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 /* gdbserver < 7.7 (before its fix from 2013-12-11) did reply to any
4035 unknown 'v' packet with string "OK". "OK" gets interpreted by GDB
4036 as a reply to known packet. For packet "vFile:setfs:" it is an
4037 invalid reply and GDB would return error in
4038 remote_hostio_set_filesystem, making remote files access impossible.
4039 Disable "vFile:setfs:" in such case. Do not disable other 'v' packets as
4040 other "vFile" packets get correctly detected even on gdbserver < 7.7. */
4042 const char v_mustreplyempty
[] = "vMustReplyEmpty";
4044 putpkt (v_mustreplyempty
);
4045 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4046 if (strcmp (rs
->buf
, "OK") == 0)
4047 remote_protocol_packets
[PACKET_vFile_setfs
].support
= PACKET_DISABLE
;
4048 else if (strcmp (rs
->buf
, "") != 0)
4049 error (_("Remote replied unexpectedly to '%s': %s"), v_mustreplyempty
,
4053 /* Next, we possibly activate noack mode.
4055 If the QStartNoAckMode packet configuration is set to AUTO,
4056 enable noack mode if the stub reported a wish for it with
4059 If set to TRUE, then enable noack mode even if the stub didn't
4060 report it in qSupported. If the stub doesn't reply OK, the
4061 session ends with an error.
4063 If FALSE, then don't activate noack mode, regardless of what the
4064 stub claimed should be the default with qSupported. */
4066 noack_config
= &remote_protocol_packets
[PACKET_QStartNoAckMode
];
4067 if (packet_config_support (noack_config
) != PACKET_DISABLE
)
4069 putpkt ("QStartNoAckMode");
4070 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4071 if (packet_ok (rs
->buf
, noack_config
) == PACKET_OK
)
4077 /* Tell the remote that we are using the extended protocol. */
4079 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4082 /* Let the target know which signals it is allowed to pass down to
4084 update_signals_program_target ();
4086 /* Next, if the target can specify a description, read it. We do
4087 this before anything involving memory or registers. */
4088 target_find_description ();
4090 /* Next, now that we know something about the target, update the
4091 address spaces in the program spaces. */
4092 update_address_spaces ();
4094 /* On OSs where the list of libraries is global to all
4095 processes, we fetch them early. */
4096 if (gdbarch_has_global_solist (target_gdbarch ()))
4097 solib_add (NULL
, from_tty
, target
, auto_solib_add
);
4099 if (target_is_non_stop_p ())
4101 if (packet_support (PACKET_QNonStop
) != PACKET_ENABLE
)
4102 error (_("Non-stop mode requested, but remote "
4103 "does not support non-stop"));
4105 putpkt ("QNonStop:1");
4106 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4108 if (strcmp (rs
->buf
, "OK") != 0)
4109 error (_("Remote refused setting non-stop mode with: %s"), rs
->buf
);
4111 /* Find about threads and processes the stub is already
4112 controlling. We default to adding them in the running state.
4113 The '?' query below will then tell us about which threads are
4115 remote_update_thread_list (target
);
4117 else if (packet_support (PACKET_QNonStop
) == PACKET_ENABLE
)
4119 /* Don't assume that the stub can operate in all-stop mode.
4120 Request it explicitly. */
4121 putpkt ("QNonStop:0");
4122 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4124 if (strcmp (rs
->buf
, "OK") != 0)
4125 error (_("Remote refused setting all-stop mode with: %s"), rs
->buf
);
4128 /* Upload TSVs regardless of whether the target is running or not. The
4129 remote stub, such as GDBserver, may have some predefined or builtin
4130 TSVs, even if the target is not running. */
4131 if (remote_get_trace_status (target
, current_trace_status ()) != -1)
4133 struct uploaded_tsv
*uploaded_tsvs
= NULL
;
4135 remote_upload_trace_state_variables (target
, &uploaded_tsvs
);
4136 merge_uploaded_trace_state_variables (&uploaded_tsvs
);
4139 /* Check whether the target is running now. */
4141 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4143 if (!target_is_non_stop_p ())
4145 if (rs
->buf
[0] == 'W' || rs
->buf
[0] == 'X')
4148 error (_("The target is not running (try extended-remote?)"));
4150 /* We're connected, but not running. Drop out before we
4151 call start_remote. */
4152 rs
->starting_up
= 0;
4157 /* Save the reply for later. */
4158 wait_status
= (char *) alloca (strlen (rs
->buf
) + 1);
4159 strcpy (wait_status
, rs
->buf
);
4162 /* Fetch thread list. */
4163 target_update_thread_list ();
4165 /* Let the stub know that we want it to return the thread. */
4166 set_continue_thread (minus_one_ptid
);
4168 if (thread_count () == 0)
4170 /* Target has no concept of threads at all. GDB treats
4171 non-threaded target as single-threaded; add a main
4173 add_current_inferior_and_thread (wait_status
);
4177 /* We have thread information; select the thread the target
4178 says should be current. If we're reconnecting to a
4179 multi-threaded program, this will ideally be the thread
4180 that last reported an event before GDB disconnected. */
4181 inferior_ptid
= get_current_thread (wait_status
);
4182 if (ptid_equal (inferior_ptid
, null_ptid
))
4184 /* Odd... The target was able to list threads, but not
4185 tell us which thread was current (no "thread"
4186 register in T stop reply?). Just pick the first
4187 thread in the thread list then. */
4190 fprintf_unfiltered (gdb_stdlog
,
4191 "warning: couldn't determine remote "
4192 "current thread; picking first in list.\n");
4194 inferior_ptid
= thread_list
->ptid
;
4198 /* init_wait_for_inferior should be called before get_offsets in order
4199 to manage `inserted' flag in bp loc in a correct state.
4200 breakpoint_init_inferior, called from init_wait_for_inferior, set
4201 `inserted' flag to 0, while before breakpoint_re_set, called from
4202 start_remote, set `inserted' flag to 1. In the initialization of
4203 inferior, breakpoint_init_inferior should be called first, and then
4204 breakpoint_re_set can be called. If this order is broken, state of
4205 `inserted' flag is wrong, and cause some problems on breakpoint
4207 init_wait_for_inferior ();
4209 get_offsets (); /* Get text, data & bss offsets. */
4211 /* If we could not find a description using qXfer, and we know
4212 how to do it some other way, try again. This is not
4213 supported for non-stop; it could be, but it is tricky if
4214 there are no stopped threads when we connect. */
4215 if (remote_read_description_p (target
)
4216 && gdbarch_target_desc (target_gdbarch ()) == NULL
)
4218 target_clear_description ();
4219 target_find_description ();
4222 /* Use the previously fetched status. */
4223 gdb_assert (wait_status
!= NULL
);
4224 strcpy (rs
->buf
, wait_status
);
4225 rs
->cached_wait_status
= 1;
4227 start_remote (from_tty
); /* Initialize gdb process mechanisms. */
4231 /* Clear WFI global state. Do this before finding about new
4232 threads and inferiors, and setting the current inferior.
4233 Otherwise we would clear the proceed status of the current
4234 inferior when we want its stop_soon state to be preserved
4235 (see notice_new_inferior). */
4236 init_wait_for_inferior ();
4238 /* In non-stop, we will either get an "OK", meaning that there
4239 are no stopped threads at this time; or, a regular stop
4240 reply. In the latter case, there may be more than one thread
4241 stopped --- we pull them all out using the vStopped
4243 if (strcmp (rs
->buf
, "OK") != 0)
4245 struct notif_client
*notif
= ¬if_client_stop
;
4247 /* remote_notif_get_pending_replies acks this one, and gets
4249 rs
->notif_state
->pending_event
[notif_client_stop
.id
]
4250 = remote_notif_parse (notif
, rs
->buf
);
4251 remote_notif_get_pending_events (notif
);
4254 if (thread_count () == 0)
4257 error (_("The target is not running (try extended-remote?)"));
4259 /* We're connected, but not running. Drop out before we
4260 call start_remote. */
4261 rs
->starting_up
= 0;
4265 /* In non-stop mode, any cached wait status will be stored in
4266 the stop reply queue. */
4267 gdb_assert (wait_status
== NULL
);
4269 /* Report all signals during attach/startup. */
4270 remote_pass_signals (target
, 0, NULL
);
4272 /* If there are already stopped threads, mark them stopped and
4273 report their stops before giving the prompt to the user. */
4274 process_initial_stop_replies (from_tty
);
4276 if (target_can_async_p ())
4280 /* If we connected to a live target, do some additional setup. */
4281 if (target_has_execution
)
4283 if (symfile_objfile
) /* No use without a symbol-file. */
4284 remote_check_symbols ();
4287 /* Possibly the target has been engaged in a trace run started
4288 previously; find out where things are at. */
4289 if (remote_get_trace_status (target
, current_trace_status ()) != -1)
4291 struct uploaded_tp
*uploaded_tps
= NULL
;
4293 if (current_trace_status ()->running
)
4294 printf_filtered (_("Trace is already running on the target.\n"));
4296 remote_upload_tracepoints (target
, &uploaded_tps
);
4298 merge_uploaded_tracepoints (&uploaded_tps
);
4301 /* The thread and inferior lists are now synchronized with the
4302 target, our symbols have been relocated, and we're merged the
4303 target's tracepoints with ours. We're done with basic start
4305 rs
->starting_up
= 0;
4307 /* Maybe breakpoints are global and need to be inserted now. */
4308 if (breakpoints_should_be_inserted_now ())
4309 insert_breakpoints ();
4312 /* Open a connection to a remote debugger.
4313 NAME is the filename used for communication. */
4316 remote_open (const char *name
, int from_tty
)
4318 remote_open_1 (name
, from_tty
, &remote_ops
, 0);
4321 /* Open a connection to a remote debugger using the extended
4322 remote gdb protocol. NAME is the filename used for communication. */
4325 extended_remote_open (const char *name
, int from_tty
)
4327 remote_open_1 (name
, from_tty
, &extended_remote_ops
, 1 /*extended_p */);
4330 /* Reset all packets back to "unknown support". Called when opening a
4331 new connection to a remote target. */
4334 reset_all_packet_configs_support (void)
4338 for (i
= 0; i
< PACKET_MAX
; i
++)
4339 remote_protocol_packets
[i
].support
= PACKET_SUPPORT_UNKNOWN
;
4342 /* Initialize all packet configs. */
4345 init_all_packet_configs (void)
4349 for (i
= 0; i
< PACKET_MAX
; i
++)
4351 remote_protocol_packets
[i
].detect
= AUTO_BOOLEAN_AUTO
;
4352 remote_protocol_packets
[i
].support
= PACKET_SUPPORT_UNKNOWN
;
4356 /* Symbol look-up. */
4359 remote_check_symbols (void)
4361 struct remote_state
*rs
= get_remote_state ();
4362 char *msg
, *reply
, *tmp
;
4365 struct cleanup
*old_chain
;
4367 /* The remote side has no concept of inferiors that aren't running
4368 yet, it only knows about running processes. If we're connected
4369 but our current inferior is not running, we should not invite the
4370 remote target to request symbol lookups related to its
4371 (unrelated) current process. */
4372 if (!target_has_execution
)
4375 if (packet_support (PACKET_qSymbol
) == PACKET_DISABLE
)
4378 /* Make sure the remote is pointing at the right process. Note
4379 there's no way to select "no process". */
4380 set_general_process ();
4382 /* Allocate a message buffer. We can't reuse the input buffer in RS,
4383 because we need both at the same time. */
4384 msg
= (char *) xmalloc (get_remote_packet_size ());
4385 old_chain
= make_cleanup (xfree
, msg
);
4386 reply
= (char *) xmalloc (get_remote_packet_size ());
4387 make_cleanup (free_current_contents
, &reply
);
4388 reply_size
= get_remote_packet_size ();
4390 /* Invite target to request symbol lookups. */
4392 putpkt ("qSymbol::");
4393 getpkt (&reply
, &reply_size
, 0);
4394 packet_ok (reply
, &remote_protocol_packets
[PACKET_qSymbol
]);
4396 while (startswith (reply
, "qSymbol:"))
4398 struct bound_minimal_symbol sym
;
4401 end
= hex2bin (tmp
, (gdb_byte
*) msg
, strlen (tmp
) / 2);
4403 sym
= lookup_minimal_symbol (msg
, NULL
, NULL
);
4404 if (sym
.minsym
== NULL
)
4405 xsnprintf (msg
, get_remote_packet_size (), "qSymbol::%s", &reply
[8]);
4408 int addr_size
= gdbarch_addr_bit (target_gdbarch ()) / 8;
4409 CORE_ADDR sym_addr
= BMSYMBOL_VALUE_ADDRESS (sym
);
4411 /* If this is a function address, return the start of code
4412 instead of any data function descriptor. */
4413 sym_addr
= gdbarch_convert_from_func_ptr_addr (target_gdbarch (),
4417 xsnprintf (msg
, get_remote_packet_size (), "qSymbol:%s:%s",
4418 phex_nz (sym_addr
, addr_size
), &reply
[8]);
4422 getpkt (&reply
, &reply_size
, 0);
4425 do_cleanups (old_chain
);
4428 static struct serial
*
4429 remote_serial_open (const char *name
)
4431 static int udp_warning
= 0;
4433 /* FIXME: Parsing NAME here is a hack. But we want to warn here instead
4434 of in ser-tcp.c, because it is the remote protocol assuming that the
4435 serial connection is reliable and not the serial connection promising
4437 if (!udp_warning
&& startswith (name
, "udp:"))
4439 warning (_("The remote protocol may be unreliable over UDP.\n"
4440 "Some events may be lost, rendering further debugging "
4445 return serial_open (name
);
4448 /* Inform the target of our permission settings. The permission flags
4449 work without this, but if the target knows the settings, it can do
4450 a couple things. First, it can add its own check, to catch cases
4451 that somehow manage to get by the permissions checks in target
4452 methods. Second, if the target is wired to disallow particular
4453 settings (for instance, a system in the field that is not set up to
4454 be able to stop at a breakpoint), it can object to any unavailable
4458 remote_set_permissions (struct target_ops
*self
)
4460 struct remote_state
*rs
= get_remote_state ();
4462 xsnprintf (rs
->buf
, get_remote_packet_size (), "QAllow:"
4463 "WriteReg:%x;WriteMem:%x;"
4464 "InsertBreak:%x;InsertTrace:%x;"
4465 "InsertFastTrace:%x;Stop:%x",
4466 may_write_registers
, may_write_memory
,
4467 may_insert_breakpoints
, may_insert_tracepoints
,
4468 may_insert_fast_tracepoints
, may_stop
);
4470 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4472 /* If the target didn't like the packet, warn the user. Do not try
4473 to undo the user's settings, that would just be maddening. */
4474 if (strcmp (rs
->buf
, "OK") != 0)
4475 warning (_("Remote refused setting permissions with: %s"), rs
->buf
);
4478 /* This type describes each known response to the qSupported
4480 struct protocol_feature
4482 /* The name of this protocol feature. */
4485 /* The default for this protocol feature. */
4486 enum packet_support default_support
;
4488 /* The function to call when this feature is reported, or after
4489 qSupported processing if the feature is not supported.
4490 The first argument points to this structure. The second
4491 argument indicates whether the packet requested support be
4492 enabled, disabled, or probed (or the default, if this function
4493 is being called at the end of processing and this feature was
4494 not reported). The third argument may be NULL; if not NULL, it
4495 is a NUL-terminated string taken from the packet following
4496 this feature's name and an equals sign. */
4497 void (*func
) (const struct protocol_feature
*, enum packet_support
,
4500 /* The corresponding packet for this feature. Only used if
4501 FUNC is remote_supported_packet. */
4506 remote_supported_packet (const struct protocol_feature
*feature
,
4507 enum packet_support support
,
4508 const char *argument
)
4512 warning (_("Remote qSupported response supplied an unexpected value for"
4513 " \"%s\"."), feature
->name
);
4517 remote_protocol_packets
[feature
->packet
].support
= support
;
4521 remote_packet_size (const struct protocol_feature
*feature
,
4522 enum packet_support support
, const char *value
)
4524 struct remote_state
*rs
= get_remote_state ();
4529 if (support
!= PACKET_ENABLE
)
4532 if (value
== NULL
|| *value
== '\0')
4534 warning (_("Remote target reported \"%s\" without a size."),
4540 packet_size
= strtol (value
, &value_end
, 16);
4541 if (errno
!= 0 || *value_end
!= '\0' || packet_size
< 0)
4543 warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."),
4544 feature
->name
, value
);
4548 /* Record the new maximum packet size. */
4549 rs
->explicit_packet_size
= packet_size
;
4552 static const struct protocol_feature remote_protocol_features
[] = {
4553 { "PacketSize", PACKET_DISABLE
, remote_packet_size
, -1 },
4554 { "qXfer:auxv:read", PACKET_DISABLE
, remote_supported_packet
,
4555 PACKET_qXfer_auxv
},
4556 { "qXfer:exec-file:read", PACKET_DISABLE
, remote_supported_packet
,
4557 PACKET_qXfer_exec_file
},
4558 { "qXfer:features:read", PACKET_DISABLE
, remote_supported_packet
,
4559 PACKET_qXfer_features
},
4560 { "qXfer:libraries:read", PACKET_DISABLE
, remote_supported_packet
,
4561 PACKET_qXfer_libraries
},
4562 { "qXfer:libraries-svr4:read", PACKET_DISABLE
, remote_supported_packet
,
4563 PACKET_qXfer_libraries_svr4
},
4564 { "augmented-libraries-svr4-read", PACKET_DISABLE
,
4565 remote_supported_packet
, PACKET_augmented_libraries_svr4_read_feature
},
4566 { "qXfer:memory-map:read", PACKET_DISABLE
, remote_supported_packet
,
4567 PACKET_qXfer_memory_map
},
4568 { "qXfer:spu:read", PACKET_DISABLE
, remote_supported_packet
,
4569 PACKET_qXfer_spu_read
},
4570 { "qXfer:spu:write", PACKET_DISABLE
, remote_supported_packet
,
4571 PACKET_qXfer_spu_write
},
4572 { "qXfer:osdata:read", PACKET_DISABLE
, remote_supported_packet
,
4573 PACKET_qXfer_osdata
},
4574 { "qXfer:threads:read", PACKET_DISABLE
, remote_supported_packet
,
4575 PACKET_qXfer_threads
},
4576 { "qXfer:traceframe-info:read", PACKET_DISABLE
, remote_supported_packet
,
4577 PACKET_qXfer_traceframe_info
},
4578 { "QPassSignals", PACKET_DISABLE
, remote_supported_packet
,
4579 PACKET_QPassSignals
},
4580 { "QCatchSyscalls", PACKET_DISABLE
, remote_supported_packet
,
4581 PACKET_QCatchSyscalls
},
4582 { "QProgramSignals", PACKET_DISABLE
, remote_supported_packet
,
4583 PACKET_QProgramSignals
},
4584 { "QStartNoAckMode", PACKET_DISABLE
, remote_supported_packet
,
4585 PACKET_QStartNoAckMode
},
4586 { "multiprocess", PACKET_DISABLE
, remote_supported_packet
,
4587 PACKET_multiprocess_feature
},
4588 { "QNonStop", PACKET_DISABLE
, remote_supported_packet
, PACKET_QNonStop
},
4589 { "qXfer:siginfo:read", PACKET_DISABLE
, remote_supported_packet
,
4590 PACKET_qXfer_siginfo_read
},
4591 { "qXfer:siginfo:write", PACKET_DISABLE
, remote_supported_packet
,
4592 PACKET_qXfer_siginfo_write
},
4593 { "ConditionalTracepoints", PACKET_DISABLE
, remote_supported_packet
,
4594 PACKET_ConditionalTracepoints
},
4595 { "ConditionalBreakpoints", PACKET_DISABLE
, remote_supported_packet
,
4596 PACKET_ConditionalBreakpoints
},
4597 { "BreakpointCommands", PACKET_DISABLE
, remote_supported_packet
,
4598 PACKET_BreakpointCommands
},
4599 { "FastTracepoints", PACKET_DISABLE
, remote_supported_packet
,
4600 PACKET_FastTracepoints
},
4601 { "StaticTracepoints", PACKET_DISABLE
, remote_supported_packet
,
4602 PACKET_StaticTracepoints
},
4603 {"InstallInTrace", PACKET_DISABLE
, remote_supported_packet
,
4604 PACKET_InstallInTrace
},
4605 { "DisconnectedTracing", PACKET_DISABLE
, remote_supported_packet
,
4606 PACKET_DisconnectedTracing_feature
},
4607 { "ReverseContinue", PACKET_DISABLE
, remote_supported_packet
,
4609 { "ReverseStep", PACKET_DISABLE
, remote_supported_packet
,
4611 { "TracepointSource", PACKET_DISABLE
, remote_supported_packet
,
4612 PACKET_TracepointSource
},
4613 { "QAllow", PACKET_DISABLE
, remote_supported_packet
,
4615 { "EnableDisableTracepoints", PACKET_DISABLE
, remote_supported_packet
,
4616 PACKET_EnableDisableTracepoints_feature
},
4617 { "qXfer:fdpic:read", PACKET_DISABLE
, remote_supported_packet
,
4618 PACKET_qXfer_fdpic
},
4619 { "qXfer:uib:read", PACKET_DISABLE
, remote_supported_packet
,
4621 { "QDisableRandomization", PACKET_DISABLE
, remote_supported_packet
,
4622 PACKET_QDisableRandomization
},
4623 { "QAgent", PACKET_DISABLE
, remote_supported_packet
, PACKET_QAgent
},
4624 { "QTBuffer:size", PACKET_DISABLE
,
4625 remote_supported_packet
, PACKET_QTBuffer_size
},
4626 { "tracenz", PACKET_DISABLE
, remote_supported_packet
, PACKET_tracenz_feature
},
4627 { "Qbtrace:off", PACKET_DISABLE
, remote_supported_packet
, PACKET_Qbtrace_off
},
4628 { "Qbtrace:bts", PACKET_DISABLE
, remote_supported_packet
, PACKET_Qbtrace_bts
},
4629 { "Qbtrace:pt", PACKET_DISABLE
, remote_supported_packet
, PACKET_Qbtrace_pt
},
4630 { "qXfer:btrace:read", PACKET_DISABLE
, remote_supported_packet
,
4631 PACKET_qXfer_btrace
},
4632 { "qXfer:btrace-conf:read", PACKET_DISABLE
, remote_supported_packet
,
4633 PACKET_qXfer_btrace_conf
},
4634 { "Qbtrace-conf:bts:size", PACKET_DISABLE
, remote_supported_packet
,
4635 PACKET_Qbtrace_conf_bts_size
},
4636 { "swbreak", PACKET_DISABLE
, remote_supported_packet
, PACKET_swbreak_feature
},
4637 { "hwbreak", PACKET_DISABLE
, remote_supported_packet
, PACKET_hwbreak_feature
},
4638 { "fork-events", PACKET_DISABLE
, remote_supported_packet
,
4639 PACKET_fork_event_feature
},
4640 { "vfork-events", PACKET_DISABLE
, remote_supported_packet
,
4641 PACKET_vfork_event_feature
},
4642 { "exec-events", PACKET_DISABLE
, remote_supported_packet
,
4643 PACKET_exec_event_feature
},
4644 { "Qbtrace-conf:pt:size", PACKET_DISABLE
, remote_supported_packet
,
4645 PACKET_Qbtrace_conf_pt_size
},
4646 { "vContSupported", PACKET_DISABLE
, remote_supported_packet
, PACKET_vContSupported
},
4647 { "QThreadEvents", PACKET_DISABLE
, remote_supported_packet
, PACKET_QThreadEvents
},
4648 { "no-resumed", PACKET_DISABLE
, remote_supported_packet
, PACKET_no_resumed
},
4651 static char *remote_support_xml
;
4653 /* Register string appended to "xmlRegisters=" in qSupported query. */
4656 register_remote_support_xml (const char *xml
)
4658 #if defined(HAVE_LIBEXPAT)
4659 if (remote_support_xml
== NULL
)
4660 remote_support_xml
= concat ("xmlRegisters=", xml
, (char *) NULL
);
4663 char *copy
= xstrdup (remote_support_xml
+ 13);
4664 char *p
= strtok (copy
, ",");
4668 if (strcmp (p
, xml
) == 0)
4675 while ((p
= strtok (NULL
, ",")) != NULL
);
4678 remote_support_xml
= reconcat (remote_support_xml
,
4679 remote_support_xml
, ",", xml
,
4686 remote_query_supported_append (char *msg
, const char *append
)
4689 return reconcat (msg
, msg
, ";", append
, (char *) NULL
);
4691 return xstrdup (append
);
4695 remote_query_supported (void)
4697 struct remote_state
*rs
= get_remote_state ();
4700 unsigned char seen
[ARRAY_SIZE (remote_protocol_features
)];
4702 /* The packet support flags are handled differently for this packet
4703 than for most others. We treat an error, a disabled packet, and
4704 an empty response identically: any features which must be reported
4705 to be used will be automatically disabled. An empty buffer
4706 accomplishes this, since that is also the representation for a list
4707 containing no features. */
4710 if (packet_support (PACKET_qSupported
) != PACKET_DISABLE
)
4713 struct cleanup
*old_chain
= make_cleanup (free_current_contents
, &q
);
4715 if (packet_set_cmd_state (PACKET_multiprocess_feature
) != AUTO_BOOLEAN_FALSE
)
4716 q
= remote_query_supported_append (q
, "multiprocess+");
4718 if (packet_set_cmd_state (PACKET_swbreak_feature
) != AUTO_BOOLEAN_FALSE
)
4719 q
= remote_query_supported_append (q
, "swbreak+");
4720 if (packet_set_cmd_state (PACKET_hwbreak_feature
) != AUTO_BOOLEAN_FALSE
)
4721 q
= remote_query_supported_append (q
, "hwbreak+");
4723 q
= remote_query_supported_append (q
, "qRelocInsn+");
4725 if (packet_set_cmd_state (PACKET_fork_event_feature
)
4726 != AUTO_BOOLEAN_FALSE
)
4727 q
= remote_query_supported_append (q
, "fork-events+");
4728 if (packet_set_cmd_state (PACKET_vfork_event_feature
)
4729 != AUTO_BOOLEAN_FALSE
)
4730 q
= remote_query_supported_append (q
, "vfork-events+");
4731 if (packet_set_cmd_state (PACKET_exec_event_feature
)
4732 != AUTO_BOOLEAN_FALSE
)
4733 q
= remote_query_supported_append (q
, "exec-events+");
4735 if (packet_set_cmd_state (PACKET_vContSupported
) != AUTO_BOOLEAN_FALSE
)
4736 q
= remote_query_supported_append (q
, "vContSupported+");
4738 if (packet_set_cmd_state (PACKET_QThreadEvents
) != AUTO_BOOLEAN_FALSE
)
4739 q
= remote_query_supported_append (q
, "QThreadEvents+");
4741 if (packet_set_cmd_state (PACKET_no_resumed
) != AUTO_BOOLEAN_FALSE
)
4742 q
= remote_query_supported_append (q
, "no-resumed+");
4744 /* Keep this one last to work around a gdbserver <= 7.10 bug in
4745 the qSupported:xmlRegisters=i386 handling. */
4746 if (remote_support_xml
!= NULL
)
4747 q
= remote_query_supported_append (q
, remote_support_xml
);
4749 q
= reconcat (q
, "qSupported:", q
, (char *) NULL
);
4752 do_cleanups (old_chain
);
4754 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4756 /* If an error occured, warn, but do not return - just reset the
4757 buffer to empty and go on to disable features. */
4758 if (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_qSupported
])
4761 warning (_("Remote failure reply: %s"), rs
->buf
);
4766 memset (seen
, 0, sizeof (seen
));
4771 enum packet_support is_supported
;
4772 char *p
, *end
, *name_end
, *value
;
4774 /* First separate out this item from the rest of the packet. If
4775 there's another item after this, we overwrite the separator
4776 (terminated strings are much easier to work with). */
4778 end
= strchr (p
, ';');
4781 end
= p
+ strlen (p
);
4791 warning (_("empty item in \"qSupported\" response"));
4796 name_end
= strchr (p
, '=');
4799 /* This is a name=value entry. */
4800 is_supported
= PACKET_ENABLE
;
4801 value
= name_end
+ 1;
4810 is_supported
= PACKET_ENABLE
;
4814 is_supported
= PACKET_DISABLE
;
4818 is_supported
= PACKET_SUPPORT_UNKNOWN
;
4822 warning (_("unrecognized item \"%s\" "
4823 "in \"qSupported\" response"), p
);
4829 for (i
= 0; i
< ARRAY_SIZE (remote_protocol_features
); i
++)
4830 if (strcmp (remote_protocol_features
[i
].name
, p
) == 0)
4832 const struct protocol_feature
*feature
;
4835 feature
= &remote_protocol_features
[i
];
4836 feature
->func (feature
, is_supported
, value
);
4841 /* If we increased the packet size, make sure to increase the global
4842 buffer size also. We delay this until after parsing the entire
4843 qSupported packet, because this is the same buffer we were
4845 if (rs
->buf_size
< rs
->explicit_packet_size
)
4847 rs
->buf_size
= rs
->explicit_packet_size
;
4848 rs
->buf
= (char *) xrealloc (rs
->buf
, rs
->buf_size
);
4851 /* Handle the defaults for unmentioned features. */
4852 for (i
= 0; i
< ARRAY_SIZE (remote_protocol_features
); i
++)
4855 const struct protocol_feature
*feature
;
4857 feature
= &remote_protocol_features
[i
];
4858 feature
->func (feature
, feature
->default_support
, NULL
);
4862 /* Serial QUIT handler for the remote serial descriptor.
4864 Defers handling a Ctrl-C until we're done with the current
4865 command/response packet sequence, unless:
4867 - We're setting up the connection. Don't send a remote interrupt
4868 request, as we're not fully synced yet. Quit immediately
4871 - The target has been resumed in the foreground
4872 (target_terminal_is_ours is false) with a synchronous resume
4873 packet, and we're blocked waiting for the stop reply, thus a
4874 Ctrl-C should be immediately sent to the target.
4876 - We get a second Ctrl-C while still within the same serial read or
4877 write. In that case the serial is seemingly wedged --- offer to
4880 - We see a second Ctrl-C without target response, after having
4881 previously interrupted the target. In that case the target/stub
4882 is probably wedged --- offer to quit/disconnect.
4886 remote_serial_quit_handler (void)
4888 struct remote_state
*rs
= get_remote_state ();
4890 if (check_quit_flag ())
4892 /* If we're starting up, we're not fully synced yet. Quit
4894 if (rs
->starting_up
)
4896 else if (rs
->got_ctrlc_during_io
)
4898 if (query (_("The target is not responding to GDB commands.\n"
4899 "Stop debugging it? ")))
4900 remote_unpush_and_throw ();
4902 /* If ^C has already been sent once, offer to disconnect. */
4903 else if (!target_terminal_is_ours () && rs
->ctrlc_pending_p
)
4905 /* All-stop protocol, and blocked waiting for stop reply. Send
4906 an interrupt request. */
4907 else if (!target_terminal_is_ours () && rs
->waiting_for_stop_reply
)
4908 target_interrupt (inferior_ptid
);
4910 rs
->got_ctrlc_during_io
= 1;
4914 /* Remove any of the remote.c targets from target stack. Upper targets depend
4915 on it so remove them first. */
4918 remote_unpush_target (void)
4920 pop_all_targets_at_and_above (process_stratum
);
4924 remote_unpush_and_throw (void)
4926 remote_unpush_target ();
4927 throw_error (TARGET_CLOSE_ERROR
, _("Disconnected from target."));
4931 remote_open_1 (const char *name
, int from_tty
,
4932 struct target_ops
*target
, int extended_p
)
4934 struct remote_state
*rs
= get_remote_state ();
4937 error (_("To open a remote debug connection, you need to specify what\n"
4938 "serial device is attached to the remote system\n"
4939 "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."));
4941 /* See FIXME above. */
4942 if (!target_async_permitted
)
4943 wait_forever_enabled_p
= 1;
4945 /* If we're connected to a running target, target_preopen will kill it.
4946 Ask this question first, before target_preopen has a chance to kill
4948 if (rs
->remote_desc
!= NULL
&& !have_inferiors ())
4951 && !query (_("Already connected to a remote target. Disconnect? ")))
4952 error (_("Still connected."));
4955 /* Here the possibly existing remote target gets unpushed. */
4956 target_preopen (from_tty
);
4958 /* Make sure we send the passed signals list the next time we resume. */
4959 xfree (rs
->last_pass_packet
);
4960 rs
->last_pass_packet
= NULL
;
4962 /* Make sure we send the program signals list the next time we
4964 xfree (rs
->last_program_signals_packet
);
4965 rs
->last_program_signals_packet
= NULL
;
4967 remote_fileio_reset ();
4968 reopen_exec_file ();
4971 rs
->remote_desc
= remote_serial_open (name
);
4972 if (!rs
->remote_desc
)
4973 perror_with_name (name
);
4975 if (baud_rate
!= -1)
4977 if (serial_setbaudrate (rs
->remote_desc
, baud_rate
))
4979 /* The requested speed could not be set. Error out to
4980 top level after closing remote_desc. Take care to
4981 set remote_desc to NULL to avoid closing remote_desc
4983 serial_close (rs
->remote_desc
);
4984 rs
->remote_desc
= NULL
;
4985 perror_with_name (name
);
4989 serial_setparity (rs
->remote_desc
, serial_parity
);
4990 serial_raw (rs
->remote_desc
);
4992 /* If there is something sitting in the buffer we might take it as a
4993 response to a command, which would be bad. */
4994 serial_flush_input (rs
->remote_desc
);
4998 puts_filtered ("Remote debugging using ");
4999 puts_filtered (name
);
5000 puts_filtered ("\n");
5002 push_target (target
); /* Switch to using remote target now. */
5004 /* Register extra event sources in the event loop. */
5005 remote_async_inferior_event_token
5006 = create_async_event_handler (remote_async_inferior_event_handler
,
5008 rs
->notif_state
= remote_notif_state_allocate ();
5010 /* Reset the target state; these things will be queried either by
5011 remote_query_supported or as they are needed. */
5012 reset_all_packet_configs_support ();
5013 rs
->cached_wait_status
= 0;
5014 rs
->explicit_packet_size
= 0;
5016 rs
->extended
= extended_p
;
5017 rs
->waiting_for_stop_reply
= 0;
5018 rs
->ctrlc_pending_p
= 0;
5019 rs
->got_ctrlc_during_io
= 0;
5021 rs
->general_thread
= not_sent_ptid
;
5022 rs
->continue_thread
= not_sent_ptid
;
5023 rs
->remote_traceframe_number
= -1;
5025 rs
->last_resume_exec_dir
= EXEC_FORWARD
;
5027 /* Probe for ability to use "ThreadInfo" query, as required. */
5028 rs
->use_threadinfo_query
= 1;
5029 rs
->use_threadextra_query
= 1;
5031 readahead_cache_invalidate ();
5033 /* Start out by owning the terminal. */
5034 remote_async_terminal_ours_p
= 1;
5036 if (target_async_permitted
)
5038 /* FIXME: cagney/1999-09-23: During the initial connection it is
5039 assumed that the target is already ready and able to respond to
5040 requests. Unfortunately remote_start_remote() eventually calls
5041 wait_for_inferior() with no timeout. wait_forever_enabled_p gets
5042 around this. Eventually a mechanism that allows
5043 wait_for_inferior() to expect/get timeouts will be
5045 wait_forever_enabled_p
= 0;
5048 /* First delete any symbols previously loaded from shared libraries. */
5049 no_shared_libraries (NULL
, 0);
5052 init_thread_list ();
5054 /* Start the remote connection. If error() or QUIT, discard this
5055 target (we'd otherwise be in an inconsistent state) and then
5056 propogate the error on up the exception chain. This ensures that
5057 the caller doesn't stumble along blindly assuming that the
5058 function succeeded. The CLI doesn't have this problem but other
5059 UI's, such as MI do.
5061 FIXME: cagney/2002-05-19: Instead of re-throwing the exception,
5062 this function should return an error indication letting the
5063 caller restore the previous state. Unfortunately the command
5064 ``target remote'' is directly wired to this function making that
5065 impossible. On a positive note, the CLI side of this problem has
5066 been fixed - the function set_cmd_context() makes it possible for
5067 all the ``target ....'' commands to share a common callback
5068 function. See cli-dump.c. */
5073 remote_start_remote (from_tty
, target
, extended_p
);
5075 CATCH (ex
, RETURN_MASK_ALL
)
5077 /* Pop the partially set up target - unless something else did
5078 already before throwing the exception. */
5079 if (rs
->remote_desc
!= NULL
)
5080 remote_unpush_target ();
5081 if (target_async_permitted
)
5082 wait_forever_enabled_p
= 1;
5083 throw_exception (ex
);
5088 remote_btrace_reset ();
5090 if (target_async_permitted
)
5091 wait_forever_enabled_p
= 1;
5094 /* Detach the specified process. */
5097 remote_detach_pid (int pid
)
5099 struct remote_state
*rs
= get_remote_state ();
5101 if (remote_multi_process_p (rs
))
5102 xsnprintf (rs
->buf
, get_remote_packet_size (), "D;%x", pid
);
5104 strcpy (rs
->buf
, "D");
5107 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5109 if (rs
->buf
[0] == 'O' && rs
->buf
[1] == 'K')
5111 else if (rs
->buf
[0] == '\0')
5112 error (_("Remote doesn't know how to detach"));
5114 error (_("Can't detach process."));
5117 /* This detaches a program to which we previously attached, using
5118 inferior_ptid to identify the process. After this is done, GDB
5119 can be used to debug some other program. We better not have left
5120 any breakpoints in the target program or it'll die when it hits
5124 remote_detach_1 (const char *args
, int from_tty
)
5126 int pid
= ptid_get_pid (inferior_ptid
);
5127 struct remote_state
*rs
= get_remote_state ();
5128 struct thread_info
*tp
= find_thread_ptid (inferior_ptid
);
5132 error (_("Argument given to \"detach\" when remotely debugging."));
5134 if (!target_has_execution
)
5135 error (_("No process to detach from."));
5139 char *exec_file
= get_exec_file (0);
5140 if (exec_file
== NULL
)
5142 printf_unfiltered (_("Detaching from program: %s, %s\n"), exec_file
,
5143 target_pid_to_str (pid_to_ptid (pid
)));
5144 gdb_flush (gdb_stdout
);
5147 /* Tell the remote target to detach. */
5148 remote_detach_pid (pid
);
5150 /* Exit only if this is the only active inferior. */
5151 if (from_tty
&& !rs
->extended
&& number_of_live_inferiors () == 1)
5152 puts_filtered (_("Ending remote debugging.\n"));
5154 /* Check to see if we are detaching a fork parent. Note that if we
5155 are detaching a fork child, tp == NULL. */
5156 is_fork_parent
= (tp
!= NULL
5157 && tp
->pending_follow
.kind
== TARGET_WAITKIND_FORKED
);
5159 /* If doing detach-on-fork, we don't mourn, because that will delete
5160 breakpoints that should be available for the followed inferior. */
5161 if (!is_fork_parent
)
5162 target_mourn_inferior ();
5165 inferior_ptid
= null_ptid
;
5166 detach_inferior (pid
);
5171 remote_detach (struct target_ops
*ops
, const char *args
, int from_tty
)
5173 remote_detach_1 (args
, from_tty
);
5177 extended_remote_detach (struct target_ops
*ops
, const char *args
, int from_tty
)
5179 remote_detach_1 (args
, from_tty
);
5182 /* Target follow-fork function for remote targets. On entry, and
5183 at return, the current inferior is the fork parent.
