1 /* Remote target communications for serial-line targets in custom GDB protocol
3 Copyright (C) 1988-2016 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
20 /* See the GDB User Guide for details of the GDB remote protocol. */
30 /*#include "terminal.h" */
33 #include "gdb-stabs.h"
34 #include "gdbthread.h"
36 #include "remote-notif.h"
41 #include "cli/cli-decode.h"
42 #include "cli/cli-setshow.h"
43 #include "target-descriptions.h"
45 #include "filestuff.h"
50 #include "gdb_sys_time.h"
52 #include "event-loop.h"
53 #include "event-top.h"
59 #include "gdbcore.h" /* for exec_bfd */
61 #include "remote-fileio.h"
62 #include "gdb/fileio.h"
64 #include "xml-support.h"
66 #include "memory-map.h"
68 #include "tracepoint.h"
74 /* Temp hacks for tracepoint encoding migration. */
75 static char *target_buf
;
76 static long target_buf_size
;
78 /* Per-program-space data key. */
79 static const struct program_space_data
*remote_pspace_data
;
81 /* The variable registered as the control variable used by the
82 remote exec-file commands. While the remote exec-file setting is
83 per-program-space, the set/show machinery uses this as the
84 location of the remote exec-file value. */
85 static char *remote_exec_file_var
;
87 /* The size to align memory write packets, when practical. The protocol
88 does not guarantee any alignment, and gdb will generate short
89 writes and unaligned writes, but even as a best-effort attempt this
90 can improve bulk transfers. For instance, if a write is misaligned
91 relative to the target's data bus, the stub may need to make an extra
92 round trip fetching data from the target. This doesn't make a
93 huge difference, but it's easy to do, so we try to be helpful.
95 The alignment chosen is arbitrary; usually data bus width is
96 important here, not the possibly larger cache line size. */
97 enum { REMOTE_ALIGN_WRITES
= 16 };
99 /* Prototypes for local functions. */
100 static void async_cleanup_sigint_signal_handler (void *dummy
);
101 static int getpkt_sane (char **buf
, long *sizeof_buf
, int forever
);
102 static int getpkt_or_notif_sane (char **buf
, long *sizeof_buf
,
103 int forever
, int *is_notif
);
105 static void async_handle_remote_sigint (int);
106 static void async_handle_remote_sigint_twice (int);
108 static void remote_files_info (struct target_ops
*ignore
);
110 static void remote_prepare_to_store (struct target_ops
*self
,
111 struct regcache
*regcache
);
113 static void remote_open_1 (const char *, int, struct target_ops
*,
116 static void remote_close (struct target_ops
*self
);
120 static int remote_vkill (int pid
, struct remote_state
*rs
);
122 static void remote_kill_k (void);
124 static void remote_mourn (struct target_ops
*ops
);
126 static void extended_remote_restart (void);
128 static void remote_send (char **buf
, long *sizeof_buf_p
);
130 static int readchar (int timeout
);
132 static void remote_serial_write (const char *str
, int len
);
134 static void remote_kill (struct target_ops
*ops
);
136 static int remote_can_async_p (struct target_ops
*);
138 static int remote_is_async_p (struct target_ops
*);
140 static void remote_async (struct target_ops
*ops
, int enable
);
142 static void remote_thread_events (struct target_ops
*ops
, int enable
);
144 static void sync_remote_interrupt_twice (int signo
);
146 static void interrupt_query (void);
148 static void set_general_thread (struct ptid ptid
);
149 static void set_continue_thread (struct ptid ptid
);
151 static void get_offsets (void);
153 static void skip_frame (void);
155 static long read_frame (char **buf_p
, long *sizeof_buf
);
157 static int hexnumlen (ULONGEST num
);
159 static void init_remote_ops (void);
161 static void init_extended_remote_ops (void);
163 static void remote_stop (struct target_ops
*self
, ptid_t
);
165 static int stubhex (int ch
);
167 static int hexnumstr (char *, ULONGEST
);
169 static int hexnumnstr (char *, ULONGEST
, int);
171 static CORE_ADDR
remote_address_masked (CORE_ADDR
);
173 static void print_packet (const char *);
175 static void compare_sections_command (char *, int);
177 static void packet_command (char *, int);
179 static int stub_unpack_int (char *buff
, int fieldlength
);
181 static ptid_t
remote_current_thread (ptid_t oldptid
);
183 static int putpkt_binary (const char *buf
, int cnt
);
185 static void check_binary_download (CORE_ADDR addr
);
187 struct packet_config
;
189 static void show_packet_config_cmd (struct packet_config
*config
);
191 static void show_remote_protocol_packet_cmd (struct ui_file
*file
,
193 struct cmd_list_element
*c
,
196 static char *write_ptid (char *buf
, const char *endbuf
, ptid_t ptid
);
197 static ptid_t
read_ptid (char *buf
, char **obuf
);
199 static void remote_set_permissions (struct target_ops
*self
);
201 static int remote_get_trace_status (struct target_ops
*self
,
202 struct trace_status
*ts
);
204 static int remote_upload_tracepoints (struct target_ops
*self
,
205 struct uploaded_tp
**utpp
);
207 static int remote_upload_trace_state_variables (struct target_ops
*self
,
208 struct uploaded_tsv
**utsvp
);
210 static void remote_query_supported (void);
212 static void remote_check_symbols (void);
214 void _initialize_remote (void);
217 static void stop_reply_xfree (struct stop_reply
*);
218 static void remote_parse_stop_reply (char *, struct stop_reply
*);
219 static void push_stop_reply (struct stop_reply
*);
220 static void discard_pending_stop_replies_in_queue (struct remote_state
*);
221 static int peek_stop_reply (ptid_t ptid
);
223 struct threads_listing_context
;
224 static void remove_new_fork_children (struct threads_listing_context
*);
226 static void remote_async_inferior_event_handler (gdb_client_data
);
228 static void remote_terminal_ours (struct target_ops
*self
);
230 static int remote_read_description_p (struct target_ops
*target
);
232 static void remote_console_output (char *msg
);
234 static int remote_supports_cond_breakpoints (struct target_ops
*self
);
236 static int remote_can_run_breakpoint_commands (struct target_ops
*self
);
238 static void remote_btrace_reset (void);
240 static int stop_reply_queue_length (void);
242 static void readahead_cache_invalidate (void);
246 static struct cmd_list_element
*remote_cmdlist
;
248 /* For "set remote" and "show remote". */
250 static struct cmd_list_element
*remote_set_cmdlist
;
251 static struct cmd_list_element
*remote_show_cmdlist
;
253 /* Stub vCont actions support.
255 Each field is a boolean flag indicating whether the stub reports
256 support for the corresponding action. */
258 struct vCont_action_support
273 /* Controls whether GDB is willing to use range stepping. */
275 static int use_range_stepping
= 1;
277 #define OPAQUETHREADBYTES 8
279 /* a 64 bit opaque identifier */
280 typedef unsigned char threadref
[OPAQUETHREADBYTES
];
282 /* About this many threadisds fit in a packet. */
284 #define MAXTHREADLISTRESULTS 32
286 /* Data for the vFile:pread readahead cache. */
288 struct readahead_cache
290 /* The file descriptor for the file that is being cached. -1 if the
294 /* The offset into the file that the cache buffer corresponds
298 /* The buffer holding the cache contents. */
300 /* The buffer's size. We try to read as much as fits into a packet
304 /* Cache hit and miss counters. */
309 /* Description of the remote protocol state for the currently
310 connected target. This is per-target state, and independent of the
311 selected architecture. */
315 /* A buffer to use for incoming packets, and its current size. The
316 buffer is grown dynamically for larger incoming packets.
317 Outgoing packets may also be constructed in this buffer.
318 BUF_SIZE is always at least REMOTE_PACKET_SIZE;
319 REMOTE_PACKET_SIZE should be used to limit the length of outgoing
324 /* True if we're going through initial connection setup (finding out
325 about the remote side's threads, relocating symbols, etc.). */
328 /* If we negotiated packet size explicitly (and thus can bypass
329 heuristics for the largest packet size that will not overflow
330 a buffer in the stub), this will be set to that packet size.
331 Otherwise zero, meaning to use the guessed size. */
332 long explicit_packet_size
;
334 /* remote_wait is normally called when the target is running and
335 waits for a stop reply packet. But sometimes we need to call it
336 when the target is already stopped. We can send a "?" packet
337 and have remote_wait read the response. Or, if we already have
338 the response, we can stash it in BUF and tell remote_wait to
339 skip calling getpkt. This flag is set when BUF contains a
340 stop reply packet and the target is not waiting. */
341 int cached_wait_status
;
343 /* True, if in no ack mode. That is, neither GDB nor the stub will
344 expect acks from each other. The connection is assumed to be
348 /* True if we're connected in extended remote mode. */
351 /* True if we resumed the target and we're waiting for the target to
352 stop. In the mean time, we can't start another command/query.
353 The remote server wouldn't be ready to process it, so we'd
354 timeout waiting for a reply that would never come and eventually
355 we'd close the connection. This can happen in asynchronous mode
356 because we allow GDB commands while the target is running. */
357 int waiting_for_stop_reply
;
359 /* The status of the stub support for the various vCont actions. */
360 struct vCont_action_support supports_vCont
;
362 /* Nonzero if the user has pressed Ctrl-C, but the target hasn't
363 responded to that. */
366 /* Descriptor for I/O to remote machine. Initialize it to NULL so that
367 remote_open knows that we don't have a file open when the program
369 struct serial
*remote_desc
;
371 /* These are the threads which we last sent to the remote system. The
372 TID member will be -1 for all or -2 for not sent yet. */
373 ptid_t general_thread
;
374 ptid_t continue_thread
;
376 /* This is the traceframe which we last selected on the remote system.
377 It will be -1 if no traceframe is selected. */
378 int remote_traceframe_number
;
380 char *last_pass_packet
;
382 /* The last QProgramSignals packet sent to the target. We bypass
383 sending a new program signals list down to the target if the new
384 packet is exactly the same as the last we sent. IOW, we only let
385 the target know about program signals list changes. */
386 char *last_program_signals_packet
;
388 enum gdb_signal last_sent_signal
;
392 char *finished_object
;
393 char *finished_annex
;
394 ULONGEST finished_offset
;
396 /* Should we try the 'ThreadInfo' query packet?
398 This variable (NOT available to the user: auto-detect only!)
399 determines whether GDB will use the new, simpler "ThreadInfo"
400 query or the older, more complex syntax for thread queries.
401 This is an auto-detect variable (set to true at each connect,
402 and set to false when the target fails to recognize it). */
403 int use_threadinfo_query
;
404 int use_threadextra_query
;
406 threadref echo_nextthread
;
407 threadref nextthread
;
408 threadref resultthreadlist
[MAXTHREADLISTRESULTS
];
410 /* The state of remote notification. */
411 struct remote_notif_state
*notif_state
;
413 /* The branch trace configuration. */
414 struct btrace_config btrace_config
;
416 /* The argument to the last "vFile:setfs:" packet we sent, used
417 to avoid sending repeated unnecessary "vFile:setfs:" packets.
418 Initialized to -1 to indicate that no "vFile:setfs:" packet
419 has yet been sent. */
422 /* A readahead cache for vFile:pread. Often, reading a binary
423 involves a sequence of small reads. E.g., when parsing an ELF
424 file. A readahead cache helps mostly the case of remote
425 debugging on a connection with higher latency, due to the
426 request/reply nature of the RSP. We only cache data for a single
427 file descriptor at a time. */
428 struct readahead_cache readahead_cache
;
431 /* Private data that we'll store in (struct thread_info)->private. */
432 struct private_thread_info
438 /* Whether the target stopped for a breakpoint/watchpoint. */
439 enum target_stop_reason stop_reason
;
441 /* This is set to the data address of the access causing the target
442 to stop for a watchpoint. */
443 CORE_ADDR watch_data_address
;
447 free_private_thread_info (struct private_thread_info
*info
)
454 /* This data could be associated with a target, but we do not always
455 have access to the current target when we need it, so for now it is
456 static. This will be fine for as long as only one target is in use
458 static struct remote_state
*remote_state
;
460 static struct remote_state
*
461 get_remote_state_raw (void)
466 /* Allocate a new struct remote_state with xmalloc, initialize it, and
469 static struct remote_state
*
470 new_remote_state (void)
472 struct remote_state
*result
= XCNEW (struct remote_state
);
474 /* The default buffer size is unimportant; it will be expanded
475 whenever a larger buffer is needed. */
476 result
->buf_size
= 400;
477 result
->buf
= (char *) xmalloc (result
->buf_size
);
478 result
->remote_traceframe_number
= -1;
479 result
->last_sent_signal
= GDB_SIGNAL_0
;
485 /* Description of the remote protocol for a given architecture. */
489 long offset
; /* Offset into G packet. */
490 long regnum
; /* GDB's internal register number. */
491 LONGEST pnum
; /* Remote protocol register number. */
492 int in_g_packet
; /* Always part of G packet. */
493 /* long size in bytes; == register_size (target_gdbarch (), regnum);
495 /* char *name; == gdbarch_register_name (target_gdbarch (), regnum);
499 struct remote_arch_state
501 /* Description of the remote protocol registers. */
502 long sizeof_g_packet
;
504 /* Description of the remote protocol registers indexed by REGNUM
505 (making an array gdbarch_num_regs in size). */
506 struct packet_reg
*regs
;
508 /* This is the size (in chars) of the first response to the ``g''
509 packet. It is used as a heuristic when determining the maximum
510 size of memory-read and memory-write packets. A target will
511 typically only reserve a buffer large enough to hold the ``g''
512 packet. The size does not include packet overhead (headers and
514 long actual_register_packet_size
;
516 /* This is the maximum size (in chars) of a non read/write packet.
517 It is also used as a cap on the size of read/write packets. */
518 long remote_packet_size
;
521 /* Utility: generate error from an incoming stub packet. */
523 trace_error (char *buf
)
526 return; /* not an error msg */
529 case '1': /* malformed packet error */
530 if (*++buf
== '0') /* general case: */
531 error (_("remote.c: error in outgoing packet."));
533 error (_("remote.c: error in outgoing packet at field #%ld."),
534 strtol (buf
, NULL
, 16));
536 error (_("Target returns error code '%s'."), buf
);
540 /* Utility: wait for reply from stub, while accepting "O" packets. */
542 remote_get_noisy_reply (char **buf_p
,
545 do /* Loop on reply from remote stub. */
549 QUIT
; /* Allow user to bail out with ^C. */
550 getpkt (buf_p
, sizeof_buf
, 0);
554 else if (startswith (buf
, "qRelocInsn:"))
557 CORE_ADDR from
, to
, org_to
;
559 int adjusted_size
= 0;
562 p
= buf
+ strlen ("qRelocInsn:");
563 pp
= unpack_varlen_hex (p
, &ul
);
565 error (_("invalid qRelocInsn packet: %s"), buf
);
569 unpack_varlen_hex (p
, &ul
);
576 gdbarch_relocate_instruction (target_gdbarch (), &to
, from
);
579 CATCH (ex
, RETURN_MASK_ALL
)
581 if (ex
.error
== MEMORY_ERROR
)
583 /* Propagate memory errors silently back to the
584 target. The stub may have limited the range of
585 addresses we can write to, for example. */
589 /* Something unexpectedly bad happened. Be verbose
590 so we can tell what, and propagate the error back
591 to the stub, so it doesn't get stuck waiting for
593 exception_fprintf (gdb_stderr
, ex
,
594 _("warning: relocating instruction: "));
602 adjusted_size
= to
- org_to
;
604 xsnprintf (buf
, *sizeof_buf
, "qRelocInsn:%x", adjusted_size
);
608 else if (buf
[0] == 'O' && buf
[1] != 'K')
609 remote_console_output (buf
+ 1); /* 'O' message from stub */
611 return buf
; /* Here's the actual reply. */
616 /* Handle for retreving the remote protocol data from gdbarch. */
617 static struct gdbarch_data
*remote_gdbarch_data_handle
;
619 static struct remote_arch_state
*
620 get_remote_arch_state (void)
622 gdb_assert (target_gdbarch () != NULL
);
623 return ((struct remote_arch_state
*)
624 gdbarch_data (target_gdbarch (), remote_gdbarch_data_handle
));
627 /* Fetch the global remote target state. */
629 static struct remote_state
*
630 get_remote_state (void)
632 /* Make sure that the remote architecture state has been
633 initialized, because doing so might reallocate rs->buf. Any
634 function which calls getpkt also needs to be mindful of changes
635 to rs->buf, but this call limits the number of places which run
637 get_remote_arch_state ();
639 return get_remote_state_raw ();
642 /* Cleanup routine for the remote module's pspace data. */
645 remote_pspace_data_cleanup (struct program_space
*pspace
, void *arg
)
647 char *remote_exec_file
= (char *) arg
;
649 xfree (remote_exec_file
);
652 /* Fetch the remote exec-file from the current program space. */
655 get_remote_exec_file (void)
657 char *remote_exec_file
;
660 = (char *) program_space_data (current_program_space
,
662 if (remote_exec_file
== NULL
)
665 return remote_exec_file
;
668 /* Set the remote exec file for PSPACE. */
671 set_pspace_remote_exec_file (struct program_space
*pspace
,
672 char *remote_exec_file
)
674 char *old_file
= (char *) program_space_data (pspace
, remote_pspace_data
);
677 set_program_space_data (pspace
, remote_pspace_data
,
678 xstrdup (remote_exec_file
));
681 /* The "set/show remote exec-file" set command hook. */
684 set_remote_exec_file (char *ignored
, int from_tty
,
685 struct cmd_list_element
*c
)
687 gdb_assert (remote_exec_file_var
!= NULL
);
688 set_pspace_remote_exec_file (current_program_space
, remote_exec_file_var
);
691 /* The "set/show remote exec-file" show command hook. */
694 show_remote_exec_file (struct ui_file
*file
, int from_tty
,
695 struct cmd_list_element
*cmd
, const char *value
)
697 fprintf_filtered (file
, "%s\n", remote_exec_file_var
);
701 compare_pnums (const void *lhs_
, const void *rhs_
)
703 const struct packet_reg
* const *lhs
704 = (const struct packet_reg
* const *) lhs_
;
705 const struct packet_reg
* const *rhs
706 = (const struct packet_reg
* const *) rhs_
;
708 if ((*lhs
)->pnum
< (*rhs
)->pnum
)
710 else if ((*lhs
)->pnum
== (*rhs
)->pnum
)
717 map_regcache_remote_table (struct gdbarch
*gdbarch
, struct packet_reg
*regs
)
719 int regnum
, num_remote_regs
, offset
;
720 struct packet_reg
**remote_regs
;
722 for (regnum
= 0; regnum
< gdbarch_num_regs (gdbarch
); regnum
++)
724 struct packet_reg
*r
= ®s
[regnum
];
726 if (register_size (gdbarch
, regnum
) == 0)
727 /* Do not try to fetch zero-sized (placeholder) registers. */
730 r
->pnum
= gdbarch_remote_register_number (gdbarch
, regnum
);
735 /* Define the g/G packet format as the contents of each register
736 with a remote protocol number, in order of ascending protocol
739 remote_regs
= XALLOCAVEC (struct packet_reg
*, gdbarch_num_regs (gdbarch
));
740 for (num_remote_regs
= 0, regnum
= 0;
741 regnum
< gdbarch_num_regs (gdbarch
);
743 if (regs
[regnum
].pnum
!= -1)
744 remote_regs
[num_remote_regs
++] = ®s
[regnum
];
746 qsort (remote_regs
, num_remote_regs
, sizeof (struct packet_reg
*),
749 for (regnum
= 0, offset
= 0; regnum
< num_remote_regs
; regnum
++)
751 remote_regs
[regnum
]->in_g_packet
= 1;
752 remote_regs
[regnum
]->offset
= offset
;
753 offset
+= register_size (gdbarch
, remote_regs
[regnum
]->regnum
);
759 /* Given the architecture described by GDBARCH, return the remote
760 protocol register's number and the register's offset in the g/G
761 packets of GDB register REGNUM, in PNUM and POFFSET respectively.
762 If the target does not have a mapping for REGNUM, return false,
763 otherwise, return true. */
766 remote_register_number_and_offset (struct gdbarch
*gdbarch
, int regnum
,
767 int *pnum
, int *poffset
)
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_QCatchSyscalls
,
1396 PACKET_QProgramSignals
,
1398 PACKET_qSearch_memory
,
1401 PACKET_QStartNoAckMode
,
1403 PACKET_qXfer_siginfo_read
,
1404 PACKET_qXfer_siginfo_write
,
1407 /* Support for conditional tracepoints. */
1408 PACKET_ConditionalTracepoints
,
1410 /* Support for target-side breakpoint conditions. */
1411 PACKET_ConditionalBreakpoints
,
1413 /* Support for target-side breakpoint commands. */
1414 PACKET_BreakpointCommands
,
1416 /* Support for fast tracepoints. */
1417 PACKET_FastTracepoints
,
1419 /* Support for static tracepoints. */
1420 PACKET_StaticTracepoints
,
1422 /* Support for installing tracepoints while a trace experiment is
1424 PACKET_InstallInTrace
,
1428 PACKET_TracepointSource
,
1431 PACKET_QDisableRandomization
,
1433 PACKET_QTBuffer_size
,
1437 PACKET_qXfer_btrace
,
1439 /* Support for the QNonStop packet. */
1442 /* Support for the QThreadEvents packet. */
1443 PACKET_QThreadEvents
,
1445 /* Support for multi-process extensions. */
1446 PACKET_multiprocess_feature
,
1448 /* Support for enabling and disabling tracepoints while a trace
1449 experiment is running. */
1450 PACKET_EnableDisableTracepoints_feature
,
1452 /* Support for collecting strings using the tracenz bytecode. */
1453 PACKET_tracenz_feature
,
1455 /* Support for continuing to run a trace experiment while GDB is
1457 PACKET_DisconnectedTracing_feature
,
1459 /* Support for qXfer:libraries-svr4:read with a non-empty annex. */
1460 PACKET_augmented_libraries_svr4_read_feature
,
1462 /* Support for the qXfer:btrace-conf:read packet. */
1463 PACKET_qXfer_btrace_conf
,
1465 /* Support for the Qbtrace-conf:bts:size packet. */
1466 PACKET_Qbtrace_conf_bts_size
,
1468 /* Support for swbreak+ feature. */
1469 PACKET_swbreak_feature
,
1471 /* Support for hwbreak+ feature. */
1472 PACKET_hwbreak_feature
,
1474 /* Support for fork events. */
1475 PACKET_fork_event_feature
,
1477 /* Support for vfork events. */
1478 PACKET_vfork_event_feature
,
1480 /* Support for the Qbtrace-conf:pt:size packet. */
1481 PACKET_Qbtrace_conf_pt_size
,
1483 /* Support for exec events. */
1484 PACKET_exec_event_feature
,
1486 /* Support for query supported vCont actions. */
1487 PACKET_vContSupported
,
1489 /* Support remote CTRL-C. */
1492 /* Support TARGET_WAITKIND_NO_RESUMED. */
1498 static struct packet_config remote_protocol_packets
[PACKET_MAX
];
1500 /* Returns the packet's corresponding "set remote foo-packet" command
1501 state. See struct packet_config for more details. */
1503 static enum auto_boolean
1504 packet_set_cmd_state (int packet
)
1506 return remote_protocol_packets
[packet
].detect
;
1509 /* Returns whether a given packet or feature is supported. This takes
1510 into account the state of the corresponding "set remote foo-packet"
1511 command, which may be used to bypass auto-detection. */
1513 static enum packet_support
1514 packet_config_support (struct packet_config
*config
)
1516 switch (config
->detect
)
1518 case AUTO_BOOLEAN_TRUE
:
1519 return PACKET_ENABLE
;
1520 case AUTO_BOOLEAN_FALSE
:
1521 return PACKET_DISABLE
;
1522 case AUTO_BOOLEAN_AUTO
:
1523 return config
->support
;
1525 gdb_assert_not_reached (_("bad switch"));
1529 /* Same as packet_config_support, but takes the packet's enum value as
1532 static enum packet_support
1533 packet_support (int packet
)
1535 struct packet_config
*config
= &remote_protocol_packets
[packet
];
1537 return packet_config_support (config
);
1541 show_remote_protocol_packet_cmd (struct ui_file
*file
, int from_tty
,
1542 struct cmd_list_element
*c
,
1545 struct packet_config
*packet
;
1547 for (packet
= remote_protocol_packets
;
1548 packet
< &remote_protocol_packets
[PACKET_MAX
];
1551 if (&packet
->detect
== c
->var
)
1553 show_packet_config_cmd (packet
);
1557 internal_error (__FILE__
, __LINE__
, _("Could not find config for %s"),
1561 /* Should we try one of the 'Z' requests? */
1565 Z_PACKET_SOFTWARE_BP
,
1566 Z_PACKET_HARDWARE_BP
,
1573 /* For compatibility with older distributions. Provide a ``set remote
1574 Z-packet ...'' command that updates all the Z packet types. */
1576 static enum auto_boolean remote_Z_packet_detect
;
1579 set_remote_protocol_Z_packet_cmd (char *args
, int from_tty
,
1580 struct cmd_list_element
*c
)
1584 for (i
= 0; i
< NR_Z_PACKET_TYPES
; i
++)
1585 remote_protocol_packets
[PACKET_Z0
+ i
].detect
= remote_Z_packet_detect
;
1589 show_remote_protocol_Z_packet_cmd (struct ui_file
*file
, int from_tty
,
1590 struct cmd_list_element
*c
,
1595 for (i
= 0; i
< NR_Z_PACKET_TYPES
; i
++)
1597 show_packet_config_cmd (&remote_protocol_packets
[PACKET_Z0
+ i
]);
1601 /* Returns true if the multi-process extensions are in effect. */
1604 remote_multi_process_p (struct remote_state
*rs
)
1606 return packet_support (PACKET_multiprocess_feature
) == PACKET_ENABLE
;
1609 /* Returns true if fork events are supported. */
1612 remote_fork_event_p (struct remote_state
*rs
)
1614 return packet_support (PACKET_fork_event_feature
) == PACKET_ENABLE
;
1617 /* Returns true if vfork events are supported. */
1620 remote_vfork_event_p (struct remote_state
*rs
)
1622 return packet_support (PACKET_vfork_event_feature
) == PACKET_ENABLE
;
1625 /* Returns true if exec events are supported. */
1628 remote_exec_event_p (struct remote_state
*rs
)
1630 return packet_support (PACKET_exec_event_feature
) == PACKET_ENABLE
;
1633 /* Insert fork catchpoint target routine. If fork events are enabled
1634 then return success, nothing more to do. */
1637 remote_insert_fork_catchpoint (struct target_ops
*ops
, int pid
)
1639 struct remote_state
*rs
= get_remote_state ();
1641 return !remote_fork_event_p (rs
);
1644 /* Remove fork catchpoint target routine. Nothing to do, just
1648 remote_remove_fork_catchpoint (struct target_ops
*ops
, int pid
)
1653 /* Insert vfork catchpoint target routine. If vfork events are enabled
1654 then return success, nothing more to do. */
1657 remote_insert_vfork_catchpoint (struct target_ops
*ops
, int pid
)
1659 struct remote_state
*rs
= get_remote_state ();
1661 return !remote_vfork_event_p (rs
);
1664 /* Remove vfork catchpoint target routine. Nothing to do, just
1668 remote_remove_vfork_catchpoint (struct target_ops
*ops
, int pid
)
1673 /* Insert exec catchpoint target routine. If exec events are
1674 enabled, just return success. */
1677 remote_insert_exec_catchpoint (struct target_ops
*ops
, int pid
)
1679 struct remote_state
*rs
= get_remote_state ();
1681 return !remote_exec_event_p (rs
);
1684 /* Remove exec catchpoint target routine. Nothing to do, just
1688 remote_remove_exec_catchpoint (struct target_ops
*ops
, int pid
)
1693 /* Tokens for use by the asynchronous signal handlers for SIGINT. */
1694 static struct async_signal_handler
*async_sigint_remote_twice_token
;
1695 static struct async_signal_handler
*async_sigint_remote_token
;
1698 /* Asynchronous signal handle registered as event loop source for
1699 when we have pending events ready to be passed to the core. */
1701 static struct async_event_handler
*remote_async_inferior_event_token
;
1705 static ptid_t magic_null_ptid
;
1706 static ptid_t not_sent_ptid
;
1707 static ptid_t any_thread_ptid
;
1709 /* Find out if the stub attached to PID (and hence GDB should offer to
1710 detach instead of killing it when bailing out). */
1713 remote_query_attached (int pid
)
1715 struct remote_state
*rs
= get_remote_state ();
1716 size_t size
= get_remote_packet_size ();
1718 if (packet_support (PACKET_qAttached
) == PACKET_DISABLE
)
1721 if (remote_multi_process_p (rs
))
1722 xsnprintf (rs
->buf
, size
, "qAttached:%x", pid
);
1724 xsnprintf (rs
->buf
, size
, "qAttached");
1727 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1729 switch (packet_ok (rs
->buf
,
1730 &remote_protocol_packets
[PACKET_qAttached
]))
1733 if (strcmp (rs
->buf
, "1") == 0)
1737 warning (_("Remote failure reply: %s"), rs
->buf
);
1739 case PACKET_UNKNOWN
:
1746 /* Add PID to GDB's inferior table. If FAKE_PID_P is true, then PID
1747 has been invented by GDB, instead of reported by the target. Since
1748 we can be connected to a remote system before before knowing about
1749 any inferior, mark the target with execution when we find the first
1750 inferior. If ATTACHED is 1, then we had just attached to this
1751 inferior. If it is 0, then we just created this inferior. If it
1752 is -1, then try querying the remote stub to find out if it had
1753 attached to the inferior or not. If TRY_OPEN_EXEC is true then
1754 attempt to open this inferior's executable as the main executable
1755 if no main executable is open already. */
1757 static struct inferior
*
1758 remote_add_inferior (int fake_pid_p
, int pid
, int attached
,
1761 struct inferior
*inf
;
1763 /* Check whether this process we're learning about is to be
1764 considered attached, or if is to be considered to have been
1765 spawned by the stub. */
1767 attached
= remote_query_attached (pid
);
1769 if (gdbarch_has_global_solist (target_gdbarch ()))
1771 /* If the target shares code across all inferiors, then every
1772 attach adds a new inferior. */
1773 inf
= add_inferior (pid
);
1775 /* ... and every inferior is bound to the same program space.
1776 However, each inferior may still have its own address
1778 inf
->aspace
= maybe_new_address_space ();
1779 inf
->pspace
= current_program_space
;
1783 /* In the traditional debugging scenario, there's a 1-1 match
1784 between program/address spaces. We simply bind the inferior
1785 to the program space's address space. */
1786 inf
= current_inferior ();
1787 inferior_appeared (inf
, pid
);
1790 inf
->attach_flag
= attached
;
1791 inf
->fake_pid_p
= fake_pid_p
;
1793 /* If no main executable is currently open then attempt to
1794 open the file that was executed to create this inferior. */
1795 if (try_open_exec
&& get_exec_file (0) == NULL
)
1796 exec_file_locate_attach (pid
, 1);
1801 /* Add thread PTID to GDB's thread list. Tag it as executing/running
1802 according to RUNNING. */
1805 remote_add_thread (ptid_t ptid
, int running
)
1807 struct remote_state
*rs
= get_remote_state ();
1809 /* GDB historically didn't pull threads in the initial connection
1810 setup. If the remote target doesn't even have a concept of
1811 threads (e.g., a bare-metal target), even if internally we
1812 consider that a single-threaded target, mentioning a new thread
1813 might be confusing to the user. Be silent then, preserving the
1814 age old behavior. */
1815 if (rs
->starting_up
)
1816 add_thread_silent (ptid
);
1820 set_executing (ptid
, running
);
1821 set_running (ptid
, running
);
1824 /* Come here when we learn about a thread id from the remote target.
1825 It may be the first time we hear about such thread, so take the
1826 opportunity to add it to GDB's thread list. In case this is the
1827 first time we're noticing its corresponding inferior, add it to
1828 GDB's inferior list as well. */
1831 remote_notice_new_inferior (ptid_t currthread
, int running
)
1833 /* If this is a new thread, add it to GDB's thread list.
1834 If we leave it up to WFI to do this, bad things will happen. */
1836 if (in_thread_list (currthread
) && is_exited (currthread
))
1838 /* We're seeing an event on a thread id we knew had exited.
1839 This has to be a new thread reusing the old id. Add it. */
1840 remote_add_thread (currthread
, running
);
1844 if (!in_thread_list (currthread
))
1846 struct inferior
*inf
= NULL
;
1847 int pid
= ptid_get_pid (currthread
);
1849 if (ptid_is_pid (inferior_ptid
)
1850 && pid
== ptid_get_pid (inferior_ptid
))
1852 /* inferior_ptid has no thread member yet. This can happen
1853 with the vAttach -> remote_wait,"TAAthread:" path if the
1854 stub doesn't support qC. This is the first stop reported
1855 after an attach, so this is the main thread. Update the
1856 ptid in the thread list. */
1857 if (in_thread_list (pid_to_ptid (pid
)))
1858 thread_change_ptid (inferior_ptid
, currthread
);
1861 remote_add_thread (currthread
, running
);
1862 inferior_ptid
= currthread
;
1867 if (ptid_equal (magic_null_ptid
, inferior_ptid
))
1869 /* inferior_ptid is not set yet. This can happen with the
1870 vRun -> remote_wait,"TAAthread:" path if the stub
1871 doesn't support qC. This is the first stop reported
1872 after an attach, so this is the main thread. Update the
1873 ptid in the thread list. */
1874 thread_change_ptid (inferior_ptid
, currthread
);
1878 /* When connecting to a target remote, or to a target
1879 extended-remote which already was debugging an inferior, we
1880 may not know about it yet. Add it before adding its child
1881 thread, so notifications are emitted in a sensible order. */
1882 if (!in_inferior_list (ptid_get_pid (currthread
)))
1884 struct remote_state
*rs
= get_remote_state ();
1885 int fake_pid_p
= !remote_multi_process_p (rs
);
1887 inf
= remote_add_inferior (fake_pid_p
,
1888 ptid_get_pid (currthread
), -1, 1);
1891 /* This is really a new thread. Add it. */
1892 remote_add_thread (currthread
, running
);
1894 /* If we found a new inferior, let the common code do whatever
1895 it needs to with it (e.g., read shared libraries, insert
1896 breakpoints), unless we're just setting up an all-stop
1900 struct remote_state
*rs
= get_remote_state ();
1902 if (!rs
->starting_up
)
1903 notice_new_inferior (currthread
, running
, 0);
1908 /* Return the private thread data, creating it if necessary. */
1910 static struct private_thread_info
*
1911 demand_private_info (ptid_t ptid
)
1913 struct thread_info
*info
= find_thread_ptid (ptid
);
1919 info
->priv
= XNEW (struct private_thread_info
);
1920 info
->private_dtor
= free_private_thread_info
;
1921 info
->priv
->core
= -1;
1922 info
->priv
->extra
= NULL
;
1923 info
->priv
->name
= NULL
;
1929 /* Call this function as a result of
1930 1) A halt indication (T packet) containing a thread id
1931 2) A direct query of currthread
1932 3) Successful execution of set thread */
1935 record_currthread (struct remote_state
*rs
, ptid_t currthread
)
1937 rs
->general_thread
= currthread
;
1940 /* If 'QPassSignals' is supported, tell the remote stub what signals
1941 it can simply pass through to the inferior without reporting. */
1944 remote_pass_signals (struct target_ops
*self
,
1945 int numsigs
, unsigned char *pass_signals
)
1947 if (packet_support (PACKET_QPassSignals
) != PACKET_DISABLE
)
1949 char *pass_packet
, *p
;
1951 struct remote_state
*rs
= get_remote_state ();
1953 gdb_assert (numsigs
< 256);
1954 for (i
= 0; i
< numsigs
; i
++)
1956 if (pass_signals
[i
])
1959 pass_packet
= (char *) xmalloc (count
* 3 + strlen ("QPassSignals:") + 1);
1960 strcpy (pass_packet
, "QPassSignals:");
1961 p
= pass_packet
+ strlen (pass_packet
);
1962 for (i
= 0; i
< numsigs
; i
++)
1964 if (pass_signals
[i
])
1967 *p
++ = tohex (i
>> 4);
1968 *p
++ = tohex (i
& 15);
1977 if (!rs
->last_pass_packet
|| strcmp (rs
->last_pass_packet
, pass_packet
))
1979 putpkt (pass_packet
);
1980 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1981 packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_QPassSignals
]);
1982 if (rs
->last_pass_packet
)
1983 xfree (rs
->last_pass_packet
);
1984 rs
->last_pass_packet
= pass_packet
;
1987 xfree (pass_packet
);
1991 /* If 'QCatchSyscalls' is supported, tell the remote stub
1992 to report syscalls to GDB. */
1995 remote_set_syscall_catchpoint (struct target_ops
*self
,
1996 int pid
, int needed
, int any_count
,
1997 int table_size
, int *table
)
2000 enum packet_result result
;
2003 if (packet_support (PACKET_QCatchSyscalls
) == PACKET_DISABLE
)
2005 /* Not supported. */
2009 if (needed
&& !any_count
)
2013 /* Count how many syscalls are to be caught (table[sysno] != 0). */
2014 for (i
= 0; i
< table_size
; i
++)
2023 fprintf_unfiltered (gdb_stdlog
,
2024 "remote_set_syscall_catchpoint "
2025 "pid %d needed %d any_count %d n_sysno %d\n",
2026 pid
, needed
, any_count
, n_sysno
);
2031 /* Prepare a packet with the sysno list, assuming max 8+1
2032 characters for a sysno. If the resulting packet size is too
2033 big, fallback on the non-selective packet. */
2034 const int maxpktsz
= strlen ("QCatchSyscalls:1") + n_sysno
* 9 + 1;
2036 catch_packet
= (char *) xmalloc (maxpktsz
);
2037 strcpy (catch_packet
, "QCatchSyscalls:1");
2046 /* Add in catch_packet each syscall to be caught (table[i] != 0). */
2047 for (i
= 0; i
< table_size
; i
++)
2050 p
+= xsnprintf (p
, catch_packet
+ maxpktsz
- p
, ";%x", i
);
2053 if (strlen (catch_packet
) > get_remote_packet_size ())
2055 /* catch_packet too big. Fallback to less efficient
2056 non selective mode, with GDB doing the filtering. */
2057 catch_packet
[sizeof ("QCatchSyscalls:1") - 1] = 0;
2061 catch_packet
= xstrdup ("QCatchSyscalls:0");
2064 struct cleanup
*old_chain
= make_cleanup (xfree
, catch_packet
);
2065 struct remote_state
*rs
= get_remote_state ();
2067 putpkt (catch_packet
);
2068 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2069 result
= packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_QCatchSyscalls
]);
2070 do_cleanups (old_chain
);
2071 if (result
== PACKET_OK
)
2078 /* If 'QProgramSignals' is supported, tell the remote stub what
2079 signals it should pass through to the inferior when detaching. */
2082 remote_program_signals (struct target_ops
*self
,
2083 int numsigs
, unsigned char *signals
)
2085 if (packet_support (PACKET_QProgramSignals
) != PACKET_DISABLE
)
2089 struct remote_state
*rs
= get_remote_state ();
2091 gdb_assert (numsigs
< 256);
2092 for (i
= 0; i
< numsigs
; i
++)
2097 packet
= (char *) xmalloc (count
* 3 + strlen ("QProgramSignals:") + 1);
2098 strcpy (packet
, "QProgramSignals:");
2099 p
= packet
+ strlen (packet
);
2100 for (i
= 0; i
< numsigs
; i
++)
2102 if (signal_pass_state (i
))
2105 *p
++ = tohex (i
>> 4);
2106 *p
++ = tohex (i
& 15);
2115 if (!rs
->last_program_signals_packet
2116 || strcmp (rs
->last_program_signals_packet
, packet
) != 0)
2119 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2120 packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_QProgramSignals
]);
2121 xfree (rs
->last_program_signals_packet
);
2122 rs
->last_program_signals_packet
= packet
;
2129 /* If PTID is MAGIC_NULL_PTID, don't set any thread. If PTID is
2130 MINUS_ONE_PTID, set the thread to -1, so the stub returns the
2131 thread. If GEN is set, set the general thread, if not, then set
2132 the step/continue thread. */
2134 set_thread (struct ptid ptid
, int gen
)
2136 struct remote_state
*rs
= get_remote_state ();
2137 ptid_t state
= gen
? rs
->general_thread
: rs
->continue_thread
;
2138 char *buf
= rs
->buf
;
2139 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
2141 if (ptid_equal (state
, ptid
))
2145 *buf
++ = gen
? 'g' : 'c';
2146 if (ptid_equal (ptid
, magic_null_ptid
))
2147 xsnprintf (buf
, endbuf
- buf
, "0");
2148 else if (ptid_equal (ptid
, any_thread_ptid
))
2149 xsnprintf (buf
, endbuf
- buf
, "0");
2150 else if (ptid_equal (ptid
, minus_one_ptid
))
2151 xsnprintf (buf
, endbuf
- buf
, "-1");
2153 write_ptid (buf
, endbuf
, ptid
);
2155 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2157 rs
->general_thread
= ptid
;
2159 rs
->continue_thread
= ptid
;
2163 set_general_thread (struct ptid ptid
)
2165 set_thread (ptid
, 1);
2169 set_continue_thread (struct ptid ptid
)
2171 set_thread (ptid
, 0);
2174 /* Change the remote current process. Which thread within the process
2175 ends up selected isn't important, as long as it is the same process
2176 as what INFERIOR_PTID points to.
2178 This comes from that fact that there is no explicit notion of
2179 "selected process" in the protocol. The selected process for
2180 general operations is the process the selected general thread
2184 set_general_process (void)
2186 struct remote_state
*rs
= get_remote_state ();
2188 /* If the remote can't handle multiple processes, don't bother. */
2189 if (!remote_multi_process_p (rs
))
2192 /* We only need to change the remote current thread if it's pointing
2193 at some other process. */
2194 if (ptid_get_pid (rs
->general_thread
) != ptid_get_pid (inferior_ptid
))
2195 set_general_thread (inferior_ptid
);
2199 /* Return nonzero if this is the main thread that we made up ourselves
2200 to model non-threaded targets as single-threaded. */
2203 remote_thread_always_alive (struct target_ops
*ops
, ptid_t ptid
)
2205 struct remote_state
*rs
= get_remote_state ();
2208 if (ptid_equal (ptid
, magic_null_ptid
))
2209 /* The main thread is always alive. */
2212 if (ptid_get_pid (ptid
) != 0 && ptid_get_lwp (ptid
) == 0)
2213 /* The main thread is always alive. This can happen after a
2214 vAttach, if the remote side doesn't support
2221 /* Return nonzero if the thread PTID is still alive on the remote
2225 remote_thread_alive (struct target_ops
*ops
, ptid_t ptid
)
2227 struct remote_state
*rs
= get_remote_state ();
2230 /* Check if this is a thread that we made up ourselves to model
2231 non-threaded targets as single-threaded. */
2232 if (remote_thread_always_alive (ops
, ptid
))
2236 endp
= rs
->buf
+ get_remote_packet_size ();
2239 write_ptid (p
, endp
, ptid
);
2242 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2243 return (rs
->buf
[0] == 'O' && rs
->buf
[1] == 'K');
2246 /* Return a pointer to a thread name if we know it and NULL otherwise.
2247 The thread_info object owns the memory for the name. */
2250 remote_thread_name (struct target_ops
*ops
, struct thread_info
*info
)
2252 if (info
->priv
!= NULL
)
2253 return info
->priv
->name
;
2258 /* About these extended threadlist and threadinfo packets. They are
2259 variable length packets but, the fields within them are often fixed
2260 length. They are redundent enough to send over UDP as is the
2261 remote protocol in general. There is a matching unit test module
2264 /* WARNING: This threadref data structure comes from the remote O.S.,
2265 libstub protocol encoding, and remote.c. It is not particularly
2268 /* Right now, the internal structure is int. We want it to be bigger.
2269 Plan to fix this. */
2271 typedef int gdb_threadref
; /* Internal GDB thread reference. */
2273 /* gdb_ext_thread_info is an internal GDB data structure which is
2274 equivalent to the reply of the remote threadinfo packet. */
2276 struct gdb_ext_thread_info
2278 threadref threadid
; /* External form of thread reference. */
2279 int active
; /* Has state interesting to GDB?
2281 char display
[256]; /* Brief state display, name,
2282 blocked/suspended. */
2283 char shortname
[32]; /* To be used to name threads. */
2284 char more_display
[256]; /* Long info, statistics, queue depth,
2288 /* The volume of remote transfers can be limited by submitting
2289 a mask containing bits specifying the desired information.
