1 /* Remote target communications for serial-line targets in custom GDB protocol
3 Copyright (C) 1988-2014 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. */
29 #include "exceptions.h"
31 /*#include "terminal.h" */
34 #include "gdb-stabs.h"
35 #include "gdbthread.h"
37 #include "remote-notif.h"
40 #include "gdb_assert.h"
43 #include "cli/cli-decode.h"
44 #include "cli/cli-setshow.h"
45 #include "target-descriptions.h"
47 #include "filestuff.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 /* The size to align memory write packets, when practical. The protocol
79 does not guarantee any alignment, and gdb will generate short
80 writes and unaligned writes, but even as a best-effort attempt this
81 can improve bulk transfers. For instance, if a write is misaligned
82 relative to the target's data bus, the stub may need to make an extra
83 round trip fetching data from the target. This doesn't make a
84 huge difference, but it's easy to do, so we try to be helpful.
86 The alignment chosen is arbitrary; usually data bus width is
87 important here, not the possibly larger cache line size. */
88 enum { REMOTE_ALIGN_WRITES
= 16 };
90 /* Prototypes for local functions. */
91 static void async_cleanup_sigint_signal_handler (void *dummy
);
92 static int getpkt_sane (char **buf
, long *sizeof_buf
, int forever
);
93 static int getpkt_or_notif_sane (char **buf
, long *sizeof_buf
,
94 int forever
, int *is_notif
);
96 static void async_handle_remote_sigint (int);
97 static void async_handle_remote_sigint_twice (int);
99 static void remote_files_info (struct target_ops
*ignore
);
101 static void remote_prepare_to_store (struct target_ops
*self
,
102 struct regcache
*regcache
);
104 static void remote_open (char *name
, int from_tty
);
106 static void extended_remote_open (char *name
, int from_tty
);
108 static void remote_open_1 (char *, int, struct target_ops
*, int extended_p
);
110 static void remote_close (struct target_ops
*self
);
112 static void remote_mourn (struct target_ops
*ops
);
114 static void extended_remote_restart (void);
116 static void extended_remote_mourn (struct target_ops
*);
118 static void remote_mourn_1 (struct target_ops
*);
120 static void remote_send (char **buf
, long *sizeof_buf_p
);
122 static int readchar (int timeout
);
124 static void remote_serial_write (const char *str
, int len
);
126 static void remote_kill (struct target_ops
*ops
);
128 static int remote_can_async_p (struct target_ops
*);
130 static int remote_is_async_p (struct target_ops
*);
132 static void remote_async (struct target_ops
*ops
,
133 void (*callback
) (enum inferior_event_type event_type
,
137 static void sync_remote_interrupt_twice (int signo
);
139 static void interrupt_query (void);
141 static void set_general_thread (struct ptid ptid
);
142 static void set_continue_thread (struct ptid ptid
);
144 static void get_offsets (void);
146 static void skip_frame (void);
148 static long read_frame (char **buf_p
, long *sizeof_buf
);
150 static int hexnumlen (ULONGEST num
);
152 static void init_remote_ops (void);
154 static void init_extended_remote_ops (void);
156 static void remote_stop (struct target_ops
*self
, ptid_t
);
158 static int stubhex (int ch
);
160 static int hexnumstr (char *, ULONGEST
);
162 static int hexnumnstr (char *, ULONGEST
, int);
164 static CORE_ADDR
remote_address_masked (CORE_ADDR
);
166 static void print_packet (char *);
168 static void compare_sections_command (char *, int);
170 static void packet_command (char *, int);
172 static int stub_unpack_int (char *buff
, int fieldlength
);
174 static ptid_t
remote_current_thread (ptid_t oldptid
);
176 static void remote_find_new_threads (void);
178 static int putpkt_binary (char *buf
, int cnt
);
180 static void check_binary_download (CORE_ADDR addr
);
182 struct packet_config
;
184 static void show_packet_config_cmd (struct packet_config
*config
);
186 static void update_packet_config (struct packet_config
*config
);
188 static void set_remote_protocol_packet_cmd (char *args
, int from_tty
,
189 struct cmd_list_element
*c
);
191 static void show_remote_protocol_packet_cmd (struct ui_file
*file
,
193 struct cmd_list_element
*c
,
196 static char *write_ptid (char *buf
, const char *endbuf
, ptid_t ptid
);
197 static ptid_t
read_ptid (char *buf
, char **obuf
);
199 static void remote_set_permissions (struct target_ops
*self
);
202 static int remote_get_trace_status (struct target_ops
*self
,
203 struct trace_status
*ts
);
205 static int remote_upload_tracepoints (struct target_ops
*self
,
206 struct uploaded_tp
**utpp
);
208 static int remote_upload_trace_state_variables (struct target_ops
*self
,
209 struct uploaded_tsv
**utsvp
);
211 static void remote_query_supported (void);
213 static void remote_check_symbols (void);
215 void _initialize_remote (void);
218 static void stop_reply_xfree (struct stop_reply
*);
219 static void remote_parse_stop_reply (char *, struct stop_reply
*);
220 static void push_stop_reply (struct stop_reply
*);
221 static void discard_pending_stop_replies_in_queue (struct remote_state
*);
222 static int peek_stop_reply (ptid_t ptid
);
224 static void remote_async_inferior_event_handler (gdb_client_data
);
226 static void remote_terminal_ours (struct target_ops
*self
);
228 static int remote_read_description_p (struct target_ops
*target
);
230 static void remote_console_output (char *msg
);
232 static int remote_supports_cond_breakpoints (struct target_ops
*self
);
234 static int remote_can_run_breakpoint_commands (struct target_ops
*self
);
238 static struct cmd_list_element
*remote_cmdlist
;
240 /* For "set remote" and "show remote". */
242 static struct cmd_list_element
*remote_set_cmdlist
;
243 static struct cmd_list_element
*remote_show_cmdlist
;
245 /* Stub vCont actions support.
247 Each field is a boolean flag indicating whether the stub reports
248 support for the corresponding action. */
250 struct vCont_action_support
259 /* Controls whether GDB is willing to use range stepping. */
261 static int use_range_stepping
= 1;
263 #define OPAQUETHREADBYTES 8
265 /* a 64 bit opaque identifier */
266 typedef unsigned char threadref
[OPAQUETHREADBYTES
];
268 /* About this many threadisds fit in a packet. */
270 #define MAXTHREADLISTRESULTS 32
272 /* Description of the remote protocol state for the currently
273 connected target. This is per-target state, and independent of the
274 selected architecture. */
278 /* A buffer to use for incoming packets, and its current size. The
279 buffer is grown dynamically for larger incoming packets.
280 Outgoing packets may also be constructed in this buffer.
281 BUF_SIZE is always at least REMOTE_PACKET_SIZE;
282 REMOTE_PACKET_SIZE should be used to limit the length of outgoing
287 /* True if we're going through initial connection setup (finding out
288 about the remote side's threads, relocating symbols, etc.). */
291 /* If we negotiated packet size explicitly (and thus can bypass
292 heuristics for the largest packet size that will not overflow
293 a buffer in the stub), this will be set to that packet size.
294 Otherwise zero, meaning to use the guessed size. */
295 long explicit_packet_size
;
297 /* remote_wait is normally called when the target is running and
298 waits for a stop reply packet. But sometimes we need to call it
299 when the target is already stopped. We can send a "?" packet
300 and have remote_wait read the response. Or, if we already have
301 the response, we can stash it in BUF and tell remote_wait to
302 skip calling getpkt. This flag is set when BUF contains a
303 stop reply packet and the target is not waiting. */
304 int cached_wait_status
;
306 /* True, if in no ack mode. That is, neither GDB nor the stub will
307 expect acks from each other. The connection is assumed to be
311 /* True if we're connected in extended remote mode. */
314 /* True if the stub reported support for multi-process
316 int multi_process_aware
;
318 /* True if we resumed the target and we're waiting for the target to
319 stop. In the mean time, we can't start another command/query.
320 The remote server wouldn't be ready to process it, so we'd
321 timeout waiting for a reply that would never come and eventually
322 we'd close the connection. This can happen in asynchronous mode
323 because we allow GDB commands while the target is running. */
324 int waiting_for_stop_reply
;
326 /* True if the stub reports support for non-stop mode. */
329 /* The status of the stub support for the various vCont actions. */
330 struct vCont_action_support supports_vCont
;
332 /* True if the stub reports support for conditional tracepoints. */
333 int cond_tracepoints
;
335 /* True if the stub reports support for target-side breakpoint
337 int cond_breakpoints
;
339 /* True if the stub reports support for target-side breakpoint
341 int breakpoint_commands
;
343 /* True if the stub reports support for fast tracepoints. */
344 int fast_tracepoints
;
346 /* True if the stub reports support for static tracepoints. */
347 int static_tracepoints
;
349 /* True if the stub reports support for installing tracepoint while
351 int install_in_trace
;
353 /* True if the stub can continue running a trace while GDB is
355 int disconnected_tracing
;
357 /* True if the stub reports support for enabling and disabling
358 tracepoints while a trace experiment is running. */
359 int enable_disable_tracepoints
;
361 /* True if the stub can collect strings using tracenz bytecode. */
364 /* True if the stub supports qXfer:libraries-svr4:read with a
366 int augmented_libraries_svr4_read
;
368 /* Nonzero if the user has pressed Ctrl-C, but the target hasn't
369 responded to that. */
372 /* Descriptor for I/O to remote machine. Initialize it to NULL so that
373 remote_open knows that we don't have a file open when the program
375 struct serial
*remote_desc
;
377 /* These are the threads which we last sent to the remote system. The
378 TID member will be -1 for all or -2 for not sent yet. */
379 ptid_t general_thread
;
380 ptid_t continue_thread
;
382 /* This is the traceframe which we last selected on the remote system.
383 It will be -1 if no traceframe is selected. */
384 int remote_traceframe_number
;
386 char *last_pass_packet
;
388 /* The last QProgramSignals packet sent to the target. We bypass
389 sending a new program signals list down to the target if the new
390 packet is exactly the same as the last we sent. IOW, we only let
391 the target know about program signals list changes. */
392 char *last_program_signals_packet
;
394 enum gdb_signal last_sent_signal
;
398 char *finished_object
;
399 char *finished_annex
;
400 ULONGEST finished_offset
;
402 /* Should we try the 'ThreadInfo' query packet?
404 This variable (NOT available to the user: auto-detect only!)
405 determines whether GDB will use the new, simpler "ThreadInfo"
406 query or the older, more complex syntax for thread queries.
407 This is an auto-detect variable (set to true at each connect,
408 and set to false when the target fails to recognize it). */
409 int use_threadinfo_query
;
410 int use_threadextra_query
;
412 void (*async_client_callback
) (enum inferior_event_type event_type
,
414 void *async_client_context
;
416 /* This is set to the data address of the access causing the target
417 to stop for a watchpoint. */
418 CORE_ADDR remote_watch_data_address
;
420 /* This is non-zero if target stopped for a watchpoint. */
421 int remote_stopped_by_watchpoint_p
;
423 threadref echo_nextthread
;
424 threadref nextthread
;
425 threadref resultthreadlist
[MAXTHREADLISTRESULTS
];
427 /* The state of remote notification. */
428 struct remote_notif_state
*notif_state
;
431 /* Private data that we'll store in (struct thread_info)->private. */
432 struct private_thread_info
439 free_private_thread_info (struct private_thread_info
*info
)
445 /* Returns true if the multi-process extensions are in effect. */
447 remote_multi_process_p (struct remote_state
*rs
)
449 return rs
->multi_process_aware
;
452 /* This data could be associated with a target, but we do not always
453 have access to the current target when we need it, so for now it is
454 static. This will be fine for as long as only one target is in use
456 static struct remote_state
*remote_state
;
458 static struct remote_state
*
459 get_remote_state_raw (void)
464 /* Allocate a new struct remote_state with xmalloc, initialize it, and
467 static struct remote_state
*
468 new_remote_state (void)
470 struct remote_state
*result
= XCNEW (struct remote_state
);
472 /* The default buffer size is unimportant; it will be expanded
473 whenever a larger buffer is needed. */
474 result
->buf_size
= 400;
475 result
->buf
= xmalloc (result
->buf_size
);
476 result
->remote_traceframe_number
= -1;
477 result
->last_sent_signal
= GDB_SIGNAL_0
;
482 /* Description of the remote protocol for a given architecture. */
486 long offset
; /* Offset into G packet. */
487 long regnum
; /* GDB's internal register number. */
488 LONGEST pnum
; /* Remote protocol register number. */
489 int in_g_packet
; /* Always part of G packet. */
490 /* long size in bytes; == register_size (target_gdbarch (), regnum);
492 /* char *name; == gdbarch_register_name (target_gdbarch (), regnum);
496 struct remote_arch_state
498 /* Description of the remote protocol registers. */
499 long sizeof_g_packet
;
501 /* Description of the remote protocol registers indexed by REGNUM
502 (making an array gdbarch_num_regs in size). */
503 struct packet_reg
*regs
;
505 /* This is the size (in chars) of the first response to the ``g''
506 packet. It is used as a heuristic when determining the maximum
507 size of memory-read and memory-write packets. A target will
508 typically only reserve a buffer large enough to hold the ``g''
509 packet. The size does not include packet overhead (headers and
511 long actual_register_packet_size
;
513 /* This is the maximum size (in chars) of a non read/write packet.
514 It is also used as a cap on the size of read/write packets. */
515 long remote_packet_size
;
518 /* Utility: generate error from an incoming stub packet. */
520 trace_error (char *buf
)
523 return; /* not an error msg */
526 case '1': /* malformed packet error */
527 if (*++buf
== '0') /* general case: */
528 error (_("remote.c: error in outgoing packet."));
530 error (_("remote.c: error in outgoing packet at field #%ld."),
531 strtol (buf
, NULL
, 16));
533 error (_("Target returns error code '%s'."), buf
);
537 /* Utility: wait for reply from stub, while accepting "O" packets. */
539 remote_get_noisy_reply (char **buf_p
,
542 do /* Loop on reply from remote stub. */
546 QUIT
; /* Allow user to bail out with ^C. */
547 getpkt (buf_p
, sizeof_buf
, 0);
551 else if (strncmp (buf
, "qRelocInsn:", strlen ("qRelocInsn:")) == 0)
554 CORE_ADDR from
, to
, org_to
;
556 int adjusted_size
= 0;
557 volatile struct gdb_exception ex
;
559 p
= buf
+ strlen ("qRelocInsn:");
560 pp
= unpack_varlen_hex (p
, &ul
);
562 error (_("invalid qRelocInsn packet: %s"), buf
);
566 unpack_varlen_hex (p
, &ul
);
571 TRY_CATCH (ex
, RETURN_MASK_ALL
)
573 gdbarch_relocate_instruction (target_gdbarch (), &to
, from
);
577 adjusted_size
= to
- org_to
;
579 xsnprintf (buf
, *sizeof_buf
, "qRelocInsn:%x", adjusted_size
);
582 else if (ex
.reason
< 0 && ex
.error
== MEMORY_ERROR
)
584 /* Propagate memory errors silently back to the target.
585 The stub may have limited the range of addresses we
586 can write to, for example. */
591 /* Something unexpectedly bad happened. Be verbose so
592 we can tell what, and propagate the error back to the
593 stub, so it doesn't get stuck waiting for a
595 exception_fprintf (gdb_stderr
, ex
,
596 _("warning: relocating instruction: "));
600 else if (buf
[0] == 'O' && buf
[1] != 'K')
601 remote_console_output (buf
+ 1); /* 'O' message from stub */
603 return buf
; /* Here's the actual reply. */
608 /* Handle for retreving the remote protocol data from gdbarch. */
609 static struct gdbarch_data
*remote_gdbarch_data_handle
;
611 static struct remote_arch_state
*
612 get_remote_arch_state (void)
614 return gdbarch_data (target_gdbarch (), remote_gdbarch_data_handle
);
617 /* Fetch the global remote target state. */
619 static struct remote_state
*
620 get_remote_state (void)
622 /* Make sure that the remote architecture state has been
623 initialized, because doing so might reallocate rs->buf. Any
624 function which calls getpkt also needs to be mindful of changes
625 to rs->buf, but this call limits the number of places which run
627 get_remote_arch_state ();
629 return get_remote_state_raw ();
633 compare_pnums (const void *lhs_
, const void *rhs_
)
635 const struct packet_reg
* const *lhs
= lhs_
;
636 const struct packet_reg
* const *rhs
= rhs_
;
638 if ((*lhs
)->pnum
< (*rhs
)->pnum
)
640 else if ((*lhs
)->pnum
== (*rhs
)->pnum
)
647 map_regcache_remote_table (struct gdbarch
*gdbarch
, struct packet_reg
*regs
)
649 int regnum
, num_remote_regs
, offset
;
650 struct packet_reg
**remote_regs
;
652 for (regnum
= 0; regnum
< gdbarch_num_regs (gdbarch
); regnum
++)
654 struct packet_reg
*r
= ®s
[regnum
];
656 if (register_size (gdbarch
, regnum
) == 0)
657 /* Do not try to fetch zero-sized (placeholder) registers. */
660 r
->pnum
= gdbarch_remote_register_number (gdbarch
, regnum
);
665 /* Define the g/G packet format as the contents of each register
666 with a remote protocol number, in order of ascending protocol
669 remote_regs
= alloca (gdbarch_num_regs (gdbarch
)
670 * sizeof (struct packet_reg
*));
671 for (num_remote_regs
= 0, regnum
= 0;
672 regnum
< gdbarch_num_regs (gdbarch
);
674 if (regs
[regnum
].pnum
!= -1)
675 remote_regs
[num_remote_regs
++] = ®s
[regnum
];
677 qsort (remote_regs
, num_remote_regs
, sizeof (struct packet_reg
*),
680 for (regnum
= 0, offset
= 0; regnum
< num_remote_regs
; regnum
++)
682 remote_regs
[regnum
]->in_g_packet
= 1;
683 remote_regs
[regnum
]->offset
= offset
;
684 offset
+= register_size (gdbarch
, remote_regs
[regnum
]->regnum
);
690 /* Given the architecture described by GDBARCH, return the remote
691 protocol register's number and the register's offset in the g/G
692 packets of GDB register REGNUM, in PNUM and POFFSET respectively.
693 If the target does not have a mapping for REGNUM, return false,
694 otherwise, return true. */
697 remote_register_number_and_offset (struct gdbarch
*gdbarch
, int regnum
,
698 int *pnum
, int *poffset
)
701 struct packet_reg
*regs
;
702 struct cleanup
*old_chain
;
704 gdb_assert (regnum
< gdbarch_num_regs (gdbarch
));
706 regs
= xcalloc (gdbarch_num_regs (gdbarch
), sizeof (struct packet_reg
));
707 old_chain
= make_cleanup (xfree
, regs
);
709 sizeof_g_packet
= map_regcache_remote_table (gdbarch
, regs
);
711 *pnum
= regs
[regnum
].pnum
;
712 *poffset
= regs
[regnum
].offset
;
714 do_cleanups (old_chain
);
720 init_remote_state (struct gdbarch
*gdbarch
)
722 struct remote_state
*rs
= get_remote_state_raw ();
723 struct remote_arch_state
*rsa
;
725 rsa
= GDBARCH_OBSTACK_ZALLOC (gdbarch
, struct remote_arch_state
);
727 /* Use the architecture to build a regnum<->pnum table, which will be
728 1:1 unless a feature set specifies otherwise. */
729 rsa
->regs
= GDBARCH_OBSTACK_CALLOC (gdbarch
,
730 gdbarch_num_regs (gdbarch
),
733 /* Record the maximum possible size of the g packet - it may turn out
735 rsa
->sizeof_g_packet
= map_regcache_remote_table (gdbarch
, rsa
->regs
);
737 /* Default maximum number of characters in a packet body. Many
738 remote stubs have a hardwired buffer size of 400 bytes
739 (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used
740 as the maximum packet-size to ensure that the packet and an extra
741 NUL character can always fit in the buffer. This stops GDB
742 trashing stubs that try to squeeze an extra NUL into what is
743 already a full buffer (As of 1999-12-04 that was most stubs). */
744 rsa
->remote_packet_size
= 400 - 1;
746 /* This one is filled in when a ``g'' packet is received. */
747 rsa
->actual_register_packet_size
= 0;
749 /* Should rsa->sizeof_g_packet needs more space than the
750 default, adjust the size accordingly. Remember that each byte is
751 encoded as two characters. 32 is the overhead for the packet
752 header / footer. NOTE: cagney/1999-10-26: I suspect that 8
753 (``$NN:G...#NN'') is a better guess, the below has been padded a
755 if (rsa
->sizeof_g_packet
> ((rsa
->remote_packet_size
- 32) / 2))
756 rsa
->remote_packet_size
= (rsa
->sizeof_g_packet
* 2 + 32);
758 /* Make sure that the packet buffer is plenty big enough for
759 this architecture. */
760 if (rs
->buf_size
< rsa
->remote_packet_size
)
762 rs
->buf_size
= 2 * rsa
->remote_packet_size
;
763 rs
->buf
= xrealloc (rs
->buf
, rs
->buf_size
);
769 /* Return the current allowed size of a remote packet. This is
770 inferred from the current architecture, and should be used to
771 limit the length of outgoing packets. */
773 get_remote_packet_size (void)
775 struct remote_state
*rs
= get_remote_state ();
776 struct remote_arch_state
*rsa
= get_remote_arch_state ();
778 if (rs
->explicit_packet_size
)
779 return rs
->explicit_packet_size
;
781 return rsa
->remote_packet_size
;
784 static struct packet_reg
*
785 packet_reg_from_regnum (struct remote_arch_state
*rsa
, long regnum
)
787 if (regnum
< 0 && regnum
>= gdbarch_num_regs (target_gdbarch ()))
791 struct packet_reg
*r
= &rsa
->regs
[regnum
];
793 gdb_assert (r
->regnum
== regnum
);
798 static struct packet_reg
*
799 packet_reg_from_pnum (struct remote_arch_state
*rsa
, LONGEST pnum
)
803 for (i
= 0; i
< gdbarch_num_regs (target_gdbarch ()); i
++)
805 struct packet_reg
*r
= &rsa
->regs
[i
];
813 static struct target_ops remote_ops
;
815 static struct target_ops extended_remote_ops
;
817 /* FIXME: cagney/1999-09-23: Even though getpkt was called with
818 ``forever'' still use the normal timeout mechanism. This is
819 currently used by the ASYNC code to guarentee that target reads
820 during the initial connect always time-out. Once getpkt has been
821 modified to return a timeout indication and, in turn
822 remote_wait()/wait_for_inferior() have gained a timeout parameter
824 static int wait_forever_enabled_p
= 1;
826 /* Allow the user to specify what sequence to send to the remote
827 when he requests a program interruption: Although ^C is usually
828 what remote systems expect (this is the default, here), it is
829 sometimes preferable to send a break. On other systems such
830 as the Linux kernel, a break followed by g, which is Magic SysRq g
831 is required in order to interrupt the execution. */
832 const char interrupt_sequence_control_c
[] = "Ctrl-C";
833 const char interrupt_sequence_break
[] = "BREAK";
834 const char interrupt_sequence_break_g
[] = "BREAK-g";
835 static const char *const interrupt_sequence_modes
[] =
837 interrupt_sequence_control_c
,
838 interrupt_sequence_break
,
839 interrupt_sequence_break_g
,
842 static const char *interrupt_sequence_mode
= interrupt_sequence_control_c
;
845 show_interrupt_sequence (struct ui_file
*file
, int from_tty
,
846 struct cmd_list_element
*c
,
849 if (interrupt_sequence_mode
== interrupt_sequence_control_c
)
850 fprintf_filtered (file
,
851 _("Send the ASCII ETX character (Ctrl-c) "
852 "to the remote target to interrupt the "
853 "execution of the program.\n"));
854 else if (interrupt_sequence_mode
== interrupt_sequence_break
)
855 fprintf_filtered (file
,
856 _("send a break signal to the remote target "
857 "to interrupt the execution of the program.\n"));
858 else if (interrupt_sequence_mode
== interrupt_sequence_break_g
)
859 fprintf_filtered (file
,
860 _("Send a break signal and 'g' a.k.a. Magic SysRq g to "
861 "the remote target to interrupt the execution "
862 "of Linux kernel.\n"));
864 internal_error (__FILE__
, __LINE__
,
865 _("Invalid value for interrupt_sequence_mode: %s."),
866 interrupt_sequence_mode
);
869 /* This boolean variable specifies whether interrupt_sequence is sent
870 to the remote target when gdb connects to it.
871 This is mostly needed when you debug the Linux kernel: The Linux kernel
872 expects BREAK g which is Magic SysRq g for connecting gdb. */
873 static int interrupt_on_connect
= 0;
875 /* This variable is used to implement the "set/show remotebreak" commands.
876 Since these commands are now deprecated in favor of "set/show remote
877 interrupt-sequence", it no longer has any effect on the code. */
878 static int remote_break
;
881 set_remotebreak (char *args
, int from_tty
, struct cmd_list_element
*c
)
884 interrupt_sequence_mode
= interrupt_sequence_break
;
886 interrupt_sequence_mode
= interrupt_sequence_control_c
;
890 show_remotebreak (struct ui_file
*file
, int from_tty
,
891 struct cmd_list_element
*c
,
896 /* This variable sets the number of bits in an address that are to be
897 sent in a memory ("M" or "m") packet. Normally, after stripping
898 leading zeros, the entire address would be sent. This variable
899 restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The
900 initial implementation of remote.c restricted the address sent in
901 memory packets to ``host::sizeof long'' bytes - (typically 32
902 bits). Consequently, for 64 bit targets, the upper 32 bits of an
903 address was never sent. Since fixing this bug may cause a break in
904 some remote targets this variable is principly provided to
905 facilitate backward compatibility. */
907 static unsigned int remote_address_size
;
909 /* Temporary to track who currently owns the terminal. See
910 remote_terminal_* for more details. */
912 static int remote_async_terminal_ours_p
;
914 /* The executable file to use for "run" on the remote side. */
916 static char *remote_exec_file
= "";
919 /* User configurable variables for the number of characters in a
920 memory read/write packet. MIN (rsa->remote_packet_size,
921 rsa->sizeof_g_packet) is the default. Some targets need smaller
922 values (fifo overruns, et.al.) and some users need larger values
923 (speed up transfers). The variables ``preferred_*'' (the user
924 request), ``current_*'' (what was actually set) and ``forced_*''
925 (Positive - a soft limit, negative - a hard limit). */
927 struct memory_packet_config
934 /* Compute the current size of a read/write packet. Since this makes
935 use of ``actual_register_packet_size'' the computation is dynamic. */
938 get_memory_packet_size (struct memory_packet_config
*config
)
940 struct remote_state
*rs
= get_remote_state ();
941 struct remote_arch_state
*rsa
= get_remote_arch_state ();
943 /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk
944 law?) that some hosts don't cope very well with large alloca()
945 calls. Eventually the alloca() code will be replaced by calls to
946 xmalloc() and make_cleanups() allowing this restriction to either
947 be lifted or removed. */
948 #ifndef MAX_REMOTE_PACKET_SIZE
949 #define MAX_REMOTE_PACKET_SIZE 16384
951 /* NOTE: 20 ensures we can write at least one byte. */
952 #ifndef MIN_REMOTE_PACKET_SIZE
953 #define MIN_REMOTE_PACKET_SIZE 20
958 if (config
->size
<= 0)
959 what_they_get
= MAX_REMOTE_PACKET_SIZE
;
961 what_they_get
= config
->size
;
965 what_they_get
= get_remote_packet_size ();
966 /* Limit the packet to the size specified by the user. */
968 && what_they_get
> config
->size
)
969 what_they_get
= config
->size
;
971 /* Limit it to the size of the targets ``g'' response unless we have
972 permission from the stub to use a larger packet size. */
973 if (rs
->explicit_packet_size
== 0
974 && rsa
->actual_register_packet_size
> 0
975 && what_they_get
> rsa
->actual_register_packet_size
)
976 what_they_get
= rsa
->actual_register_packet_size
;
978 if (what_they_get
> MAX_REMOTE_PACKET_SIZE
)
979 what_they_get
= MAX_REMOTE_PACKET_SIZE
;
980 if (what_they_get
< MIN_REMOTE_PACKET_SIZE
)
981 what_they_get
= MIN_REMOTE_PACKET_SIZE
;
983 /* Make sure there is room in the global buffer for this packet
984 (including its trailing NUL byte). */
985 if (rs
->buf_size
< what_they_get
+ 1)
987 rs
->buf_size
= 2 * what_they_get
;
988 rs
->buf
= xrealloc (rs
->buf
, 2 * what_they_get
);
991 return what_they_get
;
994 /* Update the size of a read/write packet. If they user wants
995 something really big then do a sanity check. */
998 set_memory_packet_size (char *args
, struct memory_packet_config
*config
)
1000 int fixed_p
= config
->fixed_p
;
1001 long size
= config
->size
;
1004 error (_("Argument required (integer, `fixed' or `limited')."));
1005 else if (strcmp (args
, "hard") == 0
1006 || strcmp (args
, "fixed") == 0)
1008 else if (strcmp (args
, "soft") == 0
1009 || strcmp (args
, "limit") == 0)
1015 size
= strtoul (args
, &end
, 0);
1017 error (_("Invalid %s (bad syntax)."), config
->name
);
1019 /* Instead of explicitly capping the size of a packet to
1020 MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is
1021 instead allowed to set the size to something arbitrarily
1023 if (size
> MAX_REMOTE_PACKET_SIZE
)
1024 error (_("Invalid %s (too large)."), config
->name
);
1028 if (fixed_p
&& !config
->fixed_p
)
1030 if (! query (_("The target may not be able to correctly handle a %s\n"
1031 "of %ld bytes. Change the packet size? "),
1032 config
->name
, size
))
1033 error (_("Packet size not changed."));
1035 /* Update the config. */
1036 config
->fixed_p
= fixed_p
;
1037 config
->size
= size
;
1041 show_memory_packet_size (struct memory_packet_config
*config
)
1043 printf_filtered (_("The %s is %ld. "), config
->name
, config
->size
);
1044 if (config
->fixed_p
)
1045 printf_filtered (_("Packets are fixed at %ld bytes.\n"),
1046 get_memory_packet_size (config
));
1048 printf_filtered (_("Packets are limited to %ld bytes.\n"),
1049 get_memory_packet_size (config
));
1052 static struct memory_packet_config memory_write_packet_config
=
1054 "memory-write-packet-size",
1058 set_memory_write_packet_size (char *args
, int from_tty
)
1060 set_memory_packet_size (args
, &memory_write_packet_config
);
1064 show_memory_write_packet_size (char *args
, int from_tty
)
1066 show_memory_packet_size (&memory_write_packet_config
);
1070 get_memory_write_packet_size (void)
1072 return get_memory_packet_size (&memory_write_packet_config
);
1075 static struct memory_packet_config memory_read_packet_config
=
1077 "memory-read-packet-size",
1081 set_memory_read_packet_size (char *args
, int from_tty
)
1083 set_memory_packet_size (args
, &memory_read_packet_config
);
1087 show_memory_read_packet_size (char *args
, int from_tty
)
1089 show_memory_packet_size (&memory_read_packet_config
);
1093 get_memory_read_packet_size (void)
1095 long size
= get_memory_packet_size (&memory_read_packet_config
);
1097 /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an
1098 extra buffer size argument before the memory read size can be
1099 increased beyond this. */
1100 if (size
> get_remote_packet_size ())
1101 size
= get_remote_packet_size ();
1106 /* Generic configuration support for packets the stub optionally
1107 supports. Allows the user to specify the use of the packet as well
1108 as allowing GDB to auto-detect support in the remote stub. */
1112 PACKET_SUPPORT_UNKNOWN
= 0,
1117 struct packet_config
1121 enum auto_boolean detect
;
1122 enum packet_support support
;
1125 /* Analyze a packet's return value and update the packet config
1136 update_packet_config (struct packet_config
*config
)
1138 switch (config
->detect
)
1140 case AUTO_BOOLEAN_TRUE
:
1141 config
->support
= PACKET_ENABLE
;
1143 case AUTO_BOOLEAN_FALSE
:
1144 config
->support
= PACKET_DISABLE
;
1146 case AUTO_BOOLEAN_AUTO
:
1147 config
->support
= PACKET_SUPPORT_UNKNOWN
;
1153 show_packet_config_cmd (struct packet_config
*config
)
1155 char *support
= "internal-error";
1157 switch (config
->support
)
1160 support
= "enabled";
1162 case PACKET_DISABLE
:
1163 support
= "disabled";
1165 case PACKET_SUPPORT_UNKNOWN
:
1166 support
= "unknown";
1169 switch (config
->detect
)
1171 case AUTO_BOOLEAN_AUTO
:
1172 printf_filtered (_("Support for the `%s' packet "
1173 "is auto-detected, currently %s.\n"),
1174 config
->name
, support
);
1176 case AUTO_BOOLEAN_TRUE
:
1177 case AUTO_BOOLEAN_FALSE
:
1178 printf_filtered (_("Support for the `%s' packet is currently %s.\n"),
1179 config
->name
, support
);
1185 add_packet_config_cmd (struct packet_config
*config
, const char *name
,
1186 const char *title
, int legacy
)
1192 config
->name
= name
;
1193 config
->title
= title
;
1194 config
->detect
= AUTO_BOOLEAN_AUTO
;
1195 config
->support
= PACKET_SUPPORT_UNKNOWN
;
1196 set_doc
= xstrprintf ("Set use of remote protocol `%s' (%s) packet",
1198 show_doc
= xstrprintf ("Show current use of remote "
1199 "protocol `%s' (%s) packet",
1201 /* set/show TITLE-packet {auto,on,off} */
1202 cmd_name
= xstrprintf ("%s-packet", title
);
1203 add_setshow_auto_boolean_cmd (cmd_name
, class_obscure
,
1204 &config
->detect
, set_doc
,
1205 show_doc
, NULL
, /* help_doc */
1206 set_remote_protocol_packet_cmd
,
1207 show_remote_protocol_packet_cmd
,
1208 &remote_set_cmdlist
, &remote_show_cmdlist
);
1209 /* The command code copies the documentation strings. */
1212 /* set/show remote NAME-packet {auto,on,off} -- legacy. */
1217 legacy_name
= xstrprintf ("%s-packet", name
);
1218 add_alias_cmd (legacy_name
, cmd_name
, class_obscure
, 0,
1219 &remote_set_cmdlist
);
1220 add_alias_cmd (legacy_name
, cmd_name
, class_obscure
, 0,
1221 &remote_show_cmdlist
);
1225 static enum packet_result
1226 packet_check_result (const char *buf
)
1230 /* The stub recognized the packet request. Check that the
1231 operation succeeded. */
1233 && isxdigit (buf
[1]) && isxdigit (buf
[2])
1235 /* "Enn" - definitly an error. */
1236 return PACKET_ERROR
;
1238 /* Always treat "E." as an error. This will be used for
1239 more verbose error messages, such as E.memtypes. */
1240 if (buf
[0] == 'E' && buf
[1] == '.')