5185 Note that although this is currently only used for extended-remote,
5186 it is named remote_follow_fork in anticipation of using it for the
5187 remote target as well. */
5190 remote_follow_fork (struct target_ops
*ops
, int follow_child
,
5193 struct remote_state
*rs
= get_remote_state ();
5194 enum target_waitkind kind
= inferior_thread ()->pending_follow
.kind
;
5196 if ((kind
== TARGET_WAITKIND_FORKED
&& remote_fork_event_p (rs
))
5197 || (kind
== TARGET_WAITKIND_VFORKED
&& remote_vfork_event_p (rs
)))
5199 /* When following the parent and detaching the child, we detach
5200 the child here. For the case of following the child and
5201 detaching the parent, the detach is done in the target-
5202 independent follow fork code in infrun.c. We can't use
5203 target_detach when detaching an unfollowed child because
5204 the client side doesn't know anything about the child. */
5205 if (detach_fork
&& !follow_child
)
5207 /* Detach the fork child. */
5211 child_ptid
= inferior_thread ()->pending_follow
.value
.related_pid
;
5212 child_pid
= ptid_get_pid (child_ptid
);
5214 remote_detach_pid (child_pid
);
5215 detach_inferior (child_pid
);
5221 /* Target follow-exec function for remote targets. Save EXECD_PATHNAME
5222 in the program space of the new inferior. On entry and at return the
5223 current inferior is the exec'ing inferior. INF is the new exec'd
5224 inferior, which may be the same as the exec'ing inferior unless
5225 follow-exec-mode is "new". */
5228 remote_follow_exec (struct target_ops
*ops
,
5229 struct inferior
*inf
, char *execd_pathname
)
5231 /* We know that this is a target file name, so if it has the "target:"
5232 prefix we strip it off before saving it in the program space. */
5233 if (is_target_filename (execd_pathname
))
5234 execd_pathname
+= strlen (TARGET_SYSROOT_PREFIX
);
5236 set_pspace_remote_exec_file (inf
->pspace
, execd_pathname
);
5239 /* Same as remote_detach, but don't send the "D" packet; just disconnect. */
5242 remote_disconnect (struct target_ops
*target
, const char *args
, int from_tty
)
5245 error (_("Argument given to \"disconnect\" when remotely debugging."));
5247 /* Make sure we unpush even the extended remote targets. Calling
5248 target_mourn_inferior won't unpush, and remote_mourn won't
5249 unpush if there is more than one inferior left. */
5250 unpush_target (target
);
5251 generic_mourn_inferior ();
5254 puts_filtered ("Ending remote debugging.\n");
5257 /* Attach to the process specified by ARGS. If FROM_TTY is non-zero,
5258 be chatty about it. */
5261 extended_remote_attach (struct target_ops
*target
, const char *args
,
5264 struct remote_state
*rs
= get_remote_state ();
5266 char *wait_status
= NULL
;
5268 pid
= parse_pid_to_attach (args
);
5270 /* Remote PID can be freely equal to getpid, do not check it here the same
5271 way as in other targets. */
5273 if (packet_support (PACKET_vAttach
) == PACKET_DISABLE
)
5274 error (_("This target does not support attaching to a process"));
5278 char *exec_file
= get_exec_file (0);
5281 printf_unfiltered (_("Attaching to program: %s, %s\n"), exec_file
,
5282 target_pid_to_str (pid_to_ptid (pid
)));
5284 printf_unfiltered (_("Attaching to %s\n"),
5285 target_pid_to_str (pid_to_ptid (pid
)));
5287 gdb_flush (gdb_stdout
);
5290 xsnprintf (rs
->buf
, get_remote_packet_size (), "vAttach;%x", pid
);
5292 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5294 switch (packet_ok (rs
->buf
,
5295 &remote_protocol_packets
[PACKET_vAttach
]))
5298 if (!target_is_non_stop_p ())
5300 /* Save the reply for later. */
5301 wait_status
= (char *) alloca (strlen (rs
->buf
) + 1);
5302 strcpy (wait_status
, rs
->buf
);
5304 else if (strcmp (rs
->buf
, "OK") != 0)
5305 error (_("Attaching to %s failed with: %s"),
5306 target_pid_to_str (pid_to_ptid (pid
)),
5309 case PACKET_UNKNOWN
:
5310 error (_("This target does not support attaching to a process"));
5312 error (_("Attaching to %s failed"),
5313 target_pid_to_str (pid_to_ptid (pid
)));
5316 set_current_inferior (remote_add_inferior (0, pid
, 1, 0));
5318 inferior_ptid
= pid_to_ptid (pid
);
5320 if (target_is_non_stop_p ())
5322 struct thread_info
*thread
;
5324 /* Get list of threads. */
5325 remote_update_thread_list (target
);
5327 thread
= first_thread_of_process (pid
);
5329 inferior_ptid
= thread
->ptid
;
5331 inferior_ptid
= pid_to_ptid (pid
);
5333 /* Invalidate our notion of the remote current thread. */
5334 record_currthread (rs
, minus_one_ptid
);
5338 /* Now, if we have thread information, update inferior_ptid. */
5339 inferior_ptid
= remote_current_thread (inferior_ptid
);
5341 /* Add the main thread to the thread list. */
5342 add_thread_silent (inferior_ptid
);
5345 /* Next, if the target can specify a description, read it. We do
5346 this before anything involving memory or registers. */
5347 target_find_description ();
5349 if (!target_is_non_stop_p ())
5351 /* Use the previously fetched status. */
5352 gdb_assert (wait_status
!= NULL
);
5354 if (target_can_async_p ())
5356 struct notif_event
*reply
5357 = remote_notif_parse (¬if_client_stop
, wait_status
);
5359 push_stop_reply ((struct stop_reply
*) reply
);
5365 gdb_assert (wait_status
!= NULL
);
5366 strcpy (rs
->buf
, wait_status
);
5367 rs
->cached_wait_status
= 1;
5371 gdb_assert (wait_status
== NULL
);
5374 /* Implementation of the to_post_attach method. */
5377 extended_remote_post_attach (struct target_ops
*ops
, int pid
)
5379 /* Get text, data & bss offsets. */
5382 /* In certain cases GDB might not have had the chance to start
5383 symbol lookup up until now. This could happen if the debugged
5384 binary is not using shared libraries, the vsyscall page is not
5385 present (on Linux) and the binary itself hadn't changed since the
5386 debugging process was started. */
5387 if (symfile_objfile
!= NULL
)
5388 remote_check_symbols();
5392 /* Check for the availability of vCont. This function should also check
5396 remote_vcont_probe (struct remote_state
*rs
)
5400 strcpy (rs
->buf
, "vCont?");
5402 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5405 /* Make sure that the features we assume are supported. */
5406 if (startswith (buf
, "vCont"))
5409 int support_c
, support_C
;
5411 rs
->supports_vCont
.s
= 0;
5412 rs
->supports_vCont
.S
= 0;
5415 rs
->supports_vCont
.t
= 0;
5416 rs
->supports_vCont
.r
= 0;
5417 while (p
&& *p
== ';')
5420 if (*p
== 's' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
5421 rs
->supports_vCont
.s
= 1;
5422 else if (*p
== 'S' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
5423 rs
->supports_vCont
.S
= 1;
5424 else if (*p
== 'c' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
5426 else if (*p
== 'C' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
5428 else if (*p
== 't' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
5429 rs
->supports_vCont
.t
= 1;
5430 else if (*p
== 'r' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
5431 rs
->supports_vCont
.r
= 1;
5433 p
= strchr (p
, ';');
5436 /* If c, and C are not all supported, we can't use vCont. Clearing
5437 BUF will make packet_ok disable the packet. */
5438 if (!support_c
|| !support_C
)
5442 packet_ok (buf
, &remote_protocol_packets
[PACKET_vCont
]);
5445 /* Helper function for building "vCont" resumptions. Write a
5446 resumption to P. ENDP points to one-passed-the-end of the buffer
5447 we're allowed to write to. Returns BUF+CHARACTERS_WRITTEN. The
5448 thread to be resumed is PTID; STEP and SIGGNAL indicate whether the
5449 resumed thread should be single-stepped and/or signalled. If PTID
5450 equals minus_one_ptid, then all threads are resumed; if PTID
5451 represents a process, then all threads of the process are resumed;
5452 the thread to be stepped and/or signalled is given in the global
5456 append_resumption (char *p
, char *endp
,
5457 ptid_t ptid
, int step
, enum gdb_signal siggnal
)
5459 struct remote_state
*rs
= get_remote_state ();
5461 if (step
&& siggnal
!= GDB_SIGNAL_0
)
5462 p
+= xsnprintf (p
, endp
- p
, ";S%02x", siggnal
);
5464 /* GDB is willing to range step. */
5465 && use_range_stepping
5466 /* Target supports range stepping. */
5467 && rs
->supports_vCont
.r
5468 /* We don't currently support range stepping multiple
5469 threads with a wildcard (though the protocol allows it,
5470 so stubs shouldn't make an active effort to forbid
5472 && !(remote_multi_process_p (rs
) && ptid_is_pid (ptid
)))
5474 struct thread_info
*tp
;
5476 if (ptid_equal (ptid
, minus_one_ptid
))
5478 /* If we don't know about the target thread's tid, then
5479 we're resuming magic_null_ptid (see caller). */
5480 tp
= find_thread_ptid (magic_null_ptid
);
5483 tp
= find_thread_ptid (ptid
);
5484 gdb_assert (tp
!= NULL
);
5486 if (tp
->control
.may_range_step
)
5488 int addr_size
= gdbarch_addr_bit (target_gdbarch ()) / 8;
5490 p
+= xsnprintf (p
, endp
- p
, ";r%s,%s",
5491 phex_nz (tp
->control
.step_range_start
,
5493 phex_nz (tp
->control
.step_range_end
,
5497 p
+= xsnprintf (p
, endp
- p
, ";s");
5500 p
+= xsnprintf (p
, endp
- p
, ";s");
5501 else if (siggnal
!= GDB_SIGNAL_0
)
5502 p
+= xsnprintf (p
, endp
- p
, ";C%02x", siggnal
);
5504 p
+= xsnprintf (p
, endp
- p
, ";c");
5506 if (remote_multi_process_p (rs
) && ptid_is_pid (ptid
))
5510 /* All (-1) threads of process. */
5511 nptid
= ptid_build (ptid_get_pid (ptid
), -1, 0);
5513 p
+= xsnprintf (p
, endp
- p
, ":");
5514 p
= write_ptid (p
, endp
, nptid
);
5516 else if (!ptid_equal (ptid
, minus_one_ptid
))
5518 p
+= xsnprintf (p
, endp
- p
, ":");
5519 p
= write_ptid (p
, endp
, ptid
);
5525 /* Clear the thread's private info on resume. */
5528 resume_clear_thread_private_info (struct thread_info
*thread
)
5530 if (thread
->priv
!= NULL
)
5532 thread
->priv
->stop_reason
= TARGET_STOPPED_BY_NO_REASON
;
5533 thread
->priv
->watch_data_address
= 0;
5537 /* Append a vCont continue-with-signal action for threads that have a
5538 non-zero stop signal. */
5541 append_pending_thread_resumptions (char *p
, char *endp
, ptid_t ptid
)
5543 struct thread_info
*thread
;
5545 ALL_NON_EXITED_THREADS (thread
)
5546 if (ptid_match (thread
->ptid
, ptid
)
5547 && !ptid_equal (inferior_ptid
, thread
->ptid
)
5548 && thread
->suspend
.stop_signal
!= GDB_SIGNAL_0
)
5550 p
= append_resumption (p
, endp
, thread
->ptid
,
5551 0, thread
->suspend
.stop_signal
);
5552 thread
->suspend
.stop_signal
= GDB_SIGNAL_0
;
5553 resume_clear_thread_private_info (thread
);
5559 /* Resume the remote inferior by using a "vCont" packet. The thread
5560 to be resumed is PTID; STEP and SIGGNAL indicate whether the
5561 resumed thread should be single-stepped and/or signalled. If PTID
5562 equals minus_one_ptid, then all threads are resumed; the thread to
5563 be stepped and/or signalled is given in the global INFERIOR_PTID.
5564 This function returns non-zero iff it resumes the inferior.
5566 This function issues a strict subset of all possible vCont commands at the
5570 remote_vcont_resume (ptid_t ptid
, int step
, enum gdb_signal siggnal
)
5572 struct remote_state
*rs
= get_remote_state ();
5576 if (packet_support (PACKET_vCont
) == PACKET_SUPPORT_UNKNOWN
)
5577 remote_vcont_probe (rs
);
5579 if (packet_support (PACKET_vCont
) == PACKET_DISABLE
)
5583 endp
= rs
->buf
+ get_remote_packet_size ();
5585 /* If we could generate a wider range of packets, we'd have to worry
5586 about overflowing BUF. Should there be a generic
5587 "multi-part-packet" packet? */
5589 p
+= xsnprintf (p
, endp
- p
, "vCont");
5591 if (ptid_equal (ptid
, magic_null_ptid
))
5593 /* MAGIC_NULL_PTID means that we don't have any active threads,
5594 so we don't have any TID numbers the inferior will
5595 understand. Make sure to only send forms that do not specify
5597 append_resumption (p
, endp
, minus_one_ptid
, step
, siggnal
);
5599 else if (ptid_equal (ptid
, minus_one_ptid
) || ptid_is_pid (ptid
))
5601 /* Resume all threads (of all processes, or of a single
5602 process), with preference for INFERIOR_PTID. This assumes
5603 inferior_ptid belongs to the set of all threads we are about
5605 if (step
|| siggnal
!= GDB_SIGNAL_0
)
5607 /* Step inferior_ptid, with or without signal. */
5608 p
= append_resumption (p
, endp
, inferior_ptid
, step
, siggnal
);
5611 /* Also pass down any pending signaled resumption for other
5612 threads not the current. */
5613 p
= append_pending_thread_resumptions (p
, endp
, ptid
);
5615 /* And continue others without a signal. */
5616 append_resumption (p
, endp
, ptid
, /*step=*/ 0, GDB_SIGNAL_0
);
5620 /* Scheduler locking; resume only PTID. */
5621 append_resumption (p
, endp
, ptid
, step
, siggnal
);
5624 gdb_assert (strlen (rs
->buf
) < get_remote_packet_size ());
5627 if (target_is_non_stop_p ())
5629 /* In non-stop, the stub replies to vCont with "OK". The stop
5630 reply will be reported asynchronously by means of a `%Stop'
5632 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5633 if (strcmp (rs
->buf
, "OK") != 0)
5634 error (_("Unexpected vCont reply in non-stop mode: %s"), rs
->buf
);
5640 /* Tell the remote machine to resume. */
5643 remote_resume (struct target_ops
*ops
,
5644 ptid_t ptid
, int step
, enum gdb_signal siggnal
)
5646 struct remote_state
*rs
= get_remote_state ();
5648 struct thread_info
*thread
;
5650 /* In all-stop, we can't mark REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN
5651 (explained in remote-notif.c:handle_notification) so
5652 remote_notif_process is not called. We need find a place where
5653 it is safe to start a 'vNotif' sequence. It is good to do it
5654 before resuming inferior, because inferior was stopped and no RSP
5655 traffic at that moment. */
5656 if (!target_is_non_stop_p ())
5657 remote_notif_process (rs
->notif_state
, ¬if_client_stop
);
5659 rs
->last_sent_signal
= siggnal
;
5660 rs
->last_sent_step
= step
;
5662 rs
->last_resume_exec_dir
= execution_direction
;
5664 /* The vCont packet doesn't need to specify threads via Hc. */
5665 /* No reverse support (yet) for vCont. */
5666 if (execution_direction
!= EXEC_REVERSE
)
5667 if (remote_vcont_resume (ptid
, step
, siggnal
))
5670 /* All other supported resume packets do use Hc, so set the continue
5672 if (ptid_equal (ptid
, minus_one_ptid
))
5673 set_continue_thread (any_thread_ptid
);
5675 set_continue_thread (ptid
);
5677 ALL_NON_EXITED_THREADS (thread
)
5678 resume_clear_thread_private_info (thread
);
5681 if (execution_direction
== EXEC_REVERSE
)
5683 /* We don't pass signals to the target in reverse exec mode. */
5684 if (info_verbose
&& siggnal
!= GDB_SIGNAL_0
)
5685 warning (_(" - Can't pass signal %d to target in reverse: ignored."),
5688 if (step
&& packet_support (PACKET_bs
) == PACKET_DISABLE
)
5689 error (_("Remote reverse-step not supported."));
5690 if (!step
&& packet_support (PACKET_bc
) == PACKET_DISABLE
)
5691 error (_("Remote reverse-continue not supported."));
5693 strcpy (buf
, step
? "bs" : "bc");
5695 else if (siggnal
!= GDB_SIGNAL_0
)
5697 buf
[0] = step
? 'S' : 'C';
5698 buf
[1] = tohex (((int) siggnal
>> 4) & 0xf);
5699 buf
[2] = tohex (((int) siggnal
) & 0xf);
5703 strcpy (buf
, step
? "s" : "c");
5708 /* We are about to start executing the inferior, let's register it
5709 with the event loop. NOTE: this is the one place where all the
5710 execution commands end up. We could alternatively do this in each
5711 of the execution commands in infcmd.c. */
5712 /* FIXME: ezannoni 1999-09-28: We may need to move this out of here
5713 into infcmd.c in order to allow inferior function calls to work
5714 NOT asynchronously. */
5715 if (target_can_async_p ())
5718 /* We've just told the target to resume. The remote server will
5719 wait for the inferior to stop, and then send a stop reply. In
5720 the mean time, we can't start another command/query ourselves
5721 because the stub wouldn't be ready to process it. This applies
5722 only to the base all-stop protocol, however. In non-stop (which
5723 only supports vCont), the stub replies with an "OK", and is
5724 immediate able to process further serial input. */
5725 if (!target_is_non_stop_p ())
5726 rs
->waiting_for_stop_reply
= 1;
5730 /* Non-stop version of target_stop. Uses `vCont;t' to stop a remote
5731 thread, all threads of a remote process, or all threads of all
5735 remote_stop_ns (ptid_t ptid
)
5737 struct remote_state
*rs
= get_remote_state ();
5739 char *endp
= rs
->buf
+ get_remote_packet_size ();
5741 if (packet_support (PACKET_vCont
) == PACKET_SUPPORT_UNKNOWN
)
5742 remote_vcont_probe (rs
);
5744 if (!rs
->supports_vCont
.t
)
5745 error (_("Remote server does not support stopping threads"));
5747 if (ptid_equal (ptid
, minus_one_ptid
)
5748 || (!remote_multi_process_p (rs
) && ptid_is_pid (ptid
)))
5749 p
+= xsnprintf (p
, endp
- p
, "vCont;t");
5754 p
+= xsnprintf (p
, endp
- p
, "vCont;t:");
5756 if (ptid_is_pid (ptid
))
5757 /* All (-1) threads of process. */
5758 nptid
= ptid_build (ptid_get_pid (ptid
), -1, 0);
5761 /* Small optimization: if we already have a stop reply for
5762 this thread, no use in telling the stub we want this
5764 if (peek_stop_reply (ptid
))
5770 write_ptid (p
, endp
, nptid
);
5773 /* In non-stop, we get an immediate OK reply. The stop reply will
5774 come in asynchronously by notification. */
5776 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5777 if (strcmp (rs
->buf
, "OK") != 0)
5778 error (_("Stopping %s failed: %s"), target_pid_to_str (ptid
), rs
->buf
);
5781 /* All-stop version of target_interrupt. Sends a break or a ^C to
5782 interrupt the remote target. It is undefined which thread of which
5783 process reports the interrupt. */
5786 remote_interrupt_as (void)
5788 struct remote_state
*rs
= get_remote_state ();
5790 rs
->ctrlc_pending_p
= 1;
5792 /* If the inferior is stopped already, but the core didn't know
5793 about it yet, just ignore the request. The cached wait status
5794 will be collected in remote_wait. */
5795 if (rs
->cached_wait_status
)
5798 /* Send interrupt_sequence to remote target. */
5799 send_interrupt_sequence ();
5802 /* Non-stop version of target_interrupt. Uses `vCtrlC' to interrupt
5803 the remote target. It is undefined which thread of which process
5804 reports the interrupt. Throws an error if the packet is not
5805 supported by the server. */
5808 remote_interrupt_ns (void)
5810 struct remote_state
*rs
= get_remote_state ();
5812 char *endp
= rs
->buf
+ get_remote_packet_size ();
5814 xsnprintf (p
, endp
- p
, "vCtrlC");
5816 /* In non-stop, we get an immediate OK reply. The stop reply will
5817 come in asynchronously by notification. */
5819 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5821 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_vCtrlC
]))
5825 case PACKET_UNKNOWN
:
5826 error (_("No support for interrupting the remote target."));
5828 error (_("Interrupting target failed: %s"), rs
->buf
);
5832 /* Implement the to_stop function for the remote targets. */
5835 remote_stop (struct target_ops
*self
, ptid_t ptid
)
5838 fprintf_unfiltered (gdb_stdlog
, "remote_stop called\n");
5840 if (target_is_non_stop_p ())
5841 remote_stop_ns (ptid
);
5844 /* We don't currently have a way to transparently pause the
5845 remote target in all-stop mode. Interrupt it instead. */
5846 remote_interrupt_as ();
5850 /* Implement the to_interrupt function for the remote targets. */
5853 remote_interrupt (struct target_ops
*self
, ptid_t ptid
)
5855 struct remote_state
*rs
= get_remote_state ();
5858 fprintf_unfiltered (gdb_stdlog
, "remote_interrupt called\n");
5860 if (target_is_non_stop_p ())
5861 remote_interrupt_ns ();
5863 remote_interrupt_as ();
5866 /* Implement the to_pass_ctrlc function for the remote targets. */
5869 remote_pass_ctrlc (struct target_ops
*self
)
5871 struct remote_state
*rs
= get_remote_state ();
5874 fprintf_unfiltered (gdb_stdlog
, "remote_pass_ctrlc called\n");
5876 /* If we're starting up, we're not fully synced yet. Quit
5878 if (rs
->starting_up
)
5880 /* If ^C has already been sent once, offer to disconnect. */
5881 else if (rs
->ctrlc_pending_p
)
5884 target_interrupt (inferior_ptid
);
5887 /* Ask the user what to do when an interrupt is received. */
5890 interrupt_query (void)
5892 struct remote_state
*rs
= get_remote_state ();
5894 if (rs
->waiting_for_stop_reply
&& rs
->ctrlc_pending_p
)
5896 if (query (_("The target is not responding to interrupt requests.\n"
5897 "Stop debugging it? ")))
5899 remote_unpush_target ();
5900 throw_error (TARGET_CLOSE_ERROR
, _("Disconnected from target."));
5905 if (query (_("Interrupted while waiting for the program.\n"
5906 "Give up waiting? ")))
5911 /* Enable/disable target terminal ownership. Most targets can use
5912 terminal groups to control terminal ownership. Remote targets are
5913 different in that explicit transfer of ownership to/from GDB/target
5917 remote_terminal_inferior (struct target_ops
*self
)
5919 /* FIXME: cagney/1999-09-27: Make calls to target_terminal_*()
5920 idempotent. The event-loop GDB talking to an asynchronous target
5921 with a synchronous command calls this function from both
5922 event-top.c and infrun.c/infcmd.c. Once GDB stops trying to
5923 transfer the terminal to the target when it shouldn't this guard
5925 if (!remote_async_terminal_ours_p
)
5927 remote_async_terminal_ours_p
= 0;
5928 /* NOTE: At this point we could also register our selves as the
5929 recipient of all input. Any characters typed could then be
5930 passed on down to the target. */
5934 remote_terminal_ours (struct target_ops
*self
)
5936 /* See FIXME in remote_terminal_inferior. */
5937 if (remote_async_terminal_ours_p
)
5939 remote_async_terminal_ours_p
= 1;
5943 remote_console_output (char *msg
)
5947 for (p
= msg
; p
[0] && p
[1]; p
+= 2)
5950 char c
= fromhex (p
[0]) * 16 + fromhex (p
[1]);
5954 fputs_unfiltered (tb
, gdb_stdtarg
);
5956 gdb_flush (gdb_stdtarg
);
5959 typedef struct cached_reg
5962 gdb_byte data
[MAX_REGISTER_SIZE
];
5965 DEF_VEC_O(cached_reg_t
);
5967 typedef struct stop_reply
5969 struct notif_event base
;
5971 /* The identifier of the thread about this event */
5974 /* The remote state this event is associated with. When the remote
5975 connection, represented by a remote_state object, is closed,
5976 all the associated stop_reply events should be released. */
5977 struct remote_state
*rs
;
5979 struct target_waitstatus ws
;
5981 /* Expedited registers. This makes remote debugging a bit more
5982 efficient for those targets that provide critical registers as
5983 part of their normal status mechanism (as another roundtrip to
5984 fetch them is avoided). */
5985 VEC(cached_reg_t
) *regcache
;
5987 enum target_stop_reason stop_reason
;
5989 CORE_ADDR watch_data_address
;
5994 DECLARE_QUEUE_P (stop_reply_p
);
5995 DEFINE_QUEUE_P (stop_reply_p
);
5996 /* The list of already fetched and acknowledged stop events. This
5997 queue is used for notification Stop, and other notifications
5998 don't need queue for their events, because the notification events
5999 of Stop can't be consumed immediately, so that events should be
6000 queued first, and be consumed by remote_wait_{ns,as} one per
6001 time. Other notifications can consume their events immediately,
6002 so queue is not needed for them. */
6003 static QUEUE (stop_reply_p
) *stop_reply_queue
;
6006 stop_reply_xfree (struct stop_reply
*r
)
6008 notif_event_xfree ((struct notif_event
*) r
);
6011 /* Return the length of the stop reply queue. */
6014 stop_reply_queue_length (void)
6016 return QUEUE_length (stop_reply_p
, stop_reply_queue
);
6020 remote_notif_stop_parse (struct notif_client
*self
, char *buf
,
6021 struct notif_event
*event
)
6023 remote_parse_stop_reply (buf
, (struct stop_reply
*) event
);
6027 remote_notif_stop_ack (struct notif_client
*self
, char *buf
,
6028 struct notif_event
*event
)
6030 struct stop_reply
*stop_reply
= (struct stop_reply
*) event
;
6033 putpkt ((char *) self
->ack_command
);
6035 if (stop_reply
->ws
.kind
== TARGET_WAITKIND_IGNORE
)
6036 /* We got an unknown stop reply. */
6037 error (_("Unknown stop reply"));
6039 push_stop_reply (stop_reply
);
6043 remote_notif_stop_can_get_pending_events (struct notif_client
*self
)
6045 /* We can't get pending events in remote_notif_process for
6046 notification stop, and we have to do this in remote_wait_ns
6047 instead. If we fetch all queued events from stub, remote stub
6048 may exit and we have no chance to process them back in
6050 mark_async_event_handler (remote_async_inferior_event_token
);
6055 stop_reply_dtr (struct notif_event
*event
)
6057 struct stop_reply
*r
= (struct stop_reply
*) event
;
6059 VEC_free (cached_reg_t
, r
->regcache
);
6062 static struct notif_event
*
6063 remote_notif_stop_alloc_reply (void)
6065 /* We cast to a pointer to the "base class". */
6066 struct notif_event
*r
= (struct notif_event
*) XNEW (struct stop_reply
);
6068 r
->dtr
= stop_reply_dtr
;
6073 /* A client of notification Stop. */
6075 struct notif_client notif_client_stop
=
6079 remote_notif_stop_parse
,
6080 remote_notif_stop_ack
,
6081 remote_notif_stop_can_get_pending_events
,
6082 remote_notif_stop_alloc_reply
,
6086 /* A parameter to pass data in and out. */
6088 struct queue_iter_param
6091 struct stop_reply
*output
;
6094 /* Determine if THREAD is a pending fork parent thread. ARG contains
6095 the pid of the process that owns the threads we want to check, or
6096 -1 if we want to check all threads. */
6099 is_pending_fork_parent (struct target_waitstatus
*ws
, int event_pid
,
6102 if (ws
->kind
== TARGET_WAITKIND_FORKED
6103 || ws
->kind
== TARGET_WAITKIND_VFORKED
)
6105 if (event_pid
== -1 || event_pid
== ptid_get_pid (thread_ptid
))
6112 /* Check whether EVENT is a fork event, and if it is, remove the
6113 fork child from the context list passed in DATA. */
6116 remove_child_of_pending_fork (QUEUE (stop_reply_p
) *q
,
6117 QUEUE_ITER (stop_reply_p
) *iter
,
6121 struct queue_iter_param
*param
= (struct queue_iter_param
*) data
;
6122 struct threads_listing_context
*context
6123 = (struct threads_listing_context
*) param
->input
;
6125 if (event
->ws
.kind
== TARGET_WAITKIND_FORKED
6126 || event
->ws
.kind
== TARGET_WAITKIND_VFORKED
6127 || event
->ws
.kind
== TARGET_WAITKIND_THREAD_EXITED
)
6128 threads_listing_context_remove (&event
->ws
, context
);
6133 /* If CONTEXT contains any fork child threads that have not been
6134 reported yet, remove them from the CONTEXT list. If such a
6135 thread exists it is because we are stopped at a fork catchpoint
6136 and have not yet called follow_fork, which will set up the
6137 host-side data structures for the new process. */
6140 remove_new_fork_children (struct threads_listing_context
*context
)
6142 struct thread_info
* thread
;
6144 struct notif_client
*notif
= ¬if_client_stop
;
6145 struct queue_iter_param param
;
6147 /* For any threads stopped at a fork event, remove the corresponding
6148 fork child threads from the CONTEXT list. */
6149 ALL_NON_EXITED_THREADS (thread
)
6151 struct target_waitstatus
*ws
;
6153 if (thread
->suspend
.waitstatus_pending_p
)
6154 ws
= &thread
->suspend
.waitstatus
;
6156 ws
= &thread
->pending_follow
;
6158 if (is_pending_fork_parent (ws
, pid
, thread
->ptid
))
6160 threads_listing_context_remove (ws
, context
);
6164 /* Check for any pending fork events (not reported or processed yet)
6165 in process PID and remove those fork child threads from the
6166 CONTEXT list as well. */
6167 remote_notif_get_pending_events (notif
);
6168 param
.input
= context
;
6169 param
.output
= NULL
;
6170 QUEUE_iterate (stop_reply_p
, stop_reply_queue
,
6171 remove_child_of_pending_fork
, ¶m
);
6174 /* Remove stop replies in the queue if its pid is equal to the given
6178 remove_stop_reply_for_inferior (QUEUE (stop_reply_p
) *q
,
6179 QUEUE_ITER (stop_reply_p
) *iter
,
6183 struct queue_iter_param
*param
= (struct queue_iter_param
*) data
;
6184 struct inferior
*inf
= (struct inferior
*) param
->input
;
6186 if (ptid_get_pid (event
->ptid
) == inf
->pid
)
6188 stop_reply_xfree (event
);
6189 QUEUE_remove_elem (stop_reply_p
, q
, iter
);
6195 /* Discard all pending stop replies of inferior INF. */
6198 discard_pending_stop_replies (struct inferior
*inf
)
6200 struct queue_iter_param param
;
6201 struct stop_reply
*reply
;
6202 struct remote_state
*rs
= get_remote_state ();
6203 struct remote_notif_state
*rns
= rs
->notif_state
;
6205 /* This function can be notified when an inferior exists. When the
6206 target is not remote, the notification state is NULL. */
6207 if (rs
->remote_desc
== NULL
)
6210 reply
= (struct stop_reply
*) rns
->pending_event
[notif_client_stop
.id
];
6212 /* Discard the in-flight notification. */
6213 if (reply
!= NULL
&& ptid_get_pid (reply
->ptid
) == inf
->pid
)
6215 stop_reply_xfree (reply
);
6216 rns
->pending_event
[notif_client_stop
.id
] = NULL
;
6220 param
.output
= NULL
;
6221 /* Discard the stop replies we have already pulled with
6223 QUEUE_iterate (stop_reply_p
, stop_reply_queue
,
6224 remove_stop_reply_for_inferior
, ¶m
);
6227 /* If its remote state is equal to the given remote state,
6228 remove EVENT from the stop reply queue. */
6231 remove_stop_reply_of_remote_state (QUEUE (stop_reply_p
) *q
,
6232 QUEUE_ITER (stop_reply_p
) *iter
,
6236 struct queue_iter_param
*param
= (struct queue_iter_param
*) data
;
6237 struct remote_state
*rs
= (struct remote_state
*) param
->input
;
6239 if (event
->rs
== rs
)
6241 stop_reply_xfree (event
);
6242 QUEUE_remove_elem (stop_reply_p
, q
, iter
);
6248 /* Discard the stop replies for RS in stop_reply_queue. */
6251 discard_pending_stop_replies_in_queue (struct remote_state
*rs
)
6253 struct queue_iter_param param
;
6256 param
.output
= NULL
;
6257 /* Discard the stop replies we have already pulled with
6259 QUEUE_iterate (stop_reply_p
, stop_reply_queue
,
6260 remove_stop_reply_of_remote_state
, ¶m
);
6263 /* A parameter to pass data in and out. */
6266 remote_notif_remove_once_on_match (QUEUE (stop_reply_p
) *q
,
6267 QUEUE_ITER (stop_reply_p
) *iter
,
6271 struct queue_iter_param
*param
= (struct queue_iter_param
*) data
;
6272 ptid_t
*ptid
= (ptid_t
*) param
->input
;
6274 if (ptid_match (event
->ptid
, *ptid
))
6276 param
->output
= event
;
6277 QUEUE_remove_elem (stop_reply_p
, q
, iter
);
6284 /* Remove the first reply in 'stop_reply_queue' which matches
6287 static struct stop_reply
*
6288 remote_notif_remove_queued_reply (ptid_t ptid
)
6290 struct queue_iter_param param
;
6292 param
.input
= &ptid
;
6293 param
.output
= NULL
;
6295 QUEUE_iterate (stop_reply_p
, stop_reply_queue
,
6296 remote_notif_remove_once_on_match
, ¶m
);
6298 fprintf_unfiltered (gdb_stdlog
,
6299 "notif: discard queued event: 'Stop' in %s\n",
6300 target_pid_to_str (ptid
));
6302 return param
.output
;
6305 /* Look for a queued stop reply belonging to PTID. If one is found,
6306 remove it from the queue, and return it. Returns NULL if none is
6307 found. If there are still queued events left to process, tell the
6308 event loop to get back to target_wait soon. */
6310 static struct stop_reply
*
6311 queued_stop_reply (ptid_t ptid
)
6313 struct stop_reply
*r
= remote_notif_remove_queued_reply (ptid
);
6315 if (!QUEUE_is_empty (stop_reply_p
, stop_reply_queue
))
6316 /* There's still at least an event left. */
6317 mark_async_event_handler (remote_async_inferior_event_token
);
6322 /* Push a fully parsed stop reply in the stop reply queue. Since we
6323 know that we now have at least one queued event left to pass to the
6324 core side, tell the event loop to get back to target_wait soon. */
6327 push_stop_reply (struct stop_reply
*new_event
)
6329 QUEUE_enque (stop_reply_p
, stop_reply_queue
, new_event
);
6332 fprintf_unfiltered (gdb_stdlog
,
6333 "notif: push 'Stop' %s to queue %d\n",
6334 target_pid_to_str (new_event
->ptid
),
6335 QUEUE_length (stop_reply_p
,
6338 mark_async_event_handler (remote_async_inferior_event_token
);
6342 stop_reply_match_ptid_and_ws (QUEUE (stop_reply_p
) *q
,
6343 QUEUE_ITER (stop_reply_p
) *iter
,
6344 struct stop_reply
*event
,
6347 ptid_t
*ptid
= (ptid_t
*) data
;
6349 return !(ptid_equal (*ptid
, event
->ptid
)
6350 && event
->ws
.kind
== TARGET_WAITKIND_STOPPED
);
6353 /* Returns true if we have a stop reply for PTID. */
6356 peek_stop_reply (ptid_t ptid
)
6358 return !QUEUE_iterate (stop_reply_p
, stop_reply_queue
,
6359 stop_reply_match_ptid_and_ws
, &ptid
);
6362 /* Helper for remote_parse_stop_reply. Return nonzero if the substring
6363 starting with P and ending with PEND matches PREFIX. */
6366 strprefix (const char *p
, const char *pend
, const char *prefix
)
6368 for ( ; p
< pend
; p
++, prefix
++)
6371 return *prefix
== '\0';
6374 /* Parse the stop reply in BUF. Either the function succeeds, and the
6375 result is stored in EVENT, or throws an error. */
6378 remote_parse_stop_reply (char *buf
, struct stop_reply
*event
)
6380 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6385 event
->ptid
= null_ptid
;
6386 event
->rs
= get_remote_state ();
6387 event
->ws
.kind
= TARGET_WAITKIND_IGNORE
;
6388 event
->ws
.value
.integer
= 0;
6389 event
->stop_reason
= TARGET_STOPPED_BY_NO_REASON
;
6390 event
->regcache
= NULL
;
6395 case 'T': /* Status with PC, SP, FP, ... */
6396 /* Expedited reply, containing Signal, {regno, reg} repeat. */
6397 /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where
6399 n... = register number
6400 r... = register contents
6403 p
= &buf
[3]; /* after Txx */
6409 p1
= strchr (p
, ':');
6411 error (_("Malformed packet(a) (missing colon): %s\n\
6415 error (_("Malformed packet(a) (missing register number): %s\n\
6419 /* Some "registers" are actually extended stop information.