2290 Use a union of these values as the 'selection' parameter to
2291 get_thread_info. FIXME: Make these TAG names more thread specific. */
2293 #define TAG_THREADID 1
2294 #define TAG_EXISTS 2
2295 #define TAG_DISPLAY 4
2296 #define TAG_THREADNAME 8
2297 #define TAG_MOREDISPLAY 16
2299 #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2)
2301 static char *unpack_nibble (char *buf
, int *val
);
2303 static char *unpack_byte (char *buf
, int *value
);
2305 static char *pack_int (char *buf
, int value
);
2307 static char *unpack_int (char *buf
, int *value
);
2309 static char *unpack_string (char *src
, char *dest
, int length
);
2311 static char *pack_threadid (char *pkt
, threadref
*id
);
2313 static char *unpack_threadid (char *inbuf
, threadref
*id
);
2315 void int_to_threadref (threadref
*id
, int value
);
2317 static int threadref_to_int (threadref
*ref
);
2319 static void copy_threadref (threadref
*dest
, threadref
*src
);
2321 static int threadmatch (threadref
*dest
, threadref
*src
);
2323 static char *pack_threadinfo_request (char *pkt
, int mode
,
2326 static int remote_unpack_thread_info_response (char *pkt
,
2327 threadref
*expectedref
,
2328 struct gdb_ext_thread_info
2332 static int remote_get_threadinfo (threadref
*threadid
,
2333 int fieldset
, /*TAG mask */
2334 struct gdb_ext_thread_info
*info
);
2336 static char *pack_threadlist_request (char *pkt
, int startflag
,
2338 threadref
*nextthread
);
2340 static int parse_threadlist_response (char *pkt
,
2342 threadref
*original_echo
,
2343 threadref
*resultlist
,
2346 static int remote_get_threadlist (int startflag
,
2347 threadref
*nextthread
,
2351 threadref
*threadlist
);
2353 typedef int (*rmt_thread_action
) (threadref
*ref
, void *context
);
2355 static int remote_threadlist_iterator (rmt_thread_action stepfunction
,
2356 void *context
, int looplimit
);
2358 static int remote_newthread_step (threadref
*ref
, void *context
);
2361 /* Write a PTID to BUF. ENDBUF points to one-passed-the-end of the
2362 buffer we're allowed to write to. Returns
2363 BUF+CHARACTERS_WRITTEN. */
2366 write_ptid (char *buf
, const char *endbuf
, ptid_t ptid
)
2369 struct remote_state
*rs
= get_remote_state ();
2371 if (remote_multi_process_p (rs
))
2373 pid
= ptid_get_pid (ptid
);
2375 buf
+= xsnprintf (buf
, endbuf
- buf
, "p-%x.", -pid
);
2377 buf
+= xsnprintf (buf
, endbuf
- buf
, "p%x.", pid
);
2379 tid
= ptid_get_lwp (ptid
);
2381 buf
+= xsnprintf (buf
, endbuf
- buf
, "-%x", -tid
);
2383 buf
+= xsnprintf (buf
, endbuf
- buf
, "%x", tid
);
2388 /* Extract a PTID from BUF. If non-null, OBUF is set to the to one
2389 passed the last parsed char. Returns null_ptid on error. */
2392 read_ptid (char *buf
, char **obuf
)
2396 ULONGEST pid
= 0, tid
= 0;
2400 /* Multi-process ptid. */
2401 pp
= unpack_varlen_hex (p
+ 1, &pid
);
2403 error (_("invalid remote ptid: %s"), p
);
2406 pp
= unpack_varlen_hex (p
+ 1, &tid
);
2409 return ptid_build (pid
, tid
, 0);
2412 /* No multi-process. Just a tid. */
2413 pp
= unpack_varlen_hex (p
, &tid
);
2415 /* Return null_ptid when no thread id is found. */
2423 /* Since the stub is not sending a process id, then default to
2424 what's in inferior_ptid, unless it's null at this point. If so,
2425 then since there's no way to know the pid of the reported
2426 threads, use the magic number. */
2427 if (ptid_equal (inferior_ptid
, null_ptid
))
2428 pid
= ptid_get_pid (magic_null_ptid
);
2430 pid
= ptid_get_pid (inferior_ptid
);
2434 return ptid_build (pid
, tid
, 0);
2440 if (ch
>= 'a' && ch
<= 'f')
2441 return ch
- 'a' + 10;
2442 if (ch
>= '0' && ch
<= '9')
2444 if (ch
>= 'A' && ch
<= 'F')
2445 return ch
- 'A' + 10;
2450 stub_unpack_int (char *buff
, int fieldlength
)
2457 nibble
= stubhex (*buff
++);
2461 retval
= retval
<< 4;
2467 unpack_nibble (char *buf
, int *val
)
2469 *val
= fromhex (*buf
++);
2474 unpack_byte (char *buf
, int *value
)
2476 *value
= stub_unpack_int (buf
, 2);
2481 pack_int (char *buf
, int value
)
2483 buf
= pack_hex_byte (buf
, (value
>> 24) & 0xff);
2484 buf
= pack_hex_byte (buf
, (value
>> 16) & 0xff);
2485 buf
= pack_hex_byte (buf
, (value
>> 8) & 0x0ff);
2486 buf
= pack_hex_byte (buf
, (value
& 0xff));
2491 unpack_int (char *buf
, int *value
)
2493 *value
= stub_unpack_int (buf
, 8);
2497 #if 0 /* Currently unused, uncomment when needed. */
2498 static char *pack_string (char *pkt
, char *string
);
2501 pack_string (char *pkt
, char *string
)
2506 len
= strlen (string
);
2508 len
= 200; /* Bigger than most GDB packets, junk??? */
2509 pkt
= pack_hex_byte (pkt
, len
);
2513 if ((ch
== '\0') || (ch
== '#'))
2514 ch
= '*'; /* Protect encapsulation. */
2519 #endif /* 0 (unused) */
2522 unpack_string (char *src
, char *dest
, int length
)
2531 pack_threadid (char *pkt
, threadref
*id
)
2534 unsigned char *altid
;
2536 altid
= (unsigned char *) id
;
2537 limit
= pkt
+ BUF_THREAD_ID_SIZE
;
2539 pkt
= pack_hex_byte (pkt
, *altid
++);
2545 unpack_threadid (char *inbuf
, threadref
*id
)
2548 char *limit
= inbuf
+ BUF_THREAD_ID_SIZE
;
2551 altref
= (char *) id
;
2553 while (inbuf
< limit
)
2555 x
= stubhex (*inbuf
++);
2556 y
= stubhex (*inbuf
++);
2557 *altref
++ = (x
<< 4) | y
;
2562 /* Externally, threadrefs are 64 bits but internally, they are still
2563 ints. This is due to a mismatch of specifications. We would like
2564 to use 64bit thread references internally. This is an adapter
2568 int_to_threadref (threadref
*id
, int value
)
2570 unsigned char *scan
;
2572 scan
= (unsigned char *) id
;
2578 *scan
++ = (value
>> 24) & 0xff;
2579 *scan
++ = (value
>> 16) & 0xff;
2580 *scan
++ = (value
>> 8) & 0xff;
2581 *scan
++ = (value
& 0xff);
2585 threadref_to_int (threadref
*ref
)
2588 unsigned char *scan
;
2594 value
= (value
<< 8) | ((*scan
++) & 0xff);
2599 copy_threadref (threadref
*dest
, threadref
*src
)
2602 unsigned char *csrc
, *cdest
;
2604 csrc
= (unsigned char *) src
;
2605 cdest
= (unsigned char *) dest
;
2612 threadmatch (threadref
*dest
, threadref
*src
)
2614 /* Things are broken right now, so just assume we got a match. */
2616 unsigned char *srcp
, *destp
;
2618 srcp
= (char *) src
;
2619 destp
= (char *) dest
;
2623 result
&= (*srcp
++ == *destp
++) ? 1 : 0;
2630 threadid:1, # always request threadid
2637 /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */
2640 pack_threadinfo_request (char *pkt
, int mode
, threadref
*id
)
2642 *pkt
++ = 'q'; /* Info Query */
2643 *pkt
++ = 'P'; /* process or thread info */
2644 pkt
= pack_int (pkt
, mode
); /* mode */
2645 pkt
= pack_threadid (pkt
, id
); /* threadid */
2646 *pkt
= '\0'; /* terminate */
2650 /* These values tag the fields in a thread info response packet. */
2651 /* Tagging the fields allows us to request specific fields and to
2652 add more fields as time goes by. */
2654 #define TAG_THREADID 1 /* Echo the thread identifier. */
2655 #define TAG_EXISTS 2 /* Is this process defined enough to
2656 fetch registers and its stack? */
2657 #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */
2658 #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */
2659 #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about
2663 remote_unpack_thread_info_response (char *pkt
, threadref
*expectedref
,
2664 struct gdb_ext_thread_info
*info
)
2666 struct remote_state
*rs
= get_remote_state ();
2670 char *limit
= pkt
+ rs
->buf_size
; /* Plausible parsing limit. */
2673 /* info->threadid = 0; FIXME: implement zero_threadref. */
2675 info
->display
[0] = '\0';
2676 info
->shortname
[0] = '\0';
2677 info
->more_display
[0] = '\0';
2679 /* Assume the characters indicating the packet type have been
2681 pkt
= unpack_int (pkt
, &mask
); /* arg mask */
2682 pkt
= unpack_threadid (pkt
, &ref
);
2685 warning (_("Incomplete response to threadinfo request."));
2686 if (!threadmatch (&ref
, expectedref
))
2687 { /* This is an answer to a different request. */
2688 warning (_("ERROR RMT Thread info mismatch."));
2691 copy_threadref (&info
->threadid
, &ref
);
2693 /* Loop on tagged fields , try to bail if somthing goes wrong. */
2695 /* Packets are terminated with nulls. */
2696 while ((pkt
< limit
) && mask
&& *pkt
)
2698 pkt
= unpack_int (pkt
, &tag
); /* tag */
2699 pkt
= unpack_byte (pkt
, &length
); /* length */
2700 if (!(tag
& mask
)) /* Tags out of synch with mask. */
2702 warning (_("ERROR RMT: threadinfo tag mismatch."));
2706 if (tag
== TAG_THREADID
)
2710 warning (_("ERROR RMT: length of threadid is not 16."));
2714 pkt
= unpack_threadid (pkt
, &ref
);
2715 mask
= mask
& ~TAG_THREADID
;
2718 if (tag
== TAG_EXISTS
)
2720 info
->active
= stub_unpack_int (pkt
, length
);
2722 mask
= mask
& ~(TAG_EXISTS
);
2725 warning (_("ERROR RMT: 'exists' length too long."));
2731 if (tag
== TAG_THREADNAME
)
2733 pkt
= unpack_string (pkt
, &info
->shortname
[0], length
);
2734 mask
= mask
& ~TAG_THREADNAME
;
2737 if (tag
== TAG_DISPLAY
)
2739 pkt
= unpack_string (pkt
, &info
->display
[0], length
);
2740 mask
= mask
& ~TAG_DISPLAY
;
2743 if (tag
== TAG_MOREDISPLAY
)
2745 pkt
= unpack_string (pkt
, &info
->more_display
[0], length
);
2746 mask
= mask
& ~TAG_MOREDISPLAY
;
2749 warning (_("ERROR RMT: unknown thread info tag."));
2750 break; /* Not a tag we know about. */
2756 remote_get_threadinfo (threadref
*threadid
, int fieldset
, /* TAG mask */
2757 struct gdb_ext_thread_info
*info
)
2759 struct remote_state
*rs
= get_remote_state ();
2762 pack_threadinfo_request (rs
->buf
, fieldset
, threadid
);
2764 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2766 if (rs
->buf
[0] == '\0')
2769 result
= remote_unpack_thread_info_response (rs
->buf
+ 2,
2774 /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */
2777 pack_threadlist_request (char *pkt
, int startflag
, int threadcount
,
2778 threadref
*nextthread
)
2780 *pkt
++ = 'q'; /* info query packet */
2781 *pkt
++ = 'L'; /* Process LIST or threadLIST request */
2782 pkt
= pack_nibble (pkt
, startflag
); /* initflag 1 bytes */
2783 pkt
= pack_hex_byte (pkt
, threadcount
); /* threadcount 2 bytes */
2784 pkt
= pack_threadid (pkt
, nextthread
); /* 64 bit thread identifier */
2789 /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */
2792 parse_threadlist_response (char *pkt
, int result_limit
,
2793 threadref
*original_echo
, threadref
*resultlist
,
2796 struct remote_state
*rs
= get_remote_state ();
2798 int count
, resultcount
, done
;
2801 /* Assume the 'q' and 'M chars have been stripped. */
2802 limit
= pkt
+ (rs
->buf_size
- BUF_THREAD_ID_SIZE
);
2803 /* done parse past here */
2804 pkt
= unpack_byte (pkt
, &count
); /* count field */
2805 pkt
= unpack_nibble (pkt
, &done
);
2806 /* The first threadid is the argument threadid. */
2807 pkt
= unpack_threadid (pkt
, original_echo
); /* should match query packet */
2808 while ((count
-- > 0) && (pkt
< limit
))
2810 pkt
= unpack_threadid (pkt
, resultlist
++);
2811 if (resultcount
++ >= result_limit
)
2819 /* Fetch the next batch of threads from the remote. Returns -1 if the
2820 qL packet is not supported, 0 on error and 1 on success. */
2823 remote_get_threadlist (int startflag
, threadref
*nextthread
, int result_limit
,
2824 int *done
, int *result_count
, threadref
*threadlist
)
2826 struct remote_state
*rs
= get_remote_state ();
2829 /* Trancate result limit to be smaller than the packet size. */
2830 if ((((result_limit
+ 1) * BUF_THREAD_ID_SIZE
) + 10)
2831 >= get_remote_packet_size ())
2832 result_limit
= (get_remote_packet_size () / BUF_THREAD_ID_SIZE
) - 2;
2834 pack_threadlist_request (rs
->buf
, startflag
, result_limit
, nextthread
);
2836 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2837 if (*rs
->buf
== '\0')
2839 /* Packet not supported. */
2844 parse_threadlist_response (rs
->buf
+ 2, result_limit
,
2845 &rs
->echo_nextthread
, threadlist
, done
);
2847 if (!threadmatch (&rs
->echo_nextthread
, nextthread
))
2849 /* FIXME: This is a good reason to drop the packet. */
2850 /* Possably, there is a duplicate response. */
2852 retransmit immediatly - race conditions
2853 retransmit after timeout - yes
2855 wait for packet, then exit
2857 warning (_("HMM: threadlist did not echo arg thread, dropping it."));
2858 return 0; /* I choose simply exiting. */
2860 if (*result_count
<= 0)
2864 warning (_("RMT ERROR : failed to get remote thread list."));
2867 return result
; /* break; */
2869 if (*result_count
> result_limit
)
2872 warning (_("RMT ERROR: threadlist response longer than requested."));
2878 /* Fetch the list of remote threads, with the qL packet, and call
2879 STEPFUNCTION for each thread found. Stops iterating and returns 1
2880 if STEPFUNCTION returns true. Stops iterating and returns 0 if the
2881 STEPFUNCTION returns false. If the packet is not supported,
2885 remote_threadlist_iterator (rmt_thread_action stepfunction
, void *context
,
2888 struct remote_state
*rs
= get_remote_state ();
2889 int done
, i
, result_count
;
2897 if (loopcount
++ > looplimit
)
2900 warning (_("Remote fetch threadlist -infinite loop-."));
2903 result
= remote_get_threadlist (startflag
, &rs
->nextthread
,
2904 MAXTHREADLISTRESULTS
,
2905 &done
, &result_count
,
2906 rs
->resultthreadlist
);
2909 /* Clear for later iterations. */
2911 /* Setup to resume next batch of thread references, set nextthread. */
2912 if (result_count
>= 1)
2913 copy_threadref (&rs
->nextthread
,
2914 &rs
->resultthreadlist
[result_count
- 1]);
2916 while (result_count
--)
2918 if (!(*stepfunction
) (&rs
->resultthreadlist
[i
++], context
))
2928 /* A thread found on the remote target. */
2930 typedef struct thread_item
2932 /* The thread's PTID. */
2935 /* The thread's extra info. May be NULL. */
2938 /* The thread's name. May be NULL. */
2941 /* The core the thread was running on. -1 if not known. */
2944 DEF_VEC_O(thread_item_t
);
2946 /* Context passed around to the various methods listing remote
2947 threads. As new threads are found, they're added to the ITEMS
2950 struct threads_listing_context
2952 /* The threads found on the remote target. */
2953 VEC (thread_item_t
) *items
;
2956 /* Discard the contents of the constructed thread listing context. */
2959 clear_threads_listing_context (void *p
)
2961 struct threads_listing_context
*context
2962 = (struct threads_listing_context
*) p
;
2964 struct thread_item
*item
;
2966 for (i
= 0; VEC_iterate (thread_item_t
, context
->items
, i
, item
); ++i
)
2968 xfree (item
->extra
);
2972 VEC_free (thread_item_t
, context
->items
);
2975 /* Remove the thread specified as the related_pid field of WS
2976 from the CONTEXT list. */
2979 threads_listing_context_remove (struct target_waitstatus
*ws
,
2980 struct threads_listing_context
*context
)
2982 struct thread_item
*item
;
2984 ptid_t child_ptid
= ws
->value
.related_pid
;
2986 for (i
= 0; VEC_iterate (thread_item_t
, context
->items
, i
, item
); ++i
)
2988 if (ptid_equal (item
->ptid
, child_ptid
))
2990 VEC_ordered_remove (thread_item_t
, context
->items
, i
);
2997 remote_newthread_step (threadref
*ref
, void *data
)
2999 struct threads_listing_context
*context
3000 = (struct threads_listing_context
*) data
;
3001 struct thread_item item
;
3002 int pid
= ptid_get_pid (inferior_ptid
);
3004 item
.ptid
= ptid_build (pid
, threadref_to_int (ref
), 0);
3009 VEC_safe_push (thread_item_t
, context
->items
, &item
);
3011 return 1; /* continue iterator */
3014 #define CRAZY_MAX_THREADS 1000
3017 remote_current_thread (ptid_t oldpid
)
3019 struct remote_state
*rs
= get_remote_state ();
3022 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3023 if (rs
->buf
[0] == 'Q' && rs
->buf
[1] == 'C')
3028 result
= read_ptid (&rs
->buf
[2], &obuf
);
3029 if (*obuf
!= '\0' && remote_debug
)
3030 fprintf_unfiltered (gdb_stdlog
,
3031 "warning: garbage in qC reply\n");
3039 /* List remote threads using the deprecated qL packet. */
3042 remote_get_threads_with_ql (struct target_ops
*ops
,
3043 struct threads_listing_context
*context
)
3045 if (remote_threadlist_iterator (remote_newthread_step
, context
,
3046 CRAZY_MAX_THREADS
) >= 0)
3052 #if defined(HAVE_LIBEXPAT)
3055 start_thread (struct gdb_xml_parser
*parser
,
3056 const struct gdb_xml_element
*element
,
3057 void *user_data
, VEC(gdb_xml_value_s
) *attributes
)
3059 struct threads_listing_context
*data
3060 = (struct threads_listing_context
*) user_data
;
3062 struct thread_item item
;
3064 struct gdb_xml_value
*attr
;
3066 id
= (char *) xml_find_attribute (attributes
, "id")->value
;
3067 item
.ptid
= read_ptid (id
, NULL
);
3069 attr
= xml_find_attribute (attributes
, "core");
3071 item
.core
= *(ULONGEST
*) attr
->value
;
3075 attr
= xml_find_attribute (attributes
, "name");
3076 item
.name
= attr
!= NULL
? xstrdup ((const char *) attr
->value
) : NULL
;
3080 VEC_safe_push (thread_item_t
, data
->items
, &item
);
3084 end_thread (struct gdb_xml_parser
*parser
,
3085 const struct gdb_xml_element
*element
,
3086 void *user_data
, const char *body_text
)
3088 struct threads_listing_context
*data
3089 = (struct threads_listing_context
*) user_data
;
3091 if (body_text
&& *body_text
)
3092 VEC_last (thread_item_t
, data
->items
)->extra
= xstrdup (body_text
);
3095 const struct gdb_xml_attribute thread_attributes
[] = {
3096 { "id", GDB_XML_AF_NONE
, NULL
, NULL
},
3097 { "core", GDB_XML_AF_OPTIONAL
, gdb_xml_parse_attr_ulongest
, NULL
},
3098 { "name", GDB_XML_AF_OPTIONAL
, NULL
, NULL
},
3099 { NULL
, GDB_XML_AF_NONE
, NULL
, NULL
}
3102 const struct gdb_xml_element thread_children
[] = {
3103 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
3106 const struct gdb_xml_element threads_children
[] = {
3107 { "thread", thread_attributes
, thread_children
,
3108 GDB_XML_EF_REPEATABLE
| GDB_XML_EF_OPTIONAL
,
3109 start_thread
, end_thread
},
3110 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
3113 const struct gdb_xml_element threads_elements
[] = {
3114 { "threads", NULL
, threads_children
,
3115 GDB_XML_EF_NONE
, NULL
, NULL
},
3116 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
3121 /* List remote threads using qXfer:threads:read. */
3124 remote_get_threads_with_qxfer (struct target_ops
*ops
,
3125 struct threads_listing_context
*context
)
3127 #if defined(HAVE_LIBEXPAT)
3128 if (packet_support (PACKET_qXfer_threads
) == PACKET_ENABLE
)
3130 char *xml
= target_read_stralloc (ops
, TARGET_OBJECT_THREADS
, NULL
);
3131 struct cleanup
*back_to
= make_cleanup (xfree
, xml
);
3133 if (xml
!= NULL
&& *xml
!= '\0')
3135 gdb_xml_parse_quick (_("threads"), "threads.dtd",
3136 threads_elements
, xml
, context
);
3139 do_cleanups (back_to
);
3147 /* List remote threads using qfThreadInfo/qsThreadInfo. */
3150 remote_get_threads_with_qthreadinfo (struct target_ops
*ops
,
3151 struct threads_listing_context
*context
)
3153 struct remote_state
*rs
= get_remote_state ();
3155 if (rs
->use_threadinfo_query
)
3159 putpkt ("qfThreadInfo");
3160 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3162 if (bufp
[0] != '\0') /* q packet recognized */
3164 while (*bufp
++ == 'm') /* reply contains one or more TID */
3168 struct thread_item item
;
3170 item
.ptid
= read_ptid (bufp
, &bufp
);
3175 VEC_safe_push (thread_item_t
, context
->items
, &item
);
3177 while (*bufp
++ == ','); /* comma-separated list */
3178 putpkt ("qsThreadInfo");
3179 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3186 /* Packet not recognized. */
3187 rs
->use_threadinfo_query
= 0;
3194 /* Implement the to_update_thread_list function for the remote
3198 remote_update_thread_list (struct target_ops
*ops
)
3200 struct remote_state
*rs
= get_remote_state ();
3201 struct threads_listing_context context
;
3202 struct cleanup
*old_chain
;
3205 context
.items
= NULL
;
3206 old_chain
= make_cleanup (clear_threads_listing_context
, &context
);
3208 /* We have a few different mechanisms to fetch the thread list. Try
3209 them all, starting with the most preferred one first, falling
3210 back to older methods. */
3211 if (remote_get_threads_with_qxfer (ops
, &context
)
3212 || remote_get_threads_with_qthreadinfo (ops
, &context
)
3213 || remote_get_threads_with_ql (ops
, &context
))
3216 struct thread_item
*item
;
3217 struct thread_info
*tp
, *tmp
;
3221 if (VEC_empty (thread_item_t
, context
.items
)
3222 && remote_thread_always_alive (ops
, inferior_ptid
))
3224 /* Some targets don't really support threads, but still
3225 reply an (empty) thread list in response to the thread
3226 listing packets, instead of replying "packet not
3227 supported". Exit early so we don't delete the main
3229 do_cleanups (old_chain
);
3233 /* CONTEXT now holds the current thread list on the remote
3234 target end. Delete GDB-side threads no longer found on the
3236 ALL_THREADS_SAFE (tp
, tmp
)
3239 VEC_iterate (thread_item_t
, context
.items
, i
, item
);
3242 if (ptid_equal (item
->ptid
, tp
->ptid
))
3246 if (i
== VEC_length (thread_item_t
, context
.items
))
3249 delete_thread (tp
->ptid
);
3253 /* Remove any unreported fork child threads from CONTEXT so
3254 that we don't interfere with follow fork, which is where
3255 creation of such threads is handled. */
3256 remove_new_fork_children (&context
);
3258 /* And now add threads we don't know about yet to our list. */
3260 VEC_iterate (thread_item_t
, context
.items
, i
, item
);
3263 if (!ptid_equal (item
->ptid
, null_ptid
))
3265 struct private_thread_info
*info
;
3266 /* In non-stop mode, we assume new found threads are
3267 running until proven otherwise with a stop reply. In
3268 all-stop, we can only get here if all threads are
3270 int running
= target_is_non_stop_p () ? 1 : 0;
3272 remote_notice_new_inferior (item
->ptid
, running
);
3274 info
= demand_private_info (item
->ptid
);
3275 info
->core
= item
->core
;
3276 info
->extra
= item
->extra
;
3278 info
->name
= item
->name
;
3286 /* If no thread listing method is supported, then query whether
3287 each known thread is alive, one by one, with the T packet.
3288 If the target doesn't support threads at all, then this is a
3289 no-op. See remote_thread_alive. */
3293 do_cleanups (old_chain
);
3297 * Collect a descriptive string about the given thread.
3298 * The target may say anything it wants to about the thread
3299 * (typically info about its blocked / runnable state, name, etc.).
3300 * This string will appear in the info threads display.
3302 * Optional: targets are not required to implement this function.
3306 remote_threads_extra_info (struct target_ops
*self
, struct thread_info
*tp
)
3308 struct remote_state
*rs
= get_remote_state ();
3312 struct gdb_ext_thread_info threadinfo
;
3313 static char display_buf
[100]; /* arbitrary... */
3314 int n
= 0; /* position in display_buf */
3316 if (rs
->remote_desc
== 0) /* paranoia */
3317 internal_error (__FILE__
, __LINE__
,
3318 _("remote_threads_extra_info"));
3320 if (ptid_equal (tp
->ptid
, magic_null_ptid
)
3321 || (ptid_get_pid (tp
->ptid
) != 0 && ptid_get_lwp (tp
->ptid
) == 0))
3322 /* This is the main thread which was added by GDB. The remote
3323 server doesn't know about it. */
3326 if (packet_support (PACKET_qXfer_threads
) == PACKET_ENABLE
)
3328 struct thread_info
*info
= find_thread_ptid (tp
->ptid
);
3330 if (info
&& info
->priv
)
3331 return info
->priv
->extra
;
3336 if (rs
->use_threadextra_query
)
3339 char *endb
= rs
->buf
+ get_remote_packet_size ();
3341 xsnprintf (b
, endb
- b
, "qThreadExtraInfo,");
3343 write_ptid (b
, endb
, tp
->ptid
);
3346 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3347 if (rs
->buf
[0] != 0)
3349 n
= min (strlen (rs
->buf
) / 2, sizeof (display_buf
));
3350 result
= hex2bin (rs
->buf
, (gdb_byte
*) display_buf
, n
);
3351 display_buf
[result
] = '\0';
3356 /* If the above query fails, fall back to the old method. */
3357 rs
->use_threadextra_query
= 0;
3358 set
= TAG_THREADID
| TAG_EXISTS
| TAG_THREADNAME
3359 | TAG_MOREDISPLAY
| TAG_DISPLAY
;
3360 int_to_threadref (&id
, ptid_get_lwp (tp
->ptid
));
3361 if (remote_get_threadinfo (&id
, set
, &threadinfo
))
3362 if (threadinfo
.active
)
3364 if (*threadinfo
.shortname
)
3365 n
+= xsnprintf (&display_buf
[0], sizeof (display_buf
) - n
,
3366 " Name: %s,", threadinfo
.shortname
);
3367 if (*threadinfo
.display
)
3368 n
+= xsnprintf (&display_buf
[n
], sizeof (display_buf
) - n
,
3369 " State: %s,", threadinfo
.display
);
3370 if (*threadinfo
.more_display
)
3371 n
+= xsnprintf (&display_buf
[n
], sizeof (display_buf
) - n
,
3372 " Priority: %s", threadinfo
.more_display
);
3376 /* For purely cosmetic reasons, clear up trailing commas. */
3377 if (',' == display_buf
[n
-1])
3378 display_buf
[n
-1] = ' ';
3387 remote_static_tracepoint_marker_at (struct target_ops
*self
, CORE_ADDR addr
,
3388 struct static_tracepoint_marker
*marker
)
3390 struct remote_state
*rs
= get_remote_state ();
3393 xsnprintf (p
, get_remote_packet_size (), "qTSTMat:");
3395 p
+= hexnumstr (p
, addr
);
3397 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3401 error (_("Remote failure reply: %s"), p
);
3405 parse_static_tracepoint_marker_definition (p
, &p
, marker
);
3412 static VEC(static_tracepoint_marker_p
) *
3413 remote_static_tracepoint_markers_by_strid (struct target_ops
*self
,
3416 struct remote_state
*rs
= get_remote_state ();
3417 VEC(static_tracepoint_marker_p
) *markers
= NULL
;
3418 struct static_tracepoint_marker
*marker
= NULL
;
3419 struct cleanup
*old_chain
;
3422 /* Ask for a first packet of static tracepoint marker
3425 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3428 error (_("Remote failure reply: %s"), p
);
3430 old_chain
= make_cleanup (free_current_marker
, &marker
);
3435 marker
= XCNEW (struct static_tracepoint_marker
);
3439 parse_static_tracepoint_marker_definition (p
, &p
, marker
);
3441 if (strid
== NULL
|| strcmp (strid
, marker
->str_id
) == 0)
3443 VEC_safe_push (static_tracepoint_marker_p
,
3449 release_static_tracepoint_marker (marker
);
3450 memset (marker
, 0, sizeof (*marker
));
3453 while (*p
++ == ','); /* comma-separated list */
3454 /* Ask for another packet of static tracepoint definition. */
3456 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3460 do_cleanups (old_chain
);
3465 /* Implement the to_get_ada_task_ptid function for the remote targets. */
3468 remote_get_ada_task_ptid (struct target_ops
*self
, long lwp
, long thread
)
3470 return ptid_build (ptid_get_pid (inferior_ptid
), lwp
, 0);
3474 /* Restart the remote side; this is an extended protocol operation. */
3477 extended_remote_restart (void)
3479 struct remote_state
*rs
= get_remote_state ();
3481 /* Send the restart command; for reasons I don't understand the
3482 remote side really expects a number after the "R". */
3483 xsnprintf (rs
->buf
, get_remote_packet_size (), "R%x", 0);
3486 remote_fileio_reset ();
3489 /* Clean up connection to a remote debugger. */
3492 remote_close (struct target_ops
*self
)
3494 struct remote_state
*rs
= get_remote_state ();
3496 if (rs
->remote_desc
== NULL
)
3497 return; /* already closed */
3499 /* Make sure we leave stdin registered in the event loop, and we
3500 don't leave the async SIGINT signal handler installed. */
3501 remote_terminal_ours (self
);
3503 serial_close (rs
->remote_desc
);
3504 rs
->remote_desc
= NULL
;
3506 /* We don't have a connection to the remote stub anymore. Get rid
3507 of all the inferiors and their threads we were controlling.
3508 Reset inferior_ptid to null_ptid first, as otherwise has_stack_frame
3509 will be unable to find the thread corresponding to (pid, 0, 0). */
3510 inferior_ptid
= null_ptid
;
3511 discard_all_inferiors ();
3513 /* We are closing the remote target, so we should discard
3514 everything of this target. */
3515 discard_pending_stop_replies_in_queue (rs
);
3517 if (remote_async_inferior_event_token
)
3518 delete_async_event_handler (&remote_async_inferior_event_token
);
3520 remote_notif_state_xfree (rs
->notif_state
);
3522 trace_reset_local_state ();
3525 /* Query the remote side for the text, data and bss offsets. */
3530 struct remote_state
*rs
= get_remote_state ();
3533 int lose
, num_segments
= 0, do_sections
, do_segments
;
3534 CORE_ADDR text_addr
, data_addr
, bss_addr
, segments
[2];
3535 struct section_offsets
*offs
;
3536 struct symfile_segment_data
*data
;
3538 if (symfile_objfile
== NULL
)
3541 putpkt ("qOffsets");
3542 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3545 if (buf
[0] == '\000')
3546 return; /* Return silently. Stub doesn't support
3550 warning (_("Remote failure reply: %s"), buf
);
3554 /* Pick up each field in turn. This used to be done with scanf, but
3555 scanf will make trouble if CORE_ADDR size doesn't match
3556 conversion directives correctly. The following code will work
3557 with any size of CORE_ADDR. */
3558 text_addr
= data_addr
= bss_addr
= 0;
3562 if (startswith (ptr
, "Text="))
3565 /* Don't use strtol, could lose on big values. */
3566 while (*ptr
&& *ptr
!= ';')
3567 text_addr
= (text_addr
<< 4) + fromhex (*ptr
++);
3569 if (startswith (ptr
, ";Data="))
3572 while (*ptr
&& *ptr
!= ';')
3573 data_addr
= (data_addr
<< 4) + fromhex (*ptr
++);
3578 if (!lose
&& startswith (ptr
, ";Bss="))
3581 while (*ptr
&& *ptr
!= ';')
3582 bss_addr
= (bss_addr
<< 4) + fromhex (*ptr
++);
3584 if (bss_addr
!= data_addr
)
3585 warning (_("Target reported unsupported offsets: %s"), buf
);
3590 else if (startswith (ptr
, "TextSeg="))
3593 /* Don't use strtol, could lose on big values. */
3594 while (*ptr
&& *ptr
!= ';')
3595 text_addr
= (text_addr
<< 4) + fromhex (*ptr
++);
3598 if (startswith (ptr
, ";DataSeg="))
3601 while (*ptr
&& *ptr
!= ';')
3602 data_addr
= (data_addr
<< 4) + fromhex (*ptr
++);
3610 error (_("Malformed response to offset query, %s"), buf
);
3611 else if (*ptr
!= '\0')
3612 warning (_("Target reported unsupported offsets: %s"), buf
);
3614 offs
= ((struct section_offsets
*)
3615 alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
)));
3616 memcpy (offs
, symfile_objfile
->section_offsets
,
3617 SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
));
3619 data
= get_symfile_segment_data (symfile_objfile
->obfd
);
3620 do_segments
= (data
!= NULL
);
3621 do_sections
= num_segments
== 0;
3623 if (num_segments
> 0)
3625 segments
[0] = text_addr
;
3626 segments
[1] = data_addr
;
3628 /* If we have two segments, we can still try to relocate everything
3629 by assuming that the .text and .data offsets apply to the whole
3630 text and data segments. Convert the offsets given in the packet
3631 to base addresses for symfile_map_offsets_to_segments. */
3632 else if (data
&& data
->num_segments
== 2)
3634 segments
[0] = data
->segment_bases
[0] + text_addr
;
3635 segments
[1] = data
->segment_bases
[1] + data_addr
;
3638 /* If the object file has only one segment, assume that it is text
3639 rather than data; main programs with no writable data are rare,
3640 but programs with no code are useless. Of course the code might
3641 have ended up in the data segment... to detect that we would need
3642 the permissions here. */
3643 else if (data
&& data
->num_segments
== 1)
3645 segments
[0] = data
->segment_bases
[0] + text_addr
;
3648 /* There's no way to relocate by segment. */
3654 int ret
= symfile_map_offsets_to_segments (symfile_objfile
->obfd
, data
,
3655 offs
, num_segments
, segments
);
3657 if (ret
== 0 && !do_sections
)
3658 error (_("Can not handle qOffsets TextSeg "
3659 "response with this symbol file"));
3666 free_symfile_segment_data (data
);
3670 offs
->offsets
[SECT_OFF_TEXT (symfile_objfile
)] = text_addr
;
3672 /* This is a temporary kludge to force data and bss to use the
3673 same offsets because that's what nlmconv does now. The real
3674 solution requires changes to the stub and remote.c that I
3675 don't have time to do right now. */
3677 offs
->offsets
[SECT_OFF_DATA (symfile_objfile
)] = data_addr
;
3678 offs
->offsets
[SECT_OFF_BSS (symfile_objfile
)] = data_addr
;
3681 objfile_relocate (symfile_objfile
, offs
);
3684 /* Send interrupt_sequence to remote target. */
3686 send_interrupt_sequence (void)
3688 struct remote_state
*rs
= get_remote_state ();
3690 if (interrupt_sequence_mode
== interrupt_sequence_control_c
)
3691 remote_serial_write ("\x03", 1);
3692 else if (interrupt_sequence_mode
== interrupt_sequence_break
)
3693 serial_send_break (rs
->remote_desc
);
3694 else if (interrupt_sequence_mode
== interrupt_sequence_break_g
)
3696 serial_send_break (rs
->remote_desc
);
3697 remote_serial_write ("g", 1);
3700 internal_error (__FILE__
, __LINE__
,
3701 _("Invalid value for interrupt_sequence_mode: %s."),
3702 interrupt_sequence_mode
);
3706 /* If STOP_REPLY is a T stop reply, look for the "thread" register,
3707 and extract the PTID. Returns NULL_PTID if not found. */
3710 stop_reply_extract_thread (char *stop_reply
)
3712 if (stop_reply
[0] == 'T' && strlen (stop_reply
) > 3)
3716 /* Txx r:val ; r:val (...) */
3719 /* Look for "register" named "thread". */
3724 p1
= strchr (p
, ':');
3728 if (strncmp (p
, "thread", p1
- p
) == 0)
3729 return read_ptid (++p1
, &p
);
3731 p1
= strchr (p
, ';');
3743 /* Determine the remote side's current thread. If we have a stop
3744 reply handy (in WAIT_STATUS), maybe it's a T stop reply with a
3745 "thread" register we can extract the current thread from. If not,
3746 ask the remote which is the current thread with qC. The former
3747 method avoids a roundtrip. */
3750 get_current_thread (char *wait_status
)
3752 ptid_t ptid
= null_ptid
;
3754 /* Note we don't use remote_parse_stop_reply as that makes use of
3755 the target architecture, which we haven't yet fully determined at
3757 if (wait_status
!= NULL
)
3758 ptid
= stop_reply_extract_thread (wait_status
);
3759 if (ptid_equal (ptid
, null_ptid
))
3760 ptid
= remote_current_thread (inferior_ptid
);
3765 /* Query the remote target for which is the current thread/process,
3766 add it to our tables, and update INFERIOR_PTID. The caller is
3767 responsible for setting the state such that the remote end is ready
3768 to return the current thread.
3770 This function is called after handling the '?' or 'vRun' packets,
3771 whose response is a stop reply from which we can also try
3772 extracting the thread. If the target doesn't support the explicit
3773 qC query, we infer the current thread from that stop reply, passed
3774 in in WAIT_STATUS, which may be NULL. */
3777 add_current_inferior_and_thread (char *wait_status
)
3779 struct remote_state
*rs
= get_remote_state ();
3783 inferior_ptid
= null_ptid
;
3785 /* Now, if we have thread information, update inferior_ptid. */
3786 ptid
= get_current_thread (wait_status
);
3788 if (!ptid_equal (ptid
, null_ptid
))
3790 if (!remote_multi_process_p (rs
))
3793 inferior_ptid
= ptid
;
3797 /* Without this, some commands which require an active target
3798 (such as kill) won't work. This variable serves (at least)
3799 double duty as both the pid of the target process (if it has
3800 such), and as a flag indicating that a target is active. */
3801 inferior_ptid
= magic_null_ptid
;
3805 remote_add_inferior (fake_pid_p
, ptid_get_pid (inferior_ptid
), -1, 1);
3807 /* Add the main thread. */
3808 add_thread_silent (inferior_ptid
);
3811 /* Print info about a thread that was found already stopped on
3815 print_one_stopped_thread (struct thread_info
*thread
)
3817 struct target_waitstatus
*ws
= &thread
->suspend
.waitstatus
;
3819 switch_to_thread (thread
->ptid
);
3820 stop_pc
= get_frame_pc (get_current_frame ());
3821 set_current_sal_from_frame (get_current_frame ());
3823 thread
->suspend
.waitstatus_pending_p
= 0;
3825 if (ws
->kind
== TARGET_WAITKIND_STOPPED
)
3827 enum gdb_signal sig
= ws
->value
.sig
;
3829 if (signal_print_state (sig
))
3830 observer_notify_signal_received (sig
);
3832 observer_notify_normal_stop (NULL
, 1);
3835 /* Process all initial stop replies the remote side sent in response
3836 to the ? packet. These indicate threads that were already stopped
3837 on initial connection. We mark these threads as stopped and print
3838 their current frame before giving the user the prompt. */
3841 process_initial_stop_replies (int from_tty
)
3843 int pending_stop_replies
= stop_reply_queue_length ();
3844 struct inferior
*inf
;
3845 struct thread_info
*thread
;
3846 struct thread_info
*selected
= NULL
;
3847 struct thread_info
*lowest_stopped
= NULL
;
3848 struct thread_info
*first
= NULL
;
3850 /* Consume the initial pending events. */
3851 while (pending_stop_replies
-- > 0)
3853 ptid_t waiton_ptid
= minus_one_ptid
;
3855 struct target_waitstatus ws
;
3856 int ignore_event
= 0;
3857 struct thread_info
*thread
;
3859 memset (&ws
, 0, sizeof (ws
));
3860 event_ptid
= target_wait (waiton_ptid
, &ws
, TARGET_WNOHANG
);
3862 print_target_wait_results (waiton_ptid
, event_ptid
, &ws
);
3866 case TARGET_WAITKIND_IGNORE
:
3867 case TARGET_WAITKIND_NO_RESUMED
:
3868 case TARGET_WAITKIND_SIGNALLED
:
3869 case TARGET_WAITKIND_EXITED
:
3870 /* We shouldn't see these, but if we do, just ignore. */
3872 fprintf_unfiltered (gdb_stdlog
, "remote: event ignored\n");
3876 case TARGET_WAITKIND_EXECD
:
3877 xfree (ws
.value
.execd_pathname
);
3886 thread
= find_thread_ptid (event_ptid
);
3888 if (ws
.kind
== TARGET_WAITKIND_STOPPED
)
3890 enum gdb_signal sig
= ws
.value
.sig
;
3892 /* Stubs traditionally report SIGTRAP as initial signal,
3893 instead of signal 0. Suppress it. */
3894 if (sig
== GDB_SIGNAL_TRAP
)
3896 thread
->suspend
.stop_signal
= sig
;
3900 thread
->suspend
.waitstatus
= ws
;
3902 if (ws
.kind
!= TARGET_WAITKIND_STOPPED
3903 || ws
.value
.sig
!= GDB_SIGNAL_0
)
3904 thread
->suspend
.waitstatus_pending_p
= 1;
3906 set_executing (event_ptid
, 0);
3907 set_running (event_ptid
, 0);
3910 /* "Notice" the new inferiors before anything related to
3911 registers/memory. */
3917 inf
->needs_setup
= 1;
3921 thread
= any_live_thread_of_process (inf
->pid
);
3922 notice_new_inferior (thread
->ptid
,
3923 thread
->state
== THREAD_RUNNING
,
3928 /* If all-stop on top of non-stop, pause all threads. Note this
3929 records the threads' stop pc, so must be done after "noticing"
3933 stop_all_threads ();
3935 /* If all threads of an inferior were already stopped, we
3936 haven't setup the inferior yet. */
3942 if (inf
->needs_setup
)
3944 thread
= any_live_thread_of_process (inf
->pid
);
3945 switch_to_thread_no_regs (thread
);
3951 /* Now go over all threads that are stopped, and print their current
3952 frame. If all-stop, then if there's a signalled thread, pick
3954 ALL_NON_EXITED_THREADS (thread
)
3956 struct target_waitstatus
*ws
;
3962 set_running (thread
->ptid
, 0);
3963 else if (thread
->state
!= THREAD_STOPPED
)
3966 ws
= &thread
->suspend
.waitstatus
;
3968 if (selected
== NULL
3969 && thread
->suspend
.waitstatus_pending_p
)
3972 if (lowest_stopped
== NULL
3973 || thread
->inf
->num
< lowest_stopped
->inf
->num
3974 || thread
->per_inf_num
< lowest_stopped
->per_inf_num
)
3975 lowest_stopped
= thread
;
3978 print_one_stopped_thread (thread
);
3981 /* In all-stop, we only print the status of one thread, and leave
3982 others with their status pending. */
3987 thread
= lowest_stopped
;
3991 print_one_stopped_thread (thread
);
3994 /* For "info program". */
3995 thread
= inferior_thread ();
3996 if (thread
->state
== THREAD_STOPPED
)
3997 set_last_target_status (inferior_ptid
, thread
->suspend
.waitstatus
);
4001 remote_start_remote (int from_tty
, struct target_ops
*target
, int extended_p
)
4003 struct remote_state
*rs
= get_remote_state ();
4004 struct packet_config
*noack_config
;
4005 char *wait_status
= NULL
;
4007 immediate_quit
++; /* Allow user to interrupt it. */
4010 if (interrupt_on_connect
)
4011 send_interrupt_sequence ();
4013 /* Ack any packet which the remote side has already sent. */
4014 serial_write (rs
->remote_desc
, "+", 1);
4016 /* Signal other parts that we're going through the initial setup,
4017 and so things may not be stable yet. */
4018 rs
->starting_up
= 1;
4020 /* The first packet we send to the target is the optional "supported
4021 packets" request. If the target can answer this, it will tell us
4022 which later probes to skip. */
4023 remote_query_supported ();
4025 /* If the stub wants to get a QAllow, compose one and send it. */
4026 if (packet_support (PACKET_QAllow
) != PACKET_DISABLE
)
4027 remote_set_permissions (target
);
4029 /* Next, we possibly activate noack mode.
4031 If the QStartNoAckMode packet configuration is set to AUTO,
4032 enable noack mode if the stub reported a wish for it with
4035 If set to TRUE, then enable noack mode even if the stub didn't
4036 report it in qSupported. If the stub doesn't reply OK, the
4037 session ends with an error.
4039 If FALSE, then don't activate noack mode, regardless of what the
4040 stub claimed should be the default with qSupported. */
4042 noack_config
= &remote_protocol_packets
[PACKET_QStartNoAckMode
];
4043 if (packet_config_support (noack_config
) != PACKET_DISABLE
)
4045 putpkt ("QStartNoAckMode");
4046 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4047 if (packet_ok (rs
->buf
, noack_config
) == PACKET_OK
)
4053 /* Tell the remote that we are using the extended protocol. */
4055 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4058 /* Let the target know which signals it is allowed to pass down to
4060 update_signals_program_target ();
4062 /* Next, if the target can specify a description, read it. We do
4063 this before anything involving memory or registers. */
4064 target_find_description ();
4066 /* Next, now that we know something about the target, update the
4067 address spaces in the program spaces. */
4068 update_address_spaces ();
4070 /* On OSs where the list of libraries is global to all
4071 processes, we fetch them early. */
4072 if (gdbarch_has_global_solist (target_gdbarch ()))
4073 solib_add (NULL
, from_tty
, target
, auto_solib_add
);
4075 if (target_is_non_stop_p ())
4077 if (packet_support (PACKET_QNonStop
) != PACKET_ENABLE
)
4078 error (_("Non-stop mode requested, but remote "
4079 "does not support non-stop"));
4081 putpkt ("QNonStop:1");
4082 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4084 if (strcmp (rs
->buf
, "OK") != 0)
4085 error (_("Remote refused setting non-stop mode with: %s"), rs
->buf
);
4087 /* Find about threads and processes the stub is already
4088 controlling. We default to adding them in the running state.
4089 The '?' query below will then tell us about which threads are
4091 remote_update_thread_list (target
);
4093 else if (packet_support (PACKET_QNonStop
) == PACKET_ENABLE
)
4095 /* Don't assume that the stub can operate in all-stop mode.
4096 Request it explicitly. */
4097 putpkt ("QNonStop:0");
4098 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4100 if (strcmp (rs
->buf
, "OK") != 0)
4101 error (_("Remote refused setting all-stop mode with: %s"), rs
->buf
);
4104 /* Upload TSVs regardless of whether the target is running or not. The
4105 remote stub, such as GDBserver, may have some predefined or builtin
4106 TSVs, even if the target is not running. */
4107 if (remote_get_trace_status (target
, current_trace_status ()) != -1)
4109 struct uploaded_tsv
*uploaded_tsvs
= NULL
;
4111 remote_upload_trace_state_variables (target
, &uploaded_tsvs
);
4112 merge_uploaded_trace_state_variables (&uploaded_tsvs
);
4115 /* Check whether the target is running now. */
4117 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4119 if (!target_is_non_stop_p ())
4123 struct inferior
*inf
;
4125 if (rs
->buf
[0] == 'W' || rs
->buf
[0] == 'X')
4128 error (_("The target is not running (try extended-remote?)"));
4130 /* We're connected, but not running. Drop out before we
4131 call start_remote. */
4132 rs
->starting_up
= 0;
4137 /* Save the reply for later. */
4138 wait_status
= (char *) alloca (strlen (rs
->buf
) + 1);
4139 strcpy (wait_status
, rs
->buf
);
4142 /* Fetch thread list. */
4143 target_update_thread_list ();
4145 /* Let the stub know that we want it to return the thread. */
4146 set_continue_thread (minus_one_ptid
);
4148 if (thread_count () == 0)
4150 /* Target has no concept of threads at all. GDB treats
4151 non-threaded target as single-threaded; add a main
4153 add_current_inferior_and_thread (wait_status
);
4157 /* We have thread information; select the thread the target
4158 says should be current. If we're reconnecting to a
4159 multi-threaded program, this will ideally be the thread
4160 that last reported an event before GDB disconnected. */
4161 inferior_ptid
= get_current_thread (wait_status
);
4162 if (ptid_equal (inferior_ptid
, null_ptid
))
4164 /* Odd... The target was able to list threads, but not
4165 tell us which thread was current (no "thread"
4166 register in T stop reply?). Just pick the first
4167 thread in the thread list then. */
4170 fprintf_unfiltered (gdb_stdlog
,
4171 "warning: couldn't determine remote "
4172 "current thread; picking first in list.\n");
4174 inferior_ptid
= thread_list
->ptid
;
4178 /* init_wait_for_inferior should be called before get_offsets in order
4179 to manage `inserted' flag in bp loc in a correct state.
4180 breakpoint_init_inferior, called from init_wait_for_inferior, set
4181 `inserted' flag to 0, while before breakpoint_re_set, called from
4182 start_remote, set `inserted' flag to 1. In the initialization of
4183 inferior, breakpoint_init_inferior should be called first, and then
4184 breakpoint_re_set can be called. If this order is broken, state of
4185 `inserted' flag is wrong, and cause some problems on breakpoint
4187 init_wait_for_inferior ();
4189 get_offsets (); /* Get text, data & bss offsets. */
4191 /* If we could not find a description using qXfer, and we know
4192 how to do it some other way, try again. This is not
4193 supported for non-stop; it could be, but it is tricky if
4194 there are no stopped threads when we connect. */
4195 if (remote_read_description_p (target
)
4196 && gdbarch_target_desc (target_gdbarch ()) == NULL
)
4198 target_clear_description ();
4199 target_find_description ();
4202 /* Use the previously fetched status. */
4203 gdb_assert (wait_status
!= NULL
);
4204 strcpy (rs
->buf
, wait_status
);
4205 rs
->cached_wait_status
= 1;
4208 start_remote (from_tty
); /* Initialize gdb process mechanisms. */
4212 /* Clear WFI global state. Do this before finding about new
4213 threads and inferiors, and setting the current inferior.
4214 Otherwise we would clear the proceed status of the current
4215 inferior when we want its stop_soon state to be preserved
4216 (see notice_new_inferior). */
4217 init_wait_for_inferior ();
4219 /* In non-stop, we will either get an "OK", meaning that there
4220 are no stopped threads at this time; or, a regular stop
4221 reply. In the latter case, there may be more than one thread
4222 stopped --- we pull them all out using the vStopped
4224 if (strcmp (rs
->buf
, "OK") != 0)
4226 struct notif_client
*notif
= ¬if_client_stop
;
4228 /* remote_notif_get_pending_replies acks this one, and gets
4230 rs
->notif_state
->pending_event
[notif_client_stop
.id
]
4231 = remote_notif_parse (notif
, rs
->buf
);
4232 remote_notif_get_pending_events (notif
);
4235 if (thread_count () == 0)
4238 error (_("The target is not running (try extended-remote?)"));
4240 /* We're connected, but not running. Drop out before we
4241 call start_remote. */
4242 rs
->starting_up
= 0;
4246 /* In non-stop mode, any cached wait status will be stored in
4247 the stop reply queue. */
4248 gdb_assert (wait_status
== NULL
);
4250 /* Report all signals during attach/startup. */
4251 remote_pass_signals (target
, 0, NULL
);
4253 /* If there are already stopped threads, mark them stopped and
4254 report their stops before giving the prompt to the user. */
4255 process_initial_stop_replies (from_tty
);
4257 if (target_can_async_p ())
4261 /* If we connected to a live target, do some additional setup. */
4262 if (target_has_execution
)
4264 if (symfile_objfile
) /* No use without a symbol-file. */
4265 remote_check_symbols ();
4268 /* Possibly the target has been engaged in a trace run started
4269 previously; find out where things are at. */
4270 if (remote_get_trace_status (target
, current_trace_status ()) != -1)
4272 struct uploaded_tp
*uploaded_tps
= NULL
;
4274 if (current_trace_status ()->running
)
4275 printf_filtered (_("Trace is already running on the target.\n"));
4277 remote_upload_tracepoints (target
, &uploaded_tps
);
4279 merge_uploaded_tracepoints (&uploaded_tps
);
4282 /* The thread and inferior lists are now synchronized with the
4283 target, our symbols have been relocated, and we're merged the
4284 target's tracepoints with ours. We're done with basic start
4286 rs
->starting_up
= 0;
4288 /* Maybe breakpoints are global and need to be inserted now. */
4289 if (breakpoints_should_be_inserted_now ())
4290 insert_breakpoints ();
4293 /* Open a connection to a remote debugger.