1241 return PACKET_ERROR
;
1243 /* The packet may or may not be OK. Just assume it is. */
1247 /* The stub does not support the packet. */
1248 return PACKET_UNKNOWN
;
1251 static enum packet_result
1252 packet_ok (const char *buf
, struct packet_config
*config
)
1254 enum packet_result result
;
1256 result
= packet_check_result (buf
);
1261 /* The stub recognized the packet request. */
1262 switch (config
->support
)
1264 case PACKET_SUPPORT_UNKNOWN
:
1266 fprintf_unfiltered (gdb_stdlog
,
1267 "Packet %s (%s) is supported\n",
1268 config
->name
, config
->title
);
1269 config
->support
= PACKET_ENABLE
;
1271 case PACKET_DISABLE
:
1272 internal_error (__FILE__
, __LINE__
,
1273 _("packet_ok: attempt to use a disabled packet"));
1279 case PACKET_UNKNOWN
:
1280 /* The stub does not support the packet. */
1281 switch (config
->support
)
1284 if (config
->detect
== AUTO_BOOLEAN_AUTO
)
1285 /* If the stub previously indicated that the packet was
1286 supported then there is a protocol error.. */
1287 error (_("Protocol error: %s (%s) conflicting enabled responses."),
1288 config
->name
, config
->title
);
1290 /* The user set it wrong. */
1291 error (_("Enabled packet %s (%s) not recognized by stub"),
1292 config
->name
, config
->title
);
1294 case PACKET_SUPPORT_UNKNOWN
:
1296 fprintf_unfiltered (gdb_stdlog
,
1297 "Packet %s (%s) is NOT supported\n",
1298 config
->name
, config
->title
);
1299 config
->support
= PACKET_DISABLE
;
1301 case PACKET_DISABLE
:
1323 PACKET_vFile_pwrite
,
1325 PACKET_vFile_unlink
,
1326 PACKET_vFile_readlink
,
1328 PACKET_qXfer_features
,
1329 PACKET_qXfer_libraries
,
1330 PACKET_qXfer_libraries_svr4
,
1331 PACKET_qXfer_memory_map
,
1332 PACKET_qXfer_spu_read
,
1333 PACKET_qXfer_spu_write
,
1334 PACKET_qXfer_osdata
,
1335 PACKET_qXfer_threads
,
1336 PACKET_qXfer_statictrace_read
,
1337 PACKET_qXfer_traceframe_info
,
1343 PACKET_QPassSignals
,
1344 PACKET_QProgramSignals
,
1345 PACKET_qSearch_memory
,
1348 PACKET_QStartNoAckMode
,
1350 PACKET_qXfer_siginfo_read
,
1351 PACKET_qXfer_siginfo_write
,
1353 PACKET_ConditionalTracepoints
,
1354 PACKET_ConditionalBreakpoints
,
1355 PACKET_BreakpointCommands
,
1356 PACKET_FastTracepoints
,
1357 PACKET_StaticTracepoints
,
1358 PACKET_InstallInTrace
,
1361 PACKET_TracepointSource
,
1364 PACKET_QDisableRandomization
,
1366 PACKET_QTBuffer_size
,
1369 PACKET_qXfer_btrace
,
1373 static struct packet_config remote_protocol_packets
[PACKET_MAX
];
1376 set_remote_protocol_packet_cmd (char *args
, int from_tty
,
1377 struct cmd_list_element
*c
)
1379 struct packet_config
*packet
;
1381 for (packet
= remote_protocol_packets
;
1382 packet
< &remote_protocol_packets
[PACKET_MAX
];
1385 if (&packet
->detect
== c
->var
)
1387 update_packet_config (packet
);
1391 internal_error (__FILE__
, __LINE__
, _("Could not find config for %s"),
1396 show_remote_protocol_packet_cmd (struct ui_file
*file
, int from_tty
,
1397 struct cmd_list_element
*c
,
1400 struct packet_config
*packet
;
1402 for (packet
= remote_protocol_packets
;
1403 packet
< &remote_protocol_packets
[PACKET_MAX
];
1406 if (&packet
->detect
== c
->var
)
1408 show_packet_config_cmd (packet
);
1412 internal_error (__FILE__
, __LINE__
, _("Could not find config for %s"),
1416 /* Should we try one of the 'Z' requests? */
1420 Z_PACKET_SOFTWARE_BP
,
1421 Z_PACKET_HARDWARE_BP
,
1428 /* For compatibility with older distributions. Provide a ``set remote
1429 Z-packet ...'' command that updates all the Z packet types. */
1431 static enum auto_boolean remote_Z_packet_detect
;
1434 set_remote_protocol_Z_packet_cmd (char *args
, int from_tty
,
1435 struct cmd_list_element
*c
)
1439 for (i
= 0; i
< NR_Z_PACKET_TYPES
; i
++)
1441 remote_protocol_packets
[PACKET_Z0
+ i
].detect
= remote_Z_packet_detect
;
1442 update_packet_config (&remote_protocol_packets
[PACKET_Z0
+ i
]);
1447 show_remote_protocol_Z_packet_cmd (struct ui_file
*file
, int from_tty
,
1448 struct cmd_list_element
*c
,
1453 for (i
= 0; i
< NR_Z_PACKET_TYPES
; i
++)
1455 show_packet_config_cmd (&remote_protocol_packets
[PACKET_Z0
+ i
]);
1459 /* Tokens for use by the asynchronous signal handlers for SIGINT. */
1460 static struct async_signal_handler
*async_sigint_remote_twice_token
;
1461 static struct async_signal_handler
*async_sigint_remote_token
;
1464 /* Asynchronous signal handle registered as event loop source for
1465 when we have pending events ready to be passed to the core. */
1467 static struct async_event_handler
*remote_async_inferior_event_token
;
1471 static ptid_t magic_null_ptid
;
1472 static ptid_t not_sent_ptid
;
1473 static ptid_t any_thread_ptid
;
1475 /* Find out if the stub attached to PID (and hence GDB should offer to
1476 detach instead of killing it when bailing out). */
1479 remote_query_attached (int pid
)
1481 struct remote_state
*rs
= get_remote_state ();
1482 size_t size
= get_remote_packet_size ();
1484 if (remote_protocol_packets
[PACKET_qAttached
].support
== PACKET_DISABLE
)
1487 if (remote_multi_process_p (rs
))
1488 xsnprintf (rs
->buf
, size
, "qAttached:%x", pid
);
1490 xsnprintf (rs
->buf
, size
, "qAttached");
1493 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1495 switch (packet_ok (rs
->buf
,
1496 &remote_protocol_packets
[PACKET_qAttached
]))
1499 if (strcmp (rs
->buf
, "1") == 0)
1503 warning (_("Remote failure reply: %s"), rs
->buf
);
1505 case PACKET_UNKNOWN
:
1512 /* Add PID to GDB's inferior table. If FAKE_PID_P is true, then PID
1513 has been invented by GDB, instead of reported by the target. Since
1514 we can be connected to a remote system before before knowing about
1515 any inferior, mark the target with execution when we find the first
1516 inferior. If ATTACHED is 1, then we had just attached to this
1517 inferior. If it is 0, then we just created this inferior. If it
1518 is -1, then try querying the remote stub to find out if it had
1519 attached to the inferior or not. */
1521 static struct inferior
*
1522 remote_add_inferior (int fake_pid_p
, int pid
, int attached
)
1524 struct inferior
*inf
;
1526 /* Check whether this process we're learning about is to be
1527 considered attached, or if is to be considered to have been
1528 spawned by the stub. */
1530 attached
= remote_query_attached (pid
);
1532 if (gdbarch_has_global_solist (target_gdbarch ()))
1534 /* If the target shares code across all inferiors, then every
1535 attach adds a new inferior. */
1536 inf
= add_inferior (pid
);
1538 /* ... and every inferior is bound to the same program space.
1539 However, each inferior may still have its own address
1541 inf
->aspace
= maybe_new_address_space ();
1542 inf
->pspace
= current_program_space
;
1546 /* In the traditional debugging scenario, there's a 1-1 match
1547 between program/address spaces. We simply bind the inferior
1548 to the program space's address space. */
1549 inf
= current_inferior ();
1550 inferior_appeared (inf
, pid
);
1553 inf
->attach_flag
= attached
;
1554 inf
->fake_pid_p
= fake_pid_p
;
1559 /* Add thread PTID to GDB's thread list. Tag it as executing/running
1560 according to RUNNING. */
1563 remote_add_thread (ptid_t ptid
, int running
)
1565 struct remote_state
*rs
= get_remote_state ();
1567 /* GDB historically didn't pull threads in the initial connection
1568 setup. If the remote target doesn't even have a concept of
1569 threads (e.g., a bare-metal target), even if internally we
1570 consider that a single-threaded target, mentioning a new thread
1571 might be confusing to the user. Be silent then, preserving the
1572 age old behavior. */
1573 if (rs
->starting_up
)
1574 add_thread_silent (ptid
);
1578 set_executing (ptid
, running
);
1579 set_running (ptid
, running
);
1582 /* Come here when we learn about a thread id from the remote target.
1583 It may be the first time we hear about such thread, so take the
1584 opportunity to add it to GDB's thread list. In case this is the
1585 first time we're noticing its corresponding inferior, add it to
1586 GDB's inferior list as well. */
1589 remote_notice_new_inferior (ptid_t currthread
, int running
)
1591 /* If this is a new thread, add it to GDB's thread list.
1592 If we leave it up to WFI to do this, bad things will happen. */
1594 if (in_thread_list (currthread
) && is_exited (currthread
))
1596 /* We're seeing an event on a thread id we knew had exited.
1597 This has to be a new thread reusing the old id. Add it. */
1598 remote_add_thread (currthread
, running
);
1602 if (!in_thread_list (currthread
))
1604 struct inferior
*inf
= NULL
;
1605 int pid
= ptid_get_pid (currthread
);
1607 if (ptid_is_pid (inferior_ptid
)
1608 && pid
== ptid_get_pid (inferior_ptid
))
1610 /* inferior_ptid has no thread member yet. This can happen
1611 with the vAttach -> remote_wait,"TAAthread:" path if the
1612 stub doesn't support qC. This is the first stop reported
1613 after an attach, so this is the main thread. Update the
1614 ptid in the thread list. */
1615 if (in_thread_list (pid_to_ptid (pid
)))
1616 thread_change_ptid (inferior_ptid
, currthread
);
1619 remote_add_thread (currthread
, running
);
1620 inferior_ptid
= currthread
;
1625 if (ptid_equal (magic_null_ptid
, inferior_ptid
))
1627 /* inferior_ptid is not set yet. This can happen with the
1628 vRun -> remote_wait,"TAAthread:" path if the stub
1629 doesn't support qC. This is the first stop reported
1630 after an attach, so this is the main thread. Update the
1631 ptid in the thread list. */
1632 thread_change_ptid (inferior_ptid
, currthread
);
1636 /* When connecting to a target remote, or to a target
1637 extended-remote which already was debugging an inferior, we
1638 may not know about it yet. Add it before adding its child
1639 thread, so notifications are emitted in a sensible order. */
1640 if (!in_inferior_list (ptid_get_pid (currthread
)))
1642 struct remote_state
*rs
= get_remote_state ();
1643 int fake_pid_p
= !remote_multi_process_p (rs
);
1645 inf
= remote_add_inferior (fake_pid_p
,
1646 ptid_get_pid (currthread
), -1);
1649 /* This is really a new thread. Add it. */
1650 remote_add_thread (currthread
, running
);
1652 /* If we found a new inferior, let the common code do whatever
1653 it needs to with it (e.g., read shared libraries, insert
1654 breakpoints), unless we're just setting up an all-stop
1658 struct remote_state
*rs
= get_remote_state ();
1660 if (non_stop
|| !rs
->starting_up
)
1661 notice_new_inferior (currthread
, running
, 0);
1666 /* Return the private thread data, creating it if necessary. */
1668 static struct private_thread_info
*
1669 demand_private_info (ptid_t ptid
)
1671 struct thread_info
*info
= find_thread_ptid (ptid
);
1677 info
->private = xmalloc (sizeof (*(info
->private)));
1678 info
->private_dtor
= free_private_thread_info
;
1679 info
->private->core
= -1;
1680 info
->private->extra
= 0;
1683 return info
->private;
1686 /* Call this function as a result of
1687 1) A halt indication (T packet) containing a thread id
1688 2) A direct query of currthread
1689 3) Successful execution of set thread */
1692 record_currthread (struct remote_state
*rs
, ptid_t currthread
)
1694 rs
->general_thread
= currthread
;
1697 /* If 'QPassSignals' is supported, tell the remote stub what signals
1698 it can simply pass through to the inferior without reporting. */
1701 remote_pass_signals (struct target_ops
*self
,
1702 int numsigs
, unsigned char *pass_signals
)
1704 if (remote_protocol_packets
[PACKET_QPassSignals
].support
!= PACKET_DISABLE
)
1706 char *pass_packet
, *p
;
1708 struct remote_state
*rs
= get_remote_state ();
1710 gdb_assert (numsigs
< 256);
1711 for (i
= 0; i
< numsigs
; i
++)
1713 if (pass_signals
[i
])
1716 pass_packet
= xmalloc (count
* 3 + strlen ("QPassSignals:") + 1);
1717 strcpy (pass_packet
, "QPassSignals:");
1718 p
= pass_packet
+ strlen (pass_packet
);
1719 for (i
= 0; i
< numsigs
; i
++)
1721 if (pass_signals
[i
])
1724 *p
++ = tohex (i
>> 4);
1725 *p
++ = tohex (i
& 15);
1734 if (!rs
->last_pass_packet
|| strcmp (rs
->last_pass_packet
, pass_packet
))
1736 putpkt (pass_packet
);
1737 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1738 packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_QPassSignals
]);
1739 if (rs
->last_pass_packet
)
1740 xfree (rs
->last_pass_packet
);
1741 rs
->last_pass_packet
= pass_packet
;
1744 xfree (pass_packet
);
1748 /* If 'QProgramSignals' is supported, tell the remote stub what
1749 signals it should pass through to the inferior when detaching. */
1752 remote_program_signals (struct target_ops
*self
,
1753 int numsigs
, unsigned char *signals
)
1755 if (remote_protocol_packets
[PACKET_QProgramSignals
].support
!= PACKET_DISABLE
)
1759 struct remote_state
*rs
= get_remote_state ();
1761 gdb_assert (numsigs
< 256);
1762 for (i
= 0; i
< numsigs
; i
++)
1767 packet
= xmalloc (count
* 3 + strlen ("QProgramSignals:") + 1);
1768 strcpy (packet
, "QProgramSignals:");
1769 p
= packet
+ strlen (packet
);
1770 for (i
= 0; i
< numsigs
; i
++)
1772 if (signal_pass_state (i
))
1775 *p
++ = tohex (i
>> 4);
1776 *p
++ = tohex (i
& 15);
1785 if (!rs
->last_program_signals_packet
1786 || strcmp (rs
->last_program_signals_packet
, packet
) != 0)
1789 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1790 packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_QProgramSignals
]);
1791 xfree (rs
->last_program_signals_packet
);
1792 rs
->last_program_signals_packet
= packet
;
1799 /* If PTID is MAGIC_NULL_PTID, don't set any thread. If PTID is
1800 MINUS_ONE_PTID, set the thread to -1, so the stub returns the
1801 thread. If GEN is set, set the general thread, if not, then set
1802 the step/continue thread. */
1804 set_thread (struct ptid ptid
, int gen
)
1806 struct remote_state
*rs
= get_remote_state ();
1807 ptid_t state
= gen
? rs
->general_thread
: rs
->continue_thread
;
1808 char *buf
= rs
->buf
;
1809 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
1811 if (ptid_equal (state
, ptid
))
1815 *buf
++ = gen
? 'g' : 'c';
1816 if (ptid_equal (ptid
, magic_null_ptid
))
1817 xsnprintf (buf
, endbuf
- buf
, "0");
1818 else if (ptid_equal (ptid
, any_thread_ptid
))
1819 xsnprintf (buf
, endbuf
- buf
, "0");
1820 else if (ptid_equal (ptid
, minus_one_ptid
))
1821 xsnprintf (buf
, endbuf
- buf
, "-1");
1823 write_ptid (buf
, endbuf
, ptid
);
1825 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1827 rs
->general_thread
= ptid
;
1829 rs
->continue_thread
= ptid
;
1833 set_general_thread (struct ptid ptid
)
1835 set_thread (ptid
, 1);
1839 set_continue_thread (struct ptid ptid
)
1841 set_thread (ptid
, 0);
1844 /* Change the remote current process. Which thread within the process
1845 ends up selected isn't important, as long as it is the same process
1846 as what INFERIOR_PTID points to.
1848 This comes from that fact that there is no explicit notion of
1849 "selected process" in the protocol. The selected process for
1850 general operations is the process the selected general thread
1854 set_general_process (void)
1856 struct remote_state
*rs
= get_remote_state ();
1858 /* If the remote can't handle multiple processes, don't bother. */
1859 if (!rs
->extended
|| !remote_multi_process_p (rs
))
1862 /* We only need to change the remote current thread if it's pointing
1863 at some other process. */
1864 if (ptid_get_pid (rs
->general_thread
) != ptid_get_pid (inferior_ptid
))
1865 set_general_thread (inferior_ptid
);
1869 /* Return nonzero if the thread PTID is still alive on the remote
1873 remote_thread_alive (struct target_ops
*ops
, ptid_t ptid
)
1875 struct remote_state
*rs
= get_remote_state ();
1878 if (ptid_equal (ptid
, magic_null_ptid
))
1879 /* The main thread is always alive. */
1882 if (ptid_get_pid (ptid
) != 0 && ptid_get_lwp (ptid
) == 0)
1883 /* The main thread is always alive. This can happen after a
1884 vAttach, if the remote side doesn't support
1889 endp
= rs
->buf
+ get_remote_packet_size ();
1892 write_ptid (p
, endp
, ptid
);
1895 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1896 return (rs
->buf
[0] == 'O' && rs
->buf
[1] == 'K');
1899 /* About these extended threadlist and threadinfo packets. They are
1900 variable length packets but, the fields within them are often fixed
1901 length. They are redundent enough to send over UDP as is the
1902 remote protocol in general. There is a matching unit test module
1905 /* WARNING: This threadref data structure comes from the remote O.S.,
1906 libstub protocol encoding, and remote.c. It is not particularly
1909 /* Right now, the internal structure is int. We want it to be bigger.
1910 Plan to fix this. */
1912 typedef int gdb_threadref
; /* Internal GDB thread reference. */
1914 /* gdb_ext_thread_info is an internal GDB data structure which is
1915 equivalent to the reply of the remote threadinfo packet. */
1917 struct gdb_ext_thread_info
1919 threadref threadid
; /* External form of thread reference. */
1920 int active
; /* Has state interesting to GDB?
1922 char display
[256]; /* Brief state display, name,
1923 blocked/suspended. */
1924 char shortname
[32]; /* To be used to name threads. */
1925 char more_display
[256]; /* Long info, statistics, queue depth,
1929 /* The volume of remote transfers can be limited by submitting
1930 a mask containing bits specifying the desired information.
1931 Use a union of these values as the 'selection' parameter to
1932 get_thread_info. FIXME: Make these TAG names more thread specific. */
1934 #define TAG_THREADID 1
1935 #define TAG_EXISTS 2
1936 #define TAG_DISPLAY 4
1937 #define TAG_THREADNAME 8
1938 #define TAG_MOREDISPLAY 16
1940 #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2)
1942 static char *unpack_nibble (char *buf
, int *val
);
1944 static char *unpack_byte (char *buf
, int *value
);
1946 static char *pack_int (char *buf
, int value
);
1948 static char *unpack_int (char *buf
, int *value
);
1950 static char *unpack_string (char *src
, char *dest
, int length
);
1952 static char *pack_threadid (char *pkt
, threadref
*id
);
1954 static char *unpack_threadid (char *inbuf
, threadref
*id
);
1956 void int_to_threadref (threadref
*id
, int value
);
1958 static int threadref_to_int (threadref
*ref
);
1960 static void copy_threadref (threadref
*dest
, threadref
*src
);
1962 static int threadmatch (threadref
*dest
, threadref
*src
);
1964 static char *pack_threadinfo_request (char *pkt
, int mode
,
1967 static int remote_unpack_thread_info_response (char *pkt
,
1968 threadref
*expectedref
,
1969 struct gdb_ext_thread_info
1973 static int remote_get_threadinfo (threadref
*threadid
,
1974 int fieldset
, /*TAG mask */
1975 struct gdb_ext_thread_info
*info
);
1977 static char *pack_threadlist_request (char *pkt
, int startflag
,
1979 threadref
*nextthread
);
1981 static int parse_threadlist_response (char *pkt
,
1983 threadref
*original_echo
,
1984 threadref
*resultlist
,
1987 static int remote_get_threadlist (int startflag
,
1988 threadref
*nextthread
,
1992 threadref
*threadlist
);
1994 typedef int (*rmt_thread_action
) (threadref
*ref
, void *context
);
1996 static int remote_threadlist_iterator (rmt_thread_action stepfunction
,
1997 void *context
, int looplimit
);
1999 static int remote_newthread_step (threadref
*ref
, void *context
);
2002 /* Write a PTID to BUF. ENDBUF points to one-passed-the-end of the
2003 buffer we're allowed to write to. Returns
2004 BUF+CHARACTERS_WRITTEN. */
2007 write_ptid (char *buf
, const char *endbuf
, ptid_t ptid
)
2010 struct remote_state
*rs
= get_remote_state ();
2012 if (remote_multi_process_p (rs
))
2014 pid
= ptid_get_pid (ptid
);
2016 buf
+= xsnprintf (buf
, endbuf
- buf
, "p-%x.", -pid
);
2018 buf
+= xsnprintf (buf
, endbuf
- buf
, "p%x.", pid
);
2020 tid
= ptid_get_lwp (ptid
);
2022 buf
+= xsnprintf (buf
, endbuf
- buf
, "-%x", -tid
);
2024 buf
+= xsnprintf (buf
, endbuf
- buf
, "%x", tid
);
2029 /* Extract a PTID from BUF. If non-null, OBUF is set to the to one
2030 passed the last parsed char. Returns null_ptid on error. */
2033 read_ptid (char *buf
, char **obuf
)
2037 ULONGEST pid
= 0, tid
= 0;
2041 /* Multi-process ptid. */
2042 pp
= unpack_varlen_hex (p
+ 1, &pid
);
2044 error (_("invalid remote ptid: %s"), p
);
2047 pp
= unpack_varlen_hex (p
+ 1, &tid
);
2050 return ptid_build (pid
, tid
, 0);
2053 /* No multi-process. Just a tid. */
2054 pp
= unpack_varlen_hex (p
, &tid
);
2056 /* Since the stub is not sending a process id, then default to
2057 what's in inferior_ptid, unless it's null at this point. If so,
2058 then since there's no way to know the pid of the reported
2059 threads, use the magic number. */
2060 if (ptid_equal (inferior_ptid
, null_ptid
))
2061 pid
= ptid_get_pid (magic_null_ptid
);
2063 pid
= ptid_get_pid (inferior_ptid
);
2067 return ptid_build (pid
, tid
, 0);
2073 if (ch
>= 'a' && ch
<= 'f')
2074 return ch
- 'a' + 10;
2075 if (ch
>= '0' && ch
<= '9')
2077 if (ch
>= 'A' && ch
<= 'F')
2078 return ch
- 'A' + 10;
2083 stub_unpack_int (char *buff
, int fieldlength
)
2090 nibble
= stubhex (*buff
++);
2094 retval
= retval
<< 4;
2100 unpack_nibble (char *buf
, int *val
)
2102 *val
= fromhex (*buf
++);
2107 unpack_byte (char *buf
, int *value
)
2109 *value
= stub_unpack_int (buf
, 2);
2114 pack_int (char *buf
, int value
)
2116 buf
= pack_hex_byte (buf
, (value
>> 24) & 0xff);
2117 buf
= pack_hex_byte (buf
, (value
>> 16) & 0xff);
2118 buf
= pack_hex_byte (buf
, (value
>> 8) & 0x0ff);
2119 buf
= pack_hex_byte (buf
, (value
& 0xff));
2124 unpack_int (char *buf
, int *value
)
2126 *value
= stub_unpack_int (buf
, 8);
2130 #if 0 /* Currently unused, uncomment when needed. */
2131 static char *pack_string (char *pkt
, char *string
);
2134 pack_string (char *pkt
, char *string
)
2139 len
= strlen (string
);
2141 len
= 200; /* Bigger than most GDB packets, junk??? */
2142 pkt
= pack_hex_byte (pkt
, len
);
2146 if ((ch
== '\0') || (ch
== '#'))
2147 ch
= '*'; /* Protect encapsulation. */
2152 #endif /* 0 (unused) */
2155 unpack_string (char *src
, char *dest
, int length
)
2164 pack_threadid (char *pkt
, threadref
*id
)
2167 unsigned char *altid
;
2169 altid
= (unsigned char *) id
;
2170 limit
= pkt
+ BUF_THREAD_ID_SIZE
;
2172 pkt
= pack_hex_byte (pkt
, *altid
++);
2178 unpack_threadid (char *inbuf
, threadref
*id
)
2181 char *limit
= inbuf
+ BUF_THREAD_ID_SIZE
;
2184 altref
= (char *) id
;
2186 while (inbuf
< limit
)
2188 x
= stubhex (*inbuf
++);
2189 y
= stubhex (*inbuf
++);
2190 *altref
++ = (x
<< 4) | y
;
2195 /* Externally, threadrefs are 64 bits but internally, they are still
2196 ints. This is due to a mismatch of specifications. We would like
2197 to use 64bit thread references internally. This is an adapter
2201 int_to_threadref (threadref
*id
, int value
)
2203 unsigned char *scan
;
2205 scan
= (unsigned char *) id
;
2211 *scan
++ = (value
>> 24) & 0xff;
2212 *scan
++ = (value
>> 16) & 0xff;
2213 *scan
++ = (value
>> 8) & 0xff;
2214 *scan
++ = (value
& 0xff);
2218 threadref_to_int (threadref
*ref
)
2221 unsigned char *scan
;
2227 value
= (value
<< 8) | ((*scan
++) & 0xff);
2232 copy_threadref (threadref
*dest
, threadref
*src
)
2235 unsigned char *csrc
, *cdest
;
2237 csrc
= (unsigned char *) src
;
2238 cdest
= (unsigned char *) dest
;
2245 threadmatch (threadref
*dest
, threadref
*src
)
2247 /* Things are broken right now, so just assume we got a match. */
2249 unsigned char *srcp
, *destp
;
2251 srcp
= (char *) src
;
2252 destp
= (char *) dest
;
2256 result
&= (*srcp
++ == *destp
++) ? 1 : 0;
2263 threadid:1, # always request threadid
2270 /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */
2273 pack_threadinfo_request (char *pkt
, int mode
, threadref
*id
)
2275 *pkt
++ = 'q'; /* Info Query */
2276 *pkt
++ = 'P'; /* process or thread info */
2277 pkt
= pack_int (pkt
, mode
); /* mode */
2278 pkt
= pack_threadid (pkt
, id
); /* threadid */
2279 *pkt
= '\0'; /* terminate */
2283 /* These values tag the fields in a thread info response packet. */
2284 /* Tagging the fields allows us to request specific fields and to
2285 add more fields as time goes by. */
2287 #define TAG_THREADID 1 /* Echo the thread identifier. */
2288 #define TAG_EXISTS 2 /* Is this process defined enough to
2289 fetch registers and its stack? */
2290 #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */
2291 #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */
2292 #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about
2296 remote_unpack_thread_info_response (char *pkt
, threadref
*expectedref
,
2297 struct gdb_ext_thread_info
*info
)
2299 struct remote_state
*rs
= get_remote_state ();
2303 char *limit
= pkt
+ rs
->buf_size
; /* Plausible parsing limit. */
2306 /* info->threadid = 0; FIXME: implement zero_threadref. */
2308 info
->display
[0] = '\0';
2309 info
->shortname
[0] = '\0';
2310 info
->more_display
[0] = '\0';
2312 /* Assume the characters indicating the packet type have been
2314 pkt
= unpack_int (pkt
, &mask
); /* arg mask */
2315 pkt
= unpack_threadid (pkt
, &ref
);
2318 warning (_("Incomplete response to threadinfo request."));
2319 if (!threadmatch (&ref
, expectedref
))
2320 { /* This is an answer to a different request. */
2321 warning (_("ERROR RMT Thread info mismatch."));
2324 copy_threadref (&info
->threadid
, &ref
);
2326 /* Loop on tagged fields , try to bail if somthing goes wrong. */
2328 /* Packets are terminated with nulls. */
2329 while ((pkt
< limit
) && mask
&& *pkt
)
2331 pkt
= unpack_int (pkt
, &tag
); /* tag */
2332 pkt
= unpack_byte (pkt
, &length
); /* length */
2333 if (!(tag
& mask
)) /* Tags out of synch with mask. */
2335 warning (_("ERROR RMT: threadinfo tag mismatch."));
2339 if (tag
== TAG_THREADID
)
2343 warning (_("ERROR RMT: length of threadid is not 16."));
2347 pkt
= unpack_threadid (pkt
, &ref
);
2348 mask
= mask
& ~TAG_THREADID
;
2351 if (tag
== TAG_EXISTS
)
2353 info
->active
= stub_unpack_int (pkt
, length
);
2355 mask
= mask
& ~(TAG_EXISTS
);
2358 warning (_("ERROR RMT: 'exists' length too long."));
2364 if (tag
== TAG_THREADNAME
)
2366 pkt
= unpack_string (pkt
, &info
->shortname
[0], length
);
2367 mask
= mask
& ~TAG_THREADNAME
;
2370 if (tag
== TAG_DISPLAY
)
2372 pkt
= unpack_string (pkt
, &info
->display
[0], length
);
2373 mask
= mask
& ~TAG_DISPLAY
;
2376 if (tag
== TAG_MOREDISPLAY
)
2378 pkt
= unpack_string (pkt
, &info
->more_display
[0], length
);
2379 mask
= mask
& ~TAG_MOREDISPLAY
;
2382 warning (_("ERROR RMT: unknown thread info tag."));
2383 break; /* Not a tag we know about. */
2389 remote_get_threadinfo (threadref
*threadid
, int fieldset
, /* TAG mask */
2390 struct gdb_ext_thread_info
*info
)
2392 struct remote_state
*rs
= get_remote_state ();
2395 pack_threadinfo_request (rs
->buf
, fieldset
, threadid
);
2397 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2399 if (rs
->buf
[0] == '\0')
2402 result
= remote_unpack_thread_info_response (rs
->buf
+ 2,
2407 /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */
2410 pack_threadlist_request (char *pkt
, int startflag
, int threadcount
,
2411 threadref
*nextthread
)
2413 *pkt
++ = 'q'; /* info query packet */
2414 *pkt
++ = 'L'; /* Process LIST or threadLIST request */
2415 pkt
= pack_nibble (pkt
, startflag
); /* initflag 1 bytes */
2416 pkt
= pack_hex_byte (pkt
, threadcount
); /* threadcount 2 bytes */
2417 pkt
= pack_threadid (pkt
, nextthread
); /* 64 bit thread identifier */
2422 /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */
2425 parse_threadlist_response (char *pkt
, int result_limit
,
2426 threadref
*original_echo
, threadref
*resultlist
,
2429 struct remote_state
*rs
= get_remote_state ();
2431 int count
, resultcount
, done
;
2434 /* Assume the 'q' and 'M chars have been stripped. */
2435 limit
= pkt
+ (rs
->buf_size
- BUF_THREAD_ID_SIZE
);
2436 /* done parse past here */
2437 pkt
= unpack_byte (pkt
, &count
); /* count field */
2438 pkt
= unpack_nibble (pkt
, &done
);
2439 /* The first threadid is the argument threadid. */
2440 pkt
= unpack_threadid (pkt
, original_echo
); /* should match query packet */
2441 while ((count
-- > 0) && (pkt
< limit
))
2443 pkt
= unpack_threadid (pkt
, resultlist
++);
2444 if (resultcount
++ >= result_limit
)
2453 remote_get_threadlist (int startflag
, threadref
*nextthread
, int result_limit
,
2454 int *done
, int *result_count
, threadref
*threadlist
)
2456 struct remote_state
*rs
= get_remote_state ();
2459 /* Trancate result limit to be smaller than the packet size. */
2460 if ((((result_limit
+ 1) * BUF_THREAD_ID_SIZE
) + 10)
2461 >= get_remote_packet_size ())
2462 result_limit
= (get_remote_packet_size () / BUF_THREAD_ID_SIZE
) - 2;
2464 pack_threadlist_request (rs
->buf
, startflag
, result_limit
, nextthread
);
2466 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2468 if (*rs
->buf
== '\0')
2472 parse_threadlist_response (rs
->buf
+ 2, result_limit
,
2473 &rs
->echo_nextthread
, threadlist
, done
);
2475 if (!threadmatch (&rs
->echo_nextthread
, nextthread
))
2477 /* FIXME: This is a good reason to drop the packet. */
2478 /* Possably, there is a duplicate response. */
2480 retransmit immediatly - race conditions
2481 retransmit after timeout - yes
2483 wait for packet, then exit
2485 warning (_("HMM: threadlist did not echo arg thread, dropping it."));
2486 return 0; /* I choose simply exiting. */
2488 if (*result_count
<= 0)
2492 warning (_("RMT ERROR : failed to get remote thread list."));
2495 return result
; /* break; */
2497 if (*result_count
> result_limit
)
2500 warning (_("RMT ERROR: threadlist response longer than requested."));
2506 /* This is the interface between remote and threads, remotes upper
2509 /* remote_find_new_threads retrieves the thread list and for each
2510 thread in the list, looks up the thread in GDB's internal list,
2511 adding the thread if it does not already exist. This involves
2512 getting partial thread lists from the remote target so, polling the
2513 quit_flag is required. */
2517 remote_threadlist_iterator (rmt_thread_action stepfunction
, void *context
,
2520 struct remote_state
*rs
= get_remote_state ();
2521 int done
, i
, result_count
;
2529 if (loopcount
++ > looplimit
)
2532 warning (_("Remote fetch threadlist -infinite loop-."));
2535 if (!remote_get_threadlist (startflag
, &rs
->nextthread
,
2536 MAXTHREADLISTRESULTS
,
2537 &done
, &result_count
, rs
->resultthreadlist
))
2542 /* Clear for later iterations. */
2544 /* Setup to resume next batch of thread references, set nextthread. */
2545 if (result_count
>= 1)
2546 copy_threadref (&rs
->nextthread
,
2547 &rs
->resultthreadlist
[result_count
- 1]);
2549 while (result_count
--)
2550 if (!(result
= (*stepfunction
) (&rs
->resultthreadlist
[i
++], context
)))
2557 remote_newthread_step (threadref
*ref
, void *context
)
2559 int pid
= ptid_get_pid (inferior_ptid
);
2560 ptid_t ptid
= ptid_build (pid
, threadref_to_int (ref
), 0);
2562 if (!in_thread_list (ptid
))
2564 return 1; /* continue iterator */
2567 #define CRAZY_MAX_THREADS 1000
2570 remote_current_thread (ptid_t oldpid
)
2572 struct remote_state
*rs
= get_remote_state ();
2575 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2576 if (rs
->buf
[0] == 'Q' && rs
->buf
[1] == 'C')
2577 return read_ptid (&rs
->buf
[2], NULL
);
2582 /* Find new threads for info threads command.
2583 * Original version, using John Metzler's thread protocol.
