1 /* Remote target communications for serial-line targets in custom GDB protocol
3 Copyright (C) 1988-2015 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
20 /* See the GDB User Guide for details of the GDB remote protocol. */
30 /*#include "terminal.h" */
33 #include "gdb-stabs.h"
34 #include "gdbthread.h"
36 #include "remote-notif.h"
41 #include "cli/cli-decode.h"
42 #include "cli/cli-setshow.h"
43 #include "target-descriptions.h"
45 #include "filestuff.h"
50 #include "gdb_sys_time.h"
52 #include "event-loop.h"
53 #include "event-top.h"
59 #include "gdbcore.h" /* for exec_bfd */
61 #include "remote-fileio.h"
62 #include "gdb/fileio.h"
64 #include "xml-support.h"
66 #include "memory-map.h"
68 #include "tracepoint.h"
74 /* Temp hacks for tracepoint encoding migration. */
75 static char *target_buf
;
76 static long target_buf_size
;
78 /* Per-program-space data key. */
79 static const struct program_space_data
*remote_pspace_data
;
81 /* The variable registered as the control variable used by the
82 remote exec-file commands. While the remote exec-file setting is
83 per-program-space, the set/show machinery uses this as the
84 location of the remote exec-file value. */
85 static char *remote_exec_file_var
;
87 /* The size to align memory write packets, when practical. The protocol
88 does not guarantee any alignment, and gdb will generate short
89 writes and unaligned writes, but even as a best-effort attempt this
90 can improve bulk transfers. For instance, if a write is misaligned
91 relative to the target's data bus, the stub may need to make an extra
92 round trip fetching data from the target. This doesn't make a
93 huge difference, but it's easy to do, so we try to be helpful.
95 The alignment chosen is arbitrary; usually data bus width is
96 important here, not the possibly larger cache line size. */
97 enum { REMOTE_ALIGN_WRITES
= 16 };
99 /* Prototypes for local functions. */
100 static void async_cleanup_sigint_signal_handler (void *dummy
);
101 static int getpkt_sane (char **buf
, long *sizeof_buf
, int forever
);
102 static int getpkt_or_notif_sane (char **buf
, long *sizeof_buf
,
103 int forever
, int *is_notif
);
105 static void async_handle_remote_sigint (int);
106 static void async_handle_remote_sigint_twice (int);
108 static void remote_files_info (struct target_ops
*ignore
);
110 static void remote_prepare_to_store (struct target_ops
*self
,
111 struct regcache
*regcache
);
113 static void remote_open_1 (const char *, int, struct target_ops
*,
116 static void remote_close (struct target_ops
*self
);
120 static int remote_vkill (int pid
, struct remote_state
*rs
);
122 static void remote_mourn (struct target_ops
*ops
);
124 static void extended_remote_restart (void);
126 static void extended_remote_mourn (struct target_ops
*);
128 static void remote_send (char **buf
, long *sizeof_buf_p
);
130 static int readchar (int timeout
);
132 static void remote_serial_write (const char *str
, int len
);
134 static void remote_kill (struct target_ops
*ops
);
136 static int remote_can_async_p (struct target_ops
*);
138 static int remote_is_async_p (struct target_ops
*);
140 static void remote_async (struct target_ops
*ops
, int enable
);
142 static void remote_thread_events (struct target_ops
*ops
, int enable
);
144 static void sync_remote_interrupt_twice (int signo
);
146 static void interrupt_query (void);
148 static void set_general_thread (struct ptid ptid
);
149 static void set_continue_thread (struct ptid ptid
);
151 static void get_offsets (void);
153 static void skip_frame (void);
155 static long read_frame (char **buf_p
, long *sizeof_buf
);
157 static int hexnumlen (ULONGEST num
);
159 static void init_remote_ops (void);
161 static void init_extended_remote_ops (void);
163 static void remote_stop (struct target_ops
*self
, ptid_t
);
165 static int stubhex (int ch
);
167 static int hexnumstr (char *, ULONGEST
);
169 static int hexnumnstr (char *, ULONGEST
, int);
171 static CORE_ADDR
remote_address_masked (CORE_ADDR
);
173 static void print_packet (const char *);
175 static void compare_sections_command (char *, int);
177 static void packet_command (char *, int);
179 static int stub_unpack_int (char *buff
, int fieldlength
);
181 static ptid_t
remote_current_thread (ptid_t oldptid
);
183 static int putpkt_binary (const char *buf
, int cnt
);
185 static void check_binary_download (CORE_ADDR addr
);
187 struct packet_config
;
189 static void show_packet_config_cmd (struct packet_config
*config
);
191 static void show_remote_protocol_packet_cmd (struct ui_file
*file
,
193 struct cmd_list_element
*c
,
196 static char *write_ptid (char *buf
, const char *endbuf
, ptid_t ptid
);
197 static ptid_t
read_ptid (char *buf
, char **obuf
);
199 static void remote_set_permissions (struct target_ops
*self
);
201 static int remote_get_trace_status (struct target_ops
*self
,
202 struct trace_status
*ts
);
204 static int remote_upload_tracepoints (struct target_ops
*self
,
205 struct uploaded_tp
**utpp
);
207 static int remote_upload_trace_state_variables (struct target_ops
*self
,
208 struct uploaded_tsv
**utsvp
);
210 static void remote_query_supported (void);
212 static void remote_check_symbols (void);
214 void _initialize_remote (void);
217 static void stop_reply_xfree (struct stop_reply
*);
218 static void remote_parse_stop_reply (char *, struct stop_reply
*);
219 static void push_stop_reply (struct stop_reply
*);
220 static void discard_pending_stop_replies_in_queue (struct remote_state
*);
221 static int peek_stop_reply (ptid_t ptid
);
223 struct threads_listing_context
;
224 static void remove_new_fork_children (struct threads_listing_context
*);
226 static void remote_async_inferior_event_handler (gdb_client_data
);
228 static void remote_terminal_ours (struct target_ops
*self
);
230 static int remote_read_description_p (struct target_ops
*target
);
232 static void remote_console_output (char *msg
);
234 static int remote_supports_cond_breakpoints (struct target_ops
*self
);
236 static int remote_can_run_breakpoint_commands (struct target_ops
*self
);
238 static void remote_btrace_reset (void);
240 static int stop_reply_queue_length (void);
242 static void readahead_cache_invalidate (void);
246 static struct cmd_list_element
*remote_cmdlist
;
248 /* For "set remote" and "show remote". */
250 static struct cmd_list_element
*remote_set_cmdlist
;
251 static struct cmd_list_element
*remote_show_cmdlist
;
253 /* Stub vCont actions support.
255 Each field is a boolean flag indicating whether the stub reports
256 support for the corresponding action. */
258 struct vCont_action_support
273 /* Controls whether GDB is willing to use range stepping. */
275 static int use_range_stepping
= 1;
277 #define OPAQUETHREADBYTES 8
279 /* a 64 bit opaque identifier */
280 typedef unsigned char threadref
[OPAQUETHREADBYTES
];
282 /* About this many threadisds fit in a packet. */
284 #define MAXTHREADLISTRESULTS 32
286 /* Data for the vFile:pread readahead cache. */
288 struct readahead_cache
290 /* The file descriptor for the file that is being cached. -1 if the
294 /* The offset into the file that the cache buffer corresponds
298 /* The buffer holding the cache contents. */
300 /* The buffer's size. We try to read as much as fits into a packet
304 /* Cache hit and miss counters. */
309 /* Description of the remote protocol state for the currently
310 connected target. This is per-target state, and independent of the
311 selected architecture. */
315 /* A buffer to use for incoming packets, and its current size. The
316 buffer is grown dynamically for larger incoming packets.
317 Outgoing packets may also be constructed in this buffer.
318 BUF_SIZE is always at least REMOTE_PACKET_SIZE;
319 REMOTE_PACKET_SIZE should be used to limit the length of outgoing
324 /* True if we're going through initial connection setup (finding out
325 about the remote side's threads, relocating symbols, etc.). */
328 /* If we negotiated packet size explicitly (and thus can bypass
329 heuristics for the largest packet size that will not overflow
330 a buffer in the stub), this will be set to that packet size.
331 Otherwise zero, meaning to use the guessed size. */
332 long explicit_packet_size
;
334 /* remote_wait is normally called when the target is running and
335 waits for a stop reply packet. But sometimes we need to call it
336 when the target is already stopped. We can send a "?" packet
337 and have remote_wait read the response. Or, if we already have
338 the response, we can stash it in BUF and tell remote_wait to
339 skip calling getpkt. This flag is set when BUF contains a
340 stop reply packet and the target is not waiting. */
341 int cached_wait_status
;
343 /* True, if in no ack mode. That is, neither GDB nor the stub will
344 expect acks from each other. The connection is assumed to be
348 /* True if we're connected in extended remote mode. */
351 /* True if we resumed the target and we're waiting for the target to
352 stop. In the mean time, we can't start another command/query.
353 The remote server wouldn't be ready to process it, so we'd
354 timeout waiting for a reply that would never come and eventually
355 we'd close the connection. This can happen in asynchronous mode
356 because we allow GDB commands while the target is running. */
357 int waiting_for_stop_reply
;
359 /* The status of the stub support for the various vCont actions. */
360 struct vCont_action_support supports_vCont
;
362 /* Nonzero if the user has pressed Ctrl-C, but the target hasn't
363 responded to that. */
366 /* Descriptor for I/O to remote machine. Initialize it to NULL so that
367 remote_open knows that we don't have a file open when the program
369 struct serial
*remote_desc
;
371 /* These are the threads which we last sent to the remote system. The
372 TID member will be -1 for all or -2 for not sent yet. */
373 ptid_t general_thread
;
374 ptid_t continue_thread
;
376 /* This is the traceframe which we last selected on the remote system.
377 It will be -1 if no traceframe is selected. */
378 int remote_traceframe_number
;
380 char *last_pass_packet
;
382 /* The last QProgramSignals packet sent to the target. We bypass
383 sending a new program signals list down to the target if the new
384 packet is exactly the same as the last we sent. IOW, we only let
385 the target know about program signals list changes. */
386 char *last_program_signals_packet
;
388 enum gdb_signal last_sent_signal
;
392 char *finished_object
;
393 char *finished_annex
;
394 ULONGEST finished_offset
;
396 /* Should we try the 'ThreadInfo' query packet?
398 This variable (NOT available to the user: auto-detect only!)
399 determines whether GDB will use the new, simpler "ThreadInfo"
400 query or the older, more complex syntax for thread queries.
401 This is an auto-detect variable (set to true at each connect,
402 and set to false when the target fails to recognize it). */
403 int use_threadinfo_query
;
404 int use_threadextra_query
;
406 threadref echo_nextthread
;
407 threadref nextthread
;
408 threadref resultthreadlist
[MAXTHREADLISTRESULTS
];
410 /* The state of remote notification. */
411 struct remote_notif_state
*notif_state
;
413 /* The branch trace configuration. */
414 struct btrace_config btrace_config
;
416 /* The argument to the last "vFile:setfs:" packet we sent, used
417 to avoid sending repeated unnecessary "vFile:setfs:" packets.
418 Initialized to -1 to indicate that no "vFile:setfs:" packet
419 has yet been sent. */
422 /* A readahead cache for vFile:pread. Often, reading a binary
423 involves a sequence of small reads. E.g., when parsing an ELF
424 file. A readahead cache helps mostly the case of remote
425 debugging on a connection with higher latency, due to the
426 request/reply nature of the RSP. We only cache data for a single
427 file descriptor at a time. */
428 struct readahead_cache readahead_cache
;
431 /* Private data that we'll store in (struct thread_info)->private. */
432 struct private_thread_info
438 /* Whether the target stopped for a breakpoint/watchpoint. */
439 enum target_stop_reason stop_reason
;
441 /* This is set to the data address of the access causing the target
442 to stop for a watchpoint. */
443 CORE_ADDR watch_data_address
;
447 free_private_thread_info (struct private_thread_info
*info
)
454 /* This data could be associated with a target, but we do not always
455 have access to the current target when we need it, so for now it is
456 static. This will be fine for as long as only one target is in use
458 static struct remote_state
*remote_state
;
460 static struct remote_state
*
461 get_remote_state_raw (void)
466 /* Allocate a new struct remote_state with xmalloc, initialize it, and
469 static struct remote_state
*
470 new_remote_state (void)
472 struct remote_state
*result
= XCNEW (struct remote_state
);
474 /* The default buffer size is unimportant; it will be expanded
475 whenever a larger buffer is needed. */
476 result
->buf_size
= 400;
477 result
->buf
= (char *) xmalloc (result
->buf_size
);
478 result
->remote_traceframe_number
= -1;
479 result
->last_sent_signal
= GDB_SIGNAL_0
;
485 /* Description of the remote protocol for a given architecture. */
489 long offset
; /* Offset into G packet. */
490 long regnum
; /* GDB's internal register number. */
491 LONGEST pnum
; /* Remote protocol register number. */
492 int in_g_packet
; /* Always part of G packet. */
493 /* long size in bytes; == register_size (target_gdbarch (), regnum);
495 /* char *name; == gdbarch_register_name (target_gdbarch (), regnum);
499 struct remote_arch_state
501 /* Description of the remote protocol registers. */
502 long sizeof_g_packet
;
504 /* Description of the remote protocol registers indexed by REGNUM
505 (making an array gdbarch_num_regs in size). */
506 struct packet_reg
*regs
;
508 /* This is the size (in chars) of the first response to the ``g''
509 packet. It is used as a heuristic when determining the maximum
510 size of memory-read and memory-write packets. A target will
511 typically only reserve a buffer large enough to hold the ``g''
512 packet. The size does not include packet overhead (headers and
514 long actual_register_packet_size
;
516 /* This is the maximum size (in chars) of a non read/write packet.
517 It is also used as a cap on the size of read/write packets. */
518 long remote_packet_size
;
521 /* Utility: generate error from an incoming stub packet. */
523 trace_error (char *buf
)
526 return; /* not an error msg */
529 case '1': /* malformed packet error */
530 if (*++buf
== '0') /* general case: */
531 error (_("remote.c: error in outgoing packet."));
533 error (_("remote.c: error in outgoing packet at field #%ld."),
534 strtol (buf
, NULL
, 16));
536 error (_("Target returns error code '%s'."), buf
);
540 /* Utility: wait for reply from stub, while accepting "O" packets. */
542 remote_get_noisy_reply (char **buf_p
,
545 do /* Loop on reply from remote stub. */
549 QUIT
; /* Allow user to bail out with ^C. */
550 getpkt (buf_p
, sizeof_buf
, 0);
554 else if (startswith (buf
, "qRelocInsn:"))
557 CORE_ADDR from
, to
, org_to
;
559 int adjusted_size
= 0;
562 p
= buf
+ strlen ("qRelocInsn:");
563 pp
= unpack_varlen_hex (p
, &ul
);
565 error (_("invalid qRelocInsn packet: %s"), buf
);
569 unpack_varlen_hex (p
, &ul
);
576 gdbarch_relocate_instruction (target_gdbarch (), &to
, from
);
579 CATCH (ex
, RETURN_MASK_ALL
)
581 if (ex
.error
== MEMORY_ERROR
)
583 /* Propagate memory errors silently back to the
584 target. The stub may have limited the range of
585 addresses we can write to, for example. */
589 /* Something unexpectedly bad happened. Be verbose
590 so we can tell what, and propagate the error back
591 to the stub, so it doesn't get stuck waiting for
593 exception_fprintf (gdb_stderr
, ex
,
594 _("warning: relocating instruction: "));
602 adjusted_size
= to
- org_to
;
604 xsnprintf (buf
, *sizeof_buf
, "qRelocInsn:%x", adjusted_size
);
608 else if (buf
[0] == 'O' && buf
[1] != 'K')
609 remote_console_output (buf
+ 1); /* 'O' message from stub */
611 return buf
; /* Here's the actual reply. */
616 /* Handle for retreving the remote protocol data from gdbarch. */
617 static struct gdbarch_data
*remote_gdbarch_data_handle
;
619 static struct remote_arch_state
*
620 get_remote_arch_state (void)
622 gdb_assert (target_gdbarch () != NULL
);
623 return ((struct remote_arch_state
*)
624 gdbarch_data (target_gdbarch (), remote_gdbarch_data_handle
));
627 /* Fetch the global remote target state. */
629 static struct remote_state
*
630 get_remote_state (void)
632 /* Make sure that the remote architecture state has been
633 initialized, because doing so might reallocate rs->buf. Any
634 function which calls getpkt also needs to be mindful of changes
635 to rs->buf, but this call limits the number of places which run
637 get_remote_arch_state ();
639 return get_remote_state_raw ();
642 /* Cleanup routine for the remote module's pspace data. */
645 remote_pspace_data_cleanup (struct program_space
*pspace
, void *arg
)
647 char *remote_exec_file
= (char *) arg
;
649 xfree (remote_exec_file
);
652 /* Fetch the remote exec-file from the current program space. */
655 get_remote_exec_file (void)
657 char *remote_exec_file
;
660 = (char *) program_space_data (current_program_space
,
662 if (remote_exec_file
== NULL
)
665 return remote_exec_file
;
668 /* Set the remote exec file for PSPACE. */
671 set_pspace_remote_exec_file (struct program_space
*pspace
,
672 char *remote_exec_file
)
674 char *old_file
= (char *) program_space_data (pspace
, remote_pspace_data
);
677 set_program_space_data (pspace
, remote_pspace_data
,
678 xstrdup (remote_exec_file
));
681 /* The "set/show remote exec-file" set command hook. */
684 set_remote_exec_file (char *ignored
, int from_tty
,
685 struct cmd_list_element
*c
)
687 gdb_assert (remote_exec_file_var
!= NULL
);
688 set_pspace_remote_exec_file (current_program_space
, remote_exec_file_var
);
691 /* The "set/show remote exec-file" show command hook. */
694 show_remote_exec_file (struct ui_file
*file
, int from_tty
,
695 struct cmd_list_element
*cmd
, const char *value
)
697 fprintf_filtered (file
, "%s\n", remote_exec_file_var
);
701 compare_pnums (const void *lhs_
, const void *rhs_
)
703 const struct packet_reg
* const *lhs
704 = (const struct packet_reg
* const *) lhs_
;
705 const struct packet_reg
* const *rhs
706 = (const struct packet_reg
* const *) rhs_
;
708 if ((*lhs
)->pnum
< (*rhs
)->pnum
)
710 else if ((*lhs
)->pnum
== (*rhs
)->pnum
)
717 map_regcache_remote_table (struct gdbarch
*gdbarch
, struct packet_reg
*regs
)
719 int regnum
, num_remote_regs
, offset
;
720 struct packet_reg
**remote_regs
;
722 for (regnum
= 0; regnum
< gdbarch_num_regs (gdbarch
); regnum
++)
724 struct packet_reg
*r
= ®s
[regnum
];
726 if (register_size (gdbarch
, regnum
) == 0)
727 /* Do not try to fetch zero-sized (placeholder) registers. */
730 r
->pnum
= gdbarch_remote_register_number (gdbarch
, regnum
);
735 /* Define the g/G packet format as the contents of each register
736 with a remote protocol number, in order of ascending protocol
739 remote_regs
= XALLOCAVEC (struct packet_reg
*, gdbarch_num_regs (gdbarch
));
740 for (num_remote_regs
= 0, regnum
= 0;
741 regnum
< gdbarch_num_regs (gdbarch
);
743 if (regs
[regnum
].pnum
!= -1)
744 remote_regs
[num_remote_regs
++] = ®s
[regnum
];
746 qsort (remote_regs
, num_remote_regs
, sizeof (struct packet_reg
*),
749 for (regnum
= 0, offset
= 0; regnum
< num_remote_regs
; regnum
++)
751 remote_regs
[regnum
]->in_g_packet
= 1;
752 remote_regs
[regnum
]->offset
= offset
;
753 offset
+= register_size (gdbarch
, remote_regs
[regnum
]->regnum
);
759 /* Given the architecture described by GDBARCH, return the remote
760 protocol register's number and the register's offset in the g/G
761 packets of GDB register REGNUM, in PNUM and POFFSET respectively.
762 If the target does not have a mapping for REGNUM, return false,
763 otherwise, return true. */
766 remote_register_number_and_offset (struct gdbarch
*gdbarch
, int regnum
,
767 int *pnum
, int *poffset
)
770 struct packet_reg
*regs
;
771 struct cleanup
*old_chain
;
773 gdb_assert (regnum
< gdbarch_num_regs (gdbarch
));
775 regs
= XCNEWVEC (struct packet_reg
, gdbarch_num_regs (gdbarch
));
776 old_chain
= make_cleanup (xfree
, regs
);
778 sizeof_g_packet
= map_regcache_remote_table (gdbarch
, regs
);
780 *pnum
= regs
[regnum
].pnum
;
781 *poffset
= regs
[regnum
].offset
;
783 do_cleanups (old_chain
);
789 init_remote_state (struct gdbarch
*gdbarch
)
791 struct remote_state
*rs
= get_remote_state_raw ();
792 struct remote_arch_state
*rsa
;
794 rsa
= GDBARCH_OBSTACK_ZALLOC (gdbarch
, struct remote_arch_state
);
796 /* Use the architecture to build a regnum<->pnum table, which will be
797 1:1 unless a feature set specifies otherwise. */
798 rsa
->regs
= GDBARCH_OBSTACK_CALLOC (gdbarch
,
799 gdbarch_num_regs (gdbarch
),
802 /* Record the maximum possible size of the g packet - it may turn out
804 rsa
->sizeof_g_packet
= map_regcache_remote_table (gdbarch
, rsa
->regs
);
806 /* Default maximum number of characters in a packet body. Many
807 remote stubs have a hardwired buffer size of 400 bytes
808 (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used
809 as the maximum packet-size to ensure that the packet and an extra
810 NUL character can always fit in the buffer. This stops GDB
811 trashing stubs that try to squeeze an extra NUL into what is
812 already a full buffer (As of 1999-12-04 that was most stubs). */
813 rsa
->remote_packet_size
= 400 - 1;
815 /* This one is filled in when a ``g'' packet is received. */
816 rsa
->actual_register_packet_size
= 0;
818 /* Should rsa->sizeof_g_packet needs more space than the
819 default, adjust the size accordingly. Remember that each byte is
820 encoded as two characters. 32 is the overhead for the packet
821 header / footer. NOTE: cagney/1999-10-26: I suspect that 8
822 (``$NN:G...#NN'') is a better guess, the below has been padded a
824 if (rsa
->sizeof_g_packet
> ((rsa
->remote_packet_size
- 32) / 2))
825 rsa
->remote_packet_size
= (rsa
->sizeof_g_packet
* 2 + 32);
827 /* Make sure that the packet buffer is plenty big enough for
828 this architecture. */
829 if (rs
->buf_size
< rsa
->remote_packet_size
)
831 rs
->buf_size
= 2 * rsa
->remote_packet_size
;
832 rs
->buf
= (char *) xrealloc (rs
->buf
, rs
->buf_size
);
838 /* Return the current allowed size of a remote packet. This is
839 inferred from the current architecture, and should be used to
840 limit the length of outgoing packets. */
842 get_remote_packet_size (void)
844 struct remote_state
*rs
= get_remote_state ();
845 struct remote_arch_state
*rsa
= get_remote_arch_state ();
847 if (rs
->explicit_packet_size
)
848 return rs
->explicit_packet_size
;
850 return rsa
->remote_packet_size
;
853 static struct packet_reg
*
854 packet_reg_from_regnum (struct remote_arch_state
*rsa
, long regnum
)
856 if (regnum
< 0 && regnum
>= gdbarch_num_regs (target_gdbarch ()))
860 struct packet_reg
*r
= &rsa
->regs
[regnum
];
862 gdb_assert (r
->regnum
== regnum
);
867 static struct packet_reg
*
868 packet_reg_from_pnum (struct remote_arch_state
*rsa
, LONGEST pnum
)
872 for (i
= 0; i
< gdbarch_num_regs (target_gdbarch ()); i
++)
874 struct packet_reg
*r
= &rsa
->regs
[i
];
882 static struct target_ops remote_ops
;
884 static struct target_ops extended_remote_ops
;
886 /* FIXME: cagney/1999-09-23: Even though getpkt was called with
887 ``forever'' still use the normal timeout mechanism. This is
888 currently used by the ASYNC code to guarentee that target reads
889 during the initial connect always time-out. Once getpkt has been
890 modified to return a timeout indication and, in turn
891 remote_wait()/wait_for_inferior() have gained a timeout parameter
893 static int wait_forever_enabled_p
= 1;
895 /* Allow the user to specify what sequence to send to the remote
896 when he requests a program interruption: Although ^C is usually
897 what remote systems expect (this is the default, here), it is
898 sometimes preferable to send a break. On other systems such
899 as the Linux kernel, a break followed by g, which is Magic SysRq g
900 is required in order to interrupt the execution. */
901 const char interrupt_sequence_control_c
[] = "Ctrl-C";
902 const char interrupt_sequence_break
[] = "BREAK";
903 const char interrupt_sequence_break_g
[] = "BREAK-g";
904 static const char *const interrupt_sequence_modes
[] =
906 interrupt_sequence_control_c
,
907 interrupt_sequence_break
,
908 interrupt_sequence_break_g
,
911 static const char *interrupt_sequence_mode
= interrupt_sequence_control_c
;
914 show_interrupt_sequence (struct ui_file
*file
, int from_tty
,
915 struct cmd_list_element
*c
,
918 if (interrupt_sequence_mode
== interrupt_sequence_control_c
)
919 fprintf_filtered (file
,
920 _("Send the ASCII ETX character (Ctrl-c) "
921 "to the remote target to interrupt the "
922 "execution of the program.\n"));
923 else if (interrupt_sequence_mode
== interrupt_sequence_break
)
924 fprintf_filtered (file
,
925 _("send a break signal to the remote target "
926 "to interrupt the execution of the program.\n"));
927 else if (interrupt_sequence_mode
== interrupt_sequence_break_g
)
928 fprintf_filtered (file
,
929 _("Send a break signal and 'g' a.k.a. Magic SysRq g to "
930 "the remote target to interrupt the execution "
931 "of Linux kernel.\n"));
933 internal_error (__FILE__
, __LINE__
,
934 _("Invalid value for interrupt_sequence_mode: %s."),
935 interrupt_sequence_mode
);
938 /* This boolean variable specifies whether interrupt_sequence is sent
939 to the remote target when gdb connects to it.
940 This is mostly needed when you debug the Linux kernel: The Linux kernel
941 expects BREAK g which is Magic SysRq g for connecting gdb. */
942 static int interrupt_on_connect
= 0;
944 /* This variable is used to implement the "set/show remotebreak" commands.
945 Since these commands are now deprecated in favor of "set/show remote
946 interrupt-sequence", it no longer has any effect on the code. */
947 static int remote_break
;
950 set_remotebreak (char *args
, int from_tty
, struct cmd_list_element
*c
)
953 interrupt_sequence_mode
= interrupt_sequence_break
;
955 interrupt_sequence_mode
= interrupt_sequence_control_c
;
959 show_remotebreak (struct ui_file
*file
, int from_tty
,
960 struct cmd_list_element
*c
,
965 /* This variable sets the number of bits in an address that are to be
966 sent in a memory ("M" or "m") packet. Normally, after stripping
967 leading zeros, the entire address would be sent. This variable
968 restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The
969 initial implementation of remote.c restricted the address sent in
970 memory packets to ``host::sizeof long'' bytes - (typically 32
971 bits). Consequently, for 64 bit targets, the upper 32 bits of an
972 address was never sent. Since fixing this bug may cause a break in
973 some remote targets this variable is principly provided to
974 facilitate backward compatibility. */
976 static unsigned int remote_address_size
;
978 /* Temporary to track who currently owns the terminal. See
979 remote_terminal_* for more details. */
981 static int remote_async_terminal_ours_p
;
984 /* User configurable variables for the number of characters in a
985 memory read/write packet. MIN (rsa->remote_packet_size,
986 rsa->sizeof_g_packet) is the default. Some targets need smaller
987 values (fifo overruns, et.al.) and some users need larger values
988 (speed up transfers). The variables ``preferred_*'' (the user
989 request), ``current_*'' (what was actually set) and ``forced_*''
990 (Positive - a soft limit, negative - a hard limit). */
992 struct memory_packet_config
999 /* The default max memory-write-packet-size. The 16k is historical.
1000 (It came from older GDB's using alloca for buffers and the
1001 knowledge (folklore?) that some hosts don't cope very well with
1002 large alloca calls.) */
1003 #define DEFAULT_MAX_MEMORY_PACKET_SIZE 16384
1005 /* The minimum remote packet size for memory transfers. Ensures we
1006 can write at least one byte. */
1007 #define MIN_MEMORY_PACKET_SIZE 20
1009 /* Compute the current size of a read/write packet. Since this makes
1010 use of ``actual_register_packet_size'' the computation is dynamic. */
1013 get_memory_packet_size (struct memory_packet_config
*config
)
1015 struct remote_state
*rs
= get_remote_state ();
1016 struct remote_arch_state
*rsa
= get_remote_arch_state ();
1019 if (config
->fixed_p
)
1021 if (config
->size
<= 0)
1022 what_they_get
= DEFAULT_MAX_MEMORY_PACKET_SIZE
;
1024 what_they_get
= config
->size
;
1028 what_they_get
= get_remote_packet_size ();
1029 /* Limit the packet to the size specified by the user. */
1030 if (config
->size
> 0
1031 && what_they_get
> config
->size
)
1032 what_they_get
= config
->size
;
1034 /* Limit it to the size of the targets ``g'' response unless we have
1035 permission from the stub to use a larger packet size. */
1036 if (rs
->explicit_packet_size
== 0
1037 && rsa
->actual_register_packet_size
> 0
1038 && what_they_get
> rsa
->actual_register_packet_size
)
1039 what_they_get
= rsa
->actual_register_packet_size
;
1041 if (what_they_get
< MIN_MEMORY_PACKET_SIZE
)
1042 what_they_get
= MIN_MEMORY_PACKET_SIZE
;
1044 /* Make sure there is room in the global buffer for this packet
1045 (including its trailing NUL byte). */
1046 if (rs
->buf_size
< what_they_get
+ 1)
1048 rs
->buf_size
= 2 * what_they_get
;
1049 rs
->buf
= (char *) xrealloc (rs
->buf
, 2 * what_they_get
);
1052 return what_they_get
;
1055 /* Update the size of a read/write packet. If they user wants
1056 something really big then do a sanity check. */
1059 set_memory_packet_size (char *args
, struct memory_packet_config
*config
)
1061 int fixed_p
= config
->fixed_p
;
1062 long size
= config
->size
;
1065 error (_("Argument required (integer, `fixed' or `limited')."));
1066 else if (strcmp (args
, "hard") == 0
1067 || strcmp (args
, "fixed") == 0)
1069 else if (strcmp (args
, "soft") == 0
1070 || strcmp (args
, "limit") == 0)
1076 size
= strtoul (args
, &end
, 0);
1078 error (_("Invalid %s (bad syntax)."), config
->name
);
1080 /* Instead of explicitly capping the size of a packet to or
1081 disallowing it, the user is allowed to set the size to
1082 something arbitrarily large. */
1085 /* So that the query shows the correct value. */
1087 size
= DEFAULT_MAX_MEMORY_PACKET_SIZE
;
1090 if (fixed_p
&& !config
->fixed_p
)
1092 if (! query (_("The target may not be able to correctly handle a %s\n"
1093 "of %ld bytes. Change the packet size? "),
1094 config
->name
, size
))
1095 error (_("Packet size not changed."));
1097 /* Update the config. */
1098 config
->fixed_p
= fixed_p
;
1099 config
->size
= size
;
1103 show_memory_packet_size (struct memory_packet_config
*config
)
1105 printf_filtered (_("The %s is %ld. "), config
->name
, config
->size
);
1106 if (config
->fixed_p
)
1107 printf_filtered (_("Packets are fixed at %ld bytes.\n"),
1108 get_memory_packet_size (config
));
1110 printf_filtered (_("Packets are limited to %ld bytes.\n"),
1111 get_memory_packet_size (config
));
1114 static struct memory_packet_config memory_write_packet_config
=
1116 "memory-write-packet-size",
1120 set_memory_write_packet_size (char *args
, int from_tty
)
1122 set_memory_packet_size (args
, &memory_write_packet_config
);
1126 show_memory_write_packet_size (char *args
, int from_tty
)
1128 show_memory_packet_size (&memory_write_packet_config
);
1132 get_memory_write_packet_size (void)
1134 return get_memory_packet_size (&memory_write_packet_config
);
1137 static struct memory_packet_config memory_read_packet_config
=
1139 "memory-read-packet-size",
1143 set_memory_read_packet_size (char *args
, int from_tty
)
1145 set_memory_packet_size (args
, &memory_read_packet_config
);
1149 show_memory_read_packet_size (char *args
, int from_tty
)
1151 show_memory_packet_size (&memory_read_packet_config
);
1155 get_memory_read_packet_size (void)
1157 long size
= get_memory_packet_size (&memory_read_packet_config
);
1159 /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an
1160 extra buffer size argument before the memory read size can be
1161 increased beyond this. */
1162 if (size
> get_remote_packet_size ())
1163 size
= get_remote_packet_size ();
1168 /* Generic configuration support for packets the stub optionally
1169 supports. Allows the user to specify the use of the packet as well
1170 as allowing GDB to auto-detect support in the remote stub. */
1174 PACKET_SUPPORT_UNKNOWN
= 0,
1179 struct packet_config
1184 /* If auto, GDB auto-detects support for this packet or feature,
1185 either through qSupported, or by trying the packet and looking
1186 at the response. If true, GDB assumes the target supports this
1187 packet. If false, the packet is disabled. Configs that don't
1188 have an associated command always have this set to auto. */
1189 enum auto_boolean detect
;
1191 /* Does the target support this packet? */
1192 enum packet_support support
;
1195 /* Analyze a packet's return value and update the packet config
1205 static enum packet_support
packet_config_support (struct packet_config
*config
);
1206 static enum packet_support
packet_support (int packet
);
1209 show_packet_config_cmd (struct packet_config
*config
)
1211 char *support
= "internal-error";
1213 switch (packet_config_support (config
))
1216 support
= "enabled";
1218 case PACKET_DISABLE
:
1219 support
= "disabled";
1221 case PACKET_SUPPORT_UNKNOWN
:
1222 support
= "unknown";
1225 switch (config
->detect
)
1227 case AUTO_BOOLEAN_AUTO
:
1228 printf_filtered (_("Support for the `%s' packet "
1229 "is auto-detected, currently %s.\n"),
1230 config
->name
, support
);
1232 case AUTO_BOOLEAN_TRUE
:
1233 case AUTO_BOOLEAN_FALSE
:
1234 printf_filtered (_("Support for the `%s' packet is currently %s.\n"),
1235 config
->name
, support
);
1241 add_packet_config_cmd (struct packet_config
*config
, const char *name
,
1242 const char *title
, int legacy
)
1248 config
->name
= name
;
1249 config
->title
= title
;
1250 set_doc
= xstrprintf ("Set use of remote protocol `%s' (%s) packet",
1252 show_doc
= xstrprintf ("Show current use of remote "
1253 "protocol `%s' (%s) packet",
1255 /* set/show TITLE-packet {auto,on,off} */
1256 cmd_name
= xstrprintf ("%s-packet", title
);
1257 add_setshow_auto_boolean_cmd (cmd_name
, class_obscure
,
1258 &config
->detect
, set_doc
,
1259 show_doc
, NULL
, /* help_doc */
1261 show_remote_protocol_packet_cmd
,
1262 &remote_set_cmdlist
, &remote_show_cmdlist
);
1263 /* The command code copies the documentation strings. */
1266 /* set/show remote NAME-packet {auto,on,off} -- legacy. */
1271 legacy_name
= xstrprintf ("%s-packet", name
);
1272 add_alias_cmd (legacy_name
, cmd_name
, class_obscure
, 0,
1273 &remote_set_cmdlist
);
1274 add_alias_cmd (legacy_name
, cmd_name
, class_obscure
, 0,
1275 &remote_show_cmdlist
);
1279 static enum packet_result
1280 packet_check_result (const char *buf
)
1284 /* The stub recognized the packet request. Check that the
1285 operation succeeded. */
1287 && isxdigit (buf
[1]) && isxdigit (buf
[2])
1289 /* "Enn" - definitly an error. */
1290 return PACKET_ERROR
;
1292 /* Always treat "E." as an error. This will be used for
1293 more verbose error messages, such as E.memtypes. */
1294 if (buf
[0] == 'E' && buf
[1] == '.')
1295 return PACKET_ERROR
;
1297 /* The packet may or may not be OK. Just assume it is. */
1301 /* The stub does not support the packet. */
1302 return PACKET_UNKNOWN
;
1305 static enum packet_result
1306 packet_ok (const char *buf
, struct packet_config
*config
)
1308 enum packet_result result
;
1310 if (config
->detect
!= AUTO_BOOLEAN_TRUE
1311 && config
->support
== PACKET_DISABLE
)
1312 internal_error (__FILE__
, __LINE__
,
1313 _("packet_ok: attempt to use a disabled packet"));
1315 result
= packet_check_result (buf
);
1320 /* The stub recognized the packet request. */
1321 if (config
->support
== PACKET_SUPPORT_UNKNOWN
)
1324 fprintf_unfiltered (gdb_stdlog
,
1325 "Packet %s (%s) is supported\n",
1326 config
->name
, config
->title
);
1327 config
->support
= PACKET_ENABLE
;
1330 case PACKET_UNKNOWN
:
1331 /* The stub does not support the packet. */
1332 if (config
->detect
== AUTO_BOOLEAN_AUTO
1333 && config
->support
== PACKET_ENABLE
)
1335 /* If the stub previously indicated that the packet was
1336 supported then there is a protocol error. */
1337 error (_("Protocol error: %s (%s) conflicting enabled responses."),
1338 config
->name
, config
->title
);
1340 else if (config
->detect
== AUTO_BOOLEAN_TRUE
)
1342 /* The user set it wrong. */
1343 error (_("Enabled packet %s (%s) not recognized by stub"),
1344 config
->name
, config
->title
);
1348 fprintf_unfiltered (gdb_stdlog
,
1349 "Packet %s (%s) is NOT supported\n",
1350 config
->name
, config
->title
);
1351 config
->support
= PACKET_DISABLE
;
1372 PACKET_vFile_pwrite
,
1374 PACKET_vFile_unlink
,
1375 PACKET_vFile_readlink
,
1378 PACKET_qXfer_features
,
1379 PACKET_qXfer_exec_file
,
1380 PACKET_qXfer_libraries
,
1381 PACKET_qXfer_libraries_svr4
,
1382 PACKET_qXfer_memory_map
,
1383 PACKET_qXfer_spu_read
,
1384 PACKET_qXfer_spu_write
,
1385 PACKET_qXfer_osdata
,
1386 PACKET_qXfer_threads
,
1387 PACKET_qXfer_statictrace_read
,
1388 PACKET_qXfer_traceframe_info
,
1394 PACKET_QPassSignals
,
1395 PACKET_QProgramSignals
,
1397 PACKET_qSearch_memory
,
1400 PACKET_QStartNoAckMode
,
1402 PACKET_qXfer_siginfo_read
,
1403 PACKET_qXfer_siginfo_write
,
1406 /* Support for conditional tracepoints. */
1407 PACKET_ConditionalTracepoints
,
1409 /* Support for target-side breakpoint conditions. */
1410 PACKET_ConditionalBreakpoints
,
1412 /* Support for target-side breakpoint commands. */
1413 PACKET_BreakpointCommands
,
1415 /* Support for fast tracepoints. */
1416 PACKET_FastTracepoints
,
1418 /* Support for static tracepoints. */
1419 PACKET_StaticTracepoints
,
1421 /* Support for installing tracepoints while a trace experiment is
1423 PACKET_InstallInTrace
,
1427 PACKET_TracepointSource
,
1430 PACKET_QDisableRandomization
,
1432 PACKET_QTBuffer_size
,
1436 PACKET_qXfer_btrace
,
1438 /* Support for the QNonStop packet. */
1441 /* Support for the QThreadEvents packet. */
1442 PACKET_QThreadEvents
,
1444 /* Support for multi-process extensions. */
1445 PACKET_multiprocess_feature
,
1447 /* Support for enabling and disabling tracepoints while a trace
1448 experiment is running. */
1449 PACKET_EnableDisableTracepoints_feature
,
1451 /* Support for collecting strings using the tracenz bytecode. */
1452 PACKET_tracenz_feature
,
1454 /* Support for continuing to run a trace experiment while GDB is
1456 PACKET_DisconnectedTracing_feature
,
1458 /* Support for qXfer:libraries-svr4:read with a non-empty annex. */
1459 PACKET_augmented_libraries_svr4_read_feature
,
1461 /* Support for the qXfer:btrace-conf:read packet. */
1462 PACKET_qXfer_btrace_conf
,
1464 /* Support for the Qbtrace-conf:bts:size packet. */
1465 PACKET_Qbtrace_conf_bts_size
,
1467 /* Support for swbreak+ feature. */
1468 PACKET_swbreak_feature
,
1470 /* Support for hwbreak+ feature. */
1471 PACKET_hwbreak_feature
,
1473 /* Support for fork events. */
1474 PACKET_fork_event_feature
,
1476 /* Support for vfork events. */
1477 PACKET_vfork_event_feature
,
1479 /* Support for the Qbtrace-conf:pt:size packet. */
1480 PACKET_Qbtrace_conf_pt_size
,
1482 /* Support for exec events. */
1483 PACKET_exec_event_feature
,
1485 /* Support for query supported vCont actions. */
1486 PACKET_vContSupported
,
1488 /* Support remote CTRL-C. */
1491 /* Support TARGET_WAITKIND_NO_RESUMED. */
1497 static struct packet_config remote_protocol_packets
[PACKET_MAX
];
1499 /* Returns the packet's corresponding "set remote foo-packet" command
1500 state. See struct packet_config for more details. */
1502 static enum auto_boolean
1503 packet_set_cmd_state (int packet
)
1505 return remote_protocol_packets
[packet
].detect
;
1508 /* Returns whether a given packet or feature is supported. This takes
1509 into account the state of the corresponding "set remote foo-packet"
1510 command, which may be used to bypass auto-detection. */
1512 static enum packet_support
1513 packet_config_support (struct packet_config
*config
)
1515 switch (config
->detect
)
1517 case AUTO_BOOLEAN_TRUE
:
1518 return PACKET_ENABLE
;
1519 case AUTO_BOOLEAN_FALSE
:
1520 return PACKET_DISABLE
;
1521 case AUTO_BOOLEAN_AUTO
:
1522 return config
->support
;
1524 gdb_assert_not_reached (_("bad switch"));
1528 /* Same as packet_config_support, but takes the packet's enum value as
1531 static enum packet_support
1532 packet_support (int packet
)
1534 struct packet_config
*config
= &remote_protocol_packets
[packet
];
1536 return packet_config_support (config
);
1540 show_remote_protocol_packet_cmd (struct ui_file
*file
, int from_tty
,
1541 struct cmd_list_element
*c
,
1544 struct packet_config
*packet
;
1546 for (packet
= remote_protocol_packets
;
1547 packet
< &remote_protocol_packets
[PACKET_MAX
];
1550 if (&packet
->detect
== c
->var
)
1552 show_packet_config_cmd (packet
);
1556 internal_error (__FILE__
, __LINE__
, _("Could not find config for %s"),
1560 /* Should we try one of the 'Z' requests? */
1564 Z_PACKET_SOFTWARE_BP
,
1565 Z_PACKET_HARDWARE_BP
,
1572 /* For compatibility with older distributions. Provide a ``set remote
1573 Z-packet ...'' command that updates all the Z packet types. */
1575 static enum auto_boolean remote_Z_packet_detect
;
1578 set_remote_protocol_Z_packet_cmd (char *args
, int from_tty
,
1579 struct cmd_list_element
*c
)
1583 for (i
= 0; i
< NR_Z_PACKET_TYPES
; i
++)
1584 remote_protocol_packets
[PACKET_Z0
+ i
].detect
= remote_Z_packet_detect
;
1588 show_remote_protocol_Z_packet_cmd (struct ui_file
*file
, int from_tty
,
1589 struct cmd_list_element
*c
,
1594 for (i
= 0; i
< NR_Z_PACKET_TYPES
; i
++)
1596 show_packet_config_cmd (&remote_protocol_packets
[PACKET_Z0
+ i
]);
1600 /* Returns true if the multi-process extensions are in effect. */
1603 remote_multi_process_p (struct remote_state
*rs
)
1605 return packet_support (PACKET_multiprocess_feature
) == PACKET_ENABLE
;
1608 /* Returns true if fork events are supported. */
1611 remote_fork_event_p (struct remote_state
*rs
)
1613 return packet_support (PACKET_fork_event_feature
) == PACKET_ENABLE
;
1616 /* Returns true if vfork events are supported. */
1619 remote_vfork_event_p (struct remote_state
*rs
)
1621 return packet_support (PACKET_vfork_event_feature
) == PACKET_ENABLE
;
1624 /* Returns true if exec events are supported. */
1627 remote_exec_event_p (struct remote_state
*rs
)
1629 return packet_support (PACKET_exec_event_feature
) == PACKET_ENABLE
;
1632 /* Insert fork catchpoint target routine. If fork events are enabled
1633 then return success, nothing more to do. */
1636 remote_insert_fork_catchpoint (struct target_ops
*ops
, int pid
)
1638 struct remote_state
*rs
= get_remote_state ();
1640 return !remote_fork_event_p (rs
);
1643 /* Remove fork catchpoint target routine. Nothing to do, just
1647 remote_remove_fork_catchpoint (struct target_ops
*ops
, int pid
)
1652 /* Insert vfork catchpoint target routine. If vfork events are enabled
1653 then return success, nothing more to do. */
1656 remote_insert_vfork_catchpoint (struct target_ops
*ops
, int pid
)
1658 struct remote_state
*rs
= get_remote_state ();
1660 return !remote_vfork_event_p (rs
);
1663 /* Remove vfork catchpoint target routine. Nothing to do, just
1667 remote_remove_vfork_catchpoint (struct target_ops
*ops
, int pid
)
1672 /* Insert exec catchpoint target routine. If exec events are
1673 enabled, just return success. */
1676 remote_insert_exec_catchpoint (struct target_ops
*ops
, int pid
)
1678 struct remote_state
*rs
= get_remote_state ();
1680 return !remote_exec_event_p (rs
);
1683 /* Remove exec catchpoint target routine. Nothing to do, just
1687 remote_remove_exec_catchpoint (struct target_ops
*ops
, int pid
)
1692 /* Tokens for use by the asynchronous signal handlers for SIGINT. */
1693 static struct async_signal_handler
*async_sigint_remote_twice_token
;
1694 static struct async_signal_handler
*async_sigint_remote_token
;
1697 /* Asynchronous signal handle registered as event loop source for
1698 when we have pending events ready to be passed to the core. */
1700 static struct async_event_handler
*remote_async_inferior_event_token
;
1704 static ptid_t magic_null_ptid
;
1705 static ptid_t not_sent_ptid
;
1706 static ptid_t any_thread_ptid
;
1708 /* Find out if the stub attached to PID (and hence GDB should offer to
1709 detach instead of killing it when bailing out). */
1712 remote_query_attached (int pid
)
1714 struct remote_state
*rs
= get_remote_state ();
1715 size_t size
= get_remote_packet_size ();
1717 if (packet_support (PACKET_qAttached
) == PACKET_DISABLE
)
1720 if (remote_multi_process_p (rs
))
1721 xsnprintf (rs
->buf
, size
, "qAttached:%x", pid
);
1723 xsnprintf (rs
->buf
, size
, "qAttached");
1726 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1728 switch (packet_ok (rs
->buf
,
1729 &remote_protocol_packets
[PACKET_qAttached
]))
1732 if (strcmp (rs
->buf
, "1") == 0)
1736 warning (_("Remote failure reply: %s"), rs
->buf
);
1738 case PACKET_UNKNOWN
:
1745 /* Add PID to GDB's inferior table. If FAKE_PID_P is true, then PID
1746 has been invented by GDB, instead of reported by the target. Since
1747 we can be connected to a remote system before before knowing about
1748 any inferior, mark the target with execution when we find the first
1749 inferior. If ATTACHED is 1, then we had just attached to this
1750 inferior. If it is 0, then we just created this inferior. If it
1751 is -1, then try querying the remote stub to find out if it had
1752 attached to the inferior or not. If TRY_OPEN_EXEC is true then
1753 attempt to open this inferior's executable as the main executable
1754 if no main executable is open already. */
1756 static struct inferior
*
1757 remote_add_inferior (int fake_pid_p
, int pid
, int attached
,
1760 struct inferior
*inf
;
1762 /* Check whether this process we're learning about is to be
1763 considered attached, or if is to be considered to have been
1764 spawned by the stub. */
1766 attached
= remote_query_attached (pid
);
1768 if (gdbarch_has_global_solist (target_gdbarch ()))
1770 /* If the target shares code across all inferiors, then every
1771 attach adds a new inferior. */
1772 inf
= add_inferior (pid
);
1774 /* ... and every inferior is bound to the same program space.
1775 However, each inferior may still have its own address
1777 inf
->aspace
= maybe_new_address_space ();
1778 inf
->pspace
= current_program_space
;
1782 /* In the traditional debugging scenario, there's a 1-1 match
1783 between program/address spaces. We simply bind the inferior
1784 to the program space's address space. */
1785 inf
= current_inferior ();
1786 inferior_appeared (inf
, pid
);
1789 inf
->attach_flag
= attached
;
1790 inf
->fake_pid_p
= fake_pid_p
;
1792 /* If no main executable is currently open then attempt to
1793 open the file that was executed to create this inferior. */
1794 if (try_open_exec
&& get_exec_file (0) == NULL
)
1795 exec_file_locate_attach (pid
, 1);
1800 /* Add thread PTID to GDB's thread list. Tag it as executing/running
1801 according to RUNNING. */
1804 remote_add_thread (ptid_t ptid
, int running
)
1806 struct remote_state
*rs
= get_remote_state ();
1808 /* GDB historically didn't pull threads in the initial connection
1809 setup. If the remote target doesn't even have a concept of
1810 threads (e.g., a bare-metal target), even if internally we
1811 consider that a single-threaded target, mentioning a new thread
1812 might be confusing to the user. Be silent then, preserving the
1813 age old behavior. */
1814 if (rs
->starting_up
)
1815 add_thread_silent (ptid
);
1819 set_executing (ptid
, running
);
1820 set_running (ptid
, running
);
1823 /* Come here when we learn about a thread id from the remote target.
1824 It may be the first time we hear about such thread, so take the
1825 opportunity to add it to GDB's thread list. In case this is the
1826 first time we're noticing its corresponding inferior, add it to
1827 GDB's inferior list as well. */
1830 remote_notice_new_inferior (ptid_t currthread
, int running
)
1832 /* If this is a new thread, add it to GDB's thread list.
1833 If we leave it up to WFI to do this, bad things will happen. */
1835 if (in_thread_list (currthread
) && is_exited (currthread
))
1837 /* We're seeing an event on a thread id we knew had exited.