4294 NAME is the filename used for communication. */
4297 remote_open (const char *name
, int from_tty
)
4299 remote_open_1 (name
, from_tty
, &remote_ops
, 0);
4302 /* Open a connection to a remote debugger using the extended
4303 remote gdb protocol. NAME is the filename used for communication. */
4306 extended_remote_open (const char *name
, int from_tty
)
4308 remote_open_1 (name
, from_tty
, &extended_remote_ops
, 1 /*extended_p */);
4311 /* Reset all packets back to "unknown support". Called when opening a
4312 new connection to a remote target. */
4315 reset_all_packet_configs_support (void)
4319 for (i
= 0; i
< PACKET_MAX
; i
++)
4320 remote_protocol_packets
[i
].support
= PACKET_SUPPORT_UNKNOWN
;
4323 /* Initialize all packet configs. */
4326 init_all_packet_configs (void)
4330 for (i
= 0; i
< PACKET_MAX
; i
++)
4332 remote_protocol_packets
[i
].detect
= AUTO_BOOLEAN_AUTO
;
4333 remote_protocol_packets
[i
].support
= PACKET_SUPPORT_UNKNOWN
;
4337 /* Symbol look-up. */
4340 remote_check_symbols (void)
4342 struct remote_state
*rs
= get_remote_state ();
4343 char *msg
, *reply
, *tmp
;
4344 struct bound_minimal_symbol sym
;
4346 struct cleanup
*old_chain
;
4348 /* The remote side has no concept of inferiors that aren't running
4349 yet, it only knows about running processes. If we're connected
4350 but our current inferior is not running, we should not invite the
4351 remote target to request symbol lookups related to its
4352 (unrelated) current process. */
4353 if (!target_has_execution
)
4356 if (packet_support (PACKET_qSymbol
) == PACKET_DISABLE
)
4359 /* Make sure the remote is pointing at the right process. Note
4360 there's no way to select "no process". */
4361 set_general_process ();
4363 /* Allocate a message buffer. We can't reuse the input buffer in RS,
4364 because we need both at the same time. */
4365 msg
= (char *) xmalloc (get_remote_packet_size ());
4366 old_chain
= make_cleanup (xfree
, msg
);
4368 /* Invite target to request symbol lookups. */
4370 putpkt ("qSymbol::");
4371 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4372 packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_qSymbol
]);
4375 while (startswith (reply
, "qSymbol:"))
4377 struct bound_minimal_symbol sym
;
4380 end
= hex2bin (tmp
, (gdb_byte
*) msg
, strlen (tmp
) / 2);
4382 sym
= lookup_minimal_symbol (msg
, NULL
, NULL
);
4383 if (sym
.minsym
== NULL
)
4384 xsnprintf (msg
, get_remote_packet_size (), "qSymbol::%s", &reply
[8]);
4387 int addr_size
= gdbarch_addr_bit (target_gdbarch ()) / 8;
4388 CORE_ADDR sym_addr
= BMSYMBOL_VALUE_ADDRESS (sym
);
4390 /* If this is a function address, return the start of code
4391 instead of any data function descriptor. */
4392 sym_addr
= gdbarch_convert_from_func_ptr_addr (target_gdbarch (),
4396 xsnprintf (msg
, get_remote_packet_size (), "qSymbol:%s:%s",
4397 phex_nz (sym_addr
, addr_size
), &reply
[8]);
4401 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4405 do_cleanups (old_chain
);
4408 static struct serial
*
4409 remote_serial_open (const char *name
)
4411 static int udp_warning
= 0;
4413 /* FIXME: Parsing NAME here is a hack. But we want to warn here instead
4414 of in ser-tcp.c, because it is the remote protocol assuming that the
4415 serial connection is reliable and not the serial connection promising
4417 if (!udp_warning
&& startswith (name
, "udp:"))
4419 warning (_("The remote protocol may be unreliable over UDP.\n"
4420 "Some events may be lost, rendering further debugging "
4425 return serial_open (name
);
4428 /* Inform the target of our permission settings. The permission flags
4429 work without this, but if the target knows the settings, it can do
4430 a couple things. First, it can add its own check, to catch cases
4431 that somehow manage to get by the permissions checks in target
4432 methods. Second, if the target is wired to disallow particular
4433 settings (for instance, a system in the field that is not set up to
4434 be able to stop at a breakpoint), it can object to any unavailable
4438 remote_set_permissions (struct target_ops
*self
)
4440 struct remote_state
*rs
= get_remote_state ();
4442 xsnprintf (rs
->buf
, get_remote_packet_size (), "QAllow:"
4443 "WriteReg:%x;WriteMem:%x;"
4444 "InsertBreak:%x;InsertTrace:%x;"
4445 "InsertFastTrace:%x;Stop:%x",
4446 may_write_registers
, may_write_memory
,
4447 may_insert_breakpoints
, may_insert_tracepoints
,
4448 may_insert_fast_tracepoints
, may_stop
);
4450 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4452 /* If the target didn't like the packet, warn the user. Do not try
4453 to undo the user's settings, that would just be maddening. */
4454 if (strcmp (rs
->buf
, "OK") != 0)
4455 warning (_("Remote refused setting permissions with: %s"), rs
->buf
);
4458 /* This type describes each known response to the qSupported
4460 struct protocol_feature
4462 /* The name of this protocol feature. */
4465 /* The default for this protocol feature. */
4466 enum packet_support default_support
;
4468 /* The function to call when this feature is reported, or after
4469 qSupported processing if the feature is not supported.
4470 The first argument points to this structure. The second
4471 argument indicates whether the packet requested support be
4472 enabled, disabled, or probed (or the default, if this function
4473 is being called at the end of processing and this feature was
4474 not reported). The third argument may be NULL; if not NULL, it
4475 is a NUL-terminated string taken from the packet following
4476 this feature's name and an equals sign. */
4477 void (*func
) (const struct protocol_feature
*, enum packet_support
,
4480 /* The corresponding packet for this feature. Only used if
4481 FUNC is remote_supported_packet. */
4486 remote_supported_packet (const struct protocol_feature
*feature
,
4487 enum packet_support support
,
4488 const char *argument
)
4492 warning (_("Remote qSupported response supplied an unexpected value for"
4493 " \"%s\"."), feature
->name
);
4497 remote_protocol_packets
[feature
->packet
].support
= support
;
4501 remote_packet_size (const struct protocol_feature
*feature
,
4502 enum packet_support support
, const char *value
)
4504 struct remote_state
*rs
= get_remote_state ();
4509 if (support
!= PACKET_ENABLE
)
4512 if (value
== NULL
|| *value
== '\0')
4514 warning (_("Remote target reported \"%s\" without a size."),
4520 packet_size
= strtol (value
, &value_end
, 16);
4521 if (errno
!= 0 || *value_end
!= '\0' || packet_size
< 0)
4523 warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."),
4524 feature
->name
, value
);
4528 /* Record the new maximum packet size. */
4529 rs
->explicit_packet_size
= packet_size
;
4532 static const struct protocol_feature remote_protocol_features
[] = {
4533 { "PacketSize", PACKET_DISABLE
, remote_packet_size
, -1 },
4534 { "qXfer:auxv:read", PACKET_DISABLE
, remote_supported_packet
,
4535 PACKET_qXfer_auxv
},
4536 { "qXfer:exec-file:read", PACKET_DISABLE
, remote_supported_packet
,
4537 PACKET_qXfer_exec_file
},
4538 { "qXfer:features:read", PACKET_DISABLE
, remote_supported_packet
,
4539 PACKET_qXfer_features
},
4540 { "qXfer:libraries:read", PACKET_DISABLE
, remote_supported_packet
,
4541 PACKET_qXfer_libraries
},
4542 { "qXfer:libraries-svr4:read", PACKET_DISABLE
, remote_supported_packet
,
4543 PACKET_qXfer_libraries_svr4
},
4544 { "augmented-libraries-svr4-read", PACKET_DISABLE
,
4545 remote_supported_packet
, PACKET_augmented_libraries_svr4_read_feature
},
4546 { "qXfer:memory-map:read", PACKET_DISABLE
, remote_supported_packet
,
4547 PACKET_qXfer_memory_map
},
4548 { "qXfer:spu:read", PACKET_DISABLE
, remote_supported_packet
,
4549 PACKET_qXfer_spu_read
},
4550 { "qXfer:spu:write", PACKET_DISABLE
, remote_supported_packet
,
4551 PACKET_qXfer_spu_write
},
4552 { "qXfer:osdata:read", PACKET_DISABLE
, remote_supported_packet
,
4553 PACKET_qXfer_osdata
},
4554 { "qXfer:threads:read", PACKET_DISABLE
, remote_supported_packet
,
4555 PACKET_qXfer_threads
},
4556 { "qXfer:traceframe-info:read", PACKET_DISABLE
, remote_supported_packet
,
4557 PACKET_qXfer_traceframe_info
},
4558 { "QPassSignals", PACKET_DISABLE
, remote_supported_packet
,
4559 PACKET_QPassSignals
},
4560 { "QCatchSyscalls", PACKET_DISABLE
, remote_supported_packet
,
4561 PACKET_QCatchSyscalls
},
4562 { "QProgramSignals", PACKET_DISABLE
, remote_supported_packet
,
4563 PACKET_QProgramSignals
},
4564 { "QStartNoAckMode", PACKET_DISABLE
, remote_supported_packet
,
4565 PACKET_QStartNoAckMode
},
4566 { "multiprocess", PACKET_DISABLE
, remote_supported_packet
,
4567 PACKET_multiprocess_feature
},
4568 { "QNonStop", PACKET_DISABLE
, remote_supported_packet
, PACKET_QNonStop
},
4569 { "qXfer:siginfo:read", PACKET_DISABLE
, remote_supported_packet
,
4570 PACKET_qXfer_siginfo_read
},
4571 { "qXfer:siginfo:write", PACKET_DISABLE
, remote_supported_packet
,
4572 PACKET_qXfer_siginfo_write
},
4573 { "ConditionalTracepoints", PACKET_DISABLE
, remote_supported_packet
,
4574 PACKET_ConditionalTracepoints
},
4575 { "ConditionalBreakpoints", PACKET_DISABLE
, remote_supported_packet
,
4576 PACKET_ConditionalBreakpoints
},
4577 { "BreakpointCommands", PACKET_DISABLE
, remote_supported_packet
,
4578 PACKET_BreakpointCommands
},
4579 { "FastTracepoints", PACKET_DISABLE
, remote_supported_packet
,
4580 PACKET_FastTracepoints
},
4581 { "StaticTracepoints", PACKET_DISABLE
, remote_supported_packet
,
4582 PACKET_StaticTracepoints
},
4583 {"InstallInTrace", PACKET_DISABLE
, remote_supported_packet
,
4584 PACKET_InstallInTrace
},
4585 { "DisconnectedTracing", PACKET_DISABLE
, remote_supported_packet
,
4586 PACKET_DisconnectedTracing_feature
},
4587 { "ReverseContinue", PACKET_DISABLE
, remote_supported_packet
,
4589 { "ReverseStep", PACKET_DISABLE
, remote_supported_packet
,
4591 { "TracepointSource", PACKET_DISABLE
, remote_supported_packet
,
4592 PACKET_TracepointSource
},
4593 { "QAllow", PACKET_DISABLE
, remote_supported_packet
,
4595 { "EnableDisableTracepoints", PACKET_DISABLE
, remote_supported_packet
,
4596 PACKET_EnableDisableTracepoints_feature
},
4597 { "qXfer:fdpic:read", PACKET_DISABLE
, remote_supported_packet
,
4598 PACKET_qXfer_fdpic
},
4599 { "qXfer:uib:read", PACKET_DISABLE
, remote_supported_packet
,
4601 { "QDisableRandomization", PACKET_DISABLE
, remote_supported_packet
,
4602 PACKET_QDisableRandomization
},
4603 { "QAgent", PACKET_DISABLE
, remote_supported_packet
, PACKET_QAgent
},
4604 { "QTBuffer:size", PACKET_DISABLE
,
4605 remote_supported_packet
, PACKET_QTBuffer_size
},
4606 { "tracenz", PACKET_DISABLE
, remote_supported_packet
, PACKET_tracenz_feature
},
4607 { "Qbtrace:off", PACKET_DISABLE
, remote_supported_packet
, PACKET_Qbtrace_off
},
4608 { "Qbtrace:bts", PACKET_DISABLE
, remote_supported_packet
, PACKET_Qbtrace_bts
},
4609 { "Qbtrace:pt", PACKET_DISABLE
, remote_supported_packet
, PACKET_Qbtrace_pt
},
4610 { "qXfer:btrace:read", PACKET_DISABLE
, remote_supported_packet
,
4611 PACKET_qXfer_btrace
},
4612 { "qXfer:btrace-conf:read", PACKET_DISABLE
, remote_supported_packet
,
4613 PACKET_qXfer_btrace_conf
},
4614 { "Qbtrace-conf:bts:size", PACKET_DISABLE
, remote_supported_packet
,
4615 PACKET_Qbtrace_conf_bts_size
},
4616 { "swbreak", PACKET_DISABLE
, remote_supported_packet
, PACKET_swbreak_feature
},
4617 { "hwbreak", PACKET_DISABLE
, remote_supported_packet
, PACKET_hwbreak_feature
},
4618 { "fork-events", PACKET_DISABLE
, remote_supported_packet
,
4619 PACKET_fork_event_feature
},
4620 { "vfork-events", PACKET_DISABLE
, remote_supported_packet
,
4621 PACKET_vfork_event_feature
},
4622 { "exec-events", PACKET_DISABLE
, remote_supported_packet
,
4623 PACKET_exec_event_feature
},
4624 { "Qbtrace-conf:pt:size", PACKET_DISABLE
, remote_supported_packet
,
4625 PACKET_Qbtrace_conf_pt_size
},
4626 { "vContSupported", PACKET_DISABLE
, remote_supported_packet
, PACKET_vContSupported
},
4627 { "QThreadEvents", PACKET_DISABLE
, remote_supported_packet
, PACKET_QThreadEvents
},
4628 { "no-resumed", PACKET_DISABLE
, remote_supported_packet
, PACKET_no_resumed
},
4631 static char *remote_support_xml
;
4633 /* Register string appended to "xmlRegisters=" in qSupported query. */
4636 register_remote_support_xml (const char *xml
)
4638 #if defined(HAVE_LIBEXPAT)
4639 if (remote_support_xml
== NULL
)
4640 remote_support_xml
= concat ("xmlRegisters=", xml
, (char *) NULL
);
4643 char *copy
= xstrdup (remote_support_xml
+ 13);
4644 char *p
= strtok (copy
, ",");
4648 if (strcmp (p
, xml
) == 0)
4655 while ((p
= strtok (NULL
, ",")) != NULL
);
4658 remote_support_xml
= reconcat (remote_support_xml
,
4659 remote_support_xml
, ",", xml
,
4666 remote_query_supported_append (char *msg
, const char *append
)
4669 return reconcat (msg
, msg
, ";", append
, (char *) NULL
);
4671 return xstrdup (append
);
4675 remote_query_supported (void)
4677 struct remote_state
*rs
= get_remote_state ();
4680 unsigned char seen
[ARRAY_SIZE (remote_protocol_features
)];
4682 /* The packet support flags are handled differently for this packet
4683 than for most others. We treat an error, a disabled packet, and
4684 an empty response identically: any features which must be reported
4685 to be used will be automatically disabled. An empty buffer
4686 accomplishes this, since that is also the representation for a list
4687 containing no features. */
4690 if (packet_support (PACKET_qSupported
) != PACKET_DISABLE
)
4693 struct cleanup
*old_chain
= make_cleanup (free_current_contents
, &q
);
4695 if (packet_set_cmd_state (PACKET_multiprocess_feature
) != AUTO_BOOLEAN_FALSE
)
4696 q
= remote_query_supported_append (q
, "multiprocess+");
4698 if (packet_set_cmd_state (PACKET_swbreak_feature
) != AUTO_BOOLEAN_FALSE
)
4699 q
= remote_query_supported_append (q
, "swbreak+");
4700 if (packet_set_cmd_state (PACKET_hwbreak_feature
) != AUTO_BOOLEAN_FALSE
)
4701 q
= remote_query_supported_append (q
, "hwbreak+");
4703 q
= remote_query_supported_append (q
, "qRelocInsn+");
4705 if (packet_set_cmd_state (PACKET_fork_event_feature
)
4706 != AUTO_BOOLEAN_FALSE
)
4707 q
= remote_query_supported_append (q
, "fork-events+");
4708 if (packet_set_cmd_state (PACKET_vfork_event_feature
)
4709 != AUTO_BOOLEAN_FALSE
)
4710 q
= remote_query_supported_append (q
, "vfork-events+");
4711 if (packet_set_cmd_state (PACKET_exec_event_feature
)
4712 != AUTO_BOOLEAN_FALSE
)
4713 q
= remote_query_supported_append (q
, "exec-events+");
4715 if (packet_set_cmd_state (PACKET_vContSupported
) != AUTO_BOOLEAN_FALSE
)
4716 q
= remote_query_supported_append (q
, "vContSupported+");
4718 if (packet_set_cmd_state (PACKET_QThreadEvents
) != AUTO_BOOLEAN_FALSE
)
4719 q
= remote_query_supported_append (q
, "QThreadEvents+");
4721 if (packet_set_cmd_state (PACKET_no_resumed
) != AUTO_BOOLEAN_FALSE
)
4722 q
= remote_query_supported_append (q
, "no-resumed+");
4724 /* Keep this one last to work around a gdbserver <= 7.10 bug in
4725 the qSupported:xmlRegisters=i386 handling. */
4726 if (remote_support_xml
!= NULL
)
4727 q
= remote_query_supported_append (q
, remote_support_xml
);
4729 q
= reconcat (q
, "qSupported:", q
, (char *) NULL
);
4732 do_cleanups (old_chain
);
4734 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4736 /* If an error occured, warn, but do not return - just reset the
4737 buffer to empty and go on to disable features. */
4738 if (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_qSupported
])
4741 warning (_("Remote failure reply: %s"), rs
->buf
);
4746 memset (seen
, 0, sizeof (seen
));
4751 enum packet_support is_supported
;
4752 char *p
, *end
, *name_end
, *value
;
4754 /* First separate out this item from the rest of the packet. If
4755 there's another item after this, we overwrite the separator
4756 (terminated strings are much easier to work with). */
4758 end
= strchr (p
, ';');
4761 end
= p
+ strlen (p
);
4771 warning (_("empty item in \"qSupported\" response"));
4776 name_end
= strchr (p
, '=');
4779 /* This is a name=value entry. */
4780 is_supported
= PACKET_ENABLE
;
4781 value
= name_end
+ 1;
4790 is_supported
= PACKET_ENABLE
;
4794 is_supported
= PACKET_DISABLE
;
4798 is_supported
= PACKET_SUPPORT_UNKNOWN
;
4802 warning (_("unrecognized item \"%s\" "
4803 "in \"qSupported\" response"), p
);
4809 for (i
= 0; i
< ARRAY_SIZE (remote_protocol_features
); i
++)
4810 if (strcmp (remote_protocol_features
[i
].name
, p
) == 0)
4812 const struct protocol_feature
*feature
;
4815 feature
= &remote_protocol_features
[i
];
4816 feature
->func (feature
, is_supported
, value
);
4821 /* If we increased the packet size, make sure to increase the global
4822 buffer size also. We delay this until after parsing the entire
4823 qSupported packet, because this is the same buffer we were
4825 if (rs
->buf_size
< rs
->explicit_packet_size
)
4827 rs
->buf_size
= rs
->explicit_packet_size
;
4828 rs
->buf
= (char *) xrealloc (rs
->buf
, rs
->buf_size
);
4831 /* Handle the defaults for unmentioned features. */
4832 for (i
= 0; i
< ARRAY_SIZE (remote_protocol_features
); i
++)
4835 const struct protocol_feature
*feature
;
4837 feature
= &remote_protocol_features
[i
];
4838 feature
->func (feature
, feature
->default_support
, NULL
);
4842 /* Remove any of the remote.c targets from target stack. Upper targets depend
4843 on it so remove them first. */
4846 remote_unpush_target (void)
4848 pop_all_targets_at_and_above (process_stratum
);
4852 remote_open_1 (const char *name
, int from_tty
,
4853 struct target_ops
*target
, int extended_p
)
4855 struct remote_state
*rs
= get_remote_state ();
4858 error (_("To open a remote debug connection, you need to specify what\n"
4859 "serial device is attached to the remote system\n"
4860 "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."));
4862 /* See FIXME above. */
4863 if (!target_async_permitted
)
4864 wait_forever_enabled_p
= 1;
4866 /* If we're connected to a running target, target_preopen will kill it.
4867 Ask this question first, before target_preopen has a chance to kill
4869 if (rs
->remote_desc
!= NULL
&& !have_inferiors ())
4872 && !query (_("Already connected to a remote target. Disconnect? ")))
4873 error (_("Still connected."));
4876 /* Here the possibly existing remote target gets unpushed. */
4877 target_preopen (from_tty
);
4879 /* Make sure we send the passed signals list the next time we resume. */
4880 xfree (rs
->last_pass_packet
);
4881 rs
->last_pass_packet
= NULL
;
4883 /* Make sure we send the program signals list the next time we
4885 xfree (rs
->last_program_signals_packet
);
4886 rs
->last_program_signals_packet
= NULL
;
4888 remote_fileio_reset ();
4889 reopen_exec_file ();
4892 rs
->remote_desc
= remote_serial_open (name
);
4893 if (!rs
->remote_desc
)
4894 perror_with_name (name
);
4896 if (baud_rate
!= -1)
4898 if (serial_setbaudrate (rs
->remote_desc
, baud_rate
))
4900 /* The requested speed could not be set. Error out to
4901 top level after closing remote_desc. Take care to
4902 set remote_desc to NULL to avoid closing remote_desc
4904 serial_close (rs
->remote_desc
);
4905 rs
->remote_desc
= NULL
;
4906 perror_with_name (name
);
4910 serial_setparity (rs
->remote_desc
, serial_parity
);
4911 serial_raw (rs
->remote_desc
);
4913 /* If there is something sitting in the buffer we might take it as a
4914 response to a command, which would be bad. */
4915 serial_flush_input (rs
->remote_desc
);
4919 puts_filtered ("Remote debugging using ");
4920 puts_filtered (name
);
4921 puts_filtered ("\n");
4923 push_target (target
); /* Switch to using remote target now. */
4925 /* Register extra event sources in the event loop. */
4926 remote_async_inferior_event_token
4927 = create_async_event_handler (remote_async_inferior_event_handler
,
4929 rs
->notif_state
= remote_notif_state_allocate ();
4931 /* Reset the target state; these things will be queried either by
4932 remote_query_supported or as they are needed. */
4933 reset_all_packet_configs_support ();
4934 rs
->cached_wait_status
= 0;
4935 rs
->explicit_packet_size
= 0;
4937 rs
->extended
= extended_p
;
4938 rs
->waiting_for_stop_reply
= 0;
4939 rs
->ctrlc_pending_p
= 0;
4941 rs
->general_thread
= not_sent_ptid
;
4942 rs
->continue_thread
= not_sent_ptid
;
4943 rs
->remote_traceframe_number
= -1;
4945 /* Probe for ability to use "ThreadInfo" query, as required. */
4946 rs
->use_threadinfo_query
= 1;
4947 rs
->use_threadextra_query
= 1;
4949 readahead_cache_invalidate ();
4951 if (target_async_permitted
)
4953 /* With this target we start out by owning the terminal. */
4954 remote_async_terminal_ours_p
= 1;
4956 /* FIXME: cagney/1999-09-23: During the initial connection it is
4957 assumed that the target is already ready and able to respond to
4958 requests. Unfortunately remote_start_remote() eventually calls
4959 wait_for_inferior() with no timeout. wait_forever_enabled_p gets
4960 around this. Eventually a mechanism that allows
4961 wait_for_inferior() to expect/get timeouts will be
4963 wait_forever_enabled_p
= 0;
4966 /* First delete any symbols previously loaded from shared libraries. */
4967 no_shared_libraries (NULL
, 0);
4970 init_thread_list ();
4972 /* Start the remote connection. If error() or QUIT, discard this
4973 target (we'd otherwise be in an inconsistent state) and then
4974 propogate the error on up the exception chain. This ensures that
4975 the caller doesn't stumble along blindly assuming that the
4976 function succeeded. The CLI doesn't have this problem but other
4977 UI's, such as MI do.
4979 FIXME: cagney/2002-05-19: Instead of re-throwing the exception,
4980 this function should return an error indication letting the
4981 caller restore the previous state. Unfortunately the command
4982 ``target remote'' is directly wired to this function making that
4983 impossible. On a positive note, the CLI side of this problem has
4984 been fixed - the function set_cmd_context() makes it possible for
4985 all the ``target ....'' commands to share a common callback
4986 function. See cli-dump.c. */
4991 remote_start_remote (from_tty
, target
, extended_p
);
4993 CATCH (ex
, RETURN_MASK_ALL
)
4995 /* Pop the partially set up target - unless something else did
4996 already before throwing the exception. */
4997 if (rs
->remote_desc
!= NULL
)
4998 remote_unpush_target ();
4999 if (target_async_permitted
)
5000 wait_forever_enabled_p
= 1;
5001 throw_exception (ex
);
5006 remote_btrace_reset ();
5008 if (target_async_permitted
)
5009 wait_forever_enabled_p
= 1;
5012 /* Detach the specified process. */
5015 remote_detach_pid (int pid
)
5017 struct remote_state
*rs
= get_remote_state ();
5019 if (remote_multi_process_p (rs
))
5020 xsnprintf (rs
->buf
, get_remote_packet_size (), "D;%x", pid
);
5022 strcpy (rs
->buf
, "D");
5025 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5027 if (rs
->buf
[0] == 'O' && rs
->buf
[1] == 'K')
5029 else if (rs
->buf
[0] == '\0')
5030 error (_("Remote doesn't know how to detach"));
5032 error (_("Can't detach process."));
5035 /* This detaches a program to which we previously attached, using
5036 inferior_ptid to identify the process. After this is done, GDB
5037 can be used to debug some other program. We better not have left
5038 any breakpoints in the target program or it'll die when it hits
5042 remote_detach_1 (const char *args
, int from_tty
)
5044 int pid
= ptid_get_pid (inferior_ptid
);
5045 struct remote_state
*rs
= get_remote_state ();
5046 struct thread_info
*tp
= find_thread_ptid (inferior_ptid
);
5050 error (_("Argument given to \"detach\" when remotely debugging."));
5052 if (!target_has_execution
)
5053 error (_("No process to detach from."));
5057 char *exec_file
= get_exec_file (0);
5058 if (exec_file
== NULL
)
5060 printf_unfiltered (_("Detaching from program: %s, %s\n"), exec_file
,
5061 target_pid_to_str (pid_to_ptid (pid
)));
5062 gdb_flush (gdb_stdout
);
5065 /* Tell the remote target to detach. */
5066 remote_detach_pid (pid
);
5068 /* Exit only if this is the only active inferior. */
5069 if (from_tty
&& !rs
->extended
&& number_of_live_inferiors () == 1)
5070 puts_filtered (_("Ending remote debugging.\n"));
5072 /* Check to see if we are detaching a fork parent. Note that if we
5073 are detaching a fork child, tp == NULL. */
5074 is_fork_parent
= (tp
!= NULL
5075 && tp
->pending_follow
.kind
== TARGET_WAITKIND_FORKED
);
5077 /* If doing detach-on-fork, we don't mourn, because that will delete
5078 breakpoints that should be available for the followed inferior. */
5079 if (!is_fork_parent
)
5080 target_mourn_inferior ();
5083 inferior_ptid
= null_ptid
;
5084 detach_inferior (pid
);
5089 remote_detach (struct target_ops
*ops
, const char *args
, int from_tty
)
5091 remote_detach_1 (args
, from_tty
);
5095 extended_remote_detach (struct target_ops
*ops
, const char *args
, int from_tty
)
5097 remote_detach_1 (args
, from_tty
);
5100 /* Target follow-fork function for remote targets. On entry, and
5101 at return, the current inferior is the fork parent.
5103 Note that although this is currently only used for extended-remote,
5104 it is named remote_follow_fork in anticipation of using it for the
5105 remote target as well. */
5108 remote_follow_fork (struct target_ops
*ops
, int follow_child
,
5111 struct remote_state
*rs
= get_remote_state ();
5112 enum target_waitkind kind
= inferior_thread ()->pending_follow
.kind
;
5114 if ((kind
== TARGET_WAITKIND_FORKED
&& remote_fork_event_p (rs
))
5115 || (kind
== TARGET_WAITKIND_VFORKED
&& remote_vfork_event_p (rs
)))
5117 /* When following the parent and detaching the child, we detach
5118 the child here. For the case of following the child and
5119 detaching the parent, the detach is done in the target-
5120 independent follow fork code in infrun.c. We can't use
5121 target_detach when detaching an unfollowed child because
5122 the client side doesn't know anything about the child. */
5123 if (detach_fork
&& !follow_child
)
5125 /* Detach the fork child. */
5129 child_ptid
= inferior_thread ()->pending_follow
.value
.related_pid
;
5130 child_pid
= ptid_get_pid (child_ptid
);
5132 remote_detach_pid (child_pid
);
5133 detach_inferior (child_pid
);
5139 /* Target follow-exec function for remote targets. Save EXECD_PATHNAME
5140 in the program space of the new inferior. On entry and at return the
5141 current inferior is the exec'ing inferior. INF is the new exec'd
5142 inferior, which may be the same as the exec'ing inferior unless
5143 follow-exec-mode is "new". */
5146 remote_follow_exec (struct target_ops
*ops
,
5147 struct inferior
*inf
, char *execd_pathname
)
5149 /* We know that this is a target file name, so if it has the "target:"
5150 prefix we strip it off before saving it in the program space. */
5151 if (is_target_filename (execd_pathname
))
5152 execd_pathname
+= strlen (TARGET_SYSROOT_PREFIX
);
5154 set_pspace_remote_exec_file (inf
->pspace
, execd_pathname
);
5157 /* Same as remote_detach, but don't send the "D" packet; just disconnect. */
5160 remote_disconnect (struct target_ops
*target
, const char *args
, int from_tty
)
5163 error (_("Argument given to \"disconnect\" when remotely debugging."));
5165 /* Make sure we unpush even the extended remote targets. Calling
5166 target_mourn_inferior won't unpush, and remote_mourn won't
5167 unpush if there is more than one inferior left. */
5168 unpush_target (target
);
5169 generic_mourn_inferior ();
5172 puts_filtered ("Ending remote debugging.\n");
5175 /* Attach to the process specified by ARGS. If FROM_TTY is non-zero,
5176 be chatty about it. */
5179 extended_remote_attach (struct target_ops
*target
, const char *args
,
5182 struct remote_state
*rs
= get_remote_state ();
5184 char *wait_status
= NULL
;
5186 pid
= parse_pid_to_attach (args
);
5188 /* Remote PID can be freely equal to getpid, do not check it here the same
5189 way as in other targets. */
5191 if (packet_support (PACKET_vAttach
) == PACKET_DISABLE
)
5192 error (_("This target does not support attaching to a process"));
5196 char *exec_file
= get_exec_file (0);
5199 printf_unfiltered (_("Attaching to program: %s, %s\n"), exec_file
,
5200 target_pid_to_str (pid_to_ptid (pid
)));
5202 printf_unfiltered (_("Attaching to %s\n"),
5203 target_pid_to_str (pid_to_ptid (pid
)));
5205 gdb_flush (gdb_stdout
);
5208 xsnprintf (rs
->buf
, get_remote_packet_size (), "vAttach;%x", pid
);
5210 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5212 switch (packet_ok (rs
->buf
,
5213 &remote_protocol_packets
[PACKET_vAttach
]))
5216 if (!target_is_non_stop_p ())
5218 /* Save the reply for later. */
5219 wait_status
= (char *) alloca (strlen (rs
->buf
) + 1);
5220 strcpy (wait_status
, rs
->buf
);
5222 else if (strcmp (rs
->buf
, "OK") != 0)
5223 error (_("Attaching to %s failed with: %s"),
5224 target_pid_to_str (pid_to_ptid (pid
)),
5227 case PACKET_UNKNOWN
:
5228 error (_("This target does not support attaching to a process"));
5230 error (_("Attaching to %s failed"),
5231 target_pid_to_str (pid_to_ptid (pid
)));
5234 set_current_inferior (remote_add_inferior (0, pid
, 1, 0));
5236 inferior_ptid
= pid_to_ptid (pid
);
5238 if (target_is_non_stop_p ())
5240 struct thread_info
*thread
;
5242 /* Get list of threads. */
5243 remote_update_thread_list (target
);
5245 thread
= first_thread_of_process (pid
);
5247 inferior_ptid
= thread
->ptid
;
5249 inferior_ptid
= pid_to_ptid (pid
);
5251 /* Invalidate our notion of the remote current thread. */
5252 record_currthread (rs
, minus_one_ptid
);
5256 /* Now, if we have thread information, update inferior_ptid. */
5257 inferior_ptid
= remote_current_thread (inferior_ptid
);
5259 /* Add the main thread to the thread list. */
5260 add_thread_silent (inferior_ptid
);
5263 /* Next, if the target can specify a description, read it. We do
5264 this before anything involving memory or registers. */
5265 target_find_description ();
5267 if (!target_is_non_stop_p ())
5269 /* Use the previously fetched status. */
5270 gdb_assert (wait_status
!= NULL
);
5272 if (target_can_async_p ())
5274 struct notif_event
*reply
5275 = remote_notif_parse (¬if_client_stop
, wait_status
);
5277 push_stop_reply ((struct stop_reply
*) reply
);
5283 gdb_assert (wait_status
!= NULL
);
5284 strcpy (rs
->buf
, wait_status
);
5285 rs
->cached_wait_status
= 1;
5289 gdb_assert (wait_status
== NULL
);
5292 /* Implementation of the to_post_attach method. */
5295 extended_remote_post_attach (struct target_ops
*ops
, int pid
)
5297 /* Get text, data & bss offsets. */
5300 /* In certain cases GDB might not have had the chance to start
5301 symbol lookup up until now. This could happen if the debugged
5302 binary is not using shared libraries, the vsyscall page is not
5303 present (on Linux) and the binary itself hadn't changed since the
5304 debugging process was started. */
5305 if (symfile_objfile
!= NULL
)
5306 remote_check_symbols();
5310 /* Check for the availability of vCont. This function should also check
5314 remote_vcont_probe (struct remote_state
*rs
)
5318 strcpy (rs
->buf
, "vCont?");
5320 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5323 /* Make sure that the features we assume are supported. */
5324 if (startswith (buf
, "vCont"))
5327 int support_c
, support_C
;
5329 rs
->supports_vCont
.s
= 0;
5330 rs
->supports_vCont
.S
= 0;
5333 rs
->supports_vCont
.t
= 0;
5334 rs
->supports_vCont
.r
= 0;
5335 while (p
&& *p
== ';')
5338 if (*p
== 's' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
5339 rs
->supports_vCont
.s
= 1;
5340 else if (*p
== 'S' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
5341 rs
->supports_vCont
.S
= 1;
5342 else if (*p
== 'c' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
5344 else if (*p
== 'C' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
5346 else if (*p
== 't' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
5347 rs
->supports_vCont
.t
= 1;
5348 else if (*p
== 'r' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
5349 rs
->supports_vCont
.r
= 1;
5351 p
= strchr (p
, ';');
5354 /* If c, and C are not all supported, we can't use vCont. Clearing
5355 BUF will make packet_ok disable the packet. */
5356 if (!support_c
|| !support_C
)
5360 packet_ok (buf
, &remote_protocol_packets
[PACKET_vCont
]);
5363 /* Helper function for building "vCont" resumptions. Write a
5364 resumption to P. ENDP points to one-passed-the-end of the buffer
5365 we're allowed to write to. Returns BUF+CHARACTERS_WRITTEN. The
5366 thread to be resumed is PTID; STEP and SIGGNAL indicate whether the
5367 resumed thread should be single-stepped and/or signalled. If PTID
5368 equals minus_one_ptid, then all threads are resumed; if PTID
5369 represents a process, then all threads of the process are resumed;
5370 the thread to be stepped and/or signalled is given in the global
5374 append_resumption (char *p
, char *endp
,
5375 ptid_t ptid
, int step
, enum gdb_signal siggnal
)
5377 struct remote_state
*rs
= get_remote_state ();
5379 if (step
&& siggnal
!= GDB_SIGNAL_0
)
5380 p
+= xsnprintf (p
, endp
- p
, ";S%02x", siggnal
);
5382 /* GDB is willing to range step. */
5383 && use_range_stepping
5384 /* Target supports range stepping. */
5385 && rs
->supports_vCont
.r
5386 /* We don't currently support range stepping multiple
5387 threads with a wildcard (though the protocol allows it,
5388 so stubs shouldn't make an active effort to forbid
5390 && !(remote_multi_process_p (rs
) && ptid_is_pid (ptid
)))
5392 struct thread_info
*tp
;
5394 if (ptid_equal (ptid
, minus_one_ptid
))
5396 /* If we don't know about the target thread's tid, then
5397 we're resuming magic_null_ptid (see caller). */
5398 tp
= find_thread_ptid (magic_null_ptid
);
5401 tp
= find_thread_ptid (ptid
);
5402 gdb_assert (tp
!= NULL
);
5404 if (tp
->control
.may_range_step
)
5406 int addr_size
= gdbarch_addr_bit (target_gdbarch ()) / 8;
5408 p
+= xsnprintf (p
, endp
- p
, ";r%s,%s",
5409 phex_nz (tp
->control
.step_range_start
,
5411 phex_nz (tp
->control
.step_range_end
,
5415 p
+= xsnprintf (p
, endp
- p
, ";s");
5418 p
+= xsnprintf (p
, endp
- p
, ";s");
5419 else if (siggnal
!= GDB_SIGNAL_0
)
5420 p
+= xsnprintf (p
, endp
- p
, ";C%02x", siggnal
);
5422 p
+= xsnprintf (p
, endp
- p
, ";c");
5424 if (remote_multi_process_p (rs
) && ptid_is_pid (ptid
))
5428 /* All (-1) threads of process. */
5429 nptid
= ptid_build (ptid_get_pid (ptid
), -1, 0);
5431 p
+= xsnprintf (p
, endp
- p
, ":");
5432 p
= write_ptid (p
, endp
, nptid
);
5434 else if (!ptid_equal (ptid
, minus_one_ptid
))
5436 p
+= xsnprintf (p
, endp
- p
, ":");
5437 p
= write_ptid (p
, endp
, ptid
);
5443 /* Clear the thread's private info on resume. */
5446 resume_clear_thread_private_info (struct thread_info
*thread
)
5448 if (thread
->priv
!= NULL
)
5450 thread
->priv
->stop_reason
= TARGET_STOPPED_BY_NO_REASON
;
5451 thread
->priv
->watch_data_address
= 0;
5455 /* Append a vCont continue-with-signal action for threads that have a
5456 non-zero stop signal. */
5459 append_pending_thread_resumptions (char *p
, char *endp
, ptid_t ptid
)
5461 struct thread_info
*thread
;
5463 ALL_NON_EXITED_THREADS (thread
)
5464 if (ptid_match (thread
->ptid
, ptid
)
5465 && !ptid_equal (inferior_ptid
, thread
->ptid
)
5466 && thread
->suspend
.stop_signal
!= GDB_SIGNAL_0
)
5468 p
= append_resumption (p
, endp
, thread
->ptid
,
5469 0, thread
->suspend
.stop_signal
);
5470 thread
->suspend
.stop_signal
= GDB_SIGNAL_0
;
5471 resume_clear_thread_private_info (thread
);
5477 /* Resume the remote inferior by using a "vCont" packet. The thread
5478 to be resumed is PTID; STEP and SIGGNAL indicate whether the
5479 resumed thread should be single-stepped and/or signalled. If PTID
5480 equals minus_one_ptid, then all threads are resumed; the thread to
5481 be stepped and/or signalled is given in the global INFERIOR_PTID.