2587 remote_find_new_threads (void)
2589 remote_threadlist_iterator (remote_newthread_step
, 0,
2593 #if defined(HAVE_LIBEXPAT)
2595 typedef struct thread_item
2601 DEF_VEC_O(thread_item_t
);
2603 struct threads_parsing_context
2605 VEC (thread_item_t
) *items
;
2609 start_thread (struct gdb_xml_parser
*parser
,
2610 const struct gdb_xml_element
*element
,
2611 void *user_data
, VEC(gdb_xml_value_s
) *attributes
)
2613 struct threads_parsing_context
*data
= user_data
;
2615 struct thread_item item
;
2617 struct gdb_xml_value
*attr
;
2619 id
= xml_find_attribute (attributes
, "id")->value
;
2620 item
.ptid
= read_ptid (id
, NULL
);
2622 attr
= xml_find_attribute (attributes
, "core");
2624 item
.core
= *(ULONGEST
*) attr
->value
;
2630 VEC_safe_push (thread_item_t
, data
->items
, &item
);
2634 end_thread (struct gdb_xml_parser
*parser
,
2635 const struct gdb_xml_element
*element
,
2636 void *user_data
, const char *body_text
)
2638 struct threads_parsing_context
*data
= user_data
;
2640 if (body_text
&& *body_text
)
2641 VEC_last (thread_item_t
, data
->items
)->extra
= xstrdup (body_text
);
2644 const struct gdb_xml_attribute thread_attributes
[] = {
2645 { "id", GDB_XML_AF_NONE
, NULL
, NULL
},
2646 { "core", GDB_XML_AF_OPTIONAL
, gdb_xml_parse_attr_ulongest
, NULL
},
2647 { NULL
, GDB_XML_AF_NONE
, NULL
, NULL
}
2650 const struct gdb_xml_element thread_children
[] = {
2651 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
2654 const struct gdb_xml_element threads_children
[] = {
2655 { "thread", thread_attributes
, thread_children
,
2656 GDB_XML_EF_REPEATABLE
| GDB_XML_EF_OPTIONAL
,
2657 start_thread
, end_thread
},
2658 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
2661 const struct gdb_xml_element threads_elements
[] = {
2662 { "threads", NULL
, threads_children
,
2663 GDB_XML_EF_NONE
, NULL
, NULL
},
2664 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
2667 /* Discard the contents of the constructed thread info context. */
2670 clear_threads_parsing_context (void *p
)
2672 struct threads_parsing_context
*context
= p
;
2674 struct thread_item
*item
;
2676 for (i
= 0; VEC_iterate (thread_item_t
, context
->items
, i
, item
); ++i
)
2677 xfree (item
->extra
);
2679 VEC_free (thread_item_t
, context
->items
);
2685 * Find all threads for info threads command.
2686 * Uses new thread protocol contributed by Cisco.
2687 * Falls back and attempts to use the older method (above)
2688 * if the target doesn't respond to the new method.
2692 remote_threads_info (struct target_ops
*ops
)
2694 struct remote_state
*rs
= get_remote_state ();
2698 if (rs
->remote_desc
== 0) /* paranoia */
2699 error (_("Command can only be used when connected to the remote target."));
2701 #if defined(HAVE_LIBEXPAT)
2702 if (remote_protocol_packets
[PACKET_qXfer_threads
].support
== PACKET_ENABLE
)
2704 char *xml
= target_read_stralloc (¤t_target
,
2705 TARGET_OBJECT_THREADS
, NULL
);
2707 struct cleanup
*back_to
= make_cleanup (xfree
, xml
);
2711 struct threads_parsing_context context
;
2713 context
.items
= NULL
;
2714 make_cleanup (clear_threads_parsing_context
, &context
);
2716 if (gdb_xml_parse_quick (_("threads"), "threads.dtd",
2717 threads_elements
, xml
, &context
) == 0)
2720 struct thread_item
*item
;
2723 VEC_iterate (thread_item_t
, context
.items
, i
, item
);
2726 if (!ptid_equal (item
->ptid
, null_ptid
))
2728 struct private_thread_info
*info
;
2729 /* In non-stop mode, we assume new found threads
2730 are running until proven otherwise with a
2731 stop reply. In all-stop, we can only get
2732 here if all threads are stopped. */
2733 int running
= non_stop
? 1 : 0;
2735 remote_notice_new_inferior (item
->ptid
, running
);
2737 info
= demand_private_info (item
->ptid
);
2738 info
->core
= item
->core
;
2739 info
->extra
= item
->extra
;
2746 do_cleanups (back_to
);
2751 if (rs
->use_threadinfo_query
)
2753 putpkt ("qfThreadInfo");
2754 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2756 if (bufp
[0] != '\0') /* q packet recognized */
2758 struct cleanup
*old_chain
;
2761 /* remote_notice_new_inferior (in the loop below) may make
2762 new RSP calls, which clobber rs->buf. Work with a
2764 bufp
= saved_reply
= xstrdup (rs
->buf
);
2765 old_chain
= make_cleanup (free_current_contents
, &saved_reply
);
2767 while (*bufp
++ == 'm') /* reply contains one or more TID */
2771 new_thread
= read_ptid (bufp
, &bufp
);
2772 if (!ptid_equal (new_thread
, null_ptid
))
2774 /* In non-stop mode, we assume new found threads
2775 are running until proven otherwise with a
2776 stop reply. In all-stop, we can only get
2777 here if all threads are stopped. */
2778 int running
= non_stop
? 1 : 0;
2780 remote_notice_new_inferior (new_thread
, running
);
2783 while (*bufp
++ == ','); /* comma-separated list */
2784 free_current_contents (&saved_reply
);
2785 putpkt ("qsThreadInfo");
2786 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2787 bufp
= saved_reply
= xstrdup (rs
->buf
);
2789 do_cleanups (old_chain
);
2794 /* Only qfThreadInfo is supported in non-stop mode. */
2798 /* Else fall back to old method based on jmetzler protocol. */
2799 rs
->use_threadinfo_query
= 0;
2800 remote_find_new_threads ();
2805 * Collect a descriptive string about the given thread.
2806 * The target may say anything it wants to about the thread
2807 * (typically info about its blocked / runnable state, name, etc.).
2808 * This string will appear in the info threads display.
2810 * Optional: targets are not required to implement this function.
2814 remote_threads_extra_info (struct target_ops
*self
, struct thread_info
*tp
)
2816 struct remote_state
*rs
= get_remote_state ();
2820 struct gdb_ext_thread_info threadinfo
;
2821 static char display_buf
[100]; /* arbitrary... */
2822 int n
= 0; /* position in display_buf */
2824 if (rs
->remote_desc
== 0) /* paranoia */
2825 internal_error (__FILE__
, __LINE__
,
2826 _("remote_threads_extra_info"));
2828 if (ptid_equal (tp
->ptid
, magic_null_ptid
)
2829 || (ptid_get_pid (tp
->ptid
) != 0 && ptid_get_lwp (tp
->ptid
) == 0))
2830 /* This is the main thread which was added by GDB. The remote
2831 server doesn't know about it. */
2834 if (remote_protocol_packets
[PACKET_qXfer_threads
].support
== PACKET_ENABLE
)
2836 struct thread_info
*info
= find_thread_ptid (tp
->ptid
);
2838 if (info
&& info
->private)
2839 return info
->private->extra
;
2844 if (rs
->use_threadextra_query
)
2847 char *endb
= rs
->buf
+ get_remote_packet_size ();
2849 xsnprintf (b
, endb
- b
, "qThreadExtraInfo,");
2851 write_ptid (b
, endb
, tp
->ptid
);
2854 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2855 if (rs
->buf
[0] != 0)
2857 n
= min (strlen (rs
->buf
) / 2, sizeof (display_buf
));
2858 result
= hex2bin (rs
->buf
, (gdb_byte
*) display_buf
, n
);
2859 display_buf
[result
] = '\0';
2864 /* If the above query fails, fall back to the old method. */
2865 rs
->use_threadextra_query
= 0;
2866 set
= TAG_THREADID
| TAG_EXISTS
| TAG_THREADNAME
2867 | TAG_MOREDISPLAY
| TAG_DISPLAY
;
2868 int_to_threadref (&id
, ptid_get_lwp (tp
->ptid
));
2869 if (remote_get_threadinfo (&id
, set
, &threadinfo
))
2870 if (threadinfo
.active
)
2872 if (*threadinfo
.shortname
)
2873 n
+= xsnprintf (&display_buf
[0], sizeof (display_buf
) - n
,
2874 " Name: %s,", threadinfo
.shortname
);
2875 if (*threadinfo
.display
)
2876 n
+= xsnprintf (&display_buf
[n
], sizeof (display_buf
) - n
,
2877 " State: %s,", threadinfo
.display
);
2878 if (*threadinfo
.more_display
)
2879 n
+= xsnprintf (&display_buf
[n
], sizeof (display_buf
) - n
,
2880 " Priority: %s", threadinfo
.more_display
);
2884 /* For purely cosmetic reasons, clear up trailing commas. */
2885 if (',' == display_buf
[n
-1])
2886 display_buf
[n
-1] = ' ';
2895 remote_static_tracepoint_marker_at (struct target_ops
*self
, CORE_ADDR addr
,
2896 struct static_tracepoint_marker
*marker
)
2898 struct remote_state
*rs
= get_remote_state ();
2901 xsnprintf (p
, get_remote_packet_size (), "qTSTMat:");
2903 p
+= hexnumstr (p
, addr
);
2905 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2909 error (_("Remote failure reply: %s"), p
);
2913 parse_static_tracepoint_marker_definition (p
, &p
, marker
);
2920 static VEC(static_tracepoint_marker_p
) *
2921 remote_static_tracepoint_markers_by_strid (struct target_ops
*self
,
2924 struct remote_state
*rs
= get_remote_state ();
2925 VEC(static_tracepoint_marker_p
) *markers
= NULL
;
2926 struct static_tracepoint_marker
*marker
= NULL
;
2927 struct cleanup
*old_chain
;
2930 /* Ask for a first packet of static tracepoint marker
2933 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2936 error (_("Remote failure reply: %s"), p
);
2938 old_chain
= make_cleanup (free_current_marker
, &marker
);
2943 marker
= XCNEW (struct static_tracepoint_marker
);
2947 parse_static_tracepoint_marker_definition (p
, &p
, marker
);
2949 if (strid
== NULL
|| strcmp (strid
, marker
->str_id
) == 0)
2951 VEC_safe_push (static_tracepoint_marker_p
,
2957 release_static_tracepoint_marker (marker
);
2958 memset (marker
, 0, sizeof (*marker
));
2961 while (*p
++ == ','); /* comma-separated list */
2962 /* Ask for another packet of static tracepoint definition. */
2964 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2968 do_cleanups (old_chain
);
2973 /* Implement the to_get_ada_task_ptid function for the remote targets. */
2976 remote_get_ada_task_ptid (struct target_ops
*self
, long lwp
, long thread
)
2978 return ptid_build (ptid_get_pid (inferior_ptid
), lwp
, 0);
2982 /* Restart the remote side; this is an extended protocol operation. */
2985 extended_remote_restart (void)
2987 struct remote_state
*rs
= get_remote_state ();
2989 /* Send the restart command; for reasons I don't understand the
2990 remote side really expects a number after the "R". */
2991 xsnprintf (rs
->buf
, get_remote_packet_size (), "R%x", 0);
2994 remote_fileio_reset ();
2997 /* Clean up connection to a remote debugger. */
3000 remote_close (struct target_ops
*self
)
3002 struct remote_state
*rs
= get_remote_state ();
3004 if (rs
->remote_desc
== NULL
)
3005 return; /* already closed */
3007 /* Make sure we leave stdin registered in the event loop, and we
3008 don't leave the async SIGINT signal handler installed. */
3009 remote_terminal_ours (self
);
3011 serial_close (rs
->remote_desc
);
3012 rs
->remote_desc
= NULL
;
3014 /* We don't have a connection to the remote stub anymore. Get rid
3015 of all the inferiors and their threads we were controlling.
3016 Reset inferior_ptid to null_ptid first, as otherwise has_stack_frame
3017 will be unable to find the thread corresponding to (pid, 0, 0). */
3018 inferior_ptid
= null_ptid
;
3019 discard_all_inferiors ();
3021 /* We are closing the remote target, so we should discard
3022 everything of this target. */
3023 discard_pending_stop_replies_in_queue (rs
);
3025 if (remote_async_inferior_event_token
)
3026 delete_async_event_handler (&remote_async_inferior_event_token
);
3028 remote_notif_state_xfree (rs
->notif_state
);
3030 trace_reset_local_state ();
3033 /* Query the remote side for the text, data and bss offsets. */
3038 struct remote_state
*rs
= get_remote_state ();
3041 int lose
, num_segments
= 0, do_sections
, do_segments
;
3042 CORE_ADDR text_addr
, data_addr
, bss_addr
, segments
[2];
3043 struct section_offsets
*offs
;
3044 struct symfile_segment_data
*data
;
3046 if (symfile_objfile
== NULL
)
3049 putpkt ("qOffsets");
3050 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3053 if (buf
[0] == '\000')
3054 return; /* Return silently. Stub doesn't support
3058 warning (_("Remote failure reply: %s"), buf
);
3062 /* Pick up each field in turn. This used to be done with scanf, but
3063 scanf will make trouble if CORE_ADDR size doesn't match
3064 conversion directives correctly. The following code will work
3065 with any size of CORE_ADDR. */
3066 text_addr
= data_addr
= bss_addr
= 0;
3070 if (strncmp (ptr
, "Text=", 5) == 0)
3073 /* Don't use strtol, could lose on big values. */
3074 while (*ptr
&& *ptr
!= ';')
3075 text_addr
= (text_addr
<< 4) + fromhex (*ptr
++);
3077 if (strncmp (ptr
, ";Data=", 6) == 0)
3080 while (*ptr
&& *ptr
!= ';')
3081 data_addr
= (data_addr
<< 4) + fromhex (*ptr
++);
3086 if (!lose
&& strncmp (ptr
, ";Bss=", 5) == 0)
3089 while (*ptr
&& *ptr
!= ';')
3090 bss_addr
= (bss_addr
<< 4) + fromhex (*ptr
++);
3092 if (bss_addr
!= data_addr
)
3093 warning (_("Target reported unsupported offsets: %s"), buf
);
3098 else if (strncmp (ptr
, "TextSeg=", 8) == 0)
3101 /* Don't use strtol, could lose on big values. */
3102 while (*ptr
&& *ptr
!= ';')
3103 text_addr
= (text_addr
<< 4) + fromhex (*ptr
++);
3106 if (strncmp (ptr
, ";DataSeg=", 9) == 0)
3109 while (*ptr
&& *ptr
!= ';')
3110 data_addr
= (data_addr
<< 4) + fromhex (*ptr
++);
3118 error (_("Malformed response to offset query, %s"), buf
);
3119 else if (*ptr
!= '\0')
3120 warning (_("Target reported unsupported offsets: %s"), buf
);
3122 offs
= ((struct section_offsets
*)
3123 alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
)));
3124 memcpy (offs
, symfile_objfile
->section_offsets
,
3125 SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
));
3127 data
= get_symfile_segment_data (symfile_objfile
->obfd
);
3128 do_segments
= (data
!= NULL
);
3129 do_sections
= num_segments
== 0;
3131 if (num_segments
> 0)
3133 segments
[0] = text_addr
;
3134 segments
[1] = data_addr
;
3136 /* If we have two segments, we can still try to relocate everything
3137 by assuming that the .text and .data offsets apply to the whole
3138 text and data segments. Convert the offsets given in the packet
3139 to base addresses for symfile_map_offsets_to_segments. */
3140 else if (data
&& data
->num_segments
== 2)
3142 segments
[0] = data
->segment_bases
[0] + text_addr
;
3143 segments
[1] = data
->segment_bases
[1] + data_addr
;
3146 /* If the object file has only one segment, assume that it is text
3147 rather than data; main programs with no writable data are rare,
3148 but programs with no code are useless. Of course the code might
3149 have ended up in the data segment... to detect that we would need
3150 the permissions here. */
3151 else if (data
&& data
->num_segments
== 1)
3153 segments
[0] = data
->segment_bases
[0] + text_addr
;
3156 /* There's no way to relocate by segment. */
3162 int ret
= symfile_map_offsets_to_segments (symfile_objfile
->obfd
, data
,
3163 offs
, num_segments
, segments
);
3165 if (ret
== 0 && !do_sections
)
3166 error (_("Can not handle qOffsets TextSeg "
3167 "response with this symbol file"));
3174 free_symfile_segment_data (data
);
3178 offs
->offsets
[SECT_OFF_TEXT (symfile_objfile
)] = text_addr
;
3180 /* This is a temporary kludge to force data and bss to use the
3181 same offsets because that's what nlmconv does now. The real
3182 solution requires changes to the stub and remote.c that I
3183 don't have time to do right now. */
3185 offs
->offsets
[SECT_OFF_DATA (symfile_objfile
)] = data_addr
;
3186 offs
->offsets
[SECT_OFF_BSS (symfile_objfile
)] = data_addr
;
3189 objfile_relocate (symfile_objfile
, offs
);
3192 /* Callback for iterate_over_threads. Set the STOP_REQUESTED flags in
3193 threads we know are stopped already. This is used during the
3194 initial remote connection in non-stop mode --- threads that are
3195 reported as already being stopped are left stopped. */
3198 set_stop_requested_callback (struct thread_info
*thread
, void *data
)
3200 /* If we have a stop reply for this thread, it must be stopped. */
3201 if (peek_stop_reply (thread
->ptid
))
3202 set_stop_requested (thread
->ptid
, 1);
3207 /* Send interrupt_sequence to remote target. */
3209 send_interrupt_sequence (void)
3211 struct remote_state
*rs
= get_remote_state ();
3213 if (interrupt_sequence_mode
== interrupt_sequence_control_c
)
3214 remote_serial_write ("\x03", 1);
3215 else if (interrupt_sequence_mode
== interrupt_sequence_break
)
3216 serial_send_break (rs
->remote_desc
);
3217 else if (interrupt_sequence_mode
== interrupt_sequence_break_g
)
3219 serial_send_break (rs
->remote_desc
);
3220 remote_serial_write ("g", 1);
3223 internal_error (__FILE__
, __LINE__
,
3224 _("Invalid value for interrupt_sequence_mode: %s."),
3225 interrupt_sequence_mode
);
3229 /* If STOP_REPLY is a T stop reply, look for the "thread" register,
3230 and extract the PTID. Returns NULL_PTID if not found. */
3233 stop_reply_extract_thread (char *stop_reply
)
3235 if (stop_reply
[0] == 'T' && strlen (stop_reply
) > 3)
3239 /* Txx r:val ; r:val (...) */
3242 /* Look for "register" named "thread". */
3247 p1
= strchr (p
, ':');
3251 if (strncmp (p
, "thread", p1
- p
) == 0)
3252 return read_ptid (++p1
, &p
);
3254 p1
= strchr (p
, ';');
3266 /* Determine the remote side's current thread. If we have a stop
3267 reply handy (in WAIT_STATUS), maybe it's a T stop reply with a
3268 "thread" register we can extract the current thread from. If not,
3269 ask the remote which is the current thread with qC. The former
3270 method avoids a roundtrip. */
3273 get_current_thread (char *wait_status
)
3277 /* Note we don't use remote_parse_stop_reply as that makes use of
3278 the target architecture, which we haven't yet fully determined at
3280 if (wait_status
!= NULL
)
3281 ptid
= stop_reply_extract_thread (wait_status
);
3282 if (ptid_equal (ptid
, null_ptid
))
3283 ptid
= remote_current_thread (inferior_ptid
);
3288 /* Query the remote target for which is the current thread/process,
3289 add it to our tables, and update INFERIOR_PTID. The caller is
3290 responsible for setting the state such that the remote end is ready
3291 to return the current thread.
3293 This function is called after handling the '?' or 'vRun' packets,
3294 whose response is a stop reply from which we can also try
3295 extracting the thread. If the target doesn't support the explicit
3296 qC query, we infer the current thread from that stop reply, passed
3297 in in WAIT_STATUS, which may be NULL. */
3300 add_current_inferior_and_thread (char *wait_status
)
3302 struct remote_state
*rs
= get_remote_state ();
3304 ptid_t ptid
= null_ptid
;
3306 inferior_ptid
= null_ptid
;
3308 /* Now, if we have thread information, update inferior_ptid. */
3309 ptid
= get_current_thread (wait_status
);
3311 if (!ptid_equal (ptid
, null_ptid
))
3313 if (!remote_multi_process_p (rs
))
3316 inferior_ptid
= ptid
;
3320 /* Without this, some commands which require an active target
3321 (such as kill) won't work. This variable serves (at least)
3322 double duty as both the pid of the target process (if it has
3323 such), and as a flag indicating that a target is active. */
3324 inferior_ptid
= magic_null_ptid
;
3328 remote_add_inferior (fake_pid_p
, ptid_get_pid (inferior_ptid
), -1);
3330 /* Add the main thread. */
3331 add_thread_silent (inferior_ptid
);
3335 remote_start_remote (int from_tty
, struct target_ops
*target
, int extended_p
)
3337 struct remote_state
*rs
= get_remote_state ();
3338 struct packet_config
*noack_config
;
3339 char *wait_status
= NULL
;
3341 immediate_quit
++; /* Allow user to interrupt it. */
3344 if (interrupt_on_connect
)
3345 send_interrupt_sequence ();
3347 /* Ack any packet which the remote side has already sent. */
3348 serial_write (rs
->remote_desc
, "+", 1);
3350 /* Signal other parts that we're going through the initial setup,
3351 and so things may not be stable yet. */
3352 rs
->starting_up
= 1;
3354 /* The first packet we send to the target is the optional "supported
3355 packets" request. If the target can answer this, it will tell us
3356 which later probes to skip. */
3357 remote_query_supported ();
3359 /* If the stub wants to get a QAllow, compose one and send it. */
3360 if (remote_protocol_packets
[PACKET_QAllow
].support
!= PACKET_DISABLE
)
3361 remote_set_permissions (target
);
3363 /* Next, we possibly activate noack mode.
3365 If the QStartNoAckMode packet configuration is set to AUTO,
3366 enable noack mode if the stub reported a wish for it with
3369 If set to TRUE, then enable noack mode even if the stub didn't
3370 report it in qSupported. If the stub doesn't reply OK, the
3371 session ends with an error.
3373 If FALSE, then don't activate noack mode, regardless of what the
3374 stub claimed should be the default with qSupported. */
3376 noack_config
= &remote_protocol_packets
[PACKET_QStartNoAckMode
];
3378 if (noack_config
->detect
== AUTO_BOOLEAN_TRUE
3379 || (noack_config
->detect
== AUTO_BOOLEAN_AUTO
3380 && noack_config
->support
== PACKET_ENABLE
))
3382 putpkt ("QStartNoAckMode");
3383 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3384 if (packet_ok (rs
->buf
, noack_config
) == PACKET_OK
)
3390 /* Tell the remote that we are using the extended protocol. */
3392 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3395 /* Let the target know which signals it is allowed to pass down to
3397 update_signals_program_target ();
3399 /* Next, if the target can specify a description, read it. We do
3400 this before anything involving memory or registers. */
3401 target_find_description ();
3403 /* Next, now that we know something about the target, update the
3404 address spaces in the program spaces. */
3405 update_address_spaces ();
3407 /* On OSs where the list of libraries is global to all
3408 processes, we fetch them early. */
3409 if (gdbarch_has_global_solist (target_gdbarch ()))
3410 solib_add (NULL
, from_tty
, target
, auto_solib_add
);
3414 if (!rs
->non_stop_aware
)
3415 error (_("Non-stop mode requested, but remote "
3416 "does not support non-stop"));
3418 putpkt ("QNonStop:1");
3419 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3421 if (strcmp (rs
->buf
, "OK") != 0)
3422 error (_("Remote refused setting non-stop mode with: %s"), rs
->buf
);
3424 /* Find about threads and processes the stub is already
3425 controlling. We default to adding them in the running state.
3426 The '?' query below will then tell us about which threads are
3428 remote_threads_info (target
);
3430 else if (rs
->non_stop_aware
)
3432 /* Don't assume that the stub can operate in all-stop mode.
3433 Request it explicitly. */
3434 putpkt ("QNonStop:0");
3435 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3437 if (strcmp (rs
->buf
, "OK") != 0)
3438 error (_("Remote refused setting all-stop mode with: %s"), rs
->buf
);
3441 /* Upload TSVs regardless of whether the target is running or not. The
3442 remote stub, such as GDBserver, may have some predefined or builtin
3443 TSVs, even if the target is not running. */
3444 if (remote_get_trace_status (target
, current_trace_status ()) != -1)
3446 struct uploaded_tsv
*uploaded_tsvs
= NULL
;
3448 remote_upload_trace_state_variables (target
, &uploaded_tsvs
);
3449 merge_uploaded_trace_state_variables (&uploaded_tsvs
);
3452 /* Check whether the target is running now. */
3454 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3460 struct inferior
*inf
;
3462 if (rs
->buf
[0] == 'W' || rs
->buf
[0] == 'X')
3465 error (_("The target is not running (try extended-remote?)"));
3467 /* We're connected, but not running. Drop out before we
3468 call start_remote. */
3469 rs
->starting_up
= 0;
3474 /* Save the reply for later. */
3475 wait_status
= alloca (strlen (rs
->buf
) + 1);
3476 strcpy (wait_status
, rs
->buf
);
3479 /* Fetch thread list. */
3480 target_find_new_threads ();
3482 /* Let the stub know that we want it to return the thread. */
3483 set_continue_thread (minus_one_ptid
);
3485 if (thread_count () == 0)
3487 /* Target has no concept of threads at all. GDB treats
3488 non-threaded target as single-threaded; add a main
3490 add_current_inferior_and_thread (wait_status
);
3494 /* We have thread information; select the thread the target
3495 says should be current. If we're reconnecting to a
3496 multi-threaded program, this will ideally be the thread
3497 that last reported an event before GDB disconnected. */
3498 inferior_ptid
= get_current_thread (wait_status
);
3499 if (ptid_equal (inferior_ptid
, null_ptid
))
3501 /* Odd... The target was able to list threads, but not
3502 tell us which thread was current (no "thread"
3503 register in T stop reply?). Just pick the first
3504 thread in the thread list then. */
3505 inferior_ptid
= thread_list
->ptid
;
3509 /* init_wait_for_inferior should be called before get_offsets in order
3510 to manage `inserted' flag in bp loc in a correct state.
3511 breakpoint_init_inferior, called from init_wait_for_inferior, set
3512 `inserted' flag to 0, while before breakpoint_re_set, called from
3513 start_remote, set `inserted' flag to 1. In the initialization of
3514 inferior, breakpoint_init_inferior should be called first, and then
3515 breakpoint_re_set can be called. If this order is broken, state of
3516 `inserted' flag is wrong, and cause some problems on breakpoint
3518 init_wait_for_inferior ();
3520 get_offsets (); /* Get text, data & bss offsets. */
3522 /* If we could not find a description using qXfer, and we know
3523 how to do it some other way, try again. This is not
3524 supported for non-stop; it could be, but it is tricky if
3525 there are no stopped threads when we connect. */
3526 if (remote_read_description_p (target
)
3527 && gdbarch_target_desc (target_gdbarch ()) == NULL
)
3529 target_clear_description ();
3530 target_find_description ();
3533 /* Use the previously fetched status. */
3534 gdb_assert (wait_status
!= NULL
);
3535 strcpy (rs
->buf
, wait_status
);
3536 rs
->cached_wait_status
= 1;
3539 start_remote (from_tty
); /* Initialize gdb process mechanisms. */
3543 /* Clear WFI global state. Do this before finding about new
3544 threads and inferiors, and setting the current inferior.
3545 Otherwise we would clear the proceed status of the current
3546 inferior when we want its stop_soon state to be preserved
3547 (see notice_new_inferior). */
3548 init_wait_for_inferior ();
3550 /* In non-stop, we will either get an "OK", meaning that there
3551 are no stopped threads at this time; or, a regular stop
3552 reply. In the latter case, there may be more than one thread
3553 stopped --- we pull them all out using the vStopped
3555 if (strcmp (rs
->buf
, "OK") != 0)
3557 struct notif_client
*notif
= ¬if_client_stop
;
3559 /* remote_notif_get_pending_replies acks this one, and gets
3561 rs
->notif_state
->pending_event
[notif_client_stop
.id
]
3562 = remote_notif_parse (notif
, rs
->buf
);
3563 remote_notif_get_pending_events (notif
);
3565 /* Make sure that threads that were stopped remain
3567 iterate_over_threads (set_stop_requested_callback
, NULL
);
3570 if (target_can_async_p ())
3571 target_async (inferior_event_handler
, 0);
3573 if (thread_count () == 0)
3576 error (_("The target is not running (try extended-remote?)"));
3578 /* We're connected, but not running. Drop out before we
3579 call start_remote. */
3580 rs
->starting_up
= 0;
3584 /* Let the stub know that we want it to return the thread. */
3586 /* Force the stub to choose a thread. */
3587 set_general_thread (null_ptid
);
3590 inferior_ptid
= remote_current_thread (minus_one_ptid
);
3591 if (ptid_equal (inferior_ptid
, minus_one_ptid
))
3592 error (_("remote didn't report the current thread in non-stop mode"));
3594 get_offsets (); /* Get text, data & bss offsets. */
3596 /* In non-stop mode, any cached wait status will be stored in
3597 the stop reply queue. */
3598 gdb_assert (wait_status
== NULL
);
3600 /* Report all signals during attach/startup. */
3601 remote_pass_signals (target
, 0, NULL
);
3604 /* If we connected to a live target, do some additional setup. */
3605 if (target_has_execution
)
3607 if (symfile_objfile
) /* No use without a symbol-file. */
3608 remote_check_symbols ();
3611 /* Possibly the target has been engaged in a trace run started
3612 previously; find out where things are at. */
3613 if (remote_get_trace_status (target
, current_trace_status ()) != -1)
3615 struct uploaded_tp
*uploaded_tps
= NULL
;
3617 if (current_trace_status ()->running
)
3618 printf_filtered (_("Trace is already running on the target.\n"));
3620 remote_upload_tracepoints (target
, &uploaded_tps
);
3622 merge_uploaded_tracepoints (&uploaded_tps
);
3625 /* The thread and inferior lists are now synchronized with the
3626 target, our symbols have been relocated, and we're merged the
3627 target's tracepoints with ours. We're done with basic start
3629 rs
->starting_up
= 0;
3631 /* If breakpoints are global, insert them now. */
3632 if (gdbarch_has_global_breakpoints (target_gdbarch ())
3633 && breakpoints_always_inserted_mode ())
3634 insert_breakpoints ();
3637 /* Open a connection to a remote debugger.
3638 NAME is the filename used for communication. */
3641 remote_open (char *name
, int from_tty
)
3643 remote_open_1 (name
, from_tty
, &remote_ops
, 0);
3646 /* Open a connection to a remote debugger using the extended
3647 remote gdb protocol. NAME is the filename used for communication. */
3650 extended_remote_open (char *name
, int from_tty
)
3652 remote_open_1 (name
, from_tty
, &extended_remote_ops
, 1 /*extended_p */);
3655 /* Generic code for opening a connection to a remote target. */
3658 init_all_packet_configs (void)
3662 for (i
= 0; i
< PACKET_MAX
; i
++)
3663 update_packet_config (&remote_protocol_packets
[i
]);
3666 /* Symbol look-up. */
3669 remote_check_symbols (void)
3671 struct remote_state
*rs
= get_remote_state ();
3672 char *msg
, *reply
, *tmp
;
3673 struct bound_minimal_symbol sym
;
3676 /* The remote side has no concept of inferiors that aren't running
3677 yet, it only knows about running processes. If we're connected
3678 but our current inferior is not running, we should not invite the
3679 remote target to request symbol lookups related to its
3680 (unrelated) current process. */
3681 if (!target_has_execution
)
3684 if (remote_protocol_packets
[PACKET_qSymbol
].support
== PACKET_DISABLE
)
3687 /* Make sure the remote is pointing at the right process. Note
3688 there's no way to select "no process". */
3689 set_general_process ();
3691 /* Allocate a message buffer. We can't reuse the input buffer in RS,
3692 because we need both at the same time. */
3693 msg
= alloca (get_remote_packet_size ());
3695 /* Invite target to request symbol lookups. */
3697 putpkt ("qSymbol::");
3698 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3699 packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_qSymbol
]);
3702 while (strncmp (reply
, "qSymbol:", 8) == 0)
3704 struct bound_minimal_symbol sym
;
3707 end
= hex2bin (tmp
, (gdb_byte
*) msg
, strlen (tmp
) / 2);
3709 sym
= lookup_minimal_symbol (msg
, NULL
, NULL
);
3710 if (sym
.minsym
== NULL
)
3711 xsnprintf (msg
, get_remote_packet_size (), "qSymbol::%s", &reply
[8]);
3714 int addr_size
= gdbarch_addr_bit (target_gdbarch ()) / 8;
3715 CORE_ADDR sym_addr
= BMSYMBOL_VALUE_ADDRESS (sym
);
3717 /* If this is a function address, return the start of code
3718 instead of any data function descriptor. */
3719 sym_addr
= gdbarch_convert_from_func_ptr_addr (target_gdbarch (),
3723 xsnprintf (msg
, get_remote_packet_size (), "qSymbol:%s:%s",
3724 phex_nz (sym_addr
, addr_size
), &reply
[8]);
3728 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3733 static struct serial
*
3734 remote_serial_open (char *name
)
3736 static int udp_warning
= 0;
3738 /* FIXME: Parsing NAME here is a hack. But we want to warn here instead
3739 of in ser-tcp.c, because it is the remote protocol assuming that the
3740 serial connection is reliable and not the serial connection promising
3742 if (!udp_warning
&& strncmp (name
, "udp:", 4) == 0)
3744 warning (_("The remote protocol may be unreliable over UDP.\n"
3745 "Some events may be lost, rendering further debugging "
3750 return serial_open (name
);
3753 /* Inform the target of our permission settings. The permission flags
3754 work without this, but if the target knows the settings, it can do
3755 a couple things. First, it can add its own check, to catch cases
3756 that somehow manage to get by the permissions checks in target
3757 methods. Second, if the target is wired to disallow particular
3758 settings (for instance, a system in the field that is not set up to
3759 be able to stop at a breakpoint), it can object to any unavailable
3763 remote_set_permissions (struct target_ops
*self
)
3765 struct remote_state
*rs
= get_remote_state ();
3767 xsnprintf (rs
->buf
, get_remote_packet_size (), "QAllow:"
3768 "WriteReg:%x;WriteMem:%x;"
3769 "InsertBreak:%x;InsertTrace:%x;"
3770 "InsertFastTrace:%x;Stop:%x",
3771 may_write_registers
, may_write_memory
,
3772 may_insert_breakpoints
, may_insert_tracepoints
,
3773 may_insert_fast_tracepoints
, may_stop
);
3775 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3777 /* If the target didn't like the packet, warn the user. Do not try
3778 to undo the user's settings, that would just be maddening. */
3779 if (strcmp (rs
->buf
, "OK") != 0)
3780 warning (_("Remote refused setting permissions with: %s"), rs
->buf
);
3783 /* This type describes each known response to the qSupported
3785 struct protocol_feature
3787 /* The name of this protocol feature. */
3790 /* The default for this protocol feature. */
3791 enum packet_support default_support
;
3793 /* The function to call when this feature is reported, or after
3794 qSupported processing if the feature is not supported.
