIXME: i18n: */
13619 &setlist
, &showlist
);
13621 init_all_packet_configs ();
13623 add_packet_config_cmd (&remote_protocol_packets
[PACKET_X
],
13624 "X", "binary-download", 1);
13626 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vCont
],
13627 "vCont", "verbose-resume", 0);
13629 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QPassSignals
],
13630 "QPassSignals", "pass-signals", 0);
13632 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QCatchSyscalls
],
13633 "QCatchSyscalls", "catch-syscalls", 0);
13635 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QProgramSignals
],
13636 "QProgramSignals", "program-signals", 0);
13638 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSymbol
],
13639 "qSymbol", "symbol-lookup", 0);
13641 add_packet_config_cmd (&remote_protocol_packets
[PACKET_P
],
13642 "P", "set-register", 1);
13644 add_packet_config_cmd (&remote_protocol_packets
[PACKET_p
],
13645 "p", "fetch-register", 1);
13647 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z0
],
13648 "Z0", "software-breakpoint", 0);
13650 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z1
],
13651 "Z1", "hardware-breakpoint", 0);
13653 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z2
],
13654 "Z2", "write-watchpoint", 0);
13656 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z3
],
13657 "Z3", "read-watchpoint", 0);
13659 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z4
],
13660 "Z4", "access-watchpoint", 0);
13662 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_auxv
],
13663 "qXfer:auxv:read", "read-aux-vector", 0);
13665 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_exec_file
],
13666 "qXfer:exec-file:read", "pid-to-exec-file", 0);
13668 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_features
],
13669 "qXfer:features:read", "target-features", 0);
13671 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_libraries
],
13672 "qXfer:libraries:read", "library-info", 0);
13674 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_libraries_svr4
],
13675 "qXfer:libraries-svr4:read", "library-info-svr4", 0);
13677 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_memory_map
],
13678 "qXfer:memory-map:read", "memory-map", 0);
13680 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_spu_read
],
13681 "qXfer:spu:read", "read-spu-object", 0);
13683 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_spu_write
],
13684 "qXfer:spu:write", "write-spu-object", 0);
13686 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_osdata
],
13687 "qXfer:osdata:read", "osdata", 0);
13689 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_threads
],
13690 "qXfer:threads:read", "threads", 0);
13692 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_siginfo_read
],
13693 "qXfer:siginfo:read", "read-siginfo-object", 0);
13695 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_siginfo_write
],
13696 "qXfer:siginfo:write", "write-siginfo-object", 0);
13698 add_packet_config_cmd
13699 (&remote_protocol_packets
[PACKET_qXfer_traceframe_info
],
13700 "qXfer:traceframe-info:read", "traceframe-info", 0);
13702 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_uib
],
13703 "qXfer:uib:read", "unwind-info-block", 0);
13705 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qGetTLSAddr
],
13706 "qGetTLSAddr", "get-thread-local-storage-address",
13709 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qGetTIBAddr
],
13710 "qGetTIBAddr", "get-thread-information-block-address",
13713 add_packet_config_cmd (&remote_protocol_packets
[PACKET_bc
],
13714 "bc", "reverse-continue", 0);
13716 add_packet_config_cmd (&remote_protocol_packets
[PACKET_bs
],
13717 "bs", "reverse-step", 0);
13719 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSupported
],
13720 "qSupported", "supported-packets", 0);
13722 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSearch_memory
],
13723 "qSearch:memory", "search-memory", 0);
13725 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qTStatus
],
13726 "qTStatus", "trace-status", 0);
13728 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_setfs
],
13729 "vFile:setfs", "hostio-setfs", 0);
13731 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_open
],
13732 "vFile:open", "hostio-open", 0);