5482 This function returns non-zero iff it resumes the inferior.
5484 This function issues a strict subset of all possible vCont commands at the
5488 remote_vcont_resume (ptid_t ptid
, int step
, enum gdb_signal siggnal
)
5490 struct remote_state
*rs
= get_remote_state ();
5494 if (packet_support (PACKET_vCont
) == PACKET_SUPPORT_UNKNOWN
)
5495 remote_vcont_probe (rs
);
5497 if (packet_support (PACKET_vCont
) == PACKET_DISABLE
)
5501 endp
= rs
->buf
+ get_remote_packet_size ();
5503 /* If we could generate a wider range of packets, we'd have to worry
5504 about overflowing BUF. Should there be a generic
5505 "multi-part-packet" packet? */
5507 p
+= xsnprintf (p
, endp
- p
, "vCont");
5509 if (ptid_equal (ptid
, magic_null_ptid
))
5511 /* MAGIC_NULL_PTID means that we don't have any active threads,
5512 so we don't have any TID numbers the inferior will
5513 understand. Make sure to only send forms that do not specify
5515 append_resumption (p
, endp
, minus_one_ptid
, step
, siggnal
);
5517 else if (ptid_equal (ptid
, minus_one_ptid
) || ptid_is_pid (ptid
))
5519 /* Resume all threads (of all processes, or of a single
5520 process), with preference for INFERIOR_PTID. This assumes
5521 inferior_ptid belongs to the set of all threads we are about
5523 if (step
|| siggnal
!= GDB_SIGNAL_0
)
5525 /* Step inferior_ptid, with or without signal. */
5526 p
= append_resumption (p
, endp
, inferior_ptid
, step
, siggnal
);
5529 /* Also pass down any pending signaled resumption for other
5530 threads not the current. */
5531 p
= append_pending_thread_resumptions (p
, endp
, ptid
);
5533 /* And continue others without a signal. */
5534 append_resumption (p
, endp
, ptid
, /*step=*/ 0, GDB_SIGNAL_0
);
5538 /* Scheduler locking; resume only PTID. */
5539 append_resumption (p
, endp
, ptid
, step
, siggnal
);
5542 gdb_assert (strlen (rs
->buf
) < get_remote_packet_size ());
5545 if (target_is_non_stop_p ())
5547 /* In non-stop, the stub replies to vCont with "OK". The stop
5548 reply will be reported asynchronously by means of a `%Stop'
5550 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5551 if (strcmp (rs
->buf
, "OK") != 0)
5552 error (_("Unexpected vCont reply in non-stop mode: %s"), rs
->buf
);
5558 /* Tell the remote machine to resume. */
5561 remote_resume (struct target_ops
*ops
,
5562 ptid_t ptid
, int step
, enum gdb_signal siggnal
)
5564 struct remote_state
*rs
= get_remote_state ();
5566 struct thread_info
*thread
;
5568 /* In all-stop, we can't mark REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN
5569 (explained in remote-notif.c:handle_notification) so
5570 remote_notif_process is not called. We need find a place where
5571 it is safe to start a 'vNotif' sequence. It is good to do it
5572 before resuming inferior, because inferior was stopped and no RSP
5573 traffic at that moment. */
5574 if (!target_is_non_stop_p ())
5575 remote_notif_process (rs
->notif_state
, ¬if_client_stop
);
5577 rs
->last_sent_signal
= siggnal
;
5578 rs
->last_sent_step
= step
;
5580 /* The vCont packet doesn't need to specify threads via Hc. */
5581 /* No reverse support (yet) for vCont. */
5582 if (execution_direction
!= EXEC_REVERSE
)
5583 if (remote_vcont_resume (ptid
, step
, siggnal
))
5586 /* All other supported resume packets do use Hc, so set the continue
5588 if (ptid_equal (ptid
, minus_one_ptid
))
5589 set_continue_thread (any_thread_ptid
);
5591 set_continue_thread (ptid
);
5593 ALL_NON_EXITED_THREADS (thread
)
5594 resume_clear_thread_private_info (thread
);
5597 if (execution_direction
== EXEC_REVERSE
)
5599 /* We don't pass signals to the target in reverse exec mode. */
5600 if (info_verbose
&& siggnal
!= GDB_SIGNAL_0
)
5601 warning (_(" - Can't pass signal %d to target in reverse: ignored."),
5604 if (step
&& packet_support (PACKET_bs
) == PACKET_DISABLE
)
5605 error (_("Remote reverse-step not supported."));
5606 if (!step
&& packet_support (PACKET_bc
) == PACKET_DISABLE
)
5607 error (_("Remote reverse-continue not supported."));
5609 strcpy (buf
, step
? "bs" : "bc");
5611 else if (siggnal
!= GDB_SIGNAL_0
)
5613 buf
[0] = step
? 'S' : 'C';
5614 buf
[1] = tohex (((int) siggnal
>> 4) & 0xf);
5615 buf
[2] = tohex (((int) siggnal
) & 0xf);
5619 strcpy (buf
, step
? "s" : "c");
5624 /* We are about to start executing the inferior, let's register it
5625 with the event loop. NOTE: this is the one place where all the
5626 execution commands end up. We could alternatively do this in each
5627 of the execution commands in infcmd.c. */
5628 /* FIXME: ezannoni 1999-09-28: We may need to move this out of here
5629 into infcmd.c in order to allow inferior function calls to work
5630 NOT asynchronously. */
5631 if (target_can_async_p ())
5634 /* We've just told the target to resume. The remote server will
5635 wait for the inferior to stop, and then send a stop reply. In
5636 the mean time, we can't start another command/query ourselves
5637 because the stub wouldn't be ready to process it. This applies
5638 only to the base all-stop protocol, however. In non-stop (which
5639 only supports vCont), the stub replies with an "OK", and is
5640 immediate able to process further serial input. */
5641 if (!target_is_non_stop_p ())
5642 rs
->waiting_for_stop_reply
= 1;
5646 /* Set up the signal handler for SIGINT, while the target is
5647 executing, ovewriting the 'regular' SIGINT signal handler. */
5649 async_initialize_sigint_signal_handler (void)
5651 signal (SIGINT
, async_handle_remote_sigint
);
5654 /* Signal handler for SIGINT, while the target is executing. */
5656 async_handle_remote_sigint (int sig
)
5658 signal (sig
, async_handle_remote_sigint_twice
);
5659 /* Note we need to go through gdb_call_async_signal_handler in order
5660 to wake up the event loop on Windows. */
5661 gdb_call_async_signal_handler (async_sigint_remote_token
, 0);
5664 /* Signal handler for SIGINT, installed after SIGINT has already been
5665 sent once. It will take effect the second time that the user sends
5668 async_handle_remote_sigint_twice (int sig
)
5670 signal (sig
, async_handle_remote_sigint
);
5671 /* See note in async_handle_remote_sigint. */
5672 gdb_call_async_signal_handler (async_sigint_remote_twice_token
, 0);
5675 /* Implementation of to_check_pending_interrupt. */
5678 remote_check_pending_interrupt (struct target_ops
*self
)
5680 struct async_signal_handler
*token
= async_sigint_remote_twice_token
;
5682 if (async_signal_handler_is_marked (token
))
5684 clear_async_signal_handler (token
);
5685 call_async_signal_handler (token
);
5689 /* Perform the real interruption of the target execution, in response
5692 async_remote_interrupt (gdb_client_data arg
)
5695 fprintf_unfiltered (gdb_stdlog
, "async_remote_interrupt called\n");
5697 target_interrupt (inferior_ptid
);
5700 /* Perform interrupt, if the first attempt did not succeed. Just give
5701 up on the target alltogether. */
5703 async_remote_interrupt_twice (gdb_client_data arg
)
5706 fprintf_unfiltered (gdb_stdlog
, "async_remote_interrupt_twice called\n");
5711 /* Reinstall the usual SIGINT handlers, after the target has
5714 async_cleanup_sigint_signal_handler (void *dummy
)
5716 signal (SIGINT
, handle_sigint
);
5719 /* Send ^C to target to halt it. Target will respond, and send us a
5721 static void (*ofunc
) (int);
5723 /* The command line interface's interrupt routine. This function is installed
5724 as a signal handler for SIGINT. The first time a user requests an
5725 interrupt, we call remote_interrupt to send a break or ^C. If there is no
5726 response from the target (it didn't stop when the user requested it),
5727 we ask the user if he'd like to detach from the target. */
5730 sync_remote_interrupt (int signo
)
5732 /* If this doesn't work, try more severe steps. */
5733 signal (signo
, sync_remote_interrupt_twice
);
5735 gdb_call_async_signal_handler (async_sigint_remote_token
, 1);
5738 /* The user typed ^C twice. */
5741 sync_remote_interrupt_twice (int signo
)
5743 signal (signo
, ofunc
);
5744 gdb_call_async_signal_handler (async_sigint_remote_twice_token
, 1);
5745 signal (signo
, sync_remote_interrupt
);
5748 /* Non-stop version of target_stop. Uses `vCont;t' to stop a remote
5749 thread, all threads of a remote process, or all threads of all
5753 remote_stop_ns (ptid_t ptid
)
5755 struct remote_state
*rs
= get_remote_state ();
5757 char *endp
= rs
->buf
+ get_remote_packet_size ();
5759 if (packet_support (PACKET_vCont
) == PACKET_SUPPORT_UNKNOWN
)
5760 remote_vcont_probe (rs
);
5762 if (!rs
->supports_vCont
.t
)
5763 error (_("Remote server does not support stopping threads"));
5765 if (ptid_equal (ptid
, minus_one_ptid
)
5766 || (!remote_multi_process_p (rs
) && ptid_is_pid (ptid
)))
5767 p
+= xsnprintf (p
, endp
- p
, "vCont;t");
5772 p
+= xsnprintf (p
, endp
- p
, "vCont;t:");
5774 if (ptid_is_pid (ptid
))
5775 /* All (-1) threads of process. */
5776 nptid
= ptid_build (ptid_get_pid (ptid
), -1, 0);
5779 /* Small optimization: if we already have a stop reply for
5780 this thread, no use in telling the stub we want this
5782 if (peek_stop_reply (ptid
))
5788 write_ptid (p
, endp
, nptid
);
5791 /* In non-stop, we get an immediate OK reply. The stop reply will
5792 come in asynchronously by notification. */
5794 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5795 if (strcmp (rs
->buf
, "OK") != 0)
5796 error (_("Stopping %s failed: %s"), target_pid_to_str (ptid
), rs
->buf
);
5799 /* All-stop version of target_interrupt. Sends a break or a ^C to
5800 interrupt the remote target. It is undefined which thread of which
5801 process reports the interrupt. */
5804 remote_interrupt_as (void)
5806 struct remote_state
*rs
= get_remote_state ();
5808 rs
->ctrlc_pending_p
= 1;
5810 /* If the inferior is stopped already, but the core didn't know
5811 about it yet, just ignore the request. The cached wait status
5812 will be collected in remote_wait. */
5813 if (rs
->cached_wait_status
)
5816 /* Send interrupt_sequence to remote target. */
5817 send_interrupt_sequence ();
5820 /* Non-stop version of target_interrupt. Uses `vCtrlC' to interrupt
5821 the remote target. It is undefined which thread of which process
5822 reports the interrupt. Returns true if the packet is supported by
5823 the server, false otherwise. */
5826 remote_interrupt_ns (void)
5828 struct remote_state
*rs
= get_remote_state ();
5830 char *endp
= rs
->buf
+ get_remote_packet_size ();
5832 xsnprintf (p
, endp
- p
, "vCtrlC");
5834 /* In non-stop, we get an immediate OK reply. The stop reply will
5835 come in asynchronously by notification. */
5837 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5839 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_vCtrlC
]))
5843 case PACKET_UNKNOWN
:
5846 error (_("Interrupting target failed: %s"), rs
->buf
);
5852 /* Implement the to_stop function for the remote targets. */
5855 remote_stop (struct target_ops
*self
, ptid_t ptid
)
5858 fprintf_unfiltered (gdb_stdlog
, "remote_stop called\n");
5860 if (target_is_non_stop_p ())
5861 remote_stop_ns (ptid
);
5864 /* We don't currently have a way to transparently pause the
5865 remote target in all-stop mode. Interrupt it instead. */
5866 remote_interrupt_as ();
5870 /* Implement the to_interrupt function for the remote targets. */
5873 remote_interrupt (struct target_ops
*self
, ptid_t ptid
)
5876 fprintf_unfiltered (gdb_stdlog
, "remote_interrupt called\n");
5880 /* In non-stop mode, we always stop with no signal instead. */
5881 remote_stop_ns (ptid
);
5885 /* In all-stop, we emulate ^C-ing the remote target's
5887 if (target_is_non_stop_p ())
5889 if (!remote_interrupt_ns ())
5891 /* No support for ^C-ing the remote target. Stop it
5892 (with no signal) instead. */
5893 remote_stop_ns (ptid
);
5897 remote_interrupt_as ();
5901 /* Ask the user what to do when an interrupt is received. */
5904 interrupt_query (void)
5906 struct remote_state
*rs
= get_remote_state ();
5907 struct cleanup
*old_chain
;
5909 old_chain
= make_cleanup_restore_target_terminal ();
5910 target_terminal_ours ();
5912 if (rs
->waiting_for_stop_reply
&& rs
->ctrlc_pending_p
)
5914 if (query (_("The target is not responding to interrupt requests.\n"
5915 "Stop debugging it? ")))
5917 remote_unpush_target ();
5918 throw_error (TARGET_CLOSE_ERROR
, _("Disconnected from target."));
5923 if (query (_("Interrupted while waiting for the program.\n"
5924 "Give up waiting? ")))
5928 do_cleanups (old_chain
);
5931 /* Enable/disable target terminal ownership. Most targets can use
5932 terminal groups to control terminal ownership. Remote targets are
5933 different in that explicit transfer of ownership to/from GDB/target
5937 remote_terminal_inferior (struct target_ops
*self
)
5939 if (!target_async_permitted
)
5940 /* Nothing to do. */
5943 /* FIXME: cagney/1999-09-27: Make calls to target_terminal_*()
5944 idempotent. The event-loop GDB talking to an asynchronous target
5945 with a synchronous command calls this function from both
5946 event-top.c and infrun.c/infcmd.c. Once GDB stops trying to
5947 transfer the terminal to the target when it shouldn't this guard
5949 if (!remote_async_terminal_ours_p
)
5951 delete_file_handler (input_fd
);
5952 remote_async_terminal_ours_p
= 0;
5953 async_initialize_sigint_signal_handler ();
5954 /* NOTE: At this point we could also register our selves as the
5955 recipient of all input. Any characters typed could then be
5956 passed on down to the target. */
5960 remote_terminal_ours (struct target_ops
*self
)
5962 if (!target_async_permitted
)
5963 /* Nothing to do. */
5966 /* See FIXME in remote_terminal_inferior. */
5967 if (remote_async_terminal_ours_p
)
5969 async_cleanup_sigint_signal_handler (NULL
);
5970 add_file_handler (input_fd
, stdin_event_handler
, 0);
5971 remote_async_terminal_ours_p
= 1;
5975 remote_console_output (char *msg
)
5979 for (p
= msg
; p
[0] && p
[1]; p
+= 2)
5982 char c
= fromhex (p
[0]) * 16 + fromhex (p
[1]);
5986 fputs_unfiltered (tb
, gdb_stdtarg
);
5988 gdb_flush (gdb_stdtarg
);
5991 typedef struct cached_reg
5994 gdb_byte data
[MAX_REGISTER_SIZE
];
5997 DEF_VEC_O(cached_reg_t
);
5999 typedef struct stop_reply
6001 struct notif_event base
;
6003 /* The identifier of the thread about this event */
6006 /* The remote state this event is associated with. When the remote
6007 connection, represented by a remote_state object, is closed,
6008 all the associated stop_reply events should be released. */
6009 struct remote_state
*rs
;
6011 struct target_waitstatus ws
;
6013 /* Expedited registers. This makes remote debugging a bit more
6014 efficient for those targets that provide critical registers as
6015 part of their normal status mechanism (as another roundtrip to
6016 fetch them is avoided). */
6017 VEC(cached_reg_t
) *regcache
;
6019 enum target_stop_reason stop_reason
;
6021 CORE_ADDR watch_data_address
;
6026 DECLARE_QUEUE_P (stop_reply_p
);
6027 DEFINE_QUEUE_P (stop_reply_p
);
6028 /* The list of already fetched and acknowledged stop events. This
6029 queue is used for notification Stop, and other notifications
6030 don't need queue for their events, because the notification events
6031 of Stop can't be consumed immediately, so that events should be
6032 queued first, and be consumed by remote_wait_{ns,as} one per
6033 time. Other notifications can consume their events immediately,
6034 so queue is not needed for them. */
6035 static QUEUE (stop_reply_p
) *stop_reply_queue
;
6038 stop_reply_xfree (struct stop_reply
*r
)
6040 notif_event_xfree ((struct notif_event
*) r
);
6043 /* Return the length of the stop reply queue. */
6046 stop_reply_queue_length (void)
6048 return QUEUE_length (stop_reply_p
, stop_reply_queue
);
6052 remote_notif_stop_parse (struct notif_client
*self
, char *buf
,
6053 struct notif_event
*event
)
6055 remote_parse_stop_reply (buf
, (struct stop_reply
*) event
);
6059 remote_notif_stop_ack (struct notif_client
*self
, char *buf
,
6060 struct notif_event
*event
)
6062 struct stop_reply
*stop_reply
= (struct stop_reply
*) event
;
6065 putpkt ((char *) self
->ack_command
);
6067 if (stop_reply
->ws
.kind
== TARGET_WAITKIND_IGNORE
)
6068 /* We got an unknown stop reply. */
6069 error (_("Unknown stop reply"));
6071 push_stop_reply (stop_reply
);
6075 remote_notif_stop_can_get_pending_events (struct notif_client
*self
)
6077 /* We can't get pending events in remote_notif_process for
6078 notification stop, and we have to do this in remote_wait_ns
6079 instead. If we fetch all queued events from stub, remote stub
6080 may exit and we have no chance to process them back in
6082 mark_async_event_handler (remote_async_inferior_event_token
);
6087 stop_reply_dtr (struct notif_event
*event
)
6089 struct stop_reply
*r
= (struct stop_reply
*) event
;
6091 VEC_free (cached_reg_t
, r
->regcache
);
6094 static struct notif_event
*
6095 remote_notif_stop_alloc_reply (void)
6097 /* We cast to a pointer to the "base class". */
6098 struct notif_event
*r
= (struct notif_event
*) XNEW (struct stop_reply
);
6100 r
->dtr
= stop_reply_dtr
;
6105 /* A client of notification Stop. */
6107 struct notif_client notif_client_stop
=
6111 remote_notif_stop_parse
,
6112 remote_notif_stop_ack
,
6113 remote_notif_stop_can_get_pending_events
,
6114 remote_notif_stop_alloc_reply
,
6118 /* A parameter to pass data in and out. */
6120 struct queue_iter_param
6123 struct stop_reply
*output
;
6126 /* Determine if THREAD is a pending fork parent thread. ARG contains
6127 the pid of the process that owns the threads we want to check, or
6128 -1 if we want to check all threads. */
6131 is_pending_fork_parent (struct target_waitstatus
*ws
, int event_pid
,
6134 if (ws
->kind
== TARGET_WAITKIND_FORKED
6135 || ws
->kind
== TARGET_WAITKIND_VFORKED
)
6137 if (event_pid
== -1 || event_pid
== ptid_get_pid (thread_ptid
))
6144 /* Check whether EVENT is a fork event, and if it is, remove the
6145 fork child from the context list passed in DATA. */
6148 remove_child_of_pending_fork (QUEUE (stop_reply_p
) *q
,
6149 QUEUE_ITER (stop_reply_p
) *iter
,
6153 struct queue_iter_param
*param
= (struct queue_iter_param
*) data
;
6154 struct threads_listing_context
*context
6155 = (struct threads_listing_context
*) param
->input
;
6157 if (event
->ws
.kind
== TARGET_WAITKIND_FORKED
6158 || event
->ws
.kind
== TARGET_WAITKIND_VFORKED
6159 || event
->ws
.kind
== TARGET_WAITKIND_THREAD_EXITED
)
6160 threads_listing_context_remove (&event
->ws
, context
);
6165 /* If CONTEXT contains any fork child threads that have not been
6166 reported yet, remove them from the CONTEXT list. If such a
6167 thread exists it is because we are stopped at a fork catchpoint
6168 and have not yet called follow_fork, which will set up the
6169 host-side data structures for the new process. */
6172 remove_new_fork_children (struct threads_listing_context
*context
)
6174 struct thread_info
* thread
;
6176 struct notif_client
*notif
= ¬if_client_stop
;
6177 struct queue_iter_param param
;
6179 /* For any threads stopped at a fork event, remove the corresponding
6180 fork child threads from the CONTEXT list. */
6181 ALL_NON_EXITED_THREADS (thread
)
6183 struct target_waitstatus
*ws
= &thread
->pending_follow
;
6185 if (is_pending_fork_parent (ws
, pid
, thread
->ptid
))
6187 threads_listing_context_remove (ws
, context
);
6191 /* Check for any pending fork events (not reported or processed yet)
6192 in process PID and remove those fork child threads from the
6193 CONTEXT list as well. */
6194 remote_notif_get_pending_events (notif
);
6195 param
.input
= context
;
6196 param
.output
= NULL
;
6197 QUEUE_iterate (stop_reply_p
, stop_reply_queue
,
6198 remove_child_of_pending_fork
, ¶m
);
6201 /* Remove stop replies in the queue if its pid is equal to the given
6205 remove_stop_reply_for_inferior (QUEUE (stop_reply_p
) *q
,
6206 QUEUE_ITER (stop_reply_p
) *iter
,
6210 struct queue_iter_param
*param
= (struct queue_iter_param
*) data
;
6211 struct inferior
*inf
= (struct inferior
*) param
->input
;
6213 if (ptid_get_pid (event
->ptid
) == inf
->pid
)
6215 stop_reply_xfree (event
);
6216 QUEUE_remove_elem (stop_reply_p
, q
, iter
);
6222 /* Discard all pending stop replies of inferior INF. */
6225 discard_pending_stop_replies (struct inferior
*inf
)
6228 struct queue_iter_param param
;
6229 struct stop_reply
*reply
;
6230 struct remote_state
*rs
= get_remote_state ();
6231 struct remote_notif_state
*rns
= rs
->notif_state
;
6233 /* This function can be notified when an inferior exists. When the
6234 target is not remote, the notification state is NULL. */
6235 if (rs
->remote_desc
== NULL
)
6238 reply
= (struct stop_reply
*) rns
->pending_event
[notif_client_stop
.id
];
6240 /* Discard the in-flight notification. */
6241 if (reply
!= NULL
&& ptid_get_pid (reply
->ptid
) == inf
->pid
)
6243 stop_reply_xfree (reply
);
6244 rns
->pending_event
[notif_client_stop
.id
] = NULL
;
6248 param
.output
= NULL
;
6249 /* Discard the stop replies we have already pulled with
6251 QUEUE_iterate (stop_reply_p
, stop_reply_queue
,
6252 remove_stop_reply_for_inferior
, ¶m
);
6255 /* If its remote state is equal to the given remote state,
6256 remove EVENT from the stop reply queue. */
6259 remove_stop_reply_of_remote_state (QUEUE (stop_reply_p
) *q
,
6260 QUEUE_ITER (stop_reply_p
) *iter
,
6264 struct queue_iter_param
*param
= (struct queue_iter_param
*) data
;
6265 struct remote_state
*rs
= (struct remote_state
*) param
->input
;
6267 if (event
->rs
== rs
)
6269 stop_reply_xfree (event
);
6270 QUEUE_remove_elem (stop_reply_p
, q
, iter
);
6276 /* Discard the stop replies for RS in stop_reply_queue. */
6279 discard_pending_stop_replies_in_queue (struct remote_state
*rs
)
6281 struct queue_iter_param param
;
6284 param
.output
= NULL
;
6285 /* Discard the stop replies we have already pulled with
6287 QUEUE_iterate (stop_reply_p
, stop_reply_queue
,
6288 remove_stop_reply_of_remote_state
, ¶m
);
6291 /* A parameter to pass data in and out. */
6294 remote_notif_remove_once_on_match (QUEUE (stop_reply_p
) *q
,
6295 QUEUE_ITER (stop_reply_p
) *iter
,
6299 struct queue_iter_param
*param
= (struct queue_iter_param
*) data
;
6300 ptid_t
*ptid
= (ptid_t
*) param
->input
;
6302 if (ptid_match (event
->ptid
, *ptid
))
6304 param
->output
= event
;
6305 QUEUE_remove_elem (stop_reply_p
, q
, iter
);
6312 /* Remove the first reply in 'stop_reply_queue' which matches
6315 static struct stop_reply
*
6316 remote_notif_remove_queued_reply (ptid_t ptid
)
6318 struct queue_iter_param param
;
6320 param
.input
= &ptid
;
6321 param
.output
= NULL
;
6323 QUEUE_iterate (stop_reply_p
, stop_reply_queue
,
6324 remote_notif_remove_once_on_match
, ¶m
);
6326 fprintf_unfiltered (gdb_stdlog
,
6327 "notif: discard queued event: 'Stop' in %s\n",
6328 target_pid_to_str (ptid
));
6330 return param
.output
;
6333 /* Look for a queued stop reply belonging to PTID. If one is found,
6334 remove it from the queue, and return it. Returns NULL if none is
6335 found. If there are still queued events left to process, tell the
6336 event loop to get back to target_wait soon. */
6338 static struct stop_reply
*
6339 queued_stop_reply (ptid_t ptid
)
6341 struct stop_reply
*r
= remote_notif_remove_queued_reply (ptid
);
6343 if (!QUEUE_is_empty (stop_reply_p
, stop_reply_queue
))
6344 /* There's still at least an event left. */
6345 mark_async_event_handler (remote_async_inferior_event_token
);
6350 /* Push a fully parsed stop reply in the stop reply queue. Since we
6351 know that we now have at least one queued event left to pass to the
6352 core side, tell the event loop to get back to target_wait soon. */
6355 push_stop_reply (struct stop_reply
*new_event
)
6357 QUEUE_enque (stop_reply_p
, stop_reply_queue
, new_event
);
6360 fprintf_unfiltered (gdb_stdlog
,
6361 "notif: push 'Stop' %s to queue %d\n",
6362 target_pid_to_str (new_event
->ptid
),
6363 QUEUE_length (stop_reply_p
,
6366 mark_async_event_handler (remote_async_inferior_event_token
);
6370 stop_reply_match_ptid_and_ws (QUEUE (stop_reply_p
) *q
,
6371 QUEUE_ITER (stop_reply_p
) *iter
,
6372 struct stop_reply
*event
,
6375 ptid_t
*ptid
= (ptid_t
*) data
;
6377 return !(ptid_equal (*ptid
, event
->ptid
)
6378 && event
->ws
.kind
== TARGET_WAITKIND_STOPPED
);
6381 /* Returns true if we have a stop reply for PTID. */
6384 peek_stop_reply (ptid_t ptid
)
6386 return !QUEUE_iterate (stop_reply_p
, stop_reply_queue
,
6387 stop_reply_match_ptid_and_ws
, &ptid
);
6390 /* Helper for remote_parse_stop_reply. Return nonzero if the substring
6391 starting with P and ending with PEND matches PREFIX. */
6394 strprefix (const char *p
, const char *pend
, const char *prefix
)
6396 for ( ; p
< pend
; p
++, prefix
++)
6399 return *prefix
== '\0';
6402 /* Parse the stop reply in BUF. Either the function succeeds, and the
6403 result is stored in EVENT, or throws an error. */
6406 remote_parse_stop_reply (char *buf
, struct stop_reply
*event
)
6408 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6413 event
->ptid
= null_ptid
;
6414 event
->rs
= get_remote_state ();
6415 event
->ws
.kind
= TARGET_WAITKIND_IGNORE
;
6416 event
->ws
.value
.integer
= 0;
6417 event
->stop_reason
= TARGET_STOPPED_BY_NO_REASON
;
6418 event
->regcache
= NULL
;
6423 case 'T': /* Status with PC, SP, FP, ... */
6424 /* Expedited reply, containing Signal, {regno, reg} repeat. */
6425 /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where
6427 n... = register number
6428 r... = register contents
6431 p
= &buf
[3]; /* after Txx */
6437 p1
= strchr (p
, ':');
6439 error (_("Malformed packet(a) (missing colon): %s\n\
6443 error (_("Malformed packet(a) (missing register number): %s\n\
6447 /* Some "registers" are actually extended stop information.
6448 Note if you're adding a new entry here: GDB 7.9 and
6449 earlier assume that all register "numbers" that start
6450 with an hex digit are real register numbers. Make sure
6451 the server only sends such a packet if it knows the
6452 client understands it. */
6454 if (strprefix (p
, p1
, "thread"))
6455 event
->ptid
= read_ptid (++p1
, &p
);
6456 else if (strprefix (p
, p1
, "syscall_entry"))
6460 event
->ws
.kind
= TARGET_WAITKIND_SYSCALL_ENTRY
;
6461 p
= unpack_varlen_hex (++p1
, &sysno
);
6462 event
->ws
.value
.syscall_number
= (int) sysno
;
6464 else if (strprefix (p
, p1
, "syscall_return"))
6468 event
->ws
.kind
= TARGET_WAITKIND_SYSCALL_RETURN
;
6469 p
= unpack_varlen_hex (++p1
, &sysno
);
6470 event
->ws
.value
.syscall_number
= (int) sysno
;
6472 else if (strprefix (p
, p1
, "watch")
6473 || strprefix (p
, p1
, "rwatch")
6474 || strprefix (p
, p1
, "awatch"))
6476 event
->stop_reason
= TARGET_STOPPED_BY_WATCHPOINT
;
6477 p
= unpack_varlen_hex (++p1
, &addr
);
6478 event
->watch_data_address
= (CORE_ADDR
) addr
;
6480 else if (strprefix (p
, p1
, "swbreak"))
6482 event
->stop_reason
= TARGET_STOPPED_BY_SW_BREAKPOINT
;
6484 /* Make sure the stub doesn't forget to indicate support
6486 if (packet_support (PACKET_swbreak_feature
) != PACKET_ENABLE
)
6487 error (_("Unexpected swbreak stop reason"));
6489 /* The value part is documented as "must be empty",
6490 though we ignore it, in case we ever decide to make
6491 use of it in a backward compatible way. */
6492 p
= strchrnul (p1
+ 1, ';');
6494 else if (strprefix (p
, p1
, "hwbreak"))
6496 event
->stop_reason
= TARGET_STOPPED_BY_HW_BREAKPOINT
;
6498 /* Make sure the stub doesn't forget to indicate support
6500 if (packet_support (PACKET_hwbreak_feature
) != PACKET_ENABLE
)
6501 error (_("Unexpected hwbreak stop reason"));
6504 p
= strchrnul (p1
+ 1, ';');
6506 else if (strprefix (p
, p1
, "library"))
6508 event
->ws
.kind
= TARGET_WAITKIND_LOADED
;
6509 p
= strchrnul (p1
+ 1, ';');
6511 else if (strprefix (p
, p1
, "replaylog"))
6513 event
->ws
.kind
= TARGET_WAITKIND_NO_HISTORY
;
6514 /* p1 will indicate "begin" or "end", but it makes
6515 no difference for now, so ignore it. */
6516 p
= strchrnul (p1
+ 1, ';');
6518 else if (strprefix (p
, p1
, "core"))
6522 p
= unpack_varlen_hex (++p1
, &c
);
6525 else if (strprefix (p
, p1
, "fork"))
6527 event
->ws
.value
.related_pid
= read_ptid (++p1
, &p
);
6528 event
->ws
.kind
= TARGET_WAITKIND_FORKED
;
6530 else if (strprefix (p
, p1
, "vfork"))
6532 event
->ws
.value
.related_pid
= read_ptid (++p1
, &p
);
6533 event
->ws
.kind
= TARGET_WAITKIND_VFORKED
;
6535 else if (strprefix (p
, p1
, "vforkdone"))
6537 event
->ws
.kind
= TARGET_WAITKIND_VFORK_DONE
;
6538 p
= strchrnul (p1
+ 1, ';');
6540 else if (strprefix (p
, p1
, "exec"))
6543 char pathname
[PATH_MAX
];
6546 /* Determine the length of the execd pathname. */
6547 p
= unpack_varlen_hex (++p1
, &ignored
);
6548 pathlen
= (p
- p1
) / 2;
6550 /* Save the pathname for event reporting and for
6551 the next run command. */
6552 hex2bin (p1
, (gdb_byte
*) pathname
, pathlen
);
6553 pathname
[pathlen
] = '\0';
6555 /* This is freed during event handling. */
6556 event
->ws
.value
.execd_pathname
= xstrdup (pathname
);
6557 event
->ws
.kind
= TARGET_WAITKIND_EXECD
;
6559 /* Skip the registers included in this packet, since
6560 they may be for an architecture different from the
6561 one used by the original program. */
6564 else if (strprefix (p
, p1
, "create"))
6566 event
->ws
.kind
= TARGET_WAITKIND_THREAD_CREATED
;
6567 p
= strchrnul (p1
+ 1, ';');
6576 p
= strchrnul (p1
+ 1, ';');
6581 /* Maybe a real ``P'' register number. */
6582 p_temp
= unpack_varlen_hex (p
, &pnum
);
6583 /* If the first invalid character is the colon, we got a
6584 register number. Otherwise, it's an unknown stop
6588 struct packet_reg
*reg
= packet_reg_from_pnum (rsa
, pnum
);
6589 cached_reg_t cached_reg
;
6592 error (_("Remote sent bad register number %s: %s\n\
6594 hex_string (pnum
), p
, buf
);
6596 cached_reg
.num
= reg
->regnum
;
6599 fieldsize
= hex2bin (p
, cached_reg
.data
,
6600 register_size (target_gdbarch (),
6603 if (fieldsize
< register_size (target_gdbarch (),
6605 warning (_("Remote reply is too short: %s"), buf
);
6607 VEC_safe_push (cached_reg_t
, event
->regcache
, &cached_reg
);
6611 /* Not a number. Silently skip unknown optional
6613 p
= strchrnul (p1
+ 1, ';');
6618 error (_("Remote register badly formatted: %s\nhere: %s"),
6623 if (event
->ws
.kind
!= TARGET_WAITKIND_IGNORE
)
6627 case 'S': /* Old style status, just signal only. */
6631 event
->ws
.kind
= TARGET_WAITKIND_STOPPED
;
6632 sig
= (fromhex (buf
[1]) << 4) + fromhex (buf
[2]);
6633 if (GDB_SIGNAL_FIRST
<= sig
&& sig
< GDB_SIGNAL_LAST
)
6634 event
->ws
.value
.sig
= (enum gdb_signal
) sig
;
6636 event
->ws
.value
.sig
= GDB_SIGNAL_UNKNOWN
;
6639 case 'w': /* Thread exited. */
6644 event
->ws
.kind
= TARGET_WAITKIND_THREAD_EXITED
;
6645 p
= unpack_varlen_hex (&buf
[1], &value
);
6646 event
->ws
.value
.integer
= value
;
6648 error (_("stop reply packet badly formatted: %s"), buf
);
6649 event
->ptid
= read_ptid (++p
, NULL
);
6652 case 'W': /* Target exited. */
6659 /* GDB used to accept only 2 hex chars here. Stubs should
6660 only send more if they detect GDB supports multi-process
6662 p
= unpack_varlen_hex (&buf
[1], &value
);
6666 /* The remote process exited. */
6667 event
->ws
.kind
= TARGET_WAITKIND_EXITED
;
6668 event
->ws
.value
.integer
= value
;
6672 /* The remote process exited with a signal. */
6673 event
->ws
.kind
= TARGET_WAITKIND_SIGNALLED
;
6674 if (GDB_SIGNAL_FIRST
<= value
&& value
< GDB_SIGNAL_LAST
)
6675 event
->ws
.value
.sig
= (enum gdb_signal
) value
;
6677 event
->ws
.value
.sig
= GDB_SIGNAL_UNKNOWN
;
6680 /* If no process is specified, assume inferior_ptid. */
6681 pid
= ptid_get_pid (inferior_ptid
);
6690 else if (startswith (p
, "process:"))
6694 p
+= sizeof ("process:") - 1;
6695 unpack_varlen_hex (p
, &upid
);
6699 error (_("unknown stop reply packet: %s"), buf
);
6702 error (_("unknown stop reply packet: %s"), buf
);
6703 event
->ptid
= pid_to_ptid (pid
);
6707 event
->ws
.kind
= TARGET_WAITKIND_NO_RESUMED
;
6708 event
->ptid
= minus_one_ptid
;
6712 if (target_is_non_stop_p () && ptid_equal (event
->ptid
, null_ptid
))
6713 error (_("No process or thread specified in stop reply: %s"), buf
);
6716 /* When the stub wants to tell GDB about a new notification reply, it
6717 sends a notification (%Stop, for example). Those can come it at
6718 any time, hence, we have to make sure that any pending
6719 putpkt/getpkt sequence we're making is finished, before querying
6720 the stub for more events with the corresponding ack command
6721 (vStopped, for example). E.g., if we started a vStopped sequence
6722 immediately upon receiving the notification, something like this
6730 1.6) <-- (registers reply to step #1.3)
6732 Obviously, the reply in step #1.6 would be unexpected to a vStopped
6735 To solve this, whenever we parse a %Stop notification successfully,
6736 we mark the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN, and carry on
6737 doing whatever we were doing:
6743 <GDB marks the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN>
6744 2.5) <-- (registers reply to step #2.3)
6746 Eventualy after step #2.5, we return to the event loop, which
6747 notices there's an event on the
6748 REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN event and calls the
6749 associated callback --- the function below. At this point, we're
6750 always safe to start a vStopped sequence. :
6753 2.7) <-- T05 thread:2
6759 remote_notif_get_pending_events (struct notif_client
*nc
)
6761 struct remote_state
*rs
= get_remote_state ();
6763 if (rs
->notif_state
->pending_event
[nc
->id
] != NULL
)
6766 fprintf_unfiltered (gdb_stdlog
,
6767 "notif: process: '%s' ack pending event\n",
6771 nc
->ack (nc
, rs
->buf
, rs
->notif_state
->pending_event
[nc
->id
]);
6772 rs
->notif_state
->pending_event
[nc
->id
] = NULL
;
6776 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6777 if (strcmp (rs
->buf
, "OK") == 0)
6780 remote_notif_ack (nc
, rs
->buf
);
6786 fprintf_unfiltered (gdb_stdlog
,
6787 "notif: process: '%s' no pending reply\n",
6792 /* Called when it is decided that STOP_REPLY holds the info of the
6793 event that is to be returned to the core. This function always
6794 destroys STOP_REPLY. */
6797 process_stop_reply (struct stop_reply
*stop_reply
,
6798 struct target_waitstatus
*status
)
6802 *status
= stop_reply
->ws
;
6803 ptid
= stop_reply
->ptid
;
6805 /* If no thread/process was reported by the stub, assume the current
6807 if (ptid_equal (ptid
, null_ptid
))
6808 ptid
= inferior_ptid
;
6810 if (status
->kind
!= TARGET_WAITKIND_EXITED
6811 && status
->kind
!= TARGET_WAITKIND_SIGNALLED
6812 && status
->kind
!= TARGET_WAITKIND_NO_RESUMED
)
6814 struct remote_state
*rs
= get_remote_state ();
6815 struct private_thread_info
*remote_thr
;
6817 /* Expedited registers. */
6818 if (stop_reply
->regcache
)
6820 struct regcache
*regcache
6821 = get_thread_arch_regcache (ptid
, target_gdbarch ());
6826 VEC_iterate(cached_reg_t
, stop_reply
->regcache
, ix
, reg
);
6828 regcache_raw_supply (regcache
, reg
->num
, reg
->data
);
6829 VEC_free (cached_reg_t
, stop_reply
->regcache
);
6832 remote_notice_new_inferior (ptid
, 0);
6833 remote_thr
= demand_private_info (ptid
);
6834 remote_thr
->core
= stop_reply
->core
;
6835 remote_thr
->stop_reason
= stop_reply
->stop_reason
;
6836 remote_thr
->watch_data_address
= stop_reply
->watch_data_address
;
6839 stop_reply_xfree (stop_reply
);
6843 /* The non-stop mode version of target_wait. */
6846 remote_wait_ns (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
6848 struct remote_state
*rs
= get_remote_state ();
6849 struct stop_reply
*stop_reply
;
6853 /* If in non-stop mode, get out of getpkt even if a
6854 notification is received. */
6856 ret
= getpkt_or_notif_sane (&rs
->buf
, &rs
->buf_size
,
6857 0 /* forever */, &is_notif
);
6860 if (ret
!= -1 && !is_notif
)
6863 case 'E': /* Error of some sort. */
6864 /* We're out of sync with the target now. Did it continue
6865 or not? We can't tell which thread it was in non-stop,
6866 so just ignore this. */
6867 warning (_("Remote failure reply: %s"), rs
->buf
);
6869 case 'O': /* Console output. */
6870 remote_console_output (rs
->buf
+ 1);
6873 warning (_("Invalid remote reply: %s"), rs
->buf
);
6877 /* Acknowledge a pending stop reply that may have arrived in the
6879 if (rs
->notif_state
->pending_event
[notif_client_stop
.id
] != NULL
)
6880 remote_notif_get_pending_events (¬if_client_stop
);
6882 /* If indeed we noticed a stop reply, we're done. */
6883 stop_reply
= queued_stop_reply (ptid
);
6884 if (stop_reply
!= NULL
)
6885 return process_stop_reply (stop_reply
, status
);
6887 /* Still no event. If we're just polling for an event, then
6888 return to the event loop. */
6889 if (options
& TARGET_WNOHANG
)
6891 status
->kind
= TARGET_WAITKIND_IGNORE
;
6892 return minus_one_ptid
;
6895 /* Otherwise do a blocking wait. */
6896 ret
= getpkt_or_notif_sane (&rs
->buf
, &rs
->buf_size
,
6897 1 /* forever */, &is_notif
);
6901 /* Wait until the remote machine stops, then return, storing status in
6902 STATUS just as `wait' would. */
6905 remote_wait_as (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
6907 struct remote_state
*rs
= get_remote_state ();
6908 ptid_t event_ptid
= null_ptid
;
6910 struct stop_reply
*stop_reply
;
6914 status
->kind
= TARGET_WAITKIND_IGNORE
;
6915 status
->value
.integer
= 0;
6917 stop_reply
= queued_stop_reply (ptid
);
6918 if (stop_reply
!= NULL
)
6919 return process_stop_reply (stop_reply
, status
);
6921 if (rs
->cached_wait_status
)
6922 /* Use the cached wait status, but only once. */
6923 rs
->cached_wait_status
= 0;
6928 int forever
= ((options
& TARGET_WNOHANG
) == 0
6929 && wait_forever_enabled_p
);
6931 if (!rs
->waiting_for_stop_reply
)
6933 status
->kind
= TARGET_WAITKIND_NO_RESUMED
;
6934 return minus_one_ptid
;
6937 if (!target_is_async_p ())
6939 ofunc
= signal (SIGINT
, sync_remote_interrupt
);
6940 /* If the user hit C-c before this packet, or between packets,
6941 pretend that it was hit right here. */
6942 if (check_quit_flag ())
6945 sync_remote_interrupt (SIGINT
);
6949 /* FIXME: cagney/1999-09-27: If we're in async mode we should
6950 _never_ wait for ever -> test on target_is_async_p().
6951 However, before we do that we need to ensure that the caller
6952 knows how to take the target into/out of async mode. */
6953 ret
= getpkt_or_notif_sane (&rs
->buf
, &rs
->buf_size
,
6954 forever
, &is_notif
);
6956 if (!target_is_async_p ())
6957 signal (SIGINT
, ofunc
);
6959 /* GDB gets a notification. Return to core as this event is
6961 if (ret
!= -1 && is_notif
)
6962 return minus_one_ptid
;
6964 if (ret
== -1 && (options
& TARGET_WNOHANG
) != 0)
6965 return minus_one_ptid
;
6970 /* Assume that the target has acknowledged Ctrl-C unless we receive
6971 an 'F' or 'O' packet. */
6972 if (buf
[0] != 'F' && buf
[0] != 'O')
6973 rs
->ctrlc_pending_p
= 0;
6977 case 'E': /* Error of some sort. */
6978 /* We're out of sync with the target now. Did it continue or
6979 not? Not is more likely, so report a stop. */
6980 rs
->waiting_for_stop_reply
= 0;
6982 warning (_("Remote failure reply: %s"), buf
);
6983 status
->kind
= TARGET_WAITKIND_STOPPED
;
6984 status
->value
.sig
= GDB_SIGNAL_0
;
6986 case 'F': /* File-I/O request. */
6987 remote_fileio_request (buf
, rs
->ctrlc_pending_p
);
6988 rs
->ctrlc_pending_p
= 0;
6990 case 'N': case 'T': case 'S': case 'X': case 'W':
6992 struct stop_reply
*stop_reply
;
6994 /* There is a stop reply to handle. */
6995 rs
->waiting_for_stop_reply
= 0;
6998 = (struct stop_reply
*) remote_notif_parse (¬if_client_stop
,
7001 event_ptid
= process_stop_reply (stop_reply
, status
);
7004 case 'O': /* Console output. */
7005 remote_console_output (buf
+ 1);
7008 if (rs
->last_sent_signal
!= GDB_SIGNAL_0
)
7010 /* Zero length reply means that we tried 'S' or 'C' and the
7011 remote system doesn't support it. */
7012 target_terminal_ours_for_output ();
7014 ("Can't send signals to this remote system. %s not sent.\n",
7015 gdb_signal_to_name (rs
->last_sent_signal
));
7016 rs
->last_sent_signal
= GDB_SIGNAL_0
;
7017 target_terminal_inferior ();
7019 strcpy ((char *) buf
, rs
->last_sent_step
? "s" : "c");
7020 putpkt ((char *) buf
);
7023 /* else fallthrough */
7025 warning (_("Invalid remote reply: %s"), buf
);
7029 if (status
->kind
== TARGET_WAITKIND_NO_RESUMED
)
7030 return minus_one_ptid
;
7031 else if (status
->kind
== TARGET_WAITKIND_IGNORE
)
7033 /* Nothing interesting happened. If we're doing a non-blocking
7034 poll, we're done. Otherwise, go back to waiting. */
7035 if (options
& TARGET_WNOHANG
)
7036 return minus_one_ptid
;
7040 else if (status
->kind
!= TARGET_WAITKIND_EXITED
7041 && status
->kind
!= TARGET_WAITKIND_SIGNALLED
)
7043 if (!ptid_equal (event_ptid
, null_ptid
))
7044 record_currthread (rs
, event_ptid
);
7046 event_ptid
= inferior_ptid
;
7049 /* A process exit. Invalidate our notion of current thread. */
7050 record_currthread (rs
, minus_one_ptid
);
7055 /* Wait until the remote machine stops, then return, storing status in
7056 STATUS just as `wait' would. */
7059 remote_wait (struct target_ops
*ops
,
7060 ptid_t ptid
, struct target_waitstatus
*status
, int options
)
7064 if (target_is_non_stop_p ())
7065 event_ptid
= remote_wait_ns (ptid
, status
, options
);
7067 event_ptid
= remote_wait_as (ptid
, status
, options
);
7069 if (target_is_async_p ())
7071 /* If there are are events left in the queue tell the event loop
7073 if (!QUEUE_is_empty (stop_reply_p
, stop_reply_queue
))
7074 mark_async_event_handler (remote_async_inferior_event_token
);
7080 /* Fetch a single register using a 'p' packet. */
7083 fetch_register_using_p (struct regcache
*regcache
, struct packet_reg
*reg
)
7085 struct remote_state
*rs
= get_remote_state ();
7087 char regp
[MAX_REGISTER_SIZE
];
7090 if (packet_support (PACKET_p
) == PACKET_DISABLE
)
7093 if (reg
->pnum
== -1)
7098 p
+= hexnumstr (p
, reg
->pnum
);
7101 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7105 switch (packet_ok (buf
, &remote_protocol_packets
[PACKET_p
]))
7109 case PACKET_UNKNOWN
:
7112 error (_("Could not fetch register \"%s\"; remote failure reply '%s'"),
7113 gdbarch_register_name (get_regcache_arch (regcache
),
7118 /* If this register is unfetchable, tell the regcache. */
7121 regcache_raw_supply (regcache
, reg
->regnum
, NULL
);
7125 /* Otherwise, parse and supply the value. */
7131 error (_("fetch_register_using_p: early buf termination"));
7133 regp
[i
++] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
7136 regcache_raw_supply (regcache
, reg
->regnum
, regp
);
7140 /* Fetch the registers included in the target's 'g' packet. */
7143 send_g_packet (void)
7145 struct remote_state
*rs
= get_remote_state ();
7148 xsnprintf (rs
->buf
, get_remote_packet_size (), "g");
7149 remote_send (&rs
->buf
, &rs
->buf_size
);
7151 /* We can get out of synch in various cases. If the first character
7152 in the buffer is not a hex character, assume that has happened
7153 and try to fetch another packet to read. */
7154 while ((rs
->buf
[0] < '0' || rs
->buf
[0] > '9')
7155 && (rs
->buf
[0] < 'A' || rs
->buf
[0] > 'F')
7156 && (rs
->buf
[0] < 'a' || rs
->buf
[0] > 'f')
7157 && rs
->buf
[0] != 'x') /* New: unavailable register value. */
7160 fprintf_unfiltered (gdb_stdlog
,
7161 "Bad register packet; fetching a new packet\n");
7162 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7165 buf_len
= strlen (rs
->buf
);
7167 /* Sanity check the received packet. */
7168 if (buf_len
% 2 != 0)
7169 error (_("Remote 'g' packet reply is of odd length: %s"), rs
->buf
);
7175 process_g_packet (struct regcache
*regcache
)
7177 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
7178 struct remote_state
*rs
= get_remote_state ();
7179 struct remote_arch_state
*rsa
= get_remote_arch_state ();
7184 buf_len
= strlen (rs
->buf
);
7186 /* Further sanity checks, with knowledge of the architecture. */
7187 if (buf_len
> 2 * rsa
->sizeof_g_packet
)
7188 error (_("Remote 'g' packet reply is too long: %s"), rs
->buf
);
7190 /* Save the size of the packet sent to us by the target. It is used
7191 as a heuristic when determining the max size of packets that the
7192 target can safely receive. */
7193 if (rsa
->actual_register_packet_size
== 0)
7194 rsa
->actual_register_packet_size
= buf_len
;
7196 /* If this is smaller than we guessed the 'g' packet would be,
7197 update our records. A 'g' reply that doesn't include a register's
7198 value implies either that the register is not available, or that
7199 the 'p' packet must be used. */
7200 if (buf_len
< 2 * rsa
->sizeof_g_packet
)
7202 rsa
->sizeof_g_packet
= buf_len
/ 2;
7204 for (i
= 0; i
< gdbarch_num_regs (gdbarch
); i
++)
7206 if (rsa
->regs
[i
].pnum
== -1)
7209 if (rsa
->regs
[i
].offset
>= rsa
->sizeof_g_packet
)
7210 rsa
->regs
[i
].in_g_packet
= 0;
7212 rsa
->regs
[i
].in_g_packet
= 1;
7216 regs
= (char *) alloca (rsa
->sizeof_g_packet
);
7218 /* Unimplemented registers read as all bits zero. */
7219 memset (regs
, 0, rsa
->sizeof_g_packet
);
7221 /* Reply describes registers byte by byte, each byte encoded as two
7222 hex characters. Suck them all up, then supply them to the
7223 register cacheing/storage mechanism. */
7226 for (i
= 0; i
< rsa
->sizeof_g_packet
; i
++)
7228 if (p
[0] == 0 || p
[1] == 0)
7229 /* This shouldn't happen - we adjusted sizeof_g_packet above. */
7230 internal_error (__FILE__
, __LINE__
,
7231 _("unexpected end of 'g' packet reply"));
7233 if (p
[0] == 'x' && p
[1] == 'x')
7234 regs
[i
] = 0; /* 'x' */
7236 regs
[i
] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
7240 for (i
= 0; i
< gdbarch_num_regs (gdbarch
); i
++)
7242 struct packet_reg
*r
= &rsa
->regs
[i
];
7246 if (r
->offset
* 2 >= strlen (rs
->buf
))
7247 /* This shouldn't happen - we adjusted in_g_packet above. */
7248 internal_error (__FILE__
, __LINE__
,
7249 _("unexpected end of 'g' packet reply"));
7250 else if (rs
->buf
[r
->offset
* 2] == 'x')
7252 gdb_assert (r
->offset
* 2 < strlen (rs
->buf
));
7253 /* The register isn't available, mark it as such (at
7254 the same time setting the value to zero). */
7255 regcache_raw_supply (regcache
, r
->regnum
, NULL
);
7258 regcache_raw_supply (regcache
, r
->regnum
,
7265 fetch_registers_using_g (struct regcache
*regcache
)
7268 process_g_packet (regcache
);
7271 /* Make the remote selected traceframe match GDB's selected
7275 set_remote_traceframe (void)
7278 struct remote_state
*rs
= get_remote_state ();
7280 if (rs
->remote_traceframe_number
== get_traceframe_number ())
7283 /* Avoid recursion, remote_trace_find calls us again. */
7284 rs
->remote_traceframe_number
= get_traceframe_number ();
7286 newnum
= target_trace_find (tfind_number
,
7287 get_traceframe_number (), 0, 0, NULL
);
7289 /* Should not happen. If it does, all bets are off. */
7290 if (newnum
!= get_traceframe_number ())
7291 warning (_("could not set remote traceframe"));
7295 remote_fetch_registers (struct target_ops
*ops
,
7296 struct regcache
*regcache
, int regnum
)
7298 struct remote_arch_state
*rsa
= get_remote_arch_state ();
7301 set_remote_traceframe ();
7302 set_general_thread (inferior_ptid
);
7306 struct packet_reg
*reg
= packet_reg_from_regnum (rsa
, regnum
);
7308 gdb_assert (reg
!= NULL
);
7310 /* If this register might be in the 'g' packet, try that first -
7311 we are likely to read more than one register. If this is the
7312 first 'g' packet, we might be overly optimistic about its
7313 contents, so fall back to 'p'. */
7314 if (reg
->in_g_packet
)
7316 fetch_registers_using_g (regcache
);
7317 if (reg
->in_g_packet
)
7321 if (fetch_register_using_p (regcache
, reg
))
7324 /* This register is not available. */
7325 regcache_raw_supply (regcache
, reg
->regnum
, NULL
);
7330 fetch_registers_using_g (regcache
);
7332 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
7333 if (!rsa
->regs
[i
].in_g_packet
)
7334 if (!fetch_register_using_p (regcache
, &rsa
->regs
[i
]))
7336 /* This register is not available. */
7337 regcache_raw_supply (regcache
, i
, NULL
);
7341 /* Prepare to store registers. Since we may send them all (using a
7342 'G' request), we have to read out the ones we don't want to change
7346 remote_prepare_to_store (struct target_ops
*self
, struct regcache
*regcache
)
7348 struct remote_arch_state
*rsa
= get_remote_arch_state ();
7350 gdb_byte buf
[MAX_REGISTER_SIZE
];
7352 /* Make sure the entire registers array is valid. */
7353 switch (packet_support (PACKET_P
))
7355 case PACKET_DISABLE
:
7356 case PACKET_SUPPORT_UNKNOWN
:
7357 /* Make sure all the necessary registers are cached. */
7358 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
7359 if (rsa
->regs
[i
].in_g_packet
)
7360 regcache_raw_read (regcache
, rsa
->regs
[i
].regnum
, buf
);
7367 /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF
7368 packet was not recognized. */
7371 store_register_using_P (const struct regcache
*regcache
,
7372 struct packet_reg
*reg
)
7374 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
7375 struct remote_state
*rs
= get_remote_state ();
7376 /* Try storing a single register. */
7377 char *buf
= rs
->buf
;
7378 gdb_byte regp
[MAX_REGISTER_SIZE
];
7381 if (packet_support (PACKET_P
) == PACKET_DISABLE
)
7384 if (reg
->pnum
== -1)
7387 xsnprintf (buf
, get_remote_packet_size (), "P%s=", phex_nz (reg
->pnum
, 0));
7388 p
= buf
+ strlen (buf
);
7389 regcache_raw_collect (regcache
, reg
->regnum
, regp
);
7390 bin2hex (regp
, p
, register_size (gdbarch
, reg
->regnum
));
7392 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7394 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_P
]))
7399 error (_("Could not write register \"%s\"; remote failure reply '%s'"),
7400 gdbarch_register_name (gdbarch
, reg
->regnum
), rs
->buf
);
7401 case PACKET_UNKNOWN
:
7404 internal_error (__FILE__
, __LINE__
, _("Bad result from packet_ok"));
7408 /* Store register REGNUM, or all registers if REGNUM == -1, from the
7409 contents of the register cache buffer. FIXME: ignores errors. */
7412 store_registers_using_G (const struct regcache
*regcache
)
7414 struct remote_state
*rs
= get_remote_state ();
7415 struct remote_arch_state
*rsa
= get_remote_arch_state ();
7419 /* Extract all the registers in the regcache copying them into a
7424 regs
= (gdb_byte
*) alloca (rsa
->sizeof_g_packet
);
7425 memset (regs
, 0, rsa
->sizeof_g_packet
);
7426 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
7428 struct packet_reg
*r
= &rsa
->regs
[i
];
7431 regcache_raw_collect (regcache
, r
->regnum
, regs
+ r
->offset
);
7435 /* Command describes registers byte by byte,
7436 each byte encoded as two hex characters. */
7439 /* remote_prepare_to_store insures that rsa->sizeof_g_packet gets
7441 bin2hex (regs
, p
, rsa
->sizeof_g_packet
);
7443 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7444 if (packet_check_result (rs
->buf
) == PACKET_ERROR
)
7445 error (_("Could not write registers; remote failure reply '%s'"),
7449 /* Store register REGNUM, or all registers if REGNUM == -1, from the contents
7450 of the register cache buffer. FIXME: ignores errors. */
7453 remote_store_registers (struct target_ops
*ops
,
7454 struct regcache
*regcache
, int regnum
)
7456 struct remote_arch_state
*rsa
= get_remote_arch_state ();
7459 set_remote_traceframe ();
7460 set_general_thread (inferior_ptid
);
7464 struct packet_reg
*reg
= packet_reg_from_regnum (rsa
, regnum
);
7466 gdb_assert (reg
!= NULL
);
7468 /* Always prefer to store registers using the 'P' packet if
7469 possible; we often change only a small number of registers.