3795 The first argument points to this structure. The second
3796 argument indicates whether the packet requested support be
3797 enabled, disabled, or probed (or the default, if this function
3798 is being called at the end of processing and this feature was
3799 not reported). The third argument may be NULL; if not NULL, it
3800 is a NUL-terminated string taken from the packet following
3801 this feature's name and an equals sign. */
3802 void (*func
) (const struct protocol_feature
*, enum packet_support
,
3805 /* The corresponding packet for this feature. Only used if
3806 FUNC is remote_supported_packet. */
3811 remote_supported_packet (const struct protocol_feature
*feature
,
3812 enum packet_support support
,
3813 const char *argument
)
3817 warning (_("Remote qSupported response supplied an unexpected value for"
3818 " \"%s\"."), feature
->name
);
3822 if (remote_protocol_packets
[feature
->packet
].support
3823 == PACKET_SUPPORT_UNKNOWN
)
3824 remote_protocol_packets
[feature
->packet
].support
= support
;
3828 remote_packet_size (const struct protocol_feature
*feature
,
3829 enum packet_support support
, const char *value
)
3831 struct remote_state
*rs
= get_remote_state ();
3836 if (support
!= PACKET_ENABLE
)
3839 if (value
== NULL
|| *value
== '\0')
3841 warning (_("Remote target reported \"%s\" without a size."),
3847 packet_size
= strtol (value
, &value_end
, 16);
3848 if (errno
!= 0 || *value_end
!= '\0' || packet_size
< 0)
3850 warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."),
3851 feature
->name
, value
);
3855 if (packet_size
> MAX_REMOTE_PACKET_SIZE
)
3857 warning (_("limiting remote suggested packet size (%d bytes) to %d"),
3858 packet_size
, MAX_REMOTE_PACKET_SIZE
);
3859 packet_size
= MAX_REMOTE_PACKET_SIZE
;
3862 /* Record the new maximum packet size. */
3863 rs
->explicit_packet_size
= packet_size
;
3867 remote_multi_process_feature (const struct protocol_feature
*feature
,
3868 enum packet_support support
, const char *value
)
3870 struct remote_state
*rs
= get_remote_state ();
3872 rs
->multi_process_aware
= (support
== PACKET_ENABLE
);
3876 remote_non_stop_feature (const struct protocol_feature
*feature
,
3877 enum packet_support support
, const char *value
)
3879 struct remote_state
*rs
= get_remote_state ();
3881 rs
->non_stop_aware
= (support
== PACKET_ENABLE
);
3885 remote_cond_tracepoint_feature (const struct protocol_feature
*feature
,
3886 enum packet_support support
,
3889 struct remote_state
*rs
= get_remote_state ();
3891 rs
->cond_tracepoints
= (support
== PACKET_ENABLE
);
3895 remote_cond_breakpoint_feature (const struct protocol_feature
*feature
,
3896 enum packet_support support
,
3899 struct remote_state
*rs
= get_remote_state ();
3901 rs
->cond_breakpoints
= (support
== PACKET_ENABLE
);
3905 remote_breakpoint_commands_feature (const struct protocol_feature
*feature
,
3906 enum packet_support support
,
3909 struct remote_state
*rs
= get_remote_state ();
3911 rs
->breakpoint_commands
= (support
== PACKET_ENABLE
);
3915 remote_fast_tracepoint_feature (const struct protocol_feature
*feature
,
3916 enum packet_support support
,
3919 struct remote_state
*rs
= get_remote_state ();
3921 rs
->fast_tracepoints
= (support
== PACKET_ENABLE
);
3925 remote_static_tracepoint_feature (const struct protocol_feature
*feature
,
3926 enum packet_support support
,
3929 struct remote_state
*rs
= get_remote_state ();
3931 rs
->static_tracepoints
= (support
== PACKET_ENABLE
);
3935 remote_install_in_trace_feature (const struct protocol_feature
*feature
,
3936 enum packet_support support
,
3939 struct remote_state
*rs
= get_remote_state ();
3941 rs
->install_in_trace
= (support
== PACKET_ENABLE
);
3945 remote_disconnected_tracing_feature (const struct protocol_feature
*feature
,
3946 enum packet_support support
,
3949 struct remote_state
*rs
= get_remote_state ();
3951 rs
->disconnected_tracing
= (support
== PACKET_ENABLE
);
3955 remote_enable_disable_tracepoint_feature (const struct protocol_feature
*feature
,
3956 enum packet_support support
,
3959 struct remote_state
*rs
= get_remote_state ();
3961 rs
->enable_disable_tracepoints
= (support
== PACKET_ENABLE
);
3965 remote_string_tracing_feature (const struct protocol_feature
*feature
,
3966 enum packet_support support
,
3969 struct remote_state
*rs
= get_remote_state ();
3971 rs
->string_tracing
= (support
== PACKET_ENABLE
);
3975 remote_augmented_libraries_svr4_read_feature
3976 (const struct protocol_feature
*feature
,
3977 enum packet_support support
, const char *value
)
3979 struct remote_state
*rs
= get_remote_state ();
3981 rs
->augmented_libraries_svr4_read
= (support
== PACKET_ENABLE
);
3984 static const struct protocol_feature remote_protocol_features
[] = {
3985 { "PacketSize", PACKET_DISABLE
, remote_packet_size
, -1 },
3986 { "qXfer:auxv:read", PACKET_DISABLE
, remote_supported_packet
,
3987 PACKET_qXfer_auxv
},
3988 { "qXfer:features:read", PACKET_DISABLE
, remote_supported_packet
,
3989 PACKET_qXfer_features
},
3990 { "qXfer:libraries:read", PACKET_DISABLE
, remote_supported_packet
,
3991 PACKET_qXfer_libraries
},
3992 { "qXfer:libraries-svr4:read", PACKET_DISABLE
, remote_supported_packet
,
3993 PACKET_qXfer_libraries_svr4
},
3994 { "augmented-libraries-svr4-read", PACKET_DISABLE
,
3995 remote_augmented_libraries_svr4_read_feature
, -1 },
3996 { "qXfer:memory-map:read", PACKET_DISABLE
, remote_supported_packet
,
3997 PACKET_qXfer_memory_map
},
3998 { "qXfer:spu:read", PACKET_DISABLE
, remote_supported_packet
,
3999 PACKET_qXfer_spu_read
},
4000 { "qXfer:spu:write", PACKET_DISABLE
, remote_supported_packet
,
4001 PACKET_qXfer_spu_write
},
4002 { "qXfer:osdata:read", PACKET_DISABLE
, remote_supported_packet
,
4003 PACKET_qXfer_osdata
},
4004 { "qXfer:threads:read", PACKET_DISABLE
, remote_supported_packet
,
4005 PACKET_qXfer_threads
},
4006 { "qXfer:traceframe-info:read", PACKET_DISABLE
, remote_supported_packet
,
4007 PACKET_qXfer_traceframe_info
},
4008 { "QPassSignals", PACKET_DISABLE
, remote_supported_packet
,
4009 PACKET_QPassSignals
},
4010 { "QProgramSignals", PACKET_DISABLE
, remote_supported_packet
,
4011 PACKET_QProgramSignals
},
4012 { "QStartNoAckMode", PACKET_DISABLE
, remote_supported_packet
,
4013 PACKET_QStartNoAckMode
},
4014 { "multiprocess", PACKET_DISABLE
, remote_multi_process_feature
, -1 },
4015 { "QNonStop", PACKET_DISABLE
, remote_non_stop_feature
, -1 },
4016 { "qXfer:siginfo:read", PACKET_DISABLE
, remote_supported_packet
,
4017 PACKET_qXfer_siginfo_read
},
4018 { "qXfer:siginfo:write", PACKET_DISABLE
, remote_supported_packet
,
4019 PACKET_qXfer_siginfo_write
},
4020 { "ConditionalTracepoints", PACKET_DISABLE
, remote_cond_tracepoint_feature
,
4021 PACKET_ConditionalTracepoints
},
4022 { "ConditionalBreakpoints", PACKET_DISABLE
, remote_cond_breakpoint_feature
,
4023 PACKET_ConditionalBreakpoints
},
4024 { "BreakpointCommands", PACKET_DISABLE
, remote_breakpoint_commands_feature
,
4025 PACKET_BreakpointCommands
},
4026 { "FastTracepoints", PACKET_DISABLE
, remote_fast_tracepoint_feature
,
4027 PACKET_FastTracepoints
},
4028 { "StaticTracepoints", PACKET_DISABLE
, remote_static_tracepoint_feature
,
4029 PACKET_StaticTracepoints
},
4030 {"InstallInTrace", PACKET_DISABLE
, remote_install_in_trace_feature
,
4031 PACKET_InstallInTrace
},
4032 { "DisconnectedTracing", PACKET_DISABLE
, remote_disconnected_tracing_feature
,
4034 { "ReverseContinue", PACKET_DISABLE
, remote_supported_packet
,
4036 { "ReverseStep", PACKET_DISABLE
, remote_supported_packet
,
4038 { "TracepointSource", PACKET_DISABLE
, remote_supported_packet
,
4039 PACKET_TracepointSource
},
4040 { "QAllow", PACKET_DISABLE
, remote_supported_packet
,
4042 { "EnableDisableTracepoints", PACKET_DISABLE
,
4043 remote_enable_disable_tracepoint_feature
, -1 },
4044 { "qXfer:fdpic:read", PACKET_DISABLE
, remote_supported_packet
,
4045 PACKET_qXfer_fdpic
},
4046 { "qXfer:uib:read", PACKET_DISABLE
, remote_supported_packet
,
4048 { "QDisableRandomization", PACKET_DISABLE
, remote_supported_packet
,
4049 PACKET_QDisableRandomization
},
4050 { "QAgent", PACKET_DISABLE
, remote_supported_packet
, PACKET_QAgent
},
4051 { "QTBuffer:size", PACKET_DISABLE
,
4052 remote_supported_packet
, PACKET_QTBuffer_size
},
4053 { "tracenz", PACKET_DISABLE
,
4054 remote_string_tracing_feature
, -1 },
4055 { "Qbtrace:off", PACKET_DISABLE
, remote_supported_packet
, PACKET_Qbtrace_off
},
4056 { "Qbtrace:bts", PACKET_DISABLE
, remote_supported_packet
, PACKET_Qbtrace_bts
},
4057 { "qXfer:btrace:read", PACKET_DISABLE
, remote_supported_packet
,
4058 PACKET_qXfer_btrace
}
4061 static char *remote_support_xml
;
4063 /* Register string appended to "xmlRegisters=" in qSupported query. */
4066 register_remote_support_xml (const char *xml
)
4068 #if defined(HAVE_LIBEXPAT)
4069 if (remote_support_xml
== NULL
)
4070 remote_support_xml
= concat ("xmlRegisters=", xml
, (char *) NULL
);
4073 char *copy
= xstrdup (remote_support_xml
+ 13);
4074 char *p
= strtok (copy
, ",");
4078 if (strcmp (p
, xml
) == 0)
4085 while ((p
= strtok (NULL
, ",")) != NULL
);
4088 remote_support_xml
= reconcat (remote_support_xml
,
4089 remote_support_xml
, ",", xml
,
4096 remote_query_supported_append (char *msg
, const char *append
)
4099 return reconcat (msg
, msg
, ";", append
, (char *) NULL
);
4101 return xstrdup (append
);
4105 remote_query_supported (void)
4107 struct remote_state
*rs
= get_remote_state ();
4110 unsigned char seen
[ARRAY_SIZE (remote_protocol_features
)];
4112 /* The packet support flags are handled differently for this packet
4113 than for most others. We treat an error, a disabled packet, and
4114 an empty response identically: any features which must be reported
4115 to be used will be automatically disabled. An empty buffer
4116 accomplishes this, since that is also the representation for a list
4117 containing no features. */
4120 if (remote_protocol_packets
[PACKET_qSupported
].support
!= PACKET_DISABLE
)
4123 struct cleanup
*old_chain
= make_cleanup (free_current_contents
, &q
);
4125 q
= remote_query_supported_append (q
, "multiprocess+");
4127 if (remote_support_xml
)
4128 q
= remote_query_supported_append (q
, remote_support_xml
);
4130 q
= remote_query_supported_append (q
, "qRelocInsn+");
4132 q
= reconcat (q
, "qSupported:", q
, (char *) NULL
);
4135 do_cleanups (old_chain
);
4137 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4139 /* If an error occured, warn, but do not return - just reset the
4140 buffer to empty and go on to disable features. */
4141 if (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_qSupported
])
4144 warning (_("Remote failure reply: %s"), rs
->buf
);
4149 memset (seen
, 0, sizeof (seen
));
4154 enum packet_support is_supported
;
4155 char *p
, *end
, *name_end
, *value
;
4157 /* First separate out this item from the rest of the packet. If
4158 there's another item after this, we overwrite the separator
4159 (terminated strings are much easier to work with). */
4161 end
= strchr (p
, ';');
4164 end
= p
+ strlen (p
);
4174 warning (_("empty item in \"qSupported\" response"));
4179 name_end
= strchr (p
, '=');
4182 /* This is a name=value entry. */
4183 is_supported
= PACKET_ENABLE
;
4184 value
= name_end
+ 1;
4193 is_supported
= PACKET_ENABLE
;
4197 is_supported
= PACKET_DISABLE
;
4201 is_supported
= PACKET_SUPPORT_UNKNOWN
;
4205 warning (_("unrecognized item \"%s\" "
4206 "in \"qSupported\" response"), p
);
4212 for (i
= 0; i
< ARRAY_SIZE (remote_protocol_features
); i
++)
4213 if (strcmp (remote_protocol_features
[i
].name
, p
) == 0)
4215 const struct protocol_feature
*feature
;
4218 feature
= &remote_protocol_features
[i
];
4219 feature
->func (feature
, is_supported
, value
);
4224 /* If we increased the packet size, make sure to increase the global
4225 buffer size also. We delay this until after parsing the entire
4226 qSupported packet, because this is the same buffer we were
4228 if (rs
->buf_size
< rs
->explicit_packet_size
)
4230 rs
->buf_size
= rs
->explicit_packet_size
;
4231 rs
->buf
= xrealloc (rs
->buf
, rs
->buf_size
);
4234 /* Handle the defaults for unmentioned features. */
4235 for (i
= 0; i
< ARRAY_SIZE (remote_protocol_features
); i
++)
4238 const struct protocol_feature
*feature
;
4240 feature
= &remote_protocol_features
[i
];
4241 feature
->func (feature
, feature
->default_support
, NULL
);
4245 /* Remove any of the remote.c targets from target stack. Upper targets depend
4246 on it so remove them first. */
4249 remote_unpush_target (void)
4251 pop_all_targets_above (process_stratum
- 1);
4255 remote_open_1 (char *name
, int from_tty
,
4256 struct target_ops
*target
, int extended_p
)
4258 struct remote_state
*rs
= get_remote_state ();
4261 error (_("To open a remote debug connection, you need to specify what\n"
4262 "serial device is attached to the remote system\n"
4263 "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."));
4265 /* See FIXME above. */
4266 if (!target_async_permitted
)
4267 wait_forever_enabled_p
= 1;
4269 /* If we're connected to a running target, target_preopen will kill it.
4270 Ask this question first, before target_preopen has a chance to kill
4272 if (rs
->remote_desc
!= NULL
&& !have_inferiors ())
4275 && !query (_("Already connected to a remote target. Disconnect? ")))
4276 error (_("Still connected."));
4279 /* Here the possibly existing remote target gets unpushed. */
4280 target_preopen (from_tty
);
4282 /* Make sure we send the passed signals list the next time we resume. */
4283 xfree (rs
->last_pass_packet
);
4284 rs
->last_pass_packet
= NULL
;
4286 /* Make sure we send the program signals list the next time we
4288 xfree (rs
->last_program_signals_packet
);
4289 rs
->last_program_signals_packet
= NULL
;
4291 remote_fileio_reset ();
4292 reopen_exec_file ();
4295 rs
->remote_desc
= remote_serial_open (name
);
4296 if (!rs
->remote_desc
)
4297 perror_with_name (name
);
4299 if (baud_rate
!= -1)
4301 if (serial_setbaudrate (rs
->remote_desc
, baud_rate
))
4303 /* The requested speed could not be set. Error out to
4304 top level after closing remote_desc. Take care to
4305 set remote_desc to NULL to avoid closing remote_desc
4307 serial_close (rs
->remote_desc
);
4308 rs
->remote_desc
= NULL
;
4309 perror_with_name (name
);
4313 serial_raw (rs
->remote_desc
);
4315 /* If there is something sitting in the buffer we might take it as a
4316 response to a command, which would be bad. */
4317 serial_flush_input (rs
->remote_desc
);
4321 puts_filtered ("Remote debugging using ");
4322 puts_filtered (name
);
4323 puts_filtered ("\n");
4325 push_target (target
); /* Switch to using remote target now. */
4327 /* Register extra event sources in the event loop. */
4328 remote_async_inferior_event_token
4329 = create_async_event_handler (remote_async_inferior_event_handler
,
4331 rs
->notif_state
= remote_notif_state_allocate ();
4333 /* Reset the target state; these things will be queried either by
4334 remote_query_supported or as they are needed. */
4335 init_all_packet_configs ();
4336 rs
->cached_wait_status
= 0;
4337 rs
->explicit_packet_size
= 0;
4339 rs
->multi_process_aware
= 0;
4340 rs
->extended
= extended_p
;
4341 rs
->non_stop_aware
= 0;
4342 rs
->waiting_for_stop_reply
= 0;
4343 rs
->ctrlc_pending_p
= 0;
4345 rs
->general_thread
= not_sent_ptid
;
4346 rs
->continue_thread
= not_sent_ptid
;
4347 rs
->remote_traceframe_number
= -1;
4349 /* Probe for ability to use "ThreadInfo" query, as required. */
4350 rs
->use_threadinfo_query
= 1;
4351 rs
->use_threadextra_query
= 1;
4353 if (target_async_permitted
)
4355 /* With this target we start out by owning the terminal. */
4356 remote_async_terminal_ours_p
= 1;
4358 /* FIXME: cagney/1999-09-23: During the initial connection it is
4359 assumed that the target is already ready and able to respond to
4360 requests. Unfortunately remote_start_remote() eventually calls
4361 wait_for_inferior() with no timeout. wait_forever_enabled_p gets
4362 around this. Eventually a mechanism that allows
4363 wait_for_inferior() to expect/get timeouts will be
4365 wait_forever_enabled_p
= 0;
4368 /* First delete any symbols previously loaded from shared libraries. */
4369 no_shared_libraries (NULL
, 0);
4372 init_thread_list ();
4374 /* Start the remote connection. If error() or QUIT, discard this
4375 target (we'd otherwise be in an inconsistent state) and then
4376 propogate the error on up the exception chain. This ensures that
4377 the caller doesn't stumble along blindly assuming that the
4378 function succeeded. The CLI doesn't have this problem but other
4379 UI's, such as MI do.
4381 FIXME: cagney/2002-05-19: Instead of re-throwing the exception,
4382 this function should return an error indication letting the
4383 caller restore the previous state. Unfortunately the command
4384 ``target remote'' is directly wired to this function making that
4385 impossible. On a positive note, the CLI side of this problem has
4386 been fixed - the function set_cmd_context() makes it possible for
4387 all the ``target ....'' commands to share a common callback
4388 function. See cli-dump.c. */
4390 volatile struct gdb_exception ex
;
4392 TRY_CATCH (ex
, RETURN_MASK_ALL
)
4394 remote_start_remote (from_tty
, target
, extended_p
);
4398 /* Pop the partially set up target - unless something else did
4399 already before throwing the exception. */
4400 if (rs
->remote_desc
!= NULL
)
4401 remote_unpush_target ();
4402 if (target_async_permitted
)
4403 wait_forever_enabled_p
= 1;
4404 throw_exception (ex
);
4408 if (target_async_permitted
)
4409 wait_forever_enabled_p
= 1;
4412 /* This takes a program previously attached to and detaches it. After
4413 this is done, GDB can be used to debug some other program. We
4414 better not have left any breakpoints in the target program or it'll
4415 die when it hits one. */
4418 remote_detach_1 (const char *args
, int from_tty
, int extended
)
4420 int pid
= ptid_get_pid (inferior_ptid
);
4421 struct remote_state
*rs
= get_remote_state ();
4424 error (_("Argument given to \"detach\" when remotely debugging."));
4426 if (!target_has_execution
)
4427 error (_("No process to detach from."));
4431 char *exec_file
= get_exec_file (0);
4432 if (exec_file
== NULL
)
4434 printf_unfiltered (_("Detaching from program: %s, %s\n"), exec_file
,
4435 target_pid_to_str (pid_to_ptid (pid
)));
4436 gdb_flush (gdb_stdout
);
4439 /* Tell the remote target to detach. */
4440 if (remote_multi_process_p (rs
))
4441 xsnprintf (rs
->buf
, get_remote_packet_size (), "D;%x", pid
);
4443 strcpy (rs
->buf
, "D");
4446 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4448 if (rs
->buf
[0] == 'O' && rs
->buf
[1] == 'K')
4450 else if (rs
->buf
[0] == '\0')
4451 error (_("Remote doesn't know how to detach"));
4453 error (_("Can't detach process."));
4455 if (from_tty
&& !extended
)
4456 puts_filtered (_("Ending remote debugging.\n"));
4458 target_mourn_inferior ();
4462 remote_detach (struct target_ops
*ops
, const char *args
, int from_tty
)
4464 remote_detach_1 (args
, from_tty
, 0);
4468 extended_remote_detach (struct target_ops
*ops
, const char *args
, int from_tty
)
4470 remote_detach_1 (args
, from_tty
, 1);
4473 /* Same as remote_detach, but don't send the "D" packet; just disconnect. */
4476 remote_disconnect (struct target_ops
*target
, char *args
, int from_tty
)
4479 error (_("Argument given to \"disconnect\" when remotely debugging."));
4481 /* Make sure we unpush even the extended remote targets; mourn
4482 won't do it. So call remote_mourn_1 directly instead of
4483 target_mourn_inferior. */
4484 remote_mourn_1 (target
);
4487 puts_filtered ("Ending remote debugging.\n");
4490 /* Attach to the process specified by ARGS. If FROM_TTY is non-zero,
4491 be chatty about it. */
4494 extended_remote_attach_1 (struct target_ops
*target
, char *args
, int from_tty
)
4496 struct remote_state
*rs
= get_remote_state ();
4498 char *wait_status
= NULL
;
4500 pid
= parse_pid_to_attach (args
);
4502 /* Remote PID can be freely equal to getpid, do not check it here the same
4503 way as in other targets. */
4505 if (remote_protocol_packets
[PACKET_vAttach
].support
== PACKET_DISABLE
)
4506 error (_("This target does not support attaching to a process"));
4510 char *exec_file
= get_exec_file (0);
4513 printf_unfiltered (_("Attaching to program: %s, %s\n"), exec_file
,
4514 target_pid_to_str (pid_to_ptid (pid
)));
4516 printf_unfiltered (_("Attaching to %s\n"),
4517 target_pid_to_str (pid_to_ptid (pid
)));
4519 gdb_flush (gdb_stdout
);
4522 xsnprintf (rs
->buf
, get_remote_packet_size (), "vAttach;%x", pid
);
4524 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4526 if (packet_ok (rs
->buf
,
4527 &remote_protocol_packets
[PACKET_vAttach
]) == PACKET_OK
)
4531 /* Save the reply for later. */
4532 wait_status
= alloca (strlen (rs
->buf
) + 1);
4533 strcpy (wait_status
, rs
->buf
);
4535 else if (strcmp (rs
->buf
, "OK") != 0)
4536 error (_("Attaching to %s failed with: %s"),
4537 target_pid_to_str (pid_to_ptid (pid
)),
4540 else if (remote_protocol_packets
[PACKET_vAttach
].support
== PACKET_DISABLE
)
4541 error (_("This target does not support attaching to a process"));
4543 error (_("Attaching to %s failed"),
4544 target_pid_to_str (pid_to_ptid (pid
)));
4546 set_current_inferior (remote_add_inferior (0, pid
, 1));
4548 inferior_ptid
= pid_to_ptid (pid
);
4552 struct thread_info
*thread
;
4554 /* Get list of threads. */
4555 remote_threads_info (target
);
4557 thread
= first_thread_of_process (pid
);
4559 inferior_ptid
= thread
->ptid
;
4561 inferior_ptid
= pid_to_ptid (pid
);
4563 /* Invalidate our notion of the remote current thread. */
4564 record_currthread (rs
, minus_one_ptid
);
4568 /* Now, if we have thread information, update inferior_ptid. */
4569 inferior_ptid
= remote_current_thread (inferior_ptid
);
4571 /* Add the main thread to the thread list. */
4572 add_thread_silent (inferior_ptid
);
4575 /* Next, if the target can specify a description, read it. We do
4576 this before anything involving memory or registers. */
4577 target_find_description ();
4581 /* Use the previously fetched status. */
4582 gdb_assert (wait_status
!= NULL
);
4584 if (target_can_async_p ())
4586 struct notif_event
*reply
4587 = remote_notif_parse (¬if_client_stop
, wait_status
);
4589 push_stop_reply ((struct stop_reply
*) reply
);
4591 target_async (inferior_event_handler
, 0);
4595 gdb_assert (wait_status
!= NULL
);
4596 strcpy (rs
->buf
, wait_status
);
4597 rs
->cached_wait_status
= 1;
4601 gdb_assert (wait_status
== NULL
);
4605 extended_remote_attach (struct target_ops
*ops
, char *args
, int from_tty
)
4607 extended_remote_attach_1 (ops
, args
, from_tty
);
4611 /* Check for the availability of vCont. This function should also check
4615 remote_vcont_probe (struct remote_state
*rs
)
4619 strcpy (rs
->buf
, "vCont?");
4621 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4624 /* Make sure that the features we assume are supported. */
4625 if (strncmp (buf
, "vCont", 5) == 0)
4628 int support_s
, support_S
, support_c
, support_C
;
4634 rs
->supports_vCont
.t
= 0;
4635 rs
->supports_vCont
.r
= 0;
4636 while (p
&& *p
== ';')
4639 if (*p
== 's' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4641 else if (*p
== 'S' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4643 else if (*p
== 'c' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4645 else if (*p
== 'C' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4647 else if (*p
== 't' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4648 rs
->supports_vCont
.t
= 1;
4649 else if (*p
== 'r' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4650 rs
->supports_vCont
.r
= 1;
4652 p
= strchr (p
, ';');
4655 /* If s, S, c, and C are not all supported, we can't use vCont. Clearing
4656 BUF will make packet_ok disable the packet. */
4657 if (!support_s
|| !support_S
|| !support_c
|| !support_C
)
4661 packet_ok (buf
, &remote_protocol_packets
[PACKET_vCont
]);
4664 /* Helper function for building "vCont" resumptions. Write a
4665 resumption to P. ENDP points to one-passed-the-end of the buffer
4666 we're allowed to write to. Returns BUF+CHARACTERS_WRITTEN. The
4667 thread to be resumed is PTID; STEP and SIGGNAL indicate whether the
4668 resumed thread should be single-stepped and/or signalled. If PTID
4669 equals minus_one_ptid, then all threads are resumed; if PTID
4670 represents a process, then all threads of the process are resumed;
4671 the thread to be stepped and/or signalled is given in the global
4675 append_resumption (char *p
, char *endp
,
4676 ptid_t ptid
, int step
, enum gdb_signal siggnal
)
4678 struct remote_state
*rs
= get_remote_state ();
4680 if (step
&& siggnal
!= GDB_SIGNAL_0
)
4681 p
+= xsnprintf (p
, endp
- p
, ";S%02x", siggnal
);
4683 /* GDB is willing to range step. */
4684 && use_range_stepping
4685 /* Target supports range stepping. */
4686 && rs
->supports_vCont
.r
4687 /* We don't currently support range stepping multiple
4688 threads with a wildcard (though the protocol allows it,
4689 so stubs shouldn't make an active effort to forbid
4691 && !(remote_multi_process_p (rs
) && ptid_is_pid (ptid
)))
4693 struct thread_info
*tp
;
4695 if (ptid_equal (ptid
, minus_one_ptid
))
4697 /* If we don't know about the target thread's tid, then
4698 we're resuming magic_null_ptid (see caller). */
4699 tp
= find_thread_ptid (magic_null_ptid
);
4702 tp
= find_thread_ptid (ptid
);
4703 gdb_assert (tp
!= NULL
);
4705 if (tp
->control
.may_range_step
)
4707 int addr_size
= gdbarch_addr_bit (target_gdbarch ()) / 8;
4709 p
+= xsnprintf (p
, endp
- p
, ";r%s,%s",
4710 phex_nz (tp
->control
.step_range_start
,
4712 phex_nz (tp
->control
.step_range_end
,
4716 p
+= xsnprintf (p
, endp
- p
, ";s");
4719 p
+= xsnprintf (p
, endp
- p
, ";s");
4720 else if (siggnal
!= GDB_SIGNAL_0
)
4721 p
+= xsnprintf (p
, endp
- p
, ";C%02x", siggnal
);
4723 p
+= xsnprintf (p
, endp
- p
, ";c");
4725 if (remote_multi_process_p (rs
) && ptid_is_pid (ptid
))
4729 /* All (-1) threads of process. */
4730 nptid
= ptid_build (ptid_get_pid (ptid
), -1, 0);
4732 p
+= xsnprintf (p
, endp
- p
, ":");
4733 p
= write_ptid (p
, endp
, nptid
);
4735 else if (!ptid_equal (ptid
, minus_one_ptid
))
4737 p
+= xsnprintf (p
, endp
- p
, ":");
4738 p
= write_ptid (p
, endp
, ptid
);
4744 /* Append a vCont continue-with-signal action for threads that have a
4745 non-zero stop signal. */
4748 append_pending_thread_resumptions (char *p
, char *endp
, ptid_t ptid
)
4750 struct thread_info
*thread
;
4752 ALL_THREADS (thread
)
4753 if (ptid_match (thread
->ptid
, ptid
)
4754 && !ptid_equal (inferior_ptid
, thread
->ptid
)
4755 && thread
->suspend
.stop_signal
!= GDB_SIGNAL_0
4756 && signal_pass_state (thread
->suspend
.stop_signal
))
4758 p
= append_resumption (p
, endp
, thread
->ptid
,
4759 0, thread
->suspend
.stop_signal
);
4760 thread
->suspend
.stop_signal
= GDB_SIGNAL_0
;
4766 /* Resume the remote inferior by using a "vCont" packet. The thread
4767 to be resumed is PTID; STEP and SIGGNAL indicate whether the
4768 resumed thread should be single-stepped and/or signalled. If PTID
4769 equals minus_one_ptid, then all threads are resumed; the thread to
4770 be stepped and/or signalled is given in the global INFERIOR_PTID.
