1 /* Remote target communications for serial-line targets in custom GDB protocol
3 Copyright (C) 1988-2015 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_mourn (struct target_ops
*ops
);
124 static void extended_remote_restart (void);
126 static void extended_remote_mourn (struct target_ops
*);
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
)
770 struct packet_reg
*regs
;
771 struct cleanup
*old_chain
;
773 gdb_assert (regnum
< gdbarch_num_regs (gdbarch
));
775 regs
= XCNEWVEC (struct packet_reg
, gdbarch_num_regs (gdbarch
));
776 old_chain
= make_cleanup (xfree
, regs
);
778 sizeof_g_packet
= map_regcache_remote_table (gdbarch
, regs
);
780 *pnum
= regs
[regnum
].pnum
;
781 *poffset
= regs
[regnum
].offset
;
783 do_cleanups (old_chain
);
789 init_remote_state (struct gdbarch
*gdbarch
)
791 struct remote_state
*rs
= get_remote_state_raw ();
792 struct remote_arch_state
*rsa
;
794 rsa
= GDBARCH_OBSTACK_ZALLOC (gdbarch
, struct remote_arch_state
);
796 /* Use the architecture to build a regnum<->pnum table, which will be
797 1:1 unless a feature set specifies otherwise. */
798 rsa
->regs
= GDBARCH_OBSTACK_CALLOC (gdbarch
,
799 gdbarch_num_regs (gdbarch
),
802 /* Record the maximum possible size of the g packet - it may turn out
804 rsa
->sizeof_g_packet
= map_regcache_remote_table (gdbarch
, rsa
->regs
);
806 /* Default maximum number of characters in a packet body. Many
807 remote stubs have a hardwired buffer size of 400 bytes
808 (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used
809 as the maximum packet-size to ensure that the packet and an extra
810 NUL character can always fit in the buffer. This stops GDB
811 trashing stubs that try to squeeze an extra NUL into what is
812 already a full buffer (As of 1999-12-04 that was most stubs). */
813 rsa
->remote_packet_size
= 400 - 1;
815 /* This one is filled in when a ``g'' packet is received. */
816 rsa
->actual_register_packet_size
= 0;
818 /* Should rsa->sizeof_g_packet needs more space than the
819 default, adjust the size accordingly. Remember that each byte is
820 encoded as two characters. 32 is the overhead for the packet
821 header / footer. NOTE: cagney/1999-10-26: I suspect that 8
822 (``$NN:G...#NN'') is a better guess, the below has been padded a
824 if (rsa
->sizeof_g_packet
> ((rsa
->remote_packet_size
- 32) / 2))
825 rsa
->remote_packet_size
= (rsa
->sizeof_g_packet
* 2 + 32);
827 /* Make sure that the packet buffer is plenty big enough for
828 this architecture. */
829 if (rs
->buf_size
< rsa
->remote_packet_size
)
831 rs
->buf_size
= 2 * rsa
->remote_packet_size
;
832 rs
->buf
= (char *) xrealloc (rs
->buf
, rs
->buf_size
);
838 /* Return the current allowed size of a remote packet. This is
839 inferred from the current architecture, and should be used to
840 limit the length of outgoing packets. */
842 get_remote_packet_size (void)
844 struct remote_state
*rs
= get_remote_state ();
845 struct remote_arch_state
*rsa
= get_remote_arch_state ();
847 if (rs
->explicit_packet_size
)
848 return rs
->explicit_packet_size
;
850 return rsa
->remote_packet_size
;
853 static struct packet_reg
*
854 packet_reg_from_regnum (struct remote_arch_state
*rsa
, long regnum
)
856 if (regnum
< 0 && regnum
>= gdbarch_num_regs (target_gdbarch ()))
860 struct packet_reg
*r
= &rsa
->regs
[regnum
];
862 gdb_assert (r
->regnum
== regnum
);
867 static struct packet_reg
*
868 packet_reg_from_pnum (struct remote_arch_state
*rsa
, LONGEST pnum
)
872 for (i
= 0; i
< gdbarch_num_regs (target_gdbarch ()); i
++)
874 struct packet_reg
*r
= &rsa
->regs
[i
];
882 static struct target_ops remote_ops
;
884 static struct target_ops extended_remote_ops
;
886 /* FIXME: cagney/1999-09-23: Even though getpkt was called with
887 ``forever'' still use the normal timeout mechanism. This is
888 currently used by the ASYNC code to guarentee that target reads
889 during the initial connect always time-out. Once getpkt has been
890 modified to return a timeout indication and, in turn
891 remote_wait()/wait_for_inferior() have gained a timeout parameter
893 static int wait_forever_enabled_p
= 1;
895 /* Allow the user to specify what sequence to send to the remote
896 when he requests a program interruption: Although ^C is usually
897 what remote systems expect (this is the default, here), it is
898 sometimes preferable to send a break. On other systems such
899 as the Linux kernel, a break followed by g, which is Magic SysRq g
900 is required in order to interrupt the execution. */
901 const char interrupt_sequence_control_c
[] = "Ctrl-C";
902 const char interrupt_sequence_break
[] = "BREAK";
903 const char interrupt_sequence_break_g
[] = "BREAK-g";
904 static const char *const interrupt_sequence_modes
[] =
906 interrupt_sequence_control_c
,
907 interrupt_sequence_break
,
908 interrupt_sequence_break_g
,
911 static const char *interrupt_sequence_mode
= interrupt_sequence_control_c
;
914 show_interrupt_sequence (struct ui_file
*file
, int from_tty
,
915 struct cmd_list_element
*c
,
918 if (interrupt_sequence_mode
== interrupt_sequence_control_c
)
919 fprintf_filtered (file
,
920 _("Send the ASCII ETX character (Ctrl-c) "
921 "to the remote target to interrupt the "
922 "execution of the program.\n"));
923 else if (interrupt_sequence_mode
== interrupt_sequence_break
)
924 fprintf_filtered (file
,
925 _("send a break signal to the remote target "
926 "to interrupt the execution of the program.\n"));
927 else if (interrupt_sequence_mode
== interrupt_sequence_break_g
)
928 fprintf_filtered (file
,
929 _("Send a break signal and 'g' a.k.a. Magic SysRq g to "
930 "the remote target to interrupt the execution "
931 "of Linux kernel.\n"));
933 internal_error (__FILE__
, __LINE__
,
934 _("Invalid value for interrupt_sequence_mode: %s."),
935 interrupt_sequence_mode
);
938 /* This boolean variable specifies whether interrupt_sequence is sent
939 to the remote target when gdb connects to it.
940 This is mostly needed when you debug the Linux kernel: The Linux kernel
941 expects BREAK g which is Magic SysRq g for connecting gdb. */
942 static int interrupt_on_connect
= 0;
944 /* This variable is used to implement the "set/show remotebreak" commands.
945 Since these commands are now deprecated in favor of "set/show remote
946 interrupt-sequence", it no longer has any effect on the code. */
947 static int remote_break
;
950 set_remotebreak (char *args
, int from_tty
, struct cmd_list_element
*c
)
953 interrupt_sequence_mode
= interrupt_sequence_break
;
955 interrupt_sequence_mode
= interrupt_sequence_control_c
;
959 show_remotebreak (struct ui_file
*file
, int from_tty
,
960 struct cmd_list_element
*c
,
965 /* This variable sets the number of bits in an address that are to be
966 sent in a memory ("M" or "m") packet. Normally, after stripping
967 leading zeros, the entire address would be sent. This variable
968 restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The
969 initial implementation of remote.c restricted the address sent in
970 memory packets to ``host::sizeof long'' bytes - (typically 32
971 bits). Consequently, for 64 bit targets, the upper 32 bits of an
972 address was never sent. Since fixing this bug may cause a break in
973 some remote targets this variable is principly provided to
974 facilitate backward compatibility. */
976 static unsigned int remote_address_size
;
978 /* Temporary to track who currently owns the terminal. See
979 remote_terminal_* for more details. */
981 static int remote_async_terminal_ours_p
;
984 /* User configurable variables for the number of characters in a
985 memory read/write packet. MIN (rsa->remote_packet_size,
986 rsa->sizeof_g_packet) is the default. Some targets need smaller
987 values (fifo overruns, et.al.) and some users need larger values
988 (speed up transfers). The variables ``preferred_*'' (the user
989 request), ``current_*'' (what was actually set) and ``forced_*''
990 (Positive - a soft limit, negative - a hard limit). */
992 struct memory_packet_config
999 /* The default max memory-write-packet-size. The 16k is historical.
1000 (It came from older GDB's using alloca for buffers and the
1001 knowledge (folklore?) that some hosts don't cope very well with
1002 large alloca calls.) */
1003 #define DEFAULT_MAX_MEMORY_PACKET_SIZE 16384
1005 /* The minimum remote packet size for memory transfers. Ensures we
1006 can write at least one byte. */
1007 #define MIN_MEMORY_PACKET_SIZE 20
1009 /* Compute the current size of a read/write packet. Since this makes
1010 use of ``actual_register_packet_size'' the computation is dynamic. */
1013 get_memory_packet_size (struct memory_packet_config
*config
)
1015 struct remote_state
*rs
= get_remote_state ();
1016 struct remote_arch_state
*rsa
= get_remote_arch_state ();
1019 if (config
->fixed_p
)
1021 if (config
->size
<= 0)
1022 what_they_get
= DEFAULT_MAX_MEMORY_PACKET_SIZE
;
1024 what_they_get
= config
->size
;
1028 what_they_get
= get_remote_packet_size ();
1029 /* Limit the packet to the size specified by the user. */
1030 if (config
->size
> 0
1031 && what_they_get
> config
->size
)
1032 what_they_get
= config
->size
;
1034 /* Limit it to the size of the targets ``g'' response unless we have
1035 permission from the stub to use a larger packet size. */
1036 if (rs
->explicit_packet_size
== 0
1037 && rsa
->actual_register_packet_size
> 0
1038 && what_they_get
> rsa
->actual_register_packet_size
)
1039 what_they_get
= rsa
->actual_register_packet_size
;
1041 if (what_they_get
< MIN_MEMORY_PACKET_SIZE
)
1042 what_they_get
= MIN_MEMORY_PACKET_SIZE
;
1044 /* Make sure there is room in the global buffer for this packet
1045 (including its trailing NUL byte). */
1046 if (rs
->buf_size
< what_they_get
+ 1)
1048 rs
->buf_size
= 2 * what_they_get
;
1049 rs
->buf
= (char *) xrealloc (rs
->buf
, 2 * what_they_get
);
1052 return what_they_get
;
1055 /* Update the size of a read/write packet. If they user wants
1056 something really big then do a sanity check. */
1059 set_memory_packet_size (char *args
, struct memory_packet_config
*config
)
1061 int fixed_p
= config
->fixed_p
;
1062 long size
= config
->size
;
1065 error (_("Argument required (integer, `fixed' or `limited')."));
1066 else if (strcmp (args
, "hard") == 0
1067 || strcmp (args
, "fixed") == 0)
1069 else if (strcmp (args
, "soft") == 0
1070 || strcmp (args
, "limit") == 0)
1076 size
= strtoul (args
, &end
, 0);
1078 error (_("Invalid %s (bad syntax)."), config
->name
);
1080 /* Instead of explicitly capping the size of a packet to or
1081 disallowing it, the user is allowed to set the size to
1082 something arbitrarily large. */
1085 /* So that the query shows the correct value. */
1087 size
= DEFAULT_MAX_MEMORY_PACKET_SIZE
;
1090 if (fixed_p
&& !config
->fixed_p
)
1092 if (! query (_("The target may not be able to correctly handle a %s\n"
1093 "of %ld bytes. Change the packet size? "),
1094 config
->name
, size
))
1095 error (_("Packet size not changed."));
1097 /* Update the config. */
1098 config
->fixed_p
= fixed_p
;
1099 config
->size
= size
;
1103 show_memory_packet_size (struct memory_packet_config
*config
)
1105 printf_filtered (_("The %s is %ld. "), config
->name
, config
->size
);
1106 if (config
->fixed_p
)
1107 printf_filtered (_("Packets are fixed at %ld bytes.\n"),
1108 get_memory_packet_size (config
));
1110 printf_filtered (_("Packets are limited to %ld bytes.\n"),
1111 get_memory_packet_size (config
));
1114 static struct memory_packet_config memory_write_packet_config
=
1116 "memory-write-packet-size",
1120 set_memory_write_packet_size (char *args
, int from_tty
)
1122 set_memory_packet_size (args
, &memory_write_packet_config
);
1126 show_memory_write_packet_size (char *args
, int from_tty
)
1128 show_memory_packet_size (&memory_write_packet_config
);
1132 get_memory_write_packet_size (void)
1134 return get_memory_packet_size (&memory_write_packet_config
);
1137 static struct memory_packet_config memory_read_packet_config
=
1139 "memory-read-packet-size",
1143 set_memory_read_packet_size (char *args
, int from_tty
)
1145 set_memory_packet_size (args
, &memory_read_packet_config
);
1149 show_memory_read_packet_size (char *args
, int from_tty
)
1151 show_memory_packet_size (&memory_read_packet_config
);
1155 get_memory_read_packet_size (void)
1157 long size
= get_memory_packet_size (&memory_read_packet_config
);
1159 /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an
1160 extra buffer size argument before the memory read size can be
1161 increased beyond this. */
1162 if (size
> get_remote_packet_size ())
1163 size
= get_remote_packet_size ();
1168 /* Generic configuration support for packets the stub optionally
1169 supports. Allows the user to specify the use of the packet as well
1170 as allowing GDB to auto-detect support in the remote stub. */
1174 PACKET_SUPPORT_UNKNOWN
= 0,
1179 struct packet_config
1184 /* If auto, GDB auto-detects support for this packet or feature,
1185 either through qSupported, or by trying the packet and looking
1186 at the response. If true, GDB assumes the target supports this
1187 packet. If false, the packet is disabled. Configs that don't
1188 have an associated command always have this set to auto. */
1189 enum auto_boolean detect
;
1191 /* Does the target support this packet? */
1192 enum packet_support support
;
1195 /* Analyze a packet's return value and update the packet config
1205 static enum packet_support
packet_config_support (struct packet_config
*config
);
1206 static enum packet_support
packet_support (int packet
);
1209 show_packet_config_cmd (struct packet_config
*config
)
1211 char *support
= "internal-error";
1213 switch (packet_config_support (config
))
1216 support
= "enabled";
1218 case PACKET_DISABLE
:
1219 support
= "disabled";
1221 case PACKET_SUPPORT_UNKNOWN
:
1222 support
= "unknown";
1225 switch (config
->detect
)
1227 case AUTO_BOOLEAN_AUTO
:
1228 printf_filtered (_("Support for the `%s' packet "
1229 "is auto-detected, currently %s.\n"),
1230 config
->name
, support
);
1232 case AUTO_BOOLEAN_TRUE
:
1233 case AUTO_BOOLEAN_FALSE
:
1234 printf_filtered (_("Support for the `%s' packet is currently %s.\n"),
1235 config
->name
, support
);
1241 add_packet_config_cmd (struct packet_config
*config
, const char *name
,
1242 const char *title
, int legacy
)
1248 config
->name
= name
;
1249 config
->title
= title
;
1250 set_doc
= xstrprintf ("Set use of remote protocol `%s' (%s) packet",
1252 show_doc
= xstrprintf ("Show current use of remote "
1253 "protocol `%s' (%s) packet",
1255 /* set/show TITLE-packet {auto,on,off} */
1256 cmd_name
= xstrprintf ("%s-packet", title
);
1257 add_setshow_auto_boolean_cmd (cmd_name
, class_obscure
,
1258 &config
->detect
, set_doc
,
1259 show_doc
, NULL
, /* help_doc */
1261 show_remote_protocol_packet_cmd
,
1262 &remote_set_cmdlist
, &remote_show_cmdlist
);
1263 /* The command code copies the documentation strings. */
1266 /* set/show remote NAME-packet {auto,on,off} -- legacy. */
1271 legacy_name
= xstrprintf ("%s-packet", name
);
1272 add_alias_cmd (legacy_name
, cmd_name
, class_obscure
, 0,
1273 &remote_set_cmdlist
);
1274 add_alias_cmd (legacy_name
, cmd_name
, class_obscure
, 0,
1275 &remote_show_cmdlist
);
1279 static enum packet_result
1280 packet_check_result (const char *buf
)
1284 /* The stub recognized the packet request. Check that the
1285 operation succeeded. */
1287 && isxdigit (buf
[1]) && isxdigit (buf
[2])
1289 /* "Enn" - definitly an error. */
1290 return PACKET_ERROR
;
1292 /* Always treat "E." as an error. This will be used for
1293 more verbose error messages, such as E.memtypes. */
1294 if (buf
[0] == 'E' && buf
[1] == '.')
1295 return PACKET_ERROR
;
1297 /* The packet may or may not be OK. Just assume it is. */
1301 /* The stub does not support the packet. */
1302 return PACKET_UNKNOWN
;
1305 static enum packet_result
1306 packet_ok (const char *buf
, struct packet_config
*config
)
1308 enum packet_result result
;
1310 if (config
->detect
!= AUTO_BOOLEAN_TRUE
1311 && config
->support
== PACKET_DISABLE
)
1312 internal_error (__FILE__
, __LINE__
,
1313 _("packet_ok: attempt to use a disabled packet"));
1315 result
= packet_check_result (buf
);
1320 /* The stub recognized the packet request. */
1321 if (config
->support
== PACKET_SUPPORT_UNKNOWN
)
1324 fprintf_unfiltered (gdb_stdlog
,
1325 "Packet %s (%s) is supported\n",
1326 config
->name
, config
->title
);
1327 config
->support
= PACKET_ENABLE
;
1330 case PACKET_UNKNOWN
:
1331 /* The stub does not support the packet. */
1332 if (config
->detect
== AUTO_BOOLEAN_AUTO
1333 && config
->support
== PACKET_ENABLE
)
1335 /* If the stub previously indicated that the packet was
1336 supported then there is a protocol error. */
1337 error (_("Protocol error: %s (%s) conflicting enabled responses."),
1338 config
->name
, config
->title
);
1340 else if (config
->detect
== AUTO_BOOLEAN_TRUE
)
1342 /* The user set it wrong. */
1343 error (_("Enabled packet %s (%s) not recognized by stub"),
1344 config
->name
, config
->title
);
1348 fprintf_unfiltered (gdb_stdlog
,
1349 "Packet %s (%s) is NOT supported\n",
1350 config
->name
, config
->title
);
1351 config
->support
= PACKET_DISABLE
;
1372 PACKET_vFile_pwrite
,
1374 PACKET_vFile_unlink
,
1375 PACKET_vFile_readlink
,
1378 PACKET_qXfer_features
,
1379 PACKET_qXfer_exec_file
,
1380 PACKET_qXfer_libraries
,
1381 PACKET_qXfer_libraries_svr4
,
1382 PACKET_qXfer_memory_map
,
1383 PACKET_qXfer_spu_read
,
1384 PACKET_qXfer_spu_write
,
1385 PACKET_qXfer_osdata
,
1386 PACKET_qXfer_threads
,
1387 PACKET_qXfer_statictrace_read
,
1388 PACKET_qXfer_traceframe_info
,
1394 PACKET_QPassSignals
,
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
)
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
, running
);
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. */
1830 remote_notice_new_inferior (ptid_t currthread
, int running
)
1832 /* If this is a new thread, add it to GDB's thread list.
1833 If we leave it up to WFI to do this, bad things will happen. */
1835 if (in_thread_list (currthread
) && is_exited (currthread
))
1837 /* We're seeing an event on a thread id we knew had exited.
1838 This has to be a new thread reusing the old id. Add it. */
1839 remote_add_thread (currthread
, running
);
1843 if (!in_thread_list (currthread
))
1845 struct inferior
*inf
= NULL
;
1846 int pid
= ptid_get_pid (currthread
);
1848 if (ptid_is_pid (inferior_ptid
)
1849 && pid
== ptid_get_pid (inferior_ptid
))
1851 /* inferior_ptid has no thread member yet. This can happen
1852 with the vAttach -> remote_wait,"TAAthread:" path if the
1853 stub doesn't support qC. This is the first stop reported
1854 after an attach, so this is the main thread. Update the
1855 ptid in the thread list. */
1856 if (in_thread_list (pid_to_ptid (pid
)))
1857 thread_change_ptid (inferior_ptid
, currthread
);
1860 remote_add_thread (currthread
, running
);
1861 inferior_ptid
= currthread
;
1866 if (ptid_equal (magic_null_ptid
, inferior_ptid
))
1868 /* inferior_ptid is not set yet. This can happen with the
1869 vRun -> remote_wait,"TAAthread:" path if the stub
1870 doesn't support qC. This is the first stop reported
1871 after an attach, so this is the main thread. Update the
1872 ptid in the thread list. */
1873 thread_change_ptid (inferior_ptid
, currthread
);
1877 /* When connecting to a target remote, or to a target
1878 extended-remote which already was debugging an inferior, we
1879 may not know about it yet. Add it before adding its child
1880 thread, so notifications are emitted in a sensible order. */
1881 if (!in_inferior_list (ptid_get_pid (currthread
)))
1883 struct remote_state
*rs
= get_remote_state ();
1884 int fake_pid_p
= !remote_multi_process_p (rs
);
1886 inf
= remote_add_inferior (fake_pid_p
,
1887 ptid_get_pid (currthread
), -1, 1);
1890 /* This is really a new thread. Add it. */
1891 remote_add_thread (currthread
, running
);
1893 /* If we found a new inferior, let the common code do whatever
1894 it needs to with it (e.g., read shared libraries, insert
1895 breakpoints), unless we're just setting up an all-stop
1899 struct remote_state
*rs
= get_remote_state ();
1901 if (!rs
->starting_up
)
1902 notice_new_inferior (currthread
, running
, 0);
1907 /* Return the private thread data, creating it if necessary. */
1909 static struct private_thread_info
*
1910 demand_private_info (ptid_t ptid
)
1912 struct thread_info
*info
= find_thread_ptid (ptid
);
1918 info
->priv
= XNEW (struct private_thread_info
);
1919 info
->private_dtor
= free_private_thread_info
;
1920 info
->priv
->core
= -1;
1921 info
->priv
->extra
= 0;
1927 /* Call this function as a result of
1928 1) A halt indication (T packet) containing a thread id
1929 2) A direct query of currthread
1930 3) Successful execution of set thread */
1933 record_currthread (struct remote_state
*rs
, ptid_t currthread
)
1935 rs
->general_thread
= currthread
;
1938 /* If 'QPassSignals' is supported, tell the remote stub what signals
1939 it can simply pass through to the inferior without reporting. */
1942 remote_pass_signals (struct target_ops
*self
,
1943 int numsigs
, unsigned char *pass_signals
)
1945 if (packet_support (PACKET_QPassSignals
) != PACKET_DISABLE
)
1947 char *pass_packet
, *p
;
1949 struct remote_state
*rs
= get_remote_state ();
1951 gdb_assert (numsigs
< 256);
1952 for (i
= 0; i
< numsigs
; i
++)
1954 if (pass_signals
[i
])
1957 pass_packet
= (char *) xmalloc (count
* 3 + strlen ("QPassSignals:") + 1);
1958 strcpy (pass_packet
, "QPassSignals:");
1959 p
= pass_packet
+ strlen (pass_packet
);
1960 for (i
= 0; i
< numsigs
; i
++)
1962 if (pass_signals
[i
])
1965 *p
++ = tohex (i
>> 4);
1966 *p
++ = tohex (i
& 15);
1975 if (!rs
->last_pass_packet
|| strcmp (rs
->last_pass_packet
, pass_packet
))
1977 putpkt (pass_packet
);
1978 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1979 packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_QPassSignals
]);
1980 if (rs
->last_pass_packet
)
1981 xfree (rs
->last_pass_packet
);
1982 rs
->last_pass_packet
= pass_packet
;
1985 xfree (pass_packet
);
1989 /* If 'QProgramSignals' is supported, tell the remote stub what
1990 signals it should pass through to the inferior when detaching. */
1993 remote_program_signals (struct target_ops
*self
,
1994 int numsigs
, unsigned char *signals
)
1996 if (packet_support (PACKET_QProgramSignals
) != PACKET_DISABLE
)
2000 struct remote_state
*rs
= get_remote_state ();
2002 gdb_assert (numsigs
< 256);
2003 for (i
= 0; i
< numsigs
; i
++)
2008 packet
= (char *) xmalloc (count
* 3 + strlen ("QProgramSignals:") + 1);
2009 strcpy (packet
, "QProgramSignals:");
2010 p
= packet
+ strlen (packet
);
2011 for (i
= 0; i
< numsigs
; i
++)
2013 if (signal_pass_state (i
))
2016 *p
++ = tohex (i
>> 4);
2017 *p
++ = tohex (i
& 15);
2026 if (!rs
->last_program_signals_packet
2027 || strcmp (rs
->last_program_signals_packet
, packet
) != 0)
2030 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2031 packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_QProgramSignals
]);
2032 xfree (rs
->last_program_signals_packet
);
2033 rs
->last_program_signals_packet
= packet
;
2040 /* If PTID is MAGIC_NULL_PTID, don't set any thread. If PTID is
2041 MINUS_ONE_PTID, set the thread to -1, so the stub returns the
2042 thread. If GEN is set, set the general thread, if not, then set
2043 the step/continue thread. */
2045 set_thread (struct ptid ptid
, int gen
)
2047 struct remote_state
*rs
= get_remote_state ();
2048 ptid_t state
= gen
? rs
->general_thread
: rs
->continue_thread
;
2049 char *buf
= rs
->buf
;
2050 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
2052 if (ptid_equal (state
, ptid
))
2056 *buf
++ = gen
? 'g' : 'c';
2057 if (ptid_equal (ptid
, magic_null_ptid
))
2058 xsnprintf (buf
, endbuf
- buf
, "0");
2059 else if (ptid_equal (ptid
, any_thread_ptid
))
2060 xsnprintf (buf
, endbuf
- buf
, "0");
2061 else if (ptid_equal (ptid
, minus_one_ptid
))
2062 xsnprintf (buf
, endbuf
- buf
, "-1");
2064 write_ptid (buf
, endbuf
, ptid
);
2066 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2068 rs
->general_thread
= ptid
;
2070 rs
->continue_thread
= ptid
;
2074 set_general_thread (struct ptid ptid
)
2076 set_thread (ptid
, 1);
2080 set_continue_thread (struct ptid ptid
)
2082 set_thread (ptid
, 0);
2085 /* Change the remote current process. Which thread within the process
2086 ends up selected isn't important, as long as it is the same process
2087 as what INFERIOR_PTID points to.
2089 This comes from that fact that there is no explicit notion of
2090 "selected process" in the protocol. The selected process for
2091 general operations is the process the selected general thread
2095 set_general_process (void)
2097 struct remote_state
*rs
= get_remote_state ();
2099 /* If the remote can't handle multiple processes, don't bother. */
2100 if (!rs
->extended
|| !remote_multi_process_p (rs
))
2103 /* We only need to change the remote current thread if it's pointing
2104 at some other process. */
2105 if (ptid_get_pid (rs
->general_thread
) != ptid_get_pid (inferior_ptid
))
2106 set_general_thread (inferior_ptid
);
2110 /* Return nonzero if this is the main thread that we made up ourselves
2111 to model non-threaded targets as single-threaded. */
2114 remote_thread_always_alive (struct target_ops
*ops
, ptid_t ptid
)
2116 struct remote_state
*rs
= get_remote_state ();
2119 if (ptid_equal (ptid
, magic_null_ptid
))
2120 /* The main thread is always alive. */
2123 if (ptid_get_pid (ptid
) != 0 && ptid_get_lwp (ptid
) == 0)
2124 /* The main thread is always alive. This can happen after a
2125 vAttach, if the remote side doesn't support
2132 /* Return nonzero if the thread PTID is still alive on the remote
2136 remote_thread_alive (struct target_ops
*ops
, ptid_t ptid
)
2138 struct remote_state
*rs
= get_remote_state ();
2141 /* Check if this is a thread that we made up ourselves to model
2142 non-threaded targets as single-threaded. */
2143 if (remote_thread_always_alive (ops
, ptid
))
2147 endp
= rs
->buf
+ get_remote_packet_size ();
2150 write_ptid (p
, endp
, ptid
);
2153 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2154 return (rs
->buf
[0] == 'O' && rs
->buf
[1] == 'K');
2157 /* Return a pointer to a thread name if we know it and NULL otherwise.
2158 The thread_info object owns the memory for the name. */
2161 remote_thread_name (struct target_ops
*ops
, struct thread_info
*info
)
2163 if (info
->priv
!= NULL
)
2164 return info
->priv
->name
;
2169 /* About these extended threadlist and threadinfo packets. They are
2170 variable length packets but, the fields within them are often fixed
2171 length. They are redundent enough to send over UDP as is the
2172 remote protocol in general. There is a matching unit test module
2175 /* WARNING: This threadref data structure comes from the remote O.S.,
2176 libstub protocol encoding, and remote.c. It is not particularly
2179 /* Right now, the internal structure is int. We want it to be bigger.
2180 Plan to fix this. */
2182 typedef int gdb_threadref
; /* Internal GDB thread reference. */
2184 /* gdb_ext_thread_info is an internal GDB data structure which is
2185 equivalent to the reply of the remote threadinfo packet. */
2187 struct gdb_ext_thread_info
2189 threadref threadid
; /* External form of thread reference. */
2190 int active
; /* Has state interesting to GDB?
2192 char display
[256]; /* Brief state display, name,
2193 blocked/suspended. */
2194 char shortname
[32]; /* To be used to name threads. */
2195 char more_display
[256]; /* Long info, statistics, queue depth,
2199 /* The volume of remote transfers can be limited by submitting
2200 a mask containing bits specifying the desired information.
2201 Use a union of these values as the 'selection' parameter to
2202 get_thread_info. FIXME: Make these TAG names more thread specific. */
2204 #define TAG_THREADID 1
2205 #define TAG_EXISTS 2
2206 #define TAG_DISPLAY 4
2207 #define TAG_THREADNAME 8
2208 #define TAG_MOREDISPLAY 16
2210 #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2)
2212 static char *unpack_nibble (char *buf
, int *val
);
2214 static char *unpack_byte (char *buf
, int *value
);
2216 static char *pack_int (char *buf
, int value
);
2218 static char *unpack_int (char *buf
, int *value
);
2220 static char *unpack_string (char *src
, char *dest
, int length
);
2222 static char *pack_threadid (char *pkt
, threadref
*id
);
2224 static char *unpack_threadid (char *inbuf
, threadref
*id
);
2226 void int_to_threadref (threadref
*id
, int value
);
2228 static int threadref_to_int (threadref
*ref
);
2230 static void copy_threadref (threadref
*dest
, threadref
*src
);
2232 static int threadmatch (threadref
*dest
, threadref
*src
);
2234 static char *pack_threadinfo_request (char *pkt
, int mode
,
2237 static int remote_unpack_thread_info_response (char *pkt
,
2238 threadref
*expectedref
,
2239 struct gdb_ext_thread_info
2243 static int remote_get_threadinfo (threadref
*threadid
,
2244 int fieldset
, /*TAG mask */
2245 struct gdb_ext_thread_info
*info
);
2247 static char *pack_threadlist_request (char *pkt
, int startflag
,
2249 threadref
*nextthread
);
2251 static int parse_threadlist_response (char *pkt
,
2253 threadref
*original_echo
,
2254 threadref
*resultlist
,
2257 static int remote_get_threadlist (int startflag
,
2258 threadref
*nextthread
,
2262 threadref
*threadlist
);
2264 typedef int (*rmt_thread_action
) (threadref
*ref
, void *context
);
2266 static int remote_threadlist_iterator (rmt_thread_action stepfunction
,
2267 void *context
, int looplimit
);
2269 static int remote_newthread_step (threadref
*ref
, void *context
);
2272 /* Write a PTID to BUF. ENDBUF points to one-passed-the-end of the
2273 buffer we're allowed to write to. Returns
2274 BUF+CHARACTERS_WRITTEN. */
2277 write_ptid (char *buf
, const char *endbuf
, ptid_t ptid
)
2280 struct remote_state
*rs
= get_remote_state ();
2282 if (remote_multi_process_p (rs
))
2284 pid
= ptid_get_pid (ptid
);
2286 buf
+= xsnprintf (buf
, endbuf
- buf
, "p-%x.", -pid
);
2288 buf
+= xsnprintf (buf
, endbuf
- buf
, "p%x.", pid
);
2290 tid
= ptid_get_lwp (ptid
);
2292 buf
+= xsnprintf (buf
, endbuf
- buf
, "-%x", -tid
);
2294 buf
+= xsnprintf (buf
, endbuf
- buf
, "%x", tid
);
2299 /* Extract a PTID from BUF. If non-null, OBUF is set to the to one
2300 passed the last parsed char. Returns null_ptid on error. */
2303 read_ptid (char *buf
, char **obuf
)
2307 ULONGEST pid
= 0, tid
= 0;
2311 /* Multi-process ptid. */
2312 pp
= unpack_varlen_hex (p
+ 1, &pid
);
2314 error (_("invalid remote ptid: %s"), p
);
2317 pp
= unpack_varlen_hex (p
+ 1, &tid
);
2320 return ptid_build (pid
, tid
, 0);
2323 /* No multi-process. Just a tid. */
2324 pp
= unpack_varlen_hex (p
, &tid
);
2326 /* Return null_ptid when no thread id is found. */
2334 /* Since the stub is not sending a process id, then default to
2335 what's in inferior_ptid, unless it's null at this point. If so,
2336 then since there's no way to know the pid of the reported
2337 threads, use the magic number. */
2338 if (ptid_equal (inferior_ptid
, null_ptid
))
2339 pid
= ptid_get_pid (magic_null_ptid
);
2341 pid
= ptid_get_pid (inferior_ptid
);
2345 return ptid_build (pid
, tid
, 0);
2351 if (ch
>= 'a' && ch
<= 'f')
2352 return ch
- 'a' + 10;
2353 if (ch
>= '0' && ch
<= '9')
2355 if (ch
>= 'A' && ch
<= 'F')
2356 return ch
- 'A' + 10;
2361 stub_unpack_int (char *buff
, int fieldlength
)
2368 nibble
= stubhex (*buff
++);
2372 retval
= retval
<< 4;
2378 unpack_nibble (char *buf
, int *val
)
2380 *val
= fromhex (*buf
++);
2385 unpack_byte (char *buf
, int *value
)
2387 *value
= stub_unpack_int (buf
, 2);
2392 pack_int (char *buf
, int value
)
2394 buf
= pack_hex_byte (buf
, (value
>> 24) & 0xff);
2395 buf
= pack_hex_byte (buf
, (value
>> 16) & 0xff);
2396 buf
= pack_hex_byte (buf
, (value
>> 8) & 0x0ff);
2397 buf
= pack_hex_byte (buf
, (value
& 0xff));
2402 unpack_int (char *buf
, int *value
)
2404 *value
= stub_unpack_int (buf
, 8);
2408 #if 0 /* Currently unused, uncomment when needed. */
2409 static char *pack_string (char *pkt
, char *string
);
2412 pack_string (char *pkt
, char *string
)
2417 len
= strlen (string
);
2419 len
= 200; /* Bigger than most GDB packets, junk??? */
2420 pkt
= pack_hex_byte (pkt
, len
);
2424 if ((ch
== '\0') || (ch
== '#'))
2425 ch
= '*'; /* Protect encapsulation. */
2430 #endif /* 0 (unused) */
2433 unpack_string (char *src
, char *dest
, int length
)
2442 pack_threadid (char *pkt
, threadref
*id
)
2445 unsigned char *altid
;
2447 altid
= (unsigned char *) id
;
2448 limit
= pkt
+ BUF_THREAD_ID_SIZE
;
2450 pkt
= pack_hex_byte (pkt
, *altid
++);
2456 unpack_threadid (char *inbuf
, threadref
*id
)
2459 char *limit
= inbuf
+ BUF_THREAD_ID_SIZE
;
2462 altref
= (char *) id
;
2464 while (inbuf
< limit
)
2466 x
= stubhex (*inbuf
++);
2467 y
= stubhex (*inbuf
++);
2468 *altref
++ = (x
<< 4) | y
;
2473 /* Externally, threadrefs are 64 bits but internally, they are still
2474 ints. This is due to a mismatch of specifications. We would like
2475 to use 64bit thread references internally. This is an adapter
2479 int_to_threadref (threadref
*id
, int value
)
2481 unsigned char *scan
;
2483 scan
= (unsigned char *) id
;
2489 *scan
++ = (value
>> 24) & 0xff;
2490 *scan
++ = (value
>> 16) & 0xff;
2491 *scan
++ = (value
>> 8) & 0xff;
2492 *scan
++ = (value
& 0xff);
2496 threadref_to_int (threadref
*ref
)
2499 unsigned char *scan
;
2505 value
= (value
<< 8) | ((*scan
++) & 0xff);
2510 copy_threadref (threadref
*dest
, threadref
*src
)
2513 unsigned char *csrc
, *cdest
;
2515 csrc
= (unsigned char *) src
;
2516 cdest
= (unsigned char *) dest
;
2523 threadmatch (threadref
*dest
, threadref
*src
)
2525 /* Things are broken right now, so just assume we got a match. */
2527 unsigned char *srcp
, *destp
;
2529 srcp
= (char *) src
;
2530 destp
= (char *) dest
;
2534 result
&= (*srcp
++ == *destp
++) ? 1 : 0;
2541 threadid:1, # always request threadid
2548 /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */
2551 pack_threadinfo_request (char *pkt
, int mode
, threadref
*id
)
2553 *pkt
++ = 'q'; /* Info Query */
2554 *pkt
++ = 'P'; /* process or thread info */
2555 pkt
= pack_int (pkt
, mode
); /* mode */
2556 pkt
= pack_threadid (pkt
, id
); /* threadid */
2557 *pkt
= '\0'; /* terminate */
2561 /* These values tag the fields in a thread info response packet. */
2562 /* Tagging the fields allows us to request specific fields and to
2563 add more fields as time goes by. */
2565 #define TAG_THREADID 1 /* Echo the thread identifier. */
2566 #define TAG_EXISTS 2 /* Is this process defined enough to
2567 fetch registers and its stack? */
2568 #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */
2569 #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */
2570 #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about
2574 remote_unpack_thread_info_response (char *pkt
, threadref
*expectedref
,
2575 struct gdb_ext_thread_info
*info
)
2577 struct remote_state
*rs
= get_remote_state ();
2581 char *limit
= pkt
+ rs
->buf_size
; /* Plausible parsing limit. */
2584 /* info->threadid = 0; FIXME: implement zero_threadref. */
2586 info
->display
[0] = '\0';
2587 info
->shortname
[0] = '\0';
2588 info
->more_display
[0] = '\0';
2590 /* Assume the characters indicating the packet type have been
2592 pkt
= unpack_int (pkt
, &mask
); /* arg mask */
2593 pkt
= unpack_threadid (pkt
, &ref
);
2596 warning (_("Incomplete response to threadinfo request."));
2597 if (!threadmatch (&ref
, expectedref
))
2598 { /* This is an answer to a different request. */
2599 warning (_("ERROR RMT Thread info mismatch."));
2602 copy_threadref (&info
->threadid
, &ref
);
2604 /* Loop on tagged fields , try to bail if somthing goes wrong. */
2606 /* Packets are terminated with nulls. */
2607 while ((pkt
< limit
) && mask
&& *pkt
)
2609 pkt
= unpack_int (pkt
, &tag
); /* tag */
2610 pkt
= unpack_byte (pkt
, &length
); /* length */
2611 if (!(tag
& mask
)) /* Tags out of synch with mask. */
2613 warning (_("ERROR RMT: threadinfo tag mismatch."));
2617 if (tag
== TAG_THREADID
)
2621 warning (_("ERROR RMT: length of threadid is not 16."));
2625 pkt
= unpack_threadid (pkt
, &ref
);
2626 mask
= mask
& ~TAG_THREADID
;
2629 if (tag
== TAG_EXISTS
)
2631 info
->active
= stub_unpack_int (pkt
, length
);
2633 mask
= mask
& ~(TAG_EXISTS
);
2636 warning (_("ERROR RMT: 'exists' length too long."));
2642 if (tag
== TAG_THREADNAME
)
2644 pkt
= unpack_string (pkt
, &info
->shortname
[0], length
);
2645 mask
= mask
& ~TAG_THREADNAME
;
2648 if (tag
== TAG_DISPLAY
)
2650 pkt
= unpack_string (pkt
, &info
->display
[0], length
);
2651 mask
= mask
& ~TAG_DISPLAY
;
2654 if (tag
== TAG_MOREDISPLAY
)
2656 pkt
= unpack_string (pkt
, &info
->more_display
[0], length
);
2657 mask
= mask
& ~TAG_MOREDISPLAY
;
2660 warning (_("ERROR RMT: unknown thread info tag."));
2661 break; /* Not a tag we know about. */
2667 remote_get_threadinfo (threadref
*threadid
, int fieldset
, /* TAG mask */
2668 struct gdb_ext_thread_info
*info
)
2670 struct remote_state
*rs
= get_remote_state ();
2673 pack_threadinfo_request (rs
->buf
, fieldset
, threadid
);
2675 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2677 if (rs
->buf
[0] == '\0')
2680 result
= remote_unpack_thread_info_response (rs
->buf
+ 2,
2685 /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */
2688 pack_threadlist_request (char *pkt
, int startflag
, int threadcount
,
2689 threadref
*nextthread
)
2691 *pkt
++ = 'q'; /* info query packet */
2692 *pkt
++ = 'L'; /* Process LIST or threadLIST request */
2693 pkt
= pack_nibble (pkt
, startflag
); /* initflag 1 bytes */
2694 pkt
= pack_hex_byte (pkt
, threadcount
); /* threadcount 2 bytes */
2695 pkt
= pack_threadid (pkt
, nextthread
); /* 64 bit thread identifier */
2700 /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */
2703 parse_threadlist_response (char *pkt
, int result_limit
,
2704 threadref
*original_echo
, threadref
*resultlist
,
2707 struct remote_state
*rs
= get_remote_state ();
2709 int count
, resultcount
, done
;
2712 /* Assume the 'q' and 'M chars have been stripped. */
2713 limit
= pkt
+ (rs
->buf_size
- BUF_THREAD_ID_SIZE
);
2714 /* done parse past here */
2715 pkt
= unpack_byte (pkt
, &count
); /* count field */
2716 pkt
= unpack_nibble (pkt
, &done
);
2717 /* The first threadid is the argument threadid. */
2718 pkt
= unpack_threadid (pkt
, original_echo
); /* should match query packet */
2719 while ((count
-- > 0) && (pkt
< limit
))
2721 pkt
= unpack_threadid (pkt
, resultlist
++);
2722 if (resultcount
++ >= result_limit
)
2730 /* Fetch the next batch of threads from the remote. Returns -1 if the
2731 qL packet is not supported, 0 on error and 1 on success. */
2734 remote_get_threadlist (int startflag
, threadref
*nextthread
, int result_limit
,
2735 int *done
, int *result_count
, threadref
*threadlist
)
2737 struct remote_state
*rs
= get_remote_state ();
2740 /* Trancate result limit to be smaller than the packet size. */
2741 if ((((result_limit
+ 1) * BUF_THREAD_ID_SIZE
) + 10)
2742 >= get_remote_packet_size ())
2743 result_limit
= (get_remote_packet_size () / BUF_THREAD_ID_SIZE
) - 2;
2745 pack_threadlist_request (rs
->buf
, startflag
, result_limit
, nextthread
);
2747 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2748 if (*rs
->buf
== '\0')
2750 /* Packet not supported. */
2755 parse_threadlist_response (rs
->buf
+ 2, result_limit
,
2756 &rs
->echo_nextthread
, threadlist
, done
);
2758 if (!threadmatch (&rs
->echo_nextthread
, nextthread
))
2760 /* FIXME: This is a good reason to drop the packet. */
2761 /* Possably, there is a duplicate response. */
2763 retransmit immediatly - race conditions
2764 retransmit after timeout - yes
2766 wait for packet, then exit
2768 warning (_("HMM: threadlist did not echo arg thread, dropping it."));
2769 return 0; /* I choose simply exiting. */
2771 if (*result_count
<= 0)
2775 warning (_("RMT ERROR : failed to get remote thread list."));
2778 return result
; /* break; */
2780 if (*result_count
> result_limit
)
2783 warning (_("RMT ERROR: threadlist response longer than requested."));
2789 /* Fetch the list of remote threads, with the qL packet, and call
2790 STEPFUNCTION for each thread found. Stops iterating and returns 1
2791 if STEPFUNCTION returns true. Stops iterating and returns 0 if the
2792 STEPFUNCTION returns false. If the packet is not supported,
2796 remote_threadlist_iterator (rmt_thread_action stepfunction
, void *context
,
2799 struct remote_state
*rs
= get_remote_state ();
2800 int done
, i
, result_count
;
2808 if (loopcount
++ > looplimit
)
2811 warning (_("Remote fetch threadlist -infinite loop-."));
2814 result
= remote_get_threadlist (startflag
, &rs
->nextthread
,
2815 MAXTHREADLISTRESULTS
,
2816 &done
, &result_count
,
2817 rs
->resultthreadlist
);
2820 /* Clear for later iterations. */
2822 /* Setup to resume next batch of thread references, set nextthread. */
2823 if (result_count
>= 1)
2824 copy_threadref (&rs
->nextthread
,
2825 &rs
->resultthreadlist
[result_count
- 1]);
2827 while (result_count
--)
2829 if (!(*stepfunction
) (&rs
->resultthreadlist
[i
++], context
))
2839 /* A thread found on the remote target. */
2841 typedef struct thread_item
2843 /* The thread's PTID. */
2846 /* The thread's extra info. May be NULL. */
2849 /* The thread's name. May be NULL. */
2852 /* The core the thread was running on. -1 if not known. */
2855 DEF_VEC_O(thread_item_t
);
2857 /* Context passed around to the various methods listing remote
2858 threads. As new threads are found, they're added to the ITEMS
2861 struct threads_listing_context
2863 /* The threads found on the remote target. */
2864 VEC (thread_item_t
) *items
;
2867 /* Discard the contents of the constructed thread listing context. */
2870 clear_threads_listing_context (void *p
)
2872 struct threads_listing_context
*context
2873 = (struct threads_listing_context
*) p
;
2875 struct thread_item
*item
;
2877 for (i
= 0; VEC_iterate (thread_item_t
, context
->items
, i
, item
); ++i
)
2879 xfree (item
->extra
);
2883 VEC_free (thread_item_t
, context
->items
);
2886 /* Remove the thread specified as the related_pid field of WS
2887 from the CONTEXT list. */
2890 threads_listing_context_remove (struct target_waitstatus
*ws
,
2891 struct threads_listing_context
*context
)
2893 struct thread_item
*item
;
2895 ptid_t child_ptid
= ws
->value
.related_pid
;
2897 for (i
= 0; VEC_iterate (thread_item_t
, context
->items
, i
, item
); ++i
)
2899 if (ptid_equal (item
->ptid
, child_ptid
))
2901 VEC_ordered_remove (thread_item_t
, context
->items
, i
);
2908 remote_newthread_step (threadref
*ref
, void *data
)
2910 struct threads_listing_context
*context
2911 = (struct threads_listing_context
*) data
;
2912 struct thread_item item
;
2913 int pid
= ptid_get_pid (inferior_ptid
);
2915 item
.ptid
= ptid_build (pid
, threadref_to_int (ref
), 0);
2919 VEC_safe_push (thread_item_t
, context
->items
, &item
);
2921 return 1; /* continue iterator */
2924 #define CRAZY_MAX_THREADS 1000
2927 remote_current_thread (ptid_t oldpid
)
2929 struct remote_state
*rs
= get_remote_state ();
2932 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2933 if (rs
->buf
[0] == 'Q' && rs
->buf
[1] == 'C')
2938 result
= read_ptid (&rs
->buf
[2], &obuf
);
2939 if (*obuf
!= '\0' && remote_debug
)
2940 fprintf_unfiltered (gdb_stdlog
,
2941 "warning: garbage in qC reply\n");
2949 /* List remote threads using the deprecated qL packet. */
2952 remote_get_threads_with_ql (struct target_ops
*ops
,
2953 struct threads_listing_context
*context
)
2955 if (remote_threadlist_iterator (remote_newthread_step
, context
,
2956 CRAZY_MAX_THREADS
) >= 0)
2962 #if defined(HAVE_LIBEXPAT)
2965 start_thread (struct gdb_xml_parser
*parser
,
2966 const struct gdb_xml_element
*element
,
2967 void *user_data
, VEC(gdb_xml_value_s
) *attributes
)
2969 struct threads_listing_context
*data
2970 = (struct threads_listing_context
*) user_data
;
2972 struct thread_item item
;
2974 struct gdb_xml_value
*attr
;
2976 id
= (char *) xml_find_attribute (attributes
, "id")->value
;
2977 item
.ptid
= read_ptid (id
, NULL
);
2979 attr
= xml_find_attribute (attributes
, "core");
2981 item
.core
= *(ULONGEST
*) attr
->value
;
2985 attr
= xml_find_attribute (attributes
, "name");
2986 item
.name
= attr
!= NULL
? xstrdup ((const char *) attr
->value
) : NULL
;
2990 VEC_safe_push (thread_item_t
, data
->items
, &item
);
2994 end_thread (struct gdb_xml_parser
*parser
,
2995 const struct gdb_xml_element
*element
,
2996 void *user_data
, const char *body_text
)
2998 struct threads_listing_context
*data
2999 = (struct threads_listing_context
*) user_data
;
3001 if (body_text
&& *body_text
)
3002 VEC_last (thread_item_t
, data
->items
)->extra
= xstrdup (body_text
);
3005 const struct gdb_xml_attribute thread_attributes
[] = {
3006 { "id", GDB_XML_AF_NONE
, NULL
, NULL
},
3007 { "core", GDB_XML_AF_OPTIONAL
, gdb_xml_parse_attr_ulongest
, NULL
},
3008 { "name", GDB_XML_AF_OPTIONAL
, NULL
, NULL
},
3009 { NULL
, GDB_XML_AF_NONE
, NULL
, NULL
}
3012 const struct gdb_xml_element thread_children
[] = {
3013 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
3016 const struct gdb_xml_element threads_children
[] = {
3017 { "thread", thread_attributes
, thread_children
,
3018 GDB_XML_EF_REPEATABLE
| GDB_XML_EF_OPTIONAL
,
3019 start_thread
, end_thread
},
3020 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
3023 const struct gdb_xml_element threads_elements
[] = {
3024 { "threads", NULL
, threads_children
,
3025 GDB_XML_EF_NONE
, NULL
, NULL
},
3026 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
3031 /* List remote threads using qXfer:threads:read. */
3034 remote_get_threads_with_qxfer (struct target_ops
*ops
,
3035 struct threads_listing_context
*context
)
3037 #if defined(HAVE_LIBEXPAT)
3038 if (packet_support (PACKET_qXfer_threads
) == PACKET_ENABLE
)
3040 char *xml
= target_read_stralloc (ops
, TARGET_OBJECT_THREADS
, NULL
);
3041 struct cleanup
*back_to
= make_cleanup (xfree
, xml
);
3043 if (xml
!= NULL
&& *xml
!= '\0')
3045 gdb_xml_parse_quick (_("threads"), "threads.dtd",
3046 threads_elements
, xml
, context
);
3049 do_cleanups (back_to
);
3057 /* List remote threads using qfThreadInfo/qsThreadInfo. */
3060 remote_get_threads_with_qthreadinfo (struct target_ops
*ops
,
3061 struct threads_listing_context
*context
)
3063 struct remote_state
*rs
= get_remote_state ();
3065 if (rs
->use_threadinfo_query
)
3069 putpkt ("qfThreadInfo");
3070 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3072 if (bufp
[0] != '\0') /* q packet recognized */
3074 while (*bufp
++ == 'm') /* reply contains one or more TID */
3078 struct thread_item item
;
3080 item
.ptid
= read_ptid (bufp
, &bufp
);
3084 VEC_safe_push (thread_item_t
, context
->items
, &item
);
3086 while (*bufp
++ == ','); /* comma-separated list */
3087 putpkt ("qsThreadInfo");
3088 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3095 /* Packet not recognized. */
3096 rs
->use_threadinfo_query
= 0;
3103 /* Implement the to_update_thread_list function for the remote
3107 remote_update_thread_list (struct target_ops
*ops
)
3109 struct remote_state
*rs
= get_remote_state ();
3110 struct threads_listing_context context
;
3111 struct cleanup
*old_chain
;
3114 context
.items
= NULL
;
3115 old_chain
= make_cleanup (clear_threads_listing_context
, &context
);
3117 /* We have a few different mechanisms to fetch the thread list. Try
3118 them all, starting with the most preferred one first, falling
3119 back to older methods. */
3120 if (remote_get_threads_with_qxfer (ops
, &context
)
3121 || remote_get_threads_with_qthreadinfo (ops
, &context
)
3122 || remote_get_threads_with_ql (ops
, &context
))
3125 struct thread_item
*item
;
3126 struct thread_info
*tp
, *tmp
;
3130 if (VEC_empty (thread_item_t
, context
.items
)
3131 && remote_thread_always_alive (ops
, inferior_ptid
))
3133 /* Some targets don't really support threads, but still
3134 reply an (empty) thread list in response to the thread
3135 listing packets, instead of replying "packet not
3136 supported". Exit early so we don't delete the main
3138 do_cleanups (old_chain
);
3142 /* CONTEXT now holds the current thread list on the remote
3143 target end. Delete GDB-side threads no longer found on the
3145 ALL_THREADS_SAFE (tp
, tmp
)
3148 VEC_iterate (thread_item_t
, context
.items
, i
, item
);
3151 if (ptid_equal (item
->ptid
, tp
->ptid
))
3155 if (i
== VEC_length (thread_item_t
, context
.items
))
3158 delete_thread (tp
->ptid
);
3162 /* Remove any unreported fork child threads from CONTEXT so
3163 that we don't interfere with follow fork, which is where
3164 creation of such threads is handled. */
3165 remove_new_fork_children (&context
);
3167 /* And now add threads we don't know about yet to our list. */
3169 VEC_iterate (thread_item_t
, context
.items
, i
, item
);
3172 if (!ptid_equal (item
->ptid
, null_ptid
))
3174 struct private_thread_info
*info
;
3175 /* In non-stop mode, we assume new found threads are
3176 running until proven otherwise with a stop reply. In
3177 all-stop, we can only get here if all threads are
3179 int running
= target_is_non_stop_p () ? 1 : 0;
3181 remote_notice_new_inferior (item
->ptid
, running
);
3183 info
= demand_private_info (item
->ptid
);
3184 info
->core
= item
->core
;
3185 info
->extra
= item
->extra
;
3187 info
->name
= item
->name
;
3195 /* If no thread listing method is supported, then query whether
3196 each known thread is alive, one by one, with the T packet.
