1 /* Remote target communications for serial-line targets in custom GDB protocol
3 Copyright (C) 1988-2016 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
20 /* See the GDB User Guide for details of the GDB remote protocol. */
30 /*#include "terminal.h" */
33 #include "gdb-stabs.h"
34 #include "gdbthread.h"
36 #include "remote-notif.h"
41 #include "cli/cli-decode.h"
42 #include "cli/cli-setshow.h"
43 #include "target-descriptions.h"
45 #include "filestuff.h"
50 #include "gdb_sys_time.h"
52 #include "event-loop.h"
53 #include "event-top.h"
59 #include "gdbcore.h" /* for exec_bfd */
61 #include "remote-fileio.h"
62 #include "gdb/fileio.h"
64 #include "xml-support.h"
66 #include "memory-map.h"
68 #include "tracepoint.h"
74 /* Temp hacks for tracepoint encoding migration. */
75 static char *target_buf
;
76 static long target_buf_size
;
78 /* Per-program-space data key. */
79 static const struct program_space_data
*remote_pspace_data
;
81 /* The variable registered as the control variable used by the
82 remote exec-file commands. While the remote exec-file setting is
83 per-program-space, the set/show machinery uses this as the
84 location of the remote exec-file value. */
85 static char *remote_exec_file_var
;
87 /* The size to align memory write packets, when practical. The protocol
88 does not guarantee any alignment, and gdb will generate short
89 writes and unaligned writes, but even as a best-effort attempt this
90 can improve bulk transfers. For instance, if a write is misaligned
91 relative to the target's data bus, the stub may need to make an extra
92 round trip fetching data from the target. This doesn't make a
93 huge difference, but it's easy to do, so we try to be helpful.
95 The alignment chosen is arbitrary; usually data bus width is
96 important here, not the possibly larger cache line size. */
97 enum { REMOTE_ALIGN_WRITES
= 16 };
99 /* Prototypes for local functions. */
100 static int getpkt_sane (char **buf
, long *sizeof_buf
, int forever
);
101 static int getpkt_or_notif_sane (char **buf
, long *sizeof_buf
,
102 int forever
, int *is_notif
);
104 static void remote_files_info (struct target_ops
*ignore
);
106 static void remote_prepare_to_store (struct target_ops
*self
,
107 struct regcache
*regcache
);
109 static void remote_open_1 (const char *, int, struct target_ops
*,
112 static void remote_close (struct target_ops
*self
);
116 static int remote_vkill (int pid
, struct remote_state
*rs
);
118 static void remote_kill_k (void);
120 static void remote_mourn (struct target_ops
*ops
);
122 static void extended_remote_restart (void);
124 static void remote_send (char **buf
, long *sizeof_buf_p
);
126 static int readchar (int timeout
);
128 static void remote_serial_write (const char *str
, int len
);
130 static void remote_kill (struct target_ops
*ops
);
132 static int remote_can_async_p (struct target_ops
*);
134 static int remote_is_async_p (struct target_ops
*);
136 static void remote_async (struct target_ops
*ops
, int enable
);
138 static void remote_thread_events (struct target_ops
*ops
, int enable
);
140 static void interrupt_query (void);
142 static void set_general_thread (struct ptid ptid
);
143 static void set_continue_thread (struct ptid ptid
);
145 static void get_offsets (void);
147 static void skip_frame (void);
149 static long read_frame (char **buf_p
, long *sizeof_buf
);
151 static int hexnumlen (ULONGEST num
);
153 static void init_remote_ops (void);
155 static void init_extended_remote_ops (void);
157 static void remote_stop (struct target_ops
*self
, ptid_t
);
159 static int stubhex (int ch
);
161 static int hexnumstr (char *, ULONGEST
);
163 static int hexnumnstr (char *, ULONGEST
, int);
165 static CORE_ADDR
remote_address_masked (CORE_ADDR
);
167 static void print_packet (const char *);
169 static void compare_sections_command (char *, int);
171 static void packet_command (char *, int);
173 static int stub_unpack_int (char *buff
, int fieldlength
);
175 static ptid_t
remote_current_thread (ptid_t oldptid
);
177 static int putpkt_binary (const char *buf
, int cnt
);
179 static void check_binary_download (CORE_ADDR addr
);
181 struct packet_config
;
183 static void show_packet_config_cmd (struct packet_config
*config
);
185 static void show_remote_protocol_packet_cmd (struct ui_file
*file
,
187 struct cmd_list_element
*c
,
190 static char *write_ptid (char *buf
, const char *endbuf
, ptid_t ptid
);
191 static ptid_t
read_ptid (char *buf
, char **obuf
);
193 static void remote_set_permissions (struct target_ops
*self
);
195 static int remote_get_trace_status (struct target_ops
*self
,
196 struct trace_status
*ts
);
198 static int remote_upload_tracepoints (struct target_ops
*self
,
199 struct uploaded_tp
**utpp
);
201 static int remote_upload_trace_state_variables (struct target_ops
*self
,
202 struct uploaded_tsv
**utsvp
);
204 static void remote_query_supported (void);
206 static void remote_check_symbols (void);
208 void _initialize_remote (void);
211 static void stop_reply_xfree (struct stop_reply
*);
212 static void remote_parse_stop_reply (char *, struct stop_reply
*);
213 static void push_stop_reply (struct stop_reply
*);
214 static void discard_pending_stop_replies_in_queue (struct remote_state
*);
215 static int peek_stop_reply (ptid_t ptid
);
217 struct threads_listing_context
;
218 static void remove_new_fork_children (struct threads_listing_context
*);
220 static void remote_async_inferior_event_handler (gdb_client_data
);
222 static void remote_terminal_ours (struct target_ops
*self
);
224 static int remote_read_description_p (struct target_ops
*target
);
226 static void remote_console_output (char *msg
);
228 static int remote_supports_cond_breakpoints (struct target_ops
*self
);
230 static int remote_can_run_breakpoint_commands (struct target_ops
*self
);
232 static void remote_btrace_reset (void);
234 static int stop_reply_queue_length (void);
236 static void readahead_cache_invalidate (void);
238 static void remote_unpush_and_throw (void);
242 static struct cmd_list_element
*remote_cmdlist
;
244 /* For "set remote" and "show remote". */
246 static struct cmd_list_element
*remote_set_cmdlist
;
247 static struct cmd_list_element
*remote_show_cmdlist
;
249 /* Stub vCont actions support.
251 Each field is a boolean flag indicating whether the stub reports
252 support for the corresponding action. */
254 struct vCont_action_support
269 /* Controls whether GDB is willing to use range stepping. */
271 static int use_range_stepping
= 1;
273 #define OPAQUETHREADBYTES 8
275 /* a 64 bit opaque identifier */
276 typedef unsigned char threadref
[OPAQUETHREADBYTES
];
278 /* About this many threadisds fit in a packet. */
280 #define MAXTHREADLISTRESULTS 32
282 /* Data for the vFile:pread readahead cache. */
284 struct readahead_cache
286 /* The file descriptor for the file that is being cached. -1 if the
290 /* The offset into the file that the cache buffer corresponds
294 /* The buffer holding the cache contents. */
296 /* The buffer's size. We try to read as much as fits into a packet
300 /* Cache hit and miss counters. */
305 /* Description of the remote protocol state for the currently
306 connected target. This is per-target state, and independent of the
307 selected architecture. */
311 /* A buffer to use for incoming packets, and its current size. The
312 buffer is grown dynamically for larger incoming packets.
313 Outgoing packets may also be constructed in this buffer.
314 BUF_SIZE is always at least REMOTE_PACKET_SIZE;
315 REMOTE_PACKET_SIZE should be used to limit the length of outgoing
320 /* True if we're going through initial connection setup (finding out
321 about the remote side's threads, relocating symbols, etc.). */
324 /* If we negotiated packet size explicitly (and thus can bypass
325 heuristics for the largest packet size that will not overflow
326 a buffer in the stub), this will be set to that packet size.
327 Otherwise zero, meaning to use the guessed size. */
328 long explicit_packet_size
;
330 /* remote_wait is normally called when the target is running and
331 waits for a stop reply packet. But sometimes we need to call it
332 when the target is already stopped. We can send a "?" packet
333 and have remote_wait read the response. Or, if we already have
334 the response, we can stash it in BUF and tell remote_wait to
335 skip calling getpkt. This flag is set when BUF contains a
336 stop reply packet and the target is not waiting. */
337 int cached_wait_status
;
339 /* True, if in no ack mode. That is, neither GDB nor the stub will
340 expect acks from each other. The connection is assumed to be
344 /* True if we're connected in extended remote mode. */
347 /* True if we resumed the target and we're waiting for the target to
348 stop. In the mean time, we can't start another command/query.
349 The remote server wouldn't be ready to process it, so we'd
350 timeout waiting for a reply that would never come and eventually
351 we'd close the connection. This can happen in asynchronous mode
352 because we allow GDB commands while the target is running. */
353 int waiting_for_stop_reply
;
355 /* The status of the stub support for the various vCont actions. */
356 struct vCont_action_support supports_vCont
;
358 /* Nonzero if the user has pressed Ctrl-C, but the target hasn't
359 responded to that. */
362 /* True if we saw a Ctrl-C while reading or writing from/to the
363 remote descriptor. At that point it is not safe to send a remote
364 interrupt packet, so we instead remember we saw the Ctrl-C and
365 process it once we're done with sending/receiving the current
366 packet, which should be shortly. If however that takes too long,
367 and the user presses Ctrl-C again, we offer to disconnect. */
368 int got_ctrlc_during_io
;
370 /* Descriptor for I/O to remote machine. Initialize it to NULL so that
371 remote_open knows that we don't have a file open when the program
373 struct serial
*remote_desc
;
375 /* These are the threads which we last sent to the remote system. The
376 TID member will be -1 for all or -2 for not sent yet. */
377 ptid_t general_thread
;
378 ptid_t continue_thread
;
380 /* This is the traceframe which we last selected on the remote system.
381 It will be -1 if no traceframe is selected. */
382 int remote_traceframe_number
;
384 char *last_pass_packet
;
386 /* The last QProgramSignals packet sent to the target. We bypass
387 sending a new program signals list down to the target if the new
388 packet is exactly the same as the last we sent. IOW, we only let
389 the target know about program signals list changes. */
390 char *last_program_signals_packet
;
392 enum gdb_signal last_sent_signal
;
396 /* The execution direction of the last resume we got. */
397 enum exec_direction_kind last_resume_exec_dir
;
399 char *finished_object
;
400 char *finished_annex
;
401 ULONGEST finished_offset
;
403 /* Should we try the 'ThreadInfo' query packet?
405 This variable (NOT available to the user: auto-detect only!)
406 determines whether GDB will use the new, simpler "ThreadInfo"
407 query or the older, more complex syntax for thread queries.
408 This is an auto-detect variable (set to true at each connect,
409 and set to false when the target fails to recognize it). */
410 int use_threadinfo_query
;
411 int use_threadextra_query
;
413 threadref echo_nextthread
;
414 threadref nextthread
;
415 threadref resultthreadlist
[MAXTHREADLISTRESULTS
];
417 /* The state of remote notification. */
418 struct remote_notif_state
*notif_state
;
420 /* The branch trace configuration. */
421 struct btrace_config btrace_config
;
423 /* The argument to the last "vFile:setfs:" packet we sent, used
424 to avoid sending repeated unnecessary "vFile:setfs:" packets.
425 Initialized to -1 to indicate that no "vFile:setfs:" packet
426 has yet been sent. */
429 /* A readahead cache for vFile:pread. Often, reading a binary
430 involves a sequence of small reads. E.g., when parsing an ELF
431 file. A readahead cache helps mostly the case of remote
432 debugging on a connection with higher latency, due to the
433 request/reply nature of the RSP. We only cache data for a single
434 file descriptor at a time. */
435 struct readahead_cache readahead_cache
;
438 /* Private data that we'll store in (struct thread_info)->private. */
439 struct private_thread_info
445 /* Whether the target stopped for a breakpoint/watchpoint. */
446 enum target_stop_reason stop_reason
;
448 /* This is set to the data address of the access causing the target
449 to stop for a watchpoint. */
450 CORE_ADDR watch_data_address
;
454 free_private_thread_info (struct private_thread_info
*info
)
461 /* This data could be associated with a target, but we do not always
462 have access to the current target when we need it, so for now it is
463 static. This will be fine for as long as only one target is in use
465 static struct remote_state
*remote_state
;
467 static struct remote_state
*
468 get_remote_state_raw (void)
473 /* Allocate a new struct remote_state with xmalloc, initialize it, and
476 static struct remote_state
*
477 new_remote_state (void)
479 struct remote_state
*result
= XCNEW (struct remote_state
);
481 /* The default buffer size is unimportant; it will be expanded
482 whenever a larger buffer is needed. */
483 result
->buf_size
= 400;
484 result
->buf
= (char *) xmalloc (result
->buf_size
);
485 result
->remote_traceframe_number
= -1;
486 result
->last_sent_signal
= GDB_SIGNAL_0
;
487 result
->last_resume_exec_dir
= EXEC_FORWARD
;
493 /* Description of the remote protocol for a given architecture. */
497 long offset
; /* Offset into G packet. */
498 long regnum
; /* GDB's internal register number. */
499 LONGEST pnum
; /* Remote protocol register number. */
500 int in_g_packet
; /* Always part of G packet. */
501 /* long size in bytes; == register_size (target_gdbarch (), regnum);
503 /* char *name; == gdbarch_register_name (target_gdbarch (), regnum);
507 struct remote_arch_state
509 /* Description of the remote protocol registers. */
510 long sizeof_g_packet
;
512 /* Description of the remote protocol registers indexed by REGNUM
513 (making an array gdbarch_num_regs in size). */
514 struct packet_reg
*regs
;
516 /* This is the size (in chars) of the first response to the ``g''
517 packet. It is used as a heuristic when determining the maximum
518 size of memory-read and memory-write packets. A target will
519 typically only reserve a buffer large enough to hold the ``g''
520 packet. The size does not include packet overhead (headers and
522 long actual_register_packet_size
;
524 /* This is the maximum size (in chars) of a non read/write packet.
525 It is also used as a cap on the size of read/write packets. */
526 long remote_packet_size
;
529 /* Utility: generate error from an incoming stub packet. */
531 trace_error (char *buf
)
534 return; /* not an error msg */
537 case '1': /* malformed packet error */
538 if (*++buf
== '0') /* general case: */
539 error (_("remote.c: error in outgoing packet."));
541 error (_("remote.c: error in outgoing packet at field #%ld."),
542 strtol (buf
, NULL
, 16));
544 error (_("Target returns error code '%s'."), buf
);
548 /* Utility: wait for reply from stub, while accepting "O" packets. */
550 remote_get_noisy_reply (char **buf_p
,
553 do /* Loop on reply from remote stub. */
557 QUIT
; /* Allow user to bail out with ^C. */
558 getpkt (buf_p
, sizeof_buf
, 0);
562 else if (startswith (buf
, "qRelocInsn:"))
565 CORE_ADDR from
, to
, org_to
;
567 int adjusted_size
= 0;
570 p
= buf
+ strlen ("qRelocInsn:");
571 pp
= unpack_varlen_hex (p
, &ul
);
573 error (_("invalid qRelocInsn packet: %s"), buf
);
577 unpack_varlen_hex (p
, &ul
);
584 gdbarch_relocate_instruction (target_gdbarch (), &to
, from
);
587 CATCH (ex
, RETURN_MASK_ALL
)
589 if (ex
.error
== MEMORY_ERROR
)
591 /* Propagate memory errors silently back to the
592 target. The stub may have limited the range of
593 addresses we can write to, for example. */
597 /* Something unexpectedly bad happened. Be verbose
598 so we can tell what, and propagate the error back
599 to the stub, so it doesn't get stuck waiting for
601 exception_fprintf (gdb_stderr
, ex
,
602 _("warning: relocating instruction: "));
610 adjusted_size
= to
- org_to
;
612 xsnprintf (buf
, *sizeof_buf
, "qRelocInsn:%x", adjusted_size
);
616 else if (buf
[0] == 'O' && buf
[1] != 'K')
617 remote_console_output (buf
+ 1); /* 'O' message from stub */
619 return buf
; /* Here's the actual reply. */
624 /* Handle for retreving the remote protocol data from gdbarch. */
625 static struct gdbarch_data
*remote_gdbarch_data_handle
;
627 static struct remote_arch_state
*
628 get_remote_arch_state (void)
630 gdb_assert (target_gdbarch () != NULL
);
631 return ((struct remote_arch_state
*)
632 gdbarch_data (target_gdbarch (), remote_gdbarch_data_handle
));
635 /* Fetch the global remote target state. */
637 static struct remote_state
*
638 get_remote_state (void)
640 /* Make sure that the remote architecture state has been
641 initialized, because doing so might reallocate rs->buf. Any
642 function which calls getpkt also needs to be mindful of changes
643 to rs->buf, but this call limits the number of places which run
645 get_remote_arch_state ();
647 return get_remote_state_raw ();
650 /* Cleanup routine for the remote module's pspace data. */
653 remote_pspace_data_cleanup (struct program_space
*pspace
, void *arg
)
655 char *remote_exec_file
= (char *) arg
;
657 xfree (remote_exec_file
);
660 /* Fetch the remote exec-file from the current program space. */
663 get_remote_exec_file (void)
665 char *remote_exec_file
;
668 = (char *) program_space_data (current_program_space
,
670 if (remote_exec_file
== NULL
)
673 return remote_exec_file
;
676 /* Set the remote exec file for PSPACE. */
679 set_pspace_remote_exec_file (struct program_space
*pspace
,
680 char *remote_exec_file
)
682 char *old_file
= (char *) program_space_data (pspace
, remote_pspace_data
);
685 set_program_space_data (pspace
, remote_pspace_data
,
686 xstrdup (remote_exec_file
));
689 /* The "set/show remote exec-file" set command hook. */
692 set_remote_exec_file (char *ignored
, int from_tty
,
693 struct cmd_list_element
*c
)
695 gdb_assert (remote_exec_file_var
!= NULL
);
696 set_pspace_remote_exec_file (current_program_space
, remote_exec_file_var
);
699 /* The "set/show remote exec-file" show command hook. */
702 show_remote_exec_file (struct ui_file
*file
, int from_tty
,
703 struct cmd_list_element
*cmd
, const char *value
)
705 fprintf_filtered (file
, "%s\n", remote_exec_file_var
);
709 compare_pnums (const void *lhs_
, const void *rhs_
)
711 const struct packet_reg
* const *lhs
712 = (const struct packet_reg
* const *) lhs_
;
713 const struct packet_reg
* const *rhs
714 = (const struct packet_reg
* const *) rhs_
;
716 if ((*lhs
)->pnum
< (*rhs
)->pnum
)
718 else if ((*lhs
)->pnum
== (*rhs
)->pnum
)
725 map_regcache_remote_table (struct gdbarch
*gdbarch
, struct packet_reg
*regs
)
727 int regnum
, num_remote_regs
, offset
;
728 struct packet_reg
**remote_regs
;
730 for (regnum
= 0; regnum
< gdbarch_num_regs (gdbarch
); regnum
++)
732 struct packet_reg
*r
= ®s
[regnum
];
734 if (register_size (gdbarch
, regnum
) == 0)
735 /* Do not try to fetch zero-sized (placeholder) registers. */
738 r
->pnum
= gdbarch_remote_register_number (gdbarch
, regnum
);
743 /* Define the g/G packet format as the contents of each register
744 with a remote protocol number, in order of ascending protocol
747 remote_regs
= XALLOCAVEC (struct packet_reg
*, gdbarch_num_regs (gdbarch
));
748 for (num_remote_regs
= 0, regnum
= 0;
749 regnum
< gdbarch_num_regs (gdbarch
);
751 if (regs
[regnum
].pnum
!= -1)
752 remote_regs
[num_remote_regs
++] = ®s
[regnum
];
754 qsort (remote_regs
, num_remote_regs
, sizeof (struct packet_reg
*),
757 for (regnum
= 0, offset
= 0; regnum
< num_remote_regs
; regnum
++)
759 remote_regs
[regnum
]->in_g_packet
= 1;
760 remote_regs
[regnum
]->offset
= offset
;
761 offset
+= register_size (gdbarch
, remote_regs
[regnum
]->regnum
);
767 /* Given the architecture described by GDBARCH, return the remote
768 protocol register's number and the register's offset in the g/G
769 packets of GDB register REGNUM, in PNUM and POFFSET respectively.
770 If the target does not have a mapping for REGNUM, return false,
771 otherwise, return true. */
774 remote_register_number_and_offset (struct gdbarch
*gdbarch
, int regnum
,
775 int *pnum
, int *poffset
)
777 struct packet_reg
*regs
;
778 struct cleanup
*old_chain
;
780 gdb_assert (regnum
< gdbarch_num_regs (gdbarch
));
782 regs
= XCNEWVEC (struct packet_reg
, gdbarch_num_regs (gdbarch
));
783 old_chain
= make_cleanup (xfree
, regs
);
785 map_regcache_remote_table (gdbarch
, regs
);
787 *pnum
= regs
[regnum
].pnum
;
788 *poffset
= regs
[regnum
].offset
;
790 do_cleanups (old_chain
);
796 init_remote_state (struct gdbarch
*gdbarch
)
798 struct remote_state
*rs
= get_remote_state_raw ();
799 struct remote_arch_state
*rsa
;
801 rsa
= GDBARCH_OBSTACK_ZALLOC (gdbarch
, struct remote_arch_state
);
803 /* Use the architecture to build a regnum<->pnum table, which will be
804 1:1 unless a feature set specifies otherwise. */
805 rsa
->regs
= GDBARCH_OBSTACK_CALLOC (gdbarch
,
806 gdbarch_num_regs (gdbarch
),
809 /* Record the maximum possible size of the g packet - it may turn out
811 rsa
->sizeof_g_packet
= map_regcache_remote_table (gdbarch
, rsa
->regs
);
813 /* Default maximum number of characters in a packet body. Many
814 remote stubs have a hardwired buffer size of 400 bytes
815 (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used
816 as the maximum packet-size to ensure that the packet and an extra
817 NUL character can always fit in the buffer. This stops GDB
818 trashing stubs that try to squeeze an extra NUL into what is
819 already a full buffer (As of 1999-12-04 that was most stubs). */
820 rsa
->remote_packet_size
= 400 - 1;
822 /* This one is filled in when a ``g'' packet is received. */
823 rsa
->actual_register_packet_size
= 0;
825 /* Should rsa->sizeof_g_packet needs more space than the
826 default, adjust the size accordingly. Remember that each byte is
827 encoded as two characters. 32 is the overhead for the packet
828 header / footer. NOTE: cagney/1999-10-26: I suspect that 8
829 (``$NN:G...#NN'') is a better guess, the below has been padded a
831 if (rsa
->sizeof_g_packet
> ((rsa
->remote_packet_size
- 32) / 2))
832 rsa
->remote_packet_size
= (rsa
->sizeof_g_packet
* 2 + 32);
834 /* Make sure that the packet buffer is plenty big enough for
835 this architecture. */
836 if (rs
->buf_size
< rsa
->remote_packet_size
)
838 rs
->buf_size
= 2 * rsa
->remote_packet_size
;
839 rs
->buf
= (char *) xrealloc (rs
->buf
, rs
->buf_size
);
845 /* Return the current allowed size of a remote packet. This is
846 inferred from the current architecture, and should be used to
847 limit the length of outgoing packets. */
849 get_remote_packet_size (void)
851 struct remote_state
*rs
= get_remote_state ();
852 struct remote_arch_state
*rsa
= get_remote_arch_state ();
854 if (rs
->explicit_packet_size
)
855 return rs
->explicit_packet_size
;
857 return rsa
->remote_packet_size
;
860 static struct packet_reg
*
861 packet_reg_from_regnum (struct remote_arch_state
*rsa
, long regnum
)
863 if (regnum
< 0 && regnum
>= gdbarch_num_regs (target_gdbarch ()))
867 struct packet_reg
*r
= &rsa
->regs
[regnum
];
869 gdb_assert (r
->regnum
== regnum
);
874 static struct packet_reg
*
875 packet_reg_from_pnum (struct remote_arch_state
*rsa
, LONGEST pnum
)
879 for (i
= 0; i
< gdbarch_num_regs (target_gdbarch ()); i
++)
881 struct packet_reg
*r
= &rsa
->regs
[i
];
889 static struct target_ops remote_ops
;
891 static struct target_ops extended_remote_ops
;
893 /* FIXME: cagney/1999-09-23: Even though getpkt was called with
894 ``forever'' still use the normal timeout mechanism. This is
895 currently used by the ASYNC code to guarentee that target reads
896 during the initial connect always time-out. Once getpkt has been
897 modified to return a timeout indication and, in turn
898 remote_wait()/wait_for_inferior() have gained a timeout parameter
900 static int wait_forever_enabled_p
= 1;
902 /* Allow the user to specify what sequence to send to the remote
903 when he requests a program interruption: Although ^C is usually
904 what remote systems expect (this is the default, here), it is
905 sometimes preferable to send a break. On other systems such
906 as the Linux kernel, a break followed by g, which is Magic SysRq g
907 is required in order to interrupt the execution. */
908 const char interrupt_sequence_control_c
[] = "Ctrl-C";
909 const char interrupt_sequence_break
[] = "BREAK";
910 const char interrupt_sequence_break_g
[] = "BREAK-g";
911 static const char *const interrupt_sequence_modes
[] =
913 interrupt_sequence_control_c
,
914 interrupt_sequence_break
,
915 interrupt_sequence_break_g
,
918 static const char *interrupt_sequence_mode
= interrupt_sequence_control_c
;
921 show_interrupt_sequence (struct ui_file
*file
, int from_tty
,
922 struct cmd_list_element
*c
,
925 if (interrupt_sequence_mode
== interrupt_sequence_control_c
)
926 fprintf_filtered (file
,
927 _("Send the ASCII ETX character (Ctrl-c) "
928 "to the remote target to interrupt the "
929 "execution of the program.\n"));
930 else if (interrupt_sequence_mode
== interrupt_sequence_break
)
931 fprintf_filtered (file
,
932 _("send a break signal to the remote target "
933 "to interrupt the execution of the program.\n"));
934 else if (interrupt_sequence_mode
== interrupt_sequence_break_g
)
935 fprintf_filtered (file
,
936 _("Send a break signal and 'g' a.k.a. Magic SysRq g to "
937 "the remote target to interrupt the execution "
938 "of Linux kernel.\n"));
940 internal_error (__FILE__
, __LINE__
,
941 _("Invalid value for interrupt_sequence_mode: %s."),
942 interrupt_sequence_mode
);
945 /* This boolean variable specifies whether interrupt_sequence is sent
946 to the remote target when gdb connects to it.
947 This is mostly needed when you debug the Linux kernel: The Linux kernel
948 expects BREAK g which is Magic SysRq g for connecting gdb. */
949 static int interrupt_on_connect
= 0;
951 /* This variable is used to implement the "set/show remotebreak" commands.
952 Since these commands are now deprecated in favor of "set/show remote
953 interrupt-sequence", it no longer has any effect on the code. */
954 static int remote_break
;
957 set_remotebreak (char *args
, int from_tty
, struct cmd_list_element
*c
)
960 interrupt_sequence_mode
= interrupt_sequence_break
;
962 interrupt_sequence_mode
= interrupt_sequence_control_c
;
966 show_remotebreak (struct ui_file
*file
, int from_tty
,
967 struct cmd_list_element
*c
,
972 /* This variable sets the number of bits in an address that are to be
973 sent in a memory ("M" or "m") packet. Normally, after stripping
974 leading zeros, the entire address would be sent. This variable
975 restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The
976 initial implementation of remote.c restricted the address sent in
977 memory packets to ``host::sizeof long'' bytes - (typically 32
978 bits). Consequently, for 64 bit targets, the upper 32 bits of an
979 address was never sent. Since fixing this bug may cause a break in
980 some remote targets this variable is principly provided to
981 facilitate backward compatibility. */
983 static unsigned int remote_address_size
;
985 /* Temporary to track who currently owns the terminal. See
986 remote_terminal_* for more details. */
988 static int remote_async_terminal_ours_p
;
991 /* User configurable variables for the number of characters in a
992 memory read/write packet. MIN (rsa->remote_packet_size,
993 rsa->sizeof_g_packet) is the default. Some targets need smaller
994 values (fifo overruns, et.al.) and some users need larger values
995 (speed up transfers). The variables ``preferred_*'' (the user
996 request), ``current_*'' (what was actually set) and ``forced_*''
997 (Positive - a soft limit, negative - a hard limit). */
999 struct memory_packet_config
1006 /* The default max memory-write-packet-size. The 16k is historical.
1007 (It came from older GDB's using alloca for buffers and the
1008 knowledge (folklore?) that some hosts don't cope very well with
1009 large alloca calls.) */
1010 #define DEFAULT_MAX_MEMORY_PACKET_SIZE 16384
1012 /* The minimum remote packet size for memory transfers. Ensures we
1013 can write at least one byte. */
1014 #define MIN_MEMORY_PACKET_SIZE 20
1016 /* Compute the current size of a read/write packet. Since this makes
1017 use of ``actual_register_packet_size'' the computation is dynamic. */
1020 get_memory_packet_size (struct memory_packet_config
*config
)
1022 struct remote_state
*rs
= get_remote_state ();
1023 struct remote_arch_state
*rsa
= get_remote_arch_state ();
1026 if (config
->fixed_p
)
1028 if (config
->size
<= 0)
1029 what_they_get
= DEFAULT_MAX_MEMORY_PACKET_SIZE
;
1031 what_they_get
= config
->size
;
1035 what_they_get
= get_remote_packet_size ();
1036 /* Limit the packet to the size specified by the user. */
1037 if (config
->size
> 0
1038 && what_they_get
> config
->size
)
1039 what_they_get
= config
->size
;
1041 /* Limit it to the size of the targets ``g'' response unless we have
1042 permission from the stub to use a larger packet size. */
1043 if (rs
->explicit_packet_size
== 0
1044 && rsa
->actual_register_packet_size
> 0
1045 && what_they_get
> rsa
->actual_register_packet_size
)
1046 what_they_get
= rsa
->actual_register_packet_size
;
1048 if (what_they_get
< MIN_MEMORY_PACKET_SIZE
)
1049 what_they_get
= MIN_MEMORY_PACKET_SIZE
;
1051 /* Make sure there is room in the global buffer for this packet
1052 (including its trailing NUL byte). */
1053 if (rs
->buf_size
< what_they_get
+ 1)
1055 rs
->buf_size
= 2 * what_they_get
;
1056 rs
->buf
= (char *) xrealloc (rs
->buf
, 2 * what_they_get
);
1059 return what_they_get
;
1062 /* Update the size of a read/write packet. If they user wants
1063 something really big then do a sanity check. */
1066 set_memory_packet_size (char *args
, struct memory_packet_config
*config
)
1068 int fixed_p
= config
->fixed_p
;
1069 long size
= config
->size
;
1072 error (_("Argument required (integer, `fixed' or `limited')."));
1073 else if (strcmp (args
, "hard") == 0
1074 || strcmp (args
, "fixed") == 0)
1076 else if (strcmp (args
, "soft") == 0
1077 || strcmp (args
, "limit") == 0)
1083 size
= strtoul (args
, &end
, 0);
1085 error (_("Invalid %s (bad syntax)."), config
->name
);
1087 /* Instead of explicitly capping the size of a packet to or
1088 disallowing it, the user is allowed to set the size to
1089 something arbitrarily large. */
1092 /* So that the query shows the correct value. */
1094 size
= DEFAULT_MAX_MEMORY_PACKET_SIZE
;
1097 if (fixed_p
&& !config
->fixed_p
)
1099 if (! query (_("The target may not be able to correctly handle a %s\n"
1100 "of %ld bytes. Change the packet size? "),
1101 config
->name
, size
))
1102 error (_("Packet size not changed."));
1104 /* Update the config. */
1105 config
->fixed_p
= fixed_p
;
1106 config
->size
= size
;
1110 show_memory_packet_size (struct memory_packet_config
*config
)
1112 printf_filtered (_("The %s is %ld. "), config
->name
, config
->size
);
1113 if (config
->fixed_p
)
1114 printf_filtered (_("Packets are fixed at %ld bytes.\n"),
1115 get_memory_packet_size (config
));
1117 printf_filtered (_("Packets are limited to %ld bytes.\n"),
1118 get_memory_packet_size (config
));
1121 static struct memory_packet_config memory_write_packet_config
=
1123 "memory-write-packet-size",
1127 set_memory_write_packet_size (char *args
, int from_tty
)
1129 set_memory_packet_size (args
, &memory_write_packet_config
);
1133 show_memory_write_packet_size (char *args
, int from_tty
)
1135 show_memory_packet_size (&memory_write_packet_config
);
1139 get_memory_write_packet_size (void)
1141 return get_memory_packet_size (&memory_write_packet_config
);
1144 static struct memory_packet_config memory_read_packet_config
=
1146 "memory-read-packet-size",
1150 set_memory_read_packet_size (char *args
, int from_tty
)
1152 set_memory_packet_size (args
, &memory_read_packet_config
);
1156 show_memory_read_packet_size (char *args
, int from_tty
)
1158 show_memory_packet_size (&memory_read_packet_config
);
1162 get_memory_read_packet_size (void)
1164 long size
= get_memory_packet_size (&memory_read_packet_config
);
1166 /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an
1167 extra buffer size argument before the memory read size can be
1168 increased beyond this. */
1169 if (size
> get_remote_packet_size ())
1170 size
= get_remote_packet_size ();
1175 /* Generic configuration support for packets the stub optionally
1176 supports. Allows the user to specify the use of the packet as well
1177 as allowing GDB to auto-detect support in the remote stub. */
1181 PACKET_SUPPORT_UNKNOWN
= 0,
1186 struct packet_config
1191 /* If auto, GDB auto-detects support for this packet or feature,
1192 either through qSupported, or by trying the packet and looking
1193 at the response. If true, GDB assumes the target supports this
1194 packet. If false, the packet is disabled. Configs that don't
1195 have an associated command always have this set to auto. */
1196 enum auto_boolean detect
;
1198 /* Does the target support this packet? */
1199 enum packet_support support
;
1202 /* Analyze a packet's return value and update the packet config
1212 static enum packet_support
packet_config_support (struct packet_config
*config
);
1213 static enum packet_support
packet_support (int packet
);
1216 show_packet_config_cmd (struct packet_config
*config
)
1218 char *support
= "internal-error";
1220 switch (packet_config_support (config
))
1223 support
= "enabled";
1225 case PACKET_DISABLE
:
1226 support
= "disabled";
1228 case PACKET_SUPPORT_UNKNOWN
:
1229 support
= "unknown";
1232 switch (config
->detect
)
1234 case AUTO_BOOLEAN_AUTO
:
1235 printf_filtered (_("Support for the `%s' packet "
1236 "is auto-detected, currently %s.\n"),
1237 config
->name
, support
);
1239 case AUTO_BOOLEAN_TRUE
:
1240 case AUTO_BOOLEAN_FALSE
:
1241 printf_filtered (_("Support for the `%s' packet is currently %s.\n"),
1242 config
->name
, support
);
1248 add_packet_config_cmd (struct packet_config
*config
, const char *name
,
1249 const char *title
, int legacy
)
1255 config
->name
= name
;
1256 config
->title
= title
;
1257 set_doc
= xstrprintf ("Set use of remote protocol `%s' (%s) packet",
1259 show_doc
= xstrprintf ("Show current use of remote "
1260 "protocol `%s' (%s) packet",
1262 /* set/show TITLE-packet {auto,on,off} */
1263 cmd_name
= xstrprintf ("%s-packet", title
);
1264 add_setshow_auto_boolean_cmd (cmd_name
, class_obscure
,
1265 &config
->detect
, set_doc
,
1266 show_doc
, NULL
, /* help_doc */
1268 show_remote_protocol_packet_cmd
,
1269 &remote_set_cmdlist
, &remote_show_cmdlist
);
1270 /* The command code copies the documentation strings. */
1273 /* set/show remote NAME-packet {auto,on,off} -- legacy. */
1278 legacy_name
= xstrprintf ("%s-packet", name
);
1279 add_alias_cmd (legacy_name
, cmd_name
, class_obscure
, 0,
1280 &remote_set_cmdlist
);
1281 add_alias_cmd (legacy_name
, cmd_name
, class_obscure
, 0,
1282 &remote_show_cmdlist
);
1286 static enum packet_result
1287 packet_check_result (const char *buf
)
1291 /* The stub recognized the packet request. Check that the
1292 operation succeeded. */
1294 && isxdigit (buf
[1]) && isxdigit (buf
[2])
1296 /* "Enn" - definitly an error. */
1297 return PACKET_ERROR
;
1299 /* Always treat "E." as an error. This will be used for
1300 more verbose error messages, such as E.memtypes. */
1301 if (buf
[0] == 'E' && buf
[1] == '.')
1302 return PACKET_ERROR
;
1304 /* The packet may or may not be OK. Just assume it is. */
1308 /* The stub does not support the packet. */
1309 return PACKET_UNKNOWN
;
1312 static enum packet_result
1313 packet_ok (const char *buf
, struct packet_config
*config
)
1315 enum packet_result result
;
1317 if (config
->detect
!= AUTO_BOOLEAN_TRUE
1318 && config
->support
== PACKET_DISABLE
)
1319 internal_error (__FILE__
, __LINE__
,
1320 _("packet_ok: attempt to use a disabled packet"));
1322 result
= packet_check_result (buf
);
1327 /* The stub recognized the packet request. */
1328 if (config
->support
== PACKET_SUPPORT_UNKNOWN
)
1331 fprintf_unfiltered (gdb_stdlog
,
1332 "Packet %s (%s) is supported\n",
1333 config
->name
, config
->title
);
1334 config
->support
= PACKET_ENABLE
;
1337 case PACKET_UNKNOWN
:
1338 /* The stub does not support the packet. */
1339 if (config
->detect
== AUTO_BOOLEAN_AUTO
1340 && config
->support
== PACKET_ENABLE
)
1342 /* If the stub previously indicated that the packet was
1343 supported then there is a protocol error. */
1344 error (_("Protocol error: %s (%s) conflicting enabled responses."),
1345 config
->name
, config
->title
);
1347 else if (config
->detect
== AUTO_BOOLEAN_TRUE
)
1349 /* The user set it wrong. */
1350 error (_("Enabled packet %s (%s) not recognized by stub"),
1351 config
->name
, config
->title
);
1355 fprintf_unfiltered (gdb_stdlog
,
1356 "Packet %s (%s) is NOT supported\n",
1357 config
->name
, config
->title
);
1358 config
->support
= PACKET_DISABLE
;
1379 PACKET_vFile_pwrite
,
1381 PACKET_vFile_unlink
,
1382 PACKET_vFile_readlink
,
1385 PACKET_qXfer_features
,
1386 PACKET_qXfer_exec_file
,
1387 PACKET_qXfer_libraries
,
1388 PACKET_qXfer_libraries_svr4
,
1389 PACKET_qXfer_memory_map
,
1390 PACKET_qXfer_spu_read
,
1391 PACKET_qXfer_spu_write
,
1392 PACKET_qXfer_osdata
,
1393 PACKET_qXfer_threads
,
1394 PACKET_qXfer_statictrace_read
,
1395 PACKET_qXfer_traceframe_info
,
1401 PACKET_QPassSignals
,
1402 PACKET_QCatchSyscalls
,
1403 PACKET_QProgramSignals
,
1405 PACKET_qSearch_memory
,
1408 PACKET_QStartNoAckMode
,
1410 PACKET_qXfer_siginfo_read
,
1411 PACKET_qXfer_siginfo_write
,
1414 /* Support for conditional tracepoints. */
1415 PACKET_ConditionalTracepoints
,
1417 /* Support for target-side breakpoint conditions. */
1418 PACKET_ConditionalBreakpoints
,
1420 /* Support for target-side breakpoint commands. */
1421 PACKET_BreakpointCommands
,
1423 /* Support for fast tracepoints. */
1424 PACKET_FastTracepoints
,
1426 /* Support for static tracepoints. */
1427 PACKET_StaticTracepoints
,
1429 /* Support for installing tracepoints while a trace experiment is
1431 PACKET_InstallInTrace
,
1435 PACKET_TracepointSource
,
1438 PACKET_QDisableRandomization
,
1440 PACKET_QTBuffer_size
,
1444 PACKET_qXfer_btrace
,
1446 /* Support for the QNonStop packet. */
1449 /* Support for the QThreadEvents packet. */
1450 PACKET_QThreadEvents
,
1452 /* Support for multi-process extensions. */
1453 PACKET_multiprocess_feature
,
1455 /* Support for enabling and disabling tracepoints while a trace
1456 experiment is running. */
1457 PACKET_EnableDisableTracepoints_feature
,
1459 /* Support for collecting strings using the tracenz bytecode. */
1460 PACKET_tracenz_feature
,
1462 /* Support for continuing to run a trace experiment while GDB is
1464 PACKET_DisconnectedTracing_feature
,
1466 /* Support for qXfer:libraries-svr4:read with a non-empty annex. */
1467 PACKET_augmented_libraries_svr4_read_feature
,
1469 /* Support for the qXfer:btrace-conf:read packet. */
1470 PACKET_qXfer_btrace_conf
,
1472 /* Support for the Qbtrace-conf:bts:size packet. */
1473 PACKET_Qbtrace_conf_bts_size
,
1475 /* Support for swbreak+ feature. */
1476 PACKET_swbreak_feature
,
1478 /* Support for hwbreak+ feature. */
1479 PACKET_hwbreak_feature
,
1481 /* Support for fork events. */
1482 PACKET_fork_event_feature
,
1484 /* Support for vfork events. */
1485 PACKET_vfork_event_feature
,
1487 /* Support for the Qbtrace-conf:pt:size packet. */
1488 PACKET_Qbtrace_conf_pt_size
,
1490 /* Support for exec events. */
1491 PACKET_exec_event_feature
,
1493 /* Support for query supported vCont actions. */
1494 PACKET_vContSupported
,
1496 /* Support remote CTRL-C. */
1499 /* Support TARGET_WAITKIND_NO_RESUMED. */
1505 static struct packet_config remote_protocol_packets
[PACKET_MAX
];
1507 /* Returns the packet's corresponding "set remote foo-packet" command
1508 state. See struct packet_config for more details. */
1510 static enum auto_boolean
1511 packet_set_cmd_state (int packet
)
1513 return remote_protocol_packets
[packet
].detect
;
1516 /* Returns whether a given packet or feature is supported. This takes
1517 into account the state of the corresponding "set remote foo-packet"
1518 command, which may be used to bypass auto-detection. */
1520 static enum packet_support
1521 packet_config_support (struct packet_config
*config
)
1523 switch (config
->detect
)
1525 case AUTO_BOOLEAN_TRUE
:
1526 return PACKET_ENABLE
;
1527 case AUTO_BOOLEAN_FALSE
:
1528 return PACKET_DISABLE
;
1529 case AUTO_BOOLEAN_AUTO
:
1530 return config
->support
;
1532 gdb_assert_not_reached (_("bad switch"));
1536 /* Same as packet_config_support, but takes the packet's enum value as
1539 static enum packet_support
1540 packet_support (int packet
)
1542 struct packet_config
*config
= &remote_protocol_packets
[packet
];
1544 return packet_config_support (config
);
1548 show_remote_protocol_packet_cmd (struct ui_file
*file
, int from_tty
,
1549 struct cmd_list_element
*c
,
1552 struct packet_config
*packet
;
1554 for (packet
= remote_protocol_packets
;
1555 packet
< &remote_protocol_packets
[PACKET_MAX
];
1558 if (&packet
->detect
== c
->var
)
1560 show_packet_config_cmd (packet
);
1564 internal_error (__FILE__
, __LINE__
, _("Could not find config for %s"),
1568 /* Should we try one of the 'Z' requests? */
1572 Z_PACKET_SOFTWARE_BP
,
1573 Z_PACKET_HARDWARE_BP
,
1580 /* For compatibility with older distributions. Provide a ``set remote
1581 Z-packet ...'' command that updates all the Z packet types. */
1583 static enum auto_boolean remote_Z_packet_detect
;
1586 set_remote_protocol_Z_packet_cmd (char *args
, int from_tty
,
1587 struct cmd_list_element
*c
)
1591 for (i
= 0; i
< NR_Z_PACKET_TYPES
; i
++)
1592 remote_protocol_packets
[PACKET_Z0
+ i
].detect
= remote_Z_packet_detect
;
1596 show_remote_protocol_Z_packet_cmd (struct ui_file
*file
, int from_tty
,
1597 struct cmd_list_element
*c
,
1602 for (i
= 0; i
< NR_Z_PACKET_TYPES
; i
++)
1604 show_packet_config_cmd (&remote_protocol_packets
[PACKET_Z0
+ i
]);
1608 /* Returns true if the multi-process extensions are in effect. */
1611 remote_multi_process_p (struct remote_state
*rs
)
1613 return packet_support (PACKET_multiprocess_feature
) == PACKET_ENABLE
;
1616 /* Returns true if fork events are supported. */
1619 remote_fork_event_p (struct remote_state
*rs
)
1621 return packet_support (PACKET_fork_event_feature
) == PACKET_ENABLE
;
1624 /* Returns true if vfork events are supported. */
1627 remote_vfork_event_p (struct remote_state
*rs
)
1629 return packet_support (PACKET_vfork_event_feature
) == PACKET_ENABLE
;
1632 /* Returns true if exec events are supported. */
1635 remote_exec_event_p (struct remote_state
*rs
)
1637 return packet_support (PACKET_exec_event_feature
) == PACKET_ENABLE
;
1640 /* Insert fork catchpoint target routine. If fork events are enabled
1641 then return success, nothing more to do. */
1644 remote_insert_fork_catchpoint (struct target_ops
*ops
, int pid
)
1646 struct remote_state
*rs
= get_remote_state ();
1648 return !remote_fork_event_p (rs
);
1651 /* Remove fork catchpoint target routine. Nothing to do, just
1655 remote_remove_fork_catchpoint (struct target_ops
*ops
, int pid
)
1660 /* Insert vfork catchpoint target routine. If vfork events are enabled
1661 then return success, nothing more to do. */
1664 remote_insert_vfork_catchpoint (struct target_ops
*ops
, int pid
)
1666 struct remote_state
*rs
= get_remote_state ();
1668 return !remote_vfork_event_p (rs
);
1671 /* Remove vfork catchpoint target routine. Nothing to do, just
1675 remote_remove_vfork_catchpoint (struct target_ops
*ops
, int pid
)
1680 /* Insert exec catchpoint target routine. If exec events are
1681 enabled, just return success. */
1684 remote_insert_exec_catchpoint (struct target_ops
*ops
, int pid
)
1686 struct remote_state
*rs
= get_remote_state ();
1688 return !remote_exec_event_p (rs
);
1691 /* Remove exec catchpoint target routine. Nothing to do, just
1695 remote_remove_exec_catchpoint (struct target_ops
*ops
, int pid
)
1701 /* Asynchronous signal handle registered as event loop source for
1702 when we have pending events ready to be passed to the core. */
1704 static struct async_event_handler
*remote_async_inferior_event_token
;
1708 static ptid_t magic_null_ptid
;
1709 static ptid_t not_sent_ptid
;
1710 static ptid_t any_thread_ptid
;
1712 /* Find out if the stub attached to PID (and hence GDB should offer to
1713 detach instead of killing it when bailing out). */
1716 remote_query_attached (int pid
)
1718 struct remote_state
*rs
= get_remote_state ();
1719 size_t size
= get_remote_packet_size ();
1721 if (packet_support (PACKET_qAttached
) == PACKET_DISABLE
)
1724 if (remote_multi_process_p (rs
))
1725 xsnprintf (rs
->buf
, size
, "qAttached:%x", pid
);
1727 xsnprintf (rs
->buf
, size
, "qAttached");
1730 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1732 switch (packet_ok (rs
->buf
,
1733 &remote_protocol_packets
[PACKET_qAttached
]))
1736 if (strcmp (rs
->buf
, "1") == 0)
1740 warning (_("Remote failure reply: %s"), rs
->buf
);
1742 case PACKET_UNKNOWN
:
1749 /* Add PID to GDB's inferior table. If FAKE_PID_P is true, then PID
1750 has been invented by GDB, instead of reported by the target. Since
1751 we can be connected to a remote system before before knowing about
1752 any inferior, mark the target with execution when we find the first
1753 inferior. If ATTACHED is 1, then we had just attached to this
1754 inferior. If it is 0, then we just created this inferior. If it
1755 is -1, then try querying the remote stub to find out if it had
1756 attached to the inferior or not. If TRY_OPEN_EXEC is true then
1757 attempt to open this inferior's executable as the main executable
1758 if no main executable is open already. */
1760 static struct inferior
*
1761 remote_add_inferior (int fake_pid_p
, int pid
, int attached
,
1764 struct inferior
*inf
;
1766 /* Check whether this process we're learning about is to be
1767 considered attached, or if is to be considered to have been
1768 spawned by the stub. */
1770 attached
= remote_query_attached (pid
);
1772 if (gdbarch_has_global_solist (target_gdbarch ()))
1774 /* If the target shares code across all inferiors, then every
1775 attach adds a new inferior. */
1776 inf
= add_inferior (pid
);
1778 /* ... and every inferior is bound to the same program space.
1779 However, each inferior may still have its own address
1781 inf
->aspace
= maybe_new_address_space ();
1782 inf
->pspace
= current_program_space
;
1786 /* In the traditional debugging scenario, there's a 1-1 match
1787 between program/address spaces. We simply bind the inferior
1788 to the program space's address space. */
1789 inf
= current_inferior ();
1790 inferior_appeared (inf
, pid
);
1793 inf
->attach_flag
= attached
;
1794 inf
->fake_pid_p
= fake_pid_p
;
1796 /* If no main executable is currently open then attempt to
1797 open the file that was executed to create this inferior. */
1798 if (try_open_exec
&& get_exec_file (0) == NULL
)
1799 exec_file_locate_attach (pid
, 1);
1804 /* Add thread PTID to GDB's thread list. Tag it as executing/running
1805 according to RUNNING. */
1808 remote_add_thread (ptid_t ptid
, int running
, int executing
)
1810 struct remote_state
*rs
= get_remote_state ();
1812 /* GDB historically didn't pull threads in the initial connection
1813 setup. If the remote target doesn't even have a concept of
1814 threads (e.g., a bare-metal target), even if internally we
1815 consider that a single-threaded target, mentioning a new thread
1816 might be confusing to the user. Be silent then, preserving the
1817 age old behavior. */
1818 if (rs
->starting_up
)
1819 add_thread_silent (ptid
);
1823 set_executing (ptid
, executing
);
1824 set_running (ptid
, running
);
1827 /* Come here when we learn about a thread id from the remote target.
1828 It may be the first time we hear about such thread, so take the
1829 opportunity to add it to GDB's thread list. In case this is the
1830 first time we're noticing its corresponding inferior, add it to
1831 GDB's inferior list as well. EXECUTING indicates whether the
1832 thread is (internally) executing or stopped. */
1835 remote_notice_new_inferior (ptid_t currthread
, int executing
)
1837 /* In non-stop mode, we assume new found threads are (externally)
1838 running until proven otherwise with a stop reply. In all-stop,
1839 we can only get here if all threads are stopped. */
1840 int running
= target_is_non_stop_p () ? 1 : 0;
1842 /* If this is a new thread, add it to GDB's thread list.
1843 If we leave it up to WFI to do this, bad things will happen. */
1845 if (in_thread_list (currthread
) && is_exited (currthread
))
1847 /* We're seeing an event on a thread id we knew had exited.