4771 This function returns non-zero iff it resumes the inferior.
4773 This function issues a strict subset of all possible vCont commands at the
4777 remote_vcont_resume (ptid_t ptid
, int step
, enum gdb_signal siggnal
)
4779 struct remote_state
*rs
= get_remote_state ();
4783 if (remote_protocol_packets
[PACKET_vCont
].support
== PACKET_SUPPORT_UNKNOWN
)
4784 remote_vcont_probe (rs
);
4786 if (remote_protocol_packets
[PACKET_vCont
].support
== PACKET_DISABLE
)
4790 endp
= rs
->buf
+ get_remote_packet_size ();
4792 /* If we could generate a wider range of packets, we'd have to worry
4793 about overflowing BUF. Should there be a generic
4794 "multi-part-packet" packet? */
4796 p
+= xsnprintf (p
, endp
- p
, "vCont");
4798 if (ptid_equal (ptid
, magic_null_ptid
))
4800 /* MAGIC_NULL_PTID means that we don't have any active threads,
4801 so we don't have any TID numbers the inferior will
4802 understand. Make sure to only send forms that do not specify
4804 append_resumption (p
, endp
, minus_one_ptid
, step
, siggnal
);
4806 else if (ptid_equal (ptid
, minus_one_ptid
) || ptid_is_pid (ptid
))
4808 /* Resume all threads (of all processes, or of a single
4809 process), with preference for INFERIOR_PTID. This assumes
4810 inferior_ptid belongs to the set of all threads we are about
4812 if (step
|| siggnal
!= GDB_SIGNAL_0
)
4814 /* Step inferior_ptid, with or without signal. */
4815 p
= append_resumption (p
, endp
, inferior_ptid
, step
, siggnal
);
4818 /* Also pass down any pending signaled resumption for other
4819 threads not the current. */
4820 p
= append_pending_thread_resumptions (p
, endp
, ptid
);
4822 /* And continue others without a signal. */
4823 append_resumption (p
, endp
, ptid
, /*step=*/ 0, GDB_SIGNAL_0
);
4827 /* Scheduler locking; resume only PTID. */
4828 append_resumption (p
, endp
, ptid
, step
, siggnal
);
4831 gdb_assert (strlen (rs
->buf
) < get_remote_packet_size ());
4836 /* In non-stop, the stub replies to vCont with "OK". The stop
4837 reply will be reported asynchronously by means of a `%Stop'
4839 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4840 if (strcmp (rs
->buf
, "OK") != 0)
4841 error (_("Unexpected vCont reply in non-stop mode: %s"), rs
->buf
);
4847 /* Tell the remote machine to resume. */
4850 remote_resume (struct target_ops
*ops
,
4851 ptid_t ptid
, int step
, enum gdb_signal siggnal
)
4853 struct remote_state
*rs
= get_remote_state ();
4856 /* In all-stop, we can't mark REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN
4857 (explained in remote-notif.c:handle_notification) so
4858 remote_notif_process is not called. We need find a place where
4859 it is safe to start a 'vNotif' sequence. It is good to do it
4860 before resuming inferior, because inferior was stopped and no RSP
4861 traffic at that moment. */
4863 remote_notif_process (rs
->notif_state
, ¬if_client_stop
);
4865 rs
->last_sent_signal
= siggnal
;
4866 rs
->last_sent_step
= step
;
4868 /* The vCont packet doesn't need to specify threads via Hc. */
4869 /* No reverse support (yet) for vCont. */
4870 if (execution_direction
!= EXEC_REVERSE
)
4871 if (remote_vcont_resume (ptid
, step
, siggnal
))
4874 /* All other supported resume packets do use Hc, so set the continue
4876 if (ptid_equal (ptid
, minus_one_ptid
))
4877 set_continue_thread (any_thread_ptid
);
4879 set_continue_thread (ptid
);
4882 if (execution_direction
== EXEC_REVERSE
)
4884 /* We don't pass signals to the target in reverse exec mode. */
4885 if (info_verbose
&& siggnal
!= GDB_SIGNAL_0
)
4886 warning (_(" - Can't pass signal %d to target in reverse: ignored."),
4890 && remote_protocol_packets
[PACKET_bs
].support
== PACKET_DISABLE
)
4891 error (_("Remote reverse-step not supported."));
4893 && remote_protocol_packets
[PACKET_bc
].support
== PACKET_DISABLE
)
4894 error (_("Remote reverse-continue not supported."));
4896 strcpy (buf
, step
? "bs" : "bc");
4898 else if (siggnal
!= GDB_SIGNAL_0
)
4900 buf
[0] = step
? 'S' : 'C';
4901 buf
[1] = tohex (((int) siggnal
>> 4) & 0xf);
4902 buf
[2] = tohex (((int) siggnal
) & 0xf);
4906 strcpy (buf
, step
? "s" : "c");
4911 /* We are about to start executing the inferior, let's register it
4912 with the event loop. NOTE: this is the one place where all the
4913 execution commands end up. We could alternatively do this in each
4914 of the execution commands in infcmd.c. */
4915 /* FIXME: ezannoni 1999-09-28: We may need to move this out of here
4916 into infcmd.c in order to allow inferior function calls to work
4917 NOT asynchronously. */
4918 if (target_can_async_p ())
4919 target_async (inferior_event_handler
, 0);
4921 /* We've just told the target to resume. The remote server will
4922 wait for the inferior to stop, and then send a stop reply. In
4923 the mean time, we can't start another command/query ourselves
4924 because the stub wouldn't be ready to process it. This applies
4925 only to the base all-stop protocol, however. In non-stop (which
4926 only supports vCont), the stub replies with an "OK", and is
4927 immediate able to process further serial input. */
4929 rs
->waiting_for_stop_reply
= 1;
4933 /* Set up the signal handler for SIGINT, while the target is
4934 executing, ovewriting the 'regular' SIGINT signal handler. */
4936 async_initialize_sigint_signal_handler (void)
4938 signal (SIGINT
, async_handle_remote_sigint
);
4941 /* Signal handler for SIGINT, while the target is executing. */
4943 async_handle_remote_sigint (int sig
)
4945 signal (sig
, async_handle_remote_sigint_twice
);
4946 mark_async_signal_handler (async_sigint_remote_token
);
4949 /* Signal handler for SIGINT, installed after SIGINT has already been
4950 sent once. It will take effect the second time that the user sends
4953 async_handle_remote_sigint_twice (int sig
)
4955 signal (sig
, async_handle_remote_sigint
);
4956 mark_async_signal_handler (async_sigint_remote_twice_token
);
4959 /* Perform the real interruption of the target execution, in response
4962 async_remote_interrupt (gdb_client_data arg
)
4965 fprintf_unfiltered (gdb_stdlog
, "async_remote_interrupt called\n");
4967 target_stop (inferior_ptid
);
4970 /* Perform interrupt, if the first attempt did not succeed. Just give
4971 up on the target alltogether. */
4973 async_remote_interrupt_twice (gdb_client_data arg
)
4976 fprintf_unfiltered (gdb_stdlog
, "async_remote_interrupt_twice called\n");
4981 /* Reinstall the usual SIGINT handlers, after the target has
4984 async_cleanup_sigint_signal_handler (void *dummy
)
4986 signal (SIGINT
, handle_sigint
);
4989 /* Send ^C to target to halt it. Target will respond, and send us a
4991 static void (*ofunc
) (int);
4993 /* The command line interface's stop routine. This function is installed
4994 as a signal handler for SIGINT. The first time a user requests a
4995 stop, we call remote_stop to send a break or ^C. If there is no
4996 response from the target (it didn't stop when the user requested it),
4997 we ask the user if he'd like to detach from the target. */
4999 sync_remote_interrupt (int signo
)
5001 /* If this doesn't work, try more severe steps. */
5002 signal (signo
, sync_remote_interrupt_twice
);
5004 gdb_call_async_signal_handler (async_sigint_remote_token
, 1);
5007 /* The user typed ^C twice. */
5010 sync_remote_interrupt_twice (int signo
)
5012 signal (signo
, ofunc
);
5013 gdb_call_async_signal_handler (async_sigint_remote_twice_token
, 1);
5014 signal (signo
, sync_remote_interrupt
);
5017 /* Non-stop version of target_stop. Uses `vCont;t' to stop a remote
5018 thread, all threads of a remote process, or all threads of all
5022 remote_stop_ns (ptid_t ptid
)
5024 struct remote_state
*rs
= get_remote_state ();
5026 char *endp
= rs
->buf
+ get_remote_packet_size ();
5028 if (remote_protocol_packets
[PACKET_vCont
].support
== PACKET_SUPPORT_UNKNOWN
)
5029 remote_vcont_probe (rs
);
5031 if (!rs
->supports_vCont
.t
)
5032 error (_("Remote server does not support stopping threads"));
5034 if (ptid_equal (ptid
, minus_one_ptid
)
5035 || (!remote_multi_process_p (rs
) && ptid_is_pid (ptid
)))
5036 p
+= xsnprintf (p
, endp
- p
, "vCont;t");
5041 p
+= xsnprintf (p
, endp
- p
, "vCont;t:");
5043 if (ptid_is_pid (ptid
))
5044 /* All (-1) threads of process. */
5045 nptid
= ptid_build (ptid_get_pid (ptid
), -1, 0);
5048 /* Small optimization: if we already have a stop reply for
5049 this thread, no use in telling the stub we want this
5051 if (peek_stop_reply (ptid
))
5057 write_ptid (p
, endp
, nptid
);
5060 /* In non-stop, we get an immediate OK reply. The stop reply will
5061 come in asynchronously by notification. */
5063 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5064 if (strcmp (rs
->buf
, "OK") != 0)
5065 error (_("Stopping %s failed: %s"), target_pid_to_str (ptid
), rs
->buf
);
5068 /* All-stop version of target_stop. Sends a break or a ^C to stop the
5069 remote target. It is undefined which thread of which process
5070 reports the stop. */
5073 remote_stop_as (ptid_t ptid
)
5075 struct remote_state
*rs
= get_remote_state ();
5077 rs
->ctrlc_pending_p
= 1;
5079 /* If the inferior is stopped already, but the core didn't know
5080 about it yet, just ignore the request. The cached wait status
5081 will be collected in remote_wait. */
5082 if (rs
->cached_wait_status
)
5085 /* Send interrupt_sequence to remote target. */
5086 send_interrupt_sequence ();
5089 /* This is the generic stop called via the target vector. When a target
5090 interrupt is requested, either by the command line or the GUI, we
5091 will eventually end up here. */
5094 remote_stop (struct target_ops
*self
, ptid_t ptid
)
5097 fprintf_unfiltered (gdb_stdlog
, "remote_stop called\n");
5100 remote_stop_ns (ptid
);
5102 remote_stop_as (ptid
);
5105 /* Ask the user what to do when an interrupt is received. */
5108 interrupt_query (void)
5110 target_terminal_ours ();
5112 if (target_can_async_p ())
5114 signal (SIGINT
, handle_sigint
);
5119 if (query (_("Interrupted while waiting for the program.\n\
5120 Give up (and stop debugging it)? ")))
5122 remote_unpush_target ();
5127 target_terminal_inferior ();
5130 /* Enable/disable target terminal ownership. Most targets can use
5131 terminal groups to control terminal ownership. Remote targets are
5132 different in that explicit transfer of ownership to/from GDB/target
5136 remote_terminal_inferior (struct target_ops
*self
)
5138 if (!target_async_permitted
)
5139 /* Nothing to do. */
5142 /* FIXME: cagney/1999-09-27: Make calls to target_terminal_*()
5143 idempotent. The event-loop GDB talking to an asynchronous target
5144 with a synchronous command calls this function from both
5145 event-top.c and infrun.c/infcmd.c. Once GDB stops trying to
5146 transfer the terminal to the target when it shouldn't this guard
5148 if (!remote_async_terminal_ours_p
)
5150 delete_file_handler (input_fd
);
5151 remote_async_terminal_ours_p
= 0;
5152 async_initialize_sigint_signal_handler ();
5153 /* NOTE: At this point we could also register our selves as the
5154 recipient of all input. Any characters typed could then be
5155 passed on down to the target. */
5159 remote_terminal_ours (struct target_ops
*self
)
5161 if (!target_async_permitted
)
5162 /* Nothing to do. */
5165 /* See FIXME in remote_terminal_inferior. */
5166 if (remote_async_terminal_ours_p
)
5168 async_cleanup_sigint_signal_handler (NULL
);
5169 add_file_handler (input_fd
, stdin_event_handler
, 0);
5170 remote_async_terminal_ours_p
= 1;
5174 remote_console_output (char *msg
)
5178 for (p
= msg
; p
[0] && p
[1]; p
+= 2)
5181 char c
= fromhex (p
[0]) * 16 + fromhex (p
[1]);
5185 fputs_unfiltered (tb
, gdb_stdtarg
);
5187 gdb_flush (gdb_stdtarg
);
5190 typedef struct cached_reg
5193 gdb_byte data
[MAX_REGISTER_SIZE
];
5196 DEF_VEC_O(cached_reg_t
);
5198 typedef struct stop_reply
5200 struct notif_event base
;
5202 /* The identifier of the thread about this event */
5205 /* The remote state this event is associated with. When the remote
5206 connection, represented by a remote_state object, is closed,
5207 all the associated stop_reply events should be released. */
5208 struct remote_state
*rs
;
5210 struct target_waitstatus ws
;
5212 /* Expedited registers. This makes remote debugging a bit more
5213 efficient for those targets that provide critical registers as
5214 part of their normal status mechanism (as another roundtrip to
5215 fetch them is avoided). */
5216 VEC(cached_reg_t
) *regcache
;
5218 int stopped_by_watchpoint_p
;
5219 CORE_ADDR watch_data_address
;
5224 DECLARE_QUEUE_P (stop_reply_p
);
5225 DEFINE_QUEUE_P (stop_reply_p
);
5226 /* The list of already fetched and acknowledged stop events. This
5227 queue is used for notification Stop, and other notifications
5228 don't need queue for their events, because the notification events
5229 of Stop can't be consumed immediately, so that events should be
5230 queued first, and be consumed by remote_wait_{ns,as} one per
5231 time. Other notifications can consume their events immediately,
5232 so queue is not needed for them. */
5233 static QUEUE (stop_reply_p
) *stop_reply_queue
;
5236 stop_reply_xfree (struct stop_reply
*r
)
5238 notif_event_xfree ((struct notif_event
*) r
);
5242 remote_notif_stop_parse (struct notif_client
*self
, char *buf
,
5243 struct notif_event
*event
)
5245 remote_parse_stop_reply (buf
, (struct stop_reply
*) event
);
5249 remote_notif_stop_ack (struct notif_client
*self
, char *buf
,
5250 struct notif_event
*event
)
5252 struct stop_reply
*stop_reply
= (struct stop_reply
*) event
;
5255 putpkt ((char *) self
->ack_command
);
5257 if (stop_reply
->ws
.kind
== TARGET_WAITKIND_IGNORE
)
5258 /* We got an unknown stop reply. */
5259 error (_("Unknown stop reply"));
5261 push_stop_reply (stop_reply
);
5265 remote_notif_stop_can_get_pending_events (struct notif_client
*self
)
5267 /* We can't get pending events in remote_notif_process for
5268 notification stop, and we have to do this in remote_wait_ns
5269 instead. If we fetch all queued events from stub, remote stub
5270 may exit and we have no chance to process them back in
5272 mark_async_event_handler (remote_async_inferior_event_token
);
5277 stop_reply_dtr (struct notif_event
*event
)
5279 struct stop_reply
*r
= (struct stop_reply
*) event
;
5281 VEC_free (cached_reg_t
, r
->regcache
);
5284 static struct notif_event
*
5285 remote_notif_stop_alloc_reply (void)
5287 struct notif_event
*r
5288 = (struct notif_event
*) XNEW (struct stop_reply
);
5290 r
->dtr
= stop_reply_dtr
;
5295 /* A client of notification Stop. */
5297 struct notif_client notif_client_stop
=
5301 remote_notif_stop_parse
,
5302 remote_notif_stop_ack
,
5303 remote_notif_stop_can_get_pending_events
,
5304 remote_notif_stop_alloc_reply
,
5308 /* A parameter to pass data in and out. */
5310 struct queue_iter_param
5313 struct stop_reply
*output
;
5316 /* Remove stop replies in the queue if its pid is equal to the given
5320 remove_stop_reply_for_inferior (QUEUE (stop_reply_p
) *q
,
5321 QUEUE_ITER (stop_reply_p
) *iter
,
5325 struct queue_iter_param
*param
= data
;
5326 struct inferior
*inf
= param
->input
;
5328 if (ptid_get_pid (event
->ptid
) == inf
->pid
)
5330 stop_reply_xfree (event
);
5331 QUEUE_remove_elem (stop_reply_p
, q
, iter
);
5337 /* Discard all pending stop replies of inferior INF. */
5340 discard_pending_stop_replies (struct inferior
*inf
)
5343 struct queue_iter_param param
;
5344 struct stop_reply
*reply
;
5345 struct remote_state
*rs
= get_remote_state ();
5346 struct remote_notif_state
*rns
= rs
->notif_state
;
5348 /* This function can be notified when an inferior exists. When the
5349 target is not remote, the notification state is NULL. */
5350 if (rs
->remote_desc
== NULL
)
5353 reply
= (struct stop_reply
*) rns
->pending_event
[notif_client_stop
.id
];
5355 /* Discard the in-flight notification. */
5356 if (reply
!= NULL
&& ptid_get_pid (reply
->ptid
) == inf
->pid
)
5358 stop_reply_xfree (reply
);
5359 rns
->pending_event
[notif_client_stop
.id
] = NULL
;
5363 param
.output
= NULL
;
5364 /* Discard the stop replies we have already pulled with
5366 QUEUE_iterate (stop_reply_p
, stop_reply_queue
,
5367 remove_stop_reply_for_inferior
, ¶m
);
5370 /* If its remote state is equal to the given remote state,
5371 remove EVENT from the stop reply queue. */
5374 remove_stop_reply_of_remote_state (QUEUE (stop_reply_p
) *q
,
5375 QUEUE_ITER (stop_reply_p
) *iter
,
5379 struct queue_iter_param
*param
= data
;
5380 struct remote_state
*rs
= param
->input
;
5382 if (event
->rs
== rs
)
5384 stop_reply_xfree (event
);
5385 QUEUE_remove_elem (stop_reply_p
, q
, iter
);
5391 /* Discard the stop replies for RS in stop_reply_queue. */
5394 discard_pending_stop_replies_in_queue (struct remote_state
*rs
)
5396 struct queue_iter_param param
;
5399 param
.output
= NULL
;
5400 /* Discard the stop replies we have already pulled with
5402 QUEUE_iterate (stop_reply_p
, stop_reply_queue
,
5403 remove_stop_reply_of_remote_state
, ¶m
);
5406 /* A parameter to pass data in and out. */
5409 remote_notif_remove_once_on_match (QUEUE (stop_reply_p
) *q
,
5410 QUEUE_ITER (stop_reply_p
) *iter
,
5414 struct queue_iter_param
*param
= data
;
5415 ptid_t
*ptid
= param
->input
;
5417 if (ptid_match (event
->ptid
, *ptid
))
5419 param
->output
= event
;
5420 QUEUE_remove_elem (stop_reply_p
, q
, iter
);
5427 /* Remove the first reply in 'stop_reply_queue' which matches
5430 static struct stop_reply
*
5431 remote_notif_remove_queued_reply (ptid_t ptid
)
5433 struct queue_iter_param param
;
5435 param
.input
= &ptid
;
5436 param
.output
= NULL
;
5438 QUEUE_iterate (stop_reply_p
, stop_reply_queue
,
5439 remote_notif_remove_once_on_match
, ¶m
);
5441 fprintf_unfiltered (gdb_stdlog
,
5442 "notif: discard queued event: 'Stop' in %s\n",
5443 target_pid_to_str (ptid
));
5445 return param
.output
;
5448 /* Look for a queued stop reply belonging to PTID. If one is found,
5449 remove it from the queue, and return it. Returns NULL if none is
5450 found. If there are still queued events left to process, tell the
5451 event loop to get back to target_wait soon. */
5453 static struct stop_reply
*
5454 queued_stop_reply (ptid_t ptid
)
5456 struct stop_reply
*r
= remote_notif_remove_queued_reply (ptid
);
5458 if (!QUEUE_is_empty (stop_reply_p
, stop_reply_queue
))
5459 /* There's still at least an event left. */
5460 mark_async_event_handler (remote_async_inferior_event_token
);
5465 /* Push a fully parsed stop reply in the stop reply queue. Since we
5466 know that we now have at least one queued event left to pass to the
5467 core side, tell the event loop to get back to target_wait soon. */
5470 push_stop_reply (struct stop_reply
*new_event
)
5472 QUEUE_enque (stop_reply_p
, stop_reply_queue
, new_event
);
5475 fprintf_unfiltered (gdb_stdlog
,
5476 "notif: push 'Stop' %s to queue %d\n",
5477 target_pid_to_str (new_event
->ptid
),
5478 QUEUE_length (stop_reply_p
,
5481 mark_async_event_handler (remote_async_inferior_event_token
);
5485 stop_reply_match_ptid_and_ws (QUEUE (stop_reply_p
) *q
,
5486 QUEUE_ITER (stop_reply_p
) *iter
,
5487 struct stop_reply
*event
,
5490 ptid_t
*ptid
= data
;
5492 return !(ptid_equal (*ptid
, event
->ptid
)
5493 && event
->ws
.kind
== TARGET_WAITKIND_STOPPED
);
5496 /* Returns true if we have a stop reply for PTID. */
5499 peek_stop_reply (ptid_t ptid
)
5501 return !QUEUE_iterate (stop_reply_p
, stop_reply_queue
,
5502 stop_reply_match_ptid_and_ws
, &ptid
);
5505 /* Parse the stop reply in BUF. Either the function succeeds, and the
5506 result is stored in EVENT, or throws an error. */
5509 remote_parse_stop_reply (char *buf
, struct stop_reply
*event
)
5511 struct remote_arch_state
*rsa
= get_remote_arch_state ();
5515 event
->ptid
= null_ptid
;
5516 event
->rs
= get_remote_state ();
5517 event
->ws
.kind
= TARGET_WAITKIND_IGNORE
;
5518 event
->ws
.value
.integer
= 0;
5519 event
->stopped_by_watchpoint_p
= 0;
5520 event
->regcache
= NULL
;
5525 case 'T': /* Status with PC, SP, FP, ... */
5526 /* Expedited reply, containing Signal, {regno, reg} repeat. */
5527 /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where
5529 n... = register number
5530 r... = register contents
5533 p
= &buf
[3]; /* after Txx */
5541 /* If the packet contains a register number, save it in
5542 pnum and set p1 to point to the character following it.
5543 Otherwise p1 points to p. */
5545 /* If this packet is an awatch packet, don't parse the 'a'
5546 as a register number. */
5548 if (strncmp (p
, "awatch", strlen("awatch")) != 0
5549 && strncmp (p
, "core", strlen ("core") != 0))
5551 /* Read the ``P'' register number. */
5552 pnum
= strtol (p
, &p_temp
, 16);
5558 if (p1
== p
) /* No register number present here. */
5560 p1
= strchr (p
, ':');
5562 error (_("Malformed packet(a) (missing colon): %s\n\
5565 if (strncmp (p
, "thread", p1
- p
) == 0)
5566 event
->ptid
= read_ptid (++p1
, &p
);
5567 else if ((strncmp (p
, "watch", p1
- p
) == 0)
5568 || (strncmp (p
, "rwatch", p1
- p
) == 0)
5569 || (strncmp (p
, "awatch", p1
- p
) == 0))
5571 event
->stopped_by_watchpoint_p
= 1;
5572 p
= unpack_varlen_hex (++p1
, &addr
);
5573 event
->watch_data_address
= (CORE_ADDR
) addr
;
5575 else if (strncmp (p
, "library", p1
- p
) == 0)
5579 while (*p_temp
&& *p_temp
!= ';')
5582 event
->ws
.kind
= TARGET_WAITKIND_LOADED
;
5585 else if (strncmp (p
, "replaylog", p1
- p
) == 0)
5587 event
->ws
.kind
= TARGET_WAITKIND_NO_HISTORY
;
5588 /* p1 will indicate "begin" or "end", but it makes
5589 no difference for now, so ignore it. */
5590 p_temp
= strchr (p1
+ 1, ';');
5594 else if (strncmp (p
, "core", p1
- p
) == 0)
5598 p
= unpack_varlen_hex (++p1
, &c
);
5603 /* Silently skip unknown optional info. */
5604 p_temp
= strchr (p1
+ 1, ';');
5611 struct packet_reg
*reg
= packet_reg_from_pnum (rsa
, pnum
);
5612 cached_reg_t cached_reg
;
5617 error (_("Malformed packet(b) (missing colon): %s\n\
5623 error (_("Remote sent bad register number %s: %s\n\
5625 hex_string (pnum
), p
, buf
);
5627 cached_reg
.num
= reg
->regnum
;
5629 fieldsize
= hex2bin (p
, cached_reg
.data
,
5630 register_size (target_gdbarch (),
5633 if (fieldsize
< register_size (target_gdbarch (),
5635 warning (_("Remote reply is too short: %s"), buf
);
5637 VEC_safe_push (cached_reg_t
, event
->regcache
, &cached_reg
);
5641 error (_("Remote register badly formatted: %s\nhere: %s"),
5646 if (event
->ws
.kind
!= TARGET_WAITKIND_IGNORE
)
5650 case 'S': /* Old style status, just signal only. */
5654 event
->ws
.kind
= TARGET_WAITKIND_STOPPED
;
5655 sig
= (fromhex (buf
[1]) << 4) + fromhex (buf
[2]);
5656 if (GDB_SIGNAL_FIRST
<= sig
&& sig
< GDB_SIGNAL_LAST
)
5657 event
->ws
.value
.sig
= (enum gdb_signal
) sig
;
5659 event
->ws
.value
.sig
= GDB_SIGNAL_UNKNOWN
;
5662 case 'W': /* Target exited. */
5669 /* GDB used to accept only 2 hex chars here. Stubs should
5670 only send more if they detect GDB supports multi-process
5672 p
= unpack_varlen_hex (&buf
[1], &value
);
5676 /* The remote process exited. */
5677 event
->ws
.kind
= TARGET_WAITKIND_EXITED
;
5678 event
->ws
.value
.integer
= value
;
5682 /* The remote process exited with a signal. */
5683 event
->ws
.kind
= TARGET_WAITKIND_SIGNALLED
;
5684 if (GDB_SIGNAL_FIRST
<= value
&& value
< GDB_SIGNAL_LAST
)
5685 event
->ws
.value
.sig
= (enum gdb_signal
) value
;
5687 event
->ws
.value
.sig
= GDB_SIGNAL_UNKNOWN
;
5690 /* If no process is specified, assume inferior_ptid. */
5691 pid
= ptid_get_pid (inferior_ptid
);
5700 else if (strncmp (p
,
5701 "process:", sizeof ("process:") - 1) == 0)
5705 p
+= sizeof ("process:") - 1;
5706 unpack_varlen_hex (p
, &upid
);
5710 error (_("unknown stop reply packet: %s"), buf
);
5713 error (_("unknown stop reply packet: %s"), buf
);
5714 event
->ptid
= pid_to_ptid (pid
);
5719 if (non_stop
&& ptid_equal (event
->ptid
, null_ptid
))
5720 error (_("No process or thread specified in stop reply: %s"), buf
);
5723 /* When the stub wants to tell GDB about a new notification reply, it
5724 sends a notification (%Stop, for example). Those can come it at
5725 any time, hence, we have to make sure that any pending
5726 putpkt/getpkt sequence we're making is finished, before querying
5727 the stub for more events with the corresponding ack command
5728 (vStopped, for example). E.g., if we started a vStopped sequence
5729 immediately upon receiving the notification, something like this
5737 1.6) <-- (registers reply to step #1.3)
5739 Obviously, the reply in step #1.6 would be unexpected to a vStopped
5742 To solve this, whenever we parse a %Stop notification successfully,
5743 we mark the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN, and carry on
5744 doing whatever we were doing:
5750 <GDB marks the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN>
5751 2.5) <-- (registers reply to step #2.3)
5753 Eventualy after step #2.5, we return to the event loop, which
5754 notices there's an event on the
5755 REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN event and calls the
5756 associated callback --- the function below. At this point, we're
5757 always safe to start a vStopped sequence. :
5760 2.7) <-- T05 thread:2
5766 remote_notif_get_pending_events (struct notif_client
*nc
)
5768 struct remote_state
*rs
= get_remote_state ();
5770 if (rs
->notif_state
->pending_event
[nc
->id
] != NULL
)
5773 fprintf_unfiltered (gdb_stdlog
,
5774 "notif: process: '%s' ack pending event\n",
5778 nc
->ack (nc
, rs
->buf
, rs
->notif_state
->pending_event
[nc
->id
]);
5779 rs
->notif_state
->pending_event
[nc
->id
] = NULL
;
5783 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5784 if (strcmp (rs
->buf
, "OK") == 0)
5787 remote_notif_ack (nc
, rs
->buf
);
5793 fprintf_unfiltered (gdb_stdlog
,
5794 "notif: process: '%s' no pending reply\n",
5799 /* Called when it is decided that STOP_REPLY holds the info of the
5800 event that is to be returned to the core. This function always
5801 destroys STOP_REPLY. */
5804 process_stop_reply (struct stop_reply
*stop_reply
,
5805 struct target_waitstatus
*status
)
5809 *status
= stop_reply
->ws
;
5810 ptid
= stop_reply
->ptid
;
5812 /* If no thread/process was reported by the stub, assume the current
5814 if (ptid_equal (ptid
, null_ptid
))
5815 ptid
= inferior_ptid
;
5817 if (status
->kind
!= TARGET_WAITKIND_EXITED
5818 && status
->kind
!= TARGET_WAITKIND_SIGNALLED
)
5820 struct remote_state
*rs
= get_remote_state ();
5822 /* Expedited registers. */
5823 if (stop_reply
->regcache
)
5825 struct regcache
*regcache
5826 = get_thread_arch_regcache (ptid
, target_gdbarch ());
5831 VEC_iterate(cached_reg_t
, stop_reply
->regcache
, ix
, reg
);
5833 regcache_raw_supply (regcache
, reg
->num
, reg
->data
);
5834 VEC_free (cached_reg_t
, stop_reply
->regcache
);
5837 rs
->remote_stopped_by_watchpoint_p
= stop_reply
->stopped_by_watchpoint_p
;
5838 rs
->remote_watch_data_address
= stop_reply
->watch_data_address
;
5840 remote_notice_new_inferior (ptid
, 0);
5841 demand_private_info (ptid
)->core
= stop_reply
->core
;
5844 stop_reply_xfree (stop_reply
);
5848 /* The non-stop mode version of target_wait. */
5851 remote_wait_ns (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
5853 struct remote_state
*rs
= get_remote_state ();
5854 struct stop_reply
*stop_reply
;
5858 /* If in non-stop mode, get out of getpkt even if a
5859 notification is received. */
5861 ret
= getpkt_or_notif_sane (&rs
->buf
, &rs
->buf_size
,
5862 0 /* forever */, &is_notif
);
5865 if (ret
!= -1 && !is_notif
)
5868 case 'E': /* Error of some sort. */
5869 /* We're out of sync with the target now. Did it continue
5870 or not? We can't tell which thread it was in non-stop,
5871 so just ignore this. */
5872 warning (_("Remote failure reply: %s"), rs
->buf
);
5874 case 'O': /* Console output. */
5875 remote_console_output (rs
->buf
+ 1);
5878 warning (_("Invalid remote reply: %s"), rs
->buf
);
5882 /* Acknowledge a pending stop reply that may have arrived in the
5884 if (rs
->notif_state
->pending_event
[notif_client_stop
.id
] != NULL
)
5885 remote_notif_get_pending_events (¬if_client_stop
);
5887 /* If indeed we noticed a stop reply, we're done. */
5888 stop_reply
= queued_stop_reply (ptid
);
5889 if (stop_reply
!= NULL
)
5890 return process_stop_reply (stop_reply
, status
);
5892 /* Still no event. If we're just polling for an event, then
5893 return to the event loop. */
5894 if (options
& TARGET_WNOHANG
)
5896 status
->kind
= TARGET_WAITKIND_IGNORE
;
5897 return minus_one_ptid
;
5900 /* Otherwise do a blocking wait. */
5901 ret
= getpkt_or_notif_sane (&rs
->buf
, &rs
->buf_size
,
5902 1 /* forever */, &is_notif
);
5906 /* Wait until the remote machine stops, then return, storing status in
5907 STATUS just as `wait' would. */
5910 remote_wait_as (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
5912 struct remote_state
*rs
= get_remote_state ();
5913 ptid_t event_ptid
= null_ptid
;
5915 struct stop_reply
*stop_reply
;
5919 status
->kind
= TARGET_WAITKIND_IGNORE
;
5920 status
->value
.integer
= 0;
5922 stop_reply
= queued_stop_reply (ptid
);
5923 if (stop_reply
!= NULL
)
5924 return process_stop_reply (stop_reply
, status
);
5926 if (rs
->cached_wait_status
)
5927 /* Use the cached wait status, but only once. */
5928 rs
->cached_wait_status
= 0;
5934 if (!target_is_async_p ())
5936 ofunc
= signal (SIGINT
, sync_remote_interrupt
);
5937 /* If the user hit C-c before this packet, or between packets,
5938 pretend that it was hit right here. */
5939 if (check_quit_flag ())
5942 sync_remote_interrupt (SIGINT
);
5946 /* FIXME: cagney/1999-09-27: If we're in async mode we should
5947 _never_ wait for ever -> test on target_is_async_p().
5948 However, before we do that we need to ensure that the caller
5949 knows how to take the target into/out of async mode. */
5950 ret
= getpkt_or_notif_sane (&rs
->buf
, &rs
->buf_size
,
5951 wait_forever_enabled_p
, &is_notif
);
5953 if (!target_is_async_p ())
5954 signal (SIGINT
, ofunc
);
5956 /* GDB gets a notification. Return to core as this event is
5958 if (ret
!= -1 && is_notif
)
5959 return minus_one_ptid
;
5964 rs
->remote_stopped_by_watchpoint_p
= 0;
5966 /* We got something. */
5967 rs
->waiting_for_stop_reply
= 0;
5969 /* Assume that the target has acknowledged Ctrl-C unless we receive
5970 an 'F' or 'O' packet. */
5971 if (buf
[0] != 'F' && buf
[0] != 'O')
5972 rs
->ctrlc_pending_p
= 0;
5976 case 'E': /* Error of some sort. */
5977 /* We're out of sync with the target now. Did it continue or
5978 not? Not is more likely, so report a stop. */
5979 warning (_("Remote failure reply: %s"), buf
);
5980 status
->kind
= TARGET_WAITKIND_STOPPED
;
5981 status
->value
.sig
= GDB_SIGNAL_0
;
5983 case 'F': /* File-I/O request. */
5984 remote_fileio_request (buf
, rs
->ctrlc_pending_p
);
5985 rs
->ctrlc_pending_p
= 0;
5987 case 'T': case 'S': case 'X': case 'W':
5989 struct stop_reply
*stop_reply
5990 = (struct stop_reply
*) remote_notif_parse (¬if_client_stop
,
5993 event_ptid
= process_stop_reply (stop_reply
, status
);
5996 case 'O': /* Console output. */
5997 remote_console_output (buf
+ 1);
5999 /* The target didn't really stop; keep waiting. */
6000 rs
->waiting_for_stop_reply
= 1;
6004 if (rs
->last_sent_signal
!= GDB_SIGNAL_0
)
6006 /* Zero length reply means that we tried 'S' or 'C' and the
6007 remote system doesn't support it. */
6008 target_terminal_ours_for_output ();
6010 ("Can't send signals to this remote system. %s not sent.\n",
6011 gdb_signal_to_name (rs
->last_sent_signal
));
6012 rs
->last_sent_signal
= GDB_SIGNAL_0
;
6013 target_terminal_inferior ();
6015 strcpy ((char *) buf
, rs
->last_sent_step
? "s" : "c");
6016 putpkt ((char *) buf
);
6018 /* We just told the target to resume, so a stop reply is in
6020 rs
->waiting_for_stop_reply
= 1;
6023 /* else fallthrough */
6025 warning (_("Invalid remote reply: %s"), buf
);
6027 rs
->waiting_for_stop_reply
= 1;
6031 if (status
->kind
== TARGET_WAITKIND_IGNORE
)
6033 /* Nothing interesting happened. If we're doing a non-blocking
6034 poll, we're done. Otherwise, go back to waiting. */
6035 if (options
& TARGET_WNOHANG
)
6036 return minus_one_ptid
;
6040 else if (status
->kind
!= TARGET_WAITKIND_EXITED
6041 && status
->kind
!= TARGET_WAITKIND_SIGNALLED
)
6043 if (!ptid_equal (event_ptid
, null_ptid
))
6044 record_currthread (rs
, event_ptid
);
6046 event_ptid
= inferior_ptid
;
6049 /* A process exit. Invalidate our notion of current thread. */
6050 record_currthread (rs
, minus_one_ptid
);
6055 /* Wait until the remote machine stops, then return, storing status in
6056 STATUS just as `wait' would. */
6059 remote_wait (struct target_ops
*ops
,
6060 ptid_t ptid
, struct target_waitstatus
*status
, int options
)
6065 event_ptid
= remote_wait_ns (ptid
, status
, options
);
6067 event_ptid
= remote_wait_as (ptid
, status
, options
);
6069 if (target_can_async_p ())
6071 /* If there are are events left in the queue tell the event loop
6073 if (!QUEUE_is_empty (stop_reply_p
, stop_reply_queue
))
6074 mark_async_event_handler (remote_async_inferior_event_token
);
6080 /* Fetch a single register using a 'p' packet. */
6083 fetch_register_using_p (struct regcache
*regcache
, struct packet_reg
*reg
)
6085 struct remote_state
*rs
= get_remote_state ();
6087 char regp
[MAX_REGISTER_SIZE
];
6090 if (remote_protocol_packets
[PACKET_p
].support
== PACKET_DISABLE
)
6093 if (reg
->pnum
== -1)
6098 p
+= hexnumstr (p
, reg
->pnum
);
6101 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6105 switch (packet_ok (buf
, &remote_protocol_packets
[PACKET_p
]))
6109 case PACKET_UNKNOWN
:
6112 error (_("Could not fetch register \"%s\"; remote failure reply '%s'"),
6113 gdbarch_register_name (get_regcache_arch (regcache
),
6118 /* If this register is unfetchable, tell the regcache. */
6121 regcache_raw_supply (regcache
, reg
->regnum
, NULL
);
6125 /* Otherwise, parse and supply the value. */
6131 error (_("fetch_register_using_p: early buf termination"));
6133 regp
[i
++] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
6136 regcache_raw_supply (regcache
, reg
->regnum
, regp
);
6140 /* Fetch the registers included in the target's 'g' packet. */
6143 send_g_packet (void)
6145 struct remote_state
*rs
= get_remote_state ();
6148 xsnprintf (rs
->buf
, get_remote_packet_size (), "g");
6149 remote_send (&rs
->buf
, &rs
->buf_size
);
6151 /* We can get out of synch in various cases. If the first character
6152 in the buffer is not a hex character, assume that has happened
6153 and try to fetch another packet to read. */
6154 while ((rs
->buf
[0] < '0' || rs
->buf
[0] > '9')
6155 && (rs
->buf
[0] < 'A' || rs
->buf
[0] > 'F')
6156 && (rs
->buf
[0] < 'a' || rs
->buf
[0] > 'f')
6157 && rs
->buf
[0] != 'x') /* New: unavailable register value. */
6160 fprintf_unfiltered (gdb_stdlog
,
6161 "Bad register packet; fetching a new packet\n");
6162 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6165 buf_len
= strlen (rs
->buf
);
6167 /* Sanity check the received packet. */
6168 if (buf_len
% 2 != 0)
6169 error (_("Remote 'g' packet reply is of odd length: %s"), rs
->buf
);
6175 process_g_packet (struct regcache
*regcache
)
6177 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
6178 struct remote_state
*rs
= get_remote_state ();
6179 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6184 buf_len
= strlen (rs
->buf
);
6186 /* Further sanity checks, with knowledge of the architecture. */
6187 if (buf_len
> 2 * rsa
->sizeof_g_packet
)
6188 error (_("Remote 'g' packet reply is too long: %s"), rs
->buf
);
6190 /* Save the size of the packet sent to us by the target. It is used
6191 as a heuristic when determining the max size of packets that the
6192 target can safely receive. */
6193 if (rsa
->actual_register_packet_size
== 0)
6194 rsa
->actual_register_packet_size
= buf_len
;
6196 /* If this is smaller than we guessed the 'g' packet would be,
6197 update our records. A 'g' reply that doesn't include a register's
6198 value implies either that the register is not available, or that
6199 the 'p' packet must be used. */
6200 if (buf_len
< 2 * rsa
->sizeof_g_packet
)
6202 rsa
->sizeof_g_packet
= buf_len
/ 2;
6204 for (i
= 0; i
< gdbarch_num_regs (gdbarch
); i
++)
6206 if (rsa
->regs
[i
].pnum
== -1)
6209 if (rsa
->regs
[i
].offset
>= rsa
->sizeof_g_packet
)
6210 rsa
->regs
[i
].in_g_packet
= 0;
6212 rsa
->regs
[i
].in_g_packet
= 1;
6216 regs
= alloca (rsa
->sizeof_g_packet
);
6218 /* Unimplemented registers read as all bits zero. */
6219 memset (regs
, 0, rsa
->sizeof_g_packet
);
6221 /* Reply describes registers byte by byte, each byte encoded as two
6222 hex characters. Suck them all up, then supply them to the
6223 register cacheing/storage mechanism. */
6226 for (i
= 0; i
< rsa
->sizeof_g_packet
; i
++)
6228 if (p
[0] == 0 || p
[1] == 0)
6229 /* This shouldn't happen - we adjusted sizeof_g_packet above. */
6230 internal_error (__FILE__
, __LINE__
,
6231 _("unexpected end of 'g' packet reply"));
6233 if (p
[0] == 'x' && p
[1] == 'x')
6234 regs
[i
] = 0; /* 'x' */
6236 regs
[i
] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
6240 for (i
= 0; i
< gdbarch_num_regs (gdbarch
); i
++)
6242 struct packet_reg
*r
= &rsa
->regs
[i
];
6246 if (r
->offset
* 2 >= strlen (rs
->buf
))
6247 /* This shouldn't happen - we adjusted in_g_packet above. */
6248 internal_error (__FILE__
, __LINE__
,
6249 _("unexpected end of 'g' packet reply"));
6250 else if (rs
->buf
[r
->offset
* 2] == 'x')
6252 gdb_assert (r
->offset
* 2 < strlen (rs
->buf
));
6253 /* The register isn't available, mark it as such (at
6254 the same time setting the value to zero). */
6255 regcache_raw_supply (regcache
, r
->regnum
, NULL
);
6258 regcache_raw_supply (regcache
, r
->regnum
,
6265 fetch_registers_using_g (struct regcache
*regcache
)
6268 process_g_packet (regcache
);
6271 /* Make the remote selected traceframe match GDB's selected
6275 set_remote_traceframe (void)
6278 struct remote_state
*rs
= get_remote_state ();
6280 if (rs
->remote_traceframe_number
== get_traceframe_number ())
6283 /* Avoid recursion, remote_trace_find calls us again. */
6284 rs
->remote_traceframe_number
= get_traceframe_number ();
6286 newnum
= target_trace_find (tfind_number
,
6287 get_traceframe_number (), 0, 0, NULL
);
6289 /* Should not happen. If it does, all bets are off. */
6290 if (newnum
!= get_traceframe_number ())
6291 warning (_("could not set remote traceframe"));
6295 remote_fetch_registers (struct target_ops
*ops
,
6296 struct regcache
*regcache
, int regnum
)
6298 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6301 set_remote_traceframe ();
6302 set_general_thread (inferior_ptid
);
6306 struct packet_reg
*reg
= packet_reg_from_regnum (rsa
, regnum
);
6308 gdb_assert (reg
!= NULL
);
6310 /* If this register might be in the 'g' packet, try that first -
6311 we are likely to read more than one register. If this is the
6312 first 'g' packet, we might be overly optimistic about its
6313 contents, so fall back to 'p'. */
6314 if (reg
->in_g_packet
)
6316 fetch_registers_using_g (regcache
);
6317 if (reg
->in_g_packet
)
6321 if (fetch_register_using_p (regcache
, reg
))
6324 /* This register is not available. */
6325 regcache_raw_supply (regcache
, reg
->regnum
, NULL
);
6330 fetch_registers_using_g (regcache
);
6332 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
6333 if (!rsa
->regs
[i
].in_g_packet
)
6334 if (!fetch_register_using_p (regcache
, &rsa
->regs
[i
]))
6336 /* This register is not available. */
6337 regcache_raw_supply (regcache
, i
, NULL
);
6341 /* Prepare to store registers. Since we may send them all (using a
6342 'G' request), we have to read out the ones we don't want to change
6346 remote_prepare_to_store (struct target_ops
*self
, struct regcache
*regcache
)
6348 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6350 gdb_byte buf
[MAX_REGISTER_SIZE
];
6352 /* Make sure the entire registers array is valid. */
6353 switch (remote_protocol_packets
[PACKET_P
].support
)
6355 case PACKET_DISABLE
:
6356 case PACKET_SUPPORT_UNKNOWN
:
6357 /* Make sure all the necessary registers are cached. */
6358 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
6359 if (rsa
->regs
[i
].in_g_packet
)
6360 regcache_raw_read (regcache
, rsa
->regs
[i
].regnum
, buf
);
6367 /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF
6368 packet was not recognized. */
6371 store_register_using_P (const struct regcache
*regcache
,
6372 struct packet_reg
*reg
)
6374 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
6375 struct remote_state
*rs
= get_remote_state ();
6376 /* Try storing a single register. */
6377 char *buf
= rs
->buf
;
6378 gdb_byte regp
[MAX_REGISTER_SIZE
];
6381 if (remote_protocol_packets
[PACKET_P
].support
== PACKET_DISABLE
)
6384 if (reg
->pnum
== -1)
6387 xsnprintf (buf
, get_remote_packet_size (), "P%s=", phex_nz (reg
->pnum
, 0));
6388 p
= buf
+ strlen (buf
);
6389 regcache_raw_collect (regcache
, reg
->regnum
, regp
);
6390 bin2hex (regp
, p
, register_size (gdbarch
, reg
->regnum
));
6392 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6394 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_P
]))
6399 error (_("Could not write register \"%s\"; remote failure reply '%s'"),
6400 gdbarch_register_name (gdbarch
, reg
->regnum
), rs
->buf
);
6401 case PACKET_UNKNOWN
:
6404 internal_error (__FILE__
, __LINE__
, _("Bad result from packet_ok"));
6408 /* Store register REGNUM, or all registers if REGNUM == -1, from the
6409 contents of the register cache buffer. FIXME: ignores errors. */
6412 store_registers_using_G (const struct regcache
*regcache
)
6414 struct remote_state
*rs
= get_remote_state ();
6415 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6419 /* Extract all the registers in the regcache copying them into a
6424 regs
= alloca (rsa
->sizeof_g_packet
);
6425 memset (regs
, 0, rsa
->sizeof_g_packet
);
6426 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
6428 struct packet_reg
*r
= &rsa
->regs
[i
];
6431 regcache_raw_collect (regcache
, r
->regnum
, regs
+ r
->offset
);
6435 /* Command describes registers byte by byte,
6436 each byte encoded as two hex characters. */
6439 /* remote_prepare_to_store insures that rsa->sizeof_g_packet gets
6441 bin2hex (regs
, p
, rsa
->sizeof_g_packet
);
6443 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6444 if (packet_check_result (rs
->buf
) == PACKET_ERROR
)
6445 error (_("Could not write registers; remote failure reply '%s'"),
6449 /* Store register REGNUM, or all registers if REGNUM == -1, from the contents
6450 of the register cache buffer. FIXME: ignores errors. */
6453 remote_store_registers (struct target_ops
*ops
,
6454 struct regcache
*regcache
, int regnum
)
6456 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6459 set_remote_traceframe ();
6460 set_general_thread (inferior_ptid
);
6464 struct packet_reg
*reg
= packet_reg_from_regnum (rsa
, regnum
);
6466 gdb_assert (reg
!= NULL
);
6468 /* Always prefer to store registers using the 'P' packet if
6469 possible; we often change only a small number of registers.