1838 This has to be a new thread reusing the old id. Add it. */
1839 remote_add_thread (currthread
, running
);
1843 if (!in_thread_list (currthread
))
1845 struct inferior
*inf
= NULL
;
1846 int pid
= ptid_get_pid (currthread
);
1848 if (ptid_is_pid (inferior_ptid
)
1849 && pid
== ptid_get_pid (inferior_ptid
))
1851 /* inferior_ptid has no thread member yet. This can happen
1852 with the vAttach -> remote_wait,"TAAthread:" path if the
1853 stub doesn't support qC. This is the first stop reported
1854 after an attach, so this is the main thread. Update the
1855 ptid in the thread list. */
1856 if (in_thread_list (pid_to_ptid (pid
)))
1857 thread_change_ptid (inferior_ptid
, currthread
);
1860 remote_add_thread (currthread
, running
);
1861 inferior_ptid
= currthread
;
1866 if (ptid_equal (magic_null_ptid
, inferior_ptid
))
1868 /* inferior_ptid is not set yet. This can happen with the
1869 vRun -> remote_wait,"TAAthread:" path if the stub
1870 doesn't support qC. This is the first stop reported
1871 after an attach, so this is the main thread. Update the
1872 ptid in the thread list. */
1873 thread_change_ptid (inferior_ptid
, currthread
);
1877 /* When connecting to a target remote, or to a target
1878 extended-remote which already was debugging an inferior, we
1879 may not know about it yet. Add it before adding its child
1880 thread, so notifications are emitted in a sensible order. */
1881 if (!in_inferior_list (ptid_get_pid (currthread
)))
1883 struct remote_state
*rs
= get_remote_state ();
1884 int fake_pid_p
= !remote_multi_process_p (rs
);
1886 inf
= remote_add_inferior (fake_pid_p
,
1887 ptid_get_pid (currthread
), -1, 1);
1890 /* This is really a new thread. Add it. */
1891 remote_add_thread (currthread
, running
);
1893 /* If we found a new inferior, let the common code do whatever
1894 it needs to with it (e.g., read shared libraries, insert
1895 breakpoints), unless we're just setting up an all-stop
1899 struct remote_state
*rs
= get_remote_state ();
1901 if (!rs
->starting_up
)
1902 notice_new_inferior (currthread
, running
, 0);
1907 /* Return the private thread data, creating it if necessary. */
1909 static struct private_thread_info
*
1910 demand_private_info (ptid_t ptid
)
1912 struct thread_info
*info
= find_thread_ptid (ptid
);
1918 info
->priv
= XNEW (struct private_thread_info
);
1919 info
->private_dtor
= free_private_thread_info
;
1920 info
->priv
->core
= -1;
1921 info
->priv
->extra
= 0;
1927 /* Call this function as a result of
1928 1) A halt indication (T packet) containing a thread id
1929 2) A direct query of currthread
1930 3) Successful execution of set thread */
1933 record_currthread (struct remote_state
*rs
, ptid_t currthread
)
1935 rs
->general_thread
= currthread
;
1938 /* If 'QPassSignals' is supported, tell the remote stub what signals
1939 it can simply pass through to the inferior without reporting. */
1942 remote_pass_signals (struct target_ops
*self
,
1943 int numsigs
, unsigned char *pass_signals
)
1945 if (packet_support (PACKET_QPassSignals
) != PACKET_DISABLE
)
1947 char *pass_packet
, *p
;
1949 struct remote_state
*rs
= get_remote_state ();
1951 gdb_assert (numsigs
< 256);
1952 for (i
= 0; i
< numsigs
; i
++)
1954 if (pass_signals
[i
])
1957 pass_packet
= (char *) xmalloc (count
* 3 + strlen ("QPassSignals:") + 1);
1958 strcpy (pass_packet
, "QPassSignals:");
1959 p
= pass_packet
+ strlen (pass_packet
);
1960 for (i
= 0; i
< numsigs
; i
++)
1962 if (pass_signals
[i
])
1965 *p
++ = tohex (i
>> 4);
1966 *p
++ = tohex (i
& 15);
1975 if (!rs
->last_pass_packet
|| strcmp (rs
->last_pass_packet
, pass_packet
))
1977 putpkt (pass_packet
);
1978 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1979 packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_QPassSignals
]);
1980 if (rs
->last_pass_packet
)
1981 xfree (rs
->last_pass_packet
);
1982 rs
->last_pass_packet
= pass_packet
;
1985 xfree (pass_packet
);
1989 /* If 'QProgramSignals' is supported, tell the remote stub what
1990 signals it should pass through to the inferior when detaching. */
1993 remote_program_signals (struct target_ops
*self
,
1994 int numsigs
, unsigned char *signals
)
1996 if (packet_support (PACKET_QProgramSignals
) != PACKET_DISABLE
)
2000 struct remote_state
*rs
= get_remote_state ();
2002 gdb_assert (numsigs
< 256);
2003 for (i
= 0; i
< numsigs
; i
++)
2008 packet
= (char *) xmalloc (count
* 3 + strlen ("QProgramSignals:") + 1);
2009 strcpy (packet
, "QProgramSignals:");
2010 p
= packet
+ strlen (packet
);
2011 for (i
= 0; i
< numsigs
; i
++)
2013 if (signal_pass_state (i
))
2016 *p
++ = tohex (i
>> 4);
2017 *p
++ = tohex (i
& 15);
2026 if (!rs
->last_program_signals_packet
2027 || strcmp (rs
->last_program_signals_packet
, packet
) != 0)
2030 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2031 packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_QProgramSignals
]);
2032 xfree (rs
->last_program_signals_packet
);
2033 rs
->last_program_signals_packet
= packet
;
2040 /* If PTID is MAGIC_NULL_PTID, don't set any thread. If PTID is
2041 MINUS_ONE_PTID, set the thread to -1, so the stub returns the
2042 thread. If GEN is set, set the general thread, if not, then set
2043 the step/continue thread. */
2045 set_thread (struct ptid ptid
, int gen
)
2047 struct remote_state
*rs
= get_remote_state ();
2048 ptid_t state
= gen
? rs
->general_thread
: rs
->continue_thread
;
2049 char *buf
= rs
->buf
;
2050 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
2052 if (ptid_equal (state
, ptid
))
2056 *buf
++ = gen
? 'g' : 'c';
2057 if (ptid_equal (ptid
, magic_null_ptid
))
2058 xsnprintf (buf
, endbuf
- buf
, "0");
2059 else if (ptid_equal (ptid
, any_thread_ptid
))
2060 xsnprintf (buf
, endbuf
- buf
, "0");
2061 else if (ptid_equal (ptid
, minus_one_ptid
))
2062 xsnprintf (buf
, endbuf
- buf
, "-1");
2064 write_ptid (buf
, endbuf
, ptid
);
2066 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2068 rs
->general_thread
= ptid
;
2070 rs
->continue_thread
= ptid
;
2074 set_general_thread (struct ptid ptid
)
2076 set_thread (ptid
, 1);
2080 set_continue_thread (struct ptid ptid
)
2082 set_thread (ptid
, 0);
2085 /* Change the remote current process. Which thread within the process
2086 ends up selected isn't important, as long as it is the same process
2087 as what INFERIOR_PTID points to.
2089 This comes from that fact that there is no explicit notion of
2090 "selected process" in the protocol. The selected process for
2091 general operations is the process the selected general thread
2095 set_general_process (void)
2097 struct remote_state
*rs
= get_remote_state ();
2099 /* If the remote can't handle multiple processes, don't bother. */
2100 if (!rs
->extended
|| !remote_multi_process_p (rs
))
2103 /* We only need to change the remote current thread if it's pointing
2104 at some other process. */
2105 if (ptid_get_pid (rs
->general_thread
) != ptid_get_pid (inferior_ptid
))
2106 set_general_thread (inferior_ptid
);
2110 /* Return nonzero if this is the main thread that we made up ourselves
2111 to model non-threaded targets as single-threaded. */
2114 remote_thread_always_alive (struct target_ops
*ops
, ptid_t ptid
)
2116 struct remote_state
*rs
= get_remote_state ();
2119 if (ptid_equal (ptid
, magic_null_ptid
))
2120 /* The main thread is always alive. */
2123 if (ptid_get_pid (ptid
) != 0 && ptid_get_lwp (ptid
) == 0)
2124 /* The main thread is always alive. This can happen after a
2125 vAttach, if the remote side doesn't support
2132 /* Return nonzero if the thread PTID is still alive on the remote
2136 remote_thread_alive (struct target_ops
*ops
, ptid_t ptid
)
2138 struct remote_state
*rs
= get_remote_state ();
2141 /* Check if this is a thread that we made up ourselves to model
2142 non-threaded targets as single-threaded. */
2143 if (remote_thread_always_alive (ops
, ptid
))
2147 endp
= rs
->buf
+ get_remote_packet_size ();
2150 write_ptid (p
, endp
, ptid
);
2153 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2154 return (rs
->buf
[0] == 'O' && rs
->buf
[1] == 'K');
2157 /* Return a pointer to a thread name if we know it and NULL otherwise.
2158 The thread_info object owns the memory for the name. */
2161 remote_thread_name (struct target_ops
*ops
, struct thread_info
*info
)
2163 if (info
->priv
!= NULL
)
2164 return info
->priv
->name
;
2169 /* About these extended threadlist and threadinfo packets. They are
2170 variable length packets but, the fields within them are often fixed
2171 length. They are redundent enough to send over UDP as is the
2172 remote protocol in general. There is a matching unit test module
2175 /* WARNING: This threadref data structure comes from the remote O.S.,
2176 libstub protocol encoding, and remote.c. It is not particularly
2179 /* Right now, the internal structure is int. We want it to be bigger.
2180 Plan to fix this. */
2182 typedef int gdb_threadref
; /* Internal GDB thread reference. */
2184 /* gdb_ext_thread_info is an internal GDB data structure which is
2185 equivalent to the reply of the remote threadinfo packet. */
2187 struct gdb_ext_thread_info
2189 threadref threadid
; /* External form of thread reference. */
2190 int active
; /* Has state interesting to GDB?
2192 char display
[256]; /* Brief state display, name,
2193 blocked/suspended. */
2194 char shortname
[32]; /* To be used to name threads. */
2195 char more_display
[256]; /* Long info, statistics, queue depth,
2199 /* The volume of remote transfers can be limited by submitting
2200 a mask containing bits specifying the desired information.
2201 Use a union of these values as the 'selection' parameter to
2202 get_thread_info. FIXME: Make these TAG names more thread specific. */
2204 #define TAG_THREADID 1
2205 #define TAG_EXISTS 2
2206 #define TAG_DISPLAY 4
2207 #define TAG_THREADNAME 8
2208 #define TAG_MOREDISPLAY 16
2210 #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2)
2212 static char *unpack_nibble (char *buf
, int *val
);
2214 static char *unpack_byte (char *buf
, int *value
);
2216 static char *pack_int (char *buf
, int value
);
2218 static char *unpack_int (char *buf
, int *value
);
2220 static char *unpack_string (char *src
, char *dest
, int length
);
2222 static char *pack_threadid (char *pkt
, threadref
*id
);
2224 static char *unpack_threadid (char *inbuf
, threadref
*id
);
2226 void int_to_threadref (threadref
*id
, int value
);
2228 static int threadref_to_int (threadref
*ref
);
2230 static void copy_threadref (threadref
*dest
, threadref
*src
);
2232 static int threadmatch (threadref
*dest
, threadref
*src
);
2234 static char *pack_threadinfo_request (char *pkt
, int mode
,
2237 static int remote_unpack_thread_info_response (char *pkt
,
2238 threadref
*expectedref
,
2239 struct gdb_ext_thread_info
2243 static int remote_get_threadinfo (threadref
*threadid
,
2244 int fieldset
, /*TAG mask */
2245 struct gdb_ext_thread_info
*info
);
2247 static char *pack_threadlist_request (char *pkt
, int startflag
,
2249 threadref
*nextthread
);
2251 static int parse_threadlist_response (char *pkt
,
2253 threadref
*original_echo
,
2254 threadref
*resultlist
,
2257 static int remote_get_threadlist (int startflag
,
2258 threadref
*nextthread
,
2262 threadref
*threadlist
);
2264 typedef int (*rmt_thread_action
) (threadref
*ref
, void *context
);
2266 static int remote_threadlist_iterator (rmt_thread_action stepfunction
,
2267 void *context
, int looplimit
);
2269 static int remote_newthread_step (threadref
*ref
, void *context
);
2272 /* Write a PTID to BUF. ENDBUF points to one-passed-the-end of the
2273 buffer we're allowed to write to. Returns
2274 BUF+CHARACTERS_WRITTEN. */
2277 write_ptid (char *buf
, const char *endbuf
, ptid_t ptid
)
2280 struct remote_state
*rs
= get_remote_state ();
2282 if (remote_multi_process_p (rs
))
2284 pid
= ptid_get_pid (ptid
);
2286 buf
+= xsnprintf (buf
, endbuf
- buf
, "p-%x.", -pid
);
2288 buf
+= xsnprintf (buf
, endbuf
- buf
, "p%x.", pid
);
2290 tid
= ptid_get_lwp (ptid
);
2292 buf
+= xsnprintf (buf
, endbuf
- buf
, "-%x", -tid
);
2294 buf
+= xsnprintf (buf
, endbuf
- buf
, "%x", tid
);
2299 /* Extract a PTID from BUF. If non-null, OBUF is set to the to one
2300 passed the last parsed char. Returns null_ptid on error. */
2303 read_ptid (char *buf
, char **obuf
)
2307 ULONGEST pid
= 0, tid
= 0;
2311 /* Multi-process ptid. */
2312 pp
= unpack_varlen_hex (p
+ 1, &pid
);
2314 error (_("invalid remote ptid: %s"), p
);
2317 pp
= unpack_varlen_hex (p
+ 1, &tid
);
2320 return ptid_build (pid
, tid
, 0);
2323 /* No multi-process. Just a tid. */
2324 pp
= unpack_varlen_hex (p
, &tid
);
2326 /* Return null_ptid when no thread id is found. */
2334 /* Since the stub is not sending a process id, then default to
2335 what's in inferior_ptid, unless it's null at this point. If so,
2336 then since there's no way to know the pid of the reported
2337 threads, use the magic number. */
2338 if (ptid_equal (inferior_ptid
, null_ptid
))
2339 pid
= ptid_get_pid (magic_null_ptid
);
2341 pid
= ptid_get_pid (inferior_ptid
);
2345 return ptid_build (pid
, tid
, 0);
2351 if (ch
>= 'a' && ch
<= 'f')
2352 return ch
- 'a' + 10;
2353 if (ch
>= '0' && ch
<= '9')
2355 if (ch
>= 'A' && ch
<= 'F')
2356 return ch
- 'A' + 10;
2361 stub_unpack_int (char *buff
, int fieldlength
)
2368 nibble
= stubhex (*buff
++);
2372 retval
= retval
<< 4;
2378 unpack_nibble (char *buf
, int *val
)
2380 *val
= fromhex (*buf
++);
2385 unpack_byte (char *buf
, int *value
)
2387 *value
= stub_unpack_int (buf
, 2);
2392 pack_int (char *buf
, int value
)
2394 buf
= pack_hex_byte (buf
, (value
>> 24) & 0xff);
2395 buf
= pack_hex_byte (buf
, (value
>> 16) & 0xff);
2396 buf
= pack_hex_byte (buf
, (value
>> 8) & 0x0ff);
2397 buf
= pack_hex_byte (buf
, (value
& 0xff));
2402 unpack_int (char *buf
, int *value
)
2404 *value
= stub_unpack_int (buf
, 8);
2408 #if 0 /* Currently unused, uncomment when needed. */
2409 static char *pack_string (char *pkt
, char *string
);
2412 pack_string (char *pkt
, char *string
)
2417 len
= strlen (string
);
2419 len
= 200; /* Bigger than most GDB packets, junk??? */
2420 pkt
= pack_hex_byte (pkt
, len
);
2424 if ((ch
== '\0') || (ch
== '#'))
2425 ch
= '*'; /* Protect encapsulation. */
2430 #endif /* 0 (unused) */
2433 unpack_string (char *src
, char *dest
, int length
)
2442 pack_threadid (char *pkt
, threadref
*id
)
2445 unsigned char *altid
;
2447 altid
= (unsigned char *) id
;
2448 limit
= pkt
+ BUF_THREAD_ID_SIZE
;
2450 pkt
= pack_hex_byte (pkt
, *altid
++);
2456 unpack_threadid (char *inbuf
, threadref
*id
)
2459 char *limit
= inbuf
+ BUF_THREAD_ID_SIZE
;
2462 altref
= (char *) id
;
2464 while (inbuf
< limit
)
2466 x
= stubhex (*inbuf
++);
2467 y
= stubhex (*inbuf
++);
2468 *altref
++ = (x
<< 4) | y
;
2473 /* Externally, threadrefs are 64 bits but internally, they are still
2474 ints. This is due to a mismatch of specifications. We would like
2475 to use 64bit thread references internally. This is an adapter
2479 int_to_threadref (threadref
*id
, int value
)
2481 unsigned char *scan
;
2483 scan
= (unsigned char *) id
;
2489 *scan
++ = (value
>> 24) & 0xff;
2490 *scan
++ = (value
>> 16) & 0xff;
2491 *scan
++ = (value
>> 8) & 0xff;
2492 *scan
++ = (value
& 0xff);
2496 threadref_to_int (threadref
*ref
)
2499 unsigned char *scan
;
2505 value
= (value
<< 8) | ((*scan
++) & 0xff);
2510 copy_threadref (threadref
*dest
, threadref
*src
)
2513 unsigned char *csrc
, *cdest
;
2515 csrc
= (unsigned char *) src
;
2516 cdest
= (unsigned char *) dest
;
2523 threadmatch (threadref
*dest
, threadref
*src
)
2525 /* Things are broken right now, so just assume we got a match. */
2527 unsigned char *srcp
, *destp
;
2529 srcp
= (char *) src
;
2530 destp
= (char *) dest
;
2534 result
&= (*srcp
++ == *destp
++) ? 1 : 0;
2541 threadid:1, # always request threadid
2548 /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */
2551 pack_threadinfo_request (char *pkt
, int mode
, threadref
*id
)
2553 *pkt
++ = 'q'; /* Info Query */
2554 *pkt
++ = 'P'; /* process or thread info */
2555 pkt
= pack_int (pkt
, mode
); /* mode */
2556 pkt
= pack_threadid (pkt
, id
); /* threadid */
2557 *pkt
= '\0'; /* terminate */
2561 /* These values tag the fields in a thread info response packet. */
2562 /* Tagging the fields allows us to request specific fields and to
2563 add more fields as time goes by. */
2565 #define TAG_THREADID 1 /* Echo the thread identifier. */
2566 #define TAG_EXISTS 2 /* Is this process defined enough to
2567 fetch registers and its stack? */
2568 #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */
2569 #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */
2570 #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about
2574 remote_unpack_thread_info_response (char *pkt
, threadref
*expectedref
,
2575 struct gdb_ext_thread_info
*info
)
2577 struct remote_state
*rs
= get_remote_state ();
2581 char *limit
= pkt
+ rs
->buf_size
; /* Plausible parsing limit. */
2584 /* info->threadid = 0; FIXME: implement zero_threadref. */
2586 info
->display
[0] = '\0';
2587 info
->shortname
[0] = '\0';
2588 info
->more_display
[0] = '\0';
2590 /* Assume the characters indicating the packet type have been
2592 pkt
= unpack_int (pkt
, &mask
); /* arg mask */
2593 pkt
= unpack_threadid (pkt
, &ref
);
2596 warning (_("Incomplete response to threadinfo request."));
2597 if (!threadmatch (&ref
, expectedref
))
2598 { /* This is an answer to a different request. */
2599 warning (_("ERROR RMT Thread info mismatch."));
2602 copy_threadref (&info
->threadid
, &ref
);
2604 /* Loop on tagged fields , try to bail if somthing goes wrong. */
2606 /* Packets are terminated with nulls. */
2607 while ((pkt
< limit
) && mask
&& *pkt
)
2609 pkt
= unpack_int (pkt
, &tag
); /* tag */
2610 pkt
= unpack_byte (pkt
, &length
); /* length */
2611 if (!(tag
& mask
)) /* Tags out of synch with mask. */
2613 warning (_("ERROR RMT: threadinfo tag mismatch."));
2617 if (tag
== TAG_THREADID
)
2621 warning (_("ERROR RMT: length of threadid is not 16."));
2625 pkt
= unpack_threadid (pkt
, &ref
);
2626 mask
= mask
& ~TAG_THREADID
;
2629 if (tag
== TAG_EXISTS
)
2631 info
->active
= stub_unpack_int (pkt
, length
);
2633 mask
= mask
& ~(TAG_EXISTS
);
2636 warning (_("ERROR RMT: 'exists' length too long."));
2642 if (tag
== TAG_THREADNAME
)
2644 pkt
= unpack_string (pkt
, &info
->shortname
[0], length
);
2645 mask
= mask
& ~TAG_THREADNAME
;
2648 if (tag
== TAG_DISPLAY
)
2650 pkt
= unpack_string (pkt
, &info
->display
[0], length
);
2651 mask
= mask
& ~TAG_DISPLAY
;
2654 if (tag
== TAG_MOREDISPLAY
)
2656 pkt
= unpack_string (pkt
, &info
->more_display
[0], length
);
2657 mask
= mask
& ~TAG_MOREDISPLAY
;
2660 warning (_("ERROR RMT: unknown thread info tag."));
2661 break; /* Not a tag we know about. */
2667 remote_get_threadinfo (threadref
*threadid
, int fieldset
, /* TAG mask */
2668 struct gdb_ext_thread_info
*info
)
2670 struct remote_state
*rs
= get_remote_state ();
2673 pack_threadinfo_request (rs
->buf
, fieldset
, threadid
);
2675 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2677 if (rs
->buf
[0] == '\0')
2680 result
= remote_unpack_thread_info_response (rs
->buf
+ 2,
2685 /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */
2688 pack_threadlist_request (char *pkt
, int startflag
, int threadcount
,
2689 threadref
*nextthread
)
2691 *pkt
++ = 'q'; /* info query packet */
2692 *pkt
++ = 'L'; /* Process LIST or threadLIST request */
2693 pkt
= pack_nibble (pkt
, startflag
); /* initflag 1 bytes */
2694 pkt
= pack_hex_byte (pkt
, threadcount
); /* threadcount 2 bytes */
2695 pkt
= pack_threadid (pkt
, nextthread
); /* 64 bit thread identifier */
2700 /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */
2703 parse_threadlist_response (char *pkt
, int result_limit
,
2704 threadref
*original_echo
, threadref
*resultlist
,
2707 struct remote_state
*rs
= get_remote_state ();
2709 int count
, resultcount
, done
;
2712 /* Assume the 'q' and 'M chars have been stripped. */
2713 limit
= pkt
+ (rs
->buf_size
- BUF_THREAD_ID_SIZE
);
2714 /* done parse past here */
2715 pkt
= unpack_byte (pkt
, &count
); /* count field */
2716 pkt
= unpack_nibble (pkt
, &done
);
2717 /* The first threadid is the argument threadid. */
2718 pkt
= unpack_threadid (pkt
, original_echo
); /* should match query packet */
2719 while ((count
-- > 0) && (pkt
< limit
))
2721 pkt
= unpack_threadid (pkt
, resultlist
++);
2722 if (resultcount
++ >= result_limit
)
2730 /* Fetch the next batch of threads from the remote. Returns -1 if the
2731 qL packet is not supported, 0 on error and 1 on success. */
2734 remote_get_threadlist (int startflag
, threadref
*nextthread
, int result_limit
,
2735 int *done
, int *result_count
, threadref
*threadlist
)
2737 struct remote_state
*rs
= get_remote_state ();
2740 /* Trancate result limit to be smaller than the packet size. */
2741 if ((((result_limit
+ 1) * BUF_THREAD_ID_SIZE
) + 10)
2742 >= get_remote_packet_size ())
2743 result_limit
= (get_remote_packet_size () / BUF_THREAD_ID_SIZE
) - 2;
2745 pack_threadlist_request (rs
->buf
, startflag
, result_limit
, nextthread
);
2747 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2748 if (*rs
->buf
== '\0')
2750 /* Packet not supported. */
2755 parse_threadlist_response (rs
->buf
+ 2, result_limit
,
2756 &rs
->echo_nextthread
, threadlist
, done
);
2758 if (!threadmatch (&rs
->echo_nextthread
, nextthread
))
2760 /* FIXME: This is a good reason to drop the packet. */
2761 /* Possably, there is a duplicate response. */
2763 retransmit immediatly - race conditions
2764 retransmit after timeout - yes
2766 wait for packet, then exit
2768 warning (_("HMM: threadlist did not echo arg thread, dropping it."));
2769 return 0; /* I choose simply exiting. */
2771 if (*result_count
<= 0)
2775 warning (_("RMT ERROR : failed to get remote thread list."));
2778 return result
; /* break; */
2780 if (*result_count
> result_limit
)
2783 warning (_("RMT ERROR: threadlist response longer than requested."));
2789 /* Fetch the list of remote threads, with the qL packet, and call
2790 STEPFUNCTION for each thread found. Stops iterating and returns 1
2791 if STEPFUNCTION returns true. Stops iterating and returns 0 if the
2792 STEPFUNCTION returns false. If the packet is not supported,
2796 remote_threadlist_iterator (rmt_thread_action stepfunction
, void *context
,
2799 struct remote_state
*rs
= get_remote_state ();
2800 int done
, i
, result_count
;
2808 if (loopcount
++ > looplimit
)
2811 warning (_("Remote fetch threadlist -infinite loop-."));
2814 result
= remote_get_threadlist (startflag
, &rs
->nextthread
,
2815 MAXTHREADLISTRESULTS
,
2816 &done
, &result_count
,
2817 rs
->resultthreadlist
);
2820 /* Clear for later iterations. */
2822 /* Setup to resume next batch of thread references, set nextthread. */
2823 if (result_count
>= 1)
2824 copy_threadref (&rs
->nextthread
,
2825 &rs
->resultthreadlist
[result_count
- 1]);
2827 while (result_count
--)
2829 if (!(*stepfunction
) (&rs
->resultthreadlist
[i
++], context
))
2839 /* A thread found on the remote target. */
2841 typedef struct thread_item
2843 /* The thread's PTID. */
2846 /* The thread's extra info. May be NULL. */
2849 /* The thread's name. May be NULL. */
2852 /* The core the thread was running on. -1 if not known. */
2855 DEF_VEC_O(thread_item_t
);
2857 /* Context passed around to the various methods listing remote
2858 threads. As new threads are found, they're added to the ITEMS
2861 struct threads_listing_context
2863 /* The threads found on the remote target. */
2864 VEC (thread_item_t
) *items
;
2867 /* Discard the contents of the constructed thread listing context. */
2870 clear_threads_listing_context (void *p
)
2872 struct threads_listing_context
*context
2873 = (struct threads_listing_context
*) p
;
2875 struct thread_item
*item
;
2877 for (i
= 0; VEC_iterate (thread_item_t
, context
->items
, i
, item
); ++i
)
2879 xfree (item
->extra
);
2883 VEC_free (thread_item_t
, context
->items
);
2886 /* Remove the thread specified as the related_pid field of WS
2887 from the CONTEXT list. */
2890 threads_listing_context_remove (struct target_waitstatus
*ws
,
2891 struct threads_listing_context
*context
)
2893 struct thread_item
*item
;
2895 ptid_t child_ptid
= ws
->value
.related_pid
;
2897 for (i
= 0; VEC_iterate (thread_item_t
, context
->items
, i
, item
); ++i
)
2899 if (ptid_equal (item
->ptid
, child_ptid
))
2901 VEC_ordered_remove (thread_item_t
, context
->items
, i
);
2908 remote_newthread_step (threadref
*ref
, void *data
)
2910 struct threads_listing_context
*context
2911 = (struct threads_listing_context
*) data
;
2912 struct thread_item item
;
2913 int pid
= ptid_get_pid (inferior_ptid
);
2915 item
.ptid
= ptid_build (pid
, threadref_to_int (ref
), 0);
2920 VEC_safe_push (thread_item_t
, context
->items
, &item
);
2922 return 1; /* continue iterator */
2925 #define CRAZY_MAX_THREADS 1000
2928 remote_current_thread (ptid_t oldpid
)
2930 struct remote_state
*rs
= get_remote_state ();
2933 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2934 if (rs
->buf
[0] == 'Q' && rs
->buf
[1] == 'C')
2939 result
= read_ptid (&rs
->buf
[2], &obuf
);
2940 if (*obuf
!= '\0' && remote_debug
)
2941 fprintf_unfiltered (gdb_stdlog
,
2942 "warning: garbage in qC reply\n");
2950 /* List remote threads using the deprecated qL packet. */
2953 remote_get_threads_with_ql (struct target_ops
*ops
,
2954 struct threads_listing_context
*context
)
2956 if (remote_threadlist_iterator (remote_newthread_step
, context
,
2957 CRAZY_MAX_THREADS
) >= 0)
2963 #if defined(HAVE_LIBEXPAT)
2966 start_thread (struct gdb_xml_parser
*parser
,
2967 const struct gdb_xml_element
*element
,
2968 void *user_data
, VEC(gdb_xml_value_s
) *attributes
)
2970 struct threads_listing_context
*data
2971 = (struct threads_listing_context
*) user_data
;
2973 struct thread_item item
;
2975 struct gdb_xml_value
*attr
;
2977 id
= (char *) xml_find_attribute (attributes
, "id")->value
;
2978 item
.ptid
= read_ptid (id
, NULL
);
2980 attr
= xml_find_attribute (attributes
, "core");
2982 item
.core
= *(ULONGEST
*) attr
->value
;
2986 attr
= xml_find_attribute (attributes
, "name");
2987 item
.name
= attr
!= NULL
? xstrdup ((const char *) attr
->value
) : NULL
;
2991 VEC_safe_push (thread_item_t
, data
->items
, &item
);
2995 end_thread (struct gdb_xml_parser
*parser
,
2996 const struct gdb_xml_element
*element
,
2997 void *user_data
, const char *body_text
)
2999 struct threads_listing_context
*data
3000 = (struct threads_listing_context
*) user_data
;
3002 if (body_text
&& *body_text
)
3003 VEC_last (thread_item_t
, data
->items
)->extra
= xstrdup (body_text
);
3006 const struct gdb_xml_attribute thread_attributes
[] = {
3007 { "id", GDB_XML_AF_NONE
, NULL
, NULL
},
3008 { "core", GDB_XML_AF_OPTIONAL
, gdb_xml_parse_attr_ulongest
, NULL
},
3009 { "name", GDB_XML_AF_OPTIONAL
, NULL
, NULL
},
3010 { NULL
, GDB_XML_AF_NONE
, NULL
, NULL
}
3013 const struct gdb_xml_element thread_children
[] = {
3014 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
3017 const struct gdb_xml_element threads_children
[] = {
3018 { "thread", thread_attributes
, thread_children
,
3019 GDB_XML_EF_REPEATABLE
| GDB_XML_EF_OPTIONAL
,
3020 start_thread
, end_thread
},
3021 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
3024 const struct gdb_xml_element threads_elements
[] = {
3025 { "threads", NULL
, threads_children
,
3026 GDB_XML_EF_NONE
, NULL
, NULL
},
3027 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
3032 /* List remote threads using qXfer:threads:read. */
3035 remote_get_threads_with_qxfer (struct target_ops
*ops
,
3036 struct threads_listing_context
*context
)
3038 #if defined(HAVE_LIBEXPAT)
3039 if (packet_support (PACKET_qXfer_threads
) == PACKET_ENABLE
)
3041 char *xml
= target_read_stralloc (ops
, TARGET_OBJECT_THREADS
, NULL
);
3042 struct cleanup
*back_to
= make_cleanup (xfree
, xml
);
3044 if (xml
!= NULL
&& *xml
!= '\0')
3046 gdb_xml_parse_quick (_("threads"), "threads.dtd",
3047 threads_elements
, xml
, context
);
3050 do_cleanups (back_to
);
3058 /* List remote threads using qfThreadInfo/qsThreadInfo. */
3061 remote_get_threads_with_qthreadinfo (struct target_ops
*ops
,
3062 struct threads_listing_context
*context
)
3064 struct remote_state
*rs
= get_remote_state ();
3066 if (rs
->use_threadinfo_query
)
3070 putpkt ("qfThreadInfo");
3071 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3073 if (bufp
[0] != '\0') /* q packet recognized */
3075 while (*bufp
++ == 'm') /* reply contains one or more TID */
3079 struct thread_item item
;
3081 item
.ptid
= read_ptid (bufp
, &bufp
);
3086 VEC_safe_push (thread_item_t
, context
->items
, &item
);
3088 while (*bufp
++ == ','); /* comma-separated list */
3089 putpkt ("qsThreadInfo");
3090 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3097 /* Packet not recognized. */
3098 rs
->use_threadinfo_query
= 0;
3105 /* Implement the to_update_thread_list function for the remote
3109 remote_update_thread_list (struct target_ops
*ops
)
3111 struct remote_state
*rs
= get_remote_state ();
3112 struct threads_listing_context context
;
3113 struct cleanup
*old_chain
;
3116 context
.items
= NULL
;
3117 old_chain
= make_cleanup (clear_threads_listing_context
, &context
);
3119 /* We have a few different mechanisms to fetch the thread list. Try
3120 them all, starting with the most preferred one first, falling
3121 back to older methods. */
3122 if (remote_get_threads_with_qxfer (ops
, &context
)
3123 || remote_get_threads_with_qthreadinfo (ops
, &context
)
3124 || remote_get_threads_with_ql (ops
, &context
))
3127 struct thread_item
*item
;
3128 struct thread_info
*tp
, *tmp
;
3132 if (VEC_empty (thread_item_t
, context
.items
)
3133 && remote_thread_always_alive (ops
, inferior_ptid
))
3135 /* Some targets don't really support threads, but still
3136 reply an (empty) thread list in response to the thread
3137 listing packets, instead of replying "packet not
3138 supported". Exit early so we don't delete the main
3140 do_cleanups (old_chain
);
3144 /* CONTEXT now holds the current thread list on the remote
3145 target end. Delete GDB-side threads no longer found on the
3147 ALL_THREADS_SAFE (tp
, tmp
)
3150 VEC_iterate (thread_item_t
, context
.items
, i
, item
);
3153 if (ptid_equal (item
->ptid
, tp
->ptid
))
3157 if (i
== VEC_length (thread_item_t
, context
.items
))
3160 delete_thread (tp
->ptid
);
3164 /* Remove any unreported fork child threads from CONTEXT so
3165 that we don't interfere with follow fork, which is where
3166 creation of such threads is handled. */
3167 remove_new_fork_children (&context
);
3169 /* And now add threads we don't know about yet to our list. */
3171 VEC_iterate (thread_item_t
, context
.items
, i
, item
);
3174 if (!ptid_equal (item
->ptid
, null_ptid
))
3176 struct private_thread_info
*info
;
3177 /* In non-stop mode, we assume new found threads are
3178 running until proven otherwise with a stop reply. In
3179 all-stop, we can only get here if all threads are
3181 int running
= target_is_non_stop_p () ? 1 : 0;
3183 remote_notice_new_inferior (item
->ptid
, running
);
3185 info
= demand_private_info (item
->ptid
);
3186 info
->core
= item
->core
;
3187 info
->extra
= item
->extra
;
3189 info
->name
= item
->name
;
3197 /* If no thread listing method is supported, then query whether
3198 each known thread is alive, one by one, with the T packet.
3199 If the target doesn't support threads at all, then this is a
3200 no-op. See remote_thread_alive. */
3204 do_cleanups (old_chain
);
3208 * Collect a descriptive string about the given thread.
3209 * The target may say anything it wants to about the thread
3210 * (typically info about its blocked / runnable state, name, etc.).
3211 * This string will appear in the info threads display.
3213 * Optional: targets are not required to implement this function.
3217 remote_threads_extra_info (struct target_ops
*self
, struct thread_info
*tp
)
3219 struct remote_state
*rs
= get_remote_state ();
3223 struct gdb_ext_thread_info threadinfo
;
3224 static char display_buf
[100]; /* arbitrary... */
3225 int n
= 0; /* position in display_buf */
3227 if (rs
->remote_desc
== 0) /* paranoia */
3228 internal_error (__FILE__
, __LINE__
,
3229 _("remote_threads_extra_info"));
3231 if (ptid_equal (tp
->ptid
, magic_null_ptid
)
3232 || (ptid_get_pid (tp
->ptid
) != 0 && ptid_get_lwp (tp
->ptid
) == 0))
3233 /* This is the main thread which was added by GDB. The remote
3234 server doesn't know about it. */
3237 if (packet_support (PACKET_qXfer_threads
) == PACKET_ENABLE
)
3239 struct thread_info
*info
= find_thread_ptid (tp
->ptid
);
3241 if (info
&& info
->priv
)
3242 return info
->priv
->extra
;
3247 if (rs
->use_threadextra_query
)
3250 char *endb
= rs
->buf
+ get_remote_packet_size ();
3252 xsnprintf (b
, endb
- b
, "qThreadExtraInfo,");
3254 write_ptid (b
, endb
, tp
->ptid
);
3257 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3258 if (rs
->buf
[0] != 0)
3260 n
= min (strlen (rs
->buf
) / 2, sizeof (display_buf
));
3261 result
= hex2bin (rs
->buf
, (gdb_byte
*) display_buf
, n
);
3262 display_buf
[result
] = '\0';
3267 /* If the above query fails, fall back to the old method. */
3268 rs
->use_threadextra_query
= 0;
3269 set
= TAG_THREADID
| TAG_EXISTS
| TAG_THREADNAME
3270 | TAG_MOREDISPLAY
| TAG_DISPLAY
;
3271 int_to_threadref (&id
, ptid_get_lwp (tp
->ptid
));
3272 if (remote_get_threadinfo (&id
, set
, &threadinfo
))
3273 if (threadinfo
.active
)
3275 if (*threadinfo
.shortname
)
3276 n
+= xsnprintf (&display_buf
[0], sizeof (display_buf
) - n
,
3277 " Name: %s,", threadinfo
.shortname
);
3278 if (*threadinfo
.display
)
3279 n
+= xsnprintf (&display_buf
[n
], sizeof (display_buf
) - n
,
3280 " State: %s,", threadinfo
.display
);
3281 if (*threadinfo
.more_display
)
3282 n
+= xsnprintf (&display_buf
[n
], sizeof (display_buf
) - n
,
3283 " Priority: %s", threadinfo
.more_display
);
3287 /* For purely cosmetic reasons, clear up trailing commas. */
3288 if (',' == display_buf
[n
-1])
3289 display_buf
[n
-1] = ' ';
3298 remote_static_tracepoint_marker_at (struct target_ops
*self
, CORE_ADDR addr
,
3299 struct static_tracepoint_marker
*marker
)
3301 struct remote_state
*rs
= get_remote_state ();
3304 xsnprintf (p
, get_remote_packet_size (), "qTSTMat:");
3306 p
+= hexnumstr (p
, addr
);
3308 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3312 error (_("Remote failure reply: %s"), p
);
3316 parse_static_tracepoint_marker_definition (p
, &p
, marker
);
3323 static VEC(static_tracepoint_marker_p
) *
3324 remote_static_tracepoint_markers_by_strid (struct target_ops
*self
,
3327 struct remote_state
*rs
= get_remote_state ();
3328 VEC(static_tracepoint_marker_p
) *markers
= NULL
;
3329 struct static_tracepoint_marker
*marker
= NULL
;
3330 struct cleanup
*old_chain
;
3333 /* Ask for a first packet of static tracepoint marker
3336 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3339 error (_("Remote failure reply: %s"), p
);
3341 old_chain
= make_cleanup (free_current_marker
, &marker
);
3346 marker
= XCNEW (struct static_tracepoint_marker
);
3350 parse_static_tracepoint_marker_definition (p
, &p
, marker
);
3352 if (strid
== NULL
|| strcmp (strid
, marker
->str_id
) == 0)
3354 VEC_safe_push (static_tracepoint_marker_p
,
3360 release_static_tracepoint_marker (marker
);
3361 memset (marker
, 0, sizeof (*marker
));
3364 while (*p
++ == ','); /* comma-separated list */
3365 /* Ask for another packet of static tracepoint definition. */
3367 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3371 do_cleanups (old_chain
);
3376 /* Implement the to_get_ada_task_ptid function for the remote targets. */
3379 remote_get_ada_task_ptid (struct target_ops
*self
, long lwp
, long thread
)
3381 return ptid_build (ptid_get_pid (inferior_ptid
), lwp
, 0);
3385 /* Restart the remote side; this is an extended protocol operation. */
3388 extended_remote_restart (void)
3390 struct remote_state
*rs
= get_remote_state ();
3392 /* Send the restart command; for reasons I don't understand the
3393 remote side really expects a number after the "R". */
3394 xsnprintf (rs
->buf
, get_remote_packet_size (), "R%x", 0);
3397 remote_fileio_reset ();
3400 /* Clean up connection to a remote debugger. */
3403 remote_close (struct target_ops
*self
)
3405 struct remote_state
*rs
= get_remote_state ();
3407 if (rs
->remote_desc
== NULL
)
3408 return; /* already closed */
3410 /* Make sure we leave stdin registered in the event loop, and we
3411 don't leave the async SIGINT signal handler installed. */
3412 remote_terminal_ours (self
);
3414 serial_close (rs
->remote_desc
);
3415 rs
->remote_desc
= NULL
;
3417 /* We don't have a connection to the remote stub anymore. Get rid
3418 of all the inferiors and their threads we were controlling.
3419 Reset inferior_ptid to null_ptid first, as otherwise has_stack_frame
3420 will be unable to find the thread corresponding to (pid, 0, 0). */
3421 inferior_ptid
= null_ptid
;
3422 discard_all_inferiors ();
3424 /* We are closing the remote target, so we should discard
3425 everything of this target. */
3426 discard_pending_stop_replies_in_queue (rs
);
3428 if (remote_async_inferior_event_token
)
3429 delete_async_event_handler (&remote_async_inferior_event_token
);
3431 remote_notif_state_xfree (rs
->notif_state
);
3433 trace_reset_local_state ();
3436 /* Query the remote side for the text, data and bss offsets. */
3441 struct remote_state
*rs
= get_remote_state ();
3444 int lose
, num_segments
= 0, do_sections
, do_segments
;
3445 CORE_ADDR text_addr
, data_addr
, bss_addr
, segments
[2];
3446 struct section_offsets
*offs
;
3447 struct symfile_segment_data
*data
;
3449 if (symfile_objfile
== NULL
)
3452 putpkt ("qOffsets");
3453 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3456 if (buf
[0] == '\000')
3457 return; /* Return silently. Stub doesn't support
3461 warning (_("Remote failure reply: %s"), buf
);
3465 /* Pick up each field in turn. This used to be done with scanf, but
3466 scanf will make trouble if CORE_ADDR size doesn't match
3467 conversion directives correctly. The following code will work
3468 with any size of CORE_ADDR. */
3469 text_addr
= data_addr
= bss_addr
= 0;
3473 if (startswith (ptr
, "Text="))
3476 /* Don't use strtol, could lose on big values. */
3477 while (*ptr
&& *ptr
!= ';')
3478 text_addr
= (text_addr
<< 4) + fromhex (*ptr
++);
3480 if (startswith (ptr
, ";Data="))
3483 while (*ptr
&& *ptr
!= ';')
3484 data_addr
= (data_addr
<< 4) + fromhex (*ptr
++);
3489 if (!lose
&& startswith (ptr
, ";Bss="))
3492 while (*ptr
&& *ptr
!= ';')
3493 bss_addr
= (bss_addr
<< 4) + fromhex (*ptr
++);
3495 if (bss_addr
!= data_addr
)
3496 warning (_("Target reported unsupported offsets: %s"), buf
);
3501 else if (startswith (ptr
, "TextSeg="))
3504 /* Don't use strtol, could lose on big values. */
3505 while (*ptr
&& *ptr
!= ';')
3506 text_addr
= (text_addr
<< 4) + fromhex (*ptr
++);
3509 if (startswith (ptr
, ";DataSeg="))
3512 while (*ptr
&& *ptr
!= ';')
3513 data_addr
= (data_addr
<< 4) + fromhex (*ptr
++);
3521 error (_("Malformed response to offset query, %s"), buf
);
3522 else if (*ptr
!= '\0')
3523 warning (_("Target reported unsupported offsets: %s"), buf
);
3525 offs
= ((struct section_offsets
*)
3526 alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
)));
3527 memcpy (offs
, symfile_objfile
->section_offsets
,
3528 SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
));
3530 data
= get_symfile_segment_data (symfile_objfile
->obfd
);
3531 do_segments
= (data
!= NULL
);
3532 do_sections
= num_segments
== 0;
3534 if (num_segments
> 0)
3536 segments
[0] = text_addr
;
3537 segments
[1] = data_addr
;
3539 /* If we have two segments, we can still try to relocate everything
3540 by assuming that the .text and .data offsets apply to the whole
3541 text and data segments. Convert the offsets given in the packet
3542 to base addresses for symfile_map_offsets_to_segments. */
3543 else if (data
&& data
->num_segments
== 2)
3545 segments
[0] = data
->segment_bases
[0] + text_addr
;
3546 segments
[1] = data
->segment_bases
[1] + data_addr
;
3549 /* If the object file has only one segment, assume that it is text
3550 rather than data; main programs with no writable data are rare,
3551 but programs with no code are useless. Of course the code might
3552 have ended up in the data segment... to detect that we would need
3553 the permissions here. */
3554 else if (data
&& data
->num_segments
== 1)
3556 segments
[0] = data
->segment_bases
[0] + text_addr
;
3559 /* There's no way to relocate by segment. */
3565 int ret
= symfile_map_offsets_to_segments (symfile_objfile
->obfd
, data
,
3566 offs
, num_segments
, segments
);
3568 if (ret
== 0 && !do_sections
)
3569 error (_("Can not handle qOffsets TextSeg "
3570 "response with this symbol file"));
3577 free_symfile_segment_data (data
);
3581 offs
->offsets
[SECT_OFF_TEXT (symfile_objfile
)] = text_addr
;
3583 /* This is a temporary kludge to force data and bss to use the
3584 same offsets because that's what nlmconv does now. The real
3585 solution requires changes to the stub and remote.c that I
3586 don't have time to do right now. */
3588 offs
->offsets
[SECT_OFF_DATA (symfile_objfile
)] = data_addr
;
3589 offs
->offsets
[SECT_OFF_BSS (symfile_objfile
)] = data_addr
;
3592 objfile_relocate (symfile_objfile
, offs
);
3595 /* Send interrupt_sequence to remote target. */
3597 send_interrupt_sequence (void)
3599 struct remote_state
*rs
= get_remote_state ();
3601 if (interrupt_sequence_mode
== interrupt_sequence_control_c
)
3602 remote_serial_write ("\x03", 1);
3603 else if (interrupt_sequence_mode
== interrupt_sequence_break
)
3604 serial_send_break (rs
->remote_desc
);
3605 else if (interrupt_sequence_mode
== interrupt_sequence_break_g
)
3607 serial_send_break (rs
->remote_desc
);
3608 remote_serial_write ("g", 1);
3611 internal_error (__FILE__
, __LINE__
,
3612 _("Invalid value for interrupt_sequence_mode: %s."),
3613 interrupt_sequence_mode
);
3617 /* If STOP_REPLY is a T stop reply, look for the "thread" register,
3618 and extract the PTID. Returns NULL_PTID if not found. */
3621 stop_reply_extract_thread (char *stop_reply
)
3623 if (stop_reply
[0] == 'T' && strlen (stop_reply
) > 3)
3627 /* Txx r:val ; r:val (...) */
3630 /* Look for "register" named "thread". */
3635 p1
= strchr (p
, ':');
3639 if (strncmp (p
, "thread", p1
- p
) == 0)
3640 return read_ptid (++p1
, &p
);
3642 p1
= strchr (p
, ';');
3654 /* Determine the remote side's current thread. If we have a stop
3655 reply handy (in WAIT_STATUS), maybe it's a T stop reply with a
3656 "thread" register we can extract the current thread from. If not,
3657 ask the remote which is the current thread with qC. The former
3658 method avoids a roundtrip. */
3661 get_current_thread (char *wait_status
)
3663 ptid_t ptid
= null_ptid
;
3665 /* Note we don't use remote_parse_stop_reply as that makes use of
3666 the target architecture, which we haven't yet fully determined at
3668 if (wait_status
!= NULL
)
3669 ptid
= stop_reply_extract_thread (wait_status
);
3670 if (ptid_equal (ptid
, null_ptid
))
3671 ptid
= remote_current_thread (inferior_ptid
);
3676 /* Query the remote target for which is the current thread/process,
3677 add it to our tables, and update INFERIOR_PTID. The caller is
3678 responsible for setting the state such that the remote end is ready
3679 to return the current thread.