1848 This has to be a new thread reusing the old id. Add it. */
1849 remote_add_thread (currthread
, running
, executing
);
1853 if (!in_thread_list (currthread
))
1855 struct inferior
*inf
= NULL
;
1856 int pid
= ptid_get_pid (currthread
);
1858 if (ptid_is_pid (inferior_ptid
)
1859 && pid
== ptid_get_pid (inferior_ptid
))
1861 /* inferior_ptid has no thread member yet. This can happen
1862 with the vAttach -> remote_wait,"TAAthread:" path if the
1863 stub doesn't support qC. This is the first stop reported
1864 after an attach, so this is the main thread. Update the
1865 ptid in the thread list. */
1866 if (in_thread_list (pid_to_ptid (pid
)))
1867 thread_change_ptid (inferior_ptid
, currthread
);
1870 remote_add_thread (currthread
, running
, executing
);
1871 inferior_ptid
= currthread
;
1876 if (ptid_equal (magic_null_ptid
, inferior_ptid
))
1878 /* inferior_ptid is not set yet. This can happen with the
1879 vRun -> remote_wait,"TAAthread:" path if the stub
1880 doesn't support qC. This is the first stop reported
1881 after an attach, so this is the main thread. Update the
1882 ptid in the thread list. */
1883 thread_change_ptid (inferior_ptid
, currthread
);
1887 /* When connecting to a target remote, or to a target
1888 extended-remote which already was debugging an inferior, we
1889 may not know about it yet. Add it before adding its child
1890 thread, so notifications are emitted in a sensible order. */
1891 if (!in_inferior_list (ptid_get_pid (currthread
)))
1893 struct remote_state
*rs
= get_remote_state ();
1894 int fake_pid_p
= !remote_multi_process_p (rs
);
1896 inf
= remote_add_inferior (fake_pid_p
,
1897 ptid_get_pid (currthread
), -1, 1);
1900 /* This is really a new thread. Add it. */
1901 remote_add_thread (currthread
, running
, executing
);
1903 /* If we found a new inferior, let the common code do whatever
1904 it needs to with it (e.g., read shared libraries, insert
1905 breakpoints), unless we're just setting up an all-stop
1909 struct remote_state
*rs
= get_remote_state ();
1911 if (!rs
->starting_up
)
1912 notice_new_inferior (currthread
, executing
, 0);
1917 /* Return the private thread data, creating it if necessary. */
1919 static struct private_thread_info
*
1920 demand_private_info (ptid_t ptid
)
1922 struct thread_info
*info
= find_thread_ptid (ptid
);
1928 info
->priv
= XNEW (struct private_thread_info
);
1929 info
->private_dtor
= free_private_thread_info
;
1930 info
->priv
->core
= -1;
1931 info
->priv
->extra
= NULL
;
1932 info
->priv
->name
= NULL
;
1938 /* Call this function as a result of
1939 1) A halt indication (T packet) containing a thread id
1940 2) A direct query of currthread
1941 3) Successful execution of set thread */
1944 record_currthread (struct remote_state
*rs
, ptid_t currthread
)
1946 rs
->general_thread
= currthread
;
1949 /* If 'QPassSignals' is supported, tell the remote stub what signals
1950 it can simply pass through to the inferior without reporting. */
1953 remote_pass_signals (struct target_ops
*self
,
1954 int numsigs
, unsigned char *pass_signals
)
1956 if (packet_support (PACKET_QPassSignals
) != PACKET_DISABLE
)
1958 char *pass_packet
, *p
;
1960 struct remote_state
*rs
= get_remote_state ();
1962 gdb_assert (numsigs
< 256);
1963 for (i
= 0; i
< numsigs
; i
++)
1965 if (pass_signals
[i
])
1968 pass_packet
= (char *) xmalloc (count
* 3 + strlen ("QPassSignals:") + 1);
1969 strcpy (pass_packet
, "QPassSignals:");
1970 p
= pass_packet
+ strlen (pass_packet
);
1971 for (i
= 0; i
< numsigs
; i
++)
1973 if (pass_signals
[i
])
1976 *p
++ = tohex (i
>> 4);
1977 *p
++ = tohex (i
& 15);
1986 if (!rs
->last_pass_packet
|| strcmp (rs
->last_pass_packet
, pass_packet
))
1988 putpkt (pass_packet
);
1989 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1990 packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_QPassSignals
]);
1991 if (rs
->last_pass_packet
)
1992 xfree (rs
->last_pass_packet
);
1993 rs
->last_pass_packet
= pass_packet
;
1996 xfree (pass_packet
);
2000 /* If 'QCatchSyscalls' is supported, tell the remote stub
2001 to report syscalls to GDB. */
2004 remote_set_syscall_catchpoint (struct target_ops
*self
,
2005 int pid
, int needed
, int any_count
,
2006 int table_size
, int *table
)
2009 enum packet_result result
;
2012 if (packet_support (PACKET_QCatchSyscalls
) == PACKET_DISABLE
)
2014 /* Not supported. */
2018 if (needed
&& !any_count
)
2022 /* Count how many syscalls are to be caught (table[sysno] != 0). */
2023 for (i
= 0; i
< table_size
; i
++)
2032 fprintf_unfiltered (gdb_stdlog
,
2033 "remote_set_syscall_catchpoint "
2034 "pid %d needed %d any_count %d n_sysno %d\n",
2035 pid
, needed
, any_count
, n_sysno
);
2040 /* Prepare a packet with the sysno list, assuming max 8+1
2041 characters for a sysno. If the resulting packet size is too
2042 big, fallback on the non-selective packet. */
2043 const int maxpktsz
= strlen ("QCatchSyscalls:1") + n_sysno
* 9 + 1;
2045 catch_packet
= (char *) xmalloc (maxpktsz
);
2046 strcpy (catch_packet
, "QCatchSyscalls:1");
2055 /* Add in catch_packet each syscall to be caught (table[i] != 0). */
2056 for (i
= 0; i
< table_size
; i
++)
2059 p
+= xsnprintf (p
, catch_packet
+ maxpktsz
- p
, ";%x", i
);
2062 if (strlen (catch_packet
) > get_remote_packet_size ())
2064 /* catch_packet too big. Fallback to less efficient
2065 non selective mode, with GDB doing the filtering. */
2066 catch_packet
[sizeof ("QCatchSyscalls:1") - 1] = 0;
2070 catch_packet
= xstrdup ("QCatchSyscalls:0");
2073 struct cleanup
*old_chain
= make_cleanup (xfree
, catch_packet
);
2074 struct remote_state
*rs
= get_remote_state ();
2076 putpkt (catch_packet
);
2077 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2078 result
= packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_QCatchSyscalls
]);
2079 do_cleanups (old_chain
);
2080 if (result
== PACKET_OK
)
2087 /* If 'QProgramSignals' is supported, tell the remote stub what
2088 signals it should pass through to the inferior when detaching. */
2091 remote_program_signals (struct target_ops
*self
,
2092 int numsigs
, unsigned char *signals
)
2094 if (packet_support (PACKET_QProgramSignals
) != PACKET_DISABLE
)
2098 struct remote_state
*rs
= get_remote_state ();
2100 gdb_assert (numsigs
< 256);
2101 for (i
= 0; i
< numsigs
; i
++)
2106 packet
= (char *) xmalloc (count
* 3 + strlen ("QProgramSignals:") + 1);
2107 strcpy (packet
, "QProgramSignals:");
2108 p
= packet
+ strlen (packet
);
2109 for (i
= 0; i
< numsigs
; i
++)
2111 if (signal_pass_state (i
))
2114 *p
++ = tohex (i
>> 4);
2115 *p
++ = tohex (i
& 15);
2124 if (!rs
->last_program_signals_packet
2125 || strcmp (rs
->last_program_signals_packet
, packet
) != 0)
2128 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2129 packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_QProgramSignals
]);
2130 xfree (rs
->last_program_signals_packet
);
2131 rs
->last_program_signals_packet
= packet
;
2138 /* If PTID is MAGIC_NULL_PTID, don't set any thread. If PTID is
2139 MINUS_ONE_PTID, set the thread to -1, so the stub returns the
2140 thread. If GEN is set, set the general thread, if not, then set
2141 the step/continue thread. */
2143 set_thread (struct ptid ptid
, int gen
)
2145 struct remote_state
*rs
= get_remote_state ();
2146 ptid_t state
= gen
? rs
->general_thread
: rs
->continue_thread
;
2147 char *buf
= rs
->buf
;
2148 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
2150 if (ptid_equal (state
, ptid
))
2154 *buf
++ = gen
? 'g' : 'c';
2155 if (ptid_equal (ptid
, magic_null_ptid
))
2156 xsnprintf (buf
, endbuf
- buf
, "0");
2157 else if (ptid_equal (ptid
, any_thread_ptid
))
2158 xsnprintf (buf
, endbuf
- buf
, "0");
2159 else if (ptid_equal (ptid
, minus_one_ptid
))
2160 xsnprintf (buf
, endbuf
- buf
, "-1");
2162 write_ptid (buf
, endbuf
, ptid
);
2164 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2166 rs
->general_thread
= ptid
;
2168 rs
->continue_thread
= ptid
;
2172 set_general_thread (struct ptid ptid
)
2174 set_thread (ptid
, 1);
2178 set_continue_thread (struct ptid ptid
)
2180 set_thread (ptid
, 0);
2183 /* Change the remote current process. Which thread within the process
2184 ends up selected isn't important, as long as it is the same process
2185 as what INFERIOR_PTID points to.
2187 This comes from that fact that there is no explicit notion of
2188 "selected process" in the protocol. The selected process for
2189 general operations is the process the selected general thread
2193 set_general_process (void)
2195 struct remote_state
*rs
= get_remote_state ();
2197 /* If the remote can't handle multiple processes, don't bother. */
2198 if (!remote_multi_process_p (rs
))
2201 /* We only need to change the remote current thread if it's pointing
2202 at some other process. */
2203 if (ptid_get_pid (rs
->general_thread
) != ptid_get_pid (inferior_ptid
))
2204 set_general_thread (inferior_ptid
);
2208 /* Return nonzero if this is the main thread that we made up ourselves
2209 to model non-threaded targets as single-threaded. */
2212 remote_thread_always_alive (struct target_ops
*ops
, ptid_t ptid
)
2214 if (ptid_equal (ptid
, magic_null_ptid
))
2215 /* The main thread is always alive. */
2218 if (ptid_get_pid (ptid
) != 0 && ptid_get_lwp (ptid
) == 0)
2219 /* The main thread is always alive. This can happen after a
2220 vAttach, if the remote side doesn't support
2227 /* Return nonzero if the thread PTID is still alive on the remote
2231 remote_thread_alive (struct target_ops
*ops
, ptid_t ptid
)
2233 struct remote_state
*rs
= get_remote_state ();
2236 /* Check if this is a thread that we made up ourselves to model
2237 non-threaded targets as single-threaded. */
2238 if (remote_thread_always_alive (ops
, ptid
))
2242 endp
= rs
->buf
+ get_remote_packet_size ();
2245 write_ptid (p
, endp
, ptid
);
2248 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2249 return (rs
->buf
[0] == 'O' && rs
->buf
[1] == 'K');
2252 /* Return a pointer to a thread name if we know it and NULL otherwise.
2253 The thread_info object owns the memory for the name. */
2256 remote_thread_name (struct target_ops
*ops
, struct thread_info
*info
)
2258 if (info
->priv
!= NULL
)
2259 return info
->priv
->name
;
2264 /* About these extended threadlist and threadinfo packets. They are
2265 variable length packets but, the fields within them are often fixed
2266 length. They are redundent enough to send over UDP as is the
2267 remote protocol in general. There is a matching unit test module
2270 /* WARNING: This threadref data structure comes from the remote O.S.,
2271 libstub protocol encoding, and remote.c. It is not particularly
2274 /* Right now, the internal structure is int. We want it to be bigger.
2275 Plan to fix this. */
2277 typedef int gdb_threadref
; /* Internal GDB thread reference. */
2279 /* gdb_ext_thread_info is an internal GDB data structure which is
2280 equivalent to the reply of the remote threadinfo packet. */
2282 struct gdb_ext_thread_info
2284 threadref threadid
; /* External form of thread reference. */
2285 int active
; /* Has state interesting to GDB?
2287 char display
[256]; /* Brief state display, name,
2288 blocked/suspended. */
2289 char shortname
[32]; /* To be used to name threads. */
2290 char more_display
[256]; /* Long info, statistics, queue depth,
2294 /* The volume of remote transfers can be limited by submitting
2295 a mask containing bits specifying the desired information.
2296 Use a union of these values as the 'selection' parameter to
2297 get_thread_info. FIXME: Make these TAG names more thread specific. */
2299 #define TAG_THREADID 1
2300 #define TAG_EXISTS 2
2301 #define TAG_DISPLAY 4
2302 #define TAG_THREADNAME 8
2303 #define TAG_MOREDISPLAY 16
2305 #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2)
2307 static char *unpack_nibble (char *buf
, int *val
);
2309 static char *unpack_byte (char *buf
, int *value
);
2311 static char *pack_int (char *buf
, int value
);
2313 static char *unpack_int (char *buf
, int *value
);
2315 static char *unpack_string (char *src
, char *dest
, int length
);
2317 static char *pack_threadid (char *pkt
, threadref
*id
);
2319 static char *unpack_threadid (char *inbuf
, threadref
*id
);
2321 void int_to_threadref (threadref
*id
, int value
);
2323 static int threadref_to_int (threadref
*ref
);
2325 static void copy_threadref (threadref
*dest
, threadref
*src
);
2327 static int threadmatch (threadref
*dest
, threadref
*src
);
2329 static char *pack_threadinfo_request (char *pkt
, int mode
,
2332 static int remote_unpack_thread_info_response (char *pkt
,
2333 threadref
*expectedref
,
2334 struct gdb_ext_thread_info
2338 static int remote_get_threadinfo (threadref
*threadid
,
2339 int fieldset
, /*TAG mask */
2340 struct gdb_ext_thread_info
*info
);
2342 static char *pack_threadlist_request (char *pkt
, int startflag
,
2344 threadref
*nextthread
);
2346 static int parse_threadlist_response (char *pkt
,
2348 threadref
*original_echo
,
2349 threadref
*resultlist
,
2352 static int remote_get_threadlist (int startflag
,
2353 threadref
*nextthread
,
2357 threadref
*threadlist
);
2359 typedef int (*rmt_thread_action
) (threadref
*ref
, void *context
);
2361 static int remote_threadlist_iterator (rmt_thread_action stepfunction
,
2362 void *context
, int looplimit
);
2364 static int remote_newthread_step (threadref
*ref
, void *context
);
2367 /* Write a PTID to BUF. ENDBUF points to one-passed-the-end of the
2368 buffer we're allowed to write to. Returns
2369 BUF+CHARACTERS_WRITTEN. */
2372 write_ptid (char *buf
, const char *endbuf
, ptid_t ptid
)
2375 struct remote_state
*rs
= get_remote_state ();
2377 if (remote_multi_process_p (rs
))
2379 pid
= ptid_get_pid (ptid
);
2381 buf
+= xsnprintf (buf
, endbuf
- buf
, "p-%x.", -pid
);
2383 buf
+= xsnprintf (buf
, endbuf
- buf
, "p%x.", pid
);
2385 tid
= ptid_get_lwp (ptid
);
2387 buf
+= xsnprintf (buf
, endbuf
- buf
, "-%x", -tid
);
2389 buf
+= xsnprintf (buf
, endbuf
- buf
, "%x", tid
);
2394 /* Extract a PTID from BUF. If non-null, OBUF is set to the to one
2395 passed the last parsed char. Returns null_ptid on error. */
2398 read_ptid (char *buf
, char **obuf
)
2402 ULONGEST pid
= 0, tid
= 0;
2406 /* Multi-process ptid. */
2407 pp
= unpack_varlen_hex (p
+ 1, &pid
);
2409 error (_("invalid remote ptid: %s"), p
);
2412 pp
= unpack_varlen_hex (p
+ 1, &tid
);
2415 return ptid_build (pid
, tid
, 0);
2418 /* No multi-process. Just a tid. */
2419 pp
= unpack_varlen_hex (p
, &tid
);
2421 /* Return null_ptid when no thread id is found. */
2429 /* Since the stub is not sending a process id, then default to
2430 what's in inferior_ptid, unless it's null at this point. If so,
2431 then since there's no way to know the pid of the reported
2432 threads, use the magic number. */
2433 if (ptid_equal (inferior_ptid
, null_ptid
))
2434 pid
= ptid_get_pid (magic_null_ptid
);
2436 pid
= ptid_get_pid (inferior_ptid
);
2440 return ptid_build (pid
, tid
, 0);
2446 if (ch
>= 'a' && ch
<= 'f')
2447 return ch
- 'a' + 10;
2448 if (ch
>= '0' && ch
<= '9')
2450 if (ch
>= 'A' && ch
<= 'F')
2451 return ch
- 'A' + 10;
2456 stub_unpack_int (char *buff
, int fieldlength
)
2463 nibble
= stubhex (*buff
++);
2467 retval
= retval
<< 4;
2473 unpack_nibble (char *buf
, int *val
)
2475 *val
= fromhex (*buf
++);
2480 unpack_byte (char *buf
, int *value
)
2482 *value
= stub_unpack_int (buf
, 2);
2487 pack_int (char *buf
, int value
)
2489 buf
= pack_hex_byte (buf
, (value
>> 24) & 0xff);
2490 buf
= pack_hex_byte (buf
, (value
>> 16) & 0xff);
2491 buf
= pack_hex_byte (buf
, (value
>> 8) & 0x0ff);
2492 buf
= pack_hex_byte (buf
, (value
& 0xff));
2497 unpack_int (char *buf
, int *value
)
2499 *value
= stub_unpack_int (buf
, 8);
2503 #if 0 /* Currently unused, uncomment when needed. */
2504 static char *pack_string (char *pkt
, char *string
);
2507 pack_string (char *pkt
, char *string
)
2512 len
= strlen (string
);
2514 len
= 200; /* Bigger than most GDB packets, junk??? */
2515 pkt
= pack_hex_byte (pkt
, len
);
2519 if ((ch
== '\0') || (ch
== '#'))
2520 ch
= '*'; /* Protect encapsulation. */
2525 #endif /* 0 (unused) */
2528 unpack_string (char *src
, char *dest
, int length
)
2537 pack_threadid (char *pkt
, threadref
*id
)
2540 unsigned char *altid
;
2542 altid
= (unsigned char *) id
;
2543 limit
= pkt
+ BUF_THREAD_ID_SIZE
;
2545 pkt
= pack_hex_byte (pkt
, *altid
++);
2551 unpack_threadid (char *inbuf
, threadref
*id
)
2554 char *limit
= inbuf
+ BUF_THREAD_ID_SIZE
;
2557 altref
= (char *) id
;
2559 while (inbuf
< limit
)
2561 x
= stubhex (*inbuf
++);
2562 y
= stubhex (*inbuf
++);
2563 *altref
++ = (x
<< 4) | y
;
2568 /* Externally, threadrefs are 64 bits but internally, they are still
2569 ints. This is due to a mismatch of specifications. We would like
2570 to use 64bit thread references internally. This is an adapter
2574 int_to_threadref (threadref
*id
, int value
)
2576 unsigned char *scan
;
2578 scan
= (unsigned char *) id
;
2584 *scan
++ = (value
>> 24) & 0xff;
2585 *scan
++ = (value
>> 16) & 0xff;
2586 *scan
++ = (value
>> 8) & 0xff;
2587 *scan
++ = (value
& 0xff);
2591 threadref_to_int (threadref
*ref
)
2594 unsigned char *scan
;
2600 value
= (value
<< 8) | ((*scan
++) & 0xff);
2605 copy_threadref (threadref
*dest
, threadref
*src
)
2608 unsigned char *csrc
, *cdest
;
2610 csrc
= (unsigned char *) src
;
2611 cdest
= (unsigned char *) dest
;
2618 threadmatch (threadref
*dest
, threadref
*src
)
2620 /* Things are broken right now, so just assume we got a match. */
2622 unsigned char *srcp
, *destp
;
2624 srcp
= (char *) src
;
2625 destp
= (char *) dest
;
2629 result
&= (*srcp
++ == *destp
++) ? 1 : 0;
2636 threadid:1, # always request threadid
2643 /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */
2646 pack_threadinfo_request (char *pkt
, int mode
, threadref
*id
)
2648 *pkt
++ = 'q'; /* Info Query */
2649 *pkt
++ = 'P'; /* process or thread info */
2650 pkt
= pack_int (pkt
, mode
); /* mode */
2651 pkt
= pack_threadid (pkt
, id
); /* threadid */
2652 *pkt
= '\0'; /* terminate */
2656 /* These values tag the fields in a thread info response packet. */
2657 /* Tagging the fields allows us to request specific fields and to
2658 add more fields as time goes by. */
2660 #define TAG_THREADID 1 /* Echo the thread identifier. */
2661 #define TAG_EXISTS 2 /* Is this process defined enough to
2662 fetch registers and its stack? */
2663 #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */
2664 #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */
2665 #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about
2669 remote_unpack_thread_info_response (char *pkt
, threadref
*expectedref
,
2670 struct gdb_ext_thread_info
*info
)
2672 struct remote_state
*rs
= get_remote_state ();
2676 char *limit
= pkt
+ rs
->buf_size
; /* Plausible parsing limit. */
2679 /* info->threadid = 0; FIXME: implement zero_threadref. */
2681 info
->display
[0] = '\0';
2682 info
->shortname
[0] = '\0';
2683 info
->more_display
[0] = '\0';
2685 /* Assume the characters indicating the packet type have been
2687 pkt
= unpack_int (pkt
, &mask
); /* arg mask */
2688 pkt
= unpack_threadid (pkt
, &ref
);
2691 warning (_("Incomplete response to threadinfo request."));
2692 if (!threadmatch (&ref
, expectedref
))
2693 { /* This is an answer to a different request. */
2694 warning (_("ERROR RMT Thread info mismatch."));
2697 copy_threadref (&info
->threadid
, &ref
);
2699 /* Loop on tagged fields , try to bail if somthing goes wrong. */
2701 /* Packets are terminated with nulls. */
2702 while ((pkt
< limit
) && mask
&& *pkt
)
2704 pkt
= unpack_int (pkt
, &tag
); /* tag */
2705 pkt
= unpack_byte (pkt
, &length
); /* length */
2706 if (!(tag
& mask
)) /* Tags out of synch with mask. */
2708 warning (_("ERROR RMT: threadinfo tag mismatch."));
2712 if (tag
== TAG_THREADID
)
2716 warning (_("ERROR RMT: length of threadid is not 16."));
2720 pkt
= unpack_threadid (pkt
, &ref
);
2721 mask
= mask
& ~TAG_THREADID
;
2724 if (tag
== TAG_EXISTS
)
2726 info
->active
= stub_unpack_int (pkt
, length
);
2728 mask
= mask
& ~(TAG_EXISTS
);
2731 warning (_("ERROR RMT: 'exists' length too long."));
2737 if (tag
== TAG_THREADNAME
)
2739 pkt
= unpack_string (pkt
, &info
->shortname
[0], length
);
2740 mask
= mask
& ~TAG_THREADNAME
;
2743 if (tag
== TAG_DISPLAY
)
2745 pkt
= unpack_string (pkt
, &info
->display
[0], length
);
2746 mask
= mask
& ~TAG_DISPLAY
;
2749 if (tag
== TAG_MOREDISPLAY
)
2751 pkt
= unpack_string (pkt
, &info
->more_display
[0], length
);
2752 mask
= mask
& ~TAG_MOREDISPLAY
;
2755 warning (_("ERROR RMT: unknown thread info tag."));
2756 break; /* Not a tag we know about. */
2762 remote_get_threadinfo (threadref
*threadid
, int fieldset
, /* TAG mask */
2763 struct gdb_ext_thread_info
*info
)
2765 struct remote_state
*rs
= get_remote_state ();
2768 pack_threadinfo_request (rs
->buf
, fieldset
, threadid
);
2770 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2772 if (rs
->buf
[0] == '\0')
2775 result
= remote_unpack_thread_info_response (rs
->buf
+ 2,
2780 /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */
2783 pack_threadlist_request (char *pkt
, int startflag
, int threadcount
,
2784 threadref
*nextthread
)
2786 *pkt
++ = 'q'; /* info query packet */
2787 *pkt
++ = 'L'; /* Process LIST or threadLIST request */
2788 pkt
= pack_nibble (pkt
, startflag
); /* initflag 1 bytes */
2789 pkt
= pack_hex_byte (pkt
, threadcount
); /* threadcount 2 bytes */
2790 pkt
= pack_threadid (pkt
, nextthread
); /* 64 bit thread identifier */
2795 /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */
2798 parse_threadlist_response (char *pkt
, int result_limit
,
2799 threadref
*original_echo
, threadref
*resultlist
,
2802 struct remote_state
*rs
= get_remote_state ();
2804 int count
, resultcount
, done
;
2807 /* Assume the 'q' and 'M chars have been stripped. */
2808 limit
= pkt
+ (rs
->buf_size
- BUF_THREAD_ID_SIZE
);
2809 /* done parse past here */
2810 pkt
= unpack_byte (pkt
, &count
); /* count field */
2811 pkt
= unpack_nibble (pkt
, &done
);
2812 /* The first threadid is the argument threadid. */
2813 pkt
= unpack_threadid (pkt
, original_echo
); /* should match query packet */
2814 while ((count
-- > 0) && (pkt
< limit
))
2816 pkt
= unpack_threadid (pkt
, resultlist
++);
2817 if (resultcount
++ >= result_limit
)
2825 /* Fetch the next batch of threads from the remote. Returns -1 if the
2826 qL packet is not supported, 0 on error and 1 on success. */
2829 remote_get_threadlist (int startflag
, threadref
*nextthread
, int result_limit
,
2830 int *done
, int *result_count
, threadref
*threadlist
)
2832 struct remote_state
*rs
= get_remote_state ();
2835 /* Trancate result limit to be smaller than the packet size. */
2836 if ((((result_limit
+ 1) * BUF_THREAD_ID_SIZE
) + 10)
2837 >= get_remote_packet_size ())
2838 result_limit
= (get_remote_packet_size () / BUF_THREAD_ID_SIZE
) - 2;
2840 pack_threadlist_request (rs
->buf
, startflag
, result_limit
, nextthread
);
2842 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2843 if (*rs
->buf
== '\0')
2845 /* Packet not supported. */
2850 parse_threadlist_response (rs
->buf
+ 2, result_limit
,
2851 &rs
->echo_nextthread
, threadlist
, done
);
2853 if (!threadmatch (&rs
->echo_nextthread
, nextthread
))
2855 /* FIXME: This is a good reason to drop the packet. */
2856 /* Possably, there is a duplicate response. */
2858 retransmit immediatly - race conditions
2859 retransmit after timeout - yes
2861 wait for packet, then exit
2863 warning (_("HMM: threadlist did not echo arg thread, dropping it."));
2864 return 0; /* I choose simply exiting. */
2866 if (*result_count
<= 0)
2870 warning (_("RMT ERROR : failed to get remote thread list."));
2873 return result
; /* break; */
2875 if (*result_count
> result_limit
)
2878 warning (_("RMT ERROR: threadlist response longer than requested."));
2884 /* Fetch the list of remote threads, with the qL packet, and call
2885 STEPFUNCTION for each thread found. Stops iterating and returns 1
2886 if STEPFUNCTION returns true. Stops iterating and returns 0 if the
2887 STEPFUNCTION returns false. If the packet is not supported,
2891 remote_threadlist_iterator (rmt_thread_action stepfunction
, void *context
,
2894 struct remote_state
*rs
= get_remote_state ();
2895 int done
, i
, result_count
;
2903 if (loopcount
++ > looplimit
)
2906 warning (_("Remote fetch threadlist -infinite loop-."));
2909 result
= remote_get_threadlist (startflag
, &rs
->nextthread
,
2910 MAXTHREADLISTRESULTS
,
2911 &done
, &result_count
,
2912 rs
->resultthreadlist
);
2915 /* Clear for later iterations. */
2917 /* Setup to resume next batch of thread references, set nextthread. */
2918 if (result_count
>= 1)
2919 copy_threadref (&rs
->nextthread
,
2920 &rs
->resultthreadlist
[result_count
- 1]);
2922 while (result_count
--)
2924 if (!(*stepfunction
) (&rs
->resultthreadlist
[i
++], context
))
2934 /* A thread found on the remote target. */
2936 typedef struct thread_item
2938 /* The thread's PTID. */
2941 /* The thread's extra info. May be NULL. */
2944 /* The thread's name. May be NULL. */
2947 /* The core the thread was running on. -1 if not known. */
2950 DEF_VEC_O(thread_item_t
);
2952 /* Context passed around to the various methods listing remote
2953 threads. As new threads are found, they're added to the ITEMS
2956 struct threads_listing_context
2958 /* The threads found on the remote target. */
2959 VEC (thread_item_t
) *items
;
2962 /* Discard the contents of the constructed thread listing context. */
2965 clear_threads_listing_context (void *p
)
2967 struct threads_listing_context
*context
2968 = (struct threads_listing_context
*) p
;
2970 struct thread_item
*item
;
2972 for (i
= 0; VEC_iterate (thread_item_t
, context
->items
, i
, item
); ++i
)
2974 xfree (item
->extra
);
2978 VEC_free (thread_item_t
, context
->items
);
2981 /* Remove the thread specified as the related_pid field of WS
2982 from the CONTEXT list. */
2985 threads_listing_context_remove (struct target_waitstatus
*ws
,
2986 struct threads_listing_context
*context
)
2988 struct thread_item
*item
;
2990 ptid_t child_ptid
= ws
->value
.related_pid
;
2992 for (i
= 0; VEC_iterate (thread_item_t
, context
->items
, i
, item
); ++i
)
2994 if (ptid_equal (item
->ptid
, child_ptid
))
2996 VEC_ordered_remove (thread_item_t
, context
->items
, i
);
3003 remote_newthread_step (threadref
*ref
, void *data
)
3005 struct threads_listing_context
*context
3006 = (struct threads_listing_context
*) data
;
3007 struct thread_item item
;
3008 int pid
= ptid_get_pid (inferior_ptid
);
3010 item
.ptid
= ptid_build (pid
, threadref_to_int (ref
), 0);
3015 VEC_safe_push (thread_item_t
, context
->items
, &item
);
3017 return 1; /* continue iterator */
3020 #define CRAZY_MAX_THREADS 1000
3023 remote_current_thread (ptid_t oldpid
)
3025 struct remote_state
*rs
= get_remote_state ();
3028 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3029 if (rs
->buf
[0] == 'Q' && rs
->buf
[1] == 'C')
3034 result
= read_ptid (&rs
->buf
[2], &obuf
);
3035 if (*obuf
!= '\0' && remote_debug
)
3036 fprintf_unfiltered (gdb_stdlog
,
3037 "warning: garbage in qC reply\n");
3045 /* List remote threads using the deprecated qL packet. */
3048 remote_get_threads_with_ql (struct target_ops
*ops
,
3049 struct threads_listing_context
*context
)
3051 if (remote_threadlist_iterator (remote_newthread_step
, context
,
3052 CRAZY_MAX_THREADS
) >= 0)
3058 #if defined(HAVE_LIBEXPAT)
3061 start_thread (struct gdb_xml_parser
*parser
,
3062 const struct gdb_xml_element
*element
,
3063 void *user_data
, VEC(gdb_xml_value_s
) *attributes
)
3065 struct threads_listing_context
*data
3066 = (struct threads_listing_context
*) user_data
;
3068 struct thread_item item
;
3070 struct gdb_xml_value
*attr
;
3072 id
= (char *) xml_find_attribute (attributes
, "id")->value
;
3073 item
.ptid
= read_ptid (id
, NULL
);
3075 attr
= xml_find_attribute (attributes
, "core");
3077 item
.core
= *(ULONGEST
*) attr
->value
;
3081 attr
= xml_find_attribute (attributes
, "name");
3082 item
.name
= attr
!= NULL
? xstrdup ((const char *) attr
->value
) : NULL
;
3086 VEC_safe_push (thread_item_t
, data
->items
, &item
);
3090 end_thread (struct gdb_xml_parser
*parser
,
3091 const struct gdb_xml_element
*element
,
3092 void *user_data
, const char *body_text
)
3094 struct threads_listing_context
*data
3095 = (struct threads_listing_context
*) user_data
;
3097 if (body_text
&& *body_text
)
3098 VEC_last (thread_item_t
, data
->items
)->extra
= xstrdup (body_text
);
3101 const struct gdb_xml_attribute thread_attributes
[] = {
3102 { "id", GDB_XML_AF_NONE
, NULL
, NULL
},
3103 { "core", GDB_XML_AF_OPTIONAL
, gdb_xml_parse_attr_ulongest
, NULL
},
3104 { "name", GDB_XML_AF_OPTIONAL
, NULL
, NULL
},
3105 { NULL
, GDB_XML_AF_NONE
, NULL
, NULL
}
3108 const struct gdb_xml_element thread_children
[] = {
3109 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
3112 const struct gdb_xml_element threads_children
[] = {
3113 { "thread", thread_attributes
, thread_children
,
3114 GDB_XML_EF_REPEATABLE
| GDB_XML_EF_OPTIONAL
,
3115 start_thread
, end_thread
},
3116 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
3119 const struct gdb_xml_element threads_elements
[] = {
3120 { "threads", NULL
, threads_children
,
3121 GDB_XML_EF_NONE
, NULL
, NULL
},
3122 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
3127 /* List remote threads using qXfer:threads:read. */
3130 remote_get_threads_with_qxfer (struct target_ops
*ops
,
3131 struct threads_listing_context
*context
)
3133 #if defined(HAVE_LIBEXPAT)
3134 if (packet_support (PACKET_qXfer_threads
) == PACKET_ENABLE
)
3136 char *xml
= target_read_stralloc (ops
, TARGET_OBJECT_THREADS
, NULL
);
3137 struct cleanup
*back_to
= make_cleanup (xfree
, xml
);
3139 if (xml
!= NULL
&& *xml
!= '\0')
3141 gdb_xml_parse_quick (_("threads"), "threads.dtd",
3142 threads_elements
, xml
, context
);
3145 do_cleanups (back_to
);
3153 /* List remote threads using qfThreadInfo/qsThreadInfo. */
3156 remote_get_threads_with_qthreadinfo (struct target_ops
*ops
,
3157 struct threads_listing_context
*context
)
3159 struct remote_state
*rs
= get_remote_state ();
3161 if (rs
->use_threadinfo_query
)
3165 putpkt ("qfThreadInfo");
3166 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3168 if (bufp
[0] != '\0') /* q packet recognized */
3170 while (*bufp
++ == 'm') /* reply contains one or more TID */
3174 struct thread_item item
;
3176 item
.ptid
= read_ptid (bufp
, &bufp
);
3181 VEC_safe_push (thread_item_t
, context
->items
, &item
);
3183 while (*bufp
++ == ','); /* comma-separated list */
3184 putpkt ("qsThreadInfo");
3185 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3192 /* Packet not recognized. */
3193 rs
->use_threadinfo_query
= 0;
3200 /* Implement the to_update_thread_list function for the remote
3204 remote_update_thread_list (struct target_ops
*ops
)
3206 struct threads_listing_context context
;
3207 struct cleanup
*old_chain
;
3210 context
.items
= NULL
;
3211 old_chain
= make_cleanup (clear_threads_listing_context
, &context
);
3213 /* We have a few different mechanisms to fetch the thread list. Try
3214 them all, starting with the most preferred one first, falling
3215 back to older methods. */
3216 if (remote_get_threads_with_qxfer (ops
, &context
)
3217 || remote_get_threads_with_qthreadinfo (ops
, &context
)
3218 || remote_get_threads_with_ql (ops
, &context
))
3221 struct thread_item
*item
;
3222 struct thread_info
*tp
, *tmp
;
3226 if (VEC_empty (thread_item_t
, context
.items
)
3227 && remote_thread_always_alive (ops
, inferior_ptid
))
3229 /* Some targets don't really support threads, but still
3230 reply an (empty) thread list in response to the thread
3231 listing packets, instead of replying "packet not
3232 supported". Exit early so we don't delete the main
3234 do_cleanups (old_chain
);
3238 /* CONTEXT now holds the current thread list on the remote
3239 target end. Delete GDB-side threads no longer found on the
3241 ALL_THREADS_SAFE (tp
, tmp
)
3244 VEC_iterate (thread_item_t
, context
.items
, i
, item
);
3247 if (ptid_equal (item
->ptid
, tp
->ptid
))
3251 if (i
== VEC_length (thread_item_t
, context
.items
))
3254 delete_thread (tp
->ptid
);
3258 /* Remove any unreported fork child threads from CONTEXT so
3259 that we don't interfere with follow fork, which is where
3260 creation of such threads is handled. */
3261 remove_new_fork_children (&context
);
3263 /* And now add threads we don't know about yet to our list. */
3265 VEC_iterate (thread_item_t
, context
.items
, i
, item
);
3268 if (!ptid_equal (item
->ptid
, null_ptid
))
3270 struct private_thread_info
*info
;
3271 /* In non-stop mode, we assume new found threads are
3272 executing until proven otherwise with a stop reply.
3273 In all-stop, we can only get here if all threads are
3275 int executing
= target_is_non_stop_p () ? 1 : 0;
3277 remote_notice_new_inferior (item
->ptid
, executing
);
3279 info
= demand_private_info (item
->ptid
);
3280 info
->core
= item
->core
;
3281 info
->extra
= item
->extra
;
3283 info
->name
= item
->name
;
3291 /* If no thread listing method is supported, then query whether
3292 each known thread is alive, one by one, with the T packet.
3293 If the target doesn't support threads at all, then this is a
3294 no-op. See remote_thread_alive. */
3298 do_cleanups (old_chain
);
3302 * Collect a descriptive string about the given thread.
3303 * The target may say anything it wants to about the thread
3304 * (typically info about its blocked / runnable state, name, etc.).
3305 * This string will appear in the info threads display.
3307 * Optional: targets are not required to implement this function.
3311 remote_threads_extra_info (struct target_ops
*self
, struct thread_info
*tp
)
3313 struct remote_state
*rs
= get_remote_state ();
3317 struct gdb_ext_thread_info threadinfo
;
3318 static char display_buf
[100]; /* arbitrary... */
3319 int n
= 0; /* position in display_buf */
3321 if (rs
->remote_desc
== 0) /* paranoia */
3322 internal_error (__FILE__
, __LINE__
,
3323 _("remote_threads_extra_info"));
3325 if (ptid_equal (tp
->ptid
, magic_null_ptid
)
3326 || (ptid_get_pid (tp
->ptid
) != 0 && ptid_get_lwp (tp
->ptid
) == 0))
3327 /* This is the main thread which was added by GDB. The remote
3328 server doesn't know about it. */
3331 if (packet_support (PACKET_qXfer_threads
) == PACKET_ENABLE
)
3333 struct thread_info
*info
= find_thread_ptid (tp
->ptid
);
3335 if (info
&& info
->priv
)
3336 return info
->priv
->extra
;
3341 if (rs
->use_threadextra_query
)
3344 char *endb
= rs
->buf
+ get_remote_packet_size ();
3346 xsnprintf (b
, endb
- b
, "qThreadExtraInfo,");
3348 write_ptid (b
, endb
, tp
->ptid
);
3351 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3352 if (rs
->buf
[0] != 0)
3354 n
= min (strlen (rs
->buf
) / 2, sizeof (display_buf
));
3355 result
= hex2bin (rs
->buf
, (gdb_byte
*) display_buf
, n
);
3356 display_buf
[result
] = '\0';
3361 /* If the above query fails, fall back to the old method. */
3362 rs
->use_threadextra_query
= 0;
3363 set
= TAG_THREADID
| TAG_EXISTS
| TAG_THREADNAME
3364 | TAG_MOREDISPLAY
| TAG_DISPLAY
;
3365 int_to_threadref (&id
, ptid_get_lwp (tp
->ptid
));
3366 if (remote_get_threadinfo (&id
, set
, &threadinfo
))
3367 if (threadinfo
.active
)
3369 if (*threadinfo
.shortname
)
3370 n
+= xsnprintf (&display_buf
[0], sizeof (display_buf
) - n
,
3371 " Name: %s,", threadinfo
.shortname
);
3372 if (*threadinfo
.display
)
3373 n
+= xsnprintf (&display_buf
[n
], sizeof (display_buf
) - n
,
3374 " State: %s,", threadinfo
.display
);
3375 if (*threadinfo
.more_display
)
3376 n
+= xsnprintf (&display_buf
[n
], sizeof (display_buf
) - n
,
3377 " Priority: %s", threadinfo
.more_display
);
3381 /* For purely cosmetic reasons, clear up trailing commas. */
3382 if (',' == display_buf
[n
-1])
3383 display_buf
[n
-1] = ' ';
3392 remote_static_tracepoint_marker_at (struct target_ops
*self
, CORE_ADDR addr
,
3393 struct static_tracepoint_marker
*marker
)
3395 struct remote_state
*rs
= get_remote_state ();
3398 xsnprintf (p
, get_remote_packet_size (), "qTSTMat:");
3400 p
+= hexnumstr (p
, addr
);
3402 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3406 error (_("Remote failure reply: %s"), p
);
3410 parse_static_tracepoint_marker_definition (p
, &p
, marker
);
3417 static VEC(static_tracepoint_marker_p
) *
3418 remote_static_tracepoint_markers_by_strid (struct target_ops
*self
,
3421 struct remote_state
*rs
= get_remote_state ();
3422 VEC(static_tracepoint_marker_p
) *markers
= NULL
;
3423 struct static_tracepoint_marker
*marker
= NULL
;
3424 struct cleanup
*old_chain
;
3427 /* Ask for a first packet of static tracepoint marker
3430 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3433 error (_("Remote failure reply: %s"), p
);
3435 old_chain
= make_cleanup (free_current_marker
, &marker
);
3440 marker
= XCNEW (struct static_tracepoint_marker
);
3444 parse_static_tracepoint_marker_definition (p
, &p
, marker
);
3446 if (strid
== NULL
|| strcmp (strid
, marker
->str_id
) == 0)
3448 VEC_safe_push (static_tracepoint_marker_p
,
3454 release_static_tracepoint_marker (marker
);
3455 memset (marker
, 0, sizeof (*marker
));
3458 while (*p
++ == ','); /* comma-separated list */
3459 /* Ask for another packet of static tracepoint definition. */
3461 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3465 do_cleanups (old_chain
);
3470 /* Implement the to_get_ada_task_ptid function for the remote targets. */
3473 remote_get_ada_task_ptid (struct target_ops
*self
, long lwp
, long thread
)
3475 return ptid_build (ptid_get_pid (inferior_ptid
), lwp
, 0);
3479 /* Restart the remote side; this is an extended protocol operation. */
3482 extended_remote_restart (void)
3484 struct remote_state
*rs
= get_remote_state ();
3486 /* Send the restart command; for reasons I don't understand the
3487 remote side really expects a number after the "R". */
3488 xsnprintf (rs
->buf
, get_remote_packet_size (), "R%x", 0);
3491 remote_fileio_reset ();
3494 /* Clean up connection to a remote debugger. */
3497 remote_close (struct target_ops
*self
)
3499 struct remote_state
*rs
= get_remote_state ();
3501 if (rs
->remote_desc
== NULL
)
3502 return; /* already closed */
3504 /* Make sure we leave stdin registered in the event loop. */
3505 remote_terminal_ours (self
);
3507 serial_close (rs
->remote_desc
);
3508 rs
->remote_desc
= NULL
;
3510 /* We don't have a connection to the remote stub anymore. Get rid
3511 of all the inferiors and their threads we were controlling.
3512 Reset inferior_ptid to null_ptid first, as otherwise has_stack_frame
3513 will be unable to find the thread corresponding to (pid, 0, 0). */
3514 inferior_ptid
= null_ptid
;
3515 discard_all_inferiors ();
3517 /* We are closing the remote target, so we should discard
3518 everything of this target. */
3519 discard_pending_stop_replies_in_queue (rs
);
3521 if (remote_async_inferior_event_token
)
3522 delete_async_event_handler (&remote_async_inferior_event_token
);
3524 remote_notif_state_xfree (rs
->notif_state
);
3526 trace_reset_local_state ();
3529 /* Query the remote side for the text, data and bss offsets. */
3534 struct remote_state
*rs
= get_remote_state ();
3537 int lose
, num_segments
= 0, do_sections
, do_segments
;
3538 CORE_ADDR text_addr
, data_addr
, bss_addr
, segments
[2];
3539 struct section_offsets
*offs
;
3540 struct symfile_segment_data
*data
;
3542 if (symfile_objfile
== NULL
)
3545 putpkt ("qOffsets");
3546 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3549 if (buf
[0] == '\000')
3550 return; /* Return silently. Stub doesn't support
3554 warning (_("Remote failure reply: %s"), buf
);
3558 /* Pick up each field in turn. This used to be done with scanf, but
3559 scanf will make trouble if CORE_ADDR size doesn't match
3560 conversion directives correctly. The following code will work
3561 with any size of CORE_ADDR. */
3562 text_addr
= data_addr
= bss_addr
= 0;
3566 if (startswith (ptr
, "Text="))
3569 /* Don't use strtol, could lose on big values. */
3570 while (*ptr
&& *ptr
!= ';')
3571 text_addr
= (text_addr
<< 4) + fromhex (*ptr
++);
3573 if (startswith (ptr
, ";Data="))
3576 while (*ptr
&& *ptr
!= ';')
3577 data_addr
= (data_addr
<< 4) + fromhex (*ptr
++);
3582 if (!lose
&& startswith (ptr
, ";Bss="))
3585 while (*ptr
&& *ptr
!= ';')
3586 bss_addr
= (bss_addr
<< 4) + fromhex (*ptr
++);
3588 if (bss_addr
!= data_addr
)
3589 warning (_("Target reported unsupported offsets: %s"), buf
);
3594 else if (startswith (ptr
, "TextSeg="))
3597 /* Don't use strtol, could lose on big values. */
3598 while (*ptr
&& *ptr
!= ';')
3599 text_addr
= (text_addr
<< 4) + fromhex (*ptr
++);
3602 if (startswith (ptr
, ";DataSeg="))
3605 while (*ptr
&& *ptr
!= ';')
3606 data_addr
= (data_addr
<< 4) + fromhex (*ptr
++);
3614 error (_("Malformed response to offset query, %s"), buf
);
3615 else if (*ptr
!= '\0')
3616 warning (_("Target reported unsupported offsets: %s"), buf
);
3618 offs
= ((struct section_offsets
*)
3619 alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
)));
3620 memcpy (offs
, symfile_objfile
->section_offsets
,
3621 SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
));
3623 data
= get_symfile_segment_data (symfile_objfile
->obfd
);
3624 do_segments
= (data
!= NULL
);
3625 do_sections
= num_segments
== 0;
3627 if (num_segments
> 0)
3629 segments
[0] = text_addr
;
3630 segments
[1] = data_addr
;
3632 /* If we have two segments, we can still try to relocate everything
3633 by assuming that the .text and .data offsets apply to the whole
3634 text and data segments. Convert the offsets given in the packet
3635 to base addresses for symfile_map_offsets_to_segments. */
3636 else if (data
&& data
->num_segments
== 2)
3638 segments
[0] = data
->segment_bases
[0] + text_addr
;
3639 segments
[1] = data
->segment_bases
[1] + data_addr
;
3642 /* If the object file has only one segment, assume that it is text
3643 rather than data; main programs with no writable data are rare,
3644 but programs with no code are useless. Of course the code might
3645 have ended up in the data segment... to detect that we would need
3646 the permissions here. */
3647 else if (data
&& data
->num_segments
== 1)
3649 segments
[0] = data
->segment_bases
[0] + text_addr
;
3652 /* There's no way to relocate by segment. */
3658 int ret
= symfile_map_offsets_to_segments (symfile_objfile
->obfd
, data
,
3659 offs
, num_segments
, segments
);
3661 if (ret
== 0 && !do_sections
)
3662 error (_("Can not handle qOffsets TextSeg "
3663 "response with this symbol file"));
3670 free_symfile_segment_data (data
);
3674 offs
->offsets
[SECT_OFF_TEXT (symfile_objfile
)] = text_addr
;
3676 /* This is a temporary kludge to force data and bss to use the
3677 same offsets because that's what nlmconv does now. The real
3678 solution requires changes to the stub and remote.c that I
3679 don't have time to do right now. */
3681 offs
->offsets
[SECT_OFF_DATA (symfile_objfile
)] = data_addr
;
3682 offs
->offsets
[SECT_OFF_BSS (symfile_objfile
)] = data_addr
;
3685 objfile_relocate (symfile_objfile
, offs
);
3688 /* Send interrupt_sequence to remote target. */
3690 send_interrupt_sequence (void)
3692 struct remote_state
*rs
= get_remote_state ();
3694 if (interrupt_sequence_mode
== interrupt_sequence_control_c
)
3695 remote_serial_write ("\x03", 1);
3696 else if (interrupt_sequence_mode
== interrupt_sequence_break
)
3697 serial_send_break (rs
->remote_desc
);
3698 else if (interrupt_sequence_mode
== interrupt_sequence_break_g
)
3700 serial_send_break (rs
->remote_desc
);
3701 remote_serial_write ("g", 1);
3704 internal_error (__FILE__
, __LINE__
,
3705 _("Invalid value for interrupt_sequence_mode: %s."),
3706 interrupt_sequence_mode
);
3710 /* If STOP_REPLY is a T stop reply, look for the "thread" register,
3711 and extract the PTID. Returns NULL_PTID if not found. */
3714 stop_reply_extract_thread (char *stop_reply
)
3716 if (stop_reply
[0] == 'T' && strlen (stop_reply
) > 3)
3720 /* Txx r:val ; r:val (...) */
3723 /* Look for "register" named "thread". */
3728 p1
= strchr (p
, ':');
3732 if (strncmp (p
, "thread", p1
- p
) == 0)
3733 return read_ptid (++p1
, &p
);
3735 p1
= strchr (p
, ';');
3747 /* Determine the remote side's current thread. If we have a stop
3748 reply handy (in WAIT_STATUS), maybe it's a T stop reply with a
3749 "thread" register we can extract the current thread from. If not,
3750 ask the remote which is the current thread with qC. The former
3751 method avoids a roundtrip. */
3754 get_current_thread (char *wait_status
)
3756 ptid_t ptid
= null_ptid
;
3758 /* Note we don't use remote_parse_stop_reply as that makes use of
3759 the target architecture, which we haven't yet fully determined at
3761 if (wait_status
!= NULL
)
3762 ptid
= stop_reply_extract_thread (wait_status
);
3763 if (ptid_equal (ptid
, null_ptid
))
3764 ptid
= remote_current_thread (inferior_ptid
);
3769 /* Query the remote target for which is the current thread/process,
3770 add it to our tables, and update INFERIOR_PTID. The caller is
3771 responsible for setting the state such that the remote end is ready
3772 to return the current thread.