7470 Sometimes we change a larger number; we'd need help from a
7471 higher layer to know to use 'G'. */
7472 if (store_register_using_P (regcache
, reg
))
7475 /* For now, don't complain if we have no way to write the
7476 register. GDB loses track of unavailable registers too
7477 easily. Some day, this may be an error. We don't have
7478 any way to read the register, either... */
7479 if (!reg
->in_g_packet
)
7482 store_registers_using_G (regcache
);
7486 store_registers_using_G (regcache
);
7488 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
7489 if (!rsa
->regs
[i
].in_g_packet
)
7490 if (!store_register_using_P (regcache
, &rsa
->regs
[i
]))
7491 /* See above for why we do not issue an error here. */
7496 /* Return the number of hex digits in num. */
7499 hexnumlen (ULONGEST num
)
7503 for (i
= 0; num
!= 0; i
++)
7509 /* Set BUF to the minimum number of hex digits representing NUM. */
7512 hexnumstr (char *buf
, ULONGEST num
)
7514 int len
= hexnumlen (num
);
7516 return hexnumnstr (buf
, num
, len
);
7520 /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */
7523 hexnumnstr (char *buf
, ULONGEST num
, int width
)
7529 for (i
= width
- 1; i
>= 0; i
--)
7531 buf
[i
] = "0123456789abcdef"[(num
& 0xf)];
7538 /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */
7541 remote_address_masked (CORE_ADDR addr
)
7543 unsigned int address_size
= remote_address_size
;
7545 /* If "remoteaddresssize" was not set, default to target address size. */
7547 address_size
= gdbarch_addr_bit (target_gdbarch ());
7549 if (address_size
> 0
7550 && address_size
< (sizeof (ULONGEST
) * 8))
7552 /* Only create a mask when that mask can safely be constructed
7553 in a ULONGEST variable. */
7556 mask
= (mask
<< address_size
) - 1;
7562 /* Determine whether the remote target supports binary downloading.
7563 This is accomplished by sending a no-op memory write of zero length
7564 to the target at the specified address. It does not suffice to send
7565 the whole packet, since many stubs strip the eighth bit and
7566 subsequently compute a wrong checksum, which causes real havoc with
7569 NOTE: This can still lose if the serial line is not eight-bit
7570 clean. In cases like this, the user should clear "remote
7574 check_binary_download (CORE_ADDR addr
)
7576 struct remote_state
*rs
= get_remote_state ();
7578 switch (packet_support (PACKET_X
))
7580 case PACKET_DISABLE
:
7584 case PACKET_SUPPORT_UNKNOWN
:
7590 p
+= hexnumstr (p
, (ULONGEST
) addr
);
7592 p
+= hexnumstr (p
, (ULONGEST
) 0);
7596 putpkt_binary (rs
->buf
, (int) (p
- rs
->buf
));
7597 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7599 if (rs
->buf
[0] == '\0')
7602 fprintf_unfiltered (gdb_stdlog
,
7603 "binary downloading NOT "
7604 "supported by target\n");
7605 remote_protocol_packets
[PACKET_X
].support
= PACKET_DISABLE
;
7610 fprintf_unfiltered (gdb_stdlog
,
7611 "binary downloading supported by target\n");
7612 remote_protocol_packets
[PACKET_X
].support
= PACKET_ENABLE
;
7619 /* Helper function to resize the payload in order to try to get a good
7620 alignment. We try to write an amount of data such that the next write will
7621 start on an address aligned on REMOTE_ALIGN_WRITES. */
7624 align_for_efficient_write (int todo
, CORE_ADDR memaddr
)
7626 return ((memaddr
+ todo
) & ~(REMOTE_ALIGN_WRITES
- 1)) - memaddr
;
7629 /* Write memory data directly to the remote machine.
7630 This does not inform the data cache; the data cache uses this.
7631 HEADER is the starting part of the packet.
7632 MEMADDR is the address in the remote memory space.
7633 MYADDR is the address of the buffer in our space.
7634 LEN_UNITS is the number of addressable units to write.
7635 UNIT_SIZE is the length in bytes of an addressable unit.
7636 PACKET_FORMAT should be either 'X' or 'M', and indicates if we
7637 should send data as binary ('X'), or hex-encoded ('M').
7639 The function creates packet of the form
7640 <HEADER><ADDRESS>,<LENGTH>:<DATA>
7642 where encoding of <DATA> is terminated by PACKET_FORMAT.
7644 If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma
7647 Return the transferred status, error or OK (an
7648 'enum target_xfer_status' value). Save the number of addressable units
7649 transferred in *XFERED_LEN_UNITS. Only transfer a single packet.
7651 On a platform with an addressable memory size of 2 bytes (UNIT_SIZE == 2), an
7652 exchange between gdb and the stub could look like (?? in place of the
7658 -> $M1000,3:eeeeffffeeee#??
7662 <- eeeeffffeeeedddd */
7664 static enum target_xfer_status
7665 remote_write_bytes_aux (const char *header
, CORE_ADDR memaddr
,
7666 const gdb_byte
*myaddr
, ULONGEST len_units
,
7667 int unit_size
, ULONGEST
*xfered_len_units
,
7668 char packet_format
, int use_length
)
7670 struct remote_state
*rs
= get_remote_state ();
7676 int payload_capacity_bytes
;
7677 int payload_length_bytes
;
7679 if (packet_format
!= 'X' && packet_format
!= 'M')
7680 internal_error (__FILE__
, __LINE__
,
7681 _("remote_write_bytes_aux: bad packet format"));
7684 return TARGET_XFER_EOF
;
7686 payload_capacity_bytes
= get_memory_write_packet_size ();
7688 /* The packet buffer will be large enough for the payload;
7689 get_memory_packet_size ensures this. */
7692 /* Compute the size of the actual payload by subtracting out the
7693 packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */
7695 payload_capacity_bytes
-= strlen ("$,:#NN");
7697 /* The comma won't be used. */
7698 payload_capacity_bytes
+= 1;
7699 payload_capacity_bytes
-= strlen (header
);
7700 payload_capacity_bytes
-= hexnumlen (memaddr
);
7702 /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */
7704 strcat (rs
->buf
, header
);
7705 p
= rs
->buf
+ strlen (header
);
7707 /* Compute a best guess of the number of bytes actually transfered. */
7708 if (packet_format
== 'X')
7710 /* Best guess at number of bytes that will fit. */
7711 todo_units
= min (len_units
, payload_capacity_bytes
/ unit_size
);
7713 payload_capacity_bytes
-= hexnumlen (todo_units
);
7714 todo_units
= min (todo_units
, payload_capacity_bytes
/ unit_size
);
7718 /* Number of bytes that will fit. */
7719 todo_units
= min (len_units
, (payload_capacity_bytes
/ unit_size
) / 2);
7721 payload_capacity_bytes
-= hexnumlen (todo_units
);
7722 todo_units
= min (todo_units
, (payload_capacity_bytes
/ unit_size
) / 2);
7725 if (todo_units
<= 0)
7726 internal_error (__FILE__
, __LINE__
,
7727 _("minimum packet size too small to write data"));
7729 /* If we already need another packet, then try to align the end
7730 of this packet to a useful boundary. */
7731 if (todo_units
> 2 * REMOTE_ALIGN_WRITES
&& todo_units
< len_units
)
7732 todo_units
= align_for_efficient_write (todo_units
, memaddr
);
7734 /* Append "<memaddr>". */
7735 memaddr
= remote_address_masked (memaddr
);
7736 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
7743 /* Append the length and retain its location and size. It may need to be
7744 adjusted once the packet body has been created. */
7746 plenlen
= hexnumstr (p
, (ULONGEST
) todo_units
);
7754 /* Append the packet body. */
7755 if (packet_format
== 'X')
7757 /* Binary mode. Send target system values byte by byte, in
7758 increasing byte addresses. Only escape certain critical
7760 payload_length_bytes
=
7761 remote_escape_output (myaddr
, todo_units
, unit_size
, (gdb_byte
*) p
,
7762 &units_written
, payload_capacity_bytes
);
7764 /* If not all TODO units fit, then we'll need another packet. Make
7765 a second try to keep the end of the packet aligned. Don't do
7766 this if the packet is tiny. */
7767 if (units_written
< todo_units
&& units_written
> 2 * REMOTE_ALIGN_WRITES
)
7771 new_todo_units
= align_for_efficient_write (units_written
, memaddr
);
7773 if (new_todo_units
!= units_written
)
7774 payload_length_bytes
=
7775 remote_escape_output (myaddr
, new_todo_units
, unit_size
,
7776 (gdb_byte
*) p
, &units_written
,
7777 payload_capacity_bytes
);
7780 p
+= payload_length_bytes
;
7781 if (use_length
&& units_written
< todo_units
)
7783 /* Escape chars have filled up the buffer prematurely,
7784 and we have actually sent fewer units than planned.
7785 Fix-up the length field of the packet. Use the same
7786 number of characters as before. */
7787 plen
+= hexnumnstr (plen
, (ULONGEST
) units_written
,
7789 *plen
= ':'; /* overwrite \0 from hexnumnstr() */
7794 /* Normal mode: Send target system values byte by byte, in
7795 increasing byte addresses. Each byte is encoded as a two hex
7797 p
+= 2 * bin2hex (myaddr
, p
, todo_units
* unit_size
);
7798 units_written
= todo_units
;
7801 putpkt_binary (rs
->buf
, (int) (p
- rs
->buf
));
7802 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7804 if (rs
->buf
[0] == 'E')
7805 return TARGET_XFER_E_IO
;
7807 /* Return UNITS_WRITTEN, not TODO_UNITS, in case escape chars caused us to
7808 send fewer units than we'd planned. */
7809 *xfered_len_units
= (ULONGEST
) units_written
;
7810 return TARGET_XFER_OK
;
7813 /* Write memory data directly to the remote machine.
7814 This does not inform the data cache; the data cache uses this.
7815 MEMADDR is the address in the remote memory space.
7816 MYADDR is the address of the buffer in our space.
7817 LEN is the number of bytes.
7819 Return the transferred status, error or OK (an
7820 'enum target_xfer_status' value). Save the number of bytes
7821 transferred in *XFERED_LEN. Only transfer a single packet. */
7823 static enum target_xfer_status
7824 remote_write_bytes (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ULONGEST len
,
7825 int unit_size
, ULONGEST
*xfered_len
)
7827 char *packet_format
= 0;
7829 /* Check whether the target supports binary download. */
7830 check_binary_download (memaddr
);
7832 switch (packet_support (PACKET_X
))
7835 packet_format
= "X";
7837 case PACKET_DISABLE
:
7838 packet_format
= "M";
7840 case PACKET_SUPPORT_UNKNOWN
:
7841 internal_error (__FILE__
, __LINE__
,
7842 _("remote_write_bytes: bad internal state"));
7844 internal_error (__FILE__
, __LINE__
, _("bad switch"));
7847 return remote_write_bytes_aux (packet_format
,
7848 memaddr
, myaddr
, len
, unit_size
, xfered_len
,
7849 packet_format
[0], 1);
7852 /* Read memory data directly from the remote machine.
7853 This does not use the data cache; the data cache uses this.
7854 MEMADDR is the address in the remote memory space.
7855 MYADDR is the address of the buffer in our space.
7856 LEN_UNITS is the number of addressable memory units to read..
7857 UNIT_SIZE is the length in bytes of an addressable unit.
7859 Return the transferred status, error or OK (an
7860 'enum target_xfer_status' value). Save the number of bytes
7861 transferred in *XFERED_LEN_UNITS.
7863 See the comment of remote_write_bytes_aux for an example of
7864 memory read/write exchange between gdb and the stub. */
7866 static enum target_xfer_status
7867 remote_read_bytes_1 (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ULONGEST len_units
,
7868 int unit_size
, ULONGEST
*xfered_len_units
)
7870 struct remote_state
*rs
= get_remote_state ();
7871 int buf_size_bytes
; /* Max size of packet output buffer. */
7876 buf_size_bytes
= get_memory_read_packet_size ();
7877 /* The packet buffer will be large enough for the payload;
7878 get_memory_packet_size ensures this. */
7880 /* Number of units that will fit. */
7881 todo_units
= min (len_units
, (buf_size_bytes
/ unit_size
) / 2);
7883 /* Construct "m"<memaddr>","<len>". */
7884 memaddr
= remote_address_masked (memaddr
);
7887 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
7889 p
+= hexnumstr (p
, (ULONGEST
) todo_units
);
7892 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7893 if (rs
->buf
[0] == 'E'
7894 && isxdigit (rs
->buf
[1]) && isxdigit (rs
->buf
[2])
7895 && rs
->buf
[3] == '\0')
7896 return TARGET_XFER_E_IO
;
7897 /* Reply describes memory byte by byte, each byte encoded as two hex
7900 decoded_bytes
= hex2bin (p
, myaddr
, todo_units
* unit_size
);
7901 /* Return what we have. Let higher layers handle partial reads. */
7902 *xfered_len_units
= (ULONGEST
) (decoded_bytes
/ unit_size
);
7903 return TARGET_XFER_OK
;
7906 /* Using the set of read-only target sections of remote, read live
7909 For interface/parameters/return description see target.h,
7912 static enum target_xfer_status
7913 remote_xfer_live_readonly_partial (struct target_ops
*ops
, gdb_byte
*readbuf
,
7914 ULONGEST memaddr
, ULONGEST len
,
7915 int unit_size
, ULONGEST
*xfered_len
)
7917 struct target_section
*secp
;
7918 struct target_section_table
*table
;
7920 secp
= target_section_by_addr (ops
, memaddr
);
7922 && (bfd_get_section_flags (secp
->the_bfd_section
->owner
,
7923 secp
->the_bfd_section
)
7926 struct target_section
*p
;
7927 ULONGEST memend
= memaddr
+ len
;
7929 table
= target_get_section_table (ops
);
7931 for (p
= table
->sections
; p
< table
->sections_end
; p
++)
7933 if (memaddr
>= p
->addr
)
7935 if (memend
<= p
->endaddr
)
7937 /* Entire transfer is within this section. */
7938 return remote_read_bytes_1 (memaddr
, readbuf
, len
, unit_size
,
7941 else if (memaddr
>= p
->endaddr
)
7943 /* This section ends before the transfer starts. */
7948 /* This section overlaps the transfer. Just do half. */
7949 len
= p
->endaddr
- memaddr
;
7950 return remote_read_bytes_1 (memaddr
, readbuf
, len
, unit_size
,
7957 return TARGET_XFER_EOF
;
7960 /* Similar to remote_read_bytes_1, but it reads from the remote stub
7961 first if the requested memory is unavailable in traceframe.
7962 Otherwise, fall back to remote_read_bytes_1. */
7964 static enum target_xfer_status
7965 remote_read_bytes (struct target_ops
*ops
, CORE_ADDR memaddr
,
7966 gdb_byte
*myaddr
, ULONGEST len
, int unit_size
,
7967 ULONGEST
*xfered_len
)
7970 return TARGET_XFER_EOF
;
7972 if (get_traceframe_number () != -1)
7974 VEC(mem_range_s
) *available
;
7976 /* If we fail to get the set of available memory, then the
7977 target does not support querying traceframe info, and so we
7978 attempt reading from the traceframe anyway (assuming the
7979 target implements the old QTro packet then). */
7980 if (traceframe_available_memory (&available
, memaddr
, len
))
7982 struct cleanup
*old_chain
;
7984 old_chain
= make_cleanup (VEC_cleanup(mem_range_s
), &available
);
7986 if (VEC_empty (mem_range_s
, available
)
7987 || VEC_index (mem_range_s
, available
, 0)->start
!= memaddr
)
7989 enum target_xfer_status res
;
7991 /* Don't read into the traceframe's available
7993 if (!VEC_empty (mem_range_s
, available
))
7995 LONGEST oldlen
= len
;
7997 len
= VEC_index (mem_range_s
, available
, 0)->start
- memaddr
;
7998 gdb_assert (len
<= oldlen
);
8001 do_cleanups (old_chain
);
8003 /* This goes through the topmost target again. */
8004 res
= remote_xfer_live_readonly_partial (ops
, myaddr
, memaddr
,
8005 len
, unit_size
, xfered_len
);
8006 if (res
== TARGET_XFER_OK
)
8007 return TARGET_XFER_OK
;
8010 /* No use trying further, we know some memory starting
8011 at MEMADDR isn't available. */
8013 return TARGET_XFER_UNAVAILABLE
;
8017 /* Don't try to read more than how much is available, in
8018 case the target implements the deprecated QTro packet to
8019 cater for older GDBs (the target's knowledge of read-only
8020 sections may be outdated by now). */
8021 len
= VEC_index (mem_range_s
, available
, 0)->length
;
8023 do_cleanups (old_chain
);
8027 return remote_read_bytes_1 (memaddr
, myaddr
, len
, unit_size
, xfered_len
);
8032 /* Sends a packet with content determined by the printf format string
8033 FORMAT and the remaining arguments, then gets the reply. Returns
8034 whether the packet was a success, a failure, or unknown. */
8036 static enum packet_result
remote_send_printf (const char *format
, ...)
8037 ATTRIBUTE_PRINTF (1, 2);
8039 static enum packet_result
8040 remote_send_printf (const char *format
, ...)
8042 struct remote_state
*rs
= get_remote_state ();
8043 int max_size
= get_remote_packet_size ();
8046 va_start (ap
, format
);
8049 if (vsnprintf (rs
->buf
, max_size
, format
, ap
) >= max_size
)
8050 internal_error (__FILE__
, __LINE__
, _("Too long remote packet."));
8052 if (putpkt (rs
->buf
) < 0)
8053 error (_("Communication problem with target."));
8056 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8058 return packet_check_result (rs
->buf
);
8062 restore_remote_timeout (void *p
)
8064 int value
= *(int *)p
;
8066 remote_timeout
= value
;
8069 /* Flash writing can take quite some time. We'll set
8070 effectively infinite timeout for flash operations.
8071 In future, we'll need to decide on a better approach. */
8072 static const int remote_flash_timeout
= 1000;
8075 remote_flash_erase (struct target_ops
*ops
,
8076 ULONGEST address
, LONGEST length
)
8078 int addr_size
= gdbarch_addr_bit (target_gdbarch ()) / 8;
8079 int saved_remote_timeout
= remote_timeout
;
8080 enum packet_result ret
;
8081 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
8082 &saved_remote_timeout
);
8084 remote_timeout
= remote_flash_timeout
;
8086 ret
= remote_send_printf ("vFlashErase:%s,%s",
8087 phex (address
, addr_size
),
8091 case PACKET_UNKNOWN
:
8092 error (_("Remote target does not support flash erase"));
8094 error (_("Error erasing flash with vFlashErase packet"));
8099 do_cleanups (back_to
);
8102 static enum target_xfer_status
8103 remote_flash_write (struct target_ops
*ops
, ULONGEST address
,
8104 ULONGEST length
, ULONGEST
*xfered_len
,
8105 const gdb_byte
*data
)
8107 int saved_remote_timeout
= remote_timeout
;
8108 enum target_xfer_status ret
;
8109 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
8110 &saved_remote_timeout
);
8112 remote_timeout
= remote_flash_timeout
;
8113 ret
= remote_write_bytes_aux ("vFlashWrite:", address
, data
, length
, 1,
8115 do_cleanups (back_to
);
8121 remote_flash_done (struct target_ops
*ops
)
8123 int saved_remote_timeout
= remote_timeout
;
8125 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
8126 &saved_remote_timeout
);
8128 remote_timeout
= remote_flash_timeout
;
8129 ret
= remote_send_printf ("vFlashDone");
8130 do_cleanups (back_to
);
8134 case PACKET_UNKNOWN
:
8135 error (_("Remote target does not support vFlashDone"));
8137 error (_("Error finishing flash operation"));
8144 remote_files_info (struct target_ops
*ignore
)
8146 puts_filtered ("Debugging a target over a serial line.\n");
8149 /* Stuff for dealing with the packets which are part of this protocol.
8150 See comment at top of file for details. */
8152 /* Close/unpush the remote target, and throw a TARGET_CLOSE_ERROR
8153 error to higher layers. Called when a serial error is detected.
8154 The exception message is STRING, followed by a colon and a blank,
8155 the system error message for errno at function entry and final dot
8156 for output compatibility with throw_perror_with_name. */
8159 unpush_and_perror (const char *string
)
8161 int saved_errno
= errno
;
8163 remote_unpush_target ();
8164 throw_error (TARGET_CLOSE_ERROR
, "%s: %s.", string
,
8165 safe_strerror (saved_errno
));
8168 /* Read a single character from the remote end. */
8171 readchar (int timeout
)
8174 struct remote_state
*rs
= get_remote_state ();
8176 ch
= serial_readchar (rs
->remote_desc
, timeout
);
8181 switch ((enum serial_rc
) ch
)
8184 remote_unpush_target ();
8185 throw_error (TARGET_CLOSE_ERROR
, _("Remote connection closed"));
8188 unpush_and_perror (_("Remote communication error. "
8189 "Target disconnected."));
8191 case SERIAL_TIMEOUT
:
8197 /* Wrapper for serial_write that closes the target and throws if
8201 remote_serial_write (const char *str
, int len
)
8203 struct remote_state
*rs
= get_remote_state ();
8205 if (serial_write (rs
->remote_desc
, str
, len
))
8207 unpush_and_perror (_("Remote communication error. "
8208 "Target disconnected."));
8212 /* Send the command in *BUF to the remote machine, and read the reply
8213 into *BUF. Report an error if we get an error reply. Resize
8214 *BUF using xrealloc if necessary to hold the result, and update
8218 remote_send (char **buf
,
8222 getpkt (buf
, sizeof_buf
, 0);
8224 if ((*buf
)[0] == 'E')
8225 error (_("Remote failure reply: %s"), *buf
);
8228 /* Return a pointer to an xmalloc'ed string representing an escaped
8229 version of BUF, of len N. E.g. \n is converted to \\n, \t to \\t,
8230 etc. The caller is responsible for releasing the returned
8234 escape_buffer (const char *buf
, int n
)
8236 struct cleanup
*old_chain
;
8237 struct ui_file
*stb
;
8240 stb
= mem_fileopen ();
8241 old_chain
= make_cleanup_ui_file_delete (stb
);
8243 fputstrn_unfiltered (buf
, n
, '\\', stb
);
8244 str
= ui_file_xstrdup (stb
, NULL
);
8245 do_cleanups (old_chain
);
8249 /* Display a null-terminated packet on stdout, for debugging, using C
8253 print_packet (const char *buf
)
8255 puts_filtered ("\"");
8256 fputstr_filtered (buf
, '"', gdb_stdout
);
8257 puts_filtered ("\"");
8261 putpkt (const char *buf
)
8263 return putpkt_binary (buf
, strlen (buf
));
8266 /* Send a packet to the remote machine, with error checking. The data
8267 of the packet is in BUF. The string in BUF can be at most
8268 get_remote_packet_size () - 5 to account for the $, # and checksum,
8269 and for a possible /0 if we are debugging (remote_debug) and want
8270 to print the sent packet as a string. */
8273 putpkt_binary (const char *buf
, int cnt
)
8275 struct remote_state
*rs
= get_remote_state ();
8277 unsigned char csum
= 0;
8278 char *buf2
= (char *) xmalloc (cnt
+ 6);
8279 struct cleanup
*old_chain
= make_cleanup (xfree
, buf2
);
8286 /* Catch cases like trying to read memory or listing threads while
8287 we're waiting for a stop reply. The remote server wouldn't be
8288 ready to handle this request, so we'd hang and timeout. We don't
8289 have to worry about this in synchronous mode, because in that
8290 case it's not possible to issue a command while the target is
8291 running. This is not a problem in non-stop mode, because in that
8292 case, the stub is always ready to process serial input. */
8293 if (!target_is_non_stop_p ()
8294 && target_is_async_p ()
8295 && rs
->waiting_for_stop_reply
)
8297 error (_("Cannot execute this command while the target is running.\n"
8298 "Use the \"interrupt\" command to stop the target\n"
8299 "and then try again."));
8302 /* We're sending out a new packet. Make sure we don't look at a
8303 stale cached response. */
8304 rs
->cached_wait_status
= 0;
8306 /* Copy the packet into buffer BUF2, encapsulating it
8307 and giving it a checksum. */
8312 for (i
= 0; i
< cnt
; i
++)
8318 *p
++ = tohex ((csum
>> 4) & 0xf);
8319 *p
++ = tohex (csum
& 0xf);
8321 /* Send it over and over until we get a positive ack. */
8325 int started_error_output
= 0;
8329 struct cleanup
*old_chain
;
8333 str
= escape_buffer (buf2
, p
- buf2
);
8334 old_chain
= make_cleanup (xfree
, str
);
8335 fprintf_unfiltered (gdb_stdlog
, "Sending packet: %s...", str
);
8336 gdb_flush (gdb_stdlog
);
8337 do_cleanups (old_chain
);
8339 remote_serial_write (buf2
, p
- buf2
);
8341 /* If this is a no acks version of the remote protocol, send the
8342 packet and move on. */
8346 /* Read until either a timeout occurs (-2) or '+' is read.
8347 Handle any notification that arrives in the mean time. */
8350 ch
= readchar (remote_timeout
);
8358 case SERIAL_TIMEOUT
:
8361 if (started_error_output
)
8363 putchar_unfiltered ('\n');
8364 started_error_output
= 0;
8373 fprintf_unfiltered (gdb_stdlog
, "Ack\n");
8374 do_cleanups (old_chain
);
8378 fprintf_unfiltered (gdb_stdlog
, "Nak\n");
8380 case SERIAL_TIMEOUT
:
8384 do_cleanups (old_chain
);
8387 break; /* Retransmit buffer. */
8391 fprintf_unfiltered (gdb_stdlog
,
8392 "Packet instead of Ack, ignoring it\n");
8393 /* It's probably an old response sent because an ACK
8394 was lost. Gobble up the packet and ack it so it
8395 doesn't get retransmitted when we resend this
8398 remote_serial_write ("+", 1);
8399 continue; /* Now, go look for +. */
8406 /* If we got a notification, handle it, and go back to looking
8408 /* We've found the start of a notification. Now
8409 collect the data. */
8410 val
= read_frame (&rs
->buf
, &rs
->buf_size
);
8415 struct cleanup
*old_chain
;
8418 str
= escape_buffer (rs
->buf
, val
);
8419 old_chain
= make_cleanup (xfree
, str
);
8420 fprintf_unfiltered (gdb_stdlog
,
8421 " Notification received: %s\n",
8423 do_cleanups (old_chain
);
8425 handle_notification (rs
->notif_state
, rs
->buf
);
8426 /* We're in sync now, rewait for the ack. */
8433 if (!started_error_output
)
8435 started_error_output
= 1;
8436 fprintf_unfiltered (gdb_stdlog
, "putpkt: Junk: ");
8438 fputc_unfiltered (ch
& 0177, gdb_stdlog
);
8439 fprintf_unfiltered (gdb_stdlog
, "%s", rs
->buf
);
8448 if (!started_error_output
)
8450 started_error_output
= 1;
8451 fprintf_unfiltered (gdb_stdlog
, "putpkt: Junk: ");
8453 fputc_unfiltered (ch
& 0177, gdb_stdlog
);
8457 break; /* Here to retransmit. */
8461 /* This is wrong. If doing a long backtrace, the user should be
8462 able to get out next time we call QUIT, without anything as
8463 violent as interrupt_query. If we want to provide a way out of
8464 here without getting to the next QUIT, it should be based on
8465 hitting ^C twice as in remote_wait. */
8474 do_cleanups (old_chain
);
8478 /* Come here after finding the start of a frame when we expected an
8479 ack. Do our best to discard the rest of this packet. */
8488 c
= readchar (remote_timeout
);
8491 case SERIAL_TIMEOUT
:
8492 /* Nothing we can do. */
8495 /* Discard the two bytes of checksum and stop. */
8496 c
= readchar (remote_timeout
);
8498 c
= readchar (remote_timeout
);
8501 case '*': /* Run length encoding. */
8502 /* Discard the repeat count. */
8503 c
= readchar (remote_timeout
);
8508 /* A regular character. */
8514 /* Come here after finding the start of the frame. Collect the rest
8515 into *BUF, verifying the checksum, length, and handling run-length
8516 compression. NUL terminate the buffer. If there is not enough room,
8517 expand *BUF using xrealloc.
8519 Returns -1 on error, number of characters in buffer (ignoring the
8520 trailing NULL) on success. (could be extended to return one of the
8521 SERIAL status indications). */
8524 read_frame (char **buf_p
,
8531 struct remote_state
*rs
= get_remote_state ();
8538 c
= readchar (remote_timeout
);
8541 case SERIAL_TIMEOUT
:
8543 fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog
);
8547 fputs_filtered ("Saw new packet start in middle of old one\n",
8549 return -1; /* Start a new packet, count retries. */
8552 unsigned char pktcsum
;
8558 check_0
= readchar (remote_timeout
);
8560 check_1
= readchar (remote_timeout
);
8562 if (check_0
== SERIAL_TIMEOUT
|| check_1
== SERIAL_TIMEOUT
)
8565 fputs_filtered ("Timeout in checksum, retrying\n",
8569 else if (check_0
< 0 || check_1
< 0)
8572 fputs_filtered ("Communication error in checksum\n",
8577 /* Don't recompute the checksum; with no ack packets we
8578 don't have any way to indicate a packet retransmission
8583 pktcsum
= (fromhex (check_0
) << 4) | fromhex (check_1
);
8584 if (csum
== pktcsum
)
8589 struct cleanup
*old_chain
;
8592 str
= escape_buffer (buf
, bc
);
8593 old_chain
= make_cleanup (xfree
, str
);
8594 fprintf_unfiltered (gdb_stdlog
,
8595 "Bad checksum, sentsum=0x%x, "
8596 "csum=0x%x, buf=%s\n",
8597 pktcsum
, csum
, str
);
8598 do_cleanups (old_chain
);
8600 /* Number of characters in buffer ignoring trailing
8604 case '*': /* Run length encoding. */
8609 c
= readchar (remote_timeout
);
8611 repeat
= c
- ' ' + 3; /* Compute repeat count. */
8613 /* The character before ``*'' is repeated. */
8615 if (repeat
> 0 && repeat
<= 255 && bc
> 0)
8617 if (bc
+ repeat
- 1 >= *sizeof_buf
- 1)
8619 /* Make some more room in the buffer. */
8620 *sizeof_buf
+= repeat
;
8621 *buf_p
= (char *) xrealloc (*buf_p
, *sizeof_buf
);
8625 memset (&buf
[bc
], buf
[bc
- 1], repeat
);
8631 printf_filtered (_("Invalid run length encoding: %s\n"), buf
);
8635 if (bc
>= *sizeof_buf
- 1)
8637 /* Make some more room in the buffer. */
8639 *buf_p
= (char *) xrealloc (*buf_p
, *sizeof_buf
);
8650 /* Read a packet from the remote machine, with error checking, and
8651 store it in *BUF. Resize *BUF using xrealloc if necessary to hold
8652 the result, and update *SIZEOF_BUF. If FOREVER, wait forever
8653 rather than timing out; this is used (in synchronous mode) to wait
8654 for a target that is is executing user code to stop. */
8655 /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we
8656 don't have to change all the calls to getpkt to deal with the
8657 return value, because at the moment I don't know what the right
8658 thing to do it for those. */
8666 timed_out
= getpkt_sane (buf
, sizeof_buf
, forever
);
8670 /* Read a packet from the remote machine, with error checking, and
8671 store it in *BUF. Resize *BUF using xrealloc if necessary to hold
8672 the result, and update *SIZEOF_BUF. If FOREVER, wait forever
8673 rather than timing out; this is used (in synchronous mode) to wait
8674 for a target that is is executing user code to stop. If FOREVER ==
8675 0, this function is allowed to time out gracefully and return an
8676 indication of this to the caller. Otherwise return the number of
8677 bytes read. If EXPECTING_NOTIF, consider receiving a notification
8678 enough reason to return to the caller. *IS_NOTIF is an output
8679 boolean that indicates whether *BUF holds a notification or not
8680 (a regular packet). */
8683 getpkt_or_notif_sane_1 (char **buf
, long *sizeof_buf
, int forever
,
8684 int expecting_notif
, int *is_notif
)
8686 struct remote_state
*rs
= get_remote_state ();
8692 /* We're reading a new response. Make sure we don't look at a
8693 previously cached response. */
8694 rs
->cached_wait_status
= 0;
8696 strcpy (*buf
, "timeout");
8699 timeout
= watchdog
> 0 ? watchdog
: -1;
8700 else if (expecting_notif
)
8701 timeout
= 0; /* There should already be a char in the buffer. If
8704 timeout
= remote_timeout
;
8708 /* Process any number of notifications, and then return when
8712 /* If we get a timeout or bad checksum, retry up to MAX_TRIES
8714 for (tries
= 1; tries
<= MAX_TRIES
; tries
++)
8716 /* This can loop forever if the remote side sends us
8717 characters continuously, but if it pauses, we'll get
8718 SERIAL_TIMEOUT from readchar because of timeout. Then
8719 we'll count that as a retry.
8721 Note that even when forever is set, we will only wait
8722 forever prior to the start of a packet. After that, we
8723 expect characters to arrive at a brisk pace. They should
8724 show up within remote_timeout intervals. */
8726 c
= readchar (timeout
);
8727 while (c
!= SERIAL_TIMEOUT
&& c
!= '$' && c
!= '%');
8729 if (c
== SERIAL_TIMEOUT
)
8731 if (expecting_notif
)
8732 return -1; /* Don't complain, it's normal to not get
8733 anything in this case. */
8735 if (forever
) /* Watchdog went off? Kill the target. */
8738 remote_unpush_target ();
8739 throw_error (TARGET_CLOSE_ERROR
,
8740 _("Watchdog timeout has expired. "
8741 "Target detached."));
8744 fputs_filtered ("Timed out.\n", gdb_stdlog
);
8748 /* We've found the start of a packet or notification.
8749 Now collect the data. */
8750 val
= read_frame (buf
, sizeof_buf
);
8755 remote_serial_write ("-", 1);
8758 if (tries
> MAX_TRIES
)
8760 /* We have tried hard enough, and just can't receive the
8761 packet/notification. Give up. */
8762 printf_unfiltered (_("Ignoring packet error, continuing...\n"));
8764 /* Skip the ack char if we're in no-ack mode. */
8765 if (!rs
->noack_mode
)
8766 remote_serial_write ("+", 1);
8770 /* If we got an ordinary packet, return that to our caller. */
8775 struct cleanup
*old_chain
;
8778 str
= escape_buffer (*buf
, val
);
8779 old_chain
= make_cleanup (xfree
, str
);
8780 fprintf_unfiltered (gdb_stdlog
, "Packet received: %s\n", str
);
8781 do_cleanups (old_chain
);
8784 /* Skip the ack char if we're in no-ack mode. */
8785 if (!rs
->noack_mode
)
8786 remote_serial_write ("+", 1);
8787 if (is_notif
!= NULL
)
8792 /* If we got a notification, handle it, and go back to looking
8796 gdb_assert (c
== '%');
8800 struct cleanup
*old_chain
;
8803 str
= escape_buffer (*buf
, val
);
8804 old_chain
= make_cleanup (xfree
, str
);
8805 fprintf_unfiltered (gdb_stdlog
,
8806 " Notification received: %s\n",
8808 do_cleanups (old_chain
);
8810 if (is_notif
!= NULL
)
8813 handle_notification (rs
->notif_state
, *buf
);
8815 /* Notifications require no acknowledgement. */
8817 if (expecting_notif
)
8824 getpkt_sane (char **buf
, long *sizeof_buf
, int forever
)
8826 return getpkt_or_notif_sane_1 (buf
, sizeof_buf
, forever
, 0, NULL
);
8830 getpkt_or_notif_sane (char **buf
, long *sizeof_buf
, int forever
,
8833 return getpkt_or_notif_sane_1 (buf
, sizeof_buf
, forever
, 1,
8837 /* Check whether EVENT is a fork event for the process specified
8838 by the pid passed in DATA, and if it is, kill the fork child. */
8841 kill_child_of_pending_fork (QUEUE (stop_reply_p
) *q
,
8842 QUEUE_ITER (stop_reply_p
) *iter
,
8846 struct queue_iter_param
*param
= (struct queue_iter_param
*) data
;
8847 int parent_pid
= *(int *) param
->input
;
8849 if (is_pending_fork_parent (&event
->ws
, parent_pid
, event
->ptid
))
8851 struct remote_state
*rs
= get_remote_state ();
8852 int child_pid
= ptid_get_pid (event
->ws
.value
.related_pid
);
8855 res
= remote_vkill (child_pid
, rs
);
8857 error (_("Can't kill fork child process %d"), child_pid
);
8863 /* Kill any new fork children of process PID that haven't been
8864 processed by follow_fork. */
8867 kill_new_fork_children (int pid
, struct remote_state
*rs
)
8869 struct thread_info
*thread
;
8870 struct notif_client
*notif
= ¬if_client_stop
;
8871 struct queue_iter_param param
;
8873 /* Kill the fork child threads of any threads in process PID
8874 that are stopped at a fork event. */
8875 ALL_NON_EXITED_THREADS (thread
)
8877 struct target_waitstatus
*ws
= &thread
->pending_follow
;
8879 if (is_pending_fork_parent (ws
, pid
, thread
->ptid
))
8881 struct remote_state
*rs
= get_remote_state ();
8882 int child_pid
= ptid_get_pid (ws
->value
.related_pid
);
8885 res
= remote_vkill (child_pid
, rs
);
8887 error (_("Can't kill fork child process %d"), child_pid
);
8891 /* Check for any pending fork events (not reported or processed yet)
8892 in process PID and kill those fork child threads as well. */
8893 remote_notif_get_pending_events (notif
);
8895 param
.output
= NULL
;
8896 QUEUE_iterate (stop_reply_p
, stop_reply_queue
,
8897 kill_child_of_pending_fork
, ¶m
);
8901 /* Target hook to kill the current inferior. */
8904 remote_kill (struct target_ops
*ops
)
8907 int pid
= ptid_get_pid (inferior_ptid
);
8908 struct remote_state
*rs
= get_remote_state ();
8910 if (packet_support (PACKET_vKill
) != PACKET_DISABLE
)
8912 /* If we're stopped while forking and we haven't followed yet,
8913 kill the child task. We need to do this before killing the
8914 parent task because if this is a vfork then the parent will
8916 kill_new_fork_children (pid
, rs
);
8918 res
= remote_vkill (pid
, rs
);
8921 target_mourn_inferior ();
8926 /* If we are in 'target remote' mode and we are killing the only
8927 inferior, then we will tell gdbserver to exit and unpush the
8929 if (res
== -1 && !remote_multi_process_p (rs
)
8930 && number_of_live_inferiors () == 1)
8934 /* We've killed the remote end, we get to mourn it. If we are
8935 not in extended mode, mourning the inferior also unpushes
8936 remote_ops from the target stack, which closes the remote
8938 target_mourn_inferior ();
8943 error (_("Can't kill process"));
8946 /* Send a kill request to the target using the 'vKill' packet. */
8949 remote_vkill (int pid
, struct remote_state
*rs
)
8951 if (packet_support (PACKET_vKill
) == PACKET_DISABLE
)
8954 /* Tell the remote target to detach. */
8955 xsnprintf (rs
->buf
, get_remote_packet_size (), "vKill;%x", pid
);
8957 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8959 switch (packet_ok (rs
->buf
,
8960 &remote_protocol_packets
[PACKET_vKill
]))
8966 case PACKET_UNKNOWN
:
8969 internal_error (__FILE__
, __LINE__
, _("Bad result from packet_ok"));
8973 /* Send a kill request to the target using the 'k' packet. */
8976 remote_kill_k (void)
8978 /* Catch errors so the user can quit from gdb even when we
8979 aren't on speaking terms with the remote system. */
8984 CATCH (ex
, RETURN_MASK_ERROR
)
8986 if (ex
.error
== TARGET_CLOSE_ERROR
)
8988 /* If we got an (EOF) error that caused the target
8989 to go away, then we're done, that's what we wanted.
8990 "k" is susceptible to cause a premature EOF, given
8991 that the remote server isn't actually required to
8992 reply to "k", and it can happen that it doesn't
8993 even get to reply ACK to the "k". */
8997 /* Otherwise, something went wrong. We didn't actually kill
8998 the target. Just propagate the exception, and let the
8999 user or higher layers decide what to do. */
9000 throw_exception (ex
);
9006 remote_mourn (struct target_ops
*target
)
9008 struct remote_state
*rs
= get_remote_state ();
9010 /* In 'target remote' mode with one inferior, we close the connection. */
9011 if (!rs
->extended
&& number_of_live_inferiors () <= 1)
9013 unpush_target (target
);
9015 /* remote_close takes care of doing most of the clean up. */
9016 generic_mourn_inferior ();
9020 /* In case we got here due to an error, but we're going to stay
9022 rs
->waiting_for_stop_reply
= 0;
9024 /* If the current general thread belonged to the process we just
9025 detached from or has exited, the remote side current general
9026 thread becomes undefined. Considering a case like this:
9028 - We just got here due to a detach.
9029 - The process that we're detaching from happens to immediately
9030 report a global breakpoint being hit in non-stop mode, in the
9031 same thread we had selected before.
9032 - GDB attaches to this process again.
9033 - This event happens to be the next event we handle.
9035 GDB would consider that the current general thread didn't need to
9036 be set on the stub side (with Hg), since for all it knew,
9037 GENERAL_THREAD hadn't changed.
9039 Notice that although in all-stop mode, the remote server always
9040 sets the current thread to the thread reporting the stop event,
9041 that doesn't happen in non-stop mode; in non-stop, the stub *must
9042 not* change the current thread when reporting a breakpoint hit,
9043 due to the decoupling of event reporting and event handling.
9045 To keep things simple, we always invalidate our notion of the
9047 record_currthread (rs
, minus_one_ptid
);
9049 /* Call common code to mark the inferior as not running. */
9050 generic_mourn_inferior ();
9052 if (!have_inferiors ())
9054 if (!remote_multi_process_p (rs
))
9056 /* Check whether the target is running now - some remote stubs
9057 automatically restart after kill. */
9059 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9061 if (rs
->buf
[0] == 'S' || rs
->buf
[0] == 'T')
9063 /* Assume that the target has been restarted. Set
9064 inferior_ptid so that bits of core GDB realizes
9065 there's something here, e.g., so that the user can
9066 say "kill" again. */
9067 inferior_ptid
= magic_null_ptid
;
9074 extended_remote_supports_disable_randomization (struct target_ops
*self
)
9076 return packet_support (PACKET_QDisableRandomization
) == PACKET_ENABLE
;
9080 extended_remote_disable_randomization (int val
)
9082 struct remote_state
*rs
= get_remote_state ();
9085 xsnprintf (rs
->buf
, get_remote_packet_size (), "QDisableRandomization:%x",
9088 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
9090 error (_("Target does not support QDisableRandomization."));
9091 if (strcmp (reply
, "OK") != 0)
9092 error (_("Bogus QDisableRandomization reply from target: %s"), reply
);
9096 extended_remote_run (char *args
)
9098 struct remote_state
*rs
= get_remote_state ();
9100 const char *remote_exec_file
= get_remote_exec_file ();
9102 /* If the user has disabled vRun support, or we have detected that
9103 support is not available, do not try it. */
9104 if (packet_support (PACKET_vRun
) == PACKET_DISABLE
)
9107 strcpy (rs
->buf
, "vRun;");
9108 len
= strlen (rs
->buf
);
9110 if (strlen (remote_exec_file
) * 2 + len
>= get_remote_packet_size ())
9111 error (_("Remote file name too long for run packet"));
9112 len
+= 2 * bin2hex ((gdb_byte
*) remote_exec_file
, rs
->buf
+ len
,
9113 strlen (remote_exec_file
));
9115 gdb_assert (args
!= NULL
);
9118 struct cleanup
*back_to
;
9122 argv
= gdb_buildargv (args
);
9123 back_to
= make_cleanup_freeargv (argv
);
9124 for (i
= 0; argv
[i
] != NULL
; i
++)
9126 if (strlen (argv
[i
]) * 2 + 1 + len
>= get_remote_packet_size ())
9127 error (_("Argument list too long for run packet"));
9128 rs
->buf
[len
++] = ';';
9129 len
+= 2 * bin2hex ((gdb_byte
*) argv
[i
], rs
->buf
+ len
,
9132 do_cleanups (back_to
);
9135 rs
->buf
[len
++] = '\0';
9138 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9140 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_vRun
]))
9143 /* We have a wait response. All is well. */
9145 case PACKET_UNKNOWN
:
9148 if (remote_exec_file
[0] == '\0')
9149 error (_("Running the default executable on the remote target failed; "
9150 "try \"set remote exec-file\"?"));
9152 error (_("Running \"%s\" on the remote target failed"),
9155 gdb_assert_not_reached (_("bad switch"));
9159 /* In the extended protocol we want to be able to do things like
9160 "run" and have them basically work as expected. So we need
9161 a special create_inferior function. We support changing the
9162 executable file and the command line arguments, but not the
9166 extended_remote_create_inferior (struct target_ops
*ops
,
9167 char *exec_file
, char *args
,
9168 char **env
, int from_tty
)
9172 struct remote_state
*rs
= get_remote_state ();
9173 const char *remote_exec_file
= get_remote_exec_file ();
9175 /* If running asynchronously, register the target file descriptor
9176 with the event loop. */
9177 if (target_can_async_p ())
9180 /* Disable address space randomization if requested (and supported). */
9181 if (extended_remote_supports_disable_randomization (ops
))
9182 extended_remote_disable_randomization (disable_randomization
);
9184 /* Now restart the remote server. */
9185 run_worked
= extended_remote_run (args
) != -1;
9188 /* vRun was not supported. Fail if we need it to do what the
9190 if (remote_exec_file
[0])
9191 error (_("Remote target does not support \"set remote exec-file\""));
9193 error (_("Remote target does not support \"set args\" or run <ARGS>"));
9195 /* Fall back to "R". */
9196 extended_remote_restart ();
9199 if (!have_inferiors ())
9201 /* Clean up from the last time we ran, before we mark the target
9202 running again. This will mark breakpoints uninserted, and
9203 get_offsets may insert breakpoints. */
9204 init_thread_list ();
9205 init_wait_for_inferior ();
9208 /* vRun's success return is a stop reply. */
9209 stop_reply
= run_worked
? rs
->buf
: NULL
;
9210 add_current_inferior_and_thread (stop_reply
);
9212 /* Get updated offsets, if the stub uses qOffsets. */
9217 /* Given a location's target info BP_TGT and the packet buffer BUF, output
9218 the list of conditions (in agent expression bytecode format), if any, the
9219 target needs to evaluate. The output is placed into the packet buffer
9220 started from BUF and ended at BUF_END. */
9223 remote_add_target_side_condition (struct gdbarch
*gdbarch
,
9224 struct bp_target_info
*bp_tgt
, char *buf
,
9227 struct agent_expr
*aexpr
= NULL
;
9230 char *buf_start
= buf
;
9232 if (VEC_empty (agent_expr_p
, bp_tgt
->conditions
))
9235 buf
+= strlen (buf
);
9236 xsnprintf (buf
, buf_end
- buf
, "%s", ";");
9239 /* Send conditions to the target and free the vector. */
9241 VEC_iterate (agent_expr_p
, bp_tgt
->conditions
, ix
, aexpr
);
9244 xsnprintf (buf
, buf_end
- buf
, "X%x,", aexpr
->len
);
9245 buf
+= strlen (buf
);
9246 for (i
= 0; i
< aexpr
->len
; ++i
)
9247 buf
= pack_hex_byte (buf
, aexpr
->buf
[i
]);
9254 remote_add_target_side_commands (struct gdbarch
*gdbarch
,
9255 struct bp_target_info
*bp_tgt
, char *buf
)
9257 struct agent_expr
*aexpr
= NULL
;
9260 if (VEC_empty (agent_expr_p
, bp_tgt
->tcommands
))
9263 buf
+= strlen (buf
);
9265 sprintf (buf
, ";cmds:%x,", bp_tgt
->persist
);
9266 buf
+= strlen (buf
);
9268 /* Concatenate all the agent expressions that are commands into the
9271 VEC_iterate (agent_expr_p
, bp_tgt
->tcommands
, ix
, aexpr
);
9274 sprintf (buf
, "X%x,", aexpr
->len
);
9275 buf
+= strlen (buf
);
9276 for (i
= 0; i
< aexpr
->len
; ++i
)
9277 buf
= pack_hex_byte (buf
, aexpr
->buf
[i
]);
9282 /* Insert a breakpoint. On targets that have software breakpoint
9283 support, we ask the remote target to do the work; on targets
9284 which don't, we insert a traditional memory breakpoint. */
9287 remote_insert_breakpoint (struct target_ops
*ops
,
9288 struct gdbarch
*gdbarch
,
9289 struct bp_target_info
*bp_tgt
)
9291 /* Try the "Z" s/w breakpoint packet if it is not already disabled.