3681 This function is called after handling the '?' or 'vRun' packets,
3682 whose response is a stop reply from which we can also try
3683 extracting the thread. If the target doesn't support the explicit
3684 qC query, we infer the current thread from that stop reply, passed
3685 in in WAIT_STATUS, which may be NULL. */
3688 add_current_inferior_and_thread (char *wait_status
)
3690 struct remote_state
*rs
= get_remote_state ();
3694 inferior_ptid
= null_ptid
;
3696 /* Now, if we have thread information, update inferior_ptid. */
3697 ptid
= get_current_thread (wait_status
);
3699 if (!ptid_equal (ptid
, null_ptid
))
3701 if (!remote_multi_process_p (rs
))
3704 inferior_ptid
= ptid
;
3708 /* Without this, some commands which require an active target
3709 (such as kill) won't work. This variable serves (at least)
3710 double duty as both the pid of the target process (if it has
3711 such), and as a flag indicating that a target is active. */
3712 inferior_ptid
= magic_null_ptid
;
3716 remote_add_inferior (fake_pid_p
, ptid_get_pid (inferior_ptid
), -1, 1);
3718 /* Add the main thread. */
3719 add_thread_silent (inferior_ptid
);
3722 /* Print info about a thread that was found already stopped on
3726 print_one_stopped_thread (struct thread_info
*thread
)
3728 struct target_waitstatus
*ws
= &thread
->suspend
.waitstatus
;
3730 switch_to_thread (thread
->ptid
);
3731 stop_pc
= get_frame_pc (get_current_frame ());
3732 set_current_sal_from_frame (get_current_frame ());
3734 thread
->suspend
.waitstatus_pending_p
= 0;
3736 if (ws
->kind
== TARGET_WAITKIND_STOPPED
)
3738 enum gdb_signal sig
= ws
->value
.sig
;
3740 if (signal_print_state (sig
))
3741 observer_notify_signal_received (sig
);
3743 observer_notify_normal_stop (NULL
, 1);
3746 /* Process all initial stop replies the remote side sent in response
3747 to the ? packet. These indicate threads that were already stopped
3748 on initial connection. We mark these threads as stopped and print
3749 their current frame before giving the user the prompt. */
3752 process_initial_stop_replies (int from_tty
)
3754 int pending_stop_replies
= stop_reply_queue_length ();
3755 struct inferior
*inf
;
3756 struct thread_info
*thread
;
3757 struct thread_info
*selected
= NULL
;
3758 struct thread_info
*lowest_stopped
= NULL
;
3759 struct thread_info
*first
= NULL
;
3761 /* Consume the initial pending events. */
3762 while (pending_stop_replies
-- > 0)
3764 ptid_t waiton_ptid
= minus_one_ptid
;
3766 struct target_waitstatus ws
;
3767 int ignore_event
= 0;
3768 struct thread_info
*thread
;
3770 memset (&ws
, 0, sizeof (ws
));
3771 event_ptid
= target_wait (waiton_ptid
, &ws
, TARGET_WNOHANG
);
3773 print_target_wait_results (waiton_ptid
, event_ptid
, &ws
);
3777 case TARGET_WAITKIND_IGNORE
:
3778 case TARGET_WAITKIND_NO_RESUMED
:
3779 case TARGET_WAITKIND_SIGNALLED
:
3780 case TARGET_WAITKIND_EXITED
:
3781 /* We shouldn't see these, but if we do, just ignore. */
3783 fprintf_unfiltered (gdb_stdlog
, "remote: event ignored\n");
3787 case TARGET_WAITKIND_EXECD
:
3788 xfree (ws
.value
.execd_pathname
);
3797 thread
= find_thread_ptid (event_ptid
);
3799 if (ws
.kind
== TARGET_WAITKIND_STOPPED
)
3801 enum gdb_signal sig
= ws
.value
.sig
;
3803 /* Stubs traditionally report SIGTRAP as initial signal,
3804 instead of signal 0. Suppress it. */
3805 if (sig
== GDB_SIGNAL_TRAP
)
3807 thread
->suspend
.stop_signal
= sig
;
3811 thread
->suspend
.waitstatus
= ws
;
3813 if (ws
.kind
!= TARGET_WAITKIND_STOPPED
3814 || ws
.value
.sig
!= GDB_SIGNAL_0
)
3815 thread
->suspend
.waitstatus_pending_p
= 1;
3817 set_executing (event_ptid
, 0);
3818 set_running (event_ptid
, 0);
3821 /* "Notice" the new inferiors before anything related to
3822 registers/memory. */
3828 inf
->needs_setup
= 1;
3832 thread
= any_live_thread_of_process (inf
->pid
);
3833 notice_new_inferior (thread
->ptid
,
3834 thread
->state
== THREAD_RUNNING
,
3839 /* If all-stop on top of non-stop, pause all threads. Note this
3840 records the threads' stop pc, so must be done after "noticing"
3844 stop_all_threads ();
3846 /* If all threads of an inferior were already stopped, we
3847 haven't setup the inferior yet. */
3853 if (inf
->needs_setup
)
3855 thread
= any_live_thread_of_process (inf
->pid
);
3856 switch_to_thread_no_regs (thread
);
3862 /* Now go over all threads that are stopped, and print their current
3863 frame. If all-stop, then if there's a signalled thread, pick
3865 ALL_NON_EXITED_THREADS (thread
)
3867 struct target_waitstatus
*ws
;
3873 set_running (thread
->ptid
, 0);
3874 else if (thread
->state
!= THREAD_STOPPED
)
3877 ws
= &thread
->suspend
.waitstatus
;
3879 if (selected
== NULL
3880 && thread
->suspend
.waitstatus_pending_p
)
3883 if (lowest_stopped
== NULL
|| thread
->num
< lowest_stopped
->num
)
3884 lowest_stopped
= thread
;
3887 print_one_stopped_thread (thread
);
3890 /* In all-stop, we only print the status of one thread, and leave
3891 others with their status pending. */
3896 thread
= lowest_stopped
;
3900 print_one_stopped_thread (thread
);
3903 /* For "info program". */
3904 thread
= inferior_thread ();
3905 if (thread
->state
== THREAD_STOPPED
)
3906 set_last_target_status (inferior_ptid
, thread
->suspend
.waitstatus
);
3910 remote_start_remote (int from_tty
, struct target_ops
*target
, int extended_p
)
3912 struct remote_state
*rs
= get_remote_state ();
3913 struct packet_config
*noack_config
;
3914 char *wait_status
= NULL
;
3916 immediate_quit
++; /* Allow user to interrupt it. */
3919 if (interrupt_on_connect
)
3920 send_interrupt_sequence ();
3922 /* Ack any packet which the remote side has already sent. */
3923 serial_write (rs
->remote_desc
, "+", 1);
3925 /* Signal other parts that we're going through the initial setup,
3926 and so things may not be stable yet. */
3927 rs
->starting_up
= 1;
3929 /* The first packet we send to the target is the optional "supported
3930 packets" request. If the target can answer this, it will tell us
3931 which later probes to skip. */
3932 remote_query_supported ();
3934 /* If the stub wants to get a QAllow, compose one and send it. */
3935 if (packet_support (PACKET_QAllow
) != PACKET_DISABLE
)
3936 remote_set_permissions (target
);
3938 /* Next, we possibly activate noack mode.
3940 If the QStartNoAckMode packet configuration is set to AUTO,
3941 enable noack mode if the stub reported a wish for it with
3944 If set to TRUE, then enable noack mode even if the stub didn't
3945 report it in qSupported. If the stub doesn't reply OK, the
3946 session ends with an error.
3948 If FALSE, then don't activate noack mode, regardless of what the
3949 stub claimed should be the default with qSupported. */
3951 noack_config
= &remote_protocol_packets
[PACKET_QStartNoAckMode
];
3952 if (packet_config_support (noack_config
) != PACKET_DISABLE
)
3954 putpkt ("QStartNoAckMode");
3955 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3956 if (packet_ok (rs
->buf
, noack_config
) == PACKET_OK
)
3962 /* Tell the remote that we are using the extended protocol. */
3964 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3967 /* Let the target know which signals it is allowed to pass down to
3969 update_signals_program_target ();
3971 /* Next, if the target can specify a description, read it. We do
3972 this before anything involving memory or registers. */
3973 target_find_description ();
3975 /* Next, now that we know something about the target, update the
3976 address spaces in the program spaces. */
3977 update_address_spaces ();
3979 /* On OSs where the list of libraries is global to all
3980 processes, we fetch them early. */
3981 if (gdbarch_has_global_solist (target_gdbarch ()))
3982 solib_add (NULL
, from_tty
, target
, auto_solib_add
);
3984 if (target_is_non_stop_p ())
3986 if (packet_support (PACKET_QNonStop
) != PACKET_ENABLE
)
3987 error (_("Non-stop mode requested, but remote "
3988 "does not support non-stop"));
3990 putpkt ("QNonStop:1");
3991 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3993 if (strcmp (rs
->buf
, "OK") != 0)
3994 error (_("Remote refused setting non-stop mode with: %s"), rs
->buf
);
3996 /* Find about threads and processes the stub is already
3997 controlling. We default to adding them in the running state.
3998 The '?' query below will then tell us about which threads are
4000 remote_update_thread_list (target
);
4002 else if (packet_support (PACKET_QNonStop
) == PACKET_ENABLE
)
4004 /* Don't assume that the stub can operate in all-stop mode.
4005 Request it explicitly. */
4006 putpkt ("QNonStop:0");
4007 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4009 if (strcmp (rs
->buf
, "OK") != 0)
4010 error (_("Remote refused setting all-stop mode with: %s"), rs
->buf
);
4013 /* Upload TSVs regardless of whether the target is running or not. The
4014 remote stub, such as GDBserver, may have some predefined or builtin
4015 TSVs, even if the target is not running. */
4016 if (remote_get_trace_status (target
, current_trace_status ()) != -1)
4018 struct uploaded_tsv
*uploaded_tsvs
= NULL
;
4020 remote_upload_trace_state_variables (target
, &uploaded_tsvs
);
4021 merge_uploaded_trace_state_variables (&uploaded_tsvs
);
4024 /* Check whether the target is running now. */
4026 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4028 if (!target_is_non_stop_p ())
4032 struct inferior
*inf
;
4034 if (rs
->buf
[0] == 'W' || rs
->buf
[0] == 'X')
4037 error (_("The target is not running (try extended-remote?)"));
4039 /* We're connected, but not running. Drop out before we
4040 call start_remote. */
4041 rs
->starting_up
= 0;
4046 /* Save the reply for later. */
4047 wait_status
= (char *) alloca (strlen (rs
->buf
) + 1);
4048 strcpy (wait_status
, rs
->buf
);
4051 /* Fetch thread list. */
4052 target_update_thread_list ();
4054 /* Let the stub know that we want it to return the thread. */
4055 set_continue_thread (minus_one_ptid
);
4057 if (thread_count () == 0)
4059 /* Target has no concept of threads at all. GDB treats
4060 non-threaded target as single-threaded; add a main
4062 add_current_inferior_and_thread (wait_status
);
4066 /* We have thread information; select the thread the target
4067 says should be current. If we're reconnecting to a
4068 multi-threaded program, this will ideally be the thread
4069 that last reported an event before GDB disconnected. */
4070 inferior_ptid
= get_current_thread (wait_status
);
4071 if (ptid_equal (inferior_ptid
, null_ptid
))
4073 /* Odd... The target was able to list threads, but not
4074 tell us which thread was current (no "thread"
4075 register in T stop reply?). Just pick the first
4076 thread in the thread list then. */
4079 fprintf_unfiltered (gdb_stdlog
,
4080 "warning: couldn't determine remote "
4081 "current thread; picking first in list.\n");
4083 inferior_ptid
= thread_list
->ptid
;
4087 /* init_wait_for_inferior should be called before get_offsets in order
4088 to manage `inserted' flag in bp loc in a correct state.
4089 breakpoint_init_inferior, called from init_wait_for_inferior, set
4090 `inserted' flag to 0, while before breakpoint_re_set, called from
4091 start_remote, set `inserted' flag to 1. In the initialization of
4092 inferior, breakpoint_init_inferior should be called first, and then
4093 breakpoint_re_set can be called. If this order is broken, state of
4094 `inserted' flag is wrong, and cause some problems on breakpoint
4096 init_wait_for_inferior ();
4098 get_offsets (); /* Get text, data & bss offsets. */
4100 /* If we could not find a description using qXfer, and we know
4101 how to do it some other way, try again. This is not
4102 supported for non-stop; it could be, but it is tricky if
4103 there are no stopped threads when we connect. */
4104 if (remote_read_description_p (target
)
4105 && gdbarch_target_desc (target_gdbarch ()) == NULL
)
4107 target_clear_description ();
4108 target_find_description ();
4111 /* Use the previously fetched status. */
4112 gdb_assert (wait_status
!= NULL
);
4113 strcpy (rs
->buf
, wait_status
);
4114 rs
->cached_wait_status
= 1;
4117 start_remote (from_tty
); /* Initialize gdb process mechanisms. */
4121 /* Clear WFI global state. Do this before finding about new
4122 threads and inferiors, and setting the current inferior.
4123 Otherwise we would clear the proceed status of the current
4124 inferior when we want its stop_soon state to be preserved
4125 (see notice_new_inferior). */
4126 init_wait_for_inferior ();
4128 /* In non-stop, we will either get an "OK", meaning that there
4129 are no stopped threads at this time; or, a regular stop
4130 reply. In the latter case, there may be more than one thread
4131 stopped --- we pull them all out using the vStopped
4133 if (strcmp (rs
->buf
, "OK") != 0)
4135 struct notif_client
*notif
= ¬if_client_stop
;
4137 /* remote_notif_get_pending_replies acks this one, and gets
4139 rs
->notif_state
->pending_event
[notif_client_stop
.id
]
4140 = remote_notif_parse (notif
, rs
->buf
);
4141 remote_notif_get_pending_events (notif
);
4144 if (thread_count () == 0)
4147 error (_("The target is not running (try extended-remote?)"));
4149 /* We're connected, but not running. Drop out before we
4150 call start_remote. */
4151 rs
->starting_up
= 0;
4155 /* In non-stop mode, any cached wait status will be stored in
4156 the stop reply queue. */
4157 gdb_assert (wait_status
== NULL
);
4159 /* Report all signals during attach/startup. */
4160 remote_pass_signals (target
, 0, NULL
);
4162 /* If there are already stopped threads, mark them stopped and
4163 report their stops before giving the prompt to the user. */
4164 process_initial_stop_replies (from_tty
);
4166 if (target_can_async_p ())
4170 /* If we connected to a live target, do some additional setup. */
4171 if (target_has_execution
)
4173 if (symfile_objfile
) /* No use without a symbol-file. */
4174 remote_check_symbols ();
4177 /* Possibly the target has been engaged in a trace run started
4178 previously; find out where things are at. */
4179 if (remote_get_trace_status (target
, current_trace_status ()) != -1)
4181 struct uploaded_tp
*uploaded_tps
= NULL
;
4183 if (current_trace_status ()->running
)
4184 printf_filtered (_("Trace is already running on the target.\n"));
4186 remote_upload_tracepoints (target
, &uploaded_tps
);
4188 merge_uploaded_tracepoints (&uploaded_tps
);
4191 /* The thread and inferior lists are now synchronized with the
4192 target, our symbols have been relocated, and we're merged the
4193 target's tracepoints with ours. We're done with basic start
4195 rs
->starting_up
= 0;
4197 /* Maybe breakpoints are global and need to be inserted now. */
4198 if (breakpoints_should_be_inserted_now ())
4199 insert_breakpoints ();
4202 /* Open a connection to a remote debugger.
4203 NAME is the filename used for communication. */
4206 remote_open (const char *name
, int from_tty
)
4208 remote_open_1 (name
, from_tty
, &remote_ops
, 0);
4211 /* Open a connection to a remote debugger using the extended
4212 remote gdb protocol. NAME is the filename used for communication. */
4215 extended_remote_open (const char *name
, int from_tty
)
4217 remote_open_1 (name
, from_tty
, &extended_remote_ops
, 1 /*extended_p */);
4220 /* Reset all packets back to "unknown support". Called when opening a
4221 new connection to a remote target. */
4224 reset_all_packet_configs_support (void)
4228 for (i
= 0; i
< PACKET_MAX
; i
++)
4229 remote_protocol_packets
[i
].support
= PACKET_SUPPORT_UNKNOWN
;
4232 /* Initialize all packet configs. */
4235 init_all_packet_configs (void)
4239 for (i
= 0; i
< PACKET_MAX
; i
++)
4241 remote_protocol_packets
[i
].detect
= AUTO_BOOLEAN_AUTO
;
4242 remote_protocol_packets
[i
].support
= PACKET_SUPPORT_UNKNOWN
;
4246 /* Symbol look-up. */
4249 remote_check_symbols (void)
4251 struct remote_state
*rs
= get_remote_state ();
4252 char *msg
, *reply
, *tmp
;
4253 struct bound_minimal_symbol sym
;
4255 struct cleanup
*old_chain
;
4257 /* The remote side has no concept of inferiors that aren't running
4258 yet, it only knows about running processes. If we're connected
4259 but our current inferior is not running, we should not invite the
4260 remote target to request symbol lookups related to its
4261 (unrelated) current process. */
4262 if (!target_has_execution
)
4265 if (packet_support (PACKET_qSymbol
) == PACKET_DISABLE
)
4268 /* Make sure the remote is pointing at the right process. Note
4269 there's no way to select "no process". */
4270 set_general_process ();
4272 /* Allocate a message buffer. We can't reuse the input buffer in RS,
4273 because we need both at the same time. */
4274 msg
= (char *) xmalloc (get_remote_packet_size ());
4275 old_chain
= make_cleanup (xfree
, msg
);
4277 /* Invite target to request symbol lookups. */
4279 putpkt ("qSymbol::");
4280 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4281 packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_qSymbol
]);
4284 while (startswith (reply
, "qSymbol:"))
4286 struct bound_minimal_symbol sym
;
4289 end
= hex2bin (tmp
, (gdb_byte
*) msg
, strlen (tmp
) / 2);
4291 sym
= lookup_minimal_symbol (msg
, NULL
, NULL
);
4292 if (sym
.minsym
== NULL
)
4293 xsnprintf (msg
, get_remote_packet_size (), "qSymbol::%s", &reply
[8]);
4296 int addr_size
= gdbarch_addr_bit (target_gdbarch ()) / 8;
4297 CORE_ADDR sym_addr
= BMSYMBOL_VALUE_ADDRESS (sym
);
4299 /* If this is a function address, return the start of code
4300 instead of any data function descriptor. */
4301 sym_addr
= gdbarch_convert_from_func_ptr_addr (target_gdbarch (),
4305 xsnprintf (msg
, get_remote_packet_size (), "qSymbol:%s:%s",
4306 phex_nz (sym_addr
, addr_size
), &reply
[8]);
4310 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4314 do_cleanups (old_chain
);
4317 static struct serial
*
4318 remote_serial_open (const char *name
)
4320 static int udp_warning
= 0;
4322 /* FIXME: Parsing NAME here is a hack. But we want to warn here instead
4323 of in ser-tcp.c, because it is the remote protocol assuming that the
4324 serial connection is reliable and not the serial connection promising
4326 if (!udp_warning
&& startswith (name
, "udp:"))
4328 warning (_("The remote protocol may be unreliable over UDP.\n"
4329 "Some events may be lost, rendering further debugging "
4334 return serial_open (name
);
4337 /* Inform the target of our permission settings. The permission flags
4338 work without this, but if the target knows the settings, it can do
4339 a couple things. First, it can add its own check, to catch cases
4340 that somehow manage to get by the permissions checks in target
4341 methods. Second, if the target is wired to disallow particular
4342 settings (for instance, a system in the field that is not set up to
4343 be able to stop at a breakpoint), it can object to any unavailable
4347 remote_set_permissions (struct target_ops
*self
)
4349 struct remote_state
*rs
= get_remote_state ();
4351 xsnprintf (rs
->buf
, get_remote_packet_size (), "QAllow:"
4352 "WriteReg:%x;WriteMem:%x;"
4353 "InsertBreak:%x;InsertTrace:%x;"
4354 "InsertFastTrace:%x;Stop:%x",
4355 may_write_registers
, may_write_memory
,
4356 may_insert_breakpoints
, may_insert_tracepoints
,
4357 may_insert_fast_tracepoints
, may_stop
);
4359 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4361 /* If the target didn't like the packet, warn the user. Do not try
4362 to undo the user's settings, that would just be maddening. */
4363 if (strcmp (rs
->buf
, "OK") != 0)
4364 warning (_("Remote refused setting permissions with: %s"), rs
->buf
);
4367 /* This type describes each known response to the qSupported
4369 struct protocol_feature
4371 /* The name of this protocol feature. */
4374 /* The default for this protocol feature. */
4375 enum packet_support default_support
;
4377 /* The function to call when this feature is reported, or after
4378 qSupported processing if the feature is not supported.
4379 The first argument points to this structure. The second
4380 argument indicates whether the packet requested support be
4381 enabled, disabled, or probed (or the default, if this function
4382 is being called at the end of processing and this feature was
4383 not reported). The third argument may be NULL; if not NULL, it
4384 is a NUL-terminated string taken from the packet following
4385 this feature's name and an equals sign. */
4386 void (*func
) (const struct protocol_feature
*, enum packet_support
,
4389 /* The corresponding packet for this feature. Only used if
4390 FUNC is remote_supported_packet. */
4395 remote_supported_packet (const struct protocol_feature
*feature
,
4396 enum packet_support support
,
4397 const char *argument
)
4401 warning (_("Remote qSupported response supplied an unexpected value for"
4402 " \"%s\"."), feature
->name
);
4406 remote_protocol_packets
[feature
->packet
].support
= support
;
4410 remote_packet_size (const struct protocol_feature
*feature
,
4411 enum packet_support support
, const char *value
)
4413 struct remote_state
*rs
= get_remote_state ();
4418 if (support
!= PACKET_ENABLE
)
4421 if (value
== NULL
|| *value
== '\0')
4423 warning (_("Remote target reported \"%s\" without a size."),
4429 packet_size
= strtol (value
, &value_end
, 16);
4430 if (errno
!= 0 || *value_end
!= '\0' || packet_size
< 0)
4432 warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."),
4433 feature
->name
, value
);
4437 /* Record the new maximum packet size. */
4438 rs
->explicit_packet_size
= packet_size
;
4441 static const struct protocol_feature remote_protocol_features
[] = {
4442 { "PacketSize", PACKET_DISABLE
, remote_packet_size
, -1 },
4443 { "qXfer:auxv:read", PACKET_DISABLE
, remote_supported_packet
,
4444 PACKET_qXfer_auxv
},
4445 { "qXfer:exec-file:read", PACKET_DISABLE
, remote_supported_packet
,
4446 PACKET_qXfer_exec_file
},
4447 { "qXfer:features:read", PACKET_DISABLE
, remote_supported_packet
,
4448 PACKET_qXfer_features
},
4449 { "qXfer:libraries:read", PACKET_DISABLE
, remote_supported_packet
,
4450 PACKET_qXfer_libraries
},
4451 { "qXfer:libraries-svr4:read", PACKET_DISABLE
, remote_supported_packet
,
4452 PACKET_qXfer_libraries_svr4
},
4453 { "augmented-libraries-svr4-read", PACKET_DISABLE
,
4454 remote_supported_packet
, PACKET_augmented_libraries_svr4_read_feature
},
4455 { "qXfer:memory-map:read", PACKET_DISABLE
, remote_supported_packet
,
4456 PACKET_qXfer_memory_map
},
4457 { "qXfer:spu:read", PACKET_DISABLE
, remote_supported_packet
,
4458 PACKET_qXfer_spu_read
},
4459 { "qXfer:spu:write", PACKET_DISABLE
, remote_supported_packet
,
4460 PACKET_qXfer_spu_write
},
4461 { "qXfer:osdata:read", PACKET_DISABLE
, remote_supported_packet
,
4462 PACKET_qXfer_osdata
},
4463 { "qXfer:threads:read", PACKET_DISABLE
, remote_supported_packet
,
4464 PACKET_qXfer_threads
},
4465 { "qXfer:traceframe-info:read", PACKET_DISABLE
, remote_supported_packet
,
4466 PACKET_qXfer_traceframe_info
},
4467 { "QPassSignals", PACKET_DISABLE
, remote_supported_packet
,
4468 PACKET_QPassSignals
},
4469 { "QProgramSignals", PACKET_DISABLE
, remote_supported_packet
,
4470 PACKET_QProgramSignals
},
4471 { "QStartNoAckMode", PACKET_DISABLE
, remote_supported_packet
,
4472 PACKET_QStartNoAckMode
},
4473 { "multiprocess", PACKET_DISABLE
, remote_supported_packet
,
4474 PACKET_multiprocess_feature
},
4475 { "QNonStop", PACKET_DISABLE
, remote_supported_packet
, PACKET_QNonStop
},
4476 { "qXfer:siginfo:read", PACKET_DISABLE
, remote_supported_packet
,
4477 PACKET_qXfer_siginfo_read
},
4478 { "qXfer:siginfo:write", PACKET_DISABLE
, remote_supported_packet
,
4479 PACKET_qXfer_siginfo_write
},
4480 { "ConditionalTracepoints", PACKET_DISABLE
, remote_supported_packet
,
4481 PACKET_ConditionalTracepoints
},
4482 { "ConditionalBreakpoints", PACKET_DISABLE
, remote_supported_packet
,
4483 PACKET_ConditionalBreakpoints
},
4484 { "BreakpointCommands", PACKET_DISABLE
, remote_supported_packet
,
4485 PACKET_BreakpointCommands
},
4486 { "FastTracepoints", PACKET_DISABLE
, remote_supported_packet
,
4487 PACKET_FastTracepoints
},
4488 { "StaticTracepoints", PACKET_DISABLE
, remote_supported_packet
,
4489 PACKET_StaticTracepoints
},
4490 {"InstallInTrace", PACKET_DISABLE
, remote_supported_packet
,
4491 PACKET_InstallInTrace
},
4492 { "DisconnectedTracing", PACKET_DISABLE
, remote_supported_packet
,
4493 PACKET_DisconnectedTracing_feature
},
4494 { "ReverseContinue", PACKET_DISABLE
, remote_supported_packet
,
4496 { "ReverseStep", PACKET_DISABLE
, remote_supported_packet
,
4498 { "TracepointSource", PACKET_DISABLE
, remote_supported_packet
,
4499 PACKET_TracepointSource
},
4500 { "QAllow", PACKET_DISABLE
, remote_supported_packet
,
4502 { "EnableDisableTracepoints", PACKET_DISABLE
, remote_supported_packet
,
4503 PACKET_EnableDisableTracepoints_feature
},
4504 { "qXfer:fdpic:read", PACKET_DISABLE
, remote_supported_packet
,
4505 PACKET_qXfer_fdpic
},
4506 { "qXfer:uib:read", PACKET_DISABLE
, remote_supported_packet
,
4508 { "QDisableRandomization", PACKET_DISABLE
, remote_supported_packet
,
4509 PACKET_QDisableRandomization
},
4510 { "QAgent", PACKET_DISABLE
, remote_supported_packet
, PACKET_QAgent
},
4511 { "QTBuffer:size", PACKET_DISABLE
,
4512 remote_supported_packet
, PACKET_QTBuffer_size
},
4513 { "tracenz", PACKET_DISABLE
, remote_supported_packet
, PACKET_tracenz_feature
},
4514 { "Qbtrace:off", PACKET_DISABLE
, remote_supported_packet
, PACKET_Qbtrace_off
},
4515 { "Qbtrace:bts", PACKET_DISABLE
, remote_supported_packet
, PACKET_Qbtrace_bts
},
4516 { "Qbtrace:pt", PACKET_DISABLE
, remote_supported_packet
, PACKET_Qbtrace_pt
},
4517 { "qXfer:btrace:read", PACKET_DISABLE
, remote_supported_packet
,
4518 PACKET_qXfer_btrace
},
4519 { "qXfer:btrace-conf:read", PACKET_DISABLE
, remote_supported_packet
,
4520 PACKET_qXfer_btrace_conf
},
4521 { "Qbtrace-conf:bts:size", PACKET_DISABLE
, remote_supported_packet
,
4522 PACKET_Qbtrace_conf_bts_size
},
4523 { "swbreak", PACKET_DISABLE
, remote_supported_packet
, PACKET_swbreak_feature
},
4524 { "hwbreak", PACKET_DISABLE
, remote_supported_packet
, PACKET_hwbreak_feature
},
4525 { "fork-events", PACKET_DISABLE
, remote_supported_packet
,
4526 PACKET_fork_event_feature
},
4527 { "vfork-events", PACKET_DISABLE
, remote_supported_packet
,
4528 PACKET_vfork_event_feature
},
4529 { "exec-events", PACKET_DISABLE
, remote_supported_packet
,
4530 PACKET_exec_event_feature
},
4531 { "Qbtrace-conf:pt:size", PACKET_DISABLE
, remote_supported_packet
,
4532 PACKET_Qbtrace_conf_pt_size
},
4533 { "vContSupported", PACKET_DISABLE
, remote_supported_packet
, PACKET_vContSupported
},
4534 { "QThreadEvents", PACKET_DISABLE
, remote_supported_packet
, PACKET_QThreadEvents
},
4535 { "no-resumed", PACKET_DISABLE
, remote_supported_packet
, PACKET_no_resumed
},
4538 static char *remote_support_xml
;
4540 /* Register string appended to "xmlRegisters=" in qSupported query. */
4543 register_remote_support_xml (const char *xml
)
4545 #if defined(HAVE_LIBEXPAT)
4546 if (remote_support_xml
== NULL
)
4547 remote_support_xml
= concat ("xmlRegisters=", xml
, (char *) NULL
);
4550 char *copy
= xstrdup (remote_support_xml
+ 13);
4551 char *p
= strtok (copy
, ",");
4555 if (strcmp (p
, xml
) == 0)
4562 while ((p
= strtok (NULL
, ",")) != NULL
);
4565 remote_support_xml
= reconcat (remote_support_xml
,
4566 remote_support_xml
, ",", xml
,
4573 remote_query_supported_append (char *msg
, const char *append
)
4576 return reconcat (msg
, msg
, ";", append
, (char *) NULL
);
4578 return xstrdup (append
);
4582 remote_query_supported (void)
4584 struct remote_state
*rs
= get_remote_state ();
4587 unsigned char seen
[ARRAY_SIZE (remote_protocol_features
)];
4589 /* The packet support flags are handled differently for this packet
4590 than for most others. We treat an error, a disabled packet, and
4591 an empty response identically: any features which must be reported
4592 to be used will be automatically disabled. An empty buffer
4593 accomplishes this, since that is also the representation for a list
4594 containing no features. */
4597 if (packet_support (PACKET_qSupported
) != PACKET_DISABLE
)
4600 struct cleanup
*old_chain
= make_cleanup (free_current_contents
, &q
);
4602 if (packet_set_cmd_state (PACKET_multiprocess_feature
) != AUTO_BOOLEAN_FALSE
)
4603 q
= remote_query_supported_append (q
, "multiprocess+");
4605 if (packet_set_cmd_state (PACKET_swbreak_feature
) != AUTO_BOOLEAN_FALSE
)
4606 q
= remote_query_supported_append (q
, "swbreak+");
4607 if (packet_set_cmd_state (PACKET_hwbreak_feature
) != AUTO_BOOLEAN_FALSE
)
4608 q
= remote_query_supported_append (q
, "hwbreak+");
4610 q
= remote_query_supported_append (q
, "qRelocInsn+");
4614 if (packet_set_cmd_state (PACKET_fork_event_feature
)
4615 != AUTO_BOOLEAN_FALSE
)
4616 q
= remote_query_supported_append (q
, "fork-events+");
4617 if (packet_set_cmd_state (PACKET_vfork_event_feature
)
4618 != AUTO_BOOLEAN_FALSE
)
4619 q
= remote_query_supported_append (q
, "vfork-events+");
4620 if (packet_set_cmd_state (PACKET_exec_event_feature
)
4621 != AUTO_BOOLEAN_FALSE
)
4622 q
= remote_query_supported_append (q
, "exec-events+");
4625 if (packet_set_cmd_state (PACKET_vContSupported
) != AUTO_BOOLEAN_FALSE
)
4626 q
= remote_query_supported_append (q
, "vContSupported+");
4628 if (packet_set_cmd_state (PACKET_QThreadEvents
) != AUTO_BOOLEAN_FALSE
)
4629 q
= remote_query_supported_append (q
, "QThreadEvents+");
4631 if (packet_set_cmd_state (PACKET_no_resumed
) != AUTO_BOOLEAN_FALSE
)
4632 q
= remote_query_supported_append (q
, "no-resumed+");
4634 /* Keep this one last to work around a gdbserver <= 7.10 bug in
4635 the qSupported:xmlRegisters=i386 handling. */
4636 if (remote_support_xml
!= NULL
)
4637 q
= remote_query_supported_append (q
, remote_support_xml
);
4639 q
= reconcat (q
, "qSupported:", q
, (char *) NULL
);
4642 do_cleanups (old_chain
);
4644 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4646 /* If an error occured, warn, but do not return - just reset the
4647 buffer to empty and go on to disable features. */
4648 if (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_qSupported
])
4651 warning (_("Remote failure reply: %s"), rs
->buf
);
4656 memset (seen
, 0, sizeof (seen
));
4661 enum packet_support is_supported
;
4662 char *p
, *end
, *name_end
, *value
;
4664 /* First separate out this item from the rest of the packet. If
4665 there's another item after this, we overwrite the separator
4666 (terminated strings are much easier to work with). */
4668 end
= strchr (p
, ';');
4671 end
= p
+ strlen (p
);
4681 warning (_("empty item in \"qSupported\" response"));
4686 name_end
= strchr (p
, '=');
4689 /* This is a name=value entry. */
4690 is_supported
= PACKET_ENABLE
;
4691 value
= name_end
+ 1;
4700 is_supported
= PACKET_ENABLE
;
4704 is_supported
= PACKET_DISABLE
;
4708 is_supported
= PACKET_SUPPORT_UNKNOWN
;
4712 warning (_("unrecognized item \"%s\" "
4713 "in \"qSupported\" response"), p
);
4719 for (i
= 0; i
< ARRAY_SIZE (remote_protocol_features
); i
++)
4720 if (strcmp (remote_protocol_features
[i
].name
, p
) == 0)
4722 const struct protocol_feature
*feature
;
4725 feature
= &remote_protocol_features
[i
];
4726 feature
->func (feature
, is_supported
, value
);
4731 /* If we increased the packet size, make sure to increase the global
4732 buffer size also. We delay this until after parsing the entire
4733 qSupported packet, because this is the same buffer we were
4735 if (rs
->buf_size
< rs
->explicit_packet_size
)
4737 rs
->buf_size
= rs
->explicit_packet_size
;
4738 rs
->buf
= (char *) xrealloc (rs
->buf
, rs
->buf_size
);
4741 /* Handle the defaults for unmentioned features. */
4742 for (i
= 0; i
< ARRAY_SIZE (remote_protocol_features
); i
++)
4745 const struct protocol_feature
*feature
;
4747 feature
= &remote_protocol_features
[i
];
4748 feature
->func (feature
, feature
->default_support
, NULL
);
4752 /* Remove any of the remote.c targets from target stack. Upper targets depend
4753 on it so remove them first. */
4756 remote_unpush_target (void)
4758 pop_all_targets_at_and_above (process_stratum
);
4762 remote_open_1 (const char *name
, int from_tty
,
4763 struct target_ops
*target
, int extended_p
)
4765 struct remote_state
*rs
= get_remote_state ();
4768 error (_("To open a remote debug connection, you need to specify what\n"
4769 "serial device is attached to the remote system\n"
4770 "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."));
4772 /* See FIXME above. */
4773 if (!target_async_permitted
)
4774 wait_forever_enabled_p
= 1;
4776 /* If we're connected to a running target, target_preopen will kill it.
4777 Ask this question first, before target_preopen has a chance to kill
4779 if (rs
->remote_desc
!= NULL
&& !have_inferiors ())
4782 && !query (_("Already connected to a remote target. Disconnect? ")))
4783 error (_("Still connected."));
4786 /* Here the possibly existing remote target gets unpushed. */
4787 target_preopen (from_tty
);
4789 /* Make sure we send the passed signals list the next time we resume. */
4790 xfree (rs
->last_pass_packet
);
4791 rs
->last_pass_packet
= NULL
;
4793 /* Make sure we send the program signals list the next time we
4795 xfree (rs
->last_program_signals_packet
);
4796 rs
->last_program_signals_packet
= NULL
;
4798 remote_fileio_reset ();
4799 reopen_exec_file ();
4802 rs
->remote_desc
= remote_serial_open (name
);
4803 if (!rs
->remote_desc
)
4804 perror_with_name (name
);
4806 if (baud_rate
!= -1)
4808 if (serial_setbaudrate (rs
->remote_desc
, baud_rate
))
4810 /* The requested speed could not be set. Error out to
4811 top level after closing remote_desc. Take care to
4812 set remote_desc to NULL to avoid closing remote_desc
4814 serial_close (rs
->remote_desc
);
4815 rs
->remote_desc
= NULL
;
4816 perror_with_name (name
);
4820 serial_setparity (rs
->remote_desc
, serial_parity
);
4821 serial_raw (rs
->remote_desc
);
4823 /* If there is something sitting in the buffer we might take it as a
4824 response to a command, which would be bad. */
4825 serial_flush_input (rs
->remote_desc
);
4829 puts_filtered ("Remote debugging using ");
4830 puts_filtered (name
);
4831 puts_filtered ("\n");
4833 push_target (target
); /* Switch to using remote target now. */
4835 /* Register extra event sources in the event loop. */
4836 remote_async_inferior_event_token
4837 = create_async_event_handler (remote_async_inferior_event_handler
,
4839 rs
->notif_state
= remote_notif_state_allocate ();
4841 /* Reset the target state; these things will be queried either by
4842 remote_query_supported or as they are needed. */
4843 reset_all_packet_configs_support ();
4844 rs
->cached_wait_status
= 0;
4845 rs
->explicit_packet_size
= 0;
4847 rs
->extended
= extended_p
;
4848 rs
->waiting_for_stop_reply
= 0;
4849 rs
->ctrlc_pending_p
= 0;
4851 rs
->general_thread
= not_sent_ptid
;
4852 rs
->continue_thread
= not_sent_ptid
;
4853 rs
->remote_traceframe_number
= -1;
4855 /* Probe for ability to use "ThreadInfo" query, as required. */
4856 rs
->use_threadinfo_query
= 1;
4857 rs
->use_threadextra_query
= 1;
4859 readahead_cache_invalidate ();
4861 if (target_async_permitted
)
4863 /* With this target we start out by owning the terminal. */
4864 remote_async_terminal_ours_p
= 1;
4866 /* FIXME: cagney/1999-09-23: During the initial connection it is
4867 assumed that the target is already ready and able to respond to
4868 requests. Unfortunately remote_start_remote() eventually calls
4869 wait_for_inferior() with no timeout. wait_forever_enabled_p gets
4870 around this. Eventually a mechanism that allows
4871 wait_for_inferior() to expect/get timeouts will be
4873 wait_forever_enabled_p
= 0;
4876 /* First delete any symbols previously loaded from shared libraries. */
4877 no_shared_libraries (NULL
, 0);
4880 init_thread_list ();
4882 /* Start the remote connection. If error() or QUIT, discard this
4883 target (we'd otherwise be in an inconsistent state) and then
4884 propogate the error on up the exception chain. This ensures that
4885 the caller doesn't stumble along blindly assuming that the
4886 function succeeded. The CLI doesn't have this problem but other
4887 UI's, such as MI do.
4889 FIXME: cagney/2002-05-19: Instead of re-throwing the exception,
4890 this function should return an error indication letting the
4891 caller restore the previous state. Unfortunately the command
4892 ``target remote'' is directly wired to this function making that
4893 impossible. On a positive note, the CLI side of this problem has
4894 been fixed - the function set_cmd_context() makes it possible for
4895 all the ``target ....'' commands to share a common callback
4896 function. See cli-dump.c. */
4901 remote_start_remote (from_tty
, target
, extended_p
);
4903 CATCH (ex
, RETURN_MASK_ALL
)
4905 /* Pop the partially set up target - unless something else did
4906 already before throwing the exception. */
4907 if (rs
->remote_desc
!= NULL
)
4908 remote_unpush_target ();
4909 if (target_async_permitted
)
4910 wait_forever_enabled_p
= 1;
4911 throw_exception (ex
);
4916 remote_btrace_reset ();
4918 if (target_async_permitted
)
4919 wait_forever_enabled_p
= 1;
4922 /* Detach the specified process. */
4925 remote_detach_pid (int pid
)
4927 struct remote_state
*rs
= get_remote_state ();
4929 if (remote_multi_process_p (rs
))
4930 xsnprintf (rs
->buf
, get_remote_packet_size (), "D;%x", pid
);
4932 strcpy (rs
->buf
, "D");
4935 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4937 if (rs
->buf
[0] == 'O' && rs
->buf
[1] == 'K')
4939 else if (rs
->buf
[0] == '\0')
4940 error (_("Remote doesn't know how to detach"));
4942 error (_("Can't detach process."));
4945 /* This detaches a program to which we previously attached, using
4946 inferior_ptid to identify the process. After this is done, GDB
4947 can be used to debug some other program. We better not have left
4948 any breakpoints in the target program or it'll die when it hits
4952 remote_detach_1 (const char *args
, int from_tty
)
4954 int pid
= ptid_get_pid (inferior_ptid
);
4955 struct remote_state
*rs
= get_remote_state ();
4956 struct thread_info
*tp
= find_thread_ptid (inferior_ptid
);
4960 error (_("Argument given to \"detach\" when remotely debugging."));
4962 if (!target_has_execution
)
4963 error (_("No process to detach from."));
4967 char *exec_file
= get_exec_file (0);
4968 if (exec_file
== NULL
)
4970 printf_unfiltered (_("Detaching from program: %s, %s\n"), exec_file
,
4971 target_pid_to_str (pid_to_ptid (pid
)));
4972 gdb_flush (gdb_stdout
);
4975 /* Tell the remote target to detach. */
4976 remote_detach_pid (pid
);
4978 if (from_tty
&& !rs
->extended
)
4979 puts_filtered (_("Ending remote debugging.\n"));
4981 /* Check to see if we are detaching a fork parent. Note that if we
4982 are detaching a fork child, tp == NULL. */
4983 is_fork_parent
= (tp
!= NULL
4984 && tp
->pending_follow
.kind
== TARGET_WAITKIND_FORKED
);
4986 /* If doing detach-on-fork, we don't mourn, because that will delete
4987 breakpoints that should be available for the followed inferior. */
4988 if (!is_fork_parent
)
4989 target_mourn_inferior ();
4992 inferior_ptid
= null_ptid
;
4993 detach_inferior (pid
);
4998 remote_detach (struct target_ops
*ops
, const char *args
, int from_tty
)
5000 remote_detach_1 (args
, from_tty
);
5004 extended_remote_detach (struct target_ops
*ops
, const char *args
, int from_tty
)
5006 remote_detach_1 (args
, from_tty
);
5009 /* Target follow-fork function for remote targets. On entry, and
5010 at return, the current inferior is the fork parent.
5012 Note that although this is currently only used for extended-remote,
5013 it is named remote_follow_fork in anticipation of using it for the
5014 remote target as well. */
5017 remote_follow_fork (struct target_ops
*ops
, int follow_child
,
5020 struct remote_state
*rs
= get_remote_state ();
5021 enum target_waitkind kind
= inferior_thread ()->pending_follow
.kind
;
5023 if ((kind
== TARGET_WAITKIND_FORKED
&& remote_fork_event_p (rs
))
5024 || (kind
== TARGET_WAITKIND_VFORKED
&& remote_vfork_event_p (rs
)))
5026 /* When following the parent and detaching the child, we detach
5027 the child here. For the case of following the child and
5028 detaching the parent, the detach is done in the target-
5029 independent follow fork code in infrun.c. We can't use
5030 target_detach when detaching an unfollowed child because
5031 the client side doesn't know anything about the child. */
5032 if (detach_fork
&& !follow_child
)
5034 /* Detach the fork child. */
5038 child_ptid
= inferior_thread ()->pending_follow
.value
.related_pid
;
5039 child_pid
= ptid_get_pid (child_ptid
);
5041 remote_detach_pid (child_pid
);
5042 detach_inferior (child_pid
);
5048 /* Target follow-exec function for remote targets. Save EXECD_PATHNAME
5049 in the program space of the new inferior. On entry and at return the
5050 current inferior is the exec'ing inferior. INF is the new exec'd
5051 inferior, which may be the same as the exec'ing inferior unless
5052 follow-exec-mode is "new". */
5055 remote_follow_exec (struct target_ops
*ops
,
5056 struct inferior
*inf
, char *execd_pathname
)
5058 /* We know that this is a target file name, so if it has the "target:"
5059 prefix we strip it off before saving it in the program space. */
5060 if (is_target_filename (execd_pathname
))
5061 execd_pathname
+= strlen (TARGET_SYSROOT_PREFIX
);
5063 set_pspace_remote_exec_file (inf
->pspace
, execd_pathname
);
5066 /* Same as remote_detach, but don't send the "D" packet; just disconnect. */
5069 remote_disconnect (struct target_ops
*target
, const char *args
, int from_tty
)
5072 error (_("Argument given to \"disconnect\" when remotely debugging."));
5074 /* Make sure we unpush even the extended remote targets; mourn
5075 won't do it. So call remote_mourn directly instead of
5076 target_mourn_inferior. */
5077 remote_mourn (target
);
5080 puts_filtered ("Ending remote debugging.\n");
5083 /* Attach to the process specified by ARGS. If FROM_TTY is non-zero,
5084 be chatty about it. */
5087 extended_remote_attach (struct target_ops
*target
, const char *args
,
5090 struct remote_state
*rs
= get_remote_state ();
5092 char *wait_status
= NULL
;
5094 pid
= parse_pid_to_attach (args
);
5096 /* Remote PID can be freely equal to getpid, do not check it here the same
5097 way as in other targets. */
5099 if (packet_support (PACKET_vAttach
) == PACKET_DISABLE
)
5100 error (_("This target does not support attaching to a process"));
5104 char *exec_file
= get_exec_file (0);
5107 printf_unfiltered (_("Attaching to program: %s, %s\n"), exec_file
,
5108 target_pid_to_str (pid_to_ptid (pid
)));
5110 printf_unfiltered (_("Attaching to %s\n"),
5111 target_pid_to_str (pid_to_ptid (pid
)));
5113 gdb_flush (gdb_stdout
);
5116 xsnprintf (rs
->buf
, get_remote_packet_size (), "vAttach;%x", pid
);
5118 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5120 switch (packet_ok (rs
->buf
,
5121 &remote_protocol_packets
[PACKET_vAttach
]))
5124 if (!target_is_non_stop_p ())
5126 /* Save the reply for later. */
5127 wait_status
= (char *) alloca (strlen (rs
->buf
) + 1);
5128 strcpy (wait_status
, rs
->buf
);
5130 else if (strcmp (rs
->buf
, "OK") != 0)
5131 error (_("Attaching to %s failed with: %s"),
5132 target_pid_to_str (pid_to_ptid (pid
)),
5135 case PACKET_UNKNOWN
:
5136 error (_("This target does not support attaching to a process"));
5138 error (_("Attaching to %s failed"),
5139 target_pid_to_str (pid_to_ptid (pid
)));
5142 set_current_inferior (remote_add_inferior (0, pid
, 1, 0));
5144 inferior_ptid
= pid_to_ptid (pid
);
5146 if (target_is_non_stop_p ())
5148 struct thread_info
*thread
;
5150 /* Get list of threads. */
5151 remote_update_thread_list (target
);
5153 thread
= first_thread_of_process (pid
);
5155 inferior_ptid
= thread
->ptid
;
5157 inferior_ptid
= pid_to_ptid (pid
);
5159 /* Invalidate our notion of the remote current thread. */
5160 record_currthread (rs
, minus_one_ptid
);
5164 /* Now, if we have thread information, update inferior_ptid. */
5165 inferior_ptid
= remote_current_thread (inferior_ptid
);
5167 /* Add the main thread to the thread list. */
5168 add_thread_silent (inferior_ptid
);
5171 /* Next, if the target can specify a description, read it. We do
5172 this before anything involving memory or registers. */
5173 target_find_description ();
5175 if (!target_is_non_stop_p ())
5177 /* Use the previously fetched status. */
5178 gdb_assert (wait_status
!= NULL
);
5180 if (target_can_async_p ())
5182 struct notif_event
*reply
5183 = remote_notif_parse (¬if_client_stop
, wait_status
);
5185 push_stop_reply ((struct stop_reply
*) reply
);
5191 gdb_assert (wait_status
!= NULL
);
5192 strcpy (rs
->buf
, wait_status
);
5193 rs
->cached_wait_status
= 1;
5197 gdb_assert (wait_status
== NULL
);
5200 /* Implementation of the to_post_attach method. */
5203 extended_remote_post_attach (struct target_ops
*ops
, int pid
)
5205 /* Get text, data & bss offsets. */
5208 /* In certain cases GDB might not have had the chance to start
5209 symbol lookup up until now. This could happen if the debugged
5210 binary is not using shared libraries, the vsyscall page is not
5211 present (on Linux) and the binary itself hadn't changed since the
5212 debugging process was started. */
5213 if (symfile_objfile
!= NULL
)
5214 remote_check_symbols();
5218 /* Check for the availability of vCont. This function should also check
5222 remote_vcont_probe (struct remote_state
*rs
)
5226 strcpy (rs
->buf
, "vCont?");
5228 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5231 /* Make sure that the features we assume are supported. */
5232 if (startswith (buf
, "vCont"))
5235 int support_c
, support_C
;
5237 rs
->supports_vCont
.s
= 0;
5238 rs
->supports_vCont
.S
= 0;
5241 rs
->supports_vCont
.t
= 0;
5242 rs
->supports_vCont
.r
= 0;
5243 while (p
&& *p
== ';')
5246 if (*p
== 's' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
5247 rs
->supports_vCont
.s
= 1;
5248 else if (*p
== 'S' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
5249 rs
->supports_vCont
.S
= 1;
5250 else if (*p
== 'c' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
5252 else if (*p
== 'C' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
5254 else if (*p
== 't' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
5255 rs
->supports_vCont
.t
= 1;
5256 else if (*p
== 'r' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
5257 rs
->supports_vCont
.r
= 1;
5259 p
= strchr (p
, ';');
5262 /* If c, and C are not all supported, we can't use vCont. Clearing
5263 BUF will make packet_ok disable the packet. */
5264 if (!support_c
|| !support_C
)
5268 packet_ok (buf
, &remote_protocol_packets
[PACKET_vCont
]);
5271 /* Helper function for building "vCont" resumptions. Write a
5272 resumption to P. ENDP points to one-passed-the-end of the buffer
5273 we're allowed to write to. Returns BUF+CHARACTERS_WRITTEN. The
5274 thread to be resumed is PTID; STEP and SIGGNAL indicate whether the
5275 resumed thread should be single-stepped and/or signalled. If PTID
5276 equals minus_one_ptid, then all threads are resumed; if PTID
5277 represents a process, then all threads of the process are resumed;
5278 the thread to be stepped and/or signalled is given in the global
5282 append_resumption (char *p
, char *endp
,
5283 ptid_t ptid
, int step
, enum gdb_signal siggnal
)
5285 struct remote_state
*rs
= get_remote_state ();
5287 if (step
&& siggnal
!= GDB_SIGNAL_0
)
5288 p
+= xsnprintf (p
, endp
- p
, ";S%02x", siggnal
);
5290 /* GDB is willing to range step. */
5291 && use_range_stepping
5292 /* Target supports range stepping. */
5293 && rs
->supports_vCont
.r
5294 /* We don't currently support range stepping multiple
5295 threads with a wildcard (though the protocol allows it,
5296 so stubs shouldn't make an active effort to forbid
5298 && !(remote_multi_process_p (rs
) && ptid_is_pid (ptid
)))
5300 struct thread_info
*tp
;
5302 if (ptid_equal (ptid
, minus_one_ptid
))
5304 /* If we don't know about the target thread's tid, then
5305 we're resuming magic_null_ptid (see caller). */
5306 tp
= find_thread_ptid (magic_null_ptid
);
5309 tp
= find_thread_ptid (ptid
);
5310 gdb_assert (tp
!= NULL
);
5312 if (tp
->control
.may_range_step
)
5314 int addr_size
= gdbarch_addr_bit (target_gdbarch ()) / 8;
5316 p
+= xsnprintf (p
, endp
- p
, ";r%s,%s",
5317 phex_nz (tp
->control
.step_range_start
,
5319 phex_nz (tp
->control
.step_range_end
,
5323 p
+= xsnprintf (p
, endp
- p
, ";s");
5326 p
+= xsnprintf (p
, endp
- p
, ";s");
5327 else if (siggnal
!= GDB_SIGNAL_0
)
5328 p
+= xsnprintf (p
, endp
- p
, ";C%02x", siggnal
);
5330 p
+= xsnprintf (p
, endp
- p
, ";c");
5332 if (remote_multi_process_p (rs
) && ptid_is_pid (ptid
))
5336 /* All (-1) threads of process. */
5337 nptid
= ptid_build (ptid_get_pid (ptid
), -1, 0);
5339 p
+= xsnprintf (p
, endp
- p
, ":");
5340 p
= write_ptid (p
, endp
, nptid
);
5342 else if (!ptid_equal (ptid
, minus_one_ptid
))
5344 p
+= xsnprintf (p
, endp
- p
, ":");
5345 p
= write_ptid (p
, endp
, ptid
);
5351 /* Clear the thread's private info on resume. */
5354 resume_clear_thread_private_info (struct thread_info
*thread
)
5356 if (thread
->priv
!= NULL
)
5358 thread
->priv
->stop_reason
= TARGET_STOPPED_BY_NO_REASON
;
5359 thread
->priv
->watch_data_address
= 0;
5363 /* Append a vCont continue-with-signal action for threads that have a
5364 non-zero stop signal. */
5367 append_pending_thread_resumptions (char *p
, char *endp
, ptid_t ptid
)
5369 struct thread_info
*thread
;
5371 ALL_NON_EXITED_THREADS (thread
)
5372 if (ptid_match (thread
->ptid
, ptid
)
5373 && !ptid_equal (inferior_ptid
, thread
->ptid
)
5374 && thread
->suspend
.stop_signal
!= GDB_SIGNAL_0
)
5376 p
= append_resumption (p
, endp
, thread
->ptid
,
5377 0, thread
->suspend
.stop_signal
);
5378 thread
->suspend
.stop_signal
= GDB_SIGNAL_0
;
5379 resume_clear_thread_private_info (thread
);
5385 /* Resume the remote inferior by using a "vCont" packet. The thread
5386 to be resumed is PTID; STEP and SIGGNAL indicate whether the
5387 resumed thread should be single-stepped and/or signalled. If PTID
5388 equals minus_one_ptid, then all threads are resumed; the thread to
5389 be stepped and/or signalled is given in the global INFERIOR_PTID.