3197 If the target doesn't support threads at all, then this is a
3198 no-op. See remote_thread_alive. */
3202 do_cleanups (old_chain
);
3206 * Collect a descriptive string about the given thread.
3207 * The target may say anything it wants to about the thread
3208 * (typically info about its blocked / runnable state, name, etc.).
3209 * This string will appear in the info threads display.
3211 * Optional: targets are not required to implement this function.
3215 remote_threads_extra_info (struct target_ops
*self
, struct thread_info
*tp
)
3217 struct remote_state
*rs
= get_remote_state ();
3221 struct gdb_ext_thread_info threadinfo
;
3222 static char display_buf
[100]; /* arbitrary... */
3223 int n
= 0; /* position in display_buf */
3225 if (rs
->remote_desc
== 0) /* paranoia */
3226 internal_error (__FILE__
, __LINE__
,
3227 _("remote_threads_extra_info"));
3229 if (ptid_equal (tp
->ptid
, magic_null_ptid
)
3230 || (ptid_get_pid (tp
->ptid
) != 0 && ptid_get_lwp (tp
->ptid
) == 0))
3231 /* This is the main thread which was added by GDB. The remote
3232 server doesn't know about it. */
3235 if (packet_support (PACKET_qXfer_threads
) == PACKET_ENABLE
)
3237 struct thread_info
*info
= find_thread_ptid (tp
->ptid
);
3239 if (info
&& info
->priv
)
3240 return info
->priv
->extra
;
3245 if (rs
->use_threadextra_query
)
3248 char *endb
= rs
->buf
+ get_remote_packet_size ();
3250 xsnprintf (b
, endb
- b
, "qThreadExtraInfo,");
3252 write_ptid (b
, endb
, tp
->ptid
);
3255 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3256 if (rs
->buf
[0] != 0)
3258 n
= min (strlen (rs
->buf
) / 2, sizeof (display_buf
));
3259 result
= hex2bin (rs
->buf
, (gdb_byte
*) display_buf
, n
);
3260 display_buf
[result
] = '\0';
3265 /* If the above query fails, fall back to the old method. */
3266 rs
->use_threadextra_query
= 0;
3267 set
= TAG_THREADID
| TAG_EXISTS
| TAG_THREADNAME
3268 | TAG_MOREDISPLAY
| TAG_DISPLAY
;
3269 int_to_threadref (&id
, ptid_get_lwp (tp
->ptid
));
3270 if (remote_get_threadinfo (&id
, set
, &threadinfo
))
3271 if (threadinfo
.active
)
3273 if (*threadinfo
.shortname
)
3274 n
+= xsnprintf (&display_buf
[0], sizeof (display_buf
) - n
,
3275 " Name: %s,", threadinfo
.shortname
);
3276 if (*threadinfo
.display
)
3277 n
+= xsnprintf (&display_buf
[n
], sizeof (display_buf
) - n
,
3278 " State: %s,", threadinfo
.display
);
3279 if (*threadinfo
.more_display
)
3280 n
+= xsnprintf (&display_buf
[n
], sizeof (display_buf
) - n
,
3281 " Priority: %s", threadinfo
.more_display
);
3285 /* For purely cosmetic reasons, clear up trailing commas. */
3286 if (',' == display_buf
[n
-1])
3287 display_buf
[n
-1] = ' ';
3296 remote_static_tracepoint_marker_at (struct target_ops
*self
, CORE_ADDR addr
,
3297 struct static_tracepoint_marker
*marker
)
3299 struct remote_state
*rs
= get_remote_state ();
3302 xsnprintf (p
, get_remote_packet_size (), "qTSTMat:");
3304 p
+= hexnumstr (p
, addr
);
3306 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3310 error (_("Remote failure reply: %s"), p
);
3314 parse_static_tracepoint_marker_definition (p
, &p
, marker
);
3321 static VEC(static_tracepoint_marker_p
) *
3322 remote_static_tracepoint_markers_by_strid (struct target_ops
*self
,
3325 struct remote_state
*rs
= get_remote_state ();
3326 VEC(static_tracepoint_marker_p
) *markers
= NULL
;
3327 struct static_tracepoint_marker
*marker
= NULL
;
3328 struct cleanup
*old_chain
;
3331 /* Ask for a first packet of static tracepoint marker
3334 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3337 error (_("Remote failure reply: %s"), p
);
3339 old_chain
= make_cleanup (free_current_marker
, &marker
);
3344 marker
= XCNEW (struct static_tracepoint_marker
);
3348 parse_static_tracepoint_marker_definition (p
, &p
, marker
);
3350 if (strid
== NULL
|| strcmp (strid
, marker
->str_id
) == 0)
3352 VEC_safe_push (static_tracepoint_marker_p
,
3358 release_static_tracepoint_marker (marker
);
3359 memset (marker
, 0, sizeof (*marker
));
3362 while (*p
++ == ','); /* comma-separated list */
3363 /* Ask for another packet of static tracepoint definition. */
3365 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3369 do_cleanups (old_chain
);
3374 /* Implement the to_get_ada_task_ptid function for the remote targets. */
3377 remote_get_ada_task_ptid (struct target_ops
*self
, long lwp
, long thread
)
3379 return ptid_build (ptid_get_pid (inferior_ptid
), lwp
, 0);
3383 /* Restart the remote side; this is an extended protocol operation. */
3386 extended_remote_restart (void)
3388 struct remote_state
*rs
= get_remote_state ();
3390 /* Send the restart command; for reasons I don't understand the
3391 remote side really expects a number after the "R". */
3392 xsnprintf (rs
->buf
, get_remote_packet_size (), "R%x", 0);
3395 remote_fileio_reset ();
3398 /* Clean up connection to a remote debugger. */
3401 remote_close (struct target_ops
*self
)
3403 struct remote_state
*rs
= get_remote_state ();
3405 if (rs
->remote_desc
== NULL
)
3406 return; /* already closed */
3408 /* Make sure we leave stdin registered in the event loop, and we
3409 don't leave the async SIGINT signal handler installed. */
3410 remote_terminal_ours (self
);
3412 serial_close (rs
->remote_desc
);
3413 rs
->remote_desc
= NULL
;
3415 /* We don't have a connection to the remote stub anymore. Get rid
3416 of all the inferiors and their threads we were controlling.
3417 Reset inferior_ptid to null_ptid first, as otherwise has_stack_frame
3418 will be unable to find the thread corresponding to (pid, 0, 0). */
3419 inferior_ptid
= null_ptid
;
3420 discard_all_inferiors ();
3422 /* We are closing the remote target, so we should discard
3423 everything of this target. */
3424 discard_pending_stop_replies_in_queue (rs
);
3426 if (remote_async_inferior_event_token
)
3427 delete_async_event_handler (&remote_async_inferior_event_token
);
3429 remote_notif_state_xfree (rs
->notif_state
);
3431 trace_reset_local_state ();
3434 /* Query the remote side for the text, data and bss offsets. */
3439 struct remote_state
*rs
= get_remote_state ();
3442 int lose
, num_segments
= 0, do_sections
, do_segments
;
3443 CORE_ADDR text_addr
, data_addr
, bss_addr
, segments
[2];
3444 struct section_offsets
*offs
;
3445 struct symfile_segment_data
*data
;
3447 if (symfile_objfile
== NULL
)
3450 putpkt ("qOffsets");
3451 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3454 if (buf
[0] == '\000')
3455 return; /* Return silently. Stub doesn't support
3459 warning (_("Remote failure reply: %s"), buf
);
3463 /* Pick up each field in turn. This used to be done with scanf, but
3464 scanf will make trouble if CORE_ADDR size doesn't match
3465 conversion directives correctly. The following code will work
3466 with any size of CORE_ADDR. */
3467 text_addr
= data_addr
= bss_addr
= 0;
3471 if (startswith (ptr
, "Text="))
3474 /* Don't use strtol, could lose on big values. */
3475 while (*ptr
&& *ptr
!= ';')
3476 text_addr
= (text_addr
<< 4) + fromhex (*ptr
++);
3478 if (startswith (ptr
, ";Data="))
3481 while (*ptr
&& *ptr
!= ';')
3482 data_addr
= (data_addr
<< 4) + fromhex (*ptr
++);
3487 if (!lose
&& startswith (ptr
, ";Bss="))
3490 while (*ptr
&& *ptr
!= ';')
3491 bss_addr
= (bss_addr
<< 4) + fromhex (*ptr
++);
3493 if (bss_addr
!= data_addr
)
3494 warning (_("Target reported unsupported offsets: %s"), buf
);
3499 else if (startswith (ptr
, "TextSeg="))
3502 /* Don't use strtol, could lose on big values. */
3503 while (*ptr
&& *ptr
!= ';')
3504 text_addr
= (text_addr
<< 4) + fromhex (*ptr
++);
3507 if (startswith (ptr
, ";DataSeg="))
3510 while (*ptr
&& *ptr
!= ';')
3511 data_addr
= (data_addr
<< 4) + fromhex (*ptr
++);
3519 error (_("Malformed response to offset query, %s"), buf
);
3520 else if (*ptr
!= '\0')
3521 warning (_("Target reported unsupported offsets: %s"), buf
);
3523 offs
= ((struct section_offsets
*)
3524 alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
)));
3525 memcpy (offs
, symfile_objfile
->section_offsets
,
3526 SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
));
3528 data
= get_symfile_segment_data (symfile_objfile
->obfd
);
3529 do_segments
= (data
!= NULL
);
3530 do_sections
= num_segments
== 0;
3532 if (num_segments
> 0)
3534 segments
[0] = text_addr
;
3535 segments
[1] = data_addr
;
3537 /* If we have two segments, we can still try to relocate everything
3538 by assuming that the .text and .data offsets apply to the whole
3539 text and data segments. Convert the offsets given in the packet
3540 to base addresses for symfile_map_offsets_to_segments. */
3541 else if (data
&& data
->num_segments
== 2)
3543 segments
[0] = data
->segment_bases
[0] + text_addr
;
3544 segments
[1] = data
->segment_bases
[1] + data_addr
;
3547 /* If the object file has only one segment, assume that it is text
3548 rather than data; main programs with no writable data are rare,
3549 but programs with no code are useless. Of course the code might
3550 have ended up in the data segment... to detect that we would need
3551 the permissions here. */
3552 else if (data
&& data
->num_segments
== 1)
3554 segments
[0] = data
->segment_bases
[0] + text_addr
;
3557 /* There's no way to relocate by segment. */
3563 int ret
= symfile_map_offsets_to_segments (symfile_objfile
->obfd
, data
,
3564 offs
, num_segments
, segments
);
3566 if (ret
== 0 && !do_sections
)
3567 error (_("Can not handle qOffsets TextSeg "
3568 "response with this symbol file"));
3575 free_symfile_segment_data (data
);
3579 offs
->offsets
[SECT_OFF_TEXT (symfile_objfile
)] = text_addr
;
3581 /* This is a temporary kludge to force data and bss to use the
3582 same offsets because that's what nlmconv does now. The real
3583 solution requires changes to the stub and remote.c that I
3584 don't have time to do right now. */
3586 offs
->offsets
[SECT_OFF_DATA (symfile_objfile
)] = data_addr
;
3587 offs
->offsets
[SECT_OFF_BSS (symfile_objfile
)] = data_addr
;
3590 objfile_relocate (symfile_objfile
, offs
);
3593 /* Send interrupt_sequence to remote target. */
3595 send_interrupt_sequence (void)
3597 struct remote_state
*rs
= get_remote_state ();
3599 if (interrupt_sequence_mode
== interrupt_sequence_control_c
)
3600 remote_serial_write ("\x03", 1);
3601 else if (interrupt_sequence_mode
== interrupt_sequence_break
)
3602 serial_send_break (rs
->remote_desc
);
3603 else if (interrupt_sequence_mode
== interrupt_sequence_break_g
)
3605 serial_send_break (rs
->remote_desc
);
3606 remote_serial_write ("g", 1);
3609 internal_error (__FILE__
, __LINE__
,
3610 _("Invalid value for interrupt_sequence_mode: %s."),
3611 interrupt_sequence_mode
);
3615 /* If STOP_REPLY is a T stop reply, look for the "thread" register,
3616 and extract the PTID. Returns NULL_PTID if not found. */
3619 stop_reply_extract_thread (char *stop_reply
)
3621 if (stop_reply
[0] == 'T' && strlen (stop_reply
) > 3)
3625 /* Txx r:val ; r:val (...) */
3628 /* Look for "register" named "thread". */
3633 p1
= strchr (p
, ':');
3637 if (strncmp (p
, "thread", p1
- p
) == 0)
3638 return read_ptid (++p1
, &p
);
3640 p1
= strchr (p
, ';');
3652 /* Determine the remote side's current thread. If we have a stop
3653 reply handy (in WAIT_STATUS), maybe it's a T stop reply with a
3654 "thread" register we can extract the current thread from. If not,
3655 ask the remote which is the current thread with qC. The former
3656 method avoids a roundtrip. */
3659 get_current_thread (char *wait_status
)
3661 ptid_t ptid
= null_ptid
;
3663 /* Note we don't use remote_parse_stop_reply as that makes use of
3664 the target architecture, which we haven't yet fully determined at
3666 if (wait_status
!= NULL
)
3667 ptid
= stop_reply_extract_thread (wait_status
);
3668 if (ptid_equal (ptid
, null_ptid
))
3669 ptid
= remote_current_thread (inferior_ptid
);
3674 /* Query the remote target for which is the current thread/process,
3675 add it to our tables, and update INFERIOR_PTID. The caller is
3676 responsible for setting the state such that the remote end is ready
3677 to return the current thread.
3679 This function is called after handling the '?' or 'vRun' packets,
3680 whose response is a stop reply from which we can also try
3681 extracting the thread. If the target doesn't support the explicit
3682 qC query, we infer the current thread from that stop reply, passed
3683 in in WAIT_STATUS, which may be NULL. */
3686 add_current_inferior_and_thread (char *wait_status
)
3688 struct remote_state
*rs
= get_remote_state ();
3692 inferior_ptid
= null_ptid
;
3694 /* Now, if we have thread information, update inferior_ptid. */
3695 ptid
= get_current_thread (wait_status
);
3697 if (!ptid_equal (ptid
, null_ptid
))
3699 if (!remote_multi_process_p (rs
))
3702 inferior_ptid
= ptid
;
3706 /* Without this, some commands which require an active target
3707 (such as kill) won't work. This variable serves (at least)
3708 double duty as both the pid of the target process (if it has
3709 such), and as a flag indicating that a target is active. */
3710 inferior_ptid
= magic_null_ptid
;
3714 remote_add_inferior (fake_pid_p
, ptid_get_pid (inferior_ptid
), -1, 1);
3716 /* Add the main thread. */
3717 add_thread_silent (inferior_ptid
);
3720 /* Print info about a thread that was found already stopped on
3724 print_one_stopped_thread (struct thread_info
*thread
)
3726 struct target_waitstatus
*ws
= &thread
->suspend
.waitstatus
;
3728 switch_to_thread (thread
->ptid
);
3729 stop_pc
= get_frame_pc (get_current_frame ());
3730 set_current_sal_from_frame (get_current_frame ());
3732 thread
->suspend
.waitstatus_pending_p
= 0;
3734 if (ws
->kind
== TARGET_WAITKIND_STOPPED
)
3736 enum gdb_signal sig
= ws
->value
.sig
;
3738 if (signal_print_state (sig
))
3739 observer_notify_signal_received (sig
);
3741 observer_notify_normal_stop (NULL
, 1);
3744 /* Process all initial stop replies the remote side sent in response
3745 to the ? packet. These indicate threads that were already stopped
3746 on initial connection. We mark these threads as stopped and print
3747 their current frame before giving the user the prompt. */
3750 process_initial_stop_replies (int from_tty
)
3752 int pending_stop_replies
= stop_reply_queue_length ();
3753 struct inferior
*inf
;
3754 struct thread_info
*thread
;
3755 struct thread_info
*selected
= NULL
;
3756 struct thread_info
*lowest_stopped
= NULL
;
3757 struct thread_info
*first
= NULL
;
3759 /* Consume the initial pending events. */
3760 while (pending_stop_replies
-- > 0)
3762 ptid_t waiton_ptid
= minus_one_ptid
;
3764 struct target_waitstatus ws
;
3765 int ignore_event
= 0;
3766 struct thread_info
*thread
;
3768 memset (&ws
, 0, sizeof (ws
));
3769 event_ptid
= target_wait (waiton_ptid
, &ws
, TARGET_WNOHANG
);
3771 print_target_wait_results (waiton_ptid
, event_ptid
, &ws
);
3775 case TARGET_WAITKIND_IGNORE
:
3776 case TARGET_WAITKIND_NO_RESUMED
:
3777 case TARGET_WAITKIND_SIGNALLED
:
3778 case TARGET_WAITKIND_EXITED
:
3779 /* We shouldn't see these, but if we do, just ignore. */
3781 fprintf_unfiltered (gdb_stdlog
, "remote: event ignored\n");
3785 case TARGET_WAITKIND_EXECD
:
3786 xfree (ws
.value
.execd_pathname
);
3795 thread
= find_thread_ptid (event_ptid
);
3797 if (ws
.kind
== TARGET_WAITKIND_STOPPED
)
3799 enum gdb_signal sig
= ws
.value
.sig
;
3801 /* Stubs traditionally report SIGTRAP as initial signal,
3802 instead of signal 0. Suppress it. */
3803 if (sig
== GDB_SIGNAL_TRAP
)
3805 thread
->suspend
.stop_signal
= sig
;
3809 thread
->suspend
.waitstatus
= ws
;
3811 if (ws
.kind
!= TARGET_WAITKIND_STOPPED
3812 || ws
.value
.sig
!= GDB_SIGNAL_0
)
3813 thread
->suspend
.waitstatus_pending_p
= 1;
3815 set_executing (event_ptid
, 0);
3816 set_running (event_ptid
, 0);
3819 /* "Notice" the new inferiors before anything related to
3820 registers/memory. */
3826 inf
->needs_setup
= 1;
3830 thread
= any_live_thread_of_process (inf
->pid
);
3831 notice_new_inferior (thread
->ptid
,
3832 thread
->state
== THREAD_RUNNING
,
3837 /* If all-stop on top of non-stop, pause all threads. Note this
3838 records the threads' stop pc, so must be done after "noticing"
3842 stop_all_threads ();
3844 /* If all threads of an inferior were already stopped, we
3845 haven't setup the inferior yet. */
3851 if (inf
->needs_setup
)
3853 thread
= any_live_thread_of_process (inf
->pid
);
3854 switch_to_thread_no_regs (thread
);
3860 /* Now go over all threads that are stopped, and print their current
3861 frame. If all-stop, then if there's a signalled thread, pick
3863 ALL_NON_EXITED_THREADS (thread
)
3865 struct target_waitstatus
*ws
;
3871 set_running (thread
->ptid
, 0);
3872 else if (thread
->state
!= THREAD_STOPPED
)
3875 ws
= &thread
->suspend
.waitstatus
;
3877 if (selected
== NULL
3878 && thread
->suspend
.waitstatus_pending_p
)
3881 if (lowest_stopped
== NULL
|| thread
->num
< lowest_stopped
->num
)
3882 lowest_stopped
= thread
;
3885 print_one_stopped_thread (thread
);
3888 /* In all-stop, we only print the status of one thread, and leave
3889 others with their status pending. */
3894 thread
= lowest_stopped
;
3898 print_one_stopped_thread (thread
);
3901 /* For "info program". */
3902 thread
= inferior_thread ();
3903 if (thread
->state
== THREAD_STOPPED
)
3904 set_last_target_status (inferior_ptid
, thread
->suspend
.waitstatus
);
3908 remote_start_remote (int from_tty
, struct target_ops
*target
, int extended_p
)
3910 struct remote_state
*rs
= get_remote_state ();
3911 struct packet_config
*noack_config
;
3912 char *wait_status
= NULL
;
3914 immediate_quit
++; /* Allow user to interrupt it. */
3917 if (interrupt_on_connect
)
3918 send_interrupt_sequence ();
3920 /* Ack any packet which the remote side has already sent. */
3921 serial_write (rs
->remote_desc
, "+", 1);
3923 /* Signal other parts that we're going through the initial setup,
3924 and so things may not be stable yet. */
3925 rs
->starting_up
= 1;
3927 /* The first packet we send to the target is the optional "supported
3928 packets" request. If the target can answer this, it will tell us
3929 which later probes to skip. */
3930 remote_query_supported ();
3932 /* If the stub wants to get a QAllow, compose one and send it. */
3933 if (packet_support (PACKET_QAllow
) != PACKET_DISABLE
)
3934 remote_set_permissions (target
);
3936 /* Next, we possibly activate noack mode.
3938 If the QStartNoAckMode packet configuration is set to AUTO,
3939 enable noack mode if the stub reported a wish for it with
3942 If set to TRUE, then enable noack mode even if the stub didn't
3943 report it in qSupported. If the stub doesn't reply OK, the
3944 session ends with an error.
3946 If FALSE, then don't activate noack mode, regardless of what the
3947 stub claimed should be the default with qSupported. */
3949 noack_config
= &remote_protocol_packets
[PACKET_QStartNoAckMode
];
3950 if (packet_config_support (noack_config
) != PACKET_DISABLE
)
3952 putpkt ("QStartNoAckMode");
3953 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3954 if (packet_ok (rs
->buf
, noack_config
) == PACKET_OK
)
3960 /* Tell the remote that we are using the extended protocol. */
3962 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3965 /* Let the target know which signals it is allowed to pass down to
3967 update_signals_program_target ();
3969 /* Next, if the target can specify a description, read it. We do
3970 this before anything involving memory or registers. */
3971 target_find_description ();
3973 /* Next, now that we know something about the target, update the
3974 address spaces in the program spaces. */
3975 update_address_spaces ();
3977 /* On OSs where the list of libraries is global to all
3978 processes, we fetch them early. */
3979 if (gdbarch_has_global_solist (target_gdbarch ()))
3980 solib_add (NULL
, from_tty
, target
, auto_solib_add
);
3982 if (target_is_non_stop_p ())
3984 if (packet_support (PACKET_QNonStop
) != PACKET_ENABLE
)
3985 error (_("Non-stop mode requested, but remote "
3986 "does not support non-stop"));
3988 putpkt ("QNonStop:1");
3989 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3991 if (strcmp (rs
->buf
, "OK") != 0)
3992 error (_("Remote refused setting non-stop mode with: %s"), rs
->buf
);
3994 /* Find about threads and processes the stub is already
3995 controlling. We default to adding them in the running state.
3996 The '?' query below will then tell us about which threads are
3998 remote_update_thread_list (target
);
4000 else if (packet_support (PACKET_QNonStop
) == PACKET_ENABLE
)
4002 /* Don't assume that the stub can operate in all-stop mode.
4003 Request it explicitly. */
4004 putpkt ("QNonStop:0");
4005 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4007 if (strcmp (rs
->buf
, "OK") != 0)
4008 error (_("Remote refused setting all-stop mode with: %s"), rs
->buf
);
4011 /* Upload TSVs regardless of whether the target is running or not. The
4012 remote stub, such as GDBserver, may have some predefined or builtin
4013 TSVs, even if the target is not running. */
4014 if (remote_get_trace_status (target
, current_trace_status ()) != -1)
4016 struct uploaded_tsv
*uploaded_tsvs
= NULL
;
4018 remote_upload_trace_state_variables (target
, &uploaded_tsvs
);
4019 merge_uploaded_trace_state_variables (&uploaded_tsvs
);
4022 /* Check whether the target is running now. */
4024 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4026 if (!target_is_non_stop_p ())
4030 struct inferior
*inf
;
4032 if (rs
->buf
[0] == 'W' || rs
->buf
[0] == 'X')
4035 error (_("The target is not running (try extended-remote?)"));
4037 /* We're connected, but not running. Drop out before we
4038 call start_remote. */
4039 rs
->starting_up
= 0;
4044 /* Save the reply for later. */
4045 wait_status
= (char *) alloca (strlen (rs
->buf
) + 1);
4046 strcpy (wait_status
, rs
->buf
);
4049 /* Fetch thread list. */
4050 target_update_thread_list ();
4052 /* Let the stub know that we want it to return the thread. */
4053 set_continue_thread (minus_one_ptid
);
4055 if (thread_count () == 0)
4057 /* Target has no concept of threads at all. GDB treats
4058 non-threaded target as single-threaded; add a main
4060 add_current_inferior_and_thread (wait_status
);
4064 /* We have thread information; select the thread the target
4065 says should be current. If we're reconnecting to a
4066 multi-threaded program, this will ideally be the thread
4067 that last reported an event before GDB disconnected. */
4068 inferior_ptid
= get_current_thread (wait_status
);
4069 if (ptid_equal (inferior_ptid
, null_ptid
))
4071 /* Odd... The target was able to list threads, but not
4072 tell us which thread was current (no "thread"
4073 register in T stop reply?). Just pick the first
4074 thread in the thread list then. */
4077 fprintf_unfiltered (gdb_stdlog
,
4078 "warning: couldn't determine remote "
4079 "current thread; picking first in list.\n");
4081 inferior_ptid
= thread_list
->ptid
;
4085 /* init_wait_for_inferior should be called before get_offsets in order
4086 to manage `inserted' flag in bp loc in a correct state.
4087 breakpoint_init_inferior, called from init_wait_for_inferior, set
4088 `inserted' flag to 0, while before breakpoint_re_set, called from
4089 start_remote, set `inserted' flag to 1. In the initialization of
4090 inferior, breakpoint_init_inferior should be called first, and then
4091 breakpoint_re_set can be called. If this order is broken, state of
4092 `inserted' flag is wrong, and cause some problems on breakpoint
4094 init_wait_for_inferior ();
4096 get_offsets (); /* Get text, data & bss offsets. */
4098 /* If we could not find a description using qXfer, and we know
4099 how to do it some other way, try again. This is not
4100 supported for non-stop; it could be, but it is tricky if
4101 there are no stopped threads when we connect. */
4102 if (remote_read_description_p (target
)
4103 && gdbarch_target_desc (target_gdbarch ()) == NULL
)
4105 target_clear_description ();
4106 target_find_description ();
4109 /* Use the previously fetched status. */
4110 gdb_assert (wait_status
!= NULL
);
4111 strcpy (rs
->buf
, wait_status
);
4112 rs
->cached_wait_status
= 1;
4115 start_remote (from_tty
); /* Initialize gdb process mechanisms. */
4119 /* Clear WFI global state. Do this before finding about new
4120 threads and inferiors, and setting the current inferior.
4121 Otherwise we would clear the proceed status of the current
4122 inferior when we want its stop_soon state to be preserved
4123 (see notice_new_inferior). */
4124 init_wait_for_inferior ();
4126 /* In non-stop, we will either get an "OK", meaning that there
4127 are no stopped threads at this time; or, a regular stop
4128 reply. In the latter case, there may be more than one thread
4129 stopped --- we pull them all out using the vStopped
4131 if (strcmp (rs
->buf
, "OK") != 0)
4133 struct notif_client
*notif
= ¬if_client_stop
;
4135 /* remote_notif_get_pending_replies acks this one, and gets
4137 rs
->notif_state
->pending_event
[notif_client_stop
.id
]
4138 = remote_notif_parse (notif
, rs
->buf
);
4139 remote_notif_get_pending_events (notif
);
4142 if (thread_count () == 0)
4145 error (_("The target is not running (try extended-remote?)"));
4147 /* We're connected, but not running. Drop out before we
4148 call start_remote. */
4149 rs
->starting_up
= 0;
4153 /* In non-stop mode, any cached wait status will be stored in
4154 the stop reply queue. */
4155 gdb_assert (wait_status
== NULL
);
4157 /* Report all signals during attach/startup. */
4158 remote_pass_signals (target
, 0, NULL
);
4160 /* If there are already stopped threads, mark them stopped and
4161 report their stops before giving the prompt to the user. */
4162 process_initial_stop_replies (from_tty
);
4164 if (target_can_async_p ())
4168 /* If we connected to a live target, do some additional setup. */
4169 if (target_has_execution
)
4171 if (symfile_objfile
) /* No use without a symbol-file. */
4172 remote_check_symbols ();
4175 /* Possibly the target has been engaged in a trace run started
4176 previously; find out where things are at. */
4177 if (remote_get_trace_status (target
, current_trace_status ()) != -1)
4179 struct uploaded_tp
*uploaded_tps
= NULL
;
4181 if (current_trace_status ()->running
)
4182 printf_filtered (_("Trace is already running on the target.\n"));
4184 remote_upload_tracepoints (target
, &uploaded_tps
);
4186 merge_uploaded_tracepoints (&uploaded_tps
);
4189 /* The thread and inferior lists are now synchronized with the
4190 target, our symbols have been relocated, and we're merged the
4191 target's tracepoints with ours. We're done with basic start
4193 rs
->starting_up
= 0;
4195 /* Maybe breakpoints are global and need to be inserted now. */
4196 if (breakpoints_should_be_inserted_now ())
4197 insert_breakpoints ();
4200 /* Open a connection to a remote debugger.
4201 NAME is the filename used for communication. */
4204 remote_open (const char *name
, int from_tty
)
4206 remote_open_1 (name
, from_tty
, &remote_ops
, 0);
4209 /* Open a connection to a remote debugger using the extended
4210 remote gdb protocol. NAME is the filename used for communication. */
4213 extended_remote_open (const char *name
, int from_tty
)
4215 remote_open_1 (name
, from_tty
, &extended_remote_ops
, 1 /*extended_p */);
4218 /* Reset all packets back to "unknown support". Called when opening a
4219 new connection to a remote target. */
4222 reset_all_packet_configs_support (void)
4226 for (i
= 0; i
< PACKET_MAX
; i
++)
4227 remote_protocol_packets
[i
].support
= PACKET_SUPPORT_UNKNOWN
;
4230 /* Initialize all packet configs. */
4233 init_all_packet_configs (void)
4237 for (i
= 0; i
< PACKET_MAX
; i
++)
4239 remote_protocol_packets
[i
].detect
= AUTO_BOOLEAN_AUTO
;
4240 remote_protocol_packets
[i
].support
= PACKET_SUPPORT_UNKNOWN
;
4244 /* Symbol look-up. */
4247 remote_check_symbols (void)
4249 struct remote_state
*rs
= get_remote_state ();
4250 char *msg
, *reply
, *tmp
;
4251 struct bound_minimal_symbol sym
;
4253 struct cleanup
*old_chain
;
4255 /* The remote side has no concept of inferiors that aren't running
4256 yet, it only knows about running processes. If we're connected
4257 but our current inferior is not running, we should not invite the
4258 remote target to request symbol lookups related to its
4259 (unrelated) current process. */
4260 if (!target_has_execution
)
4263 if (packet_support (PACKET_qSymbol
) == PACKET_DISABLE
)
4266 /* Make sure the remote is pointing at the right process. Note
4267 there's no way to select "no process". */
4268 set_general_process ();
4270 /* Allocate a message buffer. We can't reuse the input buffer in RS,
4271 because we need both at the same time. */
4272 msg
= (char *) xmalloc (get_remote_packet_size ());
4273 old_chain
= make_cleanup (xfree
, msg
);
4275 /* Invite target to request symbol lookups. */
4277 putpkt ("qSymbol::");
4278 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4279 packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_qSymbol
]);
4282 while (startswith (reply
, "qSymbol:"))
4284 struct bound_minimal_symbol sym
;
4287 end
= hex2bin (tmp
, (gdb_byte
*) msg
, strlen (tmp
) / 2);
4289 sym
= lookup_minimal_symbol (msg
, NULL
, NULL
);
4290 if (sym
.minsym
== NULL
)
4291 xsnprintf (msg
, get_remote_packet_size (), "qSymbol::%s", &reply
[8]);
4294 int addr_size
= gdbarch_addr_bit (target_gdbarch ()) / 8;
4295 CORE_ADDR sym_addr
= BMSYMBOL_VALUE_ADDRESS (sym
);
4297 /* If this is a function address, return the start of code
4298 instead of any data function descriptor. */
4299 sym_addr
= gdbarch_convert_from_func_ptr_addr (target_gdbarch (),
4303 xsnprintf (msg
, get_remote_packet_size (), "qSymbol:%s:%s",
4304 phex_nz (sym_addr
, addr_size
), &reply
[8]);
4308 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4312 do_cleanups (old_chain
);
4315 static struct serial
*
4316 remote_serial_open (const char *name
)
4318 static int udp_warning
= 0;
4320 /* FIXME: Parsing NAME here is a hack. But we want to warn here instead
4321 of in ser-tcp.c, because it is the remote protocol assuming that the
4322 serial connection is reliable and not the serial connection promising
4324 if (!udp_warning
&& startswith (name
, "udp:"))
4326 warning (_("The remote protocol may be unreliable over UDP.\n"
4327 "Some events may be lost, rendering further debugging "
4332 return serial_open (name
);
4335 /* Inform the target of our permission settings. The permission flags
4336 work without this, but if the target knows the settings, it can do
4337 a couple things. First, it can add its own check, to catch cases
4338 that somehow manage to get by the permissions checks in target
4339 methods. Second, if the target is wired to disallow particular
4340 settings (for instance, a system in the field that is not set up to
4341 be able to stop at a breakpoint), it can object to any unavailable
4345 remote_set_permissions (struct target_ops
*self
)
4347 struct remote_state
*rs
= get_remote_state ();
4349 xsnprintf (rs
->buf
, get_remote_packet_size (), "QAllow:"
4350 "WriteReg:%x;WriteMem:%x;"
4351 "InsertBreak:%x;InsertTrace:%x;"
4352 "InsertFastTrace:%x;Stop:%x",
4353 may_write_registers
, may_write_memory
,
4354 may_insert_breakpoints
, may_insert_tracepoints
,
4355 may_insert_fast_tracepoints
, may_stop
);
4357 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4359 /* If the target didn't like the packet, warn the user. Do not try
4360 to undo the user's settings, that would just be maddening. */
4361 if (strcmp (rs
->buf
, "OK") != 0)
4362 warning (_("Remote refused setting permissions with: %s"), rs
->buf
);
4365 /* This type describes each known response to the qSupported
4367 struct protocol_feature
4369 /* The name of this protocol feature. */
4372 /* The default for this protocol feature. */
4373 enum packet_support default_support
;
4375 /* The function to call when this feature is reported, or after
4376 qSupported processing if the feature is not supported.