9292 If it succeeds, then set the support to PACKET_ENABLE. If it
9293 fails, and the user has explicitly requested the Z support then
9294 report an error, otherwise, mark it disabled and go on. */
9296 if (packet_support (PACKET_Z0
) != PACKET_DISABLE
)
9298 CORE_ADDR addr
= bp_tgt
->reqstd_address
;
9299 struct remote_state
*rs
;
9302 struct condition_list
*cond
= NULL
;
9304 /* Make sure the remote is pointing at the right process, if
9306 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
9307 set_general_process ();
9309 gdbarch_remote_breakpoint_from_pc (gdbarch
, &addr
, &bpsize
);
9311 rs
= get_remote_state ();
9313 endbuf
= rs
->buf
+ get_remote_packet_size ();
9318 addr
= (ULONGEST
) remote_address_masked (addr
);
9319 p
+= hexnumstr (p
, addr
);
9320 xsnprintf (p
, endbuf
- p
, ",%d", bpsize
);
9322 if (remote_supports_cond_breakpoints (ops
))
9323 remote_add_target_side_condition (gdbarch
, bp_tgt
, p
, endbuf
);
9325 if (remote_can_run_breakpoint_commands (ops
))
9326 remote_add_target_side_commands (gdbarch
, bp_tgt
, p
);
9329 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9331 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
]))
9336 bp_tgt
->placed_address
= addr
;
9337 bp_tgt
->placed_size
= bpsize
;
9339 case PACKET_UNKNOWN
:
9344 /* If this breakpoint has target-side commands but this stub doesn't
9345 support Z0 packets, throw error. */
9346 if (!VEC_empty (agent_expr_p
, bp_tgt
->tcommands
))
9347 throw_error (NOT_SUPPORTED_ERROR
, _("\
9348 Target doesn't support breakpoints that have target side commands."));
9350 return memory_insert_breakpoint (ops
, gdbarch
, bp_tgt
);
9354 remote_remove_breakpoint (struct target_ops
*ops
,
9355 struct gdbarch
*gdbarch
,
9356 struct bp_target_info
*bp_tgt
)
9358 CORE_ADDR addr
= bp_tgt
->placed_address
;
9359 struct remote_state
*rs
= get_remote_state ();
9361 if (packet_support (PACKET_Z0
) != PACKET_DISABLE
)
9364 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
9366 /* Make sure the remote is pointing at the right process, if
9368 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
9369 set_general_process ();
9375 addr
= (ULONGEST
) remote_address_masked (bp_tgt
->placed_address
);
9376 p
+= hexnumstr (p
, addr
);
9377 xsnprintf (p
, endbuf
- p
, ",%d", bp_tgt
->placed_size
);
9380 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9382 return (rs
->buf
[0] == 'E');
9385 return memory_remove_breakpoint (ops
, gdbarch
, bp_tgt
);
9388 static enum Z_packet_type
9389 watchpoint_to_Z_packet (int type
)
9394 return Z_PACKET_WRITE_WP
;
9397 return Z_PACKET_READ_WP
;
9400 return Z_PACKET_ACCESS_WP
;
9403 internal_error (__FILE__
, __LINE__
,
9404 _("hw_bp_to_z: bad watchpoint type %d"), type
);
9409 remote_insert_watchpoint (struct target_ops
*self
, CORE_ADDR addr
, int len
,
9410 enum target_hw_bp_type type
, struct expression
*cond
)
9412 struct remote_state
*rs
= get_remote_state ();
9413 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
9415 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
9417 if (packet_support (PACKET_Z0
+ packet
) == PACKET_DISABLE
)
9420 /* Make sure the remote is pointing at the right process, if
9422 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
9423 set_general_process ();
9425 xsnprintf (rs
->buf
, endbuf
- rs
->buf
, "Z%x,", packet
);
9426 p
= strchr (rs
->buf
, '\0');
9427 addr
= remote_address_masked (addr
);
9428 p
+= hexnumstr (p
, (ULONGEST
) addr
);
9429 xsnprintf (p
, endbuf
- p
, ",%x", len
);
9432 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9434 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
+ packet
]))
9438 case PACKET_UNKNOWN
:
9443 internal_error (__FILE__
, __LINE__
,
9444 _("remote_insert_watchpoint: reached end of function"));
9448 remote_watchpoint_addr_within_range (struct target_ops
*target
, CORE_ADDR addr
,
9449 CORE_ADDR start
, int length
)
9451 CORE_ADDR diff
= remote_address_masked (addr
- start
);
9453 return diff
< length
;
9458 remote_remove_watchpoint (struct target_ops
*self
, CORE_ADDR addr
, int len
,
9459 enum target_hw_bp_type type
, struct expression
*cond
)
9461 struct remote_state
*rs
= get_remote_state ();
9462 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
9464 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
9466 if (packet_support (PACKET_Z0
+ packet
) == PACKET_DISABLE
)
9469 /* Make sure the remote is pointing at the right process, if
9471 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
9472 set_general_process ();
9474 xsnprintf (rs
->buf
, endbuf
- rs
->buf
, "z%x,", packet
);
9475 p
= strchr (rs
->buf
, '\0');
9476 addr
= remote_address_masked (addr
);
9477 p
+= hexnumstr (p
, (ULONGEST
) addr
);
9478 xsnprintf (p
, endbuf
- p
, ",%x", len
);
9480 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9482 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
+ packet
]))
9485 case PACKET_UNKNOWN
:
9490 internal_error (__FILE__
, __LINE__
,
9491 _("remote_remove_watchpoint: reached end of function"));
9495 int remote_hw_watchpoint_limit
= -1;
9496 int remote_hw_watchpoint_length_limit
= -1;
9497 int remote_hw_breakpoint_limit
= -1;
9500 remote_region_ok_for_hw_watchpoint (struct target_ops
*self
,
9501 CORE_ADDR addr
, int len
)
9503 if (remote_hw_watchpoint_length_limit
== 0)
9505 else if (remote_hw_watchpoint_length_limit
< 0)
9507 else if (len
<= remote_hw_watchpoint_length_limit
)
9514 remote_check_watch_resources (struct target_ops
*self
,
9515 enum bptype type
, int cnt
, int ot
)
9517 if (type
== bp_hardware_breakpoint
)
9519 if (remote_hw_breakpoint_limit
== 0)
9521 else if (remote_hw_breakpoint_limit
< 0)
9523 else if (cnt
<= remote_hw_breakpoint_limit
)
9528 if (remote_hw_watchpoint_limit
== 0)
9530 else if (remote_hw_watchpoint_limit
< 0)
9534 else if (cnt
<= remote_hw_watchpoint_limit
)
9540 /* The to_stopped_by_sw_breakpoint method of target remote. */
9543 remote_stopped_by_sw_breakpoint (struct target_ops
*ops
)
9545 struct thread_info
*thread
= inferior_thread ();
9547 return (thread
->priv
!= NULL
9548 && thread
->priv
->stop_reason
== TARGET_STOPPED_BY_SW_BREAKPOINT
);
9551 /* The to_supports_stopped_by_sw_breakpoint method of target
9555 remote_supports_stopped_by_sw_breakpoint (struct target_ops
*ops
)
9557 struct remote_state
*rs
= get_remote_state ();
9559 return (packet_support (PACKET_swbreak_feature
) == PACKET_ENABLE
);
9562 /* The to_stopped_by_hw_breakpoint method of target remote. */
9565 remote_stopped_by_hw_breakpoint (struct target_ops
*ops
)
9567 struct thread_info
*thread
= inferior_thread ();
9569 return (thread
->priv
!= NULL
9570 && thread
->priv
->stop_reason
== TARGET_STOPPED_BY_HW_BREAKPOINT
);
9573 /* The to_supports_stopped_by_hw_breakpoint method of target
9577 remote_supports_stopped_by_hw_breakpoint (struct target_ops
*ops
)
9579 struct remote_state
*rs
= get_remote_state ();
9581 return (packet_support (PACKET_hwbreak_feature
) == PACKET_ENABLE
);
9585 remote_stopped_by_watchpoint (struct target_ops
*ops
)
9587 struct thread_info
*thread
= inferior_thread ();
9589 return (thread
->priv
!= NULL
9590 && thread
->priv
->stop_reason
== TARGET_STOPPED_BY_WATCHPOINT
);
9594 remote_stopped_data_address (struct target_ops
*target
, CORE_ADDR
*addr_p
)
9596 struct thread_info
*thread
= inferior_thread ();
9598 if (thread
->priv
!= NULL
9599 && thread
->priv
->stop_reason
== TARGET_STOPPED_BY_WATCHPOINT
)
9601 *addr_p
= thread
->priv
->watch_data_address
;
9610 remote_insert_hw_breakpoint (struct target_ops
*self
, struct gdbarch
*gdbarch
,
9611 struct bp_target_info
*bp_tgt
)
9613 CORE_ADDR addr
= bp_tgt
->reqstd_address
;
9614 struct remote_state
*rs
;
9619 /* The length field should be set to the size of a breakpoint
9620 instruction, even though we aren't inserting one ourselves. */
9622 gdbarch_remote_breakpoint_from_pc (gdbarch
, &addr
, &bpsize
);
9624 if (packet_support (PACKET_Z1
) == PACKET_DISABLE
)
9627 /* Make sure the remote is pointing at the right process, if
9629 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
9630 set_general_process ();
9632 rs
= get_remote_state ();
9634 endbuf
= rs
->buf
+ get_remote_packet_size ();
9640 addr
= remote_address_masked (addr
);
9641 p
+= hexnumstr (p
, (ULONGEST
) addr
);
9642 xsnprintf (p
, endbuf
- p
, ",%x", bpsize
);
9644 if (remote_supports_cond_breakpoints (self
))
9645 remote_add_target_side_condition (gdbarch
, bp_tgt
, p
, endbuf
);
9647 if (remote_can_run_breakpoint_commands (self
))
9648 remote_add_target_side_commands (gdbarch
, bp_tgt
, p
);
9651 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9653 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z1
]))
9656 if (rs
->buf
[1] == '.')
9658 message
= strchr (rs
->buf
+ 2, '.');
9660 error (_("Remote failure reply: %s"), message
+ 1);
9663 case PACKET_UNKNOWN
:
9666 bp_tgt
->placed_address
= addr
;
9667 bp_tgt
->placed_size
= bpsize
;
9670 internal_error (__FILE__
, __LINE__
,
9671 _("remote_insert_hw_breakpoint: reached end of function"));
9676 remote_remove_hw_breakpoint (struct target_ops
*self
, struct gdbarch
*gdbarch
,
9677 struct bp_target_info
*bp_tgt
)
9680 struct remote_state
*rs
= get_remote_state ();
9682 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
9684 if (packet_support (PACKET_Z1
) == PACKET_DISABLE
)
9687 /* Make sure the remote is pointing at the right process, if
9689 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
9690 set_general_process ();
9696 addr
= remote_address_masked (bp_tgt
->placed_address
);
9697 p
+= hexnumstr (p
, (ULONGEST
) addr
);
9698 xsnprintf (p
, endbuf
- p
, ",%x", bp_tgt
->placed_size
);
9701 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9703 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z1
]))
9706 case PACKET_UNKNOWN
:
9711 internal_error (__FILE__
, __LINE__
,
9712 _("remote_remove_hw_breakpoint: reached end of function"));
9715 /* Verify memory using the "qCRC:" request. */
9718 remote_verify_memory (struct target_ops
*ops
,
9719 const gdb_byte
*data
, CORE_ADDR lma
, ULONGEST size
)
9721 struct remote_state
*rs
= get_remote_state ();
9722 unsigned long host_crc
, target_crc
;
9725 /* It doesn't make sense to use qCRC if the remote target is
9726 connected but not running. */
9727 if (target_has_execution
&& packet_support (PACKET_qCRC
) != PACKET_DISABLE
)
9729 enum packet_result result
;
9731 /* Make sure the remote is pointing at the right process. */
9732 set_general_process ();
9734 /* FIXME: assumes lma can fit into long. */
9735 xsnprintf (rs
->buf
, get_remote_packet_size (), "qCRC:%lx,%lx",
9736 (long) lma
, (long) size
);
9739 /* Be clever; compute the host_crc before waiting for target
9741 host_crc
= xcrc32 (data
, size
, 0xffffffff);
9743 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9745 result
= packet_ok (rs
->buf
,
9746 &remote_protocol_packets
[PACKET_qCRC
]);
9747 if (result
== PACKET_ERROR
)
9749 else if (result
== PACKET_OK
)
9751 for (target_crc
= 0, tmp
= &rs
->buf
[1]; *tmp
; tmp
++)
9752 target_crc
= target_crc
* 16 + fromhex (*tmp
);
9754 return (host_crc
== target_crc
);
9758 return simple_verify_memory (ops
, data
, lma
, size
);
9761 /* compare-sections command
9763 With no arguments, compares each loadable section in the exec bfd
9764 with the same memory range on the target, and reports mismatches.
9765 Useful for verifying the image on the target against the exec file. */
9768 compare_sections_command (char *args
, int from_tty
)
9771 struct cleanup
*old_chain
;
9773 const char *sectname
;
9782 error (_("command cannot be used without an exec file"));
9784 /* Make sure the remote is pointing at the right process. */
9785 set_general_process ();
9787 if (args
!= NULL
&& strcmp (args
, "-r") == 0)
9793 for (s
= exec_bfd
->sections
; s
; s
= s
->next
)
9795 if (!(s
->flags
& SEC_LOAD
))
9796 continue; /* Skip non-loadable section. */
9798 if (read_only
&& (s
->flags
& SEC_READONLY
) == 0)
9799 continue; /* Skip writeable sections */
9801 size
= bfd_get_section_size (s
);
9803 continue; /* Skip zero-length section. */
9805 sectname
= bfd_get_section_name (exec_bfd
, s
);
9806 if (args
&& strcmp (args
, sectname
) != 0)
9807 continue; /* Not the section selected by user. */
9809 matched
= 1; /* Do this section. */
9812 sectdata
= (gdb_byte
*) xmalloc (size
);
9813 old_chain
= make_cleanup (xfree
, sectdata
);
9814 bfd_get_section_contents (exec_bfd
, s
, sectdata
, 0, size
);
9816 res
= target_verify_memory (sectdata
, lma
, size
);
9819 error (_("target memory fault, section %s, range %s -- %s"), sectname
,
9820 paddress (target_gdbarch (), lma
),
9821 paddress (target_gdbarch (), lma
+ size
));
9823 printf_filtered ("Section %s, range %s -- %s: ", sectname
,
9824 paddress (target_gdbarch (), lma
),
9825 paddress (target_gdbarch (), lma
+ size
));
9827 printf_filtered ("matched.\n");
9830 printf_filtered ("MIS-MATCHED!\n");
9834 do_cleanups (old_chain
);
9837 warning (_("One or more sections of the target image does not match\n\
9838 the loaded file\n"));
9839 if (args
&& !matched
)
9840 printf_filtered (_("No loaded section named '%s'.\n"), args
);
9843 /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET
9844 into remote target. The number of bytes written to the remote
9845 target is returned, or -1 for error. */
9847 static enum target_xfer_status
9848 remote_write_qxfer (struct target_ops
*ops
, const char *object_name
,
9849 const char *annex
, const gdb_byte
*writebuf
,
9850 ULONGEST offset
, LONGEST len
, ULONGEST
*xfered_len
,
9851 struct packet_config
*packet
)
9855 struct remote_state
*rs
= get_remote_state ();
9856 int max_size
= get_memory_write_packet_size ();
9858 if (packet
->support
== PACKET_DISABLE
)
9859 return TARGET_XFER_E_IO
;
9861 /* Insert header. */
9862 i
= snprintf (rs
->buf
, max_size
,
9863 "qXfer:%s:write:%s:%s:",
9864 object_name
, annex
? annex
: "",
9865 phex_nz (offset
, sizeof offset
));
9866 max_size
-= (i
+ 1);
9868 /* Escape as much data as fits into rs->buf. */
9869 buf_len
= remote_escape_output
9870 (writebuf
, len
, 1, (gdb_byte
*) rs
->buf
+ i
, &max_size
, max_size
);
9872 if (putpkt_binary (rs
->buf
, i
+ buf_len
) < 0
9873 || getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) < 0
9874 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
9875 return TARGET_XFER_E_IO
;
9877 unpack_varlen_hex (rs
->buf
, &n
);
9880 return TARGET_XFER_OK
;
9883 /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet.
9884 Data at OFFSET, of up to LEN bytes, is read into READBUF; the
9885 number of bytes read is returned, or 0 for EOF, or -1 for error.
9886 The number of bytes read may be less than LEN without indicating an
9887 EOF. PACKET is checked and updated to indicate whether the remote
9888 target supports this object. */
9890 static enum target_xfer_status
9891 remote_read_qxfer (struct target_ops
*ops
, const char *object_name
,
9893 gdb_byte
*readbuf
, ULONGEST offset
, LONGEST len
,
9894 ULONGEST
*xfered_len
,
9895 struct packet_config
*packet
)
9897 struct remote_state
*rs
= get_remote_state ();
9898 LONGEST i
, n
, packet_len
;
9900 if (packet
->support
== PACKET_DISABLE
)
9901 return TARGET_XFER_E_IO
;
9903 /* Check whether we've cached an end-of-object packet that matches
9905 if (rs
->finished_object
)
9907 if (strcmp (object_name
, rs
->finished_object
) == 0
9908 && strcmp (annex
? annex
: "", rs
->finished_annex
) == 0
9909 && offset
== rs
->finished_offset
)
9910 return TARGET_XFER_EOF
;
9913 /* Otherwise, we're now reading something different. Discard
9915 xfree (rs
->finished_object
);
9916 xfree (rs
->finished_annex
);
9917 rs
->finished_object
= NULL
;
9918 rs
->finished_annex
= NULL
;
9921 /* Request only enough to fit in a single packet. The actual data
9922 may not, since we don't know how much of it will need to be escaped;
9923 the target is free to respond with slightly less data. We subtract
9924 five to account for the response type and the protocol frame. */
9925 n
= min (get_remote_packet_size () - 5, len
);
9926 snprintf (rs
->buf
, get_remote_packet_size () - 4, "qXfer:%s:read:%s:%s,%s",
9927 object_name
, annex
? annex
: "",
9928 phex_nz (offset
, sizeof offset
),
9929 phex_nz (n
, sizeof n
));
9930 i
= putpkt (rs
->buf
);
9932 return TARGET_XFER_E_IO
;
9935 packet_len
= getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0);
9936 if (packet_len
< 0 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
9937 return TARGET_XFER_E_IO
;
9939 if (rs
->buf
[0] != 'l' && rs
->buf
[0] != 'm')
9940 error (_("Unknown remote qXfer reply: %s"), rs
->buf
);
9942 /* 'm' means there is (or at least might be) more data after this
9943 batch. That does not make sense unless there's at least one byte
9944 of data in this reply. */
9945 if (rs
->buf
[0] == 'm' && packet_len
== 1)
9946 error (_("Remote qXfer reply contained no data."));
9948 /* Got some data. */
9949 i
= remote_unescape_input ((gdb_byte
*) rs
->buf
+ 1,
9950 packet_len
- 1, readbuf
, n
);
9952 /* 'l' is an EOF marker, possibly including a final block of data,
9953 or possibly empty. If we have the final block of a non-empty
9954 object, record this fact to bypass a subsequent partial read. */
9955 if (rs
->buf
[0] == 'l' && offset
+ i
> 0)
9957 rs
->finished_object
= xstrdup (object_name
);
9958 rs
->finished_annex
= xstrdup (annex
? annex
: "");
9959 rs
->finished_offset
= offset
+ i
;
9963 return TARGET_XFER_EOF
;
9967 return TARGET_XFER_OK
;
9971 static enum target_xfer_status
9972 remote_xfer_partial (struct target_ops
*ops
, enum target_object object
,
9973 const char *annex
, gdb_byte
*readbuf
,
9974 const gdb_byte
*writebuf
, ULONGEST offset
, ULONGEST len
,
9975 ULONGEST
*xfered_len
)
9977 struct remote_state
*rs
;
9981 int unit_size
= gdbarch_addressable_memory_unit_size (target_gdbarch ());
9983 set_remote_traceframe ();
9984 set_general_thread (inferior_ptid
);
9986 rs
= get_remote_state ();
9988 /* Handle memory using the standard memory routines. */
9989 if (object
== TARGET_OBJECT_MEMORY
)
9991 /* If the remote target is connected but not running, we should
9992 pass this request down to a lower stratum (e.g. the executable
9994 if (!target_has_execution
)
9995 return TARGET_XFER_EOF
;
9997 if (writebuf
!= NULL
)
9998 return remote_write_bytes (offset
, writebuf
, len
, unit_size
,
10001 return remote_read_bytes (ops
, offset
, readbuf
, len
, unit_size
,
10005 /* Handle SPU memory using qxfer packets. */
10006 if (object
== TARGET_OBJECT_SPU
)
10009 return remote_read_qxfer (ops
, "spu", annex
, readbuf
, offset
, len
,
10010 xfered_len
, &remote_protocol_packets
10011 [PACKET_qXfer_spu_read
]);
10013 return remote_write_qxfer (ops
, "spu", annex
, writebuf
, offset
, len
,
10014 xfered_len
, &remote_protocol_packets
10015 [PACKET_qXfer_spu_write
]);
10018 /* Handle extra signal info using qxfer packets. */
10019 if (object
== TARGET_OBJECT_SIGNAL_INFO
)
10022 return remote_read_qxfer (ops
, "siginfo", annex
, readbuf
, offset
, len
,
10023 xfered_len
, &remote_protocol_packets
10024 [PACKET_qXfer_siginfo_read
]);
10026 return remote_write_qxfer (ops
, "siginfo", annex
,
10027 writebuf
, offset
, len
, xfered_len
,
10028 &remote_protocol_packets
10029 [PACKET_qXfer_siginfo_write
]);
10032 if (object
== TARGET_OBJECT_STATIC_TRACE_DATA
)
10035 return remote_read_qxfer (ops
, "statictrace", annex
,
10036 readbuf
, offset
, len
, xfered_len
,
10037 &remote_protocol_packets
10038 [PACKET_qXfer_statictrace_read
]);
10040 return TARGET_XFER_E_IO
;
10043 /* Only handle flash writes. */
10044 if (writebuf
!= NULL
)
10050 case TARGET_OBJECT_FLASH
:
10051 return remote_flash_write (ops
, offset
, len
, xfered_len
,
10055 return TARGET_XFER_E_IO
;
10059 /* Map pre-existing objects onto letters. DO NOT do this for new
10060 objects!!! Instead specify new query packets. */
10063 case TARGET_OBJECT_AVR
:
10067 case TARGET_OBJECT_AUXV
:
10068 gdb_assert (annex
== NULL
);
10069 return remote_read_qxfer (ops
, "auxv", annex
, readbuf
, offset
, len
,
10071 &remote_protocol_packets
[PACKET_qXfer_auxv
]);
10073 case TARGET_OBJECT_AVAILABLE_FEATURES
:
10074 return remote_read_qxfer
10075 (ops
, "features", annex
, readbuf
, offset
, len
, xfered_len
,
10076 &remote_protocol_packets
[PACKET_qXfer_features
]);
10078 case TARGET_OBJECT_LIBRARIES
:
10079 return remote_read_qxfer
10080 (ops
, "libraries", annex
, readbuf
, offset
, len
, xfered_len
,
10081 &remote_protocol_packets
[PACKET_qXfer_libraries
]);
10083 case TARGET_OBJECT_LIBRARIES_SVR4
:
10084 return remote_read_qxfer
10085 (ops
, "libraries-svr4", annex
, readbuf
, offset
, len
, xfered_len
,
10086 &remote_protocol_packets
[PACKET_qXfer_libraries_svr4
]);
10088 case TARGET_OBJECT_MEMORY_MAP
:
10089 gdb_assert (annex
== NULL
);
10090 return remote_read_qxfer (ops
, "memory-map", annex
, readbuf
, offset
, len
,
10092 &remote_protocol_packets
[PACKET_qXfer_memory_map
]);
10094 case TARGET_OBJECT_OSDATA
:
10095 /* Should only get here if we're connected. */
10096 gdb_assert (rs
->remote_desc
);
10097 return remote_read_qxfer
10098 (ops
, "osdata", annex
, readbuf
, offset
, len
, xfered_len
,
10099 &remote_protocol_packets
[PACKET_qXfer_osdata
]);
10101 case TARGET_OBJECT_THREADS
:
10102 gdb_assert (annex
== NULL
);
10103 return remote_read_qxfer (ops
, "threads", annex
, readbuf
, offset
, len
,
10105 &remote_protocol_packets
[PACKET_qXfer_threads
]);
10107 case TARGET_OBJECT_TRACEFRAME_INFO
:
10108 gdb_assert (annex
== NULL
);
10109 return remote_read_qxfer
10110 (ops
, "traceframe-info", annex
, readbuf
, offset
, len
, xfered_len
,
10111 &remote_protocol_packets
[PACKET_qXfer_traceframe_info
]);
10113 case TARGET_OBJECT_FDPIC
:
10114 return remote_read_qxfer (ops
, "fdpic", annex
, readbuf
, offset
, len
,
10116 &remote_protocol_packets
[PACKET_qXfer_fdpic
]);
10118 case TARGET_OBJECT_OPENVMS_UIB
:
10119 return remote_read_qxfer (ops
, "uib", annex
, readbuf
, offset
, len
,
10121 &remote_protocol_packets
[PACKET_qXfer_uib
]);
10123 case TARGET_OBJECT_BTRACE
:
10124 return remote_read_qxfer (ops
, "btrace", annex
, readbuf
, offset
, len
,
10126 &remote_protocol_packets
[PACKET_qXfer_btrace
]);
10128 case TARGET_OBJECT_BTRACE_CONF
:
10129 return remote_read_qxfer (ops
, "btrace-conf", annex
, readbuf
, offset
,
10131 &remote_protocol_packets
[PACKET_qXfer_btrace_conf
]);
10133 case TARGET_OBJECT_EXEC_FILE
:
10134 return remote_read_qxfer (ops
, "exec-file", annex
, readbuf
, offset
,
10136 &remote_protocol_packets
[PACKET_qXfer_exec_file
]);
10139 return TARGET_XFER_E_IO
;
10142 /* Minimum outbuf size is get_remote_packet_size (). If LEN is not
10143 large enough let the caller deal with it. */
10144 if (len
< get_remote_packet_size ())
10145 return TARGET_XFER_E_IO
;
10146 len
= get_remote_packet_size ();
10148 /* Except for querying the minimum buffer size, target must be open. */
10149 if (!rs
->remote_desc
)
10150 error (_("remote query is only available after target open"));
10152 gdb_assert (annex
!= NULL
);
10153 gdb_assert (readbuf
!= NULL
);
10157 *p2
++ = query_type
;
10159 /* We used one buffer char for the remote protocol q command and
10160 another for the query type. As the remote protocol encapsulation
10161 uses 4 chars plus one extra in case we are debugging
10162 (remote_debug), we have PBUFZIZ - 7 left to pack the query
10165 while (annex
[i
] && (i
< (get_remote_packet_size () - 8)))
10167 /* Bad caller may have sent forbidden characters. */
10168 gdb_assert (isprint (annex
[i
]) && annex
[i
] != '$' && annex
[i
] != '#');
10173 gdb_assert (annex
[i
] == '\0');
10175 i
= putpkt (rs
->buf
);
10177 return TARGET_XFER_E_IO
;
10179 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
10180 strcpy ((char *) readbuf
, rs
->buf
);
10182 *xfered_len
= strlen ((char *) readbuf
);
10183 return TARGET_XFER_OK
;
10187 remote_search_memory (struct target_ops
* ops
,
10188 CORE_ADDR start_addr
, ULONGEST search_space_len
,
10189 const gdb_byte
*pattern
, ULONGEST pattern_len
,
10190 CORE_ADDR
*found_addrp
)
10192 int addr_size
= gdbarch_addr_bit (target_gdbarch ()) / 8;
10193 struct remote_state
*rs
= get_remote_state ();
10194 int max_size
= get_memory_write_packet_size ();
10195 struct packet_config
*packet
=
10196 &remote_protocol_packets
[PACKET_qSearch_memory
];
10197 /* Number of packet bytes used to encode the pattern;
10198 this could be more than PATTERN_LEN due to escape characters. */
10199 int escaped_pattern_len
;
10200 /* Amount of pattern that was encodable in the packet. */
10201 int used_pattern_len
;
10204 ULONGEST found_addr
;
10206 /* Don't go to the target if we don't have to.
10207 This is done before checking packet->support to avoid the possibility that
10208 a success for this edge case means the facility works in general. */
10209 if (pattern_len
> search_space_len
)
10211 if (pattern_len
== 0)
10213 *found_addrp
= start_addr
;
10217 /* If we already know the packet isn't supported, fall back to the simple
10218 way of searching memory. */
10220 if (packet_config_support (packet
) == PACKET_DISABLE
)
10222 /* Target doesn't provided special support, fall back and use the
10223 standard support (copy memory and do the search here). */
10224 return simple_search_memory (ops
, start_addr
, search_space_len
,
10225 pattern
, pattern_len
, found_addrp
);
10228 /* Make sure the remote is pointing at the right process. */
10229 set_general_process ();
10231 /* Insert header. */
10232 i
= snprintf (rs
->buf
, max_size
,
10233 "qSearch:memory:%s;%s;",
10234 phex_nz (start_addr
, addr_size
),
10235 phex_nz (search_space_len
, sizeof (search_space_len
)));
10236 max_size
-= (i
+ 1);
10238 /* Escape as much data as fits into rs->buf. */
10239 escaped_pattern_len
=
10240 remote_escape_output (pattern
, pattern_len
, 1, (gdb_byte
*) rs
->buf
+ i
,
10241 &used_pattern_len
, max_size
);
10243 /* Bail if the pattern is too large. */
10244 if (used_pattern_len
!= pattern_len
)
10245 error (_("Pattern is too large to transmit to remote target."));
10247 if (putpkt_binary (rs
->buf
, i
+ escaped_pattern_len
) < 0
10248 || getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) < 0
10249 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
10251 /* The request may not have worked because the command is not
10252 supported. If so, fall back to the simple way. */
10253 if (packet
->support
== PACKET_DISABLE
)
10255 return simple_search_memory (ops
, start_addr
, search_space_len
,
10256 pattern
, pattern_len
, found_addrp
);
10261 if (rs
->buf
[0] == '0')
10263 else if (rs
->buf
[0] == '1')
10266 if (rs
->buf
[1] != ',')
10267 error (_("Unknown qSearch:memory reply: %s"), rs
->buf
);
10268 unpack_varlen_hex (rs
->buf
+ 2, &found_addr
);
10269 *found_addrp
= found_addr
;
10272 error (_("Unknown qSearch:memory reply: %s"), rs
->buf
);
10278 remote_rcmd (struct target_ops
*self
, const char *command
,
10279 struct ui_file
*outbuf
)
10281 struct remote_state
*rs
= get_remote_state ();
10284 if (!rs
->remote_desc
)
10285 error (_("remote rcmd is only available after target open"));
10287 /* Send a NULL command across as an empty command. */
10288 if (command
== NULL
)
10291 /* The query prefix. */
10292 strcpy (rs
->buf
, "qRcmd,");
10293 p
= strchr (rs
->buf
, '\0');
10295 if ((strlen (rs
->buf
) + strlen (command
) * 2 + 8/*misc*/)
10296 > get_remote_packet_size ())
10297 error (_("\"monitor\" command ``%s'' is too long."), command
);
10299 /* Encode the actual command. */
10300 bin2hex ((const gdb_byte
*) command
, p
, strlen (command
));
10302 if (putpkt (rs
->buf
) < 0)
10303 error (_("Communication problem with target."));
10305 /* get/display the response */
10310 /* XXX - see also remote_get_noisy_reply(). */
10311 QUIT
; /* Allow user to bail out with ^C. */
10313 if (getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) == -1)
10315 /* Timeout. Continue to (try to) read responses.
10316 This is better than stopping with an error, assuming the stub
10317 is still executing the (long) monitor command.
10318 If needed, the user can interrupt gdb using C-c, obtaining
10319 an effect similar to stop on timeout. */
10323 if (buf
[0] == '\0')
10324 error (_("Target does not support this command."));
10325 if (buf
[0] == 'O' && buf
[1] != 'K')
10327 remote_console_output (buf
+ 1); /* 'O' message from stub. */
10330 if (strcmp (buf
, "OK") == 0)
10332 if (strlen (buf
) == 3 && buf
[0] == 'E'
10333 && isdigit (buf
[1]) && isdigit (buf
[2]))
10335 error (_("Protocol error with Rcmd"));
10337 for (p
= buf
; p
[0] != '\0' && p
[1] != '\0'; p
+= 2)
10339 char c
= (fromhex (p
[0]) << 4) + fromhex (p
[1]);
10341 fputc_unfiltered (c
, outbuf
);
10347 static VEC(mem_region_s
) *
10348 remote_memory_map (struct target_ops
*ops
)
10350 VEC(mem_region_s
) *result
= NULL
;
10351 char *text
= target_read_stralloc (¤t_target
,
10352 TARGET_OBJECT_MEMORY_MAP
, NULL
);
10356 struct cleanup
*back_to
= make_cleanup (xfree
, text
);
10358 result
= parse_memory_map (text
);
10359 do_cleanups (back_to
);
10366 packet_command (char *args
, int from_tty
)
10368 struct remote_state
*rs
= get_remote_state ();
10370 if (!rs
->remote_desc
)
10371 error (_("command can only be used with remote target"));
10374 error (_("remote-packet command requires packet text as argument"));
10376 puts_filtered ("sending: ");
10377 print_packet (args
);
10378 puts_filtered ("\n");
10381 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
10382 puts_filtered ("received: ");
10383 print_packet (rs
->buf
);
10384 puts_filtered ("\n");
10388 /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */
10390 static void display_thread_info (struct gdb_ext_thread_info
*info
);
10392 static void threadset_test_cmd (char *cmd
, int tty
);
10394 static void threadalive_test (char *cmd
, int tty
);
10396 static void threadlist_test_cmd (char *cmd
, int tty
);
10398 int get_and_display_threadinfo (threadref
*ref
);
10400 static void threadinfo_test_cmd (char *cmd
, int tty
);
10402 static int thread_display_step (threadref
*ref
, void *context
);
10404 static void threadlist_update_test_cmd (char *cmd
, int tty
);
10406 static void init_remote_threadtests (void);
10408 #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */
10411 threadset_test_cmd (char *cmd
, int tty
)
10413 int sample_thread
= SAMPLE_THREAD
;
10415 printf_filtered (_("Remote threadset test\n"));
10416 set_general_thread (sample_thread
);
10421 threadalive_test (char *cmd
, int tty
)
10423 int sample_thread
= SAMPLE_THREAD
;
10424 int pid
= ptid_get_pid (inferior_ptid
);
10425 ptid_t ptid
= ptid_build (pid
, sample_thread
, 0);
10427 if (remote_thread_alive (ptid
))
10428 printf_filtered ("PASS: Thread alive test\n");
10430 printf_filtered ("FAIL: Thread alive test\n");
10433 void output_threadid (char *title
, threadref
*ref
);
10436 output_threadid (char *title
, threadref
*ref
)
10440 pack_threadid (&hexid
[0], ref
); /* Convert threead id into hex. */
10442 printf_filtered ("%s %s\n", title
, (&hexid
[0]));
10446 threadlist_test_cmd (char *cmd
, int tty
)
10449 threadref nextthread
;
10450 int done
, result_count
;
10451 threadref threadlist
[3];
10453 printf_filtered ("Remote Threadlist test\n");
10454 if (!remote_get_threadlist (startflag
, &nextthread
, 3, &done
,
10455 &result_count
, &threadlist
[0]))
10456 printf_filtered ("FAIL: threadlist test\n");
10459 threadref
*scan
= threadlist
;
10460 threadref
*limit
= scan
+ result_count
;
10462 while (scan
< limit
)
10463 output_threadid (" thread ", scan
++);
10468 display_thread_info (struct gdb_ext_thread_info
*info
)
10470 output_threadid ("Threadid: ", &info
->threadid
);
10471 printf_filtered ("Name: %s\n ", info
->shortname
);
10472 printf_filtered ("State: %s\n", info
->display
);
10473 printf_filtered ("other: %s\n\n", info
->more_display
);
10477 get_and_display_threadinfo (threadref
*ref
)
10481 struct gdb_ext_thread_info threadinfo
;
10483 set
= TAG_THREADID
| TAG_EXISTS
| TAG_THREADNAME
10484 | TAG_MOREDISPLAY
| TAG_DISPLAY
;
10485 if (0 != (result
= remote_get_threadinfo (ref
, set
, &threadinfo
)))
10486 display_thread_info (&threadinfo
);
10491 threadinfo_test_cmd (char *cmd
, int tty
)
10493 int athread
= SAMPLE_THREAD
;
10497 int_to_threadref (&thread
, athread
);
10498 printf_filtered ("Remote Threadinfo test\n");
10499 if (!get_and_display_threadinfo (&thread
))
10500 printf_filtered ("FAIL cannot get thread info\n");
10504 thread_display_step (threadref
*ref
, void *context
)
10506 /* output_threadid(" threadstep ",ref); *//* simple test */
10507 return get_and_display_threadinfo (ref
);
10511 threadlist_update_test_cmd (char *cmd
, int tty
)
10513 printf_filtered ("Remote Threadlist update test\n");
10514 remote_threadlist_iterator (thread_display_step
, 0, CRAZY_MAX_THREADS
);
10518 init_remote_threadtests (void)
10520 add_com ("tlist", class_obscure
, threadlist_test_cmd
,
10521 _("Fetch and print the remote list of "
10522 "thread identifiers, one pkt only"));
10523 add_com ("tinfo", class_obscure
, threadinfo_test_cmd
,
10524 _("Fetch and display info about one thread"));
10525 add_com ("tset", class_obscure
, threadset_test_cmd
,
10526 _("Test setting to a different thread"));
10527 add_com ("tupd", class_obscure
, threadlist_update_test_cmd
,
10528 _("Iterate through updating all remote thread info"));
10529 add_com ("talive", class_obscure
, threadalive_test
,
10530 _(" Remote thread alive test "));
10535 /* Convert a thread ID to a string. Returns the string in a static
10539 remote_pid_to_str (struct target_ops
*ops
, ptid_t ptid
)
10541 static char buf
[64];
10542 struct remote_state
*rs
= get_remote_state ();
10544 if (ptid_equal (ptid
, null_ptid
))
10545 return normal_pid_to_str (ptid
);
10546 else if (ptid_is_pid (ptid
))
10548 /* Printing an inferior target id. */
10550 /* When multi-process extensions are off, there's no way in the
10551 remote protocol to know the remote process id, if there's any
10552 at all. There's one exception --- when we're connected with
10553 target extended-remote, and we manually attached to a process
10554 with "attach PID". We don't record anywhere a flag that
10555 allows us to distinguish that case from the case of
10556 connecting with extended-remote and the stub already being
10557 attached to a process, and reporting yes to qAttached, hence
10558 no smart special casing here. */
10559 if (!remote_multi_process_p (rs
))
10561 xsnprintf (buf
, sizeof buf
, "Remote target");
10565 return normal_pid_to_str (ptid
);
10569 if (ptid_equal (magic_null_ptid
, ptid
))
10570 xsnprintf (buf
, sizeof buf
, "Thread <main>");
10571 else if (remote_multi_process_p (rs
))
10572 if (ptid_get_lwp (ptid
) == 0)
10573 return normal_pid_to_str (ptid
);
10575 xsnprintf (buf
, sizeof buf
, "Thread %d.%ld",
10576 ptid_get_pid (ptid
), ptid_get_lwp (ptid
));
10578 xsnprintf (buf
, sizeof buf
, "Thread %ld",
10579 ptid_get_lwp (ptid
));
10584 /* Get the address of the thread local variable in OBJFILE which is
10585 stored at OFFSET within the thread local storage for thread PTID. */
10588 remote_get_thread_local_address (struct target_ops
*ops
,
10589 ptid_t ptid
, CORE_ADDR lm
, CORE_ADDR offset
)
10591 if (packet_support (PACKET_qGetTLSAddr
) != PACKET_DISABLE
)
10593 struct remote_state
*rs
= get_remote_state ();
10595 char *endp
= rs
->buf
+ get_remote_packet_size ();
10596 enum packet_result result
;
10598 strcpy (p
, "qGetTLSAddr:");
10600 p
= write_ptid (p
, endp
, ptid
);
10602 p
+= hexnumstr (p
, offset
);
10604 p
+= hexnumstr (p
, lm
);
10608 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
10609 result
= packet_ok (rs
->buf
,
10610 &remote_protocol_packets
[PACKET_qGetTLSAddr
]);
10611 if (result
== PACKET_OK
)
10615 unpack_varlen_hex (rs
->buf
, &result
);
10618 else if (result
== PACKET_UNKNOWN
)
10619 throw_error (TLS_GENERIC_ERROR
,
10620 _("Remote target doesn't support qGetTLSAddr packet"));
10622 throw_error (TLS_GENERIC_ERROR
,
10623 _("Remote target failed to process qGetTLSAddr request"));
10626 throw_error (TLS_GENERIC_ERROR
,
10627 _("TLS not supported or disabled on this target"));
10632 /* Provide thread local base, i.e. Thread Information Block address.
10633 Returns 1 if ptid is found and thread_local_base is non zero. */
10636 remote_get_tib_address (struct target_ops
*self
, ptid_t ptid
, CORE_ADDR
*addr
)
10638 if (packet_support (PACKET_qGetTIBAddr
) != PACKET_DISABLE
)
10640 struct remote_state
*rs
= get_remote_state ();
10642 char *endp
= rs
->buf
+ get_remote_packet_size ();
10643 enum packet_result result
;
10645 strcpy (p
, "qGetTIBAddr:");
10647 p
= write_ptid (p
, endp
, ptid
);
10651 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
10652 result
= packet_ok (rs
->buf
,
10653 &remote_protocol_packets
[PACKET_qGetTIBAddr
]);
10654 if (result
== PACKET_OK
)
10658 unpack_varlen_hex (rs
->buf
, &result
);
10660 *addr
= (CORE_ADDR
) result
;
10663 else if (result
== PACKET_UNKNOWN
)
10664 error (_("Remote target doesn't support qGetTIBAddr packet"));
10666 error (_("Remote target failed to process qGetTIBAddr request"));
10669 error (_("qGetTIBAddr not supported or disabled on this target"));
10674 /* Support for inferring a target description based on the current
10675 architecture and the size of a 'g' packet. While the 'g' packet
10676 can have any size (since optional registers can be left off the
10677 end), some sizes are easily recognizable given knowledge of the
10678 approximate architecture. */
10680 struct remote_g_packet_guess
10683 const struct target_desc
*tdesc
;
10685 typedef struct remote_g_packet_guess remote_g_packet_guess_s
;
10686 DEF_VEC_O(remote_g_packet_guess_s
);
10688 struct remote_g_packet_data
10690 VEC(remote_g_packet_guess_s
) *guesses
;
10693 static struct gdbarch_data
*remote_g_packet_data_handle
;
10696 remote_g_packet_data_init (struct obstack
*obstack
)
10698 return OBSTACK_ZALLOC (obstack
, struct remote_g_packet_data
);
10702 register_remote_g_packet_guess (struct gdbarch
*gdbarch
, int bytes
,
10703 const struct target_desc
*tdesc
)
10705 struct remote_g_packet_data
*data
10706 = ((struct remote_g_packet_data
*)
10707 gdbarch_data (gdbarch
, remote_g_packet_data_handle
));
10708 struct remote_g_packet_guess new_guess
, *guess
;
10711 gdb_assert (tdesc
!= NULL
);
10714 VEC_iterate (remote_g_packet_guess_s
, data
->guesses
, ix
, guess
);
10716 if (guess
->bytes
== bytes
)
10717 internal_error (__FILE__
, __LINE__
,
10718 _("Duplicate g packet description added for size %d"),
10721 new_guess
.bytes
= bytes
;
10722 new_guess
.tdesc
= tdesc
;
10723 VEC_safe_push (remote_g_packet_guess_s
, data
->guesses
, &new_guess
);
10726 /* Return 1 if remote_read_description would do anything on this target
10727 and architecture, 0 otherwise. */
10730 remote_read_description_p (struct target_ops
*target
)
10732 struct remote_g_packet_data
*data
10733 = ((struct remote_g_packet_data
*)
10734 gdbarch_data (target_gdbarch (), remote_g_packet_data_handle
));
10736 if (!VEC_empty (remote_g_packet_guess_s
, data
->guesses
))
10742 static const struct target_desc
*
10743 remote_read_description (struct target_ops
*target
)
10745 struct remote_g_packet_data
*data
10746 = ((struct remote_g_packet_data
*)
10747 gdbarch_data (target_gdbarch (), remote_g_packet_data_handle
));
10749 /* Do not try this during initial connection, when we do not know
10750 whether there is a running but stopped thread. */
10751 if (!target_has_execution
|| ptid_equal (inferior_ptid
, null_ptid
))
10752 return target
->beneath
->to_read_description (target
->beneath
);
10754 if (!VEC_empty (remote_g_packet_guess_s
, data
->guesses
))
10756 struct remote_g_packet_guess
*guess
;
10758 int bytes
= send_g_packet ();
10761 VEC_iterate (remote_g_packet_guess_s
, data
->guesses
, ix
, guess
);
10763 if (guess
->bytes
== bytes
)
10764 return guess
->tdesc
;
10766 /* We discard the g packet. A minor optimization would be to
10767 hold on to it, and fill the register cache once we have selected
10768 an architecture, but it's too tricky to do safely. */
10771 return target
->beneath
->to_read_description (target
->beneath
);
10774 /* Remote file transfer support. This is host-initiated I/O, not
10775 target-initiated; for target-initiated, see remote-fileio.c. */
10777 /* If *LEFT is at least the length of STRING, copy STRING to
10778 *BUFFER, update *BUFFER to point to the new end of the buffer, and
10779 decrease *LEFT. Otherwise raise an error. */
10782 remote_buffer_add_string (char **buffer
, int *left
, char *string
)
10784 int len
= strlen (string
);
10787 error (_("Packet too long for target."));
10789 memcpy (*buffer
, string
, len
);
10793 /* NUL-terminate the buffer as a convenience, if there is
10799 /* If *LEFT is large enough, hex encode LEN bytes from BYTES into
10800 *BUFFER, update *BUFFER to point to the new end of the buffer, and
10801 decrease *LEFT. Otherwise raise an error. */
10804 remote_buffer_add_bytes (char **buffer
, int *left
, const gdb_byte
*bytes
,
10807 if (2 * len
> *left
)
10808 error (_("Packet too long for target."));
10810 bin2hex (bytes
, *buffer
, len
);
10811 *buffer
+= 2 * len
;
10814 /* NUL-terminate the buffer as a convenience, if there is
10820 /* If *LEFT is large enough, convert VALUE to hex and add it to
10821 *BUFFER, update *BUFFER to point to the new end of the buffer, and
10822 decrease *LEFT. Otherwise raise an error. */
10825 remote_buffer_add_int (char **buffer
, int *left
, ULONGEST value
)
10827 int len
= hexnumlen (value
);
10830 error (_("Packet too long for target."));
10832 hexnumstr (*buffer
, value
);
10836 /* NUL-terminate the buffer as a convenience, if there is
10842 /* Parse an I/O result packet from BUFFER. Set RETCODE to the return
10843 value, *REMOTE_ERRNO to the remote error number or zero if none
10844 was included, and *ATTACHMENT to point to the start of the annex
10845 if any. The length of the packet isn't needed here; there may
10846 be NUL bytes in BUFFER, but they will be after *ATTACHMENT.
10848 Return 0 if the packet could be parsed, -1 if it could not. If
10849 -1 is returned, the other variables may not be initialized. */
10852 remote_hostio_parse_result (char *buffer
, int *retcode
,
10853 int *remote_errno
, char **attachment
)
10858 *attachment
= NULL
;
10860 if (buffer
[0] != 'F')
10864 *retcode
= strtol (&buffer
[1], &p
, 16);
10865 if (errno
!= 0 || p
== &buffer
[1])
10868 /* Check for ",errno". */
10872 *remote_errno
= strtol (p
+ 1, &p2
, 16);
10873 if (errno
!= 0 || p
+ 1 == p2
)
10878 /* Check for ";attachment". If there is no attachment, the
10879 packet should end here. */
10882 *attachment
= p
+ 1;
10885 else if (*p
== '\0')
10891 /* Send a prepared I/O packet to the target and read its response.
10892 The prepared packet is in the global RS->BUF before this function
10893 is called, and the answer is there when we return.
10895 COMMAND_BYTES is the length of the request to send, which may include
10896 binary data. WHICH_PACKET is the packet configuration to check
10897 before attempting a packet. If an error occurs, *REMOTE_ERRNO
10898 is set to the error number and -1 is returned. Otherwise the value
10899 returned by the function is returned.