3774 This function is called after handling the '?' or 'vRun' packets,
3775 whose response is a stop reply from which we can also try
3776 extracting the thread. If the target doesn't support the explicit
3777 qC query, we infer the current thread from that stop reply, passed
3778 in in WAIT_STATUS, which may be NULL. */
3781 add_current_inferior_and_thread (char *wait_status
)
3783 struct remote_state
*rs
= get_remote_state ();
3787 inferior_ptid
= null_ptid
;
3789 /* Now, if we have thread information, update inferior_ptid. */
3790 ptid
= get_current_thread (wait_status
);
3792 if (!ptid_equal (ptid
, null_ptid
))
3794 if (!remote_multi_process_p (rs
))
3797 inferior_ptid
= ptid
;
3801 /* Without this, some commands which require an active target
3802 (such as kill) won't work. This variable serves (at least)
3803 double duty as both the pid of the target process (if it has
3804 such), and as a flag indicating that a target is active. */
3805 inferior_ptid
= magic_null_ptid
;
3809 remote_add_inferior (fake_pid_p
, ptid_get_pid (inferior_ptid
), -1, 1);
3811 /* Add the main thread. */
3812 add_thread_silent (inferior_ptid
);
3815 /* Print info about a thread that was found already stopped on
3819 print_one_stopped_thread (struct thread_info
*thread
)
3821 struct target_waitstatus
*ws
= &thread
->suspend
.waitstatus
;
3823 switch_to_thread (thread
->ptid
);
3824 stop_pc
= get_frame_pc (get_current_frame ());
3825 set_current_sal_from_frame (get_current_frame ());
3827 thread
->suspend
.waitstatus_pending_p
= 0;
3829 if (ws
->kind
== TARGET_WAITKIND_STOPPED
)
3831 enum gdb_signal sig
= ws
->value
.sig
;
3833 if (signal_print_state (sig
))
3834 observer_notify_signal_received (sig
);
3836 observer_notify_normal_stop (NULL
, 1);
3839 /* Process all initial stop replies the remote side sent in response
3840 to the ? packet. These indicate threads that were already stopped
3841 on initial connection. We mark these threads as stopped and print
3842 their current frame before giving the user the prompt. */
3845 process_initial_stop_replies (int from_tty
)
3847 int pending_stop_replies
= stop_reply_queue_length ();
3848 struct inferior
*inf
;
3849 struct thread_info
*thread
;
3850 struct thread_info
*selected
= NULL
;
3851 struct thread_info
*lowest_stopped
= NULL
;
3852 struct thread_info
*first
= NULL
;
3854 /* Consume the initial pending events. */
3855 while (pending_stop_replies
-- > 0)
3857 ptid_t waiton_ptid
= minus_one_ptid
;
3859 struct target_waitstatus ws
;
3860 int ignore_event
= 0;
3861 struct thread_info
*thread
;
3863 memset (&ws
, 0, sizeof (ws
));
3864 event_ptid
= target_wait (waiton_ptid
, &ws
, TARGET_WNOHANG
);
3866 print_target_wait_results (waiton_ptid
, event_ptid
, &ws
);
3870 case TARGET_WAITKIND_IGNORE
:
3871 case TARGET_WAITKIND_NO_RESUMED
:
3872 case TARGET_WAITKIND_SIGNALLED
:
3873 case TARGET_WAITKIND_EXITED
:
3874 /* We shouldn't see these, but if we do, just ignore. */
3876 fprintf_unfiltered (gdb_stdlog
, "remote: event ignored\n");
3880 case TARGET_WAITKIND_EXECD
:
3881 xfree (ws
.value
.execd_pathname
);
3890 thread
= find_thread_ptid (event_ptid
);
3892 if (ws
.kind
== TARGET_WAITKIND_STOPPED
)
3894 enum gdb_signal sig
= ws
.value
.sig
;
3896 /* Stubs traditionally report SIGTRAP as initial signal,
3897 instead of signal 0. Suppress it. */
3898 if (sig
== GDB_SIGNAL_TRAP
)
3900 thread
->suspend
.stop_signal
= sig
;
3904 thread
->suspend
.waitstatus
= ws
;
3906 if (ws
.kind
!= TARGET_WAITKIND_STOPPED
3907 || ws
.value
.sig
!= GDB_SIGNAL_0
)
3908 thread
->suspend
.waitstatus_pending_p
= 1;
3910 set_executing (event_ptid
, 0);
3911 set_running (event_ptid
, 0);
3914 /* "Notice" the new inferiors before anything related to
3915 registers/memory. */
3921 inf
->needs_setup
= 1;
3925 thread
= any_live_thread_of_process (inf
->pid
);
3926 notice_new_inferior (thread
->ptid
,
3927 thread
->state
== THREAD_RUNNING
,
3932 /* If all-stop on top of non-stop, pause all threads. Note this
3933 records the threads' stop pc, so must be done after "noticing"
3937 stop_all_threads ();
3939 /* If all threads of an inferior were already stopped, we
3940 haven't setup the inferior yet. */
3946 if (inf
->needs_setup
)
3948 thread
= any_live_thread_of_process (inf
->pid
);
3949 switch_to_thread_no_regs (thread
);
3955 /* Now go over all threads that are stopped, and print their current
3956 frame. If all-stop, then if there's a signalled thread, pick
3958 ALL_NON_EXITED_THREADS (thread
)
3964 set_running (thread
->ptid
, 0);
3965 else if (thread
->state
!= THREAD_STOPPED
)
3968 if (selected
== NULL
3969 && thread
->suspend
.waitstatus_pending_p
)
3972 if (lowest_stopped
== NULL
3973 || thread
->inf
->num
< lowest_stopped
->inf
->num
3974 || thread
->per_inf_num
< lowest_stopped
->per_inf_num
)
3975 lowest_stopped
= thread
;
3978 print_one_stopped_thread (thread
);
3981 /* In all-stop, we only print the status of one thread, and leave
3982 others with their status pending. */
3987 thread
= lowest_stopped
;
3991 print_one_stopped_thread (thread
);
3994 /* For "info program". */
3995 thread
= inferior_thread ();
3996 if (thread
->state
== THREAD_STOPPED
)
3997 set_last_target_status (inferior_ptid
, thread
->suspend
.waitstatus
);
4000 /* Start the remote connection and sync state. */
4003 remote_start_remote (int from_tty
, struct target_ops
*target
, int extended_p
)
4005 struct remote_state
*rs
= get_remote_state ();
4006 struct packet_config
*noack_config
;
4007 char *wait_status
= NULL
;
4009 /* Signal other parts that we're going through the initial setup,
4010 and so things may not be stable yet. E.g., we don't try to
4011 install tracepoints until we've relocated symbols. Also, a
4012 Ctrl-C before we're connected and synced up can't interrupt the
4013 target. Instead, it offers to drop the (potentially wedged)
4015 rs
->starting_up
= 1;
4019 if (interrupt_on_connect
)
4020 send_interrupt_sequence ();
4022 /* Ack any packet which the remote side has already sent. */
4023 remote_serial_write ("+", 1);
4025 /* The first packet we send to the target is the optional "supported
4026 packets" request. If the target can answer this, it will tell us
4027 which later probes to skip. */
4028 remote_query_supported ();
4030 /* If the stub wants to get a QAllow, compose one and send it. */
4031 if (packet_support (PACKET_QAllow
) != PACKET_DISABLE
)
4032 remote_set_permissions (target
);
4034 /* Next, we possibly activate noack mode.
4036 If the QStartNoAckMode packet configuration is set to AUTO,
4037 enable noack mode if the stub reported a wish for it with
4040 If set to TRUE, then enable noack mode even if the stub didn't
4041 report it in qSupported. If the stub doesn't reply OK, the
4042 session ends with an error.
4044 If FALSE, then don't activate noack mode, regardless of what the
4045 stub claimed should be the default with qSupported. */
4047 noack_config
= &remote_protocol_packets
[PACKET_QStartNoAckMode
];
4048 if (packet_config_support (noack_config
) != PACKET_DISABLE
)
4050 putpkt ("QStartNoAckMode");
4051 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4052 if (packet_ok (rs
->buf
, noack_config
) == PACKET_OK
)
4058 /* Tell the remote that we are using the extended protocol. */
4060 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4063 /* Let the target know which signals it is allowed to pass down to
4065 update_signals_program_target ();
4067 /* Next, if the target can specify a description, read it. We do
4068 this before anything involving memory or registers. */
4069 target_find_description ();
4071 /* Next, now that we know something about the target, update the
4072 address spaces in the program spaces. */
4073 update_address_spaces ();
4075 /* On OSs where the list of libraries is global to all
4076 processes, we fetch them early. */
4077 if (gdbarch_has_global_solist (target_gdbarch ()))
4078 solib_add (NULL
, from_tty
, target
, auto_solib_add
);
4080 if (target_is_non_stop_p ())
4082 if (packet_support (PACKET_QNonStop
) != PACKET_ENABLE
)
4083 error (_("Non-stop mode requested, but remote "
4084 "does not support non-stop"));
4086 putpkt ("QNonStop:1");
4087 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4089 if (strcmp (rs
->buf
, "OK") != 0)
4090 error (_("Remote refused setting non-stop mode with: %s"), rs
->buf
);
4092 /* Find about threads and processes the stub is already
4093 controlling. We default to adding them in the running state.
4094 The '?' query below will then tell us about which threads are
4096 remote_update_thread_list (target
);
4098 else if (packet_support (PACKET_QNonStop
) == PACKET_ENABLE
)
4100 /* Don't assume that the stub can operate in all-stop mode.
4101 Request it explicitly. */
4102 putpkt ("QNonStop:0");
4103 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4105 if (strcmp (rs
->buf
, "OK") != 0)
4106 error (_("Remote refused setting all-stop mode with: %s"), rs
->buf
);
4109 /* Upload TSVs regardless of whether the target is running or not. The
4110 remote stub, such as GDBserver, may have some predefined or builtin
4111 TSVs, even if the target is not running. */
4112 if (remote_get_trace_status (target
, current_trace_status ()) != -1)
4114 struct uploaded_tsv
*uploaded_tsvs
= NULL
;
4116 remote_upload_trace_state_variables (target
, &uploaded_tsvs
);
4117 merge_uploaded_trace_state_variables (&uploaded_tsvs
);
4120 /* Check whether the target is running now. */
4122 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4124 if (!target_is_non_stop_p ())
4126 if (rs
->buf
[0] == 'W' || rs
->buf
[0] == 'X')
4129 error (_("The target is not running (try extended-remote?)"));
4131 /* We're connected, but not running. Drop out before we
4132 call start_remote. */
4133 rs
->starting_up
= 0;
4138 /* Save the reply for later. */
4139 wait_status
= (char *) alloca (strlen (rs
->buf
) + 1);
4140 strcpy (wait_status
, rs
->buf
);
4143 /* Fetch thread list. */
4144 target_update_thread_list ();
4146 /* Let the stub know that we want it to return the thread. */
4147 set_continue_thread (minus_one_ptid
);
4149 if (thread_count () == 0)
4151 /* Target has no concept of threads at all. GDB treats
4152 non-threaded target as single-threaded; add a main
4154 add_current_inferior_and_thread (wait_status
);
4158 /* We have thread information; select the thread the target
4159 says should be current. If we're reconnecting to a
4160 multi-threaded program, this will ideally be the thread
4161 that last reported an event before GDB disconnected. */
4162 inferior_ptid
= get_current_thread (wait_status
);
4163 if (ptid_equal (inferior_ptid
, null_ptid
))
4165 /* Odd... The target was able to list threads, but not
4166 tell us which thread was current (no "thread"
4167 register in T stop reply?). Just pick the first
4168 thread in the thread list then. */
4171 fprintf_unfiltered (gdb_stdlog
,
4172 "warning: couldn't determine remote "
4173 "current thread; picking first in list.\n");
4175 inferior_ptid
= thread_list
->ptid
;
4179 /* init_wait_for_inferior should be called before get_offsets in order
4180 to manage `inserted' flag in bp loc in a correct state.
4181 breakpoint_init_inferior, called from init_wait_for_inferior, set
4182 `inserted' flag to 0, while before breakpoint_re_set, called from
4183 start_remote, set `inserted' flag to 1. In the initialization of
4184 inferior, breakpoint_init_inferior should be called first, and then
4185 breakpoint_re_set can be called. If this order is broken, state of
4186 `inserted' flag is wrong, and cause some problems on breakpoint
4188 init_wait_for_inferior ();
4190 get_offsets (); /* Get text, data & bss offsets. */
4192 /* If we could not find a description using qXfer, and we know
4193 how to do it some other way, try again. This is not
4194 supported for non-stop; it could be, but it is tricky if
4195 there are no stopped threads when we connect. */
4196 if (remote_read_description_p (target
)
4197 && gdbarch_target_desc (target_gdbarch ()) == NULL
)
4199 target_clear_description ();
4200 target_find_description ();
4203 /* Use the previously fetched status. */
4204 gdb_assert (wait_status
!= NULL
);
4205 strcpy (rs
->buf
, wait_status
);
4206 rs
->cached_wait_status
= 1;
4208 start_remote (from_tty
); /* Initialize gdb process mechanisms. */
4212 /* Clear WFI global state. Do this before finding about new
4213 threads and inferiors, and setting the current inferior.
4214 Otherwise we would clear the proceed status of the current
4215 inferior when we want its stop_soon state to be preserved
4216 (see notice_new_inferior). */
4217 init_wait_for_inferior ();
4219 /* In non-stop, we will either get an "OK", meaning that there
4220 are no stopped threads at this time; or, a regular stop
4221 reply. In the latter case, there may be more than one thread
4222 stopped --- we pull them all out using the vStopped
4224 if (strcmp (rs
->buf
, "OK") != 0)
4226 struct notif_client
*notif
= ¬if_client_stop
;
4228 /* remote_notif_get_pending_replies acks this one, and gets
4230 rs
->notif_state
->pending_event
[notif_client_stop
.id
]
4231 = remote_notif_parse (notif
, rs
->buf
);
4232 remote_notif_get_pending_events (notif
);
4235 if (thread_count () == 0)
4238 error (_("The target is not running (try extended-remote?)"));
4240 /* We're connected, but not running. Drop out before we
4241 call start_remote. */
4242 rs
->starting_up
= 0;
4246 /* In non-stop mode, any cached wait status will be stored in
4247 the stop reply queue. */
4248 gdb_assert (wait_status
== NULL
);
4250 /* Report all signals during attach/startup. */
4251 remote_pass_signals (target
, 0, NULL
);
4253 /* If there are already stopped threads, mark them stopped and
4254 report their stops before giving the prompt to the user. */
4255 process_initial_stop_replies (from_tty
);
4257 if (target_can_async_p ())
4261 /* If we connected to a live target, do some additional setup. */
4262 if (target_has_execution
)
4264 if (symfile_objfile
) /* No use without a symbol-file. */
4265 remote_check_symbols ();
4268 /* Possibly the target has been engaged in a trace run started
4269 previously; find out where things are at. */
4270 if (remote_get_trace_status (target
, current_trace_status ()) != -1)
4272 struct uploaded_tp
*uploaded_tps
= NULL
;
4274 if (current_trace_status ()->running
)
4275 printf_filtered (_("Trace is already running on the target.\n"));
4277 remote_upload_tracepoints (target
, &uploaded_tps
);
4279 merge_uploaded_tracepoints (&uploaded_tps
);
4282 /* The thread and inferior lists are now synchronized with the
4283 target, our symbols have been relocated, and we're merged the
4284 target's tracepoints with ours. We're done with basic start
4286 rs
->starting_up
= 0;
4288 /* Maybe breakpoints are global and need to be inserted now. */
4289 if (breakpoints_should_be_inserted_now ())
4290 insert_breakpoints ();
4293 /* Open a connection to a remote debugger.
4294 NAME is the filename used for communication. */
4297 remote_open (const char *name
, int from_tty
)
4299 remote_open_1 (name
, from_tty
, &remote_ops
, 0);
4302 /* Open a connection to a remote debugger using the extended
4303 remote gdb protocol. NAME is the filename used for communication. */
4306 extended_remote_open (const char *name
, int from_tty
)
4308 remote_open_1 (name
, from_tty
, &extended_remote_ops
, 1 /*extended_p */);
4311 /* Reset all packets back to "unknown support". Called when opening a
4312 new connection to a remote target. */
4315 reset_all_packet_configs_support (void)
4319 for (i
= 0; i
< PACKET_MAX
; i
++)
4320 remote_protocol_packets
[i
].support
= PACKET_SUPPORT_UNKNOWN
;
4323 /* Initialize all packet configs. */
4326 init_all_packet_configs (void)
4330 for (i
= 0; i
< PACKET_MAX
; i
++)
4332 remote_protocol_packets
[i
].detect
= AUTO_BOOLEAN_AUTO
;
4333 remote_protocol_packets
[i
].support
= PACKET_SUPPORT_UNKNOWN
;
4337 /* Symbol look-up. */
4340 remote_check_symbols (void)
4342 struct remote_state
*rs
= get_remote_state ();
4343 char *msg
, *reply
, *tmp
;
4346 struct cleanup
*old_chain
;
4348 /* The remote side has no concept of inferiors that aren't running
4349 yet, it only knows about running processes. If we're connected
4350 but our current inferior is not running, we should not invite the
4351 remote target to request symbol lookups related to its
4352 (unrelated) current process. */
4353 if (!target_has_execution
)
4356 if (packet_support (PACKET_qSymbol
) == PACKET_DISABLE
)
4359 /* Make sure the remote is pointing at the right process. Note
4360 there's no way to select "no process". */
4361 set_general_process ();
4363 /* Allocate a message buffer. We can't reuse the input buffer in RS,
4364 because we need both at the same time. */
4365 msg
= (char *) xmalloc (get_remote_packet_size ());
4366 old_chain
= make_cleanup (xfree
, msg
);
4367 reply
= (char *) xmalloc (get_remote_packet_size ());
4368 make_cleanup (free_current_contents
, &reply
);
4369 reply_size
= get_remote_packet_size ();
4371 /* Invite target to request symbol lookups. */
4373 putpkt ("qSymbol::");
4374 getpkt (&reply
, &reply_size
, 0);
4375 packet_ok (reply
, &remote_protocol_packets
[PACKET_qSymbol
]);
4377 while (startswith (reply
, "qSymbol:"))
4379 struct bound_minimal_symbol sym
;
4382 end
= hex2bin (tmp
, (gdb_byte
*) msg
, strlen (tmp
) / 2);
4384 sym
= lookup_minimal_symbol (msg
, NULL
, NULL
);
4385 if (sym
.minsym
== NULL
)
4386 xsnprintf (msg
, get_remote_packet_size (), "qSymbol::%s", &reply
[8]);
4389 int addr_size
= gdbarch_addr_bit (target_gdbarch ()) / 8;
4390 CORE_ADDR sym_addr
= BMSYMBOL_VALUE_ADDRESS (sym
);
4392 /* If this is a function address, return the start of code
4393 instead of any data function descriptor. */
4394 sym_addr
= gdbarch_convert_from_func_ptr_addr (target_gdbarch (),
4398 xsnprintf (msg
, get_remote_packet_size (), "qSymbol:%s:%s",
4399 phex_nz (sym_addr
, addr_size
), &reply
[8]);
4403 getpkt (&reply
, &reply_size
, 0);
4406 do_cleanups (old_chain
);
4409 static struct serial
*
4410 remote_serial_open (const char *name
)
4412 static int udp_warning
= 0;
4414 /* FIXME: Parsing NAME here is a hack. But we want to warn here instead
4415 of in ser-tcp.c, because it is the remote protocol assuming that the
4416 serial connection is reliable and not the serial connection promising
4418 if (!udp_warning
&& startswith (name
, "udp:"))
4420 warning (_("The remote protocol may be unreliable over UDP.\n"
4421 "Some events may be lost, rendering further debugging "
4426 return serial_open (name
);
4429 /* Inform the target of our permission settings. The permission flags
4430 work without this, but if the target knows the settings, it can do
4431 a couple things. First, it can add its own check, to catch cases
4432 that somehow manage to get by the permissions checks in target
4433 methods. Second, if the target is wired to disallow particular
4434 settings (for instance, a system in the field that is not set up to
4435 be able to stop at a breakpoint), it can object to any unavailable
4439 remote_set_permissions (struct target_ops
*self
)
4441 struct remote_state
*rs
= get_remote_state ();
4443 xsnprintf (rs
->buf
, get_remote_packet_size (), "QAllow:"
4444 "WriteReg:%x;WriteMem:%x;"
4445 "InsertBreak:%x;InsertTrace:%x;"
4446 "InsertFastTrace:%x;Stop:%x",
4447 may_write_registers
, may_write_memory
,
4448 may_insert_breakpoints
, may_insert_tracepoints
,
4449 may_insert_fast_tracepoints
, may_stop
);
4451 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4453 /* If the target didn't like the packet, warn the user. Do not try
4454 to undo the user's settings, that would just be maddening. */
4455 if (strcmp (rs
->buf
, "OK") != 0)
4456 warning (_("Remote refused setting permissions with: %s"), rs
->buf
);
4459 /* This type describes each known response to the qSupported
4461 struct protocol_feature
4463 /* The name of this protocol feature. */
4466 /* The default for this protocol feature. */
4467 enum packet_support default_support
;
4469 /* The function to call when this feature is reported, or after
4470 qSupported processing if the feature is not supported.
4471 The first argument points to this structure. The second
4472 argument indicates whether the packet requested support be
4473 enabled, disabled, or probed (or the default, if this function
4474 is being called at the end of processing and this feature was
4475 not reported). The third argument may be NULL; if not NULL, it
4476 is a NUL-terminated string taken from the packet following
4477 this feature's name and an equals sign. */
4478 void (*func
) (const struct protocol_feature
*, enum packet_support
,
4481 /* The corresponding packet for this feature. Only used if
4482 FUNC is remote_supported_packet. */
4487 remote_supported_packet (const struct protocol_feature
*feature
,
4488 enum packet_support support
,
4489 const char *argument
)
4493 warning (_("Remote qSupported response supplied an unexpected value for"
4494 " \"%s\"."), feature
->name
);
4498 remote_protocol_packets
[feature
->packet
].support
= support
;
4502 remote_packet_size (const struct protocol_feature
*feature
,
4503 enum packet_support support
, const char *value
)
4505 struct remote_state
*rs
= get_remote_state ();
4510 if (support
!= PACKET_ENABLE
)
4513 if (value
== NULL
|| *value
== '\0')
4515 warning (_("Remote target reported \"%s\" without a size."),
4521 packet_size
= strtol (value
, &value_end
, 16);
4522 if (errno
!= 0 || *value_end
!= '\0' || packet_size
< 0)
4524 warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."),
4525 feature
->name
, value
);
4529 /* Record the new maximum packet size. */
4530 rs
->explicit_packet_size
= packet_size
;
4533 static const struct protocol_feature remote_protocol_features
[] = {
4534 { "PacketSize", PACKET_DISABLE
, remote_packet_size
, -1 },
4535 { "qXfer:auxv:read", PACKET_DISABLE
, remote_supported_packet
,
4536 PACKET_qXfer_auxv
},
4537 { "qXfer:exec-file:read", PACKET_DISABLE
, remote_supported_packet
,
4538 PACKET_qXfer_exec_file
},
4539 { "qXfer:features:read", PACKET_DISABLE
, remote_supported_packet
,
4540 PACKET_qXfer_features
},
4541 { "qXfer:libraries:read", PACKET_DISABLE
, remote_supported_packet
,
4542 PACKET_qXfer_libraries
},
4543 { "qXfer:libraries-svr4:read", PACKET_DISABLE
, remote_supported_packet
,
4544 PACKET_qXfer_libraries_svr4
},
4545 { "augmented-libraries-svr4-read", PACKET_DISABLE
,
4546 remote_supported_packet
, PACKET_augmented_libraries_svr4_read_feature
},
4547 { "qXfer:memory-map:read", PACKET_DISABLE
, remote_supported_packet
,
4548 PACKET_qXfer_memory_map
},
4549 { "qXfer:spu:read", PACKET_DISABLE
, remote_supported_packet
,
4550 PACKET_qXfer_spu_read
},
4551 { "qXfer:spu:write", PACKET_DISABLE
, remote_supported_packet
,
4552 PACKET_qXfer_spu_write
},
4553 { "qXfer:osdata:read", PACKET_DISABLE
, remote_supported_packet
,
4554 PACKET_qXfer_osdata
},
4555 { "qXfer:threads:read", PACKET_DISABLE
, remote_supported_packet
,
4556 PACKET_qXfer_threads
},
4557 { "qXfer:traceframe-info:read", PACKET_DISABLE
, remote_supported_packet
,
4558 PACKET_qXfer_traceframe_info
},
4559 { "QPassSignals", PACKET_DISABLE
, remote_supported_packet
,
4560 PACKET_QPassSignals
},
4561 { "QCatchSyscalls", PACKET_DISABLE
, remote_supported_packet
,
4562 PACKET_QCatchSyscalls
},
4563 { "QProgramSignals", PACKET_DISABLE
, remote_supported_packet
,
4564 PACKET_QProgramSignals
},
4565 { "QStartNoAckMode", PACKET_DISABLE
, remote_supported_packet
,
4566 PACKET_QStartNoAckMode
},
4567 { "multiprocess", PACKET_DISABLE
, remote_supported_packet
,
4568 PACKET_multiprocess_feature
},
4569 { "QNonStop", PACKET_DISABLE
, remote_supported_packet
, PACKET_QNonStop
},
4570 { "qXfer:siginfo:read", PACKET_DISABLE
, remote_supported_packet
,
4571 PACKET_qXfer_siginfo_read
},
4572 { "qXfer:siginfo:write", PACKET_DISABLE
, remote_supported_packet
,
4573 PACKET_qXfer_siginfo_write
},
4574 { "ConditionalTracepoints", PACKET_DISABLE
, remote_supported_packet
,
4575 PACKET_ConditionalTracepoints
},
4576 { "ConditionalBreakpoints", PACKET_DISABLE
, remote_supported_packet
,
4577 PACKET_ConditionalBreakpoints
},
4578 { "BreakpointCommands", PACKET_DISABLE
, remote_supported_packet
,
4579 PACKET_BreakpointCommands
},
4580 { "FastTracepoints", PACKET_DISABLE
, remote_supported_packet
,
4581 PACKET_FastTracepoints
},
4582 { "StaticTracepoints", PACKET_DISABLE
, remote_supported_packet
,
4583 PACKET_StaticTracepoints
},
4584 {"InstallInTrace", PACKET_DISABLE
, remote_supported_packet
,
4585 PACKET_InstallInTrace
},
4586 { "DisconnectedTracing", PACKET_DISABLE
, remote_supported_packet
,
4587 PACKET_DisconnectedTracing_feature
},
4588 { "ReverseContinue", PACKET_DISABLE
, remote_supported_packet
,
4590 { "ReverseStep", PACKET_DISABLE
, remote_supported_packet
,
4592 { "TracepointSource", PACKET_DISABLE
, remote_supported_packet
,
4593 PACKET_TracepointSource
},
4594 { "QAllow", PACKET_DISABLE
, remote_supported_packet
,
4596 { "EnableDisableTracepoints", PACKET_DISABLE
, remote_supported_packet
,
4597 PACKET_EnableDisableTracepoints_feature
},
4598 { "qXfer:fdpic:read", PACKET_DISABLE
, remote_supported_packet
,
4599 PACKET_qXfer_fdpic
},
4600 { "qXfer:uib:read", PACKET_DISABLE
, remote_supported_packet
,
4602 { "QDisableRandomization", PACKET_DISABLE
, remote_supported_packet
,
4603 PACKET_QDisableRandomization
},
4604 { "QAgent", PACKET_DISABLE
, remote_supported_packet
, PACKET_QAgent
},
4605 { "QTBuffer:size", PACKET_DISABLE
,
4606 remote_supported_packet
, PACKET_QTBuffer_size
},
4607 { "tracenz", PACKET_DISABLE
, remote_supported_packet
, PACKET_tracenz_feature
},
4608 { "Qbtrace:off", PACKET_DISABLE
, remote_supported_packet
, PACKET_Qbtrace_off
},
4609 { "Qbtrace:bts", PACKET_DISABLE
, remote_supported_packet
, PACKET_Qbtrace_bts
},
4610 { "Qbtrace:pt", PACKET_DISABLE
, remote_supported_packet
, PACKET_Qbtrace_pt
},
4611 { "qXfer:btrace:read", PACKET_DISABLE
, remote_supported_packet
,
4612 PACKET_qXfer_btrace
},
4613 { "qXfer:btrace-conf:read", PACKET_DISABLE
, remote_supported_packet
,
4614 PACKET_qXfer_btrace_conf
},
4615 { "Qbtrace-conf:bts:size", PACKET_DISABLE
, remote_supported_packet
,
4616 PACKET_Qbtrace_conf_bts_size
},
4617 { "swbreak", PACKET_DISABLE
, remote_supported_packet
, PACKET_swbreak_feature
},
4618 { "hwbreak", PACKET_DISABLE
, remote_supported_packet
, PACKET_hwbreak_feature
},
4619 { "fork-events", PACKET_DISABLE
, remote_supported_packet
,
4620 PACKET_fork_event_feature
},
4621 { "vfork-events", PACKET_DISABLE
, remote_supported_packet
,
4622 PACKET_vfork_event_feature
},
4623 { "exec-events", PACKET_DISABLE
, remote_supported_packet
,
4624 PACKET_exec_event_feature
},
4625 { "Qbtrace-conf:pt:size", PACKET_DISABLE
, remote_supported_packet
,
4626 PACKET_Qbtrace_conf_pt_size
},
4627 { "vContSupported", PACKET_DISABLE
, remote_supported_packet
, PACKET_vContSupported
},
4628 { "QThreadEvents", PACKET_DISABLE
, remote_supported_packet
, PACKET_QThreadEvents
},
4629 { "no-resumed", PACKET_DISABLE
, remote_supported_packet
, PACKET_no_resumed
},
4632 static char *remote_support_xml
;
4634 /* Register string appended to "xmlRegisters=" in qSupported query. */
4637 register_remote_support_xml (const char *xml
)
4639 #if defined(HAVE_LIBEXPAT)
4640 if (remote_support_xml
== NULL
)
4641 remote_support_xml
= concat ("xmlRegisters=", xml
, (char *) NULL
);
4644 char *copy
= xstrdup (remote_support_xml
+ 13);
4645 char *p
= strtok (copy
, ",");
4649 if (strcmp (p
, xml
) == 0)
4656 while ((p
= strtok (NULL
, ",")) != NULL
);
4659 remote_support_xml
= reconcat (remote_support_xml
,
4660 remote_support_xml
, ",", xml
,
4667 remote_query_supported_append (char *msg
, const char *append
)
4670 return reconcat (msg
, msg
, ";", append
, (char *) NULL
);
4672 return xstrdup (append
);
4676 remote_query_supported (void)
4678 struct remote_state
*rs
= get_remote_state ();
4681 unsigned char seen
[ARRAY_SIZE (remote_protocol_features
)];
4683 /* The packet support flags are handled differently for this packet
4684 than for most others. We treat an error, a disabled packet, and
4685 an empty response identically: any features which must be reported
4686 to be used will be automatically disabled. An empty buffer
4687 accomplishes this, since that is also the representation for a list
4688 containing no features. */
4691 if (packet_support (PACKET_qSupported
) != PACKET_DISABLE
)
4694 struct cleanup
*old_chain
= make_cleanup (free_current_contents
, &q
);
4696 if (packet_set_cmd_state (PACKET_multiprocess_feature
) != AUTO_BOOLEAN_FALSE
)
4697 q
= remote_query_supported_append (q
, "multiprocess+");
4699 if (packet_set_cmd_state (PACKET_swbreak_feature
) != AUTO_BOOLEAN_FALSE
)
4700 q
= remote_query_supported_append (q
, "swbreak+");
4701 if (packet_set_cmd_state (PACKET_hwbreak_feature
) != AUTO_BOOLEAN_FALSE
)
4702 q
= remote_query_supported_append (q
, "hwbreak+");
4704 q
= remote_query_supported_append (q
, "qRelocInsn+");
4706 if (packet_set_cmd_state (PACKET_fork_event_feature
)
4707 != AUTO_BOOLEAN_FALSE
)
4708 q
= remote_query_supported_append (q
, "fork-events+");
4709 if (packet_set_cmd_state (PACKET_vfork_event_feature
)
4710 != AUTO_BOOLEAN_FALSE
)
4711 q
= remote_query_supported_append (q
, "vfork-events+");
4712 if (packet_set_cmd_state (PACKET_exec_event_feature
)
4713 != AUTO_BOOLEAN_FALSE
)
4714 q
= remote_query_supported_append (q
, "exec-events+");
4716 if (packet_set_cmd_state (PACKET_vContSupported
) != AUTO_BOOLEAN_FALSE
)
4717 q
= remote_query_supported_append (q
, "vContSupported+");
4719 if (packet_set_cmd_state (PACKET_QThreadEvents
) != AUTO_BOOLEAN_FALSE
)
4720 q
= remote_query_supported_append (q
, "QThreadEvents+");
4722 if (packet_set_cmd_state (PACKET_no_resumed
) != AUTO_BOOLEAN_FALSE
)
4723 q
= remote_query_supported_append (q
, "no-resumed+");
4725 /* Keep this one last to work around a gdbserver <= 7.10 bug in
4726 the qSupported:xmlRegisters=i386 handling. */
4727 if (remote_support_xml
!= NULL
)
4728 q
= remote_query_supported_append (q
, remote_support_xml
);
4730 q
= reconcat (q
, "qSupported:", q
, (char *) NULL
);
4733 do_cleanups (old_chain
);
4735 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4737 /* If an error occured, warn, but do not return - just reset the
4738 buffer to empty and go on to disable features. */
4739 if (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_qSupported
])
4742 warning (_("Remote failure reply: %s"), rs
->buf
);
4747 memset (seen
, 0, sizeof (seen
));
4752 enum packet_support is_supported
;
4753 char *p
, *end
, *name_end
, *value
;
4755 /* First separate out this item from the rest of the packet. If
4756 there's another item after this, we overwrite the separator
4757 (terminated strings are much easier to work with). */
4759 end
= strchr (p
, ';');
4762 end
= p
+ strlen (p
);
4772 warning (_("empty item in \"qSupported\" response"));
4777 name_end
= strchr (p
, '=');
4780 /* This is a name=value entry. */
4781 is_supported
= PACKET_ENABLE
;
4782 value
= name_end
+ 1;
4791 is_supported
= PACKET_ENABLE
;
4795 is_supported
= PACKET_DISABLE
;
4799 is_supported
= PACKET_SUPPORT_UNKNOWN
;
4803 warning (_("unrecognized item \"%s\" "
4804 "in \"qSupported\" response"), p
);
4810 for (i
= 0; i
< ARRAY_SIZE (remote_protocol_features
); i
++)
4811 if (strcmp (remote_protocol_features
[i
].name
, p
) == 0)
4813 const struct protocol_feature
*feature
;
4816 feature
= &remote_protocol_features
[i
];
4817 feature
->func (feature
, is_supported
, value
);
4822 /* If we increased the packet size, make sure to increase the global
4823 buffer size also. We delay this until after parsing the entire
4824 qSupported packet, because this is the same buffer we were
4826 if (rs
->buf_size
< rs
->explicit_packet_size
)
4828 rs
->buf_size
= rs
->explicit_packet_size
;
4829 rs
->buf
= (char *) xrealloc (rs
->buf
, rs
->buf_size
);
4832 /* Handle the defaults for unmentioned features. */
4833 for (i
= 0; i
< ARRAY_SIZE (remote_protocol_features
); i
++)
4836 const struct protocol_feature
*feature
;
4838 feature
= &remote_protocol_features
[i
];
4839 feature
->func (feature
, feature
->default_support
, NULL
);
4843 /* Serial QUIT handler for the remote serial descriptor.
4845 Defers handling a Ctrl-C until we're done with the current
4846 command/response packet sequence, unless:
4848 - We're setting up the connection. Don't send a remote interrupt
4849 request, as we're not fully synced yet. Quit immediately
4852 - The target has been resumed in the foreground
4853 (target_terminal_is_ours is false) with a synchronous resume
4854 packet, and we're blocked waiting for the stop reply, thus a
4855 Ctrl-C should be immediately sent to the target.
4857 - We get a second Ctrl-C while still within the same serial read or
4858 write. In that case the serial is seemingly wedged --- offer to
4861 - We see a second Ctrl-C without target response, after having
4862 previously interrupted the target. In that case the target/stub
4863 is probably wedged --- offer to quit/disconnect.
4867 remote_serial_quit_handler (void)
4869 struct remote_state
*rs
= get_remote_state ();
4871 if (check_quit_flag ())
4873 /* If we're starting up, we're not fully synced yet. Quit
4875 if (rs
->starting_up
)
4877 else if (rs
->got_ctrlc_during_io
)
4879 if (query (_("The target is not responding to GDB commands.\n"
4880 "Stop debugging it? ")))
4881 remote_unpush_and_throw ();
4883 /* If ^C has already been sent once, offer to disconnect. */
4884 else if (!target_terminal_is_ours () && rs
->ctrlc_pending_p
)
4886 /* All-stop protocol, and blocked waiting for stop reply. Send
4887 an interrupt request. */
4888 else if (!target_terminal_is_ours () && rs
->waiting_for_stop_reply
)
4889 target_interrupt (inferior_ptid
);
4891 rs
->got_ctrlc_during_io
= 1;
4895 /* Remove any of the remote.c targets from target stack. Upper targets depend
4896 on it so remove them first. */
4899 remote_unpush_target (void)
4901 pop_all_targets_at_and_above (process_stratum
);
4905 remote_unpush_and_throw (void)
4907 remote_unpush_target ();
4908 throw_error (TARGET_CLOSE_ERROR
, _("Disconnected from target."));
4912 remote_open_1 (const char *name
, int from_tty
,
4913 struct target_ops
*target
, int extended_p
)
4915 struct remote_state
*rs
= get_remote_state ();
4918 error (_("To open a remote debug connection, you need to specify what\n"
4919 "serial device is attached to the remote system\n"
4920 "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."));
4922 /* See FIXME above. */
4923 if (!target_async_permitted
)
4924 wait_forever_enabled_p
= 1;
4926 /* If we're connected to a running target, target_preopen will kill it.
4927 Ask this question first, before target_preopen has a chance to kill
4929 if (rs
->remote_desc
!= NULL
&& !have_inferiors ())
4932 && !query (_("Already connected to a remote target. Disconnect? ")))
4933 error (_("Still connected."));
4936 /* Here the possibly existing remote target gets unpushed. */
4937 target_preopen (from_tty
);
4939 /* Make sure we send the passed signals list the next time we resume. */
4940 xfree (rs
->last_pass_packet
);
4941 rs
->last_pass_packet
= NULL
;
4943 /* Make sure we send the program signals list the next time we
4945 xfree (rs
->last_program_signals_packet
);
4946 rs
->last_program_signals_packet
= NULL
;
4948 remote_fileio_reset ();
4949 reopen_exec_file ();
4952 rs
->remote_desc
= remote_serial_open (name
);
4953 if (!rs
->remote_desc
)
4954 perror_with_name (name
);
4956 if (baud_rate
!= -1)
4958 if (serial_setbaudrate (rs
->remote_desc
, baud_rate
))
4960 /* The requested speed could not be set. Error out to
4961 top level after closing remote_desc. Take care to
4962 set remote_desc to NULL to avoid closing remote_desc
4964 serial_close (rs
->remote_desc
);
4965 rs
->remote_desc
= NULL
;
4966 perror_with_name (name
);
4970 serial_setparity (rs
->remote_desc
, serial_parity
);
4971 serial_raw (rs
->remote_desc
);
4973 /* If there is something sitting in the buffer we might take it as a
4974 response to a command, which would be bad. */
4975 serial_flush_input (rs
->remote_desc
);
4979 puts_filtered ("Remote debugging using ");
4980 puts_filtered (name
);
4981 puts_filtered ("\n");
4983 push_target (target
); /* Switch to using remote target now. */
4985 /* Register extra event sources in the event loop. */
4986 remote_async_inferior_event_token
4987 = create_async_event_handler (remote_async_inferior_event_handler
,
4989 rs
->notif_state
= remote_notif_state_allocate ();
4991 /* Reset the target state; these things will be queried either by
4992 remote_query_supported or as they are needed. */
4993 reset_all_packet_configs_support ();
4994 rs
->cached_wait_status
= 0;
4995 rs
->explicit_packet_size
= 0;
4997 rs
->extended
= extended_p
;
4998 rs
->waiting_for_stop_reply
= 0;
4999 rs
->ctrlc_pending_p
= 0;
5000 rs
->got_ctrlc_during_io
= 0;
5002 rs
->general_thread
= not_sent_ptid
;
5003 rs
->continue_thread
= not_sent_ptid
;
5004 rs
->remote_traceframe_number
= -1;
5006 rs
->last_resume_exec_dir
= EXEC_FORWARD
;
5008 /* Probe for ability to use "ThreadInfo" query, as required. */
5009 rs
->use_threadinfo_query
= 1;
5010 rs
->use_threadextra_query
= 1;
5012 readahead_cache_invalidate ();
5014 /* Start out by owning the terminal. */
5015 remote_async_terminal_ours_p
= 1;
5017 if (target_async_permitted
)
5019 /* FIXME: cagney/1999-09-23: During the initial connection it is
5020 assumed that the target is already ready and able to respond to
5021 requests. Unfortunately remote_start_remote() eventually calls
5022 wait_for_inferior() with no timeout. wait_forever_enabled_p gets
5023 around this. Eventually a mechanism that allows
5024 wait_for_inferior() to expect/get timeouts will be
5026 wait_forever_enabled_p
= 0;
5029 /* First delete any symbols previously loaded from shared libraries. */
5030 no_shared_libraries (NULL
, 0);
5033 init_thread_list ();
5035 /* Start the remote connection. If error() or QUIT, discard this
5036 target (we'd otherwise be in an inconsistent state) and then
5037 propogate the error on up the exception chain. This ensures that
5038 the caller doesn't stumble along blindly assuming that the
5039 function succeeded. The CLI doesn't have this problem but other
5040 UI's, such as MI do.
5042 FIXME: cagney/2002-05-19: Instead of re-throwing the exception,
5043 this function should return an error indication letting the
5044 caller restore the previous state. Unfortunately the command
5045 ``target remote'' is directly wired to this function making that
5046 impossible. On a positive note, the CLI side of this problem has
5047 been fixed - the function set_cmd_context() makes it possible for
5048 all the ``target ....'' commands to share a common callback
5049 function. See cli-dump.c. */
5054 remote_start_remote (from_tty
, target
, extended_p
);
5056 CATCH (ex
, RETURN_MASK_ALL
)
5058 /* Pop the partially set up target - unless something else did
5059 already before throwing the exception. */
5060 if (rs
->remote_desc
!= NULL
)
5061 remote_unpush_target ();
5062 if (target_async_permitted
)
5063 wait_forever_enabled_p
= 1;
5064 throw_exception (ex
);
5069 remote_btrace_reset ();
5071 if (target_async_permitted
)
5072 wait_forever_enabled_p
= 1;
5075 /* Detach the specified process. */
5078 remote_detach_pid (int pid
)
5080 struct remote_state
*rs
= get_remote_state ();
5082 if (remote_multi_process_p (rs
))
5083 xsnprintf (rs
->buf
, get_remote_packet_size (), "D;%x", pid
);
5085 strcpy (rs
->buf
, "D");
5088 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5090 if (rs
->buf
[0] == 'O' && rs
->buf
[1] == 'K')
5092 else if (rs
->buf
[0] == '\0')
5093 error (_("Remote doesn't know how to detach"));
5095 error (_("Can't detach process."));
5098 /* This detaches a program to which we previously attached, using
5099 inferior_ptid to identify the process. After this is done, GDB
5100 can be used to debug some other program. We better not have left
5101 any breakpoints in the target program or it'll die when it hits
5105 remote_detach_1 (const char *args
, int from_tty
)
5107 int pid
= ptid_get_pid (inferior_ptid
);
5108 struct remote_state
*rs
= get_remote_state ();
5109 struct thread_info
*tp
= find_thread_ptid (inferior_ptid
);
5113 error (_("Argument given to \"detach\" when remotely debugging."));
5115 if (!target_has_execution
)
5116 error (_("No process to detach from."));
5120 char *exec_file
= get_exec_file (0);
5121 if (exec_file
== NULL
)
5123 printf_unfiltered (_("Detaching from program: %s, %s\n"), exec_file
,
5124 target_pid_to_str (pid_to_ptid (pid
)));
5125 gdb_flush (gdb_stdout
);
5128 /* Tell the remote target to detach. */
5129 remote_detach_pid (pid
);
5131 /* Exit only if this is the only active inferior. */
5132 if (from_tty
&& !rs
->extended
&& number_of_live_inferiors () == 1)
5133 puts_filtered (_("Ending remote debugging.\n"));
5135 /* Check to see if we are detaching a fork parent. Note that if we
5136 are detaching a fork child, tp == NULL. */
5137 is_fork_parent
= (tp
!= NULL
5138 && tp
->pending_follow
.kind
== TARGET_WAITKIND_FORKED
);
5140 /* If doing detach-on-fork, we don't mourn, because that will delete
5141 breakpoints that should be available for the followed inferior. */
5142 if (!is_fork_parent
)
5143 target_mourn_inferior ();
5146 inferior_ptid
= null_ptid
;
5147 detach_inferior (pid
);
5152 remote_detach (struct target_ops
*ops
, const char *args
, int from_tty
)
5154 remote_detach_1 (args
, from_tty
);
5158 extended_remote_detach (struct target_ops
*ops
, const char *args
, int from_tty
)
5160 remote_detach_1 (args
, from_tty
);
5163 /* Target follow-fork function for remote targets. On entry, and
5164 at return, the current inferior is the fork parent.
5166 Note that although this is currently only used for extended-remote,
5167 it is named remote_follow_fork in anticipation of using it for the
5168 remote target as well. */
5171 remote_follow_fork (struct target_ops
*ops
, int follow_child
,
5174 struct remote_state
*rs
= get_remote_state ();
5175 enum target_waitkind kind
= inferior_thread ()->pending_follow
.kind
;
5177 if ((kind
== TARGET_WAITKIND_FORKED
&& remote_fork_event_p (rs
))
5178 || (kind
== TARGET_WAITKIND_VFORKED
&& remote_vfork_event_p (rs
)))
5180 /* When following the parent and detaching the child, we detach
5181 the child here. For the case of following the child and
5182 detaching the parent, the detach is done in the target-
5183 independent follow fork code in infrun.c. We can't use
5184 target_detach when detaching an unfollowed child because
5185 the client side doesn't know anything about the child. */
5186 if (detach_fork
&& !follow_child
)
5188 /* Detach the fork child. */
5192 child_ptid
= inferior_thread ()->pending_follow
.value
.related_pid
;
5193 child_pid
= ptid_get_pid (child_ptid
);
5195 remote_detach_pid (child_pid
);
5196 detach_inferior (child_pid
);
5202 /* Target follow-exec function for remote targets. Save EXECD_PATHNAME
5203 in the program space of the new inferior. On entry and at return the
5204 current inferior is the exec'ing inferior. INF is the new exec'd
5205 inferior, which may be the same as the exec'ing inferior unless
5206 follow-exec-mode is "new". */
5209 remote_follow_exec (struct target_ops
*ops
,
5210 struct inferior
*inf
, char *execd_pathname
)
5212 /* We know that this is a target file name, so if it has the "target:"
5213 prefix we strip it off before saving it in the program space. */
5214 if (is_target_filename (execd_pathname
))
5215 execd_pathname
+= strlen (TARGET_SYSROOT_PREFIX
);
5217 set_pspace_remote_exec_file (inf
->pspace
, execd_pathname
);
5220 /* Same as remote_detach, but don't send the "D" packet; just disconnect. */
5223 remote_disconnect (struct target_ops
*target
, const char *args
, int from_tty
)
5226 error (_("Argument given to \"disconnect\" when remotely debugging."));
5228 /* Make sure we unpush even the extended remote targets. Calling
5229 target_mourn_inferior won't unpush, and remote_mourn won't
5230 unpush if there is more than one inferior left. */
5231 unpush_target (target
);
5232 generic_mourn_inferior ();
5235 puts_filtered ("Ending remote debugging.\n");
5238 /* Attach to the process specified by ARGS. If FROM_TTY is non-zero,
5239 be chatty about it. */
5242 extended_remote_attach (struct target_ops
*target
, const char *args
,
5245 struct remote_state
*rs
= get_remote_state ();
5247 char *wait_status
= NULL
;
5249 pid
= parse_pid_to_attach (args
);
5251 /* Remote PID can be freely equal to getpid, do not check it here the same
5252 way as in other targets. */
5254 if (packet_support (PACKET_vAttach
) == PACKET_DISABLE
)
5255 error (_("This target does not support attaching to a process"));
5259 char *exec_file
= get_exec_file (0);
5262 printf_unfiltered (_("Attaching to program: %s, %s\n"), exec_file
,
5263 target_pid_to_str (pid_to_ptid (pid
)));
5265 printf_unfiltered (_("Attaching to %s\n"),
5266 target_pid_to_str (pid_to_ptid (pid
)));
5268 gdb_flush (gdb_stdout
);
5271 xsnprintf (rs
->buf
, get_remote_packet_size (), "vAttach;%x", pid
);
5273 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5275 switch (packet_ok (rs
->buf
,
5276 &remote_protocol_packets
[PACKET_vAttach
]))
5279 if (!target_is_non_stop_p ())
5281 /* Save the reply for later. */
5282 wait_status
= (char *) alloca (strlen (rs
->buf
) + 1);
5283 strcpy (wait_status
, rs
->buf
);
5285 else if (strcmp (rs
->buf
, "OK") != 0)
5286 error (_("Attaching to %s failed with: %s"),
5287 target_pid_to_str (pid_to_ptid (pid
)),
5290 case PACKET_UNKNOWN
:
5291 error (_("This target does not support attaching to a process"));
5293 error (_("Attaching to %s failed"),
5294 target_pid_to_str (pid_to_ptid (pid
)));
5297 set_current_inferior (remote_add_inferior (0, pid
, 1, 0));
5299 inferior_ptid
= pid_to_ptid (pid
);
5301 if (target_is_non_stop_p ())
5303 struct thread_info
*thread
;
5305 /* Get list of threads. */
5306 remote_update_thread_list (target
);
5308 thread
= first_thread_of_process (pid
);
5310 inferior_ptid
= thread
->ptid
;
5312 inferior_ptid
= pid_to_ptid (pid
);
5314 /* Invalidate our notion of the remote current thread. */
5315 record_currthread (rs
, minus_one_ptid
);
5319 /* Now, if we have thread information, update inferior_ptid. */
5320 inferior_ptid
= remote_current_thread (inferior_ptid
);
5322 /* Add the main thread to the thread list. */
5323 add_thread_silent (inferior_ptid
);
5326 /* Next, if the target can specify a description, read it. We do
5327 this before anything involving memory or registers. */
5328 target_find_description ();
5330 if (!target_is_non_stop_p ())
5332 /* Use the previously fetched status. */
5333 gdb_assert (wait_status
!= NULL
);
5335 if (target_can_async_p ())
5337 struct notif_event
*reply
5338 = remote_notif_parse (¬if_client_stop
, wait_status
);
5340 push_stop_reply ((struct stop_reply
*) reply
);
5346 gdb_assert (wait_status
!= NULL
);
5347 strcpy (rs
->buf
, wait_status
);
5348 rs
->cached_wait_status
= 1;
5352 gdb_assert (wait_status
== NULL
);
5355 /* Implementation of the to_post_attach method. */
5358 extended_remote_post_attach (struct target_ops
*ops
, int pid
)
5360 /* Get text, data & bss offsets. */
5363 /* In certain cases GDB might not have had the chance to start
5364 symbol lookup up until now. This could happen if the debugged
5365 binary is not using shared libraries, the vsyscall page is not
5366 present (on Linux) and the binary itself hadn't changed since the
5367 debugging process was started. */
5368 if (symfile_objfile
!= NULL
)
5369 remote_check_symbols();
5373 /* Check for the availability of vCont. This function should also check
5377 remote_vcont_probe (struct remote_state
*rs
)
5381 strcpy (rs
->buf
, "vCont?");
5383 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5386 /* Make sure that the features we assume are supported. */
5387 if (startswith (buf
, "vCont"))
5390 int support_c
, support_C
;
5392 rs
->supports_vCont
.s
= 0;
5393 rs
->supports_vCont
.S
= 0;
5396 rs
->supports_vCont
.t
= 0;
5397 rs
->supports_vCont
.r
= 0;
5398 while (p
&& *p
== ';')
5401 if (*p
== 's' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
5402 rs
->supports_vCont
.s
= 1;
5403 else if (*p
== 'S' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
5404 rs
->supports_vCont
.S
= 1;
5405 else if (*p
== 'c' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
5407 else if (*p
== 'C' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
5409 else if (*p
== 't' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
5410 rs
->supports_vCont
.t
= 1;
5411 else if (*p
== 'r' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
5412 rs
->supports_vCont
.r
= 1;
5414 p
= strchr (p
, ';');
5417 /* If c, and C are not all supported, we can't use vCont. Clearing
5418 BUF will make packet_ok disable the packet. */
5419 if (!support_c
|| !support_C
)
5423 packet_ok (buf
, &remote_protocol_packets
[PACKET_vCont
]);
5426 /* Helper function for building "vCont" resumptions. Write a
5427 resumption to P. ENDP points to one-passed-the-end of the buffer
5428 we're allowed to write to. Returns BUF+CHARACTERS_WRITTEN. The
5429 thread to be resumed is PTID; STEP and SIGGNAL indicate whether the
5430 resumed thread should be single-stepped and/or signalled. If PTID
5431 equals minus_one_ptid, then all threads are resumed; if PTID
5432 represents a process, then all threads of the process are resumed;
5433 the thread to be stepped and/or signalled is given in the global
5437 append_resumption (char *p
, char *endp
,
5438 ptid_t ptid
, int step
, enum gdb_signal siggnal
)
5440 struct remote_state
*rs
= get_remote_state ();
5442 if (step
&& siggnal
!= GDB_SIGNAL_0
)
5443 p
+= xsnprintf (p
, endp
- p
, ";S%02x", siggnal
);
5445 /* GDB is willing to range step. */
5446 && use_range_stepping
5447 /* Target supports range stepping. */
5448 && rs
->supports_vCont
.r
5449 /* We don't currently support range stepping multiple
5450 threads with a wildcard (though the protocol allows it,
5451 so stubs shouldn't make an active effort to forbid
5453 && !(remote_multi_process_p (rs
) && ptid_is_pid (ptid
)))
5455 struct thread_info
*tp
;
5457 if (ptid_equal (ptid
, minus_one_ptid
))
5459 /* If we don't know about the target thread's tid, then
5460 we're resuming magic_null_ptid (see caller). */
5461 tp
= find_thread_ptid (magic_null_ptid
);
5464 tp
= find_thread_ptid (ptid
);
5465 gdb_assert (tp
!= NULL
);
5467 if (tp
->control
.may_range_step
)
5469 int addr_size
= gdbarch_addr_bit (target_gdbarch ()) / 8;
5471 p
+= xsnprintf (p
, endp
- p
, ";r%s,%s",
5472 phex_nz (tp
->control
.step_range_start
,
5474 phex_nz (tp
->control
.step_range_end
,
5478 p
+= xsnprintf (p
, endp
- p
, ";s");
5481 p
+= xsnprintf (p
, endp
- p
, ";s");
5482 else if (siggnal
!= GDB_SIGNAL_0
)
5483 p
+= xsnprintf (p
, endp
- p
, ";C%02x", siggnal
);
5485 p
+= xsnprintf (p
, endp
- p
, ";c");
5487 if (remote_multi_process_p (rs
) && ptid_is_pid (ptid
))
5491 /* All (-1) threads of process. */
5492 nptid
= ptid_build (ptid_get_pid (ptid
), -1, 0);
5494 p
+= xsnprintf (p
, endp
- p
, ":");
5495 p
= write_ptid (p
, endp
, nptid
);
5497 else if (!ptid_equal (ptid
, minus_one_ptid
))
5499 p
+= xsnprintf (p
, endp
- p
, ":");
5500 p
= write_ptid (p
, endp
, ptid
);
5506 /* Clear the thread's private info on resume. */
5509 resume_clear_thread_private_info (struct thread_info
*thread
)
5511 if (thread
->priv
!= NULL
)
5513 thread
->priv
->stop_reason
= TARGET_STOPPED_BY_NO_REASON
;
5514 thread
->priv
->watch_data_address
= 0;
5518 /* Append a vCont continue-with-signal action for threads that have a
5519 non-zero stop signal. */
5522 append_pending_thread_resumptions (char *p
, char *endp
, ptid_t ptid
)
5524 struct thread_info
*thread
;
5526 ALL_NON_EXITED_THREADS (thread
)
5527 if (ptid_match (thread
->ptid
, ptid
)
5528 && !ptid_equal (inferior_ptid
, thread
->ptid
)
5529 && thread
->suspend
.stop_signal
!= GDB_SIGNAL_0
)
5531 p
= append_resumption (p
, endp
, thread
->ptid
,
5532 0, thread
->suspend
.stop_signal
);
5533 thread
->suspend
.stop_signal
= GDB_SIGNAL_0
;
5534 resume_clear_thread_private_info (thread
);
5540 /* Resume the remote inferior by using a "vCont" packet. The thread
5541 to be resumed is PTID; STEP and SIGGNAL indicate whether the
5542 resumed thread should be single-stepped and/or signalled. If PTID
5543 equals minus_one_ptid, then all threads are resumed; the thread to
5544 be stepped and/or signalled is given in the global INFERIOR_PTID.