6470 Sometimes we change a larger number; we'd need help from a
6471 higher layer to know to use 'G'. */
6472 if (store_register_using_P (regcache
, reg
))
6475 /* For now, don't complain if we have no way to write the
6476 register. GDB loses track of unavailable registers too
6477 easily. Some day, this may be an error. We don't have
6478 any way to read the register, either... */
6479 if (!reg
->in_g_packet
)
6482 store_registers_using_G (regcache
);
6486 store_registers_using_G (regcache
);
6488 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
6489 if (!rsa
->regs
[i
].in_g_packet
)
6490 if (!store_register_using_P (regcache
, &rsa
->regs
[i
]))
6491 /* See above for why we do not issue an error here. */
6496 /* Return the number of hex digits in num. */
6499 hexnumlen (ULONGEST num
)
6503 for (i
= 0; num
!= 0; i
++)
6509 /* Set BUF to the minimum number of hex digits representing NUM. */
6512 hexnumstr (char *buf
, ULONGEST num
)
6514 int len
= hexnumlen (num
);
6516 return hexnumnstr (buf
, num
, len
);
6520 /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */
6523 hexnumnstr (char *buf
, ULONGEST num
, int width
)
6529 for (i
= width
- 1; i
>= 0; i
--)
6531 buf
[i
] = "0123456789abcdef"[(num
& 0xf)];
6538 /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */
6541 remote_address_masked (CORE_ADDR addr
)
6543 unsigned int address_size
= remote_address_size
;
6545 /* If "remoteaddresssize" was not set, default to target address size. */
6547 address_size
= gdbarch_addr_bit (target_gdbarch ());
6549 if (address_size
> 0
6550 && address_size
< (sizeof (ULONGEST
) * 8))
6552 /* Only create a mask when that mask can safely be constructed
6553 in a ULONGEST variable. */
6556 mask
= (mask
<< address_size
) - 1;
6562 /* Determine whether the remote target supports binary downloading.
6563 This is accomplished by sending a no-op memory write of zero length
6564 to the target at the specified address. It does not suffice to send
6565 the whole packet, since many stubs strip the eighth bit and
6566 subsequently compute a wrong checksum, which causes real havoc with
6569 NOTE: This can still lose if the serial line is not eight-bit
6570 clean. In cases like this, the user should clear "remote
6574 check_binary_download (CORE_ADDR addr
)
6576 struct remote_state
*rs
= get_remote_state ();
6578 switch (remote_protocol_packets
[PACKET_X
].support
)
6580 case PACKET_DISABLE
:
6584 case PACKET_SUPPORT_UNKNOWN
:
6590 p
+= hexnumstr (p
, (ULONGEST
) addr
);
6592 p
+= hexnumstr (p
, (ULONGEST
) 0);
6596 putpkt_binary (rs
->buf
, (int) (p
- rs
->buf
));
6597 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6599 if (rs
->buf
[0] == '\0')
6602 fprintf_unfiltered (gdb_stdlog
,
6603 "binary downloading NOT "
6604 "supported by target\n");
6605 remote_protocol_packets
[PACKET_X
].support
= PACKET_DISABLE
;
6610 fprintf_unfiltered (gdb_stdlog
,
6611 "binary downloading supported by target\n");
6612 remote_protocol_packets
[PACKET_X
].support
= PACKET_ENABLE
;
6619 /* Write memory data directly to the remote machine.
6620 This does not inform the data cache; the data cache uses this.
6621 HEADER is the starting part of the packet.
6622 MEMADDR is the address in the remote memory space.
6623 MYADDR is the address of the buffer in our space.
6624 LEN is the number of bytes.
6625 PACKET_FORMAT should be either 'X' or 'M', and indicates if we
6626 should send data as binary ('X'), or hex-encoded ('M').
6628 The function creates packet of the form
6629 <HEADER><ADDRESS>,<LENGTH>:<DATA>
6631 where encoding of <DATA> is termined by PACKET_FORMAT.
6633 If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma
6636 Return the transferred status, error or OK (an
6637 'enum target_xfer_status' value). Save the number of bytes
6638 transferred in *XFERED_LEN. Only transfer a single packet. */
6640 static enum target_xfer_status
6641 remote_write_bytes_aux (const char *header
, CORE_ADDR memaddr
,
6642 const gdb_byte
*myaddr
, ULONGEST len
,
6643 ULONGEST
*xfered_len
, char packet_format
,
6646 struct remote_state
*rs
= get_remote_state ();
6656 if (packet_format
!= 'X' && packet_format
!= 'M')
6657 internal_error (__FILE__
, __LINE__
,
6658 _("remote_write_bytes_aux: bad packet format"));
6661 return TARGET_XFER_EOF
;
6663 payload_size
= get_memory_write_packet_size ();
6665 /* The packet buffer will be large enough for the payload;
6666 get_memory_packet_size ensures this. */
6669 /* Compute the size of the actual payload by subtracting out the
6670 packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */
6672 payload_size
-= strlen ("$,:#NN");
6674 /* The comma won't be used. */
6676 header_length
= strlen (header
);
6677 payload_size
-= header_length
;
6678 payload_size
-= hexnumlen (memaddr
);
6680 /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */
6682 strcat (rs
->buf
, header
);
6683 p
= rs
->buf
+ strlen (header
);
6685 /* Compute a best guess of the number of bytes actually transfered. */
6686 if (packet_format
== 'X')
6688 /* Best guess at number of bytes that will fit. */
6689 todo
= min (len
, payload_size
);
6691 payload_size
-= hexnumlen (todo
);
6692 todo
= min (todo
, payload_size
);
6696 /* Num bytes that will fit. */
6697 todo
= min (len
, payload_size
/ 2);
6699 payload_size
-= hexnumlen (todo
);
6700 todo
= min (todo
, payload_size
/ 2);
6704 internal_error (__FILE__
, __LINE__
,
6705 _("minimum packet size too small to write data"));
6707 /* If we already need another packet, then try to align the end
6708 of this packet to a useful boundary. */
6709 if (todo
> 2 * REMOTE_ALIGN_WRITES
&& todo
< len
)
6710 todo
= ((memaddr
+ todo
) & ~(REMOTE_ALIGN_WRITES
- 1)) - memaddr
;
6712 /* Append "<memaddr>". */
6713 memaddr
= remote_address_masked (memaddr
);
6714 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
6721 /* Append <len>. Retain the location/size of <len>. It may need to
6722 be adjusted once the packet body has been created. */
6724 plenlen
= hexnumstr (p
, (ULONGEST
) todo
);
6732 /* Append the packet body. */
6733 if (packet_format
== 'X')
6735 /* Binary mode. Send target system values byte by byte, in
6736 increasing byte addresses. Only escape certain critical
6738 payload_length
= remote_escape_output (myaddr
, todo
, (gdb_byte
*) p
,
6739 &nr_bytes
, payload_size
);
6741 /* If not all TODO bytes fit, then we'll need another packet. Make
6742 a second try to keep the end of the packet aligned. Don't do
6743 this if the packet is tiny. */
6744 if (nr_bytes
< todo
&& nr_bytes
> 2 * REMOTE_ALIGN_WRITES
)
6748 new_nr_bytes
= (((memaddr
+ nr_bytes
) & ~(REMOTE_ALIGN_WRITES
- 1))
6750 if (new_nr_bytes
!= nr_bytes
)
6751 payload_length
= remote_escape_output (myaddr
, new_nr_bytes
,
6752 (gdb_byte
*) p
, &nr_bytes
,
6756 p
+= payload_length
;
6757 if (use_length
&& nr_bytes
< todo
)
6759 /* Escape chars have filled up the buffer prematurely,
6760 and we have actually sent fewer bytes than planned.
6761 Fix-up the length field of the packet. Use the same
6762 number of characters as before. */
6763 plen
+= hexnumnstr (plen
, (ULONGEST
) nr_bytes
, plenlen
);
6764 *plen
= ':'; /* overwrite \0 from hexnumnstr() */
6769 /* Normal mode: Send target system values byte by byte, in
6770 increasing byte addresses. Each byte is encoded as a two hex
6772 nr_bytes
= bin2hex (myaddr
, p
, todo
);
6776 putpkt_binary (rs
->buf
, (int) (p
- rs
->buf
));
6777 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6779 if (rs
->buf
[0] == 'E')
6780 return TARGET_XFER_E_IO
;
6782 /* Return NR_BYTES, not TODO, in case escape chars caused us to send
6783 fewer bytes than we'd planned. */
6784 *xfered_len
= (ULONGEST
) nr_bytes
;
6785 return TARGET_XFER_OK
;
6788 /* Write memory data directly to the remote machine.
6789 This does not inform the data cache; the data cache uses this.
6790 MEMADDR is the address in the remote memory space.
6791 MYADDR is the address of the buffer in our space.
6792 LEN is the number of bytes.
6794 Return the transferred status, error or OK (an
6795 'enum target_xfer_status' value). Save the number of bytes
6796 transferred in *XFERED_LEN. Only transfer a single packet. */
6798 static enum target_xfer_status
6799 remote_write_bytes (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ULONGEST len
,
6800 ULONGEST
*xfered_len
)
6802 char *packet_format
= 0;
6804 /* Check whether the target supports binary download. */
6805 check_binary_download (memaddr
);
6807 switch (remote_protocol_packets
[PACKET_X
].support
)
6810 packet_format
= "X";
6812 case PACKET_DISABLE
:
6813 packet_format
= "M";
6815 case PACKET_SUPPORT_UNKNOWN
:
6816 internal_error (__FILE__
, __LINE__
,
6817 _("remote_write_bytes: bad internal state"));
6819 internal_error (__FILE__
, __LINE__
, _("bad switch"));
6822 return remote_write_bytes_aux (packet_format
,
6823 memaddr
, myaddr
, len
, xfered_len
,
6824 packet_format
[0], 1);
6827 /* Read memory data directly from the remote machine.
6828 This does not use the data cache; the data cache uses this.
6829 MEMADDR is the address in the remote memory space.
6830 MYADDR is the address of the buffer in our space.
6831 LEN is the number of bytes.
6833 Return the transferred status, error or OK (an
6834 'enum target_xfer_status' value). Save the number of bytes
6835 transferred in *XFERED_LEN. */
6837 static enum target_xfer_status
6838 remote_read_bytes_1 (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ULONGEST len
,
6839 ULONGEST
*xfered_len
)
6841 struct remote_state
*rs
= get_remote_state ();
6842 int max_buf_size
; /* Max size of packet output buffer. */
6847 max_buf_size
= get_memory_read_packet_size ();
6848 /* The packet buffer will be large enough for the payload;
6849 get_memory_packet_size ensures this. */
6851 /* Number if bytes that will fit. */
6852 todo
= min (len
, max_buf_size
/ 2);
6854 /* Construct "m"<memaddr>","<len>". */
6855 memaddr
= remote_address_masked (memaddr
);
6858 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
6860 p
+= hexnumstr (p
, (ULONGEST
) todo
);
6863 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6864 if (rs
->buf
[0] == 'E'
6865 && isxdigit (rs
->buf
[1]) && isxdigit (rs
->buf
[2])
6866 && rs
->buf
[3] == '\0')
6867 return TARGET_XFER_E_IO
;
6868 /* Reply describes memory byte by byte, each byte encoded as two hex
6871 i
= hex2bin (p
, myaddr
, todo
);
6872 /* Return what we have. Let higher layers handle partial reads. */
6873 *xfered_len
= (ULONGEST
) i
;
6874 return TARGET_XFER_OK
;
6877 /* Using the set of read-only target sections of remote, read live
6880 For interface/parameters/return description see target.h,
6883 static enum target_xfer_status
6884 remote_xfer_live_readonly_partial (struct target_ops
*ops
, gdb_byte
*readbuf
,
6885 ULONGEST memaddr
, ULONGEST len
,
6886 ULONGEST
*xfered_len
)
6888 struct target_section
*secp
;
6889 struct target_section_table
*table
;
6891 secp
= target_section_by_addr (ops
, memaddr
);
6893 && (bfd_get_section_flags (secp
->the_bfd_section
->owner
,
6894 secp
->the_bfd_section
)
6897 struct target_section
*p
;
6898 ULONGEST memend
= memaddr
+ len
;
6900 table
= target_get_section_table (ops
);
6902 for (p
= table
->sections
; p
< table
->sections_end
; p
++)
6904 if (memaddr
>= p
->addr
)
6906 if (memend
<= p
->endaddr
)
6908 /* Entire transfer is within this section. */
6909 return remote_read_bytes_1 (memaddr
, readbuf
, len
,
6912 else if (memaddr
>= p
->endaddr
)
6914 /* This section ends before the transfer starts. */
6919 /* This section overlaps the transfer. Just do half. */
6920 len
= p
->endaddr
- memaddr
;
6921 return remote_read_bytes_1 (memaddr
, readbuf
, len
,
6928 return TARGET_XFER_EOF
;
6931 /* Similar to remote_read_bytes_1, but it reads from the remote stub
6932 first if the requested memory is unavailable in traceframe.
6933 Otherwise, fall back to remote_read_bytes_1. */
6935 static enum target_xfer_status
6936 remote_read_bytes (struct target_ops
*ops
, CORE_ADDR memaddr
,
6937 gdb_byte
*myaddr
, ULONGEST len
, ULONGEST
*xfered_len
)
6942 if (get_traceframe_number () != -1)
6944 VEC(mem_range_s
) *available
;
6946 /* If we fail to get the set of available memory, then the
6947 target does not support querying traceframe info, and so we
6948 attempt reading from the traceframe anyway (assuming the
6949 target implements the old QTro packet then). */
6950 if (traceframe_available_memory (&available
, memaddr
, len
))
6952 struct cleanup
*old_chain
;
6954 old_chain
= make_cleanup (VEC_cleanup(mem_range_s
), &available
);
6956 if (VEC_empty (mem_range_s
, available
)
6957 || VEC_index (mem_range_s
, available
, 0)->start
!= memaddr
)
6959 enum target_xfer_status res
;
6961 /* Don't read into the traceframe's available
6963 if (!VEC_empty (mem_range_s
, available
))
6965 LONGEST oldlen
= len
;
6967 len
= VEC_index (mem_range_s
, available
, 0)->start
- memaddr
;
6968 gdb_assert (len
<= oldlen
);
6971 do_cleanups (old_chain
);
6973 /* This goes through the topmost target again. */
6974 res
= remote_xfer_live_readonly_partial (ops
, myaddr
, memaddr
,
6976 if (res
== TARGET_XFER_OK
)
6977 return TARGET_XFER_OK
;
6980 /* No use trying further, we know some memory starting
6981 at MEMADDR isn't available. */
6983 return TARGET_XFER_UNAVAILABLE
;
6987 /* Don't try to read more than how much is available, in
6988 case the target implements the deprecated QTro packet to
6989 cater for older GDBs (the target's knowledge of read-only
6990 sections may be outdated by now). */
6991 len
= VEC_index (mem_range_s
, available
, 0)->length
;
6993 do_cleanups (old_chain
);
6997 return remote_read_bytes_1 (memaddr
, myaddr
, len
, xfered_len
);
7002 /* Sends a packet with content determined by the printf format string
7003 FORMAT and the remaining arguments, then gets the reply. Returns
7004 whether the packet was a success, a failure, or unknown. */
7006 static enum packet_result
7007 remote_send_printf (const char *format
, ...)
7009 struct remote_state
*rs
= get_remote_state ();
7010 int max_size
= get_remote_packet_size ();
7013 va_start (ap
, format
);
7016 if (vsnprintf (rs
->buf
, max_size
, format
, ap
) >= max_size
)
7017 internal_error (__FILE__
, __LINE__
, _("Too long remote packet."));
7019 if (putpkt (rs
->buf
) < 0)
7020 error (_("Communication problem with target."));
7023 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7025 return packet_check_result (rs
->buf
);
7029 restore_remote_timeout (void *p
)
7031 int value
= *(int *)p
;
7033 remote_timeout
= value
;
7036 /* Flash writing can take quite some time. We'll set
7037 effectively infinite timeout for flash operations.
7038 In future, we'll need to decide on a better approach. */
7039 static const int remote_flash_timeout
= 1000;
7042 remote_flash_erase (struct target_ops
*ops
,
7043 ULONGEST address
, LONGEST length
)
7045 int addr_size
= gdbarch_addr_bit (target_gdbarch ()) / 8;
7046 int saved_remote_timeout
= remote_timeout
;
7047 enum packet_result ret
;
7048 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
7049 &saved_remote_timeout
);
7051 remote_timeout
= remote_flash_timeout
;
7053 ret
= remote_send_printf ("vFlashErase:%s,%s",
7054 phex (address
, addr_size
),
7058 case PACKET_UNKNOWN
:
7059 error (_("Remote target does not support flash erase"));
7061 error (_("Error erasing flash with vFlashErase packet"));
7066 do_cleanups (back_to
);
7069 static enum target_xfer_status
7070 remote_flash_write (struct target_ops
*ops
, ULONGEST address
,
7071 ULONGEST length
, ULONGEST
*xfered_len
,
7072 const gdb_byte
*data
)
7074 int saved_remote_timeout
= remote_timeout
;
7075 enum target_xfer_status ret
;
7076 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
7077 &saved_remote_timeout
);
7079 remote_timeout
= remote_flash_timeout
;
7080 ret
= remote_write_bytes_aux ("vFlashWrite:", address
, data
, length
,
7082 do_cleanups (back_to
);
7088 remote_flash_done (struct target_ops
*ops
)
7090 int saved_remote_timeout
= remote_timeout
;
7092 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
7093 &saved_remote_timeout
);
7095 remote_timeout
= remote_flash_timeout
;
7096 ret
= remote_send_printf ("vFlashDone");
7097 do_cleanups (back_to
);
7101 case PACKET_UNKNOWN
:
7102 error (_("Remote target does not support vFlashDone"));
7104 error (_("Error finishing flash operation"));
7111 remote_files_info (struct target_ops
*ignore
)
7113 puts_filtered ("Debugging a target over a serial line.\n");
7116 /* Stuff for dealing with the packets which are part of this protocol.
7117 See comment at top of file for details. */
7119 /* Close/unpush the remote target, and throw a TARGET_CLOSE_ERROR
7120 error to higher layers. Called when a serial error is detected.
7121 The exception message is STRING, followed by a colon and a blank,
7122 the system error message for errno at function entry and final dot
7123 for output compatibility with throw_perror_with_name. */
7126 unpush_and_perror (const char *string
)
7128 int saved_errno
= errno
;
7130 remote_unpush_target ();
7131 throw_error (TARGET_CLOSE_ERROR
, "%s: %s.", string
,
7132 safe_strerror (saved_errno
));
7135 /* Read a single character from the remote end. */
7138 readchar (int timeout
)
7141 struct remote_state
*rs
= get_remote_state ();
7143 ch
= serial_readchar (rs
->remote_desc
, timeout
);
7148 switch ((enum serial_rc
) ch
)
7151 remote_unpush_target ();
7152 throw_error (TARGET_CLOSE_ERROR
, _("Remote connection closed"));
7155 unpush_and_perror (_("Remote communication error. "
7156 "Target disconnected."));
7158 case SERIAL_TIMEOUT
:
7164 /* Wrapper for serial_write that closes the target and throws if
7168 remote_serial_write (const char *str
, int len
)
7170 struct remote_state
*rs
= get_remote_state ();
7172 if (serial_write (rs
->remote_desc
, str
, len
))
7174 unpush_and_perror (_("Remote communication error. "
7175 "Target disconnected."));
7179 /* Send the command in *BUF to the remote machine, and read the reply
7180 into *BUF. Report an error if we get an error reply. Resize
7181 *BUF using xrealloc if necessary to hold the result, and update
7185 remote_send (char **buf
,
7189 getpkt (buf
, sizeof_buf
, 0);
7191 if ((*buf
)[0] == 'E')
7192 error (_("Remote failure reply: %s"), *buf
);
7195 /* Return a pointer to an xmalloc'ed string representing an escaped
7196 version of BUF, of len N. E.g. \n is converted to \\n, \t to \\t,
7197 etc. The caller is responsible for releasing the returned
7201 escape_buffer (const char *buf
, int n
)
7203 struct cleanup
*old_chain
;
7204 struct ui_file
*stb
;
7207 stb
= mem_fileopen ();
7208 old_chain
= make_cleanup_ui_file_delete (stb
);
7210 fputstrn_unfiltered (buf
, n
, 0, stb
);
7211 str
= ui_file_xstrdup (stb
, NULL
);
7212 do_cleanups (old_chain
);
7216 /* Display a null-terminated packet on stdout, for debugging, using C
7220 print_packet (char *buf
)
7222 puts_filtered ("\"");
7223 fputstr_filtered (buf
, '"', gdb_stdout
);
7224 puts_filtered ("\"");
7230 return putpkt_binary (buf
, strlen (buf
));
7233 /* Send a packet to the remote machine, with error checking. The data
7234 of the packet is in BUF. The string in BUF can be at most
7235 get_remote_packet_size () - 5 to account for the $, # and checksum,
7236 and for a possible /0 if we are debugging (remote_debug) and want
7237 to print the sent packet as a string. */
7240 putpkt_binary (char *buf
, int cnt
)
7242 struct remote_state
*rs
= get_remote_state ();
7244 unsigned char csum
= 0;
7245 char *buf2
= alloca (cnt
+ 6);
7252 /* Catch cases like trying to read memory or listing threads while
7253 we're waiting for a stop reply. The remote server wouldn't be
7254 ready to handle this request, so we'd hang and timeout. We don't
7255 have to worry about this in synchronous mode, because in that
7256 case it's not possible to issue a command while the target is
7257 running. This is not a problem in non-stop mode, because in that
7258 case, the stub is always ready to process serial input. */
7259 if (!non_stop
&& target_can_async_p () && rs
->waiting_for_stop_reply
)
7260 error (_("Cannot execute this command while the target is running."));
7262 /* We're sending out a new packet. Make sure we don't look at a
7263 stale cached response. */
7264 rs
->cached_wait_status
= 0;
7266 /* Copy the packet into buffer BUF2, encapsulating it
7267 and giving it a checksum. */
7272 for (i
= 0; i
< cnt
; i
++)
7278 *p
++ = tohex ((csum
>> 4) & 0xf);
7279 *p
++ = tohex (csum
& 0xf);
7281 /* Send it over and over until we get a positive ack. */
7285 int started_error_output
= 0;
7289 struct cleanup
*old_chain
;
7293 str
= escape_buffer (buf2
, p
- buf2
);
7294 old_chain
= make_cleanup (xfree
, str
);
7295 fprintf_unfiltered (gdb_stdlog
, "Sending packet: %s...", str
);
7296 gdb_flush (gdb_stdlog
);
7297 do_cleanups (old_chain
);
7299 remote_serial_write (buf2
, p
- buf2
);
7301 /* If this is a no acks version of the remote protocol, send the
7302 packet and move on. */
7306 /* Read until either a timeout occurs (-2) or '+' is read.
7307 Handle any notification that arrives in the mean time. */
7310 ch
= readchar (remote_timeout
);
7318 case SERIAL_TIMEOUT
:
7321 if (started_error_output
)
7323 putchar_unfiltered ('\n');
7324 started_error_output
= 0;
7333 fprintf_unfiltered (gdb_stdlog
, "Ack\n");
7337 fprintf_unfiltered (gdb_stdlog
, "Nak\n");
7339 case SERIAL_TIMEOUT
:
7343 break; /* Retransmit buffer. */
7347 fprintf_unfiltered (gdb_stdlog
,
7348 "Packet instead of Ack, ignoring it\n");
7349 /* It's probably an old response sent because an ACK
7350 was lost. Gobble up the packet and ack it so it
7351 doesn't get retransmitted when we resend this
7354 remote_serial_write ("+", 1);
7355 continue; /* Now, go look for +. */
7362 /* If we got a notification, handle it, and go back to looking
7364 /* We've found the start of a notification. Now
7365 collect the data. */
7366 val
= read_frame (&rs
->buf
, &rs
->buf_size
);
7371 struct cleanup
*old_chain
;
7374 str
= escape_buffer (rs
->buf
, val
);
7375 old_chain
= make_cleanup (xfree
, str
);
7376 fprintf_unfiltered (gdb_stdlog
,
7377 " Notification received: %s\n",
7379 do_cleanups (old_chain
);
7381 handle_notification (rs
->notif_state
, rs
->buf
);
7382 /* We're in sync now, rewait for the ack. */
7389 if (!started_error_output
)
7391 started_error_output
= 1;
7392 fprintf_unfiltered (gdb_stdlog
, "putpkt: Junk: ");
7394 fputc_unfiltered (ch
& 0177, gdb_stdlog
);
7395 fprintf_unfiltered (gdb_stdlog
, "%s", rs
->buf
);
7404 if (!started_error_output
)
7406 started_error_output
= 1;
7407 fprintf_unfiltered (gdb_stdlog
, "putpkt: Junk: ");
7409 fputc_unfiltered (ch
& 0177, gdb_stdlog
);
7413 break; /* Here to retransmit. */
7417 /* This is wrong. If doing a long backtrace, the user should be
7418 able to get out next time we call QUIT, without anything as
7419 violent as interrupt_query. If we want to provide a way out of
7420 here without getting to the next QUIT, it should be based on
7421 hitting ^C twice as in remote_wait. */
7432 /* Come here after finding the start of a frame when we expected an
7433 ack. Do our best to discard the rest of this packet. */
7442 c
= readchar (remote_timeout
);
7445 case SERIAL_TIMEOUT
:
7446 /* Nothing we can do. */
7449 /* Discard the two bytes of checksum and stop. */
7450 c
= readchar (remote_timeout
);
7452 c
= readchar (remote_timeout
);
7455 case '*': /* Run length encoding. */
7456 /* Discard the repeat count. */
7457 c
= readchar (remote_timeout
);
7462 /* A regular character. */
7468 /* Come here after finding the start of the frame. Collect the rest
7469 into *BUF, verifying the checksum, length, and handling run-length
7470 compression. NUL terminate the buffer. If there is not enough room,
7471 expand *BUF using xrealloc.
7473 Returns -1 on error, number of characters in buffer (ignoring the
7474 trailing NULL) on success. (could be extended to return one of the
7475 SERIAL status indications). */
7478 read_frame (char **buf_p
,
7485 struct remote_state
*rs
= get_remote_state ();
7492 c
= readchar (remote_timeout
);
7495 case SERIAL_TIMEOUT
:
7497 fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog
);
7501 fputs_filtered ("Saw new packet start in middle of old one\n",
7503 return -1; /* Start a new packet, count retries. */
7506 unsigned char pktcsum
;
7512 check_0
= readchar (remote_timeout
);
7514 check_1
= readchar (remote_timeout
);
7516 if (check_0
== SERIAL_TIMEOUT
|| check_1
== SERIAL_TIMEOUT
)
7519 fputs_filtered ("Timeout in checksum, retrying\n",
7523 else if (check_0
< 0 || check_1
< 0)
7526 fputs_filtered ("Communication error in checksum\n",
7531 /* Don't recompute the checksum; with no ack packets we
7532 don't have any way to indicate a packet retransmission
7537 pktcsum
= (fromhex (check_0
) << 4) | fromhex (check_1
);
7538 if (csum
== pktcsum
)
7543 struct cleanup
*old_chain
;
7546 str
= escape_buffer (buf
, bc
);
7547 old_chain
= make_cleanup (xfree
, str
);
7548 fprintf_unfiltered (gdb_stdlog
,
7549 "Bad checksum, sentsum=0x%x, "
7550 "csum=0x%x, buf=%s\n",
7551 pktcsum
, csum
, str
);
7552 do_cleanups (old_chain
);
7554 /* Number of characters in buffer ignoring trailing
7558 case '*': /* Run length encoding. */
7563 c
= readchar (remote_timeout
);
7565 repeat
= c
- ' ' + 3; /* Compute repeat count. */
7567 /* The character before ``*'' is repeated. */
7569 if (repeat
> 0 && repeat
<= 255 && bc
> 0)
7571 if (bc
+ repeat
- 1 >= *sizeof_buf
- 1)
7573 /* Make some more room in the buffer. */
7574 *sizeof_buf
+= repeat
;
7575 *buf_p
= xrealloc (*buf_p
, *sizeof_buf
);
7579 memset (&buf
[bc
], buf
[bc
- 1], repeat
);
7585 printf_filtered (_("Invalid run length encoding: %s\n"), buf
);
7589 if (bc
>= *sizeof_buf
- 1)
7591 /* Make some more room in the buffer. */
7593 *buf_p
= xrealloc (*buf_p
, *sizeof_buf
);
7604 /* Read a packet from the remote machine, with error checking, and
7605 store it in *BUF. Resize *BUF using xrealloc if necessary to hold
7606 the result, and update *SIZEOF_BUF. If FOREVER, wait forever
7607 rather than timing out; this is used (in synchronous mode) to wait
7608 for a target that is is executing user code to stop. */
7609 /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we
7610 don't have to change all the calls to getpkt to deal with the
7611 return value, because at the moment I don't know what the right
7612 thing to do it for those. */
7620 timed_out
= getpkt_sane (buf
, sizeof_buf
, forever
);
7624 /* Read a packet from the remote machine, with error checking, and
7625 store it in *BUF. Resize *BUF using xrealloc if necessary to hold
7626 the result, and update *SIZEOF_BUF. If FOREVER, wait forever
7627 rather than timing out; this is used (in synchronous mode) to wait
7628 for a target that is is executing user code to stop. If FOREVER ==
7629 0, this function is allowed to time out gracefully and return an
7630 indication of this to the caller. Otherwise return the number of
7631 bytes read. If EXPECTING_NOTIF, consider receiving a notification
7632 enough reason to return to the caller. *IS_NOTIF is an output
7633 boolean that indicates whether *BUF holds a notification or not
7634 (a regular packet). */
7637 getpkt_or_notif_sane_1 (char **buf
, long *sizeof_buf
, int forever
,
7638 int expecting_notif
, int *is_notif
)
7640 struct remote_state
*rs
= get_remote_state ();
7646 /* We're reading a new response. Make sure we don't look at a
7647 previously cached response. */
7648 rs
->cached_wait_status
= 0;
7650 strcpy (*buf
, "timeout");
7653 timeout
= watchdog
> 0 ? watchdog
: -1;
7654 else if (expecting_notif
)
7655 timeout
= 0; /* There should already be a char in the buffer. If
7658 timeout
= remote_timeout
;
7662 /* Process any number of notifications, and then return when
7666 /* If we get a timeout or bad checksum, retry up to MAX_TRIES
7668 for (tries
= 1; tries
<= MAX_TRIES
; tries
++)
7670 /* This can loop forever if the remote side sends us
7671 characters continuously, but if it pauses, we'll get
7672 SERIAL_TIMEOUT from readchar because of timeout. Then
7673 we'll count that as a retry.