4377 The first argument points to this structure. The second
4378 argument indicates whether the packet requested support be
4379 enabled, disabled, or probed (or the default, if this function
4380 is being called at the end of processing and this feature was
4381 not reported). The third argument may be NULL; if not NULL, it
4382 is a NUL-terminated string taken from the packet following
4383 this feature's name and an equals sign. */
4384 void (*func
) (const struct protocol_feature
*, enum packet_support
,
4387 /* The corresponding packet for this feature. Only used if
4388 FUNC is remote_supported_packet. */
4393 remote_supported_packet (const struct protocol_feature
*feature
,
4394 enum packet_support support
,
4395 const char *argument
)
4399 warning (_("Remote qSupported response supplied an unexpected value for"
4400 " \"%s\"."), feature
->name
);
4404 remote_protocol_packets
[feature
->packet
].support
= support
;
4408 remote_packet_size (const struct protocol_feature
*feature
,
4409 enum packet_support support
, const char *value
)
4411 struct remote_state
*rs
= get_remote_state ();
4416 if (support
!= PACKET_ENABLE
)
4419 if (value
== NULL
|| *value
== '\0')
4421 warning (_("Remote target reported \"%s\" without a size."),
4427 packet_size
= strtol (value
, &value_end
, 16);
4428 if (errno
!= 0 || *value_end
!= '\0' || packet_size
< 0)
4430 warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."),
4431 feature
->name
, value
);
4435 /* Record the new maximum packet size. */
4436 rs
->explicit_packet_size
= packet_size
;
4439 static const struct protocol_feature remote_protocol_features
[] = {
4440 { "PacketSize", PACKET_DISABLE
, remote_packet_size
, -1 },
4441 { "qXfer:auxv:read", PACKET_DISABLE
, remote_supported_packet
,
4442 PACKET_qXfer_auxv
},
4443 { "qXfer:exec-file:read", PACKET_DISABLE
, remote_supported_packet
,
4444 PACKET_qXfer_exec_file
},
4445 { "qXfer:features:read", PACKET_DISABLE
, remote_supported_packet
,
4446 PACKET_qXfer_features
},
4447 { "qXfer:libraries:read", PACKET_DISABLE
, remote_supported_packet
,
4448 PACKET_qXfer_libraries
},
4449 { "qXfer:libraries-svr4:read", PACKET_DISABLE
, remote_supported_packet
,
4450 PACKET_qXfer_libraries_svr4
},
4451 { "augmented-libraries-svr4-read", PACKET_DISABLE
,
4452 remote_supported_packet
, PACKET_augmented_libraries_svr4_read_feature
},
4453 { "qXfer:memory-map:read", PACKET_DISABLE
, remote_supported_packet
,
4454 PACKET_qXfer_memory_map
},
4455 { "qXfer:spu:read", PACKET_DISABLE
, remote_supported_packet
,
4456 PACKET_qXfer_spu_read
},
4457 { "qXfer:spu:write", PACKET_DISABLE
, remote_supported_packet
,
4458 PACKET_qXfer_spu_write
},
4459 { "qXfer:osdata:read", PACKET_DISABLE
, remote_supported_packet
,
4460 PACKET_qXfer_osdata
},
4461 { "qXfer:threads:read", PACKET_DISABLE
, remote_supported_packet
,
4462 PACKET_qXfer_threads
},
4463 { "qXfer:traceframe-info:read", PACKET_DISABLE
, remote_supported_packet
,
4464 PACKET_qXfer_traceframe_info
},
4465 { "QPassSignals", PACKET_DISABLE
, remote_supported_packet
,
4466 PACKET_QPassSignals
},
4467 { "QProgramSignals", PACKET_DISABLE
, remote_supported_packet
,
4468 PACKET_QProgramSignals
},
4469 { "QStartNoAckMode", PACKET_DISABLE
, remote_supported_packet
,
4470 PACKET_QStartNoAckMode
},
4471 { "multiprocess", PACKET_DISABLE
, remote_supported_packet
,
4472 PACKET_multiprocess_feature
},
4473 { "QNonStop", PACKET_DISABLE
, remote_supported_packet
, PACKET_QNonStop
},
4474 { "qXfer:siginfo:read", PACKET_DISABLE
, remote_supported_packet
,
4475 PACKET_qXfer_siginfo_read
},
4476 { "qXfer:siginfo:write", PACKET_DISABLE
, remote_supported_packet
,
4477 PACKET_qXfer_siginfo_write
},
4478 { "ConditionalTracepoints", PACKET_DISABLE
, remote_supported_packet
,
4479 PACKET_ConditionalTracepoints
},
4480 { "ConditionalBreakpoints", PACKET_DISABLE
, remote_supported_packet
,
4481 PACKET_ConditionalBreakpoints
},
4482 { "BreakpointCommands", PACKET_DISABLE
, remote_supported_packet
,
4483 PACKET_BreakpointCommands
},
4484 { "FastTracepoints", PACKET_DISABLE
, remote_supported_packet
,
4485 PACKET_FastTracepoints
},
4486 { "StaticTracepoints", PACKET_DISABLE
, remote_supported_packet
,
4487 PACKET_StaticTracepoints
},
4488 {"InstallInTrace", PACKET_DISABLE
, remote_supported_packet
,
4489 PACKET_InstallInTrace
},
4490 { "DisconnectedTracing", PACKET_DISABLE
, remote_supported_packet
,
4491 PACKET_DisconnectedTracing_feature
},
4492 { "ReverseContinue", PACKET_DISABLE
, remote_supported_packet
,
4494 { "ReverseStep", PACKET_DISABLE
, remote_supported_packet
,
4496 { "TracepointSource", PACKET_DISABLE
, remote_supported_packet
,
4497 PACKET_TracepointSource
},
4498 { "QAllow", PACKET_DISABLE
, remote_supported_packet
,
4500 { "EnableDisableTracepoints", PACKET_DISABLE
, remote_supported_packet
,
4501 PACKET_EnableDisableTracepoints_feature
},
4502 { "qXfer:fdpic:read", PACKET_DISABLE
, remote_supported_packet
,
4503 PACKET_qXfer_fdpic
},
4504 { "qXfer:uib:read", PACKET_DISABLE
, remote_supported_packet
,
4506 { "QDisableRandomization", PACKET_DISABLE
, remote_supported_packet
,
4507 PACKET_QDisableRandomization
},
4508 { "QAgent", PACKET_DISABLE
, remote_supported_packet
, PACKET_QAgent
},
4509 { "QTBuffer:size", PACKET_DISABLE
,
4510 remote_supported_packet
, PACKET_QTBuffer_size
},
4511 { "tracenz", PACKET_DISABLE
, remote_supported_packet
, PACKET_tracenz_feature
},
4512 { "Qbtrace:off", PACKET_DISABLE
, remote_supported_packet
, PACKET_Qbtrace_off
},
4513 { "Qbtrace:bts", PACKET_DISABLE
, remote_supported_packet
, PACKET_Qbtrace_bts
},
4514 { "Qbtrace:pt", PACKET_DISABLE
, remote_supported_packet
, PACKET_Qbtrace_pt
},
4515 { "qXfer:btrace:read", PACKET_DISABLE
, remote_supported_packet
,
4516 PACKET_qXfer_btrace
},
4517 { "qXfer:btrace-conf:read", PACKET_DISABLE
, remote_supported_packet
,
4518 PACKET_qXfer_btrace_conf
},
4519 { "Qbtrace-conf:bts:size", PACKET_DISABLE
, remote_supported_packet
,
4520 PACKET_Qbtrace_conf_bts_size
},
4521 { "swbreak", PACKET_DISABLE
, remote_supported_packet
, PACKET_swbreak_feature
},
4522 { "hwbreak", PACKET_DISABLE
, remote_supported_packet
, PACKET_hwbreak_feature
},
4523 { "fork-events", PACKET_DISABLE
, remote_supported_packet
,
4524 PACKET_fork_event_feature
},
4525 { "vfork-events", PACKET_DISABLE
, remote_supported_packet
,
4526 PACKET_vfork_event_feature
},
4527 { "exec-events", PACKET_DISABLE
, remote_supported_packet
,
4528 PACKET_exec_event_feature
},
4529 { "Qbtrace-conf:pt:size", PACKET_DISABLE
, remote_supported_packet
,
4530 PACKET_Qbtrace_conf_pt_size
},
4531 { "vContSupported", PACKET_DISABLE
, remote_supported_packet
, PACKET_vContSupported
},
4532 { "QThreadEvents", PACKET_DISABLE
, remote_supported_packet
, PACKET_QThreadEvents
},
4533 { "no-resumed", PACKET_DISABLE
, remote_supported_packet
, PACKET_no_resumed
},
4536 static char *remote_support_xml
;
4538 /* Register string appended to "xmlRegisters=" in qSupported query. */
4541 register_remote_support_xml (const char *xml
)
4543 #if defined(HAVE_LIBEXPAT)
4544 if (remote_support_xml
== NULL
)
4545 remote_support_xml
= concat ("xmlRegisters=", xml
, (char *) NULL
);
4548 char *copy
= xstrdup (remote_support_xml
+ 13);
4549 char *p
= strtok (copy
, ",");
4553 if (strcmp (p
, xml
) == 0)
4560 while ((p
= strtok (NULL
, ",")) != NULL
);
4563 remote_support_xml
= reconcat (remote_support_xml
,
4564 remote_support_xml
, ",", xml
,
4571 remote_query_supported_append (char *msg
, const char *append
)
4574 return reconcat (msg
, msg
, ";", append
, (char *) NULL
);
4576 return xstrdup (append
);
4580 remote_query_supported (void)
4582 struct remote_state
*rs
= get_remote_state ();
4585 unsigned char seen
[ARRAY_SIZE (remote_protocol_features
)];
4587 /* The packet support flags are handled differently for this packet
4588 than for most others. We treat an error, a disabled packet, and
4589 an empty response identically: any features which must be reported
4590 to be used will be automatically disabled. An empty buffer
4591 accomplishes this, since that is also the representation for a list
4592 containing no features. */
4595 if (packet_support (PACKET_qSupported
) != PACKET_DISABLE
)
4598 struct cleanup
*old_chain
= make_cleanup (free_current_contents
, &q
);
4600 if (packet_set_cmd_state (PACKET_multiprocess_feature
) != AUTO_BOOLEAN_FALSE
)
4601 q
= remote_query_supported_append (q
, "multiprocess+");
4603 if (packet_set_cmd_state (PACKET_swbreak_feature
) != AUTO_BOOLEAN_FALSE
)
4604 q
= remote_query_supported_append (q
, "swbreak+");
4605 if (packet_set_cmd_state (PACKET_hwbreak_feature
) != AUTO_BOOLEAN_FALSE
)
4606 q
= remote_query_supported_append (q
, "hwbreak+");
4608 q
= remote_query_supported_append (q
, "qRelocInsn+");
4612 if (packet_set_cmd_state (PACKET_fork_event_feature
)
4613 != AUTO_BOOLEAN_FALSE
)
4614 q
= remote_query_supported_append (q
, "fork-events+");
4615 if (packet_set_cmd_state (PACKET_vfork_event_feature
)
4616 != AUTO_BOOLEAN_FALSE
)
4617 q
= remote_query_supported_append (q
, "vfork-events+");
4618 if (packet_set_cmd_state (PACKET_exec_event_feature
)
4619 != AUTO_BOOLEAN_FALSE
)
4620 q
= remote_query_supported_append (q
, "exec-events+");
4623 if (packet_set_cmd_state (PACKET_vContSupported
) != AUTO_BOOLEAN_FALSE
)
4624 q
= remote_query_supported_append (q
, "vContSupported+");
4626 if (packet_set_cmd_state (PACKET_QThreadEvents
) != AUTO_BOOLEAN_FALSE
)
4627 q
= remote_query_supported_append (q
, "QThreadEvents+");
4629 if (packet_set_cmd_state (PACKET_no_resumed
) != AUTO_BOOLEAN_FALSE
)
4630 q
= remote_query_supported_append (q
, "no-resumed+");
4632 /* Keep this one last to work around a gdbserver <= 7.10 bug in
4633 the qSupported:xmlRegisters=i386 handling. */
4634 if (remote_support_xml
!= NULL
)
4635 q
= remote_query_supported_append (q
, remote_support_xml
);
4637 q
= reconcat (q
, "qSupported:", q
, (char *) NULL
);
4640 do_cleanups (old_chain
);
4642 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4644 /* If an error occured, warn, but do not return - just reset the
4645 buffer to empty and go on to disable features. */
4646 if (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_qSupported
])
4649 warning (_("Remote failure reply: %s"), rs
->buf
);
4654 memset (seen
, 0, sizeof (seen
));
4659 enum packet_support is_supported
;
4660 char *p
, *end
, *name_end
, *value
;
4662 /* First separate out this item from the rest of the packet. If
4663 there's another item after this, we overwrite the separator
4664 (terminated strings are much easier to work with). */
4666 end
= strchr (p
, ';');
4669 end
= p
+ strlen (p
);
4679 warning (_("empty item in \"qSupported\" response"));
4684 name_end
= strchr (p
, '=');
4687 /* This is a name=value entry. */
4688 is_supported
= PACKET_ENABLE
;
4689 value
= name_end
+ 1;
4698 is_supported
= PACKET_ENABLE
;
4702 is_supported
= PACKET_DISABLE
;
4706 is_supported
= PACKET_SUPPORT_UNKNOWN
;
4710 warning (_("unrecognized item \"%s\" "
4711 "in \"qSupported\" response"), p
);
4717 for (i
= 0; i
< ARRAY_SIZE (remote_protocol_features
); i
++)
4718 if (strcmp (remote_protocol_features
[i
].name
, p
) == 0)
4720 const struct protocol_feature
*feature
;
4723 feature
= &remote_protocol_features
[i
];
4724 feature
->func (feature
, is_supported
, value
);
4729 /* If we increased the packet size, make sure to increase the global
4730 buffer size also. We delay this until after parsing the entire
4731 qSupported packet, because this is the same buffer we were
4733 if (rs
->buf_size
< rs
->explicit_packet_size
)
4735 rs
->buf_size
= rs
->explicit_packet_size
;
4736 rs
->buf
= (char *) xrealloc (rs
->buf
, rs
->buf_size
);
4739 /* Handle the defaults for unmentioned features. */
4740 for (i
= 0; i
< ARRAY_SIZE (remote_protocol_features
); i
++)
4743 const struct protocol_feature
*feature
;
4745 feature
= &remote_protocol_features
[i
];
4746 feature
->func (feature
, feature
->default_support
, NULL
);
4750 /* Remove any of the remote.c targets from target stack. Upper targets depend
4751 on it so remove them first. */
4754 remote_unpush_target (void)
4756 pop_all_targets_at_and_above (process_stratum
);
4760 remote_open_1 (const char *name
, int from_tty
,
4761 struct target_ops
*target
, int extended_p
)
4763 struct remote_state
*rs
= get_remote_state ();
4766 error (_("To open a remote debug connection, you need to specify what\n"
4767 "serial device is attached to the remote system\n"
4768 "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."));
4770 /* See FIXME above. */
4771 if (!target_async_permitted
)
4772 wait_forever_enabled_p
= 1;
4774 /* If we're connected to a running target, target_preopen will kill it.
4775 Ask this question first, before target_preopen has a chance to kill
4777 if (rs
->remote_desc
!= NULL
&& !have_inferiors ())
4780 && !query (_("Already connected to a remote target. Disconnect? ")))
4781 error (_("Still connected."));
4784 /* Here the possibly existing remote target gets unpushed. */
4785 target_preopen (from_tty
);
4787 /* Make sure we send the passed signals list the next time we resume. */
4788 xfree (rs
->last_pass_packet
);
4789 rs
->last_pass_packet
= NULL
;
4791 /* Make sure we send the program signals list the next time we
4793 xfree (rs
->last_program_signals_packet
);
4794 rs
->last_program_signals_packet
= NULL
;
4796 remote_fileio_reset ();
4797 reopen_exec_file ();
4800 rs
->remote_desc
= remote_serial_open (name
);
4801 if (!rs
->remote_desc
)
4802 perror_with_name (name
);
4804 if (baud_rate
!= -1)
4806 if (serial_setbaudrate (rs
->remote_desc
, baud_rate
))
4808 /* The requested speed could not be set. Error out to
4809 top level after closing remote_desc. Take care to
4810 set remote_desc to NULL to avoid closing remote_desc
4812 serial_close (rs
->remote_desc
);
4813 rs
->remote_desc
= NULL
;
4814 perror_with_name (name
);
4818 serial_setparity (rs
->remote_desc
, serial_parity
);
4819 serial_raw (rs
->remote_desc
);
4821 /* If there is something sitting in the buffer we might take it as a
4822 response to a command, which would be bad. */
4823 serial_flush_input (rs
->remote_desc
);
4827 puts_filtered ("Remote debugging using ");
4828 puts_filtered (name
);
4829 puts_filtered ("\n");
4831 push_target (target
); /* Switch to using remote target now. */
4833 /* Register extra event sources in the event loop. */
4834 remote_async_inferior_event_token
4835 = create_async_event_handler (remote_async_inferior_event_handler
,
4837 rs
->notif_state
= remote_notif_state_allocate ();
4839 /* Reset the target state; these things will be queried either by
4840 remote_query_supported or as they are needed. */
4841 reset_all_packet_configs_support ();
4842 rs
->cached_wait_status
= 0;
4843 rs
->explicit_packet_size
= 0;
4845 rs
->extended
= extended_p
;
4846 rs
->waiting_for_stop_reply
= 0;
4847 rs
->ctrlc_pending_p
= 0;
4849 rs
->general_thread
= not_sent_ptid
;
4850 rs
->continue_thread
= not_sent_ptid
;
4851 rs
->remote_traceframe_number
= -1;
4853 /* Probe for ability to use "ThreadInfo" query, as required. */
4854 rs
->use_threadinfo_query
= 1;
4855 rs
->use_threadextra_query
= 1;
4857 readahead_cache_invalidate ();
4859 if (target_async_permitted
)
4861 /* With this target we start out by owning the terminal. */
4862 remote_async_terminal_ours_p
= 1;
4864 /* FIXME: cagney/1999-09-23: During the initial connection it is
4865 assumed that the target is already ready and able to respond to
4866 requests. Unfortunately remote_start_remote() eventually calls
4867 wait_for_inferior() with no timeout. wait_forever_enabled_p gets
4868 around this. Eventually a mechanism that allows
4869 wait_for_inferior() to expect/get timeouts will be
4871 wait_forever_enabled_p
= 0;
4874 /* First delete any symbols previously loaded from shared libraries. */
4875 no_shared_libraries (NULL
, 0);
4878 init_thread_list ();
4880 /* Start the remote connection. If error() or QUIT, discard this
4881 target (we'd otherwise be in an inconsistent state) and then
4882 propogate the error on up the exception chain. This ensures that
4883 the caller doesn't stumble along blindly assuming that the
4884 function succeeded. The CLI doesn't have this problem but other
4885 UI's, such as MI do.
4887 FIXME: cagney/2002-05-19: Instead of re-throwing the exception,
4888 this function should return an error indication letting the
4889 caller restore the previous state. Unfortunately the command
4890 ``target remote'' is directly wired to this function making that
4891 impossible. On a positive note, the CLI side of this problem has
4892 been fixed - the function set_cmd_context() makes it possible for
4893 all the ``target ....'' commands to share a common callback
4894 function. See cli-dump.c. */
4899 remote_start_remote (from_tty
, target
, extended_p
);
4901 CATCH (ex
, RETURN_MASK_ALL
)
4903 /* Pop the partially set up target - unless something else did
4904 already before throwing the exception. */
4905 if (rs
->remote_desc
!= NULL
)
4906 remote_unpush_target ();
4907 if (target_async_permitted
)
4908 wait_forever_enabled_p
= 1;
4909 throw_exception (ex
);
4914 remote_btrace_reset ();
4916 if (target_async_permitted
)
4917 wait_forever_enabled_p
= 1;
4920 /* Detach the specified process. */
4923 remote_detach_pid (int pid
)
4925 struct remote_state
*rs
= get_remote_state ();
4927 if (remote_multi_process_p (rs
))
4928 xsnprintf (rs
->buf
, get_remote_packet_size (), "D;%x", pid
);
4930 strcpy (rs
->buf
, "D");
4933 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4935 if (rs
->buf
[0] == 'O' && rs
->buf
[1] == 'K')
4937 else if (rs
->buf
[0] == '\0')
4938 error (_("Remote doesn't know how to detach"));
4940 error (_("Can't detach process."));
4943 /* This detaches a program to which we previously attached, using
4944 inferior_ptid to identify the process. After this is done, GDB
4945 can be used to debug some other program. We better not have left
4946 any breakpoints in the target program or it'll die when it hits
4950 remote_detach_1 (const char *args
, int from_tty
)
4952 int pid
= ptid_get_pid (inferior_ptid
);
4953 struct remote_state
*rs
= get_remote_state ();
4954 struct thread_info
*tp
= find_thread_ptid (inferior_ptid
);
4958 error (_("Argument given to \"detach\" when remotely debugging."));
4960 if (!target_has_execution
)
4961 error (_("No process to detach from."));
4965 char *exec_file
= get_exec_file (0);
4966 if (exec_file
== NULL
)
4968 printf_unfiltered (_("Detaching from program: %s, %s\n"), exec_file
,
4969 target_pid_to_str (pid_to_ptid (pid
)));
4970 gdb_flush (gdb_stdout
);
4973 /* Tell the remote target to detach. */
4974 remote_detach_pid (pid
);
4976 if (from_tty
&& !rs
->extended
)
4977 puts_filtered (_("Ending remote debugging.\n"));
4979 /* Check to see if we are detaching a fork parent. Note that if we
4980 are detaching a fork child, tp == NULL. */
4981 is_fork_parent
= (tp
!= NULL
4982 && tp
->pending_follow
.kind
== TARGET_WAITKIND_FORKED
);
4984 /* If doing detach-on-fork, we don't mourn, because that will delete
4985 breakpoints that should be available for the followed inferior. */
4986 if (!is_fork_parent
)
4987 target_mourn_inferior ();
4990 inferior_ptid
= null_ptid
;
4991 detach_inferior (pid
);
4996 remote_detach (struct target_ops
*ops
, const char *args
, int from_tty
)
4998 remote_detach_1 (args
, from_tty
);
5002 extended_remote_detach (struct target_ops
*ops
, const char *args
, int from_tty
)
5004 remote_detach_1 (args
, from_tty
);
5007 /* Target follow-fork function for remote targets. On entry, and
5008 at return, the current inferior is the fork parent.
5010 Note that although this is currently only used for extended-remote,
5011 it is named remote_follow_fork in anticipation of using it for the
5012 remote target as well. */
5015 remote_follow_fork (struct target_ops
*ops
, int follow_child
,
5018 struct remote_state
*rs
= get_remote_state ();
5019 enum target_waitkind kind
= inferior_thread ()->pending_follow
.kind
;
5021 if ((kind
== TARGET_WAITKIND_FORKED
&& remote_fork_event_p (rs
))
5022 || (kind
== TARGET_WAITKIND_VFORKED
&& remote_vfork_event_p (rs
)))
5024 /* When following the parent and detaching the child, we detach
5025 the child here. For the case of following the child and
5026 detaching the parent, the detach is done in the target-
5027 independent follow fork code in infrun.c. We can't use
5028 target_detach when detaching an unfollowed child because
5029 the client side doesn't know anything about the child. */
5030 if (detach_fork
&& !follow_child
)
5032 /* Detach the fork child. */
5036 child_ptid
= inferior_thread ()->pending_follow
.value
.related_pid
;
5037 child_pid
= ptid_get_pid (child_ptid
);
5039 remote_detach_pid (child_pid
);
5040 detach_inferior (child_pid
);
5046 /* Target follow-exec function for remote targets. Save EXECD_PATHNAME
5047 in the program space of the new inferior. On entry and at return the
5048 current inferior is the exec'ing inferior. INF is the new exec'd
5049 inferior, which may be the same as the exec'ing inferior unless
5050 follow-exec-mode is "new". */
5053 remote_follow_exec (struct target_ops
*ops
,
5054 struct inferior
*inf
, char *execd_pathname
)
5056 /* We know that this is a target file name, so if it has the "target:"
5057 prefix we strip it off before saving it in the program space. */
5058 if (is_target_filename (execd_pathname
))
5059 execd_pathname
+= strlen (TARGET_SYSROOT_PREFIX
);
5061 set_pspace_remote_exec_file (inf
->pspace
, execd_pathname
);
5064 /* Same as remote_detach, but don't send the "D" packet; just disconnect. */
5067 remote_disconnect (struct target_ops
*target
, const char *args
, int from_tty
)
5070 error (_("Argument given to \"disconnect\" when remotely debugging."));
5072 /* Make sure we unpush even the extended remote targets; mourn
5073 won't do it. So call remote_mourn directly instead of
5074 target_mourn_inferior. */
5075 remote_mourn (target
);
5078 puts_filtered ("Ending remote debugging.\n");
5081 /* Attach to the process specified by ARGS. If FROM_TTY is non-zero,
5082 be chatty about it. */
5085 extended_remote_attach (struct target_ops
*target
, const char *args
,
5088 struct remote_state
*rs
= get_remote_state ();
5090 char *wait_status
= NULL
;
5092 pid
= parse_pid_to_attach (args
);
5094 /* Remote PID can be freely equal to getpid, do not check it here the same
5095 way as in other targets. */
5097 if (packet_support (PACKET_vAttach
) == PACKET_DISABLE
)
5098 error (_("This target does not support attaching to a process"));
5102 char *exec_file
= get_exec_file (0);
5105 printf_unfiltered (_("Attaching to program: %s, %s\n"), exec_file
,
5106 target_pid_to_str (pid_to_ptid (pid
)));
5108 printf_unfiltered (_("Attaching to %s\n"),
5109 target_pid_to_str (pid_to_ptid (pid
)));
5111 gdb_flush (gdb_stdout
);
5114 xsnprintf (rs
->buf
, get_remote_packet_size (), "vAttach;%x", pid
);
5116 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5118 switch (packet_ok (rs
->buf
,
5119 &remote_protocol_packets
[PACKET_vAttach
]))
5122 if (!target_is_non_stop_p ())
5124 /* Save the reply for later. */
5125 wait_status
= (char *) alloca (strlen (rs
->buf
) + 1);
5126 strcpy (wait_status
, rs
->buf
);
5128 else if (strcmp (rs
->buf
, "OK") != 0)
5129 error (_("Attaching to %s failed with: %s"),
5130 target_pid_to_str (pid_to_ptid (pid
)),
5133 case PACKET_UNKNOWN
:
5134 error (_("This target does not support attaching to a process"));
5136 error (_("Attaching to %s failed"),
5137 target_pid_to_str (pid_to_ptid (pid
)));
5140 set_current_inferior (remote_add_inferior (0, pid
, 1, 0));
5142 inferior_ptid
= pid_to_ptid (pid
);
5144 if (target_is_non_stop_p ())
5146 struct thread_info
*thread
;
5148 /* Get list of threads. */
5149 remote_update_thread_list (target
);
5151 thread
= first_thread_of_process (pid
);
5153 inferior_ptid
= thread
->ptid
;
5155 inferior_ptid
= pid_to_ptid (pid
);
5157 /* Invalidate our notion of the remote current thread. */
5158 record_currthread (rs
, minus_one_ptid
);
5162 /* Now, if we have thread information, update inferior_ptid. */
5163 inferior_ptid
= remote_current_thread (inferior_ptid
);
5165 /* Add the main thread to the thread list. */
5166 add_thread_silent (inferior_ptid
);
5169 /* Next, if the target can specify a description, read it. We do
5170 this before anything involving memory or registers. */
5171 target_find_description ();
5173 if (!target_is_non_stop_p ())
5175 /* Use the previously fetched status. */
5176 gdb_assert (wait_status
!= NULL
);
5178 if (target_can_async_p ())
5180 struct notif_event
*reply
5181 = remote_notif_parse (¬if_client_stop
, wait_status
);
5183 push_stop_reply ((struct stop_reply
*) reply
);
5189 gdb_assert (wait_status
!= NULL
);
5190 strcpy (rs
->buf
, wait_status
);
5191 rs
->cached_wait_status
= 1;
5195 gdb_assert (wait_status
== NULL
);
5198 /* Implementation of the to_post_attach method. */
5201 extended_remote_post_attach (struct target_ops
*ops
, int pid
)
5203 /* Get text, data & bss offsets. */
5206 /* In certain cases GDB might not have had the chance to start
5207 symbol lookup up until now. This could happen if the debugged
5208 binary is not using shared libraries, the vsyscall page is not
5209 present (on Linux) and the binary itself hadn't changed since the
5210 debugging process was started. */
5211 if (symfile_objfile
!= NULL
)
5212 remote_check_symbols();
5216 /* Check for the availability of vCont. This function should also check
5220 remote_vcont_probe (struct remote_state
*rs
)
5224 strcpy (rs
->buf
, "vCont?");
5226 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5229 /* Make sure that the features we assume are supported. */
5230 if (startswith (buf
, "vCont"))
5233 int support_c
, support_C
;
5235 rs
->supports_vCont
.s
= 0;
5236 rs
->supports_vCont
.S
= 0;
5239 rs
->supports_vCont
.t
= 0;
5240 rs
->supports_vCont
.r
= 0;
5241 while (p
&& *p
== ';')
5244 if (*p
== 's' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
5245 rs
->supports_vCont
.s
= 1;
5246 else if (*p
== 'S' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
5247 rs
->supports_vCont
.S
= 1;
5248 else if (*p
== 'c' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
5250 else if (*p
== 'C' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
5252 else if (*p
== 't' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
5253 rs
->supports_vCont
.t
= 1;
5254 else if (*p
== 'r' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
5255 rs
->supports_vCont
.r
= 1;
5257 p
= strchr (p
, ';');
5260 /* If c, and C are not all supported, we can't use vCont. Clearing
5261 BUF will make packet_ok disable the packet. */
5262 if (!support_c
|| !support_C
)
5266 packet_ok (buf
, &remote_protocol_packets
[PACKET_vCont
]);
5269 /* Helper function for building "vCont" resumptions. Write a
5270 resumption to P. ENDP points to one-passed-the-end of the buffer
5271 we're allowed to write to. Returns BUF+CHARACTERS_WRITTEN. The
5272 thread to be resumed is PTID; STEP and SIGGNAL indicate whether the
5273 resumed thread should be single-stepped and/or signalled. If PTID
5274 equals minus_one_ptid, then all threads are resumed; if PTID
5275 represents a process, then all threads of the process are resumed;
5276 the thread to be stepped and/or signalled is given in the global
5280 append_resumption (char *p
, char *endp
,
5281 ptid_t ptid
, int step
, enum gdb_signal siggnal
)
5283 struct remote_state
*rs
= get_remote_state ();
5285 if (step
&& siggnal
!= GDB_SIGNAL_0
)
5286 p
+= xsnprintf (p
, endp
- p
, ";S%02x", siggnal
);
5288 /* GDB is willing to range step. */
5289 && use_range_stepping
5290 /* Target supports range stepping. */
5291 && rs
->supports_vCont
.r
5292 /* We don't currently support range stepping multiple
5293 threads with a wildcard (though the protocol allows it,
5294 so stubs shouldn't make an active effort to forbid
5296 && !(remote_multi_process_p (rs
) && ptid_is_pid (ptid
)))
5298 struct thread_info
*tp
;
5300 if (ptid_equal (ptid
, minus_one_ptid
))
5302 /* If we don't know about the target thread's tid, then
5303 we're resuming magic_null_ptid (see caller). */
5304 tp
= find_thread_ptid (magic_null_ptid
);
5307 tp
= find_thread_ptid (ptid
);
5308 gdb_assert (tp
!= NULL
);
5310 if (tp
->control
.may_range_step
)
5312 int addr_size
= gdbarch_addr_bit (target_gdbarch ()) / 8;
5314 p
+= xsnprintf (p
, endp
- p
, ";r%s,%s",
5315 phex_nz (tp
->control
.step_range_start
,
5317 phex_nz (tp
->control
.step_range_end
,
5321 p
+= xsnprintf (p
, endp
- p
, ";s");
5324 p
+= xsnprintf (p
, endp
- p
, ";s");
5325 else if (siggnal
!= GDB_SIGNAL_0
)
5326 p
+= xsnprintf (p
, endp
- p
, ";C%02x", siggnal
);
5328 p
+= xsnprintf (p
, endp
- p
, ";c");
5330 if (remote_multi_process_p (rs
) && ptid_is_pid (ptid
))
5334 /* All (-1) threads of process. */
5335 nptid
= ptid_build (ptid_get_pid (ptid
), -1, 0);
5337 p
+= xsnprintf (p
, endp
- p
, ":");
5338 p
= write_ptid (p
, endp
, nptid
);
5340 else if (!ptid_equal (ptid
, minus_one_ptid
))
5342 p
+= xsnprintf (p
, endp
- p
, ":");
5343 p
= write_ptid (p
, endp
, ptid
);
5349 /* Clear the thread's private info on resume. */
5352 resume_clear_thread_private_info (struct thread_info
*thread
)
5354 if (thread
->priv
!= NULL
)
5356 thread
->priv
->stop_reason
= TARGET_STOPPED_BY_NO_REASON
;
5357 thread
->priv
->watch_data_address
= 0;
5361 /* Append a vCont continue-with-signal action for threads that have a
5362 non-zero stop signal. */
5365 append_pending_thread_resumptions (char *p
, char *endp
, ptid_t ptid
)
5367 struct thread_info
*thread
;
5369 ALL_NON_EXITED_THREADS (thread
)
5370 if (ptid_match (thread
->ptid
, ptid
)
5371 && !ptid_equal (inferior_ptid
, thread
->ptid
)
5372 && thread
->suspend
.stop_signal
!= GDB_SIGNAL_0
)
5374 p
= append_resumption (p
, endp
, thread
->ptid
,
5375 0, thread
->suspend
.stop_signal
);
5376 thread
->suspend
.stop_signal
= GDB_SIGNAL_0
;
5377 resume_clear_thread_private_info (thread
);
5383 /* Resume the remote inferior by using a "vCont" packet. The thread
5384 to be resumed is PTID; STEP and SIGGNAL indicate whether the
5385 resumed thread should be single-stepped and/or signalled. If PTID
5386 equals minus_one_ptid, then all threads are resumed; the thread to
5387 be stepped and/or signalled is given in the global INFERIOR_PTID.
5388 This function returns non-zero iff it resumes the inferior.
5390 This function issues a strict subset of all possible vCont commands at the
5394 remote_vcont_resume (ptid_t ptid
, int step
, enum gdb_signal siggnal
)
5396 struct remote_state
*rs
= get_remote_state ();
5400 if (packet_support (PACKET_vCont
) == PACKET_SUPPORT_UNKNOWN
)
5401 remote_vcont_probe (rs
);
5403 if (packet_support (PACKET_vCont
) == PACKET_DISABLE
)
5407 endp
= rs
->buf
+ get_remote_packet_size ();
5409 /* If we could generate a wider range of packets, we'd have to worry
5410 about overflowing BUF. Should there be a generic
5411 "multi-part-packet" packet? */
5413 p
+= xsnprintf (p
, endp
- p
, "vCont");
5415 if (ptid_equal (ptid
, magic_null_ptid
))
5417 /* MAGIC_NULL_PTID means that we don't have any active threads,
5418 so we don't have any TID numbers the inferior will
5419 understand. Make sure to only send forms that do not specify
5421 append_resumption (p
, endp
, minus_one_ptid
, step
, siggnal
);
5423 else if (ptid_equal (ptid
, minus_one_ptid
) || ptid_is_pid (ptid
))
5425 /* Resume all threads (of all processes, or of a single
5426 process), with preference for INFERIOR_PTID. This assumes
5427 inferior_ptid belongs to the set of all threads we are about
5429 if (step
|| siggnal
!= GDB_SIGNAL_0
)
5431 /* Step inferior_ptid, with or without signal. */
5432 p
= append_resumption (p
, endp
, inferior_ptid
, step
, siggnal
);
5435 /* Also pass down any pending signaled resumption for other
5436 threads not the current. */
5437 p
= append_pending_thread_resumptions (p
, endp
, ptid
);
5439 /* And continue others without a signal. */
5440 append_resumption (p
, endp
, ptid
, /*step=*/ 0, GDB_SIGNAL_0
);
5444 /* Scheduler locking; resume only PTID. */
5445 append_resumption (p
, endp
, ptid
, step
, siggnal
);
5448 gdb_assert (strlen (rs
->buf
) < get_remote_packet_size ());
5451 if (target_is_non_stop_p ())
5453 /* In non-stop, the stub replies to vCont with "OK". The stop
5454 reply will be reported asynchronously by means of a `%Stop'
5456 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5457 if (strcmp (rs
->buf
, "OK") != 0)
5458 error (_("Unexpected vCont reply in non-stop mode: %s"), rs
->buf
);
5464 /* Tell the remote machine to resume. */
5467 remote_resume (struct target_ops
*ops
,
5468 ptid_t ptid
, int step
, enum gdb_signal siggnal
)
5470 struct remote_state
*rs
= get_remote_state ();
5472 struct thread_info
*thread
;
5474 /* In all-stop, we can't mark REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN
5475 (explained in remote-notif.c:handle_notification) so
5476 remote_notif_process is not called. We need find a place where
5477 it is safe to start a 'vNotif' sequence. It is good to do it
5478 before resuming inferior, because inferior was stopped and no RSP
5479 traffic at that moment. */
5480 if (!target_is_non_stop_p ())
5481 remote_notif_process (rs
->notif_state
, ¬if_client_stop
);
5483 rs
->last_sent_signal
= siggnal
;
5484 rs
->last_sent_step
= step
;
5486 /* The vCont packet doesn't need to specify threads via Hc. */
5487 /* No reverse support (yet) for vCont. */
5488 if (execution_direction
!= EXEC_REVERSE
)
5489 if (remote_vcont_resume (ptid
, step
, siggnal
))
5492 /* All other supported resume packets do use Hc, so set the continue
5494 if (ptid_equal (ptid
, minus_one_ptid
))
5495 set_continue_thread (any_thread_ptid
);
5497 set_continue_thread (ptid
);
5499 ALL_NON_EXITED_THREADS (thread
)
5500 resume_clear_thread_private_info (thread
);
5503 if (execution_direction
== EXEC_REVERSE
)
5505 /* We don't pass signals to the target in reverse exec mode. */
5506 if (info_verbose
&& siggnal
!= GDB_SIGNAL_0
)
5507 warning (_(" - Can't pass signal %d to target in reverse: ignored."),
5510 if (step
&& packet_support (PACKET_bs
) == PACKET_DISABLE
)
5511 error (_("Remote reverse-step not supported."));
5512 if (!step
&& packet_support (PACKET_bc
) == PACKET_DISABLE
)
5513 error (_("Remote reverse-continue not supported."));
5515 strcpy (buf
, step
? "bs" : "bc");
5517 else if (siggnal
!= GDB_SIGNAL_0
)
5519 buf
[0] = step
? 'S' : 'C';
5520 buf
[1] = tohex (((int) siggnal
>> 4) & 0xf);
5521 buf
[2] = tohex (((int) siggnal
) & 0xf);
5525 strcpy (buf
, step
? "s" : "c");
5530 /* We are about to start executing the inferior, let's register it
5531 with the event loop. NOTE: this is the one place where all the
5532 execution commands end up. We could alternatively do this in each
5533 of the execution commands in infcmd.c. */
5534 /* FIXME: ezannoni 1999-09-28: We may need to move this out of here
5535 into infcmd.c in order to allow inferior function calls to work
5536 NOT asynchronously. */
5537 if (target_can_async_p ())
5540 /* We've just told the target to resume. The remote server will
5541 wait for the inferior to stop, and then send a stop reply. In
5542 the mean time, we can't start another command/query ourselves
5543 because the stub wouldn't be ready to process it. This applies
5544 only to the base all-stop protocol, however. In non-stop (which
5545 only supports vCont), the stub replies with an "OK", and is
5546 immediate able to process further serial input. */
5547 if (!target_is_non_stop_p ())
5548 rs
->waiting_for_stop_reply
= 1;
5552 /* Set up the signal handler for SIGINT, while the target is
5553 executing, ovewriting the 'regular' SIGINT signal handler. */
5555 async_initialize_sigint_signal_handler (void)
5557 signal (SIGINT
, async_handle_remote_sigint
);
5560 /* Signal handler for SIGINT, while the target is executing. */
5562 async_handle_remote_sigint (int sig
)
5564 signal (sig
, async_handle_remote_sigint_twice
);
5565 /* Note we need to go through gdb_call_async_signal_handler in order
5566 to wake up the event loop on Windows. */
5567 gdb_call_async_signal_handler (async_sigint_remote_token
, 0);
5570 /* Signal handler for SIGINT, installed after SIGINT has already been
5571 sent once. It will take effect the second time that the user sends
5574 async_handle_remote_sigint_twice (int sig
)
5576 signal (sig
, async_handle_remote_sigint
);
5577 /* See note in async_handle_remote_sigint. */
5578 gdb_call_async_signal_handler (async_sigint_remote_twice_token
, 0);
5581 /* Implementation of to_check_pending_interrupt. */
5584 remote_check_pending_interrupt (struct target_ops
*self
)
5586 struct async_signal_handler
*token
= async_sigint_remote_twice_token
;
5588 if (async_signal_handler_is_marked (token
))
5590 clear_async_signal_handler (token
);
5591 call_async_signal_handler (token
);
5595 /* Perform the real interruption of the target execution, in response
5598 async_remote_interrupt (gdb_client_data arg
)
5601 fprintf_unfiltered (gdb_stdlog
, "async_remote_interrupt called\n");
5603 target_interrupt (inferior_ptid
);
5606 /* Perform interrupt, if the first attempt did not succeed. Just give
5607 up on the target alltogether. */
5609 async_remote_interrupt_twice (gdb_client_data arg
)
5612 fprintf_unfiltered (gdb_stdlog
, "async_remote_interrupt_twice called\n");
5617 /* Reinstall the usual SIGINT handlers, after the target has
5620 async_cleanup_sigint_signal_handler (void *dummy
)
5622 signal (SIGINT
, handle_sigint
);
5625 /* Send ^C to target to halt it. Target will respond, and send us a
5627 static void (*ofunc
) (int);
5629 /* The command line interface's interrupt routine. This function is installed
5630 as a signal handler for SIGINT. The first time a user requests an
5631 interrupt, we call remote_interrupt to send a break or ^C. If there is no
5632 response from the target (it didn't stop when the user requested it),
5633 we ask the user if he'd like to detach from the target. */
5636 sync_remote_interrupt (int signo
)
5638 /* If this doesn't work, try more severe steps. */
5639 signal (signo
, sync_remote_interrupt_twice
);
5641 gdb_call_async_signal_handler (async_sigint_remote_token
, 1);
5644 /* The user typed ^C twice. */
5647 sync_remote_interrupt_twice (int signo
)
5649 signal (signo
, ofunc
);
5650 gdb_call_async_signal_handler (async_sigint_remote_twice_token
, 1);
5651 signal (signo
, sync_remote_interrupt
);
5654 /* Non-stop version of target_stop. Uses `vCont;t' to stop a remote
5655 thread, all threads of a remote process, or all threads of all
5659 remote_stop_ns (ptid_t ptid
)
5661 struct remote_state
*rs
= get_remote_state ();
5663 char *endp
= rs
->buf
+ get_remote_packet_size ();
5665 if (packet_support (PACKET_vCont
) == PACKET_SUPPORT_UNKNOWN
)
5666 remote_vcont_probe (rs
);
5668 if (!rs
->supports_vCont
.t
)
5669 error (_("Remote server does not support stopping threads"));
5671 if (ptid_equal (ptid
, minus_one_ptid
)
5672 || (!remote_multi_process_p (rs
) && ptid_is_pid (ptid
)))
5673 p
+= xsnprintf (p
, endp
- p
, "vCont;t");
5678 p
+= xsnprintf (p
, endp
- p
, "vCont;t:");
5680 if (ptid_is_pid (ptid
))
5681 /* All (-1) threads of process. */
5682 nptid
= ptid_build (ptid_get_pid (ptid
), -1, 0);
5685 /* Small optimization: if we already have a stop reply for
5686 this thread, no use in telling the stub we want this
5688 if (peek_stop_reply (ptid
))
5694 write_ptid (p
, endp
, nptid
);
5697 /* In non-stop, we get an immediate OK reply. The stop reply will
5698 come in asynchronously by notification. */
5700 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5701 if (strcmp (rs
->buf
, "OK") != 0)
5702 error (_("Stopping %s failed: %s"), target_pid_to_str (ptid
), rs
->buf
);
5705 /* All-stop version of target_interrupt. Sends a break or a ^C to
5706 interrupt the remote target. It is undefined which thread of which
5707 process reports the interrupt. */
5710 remote_interrupt_as (void)
5712 struct remote_state
*rs
= get_remote_state ();
5714 rs
->ctrlc_pending_p
= 1;
5716 /* If the inferior is stopped already, but the core didn't know
5717 about it yet, just ignore the request. The cached wait status
5718 will be collected in remote_wait. */
5719 if (rs
->cached_wait_status
)
5722 /* Send interrupt_sequence to remote target. */
5723 send_interrupt_sequence ();
5726 /* Non-stop version of target_interrupt. Uses `vCtrlC' to interrupt
5727 the remote target. It is undefined which thread of which process
5728 reports the interrupt. Returns true if the packet is supported by
5729 the server, false otherwise. */
5732 remote_interrupt_ns (void)
5734 struct remote_state
*rs
= get_remote_state ();
5736 char *endp
= rs
->buf
+ get_remote_packet_size ();
5738 xsnprintf (p
, endp
- p
, "vCtrlC");
5740 /* In non-stop, we get an immediate OK reply. The stop reply will
5741 come in asynchronously by notification. */
5743 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5745 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_vCtrlC
]))
5749 case PACKET_UNKNOWN
:
5752 error (_("Interrupting target failed: %s"), rs
->buf
);
5758 /* Implement the to_stop function for the remote targets. */
5761 remote_stop (struct target_ops
*self
, ptid_t ptid
)
5764 fprintf_unfiltered (gdb_stdlog
, "remote_stop called\n");
5766 if (target_is_non_stop_p ())
5767 remote_stop_ns (ptid
);
5770 /* We don't currently have a way to transparently pause the
5771 remote target in all-stop mode. Interrupt it instead. */
5772 remote_interrupt_as ();
5776 /* Implement the to_interrupt function for the remote targets. */
5779 remote_interrupt (struct target_ops
*self
, ptid_t ptid
)
5782 fprintf_unfiltered (gdb_stdlog
, "remote_interrupt called\n");
5786 /* In non-stop mode, we always stop with no signal instead. */
5787 remote_stop_ns (ptid
);
5791 /* In all-stop, we emulate ^C-ing the remote target's
5793 if (target_is_non_stop_p ())
5795 if (!remote_interrupt_ns ())
5797 /* No support for ^C-ing the remote target. Stop it
5798 (with no signal) instead. */
5799 remote_stop_ns (ptid
);
5803 remote_interrupt_as ();
5807 /* Ask the user what to do when an interrupt is received. */
5810 interrupt_query (void)
5812 struct remote_state
*rs
= get_remote_state ();
5813 struct cleanup
*old_chain
;
5815 old_chain
= make_cleanup_restore_target_terminal ();
5816 target_terminal_ours ();
5818 if (rs
->waiting_for_stop_reply
&& rs
->ctrlc_pending_p
)
5820 if (query (_("The target is not responding to interrupt requests.\n"
5821 "Stop debugging it? ")))
5823 remote_unpush_target ();
5824 throw_error (TARGET_CLOSE_ERROR
, _("Disconnected from target."));
5829 if (query (_("Interrupted while waiting for the program.\n"
5830 "Give up waiting? ")))
5834 do_cleanups (old_chain
);
5837 /* Enable/disable target terminal ownership. Most targets can use
5838 terminal groups to control terminal ownership. Remote targets are
5839 different in that explicit transfer of ownership to/from GDB/target
5843 remote_terminal_inferior (struct target_ops
*self
)
5845 if (!target_async_permitted
)
5846 /* Nothing to do. */
5849 /* FIXME: cagney/1999-09-27: Make calls to target_terminal_*()
5850 idempotent. The event-loop GDB talking to an asynchronous target
5851 with a synchronous command calls this function from both
5852 event-top.c and infrun.c/infcmd.c. Once GDB stops trying to
5853 transfer the terminal to the target when it shouldn't this guard
5855 if (!remote_async_terminal_ours_p
)
5857 delete_file_handler (input_fd
);
5858 remote_async_terminal_ours_p
= 0;
5859 async_initialize_sigint_signal_handler ();
5860 /* NOTE: At this point we could also register our selves as the
5861 recipient of all input. Any characters typed could then be
5862 passed on down to the target. */
5866 remote_terminal_ours (struct target_ops
*self
)
5868 if (!target_async_permitted
)
5869 /* Nothing to do. */
5872 /* See FIXME in remote_terminal_inferior. */
5873 if (remote_async_terminal_ours_p
)
5875 async_cleanup_sigint_signal_handler (NULL
);
5876 add_file_handler (input_fd
, stdin_event_handler
, 0);
5877 remote_async_terminal_ours_p
= 1;
5881 remote_console_output (char *msg
)
5885 for (p
= msg
; p
[0] && p
[1]; p
+= 2)
5888 char c
= fromhex (p
[0]) * 16 + fromhex (p
[1]);
5892 fputs_unfiltered (tb
, gdb_stdtarg
);
5894 gdb_flush (gdb_stdtarg
);
5897 typedef struct cached_reg
5900 gdb_byte data
[MAX_REGISTER_SIZE
];
5903 DEF_VEC_O(cached_reg_t
);
5905 typedef struct stop_reply
5907 struct notif_event base
;
5909 /* The identifier of the thread about this event */
5912 /* The remote state this event is associated with. When the remote
5913 connection, represented by a remote_state object, is closed,
5914 all the associated stop_reply events should be released. */
5915 struct remote_state
*rs
;
5917 struct target_waitstatus ws
;
5919 /* Expedited registers. This makes remote debugging a bit more
5920 efficient for those targets that provide critical registers as
5921 part of their normal status mechanism (as another roundtrip to
5922 fetch them is avoided). */
5923 VEC(cached_reg_t
) *regcache
;
5925 enum target_stop_reason stop_reason
;
5927 CORE_ADDR watch_data_address
;
5932 DECLARE_QUEUE_P (stop_reply_p
);
5933 DEFINE_QUEUE_P (stop_reply_p
);
5934 /* The list of already fetched and acknowledged stop events. This
5935 queue is used for notification Stop, and other notifications
5936 don't need queue for their events, because the notification events
5937 of Stop can't be consumed immediately, so that events should be
5938 queued first, and be consumed by remote_wait_{ns,as} one per
5939 time. Other notifications can consume their events immediately,
5940 so queue is not needed for them. */
5941 static QUEUE (stop_reply_p
) *stop_reply_queue
;
5944 stop_reply_xfree (struct stop_reply
*r
)
5946 notif_event_xfree ((struct notif_event
*) r
);
5949 /* Return the length of the stop reply queue. */
5952 stop_reply_queue_length (void)
5954 return QUEUE_length (stop_reply_p
, stop_reply_queue
);
5958 remote_notif_stop_parse (struct notif_client
*self
, char *buf
,
5959 struct notif_event
*event
)
5961 remote_parse_stop_reply (buf
, (struct stop_reply
*) event
);
5965 remote_notif_stop_ack (struct notif_client
*self
, char *buf
,
5966 struct notif_event
*event
)
5968 struct stop_reply
*stop_reply
= (struct stop_reply
*) event
;
5971 putpkt ((char *) self
->ack_command
);
5973 if (stop_reply
->ws
.kind
== TARGET_WAITKIND_IGNORE
)
5974 /* We got an unknown stop reply. */
5975 error (_("Unknown stop reply"));
5977 push_stop_reply (stop_reply
);
5981 remote_notif_stop_can_get_pending_events (struct notif_client
*self
)
5983 /* We can't get pending events in remote_notif_process for
5984 notification stop, and we have to do this in remote_wait_ns
5985 instead. If we fetch all queued events from stub, remote stub
5986 may exit and we have no chance to process them back in
5988 mark_async_event_handler (remote_async_inferior_event_token
);
5993 stop_reply_dtr (struct notif_event
*event
)
5995 struct stop_reply
*r
= (struct stop_reply
*) event
;
5997 VEC_free (cached_reg_t
, r
->regcache
);
6000 static struct notif_event
*
6001 remote_notif_stop_alloc_reply (void)
6003 /* We cast to a pointer to the "base class". */
6004 struct notif_event
*r
= (struct notif_event
*) XNEW (struct stop_reply
);
6006 r
->dtr
= stop_reply_dtr
;
6011 /* A client of notification Stop. */
6013 struct notif_client notif_client_stop
=
6017 remote_notif_stop_parse
,
6018 remote_notif_stop_ack
,
6019 remote_notif_stop_can_get_pending_events
,
6020 remote_notif_stop_alloc_reply
,
6024 /* A parameter to pass data in and out. */
6026 struct queue_iter_param
6029 struct stop_reply
*output
;
6032 /* Determine if THREAD is a pending fork parent thread. ARG contains
6033 the pid of the process that owns the threads we want to check, or
6034 -1 if we want to check all threads. */
6037 is_pending_fork_parent (struct target_waitstatus
*ws
, int event_pid
,
6040 if (ws
->kind
== TARGET_WAITKIND_FORKED
6041 || ws
->kind
== TARGET_WAITKIND_VFORKED
)
6043 if (event_pid
== -1 || event_pid
== ptid_get_pid (thread_ptid
))
6050 /* Check whether EVENT is a fork event, and if it is, remove the
6051 fork child from the context list passed in DATA. */
6054 remove_child_of_pending_fork (QUEUE (stop_reply_p
) *q
,
6055 QUEUE_ITER (stop_reply_p
) *iter
,
6059 struct queue_iter_param
*param
= (struct queue_iter_param
*) data
;
6060 struct threads_listing_context
*context
6061 = (struct threads_listing_context
*) param
->input
;
6063 if (event
->ws
.kind
== TARGET_WAITKIND_FORKED
6064 || event
->ws
.kind
== TARGET_WAITKIND_VFORKED
6065 || event
->ws
.kind
== TARGET_WAITKIND_THREAD_EXITED
)
6066 threads_listing_context_remove (&event
->ws
, context
);
6071 /* If CONTEXT contains any fork child threads that have not been
6072 reported yet, remove them from the CONTEXT list. If such a
6073 thread exists it is because we are stopped at a fork catchpoint
6074 and have not yet called follow_fork, which will set up the
6075 host-side data structures for the new process. */
6078 remove_new_fork_children (struct threads_listing_context
*context
)
6080 struct thread_info
* thread
;
6082 struct notif_client
*notif
= ¬if_client_stop
;
6083 struct queue_iter_param param
;
6085 /* For any threads stopped at a fork event, remove the corresponding
6086 fork child threads from the CONTEXT list. */
6087 ALL_NON_EXITED_THREADS (thread
)
6089 struct target_waitstatus
*ws
= &thread
->pending_follow
;
6091 if (is_pending_fork_parent (ws
, pid
, thread
->ptid
))
6093 threads_listing_context_remove (ws
, context
);
6097 /* Check for any pending fork events (not reported or processed yet)
6098 in process PID and remove those fork child threads from the
6099 CONTEXT list as well. */
6100 remote_notif_get_pending_events (notif
);
6101 param
.input
= context
;
6102 param
.output
= NULL
;
6103 QUEUE_iterate (stop_reply_p
, stop_reply_queue
,
6104 remove_child_of_pending_fork
, ¶m
);
6107 /* Remove stop replies in the queue if its pid is equal to the given
6111 remove_stop_reply_for_inferior (QUEUE (stop_reply_p
) *q
,
6112 QUEUE_ITER (stop_reply_p
) *iter
,
6116 struct queue_iter_param
*param
= (struct queue_iter_param
*) data
;
6117 struct inferior
*inf
= (struct inferior
*) param
->input
;
6119 if (ptid_get_pid (event
->ptid
) == inf
->pid
)
6121 stop_reply_xfree (event
);
6122 QUEUE_remove_elem (stop_reply_p
, q
, iter
);
6128 /* Discard all pending stop replies of inferior INF. */
6131 discard_pending_stop_replies (struct inferior
*inf
)
6134 struct queue_iter_param param
;
6135 struct stop_reply
*reply
;
6136 struct remote_state
*rs
= get_remote_state ();
6137 struct remote_notif_state
*rns
= rs
->notif_state
;
6139 /* This function can be notified when an inferior exists. When the
6140 target is not remote, the notification state is NULL. */
6141 if (rs
->remote_desc
== NULL
)
6144 reply
= (struct stop_reply
*) rns
->pending_event
[notif_client_stop
.id
];
6146 /* Discard the in-flight notification. */
6147 if (reply
!= NULL
&& ptid_get_pid (reply
->ptid
) == inf
->pid
)
6149 stop_reply_xfree (reply
);
6150 rns
->pending_event
[notif_client_stop
.id
] = NULL
;
6154 param
.output
= NULL
;
6155 /* Discard the stop replies we have already pulled with
6157 QUEUE_iterate (stop_reply_p
, stop_reply_queue
,
6158 remove_stop_reply_for_inferior
, ¶m
);
6161 /* If its remote state is equal to the given remote state,
6162 remove EVENT from the stop reply queue. */
6165 remove_stop_reply_of_remote_state (QUEUE (stop_reply_p
) *q
,
6166 QUEUE_ITER (stop_reply_p
) *iter
,
6170 struct queue_iter_param
*param
= (struct queue_iter_param
*) data
;
6171 struct remote_state
*rs
= (struct remote_state
*) param
->input
;
6173 if (event
->rs
== rs
)
6175 stop_reply_xfree (event
);
6176 QUEUE_remove_elem (stop_reply_p
, q
, iter
);
6182 /* Discard the stop replies for RS in stop_reply_queue. */
6185 discard_pending_stop_replies_in_queue (struct remote_state
*rs
)
6187 struct queue_iter_param param
;
6190 param
.output
= NULL
;
6191 /* Discard the stop replies we have already pulled with
6193 QUEUE_iterate (stop_reply_p
, stop_reply_queue
,
6194 remove_stop_reply_of_remote_state
, ¶m
);
6197 /* A parameter to pass data in and out. */
6200 remote_notif_remove_once_on_match (QUEUE (stop_reply_p
) *q
,
6201 QUEUE_ITER (stop_reply_p
) *iter
,
6205 struct queue_iter_param
*param
= (struct queue_iter_param
*) data
;
6206 ptid_t
*ptid
= (ptid_t
*) param
->input
;
6208 if (ptid_match (event
->ptid
, *ptid
))
6210 param
->output
= event
;
6211 QUEUE_remove_elem (stop_reply_p
, q
, iter
);
6218 /* Remove the first reply in 'stop_reply_queue' which matches
6221 static struct stop_reply
*
6222 remote_notif_remove_queued_reply (ptid_t ptid
)
6224 struct queue_iter_param param
;
6226 param
.input
= &ptid
;
6227 param
.output
= NULL
;
6229 QUEUE_iterate (stop_reply_p
, stop_reply_queue
,
6230 remote_notif_remove_once_on_match
, ¶m
);
6232 fprintf_unfiltered (gdb_stdlog
,
6233 "notif: discard queued event: 'Stop' in %s\n",
6234 target_pid_to_str (ptid
));
6236 return param
.output
;
6239 /* Look for a queued stop reply belonging to PTID. If one is found,
6240 remove it from the queue, and return it. Returns NULL if none is
6241 found. If there are still queued events left to process, tell the
6242 event loop to get back to target_wait soon. */
6244 static struct stop_reply
*
6245 queued_stop_reply (ptid_t ptid
)
6247 struct stop_reply
*r
= remote_notif_remove_queued_reply (ptid
);
6249 if (!QUEUE_is_empty (stop_reply_p
, stop_reply_queue
))
6250 /* There's still at least an event left. */
6251 mark_async_event_handler (remote_async_inferior_event_token
);
6256 /* Push a fully parsed stop reply in the stop reply queue. Since we
6257 know that we now have at least one queued event left to pass to the
6258 core side, tell the event loop to get back to target_wait soon. */
6261 push_stop_reply (struct stop_reply
*new_event
)
6263 QUEUE_enque (stop_reply_p
, stop_reply_queue
, new_event
);
6266 fprintf_unfiltered (gdb_stdlog
,
6267 "notif: push 'Stop' %s to queue %d\n",
6268 target_pid_to_str (new_event
->ptid
),
6269 QUEUE_length (stop_reply_p
,
6272 mark_async_event_handler (remote_async_inferior_event_token
);
6276 stop_reply_match_ptid_and_ws (QUEUE (stop_reply_p
) *q
,
6277 QUEUE_ITER (stop_reply_p
) *iter
,
6278 struct stop_reply
*event
,
6281 ptid_t
*ptid
= (ptid_t
*) data
;
6283 return !(ptid_equal (*ptid
, event
->ptid
)
6284 && event
->ws
.kind
== TARGET_WAITKIND_STOPPED
);
6287 /* Returns true if we have a stop reply for PTID. */
6290 peek_stop_reply (ptid_t ptid
)
6292 return !QUEUE_iterate (stop_reply_p
, stop_reply_queue
,
6293 stop_reply_match_ptid_and_ws
, &ptid
);
6296 /* Skip PACKET until the next semi-colon (or end of string). */
6299 skip_to_semicolon (char *p
)
6301 while (*p
!= '\0' && *p
!= ';')
6306 /* Helper for remote_parse_stop_reply. Return nonzero if the substring
6307 starting with P and ending with PEND matches PREFIX. */
6310 strprefix (const char *p
, const char *pend
, const char *prefix
)
6312 for ( ; p
< pend
; p
++, prefix
++)
6315 return *prefix
== '\0';
6318 /* Parse the stop reply in BUF. Either the function succeeds, and the
6319 result is stored in EVENT, or throws an error. */
6322 remote_parse_stop_reply (char *buf
, struct stop_reply
*event
)
6324 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6329 event
->ptid
= null_ptid
;
6330 event
->rs
= get_remote_state ();
6331 event
->ws
.kind
= TARGET_WAITKIND_IGNORE
;
6332 event
->ws
.value
.integer
= 0;
6333 event
->stop_reason
= TARGET_STOPPED_BY_NO_REASON
;
6334 event
->regcache
= NULL
;
6339 case 'T': /* Status with PC, SP, FP, ... */
6340 /* Expedited reply, containing Signal, {regno, reg} repeat. */
6341 /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where
6343 n... = register number
6344 r... = register contents
6347 p
= &buf
[3]; /* after Txx */
6353 p1
= strchr (p
, ':');
6355 error (_("Malformed packet(a) (missing colon): %s\n\
6359 error (_("Malformed packet(a) (missing register number): %s\n\
6363 /* Some "registers" are actually extended stop information.