5545 This function returns non-zero iff it resumes the inferior.
5547 This function issues a strict subset of all possible vCont commands at the
5551 remote_vcont_resume (ptid_t ptid
, int step
, enum gdb_signal siggnal
)
5553 struct remote_state
*rs
= get_remote_state ();
5557 if (packet_support (PACKET_vCont
) == PACKET_SUPPORT_UNKNOWN
)
5558 remote_vcont_probe (rs
);
5560 if (packet_support (PACKET_vCont
) == PACKET_DISABLE
)
5564 endp
= rs
->buf
+ get_remote_packet_size ();
5566 /* If we could generate a wider range of packets, we'd have to worry
5567 about overflowing BUF. Should there be a generic
5568 "multi-part-packet" packet? */
5570 p
+= xsnprintf (p
, endp
- p
, "vCont");
5572 if (ptid_equal (ptid
, magic_null_ptid
))
5574 /* MAGIC_NULL_PTID means that we don't have any active threads,
5575 so we don't have any TID numbers the inferior will
5576 understand. Make sure to only send forms that do not specify
5578 append_resumption (p
, endp
, minus_one_ptid
, step
, siggnal
);
5580 else if (ptid_equal (ptid
, minus_one_ptid
) || ptid_is_pid (ptid
))
5582 /* Resume all threads (of all processes, or of a single
5583 process), with preference for INFERIOR_PTID. This assumes
5584 inferior_ptid belongs to the set of all threads we are about
5586 if (step
|| siggnal
!= GDB_SIGNAL_0
)
5588 /* Step inferior_ptid, with or without signal. */
5589 p
= append_resumption (p
, endp
, inferior_ptid
, step
, siggnal
);
5592 /* Also pass down any pending signaled resumption for other
5593 threads not the current. */
5594 p
= append_pending_thread_resumptions (p
, endp
, ptid
);
5596 /* And continue others without a signal. */
5597 append_resumption (p
, endp
, ptid
, /*step=*/ 0, GDB_SIGNAL_0
);
5601 /* Scheduler locking; resume only PTID. */
5602 append_resumption (p
, endp
, ptid
, step
, siggnal
);
5605 gdb_assert (strlen (rs
->buf
) < get_remote_packet_size ());
5608 if (target_is_non_stop_p ())
5610 /* In non-stop, the stub replies to vCont with "OK". The stop
5611 reply will be reported asynchronously by means of a `%Stop'
5613 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5614 if (strcmp (rs
->buf
, "OK") != 0)
5615 error (_("Unexpected vCont reply in non-stop mode: %s"), rs
->buf
);
5621 /* Tell the remote machine to resume. */
5624 remote_resume (struct target_ops
*ops
,
5625 ptid_t ptid
, int step
, enum gdb_signal siggnal
)
5627 struct remote_state
*rs
= get_remote_state ();
5629 struct thread_info
*thread
;
5631 /* In all-stop, we can't mark REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN
5632 (explained in remote-notif.c:handle_notification) so
5633 remote_notif_process is not called. We need find a place where
5634 it is safe to start a 'vNotif' sequence. It is good to do it
5635 before resuming inferior, because inferior was stopped and no RSP
5636 traffic at that moment. */
5637 if (!target_is_non_stop_p ())
5638 remote_notif_process (rs
->notif_state
, ¬if_client_stop
);
5640 rs
->last_sent_signal
= siggnal
;
5641 rs
->last_sent_step
= step
;
5643 rs
->last_resume_exec_dir
= execution_direction
;
5645 /* The vCont packet doesn't need to specify threads via Hc. */
5646 /* No reverse support (yet) for vCont. */
5647 if (execution_direction
!= EXEC_REVERSE
)
5648 if (remote_vcont_resume (ptid
, step
, siggnal
))
5651 /* All other supported resume packets do use Hc, so set the continue
5653 if (ptid_equal (ptid
, minus_one_ptid
))
5654 set_continue_thread (any_thread_ptid
);
5656 set_continue_thread (ptid
);
5658 ALL_NON_EXITED_THREADS (thread
)
5659 resume_clear_thread_private_info (thread
);
5662 if (execution_direction
== EXEC_REVERSE
)
5664 /* We don't pass signals to the target in reverse exec mode. */
5665 if (info_verbose
&& siggnal
!= GDB_SIGNAL_0
)
5666 warning (_(" - Can't pass signal %d to target in reverse: ignored."),
5669 if (step
&& packet_support (PACKET_bs
) == PACKET_DISABLE
)
5670 error (_("Remote reverse-step not supported."));
5671 if (!step
&& packet_support (PACKET_bc
) == PACKET_DISABLE
)
5672 error (_("Remote reverse-continue not supported."));
5674 strcpy (buf
, step
? "bs" : "bc");
5676 else if (siggnal
!= GDB_SIGNAL_0
)
5678 buf
[0] = step
? 'S' : 'C';
5679 buf
[1] = tohex (((int) siggnal
>> 4) & 0xf);
5680 buf
[2] = tohex (((int) siggnal
) & 0xf);
5684 strcpy (buf
, step
? "s" : "c");
5689 /* We are about to start executing the inferior, let's register it
5690 with the event loop. NOTE: this is the one place where all the
5691 execution commands end up. We could alternatively do this in each
5692 of the execution commands in infcmd.c. */
5693 /* FIXME: ezannoni 1999-09-28: We may need to move this out of here
5694 into infcmd.c in order to allow inferior function calls to work
5695 NOT asynchronously. */
5696 if (target_can_async_p ())
5699 /* We've just told the target to resume. The remote server will
5700 wait for the inferior to stop, and then send a stop reply. In
5701 the mean time, we can't start another command/query ourselves
5702 because the stub wouldn't be ready to process it. This applies
5703 only to the base all-stop protocol, however. In non-stop (which
5704 only supports vCont), the stub replies with an "OK", and is
5705 immediate able to process further serial input. */
5706 if (!target_is_non_stop_p ())
5707 rs
->waiting_for_stop_reply
= 1;
5711 /* Non-stop version of target_stop. Uses `vCont;t' to stop a remote
5712 thread, all threads of a remote process, or all threads of all
5716 remote_stop_ns (ptid_t ptid
)
5718 struct remote_state
*rs
= get_remote_state ();
5720 char *endp
= rs
->buf
+ get_remote_packet_size ();
5722 if (packet_support (PACKET_vCont
) == PACKET_SUPPORT_UNKNOWN
)
5723 remote_vcont_probe (rs
);
5725 if (!rs
->supports_vCont
.t
)
5726 error (_("Remote server does not support stopping threads"));
5728 if (ptid_equal (ptid
, minus_one_ptid
)
5729 || (!remote_multi_process_p (rs
) && ptid_is_pid (ptid
)))
5730 p
+= xsnprintf (p
, endp
- p
, "vCont;t");
5735 p
+= xsnprintf (p
, endp
- p
, "vCont;t:");
5737 if (ptid_is_pid (ptid
))
5738 /* All (-1) threads of process. */
5739 nptid
= ptid_build (ptid_get_pid (ptid
), -1, 0);
5742 /* Small optimization: if we already have a stop reply for
5743 this thread, no use in telling the stub we want this
5745 if (peek_stop_reply (ptid
))
5751 write_ptid (p
, endp
, nptid
);
5754 /* In non-stop, we get an immediate OK reply. The stop reply will
5755 come in asynchronously by notification. */
5757 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5758 if (strcmp (rs
->buf
, "OK") != 0)
5759 error (_("Stopping %s failed: %s"), target_pid_to_str (ptid
), rs
->buf
);
5762 /* All-stop version of target_interrupt. Sends a break or a ^C to
5763 interrupt the remote target. It is undefined which thread of which
5764 process reports the interrupt. */
5767 remote_interrupt_as (void)
5769 struct remote_state
*rs
= get_remote_state ();
5771 rs
->ctrlc_pending_p
= 1;
5773 /* If the inferior is stopped already, but the core didn't know
5774 about it yet, just ignore the request. The cached wait status
5775 will be collected in remote_wait. */
5776 if (rs
->cached_wait_status
)
5779 /* Send interrupt_sequence to remote target. */
5780 send_interrupt_sequence ();
5783 /* Non-stop version of target_interrupt. Uses `vCtrlC' to interrupt
5784 the remote target. It is undefined which thread of which process
5785 reports the interrupt. Throws an error if the packet is not
5786 supported by the server. */
5789 remote_interrupt_ns (void)
5791 struct remote_state
*rs
= get_remote_state ();
5793 char *endp
= rs
->buf
+ get_remote_packet_size ();
5795 xsnprintf (p
, endp
- p
, "vCtrlC");
5797 /* In non-stop, we get an immediate OK reply. The stop reply will
5798 come in asynchronously by notification. */
5800 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5802 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_vCtrlC
]))
5806 case PACKET_UNKNOWN
:
5807 error (_("No support for interrupting the remote target."));
5809 error (_("Interrupting target failed: %s"), rs
->buf
);
5813 /* Implement the to_stop function for the remote targets. */
5816 remote_stop (struct target_ops
*self
, ptid_t ptid
)
5819 fprintf_unfiltered (gdb_stdlog
, "remote_stop called\n");
5821 if (target_is_non_stop_p ())
5822 remote_stop_ns (ptid
);
5825 /* We don't currently have a way to transparently pause the
5826 remote target in all-stop mode. Interrupt it instead. */
5827 remote_interrupt_as ();
5831 /* Implement the to_interrupt function for the remote targets. */
5834 remote_interrupt (struct target_ops
*self
, ptid_t ptid
)
5836 struct remote_state
*rs
= get_remote_state ();
5839 fprintf_unfiltered (gdb_stdlog
, "remote_interrupt called\n");
5841 if (target_is_non_stop_p ())
5842 remote_interrupt_ns ();
5844 remote_interrupt_as ();
5847 /* Implement the to_pass_ctrlc function for the remote targets. */
5850 remote_pass_ctrlc (struct target_ops
*self
)
5852 struct remote_state
*rs
= get_remote_state ();
5855 fprintf_unfiltered (gdb_stdlog
, "remote_pass_ctrlc called\n");
5857 /* If we're starting up, we're not fully synced yet. Quit
5859 if (rs
->starting_up
)
5861 /* If ^C has already been sent once, offer to disconnect. */
5862 else if (rs
->ctrlc_pending_p
)
5865 target_interrupt (inferior_ptid
);
5868 /* Ask the user what to do when an interrupt is received. */
5871 interrupt_query (void)
5873 struct remote_state
*rs
= get_remote_state ();
5875 if (rs
->waiting_for_stop_reply
&& rs
->ctrlc_pending_p
)
5877 if (query (_("The target is not responding to interrupt requests.\n"
5878 "Stop debugging it? ")))
5880 remote_unpush_target ();
5881 throw_error (TARGET_CLOSE_ERROR
, _("Disconnected from target."));
5886 if (query (_("Interrupted while waiting for the program.\n"
5887 "Give up waiting? ")))
5892 /* Enable/disable target terminal ownership. Most targets can use
5893 terminal groups to control terminal ownership. Remote targets are
5894 different in that explicit transfer of ownership to/from GDB/target
5898 remote_terminal_inferior (struct target_ops
*self
)
5900 /* FIXME: cagney/1999-09-27: Make calls to target_terminal_*()
5901 idempotent. The event-loop GDB talking to an asynchronous target
5902 with a synchronous command calls this function from both
5903 event-top.c and infrun.c/infcmd.c. Once GDB stops trying to
5904 transfer the terminal to the target when it shouldn't this guard
5906 if (!remote_async_terminal_ours_p
)
5908 delete_file_handler (input_fd
);
5909 remote_async_terminal_ours_p
= 0;
5910 /* NOTE: At this point we could also register our selves as the
5911 recipient of all input. Any characters typed could then be
5912 passed on down to the target. */
5916 remote_terminal_ours (struct target_ops
*self
)
5918 /* See FIXME in remote_terminal_inferior. */
5919 if (remote_async_terminal_ours_p
)
5921 add_file_handler (input_fd
, stdin_event_handler
, 0);
5922 remote_async_terminal_ours_p
= 1;
5926 remote_console_output (char *msg
)
5930 for (p
= msg
; p
[0] && p
[1]; p
+= 2)
5933 char c
= fromhex (p
[0]) * 16 + fromhex (p
[1]);
5937 fputs_unfiltered (tb
, gdb_stdtarg
);
5939 gdb_flush (gdb_stdtarg
);
5942 typedef struct cached_reg
5945 gdb_byte data
[MAX_REGISTER_SIZE
];
5948 DEF_VEC_O(cached_reg_t
);
5950 typedef struct stop_reply
5952 struct notif_event base
;
5954 /* The identifier of the thread about this event */
5957 /* The remote state this event is associated with. When the remote
5958 connection, represented by a remote_state object, is closed,
5959 all the associated stop_reply events should be released. */
5960 struct remote_state
*rs
;
5962 struct target_waitstatus ws
;
5964 /* Expedited registers. This makes remote debugging a bit more
5965 efficient for those targets that provide critical registers as
5966 part of their normal status mechanism (as another roundtrip to
5967 fetch them is avoided). */
5968 VEC(cached_reg_t
) *regcache
;
5970 enum target_stop_reason stop_reason
;
5972 CORE_ADDR watch_data_address
;
5977 DECLARE_QUEUE_P (stop_reply_p
);
5978 DEFINE_QUEUE_P (stop_reply_p
);
5979 /* The list of already fetched and acknowledged stop events. This
5980 queue is used for notification Stop, and other notifications
5981 don't need queue for their events, because the notification events
5982 of Stop can't be consumed immediately, so that events should be
5983 queued first, and be consumed by remote_wait_{ns,as} one per
5984 time. Other notifications can consume their events immediately,
5985 so queue is not needed for them. */
5986 static QUEUE (stop_reply_p
) *stop_reply_queue
;
5989 stop_reply_xfree (struct stop_reply
*r
)
5991 notif_event_xfree ((struct notif_event
*) r
);
5994 /* Return the length of the stop reply queue. */
5997 stop_reply_queue_length (void)
5999 return QUEUE_length (stop_reply_p
, stop_reply_queue
);
6003 remote_notif_stop_parse (struct notif_client
*self
, char *buf
,
6004 struct notif_event
*event
)
6006 remote_parse_stop_reply (buf
, (struct stop_reply
*) event
);
6010 remote_notif_stop_ack (struct notif_client
*self
, char *buf
,
6011 struct notif_event
*event
)
6013 struct stop_reply
*stop_reply
= (struct stop_reply
*) event
;
6016 putpkt ((char *) self
->ack_command
);
6018 if (stop_reply
->ws
.kind
== TARGET_WAITKIND_IGNORE
)
6019 /* We got an unknown stop reply. */
6020 error (_("Unknown stop reply"));
6022 push_stop_reply (stop_reply
);
6026 remote_notif_stop_can_get_pending_events (struct notif_client
*self
)
6028 /* We can't get pending events in remote_notif_process for
6029 notification stop, and we have to do this in remote_wait_ns
6030 instead. If we fetch all queued events from stub, remote stub
6031 may exit and we have no chance to process them back in
6033 mark_async_event_handler (remote_async_inferior_event_token
);
6038 stop_reply_dtr (struct notif_event
*event
)
6040 struct stop_reply
*r
= (struct stop_reply
*) event
;
6042 VEC_free (cached_reg_t
, r
->regcache
);
6045 static struct notif_event
*
6046 remote_notif_stop_alloc_reply (void)
6048 /* We cast to a pointer to the "base class". */
6049 struct notif_event
*r
= (struct notif_event
*) XNEW (struct stop_reply
);
6051 r
->dtr
= stop_reply_dtr
;
6056 /* A client of notification Stop. */
6058 struct notif_client notif_client_stop
=
6062 remote_notif_stop_parse
,
6063 remote_notif_stop_ack
,
6064 remote_notif_stop_can_get_pending_events
,
6065 remote_notif_stop_alloc_reply
,
6069 /* A parameter to pass data in and out. */
6071 struct queue_iter_param
6074 struct stop_reply
*output
;
6077 /* Determine if THREAD is a pending fork parent thread. ARG contains
6078 the pid of the process that owns the threads we want to check, or
6079 -1 if we want to check all threads. */
6082 is_pending_fork_parent (struct target_waitstatus
*ws
, int event_pid
,
6085 if (ws
->kind
== TARGET_WAITKIND_FORKED
6086 || ws
->kind
== TARGET_WAITKIND_VFORKED
)
6088 if (event_pid
== -1 || event_pid
== ptid_get_pid (thread_ptid
))
6095 /* Check whether EVENT is a fork event, and if it is, remove the
6096 fork child from the context list passed in DATA. */
6099 remove_child_of_pending_fork (QUEUE (stop_reply_p
) *q
,
6100 QUEUE_ITER (stop_reply_p
) *iter
,
6104 struct queue_iter_param
*param
= (struct queue_iter_param
*) data
;
6105 struct threads_listing_context
*context
6106 = (struct threads_listing_context
*) param
->input
;
6108 if (event
->ws
.kind
== TARGET_WAITKIND_FORKED
6109 || event
->ws
.kind
== TARGET_WAITKIND_VFORKED
6110 || event
->ws
.kind
== TARGET_WAITKIND_THREAD_EXITED
)
6111 threads_listing_context_remove (&event
->ws
, context
);
6116 /* If CONTEXT contains any fork child threads that have not been
6117 reported yet, remove them from the CONTEXT list. If such a
6118 thread exists it is because we are stopped at a fork catchpoint
6119 and have not yet called follow_fork, which will set up the
6120 host-side data structures for the new process. */
6123 remove_new_fork_children (struct threads_listing_context
*context
)
6125 struct thread_info
* thread
;
6127 struct notif_client
*notif
= ¬if_client_stop
;
6128 struct queue_iter_param param
;
6130 /* For any threads stopped at a fork event, remove the corresponding
6131 fork child threads from the CONTEXT list. */
6132 ALL_NON_EXITED_THREADS (thread
)
6134 struct target_waitstatus
*ws
;
6136 if (thread
->suspend
.waitstatus_pending_p
)
6137 ws
= &thread
->suspend
.waitstatus
;
6139 ws
= &thread
->pending_follow
;
6141 if (is_pending_fork_parent (ws
, pid
, thread
->ptid
))
6143 threads_listing_context_remove (ws
, context
);
6147 /* Check for any pending fork events (not reported or processed yet)
6148 in process PID and remove those fork child threads from the
6149 CONTEXT list as well. */
6150 remote_notif_get_pending_events (notif
);
6151 param
.input
= context
;
6152 param
.output
= NULL
;
6153 QUEUE_iterate (stop_reply_p
, stop_reply_queue
,
6154 remove_child_of_pending_fork
, ¶m
);
6157 /* Remove stop replies in the queue if its pid is equal to the given
6161 remove_stop_reply_for_inferior (QUEUE (stop_reply_p
) *q
,
6162 QUEUE_ITER (stop_reply_p
) *iter
,
6166 struct queue_iter_param
*param
= (struct queue_iter_param
*) data
;
6167 struct inferior
*inf
= (struct inferior
*) param
->input
;
6169 if (ptid_get_pid (event
->ptid
) == inf
->pid
)
6171 stop_reply_xfree (event
);
6172 QUEUE_remove_elem (stop_reply_p
, q
, iter
);
6178 /* Discard all pending stop replies of inferior INF. */
6181 discard_pending_stop_replies (struct inferior
*inf
)
6183 struct queue_iter_param param
;
6184 struct stop_reply
*reply
;
6185 struct remote_state
*rs
= get_remote_state ();
6186 struct remote_notif_state
*rns
= rs
->notif_state
;
6188 /* This function can be notified when an inferior exists. When the
6189 target is not remote, the notification state is NULL. */
6190 if (rs
->remote_desc
== NULL
)
6193 reply
= (struct stop_reply
*) rns
->pending_event
[notif_client_stop
.id
];
6195 /* Discard the in-flight notification. */
6196 if (reply
!= NULL
&& ptid_get_pid (reply
->ptid
) == inf
->pid
)
6198 stop_reply_xfree (reply
);
6199 rns
->pending_event
[notif_client_stop
.id
] = NULL
;
6203 param
.output
= NULL
;
6204 /* Discard the stop replies we have already pulled with
6206 QUEUE_iterate (stop_reply_p
, stop_reply_queue
,
6207 remove_stop_reply_for_inferior
, ¶m
);
6210 /* If its remote state is equal to the given remote state,
6211 remove EVENT from the stop reply queue. */
6214 remove_stop_reply_of_remote_state (QUEUE (stop_reply_p
) *q
,
6215 QUEUE_ITER (stop_reply_p
) *iter
,
6219 struct queue_iter_param
*param
= (struct queue_iter_param
*) data
;
6220 struct remote_state
*rs
= (struct remote_state
*) param
->input
;
6222 if (event
->rs
== rs
)
6224 stop_reply_xfree (event
);
6225 QUEUE_remove_elem (stop_reply_p
, q
, iter
);
6231 /* Discard the stop replies for RS in stop_reply_queue. */
6234 discard_pending_stop_replies_in_queue (struct remote_state
*rs
)
6236 struct queue_iter_param param
;
6239 param
.output
= NULL
;
6240 /* Discard the stop replies we have already pulled with
6242 QUEUE_iterate (stop_reply_p
, stop_reply_queue
,
6243 remove_stop_reply_of_remote_state
, ¶m
);
6246 /* A parameter to pass data in and out. */
6249 remote_notif_remove_once_on_match (QUEUE (stop_reply_p
) *q
,
6250 QUEUE_ITER (stop_reply_p
) *iter
,
6254 struct queue_iter_param
*param
= (struct queue_iter_param
*) data
;
6255 ptid_t
*ptid
= (ptid_t
*) param
->input
;
6257 if (ptid_match (event
->ptid
, *ptid
))
6259 param
->output
= event
;
6260 QUEUE_remove_elem (stop_reply_p
, q
, iter
);
6267 /* Remove the first reply in 'stop_reply_queue' which matches
6270 static struct stop_reply
*
6271 remote_notif_remove_queued_reply (ptid_t ptid
)
6273 struct queue_iter_param param
;
6275 param
.input
= &ptid
;
6276 param
.output
= NULL
;
6278 QUEUE_iterate (stop_reply_p
, stop_reply_queue
,
6279 remote_notif_remove_once_on_match
, ¶m
);
6281 fprintf_unfiltered (gdb_stdlog
,
6282 "notif: discard queued event: 'Stop' in %s\n",
6283 target_pid_to_str (ptid
));
6285 return param
.output
;
6288 /* Look for a queued stop reply belonging to PTID. If one is found,
6289 remove it from the queue, and return it. Returns NULL if none is
6290 found. If there are still queued events left to process, tell the
6291 event loop to get back to target_wait soon. */
6293 static struct stop_reply
*
6294 queued_stop_reply (ptid_t ptid
)
6296 struct stop_reply
*r
= remote_notif_remove_queued_reply (ptid
);
6298 if (!QUEUE_is_empty (stop_reply_p
, stop_reply_queue
))
6299 /* There's still at least an event left. */
6300 mark_async_event_handler (remote_async_inferior_event_token
);
6305 /* Push a fully parsed stop reply in the stop reply queue. Since we
6306 know that we now have at least one queued event left to pass to the
6307 core side, tell the event loop to get back to target_wait soon. */
6310 push_stop_reply (struct stop_reply
*new_event
)
6312 QUEUE_enque (stop_reply_p
, stop_reply_queue
, new_event
);
6315 fprintf_unfiltered (gdb_stdlog
,
6316 "notif: push 'Stop' %s to queue %d\n",
6317 target_pid_to_str (new_event
->ptid
),
6318 QUEUE_length (stop_reply_p
,
6321 mark_async_event_handler (remote_async_inferior_event_token
);
6325 stop_reply_match_ptid_and_ws (QUEUE (stop_reply_p
) *q
,
6326 QUEUE_ITER (stop_reply_p
) *iter
,
6327 struct stop_reply
*event
,
6330 ptid_t
*ptid
= (ptid_t
*) data
;
6332 return !(ptid_equal (*ptid
, event
->ptid
)
6333 && event
->ws
.kind
== TARGET_WAITKIND_STOPPED
);
6336 /* Returns true if we have a stop reply for PTID. */
6339 peek_stop_reply (ptid_t ptid
)
6341 return !QUEUE_iterate (stop_reply_p
, stop_reply_queue
,
6342 stop_reply_match_ptid_and_ws
, &ptid
);
6345 /* Helper for remote_parse_stop_reply. Return nonzero if the substring
6346 starting with P and ending with PEND matches PREFIX. */
6349 strprefix (const char *p
, const char *pend
, const char *prefix
)
6351 for ( ; p
< pend
; p
++, prefix
++)
6354 return *prefix
== '\0';
6357 /* Parse the stop reply in BUF. Either the function succeeds, and the
6358 result is stored in EVENT, or throws an error. */
6361 remote_parse_stop_reply (char *buf
, struct stop_reply
*event
)
6363 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6368 event
->ptid
= null_ptid
;
6369 event
->rs
= get_remote_state ();
6370 event
->ws
.kind
= TARGET_WAITKIND_IGNORE
;
6371 event
->ws
.value
.integer
= 0;
6372 event
->stop_reason
= TARGET_STOPPED_BY_NO_REASON
;
6373 event
->regcache
= NULL
;
6378 case 'T': /* Status with PC, SP, FP, ... */
6379 /* Expedited reply, containing Signal, {regno, reg} repeat. */
6380 /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where
6382 n... = register number
6383 r... = register contents
6386 p
= &buf
[3]; /* after Txx */
6392 p1
= strchr (p
, ':');
6394 error (_("Malformed packet(a) (missing colon): %s\n\
6398 error (_("Malformed packet(a) (missing register number): %s\n\
6402 /* Some "registers" are actually extended stop information.
6403 Note if you're adding a new entry here: GDB 7.9 and
6404 earlier assume that all register "numbers" that start
6405 with an hex digit are real register numbers. Make sure
6406 the server only sends such a packet if it knows the
6407 client understands it. */
6409 if (strprefix (p
, p1
, "thread"))
6410 event
->ptid
= read_ptid (++p1
, &p
);
6411 else if (strprefix (p
, p1
, "syscall_entry"))
6415 event
->ws
.kind
= TARGET_WAITKIND_SYSCALL_ENTRY
;
6416 p
= unpack_varlen_hex (++p1
, &sysno
);
6417 event
->ws
.value
.syscall_number
= (int) sysno
;
6419 else if (strprefix (p
, p1
, "syscall_return"))
6423 event
->ws
.kind
= TARGET_WAITKIND_SYSCALL_RETURN
;
6424 p
= unpack_varlen_hex (++p1
, &sysno
);
6425 event
->ws
.value
.syscall_number
= (int) sysno
;
6427 else if (strprefix (p
, p1
, "watch")
6428 || strprefix (p
, p1
, "rwatch")
6429 || strprefix (p
, p1
, "awatch"))
6431 event
->stop_reason
= TARGET_STOPPED_BY_WATCHPOINT
;
6432 p
= unpack_varlen_hex (++p1
, &addr
);
6433 event
->watch_data_address
= (CORE_ADDR
) addr
;
6435 else if (strprefix (p
, p1
, "swbreak"))
6437 event
->stop_reason
= TARGET_STOPPED_BY_SW_BREAKPOINT
;
6439 /* Make sure the stub doesn't forget to indicate support
6441 if (packet_support (PACKET_swbreak_feature
) != PACKET_ENABLE
)
6442 error (_("Unexpected swbreak stop reason"));
6444 /* The value part is documented as "must be empty",
6445 though we ignore it, in case we ever decide to make
6446 use of it in a backward compatible way. */
6447 p
= strchrnul (p1
+ 1, ';');
6449 else if (strprefix (p
, p1
, "hwbreak"))
6451 event
->stop_reason
= TARGET_STOPPED_BY_HW_BREAKPOINT
;
6453 /* Make sure the stub doesn't forget to indicate support
6455 if (packet_support (PACKET_hwbreak_feature
) != PACKET_ENABLE
)
6456 error (_("Unexpected hwbreak stop reason"));
6459 p
= strchrnul (p1
+ 1, ';');
6461 else if (strprefix (p
, p1
, "library"))
6463 event
->ws
.kind
= TARGET_WAITKIND_LOADED
;
6464 p
= strchrnul (p1
+ 1, ';');
6466 else if (strprefix (p
, p1
, "replaylog"))
6468 event
->ws
.kind
= TARGET_WAITKIND_NO_HISTORY
;
6469 /* p1 will indicate "begin" or "end", but it makes
6470 no difference for now, so ignore it. */
6471 p
= strchrnul (p1
+ 1, ';');
6473 else if (strprefix (p
, p1
, "core"))
6477 p
= unpack_varlen_hex (++p1
, &c
);
6480 else if (strprefix (p
, p1
, "fork"))
6482 event
->ws
.value
.related_pid
= read_ptid (++p1
, &p
);
6483 event
->ws
.kind
= TARGET_WAITKIND_FORKED
;
6485 else if (strprefix (p
, p1
, "vfork"))
6487 event
->ws
.value
.related_pid
= read_ptid (++p1
, &p
);
6488 event
->ws
.kind
= TARGET_WAITKIND_VFORKED
;
6490 else if (strprefix (p
, p1
, "vforkdone"))
6492 event
->ws
.kind
= TARGET_WAITKIND_VFORK_DONE
;
6493 p
= strchrnul (p1
+ 1, ';');
6495 else if (strprefix (p
, p1
, "exec"))
6498 char pathname
[PATH_MAX
];
6501 /* Determine the length of the execd pathname. */
6502 p
= unpack_varlen_hex (++p1
, &ignored
);
6503 pathlen
= (p
- p1
) / 2;
6505 /* Save the pathname for event reporting and for
6506 the next run command. */
6507 hex2bin (p1
, (gdb_byte
*) pathname
, pathlen
);
6508 pathname
[pathlen
] = '\0';
6510 /* This is freed during event handling. */
6511 event
->ws
.value
.execd_pathname
= xstrdup (pathname
);
6512 event
->ws
.kind
= TARGET_WAITKIND_EXECD
;
6514 /* Skip the registers included in this packet, since
6515 they may be for an architecture different from the
6516 one used by the original program. */
6519 else if (strprefix (p
, p1
, "create"))
6521 event
->ws
.kind
= TARGET_WAITKIND_THREAD_CREATED
;
6522 p
= strchrnul (p1
+ 1, ';');
6531 p
= strchrnul (p1
+ 1, ';');
6536 /* Maybe a real ``P'' register number. */
6537 p_temp
= unpack_varlen_hex (p
, &pnum
);
6538 /* If the first invalid character is the colon, we got a
6539 register number. Otherwise, it's an unknown stop
6543 struct packet_reg
*reg
= packet_reg_from_pnum (rsa
, pnum
);
6544 cached_reg_t cached_reg
;
6547 error (_("Remote sent bad register number %s: %s\n\
6549 hex_string (pnum
), p
, buf
);
6551 cached_reg
.num
= reg
->regnum
;
6554 fieldsize
= hex2bin (p
, cached_reg
.data
,
6555 register_size (target_gdbarch (),
6558 if (fieldsize
< register_size (target_gdbarch (),
6560 warning (_("Remote reply is too short: %s"), buf
);
6562 VEC_safe_push (cached_reg_t
, event
->regcache
, &cached_reg
);
6566 /* Not a number. Silently skip unknown optional
6568 p
= strchrnul (p1
+ 1, ';');
6573 error (_("Remote register badly formatted: %s\nhere: %s"),
6578 if (event
->ws
.kind
!= TARGET_WAITKIND_IGNORE
)
6582 case 'S': /* Old style status, just signal only. */
6586 event
->ws
.kind
= TARGET_WAITKIND_STOPPED
;
6587 sig
= (fromhex (buf
[1]) << 4) + fromhex (buf
[2]);
6588 if (GDB_SIGNAL_FIRST
<= sig
&& sig
< GDB_SIGNAL_LAST
)
6589 event
->ws
.value
.sig
= (enum gdb_signal
) sig
;
6591 event
->ws
.value
.sig
= GDB_SIGNAL_UNKNOWN
;
6594 case 'w': /* Thread exited. */
6599 event
->ws
.kind
= TARGET_WAITKIND_THREAD_EXITED
;
6600 p
= unpack_varlen_hex (&buf
[1], &value
);
6601 event
->ws
.value
.integer
= value
;
6603 error (_("stop reply packet badly formatted: %s"), buf
);
6604 event
->ptid
= read_ptid (++p
, NULL
);
6607 case 'W': /* Target exited. */
6614 /* GDB used to accept only 2 hex chars here. Stubs should
6615 only send more if they detect GDB supports multi-process
6617 p
= unpack_varlen_hex (&buf
[1], &value
);
6621 /* The remote process exited. */
6622 event
->ws
.kind
= TARGET_WAITKIND_EXITED
;
6623 event
->ws
.value
.integer
= value
;
6627 /* The remote process exited with a signal. */
6628 event
->ws
.kind
= TARGET_WAITKIND_SIGNALLED
;
6629 if (GDB_SIGNAL_FIRST
<= value
&& value
< GDB_SIGNAL_LAST
)
6630 event
->ws
.value
.sig
= (enum gdb_signal
) value
;
6632 event
->ws
.value
.sig
= GDB_SIGNAL_UNKNOWN
;
6635 /* If no process is specified, assume inferior_ptid. */
6636 pid
= ptid_get_pid (inferior_ptid
);
6645 else if (startswith (p
, "process:"))
6649 p
+= sizeof ("process:") - 1;
6650 unpack_varlen_hex (p
, &upid
);
6654 error (_("unknown stop reply packet: %s"), buf
);
6657 error (_("unknown stop reply packet: %s"), buf
);
6658 event
->ptid
= pid_to_ptid (pid
);
6662 event
->ws
.kind
= TARGET_WAITKIND_NO_RESUMED
;
6663 event
->ptid
= minus_one_ptid
;
6667 if (target_is_non_stop_p () && ptid_equal (event
->ptid
, null_ptid
))
6668 error (_("No process or thread specified in stop reply: %s"), buf
);
6671 /* When the stub wants to tell GDB about a new notification reply, it
6672 sends a notification (%Stop, for example). Those can come it at
6673 any time, hence, we have to make sure that any pending
6674 putpkt/getpkt sequence we're making is finished, before querying
6675 the stub for more events with the corresponding ack command
6676 (vStopped, for example). E.g., if we started a vStopped sequence
6677 immediately upon receiving the notification, something like this
6685 1.6) <-- (registers reply to step #1.3)
6687 Obviously, the reply in step #1.6 would be unexpected to a vStopped
6690 To solve this, whenever we parse a %Stop notification successfully,
6691 we mark the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN, and carry on
6692 doing whatever we were doing:
6698 <GDB marks the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN>
6699 2.5) <-- (registers reply to step #2.3)
6701 Eventualy after step #2.5, we return to the event loop, which
6702 notices there's an event on the
6703 REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN event and calls the
6704 associated callback --- the function below. At this point, we're
6705 always safe to start a vStopped sequence. :
6708 2.7) <-- T05 thread:2
6714 remote_notif_get_pending_events (struct notif_client
*nc
)
6716 struct remote_state
*rs
= get_remote_state ();
6718 if (rs
->notif_state
->pending_event
[nc
->id
] != NULL
)
6721 fprintf_unfiltered (gdb_stdlog
,
6722 "notif: process: '%s' ack pending event\n",
6726 nc
->ack (nc
, rs
->buf
, rs
->notif_state
->pending_event
[nc
->id
]);
6727 rs
->notif_state
->pending_event
[nc
->id
] = NULL
;
6731 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6732 if (strcmp (rs
->buf
, "OK") == 0)
6735 remote_notif_ack (nc
, rs
->buf
);
6741 fprintf_unfiltered (gdb_stdlog
,
6742 "notif: process: '%s' no pending reply\n",
6747 /* Called when it is decided that STOP_REPLY holds the info of the
6748 event that is to be returned to the core. This function always
6749 destroys STOP_REPLY. */
6752 process_stop_reply (struct stop_reply
*stop_reply
,
6753 struct target_waitstatus
*status
)
6757 *status
= stop_reply
->ws
;
6758 ptid
= stop_reply
->ptid
;
6760 /* If no thread/process was reported by the stub, assume the current
6762 if (ptid_equal (ptid
, null_ptid
))
6763 ptid
= inferior_ptid
;
6765 if (status
->kind
!= TARGET_WAITKIND_EXITED
6766 && status
->kind
!= TARGET_WAITKIND_SIGNALLED
6767 && status
->kind
!= TARGET_WAITKIND_NO_RESUMED
)
6769 struct private_thread_info
*remote_thr
;
6771 /* Expedited registers. */
6772 if (stop_reply
->regcache
)
6774 struct regcache
*regcache
6775 = get_thread_arch_regcache (ptid
, target_gdbarch ());
6780 VEC_iterate(cached_reg_t
, stop_reply
->regcache
, ix
, reg
);
6782 regcache_raw_supply (regcache
, reg
->num
, reg
->data
);
6783 VEC_free (cached_reg_t
, stop_reply
->regcache
);
6786 remote_notice_new_inferior (ptid
, 0);
6787 remote_thr
= demand_private_info (ptid
);
6788 remote_thr
->core
= stop_reply
->core
;
6789 remote_thr
->stop_reason
= stop_reply
->stop_reason
;
6790 remote_thr
->watch_data_address
= stop_reply
->watch_data_address
;
6793 stop_reply_xfree (stop_reply
);
6797 /* The non-stop mode version of target_wait. */
6800 remote_wait_ns (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
6802 struct remote_state
*rs
= get_remote_state ();
6803 struct stop_reply
*stop_reply
;
6807 /* If in non-stop mode, get out of getpkt even if a
6808 notification is received. */
6810 ret
= getpkt_or_notif_sane (&rs
->buf
, &rs
->buf_size
,
6811 0 /* forever */, &is_notif
);
6814 if (ret
!= -1 && !is_notif
)
6817 case 'E': /* Error of some sort. */
6818 /* We're out of sync with the target now. Did it continue
6819 or not? We can't tell which thread it was in non-stop,
6820 so just ignore this. */
6821 warning (_("Remote failure reply: %s"), rs
->buf
);
6823 case 'O': /* Console output. */
6824 remote_console_output (rs
->buf
+ 1);
6827 warning (_("Invalid remote reply: %s"), rs
->buf
);
6831 /* Acknowledge a pending stop reply that may have arrived in the
6833 if (rs
->notif_state
->pending_event
[notif_client_stop
.id
] != NULL
)
6834 remote_notif_get_pending_events (¬if_client_stop
);
6836 /* If indeed we noticed a stop reply, we're done. */
6837 stop_reply
= queued_stop_reply (ptid
);
6838 if (stop_reply
!= NULL
)
6839 return process_stop_reply (stop_reply
, status
);
6841 /* Still no event. If we're just polling for an event, then
6842 return to the event loop. */
6843 if (options
& TARGET_WNOHANG
)
6845 status
->kind
= TARGET_WAITKIND_IGNORE
;
6846 return minus_one_ptid
;
6849 /* Otherwise do a blocking wait. */
6850 ret
= getpkt_or_notif_sane (&rs
->buf
, &rs
->buf_size
,
6851 1 /* forever */, &is_notif
);
6855 /* Wait until the remote machine stops, then return, storing status in
6856 STATUS just as `wait' would. */
6859 remote_wait_as (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
6861 struct remote_state
*rs
= get_remote_state ();
6862 ptid_t event_ptid
= null_ptid
;
6864 struct stop_reply
*stop_reply
;
6868 status
->kind
= TARGET_WAITKIND_IGNORE
;
6869 status
->value
.integer
= 0;
6871 stop_reply
= queued_stop_reply (ptid
);
6872 if (stop_reply
!= NULL
)
6873 return process_stop_reply (stop_reply
, status
);
6875 if (rs
->cached_wait_status
)
6876 /* Use the cached wait status, but only once. */
6877 rs
->cached_wait_status
= 0;
6882 int forever
= ((options
& TARGET_WNOHANG
) == 0
6883 && wait_forever_enabled_p
);
6885 if (!rs
->waiting_for_stop_reply
)
6887 status
->kind
= TARGET_WAITKIND_NO_RESUMED
;
6888 return minus_one_ptid
;
6891 /* FIXME: cagney/1999-09-27: If we're in async mode we should
6892 _never_ wait for ever -> test on target_is_async_p().