10901 ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an
10902 attachment is expected; an error will be reported if there's a
10903 mismatch. If one is found, *ATTACHMENT will be set to point into
10904 the packet buffer and *ATTACHMENT_LEN will be set to the
10905 attachment's length. */
10908 remote_hostio_send_command (int command_bytes
, int which_packet
,
10909 int *remote_errno
, char **attachment
,
10910 int *attachment_len
)
10912 struct remote_state
*rs
= get_remote_state ();
10913 int ret
, bytes_read
;
10914 char *attachment_tmp
;
10916 if (!rs
->remote_desc
10917 || packet_support (which_packet
) == PACKET_DISABLE
)
10919 *remote_errno
= FILEIO_ENOSYS
;
10923 putpkt_binary (rs
->buf
, command_bytes
);
10924 bytes_read
= getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0);
10926 /* If it timed out, something is wrong. Don't try to parse the
10928 if (bytes_read
< 0)
10930 *remote_errno
= FILEIO_EINVAL
;
10934 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[which_packet
]))
10937 *remote_errno
= FILEIO_EINVAL
;
10939 case PACKET_UNKNOWN
:
10940 *remote_errno
= FILEIO_ENOSYS
;
10946 if (remote_hostio_parse_result (rs
->buf
, &ret
, remote_errno
,
10949 *remote_errno
= FILEIO_EINVAL
;
10953 /* Make sure we saw an attachment if and only if we expected one. */
10954 if ((attachment_tmp
== NULL
&& attachment
!= NULL
)
10955 || (attachment_tmp
!= NULL
&& attachment
== NULL
))
10957 *remote_errno
= FILEIO_EINVAL
;
10961 /* If an attachment was found, it must point into the packet buffer;
10962 work out how many bytes there were. */
10963 if (attachment_tmp
!= NULL
)
10965 *attachment
= attachment_tmp
;
10966 *attachment_len
= bytes_read
- (*attachment
- rs
->buf
);
10972 /* Invalidate the readahead cache. */
10975 readahead_cache_invalidate (void)
10977 struct remote_state
*rs
= get_remote_state ();
10979 rs
->readahead_cache
.fd
= -1;
10982 /* Invalidate the readahead cache if it is holding data for FD. */
10985 readahead_cache_invalidate_fd (int fd
)
10987 struct remote_state
*rs
= get_remote_state ();
10989 if (rs
->readahead_cache
.fd
== fd
)
10990 rs
->readahead_cache
.fd
= -1;
10993 /* Set the filesystem remote_hostio functions that take FILENAME
10994 arguments will use. Return 0 on success, or -1 if an error
10995 occurs (and set *REMOTE_ERRNO). */
10998 remote_hostio_set_filesystem (struct inferior
*inf
, int *remote_errno
)
11000 struct remote_state
*rs
= get_remote_state ();
11001 int required_pid
= (inf
== NULL
|| inf
->fake_pid_p
) ? 0 : inf
->pid
;
11003 int left
= get_remote_packet_size () - 1;
11007 if (packet_support (PACKET_vFile_setfs
) == PACKET_DISABLE
)
11010 if (rs
->fs_pid
!= -1 && required_pid
== rs
->fs_pid
)
11013 remote_buffer_add_string (&p
, &left
, "vFile:setfs:");
11015 xsnprintf (arg
, sizeof (arg
), "%x", required_pid
);
11016 remote_buffer_add_string (&p
, &left
, arg
);
11018 ret
= remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_setfs
,
11019 remote_errno
, NULL
, NULL
);
11021 if (packet_support (PACKET_vFile_setfs
) == PACKET_DISABLE
)
11025 rs
->fs_pid
= required_pid
;
11030 /* Implementation of to_fileio_open. */
11033 remote_hostio_open (struct target_ops
*self
,
11034 struct inferior
*inf
, const char *filename
,
11035 int flags
, int mode
, int warn_if_slow
,
11038 struct remote_state
*rs
= get_remote_state ();
11040 int left
= get_remote_packet_size () - 1;
11044 static int warning_issued
= 0;
11046 printf_unfiltered (_("Reading %s from remote target...\n"),
11049 if (!warning_issued
)
11051 warning (_("File transfers from remote targets can be slow."
11052 " Use \"set sysroot\" to access files locally"
11054 warning_issued
= 1;
11058 if (remote_hostio_set_filesystem (inf
, remote_errno
) != 0)
11061 remote_buffer_add_string (&p
, &left
, "vFile:open:");
11063 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
11064 strlen (filename
));
11065 remote_buffer_add_string (&p
, &left
, ",");
11067 remote_buffer_add_int (&p
, &left
, flags
);
11068 remote_buffer_add_string (&p
, &left
, ",");
11070 remote_buffer_add_int (&p
, &left
, mode
);
11072 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_open
,
11073 remote_errno
, NULL
, NULL
);
11076 /* Implementation of to_fileio_pwrite. */
11079 remote_hostio_pwrite (struct target_ops
*self
,
11080 int fd
, const gdb_byte
*write_buf
, int len
,
11081 ULONGEST offset
, int *remote_errno
)
11083 struct remote_state
*rs
= get_remote_state ();
11085 int left
= get_remote_packet_size ();
11088 readahead_cache_invalidate_fd (fd
);
11090 remote_buffer_add_string (&p
, &left
, "vFile:pwrite:");
11092 remote_buffer_add_int (&p
, &left
, fd
);
11093 remote_buffer_add_string (&p
, &left
, ",");
11095 remote_buffer_add_int (&p
, &left
, offset
);
11096 remote_buffer_add_string (&p
, &left
, ",");
11098 p
+= remote_escape_output (write_buf
, len
, 1, (gdb_byte
*) p
, &out_len
,
11099 get_remote_packet_size () - (p
- rs
->buf
));
11101 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_pwrite
,
11102 remote_errno
, NULL
, NULL
);
11105 /* Helper for the implementation of to_fileio_pread. Read the file
11106 from the remote side with vFile:pread. */
11109 remote_hostio_pread_vFile (struct target_ops
*self
,
11110 int fd
, gdb_byte
*read_buf
, int len
,
11111 ULONGEST offset
, int *remote_errno
)
11113 struct remote_state
*rs
= get_remote_state ();
11116 int left
= get_remote_packet_size ();
11117 int ret
, attachment_len
;
11120 remote_buffer_add_string (&p
, &left
, "vFile:pread:");
11122 remote_buffer_add_int (&p
, &left
, fd
);
11123 remote_buffer_add_string (&p
, &left
, ",");
11125 remote_buffer_add_int (&p
, &left
, len
);
11126 remote_buffer_add_string (&p
, &left
, ",");
11128 remote_buffer_add_int (&p
, &left
, offset
);
11130 ret
= remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_pread
,
11131 remote_errno
, &attachment
,
11137 read_len
= remote_unescape_input ((gdb_byte
*) attachment
, attachment_len
,
11139 if (read_len
!= ret
)
11140 error (_("Read returned %d, but %d bytes."), ret
, (int) read_len
);
11145 /* Serve pread from the readahead cache. Returns number of bytes
11146 read, or 0 if the request can't be served from the cache. */
11149 remote_hostio_pread_from_cache (struct remote_state
*rs
,
11150 int fd
, gdb_byte
*read_buf
, size_t len
,
11153 struct readahead_cache
*cache
= &rs
->readahead_cache
;
11155 if (cache
->fd
== fd
11156 && cache
->offset
<= offset
11157 && offset
< cache
->offset
+ cache
->bufsize
)
11159 ULONGEST max
= cache
->offset
+ cache
->bufsize
;
11161 if (offset
+ len
> max
)
11162 len
= max
- offset
;
11164 memcpy (read_buf
, cache
->buf
+ offset
- cache
->offset
, len
);
11171 /* Implementation of to_fileio_pread. */
11174 remote_hostio_pread (struct target_ops
*self
,
11175 int fd
, gdb_byte
*read_buf
, int len
,
11176 ULONGEST offset
, int *remote_errno
)
11179 struct remote_state
*rs
= get_remote_state ();
11180 struct readahead_cache
*cache
= &rs
->readahead_cache
;
11182 ret
= remote_hostio_pread_from_cache (rs
, fd
, read_buf
, len
, offset
);
11185 cache
->hit_count
++;
11188 fprintf_unfiltered (gdb_stdlog
, "readahead cache hit %s\n",
11189 pulongest (cache
->hit_count
));
11193 cache
->miss_count
++;
11195 fprintf_unfiltered (gdb_stdlog
, "readahead cache miss %s\n",
11196 pulongest (cache
->miss_count
));
11199 cache
->offset
= offset
;
11200 cache
->bufsize
= get_remote_packet_size ();
11201 cache
->buf
= (gdb_byte
*) xrealloc (cache
->buf
, cache
->bufsize
);
11203 ret
= remote_hostio_pread_vFile (self
, cache
->fd
, cache
->buf
, cache
->bufsize
,
11204 cache
->offset
, remote_errno
);
11207 readahead_cache_invalidate_fd (fd
);
11211 cache
->bufsize
= ret
;
11212 return remote_hostio_pread_from_cache (rs
, fd
, read_buf
, len
, offset
);
11215 /* Implementation of to_fileio_close. */
11218 remote_hostio_close (struct target_ops
*self
, int fd
, int *remote_errno
)
11220 struct remote_state
*rs
= get_remote_state ();
11222 int left
= get_remote_packet_size () - 1;
11224 readahead_cache_invalidate_fd (fd
);
11226 remote_buffer_add_string (&p
, &left
, "vFile:close:");
11228 remote_buffer_add_int (&p
, &left
, fd
);
11230 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_close
,
11231 remote_errno
, NULL
, NULL
);
11234 /* Implementation of to_fileio_unlink. */
11237 remote_hostio_unlink (struct target_ops
*self
,
11238 struct inferior
*inf
, const char *filename
,
11241 struct remote_state
*rs
= get_remote_state ();
11243 int left
= get_remote_packet_size () - 1;
11245 if (remote_hostio_set_filesystem (inf
, remote_errno
) != 0)
11248 remote_buffer_add_string (&p
, &left
, "vFile:unlink:");
11250 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
11251 strlen (filename
));
11253 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_unlink
,
11254 remote_errno
, NULL
, NULL
);
11257 /* Implementation of to_fileio_readlink. */
11260 remote_hostio_readlink (struct target_ops
*self
,
11261 struct inferior
*inf
, const char *filename
,
11264 struct remote_state
*rs
= get_remote_state ();
11267 int left
= get_remote_packet_size ();
11268 int len
, attachment_len
;
11272 if (remote_hostio_set_filesystem (inf
, remote_errno
) != 0)
11275 remote_buffer_add_string (&p
, &left
, "vFile:readlink:");
11277 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
11278 strlen (filename
));
11280 len
= remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_readlink
,
11281 remote_errno
, &attachment
,
11287 ret
= (char *) xmalloc (len
+ 1);
11289 read_len
= remote_unescape_input ((gdb_byte
*) attachment
, attachment_len
,
11290 (gdb_byte
*) ret
, len
);
11291 if (read_len
!= len
)
11292 error (_("Readlink returned %d, but %d bytes."), len
, read_len
);
11298 /* Implementation of to_fileio_fstat. */
11301 remote_hostio_fstat (struct target_ops
*self
,
11302 int fd
, struct stat
*st
,
11305 struct remote_state
*rs
= get_remote_state ();
11307 int left
= get_remote_packet_size ();
11308 int attachment_len
, ret
;
11310 struct fio_stat fst
;
11313 remote_buffer_add_string (&p
, &left
, "vFile:fstat:");
11315 remote_buffer_add_int (&p
, &left
, fd
);
11317 ret
= remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_fstat
,
11318 remote_errno
, &attachment
,
11322 if (*remote_errno
!= FILEIO_ENOSYS
)
11325 /* Strictly we should return -1, ENOSYS here, but when
11326 "set sysroot remote:" was implemented in August 2008
11327 BFD's need for a stat function was sidestepped with
11328 this hack. This was not remedied until March 2015
11329 so we retain the previous behavior to avoid breaking
11332 Note that the memset is a March 2015 addition; older
11333 GDBs set st_size *and nothing else* so the structure
11334 would have garbage in all other fields. This might
11335 break something but retaining the previous behavior
11336 here would be just too wrong. */
11338 memset (st
, 0, sizeof (struct stat
));
11339 st
->st_size
= INT_MAX
;
11343 read_len
= remote_unescape_input ((gdb_byte
*) attachment
, attachment_len
,
11344 (gdb_byte
*) &fst
, sizeof (fst
));
11346 if (read_len
!= ret
)
11347 error (_("vFile:fstat returned %d, but %d bytes."), ret
, read_len
);
11349 if (read_len
!= sizeof (fst
))
11350 error (_("vFile:fstat returned %d bytes, but expecting %d."),
11351 read_len
, (int) sizeof (fst
));
11353 remote_fileio_to_host_stat (&fst
, st
);
11358 /* Implementation of to_filesystem_is_local. */
11361 remote_filesystem_is_local (struct target_ops
*self
)
11363 /* Valgrind GDB presents itself as a remote target but works
11364 on the local filesystem: it does not implement remote get
11365 and users are not expected to set a sysroot. To handle
11366 this case we treat the remote filesystem as local if the
11367 sysroot is exactly TARGET_SYSROOT_PREFIX and if the stub
11368 does not support vFile:open. */
11369 if (strcmp (gdb_sysroot
, TARGET_SYSROOT_PREFIX
) == 0)
11371 enum packet_support ps
= packet_support (PACKET_vFile_open
);
11373 if (ps
== PACKET_SUPPORT_UNKNOWN
)
11375 int fd
, remote_errno
;
11377 /* Try opening a file to probe support. The supplied
11378 filename is irrelevant, we only care about whether
11379 the stub recognizes the packet or not. */
11380 fd
= remote_hostio_open (self
, NULL
, "just probing",
11381 FILEIO_O_RDONLY
, 0700, 0,
11385 remote_hostio_close (self
, fd
, &remote_errno
);
11387 ps
= packet_support (PACKET_vFile_open
);
11390 if (ps
== PACKET_DISABLE
)
11392 static int warning_issued
= 0;
11394 if (!warning_issued
)
11396 warning (_("remote target does not support file"
11397 " transfer, attempting to access files"
11398 " from local filesystem."));
11399 warning_issued
= 1;
11410 remote_fileio_errno_to_host (int errnum
)
11416 case FILEIO_ENOENT
:
11424 case FILEIO_EACCES
:
11426 case FILEIO_EFAULT
:
11430 case FILEIO_EEXIST
:
11432 case FILEIO_ENODEV
:
11434 case FILEIO_ENOTDIR
:
11436 case FILEIO_EISDIR
:
11438 case FILEIO_EINVAL
:
11440 case FILEIO_ENFILE
:
11442 case FILEIO_EMFILE
:
11446 case FILEIO_ENOSPC
:
11448 case FILEIO_ESPIPE
:
11452 case FILEIO_ENOSYS
:
11454 case FILEIO_ENAMETOOLONG
:
11455 return ENAMETOOLONG
;
11461 remote_hostio_error (int errnum
)
11463 int host_error
= remote_fileio_errno_to_host (errnum
);
11465 if (host_error
== -1)
11466 error (_("Unknown remote I/O error %d"), errnum
);
11468 error (_("Remote I/O error: %s"), safe_strerror (host_error
));
11472 remote_hostio_close_cleanup (void *opaque
)
11474 int fd
= *(int *) opaque
;
11477 remote_hostio_close (find_target_at (process_stratum
), fd
, &remote_errno
);
11481 remote_file_put (const char *local_file
, const char *remote_file
, int from_tty
)
11483 struct cleanup
*back_to
, *close_cleanup
;
11484 int retcode
, fd
, remote_errno
, bytes
, io_size
;
11487 int bytes_in_buffer
;
11490 struct remote_state
*rs
= get_remote_state ();
11492 if (!rs
->remote_desc
)
11493 error (_("command can only be used with remote target"));
11495 file
= gdb_fopen_cloexec (local_file
, "rb");
11497 perror_with_name (local_file
);
11498 back_to
= make_cleanup_fclose (file
);
11500 fd
= remote_hostio_open (find_target_at (process_stratum
), NULL
,
11501 remote_file
, (FILEIO_O_WRONLY
| FILEIO_O_CREAT
11503 0700, 0, &remote_errno
);
11505 remote_hostio_error (remote_errno
);
11507 /* Send up to this many bytes at once. They won't all fit in the
11508 remote packet limit, so we'll transfer slightly fewer. */
11509 io_size
= get_remote_packet_size ();
11510 buffer
= (gdb_byte
*) xmalloc (io_size
);
11511 make_cleanup (xfree
, buffer
);
11513 close_cleanup
= make_cleanup (remote_hostio_close_cleanup
, &fd
);
11515 bytes_in_buffer
= 0;
11518 while (bytes_in_buffer
|| !saw_eof
)
11522 bytes
= fread (buffer
+ bytes_in_buffer
, 1,
11523 io_size
- bytes_in_buffer
,
11528 error (_("Error reading %s."), local_file
);
11531 /* EOF. Unless there is something still in the
11532 buffer from the last iteration, we are done. */
11534 if (bytes_in_buffer
== 0)
11542 bytes
+= bytes_in_buffer
;
11543 bytes_in_buffer
= 0;
11545 retcode
= remote_hostio_pwrite (find_target_at (process_stratum
),
11547 offset
, &remote_errno
);
11550 remote_hostio_error (remote_errno
);
11551 else if (retcode
== 0)
11552 error (_("Remote write of %d bytes returned 0!"), bytes
);
11553 else if (retcode
< bytes
)
11555 /* Short write. Save the rest of the read data for the next
11557 bytes_in_buffer
= bytes
- retcode
;
11558 memmove (buffer
, buffer
+ retcode
, bytes_in_buffer
);
11564 discard_cleanups (close_cleanup
);
11565 if (remote_hostio_close (find_target_at (process_stratum
), fd
, &remote_errno
))
11566 remote_hostio_error (remote_errno
);
11569 printf_filtered (_("Successfully sent file \"%s\".\n"), local_file
);
11570 do_cleanups (back_to
);
11574 remote_file_get (const char *remote_file
, const char *local_file
, int from_tty
)
11576 struct cleanup
*back_to
, *close_cleanup
;
11577 int fd
, remote_errno
, bytes
, io_size
;
11581 struct remote_state
*rs
= get_remote_state ();
11583 if (!rs
->remote_desc
)
11584 error (_("command can only be used with remote target"));
11586 fd
= remote_hostio_open (find_target_at (process_stratum
), NULL
,
11587 remote_file
, FILEIO_O_RDONLY
, 0, 0,
11590 remote_hostio_error (remote_errno
);
11592 file
= gdb_fopen_cloexec (local_file
, "wb");
11594 perror_with_name (local_file
);
11595 back_to
= make_cleanup_fclose (file
);
11597 /* Send up to this many bytes at once. They won't all fit in the
11598 remote packet limit, so we'll transfer slightly fewer. */
11599 io_size
= get_remote_packet_size ();
11600 buffer
= (gdb_byte
*) xmalloc (io_size
);
11601 make_cleanup (xfree
, buffer
);
11603 close_cleanup
= make_cleanup (remote_hostio_close_cleanup
, &fd
);
11608 bytes
= remote_hostio_pread (find_target_at (process_stratum
),
11609 fd
, buffer
, io_size
, offset
, &remote_errno
);
11611 /* Success, but no bytes, means end-of-file. */
11614 remote_hostio_error (remote_errno
);
11618 bytes
= fwrite (buffer
, 1, bytes
, file
);
11620 perror_with_name (local_file
);
11623 discard_cleanups (close_cleanup
);
11624 if (remote_hostio_close (find_target_at (process_stratum
), fd
, &remote_errno
))
11625 remote_hostio_error (remote_errno
);
11628 printf_filtered (_("Successfully fetched file \"%s\".\n"), remote_file
);
11629 do_cleanups (back_to
);
11633 remote_file_delete (const char *remote_file
, int from_tty
)
11635 int retcode
, remote_errno
;
11636 struct remote_state
*rs
= get_remote_state ();
11638 if (!rs
->remote_desc
)
11639 error (_("command can only be used with remote target"));
11641 retcode
= remote_hostio_unlink (find_target_at (process_stratum
),
11642 NULL
, remote_file
, &remote_errno
);
11644 remote_hostio_error (remote_errno
);
11647 printf_filtered (_("Successfully deleted file \"%s\".\n"), remote_file
);
11651 remote_put_command (char *args
, int from_tty
)
11653 struct cleanup
*back_to
;
11657 error_no_arg (_("file to put"));
11659 argv
= gdb_buildargv (args
);
11660 back_to
= make_cleanup_freeargv (argv
);
11661 if (argv
[0] == NULL
|| argv
[1] == NULL
|| argv
[2] != NULL
)
11662 error (_("Invalid parameters to remote put"));
11664 remote_file_put (argv
[0], argv
[1], from_tty
);
11666 do_cleanups (back_to
);
11670 remote_get_command (char *args
, int from_tty
)
11672 struct cleanup
*back_to
;
11676 error_no_arg (_("file to get"));
11678 argv
= gdb_buildargv (args
);
11679 back_to
= make_cleanup_freeargv (argv
);
11680 if (argv
[0] == NULL
|| argv
[1] == NULL
|| argv
[2] != NULL
)
11681 error (_("Invalid parameters to remote get"));
11683 remote_file_get (argv
[0], argv
[1], from_tty
);
11685 do_cleanups (back_to
);
11689 remote_delete_command (char *args
, int from_tty
)
11691 struct cleanup
*back_to
;
11695 error_no_arg (_("file to delete"));
11697 argv
= gdb_buildargv (args
);
11698 back_to
= make_cleanup_freeargv (argv
);
11699 if (argv
[0] == NULL
|| argv
[1] != NULL
)
11700 error (_("Invalid parameters to remote delete"));
11702 remote_file_delete (argv
[0], from_tty
);
11704 do_cleanups (back_to
);
11708 remote_command (char *args
, int from_tty
)
11710 help_list (remote_cmdlist
, "remote ", all_commands
, gdb_stdout
);
11714 remote_can_execute_reverse (struct target_ops
*self
)
11716 if (packet_support (PACKET_bs
) == PACKET_ENABLE
11717 || packet_support (PACKET_bc
) == PACKET_ENABLE
)
11724 remote_supports_non_stop (struct target_ops
*self
)
11730 remote_supports_disable_randomization (struct target_ops
*self
)
11732 /* Only supported in extended mode. */
11737 remote_supports_multi_process (struct target_ops
*self
)
11739 struct remote_state
*rs
= get_remote_state ();
11741 return remote_multi_process_p (rs
);
11745 remote_supports_cond_tracepoints (void)
11747 return packet_support (PACKET_ConditionalTracepoints
) == PACKET_ENABLE
;
11751 remote_supports_cond_breakpoints (struct target_ops
*self
)
11753 return packet_support (PACKET_ConditionalBreakpoints
) == PACKET_ENABLE
;
11757 remote_supports_fast_tracepoints (void)
11759 return packet_support (PACKET_FastTracepoints
) == PACKET_ENABLE
;
11763 remote_supports_static_tracepoints (void)
11765 return packet_support (PACKET_StaticTracepoints
) == PACKET_ENABLE
;
11769 remote_supports_install_in_trace (void)
11771 return packet_support (PACKET_InstallInTrace
) == PACKET_ENABLE
;
11775 remote_supports_enable_disable_tracepoint (struct target_ops
*self
)
11777 return (packet_support (PACKET_EnableDisableTracepoints_feature
)
11782 remote_supports_string_tracing (struct target_ops
*self
)
11784 return packet_support (PACKET_tracenz_feature
) == PACKET_ENABLE
;
11788 remote_can_run_breakpoint_commands (struct target_ops
*self
)
11790 return packet_support (PACKET_BreakpointCommands
) == PACKET_ENABLE
;
11794 remote_trace_init (struct target_ops
*self
)
11797 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11798 if (strcmp (target_buf
, "OK") != 0)
11799 error (_("Target does not support this command."));
11802 static void free_actions_list (char **actions_list
);
11803 static void free_actions_list_cleanup_wrapper (void *);
11805 free_actions_list_cleanup_wrapper (void *al
)
11807 free_actions_list ((char **) al
);
11811 free_actions_list (char **actions_list
)
11815 if (actions_list
== 0)
11818 for (ndx
= 0; actions_list
[ndx
]; ndx
++)
11819 xfree (actions_list
[ndx
]);
11821 xfree (actions_list
);
11824 /* Recursive routine to walk through command list including loops, and
11825 download packets for each command. */
11828 remote_download_command_source (int num
, ULONGEST addr
,
11829 struct command_line
*cmds
)
11831 struct remote_state
*rs
= get_remote_state ();
11832 struct command_line
*cmd
;
11834 for (cmd
= cmds
; cmd
; cmd
= cmd
->next
)
11836 QUIT
; /* Allow user to bail out with ^C. */
11837 strcpy (rs
->buf
, "QTDPsrc:");
11838 encode_source_string (num
, addr
, "cmd", cmd
->line
,
11839 rs
->buf
+ strlen (rs
->buf
),
11840 rs
->buf_size
- strlen (rs
->buf
));
11842 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11843 if (strcmp (target_buf
, "OK"))
11844 warning (_("Target does not support source download."));
11846 if (cmd
->control_type
== while_control
11847 || cmd
->control_type
== while_stepping_control
)
11849 remote_download_command_source (num
, addr
, *cmd
->body_list
);
11851 QUIT
; /* Allow user to bail out with ^C. */
11852 strcpy (rs
->buf
, "QTDPsrc:");
11853 encode_source_string (num
, addr
, "cmd", "end",
11854 rs
->buf
+ strlen (rs
->buf
),
11855 rs
->buf_size
- strlen (rs
->buf
));
11857 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11858 if (strcmp (target_buf
, "OK"))
11859 warning (_("Target does not support source download."));
11865 remote_download_tracepoint (struct target_ops
*self
, struct bp_location
*loc
)
11867 #define BUF_SIZE 2048
11871 char buf
[BUF_SIZE
];
11872 char **tdp_actions
;
11873 char **stepping_actions
;
11875 struct cleanup
*old_chain
= NULL
;
11876 struct agent_expr
*aexpr
;
11877 struct cleanup
*aexpr_chain
= NULL
;
11879 struct breakpoint
*b
= loc
->owner
;
11880 struct tracepoint
*t
= (struct tracepoint
*) b
;
11882 encode_actions_rsp (loc
, &tdp_actions
, &stepping_actions
);
11883 old_chain
= make_cleanup (free_actions_list_cleanup_wrapper
,
11885 (void) make_cleanup (free_actions_list_cleanup_wrapper
,
11888 tpaddr
= loc
->address
;
11889 sprintf_vma (addrbuf
, tpaddr
);
11890 xsnprintf (buf
, BUF_SIZE
, "QTDP:%x:%s:%c:%lx:%x", b
->number
,
11891 addrbuf
, /* address */
11892 (b
->enable_state
== bp_enabled
? 'E' : 'D'),
11893 t
->step_count
, t
->pass_count
);
11894 /* Fast tracepoints are mostly handled by the target, but we can
11895 tell the target how big of an instruction block should be moved
11897 if (b
->type
== bp_fast_tracepoint
)
11899 /* Only test for support at download time; we may not know
11900 target capabilities at definition time. */
11901 if (remote_supports_fast_tracepoints ())
11903 if (gdbarch_fast_tracepoint_valid_at (loc
->gdbarch
, tpaddr
,
11905 xsnprintf (buf
+ strlen (buf
), BUF_SIZE
- strlen (buf
), ":F%x",
11906 gdb_insn_length (loc
->gdbarch
, tpaddr
));
11908 /* If it passed validation at definition but fails now,
11909 something is very wrong. */
11910 internal_error (__FILE__
, __LINE__
,
11911 _("Fast tracepoint not "
11912 "valid during download"));
11915 /* Fast tracepoints are functionally identical to regular
11916 tracepoints, so don't take lack of support as a reason to
11917 give up on the trace run. */
11918 warning (_("Target does not support fast tracepoints, "
11919 "downloading %d as regular tracepoint"), b
->number
);
11921 else if (b
->type
== bp_static_tracepoint
)
11923 /* Only test for support at download time; we may not know
11924 target capabilities at definition time. */
11925 if (remote_supports_static_tracepoints ())
11927 struct static_tracepoint_marker marker
;
11929 if (target_static_tracepoint_marker_at (tpaddr
, &marker
))
11930 strcat (buf
, ":S");
11932 error (_("Static tracepoint not valid during download"));
11935 /* Fast tracepoints are functionally identical to regular
11936 tracepoints, so don't take lack of support as a reason
11937 to give up on the trace run. */
11938 error (_("Target does not support static tracepoints"));
11940 /* If the tracepoint has a conditional, make it into an agent
11941 expression and append to the definition. */
11944 /* Only test support at download time, we may not know target
11945 capabilities at definition time. */
11946 if (remote_supports_cond_tracepoints ())
11948 aexpr
= gen_eval_for_expr (tpaddr
, loc
->cond
);
11949 aexpr_chain
= make_cleanup_free_agent_expr (aexpr
);
11950 xsnprintf (buf
+ strlen (buf
), BUF_SIZE
- strlen (buf
), ":X%x,",
11952 pkt
= buf
+ strlen (buf
);
11953 for (ndx
= 0; ndx
< aexpr
->len
; ++ndx
)
11954 pkt
= pack_hex_byte (pkt
, aexpr
->buf
[ndx
]);
11956 do_cleanups (aexpr_chain
);
11959 warning (_("Target does not support conditional tracepoints, "
11960 "ignoring tp %d cond"), b
->number
);
11963 if (b
->commands
|| *default_collect
)
11966 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11967 if (strcmp (target_buf
, "OK"))
11968 error (_("Target does not support tracepoints."));
11970 /* do_single_steps (t); */
11973 for (ndx
= 0; tdp_actions
[ndx
]; ndx
++)
11975 QUIT
; /* Allow user to bail out with ^C. */
11976 xsnprintf (buf
, BUF_SIZE
, "QTDP:-%x:%s:%s%c",
11977 b
->number
, addrbuf
, /* address */
11979 ((tdp_actions
[ndx
+ 1] || stepping_actions
)
11982 remote_get_noisy_reply (&target_buf
,
11984 if (strcmp (target_buf
, "OK"))
11985 error (_("Error on target while setting tracepoints."));
11988 if (stepping_actions
)
11990 for (ndx
= 0; stepping_actions
[ndx
]; ndx
++)
11992 QUIT
; /* Allow user to bail out with ^C. */
11993 xsnprintf (buf
, BUF_SIZE
, "QTDP:-%x:%s:%s%s%s",
11994 b
->number
, addrbuf
, /* address */
11995 ((ndx
== 0) ? "S" : ""),
11996 stepping_actions
[ndx
],
11997 (stepping_actions
[ndx
+ 1] ? "-" : ""));
11999 remote_get_noisy_reply (&target_buf
,
12001 if (strcmp (target_buf
, "OK"))
12002 error (_("Error on target while setting tracepoints."));
12006 if (packet_support (PACKET_TracepointSource
) == PACKET_ENABLE
)
12008 if (b
->location
!= NULL
)
12010 strcpy (buf
, "QTDPsrc:");
12011 encode_source_string (b
->number
, loc
->address
, "at",
12012 event_location_to_string (b
->location
),
12013 buf
+ strlen (buf
), 2048 - strlen (buf
));
12015 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
12016 if (strcmp (target_buf
, "OK"))
12017 warning (_("Target does not support source download."));
12019 if (b
->cond_string
)
12021 strcpy (buf
, "QTDPsrc:");
12022 encode_source_string (b
->number
, loc
->address
,
12023 "cond", b
->cond_string
, buf
+ strlen (buf
),
12024 2048 - strlen (buf
));
12026 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
12027 if (strcmp (target_buf
, "OK"))
12028 warning (_("Target does not support source download."));
12030 remote_download_command_source (b
->number
, loc
->address
,
12031 breakpoint_commands (b
));
12034 do_cleanups (old_chain
);
12038 remote_can_download_tracepoint (struct target_ops
*self
)
12040 struct remote_state
*rs
= get_remote_state ();
12041 struct trace_status
*ts
;
12044 /* Don't try to install tracepoints until we've relocated our
12045 symbols, and fetched and merged the target's tracepoint list with
12047 if (rs
->starting_up
)
12050 ts
= current_trace_status ();
12051 status
= remote_get_trace_status (self
, ts
);
12053 if (status
== -1 || !ts
->running_known
|| !ts
->running
)
12056 /* If we are in a tracing experiment, but remote stub doesn't support
12057 installing tracepoint in trace, we have to return. */
12058 if (!remote_supports_install_in_trace ())
12066 remote_download_trace_state_variable (struct target_ops
*self
,
12067 struct trace_state_variable
*tsv
)
12069 struct remote_state
*rs
= get_remote_state ();
12072 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTDV:%x:%s:%x:",
12073 tsv
->number
, phex ((ULONGEST
) tsv
->initial_value
, 8),
12075 p
= rs
->buf
+ strlen (rs
->buf
);
12076 if ((p
- rs
->buf
) + strlen (tsv
->name
) * 2 >= get_remote_packet_size ())
12077 error (_("Trace state variable name too long for tsv definition packet"));
12078 p
+= 2 * bin2hex ((gdb_byte
*) (tsv
->name
), p
, strlen (tsv
->name
));
12081 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
12082 if (*target_buf
== '\0')
12083 error (_("Target does not support this command."));
12084 if (strcmp (target_buf
, "OK") != 0)
12085 error (_("Error on target while downloading trace state variable."));
12089 remote_enable_tracepoint (struct target_ops
*self
,
12090 struct bp_location
*location
)
12092 struct remote_state
*rs
= get_remote_state ();
12095 sprintf_vma (addr_buf
, location
->address
);
12096 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTEnable:%x:%s",
12097 location
->owner
->number
, addr_buf
);
12099 remote_get_noisy_reply (&rs
->buf
, &rs
->buf_size
);
12100 if (*rs
->buf
== '\0')
12101 error (_("Target does not support enabling tracepoints while a trace run is ongoing."));
12102 if (strcmp (rs
->buf
, "OK") != 0)
12103 error (_("Error on target while enabling tracepoint."));
12107 remote_disable_tracepoint (struct target_ops
*self
,
12108 struct bp_location
*location
)
12110 struct remote_state
*rs
= get_remote_state ();
12113 sprintf_vma (addr_buf
, location
->address
);
12114 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTDisable:%x:%s",
12115 location
->owner
->number
, addr_buf
);
12117 remote_get_noisy_reply (&rs
->buf
, &rs
->buf_size
);
12118 if (*rs
->buf
== '\0')
12119 error (_("Target does not support disabling tracepoints while a trace run is ongoing."));
12120 if (strcmp (rs
->buf
, "OK") != 0)
12121 error (_("Error on target while disabling tracepoint."));
12125 remote_trace_set_readonly_regions (struct target_ops
*self
)
12129 bfd_size_type size
;
12135 return; /* No information to give. */
12137 strcpy (target_buf
, "QTro");
12138 offset
= strlen (target_buf
);
12139 for (s
= exec_bfd
->sections
; s
; s
= s
->next
)
12141 char tmp1
[40], tmp2
[40];
12144 if ((s
->flags
& SEC_LOAD
) == 0 ||
12145 /* (s->flags & SEC_CODE) == 0 || */
12146 (s
->flags
& SEC_READONLY
) == 0)
12150 vma
= bfd_get_section_vma (abfd
, s
);
12151 size
= bfd_get_section_size (s
);
12152 sprintf_vma (tmp1
, vma
);
12153 sprintf_vma (tmp2
, vma
+ size
);
12154 sec_length
= 1 + strlen (tmp1
) + 1 + strlen (tmp2
);
12155 if (offset
+ sec_length
+ 1 > target_buf_size
)
12157 if (packet_support (PACKET_qXfer_traceframe_info
) != PACKET_ENABLE
)
12159 Too many sections for read-only sections definition packet."));
12162 xsnprintf (target_buf
+ offset
, target_buf_size
- offset
, ":%s,%s",
12164 offset
+= sec_length
;
12168 putpkt (target_buf
);
12169 getpkt (&target_buf
, &target_buf_size
, 0);
12174 remote_trace_start (struct target_ops
*self
)
12176 putpkt ("QTStart");
12177 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
12178 if (*target_buf
== '\0')
12179 error (_("Target does not support this command."));
12180 if (strcmp (target_buf
, "OK") != 0)
12181 error (_("Bogus reply from target: %s"), target_buf
);
12185 remote_get_trace_status (struct target_ops
*self
, struct trace_status
*ts
)
12187 /* Initialize it just to avoid a GCC false warning. */
12189 /* FIXME we need to get register block size some other way. */
12190 extern int trace_regblock_size
;
12191 enum packet_result result
;
12193 if (packet_support (PACKET_qTStatus
) == PACKET_DISABLE
)
12196 trace_regblock_size
= get_remote_arch_state ()->sizeof_g_packet
;
12198 putpkt ("qTStatus");
12202 p
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
12204 CATCH (ex
, RETURN_MASK_ERROR
)
12206 if (ex
.error
!= TARGET_CLOSE_ERROR
)
12208 exception_fprintf (gdb_stderr
, ex
, "qTStatus: ");
12211 throw_exception (ex
);
12215 result
= packet_ok (p
, &remote_protocol_packets
[PACKET_qTStatus
]);
12217 /* If the remote target doesn't do tracing, flag it. */
12218 if (result
== PACKET_UNKNOWN
)
12221 /* We're working with a live target. */
12222 ts
->filename
= NULL
;
12225 error (_("Bogus trace status reply from target: %s"), target_buf
);
12227 /* Function 'parse_trace_status' sets default value of each field of
12228 'ts' at first, so we don't have to do it here. */
12229 parse_trace_status (p
, ts
);
12231 return ts
->running
;
12235 remote_get_tracepoint_status (struct target_ops
*self
, struct breakpoint
*bp
,
12236 struct uploaded_tp
*utp
)
12238 struct remote_state
*rs
= get_remote_state ();
12240 struct bp_location
*loc
;
12241 struct tracepoint
*tp
= (struct tracepoint
*) bp
;
12242 size_t size
= get_remote_packet_size ();
12246 tp
->base
.hit_count
= 0;
12247 tp
->traceframe_usage
= 0;
12248 for (loc
= tp
->base
.loc
; loc
; loc
= loc
->next
)
12250 /* If the tracepoint was never downloaded, don't go asking for
12252 if (tp
->number_on_target
== 0)
12254 xsnprintf (rs
->buf
, size
, "qTP:%x:%s", tp
->number_on_target
,
12255 phex_nz (loc
->address
, 0));
12257 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
12258 if (reply
&& *reply
)
12261 parse_tracepoint_status (reply
+ 1, bp
, utp
);
12267 utp
->hit_count
= 0;
12268 utp
->traceframe_usage
= 0;
12269 xsnprintf (rs
->buf
, size
, "qTP:%x:%s", utp
->number
,
12270 phex_nz (utp
->addr
, 0));
12272 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
12273 if (reply
&& *reply
)
12276 parse_tracepoint_status (reply
+ 1, bp
, utp
);
12282 remote_trace_stop (struct target_ops
*self
)
12285 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
12286 if (*target_buf
== '\0')
12287 error (_("Target does not support this command."));
12288 if (strcmp (target_buf
, "OK") != 0)
12289 error (_("Bogus reply from target: %s"), target_buf
);
12293 remote_trace_find (struct target_ops
*self
,
12294 enum trace_find_type type
, int num
,
12295 CORE_ADDR addr1
, CORE_ADDR addr2
,
12298 struct remote_state
*rs
= get_remote_state ();
12299 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
12301 int target_frameno
= -1, target_tracept
= -1;
12303 /* Lookups other than by absolute frame number depend on the current
12304 trace selected, so make sure it is correct on the remote end
12306 if (type
!= tfind_number
)
12307 set_remote_traceframe ();
12310 strcpy (p
, "QTFrame:");
12311 p
= strchr (p
, '\0');
12315 xsnprintf (p
, endbuf
- p
, "%x", num
);
12318 xsnprintf (p
, endbuf
- p
, "pc:%s", phex_nz (addr1
, 0));
12321 xsnprintf (p
, endbuf
- p
, "tdp:%x", num
);
12324 xsnprintf (p
, endbuf
- p
, "range:%s:%s", phex_nz (addr1
, 0),
12325 phex_nz (addr2
, 0));
12327 case tfind_outside
:
12328 xsnprintf (p
, endbuf
- p
, "outside:%s:%s", phex_nz (addr1
, 0),
12329 phex_nz (addr2
, 0));
12332 error (_("Unknown trace find type %d"), type
);
12336 reply
= remote_get_noisy_reply (&(rs
->buf
), &rs
->buf_size
);
12337 if (*reply
== '\0')
12338 error (_("Target does not support this command."));
12340 while (reply
&& *reply
)
12345 target_frameno
= (int) strtol (p
, &reply
, 16);
12347 error (_("Unable to parse trace frame number"));
12348 /* Don't update our remote traceframe number cache on failure
12349 to select a remote traceframe. */
12350 if (target_frameno
== -1)
12355 target_tracept
= (int) strtol (p
, &reply
, 16);
12357 error (_("Unable to parse tracepoint number"));
12359 case 'O': /* "OK"? */
12360 if (reply
[1] == 'K' && reply
[2] == '\0')
12363 error (_("Bogus reply from target: %s"), reply
);
12366 error (_("Bogus reply from target: %s"), reply
);
12369 *tpp
= target_tracept
;
12371 rs
->remote_traceframe_number
= target_frameno
;
12372 return target_frameno
;
12376 remote_get_trace_state_variable_value (struct target_ops
*self
,
12377 int tsvnum
, LONGEST
*val
)
12379 struct remote_state
*rs
= get_remote_state ();
12383 set_remote_traceframe ();
12385 xsnprintf (rs
->buf
, get_remote_packet_size (), "qTV:%x", tsvnum
);
12387 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
12388 if (reply
&& *reply
)
12392 unpack_varlen_hex (reply
+ 1, &uval
);
12393 *val
= (LONGEST
) uval
;
12401 remote_save_trace_data (struct target_ops
*self
, const char *filename
)
12403 struct remote_state
*rs
= get_remote_state ();
12407 strcpy (p
, "QTSave:");
12409 if ((p
- rs
->buf
) + strlen (filename
) * 2 >= get_remote_packet_size ())
12410 error (_("Remote file name too long for trace save packet"));
12411 p
+= 2 * bin2hex ((gdb_byte
*) filename
, p
, strlen (filename
));
12414 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
12415 if (*reply
== '\0')
12416 error (_("Target does not support this command."));
12417 if (strcmp (reply
, "OK") != 0)
12418 error (_("Bogus reply from target: %s"), reply
);
12422 /* This is basically a memory transfer, but needs to be its own packet
12423 because we don't know how the target actually organizes its trace
12424 memory, plus we want to be able to ask for as much as possible, but
12425 not be unhappy if we don't get as much as we ask for. */
12428 remote_get_raw_trace_data (struct target_ops
*self
,
12429 gdb_byte
*buf
, ULONGEST offset
, LONGEST len
)
12431 struct remote_state
*rs
= get_remote_state ();
12437 strcpy (p
, "qTBuffer:");
12439 p
+= hexnumstr (p
, offset
);
12441 p
+= hexnumstr (p
, len
);
12445 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
12446 if (reply
&& *reply
)
12448 /* 'l' by itself means we're at the end of the buffer and
12449 there is nothing more to get. */
12453 /* Convert the reply into binary. Limit the number of bytes to
12454 convert according to our passed-in buffer size, rather than
12455 what was returned in the packet; if the target is
12456 unexpectedly generous and gives us a bigger reply than we
12457 asked for, we don't want to crash. */
12458 rslt
= hex2bin (target_buf
, buf
, len
);
12462 /* Something went wrong, flag as an error. */
12467 remote_set_disconnected_tracing (struct target_ops
*self
, int val
)
12469 struct remote_state
*rs
= get_remote_state ();
12471 if (packet_support (PACKET_DisconnectedTracing_feature
) == PACKET_ENABLE
)
12475 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTDisconnected:%x", val
);
12477 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
12478 if (*reply
== '\0')
12479 error (_("Target does not support this command."));
12480 if (strcmp (reply
, "OK") != 0)
12481 error (_("Bogus reply from target: %s"), reply
);
12484 warning (_("Target does not support disconnected tracing."));
12488 remote_core_of_thread (struct target_ops
*ops
, ptid_t ptid
)
12490 struct thread_info
*info
= find_thread_ptid (ptid
);
12492 if (info
&& info
->priv
)
12493 return info
->priv
->core
;
12498 remote_set_circular_trace_buffer (struct target_ops
*self
, int val
)
12500 struct remote_state
*rs
= get_remote_state ();
12503 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTBuffer:circular:%x", val
);
12505 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
12506 if (*reply
== '\0')
12507 error (_("Target does not support this command."));
12508 if (strcmp (reply
, "OK") != 0)
12509 error (_("Bogus reply from target: %s"), reply
);
12512 static struct traceframe_info
*
12513 remote_traceframe_info (struct target_ops
*self
)
12517 text
= target_read_stralloc (¤t_target
,
12518 TARGET_OBJECT_TRACEFRAME_INFO
, NULL
);
12521 struct traceframe_info
*info
;
12522 struct cleanup
*back_to
= make_cleanup (xfree
, text
);
12524 info
= parse_traceframe_info (text
);
12525 do_cleanups (back_to
);
12532 /* Handle the qTMinFTPILen packet. Returns the minimum length of
12533 instruction on which a fast tracepoint may be placed. Returns -1
12534 if the packet is not supported, and 0 if the minimum instruction
12535 length is unknown. */
12538 remote_get_min_fast_tracepoint_insn_len (struct target_ops
*self
)
12540 struct remote_state
*rs
= get_remote_state ();
12543 /* If we're not debugging a process yet, the IPA can't be
12545 if (!target_has_execution
)
12548 /* Make sure the remote is pointing at the right process. */
12549 set_general_process ();
12551 xsnprintf (rs
->buf
, get_remote_packet_size (), "qTMinFTPILen");
12553 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
12554 if (*reply
== '\0')
12558 ULONGEST min_insn_len
;
12560 unpack_varlen_hex (reply
, &min_insn_len
);
12562 return (int) min_insn_len
;
12567 remote_set_trace_buffer_size (struct target_ops
*self
, LONGEST val
)
12569 if (packet_support (PACKET_QTBuffer_size
) != PACKET_DISABLE
)
12571 struct remote_state
*rs
= get_remote_state ();
12572 char *buf
= rs
->buf
;
12573 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
12574 enum packet_result result
;
12576 gdb_assert (val
>= 0 || val
== -1);
12577 buf
+= xsnprintf (buf
, endbuf
- buf
, "QTBuffer:size:");
12578 /* Send -1 as literal "-1" to avoid host size dependency. */
12582 buf
+= hexnumstr (buf
, (ULONGEST
) -val
);
12585 buf
+= hexnumstr (buf
, (ULONGEST
) val
);
12588 remote_get_noisy_reply (&rs
->buf
, &rs
->buf_size
);
12589 result
= packet_ok (rs
->buf
,
12590 &remote_protocol_packets
[PACKET_QTBuffer_size
]);
12592 if (result
!= PACKET_OK
)
12593 warning (_("Bogus reply from target: %s"), rs
->buf
);
12598 remote_set_trace_notes (struct target_ops
*self
,
12599 const char *user
, const char *notes
,
12600 const char *stop_notes
)
12602 struct remote_state
*rs
= get_remote_state ();
12604 char *buf
= rs
->buf
;
12605 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
12608 buf
+= xsnprintf (buf
, endbuf
- buf
, "QTNotes:");
12611 buf
+= xsnprintf (buf
, endbuf
- buf
, "user:");
12612 nbytes
= bin2hex ((gdb_byte
*) user
, buf
, strlen (user
));
12618 buf
+= xsnprintf (buf
, endbuf
- buf
, "notes:");
12619 nbytes
= bin2hex ((gdb_byte
*) notes
, buf
, strlen (notes
));
12625 buf
+= xsnprintf (buf
, endbuf
- buf
, "tstop:");
12626 nbytes
= bin2hex ((gdb_byte
*) stop_notes
, buf
, strlen (stop_notes
));
12630 /* Ensure the buffer is terminated. */
12634 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
12635 if (*reply
== '\0')
12638 if (strcmp (reply
, "OK") != 0)
12639 error (_("Bogus reply from target: %s"), reply
);
12645 remote_use_agent (struct target_ops
*self
, int use
)
12647 if (packet_support (PACKET_QAgent
) != PACKET_DISABLE
)
12649 struct remote_state
*rs
= get_remote_state ();
12651 /* If the stub supports QAgent. */
12652 xsnprintf (rs
->buf
, get_remote_packet_size (), "QAgent:%d", use
);
12654 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
12656 if (strcmp (rs
->buf
, "OK") == 0)
12667 remote_can_use_agent (struct target_ops
*self
)
12669 return (packet_support (PACKET_QAgent
) != PACKET_DISABLE
);
12672 struct btrace_target_info
12674 /* The ptid of the traced thread. */
12677 /* The obtained branch trace configuration. */
12678 struct btrace_config conf
;
12681 /* Reset our idea of our target's btrace configuration. */
12684 remote_btrace_reset (void)
12686 struct remote_state
*rs
= get_remote_state ();
12688 memset (&rs
->btrace_config
, 0, sizeof (rs
->btrace_config
));
12691 /* Check whether the target supports branch tracing. */
12694 remote_supports_btrace (struct target_ops
*self
, enum btrace_format format
)
12696 if (packet_support (PACKET_Qbtrace_off
) != PACKET_ENABLE
)
12698 if (packet_support (PACKET_qXfer_btrace
) != PACKET_ENABLE
)
12703 case BTRACE_FORMAT_NONE
:
12706 case BTRACE_FORMAT_BTS
:
12707 return (packet_support (PACKET_Qbtrace_bts
) == PACKET_ENABLE
);
12709 case BTRACE_FORMAT_PT
:
12710 /* The trace is decoded on the host. Even if our target supports it,
12711 we still need to have libipt to decode the trace. */
12712 #if defined (HAVE_LIBIPT)
12713 return (packet_support (PACKET_Qbtrace_pt
) == PACKET_ENABLE
);
12714 #else /* !defined (HAVE_LIBIPT) */
12716 #endif /* !defined (HAVE_LIBIPT) */
12719 internal_error (__FILE__
, __LINE__
, _("Unknown branch trace format"));
12722 /* Synchronize the configuration with the target. */
12725 btrace_sync_conf (const struct btrace_config
*conf
)
12727 struct packet_config
*packet
;
12728 struct remote_state
*rs
;
12729 char *buf
, *pos
, *endbuf
;
12731 rs
= get_remote_state ();
12733 endbuf
= buf
+ get_remote_packet_size ();
12735 packet
= &remote_protocol_packets
[PACKET_Qbtrace_conf_bts_size
];
12736 if (packet_config_support (packet
) == PACKET_ENABLE
12737 && conf
->bts
.size
!= rs
->btrace_config
.bts
.size
)
12740 pos
+= xsnprintf (pos
, endbuf
- pos
, "%s=0x%x", packet
->name
,
12744 getpkt (&buf
, &rs
->buf_size
, 0);
12746 if (packet_ok (buf
, packet
) == PACKET_ERROR
)
12748 if (buf
[0] == 'E' && buf
[1] == '.')