6420 Note if you're adding a new entry here: GDB 7.9 and
6421 earlier assume that all register "numbers" that start
6422 with an hex digit are real register numbers. Make sure
6423 the server only sends such a packet if it knows the
6424 client understands it. */
6426 if (strprefix (p
, p1
, "thread"))
6427 event
->ptid
= read_ptid (++p1
, &p
);
6428 else if (strprefix (p
, p1
, "syscall_entry"))
6432 event
->ws
.kind
= TARGET_WAITKIND_SYSCALL_ENTRY
;
6433 p
= unpack_varlen_hex (++p1
, &sysno
);
6434 event
->ws
.value
.syscall_number
= (int) sysno
;
6436 else if (strprefix (p
, p1
, "syscall_return"))
6440 event
->ws
.kind
= TARGET_WAITKIND_SYSCALL_RETURN
;
6441 p
= unpack_varlen_hex (++p1
, &sysno
);
6442 event
->ws
.value
.syscall_number
= (int) sysno
;
6444 else if (strprefix (p
, p1
, "watch")
6445 || strprefix (p
, p1
, "rwatch")
6446 || strprefix (p
, p1
, "awatch"))
6448 event
->stop_reason
= TARGET_STOPPED_BY_WATCHPOINT
;
6449 p
= unpack_varlen_hex (++p1
, &addr
);
6450 event
->watch_data_address
= (CORE_ADDR
) addr
;
6452 else if (strprefix (p
, p1
, "swbreak"))
6454 event
->stop_reason
= TARGET_STOPPED_BY_SW_BREAKPOINT
;
6456 /* Make sure the stub doesn't forget to indicate support
6458 if (packet_support (PACKET_swbreak_feature
) != PACKET_ENABLE
)
6459 error (_("Unexpected swbreak stop reason"));
6461 /* The value part is documented as "must be empty",
6462 though we ignore it, in case we ever decide to make
6463 use of it in a backward compatible way. */
6464 p
= strchrnul (p1
+ 1, ';');
6466 else if (strprefix (p
, p1
, "hwbreak"))
6468 event
->stop_reason
= TARGET_STOPPED_BY_HW_BREAKPOINT
;
6470 /* Make sure the stub doesn't forget to indicate support
6472 if (packet_support (PACKET_hwbreak_feature
) != PACKET_ENABLE
)
6473 error (_("Unexpected hwbreak stop reason"));
6476 p
= strchrnul (p1
+ 1, ';');
6478 else if (strprefix (p
, p1
, "library"))
6480 event
->ws
.kind
= TARGET_WAITKIND_LOADED
;
6481 p
= strchrnul (p1
+ 1, ';');
6483 else if (strprefix (p
, p1
, "replaylog"))
6485 event
->ws
.kind
= TARGET_WAITKIND_NO_HISTORY
;
6486 /* p1 will indicate "begin" or "end", but it makes
6487 no difference for now, so ignore it. */
6488 p
= strchrnul (p1
+ 1, ';');
6490 else if (strprefix (p
, p1
, "core"))
6494 p
= unpack_varlen_hex (++p1
, &c
);
6497 else if (strprefix (p
, p1
, "fork"))
6499 event
->ws
.value
.related_pid
= read_ptid (++p1
, &p
);
6500 event
->ws
.kind
= TARGET_WAITKIND_FORKED
;
6502 else if (strprefix (p
, p1
, "vfork"))
6504 event
->ws
.value
.related_pid
= read_ptid (++p1
, &p
);
6505 event
->ws
.kind
= TARGET_WAITKIND_VFORKED
;
6507 else if (strprefix (p
, p1
, "vforkdone"))
6509 event
->ws
.kind
= TARGET_WAITKIND_VFORK_DONE
;
6510 p
= strchrnul (p1
+ 1, ';');
6512 else if (strprefix (p
, p1
, "exec"))
6515 char pathname
[PATH_MAX
];
6518 /* Determine the length of the execd pathname. */
6519 p
= unpack_varlen_hex (++p1
, &ignored
);
6520 pathlen
= (p
- p1
) / 2;
6522 /* Save the pathname for event reporting and for
6523 the next run command. */
6524 hex2bin (p1
, (gdb_byte
*) pathname
, pathlen
);
6525 pathname
[pathlen
] = '\0';
6527 /* This is freed during event handling. */
6528 event
->ws
.value
.execd_pathname
= xstrdup (pathname
);
6529 event
->ws
.kind
= TARGET_WAITKIND_EXECD
;
6531 /* Skip the registers included in this packet, since
6532 they may be for an architecture different from the
6533 one used by the original program. */
6536 else if (strprefix (p
, p1
, "create"))
6538 event
->ws
.kind
= TARGET_WAITKIND_THREAD_CREATED
;
6539 p
= strchrnul (p1
+ 1, ';');
6548 p
= strchrnul (p1
+ 1, ';');
6553 /* Maybe a real ``P'' register number. */
6554 p_temp
= unpack_varlen_hex (p
, &pnum
);
6555 /* If the first invalid character is the colon, we got a
6556 register number. Otherwise, it's an unknown stop
6560 struct packet_reg
*reg
= packet_reg_from_pnum (rsa
, pnum
);
6561 cached_reg_t cached_reg
;
6564 error (_("Remote sent bad register number %s: %s\n\
6566 hex_string (pnum
), p
, buf
);
6568 cached_reg
.num
= reg
->regnum
;
6571 fieldsize
= hex2bin (p
, cached_reg
.data
,
6572 register_size (target_gdbarch (),
6575 if (fieldsize
< register_size (target_gdbarch (),
6577 warning (_("Remote reply is too short: %s"), buf
);
6579 VEC_safe_push (cached_reg_t
, event
->regcache
, &cached_reg
);
6583 /* Not a number. Silently skip unknown optional
6585 p
= strchrnul (p1
+ 1, ';');
6590 error (_("Remote register badly formatted: %s\nhere: %s"),
6595 if (event
->ws
.kind
!= TARGET_WAITKIND_IGNORE
)
6599 case 'S': /* Old style status, just signal only. */
6603 event
->ws
.kind
= TARGET_WAITKIND_STOPPED
;
6604 sig
= (fromhex (buf
[1]) << 4) + fromhex (buf
[2]);
6605 if (GDB_SIGNAL_FIRST
<= sig
&& sig
< GDB_SIGNAL_LAST
)
6606 event
->ws
.value
.sig
= (enum gdb_signal
) sig
;
6608 event
->ws
.value
.sig
= GDB_SIGNAL_UNKNOWN
;
6611 case 'w': /* Thread exited. */
6616 event
->ws
.kind
= TARGET_WAITKIND_THREAD_EXITED
;
6617 p
= unpack_varlen_hex (&buf
[1], &value
);
6618 event
->ws
.value
.integer
= value
;
6620 error (_("stop reply packet badly formatted: %s"), buf
);
6621 event
->ptid
= read_ptid (++p
, NULL
);
6624 case 'W': /* Target exited. */
6631 /* GDB used to accept only 2 hex chars here. Stubs should
6632 only send more if they detect GDB supports multi-process
6634 p
= unpack_varlen_hex (&buf
[1], &value
);
6638 /* The remote process exited. */
6639 event
->ws
.kind
= TARGET_WAITKIND_EXITED
;
6640 event
->ws
.value
.integer
= value
;
6644 /* The remote process exited with a signal. */
6645 event
->ws
.kind
= TARGET_WAITKIND_SIGNALLED
;
6646 if (GDB_SIGNAL_FIRST
<= value
&& value
< GDB_SIGNAL_LAST
)
6647 event
->ws
.value
.sig
= (enum gdb_signal
) value
;
6649 event
->ws
.value
.sig
= GDB_SIGNAL_UNKNOWN
;
6652 /* If no process is specified, assume inferior_ptid. */
6653 pid
= ptid_get_pid (inferior_ptid
);
6662 else if (startswith (p
, "process:"))
6666 p
+= sizeof ("process:") - 1;
6667 unpack_varlen_hex (p
, &upid
);
6671 error (_("unknown stop reply packet: %s"), buf
);
6674 error (_("unknown stop reply packet: %s"), buf
);
6675 event
->ptid
= pid_to_ptid (pid
);
6679 event
->ws
.kind
= TARGET_WAITKIND_NO_RESUMED
;
6680 event
->ptid
= minus_one_ptid
;
6684 if (target_is_non_stop_p () && ptid_equal (event
->ptid
, null_ptid
))
6685 error (_("No process or thread specified in stop reply: %s"), buf
);
6688 /* When the stub wants to tell GDB about a new notification reply, it
6689 sends a notification (%Stop, for example). Those can come it at
6690 any time, hence, we have to make sure that any pending
6691 putpkt/getpkt sequence we're making is finished, before querying
6692 the stub for more events with the corresponding ack command
6693 (vStopped, for example). E.g., if we started a vStopped sequence
6694 immediately upon receiving the notification, something like this
6702 1.6) <-- (registers reply to step #1.3)
6704 Obviously, the reply in step #1.6 would be unexpected to a vStopped
6707 To solve this, whenever we parse a %Stop notification successfully,
6708 we mark the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN, and carry on
6709 doing whatever we were doing:
6715 <GDB marks the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN>
6716 2.5) <-- (registers reply to step #2.3)
6718 Eventualy after step #2.5, we return to the event loop, which
6719 notices there's an event on the
6720 REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN event and calls the
6721 associated callback --- the function below. At this point, we're
6722 always safe to start a vStopped sequence. :
6725 2.7) <-- T05 thread:2
6731 remote_notif_get_pending_events (struct notif_client
*nc
)
6733 struct remote_state
*rs
= get_remote_state ();
6735 if (rs
->notif_state
->pending_event
[nc
->id
] != NULL
)
6738 fprintf_unfiltered (gdb_stdlog
,
6739 "notif: process: '%s' ack pending event\n",
6743 nc
->ack (nc
, rs
->buf
, rs
->notif_state
->pending_event
[nc
->id
]);
6744 rs
->notif_state
->pending_event
[nc
->id
] = NULL
;
6748 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6749 if (strcmp (rs
->buf
, "OK") == 0)
6752 remote_notif_ack (nc
, rs
->buf
);
6758 fprintf_unfiltered (gdb_stdlog
,
6759 "notif: process: '%s' no pending reply\n",
6764 /* Called when it is decided that STOP_REPLY holds the info of the
6765 event that is to be returned to the core. This function always
6766 destroys STOP_REPLY. */
6769 process_stop_reply (struct stop_reply
*stop_reply
,
6770 struct target_waitstatus
*status
)
6774 *status
= stop_reply
->ws
;
6775 ptid
= stop_reply
->ptid
;
6777 /* If no thread/process was reported by the stub, assume the current
6779 if (ptid_equal (ptid
, null_ptid
))
6780 ptid
= inferior_ptid
;
6782 if (status
->kind
!= TARGET_WAITKIND_EXITED
6783 && status
->kind
!= TARGET_WAITKIND_SIGNALLED
6784 && status
->kind
!= TARGET_WAITKIND_NO_RESUMED
)
6786 struct private_thread_info
*remote_thr
;
6788 /* Expedited registers. */
6789 if (stop_reply
->regcache
)
6791 struct regcache
*regcache
6792 = get_thread_arch_regcache (ptid
, target_gdbarch ());
6797 VEC_iterate(cached_reg_t
, stop_reply
->regcache
, ix
, reg
);
6799 regcache_raw_supply (regcache
, reg
->num
, reg
->data
);
6800 VEC_free (cached_reg_t
, stop_reply
->regcache
);
6803 remote_notice_new_inferior (ptid
, 0);
6804 remote_thr
= demand_private_info (ptid
);
6805 remote_thr
->core
= stop_reply
->core
;
6806 remote_thr
->stop_reason
= stop_reply
->stop_reason
;
6807 remote_thr
->watch_data_address
= stop_reply
->watch_data_address
;
6810 stop_reply_xfree (stop_reply
);
6814 /* The non-stop mode version of target_wait. */
6817 remote_wait_ns (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
6819 struct remote_state
*rs
= get_remote_state ();
6820 struct stop_reply
*stop_reply
;
6824 /* If in non-stop mode, get out of getpkt even if a
6825 notification is received. */
6827 ret
= getpkt_or_notif_sane (&rs
->buf
, &rs
->buf_size
,
6828 0 /* forever */, &is_notif
);
6831 if (ret
!= -1 && !is_notif
)
6834 case 'E': /* Error of some sort. */
6835 /* We're out of sync with the target now. Did it continue
6836 or not? We can't tell which thread it was in non-stop,
6837 so just ignore this. */
6838 warning (_("Remote failure reply: %s"), rs
->buf
);
6840 case 'O': /* Console output. */
6841 remote_console_output (rs
->buf
+ 1);
6844 warning (_("Invalid remote reply: %s"), rs
->buf
);
6848 /* Acknowledge a pending stop reply that may have arrived in the
6850 if (rs
->notif_state
->pending_event
[notif_client_stop
.id
] != NULL
)
6851 remote_notif_get_pending_events (¬if_client_stop
);
6853 /* If indeed we noticed a stop reply, we're done. */
6854 stop_reply
= queued_stop_reply (ptid
);
6855 if (stop_reply
!= NULL
)
6856 return process_stop_reply (stop_reply
, status
);
6858 /* Still no event. If we're just polling for an event, then
6859 return to the event loop. */
6860 if (options
& TARGET_WNOHANG
)
6862 status
->kind
= TARGET_WAITKIND_IGNORE
;
6863 return minus_one_ptid
;
6866 /* Otherwise do a blocking wait. */
6867 ret
= getpkt_or_notif_sane (&rs
->buf
, &rs
->buf_size
,
6868 1 /* forever */, &is_notif
);
6872 /* Wait until the remote machine stops, then return, storing status in
6873 STATUS just as `wait' would. */
6876 remote_wait_as (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
6878 struct remote_state
*rs
= get_remote_state ();
6879 ptid_t event_ptid
= null_ptid
;
6881 struct stop_reply
*stop_reply
;
6885 status
->kind
= TARGET_WAITKIND_IGNORE
;
6886 status
->value
.integer
= 0;
6888 stop_reply
= queued_stop_reply (ptid
);
6889 if (stop_reply
!= NULL
)
6890 return process_stop_reply (stop_reply
, status
);
6892 if (rs
->cached_wait_status
)
6893 /* Use the cached wait status, but only once. */
6894 rs
->cached_wait_status
= 0;
6899 int forever
= ((options
& TARGET_WNOHANG
) == 0
6900 && wait_forever_enabled_p
);
6902 if (!rs
->waiting_for_stop_reply
)
6904 status
->kind
= TARGET_WAITKIND_NO_RESUMED
;
6905 return minus_one_ptid
;
6908 /* FIXME: cagney/1999-09-27: If we're in async mode we should
6909 _never_ wait for ever -> test on target_is_async_p().
6910 However, before we do that we need to ensure that the caller
6911 knows how to take the target into/out of async mode. */
6912 ret
= getpkt_or_notif_sane (&rs
->buf
, &rs
->buf_size
,
6913 forever
, &is_notif
);
6915 /* GDB gets a notification. Return to core as this event is
6917 if (ret
!= -1 && is_notif
)
6918 return minus_one_ptid
;
6920 if (ret
== -1 && (options
& TARGET_WNOHANG
) != 0)
6921 return minus_one_ptid
;
6926 /* Assume that the target has acknowledged Ctrl-C unless we receive
6927 an 'F' or 'O' packet. */
6928 if (buf
[0] != 'F' && buf
[0] != 'O')
6929 rs
->ctrlc_pending_p
= 0;
6933 case 'E': /* Error of some sort. */
6934 /* We're out of sync with the target now. Did it continue or
6935 not? Not is more likely, so report a stop. */
6936 rs
->waiting_for_stop_reply
= 0;
6938 warning (_("Remote failure reply: %s"), buf
);
6939 status
->kind
= TARGET_WAITKIND_STOPPED
;
6940 status
->value
.sig
= GDB_SIGNAL_0
;
6942 case 'F': /* File-I/O request. */
6943 /* GDB may access the inferior memory while handling the File-I/O
6944 request, but we don't want GDB accessing memory while waiting
6945 for a stop reply. See the comments in putpkt_binary. Set
6946 waiting_for_stop_reply to 0 temporarily. */
6947 rs
->waiting_for_stop_reply
= 0;
6948 remote_fileio_request (buf
, rs
->ctrlc_pending_p
);
6949 rs
->ctrlc_pending_p
= 0;
6950 /* GDB handled the File-I/O request, and the target is running
6951 again. Keep waiting for events. */
6952 rs
->waiting_for_stop_reply
= 1;
6954 case 'N': case 'T': case 'S': case 'X': case 'W':
6956 struct stop_reply
*stop_reply
;
6958 /* There is a stop reply to handle. */
6959 rs
->waiting_for_stop_reply
= 0;
6962 = (struct stop_reply
*) remote_notif_parse (¬if_client_stop
,
6965 event_ptid
= process_stop_reply (stop_reply
, status
);
6968 case 'O': /* Console output. */
6969 remote_console_output (buf
+ 1);
6972 if (rs
->last_sent_signal
!= GDB_SIGNAL_0
)
6974 /* Zero length reply means that we tried 'S' or 'C' and the
6975 remote system doesn't support it. */
6976 target_terminal_ours_for_output ();
6978 ("Can't send signals to this remote system. %s not sent.\n",
6979 gdb_signal_to_name (rs
->last_sent_signal
));
6980 rs
->last_sent_signal
= GDB_SIGNAL_0
;
6981 target_terminal_inferior ();
6983 strcpy ((char *) buf
, rs
->last_sent_step
? "s" : "c");
6984 putpkt ((char *) buf
);
6987 /* else fallthrough */
6989 warning (_("Invalid remote reply: %s"), buf
);
6993 if (status
->kind
== TARGET_WAITKIND_NO_RESUMED
)
6994 return minus_one_ptid
;
6995 else if (status
->kind
== TARGET_WAITKIND_IGNORE
)
6997 /* Nothing interesting happened. If we're doing a non-blocking
6998 poll, we're done. Otherwise, go back to waiting. */
6999 if (options
& TARGET_WNOHANG
)
7000 return minus_one_ptid
;
7004 else if (status
->kind
!= TARGET_WAITKIND_EXITED
7005 && status
->kind
!= TARGET_WAITKIND_SIGNALLED
)
7007 if (!ptid_equal (event_ptid
, null_ptid
))
7008 record_currthread (rs
, event_ptid
);
7010 event_ptid
= inferior_ptid
;
7013 /* A process exit. Invalidate our notion of current thread. */
7014 record_currthread (rs
, minus_one_ptid
);
7019 /* Wait until the remote machine stops, then return, storing status in
7020 STATUS just as `wait' would. */
7023 remote_wait (struct target_ops
*ops
,
7024 ptid_t ptid
, struct target_waitstatus
*status
, int options
)
7028 if (target_is_non_stop_p ())
7029 event_ptid
= remote_wait_ns (ptid
, status
, options
);
7031 event_ptid
= remote_wait_as (ptid
, status
, options
);
7033 if (target_is_async_p ())
7035 /* If there are are events left in the queue tell the event loop
7037 if (!QUEUE_is_empty (stop_reply_p
, stop_reply_queue
))
7038 mark_async_event_handler (remote_async_inferior_event_token
);
7044 /* Fetch a single register using a 'p' packet. */
7047 fetch_register_using_p (struct regcache
*regcache
, struct packet_reg
*reg
)
7049 struct remote_state
*rs
= get_remote_state ();
7051 char regp
[MAX_REGISTER_SIZE
];
7054 if (packet_support (PACKET_p
) == PACKET_DISABLE
)
7057 if (reg
->pnum
== -1)
7062 p
+= hexnumstr (p
, reg
->pnum
);
7065 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7069 switch (packet_ok (buf
, &remote_protocol_packets
[PACKET_p
]))
7073 case PACKET_UNKNOWN
:
7076 error (_("Could not fetch register \"%s\"; remote failure reply '%s'"),
7077 gdbarch_register_name (get_regcache_arch (regcache
),
7082 /* If this register is unfetchable, tell the regcache. */
7085 regcache_raw_supply (regcache
, reg
->regnum
, NULL
);
7089 /* Otherwise, parse and supply the value. */
7095 error (_("fetch_register_using_p: early buf termination"));
7097 regp
[i
++] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
7100 regcache_raw_supply (regcache
, reg
->regnum
, regp
);
7104 /* Fetch the registers included in the target's 'g' packet. */
7107 send_g_packet (void)
7109 struct remote_state
*rs
= get_remote_state ();
7112 xsnprintf (rs
->buf
, get_remote_packet_size (), "g");
7113 remote_send (&rs
->buf
, &rs
->buf_size
);
7115 /* We can get out of synch in various cases. If the first character
7116 in the buffer is not a hex character, assume that has happened
7117 and try to fetch another packet to read. */
7118 while ((rs
->buf
[0] < '0' || rs
->buf
[0] > '9')
7119 && (rs
->buf
[0] < 'A' || rs
->buf
[0] > 'F')
7120 && (rs
->buf
[0] < 'a' || rs
->buf
[0] > 'f')
7121 && rs
->buf
[0] != 'x') /* New: unavailable register value. */
7124 fprintf_unfiltered (gdb_stdlog
,
7125 "Bad register packet; fetching a new packet\n");
7126 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7129 buf_len
= strlen (rs
->buf
);
7131 /* Sanity check the received packet. */
7132 if (buf_len
% 2 != 0)
7133 error (_("Remote 'g' packet reply is of odd length: %s"), rs
->buf
);
7139 process_g_packet (struct regcache
*regcache
)
7141 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
7142 struct remote_state
*rs
= get_remote_state ();
7143 struct remote_arch_state
*rsa
= get_remote_arch_state ();
7148 buf_len
= strlen (rs
->buf
);
7150 /* Further sanity checks, with knowledge of the architecture. */
7151 if (buf_len
> 2 * rsa
->sizeof_g_packet
)
7152 error (_("Remote 'g' packet reply is too long: %s"), rs
->buf
);
7154 /* Save the size of the packet sent to us by the target. It is used
7155 as a heuristic when determining the max size of packets that the
7156 target can safely receive. */
7157 if (rsa
->actual_register_packet_size
== 0)
7158 rsa
->actual_register_packet_size
= buf_len
;
7160 /* If this is smaller than we guessed the 'g' packet would be,
7161 update our records. A 'g' reply that doesn't include a register's
7162 value implies either that the register is not available, or that
7163 the 'p' packet must be used. */
7164 if (buf_len
< 2 * rsa
->sizeof_g_packet
)
7166 rsa
->sizeof_g_packet
= buf_len
/ 2;
7168 for (i
= 0; i
< gdbarch_num_regs (gdbarch
); i
++)
7170 if (rsa
->regs
[i
].pnum
== -1)
7173 if (rsa
->regs
[i
].offset
>= rsa
->sizeof_g_packet
)
7174 rsa
->regs
[i
].in_g_packet
= 0;
7176 rsa
->regs
[i
].in_g_packet
= 1;
7180 regs
= (char *) alloca (rsa
->sizeof_g_packet
);
7182 /* Unimplemented registers read as all bits zero. */
7183 memset (regs
, 0, rsa
->sizeof_g_packet
);
7185 /* Reply describes registers byte by byte, each byte encoded as two
7186 hex characters. Suck them all up, then supply them to the
7187 register cacheing/storage mechanism. */
7190 for (i
= 0; i
< rsa
->sizeof_g_packet
; i
++)
7192 if (p
[0] == 0 || p
[1] == 0)
7193 /* This shouldn't happen - we adjusted sizeof_g_packet above. */
7194 internal_error (__FILE__
, __LINE__
,
7195 _("unexpected end of 'g' packet reply"));
7197 if (p
[0] == 'x' && p
[1] == 'x')
7198 regs
[i
] = 0; /* 'x' */
7200 regs
[i
] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
7204 for (i
= 0; i
< gdbarch_num_regs (gdbarch
); i
++)
7206 struct packet_reg
*r
= &rsa
->regs
[i
];
7210 if (r
->offset
* 2 >= strlen (rs
->buf
))
7211 /* This shouldn't happen - we adjusted in_g_packet above. */
7212 internal_error (__FILE__
, __LINE__
,
7213 _("unexpected end of 'g' packet reply"));
7214 else if (rs
->buf
[r
->offset
* 2] == 'x')
7216 gdb_assert (r
->offset
* 2 < strlen (rs
->buf
));
7217 /* The register isn't available, mark it as such (at
7218 the same time setting the value to zero). */
7219 regcache_raw_supply (regcache
, r
->regnum
, NULL
);
7222 regcache_raw_supply (regcache
, r
->regnum
,
7229 fetch_registers_using_g (struct regcache
*regcache
)
7232 process_g_packet (regcache
);
7235 /* Make the remote selected traceframe match GDB's selected
7239 set_remote_traceframe (void)
7242 struct remote_state
*rs
= get_remote_state ();
7244 if (rs
->remote_traceframe_number
== get_traceframe_number ())
7247 /* Avoid recursion, remote_trace_find calls us again. */
7248 rs
->remote_traceframe_number
= get_traceframe_number ();
7250 newnum
= target_trace_find (tfind_number
,
7251 get_traceframe_number (), 0, 0, NULL
);
7253 /* Should not happen. If it does, all bets are off. */
7254 if (newnum
!= get_traceframe_number ())
7255 warning (_("could not set remote traceframe"));
7259 remote_fetch_registers (struct target_ops
*ops
,
7260 struct regcache
*regcache
, int regnum
)
7262 struct remote_arch_state
*rsa
= get_remote_arch_state ();
7265 set_remote_traceframe ();
7266 set_general_thread (inferior_ptid
);
7270 struct packet_reg
*reg
= packet_reg_from_regnum (rsa
, regnum
);
7272 gdb_assert (reg
!= NULL
);
7274 /* If this register might be in the 'g' packet, try that first -
7275 we are likely to read more than one register. If this is the
7276 first 'g' packet, we might be overly optimistic about its
7277 contents, so fall back to 'p'. */
7278 if (reg
->in_g_packet
)
7280 fetch_registers_using_g (regcache
);
7281 if (reg
->in_g_packet
)
7285 if (fetch_register_using_p (regcache
, reg
))
7288 /* This register is not available. */
7289 regcache_raw_supply (regcache
, reg
->regnum
, NULL
);
7294 fetch_registers_using_g (regcache
);
7296 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
7297 if (!rsa
->regs
[i
].in_g_packet
)
7298 if (!fetch_register_using_p (regcache
, &rsa
->regs
[i
]))
7300 /* This register is not available. */
7301 regcache_raw_supply (regcache
, i
, NULL
);
7305 /* Prepare to store registers. Since we may send them all (using a
7306 'G' request), we have to read out the ones we don't want to change
7310 remote_prepare_to_store (struct target_ops
*self
, struct regcache
*regcache
)
7312 struct remote_arch_state
*rsa
= get_remote_arch_state ();
7314 gdb_byte buf
[MAX_REGISTER_SIZE
];
7316 /* Make sure the entire registers array is valid. */
7317 switch (packet_support (PACKET_P
))
7319 case PACKET_DISABLE
:
7320 case PACKET_SUPPORT_UNKNOWN
:
7321 /* Make sure all the necessary registers are cached. */
7322 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
7323 if (rsa
->regs
[i
].in_g_packet
)
7324 regcache_raw_read (regcache
, rsa
->regs
[i
].regnum
, buf
);
7331 /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF
7332 packet was not recognized. */
7335 store_register_using_P (const struct regcache
*regcache
,
7336 struct packet_reg
*reg
)
7338 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
7339 struct remote_state
*rs
= get_remote_state ();
7340 /* Try storing a single register. */
7341 char *buf
= rs
->buf
;
7342 gdb_byte regp
[MAX_REGISTER_SIZE
];
7345 if (packet_support (PACKET_P
) == PACKET_DISABLE
)
7348 if (reg
->pnum
== -1)
7351 xsnprintf (buf
, get_remote_packet_size (), "P%s=", phex_nz (reg
->pnum
, 0));
7352 p
= buf
+ strlen (buf
);
7353 regcache_raw_collect (regcache
, reg
->regnum
, regp
);
7354 bin2hex (regp
, p
, register_size (gdbarch
, reg
->regnum
));
7356 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7358 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_P
]))
7363 error (_("Could not write register \"%s\"; remote failure reply '%s'"),
7364 gdbarch_register_name (gdbarch
, reg
->regnum
), rs
->buf
);
7365 case PACKET_UNKNOWN
:
7368 internal_error (__FILE__
, __LINE__
, _("Bad result from packet_ok"));
7372 /* Store register REGNUM, or all registers if REGNUM == -1, from the
7373 contents of the register cache buffer. FIXME: ignores errors. */
7376 store_registers_using_G (const struct regcache
*regcache
)
7378 struct remote_state
*rs
= get_remote_state ();
7379 struct remote_arch_state
*rsa
= get_remote_arch_state ();
7383 /* Extract all the registers in the regcache copying them into a
7388 regs
= (gdb_byte
*) alloca (rsa
->sizeof_g_packet
);
7389 memset (regs
, 0, rsa
->sizeof_g_packet
);
7390 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
7392 struct packet_reg
*r
= &rsa
->regs
[i
];
7395 regcache_raw_collect (regcache
, r
->regnum
, regs
+ r
->offset
);
7399 /* Command describes registers byte by byte,
7400 each byte encoded as two hex characters. */
7403 /* remote_prepare_to_store insures that rsa->sizeof_g_packet gets
7405 bin2hex (regs
, p
, rsa
->sizeof_g_packet
);
7407 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7408 if (packet_check_result (rs
->buf
) == PACKET_ERROR
)
7409 error (_("Could not write registers; remote failure reply '%s'"),
7413 /* Store register REGNUM, or all registers if REGNUM == -1, from the contents
7414 of the register cache buffer. FIXME: ignores errors. */
7417 remote_store_registers (struct target_ops
*ops
,
7418 struct regcache
*regcache
, int regnum
)
7420 struct remote_arch_state
*rsa
= get_remote_arch_state ();
7423 set_remote_traceframe ();
7424 set_general_thread (inferior_ptid
);
7428 struct packet_reg
*reg
= packet_reg_from_regnum (rsa
, regnum
);
7430 gdb_assert (reg
!= NULL
);
7432 /* Always prefer to store registers using the 'P' packet if
7433 possible; we often change only a small number of registers.
7434 Sometimes we change a larger number; we'd need help from a
7435 higher layer to know to use 'G'. */
7436 if (store_register_using_P (regcache
, reg
))
7439 /* For now, don't complain if we have no way to write the
7440 register. GDB loses track of unavailable registers too
7441 easily. Some day, this may be an error. We don't have
7442 any way to read the register, either... */
7443 if (!reg
->in_g_packet
)
7446 store_registers_using_G (regcache
);
7450 store_registers_using_G (regcache
);
7452 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
7453 if (!rsa
->regs
[i
].in_g_packet
)
7454 if (!store_register_using_P (regcache
, &rsa
->regs
[i
]))
7455 /* See above for why we do not issue an error here. */
7460 /* Return the number of hex digits in num. */
7463 hexnumlen (ULONGEST num
)
7467 for (i
= 0; num
!= 0; i
++)
7473 /* Set BUF to the minimum number of hex digits representing NUM. */
7476 hexnumstr (char *buf
, ULONGEST num
)
7478 int len
= hexnumlen (num
);
7480 return hexnumnstr (buf
, num
, len
);
7484 /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */
7487 hexnumnstr (char *buf
, ULONGEST num
, int width
)
7493 for (i
= width
- 1; i
>= 0; i
--)
7495 buf
[i
] = "0123456789abcdef"[(num
& 0xf)];
7502 /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */
7505 remote_address_masked (CORE_ADDR addr
)
7507 unsigned int address_size
= remote_address_size
;
7509 /* If "remoteaddresssize" was not set, default to target address size. */
7511 address_size
= gdbarch_addr_bit (target_gdbarch ());
7513 if (address_size
> 0
7514 && address_size
< (sizeof (ULONGEST
) * 8))
7516 /* Only create a mask when that mask can safely be constructed
7517 in a ULONGEST variable. */
7520 mask
= (mask
<< address_size
) - 1;
7526 /* Determine whether the remote target supports binary downloading.
7527 This is accomplished by sending a no-op memory write of zero length
7528 to the target at the specified address. It does not suffice to send
7529 the whole packet, since many stubs strip the eighth bit and
7530 subsequently compute a wrong checksum, which causes real havoc with
7533 NOTE: This can still lose if the serial line is not eight-bit
7534 clean. In cases like this, the user should clear "remote
7538 check_binary_download (CORE_ADDR addr
)
7540 struct remote_state
*rs
= get_remote_state ();
7542 switch (packet_support (PACKET_X
))
7544 case PACKET_DISABLE
:
7548 case PACKET_SUPPORT_UNKNOWN
:
7554 p
+= hexnumstr (p
, (ULONGEST
) addr
);
7556 p
+= hexnumstr (p
, (ULONGEST
) 0);
7560 putpkt_binary (rs
->buf
, (int) (p
- rs
->buf
));
7561 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7563 if (rs
->buf
[0] == '\0')
7566 fprintf_unfiltered (gdb_stdlog
,
7567 "binary downloading NOT "
7568 "supported by target\n");
7569 remote_protocol_packets
[PACKET_X
].support
= PACKET_DISABLE
;
7574 fprintf_unfiltered (gdb_stdlog
,
7575 "binary downloading supported by target\n");
7576 remote_protocol_packets
[PACKET_X
].support
= PACKET_ENABLE
;
7583 /* Helper function to resize the payload in order to try to get a good
7584 alignment. We try to write an amount of data such that the next write will
7585 start on an address aligned on REMOTE_ALIGN_WRITES. */
7588 align_for_efficient_write (int todo
, CORE_ADDR memaddr
)
7590 return ((memaddr
+ todo
) & ~(REMOTE_ALIGN_WRITES
- 1)) - memaddr
;
7593 /* Write memory data directly to the remote machine.
7594 This does not inform the data cache; the data cache uses this.
7595 HEADER is the starting part of the packet.
7596 MEMADDR is the address in the remote memory space.
7597 MYADDR is the address of the buffer in our space.
7598 LEN_UNITS is the number of addressable units to write.
7599 UNIT_SIZE is the length in bytes of an addressable unit.
7600 PACKET_FORMAT should be either 'X' or 'M', and indicates if we
7601 should send data as binary ('X'), or hex-encoded ('M').
7603 The function creates packet of the form
7604 <HEADER><ADDRESS>,<LENGTH>:<DATA>
7606 where encoding of <DATA> is terminated by PACKET_FORMAT.
7608 If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma
7611 Return the transferred status, error or OK (an
7612 'enum target_xfer_status' value). Save the number of addressable units
7613 transferred in *XFERED_LEN_UNITS. Only transfer a single packet.
7615 On a platform with an addressable memory size of 2 bytes (UNIT_SIZE == 2), an
7616 exchange between gdb and the stub could look like (?? in place of the
7622 -> $M1000,3:eeeeffffeeee#??
7626 <- eeeeffffeeeedddd */
7628 static enum target_xfer_status
7629 remote_write_bytes_aux (const char *header
, CORE_ADDR memaddr
,
7630 const gdb_byte
*myaddr
, ULONGEST len_units
,
7631 int unit_size
, ULONGEST
*xfered_len_units
,
7632 char packet_format
, int use_length
)
7634 struct remote_state
*rs
= get_remote_state ();
7640 int payload_capacity_bytes
;
7641 int payload_length_bytes
;
7643 if (packet_format
!= 'X' && packet_format
!= 'M')
7644 internal_error (__FILE__
, __LINE__
,
7645 _("remote_write_bytes_aux: bad packet format"));
7648 return TARGET_XFER_EOF
;
7650 payload_capacity_bytes
= get_memory_write_packet_size ();
7652 /* The packet buffer will be large enough for the payload;
7653 get_memory_packet_size ensures this. */
7656 /* Compute the size of the actual payload by subtracting out the
7657 packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */
7659 payload_capacity_bytes
-= strlen ("$,:#NN");
7661 /* The comma won't be used. */
7662 payload_capacity_bytes
+= 1;
7663 payload_capacity_bytes
-= strlen (header
);
7664 payload_capacity_bytes
-= hexnumlen (memaddr
);
7666 /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */
7668 strcat (rs
->buf
, header
);
7669 p
= rs
->buf
+ strlen (header
);
7671 /* Compute a best guess of the number of bytes actually transfered. */
7672 if (packet_format
== 'X')
7674 /* Best guess at number of bytes that will fit. */
7675 todo_units
= min (len_units
, payload_capacity_bytes
/ unit_size
);
7677 payload_capacity_bytes
-= hexnumlen (todo_units
);
7678 todo_units
= min (todo_units
, payload_capacity_bytes
/ unit_size
);
7682 /* Number of bytes that will fit. */
7683 todo_units
= min (len_units
, (payload_capacity_bytes
/ unit_size
) / 2);
7685 payload_capacity_bytes
-= hexnumlen (todo_units
);
7686 todo_units
= min (todo_units
, (payload_capacity_bytes
/ unit_size
) / 2);
7689 if (todo_units
<= 0)
7690 internal_error (__FILE__
, __LINE__
,
7691 _("minimum packet size too small to write data"));
7693 /* If we already need another packet, then try to align the end
7694 of this packet to a useful boundary. */
7695 if (todo_units
> 2 * REMOTE_ALIGN_WRITES
&& todo_units
< len_units
)
7696 todo_units
= align_for_efficient_write (todo_units
, memaddr
);
7698 /* Append "<memaddr>". */
7699 memaddr
= remote_address_masked (memaddr
);
7700 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
7707 /* Append the length and retain its location and size. It may need to be
7708 adjusted once the packet body has been created. */
7710 plenlen
= hexnumstr (p
, (ULONGEST
) todo_units
);
7718 /* Append the packet body. */
7719 if (packet_format
== 'X')
7721 /* Binary mode. Send target system values byte by byte, in
7722 increasing byte addresses. Only escape certain critical
7724 payload_length_bytes
=
7725 remote_escape_output (myaddr
, todo_units
, unit_size
, (gdb_byte
*) p
,
7726 &units_written
, payload_capacity_bytes
);
7728 /* If not all TODO units fit, then we'll need another packet. Make
7729 a second try to keep the end of the packet aligned. Don't do
7730 this if the packet is tiny. */
7731 if (units_written
< todo_units
&& units_written
> 2 * REMOTE_ALIGN_WRITES
)
7735 new_todo_units
= align_for_efficient_write (units_written
, memaddr
);
7737 if (new_todo_units
!= units_written
)
7738 payload_length_bytes
=
7739 remote_escape_output (myaddr
, new_todo_units
, unit_size
,
7740 (gdb_byte
*) p
, &units_written
,
7741 payload_capacity_bytes
);
7744 p
+= payload_length_bytes
;
7745 if (use_length
&& units_written
< todo_units
)
7747 /* Escape chars have filled up the buffer prematurely,
7748 and we have actually sent fewer units than planned.