6364 Note if you're adding a new entry here: GDB 7.9 and
6365 earlier assume that all register "numbers" that start
6366 with an hex digit are real register numbers. Make sure
6367 the server only sends such a packet if it knows the
6368 client understands it. */
6370 if (strprefix (p
, p1
, "thread"))
6371 event
->ptid
= read_ptid (++p1
, &p
);
6372 else if (strprefix (p
, p1
, "watch")
6373 || strprefix (p
, p1
, "rwatch")
6374 || strprefix (p
, p1
, "awatch"))
6376 event
->stop_reason
= TARGET_STOPPED_BY_WATCHPOINT
;
6377 p
= unpack_varlen_hex (++p1
, &addr
);
6378 event
->watch_data_address
= (CORE_ADDR
) addr
;
6380 else if (strprefix (p
, p1
, "swbreak"))
6382 event
->stop_reason
= TARGET_STOPPED_BY_SW_BREAKPOINT
;
6384 /* Make sure the stub doesn't forget to indicate support
6386 if (packet_support (PACKET_swbreak_feature
) != PACKET_ENABLE
)
6387 error (_("Unexpected swbreak stop reason"));
6389 /* The value part is documented as "must be empty",
6390 though we ignore it, in case we ever decide to make
6391 use of it in a backward compatible way. */
6392 p
= skip_to_semicolon (p1
+ 1);
6394 else if (strprefix (p
, p1
, "hwbreak"))
6396 event
->stop_reason
= TARGET_STOPPED_BY_HW_BREAKPOINT
;
6398 /* Make sure the stub doesn't forget to indicate support
6400 if (packet_support (PACKET_hwbreak_feature
) != PACKET_ENABLE
)
6401 error (_("Unexpected hwbreak stop reason"));
6404 p
= skip_to_semicolon (p1
+ 1);
6406 else if (strprefix (p
, p1
, "library"))
6408 event
->ws
.kind
= TARGET_WAITKIND_LOADED
;
6409 p
= skip_to_semicolon (p1
+ 1);
6411 else if (strprefix (p
, p1
, "replaylog"))
6413 event
->ws
.kind
= TARGET_WAITKIND_NO_HISTORY
;
6414 /* p1 will indicate "begin" or "end", but it makes
6415 no difference for now, so ignore it. */
6416 p
= skip_to_semicolon (p1
+ 1);
6418 else if (strprefix (p
, p1
, "core"))
6422 p
= unpack_varlen_hex (++p1
, &c
);
6425 else if (strprefix (p
, p1
, "fork"))
6427 event
->ws
.value
.related_pid
= read_ptid (++p1
, &p
);
6428 event
->ws
.kind
= TARGET_WAITKIND_FORKED
;
6430 else if (strprefix (p
, p1
, "vfork"))
6432 event
->ws
.value
.related_pid
= read_ptid (++p1
, &p
);
6433 event
->ws
.kind
= TARGET_WAITKIND_VFORKED
;
6435 else if (strprefix (p
, p1
, "vforkdone"))
6437 event
->ws
.kind
= TARGET_WAITKIND_VFORK_DONE
;
6438 p
= skip_to_semicolon (p1
+ 1);
6440 else if (strprefix (p
, p1
, "exec"))
6443 char pathname
[PATH_MAX
];
6446 /* Determine the length of the execd pathname. */
6447 p
= unpack_varlen_hex (++p1
, &ignored
);
6448 pathlen
= (p
- p1
) / 2;
6450 /* Save the pathname for event reporting and for
6451 the next run command. */
6452 hex2bin (p1
, (gdb_byte
*) pathname
, pathlen
);
6453 pathname
[pathlen
] = '\0';
6455 /* This is freed during event handling. */
6456 event
->ws
.value
.execd_pathname
= xstrdup (pathname
);
6457 event
->ws
.kind
= TARGET_WAITKIND_EXECD
;
6459 /* Skip the registers included in this packet, since
6460 they may be for an architecture different from the
6461 one used by the original program. */
6464 else if (strprefix (p
, p1
, "create"))
6466 event
->ws
.kind
= TARGET_WAITKIND_THREAD_CREATED
;
6467 p
= skip_to_semicolon (p1
+ 1);
6476 p
= skip_to_semicolon (p1
+ 1);
6481 /* Maybe a real ``P'' register number. */
6482 p_temp
= unpack_varlen_hex (p
, &pnum
);
6483 /* If the first invalid character is the colon, we got a
6484 register number. Otherwise, it's an unknown stop
6488 struct packet_reg
*reg
= packet_reg_from_pnum (rsa
, pnum
);
6489 cached_reg_t cached_reg
;
6492 error (_("Remote sent bad register number %s: %s\n\
6494 hex_string (pnum
), p
, buf
);
6496 cached_reg
.num
= reg
->regnum
;
6499 fieldsize
= hex2bin (p
, cached_reg
.data
,
6500 register_size (target_gdbarch (),
6503 if (fieldsize
< register_size (target_gdbarch (),
6505 warning (_("Remote reply is too short: %s"), buf
);
6507 VEC_safe_push (cached_reg_t
, event
->regcache
, &cached_reg
);
6511 /* Not a number. Silently skip unknown optional
6513 p
= skip_to_semicolon (p1
+ 1);
6518 error (_("Remote register badly formatted: %s\nhere: %s"),
6523 if (event
->ws
.kind
!= TARGET_WAITKIND_IGNORE
)
6527 case 'S': /* Old style status, just signal only. */
6531 event
->ws
.kind
= TARGET_WAITKIND_STOPPED
;
6532 sig
= (fromhex (buf
[1]) << 4) + fromhex (buf
[2]);
6533 if (GDB_SIGNAL_FIRST
<= sig
&& sig
< GDB_SIGNAL_LAST
)
6534 event
->ws
.value
.sig
= (enum gdb_signal
) sig
;
6536 event
->ws
.value
.sig
= GDB_SIGNAL_UNKNOWN
;
6539 case 'w': /* Thread exited. */
6544 event
->ws
.kind
= TARGET_WAITKIND_THREAD_EXITED
;
6545 p
= unpack_varlen_hex (&buf
[1], &value
);
6546 event
->ws
.value
.integer
= value
;
6548 error (_("stop reply packet badly formatted: %s"), buf
);
6549 event
->ptid
= read_ptid (++p
, &p
);
6552 case 'W': /* Target exited. */
6559 /* GDB used to accept only 2 hex chars here. Stubs should
6560 only send more if they detect GDB supports multi-process
6562 p
= unpack_varlen_hex (&buf
[1], &value
);
6566 /* The remote process exited. */
6567 event
->ws
.kind
= TARGET_WAITKIND_EXITED
;
6568 event
->ws
.value
.integer
= value
;
6572 /* The remote process exited with a signal. */
6573 event
->ws
.kind
= TARGET_WAITKIND_SIGNALLED
;
6574 if (GDB_SIGNAL_FIRST
<= value
&& value
< GDB_SIGNAL_LAST
)
6575 event
->ws
.value
.sig
= (enum gdb_signal
) value
;
6577 event
->ws
.value
.sig
= GDB_SIGNAL_UNKNOWN
;
6580 /* If no process is specified, assume inferior_ptid. */
6581 pid
= ptid_get_pid (inferior_ptid
);
6590 else if (startswith (p
, "process:"))
6594 p
+= sizeof ("process:") - 1;
6595 unpack_varlen_hex (p
, &upid
);
6599 error (_("unknown stop reply packet: %s"), buf
);
6602 error (_("unknown stop reply packet: %s"), buf
);
6603 event
->ptid
= pid_to_ptid (pid
);
6607 event
->ws
.kind
= TARGET_WAITKIND_NO_RESUMED
;
6608 event
->ptid
= minus_one_ptid
;
6612 if (target_is_non_stop_p () && ptid_equal (event
->ptid
, null_ptid
))
6613 error (_("No process or thread specified in stop reply: %s"), buf
);
6616 /* When the stub wants to tell GDB about a new notification reply, it
6617 sends a notification (%Stop, for example). Those can come it at
6618 any time, hence, we have to make sure that any pending
6619 putpkt/getpkt sequence we're making is finished, before querying
6620 the stub for more events with the corresponding ack command
6621 (vStopped, for example). E.g., if we started a vStopped sequence
6622 immediately upon receiving the notification, something like this
6630 1.6) <-- (registers reply to step #1.3)
6632 Obviously, the reply in step #1.6 would be unexpected to a vStopped
6635 To solve this, whenever we parse a %Stop notification successfully,
6636 we mark the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN, and carry on
6637 doing whatever we were doing:
6643 <GDB marks the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN>
6644 2.5) <-- (registers reply to step #2.3)
6646 Eventualy after step #2.5, we return to the event loop, which
6647 notices there's an event on the
6648 REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN event and calls the
6649 associated callback --- the function below. At this point, we're
6650 always safe to start a vStopped sequence. :
6653 2.7) <-- T05 thread:2
6659 remote_notif_get_pending_events (struct notif_client
*nc
)
6661 struct remote_state
*rs
= get_remote_state ();
6663 if (rs
->notif_state
->pending_event
[nc
->id
] != NULL
)
6666 fprintf_unfiltered (gdb_stdlog
,
6667 "notif: process: '%s' ack pending event\n",
6671 nc
->ack (nc
, rs
->buf
, rs
->notif_state
->pending_event
[nc
->id
]);
6672 rs
->notif_state
->pending_event
[nc
->id
] = NULL
;
6676 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6677 if (strcmp (rs
->buf
, "OK") == 0)
6680 remote_notif_ack (nc
, rs
->buf
);
6686 fprintf_unfiltered (gdb_stdlog
,
6687 "notif: process: '%s' no pending reply\n",
6692 /* Called when it is decided that STOP_REPLY holds the info of the
6693 event that is to be returned to the core. This function always
6694 destroys STOP_REPLY. */
6697 process_stop_reply (struct stop_reply
*stop_reply
,
6698 struct target_waitstatus
*status
)
6702 *status
= stop_reply
->ws
;
6703 ptid
= stop_reply
->ptid
;
6705 /* If no thread/process was reported by the stub, assume the current
6707 if (ptid_equal (ptid
, null_ptid
))
6708 ptid
= inferior_ptid
;
6710 if (status
->kind
!= TARGET_WAITKIND_EXITED
6711 && status
->kind
!= TARGET_WAITKIND_SIGNALLED
6712 && status
->kind
!= TARGET_WAITKIND_NO_RESUMED
)
6714 struct remote_state
*rs
= get_remote_state ();
6715 struct private_thread_info
*remote_thr
;
6717 /* Expedited registers. */
6718 if (stop_reply
->regcache
)
6720 struct regcache
*regcache
6721 = get_thread_arch_regcache (ptid
, target_gdbarch ());
6726 VEC_iterate(cached_reg_t
, stop_reply
->regcache
, ix
, reg
);
6728 regcache_raw_supply (regcache
, reg
->num
, reg
->data
);
6729 VEC_free (cached_reg_t
, stop_reply
->regcache
);
6732 remote_notice_new_inferior (ptid
, 0);
6733 remote_thr
= demand_private_info (ptid
);
6734 remote_thr
->core
= stop_reply
->core
;
6735 remote_thr
->stop_reason
= stop_reply
->stop_reason
;
6736 remote_thr
->watch_data_address
= stop_reply
->watch_data_address
;
6739 stop_reply_xfree (stop_reply
);
6743 /* The non-stop mode version of target_wait. */
6746 remote_wait_ns (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
6748 struct remote_state
*rs
= get_remote_state ();
6749 struct stop_reply
*stop_reply
;
6753 /* If in non-stop mode, get out of getpkt even if a
6754 notification is received. */
6756 ret
= getpkt_or_notif_sane (&rs
->buf
, &rs
->buf_size
,
6757 0 /* forever */, &is_notif
);
6760 if (ret
!= -1 && !is_notif
)
6763 case 'E': /* Error of some sort. */
6764 /* We're out of sync with the target now. Did it continue
6765 or not? We can't tell which thread it was in non-stop,
6766 so just ignore this. */
6767 warning (_("Remote failure reply: %s"), rs
->buf
);
6769 case 'O': /* Console output. */
6770 remote_console_output (rs
->buf
+ 1);
6773 warning (_("Invalid remote reply: %s"), rs
->buf
);
6777 /* Acknowledge a pending stop reply that may have arrived in the
6779 if (rs
->notif_state
->pending_event
[notif_client_stop
.id
] != NULL
)
6780 remote_notif_get_pending_events (¬if_client_stop
);
6782 /* If indeed we noticed a stop reply, we're done. */
6783 stop_reply
= queued_stop_reply (ptid
);
6784 if (stop_reply
!= NULL
)
6785 return process_stop_reply (stop_reply
, status
);
6787 /* Still no event. If we're just polling for an event, then
6788 return to the event loop. */
6789 if (options
& TARGET_WNOHANG
)
6791 status
->kind
= TARGET_WAITKIND_IGNORE
;
6792 return minus_one_ptid
;
6795 /* Otherwise do a blocking wait. */
6796 ret
= getpkt_or_notif_sane (&rs
->buf
, &rs
->buf_size
,
6797 1 /* forever */, &is_notif
);
6801 /* Wait until the remote machine stops, then return, storing status in
6802 STATUS just as `wait' would. */
6805 remote_wait_as (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
6807 struct remote_state
*rs
= get_remote_state ();
6808 ptid_t event_ptid
= null_ptid
;
6810 struct stop_reply
*stop_reply
;
6814 status
->kind
= TARGET_WAITKIND_IGNORE
;
6815 status
->value
.integer
= 0;
6817 stop_reply
= queued_stop_reply (ptid
);
6818 if (stop_reply
!= NULL
)
6819 return process_stop_reply (stop_reply
, status
);
6821 if (rs
->cached_wait_status
)
6822 /* Use the cached wait status, but only once. */
6823 rs
->cached_wait_status
= 0;
6828 int forever
= ((options
& TARGET_WNOHANG
) == 0
6829 && wait_forever_enabled_p
);
6831 if (!rs
->waiting_for_stop_reply
)
6833 status
->kind
= TARGET_WAITKIND_NO_RESUMED
;
6834 return minus_one_ptid
;
6837 if (!target_is_async_p ())
6839 ofunc
= signal (SIGINT
, sync_remote_interrupt
);
6840 /* If the user hit C-c before this packet, or between packets,
6841 pretend that it was hit right here. */
6842 if (check_quit_flag ())
6845 sync_remote_interrupt (SIGINT
);
6849 /* FIXME: cagney/1999-09-27: If we're in async mode we should
6850 _never_ wait for ever -> test on target_is_async_p().
6851 However, before we do that we need to ensure that the caller
6852 knows how to take the target into/out of async mode. */
6853 ret
= getpkt_or_notif_sane (&rs
->buf
, &rs
->buf_size
,
6854 forever
, &is_notif
);
6856 if (!target_is_async_p ())
6857 signal (SIGINT
, ofunc
);
6859 /* GDB gets a notification. Return to core as this event is
6861 if (ret
!= -1 && is_notif
)
6862 return minus_one_ptid
;
6864 if (ret
== -1 && (options
& TARGET_WNOHANG
) != 0)
6865 return minus_one_ptid
;
6870 /* Assume that the target has acknowledged Ctrl-C unless we receive
6871 an 'F' or 'O' packet. */
6872 if (buf
[0] != 'F' && buf
[0] != 'O')
6873 rs
->ctrlc_pending_p
= 0;
6877 case 'E': /* Error of some sort. */
6878 /* We're out of sync with the target now. Did it continue or
6879 not? Not is more likely, so report a stop. */
6880 rs
->waiting_for_stop_reply
= 0;
6882 warning (_("Remote failure reply: %s"), buf
);
6883 status
->kind
= TARGET_WAITKIND_STOPPED
;
6884 status
->value
.sig
= GDB_SIGNAL_0
;
6886 case 'F': /* File-I/O request. */
6887 remote_fileio_request (buf
, rs
->ctrlc_pending_p
);
6888 rs
->ctrlc_pending_p
= 0;
6890 case 'N': case 'T': case 'S': case 'X': case 'W':
6892 struct stop_reply
*stop_reply
;
6894 /* There is a stop reply to handle. */
6895 rs
->waiting_for_stop_reply
= 0;
6898 = (struct stop_reply
*) remote_notif_parse (¬if_client_stop
,
6901 event_ptid
= process_stop_reply (stop_reply
, status
);
6904 case 'O': /* Console output. */
6905 remote_console_output (buf
+ 1);
6908 if (rs
->last_sent_signal
!= GDB_SIGNAL_0
)
6910 /* Zero length reply means that we tried 'S' or 'C' and the
6911 remote system doesn't support it. */
6912 target_terminal_ours_for_output ();
6914 ("Can't send signals to this remote system. %s not sent.\n",
6915 gdb_signal_to_name (rs
->last_sent_signal
));
6916 rs
->last_sent_signal
= GDB_SIGNAL_0
;
6917 target_terminal_inferior ();
6919 strcpy ((char *) buf
, rs
->last_sent_step
? "s" : "c");
6920 putpkt ((char *) buf
);
6923 /* else fallthrough */
6925 warning (_("Invalid remote reply: %s"), buf
);
6929 if (status
->kind
== TARGET_WAITKIND_NO_RESUMED
)
6930 return minus_one_ptid
;
6931 else if (status
->kind
== TARGET_WAITKIND_IGNORE
)
6933 /* Nothing interesting happened. If we're doing a non-blocking
6934 poll, we're done. Otherwise, go back to waiting. */
6935 if (options
& TARGET_WNOHANG
)
6936 return minus_one_ptid
;
6940 else if (status
->kind
!= TARGET_WAITKIND_EXITED
6941 && status
->kind
!= TARGET_WAITKIND_SIGNALLED
)
6943 if (!ptid_equal (event_ptid
, null_ptid
))
6944 record_currthread (rs
, event_ptid
);
6946 event_ptid
= inferior_ptid
;
6949 /* A process exit. Invalidate our notion of current thread. */
6950 record_currthread (rs
, minus_one_ptid
);
6955 /* Wait until the remote machine stops, then return, storing status in
6956 STATUS just as `wait' would. */
6959 remote_wait (struct target_ops
*ops
,
6960 ptid_t ptid
, struct target_waitstatus
*status
, int options
)
6964 if (target_is_non_stop_p ())
6965 event_ptid
= remote_wait_ns (ptid
, status
, options
);
6967 event_ptid
= remote_wait_as (ptid
, status
, options
);
6969 if (target_is_async_p ())
6971 /* If there are are events left in the queue tell the event loop
6973 if (!QUEUE_is_empty (stop_reply_p
, stop_reply_queue
))
6974 mark_async_event_handler (remote_async_inferior_event_token
);
6980 /* Fetch a single register using a 'p' packet. */
6983 fetch_register_using_p (struct regcache
*regcache
, struct packet_reg
*reg
)
6985 struct remote_state
*rs
= get_remote_state ();
6987 char regp
[MAX_REGISTER_SIZE
];
6990 if (packet_support (PACKET_p
) == PACKET_DISABLE
)
6993 if (reg
->pnum
== -1)
6998 p
+= hexnumstr (p
, reg
->pnum
);
7001 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7005 switch (packet_ok (buf
, &remote_protocol_packets
[PACKET_p
]))
7009 case PACKET_UNKNOWN
:
7012 error (_("Could not fetch register \"%s\"; remote failure reply '%s'"),
7013 gdbarch_register_name (get_regcache_arch (regcache
),
7018 /* If this register is unfetchable, tell the regcache. */
7021 regcache_raw_supply (regcache
, reg
->regnum
, NULL
);
7025 /* Otherwise, parse and supply the value. */
7031 error (_("fetch_register_using_p: early buf termination"));
7033 regp
[i
++] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
7036 regcache_raw_supply (regcache
, reg
->regnum
, regp
);
7040 /* Fetch the registers included in the target's 'g' packet. */
7043 send_g_packet (void)
7045 struct remote_state
*rs
= get_remote_state ();
7048 xsnprintf (rs
->buf
, get_remote_packet_size (), "g");
7049 remote_send (&rs
->buf
, &rs
->buf_size
);
7051 /* We can get out of synch in various cases. If the first character
7052 in the buffer is not a hex character, assume that has happened
7053 and try to fetch another packet to read. */
7054 while ((rs
->buf
[0] < '0' || rs
->buf
[0] > '9')
7055 && (rs
->buf
[0] < 'A' || rs
->buf
[0] > 'F')
7056 && (rs
->buf
[0] < 'a' || rs
->buf
[0] > 'f')
7057 && rs
->buf
[0] != 'x') /* New: unavailable register value. */
7060 fprintf_unfiltered (gdb_stdlog
,
7061 "Bad register packet; fetching a new packet\n");
7062 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7065 buf_len
= strlen (rs
->buf
);
7067 /* Sanity check the received packet. */
7068 if (buf_len
% 2 != 0)
7069 error (_("Remote 'g' packet reply is of odd length: %s"), rs
->buf
);
7075 process_g_packet (struct regcache
*regcache
)
7077 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
7078 struct remote_state
*rs
= get_remote_state ();
7079 struct remote_arch_state
*rsa
= get_remote_arch_state ();
7084 buf_len
= strlen (rs
->buf
);
7086 /* Further sanity checks, with knowledge of the architecture. */
7087 if (buf_len
> 2 * rsa
->sizeof_g_packet
)
7088 error (_("Remote 'g' packet reply is too long: %s"), rs
->buf
);
7090 /* Save the size of the packet sent to us by the target. It is used
7091 as a heuristic when determining the max size of packets that the
7092 target can safely receive. */
7093 if (rsa
->actual_register_packet_size
== 0)
7094 rsa
->actual_register_packet_size
= buf_len
;
7096 /* If this is smaller than we guessed the 'g' packet would be,
7097 update our records. A 'g' reply that doesn't include a register's
7098 value implies either that the register is not available, or that
7099 the 'p' packet must be used. */
7100 if (buf_len
< 2 * rsa
->sizeof_g_packet
)
7102 rsa
->sizeof_g_packet
= buf_len
/ 2;
7104 for (i
= 0; i
< gdbarch_num_regs (gdbarch
); i
++)
7106 if (rsa
->regs
[i
].pnum
== -1)
7109 if (rsa
->regs
[i
].offset
>= rsa
->sizeof_g_packet
)
7110 rsa
->regs
[i
].in_g_packet
= 0;
7112 rsa
->regs
[i
].in_g_packet
= 1;
7116 regs
= (char *) alloca (rsa
->sizeof_g_packet
);
7118 /* Unimplemented registers read as all bits zero. */
7119 memset (regs
, 0, rsa
->sizeof_g_packet
);
7121 /* Reply describes registers byte by byte, each byte encoded as two
7122 hex characters. Suck them all up, then supply them to the
7123 register cacheing/storage mechanism. */
7126 for (i
= 0; i
< rsa
->sizeof_g_packet
; i
++)
7128 if (p
[0] == 0 || p
[1] == 0)
7129 /* This shouldn't happen - we adjusted sizeof_g_packet above. */
7130 internal_error (__FILE__
, __LINE__
,
7131 _("unexpected end of 'g' packet reply"));
7133 if (p
[0] == 'x' && p
[1] == 'x')
7134 regs
[i
] = 0; /* 'x' */
7136 regs
[i
] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
7140 for (i
= 0; i
< gdbarch_num_regs (gdbarch
); i
++)
7142 struct packet_reg
*r
= &rsa
->regs
[i
];
7146 if (r
->offset
* 2 >= strlen (rs
->buf
))
7147 /* This shouldn't happen - we adjusted in_g_packet above. */
7148 internal_error (__FILE__
, __LINE__
,
7149 _("unexpected end of 'g' packet reply"));
7150 else if (rs
->buf
[r
->offset
* 2] == 'x')
7152 gdb_assert (r
->offset
* 2 < strlen (rs
->buf
));
7153 /* The register isn't available, mark it as such (at
7154 the same time setting the value to zero). */
7155 regcache_raw_supply (regcache
, r
->regnum
, NULL
);
7158 regcache_raw_supply (regcache
, r
->regnum
,
7165 fetch_registers_using_g (struct regcache
*regcache
)
7168 process_g_packet (regcache
);
7171 /* Make the remote selected traceframe match GDB's selected
7175 set_remote_traceframe (void)
7178 struct remote_state
*rs
= get_remote_state ();
7180 if (rs
->remote_traceframe_number
== get_traceframe_number ())
7183 /* Avoid recursion, remote_trace_find calls us again. */
7184 rs
->remote_traceframe_number
= get_traceframe_number ();
7186 newnum
= target_trace_find (tfind_number
,
7187 get_traceframe_number (), 0, 0, NULL
);
7189 /* Should not happen. If it does, all bets are off. */
7190 if (newnum
!= get_traceframe_number ())
7191 warning (_("could not set remote traceframe"));
7195 remote_fetch_registers (struct target_ops
*ops
,
7196 struct regcache
*regcache
, int regnum
)
7198 struct remote_arch_state
*rsa
= get_remote_arch_state ();
7201 set_remote_traceframe ();
7202 set_general_thread (inferior_ptid
);
7206 struct packet_reg
*reg
= packet_reg_from_regnum (rsa
, regnum
);
7208 gdb_assert (reg
!= NULL
);
7210 /* If this register might be in the 'g' packet, try that first -
7211 we are likely to read more than one register. If this is the
7212 first 'g' packet, we might be overly optimistic about its
7213 contents, so fall back to 'p'. */
7214 if (reg
->in_g_packet
)
7216 fetch_registers_using_g (regcache
);
7217 if (reg
->in_g_packet
)
7221 if (fetch_register_using_p (regcache
, reg
))
7224 /* This register is not available. */
7225 regcache_raw_supply (regcache
, reg
->regnum
, NULL
);
7230 fetch_registers_using_g (regcache
);
7232 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
7233 if (!rsa
->regs
[i
].in_g_packet
)
7234 if (!fetch_register_using_p (regcache
, &rsa
->regs
[i
]))
7236 /* This register is not available. */
7237 regcache_raw_supply (regcache
, i
, NULL
);
7241 /* Prepare to store registers. Since we may send them all (using a
7242 'G' request), we have to read out the ones we don't want to change
7246 remote_prepare_to_store (struct target_ops
*self
, struct regcache
*regcache
)
7248 struct remote_arch_state
*rsa
= get_remote_arch_state ();
7250 gdb_byte buf
[MAX_REGISTER_SIZE
];
7252 /* Make sure the entire registers array is valid. */
7253 switch (packet_support (PACKET_P
))
7255 case PACKET_DISABLE
:
7256 case PACKET_SUPPORT_UNKNOWN
:
7257 /* Make sure all the necessary registers are cached. */
7258 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
7259 if (rsa
->regs
[i
].in_g_packet
)
7260 regcache_raw_read (regcache
, rsa
->regs
[i
].regnum
, buf
);
7267 /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF
7268 packet was not recognized. */
7271 store_register_using_P (const struct regcache
*regcache
,
7272 struct packet_reg
*reg
)
7274 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
7275 struct remote_state
*rs
= get_remote_state ();
7276 /* Try storing a single register. */
7277 char *buf
= rs
->buf
;
7278 gdb_byte regp
[MAX_REGISTER_SIZE
];
7281 if (packet_support (PACKET_P
) == PACKET_DISABLE
)
7284 if (reg
->pnum
== -1)
7287 xsnprintf (buf
, get_remote_packet_size (), "P%s=", phex_nz (reg
->pnum
, 0));
7288 p
= buf
+ strlen (buf
);
7289 regcache_raw_collect (regcache
, reg
->regnum
, regp
);
7290 bin2hex (regp
, p
, register_size (gdbarch
, reg
->regnum
));
7292 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7294 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_P
]))
7299 error (_("Could not write register \"%s\"; remote failure reply '%s'"),
7300 gdbarch_register_name (gdbarch
, reg
->regnum
), rs
->buf
);
7301 case PACKET_UNKNOWN
:
7304 internal_error (__FILE__
, __LINE__
, _("Bad result from packet_ok"));
7308 /* Store register REGNUM, or all registers if REGNUM == -1, from the
7309 contents of the register cache buffer. FIXME: ignores errors. */
7312 store_registers_using_G (const struct regcache
*regcache
)
7314 struct remote_state
*rs
= get_remote_state ();
7315 struct remote_arch_state
*rsa
= get_remote_arch_state ();
7319 /* Extract all the registers in the regcache copying them into a
7324 regs
= (gdb_byte
*) alloca (rsa
->sizeof_g_packet
);
7325 memset (regs
, 0, rsa
->sizeof_g_packet
);
7326 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
7328 struct packet_reg
*r
= &rsa
->regs
[i
];
7331 regcache_raw_collect (regcache
, r
->regnum
, regs
+ r
->offset
);
7335 /* Command describes registers byte by byte,
7336 each byte encoded as two hex characters. */
7339 /* remote_prepare_to_store insures that rsa->sizeof_g_packet gets
7341 bin2hex (regs
, p
, rsa
->sizeof_g_packet
);
7343 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7344 if (packet_check_result (rs
->buf
) == PACKET_ERROR
)
7345 error (_("Could not write registers; remote failure reply '%s'"),
7349 /* Store register REGNUM, or all registers if REGNUM == -1, from the contents
7350 of the register cache buffer. FIXME: ignores errors. */
7353 remote_store_registers (struct target_ops
*ops
,
7354 struct regcache
*regcache
, int regnum
)
7356 struct remote_arch_state
*rsa
= get_remote_arch_state ();
7359 set_remote_traceframe ();
7360 set_general_thread (inferior_ptid
);
7364 struct packet_reg
*reg
= packet_reg_from_regnum (rsa
, regnum
);
7366 gdb_assert (reg
!= NULL
);
7368 /* Always prefer to store registers using the 'P' packet if
7369 possible; we often change only a small number of registers.
7370 Sometimes we change a larger number; we'd need help from a
7371 higher layer to know to use 'G'. */
7372 if (store_register_using_P (regcache
, reg
))
7375 /* For now, don't complain if we have no way to write the
7376 register. GDB loses track of unavailable registers too
7377 easily. Some day, this may be an error. We don't have
7378 any way to read the register, either... */
7379 if (!reg
->in_g_packet
)
7382 store_registers_using_G (regcache
);
7386 store_registers_using_G (regcache
);
7388 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
7389 if (!rsa
->regs
[i
].in_g_packet
)
7390 if (!store_register_using_P (regcache
, &rsa
->regs
[i
]))
7391 /* See above for why we do not issue an error here. */
7396 /* Return the number of hex digits in num. */
7399 hexnumlen (ULONGEST num
)
7403 for (i
= 0; num
!= 0; i
++)
7409 /* Set BUF to the minimum number of hex digits representing NUM. */
7412 hexnumstr (char *buf
, ULONGEST num
)
7414 int len
= hexnumlen (num
);
7416 return hexnumnstr (buf
, num
, len
);
7420 /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */
7423 hexnumnstr (char *buf
, ULONGEST num
, int width
)
7429 for (i
= width
- 1; i
>= 0; i
--)
7431 buf
[i
] = "0123456789abcdef"[(num
& 0xf)];
7438 /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */
7441 remote_address_masked (CORE_ADDR addr
)
7443 unsigned int address_size
= remote_address_size
;
7445 /* If "remoteaddresssize" was not set, default to target address size. */
7447 address_size
= gdbarch_addr_bit (target_gdbarch ());
7449 if (address_size
> 0
7450 && address_size
< (sizeof (ULONGEST
) * 8))
7452 /* Only create a mask when that mask can safely be constructed
7453 in a ULONGEST variable. */
7456 mask
= (mask
<< address_size
) - 1;
7462 /* Determine whether the remote target supports binary downloading.
7463 This is accomplished by sending a no-op memory write of zero length
7464 to the target at the specified address. It does not suffice to send
7465 the whole packet, since many stubs strip the eighth bit and
7466 subsequently compute a wrong checksum, which causes real havoc with
7469 NOTE: This can still lose if the serial line is not eight-bit
7470 clean. In cases like this, the user should clear "remote
7474 check_binary_download (CORE_ADDR addr
)
7476 struct remote_state
*rs
= get_remote_state ();
7478 switch (packet_support (PACKET_X
))
7480 case PACKET_DISABLE
:
7484 case PACKET_SUPPORT_UNKNOWN
:
7490 p
+= hexnumstr (p
, (ULONGEST
) addr
);
7492 p
+= hexnumstr (p
, (ULONGEST
) 0);
7496 putpkt_binary (rs
->buf
, (int) (p
- rs
->buf
));
7497 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7499 if (rs
->buf
[0] == '\0')
7502 fprintf_unfiltered (gdb_stdlog
,
7503 "binary downloading NOT "
7504 "supported by target\n");
7505 remote_protocol_packets
[PACKET_X
].support
= PACKET_DISABLE
;
7510 fprintf_unfiltered (gdb_stdlog
,
7511 "binary downloading supported by target\n");
7512 remote_protocol_packets
[PACKET_X
].support
= PACKET_ENABLE
;
7519 /* Helper function to resize the payload in order to try to get a good
7520 alignment. We try to write an amount of data such that the next write will
7521 start on an address aligned on REMOTE_ALIGN_WRITES. */
7524 align_for_efficient_write (int todo
, CORE_ADDR memaddr
)
7526 return ((memaddr
+ todo
) & ~(REMOTE_ALIGN_WRITES
- 1)) - memaddr
;
7529 /* Write memory data directly to the remote machine.
7530 This does not inform the data cache; the data cache uses this.
7531 HEADER is the starting part of the packet.
7532 MEMADDR is the address in the remote memory space.
7533 MYADDR is the address of the buffer in our space.
7534 LEN_UNITS is the number of addressable units to write.
7535 UNIT_SIZE is the length in bytes of an addressable unit.
7536 PACKET_FORMAT should be either 'X' or 'M', and indicates if we
7537 should send data as binary ('X'), or hex-encoded ('M').
7539 The function creates packet of the form
7540 <HEADER><ADDRESS>,<LENGTH>:<DATA>
7542 where encoding of <DATA> is terminated by PACKET_FORMAT.
7544 If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma
7547 Return the transferred status, error or OK (an
7548 'enum target_xfer_status' value). Save the number of addressable units
7549 transferred in *XFERED_LEN_UNITS. Only transfer a single packet.
7551 On a platform with an addressable memory size of 2 bytes (UNIT_SIZE == 2), an
7552 exchange between gdb and the stub could look like (?? in place of the
7558 -> $M1000,3:eeeeffffeeee#??
7562 <- eeeeffffeeeedddd */
7564 static enum target_xfer_status
7565 remote_write_bytes_aux (const char *header
, CORE_ADDR memaddr
,
7566 const gdb_byte
*myaddr
, ULONGEST len_units
,
7567 int unit_size
, ULONGEST
*xfered_len_units
,
7568 char packet_format
, int use_length
)
7570 struct remote_state
*rs
= get_remote_state ();
7576 int payload_capacity_bytes
;
7577 int payload_length_bytes
;
7579 if (packet_format
!= 'X' && packet_format
!= 'M')
7580 internal_error (__FILE__
, __LINE__
,
7581 _("remote_write_bytes_aux: bad packet format"));
7584 return TARGET_XFER_EOF
;
7586 payload_capacity_bytes
= get_memory_write_packet_size ();
7588 /* The packet buffer will be large enough for the payload;
7589 get_memory_packet_size ensures this. */
7592 /* Compute the size of the actual payload by subtracting out the
7593 packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */
7595 payload_capacity_bytes
-= strlen ("$,:#NN");
7597 /* The comma won't be used. */
7598 payload_capacity_bytes
+= 1;
7599 payload_capacity_bytes
-= strlen (header
);
7600 payload_capacity_bytes
-= hexnumlen (memaddr
);
7602 /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */
7604 strcat (rs
->buf
, header
);
7605 p
= rs
->buf
+ strlen (header
);
7607 /* Compute a best guess of the number of bytes actually transfered. */
7608 if (packet_format
== 'X')
7610 /* Best guess at number of bytes that will fit. */
7611 todo_units
= min (len_units
, payload_capacity_bytes
/ unit_size
);
7613 payload_capacity_bytes
-= hexnumlen (todo_units
);
7614 todo_units
= min (todo_units
, payload_capacity_bytes
/ unit_size
);
7618 /* Number of bytes that will fit. */
7619 todo_units
= min (len_units
, (payload_capacity_bytes
/ unit_size
) / 2);
7621 payload_capacity_bytes
-= hexnumlen (todo_units
);
7622 todo_units
= min (todo_units
, (payload_capacity_bytes
/ unit_size
) / 2);
7625 if (todo_units
<= 0)
7626 internal_error (__FILE__
, __LINE__
,
7627 _("minimum packet size too small to write data"));
7629 /* If we already need another packet, then try to align the end
7630 of this packet to a useful boundary. */
7631 if (todo_units
> 2 * REMOTE_ALIGN_WRITES
&& todo_units
< len_units
)
7632 todo_units
= align_for_efficient_write (todo_units
, memaddr
);
7634 /* Append "<memaddr>". */
7635 memaddr
= remote_address_masked (memaddr
);
7636 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
7643 /* Append the length and retain its location and size. It may need to be
7644 adjusted once the packet body has been created. */
7646 plenlen
= hexnumstr (p
, (ULONGEST
) todo_units
);
7654 /* Append the packet body. */
7655 if (packet_format
== 'X')
7657 /* Binary mode. Send target system values byte by byte, in
7658 increasing byte addresses. Only escape certain critical
7660 payload_length_bytes
=
7661 remote_escape_output (myaddr
, todo_units
, unit_size
, (gdb_byte
*) p
,
7662 &units_written
, payload_capacity_bytes
);
7664 /* If not all TODO units fit, then we'll need another packet. Make
7665 a second try to keep the end of the packet aligned. Don't do
7666 this if the packet is tiny. */
7667 if (units_written
< todo_units
&& units_written
> 2 * REMOTE_ALIGN_WRITES
)
7671 new_todo_units
= align_for_efficient_write (units_written
, memaddr
);
7673 if (new_todo_units
!= units_written
)
7674 payload_length_bytes
=
7675 remote_escape_output (myaddr
, new_todo_units
, unit_size
,
7676 (gdb_byte
*) p
, &units_written
,
7677 payload_capacity_bytes
);
7680 p
+= payload_length_bytes
;
7681 if (use_length
&& units_written
< todo_units
)
7683 /* Escape chars have filled up the buffer prematurely,
7684 and we have actually sent fewer units than planned.