12749 error (_("Failed to configure the BTS buffer size: %s"), buf
+ 2);
12751 error (_("Failed to configure the BTS buffer size."));
12754 rs
->btrace_config
.bts
.size
= conf
->bts
.size
;
12757 packet
= &remote_protocol_packets
[PACKET_Qbtrace_conf_pt_size
];
12758 if (packet_config_support (packet
) == PACKET_ENABLE
12759 && conf
->pt
.size
!= rs
->btrace_config
.pt
.size
)
12762 pos
+= xsnprintf (pos
, endbuf
- pos
, "%s=0x%x", packet
->name
,
12766 getpkt (&buf
, &rs
->buf_size
, 0);
12768 if (packet_ok (buf
, packet
) == PACKET_ERROR
)
12770 if (buf
[0] == 'E' && buf
[1] == '.')
12771 error (_("Failed to configure the trace buffer size: %s"), buf
+ 2);
12773 error (_("Failed to configure the trace buffer size."));
12776 rs
->btrace_config
.pt
.size
= conf
->pt
.size
;
12780 /* Read the current thread's btrace configuration from the target and
12781 store it into CONF. */
12784 btrace_read_config (struct btrace_config
*conf
)
12788 xml
= target_read_stralloc (¤t_target
,
12789 TARGET_OBJECT_BTRACE_CONF
, "");
12792 struct cleanup
*cleanup
;
12794 cleanup
= make_cleanup (xfree
, xml
);
12795 parse_xml_btrace_conf (conf
, xml
);
12796 do_cleanups (cleanup
);
12800 /* Enable branch tracing. */
12802 static struct btrace_target_info
*
12803 remote_enable_btrace (struct target_ops
*self
, ptid_t ptid
,
12804 const struct btrace_config
*conf
)
12806 struct btrace_target_info
*tinfo
= NULL
;
12807 struct packet_config
*packet
= NULL
;
12808 struct remote_state
*rs
= get_remote_state ();
12809 char *buf
= rs
->buf
;
12810 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
12812 switch (conf
->format
)
12814 case BTRACE_FORMAT_BTS
:
12815 packet
= &remote_protocol_packets
[PACKET_Qbtrace_bts
];
12818 case BTRACE_FORMAT_PT
:
12819 packet
= &remote_protocol_packets
[PACKET_Qbtrace_pt
];
12823 if (packet
== NULL
|| packet_config_support (packet
) != PACKET_ENABLE
)
12824 error (_("Target does not support branch tracing."));
12826 btrace_sync_conf (conf
);
12828 set_general_thread (ptid
);
12830 buf
+= xsnprintf (buf
, endbuf
- buf
, "%s", packet
->name
);
12832 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
12834 if (packet_ok (rs
->buf
, packet
) == PACKET_ERROR
)
12836 if (rs
->buf
[0] == 'E' && rs
->buf
[1] == '.')
12837 error (_("Could not enable branch tracing for %s: %s"),
12838 target_pid_to_str (ptid
), rs
->buf
+ 2);
12840 error (_("Could not enable branch tracing for %s."),
12841 target_pid_to_str (ptid
));
12844 tinfo
= XCNEW (struct btrace_target_info
);
12845 tinfo
->ptid
= ptid
;
12847 /* If we fail to read the configuration, we lose some information, but the
12848 tracing itself is not impacted. */
12851 btrace_read_config (&tinfo
->conf
);
12853 CATCH (err
, RETURN_MASK_ERROR
)
12855 if (err
.message
!= NULL
)
12856 warning ("%s", err
.message
);
12863 /* Disable branch tracing. */
12866 remote_disable_btrace (struct target_ops
*self
,
12867 struct btrace_target_info
*tinfo
)
12869 struct packet_config
*packet
= &remote_protocol_packets
[PACKET_Qbtrace_off
];
12870 struct remote_state
*rs
= get_remote_state ();
12871 char *buf
= rs
->buf
;
12872 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
12874 if (packet_config_support (packet
) != PACKET_ENABLE
)
12875 error (_("Target does not support branch tracing."));
12877 set_general_thread (tinfo
->ptid
);
12879 buf
+= xsnprintf (buf
, endbuf
- buf
, "%s", packet
->name
);
12881 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
12883 if (packet_ok (rs
->buf
, packet
) == PACKET_ERROR
)
12885 if (rs
->buf
[0] == 'E' && rs
->buf
[1] == '.')
12886 error (_("Could not disable branch tracing for %s: %s"),
12887 target_pid_to_str (tinfo
->ptid
), rs
->buf
+ 2);
12889 error (_("Could not disable branch tracing for %s."),
12890 target_pid_to_str (tinfo
->ptid
));
12896 /* Teardown branch tracing. */
12899 remote_teardown_btrace (struct target_ops
*self
,
12900 struct btrace_target_info
*tinfo
)
12902 /* We must not talk to the target during teardown. */
12906 /* Read the branch trace. */
12908 static enum btrace_error
12909 remote_read_btrace (struct target_ops
*self
,
12910 struct btrace_data
*btrace
,
12911 struct btrace_target_info
*tinfo
,
12912 enum btrace_read_type type
)
12914 struct packet_config
*packet
= &remote_protocol_packets
[PACKET_qXfer_btrace
];
12915 struct remote_state
*rs
= get_remote_state ();
12916 struct cleanup
*cleanup
;
12920 if (packet_config_support (packet
) != PACKET_ENABLE
)
12921 error (_("Target does not support branch tracing."));
12923 #if !defined(HAVE_LIBEXPAT)
12924 error (_("Cannot process branch tracing result. XML parsing not supported."));
12929 case BTRACE_READ_ALL
:
12932 case BTRACE_READ_NEW
:
12935 case BTRACE_READ_DELTA
:
12939 internal_error (__FILE__
, __LINE__
,
12940 _("Bad branch tracing read type: %u."),
12941 (unsigned int) type
);
12944 xml
= target_read_stralloc (¤t_target
,
12945 TARGET_OBJECT_BTRACE
, annex
);
12947 return BTRACE_ERR_UNKNOWN
;
12949 cleanup
= make_cleanup (xfree
, xml
);
12950 parse_xml_btrace (btrace
, xml
);
12951 do_cleanups (cleanup
);
12953 return BTRACE_ERR_NONE
;
12956 static const struct btrace_config
*
12957 remote_btrace_conf (struct target_ops
*self
,
12958 const struct btrace_target_info
*tinfo
)
12960 return &tinfo
->conf
;
12964 remote_augmented_libraries_svr4_read (struct target_ops
*self
)
12966 return (packet_support (PACKET_augmented_libraries_svr4_read_feature
)
12970 /* Implementation of to_load. */
12973 remote_load (struct target_ops
*self
, const char *name
, int from_tty
)
12975 generic_load (name
, from_tty
);
12978 /* Accepts an integer PID; returns a string representing a file that
12979 can be opened on the remote side to get the symbols for the child
12980 process. Returns NULL if the operation is not supported. */
12983 remote_pid_to_exec_file (struct target_ops
*self
, int pid
)
12985 static char *filename
= NULL
;
12986 struct inferior
*inf
;
12987 char *annex
= NULL
;
12989 if (packet_support (PACKET_qXfer_exec_file
) != PACKET_ENABLE
)
12992 if (filename
!= NULL
)
12995 inf
= find_inferior_pid (pid
);
12997 internal_error (__FILE__
, __LINE__
,
12998 _("not currently attached to process %d"), pid
);
13000 if (!inf
->fake_pid_p
)
13002 const int annex_size
= 9;
13004 annex
= (char *) alloca (annex_size
);
13005 xsnprintf (annex
, annex_size
, "%x", pid
);
13008 filename
= target_read_stralloc (¤t_target
,
13009 TARGET_OBJECT_EXEC_FILE
, annex
);
13014 /* Implement the to_can_do_single_step target_ops method. */
13017 remote_can_do_single_step (struct target_ops
*ops
)
13019 /* We can only tell whether target supports single step or not by
13020 supported s and S vCont actions if the stub supports vContSupported
13021 feature. If the stub doesn't support vContSupported feature,
13022 we have conservatively to think target doesn't supports single
13024 if (packet_support (PACKET_vContSupported
) == PACKET_ENABLE
)
13026 struct remote_state
*rs
= get_remote_state ();
13028 if (packet_support (PACKET_vCont
) == PACKET_SUPPORT_UNKNOWN
)
13029 remote_vcont_probe (rs
);
13031 return rs
->supports_vCont
.s
&& rs
->supports_vCont
.S
;
13038 init_remote_ops (void)
13040 remote_ops
.to_shortname
= "remote";
13041 remote_ops
.to_longname
= "Remote serial target in gdb-specific protocol";
13042 remote_ops
.to_doc
=
13043 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
13044 Specify the serial device it is connected to\n\
13045 (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).";
13046 remote_ops
.to_open
= remote_open
;
13047 remote_ops
.to_close
= remote_close
;
13048 remote_ops
.to_detach
= remote_detach
;
13049 remote_ops
.to_disconnect
= remote_disconnect
;
13050 remote_ops
.to_resume
= remote_resume
;
13051 remote_ops
.to_wait
= remote_wait
;
13052 remote_ops
.to_fetch_registers
= remote_fetch_registers
;
13053 remote_ops
.to_store_registers
= remote_store_registers
;
13054 remote_ops
.to_prepare_to_store
= remote_prepare_to_store
;
13055 remote_ops
.to_files_info
= remote_files_info
;
13056 remote_ops
.to_insert_breakpoint
= remote_insert_breakpoint
;
13057 remote_ops
.to_remove_breakpoint
= remote_remove_breakpoint
;
13058 remote_ops
.to_stopped_by_sw_breakpoint
= remote_stopped_by_sw_breakpoint
;
13059 remote_ops
.to_supports_stopped_by_sw_breakpoint
= remote_supports_stopped_by_sw_breakpoint
;
13060 remote_ops
.to_stopped_by_hw_breakpoint
= remote_stopped_by_hw_breakpoint
;
13061 remote_ops
.to_supports_stopped_by_hw_breakpoint
= remote_supports_stopped_by_hw_breakpoint
;
13062 remote_ops
.to_stopped_by_watchpoint
= remote_stopped_by_watchpoint
;
13063 remote_ops
.to_stopped_data_address
= remote_stopped_data_address
;
13064 remote_ops
.to_watchpoint_addr_within_range
=
13065 remote_watchpoint_addr_within_range
;
13066 remote_ops
.to_can_use_hw_breakpoint
= remote_check_watch_resources
;
13067 remote_ops
.to_insert_hw_breakpoint
= remote_insert_hw_breakpoint
;
13068 remote_ops
.to_remove_hw_breakpoint
= remote_remove_hw_breakpoint
;
13069 remote_ops
.to_region_ok_for_hw_watchpoint
13070 = remote_region_ok_for_hw_watchpoint
;
13071 remote_ops
.to_insert_watchpoint
= remote_insert_watchpoint
;
13072 remote_ops
.to_remove_watchpoint
= remote_remove_watchpoint
;
13073 remote_ops
.to_kill
= remote_kill
;
13074 remote_ops
.to_load
= remote_load
;
13075 remote_ops
.to_mourn_inferior
= remote_mourn
;
13076 remote_ops
.to_pass_signals
= remote_pass_signals
;
13077 remote_ops
.to_set_syscall_catchpoint
= remote_set_syscall_catchpoint
;
13078 remote_ops
.to_program_signals
= remote_program_signals
;
13079 remote_ops
.to_thread_alive
= remote_thread_alive
;
13080 remote_ops
.to_thread_name
= remote_thread_name
;
13081 remote_ops
.to_update_thread_list
= remote_update_thread_list
;
13082 remote_ops
.to_pid_to_str
= remote_pid_to_str
;
13083 remote_ops
.to_extra_thread_info
= remote_threads_extra_info
;
13084 remote_ops
.to_get_ada_task_ptid
= remote_get_ada_task_ptid
;
13085 remote_ops
.to_stop
= remote_stop
;
13086 remote_ops
.to_interrupt
= remote_interrupt
;
13087 remote_ops
.to_check_pending_interrupt
= remote_check_pending_interrupt
;
13088 remote_ops
.to_xfer_partial
= remote_xfer_partial
;
13089 remote_ops
.to_rcmd
= remote_rcmd
;
13090 remote_ops
.to_pid_to_exec_file
= remote_pid_to_exec_file
;
13091 remote_ops
.to_log_command
= serial_log_command
;
13092 remote_ops
.to_get_thread_local_address
= remote_get_thread_local_address
;
13093 remote_ops
.to_stratum
= process_stratum
;
13094 remote_ops
.to_has_all_memory
= default_child_has_all_memory
;
13095 remote_ops
.to_has_memory
= default_child_has_memory
;
13096 remote_ops
.to_has_stack
= default_child_has_stack
;
13097 remote_ops
.to_has_registers
= default_child_has_registers
;
13098 remote_ops
.to_has_execution
= default_child_has_execution
;
13099 remote_ops
.to_has_thread_control
= tc_schedlock
; /* can lock scheduler */
13100 remote_ops
.to_can_execute_reverse
= remote_can_execute_reverse
;
13101 remote_ops
.to_magic
= OPS_MAGIC
;
13102 remote_ops
.to_memory_map
= remote_memory_map
;
13103 remote_ops
.to_flash_erase
= remote_flash_erase
;
13104 remote_ops
.to_flash_done
= remote_flash_done
;
13105 remote_ops
.to_read_description
= remote_read_description
;
13106 remote_ops
.to_search_memory
= remote_search_memory
;
13107 remote_ops
.to_can_async_p
= remote_can_async_p
;
13108 remote_ops
.to_is_async_p
= remote_is_async_p
;
13109 remote_ops
.to_async
= remote_async
;
13110 remote_ops
.to_thread_events
= remote_thread_events
;
13111 remote_ops
.to_can_do_single_step
= remote_can_do_single_step
;
13112 remote_ops
.to_terminal_inferior
= remote_terminal_inferior
;
13113 remote_ops
.to_terminal_ours
= remote_terminal_ours
;
13114 remote_ops
.to_supports_non_stop
= remote_supports_non_stop
;
13115 remote_ops
.to_supports_multi_process
= remote_supports_multi_process
;
13116 remote_ops
.to_supports_disable_randomization
13117 = remote_supports_disable_randomization
;
13118 remote_ops
.to_filesystem_is_local
= remote_filesystem_is_local
;
13119 remote_ops
.to_fileio_open
= remote_hostio_open
;
13120 remote_ops
.to_fileio_pwrite
= remote_hostio_pwrite
;
13121 remote_ops
.to_fileio_pread
= remote_hostio_pread
;
13122 remote_ops
.to_fileio_fstat
= remote_hostio_fstat
;
13123 remote_ops
.to_fileio_close
= remote_hostio_close
;
13124 remote_ops
.to_fileio_unlink
= remote_hostio_unlink
;
13125 remote_ops
.to_fileio_readlink
= remote_hostio_readlink
;
13126 remote_ops
.to_supports_enable_disable_tracepoint
= remote_supports_enable_disable_tracepoint
;
13127 remote_ops
.to_supports_string_tracing
= remote_supports_string_tracing
;
13128 remote_ops
.to_supports_evaluation_of_breakpoint_conditions
= remote_supports_cond_breakpoints
;
13129 remote_ops
.to_can_run_breakpoint_commands
= remote_can_run_breakpoint_commands
;
13130 remote_ops
.to_trace_init
= remote_trace_init
;
13131 remote_ops
.to_download_tracepoint
= remote_download_tracepoint
;
13132 remote_ops
.to_can_download_tracepoint
= remote_can_download_tracepoint
;
13133 remote_ops
.to_download_trace_state_variable
13134 = remote_download_trace_state_variable
;
13135 remote_ops
.to_enable_tracepoint
= remote_enable_tracepoint
;
13136 remote_ops
.to_disable_tracepoint
= remote_disable_tracepoint
;
13137 remote_ops
.to_trace_set_readonly_regions
= remote_trace_set_readonly_regions
;
13138 remote_ops
.to_trace_start
= remote_trace_start
;
13139 remote_ops
.to_get_trace_status
= remote_get_trace_status
;
13140 remote_ops
.to_get_tracepoint_status
= remote_get_tracepoint_status
;
13141 remote_ops
.to_trace_stop
= remote_trace_stop
;
13142 remote_ops
.to_trace_find
= remote_trace_find
;
13143 remote_ops
.to_get_trace_state_variable_value
13144 = remote_get_trace_state_variable_value
;
13145 remote_ops
.to_save_trace_data
= remote_save_trace_data
;
13146 remote_ops
.to_upload_tracepoints
= remote_upload_tracepoints
;
13147 remote_ops
.to_upload_trace_state_variables
13148 = remote_upload_trace_state_variables
;
13149 remote_ops
.to_get_raw_trace_data
= remote_get_raw_trace_data
;
13150 remote_ops
.to_get_min_fast_tracepoint_insn_len
= remote_get_min_fast_tracepoint_insn_len
;
13151 remote_ops
.to_set_disconnected_tracing
= remote_set_disconnected_tracing
;
13152 remote_ops
.to_set_circular_trace_buffer
= remote_set_circular_trace_buffer
;
13153 remote_ops
.to_set_trace_buffer_size
= remote_set_trace_buffer_size
;
13154 remote_ops
.to_set_trace_notes
= remote_set_trace_notes
;
13155 remote_ops
.to_core_of_thread
= remote_core_of_thread
;
13156 remote_ops
.to_verify_memory
= remote_verify_memory
;
13157 remote_ops
.to_get_tib_address
= remote_get_tib_address
;
13158 remote_ops
.to_set_permissions
= remote_set_permissions
;
13159 remote_ops
.to_static_tracepoint_marker_at
13160 = remote_static_tracepoint_marker_at
;
13161 remote_ops
.to_static_tracepoint_markers_by_strid
13162 = remote_static_tracepoint_markers_by_strid
;
13163 remote_ops
.to_traceframe_info
= remote_traceframe_info
;
13164 remote_ops
.to_use_agent
= remote_use_agent
;
13165 remote_ops
.to_can_use_agent
= remote_can_use_agent
;
13166 remote_ops
.to_supports_btrace
= remote_supports_btrace
;
13167 remote_ops
.to_enable_btrace
= remote_enable_btrace
;
13168 remote_ops
.to_disable_btrace
= remote_disable_btrace
;
13169 remote_ops
.to_teardown_btrace
= remote_teardown_btrace
;
13170 remote_ops
.to_read_btrace
= remote_read_btrace
;
13171 remote_ops
.to_btrace_conf
= remote_btrace_conf
;
13172 remote_ops
.to_augmented_libraries_svr4_read
=
13173 remote_augmented_libraries_svr4_read
;
13174 remote_ops
.to_follow_fork
= remote_follow_fork
;
13175 remote_ops
.to_follow_exec
= remote_follow_exec
;
13176 remote_ops
.to_insert_fork_catchpoint
= remote_insert_fork_catchpoint
;
13177 remote_ops
.to_remove_fork_catchpoint
= remote_remove_fork_catchpoint
;
13178 remote_ops
.to_insert_vfork_catchpoint
= remote_insert_vfork_catchpoint
;
13179 remote_ops
.to_remove_vfork_catchpoint
= remote_remove_vfork_catchpoint
;
13180 remote_ops
.to_insert_exec_catchpoint
= remote_insert_exec_catchpoint
;
13181 remote_ops
.to_remove_exec_catchpoint
= remote_remove_exec_catchpoint
;
13184 /* Set up the extended remote vector by making a copy of the standard
13185 remote vector and adding to it. */
13188 init_extended_remote_ops (void)
13190 extended_remote_ops
= remote_ops
;
13192 extended_remote_ops
.to_shortname
= "extended-remote";
13193 extended_remote_ops
.to_longname
=
13194 "Extended remote serial target in gdb-specific protocol";
13195 extended_remote_ops
.to_doc
=
13196 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
13197 Specify the serial device it is connected to (e.g. /dev/ttya).";
13198 extended_remote_ops
.to_open
= extended_remote_open
;
13199 extended_remote_ops
.to_create_inferior
= extended_remote_create_inferior
;
13200 extended_remote_ops
.to_detach
= extended_remote_detach
;
13201 extended_remote_ops
.to_attach
= extended_remote_attach
;
13202 extended_remote_ops
.to_post_attach
= extended_remote_post_attach
;
13203 extended_remote_ops
.to_supports_disable_randomization
13204 = extended_remote_supports_disable_randomization
;
13208 remote_can_async_p (struct target_ops
*ops
)
13210 struct remote_state
*rs
= get_remote_state ();
13212 if (!target_async_permitted
)
13213 /* We only enable async when the user specifically asks for it. */
13216 /* We're async whenever the serial device is. */
13217 return serial_can_async_p (rs
->remote_desc
);
13221 remote_is_async_p (struct target_ops
*ops
)
13223 struct remote_state
*rs
= get_remote_state ();
13225 if (!target_async_permitted
)
13226 /* We only enable async when the user specifically asks for it. */
13229 /* We're async whenever the serial device is. */
13230 return serial_is_async_p (rs
->remote_desc
);
13233 /* Pass the SERIAL event on and up to the client. One day this code
13234 will be able to delay notifying the client of an event until the
13235 point where an entire packet has been received. */
13237 static serial_event_ftype remote_async_serial_handler
;
13240 remote_async_serial_handler (struct serial
*scb
, void *context
)
13242 struct remote_state
*rs
= (struct remote_state
*) context
;
13244 /* Don't propogate error information up to the client. Instead let
13245 the client find out about the error by querying the target. */
13246 inferior_event_handler (INF_REG_EVENT
, NULL
);
13250 remote_async_inferior_event_handler (gdb_client_data data
)
13252 inferior_event_handler (INF_REG_EVENT
, NULL
);
13256 remote_async (struct target_ops
*ops
, int enable
)
13258 struct remote_state
*rs
= get_remote_state ();
13262 serial_async (rs
->remote_desc
, remote_async_serial_handler
, rs
);
13264 /* If there are pending events in the stop reply queue tell the
13265 event loop to process them. */
13266 if (!QUEUE_is_empty (stop_reply_p
, stop_reply_queue
))
13267 mark_async_event_handler (remote_async_inferior_event_token
);
13268 /* For simplicity, below we clear the pending events token
13269 without remembering whether it is marked, so here we always
13270 mark it. If there's actually no pending notification to
13271 process, this ends up being a no-op (other than a spurious
13272 event-loop wakeup). */
13273 if (target_is_non_stop_p ())
13274 mark_async_event_handler (rs
->notif_state
->get_pending_events_token
);
13278 serial_async (rs
->remote_desc
, NULL
, NULL
);
13279 /* If the core is disabling async, it doesn't want to be
13280 disturbed with target events. Clear all async event sources
13282 clear_async_event_handler (remote_async_inferior_event_token
);
13283 if (target_is_non_stop_p ())
13284 clear_async_event_handler (rs
->notif_state
->get_pending_events_token
);
13288 /* Implementation of the to_thread_events method. */
13291 remote_thread_events (struct target_ops
*ops
, int enable
)
13293 struct remote_state
*rs
= get_remote_state ();
13294 size_t size
= get_remote_packet_size ();
13297 if (packet_support (PACKET_QThreadEvents
) == PACKET_DISABLE
)
13300 xsnprintf (rs
->buf
, size
, "QThreadEvents:%x", enable
? 1 : 0);
13302 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
13304 switch (packet_ok (rs
->buf
,
13305 &remote_protocol_packets
[PACKET_QThreadEvents
]))
13308 if (strcmp (rs
->buf
, "OK") != 0)
13309 error (_("Remote refused setting thread events: %s"), rs
->buf
);
13312 warning (_("Remote failure reply: %s"), rs
->buf
);
13314 case PACKET_UNKNOWN
:
13320 set_remote_cmd (char *args
, int from_tty
)
13322 help_list (remote_set_cmdlist
, "set remote ", all_commands
, gdb_stdout
);
13326 show_remote_cmd (char *args
, int from_tty
)
13328 /* We can't just use cmd_show_list here, because we want to skip
13329 the redundant "show remote Z-packet" and the legacy aliases. */
13330 struct cleanup
*showlist_chain
;
13331 struct cmd_list_element
*list
= remote_show_cmdlist
;
13332 struct ui_out
*uiout
= current_uiout
;
13334 showlist_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "showlist");
13335 for (; list
!= NULL
; list
= list
->next
)
13336 if (strcmp (list
->name
, "Z-packet") == 0)
13338 else if (list
->type
== not_set_cmd
)
13339 /* Alias commands are exactly like the original, except they
13340 don't have the normal type. */
13344 struct cleanup
*option_chain
13345 = make_cleanup_ui_out_tuple_begin_end (uiout
, "option");
13347 ui_out_field_string (uiout
, "name", list
->name
);
13348 ui_out_text (uiout
, ": ");
13349 if (list
->type
== show_cmd
)
13350 do_show_command ((char *) NULL
, from_tty
, list
);
13352 cmd_func (list
, NULL
, from_tty
);
13353 /* Close the tuple. */
13354 do_cleanups (option_chain
);
13357 /* Close the tuple. */
13358 do_cleanups (showlist_chain
);
13362 /* Function to be called whenever a new objfile (shlib) is detected. */
13364 remote_new_objfile (struct objfile
*objfile
)
13366 struct remote_state
*rs
= get_remote_state ();
13368 if (rs
->remote_desc
!= 0) /* Have a remote connection. */
13369 remote_check_symbols ();
13372 /* Pull all the tracepoints defined on the target and create local
13373 data structures representing them. We don't want to create real
13374 tracepoints yet, we don't want to mess up the user's existing
13378 remote_upload_tracepoints (struct target_ops
*self
, struct uploaded_tp
**utpp
)
13380 struct remote_state
*rs
= get_remote_state ();
13383 /* Ask for a first packet of tracepoint definition. */
13385 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
13387 while (*p
&& *p
!= 'l')
13389 parse_tracepoint_definition (p
, utpp
);
13390 /* Ask for another packet of tracepoint definition. */
13392 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
13399 remote_upload_trace_state_variables (struct target_ops
*self
,
13400 struct uploaded_tsv
**utsvp
)
13402 struct remote_state
*rs
= get_remote_state ();
13405 /* Ask for a first packet of variable definition. */
13407 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
13409 while (*p
&& *p
!= 'l')
13411 parse_tsv_definition (p
, utsvp
);
13412 /* Ask for another packet of variable definition. */
13414 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
13420 /* The "set/show range-stepping" show hook. */
13423 show_range_stepping (struct ui_file
*file
, int from_tty
,
13424 struct cmd_list_element
*c
,
13427 fprintf_filtered (file
,
13428 _("Debugger's willingness to use range stepping "
13429 "is %s.\n"), value
);
13432 /* The "set/show range-stepping" set hook. */
13435 set_range_stepping (char *ignore_args
, int from_tty
,
13436 struct cmd_list_element
*c
)
13438 struct remote_state
*rs
= get_remote_state ();
13440 /* Whene enabling, check whether range stepping is actually
13441 supported by the target, and warn if not. */
13442 if (use_range_stepping
)
13444 if (rs
->remote_desc
!= NULL
)
13446 if (packet_support (PACKET_vCont
) == PACKET_SUPPORT_UNKNOWN
)
13447 remote_vcont_probe (rs
);
13449 if (packet_support (PACKET_vCont
) == PACKET_ENABLE
13450 && rs
->supports_vCont
.r
)
13454 warning (_("Range stepping is not supported by the current target"));
13459 _initialize_remote (void)
13461 struct remote_state
*rs
;
13462 struct cmd_list_element
*cmd
;
13463 const char *cmd_name
;
13465 /* architecture specific data */
13466 remote_gdbarch_data_handle
=
13467 gdbarch_data_register_post_init (init_remote_state
);
13468 remote_g_packet_data_handle
=
13469 gdbarch_data_register_pre_init (remote_g_packet_data_init
);
13472 = register_program_space_data_with_cleanup (NULL
,
13473 remote_pspace_data_cleanup
);
13475 /* Initialize the per-target state. At the moment there is only one
13476 of these, not one per target. Only one target is active at a
13478 remote_state
= new_remote_state ();
13480 init_remote_ops ();
13481 add_target (&remote_ops
);
13483 init_extended_remote_ops ();
13484 add_target (&extended_remote_ops
);
13486 /* Hook into new objfile notification. */
13487 observer_attach_new_objfile (remote_new_objfile
);
13488 /* We're no longer interested in notification events of an inferior
13490 observer_attach_inferior_exit (discard_pending_stop_replies
);
13492 /* Set up signal handlers. */
13493 async_sigint_remote_token
=
13494 create_async_signal_handler (async_remote_interrupt
, NULL
);
13495 async_sigint_remote_twice_token
=
13496 create_async_signal_handler (async_remote_interrupt_twice
, NULL
);
13499 init_remote_threadtests ();
13502 stop_reply_queue
= QUEUE_alloc (stop_reply_p
, stop_reply_xfree
);
13503 /* set/show remote ... */
13505 add_prefix_cmd ("remote", class_maintenance
, set_remote_cmd
, _("\
13506 Remote protocol specific variables\n\
13507 Configure various remote-protocol specific variables such as\n\
13508 the packets being used"),
13509 &remote_set_cmdlist
, "set remote ",
13510 0 /* allow-unknown */, &setlist
);
13511 add_prefix_cmd ("remote", class_maintenance
, show_remote_cmd
, _("\
13512 Remote protocol specific variables\n\
13513 Configure various remote-protocol specific variables such as\n\
13514 the packets being used"),
13515 &remote_show_cmdlist
, "show remote ",
13516 0 /* allow-unknown */, &showlist
);
13518 add_cmd ("compare-sections", class_obscure
, compare_sections_command
, _("\
13519 Compare section data on target to the exec file.\n\
13520 Argument is a single section name (default: all loaded sections).\n\
13521 To compare only read-only loaded sections, specify the -r option."),
13524 add_cmd ("packet", class_maintenance
, packet_command
, _("\
13525 Send an arbitrary packet to a remote target.\n\
13526 maintenance packet TEXT\n\
13527 If GDB is talking to an inferior via the GDB serial protocol, then\n\
13528 this command sends the string TEXT to the inferior, and displays the\n\
13529 response packet. GDB supplies the initial `$' character, and the\n\
13530 terminating `#' character and checksum."),
13533 add_setshow_boolean_cmd ("remotebreak", no_class
, &remote_break
, _("\
13534 Set whether to send break if interrupted."), _("\
13535 Show whether to send break if interrupted."), _("\
13536 If set, a break, instead of a cntrl-c, is sent to the remote target."),
13537 set_remotebreak
, show_remotebreak
,
13538 &setlist
, &showlist
);
13539 cmd_name
= "remotebreak";
13540 cmd
= lookup_cmd (&cmd_name
, setlist
, "", -1, 1);
13541 deprecate_cmd (cmd
, "set remote interrupt-sequence");
13542 cmd_name
= "remotebreak"; /* needed because lookup_cmd updates the pointer */
13543 cmd
= lookup_cmd (&cmd_name
, showlist
, "", -1, 1);
13544 deprecate_cmd (cmd
, "show remote interrupt-sequence");
13546 add_setshow_enum_cmd ("interrupt-sequence", class_support
,
13547 interrupt_sequence_modes
, &interrupt_sequence_mode
,
13549 Set interrupt sequence to remote target."), _("\
13550 Show interrupt sequence to remote target."), _("\
13551 Valid value is \"Ctrl-C\", \"BREAK\" or \"BREAK-g\". The default is \"Ctrl-C\"."),
13552 NULL
, show_interrupt_sequence
,
13553 &remote_set_cmdlist
,
13554 &remote_show_cmdlist
);
13556 add_setshow_boolean_cmd ("interrupt-on-connect", class_support
,
13557 &interrupt_on_connect
, _("\
13558 Set whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \
13559 Show whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \
13560 If set, interrupt sequence is sent to remote target."),
13562 &remote_set_cmdlist
, &remote_show_cmdlist
);
13564 /* Install commands for configuring memory read/write packets. */
13566 add_cmd ("remotewritesize", no_class
, set_memory_write_packet_size
, _("\
13567 Set the maximum number of bytes per memory write packet (deprecated)."),
13569 add_cmd ("remotewritesize", no_class
, show_memory_write_packet_size
, _("\
13570 Show the maximum number of bytes per memory write packet (deprecated)."),
13572 add_cmd ("memory-write-packet-size", no_class
,
13573 set_memory_write_packet_size
, _("\
13574 Set the maximum number of bytes per memory-write packet.\n\
13575 Specify the number of bytes in a packet or 0 (zero) for the\n\
13576 default packet size. The actual limit is further reduced\n\
13577 dependent on the target. Specify ``fixed'' to disable the\n\
13578 further restriction and ``limit'' to enable that restriction."),
13579 &remote_set_cmdlist
);
13580 add_cmd ("memory-read-packet-size", no_class
,
13581 set_memory_read_packet_size
, _("\
13582 Set the maximum number of bytes per memory-read packet.\n\
13583 Specify the number of bytes in a packet or 0 (zero) for the\n\
13584 default packet size. The actual limit is further reduced\n\
13585 dependent on the target. Specify ``fixed'' to disable the\n\
13586 further restriction and ``limit'' to enable that restriction."),
13587 &remote_set_cmdlist
);
13588 add_cmd ("memory-write-packet-size", no_class
,
13589 show_memory_write_packet_size
,
13590 _("Show the maximum number of bytes per memory-write packet."),
13591 &remote_show_cmdlist
);
13592 add_cmd ("memory-read-packet-size", no_class
,
13593 show_memory_read_packet_size
,
13594 _("Show the maximum number of bytes per memory-read packet."),
13595 &remote_show_cmdlist
);
13597 add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class
,
13598 &remote_hw_watchpoint_limit
, _("\
13599 Set the maximum number of target hardware watchpoints."), _("\
13600 Show the maximum number of target hardware watchpoints."), _("\
13601 Specify a negative limit for unlimited."),
13602 NULL
, NULL
, /* FIXME: i18n: The maximum
13603 number of target hardware
13604 watchpoints is %s. */
13605 &remote_set_cmdlist
, &remote_show_cmdlist
);
13606 add_setshow_zinteger_cmd ("hardware-watchpoint-length-limit", no_class
,
13607 &remote_hw_watchpoint_length_limit
, _("\
13608 Set the maximum length (in bytes) of a target hardware watchpoint."), _("\
13609 Show the maximum length (in bytes) of a target hardware watchpoint."), _("\
13610 Specify a negative limit for unlimited."),
13611 NULL
, NULL
, /* FIXME: i18n: The maximum
13612 length (in bytes) of a target
13613 hardware watchpoint is %s. */
13614 &remote_set_cmdlist
, &remote_show_cmdlist
);
13615 add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class
,
13616 &remote_hw_breakpoint_limit
, _("\
13617 Set the maximum number of target hardware breakpoints."), _("\
13618 Show the maximum number of target hardware breakpoints."), _("\
13619 Specify a negative limit for unlimited."),
13620 NULL
, NULL
, /* FIXME: i18n: The maximum
13621 number of target hardware
13622 breakpoints is %s. */
13623 &remote_set_cmdlist
, &remote_show_cmdlist
);
13625 add_setshow_zuinteger_cmd ("remoteaddresssize", class_obscure
,
13626 &remote_address_size
, _("\
13627 Set the maximum size of the address (in bits) in a memory packet."), _("\
13628 Show the maximum size of the address (in bits) in a memory packet."), NULL
,
13630 NULL
, /* FIXME: i18n: */
13631 &setlist
, &showlist
);
13633 init_all_packet_configs ();
13635 add_packet_config_cmd (&remote_protocol_packets
[PACKET_X
],
13636 "X", "binary-download", 1);
13638 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vCont
],
13639 "vCont", "verbose-resume", 0);
13641 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QPassSignals
],
13642 "QPassSignals", "pass-signals", 0);
13644 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QCatchSyscalls
],
13645 "QCatchSyscalls", "catch-syscalls", 0);
13647 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QProgramSignals
],
13648 "QProgramSignals", "program-signals", 0);
13650 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSymbol
],
13651 "qSymbol", "symbol-lookup", 0);
13653 add_packet_config_cmd (&remote_protocol_packets
[PACKET_P
],
13654 "P", "set-register", 1);
13656 add_packet_config_cmd (&remote_protocol_packets
[PACKET_p
],
13657 "p", "fetch-register", 1);
13659 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z0
],
13660 "Z0", "software-breakpoint", 0);
13662 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z1
],
13663 "Z1", "hardware-breakpoint", 0);
13665 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z2
],
13666 "Z2", "write-watchpoint", 0);
13668 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z3
],
13669 "Z3", "read-watchpoint", 0);
13671 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z4
],
13672 "Z4", "access-watchpoint", 0);
13674 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_auxv
],
13675 "qXfer:auxv:read", "read-aux-vector", 0);
13677 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_exec_file
],
13678 "qXfer:exec-file:read", "pid-to-exec-file", 0);
13680 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_features
],
13681 "qXfer:features:read", "target-features", 0);
13683 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_libraries
],
13684 "qXfer:libraries:read", "library-info", 0);
13686 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_libraries_svr4
],
13687 "qXfer:libraries-svr4:read", "library-info-svr4", 0);
13689 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_memory_map
],
13690 "qXfer:memory-map:read", "memory-map", 0);
13692 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_spu_read
],
13693 "qXfer:spu:read", "read-spu-object", 0);
13695 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_spu_write
],
13696 "qXfer:spu:write", "write-spu-object", 0);
13698 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_osdata
],
13699 "qXfer:osdata:read", "osdata", 0);
13701 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_threads
],
13702 "qXfer:threads:read", "threads", 0);
13704 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_siginfo_read
],
13705 "qXfer:siginfo:read", "read-siginfo-object", 0);
13707 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_siginfo_write
],
13708 "qXfer:siginfo:write", "write-siginfo-object", 0);
13710 add_packet_config_cmd
13711 (&remote_protocol_packets
[PACKET_qXfer_traceframe_info
],
13712 "qXfer:traceframe-info:read", "traceframe-info", 0);
13714 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_uib
],
13715 "qXfer:uib:read", "unwind-info-block", 0);
13717 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qGetTLSAddr
],
13718 "qGetTLSAddr", "get-thread-local-storage-address",
13721 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qGetTIBAddr
],
13722 "qGetTIBAddr", "get-thread-information-block-address",
13725 add_packet_config_cmd (&remote_protocol_packets
[PACKET_bc
],
13726 "bc", "reverse-continue", 0);
13728 add_packet_config_cmd (&remote_protocol_packets
[PACKET_bs
],
13729 "bs", "reverse-step", 0);
13731 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSupported
],
13732 "qSupported", "supported-packets", 0);
13734 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSearch_memory
],
13735 "qSearch:memory", "search-memory", 0);
13737 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qTStatus
],
13738 "qTStatus", "trace-status", 0);
13740 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_setfs
],
13741 "vFile:setfs", "hostio-setfs", 0);
13743 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_open
],
13744 "vFile:open", "hostio-open", 0);
13746 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_pread
],
13747 "vFile:pread", "hostio-pread", 0);
13749 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_pwrite
],
13750 "vFile:pwrite", "hostio-pwrite", 0);
13752 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_close
],
13753 "vFile:close", "hostio-close", 0);
13755 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_unlink
],
13756 "vFile:unlink", "hostio-unlink", 0);
13758 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_readlink
],
13759 "vFile:readlink", "hostio-readlink", 0);
13761 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_fstat
],
13762 "vFile:fstat", "hostio-fstat", 0);
13764 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vAttach
],
13765 "vAttach", "attach", 0);
13767 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vRun
],
13770 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QStartNoAckMode
],
13771 "QStartNoAckMode", "noack", 0);
13773 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vKill
],
13774 "vKill", "kill", 0);
13776 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qAttached
],
13777 "qAttached", "query-attached", 0);
13779 add_packet_config_cmd (&remote_protocol_packets
[PACKET_ConditionalTracepoints
],
13780 "ConditionalTracepoints",
13781 "conditional-tracepoints", 0);
13783 add_packet_config_cmd (&remote_protocol_packets
[PACKET_ConditionalBreakpoints
],
13784 "ConditionalBreakpoints",
13785 "conditional-breakpoints", 0);
13787 add_packet_config_cmd (&remote_protocol_packets
[PACKET_BreakpointCommands
],
13788 "BreakpointCommands",
13789 "breakpoint-commands", 0);
13791 add_packet_config_cmd (&remote_protocol_packets
[PACKET_FastTracepoints
],
13792 "FastTracepoints", "fast-tracepoints", 0);
13794 add_packet_config_cmd (&remote_protocol_packets
[PACKET_TracepointSource
],
13795 "TracepointSource", "TracepointSource", 0);
13797 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QAllow
],
13798 "QAllow", "allow", 0);
13800 add_packet_config_cmd (&remote_protocol_packets
[PACKET_StaticTracepoints
],
13801 "StaticTracepoints", "static-tracepoints", 0);
13803 add_packet_config_cmd (&remote_protocol_packets
[PACKET_InstallInTrace
],
13804 "InstallInTrace", "install-in-trace", 0);
13806 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_statictrace_read
],
13807 "qXfer:statictrace:read", "read-sdata-object", 0);
13809 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_fdpic
],
13810 "qXfer:fdpic:read", "read-fdpic-loadmap", 0);
13812 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QDisableRandomization
],
13813 "QDisableRandomization", "disable-randomization", 0);
13815 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QAgent
],
13816 "QAgent", "agent", 0);
13818 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QTBuffer_size
],
13819 "QTBuffer:size", "trace-buffer-size", 0);
13821 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Qbtrace_off
],
13822 "Qbtrace:off", "disable-btrace", 0);
13824 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Qbtrace_bts
],
13825 "Qbtrace:bts", "enable-btrace-bts", 0);
13827 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Qbtrace_pt
],
13828 "Qbtrace:pt", "enable-btrace-pt", 0);
13830 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_btrace
],
13831 "qXfer:btrace", "read-btrace", 0);
13833 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_btrace_conf
],
13834 "qXfer:btrace-conf", "read-btrace-conf", 0);
13836 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Qbtrace_conf_bts_size
],
13837 "Qbtrace-conf:bts:size", "btrace-conf-bts-size", 0);
13839 add_packet_config_cmd (&remote_protocol_packets
[PACKET_multiprocess_feature
],
13840 "multiprocess-feature", "multiprocess-feature", 0);
13842 add_packet_config_cmd (&remote_protocol_packets
[PACKET_swbreak_feature
],
13843 "swbreak-feature", "swbreak-feature", 0);
13845 add_packet_config_cmd (&remote_protocol_packets
[PACKET_hwbreak_feature
],
13846 "hwbreak-feature", "hwbreak-feature", 0);
13848 add_packet_config_cmd (&remote_protocol_packets
[PACKET_fork_event_feature
],
13849 "fork-event-feature", "fork-event-feature", 0);
13851 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vfork_event_feature
],
13852 "vfork-event-feature", "vfork-event-feature", 0);
13854 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Qbtrace_conf_pt_size
],
13855 "Qbtrace-conf:pt:size", "btrace-conf-pt-size", 0);
13857 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vContSupported
],
13858 "vContSupported", "verbose-resume-supported", 0);
13860 add_packet_config_cmd (&remote_protocol_packets
[PACKET_exec_event_feature
],
13861 "exec-event-feature", "exec-event-feature", 0);
13863 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vCtrlC
],
13864 "vCtrlC", "ctrl-c", 0);
13866 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QThreadEvents
],
13867 "QThreadEvents", "thread-events", 0);
13869 add_packet_config_cmd (&remote_protocol_packets
[PACKET_no_resumed
],
13870 "N stop reply", "no-resumed-stop-reply", 0);
13872 /* Assert that we've registered "set remote foo-packet" commands
13873 for all packet configs. */
13877 for (i
= 0; i
< PACKET_MAX
; i
++)
13879 /* Ideally all configs would have a command associated. Some
13880 still don't though. */
13885 case PACKET_QNonStop
:
13886 case PACKET_EnableDisableTracepoints_feature
:
13887 case PACKET_tracenz_feature
:
13888 case PACKET_DisconnectedTracing_feature
:
13889 case PACKET_augmented_libraries_svr4_read_feature
:
13891 /* Additions to this list need to be well justified:
13892 pre-existing packets are OK; new packets are not. */
13900 /* This catches both forgetting to add a config command, and
13901 forgetting to remove a packet from the exception list. */
13902 gdb_assert (excepted
== (remote_protocol_packets
[i
].name
== NULL
));
13906 /* Keep the old ``set remote Z-packet ...'' working. Each individual
13907 Z sub-packet has its own set and show commands, but users may
13908 have sets to this variable in their .gdbinit files (or in their
13910 add_setshow_auto_boolean_cmd ("Z-packet", class_obscure
,
13911 &remote_Z_packet_detect
, _("\
13912 Set use of remote protocol `Z' packets"), _("\
13913 Show use of remote protocol `Z' packets "), _("\
13914 When set, GDB will attempt to use the remote breakpoint and watchpoint\n\
13916 set_remote_protocol_Z_packet_cmd
,
13917 show_remote_protocol_Z_packet_cmd
,
13918 /* FIXME: i18n: Use of remote protocol
13919 `Z' packets is %s. */
13920 &remote_set_cmdlist
, &remote_show_cmdlist
);
13922 add_prefix_cmd ("remote", class_files
, remote_command
, _("\
13923 Manipulate files on the remote system\n\
13924 Transfer files to and from the remote target system."),
13925 &remote_cmdlist
, "remote ",
13926 0 /* allow-unknown */, &cmdlist
);
13928 add_cmd ("put", class_files
, remote_put_command
,
13929 _("Copy a local file to the remote system."),
13932 add_cmd ("get", class_files
, remote_get_command
,
13933 _("Copy a remote file to the local system."),
13936 add_cmd ("delete", class_files
, remote_delete_command
,
13937 _("Delete a remote file."),
13940 add_setshow_string_noescape_cmd ("exec-file", class_files
,
13941 &remote_exec_file_var
, _("\
13942 Set the remote pathname for \"run\""), _("\
13943 Show the remote pathname for \"run\""), NULL
,
13944 set_remote_exec_file
,
13945 show_remote_exec_file
,
13946 &remote_set_cmdlist
,
13947 &remote_show_cmdlist
);
13949 add_setshow_boolean_cmd ("range-stepping", class_run
,
13950 &use_range_stepping
, _("\
13951 Enable or disable range stepping."), _("\
13952 Show whether target-assisted range stepping is enabled."), _("\
13953 If on, and the target supports it, when stepping a source line, GDB\n\
13954 tells the target to step the corresponding range of addresses itself instead\n\
13955 of issuing multiple single-steps. This speeds up source level\n\
13956 stepping. If off, GDB always issues single-steps, even if range\n\
13957 stepping is supported by the target. The default is on."),
13958 set_range_stepping
,
13959 show_range_stepping
,
13963 /* Eventually initialize fileio. See fileio.c */
13964 initialize_remote_fileio (remote_set_cmdlist
, remote_show_cmdlist
);
13966 /* Take advantage of the fact that the TID field is not used, to tag
13967 special ptids with it set to != 0. */
13968 magic_null_ptid
= ptid_build (42000, -1, 1);
13969 not_sent_ptid
= ptid_build (42000, -2, 1);
13970 any_thread_ptid
= ptid_build (42000, 0, 1);
13972 target_buf_size
= 2048;
13973 target_buf
= (char *) xmalloc (target_buf_size
);