13734 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_pread
],
13735 "vFile:pread", "hostio-pread", 0);
13737 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_pwrite
],
13738 "vFile:pwrite", "hostio-pwrite", 0);
13740 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_close
],
13741 "vFile:close", "hostio-close", 0);
13743 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_unlink
],
13744 "vFile:unlink", "hostio-unlink", 0);
13746 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_readlink
],
13747 "vFile:readlink", "hostio-readlink", 0);
13749 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_fstat
],
13750 "vFile:fstat", "hostio-fstat", 0);
13752 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vAttach
],
13753 "vAttach", "attach", 0);
13755 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vRun
],
13758 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QStartNoAckMode
],
13759 "QStartNoAckMode", "noack", 0);
13761 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vKill
],
13762 "vKill", "kill", 0);
13764 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qAttached
],
13765 "qAttached", "query-attached", 0);
13767 add_packet_config_cmd (&remote_protocol_packets
[PACKET_ConditionalTracepoints
],
13768 "ConditionalTracepoints",
13769 "conditional-tracepoints", 0);
13771 add_packet_config_cmd (&remote_protocol_packets
[PACKET_ConditionalBreakpoints
],
13772 "ConditionalBreakpoints",
13773 "conditional-breakpoints", 0);
13775 add_packet_config_cmd (&remote_protocol_packets
[PACKET_BreakpointCommands
],
13776 "BreakpointCommands",
13777 "breakpoint-commands", 0);
13779 add_packet_config_cmd (&remote_protocol_packets
[PACKET_FastTracepoints
],
13780 "FastTracepoints", "fast-tracepoints", 0);
13782 add_packet_config_cmd (&remote_protocol_packets
[PACKET_TracepointSource
],
13783 "TracepointSource", "TracepointSource", 0);
13785 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QAllow
],
13786 "QAllow", "allow", 0);
13788 add_packet_config_cmd (&remote_protocol_packets
[PACKET_StaticTracepoints
],
13789 "StaticTracepoints", "static-tracepoints", 0);
13791 add_packet_config_cmd (&remote_protocol_packets
[PACKET_InstallInTrace
],
13792 "InstallInTrace", "install-in-trace", 0);
13794 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_statictrace_read
],
13795 "qXfer:statictrace:read", "read-sdata-object", 0);
13797 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_fdpic
],
13798 "qXfer:fdpic:read", "read-fdpic-loadmap", 0);
13800 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QDisableRandomization
],
13801 "QDisableRandomization", "disable-randomization", 0);
13803 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QAgent
],
13804 "QAgent", "agent", 0);
13806 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QTBuffer_size
],
13807 "QTBuffer:size", "trace-buffer-size", 0);
13809 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Qbtrace_off
],
13810 "Qbtrace:off", "disable-btrace", 0);
13812 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Qbtrace_bts
],
13813 "Qbtrace:bts", "enable-btrace-bts", 0);
13815 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Qbtrace_pt
],
13816 "Qbtrace:pt", "enable-btrace-pt", 0);
13818 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_btrace
],
13819 "qXfer:btrace", "read-btrace", 0);
13821 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_btrace_conf
],
13822 "qXfer:btrace-conf", "read-btrace-conf", 0);
13824 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Qbtrace_conf_bts_size
],
13825 "Qbtrace-conf:bts:size", "btrace-conf-bts-size", 0);
13827 add_packet_config_cmd (&remote_protocol_packets
[PACKET_multiprocess_feature
],
13828 "multiprocess-feature", "multiprocess-feature", 0);
13830 add_packet_config_cmd (&remote_protocol_packets
[PACKET_swbreak_feature
],
13831 "swbreak-feature", "swbreak-feature", 0);
13833 add_packet_config_cmd (&remote_protocol_packets
[PACKET_hwbreak_feature
],
13834 "hwbreak-feature", "hwbreak-feature", 0);
13836 add_packet_config_cmd (&remote_protocol_packets
[PACKET_fork_event_feature
],
13837 "fork-event-feature", "fork-event-feature", 0);
13839 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vfork_event_feature
],
13840 "vfork-event-feature", "vfork-event-feature", 0);