7749 Fix-up the length field of the packet. Use the same
7750 number of characters as before. */
7751 plen
+= hexnumnstr (plen
, (ULONGEST
) units_written
,
7753 *plen
= ':'; /* overwrite \0 from hexnumnstr() */
7758 /* Normal mode: Send target system values byte by byte, in
7759 increasing byte addresses. Each byte is encoded as a two hex
7761 p
+= 2 * bin2hex (myaddr
, p
, todo_units
* unit_size
);
7762 units_written
= todo_units
;
7765 putpkt_binary (rs
->buf
, (int) (p
- rs
->buf
));
7766 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7768 if (rs
->buf
[0] == 'E')
7769 return TARGET_XFER_E_IO
;
7771 /* Return UNITS_WRITTEN, not TODO_UNITS, in case escape chars caused us to
7772 send fewer units than we'd planned. */
7773 *xfered_len_units
= (ULONGEST
) units_written
;
7774 return TARGET_XFER_OK
;
7777 /* Write memory data directly to the remote machine.
7778 This does not inform the data cache; the data cache uses this.
7779 MEMADDR is the address in the remote memory space.
7780 MYADDR is the address of the buffer in our space.
7781 LEN is the number of bytes.
7783 Return the transferred status, error or OK (an
7784 'enum target_xfer_status' value). Save the number of bytes
7785 transferred in *XFERED_LEN. Only transfer a single packet. */
7787 static enum target_xfer_status
7788 remote_write_bytes (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ULONGEST len
,
7789 int unit_size
, ULONGEST
*xfered_len
)
7791 char *packet_format
= 0;
7793 /* Check whether the target supports binary download. */
7794 check_binary_download (memaddr
);
7796 switch (packet_support (PACKET_X
))
7799 packet_format
= "X";
7801 case PACKET_DISABLE
:
7802 packet_format
= "M";
7804 case PACKET_SUPPORT_UNKNOWN
:
7805 internal_error (__FILE__
, __LINE__
,
7806 _("remote_write_bytes: bad internal state"));
7808 internal_error (__FILE__
, __LINE__
, _("bad switch"));
7811 return remote_write_bytes_aux (packet_format
,
7812 memaddr
, myaddr
, len
, unit_size
, xfered_len
,
7813 packet_format
[0], 1);
7816 /* Read memory data directly from the remote machine.
7817 This does not use the data cache; the data cache uses this.
7818 MEMADDR is the address in the remote memory space.
7819 MYADDR is the address of the buffer in our space.
7820 LEN_UNITS is the number of addressable memory units to read..
7821 UNIT_SIZE is the length in bytes of an addressable unit.
7823 Return the transferred status, error or OK (an
7824 'enum target_xfer_status' value). Save the number of bytes
7825 transferred in *XFERED_LEN_UNITS.
7827 See the comment of remote_write_bytes_aux for an example of
7828 memory read/write exchange between gdb and the stub. */
7830 static enum target_xfer_status
7831 remote_read_bytes_1 (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ULONGEST len_units
,
7832 int unit_size
, ULONGEST
*xfered_len_units
)
7834 struct remote_state
*rs
= get_remote_state ();
7835 int buf_size_bytes
; /* Max size of packet output buffer. */
7840 buf_size_bytes
= get_memory_read_packet_size ();
7841 /* The packet buffer will be large enough for the payload;
7842 get_memory_packet_size ensures this. */
7844 /* Number of units that will fit. */
7845 todo_units
= min (len_units
, (buf_size_bytes
/ unit_size
) / 2);
7847 /* Construct "m"<memaddr>","<len>". */
7848 memaddr
= remote_address_masked (memaddr
);
7851 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
7853 p
+= hexnumstr (p
, (ULONGEST
) todo_units
);
7856 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7857 if (rs
->buf
[0] == 'E'
7858 && isxdigit (rs
->buf
[1]) && isxdigit (rs
->buf
[2])
7859 && rs
->buf
[3] == '\0')
7860 return TARGET_XFER_E_IO
;
7861 /* Reply describes memory byte by byte, each byte encoded as two hex
7864 decoded_bytes
= hex2bin (p
, myaddr
, todo_units
* unit_size
);
7865 /* Return what we have. Let higher layers handle partial reads. */
7866 *xfered_len_units
= (ULONGEST
) (decoded_bytes
/ unit_size
);
7867 return TARGET_XFER_OK
;
7870 /* Using the set of read-only target sections of remote, read live
7873 For interface/parameters/return description see target.h,
7876 static enum target_xfer_status
7877 remote_xfer_live_readonly_partial (struct target_ops
*ops
, gdb_byte
*readbuf
,
7878 ULONGEST memaddr
, ULONGEST len
,
7879 int unit_size
, ULONGEST
*xfered_len
)
7881 struct target_section
*secp
;
7882 struct target_section_table
*table
;
7884 secp
= target_section_by_addr (ops
, memaddr
);
7886 && (bfd_get_section_flags (secp
->the_bfd_section
->owner
,
7887 secp
->the_bfd_section
)
7890 struct target_section
*p
;
7891 ULONGEST memend
= memaddr
+ len
;
7893 table
= target_get_section_table (ops
);
7895 for (p
= table
->sections
; p
< table
->sections_end
; p
++)
7897 if (memaddr
>= p
->addr
)
7899 if (memend
<= p
->endaddr
)
7901 /* Entire transfer is within this section. */
7902 return remote_read_bytes_1 (memaddr
, readbuf
, len
, unit_size
,
7905 else if (memaddr
>= p
->endaddr
)
7907 /* This section ends before the transfer starts. */
7912 /* This section overlaps the transfer. Just do half. */
7913 len
= p
->endaddr
- memaddr
;
7914 return remote_read_bytes_1 (memaddr
, readbuf
, len
, unit_size
,
7921 return TARGET_XFER_EOF
;
7924 /* Similar to remote_read_bytes_1, but it reads from the remote stub
7925 first if the requested memory is unavailable in traceframe.
7926 Otherwise, fall back to remote_read_bytes_1. */
7928 static enum target_xfer_status
7929 remote_read_bytes (struct target_ops
*ops
, CORE_ADDR memaddr
,
7930 gdb_byte
*myaddr
, ULONGEST len
, int unit_size
,
7931 ULONGEST
*xfered_len
)
7934 return TARGET_XFER_EOF
;
7936 if (get_traceframe_number () != -1)
7938 VEC(mem_range_s
) *available
;
7940 /* If we fail to get the set of available memory, then the
7941 target does not support querying traceframe info, and so we
7942 attempt reading from the traceframe anyway (assuming the
7943 target implements the old QTro packet then). */
7944 if (traceframe_available_memory (&available
, memaddr
, len
))
7946 struct cleanup
*old_chain
;
7948 old_chain
= make_cleanup (VEC_cleanup(mem_range_s
), &available
);
7950 if (VEC_empty (mem_range_s
, available
)
7951 || VEC_index (mem_range_s
, available
, 0)->start
!= memaddr
)
7953 enum target_xfer_status res
;
7955 /* Don't read into the traceframe's available
7957 if (!VEC_empty (mem_range_s
, available
))
7959 LONGEST oldlen
= len
;
7961 len
= VEC_index (mem_range_s
, available
, 0)->start
- memaddr
;
7962 gdb_assert (len
<= oldlen
);
7965 do_cleanups (old_chain
);
7967 /* This goes through the topmost target again. */
7968 res
= remote_xfer_live_readonly_partial (ops
, myaddr
, memaddr
,
7969 len
, unit_size
, xfered_len
);
7970 if (res
== TARGET_XFER_OK
)
7971 return TARGET_XFER_OK
;
7974 /* No use trying further, we know some memory starting
7975 at MEMADDR isn't available. */
7977 return TARGET_XFER_UNAVAILABLE
;
7981 /* Don't try to read more than how much is available, in
7982 case the target implements the deprecated QTro packet to
7983 cater for older GDBs (the target's knowledge of read-only
7984 sections may be outdated by now). */
7985 len
= VEC_index (mem_range_s
, available
, 0)->length
;
7987 do_cleanups (old_chain
);
7991 return remote_read_bytes_1 (memaddr
, myaddr
, len
, unit_size
, xfered_len
);
7996 /* Sends a packet with content determined by the printf format string
7997 FORMAT and the remaining arguments, then gets the reply. Returns
7998 whether the packet was a success, a failure, or unknown. */
8000 static enum packet_result
remote_send_printf (const char *format
, ...)
8001 ATTRIBUTE_PRINTF (1, 2);
8003 static enum packet_result
8004 remote_send_printf (const char *format
, ...)
8006 struct remote_state
*rs
= get_remote_state ();
8007 int max_size
= get_remote_packet_size ();
8010 va_start (ap
, format
);
8013 if (vsnprintf (rs
->buf
, max_size
, format
, ap
) >= max_size
)
8014 internal_error (__FILE__
, __LINE__
, _("Too long remote packet."));
8016 if (putpkt (rs
->buf
) < 0)
8017 error (_("Communication problem with target."));
8020 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8022 return packet_check_result (rs
->buf
);
8026 restore_remote_timeout (void *p
)
8028 int value
= *(int *)p
;
8030 remote_timeout
= value
;
8033 /* Flash writing can take quite some time. We'll set
8034 effectively infinite timeout for flash operations.
8035 In future, we'll need to decide on a better approach. */
8036 static const int remote_flash_timeout
= 1000;
8039 remote_flash_erase (struct target_ops
*ops
,
8040 ULONGEST address
, LONGEST length
)
8042 int addr_size
= gdbarch_addr_bit (target_gdbarch ()) / 8;
8043 int saved_remote_timeout
= remote_timeout
;
8044 enum packet_result ret
;
8045 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
8046 &saved_remote_timeout
);
8048 remote_timeout
= remote_flash_timeout
;
8050 ret
= remote_send_printf ("vFlashErase:%s,%s",
8051 phex (address
, addr_size
),
8055 case PACKET_UNKNOWN
:
8056 error (_("Remote target does not support flash erase"));
8058 error (_("Error erasing flash with vFlashErase packet"));
8063 do_cleanups (back_to
);
8066 static enum target_xfer_status
8067 remote_flash_write (struct target_ops
*ops
, ULONGEST address
,
8068 ULONGEST length
, ULONGEST
*xfered_len
,
8069 const gdb_byte
*data
)
8071 int saved_remote_timeout
= remote_timeout
;
8072 enum target_xfer_status ret
;
8073 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
8074 &saved_remote_timeout
);
8076 remote_timeout
= remote_flash_timeout
;
8077 ret
= remote_write_bytes_aux ("vFlashWrite:", address
, data
, length
, 1,
8079 do_cleanups (back_to
);
8085 remote_flash_done (struct target_ops
*ops
)
8087 int saved_remote_timeout
= remote_timeout
;
8089 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
8090 &saved_remote_timeout
);
8092 remote_timeout
= remote_flash_timeout
;
8093 ret
= remote_send_printf ("vFlashDone");
8094 do_cleanups (back_to
);
8098 case PACKET_UNKNOWN
:
8099 error (_("Remote target does not support vFlashDone"));
8101 error (_("Error finishing flash operation"));
8108 remote_files_info (struct target_ops
*ignore
)
8110 puts_filtered ("Debugging a target over a serial line.\n");
8113 /* Stuff for dealing with the packets which are part of this protocol.
8114 See comment at top of file for details. */
8116 /* Close/unpush the remote target, and throw a TARGET_CLOSE_ERROR
8117 error to higher layers. Called when a serial error is detected.
8118 The exception message is STRING, followed by a colon and a blank,
8119 the system error message for errno at function entry and final dot
8120 for output compatibility with throw_perror_with_name. */
8123 unpush_and_perror (const char *string
)
8125 int saved_errno
= errno
;
8127 remote_unpush_target ();
8128 throw_error (TARGET_CLOSE_ERROR
, "%s: %s.", string
,
8129 safe_strerror (saved_errno
));
8132 /* Read a single character from the remote end. The current quit
8133 handler is overridden to avoid quitting in the middle of packet
8134 sequence, as that would break communication with the remote server.
8135 See remote_serial_quit_handler for more detail. */
8138 readchar (int timeout
)
8141 struct remote_state
*rs
= get_remote_state ();
8142 struct cleanup
*old_chain
;
8144 old_chain
= make_cleanup_override_quit_handler (remote_serial_quit_handler
);
8146 rs
->got_ctrlc_during_io
= 0;
8148 ch
= serial_readchar (rs
->remote_desc
, timeout
);
8150 if (rs
->got_ctrlc_during_io
)
8153 do_cleanups (old_chain
);
8158 switch ((enum serial_rc
) ch
)
8161 remote_unpush_target ();
8162 throw_error (TARGET_CLOSE_ERROR
, _("Remote connection closed"));
8165 unpush_and_perror (_("Remote communication error. "
8166 "Target disconnected."));
8168 case SERIAL_TIMEOUT
:
8174 /* Wrapper for serial_write that closes the target and throws if
8175 writing fails. The current quit handler is overridden to avoid
8176 quitting in the middle of packet sequence, as that would break
8177 communication with the remote server. See
8178 remote_serial_quit_handler for more detail. */
8181 remote_serial_write (const char *str
, int len
)
8183 struct remote_state
*rs
= get_remote_state ();
8184 struct cleanup
*old_chain
;
8186 old_chain
= make_cleanup_override_quit_handler (remote_serial_quit_handler
);
8188 rs
->got_ctrlc_during_io
= 0;
8190 if (serial_write (rs
->remote_desc
, str
, len
))
8192 unpush_and_perror (_("Remote communication error. "
8193 "Target disconnected."));
8196 if (rs
->got_ctrlc_during_io
)
8199 do_cleanups (old_chain
);
8202 /* Send the command in *BUF to the remote machine, and read the reply
8203 into *BUF. Report an error if we get an error reply. Resize
8204 *BUF using xrealloc if necessary to hold the result, and update
8208 remote_send (char **buf
,
8212 getpkt (buf
, sizeof_buf
, 0);
8214 if ((*buf
)[0] == 'E')
8215 error (_("Remote failure reply: %s"), *buf
);
8218 /* Return a pointer to an xmalloc'ed string representing an escaped
8219 version of BUF, of len N. E.g. \n is converted to \\n, \t to \\t,
8220 etc. The caller is responsible for releasing the returned
8224 escape_buffer (const char *buf
, int n
)
8226 struct cleanup
*old_chain
;
8227 struct ui_file
*stb
;
8230 stb
= mem_fileopen ();
8231 old_chain
= make_cleanup_ui_file_delete (stb
);
8233 fputstrn_unfiltered (buf
, n
, '\\', stb
);
8234 str
= ui_file_xstrdup (stb
, NULL
);
8235 do_cleanups (old_chain
);
8239 /* Display a null-terminated packet on stdout, for debugging, using C
8243 print_packet (const char *buf
)
8245 puts_filtered ("\"");
8246 fputstr_filtered (buf
, '"', gdb_stdout
);
8247 puts_filtered ("\"");
8251 putpkt (const char *buf
)
8253 return putpkt_binary (buf
, strlen (buf
));
8256 /* Send a packet to the remote machine, with error checking. The data
8257 of the packet is in BUF. The string in BUF can be at most
8258 get_remote_packet_size () - 5 to account for the $, # and checksum,
8259 and for a possible /0 if we are debugging (remote_debug) and want
8260 to print the sent packet as a string. */
8263 putpkt_binary (const char *buf
, int cnt
)
8265 struct remote_state
*rs
= get_remote_state ();
8267 unsigned char csum
= 0;
8268 char *buf2
= (char *) xmalloc (cnt
+ 6);
8269 struct cleanup
*old_chain
= make_cleanup (xfree
, buf2
);
8275 /* Catch cases like trying to read memory or listing threads while
8276 we're waiting for a stop reply. The remote server wouldn't be
8277 ready to handle this request, so we'd hang and timeout. We don't
8278 have to worry about this in synchronous mode, because in that
8279 case it's not possible to issue a command while the target is
8280 running. This is not a problem in non-stop mode, because in that
8281 case, the stub is always ready to process serial input. */
8282 if (!target_is_non_stop_p ()
8283 && target_is_async_p ()
8284 && rs
->waiting_for_stop_reply
)
8286 error (_("Cannot execute this command while the target is running.\n"
8287 "Use the \"interrupt\" command to stop the target\n"
8288 "and then try again."));
8291 /* We're sending out a new packet. Make sure we don't look at a
8292 stale cached response. */
8293 rs
->cached_wait_status
= 0;
8295 /* Copy the packet into buffer BUF2, encapsulating it
8296 and giving it a checksum. */
8301 for (i
= 0; i
< cnt
; i
++)
8307 *p
++ = tohex ((csum
>> 4) & 0xf);
8308 *p
++ = tohex (csum
& 0xf);
8310 /* Send it over and over until we get a positive ack. */
8314 int started_error_output
= 0;
8318 struct cleanup
*old_chain
;
8322 str
= escape_buffer (buf2
, p
- buf2
);
8323 old_chain
= make_cleanup (xfree
, str
);
8324 fprintf_unfiltered (gdb_stdlog
, "Sending packet: %s...", str
);
8325 gdb_flush (gdb_stdlog
);
8326 do_cleanups (old_chain
);
8328 remote_serial_write (buf2
, p
- buf2
);
8330 /* If this is a no acks version of the remote protocol, send the
8331 packet and move on. */
8335 /* Read until either a timeout occurs (-2) or '+' is read.
8336 Handle any notification that arrives in the mean time. */
8339 ch
= readchar (remote_timeout
);
8347 case SERIAL_TIMEOUT
:
8350 if (started_error_output
)
8352 putchar_unfiltered ('\n');
8353 started_error_output
= 0;
8362 fprintf_unfiltered (gdb_stdlog
, "Ack\n");
8363 do_cleanups (old_chain
);
8367 fprintf_unfiltered (gdb_stdlog
, "Nak\n");
8369 case SERIAL_TIMEOUT
:
8373 do_cleanups (old_chain
);
8376 break; /* Retransmit buffer. */
8380 fprintf_unfiltered (gdb_stdlog
,
8381 "Packet instead of Ack, ignoring it\n");
8382 /* It's probably an old response sent because an ACK
8383 was lost. Gobble up the packet and ack it so it
8384 doesn't get retransmitted when we resend this
8387 remote_serial_write ("+", 1);
8388 continue; /* Now, go look for +. */
8395 /* If we got a notification, handle it, and go back to looking
8397 /* We've found the start of a notification. Now
8398 collect the data. */
8399 val
= read_frame (&rs
->buf
, &rs
->buf_size
);
8404 struct cleanup
*old_chain
;
8407 str
= escape_buffer (rs
->buf
, val
);
8408 old_chain
= make_cleanup (xfree
, str
);
8409 fprintf_unfiltered (gdb_stdlog
,
8410 " Notification received: %s\n",
8412 do_cleanups (old_chain
);
8414 handle_notification (rs
->notif_state
, rs
->buf
);
8415 /* We're in sync now, rewait for the ack. */
8422 if (!started_error_output
)
8424 started_error_output
= 1;
8425 fprintf_unfiltered (gdb_stdlog
, "putpkt: Junk: ");
8427 fputc_unfiltered (ch
& 0177, gdb_stdlog
);
8428 fprintf_unfiltered (gdb_stdlog
, "%s", rs
->buf
);
8437 if (!started_error_output
)
8439 started_error_output
= 1;
8440 fprintf_unfiltered (gdb_stdlog
, "putpkt: Junk: ");
8442 fputc_unfiltered (ch
& 0177, gdb_stdlog
);
8446 break; /* Here to retransmit. */
8450 /* This is wrong. If doing a long backtrace, the user should be
8451 able to get out next time we call QUIT, without anything as
8452 violent as interrupt_query. If we want to provide a way out of
8453 here without getting to the next QUIT, it should be based on
8454 hitting ^C twice as in remote_wait. */
8463 do_cleanups (old_chain
);
8467 /* Come here after finding the start of a frame when we expected an
8468 ack. Do our best to discard the rest of this packet. */
8477 c
= readchar (remote_timeout
);
8480 case SERIAL_TIMEOUT
:
8481 /* Nothing we can do. */
8484 /* Discard the two bytes of checksum and stop. */
8485 c
= readchar (remote_timeout
);
8487 c
= readchar (remote_timeout
);
8490 case '*': /* Run length encoding. */
8491 /* Discard the repeat count. */
8492 c
= readchar (remote_timeout
);
8497 /* A regular character. */
8503 /* Come here after finding the start of the frame. Collect the rest
8504 into *BUF, verifying the checksum, length, and handling run-length
8505 compression. NUL terminate the buffer. If there is not enough room,
8506 expand *BUF using xrealloc.
8508 Returns -1 on error, number of characters in buffer (ignoring the
8509 trailing NULL) on success. (could be extended to return one of the
8510 SERIAL status indications). */
8513 read_frame (char **buf_p
,
8520 struct remote_state
*rs
= get_remote_state ();
8527 c
= readchar (remote_timeout
);
8530 case SERIAL_TIMEOUT
:
8532 fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog
);
8536 fputs_filtered ("Saw new packet start in middle of old one\n",
8538 return -1; /* Start a new packet, count retries. */
8541 unsigned char pktcsum
;
8547 check_0
= readchar (remote_timeout
);
8549 check_1
= readchar (remote_timeout
);
8551 if (check_0
== SERIAL_TIMEOUT
|| check_1
== SERIAL_TIMEOUT
)
8554 fputs_filtered ("Timeout in checksum, retrying\n",
8558 else if (check_0
< 0 || check_1
< 0)
8561 fputs_filtered ("Communication error in checksum\n",
8566 /* Don't recompute the checksum; with no ack packets we
8567 don't have any way to indicate a packet retransmission
8572 pktcsum
= (fromhex (check_0
) << 4) | fromhex (check_1
);
8573 if (csum
== pktcsum
)
8578 struct cleanup
*old_chain
;
8581 str
= escape_buffer (buf
, bc
);
8582 old_chain
= make_cleanup (xfree
, str
);
8583 fprintf_unfiltered (gdb_stdlog
,
8584 "Bad checksum, sentsum=0x%x, "
8585 "csum=0x%x, buf=%s\n",
8586 pktcsum
, csum
, str
);
8587 do_cleanups (old_chain
);
8589 /* Number of characters in buffer ignoring trailing
8593 case '*': /* Run length encoding. */
8598 c
= readchar (remote_timeout
);
8600 repeat
= c
- ' ' + 3; /* Compute repeat count. */
8602 /* The character before ``*'' is repeated. */
8604 if (repeat
> 0 && repeat
<= 255 && bc
> 0)
8606 if (bc
+ repeat
- 1 >= *sizeof_buf
- 1)
8608 /* Make some more room in the buffer. */
8609 *sizeof_buf
+= repeat
;
8610 *buf_p
= (char *) xrealloc (*buf_p
, *sizeof_buf
);
8614 memset (&buf
[bc
], buf
[bc
- 1], repeat
);
8620 printf_filtered (_("Invalid run length encoding: %s\n"), buf
);
8624 if (bc
>= *sizeof_buf
- 1)
8626 /* Make some more room in the buffer. */
8628 *buf_p
= (char *) xrealloc (*buf_p
, *sizeof_buf
);
8639 /* Read a packet from the remote machine, with error checking, and
8640 store it in *BUF. Resize *BUF using xrealloc if necessary to hold
8641 the result, and update *SIZEOF_BUF. If FOREVER, wait forever
8642 rather than timing out; this is used (in synchronous mode) to wait
8643 for a target that is is executing user code to stop. */
8644 /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we
8645 don't have to change all the calls to getpkt to deal with the
8646 return value, because at the moment I don't know what the right
8647 thing to do it for those. */
8653 getpkt_sane (buf
, sizeof_buf
, forever
);
8657 /* Read a packet from the remote machine, with error checking, and
8658 store it in *BUF. Resize *BUF using xrealloc if necessary to hold
8659 the result, and update *SIZEOF_BUF. If FOREVER, wait forever
8660 rather than timing out; this is used (in synchronous mode) to wait
8661 for a target that is is executing user code to stop. If FOREVER ==
8662 0, this function is allowed to time out gracefully and return an
8663 indication of this to the caller. Otherwise return the number of
8664 bytes read. If EXPECTING_NOTIF, consider receiving a notification
8665 enough reason to return to the caller. *IS_NOTIF is an output
8666 boolean that indicates whether *BUF holds a notification or not
8667 (a regular packet). */
8670 getpkt_or_notif_sane_1 (char **buf
, long *sizeof_buf
, int forever
,
8671 int expecting_notif
, int *is_notif
)
8673 struct remote_state
*rs
= get_remote_state ();
8679 /* We're reading a new response. Make sure we don't look at a
8680 previously cached response. */
8681 rs
->cached_wait_status
= 0;
8683 strcpy (*buf
, "timeout");
8686 timeout
= watchdog
> 0 ? watchdog
: -1;
8687 else if (expecting_notif
)
8688 timeout
= 0; /* There should already be a char in the buffer. If
8691 timeout
= remote_timeout
;
8695 /* Process any number of notifications, and then return when
8699 /* If we get a timeout or bad checksum, retry up to MAX_TRIES
8701 for (tries
= 1; tries
<= MAX_TRIES
; tries
++)
8703 /* This can loop forever if the remote side sends us
8704 characters continuously, but if it pauses, we'll get
8705 SERIAL_TIMEOUT from readchar because of timeout. Then
8706 we'll count that as a retry.
8708 Note that even when forever is set, we will only wait
8709 forever prior to the start of a packet. After that, we
8710 expect characters to arrive at a brisk pace. They should
8711 show up within remote_timeout intervals. */
8713 c
= readchar (timeout
);
8714 while (c
!= SERIAL_TIMEOUT
&& c
!= '$' && c
!= '%');
8716 if (c
== SERIAL_TIMEOUT
)
8718 if (expecting_notif
)
8719 return -1; /* Don't complain, it's normal to not get
8720 anything in this case. */
8722 if (forever
) /* Watchdog went off? Kill the target. */
8724 remote_unpush_target ();
8725 throw_error (TARGET_CLOSE_ERROR
,
8726 _("Watchdog timeout has expired. "
8727 "Target detached."));
8730 fputs_filtered ("Timed out.\n", gdb_stdlog
);
8734 /* We've found the start of a packet or notification.
8735 Now collect the data. */
8736 val
= read_frame (buf
, sizeof_buf
);
8741 remote_serial_write ("-", 1);
8744 if (tries
> MAX_TRIES
)
8746 /* We have tried hard enough, and just can't receive the
8747 packet/notification. Give up. */
8748 printf_unfiltered (_("Ignoring packet error, continuing...\n"));
8750 /* Skip the ack char if we're in no-ack mode. */
8751 if (!rs
->noack_mode
)
8752 remote_serial_write ("+", 1);
8756 /* If we got an ordinary packet, return that to our caller. */
8761 struct cleanup
*old_chain
;
8764 str
= escape_buffer (*buf
, val
);
8765 old_chain
= make_cleanup (xfree
, str
);
8766 fprintf_unfiltered (gdb_stdlog
, "Packet received: %s\n", str
);
8767 do_cleanups (old_chain
);
8770 /* Skip the ack char if we're in no-ack mode. */
8771 if (!rs
->noack_mode
)
8772 remote_serial_write ("+", 1);
8773 if (is_notif
!= NULL
)
8778 /* If we got a notification, handle it, and go back to looking
8782 gdb_assert (c
== '%');
8786 struct cleanup
*old_chain
;
8789 str
= escape_buffer (*buf
, val
);
8790 old_chain
= make_cleanup (xfree
, str
);
8791 fprintf_unfiltered (gdb_stdlog
,
8792 " Notification received: %s\n",
8794 do_cleanups (old_chain
);
8796 if (is_notif
!= NULL
)
8799 handle_notification (rs
->notif_state
, *buf
);
8801 /* Notifications require no acknowledgement. */
8803 if (expecting_notif
)
8810 getpkt_sane (char **buf
, long *sizeof_buf
, int forever
)
8812 return getpkt_or_notif_sane_1 (buf
, sizeof_buf
, forever
, 0, NULL
);
8816 getpkt_or_notif_sane (char **buf
, long *sizeof_buf
, int forever
,
8819 return getpkt_or_notif_sane_1 (buf
, sizeof_buf
, forever
, 1,
8823 /* Check whether EVENT is a fork event for the process specified
8824 by the pid passed in DATA, and if it is, kill the fork child. */
8827 kill_child_of_pending_fork (QUEUE (stop_reply_p
) *q
,
8828 QUEUE_ITER (stop_reply_p
) *iter
,
8832 struct queue_iter_param
*param
= (struct queue_iter_param
*) data
;
8833 int parent_pid
= *(int *) param
->input
;
8835 if (is_pending_fork_parent (&event
->ws
, parent_pid
, event
->ptid
))
8837 struct remote_state
*rs
= get_remote_state ();
8838 int child_pid
= ptid_get_pid (event
->ws
.value
.related_pid
);
8841 res
= remote_vkill (child_pid
, rs
);
8843 error (_("Can't kill fork child process %d"), child_pid
);
8849 /* Kill any new fork children of process PID that haven't been
8850 processed by follow_fork. */
8853 kill_new_fork_children (int pid
, struct remote_state
*rs
)
8855 struct thread_info
*thread
;
8856 struct notif_client
*notif
= ¬if_client_stop
;
8857 struct queue_iter_param param
;
8859 /* Kill the fork child threads of any threads in process PID
8860 that are stopped at a fork event. */
8861 ALL_NON_EXITED_THREADS (thread
)
8863 struct target_waitstatus
*ws
= &thread
->pending_follow
;
8865 if (is_pending_fork_parent (ws
, pid
, thread
->ptid
))
8867 struct remote_state
*rs
= get_remote_state ();
8868 int child_pid
= ptid_get_pid (ws
->value
.related_pid
);
8871 res
= remote_vkill (child_pid
, rs
);
8873 error (_("Can't kill fork child process %d"), child_pid
);
8877 /* Check for any pending fork events (not reported or processed yet)
8878 in process PID and kill those fork child threads as well. */
8879 remote_notif_get_pending_events (notif
);
8881 param
.output
= NULL
;
8882 QUEUE_iterate (stop_reply_p
, stop_reply_queue
,
8883 kill_child_of_pending_fork
, ¶m
);
8887 /* Target hook to kill the current inferior. */
8890 remote_kill (struct target_ops
*ops
)
8893 int pid
= ptid_get_pid (inferior_ptid
);
8894 struct remote_state
*rs
= get_remote_state ();
8896 if (packet_support (PACKET_vKill
) != PACKET_DISABLE
)
8898 /* If we're stopped while forking and we haven't followed yet,
8899 kill the child task. We need to do this before killing the
8900 parent task because if this is a vfork then the parent will
8902 kill_new_fork_children (pid
, rs
);
8904 res
= remote_vkill (pid
, rs
);
8907 target_mourn_inferior ();
8912 /* If we are in 'target remote' mode and we are killing the only
8913 inferior, then we will tell gdbserver to exit and unpush the
8915 if (res
== -1 && !remote_multi_process_p (rs
)
8916 && number_of_live_inferiors () == 1)
8920 /* We've killed the remote end, we get to mourn it. If we are
8921 not in extended mode, mourning the inferior also unpushes
8922 remote_ops from the target stack, which closes the remote
8924 target_mourn_inferior ();
8929 error (_("Can't kill process"));
8932 /* Send a kill request to the target using the 'vKill' packet. */
8935 remote_vkill (int pid
, struct remote_state
*rs
)
8937 if (packet_support (PACKET_vKill
) == PACKET_DISABLE
)
8940 /* Tell the remote target to detach. */
8941 xsnprintf (rs
->buf
, get_remote_packet_size (), "vKill;%x", pid
);
8943 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8945 switch (packet_ok (rs
->buf
,
8946 &remote_protocol_packets
[PACKET_vKill
]))
8952 case PACKET_UNKNOWN
:
8955 internal_error (__FILE__
, __LINE__
, _("Bad result from packet_ok"));
8959 /* Send a kill request to the target using the 'k' packet. */
8962 remote_kill_k (void)
8964 /* Catch errors so the user can quit from gdb even when we
8965 aren't on speaking terms with the remote system. */
8970 CATCH (ex
, RETURN_MASK_ERROR
)
8972 if (ex
.error
== TARGET_CLOSE_ERROR
)
8974 /* If we got an (EOF) error that caused the target
8975 to go away, then we're done, that's what we wanted.
8976 "k" is susceptible to cause a premature EOF, given
8977 that the remote server isn't actually required to
8978 reply to "k", and it can happen that it doesn't
8979 even get to reply ACK to the "k". */
8983 /* Otherwise, something went wrong. We didn't actually kill
8984 the target. Just propagate the exception, and let the
8985 user or higher layers decide what to do. */
8986 throw_exception (ex
);
8992 remote_mourn (struct target_ops
*target
)
8994 struct remote_state
*rs
= get_remote_state ();
8996 /* In 'target remote' mode with one inferior, we close the connection. */
8997 if (!rs
->extended
&& number_of_live_inferiors () <= 1)
8999 unpush_target (target
);
9001 /* remote_close takes care of doing most of the clean up. */
9002 generic_mourn_inferior ();
9006 /* In case we got here due to an error, but we're going to stay
9008 rs
->waiting_for_stop_reply
= 0;
9010 /* If the current general thread belonged to the process we just
9011 detached from or has exited, the remote side current general
9012 thread becomes undefined. Considering a case like this:
9014 - We just got here due to a detach.
9015 - The process that we're detaching from happens to immediately
9016 report a global breakpoint being hit in non-stop mode, in the
9017 same thread we had selected before.
9018 - GDB attaches to this process again.
9019 - This event happens to be the next event we handle.
9021 GDB would consider that the current general thread didn't need to
9022 be set on the stub side (with Hg), since for all it knew,
9023 GENERAL_THREAD hadn't changed.
9025 Notice that although in all-stop mode, the remote server always
9026 sets the current thread to the thread reporting the stop event,
9027 that doesn't happen in non-stop mode; in non-stop, the stub *must
9028 not* change the current thread when reporting a breakpoint hit,
9029 due to the decoupling of event reporting and event handling.