5390 This function returns non-zero iff it resumes the inferior.
5392 This function issues a strict subset of all possible vCont commands at the
5396 remote_vcont_resume (ptid_t ptid
, int step
, enum gdb_signal siggnal
)
5398 struct remote_state
*rs
= get_remote_state ();
5402 if (packet_support (PACKET_vCont
) == PACKET_SUPPORT_UNKNOWN
)
5403 remote_vcont_probe (rs
);
5405 if (packet_support (PACKET_vCont
) == PACKET_DISABLE
)
5409 endp
= rs
->buf
+ get_remote_packet_size ();
5411 /* If we could generate a wider range of packets, we'd have to worry
5412 about overflowing BUF. Should there be a generic
5413 "multi-part-packet" packet? */
5415 p
+= xsnprintf (p
, endp
- p
, "vCont");
5417 if (ptid_equal (ptid
, magic_null_ptid
))
5419 /* MAGIC_NULL_PTID means that we don't have any active threads,
5420 so we don't have any TID numbers the inferior will
5421 understand. Make sure to only send forms that do not specify
5423 append_resumption (p
, endp
, minus_one_ptid
, step
, siggnal
);
5425 else if (ptid_equal (ptid
, minus_one_ptid
) || ptid_is_pid (ptid
))
5427 /* Resume all threads (of all processes, or of a single
5428 process), with preference for INFERIOR_PTID. This assumes
5429 inferior_ptid belongs to the set of all threads we are about
5431 if (step
|| siggnal
!= GDB_SIGNAL_0
)
5433 /* Step inferior_ptid, with or without signal. */
5434 p
= append_resumption (p
, endp
, inferior_ptid
, step
, siggnal
);
5437 /* Also pass down any pending signaled resumption for other
5438 threads not the current. */
5439 p
= append_pending_thread_resumptions (p
, endp
, ptid
);
5441 /* And continue others without a signal. */
5442 append_resumption (p
, endp
, ptid
, /*step=*/ 0, GDB_SIGNAL_0
);
5446 /* Scheduler locking; resume only PTID. */
5447 append_resumption (p
, endp
, ptid
, step
, siggnal
);
5450 gdb_assert (strlen (rs
->buf
) < get_remote_packet_size ());
5453 if (target_is_non_stop_p ())
5455 /* In non-stop, the stub replies to vCont with "OK". The stop
5456 reply will be reported asynchronously by means of a `%Stop'
5458 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5459 if (strcmp (rs
->buf
, "OK") != 0)
5460 error (_("Unexpected vCont reply in non-stop mode: %s"), rs
->buf
);
5466 /* Tell the remote machine to resume. */
5469 remote_resume (struct target_ops
*ops
,
5470 ptid_t ptid
, int step
, enum gdb_signal siggnal
)
5472 struct remote_state
*rs
= get_remote_state ();
5474 struct thread_info
*thread
;
5476 /* In all-stop, we can't mark REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN
5477 (explained in remote-notif.c:handle_notification) so
5478 remote_notif_process is not called. We need find a place where
5479 it is safe to start a 'vNotif' sequence. It is good to do it
5480 before resuming inferior, because inferior was stopped and no RSP
5481 traffic at that moment. */
5482 if (!target_is_non_stop_p ())
5483 remote_notif_process (rs
->notif_state
, ¬if_client_stop
);
5485 rs
->last_sent_signal
= siggnal
;
5486 rs
->last_sent_step
= step
;
5488 /* The vCont packet doesn't need to specify threads via Hc. */
5489 /* No reverse support (yet) for vCont. */
5490 if (execution_direction
!= EXEC_REVERSE
)
5491 if (remote_vcont_resume (ptid
, step
, siggnal
))
5494 /* All other supported resume packets do use Hc, so set the continue
5496 if (ptid_equal (ptid
, minus_one_ptid
))
5497 set_continue_thread (any_thread_ptid
);
5499 set_continue_thread (ptid
);
5501 ALL_NON_EXITED_THREADS (thread
)
5502 resume_clear_thread_private_info (thread
);
5505 if (execution_direction
== EXEC_REVERSE
)
5507 /* We don't pass signals to the target in reverse exec mode. */
5508 if (info_verbose
&& siggnal
!= GDB_SIGNAL_0
)
5509 warning (_(" - Can't pass signal %d to target in reverse: ignored."),
5512 if (step
&& packet_support (PACKET_bs
) == PACKET_DISABLE
)
5513 error (_("Remote reverse-step not supported."));
5514 if (!step
&& packet_support (PACKET_bc
) == PACKET_DISABLE
)
5515 error (_("Remote reverse-continue not supported."));
5517 strcpy (buf
, step
? "bs" : "bc");
5519 else if (siggnal
!= GDB_SIGNAL_0
)
5521 buf
[0] = step
? 'S' : 'C';
5522 buf
[1] = tohex (((int) siggnal
>> 4) & 0xf);
5523 buf
[2] = tohex (((int) siggnal
) & 0xf);
5527 strcpy (buf
, step
? "s" : "c");
5532 /* We are about to start executing the inferior, let's register it
5533 with the event loop. NOTE: this is the one place where all the
5534 execution commands end up. We could alternatively do this in each
5535 of the execution commands in infcmd.c. */
5536 /* FIXME: ezannoni 1999-09-28: We may need to move this out of here
5537 into infcmd.c in order to allow inferior function calls to work
5538 NOT asynchronously. */
5539 if (target_can_async_p ())
5542 /* We've just told the target to resume. The remote server will
5543 wait for the inferior to stop, and then send a stop reply. In
5544 the mean time, we can't start another command/query ourselves
5545 because the stub wouldn't be ready to process it. This applies
5546 only to the base all-stop protocol, however. In non-stop (which
5547 only supports vCont), the stub replies with an "OK", and is
5548 immediate able to process further serial input. */
5549 if (!target_is_non_stop_p ())
5550 rs
->waiting_for_stop_reply
= 1;
5554 /* Set up the signal handler for SIGINT, while the target is
5555 executing, ovewriting the 'regular' SIGINT signal handler. */
5557 async_initialize_sigint_signal_handler (void)
5559 signal (SIGINT
, async_handle_remote_sigint
);
5562 /* Signal handler for SIGINT, while the target is executing. */
5564 async_handle_remote_sigint (int sig
)
5566 signal (sig
, async_handle_remote_sigint_twice
);
5567 /* Note we need to go through gdb_call_async_signal_handler in order
5568 to wake up the event loop on Windows. */
5569 gdb_call_async_signal_handler (async_sigint_remote_token
, 0);
5572 /* Signal handler for SIGINT, installed after SIGINT has already been
5573 sent once. It will take effect the second time that the user sends
5576 async_handle_remote_sigint_twice (int sig
)
5578 signal (sig
, async_handle_remote_sigint
);
5579 /* See note in async_handle_remote_sigint. */
5580 gdb_call_async_signal_handler (async_sigint_remote_twice_token
, 0);
5583 /* Implementation of to_check_pending_interrupt. */
5586 remote_check_pending_interrupt (struct target_ops
*self
)
5588 struct async_signal_handler
*token
= async_sigint_remote_twice_token
;
5590 if (async_signal_handler_is_marked (token
))
5592 clear_async_signal_handler (token
);
5593 call_async_signal_handler (token
);
5597 /* Perform the real interruption of the target execution, in response
5600 async_remote_interrupt (gdb_client_data arg
)
5603 fprintf_unfiltered (gdb_stdlog
, "async_remote_interrupt called\n");
5605 target_interrupt (inferior_ptid
);
5608 /* Perform interrupt, if the first attempt did not succeed. Just give
5609 up on the target alltogether. */
5611 async_remote_interrupt_twice (gdb_client_data arg
)
5614 fprintf_unfiltered (gdb_stdlog
, "async_remote_interrupt_twice called\n");
5619 /* Reinstall the usual SIGINT handlers, after the target has
5622 async_cleanup_sigint_signal_handler (void *dummy
)
5624 signal (SIGINT
, handle_sigint
);
5627 /* Send ^C to target to halt it. Target will respond, and send us a
5629 static void (*ofunc
) (int);
5631 /* The command line interface's interrupt routine. This function is installed
5632 as a signal handler for SIGINT. The first time a user requests an
5633 interrupt, we call remote_interrupt to send a break or ^C. If there is no
5634 response from the target (it didn't stop when the user requested it),
5635 we ask the user if he'd like to detach from the target. */
5638 sync_remote_interrupt (int signo
)
5640 /* If this doesn't work, try more severe steps. */
5641 signal (signo
, sync_remote_interrupt_twice
);
5643 gdb_call_async_signal_handler (async_sigint_remote_token
, 1);
5646 /* The user typed ^C twice. */
5649 sync_remote_interrupt_twice (int signo
)
5651 signal (signo
, ofunc
);
5652 gdb_call_async_signal_handler (async_sigint_remote_twice_token
, 1);
5653 signal (signo
, sync_remote_interrupt
);
5656 /* Non-stop version of target_stop. Uses `vCont;t' to stop a remote
5657 thread, all threads of a remote process, or all threads of all
5661 remote_stop_ns (ptid_t ptid
)
5663 struct remote_state
*rs
= get_remote_state ();
5665 char *endp
= rs
->buf
+ get_remote_packet_size ();
5667 if (packet_support (PACKET_vCont
) == PACKET_SUPPORT_UNKNOWN
)
5668 remote_vcont_probe (rs
);
5670 if (!rs
->supports_vCont
.t
)
5671 error (_("Remote server does not support stopping threads"));
5673 if (ptid_equal (ptid
, minus_one_ptid
)
5674 || (!remote_multi_process_p (rs
) && ptid_is_pid (ptid
)))
5675 p
+= xsnprintf (p
, endp
- p
, "vCont;t");
5680 p
+= xsnprintf (p
, endp
- p
, "vCont;t:");
5682 if (ptid_is_pid (ptid
))
5683 /* All (-1) threads of process. */
5684 nptid
= ptid_build (ptid_get_pid (ptid
), -1, 0);
5687 /* Small optimization: if we already have a stop reply for
5688 this thread, no use in telling the stub we want this
5690 if (peek_stop_reply (ptid
))
5696 write_ptid (p
, endp
, nptid
);
5699 /* In non-stop, we get an immediate OK reply. The stop reply will
5700 come in asynchronously by notification. */
5702 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5703 if (strcmp (rs
->buf
, "OK") != 0)
5704 error (_("Stopping %s failed: %s"), target_pid_to_str (ptid
), rs
->buf
);
5707 /* All-stop version of target_interrupt. Sends a break or a ^C to
5708 interrupt the remote target. It is undefined which thread of which
5709 process reports the interrupt. */
5712 remote_interrupt_as (void)
5714 struct remote_state
*rs
= get_remote_state ();
5716 rs
->ctrlc_pending_p
= 1;
5718 /* If the inferior is stopped already, but the core didn't know
5719 about it yet, just ignore the request. The cached wait status
5720 will be collected in remote_wait. */
5721 if (rs
->cached_wait_status
)
5724 /* Send interrupt_sequence to remote target. */
5725 send_interrupt_sequence ();
5728 /* Non-stop version of target_interrupt. Uses `vCtrlC' to interrupt
5729 the remote target. It is undefined which thread of which process
5730 reports the interrupt. Returns true if the packet is supported by
5731 the server, false otherwise. */
5734 remote_interrupt_ns (void)
5736 struct remote_state
*rs
= get_remote_state ();
5738 char *endp
= rs
->buf
+ get_remote_packet_size ();
5740 xsnprintf (p
, endp
- p
, "vCtrlC");
5742 /* In non-stop, we get an immediate OK reply. The stop reply will
5743 come in asynchronously by notification. */
5745 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5747 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_vCtrlC
]))
5751 case PACKET_UNKNOWN
:
5754 error (_("Interrupting target failed: %s"), rs
->buf
);
5760 /* Implement the to_stop function for the remote targets. */
5763 remote_stop (struct target_ops
*self
, ptid_t ptid
)
5766 fprintf_unfiltered (gdb_stdlog
, "remote_stop called\n");
5768 if (target_is_non_stop_p ())
5769 remote_stop_ns (ptid
);
5772 /* We don't currently have a way to transparently pause the
5773 remote target in all-stop mode. Interrupt it instead. */
5774 remote_interrupt_as ();
5778 /* Implement the to_interrupt function for the remote targets. */
5781 remote_interrupt (struct target_ops
*self
, ptid_t ptid
)
5784 fprintf_unfiltered (gdb_stdlog
, "remote_interrupt called\n");
5788 /* In non-stop mode, we always stop with no signal instead. */
5789 remote_stop_ns (ptid
);
5793 /* In all-stop, we emulate ^C-ing the remote target's
5795 if (target_is_non_stop_p ())
5797 if (!remote_interrupt_ns ())
5799 /* No support for ^C-ing the remote target. Stop it
5800 (with no signal) instead. */
5801 remote_stop_ns (ptid
);
5805 remote_interrupt_as ();
5809 /* Ask the user what to do when an interrupt is received. */
5812 interrupt_query (void)
5814 struct remote_state
*rs
= get_remote_state ();
5815 struct cleanup
*old_chain
;
5817 old_chain
= make_cleanup_restore_target_terminal ();
5818 target_terminal_ours ();
5820 if (rs
->waiting_for_stop_reply
&& rs
->ctrlc_pending_p
)
5822 if (query (_("The target is not responding to interrupt requests.\n"
5823 "Stop debugging it? ")))
5825 remote_unpush_target ();
5826 throw_error (TARGET_CLOSE_ERROR
, _("Disconnected from target."));
5831 if (query (_("Interrupted while waiting for the program.\n"
5832 "Give up waiting? ")))
5836 do_cleanups (old_chain
);
5839 /* Enable/disable target terminal ownership. Most targets can use
5840 terminal groups to control terminal ownership. Remote targets are
5841 different in that explicit transfer of ownership to/from GDB/target
5845 remote_terminal_inferior (struct target_ops
*self
)
5847 if (!target_async_permitted
)
5848 /* Nothing to do. */
5851 /* FIXME: cagney/1999-09-27: Make calls to target_terminal_*()
5852 idempotent. The event-loop GDB talking to an asynchronous target
5853 with a synchronous command calls this function from both
5854 event-top.c and infrun.c/infcmd.c. Once GDB stops trying to
5855 transfer the terminal to the target when it shouldn't this guard
5857 if (!remote_async_terminal_ours_p
)
5859 delete_file_handler (input_fd
);
5860 remote_async_terminal_ours_p
= 0;
5861 async_initialize_sigint_signal_handler ();
5862 /* NOTE: At this point we could also register our selves as the
5863 recipient of all input. Any characters typed could then be
5864 passed on down to the target. */
5868 remote_terminal_ours (struct target_ops
*self
)
5870 if (!target_async_permitted
)
5871 /* Nothing to do. */
5874 /* See FIXME in remote_terminal_inferior. */
5875 if (remote_async_terminal_ours_p
)
5877 async_cleanup_sigint_signal_handler (NULL
);
5878 add_file_handler (input_fd
, stdin_event_handler
, 0);
5879 remote_async_terminal_ours_p
= 1;
5883 remote_console_output (char *msg
)
5887 for (p
= msg
; p
[0] && p
[1]; p
+= 2)
5890 char c
= fromhex (p
[0]) * 16 + fromhex (p
[1]);
5894 fputs_unfiltered (tb
, gdb_stdtarg
);
5896 gdb_flush (gdb_stdtarg
);
5899 typedef struct cached_reg
5902 gdb_byte data
[MAX_REGISTER_SIZE
];
5905 DEF_VEC_O(cached_reg_t
);
5907 typedef struct stop_reply
5909 struct notif_event base
;
5911 /* The identifier of the thread about this event */
5914 /* The remote state this event is associated with. When the remote
5915 connection, represented by a remote_state object, is closed,
5916 all the associated stop_reply events should be released. */
5917 struct remote_state
*rs
;
5919 struct target_waitstatus ws
;
5921 /* Expedited registers. This makes remote debugging a bit more
5922 efficient for those targets that provide critical registers as
5923 part of their normal status mechanism (as another roundtrip to
5924 fetch them is avoided). */
5925 VEC(cached_reg_t
) *regcache
;
5927 enum target_stop_reason stop_reason
;
5929 CORE_ADDR watch_data_address
;
5934 DECLARE_QUEUE_P (stop_reply_p
);
5935 DEFINE_QUEUE_P (stop_reply_p
);
5936 /* The list of already fetched and acknowledged stop events. This
5937 queue is used for notification Stop, and other notifications
5938 don't need queue for their events, because the notification events
5939 of Stop can't be consumed immediately, so that events should be
5940 queued first, and be consumed by remote_wait_{ns,as} one per
5941 time. Other notifications can consume their events immediately,
5942 so queue is not needed for them. */
5943 static QUEUE (stop_reply_p
) *stop_reply_queue
;
5946 stop_reply_xfree (struct stop_reply
*r
)
5948 notif_event_xfree ((struct notif_event
*) r
);
5951 /* Return the length of the stop reply queue. */
5954 stop_reply_queue_length (void)
5956 return QUEUE_length (stop_reply_p
, stop_reply_queue
);
5960 remote_notif_stop_parse (struct notif_client
*self
, char *buf
,
5961 struct notif_event
*event
)
5963 remote_parse_stop_reply (buf
, (struct stop_reply
*) event
);
5967 remote_notif_stop_ack (struct notif_client
*self
, char *buf
,
5968 struct notif_event
*event
)
5970 struct stop_reply
*stop_reply
= (struct stop_reply
*) event
;
5973 putpkt ((char *) self
->ack_command
);
5975 if (stop_reply
->ws
.kind
== TARGET_WAITKIND_IGNORE
)
5976 /* We got an unknown stop reply. */
5977 error (_("Unknown stop reply"));
5979 push_stop_reply (stop_reply
);
5983 remote_notif_stop_can_get_pending_events (struct notif_client
*self
)
5985 /* We can't get pending events in remote_notif_process for
5986 notification stop, and we have to do this in remote_wait_ns
5987 instead. If we fetch all queued events from stub, remote stub
5988 may exit and we have no chance to process them back in
5990 mark_async_event_handler (remote_async_inferior_event_token
);
5995 stop_reply_dtr (struct notif_event
*event
)
5997 struct stop_reply
*r
= (struct stop_reply
*) event
;
5999 VEC_free (cached_reg_t
, r
->regcache
);
6002 static struct notif_event
*
6003 remote_notif_stop_alloc_reply (void)
6005 /* We cast to a pointer to the "base class". */
6006 struct notif_event
*r
= (struct notif_event
*) XNEW (struct stop_reply
);
6008 r
->dtr
= stop_reply_dtr
;
6013 /* A client of notification Stop. */
6015 struct notif_client notif_client_stop
=
6019 remote_notif_stop_parse
,
6020 remote_notif_stop_ack
,
6021 remote_notif_stop_can_get_pending_events
,
6022 remote_notif_stop_alloc_reply
,
6026 /* A parameter to pass data in and out. */
6028 struct queue_iter_param
6031 struct stop_reply
*output
;
6034 /* Determine if THREAD is a pending fork parent thread. ARG contains
6035 the pid of the process that owns the threads we want to check, or
6036 -1 if we want to check all threads. */
6039 is_pending_fork_parent (struct target_waitstatus
*ws
, int event_pid
,
6042 if (ws
->kind
== TARGET_WAITKIND_FORKED
6043 || ws
->kind
== TARGET_WAITKIND_VFORKED
)
6045 if (event_pid
== -1 || event_pid
== ptid_get_pid (thread_ptid
))
6052 /* Check whether EVENT is a fork event, and if it is, remove the
6053 fork child from the context list passed in DATA. */
6056 remove_child_of_pending_fork (QUEUE (stop_reply_p
) *q
,
6057 QUEUE_ITER (stop_reply_p
) *iter
,
6061 struct queue_iter_param
*param
= (struct queue_iter_param
*) data
;
6062 struct threads_listing_context
*context
6063 = (struct threads_listing_context
*) param
->input
;
6065 if (event
->ws
.kind
== TARGET_WAITKIND_FORKED
6066 || event
->ws
.kind
== TARGET_WAITKIND_VFORKED
6067 || event
->ws
.kind
== TARGET_WAITKIND_THREAD_EXITED
)
6068 threads_listing_context_remove (&event
->ws
, context
);
6073 /* If CONTEXT contains any fork child threads that have not been
6074 reported yet, remove them from the CONTEXT list. If such a
6075 thread exists it is because we are stopped at a fork catchpoint
6076 and have not yet called follow_fork, which will set up the
6077 host-side data structures for the new process. */
6080 remove_new_fork_children (struct threads_listing_context
*context
)
6082 struct thread_info
* thread
;
6084 struct notif_client
*notif
= ¬if_client_stop
;
6085 struct queue_iter_param param
;
6087 /* For any threads stopped at a fork event, remove the corresponding
6088 fork child threads from the CONTEXT list. */
6089 ALL_NON_EXITED_THREADS (thread
)
6091 struct target_waitstatus
*ws
= &thread
->pending_follow
;
6093 if (is_pending_fork_parent (ws
, pid
, thread
->ptid
))
6095 threads_listing_context_remove (ws
, context
);
6099 /* Check for any pending fork events (not reported or processed yet)
6100 in process PID and remove those fork child threads from the
6101 CONTEXT list as well. */
6102 remote_notif_get_pending_events (notif
);
6103 param
.input
= context
;
6104 param
.output
= NULL
;
6105 QUEUE_iterate (stop_reply_p
, stop_reply_queue
,
6106 remove_child_of_pending_fork
, ¶m
);
6109 /* Remove stop replies in the queue if its pid is equal to the given
6113 remove_stop_reply_for_inferior (QUEUE (stop_reply_p
) *q
,
6114 QUEUE_ITER (stop_reply_p
) *iter
,
6118 struct queue_iter_param
*param
= (struct queue_iter_param
*) data
;
6119 struct inferior
*inf
= (struct inferior
*) param
->input
;
6121 if (ptid_get_pid (event
->ptid
) == inf
->pid
)
6123 stop_reply_xfree (event
);
6124 QUEUE_remove_elem (stop_reply_p
, q
, iter
);
6130 /* Discard all pending stop replies of inferior INF. */
6133 discard_pending_stop_replies (struct inferior
*inf
)
6136 struct queue_iter_param param
;
6137 struct stop_reply
*reply
;
6138 struct remote_state
*rs
= get_remote_state ();
6139 struct remote_notif_state
*rns
= rs
->notif_state
;
6141 /* This function can be notified when an inferior exists. When the
6142 target is not remote, the notification state is NULL. */
6143 if (rs
->remote_desc
== NULL
)
6146 reply
= (struct stop_reply
*) rns
->pending_event
[notif_client_stop
.id
];
6148 /* Discard the in-flight notification. */
6149 if (reply
!= NULL
&& ptid_get_pid (reply
->ptid
) == inf
->pid
)
6151 stop_reply_xfree (reply
);
6152 rns
->pending_event
[notif_client_stop
.id
] = NULL
;
6156 param
.output
= NULL
;
6157 /* Discard the stop replies we have already pulled with
6159 QUEUE_iterate (stop_reply_p
, stop_reply_queue
,
6160 remove_stop_reply_for_inferior
, ¶m
);
6163 /* If its remote state is equal to the given remote state,
6164 remove EVENT from the stop reply queue. */
6167 remove_stop_reply_of_remote_state (QUEUE (stop_reply_p
) *q
,
6168 QUEUE_ITER (stop_reply_p
) *iter
,
6172 struct queue_iter_param
*param
= (struct queue_iter_param
*) data
;
6173 struct remote_state
*rs
= (struct remote_state
*) param
->input
;
6175 if (event
->rs
== rs
)
6177 stop_reply_xfree (event
);
6178 QUEUE_remove_elem (stop_reply_p
, q
, iter
);
6184 /* Discard the stop replies for RS in stop_reply_queue. */
6187 discard_pending_stop_replies_in_queue (struct remote_state
*rs
)
6189 struct queue_iter_param param
;
6192 param
.output
= NULL
;
6193 /* Discard the stop replies we have already pulled with
6195 QUEUE_iterate (stop_reply_p
, stop_reply_queue
,
6196 remove_stop_reply_of_remote_state
, ¶m
);
6199 /* A parameter to pass data in and out. */
6202 remote_notif_remove_once_on_match (QUEUE (stop_reply_p
) *q
,
6203 QUEUE_ITER (stop_reply_p
) *iter
,
6207 struct queue_iter_param
*param
= (struct queue_iter_param
*) data
;
6208 ptid_t
*ptid
= (ptid_t
*) param
->input
;
6210 if (ptid_match (event
->ptid
, *ptid
))
6212 param
->output
= event
;
6213 QUEUE_remove_elem (stop_reply_p
, q
, iter
);
6220 /* Remove the first reply in 'stop_reply_queue' which matches
6223 static struct stop_reply
*
6224 remote_notif_remove_queued_reply (ptid_t ptid
)
6226 struct queue_iter_param param
;
6228 param
.input
= &ptid
;
6229 param
.output
= NULL
;
6231 QUEUE_iterate (stop_reply_p
, stop_reply_queue
,
6232 remote_notif_remove_once_on_match
, ¶m
);
6234 fprintf_unfiltered (gdb_stdlog
,
6235 "notif: discard queued event: 'Stop' in %s\n",
6236 target_pid_to_str (ptid
));
6238 return param
.output
;
6241 /* Look for a queued stop reply belonging to PTID. If one is found,
6242 remove it from the queue, and return it. Returns NULL if none is
6243 found. If there are still queued events left to process, tell the
6244 event loop to get back to target_wait soon. */
6246 static struct stop_reply
*
6247 queued_stop_reply (ptid_t ptid
)
6249 struct stop_reply
*r
= remote_notif_remove_queued_reply (ptid
);
6251 if (!QUEUE_is_empty (stop_reply_p
, stop_reply_queue
))
6252 /* There's still at least an event left. */
6253 mark_async_event_handler (remote_async_inferior_event_token
);
6258 /* Push a fully parsed stop reply in the stop reply queue. Since we
6259 know that we now have at least one queued event left to pass to the
6260 core side, tell the event loop to get back to target_wait soon. */
6263 push_stop_reply (struct stop_reply
*new_event
)
6265 QUEUE_enque (stop_reply_p
, stop_reply_queue
, new_event
);
6268 fprintf_unfiltered (gdb_stdlog
,
6269 "notif: push 'Stop' %s to queue %d\n",
6270 target_pid_to_str (new_event
->ptid
),
6271 QUEUE_length (stop_reply_p
,
6274 mark_async_event_handler (remote_async_inferior_event_token
);
6278 stop_reply_match_ptid_and_ws (QUEUE (stop_reply_p
) *q
,
6279 QUEUE_ITER (stop_reply_p
) *iter
,
6280 struct stop_reply
*event
,
6283 ptid_t
*ptid
= (ptid_t
*) data
;
6285 return !(ptid_equal (*ptid
, event
->ptid
)
6286 && event
->ws
.kind
== TARGET_WAITKIND_STOPPED
);
6289 /* Returns true if we have a stop reply for PTID. */
6292 peek_stop_reply (ptid_t ptid
)
6294 return !QUEUE_iterate (stop_reply_p
, stop_reply_queue
,
6295 stop_reply_match_ptid_and_ws
, &ptid
);
6298 /* Skip PACKET until the next semi-colon (or end of string). */
6301 skip_to_semicolon (char *p
)
6303 while (*p
!= '\0' && *p
!= ';')
6308 /* Helper for remote_parse_stop_reply. Return nonzero if the substring
6309 starting with P and ending with PEND matches PREFIX. */
6312 strprefix (const char *p
, const char *pend
, const char *prefix
)
6314 for ( ; p
< pend
; p
++, prefix
++)
6317 return *prefix
== '\0';
6320 /* Parse the stop reply in BUF. Either the function succeeds, and the
6321 result is stored in EVENT, or throws an error. */
6324 remote_parse_stop_reply (char *buf
, struct stop_reply
*event
)
6326 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6331 event
->ptid
= null_ptid
;
6332 event
->rs
= get_remote_state ();
6333 event
->ws
.kind
= TARGET_WAITKIND_IGNORE
;
6334 event
->ws
.value
.integer
= 0;
6335 event
->stop_reason
= TARGET_STOPPED_BY_NO_REASON
;
6336 event
->regcache
= NULL
;
6341 case 'T': /* Status with PC, SP, FP, ... */
6342 /* Expedited reply, containing Signal, {regno, reg} repeat. */
6343 /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where
6345 n... = register number
6346 r... = register contents
6349 p
= &buf
[3]; /* after Txx */
6355 p1
= strchr (p
, ':');
6357 error (_("Malformed packet(a) (missing colon): %s\n\
6361 error (_("Malformed packet(a) (missing register number): %s\n\
6365 /* Some "registers" are actually extended stop information.
6366 Note if you're adding a new entry here: GDB 7.9 and
6367 earlier assume that all register "numbers" that start
6368 with an hex digit are real register numbers. Make sure
6369 the server only sends such a packet if it knows the
6370 client understands it. */
6372 if (strprefix (p
, p1
, "thread"))
6373 event
->ptid
= read_ptid (++p1
, &p
);
6374 else if (strprefix (p
, p1
, "watch")
6375 || strprefix (p
, p1
, "rwatch")
6376 || strprefix (p
, p1
, "awatch"))
6378 event
->stop_reason
= TARGET_STOPPED_BY_WATCHPOINT
;
6379 p
= unpack_varlen_hex (++p1
, &addr
);
6380 event
->watch_data_address
= (CORE_ADDR
) addr
;
6382 else if (strprefix (p
, p1
, "swbreak"))
6384 event
->stop_reason
= TARGET_STOPPED_BY_SW_BREAKPOINT
;
6386 /* Make sure the stub doesn't forget to indicate support
6388 if (packet_support (PACKET_swbreak_feature
) != PACKET_ENABLE
)
6389 error (_("Unexpected swbreak stop reason"));
6391 /* The value part is documented as "must be empty",
6392 though we ignore it, in case we ever decide to make
6393 use of it in a backward compatible way. */
6394 p
= skip_to_semicolon (p1
+ 1);
6396 else if (strprefix (p
, p1
, "hwbreak"))
6398 event
->stop_reason
= TARGET_STOPPED_BY_HW_BREAKPOINT
;
6400 /* Make sure the stub doesn't forget to indicate support
6402 if (packet_support (PACKET_hwbreak_feature
) != PACKET_ENABLE
)
6403 error (_("Unexpected hwbreak stop reason"));
6406 p
= skip_to_semicolon (p1
+ 1);
6408 else if (strprefix (p
, p1
, "library"))
6410 event
->ws
.kind
= TARGET_WAITKIND_LOADED
;
6411 p
= skip_to_semicolon (p1
+ 1);
6413 else if (strprefix (p
, p1
, "replaylog"))
6415 event
->ws
.kind
= TARGET_WAITKIND_NO_HISTORY
;
6416 /* p1 will indicate "begin" or "end", but it makes
6417 no difference for now, so ignore it. */
6418 p
= skip_to_semicolon (p1
+ 1);
6420 else if (strprefix (p
, p1
, "core"))
6424 p
= unpack_varlen_hex (++p1
, &c
);
6427 else if (strprefix (p
, p1
, "fork"))
6429 event
->ws
.value
.related_pid
= read_ptid (++p1
, &p
);
6430 event
->ws
.kind
= TARGET_WAITKIND_FORKED
;
6432 else if (strprefix (p
, p1
, "vfork"))
6434 event
->ws
.value
.related_pid
= read_ptid (++p1
, &p
);
6435 event
->ws
.kind
= TARGET_WAITKIND_VFORKED
;
6437 else if (strprefix (p
, p1
, "vforkdone"))
6439 event
->ws
.kind
= TARGET_WAITKIND_VFORK_DONE
;
6440 p
= skip_to_semicolon (p1
+ 1);
6442 else if (strprefix (p
, p1
, "exec"))
6445 char pathname
[PATH_MAX
];
6448 /* Determine the length of the execd pathname. */
6449 p
= unpack_varlen_hex (++p1
, &ignored
);
6450 pathlen
= (p
- p1
) / 2;
6452 /* Save the pathname for event reporting and for
6453 the next run command. */
6454 hex2bin (p1
, (gdb_byte
*) pathname
, pathlen
);
6455 pathname
[pathlen
] = '\0';
6457 /* This is freed during event handling. */
6458 event
->ws
.value
.execd_pathname
= xstrdup (pathname
);
6459 event
->ws
.kind
= TARGET_WAITKIND_EXECD
;
6461 /* Skip the registers included in this packet, since
6462 they may be for an architecture different from the
6463 one used by the original program. */
6466 else if (strprefix (p
, p1
, "create"))
6468 event
->ws
.kind
= TARGET_WAITKIND_THREAD_CREATED
;
6469 p
= skip_to_semicolon (p1
+ 1);
6478 p
= skip_to_semicolon (p1
+ 1);
6483 /* Maybe a real ``P'' register number. */
6484 p_temp
= unpack_varlen_hex (p
, &pnum
);
6485 /* If the first invalid character is the colon, we got a
6486 register number. Otherwise, it's an unknown stop
6490 struct packet_reg
*reg
= packet_reg_from_pnum (rsa
, pnum
);
6491 cached_reg_t cached_reg
;
6494 error (_("Remote sent bad register number %s: %s\n\
6496 hex_string (pnum
), p
, buf
);
6498 cached_reg
.num
= reg
->regnum
;
6501 fieldsize
= hex2bin (p
, cached_reg
.data
,
6502 register_size (target_gdbarch (),
6505 if (fieldsize
< register_size (target_gdbarch (),
6507 warning (_("Remote reply is too short: %s"), buf
);
6509 VEC_safe_push (cached_reg_t
, event
->regcache
, &cached_reg
);
6513 /* Not a number. Silently skip unknown optional
6515 p
= skip_to_semicolon (p1
+ 1);
6520 error (_("Remote register badly formatted: %s\nhere: %s"),
6525 if (event
->ws
.kind
!= TARGET_WAITKIND_IGNORE
)
6529 case 'S': /* Old style status, just signal only. */
6533 event
->ws
.kind
= TARGET_WAITKIND_STOPPED
;
6534 sig
= (fromhex (buf
[1]) << 4) + fromhex (buf
[2]);
6535 if (GDB_SIGNAL_FIRST
<= sig
&& sig
< GDB_SIGNAL_LAST
)
6536 event
->ws
.value
.sig
= (enum gdb_signal
) sig
;
6538 event
->ws
.value
.sig
= GDB_SIGNAL_UNKNOWN
;
6541 case 'w': /* Thread exited. */
6546 event
->ws
.kind
= TARGET_WAITKIND_THREAD_EXITED
;
6547 p
= unpack_varlen_hex (&buf
[1], &value
);
6548 event
->ws
.value
.integer
= value
;
6550 error (_("stop reply packet badly formatted: %s"), buf
);
6551 event
->ptid
= read_ptid (++p
, NULL
);
6554 case 'W': /* Target exited. */
6561 /* GDB used to accept only 2 hex chars here. Stubs should
6562 only send more if they detect GDB supports multi-process
6564 p
= unpack_varlen_hex (&buf
[1], &value
);
6568 /* The remote process exited. */
6569 event
->ws
.kind
= TARGET_WAITKIND_EXITED
;
6570 event
->ws
.value
.integer
= value
;
6574 /* The remote process exited with a signal. */
6575 event
->ws
.kind
= TARGET_WAITKIND_SIGNALLED
;
6576 if (GDB_SIGNAL_FIRST
<= value
&& value
< GDB_SIGNAL_LAST
)
6577 event
->ws
.value
.sig
= (enum gdb_signal
) value
;
6579 event
->ws
.value
.sig
= GDB_SIGNAL_UNKNOWN
;
6582 /* If no process is specified, assume inferior_ptid. */
6583 pid
= ptid_get_pid (inferior_ptid
);
6592 else if (startswith (p
, "process:"))
6596 p
+= sizeof ("process:") - 1;
6597 unpack_varlen_hex (p
, &upid
);
6601 error (_("unknown stop reply packet: %s"), buf
);
6604 error (_("unknown stop reply packet: %s"), buf
);
6605 event
->ptid
= pid_to_ptid (pid
);
6609 event
->ws
.kind
= TARGET_WAITKIND_NO_RESUMED
;
6610 event
->ptid
= minus_one_ptid
;
6614 if (target_is_non_stop_p () && ptid_equal (event
->ptid
, null_ptid
))
6615 error (_("No process or thread specified in stop reply: %s"), buf
);
6618 /* When the stub wants to tell GDB about a new notification reply, it
6619 sends a notification (%Stop, for example). Those can come it at
6620 any time, hence, we have to make sure that any pending
6621 putpkt/getpkt sequence we're making is finished, before querying
6622 the stub for more events with the corresponding ack command
6623 (vStopped, for example). E.g., if we started a vStopped sequence
6624 immediately upon receiving the notification, something like this
6632 1.6) <-- (registers reply to step #1.3)
6634 Obviously, the reply in step #1.6 would be unexpected to a vStopped
6637 To solve this, whenever we parse a %Stop notification successfully,
6638 we mark the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN, and carry on
6639 doing whatever we were doing:
6645 <GDB marks the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN>
6646 2.5) <-- (registers reply to step #2.3)
6648 Eventualy after step #2.5, we return to the event loop, which
6649 notices there's an event on the
6650 REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN event and calls the
6651 associated callback --- the function below. At this point, we're
6652 always safe to start a vStopped sequence. :
6655 2.7) <-- T05 thread:2
6661 remote_notif_get_pending_events (struct notif_client
*nc
)
6663 struct remote_state
*rs
= get_remote_state ();
6665 if (rs
->notif_state
->pending_event
[nc
->id
] != NULL
)
6668 fprintf_unfiltered (gdb_stdlog
,
6669 "notif: process: '%s' ack pending event\n",
6673 nc
->ack (nc
, rs
->buf
, rs
->notif_state
->pending_event
[nc
->id
]);
6674 rs
->notif_state
->pending_event
[nc
->id
] = NULL
;
6678 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6679 if (strcmp (rs
->buf
, "OK") == 0)
6682 remote_notif_ack (nc
, rs
->buf
);
6688 fprintf_unfiltered (gdb_stdlog
,
6689 "notif: process: '%s' no pending reply\n",
6694 /* Called when it is decided that STOP_REPLY holds the info of the
6695 event that is to be returned to the core. This function always
6696 destroys STOP_REPLY. */
6699 process_stop_reply (struct stop_reply
*stop_reply
,
6700 struct target_waitstatus
*status
)
6704 *status
= stop_reply
->ws
;
6705 ptid
= stop_reply
->ptid
;
6707 /* If no thread/process was reported by the stub, assume the current
6709 if (ptid_equal (ptid
, null_ptid
))
6710 ptid
= inferior_ptid
;
6712 if (status
->kind
!= TARGET_WAITKIND_EXITED
6713 && status
->kind
!= TARGET_WAITKIND_SIGNALLED
6714 && status
->kind
!= TARGET_WAITKIND_NO_RESUMED
)
6716 struct remote_state
*rs
= get_remote_state ();
6717 struct private_thread_info
*remote_thr
;
6719 /* Expedited registers. */
6720 if (stop_reply
->regcache
)
6722 struct regcache
*regcache
6723 = get_thread_arch_regcache (ptid
, target_gdbarch ());
6728 VEC_iterate(cached_reg_t
, stop_reply
->regcache
, ix
, reg
);
6730 regcache_raw_supply (regcache
, reg
->num
, reg
->data
);
6731 VEC_free (cached_reg_t
, stop_reply
->regcache
);
6734 remote_notice_new_inferior (ptid
, 0);
6735 remote_thr
= demand_private_info (ptid
);
6736 remote_thr
->core
= stop_reply
->core
;
6737 remote_thr
->stop_reason
= stop_reply
->stop_reason
;
6738 remote_thr
->watch_data_address
= stop_reply
->watch_data_address
;
6741 stop_reply_xfree (stop_reply
);
6745 /* The non-stop mode version of target_wait. */
6748 remote_wait_ns (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
6750 struct remote_state
*rs
= get_remote_state ();
6751 struct stop_reply
*stop_reply
;
6755 /* If in non-stop mode, get out of getpkt even if a
6756 notification is received. */
6758 ret
= getpkt_or_notif_sane (&rs
->buf
, &rs
->buf_size
,
6759 0 /* forever */, &is_notif
);
6762 if (ret
!= -1 && !is_notif
)
6765 case 'E': /* Error of some sort. */
6766 /* We're out of sync with the target now. Did it continue
6767 or not? We can't tell which thread it was in non-stop,
6768 so just ignore this. */
6769 warning (_("Remote failure reply: %s"), rs
->buf
);
6771 case 'O': /* Console output. */
6772 remote_console_output (rs
->buf
+ 1);
6775 warning (_("Invalid remote reply: %s"), rs
->buf
);
6779 /* Acknowledge a pending stop reply that may have arrived in the
6781 if (rs
->notif_state
->pending_event
[notif_client_stop
.id
] != NULL
)
6782 remote_notif_get_pending_events (¬if_client_stop
);
6784 /* If indeed we noticed a stop reply, we're done. */
6785 stop_reply
= queued_stop_reply (ptid
);
6786 if (stop_reply
!= NULL
)
6787 return process_stop_reply (stop_reply
, status
);
6789 /* Still no event. If we're just polling for an event, then
6790 return to the event loop. */
6791 if (options
& TARGET_WNOHANG
)
6793 status
->kind
= TARGET_WAITKIND_IGNORE
;
6794 return minus_one_ptid
;
6797 /* Otherwise do a blocking wait. */
6798 ret
= getpkt_or_notif_sane (&rs
->buf
, &rs
->buf_size
,
6799 1 /* forever */, &is_notif
);
6803 /* Wait until the remote machine stops, then return, storing status in
6804 STATUS just as `wait' would. */
6807 remote_wait_as (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
6809 struct remote_state
*rs
= get_remote_state ();
6810 ptid_t event_ptid
= null_ptid
;
6812 struct stop_reply
*stop_reply
;
6816 status
->kind
= TARGET_WAITKIND_IGNORE
;
6817 status
->value
.integer
= 0;
6819 stop_reply
= queued_stop_reply (ptid
);
6820 if (stop_reply
!= NULL
)
6821 return process_stop_reply (stop_reply
, status
);
6823 if (rs
->cached_wait_status
)
6824 /* Use the cached wait status, but only once. */
6825 rs
->cached_wait_status
= 0;
6830 int forever
= ((options
& TARGET_WNOHANG
) == 0
6831 && wait_forever_enabled_p
);
6833 if (!rs
->waiting_for_stop_reply
)
6835 status
->kind
= TARGET_WAITKIND_NO_RESUMED
;
6836 return minus_one_ptid
;
6839 if (!target_is_async_p ())
6841 ofunc
= signal (SIGINT
, sync_remote_interrupt
);
6842 /* If the user hit C-c before this packet, or between packets,
6843 pretend that it was hit right here. */
6844 if (check_quit_flag ())
6847 sync_remote_interrupt (SIGINT
);
6851 /* FIXME: cagney/1999-09-27: If we're in async mode we should
6852 _never_ wait for ever -> test on target_is_async_p().