7675 Note that even when forever is set, we will only wait
7676 forever prior to the start of a packet. After that, we
7677 expect characters to arrive at a brisk pace. They should
7678 show up within remote_timeout intervals. */
7680 c
= readchar (timeout
);
7681 while (c
!= SERIAL_TIMEOUT
&& c
!= '$' && c
!= '%');
7683 if (c
== SERIAL_TIMEOUT
)
7685 if (expecting_notif
)
7686 return -1; /* Don't complain, it's normal to not get
7687 anything in this case. */
7689 if (forever
) /* Watchdog went off? Kill the target. */
7692 remote_unpush_target ();
7693 throw_error (TARGET_CLOSE_ERROR
,
7694 _("Watchdog timeout has expired. "
7695 "Target detached."));
7698 fputs_filtered ("Timed out.\n", gdb_stdlog
);
7702 /* We've found the start of a packet or notification.
7703 Now collect the data. */
7704 val
= read_frame (buf
, sizeof_buf
);
7709 remote_serial_write ("-", 1);
7712 if (tries
> MAX_TRIES
)
7714 /* We have tried hard enough, and just can't receive the
7715 packet/notification. Give up. */
7716 printf_unfiltered (_("Ignoring packet error, continuing...\n"));
7718 /* Skip the ack char if we're in no-ack mode. */
7719 if (!rs
->noack_mode
)
7720 remote_serial_write ("+", 1);
7724 /* If we got an ordinary packet, return that to our caller. */
7729 struct cleanup
*old_chain
;
7732 str
= escape_buffer (*buf
, val
);
7733 old_chain
= make_cleanup (xfree
, str
);
7734 fprintf_unfiltered (gdb_stdlog
, "Packet received: %s\n", str
);
7735 do_cleanups (old_chain
);
7738 /* Skip the ack char if we're in no-ack mode. */
7739 if (!rs
->noack_mode
)
7740 remote_serial_write ("+", 1);
7741 if (is_notif
!= NULL
)
7746 /* If we got a notification, handle it, and go back to looking
7750 gdb_assert (c
== '%');
7754 struct cleanup
*old_chain
;
7757 str
= escape_buffer (*buf
, val
);
7758 old_chain
= make_cleanup (xfree
, str
);
7759 fprintf_unfiltered (gdb_stdlog
,
7760 " Notification received: %s\n",
7762 do_cleanups (old_chain
);
7764 if (is_notif
!= NULL
)
7767 handle_notification (rs
->notif_state
, *buf
);
7769 /* Notifications require no acknowledgement. */
7771 if (expecting_notif
)
7778 getpkt_sane (char **buf
, long *sizeof_buf
, int forever
)
7780 return getpkt_or_notif_sane_1 (buf
, sizeof_buf
, forever
, 0, NULL
);
7784 getpkt_or_notif_sane (char **buf
, long *sizeof_buf
, int forever
,
7787 return getpkt_or_notif_sane_1 (buf
, sizeof_buf
, forever
, 1,
7793 remote_kill (struct target_ops
*ops
)
7795 volatile struct gdb_exception ex
;
7797 /* Catch errors so the user can quit from gdb even when we
7798 aren't on speaking terms with the remote system. */
7799 TRY_CATCH (ex
, RETURN_MASK_ERROR
)
7805 if (ex
.error
== TARGET_CLOSE_ERROR
)
7807 /* If we got an (EOF) error that caused the target
7808 to go away, then we're done, that's what we wanted.
7809 "k" is susceptible to cause a premature EOF, given
7810 that the remote server isn't actually required to
7811 reply to "k", and it can happen that it doesn't
7812 even get to reply ACK to the "k". */
7816 /* Otherwise, something went wrong. We didn't actually kill
7817 the target. Just propagate the exception, and let the
7818 user or higher layers decide what to do. */
7819 throw_exception (ex
);
7822 /* We've killed the remote end, we get to mourn it. Since this is
7823 target remote, single-process, mourning the inferior also
7824 unpushes remote_ops. */
7825 target_mourn_inferior ();
7829 remote_vkill (int pid
, struct remote_state
*rs
)
7831 if (remote_protocol_packets
[PACKET_vKill
].support
== PACKET_DISABLE
)
7834 /* Tell the remote target to detach. */
7835 xsnprintf (rs
->buf
, get_remote_packet_size (), "vKill;%x", pid
);
7837 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7839 if (packet_ok (rs
->buf
,
7840 &remote_protocol_packets
[PACKET_vKill
]) == PACKET_OK
)
7842 else if (remote_protocol_packets
[PACKET_vKill
].support
== PACKET_DISABLE
)
7849 extended_remote_kill (struct target_ops
*ops
)
7852 int pid
= ptid_get_pid (inferior_ptid
);
7853 struct remote_state
*rs
= get_remote_state ();
7855 res
= remote_vkill (pid
, rs
);
7856 if (res
== -1 && !(rs
->extended
&& remote_multi_process_p (rs
)))
7858 /* Don't try 'k' on a multi-process aware stub -- it has no way
7859 to specify the pid. */
7863 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7864 if (rs
->buf
[0] != 'O' || rs
->buf
[0] != 'K')
7867 /* Don't wait for it to die. I'm not really sure it matters whether
7868 we do or not. For the existing stubs, kill is a noop. */
7874 error (_("Can't kill process"));
7876 target_mourn_inferior ();
7880 remote_mourn (struct target_ops
*ops
)
7882 remote_mourn_1 (ops
);
7885 /* Worker function for remote_mourn. */
7887 remote_mourn_1 (struct target_ops
*target
)
7889 unpush_target (target
);
7891 /* remote_close takes care of doing most of the clean up. */
7892 generic_mourn_inferior ();
7896 extended_remote_mourn_1 (struct target_ops
*target
)
7898 struct remote_state
*rs
= get_remote_state ();
7900 /* In case we got here due to an error, but we're going to stay
7902 rs
->waiting_for_stop_reply
= 0;
7904 /* If the current general thread belonged to the process we just
7905 detached from or has exited, the remote side current general
7906 thread becomes undefined. Considering a case like this:
7908 - We just got here due to a detach.
7909 - The process that we're detaching from happens to immediately
7910 report a global breakpoint being hit in non-stop mode, in the
7911 same thread we had selected before.
7912 - GDB attaches to this process again.
7913 - This event happens to be the next event we handle.
7915 GDB would consider that the current general thread didn't need to
7916 be set on the stub side (with Hg), since for all it knew,
7917 GENERAL_THREAD hadn't changed.
7919 Notice that although in all-stop mode, the remote server always
7920 sets the current thread to the thread reporting the stop event,
7921 that doesn't happen in non-stop mode; in non-stop, the stub *must
7922 not* change the current thread when reporting a breakpoint hit,
7923 due to the decoupling of event reporting and event handling.
7925 To keep things simple, we always invalidate our notion of the
7927 record_currthread (rs
, minus_one_ptid
);
7929 /* Unlike "target remote", we do not want to unpush the target; then
7930 the next time the user says "run", we won't be connected. */
7932 /* Call common code to mark the inferior as not running. */
7933 generic_mourn_inferior ();
7935 if (!have_inferiors ())
7937 if (!remote_multi_process_p (rs
))
7939 /* Check whether the target is running now - some remote stubs
7940 automatically restart after kill. */
7942 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7944 if (rs
->buf
[0] == 'S' || rs
->buf
[0] == 'T')
7946 /* Assume that the target has been restarted. Set
7947 inferior_ptid so that bits of core GDB realizes
7948 there's something here, e.g., so that the user can
7949 say "kill" again. */
7950 inferior_ptid
= magic_null_ptid
;
7957 extended_remote_mourn (struct target_ops
*ops
)
7959 extended_remote_mourn_1 (ops
);
7963 extended_remote_supports_disable_randomization (struct target_ops
*self
)
7965 return (remote_protocol_packets
[PACKET_QDisableRandomization
].support
7970 extended_remote_disable_randomization (int val
)
7972 struct remote_state
*rs
= get_remote_state ();
7975 xsnprintf (rs
->buf
, get_remote_packet_size (), "QDisableRandomization:%x",
7978 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
7980 error (_("Target does not support QDisableRandomization."));
7981 if (strcmp (reply
, "OK") != 0)
7982 error (_("Bogus QDisableRandomization reply from target: %s"), reply
);
7986 extended_remote_run (char *args
)
7988 struct remote_state
*rs
= get_remote_state ();
7991 /* If the user has disabled vRun support, or we have detected that
7992 support is not available, do not try it. */
7993 if (remote_protocol_packets
[PACKET_vRun
].support
== PACKET_DISABLE
)
7996 strcpy (rs
->buf
, "vRun;");
7997 len
= strlen (rs
->buf
);
7999 if (strlen (remote_exec_file
) * 2 + len
>= get_remote_packet_size ())
8000 error (_("Remote file name too long for run packet"));
8001 len
+= 2 * bin2hex ((gdb_byte
*) remote_exec_file
, rs
->buf
+ len
,
8002 strlen (remote_exec_file
));
8004 gdb_assert (args
!= NULL
);
8007 struct cleanup
*back_to
;
8011 argv
= gdb_buildargv (args
);
8012 back_to
= make_cleanup ((void (*) (void *)) freeargv
, argv
);
8013 for (i
= 0; argv
[i
] != NULL
; i
++)
8015 if (strlen (argv
[i
]) * 2 + 1 + len
>= get_remote_packet_size ())
8016 error (_("Argument list too long for run packet"));
8017 rs
->buf
[len
++] = ';';
8018 len
+= 2 * bin2hex ((gdb_byte
*) argv
[i
], rs
->buf
+ len
,
8021 do_cleanups (back_to
);
8024 rs
->buf
[len
++] = '\0';
8027 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8029 if (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_vRun
]) == PACKET_OK
)
8031 /* We have a wait response. All is well. */
8034 else if (remote_protocol_packets
[PACKET_vRun
].support
== PACKET_DISABLE
)
8035 /* It wasn't disabled before, but it is now. */
8039 if (remote_exec_file
[0] == '\0')
8040 error (_("Running the default executable on the remote target failed; "
8041 "try \"set remote exec-file\"?"));
8043 error (_("Running \"%s\" on the remote target failed"),
8048 /* In the extended protocol we want to be able to do things like
8049 "run" and have them basically work as expected. So we need
8050 a special create_inferior function. We support changing the
8051 executable file and the command line arguments, but not the
8055 extended_remote_create_inferior (struct target_ops
*ops
,
8056 char *exec_file
, char *args
,
8057 char **env
, int from_tty
)
8061 struct remote_state
*rs
= get_remote_state ();
8063 /* If running asynchronously, register the target file descriptor
8064 with the event loop. */
8065 if (target_can_async_p ())
8066 target_async (inferior_event_handler
, 0);
8068 /* Disable address space randomization if requested (and supported). */
8069 if (extended_remote_supports_disable_randomization (ops
))
8070 extended_remote_disable_randomization (disable_randomization
);
8072 /* Now restart the remote server. */
8073 run_worked
= extended_remote_run (args
) != -1;
8076 /* vRun was not supported. Fail if we need it to do what the
8078 if (remote_exec_file
[0])
8079 error (_("Remote target does not support \"set remote exec-file\""));
8081 error (_("Remote target does not support \"set args\" or run <ARGS>"));
8083 /* Fall back to "R". */
8084 extended_remote_restart ();
8087 if (!have_inferiors ())
8089 /* Clean up from the last time we ran, before we mark the target
8090 running again. This will mark breakpoints uninserted, and
8091 get_offsets may insert breakpoints. */
8092 init_thread_list ();
8093 init_wait_for_inferior ();
8096 /* vRun's success return is a stop reply. */
8097 stop_reply
= run_worked
? rs
->buf
: NULL
;
8098 add_current_inferior_and_thread (stop_reply
);
8100 /* Get updated offsets, if the stub uses qOffsets. */
8105 /* Given a location's target info BP_TGT and the packet buffer BUF, output
8106 the list of conditions (in agent expression bytecode format), if any, the
8107 target needs to evaluate. The output is placed into the packet buffer
8108 started from BUF and ended at BUF_END. */
8111 remote_add_target_side_condition (struct gdbarch
*gdbarch
,
8112 struct bp_target_info
*bp_tgt
, char *buf
,
8115 struct agent_expr
*aexpr
= NULL
;
8118 char *buf_start
= buf
;
8120 if (VEC_empty (agent_expr_p
, bp_tgt
->conditions
))
8123 buf
+= strlen (buf
);
8124 xsnprintf (buf
, buf_end
- buf
, "%s", ";");
8127 /* Send conditions to the target and free the vector. */
8129 VEC_iterate (agent_expr_p
, bp_tgt
->conditions
, ix
, aexpr
);
8132 xsnprintf (buf
, buf_end
- buf
, "X%x,", aexpr
->len
);
8133 buf
+= strlen (buf
);
8134 for (i
= 0; i
< aexpr
->len
; ++i
)
8135 buf
= pack_hex_byte (buf
, aexpr
->buf
[i
]);
8142 remote_add_target_side_commands (struct gdbarch
*gdbarch
,
8143 struct bp_target_info
*bp_tgt
, char *buf
)
8145 struct agent_expr
*aexpr
= NULL
;
8148 if (VEC_empty (agent_expr_p
, bp_tgt
->tcommands
))
8151 buf
+= strlen (buf
);
8153 sprintf (buf
, ";cmds:%x,", bp_tgt
->persist
);
8154 buf
+= strlen (buf
);
8156 /* Concatenate all the agent expressions that are commands into the
8159 VEC_iterate (agent_expr_p
, bp_tgt
->tcommands
, ix
, aexpr
);
8162 sprintf (buf
, "X%x,", aexpr
->len
);
8163 buf
+= strlen (buf
);
8164 for (i
= 0; i
< aexpr
->len
; ++i
)
8165 buf
= pack_hex_byte (buf
, aexpr
->buf
[i
]);
8170 /* Insert a breakpoint. On targets that have software breakpoint
8171 support, we ask the remote target to do the work; on targets
8172 which don't, we insert a traditional memory breakpoint. */
8175 remote_insert_breakpoint (struct target_ops
*ops
,
8176 struct gdbarch
*gdbarch
,
8177 struct bp_target_info
*bp_tgt
)
8179 /* Try the "Z" s/w breakpoint packet if it is not already disabled.
8180 If it succeeds, then set the support to PACKET_ENABLE. If it
8181 fails, and the user has explicitly requested the Z support then
8182 report an error, otherwise, mark it disabled and go on. */
8184 if (remote_protocol_packets
[PACKET_Z0
].support
!= PACKET_DISABLE
)
8186 CORE_ADDR addr
= bp_tgt
->placed_address
;
8187 struct remote_state
*rs
;
8190 struct condition_list
*cond
= NULL
;
8192 /* Make sure the remote is pointing at the right process, if
8194 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
8195 set_general_process ();
8197 gdbarch_remote_breakpoint_from_pc (gdbarch
, &addr
, &bpsize
);
8199 rs
= get_remote_state ();
8201 endbuf
= rs
->buf
+ get_remote_packet_size ();
8206 addr
= (ULONGEST
) remote_address_masked (addr
);
8207 p
+= hexnumstr (p
, addr
);
8208 xsnprintf (p
, endbuf
- p
, ",%d", bpsize
);
8210 if (remote_supports_cond_breakpoints (ops
))
8211 remote_add_target_side_condition (gdbarch
, bp_tgt
, p
, endbuf
);
8213 if (remote_can_run_breakpoint_commands (ops
))
8214 remote_add_target_side_commands (gdbarch
, bp_tgt
, p
);
8217 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8219 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
]))
8224 bp_tgt
->placed_address
= addr
;
8225 bp_tgt
->placed_size
= bpsize
;
8227 case PACKET_UNKNOWN
:
8232 /* If this breakpoint has target-side commands but this stub doesn't
8233 support Z0 packets, throw error. */
8234 if (!VEC_empty (agent_expr_p
, bp_tgt
->tcommands
))
8235 throw_error (NOT_SUPPORTED_ERROR
, _("\
8236 Target doesn't support breakpoints that have target side commands."));
8238 return memory_insert_breakpoint (ops
, gdbarch
, bp_tgt
);
8242 remote_remove_breakpoint (struct target_ops
*ops
,
8243 struct gdbarch
*gdbarch
,
8244 struct bp_target_info
*bp_tgt
)
8246 CORE_ADDR addr
= bp_tgt
->placed_address
;
8247 struct remote_state
*rs
= get_remote_state ();
8249 if (remote_protocol_packets
[PACKET_Z0
].support
!= PACKET_DISABLE
)
8252 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
8254 /* Make sure the remote is pointing at the right process, if
8256 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
8257 set_general_process ();
8263 addr
= (ULONGEST
) remote_address_masked (bp_tgt
->placed_address
);
8264 p
+= hexnumstr (p
, addr
);
8265 xsnprintf (p
, endbuf
- p
, ",%d", bp_tgt
->placed_size
);
8268 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8270 return (rs
->buf
[0] == 'E');
8273 return memory_remove_breakpoint (ops
, gdbarch
, bp_tgt
);
8277 watchpoint_to_Z_packet (int type
)
8282 return Z_PACKET_WRITE_WP
;
8285 return Z_PACKET_READ_WP
;
8288 return Z_PACKET_ACCESS_WP
;
8291 internal_error (__FILE__
, __LINE__
,
8292 _("hw_bp_to_z: bad watchpoint type %d"), type
);
8297 remote_insert_watchpoint (struct target_ops
*self
,
8298 CORE_ADDR addr
, int len
, int type
,
8299 struct expression
*cond
)
8301 struct remote_state
*rs
= get_remote_state ();
8302 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
8304 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
8306 if (remote_protocol_packets
[PACKET_Z0
+ packet
].support
== PACKET_DISABLE
)
8309 /* Make sure the remote is pointing at the right process, if
8311 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
8312 set_general_process ();
8314 xsnprintf (rs
->buf
, endbuf
- rs
->buf
, "Z%x,", packet
);
8315 p
= strchr (rs
->buf
, '\0');
8316 addr
= remote_address_masked (addr
);
8317 p
+= hexnumstr (p
, (ULONGEST
) addr
);
8318 xsnprintf (p
, endbuf
- p
, ",%x", len
);
8321 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8323 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
+ packet
]))
8327 case PACKET_UNKNOWN
:
8332 internal_error (__FILE__
, __LINE__
,
8333 _("remote_insert_watchpoint: reached end of function"));
8337 remote_watchpoint_addr_within_range (struct target_ops
*target
, CORE_ADDR addr
,
8338 CORE_ADDR start
, int length
)
8340 CORE_ADDR diff
= remote_address_masked (addr
- start
);
8342 return diff
< length
;
8347 remote_remove_watchpoint (struct target_ops
*self
,
8348 CORE_ADDR addr
, int len
, int type
,
8349 struct expression
*cond
)
8351 struct remote_state
*rs
= get_remote_state ();
8352 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
8354 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
8356 if (remote_protocol_packets
[PACKET_Z0
+ packet
].support
== PACKET_DISABLE
)
8359 /* Make sure the remote is pointing at the right process, if
8361 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
8362 set_general_process ();
8364 xsnprintf (rs
->buf
, endbuf
- rs
->buf
, "z%x,", packet
);
8365 p
= strchr (rs
->buf
, '\0');
8366 addr
= remote_address_masked (addr
);
8367 p
+= hexnumstr (p
, (ULONGEST
) addr
);
8368 xsnprintf (p
, endbuf
- p
, ",%x", len
);
8370 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8372 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
+ packet
]))
8375 case PACKET_UNKNOWN
:
8380 internal_error (__FILE__
, __LINE__
,
8381 _("remote_remove_watchpoint: reached end of function"));
8385 int remote_hw_watchpoint_limit
= -1;
8386 int remote_hw_watchpoint_length_limit
= -1;
8387 int remote_hw_breakpoint_limit
= -1;
8390 remote_region_ok_for_hw_watchpoint (struct target_ops
*self
,
8391 CORE_ADDR addr
, int len
)
8393 if (remote_hw_watchpoint_length_limit
== 0)
8395 else if (remote_hw_watchpoint_length_limit
< 0)
8397 else if (len
<= remote_hw_watchpoint_length_limit
)
8404 remote_check_watch_resources (struct target_ops
*self
,
8405 int type
, int cnt
, int ot
)
8407 if (type
== bp_hardware_breakpoint
)
8409 if (remote_hw_breakpoint_limit
== 0)
8411 else if (remote_hw_breakpoint_limit
< 0)
8413 else if (cnt
<= remote_hw_breakpoint_limit
)
8418 if (remote_hw_watchpoint_limit
== 0)
8420 else if (remote_hw_watchpoint_limit
< 0)
8424 else if (cnt
<= remote_hw_watchpoint_limit
)
8431 remote_stopped_by_watchpoint (struct target_ops
*ops
)
8433 struct remote_state
*rs
= get_remote_state ();
8435 return rs
->remote_stopped_by_watchpoint_p
;
8439 remote_stopped_data_address (struct target_ops
*target
, CORE_ADDR
*addr_p
)
8441 struct remote_state
*rs
= get_remote_state ();
8444 if (remote_stopped_by_watchpoint (target
))
8446 *addr_p
= rs
->remote_watch_data_address
;
8455 remote_insert_hw_breakpoint (struct target_ops
*self
, struct gdbarch
*gdbarch
,
8456 struct bp_target_info
*bp_tgt
)
8459 struct remote_state
*rs
;
8463 /* The length field should be set to the size of a breakpoint
8464 instruction, even though we aren't inserting one ourselves. */
8466 gdbarch_remote_breakpoint_from_pc
8467 (gdbarch
, &bp_tgt
->placed_address
, &bp_tgt
->placed_size
);
8469 if (remote_protocol_packets
[PACKET_Z1
].support
== PACKET_DISABLE
)
8472 /* Make sure the remote is pointing at the right process, if
8474 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
8475 set_general_process ();
8477 rs
= get_remote_state ();
8479 endbuf
= rs
->buf
+ get_remote_packet_size ();
8485 addr
= remote_address_masked (bp_tgt
->placed_address
);
8486 p
+= hexnumstr (p
, (ULONGEST
) addr
);
8487 xsnprintf (p
, endbuf
- p
, ",%x", bp_tgt
->placed_size
);
8489 if (remote_supports_cond_breakpoints (self
))
8490 remote_add_target_side_condition (gdbarch
, bp_tgt
, p
, endbuf
);
8492 if (remote_can_run_breakpoint_commands (self
))
8493 remote_add_target_side_commands (gdbarch
, bp_tgt
, p
);
8496 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8498 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z1
]))
8501 if (rs
->buf
[1] == '.')
8503 message
= strchr (rs
->buf
+ 2, '.');
8505 error (_("Remote failure reply: %s"), message
+ 1);
8508 case PACKET_UNKNOWN
:
8513 internal_error (__FILE__
, __LINE__
,
8514 _("remote_insert_hw_breakpoint: reached end of function"));
8519 remote_remove_hw_breakpoint (struct target_ops
*self
, struct gdbarch
*gdbarch
,
8520 struct bp_target_info
*bp_tgt
)
8523 struct remote_state
*rs
= get_remote_state ();
8525 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
8527 if (remote_protocol_packets
[PACKET_Z1
].support
== PACKET_DISABLE
)
8530 /* Make sure the remote is pointing at the right process, if
8532 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
8533 set_general_process ();
8539 addr
= remote_address_masked (bp_tgt
->placed_address
);
8540 p
+= hexnumstr (p
, (ULONGEST
) addr
);
8541 xsnprintf (p
, endbuf
- p
, ",%x", bp_tgt
->placed_size
);
8544 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8546 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z1
]))
8549 case PACKET_UNKNOWN
:
8554 internal_error (__FILE__
, __LINE__
,
8555 _("remote_remove_hw_breakpoint: reached end of function"));
8558 /* Verify memory using the "qCRC:" request. */
8561 remote_verify_memory (struct target_ops
*ops
,
8562 const gdb_byte
*data
, CORE_ADDR lma
, ULONGEST size
)
8564 struct remote_state
*rs
= get_remote_state ();
8565 unsigned long host_crc
, target_crc
;
8568 /* Make sure the remote is pointing at the right process. */
8569 set_general_process ();
8571 /* FIXME: assumes lma can fit into long. */
8572 xsnprintf (rs
->buf
, get_remote_packet_size (), "qCRC:%lx,%lx",
8573 (long) lma
, (long) size
);
8576 /* Be clever; compute the host_crc before waiting for target
8578 host_crc
= xcrc32 (data
, size
, 0xffffffff);
8580 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8581 if (rs
->buf
[0] == 'E')
8584 if (rs
->buf
[0] != 'C')
8585 error (_("remote target does not support this operation"));
8587 for (target_crc
= 0, tmp
= &rs
->buf
[1]; *tmp
; tmp
++)
8588 target_crc
= target_crc
* 16 + fromhex (*tmp
);
8590 return (host_crc
== target_crc
);
8593 /* compare-sections command
8595 With no arguments, compares each loadable section in the exec bfd
8596 with the same memory range on the target, and reports mismatches.
8597 Useful for verifying the image on the target against the exec file. */
8600 compare_sections_command (char *args
, int from_tty
)
8603 struct cleanup
*old_chain
;
8605 const char *sectname
;
8613 error (_("command cannot be used without an exec file"));
8615 /* Make sure the remote is pointing at the right process. */
8616 set_general_process ();
8618 for (s
= exec_bfd
->sections
; s
; s
= s
->next
)
8620 if (!(s
->flags
& SEC_LOAD
))
8621 continue; /* Skip non-loadable section. */
8623 size
= bfd_get_section_size (s
);
8625 continue; /* Skip zero-length section. */
8627 sectname
= bfd_get_section_name (exec_bfd
, s
);
8628 if (args
&& strcmp (args
, sectname
) != 0)
8629 continue; /* Not the section selected by user. */
8631 matched
= 1; /* Do this section. */
8634 sectdata
= xmalloc (size
);
8635 old_chain
= make_cleanup (xfree
, sectdata
);
8636 bfd_get_section_contents (exec_bfd
, s
, sectdata
, 0, size
);
8638 res
= target_verify_memory (sectdata
, lma
, size
);
8641 error (_("target memory fault, section %s, range %s -- %s"), sectname
,
8642 paddress (target_gdbarch (), lma
),
8643 paddress (target_gdbarch (), lma
+ size
));
8645 printf_filtered ("Section %s, range %s -- %s: ", sectname
,
8646 paddress (target_gdbarch (), lma
),
8647 paddress (target_gdbarch (), lma
+ size
));
8649 printf_filtered ("matched.\n");
8652 printf_filtered ("MIS-MATCHED!\n");
8656 do_cleanups (old_chain
);
8659 warning (_("One or more sections of the remote executable does not match\n\
8660 the loaded file\n"));
8661 if (args
&& !matched
)
8662 printf_filtered (_("No loaded section named '%s'.\n"), args
);
8665 /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET
8666 into remote target. The number of bytes written to the remote
8667 target is returned, or -1 for error. */
8669 static enum target_xfer_status
8670 remote_write_qxfer (struct target_ops
*ops
, const char *object_name
,
8671 const char *annex
, const gdb_byte
*writebuf
,
8672 ULONGEST offset
, LONGEST len
, ULONGEST
*xfered_len
,
8673 struct packet_config
*packet
)
8677 struct remote_state
*rs
= get_remote_state ();
8678 int max_size
= get_memory_write_packet_size ();
8680 if (packet
->support
== PACKET_DISABLE
)
8681 return TARGET_XFER_E_IO
;
8683 /* Insert header. */
8684 i
= snprintf (rs
->buf
, max_size
,
8685 "qXfer:%s:write:%s:%s:",
8686 object_name
, annex
? annex
: "",
8687 phex_nz (offset
, sizeof offset
));
8688 max_size
-= (i
+ 1);
8690 /* Escape as much data as fits into rs->buf. */
8691 buf_len
= remote_escape_output
8692 (writebuf
, len
, (gdb_byte
*) rs
->buf
+ i
, &max_size
, max_size
);
8694 if (putpkt_binary (rs
->buf
, i
+ buf_len
) < 0
8695 || getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) < 0
8696 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
8697 return TARGET_XFER_E_IO
;
8699 unpack_varlen_hex (rs
->buf
, &n
);
8702 return TARGET_XFER_OK
;
8705 /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet.
8706 Data at OFFSET, of up to LEN bytes, is read into READBUF; the
8707 number of bytes read is returned, or 0 for EOF, or -1 for error.