6893 However, before we do that we need to ensure that the caller
6894 knows how to take the target into/out of async mode. */
6895 ret
= getpkt_or_notif_sane (&rs
->buf
, &rs
->buf_size
,
6896 forever
, &is_notif
);
6898 /* GDB gets a notification. Return to core as this event is
6900 if (ret
!= -1 && is_notif
)
6901 return minus_one_ptid
;
6903 if (ret
== -1 && (options
& TARGET_WNOHANG
) != 0)
6904 return minus_one_ptid
;
6909 /* Assume that the target has acknowledged Ctrl-C unless we receive
6910 an 'F' or 'O' packet. */
6911 if (buf
[0] != 'F' && buf
[0] != 'O')
6912 rs
->ctrlc_pending_p
= 0;
6916 case 'E': /* Error of some sort. */
6917 /* We're out of sync with the target now. Did it continue or
6918 not? Not is more likely, so report a stop. */
6919 rs
->waiting_for_stop_reply
= 0;
6921 warning (_("Remote failure reply: %s"), buf
);
6922 status
->kind
= TARGET_WAITKIND_STOPPED
;
6923 status
->value
.sig
= GDB_SIGNAL_0
;
6925 case 'F': /* File-I/O request. */
6926 /* GDB may access the inferior memory while handling the File-I/O
6927 request, but we don't want GDB accessing memory while waiting
6928 for a stop reply. See the comments in putpkt_binary. Set
6929 waiting_for_stop_reply to 0 temporarily. */
6930 rs
->waiting_for_stop_reply
= 0;
6931 remote_fileio_request (buf
, rs
->ctrlc_pending_p
);
6932 rs
->ctrlc_pending_p
= 0;
6933 /* GDB handled the File-I/O request, and the target is running
6934 again. Keep waiting for events. */
6935 rs
->waiting_for_stop_reply
= 1;
6937 case 'N': case 'T': case 'S': case 'X': case 'W':
6939 struct stop_reply
*stop_reply
;
6941 /* There is a stop reply to handle. */
6942 rs
->waiting_for_stop_reply
= 0;
6945 = (struct stop_reply
*) remote_notif_parse (¬if_client_stop
,
6948 event_ptid
= process_stop_reply (stop_reply
, status
);
6951 case 'O': /* Console output. */
6952 remote_console_output (buf
+ 1);
6955 if (rs
->last_sent_signal
!= GDB_SIGNAL_0
)
6957 /* Zero length reply means that we tried 'S' or 'C' and the
6958 remote system doesn't support it. */
6959 target_terminal_ours_for_output ();
6961 ("Can't send signals to this remote system. %s not sent.\n",
6962 gdb_signal_to_name (rs
->last_sent_signal
));
6963 rs
->last_sent_signal
= GDB_SIGNAL_0
;
6964 target_terminal_inferior ();
6966 strcpy ((char *) buf
, rs
->last_sent_step
? "s" : "c");
6967 putpkt ((char *) buf
);
6970 /* else fallthrough */
6972 warning (_("Invalid remote reply: %s"), buf
);
6976 if (status
->kind
== TARGET_WAITKIND_NO_RESUMED
)
6977 return minus_one_ptid
;
6978 else if (status
->kind
== TARGET_WAITKIND_IGNORE
)
6980 /* Nothing interesting happened. If we're doing a non-blocking
6981 poll, we're done. Otherwise, go back to waiting. */
6982 if (options
& TARGET_WNOHANG
)
6983 return minus_one_ptid
;
6987 else if (status
->kind
!= TARGET_WAITKIND_EXITED
6988 && status
->kind
!= TARGET_WAITKIND_SIGNALLED
)
6990 if (!ptid_equal (event_ptid
, null_ptid
))
6991 record_currthread (rs
, event_ptid
);
6993 event_ptid
= inferior_ptid
;
6996 /* A process exit. Invalidate our notion of current thread. */
6997 record_currthread (rs
, minus_one_ptid
);
7002 /* Wait until the remote machine stops, then return, storing status in
7003 STATUS just as `wait' would. */
7006 remote_wait (struct target_ops
*ops
,
7007 ptid_t ptid
, struct target_waitstatus
*status
, int options
)
7011 if (target_is_non_stop_p ())
7012 event_ptid
= remote_wait_ns (ptid
, status
, options
);
7014 event_ptid
= remote_wait_as (ptid
, status
, options
);
7016 if (target_is_async_p ())
7018 /* If there are are events left in the queue tell the event loop
7020 if (!QUEUE_is_empty (stop_reply_p
, stop_reply_queue
))
7021 mark_async_event_handler (remote_async_inferior_event_token
);
7027 /* Fetch a single register using a 'p' packet. */
7030 fetch_register_using_p (struct regcache
*regcache
, struct packet_reg
*reg
)
7032 struct remote_state
*rs
= get_remote_state ();
7034 char regp
[MAX_REGISTER_SIZE
];
7037 if (packet_support (PACKET_p
) == PACKET_DISABLE
)
7040 if (reg
->pnum
== -1)
7045 p
+= hexnumstr (p
, reg
->pnum
);
7048 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7052 switch (packet_ok (buf
, &remote_protocol_packets
[PACKET_p
]))
7056 case PACKET_UNKNOWN
:
7059 error (_("Could not fetch register \"%s\"; remote failure reply '%s'"),
7060 gdbarch_register_name (get_regcache_arch (regcache
),
7065 /* If this register is unfetchable, tell the regcache. */
7068 regcache_raw_supply (regcache
, reg
->regnum
, NULL
);
7072 /* Otherwise, parse and supply the value. */
7078 error (_("fetch_register_using_p: early buf termination"));
7080 regp
[i
++] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
7083 regcache_raw_supply (regcache
, reg
->regnum
, regp
);
7087 /* Fetch the registers included in the target's 'g' packet. */
7090 send_g_packet (void)
7092 struct remote_state
*rs
= get_remote_state ();
7095 xsnprintf (rs
->buf
, get_remote_packet_size (), "g");
7096 remote_send (&rs
->buf
, &rs
->buf_size
);
7098 /* We can get out of synch in various cases. If the first character
7099 in the buffer is not a hex character, assume that has happened
7100 and try to fetch another packet to read. */
7101 while ((rs
->buf
[0] < '0' || rs
->buf
[0] > '9')
7102 && (rs
->buf
[0] < 'A' || rs
->buf
[0] > 'F')
7103 && (rs
->buf
[0] < 'a' || rs
->buf
[0] > 'f')
7104 && rs
->buf
[0] != 'x') /* New: unavailable register value. */
7107 fprintf_unfiltered (gdb_stdlog
,
7108 "Bad register packet; fetching a new packet\n");
7109 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7112 buf_len
= strlen (rs
->buf
);
7114 /* Sanity check the received packet. */
7115 if (buf_len
% 2 != 0)
7116 error (_("Remote 'g' packet reply is of odd length: %s"), rs
->buf
);
7122 process_g_packet (struct regcache
*regcache
)
7124 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
7125 struct remote_state
*rs
= get_remote_state ();
7126 struct remote_arch_state
*rsa
= get_remote_arch_state ();
7131 buf_len
= strlen (rs
->buf
);
7133 /* Further sanity checks, with knowledge of the architecture. */
7134 if (buf_len
> 2 * rsa
->sizeof_g_packet
)
7135 error (_("Remote 'g' packet reply is too long: %s"), rs
->buf
);
7137 /* Save the size of the packet sent to us by the target. It is used
7138 as a heuristic when determining the max size of packets that the
7139 target can safely receive. */
7140 if (rsa
->actual_register_packet_size
== 0)
7141 rsa
->actual_register_packet_size
= buf_len
;
7143 /* If this is smaller than we guessed the 'g' packet would be,
7144 update our records. A 'g' reply that doesn't include a register's
7145 value implies either that the register is not available, or that
7146 the 'p' packet must be used. */
7147 if (buf_len
< 2 * rsa
->sizeof_g_packet
)
7149 rsa
->sizeof_g_packet
= buf_len
/ 2;
7151 for (i
= 0; i
< gdbarch_num_regs (gdbarch
); i
++)
7153 if (rsa
->regs
[i
].pnum
== -1)
7156 if (rsa
->regs
[i
].offset
>= rsa
->sizeof_g_packet
)
7157 rsa
->regs
[i
].in_g_packet
= 0;
7159 rsa
->regs
[i
].in_g_packet
= 1;
7163 regs
= (char *) alloca (rsa
->sizeof_g_packet
);
7165 /* Unimplemented registers read as all bits zero. */
7166 memset (regs
, 0, rsa
->sizeof_g_packet
);
7168 /* Reply describes registers byte by byte, each byte encoded as two
7169 hex characters. Suck them all up, then supply them to the
7170 register cacheing/storage mechanism. */
7173 for (i
= 0; i
< rsa
->sizeof_g_packet
; i
++)
7175 if (p
[0] == 0 || p
[1] == 0)
7176 /* This shouldn't happen - we adjusted sizeof_g_packet above. */
7177 internal_error (__FILE__
, __LINE__
,
7178 _("unexpected end of 'g' packet reply"));
7180 if (p
[0] == 'x' && p
[1] == 'x')
7181 regs
[i
] = 0; /* 'x' */
7183 regs
[i
] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
7187 for (i
= 0; i
< gdbarch_num_regs (gdbarch
); i
++)
7189 struct packet_reg
*r
= &rsa
->regs
[i
];
7193 if (r
->offset
* 2 >= strlen (rs
->buf
))
7194 /* This shouldn't happen - we adjusted in_g_packet above. */
7195 internal_error (__FILE__
, __LINE__
,
7196 _("unexpected end of 'g' packet reply"));
7197 else if (rs
->buf
[r
->offset
* 2] == 'x')
7199 gdb_assert (r
->offset
* 2 < strlen (rs
->buf
));
7200 /* The register isn't available, mark it as such (at
7201 the same time setting the value to zero). */
7202 regcache_raw_supply (regcache
, r
->regnum
, NULL
);
7205 regcache_raw_supply (regcache
, r
->regnum
,
7212 fetch_registers_using_g (struct regcache
*regcache
)
7215 process_g_packet (regcache
);
7218 /* Make the remote selected traceframe match GDB's selected
7222 set_remote_traceframe (void)
7225 struct remote_state
*rs
= get_remote_state ();
7227 if (rs
->remote_traceframe_number
== get_traceframe_number ())
7230 /* Avoid recursion, remote_trace_find calls us again. */
7231 rs
->remote_traceframe_number
= get_traceframe_number ();
7233 newnum
= target_trace_find (tfind_number
,
7234 get_traceframe_number (), 0, 0, NULL
);
7236 /* Should not happen. If it does, all bets are off. */
7237 if (newnum
!= get_traceframe_number ())
7238 warning (_("could not set remote traceframe"));
7242 remote_fetch_registers (struct target_ops
*ops
,
7243 struct regcache
*regcache
, int regnum
)
7245 struct remote_arch_state
*rsa
= get_remote_arch_state ();
7248 set_remote_traceframe ();
7249 set_general_thread (inferior_ptid
);
7253 struct packet_reg
*reg
= packet_reg_from_regnum (rsa
, regnum
);
7255 gdb_assert (reg
!= NULL
);
7257 /* If this register might be in the 'g' packet, try that first -
7258 we are likely to read more than one register. If this is the
7259 first 'g' packet, we might be overly optimistic about its
7260 contents, so fall back to 'p'. */
7261 if (reg
->in_g_packet
)
7263 fetch_registers_using_g (regcache
);
7264 if (reg
->in_g_packet
)
7268 if (fetch_register_using_p (regcache
, reg
))
7271 /* This register is not available. */
7272 regcache_raw_supply (regcache
, reg
->regnum
, NULL
);
7277 fetch_registers_using_g (regcache
);
7279 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
7280 if (!rsa
->regs
[i
].in_g_packet
)
7281 if (!fetch_register_using_p (regcache
, &rsa
->regs
[i
]))
7283 /* This register is not available. */
7284 regcache_raw_supply (regcache
, i
, NULL
);
7288 /* Prepare to store registers. Since we may send them all (using a
7289 'G' request), we have to read out the ones we don't want to change
7293 remote_prepare_to_store (struct target_ops
*self
, struct regcache
*regcache
)
7295 struct remote_arch_state
*rsa
= get_remote_arch_state ();
7297 gdb_byte buf
[MAX_REGISTER_SIZE
];
7299 /* Make sure the entire registers array is valid. */
7300 switch (packet_support (PACKET_P
))
7302 case PACKET_DISABLE
:
7303 case PACKET_SUPPORT_UNKNOWN
:
7304 /* Make sure all the necessary registers are cached. */
7305 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
7306 if (rsa
->regs
[i
].in_g_packet
)
7307 regcache_raw_read (regcache
, rsa
->regs
[i
].regnum
, buf
);
7314 /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF
7315 packet was not recognized. */
7318 store_register_using_P (const struct regcache
*regcache
,
7319 struct packet_reg
*reg
)
7321 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
7322 struct remote_state
*rs
= get_remote_state ();
7323 /* Try storing a single register. */
7324 char *buf
= rs
->buf
;
7325 gdb_byte regp
[MAX_REGISTER_SIZE
];
7328 if (packet_support (PACKET_P
) == PACKET_DISABLE
)
7331 if (reg
->pnum
== -1)
7334 xsnprintf (buf
, get_remote_packet_size (), "P%s=", phex_nz (reg
->pnum
, 0));
7335 p
= buf
+ strlen (buf
);
7336 regcache_raw_collect (regcache
, reg
->regnum
, regp
);
7337 bin2hex (regp
, p
, register_size (gdbarch
, reg
->regnum
));
7339 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7341 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_P
]))
7346 error (_("Could not write register \"%s\"; remote failure reply '%s'"),
7347 gdbarch_register_name (gdbarch
, reg
->regnum
), rs
->buf
);
7348 case PACKET_UNKNOWN
:
7351 internal_error (__FILE__
, __LINE__
, _("Bad result from packet_ok"));
7355 /* Store register REGNUM, or all registers if REGNUM == -1, from the
7356 contents of the register cache buffer. FIXME: ignores errors. */
7359 store_registers_using_G (const struct regcache
*regcache
)
7361 struct remote_state
*rs
= get_remote_state ();
7362 struct remote_arch_state
*rsa
= get_remote_arch_state ();
7366 /* Extract all the registers in the regcache copying them into a
7371 regs
= (gdb_byte
*) alloca (rsa
->sizeof_g_packet
);
7372 memset (regs
, 0, rsa
->sizeof_g_packet
);
7373 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
7375 struct packet_reg
*r
= &rsa
->regs
[i
];
7378 regcache_raw_collect (regcache
, r
->regnum
, regs
+ r
->offset
);
7382 /* Command describes registers byte by byte,
7383 each byte encoded as two hex characters. */
7386 /* remote_prepare_to_store insures that rsa->sizeof_g_packet gets
7388 bin2hex (regs
, p
, rsa
->sizeof_g_packet
);
7390 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7391 if (packet_check_result (rs
->buf
) == PACKET_ERROR
)
7392 error (_("Could not write registers; remote failure reply '%s'"),
7396 /* Store register REGNUM, or all registers if REGNUM == -1, from the contents
7397 of the register cache buffer. FIXME: ignores errors. */
7400 remote_store_registers (struct target_ops
*ops
,
7401 struct regcache
*regcache
, int regnum
)
7403 struct remote_arch_state
*rsa
= get_remote_arch_state ();
7406 set_remote_traceframe ();
7407 set_general_thread (inferior_ptid
);
7411 struct packet_reg
*reg
= packet_reg_from_regnum (rsa
, regnum
);
7413 gdb_assert (reg
!= NULL
);
7415 /* Always prefer to store registers using the 'P' packet if
7416 possible; we often change only a small number of registers.
7417 Sometimes we change a larger number; we'd need help from a
7418 higher layer to know to use 'G'. */
7419 if (store_register_using_P (regcache
, reg
))
7422 /* For now, don't complain if we have no way to write the
7423 register. GDB loses track of unavailable registers too
7424 easily. Some day, this may be an error. We don't have
7425 any way to read the register, either... */
7426 if (!reg
->in_g_packet
)
7429 store_registers_using_G (regcache
);
7433 store_registers_using_G (regcache
);
7435 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
7436 if (!rsa
->regs
[i
].in_g_packet
)
7437 if (!store_register_using_P (regcache
, &rsa
->regs
[i
]))
7438 /* See above for why we do not issue an error here. */
7443 /* Return the number of hex digits in num. */
7446 hexnumlen (ULONGEST num
)
7450 for (i
= 0; num
!= 0; i
++)
7456 /* Set BUF to the minimum number of hex digits representing NUM. */
7459 hexnumstr (char *buf
, ULONGEST num
)
7461 int len
= hexnumlen (num
);
7463 return hexnumnstr (buf
, num
, len
);
7467 /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */
7470 hexnumnstr (char *buf
, ULONGEST num
, int width
)
7476 for (i
= width
- 1; i
>= 0; i
--)
7478 buf
[i
] = "0123456789abcdef"[(num
& 0xf)];
7485 /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */
7488 remote_address_masked (CORE_ADDR addr
)
7490 unsigned int address_size
= remote_address_size
;
7492 /* If "remoteaddresssize" was not set, default to target address size. */
7494 address_size
= gdbarch_addr_bit (target_gdbarch ());
7496 if (address_size
> 0
7497 && address_size
< (sizeof (ULONGEST
) * 8))
7499 /* Only create a mask when that mask can safely be constructed
7500 in a ULONGEST variable. */
7503 mask
= (mask
<< address_size
) - 1;
7509 /* Determine whether the remote target supports binary downloading.
7510 This is accomplished by sending a no-op memory write of zero length
7511 to the target at the specified address. It does not suffice to send
7512 the whole packet, since many stubs strip the eighth bit and
7513 subsequently compute a wrong checksum, which causes real havoc with
7516 NOTE: This can still lose if the serial line is not eight-bit
7517 clean. In cases like this, the user should clear "remote
7521 check_binary_download (CORE_ADDR addr
)
7523 struct remote_state
*rs
= get_remote_state ();
7525 switch (packet_support (PACKET_X
))
7527 case PACKET_DISABLE
:
7531 case PACKET_SUPPORT_UNKNOWN
:
7537 p
+= hexnumstr (p
, (ULONGEST
) addr
);
7539 p
+= hexnumstr (p
, (ULONGEST
) 0);
7543 putpkt_binary (rs
->buf
, (int) (p
- rs
->buf
));
7544 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7546 if (rs
->buf
[0] == '\0')
7549 fprintf_unfiltered (gdb_stdlog
,
7550 "binary downloading NOT "
7551 "supported by target\n");
7552 remote_protocol_packets
[PACKET_X
].support
= PACKET_DISABLE
;
7557 fprintf_unfiltered (gdb_stdlog
,
7558 "binary downloading supported by target\n");
7559 remote_protocol_packets
[PACKET_X
].support
= PACKET_ENABLE
;
7566 /* Helper function to resize the payload in order to try to get a good
7567 alignment. We try to write an amount of data such that the next write will
7568 start on an address aligned on REMOTE_ALIGN_WRITES. */
7571 align_for_efficient_write (int todo
, CORE_ADDR memaddr
)
7573 return ((memaddr
+ todo
) & ~(REMOTE_ALIGN_WRITES
- 1)) - memaddr
;
7576 /* Write memory data directly to the remote machine.
7577 This does not inform the data cache; the data cache uses this.
7578 HEADER is the starting part of the packet.
7579 MEMADDR is the address in the remote memory space.
7580 MYADDR is the address of the buffer in our space.
7581 LEN_UNITS is the number of addressable units to write.
7582 UNIT_SIZE is the length in bytes of an addressable unit.
7583 PACKET_FORMAT should be either 'X' or 'M', and indicates if we
7584 should send data as binary ('X'), or hex-encoded ('M').
7586 The function creates packet of the form
7587 <HEADER><ADDRESS>,<LENGTH>:<DATA>
7589 where encoding of <DATA> is terminated by PACKET_FORMAT.
7591 If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma
7594 Return the transferred status, error or OK (an
7595 'enum target_xfer_status' value). Save the number of addressable units
7596 transferred in *XFERED_LEN_UNITS. Only transfer a single packet.
7598 On a platform with an addressable memory size of 2 bytes (UNIT_SIZE == 2), an
7599 exchange between gdb and the stub could look like (?? in place of the
7605 -> $M1000,3:eeeeffffeeee#??
7609 <- eeeeffffeeeedddd */
7611 static enum target_xfer_status
7612 remote_write_bytes_aux (const char *header
, CORE_ADDR memaddr
,
7613 const gdb_byte
*myaddr
, ULONGEST len_units
,
7614 int unit_size
, ULONGEST
*xfered_len_units
,
7615 char packet_format
, int use_length
)
7617 struct remote_state
*rs
= get_remote_state ();
7623 int payload_capacity_bytes
;
7624 int payload_length_bytes
;
7626 if (packet_format
!= 'X' && packet_format
!= 'M')
7627 internal_error (__FILE__
, __LINE__
,
7628 _("remote_write_bytes_aux: bad packet format"));
7631 return TARGET_XFER_EOF
;
7633 payload_capacity_bytes
= get_memory_write_packet_size ();
7635 /* The packet buffer will be large enough for the payload;
7636 get_memory_packet_size ensures this. */
7639 /* Compute the size of the actual payload by subtracting out the
7640 packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */
7642 payload_capacity_bytes
-= strlen ("$,:#NN");
7644 /* The comma won't be used. */
7645 payload_capacity_bytes
+= 1;
7646 payload_capacity_bytes
-= strlen (header
);
7647 payload_capacity_bytes
-= hexnumlen (memaddr
);
7649 /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */
7651 strcat (rs
->buf
, header
);
7652 p
= rs
->buf
+ strlen (header
);
7654 /* Compute a best guess of the number of bytes actually transfered. */
7655 if (packet_format
== 'X')
7657 /* Best guess at number of bytes that will fit. */
7658 todo_units
= min (len_units
, payload_capacity_bytes
/ unit_size
);
7660 payload_capacity_bytes
-= hexnumlen (todo_units
);
7661 todo_units
= min (todo_units
, payload_capacity_bytes
/ unit_size
);
7665 /* Number of bytes that will fit. */
7666 todo_units
= min (len_units
, (payload_capacity_bytes
/ unit_size
) / 2);
7668 payload_capacity_bytes
-= hexnumlen (todo_units
);
7669 todo_units
= min (todo_units
, (payload_capacity_bytes
/ unit_size
) / 2);
7672 if (todo_units
<= 0)
7673 internal_error (__FILE__
, __LINE__
,
7674 _("minimum packet size too small to write data"));
7676 /* If we already need another packet, then try to align the end
7677 of this packet to a useful boundary. */
7678 if (todo_units
> 2 * REMOTE_ALIGN_WRITES
&& todo_units
< len_units
)
7679 todo_units
= align_for_efficient_write (todo_units
, memaddr
);
7681 /* Append "<memaddr>". */
7682 memaddr
= remote_address_masked (memaddr
);
7683 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
7690 /* Append the length and retain its location and size. It may need to be
7691 adjusted once the packet body has been created. */
7693 plenlen
= hexnumstr (p
, (ULONGEST
) todo_units
);
7701 /* Append the packet body. */
7702 if (packet_format
== 'X')
7704 /* Binary mode. Send target system values byte by byte, in
7705 increasing byte addresses. Only escape certain critical
7707 payload_length_bytes
=
7708 remote_escape_output (myaddr
, todo_units
, unit_size
, (gdb_byte
*) p
,
7709 &units_written
, payload_capacity_bytes
);
7711 /* If not all TODO units fit, then we'll need another packet. Make
7712 a second try to keep the end of the packet aligned. Don't do
7713 this if the packet is tiny. */
7714 if (units_written
< todo_units
&& units_written
> 2 * REMOTE_ALIGN_WRITES
)
7718 new_todo_units
= align_for_efficient_write (units_written
, memaddr
);
7720 if (new_todo_units
!= units_written
)
7721 payload_length_bytes
=
7722 remote_escape_output (myaddr
, new_todo_units
, unit_size
,
7723 (gdb_byte
*) p
, &units_written
,
7724 payload_capacity_bytes
);
7727 p
+= payload_length_bytes
;
7728 if (use_length
&& units_written
< todo_units
)
7730 /* Escape chars have filled up the buffer prematurely,
7731 and we have actually sent fewer units than planned.
7732 Fix-up the length field of the packet. Use the same
7733 number of characters as before. */
7734 plen
+= hexnumnstr (plen
, (ULONGEST
) units_written
,
7736 *plen
= ':'; /* overwrite \0 from hexnumnstr() */
7741 /* Normal mode: Send target system values byte by byte, in
7742 increasing byte addresses. Each byte is encoded as a two hex
7744 p
+= 2 * bin2hex (myaddr
, p
, todo_units
* unit_size
);
7745 units_written
= todo_units
;
7748 putpkt_binary (rs
->buf
, (int) (p
- rs
->buf
));
7749 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7751 if (rs
->buf
[0] == 'E')
7752 return TARGET_XFER_E_IO
;
7754 /* Return UNITS_WRITTEN, not TODO_UNITS, in case escape chars caused us to
7755 send fewer units than we'd planned. */
7756 *xfered_len_units
= (ULONGEST
) units_written
;
7757 return TARGET_XFER_OK
;
7760 /* Write memory data directly to the remote machine.
7761 This does not inform the data cache; the data cache uses this.
7762 MEMADDR is the address in the remote memory space.
7763 MYADDR is the address of the buffer in our space.
7764 LEN is the number of bytes.
7766 Return the transferred status, error or OK (an
7767 'enum target_xfer_status' value). Save the number of bytes
7768 transferred in *XFERED_LEN. Only transfer a single packet. */
7770 static enum target_xfer_status
7771 remote_write_bytes (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ULONGEST len
,
7772 int unit_size
, ULONGEST
*xfered_len
)
7774 char *packet_format
= 0;
7776 /* Check whether the target supports binary download. */
7777 check_binary_download (memaddr
);
7779 switch (packet_support (PACKET_X
))
7782 packet_format
= "X";
7784 case PACKET_DISABLE
:
7785 packet_format
= "M";
7787 case PACKET_SUPPORT_UNKNOWN
:
7788 internal_error (__FILE__
, __LINE__
,
7789 _("remote_write_bytes: bad internal state"));
7791 internal_error (__FILE__
, __LINE__
, _("bad switch"));
7794 return remote_write_bytes_aux (packet_format
,
7795 memaddr
, myaddr
, len
, unit_size
, xfered_len
,
7796 packet_format
[0], 1);
7799 /* Read memory data directly from the remote machine.
7800 This does not use the data cache; the data cache uses this.
7801 MEMADDR is the address in the remote memory space.
7802 MYADDR is the address of the buffer in our space.
7803 LEN_UNITS is the number of addressable memory units to read..
7804 UNIT_SIZE is the length in bytes of an addressable unit.
7806 Return the transferred status, error or OK (an
7807 'enum target_xfer_status' value). Save the number of bytes
7808 transferred in *XFERED_LEN_UNITS.
7810 See the comment of remote_write_bytes_aux for an example of
7811 memory read/write exchange between gdb and the stub. */
7813 static enum target_xfer_status
7814 remote_read_bytes_1 (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ULONGEST len_units
,
7815 int unit_size
, ULONGEST
*xfered_len_units
)
7817 struct remote_state
*rs
= get_remote_state ();
7818 int buf_size_bytes
; /* Max size of packet output buffer. */
7823 buf_size_bytes
= get_memory_read_packet_size ();
7824 /* The packet buffer will be large enough for the payload;
7825 get_memory_packet_size ensures this. */
7827 /* Number of units that will fit. */
7828 todo_units
= min (len_units
, (buf_size_bytes
/ unit_size
) / 2);
7830 /* Construct "m"<memaddr>","<len>". */
7831 memaddr
= remote_address_masked (memaddr
);
7834 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
7836 p
+= hexnumstr (p
, (ULONGEST
) todo_units
);
7839 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7840 if (rs
->buf
[0] == 'E'
7841 && isxdigit (rs
->buf
[1]) && isxdigit (rs
->buf
[2])
7842 && rs
->buf
[3] == '\0')
7843 return TARGET_XFER_E_IO
;
7844 /* Reply describes memory byte by byte, each byte encoded as two hex
7847 decoded_bytes
= hex2bin (p
, myaddr
, todo_units
* unit_size
);
7848 /* Return what we have. Let higher layers handle partial reads. */
7849 *xfered_len_units
= (ULONGEST
) (decoded_bytes
/ unit_size
);
7850 return TARGET_XFER_OK
;
7853 /* Using the set of read-only target sections of remote, read live
7856 For interface/parameters/return description see target.h,
7859 static enum target_xfer_status
7860 remote_xfer_live_readonly_partial (struct target_ops
*ops
, gdb_byte
*readbuf
,
7861 ULONGEST memaddr
, ULONGEST len
,
7862 int unit_size
, ULONGEST
*xfered_len
)
7864 struct target_section
*secp
;
7865 struct target_section_table
*table
;
7867 secp
= target_section_by_addr (ops
, memaddr
);
7869 && (bfd_get_section_flags (secp
->the_bfd_section
->owner
,
7870 secp
->the_bfd_section
)
7873 struct target_section
*p
;
7874 ULONGEST memend
= memaddr
+ len
;
7876 table
= target_get_section_table (ops
);
7878 for (p
= table
->sections
; p
< table
->sections_end
; p
++)
7880 if (memaddr
>= p
->addr
)
7882 if (memend
<= p
->endaddr
)
7884 /* Entire transfer is within this section. */
7885 return remote_read_bytes_1 (memaddr
, readbuf
, len
, unit_size
,
7888 else if (memaddr
>= p
->endaddr
)
7890 /* This section ends before the transfer starts. */
7895 /* This section overlaps the transfer. Just do half. */
7896 len
= p
->endaddr
- memaddr
;
7897 return remote_read_bytes_1 (memaddr
, readbuf
, len
, unit_size
,
7904 return TARGET_XFER_EOF
;
7907 /* Similar to remote_read_bytes_1, but it reads from the remote stub
7908 first if the requested memory is unavailable in traceframe.
7909 Otherwise, fall back to remote_read_bytes_1. */
7911 static enum target_xfer_status
7912 remote_read_bytes (struct target_ops
*ops
, CORE_ADDR memaddr
,
7913 gdb_byte
*myaddr
, ULONGEST len
, int unit_size
,
7914 ULONGEST
*xfered_len
)
7917 return TARGET_XFER_EOF
;
7919 if (get_traceframe_number () != -1)
7921 VEC(mem_range_s
) *available
;
7923 /* If we fail to get the set of available memory, then the
7924 target does not support querying traceframe info, and so we
7925 attempt reading from the traceframe anyway (assuming the
7926 target implements the old QTro packet then). */
7927 if (traceframe_available_memory (&available
, memaddr
, len
))
7929 struct cleanup
*old_chain
;
7931 old_chain
= make_cleanup (VEC_cleanup(mem_range_s
), &available
);
7933 if (VEC_empty (mem_range_s
, available
)
7934 || VEC_index (mem_range_s
, available
, 0)->start
!= memaddr
)
7936 enum target_xfer_status res
;
7938 /* Don't read into the traceframe's available
7940 if (!VEC_empty (mem_range_s
, available
))
7942 LONGEST oldlen
= len
;
7944 len
= VEC_index (mem_range_s
, available
, 0)->start
- memaddr
;
7945 gdb_assert (len
<= oldlen
);
7948 do_cleanups (old_chain
);
7950 /* This goes through the topmost target again. */
7951 res
= remote_xfer_live_readonly_partial (ops
, myaddr
, memaddr
,
7952 len
, unit_size
, xfered_len
);
7953 if (res
== TARGET_XFER_OK
)
7954 return TARGET_XFER_OK
;
7957 /* No use trying further, we know some memory starting
7958 at MEMADDR isn't available. */
7960 return TARGET_XFER_UNAVAILABLE
;
7964 /* Don't try to read more than how much is available, in
7965 case the target implements the deprecated QTro packet to
7966 cater for older GDBs (the target's knowledge of read-only
7967 sections may be outdated by now). */
7968 len
= VEC_index (mem_range_s
, available
, 0)->length
;
7970 do_cleanups (old_chain
);
7974 return remote_read_bytes_1 (memaddr
, myaddr
, len
, unit_size
, xfered_len
);
7979 /* Sends a packet with content determined by the printf format string
7980 FORMAT and the remaining arguments, then gets the reply. Returns
7981 whether the packet was a success, a failure, or unknown. */
7983 static enum packet_result
remote_send_printf (const char *format
, ...)
7984 ATTRIBUTE_PRINTF (1, 2);
7986 static enum packet_result
7987 remote_send_printf (const char *format
, ...)
7989 struct remote_state
*rs
= get_remote_state ();
7990 int max_size
= get_remote_packet_size ();
7993 va_start (ap
, format
);
7996 if (vsnprintf (rs
->buf
, max_size
, format
, ap
) >= max_size
)
7997 internal_error (__FILE__
, __LINE__
, _("Too long remote packet."));
7999 if (putpkt (rs
->buf
) < 0)
8000 error (_("Communication problem with target."));
8003 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8005 return packet_check_result (rs
->buf
);
8009 restore_remote_timeout (void *p
)
8011 int value
= *(int *)p
;
8013 remote_timeout
= value
;
8016 /* Flash writing can take quite some time. We'll set
8017 effectively infinite timeout for flash operations.
8018 In future, we'll need to decide on a better approach. */
8019 static const int remote_flash_timeout
= 1000;
8022 remote_flash_erase (struct target_ops
*ops
,
8023 ULONGEST address
, LONGEST length
)
8025 int addr_size
= gdbarch_addr_bit (target_gdbarch ()) / 8;
8026 int saved_remote_timeout
= remote_timeout
;
8027 enum packet_result ret
;
8028 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
8029 &saved_remote_timeout
);
8031 remote_timeout
= remote_flash_timeout
;
8033 ret
= remote_send_printf ("vFlashErase:%s,%s",
8034 phex (address
, addr_size
),
8038 case PACKET_UNKNOWN
:
8039 error (_("Remote target does not support flash erase"));
8041 error (_("Error erasing flash with vFlashErase packet"));
8046 do_cleanups (back_to
);
8049 static enum target_xfer_status
8050 remote_flash_write (struct target_ops
*ops
, ULONGEST address
,
8051 ULONGEST length
, ULONGEST
*xfered_len
,
8052 const gdb_byte
*data
)
8054 int saved_remote_timeout
= remote_timeout
;
8055 enum target_xfer_status ret
;
8056 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
8057 &saved_remote_timeout
);
8059 remote_timeout
= remote_flash_timeout
;
8060 ret
= remote_write_bytes_aux ("vFlashWrite:", address
, data
, length
, 1,
8062 do_cleanups (back_to
);
8068 remote_flash_done (struct target_ops
*ops
)
8070 int saved_remote_timeout
= remote_timeout
;
8072 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
8073 &saved_remote_timeout
);
8075 remote_timeout
= remote_flash_timeout
;
8076 ret
= remote_send_printf ("vFlashDone");
8077 do_cleanups (back_to
);
8081 case PACKET_UNKNOWN
:
8082 error (_("Remote target does not support vFlashDone"));
8084 error (_("Error finishing flash operation"));
8091 remote_files_info (struct target_ops
*ignore
)
8093 puts_filtered ("Debugging a target over a serial line.\n");
8096 /* Stuff for dealing with the packets which are part of this protocol.
8097 See comment at top of file for details. */
8099 /* Close/unpush the remote target, and throw a TARGET_CLOSE_ERROR
8100 error to higher layers. Called when a serial error is detected.
8101 The exception message is STRING, followed by a colon and a blank,
8102 the system error message for errno at function entry and final dot
8103 for output compatibility with throw_perror_with_name. */
8106 unpush_and_perror (const char *string
)
8108 int saved_errno
= errno
;
8110 remote_unpush_target ();
8111 throw_error (TARGET_CLOSE_ERROR
, "%s: %s.", string
,
8112 safe_strerror (saved_errno
));
8115 /* Read a single character from the remote end. The current quit
8116 handler is overridden to avoid quitting in the middle of packet
8117 sequence, as that would break communication with the remote server.
8118 See remote_serial_quit_handler for more detail. */
8121 readchar (int timeout
)
8124 struct remote_state
*rs
= get_remote_state ();
8125 struct cleanup
*old_chain
;
8127 old_chain
= make_cleanup_override_quit_handler (remote_serial_quit_handler
);
8129 rs
->got_ctrlc_during_io
= 0;
8131 ch
= serial_readchar (rs
->remote_desc
, timeout
);
8133 if (rs
->got_ctrlc_during_io
)
8136 do_cleanups (old_chain
);
8141 switch ((enum serial_rc
) ch
)
8144 remote_unpush_target ();
8145 throw_error (TARGET_CLOSE_ERROR
, _("Remote connection closed"));
8148 unpush_and_perror (_("Remote communication error. "
8149 "Target disconnected."));
8151 case SERIAL_TIMEOUT
:
8157 /* Wrapper for serial_write that closes the target and throws if
8158 writing fails. The current quit handler is overridden to avoid
8159 quitting in the middle of packet sequence, as that would break
8160 communication with the remote server. See
8161 remote_serial_quit_handler for more detail. */
8164 remote_serial_write (const char *str
, int len
)
8166 struct remote_state
*rs
= get_remote_state ();
8167 struct cleanup
*old_chain
;
8169 old_chain
= make_cleanup_override_quit_handler (remote_serial_quit_handler
);
8171 rs
->got_ctrlc_during_io
= 0;
8173 if (serial_write (rs
->remote_desc
, str
, len
))
8175 unpush_and_perror (_("Remote communication error. "
8176 "Target disconnected."));
8179 if (rs
->got_ctrlc_during_io
)
8182 do_cleanups (old_chain
);
8185 /* Send the command in *BUF to the remote machine, and read the reply
8186 into *BUF. Report an error if we get an error reply. Resize
8187 *BUF using xrealloc if necessary to hold the result, and update
8191 remote_send (char **buf
,
8195 getpkt (buf
, sizeof_buf
, 0);
8197 if ((*buf
)[0] == 'E')
8198 error (_("Remote failure reply: %s"), *buf
);
8201 /* Return a pointer to an xmalloc'ed string representing an escaped
8202 version of BUF, of len N. E.g. \n is converted to \\n, \t to \\t,
8203 etc. The caller is responsible for releasing the returned
8207 escape_buffer (const char *buf
, int n
)
8209 struct cleanup
*old_chain
;
8210 struct ui_file
*stb
;
8213 stb
= mem_fileopen ();
8214 old_chain
= make_cleanup_ui_file_delete (stb
);
8216 fputstrn_unfiltered (buf
, n
, '\\', stb
);
8217 str
= ui_file_xstrdup (stb
, NULL
);
8218 do_cleanups (old_chain
);
8222 /* Display a null-terminated packet on stdout, for debugging, using C
8226 print_packet (const char *buf
)
8228 puts_filtered ("\"");
8229 fputstr_filtered (buf
, '"', gdb_stdout
);
8230 puts_filtered ("\"");
8234 putpkt (const char *buf
)
8236 return putpkt_binary (buf
, strlen (buf
));
8239 /* Send a packet to the remote machine, with error checking. The data
8240 of the packet is in BUF. The string in BUF can be at most
8241 get_remote_packet_size () - 5 to account for the $, # and checksum,
8242 and for a possible /0 if we are debugging (remote_debug) and want
8243 to print the sent packet as a string. */
8246 putpkt_binary (const char *buf
, int cnt
)
8248 struct remote_state
*rs
= get_remote_state ();
8250 unsigned char csum
= 0;
8251 char *buf2
= (char *) xmalloc (cnt
+ 6);
8252 struct cleanup
*old_chain
= make_cleanup (xfree
, buf2
);
8258 /* Catch cases like trying to read memory or listing threads while
8259 we're waiting for a stop reply. The remote server wouldn't be
8260 ready to handle this request, so we'd hang and timeout. We don't
8261 have to worry about this in synchronous mode, because in that
8262 case it's not possible to issue a command while the target is
8263 running. This is not a problem in non-stop mode, because in that
8264 case, the stub is always ready to process serial input. */
8265 if (!target_is_non_stop_p ()
8266 && target_is_async_p ()
8267 && rs
->waiting_for_stop_reply
)
8269 error (_("Cannot execute this command while the target is running.\n"
8270 "Use the \"interrupt\" command to stop the target\n"
8271 "and then try again."));
8274 /* We're sending out a new packet. Make sure we don't look at a
8275 stale cached response. */
8276 rs
->cached_wait_status
= 0;
8278 /* Copy the packet into buffer BUF2, encapsulating it
8279 and giving it a checksum. */
8284 for (i
= 0; i
< cnt
; i
++)
8290 *p
++ = tohex ((csum
>> 4) & 0xf);
8291 *p
++ = tohex (csum
& 0xf);
8293 /* Send it over and over until we get a positive ack. */
8297 int started_error_output
= 0;
8301 struct cleanup
*old_chain
;
8305 str
= escape_buffer (buf2
, p
- buf2
);
8306 old_chain
= make_cleanup (xfree
, str
);
8307 fprintf_unfiltered (gdb_stdlog
, "Sending packet: %s...", str
);
8308 gdb_flush (gdb_stdlog
);
8309 do_cleanups (old_chain
);
8311 remote_serial_write (buf2
, p
- buf2
);
8313 /* If this is a no acks version of the remote protocol, send the
8314 packet and move on. */
8318 /* Read until either a timeout occurs (-2) or '+' is read.
8319 Handle any notification that arrives in the mean time. */
8322 ch
= readchar (remote_timeout
);
8330 case SERIAL_TIMEOUT
:
8333 if (started_error_output
)
8335 putchar_unfiltered ('\n');
8336 started_error_output
= 0;
8345 fprintf_unfiltered (gdb_stdlog
, "Ack\n");
8346 do_cleanups (old_chain
);
8350 fprintf_unfiltered (gdb_stdlog
, "Nak\n");
8352 case SERIAL_TIMEOUT
:
8356 do_cleanups (old_chain
);
8359 break; /* Retransmit buffer. */
8363 fprintf_unfiltered (gdb_stdlog
,
8364 "Packet instead of Ack, ignoring it\n");
8365 /* It's probably an old response sent because an ACK
8366 was lost. Gobble up the packet and ack it so it
8367 doesn't get retransmitted when we resend this
8370 remote_serial_write ("+", 1);
8371 continue; /* Now, go look for +. */
8378 /* If we got a notification, handle it, and go back to looking
8380 /* We've found the start of a notification. Now
8381 collect the data. */
8382 val
= read_frame (&rs
->buf
, &rs
->buf_size
);
8387 struct cleanup
*old_chain
;
8390 str
= escape_buffer (rs
->buf
, val
);
8391 old_chain
= make_cleanup (xfree
, str
);
8392 fprintf_unfiltered (gdb_stdlog
,
8393 " Notification received: %s\n",
8395 do_cleanups (old_chain
);
8397 handle_notification (rs
->notif_state
, rs
->buf
);
8398 /* We're in sync now, rewait for the ack. */
8405 if (!started_error_output
)
8407 started_error_output
= 1;
8408 fprintf_unfiltered (gdb_stdlog
, "putpkt: Junk: ");
8410 fputc_unfiltered (ch
& 0177, gdb_stdlog
);
8411 fprintf_unfiltered (gdb_stdlog
, "%s", rs
->buf
);
8420 if (!started_error_output
)
8422 started_error_output
= 1;
8423 fprintf_unfiltered (gdb_stdlog
, "putpkt: Junk: ");
8425 fputc_unfiltered (ch
& 0177, gdb_stdlog
);
8429 break; /* Here to retransmit. */
8433 /* This is wrong. If doing a long backtrace, the user should be
8434 able to get out next time we call QUIT, without anything as
8435 violent as interrupt_query. If we want to provide a way out of
8436 here without getting to the next QUIT, it should be based on
8437 hitting ^C twice as in remote_wait. */
8446 do_cleanups (old_chain
);
8450 /* Come here after finding the start of a frame when we expected an
8451 ack. Do our best to discard the rest of this packet. */
8460 c
= readchar (remote_timeout
);
8463 case SERIAL_TIMEOUT
:
8464 /* Nothing we can do. */
8467 /* Discard the two bytes of checksum and stop. */
8468 c
= readchar (remote_timeout
);
8470 c
= readchar (remote_timeout
);
8473 case '*': /* Run length encoding. */
8474 /* Discard the repeat count. */
8475 c
= readchar (remote_timeout
);
8480 /* A regular character. */
8486 /* Come here after finding the start of the frame. Collect the rest
8487 into *BUF, verifying the checksum, length, and handling run-length
8488 compression. NUL terminate the buffer. If there is not enough room,
8489 expand *BUF using xrealloc.
8491 Returns -1 on error, number of characters in buffer (ignoring the
8492 trailing NULL) on success. (could be extended to return one of the
8493 SERIAL status indications). */
8496 read_frame (char **buf_p
,
8503 struct remote_state
*rs
= get_remote_state ();
8510 c
= readchar (remote_timeout
);
8513 case SERIAL_TIMEOUT
:
8515 fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog
);
8519 fputs_filtered ("Saw new packet start in middle of old one\n",
8521 return -1; /* Start a new packet, count retries. */
8524 unsigned char pktcsum
;
8530 check_0
= readchar (remote_timeout
);
8532 check_1
= readchar (remote_timeout
);
8534 if (check_0
== SERIAL_TIMEOUT
|| check_1
== SERIAL_TIMEOUT
)
8537 fputs_filtered ("Timeout in checksum, retrying\n",
8541 else if (check_0
< 0 || check_1
< 0)
8544 fputs_filtered ("Communication error in checksum\n",
8549 /* Don't recompute the checksum; with no ack packets we
8550 don't have any way to indicate a packet retransmission
8555 pktcsum
= (fromhex (check_0
) << 4) | fromhex (check_1
);
8556 if (csum
== pktcsum
)
8561 struct cleanup
*old_chain
;
8564 str
= escape_buffer (buf
, bc
);
8565 old_chain
= make_cleanup (xfree
, str
);
8566 fprintf_unfiltered (gdb_stdlog
,
8567 "Bad checksum, sentsum=0x%x, "
8568 "csum=0x%x, buf=%s\n",
8569 pktcsum
, csum
, str
);
8570 do_cleanups (old_chain
);
8572 /* Number of characters in buffer ignoring trailing
8576 case '*': /* Run length encoding. */
8581 c
= readchar (remote_timeout
);
8583 repeat
= c
- ' ' + 3; /* Compute repeat count. */
8585 /* The character before ``*'' is repeated. */
8587 if (repeat
> 0 && repeat
<= 255 && bc
> 0)
8589 if (bc
+ repeat
- 1 >= *sizeof_buf
- 1)
8591 /* Make some more room in the buffer. */
8592 *sizeof_buf
+= repeat
;
8593 *buf_p
= (char *) xrealloc (*buf_p
, *sizeof_buf
);
8597 memset (&buf
[bc
], buf
[bc
- 1], repeat
);
8603 printf_filtered (_("Invalid run length encoding: %s\n"), buf
);
8607 if (bc
>= *sizeof_buf
- 1)
8609 /* Make some more room in the buffer. */
8611 *buf_p
= (char *) xrealloc (*buf_p
, *sizeof_buf
);
8622 /* Read a packet from the remote machine, with error checking, and
8623 store it in *BUF. Resize *BUF using xrealloc if necessary to hold
8624 the result, and update *SIZEOF_BUF. If FOREVER, wait forever
8625 rather than timing out; this is used (in synchronous mode) to wait
8626 for a target that is is executing user code to stop. */
8627 /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we
8628 don't have to change all the calls to getpkt to deal with the
8629 return value, because at the moment I don't know what the right
8630 thing to do it for those. */
8636 getpkt_sane (buf
, sizeof_buf
, forever
);
8640 /* Read a packet from the remote machine, with error checking, and
8641 store it in *BUF. Resize *BUF using xrealloc if necessary to hold
8642 the result, and update *SIZEOF_BUF. If FOREVER, wait forever
8643 rather than timing out; this is used (in synchronous mode) to wait
8644 for a target that is is executing user code to stop. If FOREVER ==
8645 0, this function is allowed to time out gracefully and return an
8646 indication of this to the caller. Otherwise return the number of
8647 bytes read. If EXPECTING_NOTIF, consider receiving a notification
8648 enough reason to return to the caller. *IS_NOTIF is an output
8649 boolean that indicates whether *BUF holds a notification or not
8650 (a regular packet). */
8653 getpkt_or_notif_sane_1 (char **buf
, long *sizeof_buf
, int forever
,
8654 int expecting_notif
, int *is_notif
)
8656 struct remote_state
*rs
= get_remote_state ();
8662 /* We're reading a new response. Make sure we don't look at a
8663 previously cached response. */
8664 rs
->cached_wait_status
= 0;
8666 strcpy (*buf
, "timeout");
8669 timeout
= watchdog
> 0 ? watchdog
: -1;
8670 else if (expecting_notif
)
8671 timeout
= 0; /* There should already be a char in the buffer. If
8674 timeout
= remote_timeout
;
8678 /* Process any number of notifications, and then return when
8682 /* If we get a timeout or bad checksum, retry up to MAX_TRIES
8684 for (tries
= 1; tries
<= MAX_TRIES
; tries
++)
8686 /* This can loop forever if the remote side sends us
8687 characters continuously, but if it pauses, we'll get
8688 SERIAL_TIMEOUT from readchar because of timeout. Then
8689 we'll count that as a retry.
8691 Note that even when forever is set, we will only wait
8692 forever prior to the start of a packet. After that, we
8693 expect characters to arrive at a brisk pace. They should
8694 show up within remote_timeout intervals. */
8696 c
= readchar (timeout
);
8697 while (c
!= SERIAL_TIMEOUT
&& c
!= '$' && c
!= '%');
8699 if (c
== SERIAL_TIMEOUT
)
8701 if (expecting_notif
)
8702 return -1; /* Don't complain, it's normal to not get
8703 anything in this case. */
8705 if (forever
) /* Watchdog went off? Kill the target. */
8707 remote_unpush_target ();
8708 throw_error (TARGET_CLOSE_ERROR
,
8709 _("Watchdog timeout has expired. "
8710 "Target detached."));
8713 fputs_filtered ("Timed out.\n", gdb_stdlog
);
8717 /* We've found the start of a packet or notification.
8718 Now collect the data. */
8719 val
= read_frame (buf
, sizeof_buf
);
8724 remote_serial_write ("-", 1);
8727 if (tries
> MAX_TRIES
)
8729 /* We have tried hard enough, and just can't receive the
8730 packet/notification. Give up. */
8731 printf_unfiltered (_("Ignoring packet error, continuing...\n"));
8733 /* Skip the ack char if we're in no-ack mode. */
8734 if (!rs
->noack_mode
)
8735 remote_serial_write ("+", 1);
8739 /* If we got an ordinary packet, return that to our caller. */
8744 struct cleanup
*old_chain
;
8747 str
= escape_buffer (*buf
, val
);
8748 old_chain
= make_cleanup (xfree
, str
);
8749 fprintf_unfiltered (gdb_stdlog
, "Packet received: %s\n", str
);
8750 do_cleanups (old_chain
);
8753 /* Skip the ack char if we're in no-ack mode. */
8754 if (!rs
->noack_mode
)
8755 remote_serial_write ("+", 1);
8756 if (is_notif
!= NULL
)
8761 /* If we got a notification, handle it, and go back to looking
8765 gdb_assert (c
== '%');
8769 struct cleanup
*old_chain
;
8772 str
= escape_buffer (*buf
, val
);
8773 old_chain
= make_cleanup (xfree
, str
);
8774 fprintf_unfiltered (gdb_stdlog
,
8775 " Notification received: %s\n",
8777 do_cleanups (old_chain
);
8779 if (is_notif
!= NULL
)
8782 handle_notification (rs
->notif_state
, *buf
);
8784 /* Notifications require no acknowledgement. */
8786 if (expecting_notif
)
8793 getpkt_sane (char **buf
, long *sizeof_buf
, int forever
)
8795 return getpkt_or_notif_sane_1 (buf
, sizeof_buf
, forever
, 0, NULL
);
8799 getpkt_or_notif_sane (char **buf
, long *sizeof_buf
, int forever
,
8802 return getpkt_or_notif_sane_1 (buf
, sizeof_buf
, forever
, 1,
8806 /* Check whether EVENT is a fork event for the process specified
8807 by the pid passed in DATA, and if it is, kill the fork child. */
8810 kill_child_of_pending_fork (QUEUE (stop_reply_p
) *q
,
8811 QUEUE_ITER (stop_reply_p
) *iter
,
8815 struct queue_iter_param
*param
= (struct queue_iter_param
*) data
;
8816 int parent_pid
= *(int *) param
->input
;
8818 if (is_pending_fork_parent (&event
->ws
, parent_pid
, event
->ptid
))
8820 struct remote_state
*rs
= get_remote_state ();
8821 int child_pid
= ptid_get_pid (event
->ws
.value
.related_pid
);
8824 res
= remote_vkill (child_pid
, rs
);
8826 error (_("Can't kill fork child process %d"), child_pid
);
8832 /* Kill any new fork children of process PID that haven't been
8833 processed by follow_fork. */
8836 kill_new_fork_children (int pid
, struct remote_state
*rs
)
8838 struct thread_info
*thread
;
8839 struct notif_client
*notif
= ¬if_client_stop
;
8840 struct queue_iter_param param
;
8842 /* Kill the fork child threads of any threads in process PID
8843 that are stopped at a fork event. */
8844 ALL_NON_EXITED_THREADS (thread
)
8846 struct target_waitstatus
*ws
= &thread
->pending_follow
;
8848 if (is_pending_fork_parent (ws
, pid
, thread
->ptid
))
8850 struct remote_state
*rs
= get_remote_state ();
8851 int child_pid
= ptid_get_pid (ws
->value
.related_pid
);
8854 res
= remote_vkill (child_pid
, rs
);
8856 error (_("Can't kill fork child process %d"), child_pid
);
8860 /* Check for any pending fork events (not reported or processed yet)
8861 in process PID and kill those fork child threads as well. */
8862 remote_notif_get_pending_events (notif
);
8864 param
.output
= NULL
;
8865 QUEUE_iterate (stop_reply_p
, stop_reply_queue
,
8866 kill_child_of_pending_fork
, ¶m
);
8870 /* Target hook to kill the current inferior. */
8873 remote_kill (struct target_ops
*ops
)
8876 int pid
= ptid_get_pid (inferior_ptid
);
8877 struct remote_state
*rs
= get_remote_state ();
8879 if (packet_support (PACKET_vKill
) != PACKET_DISABLE
)
8881 /* If we're stopped while forking and we haven't followed yet,
8882 kill the child task. We need to do this before killing the
8883 parent task because if this is a vfork then the parent will
8885 kill_new_fork_children (pid
, rs
);
8887 res
= remote_vkill (pid
, rs
);
8890 target_mourn_inferior ();
8895 /* If we are in 'target remote' mode and we are killing the only
8896 inferior, then we will tell gdbserver to exit and unpush the
8898 if (res
== -1 && !remote_multi_process_p (rs
)
8899 && number_of_live_inferiors () == 1)
8903 /* We've killed the remote end, we get to mourn it. If we are
8904 not in extended mode, mourning the inferior also unpushes
8905 remote_ops from the target stack, which closes the remote
8907 target_mourn_inferior ();
8912 error (_("Can't kill process"));
8915 /* Send a kill request to the target using the 'vKill' packet. */
8918 remote_vkill (int pid
, struct remote_state
*rs
)
8920 if (packet_support (PACKET_vKill
) == PACKET_DISABLE
)
8923 /* Tell the remote target to detach. */
8924 xsnprintf (rs
->buf
, get_remote_packet_size (), "vKill;%x", pid
);
8926 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8928 switch (packet_ok (rs
->buf
,
8929 &remote_protocol_packets
[PACKET_vKill
]))
8935 case PACKET_UNKNOWN
:
8938 internal_error (__FILE__
, __LINE__
, _("Bad result from packet_ok"));
8942 /* Send a kill request to the target using the 'k' packet. */
8945 remote_kill_k (void)
8947 /* Catch errors so the user can quit from gdb even when we
8948 aren't on speaking terms with the remote system. */
8953 CATCH (ex
, RETURN_MASK_ERROR
)
8955 if (ex
.error
== TARGET_CLOSE_ERROR
)
8957 /* If we got an (EOF) error that caused the target
8958 to go away, then we're done, that's what we wanted.
8959 "k" is susceptible to cause a premature EOF, given
8960 that the remote server isn't actually required to
8961 reply to "k", and it can happen that it doesn't
8962 even get to reply ACK to the "k". */
8966 /* Otherwise, something went wrong. We didn't actually kill
8967 the target. Just propagate the exception, and let the
8968 user or higher layers decide what to do. */
8969 throw_exception (ex
);
8975 remote_mourn (struct target_ops
*target
)
8977 struct remote_state
*rs
= get_remote_state ();
8979 /* In 'target remote' mode with one inferior, we close the connection. */
8980 if (!rs
->extended
&& number_of_live_inferiors () <= 1)
8982 unpush_target (target
);
8984 /* remote_close takes care of doing most of the clean up. */
8985 generic_mourn_inferior ();
8989 /* In case we got here due to an error, but we're going to stay
8991 rs
->waiting_for_stop_reply
= 0;
8993 /* If the current general thread belonged to the process we just
8994 detached from or has exited, the remote side current general
8995 thread becomes undefined. Considering a case like this:
8997 - We just got here due to a detach.
8998 - The process that we're detaching from happens to immediately
8999 report a global breakpoint being hit in non-stop mode, in the
9000 same thread we had selected before.