6853 However, before we do that we need to ensure that the caller
6854 knows how to take the target into/out of async mode. */
6855 ret
= getpkt_or_notif_sane (&rs
->buf
, &rs
->buf_size
,
6856 forever
, &is_notif
);
6858 if (!target_is_async_p ())
6859 signal (SIGINT
, ofunc
);
6861 /* GDB gets a notification. Return to core as this event is
6863 if (ret
!= -1 && is_notif
)
6864 return minus_one_ptid
;
6866 if (ret
== -1 && (options
& TARGET_WNOHANG
) != 0)
6867 return minus_one_ptid
;
6872 /* Assume that the target has acknowledged Ctrl-C unless we receive
6873 an 'F' or 'O' packet. */
6874 if (buf
[0] != 'F' && buf
[0] != 'O')
6875 rs
->ctrlc_pending_p
= 0;
6879 case 'E': /* Error of some sort. */
6880 /* We're out of sync with the target now. Did it continue or
6881 not? Not is more likely, so report a stop. */
6882 rs
->waiting_for_stop_reply
= 0;
6884 warning (_("Remote failure reply: %s"), buf
);
6885 status
->kind
= TARGET_WAITKIND_STOPPED
;
6886 status
->value
.sig
= GDB_SIGNAL_0
;
6888 case 'F': /* File-I/O request. */
6889 remote_fileio_request (buf
, rs
->ctrlc_pending_p
);
6890 rs
->ctrlc_pending_p
= 0;
6892 case 'N': case 'T': case 'S': case 'X': case 'W':
6894 struct stop_reply
*stop_reply
;
6896 /* There is a stop reply to handle. */
6897 rs
->waiting_for_stop_reply
= 0;
6900 = (struct stop_reply
*) remote_notif_parse (¬if_client_stop
,
6903 event_ptid
= process_stop_reply (stop_reply
, status
);
6906 case 'O': /* Console output. */
6907 remote_console_output (buf
+ 1);
6910 if (rs
->last_sent_signal
!= GDB_SIGNAL_0
)
6912 /* Zero length reply means that we tried 'S' or 'C' and the
6913 remote system doesn't support it. */
6914 target_terminal_ours_for_output ();
6916 ("Can't send signals to this remote system. %s not sent.\n",
6917 gdb_signal_to_name (rs
->last_sent_signal
));
6918 rs
->last_sent_signal
= GDB_SIGNAL_0
;
6919 target_terminal_inferior ();
6921 strcpy ((char *) buf
, rs
->last_sent_step
? "s" : "c");
6922 putpkt ((char *) buf
);
6925 /* else fallthrough */
6927 warning (_("Invalid remote reply: %s"), buf
);
6931 if (status
->kind
== TARGET_WAITKIND_NO_RESUMED
)
6932 return minus_one_ptid
;
6933 else if (status
->kind
== TARGET_WAITKIND_IGNORE
)
6935 /* Nothing interesting happened. If we're doing a non-blocking
6936 poll, we're done. Otherwise, go back to waiting. */
6937 if (options
& TARGET_WNOHANG
)
6938 return minus_one_ptid
;
6942 else if (status
->kind
!= TARGET_WAITKIND_EXITED
6943 && status
->kind
!= TARGET_WAITKIND_SIGNALLED
)
6945 if (!ptid_equal (event_ptid
, null_ptid
))
6946 record_currthread (rs
, event_ptid
);
6948 event_ptid
= inferior_ptid
;
6951 /* A process exit. Invalidate our notion of current thread. */
6952 record_currthread (rs
, minus_one_ptid
);
6957 /* Wait until the remote machine stops, then return, storing status in
6958 STATUS just as `wait' would. */
6961 remote_wait (struct target_ops
*ops
,
6962 ptid_t ptid
, struct target_waitstatus
*status
, int options
)
6966 if (target_is_non_stop_p ())
6967 event_ptid
= remote_wait_ns (ptid
, status
, options
);
6969 event_ptid
= remote_wait_as (ptid
, status
, options
);
6971 if (target_is_async_p ())
6973 /* If there are are events left in the queue tell the event loop
6975 if (!QUEUE_is_empty (stop_reply_p
, stop_reply_queue
))
6976 mark_async_event_handler (remote_async_inferior_event_token
);
6982 /* Fetch a single register using a 'p' packet. */
6985 fetch_register_using_p (struct regcache
*regcache
, struct packet_reg
*reg
)
6987 struct remote_state
*rs
= get_remote_state ();
6989 char regp
[MAX_REGISTER_SIZE
];
6992 if (packet_support (PACKET_p
) == PACKET_DISABLE
)
6995 if (reg
->pnum
== -1)
7000 p
+= hexnumstr (p
, reg
->pnum
);
7003 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7007 switch (packet_ok (buf
, &remote_protocol_packets
[PACKET_p
]))
7011 case PACKET_UNKNOWN
:
7014 error (_("Could not fetch register \"%s\"; remote failure reply '%s'"),
7015 gdbarch_register_name (get_regcache_arch (regcache
),
7020 /* If this register is unfetchable, tell the regcache. */
7023 regcache_raw_supply (regcache
, reg
->regnum
, NULL
);
7027 /* Otherwise, parse and supply the value. */
7033 error (_("fetch_register_using_p: early buf termination"));
7035 regp
[i
++] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
7038 regcache_raw_supply (regcache
, reg
->regnum
, regp
);
7042 /* Fetch the registers included in the target's 'g' packet. */
7045 send_g_packet (void)
7047 struct remote_state
*rs
= get_remote_state ();
7050 xsnprintf (rs
->buf
, get_remote_packet_size (), "g");
7051 remote_send (&rs
->buf
, &rs
->buf_size
);
7053 /* We can get out of synch in various cases. If the first character
7054 in the buffer is not a hex character, assume that has happened
7055 and try to fetch another packet to read. */
7056 while ((rs
->buf
[0] < '0' || rs
->buf
[0] > '9')
7057 && (rs
->buf
[0] < 'A' || rs
->buf
[0] > 'F')
7058 && (rs
->buf
[0] < 'a' || rs
->buf
[0] > 'f')
7059 && rs
->buf
[0] != 'x') /* New: unavailable register value. */
7062 fprintf_unfiltered (gdb_stdlog
,
7063 "Bad register packet; fetching a new packet\n");
7064 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7067 buf_len
= strlen (rs
->buf
);
7069 /* Sanity check the received packet. */
7070 if (buf_len
% 2 != 0)
7071 error (_("Remote 'g' packet reply is of odd length: %s"), rs
->buf
);
7077 process_g_packet (struct regcache
*regcache
)
7079 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
7080 struct remote_state
*rs
= get_remote_state ();
7081 struct remote_arch_state
*rsa
= get_remote_arch_state ();
7086 buf_len
= strlen (rs
->buf
);
7088 /* Further sanity checks, with knowledge of the architecture. */
7089 if (buf_len
> 2 * rsa
->sizeof_g_packet
)
7090 error (_("Remote 'g' packet reply is too long: %s"), rs
->buf
);
7092 /* Save the size of the packet sent to us by the target. It is used
7093 as a heuristic when determining the max size of packets that the
7094 target can safely receive. */
7095 if (rsa
->actual_register_packet_size
== 0)
7096 rsa
->actual_register_packet_size
= buf_len
;
7098 /* If this is smaller than we guessed the 'g' packet would be,
7099 update our records. A 'g' reply that doesn't include a register's
7100 value implies either that the register is not available, or that
7101 the 'p' packet must be used. */
7102 if (buf_len
< 2 * rsa
->sizeof_g_packet
)
7104 rsa
->sizeof_g_packet
= buf_len
/ 2;
7106 for (i
= 0; i
< gdbarch_num_regs (gdbarch
); i
++)
7108 if (rsa
->regs
[i
].pnum
== -1)
7111 if (rsa
->regs
[i
].offset
>= rsa
->sizeof_g_packet
)
7112 rsa
->regs
[i
].in_g_packet
= 0;
7114 rsa
->regs
[i
].in_g_packet
= 1;
7118 regs
= (char *) alloca (rsa
->sizeof_g_packet
);
7120 /* Unimplemented registers read as all bits zero. */
7121 memset (regs
, 0, rsa
->sizeof_g_packet
);
7123 /* Reply describes registers byte by byte, each byte encoded as two
7124 hex characters. Suck them all up, then supply them to the
7125 register cacheing/storage mechanism. */
7128 for (i
= 0; i
< rsa
->sizeof_g_packet
; i
++)
7130 if (p
[0] == 0 || p
[1] == 0)
7131 /* This shouldn't happen - we adjusted sizeof_g_packet above. */
7132 internal_error (__FILE__
, __LINE__
,
7133 _("unexpected end of 'g' packet reply"));
7135 if (p
[0] == 'x' && p
[1] == 'x')
7136 regs
[i
] = 0; /* 'x' */
7138 regs
[i
] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
7142 for (i
= 0; i
< gdbarch_num_regs (gdbarch
); i
++)
7144 struct packet_reg
*r
= &rsa
->regs
[i
];
7148 if (r
->offset
* 2 >= strlen (rs
->buf
))
7149 /* This shouldn't happen - we adjusted in_g_packet above. */
7150 internal_error (__FILE__
, __LINE__
,
7151 _("unexpected end of 'g' packet reply"));
7152 else if (rs
->buf
[r
->offset
* 2] == 'x')
7154 gdb_assert (r
->offset
* 2 < strlen (rs
->buf
));
7155 /* The register isn't available, mark it as such (at
7156 the same time setting the value to zero). */
7157 regcache_raw_supply (regcache
, r
->regnum
, NULL
);
7160 regcache_raw_supply (regcache
, r
->regnum
,
7167 fetch_registers_using_g (struct regcache
*regcache
)
7170 process_g_packet (regcache
);
7173 /* Make the remote selected traceframe match GDB's selected
7177 set_remote_traceframe (void)
7180 struct remote_state
*rs
= get_remote_state ();
7182 if (rs
->remote_traceframe_number
== get_traceframe_number ())
7185 /* Avoid recursion, remote_trace_find calls us again. */
7186 rs
->remote_traceframe_number
= get_traceframe_number ();
7188 newnum
= target_trace_find (tfind_number
,
7189 get_traceframe_number (), 0, 0, NULL
);
7191 /* Should not happen. If it does, all bets are off. */
7192 if (newnum
!= get_traceframe_number ())
7193 warning (_("could not set remote traceframe"));
7197 remote_fetch_registers (struct target_ops
*ops
,
7198 struct regcache
*regcache
, int regnum
)
7200 struct remote_arch_state
*rsa
= get_remote_arch_state ();
7203 set_remote_traceframe ();
7204 set_general_thread (inferior_ptid
);
7208 struct packet_reg
*reg
= packet_reg_from_regnum (rsa
, regnum
);
7210 gdb_assert (reg
!= NULL
);
7212 /* If this register might be in the 'g' packet, try that first -
7213 we are likely to read more than one register. If this is the
7214 first 'g' packet, we might be overly optimistic about its
7215 contents, so fall back to 'p'. */
7216 if (reg
->in_g_packet
)
7218 fetch_registers_using_g (regcache
);
7219 if (reg
->in_g_packet
)
7223 if (fetch_register_using_p (regcache
, reg
))
7226 /* This register is not available. */
7227 regcache_raw_supply (regcache
, reg
->regnum
, NULL
);
7232 fetch_registers_using_g (regcache
);
7234 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
7235 if (!rsa
->regs
[i
].in_g_packet
)
7236 if (!fetch_register_using_p (regcache
, &rsa
->regs
[i
]))
7238 /* This register is not available. */
7239 regcache_raw_supply (regcache
, i
, NULL
);
7243 /* Prepare to store registers. Since we may send them all (using a
7244 'G' request), we have to read out the ones we don't want to change
7248 remote_prepare_to_store (struct target_ops
*self
, struct regcache
*regcache
)
7250 struct remote_arch_state
*rsa
= get_remote_arch_state ();
7252 gdb_byte buf
[MAX_REGISTER_SIZE
];
7254 /* Make sure the entire registers array is valid. */
7255 switch (packet_support (PACKET_P
))
7257 case PACKET_DISABLE
:
7258 case PACKET_SUPPORT_UNKNOWN
:
7259 /* Make sure all the necessary registers are cached. */
7260 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
7261 if (rsa
->regs
[i
].in_g_packet
)
7262 regcache_raw_read (regcache
, rsa
->regs
[i
].regnum
, buf
);
7269 /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF
7270 packet was not recognized. */
7273 store_register_using_P (const struct regcache
*regcache
,
7274 struct packet_reg
*reg
)
7276 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
7277 struct remote_state
*rs
= get_remote_state ();
7278 /* Try storing a single register. */
7279 char *buf
= rs
->buf
;
7280 gdb_byte regp
[MAX_REGISTER_SIZE
];
7283 if (packet_support (PACKET_P
) == PACKET_DISABLE
)
7286 if (reg
->pnum
== -1)
7289 xsnprintf (buf
, get_remote_packet_size (), "P%s=", phex_nz (reg
->pnum
, 0));
7290 p
= buf
+ strlen (buf
);
7291 regcache_raw_collect (regcache
, reg
->regnum
, regp
);
7292 bin2hex (regp
, p
, register_size (gdbarch
, reg
->regnum
));
7294 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7296 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_P
]))
7301 error (_("Could not write register \"%s\"; remote failure reply '%s'"),
7302 gdbarch_register_name (gdbarch
, reg
->regnum
), rs
->buf
);
7303 case PACKET_UNKNOWN
:
7306 internal_error (__FILE__
, __LINE__
, _("Bad result from packet_ok"));
7310 /* Store register REGNUM, or all registers if REGNUM == -1, from the
7311 contents of the register cache buffer. FIXME: ignores errors. */
7314 store_registers_using_G (const struct regcache
*regcache
)
7316 struct remote_state
*rs
= get_remote_state ();
7317 struct remote_arch_state
*rsa
= get_remote_arch_state ();
7321 /* Extract all the registers in the regcache copying them into a
7326 regs
= (gdb_byte
*) alloca (rsa
->sizeof_g_packet
);
7327 memset (regs
, 0, rsa
->sizeof_g_packet
);
7328 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
7330 struct packet_reg
*r
= &rsa
->regs
[i
];
7333 regcache_raw_collect (regcache
, r
->regnum
, regs
+ r
->offset
);
7337 /* Command describes registers byte by byte,
7338 each byte encoded as two hex characters. */
7341 /* remote_prepare_to_store insures that rsa->sizeof_g_packet gets
7343 bin2hex (regs
, p
, rsa
->sizeof_g_packet
);
7345 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7346 if (packet_check_result (rs
->buf
) == PACKET_ERROR
)
7347 error (_("Could not write registers; remote failure reply '%s'"),
7351 /* Store register REGNUM, or all registers if REGNUM == -1, from the contents
7352 of the register cache buffer. FIXME: ignores errors. */
7355 remote_store_registers (struct target_ops
*ops
,
7356 struct regcache
*regcache
, int regnum
)
7358 struct remote_arch_state
*rsa
= get_remote_arch_state ();
7361 set_remote_traceframe ();
7362 set_general_thread (inferior_ptid
);
7366 struct packet_reg
*reg
= packet_reg_from_regnum (rsa
, regnum
);
7368 gdb_assert (reg
!= NULL
);
7370 /* Always prefer to store registers using the 'P' packet if
7371 possible; we often change only a small number of registers.
7372 Sometimes we change a larger number; we'd need help from a
7373 higher layer to know to use 'G'. */
7374 if (store_register_using_P (regcache
, reg
))
7377 /* For now, don't complain if we have no way to write the
7378 register. GDB loses track of unavailable registers too
7379 easily. Some day, this may be an error. We don't have
7380 any way to read the register, either... */
7381 if (!reg
->in_g_packet
)
7384 store_registers_using_G (regcache
);
7388 store_registers_using_G (regcache
);
7390 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
7391 if (!rsa
->regs
[i
].in_g_packet
)
7392 if (!store_register_using_P (regcache
, &rsa
->regs
[i
]))
7393 /* See above for why we do not issue an error here. */
7398 /* Return the number of hex digits in num. */
7401 hexnumlen (ULONGEST num
)
7405 for (i
= 0; num
!= 0; i
++)
7411 /* Set BUF to the minimum number of hex digits representing NUM. */
7414 hexnumstr (char *buf
, ULONGEST num
)
7416 int len
= hexnumlen (num
);
7418 return hexnumnstr (buf
, num
, len
);
7422 /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */
7425 hexnumnstr (char *buf
, ULONGEST num
, int width
)
7431 for (i
= width
- 1; i
>= 0; i
--)
7433 buf
[i
] = "0123456789abcdef"[(num
& 0xf)];
7440 /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */
7443 remote_address_masked (CORE_ADDR addr
)
7445 unsigned int address_size
= remote_address_size
;
7447 /* If "remoteaddresssize" was not set, default to target address size. */
7449 address_size
= gdbarch_addr_bit (target_gdbarch ());
7451 if (address_size
> 0
7452 && address_size
< (sizeof (ULONGEST
) * 8))
7454 /* Only create a mask when that mask can safely be constructed
7455 in a ULONGEST variable. */
7458 mask
= (mask
<< address_size
) - 1;
7464 /* Determine whether the remote target supports binary downloading.
7465 This is accomplished by sending a no-op memory write of zero length
7466 to the target at the specified address. It does not suffice to send
7467 the whole packet, since many stubs strip the eighth bit and
7468 subsequently compute a wrong checksum, which causes real havoc with
7471 NOTE: This can still lose if the serial line is not eight-bit
7472 clean. In cases like this, the user should clear "remote
7476 check_binary_download (CORE_ADDR addr
)
7478 struct remote_state
*rs
= get_remote_state ();
7480 switch (packet_support (PACKET_X
))
7482 case PACKET_DISABLE
:
7486 case PACKET_SUPPORT_UNKNOWN
:
7492 p
+= hexnumstr (p
, (ULONGEST
) addr
);
7494 p
+= hexnumstr (p
, (ULONGEST
) 0);
7498 putpkt_binary (rs
->buf
, (int) (p
- rs
->buf
));
7499 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7501 if (rs
->buf
[0] == '\0')
7504 fprintf_unfiltered (gdb_stdlog
,
7505 "binary downloading NOT "
7506 "supported by target\n");
7507 remote_protocol_packets
[PACKET_X
].support
= PACKET_DISABLE
;
7512 fprintf_unfiltered (gdb_stdlog
,
7513 "binary downloading supported by target\n");
7514 remote_protocol_packets
[PACKET_X
].support
= PACKET_ENABLE
;
7521 /* Helper function to resize the payload in order to try to get a good
7522 alignment. We try to write an amount of data such that the next write will
7523 start on an address aligned on REMOTE_ALIGN_WRITES. */
7526 align_for_efficient_write (int todo
, CORE_ADDR memaddr
)
7528 return ((memaddr
+ todo
) & ~(REMOTE_ALIGN_WRITES
- 1)) - memaddr
;
7531 /* Write memory data directly to the remote machine.
7532 This does not inform the data cache; the data cache uses this.
7533 HEADER is the starting part of the packet.
7534 MEMADDR is the address in the remote memory space.
7535 MYADDR is the address of the buffer in our space.
7536 LEN_UNITS is the number of addressable units to write.
7537 UNIT_SIZE is the length in bytes of an addressable unit.
7538 PACKET_FORMAT should be either 'X' or 'M', and indicates if we
7539 should send data as binary ('X'), or hex-encoded ('M').
7541 The function creates packet of the form
7542 <HEADER><ADDRESS>,<LENGTH>:<DATA>
7544 where encoding of <DATA> is terminated by PACKET_FORMAT.
7546 If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma
7549 Return the transferred status, error or OK (an
7550 'enum target_xfer_status' value). Save the number of addressable units
7551 transferred in *XFERED_LEN_UNITS. Only transfer a single packet.
7553 On a platform with an addressable memory size of 2 bytes (UNIT_SIZE == 2), an
7554 exchange between gdb and the stub could look like (?? in place of the
7560 -> $M1000,3:eeeeffffeeee#??
7564 <- eeeeffffeeeedddd */
7566 static enum target_xfer_status
7567 remote_write_bytes_aux (const char *header
, CORE_ADDR memaddr
,
7568 const gdb_byte
*myaddr
, ULONGEST len_units
,
7569 int unit_size
, ULONGEST
*xfered_len_units
,
7570 char packet_format
, int use_length
)
7572 struct remote_state
*rs
= get_remote_state ();
7578 int payload_capacity_bytes
;
7579 int payload_length_bytes
;
7581 if (packet_format
!= 'X' && packet_format
!= 'M')
7582 internal_error (__FILE__
, __LINE__
,
7583 _("remote_write_bytes_aux: bad packet format"));
7586 return TARGET_XFER_EOF
;
7588 payload_capacity_bytes
= get_memory_write_packet_size ();
7590 /* The packet buffer will be large enough for the payload;
7591 get_memory_packet_size ensures this. */
7594 /* Compute the size of the actual payload by subtracting out the
7595 packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */
7597 payload_capacity_bytes
-= strlen ("$,:#NN");
7599 /* The comma won't be used. */
7600 payload_capacity_bytes
+= 1;
7601 payload_capacity_bytes
-= strlen (header
);
7602 payload_capacity_bytes
-= hexnumlen (memaddr
);
7604 /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */
7606 strcat (rs
->buf
, header
);
7607 p
= rs
->buf
+ strlen (header
);
7609 /* Compute a best guess of the number of bytes actually transfered. */
7610 if (packet_format
== 'X')
7612 /* Best guess at number of bytes that will fit. */
7613 todo_units
= min (len_units
, payload_capacity_bytes
/ unit_size
);
7615 payload_capacity_bytes
-= hexnumlen (todo_units
);
7616 todo_units
= min (todo_units
, payload_capacity_bytes
/ unit_size
);
7620 /* Number of bytes that will fit. */
7621 todo_units
= min (len_units
, (payload_capacity_bytes
/ unit_size
) / 2);
7623 payload_capacity_bytes
-= hexnumlen (todo_units
);
7624 todo_units
= min (todo_units
, (payload_capacity_bytes
/ unit_size
) / 2);
7627 if (todo_units
<= 0)
7628 internal_error (__FILE__
, __LINE__
,
7629 _("minimum packet size too small to write data"));
7631 /* If we already need another packet, then try to align the end
7632 of this packet to a useful boundary. */
7633 if (todo_units
> 2 * REMOTE_ALIGN_WRITES
&& todo_units
< len_units
)
7634 todo_units
= align_for_efficient_write (todo_units
, memaddr
);
7636 /* Append "<memaddr>". */
7637 memaddr
= remote_address_masked (memaddr
);
7638 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
7645 /* Append the length and retain its location and size. It may need to be
7646 adjusted once the packet body has been created. */
7648 plenlen
= hexnumstr (p
, (ULONGEST
) todo_units
);
7656 /* Append the packet body. */
7657 if (packet_format
== 'X')
7659 /* Binary mode. Send target system values byte by byte, in
7660 increasing byte addresses. Only escape certain critical
7662 payload_length_bytes
=
7663 remote_escape_output (myaddr
, todo_units
, unit_size
, (gdb_byte
*) p
,
7664 &units_written
, payload_capacity_bytes
);
7666 /* If not all TODO units fit, then we'll need another packet. Make
7667 a second try to keep the end of the packet aligned. Don't do
7668 this if the packet is tiny. */
7669 if (units_written
< todo_units
&& units_written
> 2 * REMOTE_ALIGN_WRITES
)
7673 new_todo_units
= align_for_efficient_write (units_written
, memaddr
);
7675 if (new_todo_units
!= units_written
)
7676 payload_length_bytes
=
7677 remote_escape_output (myaddr
, new_todo_units
, unit_size
,
7678 (gdb_byte
*) p
, &units_written
,
7679 payload_capacity_bytes
);
7682 p
+= payload_length_bytes
;
7683 if (use_length
&& units_written
< todo_units
)
7685 /* Escape chars have filled up the buffer prematurely,
7686 and we have actually sent fewer units than planned.
7687 Fix-up the length field of the packet. Use the same
7688 number of characters as before. */
7689 plen
+= hexnumnstr (plen
, (ULONGEST
) units_written
,
7691 *plen
= ':'; /* overwrite \0 from hexnumnstr() */
7696 /* Normal mode: Send target system values byte by byte, in
7697 increasing byte addresses. Each byte is encoded as a two hex
7699 p
+= 2 * bin2hex (myaddr
, p
, todo_units
* unit_size
);
7700 units_written
= todo_units
;
7703 putpkt_binary (rs
->buf
, (int) (p
- rs
->buf
));
7704 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7706 if (rs
->buf
[0] == 'E')
7707 return TARGET_XFER_E_IO
;
7709 /* Return UNITS_WRITTEN, not TODO_UNITS, in case escape chars caused us to
7710 send fewer units than we'd planned. */
7711 *xfered_len_units
= (ULONGEST
) units_written
;
7712 return TARGET_XFER_OK
;
7715 /* Write memory data directly to the remote machine.
7716 This does not inform the data cache; the data cache uses this.
7717 MEMADDR is the address in the remote memory space.
7718 MYADDR is the address of the buffer in our space.
7719 LEN is the number of bytes.
7721 Return the transferred status, error or OK (an
7722 'enum target_xfer_status' value). Save the number of bytes
7723 transferred in *XFERED_LEN. Only transfer a single packet. */
7725 static enum target_xfer_status
7726 remote_write_bytes (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ULONGEST len
,
7727 int unit_size
, ULONGEST
*xfered_len
)
7729 char *packet_format
= 0;
7731 /* Check whether the target supports binary download. */
7732 check_binary_download (memaddr
);
7734 switch (packet_support (PACKET_X
))
7737 packet_format
= "X";
7739 case PACKET_DISABLE
:
7740 packet_format
= "M";
7742 case PACKET_SUPPORT_UNKNOWN
:
7743 internal_error (__FILE__
, __LINE__
,
7744 _("remote_write_bytes: bad internal state"));
7746 internal_error (__FILE__
, __LINE__
, _("bad switch"));
7749 return remote_write_bytes_aux (packet_format
,
7750 memaddr
, myaddr
, len
, unit_size
, xfered_len
,
7751 packet_format
[0], 1);
7754 /* Read memory data directly from the remote machine.
7755 This does not use the data cache; the data cache uses this.
7756 MEMADDR is the address in the remote memory space.
7757 MYADDR is the address of the buffer in our space.
7758 LEN_UNITS is the number of addressable memory units to read..
7759 UNIT_SIZE is the length in bytes of an addressable unit.
7761 Return the transferred status, error or OK (an
7762 'enum target_xfer_status' value). Save the number of bytes
7763 transferred in *XFERED_LEN_UNITS.
7765 See the comment of remote_write_bytes_aux for an example of
7766 memory read/write exchange between gdb and the stub. */
7768 static enum target_xfer_status
7769 remote_read_bytes_1 (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ULONGEST len_units
,
7770 int unit_size
, ULONGEST
*xfered_len_units
)
7772 struct remote_state
*rs
= get_remote_state ();
7773 int buf_size_bytes
; /* Max size of packet output buffer. */
7778 buf_size_bytes
= get_memory_read_packet_size ();
7779 /* The packet buffer will be large enough for the payload;
7780 get_memory_packet_size ensures this. */
7782 /* Number of units that will fit. */
7783 todo_units
= min (len_units
, (buf_size_bytes
/ unit_size
) / 2);
7785 /* Construct "m"<memaddr>","<len>". */
7786 memaddr
= remote_address_masked (memaddr
);
7789 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
7791 p
+= hexnumstr (p
, (ULONGEST
) todo_units
);
7794 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7795 if (rs
->buf
[0] == 'E'
7796 && isxdigit (rs
->buf
[1]) && isxdigit (rs
->buf
[2])
7797 && rs
->buf
[3] == '\0')
7798 return TARGET_XFER_E_IO
;
7799 /* Reply describes memory byte by byte, each byte encoded as two hex
7802 decoded_bytes
= hex2bin (p
, myaddr
, todo_units
* unit_size
);
7803 /* Return what we have. Let higher layers handle partial reads. */
7804 *xfered_len_units
= (ULONGEST
) (decoded_bytes
/ unit_size
);
7805 return TARGET_XFER_OK
;
7808 /* Using the set of read-only target sections of remote, read live
7811 For interface/parameters/return description see target.h,
7814 static enum target_xfer_status
7815 remote_xfer_live_readonly_partial (struct target_ops
*ops
, gdb_byte
*readbuf
,
7816 ULONGEST memaddr
, ULONGEST len
,
7817 int unit_size
, ULONGEST
*xfered_len
)
7819 struct target_section
*secp
;
7820 struct target_section_table
*table
;
7822 secp
= target_section_by_addr (ops
, memaddr
);
7824 && (bfd_get_section_flags (secp
->the_bfd_section
->owner
,
7825 secp
->the_bfd_section
)
7828 struct target_section
*p
;
7829 ULONGEST memend
= memaddr
+ len
;
7831 table
= target_get_section_table (ops
);
7833 for (p
= table
->sections
; p
< table
->sections_end
; p
++)
7835 if (memaddr
>= p
->addr
)
7837 if (memend
<= p
->endaddr
)
7839 /* Entire transfer is within this section. */
7840 return remote_read_bytes_1 (memaddr
, readbuf
, len
, unit_size
,
7843 else if (memaddr
>= p
->endaddr
)
7845 /* This section ends before the transfer starts. */
7850 /* This section overlaps the transfer. Just do half. */
7851 len
= p
->endaddr
- memaddr
;
7852 return remote_read_bytes_1 (memaddr
, readbuf
, len
, unit_size
,
7859 return TARGET_XFER_EOF
;
7862 /* Similar to remote_read_bytes_1, but it reads from the remote stub
7863 first if the requested memory is unavailable in traceframe.
7864 Otherwise, fall back to remote_read_bytes_1. */
7866 static enum target_xfer_status
7867 remote_read_bytes (struct target_ops
*ops
, CORE_ADDR memaddr
,
7868 gdb_byte
*myaddr
, ULONGEST len
, int unit_size
,
7869 ULONGEST
*xfered_len
)
7872 return TARGET_XFER_EOF
;
7874 if (get_traceframe_number () != -1)
7876 VEC(mem_range_s
) *available
;
7878 /* If we fail to get the set of available memory, then the
7879 target does not support querying traceframe info, and so we
7880 attempt reading from the traceframe anyway (assuming the
7881 target implements the old QTro packet then). */
7882 if (traceframe_available_memory (&available
, memaddr
, len
))
7884 struct cleanup
*old_chain
;
7886 old_chain
= make_cleanup (VEC_cleanup(mem_range_s
), &available
);
7888 if (VEC_empty (mem_range_s
, available
)
7889 || VEC_index (mem_range_s
, available
, 0)->start
!= memaddr
)
7891 enum target_xfer_status res
;
7893 /* Don't read into the traceframe's available
7895 if (!VEC_empty (mem_range_s
, available
))
7897 LONGEST oldlen
= len
;
7899 len
= VEC_index (mem_range_s
, available
, 0)->start
- memaddr
;
7900 gdb_assert (len
<= oldlen
);
7903 do_cleanups (old_chain
);
7905 /* This goes through the topmost target again. */
7906 res
= remote_xfer_live_readonly_partial (ops
, myaddr
, memaddr
,
7907 len
, unit_size
, xfered_len
);
7908 if (res
== TARGET_XFER_OK
)
7909 return TARGET_XFER_OK
;
7912 /* No use trying further, we know some memory starting
7913 at MEMADDR isn't available. */
7915 return TARGET_XFER_UNAVAILABLE
;
7919 /* Don't try to read more than how much is available, in
7920 case the target implements the deprecated QTro packet to
7921 cater for older GDBs (the target's knowledge of read-only
7922 sections may be outdated by now). */
7923 len
= VEC_index (mem_range_s
, available
, 0)->length
;
7925 do_cleanups (old_chain
);
7929 return remote_read_bytes_1 (memaddr
, myaddr
, len
, unit_size
, xfered_len
);
7934 /* Sends a packet with content determined by the printf format string
7935 FORMAT and the remaining arguments, then gets the reply. Returns
7936 whether the packet was a success, a failure, or unknown. */
7938 static enum packet_result
remote_send_printf (const char *format
, ...)
7939 ATTRIBUTE_PRINTF (1, 2);
7941 static enum packet_result
7942 remote_send_printf (const char *format
, ...)
7944 struct remote_state
*rs
= get_remote_state ();
7945 int max_size
= get_remote_packet_size ();
7948 va_start (ap
, format
);
7951 if (vsnprintf (rs
->buf
, max_size
, format
, ap
) >= max_size
)
7952 internal_error (__FILE__
, __LINE__
, _("Too long remote packet."));
7954 if (putpkt (rs
->buf
) < 0)
7955 error (_("Communication problem with target."));
7958 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7960 return packet_check_result (rs
->buf
);
7964 restore_remote_timeout (void *p
)
7966 int value
= *(int *)p
;
7968 remote_timeout
= value
;
7971 /* Flash writing can take quite some time. We'll set
7972 effectively infinite timeout for flash operations.
7973 In future, we'll need to decide on a better approach. */
7974 static const int remote_flash_timeout
= 1000;
7977 remote_flash_erase (struct target_ops
*ops
,
7978 ULONGEST address
, LONGEST length
)
7980 int addr_size
= gdbarch_addr_bit (target_gdbarch ()) / 8;
7981 int saved_remote_timeout
= remote_timeout
;
7982 enum packet_result ret
;
7983 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
7984 &saved_remote_timeout
);
7986 remote_timeout
= remote_flash_timeout
;
7988 ret
= remote_send_printf ("vFlashErase:%s,%s",
7989 phex (address
, addr_size
),
7993 case PACKET_UNKNOWN
:
7994 error (_("Remote target does not support flash erase"));
7996 error (_("Error erasing flash with vFlashErase packet"));
8001 do_cleanups (back_to
);
8004 static enum target_xfer_status
8005 remote_flash_write (struct target_ops
*ops
, ULONGEST address
,
8006 ULONGEST length
, ULONGEST
*xfered_len
,
8007 const gdb_byte
*data
)
8009 int saved_remote_timeout
= remote_timeout
;
8010 enum target_xfer_status ret
;
8011 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
8012 &saved_remote_timeout
);
8014 remote_timeout
= remote_flash_timeout
;
8015 ret
= remote_write_bytes_aux ("vFlashWrite:", address
, data
, length
, 1,
8017 do_cleanups (back_to
);
8023 remote_flash_done (struct target_ops
*ops
)
8025 int saved_remote_timeout
= remote_timeout
;
8027 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
8028 &saved_remote_timeout
);
8030 remote_timeout
= remote_flash_timeout
;
8031 ret
= remote_send_printf ("vFlashDone");
8032 do_cleanups (back_to
);
8036 case PACKET_UNKNOWN
:
8037 error (_("Remote target does not support vFlashDone"));
8039 error (_("Error finishing flash operation"));
8046 remote_files_info (struct target_ops
*ignore
)
8048 puts_filtered ("Debugging a target over a serial line.\n");
8051 /* Stuff for dealing with the packets which are part of this protocol.
8052 See comment at top of file for details. */
8054 /* Close/unpush the remote target, and throw a TARGET_CLOSE_ERROR
8055 error to higher layers. Called when a serial error is detected.
8056 The exception message is STRING, followed by a colon and a blank,
8057 the system error message for errno at function entry and final dot
8058 for output compatibility with throw_perror_with_name. */
8061 unpush_and_perror (const char *string
)
8063 int saved_errno
= errno
;
8065 remote_unpush_target ();
8066 throw_error (TARGET_CLOSE_ERROR
, "%s: %s.", string
,
8067 safe_strerror (saved_errno
));
8070 /* Read a single character from the remote end. */
8073 readchar (int timeout
)
8076 struct remote_state
*rs
= get_remote_state ();
8078 ch
= serial_readchar (rs
->remote_desc
, timeout
);
8083 switch ((enum serial_rc
) ch
)
8086 remote_unpush_target ();
8087 throw_error (TARGET_CLOSE_ERROR
, _("Remote connection closed"));
8090 unpush_and_perror (_("Remote communication error. "
8091 "Target disconnected."));
8093 case SERIAL_TIMEOUT
:
8099 /* Wrapper for serial_write that closes the target and throws if
8103 remote_serial_write (const char *str
, int len
)
8105 struct remote_state
*rs
= get_remote_state ();
8107 if (serial_write (rs
->remote_desc
, str
, len
))
8109 unpush_and_perror (_("Remote communication error. "
8110 "Target disconnected."));
8114 /* Send the command in *BUF to the remote machine, and read the reply
8115 into *BUF. Report an error if we get an error reply. Resize
8116 *BUF using xrealloc if necessary to hold the result, and update
8120 remote_send (char **buf
,
8124 getpkt (buf
, sizeof_buf
, 0);
8126 if ((*buf
)[0] == 'E')
8127 error (_("Remote failure reply: %s"), *buf
);
8130 /* Return a pointer to an xmalloc'ed string representing an escaped
8131 version of BUF, of len N. E.g. \n is converted to \\n, \t to \\t,
8132 etc. The caller is responsible for releasing the returned
8136 escape_buffer (const char *buf
, int n
)
8138 struct cleanup
*old_chain
;
8139 struct ui_file
*stb
;
8142 stb
= mem_fileopen ();
8143 old_chain
= make_cleanup_ui_file_delete (stb
);
8145 fputstrn_unfiltered (buf
, n
, '\\', stb
);
8146 str
= ui_file_xstrdup (stb
, NULL
);
8147 do_cleanups (old_chain
);
8151 /* Display a null-terminated packet on stdout, for debugging, using C
8155 print_packet (const char *buf
)
8157 puts_filtered ("\"");
8158 fputstr_filtered (buf
, '"', gdb_stdout
);
8159 puts_filtered ("\"");
8163 putpkt (const char *buf
)
8165 return putpkt_binary (buf
, strlen (buf
));
8168 /* Send a packet to the remote machine, with error checking. The data
8169 of the packet is in BUF. The string in BUF can be at most
8170 get_remote_packet_size () - 5 to account for the $, # and checksum,
8171 and for a possible /0 if we are debugging (remote_debug) and want
8172 to print the sent packet as a string. */
8175 putpkt_binary (const char *buf
, int cnt
)
8177 struct remote_state
*rs
= get_remote_state ();
8179 unsigned char csum
= 0;
8180 char *buf2
= (char *) xmalloc (cnt
+ 6);
8181 struct cleanup
*old_chain
= make_cleanup (xfree
, buf2
);
8188 /* Catch cases like trying to read memory or listing threads while
8189 we're waiting for a stop reply. The remote server wouldn't be
8190 ready to handle this request, so we'd hang and timeout. We don't
8191 have to worry about this in synchronous mode, because in that
8192 case it's not possible to issue a command while the target is
8193 running. This is not a problem in non-stop mode, because in that
8194 case, the stub is always ready to process serial input. */
8195 if (!target_is_non_stop_p ()
8196 && target_is_async_p ()
8197 && rs
->waiting_for_stop_reply
)
8199 error (_("Cannot execute this command while the target is running.\n"
8200 "Use the \"interrupt\" command to stop the target\n"
8201 "and then try again."));
8204 /* We're sending out a new packet. Make sure we don't look at a
8205 stale cached response. */
8206 rs
->cached_wait_status
= 0;
8208 /* Copy the packet into buffer BUF2, encapsulating it
8209 and giving it a checksum. */
8214 for (i
= 0; i
< cnt
; i
++)
8220 *p
++ = tohex ((csum
>> 4) & 0xf);
8221 *p
++ = tohex (csum
& 0xf);
8223 /* Send it over and over until we get a positive ack. */
8227 int started_error_output
= 0;
8231 struct cleanup
*old_chain
;
8235 str
= escape_buffer (buf2
, p
- buf2
);
8236 old_chain
= make_cleanup (xfree
, str
);
8237 fprintf_unfiltered (gdb_stdlog
, "Sending packet: %s...", str
);
8238 gdb_flush (gdb_stdlog
);
8239 do_cleanups (old_chain
);
8241 remote_serial_write (buf2
, p
- buf2
);
8243 /* If this is a no acks version of the remote protocol, send the
8244 packet and move on. */
8248 /* Read until either a timeout occurs (-2) or '+' is read.
8249 Handle any notification that arrives in the mean time. */
8252 ch
= readchar (remote_timeout
);
8260 case SERIAL_TIMEOUT
:
8263 if (started_error_output
)
8265 putchar_unfiltered ('\n');
8266 started_error_output
= 0;
8275 fprintf_unfiltered (gdb_stdlog
, "Ack\n");
8276 do_cleanups (old_chain
);
8280 fprintf_unfiltered (gdb_stdlog
, "Nak\n");
8282 case SERIAL_TIMEOUT
:
8286 do_cleanups (old_chain
);
8289 break; /* Retransmit buffer. */
8293 fprintf_unfiltered (gdb_stdlog
,
8294 "Packet instead of Ack, ignoring it\n");
8295 /* It's probably an old response sent because an ACK
8296 was lost. Gobble up the packet and ack it so it
8297 doesn't get retransmitted when we resend this
8300 remote_serial_write ("+", 1);
8301 continue; /* Now, go look for +. */
8308 /* If we got a notification, handle it, and go back to looking
8310 /* We've found the start of a notification. Now
8311 collect the data. */
8312 val
= read_frame (&rs
->buf
, &rs
->buf_size
);
8317 struct cleanup
*old_chain
;
8320 str
= escape_buffer (rs
->buf
, val
);
8321 old_chain
= make_cleanup (xfree
, str
);
8322 fprintf_unfiltered (gdb_stdlog
,
8323 " Notification received: %s\n",
8325 do_cleanups (old_chain
);
8327 handle_notification (rs
->notif_state
, rs
->buf
);
8328 /* We're in sync now, rewait for the ack. */
8335 if (!started_error_output
)
8337 started_error_output
= 1;
8338 fprintf_unfiltered (gdb_stdlog
, "putpkt: Junk: ");
8340 fputc_unfiltered (ch
& 0177, gdb_stdlog
);
8341 fprintf_unfiltered (gdb_stdlog
, "%s", rs
->buf
);
8350 if (!started_error_output
)
8352 started_error_output
= 1;
8353 fprintf_unfiltered (gdb_stdlog
, "putpkt: Junk: ");
8355 fputc_unfiltered (ch
& 0177, gdb_stdlog
);
8359 break; /* Here to retransmit. */
8363 /* This is wrong. If doing a long backtrace, the user should be
8364 able to get out next time we call QUIT, without anything as
8365 violent as interrupt_query. If we want to provide a way out of
8366 here without getting to the next QUIT, it should be based on
8367 hitting ^C twice as in remote_wait. */
8376 do_cleanups (old_chain
);
8380 /* Come here after finding the start of a frame when we expected an
8381 ack. Do our best to discard the rest of this packet. */
8390 c
= readchar (remote_timeout
);
8393 case SERIAL_TIMEOUT
:
8394 /* Nothing we can do. */
8397 /* Discard the two bytes of checksum and stop. */
8398 c
= readchar (remote_timeout
);
8400 c
= readchar (remote_timeout
);
8403 case '*': /* Run length encoding. */
8404 /* Discard the repeat count. */
8405 c
= readchar (remote_timeout
);
8410 /* A regular character. */
8416 /* Come here after finding the start of the frame. Collect the rest
8417 into *BUF, verifying the checksum, length, and handling run-length
8418 compression. NUL terminate the buffer. If there is not enough room,
8419 expand *BUF using xrealloc.
8421 Returns -1 on error, number of characters in buffer (ignoring the
8422 trailing NULL) on success. (could be extended to return one of the
8423 SERIAL status indications). */
8426 read_frame (char **buf_p
,
8433 struct remote_state
*rs
= get_remote_state ();
8440 c
= readchar (remote_timeout
);
8443 case SERIAL_TIMEOUT
:
8445 fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog
);
8449 fputs_filtered ("Saw new packet start in middle of old one\n",
8451 return -1; /* Start a new packet, count retries. */
8454 unsigned char pktcsum
;
8460 check_0
= readchar (remote_timeout
);
8462 check_1
= readchar (remote_timeout
);
8464 if (check_0
== SERIAL_TIMEOUT
|| check_1
== SERIAL_TIMEOUT
)
8467 fputs_filtered ("Timeout in checksum, retrying\n",
8471 else if (check_0
< 0 || check_1
< 0)
8474 fputs_filtered ("Communication error in checksum\n",
8479 /* Don't recompute the checksum; with no ack packets we
8480 don't have any way to indicate a packet retransmission
8485 pktcsum
= (fromhex (check_0
) << 4) | fromhex (check_1
);
8486 if (csum
== pktcsum
)
8491 struct cleanup
*old_chain
;
8494 str
= escape_buffer (buf
, bc
);
8495 old_chain
= make_cleanup (xfree
, str
);
8496 fprintf_unfiltered (gdb_stdlog
,
8497 "Bad checksum, sentsum=0x%x, "
8498 "csum=0x%x, buf=%s\n",
8499 pktcsum
, csum
, str
);
8500 do_cleanups (old_chain
);
8502 /* Number of characters in buffer ignoring trailing
8506 case '*': /* Run length encoding. */
8511 c
= readchar (remote_timeout
);
8513 repeat
= c
- ' ' + 3; /* Compute repeat count. */
8515 /* The character before ``*'' is repeated. */
8517 if (repeat
> 0 && repeat
<= 255 && bc
> 0)
8519 if (bc
+ repeat
- 1 >= *sizeof_buf
- 1)
8521 /* Make some more room in the buffer. */
8522 *sizeof_buf
+= repeat
;
8523 *buf_p
= (char *) xrealloc (*buf_p
, *sizeof_buf
);
8527 memset (&buf
[bc
], buf
[bc
- 1], repeat
);
8533 printf_filtered (_("Invalid run length encoding: %s\n"), buf
);
8537 if (bc
>= *sizeof_buf
- 1)
8539 /* Make some more room in the buffer. */
8541 *buf_p
= (char *) xrealloc (*buf_p
, *sizeof_buf
);
8552 /* Read a packet from the remote machine, with error checking, and
8553 store it in *BUF. Resize *BUF using xrealloc if necessary to hold
8554 the result, and update *SIZEOF_BUF. If FOREVER, wait forever
8555 rather than timing out; this is used (in synchronous mode) to wait
8556 for a target that is is executing user code to stop. */
8557 /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we
8558 don't have to change all the calls to getpkt to deal with the
8559 return value, because at the moment I don't know what the right
8560 thing to do it for those. */
8568 timed_out
= getpkt_sane (buf
, sizeof_buf
, forever
);
8572 /* Read a packet from the remote machine, with error checking, and
8573 store it in *BUF. Resize *BUF using xrealloc if necessary to hold
8574 the result, and update *SIZEOF_BUF. If FOREVER, wait forever
8575 rather than timing out; this is used (in synchronous mode) to wait
8576 for a target that is is executing user code to stop. If FOREVER ==
8577 0, this function is allowed to time out gracefully and return an
8578 indication of this to the caller. Otherwise return the number of
8579 bytes read. If EXPECTING_NOTIF, consider receiving a notification
8580 enough reason to return to the caller. *IS_NOTIF is an output
8581 boolean that indicates whether *BUF holds a notification or not
8582 (a regular packet). */
8585 getpkt_or_notif_sane_1 (char **buf
, long *sizeof_buf
, int forever
,
8586 int expecting_notif
, int *is_notif
)
8588 struct remote_state
*rs
= get_remote_state ();
8594 /* We're reading a new response. Make sure we don't look at a
8595 previously cached response. */
8596 rs
->cached_wait_status
= 0;
8598 strcpy (*buf
, "timeout");
8601 timeout
= watchdog
> 0 ? watchdog
: -1;
8602 else if (expecting_notif
)
8603 timeout
= 0; /* There should already be a char in the buffer. If
8606 timeout
= remote_timeout
;
8610 /* Process any number of notifications, and then return when
8614 /* If we get a timeout or bad checksum, retry up to MAX_TRIES
8616 for (tries
= 1; tries
<= MAX_TRIES
; tries
++)
8618 /* This can loop forever if the remote side sends us
8619 characters continuously, but if it pauses, we'll get
8620 SERIAL_TIMEOUT from readchar because of timeout. Then
8621 we'll count that as a retry.
8623 Note that even when forever is set, we will only wait
8624 forever prior to the start of a packet. After that, we
8625 expect characters to arrive at a brisk pace. They should
8626 show up within remote_timeout intervals. */
8628 c
= readchar (timeout
);
8629 while (c
!= SERIAL_TIMEOUT
&& c
!= '$' && c
!= '%');
8631 if (c
== SERIAL_TIMEOUT
)
8633 if (expecting_notif
)
8634 return -1; /* Don't complain, it's normal to not get
8635 anything in this case. */
8637 if (forever
) /* Watchdog went off? Kill the target. */
8640 remote_unpush_target ();
8641 throw_error (TARGET_CLOSE_ERROR
,
8642 _("Watchdog timeout has expired. "
8643 "Target detached."));
8646 fputs_filtered ("Timed out.\n", gdb_stdlog
);
8650 /* We've found the start of a packet or notification.
8651 Now collect the data. */
8652 val
= read_frame (buf
, sizeof_buf
);
8657 remote_serial_write ("-", 1);
8660 if (tries
> MAX_TRIES
)
8662 /* We have tried hard enough, and just can't receive the
8663 packet/notification. Give up. */
8664 printf_unfiltered (_("Ignoring packet error, continuing...\n"));
8666 /* Skip the ack char if we're in no-ack mode. */
8667 if (!rs
->noack_mode
)
8668 remote_serial_write ("+", 1);
8672 /* If we got an ordinary packet, return that to our caller. */
8677 struct cleanup
*old_chain
;
8680 str
= escape_buffer (*buf
, val
);
8681 old_chain
= make_cleanup (xfree
, str
);
8682 fprintf_unfiltered (gdb_stdlog
, "Packet received: %s\n", str
);
8683 do_cleanups (old_chain
);
8686 /* Skip the ack char if we're in no-ack mode. */
8687 if (!rs
->noack_mode
)
8688 remote_serial_write ("+", 1);
8689 if (is_notif
!= NULL
)
8694 /* If we got a notification, handle it, and go back to looking
8698 gdb_assert (c
== '%');
8702 struct cleanup
*old_chain
;
8705 str
= escape_buffer (*buf
, val
);
8706 old_chain
= make_cleanup (xfree
, str
);
8707 fprintf_unfiltered (gdb_stdlog
,
8708 " Notification received: %s\n",
8710 do_cleanups (old_chain
);
8712 if (is_notif
!= NULL
)
8715 handle_notification (rs
->notif_state
, *buf
);
8717 /* Notifications require no acknowledgement. */
8719 if (expecting_notif
)
8726 getpkt_sane (char **buf
, long *sizeof_buf
, int forever
)
8728 return getpkt_or_notif_sane_1 (buf
, sizeof_buf
, forever
, 0, NULL
);
8732 getpkt_or_notif_sane (char **buf
, long *sizeof_buf
, int forever
,
8735 return getpkt_or_notif_sane_1 (buf
, sizeof_buf
, forever
, 1,
8739 /* Check whether EVENT is a fork event for the process specified
8740 by the pid passed in DATA, and if it is, kill the fork child. */
8743 kill_child_of_pending_fork (QUEUE (stop_reply_p
) *q
,
8744 QUEUE_ITER (stop_reply_p
) *iter
,
8748 struct queue_iter_param
*param
= (struct queue_iter_param
*) data
;
8749 int parent_pid
= *(int *) param
->input
;
8751 if (is_pending_fork_parent (&event
->ws
, parent_pid
, event
->ptid
))
8753 struct remote_state
*rs
= get_remote_state ();
8754 int child_pid
= ptid_get_pid (event
->ws
.value
.related_pid
);
8757 res
= remote_vkill (child_pid
, rs
);
8759 error (_("Can't kill fork child process %d"), child_pid
);
8765 /* Kill any new fork children of process PID that haven't been
8766 processed by follow_fork. */
8769 kill_new_fork_children (int pid
, struct remote_state
*rs
)
8771 struct thread_info
*thread
;
8772 struct notif_client
*notif
= ¬if_client_stop
;
8773 struct queue_iter_param param
;
8775 /* Kill the fork child threads of any threads in process PID
8776 that are stopped at a fork event. */
8777 ALL_NON_EXITED_THREADS (thread
)
8779 struct target_waitstatus
*ws
= &thread
->pending_follow
;
8781 if (is_pending_fork_parent (ws
, pid
, thread
->ptid
))
8783 struct remote_state
*rs
= get_remote_state ();
8784 int child_pid
= ptid_get_pid (ws
->value
.related_pid
);
8787 res
= remote_vkill (child_pid
, rs
);
8789 error (_("Can't kill fork child process %d"), child_pid
);
8793 /* Check for any pending fork events (not reported or processed yet)
8794 in process PID and kill those fork child threads as well. */
8795 remote_notif_get_pending_events (notif
);
8797 param
.output
= NULL
;
8798 QUEUE_iterate (stop_reply_p
, stop_reply_queue
,
8799 kill_child_of_pending_fork
, ¶m
);
8804 remote_kill (struct target_ops
*ops
)
8807 /* Catch errors so the user can quit from gdb even when we
8808 aren't on speaking terms with the remote system. */
8813 CATCH (ex
, RETURN_MASK_ERROR
)
8815 if (ex
.error
== TARGET_CLOSE_ERROR
)
8817 /* If we got an (EOF) error that caused the target
8818 to go away, then we're done, that's what we wanted.
8819 "k" is susceptible to cause a premature EOF, given
8820 that the remote server isn't actually required to
8821 reply to "k", and it can happen that it doesn't
8822 even get to reply ACK to the "k". */
8826 /* Otherwise, something went wrong. We didn't actually kill
8827 the target. Just propagate the exception, and let the
8828 user or higher layers decide what to do. */
8829 throw_exception (ex
);
8833 /* We've killed the remote end, we get to mourn it. Since this is
8834 target remote, single-process, mourning the inferior also
8835 unpushes remote_ops. */
8836 target_mourn_inferior ();
8840 remote_vkill (int pid
, struct remote_state
*rs
)
8842 if (packet_support (PACKET_vKill
) == PACKET_DISABLE
)
8845 /* Tell the remote target to detach. */
8846 xsnprintf (rs
->buf
, get_remote_packet_size (), "vKill;%x", pid
);
8848 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8850 switch (packet_ok (rs
->buf
,
8851 &remote_protocol_packets
[PACKET_vKill
]))
8857 case PACKET_UNKNOWN
:
8860 internal_error (__FILE__
, __LINE__
, _("Bad result from packet_ok"));
8865 extended_remote_kill (struct target_ops
*ops
)
8868 int pid
= ptid_get_pid (inferior_ptid
);
8869 struct remote_state
*rs
= get_remote_state ();
8871 /* If we're stopped while forking and we haven't followed yet, kill the
8872 child task. We need to do this before killing the parent task
8873 because if this is a vfork then the parent will be sleeping. */
8874 kill_new_fork_children (pid
, rs
);
8876 res
= remote_vkill (pid
, rs
);
8877 if (res
== -1 && !(rs
->extended
&& remote_multi_process_p (rs
)))
8879 /* Don't try 'k' on a multi-process aware stub -- it has no way
8880 to specify the pid. */
8884 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8885 if (rs
->buf
[0] != 'O' || rs
->buf
[0] != 'K')
8888 /* Don't wait for it to die. I'm not really sure it matters whether
8889 we do or not. For the existing stubs, kill is a noop. */
8895 error (_("Can't kill process"));
8897 target_mourn_inferior ();
8901 remote_mourn (struct target_ops
*target
)
8903 unpush_target (target
);
8905 /* remote_close takes care of doing most of the clean up. */
8906 generic_mourn_inferior ();
8910 extended_remote_mourn (struct target_ops
*target
)
8912 struct remote_state
*rs
= get_remote_state ();
8914 /* In case we got here due to an error, but we're going to stay
8916 rs
->waiting_for_stop_reply
= 0;
8918 /* If the current general thread belonged to the process we just
8919 detached from or has exited, the remote side current general
8920 thread becomes undefined. Considering a case like this:
8922 - We just got here due to a detach.
8923 - The process that we're detaching from happens to immediately
8924 report a global breakpoint being hit in non-stop mode, in the
8925 same thread we had selected before.
8926 - GDB attaches to this process again.
8927 - This event happens to be the next event we handle.
8929 GDB would consider that the current general thread didn't need to
8930 be set on the stub side (with Hg), since for all it knew,
8931 GENERAL_THREAD hadn't changed.
8933 Notice that although in all-stop mode, the remote server always
8934 sets the current thread to the thread reporting the stop event,
8935 that doesn't happen in non-stop mode; in non-stop, the stub *must
8936 not* change the current thread when reporting a breakpoint hit,
8937 due to the decoupling of event reporting and event handling.