7685 Fix-up the length field of the packet. Use the same
7686 number of characters as before. */
7687 plen
+= hexnumnstr (plen
, (ULONGEST
) units_written
,
7689 *plen
= ':'; /* overwrite \0 from hexnumnstr() */
7694 /* Normal mode: Send target system values byte by byte, in
7695 increasing byte addresses. Each byte is encoded as a two hex
7697 p
+= 2 * bin2hex (myaddr
, p
, todo_units
* unit_size
);
7698 units_written
= todo_units
;
7701 putpkt_binary (rs
->buf
, (int) (p
- rs
->buf
));
7702 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7704 if (rs
->buf
[0] == 'E')
7705 return TARGET_XFER_E_IO
;
7707 /* Return UNITS_WRITTEN, not TODO_UNITS, in case escape chars caused us to
7708 send fewer units than we'd planned. */
7709 *xfered_len_units
= (ULONGEST
) units_written
;
7710 return TARGET_XFER_OK
;
7713 /* Write memory data directly to the remote machine.
7714 This does not inform the data cache; the data cache uses this.
7715 MEMADDR is the address in the remote memory space.
7716 MYADDR is the address of the buffer in our space.
7717 LEN is the number of bytes.
7719 Return the transferred status, error or OK (an
7720 'enum target_xfer_status' value). Save the number of bytes
7721 transferred in *XFERED_LEN. Only transfer a single packet. */
7723 static enum target_xfer_status
7724 remote_write_bytes (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ULONGEST len
,
7725 int unit_size
, ULONGEST
*xfered_len
)
7727 char *packet_format
= 0;
7729 /* Check whether the target supports binary download. */
7730 check_binary_download (memaddr
);
7732 switch (packet_support (PACKET_X
))
7735 packet_format
= "X";
7737 case PACKET_DISABLE
:
7738 packet_format
= "M";
7740 case PACKET_SUPPORT_UNKNOWN
:
7741 internal_error (__FILE__
, __LINE__
,
7742 _("remote_write_bytes: bad internal state"));
7744 internal_error (__FILE__
, __LINE__
, _("bad switch"));
7747 return remote_write_bytes_aux (packet_format
,
7748 memaddr
, myaddr
, len
, unit_size
, xfered_len
,
7749 packet_format
[0], 1);
7752 /* Read memory data directly from the remote machine.
7753 This does not use the data cache; the data cache uses this.
7754 MEMADDR is the address in the remote memory space.
7755 MYADDR is the address of the buffer in our space.
7756 LEN_UNITS is the number of addressable memory units to read..
7757 UNIT_SIZE is the length in bytes of an addressable unit.
7759 Return the transferred status, error or OK (an
7760 'enum target_xfer_status' value). Save the number of bytes
7761 transferred in *XFERED_LEN_UNITS.
7763 See the comment of remote_write_bytes_aux for an example of
7764 memory read/write exchange between gdb and the stub. */
7766 static enum target_xfer_status
7767 remote_read_bytes_1 (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ULONGEST len_units
,
7768 int unit_size
, ULONGEST
*xfered_len_units
)
7770 struct remote_state
*rs
= get_remote_state ();
7771 int buf_size_bytes
; /* Max size of packet output buffer. */
7776 buf_size_bytes
= get_memory_read_packet_size ();
7777 /* The packet buffer will be large enough for the payload;
7778 get_memory_packet_size ensures this. */
7780 /* Number of units that will fit. */
7781 todo_units
= min (len_units
, (buf_size_bytes
/ unit_size
) / 2);
7783 /* Construct "m"<memaddr>","<len>". */
7784 memaddr
= remote_address_masked (memaddr
);
7787 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
7789 p
+= hexnumstr (p
, (ULONGEST
) todo_units
);
7792 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7793 if (rs
->buf
[0] == 'E'
7794 && isxdigit (rs
->buf
[1]) && isxdigit (rs
->buf
[2])
7795 && rs
->buf
[3] == '\0')
7796 return TARGET_XFER_E_IO
;
7797 /* Reply describes memory byte by byte, each byte encoded as two hex
7800 decoded_bytes
= hex2bin (p
, myaddr
, todo_units
* unit_size
);
7801 /* Return what we have. Let higher layers handle partial reads. */
7802 *xfered_len_units
= (ULONGEST
) (decoded_bytes
/ unit_size
);
7803 return TARGET_XFER_OK
;
7806 /* Using the set of read-only target sections of remote, read live
7809 For interface/parameters/return description see target.h,
7812 static enum target_xfer_status
7813 remote_xfer_live_readonly_partial (struct target_ops
*ops
, gdb_byte
*readbuf
,
7814 ULONGEST memaddr
, ULONGEST len
,
7815 int unit_size
, ULONGEST
*xfered_len
)
7817 struct target_section
*secp
;
7818 struct target_section_table
*table
;
7820 secp
= target_section_by_addr (ops
, memaddr
);
7822 && (bfd_get_section_flags (secp
->the_bfd_section
->owner
,
7823 secp
->the_bfd_section
)
7826 struct target_section
*p
;
7827 ULONGEST memend
= memaddr
+ len
;
7829 table
= target_get_section_table (ops
);
7831 for (p
= table
->sections
; p
< table
->sections_end
; p
++)
7833 if (memaddr
>= p
->addr
)
7835 if (memend
<= p
->endaddr
)
7837 /* Entire transfer is within this section. */
7838 return remote_read_bytes_1 (memaddr
, readbuf
, len
, unit_size
,
7841 else if (memaddr
>= p
->endaddr
)
7843 /* This section ends before the transfer starts. */
7848 /* This section overlaps the transfer. Just do half. */
7849 len
= p
->endaddr
- memaddr
;
7850 return remote_read_bytes_1 (memaddr
, readbuf
, len
, unit_size
,
7857 return TARGET_XFER_EOF
;
7860 /* Similar to remote_read_bytes_1, but it reads from the remote stub
7861 first if the requested memory is unavailable in traceframe.
7862 Otherwise, fall back to remote_read_bytes_1. */
7864 static enum target_xfer_status
7865 remote_read_bytes (struct target_ops
*ops
, CORE_ADDR memaddr
,
7866 gdb_byte
*myaddr
, ULONGEST len
, int unit_size
,
7867 ULONGEST
*xfered_len
)
7870 return TARGET_XFER_EOF
;
7872 if (get_traceframe_number () != -1)
7874 VEC(mem_range_s
) *available
;
7876 /* If we fail to get the set of available memory, then the
7877 target does not support querying traceframe info, and so we
7878 attempt reading from the traceframe anyway (assuming the
7879 target implements the old QTro packet then). */
7880 if (traceframe_available_memory (&available
, memaddr
, len
))
7882 struct cleanup
*old_chain
;
7884 old_chain
= make_cleanup (VEC_cleanup(mem_range_s
), &available
);
7886 if (VEC_empty (mem_range_s
, available
)
7887 || VEC_index (mem_range_s
, available
, 0)->start
!= memaddr
)
7889 enum target_xfer_status res
;
7891 /* Don't read into the traceframe's available
7893 if (!VEC_empty (mem_range_s
, available
))
7895 LONGEST oldlen
= len
;
7897 len
= VEC_index (mem_range_s
, available
, 0)->start
- memaddr
;
7898 gdb_assert (len
<= oldlen
);
7901 do_cleanups (old_chain
);
7903 /* This goes through the topmost target again. */
7904 res
= remote_xfer_live_readonly_partial (ops
, myaddr
, memaddr
,
7905 len
, unit_size
, xfered_len
);
7906 if (res
== TARGET_XFER_OK
)
7907 return TARGET_XFER_OK
;
7910 /* No use trying further, we know some memory starting
7911 at MEMADDR isn't available. */
7913 return TARGET_XFER_UNAVAILABLE
;
7917 /* Don't try to read more than how much is available, in
7918 case the target implements the deprecated QTro packet to
7919 cater for older GDBs (the target's knowledge of read-only
7920 sections may be outdated by now). */
7921 len
= VEC_index (mem_range_s
, available
, 0)->length
;
7923 do_cleanups (old_chain
);
7927 return remote_read_bytes_1 (memaddr
, myaddr
, len
, unit_size
, xfered_len
);
7932 /* Sends a packet with content determined by the printf format string
7933 FORMAT and the remaining arguments, then gets the reply. Returns
7934 whether the packet was a success, a failure, or unknown. */
7936 static enum packet_result
remote_send_printf (const char *format
, ...)
7937 ATTRIBUTE_PRINTF (1, 2);
7939 static enum packet_result
7940 remote_send_printf (const char *format
, ...)
7942 struct remote_state
*rs
= get_remote_state ();
7943 int max_size
= get_remote_packet_size ();
7946 va_start (ap
, format
);
7949 if (vsnprintf (rs
->buf
, max_size
, format
, ap
) >= max_size
)
7950 internal_error (__FILE__
, __LINE__
, _("Too long remote packet."));
7952 if (putpkt (rs
->buf
) < 0)
7953 error (_("Communication problem with target."));
7956 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7958 return packet_check_result (rs
->buf
);
7962 restore_remote_timeout (void *p
)
7964 int value
= *(int *)p
;
7966 remote_timeout
= value
;
7969 /* Flash writing can take quite some time. We'll set
7970 effectively infinite timeout for flash operations.
7971 In future, we'll need to decide on a better approach. */
7972 static const int remote_flash_timeout
= 1000;
7975 remote_flash_erase (struct target_ops
*ops
,
7976 ULONGEST address
, LONGEST length
)
7978 int addr_size
= gdbarch_addr_bit (target_gdbarch ()) / 8;
7979 int saved_remote_timeout
= remote_timeout
;
7980 enum packet_result ret
;
7981 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
7982 &saved_remote_timeout
);
7984 remote_timeout
= remote_flash_timeout
;
7986 ret
= remote_send_printf ("vFlashErase:%s,%s",
7987 phex (address
, addr_size
),
7991 case PACKET_UNKNOWN
:
7992 error (_("Remote target does not support flash erase"));
7994 error (_("Error erasing flash with vFlashErase packet"));
7999 do_cleanups (back_to
);
8002 static enum target_xfer_status
8003 remote_flash_write (struct target_ops
*ops
, ULONGEST address
,
8004 ULONGEST length
, ULONGEST
*xfered_len
,
8005 const gdb_byte
*data
)
8007 int saved_remote_timeout
= remote_timeout
;
8008 enum target_xfer_status ret
;
8009 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
8010 &saved_remote_timeout
);
8012 remote_timeout
= remote_flash_timeout
;
8013 ret
= remote_write_bytes_aux ("vFlashWrite:", address
, data
, length
, 1,
8015 do_cleanups (back_to
);
8021 remote_flash_done (struct target_ops
*ops
)
8023 int saved_remote_timeout
= remote_timeout
;
8025 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
8026 &saved_remote_timeout
);
8028 remote_timeout
= remote_flash_timeout
;
8029 ret
= remote_send_printf ("vFlashDone");
8030 do_cleanups (back_to
);
8034 case PACKET_UNKNOWN
:
8035 error (_("Remote target does not support vFlashDone"));
8037 error (_("Error finishing flash operation"));
8044 remote_files_info (struct target_ops
*ignore
)
8046 puts_filtered ("Debugging a target over a serial line.\n");
8049 /* Stuff for dealing with the packets which are part of this protocol.
8050 See comment at top of file for details. */
8052 /* Close/unpush the remote target, and throw a TARGET_CLOSE_ERROR
8053 error to higher layers. Called when a serial error is detected.
8054 The exception message is STRING, followed by a colon and a blank,
8055 the system error message for errno at function entry and final dot
8056 for output compatibility with throw_perror_with_name. */
8059 unpush_and_perror (const char *string
)
8061 int saved_errno
= errno
;
8063 remote_unpush_target ();
8064 throw_error (TARGET_CLOSE_ERROR
, "%s: %s.", string
,
8065 safe_strerror (saved_errno
));
8068 /* Read a single character from the remote end. */
8071 readchar (int timeout
)
8074 struct remote_state
*rs
= get_remote_state ();
8076 ch
= serial_readchar (rs
->remote_desc
, timeout
);
8081 switch ((enum serial_rc
) ch
)
8084 remote_unpush_target ();
8085 throw_error (TARGET_CLOSE_ERROR
, _("Remote connection closed"));
8088 unpush_and_perror (_("Remote communication error. "
8089 "Target disconnected."));
8091 case SERIAL_TIMEOUT
:
8097 /* Wrapper for serial_write that closes the target and throws if
8101 remote_serial_write (const char *str
, int len
)
8103 struct remote_state
*rs
= get_remote_state ();
8105 if (serial_write (rs
->remote_desc
, str
, len
))
8107 unpush_and_perror (_("Remote communication error. "
8108 "Target disconnected."));
8112 /* Send the command in *BUF to the remote machine, and read the reply
8113 into *BUF. Report an error if we get an error reply. Resize
8114 *BUF using xrealloc if necessary to hold the result, and update
8118 remote_send (char **buf
,
8122 getpkt (buf
, sizeof_buf
, 0);
8124 if ((*buf
)[0] == 'E')
8125 error (_("Remote failure reply: %s"), *buf
);
8128 /* Return a pointer to an xmalloc'ed string representing an escaped
8129 version of BUF, of len N. E.g. \n is converted to \\n, \t to \\t,
8130 etc. The caller is responsible for releasing the returned
8134 escape_buffer (const char *buf
, int n
)
8136 struct cleanup
*old_chain
;
8137 struct ui_file
*stb
;
8140 stb
= mem_fileopen ();
8141 old_chain
= make_cleanup_ui_file_delete (stb
);
8143 fputstrn_unfiltered (buf
, n
, '\\', stb
);
8144 str
= ui_file_xstrdup (stb
, NULL
);
8145 do_cleanups (old_chain
);
8149 /* Display a null-terminated packet on stdout, for debugging, using C
8153 print_packet (const char *buf
)
8155 puts_filtered ("\"");
8156 fputstr_filtered (buf
, '"', gdb_stdout
);
8157 puts_filtered ("\"");
8161 putpkt (const char *buf
)
8163 return putpkt_binary (buf
, strlen (buf
));
8166 /* Send a packet to the remote machine, with error checking. The data
8167 of the packet is in BUF. The string in BUF can be at most
8168 get_remote_packet_size () - 5 to account for the $, # and checksum,
8169 and for a possible /0 if we are debugging (remote_debug) and want
8170 to print the sent packet as a string. */
8173 putpkt_binary (const char *buf
, int cnt
)
8175 struct remote_state
*rs
= get_remote_state ();
8177 unsigned char csum
= 0;
8178 char *buf2
= (char *) xmalloc (cnt
+ 6);
8179 struct cleanup
*old_chain
= make_cleanup (xfree
, buf2
);
8186 /* Catch cases like trying to read memory or listing threads while
8187 we're waiting for a stop reply. The remote server wouldn't be
8188 ready to handle this request, so we'd hang and timeout. We don't
8189 have to worry about this in synchronous mode, because in that
8190 case it's not possible to issue a command while the target is
8191 running. This is not a problem in non-stop mode, because in that
8192 case, the stub is always ready to process serial input. */
8193 if (!target_is_non_stop_p ()
8194 && target_is_async_p ()
8195 && rs
->waiting_for_stop_reply
)
8197 error (_("Cannot execute this command while the target is running.\n"
8198 "Use the \"interrupt\" command to stop the target\n"
8199 "and then try again."));
8202 /* We're sending out a new packet. Make sure we don't look at a
8203 stale cached response. */
8204 rs
->cached_wait_status
= 0;
8206 /* Copy the packet into buffer BUF2, encapsulating it
8207 and giving it a checksum. */
8212 for (i
= 0; i
< cnt
; i
++)
8218 *p
++ = tohex ((csum
>> 4) & 0xf);
8219 *p
++ = tohex (csum
& 0xf);
8221 /* Send it over and over until we get a positive ack. */
8225 int started_error_output
= 0;
8229 struct cleanup
*old_chain
;
8233 str
= escape_buffer (buf2
, p
- buf2
);
8234 old_chain
= make_cleanup (xfree
, str
);
8235 fprintf_unfiltered (gdb_stdlog
, "Sending packet: %s...", str
);
8236 gdb_flush (gdb_stdlog
);
8237 do_cleanups (old_chain
);
8239 remote_serial_write (buf2
, p
- buf2
);
8241 /* If this is a no acks version of the remote protocol, send the
8242 packet and move on. */
8246 /* Read until either a timeout occurs (-2) or '+' is read.
8247 Handle any notification that arrives in the mean time. */
8250 ch
= readchar (remote_timeout
);
8258 case SERIAL_TIMEOUT
:
8261 if (started_error_output
)
8263 putchar_unfiltered ('\n');
8264 started_error_output
= 0;
8273 fprintf_unfiltered (gdb_stdlog
, "Ack\n");
8274 do_cleanups (old_chain
);
8278 fprintf_unfiltered (gdb_stdlog
, "Nak\n");
8280 case SERIAL_TIMEOUT
:
8284 do_cleanups (old_chain
);
8287 break; /* Retransmit buffer. */
8291 fprintf_unfiltered (gdb_stdlog
,
8292 "Packet instead of Ack, ignoring it\n");
8293 /* It's probably an old response sent because an ACK
8294 was lost. Gobble up the packet and ack it so it
8295 doesn't get retransmitted when we resend this
8298 remote_serial_write ("+", 1);
8299 continue; /* Now, go look for +. */
8306 /* If we got a notification, handle it, and go back to looking
8308 /* We've found the start of a notification. Now
8309 collect the data. */
8310 val
= read_frame (&rs
->buf
, &rs
->buf_size
);
8315 struct cleanup
*old_chain
;
8318 str
= escape_buffer (rs
->buf
, val
);
8319 old_chain
= make_cleanup (xfree
, str
);
8320 fprintf_unfiltered (gdb_stdlog
,
8321 " Notification received: %s\n",
8323 do_cleanups (old_chain
);
8325 handle_notification (rs
->notif_state
, rs
->buf
);
8326 /* We're in sync now, rewait for the ack. */
8333 if (!started_error_output
)
8335 started_error_output
= 1;
8336 fprintf_unfiltered (gdb_stdlog
, "putpkt: Junk: ");
8338 fputc_unfiltered (ch
& 0177, gdb_stdlog
);
8339 fprintf_unfiltered (gdb_stdlog
, "%s", rs
->buf
);
8348 if (!started_error_output
)
8350 started_error_output
= 1;
8351 fprintf_unfiltered (gdb_stdlog
, "putpkt: Junk: ");
8353 fputc_unfiltered (ch
& 0177, gdb_stdlog
);
8357 break; /* Here to retransmit. */
8361 /* This is wrong. If doing a long backtrace, the user should be
8362 able to get out next time we call QUIT, without anything as
8363 violent as interrupt_query. If we want to provide a way out of
8364 here without getting to the next QUIT, it should be based on
8365 hitting ^C twice as in remote_wait. */
8374 do_cleanups (old_chain
);
8378 /* Come here after finding the start of a frame when we expected an
8379 ack. Do our best to discard the rest of this packet. */
8388 c
= readchar (remote_timeout
);
8391 case SERIAL_TIMEOUT
:
8392 /* Nothing we can do. */
8395 /* Discard the two bytes of checksum and stop. */
8396 c
= readchar (remote_timeout
);
8398 c
= readchar (remote_timeout
);
8401 case '*': /* Run length encoding. */
8402 /* Discard the repeat count. */
8403 c
= readchar (remote_timeout
);
8408 /* A regular character. */
8414 /* Come here after finding the start of the frame. Collect the rest
8415 into *BUF, verifying the checksum, length, and handling run-length
8416 compression. NUL terminate the buffer. If there is not enough room,
8417 expand *BUF using xrealloc.
8419 Returns -1 on error, number of characters in buffer (ignoring the
8420 trailing NULL) on success. (could be extended to return one of the
8421 SERIAL status indications). */
8424 read_frame (char **buf_p
,
8431 struct remote_state
*rs
= get_remote_state ();
8438 c
= readchar (remote_timeout
);
8441 case SERIAL_TIMEOUT
:
8443 fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog
);
8447 fputs_filtered ("Saw new packet start in middle of old one\n",
8449 return -1; /* Start a new packet, count retries. */
8452 unsigned char pktcsum
;
8458 check_0
= readchar (remote_timeout
);
8460 check_1
= readchar (remote_timeout
);
8462 if (check_0
== SERIAL_TIMEOUT
|| check_1
== SERIAL_TIMEOUT
)
8465 fputs_filtered ("Timeout in checksum, retrying\n",
8469 else if (check_0
< 0 || check_1
< 0)
8472 fputs_filtered ("Communication error in checksum\n",
8477 /* Don't recompute the checksum; with no ack packets we
8478 don't have any way to indicate a packet retransmission
8483 pktcsum
= (fromhex (check_0
) << 4) | fromhex (check_1
);
8484 if (csum
== pktcsum
)
8489 struct cleanup
*old_chain
;
8492 str
= escape_buffer (buf
, bc
);
8493 old_chain
= make_cleanup (xfree
, str
);
8494 fprintf_unfiltered (gdb_stdlog
,
8495 "Bad checksum, sentsum=0x%x, "
8496 "csum=0x%x, buf=%s\n",
8497 pktcsum
, csum
, str
);
8498 do_cleanups (old_chain
);
8500 /* Number of characters in buffer ignoring trailing
8504 case '*': /* Run length encoding. */
8509 c
= readchar (remote_timeout
);
8511 repeat
= c
- ' ' + 3; /* Compute repeat count. */
8513 /* The character before ``*'' is repeated. */
8515 if (repeat
> 0 && repeat
<= 255 && bc
> 0)
8517 if (bc
+ repeat
- 1 >= *sizeof_buf
- 1)
8519 /* Make some more room in the buffer. */
8520 *sizeof_buf
+= repeat
;
8521 *buf_p
= (char *) xrealloc (*buf_p
, *sizeof_buf
);
8525 memset (&buf
[bc
], buf
[bc
- 1], repeat
);
8531 printf_filtered (_("Invalid run length encoding: %s\n"), buf
);
8535 if (bc
>= *sizeof_buf
- 1)
8537 /* Make some more room in the buffer. */
8539 *buf_p
= (char *) xrealloc (*buf_p
, *sizeof_buf
);
8550 /* Read a packet from the remote machine, with error checking, and
8551 store it in *BUF. Resize *BUF using xrealloc if necessary to hold
8552 the result, and update *SIZEOF_BUF. If FOREVER, wait forever
8553 rather than timing out; this is used (in synchronous mode) to wait
8554 for a target that is is executing user code to stop. */
8555 /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we
8556 don't have to change all the calls to getpkt to deal with the
8557 return value, because at the moment I don't know what the right
8558 thing to do it for those. */
8566 timed_out
= getpkt_sane (buf
, sizeof_buf
, forever
);
8570 /* Read a packet from the remote machine, with error checking, and
8571 store it in *BUF. Resize *BUF using xrealloc if necessary to hold
8572 the result, and update *SIZEOF_BUF. If FOREVER, wait forever
8573 rather than timing out; this is used (in synchronous mode) to wait
8574 for a target that is is executing user code to stop. If FOREVER ==
8575 0, this function is allowed to time out gracefully and return an
8576 indication of this to the caller. Otherwise return the number of
8577 bytes read. If EXPECTING_NOTIF, consider receiving a notification
8578 enough reason to return to the caller. *IS_NOTIF is an output
8579 boolean that indicates whether *BUF holds a notification or not
8580 (a regular packet). */
8583 getpkt_or_notif_sane_1 (char **buf
, long *sizeof_buf
, int forever
,
8584 int expecting_notif
, int *is_notif
)
8586 struct remote_state
*rs
= get_remote_state ();
8592 /* We're reading a new response. Make sure we don't look at a
8593 previously cached response. */
8594 rs
->cached_wait_status
= 0;
8596 strcpy (*buf
, "timeout");
8599 timeout
= watchdog
> 0 ? watchdog
: -1;
8600 else if (expecting_notif
)
8601 timeout
= 0; /* There should already be a char in the buffer. If
8604 timeout
= remote_timeout
;
8608 /* Process any number of notifications, and then return when
8612 /* If we get a timeout or bad checksum, retry up to MAX_TRIES
8614 for (tries
= 1; tries
<= MAX_TRIES
; tries
++)
8616 /* This can loop forever if the remote side sends us
8617 characters continuously, but if it pauses, we'll get
8618 SERIAL_TIMEOUT from readchar because of timeout. Then
8619 we'll count that as a retry.
8621 Note that even when forever is set, we will only wait
8622 forever prior to the start of a packet. After that, we
8623 expect characters to arrive at a brisk pace. They should
8624 show up within remote_timeout intervals. */
8626 c
= readchar (timeout
);
8627 while (c
!= SERIAL_TIMEOUT
&& c
!= '$' && c
!= '%');
8629 if (c
== SERIAL_TIMEOUT
)
8631 if (expecting_notif
)
8632 return -1; /* Don't complain, it's normal to not get
8633 anything in this case. */
8635 if (forever
) /* Watchdog went off? Kill the target. */
8638 remote_unpush_target ();
8639 throw_error (TARGET_CLOSE_ERROR
,
8640 _("Watchdog timeout has expired. "
8641 "Target detached."));
8644 fputs_filtered ("Timed out.\n", gdb_stdlog
);
8648 /* We've found the start of a packet or notification.
8649 Now collect the data. */
8650 val
= read_frame (buf
, sizeof_buf
);
8655 remote_serial_write ("-", 1);
8658 if (tries
> MAX_TRIES
)
8660 /* We have tried hard enough, and just can't receive the
8661 packet/notification. Give up. */
8662 printf_unfiltered (_("Ignoring packet error, continuing...\n"));
8664 /* Skip the ack char if we're in no-ack mode. */
8665 if (!rs
->noack_mode
)
8666 remote_serial_write ("+", 1);
8670 /* If we got an ordinary packet, return that to our caller. */
8675 struct cleanup
*old_chain
;
8678 str
= escape_buffer (*buf
, val
);
8679 old_chain
= make_cleanup (xfree
, str
);
8680 fprintf_unfiltered (gdb_stdlog
, "Packet received: %s\n", str
);
8681 do_cleanups (old_chain
);
8684 /* Skip the ack char if we're in no-ack mode. */
8685 if (!rs
->noack_mode
)
8686 remote_serial_write ("+", 1);
8687 if (is_notif
!= NULL
)
8692 /* If we got a notification, handle it, and go back to looking
8696 gdb_assert (c
== '%');
8700 struct cleanup
*old_chain
;
8703 str
= escape_buffer (*buf
, val
);
8704 old_chain
= make_cleanup (xfree
, str
);
8705 fprintf_unfiltered (gdb_stdlog
,
8706 " Notification received: %s\n",
8708 do_cleanups (old_chain
);
8710 if (is_notif
!= NULL
)
8713 handle_notification (rs
->notif_state
, *buf
);
8715 /* Notifications require no acknowledgement. */
8717 if (expecting_notif
)
8724 getpkt_sane (char **buf
, long *sizeof_buf
, int forever
)
8726 return getpkt_or_notif_sane_1 (buf
, sizeof_buf
, forever
, 0, NULL
);
8730 getpkt_or_notif_sane (char **buf
, long *sizeof_buf
, int forever
,
8733 return getpkt_or_notif_sane_1 (buf
, sizeof_buf
, forever
, 1,
8737 /* Check whether EVENT is a fork event for the process specified
8738 by the pid passed in DATA, and if it is, kill the fork child. */
8741 kill_child_of_pending_fork (QUEUE (stop_reply_p
) *q
,
8742 QUEUE_ITER (stop_reply_p
) *iter
,
8746 struct queue_iter_param
*param
= (struct queue_iter_param
*) data
;
8747 int parent_pid
= *(int *) param
->input
;
8749 if (is_pending_fork_parent (&event
->ws
, parent_pid
, event
->ptid
))
8751 struct remote_state
*rs
= get_remote_state ();
8752 int child_pid
= ptid_get_pid (event
->ws
.value
.related_pid
);
8755 res
= remote_vkill (child_pid
, rs
);
8757 error (_("Can't kill fork child process %d"), child_pid
);
8763 /* Kill any new fork children of process PID that haven't been
8764 processed by follow_fork. */
8767 kill_new_fork_children (int pid
, struct remote_state
*rs
)
8769 struct thread_info
*thread
;
8770 struct notif_client
*notif
= ¬if_client_stop
;
8771 struct queue_iter_param param
;
8773 /* Kill the fork child threads of any threads in process PID
8774 that are stopped at a fork event. */
8775 ALL_NON_EXITED_THREADS (thread
)
8777 struct target_waitstatus
*ws
= &thread
->pending_follow
;
8779 if (is_pending_fork_parent (ws
, pid
, thread
->ptid
))
8781 struct remote_state
*rs
= get_remote_state ();
8782 int child_pid
= ptid_get_pid (ws
->value
.related_pid
);
8785 res
= remote_vkill (child_pid
, rs
);
8787 error (_("Can't kill fork child process %d"), child_pid
);
8791 /* Check for any pending fork events (not reported or processed yet)
8792 in process PID and kill those fork child threads as well. */
8793 remote_notif_get_pending_events (notif
);
8795 param
.output
= NULL
;
8796 QUEUE_iterate (stop_reply_p
, stop_reply_queue
,
8797 kill_child_of_pending_fork
, ¶m
);
8802 remote_kill (struct target_ops
*ops
)
8805 /* Catch errors so the user can quit from gdb even when we
8806 aren't on speaking terms with the remote system. */
8811 CATCH (ex
, RETURN_MASK_ERROR
)
8813 if (ex
.error
== TARGET_CLOSE_ERROR
)
8815 /* If we got an (EOF) error that caused the target
8816 to go away, then we're done, that's what we wanted.
8817 "k" is susceptible to cause a premature EOF, given
8818 that the remote server isn't actually required to
8819 reply to "k", and it can happen that it doesn't
8820 even get to reply ACK to the "k". */
8824 /* Otherwise, something went wrong. We didn't actually kill
8825 the target. Just propagate the exception, and let the
8826 user or higher layers decide what to do. */
8827 throw_exception (ex
);
8831 /* We've killed the remote end, we get to mourn it. Since this is
8832 target remote, single-process, mourning the inferior also
8833 unpushes remote_ops. */
8834 target_mourn_inferior ();
8838 remote_vkill (int pid
, struct remote_state
*rs
)
8840 if (packet_support (PACKET_vKill
) == PACKET_DISABLE
)
8843 /* Tell the remote target to detach. */
8844 xsnprintf (rs
->buf
, get_remote_packet_size (), "vKill;%x", pid
);
8846 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8848 switch (packet_ok (rs
->buf
,
8849 &remote_protocol_packets
[PACKET_vKill
]))
8855 case PACKET_UNKNOWN
:
8858 internal_error (__FILE__
, __LINE__
, _("Bad result from packet_ok"));
8863 extended_remote_kill (struct target_ops
*ops
)
8866 int pid
= ptid_get_pid (inferior_ptid
);
8867 struct remote_state
*rs
= get_remote_state ();
8869 /* If we're stopped while forking and we haven't followed yet, kill the
8870 child task. We need to do this before killing the parent task
8871 because if this is a vfork then the parent will be sleeping. */
8872 kill_new_fork_children (pid
, rs
);
8874 res
= remote_vkill (pid
, rs
);
8875 if (res
== -1 && !(rs
->extended
&& remote_multi_process_p (rs
)))
8877 /* Don't try 'k' on a multi-process aware stub -- it has no way
8878 to specify the pid. */
8882 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8883 if (rs
->buf
[0] != 'O' || rs
->buf
[0] != 'K')
8886 /* Don't wait for it to die. I'm not really sure it matters whether
8887 we do or not. For the existing stubs, kill is a noop. */
8893 error (_("Can't kill process"));
8895 target_mourn_inferior ();
8899 remote_mourn (struct target_ops
*target
)
8901 unpush_target (target
);
8903 /* remote_close takes care of doing most of the clean up. */
8904 generic_mourn_inferior ();
8908 extended_remote_mourn (struct target_ops
*target
)
8910 struct remote_state
*rs
= get_remote_state ();
8912 /* In case we got here due to an error, but we're going to stay
8914 rs
->waiting_for_stop_reply
= 0;
8916 /* If the current general thread belonged to the process we just
8917 detached from or has exited, the remote side current general
8918 thread becomes undefined. Considering a case like this:
8920 - We just got here due to a detach.
8921 - The process that we're detaching from happens to immediately
8922 report a global breakpoint being hit in non-stop mode, in the
8923 same thread we had selected before.
8924 - GDB attaches to this process again.
8925 - This event happens to be the next event we handle.
8927 GDB would consider that the current general thread didn't need to
8928 be set on the stub side (with Hg), since for all it knew,
8929 GENERAL_THREAD hadn't changed.
8931 Notice that although in all-stop mode, the remote server always
8932 sets the current thread to the thread reporting the stop event,
8933 that doesn't happen in non-stop mode; in non-stop, the stub *must
8934 not* change the current thread when reporting a breakpoint hit,
8935 due to the decoupling of event reporting and event handling.
8937 To keep things simple, we always invalidate our notion of the
8939 record_currthread (rs
, minus_one_ptid
);
8941 /* Unlike "target remote", we do not want to unpush the target; then
8942 the next time the user says "run", we won't be connected. */
8944 /* Call common code to mark the inferior as not running. */
8945 generic_mourn_inferior ();
8947 if (!have_inferiors ())
8949 if (!remote_multi_process_p (rs
))
8951 /* Check whether the target is running now - some remote stubs
8952 automatically restart after kill. */
8954 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8956 if (rs
->buf
[0] == 'S' || rs
->buf
[0] == 'T')
8958 /* Assume that the target has been restarted. Set
8959 inferior_ptid so that bits of core GDB realizes
8960 there's something here, e.g., so that the user can
8961 say "kill" again. */
8962 inferior_ptid
= magic_null_ptid
;
8969 extended_remote_supports_disable_randomization (struct target_ops
*self
)
8971 return packet_support (PACKET_QDisableRandomization
) == PACKET_ENABLE
;
8975 extended_remote_disable_randomization (int val
)
8977 struct remote_state
*rs
= get_remote_state ();
8980 xsnprintf (rs
->buf
, get_remote_packet_size (), "QDisableRandomization:%x",
8983 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
8985 error (_("Target does not support QDisableRandomization."));
8986 if (strcmp (reply
, "OK") != 0)
8987 error (_("Bogus QDisableRandomization reply from target: %s"), reply
);
8991 extended_remote_run (char *args
)
8993 struct remote_state
*rs
= get_remote_state ();
8995 const char *remote_exec_file
= get_remote_exec_file ();
8997 /* If the user has disabled vRun support, or we have detected that
8998 support is not available, do not try it. */
8999 if (packet_support (PACKET_vRun
) == PACKET_DISABLE
)
9002 strcpy (rs
->buf
, "vRun;");
9003 len
= strlen (rs
->buf
);
9005 if (strlen (remote_exec_file
) * 2 + len
>= get_remote_packet_size ())
9006 error (_("Remote file name too long for run packet"));
9007 len
+= 2 * bin2hex ((gdb_byte
*) remote_exec_file
, rs
->buf
+ len
,
9008 strlen (remote_exec_file
));
9010 gdb_assert (args
!= NULL
);
9013 struct cleanup
*back_to
;
9017 argv
= gdb_buildargv (args
);
9018 back_to
= make_cleanup_freeargv (argv
);
9019 for (i
= 0; argv
[i
] != NULL
; i
++)
9021 if (strlen (argv
[i
]) * 2 + 1 + len
>= get_remote_packet_size ())
9022 error (_("Argument list too long for run packet"));
9023 rs
->buf
[len
++] = ';';
9024 len
+= 2 * bin2hex ((gdb_byte
*) argv
[i
], rs
->buf
+ len
,
9027 do_cleanups (back_to
);
9030 rs
->buf
[len
++] = '\0';
9033 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9035 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_vRun
]))
9038 /* We have a wait response. All is well. */
9040 case PACKET_UNKNOWN
:
9043 if (remote_exec_file
[0] == '\0')
9044 error (_("Running the default executable on the remote target failed; "
9045 "try \"set remote exec-file\"?"));
9047 error (_("Running \"%s\" on the remote target failed"),
9050 gdb_assert_not_reached (_("bad switch"));
9054 /* In the extended protocol we want to be able to do things like
9055 "run" and have them basically work as expected. So we need
9056 a special create_inferior function. We support changing the
9057 executable file and the command line arguments, but not the
9061 extended_remote_create_inferior (struct target_ops
*ops
,
9062 char *exec_file
, char *args
,
9063 char **env
, int from_tty
)
9067 struct remote_state
*rs
= get_remote_state ();
9068 const char *remote_exec_file
= get_remote_exec_file ();
9070 /* If running asynchronously, register the target file descriptor
9071 with the event loop. */
9072 if (target_can_async_p ())
9075 /* Disable address space randomization if requested (and supported). */
9076 if (extended_remote_supports_disable_randomization (ops
))
9077 extended_remote_disable_randomization (disable_randomization
);
9079 /* Now restart the remote server. */
9080 run_worked
= extended_remote_run (args
) != -1;
9083 /* vRun was not supported. Fail if we need it to do what the
9085 if (remote_exec_file
[0])
9086 error (_("Remote target does not support \"set remote exec-file\""));
9088 error (_("Remote target does not support \"set args\" or run <ARGS>"));
9090 /* Fall back to "R". */
9091 extended_remote_restart ();
9094 if (!have_inferiors ())
9096 /* Clean up from the last time we ran, before we mark the target
9097 running again. This will mark breakpoints uninserted, and
9098 get_offsets may insert breakpoints. */
9099 init_thread_list ();
9100 init_wait_for_inferior ();
9103 /* vRun's success return is a stop reply. */
9104 stop_reply
= run_worked
? rs
->buf
: NULL
;
9105 add_current_inferior_and_thread (stop_reply
);
9107 /* Get updated offsets, if the stub uses qOffsets. */
9112 /* Given a location's target info BP_TGT and the packet buffer BUF, output
9113 the list of conditions (in agent expression bytecode format), if any, the
9114 target needs to evaluate. The output is placed into the packet buffer
9115 started from BUF and ended at BUF_END. */
9118 remote_add_target_side_condition (struct gdbarch
*gdbarch
,
9119 struct bp_target_info
*bp_tgt
, char *buf
,
9122 struct agent_expr
*aexpr
= NULL
;
9125 char *buf_start
= buf
;
9127 if (VEC_empty (agent_expr_p
, bp_tgt
->conditions
))
9130 buf
+= strlen (buf
);
9131 xsnprintf (buf
, buf_end
- buf
, "%s", ";");
9134 /* Send conditions to the target and free the vector. */
9136 VEC_iterate (agent_expr_p
, bp_tgt
->conditions
, ix
, aexpr
);
9139 xsnprintf (buf
, buf_end
- buf
, "X%x,", aexpr
->len
);
9140 buf
+= strlen (buf
);
9141 for (i
= 0; i
< aexpr
->len
; ++i
)
9142 buf
= pack_hex_byte (buf
, aexpr
->buf
[i
]);
9149 remote_add_target_side_commands (struct gdbarch
*gdbarch
,
9150 struct bp_target_info
*bp_tgt
, char *buf
)
9152 struct agent_expr
*aexpr
= NULL
;
9155 if (VEC_empty (agent_expr_p
, bp_tgt
->tcommands
))
9158 buf
+= strlen (buf
);
9160 sprintf (buf
, ";cmds:%x,", bp_tgt
->persist
);
9161 buf
+= strlen (buf
);
9163 /* Concatenate all the agent expressions that are commands into the
9166 VEC_iterate (agent_expr_p
, bp_tgt
->tcommands
, ix
, aexpr
);
9169 sprintf (buf
, "X%x,", aexpr
->len
);
9170 buf
+= strlen (buf
);
9171 for (i
= 0; i
< aexpr
->len
; ++i
)
9172 buf
= pack_hex_byte (buf
, aexpr
->buf
[i
]);
9177 /* Insert a breakpoint. On targets that have software breakpoint
9178 support, we ask the remote target to do the work; on targets
9179 which don't, we insert a traditional memory breakpoint. */
9182 remote_insert_breakpoint (struct target_ops
*ops
,
9183 struct gdbarch
*gdbarch
,
9184 struct bp_target_info
*bp_tgt
)
9186 /* Try the "Z" s/w breakpoint packet if it is not already disabled.
9187 If it succeeds, then set the support to PACKET_ENABLE. If it
9188 fails, and the user has explicitly requested the Z support then
9189 report an error, otherwise, mark it disabled and go on. */
9191 if (packet_support (PACKET_Z0
) != PACKET_DISABLE
)
9193 CORE_ADDR addr
= bp_tgt
->reqstd_address
;
9194 struct remote_state
*rs
;
9197 struct condition_list
*cond
= NULL
;
9199 /* Make sure the remote is pointing at the right process, if
9201 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
9202 set_general_process ();
9204 gdbarch_remote_breakpoint_from_pc (gdbarch
, &addr
, &bpsize
);
9206 rs
= get_remote_state ();
9208 endbuf
= rs
->buf
+ get_remote_packet_size ();
9213 addr
= (ULONGEST
) remote_address_masked (addr
);
9214 p
+= hexnumstr (p
, addr
);
9215 xsnprintf (p
, endbuf
- p
, ",%d", bpsize
);
9217 if (remote_supports_cond_breakpoints (ops
))
9218 remote_add_target_side_condition (gdbarch
, bp_tgt
, p
, endbuf
);
9220 if (remote_can_run_breakpoint_commands (ops
))
9221 remote_add_target_side_commands (gdbarch
, bp_tgt
, p
);
9224 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9226 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
]))
9231 bp_tgt
->placed_address
= addr
;
9232 bp_tgt
->placed_size
= bpsize
;
9234 case PACKET_UNKNOWN
:
9239 /* If this breakpoint has target-side commands but this stub doesn't
9240 support Z0 packets, throw error. */
9241 if (!VEC_empty (agent_expr_p
, bp_tgt
->tcommands
))
9242 throw_error (NOT_SUPPORTED_ERROR
, _("\
9243 Target doesn't support breakpoints that have target side commands."));
9245 return memory_insert_breakpoint (ops
, gdbarch
, bp_tgt
);
9249 remote_remove_breakpoint (struct target_ops
*ops
,
9250 struct gdbarch
*gdbarch
,
9251 struct bp_target_info
*bp_tgt
)
9253 CORE_ADDR addr
= bp_tgt
->placed_address
;
9254 struct remote_state
*rs
= get_remote_state ();
9256 if (packet_support (PACKET_Z0
) != PACKET_DISABLE
)
9259 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
9261 /* Make sure the remote is pointing at the right process, if
9263 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
9264 set_general_process ();
9270 addr
= (ULONGEST
) remote_address_masked (bp_tgt
->placed_address
);
9271 p
+= hexnumstr (p
, addr
);
9272 xsnprintf (p
, endbuf
- p
, ",%d", bp_tgt
->placed_size
);
9275 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9277 return (rs
->buf
[0] == 'E');
9280 return memory_remove_breakpoint (ops
, gdbarch
, bp_tgt
);
9283 static enum Z_packet_type
9284 watchpoint_to_Z_packet (int type
)
9289 return Z_PACKET_WRITE_WP
;
9292 return Z_PACKET_READ_WP
;
9295 return Z_PACKET_ACCESS_WP
;
9298 internal_error (__FILE__
, __LINE__
,
9299 _("hw_bp_to_z: bad watchpoint type %d"), type
);
9304 remote_insert_watchpoint (struct target_ops
*self
, CORE_ADDR addr
, int len
,
9305 enum target_hw_bp_type type
, struct expression
*cond
)
9307 struct remote_state
*rs
= get_remote_state ();
9308 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
9310 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
9312 if (packet_support (PACKET_Z0
+ packet
) == PACKET_DISABLE
)
9315 /* Make sure the remote is pointing at the right process, if
9317 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
9318 set_general_process ();
9320 xsnprintf (rs
->buf
, endbuf
- rs
->buf
, "Z%x,", packet
);
9321 p
= strchr (rs
->buf
, '\0');
9322 addr
= remote_address_masked (addr
);
9323 p
+= hexnumstr (p
, (ULONGEST
) addr
);
9324 xsnprintf (p
, endbuf
- p
, ",%x", len
);
9327 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9329 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
+ packet
]))
9333 case PACKET_UNKNOWN
:
9338 internal_error (__FILE__
, __LINE__
,
9339 _("remote_insert_watchpoint: reached end of function"));
9343 remote_watchpoint_addr_within_range (struct target_ops
*target
, CORE_ADDR addr
,
9344 CORE_ADDR start
, int length
)
9346 CORE_ADDR diff
= remote_address_masked (addr
- start
);
9348 return diff
< length
;
9353 remote_remove_watchpoint (struct target_ops
*self
, CORE_ADDR addr
, int len
,
9354 enum target_hw_bp_type type
, struct expression
*cond
)
9356 struct remote_state
*rs
= get_remote_state ();
9357 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
9359 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
9361 if (packet_support (PACKET_Z0
+ packet
) == PACKET_DISABLE
)
9364 /* Make sure the remote is pointing at the right process, if
9366 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
9367 set_general_process ();
9369 xsnprintf (rs
->buf
, endbuf
- rs
->buf
, "z%x,", packet
);
9370 p
= strchr (rs
->buf
, '\0');
9371 addr
= remote_address_masked (addr
);
9372 p
+= hexnumstr (p
, (ULONGEST
) addr
);
9373 xsnprintf (p
, endbuf
- p
, ",%x", len
);
9375 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9377 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
+ packet
]))
9380 case PACKET_UNKNOWN
:
9385 internal_error (__FILE__
, __LINE__
,
9386 _("remote_remove_watchpoint: reached end of function"));
9390 int remote_hw_watchpoint_limit
= -1;
9391 int remote_hw_watchpoint_length_limit
= -1;
9392 int remote_hw_breakpoint_limit
= -1;
9395 remote_region_ok_for_hw_watchpoint (struct target_ops
*self
,
9396 CORE_ADDR addr
, int len
)
9398 if (remote_hw_watchpoint_length_limit
== 0)
9400 else if (remote_hw_watchpoint_length_limit
< 0)
9402 else if (len
<= remote_hw_watchpoint_length_limit
)
9409 remote_check_watch_resources (struct target_ops
*self
,
9410 enum bptype type
, int cnt
, int ot
)
9412 if (type
== bp_hardware_breakpoint
)
9414 if (remote_hw_breakpoint_limit
== 0)
9416 else if (remote_hw_breakpoint_limit
< 0)
9418 else if (cnt
<= remote_hw_breakpoint_limit
)
9423 if (remote_hw_watchpoint_limit
== 0)
9425 else if (remote_hw_watchpoint_limit
< 0)
9429 else if (cnt
<= remote_hw_watchpoint_limit
)
9435 /* The to_stopped_by_sw_breakpoint method of target remote. */
9438 remote_stopped_by_sw_breakpoint (struct target_ops
*ops
)
9440 struct thread_info
*thread
= inferior_thread ();
9442 return (thread
->priv
!= NULL
9443 && thread
->priv
->stop_reason
== TARGET_STOPPED_BY_SW_BREAKPOINT
);
9446 /* The to_supports_stopped_by_sw_breakpoint method of target
9450 remote_supports_stopped_by_sw_breakpoint (struct target_ops
*ops
)
9452 struct remote_state
*rs
= get_remote_state ();
9454 return (packet_support (PACKET_swbreak_feature
) == PACKET_ENABLE
);
9457 /* The to_stopped_by_hw_breakpoint method of target remote. */
9460 remote_stopped_by_hw_breakpoint (struct target_ops
*ops
)
9462 struct thread_info
*thread
= inferior_thread ();
9464 return (thread
->priv
!= NULL
9465 && thread
->priv
->stop_reason
== TARGET_STOPPED_BY_HW_BREAKPOINT
);
9468 /* The to_supports_stopped_by_hw_breakpoint method of target
9472 remote_supports_stopped_by_hw_breakpoint (struct target_ops
*ops
)
9474 struct remote_state
*rs
= get_remote_state ();
9476 return (packet_support (PACKET_hwbreak_feature
) == PACKET_ENABLE
);
9480 remote_stopped_by_watchpoint (struct target_ops
*ops
)
9482 struct thread_info
*thread
= inferior_thread ();
9484 return (thread
->priv
!= NULL
9485 && thread
->priv
->stop_reason
== TARGET_STOPPED_BY_WATCHPOINT
);
9489 remote_stopped_data_address (struct target_ops
*target
, CORE_ADDR
*addr_p
)
9491 struct thread_info
*thread
= inferior_thread ();
9493 if (thread
->priv
!= NULL
9494 && thread
->priv
->stop_reason
== TARGET_STOPPED_BY_WATCHPOINT
)
9496 *addr_p
= thread
->priv
->watch_data_address
;
9505 remote_insert_hw_breakpoint (struct target_ops
*self
, struct gdbarch
*gdbarch
,
9506 struct bp_target_info
*bp_tgt
)
9508 CORE_ADDR addr
= bp_tgt
->reqstd_address
;
9509 struct remote_state
*rs
;
9514 /* The length field should be set to the size of a breakpoint
9515 instruction, even though we aren't inserting one ourselves. */
9517 gdbarch_remote_breakpoint_from_pc (gdbarch
, &addr
, &bpsize
);
9519 if (packet_support (PACKET_Z1
) == PACKET_DISABLE
)
9522 /* Make sure the remote is pointing at the right process, if
9524 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
9525 set_general_process ();
9527 rs
= get_remote_state ();
9529 endbuf
= rs
->buf
+ get_remote_packet_size ();
9535 addr
= remote_address_masked (addr
);
9536 p
+= hexnumstr (p
, (ULONGEST
) addr
);
9537 xsnprintf (p
, endbuf
- p
, ",%x", bpsize
);
9539 if (remote_supports_cond_breakpoints (self
))
9540 remote_add_target_side_condition (gdbarch
, bp_tgt
, p
, endbuf
);
9542 if (remote_can_run_breakpoint_commands (self
))
9543 remote_add_target_side_commands (gdbarch
, bp_tgt
, p
);
9546 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9548 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z1
]))
9551 if (rs
->buf
[1] == '.')