9031 To keep things simple, we always invalidate our notion of the
9033 record_currthread (rs
, minus_one_ptid
);
9035 /* Call common code to mark the inferior as not running. */
9036 generic_mourn_inferior ();
9038 if (!have_inferiors ())
9040 if (!remote_multi_process_p (rs
))
9042 /* Check whether the target is running now - some remote stubs
9043 automatically restart after kill. */
9045 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9047 if (rs
->buf
[0] == 'S' || rs
->buf
[0] == 'T')
9049 /* Assume that the target has been restarted. Set
9050 inferior_ptid so that bits of core GDB realizes
9051 there's something here, e.g., so that the user can
9052 say "kill" again. */
9053 inferior_ptid
= magic_null_ptid
;
9060 extended_remote_supports_disable_randomization (struct target_ops
*self
)
9062 return packet_support (PACKET_QDisableRandomization
) == PACKET_ENABLE
;
9066 extended_remote_disable_randomization (int val
)
9068 struct remote_state
*rs
= get_remote_state ();
9071 xsnprintf (rs
->buf
, get_remote_packet_size (), "QDisableRandomization:%x",
9074 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
9076 error (_("Target does not support QDisableRandomization."));
9077 if (strcmp (reply
, "OK") != 0)
9078 error (_("Bogus QDisableRandomization reply from target: %s"), reply
);
9082 extended_remote_run (char *args
)
9084 struct remote_state
*rs
= get_remote_state ();
9086 const char *remote_exec_file
= get_remote_exec_file ();
9088 /* If the user has disabled vRun support, or we have detected that
9089 support is not available, do not try it. */
9090 if (packet_support (PACKET_vRun
) == PACKET_DISABLE
)
9093 strcpy (rs
->buf
, "vRun;");
9094 len
= strlen (rs
->buf
);
9096 if (strlen (remote_exec_file
) * 2 + len
>= get_remote_packet_size ())
9097 error (_("Remote file name too long for run packet"));
9098 len
+= 2 * bin2hex ((gdb_byte
*) remote_exec_file
, rs
->buf
+ len
,
9099 strlen (remote_exec_file
));
9101 gdb_assert (args
!= NULL
);
9104 struct cleanup
*back_to
;
9108 argv
= gdb_buildargv (args
);
9109 back_to
= make_cleanup_freeargv (argv
);
9110 for (i
= 0; argv
[i
] != NULL
; i
++)
9112 if (strlen (argv
[i
]) * 2 + 1 + len
>= get_remote_packet_size ())
9113 error (_("Argument list too long for run packet"));
9114 rs
->buf
[len
++] = ';';
9115 len
+= 2 * bin2hex ((gdb_byte
*) argv
[i
], rs
->buf
+ len
,
9118 do_cleanups (back_to
);
9121 rs
->buf
[len
++] = '\0';
9124 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9126 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_vRun
]))
9129 /* We have a wait response. All is well. */
9131 case PACKET_UNKNOWN
:
9134 if (remote_exec_file
[0] == '\0')
9135 error (_("Running the default executable on the remote target failed; "
9136 "try \"set remote exec-file\"?"));
9138 error (_("Running \"%s\" on the remote target failed"),
9141 gdb_assert_not_reached (_("bad switch"));
9145 /* In the extended protocol we want to be able to do things like
9146 "run" and have them basically work as expected. So we need
9147 a special create_inferior function. We support changing the
9148 executable file and the command line arguments, but not the
9152 extended_remote_create_inferior (struct target_ops
*ops
,
9153 char *exec_file
, char *args
,
9154 char **env
, int from_tty
)
9158 struct remote_state
*rs
= get_remote_state ();
9159 const char *remote_exec_file
= get_remote_exec_file ();
9161 /* If running asynchronously, register the target file descriptor
9162 with the event loop. */
9163 if (target_can_async_p ())
9166 /* Disable address space randomization if requested (and supported). */
9167 if (extended_remote_supports_disable_randomization (ops
))
9168 extended_remote_disable_randomization (disable_randomization
);
9170 /* Now restart the remote server. */
9171 run_worked
= extended_remote_run (args
) != -1;
9174 /* vRun was not supported. Fail if we need it to do what the
9176 if (remote_exec_file
[0])
9177 error (_("Remote target does not support \"set remote exec-file\""));
9179 error (_("Remote target does not support \"set args\" or run <ARGS>"));
9181 /* Fall back to "R". */
9182 extended_remote_restart ();
9185 if (!have_inferiors ())
9187 /* Clean up from the last time we ran, before we mark the target
9188 running again. This will mark breakpoints uninserted, and
9189 get_offsets may insert breakpoints. */
9190 init_thread_list ();
9191 init_wait_for_inferior ();
9194 /* vRun's success return is a stop reply. */
9195 stop_reply
= run_worked
? rs
->buf
: NULL
;
9196 add_current_inferior_and_thread (stop_reply
);
9198 /* Get updated offsets, if the stub uses qOffsets. */
9203 /* Given a location's target info BP_TGT and the packet buffer BUF, output
9204 the list of conditions (in agent expression bytecode format), if any, the
9205 target needs to evaluate. The output is placed into the packet buffer
9206 started from BUF and ended at BUF_END. */
9209 remote_add_target_side_condition (struct gdbarch
*gdbarch
,
9210 struct bp_target_info
*bp_tgt
, char *buf
,
9213 struct agent_expr
*aexpr
= NULL
;
9216 if (VEC_empty (agent_expr_p
, bp_tgt
->conditions
))
9219 buf
+= strlen (buf
);
9220 xsnprintf (buf
, buf_end
- buf
, "%s", ";");
9223 /* Send conditions to the target and free the vector. */
9225 VEC_iterate (agent_expr_p
, bp_tgt
->conditions
, ix
, aexpr
);
9228 xsnprintf (buf
, buf_end
- buf
, "X%x,", aexpr
->len
);
9229 buf
+= strlen (buf
);
9230 for (i
= 0; i
< aexpr
->len
; ++i
)
9231 buf
= pack_hex_byte (buf
, aexpr
->buf
[i
]);
9238 remote_add_target_side_commands (struct gdbarch
*gdbarch
,
9239 struct bp_target_info
*bp_tgt
, char *buf
)
9241 struct agent_expr
*aexpr
= NULL
;
9244 if (VEC_empty (agent_expr_p
, bp_tgt
->tcommands
))
9247 buf
+= strlen (buf
);
9249 sprintf (buf
, ";cmds:%x,", bp_tgt
->persist
);
9250 buf
+= strlen (buf
);
9252 /* Concatenate all the agent expressions that are commands into the
9255 VEC_iterate (agent_expr_p
, bp_tgt
->tcommands
, ix
, aexpr
);
9258 sprintf (buf
, "X%x,", aexpr
->len
);
9259 buf
+= strlen (buf
);
9260 for (i
= 0; i
< aexpr
->len
; ++i
)
9261 buf
= pack_hex_byte (buf
, aexpr
->buf
[i
]);
9266 /* Insert a breakpoint. On targets that have software breakpoint
9267 support, we ask the remote target to do the work; on targets
9268 which don't, we insert a traditional memory breakpoint. */
9271 remote_insert_breakpoint (struct target_ops
*ops
,
9272 struct gdbarch
*gdbarch
,
9273 struct bp_target_info
*bp_tgt
)
9275 /* Try the "Z" s/w breakpoint packet if it is not already disabled.
9276 If it succeeds, then set the support to PACKET_ENABLE. If it
9277 fails, and the user has explicitly requested the Z support then
9278 report an error, otherwise, mark it disabled and go on. */
9280 if (packet_support (PACKET_Z0
) != PACKET_DISABLE
)
9282 CORE_ADDR addr
= bp_tgt
->reqstd_address
;
9283 struct remote_state
*rs
;
9287 /* Make sure the remote is pointing at the right process, if
9289 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
9290 set_general_process ();
9292 gdbarch_remote_breakpoint_from_pc (gdbarch
, &addr
, &bpsize
);
9294 rs
= get_remote_state ();
9296 endbuf
= rs
->buf
+ get_remote_packet_size ();
9301 addr
= (ULONGEST
) remote_address_masked (addr
);
9302 p
+= hexnumstr (p
, addr
);
9303 xsnprintf (p
, endbuf
- p
, ",%d", bpsize
);
9305 if (remote_supports_cond_breakpoints (ops
))
9306 remote_add_target_side_condition (gdbarch
, bp_tgt
, p
, endbuf
);
9308 if (remote_can_run_breakpoint_commands (ops
))
9309 remote_add_target_side_commands (gdbarch
, bp_tgt
, p
);
9312 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9314 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
]))
9319 bp_tgt
->placed_address
= addr
;
9320 bp_tgt
->placed_size
= bpsize
;
9322 case PACKET_UNKNOWN
:
9327 /* If this breakpoint has target-side commands but this stub doesn't
9328 support Z0 packets, throw error. */
9329 if (!VEC_empty (agent_expr_p
, bp_tgt
->tcommands
))
9330 throw_error (NOT_SUPPORTED_ERROR
, _("\
9331 Target doesn't support breakpoints that have target side commands."));
9333 return memory_insert_breakpoint (ops
, gdbarch
, bp_tgt
);
9337 remote_remove_breakpoint (struct target_ops
*ops
,
9338 struct gdbarch
*gdbarch
,
9339 struct bp_target_info
*bp_tgt
)
9341 CORE_ADDR addr
= bp_tgt
->placed_address
;
9342 struct remote_state
*rs
= get_remote_state ();
9344 if (packet_support (PACKET_Z0
) != PACKET_DISABLE
)
9347 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
9349 /* Make sure the remote is pointing at the right process, if
9351 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
9352 set_general_process ();
9358 addr
= (ULONGEST
) remote_address_masked (bp_tgt
->placed_address
);
9359 p
+= hexnumstr (p
, addr
);
9360 xsnprintf (p
, endbuf
- p
, ",%d", bp_tgt
->placed_size
);
9363 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9365 return (rs
->buf
[0] == 'E');
9368 return memory_remove_breakpoint (ops
, gdbarch
, bp_tgt
);
9371 static enum Z_packet_type
9372 watchpoint_to_Z_packet (int type
)
9377 return Z_PACKET_WRITE_WP
;
9380 return Z_PACKET_READ_WP
;
9383 return Z_PACKET_ACCESS_WP
;
9386 internal_error (__FILE__
, __LINE__
,
9387 _("hw_bp_to_z: bad watchpoint type %d"), type
);
9392 remote_insert_watchpoint (struct target_ops
*self
, CORE_ADDR addr
, int len
,
9393 enum target_hw_bp_type type
, struct expression
*cond
)
9395 struct remote_state
*rs
= get_remote_state ();
9396 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
9398 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
9400 if (packet_support (PACKET_Z0
+ packet
) == PACKET_DISABLE
)
9403 /* Make sure the remote is pointing at the right process, if
9405 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
9406 set_general_process ();
9408 xsnprintf (rs
->buf
, endbuf
- rs
->buf
, "Z%x,", packet
);
9409 p
= strchr (rs
->buf
, '\0');
9410 addr
= remote_address_masked (addr
);
9411 p
+= hexnumstr (p
, (ULONGEST
) addr
);
9412 xsnprintf (p
, endbuf
- p
, ",%x", len
);
9415 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9417 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
+ packet
]))
9421 case PACKET_UNKNOWN
:
9426 internal_error (__FILE__
, __LINE__
,
9427 _("remote_insert_watchpoint: reached end of function"));
9431 remote_watchpoint_addr_within_range (struct target_ops
*target
, CORE_ADDR addr
,
9432 CORE_ADDR start
, int length
)
9434 CORE_ADDR diff
= remote_address_masked (addr
- start
);
9436 return diff
< length
;
9441 remote_remove_watchpoint (struct target_ops
*self
, CORE_ADDR addr
, int len
,
9442 enum target_hw_bp_type type
, struct expression
*cond
)
9444 struct remote_state
*rs
= get_remote_state ();
9445 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
9447 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
9449 if (packet_support (PACKET_Z0
+ packet
) == PACKET_DISABLE
)
9452 /* Make sure the remote is pointing at the right process, if
9454 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
9455 set_general_process ();
9457 xsnprintf (rs
->buf
, endbuf
- rs
->buf
, "z%x,", packet
);
9458 p
= strchr (rs
->buf
, '\0');
9459 addr
= remote_address_masked (addr
);
9460 p
+= hexnumstr (p
, (ULONGEST
) addr
);
9461 xsnprintf (p
, endbuf
- p
, ",%x", len
);
9463 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9465 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
+ packet
]))
9468 case PACKET_UNKNOWN
:
9473 internal_error (__FILE__
, __LINE__
,
9474 _("remote_remove_watchpoint: reached end of function"));
9478 int remote_hw_watchpoint_limit
= -1;
9479 int remote_hw_watchpoint_length_limit
= -1;
9480 int remote_hw_breakpoint_limit
= -1;
9483 remote_region_ok_for_hw_watchpoint (struct target_ops
*self
,
9484 CORE_ADDR addr
, int len
)
9486 if (remote_hw_watchpoint_length_limit
== 0)
9488 else if (remote_hw_watchpoint_length_limit
< 0)
9490 else if (len
<= remote_hw_watchpoint_length_limit
)
9497 remote_check_watch_resources (struct target_ops
*self
,
9498 enum bptype type
, int cnt
, int ot
)
9500 if (type
== bp_hardware_breakpoint
)
9502 if (remote_hw_breakpoint_limit
== 0)
9504 else if (remote_hw_breakpoint_limit
< 0)
9506 else if (cnt
<= remote_hw_breakpoint_limit
)
9511 if (remote_hw_watchpoint_limit
== 0)
9513 else if (remote_hw_watchpoint_limit
< 0)
9517 else if (cnt
<= remote_hw_watchpoint_limit
)
9523 /* The to_stopped_by_sw_breakpoint method of target remote. */
9526 remote_stopped_by_sw_breakpoint (struct target_ops
*ops
)
9528 struct thread_info
*thread
= inferior_thread ();
9530 return (thread
->priv
!= NULL
9531 && thread
->priv
->stop_reason
== TARGET_STOPPED_BY_SW_BREAKPOINT
);
9534 /* The to_supports_stopped_by_sw_breakpoint method of target
9538 remote_supports_stopped_by_sw_breakpoint (struct target_ops
*ops
)
9540 return (packet_support (PACKET_swbreak_feature
) == PACKET_ENABLE
);
9543 /* The to_stopped_by_hw_breakpoint method of target remote. */
9546 remote_stopped_by_hw_breakpoint (struct target_ops
*ops
)
9548 struct thread_info
*thread
= inferior_thread ();
9550 return (thread
->priv
!= NULL
9551 && thread
->priv
->stop_reason
== TARGET_STOPPED_BY_HW_BREAKPOINT
);
9554 /* The to_supports_stopped_by_hw_breakpoint method of target
9558 remote_supports_stopped_by_hw_breakpoint (struct target_ops
*ops
)
9560 return (packet_support (PACKET_hwbreak_feature
) == PACKET_ENABLE
);
9564 remote_stopped_by_watchpoint (struct target_ops
*ops
)
9566 struct thread_info
*thread
= inferior_thread ();
9568 return (thread
->priv
!= NULL
9569 && thread
->priv
->stop_reason
== TARGET_STOPPED_BY_WATCHPOINT
);
9573 remote_stopped_data_address (struct target_ops
*target
, CORE_ADDR
*addr_p
)
9575 struct thread_info
*thread
= inferior_thread ();
9577 if (thread
->priv
!= NULL
9578 && thread
->priv
->stop_reason
== TARGET_STOPPED_BY_WATCHPOINT
)
9580 *addr_p
= thread
->priv
->watch_data_address
;
9589 remote_insert_hw_breakpoint (struct target_ops
*self
, struct gdbarch
*gdbarch
,
9590 struct bp_target_info
*bp_tgt
)
9592 CORE_ADDR addr
= bp_tgt
->reqstd_address
;
9593 struct remote_state
*rs
;
9598 /* The length field should be set to the size of a breakpoint
9599 instruction, even though we aren't inserting one ourselves. */
9601 gdbarch_remote_breakpoint_from_pc (gdbarch
, &addr
, &bpsize
);
9603 if (packet_support (PACKET_Z1
) == PACKET_DISABLE
)
9606 /* Make sure the remote is pointing at the right process, if
9608 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
9609 set_general_process ();
9611 rs
= get_remote_state ();
9613 endbuf
= rs
->buf
+ get_remote_packet_size ();
9619 addr
= remote_address_masked (addr
);
9620 p
+= hexnumstr (p
, (ULONGEST
) addr
);
9621 xsnprintf (p
, endbuf
- p
, ",%x", bpsize
);
9623 if (remote_supports_cond_breakpoints (self
))
9624 remote_add_target_side_condition (gdbarch
, bp_tgt
, p
, endbuf
);
9626 if (remote_can_run_breakpoint_commands (self
))
9627 remote_add_target_side_commands (gdbarch
, bp_tgt
, p
);
9630 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9632 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z1
]))
9635 if (rs
->buf
[1] == '.')
9637 message
= strchr (rs
->buf
+ 2, '.');
9639 error (_("Remote failure reply: %s"), message
+ 1);
9642 case PACKET_UNKNOWN
:
9645 bp_tgt
->placed_address
= addr
;
9646 bp_tgt
->placed_size
= bpsize
;
9649 internal_error (__FILE__
, __LINE__
,
9650 _("remote_insert_hw_breakpoint: reached end of function"));
9655 remote_remove_hw_breakpoint (struct target_ops
*self
, struct gdbarch
*gdbarch
,
9656 struct bp_target_info
*bp_tgt
)
9659 struct remote_state
*rs
= get_remote_state ();
9661 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
9663 if (packet_support (PACKET_Z1
) == PACKET_DISABLE
)
9666 /* Make sure the remote is pointing at the right process, if
9668 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
9669 set_general_process ();
9675 addr
= remote_address_masked (bp_tgt
->placed_address
);
9676 p
+= hexnumstr (p
, (ULONGEST
) addr
);
9677 xsnprintf (p
, endbuf
- p
, ",%x", bp_tgt
->placed_size
);
9680 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9682 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z1
]))
9685 case PACKET_UNKNOWN
:
9690 internal_error (__FILE__
, __LINE__
,
9691 _("remote_remove_hw_breakpoint: reached end of function"));
9694 /* Verify memory using the "qCRC:" request. */
9697 remote_verify_memory (struct target_ops
*ops
,
9698 const gdb_byte
*data
, CORE_ADDR lma
, ULONGEST size
)
9700 struct remote_state
*rs
= get_remote_state ();
9701 unsigned long host_crc
, target_crc
;
9704 /* It doesn't make sense to use qCRC if the remote target is
9705 connected but not running. */
9706 if (target_has_execution
&& packet_support (PACKET_qCRC
) != PACKET_DISABLE
)
9708 enum packet_result result
;
9710 /* Make sure the remote is pointing at the right process. */
9711 set_general_process ();
9713 /* FIXME: assumes lma can fit into long. */
9714 xsnprintf (rs
->buf
, get_remote_packet_size (), "qCRC:%lx,%lx",
9715 (long) lma
, (long) size
);
9718 /* Be clever; compute the host_crc before waiting for target
9720 host_crc
= xcrc32 (data
, size
, 0xffffffff);
9722 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9724 result
= packet_ok (rs
->buf
,
9725 &remote_protocol_packets
[PACKET_qCRC
]);
9726 if (result
== PACKET_ERROR
)
9728 else if (result
== PACKET_OK
)
9730 for (target_crc
= 0, tmp
= &rs
->buf
[1]; *tmp
; tmp
++)
9731 target_crc
= target_crc
* 16 + fromhex (*tmp
);
9733 return (host_crc
== target_crc
);
9737 return simple_verify_memory (ops
, data
, lma
, size
);
9740 /* compare-sections command
9742 With no arguments, compares each loadable section in the exec bfd
9743 with the same memory range on the target, and reports mismatches.
9744 Useful for verifying the image on the target against the exec file. */
9747 compare_sections_command (char *args
, int from_tty
)
9750 struct cleanup
*old_chain
;
9752 const char *sectname
;
9761 error (_("command cannot be used without an exec file"));
9763 /* Make sure the remote is pointing at the right process. */
9764 set_general_process ();
9766 if (args
!= NULL
&& strcmp (args
, "-r") == 0)
9772 for (s
= exec_bfd
->sections
; s
; s
= s
->next
)
9774 if (!(s
->flags
& SEC_LOAD
))
9775 continue; /* Skip non-loadable section. */
9777 if (read_only
&& (s
->flags
& SEC_READONLY
) == 0)
9778 continue; /* Skip writeable sections */
9780 size
= bfd_get_section_size (s
);
9782 continue; /* Skip zero-length section. */
9784 sectname
= bfd_get_section_name (exec_bfd
, s
);
9785 if (args
&& strcmp (args
, sectname
) != 0)
9786 continue; /* Not the section selected by user. */
9788 matched
= 1; /* Do this section. */
9791 sectdata
= (gdb_byte
*) xmalloc (size
);
9792 old_chain
= make_cleanup (xfree
, sectdata
);
9793 bfd_get_section_contents (exec_bfd
, s
, sectdata
, 0, size
);
9795 res
= target_verify_memory (sectdata
, lma
, size
);
9798 error (_("target memory fault, section %s, range %s -- %s"), sectname
,
9799 paddress (target_gdbarch (), lma
),
9800 paddress (target_gdbarch (), lma
+ size
));
9802 printf_filtered ("Section %s, range %s -- %s: ", sectname
,
9803 paddress (target_gdbarch (), lma
),
9804 paddress (target_gdbarch (), lma
+ size
));
9806 printf_filtered ("matched.\n");
9809 printf_filtered ("MIS-MATCHED!\n");
9813 do_cleanups (old_chain
);
9816 warning (_("One or more sections of the target image does not match\n\
9817 the loaded file\n"));
9818 if (args
&& !matched
)
9819 printf_filtered (_("No loaded section named '%s'.\n"), args
);
9822 /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET
9823 into remote target. The number of bytes written to the remote
9824 target is returned, or -1 for error. */
9826 static enum target_xfer_status
9827 remote_write_qxfer (struct target_ops
*ops
, const char *object_name
,
9828 const char *annex
, const gdb_byte
*writebuf
,
9829 ULONGEST offset
, LONGEST len
, ULONGEST
*xfered_len
,
9830 struct packet_config
*packet
)
9834 struct remote_state
*rs
= get_remote_state ();
9835 int max_size
= get_memory_write_packet_size ();
9837 if (packet
->support
== PACKET_DISABLE
)
9838 return TARGET_XFER_E_IO
;
9840 /* Insert header. */
9841 i
= snprintf (rs
->buf
, max_size
,
9842 "qXfer:%s:write:%s:%s:",
9843 object_name
, annex
? annex
: "",
9844 phex_nz (offset
, sizeof offset
));
9845 max_size
-= (i
+ 1);
9847 /* Escape as much data as fits into rs->buf. */
9848 buf_len
= remote_escape_output
9849 (writebuf
, len
, 1, (gdb_byte
*) rs
->buf
+ i
, &max_size
, max_size
);
9851 if (putpkt_binary (rs
->buf
, i
+ buf_len
) < 0
9852 || getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) < 0
9853 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
9854 return TARGET_XFER_E_IO
;
9856 unpack_varlen_hex (rs
->buf
, &n
);
9859 return TARGET_XFER_OK
;
9862 /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet.
9863 Data at OFFSET, of up to LEN bytes, is read into READBUF; the
9864 number of bytes read is returned, or 0 for EOF, or -1 for error.
9865 The number of bytes read may be less than LEN without indicating an
9866 EOF. PACKET is checked and updated to indicate whether the remote
9867 target supports this object. */
9869 static enum target_xfer_status
9870 remote_read_qxfer (struct target_ops
*ops
, const char *object_name
,
9872 gdb_byte
*readbuf
, ULONGEST offset
, LONGEST len
,
9873 ULONGEST
*xfered_len
,
9874 struct packet_config
*packet
)
9876 struct remote_state
*rs
= get_remote_state ();
9877 LONGEST i
, n
, packet_len
;
9879 if (packet
->support
== PACKET_DISABLE
)
9880 return TARGET_XFER_E_IO
;
9882 /* Check whether we've cached an end-of-object packet that matches
9884 if (rs
->finished_object
)
9886 if (strcmp (object_name
, rs
->finished_object
) == 0
9887 && strcmp (annex
? annex
: "", rs
->finished_annex
) == 0
9888 && offset
== rs
->finished_offset
)
9889 return TARGET_XFER_EOF
;
9892 /* Otherwise, we're now reading something different. Discard
9894 xfree (rs
->finished_object
);
9895 xfree (rs
->finished_annex
);
9896 rs
->finished_object
= NULL
;
9897 rs
->finished_annex
= NULL
;
9900 /* Request only enough to fit in a single packet. The actual data
9901 may not, since we don't know how much of it will need to be escaped;
9902 the target is free to respond with slightly less data. We subtract
9903 five to account for the response type and the protocol frame. */
9904 n
= min (get_remote_packet_size () - 5, len
);
9905 snprintf (rs
->buf
, get_remote_packet_size () - 4, "qXfer:%s:read:%s:%s,%s",
9906 object_name
, annex
? annex
: "",
9907 phex_nz (offset
, sizeof offset
),
9908 phex_nz (n
, sizeof n
));
9909 i
= putpkt (rs
->buf
);
9911 return TARGET_XFER_E_IO
;
9914 packet_len
= getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0);
9915 if (packet_len
< 0 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
9916 return TARGET_XFER_E_IO
;
9918 if (rs
->buf
[0] != 'l' && rs
->buf
[0] != 'm')
9919 error (_("Unknown remote qXfer reply: %s"), rs
->buf
);
9921 /* 'm' means there is (or at least might be) more data after this
9922 batch. That does not make sense unless there's at least one byte
9923 of data in this reply. */
9924 if (rs
->buf
[0] == 'm' && packet_len
== 1)
9925 error (_("Remote qXfer reply contained no data."));
9927 /* Got some data. */
9928 i
= remote_unescape_input ((gdb_byte
*) rs
->buf
+ 1,
9929 packet_len
- 1, readbuf
, n
);
9931 /* 'l' is an EOF marker, possibly including a final block of data,
9932 or possibly empty. If we have the final block of a non-empty
9933 object, record this fact to bypass a subsequent partial read. */
9934 if (rs
->buf
[0] == 'l' && offset
+ i
> 0)
9936 rs
->finished_object
= xstrdup (object_name
);
9937 rs
->finished_annex
= xstrdup (annex
? annex
: "");
9938 rs
->finished_offset
= offset
+ i
;
9942 return TARGET_XFER_EOF
;
9946 return TARGET_XFER_OK
;
9950 static enum target_xfer_status
9951 remote_xfer_partial (struct target_ops
*ops
, enum target_object object
,
9952 const char *annex
, gdb_byte
*readbuf
,
9953 const gdb_byte
*writebuf
, ULONGEST offset
, ULONGEST len
,
9954 ULONGEST
*xfered_len
)
9956 struct remote_state
*rs
;
9960 int unit_size
= gdbarch_addressable_memory_unit_size (target_gdbarch ());
9962 set_remote_traceframe ();
9963 set_general_thread (inferior_ptid
);
9965 rs
= get_remote_state ();
9967 /* Handle memory using the standard memory routines. */
9968 if (object
== TARGET_OBJECT_MEMORY
)
9970 /* If the remote target is connected but not running, we should
9971 pass this request down to a lower stratum (e.g. the executable
9973 if (!target_has_execution
)
9974 return TARGET_XFER_EOF
;
9976 if (writebuf
!= NULL
)
9977 return remote_write_bytes (offset
, writebuf
, len
, unit_size
,
9980 return remote_read_bytes (ops
, offset
, readbuf
, len
, unit_size
,
9984 /* Handle SPU memory using qxfer packets. */
9985 if (object
== TARGET_OBJECT_SPU
)
9988 return remote_read_qxfer (ops
, "spu", annex
, readbuf
, offset
, len
,
9989 xfered_len
, &remote_protocol_packets
9990 [PACKET_qXfer_spu_read
]);
9992 return remote_write_qxfer (ops
, "spu", annex
, writebuf
, offset
, len
,
9993 xfered_len
, &remote_protocol_packets
9994 [PACKET_qXfer_spu_write
]);
9997 /* Handle extra signal info using qxfer packets. */
9998 if (object
== TARGET_OBJECT_SIGNAL_INFO
)
10001 return remote_read_qxfer (ops
, "siginfo", annex
, readbuf
, offset
, len
,
10002 xfered_len
, &remote_protocol_packets
10003 [PACKET_qXfer_siginfo_read
]);
10005 return remote_write_qxfer (ops
, "siginfo", annex
,
10006 writebuf
, offset
, len
, xfered_len
,
10007 &remote_protocol_packets
10008 [PACKET_qXfer_siginfo_write
]);
10011 if (object
== TARGET_OBJECT_STATIC_TRACE_DATA
)
10014 return remote_read_qxfer (ops
, "statictrace", annex
,
10015 readbuf
, offset
, len
, xfered_len
,
10016 &remote_protocol_packets
10017 [PACKET_qXfer_statictrace_read
]);
10019 return TARGET_XFER_E_IO
;
10022 /* Only handle flash writes. */
10023 if (writebuf
!= NULL
)
10027 case TARGET_OBJECT_FLASH
:
10028 return remote_flash_write (ops
, offset
, len
, xfered_len
,
10032 return TARGET_XFER_E_IO
;
10036 /* Map pre-existing objects onto letters. DO NOT do this for new
10037 objects!!! Instead specify new query packets. */
10040 case TARGET_OBJECT_AVR
:
10044 case TARGET_OBJECT_AUXV
:
10045 gdb_assert (annex
== NULL
);
10046 return remote_read_qxfer (ops
, "auxv", annex
, readbuf
, offset
, len
,
10048 &remote_protocol_packets
[PACKET_qXfer_auxv
]);
10050 case TARGET_OBJECT_AVAILABLE_FEATURES
:
10051 return remote_read_qxfer
10052 (ops
, "features", annex
, readbuf
, offset
, len
, xfered_len
,
10053 &remote_protocol_packets
[PACKET_qXfer_features
]);
10055 case TARGET_OBJECT_LIBRARIES
:
10056 return remote_read_qxfer
10057 (ops
, "libraries", annex
, readbuf
, offset
, len
, xfered_len
,
10058 &remote_protocol_packets
[PACKET_qXfer_libraries
]);
10060 case TARGET_OBJECT_LIBRARIES_SVR4
:
10061 return remote_read_qxfer
10062 (ops
, "libraries-svr4", annex
, readbuf
, offset
, len
, xfered_len
,
10063 &remote_protocol_packets
[PACKET_qXfer_libraries_svr4
]);
10065 case TARGET_OBJECT_MEMORY_MAP
:
10066 gdb_assert (annex
== NULL
);
10067 return remote_read_qxfer (ops
, "memory-map", annex
, readbuf
, offset
, len
,
10069 &remote_protocol_packets
[PACKET_qXfer_memory_map
]);
10071 case TARGET_OBJECT_OSDATA
:
10072 /* Should only get here if we're connected. */
10073 gdb_assert (rs
->remote_desc
);
10074 return remote_read_qxfer
10075 (ops
, "osdata", annex
, readbuf
, offset
, len
, xfered_len
,
10076 &remote_protocol_packets
[PACKET_qXfer_osdata
]);
10078 case TARGET_OBJECT_THREADS
:
10079 gdb_assert (annex
== NULL
);
10080 return remote_read_qxfer (ops
, "threads", annex
, readbuf
, offset
, len
,
10082 &remote_protocol_packets
[PACKET_qXfer_threads
]);
10084 case TARGET_OBJECT_TRACEFRAME_INFO
:
10085 gdb_assert (annex
== NULL
);
10086 return remote_read_qxfer
10087 (ops
, "traceframe-info", annex
, readbuf
, offset
, len
, xfered_len
,
10088 &remote_protocol_packets
[PACKET_qXfer_traceframe_info
]);
10090 case TARGET_OBJECT_FDPIC
:
10091 return remote_read_qxfer (ops
, "fdpic", annex
, readbuf
, offset
, len
,
10093 &remote_protocol_packets
[PACKET_qXfer_fdpic
]);
10095 case TARGET_OBJECT_OPENVMS_UIB
:
10096 return remote_read_qxfer (ops
, "uib", annex
, readbuf
, offset
, len
,
10098 &remote_protocol_packets
[PACKET_qXfer_uib
]);
10100 case TARGET_OBJECT_BTRACE
:
10101 return remote_read_qxfer (ops
, "btrace", annex
, readbuf
, offset
, len
,
10103 &remote_protocol_packets
[PACKET_qXfer_btrace
]);
10105 case TARGET_OBJECT_BTRACE_CONF
:
10106 return remote_read_qxfer (ops
, "btrace-conf", annex
, readbuf
, offset
,
10108 &remote_protocol_packets
[PACKET_qXfer_btrace_conf
]);
10110 case TARGET_OBJECT_EXEC_FILE
:
10111 return remote_read_qxfer (ops
, "exec-file", annex
, readbuf
, offset
,
10113 &remote_protocol_packets
[PACKET_qXfer_exec_file
]);
10116 return TARGET_XFER_E_IO
;
10119 /* Minimum outbuf size is get_remote_packet_size (). If LEN is not
10120 large enough let the caller deal with it. */
10121 if (len
< get_remote_packet_size ())
10122 return TARGET_XFER_E_IO
;
10123 len
= get_remote_packet_size ();
10125 /* Except for querying the minimum buffer size, target must be open. */
10126 if (!rs
->remote_desc
)
10127 error (_("remote query is only available after target open"));
10129 gdb_assert (annex
!= NULL
);
10130 gdb_assert (readbuf
!= NULL
);
10134 *p2
++ = query_type
;
10136 /* We used one buffer char for the remote protocol q command and
10137 another for the query type. As the remote protocol encapsulation
10138 uses 4 chars plus one extra in case we are debugging
10139 (remote_debug), we have PBUFZIZ - 7 left to pack the query
10142 while (annex
[i
] && (i
< (get_remote_packet_size () - 8)))
10144 /* Bad caller may have sent forbidden characters. */
10145 gdb_assert (isprint (annex
[i
]) && annex
[i
] != '$' && annex
[i
] != '#');
10150 gdb_assert (annex
[i
] == '\0');
10152 i
= putpkt (rs
->buf
);
10154 return TARGET_XFER_E_IO
;
10156 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
10157 strcpy ((char *) readbuf
, rs
->buf
);
10159 *xfered_len
= strlen ((char *) readbuf
);
10160 return TARGET_XFER_OK
;
10164 remote_search_memory (struct target_ops
* ops
,
10165 CORE_ADDR start_addr
, ULONGEST search_space_len
,
10166 const gdb_byte
*pattern
, ULONGEST pattern_len
,
10167 CORE_ADDR
*found_addrp
)
10169 int addr_size
= gdbarch_addr_bit (target_gdbarch ()) / 8;
10170 struct remote_state
*rs
= get_remote_state ();
10171 int max_size
= get_memory_write_packet_size ();
10172 struct packet_config
*packet
=
10173 &remote_protocol_packets
[PACKET_qSearch_memory
];
10174 /* Number of packet bytes used to encode the pattern;
10175 this could be more than PATTERN_LEN due to escape characters. */
10176 int escaped_pattern_len
;
10177 /* Amount of pattern that was encodable in the packet. */
10178 int used_pattern_len
;
10181 ULONGEST found_addr
;
10183 /* Don't go to the target if we don't have to.
10184 This is done before checking packet->support to avoid the possibility that
10185 a success for this edge case means the facility works in general. */
10186 if (pattern_len
> search_space_len
)
10188 if (pattern_len
== 0)
10190 *found_addrp
= start_addr
;
10194 /* If we already know the packet isn't supported, fall back to the simple
10195 way of searching memory. */
10197 if (packet_config_support (packet
) == PACKET_DISABLE
)
10199 /* Target doesn't provided special support, fall back and use the
10200 standard support (copy memory and do the search here). */
10201 return simple_search_memory (ops
, start_addr
, search_space_len
,
10202 pattern
, pattern_len
, found_addrp
);
10205 /* Make sure the remote is pointing at the right process. */
10206 set_general_process ();
10208 /* Insert header. */
10209 i
= snprintf (rs
->buf
, max_size
,
10210 "qSearch:memory:%s;%s;",
10211 phex_nz (start_addr
, addr_size
),
10212 phex_nz (search_space_len
, sizeof (search_space_len
)));
10213 max_size
-= (i
+ 1);
10215 /* Escape as much data as fits into rs->buf. */
10216 escaped_pattern_len
=
10217 remote_escape_output (pattern
, pattern_len
, 1, (gdb_byte
*) rs
->buf
+ i
,
10218 &used_pattern_len
, max_size
);
10220 /* Bail if the pattern is too large. */
10221 if (used_pattern_len
!= pattern_len
)
10222 error (_("Pattern is too large to transmit to remote target."));
10224 if (putpkt_binary (rs
->buf
, i
+ escaped_pattern_len
) < 0
10225 || getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) < 0
10226 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
10228 /* The request may not have worked because the command is not
10229 supported. If so, fall back to the simple way. */
10230 if (packet
->support
== PACKET_DISABLE
)
10232 return simple_search_memory (ops
, start_addr
, search_space_len
,
10233 pattern
, pattern_len
, found_addrp
);
10238 if (rs
->buf
[0] == '0')
10240 else if (rs
->buf
[0] == '1')
10243 if (rs
->buf
[1] != ',')
10244 error (_("Unknown qSearch:memory reply: %s"), rs
->buf
);
10245 unpack_varlen_hex (rs
->buf
+ 2, &found_addr
);
10246 *found_addrp
= found_addr
;
10249 error (_("Unknown qSearch:memory reply: %s"), rs
->buf
);
10255 remote_rcmd (struct target_ops
*self
, const char *command
,
10256 struct ui_file
*outbuf
)
10258 struct remote_state
*rs
= get_remote_state ();
10261 if (!rs
->remote_desc
)
10262 error (_("remote rcmd is only available after target open"));
10264 /* Send a NULL command across as an empty command. */
10265 if (command
== NULL
)
10268 /* The query prefix. */
10269 strcpy (rs
->buf
, "qRcmd,");
10270 p
= strchr (rs
->buf
, '\0');
10272 if ((strlen (rs
->buf
) + strlen (command
) * 2 + 8/*misc*/)
10273 > get_remote_packet_size ())
10274 error (_("\"monitor\" command ``%s'' is too long."), command
);
10276 /* Encode the actual command. */
10277 bin2hex ((const gdb_byte
*) command
, p
, strlen (command
));
10279 if (putpkt (rs
->buf
) < 0)
10280 error (_("Communication problem with target."));
10282 /* get/display the response */
10287 /* XXX - see also remote_get_noisy_reply(). */
10288 QUIT
; /* Allow user to bail out with ^C. */
10290 if (getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) == -1)
10292 /* Timeout. Continue to (try to) read responses.
10293 This is better than stopping with an error, assuming the stub
10294 is still executing the (long) monitor command.