8939 To keep things simple, we always invalidate our notion of the
8941 record_currthread (rs
, minus_one_ptid
);
8943 /* Unlike "target remote", we do not want to unpush the target; then
8944 the next time the user says "run", we won't be connected. */
8946 /* Call common code to mark the inferior as not running. */
8947 generic_mourn_inferior ();
8949 if (!have_inferiors ())
8951 if (!remote_multi_process_p (rs
))
8953 /* Check whether the target is running now - some remote stubs
8954 automatically restart after kill. */
8956 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8958 if (rs
->buf
[0] == 'S' || rs
->buf
[0] == 'T')
8960 /* Assume that the target has been restarted. Set
8961 inferior_ptid so that bits of core GDB realizes
8962 there's something here, e.g., so that the user can
8963 say "kill" again. */
8964 inferior_ptid
= magic_null_ptid
;
8971 extended_remote_supports_disable_randomization (struct target_ops
*self
)
8973 return packet_support (PACKET_QDisableRandomization
) == PACKET_ENABLE
;
8977 extended_remote_disable_randomization (int val
)
8979 struct remote_state
*rs
= get_remote_state ();
8982 xsnprintf (rs
->buf
, get_remote_packet_size (), "QDisableRandomization:%x",
8985 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
8987 error (_("Target does not support QDisableRandomization."));
8988 if (strcmp (reply
, "OK") != 0)
8989 error (_("Bogus QDisableRandomization reply from target: %s"), reply
);
8993 extended_remote_run (char *args
)
8995 struct remote_state
*rs
= get_remote_state ();
8997 const char *remote_exec_file
= get_remote_exec_file ();
8999 /* If the user has disabled vRun support, or we have detected that
9000 support is not available, do not try it. */
9001 if (packet_support (PACKET_vRun
) == PACKET_DISABLE
)
9004 strcpy (rs
->buf
, "vRun;");
9005 len
= strlen (rs
->buf
);
9007 if (strlen (remote_exec_file
) * 2 + len
>= get_remote_packet_size ())
9008 error (_("Remote file name too long for run packet"));
9009 len
+= 2 * bin2hex ((gdb_byte
*) remote_exec_file
, rs
->buf
+ len
,
9010 strlen (remote_exec_file
));
9012 gdb_assert (args
!= NULL
);
9015 struct cleanup
*back_to
;
9019 argv
= gdb_buildargv (args
);
9020 back_to
= make_cleanup_freeargv (argv
);
9021 for (i
= 0; argv
[i
] != NULL
; i
++)
9023 if (strlen (argv
[i
]) * 2 + 1 + len
>= get_remote_packet_size ())
9024 error (_("Argument list too long for run packet"));
9025 rs
->buf
[len
++] = ';';
9026 len
+= 2 * bin2hex ((gdb_byte
*) argv
[i
], rs
->buf
+ len
,
9029 do_cleanups (back_to
);
9032 rs
->buf
[len
++] = '\0';
9035 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9037 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_vRun
]))
9040 /* We have a wait response. All is well. */
9042 case PACKET_UNKNOWN
:
9045 if (remote_exec_file
[0] == '\0')
9046 error (_("Running the default executable on the remote target failed; "
9047 "try \"set remote exec-file\"?"));
9049 error (_("Running \"%s\" on the remote target failed"),
9052 gdb_assert_not_reached (_("bad switch"));
9056 /* In the extended protocol we want to be able to do things like
9057 "run" and have them basically work as expected. So we need
9058 a special create_inferior function. We support changing the
9059 executable file and the command line arguments, but not the
9063 extended_remote_create_inferior (struct target_ops
*ops
,
9064 char *exec_file
, char *args
,
9065 char **env
, int from_tty
)
9069 struct remote_state
*rs
= get_remote_state ();
9070 const char *remote_exec_file
= get_remote_exec_file ();
9072 /* If running asynchronously, register the target file descriptor
9073 with the event loop. */
9074 if (target_can_async_p ())
9077 /* Disable address space randomization if requested (and supported). */
9078 if (extended_remote_supports_disable_randomization (ops
))
9079 extended_remote_disable_randomization (disable_randomization
);
9081 /* Now restart the remote server. */
9082 run_worked
= extended_remote_run (args
) != -1;
9085 /* vRun was not supported. Fail if we need it to do what the
9087 if (remote_exec_file
[0])
9088 error (_("Remote target does not support \"set remote exec-file\""));
9090 error (_("Remote target does not support \"set args\" or run <ARGS>"));
9092 /* Fall back to "R". */
9093 extended_remote_restart ();
9096 if (!have_inferiors ())
9098 /* Clean up from the last time we ran, before we mark the target
9099 running again. This will mark breakpoints uninserted, and
9100 get_offsets may insert breakpoints. */
9101 init_thread_list ();
9102 init_wait_for_inferior ();
9105 /* vRun's success return is a stop reply. */
9106 stop_reply
= run_worked
? rs
->buf
: NULL
;
9107 add_current_inferior_and_thread (stop_reply
);
9109 /* Get updated offsets, if the stub uses qOffsets. */
9114 /* Given a location's target info BP_TGT and the packet buffer BUF, output
9115 the list of conditions (in agent expression bytecode format), if any, the
9116 target needs to evaluate. The output is placed into the packet buffer
9117 started from BUF and ended at BUF_END. */
9120 remote_add_target_side_condition (struct gdbarch
*gdbarch
,
9121 struct bp_target_info
*bp_tgt
, char *buf
,
9124 struct agent_expr
*aexpr
= NULL
;
9127 char *buf_start
= buf
;
9129 if (VEC_empty (agent_expr_p
, bp_tgt
->conditions
))
9132 buf
+= strlen (buf
);
9133 xsnprintf (buf
, buf_end
- buf
, "%s", ";");
9136 /* Send conditions to the target and free the vector. */
9138 VEC_iterate (agent_expr_p
, bp_tgt
->conditions
, ix
, aexpr
);
9141 xsnprintf (buf
, buf_end
- buf
, "X%x,", aexpr
->len
);
9142 buf
+= strlen (buf
);
9143 for (i
= 0; i
< aexpr
->len
; ++i
)
9144 buf
= pack_hex_byte (buf
, aexpr
->buf
[i
]);
9151 remote_add_target_side_commands (struct gdbarch
*gdbarch
,
9152 struct bp_target_info
*bp_tgt
, char *buf
)
9154 struct agent_expr
*aexpr
= NULL
;
9157 if (VEC_empty (agent_expr_p
, bp_tgt
->tcommands
))
9160 buf
+= strlen (buf
);
9162 sprintf (buf
, ";cmds:%x,", bp_tgt
->persist
);
9163 buf
+= strlen (buf
);
9165 /* Concatenate all the agent expressions that are commands into the
9168 VEC_iterate (agent_expr_p
, bp_tgt
->tcommands
, ix
, aexpr
);
9171 sprintf (buf
, "X%x,", aexpr
->len
);
9172 buf
+= strlen (buf
);
9173 for (i
= 0; i
< aexpr
->len
; ++i
)
9174 buf
= pack_hex_byte (buf
, aexpr
->buf
[i
]);
9179 /* Insert a breakpoint. On targets that have software breakpoint
9180 support, we ask the remote target to do the work; on targets
9181 which don't, we insert a traditional memory breakpoint. */
9184 remote_insert_breakpoint (struct target_ops
*ops
,
9185 struct gdbarch
*gdbarch
,
9186 struct bp_target_info
*bp_tgt
)
9188 /* Try the "Z" s/w breakpoint packet if it is not already disabled.
9189 If it succeeds, then set the support to PACKET_ENABLE. If it
9190 fails, and the user has explicitly requested the Z support then
9191 report an error, otherwise, mark it disabled and go on. */
9193 if (packet_support (PACKET_Z0
) != PACKET_DISABLE
)
9195 CORE_ADDR addr
= bp_tgt
->reqstd_address
;
9196 struct remote_state
*rs
;
9199 struct condition_list
*cond
= NULL
;
9201 /* Make sure the remote is pointing at the right process, if
9203 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
9204 set_general_process ();
9206 gdbarch_remote_breakpoint_from_pc (gdbarch
, &addr
, &bpsize
);
9208 rs
= get_remote_state ();
9210 endbuf
= rs
->buf
+ get_remote_packet_size ();
9215 addr
= (ULONGEST
) remote_address_masked (addr
);
9216 p
+= hexnumstr (p
, addr
);
9217 xsnprintf (p
, endbuf
- p
, ",%d", bpsize
);
9219 if (remote_supports_cond_breakpoints (ops
))
9220 remote_add_target_side_condition (gdbarch
, bp_tgt
, p
, endbuf
);
9222 if (remote_can_run_breakpoint_commands (ops
))
9223 remote_add_target_side_commands (gdbarch
, bp_tgt
, p
);
9226 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9228 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
]))
9233 bp_tgt
->placed_address
= addr
;
9234 bp_tgt
->placed_size
= bpsize
;
9236 case PACKET_UNKNOWN
:
9241 /* If this breakpoint has target-side commands but this stub doesn't
9242 support Z0 packets, throw error. */
9243 if (!VEC_empty (agent_expr_p
, bp_tgt
->tcommands
))
9244 throw_error (NOT_SUPPORTED_ERROR
, _("\
9245 Target doesn't support breakpoints that have target side commands."));
9247 return memory_insert_breakpoint (ops
, gdbarch
, bp_tgt
);
9251 remote_remove_breakpoint (struct target_ops
*ops
,
9252 struct gdbarch
*gdbarch
,
9253 struct bp_target_info
*bp_tgt
)
9255 CORE_ADDR addr
= bp_tgt
->placed_address
;
9256 struct remote_state
*rs
= get_remote_state ();
9258 if (packet_support (PACKET_Z0
) != PACKET_DISABLE
)
9261 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
9263 /* Make sure the remote is pointing at the right process, if
9265 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
9266 set_general_process ();
9272 addr
= (ULONGEST
) remote_address_masked (bp_tgt
->placed_address
);
9273 p
+= hexnumstr (p
, addr
);
9274 xsnprintf (p
, endbuf
- p
, ",%d", bp_tgt
->placed_size
);
9277 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9279 return (rs
->buf
[0] == 'E');
9282 return memory_remove_breakpoint (ops
, gdbarch
, bp_tgt
);
9285 static enum Z_packet_type
9286 watchpoint_to_Z_packet (int type
)
9291 return Z_PACKET_WRITE_WP
;
9294 return Z_PACKET_READ_WP
;
9297 return Z_PACKET_ACCESS_WP
;
9300 internal_error (__FILE__
, __LINE__
,
9301 _("hw_bp_to_z: bad watchpoint type %d"), type
);
9306 remote_insert_watchpoint (struct target_ops
*self
, CORE_ADDR addr
, int len
,
9307 enum target_hw_bp_type type
, struct expression
*cond
)
9309 struct remote_state
*rs
= get_remote_state ();
9310 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
9312 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
9314 if (packet_support (PACKET_Z0
+ packet
) == PACKET_DISABLE
)
9317 /* Make sure the remote is pointing at the right process, if
9319 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
9320 set_general_process ();
9322 xsnprintf (rs
->buf
, endbuf
- rs
->buf
, "Z%x,", packet
);
9323 p
= strchr (rs
->buf
, '\0');
9324 addr
= remote_address_masked (addr
);
9325 p
+= hexnumstr (p
, (ULONGEST
) addr
);
9326 xsnprintf (p
, endbuf
- p
, ",%x", len
);
9329 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9331 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
+ packet
]))
9335 case PACKET_UNKNOWN
:
9340 internal_error (__FILE__
, __LINE__
,
9341 _("remote_insert_watchpoint: reached end of function"));
9345 remote_watchpoint_addr_within_range (struct target_ops
*target
, CORE_ADDR addr
,
9346 CORE_ADDR start
, int length
)
9348 CORE_ADDR diff
= remote_address_masked (addr
- start
);
9350 return diff
< length
;
9355 remote_remove_watchpoint (struct target_ops
*self
, CORE_ADDR addr
, int len
,
9356 enum target_hw_bp_type type
, struct expression
*cond
)
9358 struct remote_state
*rs
= get_remote_state ();
9359 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
9361 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
9363 if (packet_support (PACKET_Z0
+ packet
) == PACKET_DISABLE
)
9366 /* Make sure the remote is pointing at the right process, if
9368 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
9369 set_general_process ();
9371 xsnprintf (rs
->buf
, endbuf
- rs
->buf
, "z%x,", packet
);
9372 p
= strchr (rs
->buf
, '\0');
9373 addr
= remote_address_masked (addr
);
9374 p
+= hexnumstr (p
, (ULONGEST
) addr
);
9375 xsnprintf (p
, endbuf
- p
, ",%x", len
);
9377 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9379 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
+ packet
]))
9382 case PACKET_UNKNOWN
:
9387 internal_error (__FILE__
, __LINE__
,
9388 _("remote_remove_watchpoint: reached end of function"));
9392 int remote_hw_watchpoint_limit
= -1;
9393 int remote_hw_watchpoint_length_limit
= -1;
9394 int remote_hw_breakpoint_limit
= -1;
9397 remote_region_ok_for_hw_watchpoint (struct target_ops
*self
,
9398 CORE_ADDR addr
, int len
)
9400 if (remote_hw_watchpoint_length_limit
== 0)
9402 else if (remote_hw_watchpoint_length_limit
< 0)
9404 else if (len
<= remote_hw_watchpoint_length_limit
)
9411 remote_check_watch_resources (struct target_ops
*self
,
9412 enum bptype type
, int cnt
, int ot
)
9414 if (type
== bp_hardware_breakpoint
)
9416 if (remote_hw_breakpoint_limit
== 0)
9418 else if (remote_hw_breakpoint_limit
< 0)
9420 else if (cnt
<= remote_hw_breakpoint_limit
)
9425 if (remote_hw_watchpoint_limit
== 0)
9427 else if (remote_hw_watchpoint_limit
< 0)
9431 else if (cnt
<= remote_hw_watchpoint_limit
)
9437 /* The to_stopped_by_sw_breakpoint method of target remote. */
9440 remote_stopped_by_sw_breakpoint (struct target_ops
*ops
)
9442 struct thread_info
*thread
= inferior_thread ();
9444 return (thread
->priv
!= NULL
9445 && thread
->priv
->stop_reason
== TARGET_STOPPED_BY_SW_BREAKPOINT
);
9448 /* The to_supports_stopped_by_sw_breakpoint method of target
9452 remote_supports_stopped_by_sw_breakpoint (struct target_ops
*ops
)
9454 struct remote_state
*rs
= get_remote_state ();
9456 return (packet_support (PACKET_swbreak_feature
) == PACKET_ENABLE
);
9459 /* The to_stopped_by_hw_breakpoint method of target remote. */
9462 remote_stopped_by_hw_breakpoint (struct target_ops
*ops
)
9464 struct thread_info
*thread
= inferior_thread ();
9466 return (thread
->priv
!= NULL
9467 && thread
->priv
->stop_reason
== TARGET_STOPPED_BY_HW_BREAKPOINT
);
9470 /* The to_supports_stopped_by_hw_breakpoint method of target
9474 remote_supports_stopped_by_hw_breakpoint (struct target_ops
*ops
)
9476 struct remote_state
*rs
= get_remote_state ();
9478 return (packet_support (PACKET_hwbreak_feature
) == PACKET_ENABLE
);
9482 remote_stopped_by_watchpoint (struct target_ops
*ops
)
9484 struct thread_info
*thread
= inferior_thread ();
9486 return (thread
->priv
!= NULL
9487 && thread
->priv
->stop_reason
== TARGET_STOPPED_BY_WATCHPOINT
);
9491 remote_stopped_data_address (struct target_ops
*target
, CORE_ADDR
*addr_p
)
9493 struct thread_info
*thread
= inferior_thread ();
9495 if (thread
->priv
!= NULL
9496 && thread
->priv
->stop_reason
== TARGET_STOPPED_BY_WATCHPOINT
)
9498 *addr_p
= thread
->priv
->watch_data_address
;
9507 remote_insert_hw_breakpoint (struct target_ops
*self
, struct gdbarch
*gdbarch
,
9508 struct bp_target_info
*bp_tgt
)
9510 CORE_ADDR addr
= bp_tgt
->reqstd_address
;
9511 struct remote_state
*rs
;
9516 /* The length field should be set to the size of a breakpoint
9517 instruction, even though we aren't inserting one ourselves. */
9519 gdbarch_remote_breakpoint_from_pc (gdbarch
, &addr
, &bpsize
);
9521 if (packet_support (PACKET_Z1
) == PACKET_DISABLE
)
9524 /* Make sure the remote is pointing at the right process, if
9526 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
9527 set_general_process ();
9529 rs
= get_remote_state ();
9531 endbuf
= rs
->buf
+ get_remote_packet_size ();
9537 addr
= remote_address_masked (addr
);
9538 p
+= hexnumstr (p
, (ULONGEST
) addr
);
9539 xsnprintf (p
, endbuf
- p
, ",%x", bpsize
);
9541 if (remote_supports_cond_breakpoints (self
))
9542 remote_add_target_side_condition (gdbarch
, bp_tgt
, p
, endbuf
);
9544 if (remote_can_run_breakpoint_commands (self
))
9545 remote_add_target_side_commands (gdbarch
, bp_tgt
, p
);
9548 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9550 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z1
]))
9553 if (rs
->buf
[1] == '.')
9555 message
= strchr (rs
->buf
+ 2, '.');
9557 error (_("Remote failure reply: %s"), message
+ 1);
9560 case PACKET_UNKNOWN
:
9563 bp_tgt
->placed_address
= addr
;
9564 bp_tgt
->placed_size
= bpsize
;
9567 internal_error (__FILE__
, __LINE__
,
9568 _("remote_insert_hw_breakpoint: reached end of function"));
9573 remote_remove_hw_breakpoint (struct target_ops
*self
, struct gdbarch
*gdbarch
,
9574 struct bp_target_info
*bp_tgt
)
9577 struct remote_state
*rs
= get_remote_state ();
9579 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
9581 if (packet_support (PACKET_Z1
) == PACKET_DISABLE
)
9584 /* Make sure the remote is pointing at the right process, if
9586 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
9587 set_general_process ();
9593 addr
= remote_address_masked (bp_tgt
->placed_address
);
9594 p
+= hexnumstr (p
, (ULONGEST
) addr
);
9595 xsnprintf (p
, endbuf
- p
, ",%x", bp_tgt
->placed_size
);
9598 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9600 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z1
]))
9603 case PACKET_UNKNOWN
:
9608 internal_error (__FILE__
, __LINE__
,
9609 _("remote_remove_hw_breakpoint: reached end of function"));
9612 /* Verify memory using the "qCRC:" request. */
9615 remote_verify_memory (struct target_ops
*ops
,
9616 const gdb_byte
*data
, CORE_ADDR lma
, ULONGEST size
)
9618 struct remote_state
*rs
= get_remote_state ();
9619 unsigned long host_crc
, target_crc
;
9622 /* It doesn't make sense to use qCRC if the remote target is
9623 connected but not running. */
9624 if (target_has_execution
&& packet_support (PACKET_qCRC
) != PACKET_DISABLE
)
9626 enum packet_result result
;
9628 /* Make sure the remote is pointing at the right process. */
9629 set_general_process ();
9631 /* FIXME: assumes lma can fit into long. */
9632 xsnprintf (rs
->buf
, get_remote_packet_size (), "qCRC:%lx,%lx",
9633 (long) lma
, (long) size
);
9636 /* Be clever; compute the host_crc before waiting for target
9638 host_crc
= xcrc32 (data
, size
, 0xffffffff);
9640 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9642 result
= packet_ok (rs
->buf
,
9643 &remote_protocol_packets
[PACKET_qCRC
]);
9644 if (result
== PACKET_ERROR
)
9646 else if (result
== PACKET_OK
)
9648 for (target_crc
= 0, tmp
= &rs
->buf
[1]; *tmp
; tmp
++)
9649 target_crc
= target_crc
* 16 + fromhex (*tmp
);
9651 return (host_crc
== target_crc
);
9655 return simple_verify_memory (ops
, data
, lma
, size
);
9658 /* compare-sections command
9660 With no arguments, compares each loadable section in the exec bfd
9661 with the same memory range on the target, and reports mismatches.
9662 Useful for verifying the image on the target against the exec file. */
9665 compare_sections_command (char *args
, int from_tty
)
9668 struct cleanup
*old_chain
;
9670 const char *sectname
;
9679 error (_("command cannot be used without an exec file"));
9681 /* Make sure the remote is pointing at the right process. */
9682 set_general_process ();
9684 if (args
!= NULL
&& strcmp (args
, "-r") == 0)
9690 for (s
= exec_bfd
->sections
; s
; s
= s
->next
)
9692 if (!(s
->flags
& SEC_LOAD
))
9693 continue; /* Skip non-loadable section. */
9695 if (read_only
&& (s
->flags
& SEC_READONLY
) == 0)
9696 continue; /* Skip writeable sections */
9698 size
= bfd_get_section_size (s
);
9700 continue; /* Skip zero-length section. */
9702 sectname
= bfd_get_section_name (exec_bfd
, s
);
9703 if (args
&& strcmp (args
, sectname
) != 0)
9704 continue; /* Not the section selected by user. */
9706 matched
= 1; /* Do this section. */
9709 sectdata
= (gdb_byte
*) xmalloc (size
);
9710 old_chain
= make_cleanup (xfree
, sectdata
);
9711 bfd_get_section_contents (exec_bfd
, s
, sectdata
, 0, size
);
9713 res
= target_verify_memory (sectdata
, lma
, size
);
9716 error (_("target memory fault, section %s, range %s -- %s"), sectname
,
9717 paddress (target_gdbarch (), lma
),
9718 paddress (target_gdbarch (), lma
+ size
));
9720 printf_filtered ("Section %s, range %s -- %s: ", sectname
,
9721 paddress (target_gdbarch (), lma
),
9722 paddress (target_gdbarch (), lma
+ size
));
9724 printf_filtered ("matched.\n");
9727 printf_filtered ("MIS-MATCHED!\n");
9731 do_cleanups (old_chain
);
9734 warning (_("One or more sections of the target image does not match\n\
9735 the loaded file\n"));
9736 if (args
&& !matched
)
9737 printf_filtered (_("No loaded section named '%s'.\n"), args
);
9740 /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET
9741 into remote target. The number of bytes written to the remote
9742 target is returned, or -1 for error. */
9744 static enum target_xfer_status
9745 remote_write_qxfer (struct target_ops
*ops
, const char *object_name
,
9746 const char *annex
, const gdb_byte
*writebuf
,
9747 ULONGEST offset
, LONGEST len
, ULONGEST
*xfered_len
,
9748 struct packet_config
*packet
)
9752 struct remote_state
*rs
= get_remote_state ();
9753 int max_size
= get_memory_write_packet_size ();
9755 if (packet
->support
== PACKET_DISABLE
)
9756 return TARGET_XFER_E_IO
;
9758 /* Insert header. */
9759 i
= snprintf (rs
->buf
, max_size
,
9760 "qXfer:%s:write:%s:%s:",
9761 object_name
, annex
? annex
: "",
9762 phex_nz (offset
, sizeof offset
));
9763 max_size
-= (i
+ 1);
9765 /* Escape as much data as fits into rs->buf. */
9766 buf_len
= remote_escape_output
9767 (writebuf
, len
, 1, (gdb_byte
*) rs
->buf
+ i
, &max_size
, max_size
);
9769 if (putpkt_binary (rs
->buf
, i
+ buf_len
) < 0
9770 || getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) < 0
9771 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
9772 return TARGET_XFER_E_IO
;
9774 unpack_varlen_hex (rs
->buf
, &n
);
9777 return TARGET_XFER_OK
;
9780 /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet.
9781 Data at OFFSET, of up to LEN bytes, is read into READBUF; the
9782 number of bytes read is returned, or 0 for EOF, or -1 for error.
9783 The number of bytes read may be less than LEN without indicating an
9784 EOF. PACKET is checked and updated to indicate whether the remote
9785 target supports this object. */
9787 static enum target_xfer_status
9788 remote_read_qxfer (struct target_ops
*ops
, const char *object_name
,
9790 gdb_byte
*readbuf
, ULONGEST offset
, LONGEST len
,
9791 ULONGEST
*xfered_len
,
9792 struct packet_config
*packet
)
9794 struct remote_state
*rs
= get_remote_state ();
9795 LONGEST i
, n
, packet_len
;
9797 if (packet
->support
== PACKET_DISABLE
)
9798 return TARGET_XFER_E_IO
;
9800 /* Check whether we've cached an end-of-object packet that matches
9802 if (rs
->finished_object
)
9804 if (strcmp (object_name
, rs
->finished_object
) == 0
9805 && strcmp (annex
? annex
: "", rs
->finished_annex
) == 0
9806 && offset
== rs
->finished_offset
)
9807 return TARGET_XFER_EOF
;
9810 /* Otherwise, we're now reading something different. Discard
9812 xfree (rs
->finished_object
);
9813 xfree (rs
->finished_annex
);
9814 rs
->finished_object
= NULL
;
9815 rs
->finished_annex
= NULL
;
9818 /* Request only enough to fit in a single packet. The actual data
9819 may not, since we don't know how much of it will need to be escaped;
9820 the target is free to respond with slightly less data. We subtract
9821 five to account for the response type and the protocol frame. */
9822 n
= min (get_remote_packet_size () - 5, len
);
9823 snprintf (rs
->buf
, get_remote_packet_size () - 4, "qXfer:%s:read:%s:%s,%s",
9824 object_name
, annex
? annex
: "",
9825 phex_nz (offset
, sizeof offset
),
9826 phex_nz (n
, sizeof n
));
9827 i
= putpkt (rs
->buf
);
9829 return TARGET_XFER_E_IO
;
9832 packet_len
= getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0);
9833 if (packet_len
< 0 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
9834 return TARGET_XFER_E_IO
;
9836 if (rs
->buf
[0] != 'l' && rs
->buf
[0] != 'm')
9837 error (_("Unknown remote qXfer reply: %s"), rs
->buf
);
9839 /* 'm' means there is (or at least might be) more data after this
9840 batch. That does not make sense unless there's at least one byte
9841 of data in this reply. */
9842 if (rs
->buf
[0] == 'm' && packet_len
== 1)
9843 error (_("Remote qXfer reply contained no data."));
9845 /* Got some data. */
9846 i
= remote_unescape_input ((gdb_byte
*) rs
->buf
+ 1,
9847 packet_len
- 1, readbuf
, n
);
9849 /* 'l' is an EOF marker, possibly including a final block of data,
9850 or possibly empty. If we have the final block of a non-empty
9851 object, record this fact to bypass a subsequent partial read. */
9852 if (rs
->buf
[0] == 'l' && offset
+ i
> 0)
9854 rs
->finished_object
= xstrdup (object_name
);
9855 rs
->finished_annex
= xstrdup (annex
? annex
: "");
9856 rs
->finished_offset
= offset
+ i
;
9860 return TARGET_XFER_EOF
;
9864 return TARGET_XFER_OK
;
9868 static enum target_xfer_status
9869 remote_xfer_partial (struct target_ops
*ops
, enum target_object object
,
9870 const char *annex
, gdb_byte
*readbuf
,
9871 const gdb_byte
*writebuf
, ULONGEST offset
, ULONGEST len
,
9872 ULONGEST
*xfered_len
)
9874 struct remote_state
*rs
;
9878 int unit_size
= gdbarch_addressable_memory_unit_size (target_gdbarch ());
9880 set_remote_traceframe ();
9881 set_general_thread (inferior_ptid
);
9883 rs
= get_remote_state ();
9885 /* Handle memory using the standard memory routines. */
9886 if (object
== TARGET_OBJECT_MEMORY
)
9888 /* If the remote target is connected but not running, we should
9889 pass this request down to a lower stratum (e.g. the executable
9891 if (!target_has_execution
)
9892 return TARGET_XFER_EOF
;
9894 if (writebuf
!= NULL
)
9895 return remote_write_bytes (offset
, writebuf
, len
, unit_size
,
9898 return remote_read_bytes (ops
, offset
, readbuf
, len
, unit_size
,
9902 /* Handle SPU memory using qxfer packets. */
9903 if (object
== TARGET_OBJECT_SPU
)
9906 return remote_read_qxfer (ops
, "spu", annex
, readbuf
, offset
, len
,
9907 xfered_len
, &remote_protocol_packets
9908 [PACKET_qXfer_spu_read
]);
9910 return remote_write_qxfer (ops
, "spu", annex
, writebuf
, offset
, len
,
9911 xfered_len
, &remote_protocol_packets
9912 [PACKET_qXfer_spu_write
]);
9915 /* Handle extra signal info using qxfer packets. */
9916 if (object
== TARGET_OBJECT_SIGNAL_INFO
)
9919 return remote_read_qxfer (ops
, "siginfo", annex
, readbuf
, offset
, len
,
9920 xfered_len
, &remote_protocol_packets
9921 [PACKET_qXfer_siginfo_read
]);
9923 return remote_write_qxfer (ops
, "siginfo", annex
,
9924 writebuf
, offset
, len
, xfered_len
,
9925 &remote_protocol_packets
9926 [PACKET_qXfer_siginfo_write
]);
9929 if (object
== TARGET_OBJECT_STATIC_TRACE_DATA
)
9932 return remote_read_qxfer (ops
, "statictrace", annex
,
9933 readbuf
, offset
, len
, xfered_len
,
9934 &remote_protocol_packets
9935 [PACKET_qXfer_statictrace_read
]);
9937 return TARGET_XFER_E_IO
;
9940 /* Only handle flash writes. */
9941 if (writebuf
!= NULL
)
9947 case TARGET_OBJECT_FLASH
:
9948 return remote_flash_write (ops
, offset
, len
, xfered_len
,
9952 return TARGET_XFER_E_IO
;
9956 /* Map pre-existing objects onto letters. DO NOT do this for new
9957 objects!!! Instead specify new query packets. */
9960 case TARGET_OBJECT_AVR
:
9964 case TARGET_OBJECT_AUXV
:
9965 gdb_assert (annex
== NULL
);
9966 return remote_read_qxfer (ops
, "auxv", annex
, readbuf
, offset
, len
,
9968 &remote_protocol_packets
[PACKET_qXfer_auxv
]);
9970 case TARGET_OBJECT_AVAILABLE_FEATURES
:
9971 return remote_read_qxfer
9972 (ops
, "features", annex
, readbuf
, offset
, len
, xfered_len
,
9973 &remote_protocol_packets
[PACKET_qXfer_features
]);
9975 case TARGET_OBJECT_LIBRARIES
:
9976 return remote_read_qxfer
9977 (ops
, "libraries", annex
, readbuf
, offset
, len
, xfered_len
,
9978 &remote_protocol_packets
[PACKET_qXfer_libraries
]);
9980 case TARGET_OBJECT_LIBRARIES_SVR4
:
9981 return remote_read_qxfer
9982 (ops
, "libraries-svr4", annex
, readbuf
, offset
, len
, xfered_len
,
9983 &remote_protocol_packets
[PACKET_qXfer_libraries_svr4
]);
9985 case TARGET_OBJECT_MEMORY_MAP
:
9986 gdb_assert (annex
== NULL
);
9987 return remote_read_qxfer (ops
, "memory-map", annex
, readbuf
, offset
, len
,
9989 &remote_protocol_packets
[PACKET_qXfer_memory_map
]);
9991 case TARGET_OBJECT_OSDATA
:
9992 /* Should only get here if we're connected. */
9993 gdb_assert (rs
->remote_desc
);
9994 return remote_read_qxfer
9995 (ops
, "osdata", annex
, readbuf
, offset
, len
, xfered_len
,
9996 &remote_protocol_packets
[PACKET_qXfer_osdata
]);
9998 case TARGET_OBJECT_THREADS
:
9999 gdb_assert (annex
== NULL
);
10000 return remote_read_qxfer (ops
, "threads", annex
, readbuf
, offset
, len
,
10002 &remote_protocol_packets
[PACKET_qXfer_threads
]);
10004 case TARGET_OBJECT_TRACEFRAME_INFO
:
10005 gdb_assert (annex
== NULL
);
10006 return remote_read_qxfer
10007 (ops
, "traceframe-info", annex
, readbuf
, offset
, len
, xfered_len
,
10008 &remote_protocol_packets
[PACKET_qXfer_traceframe_info
]);
10010 case TARGET_OBJECT_FDPIC
:
10011 return remote_read_qxfer (ops
, "fdpic", annex
, readbuf
, offset
, len
,
10013 &remote_protocol_packets
[PACKET_qXfer_fdpic
]);
10015 case TARGET_OBJECT_OPENVMS_UIB
:
10016 return remote_read_qxfer (ops
, "uib", annex
, readbuf
, offset
, len
,
10018 &remote_protocol_packets
[PACKET_qXfer_uib
]);
10020 case TARGET_OBJECT_BTRACE
:
10021 return remote_read_qxfer (ops
, "btrace", annex
, readbuf
, offset
, len
,
10023 &remote_protocol_packets
[PACKET_qXfer_btrace
]);
10025 case TARGET_OBJECT_BTRACE_CONF
:
10026 return remote_read_qxfer (ops
, "btrace-conf", annex
, readbuf
, offset
,
10028 &remote_protocol_packets
[PACKET_qXfer_btrace_conf
]);
10030 case TARGET_OBJECT_EXEC_FILE
:
10031 return remote_read_qxfer (ops
, "exec-file", annex
, readbuf
, offset
,
10033 &remote_protocol_packets
[PACKET_qXfer_exec_file
]);
10036 return TARGET_XFER_E_IO
;
10039 /* Minimum outbuf size is get_remote_packet_size (). If LEN is not
10040 large enough let the caller deal with it. */
10041 if (len
< get_remote_packet_size ())
10042 return TARGET_XFER_E_IO
;
10043 len
= get_remote_packet_size ();
10045 /* Except for querying the minimum buffer size, target must be open. */
10046 if (!rs
->remote_desc
)
10047 error (_("remote query is only available after target open"));
10049 gdb_assert (annex
!= NULL
);
10050 gdb_assert (readbuf
!= NULL
);
10054 *p2
++ = query_type
;
10056 /* We used one buffer char for the remote protocol q command and
10057 another for the query type. As the remote protocol encapsulation
10058 uses 4 chars plus one extra in case we are debugging
10059 (remote_debug), we have PBUFZIZ - 7 left to pack the query
10062 while (annex
[i
] && (i
< (get_remote_packet_size () - 8)))
10064 /* Bad caller may have sent forbidden characters. */
10065 gdb_assert (isprint (annex
[i
]) && annex
[i
] != '$' && annex
[i
] != '#');
10070 gdb_assert (annex
[i
] == '\0');
10072 i
= putpkt (rs
->buf
);
10074 return TARGET_XFER_E_IO
;
10076 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
10077 strcpy ((char *) readbuf
, rs
->buf
);
10079 *xfered_len
= strlen ((char *) readbuf
);
10080 return TARGET_XFER_OK
;
10084 remote_search_memory (struct target_ops
* ops
,
10085 CORE_ADDR start_addr
, ULONGEST search_space_len
,
10086 const gdb_byte
*pattern
, ULONGEST pattern_len
,
10087 CORE_ADDR
*found_addrp
)
10089 int addr_size
= gdbarch_addr_bit (target_gdbarch ()) / 8;
10090 struct remote_state
*rs
= get_remote_state ();
10091 int max_size
= get_memory_write_packet_size ();
10092 struct packet_config
*packet
=
10093 &remote_protocol_packets
[PACKET_qSearch_memory
];
10094 /* Number of packet bytes used to encode the pattern;
10095 this could be more than PATTERN_LEN due to escape characters. */
10096 int escaped_pattern_len
;
10097 /* Amount of pattern that was encodable in the packet. */
10098 int used_pattern_len
;
10101 ULONGEST found_addr
;
10103 /* Don't go to the target if we don't have to.
10104 This is done before checking packet->support to avoid the possibility that
10105 a success for this edge case means the facility works in general. */
10106 if (pattern_len
> search_space_len
)
10108 if (pattern_len
== 0)
10110 *found_addrp
= start_addr
;
10114 /* If we already know the packet isn't supported, fall back to the simple
10115 way of searching memory. */
10117 if (packet_config_support (packet
) == PACKET_DISABLE
)
10119 /* Target doesn't provided special support, fall back and use the
10120 standard support (copy memory and do the search here). */
10121 return simple_search_memory (ops
, start_addr
, search_space_len
,
10122 pattern
, pattern_len
, found_addrp
);
10125 /* Make sure the remote is pointing at the right process. */
10126 set_general_process ();
10128 /* Insert header. */
10129 i
= snprintf (rs
->buf
, max_size
,
10130 "qSearch:memory:%s;%s;",
10131 phex_nz (start_addr
, addr_size
),
10132 phex_nz (search_space_len
, sizeof (search_space_len
)));
10133 max_size
-= (i
+ 1);
10135 /* Escape as much data as fits into rs->buf. */
10136 escaped_pattern_len
=
10137 remote_escape_output (pattern
, pattern_len
, 1, (gdb_byte
*) rs
->buf
+ i
,
10138 &used_pattern_len
, max_size
);
10140 /* Bail if the pattern is too large. */
10141 if (used_pattern_len
!= pattern_len
)
10142 error (_("Pattern is too large to transmit to remote target."));
10144 if (putpkt_binary (rs
->buf
, i
+ escaped_pattern_len
) < 0
10145 || getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) < 0
10146 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
10148 /* The request may not have worked because the command is not
10149 supported. If so, fall back to the simple way. */
10150 if (packet
->support
== PACKET_DISABLE
)
10152 return simple_search_memory (ops
, start_addr
, search_space_len
,
10153 pattern
, pattern_len
, found_addrp
);
10158 if (rs
->buf
[0] == '0')
10160 else if (rs
->buf
[0] == '1')
10163 if (rs
->buf
[1] != ',')
10164 error (_("Unknown qSearch:memory reply: %s"), rs
->buf
);
10165 unpack_varlen_hex (rs
->buf
+ 2, &found_addr
);
10166 *found_addrp
= found_addr
;
10169 error (_("Unknown qSearch:memory reply: %s"), rs
->buf
);
10175 remote_rcmd (struct target_ops
*self
, const char *command
,
10176 struct ui_file
*outbuf
)
10178 struct remote_state
*rs
= get_remote_state ();
10181 if (!rs
->remote_desc
)
10182 error (_("remote rcmd is only available after target open"));
10184 /* Send a NULL command across as an empty command. */
10185 if (command
== NULL
)
10188 /* The query prefix. */
10189 strcpy (rs
->buf
, "qRcmd,");
10190 p
= strchr (rs
->buf
, '\0');
10192 if ((strlen (rs
->buf
) + strlen (command
) * 2 + 8/*misc*/)
10193 > get_remote_packet_size ())
10194 error (_("\"monitor\" command ``%s'' is too long."), command
);
10196 /* Encode the actual command. */
10197 bin2hex ((const gdb_byte
*) command
, p
, strlen (command
));
10199 if (putpkt (rs
->buf
) < 0)
10200 error (_("Communication problem with target."));
10202 /* get/display the response */
10207 /* XXX - see also remote_get_noisy_reply(). */
10208 QUIT
; /* Allow user to bail out with ^C. */
10210 if (getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) == -1)
10212 /* Timeout. Continue to (try to) read responses.
10213 This is better than stopping with an error, assuming the stub
10214 is still executing the (long) monitor command.
10215 If needed, the user can interrupt gdb using C-c, obtaining
10216 an effect similar to stop on timeout. */
10220 if (buf
[0] == '\0')
10221 error (_("Target does not support this command."));
10222 if (buf
[0] == 'O' && buf
[1] != 'K')
10224 remote_console_output (buf
+ 1); /* 'O' message from stub. */
10227 if (strcmp (buf
, "OK") == 0)
10229 if (strlen (buf
) == 3 && buf
[0] == 'E'
10230 && isdigit (buf
[1]) && isdigit (buf
[2]))
10232 error (_("Protocol error with Rcmd"));
10234 for (p
= buf
; p
[0] != '\0' && p
[1] != '\0'; p
+= 2)
10236 char c
= (fromhex (p
[0]) << 4) + fromhex (p
[1]);
10238 fputc_unfiltered (c
, outbuf
);
10244 static VEC(mem_region_s
) *
10245 remote_memory_map (struct target_ops
*ops
)
10247 VEC(mem_region_s
) *result
= NULL
;
10248 char *text
= target_read_stralloc (¤t_target
,
10249 TARGET_OBJECT_MEMORY_MAP
, NULL
);
10253 struct cleanup
*back_to
= make_cleanup (xfree
, text
);
10255 result
= parse_memory_map (text
);
10256 do_cleanups (back_to
);
10263 packet_command (char *args
, int from_tty
)
10265 struct remote_state
*rs
= get_remote_state ();
10267 if (!rs
->remote_desc
)
10268 error (_("command can only be used with remote target"));
10271 error (_("remote-packet command requires packet text as argument"));
10273 puts_filtered ("sending: ");
10274 print_packet (args
);
10275 puts_filtered ("\n");
10278 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
10279 puts_filtered ("received: ");
10280 print_packet (rs
->buf
);
10281 puts_filtered ("\n");
10285 /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */
10287 static void display_thread_info (struct gdb_ext_thread_info
*info
);
10289 static void threadset_test_cmd (char *cmd
, int tty
);
10291 static void threadalive_test (char *cmd
, int tty
);
10293 static void threadlist_test_cmd (char *cmd
, int tty
);
10295 int get_and_display_threadinfo (threadref
*ref
);
10297 static void threadinfo_test_cmd (char *cmd
, int tty
);
10299 static int thread_display_step (threadref
*ref
, void *context
);
10301 static void threadlist_update_test_cmd (char *cmd
, int tty
);
10303 static void init_remote_threadtests (void);
10305 #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */
10308 threadset_test_cmd (char *cmd
, int tty
)
10310 int sample_thread
= SAMPLE_THREAD
;
10312 printf_filtered (_("Remote threadset test\n"));
10313 set_general_thread (sample_thread
);
10318 threadalive_test (char *cmd
, int tty
)
10320 int sample_thread
= SAMPLE_THREAD
;
10321 int pid
= ptid_get_pid (inferior_ptid
);
10322 ptid_t ptid
= ptid_build (pid
, sample_thread
, 0);
10324 if (remote_thread_alive (ptid
))
10325 printf_filtered ("PASS: Thread alive test\n");
10327 printf_filtered ("FAIL: Thread alive test\n");
10330 void output_threadid (char *title
, threadref
*ref
);
10333 output_threadid (char *title
, threadref
*ref
)
10337 pack_threadid (&hexid
[0], ref
); /* Convert threead id into hex. */
10339 printf_filtered ("%s %s\n", title
, (&hexid
[0]));
10343 threadlist_test_cmd (char *cmd
, int tty
)
10346 threadref nextthread
;
10347 int done
, result_count
;
10348 threadref threadlist
[3];
10350 printf_filtered ("Remote Threadlist test\n");
10351 if (!remote_get_threadlist (startflag
, &nextthread
, 3, &done
,
10352 &result_count
, &threadlist
[0]))
10353 printf_filtered ("FAIL: threadlist test\n");
10356 threadref
*scan
= threadlist
;
10357 threadref
*limit
= scan
+ result_count
;
10359 while (scan
< limit
)
10360 output_threadid (" thread ", scan
++);
10365 display_thread_info (struct gdb_ext_thread_info
*info
)
10367 output_threadid ("Threadid: ", &info
->threadid
);
10368 printf_filtered ("Name: %s\n ", info
->shortname
);
10369 printf_filtered ("State: %s\n", info
->display
);
10370 printf_filtered ("other: %s\n\n", info
->more_display
);
10374 get_and_display_threadinfo (threadref
*ref
)
10378 struct gdb_ext_thread_info threadinfo
;
10380 set
= TAG_THREADID
| TAG_EXISTS
| TAG_THREADNAME
10381 | TAG_MOREDISPLAY
| TAG_DISPLAY
;
10382 if (0 != (result
= remote_get_threadinfo (ref
, set
, &threadinfo
)))
10383 display_thread_info (&threadinfo
);
10388 threadinfo_test_cmd (char *cmd
, int tty
)
10390 int athread
= SAMPLE_THREAD
;
10394 int_to_threadref (&thread
, athread
);
10395 printf_filtered ("Remote Threadinfo test\n");
10396 if (!get_and_display_threadinfo (&thread
))
10397 printf_filtered ("FAIL cannot get thread info\n");
10401 thread_display_step (threadref
*ref
, void *context
)
10403 /* output_threadid(" threadstep ",ref); *//* simple test */
10404 return get_and_display_threadinfo (ref
);
10408 threadlist_update_test_cmd (char *cmd
, int tty
)
10410 printf_filtered ("Remote Threadlist update test\n");
10411 remote_threadlist_iterator (thread_display_step
, 0, CRAZY_MAX_THREADS
);
10415 init_remote_threadtests (void)
10417 add_com ("tlist", class_obscure
, threadlist_test_cmd
,
10418 _("Fetch and print the remote list of "
10419 "thread identifiers, one pkt only"));
10420 add_com ("tinfo", class_obscure
, threadinfo_test_cmd
,
10421 _("Fetch and display info about one thread"));
10422 add_com ("tset", class_obscure
, threadset_test_cmd
,
10423 _("Test setting to a different thread"));
10424 add_com ("tupd", class_obscure
, threadlist_update_test_cmd
,
10425 _("Iterate through updating all remote thread info"));
10426 add_com ("talive", class_obscure
, threadalive_test
,
10427 _(" Remote thread alive test "));
10432 /* Convert a thread ID to a string. Returns the string in a static
10436 remote_pid_to_str (struct target_ops
*ops
, ptid_t ptid
)
10438 static char buf
[64];
10439 struct remote_state
*rs
= get_remote_state ();
10441 if (ptid_equal (ptid
, null_ptid
))
10442 return normal_pid_to_str (ptid
);
10443 else if (ptid_is_pid (ptid
))
10445 /* Printing an inferior target id. */
10447 /* When multi-process extensions are off, there's no way in the
10448 remote protocol to know the remote process id, if there's any
10449 at all. There's one exception --- when we're connected with
10450 target extended-remote, and we manually attached to a process
10451 with "attach PID". We don't record anywhere a flag that
10452 allows us to distinguish that case from the case of
10453 connecting with extended-remote and the stub already being
10454 attached to a process, and reporting yes to qAttached, hence
10455 no smart special casing here. */
10456 if (!remote_multi_process_p (rs
))
10458 xsnprintf (buf
, sizeof buf
, "Remote target");
10462 return normal_pid_to_str (ptid
);
10466 if (ptid_equal (magic_null_ptid
, ptid
))
10467 xsnprintf (buf
, sizeof buf
, "Thread <main>");
10468 else if (rs
->extended
&& remote_multi_process_p (rs
))
10469 if (ptid_get_lwp (ptid
) == 0)
10470 return normal_pid_to_str (ptid
);
10472 xsnprintf (buf
, sizeof buf
, "Thread %d.%ld",
10473 ptid_get_pid (ptid
), ptid_get_lwp (ptid
));
10475 xsnprintf (buf
, sizeof buf
, "Thread %ld",
10476 ptid_get_lwp (ptid
));
10481 /* Get the address of the thread local variable in OBJFILE which is
10482 stored at OFFSET within the thread local storage for thread PTID. */
10485 remote_get_thread_local_address (struct target_ops
*ops
,
10486 ptid_t ptid
, CORE_ADDR lm
, CORE_ADDR offset
)
10488 if (packet_support (PACKET_qGetTLSAddr
) != PACKET_DISABLE
)
10490 struct remote_state
*rs
= get_remote_state ();
10492 char *endp
= rs
->buf
+ get_remote_packet_size ();
10493 enum packet_result result
;
10495 strcpy (p
, "qGetTLSAddr:");
10497 p
= write_ptid (p
, endp
, ptid
);
10499 p
+= hexnumstr (p
, offset
);
10501 p
+= hexnumstr (p
, lm
);
10505 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
10506 result
= packet_ok (rs
->buf
,
10507 &remote_protocol_packets
[PACKET_qGetTLSAddr
]);
10508 if (result
== PACKET_OK
)
10512 unpack_varlen_hex (rs
->buf
, &result
);
10515 else if (result
== PACKET_UNKNOWN
)
10516 throw_error (TLS_GENERIC_ERROR
,
10517 _("Remote target doesn't support qGetTLSAddr packet"));
10519 throw_error (TLS_GENERIC_ERROR
,
10520 _("Remote target failed to process qGetTLSAddr request"));
10523 throw_error (TLS_GENERIC_ERROR
,
10524 _("TLS not supported or disabled on this target"));
10529 /* Provide thread local base, i.e. Thread Information Block address.
10530 Returns 1 if ptid is found and thread_local_base is non zero. */
10533 remote_get_tib_address (struct target_ops
*self
, ptid_t ptid
, CORE_ADDR
*addr
)
10535 if (packet_support (PACKET_qGetTIBAddr
) != PACKET_DISABLE
)
10537 struct remote_state
*rs
= get_remote_state ();
10539 char *endp
= rs
->buf
+ get_remote_packet_size ();
10540 enum packet_result result
;
10542 strcpy (p
, "qGetTIBAddr:");
10544 p
= write_ptid (p
, endp
, ptid
);
10548 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
10549 result
= packet_ok (rs
->buf
,
10550 &remote_protocol_packets
[PACKET_qGetTIBAddr
]);
10551 if (result
== PACKET_OK
)
10555 unpack_varlen_hex (rs
->buf
, &result
);
10557 *addr
= (CORE_ADDR
) result
;
10560 else if (result
== PACKET_UNKNOWN
)
10561 error (_("Remote target doesn't support qGetTIBAddr packet"));
10563 error (_("Remote target failed to process qGetTIBAddr request"));
10566 error (_("qGetTIBAddr not supported or disabled on this target"));
10571 /* Support for inferring a target description based on the current
10572 architecture and the size of a 'g' packet. While the 'g' packet
10573 can have any size (since optional registers can be left off the
10574 end), some sizes are easily recognizable given knowledge of the
10575 approximate architecture. */
10577 struct remote_g_packet_guess
10580 const struct target_desc
*tdesc
;
10582 typedef struct remote_g_packet_guess remote_g_packet_guess_s
;
10583 DEF_VEC_O(remote_g_packet_guess_s
);
10585 struct remote_g_packet_data
10587 VEC(remote_g_packet_guess_s
) *guesses
;
10590 static struct gdbarch_data
*remote_g_packet_data_handle
;
10593 remote_g_packet_data_init (struct obstack
*obstack
)
10595 return OBSTACK_ZALLOC (obstack
, struct remote_g_packet_data
);
10599 register_remote_g_packet_guess (struct gdbarch
*gdbarch
, int bytes
,
10600 const struct target_desc
*tdesc
)
10602 struct remote_g_packet_data
*data
10603 = ((struct remote_g_packet_data
*)
10604 gdbarch_data (gdbarch
, remote_g_packet_data_handle
));
10605 struct remote_g_packet_guess new_guess
, *guess
;
10608 gdb_assert (tdesc
!= NULL
);
10611 VEC_iterate (remote_g_packet_guess_s
, data
->guesses
, ix
, guess
);
10613 if (guess
->bytes
== bytes
)
10614 internal_error (__FILE__
, __LINE__
,
10615 _("Duplicate g packet description added for size %d"),
10618 new_guess
.bytes
= bytes
;
10619 new_guess
.tdesc
= tdesc
;
10620 VEC_safe_push (remote_g_packet_guess_s
, data
->guesses
, &new_guess
);
10623 /* Return 1 if remote_read_description would do anything on this target
10624 and architecture, 0 otherwise. */
10627 remote_read_description_p (struct target_ops
*target
)
10629 struct remote_g_packet_data
*data
10630 = ((struct remote_g_packet_data
*)
10631 gdbarch_data (target_gdbarch (), remote_g_packet_data_handle
));
10633 if (!VEC_empty (remote_g_packet_guess_s
, data
->guesses
))
10639 static const struct target_desc
*
10640 remote_read_description (struct target_ops
*target
)
10642 struct remote_g_packet_data
*data
10643 = ((struct remote_g_packet_data
*)
10644 gdbarch_data (target_gdbarch (), remote_g_packet_data_handle
));
10646 /* Do not try this during initial connection, when we do not know
10647 whether there is a running but stopped thread. */
10648 if (!target_has_execution
|| ptid_equal (inferior_ptid
, null_ptid
))
10649 return target
->beneath
->to_read_description (target
->beneath
);
10651 if (!VEC_empty (remote_g_packet_guess_s
, data
->guesses
))
10653 struct remote_g_packet_guess
*guess
;
10655 int bytes
= send_g_packet ();
10658 VEC_iterate (remote_g_packet_guess_s
, data
->guesses
, ix
, guess
);
10660 if (guess
->bytes
== bytes
)
10661 return guess
->tdesc
;
10663 /* We discard the g packet. A minor optimization would be to
10664 hold on to it, and fill the register cache once we have selected
10665 an architecture, but it's too tricky to do safely. */
10668 return target
->beneath
->to_read_description (target
->beneath
);
10671 /* Remote file transfer support. This is host-initiated I/O, not
10672 target-initiated; for target-initiated, see remote-fileio.c. */
10674 /* If *LEFT is at least the length of STRING, copy STRING to
10675 *BUFFER, update *BUFFER to point to the new end of the buffer, and
10676 decrease *LEFT. Otherwise raise an error. */
10679 remote_buffer_add_string (char **buffer
, int *left
, char *string
)
10681 int len
= strlen (string
);
10684 error (_("Packet too long for target."));
10686 memcpy (*buffer
, string
, len
);
10690 /* NUL-terminate the buffer as a convenience, if there is
10696 /* If *LEFT is large enough, hex encode LEN bytes from BYTES into
10697 *BUFFER, update *BUFFER to point to the new end of the buffer, and
10698 decrease *LEFT. Otherwise raise an error. */
10701 remote_buffer_add_bytes (char **buffer
, int *left
, const gdb_byte
*bytes
,
10704 if (2 * len
> *left
)
10705 error (_("Packet too long for target."));
10707 bin2hex (bytes
, *buffer
, len
);
10708 *buffer
+= 2 * len
;
10711 /* NUL-terminate the buffer as a convenience, if there is
10717 /* If *LEFT is large enough, convert VALUE to hex and add it to
10718 *BUFFER, update *BUFFER to point to the new end of the buffer, and
10719 decrease *LEFT. Otherwise raise an error. */
10722 remote_buffer_add_int (char **buffer
, int *left
, ULONGEST value
)
10724 int len
= hexnumlen (value
);
10727 error (_("Packet too long for target."));
10729 hexnumstr (*buffer
, value
);
10733 /* NUL-terminate the buffer as a convenience, if there is
10739 /* Parse an I/O result packet from BUFFER. Set RETCODE to the return
10740 value, *REMOTE_ERRNO to the remote error number or zero if none
10741 was included, and *ATTACHMENT to point to the start of the annex
10742 if any. The length of the packet isn't needed here; there may
10743 be NUL bytes in BUFFER, but they will be after *ATTACHMENT.