9553 message
= strchr (rs
->buf
+ 2, '.');
9555 error (_("Remote failure reply: %s"), message
+ 1);
9558 case PACKET_UNKNOWN
:
9561 bp_tgt
->placed_address
= addr
;
9562 bp_tgt
->placed_size
= bpsize
;
9565 internal_error (__FILE__
, __LINE__
,
9566 _("remote_insert_hw_breakpoint: reached end of function"));
9571 remote_remove_hw_breakpoint (struct target_ops
*self
, struct gdbarch
*gdbarch
,
9572 struct bp_target_info
*bp_tgt
)
9575 struct remote_state
*rs
= get_remote_state ();
9577 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
9579 if (packet_support (PACKET_Z1
) == PACKET_DISABLE
)
9582 /* Make sure the remote is pointing at the right process, if
9584 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
9585 set_general_process ();
9591 addr
= remote_address_masked (bp_tgt
->placed_address
);
9592 p
+= hexnumstr (p
, (ULONGEST
) addr
);
9593 xsnprintf (p
, endbuf
- p
, ",%x", bp_tgt
->placed_size
);
9596 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9598 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z1
]))
9601 case PACKET_UNKNOWN
:
9606 internal_error (__FILE__
, __LINE__
,
9607 _("remote_remove_hw_breakpoint: reached end of function"));
9610 /* Verify memory using the "qCRC:" request. */
9613 remote_verify_memory (struct target_ops
*ops
,
9614 const gdb_byte
*data
, CORE_ADDR lma
, ULONGEST size
)
9616 struct remote_state
*rs
= get_remote_state ();
9617 unsigned long host_crc
, target_crc
;
9620 /* It doesn't make sense to use qCRC if the remote target is
9621 connected but not running. */
9622 if (target_has_execution
&& packet_support (PACKET_qCRC
) != PACKET_DISABLE
)
9624 enum packet_result result
;
9626 /* Make sure the remote is pointing at the right process. */
9627 set_general_process ();
9629 /* FIXME: assumes lma can fit into long. */
9630 xsnprintf (rs
->buf
, get_remote_packet_size (), "qCRC:%lx,%lx",
9631 (long) lma
, (long) size
);
9634 /* Be clever; compute the host_crc before waiting for target
9636 host_crc
= xcrc32 (data
, size
, 0xffffffff);
9638 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9640 result
= packet_ok (rs
->buf
,
9641 &remote_protocol_packets
[PACKET_qCRC
]);
9642 if (result
== PACKET_ERROR
)
9644 else if (result
== PACKET_OK
)
9646 for (target_crc
= 0, tmp
= &rs
->buf
[1]; *tmp
; tmp
++)
9647 target_crc
= target_crc
* 16 + fromhex (*tmp
);
9649 return (host_crc
== target_crc
);
9653 return simple_verify_memory (ops
, data
, lma
, size
);
9656 /* compare-sections command
9658 With no arguments, compares each loadable section in the exec bfd
9659 with the same memory range on the target, and reports mismatches.
9660 Useful for verifying the image on the target against the exec file. */
9663 compare_sections_command (char *args
, int from_tty
)
9666 struct cleanup
*old_chain
;
9668 const char *sectname
;
9677 error (_("command cannot be used without an exec file"));
9679 /* Make sure the remote is pointing at the right process. */
9680 set_general_process ();
9682 if (args
!= NULL
&& strcmp (args
, "-r") == 0)
9688 for (s
= exec_bfd
->sections
; s
; s
= s
->next
)
9690 if (!(s
->flags
& SEC_LOAD
))
9691 continue; /* Skip non-loadable section. */
9693 if (read_only
&& (s
->flags
& SEC_READONLY
) == 0)
9694 continue; /* Skip writeable sections */
9696 size
= bfd_get_section_size (s
);
9698 continue; /* Skip zero-length section. */
9700 sectname
= bfd_get_section_name (exec_bfd
, s
);
9701 if (args
&& strcmp (args
, sectname
) != 0)
9702 continue; /* Not the section selected by user. */
9704 matched
= 1; /* Do this section. */
9707 sectdata
= (gdb_byte
*) xmalloc (size
);
9708 old_chain
= make_cleanup (xfree
, sectdata
);
9709 bfd_get_section_contents (exec_bfd
, s
, sectdata
, 0, size
);
9711 res
= target_verify_memory (sectdata
, lma
, size
);
9714 error (_("target memory fault, section %s, range %s -- %s"), sectname
,
9715 paddress (target_gdbarch (), lma
),
9716 paddress (target_gdbarch (), lma
+ size
));
9718 printf_filtered ("Section %s, range %s -- %s: ", sectname
,
9719 paddress (target_gdbarch (), lma
),
9720 paddress (target_gdbarch (), lma
+ size
));
9722 printf_filtered ("matched.\n");
9725 printf_filtered ("MIS-MATCHED!\n");
9729 do_cleanups (old_chain
);
9732 warning (_("One or more sections of the target image does not match\n\
9733 the loaded file\n"));
9734 if (args
&& !matched
)
9735 printf_filtered (_("No loaded section named '%s'.\n"), args
);
9738 /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET
9739 into remote target. The number of bytes written to the remote
9740 target is returned, or -1 for error. */
9742 static enum target_xfer_status
9743 remote_write_qxfer (struct target_ops
*ops
, const char *object_name
,
9744 const char *annex
, const gdb_byte
*writebuf
,
9745 ULONGEST offset
, LONGEST len
, ULONGEST
*xfered_len
,
9746 struct packet_config
*packet
)
9750 struct remote_state
*rs
= get_remote_state ();
9751 int max_size
= get_memory_write_packet_size ();
9753 if (packet
->support
== PACKET_DISABLE
)
9754 return TARGET_XFER_E_IO
;
9756 /* Insert header. */
9757 i
= snprintf (rs
->buf
, max_size
,
9758 "qXfer:%s:write:%s:%s:",
9759 object_name
, annex
? annex
: "",
9760 phex_nz (offset
, sizeof offset
));
9761 max_size
-= (i
+ 1);
9763 /* Escape as much data as fits into rs->buf. */
9764 buf_len
= remote_escape_output
9765 (writebuf
, len
, 1, (gdb_byte
*) rs
->buf
+ i
, &max_size
, max_size
);
9767 if (putpkt_binary (rs
->buf
, i
+ buf_len
) < 0
9768 || getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) < 0
9769 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
9770 return TARGET_XFER_E_IO
;
9772 unpack_varlen_hex (rs
->buf
, &n
);
9775 return TARGET_XFER_OK
;
9778 /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet.
9779 Data at OFFSET, of up to LEN bytes, is read into READBUF; the
9780 number of bytes read is returned, or 0 for EOF, or -1 for error.
9781 The number of bytes read may be less than LEN without indicating an
9782 EOF. PACKET is checked and updated to indicate whether the remote
9783 target supports this object. */
9785 static enum target_xfer_status
9786 remote_read_qxfer (struct target_ops
*ops
, const char *object_name
,
9788 gdb_byte
*readbuf
, ULONGEST offset
, LONGEST len
,
9789 ULONGEST
*xfered_len
,
9790 struct packet_config
*packet
)
9792 struct remote_state
*rs
= get_remote_state ();
9793 LONGEST i
, n
, packet_len
;
9795 if (packet
->support
== PACKET_DISABLE
)
9796 return TARGET_XFER_E_IO
;
9798 /* Check whether we've cached an end-of-object packet that matches
9800 if (rs
->finished_object
)
9802 if (strcmp (object_name
, rs
->finished_object
) == 0
9803 && strcmp (annex
? annex
: "", rs
->finished_annex
) == 0
9804 && offset
== rs
->finished_offset
)
9805 return TARGET_XFER_EOF
;
9808 /* Otherwise, we're now reading something different. Discard
9810 xfree (rs
->finished_object
);
9811 xfree (rs
->finished_annex
);
9812 rs
->finished_object
= NULL
;
9813 rs
->finished_annex
= NULL
;
9816 /* Request only enough to fit in a single packet. The actual data
9817 may not, since we don't know how much of it will need to be escaped;
9818 the target is free to respond with slightly less data. We subtract
9819 five to account for the response type and the protocol frame. */
9820 n
= min (get_remote_packet_size () - 5, len
);
9821 snprintf (rs
->buf
, get_remote_packet_size () - 4, "qXfer:%s:read:%s:%s,%s",
9822 object_name
, annex
? annex
: "",
9823 phex_nz (offset
, sizeof offset
),
9824 phex_nz (n
, sizeof n
));
9825 i
= putpkt (rs
->buf
);
9827 return TARGET_XFER_E_IO
;
9830 packet_len
= getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0);
9831 if (packet_len
< 0 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
9832 return TARGET_XFER_E_IO
;
9834 if (rs
->buf
[0] != 'l' && rs
->buf
[0] != 'm')
9835 error (_("Unknown remote qXfer reply: %s"), rs
->buf
);
9837 /* 'm' means there is (or at least might be) more data after this
9838 batch. That does not make sense unless there's at least one byte
9839 of data in this reply. */
9840 if (rs
->buf
[0] == 'm' && packet_len
== 1)
9841 error (_("Remote qXfer reply contained no data."));
9843 /* Got some data. */
9844 i
= remote_unescape_input ((gdb_byte
*) rs
->buf
+ 1,
9845 packet_len
- 1, readbuf
, n
);
9847 /* 'l' is an EOF marker, possibly including a final block of data,
9848 or possibly empty. If we have the final block of a non-empty
9849 object, record this fact to bypass a subsequent partial read. */
9850 if (rs
->buf
[0] == 'l' && offset
+ i
> 0)
9852 rs
->finished_object
= xstrdup (object_name
);
9853 rs
->finished_annex
= xstrdup (annex
? annex
: "");
9854 rs
->finished_offset
= offset
+ i
;
9858 return TARGET_XFER_EOF
;
9862 return TARGET_XFER_OK
;
9866 static enum target_xfer_status
9867 remote_xfer_partial (struct target_ops
*ops
, enum target_object object
,
9868 const char *annex
, gdb_byte
*readbuf
,
9869 const gdb_byte
*writebuf
, ULONGEST offset
, ULONGEST len
,
9870 ULONGEST
*xfered_len
)
9872 struct remote_state
*rs
;
9876 int unit_size
= gdbarch_addressable_memory_unit_size (target_gdbarch ());
9878 set_remote_traceframe ();
9879 set_general_thread (inferior_ptid
);
9881 rs
= get_remote_state ();
9883 /* Handle memory using the standard memory routines. */
9884 if (object
== TARGET_OBJECT_MEMORY
)
9886 /* If the remote target is connected but not running, we should
9887 pass this request down to a lower stratum (e.g. the executable
9889 if (!target_has_execution
)
9890 return TARGET_XFER_EOF
;
9892 if (writebuf
!= NULL
)
9893 return remote_write_bytes (offset
, writebuf
, len
, unit_size
,
9896 return remote_read_bytes (ops
, offset
, readbuf
, len
, unit_size
,
9900 /* Handle SPU memory using qxfer packets. */
9901 if (object
== TARGET_OBJECT_SPU
)
9904 return remote_read_qxfer (ops
, "spu", annex
, readbuf
, offset
, len
,
9905 xfered_len
, &remote_protocol_packets
9906 [PACKET_qXfer_spu_read
]);
9908 return remote_write_qxfer (ops
, "spu", annex
, writebuf
, offset
, len
,
9909 xfered_len
, &remote_protocol_packets
9910 [PACKET_qXfer_spu_write
]);
9913 /* Handle extra signal info using qxfer packets. */
9914 if (object
== TARGET_OBJECT_SIGNAL_INFO
)
9917 return remote_read_qxfer (ops
, "siginfo", annex
, readbuf
, offset
, len
,
9918 xfered_len
, &remote_protocol_packets
9919 [PACKET_qXfer_siginfo_read
]);
9921 return remote_write_qxfer (ops
, "siginfo", annex
,
9922 writebuf
, offset
, len
, xfered_len
,
9923 &remote_protocol_packets
9924 [PACKET_qXfer_siginfo_write
]);
9927 if (object
== TARGET_OBJECT_STATIC_TRACE_DATA
)
9930 return remote_read_qxfer (ops
, "statictrace", annex
,
9931 readbuf
, offset
, len
, xfered_len
,
9932 &remote_protocol_packets
9933 [PACKET_qXfer_statictrace_read
]);
9935 return TARGET_XFER_E_IO
;
9938 /* Only handle flash writes. */
9939 if (writebuf
!= NULL
)
9945 case TARGET_OBJECT_FLASH
:
9946 return remote_flash_write (ops
, offset
, len
, xfered_len
,
9950 return TARGET_XFER_E_IO
;
9954 /* Map pre-existing objects onto letters. DO NOT do this for new
9955 objects!!! Instead specify new query packets. */
9958 case TARGET_OBJECT_AVR
:
9962 case TARGET_OBJECT_AUXV
:
9963 gdb_assert (annex
== NULL
);
9964 return remote_read_qxfer (ops
, "auxv", annex
, readbuf
, offset
, len
,
9966 &remote_protocol_packets
[PACKET_qXfer_auxv
]);
9968 case TARGET_OBJECT_AVAILABLE_FEATURES
:
9969 return remote_read_qxfer
9970 (ops
, "features", annex
, readbuf
, offset
, len
, xfered_len
,
9971 &remote_protocol_packets
[PACKET_qXfer_features
]);
9973 case TARGET_OBJECT_LIBRARIES
:
9974 return remote_read_qxfer
9975 (ops
, "libraries", annex
, readbuf
, offset
, len
, xfered_len
,
9976 &remote_protocol_packets
[PACKET_qXfer_libraries
]);
9978 case TARGET_OBJECT_LIBRARIES_SVR4
:
9979 return remote_read_qxfer
9980 (ops
, "libraries-svr4", annex
, readbuf
, offset
, len
, xfered_len
,
9981 &remote_protocol_packets
[PACKET_qXfer_libraries_svr4
]);
9983 case TARGET_OBJECT_MEMORY_MAP
:
9984 gdb_assert (annex
== NULL
);
9985 return remote_read_qxfer (ops
, "memory-map", annex
, readbuf
, offset
, len
,
9987 &remote_protocol_packets
[PACKET_qXfer_memory_map
]);
9989 case TARGET_OBJECT_OSDATA
:
9990 /* Should only get here if we're connected. */
9991 gdb_assert (rs
->remote_desc
);
9992 return remote_read_qxfer
9993 (ops
, "osdata", annex
, readbuf
, offset
, len
, xfered_len
,
9994 &remote_protocol_packets
[PACKET_qXfer_osdata
]);
9996 case TARGET_OBJECT_THREADS
:
9997 gdb_assert (annex
== NULL
);
9998 return remote_read_qxfer (ops
, "threads", annex
, readbuf
, offset
, len
,
10000 &remote_protocol_packets
[PACKET_qXfer_threads
]);
10002 case TARGET_OBJECT_TRACEFRAME_INFO
:
10003 gdb_assert (annex
== NULL
);
10004 return remote_read_qxfer
10005 (ops
, "traceframe-info", annex
, readbuf
, offset
, len
, xfered_len
,
10006 &remote_protocol_packets
[PACKET_qXfer_traceframe_info
]);
10008 case TARGET_OBJECT_FDPIC
:
10009 return remote_read_qxfer (ops
, "fdpic", annex
, readbuf
, offset
, len
,
10011 &remote_protocol_packets
[PACKET_qXfer_fdpic
]);
10013 case TARGET_OBJECT_OPENVMS_UIB
:
10014 return remote_read_qxfer (ops
, "uib", annex
, readbuf
, offset
, len
,
10016 &remote_protocol_packets
[PACKET_qXfer_uib
]);
10018 case TARGET_OBJECT_BTRACE
:
10019 return remote_read_qxfer (ops
, "btrace", annex
, readbuf
, offset
, len
,
10021 &remote_protocol_packets
[PACKET_qXfer_btrace
]);
10023 case TARGET_OBJECT_BTRACE_CONF
:
10024 return remote_read_qxfer (ops
, "btrace-conf", annex
, readbuf
, offset
,
10026 &remote_protocol_packets
[PACKET_qXfer_btrace_conf
]);
10028 case TARGET_OBJECT_EXEC_FILE
:
10029 return remote_read_qxfer (ops
, "exec-file", annex
, readbuf
, offset
,
10031 &remote_protocol_packets
[PACKET_qXfer_exec_file
]);
10034 return TARGET_XFER_E_IO
;
10037 /* Minimum outbuf size is get_remote_packet_size (). If LEN is not
10038 large enough let the caller deal with it. */
10039 if (len
< get_remote_packet_size ())
10040 return TARGET_XFER_E_IO
;
10041 len
= get_remote_packet_size ();
10043 /* Except for querying the minimum buffer size, target must be open. */
10044 if (!rs
->remote_desc
)
10045 error (_("remote query is only available after target open"));
10047 gdb_assert (annex
!= NULL
);
10048 gdb_assert (readbuf
!= NULL
);
10052 *p2
++ = query_type
;
10054 /* We used one buffer char for the remote protocol q command and
10055 another for the query type. As the remote protocol encapsulation
10056 uses 4 chars plus one extra in case we are debugging
10057 (remote_debug), we have PBUFZIZ - 7 left to pack the query
10060 while (annex
[i
] && (i
< (get_remote_packet_size () - 8)))
10062 /* Bad caller may have sent forbidden characters. */
10063 gdb_assert (isprint (annex
[i
]) && annex
[i
] != '$' && annex
[i
] != '#');
10068 gdb_assert (annex
[i
] == '\0');
10070 i
= putpkt (rs
->buf
);
10072 return TARGET_XFER_E_IO
;
10074 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
10075 strcpy ((char *) readbuf
, rs
->buf
);
10077 *xfered_len
= strlen ((char *) readbuf
);
10078 return TARGET_XFER_OK
;
10082 remote_search_memory (struct target_ops
* ops
,
10083 CORE_ADDR start_addr
, ULONGEST search_space_len
,
10084 const gdb_byte
*pattern
, ULONGEST pattern_len
,
10085 CORE_ADDR
*found_addrp
)
10087 int addr_size
= gdbarch_addr_bit (target_gdbarch ()) / 8;
10088 struct remote_state
*rs
= get_remote_state ();
10089 int max_size
= get_memory_write_packet_size ();
10090 struct packet_config
*packet
=
10091 &remote_protocol_packets
[PACKET_qSearch_memory
];
10092 /* Number of packet bytes used to encode the pattern;
10093 this could be more than PATTERN_LEN due to escape characters. */
10094 int escaped_pattern_len
;
10095 /* Amount of pattern that was encodable in the packet. */
10096 int used_pattern_len
;
10099 ULONGEST found_addr
;
10101 /* Don't go to the target if we don't have to.
10102 This is done before checking packet->support to avoid the possibility that
10103 a success for this edge case means the facility works in general. */
10104 if (pattern_len
> search_space_len
)
10106 if (pattern_len
== 0)
10108 *found_addrp
= start_addr
;
10112 /* If we already know the packet isn't supported, fall back to the simple
10113 way of searching memory. */
10115 if (packet_config_support (packet
) == PACKET_DISABLE
)
10117 /* Target doesn't provided special support, fall back and use the
10118 standard support (copy memory and do the search here). */
10119 return simple_search_memory (ops
, start_addr
, search_space_len
,
10120 pattern
, pattern_len
, found_addrp
);
10123 /* Make sure the remote is pointing at the right process. */
10124 set_general_process ();
10126 /* Insert header. */
10127 i
= snprintf (rs
->buf
, max_size
,
10128 "qSearch:memory:%s;%s;",
10129 phex_nz (start_addr
, addr_size
),
10130 phex_nz (search_space_len
, sizeof (search_space_len
)));
10131 max_size
-= (i
+ 1);
10133 /* Escape as much data as fits into rs->buf. */
10134 escaped_pattern_len
=
10135 remote_escape_output (pattern
, pattern_len
, 1, (gdb_byte
*) rs
->buf
+ i
,
10136 &used_pattern_len
, max_size
);
10138 /* Bail if the pattern is too large. */
10139 if (used_pattern_len
!= pattern_len
)
10140 error (_("Pattern is too large to transmit to remote target."));
10142 if (putpkt_binary (rs
->buf
, i
+ escaped_pattern_len
) < 0
10143 || getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) < 0
10144 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
10146 /* The request may not have worked because the command is not
10147 supported. If so, fall back to the simple way. */
10148 if (packet
->support
== PACKET_DISABLE
)
10150 return simple_search_memory (ops
, start_addr
, search_space_len
,
10151 pattern
, pattern_len
, found_addrp
);
10156 if (rs
->buf
[0] == '0')
10158 else if (rs
->buf
[0] == '1')
10161 if (rs
->buf
[1] != ',')
10162 error (_("Unknown qSearch:memory reply: %s"), rs
->buf
);
10163 unpack_varlen_hex (rs
->buf
+ 2, &found_addr
);
10164 *found_addrp
= found_addr
;
10167 error (_("Unknown qSearch:memory reply: %s"), rs
->buf
);
10173 remote_rcmd (struct target_ops
*self
, const char *command
,
10174 struct ui_file
*outbuf
)
10176 struct remote_state
*rs
= get_remote_state ();
10179 if (!rs
->remote_desc
)
10180 error (_("remote rcmd is only available after target open"));
10182 /* Send a NULL command across as an empty command. */
10183 if (command
== NULL
)
10186 /* The query prefix. */
10187 strcpy (rs
->buf
, "qRcmd,");
10188 p
= strchr (rs
->buf
, '\0');
10190 if ((strlen (rs
->buf
) + strlen (command
) * 2 + 8/*misc*/)
10191 > get_remote_packet_size ())
10192 error (_("\"monitor\" command ``%s'' is too long."), command
);
10194 /* Encode the actual command. */
10195 bin2hex ((const gdb_byte
*) command
, p
, strlen (command
));
10197 if (putpkt (rs
->buf
) < 0)
10198 error (_("Communication problem with target."));
10200 /* get/display the response */
10205 /* XXX - see also remote_get_noisy_reply(). */
10206 QUIT
; /* Allow user to bail out with ^C. */
10208 if (getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) == -1)
10210 /* Timeout. Continue to (try to) read responses.
10211 This is better than stopping with an error, assuming the stub
10212 is still executing the (long) monitor command.
10213 If needed, the user can interrupt gdb using C-c, obtaining
10214 an effect similar to stop on timeout. */
10218 if (buf
[0] == '\0')
10219 error (_("Target does not support this command."));
10220 if (buf
[0] == 'O' && buf
[1] != 'K')
10222 remote_console_output (buf
+ 1); /* 'O' message from stub. */
10225 if (strcmp (buf
, "OK") == 0)
10227 if (strlen (buf
) == 3 && buf
[0] == 'E'
10228 && isdigit (buf
[1]) && isdigit (buf
[2]))
10230 error (_("Protocol error with Rcmd"));
10232 for (p
= buf
; p
[0] != '\0' && p
[1] != '\0'; p
+= 2)
10234 char c
= (fromhex (p
[0]) << 4) + fromhex (p
[1]);
10236 fputc_unfiltered (c
, outbuf
);
10242 static VEC(mem_region_s
) *
10243 remote_memory_map (struct target_ops
*ops
)
10245 VEC(mem_region_s
) *result
= NULL
;
10246 char *text
= target_read_stralloc (¤t_target
,
10247 TARGET_OBJECT_MEMORY_MAP
, NULL
);
10251 struct cleanup
*back_to
= make_cleanup (xfree
, text
);
10253 result
= parse_memory_map (text
);
10254 do_cleanups (back_to
);
10261 packet_command (char *args
, int from_tty
)
10263 struct remote_state
*rs
= get_remote_state ();
10265 if (!rs
->remote_desc
)
10266 error (_("command can only be used with remote target"));
10269 error (_("remote-packet command requires packet text as argument"));
10271 puts_filtered ("sending: ");
10272 print_packet (args
);
10273 puts_filtered ("\n");
10276 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
10277 puts_filtered ("received: ");
10278 print_packet (rs
->buf
);
10279 puts_filtered ("\n");
10283 /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */
10285 static void display_thread_info (struct gdb_ext_thread_info
*info
);
10287 static void threadset_test_cmd (char *cmd
, int tty
);
10289 static void threadalive_test (char *cmd
, int tty
);
10291 static void threadlist_test_cmd (char *cmd
, int tty
);
10293 int get_and_display_threadinfo (threadref
*ref
);
10295 static void threadinfo_test_cmd (char *cmd
, int tty
);
10297 static int thread_display_step (threadref
*ref
, void *context
);
10299 static void threadlist_update_test_cmd (char *cmd
, int tty
);
10301 static void init_remote_threadtests (void);
10303 #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */
10306 threadset_test_cmd (char *cmd
, int tty
)
10308 int sample_thread
= SAMPLE_THREAD
;
10310 printf_filtered (_("Remote threadset test\n"));
10311 set_general_thread (sample_thread
);
10316 threadalive_test (char *cmd
, int tty
)
10318 int sample_thread
= SAMPLE_THREAD
;
10319 int pid
= ptid_get_pid (inferior_ptid
);
10320 ptid_t ptid
= ptid_build (pid
, sample_thread
, 0);
10322 if (remote_thread_alive (ptid
))
10323 printf_filtered ("PASS: Thread alive test\n");
10325 printf_filtered ("FAIL: Thread alive test\n");
10328 void output_threadid (char *title
, threadref
*ref
);
10331 output_threadid (char *title
, threadref
*ref
)
10335 pack_threadid (&hexid
[0], ref
); /* Convert threead id into hex. */
10337 printf_filtered ("%s %s\n", title
, (&hexid
[0]));
10341 threadlist_test_cmd (char *cmd
, int tty
)
10344 threadref nextthread
;
10345 int done
, result_count
;
10346 threadref threadlist
[3];
10348 printf_filtered ("Remote Threadlist test\n");
10349 if (!remote_get_threadlist (startflag
, &nextthread
, 3, &done
,
10350 &result_count
, &threadlist
[0]))
10351 printf_filtered ("FAIL: threadlist test\n");
10354 threadref
*scan
= threadlist
;
10355 threadref
*limit
= scan
+ result_count
;
10357 while (scan
< limit
)
10358 output_threadid (" thread ", scan
++);
10363 display_thread_info (struct gdb_ext_thread_info
*info
)
10365 output_threadid ("Threadid: ", &info
->threadid
);
10366 printf_filtered ("Name: %s\n ", info
->shortname
);
10367 printf_filtered ("State: %s\n", info
->display
);
10368 printf_filtered ("other: %s\n\n", info
->more_display
);
10372 get_and_display_threadinfo (threadref
*ref
)
10376 struct gdb_ext_thread_info threadinfo
;
10378 set
= TAG_THREADID
| TAG_EXISTS
| TAG_THREADNAME
10379 | TAG_MOREDISPLAY
| TAG_DISPLAY
;
10380 if (0 != (result
= remote_get_threadinfo (ref
, set
, &threadinfo
)))
10381 display_thread_info (&threadinfo
);
10386 threadinfo_test_cmd (char *cmd
, int tty
)
10388 int athread
= SAMPLE_THREAD
;
10392 int_to_threadref (&thread
, athread
);
10393 printf_filtered ("Remote Threadinfo test\n");
10394 if (!get_and_display_threadinfo (&thread
))
10395 printf_filtered ("FAIL cannot get thread info\n");
10399 thread_display_step (threadref
*ref
, void *context
)
10401 /* output_threadid(" threadstep ",ref); *//* simple test */
10402 return get_and_display_threadinfo (ref
);
10406 threadlist_update_test_cmd (char *cmd
, int tty
)
10408 printf_filtered ("Remote Threadlist update test\n");
10409 remote_threadlist_iterator (thread_display_step
, 0, CRAZY_MAX_THREADS
);
10413 init_remote_threadtests (void)
10415 add_com ("tlist", class_obscure
, threadlist_test_cmd
,
10416 _("Fetch and print the remote list of "
10417 "thread identifiers, one pkt only"));
10418 add_com ("tinfo", class_obscure
, threadinfo_test_cmd
,
10419 _("Fetch and display info about one thread"));
10420 add_com ("tset", class_obscure
, threadset_test_cmd
,
10421 _("Test setting to a different thread"));
10422 add_com ("tupd", class_obscure
, threadlist_update_test_cmd
,
10423 _("Iterate through updating all remote thread info"));
10424 add_com ("talive", class_obscure
, threadalive_test
,
10425 _(" Remote thread alive test "));
10430 /* Convert a thread ID to a string. Returns the string in a static
10434 remote_pid_to_str (struct target_ops
*ops
, ptid_t ptid
)
10436 static char buf
[64];
10437 struct remote_state
*rs
= get_remote_state ();
10439 if (ptid_equal (ptid
, null_ptid
))
10440 return normal_pid_to_str (ptid
);
10441 else if (ptid_is_pid (ptid
))
10443 /* Printing an inferior target id. */
10445 /* When multi-process extensions are off, there's no way in the
10446 remote protocol to know the remote process id, if there's any
10447 at all. There's one exception --- when we're connected with
10448 target extended-remote, and we manually attached to a process
10449 with "attach PID". We don't record anywhere a flag that
10450 allows us to distinguish that case from the case of
10451 connecting with extended-remote and the stub already being
10452 attached to a process, and reporting yes to qAttached, hence
10453 no smart special casing here. */
10454 if (!remote_multi_process_p (rs
))
10456 xsnprintf (buf
, sizeof buf
, "Remote target");
10460 return normal_pid_to_str (ptid
);
10464 if (ptid_equal (magic_null_ptid
, ptid
))
10465 xsnprintf (buf
, sizeof buf
, "Thread <main>");
10466 else if (rs
->extended
&& remote_multi_process_p (rs
))
10467 if (ptid_get_lwp (ptid
) == 0)
10468 return normal_pid_to_str (ptid
);
10470 xsnprintf (buf
, sizeof buf
, "Thread %d.%ld",
10471 ptid_get_pid (ptid
), ptid_get_lwp (ptid
));
10473 xsnprintf (buf
, sizeof buf
, "Thread %ld",
10474 ptid_get_lwp (ptid
));
10479 /* Get the address of the thread local variable in OBJFILE which is
10480 stored at OFFSET within the thread local storage for thread PTID. */
10483 remote_get_thread_local_address (struct target_ops
*ops
,
10484 ptid_t ptid
, CORE_ADDR lm
, CORE_ADDR offset
)
10486 if (packet_support (PACKET_qGetTLSAddr
) != PACKET_DISABLE
)
10488 struct remote_state
*rs
= get_remote_state ();
10490 char *endp
= rs
->buf
+ get_remote_packet_size ();
10491 enum packet_result result
;
10493 strcpy (p
, "qGetTLSAddr:");
10495 p
= write_ptid (p
, endp
, ptid
);
10497 p
+= hexnumstr (p
, offset
);
10499 p
+= hexnumstr (p
, lm
);
10503 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
10504 result
= packet_ok (rs
->buf
,
10505 &remote_protocol_packets
[PACKET_qGetTLSAddr
]);
10506 if (result
== PACKET_OK
)
10510 unpack_varlen_hex (rs
->buf
, &result
);
10513 else if (result
== PACKET_UNKNOWN
)
10514 throw_error (TLS_GENERIC_ERROR
,
10515 _("Remote target doesn't support qGetTLSAddr packet"));
10517 throw_error (TLS_GENERIC_ERROR
,
10518 _("Remote target failed to process qGetTLSAddr request"));
10521 throw_error (TLS_GENERIC_ERROR
,
10522 _("TLS not supported or disabled on this target"));
10527 /* Provide thread local base, i.e. Thread Information Block address.
10528 Returns 1 if ptid is found and thread_local_base is non zero. */
10531 remote_get_tib_address (struct target_ops
*self
, ptid_t ptid
, CORE_ADDR
*addr
)
10533 if (packet_support (PACKET_qGetTIBAddr
) != PACKET_DISABLE
)
10535 struct remote_state
*rs
= get_remote_state ();
10537 char *endp
= rs
->buf
+ get_remote_packet_size ();
10538 enum packet_result result
;
10540 strcpy (p
, "qGetTIBAddr:");
10542 p
= write_ptid (p
, endp
, ptid
);
10546 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
10547 result
= packet_ok (rs
->buf
,
10548 &remote_protocol_packets
[PACKET_qGetTIBAddr
]);
10549 if (result
== PACKET_OK
)
10553 unpack_varlen_hex (rs
->buf
, &result
);
10555 *addr
= (CORE_ADDR
) result
;
10558 else if (result
== PACKET_UNKNOWN
)
10559 error (_("Remote target doesn't support qGetTIBAddr packet"));
10561 error (_("Remote target failed to process qGetTIBAddr request"));
10564 error (_("qGetTIBAddr not supported or disabled on this target"));
10569 /* Support for inferring a target description based on the current
10570 architecture and the size of a 'g' packet. While the 'g' packet
10571 can have any size (since optional registers can be left off the
10572 end), some sizes are easily recognizable given knowledge of the
10573 approximate architecture. */
10575 struct remote_g_packet_guess
10578 const struct target_desc
*tdesc
;
10580 typedef struct remote_g_packet_guess remote_g_packet_guess_s
;
10581 DEF_VEC_O(remote_g_packet_guess_s
);
10583 struct remote_g_packet_data
10585 VEC(remote_g_packet_guess_s
) *guesses
;
10588 static struct gdbarch_data
*remote_g_packet_data_handle
;
10591 remote_g_packet_data_init (struct obstack
*obstack
)
10593 return OBSTACK_ZALLOC (obstack
, struct remote_g_packet_data
);
10597 register_remote_g_packet_guess (struct gdbarch
*gdbarch
, int bytes
,
10598 const struct target_desc
*tdesc
)
10600 struct remote_g_packet_data
*data
10601 = ((struct remote_g_packet_data
*)
10602 gdbarch_data (gdbarch
, remote_g_packet_data_handle
));
10603 struct remote_g_packet_guess new_guess
, *guess
;
10606 gdb_assert (tdesc
!= NULL
);
10609 VEC_iterate (remote_g_packet_guess_s
, data
->guesses
, ix
, guess
);
10611 if (guess
->bytes
== bytes
)
10612 internal_error (__FILE__
, __LINE__
,
10613 _("Duplicate g packet description added for size %d"),
10616 new_guess
.bytes
= bytes
;
10617 new_guess
.tdesc
= tdesc
;
10618 VEC_safe_push (remote_g_packet_guess_s
, data
->guesses
, &new_guess
);
10621 /* Return 1 if remote_read_description would do anything on this target
10622 and architecture, 0 otherwise. */
10625 remote_read_description_p (struct target_ops
*target
)
10627 struct remote_g_packet_data
*data
10628 = ((struct remote_g_packet_data
*)
10629 gdbarch_data (target_gdbarch (), remote_g_packet_data_handle
));
10631 if (!VEC_empty (remote_g_packet_guess_s
, data
->guesses
))
10637 static const struct target_desc
*
10638 remote_read_description (struct target_ops
*target
)
10640 struct remote_g_packet_data
*data
10641 = ((struct remote_g_packet_data
*)
10642 gdbarch_data (target_gdbarch (), remote_g_packet_data_handle
));
10644 /* Do not try this during initial connection, when we do not know
10645 whether there is a running but stopped thread. */
10646 if (!target_has_execution
|| ptid_equal (inferior_ptid
, null_ptid
))
10647 return target
->beneath
->to_read_description (target
->beneath
);
10649 if (!VEC_empty (remote_g_packet_guess_s
, data
->guesses
))
10651 struct remote_g_packet_guess
*guess
;
10653 int bytes
= send_g_packet ();
10656 VEC_iterate (remote_g_packet_guess_s
, data
->guesses
, ix
, guess
);
10658 if (guess
->bytes
== bytes
)
10659 return guess
->tdesc
;
10661 /* We discard the g packet. A minor optimization would be to
10662 hold on to it, and fill the register cache once we have selected
10663 an architecture, but it's too tricky to do safely. */
10666 return target
->beneath
->to_read_description (target
->beneath
);
10669 /* Remote file transfer support. This is host-initiated I/O, not
10670 target-initiated; for target-initiated, see remote-fileio.c. */
10672 /* If *LEFT is at least the length of STRING, copy STRING to
10673 *BUFFER, update *BUFFER to point to the new end of the buffer, and
10674 decrease *LEFT. Otherwise raise an error. */
10677 remote_buffer_add_string (char **buffer
, int *left
, char *string
)
10679 int len
= strlen (string
);
10682 error (_("Packet too long for target."));
10684 memcpy (*buffer
, string
, len
);
10688 /* NUL-terminate the buffer as a convenience, if there is
10694 /* If *LEFT is large enough, hex encode LEN bytes from BYTES into
10695 *BUFFER, update *BUFFER to point to the new end of the buffer, and
10696 decrease *LEFT. Otherwise raise an error. */
10699 remote_buffer_add_bytes (char **buffer
, int *left
, const gdb_byte
*bytes
,
10702 if (2 * len
> *left
)
10703 error (_("Packet too long for target."));
10705 bin2hex (bytes
, *buffer
, len
);
10706 *buffer
+= 2 * len
;
10709 /* NUL-terminate the buffer as a convenience, if there is
10715 /* If *LEFT is large enough, convert VALUE to hex and add it to
10716 *BUFFER, update *BUFFER to point to the new end of the buffer, and
10717 decrease *LEFT. Otherwise raise an error. */
10720 remote_buffer_add_int (char **buffer
, int *left
, ULONGEST value
)
10722 int len
= hexnumlen (value
);
10725 error (_("Packet too long for target."));
10727 hexnumstr (*buffer
, value
);
10731 /* NUL-terminate the buffer as a convenience, if there is
10737 /* Parse an I/O result packet from BUFFER. Set RETCODE to the return
10738 value, *REMOTE_ERRNO to the remote error number or zero if none
10739 was included, and *ATTACHMENT to point to the start of the annex
10740 if any. The length of the packet isn't needed here; there may
10741 be NUL bytes in BUFFER, but they will be after *ATTACHMENT.
10743 Return 0 if the packet could be parsed, -1 if it could not. If
10744 -1 is returned, the other variables may not be initialized. */
10747 remote_hostio_parse_result (char *buffer
, int *retcode
,
10748 int *remote_errno
, char **attachment
)
10753 *attachment
= NULL
;
10755 if (buffer
[0] != 'F')
10759 *retcode
= strtol (&buffer
[1], &p
, 16);
10760 if (errno
!= 0 || p
== &buffer
[1])
10763 /* Check for ",errno". */
10767 *remote_errno
= strtol (p
+ 1, &p2
, 16);
10768 if (errno
!= 0 || p
+ 1 == p2
)
10773 /* Check for ";attachment". If there is no attachment, the
10774 packet should end here. */
10777 *attachment
= p
+ 1;
10780 else if (*p
== '\0')
10786 /* Send a prepared I/O packet to the target and read its response.
10787 The prepared packet is in the global RS->BUF before this function
10788 is called, and the answer is there when we return.
10790 COMMAND_BYTES is the length of the request to send, which may include
10791 binary data. WHICH_PACKET is the packet configuration to check
10792 before attempting a packet. If an error occurs, *REMOTE_ERRNO
10793 is set to the error number and -1 is returned. Otherwise the value
10794 returned by the function is returned.
10796 ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an
10797 attachment is expected; an error will be reported if there's a
10798 mismatch. If one is found, *ATTACHMENT will be set to point into
10799 the packet buffer and *ATTACHMENT_LEN will be set to the
10800 attachment's length. */
10803 remote_hostio_send_command (int command_bytes
, int which_packet
,
10804 int *remote_errno
, char **attachment
,
10805 int *attachment_len
)
10807 struct remote_state
*rs
= get_remote_state ();
10808 int ret
, bytes_read
;
10809 char *attachment_tmp
;
10811 if (!rs
->remote_desc
10812 || packet_support (which_packet
) == PACKET_DISABLE
)
10814 *remote_errno
= FILEIO_ENOSYS
;
10818 putpkt_binary (rs
->buf
, command_bytes
);
10819 bytes_read
= getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0);
10821 /* If it timed out, something is wrong. Don't try to parse the
10823 if (bytes_read
< 0)
10825 *remote_errno
= FILEIO_EINVAL
;
10829 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[which_packet
]))
10832 *remote_errno
= FILEIO_EINVAL
;
10834 case PACKET_UNKNOWN
:
10835 *remote_errno
= FILEIO_ENOSYS
;
10841 if (remote_hostio_parse_result (rs
->buf
, &ret
, remote_errno
,
10844 *remote_errno
= FILEIO_EINVAL
;
10848 /* Make sure we saw an attachment if and only if we expected one. */
10849 if ((attachment_tmp
== NULL
&& attachment
!= NULL
)
10850 || (attachment_tmp
!= NULL
&& attachment
== NULL
))
10852 *remote_errno
= FILEIO_EINVAL
;
10856 /* If an attachment was found, it must point into the packet buffer;
10857 work out how many bytes there were. */
10858 if (attachment_tmp
!= NULL
)
10860 *attachment
= attachment_tmp
;
10861 *attachment_len
= bytes_read
- (*attachment
- rs
->buf
);
10867 /* Invalidate the readahead cache. */
10870 readahead_cache_invalidate (void)
10872 struct remote_state
*rs
= get_remote_state ();
10874 rs
->readahead_cache
.fd
= -1;
10877 /* Invalidate the readahead cache if it is holding data for FD. */
10880 readahead_cache_invalidate_fd (int fd
)
10882 struct remote_state
*rs
= get_remote_state ();
10884 if (rs
->readahead_cache
.fd
== fd
)
10885 rs
->readahead_cache
.fd
= -1;
10888 /* Set the filesystem remote_hostio functions that take FILENAME
10889 arguments will use. Return 0 on success, or -1 if an error
10890 occurs (and set *REMOTE_ERRNO). */
10893 remote_hostio_set_filesystem (struct inferior
*inf
, int *remote_errno
)
10895 struct remote_state
*rs
= get_remote_state ();
10896 int required_pid
= (inf
== NULL
|| inf
->fake_pid_p
) ? 0 : inf
->pid
;
10898 int left
= get_remote_packet_size () - 1;
10902 if (packet_support (PACKET_vFile_setfs
) == PACKET_DISABLE
)
10905 if (rs
->fs_pid
!= -1 && required_pid
== rs
->fs_pid
)
10908 remote_buffer_add_string (&p
, &left
, "vFile:setfs:");
10910 xsnprintf (arg
, sizeof (arg
), "%x", required_pid
);
10911 remote_buffer_add_string (&p
, &left
, arg
);
10913 ret
= remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_setfs
,
10914 remote_errno
, NULL
, NULL
);
10916 if (packet_support (PACKET_vFile_setfs
) == PACKET_DISABLE
)
10920 rs
->fs_pid
= required_pid
;
10925 /* Implementation of to_fileio_open. */
10928 remote_hostio_open (struct target_ops
*self
,
10929 struct inferior
*inf
, const char *filename
,
10930 int flags
, int mode
, int warn_if_slow
,
10933 struct remote_state
*rs
= get_remote_state ();
10935 int left
= get_remote_packet_size () - 1;
10939 static int warning_issued
= 0;
10941 printf_unfiltered (_("Reading %s from remote target...\n"),
10944 if (!warning_issued
)
10946 warning (_("File transfers from remote targets can be slow."