10295 If needed, the user can interrupt gdb using C-c, obtaining
10296 an effect similar to stop on timeout. */
10300 if (buf
[0] == '\0')
10301 error (_("Target does not support this command."));
10302 if (buf
[0] == 'O' && buf
[1] != 'K')
10304 remote_console_output (buf
+ 1); /* 'O' message from stub. */
10307 if (strcmp (buf
, "OK") == 0)
10309 if (strlen (buf
) == 3 && buf
[0] == 'E'
10310 && isdigit (buf
[1]) && isdigit (buf
[2]))
10312 error (_("Protocol error with Rcmd"));
10314 for (p
= buf
; p
[0] != '\0' && p
[1] != '\0'; p
+= 2)
10316 char c
= (fromhex (p
[0]) << 4) + fromhex (p
[1]);
10318 fputc_unfiltered (c
, outbuf
);
10324 static VEC(mem_region_s
) *
10325 remote_memory_map (struct target_ops
*ops
)
10327 VEC(mem_region_s
) *result
= NULL
;
10328 char *text
= target_read_stralloc (¤t_target
,
10329 TARGET_OBJECT_MEMORY_MAP
, NULL
);
10333 struct cleanup
*back_to
= make_cleanup (xfree
, text
);
10335 result
= parse_memory_map (text
);
10336 do_cleanups (back_to
);
10343 packet_command (char *args
, int from_tty
)
10345 struct remote_state
*rs
= get_remote_state ();
10347 if (!rs
->remote_desc
)
10348 error (_("command can only be used with remote target"));
10351 error (_("remote-packet command requires packet text as argument"));
10353 puts_filtered ("sending: ");
10354 print_packet (args
);
10355 puts_filtered ("\n");
10358 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
10359 puts_filtered ("received: ");
10360 print_packet (rs
->buf
);
10361 puts_filtered ("\n");
10365 /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */
10367 static void display_thread_info (struct gdb_ext_thread_info
*info
);
10369 static void threadset_test_cmd (char *cmd
, int tty
);
10371 static void threadalive_test (char *cmd
, int tty
);
10373 static void threadlist_test_cmd (char *cmd
, int tty
);
10375 int get_and_display_threadinfo (threadref
*ref
);
10377 static void threadinfo_test_cmd (char *cmd
, int tty
);
10379 static int thread_display_step (threadref
*ref
, void *context
);
10381 static void threadlist_update_test_cmd (char *cmd
, int tty
);
10383 static void init_remote_threadtests (void);
10385 #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */
10388 threadset_test_cmd (char *cmd
, int tty
)
10390 int sample_thread
= SAMPLE_THREAD
;
10392 printf_filtered (_("Remote threadset test\n"));
10393 set_general_thread (sample_thread
);
10398 threadalive_test (char *cmd
, int tty
)
10400 int sample_thread
= SAMPLE_THREAD
;
10401 int pid
= ptid_get_pid (inferior_ptid
);
10402 ptid_t ptid
= ptid_build (pid
, sample_thread
, 0);
10404 if (remote_thread_alive (ptid
))
10405 printf_filtered ("PASS: Thread alive test\n");
10407 printf_filtered ("FAIL: Thread alive test\n");
10410 void output_threadid (char *title
, threadref
*ref
);
10413 output_threadid (char *title
, threadref
*ref
)
10417 pack_threadid (&hexid
[0], ref
); /* Convert threead id into hex. */
10419 printf_filtered ("%s %s\n", title
, (&hexid
[0]));
10423 threadlist_test_cmd (char *cmd
, int tty
)
10426 threadref nextthread
;
10427 int done
, result_count
;
10428 threadref threadlist
[3];
10430 printf_filtered ("Remote Threadlist test\n");
10431 if (!remote_get_threadlist (startflag
, &nextthread
, 3, &done
,
10432 &result_count
, &threadlist
[0]))
10433 printf_filtered ("FAIL: threadlist test\n");
10436 threadref
*scan
= threadlist
;
10437 threadref
*limit
= scan
+ result_count
;
10439 while (scan
< limit
)
10440 output_threadid (" thread ", scan
++);
10445 display_thread_info (struct gdb_ext_thread_info
*info
)
10447 output_threadid ("Threadid: ", &info
->threadid
);
10448 printf_filtered ("Name: %s\n ", info
->shortname
);
10449 printf_filtered ("State: %s\n", info
->display
);
10450 printf_filtered ("other: %s\n\n", info
->more_display
);
10454 get_and_display_threadinfo (threadref
*ref
)
10458 struct gdb_ext_thread_info threadinfo
;
10460 set
= TAG_THREADID
| TAG_EXISTS
| TAG_THREADNAME
10461 | TAG_MOREDISPLAY
| TAG_DISPLAY
;
10462 if (0 != (result
= remote_get_threadinfo (ref
, set
, &threadinfo
)))
10463 display_thread_info (&threadinfo
);
10468 threadinfo_test_cmd (char *cmd
, int tty
)
10470 int athread
= SAMPLE_THREAD
;
10474 int_to_threadref (&thread
, athread
);
10475 printf_filtered ("Remote Threadinfo test\n");
10476 if (!get_and_display_threadinfo (&thread
))
10477 printf_filtered ("FAIL cannot get thread info\n");
10481 thread_display_step (threadref
*ref
, void *context
)
10483 /* output_threadid(" threadstep ",ref); *//* simple test */
10484 return get_and_display_threadinfo (ref
);
10488 threadlist_update_test_cmd (char *cmd
, int tty
)
10490 printf_filtered ("Remote Threadlist update test\n");
10491 remote_threadlist_iterator (thread_display_step
, 0, CRAZY_MAX_THREADS
);
10495 init_remote_threadtests (void)
10497 add_com ("tlist", class_obscure
, threadlist_test_cmd
,
10498 _("Fetch and print the remote list of "
10499 "thread identifiers, one pkt only"));
10500 add_com ("tinfo", class_obscure
, threadinfo_test_cmd
,
10501 _("Fetch and display info about one thread"));
10502 add_com ("tset", class_obscure
, threadset_test_cmd
,
10503 _("Test setting to a different thread"));
10504 add_com ("tupd", class_obscure
, threadlist_update_test_cmd
,
10505 _("Iterate through updating all remote thread info"));
10506 add_com ("talive", class_obscure
, threadalive_test
,
10507 _(" Remote thread alive test "));
10512 /* Convert a thread ID to a string. Returns the string in a static
10516 remote_pid_to_str (struct target_ops
*ops
, ptid_t ptid
)
10518 static char buf
[64];
10519 struct remote_state
*rs
= get_remote_state ();
10521 if (ptid_equal (ptid
, null_ptid
))
10522 return normal_pid_to_str (ptid
);
10523 else if (ptid_is_pid (ptid
))
10525 /* Printing an inferior target id. */
10527 /* When multi-process extensions are off, there's no way in the
10528 remote protocol to know the remote process id, if there's any
10529 at all. There's one exception --- when we're connected with
10530 target extended-remote, and we manually attached to a process
10531 with "attach PID". We don't record anywhere a flag that
10532 allows us to distinguish that case from the case of
10533 connecting with extended-remote and the stub already being
10534 attached to a process, and reporting yes to qAttached, hence
10535 no smart special casing here. */
10536 if (!remote_multi_process_p (rs
))
10538 xsnprintf (buf
, sizeof buf
, "Remote target");
10542 return normal_pid_to_str (ptid
);
10546 if (ptid_equal (magic_null_ptid
, ptid
))
10547 xsnprintf (buf
, sizeof buf
, "Thread <main>");
10548 else if (remote_multi_process_p (rs
))
10549 if (ptid_get_lwp (ptid
) == 0)
10550 return normal_pid_to_str (ptid
);
10552 xsnprintf (buf
, sizeof buf
, "Thread %d.%ld",
10553 ptid_get_pid (ptid
), ptid_get_lwp (ptid
));
10555 xsnprintf (buf
, sizeof buf
, "Thread %ld",
10556 ptid_get_lwp (ptid
));
10561 /* Get the address of the thread local variable in OBJFILE which is
10562 stored at OFFSET within the thread local storage for thread PTID. */
10565 remote_get_thread_local_address (struct target_ops
*ops
,
10566 ptid_t ptid
, CORE_ADDR lm
, CORE_ADDR offset
)
10568 if (packet_support (PACKET_qGetTLSAddr
) != PACKET_DISABLE
)
10570 struct remote_state
*rs
= get_remote_state ();
10572 char *endp
= rs
->buf
+ get_remote_packet_size ();
10573 enum packet_result result
;
10575 strcpy (p
, "qGetTLSAddr:");
10577 p
= write_ptid (p
, endp
, ptid
);
10579 p
+= hexnumstr (p
, offset
);
10581 p
+= hexnumstr (p
, lm
);
10585 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
10586 result
= packet_ok (rs
->buf
,
10587 &remote_protocol_packets
[PACKET_qGetTLSAddr
]);
10588 if (result
== PACKET_OK
)
10592 unpack_varlen_hex (rs
->buf
, &result
);
10595 else if (result
== PACKET_UNKNOWN
)
10596 throw_error (TLS_GENERIC_ERROR
,
10597 _("Remote target doesn't support qGetTLSAddr packet"));
10599 throw_error (TLS_GENERIC_ERROR
,
10600 _("Remote target failed to process qGetTLSAddr request"));
10603 throw_error (TLS_GENERIC_ERROR
,
10604 _("TLS not supported or disabled on this target"));
10609 /* Provide thread local base, i.e. Thread Information Block address.
10610 Returns 1 if ptid is found and thread_local_base is non zero. */
10613 remote_get_tib_address (struct target_ops
*self
, ptid_t ptid
, CORE_ADDR
*addr
)
10615 if (packet_support (PACKET_qGetTIBAddr
) != PACKET_DISABLE
)
10617 struct remote_state
*rs
= get_remote_state ();
10619 char *endp
= rs
->buf
+ get_remote_packet_size ();
10620 enum packet_result result
;
10622 strcpy (p
, "qGetTIBAddr:");
10624 p
= write_ptid (p
, endp
, ptid
);
10628 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
10629 result
= packet_ok (rs
->buf
,
10630 &remote_protocol_packets
[PACKET_qGetTIBAddr
]);
10631 if (result
== PACKET_OK
)
10635 unpack_varlen_hex (rs
->buf
, &result
);
10637 *addr
= (CORE_ADDR
) result
;
10640 else if (result
== PACKET_UNKNOWN
)
10641 error (_("Remote target doesn't support qGetTIBAddr packet"));
10643 error (_("Remote target failed to process qGetTIBAddr request"));
10646 error (_("qGetTIBAddr not supported or disabled on this target"));
10651 /* Support for inferring a target description based on the current
10652 architecture and the size of a 'g' packet. While the 'g' packet
10653 can have any size (since optional registers can be left off the
10654 end), some sizes are easily recognizable given knowledge of the
10655 approximate architecture. */
10657 struct remote_g_packet_guess
10660 const struct target_desc
*tdesc
;
10662 typedef struct remote_g_packet_guess remote_g_packet_guess_s
;
10663 DEF_VEC_O(remote_g_packet_guess_s
);
10665 struct remote_g_packet_data
10667 VEC(remote_g_packet_guess_s
) *guesses
;
10670 static struct gdbarch_data
*remote_g_packet_data_handle
;
10673 remote_g_packet_data_init (struct obstack
*obstack
)
10675 return OBSTACK_ZALLOC (obstack
, struct remote_g_packet_data
);
10679 register_remote_g_packet_guess (struct gdbarch
*gdbarch
, int bytes
,
10680 const struct target_desc
*tdesc
)
10682 struct remote_g_packet_data
*data
10683 = ((struct remote_g_packet_data
*)
10684 gdbarch_data (gdbarch
, remote_g_packet_data_handle
));
10685 struct remote_g_packet_guess new_guess
, *guess
;
10688 gdb_assert (tdesc
!= NULL
);
10691 VEC_iterate (remote_g_packet_guess_s
, data
->guesses
, ix
, guess
);
10693 if (guess
->bytes
== bytes
)
10694 internal_error (__FILE__
, __LINE__
,
10695 _("Duplicate g packet description added for size %d"),
10698 new_guess
.bytes
= bytes
;
10699 new_guess
.tdesc
= tdesc
;
10700 VEC_safe_push (remote_g_packet_guess_s
, data
->guesses
, &new_guess
);
10703 /* Return 1 if remote_read_description would do anything on this target
10704 and architecture, 0 otherwise. */
10707 remote_read_description_p (struct target_ops
*target
)
10709 struct remote_g_packet_data
*data
10710 = ((struct remote_g_packet_data
*)
10711 gdbarch_data (target_gdbarch (), remote_g_packet_data_handle
));
10713 if (!VEC_empty (remote_g_packet_guess_s
, data
->guesses
))
10719 static const struct target_desc
*
10720 remote_read_description (struct target_ops
*target
)
10722 struct remote_g_packet_data
*data
10723 = ((struct remote_g_packet_data
*)
10724 gdbarch_data (target_gdbarch (), remote_g_packet_data_handle
));
10726 /* Do not try this during initial connection, when we do not know
10727 whether there is a running but stopped thread. */
10728 if (!target_has_execution
|| ptid_equal (inferior_ptid
, null_ptid
))
10729 return target
->beneath
->to_read_description (target
->beneath
);
10731 if (!VEC_empty (remote_g_packet_guess_s
, data
->guesses
))
10733 struct remote_g_packet_guess
*guess
;
10735 int bytes
= send_g_packet ();
10738 VEC_iterate (remote_g_packet_guess_s
, data
->guesses
, ix
, guess
);
10740 if (guess
->bytes
== bytes
)
10741 return guess
->tdesc
;
10743 /* We discard the g packet. A minor optimization would be to
10744 hold on to it, and fill the register cache once we have selected
10745 an architecture, but it's too tricky to do safely. */
10748 return target
->beneath
->to_read_description (target
->beneath
);
10751 /* Remote file transfer support. This is host-initiated I/O, not
10752 target-initiated; for target-initiated, see remote-fileio.c. */
10754 /* If *LEFT is at least the length of STRING, copy STRING to
10755 *BUFFER, update *BUFFER to point to the new end of the buffer, and
10756 decrease *LEFT. Otherwise raise an error. */
10759 remote_buffer_add_string (char **buffer
, int *left
, char *string
)
10761 int len
= strlen (string
);
10764 error (_("Packet too long for target."));
10766 memcpy (*buffer
, string
, len
);
10770 /* NUL-terminate the buffer as a convenience, if there is
10776 /* If *LEFT is large enough, hex encode LEN bytes from BYTES into
10777 *BUFFER, update *BUFFER to point to the new end of the buffer, and
10778 decrease *LEFT. Otherwise raise an error. */
10781 remote_buffer_add_bytes (char **buffer
, int *left
, const gdb_byte
*bytes
,
10784 if (2 * len
> *left
)
10785 error (_("Packet too long for target."));
10787 bin2hex (bytes
, *buffer
, len
);
10788 *buffer
+= 2 * len
;
10791 /* NUL-terminate the buffer as a convenience, if there is
10797 /* If *LEFT is large enough, convert VALUE to hex and add it to
10798 *BUFFER, update *BUFFER to point to the new end of the buffer, and
10799 decrease *LEFT. Otherwise raise an error. */
10802 remote_buffer_add_int (char **buffer
, int *left
, ULONGEST value
)
10804 int len
= hexnumlen (value
);
10807 error (_("Packet too long for target."));
10809 hexnumstr (*buffer
, value
);
10813 /* NUL-terminate the buffer as a convenience, if there is
10819 /* Parse an I/O result packet from BUFFER. Set RETCODE to the return
10820 value, *REMOTE_ERRNO to the remote error number or zero if none
10821 was included, and *ATTACHMENT to point to the start of the annex
10822 if any. The length of the packet isn't needed here; there may
10823 be NUL bytes in BUFFER, but they will be after *ATTACHMENT.
10825 Return 0 if the packet could be parsed, -1 if it could not. If
10826 -1 is returned, the other variables may not be initialized. */
10829 remote_hostio_parse_result (char *buffer
, int *retcode
,
10830 int *remote_errno
, char **attachment
)
10835 *attachment
= NULL
;
10837 if (buffer
[0] != 'F')
10841 *retcode
= strtol (&buffer
[1], &p
, 16);
10842 if (errno
!= 0 || p
== &buffer
[1])
10845 /* Check for ",errno". */
10849 *remote_errno
= strtol (p
+ 1, &p2
, 16);
10850 if (errno
!= 0 || p
+ 1 == p2
)
10855 /* Check for ";attachment". If there is no attachment, the
10856 packet should end here. */
10859 *attachment
= p
+ 1;
10862 else if (*p
== '\0')
10868 /* Send a prepared I/O packet to the target and read its response.
10869 The prepared packet is in the global RS->BUF before this function
10870 is called, and the answer is there when we return.
10872 COMMAND_BYTES is the length of the request to send, which may include
10873 binary data. WHICH_PACKET is the packet configuration to check
10874 before attempting a packet. If an error occurs, *REMOTE_ERRNO
10875 is set to the error number and -1 is returned. Otherwise the value
10876 returned by the function is returned.
10878 ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an
10879 attachment is expected; an error will be reported if there's a
10880 mismatch. If one is found, *ATTACHMENT will be set to point into
10881 the packet buffer and *ATTACHMENT_LEN will be set to the
10882 attachment's length. */
10885 remote_hostio_send_command (int command_bytes
, int which_packet
,
10886 int *remote_errno
, char **attachment
,
10887 int *attachment_len
)
10889 struct remote_state
*rs
= get_remote_state ();
10890 int ret
, bytes_read
;
10891 char *attachment_tmp
;
10893 if (!rs
->remote_desc
10894 || packet_support (which_packet
) == PACKET_DISABLE
)
10896 *remote_errno
= FILEIO_ENOSYS
;
10900 putpkt_binary (rs
->buf
, command_bytes
);
10901 bytes_read
= getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0);
10903 /* If it timed out, something is wrong. Don't try to parse the
10905 if (bytes_read
< 0)
10907 *remote_errno
= FILEIO_EINVAL
;
10911 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[which_packet
]))
10914 *remote_errno
= FILEIO_EINVAL
;
10916 case PACKET_UNKNOWN
:
10917 *remote_errno
= FILEIO_ENOSYS
;
10923 if (remote_hostio_parse_result (rs
->buf
, &ret
, remote_errno
,
10926 *remote_errno
= FILEIO_EINVAL
;
10930 /* Make sure we saw an attachment if and only if we expected one. */
10931 if ((attachment_tmp
== NULL
&& attachment
!= NULL
)
10932 || (attachment_tmp
!= NULL
&& attachment
== NULL
))
10934 *remote_errno
= FILEIO_EINVAL
;
10938 /* If an attachment was found, it must point into the packet buffer;
10939 work out how many bytes there were. */
10940 if (attachment_tmp
!= NULL
)
10942 *attachment
= attachment_tmp
;
10943 *attachment_len
= bytes_read
- (*attachment
- rs
->buf
);
10949 /* Invalidate the readahead cache. */
10952 readahead_cache_invalidate (void)
10954 struct remote_state
*rs
= get_remote_state ();
10956 rs
->readahead_cache
.fd
= -1;
10959 /* Invalidate the readahead cache if it is holding data for FD. */
10962 readahead_cache_invalidate_fd (int fd
)
10964 struct remote_state
*rs
= get_remote_state ();
10966 if (rs
->readahead_cache
.fd
== fd
)
10967 rs
->readahead_cache
.fd
= -1;
10970 /* Set the filesystem remote_hostio functions that take FILENAME
10971 arguments will use. Return 0 on success, or -1 if an error
10972 occurs (and set *REMOTE_ERRNO). */
10975 remote_hostio_set_filesystem (struct inferior
*inf
, int *remote_errno
)
10977 struct remote_state
*rs
= get_remote_state ();
10978 int required_pid
= (inf
== NULL
|| inf
->fake_pid_p
) ? 0 : inf
->pid
;
10980 int left
= get_remote_packet_size () - 1;
10984 if (packet_support (PACKET_vFile_setfs
) == PACKET_DISABLE
)
10987 if (rs
->fs_pid
!= -1 && required_pid
== rs
->fs_pid
)
10990 remote_buffer_add_string (&p
, &left
, "vFile:setfs:");
10992 xsnprintf (arg
, sizeof (arg
), "%x", required_pid
);
10993 remote_buffer_add_string (&p
, &left
, arg
);
10995 ret
= remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_setfs
,
10996 remote_errno
, NULL
, NULL
);
10998 if (packet_support (PACKET_vFile_setfs
) == PACKET_DISABLE
)
11002 rs
->fs_pid
= required_pid
;
11007 /* Implementation of to_fileio_open. */
11010 remote_hostio_open (struct target_ops
*self
,
11011 struct inferior
*inf
, const char *filename
,
11012 int flags
, int mode
, int warn_if_slow
,
11015 struct remote_state
*rs
= get_remote_state ();
11017 int left
= get_remote_packet_size () - 1;
11021 static int warning_issued
= 0;
11023 printf_unfiltered (_("Reading %s from remote target...\n"),
11026 if (!warning_issued
)
11028 warning (_("File transfers from remote targets can be slow."
11029 " Use \"set sysroot\" to access files locally"
11031 warning_issued
= 1;
11035 if (remote_hostio_set_filesystem (inf
, remote_errno
) != 0)
11038 remote_buffer_add_string (&p
, &left
, "vFile:open:");
11040 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
11041 strlen (filename
));
11042 remote_buffer_add_string (&p
, &left
, ",");
11044 remote_buffer_add_int (&p
, &left
, flags
);
11045 remote_buffer_add_string (&p
, &left
, ",");
11047 remote_buffer_add_int (&p
, &left
, mode
);
11049 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_open
,
11050 remote_errno
, NULL
, NULL
);
11053 /* Implementation of to_fileio_pwrite. */
11056 remote_hostio_pwrite (struct target_ops
*self
,
11057 int fd
, const gdb_byte
*write_buf
, int len
,
11058 ULONGEST offset
, int *remote_errno
)
11060 struct remote_state
*rs
= get_remote_state ();
11062 int left
= get_remote_packet_size ();
11065 readahead_cache_invalidate_fd (fd
);
11067 remote_buffer_add_string (&p
, &left
, "vFile:pwrite:");
11069 remote_buffer_add_int (&p
, &left
, fd
);
11070 remote_buffer_add_string (&p
, &left
, ",");
11072 remote_buffer_add_int (&p
, &left
, offset
);
11073 remote_buffer_add_string (&p
, &left
, ",");
11075 p
+= remote_escape_output (write_buf
, len
, 1, (gdb_byte
*) p
, &out_len
,
11076 get_remote_packet_size () - (p
- rs
->buf
));
11078 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_pwrite
,
11079 remote_errno
, NULL
, NULL
);
11082 /* Helper for the implementation of to_fileio_pread. Read the file
11083 from the remote side with vFile:pread. */
11086 remote_hostio_pread_vFile (struct target_ops
*self
,
11087 int fd
, gdb_byte
*read_buf
, int len
,
11088 ULONGEST offset
, int *remote_errno
)
11090 struct remote_state
*rs
= get_remote_state ();
11093 int left
= get_remote_packet_size ();
11094 int ret
, attachment_len
;
11097 remote_buffer_add_string (&p
, &left
, "vFile:pread:");
11099 remote_buffer_add_int (&p
, &left
, fd
);
11100 remote_buffer_add_string (&p
, &left
, ",");
11102 remote_buffer_add_int (&p
, &left
, len
);
11103 remote_buffer_add_string (&p
, &left
, ",");
11105 remote_buffer_add_int (&p
, &left
, offset
);
11107 ret
= remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_pread
,
11108 remote_errno
, &attachment
,
11114 read_len
= remote_unescape_input ((gdb_byte
*) attachment
, attachment_len
,
11116 if (read_len
!= ret
)
11117 error (_("Read returned %d, but %d bytes."), ret
, (int) read_len
);
11122 /* Serve pread from the readahead cache. Returns number of bytes
11123 read, or 0 if the request can't be served from the cache. */
11126 remote_hostio_pread_from_cache (struct remote_state
*rs
,
11127 int fd
, gdb_byte
*read_buf
, size_t len
,
11130 struct readahead_cache
*cache
= &rs
->readahead_cache
;
11132 if (cache
->fd
== fd
11133 && cache
->offset
<= offset
11134 && offset
< cache
->offset
+ cache
->bufsize
)
11136 ULONGEST max
= cache
->offset
+ cache
->bufsize
;
11138 if (offset
+ len
> max
)
11139 len
= max
- offset
;
11141 memcpy (read_buf
, cache
->buf
+ offset
- cache
->offset
, len
);
11148 /* Implementation of to_fileio_pread. */
11151 remote_hostio_pread (struct target_ops
*self
,
11152 int fd
, gdb_byte
*read_buf
, int len
,
11153 ULONGEST offset
, int *remote_errno
)
11156 struct remote_state
*rs
= get_remote_state ();
11157 struct readahead_cache
*cache
= &rs
->readahead_cache
;
11159 ret
= remote_hostio_pread_from_cache (rs
, fd
, read_buf
, len
, offset
);
11162 cache
->hit_count
++;
11165 fprintf_unfiltered (gdb_stdlog
, "readahead cache hit %s\n",
11166 pulongest (cache
->hit_count
));
11170 cache
->miss_count
++;
11172 fprintf_unfiltered (gdb_stdlog
, "readahead cache miss %s\n",
11173 pulongest (cache
->miss_count
));
11176 cache
->offset
= offset
;
11177 cache
->bufsize
= get_remote_packet_size ();
11178 cache
->buf
= (gdb_byte
*) xrealloc (cache
->buf
, cache
->bufsize
);
11180 ret
= remote_hostio_pread_vFile (self
, cache
->fd
, cache
->buf
, cache
->bufsize
,
11181 cache
->offset
, remote_errno
);
11184 readahead_cache_invalidate_fd (fd
);
11188 cache
->bufsize
= ret
;
11189 return remote_hostio_pread_from_cache (rs
, fd
, read_buf
, len
, offset
);
11192 /* Implementation of to_fileio_close. */
11195 remote_hostio_close (struct target_ops
*self
, int fd
, int *remote_errno
)
11197 struct remote_state
*rs
= get_remote_state ();
11199 int left
= get_remote_packet_size () - 1;
11201 readahead_cache_invalidate_fd (fd
);
11203 remote_buffer_add_string (&p
, &left
, "vFile:close:");
11205 remote_buffer_add_int (&p
, &left
, fd
);
11207 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_close
,
11208 remote_errno
, NULL
, NULL
);
11211 /* Implementation of to_fileio_unlink. */
11214 remote_hostio_unlink (struct target_ops
*self
,
11215 struct inferior
*inf
, const char *filename
,
11218 struct remote_state
*rs
= get_remote_state ();
11220 int left
= get_remote_packet_size () - 1;
11222 if (remote_hostio_set_filesystem (inf
, remote_errno
) != 0)
11225 remote_buffer_add_string (&p
, &left
, "vFile:unlink:");
11227 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
11228 strlen (filename
));
11230 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_unlink
,
11231 remote_errno
, NULL
, NULL
);
11234 /* Implementation of to_fileio_readlink. */
11237 remote_hostio_readlink (struct target_ops
*self
,
11238 struct inferior
*inf
, const char *filename
,
11241 struct remote_state
*rs
= get_remote_state ();
11244 int left
= get_remote_packet_size ();
11245 int len
, attachment_len
;
11249 if (remote_hostio_set_filesystem (inf
, remote_errno
) != 0)
11252 remote_buffer_add_string (&p
, &left
, "vFile:readlink:");
11254 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
11255 strlen (filename
));
11257 len
= remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_readlink
,
11258 remote_errno
, &attachment
,
11264 ret
= (char *) xmalloc (len
+ 1);
11266 read_len
= remote_unescape_input ((gdb_byte
*) attachment
, attachment_len
,
11267 (gdb_byte
*) ret
, len
);
11268 if (read_len
!= len
)
11269 error (_("Readlink returned %d, but %d bytes."), len
, read_len
);
11275 /* Implementation of to_fileio_fstat. */
11278 remote_hostio_fstat (struct target_ops
*self
,
11279 int fd
, struct stat
*st
,
11282 struct remote_state
*rs
= get_remote_state ();
11284 int left
= get_remote_packet_size ();
11285 int attachment_len
, ret
;
11287 struct fio_stat fst
;
11290 remote_buffer_add_string (&p
, &left
, "vFile:fstat:");
11292 remote_buffer_add_int (&p
, &left
, fd
);
11294 ret
= remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_fstat
,
11295 remote_errno
, &attachment
,
11299 if (*remote_errno
!= FILEIO_ENOSYS
)
11302 /* Strictly we should return -1, ENOSYS here, but when
11303 "set sysroot remote:" was implemented in August 2008
11304 BFD's need for a stat function was sidestepped with
11305 this hack. This was not remedied until March 2015
11306 so we retain the previous behavior to avoid breaking
11309 Note that the memset is a March 2015 addition; older
11310 GDBs set st_size *and nothing else* so the structure
11311 would have garbage in all other fields. This might
11312 break something but retaining the previous behavior
11313 here would be just too wrong. */
11315 memset (st
, 0, sizeof (struct stat
));
11316 st
->st_size
= INT_MAX
;
11320 read_len
= remote_unescape_input ((gdb_byte
*) attachment
, attachment_len
,
11321 (gdb_byte
*) &fst
, sizeof (fst
));
11323 if (read_len
!= ret
)
11324 error (_("vFile:fstat returned %d, but %d bytes."), ret
, read_len
);
11326 if (read_len
!= sizeof (fst
))
11327 error (_("vFile:fstat returned %d bytes, but expecting %d."),
11328 read_len
, (int) sizeof (fst
));
11330 remote_fileio_to_host_stat (&fst
, st
);
11335 /* Implementation of to_filesystem_is_local. */
11338 remote_filesystem_is_local (struct target_ops
*self
)
11340 /* Valgrind GDB presents itself as a remote target but works
11341 on the local filesystem: it does not implement remote get
11342 and users are not expected to set a sysroot. To handle
11343 this case we treat the remote filesystem as local if the
11344 sysroot is exactly TARGET_SYSROOT_PREFIX and if the stub
11345 does not support vFile:open. */
11346 if (strcmp (gdb_sysroot
, TARGET_SYSROOT_PREFIX
) == 0)
11348 enum packet_support ps
= packet_support (PACKET_vFile_open
);
11350 if (ps
== PACKET_SUPPORT_UNKNOWN
)
11352 int fd
, remote_errno
;
11354 /* Try opening a file to probe support. The supplied
11355 filename is irrelevant, we only care about whether
11356 the stub recognizes the packet or not. */
11357 fd
= remote_hostio_open (self
, NULL
, "just probing",
11358 FILEIO_O_RDONLY
, 0700, 0,
11362 remote_hostio_close (self
, fd
, &remote_errno
);
11364 ps
= packet_support (PACKET_vFile_open
);
11367 if (ps
== PACKET_DISABLE
)
11369 static int warning_issued
= 0;
11371 if (!warning_issued
)
11373 warning (_("remote target does not support file"
11374 " transfer, attempting to access files"
11375 " from local filesystem."));
11376 warning_issued
= 1;
11387 remote_fileio_errno_to_host (int errnum
)
11393 case FILEIO_ENOENT
:
11401 case FILEIO_EACCES
:
11403 case FILEIO_EFAULT
:
11407 case FILEIO_EEXIST
:
11409 case FILEIO_ENODEV
:
11411 case FILEIO_ENOTDIR
:
11413 case FILEIO_EISDIR
:
11415 case FILEIO_EINVAL
:
11417 case FILEIO_ENFILE
:
11419 case FILEIO_EMFILE
:
11423 case FILEIO_ENOSPC
:
11425 case FILEIO_ESPIPE
:
11429 case FILEIO_ENOSYS
:
11431 case FILEIO_ENAMETOOLONG
:
11432 return ENAMETOOLONG
;
11438 remote_hostio_error (int errnum
)
11440 int host_error
= remote_fileio_errno_to_host (errnum
);
11442 if (host_error
== -1)
11443 error (_("Unknown remote I/O error %d"), errnum
);
11445 error (_("Remote I/O error: %s"), safe_strerror (host_error
));
11449 remote_hostio_close_cleanup (void *opaque
)
11451 int fd
= *(int *) opaque
;
11454 remote_hostio_close (find_target_at (process_stratum
), fd
, &remote_errno
);
11458 remote_file_put (const char *local_file
, const char *remote_file
, int from_tty
)
11460 struct cleanup
*back_to
, *close_cleanup
;
11461 int retcode
, fd
, remote_errno
, bytes
, io_size
;
11464 int bytes_in_buffer
;
11467 struct remote_state
*rs
= get_remote_state ();
11469 if (!rs
->remote_desc
)
11470 error (_("command can only be used with remote target"));
11472 file
= gdb_fopen_cloexec (local_file
, "rb");
11474 perror_with_name (local_file
);
11475 back_to
= make_cleanup_fclose (file
);
11477 fd
= remote_hostio_open (find_target_at (process_stratum
), NULL
,
11478 remote_file
, (FILEIO_O_WRONLY
| FILEIO_O_CREAT
11480 0700, 0, &remote_errno
);
11482 remote_hostio_error (remote_errno
);
11484 /* Send up to this many bytes at once. They won't all fit in the
11485 remote packet limit, so we'll transfer slightly fewer. */
11486 io_size
= get_remote_packet_size ();
11487 buffer
= (gdb_byte
*) xmalloc (io_size
);
11488 make_cleanup (xfree
, buffer
);
11490 close_cleanup
= make_cleanup (remote_hostio_close_cleanup
, &fd
);
11492 bytes_in_buffer
= 0;
11495 while (bytes_in_buffer
|| !saw_eof
)
11499 bytes
= fread (buffer
+ bytes_in_buffer
, 1,
11500 io_size
- bytes_in_buffer
,
11505 error (_("Error reading %s."), local_file
);
11508 /* EOF. Unless there is something still in the
11509 buffer from the last iteration, we are done. */
11511 if (bytes_in_buffer
== 0)
11519 bytes
+= bytes_in_buffer
;
11520 bytes_in_buffer
= 0;
11522 retcode
= remote_hostio_pwrite (find_target_at (process_stratum
),
11524 offset
, &remote_errno
);
11527 remote_hostio_error (remote_errno
);
11528 else if (retcode
== 0)
11529 error (_("Remote write of %d bytes returned 0!"), bytes
);
11530 else if (retcode
< bytes
)
11532 /* Short write. Save the rest of the read data for the next
11534 bytes_in_buffer
= bytes
- retcode
;
11535 memmove (buffer
, buffer
+ retcode
, bytes_in_buffer
);
11541 discard_cleanups (close_cleanup
);
11542 if (remote_hostio_close (find_target_at (process_stratum
), fd
, &remote_errno
))
11543 remote_hostio_error (remote_errno
);
11546 printf_filtered (_("Successfully sent file \"%s\".\n"), local_file
);
11547 do_cleanups (back_to
);
11551 remote_file_get (const char *remote_file
, const char *local_file
, int from_tty
)
11553 struct cleanup
*back_to
, *close_cleanup
;
11554 int fd
, remote_errno
, bytes
, io_size
;
11558 struct remote_state
*rs
= get_remote_state ();
11560 if (!rs
->remote_desc
)
11561 error (_("command can only be used with remote target"));
11563 fd
= remote_hostio_open (find_target_at (process_stratum
), NULL
,
11564 remote_file
, FILEIO_O_RDONLY
, 0, 0,
11567 remote_hostio_error (remote_errno
);
11569 file
= gdb_fopen_cloexec (local_file
, "wb");
11571 perror_with_name (local_file
);
11572 back_to
= make_cleanup_fclose (file
);
11574 /* Send up to this many bytes at once. They won't all fit in the
11575 remote packet limit, so we'll transfer slightly fewer. */
11576 io_size
= get_remote_packet_size ();
11577 buffer
= (gdb_byte
*) xmalloc (io_size
);
11578 make_cleanup (xfree
, buffer
);
11580 close_cleanup
= make_cleanup (remote_hostio_close_cleanup
, &fd
);
11585 bytes
= remote_hostio_pread (find_target_at (process_stratum
),
11586 fd
, buffer
, io_size
, offset
, &remote_errno
);
11588 /* Success, but no bytes, means end-of-file. */
11591 remote_hostio_error (remote_errno
);