10745 Return 0 if the packet could be parsed, -1 if it could not. If
10746 -1 is returned, the other variables may not be initialized. */
10749 remote_hostio_parse_result (char *buffer
, int *retcode
,
10750 int *remote_errno
, char **attachment
)
10755 *attachment
= NULL
;
10757 if (buffer
[0] != 'F')
10761 *retcode
= strtol (&buffer
[1], &p
, 16);
10762 if (errno
!= 0 || p
== &buffer
[1])
10765 /* Check for ",errno". */
10769 *remote_errno
= strtol (p
+ 1, &p2
, 16);
10770 if (errno
!= 0 || p
+ 1 == p2
)
10775 /* Check for ";attachment". If there is no attachment, the
10776 packet should end here. */
10779 *attachment
= p
+ 1;
10782 else if (*p
== '\0')
10788 /* Send a prepared I/O packet to the target and read its response.
10789 The prepared packet is in the global RS->BUF before this function
10790 is called, and the answer is there when we return.
10792 COMMAND_BYTES is the length of the request to send, which may include
10793 binary data. WHICH_PACKET is the packet configuration to check
10794 before attempting a packet. If an error occurs, *REMOTE_ERRNO
10795 is set to the error number and -1 is returned. Otherwise the value
10796 returned by the function is returned.
10798 ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an
10799 attachment is expected; an error will be reported if there's a
10800 mismatch. If one is found, *ATTACHMENT will be set to point into
10801 the packet buffer and *ATTACHMENT_LEN will be set to the
10802 attachment's length. */
10805 remote_hostio_send_command (int command_bytes
, int which_packet
,
10806 int *remote_errno
, char **attachment
,
10807 int *attachment_len
)
10809 struct remote_state
*rs
= get_remote_state ();
10810 int ret
, bytes_read
;
10811 char *attachment_tmp
;
10813 if (!rs
->remote_desc
10814 || packet_support (which_packet
) == PACKET_DISABLE
)
10816 *remote_errno
= FILEIO_ENOSYS
;
10820 putpkt_binary (rs
->buf
, command_bytes
);
10821 bytes_read
= getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0);
10823 /* If it timed out, something is wrong. Don't try to parse the
10825 if (bytes_read
< 0)
10827 *remote_errno
= FILEIO_EINVAL
;
10831 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[which_packet
]))
10834 *remote_errno
= FILEIO_EINVAL
;
10836 case PACKET_UNKNOWN
:
10837 *remote_errno
= FILEIO_ENOSYS
;
10843 if (remote_hostio_parse_result (rs
->buf
, &ret
, remote_errno
,
10846 *remote_errno
= FILEIO_EINVAL
;
10850 /* Make sure we saw an attachment if and only if we expected one. */
10851 if ((attachment_tmp
== NULL
&& attachment
!= NULL
)
10852 || (attachment_tmp
!= NULL
&& attachment
== NULL
))
10854 *remote_errno
= FILEIO_EINVAL
;
10858 /* If an attachment was found, it must point into the packet buffer;
10859 work out how many bytes there were. */
10860 if (attachment_tmp
!= NULL
)
10862 *attachment
= attachment_tmp
;
10863 *attachment_len
= bytes_read
- (*attachment
- rs
->buf
);
10869 /* Invalidate the readahead cache. */
10872 readahead_cache_invalidate (void)
10874 struct remote_state
*rs
= get_remote_state ();
10876 rs
->readahead_cache
.fd
= -1;
10879 /* Invalidate the readahead cache if it is holding data for FD. */
10882 readahead_cache_invalidate_fd (int fd
)
10884 struct remote_state
*rs
= get_remote_state ();
10886 if (rs
->readahead_cache
.fd
== fd
)
10887 rs
->readahead_cache
.fd
= -1;
10890 /* Set the filesystem remote_hostio functions that take FILENAME
10891 arguments will use. Return 0 on success, or -1 if an error
10892 occurs (and set *REMOTE_ERRNO). */
10895 remote_hostio_set_filesystem (struct inferior
*inf
, int *remote_errno
)
10897 struct remote_state
*rs
= get_remote_state ();
10898 int required_pid
= (inf
== NULL
|| inf
->fake_pid_p
) ? 0 : inf
->pid
;
10900 int left
= get_remote_packet_size () - 1;
10904 if (packet_support (PACKET_vFile_setfs
) == PACKET_DISABLE
)
10907 if (rs
->fs_pid
!= -1 && required_pid
== rs
->fs_pid
)
10910 remote_buffer_add_string (&p
, &left
, "vFile:setfs:");
10912 xsnprintf (arg
, sizeof (arg
), "%x", required_pid
);
10913 remote_buffer_add_string (&p
, &left
, arg
);
10915 ret
= remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_setfs
,
10916 remote_errno
, NULL
, NULL
);
10918 if (packet_support (PACKET_vFile_setfs
) == PACKET_DISABLE
)
10922 rs
->fs_pid
= required_pid
;
10927 /* Implementation of to_fileio_open. */
10930 remote_hostio_open (struct target_ops
*self
,
10931 struct inferior
*inf
, const char *filename
,
10932 int flags
, int mode
, int warn_if_slow
,
10935 struct remote_state
*rs
= get_remote_state ();
10937 int left
= get_remote_packet_size () - 1;
10941 static int warning_issued
= 0;
10943 printf_unfiltered (_("Reading %s from remote target...\n"),
10946 if (!warning_issued
)
10948 warning (_("File transfers from remote targets can be slow."
10949 " Use \"set sysroot\" to access files locally"
10951 warning_issued
= 1;
10955 if (remote_hostio_set_filesystem (inf
, remote_errno
) != 0)
10958 remote_buffer_add_string (&p
, &left
, "vFile:open:");
10960 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
10961 strlen (filename
));
10962 remote_buffer_add_string (&p
, &left
, ",");
10964 remote_buffer_add_int (&p
, &left
, flags
);
10965 remote_buffer_add_string (&p
, &left
, ",");
10967 remote_buffer_add_int (&p
, &left
, mode
);
10969 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_open
,
10970 remote_errno
, NULL
, NULL
);
10973 /* Implementation of to_fileio_pwrite. */
10976 remote_hostio_pwrite (struct target_ops
*self
,
10977 int fd
, const gdb_byte
*write_buf
, int len
,
10978 ULONGEST offset
, int *remote_errno
)
10980 struct remote_state
*rs
= get_remote_state ();
10982 int left
= get_remote_packet_size ();
10985 readahead_cache_invalidate_fd (fd
);
10987 remote_buffer_add_string (&p
, &left
, "vFile:pwrite:");
10989 remote_buffer_add_int (&p
, &left
, fd
);
10990 remote_buffer_add_string (&p
, &left
, ",");
10992 remote_buffer_add_int (&p
, &left
, offset
);
10993 remote_buffer_add_string (&p
, &left
, ",");
10995 p
+= remote_escape_output (write_buf
, len
, 1, (gdb_byte
*) p
, &out_len
,
10996 get_remote_packet_size () - (p
- rs
->buf
));
10998 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_pwrite
,
10999 remote_errno
, NULL
, NULL
);
11002 /* Helper for the implementation of to_fileio_pread. Read the file
11003 from the remote side with vFile:pread. */
11006 remote_hostio_pread_vFile (struct target_ops
*self
,
11007 int fd
, gdb_byte
*read_buf
, int len
,
11008 ULONGEST offset
, int *remote_errno
)
11010 struct remote_state
*rs
= get_remote_state ();
11013 int left
= get_remote_packet_size ();
11014 int ret
, attachment_len
;
11017 remote_buffer_add_string (&p
, &left
, "vFile:pread:");
11019 remote_buffer_add_int (&p
, &left
, fd
);
11020 remote_buffer_add_string (&p
, &left
, ",");
11022 remote_buffer_add_int (&p
, &left
, len
);
11023 remote_buffer_add_string (&p
, &left
, ",");
11025 remote_buffer_add_int (&p
, &left
, offset
);
11027 ret
= remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_pread
,
11028 remote_errno
, &attachment
,
11034 read_len
= remote_unescape_input ((gdb_byte
*) attachment
, attachment_len
,
11036 if (read_len
!= ret
)
11037 error (_("Read returned %d, but %d bytes."), ret
, (int) read_len
);
11042 /* Serve pread from the readahead cache. Returns number of bytes
11043 read, or 0 if the request can't be served from the cache. */
11046 remote_hostio_pread_from_cache (struct remote_state
*rs
,
11047 int fd
, gdb_byte
*read_buf
, size_t len
,
11050 struct readahead_cache
*cache
= &rs
->readahead_cache
;
11052 if (cache
->fd
== fd
11053 && cache
->offset
<= offset
11054 && offset
< cache
->offset
+ cache
->bufsize
)
11056 ULONGEST max
= cache
->offset
+ cache
->bufsize
;
11058 if (offset
+ len
> max
)
11059 len
= max
- offset
;
11061 memcpy (read_buf
, cache
->buf
+ offset
- cache
->offset
, len
);
11068 /* Implementation of to_fileio_pread. */
11071 remote_hostio_pread (struct target_ops
*self
,
11072 int fd
, gdb_byte
*read_buf
, int len
,
11073 ULONGEST offset
, int *remote_errno
)
11076 struct remote_state
*rs
= get_remote_state ();
11077 struct readahead_cache
*cache
= &rs
->readahead_cache
;
11079 ret
= remote_hostio_pread_from_cache (rs
, fd
, read_buf
, len
, offset
);
11082 cache
->hit_count
++;
11085 fprintf_unfiltered (gdb_stdlog
, "readahead cache hit %s\n",
11086 pulongest (cache
->hit_count
));
11090 cache
->miss_count
++;
11092 fprintf_unfiltered (gdb_stdlog
, "readahead cache miss %s\n",
11093 pulongest (cache
->miss_count
));
11096 cache
->offset
= offset
;
11097 cache
->bufsize
= get_remote_packet_size ();
11098 cache
->buf
= (gdb_byte
*) xrealloc (cache
->buf
, cache
->bufsize
);
11100 ret
= remote_hostio_pread_vFile (self
, cache
->fd
, cache
->buf
, cache
->bufsize
,
11101 cache
->offset
, remote_errno
);
11104 readahead_cache_invalidate_fd (fd
);
11108 cache
->bufsize
= ret
;
11109 return remote_hostio_pread_from_cache (rs
, fd
, read_buf
, len
, offset
);
11112 /* Implementation of to_fileio_close. */
11115 remote_hostio_close (struct target_ops
*self
, int fd
, int *remote_errno
)
11117 struct remote_state
*rs
= get_remote_state ();
11119 int left
= get_remote_packet_size () - 1;
11121 readahead_cache_invalidate_fd (fd
);
11123 remote_buffer_add_string (&p
, &left
, "vFile:close:");
11125 remote_buffer_add_int (&p
, &left
, fd
);
11127 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_close
,
11128 remote_errno
, NULL
, NULL
);
11131 /* Implementation of to_fileio_unlink. */
11134 remote_hostio_unlink (struct target_ops
*self
,
11135 struct inferior
*inf
, const char *filename
,
11138 struct remote_state
*rs
= get_remote_state ();
11140 int left
= get_remote_packet_size () - 1;
11142 if (remote_hostio_set_filesystem (inf
, remote_errno
) != 0)
11145 remote_buffer_add_string (&p
, &left
, "vFile:unlink:");
11147 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
11148 strlen (filename
));
11150 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_unlink
,
11151 remote_errno
, NULL
, NULL
);
11154 /* Implementation of to_fileio_readlink. */
11157 remote_hostio_readlink (struct target_ops
*self
,
11158 struct inferior
*inf
, const char *filename
,
11161 struct remote_state
*rs
= get_remote_state ();
11164 int left
= get_remote_packet_size ();
11165 int len
, attachment_len
;
11169 if (remote_hostio_set_filesystem (inf
, remote_errno
) != 0)
11172 remote_buffer_add_string (&p
, &left
, "vFile:readlink:");
11174 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
11175 strlen (filename
));
11177 len
= remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_readlink
,
11178 remote_errno
, &attachment
,
11184 ret
= (char *) xmalloc (len
+ 1);
11186 read_len
= remote_unescape_input ((gdb_byte
*) attachment
, attachment_len
,
11187 (gdb_byte
*) ret
, len
);
11188 if (read_len
!= len
)
11189 error (_("Readlink returned %d, but %d bytes."), len
, read_len
);
11195 /* Implementation of to_fileio_fstat. */
11198 remote_hostio_fstat (struct target_ops
*self
,
11199 int fd
, struct stat
*st
,
11202 struct remote_state
*rs
= get_remote_state ();
11204 int left
= get_remote_packet_size ();
11205 int attachment_len
, ret
;
11207 struct fio_stat fst
;
11210 remote_buffer_add_string (&p
, &left
, "vFile:fstat:");
11212 remote_buffer_add_int (&p
, &left
, fd
);
11214 ret
= remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_fstat
,
11215 remote_errno
, &attachment
,
11219 if (*remote_errno
!= FILEIO_ENOSYS
)
11222 /* Strictly we should return -1, ENOSYS here, but when
11223 "set sysroot remote:" was implemented in August 2008
11224 BFD's need for a stat function was sidestepped with
11225 this hack. This was not remedied until March 2015
11226 so we retain the previous behavior to avoid breaking
11229 Note that the memset is a March 2015 addition; older
11230 GDBs set st_size *and nothing else* so the structure
11231 would have garbage in all other fields. This might
11232 break something but retaining the previous behavior
11233 here would be just too wrong. */
11235 memset (st
, 0, sizeof (struct stat
));
11236 st
->st_size
= INT_MAX
;
11240 read_len
= remote_unescape_input ((gdb_byte
*) attachment
, attachment_len
,
11241 (gdb_byte
*) &fst
, sizeof (fst
));
11243 if (read_len
!= ret
)
11244 error (_("vFile:fstat returned %d, but %d bytes."), ret
, read_len
);
11246 if (read_len
!= sizeof (fst
))
11247 error (_("vFile:fstat returned %d bytes, but expecting %d."),
11248 read_len
, (int) sizeof (fst
));
11250 remote_fileio_to_host_stat (&fst
, st
);
11255 /* Implementation of to_filesystem_is_local. */
11258 remote_filesystem_is_local (struct target_ops
*self
)
11260 /* Valgrind GDB presents itself as a remote target but works
11261 on the local filesystem: it does not implement remote get
11262 and users are not expected to set a sysroot. To handle
11263 this case we treat the remote filesystem as local if the
11264 sysroot is exactly TARGET_SYSROOT_PREFIX and if the stub
11265 does not support vFile:open. */
11266 if (strcmp (gdb_sysroot
, TARGET_SYSROOT_PREFIX
) == 0)
11268 enum packet_support ps
= packet_support (PACKET_vFile_open
);
11270 if (ps
== PACKET_SUPPORT_UNKNOWN
)
11272 int fd
, remote_errno
;
11274 /* Try opening a file to probe support. The supplied
11275 filename is irrelevant, we only care about whether
11276 the stub recognizes the packet or not. */
11277 fd
= remote_hostio_open (self
, NULL
, "just probing",
11278 FILEIO_O_RDONLY
, 0700, 0,
11282 remote_hostio_close (self
, fd
, &remote_errno
);
11284 ps
= packet_support (PACKET_vFile_open
);
11287 if (ps
== PACKET_DISABLE
)
11289 static int warning_issued
= 0;
11291 if (!warning_issued
)
11293 warning (_("remote target does not support file"
11294 " transfer, attempting to access files"
11295 " from local filesystem."));
11296 warning_issued
= 1;
11307 remote_fileio_errno_to_host (int errnum
)
11313 case FILEIO_ENOENT
:
11321 case FILEIO_EACCES
:
11323 case FILEIO_EFAULT
:
11327 case FILEIO_EEXIST
:
11329 case FILEIO_ENODEV
:
11331 case FILEIO_ENOTDIR
:
11333 case FILEIO_EISDIR
:
11335 case FILEIO_EINVAL
:
11337 case FILEIO_ENFILE
:
11339 case FILEIO_EMFILE
:
11343 case FILEIO_ENOSPC
:
11345 case FILEIO_ESPIPE
:
11349 case FILEIO_ENOSYS
:
11351 case FILEIO_ENAMETOOLONG
:
11352 return ENAMETOOLONG
;
11358 remote_hostio_error (int errnum
)
11360 int host_error
= remote_fileio_errno_to_host (errnum
);
11362 if (host_error
== -1)
11363 error (_("Unknown remote I/O error %d"), errnum
);
11365 error (_("Remote I/O error: %s"), safe_strerror (host_error
));
11369 remote_hostio_close_cleanup (void *opaque
)
11371 int fd
= *(int *) opaque
;
11374 remote_hostio_close (find_target_at (process_stratum
), fd
, &remote_errno
);
11378 remote_file_put (const char *local_file
, const char *remote_file
, int from_tty
)
11380 struct cleanup
*back_to
, *close_cleanup
;
11381 int retcode
, fd
, remote_errno
, bytes
, io_size
;
11384 int bytes_in_buffer
;
11387 struct remote_state
*rs
= get_remote_state ();
11389 if (!rs
->remote_desc
)
11390 error (_("command can only be used with remote target"));
11392 file
= gdb_fopen_cloexec (local_file
, "rb");
11394 perror_with_name (local_file
);
11395 back_to
= make_cleanup_fclose (file
);
11397 fd
= remote_hostio_open (find_target_at (process_stratum
), NULL
,
11398 remote_file
, (FILEIO_O_WRONLY
| FILEIO_O_CREAT
11400 0700, 0, &remote_errno
);
11402 remote_hostio_error (remote_errno
);
11404 /* Send up to this many bytes at once. They won't all fit in the
11405 remote packet limit, so we'll transfer slightly fewer. */
11406 io_size
= get_remote_packet_size ();
11407 buffer
= (gdb_byte
*) xmalloc (io_size
);
11408 make_cleanup (xfree
, buffer
);
11410 close_cleanup
= make_cleanup (remote_hostio_close_cleanup
, &fd
);
11412 bytes_in_buffer
= 0;
11415 while (bytes_in_buffer
|| !saw_eof
)
11419 bytes
= fread (buffer
+ bytes_in_buffer
, 1,
11420 io_size
- bytes_in_buffer
,
11425 error (_("Error reading %s."), local_file
);
11428 /* EOF. Unless there is something still in the
11429 buffer from the last iteration, we are done. */
11431 if (bytes_in_buffer
== 0)
11439 bytes
+= bytes_in_buffer
;
11440 bytes_in_buffer
= 0;
11442 retcode
= remote_hostio_pwrite (find_target_at (process_stratum
),
11444 offset
, &remote_errno
);
11447 remote_hostio_error (remote_errno
);
11448 else if (retcode
== 0)
11449 error (_("Remote write of %d bytes returned 0!"), bytes
);
11450 else if (retcode
< bytes
)
11452 /* Short write. Save the rest of the read data for the next
11454 bytes_in_buffer
= bytes
- retcode
;
11455 memmove (buffer
, buffer
+ retcode
, bytes_in_buffer
);
11461 discard_cleanups (close_cleanup
);
11462 if (remote_hostio_close (find_target_at (process_stratum
), fd
, &remote_errno
))
11463 remote_hostio_error (remote_errno
);
11466 printf_filtered (_("Successfully sent file \"%s\".\n"), local_file
);
11467 do_cleanups (back_to
);
11471 remote_file_get (const char *remote_file
, const char *local_file
, int from_tty
)
11473 struct cleanup
*back_to
, *close_cleanup
;
11474 int fd
, remote_errno
, bytes
, io_size
;
11478 struct remote_state
*rs
= get_remote_state ();
11480 if (!rs
->remote_desc
)
11481 error (_("command can only be used with remote target"));
11483 fd
= remote_hostio_open (find_target_at (process_stratum
), NULL
,
11484 remote_file
, FILEIO_O_RDONLY
, 0, 0,
11487 remote_hostio_error (remote_errno
);
11489 file
= gdb_fopen_cloexec (local_file
, "wb");
11491 perror_with_name (local_file
);
11492 back_to
= make_cleanup_fclose (file
);
11494 /* Send up to this many bytes at once. They won't all fit in the
11495 remote packet limit, so we'll transfer slightly fewer. */
11496 io_size
= get_remote_packet_size ();
11497 buffer
= (gdb_byte
*) xmalloc (io_size
);
11498 make_cleanup (xfree
, buffer
);
11500 close_cleanup
= make_cleanup (remote_hostio_close_cleanup
, &fd
);
11505 bytes
= remote_hostio_pread (find_target_at (process_stratum
),
11506 fd
, buffer
, io_size
, offset
, &remote_errno
);
11508 /* Success, but no bytes, means end-of-file. */
11511 remote_hostio_error (remote_errno
);
11515 bytes
= fwrite (buffer
, 1, bytes
, file
);
11517 perror_with_name (local_file
);
11520 discard_cleanups (close_cleanup
);
11521 if (remote_hostio_close (find_target_at (process_stratum
), fd
, &remote_errno
))
11522 remote_hostio_error (remote_errno
);
11525 printf_filtered (_("Successfully fetched file \"%s\".\n"), remote_file
);
11526 do_cleanups (back_to
);
11530 remote_file_delete (const char *remote_file
, int from_tty
)
11532 int retcode
, remote_errno
;
11533 struct remote_state
*rs
= get_remote_state ();
11535 if (!rs
->remote_desc
)
11536 error (_("command can only be used with remote target"));
11538 retcode
= remote_hostio_unlink (find_target_at (process_stratum
),
11539 NULL
, remote_file
, &remote_errno
);
11541 remote_hostio_error (remote_errno
);
11544 printf_filtered (_("Successfully deleted file \"%s\".\n"), remote_file
);
11548 remote_put_command (char *args
, int from_tty
)
11550 struct cleanup
*back_to
;
11554 error_no_arg (_("file to put"));
11556 argv
= gdb_buildargv (args
);
11557 back_to
= make_cleanup_freeargv (argv
);
11558 if (argv
[0] == NULL
|| argv
[1] == NULL
|| argv
[2] != NULL
)
11559 error (_("Invalid parameters to remote put"));
11561 remote_file_put (argv
[0], argv
[1], from_tty
);
11563 do_cleanups (back_to
);
11567 remote_get_command (char *args
, int from_tty
)
11569 struct cleanup
*back_to
;
11573 error_no_arg (_("file to get"));
11575 argv
= gdb_buildargv (args
);
11576 back_to
= make_cleanup_freeargv (argv
);
11577 if (argv
[0] == NULL
|| argv
[1] == NULL
|| argv
[2] != NULL
)
11578 error (_("Invalid parameters to remote get"));
11580 remote_file_get (argv
[0], argv
[1], from_tty
);
11582 do_cleanups (back_to
);
11586 remote_delete_command (char *args
, int from_tty
)
11588 struct cleanup
*back_to
;
11592 error_no_arg (_("file to delete"));
11594 argv
= gdb_buildargv (args
);
11595 back_to
= make_cleanup_freeargv (argv
);
11596 if (argv
[0] == NULL
|| argv
[1] != NULL
)
11597 error (_("Invalid parameters to remote delete"));
11599 remote_file_delete (argv
[0], from_tty
);
11601 do_cleanups (back_to
);
11605 remote_command (char *args
, int from_tty
)
11607 help_list (remote_cmdlist
, "remote ", all_commands
, gdb_stdout
);
11611 remote_can_execute_reverse (struct target_ops
*self
)
11613 if (packet_support (PACKET_bs
) == PACKET_ENABLE
11614 || packet_support (PACKET_bc
) == PACKET_ENABLE
)
11621 remote_supports_non_stop (struct target_ops
*self
)
11627 remote_supports_disable_randomization (struct target_ops
*self
)
11629 /* Only supported in extended mode. */
11634 remote_supports_multi_process (struct target_ops
*self
)
11636 struct remote_state
*rs
= get_remote_state ();
11638 /* Only extended-remote handles being attached to multiple
11639 processes, even though plain remote can use the multi-process
11640 thread id extensions, so that GDB knows the target process's
11642 return rs
->extended
&& remote_multi_process_p (rs
);
11646 remote_supports_cond_tracepoints (void)
11648 return packet_support (PACKET_ConditionalTracepoints
) == PACKET_ENABLE
;
11652 remote_supports_cond_breakpoints (struct target_ops
*self
)
11654 return packet_support (PACKET_ConditionalBreakpoints
) == PACKET_ENABLE
;
11658 remote_supports_fast_tracepoints (void)
11660 return packet_support (PACKET_FastTracepoints
) == PACKET_ENABLE
;
11664 remote_supports_static_tracepoints (void)
11666 return packet_support (PACKET_StaticTracepoints
) == PACKET_ENABLE
;
11670 remote_supports_install_in_trace (void)
11672 return packet_support (PACKET_InstallInTrace
) == PACKET_ENABLE
;
11676 remote_supports_enable_disable_tracepoint (struct target_ops
*self
)
11678 return (packet_support (PACKET_EnableDisableTracepoints_feature
)
11683 remote_supports_string_tracing (struct target_ops
*self
)
11685 return packet_support (PACKET_tracenz_feature
) == PACKET_ENABLE
;
11689 remote_can_run_breakpoint_commands (struct target_ops
*self
)
11691 return packet_support (PACKET_BreakpointCommands
) == PACKET_ENABLE
;
11695 remote_trace_init (struct target_ops
*self
)
11698 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11699 if (strcmp (target_buf
, "OK") != 0)
11700 error (_("Target does not support this command."));
11703 static void free_actions_list (char **actions_list
);
11704 static void free_actions_list_cleanup_wrapper (void *);
11706 free_actions_list_cleanup_wrapper (void *al
)
11708 free_actions_list ((char **) al
);
11712 free_actions_list (char **actions_list
)
11716 if (actions_list
== 0)
11719 for (ndx
= 0; actions_list
[ndx
]; ndx
++)
11720 xfree (actions_list
[ndx
]);
11722 xfree (actions_list
);
11725 /* Recursive routine to walk through command list including loops, and
11726 download packets for each command. */
11729 remote_download_command_source (int num
, ULONGEST addr
,
11730 struct command_line
*cmds
)
11732 struct remote_state
*rs
= get_remote_state ();
11733 struct command_line
*cmd
;
11735 for (cmd
= cmds
; cmd
; cmd
= cmd
->next
)
11737 QUIT
; /* Allow user to bail out with ^C. */
11738 strcpy (rs
->buf
, "QTDPsrc:");
11739 encode_source_string (num
, addr
, "cmd", cmd
->line
,
11740 rs
->buf
+ strlen (rs
->buf
),
11741 rs
->buf_size
- strlen (rs
->buf
));
11743 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11744 if (strcmp (target_buf
, "OK"))
11745 warning (_("Target does not support source download."));
11747 if (cmd
->control_type
== while_control
11748 || cmd
->control_type
== while_stepping_control
)
11750 remote_download_command_source (num
, addr
, *cmd
->body_list
);
11752 QUIT
; /* Allow user to bail out with ^C. */
11753 strcpy (rs
->buf
, "QTDPsrc:");
11754 encode_source_string (num
, addr
, "cmd", "end",
11755 rs
->buf
+ strlen (rs
->buf
),
11756 rs
->buf_size
- strlen (rs
->buf
));
11758 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11759 if (strcmp (target_buf
, "OK"))
11760 warning (_("Target does not support source download."));
11766 remote_download_tracepoint (struct target_ops
*self
, struct bp_location
*loc
)
11768 #define BUF_SIZE 2048
11772 char buf
[BUF_SIZE
];
11773 char **tdp_actions
;
11774 char **stepping_actions
;
11776 struct cleanup
*old_chain
= NULL
;
11777 struct agent_expr
*aexpr
;
11778 struct cleanup
*aexpr_chain
= NULL
;
11780 struct breakpoint
*b
= loc
->owner
;
11781 struct tracepoint
*t
= (struct tracepoint
*) b
;
11783 encode_actions_rsp (loc
, &tdp_actions
, &stepping_actions
);
11784 old_chain
= make_cleanup (free_actions_list_cleanup_wrapper
,
11786 (void) make_cleanup (free_actions_list_cleanup_wrapper
,
11789 tpaddr
= loc
->address
;
11790 sprintf_vma (addrbuf
, tpaddr
);
11791 xsnprintf (buf
, BUF_SIZE
, "QTDP:%x:%s:%c:%lx:%x", b
->number
,
11792 addrbuf
, /* address */
11793 (b
->enable_state
== bp_enabled
? 'E' : 'D'),
11794 t
->step_count
, t
->pass_count
);
11795 /* Fast tracepoints are mostly handled by the target, but we can
11796 tell the target how big of an instruction block should be moved
11798 if (b
->type
== bp_fast_tracepoint
)
11800 /* Only test for support at download time; we may not know
11801 target capabilities at definition time. */
11802 if (remote_supports_fast_tracepoints ())
11804 if (gdbarch_fast_tracepoint_valid_at (loc
->gdbarch
, tpaddr
,
11806 xsnprintf (buf
+ strlen (buf
), BUF_SIZE
- strlen (buf
), ":F%x",
11807 gdb_insn_length (loc
->gdbarch
, tpaddr
));
11809 /* If it passed validation at definition but fails now,
11810 something is very wrong. */
11811 internal_error (__FILE__
, __LINE__
,
11812 _("Fast tracepoint not "
11813 "valid during download"));
11816 /* Fast tracepoints are functionally identical to regular
11817 tracepoints, so don't take lack of support as a reason to
11818 give up on the trace run. */
11819 warning (_("Target does not support fast tracepoints, "
11820 "downloading %d as regular tracepoint"), b
->number
);
11822 else if (b
->type
== bp_static_tracepoint
)
11824 /* Only test for support at download time; we may not know
11825 target capabilities at definition time. */
11826 if (remote_supports_static_tracepoints ())
11828 struct static_tracepoint_marker marker
;
11830 if (target_static_tracepoint_marker_at (tpaddr
, &marker
))
11831 strcat (buf
, ":S");
11833 error (_("Static tracepoint not valid during download"));
11836 /* Fast tracepoints are functionally identical to regular
11837 tracepoints, so don't take lack of support as a reason
11838 to give up on the trace run. */
11839 error (_("Target does not support static tracepoints"));
11841 /* If the tracepoint has a conditional, make it into an agent
11842 expression and append to the definition. */
11845 /* Only test support at download time, we may not know target
11846 capabilities at definition time. */
11847 if (remote_supports_cond_tracepoints ())
11849 aexpr
= gen_eval_for_expr (tpaddr
, loc
->cond
);
11850 aexpr_chain
= make_cleanup_free_agent_expr (aexpr
);
11851 xsnprintf (buf
+ strlen (buf
), BUF_SIZE
- strlen (buf
), ":X%x,",
11853 pkt
= buf
+ strlen (buf
);
11854 for (ndx
= 0; ndx
< aexpr
->len
; ++ndx
)
11855 pkt
= pack_hex_byte (pkt
, aexpr
->buf
[ndx
]);
11857 do_cleanups (aexpr_chain
);
11860 warning (_("Target does not support conditional tracepoints, "
11861 "ignoring tp %d cond"), b
->number
);
11864 if (b
->commands
|| *default_collect
)
11867 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11868 if (strcmp (target_buf
, "OK"))
11869 error (_("Target does not support tracepoints."));
11871 /* do_single_steps (t); */
11874 for (ndx
= 0; tdp_actions
[ndx
]; ndx
++)
11876 QUIT
; /* Allow user to bail out with ^C. */
11877 xsnprintf (buf
, BUF_SIZE
, "QTDP:-%x:%s:%s%c",
11878 b
->number
, addrbuf
, /* address */
11880 ((tdp_actions
[ndx
+ 1] || stepping_actions
)
11883 remote_get_noisy_reply (&target_buf
,
11885 if (strcmp (target_buf
, "OK"))
11886 error (_("Error on target while setting tracepoints."));
11889 if (stepping_actions
)
11891 for (ndx
= 0; stepping_actions
[ndx
]; ndx
++)
11893 QUIT
; /* Allow user to bail out with ^C. */
11894 xsnprintf (buf
, BUF_SIZE
, "QTDP:-%x:%s:%s%s%s",
11895 b
->number
, addrbuf
, /* address */
11896 ((ndx
== 0) ? "S" : ""),
11897 stepping_actions
[ndx
],
11898 (stepping_actions
[ndx
+ 1] ? "-" : ""));
11900 remote_get_noisy_reply (&target_buf
,
11902 if (strcmp (target_buf
, "OK"))
11903 error (_("Error on target while setting tracepoints."));
11907 if (packet_support (PACKET_TracepointSource
) == PACKET_ENABLE
)
11909 if (b
->location
!= NULL
)
11911 strcpy (buf
, "QTDPsrc:");
11912 encode_source_string (b
->number
, loc
->address
, "at",
11913 event_location_to_string (b
->location
),
11914 buf
+ strlen (buf
), 2048 - strlen (buf
));
11916 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11917 if (strcmp (target_buf
, "OK"))
11918 warning (_("Target does not support source download."));
11920 if (b
->cond_string
)
11922 strcpy (buf
, "QTDPsrc:");
11923 encode_source_string (b
->number
, loc
->address
,
11924 "cond", b
->cond_string
, buf
+ strlen (buf
),
11925 2048 - strlen (buf
));
11927 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11928 if (strcmp (target_buf
, "OK"))
11929 warning (_("Target does not support source download."));
11931 remote_download_command_source (b
->number
, loc
->address
,
11932 breakpoint_commands (b
));
11935 do_cleanups (old_chain
);
11939 remote_can_download_tracepoint (struct target_ops
*self
)
11941 struct remote_state
*rs
= get_remote_state ();
11942 struct trace_status
*ts
;
11945 /* Don't try to install tracepoints until we've relocated our
11946 symbols, and fetched and merged the target's tracepoint list with
11948 if (rs
->starting_up
)
11951 ts
= current_trace_status ();
11952 status
= remote_get_trace_status (self
, ts
);
11954 if (status
== -1 || !ts
->running_known
|| !ts
->running
)
11957 /* If we are in a tracing experiment, but remote stub doesn't support
11958 installing tracepoint in trace, we have to return. */
11959 if (!remote_supports_install_in_trace ())
11967 remote_download_trace_state_variable (struct target_ops
*self
,
11968 struct trace_state_variable
*tsv
)
11970 struct remote_state
*rs
= get_remote_state ();
11973 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTDV:%x:%s:%x:",
11974 tsv
->number
, phex ((ULONGEST
) tsv
->initial_value
, 8),
11976 p
= rs
->buf
+ strlen (rs
->buf
);
11977 if ((p
- rs
->buf
) + strlen (tsv
->name
) * 2 >= get_remote_packet_size ())
11978 error (_("Trace state variable name too long for tsv definition packet"));
11979 p
+= 2 * bin2hex ((gdb_byte
*) (tsv
->name
), p
, strlen (tsv
->name
));
11982 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11983 if (*target_buf
== '\0')
11984 error (_("Target does not support this command."));
11985 if (strcmp (target_buf
, "OK") != 0)
11986 error (_("Error on target while downloading trace state variable."));
11990 remote_enable_tracepoint (struct target_ops
*self
,
11991 struct bp_location
*location
)
11993 struct remote_state
*rs
= get_remote_state ();
11996 sprintf_vma (addr_buf
, location
->address
);
11997 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTEnable:%x:%s",
11998 location
->owner
->number
, addr_buf
);
12000 remote_get_noisy_reply (&rs
->buf
, &rs
->buf_size
);
12001 if (*rs
->buf
== '\0')
12002 error (_("Target does not support enabling tracepoints while a trace run is ongoing."));
12003 if (strcmp (rs
->buf
, "OK") != 0)
12004 error (_("Error on target while enabling tracepoint."));
12008 remote_disable_tracepoint (struct target_ops
*self
,
12009 struct bp_location
*location
)
12011 struct remote_state
*rs
= get_remote_state ();
12014 sprintf_vma (addr_buf
, location
->address
);
12015 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTDisable:%x:%s",
12016 location
->owner
->number
, addr_buf
);
12018 remote_get_noisy_reply (&rs
->buf
, &rs
->buf_size
);
12019 if (*rs
->buf
== '\0')
12020 error (_("Target does not support disabling tracepoints while a trace run is ongoing."));
12021 if (strcmp (rs
->buf
, "OK") != 0)
12022 error (_("Error on target while disabling tracepoint."));
12026 remote_trace_set_readonly_regions (struct target_ops
*self
)
12030 bfd_size_type size
;
12036 return; /* No information to give. */
12038 strcpy (target_buf
, "QTro");
12039 offset
= strlen (target_buf
);
12040 for (s
= exec_bfd
->sections
; s
; s
= s
->next
)
12042 char tmp1
[40], tmp2
[40];
12045 if ((s
->flags
& SEC_LOAD
) == 0 ||
12046 /* (s->flags & SEC_CODE) == 0 || */
12047 (s
->flags
& SEC_READONLY
) == 0)
12051 vma
= bfd_get_section_vma (abfd
, s
);
12052 size
= bfd_get_section_size (s
);
12053 sprintf_vma (tmp1
, vma
);
12054 sprintf_vma (tmp2
, vma
+ size
);
12055 sec_length
= 1 + strlen (tmp1
) + 1 + strlen (tmp2
);
12056 if (offset
+ sec_length
+ 1 > target_buf_size
)
12058 if (packet_support (PACKET_qXfer_traceframe_info
) != PACKET_ENABLE
)
12060 Too many sections for read-only sections definition packet."));
12063 xsnprintf (target_buf
+ offset
, target_buf_size
- offset
, ":%s,%s",
12065 offset
+= sec_length
;
12069 putpkt (target_buf
);
12070 getpkt (&target_buf
, &target_buf_size
, 0);
12075 remote_trace_start (struct target_ops
*self
)
12077 putpkt ("QTStart");
12078 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
12079 if (*target_buf
== '\0')
12080 error (_("Target does not support this command."));
12081 if (strcmp (target_buf
, "OK") != 0)
12082 error (_("Bogus reply from target: %s"), target_buf
);
12086 remote_get_trace_status (struct target_ops
*self
, struct trace_status
*ts
)
12088 /* Initialize it just to avoid a GCC false warning. */
12090 /* FIXME we need to get register block size some other way. */
12091 extern int trace_regblock_size
;
12092 enum packet_result result
;
12094 if (packet_support (PACKET_qTStatus
) == PACKET_DISABLE
)
12097 trace_regblock_size
= get_remote_arch_state ()->sizeof_g_packet
;
12099 putpkt ("qTStatus");
12103 p
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
12105 CATCH (ex
, RETURN_MASK_ERROR
)
12107 if (ex
.error
!= TARGET_CLOSE_ERROR
)
12109 exception_fprintf (gdb_stderr
, ex
, "qTStatus: ");
12112 throw_exception (ex
);
12116 result
= packet_ok (p
, &remote_protocol_packets
[PACKET_qTStatus
]);
12118 /* If the remote target doesn't do tracing, flag it. */
12119 if (result
== PACKET_UNKNOWN
)
12122 /* We're working with a live target. */
12123 ts
->filename
= NULL
;
12126 error (_("Bogus trace status reply from target: %s"), target_buf
);
12128 /* Function 'parse_trace_status' sets default value of each field of
12129 'ts' at first, so we don't have to do it here. */
12130 parse_trace_status (p
, ts
);
12132 return ts
->running
;
12136 remote_get_tracepoint_status (struct target_ops
*self
, struct breakpoint
*bp
,
12137 struct uploaded_tp
*utp
)
12139 struct remote_state
*rs
= get_remote_state ();
12141 struct bp_location
*loc
;
12142 struct tracepoint
*tp
= (struct tracepoint
*) bp
;
12143 size_t size
= get_remote_packet_size ();
12147 tp
->base
.hit_count
= 0;
12148 tp
->traceframe_usage
= 0;
12149 for (loc
= tp
->base
.loc
; loc
; loc
= loc
->next
)
12151 /* If the tracepoint was never downloaded, don't go asking for
12153 if (tp
->number_on_target
== 0)
12155 xsnprintf (rs
->buf
, size
, "qTP:%x:%s", tp
->number_on_target
,
12156 phex_nz (loc
->address
, 0));
12158 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
12159 if (reply
&& *reply
)
12162 parse_tracepoint_status (reply
+ 1, bp
, utp
);
12168 utp
->hit_count
= 0;
12169 utp
->traceframe_usage
= 0;
12170 xsnprintf (rs
->buf
, size
, "qTP:%x:%s", utp
->number
,
12171 phex_nz (utp
->addr
, 0));
12173 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
12174 if (reply
&& *reply
)
12177 parse_tracepoint_status (reply
+ 1, bp
, utp
);
12183 remote_trace_stop (struct target_ops
*self
)
12186 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
12187 if (*target_buf
== '\0')
12188 error (_("Target does not support this command."));
12189 if (strcmp (target_buf
, "OK") != 0)
12190 error (_("Bogus reply from target: %s"), target_buf
);
12194 remote_trace_find (struct target_ops
*self
,
12195 enum trace_find_type type
, int num
,
12196 CORE_ADDR addr1
, CORE_ADDR addr2
,
12199 struct remote_state
*rs
= get_remote_state ();
12200 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
12202 int target_frameno
= -1, target_tracept
= -1;
12204 /* Lookups other than by absolute frame number depend on the current
12205 trace selected, so make sure it is correct on the remote end
12207 if (type
!= tfind_number
)
12208 set_remote_traceframe ();
12211 strcpy (p
, "QTFrame:");
12212 p
= strchr (p
, '\0');
12216 xsnprintf (p
, endbuf
- p
, "%x", num
);
12219 xsnprintf (p
, endbuf
- p
, "pc:%s", phex_nz (addr1
, 0));
12222 xsnprintf (p
, endbuf
- p
, "tdp:%x", num
);
12225 xsnprintf (p
, endbuf
- p
, "range:%s:%s", phex_nz (addr1
, 0),
12226 phex_nz (addr2
, 0));
12228 case tfind_outside
:
12229 xsnprintf (p
, endbuf
- p
, "outside:%s:%s", phex_nz (addr1
, 0),
12230 phex_nz (addr2
, 0));
12233 error (_("Unknown trace find type %d"), type
);
12237 reply
= remote_get_noisy_reply (&(rs
->buf
), &rs
->buf_size
);
12238 if (*reply
== '\0')
12239 error (_("Target does not support this command."));
12241 while (reply
&& *reply
)
12246 target_frameno
= (int) strtol (p
, &reply
, 16);
12248 error (_("Unable to parse trace frame number"));
12249 /* Don't update our remote traceframe number cache on failure
12250 to select a remote traceframe. */
12251 if (target_frameno
== -1)
12256 target_tracept
= (int) strtol (p
, &reply
, 16);
12258 error (_("Unable to parse tracepoint number"));
12260 case 'O': /* "OK"? */
12261 if (reply
[1] == 'K' && reply
[2] == '\0')
12264 error (_("Bogus reply from target: %s"), reply
);
12267 error (_("Bogus reply from target: %s"), reply
);
12270 *tpp
= target_tracept
;
12272 rs
->remote_traceframe_number
= target_frameno
;
12273 return target_frameno
;
12277 remote_get_trace_state_variable_value (struct target_ops
*self
,
12278 int tsvnum
, LONGEST
*val
)
12280 struct remote_state
*rs
= get_remote_state ();
12284 set_remote_traceframe ();
12286 xsnprintf (rs
->buf
, get_remote_packet_size (), "qTV:%x", tsvnum
);
12288 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
12289 if (reply
&& *reply
)
12293 unpack_varlen_hex (reply
+ 1, &uval
);
12294 *val
= (LONGEST
) uval
;
12302 remote_save_trace_data (struct target_ops
*self
, const char *filename
)
12304 struct remote_state
*rs
= get_remote_state ();
12308 strcpy (p
, "QTSave:");
12310 if ((p
- rs
->buf
) + strlen (filename
) * 2 >= get_remote_packet_size ())
12311 error (_("Remote file name too long for trace save packet"));
12312 p
+= 2 * bin2hex ((gdb_byte
*) filename
, p
, strlen (filename
));
12315 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
12316 if (*reply
== '\0')
12317 error (_("Target does not support this command."));
12318 if (strcmp (reply
, "OK") != 0)
12319 error (_("Bogus reply from target: %s"), reply
);
12323 /* This is basically a memory transfer, but needs to be its own packet
12324 because we don't know how the target actually organizes its trace
12325 memory, plus we want to be able to ask for as much as possible, but
12326 not be unhappy if we don't get as much as we ask for. */
12329 remote_get_raw_trace_data (struct target_ops
*self
,
12330 gdb_byte
*buf
, ULONGEST offset
, LONGEST len
)
12332 struct remote_state
*rs
= get_remote_state ();
12338 strcpy (p
, "qTBuffer:");
12340 p
+= hexnumstr (p
, offset
);
12342 p
+= hexnumstr (p
, len
);
12346 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
12347 if (reply
&& *reply
)
12349 /* 'l' by itself means we're at the end of the buffer and
12350 there is nothing more to get. */
12354 /* Convert the reply into binary. Limit the number of bytes to
12355 convert according to our passed-in buffer size, rather than
12356 what was returned in the packet; if the target is
12357 unexpectedly generous and gives us a bigger reply than we
12358 asked for, we don't want to crash. */
12359 rslt
= hex2bin (target_buf
, buf
, len
);
12363 /* Something went wrong, flag as an error. */
12368 remote_set_disconnected_tracing (struct target_ops
*self
, int val
)
12370 struct remote_state
*rs
= get_remote_state ();
12372 if (packet_support (PACKET_DisconnectedTracing_feature
) == PACKET_ENABLE
)
12376 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTDisconnected:%x", val
);
12378 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
12379 if (*reply
== '\0')
12380 error (_("Target does not support this command."));
12381 if (strcmp (reply
, "OK") != 0)
12382 error (_("Bogus reply from target: %s"), reply
);
12385 warning (_("Target does not support disconnected tracing."));
12389 remote_core_of_thread (struct target_ops
*ops
, ptid_t ptid
)
12391 struct thread_info
*info
= find_thread_ptid (ptid
);
12393 if (info
&& info
->priv
)
12394 return info
->priv
->core
;
12399 remote_set_circular_trace_buffer (struct target_ops
*self
, int val
)
12401 struct remote_state
*rs
= get_remote_state ();
12404 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTBuffer:circular:%x", val
);
12406 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
12407 if (*reply
== '\0')
12408 error (_("Target does not support this command."));
12409 if (strcmp (reply
, "OK") != 0)
12410 error (_("Bogus reply from target: %s"), reply
);
12413 static struct traceframe_info
*
12414 remote_traceframe_info (struct target_ops
*self
)
12418 text
= target_read_stralloc (¤t_target
,
12419 TARGET_OBJECT_TRACEFRAME_INFO
, NULL
);
12422 struct traceframe_info
*info
;
12423 struct cleanup
*back_to
= make_cleanup (xfree
, text
);
12425 info
= parse_traceframe_info (text
);
12426 do_cleanups (back_to
);
12433 /* Handle the qTMinFTPILen packet. Returns the minimum length of
12434 instruction on which a fast tracepoint may be placed. Returns -1
12435 if the packet is not supported, and 0 if the minimum instruction
12436 length is unknown. */
12439 remote_get_min_fast_tracepoint_insn_len (struct target_ops
*self
)
12441 struct remote_state
*rs
= get_remote_state ();
12444 /* If we're not debugging a process yet, the IPA can't be
12446 if (!target_has_execution
)
12449 /* Make sure the remote is pointing at the right process. */
12450 set_general_process ();
12452 xsnprintf (rs
->buf
, get_remote_packet_size (), "qTMinFTPILen");
12454 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
12455 if (*reply
== '\0')
12459 ULONGEST min_insn_len
;
12461 unpack_varlen_hex (reply
, &min_insn_len
);
12463 return (int) min_insn_len
;
12468 remote_set_trace_buffer_size (struct target_ops
*self
, LONGEST val
)
12470 if (packet_support (PACKET_QTBuffer_size
) != PACKET_DISABLE
)
12472 struct remote_state
*rs
= get_remote_state ();
12473 char *buf
= rs
->buf
;
12474 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
12475 enum packet_result result
;
12477 gdb_assert (val
>= 0 || val
== -1);
12478 buf
+= xsnprintf (buf
, endbuf
- buf
, "QTBuffer:size:");
12479 /* Send -1 as literal "-1" to avoid host size dependency. */
12483 buf
+= hexnumstr (buf
, (ULONGEST
) -val
);
12486 buf
+= hexnumstr (buf
, (ULONGEST
) val
);
12489 remote_get_noisy_reply (&rs
->buf
, &rs
->buf_size
);
12490 result
= packet_ok (rs
->buf
,
12491 &remote_protocol_packets
[PACKET_QTBuffer_size
]);
12493 if (result
!= PACKET_OK
)
12494 warning (_("Bogus reply from target: %s"), rs
->buf
);
12499 remote_set_trace_notes (struct target_ops
*self
,
12500 const char *user
, const char *notes
,
12501 const char *stop_notes
)
12503 struct remote_state
*rs
= get_remote_state ();
12505 char *buf
= rs
->buf
;
12506 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
12509 buf
+= xsnprintf (buf
, endbuf
- buf
, "QTNotes:");
12512 buf
+= xsnprintf (buf
, endbuf
- buf
, "user:");
12513 nbytes
= bin2hex ((gdb_byte
*) user
, buf
, strlen (user
));
12519 buf
+= xsnprintf (buf
, endbuf
- buf
, "notes:");
12520 nbytes
= bin2hex ((gdb_byte
*) notes
, buf
, strlen (notes
));
12526 buf
+= xsnprintf (buf
, endbuf
- buf
, "tstop:");
12527 nbytes
= bin2hex ((gdb_byte
*) stop_notes
, buf
, strlen (stop_notes
));
12531 /* Ensure the buffer is terminated. */
12535 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
12536 if (*reply
== '\0')
12539 if (strcmp (reply
, "OK") != 0)
12540 error (_("Bogus reply from target: %s"), reply
);
12546 remote_use_agent (struct target_ops
*self
, int use
)
12548 if (packet_support (PACKET_QAgent
) != PACKET_DISABLE
)
12550 struct remote_state
*rs
= get_remote_state ();
12552 /* If the stub supports QAgent. */
12553 xsnprintf (rs
->buf
, get_remote_packet_size (), "QAgent:%d", use
);
12555 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
12557 if (strcmp (rs
->buf
, "OK") == 0)
12568 remote_can_use_agent (struct target_ops
*self
)
12570 return (packet_support (PACKET_QAgent
) != PACKET_DISABLE
);
12573 struct btrace_target_info
12575 /* The ptid of the traced thread. */
12578 /* The obtained branch trace configuration. */
12579 struct btrace_config conf
;
12582 /* Reset our idea of our target's btrace configuration. */
12585 remote_btrace_reset (void)
12587 struct remote_state
*rs
= get_remote_state ();
12589 memset (&rs
->btrace_config
, 0, sizeof (rs
->btrace_config
));
12592 /* Check whether the target supports branch tracing. */
12595 remote_supports_btrace (struct target_ops
*self
, enum btrace_format format
)
12597 if (packet_support (PACKET_Qbtrace_off
) != PACKET_ENABLE
)
12599 if (packet_support (PACKET_qXfer_btrace
) != PACKET_ENABLE
)
12604 case BTRACE_FORMAT_NONE
:
12607 case BTRACE_FORMAT_BTS
:
12608 return (packet_support (PACKET_Qbtrace_bts
) == PACKET_ENABLE
);
12610 case BTRACE_FORMAT_PT
:
12611 /* The trace is decoded on the host. Even if our target supports it,
12612 we still need to have libipt to decode the trace. */
12613 #if defined (HAVE_LIBIPT)
12614 return (packet_support (PACKET_Qbtrace_pt
) == PACKET_ENABLE
);
12615 #else /* !defined (HAVE_LIBIPT) */
12617 #endif /* !defined (HAVE_LIBIPT) */
12620 internal_error (__FILE__
, __LINE__
, _("Unknown branch trace format"));
12623 /* Synchronize the configuration with the target. */
12626 btrace_sync_conf (const struct btrace_config
*conf
)
12628 struct packet_config
*packet
;
12629 struct remote_state
*rs
;
12630 char *buf
, *pos
, *endbuf
;
12632 rs
= get_remote_state ();
12634 endbuf
= buf
+ get_remote_packet_size ();
12636 packet
= &remote_protocol_packets
[PACKET_Qbtrace_conf_bts_size
];
12637 if (packet_config_support (packet
) == PACKET_ENABLE
12638 && conf
->bts
.size
!= rs
->btrace_config
.bts
.size
)
12641 pos
+= xsnprintf (pos
, endbuf
- pos
, "%s=0x%x", packet
->name
,
12645 getpkt (&buf
, &rs
->buf_size
, 0);
12647 if (packet_ok (buf
, packet
) == PACKET_ERROR
)
12649 if (buf
[0] == 'E' && buf
[1] == '.')