9001 - GDB attaches to this process again.
9002 - This event happens to be the next event we handle.
9004 GDB would consider that the current general thread didn't need to
9005 be set on the stub side (with Hg), since for all it knew,
9006 GENERAL_THREAD hadn't changed.
9008 Notice that although in all-stop mode, the remote server always
9009 sets the current thread to the thread reporting the stop event,
9010 that doesn't happen in non-stop mode; in non-stop, the stub *must
9011 not* change the current thread when reporting a breakpoint hit,
9012 due to the decoupling of event reporting and event handling.
9014 To keep things simple, we always invalidate our notion of the
9016 record_currthread (rs
, minus_one_ptid
);
9018 /* Call common code to mark the inferior as not running. */
9019 generic_mourn_inferior ();
9021 if (!have_inferiors ())
9023 if (!remote_multi_process_p (rs
))
9025 /* Check whether the target is running now - some remote stubs
9026 automatically restart after kill. */
9028 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9030 if (rs
->buf
[0] == 'S' || rs
->buf
[0] == 'T')
9032 /* Assume that the target has been restarted. Set
9033 inferior_ptid so that bits of core GDB realizes
9034 there's something here, e.g., so that the user can
9035 say "kill" again. */
9036 inferior_ptid
= magic_null_ptid
;
9043 extended_remote_supports_disable_randomization (struct target_ops
*self
)
9045 return packet_support (PACKET_QDisableRandomization
) == PACKET_ENABLE
;
9049 extended_remote_disable_randomization (int val
)
9051 struct remote_state
*rs
= get_remote_state ();
9054 xsnprintf (rs
->buf
, get_remote_packet_size (), "QDisableRandomization:%x",
9057 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
9059 error (_("Target does not support QDisableRandomization."));
9060 if (strcmp (reply
, "OK") != 0)
9061 error (_("Bogus QDisableRandomization reply from target: %s"), reply
);
9065 extended_remote_run (char *args
)
9067 struct remote_state
*rs
= get_remote_state ();
9069 const char *remote_exec_file
= get_remote_exec_file ();
9071 /* If the user has disabled vRun support, or we have detected that
9072 support is not available, do not try it. */
9073 if (packet_support (PACKET_vRun
) == PACKET_DISABLE
)
9076 strcpy (rs
->buf
, "vRun;");
9077 len
= strlen (rs
->buf
);
9079 if (strlen (remote_exec_file
) * 2 + len
>= get_remote_packet_size ())
9080 error (_("Remote file name too long for run packet"));
9081 len
+= 2 * bin2hex ((gdb_byte
*) remote_exec_file
, rs
->buf
+ len
,
9082 strlen (remote_exec_file
));
9084 gdb_assert (args
!= NULL
);
9087 struct cleanup
*back_to
;
9091 argv
= gdb_buildargv (args
);
9092 back_to
= make_cleanup_freeargv (argv
);
9093 for (i
= 0; argv
[i
] != NULL
; i
++)
9095 if (strlen (argv
[i
]) * 2 + 1 + len
>= get_remote_packet_size ())
9096 error (_("Argument list too long for run packet"));
9097 rs
->buf
[len
++] = ';';
9098 len
+= 2 * bin2hex ((gdb_byte
*) argv
[i
], rs
->buf
+ len
,
9101 do_cleanups (back_to
);
9104 rs
->buf
[len
++] = '\0';
9107 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9109 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_vRun
]))
9112 /* We have a wait response. All is well. */
9114 case PACKET_UNKNOWN
:
9117 if (remote_exec_file
[0] == '\0')
9118 error (_("Running the default executable on the remote target failed; "
9119 "try \"set remote exec-file\"?"));
9121 error (_("Running \"%s\" on the remote target failed"),
9124 gdb_assert_not_reached (_("bad switch"));
9128 /* In the extended protocol we want to be able to do things like
9129 "run" and have them basically work as expected. So we need
9130 a special create_inferior function. We support changing the
9131 executable file and the command line arguments, but not the
9135 extended_remote_create_inferior (struct target_ops
*ops
,
9136 char *exec_file
, char *args
,
9137 char **env
, int from_tty
)
9141 struct remote_state
*rs
= get_remote_state ();
9142 const char *remote_exec_file
= get_remote_exec_file ();
9144 /* If running asynchronously, register the target file descriptor
9145 with the event loop. */
9146 if (target_can_async_p ())
9149 /* Disable address space randomization if requested (and supported). */
9150 if (extended_remote_supports_disable_randomization (ops
))
9151 extended_remote_disable_randomization (disable_randomization
);
9153 /* Now restart the remote server. */
9154 run_worked
= extended_remote_run (args
) != -1;
9157 /* vRun was not supported. Fail if we need it to do what the
9159 if (remote_exec_file
[0])
9160 error (_("Remote target does not support \"set remote exec-file\""));
9162 error (_("Remote target does not support \"set args\" or run <ARGS>"));
9164 /* Fall back to "R". */
9165 extended_remote_restart ();
9168 if (!have_inferiors ())
9170 /* Clean up from the last time we ran, before we mark the target
9171 running again. This will mark breakpoints uninserted, and
9172 get_offsets may insert breakpoints. */
9173 init_thread_list ();
9174 init_wait_for_inferior ();
9177 /* vRun's success return is a stop reply. */
9178 stop_reply
= run_worked
? rs
->buf
: NULL
;
9179 add_current_inferior_and_thread (stop_reply
);
9181 /* Get updated offsets, if the stub uses qOffsets. */
9186 /* Given a location's target info BP_TGT and the packet buffer BUF, output
9187 the list of conditions (in agent expression bytecode format), if any, the
9188 target needs to evaluate. The output is placed into the packet buffer
9189 started from BUF and ended at BUF_END. */
9192 remote_add_target_side_condition (struct gdbarch
*gdbarch
,
9193 struct bp_target_info
*bp_tgt
, char *buf
,
9196 struct agent_expr
*aexpr
= NULL
;
9199 if (VEC_empty (agent_expr_p
, bp_tgt
->conditions
))
9202 buf
+= strlen (buf
);
9203 xsnprintf (buf
, buf_end
- buf
, "%s", ";");
9206 /* Send conditions to the target and free the vector. */
9208 VEC_iterate (agent_expr_p
, bp_tgt
->conditions
, ix
, aexpr
);
9211 xsnprintf (buf
, buf_end
- buf
, "X%x,", aexpr
->len
);
9212 buf
+= strlen (buf
);
9213 for (i
= 0; i
< aexpr
->len
; ++i
)
9214 buf
= pack_hex_byte (buf
, aexpr
->buf
[i
]);
9221 remote_add_target_side_commands (struct gdbarch
*gdbarch
,
9222 struct bp_target_info
*bp_tgt
, char *buf
)
9224 struct agent_expr
*aexpr
= NULL
;
9227 if (VEC_empty (agent_expr_p
, bp_tgt
->tcommands
))
9230 buf
+= strlen (buf
);
9232 sprintf (buf
, ";cmds:%x,", bp_tgt
->persist
);
9233 buf
+= strlen (buf
);
9235 /* Concatenate all the agent expressions that are commands into the
9238 VEC_iterate (agent_expr_p
, bp_tgt
->tcommands
, ix
, aexpr
);
9241 sprintf (buf
, "X%x,", aexpr
->len
);
9242 buf
+= strlen (buf
);
9243 for (i
= 0; i
< aexpr
->len
; ++i
)
9244 buf
= pack_hex_byte (buf
, aexpr
->buf
[i
]);
9249 /* Insert a breakpoint. On targets that have software breakpoint
9250 support, we ask the remote target to do the work; on targets
9251 which don't, we insert a traditional memory breakpoint. */
9254 remote_insert_breakpoint (struct target_ops
*ops
,
9255 struct gdbarch
*gdbarch
,
9256 struct bp_target_info
*bp_tgt
)
9258 /* Try the "Z" s/w breakpoint packet if it is not already disabled.
9259 If it succeeds, then set the support to PACKET_ENABLE. If it
9260 fails, and the user has explicitly requested the Z support then
9261 report an error, otherwise, mark it disabled and go on. */
9263 if (packet_support (PACKET_Z0
) != PACKET_DISABLE
)
9265 CORE_ADDR addr
= bp_tgt
->reqstd_address
;
9266 struct remote_state
*rs
;
9270 /* Make sure the remote is pointing at the right process, if
9272 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
9273 set_general_process ();
9275 gdbarch_remote_breakpoint_from_pc (gdbarch
, &addr
, &bpsize
);
9277 rs
= get_remote_state ();
9279 endbuf
= rs
->buf
+ get_remote_packet_size ();
9284 addr
= (ULONGEST
) remote_address_masked (addr
);
9285 p
+= hexnumstr (p
, addr
);
9286 xsnprintf (p
, endbuf
- p
, ",%d", bpsize
);
9288 if (remote_supports_cond_breakpoints (ops
))
9289 remote_add_target_side_condition (gdbarch
, bp_tgt
, p
, endbuf
);
9291 if (remote_can_run_breakpoint_commands (ops
))
9292 remote_add_target_side_commands (gdbarch
, bp_tgt
, p
);
9295 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9297 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
]))
9302 bp_tgt
->placed_address
= addr
;
9303 bp_tgt
->placed_size
= bpsize
;
9305 case PACKET_UNKNOWN
:
9310 /* If this breakpoint has target-side commands but this stub doesn't
9311 support Z0 packets, throw error. */
9312 if (!VEC_empty (agent_expr_p
, bp_tgt
->tcommands
))
9313 throw_error (NOT_SUPPORTED_ERROR
, _("\
9314 Target doesn't support breakpoints that have target side commands."));
9316 return memory_insert_breakpoint (ops
, gdbarch
, bp_tgt
);
9320 remote_remove_breakpoint (struct target_ops
*ops
,
9321 struct gdbarch
*gdbarch
,
9322 struct bp_target_info
*bp_tgt
)
9324 CORE_ADDR addr
= bp_tgt
->placed_address
;
9325 struct remote_state
*rs
= get_remote_state ();
9327 if (packet_support (PACKET_Z0
) != PACKET_DISABLE
)
9330 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
9332 /* Make sure the remote is pointing at the right process, if
9334 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
9335 set_general_process ();
9341 addr
= (ULONGEST
) remote_address_masked (bp_tgt
->placed_address
);
9342 p
+= hexnumstr (p
, addr
);
9343 xsnprintf (p
, endbuf
- p
, ",%d", bp_tgt
->placed_size
);
9346 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9348 return (rs
->buf
[0] == 'E');
9351 return memory_remove_breakpoint (ops
, gdbarch
, bp_tgt
);
9354 static enum Z_packet_type
9355 watchpoint_to_Z_packet (int type
)
9360 return Z_PACKET_WRITE_WP
;
9363 return Z_PACKET_READ_WP
;
9366 return Z_PACKET_ACCESS_WP
;
9369 internal_error (__FILE__
, __LINE__
,
9370 _("hw_bp_to_z: bad watchpoint type %d"), type
);
9375 remote_insert_watchpoint (struct target_ops
*self
, CORE_ADDR addr
, int len
,
9376 enum target_hw_bp_type type
, struct expression
*cond
)
9378 struct remote_state
*rs
= get_remote_state ();
9379 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
9381 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
9383 if (packet_support (PACKET_Z0
+ packet
) == PACKET_DISABLE
)
9386 /* Make sure the remote is pointing at the right process, if
9388 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
9389 set_general_process ();
9391 xsnprintf (rs
->buf
, endbuf
- rs
->buf
, "Z%x,", packet
);
9392 p
= strchr (rs
->buf
, '\0');
9393 addr
= remote_address_masked (addr
);
9394 p
+= hexnumstr (p
, (ULONGEST
) addr
);
9395 xsnprintf (p
, endbuf
- p
, ",%x", len
);
9398 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9400 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
+ packet
]))
9404 case PACKET_UNKNOWN
:
9409 internal_error (__FILE__
, __LINE__
,
9410 _("remote_insert_watchpoint: reached end of function"));
9414 remote_watchpoint_addr_within_range (struct target_ops
*target
, CORE_ADDR addr
,
9415 CORE_ADDR start
, int length
)
9417 CORE_ADDR diff
= remote_address_masked (addr
- start
);
9419 return diff
< length
;
9424 remote_remove_watchpoint (struct target_ops
*self
, CORE_ADDR addr
, int len
,
9425 enum target_hw_bp_type type
, struct expression
*cond
)
9427 struct remote_state
*rs
= get_remote_state ();
9428 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
9430 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
9432 if (packet_support (PACKET_Z0
+ packet
) == PACKET_DISABLE
)
9435 /* Make sure the remote is pointing at the right process, if
9437 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
9438 set_general_process ();
9440 xsnprintf (rs
->buf
, endbuf
- rs
->buf
, "z%x,", packet
);
9441 p
= strchr (rs
->buf
, '\0');
9442 addr
= remote_address_masked (addr
);
9443 p
+= hexnumstr (p
, (ULONGEST
) addr
);
9444 xsnprintf (p
, endbuf
- p
, ",%x", len
);
9446 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9448 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
+ packet
]))
9451 case PACKET_UNKNOWN
:
9456 internal_error (__FILE__
, __LINE__
,
9457 _("remote_remove_watchpoint: reached end of function"));
9461 int remote_hw_watchpoint_limit
= -1;
9462 int remote_hw_watchpoint_length_limit
= -1;
9463 int remote_hw_breakpoint_limit
= -1;
9466 remote_region_ok_for_hw_watchpoint (struct target_ops
*self
,
9467 CORE_ADDR addr
, int len
)
9469 if (remote_hw_watchpoint_length_limit
== 0)
9471 else if (remote_hw_watchpoint_length_limit
< 0)
9473 else if (len
<= remote_hw_watchpoint_length_limit
)
9480 remote_check_watch_resources (struct target_ops
*self
,
9481 enum bptype type
, int cnt
, int ot
)
9483 if (type
== bp_hardware_breakpoint
)
9485 if (remote_hw_breakpoint_limit
== 0)
9487 else if (remote_hw_breakpoint_limit
< 0)
9489 else if (cnt
<= remote_hw_breakpoint_limit
)
9494 if (remote_hw_watchpoint_limit
== 0)
9496 else if (remote_hw_watchpoint_limit
< 0)
9500 else if (cnt
<= remote_hw_watchpoint_limit
)
9506 /* The to_stopped_by_sw_breakpoint method of target remote. */
9509 remote_stopped_by_sw_breakpoint (struct target_ops
*ops
)
9511 struct thread_info
*thread
= inferior_thread ();
9513 return (thread
->priv
!= NULL
9514 && thread
->priv
->stop_reason
== TARGET_STOPPED_BY_SW_BREAKPOINT
);
9517 /* The to_supports_stopped_by_sw_breakpoint method of target
9521 remote_supports_stopped_by_sw_breakpoint (struct target_ops
*ops
)
9523 return (packet_support (PACKET_swbreak_feature
) == PACKET_ENABLE
);
9526 /* The to_stopped_by_hw_breakpoint method of target remote. */
9529 remote_stopped_by_hw_breakpoint (struct target_ops
*ops
)
9531 struct thread_info
*thread
= inferior_thread ();
9533 return (thread
->priv
!= NULL
9534 && thread
->priv
->stop_reason
== TARGET_STOPPED_BY_HW_BREAKPOINT
);
9537 /* The to_supports_stopped_by_hw_breakpoint method of target
9541 remote_supports_stopped_by_hw_breakpoint (struct target_ops
*ops
)
9543 return (packet_support (PACKET_hwbreak_feature
) == PACKET_ENABLE
);
9547 remote_stopped_by_watchpoint (struct target_ops
*ops
)
9549 struct thread_info
*thread
= inferior_thread ();
9551 return (thread
->priv
!= NULL
9552 && thread
->priv
->stop_reason
== TARGET_STOPPED_BY_WATCHPOINT
);
9556 remote_stopped_data_address (struct target_ops
*target
, CORE_ADDR
*addr_p
)
9558 struct thread_info
*thread
= inferior_thread ();
9560 if (thread
->priv
!= NULL
9561 && thread
->priv
->stop_reason
== TARGET_STOPPED_BY_WATCHPOINT
)
9563 *addr_p
= thread
->priv
->watch_data_address
;
9572 remote_insert_hw_breakpoint (struct target_ops
*self
, struct gdbarch
*gdbarch
,
9573 struct bp_target_info
*bp_tgt
)
9575 CORE_ADDR addr
= bp_tgt
->reqstd_address
;
9576 struct remote_state
*rs
;
9581 /* The length field should be set to the size of a breakpoint
9582 instruction, even though we aren't inserting one ourselves. */
9584 gdbarch_remote_breakpoint_from_pc (gdbarch
, &addr
, &bpsize
);
9586 if (packet_support (PACKET_Z1
) == PACKET_DISABLE
)
9589 /* Make sure the remote is pointing at the right process, if
9591 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
9592 set_general_process ();
9594 rs
= get_remote_state ();
9596 endbuf
= rs
->buf
+ get_remote_packet_size ();
9602 addr
= remote_address_masked (addr
);
9603 p
+= hexnumstr (p
, (ULONGEST
) addr
);
9604 xsnprintf (p
, endbuf
- p
, ",%x", bpsize
);
9606 if (remote_supports_cond_breakpoints (self
))
9607 remote_add_target_side_condition (gdbarch
, bp_tgt
, p
, endbuf
);
9609 if (remote_can_run_breakpoint_commands (self
))
9610 remote_add_target_side_commands (gdbarch
, bp_tgt
, p
);
9613 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9615 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z1
]))
9618 if (rs
->buf
[1] == '.')
9620 message
= strchr (rs
->buf
+ 2, '.');
9622 error (_("Remote failure reply: %s"), message
+ 1);
9625 case PACKET_UNKNOWN
:
9628 bp_tgt
->placed_address
= addr
;
9629 bp_tgt
->placed_size
= bpsize
;
9632 internal_error (__FILE__
, __LINE__
,
9633 _("remote_insert_hw_breakpoint: reached end of function"));
9638 remote_remove_hw_breakpoint (struct target_ops
*self
, struct gdbarch
*gdbarch
,
9639 struct bp_target_info
*bp_tgt
)
9642 struct remote_state
*rs
= get_remote_state ();
9644 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
9646 if (packet_support (PACKET_Z1
) == PACKET_DISABLE
)
9649 /* Make sure the remote is pointing at the right process, if
9651 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
9652 set_general_process ();
9658 addr
= remote_address_masked (bp_tgt
->placed_address
);
9659 p
+= hexnumstr (p
, (ULONGEST
) addr
);
9660 xsnprintf (p
, endbuf
- p
, ",%x", bp_tgt
->placed_size
);
9663 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9665 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z1
]))
9668 case PACKET_UNKNOWN
:
9673 internal_error (__FILE__
, __LINE__
,
9674 _("remote_remove_hw_breakpoint: reached end of function"));
9677 /* Verify memory using the "qCRC:" request. */
9680 remote_verify_memory (struct target_ops
*ops
,
9681 const gdb_byte
*data
, CORE_ADDR lma
, ULONGEST size
)
9683 struct remote_state
*rs
= get_remote_state ();
9684 unsigned long host_crc
, target_crc
;
9687 /* It doesn't make sense to use qCRC if the remote target is
9688 connected but not running. */
9689 if (target_has_execution
&& packet_support (PACKET_qCRC
) != PACKET_DISABLE
)
9691 enum packet_result result
;
9693 /* Make sure the remote is pointing at the right process. */
9694 set_general_process ();
9696 /* FIXME: assumes lma can fit into long. */
9697 xsnprintf (rs
->buf
, get_remote_packet_size (), "qCRC:%lx,%lx",
9698 (long) lma
, (long) size
);
9701 /* Be clever; compute the host_crc before waiting for target
9703 host_crc
= xcrc32 (data
, size
, 0xffffffff);
9705 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9707 result
= packet_ok (rs
->buf
,
9708 &remote_protocol_packets
[PACKET_qCRC
]);
9709 if (result
== PACKET_ERROR
)
9711 else if (result
== PACKET_OK
)
9713 for (target_crc
= 0, tmp
= &rs
->buf
[1]; *tmp
; tmp
++)
9714 target_crc
= target_crc
* 16 + fromhex (*tmp
);
9716 return (host_crc
== target_crc
);
9720 return simple_verify_memory (ops
, data
, lma
, size
);
9723 /* compare-sections command
9725 With no arguments, compares each loadable section in the exec bfd
9726 with the same memory range on the target, and reports mismatches.
9727 Useful for verifying the image on the target against the exec file. */
9730 compare_sections_command (char *args
, int from_tty
)
9733 struct cleanup
*old_chain
;
9735 const char *sectname
;
9744 error (_("command cannot be used without an exec file"));
9746 /* Make sure the remote is pointing at the right process. */
9747 set_general_process ();
9749 if (args
!= NULL
&& strcmp (args
, "-r") == 0)
9755 for (s
= exec_bfd
->sections
; s
; s
= s
->next
)
9757 if (!(s
->flags
& SEC_LOAD
))
9758 continue; /* Skip non-loadable section. */
9760 if (read_only
&& (s
->flags
& SEC_READONLY
) == 0)
9761 continue; /* Skip writeable sections */
9763 size
= bfd_get_section_size (s
);
9765 continue; /* Skip zero-length section. */
9767 sectname
= bfd_get_section_name (exec_bfd
, s
);
9768 if (args
&& strcmp (args
, sectname
) != 0)
9769 continue; /* Not the section selected by user. */
9771 matched
= 1; /* Do this section. */
9774 sectdata
= (gdb_byte
*) xmalloc (size
);
9775 old_chain
= make_cleanup (xfree
, sectdata
);
9776 bfd_get_section_contents (exec_bfd
, s
, sectdata
, 0, size
);
9778 res
= target_verify_memory (sectdata
, lma
, size
);
9781 error (_("target memory fault, section %s, range %s -- %s"), sectname
,
9782 paddress (target_gdbarch (), lma
),
9783 paddress (target_gdbarch (), lma
+ size
));
9785 printf_filtered ("Section %s, range %s -- %s: ", sectname
,
9786 paddress (target_gdbarch (), lma
),
9787 paddress (target_gdbarch (), lma
+ size
));
9789 printf_filtered ("matched.\n");
9792 printf_filtered ("MIS-MATCHED!\n");
9796 do_cleanups (old_chain
);
9799 warning (_("One or more sections of the target image does not match\n\
9800 the loaded file\n"));
9801 if (args
&& !matched
)
9802 printf_filtered (_("No loaded section named '%s'.\n"), args
);
9805 /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET
9806 into remote target. The number of bytes written to the remote
9807 target is returned, or -1 for error. */
9809 static enum target_xfer_status
9810 remote_write_qxfer (struct target_ops
*ops
, const char *object_name
,
9811 const char *annex
, const gdb_byte
*writebuf
,
9812 ULONGEST offset
, LONGEST len
, ULONGEST
*xfered_len
,
9813 struct packet_config
*packet
)
9817 struct remote_state
*rs
= get_remote_state ();
9818 int max_size
= get_memory_write_packet_size ();
9820 if (packet
->support
== PACKET_DISABLE
)
9821 return TARGET_XFER_E_IO
;
9823 /* Insert header. */
9824 i
= snprintf (rs
->buf
, max_size
,
9825 "qXfer:%s:write:%s:%s:",
9826 object_name
, annex
? annex
: "",
9827 phex_nz (offset
, sizeof offset
));
9828 max_size
-= (i
+ 1);
9830 /* Escape as much data as fits into rs->buf. */
9831 buf_len
= remote_escape_output
9832 (writebuf
, len
, 1, (gdb_byte
*) rs
->buf
+ i
, &max_size
, max_size
);
9834 if (putpkt_binary (rs
->buf
, i
+ buf_len
) < 0
9835 || getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) < 0
9836 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
9837 return TARGET_XFER_E_IO
;
9839 unpack_varlen_hex (rs
->buf
, &n
);
9842 return TARGET_XFER_OK
;
9845 /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet.
9846 Data at OFFSET, of up to LEN bytes, is read into READBUF; the
9847 number of bytes read is returned, or 0 for EOF, or -1 for error.
9848 The number of bytes read may be less than LEN without indicating an
9849 EOF. PACKET is checked and updated to indicate whether the remote
9850 target supports this object. */
9852 static enum target_xfer_status
9853 remote_read_qxfer (struct target_ops
*ops
, const char *object_name
,
9855 gdb_byte
*readbuf
, ULONGEST offset
, LONGEST len
,
9856 ULONGEST
*xfered_len
,
9857 struct packet_config
*packet
)
9859 struct remote_state
*rs
= get_remote_state ();
9860 LONGEST i
, n
, packet_len
;
9862 if (packet
->support
== PACKET_DISABLE
)
9863 return TARGET_XFER_E_IO
;
9865 /* Check whether we've cached an end-of-object packet that matches
9867 if (rs
->finished_object
)
9869 if (strcmp (object_name
, rs
->finished_object
) == 0
9870 && strcmp (annex
? annex
: "", rs
->finished_annex
) == 0
9871 && offset
== rs
->finished_offset
)
9872 return TARGET_XFER_EOF
;
9875 /* Otherwise, we're now reading something different. Discard
9877 xfree (rs
->finished_object
);
9878 xfree (rs
->finished_annex
);
9879 rs
->finished_object
= NULL
;
9880 rs
->finished_annex
= NULL
;
9883 /* Request only enough to fit in a single packet. The actual data
9884 may not, since we don't know how much of it will need to be escaped;
9885 the target is free to respond with slightly less data. We subtract
9886 five to account for the response type and the protocol frame. */
9887 n
= min (get_remote_packet_size () - 5, len
);
9888 snprintf (rs
->buf
, get_remote_packet_size () - 4, "qXfer:%s:read:%s:%s,%s",
9889 object_name
, annex
? annex
: "",
9890 phex_nz (offset
, sizeof offset
),
9891 phex_nz (n
, sizeof n
));
9892 i
= putpkt (rs
->buf
);
9894 return TARGET_XFER_E_IO
;
9897 packet_len
= getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0);
9898 if (packet_len
< 0 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
9899 return TARGET_XFER_E_IO
;
9901 if (rs
->buf
[0] != 'l' && rs
->buf
[0] != 'm')
9902 error (_("Unknown remote qXfer reply: %s"), rs
->buf
);
9904 /* 'm' means there is (or at least might be) more data after this
9905 batch. That does not make sense unless there's at least one byte
9906 of data in this reply. */
9907 if (rs
->buf
[0] == 'm' && packet_len
== 1)
9908 error (_("Remote qXfer reply contained no data."));
9910 /* Got some data. */
9911 i
= remote_unescape_input ((gdb_byte
*) rs
->buf
+ 1,
9912 packet_len
- 1, readbuf
, n
);
9914 /* 'l' is an EOF marker, possibly including a final block of data,
9915 or possibly empty. If we have the final block of a non-empty
9916 object, record this fact to bypass a subsequent partial read. */
9917 if (rs
->buf
[0] == 'l' && offset
+ i
> 0)
9919 rs
->finished_object
= xstrdup (object_name
);
9920 rs
->finished_annex
= xstrdup (annex
? annex
: "");
9921 rs
->finished_offset
= offset
+ i
;
9925 return TARGET_XFER_EOF
;
9929 return TARGET_XFER_OK
;
9933 static enum target_xfer_status
9934 remote_xfer_partial (struct target_ops
*ops
, enum target_object object
,
9935 const char *annex
, gdb_byte
*readbuf
,
9936 const gdb_byte
*writebuf
, ULONGEST offset
, ULONGEST len
,
9937 ULONGEST
*xfered_len
)
9939 struct remote_state
*rs
;
9943 int unit_size
= gdbarch_addressable_memory_unit_size (target_gdbarch ());
9945 set_remote_traceframe ();
9946 set_general_thread (inferior_ptid
);
9948 rs
= get_remote_state ();
9950 /* Handle memory using the standard memory routines. */
9951 if (object
== TARGET_OBJECT_MEMORY
)
9953 /* If the remote target is connected but not running, we should
9954 pass this request down to a lower stratum (e.g. the executable
9956 if (!target_has_execution
)
9957 return TARGET_XFER_EOF
;
9959 if (writebuf
!= NULL
)
9960 return remote_write_bytes (offset
, writebuf
, len
, unit_size
,
9963 return remote_read_bytes (ops
, offset
, readbuf
, len
, unit_size
,
9967 /* Handle SPU memory using qxfer packets. */
9968 if (object
== TARGET_OBJECT_SPU
)
9971 return remote_read_qxfer (ops
, "spu", annex
, readbuf
, offset
, len
,
9972 xfered_len
, &remote_protocol_packets
9973 [PACKET_qXfer_spu_read
]);
9975 return remote_write_qxfer (ops
, "spu", annex
, writebuf
, offset
, len
,
9976 xfered_len
, &remote_protocol_packets
9977 [PACKET_qXfer_spu_write
]);
9980 /* Handle extra signal info using qxfer packets. */
9981 if (object
== TARGET_OBJECT_SIGNAL_INFO
)
9984 return remote_read_qxfer (ops
, "siginfo", annex
, readbuf
, offset
, len
,
9985 xfered_len
, &remote_protocol_packets
9986 [PACKET_qXfer_siginfo_read
]);
9988 return remote_write_qxfer (ops
, "siginfo", annex
,
9989 writebuf
, offset
, len
, xfered_len
,
9990 &remote_protocol_packets
9991 [PACKET_qXfer_siginfo_write
]);
9994 if (object
== TARGET_OBJECT_STATIC_TRACE_DATA
)
9997 return remote_read_qxfer (ops
, "statictrace", annex
,
9998 readbuf
, offset
, len
, xfered_len
,
9999 &remote_protocol_packets
10000 [PACKET_qXfer_statictrace_read
]);
10002 return TARGET_XFER_E_IO
;
10005 /* Only handle flash writes. */
10006 if (writebuf
!= NULL
)
10010 case TARGET_OBJECT_FLASH
:
10011 return remote_flash_write (ops
, offset
, len
, xfered_len
,
10015 return TARGET_XFER_E_IO
;
10019 /* Map pre-existing objects onto letters. DO NOT do this for new
10020 objects!!! Instead specify new query packets. */
10023 case TARGET_OBJECT_AVR
:
10027 case TARGET_OBJECT_AUXV
:
10028 gdb_assert (annex
== NULL
);
10029 return remote_read_qxfer (ops
, "auxv", annex
, readbuf
, offset
, len
,
10031 &remote_protocol_packets
[PACKET_qXfer_auxv
]);
10033 case TARGET_OBJECT_AVAILABLE_FEATURES
:
10034 return remote_read_qxfer
10035 (ops
, "features", annex
, readbuf
, offset
, len
, xfered_len
,
10036 &remote_protocol_packets
[PACKET_qXfer_features
]);
10038 case TARGET_OBJECT_LIBRARIES
:
10039 return remote_read_qxfer
10040 (ops
, "libraries", annex
, readbuf
, offset
, len
, xfered_len
,
10041 &remote_protocol_packets
[PACKET_qXfer_libraries
]);
10043 case TARGET_OBJECT_LIBRARIES_SVR4
:
10044 return remote_read_qxfer
10045 (ops
, "libraries-svr4", annex
, readbuf
, offset
, len
, xfered_len
,
10046 &remote_protocol_packets
[PACKET_qXfer_libraries_svr4
]);
10048 case TARGET_OBJECT_MEMORY_MAP
:
10049 gdb_assert (annex
== NULL
);
10050 return remote_read_qxfer (ops
, "memory-map", annex
, readbuf
, offset
, len
,
10052 &remote_protocol_packets
[PACKET_qXfer_memory_map
]);
10054 case TARGET_OBJECT_OSDATA
:
10055 /* Should only get here if we're connected. */
10056 gdb_assert (rs
->remote_desc
);
10057 return remote_read_qxfer
10058 (ops
, "osdata", annex
, readbuf
, offset
, len
, xfered_len
,
10059 &remote_protocol_packets
[PACKET_qXfer_osdata
]);
10061 case TARGET_OBJECT_THREADS
:
10062 gdb_assert (annex
== NULL
);
10063 return remote_read_qxfer (ops
, "threads", annex
, readbuf
, offset
, len
,
10065 &remote_protocol_packets
[PACKET_qXfer_threads
]);
10067 case TARGET_OBJECT_TRACEFRAME_INFO
:
10068 gdb_assert (annex
== NULL
);
10069 return remote_read_qxfer
10070 (ops
, "traceframe-info", annex
, readbuf
, offset
, len
, xfered_len
,
10071 &remote_protocol_packets
[PACKET_qXfer_traceframe_info
]);
10073 case TARGET_OBJECT_FDPIC
:
10074 return remote_read_qxfer (ops
, "fdpic", annex
, readbuf
, offset
, len
,
10076 &remote_protocol_packets
[PACKET_qXfer_fdpic
]);
10078 case TARGET_OBJECT_OPENVMS_UIB
:
10079 return remote_read_qxfer (ops
, "uib", annex
, readbuf
, offset
, len
,
10081 &remote_protocol_packets
[PACKET_qXfer_uib
]);
10083 case TARGET_OBJECT_BTRACE
:
10084 return remote_read_qxfer (ops
, "btrace", annex
, readbuf
, offset
, len
,
10086 &remote_protocol_packets
[PACKET_qXfer_btrace
]);
10088 case TARGET_OBJECT_BTRACE_CONF
:
10089 return remote_read_qxfer (ops
, "btrace-conf", annex
, readbuf
, offset
,
10091 &remote_protocol_packets
[PACKET_qXfer_btrace_conf
]);
10093 case TARGET_OBJECT_EXEC_FILE
:
10094 return remote_read_qxfer (ops
, "exec-file", annex
, readbuf
, offset
,
10096 &remote_protocol_packets
[PACKET_qXfer_exec_file
]);
10099 return TARGET_XFER_E_IO
;
10102 /* Minimum outbuf size is get_remote_packet_size (). If LEN is not
10103 large enough let the caller deal with it. */
10104 if (len
< get_remote_packet_size ())
10105 return TARGET_XFER_E_IO
;
10106 len
= get_remote_packet_size ();
10108 /* Except for querying the minimum buffer size, target must be open. */
10109 if (!rs
->remote_desc
)
10110 error (_("remote query is only available after target open"));
10112 gdb_assert (annex
!= NULL
);
10113 gdb_assert (readbuf
!= NULL
);
10117 *p2
++ = query_type
;
10119 /* We used one buffer char for the remote protocol q command and
10120 another for the query type. As the remote protocol encapsulation
10121 uses 4 chars plus one extra in case we are debugging
10122 (remote_debug), we have PBUFZIZ - 7 left to pack the query
10125 while (annex
[i
] && (i
< (get_remote_packet_size () - 8)))
10127 /* Bad caller may have sent forbidden characters. */
10128 gdb_assert (isprint (annex
[i
]) && annex
[i
] != '$' && annex
[i
] != '#');
10133 gdb_assert (annex
[i
] == '\0');
10135 i
= putpkt (rs
->buf
);
10137 return TARGET_XFER_E_IO
;
10139 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
10140 strcpy ((char *) readbuf
, rs
->buf
);
10142 *xfered_len
= strlen ((char *) readbuf
);
10143 return TARGET_XFER_OK
;
10147 remote_search_memory (struct target_ops
* ops
,
10148 CORE_ADDR start_addr
, ULONGEST search_space_len
,
10149 const gdb_byte
*pattern
, ULONGEST pattern_len
,
10150 CORE_ADDR
*found_addrp
)
10152 int addr_size
= gdbarch_addr_bit (target_gdbarch ()) / 8;
10153 struct remote_state
*rs
= get_remote_state ();
10154 int max_size
= get_memory_write_packet_size ();
10155 struct packet_config
*packet
=
10156 &remote_protocol_packets
[PACKET_qSearch_memory
];
10157 /* Number of packet bytes used to encode the pattern;
10158 this could be more than PATTERN_LEN due to escape characters. */
10159 int escaped_pattern_len
;
10160 /* Amount of pattern that was encodable in the packet. */
10161 int used_pattern_len
;
10164 ULONGEST found_addr
;
10166 /* Don't go to the target if we don't have to.
10167 This is done before checking packet->support to avoid the possibility that
10168 a success for this edge case means the facility works in general. */
10169 if (pattern_len
> search_space_len
)
10171 if (pattern_len
== 0)
10173 *found_addrp
= start_addr
;
10177 /* If we already know the packet isn't supported, fall back to the simple
10178 way of searching memory. */
10180 if (packet_config_support (packet
) == PACKET_DISABLE
)
10182 /* Target doesn't provided special support, fall back and use the
10183 standard support (copy memory and do the search here). */
10184 return simple_search_memory (ops
, start_addr
, search_space_len
,
10185 pattern
, pattern_len
, found_addrp
);
10188 /* Make sure the remote is pointing at the right process. */
10189 set_general_process ();
10191 /* Insert header. */
10192 i
= snprintf (rs
->buf
, max_size
,
10193 "qSearch:memory:%s;%s;",
10194 phex_nz (start_addr
, addr_size
),
10195 phex_nz (search_space_len
, sizeof (search_space_len
)));
10196 max_size
-= (i
+ 1);
10198 /* Escape as much data as fits into rs->buf. */
10199 escaped_pattern_len
=
10200 remote_escape_output (pattern
, pattern_len
, 1, (gdb_byte
*) rs
->buf
+ i
,
10201 &used_pattern_len
, max_size
);
10203 /* Bail if the pattern is too large. */
10204 if (used_pattern_len
!= pattern_len
)
10205 error (_("Pattern is too large to transmit to remote target."));
10207 if (putpkt_binary (rs
->buf
, i
+ escaped_pattern_len
) < 0
10208 || getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) < 0
10209 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
10211 /* The request may not have worked because the command is not
10212 supported. If so, fall back to the simple way. */
10213 if (packet
->support
== PACKET_DISABLE
)
10215 return simple_search_memory (ops
, start_addr
, search_space_len
,
10216 pattern
, pattern_len
, found_addrp
);
10221 if (rs
->buf
[0] == '0')
10223 else if (rs
->buf
[0] == '1')
10226 if (rs
->buf
[1] != ',')
10227 error (_("Unknown qSearch:memory reply: %s"), rs
->buf
);
10228 unpack_varlen_hex (rs
->buf
+ 2, &found_addr
);
10229 *found_addrp
= found_addr
;
10232 error (_("Unknown qSearch:memory reply: %s"), rs
->buf
);
10238 remote_rcmd (struct target_ops
*self
, const char *command
,
10239 struct ui_file
*outbuf
)
10241 struct remote_state
*rs
= get_remote_state ();
10244 if (!rs
->remote_desc
)
10245 error (_("remote rcmd is only available after target open"));
10247 /* Send a NULL command across as an empty command. */
10248 if (command
== NULL
)
10251 /* The query prefix. */
10252 strcpy (rs
->buf
, "qRcmd,");
10253 p
= strchr (rs
->buf
, '\0');
10255 if ((strlen (rs
->buf
) + strlen (command
) * 2 + 8/*misc*/)
10256 > get_remote_packet_size ())
10257 error (_("\"monitor\" command ``%s'' is too long."), command
);
10259 /* Encode the actual command. */
10260 bin2hex ((const gdb_byte
*) command
, p
, strlen (command
));
10262 if (putpkt (rs
->buf
) < 0)
10263 error (_("Communication problem with target."));
10265 /* get/display the response */
10270 /* XXX - see also remote_get_noisy_reply(). */
10271 QUIT
; /* Allow user to bail out with ^C. */
10273 if (getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) == -1)
10275 /* Timeout. Continue to (try to) read responses.
10276 This is better than stopping with an error, assuming the stub
10277 is still executing the (long) monitor command.
10278 If needed, the user can interrupt gdb using C-c, obtaining
10279 an effect similar to stop on timeout. */
10283 if (buf
[0] == '\0')
10284 error (_("Target does not support this command."));
10285 if (buf
[0] == 'O' && buf
[1] != 'K')
10287 remote_console_output (buf
+ 1); /* 'O' message from stub. */
10290 if (strcmp (buf
, "OK") == 0)
10292 if (strlen (buf
) == 3 && buf
[0] == 'E'
10293 && isdigit (buf
[1]) && isdigit (buf
[2]))
10295 error (_("Protocol error with Rcmd"));
10297 for (p
= buf
; p
[0] != '\0' && p
[1] != '\0'; p
+= 2)
10299 char c
= (fromhex (p
[0]) << 4) + fromhex (p
[1]);
10301 fputc_unfiltered (c
, outbuf
);
10307 static VEC(mem_region_s
) *
10308 remote_memory_map (struct target_ops
*ops
)
10310 VEC(mem_region_s
) *result
= NULL
;
10311 char *text
= target_read_stralloc (¤t_target
,
10312 TARGET_OBJECT_MEMORY_MAP
, NULL
);
10316 struct cleanup
*back_to
= make_cleanup (xfree
, text
);
10318 result
= parse_memory_map (text
);
10319 do_cleanups (back_to
);
10326 packet_command (char *args
, int from_tty
)
10328 struct remote_state
*rs
= get_remote_state ();
10330 if (!rs
->remote_desc
)
10331 error (_("command can only be used with remote target"));
10334 error (_("remote-packet command requires packet text as argument"));
10336 puts_filtered ("sending: ");
10337 print_packet (args
);
10338 puts_filtered ("\n");
10341 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
10342 puts_filtered ("received: ");
10343 print_packet (rs
->buf
);
10344 puts_filtered ("\n");
10348 /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */
10350 static void display_thread_info (struct gdb_ext_thread_info
*info
);
10352 static void threadset_test_cmd (char *cmd
, int tty
);
10354 static void threadalive_test (char *cmd
, int tty
);
10356 static void threadlist_test_cmd (char *cmd
, int tty
);
10358 int get_and_display_threadinfo (threadref
*ref
);
10360 static void threadinfo_test_cmd (char *cmd
, int tty
);
10362 static int thread_display_step (threadref
*ref
, void *context
);
10364 static void threadlist_update_test_cmd (char *cmd
, int tty
);
10366 static void init_remote_threadtests (void);
10368 #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */
10371 threadset_test_cmd (char *cmd
, int tty
)
10373 int sample_thread
= SAMPLE_THREAD
;
10375 printf_filtered (_("Remote threadset test\n"));
10376 set_general_thread (sample_thread
);
10381 threadalive_test (char *cmd
, int tty
)
10383 int sample_thread
= SAMPLE_THREAD
;
10384 int pid
= ptid_get_pid (inferior_ptid
);
10385 ptid_t ptid
= ptid_build (pid
, sample_thread
, 0);
10387 if (remote_thread_alive (ptid
))
10388 printf_filtered ("PASS: Thread alive test\n");
10390 printf_filtered ("FAIL: Thread alive test\n");
10393 void output_threadid (char *title
, threadref
*ref
);
10396 output_threadid (char *title
, threadref
*ref
)
10400 pack_threadid (&hexid
[0], ref
); /* Convert threead id into hex. */
10402 printf_filtered ("%s %s\n", title
, (&hexid
[0]));
10406 threadlist_test_cmd (char *cmd
, int tty
)
10409 threadref nextthread
;
10410 int done
, result_count
;
10411 threadref threadlist
[3];
10413 printf_filtered ("Remote Threadlist test\n");
10414 if (!remote_get_threadlist (startflag
, &nextthread
, 3, &done
,
10415 &result_count
, &threadlist
[0]))
10416 printf_filtered ("FAIL: threadlist test\n");
10419 threadref
*scan
= threadlist
;
10420 threadref
*limit
= scan
+ result_count
;
10422 while (scan
< limit
)
10423 output_threadid (" thread ", scan
++);
10428 display_thread_info (struct gdb_ext_thread_info
*info
)
10430 output_threadid ("Threadid: ", &info
->threadid
);
10431 printf_filtered ("Name: %s\n ", info
->shortname
);
10432 printf_filtered ("State: %s\n", info
->display
);
10433 printf_filtered ("other: %s\n\n", info
->more_display
);
10437 get_and_display_threadinfo (threadref
*ref
)
10441 struct gdb_ext_thread_info threadinfo
;
10443 set
= TAG_THREADID
| TAG_EXISTS
| TAG_THREADNAME
10444 | TAG_MOREDISPLAY
| TAG_DISPLAY
;
10445 if (0 != (result
= remote_get_threadinfo (ref
, set
, &threadinfo
)))
10446 display_thread_info (&threadinfo
);
10451 threadinfo_test_cmd (char *cmd
, int tty
)
10453 int athread
= SAMPLE_THREAD
;
10457 int_to_threadref (&thread
, athread
);
10458 printf_filtered ("Remote Threadinfo test\n");
10459 if (!get_and_display_threadinfo (&thread
))
10460 printf_filtered ("FAIL cannot get thread info\n");
10464 thread_display_step (threadref
*ref
, void *context
)
10466 /* output_threadid(" threadstep ",ref); *//* simple test */
10467 return get_and_display_threadinfo (ref
);
10471 threadlist_update_test_cmd (char *cmd
, int tty
)
10473 printf_filtered ("Remote Threadlist update test\n");
10474 remote_threadlist_iterator (thread_display_step
, 0, CRAZY_MAX_THREADS
);
10478 init_remote_threadtests (void)
10480 add_com ("tlist", class_obscure
, threadlist_test_cmd
,
10481 _("Fetch and print the remote list of "
10482 "thread identifiers, one pkt only"));
10483 add_com ("tinfo", class_obscure
, threadinfo_test_cmd
,
10484 _("Fetch and display info about one thread"));
10485 add_com ("tset", class_obscure
, threadset_test_cmd
,
10486 _("Test setting to a different thread"));
10487 add_com ("tupd", class_obscure
, threadlist_update_test_cmd
,
10488 _("Iterate through updating all remote thread info"));
10489 add_com ("talive", class_obscure
, threadalive_test
,
10490 _(" Remote thread alive test "));
10495 /* Convert a thread ID to a string. Returns the string in a static
10499 remote_pid_to_str (struct target_ops
*ops
, ptid_t ptid
)
10501 static char buf
[64];
10502 struct remote_state
*rs
= get_remote_state ();
10504 if (ptid_equal (ptid
, null_ptid
))
10505 return normal_pid_to_str (ptid
);
10506 else if (ptid_is_pid (ptid
))
10508 /* Printing an inferior target id. */
10510 /* When multi-process extensions are off, there's no way in the
10511 remote protocol to know the remote process id, if there's any
10512 at all. There's one exception --- when we're connected with
10513 target extended-remote, and we manually attached to a process
10514 with "attach PID". We don't record anywhere a flag that
10515 allows us to distinguish that case from the case of
10516 connecting with extended-remote and the stub already being
10517 attached to a process, and reporting yes to qAttached, hence
10518 no smart special casing here. */
10519 if (!remote_multi_process_p (rs
))
10521 xsnprintf (buf
, sizeof buf
, "Remote target");
10525 return normal_pid_to_str (ptid
);
10529 if (ptid_equal (magic_null_ptid
, ptid
))
10530 xsnprintf (buf
, sizeof buf
, "Thread <main>");
10531 else if (remote_multi_process_p (rs
))
10532 if (ptid_get_lwp (ptid
) == 0)
10533 return normal_pid_to_str (ptid
);
10535 xsnprintf (buf
, sizeof buf
, "Thread %d.%ld",
10536 ptid_get_pid (ptid
), ptid_get_lwp (ptid
));
10538 xsnprintf (buf
, sizeof buf
, "Thread %ld",
10539 ptid_get_lwp (ptid
));
10544 /* Get the address of the thread local variable in OBJFILE which is
10545 stored at OFFSET within the thread local storage for thread PTID. */
10548 remote_get_thread_local_address (struct target_ops
*ops
,
10549 ptid_t ptid
, CORE_ADDR lm
, CORE_ADDR offset
)
10551 if (packet_support (PACKET_qGetTLSAddr
) != PACKET_DISABLE
)
10553 struct remote_state
*rs
= get_remote_state ();
10555 char *endp
= rs
->buf
+ get_remote_packet_size ();
10556 enum packet_result result
;
10558 strcpy (p
, "qGetTLSAddr:");
10560 p
= write_ptid (p
, endp
, ptid
);
10562 p
+= hexnumstr (p
, offset
);
10564 p
+= hexnumstr (p
, lm
);
10568 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
10569 result
= packet_ok (rs
->buf
,
10570 &remote_protocol_packets
[PACKET_qGetTLSAddr
]);
10571 if (result
== PACKET_OK
)
10575 unpack_varlen_hex (rs
->buf
, &result
);
10578 else if (result
== PACKET_UNKNOWN
)
10579 throw_error (TLS_GENERIC_ERROR
,
10580 _("Remote target doesn't support qGetTLSAddr packet"));
10582 throw_error (TLS_GENERIC_ERROR
,
10583 _("Remote target failed to process qGetTLSAddr request"));
10586 throw_error (TLS_GENERIC_ERROR
,
10587 _("TLS not supported or disabled on this target"));
10592 /* Provide thread local base, i.e. Thread Information Block address.