10947 " Use \"set sysroot\" to access files locally"
10949 warning_issued
= 1;
10953 if (remote_hostio_set_filesystem (inf
, remote_errno
) != 0)
10956 remote_buffer_add_string (&p
, &left
, "vFile:open:");
10958 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
10959 strlen (filename
));
10960 remote_buffer_add_string (&p
, &left
, ",");
10962 remote_buffer_add_int (&p
, &left
, flags
);
10963 remote_buffer_add_string (&p
, &left
, ",");
10965 remote_buffer_add_int (&p
, &left
, mode
);
10967 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_open
,
10968 remote_errno
, NULL
, NULL
);
10971 /* Implementation of to_fileio_pwrite. */
10974 remote_hostio_pwrite (struct target_ops
*self
,
10975 int fd
, const gdb_byte
*write_buf
, int len
,
10976 ULONGEST offset
, int *remote_errno
)
10978 struct remote_state
*rs
= get_remote_state ();
10980 int left
= get_remote_packet_size ();
10983 readahead_cache_invalidate_fd (fd
);
10985 remote_buffer_add_string (&p
, &left
, "vFile:pwrite:");
10987 remote_buffer_add_int (&p
, &left
, fd
);
10988 remote_buffer_add_string (&p
, &left
, ",");
10990 remote_buffer_add_int (&p
, &left
, offset
);
10991 remote_buffer_add_string (&p
, &left
, ",");
10993 p
+= remote_escape_output (write_buf
, len
, 1, (gdb_byte
*) p
, &out_len
,
10994 get_remote_packet_size () - (p
- rs
->buf
));
10996 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_pwrite
,
10997 remote_errno
, NULL
, NULL
);
11000 /* Helper for the implementation of to_fileio_pread. Read the file
11001 from the remote side with vFile:pread. */
11004 remote_hostio_pread_vFile (struct target_ops
*self
,
11005 int fd
, gdb_byte
*read_buf
, int len
,
11006 ULONGEST offset
, int *remote_errno
)
11008 struct remote_state
*rs
= get_remote_state ();
11011 int left
= get_remote_packet_size ();
11012 int ret
, attachment_len
;
11015 remote_buffer_add_string (&p
, &left
, "vFile:pread:");
11017 remote_buffer_add_int (&p
, &left
, fd
);
11018 remote_buffer_add_string (&p
, &left
, ",");
11020 remote_buffer_add_int (&p
, &left
, len
);
11021 remote_buffer_add_string (&p
, &left
, ",");
11023 remote_buffer_add_int (&p
, &left
, offset
);
11025 ret
= remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_pread
,
11026 remote_errno
, &attachment
,
11032 read_len
= remote_unescape_input ((gdb_byte
*) attachment
, attachment_len
,
11034 if (read_len
!= ret
)
11035 error (_("Read returned %d, but %d bytes."), ret
, (int) read_len
);
11040 /* Serve pread from the readahead cache. Returns number of bytes
11041 read, or 0 if the request can't be served from the cache. */
11044 remote_hostio_pread_from_cache (struct remote_state
*rs
,
11045 int fd
, gdb_byte
*read_buf
, size_t len
,
11048 struct readahead_cache
*cache
= &rs
->readahead_cache
;
11050 if (cache
->fd
== fd
11051 && cache
->offset
<= offset
11052 && offset
< cache
->offset
+ cache
->bufsize
)
11054 ULONGEST max
= cache
->offset
+ cache
->bufsize
;
11056 if (offset
+ len
> max
)
11057 len
= max
- offset
;
11059 memcpy (read_buf
, cache
->buf
+ offset
- cache
->offset
, len
);
11066 /* Implementation of to_fileio_pread. */
11069 remote_hostio_pread (struct target_ops
*self
,
11070 int fd
, gdb_byte
*read_buf
, int len
,
11071 ULONGEST offset
, int *remote_errno
)
11074 struct remote_state
*rs
= get_remote_state ();
11075 struct readahead_cache
*cache
= &rs
->readahead_cache
;
11077 ret
= remote_hostio_pread_from_cache (rs
, fd
, read_buf
, len
, offset
);
11080 cache
->hit_count
++;
11083 fprintf_unfiltered (gdb_stdlog
, "readahead cache hit %s\n",
11084 pulongest (cache
->hit_count
));
11088 cache
->miss_count
++;
11090 fprintf_unfiltered (gdb_stdlog
, "readahead cache miss %s\n",
11091 pulongest (cache
->miss_count
));
11094 cache
->offset
= offset
;
11095 cache
->bufsize
= get_remote_packet_size ();
11096 cache
->buf
= (gdb_byte
*) xrealloc (cache
->buf
, cache
->bufsize
);
11098 ret
= remote_hostio_pread_vFile (self
, cache
->fd
, cache
->buf
, cache
->bufsize
,
11099 cache
->offset
, remote_errno
);
11102 readahead_cache_invalidate_fd (fd
);
11106 cache
->bufsize
= ret
;
11107 return remote_hostio_pread_from_cache (rs
, fd
, read_buf
, len
, offset
);
11110 /* Implementation of to_fileio_close. */
11113 remote_hostio_close (struct target_ops
*self
, int fd
, int *remote_errno
)
11115 struct remote_state
*rs
= get_remote_state ();
11117 int left
= get_remote_packet_size () - 1;
11119 readahead_cache_invalidate_fd (fd
);
11121 remote_buffer_add_string (&p
, &left
, "vFile:close:");
11123 remote_buffer_add_int (&p
, &left
, fd
);
11125 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_close
,
11126 remote_errno
, NULL
, NULL
);
11129 /* Implementation of to_fileio_unlink. */
11132 remote_hostio_unlink (struct target_ops
*self
,
11133 struct inferior
*inf
, const char *filename
,
11136 struct remote_state
*rs
= get_remote_state ();
11138 int left
= get_remote_packet_size () - 1;
11140 if (remote_hostio_set_filesystem (inf
, remote_errno
) != 0)
11143 remote_buffer_add_string (&p
, &left
, "vFile:unlink:");
11145 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
11146 strlen (filename
));
11148 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_unlink
,
11149 remote_errno
, NULL
, NULL
);
11152 /* Implementation of to_fileio_readlink. */
11155 remote_hostio_readlink (struct target_ops
*self
,
11156 struct inferior
*inf
, const char *filename
,
11159 struct remote_state
*rs
= get_remote_state ();
11162 int left
= get_remote_packet_size ();
11163 int len
, attachment_len
;
11167 if (remote_hostio_set_filesystem (inf
, remote_errno
) != 0)
11170 remote_buffer_add_string (&p
, &left
, "vFile:readlink:");
11172 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
11173 strlen (filename
));
11175 len
= remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_readlink
,
11176 remote_errno
, &attachment
,
11182 ret
= (char *) xmalloc (len
+ 1);
11184 read_len
= remote_unescape_input ((gdb_byte
*) attachment
, attachment_len
,
11185 (gdb_byte
*) ret
, len
);
11186 if (read_len
!= len
)
11187 error (_("Readlink returned %d, but %d bytes."), len
, read_len
);
11193 /* Implementation of to_fileio_fstat. */
11196 remote_hostio_fstat (struct target_ops
*self
,
11197 int fd
, struct stat
*st
,
11200 struct remote_state
*rs
= get_remote_state ();
11202 int left
= get_remote_packet_size ();
11203 int attachment_len
, ret
;
11205 struct fio_stat fst
;
11208 remote_buffer_add_string (&p
, &left
, "vFile:fstat:");
11210 remote_buffer_add_int (&p
, &left
, fd
);
11212 ret
= remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_fstat
,
11213 remote_errno
, &attachment
,
11217 if (*remote_errno
!= FILEIO_ENOSYS
)
11220 /* Strictly we should return -1, ENOSYS here, but when
11221 "set sysroot remote:" was implemented in August 2008
11222 BFD's need for a stat function was sidestepped with
11223 this hack. This was not remedied until March 2015
11224 so we retain the previous behavior to avoid breaking
11227 Note that the memset is a March 2015 addition; older
11228 GDBs set st_size *and nothing else* so the structure
11229 would have garbage in all other fields. This might
11230 break something but retaining the previous behavior
11231 here would be just too wrong. */
11233 memset (st
, 0, sizeof (struct stat
));
11234 st
->st_size
= INT_MAX
;
11238 read_len
= remote_unescape_input ((gdb_byte
*) attachment
, attachment_len
,
11239 (gdb_byte
*) &fst
, sizeof (fst
));
11241 if (read_len
!= ret
)
11242 error (_("vFile:fstat returned %d, but %d bytes."), ret
, read_len
);
11244 if (read_len
!= sizeof (fst
))
11245 error (_("vFile:fstat returned %d bytes, but expecting %d."),
11246 read_len
, (int) sizeof (fst
));
11248 remote_fileio_to_host_stat (&fst
, st
);
11253 /* Implementation of to_filesystem_is_local. */
11256 remote_filesystem_is_local (struct target_ops
*self
)
11258 /* Valgrind GDB presents itself as a remote target but works
11259 on the local filesystem: it does not implement remote get
11260 and users are not expected to set a sysroot. To handle
11261 this case we treat the remote filesystem as local if the
11262 sysroot is exactly TARGET_SYSROOT_PREFIX and if the stub
11263 does not support vFile:open. */
11264 if (strcmp (gdb_sysroot
, TARGET_SYSROOT_PREFIX
) == 0)
11266 enum packet_support ps
= packet_support (PACKET_vFile_open
);
11268 if (ps
== PACKET_SUPPORT_UNKNOWN
)
11270 int fd
, remote_errno
;
11272 /* Try opening a file to probe support. The supplied
11273 filename is irrelevant, we only care about whether
11274 the stub recognizes the packet or not. */
11275 fd
= remote_hostio_open (self
, NULL
, "just probing",
11276 FILEIO_O_RDONLY
, 0700, 0,
11280 remote_hostio_close (self
, fd
, &remote_errno
);
11282 ps
= packet_support (PACKET_vFile_open
);
11285 if (ps
== PACKET_DISABLE
)
11287 static int warning_issued
= 0;
11289 if (!warning_issued
)
11291 warning (_("remote target does not support file"
11292 " transfer, attempting to access files"
11293 " from local filesystem."));
11294 warning_issued
= 1;
11305 remote_fileio_errno_to_host (int errnum
)
11311 case FILEIO_ENOENT
:
11319 case FILEIO_EACCES
:
11321 case FILEIO_EFAULT
:
11325 case FILEIO_EEXIST
:
11327 case FILEIO_ENODEV
:
11329 case FILEIO_ENOTDIR
:
11331 case FILEIO_EISDIR
:
11333 case FILEIO_EINVAL
:
11335 case FILEIO_ENFILE
:
11337 case FILEIO_EMFILE
:
11341 case FILEIO_ENOSPC
:
11343 case FILEIO_ESPIPE
:
11347 case FILEIO_ENOSYS
:
11349 case FILEIO_ENAMETOOLONG
:
11350 return ENAMETOOLONG
;
11356 remote_hostio_error (int errnum
)
11358 int host_error
= remote_fileio_errno_to_host (errnum
);
11360 if (host_error
== -1)
11361 error (_("Unknown remote I/O error %d"), errnum
);
11363 error (_("Remote I/O error: %s"), safe_strerror (host_error
));
11367 remote_hostio_close_cleanup (void *opaque
)
11369 int fd
= *(int *) opaque
;
11372 remote_hostio_close (find_target_at (process_stratum
), fd
, &remote_errno
);
11376 remote_file_put (const char *local_file
, const char *remote_file
, int from_tty
)
11378 struct cleanup
*back_to
, *close_cleanup
;
11379 int retcode
, fd
, remote_errno
, bytes
, io_size
;
11382 int bytes_in_buffer
;
11385 struct remote_state
*rs
= get_remote_state ();
11387 if (!rs
->remote_desc
)
11388 error (_("command can only be used with remote target"));
11390 file
= gdb_fopen_cloexec (local_file
, "rb");
11392 perror_with_name (local_file
);
11393 back_to
= make_cleanup_fclose (file
);
11395 fd
= remote_hostio_open (find_target_at (process_stratum
), NULL
,
11396 remote_file
, (FILEIO_O_WRONLY
| FILEIO_O_CREAT
11398 0700, 0, &remote_errno
);
11400 remote_hostio_error (remote_errno
);
11402 /* Send up to this many bytes at once. They won't all fit in the
11403 remote packet limit, so we'll transfer slightly fewer. */
11404 io_size
= get_remote_packet_size ();
11405 buffer
= (gdb_byte
*) xmalloc (io_size
);
11406 make_cleanup (xfree
, buffer
);
11408 close_cleanup
= make_cleanup (remote_hostio_close_cleanup
, &fd
);
11410 bytes_in_buffer
= 0;
11413 while (bytes_in_buffer
|| !saw_eof
)
11417 bytes
= fread (buffer
+ bytes_in_buffer
, 1,
11418 io_size
- bytes_in_buffer
,
11423 error (_("Error reading %s."), local_file
);
11426 /* EOF. Unless there is something still in the
11427 buffer from the last iteration, we are done. */
11429 if (bytes_in_buffer
== 0)
11437 bytes
+= bytes_in_buffer
;
11438 bytes_in_buffer
= 0;
11440 retcode
= remote_hostio_pwrite (find_target_at (process_stratum
),
11442 offset
, &remote_errno
);
11445 remote_hostio_error (remote_errno
);
11446 else if (retcode
== 0)
11447 error (_("Remote write of %d bytes returned 0!"), bytes
);
11448 else if (retcode
< bytes
)
11450 /* Short write. Save the rest of the read data for the next
11452 bytes_in_buffer
= bytes
- retcode
;
11453 memmove (buffer
, buffer
+ retcode
, bytes_in_buffer
);
11459 discard_cleanups (close_cleanup
);
11460 if (remote_hostio_close (find_target_at (process_stratum
), fd
, &remote_errno
))
11461 remote_hostio_error (remote_errno
);
11464 printf_filtered (_("Successfully sent file \"%s\".\n"), local_file
);
11465 do_cleanups (back_to
);
11469 remote_file_get (const char *remote_file
, const char *local_file
, int from_tty
)
11471 struct cleanup
*back_to
, *close_cleanup
;
11472 int fd
, remote_errno
, bytes
, io_size
;
11476 struct remote_state
*rs
= get_remote_state ();
11478 if (!rs
->remote_desc
)
11479 error (_("command can only be used with remote target"));
11481 fd
= remote_hostio_open (find_target_at (process_stratum
), NULL
,
11482 remote_file
, FILEIO_O_RDONLY
, 0, 0,
11485 remote_hostio_error (remote_errno
);
11487 file
= gdb_fopen_cloexec (local_file
, "wb");
11489 perror_with_name (local_file
);
11490 back_to
= make_cleanup_fclose (file
);
11492 /* Send up to this many bytes at once. They won't all fit in the
11493 remote packet limit, so we'll transfer slightly fewer. */
11494 io_size
= get_remote_packet_size ();
11495 buffer
= (gdb_byte
*) xmalloc (io_size
);
11496 make_cleanup (xfree
, buffer
);
11498 close_cleanup
= make_cleanup (remote_hostio_close_cleanup
, &fd
);
11503 bytes
= remote_hostio_pread (find_target_at (process_stratum
),
11504 fd
, buffer
, io_size
, offset
, &remote_errno
);
11506 /* Success, but no bytes, means end-of-file. */
11509 remote_hostio_error (remote_errno
);
11513 bytes
= fwrite (buffer
, 1, bytes
, file
);
11515 perror_with_name (local_file
);
11518 discard_cleanups (close_cleanup
);
11519 if (remote_hostio_close (find_target_at (process_stratum
), fd
, &remote_errno
))
11520 remote_hostio_error (remote_errno
);
11523 printf_filtered (_("Successfully fetched file \"%s\".\n"), remote_file
);
11524 do_cleanups (back_to
);
11528 remote_file_delete (const char *remote_file
, int from_tty
)
11530 int retcode
, remote_errno
;
11531 struct remote_state
*rs
= get_remote_state ();
11533 if (!rs
->remote_desc
)
11534 error (_("command can only be used with remote target"));
11536 retcode
= remote_hostio_unlink (find_target_at (process_stratum
),
11537 NULL
, remote_file
, &remote_errno
);
11539 remote_hostio_error (remote_errno
);
11542 printf_filtered (_("Successfully deleted file \"%s\".\n"), remote_file
);
11546 remote_put_command (char *args
, int from_tty
)
11548 struct cleanup
*back_to
;
11552 error_no_arg (_("file to put"));
11554 argv
= gdb_buildargv (args
);
11555 back_to
= make_cleanup_freeargv (argv
);
11556 if (argv
[0] == NULL
|| argv
[1] == NULL
|| argv
[2] != NULL
)
11557 error (_("Invalid parameters to remote put"));
11559 remote_file_put (argv
[0], argv
[1], from_tty
);
11561 do_cleanups (back_to
);
11565 remote_get_command (char *args
, int from_tty
)
11567 struct cleanup
*back_to
;
11571 error_no_arg (_("file to get"));
11573 argv
= gdb_buildargv (args
);
11574 back_to
= make_cleanup_freeargv (argv
);
11575 if (argv
[0] == NULL
|| argv
[1] == NULL
|| argv
[2] != NULL
)
11576 error (_("Invalid parameters to remote get"));
11578 remote_file_get (argv
[0], argv
[1], from_tty
);
11580 do_cleanups (back_to
);
11584 remote_delete_command (char *args
, int from_tty
)
11586 struct cleanup
*back_to
;
11590 error_no_arg (_("file to delete"));
11592 argv
= gdb_buildargv (args
);
11593 back_to
= make_cleanup_freeargv (argv
);
11594 if (argv
[0] == NULL
|| argv
[1] != NULL
)
11595 error (_("Invalid parameters to remote delete"));
11597 remote_file_delete (argv
[0], from_tty
);
11599 do_cleanups (back_to
);
11603 remote_command (char *args
, int from_tty
)
11605 help_list (remote_cmdlist
, "remote ", all_commands
, gdb_stdout
);
11609 remote_can_execute_reverse (struct target_ops
*self
)
11611 if (packet_support (PACKET_bs
) == PACKET_ENABLE
11612 || packet_support (PACKET_bc
) == PACKET_ENABLE
)
11619 remote_supports_non_stop (struct target_ops
*self
)
11625 remote_supports_disable_randomization (struct target_ops
*self
)
11627 /* Only supported in extended mode. */
11632 remote_supports_multi_process (struct target_ops
*self
)
11634 struct remote_state
*rs
= get_remote_state ();
11636 /* Only extended-remote handles being attached to multiple
11637 processes, even though plain remote can use the multi-process
11638 thread id extensions, so that GDB knows the target process's
11640 return rs
->extended
&& remote_multi_process_p (rs
);
11644 remote_supports_cond_tracepoints (void)
11646 return packet_support (PACKET_ConditionalTracepoints
) == PACKET_ENABLE
;
11650 remote_supports_cond_breakpoints (struct target_ops
*self
)
11652 return packet_support (PACKET_ConditionalBreakpoints
) == PACKET_ENABLE
;
11656 remote_supports_fast_tracepoints (void)
11658 return packet_support (PACKET_FastTracepoints
) == PACKET_ENABLE
;
11662 remote_supports_static_tracepoints (void)
11664 return packet_support (PACKET_StaticTracepoints
) == PACKET_ENABLE
;
11668 remote_supports_install_in_trace (void)
11670 return packet_support (PACKET_InstallInTrace
) == PACKET_ENABLE
;
11674 remote_supports_enable_disable_tracepoint (struct target_ops
*self
)
11676 return (packet_support (PACKET_EnableDisableTracepoints_feature
)
11681 remote_supports_string_tracing (struct target_ops
*self
)
11683 return packet_support (PACKET_tracenz_feature
) == PACKET_ENABLE
;
11687 remote_can_run_breakpoint_commands (struct target_ops
*self
)
11689 return packet_support (PACKET_BreakpointCommands
) == PACKET_ENABLE
;
11693 remote_trace_init (struct target_ops
*self
)
11696 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11697 if (strcmp (target_buf
, "OK") != 0)
11698 error (_("Target does not support this command."));
11701 static void free_actions_list (char **actions_list
);
11702 static void free_actions_list_cleanup_wrapper (void *);
11704 free_actions_list_cleanup_wrapper (void *al
)
11706 free_actions_list ((char **) al
);
11710 free_actions_list (char **actions_list
)
11714 if (actions_list
== 0)
11717 for (ndx
= 0; actions_list
[ndx
]; ndx
++)
11718 xfree (actions_list
[ndx
]);
11720 xfree (actions_list
);
11723 /* Recursive routine to walk through command list including loops, and
11724 download packets for each command. */
11727 remote_download_command_source (int num
, ULONGEST addr
,
11728 struct command_line
*cmds
)
11730 struct remote_state
*rs
= get_remote_state ();
11731 struct command_line
*cmd
;
11733 for (cmd
= cmds
; cmd
; cmd
= cmd
->next
)
11735 QUIT
; /* Allow user to bail out with ^C. */
11736 strcpy (rs
->buf
, "QTDPsrc:");
11737 encode_source_string (num
, addr
, "cmd", cmd
->line
,
11738 rs
->buf
+ strlen (rs
->buf
),
11739 rs
->buf_size
- strlen (rs
->buf
));
11741 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11742 if (strcmp (target_buf
, "OK"))
11743 warning (_("Target does not support source download."));
11745 if (cmd
->control_type
== while_control
11746 || cmd
->control_type
== while_stepping_control
)
11748 remote_download_command_source (num
, addr
, *cmd
->body_list
);
11750 QUIT
; /* Allow user to bail out with ^C. */
11751 strcpy (rs
->buf
, "QTDPsrc:");
11752 encode_source_string (num
, addr
, "cmd", "end",
11753 rs
->buf
+ strlen (rs
->buf
),
11754 rs
->buf_size
- strlen (rs
->buf
));
11756 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11757 if (strcmp (target_buf
, "OK"))
11758 warning (_("Target does not support source download."));
11764 remote_download_tracepoint (struct target_ops
*self
, struct bp_location
*loc
)
11766 #define BUF_SIZE 2048
11770 char buf
[BUF_SIZE
];
11771 char **tdp_actions
;
11772 char **stepping_actions
;
11774 struct cleanup
*old_chain
= NULL
;
11775 struct agent_expr
*aexpr
;
11776 struct cleanup
*aexpr_chain
= NULL
;
11778 struct breakpoint
*b
= loc
->owner
;
11779 struct tracepoint
*t
= (struct tracepoint
*) b
;
11781 encode_actions_rsp (loc
, &tdp_actions
, &stepping_actions
);
11782 old_chain
= make_cleanup (free_actions_list_cleanup_wrapper
,
11784 (void) make_cleanup (free_actions_list_cleanup_wrapper
,
11787 tpaddr
= loc
->address
;
11788 sprintf_vma (addrbuf
, tpaddr
);
11789 xsnprintf (buf
, BUF_SIZE
, "QTDP:%x:%s:%c:%lx:%x", b
->number
,
11790 addrbuf
, /* address */
11791 (b
->enable_state
== bp_enabled
? 'E' : 'D'),
11792 t
->step_count
, t
->pass_count
);
11793 /* Fast tracepoints are mostly handled by the target, but we can
11794 tell the target how big of an instruction block should be moved
11796 if (b
->type
== bp_fast_tracepoint
)
11798 /* Only test for support at download time; we may not know
11799 target capabilities at definition time. */
11800 if (remote_supports_fast_tracepoints ())
11802 if (gdbarch_fast_tracepoint_valid_at (loc
->gdbarch
, tpaddr
,
11804 xsnprintf (buf
+ strlen (buf
), BUF_SIZE
- strlen (buf
), ":F%x",
11805 gdb_insn_length (loc
->gdbarch
, tpaddr
));
11807 /* If it passed validation at definition but fails now,
11808 something is very wrong. */
11809 internal_error (__FILE__
, __LINE__
,
11810 _("Fast tracepoint not "
11811 "valid during download"));
11814 /* Fast tracepoints are functionally identical to regular
11815 tracepoints, so don't take lack of support as a reason to
11816 give up on the trace run. */
11817 warning (_("Target does not support fast tracepoints, "
11818 "downloading %d as regular tracepoint"), b
->number
);
11820 else if (b
->type
== bp_static_tracepoint
)
11822 /* Only test for support at download time; we may not know
11823 target capabilities at definition time. */
11824 if (remote_supports_static_tracepoints ())
11826 struct static_tracepoint_marker marker
;
11828 if (target_static_tracepoint_marker_at (tpaddr
, &marker
))
11829 strcat (buf
, ":S");
11831 error (_("Static tracepoint not valid during download"));
11834 /* Fast tracepoints are functionally identical to regular
11835 tracepoints, so don't take lack of support as a reason
11836 to give up on the trace run. */
11837 error (_("Target does not support static tracepoints"));
11839 /* If the tracepoint has a conditional, make it into an agent
11840 expression and append to the definition. */
11843 /* Only test support at download time, we may not know target
11844 capabilities at definition time. */
11845 if (remote_supports_cond_tracepoints ())
11847 aexpr
= gen_eval_for_expr (tpaddr
, loc
->cond
);
11848 aexpr_chain
= make_cleanup_free_agent_expr (aexpr
);
11849 xsnprintf (buf
+ strlen (buf
), BUF_SIZE
- strlen (buf
), ":X%x,",
11851 pkt
= buf
+ strlen (buf
);
11852 for (ndx
= 0; ndx
< aexpr
->len
; ++ndx
)
11853 pkt
= pack_hex_byte (pkt
, aexpr
->buf
[ndx
]);
11855 do_cleanups (aexpr_chain
);
11858 warning (_("Target does not support conditional tracepoints, "
11859 "ignoring tp %d cond"), b
->number
);
11862 if (b
->commands
|| *default_collect
)
11865 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11866 if (strcmp (target_buf
, "OK"))
11867 error (_("Target does not support tracepoints."));
11869 /* do_single_steps (t); */
11872 for (ndx
= 0; tdp_actions
[ndx
]; ndx
++)
11874 QUIT
; /* Allow user to bail out with ^C. */
11875 xsnprintf (buf
, BUF_SIZE
, "QTDP:-%x:%s:%s%c",
11876 b
->number
, addrbuf
, /* address */
11878 ((tdp_actions
[ndx
+ 1] || stepping_actions
)
11881 remote_get_noisy_reply (&target_buf
,
11883 if (strcmp (target_buf
, "OK"))
11884 error (_("Error on target while setting tracepoints."));
11887 if (stepping_actions
)
11889 for (ndx
= 0; stepping_actions
[ndx
]; ndx
++)
11891 QUIT
; /* Allow user to bail out with ^C. */
11892 xsnprintf (buf
, BUF_SIZE
, "QTDP:-%x:%s:%s%s%s",
11893 b
->number
, addrbuf
, /* address */
11894 ((ndx
== 0) ? "S" : ""),
11895 stepping_actions
[ndx
],
11896 (stepping_actions
[ndx
+ 1] ? "-" : ""));
11898 remote_get_noisy_reply (&target_buf
,
11900 if (strcmp (target_buf
, "OK"))
11901 error (_("Error on target while setting tracepoints."));
11905 if (packet_support (PACKET_TracepointSource
) == PACKET_ENABLE
)
11907 if (b
->location
!= NULL
)
11909 strcpy (buf
, "QTDPsrc:");
11910 encode_source_string (b
->number
, loc
->address
, "at",
11911 event_location_to_string (b
->location
),
11912 buf
+ strlen (buf
), 2048 - strlen (buf
));
11914 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11915 if (strcmp (target_buf
, "OK"))
11916 warning (_("Target does not support source download."));
11918 if (b
->cond_string
)
11920 strcpy (buf
, "QTDPsrc:");
11921 encode_source_string (b
->number
, loc
->address
,
11922 "cond", b
->cond_string
, buf
+ strlen (buf
),
11923 2048 - strlen (buf
));
11925 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11926 if (strcmp (target_buf
, "OK"))
11927 warning (_("Target does not support source download."));
11929 remote_download_command_source (b
->number
, loc
->address
,
11930 breakpoint_commands (b
));
11933 do_cleanups (old_chain
);
11937 remote_can_download_tracepoint (struct target_ops
*self
)
11939 struct remote_state
*rs
= get_remote_state ();
11940 struct trace_status
*ts
;
11943 /* Don't try to install tracepoints until we've relocated our
11944 symbols, and fetched and merged the target's tracepoint list with
11946 if (rs
->starting_up
)
11949 ts
= current_trace_status ();
11950 status
= remote_get_trace_status (self
, ts
);
11952 if (status
== -1 || !ts
->running_known
|| !ts
->running
)
11955 /* If we are in a tracing experiment, but remote stub doesn't support
11956 installing tracepoint in trace, we have to return. */
11957 if (!remote_supports_install_in_trace ())
11965 remote_download_trace_state_variable (struct target_ops
*self
,
11966 struct trace_state_variable
*tsv
)
11968 struct remote_state
*rs
= get_remote_state ();
11971 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTDV:%x:%s:%x:",
11972 tsv
->number
, phex ((ULONGEST
) tsv
->initial_value
, 8),
11974 p
= rs
->buf
+ strlen (rs
->buf
);
11975 if ((p
- rs
->buf
) + strlen (tsv
->name
) * 2 >= get_remote_packet_size ())
11976 error (_("Trace state variable name too long for tsv definition packet"));
11977 p
+= 2 * bin2hex ((gdb_byte
*) (tsv
->name
), p
, strlen (tsv
->name
));
11980 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11981 if (*target_buf
== '\0')
11982 error (_("Target does not support this command."));
11983 if (strcmp (target_buf
, "OK") != 0)
11984 error (_("Error on target while downloading trace state variable."));
11988 remote_enable_tracepoint (struct target_ops
*self
,
11989 struct bp_location
*location
)
11991 struct remote_state
*rs
= get_remote_state ();
11994 sprintf_vma (addr_buf
, location
->address
);
11995 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTEnable:%x:%s",
11996 location
->owner
->number
, addr_buf
);
11998 remote_get_noisy_reply (&rs
->buf
, &rs
->buf_size
);
11999 if (*rs
->buf
== '\0')
12000 error (_("Target does not support enabling tracepoints while a trace run is ongoing."));
12001 if (strcmp (rs
->buf
, "OK") != 0)
12002 error (_("Error on target while enabling tracepoint."));
12006 remote_disable_tracepoint (struct target_ops
*self
,
12007 struct bp_location
*location
)
12009 struct remote_state
*rs
= get_remote_state ();
12012 sprintf_vma (addr_buf
, location
->address
);
12013 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTDisable:%x:%s",
12014 location
->owner
->number
, addr_buf
);
12016 remote_get_noisy_reply (&rs
->buf
, &rs
->buf_size
);
12017 if (*rs
->buf
== '\0')
12018 error (_("Target does not support disabling tracepoints while a trace run is ongoing."));
12019 if (strcmp (rs
->buf
, "OK") != 0)
12020 error (_("Error on target while disabling tracepoint."));
12024 remote_trace_set_readonly_regions (struct target_ops
*self
)
12028 bfd_size_type size
;
12034 return; /* No information to give. */
12036 strcpy (target_buf
, "QTro");
12037 offset
= strlen (target_buf
);
12038 for (s
= exec_bfd
->sections
; s
; s
= s
->next
)
12040 char tmp1
[40], tmp2
[40];
12043 if ((s
->flags
& SEC_LOAD
) == 0 ||
12044 /* (s->flags & SEC_CODE) == 0 || */
12045 (s
->flags
& SEC_READONLY
) == 0)
12049 vma
= bfd_get_section_vma (abfd
, s
);
12050 size
= bfd_get_section_size (s
);
12051 sprintf_vma (tmp1
, vma
);
12052 sprintf_vma (tmp2
, vma
+ size
);
12053 sec_length
= 1 + strlen (tmp1
) + 1 + strlen (tmp2
);
12054 if (offset
+ sec_length
+ 1 > target_buf_size
)
12056 if (packet_support (PACKET_qXfer_traceframe_info
) != PACKET_ENABLE
)
12058 Too many sections for read-only sections definition packet."));
12061 xsnprintf (target_buf
+ offset
, target_buf_size
- offset
, ":%s,%s",
12063 offset
+= sec_length
;
12067 putpkt (target_buf
);
12068 getpkt (&target_buf
, &target_buf_size
, 0);
12073 remote_trace_start (struct target_ops
*self
)
12075 putpkt ("QTStart");
12076 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
12077 if (*target_buf
== '\0')
12078 error (_("Target does not support this command."));
12079 if (strcmp (target_buf
, "OK") != 0)
12080 error (_("Bogus reply from target: %s"), target_buf
);
12084 remote_get_trace_status (struct target_ops
*self
, struct trace_status
*ts
)
12086 /* Initialize it just to avoid a GCC false warning. */
12088 /* FIXME we need to get register block size some other way. */
12089 extern int trace_regblock_size
;
12090 enum packet_result result
;
12092 if (packet_support (PACKET_qTStatus
) == PACKET_DISABLE
)
12095 trace_regblock_size
= get_remote_arch_state ()->sizeof_g_packet
;
12097 putpkt ("qTStatus");
12101 p
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
12103 CATCH (ex
, RETURN_MASK_ERROR
)
12105 if (ex
.error
!= TARGET_CLOSE_ERROR
)
12107 exception_fprintf (gdb_stderr
, ex
, "qTStatus: ");
12110 throw_exception (ex
);
12114 result
= packet_ok (p
, &remote_protocol_packets
[PACKET_qTStatus
]);
12116 /* If the remote target doesn't do tracing, flag it. */
12117 if (result
== PACKET_UNKNOWN
)
12120 /* We're working with a live target. */
12121 ts
->filename
= NULL
;
12124 error (_("Bogus trace status reply from target: %s"), target_buf
);
12126 /* Function 'parse_trace_status' sets default value of each field of
12127 'ts' at first, so we don't have to do it here. */
12128 parse_trace_status (p
, ts
);
12130 return ts
->running
;
12134 remote_get_tracepoint_status (struct target_ops
*self
, struct breakpoint
*bp
,
12135 struct uploaded_tp
*utp
)
12137 struct remote_state
*rs
= get_remote_state ();
12139 struct bp_location
*loc
;
12140 struct tracepoint
*tp
= (struct tracepoint
*) bp
;
12141 size_t size
= get_remote_packet_size ();
12145 tp
->base
.hit_count
= 0;
12146 tp
->traceframe_usage
= 0;
12147 for (loc
= tp
->base
.loc
; loc
; loc
= loc
->next
)
12149 /* If the tracepoint was never downloaded, don't go asking for
12151 if (tp
->number_on_target
== 0)
12153 xsnprintf (rs
->buf
, size
, "qTP:%x:%s", tp
->number_on_target
,
12154 phex_nz (loc
->address
, 0));
12156 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
12157 if (reply
&& *reply
)
12160 parse_tracepoint_status (reply
+ 1, bp
, utp
);
12166 utp
->hit_count
= 0;
12167 utp
->traceframe_usage
= 0;
12168 xsnprintf (rs
->buf
, size
, "qTP:%x:%s", utp
->number
,
12169 phex_nz (utp
->addr
, 0));
12171 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
12172 if (reply
&& *reply
)
12175 parse_tracepoint_status (reply
+ 1, bp
, utp
);
12181 remote_trace_stop (struct target_ops
*self
)
12184 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
12185 if (*target_buf
== '\0')
12186 error (_("Target does not support this command."));
12187 if (strcmp (target_buf
, "OK") != 0)
12188 error (_("Bogus reply from target: %s"), target_buf
);
12192 remote_trace_find (struct target_ops
*self
,
12193 enum trace_find_type type
, int num
,
12194 CORE_ADDR addr1
, CORE_ADDR addr2
,
12197 struct remote_state
*rs
= get_remote_state ();
12198 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
12200 int target_frameno
= -1, target_tracept
= -1;
12202 /* Lookups other than by absolute frame number depend on the current
12203 trace selected, so make sure it is correct on the remote end
12205 if (type
!= tfind_number
)
12206 set_remote_traceframe ();
12209 strcpy (p
, "QTFrame:");
12210 p
= strchr (p
, '\0');
12214 xsnprintf (p
, endbuf
- p
, "%x", num
);
12217 xsnprintf (p
, endbuf
- p
, "pc:%s", phex_nz (addr1
, 0));
12220 xsnprintf (p
, endbuf
- p
, "tdp:%x", num
);
12223 xsnprintf (p
, endbuf
- p
, "range:%s:%s", phex_nz (addr1
, 0),
12224 phex_nz (addr2
, 0));
12226 case tfind_outside
:
12227 xsnprintf (p
, endbuf
- p
, "outside:%s:%s", phex_nz (addr1
, 0),
12228 phex_nz (addr2
, 0));
12231 error (_("Unknown trace find type %d"), type
);
12235 reply
= remote_get_noisy_reply (&(rs
->buf
), &rs
->buf_size
);
12236 if (*reply
== '\0')
12237 error (_("Target does not support this command."));
12239 while (reply
&& *reply
)
12244 target_frameno
= (int) strtol (p
, &reply
, 16);
12246 error (_("Unable to parse trace frame number"));
12247 /* Don't update our remote traceframe number cache on failure
12248 to select a remote traceframe. */
12249 if (target_frameno
== -1)
12254 target_tracept
= (int) strtol (p
, &reply
, 16);
12256 error (_("Unable to parse tracepoint number"));
12258 case 'O': /* "OK"? */
12259 if (reply
[1] == 'K' && reply
[2] == '\0')
12262 error (_("Bogus reply from target: %s"), reply
);
12265 error (_("Bogus reply from target: %s"), reply
);
12268 *tpp
= target_tracept
;
12270 rs
->remote_traceframe_number
= target_frameno
;
12271 return target_frameno
;
12275 remote_get_trace_state_variable_value (struct target_ops
*self
,
12276 int tsvnum
, LONGEST
*val
)
12278 struct remote_state
*rs
= get_remote_state ();
12282 set_remote_traceframe ();
12284 xsnprintf (rs
->buf
, get_remote_packet_size (), "qTV:%x", tsvnum
);
12286 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
12287 if (reply
&& *reply
)
12291 unpack_varlen_hex (reply
+ 1, &uval
);
12292 *val
= (LONGEST
) uval
;
12300 remote_save_trace_data (struct target_ops
*self
, const char *filename
)
12302 struct remote_state
*rs
= get_remote_state ();
12306 strcpy (p
, "QTSave:");
12308 if ((p
- rs
->buf
) + strlen (filename
) * 2 >= get_remote_packet_size ())
12309 error (_("Remote file name too long for trace save packet"));
12310 p
+= 2 * bin2hex ((gdb_byte
*) filename
, p
, strlen (filename
));
12313 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
12314 if (*reply
== '\0')
12315 error (_("Target does not support this command."));
12316 if (strcmp (reply
, "OK") != 0)
12317 error (_("Bogus reply from target: %s"), reply
);
12321 /* This is basically a memory transfer, but needs to be its own packet
12322 because we don't know how the target actually organizes its trace
12323 memory, plus we want to be able to ask for as much as possible, but
12324 not be unhappy if we don't get as much as we ask for. */
12327 remote_get_raw_trace_data (struct target_ops
*self
,
12328 gdb_byte
*buf
, ULONGEST offset
, LONGEST len
)
12330 struct remote_state
*rs
= get_remote_state ();
12336 strcpy (p
, "qTBuffer:");
12338 p
+= hexnumstr (p
, offset
);
12340 p
+= hexnumstr (p
, len
);
12344 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
12345 if (reply
&& *reply
)
12347 /* 'l' by itself means we're at the end of the buffer and
12348 there is nothing more to get. */
12352 /* Convert the reply into binary. Limit the number of bytes to
12353 convert according to our passed-in buffer size, rather than
12354 what was returned in the packet; if the target is
12355 unexpectedly generous and gives us a bigger reply than we
12356 asked for, we don't want to crash. */
12357 rslt
= hex2bin (target_buf
, buf
, len
);
12361 /* Something went wrong, flag as an error. */
12366 remote_set_disconnected_tracing (struct target_ops
*self
, int val
)
12368 struct remote_state
*rs
= get_remote_state ();
12370 if (packet_support (PACKET_DisconnectedTracing_feature
) == PACKET_ENABLE
)
12374 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTDisconnected:%x", val
);
12376 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
12377 if (*reply
== '\0')
12378 error (_("Target does not support this command."));
12379 if (strcmp (reply
, "OK") != 0)
12380 error (_("Bogus reply from target: %s"), reply
);
12383 warning (_("Target does not support disconnected tracing."));
12387 remote_core_of_thread (struct target_ops
*ops
, ptid_t ptid
)
12389 struct thread_info
*info
= find_thread_ptid (ptid
);
12391 if (info
&& info
->priv
)
12392 return info
->priv
->core
;
12397 remote_set_circular_trace_buffer (struct target_ops
*self
, int val
)
12399 struct remote_state
*rs
= get_remote_state ();
12402 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTBuffer:circular:%x", val
);
12404 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
12405 if (*reply
== '\0')
12406 error (_("Target does not support this command."));
12407 if (strcmp (reply
, "OK") != 0)
12408 error (_("Bogus reply from target: %s"), reply
);
12411 static struct traceframe_info
*
12412 remote_traceframe_info (struct target_ops
*self
)
12416 text
= target_read_stralloc (¤t_target
,
12417 TARGET_OBJECT_TRACEFRAME_INFO
, NULL
);
12420 struct traceframe_info
*info
;
12421 struct cleanup
*back_to
= make_cleanup (xfree
, text
);
12423 info
= parse_traceframe_info (text
);
12424 do_cleanups (back_to
);
12431 /* Handle the qTMinFTPILen packet. Returns the minimum length of
12432 instruction on which a fast tracepoint may be placed. Returns -1
12433 if the packet is not supported, and 0 if the minimum instruction
12434 length is unknown. */
12437 remote_get_min_fast_tracepoint_insn_len (struct target_ops
*self
)
12439 struct remote_state
*rs
= get_remote_state ();
12442 /* If we're not debugging a process yet, the IPA can't be
12444 if (!target_has_execution
)
12447 /* Make sure the remote is pointing at the right process. */
12448 set_general_process ();
12450 xsnprintf (rs
->buf
, get_remote_packet_size (), "qTMinFTPILen");
12452 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
12453 if (*reply
== '\0')
12457 ULONGEST min_insn_len
;
12459 unpack_varlen_hex (reply
, &min_insn_len
);
12461 return (int) min_insn_len
;
12466 remote_set_trace_buffer_size (struct target_ops
*self
, LONGEST val
)
12468 if (packet_support (PACKET_QTBuffer_size
) != PACKET_DISABLE
)
12470 struct remote_state
*rs
= get_remote_state ();
12471 char *buf
= rs
->buf
;
12472 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
12473 enum packet_result result
;
12475 gdb_assert (val
>= 0 || val
== -1);
12476 buf
+= xsnprintf (buf
, endbuf
- buf
, "QTBuffer:size:");
12477 /* Send -1 as literal "-1" to avoid host size dependency. */
12481 buf
+= hexnumstr (buf
, (ULONGEST
) -val
);
12484 buf
+= hexnumstr (buf
, (ULONGEST
) val
);
12487 remote_get_noisy_reply (&rs
->buf
, &rs
->buf_size
);
12488 result
= packet_ok (rs
->buf
,
12489 &remote_protocol_packets
[PACKET_QTBuffer_size
]);
12491 if (result
!= PACKET_OK
)
12492 warning (_("Bogus reply from target: %s"), rs
->buf
);
12497 remote_set_trace_notes (struct target_ops
*self
,
12498 const char *user
, const char *notes
,
12499 const char *stop_notes
)
12501 struct remote_state
*rs
= get_remote_state ();
12503 char *buf
= rs
->buf
;
12504 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
12507 buf
+= xsnprintf (buf
, endbuf
- buf
, "QTNotes:");
12510 buf
+= xsnprintf (buf
, endbuf
- buf
, "user:");
12511 nbytes
= bin2hex ((gdb_byte
*) user
, buf
, strlen (user
));
12517 buf
+= xsnprintf (buf
, endbuf
- buf
, "notes:");
12518 nbytes
= bin2hex ((gdb_byte
*) notes
, buf
, strlen (notes
));
12524 buf
+= xsnprintf (buf
, endbuf
- buf
, "tstop:");
12525 nbytes
= bin2hex ((gdb_byte
*) stop_notes
, buf
, strlen (stop_notes
));
12529 /* Ensure the buffer is terminated. */
12533 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
12534 if (*reply
== '\0')
12537 if (strcmp (reply
, "OK") != 0)
12538 error (_("Bogus reply from target: %s"), reply
);
12544 remote_use_agent (struct target_ops
*self
, int use
)
12546 if (packet_support (PACKET_QAgent
) != PACKET_DISABLE
)
12548 struct remote_state
*rs
= get_remote_state ();
12550 /* If the stub supports QAgent. */
12551 xsnprintf (rs
->buf
, get_remote_packet_size (), "QAgent:%d", use
);
12553 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
12555 if (strcmp (rs
->buf
, "OK") == 0)
12566 remote_can_use_agent (struct target_ops
*self
)
12568 return (packet_support (PACKET_QAgent
) != PACKET_DISABLE
);
12571 struct btrace_target_info
12573 /* The ptid of the traced thread. */
12576 /* The obtained branch trace configuration. */
12577 struct btrace_config conf
;
12580 /* Reset our idea of our target's btrace configuration. */
12583 remote_btrace_reset (void)
12585 struct remote_state
*rs
= get_remote_state ();
12587 memset (&rs
->btrace_config
, 0, sizeof (rs
->btrace_config
));
12590 /* Check whether the target supports branch tracing. */
12593 remote_supports_btrace (struct target_ops
*self
, enum btrace_format format
)
12595 if (packet_support (PACKET_Qbtrace_off
) != PACKET_ENABLE
)
12597 if (packet_support (PACKET_qXfer_btrace
) != PACKET_ENABLE
)
12602 case BTRACE_FORMAT_NONE
:
12605 case BTRACE_FORMAT_BTS
:
12606 return (packet_support (PACKET_Qbtrace_bts
) == PACKET_ENABLE
);
12608 case BTRACE_FORMAT_PT
:
12609 /* The trace is decoded on the host. Even if our target supports it,
12610 we still need to have libipt to decode the trace. */
12611 #if defined (HAVE_LIBIPT)
12612 return (packet_support (PACKET_Qbtrace_pt
) == PACKET_ENABLE
);
12613 #else /* !defined (HAVE_LIBIPT) */
12615 #endif /* !defined (HAVE_LIBIPT) */
12618 internal_error (__FILE__
, __LINE__
, _("Unknown branch trace format"));
12621 /* Synchronize the configuration with the target. */
12624 btrace_sync_conf (const struct btrace_config
*conf
)
12626 struct packet_config
*packet
;
12627 struct remote_state
*rs
;
12628 char *buf
, *pos
, *endbuf
;
12630 rs
= get_remote_state ();
12632 endbuf
= buf
+ get_remote_packet_size ();
12634 packet
= &remote_protocol_packets
[PACKET_Qbtrace_conf_bts_size
];
12635 if (packet_config_support (packet
) == PACKET_ENABLE
12636 && conf
->bts
.size
!= rs
->btrace_config
.bts
.size
)
12639 pos
+= xsnprintf (pos
, endbuf
- pos
, "%s=0x%x", packet
->name
,
12643 getpkt (&buf
, &rs
->buf_size
, 0);
12645 if (packet_ok (buf
, packet
) == PACKET_ERROR
)
12647 if (buf
[0] == 'E' && buf
[1] == '.')