11595 bytes
= fwrite (buffer
, 1, bytes
, file
);
11597 perror_with_name (local_file
);
11600 discard_cleanups (close_cleanup
);
11601 if (remote_hostio_close (find_target_at (process_stratum
), fd
, &remote_errno
))
11602 remote_hostio_error (remote_errno
);
11605 printf_filtered (_("Successfully fetched file \"%s\".\n"), remote_file
);
11606 do_cleanups (back_to
);
11610 remote_file_delete (const char *remote_file
, int from_tty
)
11612 int retcode
, remote_errno
;
11613 struct remote_state
*rs
= get_remote_state ();
11615 if (!rs
->remote_desc
)
11616 error (_("command can only be used with remote target"));
11618 retcode
= remote_hostio_unlink (find_target_at (process_stratum
),
11619 NULL
, remote_file
, &remote_errno
);
11621 remote_hostio_error (remote_errno
);
11624 printf_filtered (_("Successfully deleted file \"%s\".\n"), remote_file
);
11628 remote_put_command (char *args
, int from_tty
)
11630 struct cleanup
*back_to
;
11634 error_no_arg (_("file to put"));
11636 argv
= gdb_buildargv (args
);
11637 back_to
= make_cleanup_freeargv (argv
);
11638 if (argv
[0] == NULL
|| argv
[1] == NULL
|| argv
[2] != NULL
)
11639 error (_("Invalid parameters to remote put"));
11641 remote_file_put (argv
[0], argv
[1], from_tty
);
11643 do_cleanups (back_to
);
11647 remote_get_command (char *args
, int from_tty
)
11649 struct cleanup
*back_to
;
11653 error_no_arg (_("file to get"));
11655 argv
= gdb_buildargv (args
);
11656 back_to
= make_cleanup_freeargv (argv
);
11657 if (argv
[0] == NULL
|| argv
[1] == NULL
|| argv
[2] != NULL
)
11658 error (_("Invalid parameters to remote get"));
11660 remote_file_get (argv
[0], argv
[1], from_tty
);
11662 do_cleanups (back_to
);
11666 remote_delete_command (char *args
, int from_tty
)
11668 struct cleanup
*back_to
;
11672 error_no_arg (_("file to delete"));
11674 argv
= gdb_buildargv (args
);
11675 back_to
= make_cleanup_freeargv (argv
);
11676 if (argv
[0] == NULL
|| argv
[1] != NULL
)
11677 error (_("Invalid parameters to remote delete"));
11679 remote_file_delete (argv
[0], from_tty
);
11681 do_cleanups (back_to
);
11685 remote_command (char *args
, int from_tty
)
11687 help_list (remote_cmdlist
, "remote ", all_commands
, gdb_stdout
);
11691 remote_can_execute_reverse (struct target_ops
*self
)
11693 if (packet_support (PACKET_bs
) == PACKET_ENABLE
11694 || packet_support (PACKET_bc
) == PACKET_ENABLE
)
11701 remote_supports_non_stop (struct target_ops
*self
)
11707 remote_supports_disable_randomization (struct target_ops
*self
)
11709 /* Only supported in extended mode. */
11714 remote_supports_multi_process (struct target_ops
*self
)
11716 struct remote_state
*rs
= get_remote_state ();
11718 return remote_multi_process_p (rs
);
11722 remote_supports_cond_tracepoints (void)
11724 return packet_support (PACKET_ConditionalTracepoints
) == PACKET_ENABLE
;
11728 remote_supports_cond_breakpoints (struct target_ops
*self
)
11730 return packet_support (PACKET_ConditionalBreakpoints
) == PACKET_ENABLE
;
11734 remote_supports_fast_tracepoints (void)
11736 return packet_support (PACKET_FastTracepoints
) == PACKET_ENABLE
;
11740 remote_supports_static_tracepoints (void)
11742 return packet_support (PACKET_StaticTracepoints
) == PACKET_ENABLE
;
11746 remote_supports_install_in_trace (void)
11748 return packet_support (PACKET_InstallInTrace
) == PACKET_ENABLE
;
11752 remote_supports_enable_disable_tracepoint (struct target_ops
*self
)
11754 return (packet_support (PACKET_EnableDisableTracepoints_feature
)
11759 remote_supports_string_tracing (struct target_ops
*self
)
11761 return packet_support (PACKET_tracenz_feature
) == PACKET_ENABLE
;
11765 remote_can_run_breakpoint_commands (struct target_ops
*self
)
11767 return packet_support (PACKET_BreakpointCommands
) == PACKET_ENABLE
;
11771 remote_trace_init (struct target_ops
*self
)
11774 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11775 if (strcmp (target_buf
, "OK") != 0)
11776 error (_("Target does not support this command."));
11779 static void free_actions_list (char **actions_list
);
11780 static void free_actions_list_cleanup_wrapper (void *);
11782 free_actions_list_cleanup_wrapper (void *al
)
11784 free_actions_list ((char **) al
);
11788 free_actions_list (char **actions_list
)
11792 if (actions_list
== 0)
11795 for (ndx
= 0; actions_list
[ndx
]; ndx
++)
11796 xfree (actions_list
[ndx
]);
11798 xfree (actions_list
);
11801 /* Recursive routine to walk through command list including loops, and
11802 download packets for each command. */
11805 remote_download_command_source (int num
, ULONGEST addr
,
11806 struct command_line
*cmds
)
11808 struct remote_state
*rs
= get_remote_state ();
11809 struct command_line
*cmd
;
11811 for (cmd
= cmds
; cmd
; cmd
= cmd
->next
)
11813 QUIT
; /* Allow user to bail out with ^C. */
11814 strcpy (rs
->buf
, "QTDPsrc:");
11815 encode_source_string (num
, addr
, "cmd", cmd
->line
,
11816 rs
->buf
+ strlen (rs
->buf
),
11817 rs
->buf_size
- strlen (rs
->buf
));
11819 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11820 if (strcmp (target_buf
, "OK"))
11821 warning (_("Target does not support source download."));
11823 if (cmd
->control_type
== while_control
11824 || cmd
->control_type
== while_stepping_control
)
11826 remote_download_command_source (num
, addr
, *cmd
->body_list
);
11828 QUIT
; /* Allow user to bail out with ^C. */
11829 strcpy (rs
->buf
, "QTDPsrc:");
11830 encode_source_string (num
, addr
, "cmd", "end",
11831 rs
->buf
+ strlen (rs
->buf
),
11832 rs
->buf_size
- strlen (rs
->buf
));
11834 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11835 if (strcmp (target_buf
, "OK"))
11836 warning (_("Target does not support source download."));
11842 remote_download_tracepoint (struct target_ops
*self
, struct bp_location
*loc
)
11844 #define BUF_SIZE 2048
11848 char buf
[BUF_SIZE
];
11849 char **tdp_actions
;
11850 char **stepping_actions
;
11852 struct cleanup
*old_chain
= NULL
;
11853 struct agent_expr
*aexpr
;
11854 struct cleanup
*aexpr_chain
= NULL
;
11856 struct breakpoint
*b
= loc
->owner
;
11857 struct tracepoint
*t
= (struct tracepoint
*) b
;
11859 encode_actions_rsp (loc
, &tdp_actions
, &stepping_actions
);
11860 old_chain
= make_cleanup (free_actions_list_cleanup_wrapper
,
11862 (void) make_cleanup (free_actions_list_cleanup_wrapper
,
11865 tpaddr
= loc
->address
;
11866 sprintf_vma (addrbuf
, tpaddr
);
11867 xsnprintf (buf
, BUF_SIZE
, "QTDP:%x:%s:%c:%lx:%x", b
->number
,
11868 addrbuf
, /* address */
11869 (b
->enable_state
== bp_enabled
? 'E' : 'D'),
11870 t
->step_count
, t
->pass_count
);
11871 /* Fast tracepoints are mostly handled by the target, but we can
11872 tell the target how big of an instruction block should be moved
11874 if (b
->type
== bp_fast_tracepoint
)
11876 /* Only test for support at download time; we may not know
11877 target capabilities at definition time. */
11878 if (remote_supports_fast_tracepoints ())
11880 if (gdbarch_fast_tracepoint_valid_at (loc
->gdbarch
, tpaddr
,
11882 xsnprintf (buf
+ strlen (buf
), BUF_SIZE
- strlen (buf
), ":F%x",
11883 gdb_insn_length (loc
->gdbarch
, tpaddr
));
11885 /* If it passed validation at definition but fails now,
11886 something is very wrong. */
11887 internal_error (__FILE__
, __LINE__
,
11888 _("Fast tracepoint not "
11889 "valid during download"));
11892 /* Fast tracepoints are functionally identical to regular
11893 tracepoints, so don't take lack of support as a reason to
11894 give up on the trace run. */
11895 warning (_("Target does not support fast tracepoints, "
11896 "downloading %d as regular tracepoint"), b
->number
);
11898 else if (b
->type
== bp_static_tracepoint
)
11900 /* Only test for support at download time; we may not know
11901 target capabilities at definition time. */
11902 if (remote_supports_static_tracepoints ())
11904 struct static_tracepoint_marker marker
;
11906 if (target_static_tracepoint_marker_at (tpaddr
, &marker
))
11907 strcat (buf
, ":S");
11909 error (_("Static tracepoint not valid during download"));
11912 /* Fast tracepoints are functionally identical to regular
11913 tracepoints, so don't take lack of support as a reason
11914 to give up on the trace run. */
11915 error (_("Target does not support static tracepoints"));
11917 /* If the tracepoint has a conditional, make it into an agent
11918 expression and append to the definition. */
11921 /* Only test support at download time, we may not know target
11922 capabilities at definition time. */
11923 if (remote_supports_cond_tracepoints ())
11925 aexpr
= gen_eval_for_expr (tpaddr
, loc
->cond
);
11926 aexpr_chain
= make_cleanup_free_agent_expr (aexpr
);
11927 xsnprintf (buf
+ strlen (buf
), BUF_SIZE
- strlen (buf
), ":X%x,",
11929 pkt
= buf
+ strlen (buf
);
11930 for (ndx
= 0; ndx
< aexpr
->len
; ++ndx
)
11931 pkt
= pack_hex_byte (pkt
, aexpr
->buf
[ndx
]);
11933 do_cleanups (aexpr_chain
);
11936 warning (_("Target does not support conditional tracepoints, "
11937 "ignoring tp %d cond"), b
->number
);
11940 if (b
->commands
|| *default_collect
)
11943 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11944 if (strcmp (target_buf
, "OK"))
11945 error (_("Target does not support tracepoints."));
11947 /* do_single_steps (t); */
11950 for (ndx
= 0; tdp_actions
[ndx
]; ndx
++)
11952 QUIT
; /* Allow user to bail out with ^C. */
11953 xsnprintf (buf
, BUF_SIZE
, "QTDP:-%x:%s:%s%c",
11954 b
->number
, addrbuf
, /* address */
11956 ((tdp_actions
[ndx
+ 1] || stepping_actions
)
11959 remote_get_noisy_reply (&target_buf
,
11961 if (strcmp (target_buf
, "OK"))
11962 error (_("Error on target while setting tracepoints."));
11965 if (stepping_actions
)
11967 for (ndx
= 0; stepping_actions
[ndx
]; ndx
++)
11969 QUIT
; /* Allow user to bail out with ^C. */
11970 xsnprintf (buf
, BUF_SIZE
, "QTDP:-%x:%s:%s%s%s",
11971 b
->number
, addrbuf
, /* address */
11972 ((ndx
== 0) ? "S" : ""),
11973 stepping_actions
[ndx
],
11974 (stepping_actions
[ndx
+ 1] ? "-" : ""));
11976 remote_get_noisy_reply (&target_buf
,
11978 if (strcmp (target_buf
, "OK"))
11979 error (_("Error on target while setting tracepoints."));
11983 if (packet_support (PACKET_TracepointSource
) == PACKET_ENABLE
)
11985 if (b
->location
!= NULL
)
11987 strcpy (buf
, "QTDPsrc:");
11988 encode_source_string (b
->number
, loc
->address
, "at",
11989 event_location_to_string (b
->location
),
11990 buf
+ strlen (buf
), 2048 - strlen (buf
));
11992 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11993 if (strcmp (target_buf
, "OK"))
11994 warning (_("Target does not support source download."));
11996 if (b
->cond_string
)
11998 strcpy (buf
, "QTDPsrc:");
11999 encode_source_string (b
->number
, loc
->address
,
12000 "cond", b
->cond_string
, buf
+ strlen (buf
),
12001 2048 - strlen (buf
));
12003 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
12004 if (strcmp (target_buf
, "OK"))
12005 warning (_("Target does not support source download."));
12007 remote_download_command_source (b
->number
, loc
->address
,
12008 breakpoint_commands (b
));
12011 do_cleanups (old_chain
);
12015 remote_can_download_tracepoint (struct target_ops
*self
)
12017 struct remote_state
*rs
= get_remote_state ();
12018 struct trace_status
*ts
;
12021 /* Don't try to install tracepoints until we've relocated our
12022 symbols, and fetched and merged the target's tracepoint list with
12024 if (rs
->starting_up
)
12027 ts
= current_trace_status ();
12028 status
= remote_get_trace_status (self
, ts
);
12030 if (status
== -1 || !ts
->running_known
|| !ts
->running
)
12033 /* If we are in a tracing experiment, but remote stub doesn't support
12034 installing tracepoint in trace, we have to return. */
12035 if (!remote_supports_install_in_trace ())
12043 remote_download_trace_state_variable (struct target_ops
*self
,
12044 struct trace_state_variable
*tsv
)
12046 struct remote_state
*rs
= get_remote_state ();
12049 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTDV:%x:%s:%x:",
12050 tsv
->number
, phex ((ULONGEST
) tsv
->initial_value
, 8),
12052 p
= rs
->buf
+ strlen (rs
->buf
);
12053 if ((p
- rs
->buf
) + strlen (tsv
->name
) * 2 >= get_remote_packet_size ())
12054 error (_("Trace state variable name too long for tsv definition packet"));
12055 p
+= 2 * bin2hex ((gdb_byte
*) (tsv
->name
), p
, strlen (tsv
->name
));
12058 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
12059 if (*target_buf
== '\0')
12060 error (_("Target does not support this command."));
12061 if (strcmp (target_buf
, "OK") != 0)
12062 error (_("Error on target while downloading trace state variable."));
12066 remote_enable_tracepoint (struct target_ops
*self
,
12067 struct bp_location
*location
)
12069 struct remote_state
*rs
= get_remote_state ();
12072 sprintf_vma (addr_buf
, location
->address
);
12073 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTEnable:%x:%s",
12074 location
->owner
->number
, addr_buf
);
12076 remote_get_noisy_reply (&rs
->buf
, &rs
->buf_size
);
12077 if (*rs
->buf
== '\0')
12078 error (_("Target does not support enabling tracepoints while a trace run is ongoing."));
12079 if (strcmp (rs
->buf
, "OK") != 0)
12080 error (_("Error on target while enabling tracepoint."));
12084 remote_disable_tracepoint (struct target_ops
*self
,
12085 struct bp_location
*location
)
12087 struct remote_state
*rs
= get_remote_state ();
12090 sprintf_vma (addr_buf
, location
->address
);
12091 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTDisable:%x:%s",
12092 location
->owner
->number
, addr_buf
);
12094 remote_get_noisy_reply (&rs
->buf
, &rs
->buf_size
);
12095 if (*rs
->buf
== '\0')
12096 error (_("Target does not support disabling tracepoints while a trace run is ongoing."));
12097 if (strcmp (rs
->buf
, "OK") != 0)
12098 error (_("Error on target while disabling tracepoint."));
12102 remote_trace_set_readonly_regions (struct target_ops
*self
)
12106 bfd_size_type size
;
12112 return; /* No information to give. */
12114 strcpy (target_buf
, "QTro");
12115 offset
= strlen (target_buf
);
12116 for (s
= exec_bfd
->sections
; s
; s
= s
->next
)
12118 char tmp1
[40], tmp2
[40];
12121 if ((s
->flags
& SEC_LOAD
) == 0 ||
12122 /* (s->flags & SEC_CODE) == 0 || */
12123 (s
->flags
& SEC_READONLY
) == 0)
12127 vma
= bfd_get_section_vma (abfd
, s
);
12128 size
= bfd_get_section_size (s
);
12129 sprintf_vma (tmp1
, vma
);
12130 sprintf_vma (tmp2
, vma
+ size
);
12131 sec_length
= 1 + strlen (tmp1
) + 1 + strlen (tmp2
);
12132 if (offset
+ sec_length
+ 1 > target_buf_size
)
12134 if (packet_support (PACKET_qXfer_traceframe_info
) != PACKET_ENABLE
)
12136 Too many sections for read-only sections definition packet."));
12139 xsnprintf (target_buf
+ offset
, target_buf_size
- offset
, ":%s,%s",
12141 offset
+= sec_length
;
12145 putpkt (target_buf
);
12146 getpkt (&target_buf
, &target_buf_size
, 0);
12151 remote_trace_start (struct target_ops
*self
)
12153 putpkt ("QTStart");
12154 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
12155 if (*target_buf
== '\0')
12156 error (_("Target does not support this command."));
12157 if (strcmp (target_buf
, "OK") != 0)
12158 error (_("Bogus reply from target: %s"), target_buf
);
12162 remote_get_trace_status (struct target_ops
*self
, struct trace_status
*ts
)
12164 /* Initialize it just to avoid a GCC false warning. */
12166 /* FIXME we need to get register block size some other way. */
12167 extern int trace_regblock_size
;
12168 enum packet_result result
;
12170 if (packet_support (PACKET_qTStatus
) == PACKET_DISABLE
)
12173 trace_regblock_size
= get_remote_arch_state ()->sizeof_g_packet
;
12175 putpkt ("qTStatus");
12179 p
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
12181 CATCH (ex
, RETURN_MASK_ERROR
)
12183 if (ex
.error
!= TARGET_CLOSE_ERROR
)
12185 exception_fprintf (gdb_stderr
, ex
, "qTStatus: ");
12188 throw_exception (ex
);
12192 result
= packet_ok (p
, &remote_protocol_packets
[PACKET_qTStatus
]);
12194 /* If the remote target doesn't do tracing, flag it. */
12195 if (result
== PACKET_UNKNOWN
)
12198 /* We're working with a live target. */
12199 ts
->filename
= NULL
;
12202 error (_("Bogus trace status reply from target: %s"), target_buf
);
12204 /* Function 'parse_trace_status' sets default value of each field of
12205 'ts' at first, so we don't have to do it here. */
12206 parse_trace_status (p
, ts
);
12208 return ts
->running
;
12212 remote_get_tracepoint_status (struct target_ops
*self
, struct breakpoint
*bp
,
12213 struct uploaded_tp
*utp
)
12215 struct remote_state
*rs
= get_remote_state ();
12217 struct bp_location
*loc
;
12218 struct tracepoint
*tp
= (struct tracepoint
*) bp
;
12219 size_t size
= get_remote_packet_size ();
12223 tp
->base
.hit_count
= 0;
12224 tp
->traceframe_usage
= 0;
12225 for (loc
= tp
->base
.loc
; loc
; loc
= loc
->next
)
12227 /* If the tracepoint was never downloaded, don't go asking for
12229 if (tp
->number_on_target
== 0)
12231 xsnprintf (rs
->buf
, size
, "qTP:%x:%s", tp
->number_on_target
,
12232 phex_nz (loc
->address
, 0));
12234 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
12235 if (reply
&& *reply
)
12238 parse_tracepoint_status (reply
+ 1, bp
, utp
);
12244 utp
->hit_count
= 0;
12245 utp
->traceframe_usage
= 0;
12246 xsnprintf (rs
->buf
, size
, "qTP:%x:%s", utp
->number
,
12247 phex_nz (utp
->addr
, 0));
12249 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
12250 if (reply
&& *reply
)
12253 parse_tracepoint_status (reply
+ 1, bp
, utp
);
12259 remote_trace_stop (struct target_ops
*self
)
12262 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
12263 if (*target_buf
== '\0')
12264 error (_("Target does not support this command."));
12265 if (strcmp (target_buf
, "OK") != 0)
12266 error (_("Bogus reply from target: %s"), target_buf
);
12270 remote_trace_find (struct target_ops
*self
,
12271 enum trace_find_type type
, int num
,
12272 CORE_ADDR addr1
, CORE_ADDR addr2
,
12275 struct remote_state
*rs
= get_remote_state ();
12276 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
12278 int target_frameno
= -1, target_tracept
= -1;
12280 /* Lookups other than by absolute frame number depend on the current
12281 trace selected, so make sure it is correct on the remote end
12283 if (type
!= tfind_number
)
12284 set_remote_traceframe ();
12287 strcpy (p
, "QTFrame:");
12288 p
= strchr (p
, '\0');
12292 xsnprintf (p
, endbuf
- p
, "%x", num
);
12295 xsnprintf (p
, endbuf
- p
, "pc:%s", phex_nz (addr1
, 0));
12298 xsnprintf (p
, endbuf
- p
, "tdp:%x", num
);
12301 xsnprintf (p
, endbuf
- p
, "range:%s:%s", phex_nz (addr1
, 0),
12302 phex_nz (addr2
, 0));
12304 case tfind_outside
:
12305 xsnprintf (p
, endbuf
- p
, "outside:%s:%s", phex_nz (addr1
, 0),
12306 phex_nz (addr2
, 0));
12309 error (_("Unknown trace find type %d"), type
);
12313 reply
= remote_get_noisy_reply (&(rs
->buf
), &rs
->buf_size
);
12314 if (*reply
== '\0')
12315 error (_("Target does not support this command."));
12317 while (reply
&& *reply
)
12322 target_frameno
= (int) strtol (p
, &reply
, 16);
12324 error (_("Unable to parse trace frame number"));
12325 /* Don't update our remote traceframe number cache on failure
12326 to select a remote traceframe. */
12327 if (target_frameno
== -1)
12332 target_tracept
= (int) strtol (p
, &reply
, 16);
12334 error (_("Unable to parse tracepoint number"));
12336 case 'O': /* "OK"? */
12337 if (reply
[1] == 'K' && reply
[2] == '\0')
12340 error (_("Bogus reply from target: %s"), reply
);
12343 error (_("Bogus reply from target: %s"), reply
);
12346 *tpp
= target_tracept
;
12348 rs
->remote_traceframe_number
= target_frameno
;
12349 return target_frameno
;
12353 remote_get_trace_state_variable_value (struct target_ops
*self
,
12354 int tsvnum
, LONGEST
*val
)
12356 struct remote_state
*rs
= get_remote_state ();
12360 set_remote_traceframe ();
12362 xsnprintf (rs
->buf
, get_remote_packet_size (), "qTV:%x", tsvnum
);
12364 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
12365 if (reply
&& *reply
)
12369 unpack_varlen_hex (reply
+ 1, &uval
);
12370 *val
= (LONGEST
) uval
;
12378 remote_save_trace_data (struct target_ops
*self
, const char *filename
)
12380 struct remote_state
*rs
= get_remote_state ();
12384 strcpy (p
, "QTSave:");
12386 if ((p
- rs
->buf
) + strlen (filename
) * 2 >= get_remote_packet_size ())
12387 error (_("Remote file name too long for trace save packet"));
12388 p
+= 2 * bin2hex ((gdb_byte
*) filename
, p
, strlen (filename
));
12391 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
12392 if (*reply
== '\0')
12393 error (_("Target does not support this command."));
12394 if (strcmp (reply
, "OK") != 0)
12395 error (_("Bogus reply from target: %s"), reply
);
12399 /* This is basically a memory transfer, but needs to be its own packet
12400 because we don't know how the target actually organizes its trace
12401 memory, plus we want to be able to ask for as much as possible, but
12402 not be unhappy if we don't get as much as we ask for. */
12405 remote_get_raw_trace_data (struct target_ops
*self
,
12406 gdb_byte
*buf
, ULONGEST offset
, LONGEST len
)
12408 struct remote_state
*rs
= get_remote_state ();
12414 strcpy (p
, "qTBuffer:");
12416 p
+= hexnumstr (p
, offset
);
12418 p
+= hexnumstr (p
, len
);
12422 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
12423 if (reply
&& *reply
)
12425 /* 'l' by itself means we're at the end of the buffer and
12426 there is nothing more to get. */
12430 /* Convert the reply into binary. Limit the number of bytes to
12431 convert according to our passed-in buffer size, rather than
12432 what was returned in the packet; if the target is
12433 unexpectedly generous and gives us a bigger reply than we
12434 asked for, we don't want to crash. */
12435 rslt
= hex2bin (target_buf
, buf
, len
);
12439 /* Something went wrong, flag as an error. */
12444 remote_set_disconnected_tracing (struct target_ops
*self
, int val
)
12446 struct remote_state
*rs
= get_remote_state ();
12448 if (packet_support (PACKET_DisconnectedTracing_feature
) == PACKET_ENABLE
)
12452 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTDisconnected:%x", val
);
12454 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
12455 if (*reply
== '\0')
12456 error (_("Target does not support this command."));
12457 if (strcmp (reply
, "OK") != 0)
12458 error (_("Bogus reply from target: %s"), reply
);
12461 warning (_("Target does not support disconnected tracing."));
12465 remote_core_of_thread (struct target_ops
*ops
, ptid_t ptid
)
12467 struct thread_info
*info
= find_thread_ptid (ptid
);
12469 if (info
&& info
->priv
)
12470 return info
->priv
->core
;
12475 remote_set_circular_trace_buffer (struct target_ops
*self
, int val
)
12477 struct remote_state
*rs
= get_remote_state ();
12480 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTBuffer:circular:%x", val
);
12482 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
12483 if (*reply
== '\0')
12484 error (_("Target does not support this command."));
12485 if (strcmp (reply
, "OK") != 0)
12486 error (_("Bogus reply from target: %s"), reply
);
12489 static struct traceframe_info
*
12490 remote_traceframe_info (struct target_ops
*self
)
12494 text
= target_read_stralloc (¤t_target
,
12495 TARGET_OBJECT_TRACEFRAME_INFO
, NULL
);
12498 struct traceframe_info
*info
;
12499 struct cleanup
*back_to
= make_cleanup (xfree
, text
);
12501 info
= parse_traceframe_info (text
);
12502 do_cleanups (back_to
);
12509 /* Handle the qTMinFTPILen packet. Returns the minimum length of
12510 instruction on which a fast tracepoint may be placed. Returns -1
12511 if the packet is not supported, and 0 if the minimum instruction
12512 length is unknown. */
12515 remote_get_min_fast_tracepoint_insn_len (struct target_ops
*self
)
12517 struct remote_state
*rs
= get_remote_state ();
12520 /* If we're not debugging a process yet, the IPA can't be
12522 if (!target_has_execution
)
12525 /* Make sure the remote is pointing at the right process. */
12526 set_general_process ();
12528 xsnprintf (rs
->buf
, get_remote_packet_size (), "qTMinFTPILen");
12530 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
12531 if (*reply
== '\0')
12535 ULONGEST min_insn_len
;
12537 unpack_varlen_hex (reply
, &min_insn_len
);
12539 return (int) min_insn_len
;
12544 remote_set_trace_buffer_size (struct target_ops
*self
, LONGEST val
)
12546 if (packet_support (PACKET_QTBuffer_size
) != PACKET_DISABLE
)
12548 struct remote_state
*rs
= get_remote_state ();
12549 char *buf
= rs
->buf
;
12550 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
12551 enum packet_result result
;
12553 gdb_assert (val
>= 0 || val
== -1);
12554 buf
+= xsnprintf (buf
, endbuf
- buf
, "QTBuffer:size:");
12555 /* Send -1 as literal "-1" to avoid host size dependency. */
12559 buf
+= hexnumstr (buf
, (ULONGEST
) -val
);
12562 buf
+= hexnumstr (buf
, (ULONGEST
) val
);
12565 remote_get_noisy_reply (&rs
->buf
, &rs
->buf_size
);
12566 result
= packet_ok (rs
->buf
,
12567 &remote_protocol_packets
[PACKET_QTBuffer_size
]);
12569 if (result
!= PACKET_OK
)
12570 warning (_("Bogus reply from target: %s"), rs
->buf
);
12575 remote_set_trace_notes (struct target_ops
*self
,
12576 const char *user
, const char *notes
,
12577 const char *stop_notes
)
12579 struct remote_state
*rs
= get_remote_state ();
12581 char *buf
= rs
->buf
;
12582 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
12585 buf
+= xsnprintf (buf
, endbuf
- buf
, "QTNotes:");
12588 buf
+= xsnprintf (buf
, endbuf
- buf
, "user:");
12589 nbytes
= bin2hex ((gdb_byte
*) user
, buf
, strlen (user
));
12595 buf
+= xsnprintf (buf
, endbuf
- buf
, "notes:");
12596 nbytes
= bin2hex ((gdb_byte
*) notes
, buf
, strlen (notes
));
12602 buf
+= xsnprintf (buf
, endbuf
- buf
, "tstop:");
12603 nbytes
= bin2hex ((gdb_byte
*) stop_notes
, buf
, strlen (stop_notes
));
12607 /* Ensure the buffer is terminated. */
12611 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
12612 if (*reply
== '\0')
12615 if (strcmp (reply
, "OK") != 0)
12616 error (_("Bogus reply from target: %s"), reply
);
12622 remote_use_agent (struct target_ops
*self
, int use
)
12624 if (packet_support (PACKET_QAgent
) != PACKET_DISABLE
)
12626 struct remote_state
*rs
= get_remote_state ();
12628 /* If the stub supports QAgent. */
12629 xsnprintf (rs
->buf
, get_remote_packet_size (), "QAgent:%d", use
);
12631 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
12633 if (strcmp (rs
->buf
, "OK") == 0)
12644 remote_can_use_agent (struct target_ops
*self
)
12646 return (packet_support (PACKET_QAgent
) != PACKET_DISABLE
);
12649 struct btrace_target_info
12651 /* The ptid of the traced thread. */
12654 /* The obtained branch trace configuration. */
12655 struct btrace_config conf
;
12658 /* Reset our idea of our target's btrace configuration. */
12661 remote_btrace_reset (void)
12663 struct remote_state
*rs
= get_remote_state ();
12665 memset (&rs
->btrace_config
, 0, sizeof (rs
->btrace_config
));
12668 /* Check whether the target supports branch tracing. */
12671 remote_supports_btrace (struct target_ops
*self
, enum btrace_format format
)
12673 if (packet_support (PACKET_Qbtrace_off
) != PACKET_ENABLE
)
12675 if (packet_support (PACKET_qXfer_btrace
) != PACKET_ENABLE
)
12680 case BTRACE_FORMAT_NONE
:
12683 case BTRACE_FORMAT_BTS
:
12684 return (packet_support (PACKET_Qbtrace_bts
) == PACKET_ENABLE
);
12686 case BTRACE_FORMAT_PT
:
12687 /* The trace is decoded on the host. Even if our target supports it,
12688 we still need to have libipt to decode the trace. */
12689 #if defined (HAVE_LIBIPT)
12690 return (packet_support (PACKET_Qbtrace_pt
) == PACKET_ENABLE
);
12691 #else /* !defined (HAVE_LIBIPT) */
12693 #endif /* !defined (HAVE_LIBIPT) */
12696 internal_error (__FILE__
, __LINE__
, _("Unknown branch trace format"));
12699 /* Synchronize the configuration with the target. */
12702 btrace_sync_conf (const struct btrace_config
*conf
)
12704 struct packet_config
*packet
;
12705 struct remote_state
*rs
;
12706 char *buf
, *pos
, *endbuf
;
12708 rs
= get_remote_state ();
12710 endbuf
= buf
+ get_remote_packet_size ();
12712 packet
= &remote_protocol_packets
[PACKET_Qbtrace_conf_bts_size
];
12713 if (packet_config_support (packet
) == PACKET_ENABLE
12714 && conf
->bts
.size
!= rs
->btrace_config
.bts
.size
)
12717 pos
+= xsnprintf (pos
, endbuf
- pos
, "%s=0x%x", packet
->name
,
12721 getpkt (&buf
, &rs
->buf_size
, 0);
12723 if (packet_ok (buf
, packet
) == PACKET_ERROR
)
12725 if (buf
[0] == 'E' && buf
[1] == '.')
12726 error (_("Failed to configure the BTS buffer size: %s"), buf
+ 2);
12728 error (_("Failed to configure the BTS buffer size."));
12731 rs
->btrace_config
.bts
.size
= conf
->bts
.size
;
12734 packet
= &remote_protocol_packets
[PACKET_Qbtrace_conf_pt_size
];
12735 if (packet_config_support (packet
) == PACKET_ENABLE
12736 && conf
->pt
.size
!= rs
->btrace_config
.pt
.size
)
12739 pos
+= xsnprintf (pos
, endbuf
- pos
, "%s=0x%x", packet
->name
,
12743 getpkt (&buf
, &rs
->buf_size
, 0);
12745 if (packet_ok (buf
, packet
) == PACKET_ERROR
)
12747 if (buf
[0] == 'E' && buf
[1] == '.')
12748 error (_("Failed to configure the trace buffer size: %s"), buf
+ 2);
12750 error (_("Failed to configure the trace buffer size."));
12753 rs
->btrace_config
.pt
.size
= conf
->pt
.size
;
12757 /* Read the current thread's btrace configuration from the target and
12758 store it into CONF. */
12761 btrace_read_config (struct btrace_config
*conf
)
12765 xml
= target_read_stralloc (¤t_target
,
12766 TARGET_OBJECT_BTRACE_CONF
, "");
12769 struct cleanup
*cleanup
;
12771 cleanup
= make_cleanup (xfree
, xml
);
12772 parse_xml_btrace_conf (conf
, xml
);
12773 do_cleanups (cleanup
);
12777 /* Enable branch tracing. */
12779 static struct btrace_target_info
*
12780 remote_enable_btrace (struct target_ops
*self
, ptid_t ptid
,
12781 const struct btrace_config
*conf
)
12783 struct btrace_target_info
*tinfo
= NULL
;
12784 struct packet_config
*packet
= NULL
;
12785 struct remote_state
*rs
= get_remote_state ();
12786 char *buf
= rs
->buf
;
12787 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
12789 switch (conf
->format
)
12791 case BTRACE_FORMAT_BTS
:
12792 packet
= &remote_protocol_packets
[PACKET_Qbtrace_bts
];
12795 case BTRACE_FORMAT_PT
:
12796 packet
= &remote_protocol_packets
[PACKET_Qbtrace_pt
];
12800 if (packet
== NULL
|| packet_config_support (packet
) != PACKET_ENABLE
)
12801 error (_("Target does not support branch tracing."));
12803 btrace_sync_conf (conf
);
12805 set_general_thread (ptid
);
12807 buf
+= xsnprintf (buf
, endbuf
- buf
, "%s", packet
->name
);
12809 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
12811 if (packet_ok (rs
->buf
, packet
) == PACKET_ERROR
)
12813 if (rs
->buf
[0] == 'E' && rs
->buf
[1] == '.')
12814 error (_("Could not enable branch tracing for %s: %s"),
12815 target_pid_to_str (ptid
), rs
->buf
+ 2);
12817 error (_("Could not enable branch tracing for %s."),
12818 target_pid_to_str (ptid
));
12821 tinfo
= XCNEW (struct btrace_target_info
);
12822 tinfo
->ptid
= ptid
;
12824 /* If we fail to read the configuration, we lose some information, but the
12825 tracing itself is not impacted. */
12828 btrace_read_config (&tinfo
->conf
);
12830 CATCH (err
, RETURN_MASK_ERROR
)
12832 if (err
.message
!= NULL
)
12833 warning ("%s", err
.message
);
12840 /* Disable branch tracing. */
12843 remote_disable_btrace (struct target_ops
*self
,
12844 struct btrace_target_info
*tinfo
)
12846 struct packet_config
*packet
= &remote_protocol_packets
[PACKET_Qbtrace_off
];
12847 struct remote_state
*rs
= get_remote_state ();
12848 char *buf
= rs
->buf
;
12849 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
12851 if (packet_config_support (packet
) != PACKET_ENABLE
)
12852 error (_("Target does not support branch tracing."));
12854 set_general_thread (tinfo
->ptid
);
12856 buf
+= xsnprintf (buf
, endbuf
- buf
, "%s", packet
->name
);
12858 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
12860 if (packet_ok (rs
->buf
, packet
) == PACKET_ERROR
)
12862 if (rs
->buf
[0] == 'E' && rs
->buf
[1] == '.')