10593 Returns 1 if ptid is found and thread_local_base is non zero. */
10596 remote_get_tib_address (struct target_ops
*self
, ptid_t ptid
, CORE_ADDR
*addr
)
10598 if (packet_support (PACKET_qGetTIBAddr
) != PACKET_DISABLE
)
10600 struct remote_state
*rs
= get_remote_state ();
10602 char *endp
= rs
->buf
+ get_remote_packet_size ();
10603 enum packet_result result
;
10605 strcpy (p
, "qGetTIBAddr:");
10607 p
= write_ptid (p
, endp
, ptid
);
10611 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
10612 result
= packet_ok (rs
->buf
,
10613 &remote_protocol_packets
[PACKET_qGetTIBAddr
]);
10614 if (result
== PACKET_OK
)
10618 unpack_varlen_hex (rs
->buf
, &result
);
10620 *addr
= (CORE_ADDR
) result
;
10623 else if (result
== PACKET_UNKNOWN
)
10624 error (_("Remote target doesn't support qGetTIBAddr packet"));
10626 error (_("Remote target failed to process qGetTIBAddr request"));
10629 error (_("qGetTIBAddr not supported or disabled on this target"));
10634 /* Support for inferring a target description based on the current
10635 architecture and the size of a 'g' packet. While the 'g' packet
10636 can have any size (since optional registers can be left off the
10637 end), some sizes are easily recognizable given knowledge of the
10638 approximate architecture. */
10640 struct remote_g_packet_guess
10643 const struct target_desc
*tdesc
;
10645 typedef struct remote_g_packet_guess remote_g_packet_guess_s
;
10646 DEF_VEC_O(remote_g_packet_guess_s
);
10648 struct remote_g_packet_data
10650 VEC(remote_g_packet_guess_s
) *guesses
;
10653 static struct gdbarch_data
*remote_g_packet_data_handle
;
10656 remote_g_packet_data_init (struct obstack
*obstack
)
10658 return OBSTACK_ZALLOC (obstack
, struct remote_g_packet_data
);
10662 register_remote_g_packet_guess (struct gdbarch
*gdbarch
, int bytes
,
10663 const struct target_desc
*tdesc
)
10665 struct remote_g_packet_data
*data
10666 = ((struct remote_g_packet_data
*)
10667 gdbarch_data (gdbarch
, remote_g_packet_data_handle
));
10668 struct remote_g_packet_guess new_guess
, *guess
;
10671 gdb_assert (tdesc
!= NULL
);
10674 VEC_iterate (remote_g_packet_guess_s
, data
->guesses
, ix
, guess
);
10676 if (guess
->bytes
== bytes
)
10677 internal_error (__FILE__
, __LINE__
,
10678 _("Duplicate g packet description added for size %d"),
10681 new_guess
.bytes
= bytes
;
10682 new_guess
.tdesc
= tdesc
;
10683 VEC_safe_push (remote_g_packet_guess_s
, data
->guesses
, &new_guess
);
10686 /* Return 1 if remote_read_description would do anything on this target
10687 and architecture, 0 otherwise. */
10690 remote_read_description_p (struct target_ops
*target
)
10692 struct remote_g_packet_data
*data
10693 = ((struct remote_g_packet_data
*)
10694 gdbarch_data (target_gdbarch (), remote_g_packet_data_handle
));
10696 if (!VEC_empty (remote_g_packet_guess_s
, data
->guesses
))
10702 static const struct target_desc
*
10703 remote_read_description (struct target_ops
*target
)
10705 struct remote_g_packet_data
*data
10706 = ((struct remote_g_packet_data
*)
10707 gdbarch_data (target_gdbarch (), remote_g_packet_data_handle
));
10709 /* Do not try this during initial connection, when we do not know
10710 whether there is a running but stopped thread. */
10711 if (!target_has_execution
|| ptid_equal (inferior_ptid
, null_ptid
))
10712 return target
->beneath
->to_read_description (target
->beneath
);
10714 if (!VEC_empty (remote_g_packet_guess_s
, data
->guesses
))
10716 struct remote_g_packet_guess
*guess
;
10718 int bytes
= send_g_packet ();
10721 VEC_iterate (remote_g_packet_guess_s
, data
->guesses
, ix
, guess
);
10723 if (guess
->bytes
== bytes
)
10724 return guess
->tdesc
;
10726 /* We discard the g packet. A minor optimization would be to
10727 hold on to it, and fill the register cache once we have selected
10728 an architecture, but it's too tricky to do safely. */
10731 return target
->beneath
->to_read_description (target
->beneath
);
10734 /* Remote file transfer support. This is host-initiated I/O, not
10735 target-initiated; for target-initiated, see remote-fileio.c. */
10737 /* If *LEFT is at least the length of STRING, copy STRING to
10738 *BUFFER, update *BUFFER to point to the new end of the buffer, and
10739 decrease *LEFT. Otherwise raise an error. */
10742 remote_buffer_add_string (char **buffer
, int *left
, char *string
)
10744 int len
= strlen (string
);
10747 error (_("Packet too long for target."));
10749 memcpy (*buffer
, string
, len
);
10753 /* NUL-terminate the buffer as a convenience, if there is
10759 /* If *LEFT is large enough, hex encode LEN bytes from BYTES into
10760 *BUFFER, update *BUFFER to point to the new end of the buffer, and
10761 decrease *LEFT. Otherwise raise an error. */
10764 remote_buffer_add_bytes (char **buffer
, int *left
, const gdb_byte
*bytes
,
10767 if (2 * len
> *left
)
10768 error (_("Packet too long for target."));
10770 bin2hex (bytes
, *buffer
, len
);
10771 *buffer
+= 2 * len
;
10774 /* NUL-terminate the buffer as a convenience, if there is
10780 /* If *LEFT is large enough, convert VALUE to hex and add it to
10781 *BUFFER, update *BUFFER to point to the new end of the buffer, and
10782 decrease *LEFT. Otherwise raise an error. */
10785 remote_buffer_add_int (char **buffer
, int *left
, ULONGEST value
)
10787 int len
= hexnumlen (value
);
10790 error (_("Packet too long for target."));
10792 hexnumstr (*buffer
, value
);
10796 /* NUL-terminate the buffer as a convenience, if there is
10802 /* Parse an I/O result packet from BUFFER. Set RETCODE to the return
10803 value, *REMOTE_ERRNO to the remote error number or zero if none
10804 was included, and *ATTACHMENT to point to the start of the annex
10805 if any. The length of the packet isn't needed here; there may
10806 be NUL bytes in BUFFER, but they will be after *ATTACHMENT.
10808 Return 0 if the packet could be parsed, -1 if it could not. If
10809 -1 is returned, the other variables may not be initialized. */
10812 remote_hostio_parse_result (char *buffer
, int *retcode
,
10813 int *remote_errno
, char **attachment
)
10818 *attachment
= NULL
;
10820 if (buffer
[0] != 'F')
10824 *retcode
= strtol (&buffer
[1], &p
, 16);
10825 if (errno
!= 0 || p
== &buffer
[1])
10828 /* Check for ",errno". */
10832 *remote_errno
= strtol (p
+ 1, &p2
, 16);
10833 if (errno
!= 0 || p
+ 1 == p2
)
10838 /* Check for ";attachment". If there is no attachment, the
10839 packet should end here. */
10842 *attachment
= p
+ 1;
10845 else if (*p
== '\0')
10851 /* Send a prepared I/O packet to the target and read its response.
10852 The prepared packet is in the global RS->BUF before this function
10853 is called, and the answer is there when we return.
10855 COMMAND_BYTES is the length of the request to send, which may include
10856 binary data. WHICH_PACKET is the packet configuration to check
10857 before attempting a packet. If an error occurs, *REMOTE_ERRNO
10858 is set to the error number and -1 is returned. Otherwise the value
10859 returned by the function is returned.
10861 ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an
10862 attachment is expected; an error will be reported if there's a
10863 mismatch. If one is found, *ATTACHMENT will be set to point into
10864 the packet buffer and *ATTACHMENT_LEN will be set to the
10865 attachment's length. */
10868 remote_hostio_send_command (int command_bytes
, int which_packet
,
10869 int *remote_errno
, char **attachment
,
10870 int *attachment_len
)
10872 struct remote_state
*rs
= get_remote_state ();
10873 int ret
, bytes_read
;
10874 char *attachment_tmp
;
10876 if (!rs
->remote_desc
10877 || packet_support (which_packet
) == PACKET_DISABLE
)
10879 *remote_errno
= FILEIO_ENOSYS
;
10883 putpkt_binary (rs
->buf
, command_bytes
);
10884 bytes_read
= getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0);
10886 /* If it timed out, something is wrong. Don't try to parse the
10888 if (bytes_read
< 0)
10890 *remote_errno
= FILEIO_EINVAL
;
10894 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[which_packet
]))
10897 *remote_errno
= FILEIO_EINVAL
;
10899 case PACKET_UNKNOWN
:
10900 *remote_errno
= FILEIO_ENOSYS
;
10906 if (remote_hostio_parse_result (rs
->buf
, &ret
, remote_errno
,
10909 *remote_errno
= FILEIO_EINVAL
;
10913 /* Make sure we saw an attachment if and only if we expected one. */
10914 if ((attachment_tmp
== NULL
&& attachment
!= NULL
)
10915 || (attachment_tmp
!= NULL
&& attachment
== NULL
))
10917 *remote_errno
= FILEIO_EINVAL
;
10921 /* If an attachment was found, it must point into the packet buffer;
10922 work out how many bytes there were. */
10923 if (attachment_tmp
!= NULL
)
10925 *attachment
= attachment_tmp
;
10926 *attachment_len
= bytes_read
- (*attachment
- rs
->buf
);
10932 /* Invalidate the readahead cache. */
10935 readahead_cache_invalidate (void)
10937 struct remote_state
*rs
= get_remote_state ();
10939 rs
->readahead_cache
.fd
= -1;
10942 /* Invalidate the readahead cache if it is holding data for FD. */
10945 readahead_cache_invalidate_fd (int fd
)
10947 struct remote_state
*rs
= get_remote_state ();
10949 if (rs
->readahead_cache
.fd
== fd
)
10950 rs
->readahead_cache
.fd
= -1;
10953 /* Set the filesystem remote_hostio functions that take FILENAME
10954 arguments will use. Return 0 on success, or -1 if an error
10955 occurs (and set *REMOTE_ERRNO). */
10958 remote_hostio_set_filesystem (struct inferior
*inf
, int *remote_errno
)
10960 struct remote_state
*rs
= get_remote_state ();
10961 int required_pid
= (inf
== NULL
|| inf
->fake_pid_p
) ? 0 : inf
->pid
;
10963 int left
= get_remote_packet_size () - 1;
10967 if (packet_support (PACKET_vFile_setfs
) == PACKET_DISABLE
)
10970 if (rs
->fs_pid
!= -1 && required_pid
== rs
->fs_pid
)
10973 remote_buffer_add_string (&p
, &left
, "vFile:setfs:");
10975 xsnprintf (arg
, sizeof (arg
), "%x", required_pid
);
10976 remote_buffer_add_string (&p
, &left
, arg
);
10978 ret
= remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_setfs
,
10979 remote_errno
, NULL
, NULL
);
10981 if (packet_support (PACKET_vFile_setfs
) == PACKET_DISABLE
)
10985 rs
->fs_pid
= required_pid
;
10990 /* Implementation of to_fileio_open. */
10993 remote_hostio_open (struct target_ops
*self
,
10994 struct inferior
*inf
, const char *filename
,
10995 int flags
, int mode
, int warn_if_slow
,
10998 struct remote_state
*rs
= get_remote_state ();
11000 int left
= get_remote_packet_size () - 1;
11004 static int warning_issued
= 0;
11006 printf_unfiltered (_("Reading %s from remote target...\n"),
11009 if (!warning_issued
)
11011 warning (_("File transfers from remote targets can be slow."
11012 " Use \"set sysroot\" to access files locally"
11014 warning_issued
= 1;
11018 if (remote_hostio_set_filesystem (inf
, remote_errno
) != 0)
11021 remote_buffer_add_string (&p
, &left
, "vFile:open:");
11023 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
11024 strlen (filename
));
11025 remote_buffer_add_string (&p
, &left
, ",");
11027 remote_buffer_add_int (&p
, &left
, flags
);
11028 remote_buffer_add_string (&p
, &left
, ",");
11030 remote_buffer_add_int (&p
, &left
, mode
);
11032 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_open
,
11033 remote_errno
, NULL
, NULL
);
11036 /* Implementation of to_fileio_pwrite. */
11039 remote_hostio_pwrite (struct target_ops
*self
,
11040 int fd
, const gdb_byte
*write_buf
, int len
,
11041 ULONGEST offset
, int *remote_errno
)
11043 struct remote_state
*rs
= get_remote_state ();
11045 int left
= get_remote_packet_size ();
11048 readahead_cache_invalidate_fd (fd
);
11050 remote_buffer_add_string (&p
, &left
, "vFile:pwrite:");
11052 remote_buffer_add_int (&p
, &left
, fd
);
11053 remote_buffer_add_string (&p
, &left
, ",");
11055 remote_buffer_add_int (&p
, &left
, offset
);
11056 remote_buffer_add_string (&p
, &left
, ",");
11058 p
+= remote_escape_output (write_buf
, len
, 1, (gdb_byte
*) p
, &out_len
,
11059 get_remote_packet_size () - (p
- rs
->buf
));
11061 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_pwrite
,
11062 remote_errno
, NULL
, NULL
);
11065 /* Helper for the implementation of to_fileio_pread. Read the file
11066 from the remote side with vFile:pread. */
11069 remote_hostio_pread_vFile (struct target_ops
*self
,
11070 int fd
, gdb_byte
*read_buf
, int len
,
11071 ULONGEST offset
, int *remote_errno
)
11073 struct remote_state
*rs
= get_remote_state ();
11076 int left
= get_remote_packet_size ();
11077 int ret
, attachment_len
;
11080 remote_buffer_add_string (&p
, &left
, "vFile:pread:");
11082 remote_buffer_add_int (&p
, &left
, fd
);
11083 remote_buffer_add_string (&p
, &left
, ",");
11085 remote_buffer_add_int (&p
, &left
, len
);
11086 remote_buffer_add_string (&p
, &left
, ",");
11088 remote_buffer_add_int (&p
, &left
, offset
);
11090 ret
= remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_pread
,
11091 remote_errno
, &attachment
,
11097 read_len
= remote_unescape_input ((gdb_byte
*) attachment
, attachment_len
,
11099 if (read_len
!= ret
)
11100 error (_("Read returned %d, but %d bytes."), ret
, (int) read_len
);
11105 /* Serve pread from the readahead cache. Returns number of bytes
11106 read, or 0 if the request can't be served from the cache. */
11109 remote_hostio_pread_from_cache (struct remote_state
*rs
,
11110 int fd
, gdb_byte
*read_buf
, size_t len
,
11113 struct readahead_cache
*cache
= &rs
->readahead_cache
;
11115 if (cache
->fd
== fd
11116 && cache
->offset
<= offset
11117 && offset
< cache
->offset
+ cache
->bufsize
)
11119 ULONGEST max
= cache
->offset
+ cache
->bufsize
;
11121 if (offset
+ len
> max
)
11122 len
= max
- offset
;
11124 memcpy (read_buf
, cache
->buf
+ offset
- cache
->offset
, len
);
11131 /* Implementation of to_fileio_pread. */
11134 remote_hostio_pread (struct target_ops
*self
,
11135 int fd
, gdb_byte
*read_buf
, int len
,
11136 ULONGEST offset
, int *remote_errno
)
11139 struct remote_state
*rs
= get_remote_state ();
11140 struct readahead_cache
*cache
= &rs
->readahead_cache
;
11142 ret
= remote_hostio_pread_from_cache (rs
, fd
, read_buf
, len
, offset
);
11145 cache
->hit_count
++;
11148 fprintf_unfiltered (gdb_stdlog
, "readahead cache hit %s\n",
11149 pulongest (cache
->hit_count
));
11153 cache
->miss_count
++;
11155 fprintf_unfiltered (gdb_stdlog
, "readahead cache miss %s\n",
11156 pulongest (cache
->miss_count
));
11159 cache
->offset
= offset
;
11160 cache
->bufsize
= get_remote_packet_size ();
11161 cache
->buf
= (gdb_byte
*) xrealloc (cache
->buf
, cache
->bufsize
);
11163 ret
= remote_hostio_pread_vFile (self
, cache
->fd
, cache
->buf
, cache
->bufsize
,
11164 cache
->offset
, remote_errno
);
11167 readahead_cache_invalidate_fd (fd
);
11171 cache
->bufsize
= ret
;
11172 return remote_hostio_pread_from_cache (rs
, fd
, read_buf
, len
, offset
);
11175 /* Implementation of to_fileio_close. */
11178 remote_hostio_close (struct target_ops
*self
, int fd
, int *remote_errno
)
11180 struct remote_state
*rs
= get_remote_state ();
11182 int left
= get_remote_packet_size () - 1;
11184 readahead_cache_invalidate_fd (fd
);
11186 remote_buffer_add_string (&p
, &left
, "vFile:close:");
11188 remote_buffer_add_int (&p
, &left
, fd
);
11190 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_close
,
11191 remote_errno
, NULL
, NULL
);
11194 /* Implementation of to_fileio_unlink. */
11197 remote_hostio_unlink (struct target_ops
*self
,
11198 struct inferior
*inf
, const char *filename
,
11201 struct remote_state
*rs
= get_remote_state ();
11203 int left
= get_remote_packet_size () - 1;
11205 if (remote_hostio_set_filesystem (inf
, remote_errno
) != 0)
11208 remote_buffer_add_string (&p
, &left
, "vFile:unlink:");
11210 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
11211 strlen (filename
));
11213 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_unlink
,
11214 remote_errno
, NULL
, NULL
);
11217 /* Implementation of to_fileio_readlink. */
11220 remote_hostio_readlink (struct target_ops
*self
,
11221 struct inferior
*inf
, const char *filename
,
11224 struct remote_state
*rs
= get_remote_state ();
11227 int left
= get_remote_packet_size ();
11228 int len
, attachment_len
;
11232 if (remote_hostio_set_filesystem (inf
, remote_errno
) != 0)
11235 remote_buffer_add_string (&p
, &left
, "vFile:readlink:");
11237 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
11238 strlen (filename
));
11240 len
= remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_readlink
,
11241 remote_errno
, &attachment
,
11247 ret
= (char *) xmalloc (len
+ 1);
11249 read_len
= remote_unescape_input ((gdb_byte
*) attachment
, attachment_len
,
11250 (gdb_byte
*) ret
, len
);
11251 if (read_len
!= len
)
11252 error (_("Readlink returned %d, but %d bytes."), len
, read_len
);
11258 /* Implementation of to_fileio_fstat. */
11261 remote_hostio_fstat (struct target_ops
*self
,
11262 int fd
, struct stat
*st
,
11265 struct remote_state
*rs
= get_remote_state ();
11267 int left
= get_remote_packet_size ();
11268 int attachment_len
, ret
;
11270 struct fio_stat fst
;
11273 remote_buffer_add_string (&p
, &left
, "vFile:fstat:");
11275 remote_buffer_add_int (&p
, &left
, fd
);
11277 ret
= remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_fstat
,
11278 remote_errno
, &attachment
,
11282 if (*remote_errno
!= FILEIO_ENOSYS
)
11285 /* Strictly we should return -1, ENOSYS here, but when
11286 "set sysroot remote:" was implemented in August 2008
11287 BFD's need for a stat function was sidestepped with
11288 this hack. This was not remedied until March 2015
11289 so we retain the previous behavior to avoid breaking
11292 Note that the memset is a March 2015 addition; older
11293 GDBs set st_size *and nothing else* so the structure
11294 would have garbage in all other fields. This might
11295 break something but retaining the previous behavior
11296 here would be just too wrong. */
11298 memset (st
, 0, sizeof (struct stat
));
11299 st
->st_size
= INT_MAX
;
11303 read_len
= remote_unescape_input ((gdb_byte
*) attachment
, attachment_len
,
11304 (gdb_byte
*) &fst
, sizeof (fst
));
11306 if (read_len
!= ret
)
11307 error (_("vFile:fstat returned %d, but %d bytes."), ret
, read_len
);
11309 if (read_len
!= sizeof (fst
))
11310 error (_("vFile:fstat returned %d bytes, but expecting %d."),
11311 read_len
, (int) sizeof (fst
));
11313 remote_fileio_to_host_stat (&fst
, st
);
11318 /* Implementation of to_filesystem_is_local. */
11321 remote_filesystem_is_local (struct target_ops
*self
)
11323 /* Valgrind GDB presents itself as a remote target but works
11324 on the local filesystem: it does not implement remote get
11325 and users are not expected to set a sysroot. To handle
11326 this case we treat the remote filesystem as local if the
11327 sysroot is exactly TARGET_SYSROOT_PREFIX and if the stub
11328 does not support vFile:open. */
11329 if (strcmp (gdb_sysroot
, TARGET_SYSROOT_PREFIX
) == 0)
11331 enum packet_support ps
= packet_support (PACKET_vFile_open
);
11333 if (ps
== PACKET_SUPPORT_UNKNOWN
)
11335 int fd
, remote_errno
;
11337 /* Try opening a file to probe support. The supplied
11338 filename is irrelevant, we only care about whether
11339 the stub recognizes the packet or not. */
11340 fd
= remote_hostio_open (self
, NULL
, "just probing",
11341 FILEIO_O_RDONLY
, 0700, 0,
11345 remote_hostio_close (self
, fd
, &remote_errno
);
11347 ps
= packet_support (PACKET_vFile_open
);
11350 if (ps
== PACKET_DISABLE
)
11352 static int warning_issued
= 0;
11354 if (!warning_issued
)
11356 warning (_("remote target does not support file"
11357 " transfer, attempting to access files"
11358 " from local filesystem."));
11359 warning_issued
= 1;
11370 remote_fileio_errno_to_host (int errnum
)
11376 case FILEIO_ENOENT
:
11384 case FILEIO_EACCES
:
11386 case FILEIO_EFAULT
:
11390 case FILEIO_EEXIST
:
11392 case FILEIO_ENODEV
:
11394 case FILEIO_ENOTDIR
:
11396 case FILEIO_EISDIR
:
11398 case FILEIO_EINVAL
:
11400 case FILEIO_ENFILE
:
11402 case FILEIO_EMFILE
:
11406 case FILEIO_ENOSPC
:
11408 case FILEIO_ESPIPE
:
11412 case FILEIO_ENOSYS
:
11414 case FILEIO_ENAMETOOLONG
:
11415 return ENAMETOOLONG
;
11421 remote_hostio_error (int errnum
)
11423 int host_error
= remote_fileio_errno_to_host (errnum
);
11425 if (host_error
== -1)
11426 error (_("Unknown remote I/O error %d"), errnum
);
11428 error (_("Remote I/O error: %s"), safe_strerror (host_error
));
11432 remote_hostio_close_cleanup (void *opaque
)
11434 int fd
= *(int *) opaque
;
11437 remote_hostio_close (find_target_at (process_stratum
), fd
, &remote_errno
);
11441 remote_file_put (const char *local_file
, const char *remote_file
, int from_tty
)
11443 struct cleanup
*back_to
, *close_cleanup
;
11444 int retcode
, fd
, remote_errno
, bytes
, io_size
;
11447 int bytes_in_buffer
;
11450 struct remote_state
*rs
= get_remote_state ();
11452 if (!rs
->remote_desc
)
11453 error (_("command can only be used with remote target"));
11455 file
= gdb_fopen_cloexec (local_file
, "rb");
11457 perror_with_name (local_file
);
11458 back_to
= make_cleanup_fclose (file
);
11460 fd
= remote_hostio_open (find_target_at (process_stratum
), NULL
,
11461 remote_file
, (FILEIO_O_WRONLY
| FILEIO_O_CREAT
11463 0700, 0, &remote_errno
);
11465 remote_hostio_error (remote_errno
);
11467 /* Send up to this many bytes at once. They won't all fit in the
11468 remote packet limit, so we'll transfer slightly fewer. */
11469 io_size
= get_remote_packet_size ();
11470 buffer
= (gdb_byte
*) xmalloc (io_size
);
11471 make_cleanup (xfree
, buffer
);
11473 close_cleanup
= make_cleanup (remote_hostio_close_cleanup
, &fd
);
11475 bytes_in_buffer
= 0;
11478 while (bytes_in_buffer
|| !saw_eof
)
11482 bytes
= fread (buffer
+ bytes_in_buffer
, 1,
11483 io_size
- bytes_in_buffer
,
11488 error (_("Error reading %s."), local_file
);
11491 /* EOF. Unless there is something still in the
11492 buffer from the last iteration, we are done. */
11494 if (bytes_in_buffer
== 0)
11502 bytes
+= bytes_in_buffer
;
11503 bytes_in_buffer
= 0;
11505 retcode
= remote_hostio_pwrite (find_target_at (process_stratum
),
11507 offset
, &remote_errno
);
11510 remote_hostio_error (remote_errno
);
11511 else if (retcode
== 0)
11512 error (_("Remote write of %d bytes returned 0!"), bytes
);
11513 else if (retcode
< bytes
)
11515 /* Short write. Save the rest of the read data for the next
11517 bytes_in_buffer
= bytes
- retcode
;
11518 memmove (buffer
, buffer
+ retcode
, bytes_in_buffer
);
11524 discard_cleanups (close_cleanup
);
11525 if (remote_hostio_close (find_target_at (process_stratum
), fd
, &remote_errno
))
11526 remote_hostio_error (remote_errno
);
11529 printf_filtered (_("Successfully sent file \"%s\".\n"), local_file
);
11530 do_cleanups (back_to
);
11534 remote_file_get (const char *remote_file
, const char *local_file
, int from_tty
)
11536 struct cleanup
*back_to
, *close_cleanup
;
11537 int fd
, remote_errno
, bytes
, io_size
;
11541 struct remote_state
*rs
= get_remote_state ();
11543 if (!rs
->remote_desc
)
11544 error (_("command can only be used with remote target"));
11546 fd
= remote_hostio_open (find_target_at (process_stratum
), NULL
,
11547 remote_file
, FILEIO_O_RDONLY
, 0, 0,
11550 remote_hostio_error (remote_errno
);
11552 file
= gdb_fopen_cloexec (local_file
, "wb");
11554 perror_with_name (local_file
);
11555 back_to
= make_cleanup_fclose (file
);
11557 /* Send up to this many bytes at once. They won't all fit in the
11558 remote packet limit, so we'll transfer slightly fewer. */
11559 io_size
= get_remote_packet_size ();
11560 buffer
= (gdb_byte
*) xmalloc (io_size
);
11561 make_cleanup (xfree
, buffer
);
11563 close_cleanup
= make_cleanup (remote_hostio_close_cleanup
, &fd
);
11568 bytes
= remote_hostio_pread (find_target_at (process_stratum
),
11569 fd
, buffer
, io_size
, offset
, &remote_errno
);
11571 /* Success, but no bytes, means end-of-file. */
11574 remote_hostio_error (remote_errno
);
11578 bytes
= fwrite (buffer
, 1, bytes
, file
);
11580 perror_with_name (local_file
);
11583 discard_cleanups (close_cleanup
);
11584 if (remote_hostio_close (find_target_at (process_stratum
), fd
, &remote_errno
))
11585 remote_hostio_error (remote_errno
);
11588 printf_filtered (_("Successfully fetched file \"%s\".\n"), remote_file
);
11589 do_cleanups (back_to
);
11593 remote_file_delete (const char *remote_file
, int from_tty
)
11595 int retcode
, remote_errno
;
11596 struct remote_state
*rs
= get_remote_state ();
11598 if (!rs
->remote_desc
)
11599 error (_("command can only be used with remote target"));
11601 retcode
= remote_hostio_unlink (find_target_at (process_stratum
),
11602 NULL
, remote_file
, &remote_errno
);
11604 remote_hostio_error (remote_errno
);
11607 printf_filtered (_("Successfully deleted file \"%s\".\n"), remote_file
);
11611 remote_put_command (char *args
, int from_tty
)
11613 struct cleanup
*back_to
;
11617 error_no_arg (_("file to put"));
11619 argv
= gdb_buildargv (args
);
11620 back_to
= make_cleanup_freeargv (argv
);
11621 if (argv
[0] == NULL
|| argv
[1] == NULL
|| argv
[2] != NULL
)
11622 error (_("Invalid parameters to remote put"));
11624 remote_file_put (argv
[0], argv
[1], from_tty
);
11626 do_cleanups (back_to
);
11630 remote_get_command (char *args
, int from_tty
)
11632 struct cleanup
*back_to
;
11636 error_no_arg (_("file to get"));
11638 argv
= gdb_buildargv (args
);
11639 back_to
= make_cleanup_freeargv (argv
);
11640 if (argv
[0] == NULL
|| argv
[1] == NULL
|| argv
[2] != NULL
)
11641 error (_("Invalid parameters to remote get"));
11643 remote_file_get (argv
[0], argv
[1], from_tty
);
11645 do_cleanups (back_to
);
11649 remote_delete_command (char *args
, int from_tty
)
11651 struct cleanup
*back_to
;
11655 error_no_arg (_("file to delete"));
11657 argv
= gdb_buildargv (args
);
11658 back_to
= make_cleanup_freeargv (argv
);
11659 if (argv
[0] == NULL
|| argv
[1] != NULL
)
11660 error (_("Invalid parameters to remote delete"));
11662 remote_file_delete (argv
[0], from_tty
);
11664 do_cleanups (back_to
);
11668 remote_command (char *args
, int from_tty
)
11670 help_list (remote_cmdlist
, "remote ", all_commands
, gdb_stdout
);
11674 remote_can_execute_reverse (struct target_ops
*self
)
11676 if (packet_support (PACKET_bs
) == PACKET_ENABLE
11677 || packet_support (PACKET_bc
) == PACKET_ENABLE
)
11684 remote_supports_non_stop (struct target_ops
*self
)
11690 remote_supports_disable_randomization (struct target_ops
*self
)
11692 /* Only supported in extended mode. */
11697 remote_supports_multi_process (struct target_ops
*self
)
11699 struct remote_state
*rs
= get_remote_state ();
11701 return remote_multi_process_p (rs
);
11705 remote_supports_cond_tracepoints (void)
11707 return packet_support (PACKET_ConditionalTracepoints
) == PACKET_ENABLE
;
11711 remote_supports_cond_breakpoints (struct target_ops
*self
)
11713 return packet_support (PACKET_ConditionalBreakpoints
) == PACKET_ENABLE
;
11717 remote_supports_fast_tracepoints (void)
11719 return packet_support (PACKET_FastTracepoints
) == PACKET_ENABLE
;
11723 remote_supports_static_tracepoints (void)
11725 return packet_support (PACKET_StaticTracepoints
) == PACKET_ENABLE
;
11729 remote_supports_install_in_trace (void)
11731 return packet_support (PACKET_InstallInTrace
) == PACKET_ENABLE
;
11735 remote_supports_enable_disable_tracepoint (struct target_ops
*self
)
11737 return (packet_support (PACKET_EnableDisableTracepoints_feature
)
11742 remote_supports_string_tracing (struct target_ops
*self
)
11744 return packet_support (PACKET_tracenz_feature
) == PACKET_ENABLE
;
11748 remote_can_run_breakpoint_commands (struct target_ops
*self
)
11750 return packet_support (PACKET_BreakpointCommands
) == PACKET_ENABLE
;
11754 remote_trace_init (struct target_ops
*self
)
11757 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11758 if (strcmp (target_buf
, "OK") != 0)
11759 error (_("Target does not support this command."));
11762 static void free_actions_list (char **actions_list
);
11763 static void free_actions_list_cleanup_wrapper (void *);
11765 free_actions_list_cleanup_wrapper (void *al
)
11767 free_actions_list ((char **) al
);
11771 free_actions_list (char **actions_list
)
11775 if (actions_list
== 0)
11778 for (ndx
= 0; actions_list
[ndx
]; ndx
++)
11779 xfree (actions_list
[ndx
]);
11781 xfree (actions_list
);
11784 /* Recursive routine to walk through command list including loops, and
11785 download packets for each command. */
11788 remote_download_command_source (int num
, ULONGEST addr
,
11789 struct command_line
*cmds
)
11791 struct remote_state
*rs
= get_remote_state ();
11792 struct command_line
*cmd
;
11794 for (cmd
= cmds
; cmd
; cmd
= cmd
->next
)
11796 QUIT
; /* Allow user to bail out with ^C. */
11797 strcpy (rs
->buf
, "QTDPsrc:");
11798 encode_source_string (num
, addr
, "cmd", cmd
->line
,
11799 rs
->buf
+ strlen (rs
->buf
),
11800 rs
->buf_size
- strlen (rs
->buf
));
11802 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11803 if (strcmp (target_buf
, "OK"))
11804 warning (_("Target does not support source download."));
11806 if (cmd
->control_type
== while_control
11807 || cmd
->control_type
== while_stepping_control
)
11809 remote_download_command_source (num
, addr
, *cmd
->body_list
);
11811 QUIT
; /* Allow user to bail out with ^C. */
11812 strcpy (rs
->buf
, "QTDPsrc:");
11813 encode_source_string (num
, addr
, "cmd", "end",
11814 rs
->buf
+ strlen (rs
->buf
),
11815 rs
->buf_size
- strlen (rs
->buf
));
11817 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11818 if (strcmp (target_buf
, "OK"))
11819 warning (_("Target does not support source download."));
11825 remote_download_tracepoint (struct target_ops
*self
, struct bp_location
*loc
)
11827 #define BUF_SIZE 2048
11831 char buf
[BUF_SIZE
];
11832 char **tdp_actions
;
11833 char **stepping_actions
;
11835 struct cleanup
*old_chain
= NULL
;
11836 struct agent_expr
*aexpr
;
11837 struct cleanup
*aexpr_chain
= NULL
;
11839 struct breakpoint
*b
= loc
->owner
;
11840 struct tracepoint
*t
= (struct tracepoint
*) b
;
11842 encode_actions_rsp (loc
, &tdp_actions
, &stepping_actions
);
11843 old_chain
= make_cleanup (free_actions_list_cleanup_wrapper
,
11845 (void) make_cleanup (free_actions_list_cleanup_wrapper
,
11848 tpaddr
= loc
->address
;
11849 sprintf_vma (addrbuf
, tpaddr
);
11850 xsnprintf (buf
, BUF_SIZE
, "QTDP:%x:%s:%c:%lx:%x", b
->number
,
11851 addrbuf
, /* address */
11852 (b
->enable_state
== bp_enabled
? 'E' : 'D'),
11853 t
->step_count
, t
->pass_count
);
11854 /* Fast tracepoints are mostly handled by the target, but we can
11855 tell the target how big of an instruction block should be moved
11857 if (b
->type
== bp_fast_tracepoint
)
11859 /* Only test for support at download time; we may not know
11860 target capabilities at definition time. */
11861 if (remote_supports_fast_tracepoints ())
11863 if (gdbarch_fast_tracepoint_valid_at (loc
->gdbarch
, tpaddr
,
11865 xsnprintf (buf
+ strlen (buf
), BUF_SIZE
- strlen (buf
), ":F%x",
11866 gdb_insn_length (loc
->gdbarch
, tpaddr
));
11868 /* If it passed validation at definition but fails now,
11869 something is very wrong. */
11870 internal_error (__FILE__
, __LINE__
,
11871 _("Fast tracepoint not "
11872 "valid during download"));
11875 /* Fast tracepoints are functionally identical to regular
11876 tracepoints, so don't take lack of support as a reason to
11877 give up on the trace run. */
11878 warning (_("Target does not support fast tracepoints, "
11879 "downloading %d as regular tracepoint"), b
->number
);
11881 else if (b
->type
== bp_static_tracepoint
)
11883 /* Only test for support at download time; we may not know
11884 target capabilities at definition time. */
11885 if (remote_supports_static_tracepoints ())
11887 struct static_tracepoint_marker marker
;
11889 if (target_static_tracepoint_marker_at (tpaddr
, &marker
))
11890 strcat (buf
, ":S");
11892 error (_("Static tracepoint not valid during download"));
11895 /* Fast tracepoints are functionally identical to regular
11896 tracepoints, so don't take lack of support as a reason
11897 to give up on the trace run. */
11898 error (_("Target does not support static tracepoints"));
11900 /* If the tracepoint has a conditional, make it into an agent
11901 expression and append to the definition. */
11904 /* Only test support at download time, we may not know target
11905 capabilities at definition time. */
11906 if (remote_supports_cond_tracepoints ())
11908 aexpr
= gen_eval_for_expr (tpaddr
, loc
->cond
);
11909 aexpr_chain
= make_cleanup_free_agent_expr (aexpr
);
11910 xsnprintf (buf
+ strlen (buf
), BUF_SIZE
- strlen (buf
), ":X%x,",
11912 pkt
= buf
+ strlen (buf
);
11913 for (ndx
= 0; ndx
< aexpr
->len
; ++ndx
)
11914 pkt
= pack_hex_byte (pkt
, aexpr
->buf
[ndx
]);
11916 do_cleanups (aexpr_chain
);
11919 warning (_("Target does not support conditional tracepoints, "
11920 "ignoring tp %d cond"), b
->number
);
11923 if (b
->commands
|| *default_collect
)
11926 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11927 if (strcmp (target_buf
, "OK"))
11928 error (_("Target does not support tracepoints."));
11930 /* do_single_steps (t); */
11933 for (ndx
= 0; tdp_actions
[ndx
]; ndx
++)
11935 QUIT
; /* Allow user to bail out with ^C. */
11936 xsnprintf (buf
, BUF_SIZE
, "QTDP:-%x:%s:%s%c",
11937 b
->number
, addrbuf
, /* address */
11939 ((tdp_actions
[ndx
+ 1] || stepping_actions
)
11942 remote_get_noisy_reply (&target_buf
,
11944 if (strcmp (target_buf
, "OK"))
11945 error (_("Error on target while setting tracepoints."));
11948 if (stepping_actions
)
11950 for (ndx
= 0; stepping_actions
[ndx
]; ndx
++)
11952 QUIT
; /* Allow user to bail out with ^C. */
11953 xsnprintf (buf
, BUF_SIZE
, "QTDP:-%x:%s:%s%s%s",
11954 b
->number
, addrbuf
, /* address */
11955 ((ndx
== 0) ? "S" : ""),
11956 stepping_actions
[ndx
],
11957 (stepping_actions
[ndx
+ 1] ? "-" : ""));
11959 remote_get_noisy_reply (&target_buf
,
11961 if (strcmp (target_buf
, "OK"))
11962 error (_("Error on target while setting tracepoints."));
11966 if (packet_support (PACKET_TracepointSource
) == PACKET_ENABLE
)
11968 if (b
->location
!= NULL
)
11970 strcpy (buf
, "QTDPsrc:");
11971 encode_source_string (b
->number
, loc
->address
, "at",
11972 event_location_to_string (b
->location
),
11973 buf
+ strlen (buf
), 2048 - strlen (buf
));
11975 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11976 if (strcmp (target_buf
, "OK"))
11977 warning (_("Target does not support source download."));
11979 if (b
->cond_string
)
11981 strcpy (buf
, "QTDPsrc:");
11982 encode_source_string (b
->number
, loc
->address
,
11983 "cond", b
->cond_string
, buf
+ strlen (buf
),
11984 2048 - strlen (buf
));
11986 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11987 if (strcmp (target_buf
, "OK"))
11988 warning (_("Target does not support source download."));
11990 remote_download_command_source (b
->number
, loc
->address
,
11991 breakpoint_commands (b
));
11994 do_cleanups (old_chain
);
11998 remote_can_download_tracepoint (struct target_ops
*self
)
12000 struct remote_state
*rs
= get_remote_state ();
12001 struct trace_status
*ts
;
12004 /* Don't try to install tracepoints until we've relocated our
12005 symbols, and fetched and merged the target's tracepoint list with
12007 if (rs
->starting_up
)
12010 ts
= current_trace_status ();
12011 status
= remote_get_trace_status (self
, ts
);
12013 if (status
== -1 || !ts
->running_known
|| !ts
->running
)
12016 /* If we are in a tracing experiment, but remote stub doesn't support
12017 installing tracepoint in trace, we have to return. */
12018 if (!remote_supports_install_in_trace ())
12026 remote_download_trace_state_variable (struct target_ops
*self
,
12027 struct trace_state_variable
*tsv
)
12029 struct remote_state
*rs
= get_remote_state ();
12032 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTDV:%x:%s:%x:",
12033 tsv
->number
, phex ((ULONGEST
) tsv
->initial_value
, 8),
12035 p
= rs
->buf
+ strlen (rs
->buf
);
12036 if ((p
- rs
->buf
) + strlen (tsv
->name
) * 2 >= get_remote_packet_size ())
12037 error (_("Trace state variable name too long for tsv definition packet"));
12038 p
+= 2 * bin2hex ((gdb_byte
*) (tsv
->name
), p
, strlen (tsv
->name
));
12041 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
12042 if (*target_buf
== '\0')
12043 error (_("Target does not support this command."));
12044 if (strcmp (target_buf
, "OK") != 0)
12045 error (_("Error on target while downloading trace state variable."));
12049 remote_enable_tracepoint (struct target_ops
*self
,
12050 struct bp_location
*location
)
12052 struct remote_state
*rs
= get_remote_state ();
12055 sprintf_vma (addr_buf
, location
->address
);
12056 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTEnable:%x:%s",
12057 location
->owner
->number
, addr_buf
);
12059 remote_get_noisy_reply (&rs
->buf
, &rs
->buf_size
);
12060 if (*rs
->buf
== '\0')
12061 error (_("Target does not support enabling tracepoints while a trace run is ongoing."));
12062 if (strcmp (rs
->buf
, "OK") != 0)
12063 error (_("Error on target while enabling tracepoint."));
12067 remote_disable_tracepoint (struct target_ops
*self
,
12068 struct bp_location
*location
)
12070 struct remote_state
*rs
= get_remote_state ();
12073 sprintf_vma (addr_buf
, location
->address
);
12074 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTDisable:%x:%s",
12075 location
->owner
->number
, addr_buf
);
12077 remote_get_noisy_reply (&rs
->buf
, &rs
->buf_size
);
12078 if (*rs
->buf
== '\0')
12079 error (_("Target does not support disabling tracepoints while a trace run is ongoing."));
12080 if (strcmp (rs
->buf
, "OK") != 0)
12081 error (_("Error on target while disabling tracepoint."));
12085 remote_trace_set_readonly_regions (struct target_ops
*self
)
12089 bfd_size_type size
;
12095 return; /* No information to give. */
12097 strcpy (target_buf
, "QTro");
12098 offset
= strlen (target_buf
);
12099 for (s
= exec_bfd
->sections
; s
; s
= s
->next
)
12101 char tmp1
[40], tmp2
[40];
12104 if ((s
->flags
& SEC_LOAD
) == 0 ||
12105 /* (s->flags & SEC_CODE) == 0 || */
12106 (s
->flags
& SEC_READONLY
) == 0)
12110 vma
= bfd_get_section_vma (abfd
, s
);
12111 size
= bfd_get_section_size (s
);
12112 sprintf_vma (tmp1
, vma
);
12113 sprintf_vma (tmp2
, vma
+ size
);
12114 sec_length
= 1 + strlen (tmp1
) + 1 + strlen (tmp2
);
12115 if (offset
+ sec_length
+ 1 > target_buf_size
)
12117 if (packet_support (PACKET_qXfer_traceframe_info
) != PACKET_ENABLE
)
12119 Too many sections for read-only sections definition packet."));
12122 xsnprintf (target_buf
+ offset
, target_buf_size
- offset
, ":%s,%s",
12124 offset
+= sec_length
;
12128 putpkt (target_buf
);
12129 getpkt (&target_buf
, &target_buf_size
, 0);
12134 remote_trace_start (struct target_ops
*self
)
12136 putpkt ("QTStart");
12137 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
12138 if (*target_buf
== '\0')
12139 error (_("Target does not support this command."));
12140 if (strcmp (target_buf
, "OK") != 0)
12141 error (_("Bogus reply from target: %s"), target_buf
);
12145 remote_get_trace_status (struct target_ops
*self
, struct trace_status
*ts
)
12147 /* Initialize it just to avoid a GCC false warning. */
12149 /* FIXME we need to get register block size some other way. */
12150 extern int trace_regblock_size
;
12151 enum packet_result result
;
12153 if (packet_support (PACKET_qTStatus
) == PACKET_DISABLE
)
12156 trace_regblock_size
= get_remote_arch_state ()->sizeof_g_packet
;
12158 putpkt ("qTStatus");
12162 p
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
12164 CATCH (ex
, RETURN_MASK_ERROR
)
12166 if (ex
.error
!= TARGET_CLOSE_ERROR
)
12168 exception_fprintf (gdb_stderr
, ex
, "qTStatus: ");
12171 throw_exception (ex
);
12175 result
= packet_ok (p
, &remote_protocol_packets
[PACKET_qTStatus
]);
12177 /* If the remote target doesn't do tracing, flag it. */
12178 if (result
== PACKET_UNKNOWN
)
12181 /* We're working with a live target. */
12182 ts
->filename
= NULL
;
12185 error (_("Bogus trace status reply from target: %s"), target_buf
);
12187 /* Function 'parse_trace_status' sets default value of each field of
12188 'ts' at first, so we don't have to do it here. */
12189 parse_trace_status (p
, ts
);
12191 return ts
->running
;
12195 remote_get_tracepoint_status (struct target_ops
*self
, struct breakpoint
*bp
,
12196 struct uploaded_tp
*utp
)
12198 struct remote_state
*rs
= get_remote_state ();
12200 struct bp_location
*loc
;
12201 struct tracepoint
*tp
= (struct tracepoint
*) bp
;
12202 size_t size
= get_remote_packet_size ();
12206 tp
->base
.hit_count
= 0;
12207 tp
->traceframe_usage
= 0;
12208 for (loc
= tp
->base
.loc
; loc
; loc
= loc
->next
)
12210 /* If the tracepoint was never downloaded, don't go asking for
12212 if (tp
->number_on_target
== 0)
12214 xsnprintf (rs
->buf
, size
, "qTP:%x:%s", tp
->number_on_target
,
12215 phex_nz (loc
->address
, 0));
12217 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
12218 if (reply
&& *reply
)
12221 parse_tracepoint_status (reply
+ 1, bp
, utp
);
12227 utp
->hit_count
= 0;
12228 utp
->traceframe_usage
= 0;
12229 xsnprintf (rs
->buf
, size
, "qTP:%x:%s", utp
->number
,
12230 phex_nz (utp
->addr
, 0));
12232 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
12233 if (reply
&& *reply
)
12236 parse_tracepoint_status (reply
+ 1, bp
, utp
);
12242 remote_trace_stop (struct target_ops
*self
)
12245 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
12246 if (*target_buf
== '\0')
12247 error (_("Target does not support this command."));
12248 if (strcmp (target_buf
, "OK") != 0)
12249 error (_("Bogus reply from target: %s"), target_buf
);
12253 remote_trace_find (struct target_ops
*self
,
12254 enum trace_find_type type
, int num
,
12255 CORE_ADDR addr1
, CORE_ADDR addr2
,
12258 struct remote_state
*rs
= get_remote_state ();
12259 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
12261 int target_frameno
= -1, target_tracept
= -1;
12263 /* Lookups other than by absolute frame number depend on the current
12264 trace selected, so make sure it is correct on the remote end
12266 if (type
!= tfind_number
)
12267 set_remote_traceframe ();
12270 strcpy (p
, "QTFrame:");
12271 p
= strchr (p
, '\0');
12275 xsnprintf (p
, endbuf
- p
, "%x", num
);
12278 xsnprintf (p
, endbuf
- p
, "pc:%s", phex_nz (addr1
, 0));
12281 xsnprintf (p
, endbuf
- p
, "tdp:%x", num
);
12284 xsnprintf (p
, endbuf
- p
, "range:%s:%s", phex_nz (addr1
, 0),
12285 phex_nz (addr2
, 0));
12287 case tfind_outside
:
12288 xsnprintf (p
, endbuf
- p
, "outside:%s:%s", phex_nz (addr1
, 0),
12289 phex_nz (addr2
, 0));
12292 error (_("Unknown trace find type %d"), type
);
12296 reply
= remote_get_noisy_reply (&(rs
->buf
), &rs
->buf_size
);
12297 if (*reply
== '\0')
12298 error (_("Target does not support this command."));
12300 while (reply
&& *reply
)
12305 target_frameno
= (int) strtol (p
, &reply
, 16);
12307 error (_("Unable to parse trace frame number"));
12308 /* Don't update our remote traceframe number cache on failure
12309 to select a remote traceframe. */
12310 if (target_frameno
== -1)
12315 target_tracept
= (int) strtol (p
, &reply
, 16);
12317 error (_("Unable to parse tracepoint number"));
12319 case 'O': /* "OK"? */
12320 if (reply
[1] == 'K' && reply
[2] == '\0')
12323 error (_("Bogus reply from target: %s"), reply
);
12326 error (_("Bogus reply from target: %s"), reply
);
12329 *tpp
= target_tracept
;
12331 rs
->remote_traceframe_number
= target_frameno
;
12332 return target_frameno
;
12336 remote_get_trace_state_variable_value (struct target_ops
*self
,
12337 int tsvnum
, LONGEST
*val
)
12339 struct remote_state
*rs
= get_remote_state ();
12343 set_remote_traceframe ();
12345 xsnprintf (rs
->buf
, get_remote_packet_size (), "qTV:%x", tsvnum
);
12347 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
12348 if (reply
&& *reply
)
12352 unpack_varlen_hex (reply
+ 1, &uval
);
12353 *val
= (LONGEST
) uval
;
12361 remote_save_trace_data (struct target_ops
*self
, const char *filename
)
12363 struct remote_state
*rs
= get_remote_state ();
12367 strcpy (p
, "QTSave:");
12369 if ((p
- rs
->buf
) + strlen (filename
) * 2 >= get_remote_packet_size ())
12370 error (_("Remote file name too long for trace save packet"));
12371 p
+= 2 * bin2hex ((gdb_byte
*) filename
, p
, strlen (filename
));
12374 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
12375 if (*reply
== '\0')
12376 error (_("Target does not support this command."));
12377 if (strcmp (reply
, "OK") != 0)
12378 error (_("Bogus reply from target: %s"), reply
);
12382 /* This is basically a memory transfer, but needs to be its own packet
12383 because we don't know how the target actually organizes its trace
12384 memory, plus we want to be able to ask for as much as possible, but
12385 not be unhappy if we don't get as much as we ask for. */
12388 remote_get_raw_trace_data (struct target_ops
*self
,
12389 gdb_byte
*buf
, ULONGEST offset
, LONGEST len
)
12391 struct remote_state
*rs
= get_remote_state ();
12397 strcpy (p
, "qTBuffer:");
12399 p
+= hexnumstr (p
, offset
);
12401 p
+= hexnumstr (p
, len
);
12405 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
12406 if (reply
&& *reply
)
12408 /* 'l' by itself means we're at the end of the buffer and
12409 there is nothing more to get. */
12413 /* Convert the reply into binary. Limit the number of bytes to
12414 convert according to our passed-in buffer size, rather than
12415 what was returned in the packet; if the target is
12416 unexpectedly generous and gives us a bigger reply than we
12417 asked for, we don't want to crash. */
12418 rslt
= hex2bin (target_buf
, buf
, len
);
12422 /* Something went wrong, flag as an error. */
12427 remote_set_disconnected_tracing (struct target_ops
*self
, int val
)
12429 struct remote_state
*rs
= get_remote_state ();
12431 if (packet_support (PACKET_DisconnectedTracing_feature
) == PACKET_ENABLE
)
12435 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTDisconnected:%x", val
);
12437 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
12438 if (*reply
== '\0')
12439 error (_("Target does not support this command."));
12440 if (strcmp (reply
, "OK") != 0)
12441 error (_("Bogus reply from target: %s"), reply
);
12444 warning (_("Target does not support disconnected tracing."));
12448 remote_core_of_thread (struct target_ops
*ops
, ptid_t ptid
)
12450 struct thread_info
*info
= find_thread_ptid (ptid
);
12452 if (info
&& info
->priv
)
12453 return info
->priv
->core
;
12458 remote_set_circular_trace_buffer (struct target_ops
*self
, int val
)
12460 struct remote_state
*rs
= get_remote_state ();
12463 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTBuffer:circular:%x", val
);
12465 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
12466 if (*reply
== '\0')
12467 error (_("Target does not support this command."));
12468 if (strcmp (reply
, "OK") != 0)
12469 error (_("Bogus reply from target: %s"), reply
);
12472 static struct traceframe_info
*
12473 remote_traceframe_info (struct target_ops
*self
)
12477 text
= target_read_stralloc (¤t_target
,
12478 TARGET_OBJECT_TRACEFRAME_INFO
, NULL
);
12481 struct traceframe_info
*info
;
12482 struct cleanup
*back_to
= make_cleanup (xfree
, text
);
12484 info
= parse_traceframe_info (text
);
12485 do_cleanups (back_to
);
12492 /* Handle the qTMinFTPILen packet. Returns the minimum length of
12493 instruction on which a fast tracepoint may be placed. Returns -1
12494 if the packet is not supported, and 0 if the minimum instruction
12495 length is unknown. */
12498 remote_get_min_fast_tracepoint_insn_len (struct target_ops
*self
)
12500 struct remote_state
*rs
= get_remote_state ();
12503 /* If we're not debugging a process yet, the IPA can't be
12505 if (!target_has_execution
)
12508 /* Make sure the remote is pointing at the right process. */
12509 set_general_process ();
12511 xsnprintf (rs
->buf
, get_remote_packet_size (), "qTMinFTPILen");
12513 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
12514 if (*reply
== '\0')
12518 ULONGEST min_insn_len
;
12520 unpack_varlen_hex (reply
, &min_insn_len
);
12522 return (int) min_insn_len
;
12527 remote_set_trace_buffer_size (struct target_ops
*self
, LONGEST val
)
12529 if (packet_support (PACKET_QTBuffer_size
) != PACKET_DISABLE
)
12531 struct remote_state
*rs
= get_remote_state ();
12532 char *buf
= rs
->buf
;
12533 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
12534 enum packet_result result
;
12536 gdb_assert (val
>= 0 || val
== -1);
12537 buf
+= xsnprintf (buf
, endbuf
- buf
, "QTBuffer:size:");
12538 /* Send -1 as literal "-1" to avoid host size dependency. */
12542 buf
+= hexnumstr (buf
, (ULONGEST
) -val
);
12545 buf
+= hexnumstr (buf
, (ULONGEST
) val
);
12548 remote_get_noisy_reply (&rs
->buf
, &rs
->buf_size
);
12549 result
= packet_ok (rs
->buf
,
12550 &remote_protocol_packets
[PACKET_QTBuffer_size
]);
12552 if (result
!= PACKET_OK
)
12553 warning (_("Bogus reply from target: %s"), rs
->buf
);
12558 remote_set_trace_notes (struct target_ops
*self
,
12559 const char *user
, const char *notes
,
12560 const char *stop_notes
)
12562 struct remote_state
*rs
= get_remote_state ();
12564 char *buf
= rs
->buf
;
12565 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
12568 buf
+= xsnprintf (buf
, endbuf
- buf
, "QTNotes:");
12571 buf
+= xsnprintf (buf
, endbuf
- buf
, "user:");
12572 nbytes
= bin2hex ((gdb_byte
*) user
, buf
, strlen (user
));
12578 buf
+= xsnprintf (buf
, endbuf
- buf
, "notes:");
12579 nbytes
= bin2hex ((gdb_byte
*) notes
, buf
, strlen (notes
));
12585 buf
+= xsnprintf (buf
, endbuf
- buf
, "tstop:");
12586 nbytes
= bin2hex ((gdb_byte
*) stop_notes
, buf
, strlen (stop_notes
));
12590 /* Ensure the buffer is terminated. */
12594 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
12595 if (*reply
== '\0')
12598 if (strcmp (reply
, "OK") != 0)
12599 error (_("Bogus reply from target: %s"), reply
);
12605 remote_use_agent (struct target_ops
*self
, int use
)
12607 if (packet_support (PACKET_QAgent
) != PACKET_DISABLE
)
12609 struct remote_state
*rs
= get_remote_state ();
12611 /* If the stub supports QAgent. */
12612 xsnprintf (rs
->buf
, get_remote_packet_size (), "QAgent:%d", use
);
12614 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
12616 if (strcmp (rs
->buf
, "OK") == 0)
12627 remote_can_use_agent (struct target_ops
*self
)
12629 return (packet_support (PACKET_QAgent
) != PACKET_DISABLE
);
12632 struct btrace_target_info
12634 /* The ptid of the traced thread. */
12637 /* The obtained branch trace configuration. */
12638 struct btrace_config conf
;
12641 /* Reset our idea of our target's btrace configuration. */
12644 remote_btrace_reset (void)
12646 struct remote_state
*rs
= get_remote_state ();
12648 memset (&rs
->btrace_config
, 0, sizeof (rs
->btrace_config
));
12651 /* Check whether the target supports branch tracing. */
12654 remote_supports_btrace (struct target_ops
*self
, enum btrace_format format
)
12656 if (packet_support (PACKET_Qbtrace_off
) != PACKET_ENABLE
)
12658 if (packet_support (PACKET_qXfer_btrace
) != PACKET_ENABLE
)
12663 case BTRACE_FORMAT_NONE
:
12666 case BTRACE_FORMAT_BTS
:
12667 return (packet_support (PACKET_Qbtrace_bts
) == PACKET_ENABLE
);
12669 case BTRACE_FORMAT_PT
:
12670 /* The trace is decoded on the host. Even if our target supports it,
12671 we still need to have libipt to decode the trace. */
12672 #if defined (HAVE_LIBIPT)
12673 return (packet_support (PACKET_Qbtrace_pt
) == PACKET_ENABLE
);
12674 #else /* !defined (HAVE_LIBIPT) */
12676 #endif /* !defined (HAVE_LIBIPT) */
12679 internal_error (__FILE__
, __LINE__
, _("Unknown branch trace format"));
12682 /* Synchronize the configuration with the target. */
12685 btrace_sync_conf (const struct btrace_config
*conf
)
12687 struct packet_config
*packet
;
12688 struct remote_state
*rs
;
12689 char *buf
, *pos
, *endbuf
;
12691 rs
= get_remote_state ();
12693 endbuf
= buf
+ get_remote_packet_size ();
12695 packet
= &remote_protocol_packets
[PACKET_Qbtrace_conf_bts_size
];
12696 if (packet_config_support (packet
) == PACKET_ENABLE
12697 && conf
->bts
.size
!= rs
->btrace_config
.bts
.size
)
12700 pos
+= xsnprintf (pos
, endbuf
- pos
, "%s=0x%x", packet
->name
,
12704 getpkt (&buf
, &rs
->buf_size
, 0);
12706 if (packet_ok (buf
, packet
) == PACKET_ERROR
)
12708 if (buf
[0] == 'E' && buf
[1] == '.')