12650 error (_("Failed to configure the BTS buffer size: %s"), buf
+ 2);
12652 error (_("Failed to configure the BTS buffer size."));
12655 rs
->btrace_config
.bts
.size
= conf
->bts
.size
;
12658 packet
= &remote_protocol_packets
[PACKET_Qbtrace_conf_pt_size
];
12659 if (packet_config_support (packet
) == PACKET_ENABLE
12660 && conf
->pt
.size
!= rs
->btrace_config
.pt
.size
)
12663 pos
+= xsnprintf (pos
, endbuf
- pos
, "%s=0x%x", packet
->name
,
12667 getpkt (&buf
, &rs
->buf_size
, 0);
12669 if (packet_ok (buf
, packet
) == PACKET_ERROR
)
12671 if (buf
[0] == 'E' && buf
[1] == '.')
12672 error (_("Failed to configure the trace buffer size: %s"), buf
+ 2);
12674 error (_("Failed to configure the trace buffer size."));
12677 rs
->btrace_config
.pt
.size
= conf
->pt
.size
;
12681 /* Read the current thread's btrace configuration from the target and
12682 store it into CONF. */
12685 btrace_read_config (struct btrace_config
*conf
)
12689 xml
= target_read_stralloc (¤t_target
,
12690 TARGET_OBJECT_BTRACE_CONF
, "");
12693 struct cleanup
*cleanup
;
12695 cleanup
= make_cleanup (xfree
, xml
);
12696 parse_xml_btrace_conf (conf
, xml
);
12697 do_cleanups (cleanup
);
12701 /* Enable branch tracing. */
12703 static struct btrace_target_info
*
12704 remote_enable_btrace (struct target_ops
*self
, ptid_t ptid
,
12705 const struct btrace_config
*conf
)
12707 struct btrace_target_info
*tinfo
= NULL
;
12708 struct packet_config
*packet
= NULL
;
12709 struct remote_state
*rs
= get_remote_state ();
12710 char *buf
= rs
->buf
;
12711 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
12713 switch (conf
->format
)
12715 case BTRACE_FORMAT_BTS
:
12716 packet
= &remote_protocol_packets
[PACKET_Qbtrace_bts
];
12719 case BTRACE_FORMAT_PT
:
12720 packet
= &remote_protocol_packets
[PACKET_Qbtrace_pt
];
12724 if (packet
== NULL
|| packet_config_support (packet
) != PACKET_ENABLE
)
12725 error (_("Target does not support branch tracing."));
12727 btrace_sync_conf (conf
);
12729 set_general_thread (ptid
);
12731 buf
+= xsnprintf (buf
, endbuf
- buf
, "%s", packet
->name
);
12733 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
12735 if (packet_ok (rs
->buf
, packet
) == PACKET_ERROR
)
12737 if (rs
->buf
[0] == 'E' && rs
->buf
[1] == '.')
12738 error (_("Could not enable branch tracing for %s: %s"),
12739 target_pid_to_str (ptid
), rs
->buf
+ 2);
12741 error (_("Could not enable branch tracing for %s."),
12742 target_pid_to_str (ptid
));
12745 tinfo
= XCNEW (struct btrace_target_info
);
12746 tinfo
->ptid
= ptid
;
12748 /* If we fail to read the configuration, we lose some information, but the
12749 tracing itself is not impacted. */
12752 btrace_read_config (&tinfo
->conf
);
12754 CATCH (err
, RETURN_MASK_ERROR
)
12756 if (err
.message
!= NULL
)
12757 warning ("%s", err
.message
);
12764 /* Disable branch tracing. */
12767 remote_disable_btrace (struct target_ops
*self
,
12768 struct btrace_target_info
*tinfo
)
12770 struct packet_config
*packet
= &remote_protocol_packets
[PACKET_Qbtrace_off
];
12771 struct remote_state
*rs
= get_remote_state ();
12772 char *buf
= rs
->buf
;
12773 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
12775 if (packet_config_support (packet
) != PACKET_ENABLE
)
12776 error (_("Target does not support branch tracing."));
12778 set_general_thread (tinfo
->ptid
);
12780 buf
+= xsnprintf (buf
, endbuf
- buf
, "%s", packet
->name
);
12782 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
12784 if (packet_ok (rs
->buf
, packet
) == PACKET_ERROR
)
12786 if (rs
->buf
[0] == 'E' && rs
->buf
[1] == '.')
12787 error (_("Could not disable branch tracing for %s: %s"),
12788 target_pid_to_str (tinfo
->ptid
), rs
->buf
+ 2);
12790 error (_("Could not disable branch tracing for %s."),
12791 target_pid_to_str (tinfo
->ptid
));
12797 /* Teardown branch tracing. */
12800 remote_teardown_btrace (struct target_ops
*self
,
12801 struct btrace_target_info
*tinfo
)
12803 /* We must not talk to the target during teardown. */
12807 /* Read the branch trace. */
12809 static enum btrace_error
12810 remote_read_btrace (struct target_ops
*self
,
12811 struct btrace_data
*btrace
,
12812 struct btrace_target_info
*tinfo
,
12813 enum btrace_read_type type
)
12815 struct packet_config
*packet
= &remote_protocol_packets
[PACKET_qXfer_btrace
];
12816 struct remote_state
*rs
= get_remote_state ();
12817 struct cleanup
*cleanup
;
12821 if (packet_config_support (packet
) != PACKET_ENABLE
)
12822 error (_("Target does not support branch tracing."));
12824 #if !defined(HAVE_LIBEXPAT)
12825 error (_("Cannot process branch tracing result. XML parsing not supported."));
12830 case BTRACE_READ_ALL
:
12833 case BTRACE_READ_NEW
:
12836 case BTRACE_READ_DELTA
:
12840 internal_error (__FILE__
, __LINE__
,
12841 _("Bad branch tracing read type: %u."),
12842 (unsigned int) type
);
12845 xml
= target_read_stralloc (¤t_target
,
12846 TARGET_OBJECT_BTRACE
, annex
);
12848 return BTRACE_ERR_UNKNOWN
;
12850 cleanup
= make_cleanup (xfree
, xml
);
12851 parse_xml_btrace (btrace
, xml
);
12852 do_cleanups (cleanup
);
12854 return BTRACE_ERR_NONE
;
12857 static const struct btrace_config
*
12858 remote_btrace_conf (struct target_ops
*self
,
12859 const struct btrace_target_info
*tinfo
)
12861 return &tinfo
->conf
;
12865 remote_augmented_libraries_svr4_read (struct target_ops
*self
)
12867 return (packet_support (PACKET_augmented_libraries_svr4_read_feature
)
12871 /* Implementation of to_load. */
12874 remote_load (struct target_ops
*self
, const char *name
, int from_tty
)
12876 generic_load (name
, from_tty
);
12879 /* Accepts an integer PID; returns a string representing a file that
12880 can be opened on the remote side to get the symbols for the child
12881 process. Returns NULL if the operation is not supported. */
12884 remote_pid_to_exec_file (struct target_ops
*self
, int pid
)
12886 static char *filename
= NULL
;
12887 struct inferior
*inf
;
12888 char *annex
= NULL
;
12890 if (packet_support (PACKET_qXfer_exec_file
) != PACKET_ENABLE
)
12893 if (filename
!= NULL
)
12896 inf
= find_inferior_pid (pid
);
12898 internal_error (__FILE__
, __LINE__
,
12899 _("not currently attached to process %d"), pid
);
12901 if (!inf
->fake_pid_p
)
12903 const int annex_size
= 9;
12905 annex
= (char *) alloca (annex_size
);
12906 xsnprintf (annex
, annex_size
, "%x", pid
);
12909 filename
= target_read_stralloc (¤t_target
,
12910 TARGET_OBJECT_EXEC_FILE
, annex
);
12915 /* Implement the to_can_do_single_step target_ops method. */
12918 remote_can_do_single_step (struct target_ops
*ops
)
12920 /* We can only tell whether target supports single step or not by
12921 supported s and S vCont actions if the stub supports vContSupported
12922 feature. If the stub doesn't support vContSupported feature,
12923 we have conservatively to think target doesn't supports single
12925 if (packet_support (PACKET_vContSupported
) == PACKET_ENABLE
)
12927 struct remote_state
*rs
= get_remote_state ();
12929 if (packet_support (PACKET_vCont
) == PACKET_SUPPORT_UNKNOWN
)
12930 remote_vcont_probe (rs
);
12932 return rs
->supports_vCont
.s
&& rs
->supports_vCont
.S
;
12939 init_remote_ops (void)
12941 remote_ops
.to_shortname
= "remote";
12942 remote_ops
.to_longname
= "Remote serial target in gdb-specific protocol";
12943 remote_ops
.to_doc
=
12944 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
12945 Specify the serial device it is connected to\n\
12946 (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).";
12947 remote_ops
.to_open
= remote_open
;
12948 remote_ops
.to_close
= remote_close
;
12949 remote_ops
.to_detach
= remote_detach
;
12950 remote_ops
.to_disconnect
= remote_disconnect
;
12951 remote_ops
.to_resume
= remote_resume
;
12952 remote_ops
.to_wait
= remote_wait
;
12953 remote_ops
.to_fetch_registers
= remote_fetch_registers
;
12954 remote_ops
.to_store_registers
= remote_store_registers
;
12955 remote_ops
.to_prepare_to_store
= remote_prepare_to_store
;
12956 remote_ops
.to_files_info
= remote_files_info
;
12957 remote_ops
.to_insert_breakpoint
= remote_insert_breakpoint
;
12958 remote_ops
.to_remove_breakpoint
= remote_remove_breakpoint
;
12959 remote_ops
.to_stopped_by_sw_breakpoint
= remote_stopped_by_sw_breakpoint
;
12960 remote_ops
.to_supports_stopped_by_sw_breakpoint
= remote_supports_stopped_by_sw_breakpoint
;
12961 remote_ops
.to_stopped_by_hw_breakpoint
= remote_stopped_by_hw_breakpoint
;
12962 remote_ops
.to_supports_stopped_by_hw_breakpoint
= remote_supports_stopped_by_hw_breakpoint
;
12963 remote_ops
.to_stopped_by_watchpoint
= remote_stopped_by_watchpoint
;
12964 remote_ops
.to_stopped_data_address
= remote_stopped_data_address
;
12965 remote_ops
.to_watchpoint_addr_within_range
=
12966 remote_watchpoint_addr_within_range
;
12967 remote_ops
.to_can_use_hw_breakpoint
= remote_check_watch_resources
;
12968 remote_ops
.to_insert_hw_breakpoint
= remote_insert_hw_breakpoint
;
12969 remote_ops
.to_remove_hw_breakpoint
= remote_remove_hw_breakpoint
;
12970 remote_ops
.to_region_ok_for_hw_watchpoint
12971 = remote_region_ok_for_hw_watchpoint
;
12972 remote_ops
.to_insert_watchpoint
= remote_insert_watchpoint
;
12973 remote_ops
.to_remove_watchpoint
= remote_remove_watchpoint
;
12974 remote_ops
.to_kill
= remote_kill
;
12975 remote_ops
.to_load
= remote_load
;
12976 remote_ops
.to_mourn_inferior
= remote_mourn
;
12977 remote_ops
.to_pass_signals
= remote_pass_signals
;
12978 remote_ops
.to_program_signals
= remote_program_signals
;
12979 remote_ops
.to_thread_alive
= remote_thread_alive
;
12980 remote_ops
.to_thread_name
= remote_thread_name
;
12981 remote_ops
.to_update_thread_list
= remote_update_thread_list
;
12982 remote_ops
.to_pid_to_str
= remote_pid_to_str
;
12983 remote_ops
.to_extra_thread_info
= remote_threads_extra_info
;
12984 remote_ops
.to_get_ada_task_ptid
= remote_get_ada_task_ptid
;
12985 remote_ops
.to_stop
= remote_stop
;
12986 remote_ops
.to_interrupt
= remote_interrupt
;
12987 remote_ops
.to_check_pending_interrupt
= remote_check_pending_interrupt
;
12988 remote_ops
.to_xfer_partial
= remote_xfer_partial
;
12989 remote_ops
.to_rcmd
= remote_rcmd
;
12990 remote_ops
.to_pid_to_exec_file
= remote_pid_to_exec_file
;
12991 remote_ops
.to_log_command
= serial_log_command
;
12992 remote_ops
.to_get_thread_local_address
= remote_get_thread_local_address
;
12993 remote_ops
.to_stratum
= process_stratum
;
12994 remote_ops
.to_has_all_memory
= default_child_has_all_memory
;
12995 remote_ops
.to_has_memory
= default_child_has_memory
;
12996 remote_ops
.to_has_stack
= default_child_has_stack
;
12997 remote_ops
.to_has_registers
= default_child_has_registers
;
12998 remote_ops
.to_has_execution
= default_child_has_execution
;
12999 remote_ops
.to_has_thread_control
= tc_schedlock
; /* can lock scheduler */
13000 remote_ops
.to_can_execute_reverse
= remote_can_execute_reverse
;
13001 remote_ops
.to_magic
= OPS_MAGIC
;
13002 remote_ops
.to_memory_map
= remote_memory_map
;
13003 remote_ops
.to_flash_erase
= remote_flash_erase
;
13004 remote_ops
.to_flash_done
= remote_flash_done
;
13005 remote_ops
.to_read_description
= remote_read_description
;
13006 remote_ops
.to_search_memory
= remote_search_memory
;
13007 remote_ops
.to_can_async_p
= remote_can_async_p
;
13008 remote_ops
.to_is_async_p
= remote_is_async_p
;
13009 remote_ops
.to_async
= remote_async
;
13010 remote_ops
.to_thread_events
= remote_thread_events
;
13011 remote_ops
.to_can_do_single_step
= remote_can_do_single_step
;
13012 remote_ops
.to_terminal_inferior
= remote_terminal_inferior
;
13013 remote_ops
.to_terminal_ours
= remote_terminal_ours
;
13014 remote_ops
.to_supports_non_stop
= remote_supports_non_stop
;
13015 remote_ops
.to_supports_multi_process
= remote_supports_multi_process
;
13016 remote_ops
.to_supports_disable_randomization
13017 = remote_supports_disable_randomization
;
13018 remote_ops
.to_filesystem_is_local
= remote_filesystem_is_local
;
13019 remote_ops
.to_fileio_open
= remote_hostio_open
;
13020 remote_ops
.to_fileio_pwrite
= remote_hostio_pwrite
;
13021 remote_ops
.to_fileio_pread
= remote_hostio_pread
;
13022 remote_ops
.to_fileio_fstat
= remote_hostio_fstat
;
13023 remote_ops
.to_fileio_close
= remote_hostio_close
;
13024 remote_ops
.to_fileio_unlink
= remote_hostio_unlink
;
13025 remote_ops
.to_fileio_readlink
= remote_hostio_readlink
;
13026 remote_ops
.to_supports_enable_disable_tracepoint
= remote_supports_enable_disable_tracepoint
;
13027 remote_ops
.to_supports_string_tracing
= remote_supports_string_tracing
;
13028 remote_ops
.to_supports_evaluation_of_breakpoint_conditions
= remote_supports_cond_breakpoints
;
13029 remote_ops
.to_can_run_breakpoint_commands
= remote_can_run_breakpoint_commands
;
13030 remote_ops
.to_trace_init
= remote_trace_init
;
13031 remote_ops
.to_download_tracepoint
= remote_download_tracepoint
;
13032 remote_ops
.to_can_download_tracepoint
= remote_can_download_tracepoint
;
13033 remote_ops
.to_download_trace_state_variable
13034 = remote_download_trace_state_variable
;
13035 remote_ops
.to_enable_tracepoint
= remote_enable_tracepoint
;
13036 remote_ops
.to_disable_tracepoint
= remote_disable_tracepoint
;
13037 remote_ops
.to_trace_set_readonly_regions
= remote_trace_set_readonly_regions
;
13038 remote_ops
.to_trace_start
= remote_trace_start
;
13039 remote_ops
.to_get_trace_status
= remote_get_trace_status
;
13040 remote_ops
.to_get_tracepoint_status
= remote_get_tracepoint_status
;
13041 remote_ops
.to_trace_stop
= remote_trace_stop
;
13042 remote_ops
.to_trace_find
= remote_trace_find
;
13043 remote_ops
.to_get_trace_state_variable_value
13044 = remote_get_trace_state_variable_value
;
13045 remote_ops
.to_save_trace_data
= remote_save_trace_data
;
13046 remote_ops
.to_upload_tracepoints
= remote_upload_tracepoints
;
13047 remote_ops
.to_upload_trace_state_variables
13048 = remote_upload_trace_state_variables
;
13049 remote_ops
.to_get_raw_trace_data
= remote_get_raw_trace_data
;
13050 remote_ops
.to_get_min_fast_tracepoint_insn_len
= remote_get_min_fast_tracepoint_insn_len
;
13051 remote_ops
.to_set_disconnected_tracing
= remote_set_disconnected_tracing
;
13052 remote_ops
.to_set_circular_trace_buffer
= remote_set_circular_trace_buffer
;
13053 remote_ops
.to_set_trace_buffer_size
= remote_set_trace_buffer_size
;
13054 remote_ops
.to_set_trace_notes
= remote_set_trace_notes
;
13055 remote_ops
.to_core_of_thread
= remote_core_of_thread
;
13056 remote_ops
.to_verify_memory
= remote_verify_memory
;
13057 remote_ops
.to_get_tib_address
= remote_get_tib_address
;
13058 remote_ops
.to_set_permissions
= remote_set_permissions
;
13059 remote_ops
.to_static_tracepoint_marker_at
13060 = remote_static_tracepoint_marker_at
;
13061 remote_ops
.to_static_tracepoint_markers_by_strid
13062 = remote_static_tracepoint_markers_by_strid
;
13063 remote_ops
.to_traceframe_info
= remote_traceframe_info
;
13064 remote_ops
.to_use_agent
= remote_use_agent
;
13065 remote_ops
.to_can_use_agent
= remote_can_use_agent
;
13066 remote_ops
.to_supports_btrace
= remote_supports_btrace
;
13067 remote_ops
.to_enable_btrace
= remote_enable_btrace
;
13068 remote_ops
.to_disable_btrace
= remote_disable_btrace
;
13069 remote_ops
.to_teardown_btrace
= remote_teardown_btrace
;
13070 remote_ops
.to_read_btrace
= remote_read_btrace
;
13071 remote_ops
.to_btrace_conf
= remote_btrace_conf
;
13072 remote_ops
.to_augmented_libraries_svr4_read
=
13073 remote_augmented_libraries_svr4_read
;
13076 /* Set up the extended remote vector by making a copy of the standard
13077 remote vector and adding to it. */
13080 init_extended_remote_ops (void)
13082 extended_remote_ops
= remote_ops
;
13084 extended_remote_ops
.to_shortname
= "extended-remote";
13085 extended_remote_ops
.to_longname
=
13086 "Extended remote serial target in gdb-specific protocol";
13087 extended_remote_ops
.to_doc
=
13088 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
13089 Specify the serial device it is connected to (e.g. /dev/ttya).";
13090 extended_remote_ops
.to_open
= extended_remote_open
;
13091 extended_remote_ops
.to_create_inferior
= extended_remote_create_inferior
;
13092 extended_remote_ops
.to_mourn_inferior
= extended_remote_mourn
;
13093 extended_remote_ops
.to_detach
= extended_remote_detach
;
13094 extended_remote_ops
.to_attach
= extended_remote_attach
;
13095 extended_remote_ops
.to_post_attach
= extended_remote_post_attach
;
13096 extended_remote_ops
.to_kill
= extended_remote_kill
;
13097 extended_remote_ops
.to_supports_disable_randomization
13098 = extended_remote_supports_disable_randomization
;
13099 extended_remote_ops
.to_follow_fork
= remote_follow_fork
;
13100 extended_remote_ops
.to_follow_exec
= remote_follow_exec
;
13101 extended_remote_ops
.to_insert_fork_catchpoint
13102 = remote_insert_fork_catchpoint
;
13103 extended_remote_ops
.to_remove_fork_catchpoint
13104 = remote_remove_fork_catchpoint
;
13105 extended_remote_ops
.to_insert_vfork_catchpoint
13106 = remote_insert_vfork_catchpoint
;
13107 extended_remote_ops
.to_remove_vfork_catchpoint
13108 = remote_remove_vfork_catchpoint
;
13109 extended_remote_ops
.to_insert_exec_catchpoint
13110 = remote_insert_exec_catchpoint
;
13111 extended_remote_ops
.to_remove_exec_catchpoint
13112 = remote_remove_exec_catchpoint
;
13116 remote_can_async_p (struct target_ops
*ops
)
13118 struct remote_state
*rs
= get_remote_state ();
13120 if (!target_async_permitted
)
13121 /* We only enable async when the user specifically asks for it. */
13124 /* We're async whenever the serial device is. */
13125 return serial_can_async_p (rs
->remote_desc
);
13129 remote_is_async_p (struct target_ops
*ops
)
13131 struct remote_state
*rs
= get_remote_state ();
13133 if (!target_async_permitted
)
13134 /* We only enable async when the user specifically asks for it. */
13137 /* We're async whenever the serial device is. */
13138 return serial_is_async_p (rs
->remote_desc
);
13141 /* Pass the SERIAL event on and up to the client. One day this code
13142 will be able to delay notifying the client of an event until the
13143 point where an entire packet has been received. */
13145 static serial_event_ftype remote_async_serial_handler
;
13148 remote_async_serial_handler (struct serial
*scb
, void *context
)
13150 struct remote_state
*rs
= (struct remote_state
*) context
;
13152 /* Don't propogate error information up to the client. Instead let
13153 the client find out about the error by querying the target. */
13154 inferior_event_handler (INF_REG_EVENT
, NULL
);
13158 remote_async_inferior_event_handler (gdb_client_data data
)
13160 inferior_event_handler (INF_REG_EVENT
, NULL
);
13164 remote_async (struct target_ops
*ops
, int enable
)
13166 struct remote_state
*rs
= get_remote_state ();
13170 serial_async (rs
->remote_desc
, remote_async_serial_handler
, rs
);
13172 /* If there are pending events in the stop reply queue tell the
13173 event loop to process them. */
13174 if (!QUEUE_is_empty (stop_reply_p
, stop_reply_queue
))
13175 mark_async_event_handler (remote_async_inferior_event_token
);
13176 /* For simplicity, below we clear the pending events token
13177 without remembering whether it is marked, so here we always
13178 mark it. If there's actually no pending notification to
13179 process, this ends up being a no-op (other than a spurious
13180 event-loop wakeup). */
13181 if (target_is_non_stop_p ())
13182 mark_async_event_handler (rs
->notif_state
->get_pending_events_token
);
13186 serial_async (rs
->remote_desc
, NULL
, NULL
);
13187 /* If the core is disabling async, it doesn't want to be
13188 disturbed with target events. Clear all async event sources
13190 clear_async_event_handler (remote_async_inferior_event_token
);
13191 if (target_is_non_stop_p ())
13192 clear_async_event_handler (rs
->notif_state
->get_pending_events_token
);
13196 /* Implementation of the to_thread_events method. */
13199 remote_thread_events (struct target_ops
*ops
, int enable
)
13201 struct remote_state
*rs
= get_remote_state ();
13202 size_t size
= get_remote_packet_size ();
13205 if (packet_support (PACKET_QThreadEvents
) == PACKET_DISABLE
)
13208 xsnprintf (rs
->buf
, size
, "QThreadEvents:%x", enable
? 1 : 0);
13210 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
13212 switch (packet_ok (rs
->buf
,
13213 &remote_protocol_packets
[PACKET_QThreadEvents
]))
13216 if (strcmp (rs
->buf
, "OK") != 0)
13217 error (_("Remote refused setting thread events: %s"), rs
->buf
);
13220 warning (_("Remote failure reply: %s"), rs
->buf
);
13222 case PACKET_UNKNOWN
:
13228 set_remote_cmd (char *args
, int from_tty
)
13230 help_list (remote_set_cmdlist
, "set remote ", all_commands
, gdb_stdout
);
13234 show_remote_cmd (char *args
, int from_tty
)
13236 /* We can't just use cmd_show_list here, because we want to skip
13237 the redundant "show remote Z-packet" and the legacy aliases. */
13238 struct cleanup
*showlist_chain
;
13239 struct cmd_list_element
*list
= remote_show_cmdlist
;
13240 struct ui_out
*uiout
= current_uiout
;
13242 showlist_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "showlist");
13243 for (; list
!= NULL
; list
= list
->next
)
13244 if (strcmp (list
->name
, "Z-packet") == 0)
13246 else if (list
->type
== not_set_cmd
)
13247 /* Alias commands are exactly like the original, except they
13248 don't have the normal type. */
13252 struct cleanup
*option_chain
13253 = make_cleanup_ui_out_tuple_begin_end (uiout
, "option");
13255 ui_out_field_string (uiout
, "name", list
->name
);
13256 ui_out_text (uiout
, ": ");
13257 if (list
->type
== show_cmd
)
13258 do_show_command ((char *) NULL
, from_tty
, list
);
13260 cmd_func (list
, NULL
, from_tty
);
13261 /* Close the tuple. */
13262 do_cleanups (option_chain
);
13265 /* Close the tuple. */
13266 do_cleanups (showlist_chain
);
13270 /* Function to be called whenever a new objfile (shlib) is detected. */
13272 remote_new_objfile (struct objfile
*objfile
)
13274 struct remote_state
*rs
= get_remote_state ();
13276 if (rs
->remote_desc
!= 0) /* Have a remote connection. */
13277 remote_check_symbols ();
13280 /* Pull all the tracepoints defined on the target and create local
13281 data structures representing them. We don't want to create real
13282 tracepoints yet, we don't want to mess up the user's existing
13286 remote_upload_tracepoints (struct target_ops
*self
, struct uploaded_tp
**utpp
)
13288 struct remote_state
*rs
= get_remote_state ();
13291 /* Ask for a first packet of tracepoint definition. */
13293 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
13295 while (*p
&& *p
!= 'l')
13297 parse_tracepoint_definition (p
, utpp
);
13298 /* Ask for another packet of tracepoint definition. */
13300 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
13307 remote_upload_trace_state_variables (struct target_ops
*self
,
13308 struct uploaded_tsv
**utsvp
)
13310 struct remote_state
*rs
= get_remote_state ();
13313 /* Ask for a first packet of variable definition. */
13315 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
13317 while (*p
&& *p
!= 'l')
13319 parse_tsv_definition (p
, utsvp
);
13320 /* Ask for another packet of variable definition. */
13322 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
13328 /* The "set/show range-stepping" show hook. */
13331 show_range_stepping (struct ui_file
*file
, int from_tty
,
13332 struct cmd_list_element
*c
,
13335 fprintf_filtered (file
,
13336 _("Debugger's willingness to use range stepping "
13337 "is %s.\n"), value
);
13340 /* The "set/show range-stepping" set hook. */
13343 set_range_stepping (char *ignore_args
, int from_tty
,
13344 struct cmd_list_element
*c
)
13346 struct remote_state
*rs
= get_remote_state ();
13348 /* Whene enabling, check whether range stepping is actually
13349 supported by the target, and warn if not. */
13350 if (use_range_stepping
)
13352 if (rs
->remote_desc
!= NULL
)
13354 if (packet_support (PACKET_vCont
) == PACKET_SUPPORT_UNKNOWN
)
13355 remote_vcont_probe (rs
);
13357 if (packet_support (PACKET_vCont
) == PACKET_ENABLE
13358 && rs
->supports_vCont
.r
)
13362 warning (_("Range stepping is not supported by the current target"));
13367 _initialize_remote (void)
13369 struct remote_state
*rs
;
13370 struct cmd_list_element
*cmd
;
13371 const char *cmd_name
;
13373 /* architecture specific data */
13374 remote_gdbarch_data_handle
=
13375 gdbarch_data_register_post_init (init_remote_state
);
13376 remote_g_packet_data_handle
=
13377 gdbarch_data_register_pre_init (remote_g_packet_data_init
);
13380 = register_program_space_data_with_cleanup (NULL
,
13381 remote_pspace_data_cleanup
);
13383 /* Initialize the per-target state. At the moment there is only one
13384 of these, not one per target. Only one target is active at a
13386 remote_state
= new_remote_state ();
13388 init_remote_ops ();
13389 add_target (&remote_ops
);
13391 init_extended_remote_ops ();
13392 add_target (&extended_remote_ops
);
13394 /* Hook into new objfile notification. */
13395 observer_attach_new_objfile (remote_new_objfile
);
13396 /* We're no longer interested in notification events of an inferior
13398 observer_attach_inferior_exit (discard_pending_stop_replies
);
13400 /* Set up signal handlers. */
13401 async_sigint_remote_token
=
13402 create_async_signal_handler (async_remote_interrupt
, NULL
);
13403 async_sigint_remote_twice_token
=
13404 create_async_signal_handler (async_remote_interrupt_twice
, NULL
);
13407 init_remote_threadtests ();
13410 stop_reply_queue
= QUEUE_alloc (stop_reply_p
, stop_reply_xfree
);
13411 /* set/show remote ... */
13413 add_prefix_cmd ("remote", class_maintenance
, set_remote_cmd
, _("\
13414 Remote protocol specific variables\n\
13415 Configure various remote-protocol specific variables such as\n\
13416 the packets being used"),
13417 &remote_set_cmdlist
, "set remote ",
13418 0 /* allow-unknown */, &setlist
);
13419 add_prefix_cmd ("remote", class_maintenance
, show_remote_cmd
, _("\
13420 Remote protocol specific variables\n\
13421 Configure various remote-protocol specific variables such as\n\
13422 the packets being used"),
13423 &remote_show_cmdlist
, "show remote ",
13424 0 /* allow-unknown */, &showlist
);
13426 add_cmd ("compare-sections", class_obscure
, compare_sections_command
, _("\
13427 Compare section data on target to the exec file.\n\
13428 Argument is a single section name (default: all loaded sections).\n\
13429 To compare only read-only loaded sections, specify the -r option."),
13432 add_cmd ("packet", class_maintenance
, packet_command
, _("\
13433 Send an arbitrary packet to a remote target.\n\
13434 maintenance packet TEXT\n\
13435 If GDB is talking to an inferior via the GDB serial protocol, then\n\
13436 this command sends the string TEXT to the inferior, and displays the\n\
13437 response packet. GDB supplies the initial `$' character, and the\n\
13438 terminating `#' character and checksum."),
13441 add_setshow_boolean_cmd ("remotebreak", no_class
, &remote_break
, _("\
13442 Set whether to send break if interrupted."), _("\
13443 Show whether to send break if interrupted."), _("\
13444 If set, a break, instead of a cntrl-c, is sent to the remote target."),
13445 set_remotebreak
, show_remotebreak
,
13446 &setlist
, &showlist
);
13447 cmd_name
= "remotebreak";
13448 cmd
= lookup_cmd (&cmd_name
, setlist
, "", -1, 1);
13449 deprecate_cmd (cmd
, "set remote interrupt-sequence");
13450 cmd_name
= "remotebreak"; /* needed because lookup_cmd updates the pointer */
13451 cmd
= lookup_cmd (&cmd_name
, showlist
, "", -1, 1);
13452 deprecate_cmd (cmd
, "show remote interrupt-sequence");
13454 add_setshow_enum_cmd ("interrupt-sequence", class_support
,
13455 interrupt_sequence_modes
, &interrupt_sequence_mode
,
13457 Set interrupt sequence to remote target."), _("\
13458 Show interrupt sequence to remote target."), _("\
13459 Valid value is \"Ctrl-C\", \"BREAK\" or \"BREAK-g\". The default is \"Ctrl-C\"."),
13460 NULL
, show_interrupt_sequence
,
13461 &remote_set_cmdlist
,
13462 &remote_show_cmdlist
);
13464 add_setshow_boolean_cmd ("interrupt-on-connect", class_support
,
13465 &interrupt_on_connect
, _("\
13466 Set whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \
13467 Show whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \
13468 If set, interrupt sequence is sent to remote target."),
13470 &remote_set_cmdlist
, &remote_show_cmdlist
);
13472 /* Install commands for configuring memory read/write packets. */
13474 add_cmd ("remotewritesize", no_class
, set_memory_write_packet_size
, _("\
13475 Set the maximum number of bytes per memory write packet (deprecated)."),
13477 add_cmd ("remotewritesize", no_class
, show_memory_write_packet_size
, _("\
13478 Show the maximum number of bytes per memory write packet (deprecated)."),
13480 add_cmd ("memory-write-packet-size", no_class
,
13481 set_memory_write_packet_size
, _("\
13482 Set the maximum number of bytes per memory-write packet.\n\
13483 Specify the number of bytes in a packet or 0 (zero) for the\n\
13484 default packet size. The actual limit is further reduced\n\
13485 dependent on the target. Specify ``fixed'' to disable the\n\
13486 further restriction and ``limit'' to enable that restriction."),
13487 &remote_set_cmdlist
);
13488 add_cmd ("memory-read-packet-size", no_class
,
13489 set_memory_read_packet_size
, _("\
13490 Set the maximum number of bytes per memory-read packet.\n\
13491 Specify the number of bytes in a packet or 0 (zero) for the\n\
13492 default packet size. The actual limit is further reduced\n\
13493 dependent on the target. Specify ``fixed'' to disable the\n\
13494 further restriction and ``limit'' to enable that restriction."),
13495 &remote_set_cmdlist
);
13496 add_cmd ("memory-write-packet-size", no_class
,
13497 show_memory_write_packet_size
,
13498 _("Show the maximum number of bytes per memory-write packet."),
13499 &remote_show_cmdlist
);
13500 add_cmd ("memory-read-packet-size", no_class
,
13501 show_memory_read_packet_size
,
13502 _("Show the maximum number of bytes per memory-read packet."),
13503 &remote_show_cmdlist
);
13505 add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class
,
13506 &remote_hw_watchpoint_limit
, _("\
13507 Set the maximum number of target hardware watchpoints."), _("\
13508 Show the maximum number of target hardware watchpoints."), _("\
13509 Specify a negative limit for unlimited."),
13510 NULL
, NULL
, /* FIXME: i18n: The maximum
13511 number of target hardware
13512 watchpoints is %s. */
13513 &remote_set_cmdlist
, &remote_show_cmdlist
);
13514 add_setshow_zinteger_cmd ("hardware-watchpoint-length-limit", no_class
,
13515 &remote_hw_watchpoint_length_limit
, _("\
13516 Set the maximum length (in bytes) of a target hardware watchpoint."), _("\
13517 Show the maximum length (in bytes) of a target hardware watchpoint."), _("\
13518 Specify a negative limit for unlimited."),
13519 NULL
, NULL
, /* FIXME: i18n: The maximum
13520 length (in bytes) of a target
13521 hardware watchpoint is %s. */
13522 &remote_set_cmdlist
, &remote_show_cmdlist
);
13523 add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class
,
13524 &remote_hw_breakpoint_limit
, _("\
13525 Set the maximum number of target hardware breakpoints."), _("\
13526 Show the maximum number of target hardware breakpoints."), _("\
13527 Specify a negative limit for unlimited."),
13528 NULL
, NULL
, /* FIXME: i18n: The maximum
13529 number of target hardware
13530 breakpoints is %s. */
13531 &remote_set_cmdlist
, &remote_show_cmdlist
);
13533 add_setshow_zuinteger_cmd ("remoteaddresssize", class_obscure
,
13534 &remote_address_size
, _("\
13535 Set the maximum size of the address (in bits) in a memory packet."), _("\
13536 Show the maximum size of the address (in bits) in a memory packet."), NULL
,
13538 NULL
, /* FIXME: i18n: */
13539 &setlist
, &showlist
);
13541 init_all_packet_configs ();
13543 add_packet_config_cmd (&remote_protocol_packets
[PACKET_X
],
13544 "X", "binary-download", 1);
13546 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vCont
],
13547 "vCont", "verbose-resume", 0);
13549 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QPassSignals
],
13550 "QPassSignals", "pass-signals", 0);
13552 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QProgramSignals
],
13553 "QProgramSignals", "program-signals", 0);
13555 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSymbol
],
13556 "qSymbol", "symbol-lookup", 0);
13558 add_packet_config_cmd (&remote_protocol_packets
[PACKET_P
],
13559 "P", "set-register", 1);
13561 add_packet_config_cmd (&remote_protocol_packets
[PACKET_p
],
13562 "p", "fetch-register", 1);
13564 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z0
],
13565 "Z0", "software-breakpoint", 0);
13567 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z1
],
13568 "Z1", "hardware-breakpoint", 0);
13570 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z2
],
13571 "Z2", "write-watchpoint", 0);
13573 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z3
],
13574 "Z3", "read-watchpoint", 0);
13576 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z4
],
13577 "Z4", "access-watchpoint", 0);
13579 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_auxv
],
13580 "qXfer:auxv:read", "read-aux-vector", 0);
13582 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_exec_file
],
13583 "qXfer:exec-file:read", "pid-to-exec-file", 0);
13585 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_features
],
13586 "qXfer:features:read", "target-features", 0);
13588 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_libraries
],
13589 "qXfer:libraries:read", "library-info", 0);
13591 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_libraries_svr4
],
13592 "qXfer:libraries-svr4:read", "library-info-svr4", 0);
13594 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_memory_map
],
13595 "qXfer:memory-map:read", "memory-map", 0);
13597 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_spu_read
],
13598 "qXfer:spu:read", "read-spu-object", 0);
13600 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_spu_write
],
13601 "qXfer:spu:write", "write-spu-object", 0);
13603 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_osdata
],
13604 "qXfer:osdata:read", "osdata", 0);
13606 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_threads
],
13607 "qXfer:threads:read", "threads", 0);
13609 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_siginfo_read
],
13610 "qXfer:siginfo:read", "read-siginfo-object", 0);
13612 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_siginfo_write
],
13613 "qXfer:siginfo:write", "write-siginfo-object", 0);
13615 add_packet_config_cmd
13616 (&remote_protocol_packets
[PACKET_qXfer_traceframe_info
],
13617 "qXfer:traceframe-info:read", "traceframe-info", 0);
13619 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_uib
],
13620 "qXfer:uib:read", "unwind-info-block", 0);
13622 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qGetTLSAddr
],
13623 "qGetTLSAddr", "get-thread-local-storage-address",
13626 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qGetTIBAddr
],
13627 "qGetTIBAddr", "get-thread-information-block-address",
13630 add_packet_config_cmd (&remote_protocol_packets
[PACKET_bc
],
13631 "bc", "reverse-continue", 0);
13633 add_packet_config_cmd (&remote_protocol_packets
[PACKET_bs
],
13634 "bs", "reverse-step", 0);
13636 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSupported
],
13637 "qSupported", "supported-packets", 0);
13639 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSearch_memory
],
13640 "qSearch:memory", "search-memory", 0);
13642 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qTStatus
],
13643 "qTStatus", "trace-status", 0);
13645 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_setfs
],
13646 "vFile:setfs", "hostio-setfs", 0);
13648 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_open
],
13649 "vFile:open", "hostio-open", 0);
13651 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_pread
],
13652 "vFile:pread", "hostio-pread", 0);
13654 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_pwrite
],
13655 "vFile:pwrite", "hostio-pwrite", 0);
13657 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_close
],
13658 "vFile:close", "hostio-close", 0);
13660 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_unlink
],
13661 "vFile:unlink", "hostio-unlink", 0);
13663 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_readlink
],
13664 "vFile:readlink", "hostio-readlink", 0);
13666 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_fstat
],
13667 "vFile:fstat", "hostio-fstat", 0);
13669 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vAttach
],
13670 "vAttach", "attach", 0);
13672 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vRun
],
13675 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QStartNoAckMode
],
13676 "QStartNoAckMode", "noack", 0);
13678 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vKill
],
13679 "vKill", "kill", 0);
13681 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qAttached
],
13682 "qAttached", "query-attached", 0);
13684 add_packet_config_cmd (&remote_protocol_packets
[PACKET_ConditionalTracepoints
],
13685 "ConditionalTracepoints",
13686 "conditional-tracepoints", 0);
13688 add_packet_config_cmd (&remote_protocol_packets
[PACKET_ConditionalBreakpoints
],
13689 "ConditionalBreakpoints",
13690 "conditional-breakpoints", 0);
13692 add_packet_config_cmd (&remote_protocol_packets
[PACKET_BreakpointCommands
],
13693 "BreakpointCommands",
13694 "breakpoint-commands", 0);
13696 add_packet_config_cmd (&remote_protocol_packets
[PACKET_FastTracepoints
],
13697 "FastTracepoints", "fast-tracepoints", 0);
13699 add_packet_config_cmd (&remote_protocol_packets
[PACKET_TracepointSource
],
13700 "TracepointSource", "TracepointSource", 0);
13702 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QAllow
],
13703 "QAllow", "allow", 0);
13705 add_packet_config_cmd (&remote_protocol_packets
[PACKET_StaticTracepoints
],
13706 "StaticTracepoints", "static-tracepoints", 0);
13708 add_packet_config_cmd (&remote_protocol_packets
[PACKET_InstallInTrace
],
13709 "InstallInTrace", "install-in-trace", 0);
13711 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_statictrace_read
],
13712 "qXfer:statictrace:read", "read-sdata-object", 0);
13714 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_fdpic
],
13715 "qXfer:fdpic:read", "read-fdpic-loadmap", 0);
13717 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QDisableRandomization
],
13718 "QDisableRandomization", "disable-randomization", 0);
13720 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QAgent
],
13721 "QAgent", "agent", 0);
13723 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QTBuffer_size
],
13724 "QTBuffer:size", "trace-buffer-size", 0);
13726 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Qbtrace_off
],
13727 "Qbtrace:off", "disable-btrace", 0);
13729 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Qbtrace_bts
],
13730 "Qbtrace:bts", "enable-btrace-bts", 0);
13732 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Qbtrace_pt
],
13733 "Qbtrace:pt", "enable-btrace-pt", 0);
13735 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_btrace
],
13736 "qXfer:btrace", "read-btrace", 0);
13738 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_btrace_conf
],
13739 "qXfer:btrace-conf", "read-btrace-conf", 0);
13741 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Qbtrace_conf_bts_size
],
13742 "Qbtrace-conf:bts:size", "btrace-conf-bts-size", 0);
13744 add_packet_config_cmd (&remote_protocol_packets
[PACKET_multiprocess_feature
],
13745 "multiprocess-feature", "multiprocess-feature", 0);
13747 add_packet_config_cmd (&remote_protocol_packets
[PACKET_swbreak_feature
],
13748 "swbreak-feature", "swbreak-feature", 0);
13750 add_packet_config_cmd (&remote_protocol_packets
[PACKET_hwbreak_feature
],
13751 "hwbreak-feature", "hwbreak-feature", 0);
13753 add_packet_config_cmd (&remote_protocol_packets
[PACKET_fork_event_feature
],
13754 "fork-event-feature", "fork-event-feature", 0);
13756 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vfork_event_feature
],
13757 "vfork-event-feature", "vfork-event-feature", 0);
13759 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Qbtrace_conf_pt_size
],
13760 "Qbtrace-conf:pt:size", "btrace-conf-pt-size", 0);
13762 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vContSupported
],
13763 "vContSupported", "verbose-resume-supported", 0);
13765 add_packet_config_cmd (&remote_protocol_packets
[PACKET_exec_event_feature
],
13766 "exec-event-feature", "exec-event-feature", 0);
13768 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vCtrlC
],
13769 "vCtrlC", "ctrl-c", 0);
13771 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QThreadEvents
],
13772 "QThreadEvents", "thread-events", 0);
13774 add_packet_config_cmd (&remote_protocol_packets
[PACKET_no_resumed
],
13775 "N stop reply", "no-resumed-stop-reply", 0);
13777 /* Assert that we've registered "set remote foo-packet" commands
13778 for all packet configs. */
13782 for (i
= 0; i
< PACKET_MAX
; i
++)
13784 /* Ideally all configs would have a command associated. Some
13785 still don't though. */
13790 case PACKET_QNonStop
:
13791 case PACKET_EnableDisableTracepoints_feature
:
13792 case PACKET_tracenz_feature
:
13793 case PACKET_DisconnectedTracing_feature
:
13794 case PACKET_augmented_libraries_svr4_read_feature
:
13796 /* Additions to this list need to be well justified:
13797 pre-existing packets are OK; new packets are not. */
13805 /* This catches both forgetting to add a config command, and
13806 forgetting to remove a packet from the exception list. */
13807 gdb_assert (excepted
== (remote_protocol_packets
[i
].name
== NULL
));
13811 /* Keep the old ``set remote Z-packet ...'' working. Each individual
13812 Z sub-packet has its own set and show commands, but users may
13813 have sets to this variable in their .gdbinit files (or in their
13815 add_setshow_auto_boolean_cmd ("Z-packet", class_obscure
,
13816 &remote_Z_packet_detect
, _("\
13817 Set use of remote protocol `Z' packets"), _("\
13818 Show use of remote protocol `Z' packets "), _("\
13819 When set, GDB will attempt to use the remote breakpoint and watchpoint\n\
13821 set_remote_protocol_Z_packet_cmd
,
13822 show_remote_protocol_Z_packet_cmd
,
13823 /* FIXME: i18n: Use of remote protocol
13824 `Z' packets is %s. */
13825 &remote_set_cmdlist
, &remote_show_cmdlist
);
13827 add_prefix_cmd ("remote", class_files
, remote_command
, _("\
13828 Manipulate files on the remote system\n\
13829 Transfer files to and from the remote target system."),
13830 &remote_cmdlist
, "remote ",
13831 0 /* allow-unknown */, &cmdlist
);
13833 add_cmd ("put", class_files
, remote_put_command
,
13834 _("Copy a local file to the remote system."),
13837 add_cmd ("get", class_files
, remote_get_command
,
13838 _("Copy a remote file to the local system."),
13841 add_cmd ("delete", class_files
, remote_delete_command
,
13842 _("Delete a remote file."),
13845 add_setshow_string_noescape_cmd ("exec-file", class_files
,
13846 &remote_exec_file_var
, _("\
13847 Set the remote pathname for \"run\""), _("\
13848 Show the remote pathname for \"run\""), NULL
,
13849 set_remote_exec_file
,
13850 show_remote_exec_file
,
13851 &remote_set_cmdlist
,
13852 &remote_show_cmdlist
);
13854 add_setshow_boolean_cmd ("range-stepping", class_run
,
13855 &use_range_stepping
, _("\
13856 Enable or disable range stepping."), _("\
13857 Show whether target-assisted range stepping is enabled."), _("\
13858 If on, and the target supports it, when stepping a source line, GDB\n\
13859 tells the target to step the corresponding range of addresses itself instead\n\
13860 of issuing multiple single-steps. This speeds up source level\n\
13861 stepping. If off, GDB always issues single-steps, even if range\n\
13862 stepping is supported by the target. The default is on."),
13863 set_range_stepping
,
13864 show_range_stepping
,
13868 /* Eventually initialize fileio. See fileio.c */
13869 initialize_remote_fileio (remote_set_cmdlist
, remote_show_cmdlist
);
13871 /* Take advantage of the fact that the TID field is not used, to tag
13872 special ptids with it set to != 0. */
13873 magic_null_ptid
= ptid_build (42000, -1, 1);
13874 not_sent_ptid
= ptid_build (42000, -2, 1);
13875 any_thread_ptid
= ptid_build (42000, 0, 1);
13877 target_buf_size
= 2048;
13878 target_buf
= (char *) xmalloc (target_buf_size
);