12863 error (_("Could not disable branch tracing for %s: %s"),
12864 target_pid_to_str (tinfo
->ptid
), rs
->buf
+ 2);
12866 error (_("Could not disable branch tracing for %s."),
12867 target_pid_to_str (tinfo
->ptid
));
12873 /* Teardown branch tracing. */
12876 remote_teardown_btrace (struct target_ops
*self
,
12877 struct btrace_target_info
*tinfo
)
12879 /* We must not talk to the target during teardown. */
12883 /* Read the branch trace. */
12885 static enum btrace_error
12886 remote_read_btrace (struct target_ops
*self
,
12887 struct btrace_data
*btrace
,
12888 struct btrace_target_info
*tinfo
,
12889 enum btrace_read_type type
)
12891 struct packet_config
*packet
= &remote_protocol_packets
[PACKET_qXfer_btrace
];
12892 struct cleanup
*cleanup
;
12896 if (packet_config_support (packet
) != PACKET_ENABLE
)
12897 error (_("Target does not support branch tracing."));
12899 #if !defined(HAVE_LIBEXPAT)
12900 error (_("Cannot process branch tracing result. XML parsing not supported."));
12905 case BTRACE_READ_ALL
:
12908 case BTRACE_READ_NEW
:
12911 case BTRACE_READ_DELTA
:
12915 internal_error (__FILE__
, __LINE__
,
12916 _("Bad branch tracing read type: %u."),
12917 (unsigned int) type
);
12920 xml
= target_read_stralloc (¤t_target
,
12921 TARGET_OBJECT_BTRACE
, annex
);
12923 return BTRACE_ERR_UNKNOWN
;
12925 cleanup
= make_cleanup (xfree
, xml
);
12926 parse_xml_btrace (btrace
, xml
);
12927 do_cleanups (cleanup
);
12929 return BTRACE_ERR_NONE
;
12932 static const struct btrace_config
*
12933 remote_btrace_conf (struct target_ops
*self
,
12934 const struct btrace_target_info
*tinfo
)
12936 return &tinfo
->conf
;
12940 remote_augmented_libraries_svr4_read (struct target_ops
*self
)
12942 return (packet_support (PACKET_augmented_libraries_svr4_read_feature
)
12946 /* Implementation of to_load. */
12949 remote_load (struct target_ops
*self
, const char *name
, int from_tty
)
12951 generic_load (name
, from_tty
);
12954 /* Accepts an integer PID; returns a string representing a file that
12955 can be opened on the remote side to get the symbols for the child
12956 process. Returns NULL if the operation is not supported. */
12959 remote_pid_to_exec_file (struct target_ops
*self
, int pid
)
12961 static char *filename
= NULL
;
12962 struct inferior
*inf
;
12963 char *annex
= NULL
;
12965 if (packet_support (PACKET_qXfer_exec_file
) != PACKET_ENABLE
)
12968 if (filename
!= NULL
)
12971 inf
= find_inferior_pid (pid
);
12973 internal_error (__FILE__
, __LINE__
,
12974 _("not currently attached to process %d"), pid
);
12976 if (!inf
->fake_pid_p
)
12978 const int annex_size
= 9;
12980 annex
= (char *) alloca (annex_size
);
12981 xsnprintf (annex
, annex_size
, "%x", pid
);
12984 filename
= target_read_stralloc (¤t_target
,
12985 TARGET_OBJECT_EXEC_FILE
, annex
);
12990 /* Implement the to_can_do_single_step target_ops method. */
12993 remote_can_do_single_step (struct target_ops
*ops
)
12995 /* We can only tell whether target supports single step or not by
12996 supported s and S vCont actions if the stub supports vContSupported
12997 feature. If the stub doesn't support vContSupported feature,
12998 we have conservatively to think target doesn't supports single
13000 if (packet_support (PACKET_vContSupported
) == PACKET_ENABLE
)
13002 struct remote_state
*rs
= get_remote_state ();
13004 if (packet_support (PACKET_vCont
) == PACKET_SUPPORT_UNKNOWN
)
13005 remote_vcont_probe (rs
);
13007 return rs
->supports_vCont
.s
&& rs
->supports_vCont
.S
;
13013 /* Implementation of the to_execution_direction method for the remote
13016 static enum exec_direction_kind
13017 remote_execution_direction (struct target_ops
*self
)
13019 struct remote_state
*rs
= get_remote_state ();
13021 return rs
->last_resume_exec_dir
;
13025 init_remote_ops (void)
13027 remote_ops
.to_shortname
= "remote";
13028 remote_ops
.to_longname
= "Remote serial target in gdb-specific protocol";
13029 remote_ops
.to_doc
=
13030 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
13031 Specify the serial device it is connected to\n\
13032 (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).";
13033 remote_ops
.to_open
= remote_open
;
13034 remote_ops
.to_close
= remote_close
;
13035 remote_ops
.to_detach
= remote_detach
;
13036 remote_ops
.to_disconnect
= remote_disconnect
;
13037 remote_ops
.to_resume
= remote_resume
;
13038 remote_ops
.to_wait
= remote_wait
;
13039 remote_ops
.to_fetch_registers
= remote_fetch_registers
;
13040 remote_ops
.to_store_registers
= remote_store_registers
;
13041 remote_ops
.to_prepare_to_store
= remote_prepare_to_store
;
13042 remote_ops
.to_files_info
= remote_files_info
;
13043 remote_ops
.to_insert_breakpoint
= remote_insert_breakpoint
;
13044 remote_ops
.to_remove_breakpoint
= remote_remove_breakpoint
;
13045 remote_ops
.to_stopped_by_sw_breakpoint
= remote_stopped_by_sw_breakpoint
;
13046 remote_ops
.to_supports_stopped_by_sw_breakpoint
= remote_supports_stopped_by_sw_breakpoint
;
13047 remote_ops
.to_stopped_by_hw_breakpoint
= remote_stopped_by_hw_breakpoint
;
13048 remote_ops
.to_supports_stopped_by_hw_breakpoint
= remote_supports_stopped_by_hw_breakpoint
;
13049 remote_ops
.to_stopped_by_watchpoint
= remote_stopped_by_watchpoint
;
13050 remote_ops
.to_stopped_data_address
= remote_stopped_data_address
;
13051 remote_ops
.to_watchpoint_addr_within_range
=
13052 remote_watchpoint_addr_within_range
;
13053 remote_ops
.to_can_use_hw_breakpoint
= remote_check_watch_resources
;
13054 remote_ops
.to_insert_hw_breakpoint
= remote_insert_hw_breakpoint
;
13055 remote_ops
.to_remove_hw_breakpoint
= remote_remove_hw_breakpoint
;
13056 remote_ops
.to_region_ok_for_hw_watchpoint
13057 = remote_region_ok_for_hw_watchpoint
;
13058 remote_ops
.to_insert_watchpoint
= remote_insert_watchpoint
;
13059 remote_ops
.to_remove_watchpoint
= remote_remove_watchpoint
;
13060 remote_ops
.to_kill
= remote_kill
;
13061 remote_ops
.to_load
= remote_load
;
13062 remote_ops
.to_mourn_inferior
= remote_mourn
;
13063 remote_ops
.to_pass_signals
= remote_pass_signals
;
13064 remote_ops
.to_set_syscall_catchpoint
= remote_set_syscall_catchpoint
;
13065 remote_ops
.to_program_signals
= remote_program_signals
;
13066 remote_ops
.to_thread_alive
= remote_thread_alive
;
13067 remote_ops
.to_thread_name
= remote_thread_name
;
13068 remote_ops
.to_update_thread_list
= remote_update_thread_list
;
13069 remote_ops
.to_pid_to_str
= remote_pid_to_str
;
13070 remote_ops
.to_extra_thread_info
= remote_threads_extra_info
;
13071 remote_ops
.to_get_ada_task_ptid
= remote_get_ada_task_ptid
;
13072 remote_ops
.to_stop
= remote_stop
;
13073 remote_ops
.to_interrupt
= remote_interrupt
;
13074 remote_ops
.to_pass_ctrlc
= remote_pass_ctrlc
;
13075 remote_ops
.to_xfer_partial
= remote_xfer_partial
;
13076 remote_ops
.to_rcmd
= remote_rcmd
;
13077 remote_ops
.to_pid_to_exec_file
= remote_pid_to_exec_file
;
13078 remote_ops
.to_log_command
= serial_log_command
;
13079 remote_ops
.to_get_thread_local_address
= remote_get_thread_local_address
;
13080 remote_ops
.to_stratum
= process_stratum
;
13081 remote_ops
.to_has_all_memory
= default_child_has_all_memory
;
13082 remote_ops
.to_has_memory
= default_child_has_memory
;
13083 remote_ops
.to_has_stack
= default_child_has_stack
;
13084 remote_ops
.to_has_registers
= default_child_has_registers
;
13085 remote_ops
.to_has_execution
= default_child_has_execution
;
13086 remote_ops
.to_has_thread_control
= tc_schedlock
; /* can lock scheduler */
13087 remote_ops
.to_can_execute_reverse
= remote_can_execute_reverse
;
13088 remote_ops
.to_magic
= OPS_MAGIC
;
13089 remote_ops
.to_memory_map
= remote_memory_map
;
13090 remote_ops
.to_flash_erase
= remote_flash_erase
;
13091 remote_ops
.to_flash_done
= remote_flash_done
;
13092 remote_ops
.to_read_description
= remote_read_description
;
13093 remote_ops
.to_search_memory
= remote_search_memory
;
13094 remote_ops
.to_can_async_p
= remote_can_async_p
;
13095 remote_ops
.to_is_async_p
= remote_is_async_p
;
13096 remote_ops
.to_async
= remote_async
;
13097 remote_ops
.to_thread_events
= remote_thread_events
;
13098 remote_ops
.to_can_do_single_step
= remote_can_do_single_step
;
13099 remote_ops
.to_terminal_inferior
= remote_terminal_inferior
;
13100 remote_ops
.to_terminal_ours
= remote_terminal_ours
;
13101 remote_ops
.to_supports_non_stop
= remote_supports_non_stop
;
13102 remote_ops
.to_supports_multi_process
= remote_supports_multi_process
;
13103 remote_ops
.to_supports_disable_randomization
13104 = remote_supports_disable_randomization
;
13105 remote_ops
.to_filesystem_is_local
= remote_filesystem_is_local
;
13106 remote_ops
.to_fileio_open
= remote_hostio_open
;
13107 remote_ops
.to_fileio_pwrite
= remote_hostio_pwrite
;
13108 remote_ops
.to_fileio_pread
= remote_hostio_pread
;
13109 remote_ops
.to_fileio_fstat
= remote_hostio_fstat
;
13110 remote_ops
.to_fileio_close
= remote_hostio_close
;
13111 remote_ops
.to_fileio_unlink
= remote_hostio_unlink
;
13112 remote_ops
.to_fileio_readlink
= remote_hostio_readlink
;
13113 remote_ops
.to_supports_enable_disable_tracepoint
= remote_supports_enable_disable_tracepoint
;
13114 remote_ops
.to_supports_string_tracing
= remote_supports_string_tracing
;
13115 remote_ops
.to_supports_evaluation_of_breakpoint_conditions
= remote_supports_cond_breakpoints
;
13116 remote_ops
.to_can_run_breakpoint_commands
= remote_can_run_breakpoint_commands
;
13117 remote_ops
.to_trace_init
= remote_trace_init
;
13118 remote_ops
.to_download_tracepoint
= remote_download_tracepoint
;
13119 remote_ops
.to_can_download_tracepoint
= remote_can_download_tracepoint
;
13120 remote_ops
.to_download_trace_state_variable
13121 = remote_download_trace_state_variable
;
13122 remote_ops
.to_enable_tracepoint
= remote_enable_tracepoint
;
13123 remote_ops
.to_disable_tracepoint
= remote_disable_tracepoint
;
13124 remote_ops
.to_trace_set_readonly_regions
= remote_trace_set_readonly_regions
;
13125 remote_ops
.to_trace_start
= remote_trace_start
;
13126 remote_ops
.to_get_trace_status
= remote_get_trace_status
;
13127 remote_ops
.to_get_tracepoint_status
= remote_get_tracepoint_status
;
13128 remote_ops
.to_trace_stop
= remote_trace_stop
;
13129 remote_ops
.to_trace_find
= remote_trace_find
;
13130 remote_ops
.to_get_trace_state_variable_value
13131 = remote_get_trace_state_variable_value
;
13132 remote_ops
.to_save_trace_data
= remote_save_trace_data
;
13133 remote_ops
.to_upload_tracepoints
= remote_upload_tracepoints
;
13134 remote_ops
.to_upload_trace_state_variables
13135 = remote_upload_trace_state_variables
;
13136 remote_ops
.to_get_raw_trace_data
= remote_get_raw_trace_data
;
13137 remote_ops
.to_get_min_fast_tracepoint_insn_len
= remote_get_min_fast_tracepoint_insn_len
;
13138 remote_ops
.to_set_disconnected_tracing
= remote_set_disconnected_tracing
;
13139 remote_ops
.to_set_circular_trace_buffer
= remote_set_circular_trace_buffer
;
13140 remote_ops
.to_set_trace_buffer_size
= remote_set_trace_buffer_size
;
13141 remote_ops
.to_set_trace_notes
= remote_set_trace_notes
;
13142 remote_ops
.to_core_of_thread
= remote_core_of_thread
;
13143 remote_ops
.to_verify_memory
= remote_verify_memory
;
13144 remote_ops
.to_get_tib_address
= remote_get_tib_address
;
13145 remote_ops
.to_set_permissions
= remote_set_permissions
;
13146 remote_ops
.to_static_tracepoint_marker_at
13147 = remote_static_tracepoint_marker_at
;
13148 remote_ops
.to_static_tracepoint_markers_by_strid
13149 = remote_static_tracepoint_markers_by_strid
;
13150 remote_ops
.to_traceframe_info
= remote_traceframe_info
;
13151 remote_ops
.to_use_agent
= remote_use_agent
;
13152 remote_ops
.to_can_use_agent
= remote_can_use_agent
;
13153 remote_ops
.to_supports_btrace
= remote_supports_btrace
;
13154 remote_ops
.to_enable_btrace
= remote_enable_btrace
;
13155 remote_ops
.to_disable_btrace
= remote_disable_btrace
;
13156 remote_ops
.to_teardown_btrace
= remote_teardown_btrace
;
13157 remote_ops
.to_read_btrace
= remote_read_btrace
;
13158 remote_ops
.to_btrace_conf
= remote_btrace_conf
;
13159 remote_ops
.to_augmented_libraries_svr4_read
=
13160 remote_augmented_libraries_svr4_read
;
13161 remote_ops
.to_follow_fork
= remote_follow_fork
;
13162 remote_ops
.to_follow_exec
= remote_follow_exec
;
13163 remote_ops
.to_insert_fork_catchpoint
= remote_insert_fork_catchpoint
;
13164 remote_ops
.to_remove_fork_catchpoint
= remote_remove_fork_catchpoint
;
13165 remote_ops
.to_insert_vfork_catchpoint
= remote_insert_vfork_catchpoint
;
13166 remote_ops
.to_remove_vfork_catchpoint
= remote_remove_vfork_catchpoint
;
13167 remote_ops
.to_insert_exec_catchpoint
= remote_insert_exec_catchpoint
;
13168 remote_ops
.to_remove_exec_catchpoint
= remote_remove_exec_catchpoint
;
13169 remote_ops
.to_execution_direction
= remote_execution_direction
;
13172 /* Set up the extended remote vector by making a copy of the standard
13173 remote vector and adding to it. */
13176 init_extended_remote_ops (void)
13178 extended_remote_ops
= remote_ops
;
13180 extended_remote_ops
.to_shortname
= "extended-remote";
13181 extended_remote_ops
.to_longname
=
13182 "Extended remote serial target in gdb-specific protocol";
13183 extended_remote_ops
.to_doc
=
13184 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
13185 Specify the serial device it is connected to (e.g. /dev/ttya).";
13186 extended_remote_ops
.to_open
= extended_remote_open
;
13187 extended_remote_ops
.to_create_inferior
= extended_remote_create_inferior
;
13188 extended_remote_ops
.to_detach
= extended_remote_detach
;
13189 extended_remote_ops
.to_attach
= extended_remote_attach
;
13190 extended_remote_ops
.to_post_attach
= extended_remote_post_attach
;
13191 extended_remote_ops
.to_supports_disable_randomization
13192 = extended_remote_supports_disable_randomization
;
13196 remote_can_async_p (struct target_ops
*ops
)
13198 struct remote_state
*rs
= get_remote_state ();
13200 if (!target_async_permitted
)
13201 /* We only enable async when the user specifically asks for it. */
13204 /* We're async whenever the serial device is. */
13205 return serial_can_async_p (rs
->remote_desc
);
13209 remote_is_async_p (struct target_ops
*ops
)
13211 struct remote_state
*rs
= get_remote_state ();
13213 if (!target_async_permitted
)
13214 /* We only enable async when the user specifically asks for it. */
13217 /* We're async whenever the serial device is. */
13218 return serial_is_async_p (rs
->remote_desc
);
13221 /* Pass the SERIAL event on and up to the client. One day this code
13222 will be able to delay notifying the client of an event until the
13223 point where an entire packet has been received. */
13225 static serial_event_ftype remote_async_serial_handler
;
13228 remote_async_serial_handler (struct serial
*scb
, void *context
)
13230 /* Don't propogate error information up to the client. Instead let
13231 the client find out about the error by querying the target. */
13232 inferior_event_handler (INF_REG_EVENT
, NULL
);
13236 remote_async_inferior_event_handler (gdb_client_data data
)
13238 inferior_event_handler (INF_REG_EVENT
, NULL
);
13242 remote_async (struct target_ops
*ops
, int enable
)
13244 struct remote_state
*rs
= get_remote_state ();
13248 serial_async (rs
->remote_desc
, remote_async_serial_handler
, rs
);
13250 /* If there are pending events in the stop reply queue tell the
13251 event loop to process them. */
13252 if (!QUEUE_is_empty (stop_reply_p
, stop_reply_queue
))
13253 mark_async_event_handler (remote_async_inferior_event_token
);
13254 /* For simplicity, below we clear the pending events token
13255 without remembering whether it is marked, so here we always
13256 mark it. If there's actually no pending notification to
13257 process, this ends up being a no-op (other than a spurious
13258 event-loop wakeup). */
13259 if (target_is_non_stop_p ())
13260 mark_async_event_handler (rs
->notif_state
->get_pending_events_token
);
13264 serial_async (rs
->remote_desc
, NULL
, NULL
);
13265 /* If the core is disabling async, it doesn't want to be
13266 disturbed with target events. Clear all async event sources
13268 clear_async_event_handler (remote_async_inferior_event_token
);
13269 if (target_is_non_stop_p ())
13270 clear_async_event_handler (rs
->notif_state
->get_pending_events_token
);
13274 /* Implementation of the to_thread_events method. */
13277 remote_thread_events (struct target_ops
*ops
, int enable
)
13279 struct remote_state
*rs
= get_remote_state ();
13280 size_t size
= get_remote_packet_size ();
13282 if (packet_support (PACKET_QThreadEvents
) == PACKET_DISABLE
)
13285 xsnprintf (rs
->buf
, size
, "QThreadEvents:%x", enable
? 1 : 0);
13287 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
13289 switch (packet_ok (rs
->buf
,
13290 &remote_protocol_packets
[PACKET_QThreadEvents
]))
13293 if (strcmp (rs
->buf
, "OK") != 0)
13294 error (_("Remote refused setting thread events: %s"), rs
->buf
);
13297 warning (_("Remote failure reply: %s"), rs
->buf
);
13299 case PACKET_UNKNOWN
:
13305 set_remote_cmd (char *args
, int from_tty
)
13307 help_list (remote_set_cmdlist
, "set remote ", all_commands
, gdb_stdout
);
13311 show_remote_cmd (char *args
, int from_tty
)
13313 /* We can't just use cmd_show_list here, because we want to skip
13314 the redundant "show remote Z-packet" and the legacy aliases. */
13315 struct cleanup
*showlist_chain
;
13316 struct cmd_list_element
*list
= remote_show_cmdlist
;
13317 struct ui_out
*uiout
= current_uiout
;
13319 showlist_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "showlist");
13320 for (; list
!= NULL
; list
= list
->next
)
13321 if (strcmp (list
->name
, "Z-packet") == 0)
13323 else if (list
->type
== not_set_cmd
)
13324 /* Alias commands are exactly like the original, except they
13325 don't have the normal type. */
13329 struct cleanup
*option_chain
13330 = make_cleanup_ui_out_tuple_begin_end (uiout
, "option");
13332 ui_out_field_string (uiout
, "name", list
->name
);
13333 ui_out_text (uiout
, ": ");
13334 if (list
->type
== show_cmd
)
13335 do_show_command ((char *) NULL
, from_tty
, list
);
13337 cmd_func (list
, NULL
, from_tty
);
13338 /* Close the tuple. */
13339 do_cleanups (option_chain
);
13342 /* Close the tuple. */
13343 do_cleanups (showlist_chain
);
13347 /* Function to be called whenever a new objfile (shlib) is detected. */
13349 remote_new_objfile (struct objfile
*objfile
)
13351 struct remote_state
*rs
= get_remote_state ();
13353 if (rs
->remote_desc
!= 0) /* Have a remote connection. */
13354 remote_check_symbols ();
13357 /* Pull all the tracepoints defined on the target and create local
13358 data structures representing them. We don't want to create real
13359 tracepoints yet, we don't want to mess up the user's existing
13363 remote_upload_tracepoints (struct target_ops
*self
, struct uploaded_tp
**utpp
)
13365 struct remote_state
*rs
= get_remote_state ();
13368 /* Ask for a first packet of tracepoint definition. */
13370 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
13372 while (*p
&& *p
!= 'l')
13374 parse_tracepoint_definition (p
, utpp
);
13375 /* Ask for another packet of tracepoint definition. */
13377 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
13384 remote_upload_trace_state_variables (struct target_ops
*self
,
13385 struct uploaded_tsv
**utsvp
)
13387 struct remote_state
*rs
= get_remote_state ();
13390 /* Ask for a first packet of variable definition. */
13392 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
13394 while (*p
&& *p
!= 'l')
13396 parse_tsv_definition (p
, utsvp
);
13397 /* Ask for another packet of variable definition. */
13399 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
13405 /* The "set/show range-stepping" show hook. */
13408 show_range_stepping (struct ui_file
*file
, int from_tty
,
13409 struct cmd_list_element
*c
,
13412 fprintf_filtered (file
,
13413 _("Debugger's willingness to use range stepping "
13414 "is %s.\n"), value
);
13417 /* The "set/show range-stepping" set hook. */
13420 set_range_stepping (char *ignore_args
, int from_tty
,
13421 struct cmd_list_element
*c
)
13423 struct remote_state
*rs
= get_remote_state ();
13425 /* Whene enabling, check whether range stepping is actually
13426 supported by the target, and warn if not. */
13427 if (use_range_stepping
)
13429 if (rs
->remote_desc
!= NULL
)
13431 if (packet_support (PACKET_vCont
) == PACKET_SUPPORT_UNKNOWN
)
13432 remote_vcont_probe (rs
);
13434 if (packet_support (PACKET_vCont
) == PACKET_ENABLE
13435 && rs
->supports_vCont
.r
)
13439 warning (_("Range stepping is not supported by the current target"));
13444 _initialize_remote (void)
13446 struct cmd_list_element
*cmd
;
13447 const char *cmd_name
;
13449 /* architecture specific data */
13450 remote_gdbarch_data_handle
=
13451 gdbarch_data_register_post_init (init_remote_state
);
13452 remote_g_packet_data_handle
=
13453 gdbarch_data_register_pre_init (remote_g_packet_data_init
);
13456 = register_program_space_data_with_cleanup (NULL
,
13457 remote_pspace_data_cleanup
);
13459 /* Initialize the per-target state. At the moment there is only one
13460 of these, not one per target. Only one target is active at a
13462 remote_state
= new_remote_state ();
13464 init_remote_ops ();
13465 add_target (&remote_ops
);
13467 init_extended_remote_ops ();
13468 add_target (&extended_remote_ops
);
13470 /* Hook into new objfile notification. */
13471 observer_attach_new_objfile (remote_new_objfile
);
13472 /* We're no longer interested in notification events of an inferior
13474 observer_attach_inferior_exit (discard_pending_stop_replies
);
13477 init_remote_threadtests ();
13480 stop_reply_queue
= QUEUE_alloc (stop_reply_p
, stop_reply_xfree
);
13481 /* set/show remote ... */
13483 add_prefix_cmd ("remote", class_maintenance
, set_remote_cmd
, _("\
13484 Remote protocol specific variables\n\
13485 Configure various remote-protocol specific variables such as\n\
13486 the packets being used"),
13487 &remote_set_cmdlist
, "set remote ",
13488 0 /* allow-unknown */, &setlist
);
13489 add_prefix_cmd ("remote", class_maintenance
, show_remote_cmd
, _("\
13490 Remote protocol specific variables\n\
13491 Configure various remote-protocol specific variables such as\n\
13492 the packets being used"),
13493 &remote_show_cmdlist
, "show remote ",
13494 0 /* allow-unknown */, &showlist
);
13496 add_cmd ("compare-sections", class_obscure
, compare_sections_command
, _("\
13497 Compare section data on target to the exec file.\n\
13498 Argument is a single section name (default: all loaded sections).\n\
13499 To compare only read-only loaded sections, specify the -r option."),
13502 add_cmd ("packet", class_maintenance
, packet_command
, _("\
13503 Send an arbitrary packet to a remote target.\n\
13504 maintenance packet TEXT\n\
13505 If GDB is talking to an inferior via the GDB serial protocol, then\n\
13506 this command sends the string TEXT to the inferior, and displays the\n\
13507 response packet. GDB supplies the initial `$' character, and the\n\
13508 terminating `#' character and checksum."),
13511 add_setshow_boolean_cmd ("remotebreak", no_class
, &remote_break
, _("\
13512 Set whether to send break if interrupted."), _("\
13513 Show whether to send break if interrupted."), _("\
13514 If set, a break, instead of a cntrl-c, is sent to the remote target."),
13515 set_remotebreak
, show_remotebreak
,
13516 &setlist
, &showlist
);
13517 cmd_name
= "remotebreak";
13518 cmd
= lookup_cmd (&cmd_name
, setlist
, "", -1, 1);
13519 deprecate_cmd (cmd
, "set remote interrupt-sequence");
13520 cmd_name
= "remotebreak"; /* needed because lookup_cmd updates the pointer */
13521 cmd
= lookup_cmd (&cmd_name
, showlist
, "", -1, 1);
13522 deprecate_cmd (cmd
, "show remote interrupt-sequence");
13524 add_setshow_enum_cmd ("interrupt-sequence", class_support
,
13525 interrupt_sequence_modes
, &interrupt_sequence_mode
,
13527 Set interrupt sequence to remote target."), _("\
13528 Show interrupt sequence to remote target."), _("\
13529 Valid value is \"Ctrl-C\", \"BREAK\" or \"BREAK-g\". The default is \"Ctrl-C\"."),
13530 NULL
, show_interrupt_sequence
,
13531 &remote_set_cmdlist
,
13532 &remote_show_cmdlist
);
13534 add_setshow_boolean_cmd ("interrupt-on-connect", class_support
,
13535 &interrupt_on_connect
, _("\
13536 Set whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \
13537 Show whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \
13538 If set, interrupt sequence is sent to remote target."),
13540 &remote_set_cmdlist
, &remote_show_cmdlist
);
13542 /* Install commands for configuring memory read/write packets. */
13544 add_cmd ("remotewritesize", no_class
, set_memory_write_packet_size
, _("\
13545 Set the maximum number of bytes per memory write packet (deprecated)."),
13547 add_cmd ("remotewritesize", no_class
, show_memory_write_packet_size
, _("\
13548 Show the maximum number of bytes per memory write packet (deprecated)."),
13550 add_cmd ("memory-write-packet-size", no_class
,
13551 set_memory_write_packet_size
, _("\
13552 Set the maximum number of bytes per memory-write packet.\n\
13553 Specify the number of bytes in a packet or 0 (zero) for the\n\
13554 default packet size. The actual limit is further reduced\n\
13555 dependent on the target. Specify ``fixed'' to disable the\n\
13556 further restriction and ``limit'' to enable that restriction."),
13557 &remote_set_cmdlist
);
13558 add_cmd ("memory-read-packet-size", no_class
,
13559 set_memory_read_packet_size
, _("\
13560 Set the maximum number of bytes per memory-read packet.\n\
13561 Specify the number of bytes in a packet or 0 (zero) for the\n\
13562 default packet size. The actual limit is further reduced\n\
13563 dependent on the target. Specify ``fixed'' to disable the\n\
13564 further restriction and ``limit'' to enable that restriction."),
13565 &remote_set_cmdlist
);
13566 add_cmd ("memory-write-packet-size", no_class
,
13567 show_memory_write_packet_size
,
13568 _("Show the maximum number of bytes per memory-write packet."),
13569 &remote_show_cmdlist
);
13570 add_cmd ("memory-read-packet-size", no_class
,
13571 show_memory_read_packet_size
,
13572 _("Show the maximum number of bytes per memory-read packet."),
13573 &remote_show_cmdlist
);
13575 add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class
,
13576 &remote_hw_watchpoint_limit
, _("\
13577 Set the maximum number of target hardware watchpoints."), _("\
13578 Show the maximum number of target hardware watchpoints."), _("\
13579 Specify a negative limit for unlimited."),
13580 NULL
, NULL
, /* FIXME: i18n: The maximum
13581 number of target hardware
13582 watchpoints is %s. */
13583 &remote_set_cmdlist
, &remote_show_cmdlist
);
13584 add_setshow_zinteger_cmd ("hardware-watchpoint-length-limit", no_class
,
13585 &remote_hw_watchpoint_length_limit
, _("\
13586 Set the maximum length (in bytes) of a target hardware watchpoint."), _("\
13587 Show the maximum length (in bytes) of a target hardware watchpoint."), _("\
13588 Specify a negative limit for unlimited."),
13589 NULL
, NULL
, /* FIXME: i18n: The maximum
13590 length (in bytes) of a target
13591 hardware watchpoint is %s. */
13592 &remote_set_cmdlist
, &remote_show_cmdlist
);
13593 add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class
,
13594 &remote_hw_breakpoint_limit
, _("\
13595 Set the maximum number of target hardware breakpoints."), _("\
13596 Show the maximum number of target hardware breakpoints."), _("\
13597 Specify a negative limit for unlimited."),
13598 NULL
, NULL
, /* FIXME: i18n: The maximum
13599 number of target hardware
13600 breakpoints is %s. */
13601 &remote_set_cmdlist
, &remote_show_cmdlist
);
13603 add_setshow_zuinteger_cmd ("remoteaddresssize", class_obscure
,
13604 &remote_address_size
, _("\
13605 Set the maximum size of the address (in bits) in a memory packet."), _("\
13606 Show the maximum size of the address (in bits) in a memory packet."), NULL
,
13608 NULL
, /* FIXME: i18n: */
13609 &setlist
, &showlist
);
13611 init_all_packet_configs ();
13613 add_packet_config_cmd (&remote_protocol_packets
[PACKET_X
],
13614 "X", "binary-download", 1);
13616 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vCont
],
13617 "vCont", "verbose-resume", 0);
13619 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QPassSignals
],
13620 "QPassSignals", "pass-signals", 0);
13622 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QCatchSyscalls
],
13623 "QCatchSyscalls", "catch-syscalls", 0);
13625 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QProgramSignals
],
13626 "QProgramSignals", "program-signals", 0);
13628 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSymbol
],
13629 "qSymbol", "symbol-lookup", 0);
13631 add_packet_config_cmd (&remote_protocol_packets
[PACKET_P
],
13632 "P", "set-register", 1);
13634 add_packet_config_cmd (&remote_protocol_packets
[PACKET_p
],
13635 "p", "fetch-register", 1);
13637 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z0
],
13638 "Z0", "software-breakpoint", 0);
13640 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z1
],
13641 "Z1", "hardware-breakpoint", 0);
13643 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z2
],
13644 "Z2", "write-watchpoint", 0);
13646 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z3
],
13647 "Z3", "read-watchpoint", 0);
13649 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z4
],
13650 "Z4", "access-watchpoint", 0);
13652 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_auxv
],
13653 "qXfer:auxv:read", "read-aux-vector", 0);
13655 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_exec_file
],
13656 "qXfer:exec-file:read", "pid-to-exec-file", 0);
13658 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_features
],
13659 "qXfer:features:read", "target-features", 0);
13661 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_libraries
],
13662 "qXfer:libraries:read", "library-info", 0);
13664 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_libraries_svr4
],
13665 "qXfer:libraries-svr4:read", "library-info-svr4", 0);
13667 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_memory_map
],
13668 "qXfer:memory-map:read", "memory-map", 0);
13670 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_spu_read
],
13671 "qXfer:spu:read", "read-spu-object", 0);
13673 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_spu_write
],
13674 "qXfer:spu:write", "write-spu-object", 0);
13676 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_osdata
],
13677 "qXfer:osdata:read", "osdata", 0);
13679 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_threads
],
13680 "qXfer:threads:read", "threads", 0);
13682 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_siginfo_read
],
13683 "qXfer:siginfo:read", "read-siginfo-object", 0);
13685 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_siginfo_write
],
13686 "qXfer:siginfo:write", "write-siginfo-object", 0);
13688 add_packet_config_cmd
13689 (&remote_protocol_packets
[PACKET_qXfer_traceframe_info
],
13690 "qXfer:traceframe-info:read", "traceframe-info", 0);
13692 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_uib
],
13693 "qXfer:uib:read", "unwind-info-block", 0);
13695 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qGetTLSAddr
],
13696 "qGetTLSAddr", "get-thread-local-storage-address",
13699 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qGetTIBAddr
],
13700 "qGetTIBAddr", "get-thread-information-block-address",
13703 add_packet_config_cmd (&remote_protocol_packets
[PACKET_bc
],
13704 "bc", "reverse-continue", 0);
13706 add_packet_config_cmd (&remote_protocol_packets
[PACKET_bs
],
13707 "bs", "reverse-step", 0);
13709 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSupported
],
13710 "qSupported", "supported-packets", 0);
13712 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSearch_memory
],
13713 "qSearch:memory", "search-memory", 0);
13715 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qTStatus
],
13716 "qTStatus", "trace-status", 0);
13718 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_setfs
],
13719 "vFile:setfs", "hostio-setfs", 0);
13721 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_open
],
13722 "vFile:open", "hostio-open", 0);
13724 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_pread
],
13725 "vFile:pread", "hostio-pread", 0);
13727 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_pwrite
],
13728 "vFile:pwrite", "hostio-pwrite", 0);
13730 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_close
],
13731 "vFile:close", "hostio-close", 0);
13733 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_unlink
],
13734 "vFile:unlink", "hostio-unlink", 0);
13736 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_readlink
],
13737 "vFile:readlink", "hostio-readlink", 0);
13739 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_fstat
],
13740 "vFile:fstat", "hostio-fstat", 0);
13742 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vAttach
],
13743 "vAttach", "attach", 0);
13745 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vRun
],
13748 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QStartNoAckMode
],
13749 "QStartNoAckMode", "noack", 0);
13751 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vKill
],
13752 "vKill", "kill", 0);
13754 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qAttached
],
13755 "qAttached", "query-attached", 0);
13757 add_packet_config_cmd (&remote_protocol_packets
[PACKET_ConditionalTracepoints
],
13758 "ConditionalTracepoints",
13759 "conditional-tracepoints", 0);
13761 add_packet_config_cmd (&remote_protocol_packets
[PACKET_ConditionalBreakpoints
],
13762 "ConditionalBreakpoints",
13763 "conditional-breakpoints", 0);
13765 add_packet_config_cmd (&remote_protocol_packets
[PACKET_BreakpointCommands
],
13766 "BreakpointCommands",
13767 "breakpoint-commands", 0);
13769 add_packet_config_cmd (&remote_protocol_packets
[PACKET_FastTracepoints
],
13770 "FastTracepoints", "fast-tracepoints", 0);
13772 add_packet_config_cmd (&remote_protocol_packets
[PACKET_TracepointSource
],
13773 "TracepointSource", "TracepointSource", 0);
13775 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QAllow
],
13776 "QAllow", "allow", 0);
13778 add_packet_config_cmd (&remote_protocol_packets
[PACKET_StaticTracepoints
],
13779 "StaticTracepoints", "static-tracepoints", 0);
13781 add_packet_config_cmd (&remote_protocol_packets
[PACKET_InstallInTrace
],
13782 "InstallInTrace", "install-in-trace", 0);
13784 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_statictrace_read
],
13785 "qXfer:statictrace:read", "read-sdata-object", 0);
13787 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_fdpic
],
13788 "qXfer:fdpic:read", "read-fdpic-loadmap", 0);
13790 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QDisableRandomization
],
13791 "QDisableRandomization", "disable-randomization", 0);
13793 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QAgent
],
13794 "QAgent", "agent", 0);
13796 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QTBuffer_size
],
13797 "QTBuffer:size", "trace-buffer-size", 0);
13799 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Qbtrace_off
],
13800 "Qbtrace:off", "disable-btrace", 0);
13802 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Qbtrace_bts
],
13803 "Qbtrace:bts", "enable-btrace-bts", 0);
13805 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Qbtrace_pt
],
13806 "Qbtrace:pt", "enable-btrace-pt", 0);
13808 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_btrace
],
13809 "qXfer:btrace", "read-btrace", 0);
13811 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_btrace_conf
],
13812 "qXfer:btrace-conf", "read-btrace-conf", 0);
13814 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Qbtrace_conf_bts_size
],
13815 "Qbtrace-conf:bts:size", "btrace-conf-bts-size", 0);
13817 add_packet_config_cmd (&remote_protocol_packets
[PACKET_multiprocess_feature
],
13818 "multiprocess-feature", "multiprocess-feature", 0);
13820 add_packet_config_cmd (&remote_protocol_packets
[PACKET_swbreak_feature
],
13821 "swbreak-feature", "swbreak-feature", 0);
13823 add_packet_config_cmd (&remote_protocol_packets
[PACKET_hwbreak_feature
],
13824 "hwbreak-feature", "hwbreak-feature", 0);
13826 add_packet_config_cmd (&remote_protocol_packets
[PACKET_fork_event_feature
],
13827 "fork-event-feature", "fork-event-feature", 0);
13829 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vfork_event_feature
],
13830 "vfork-event-feature", "vfork-event-feature", 0);
13832 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Qbtrace_conf_pt_size
],
13833 "Qbtrace-conf:pt:size", "btrace-conf-pt-size", 0);
13835 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vContSupported
],
13836 "vContSupported", "verbose-resume-supported", 0);
13838 add_packet_config_cmd (&remote_protocol_packets
[PACKET_exec_event_feature
],
13839 "exec-event-feature", "exec-event-feature", 0);
13841 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vCtrlC
],
13842 "vCtrlC", "ctrl-c", 0);
13844 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QThreadEvents
],
13845 "QThreadEvents", "thread-events", 0);
13847 add_packet_config_cmd (&remote_protocol_packets
[PACKET_no_resumed
],
13848 "N stop reply", "no-resumed-stop-reply", 0);
13850 /* Assert that we've registered "set remote foo-packet" commands
13851 for all packet configs. */
13855 for (i
= 0; i
< PACKET_MAX
; i
++)
13857 /* Ideally all configs would have a command associated. Some
13858 still don't though. */
13863 case PACKET_QNonStop
:
13864 case PACKET_EnableDisableTracepoints_feature
:
13865 case PACKET_tracenz_feature
:
13866 case PACKET_DisconnectedTracing_feature
:
13867 case PACKET_augmented_libraries_svr4_read_feature
:
13869 /* Additions to this list need to be well justified:
13870 pre-existing packets are OK; new packets are not. */
13878 /* This catches both forgetting to add a config command, and
13879 forgetting to remove a packet from the exception list. */
13880 gdb_assert (excepted
== (remote_protocol_packets
[i
].name
== NULL
));
13884 /* Keep the old ``set remote Z-packet ...'' working. Each individual
13885 Z sub-packet has its own set and show commands, but users may
13886 have sets to this variable in their .gdbinit files (or in their
13888 add_setshow_auto_boolean_cmd ("Z-packet", class_obscure
,
13889 &remote_Z_packet_detect
, _("\
13890 Set use of remote protocol `Z' packets"), _("\
13891 Show use of remote protocol `Z' packets "), _("\
13892 When set, GDB will attempt to use the remote breakpoint and watchpoint\n\
13894 set_remote_protocol_Z_packet_cmd
,
13895 show_remote_protocol_Z_packet_cmd
,
13896 /* FIXME: i18n: Use of remote protocol
13897 `Z' packets is %s. */
13898 &remote_set_cmdlist
, &remote_show_cmdlist
);
13900 add_prefix_cmd ("remote", class_files
, remote_command
, _("\
13901 Manipulate files on the remote system\n\
13902 Transfer files to and from the remote target system."),
13903 &remote_cmdlist
, "remote ",
13904 0 /* allow-unknown */, &cmdlist
);
13906 add_cmd ("put", class_files
, remote_put_command
,
13907 _("Copy a local file to the remote system."),
13910 add_cmd ("get", class_files
, remote_get_command
,
13911 _("Copy a remote file to the local system."),
13914 add_cmd ("delete", class_files
, remote_delete_command
,
13915 _("Delete a remote file."),
13918 add_setshow_string_noescape_cmd ("exec-file", class_files
,
13919 &remote_exec_file_var
, _("\
13920 Set the remote pathname for \"run\""), _("\
13921 Show the remote pathname for \"run\""), NULL
,
13922 set_remote_exec_file
,
13923 show_remote_exec_file
,
13924 &remote_set_cmdlist
,
13925 &remote_show_cmdlist
);
13927 add_setshow_boolean_cmd ("range-stepping", class_run
,
13928 &use_range_stepping
, _("\
13929 Enable or disable range stepping."), _("\
13930 Show whether target-assisted range stepping is enabled."), _("\
13931 If on, and the target supports it, when stepping a source line, GDB\n\
13932 tells the target to step the corresponding range of addresses itself instead\n\
13933 of issuing multiple single-steps. This speeds up source level\n\
13934 stepping. If off, GDB always issues single-steps, even if range\n\
13935 stepping is supported by the target. The default is on."),
13936 set_range_stepping
,
13937 show_range_stepping
,
13941 /* Eventually initialize fileio. See fileio.c */
13942 initialize_remote_fileio (remote_set_cmdlist
, remote_show_cmdlist
);
13944 /* Take advantage of the fact that the TID field is not used, to tag
13945 special ptids with it set to != 0. */
13946 magic_null_ptid
= ptid_build (42000, -1, 1);
13947 not_sent_ptid
= ptid_build (42000, -2, 1);
13948 any_thread_ptid
= ptid_build (42000, 0, 1);
13950 target_buf_size
= 2048;
13951 target_buf
= (char *) xmalloc (target_buf_size
);