12709 error (_("Failed to configure the BTS buffer size: %s"), buf
+ 2);
12711 error (_("Failed to configure the BTS buffer size."));
12714 rs
->btrace_config
.bts
.size
= conf
->bts
.size
;
12717 packet
= &remote_protocol_packets
[PACKET_Qbtrace_conf_pt_size
];
12718 if (packet_config_support (packet
) == PACKET_ENABLE
12719 && conf
->pt
.size
!= rs
->btrace_config
.pt
.size
)
12722 pos
+= xsnprintf (pos
, endbuf
- pos
, "%s=0x%x", packet
->name
,
12726 getpkt (&buf
, &rs
->buf_size
, 0);
12728 if (packet_ok (buf
, packet
) == PACKET_ERROR
)
12730 if (buf
[0] == 'E' && buf
[1] == '.')
12731 error (_("Failed to configure the trace buffer size: %s"), buf
+ 2);
12733 error (_("Failed to configure the trace buffer size."));
12736 rs
->btrace_config
.pt
.size
= conf
->pt
.size
;
12740 /* Read the current thread's btrace configuration from the target and
12741 store it into CONF. */
12744 btrace_read_config (struct btrace_config
*conf
)
12748 xml
= target_read_stralloc (¤t_target
,
12749 TARGET_OBJECT_BTRACE_CONF
, "");
12752 struct cleanup
*cleanup
;
12754 cleanup
= make_cleanup (xfree
, xml
);
12755 parse_xml_btrace_conf (conf
, xml
);
12756 do_cleanups (cleanup
);
12760 /* Enable branch tracing. */
12762 static struct btrace_target_info
*
12763 remote_enable_btrace (struct target_ops
*self
, ptid_t ptid
,
12764 const struct btrace_config
*conf
)
12766 struct btrace_target_info
*tinfo
= NULL
;
12767 struct packet_config
*packet
= NULL
;
12768 struct remote_state
*rs
= get_remote_state ();
12769 char *buf
= rs
->buf
;
12770 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
12772 switch (conf
->format
)
12774 case BTRACE_FORMAT_BTS
:
12775 packet
= &remote_protocol_packets
[PACKET_Qbtrace_bts
];
12778 case BTRACE_FORMAT_PT
:
12779 packet
= &remote_protocol_packets
[PACKET_Qbtrace_pt
];
12783 if (packet
== NULL
|| packet_config_support (packet
) != PACKET_ENABLE
)
12784 error (_("Target does not support branch tracing."));
12786 btrace_sync_conf (conf
);
12788 set_general_thread (ptid
);
12790 buf
+= xsnprintf (buf
, endbuf
- buf
, "%s", packet
->name
);
12792 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
12794 if (packet_ok (rs
->buf
, packet
) == PACKET_ERROR
)
12796 if (rs
->buf
[0] == 'E' && rs
->buf
[1] == '.')
12797 error (_("Could not enable branch tracing for %s: %s"),
12798 target_pid_to_str (ptid
), rs
->buf
+ 2);
12800 error (_("Could not enable branch tracing for %s."),
12801 target_pid_to_str (ptid
));
12804 tinfo
= XCNEW (struct btrace_target_info
);
12805 tinfo
->ptid
= ptid
;
12807 /* If we fail to read the configuration, we lose some information, but the
12808 tracing itself is not impacted. */
12811 btrace_read_config (&tinfo
->conf
);
12813 CATCH (err
, RETURN_MASK_ERROR
)
12815 if (err
.message
!= NULL
)
12816 warning ("%s", err
.message
);
12823 /* Disable branch tracing. */
12826 remote_disable_btrace (struct target_ops
*self
,
12827 struct btrace_target_info
*tinfo
)
12829 struct packet_config
*packet
= &remote_protocol_packets
[PACKET_Qbtrace_off
];
12830 struct remote_state
*rs
= get_remote_state ();
12831 char *buf
= rs
->buf
;
12832 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
12834 if (packet_config_support (packet
) != PACKET_ENABLE
)
12835 error (_("Target does not support branch tracing."));
12837 set_general_thread (tinfo
->ptid
);
12839 buf
+= xsnprintf (buf
, endbuf
- buf
, "%s", packet
->name
);
12841 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
12843 if (packet_ok (rs
->buf
, packet
) == PACKET_ERROR
)
12845 if (rs
->buf
[0] == 'E' && rs
->buf
[1] == '.')
12846 error (_("Could not disable branch tracing for %s: %s"),
12847 target_pid_to_str (tinfo
->ptid
), rs
->buf
+ 2);
12849 error (_("Could not disable branch tracing for %s."),
12850 target_pid_to_str (tinfo
->ptid
));
12856 /* Teardown branch tracing. */
12859 remote_teardown_btrace (struct target_ops
*self
,
12860 struct btrace_target_info
*tinfo
)
12862 /* We must not talk to the target during teardown. */
12866 /* Read the branch trace. */
12868 static enum btrace_error
12869 remote_read_btrace (struct target_ops
*self
,
12870 struct btrace_data
*btrace
,
12871 struct btrace_target_info
*tinfo
,
12872 enum btrace_read_type type
)
12874 struct packet_config
*packet
= &remote_protocol_packets
[PACKET_qXfer_btrace
];
12875 struct cleanup
*cleanup
;
12879 if (packet_config_support (packet
) != PACKET_ENABLE
)
12880 error (_("Target does not support branch tracing."));
12882 #if !defined(HAVE_LIBEXPAT)
12883 error (_("Cannot process branch tracing result. XML parsing not supported."));
12888 case BTRACE_READ_ALL
:
12891 case BTRACE_READ_NEW
:
12894 case BTRACE_READ_DELTA
:
12898 internal_error (__FILE__
, __LINE__
,
12899 _("Bad branch tracing read type: %u."),
12900 (unsigned int) type
);
12903 xml
= target_read_stralloc (¤t_target
,
12904 TARGET_OBJECT_BTRACE
, annex
);
12906 return BTRACE_ERR_UNKNOWN
;
12908 cleanup
= make_cleanup (xfree
, xml
);
12909 parse_xml_btrace (btrace
, xml
);
12910 do_cleanups (cleanup
);
12912 return BTRACE_ERR_NONE
;
12915 static const struct btrace_config
*
12916 remote_btrace_conf (struct target_ops
*self
,
12917 const struct btrace_target_info
*tinfo
)
12919 return &tinfo
->conf
;
12923 remote_augmented_libraries_svr4_read (struct target_ops
*self
)
12925 return (packet_support (PACKET_augmented_libraries_svr4_read_feature
)
12929 /* Implementation of to_load. */
12932 remote_load (struct target_ops
*self
, const char *name
, int from_tty
)
12934 generic_load (name
, from_tty
);
12937 /* Accepts an integer PID; returns a string representing a file that
12938 can be opened on the remote side to get the symbols for the child
12939 process. Returns NULL if the operation is not supported. */
12942 remote_pid_to_exec_file (struct target_ops
*self
, int pid
)
12944 static char *filename
= NULL
;
12945 struct inferior
*inf
;
12946 char *annex
= NULL
;
12948 if (packet_support (PACKET_qXfer_exec_file
) != PACKET_ENABLE
)
12951 if (filename
!= NULL
)
12954 inf
= find_inferior_pid (pid
);
12956 internal_error (__FILE__
, __LINE__
,
12957 _("not currently attached to process %d"), pid
);
12959 if (!inf
->fake_pid_p
)
12961 const int annex_size
= 9;
12963 annex
= (char *) alloca (annex_size
);
12964 xsnprintf (annex
, annex_size
, "%x", pid
);
12967 filename
= target_read_stralloc (¤t_target
,
12968 TARGET_OBJECT_EXEC_FILE
, annex
);
12973 /* Implement the to_can_do_single_step target_ops method. */
12976 remote_can_do_single_step (struct target_ops
*ops
)
12978 /* We can only tell whether target supports single step or not by
12979 supported s and S vCont actions if the stub supports vContSupported
12980 feature. If the stub doesn't support vContSupported feature,
12981 we have conservatively to think target doesn't supports single
12983 if (packet_support (PACKET_vContSupported
) == PACKET_ENABLE
)
12985 struct remote_state
*rs
= get_remote_state ();
12987 if (packet_support (PACKET_vCont
) == PACKET_SUPPORT_UNKNOWN
)
12988 remote_vcont_probe (rs
);
12990 return rs
->supports_vCont
.s
&& rs
->supports_vCont
.S
;
12996 /* Implementation of the to_execution_direction method for the remote
12999 static enum exec_direction_kind
13000 remote_execution_direction (struct target_ops
*self
)
13002 struct remote_state
*rs
= get_remote_state ();
13004 return rs
->last_resume_exec_dir
;
13008 init_remote_ops (void)
13010 remote_ops
.to_shortname
= "remote";
13011 remote_ops
.to_longname
= "Remote serial target in gdb-specific protocol";
13012 remote_ops
.to_doc
=
13013 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
13014 Specify the serial device it is connected to\n\
13015 (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).";
13016 remote_ops
.to_open
= remote_open
;
13017 remote_ops
.to_close
= remote_close
;
13018 remote_ops
.to_detach
= remote_detach
;
13019 remote_ops
.to_disconnect
= remote_disconnect
;
13020 remote_ops
.to_resume
= remote_resume
;
13021 remote_ops
.to_wait
= remote_wait
;
13022 remote_ops
.to_fetch_registers
= remote_fetch_registers
;
13023 remote_ops
.to_store_registers
= remote_store_registers
;
13024 remote_ops
.to_prepare_to_store
= remote_prepare_to_store
;
13025 remote_ops
.to_files_info
= remote_files_info
;
13026 remote_ops
.to_insert_breakpoint
= remote_insert_breakpoint
;
13027 remote_ops
.to_remove_breakpoint
= remote_remove_breakpoint
;
13028 remote_ops
.to_stopped_by_sw_breakpoint
= remote_stopped_by_sw_breakpoint
;
13029 remote_ops
.to_supports_stopped_by_sw_breakpoint
= remote_supports_stopped_by_sw_breakpoint
;
13030 remote_ops
.to_stopped_by_hw_breakpoint
= remote_stopped_by_hw_breakpoint
;
13031 remote_ops
.to_supports_stopped_by_hw_breakpoint
= remote_supports_stopped_by_hw_breakpoint
;
13032 remote_ops
.to_stopped_by_watchpoint
= remote_stopped_by_watchpoint
;
13033 remote_ops
.to_stopped_data_address
= remote_stopped_data_address
;
13034 remote_ops
.to_watchpoint_addr_within_range
=
13035 remote_watchpoint_addr_within_range
;
13036 remote_ops
.to_can_use_hw_breakpoint
= remote_check_watch_resources
;
13037 remote_ops
.to_insert_hw_breakpoint
= remote_insert_hw_breakpoint
;
13038 remote_ops
.to_remove_hw_breakpoint
= remote_remove_hw_breakpoint
;
13039 remote_ops
.to_region_ok_for_hw_watchpoint
13040 = remote_region_ok_for_hw_watchpoint
;
13041 remote_ops
.to_insert_watchpoint
= remote_insert_watchpoint
;
13042 remote_ops
.to_remove_watchpoint
= remote_remove_watchpoint
;
13043 remote_ops
.to_kill
= remote_kill
;
13044 remote_ops
.to_load
= remote_load
;
13045 remote_ops
.to_mourn_inferior
= remote_mourn
;
13046 remote_ops
.to_pass_signals
= remote_pass_signals
;
13047 remote_ops
.to_set_syscall_catchpoint
= remote_set_syscall_catchpoint
;
13048 remote_ops
.to_program_signals
= remote_program_signals
;
13049 remote_ops
.to_thread_alive
= remote_thread_alive
;
13050 remote_ops
.to_thread_name
= remote_thread_name
;
13051 remote_ops
.to_update_thread_list
= remote_update_thread_list
;
13052 remote_ops
.to_pid_to_str
= remote_pid_to_str
;
13053 remote_ops
.to_extra_thread_info
= remote_threads_extra_info
;
13054 remote_ops
.to_get_ada_task_ptid
= remote_get_ada_task_ptid
;
13055 remote_ops
.to_stop
= remote_stop
;
13056 remote_ops
.to_interrupt
= remote_interrupt
;
13057 remote_ops
.to_pass_ctrlc
= remote_pass_ctrlc
;
13058 remote_ops
.to_xfer_partial
= remote_xfer_partial
;
13059 remote_ops
.to_rcmd
= remote_rcmd
;
13060 remote_ops
.to_pid_to_exec_file
= remote_pid_to_exec_file
;
13061 remote_ops
.to_log_command
= serial_log_command
;
13062 remote_ops
.to_get_thread_local_address
= remote_get_thread_local_address
;
13063 remote_ops
.to_stratum
= process_stratum
;
13064 remote_ops
.to_has_all_memory
= default_child_has_all_memory
;
13065 remote_ops
.to_has_memory
= default_child_has_memory
;
13066 remote_ops
.to_has_stack
= default_child_has_stack
;
13067 remote_ops
.to_has_registers
= default_child_has_registers
;
13068 remote_ops
.to_has_execution
= default_child_has_execution
;
13069 remote_ops
.to_has_thread_control
= tc_schedlock
; /* can lock scheduler */
13070 remote_ops
.to_can_execute_reverse
= remote_can_execute_reverse
;
13071 remote_ops
.to_magic
= OPS_MAGIC
;
13072 remote_ops
.to_memory_map
= remote_memory_map
;
13073 remote_ops
.to_flash_erase
= remote_flash_erase
;
13074 remote_ops
.to_flash_done
= remote_flash_done
;
13075 remote_ops
.to_read_description
= remote_read_description
;
13076 remote_ops
.to_search_memory
= remote_search_memory
;
13077 remote_ops
.to_can_async_p
= remote_can_async_p
;
13078 remote_ops
.to_is_async_p
= remote_is_async_p
;
13079 remote_ops
.to_async
= remote_async
;
13080 remote_ops
.to_thread_events
= remote_thread_events
;
13081 remote_ops
.to_can_do_single_step
= remote_can_do_single_step
;
13082 remote_ops
.to_terminal_inferior
= remote_terminal_inferior
;
13083 remote_ops
.to_terminal_ours
= remote_terminal_ours
;
13084 remote_ops
.to_supports_non_stop
= remote_supports_non_stop
;
13085 remote_ops
.to_supports_multi_process
= remote_supports_multi_process
;
13086 remote_ops
.to_supports_disable_randomization
13087 = remote_supports_disable_randomization
;
13088 remote_ops
.to_filesystem_is_local
= remote_filesystem_is_local
;
13089 remote_ops
.to_fileio_open
= remote_hostio_open
;
13090 remote_ops
.to_fileio_pwrite
= remote_hostio_pwrite
;
13091 remote_ops
.to_fileio_pread
= remote_hostio_pread
;
13092 remote_ops
.to_fileio_fstat
= remote_hostio_fstat
;
13093 remote_ops
.to_fileio_close
= remote_hostio_close
;
13094 remote_ops
.to_fileio_unlink
= remote_hostio_unlink
;
13095 remote_ops
.to_fileio_readlink
= remote_hostio_readlink
;
13096 remote_ops
.to_supports_enable_disable_tracepoint
= remote_supports_enable_disable_tracepoint
;
13097 remote_ops
.to_supports_string_tracing
= remote_supports_string_tracing
;
13098 remote_ops
.to_supports_evaluation_of_breakpoint_conditions
= remote_supports_cond_breakpoints
;
13099 remote_ops
.to_can_run_breakpoint_commands
= remote_can_run_breakpoint_commands
;
13100 remote_ops
.to_trace_init
= remote_trace_init
;
13101 remote_ops
.to_download_tracepoint
= remote_download_tracepoint
;
13102 remote_ops
.to_can_download_tracepoint
= remote_can_download_tracepoint
;
13103 remote_ops
.to_download_trace_state_variable
13104 = remote_download_trace_state_variable
;
13105 remote_ops
.to_enable_tracepoint
= remote_enable_tracepoint
;
13106 remote_ops
.to_disable_tracepoint
= remote_disable_tracepoint
;
13107 remote_ops
.to_trace_set_readonly_regions
= remote_trace_set_readonly_regions
;
13108 remote_ops
.to_trace_start
= remote_trace_start
;
13109 remote_ops
.to_get_trace_status
= remote_get_trace_status
;
13110 remote_ops
.to_get_tracepoint_status
= remote_get_tracepoint_status
;
13111 remote_ops
.to_trace_stop
= remote_trace_stop
;
13112 remote_ops
.to_trace_find
= remote_trace_find
;
13113 remote_ops
.to_get_trace_state_variable_value
13114 = remote_get_trace_state_variable_value
;
13115 remote_ops
.to_save_trace_data
= remote_save_trace_data
;
13116 remote_ops
.to_upload_tracepoints
= remote_upload_tracepoints
;
13117 remote_ops
.to_upload_trace_state_variables
13118 = remote_upload_trace_state_variables
;
13119 remote_ops
.to_get_raw_trace_data
= remote_get_raw_trace_data
;
13120 remote_ops
.to_get_min_fast_tracepoint_insn_len
= remote_get_min_fast_tracepoint_insn_len
;
13121 remote_ops
.to_set_disconnected_tracing
= remote_set_disconnected_tracing
;
13122 remote_ops
.to_set_circular_trace_buffer
= remote_set_circular_trace_buffer
;
13123 remote_ops
.to_set_trace_buffer_size
= remote_set_trace_buffer_size
;
13124 remote_ops
.to_set_trace_notes
= remote_set_trace_notes
;
13125 remote_ops
.to_core_of_thread
= remote_core_of_thread
;
13126 remote_ops
.to_verify_memory
= remote_verify_memory
;
13127 remote_ops
.to_get_tib_address
= remote_get_tib_address
;
13128 remote_ops
.to_set_permissions
= remote_set_permissions
;
13129 remote_ops
.to_static_tracepoint_marker_at
13130 = remote_static_tracepoint_marker_at
;
13131 remote_ops
.to_static_tracepoint_markers_by_strid
13132 = remote_static_tracepoint_markers_by_strid
;
13133 remote_ops
.to_traceframe_info
= remote_traceframe_info
;
13134 remote_ops
.to_use_agent
= remote_use_agent
;
13135 remote_ops
.to_can_use_agent
= remote_can_use_agent
;
13136 remote_ops
.to_supports_btrace
= remote_supports_btrace
;
13137 remote_ops
.to_enable_btrace
= remote_enable_btrace
;
13138 remote_ops
.to_disable_btrace
= remote_disable_btrace
;
13139 remote_ops
.to_teardown_btrace
= remote_teardown_btrace
;
13140 remote_ops
.to_read_btrace
= remote_read_btrace
;
13141 remote_ops
.to_btrace_conf
= remote_btrace_conf
;
13142 remote_ops
.to_augmented_libraries_svr4_read
=
13143 remote_augmented_libraries_svr4_read
;
13144 remote_ops
.to_follow_fork
= remote_follow_fork
;
13145 remote_ops
.to_follow_exec
= remote_follow_exec
;
13146 remote_ops
.to_insert_fork_catchpoint
= remote_insert_fork_catchpoint
;
13147 remote_ops
.to_remove_fork_catchpoint
= remote_remove_fork_catchpoint
;
13148 remote_ops
.to_insert_vfork_catchpoint
= remote_insert_vfork_catchpoint
;
13149 remote_ops
.to_remove_vfork_catchpoint
= remote_remove_vfork_catchpoint
;
13150 remote_ops
.to_insert_exec_catchpoint
= remote_insert_exec_catchpoint
;
13151 remote_ops
.to_remove_exec_catchpoint
= remote_remove_exec_catchpoint
;
13152 remote_ops
.to_execution_direction
= remote_execution_direction
;
13155 /* Set up the extended remote vector by making a copy of the standard
13156 remote vector and adding to it. */
13159 init_extended_remote_ops (void)
13161 extended_remote_ops
= remote_ops
;
13163 extended_remote_ops
.to_shortname
= "extended-remote";
13164 extended_remote_ops
.to_longname
=
13165 "Extended remote serial target in gdb-specific protocol";
13166 extended_remote_ops
.to_doc
=
13167 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
13168 Specify the serial device it is connected to (e.g. /dev/ttya).";
13169 extended_remote_ops
.to_open
= extended_remote_open
;
13170 extended_remote_ops
.to_create_inferior
= extended_remote_create_inferior
;
13171 extended_remote_ops
.to_detach
= extended_remote_detach
;
13172 extended_remote_ops
.to_attach
= extended_remote_attach
;
13173 extended_remote_ops
.to_post_attach
= extended_remote_post_attach
;
13174 extended_remote_ops
.to_supports_disable_randomization
13175 = extended_remote_supports_disable_randomization
;
13179 remote_can_async_p (struct target_ops
*ops
)
13181 struct remote_state
*rs
= get_remote_state ();
13183 if (!target_async_permitted
)
13184 /* We only enable async when the user specifically asks for it. */
13187 /* We're async whenever the serial device is. */
13188 return serial_can_async_p (rs
->remote_desc
);
13192 remote_is_async_p (struct target_ops
*ops
)
13194 struct remote_state
*rs
= get_remote_state ();
13196 if (!target_async_permitted
)
13197 /* We only enable async when the user specifically asks for it. */
13200 /* We're async whenever the serial device is. */
13201 return serial_is_async_p (rs
->remote_desc
);
13204 /* Pass the SERIAL event on and up to the client. One day this code
13205 will be able to delay notifying the client of an event until the
13206 point where an entire packet has been received. */
13208 static serial_event_ftype remote_async_serial_handler
;
13211 remote_async_serial_handler (struct serial
*scb
, void *context
)
13213 /* Don't propogate error information up to the client. Instead let
13214 the client find out about the error by querying the target. */
13215 inferior_event_handler (INF_REG_EVENT
, NULL
);
13219 remote_async_inferior_event_handler (gdb_client_data data
)
13221 inferior_event_handler (INF_REG_EVENT
, NULL
);
13225 remote_async (struct target_ops
*ops
, int enable
)
13227 struct remote_state
*rs
= get_remote_state ();
13231 serial_async (rs
->remote_desc
, remote_async_serial_handler
, rs
);
13233 /* If there are pending events in the stop reply queue tell the
13234 event loop to process them. */
13235 if (!QUEUE_is_empty (stop_reply_p
, stop_reply_queue
))
13236 mark_async_event_handler (remote_async_inferior_event_token
);
13237 /* For simplicity, below we clear the pending events token
13238 without remembering whether it is marked, so here we always
13239 mark it. If there's actually no pending notification to
13240 process, this ends up being a no-op (other than a spurious
13241 event-loop wakeup). */
13242 if (target_is_non_stop_p ())
13243 mark_async_event_handler (rs
->notif_state
->get_pending_events_token
);
13247 serial_async (rs
->remote_desc
, NULL
, NULL
);
13248 /* If the core is disabling async, it doesn't want to be
13249 disturbed with target events. Clear all async event sources
13251 clear_async_event_handler (remote_async_inferior_event_token
);
13252 if (target_is_non_stop_p ())
13253 clear_async_event_handler (rs
->notif_state
->get_pending_events_token
);
13257 /* Implementation of the to_thread_events method. */
13260 remote_thread_events (struct target_ops
*ops
, int enable
)
13262 struct remote_state
*rs
= get_remote_state ();
13263 size_t size
= get_remote_packet_size ();
13265 if (packet_support (PACKET_QThreadEvents
) == PACKET_DISABLE
)
13268 xsnprintf (rs
->buf
, size
, "QThreadEvents:%x", enable
? 1 : 0);
13270 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
13272 switch (packet_ok (rs
->buf
,
13273 &remote_protocol_packets
[PACKET_QThreadEvents
]))
13276 if (strcmp (rs
->buf
, "OK") != 0)
13277 error (_("Remote refused setting thread events: %s"), rs
->buf
);
13280 warning (_("Remote failure reply: %s"), rs
->buf
);
13282 case PACKET_UNKNOWN
:
13288 set_remote_cmd (char *args
, int from_tty
)
13290 help_list (remote_set_cmdlist
, "set remote ", all_commands
, gdb_stdout
);
13294 show_remote_cmd (char *args
, int from_tty
)
13296 /* We can't just use cmd_show_list here, because we want to skip
13297 the redundant "show remote Z-packet" and the legacy aliases. */
13298 struct cleanup
*showlist_chain
;
13299 struct cmd_list_element
*list
= remote_show_cmdlist
;
13300 struct ui_out
*uiout
= current_uiout
;
13302 showlist_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "showlist");
13303 for (; list
!= NULL
; list
= list
->next
)
13304 if (strcmp (list
->name
, "Z-packet") == 0)
13306 else if (list
->type
== not_set_cmd
)
13307 /* Alias commands are exactly like the original, except they
13308 don't have the normal type. */
13312 struct cleanup
*option_chain
13313 = make_cleanup_ui_out_tuple_begin_end (uiout
, "option");
13315 ui_out_field_string (uiout
, "name", list
->name
);
13316 ui_out_text (uiout
, ": ");
13317 if (list
->type
== show_cmd
)
13318 do_show_command ((char *) NULL
, from_tty
, list
);
13320 cmd_func (list
, NULL
, from_tty
);
13321 /* Close the tuple. */
13322 do_cleanups (option_chain
);
13325 /* Close the tuple. */
13326 do_cleanups (showlist_chain
);
13330 /* Function to be called whenever a new objfile (shlib) is detected. */
13332 remote_new_objfile (struct objfile
*objfile
)
13334 struct remote_state
*rs
= get_remote_state ();
13336 if (rs
->remote_desc
!= 0) /* Have a remote connection. */
13337 remote_check_symbols ();
13340 /* Pull all the tracepoints defined on the target and create local
13341 data structures representing them. We don't want to create real
13342 tracepoints yet, we don't want to mess up the user's existing
13346 remote_upload_tracepoints (struct target_ops
*self
, struct uploaded_tp
**utpp
)
13348 struct remote_state
*rs
= get_remote_state ();
13351 /* Ask for a first packet of tracepoint definition. */
13353 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
13355 while (*p
&& *p
!= 'l')
13357 parse_tracepoint_definition (p
, utpp
);
13358 /* Ask for another packet of tracepoint definition. */
13360 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
13367 remote_upload_trace_state_variables (struct target_ops
*self
,
13368 struct uploaded_tsv
**utsvp
)
13370 struct remote_state
*rs
= get_remote_state ();
13373 /* Ask for a first packet of variable definition. */
13375 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
13377 while (*p
&& *p
!= 'l')
13379 parse_tsv_definition (p
, utsvp
);
13380 /* Ask for another packet of variable definition. */
13382 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
13388 /* The "set/show range-stepping" show hook. */
13391 show_range_stepping (struct ui_file
*file
, int from_tty
,
13392 struct cmd_list_element
*c
,
13395 fprintf_filtered (file
,
13396 _("Debugger's willingness to use range stepping "
13397 "is %s.\n"), value
);
13400 /* The "set/show range-stepping" set hook. */
13403 set_range_stepping (char *ignore_args
, int from_tty
,
13404 struct cmd_list_element
*c
)
13406 struct remote_state
*rs
= get_remote_state ();
13408 /* Whene enabling, check whether range stepping is actually
13409 supported by the target, and warn if not. */
13410 if (use_range_stepping
)
13412 if (rs
->remote_desc
!= NULL
)
13414 if (packet_support (PACKET_vCont
) == PACKET_SUPPORT_UNKNOWN
)
13415 remote_vcont_probe (rs
);
13417 if (packet_support (PACKET_vCont
) == PACKET_ENABLE
13418 && rs
->supports_vCont
.r
)
13422 warning (_("Range stepping is not supported by the current target"));
13427 _initialize_remote (void)
13429 struct cmd_list_element
*cmd
;
13430 const char *cmd_name
;
13432 /* architecture specific data */
13433 remote_gdbarch_data_handle
=
13434 gdbarch_data_register_post_init (init_remote_state
);
13435 remote_g_packet_data_handle
=
13436 gdbarch_data_register_pre_init (remote_g_packet_data_init
);
13439 = register_program_space_data_with_cleanup (NULL
,
13440 remote_pspace_data_cleanup
);
13442 /* Initialize the per-target state. At the moment there is only one
13443 of these, not one per target. Only one target is active at a
13445 remote_state
= new_remote_state ();
13447 init_remote_ops ();
13448 add_target (&remote_ops
);
13450 init_extended_remote_ops ();
13451 add_target (&extended_remote_ops
);
13453 /* Hook into new objfile notification. */
13454 observer_attach_new_objfile (remote_new_objfile
);
13455 /* We're no longer interested in notification events of an inferior
13457 observer_attach_inferior_exit (discard_pending_stop_replies
);
13460 init_remote_threadtests ();
13463 stop_reply_queue
= QUEUE_alloc (stop_reply_p
, stop_reply_xfree
);
13464 /* set/show remote ... */
13466 add_prefix_cmd ("remote", class_maintenance
, set_remote_cmd
, _("\
13467 Remote protocol specific variables\n\
13468 Configure various remote-protocol specific variables such as\n\
13469 the packets being used"),
13470 &remote_set_cmdlist
, "set remote ",
13471 0 /* allow-unknown */, &setlist
);
13472 add_prefix_cmd ("remote", class_maintenance
, show_remote_cmd
, _("\
13473 Remote protocol specific variables\n\
13474 Configure various remote-protocol specific variables such as\n\
13475 the packets being used"),
13476 &remote_show_cmdlist
, "show remote ",
13477 0 /* allow-unknown */, &showlist
);
13479 add_cmd ("compare-sections", class_obscure
, compare_sections_command
, _("\
13480 Compare section data on target to the exec file.\n\
13481 Argument is a single section name (default: all loaded sections).\n\
13482 To compare only read-only loaded sections, specify the -r option."),
13485 add_cmd ("packet", class_maintenance
, packet_command
, _("\
13486 Send an arbitrary packet to a remote target.\n\
13487 maintenance packet TEXT\n\
13488 If GDB is talking to an inferior via the GDB serial protocol, then\n\
13489 this command sends the string TEXT to the inferior, and displays the\n\
13490 response packet. GDB supplies the initial `$' character, and the\n\
13491 terminating `#' character and checksum."),
13494 add_setshow_boolean_cmd ("remotebreak", no_class
, &remote_break
, _("\
13495 Set whether to send break if interrupted."), _("\
13496 Show whether to send break if interrupted."), _("\
13497 If set, a break, instead of a cntrl-c, is sent to the remote target."),
13498 set_remotebreak
, show_remotebreak
,
13499 &setlist
, &showlist
);
13500 cmd_name
= "remotebreak";
13501 cmd
= lookup_cmd (&cmd_name
, setlist
, "", -1, 1);
13502 deprecate_cmd (cmd
, "set remote interrupt-sequence");
13503 cmd_name
= "remotebreak"; /* needed because lookup_cmd updates the pointer */
13504 cmd
= lookup_cmd (&cmd_name
, showlist
, "", -1, 1);
13505 deprecate_cmd (cmd
, "show remote interrupt-sequence");
13507 add_setshow_enum_cmd ("interrupt-sequence", class_support
,
13508 interrupt_sequence_modes
, &interrupt_sequence_mode
,
13510 Set interrupt sequence to remote target."), _("\
13511 Show interrupt sequence to remote target."), _("\
13512 Valid value is \"Ctrl-C\", \"BREAK\" or \"BREAK-g\". The default is \"Ctrl-C\"."),
13513 NULL
, show_interrupt_sequence
,
13514 &remote_set_cmdlist
,
13515 &remote_show_cmdlist
);
13517 add_setshow_boolean_cmd ("interrupt-on-connect", class_support
,
13518 &interrupt_on_connect
, _("\
13519 Set whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \
13520 Show whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \
13521 If set, interrupt sequence is sent to remote target."),
13523 &remote_set_cmdlist
, &remote_show_cmdlist
);
13525 /* Install commands for configuring memory read/write packets. */
13527 add_cmd ("remotewritesize", no_class
, set_memory_write_packet_size
, _("\
13528 Set the maximum number of bytes per memory write packet (deprecated)."),
13530 add_cmd ("remotewritesize", no_class
, show_memory_write_packet_size
, _("\
13531 Show the maximum number of bytes per memory write packet (deprecated)."),
13533 add_cmd ("memory-write-packet-size", no_class
,
13534 set_memory_write_packet_size
, _("\
13535 Set the maximum number of bytes per memory-write packet.\n\
13536 Specify the number of bytes in a packet or 0 (zero) for the\n\
13537 default packet size. The actual limit is further reduced\n\
13538 dependent on the target. Specify ``fixed'' to disable the\n\
13539 further restriction and ``limit'' to enable that restriction."),
13540 &remote_set_cmdlist
);
13541 add_cmd ("memory-read-packet-size", no_class
,
13542 set_memory_read_packet_size
, _("\
13543 Set the maximum number of bytes per memory-read packet.\n\
13544 Specify the number of bytes in a packet or 0 (zero) for the\n\
13545 default packet size. The actual limit is further reduced\n\
13546 dependent on the target. Specify ``fixed'' to disable the\n\
13547 further restriction and ``limit'' to enable that restriction."),
13548 &remote_set_cmdlist
);
13549 add_cmd ("memory-write-packet-size", no_class
,
13550 show_memory_write_packet_size
,
13551 _("Show the maximum number of bytes per memory-write packet."),
13552 &remote_show_cmdlist
);
13553 add_cmd ("memory-read-packet-size", no_class
,
13554 show_memory_read_packet_size
,
13555 _("Show the maximum number of bytes per memory-read packet."),
13556 &remote_show_cmdlist
);
13558 add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class
,
13559 &remote_hw_watchpoint_limit
, _("\
13560 Set the maximum number of target hardware watchpoints."), _("\
13561 Show the maximum number of target hardware watchpoints."), _("\
13562 Specify a negative limit for unlimited."),
13563 NULL
, NULL
, /* FIXME: i18n: The maximum
13564 number of target hardware
13565 watchpoints is %s. */
13566 &remote_set_cmdlist
, &remote_show_cmdlist
);
13567 add_setshow_zinteger_cmd ("hardware-watchpoint-length-limit", no_class
,
13568 &remote_hw_watchpoint_length_limit
, _("\
13569 Set the maximum length (in bytes) of a target hardware watchpoint."), _("\
13570 Show the maximum length (in bytes) of a target hardware watchpoint."), _("\
13571 Specify a negative limit for unlimited."),
13572 NULL
, NULL
, /* FIXME: i18n: The maximum
13573 length (in bytes) of a target
13574 hardware watchpoint is %s. */
13575 &remote_set_cmdlist
, &remote_show_cmdlist
);
13576 add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class
,
13577 &remote_hw_breakpoint_limit
, _("\
13578 Set the maximum number of target hardware breakpoints."), _("\
13579 Show the maximum number of target hardware breakpoints."), _("\
13580 Specify a negative limit for unlimited."),
13581 NULL
, NULL
, /* FIXME: i18n: The maximum
13582 number of target hardware
13583 breakpoints is %s. */
13584 &remote_set_cmdlist
, &remote_show_cmdlist
);
13586 add_setshow_zuinteger_cmd ("remoteaddresssize", class_obscure
,
13587 &remote_address_size
, _("\
13588 Set the maximum size of the address (in bits) in a memory packet."), _("\
13589 Show the maximum size of the address (in bits) in a memory packet."), NULL
,
13591 NULL
, /* FIXME: i18n: */
13592 &setlist
, &showlist
);
13594 init_all_packet_configs ();
13596 add_packet_config_cmd (&remote_protocol_packets
[PACKET_X
],
13597 "X", "binary-download", 1);
13599 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vCont
],
13600 "vCont", "verbose-resume", 0);
13602 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QPassSignals
],
13603 "QPassSignals", "pass-signals", 0);
13605 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QCatchSyscalls
],
13606 "QCatchSyscalls", "catch-syscalls", 0);
13608 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QProgramSignals
],
13609 "QProgramSignals", "program-signals", 0);
13611 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSymbol
],
13612 "qSymbol", "symbol-lookup", 0);
13614 add_packet_config_cmd (&remote_protocol_packets
[PACKET_P
],
13615 "P", "set-register", 1);
13617 add_packet_config_cmd (&remote_protocol_packets
[PACKET_p
],
13618 "p", "fetch-register", 1);
13620 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z0
],
13621 "Z0", "software-breakpoint", 0);
13623 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z1
],
13624 "Z1", "hardware-breakpoint", 0);
13626 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z2
],
13627 "Z2", "write-watchpoint", 0);
13629 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z3
],
13630 "Z3", "read-watchpoint", 0);
13632 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z4
],
13633 "Z4", "access-watchpoint", 0);
13635 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_auxv
],
13636 "qXfer:auxv:read", "read-aux-vector", 0);
13638 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_exec_file
],
13639 "qXfer:exec-file:read", "pid-to-exec-file", 0);
13641 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_features
],
13642 "qXfer:features:read", "target-features", 0);
13644 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_libraries
],
13645 "qXfer:libraries:read", "library-info", 0);
13647 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_libraries_svr4
],
13648 "qXfer:libraries-svr4:read", "library-info-svr4", 0);
13650 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_memory_map
],
13651 "qXfer:memory-map:read", "memory-map", 0);
13653 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_spu_read
],
13654 "qXfer:spu:read", "read-spu-object", 0);
13656 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_spu_write
],
13657 "qXfer:spu:write", "write-spu-object", 0);
13659 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_osdata
],
13660 "qXfer:osdata:read", "osdata", 0);
13662 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_threads
],
13663 "qXfer:threads:read", "threads", 0);
13665 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_siginfo_read
],
13666 "qXfer:siginfo:read", "read-siginfo-object", 0);
13668 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_siginfo_write
],
13669 "qXfer:siginfo:write", "write-siginfo-object", 0);
13671 add_packet_config_cmd
13672 (&remote_protocol_packets
[PACKET_qXfer_traceframe_info
],
13673 "qXfer:traceframe-info:read", "traceframe-info", 0);
13675 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_uib
],
13676 "qXfer:uib:read", "unwind-info-block", 0);
13678 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qGetTLSAddr
],
13679 "qGetTLSAddr", "get-thread-local-storage-address",
13682 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qGetTIBAddr
],
13683 "qGetTIBAddr", "get-thread-information-block-address",
13686 add_packet_config_cmd (&remote_protocol_packets
[PACKET_bc
],
13687 "bc", "reverse-continue", 0);
13689 add_packet_config_cmd (&remote_protocol_packets
[PACKET_bs
],
13690 "bs", "reverse-step", 0);
13692 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSupported
],
13693 "qSupported", "supported-packets", 0);
13695 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSearch_memory
],
13696 "qSearch:memory", "search-memory", 0);
13698 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qTStatus
],
13699 "qTStatus", "trace-status", 0);
13701 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_setfs
],
13702 "vFile:setfs", "hostio-setfs", 0);
13704 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_open
],
13705 "vFile:open", "hostio-open", 0);
13707 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_pread
],
13708 "vFile:pread", "hostio-pread", 0);
13710 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_pwrite
],
13711 "vFile:pwrite", "hostio-pwrite", 0);
13713 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_close
],
13714 "vFile:close", "hostio-close", 0);
13716 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_unlink
],
13717 "vFile:unlink", "hostio-unlink", 0);
13719 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_readlink
],
13720 "vFile:readlink", "hostio-readlink", 0);
13722 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_fstat
],
13723 "vFile:fstat", "hostio-fstat", 0);
13725 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vAttach
],
13726 "vAttach", "attach", 0);
13728 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vRun
],
13731 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QStartNoAckMode
],
13732 "QStartNoAckMode", "noack", 0);
13734 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vKill
],
13735 "vKill", "kill", 0);
13737 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qAttached
],
13738 "qAttached", "query-attached", 0);
13740 add_packet_config_cmd (&remote_protocol_packets
[PACKET_ConditionalTracepoints
],
13741 "ConditionalTracepoints",
13742 "conditional-tracepoints", 0);
13744 add_packet_config_cmd (&remote_protocol_packets
[PACKET_ConditionalBreakpoints
],
13745 "ConditionalBreakpoints",
13746 "conditional-breakpoints", 0);
13748 add_packet_config_cmd (&remote_protocol_packets
[PACKET_BreakpointCommands
],
13749 "BreakpointCommands",
13750 "breakpoint-commands", 0);
13752 add_packet_config_cmd (&remote_protocol_packets
[PACKET_FastTracepoints
],
13753 "FastTracepoints", "fast-tracepoints", 0);
13755 add_packet_config_cmd (&remote_protocol_packets
[PACKET_TracepointSource
],
13756 "TracepointSource", "TracepointSource", 0);
13758 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QAllow
],
13759 "QAllow", "allow", 0);
13761 add_packet_config_cmd (&remote_protocol_packets
[PACKET_StaticTracepoints
],
13762 "StaticTracepoints", "static-tracepoints", 0);
13764 add_packet_config_cmd (&remote_protocol_packets
[PACKET_InstallInTrace
],
13765 "InstallInTrace", "install-in-trace", 0);
13767 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_statictrace_read
],
13768 "qXfer:statictrace:read", "read-sdata-object", 0);
13770 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_fdpic
],
13771 "qXfer:fdpic:read", "read-fdpic-loadmap", 0);
13773 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QDisableRandomization
],
13774 "QDisableRandomization", "disable-randomization", 0);
13776 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QAgent
],
13777 "QAgent", "agent", 0);
13779 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QTBuffer_size
],
13780 "QTBuffer:size", "trace-buffer-size", 0);
13782 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Qbtrace_off
],
13783 "Qbtrace:off", "disable-btrace", 0);
13785 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Qbtrace_bts
],
13786 "Qbtrace:bts", "enable-btrace-bts", 0);
13788 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Qbtrace_pt
],
13789 "Qbtrace:pt", "enable-btrace-pt", 0);
13791 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_btrace
],
13792 "qXfer:btrace", "read-btrace", 0);
13794 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_btrace_conf
],
13795 "qXfer:btrace-conf", "read-btrace-conf", 0);
13797 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Qbtrace_conf_bts_size
],
13798 "Qbtrace-conf:bts:size", "btrace-conf-bts-size", 0);
13800 add_packet_config_cmd (&remote_protocol_packets
[PACKET_multiprocess_feature
],
13801 "multiprocess-feature", "multiprocess-feature", 0);
13803 add_packet_config_cmd (&remote_protocol_packets
[PACKET_swbreak_feature
],
13804 "swbreak-feature", "swbreak-feature", 0);
13806 add_packet_config_cmd (&remote_protocol_packets
[PACKET_hwbreak_feature
],
13807 "hwbreak-feature", "hwbreak-feature", 0);
13809 add_packet_config_cmd (&remote_protocol_packets
[PACKET_fork_event_feature
],
13810 "fork-event-feature", "fork-event-feature", 0);
13812 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vfork_event_feature
],
13813 "vfork-event-feature", "vfork-event-feature", 0);
13815 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Qbtrace_conf_pt_size
],
13816 "Qbtrace-conf:pt:size", "btrace-conf-pt-size", 0);
13818 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vContSupported
],
13819 "vContSupported", "verbose-resume-supported", 0);
13821 add_packet_config_cmd (&remote_protocol_packets
[PACKET_exec_event_feature
],
13822 "exec-event-feature", "exec-event-feature", 0);
13824 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vCtrlC
],
13825 "vCtrlC", "ctrl-c", 0);
13827 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QThreadEvents
],
13828 "QThreadEvents", "thread-events", 0);
13830 add_packet_config_cmd (&remote_protocol_packets
[PACKET_no_resumed
],
13831 "N stop reply", "no-resumed-stop-reply", 0);
13833 /* Assert that we've registered "set remote foo-packet" commands
13834 for all packet configs. */
13838 for (i
= 0; i
< PACKET_MAX
; i
++)
13840 /* Ideally all configs would have a command associated. Some
13841 still don't though. */
13846 case PACKET_QNonStop
:
13847 case PACKET_EnableDisableTracepoints_feature
:
13848 case PACKET_tracenz_feature
:
13849 case PACKET_DisconnectedTracing_feature
:
13850 case PACKET_augmented_libraries_svr4_read_feature
:
13852 /* Additions to this list need to be well justified:
13853 pre-existing packets are OK; new packets are not. */
13861 /* This catches both forgetting to add a config command, and
13862 forgetting to remove a packet from the exception list. */
13863 gdb_assert (excepted
== (remote_protocol_packets
[i
].name
== NULL
));
13867 /* Keep the old ``set remote Z-packet ...'' working. Each individual
13868 Z sub-packet has its own set and show commands, but users may
13869 have sets to this variable in their .gdbinit files (or in their
13871 add_setshow_auto_boolean_cmd ("Z-packet", class_obscure
,
13872 &remote_Z_packet_detect
, _("\
13873 Set use of remote protocol `Z' packets"), _("\
13874 Show use of remote protocol `Z' packets "), _("\
13875 When set, GDB will attempt to use the remote breakpoint and watchpoint\n\
13877 set_remote_protocol_Z_packet_cmd
,
13878 show_remote_protocol_Z_packet_cmd
,
13879 /* FIXME: i18n: Use of remote protocol
13880 `Z' packets is %s. */
13881 &remote_set_cmdlist
, &remote_show_cmdlist
);
13883 add_prefix_cmd ("remote", class_files
, remote_command
, _("\
13884 Manipulate files on the remote system\n\
13885 Transfer files to and from the remote target system."),
13886 &remote_cmdlist
, "remote ",
13887 0 /* allow-unknown */, &cmdlist
);
13889 add_cmd ("put", class_files
, remote_put_command
,
13890 _("Copy a local file to the remote system."),
13893 add_cmd ("get", class_files
, remote_get_command
,
13894 _("Copy a remote file to the local system."),
13897 add_cmd ("delete", class_files
, remote_delete_command
,
13898 _("Delete a remote file."),
13901 add_setshow_string_noescape_cmd ("exec-file", class_files
,
13902 &remote_exec_file_var
, _("\
13903 Set the remote pathname for \"run\""), _("\
13904 Show the remote pathname for \"run\""), NULL
,
13905 set_remote_exec_file
,
13906 show_remote_exec_file
,
13907 &remote_set_cmdlist
,
13908 &remote_show_cmdlist
);
13910 add_setshow_boolean_cmd ("range-stepping", class_run
,
13911 &use_range_stepping
, _("\
13912 Enable or disable range stepping."), _("\
13913 Show whether target-assisted range stepping is enabled."), _("\
13914 If on, and the target supports it, when stepping a source line, GDB\n\
13915 tells the target to step the corresponding range of addresses itself instead\n\
13916 of issuing multiple single-steps. This speeds up source level\n\
13917 stepping. If off, GDB always issues single-steps, even if range\n\
13918 stepping is supported by the target. The default is on."),
13919 set_range_stepping
,
13920 show_range_stepping
,
13924 /* Eventually initialize fileio. See fileio.c */
13925 initialize_remote_fileio (remote_set_cmdlist
, remote_show_cmdlist
);
13927 /* Take advantage of the fact that the TID field is not used, to tag
13928 special ptids with it set to != 0. */
13929 magic_null_ptid
= ptid_build (42000, -1, 1);
13930 not_sent_ptid
= ptid_build (42000, -2, 1);
13931 any_thread_ptid
= ptid_build (42000, 0, 1);
13933 target_buf_size
= 2048;
13934 target_buf
= (char *) xmalloc (target_buf_size
);