12648 error (_("Failed to configure the BTS buffer size: %s"), buf
+ 2);
12650 error (_("Failed to configure the BTS buffer size."));
12653 rs
->btrace_config
.bts
.size
= conf
->bts
.size
;
12656 packet
= &remote_protocol_packets
[PACKET_Qbtrace_conf_pt_size
];
12657 if (packet_config_support (packet
) == PACKET_ENABLE
12658 && conf
->pt
.size
!= rs
->btrace_config
.pt
.size
)
12661 pos
+= xsnprintf (pos
, endbuf
- pos
, "%s=0x%x", packet
->name
,
12665 getpkt (&buf
, &rs
->buf_size
, 0);
12667 if (packet_ok (buf
, packet
) == PACKET_ERROR
)
12669 if (buf
[0] == 'E' && buf
[1] == '.')
12670 error (_("Failed to configure the trace buffer size: %s"), buf
+ 2);
12672 error (_("Failed to configure the trace buffer size."));
12675 rs
->btrace_config
.pt
.size
= conf
->pt
.size
;
12679 /* Read the current thread's btrace configuration from the target and
12680 store it into CONF. */
12683 btrace_read_config (struct btrace_config
*conf
)
12687 xml
= target_read_stralloc (¤t_target
,
12688 TARGET_OBJECT_BTRACE_CONF
, "");
12691 struct cleanup
*cleanup
;
12693 cleanup
= make_cleanup (xfree
, xml
);
12694 parse_xml_btrace_conf (conf
, xml
);
12695 do_cleanups (cleanup
);
12699 /* Enable branch tracing. */
12701 static struct btrace_target_info
*
12702 remote_enable_btrace (struct target_ops
*self
, ptid_t ptid
,
12703 const struct btrace_config
*conf
)
12705 struct btrace_target_info
*tinfo
= NULL
;
12706 struct packet_config
*packet
= NULL
;
12707 struct remote_state
*rs
= get_remote_state ();
12708 char *buf
= rs
->buf
;
12709 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
12711 switch (conf
->format
)
12713 case BTRACE_FORMAT_BTS
:
12714 packet
= &remote_protocol_packets
[PACKET_Qbtrace_bts
];
12717 case BTRACE_FORMAT_PT
:
12718 packet
= &remote_protocol_packets
[PACKET_Qbtrace_pt
];
12722 if (packet
== NULL
|| packet_config_support (packet
) != PACKET_ENABLE
)
12723 error (_("Target does not support branch tracing."));
12725 btrace_sync_conf (conf
);
12727 set_general_thread (ptid
);
12729 buf
+= xsnprintf (buf
, endbuf
- buf
, "%s", packet
->name
);
12731 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
12733 if (packet_ok (rs
->buf
, packet
) == PACKET_ERROR
)
12735 if (rs
->buf
[0] == 'E' && rs
->buf
[1] == '.')
12736 error (_("Could not enable branch tracing for %s: %s"),
12737 target_pid_to_str (ptid
), rs
->buf
+ 2);
12739 error (_("Could not enable branch tracing for %s."),
12740 target_pid_to_str (ptid
));
12743 tinfo
= XCNEW (struct btrace_target_info
);
12744 tinfo
->ptid
= ptid
;
12746 /* If we fail to read the configuration, we lose some information, but the
12747 tracing itself is not impacted. */
12750 btrace_read_config (&tinfo
->conf
);
12752 CATCH (err
, RETURN_MASK_ERROR
)
12754 if (err
.message
!= NULL
)
12755 warning ("%s", err
.message
);
12762 /* Disable branch tracing. */
12765 remote_disable_btrace (struct target_ops
*self
,
12766 struct btrace_target_info
*tinfo
)
12768 struct packet_config
*packet
= &remote_protocol_packets
[PACKET_Qbtrace_off
];
12769 struct remote_state
*rs
= get_remote_state ();
12770 char *buf
= rs
->buf
;
12771 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
12773 if (packet_config_support (packet
) != PACKET_ENABLE
)
12774 error (_("Target does not support branch tracing."));
12776 set_general_thread (tinfo
->ptid
);
12778 buf
+= xsnprintf (buf
, endbuf
- buf
, "%s", packet
->name
);
12780 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
12782 if (packet_ok (rs
->buf
, packet
) == PACKET_ERROR
)
12784 if (rs
->buf
[0] == 'E' && rs
->buf
[1] == '.')
12785 error (_("Could not disable branch tracing for %s: %s"),
12786 target_pid_to_str (tinfo
->ptid
), rs
->buf
+ 2);
12788 error (_("Could not disable branch tracing for %s."),
12789 target_pid_to_str (tinfo
->ptid
));
12795 /* Teardown branch tracing. */
12798 remote_teardown_btrace (struct target_ops
*self
,
12799 struct btrace_target_info
*tinfo
)
12801 /* We must not talk to the target during teardown. */
12805 /* Read the branch trace. */
12807 static enum btrace_error
12808 remote_read_btrace (struct target_ops
*self
,
12809 struct btrace_data
*btrace
,
12810 struct btrace_target_info
*tinfo
,
12811 enum btrace_read_type type
)
12813 struct packet_config
*packet
= &remote_protocol_packets
[PACKET_qXfer_btrace
];
12814 struct remote_state
*rs
= get_remote_state ();
12815 struct cleanup
*cleanup
;
12819 if (packet_config_support (packet
) != PACKET_ENABLE
)
12820 error (_("Target does not support branch tracing."));
12822 #if !defined(HAVE_LIBEXPAT)
12823 error (_("Cannot process branch tracing result. XML parsing not supported."));
12828 case BTRACE_READ_ALL
:
12831 case BTRACE_READ_NEW
:
12834 case BTRACE_READ_DELTA
:
12838 internal_error (__FILE__
, __LINE__
,
12839 _("Bad branch tracing read type: %u."),
12840 (unsigned int) type
);
12843 xml
= target_read_stralloc (¤t_target
,
12844 TARGET_OBJECT_BTRACE
, annex
);
12846 return BTRACE_ERR_UNKNOWN
;
12848 cleanup
= make_cleanup (xfree
, xml
);
12849 parse_xml_btrace (btrace
, xml
);
12850 do_cleanups (cleanup
);
12852 return BTRACE_ERR_NONE
;
12855 static const struct btrace_config
*
12856 remote_btrace_conf (struct target_ops
*self
,
12857 const struct btrace_target_info
*tinfo
)
12859 return &tinfo
->conf
;
12863 remote_augmented_libraries_svr4_read (struct target_ops
*self
)
12865 return (packet_support (PACKET_augmented_libraries_svr4_read_feature
)
12869 /* Implementation of to_load. */
12872 remote_load (struct target_ops
*self
, const char *name
, int from_tty
)
12874 generic_load (name
, from_tty
);
12877 /* Accepts an integer PID; returns a string representing a file that
12878 can be opened on the remote side to get the symbols for the child
12879 process. Returns NULL if the operation is not supported. */
12882 remote_pid_to_exec_file (struct target_ops
*self
, int pid
)
12884 static char *filename
= NULL
;
12885 struct inferior
*inf
;
12886 char *annex
= NULL
;
12888 if (packet_support (PACKET_qXfer_exec_file
) != PACKET_ENABLE
)
12891 if (filename
!= NULL
)
12894 inf
= find_inferior_pid (pid
);
12896 internal_error (__FILE__
, __LINE__
,
12897 _("not currently attached to process %d"), pid
);
12899 if (!inf
->fake_pid_p
)
12901 const int annex_size
= 9;
12903 annex
= (char *) alloca (annex_size
);
12904 xsnprintf (annex
, annex_size
, "%x", pid
);
12907 filename
= target_read_stralloc (¤t_target
,
12908 TARGET_OBJECT_EXEC_FILE
, annex
);
12913 /* Implement the to_can_do_single_step target_ops method. */
12916 remote_can_do_single_step (struct target_ops
*ops
)
12918 /* We can only tell whether target supports single step or not by
12919 supported s and S vCont actions if the stub supports vContSupported
12920 feature. If the stub doesn't support vContSupported feature,
12921 we have conservatively to think target doesn't supports single
12923 if (packet_support (PACKET_vContSupported
) == PACKET_ENABLE
)
12925 struct remote_state
*rs
= get_remote_state ();
12927 if (packet_support (PACKET_vCont
) == PACKET_SUPPORT_UNKNOWN
)
12928 remote_vcont_probe (rs
);
12930 return rs
->supports_vCont
.s
&& rs
->supports_vCont
.S
;
12937 init_remote_ops (void)
12939 remote_ops
.to_shortname
= "remote";
12940 remote_ops
.to_longname
= "Remote serial target in gdb-specific protocol";
12941 remote_ops
.to_doc
=
12942 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
12943 Specify the serial device it is connected to\n\
12944 (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).";
12945 remote_ops
.to_open
= remote_open
;
12946 remote_ops
.to_close
= remote_close
;
12947 remote_ops
.to_detach
= remote_detach
;
12948 remote_ops
.to_disconnect
= remote_disconnect
;
12949 remote_ops
.to_resume
= remote_resume
;
12950 remote_ops
.to_wait
= remote_wait
;
12951 remote_ops
.to_fetch_registers
= remote_fetch_registers
;
12952 remote_ops
.to_store_registers
= remote_store_registers
;
12953 remote_ops
.to_prepare_to_store
= remote_prepare_to_store
;
12954 remote_ops
.to_files_info
= remote_files_info
;
12955 remote_ops
.to_insert_breakpoint
= remote_insert_breakpoint
;
12956 remote_ops
.to_remove_breakpoint
= remote_remove_breakpoint
;
12957 remote_ops
.to_stopped_by_sw_breakpoint
= remote_stopped_by_sw_breakpoint
;
12958 remote_ops
.to_supports_stopped_by_sw_breakpoint
= remote_supports_stopped_by_sw_breakpoint
;
12959 remote_ops
.to_stopped_by_hw_breakpoint
= remote_stopped_by_hw_breakpoint
;
12960 remote_ops
.to_supports_stopped_by_hw_breakpoint
= remote_supports_stopped_by_hw_breakpoint
;
12961 remote_ops
.to_stopped_by_watchpoint
= remote_stopped_by_watchpoint
;
12962 remote_ops
.to_stopped_data_address
= remote_stopped_data_address
;
12963 remote_ops
.to_watchpoint_addr_within_range
=
12964 remote_watchpoint_addr_within_range
;
12965 remote_ops
.to_can_use_hw_breakpoint
= remote_check_watch_resources
;
12966 remote_ops
.to_insert_hw_breakpoint
= remote_insert_hw_breakpoint
;
12967 remote_ops
.to_remove_hw_breakpoint
= remote_remove_hw_breakpoint
;
12968 remote_ops
.to_region_ok_for_hw_watchpoint
12969 = remote_region_ok_for_hw_watchpoint
;
12970 remote_ops
.to_insert_watchpoint
= remote_insert_watchpoint
;
12971 remote_ops
.to_remove_watchpoint
= remote_remove_watchpoint
;
12972 remote_ops
.to_kill
= remote_kill
;
12973 remote_ops
.to_load
= remote_load
;
12974 remote_ops
.to_mourn_inferior
= remote_mourn
;
12975 remote_ops
.to_pass_signals
= remote_pass_signals
;
12976 remote_ops
.to_program_signals
= remote_program_signals
;
12977 remote_ops
.to_thread_alive
= remote_thread_alive
;
12978 remote_ops
.to_thread_name
= remote_thread_name
;
12979 remote_ops
.to_update_thread_list
= remote_update_thread_list
;
12980 remote_ops
.to_pid_to_str
= remote_pid_to_str
;
12981 remote_ops
.to_extra_thread_info
= remote_threads_extra_info
;
12982 remote_ops
.to_get_ada_task_ptid
= remote_get_ada_task_ptid
;
12983 remote_ops
.to_stop
= remote_stop
;
12984 remote_ops
.to_interrupt
= remote_interrupt
;
12985 remote_ops
.to_check_pending_interrupt
= remote_check_pending_interrupt
;
12986 remote_ops
.to_xfer_partial
= remote_xfer_partial
;
12987 remote_ops
.to_rcmd
= remote_rcmd
;
12988 remote_ops
.to_pid_to_exec_file
= remote_pid_to_exec_file
;
12989 remote_ops
.to_log_command
= serial_log_command
;
12990 remote_ops
.to_get_thread_local_address
= remote_get_thread_local_address
;
12991 remote_ops
.to_stratum
= process_stratum
;
12992 remote_ops
.to_has_all_memory
= default_child_has_all_memory
;
12993 remote_ops
.to_has_memory
= default_child_has_memory
;
12994 remote_ops
.to_has_stack
= default_child_has_stack
;
12995 remote_ops
.to_has_registers
= default_child_has_registers
;
12996 remote_ops
.to_has_execution
= default_child_has_execution
;
12997 remote_ops
.to_has_thread_control
= tc_schedlock
; /* can lock scheduler */
12998 remote_ops
.to_can_execute_reverse
= remote_can_execute_reverse
;
12999 remote_ops
.to_magic
= OPS_MAGIC
;
13000 remote_ops
.to_memory_map
= remote_memory_map
;
13001 remote_ops
.to_flash_erase
= remote_flash_erase
;
13002 remote_ops
.to_flash_done
= remote_flash_done
;
13003 remote_ops
.to_read_description
= remote_read_description
;
13004 remote_ops
.to_search_memory
= remote_search_memory
;
13005 remote_ops
.to_can_async_p
= remote_can_async_p
;
13006 remote_ops
.to_is_async_p
= remote_is_async_p
;
13007 remote_ops
.to_async
= remote_async
;
13008 remote_ops
.to_thread_events
= remote_thread_events
;
13009 remote_ops
.to_can_do_single_step
= remote_can_do_single_step
;
13010 remote_ops
.to_terminal_inferior
= remote_terminal_inferior
;
13011 remote_ops
.to_terminal_ours
= remote_terminal_ours
;
13012 remote_ops
.to_supports_non_stop
= remote_supports_non_stop
;
13013 remote_ops
.to_supports_multi_process
= remote_supports_multi_process
;
13014 remote_ops
.to_supports_disable_randomization
13015 = remote_supports_disable_randomization
;
13016 remote_ops
.to_filesystem_is_local
= remote_filesystem_is_local
;
13017 remote_ops
.to_fileio_open
= remote_hostio_open
;
13018 remote_ops
.to_fileio_pwrite
= remote_hostio_pwrite
;
13019 remote_ops
.to_fileio_pread
= remote_hostio_pread
;
13020 remote_ops
.to_fileio_fstat
= remote_hostio_fstat
;
13021 remote_ops
.to_fileio_close
= remote_hostio_close
;
13022 remote_ops
.to_fileio_unlink
= remote_hostio_unlink
;
13023 remote_ops
.to_fileio_readlink
= remote_hostio_readlink
;
13024 remote_ops
.to_supports_enable_disable_tracepoint
= remote_supports_enable_disable_tracepoint
;
13025 remote_ops
.to_supports_string_tracing
= remote_supports_string_tracing
;
13026 remote_ops
.to_supports_evaluation_of_breakpoint_conditions
= remote_supports_cond_breakpoints
;
13027 remote_ops
.to_can_run_breakpoint_commands
= remote_can_run_breakpoint_commands
;
13028 remote_ops
.to_trace_init
= remote_trace_init
;
13029 remote_ops
.to_download_tracepoint
= remote_download_tracepoint
;
13030 remote_ops
.to_can_download_tracepoint
= remote_can_download_tracepoint
;
13031 remote_ops
.to_download_trace_state_variable
13032 = remote_download_trace_state_variable
;
13033 remote_ops
.to_enable_tracepoint
= remote_enable_tracepoint
;
13034 remote_ops
.to_disable_tracepoint
= remote_disable_tracepoint
;
13035 remote_ops
.to_trace_set_readonly_regions
= remote_trace_set_readonly_regions
;
13036 remote_ops
.to_trace_start
= remote_trace_start
;
13037 remote_ops
.to_get_trace_status
= remote_get_trace_status
;
13038 remote_ops
.to_get_tracepoint_status
= remote_get_tracepoint_status
;
13039 remote_ops
.to_trace_stop
= remote_trace_stop
;
13040 remote_ops
.to_trace_find
= remote_trace_find
;
13041 remote_ops
.to_get_trace_state_variable_value
13042 = remote_get_trace_state_variable_value
;
13043 remote_ops
.to_save_trace_data
= remote_save_trace_data
;
13044 remote_ops
.to_upload_tracepoints
= remote_upload_tracepoints
;
13045 remote_ops
.to_upload_trace_state_variables
13046 = remote_upload_trace_state_variables
;
13047 remote_ops
.to_get_raw_trace_data
= remote_get_raw_trace_data
;
13048 remote_ops
.to_get_min_fast_tracepoint_insn_len
= remote_get_min_fast_tracepoint_insn_len
;
13049 remote_ops
.to_set_disconnected_tracing
= remote_set_disconnected_tracing
;
13050 remote_ops
.to_set_circular_trace_buffer
= remote_set_circular_trace_buffer
;
13051 remote_ops
.to_set_trace_buffer_size
= remote_set_trace_buffer_size
;
13052 remote_ops
.to_set_trace_notes
= remote_set_trace_notes
;
13053 remote_ops
.to_core_of_thread
= remote_core_of_thread
;
13054 remote_ops
.to_verify_memory
= remote_verify_memory
;
13055 remote_ops
.to_get_tib_address
= remote_get_tib_address
;
13056 remote_ops
.to_set_permissions
= remote_set_permissions
;
13057 remote_ops
.to_static_tracepoint_marker_at
13058 = remote_static_tracepoint_marker_at
;
13059 remote_ops
.to_static_tracepoint_markers_by_strid
13060 = remote_static_tracepoint_markers_by_strid
;
13061 remote_ops
.to_traceframe_info
= remote_traceframe_info
;
13062 remote_ops
.to_use_agent
= remote_use_agent
;
13063 remote_ops
.to_can_use_agent
= remote_can_use_agent
;
13064 remote_ops
.to_supports_btrace
= remote_supports_btrace
;
13065 remote_ops
.to_enable_btrace
= remote_enable_btrace
;
13066 remote_ops
.to_disable_btrace
= remote_disable_btrace
;
13067 remote_ops
.to_teardown_btrace
= remote_teardown_btrace
;
13068 remote_ops
.to_read_btrace
= remote_read_btrace
;
13069 remote_ops
.to_btrace_conf
= remote_btrace_conf
;
13070 remote_ops
.to_augmented_libraries_svr4_read
=
13071 remote_augmented_libraries_svr4_read
;
13074 /* Set up the extended remote vector by making a copy of the standard
13075 remote vector and adding to it. */
13078 init_extended_remote_ops (void)
13080 extended_remote_ops
= remote_ops
;
13082 extended_remote_ops
.to_shortname
= "extended-remote";
13083 extended_remote_ops
.to_longname
=
13084 "Extended remote serial target in gdb-specific protocol";
13085 extended_remote_ops
.to_doc
=
13086 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
13087 Specify the serial device it is connected to (e.g. /dev/ttya).";
13088 extended_remote_ops
.to_open
= extended_remote_open
;
13089 extended_remote_ops
.to_create_inferior
= extended_remote_create_inferior
;
13090 extended_remote_ops
.to_mourn_inferior
= extended_remote_mourn
;
13091 extended_remote_ops
.to_detach
= extended_remote_detach
;
13092 extended_remote_ops
.to_attach
= extended_remote_attach
;
13093 extended_remote_ops
.to_post_attach
= extended_remote_post_attach
;
13094 extended_remote_ops
.to_kill
= extended_remote_kill
;
13095 extended_remote_ops
.to_supports_disable_randomization
13096 = extended_remote_supports_disable_randomization
;
13097 extended_remote_ops
.to_follow_fork
= remote_follow_fork
;
13098 extended_remote_ops
.to_follow_exec
= remote_follow_exec
;
13099 extended_remote_ops
.to_insert_fork_catchpoint
13100 = remote_insert_fork_catchpoint
;
13101 extended_remote_ops
.to_remove_fork_catchpoint
13102 = remote_remove_fork_catchpoint
;
13103 extended_remote_ops
.to_insert_vfork_catchpoint
13104 = remote_insert_vfork_catchpoint
;
13105 extended_remote_ops
.to_remove_vfork_catchpoint
13106 = remote_remove_vfork_catchpoint
;
13107 extended_remote_ops
.to_insert_exec_catchpoint
13108 = remote_insert_exec_catchpoint
;
13109 extended_remote_ops
.to_remove_exec_catchpoint
13110 = remote_remove_exec_catchpoint
;
13114 remote_can_async_p (struct target_ops
*ops
)
13116 struct remote_state
*rs
= get_remote_state ();
13118 if (!target_async_permitted
)
13119 /* We only enable async when the user specifically asks for it. */
13122 /* We're async whenever the serial device is. */
13123 return serial_can_async_p (rs
->remote_desc
);
13127 remote_is_async_p (struct target_ops
*ops
)
13129 struct remote_state
*rs
= get_remote_state ();
13131 if (!target_async_permitted
)
13132 /* We only enable async when the user specifically asks for it. */
13135 /* We're async whenever the serial device is. */
13136 return serial_is_async_p (rs
->remote_desc
);
13139 /* Pass the SERIAL event on and up to the client. One day this code
13140 will be able to delay notifying the client of an event until the
13141 point where an entire packet has been received. */
13143 static serial_event_ftype remote_async_serial_handler
;
13146 remote_async_serial_handler (struct serial
*scb
, void *context
)
13148 struct remote_state
*rs
= (struct remote_state
*) context
;
13150 /* Don't propogate error information up to the client. Instead let
13151 the client find out about the error by querying the target. */
13152 inferior_event_handler (INF_REG_EVENT
, NULL
);
13156 remote_async_inferior_event_handler (gdb_client_data data
)
13158 inferior_event_handler (INF_REG_EVENT
, NULL
);
13162 remote_async (struct target_ops
*ops
, int enable
)
13164 struct remote_state
*rs
= get_remote_state ();
13168 serial_async (rs
->remote_desc
, remote_async_serial_handler
, rs
);
13170 /* If there are pending events in the stop reply queue tell the
13171 event loop to process them. */
13172 if (!QUEUE_is_empty (stop_reply_p
, stop_reply_queue
))
13173 mark_async_event_handler (remote_async_inferior_event_token
);
13174 /* For simplicity, below we clear the pending events token
13175 without remembering whether it is marked, so here we always
13176 mark it. If there's actually no pending notification to
13177 process, this ends up being a no-op (other than a spurious
13178 event-loop wakeup). */
13179 if (target_is_non_stop_p ())
13180 mark_async_event_handler (rs
->notif_state
->get_pending_events_token
);
13184 serial_async (rs
->remote_desc
, NULL
, NULL
);
13185 /* If the core is disabling async, it doesn't want to be
13186 disturbed with target events. Clear all async event sources
13188 clear_async_event_handler (remote_async_inferior_event_token
);
13189 if (target_is_non_stop_p ())
13190 clear_async_event_handler (rs
->notif_state
->get_pending_events_token
);
13194 /* Implementation of the to_thread_events method. */
13197 remote_thread_events (struct target_ops
*ops
, int enable
)
13199 struct remote_state
*rs
= get_remote_state ();
13200 size_t size
= get_remote_packet_size ();
13203 if (packet_support (PACKET_QThreadEvents
) == PACKET_DISABLE
)
13206 xsnprintf (rs
->buf
, size
, "QThreadEvents:%x", enable
? 1 : 0);
13208 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
13210 switch (packet_ok (rs
->buf
,
13211 &remote_protocol_packets
[PACKET_QThreadEvents
]))
13214 if (strcmp (rs
->buf
, "OK") != 0)
13215 error (_("Remote refused setting thread events: %s"), rs
->buf
);
13218 warning (_("Remote failure reply: %s"), rs
->buf
);
13220 case PACKET_UNKNOWN
:
13226 set_remote_cmd (char *args
, int from_tty
)
13228 help_list (remote_set_cmdlist
, "set remote ", all_commands
, gdb_stdout
);
13232 show_remote_cmd (char *args
, int from_tty
)
13234 /* We can't just use cmd_show_list here, because we want to skip
13235 the redundant "show remote Z-packet" and the legacy aliases. */
13236 struct cleanup
*showlist_chain
;
13237 struct cmd_list_element
*list
= remote_show_cmdlist
;
13238 struct ui_out
*uiout
= current_uiout
;
13240 showlist_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "showlist");
13241 for (; list
!= NULL
; list
= list
->next
)
13242 if (strcmp (list
->name
, "Z-packet") == 0)
13244 else if (list
->type
== not_set_cmd
)
13245 /* Alias commands are exactly like the original, except they
13246 don't have the normal type. */
13250 struct cleanup
*option_chain
13251 = make_cleanup_ui_out_tuple_begin_end (uiout
, "option");
13253 ui_out_field_string (uiout
, "name", list
->name
);
13254 ui_out_text (uiout
, ": ");
13255 if (list
->type
== show_cmd
)
13256 do_show_command ((char *) NULL
, from_tty
, list
);
13258 cmd_func (list
, NULL
, from_tty
);
13259 /* Close the tuple. */
13260 do_cleanups (option_chain
);
13263 /* Close the tuple. */
13264 do_cleanups (showlist_chain
);
13268 /* Function to be called whenever a new objfile (shlib) is detected. */
13270 remote_new_objfile (struct objfile
*objfile
)
13272 struct remote_state
*rs
= get_remote_state ();
13274 if (rs
->remote_desc
!= 0) /* Have a remote connection. */
13275 remote_check_symbols ();
13278 /* Pull all the tracepoints defined on the target and create local
13279 data structures representing them. We don't want to create real
13280 tracepoints yet, we don't want to mess up the user's existing
13284 remote_upload_tracepoints (struct target_ops
*self
, struct uploaded_tp
**utpp
)
13286 struct remote_state
*rs
= get_remote_state ();
13289 /* Ask for a first packet of tracepoint definition. */
13291 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
13293 while (*p
&& *p
!= 'l')
13295 parse_tracepoint_definition (p
, utpp
);
13296 /* Ask for another packet of tracepoint definition. */
13298 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
13305 remote_upload_trace_state_variables (struct target_ops
*self
,
13306 struct uploaded_tsv
**utsvp
)
13308 struct remote_state
*rs
= get_remote_state ();
13311 /* Ask for a first packet of variable definition. */
13313 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
13315 while (*p
&& *p
!= 'l')
13317 parse_tsv_definition (p
, utsvp
);
13318 /* Ask for another packet of variable definition. */
13320 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
13326 /* The "set/show range-stepping" show hook. */
13329 show_range_stepping (struct ui_file
*file
, int from_tty
,
13330 struct cmd_list_element
*c
,
13333 fprintf_filtered (file
,
13334 _("Debugger's willingness to use range stepping "
13335 "is %s.\n"), value
);
13338 /* The "set/show range-stepping" set hook. */
13341 set_range_stepping (char *ignore_args
, int from_tty
,
13342 struct cmd_list_element
*c
)
13344 struct remote_state
*rs
= get_remote_state ();
13346 /* Whene enabling, check whether range stepping is actually
13347 supported by the target, and warn if not. */
13348 if (use_range_stepping
)
13350 if (rs
->remote_desc
!= NULL
)
13352 if (packet_support (PACKET_vCont
) == PACKET_SUPPORT_UNKNOWN
)
13353 remote_vcont_probe (rs
);
13355 if (packet_support (PACKET_vCont
) == PACKET_ENABLE
13356 && rs
->supports_vCont
.r
)
13360 warning (_("Range stepping is not supported by the current target"));
13365 _initialize_remote (void)
13367 struct remote_state
*rs
;
13368 struct cmd_list_element
*cmd
;
13369 const char *cmd_name
;
13371 /* architecture specific data */
13372 remote_gdbarch_data_handle
=
13373 gdbarch_data_register_post_init (init_remote_state
);
13374 remote_g_packet_data_handle
=
13375 gdbarch_data_register_pre_init (remote_g_packet_data_init
);
13378 = register_program_space_data_with_cleanup (NULL
,
13379 remote_pspace_data_cleanup
);
13381 /* Initialize the per-target state. At the moment there is only one
13382 of these, not one per target. Only one target is active at a
13384 remote_state
= new_remote_state ();
13386 init_remote_ops ();
13387 add_target (&remote_ops
);
13389 init_extended_remote_ops ();
13390 add_target (&extended_remote_ops
);
13392 /* Hook into new objfile notification. */
13393 observer_attach_new_objfile (remote_new_objfile
);
13394 /* We're no longer interested in notification events of an inferior
13396 observer_attach_inferior_exit (discard_pending_stop_replies
);
13398 /* Set up signal handlers. */
13399 async_sigint_remote_token
=
13400 create_async_signal_handler (async_remote_interrupt
, NULL
);
13401 async_sigint_remote_twice_token
=
13402 create_async_signal_handler (async_remote_interrupt_twice
, NULL
);
13405 init_remote_threadtests ();
13408 stop_reply_queue
= QUEUE_alloc (stop_reply_p
, stop_reply_xfree
);
13409 /* set/show remote ... */
13411 add_prefix_cmd ("remote", class_maintenance
, set_remote_cmd
, _("\
13412 Remote protocol specific variables\n\
13413 Configure various remote-protocol specific variables such as\n\
13414 the packets being used"),
13415 &remote_set_cmdlist
, "set remote ",
13416 0 /* allow-unknown */, &setlist
);
13417 add_prefix_cmd ("remote", class_maintenance
, show_remote_cmd
, _("\
13418 Remote protocol specific variables\n\
13419 Configure various remote-protocol specific variables such as\n\
13420 the packets being used"),
13421 &remote_show_cmdlist
, "show remote ",
13422 0 /* allow-unknown */, &showlist
);
13424 add_cmd ("compare-sections", class_obscure
, compare_sections_command
, _("\
13425 Compare section data on target to the exec file.\n\
13426 Argument is a single section name (default: all loaded sections).\n\
13427 To compare only read-only loaded sections, specify the -r option."),
13430 add_cmd ("packet", class_maintenance
, packet_command
, _("\
13431 Send an arbitrary packet to a remote target.\n\
13432 maintenance packet TEXT\n\
13433 If GDB is talking to an inferior via the GDB serial protocol, then\n\
13434 this command sends the string TEXT to the inferior, and displays the\n\
13435 response packet. GDB supplies the initial `$' character, and the\n\
13436 terminating `#' character and checksum."),
13439 add_setshow_boolean_cmd ("remotebreak", no_class
, &remote_break
, _("\
13440 Set whether to send break if interrupted."), _("\
13441 Show whether to send break if interrupted."), _("\
13442 If set, a break, instead of a cntrl-c, is sent to the remote target."),
13443 set_remotebreak
, show_remotebreak
,
13444 &setlist
, &showlist
);
13445 cmd_name
= "remotebreak";
13446 cmd
= lookup_cmd (&cmd_name
, setlist
, "", -1, 1);
13447 deprecate_cmd (cmd
, "set remote interrupt-sequence");
13448 cmd_name
= "remotebreak"; /* needed because lookup_cmd updates the pointer */
13449 cmd
= lookup_cmd (&cmd_name
, showlist
, "", -1, 1);
13450 deprecate_cmd (cmd
, "show remote interrupt-sequence");
13452 add_setshow_enum_cmd ("interrupt-sequence", class_support
,
13453 interrupt_sequence_modes
, &interrupt_sequence_mode
,
13455 Set interrupt sequence to remote target."), _("\
13456 Show interrupt sequence to remote target."), _("\
13457 Valid value is \"Ctrl-C\", \"BREAK\" or \"BREAK-g\". The default is \"Ctrl-C\"."),
13458 NULL
, show_interrupt_sequence
,
13459 &remote_set_cmdlist
,
13460 &remote_show_cmdlist
);
13462 add_setshow_boolean_cmd ("interrupt-on-connect", class_support
,
13463 &interrupt_on_connect
, _("\
13464 Set whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \
13465 Show whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \
13466 If set, interrupt sequence is sent to remote target."),
13468 &remote_set_cmdlist
, &remote_show_cmdlist
);
13470 /* Install commands for configuring memory read/write packets. */
13472 add_cmd ("remotewritesize", no_class
, set_memory_write_packet_size
, _("\
13473 Set the maximum number of bytes per memory write packet (deprecated)."),
13475 add_cmd ("remotewritesize", no_class
, show_memory_write_packet_size
, _("\
13476 Show the maximum number of bytes per memory write packet (deprecated)."),
13478 add_cmd ("memory-write-packet-size", no_class
,
13479 set_memory_write_packet_size
, _("\
13480 Set the maximum number of bytes per memory-write packet.\n\
13481 Specify the number of bytes in a packet or 0 (zero) for the\n\
13482 default packet size. The actual limit is further reduced\n\
13483 dependent on the target. Specify ``fixed'' to disable the\n\
13484 further restriction and ``limit'' to enable that restriction."),
13485 &remote_set_cmdlist
);
13486 add_cmd ("memory-read-packet-size", no_class
,
13487 set_memory_read_packet_size
, _("\
13488 Set the maximum number of bytes per memory-read packet.\n\
13489 Specify the number of bytes in a packet or 0 (zero) for the\n\
13490 default packet size. The actual limit is further reduced\n\
13491 dependent on the target. Specify ``fixed'' to disable the\n\
13492 further restriction and ``limit'' to enable that restriction."),
13493 &remote_set_cmdlist
);
13494 add_cmd ("memory-write-packet-size", no_class
,
13495 show_memory_write_packet_size
,
13496 _("Show the maximum number of bytes per memory-write packet."),
13497 &remote_show_cmdlist
);
13498 add_cmd ("memory-read-packet-size", no_class
,
13499 show_memory_read_packet_size
,
13500 _("Show the maximum number of bytes per memory-read packet."),
13501 &remote_show_cmdlist
);
13503 add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class
,
13504 &remote_hw_watchpoint_limit
, _("\
13505 Set the maximum number of target hardware watchpoints."), _("\
13506 Show the maximum number of target hardware watchpoints."), _("\
13507 Specify a negative limit for unlimited."),
13508 NULL
, NULL
, /* FIXME: i18n: The maximum
13509 number of target hardware
13510 watchpoints is %s. */
13511 &remote_set_cmdlist
, &remote_show_cmdlist
);
13512 add_setshow_zinteger_cmd ("hardware-watchpoint-length-limit", no_class
,
13513 &remote_hw_watchpoint_length_limit
, _("\
13514 Set the maximum length (in bytes) of a target hardware watchpoint."), _("\
13515 Show the maximum length (in bytes) of a target hardware watchpoint."), _("\
13516 Specify a negative limit for unlimited."),
13517 NULL
, NULL
, /* FIXME: i18n: The maximum
13518 length (in bytes) of a target
13519 hardware watchpoint is %s. */
13520 &remote_set_cmdlist
, &remote_show_cmdlist
);
13521 add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class
,
13522 &remote_hw_breakpoint_limit
, _("\
13523 Set the maximum number of target hardware breakpoints."), _("\
13524 Show the maximum number of target hardware breakpoints."), _("\
13525 Specify a negative limit for unlimited."),
13526 NULL
, NULL
, /* FIXME: i18n: The maximum
13527 number of target hardware
13528 breakpoints is %s. */
13529 &remote_set_cmdlist
, &remote_show_cmdlist
);
13531 add_setshow_zuinteger_cmd ("remoteaddresssize", class_obscure
,
13532 &remote_address_size
, _("\
13533 Set the maximum size of the address (in bits) in a memory packet."), _("\
13534 Show the maximum size of the address (in bits) in a memory packet."), NULL
,
13536 NULL
, /* FIXME: i18n: */
13537 &setlist
, &showlist
);
13539 init_all_packet_configs ();
13541 add_packet_config_cmd (&remote_protocol_packets
[PACKET_X
],
13542 "X", "binary-download", 1);
13544 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vCont
],
13545 "vCont", "verbose-resume", 0);
13547 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QPassSignals
],
13548 "QPassSignals", "pass-signals", 0);
13550 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QProgramSignals
],
13551 "QProgramSignals", "program-signals", 0);
13553 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSymbol
],
13554 "qSymbol", "symbol-lookup", 0);
13556 add_packet_config_cmd (&remote_protocol_packets
[PACKET_P
],
13557 "P", "set-register", 1);
13559 add_packet_config_cmd (&remote_protocol_packets
[PACKET_p
],
13560 "p", "fetch-register", 1);
13562 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z0
],
13563 "Z0", "software-breakpoint", 0);
13565 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z1
],
13566 "Z1", "hardware-breakpoint", 0);
13568 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z2
],
13569 "Z2", "write-watchpoint", 0);
13571 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z3
],
13572 "Z3", "read-watchpoint", 0);
13574 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z4
],
13575 "Z4", "access-watchpoint", 0);
13577 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_auxv
],
13578 "qXfer:auxv:read", "read-aux-vector", 0);
13580 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_exec_file
],
13581 "qXfer:exec-file:read", "pid-to-exec-file", 0);
13583 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_features
],
13584 "qXfer:features:read", "target-features", 0);
13586 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_libraries
],
13587 "qXfer:libraries:read", "library-info", 0);
13589 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_libraries_svr4
],
13590 "qXfer:libraries-svr4:read", "library-info-svr4", 0);
13592 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_memory_map
],
13593 "qXfer:memory-map:read", "memory-map", 0);
13595 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_spu_read
],
13596 "qXfer:spu:read", "read-spu-object", 0);
13598 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_spu_write
],
13599 "qXfer:spu:write", "write-spu-object", 0);
13601 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_osdata
],
13602 "qXfer:osdata:read", "osdata", 0);
13604 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_threads
],
13605 "qXfer:threads:read", "threads", 0);
13607 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_siginfo_read
],
13608 "qXfer:siginfo:read", "read-siginfo-object", 0);
13610 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_siginfo_write
],
13611 "qXfer:siginfo:write", "write-siginfo-object", 0);
13613 add_packet_config_cmd
13614 (&remote_protocol_packets
[PACKET_qXfer_traceframe_info
],
13615 "qXfer:traceframe-info:read", "traceframe-info", 0);
13617 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_uib
],
13618 "qXfer:uib:read", "unwind-info-block", 0);
13620 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qGetTLSAddr
],
13621 "qGetTLSAddr", "get-thread-local-storage-address",
13624 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qGetTIBAddr
],
13625 "qGetTIBAddr", "get-thread-information-block-address",
13628 add_packet_config_cmd (&remote_protocol_packets
[PACKET_bc
],
13629 "bc", "reverse-continue", 0);
13631 add_packet_config_cmd (&remote_protocol_packets
[PACKET_bs
],
13632 "bs", "reverse-step", 0);
13634 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSupported
],
13635 "qSupported", "supported-packets", 0);
13637 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSearch_memory
],
13638 "qSearch:memory", "search-memory", 0);
13640 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qTStatus
],
13641 "qTStatus", "trace-status", 0);
13643 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_setfs
],
13644 "vFile:setfs", "hostio-setfs", 0);
13646 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_open
],
13647 "vFile:open", "hostio-open", 0);
13649 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_pread
],
13650 "vFile:pread", "hostio-pread", 0);
13652 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_pwrite
],
13653 "vFile:pwrite", "hostio-pwrite", 0);
13655 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_close
],
13656 "vFile:close", "hostio-close", 0);
13658 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_unlink
],
13659 "vFile:unlink", "hostio-unlink", 0);
13661 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_readlink
],
13662 "vFile:readlink", "hostio-readlink", 0);
13664 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_fstat
],
13665 "vFile:fstat", "hostio-fstat", 0);
13667 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vAttach
],
13668 "vAttach", "attach", 0);
13670 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vRun
],
13673 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QStartNoAckMode
],
13674 "QStartNoAckMode", "noack", 0);
13676 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vKill
],
13677 "vKill", "kill", 0);
13679 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qAttached
],
13680 "qAttached", "query-attached", 0);
13682 add_packet_config_cmd (&remote_protocol_packets
[PACKET_ConditionalTracepoints
],
13683 "ConditionalTracepoints",
13684 "conditional-tracepoints", 0);
13686 add_packet_config_cmd (&remote_protocol_packets
[PACKET_ConditionalBreakpoints
],
13687 "ConditionalBreakpoints",
13688 "conditional-breakpoints", 0);
13690 add_packet_config_cmd (&remote_protocol_packets
[PACKET_BreakpointCommands
],
13691 "BreakpointCommands",
13692 "breakpoint-commands", 0);
13694 add_packet_config_cmd (&remote_protocol_packets
[PACKET_FastTracepoints
],
13695 "FastTracepoints", "fast-tracepoints", 0);
13697 add_packet_config_cmd (&remote_protocol_packets
[PACKET_TracepointSource
],
13698 "TracepointSource", "TracepointSource", 0);
13700 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QAllow
],
13701 "QAllow", "allow", 0);
13703 add_packet_config_cmd (&remote_protocol_packets
[PACKET_StaticTracepoints
],
13704 "StaticTracepoints", "static-tracepoints", 0);
13706 add_packet_config_cmd (&remote_protocol_packets
[PACKET_InstallInTrace
],
13707 "InstallInTrace", "install-in-trace", 0);
13709 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_statictrace_read
],
13710 "qXfer:statictrace:read", "read-sdata-object", 0);
13712 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_fdpic
],
13713 "qXfer:fdpic:read", "read-fdpic-loadmap", 0);
13715 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QDisableRandomization
],
13716 "QDisableRandomization", "disable-randomization", 0);
13718 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QAgent
],
13719 "QAgent", "agent", 0);
13721 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QTBuffer_size
],
13722 "QTBuffer:size", "trace-buffer-size", 0);
13724 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Qbtrace_off
],
13725 "Qbtrace:off", "disable-btrace", 0);
13727 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Qbtrace_bts
],
13728 "Qbtrace:bts", "enable-btrace-bts", 0);
13730 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Qbtrace_pt
],
13731 "Qbtrace:pt", "enable-btrace-pt", 0);
13733 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_btrace
],
13734 "qXfer:btrace", "read-btrace", 0);
13736 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_btrace_conf
],
13737 "qXfer:btrace-conf", "read-btrace-conf", 0);
13739 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Qbtrace_conf_bts_size
],
13740 "Qbtrace-conf:bts:size", "btrace-conf-bts-size", 0);
13742 add_packet_config_cmd (&remote_protocol_packets
[PACKET_multiprocess_feature
],
13743 "multiprocess-feature", "multiprocess-feature", 0);
13745 add_packet_config_cmd (&remote_protocol_packets
[PACKET_swbreak_feature
],
13746 "swbreak-feature", "swbreak-feature", 0);
13748 add_packet_config_cmd (&remote_protocol_packets
[PACKET_hwbreak_feature
],
13749 "hwbreak-feature", "hwbreak-feature", 0);
13751 add_packet_config_cmd (&remote_protocol_packets
[PACKET_fork_event_feature
],
13752 "fork-event-feature", "fork-event-feature", 0);
13754 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vfork_event_feature
],
13755 "vfork-event-feature", "vfork-event-feature", 0);
13757 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Qbtrace_conf_pt_size
],
13758 "Qbtrace-conf:pt:size", "btrace-conf-pt-size", 0);
13760 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vContSupported
],
13761 "vContSupported", "verbose-resume-supported", 0);
13763 add_packet_config_cmd (&remote_protocol_packets
[PACKET_exec_event_feature
],
13764 "exec-event-feature", "exec-event-feature", 0);
13766 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vCtrlC
],
13767 "vCtrlC", "ctrl-c", 0);
13769 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QThreadEvents
],
13770 "QThreadEvents", "thread-events", 0);
13772 add_packet_config_cmd (&remote_protocol_packets
[PACKET_no_resumed
],
13773 "N stop reply", "no-resumed-stop-reply", 0);
13775 /* Assert that we've registered "set remote foo-packet" commands
13776 for all packet configs. */
13780 for (i
= 0; i
< PACKET_MAX
; i
++)
13782 /* Ideally all configs would have a command associated. Some
13783 still don't though. */
13788 case PACKET_QNonStop
:
13789 case PACKET_EnableDisableTracepoints_feature
:
13790 case PACKET_tracenz_feature
:
13791 case PACKET_DisconnectedTracing_feature
:
13792 case PACKET_augmented_libraries_svr4_read_feature
:
13794 /* Additions to this list need to be well justified:
13795 pre-existing packets are OK; new packets are not. */
13803 /* This catches both forgetting to add a config command, and
13804 forgetting to remove a packet from the exception list. */
13805 gdb_assert (excepted
== (remote_protocol_packets
[i
].name
== NULL
));
13809 /* Keep the old ``set remote Z-packet ...'' working. Each individual
13810 Z sub-packet has its own set and show commands, but users may
13811 have sets to this variable in their .gdbinit files (or in their
13813 add_setshow_auto_boolean_cmd ("Z-packet", class_obscure
,
13814 &remote_Z_packet_detect
, _("\
13815 Set use of remote protocol `Z' packets"), _("\
13816 Show use of remote protocol `Z' packets "), _("\
13817 When set, GDB will attempt to use the remote breakpoint and watchpoint\n\
13819 set_remote_protocol_Z_packet_cmd
,
13820 show_remote_protocol_Z_packet_cmd
,
13821 /* FIXME: i18n: Use of remote protocol
13822 `Z' packets is %s. */
13823 &remote_set_cmdlist
, &remote_show_cmdlist
);
13825 add_prefix_cmd ("remote", class_files
, remote_command
, _("\
13826 Manipulate files on the remote system\n\
13827 Transfer files to and from the remote target system."),
13828 &remote_cmdlist
, "remote ",
13829 0 /* allow-unknown */, &cmdlist
);
13831 add_cmd ("put", class_files
, remote_put_command
,
13832 _("Copy a local file to the remote system."),
13835 add_cmd ("get", class_files
, remote_get_command
,
13836 _("Copy a remote file to the local system."),
13839 add_cmd ("delete", class_files
, remote_delete_command
,
13840 _("Delete a remote file."),
13843 add_setshow_string_noescape_cmd ("exec-file", class_files
,
13844 &remote_exec_file_var
, _("\
13845 Set the remote pathname for \"run\""), _("\
13846 Show the remote pathname for \"run\""), NULL
,
13847 set_remote_exec_file
,
13848 show_remote_exec_file
,
13849 &remote_set_cmdlist
,
13850 &remote_show_cmdlist
);
13852 add_setshow_boolean_cmd ("range-stepping", class_run
,
13853 &use_range_stepping
, _("\
13854 Enable or disable range stepping."), _("\
13855 Show whether target-assisted range stepping is enabled."), _("\
13856 If on, and the target supports it, when stepping a source line, GDB\n\
13857 tells the target to step the corresponding range of addresses itself instead\n\
13858 of issuing multiple single-steps. This speeds up source level\n\
13859 stepping. If off, GDB always issues single-steps, even if range\n\
13860 stepping is supported by the target. The default is on."),
13861 set_range_stepping
,
13862 show_range_stepping
,
13866 /* Eventually initialize fileio. See fileio.c */
13867 initialize_remote_fileio (remote_set_cmdlist
, remote_show_cmdlist
);
13869 /* Take advantage of the fact that the TID field is not used, to tag
13870 special ptids with it set to != 0. */
13871 magic_null_ptid
= ptid_build (42000, -1, 1);
13872 not_sent_ptid
= ptid_build (42000, -2, 1);
13873 any_thread_ptid
= ptid_build (42000, 0, 1);
13875 target_buf_size
= 2048;
13876 target_buf
= (char *) xmalloc (target_buf_size
);