13842 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Qbtrace_conf_pt_size
],
13843 "Qbtrace-conf:pt:size", "btrace-conf-pt-size", 0);
13845 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vContSupported
],
13846 "vContSupported", "verbose-resume-supported", 0);
13848 add_packet_config_cmd (&remote_protocol_packets
[PACKET_exec_event_feature
],
13849 "exec-event-feature", "exec-event-feature", 0);
13851 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vCtrlC
],
13852 "vCtrlC", "ctrl-c", 0);
13854 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QThreadEvents
],
13855 "QThreadEvents", "thread-events", 0);
13857 add_packet_config_cmd (&remote_protocol_packets
[PACKET_no_resumed
],
13858 "N stop reply", "no-resumed-stop-reply", 0);
13860 /* Assert that we've registered "set remote foo-packet" commands
13861 for all packet configs. */
13865 for (i
= 0; i
< PACKET_MAX
; i
++)
13867 /* Ideally all configs would have a command associated. Some
13868 still don't though. */
13873 case PACKET_QNonStop
:
13874 case PACKET_EnableDisableTracepoints_feature
:
13875 case PACKET_tracenz_feature
:
13876 case PACKET_DisconnectedTracing_feature
:
13877 case PACKET_augmented_libraries_svr4_read_feature
:
13879 /* Additions to this list need to be well justified:
13880 pre-existing packets are OK; new packets are not. */
13888 /* This catches both forgetting to add a config command, and
13889 forgetting to remove a packet from the exception list. */
13890 gdb_assert (excepted
== (remote_protocol_packets
[i
].name
== NULL
));
13894 /* Keep the old ``set remote Z-packet ...'' working. Each individual
13895 Z sub-packet has its own set and show commands, but users may
13896 have sets to this variable in their .gdbinit files (or in their
13898 add_setshow_auto_boolean_cmd ("Z-packet", class_obscure
,
13899 &remote_Z_packet_detect
, _("\
13900 Set use of remote protocol `Z' packets"), _("\
13901 Show use of remote protocol `Z' packets "), _("\
13902 When set, GDB will attempt to use the remote breakpoint and watchpoint\n\
13904 set_remote_protocol_Z_packet_cmd
,
13905 show_remote_protocol_Z_packet_cmd
,
13906 /* FIXME: i18n: Use of remote protocol
13907 `Z' packets is %s. */
13908 &remote_set_cmdlist
, &remote_show_cmdlist
);
13910 add_prefix_cmd ("remote", class_files
, remote_command
, _("\
13911 Manipulate files on the remote system\n\
13912 Transfer files to and from the remote target system."),
13913 &remote_cmdlist
, "remote ",
13914 0 /* allow-unknown */, &cmdlist
);
13916 add_cmd ("put", class_files
, remote_put_command
,
13917 _("Copy a local file to the remote system."),
13920 add_cmd ("get", class_files
, remote_get_command
,
13921 _("Copy a remote file to the local system."),
13924 add_cmd ("delete", class_files
, remote_delete_command
,
13925 _("Delete a remote file."),
13928 add_setshow_string_noescape_cmd ("exec-file", class_files
,
13929 &remote_exec_file_var
, _("\
13930 Set the remote pathname for \"run\""), _("\
13931 Show the remote pathname for \"run\""), NULL
,
13932 set_remote_exec_file
,
13933 show_remote_exec_file
,
13934 &remote_set_cmdlist
,
13935 &remote_show_cmdlist
);
13937 add_setshow_boolean_cmd ("range-stepping", class_run
,
13938 &use_range_stepping
, _("\
13939 Enable or disable range stepping."), _("\
13940 Show whether target-assisted range stepping is enabled."), _("\
13941 If on, and the target supports it, when stepping a source line, GDB\n\
13942 tells the target to step the corresponding range of addresses itself instead\n\
13943 of issuing multiple single-steps. This speeds up source level\n\
13944 stepping. If off, GDB always issues single-steps, even if range\n\
13945 stepping is supported by the target. The default is on."),
13946 set_range_stepping
,
13947 show_range_stepping
,
13951 /* Eventually initialize fileio. See fileio.c */
13952 initialize_remote_fileio (remote_set_cmdlist
, remote_show_cmdlist
);
13954 /* Take advantage of the fact that the TID field is not used, to tag
13955 special ptids with it set to != 0. */
13956 magic_null_ptid
= ptid_build (42000, -1, 1);
13957 not_sent_ptid
= ptid_build (42000, -2, 1);
13958 any_thread_ptid
= ptid_build (42000, 0, 1);
13960 target_buf_size
= 2048;
13961 target_buf
= (char *) xmalloc (target_buf_size
);