8708 The number of bytes read may be less than LEN without indicating an
8709 EOF. PACKET is checked and updated to indicate whether the remote
8710 target supports this object. */
8712 static enum target_xfer_status
8713 remote_read_qxfer (struct target_ops
*ops
, const char *object_name
,
8715 gdb_byte
*readbuf
, ULONGEST offset
, LONGEST len
,
8716 ULONGEST
*xfered_len
,
8717 struct packet_config
*packet
)
8719 struct remote_state
*rs
= get_remote_state ();
8720 LONGEST i
, n
, packet_len
;
8722 if (packet
->support
== PACKET_DISABLE
)
8723 return TARGET_XFER_E_IO
;
8725 /* Check whether we've cached an end-of-object packet that matches
8727 if (rs
->finished_object
)
8729 if (strcmp (object_name
, rs
->finished_object
) == 0
8730 && strcmp (annex
? annex
: "", rs
->finished_annex
) == 0
8731 && offset
== rs
->finished_offset
)
8732 return TARGET_XFER_EOF
;
8735 /* Otherwise, we're now reading something different. Discard
8737 xfree (rs
->finished_object
);
8738 xfree (rs
->finished_annex
);
8739 rs
->finished_object
= NULL
;
8740 rs
->finished_annex
= NULL
;
8743 /* Request only enough to fit in a single packet. The actual data
8744 may not, since we don't know how much of it will need to be escaped;
8745 the target is free to respond with slightly less data. We subtract
8746 five to account for the response type and the protocol frame. */
8747 n
= min (get_remote_packet_size () - 5, len
);
8748 snprintf (rs
->buf
, get_remote_packet_size () - 4, "qXfer:%s:read:%s:%s,%s",
8749 object_name
, annex
? annex
: "",
8750 phex_nz (offset
, sizeof offset
),
8751 phex_nz (n
, sizeof n
));
8752 i
= putpkt (rs
->buf
);
8754 return TARGET_XFER_E_IO
;
8757 packet_len
= getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0);
8758 if (packet_len
< 0 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
8759 return TARGET_XFER_E_IO
;
8761 if (rs
->buf
[0] != 'l' && rs
->buf
[0] != 'm')
8762 error (_("Unknown remote qXfer reply: %s"), rs
->buf
);
8764 /* 'm' means there is (or at least might be) more data after this
8765 batch. That does not make sense unless there's at least one byte
8766 of data in this reply. */
8767 if (rs
->buf
[0] == 'm' && packet_len
== 1)
8768 error (_("Remote qXfer reply contained no data."));
8770 /* Got some data. */
8771 i
= remote_unescape_input ((gdb_byte
*) rs
->buf
+ 1,
8772 packet_len
- 1, readbuf
, n
);
8774 /* 'l' is an EOF marker, possibly including a final block of data,
8775 or possibly empty. If we have the final block of a non-empty
8776 object, record this fact to bypass a subsequent partial read. */
8777 if (rs
->buf
[0] == 'l' && offset
+ i
> 0)
8779 rs
->finished_object
= xstrdup (object_name
);
8780 rs
->finished_annex
= xstrdup (annex
? annex
: "");
8781 rs
->finished_offset
= offset
+ i
;
8785 return TARGET_XFER_EOF
;
8789 return TARGET_XFER_OK
;
8793 static enum target_xfer_status
8794 remote_xfer_partial (struct target_ops
*ops
, enum target_object object
,
8795 const char *annex
, gdb_byte
*readbuf
,
8796 const gdb_byte
*writebuf
, ULONGEST offset
, ULONGEST len
,
8797 ULONGEST
*xfered_len
)
8799 struct remote_state
*rs
;
8804 set_remote_traceframe ();
8805 set_general_thread (inferior_ptid
);
8807 rs
= get_remote_state ();
8809 /* Handle memory using the standard memory routines. */
8810 if (object
== TARGET_OBJECT_MEMORY
)
8812 /* If the remote target is connected but not running, we should
8813 pass this request down to a lower stratum (e.g. the executable
8815 if (!target_has_execution
)
8816 return TARGET_XFER_EOF
;
8818 if (writebuf
!= NULL
)
8819 return remote_write_bytes (offset
, writebuf
, len
, xfered_len
);
8821 return remote_read_bytes (ops
, offset
, readbuf
, len
, xfered_len
);
8824 /* Handle SPU memory using qxfer packets. */
8825 if (object
== TARGET_OBJECT_SPU
)
8828 return remote_read_qxfer (ops
, "spu", annex
, readbuf
, offset
, len
,
8829 xfered_len
, &remote_protocol_packets
8830 [PACKET_qXfer_spu_read
]);
8832 return remote_write_qxfer (ops
, "spu", annex
, writebuf
, offset
, len
,
8833 xfered_len
, &remote_protocol_packets
8834 [PACKET_qXfer_spu_write
]);
8837 /* Handle extra signal info using qxfer packets. */
8838 if (object
== TARGET_OBJECT_SIGNAL_INFO
)
8841 return remote_read_qxfer (ops
, "siginfo", annex
, readbuf
, offset
, len
,
8842 xfered_len
, &remote_protocol_packets
8843 [PACKET_qXfer_siginfo_read
]);
8845 return remote_write_qxfer (ops
, "siginfo", annex
,
8846 writebuf
, offset
, len
, xfered_len
,
8847 &remote_protocol_packets
8848 [PACKET_qXfer_siginfo_write
]);
8851 if (object
== TARGET_OBJECT_STATIC_TRACE_DATA
)
8854 return remote_read_qxfer (ops
, "statictrace", annex
,
8855 readbuf
, offset
, len
, xfered_len
,
8856 &remote_protocol_packets
8857 [PACKET_qXfer_statictrace_read
]);
8859 return TARGET_XFER_E_IO
;
8862 /* Only handle flash writes. */
8863 if (writebuf
!= NULL
)
8869 case TARGET_OBJECT_FLASH
:
8870 return remote_flash_write (ops
, offset
, len
, xfered_len
,
8874 return TARGET_XFER_E_IO
;
8878 /* Map pre-existing objects onto letters. DO NOT do this for new
8879 objects!!! Instead specify new query packets. */
8882 case TARGET_OBJECT_AVR
:
8886 case TARGET_OBJECT_AUXV
:
8887 gdb_assert (annex
== NULL
);
8888 return remote_read_qxfer (ops
, "auxv", annex
, readbuf
, offset
, len
,
8890 &remote_protocol_packets
[PACKET_qXfer_auxv
]);
8892 case TARGET_OBJECT_AVAILABLE_FEATURES
:
8893 return remote_read_qxfer
8894 (ops
, "features", annex
, readbuf
, offset
, len
, xfered_len
,
8895 &remote_protocol_packets
[PACKET_qXfer_features
]);
8897 case TARGET_OBJECT_LIBRARIES
:
8898 return remote_read_qxfer
8899 (ops
, "libraries", annex
, readbuf
, offset
, len
, xfered_len
,
8900 &remote_protocol_packets
[PACKET_qXfer_libraries
]);
8902 case TARGET_OBJECT_LIBRARIES_SVR4
:
8903 return remote_read_qxfer
8904 (ops
, "libraries-svr4", annex
, readbuf
, offset
, len
, xfered_len
,
8905 &remote_protocol_packets
[PACKET_qXfer_libraries_svr4
]);
8907 case TARGET_OBJECT_MEMORY_MAP
:
8908 gdb_assert (annex
== NULL
);
8909 return remote_read_qxfer (ops
, "memory-map", annex
, readbuf
, offset
, len
,
8911 &remote_protocol_packets
[PACKET_qXfer_memory_map
]);
8913 case TARGET_OBJECT_OSDATA
:
8914 /* Should only get here if we're connected. */
8915 gdb_assert (rs
->remote_desc
);
8916 return remote_read_qxfer
8917 (ops
, "osdata", annex
, readbuf
, offset
, len
, xfered_len
,
8918 &remote_protocol_packets
[PACKET_qXfer_osdata
]);
8920 case TARGET_OBJECT_THREADS
:
8921 gdb_assert (annex
== NULL
);
8922 return remote_read_qxfer (ops
, "threads", annex
, readbuf
, offset
, len
,
8924 &remote_protocol_packets
[PACKET_qXfer_threads
]);
8926 case TARGET_OBJECT_TRACEFRAME_INFO
:
8927 gdb_assert (annex
== NULL
);
8928 return remote_read_qxfer
8929 (ops
, "traceframe-info", annex
, readbuf
, offset
, len
, xfered_len
,
8930 &remote_protocol_packets
[PACKET_qXfer_traceframe_info
]);
8932 case TARGET_OBJECT_FDPIC
:
8933 return remote_read_qxfer (ops
, "fdpic", annex
, readbuf
, offset
, len
,
8935 &remote_protocol_packets
[PACKET_qXfer_fdpic
]);
8937 case TARGET_OBJECT_OPENVMS_UIB
:
8938 return remote_read_qxfer (ops
, "uib", annex
, readbuf
, offset
, len
,
8940 &remote_protocol_packets
[PACKET_qXfer_uib
]);
8942 case TARGET_OBJECT_BTRACE
:
8943 return remote_read_qxfer (ops
, "btrace", annex
, readbuf
, offset
, len
,
8945 &remote_protocol_packets
[PACKET_qXfer_btrace
]);
8948 return TARGET_XFER_E_IO
;
8951 /* Note: a zero OFFSET and LEN can be used to query the minimum
8953 if (offset
== 0 && len
== 0)
8954 return (get_remote_packet_size ());
8955 /* Minimum outbuf size is get_remote_packet_size (). If LEN is not
8956 large enough let the caller deal with it. */
8957 if (len
< get_remote_packet_size ())
8958 return TARGET_XFER_E_IO
;
8959 len
= get_remote_packet_size ();
8961 /* Except for querying the minimum buffer size, target must be open. */
8962 if (!rs
->remote_desc
)
8963 error (_("remote query is only available after target open"));
8965 gdb_assert (annex
!= NULL
);
8966 gdb_assert (readbuf
!= NULL
);
8972 /* We used one buffer char for the remote protocol q command and
8973 another for the query type. As the remote protocol encapsulation
8974 uses 4 chars plus one extra in case we are debugging
8975 (remote_debug), we have PBUFZIZ - 7 left to pack the query
8978 while (annex
[i
] && (i
< (get_remote_packet_size () - 8)))
8980 /* Bad caller may have sent forbidden characters. */
8981 gdb_assert (isprint (annex
[i
]) && annex
[i
] != '$' && annex
[i
] != '#');
8986 gdb_assert (annex
[i
] == '\0');
8988 i
= putpkt (rs
->buf
);
8990 return TARGET_XFER_E_IO
;
8992 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8993 strcpy ((char *) readbuf
, rs
->buf
);
8995 *xfered_len
= strlen ((char *) readbuf
);
8996 return TARGET_XFER_OK
;
9000 remote_search_memory (struct target_ops
* ops
,
9001 CORE_ADDR start_addr
, ULONGEST search_space_len
,
9002 const gdb_byte
*pattern
, ULONGEST pattern_len
,
9003 CORE_ADDR
*found_addrp
)
9005 int addr_size
= gdbarch_addr_bit (target_gdbarch ()) / 8;
9006 struct remote_state
*rs
= get_remote_state ();
9007 int max_size
= get_memory_write_packet_size ();
9008 struct packet_config
*packet
=
9009 &remote_protocol_packets
[PACKET_qSearch_memory
];
9010 /* Number of packet bytes used to encode the pattern;
9011 this could be more than PATTERN_LEN due to escape characters. */
9012 int escaped_pattern_len
;
9013 /* Amount of pattern that was encodable in the packet. */
9014 int used_pattern_len
;
9017 ULONGEST found_addr
;
9019 /* Don't go to the target if we don't have to.
9020 This is done before checking packet->support to avoid the possibility that
9021 a success for this edge case means the facility works in general. */
9022 if (pattern_len
> search_space_len
)
9024 if (pattern_len
== 0)
9026 *found_addrp
= start_addr
;
9030 /* If we already know the packet isn't supported, fall back to the simple
9031 way of searching memory. */
9033 if (packet
->support
== PACKET_DISABLE
)
9035 /* Target doesn't provided special support, fall back and use the
9036 standard support (copy memory and do the search here). */
9037 return simple_search_memory (ops
, start_addr
, search_space_len
,
9038 pattern
, pattern_len
, found_addrp
);
9041 /* Make sure the remote is pointing at the right process. */
9042 set_general_process ();
9044 /* Insert header. */
9045 i
= snprintf (rs
->buf
, max_size
,
9046 "qSearch:memory:%s;%s;",
9047 phex_nz (start_addr
, addr_size
),
9048 phex_nz (search_space_len
, sizeof (search_space_len
)));
9049 max_size
-= (i
+ 1);
9051 /* Escape as much data as fits into rs->buf. */
9052 escaped_pattern_len
=
9053 remote_escape_output (pattern
, pattern_len
, (gdb_byte
*) rs
->buf
+ i
,
9054 &used_pattern_len
, max_size
);
9056 /* Bail if the pattern is too large. */
9057 if (used_pattern_len
!= pattern_len
)
9058 error (_("Pattern is too large to transmit to remote target."));
9060 if (putpkt_binary (rs
->buf
, i
+ escaped_pattern_len
) < 0
9061 || getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) < 0
9062 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
9064 /* The request may not have worked because the command is not
9065 supported. If so, fall back to the simple way. */
9066 if (packet
->support
== PACKET_DISABLE
)
9068 return simple_search_memory (ops
, start_addr
, search_space_len
,
9069 pattern
, pattern_len
, found_addrp
);
9074 if (rs
->buf
[0] == '0')
9076 else if (rs
->buf
[0] == '1')
9079 if (rs
->buf
[1] != ',')
9080 error (_("Unknown qSearch:memory reply: %s"), rs
->buf
);
9081 unpack_varlen_hex (rs
->buf
+ 2, &found_addr
);
9082 *found_addrp
= found_addr
;
9085 error (_("Unknown qSearch:memory reply: %s"), rs
->buf
);
9091 remote_rcmd (struct target_ops
*self
, char *command
,
9092 struct ui_file
*outbuf
)
9094 struct remote_state
*rs
= get_remote_state ();
9097 if (!rs
->remote_desc
)
9098 error (_("remote rcmd is only available after target open"));
9100 /* Send a NULL command across as an empty command. */
9101 if (command
== NULL
)
9104 /* The query prefix. */
9105 strcpy (rs
->buf
, "qRcmd,");
9106 p
= strchr (rs
->buf
, '\0');
9108 if ((strlen (rs
->buf
) + strlen (command
) * 2 + 8/*misc*/)
9109 > get_remote_packet_size ())
9110 error (_("\"monitor\" command ``%s'' is too long."), command
);
9112 /* Encode the actual command. */
9113 bin2hex ((gdb_byte
*) command
, p
, strlen (command
));
9115 if (putpkt (rs
->buf
) < 0)
9116 error (_("Communication problem with target."));
9118 /* get/display the response */
9123 /* XXX - see also remote_get_noisy_reply(). */
9124 QUIT
; /* Allow user to bail out with ^C. */
9126 if (getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) == -1)
9128 /* Timeout. Continue to (try to) read responses.
9129 This is better than stopping with an error, assuming the stub
9130 is still executing the (long) monitor command.
9131 If needed, the user can interrupt gdb using C-c, obtaining
9132 an effect similar to stop on timeout. */
9137 error (_("Target does not support this command."));
9138 if (buf
[0] == 'O' && buf
[1] != 'K')
9140 remote_console_output (buf
+ 1); /* 'O' message from stub. */
9143 if (strcmp (buf
, "OK") == 0)
9145 if (strlen (buf
) == 3 && buf
[0] == 'E'
9146 && isdigit (buf
[1]) && isdigit (buf
[2]))
9148 error (_("Protocol error with Rcmd"));
9150 for (p
= buf
; p
[0] != '\0' && p
[1] != '\0'; p
+= 2)
9152 char c
= (fromhex (p
[0]) << 4) + fromhex (p
[1]);
9154 fputc_unfiltered (c
, outbuf
);
9160 static VEC(mem_region_s
) *
9161 remote_memory_map (struct target_ops
*ops
)
9163 VEC(mem_region_s
) *result
= NULL
;
9164 char *text
= target_read_stralloc (¤t_target
,
9165 TARGET_OBJECT_MEMORY_MAP
, NULL
);
9169 struct cleanup
*back_to
= make_cleanup (xfree
, text
);
9171 result
= parse_memory_map (text
);
9172 do_cleanups (back_to
);
9179 packet_command (char *args
, int from_tty
)
9181 struct remote_state
*rs
= get_remote_state ();
9183 if (!rs
->remote_desc
)
9184 error (_("command can only be used with remote target"));
9187 error (_("remote-packet command requires packet text as argument"));
9189 puts_filtered ("sending: ");
9190 print_packet (args
);
9191 puts_filtered ("\n");
9194 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9195 puts_filtered ("received: ");
9196 print_packet (rs
->buf
);
9197 puts_filtered ("\n");
9201 /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */
9203 static void display_thread_info (struct gdb_ext_thread_info
*info
);
9205 static void threadset_test_cmd (char *cmd
, int tty
);
9207 static void threadalive_test (char *cmd
, int tty
);
9209 static void threadlist_test_cmd (char *cmd
, int tty
);
9211 int get_and_display_threadinfo (threadref
*ref
);
9213 static void threadinfo_test_cmd (char *cmd
, int tty
);
9215 static int thread_display_step (threadref
*ref
, void *context
);
9217 static void threadlist_update_test_cmd (char *cmd
, int tty
);
9219 static void init_remote_threadtests (void);
9221 #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */
9224 threadset_test_cmd (char *cmd
, int tty
)
9226 int sample_thread
= SAMPLE_THREAD
;
9228 printf_filtered (_("Remote threadset test\n"));
9229 set_general_thread (sample_thread
);
9234 threadalive_test (char *cmd
, int tty
)
9236 int sample_thread
= SAMPLE_THREAD
;
9237 int pid
= ptid_get_pid (inferior_ptid
);
9238 ptid_t ptid
= ptid_build (pid
, sample_thread
, 0);
9240 if (remote_thread_alive (ptid
))
9241 printf_filtered ("PASS: Thread alive test\n");
9243 printf_filtered ("FAIL: Thread alive test\n");
9246 void output_threadid (char *title
, threadref
*ref
);
9249 output_threadid (char *title
, threadref
*ref
)
9253 pack_threadid (&hexid
[0], ref
); /* Convert threead id into hex. */
9255 printf_filtered ("%s %s\n", title
, (&hexid
[0]));
9259 threadlist_test_cmd (char *cmd
, int tty
)
9262 threadref nextthread
;
9263 int done
, result_count
;
9264 threadref threadlist
[3];
9266 printf_filtered ("Remote Threadlist test\n");
9267 if (!remote_get_threadlist (startflag
, &nextthread
, 3, &done
,
9268 &result_count
, &threadlist
[0]))
9269 printf_filtered ("FAIL: threadlist test\n");
9272 threadref
*scan
= threadlist
;
9273 threadref
*limit
= scan
+ result_count
;
9275 while (scan
< limit
)
9276 output_threadid (" thread ", scan
++);
9281 display_thread_info (struct gdb_ext_thread_info
*info
)
9283 output_threadid ("Threadid: ", &info
->threadid
);
9284 printf_filtered ("Name: %s\n ", info
->shortname
);
9285 printf_filtered ("State: %s\n", info
->display
);
9286 printf_filtered ("other: %s\n\n", info
->more_display
);
9290 get_and_display_threadinfo (threadref
*ref
)
9294 struct gdb_ext_thread_info threadinfo
;
9296 set
= TAG_THREADID
| TAG_EXISTS
| TAG_THREADNAME
9297 | TAG_MOREDISPLAY
| TAG_DISPLAY
;
9298 if (0 != (result
= remote_get_threadinfo (ref
, set
, &threadinfo
)))
9299 display_thread_info (&threadinfo
);
9304 threadinfo_test_cmd (char *cmd
, int tty
)
9306 int athread
= SAMPLE_THREAD
;
9310 int_to_threadref (&thread
, athread
);
9311 printf_filtered ("Remote Threadinfo test\n");
9312 if (!get_and_display_threadinfo (&thread
))
9313 printf_filtered ("FAIL cannot get thread info\n");
9317 thread_display_step (threadref
*ref
, void *context
)
9319 /* output_threadid(" threadstep ",ref); *//* simple test */
9320 return get_and_display_threadinfo (ref
);
9324 threadlist_update_test_cmd (char *cmd
, int tty
)
9326 printf_filtered ("Remote Threadlist update test\n");
9327 remote_threadlist_iterator (thread_display_step
, 0, CRAZY_MAX_THREADS
);
9331 init_remote_threadtests (void)
9333 add_com ("tlist", class_obscure
, threadlist_test_cmd
,
9334 _("Fetch and print the remote list of "
9335 "thread identifiers, one pkt only"));
9336 add_com ("tinfo", class_obscure
, threadinfo_test_cmd
,
9337 _("Fetch and display info about one thread"));
9338 add_com ("tset", class_obscure
, threadset_test_cmd
,
9339 _("Test setting to a different thread"));
9340 add_com ("tupd", class_obscure
, threadlist_update_test_cmd
,
9341 _("Iterate through updating all remote thread info"));
9342 add_com ("talive", class_obscure
, threadalive_test
,
9343 _(" Remote thread alive test "));
9348 /* Convert a thread ID to a string. Returns the string in a static
9352 remote_pid_to_str (struct target_ops
*ops
, ptid_t ptid
)
9354 static char buf
[64];
9355 struct remote_state
*rs
= get_remote_state ();
9357 if (ptid_equal (ptid
, null_ptid
))
9358 return normal_pid_to_str (ptid
);
9359 else if (ptid_is_pid (ptid
))
9361 /* Printing an inferior target id. */
9363 /* When multi-process extensions are off, there's no way in the
9364 remote protocol to know the remote process id, if there's any
9365 at all. There's one exception --- when we're connected with
9366 target extended-remote, and we manually attached to a process
9367 with "attach PID". We don't record anywhere a flag that
9368 allows us to distinguish that case from the case of
9369 connecting with extended-remote and the stub already being
9370 attached to a process, and reporting yes to qAttached, hence
9371 no smart special casing here. */
9372 if (!remote_multi_process_p (rs
))
9374 xsnprintf (buf
, sizeof buf
, "Remote target");
9378 return normal_pid_to_str (ptid
);
9382 if (ptid_equal (magic_null_ptid
, ptid
))
9383 xsnprintf (buf
, sizeof buf
, "Thread <main>");
9384 else if (rs
->extended
&& remote_multi_process_p (rs
))
9385 xsnprintf (buf
, sizeof buf
, "Thread %d.%ld",
9386 ptid_get_pid (ptid
), ptid_get_lwp (ptid
));
9388 xsnprintf (buf
, sizeof buf
, "Thread %ld",
9389 ptid_get_lwp (ptid
));
9394 /* Get the address of the thread local variable in OBJFILE which is
9395 stored at OFFSET within the thread local storage for thread PTID. */
9398 remote_get_thread_local_address (struct target_ops
*ops
,
9399 ptid_t ptid
, CORE_ADDR lm
, CORE_ADDR offset
)
9401 if (remote_protocol_packets
[PACKET_qGetTLSAddr
].support
!= PACKET_DISABLE
)
9403 struct remote_state
*rs
= get_remote_state ();
9405 char *endp
= rs
->buf
+ get_remote_packet_size ();
9406 enum packet_result result
;
9408 strcpy (p
, "qGetTLSAddr:");
9410 p
= write_ptid (p
, endp
, ptid
);
9412 p
+= hexnumstr (p
, offset
);
9414 p
+= hexnumstr (p
, lm
);
9418 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9419 result
= packet_ok (rs
->buf
,
9420 &remote_protocol_packets
[PACKET_qGetTLSAddr
]);
9421 if (result
== PACKET_OK
)
9425 unpack_varlen_hex (rs
->buf
, &result
);
9428 else if (result
== PACKET_UNKNOWN
)
9429 throw_error (TLS_GENERIC_ERROR
,
9430 _("Remote target doesn't support qGetTLSAddr packet"));
9432 throw_error (TLS_GENERIC_ERROR
,
9433 _("Remote target failed to process qGetTLSAddr request"));
9436 throw_error (TLS_GENERIC_ERROR
,
9437 _("TLS not supported or disabled on this target"));
9442 /* Provide thread local base, i.e. Thread Information Block address.
9443 Returns 1 if ptid is found and thread_local_base is non zero. */
9446 remote_get_tib_address (struct target_ops
*self
, ptid_t ptid
, CORE_ADDR
*addr
)
9448 if (remote_protocol_packets
[PACKET_qGetTIBAddr
].support
!= PACKET_DISABLE
)
9450 struct remote_state
*rs
= get_remote_state ();
9452 char *endp
= rs
->buf
+ get_remote_packet_size ();
9453 enum packet_result result
;
9455 strcpy (p
, "qGetTIBAddr:");
9457 p
= write_ptid (p
, endp
, ptid
);
9461 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9462 result
= packet_ok (rs
->buf
,
9463 &remote_protocol_packets
[PACKET_qGetTIBAddr
]);
9464 if (result
== PACKET_OK
)
9468 unpack_varlen_hex (rs
->buf
, &result
);
9470 *addr
= (CORE_ADDR
) result
;
9473 else if (result
== PACKET_UNKNOWN
)
9474 error (_("Remote target doesn't support qGetTIBAddr packet"));
9476 error (_("Remote target failed to process qGetTIBAddr request"));
9479 error (_("qGetTIBAddr not supported or disabled on this target"));
9484 /* Support for inferring a target description based on the current
9485 architecture and the size of a 'g' packet. While the 'g' packet
9486 can have any size (since optional registers can be left off the
9487 end), some sizes are easily recognizable given knowledge of the
9488 approximate architecture. */
9490 struct remote_g_packet_guess
9493 const struct target_desc
*tdesc
;
9495 typedef struct remote_g_packet_guess remote_g_packet_guess_s
;
9496 DEF_VEC_O(remote_g_packet_guess_s
);
9498 struct remote_g_packet_data
9500 VEC(remote_g_packet_guess_s
) *guesses
;
9503 static struct gdbarch_data
*remote_g_packet_data_handle
;
9506 remote_g_packet_data_init (struct obstack
*obstack
)
9508 return OBSTACK_ZALLOC (obstack
, struct remote_g_packet_data
);
9512 register_remote_g_packet_guess (struct gdbarch
*gdbarch
, int bytes
,
9513 const struct target_desc
*tdesc
)
9515 struct remote_g_packet_data
*data
9516 = gdbarch_data (gdbarch
, remote_g_packet_data_handle
);
9517 struct remote_g_packet_guess new_guess
, *guess
;
9520 gdb_assert (tdesc
!= NULL
);
9523 VEC_iterate (remote_g_packet_guess_s
, data
->guesses
, ix
, guess
);
9525 if (guess
->bytes
== bytes
)
9526 internal_error (__FILE__
, __LINE__
,
9527 _("Duplicate g packet description added for size %d"),
9530 new_guess
.bytes
= bytes
;
9531 new_guess
.tdesc
= tdesc
;
9532 VEC_safe_push (remote_g_packet_guess_s
, data
->guesses
, &new_guess
);
9535 /* Return 1 if remote_read_description would do anything on this target
9536 and architecture, 0 otherwise. */
9539 remote_read_description_p (struct target_ops
*target
)
9541 struct remote_g_packet_data
*data
9542 = gdbarch_data (target_gdbarch (), remote_g_packet_data_handle
);
9544 if (!VEC_empty (remote_g_packet_guess_s
, data
->guesses
))
9550 static const struct target_desc
*
9551 remote_read_description (struct target_ops
*target
)
9553 struct remote_g_packet_data
*data
9554 = gdbarch_data (target_gdbarch (), remote_g_packet_data_handle
);
9556 /* Do not try this during initial connection, when we do not know
9557 whether there is a running but stopped thread. */
9558 if (!target_has_execution
|| ptid_equal (inferior_ptid
, null_ptid
))
9559 return target
->beneath
->to_read_description (target
->beneath
);
9561 if (!VEC_empty (remote_g_packet_guess_s
, data
->guesses
))
9563 struct remote_g_packet_guess
*guess
;
9565 int bytes
= send_g_packet ();
9568 VEC_iterate (remote_g_packet_guess_s
, data
->guesses
, ix
, guess
);
9570 if (guess
->bytes
== bytes
)
9571 return guess
->tdesc
;
9573 /* We discard the g packet. A minor optimization would be to
9574 hold on to it, and fill the register cache once we have selected
9575 an architecture, but it's too tricky to do safely. */
9578 return target
->beneath
->to_read_description (target
->beneath
);
9581 /* Remote file transfer support. This is host-initiated I/O, not
9582 target-initiated; for target-initiated, see remote-fileio.c. */
9584 /* If *LEFT is at least the length of STRING, copy STRING to
9585 *BUFFER, update *BUFFER to point to the new end of the buffer, and
9586 decrease *LEFT. Otherwise raise an error. */
9589 remote_buffer_add_string (char **buffer
, int *left
, char *string
)
9591 int len
= strlen (string
);
9594 error (_("Packet too long for target."));
9596 memcpy (*buffer
, string
, len
);
9600 /* NUL-terminate the buffer as a convenience, if there is
9606 /* If *LEFT is large enough, hex encode LEN bytes from BYTES into
9607 *BUFFER, update *BUFFER to point to the new end of the buffer, and
9608 decrease *LEFT. Otherwise raise an error. */
9611 remote_buffer_add_bytes (char **buffer
, int *left
, const gdb_byte
*bytes
,
9614 if (2 * len
> *left
)
9615 error (_("Packet too long for target."));
9617 bin2hex (bytes
, *buffer
, len
);
9621 /* NUL-terminate the buffer as a convenience, if there is
9627 /* If *LEFT is large enough, convert VALUE to hex and add it to
9628 *BUFFER, update *BUFFER to point to the new end of the buffer, and
9629 decrease *LEFT. Otherwise raise an error. */
9632 remote_buffer_add_int (char **buffer
, int *left
, ULONGEST value
)
9634 int len
= hexnumlen (value
);
9637 error (_("Packet too long for target."));
9639 hexnumstr (*buffer
, value
);
9643 /* NUL-terminate the buffer as a convenience, if there is
9649 /* Parse an I/O result packet from BUFFER. Set RETCODE to the return
9650 value, *REMOTE_ERRNO to the remote error number or zero if none
9651 was included, and *ATTACHMENT to point to the start of the annex
9652 if any. The length of the packet isn't needed here; there may
9653 be NUL bytes in BUFFER, but they will be after *ATTACHMENT.
9655 Return 0 if the packet could be parsed, -1 if it could not. If
9656 -1 is returned, the other variables may not be initialized. */
9659 remote_hostio_parse_result (char *buffer
, int *retcode
,
9660 int *remote_errno
, char **attachment
)
9667 if (buffer
[0] != 'F')
9671 *retcode
= strtol (&buffer
[1], &p
, 16);
9672 if (errno
!= 0 || p
== &buffer
[1])
9675 /* Check for ",errno". */
9679 *remote_errno
= strtol (p
+ 1, &p2
, 16);
9680 if (errno
!= 0 || p
+ 1 == p2
)
9685 /* Check for ";attachment". If there is no attachment, the
9686 packet should end here. */
9689 *attachment
= p
+ 1;
9692 else if (*p
== '\0')
9698 /* Send a prepared I/O packet to the target and read its response.
9699 The prepared packet is in the global RS->BUF before this function
9700 is called, and the answer is there when we return.
9702 COMMAND_BYTES is the length of the request to send, which may include
9703 binary data. WHICH_PACKET is the packet configuration to check
9704 before attempting a packet. If an error occurs, *REMOTE_ERRNO
9705 is set to the error number and -1 is returned. Otherwise the value
9706 returned by the function is returned.
9708 ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an
9709 attachment is expected; an error will be reported if there's a
9710 mismatch. If one is found, *ATTACHMENT will be set to point into
9711 the packet buffer and *ATTACHMENT_LEN will be set to the
9712 attachment's length. */
9715 remote_hostio_send_command (int command_bytes
, int which_packet
,
9716 int *remote_errno
, char **attachment
,
9717 int *attachment_len
)
9719 struct remote_state
*rs
= get_remote_state ();
9720 int ret
, bytes_read
;
9721 char *attachment_tmp
;
9723 if (!rs
->remote_desc
9724 || remote_protocol_packets
[which_packet
].support
== PACKET_DISABLE
)
9726 *remote_errno
= FILEIO_ENOSYS
;
9730 putpkt_binary (rs
->buf
, command_bytes
);
9731 bytes_read
= getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0);
9733 /* If it timed out, something is wrong. Don't try to parse the
9737 *remote_errno
= FILEIO_EINVAL
;
9741 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[which_packet
]))
9744 *remote_errno
= FILEIO_EINVAL
;
9746 case PACKET_UNKNOWN
:
9747 *remote_errno
= FILEIO_ENOSYS
;
9753 if (remote_hostio_parse_result (rs
->buf
, &ret
, remote_errno
,
9756 *remote_errno
= FILEIO_EINVAL
;
9760 /* Make sure we saw an attachment if and only if we expected one. */
9761 if ((attachment_tmp
== NULL
&& attachment
!= NULL
)
9762 || (attachment_tmp
!= NULL
&& attachment
== NULL
))
9764 *remote_errno
= FILEIO_EINVAL
;
9768 /* If an attachment was found, it must point into the packet buffer;
9769 work out how many bytes there were. */
9770 if (attachment_tmp
!= NULL
)
9772 *attachment
= attachment_tmp
;
9773 *attachment_len
= bytes_read
- (*attachment
- rs
->buf
);
9779 /* Open FILENAME on the remote target, using FLAGS and MODE. Return a
9780 remote file descriptor, or -1 if an error occurs (and set
9784 remote_hostio_open (struct target_ops
*self
,
9785 const char *filename
, int flags
, int mode
,
9788 struct remote_state
*rs
= get_remote_state ();
9790 int left
= get_remote_packet_size () - 1;
9792 remote_buffer_add_string (&p
, &left
, "vFile:open:");
9794 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
9796 remote_buffer_add_string (&p
, &left
, ",");
9798 remote_buffer_add_int (&p
, &left
, flags
);
9799 remote_buffer_add_string (&p
, &left
, ",");
9801 remote_buffer_add_int (&p
, &left
, mode
);
9803 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_open
,
9804 remote_errno
, NULL
, NULL
);
9807 /* Write up to LEN bytes from WRITE_BUF to FD on the remote target.
9808 Return the number of bytes written, or -1 if an error occurs (and
9809 set *REMOTE_ERRNO). */
9812 remote_hostio_pwrite (struct target_ops
*self
,
9813 int fd
, const gdb_byte
*write_buf
, int len
,
9814 ULONGEST offset
, int *remote_errno
)
9816 struct remote_state
*rs
= get_remote_state ();
9818 int left
= get_remote_packet_size ();
9821 remote_buffer_add_string (&p
, &left
, "vFile:pwrite:");
9823 remote_buffer_add_int (&p
, &left
, fd
);
9824 remote_buffer_add_string (&p
, &left
, ",");
9826 remote_buffer_add_int (&p
, &left
, offset
);
9827 remote_buffer_add_string (&p
, &left
, ",");
9829 p
+= remote_escape_output (write_buf
, len
, (gdb_byte
*) p
, &out_len
,
9830 get_remote_packet_size () - (p
- rs
->buf
));
9832 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_pwrite
,
9833 remote_errno
, NULL
, NULL
);
9836 /* Read up to LEN bytes FD on the remote target into READ_BUF
9837 Return the number of bytes read, or -1 if an error occurs (and
9838 set *REMOTE_ERRNO). */
9841 remote_hostio_pread (struct target_ops
*self
,
9842 int fd
, gdb_byte
*read_buf
, int len
,
9843 ULONGEST offset
, int *remote_errno
)
9845 struct remote_state
*rs
= get_remote_state ();
9848 int left
= get_remote_packet_size ();
9849 int ret
, attachment_len
;
9852 remote_buffer_add_string (&p
, &left
, "vFile:pread:");
9854 remote_buffer_add_int (&p
, &left
, fd
);
9855 remote_buffer_add_string (&p
, &left
, ",");
9857 remote_buffer_add_int (&p
, &left
, len
);
9858 remote_buffer_add_string (&p
, &left
, ",");
9860 remote_buffer_add_int (&p
, &left
, offset
);
9862 ret
= remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_pread
,
9863 remote_errno
, &attachment
,
9869 read_len
= remote_unescape_input ((gdb_byte
*) attachment
, attachment_len
,
9871 if (read_len
!= ret
)
9872 error (_("Read returned %d, but %d bytes."), ret
, (int) read_len
);
9877 /* Close FD on the remote target. Return 0, or -1 if an error occurs
9878 (and set *REMOTE_ERRNO). */
9881 remote_hostio_close (struct target_ops
*self
, int fd
, int *remote_errno
)
9883 struct remote_state
*rs
= get_remote_state ();
9885 int left
= get_remote_packet_size () - 1;
9887 remote_buffer_add_string (&p
, &left
, "vFile:close:");
9889 remote_buffer_add_int (&p
, &left
, fd
);
9891 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_close
,
9892 remote_errno
, NULL
, NULL
);
9895 /* Unlink FILENAME on the remote target. Return 0, or -1 if an error
9896 occurs (and set *REMOTE_ERRNO). */
9899 remote_hostio_unlink (struct target_ops
*self
,
9900 const char *filename
, int *remote_errno
)
9902 struct remote_state
*rs
= get_remote_state ();
9904 int left
= get_remote_packet_size () - 1;
9906 remote_buffer_add_string (&p
, &left
, "vFile:unlink:");
9908 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
9911 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_unlink
,
9912 remote_errno
, NULL
, NULL
);
9915 /* Read value of symbolic link FILENAME on the remote target. Return
9916 a null-terminated string allocated via xmalloc, or NULL if an error
9917 occurs (and set *REMOTE_ERRNO). */
9920 remote_hostio_readlink (struct target_ops
*self
,
9921 const char *filename
, int *remote_errno
)
9923 struct remote_state
*rs
= get_remote_state ();
9926 int left
= get_remote_packet_size ();
9927 int len
, attachment_len
;
9931 remote_buffer_add_string (&p
, &left
, "vFile:readlink:");
9933 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
9936 len
= remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_readlink
,
9937 remote_errno
, &attachment
,
9943 ret
= xmalloc (len
+ 1);
9945 read_len
= remote_unescape_input ((gdb_byte
*) attachment
, attachment_len
,
9946 (gdb_byte
*) ret
, len
);
9947 if (read_len
!= len
)
9948 error (_("Readlink returned %d, but %d bytes."), len
, read_len
);
9955 remote_fileio_errno_to_host (int errnum
)
9979 case FILEIO_ENOTDIR
:
9999 case FILEIO_ENAMETOOLONG
:
10000 return ENAMETOOLONG
;
10006 remote_hostio_error (int errnum
)
10008 int host_error
= remote_fileio_errno_to_host (errnum
);
10010 if (host_error
== -1)
10011 error (_("Unknown remote I/O error %d"), errnum
);
10013 error (_("Remote I/O error: %s"), safe_strerror (host_error
));
10017 remote_hostio_close_cleanup (void *opaque
)
10019 int fd
= *(int *) opaque
;
10022 remote_hostio_close (find_target_at (process_stratum
), fd
, &remote_errno
);
10027 remote_bfd_iovec_open (struct bfd
*abfd
, void *open_closure
)
10029 const char *filename
= bfd_get_filename (abfd
);
10030 int fd
, remote_errno
;
10033 gdb_assert (remote_filename_p (filename
));
10035 fd
= remote_hostio_open (find_target_at (process_stratum
),
10036 filename
+ 7, FILEIO_O_RDONLY
, 0, &remote_errno
);
10039 errno
= remote_fileio_errno_to_host (remote_errno
);
10040 bfd_set_error (bfd_error_system_call
);
10044 stream
= xmalloc (sizeof (int));
10050 remote_bfd_iovec_close (struct bfd
*abfd
, void *stream
)
10052 int fd
= *(int *)stream
;
10057 /* Ignore errors on close; these may happen if the remote
10058 connection was already torn down. */
10059 remote_hostio_close (find_target_at (process_stratum
), fd
, &remote_errno
);
10061 /* Zero means success. */
10066 remote_bfd_iovec_pread (struct bfd
*abfd
, void *stream
, void *buf
,
10067 file_ptr nbytes
, file_ptr offset
)
10069 int fd
= *(int *)stream
;
10071 file_ptr pos
, bytes
;
10074 while (nbytes
> pos
)
10076 bytes
= remote_hostio_pread (find_target_at (process_stratum
),
10077 fd
, (gdb_byte
*) buf
+ pos
, nbytes
- pos
,
10078 offset
+ pos
, &remote_errno
);
10080 /* Success, but no bytes, means end-of-file. */
10084 errno
= remote_fileio_errno_to_host (remote_errno
);
10085 bfd_set_error (bfd_error_system_call
);
10096 remote_bfd_iovec_stat (struct bfd
*abfd
, void *stream
, struct stat
*sb
)
10098 /* FIXME: We should probably implement remote_hostio_stat. */
10099 sb
->st_size
= INT_MAX
;
10104 remote_filename_p (const char *filename
)
10106 return strncmp (filename
,
10107 REMOTE_SYSROOT_PREFIX
,
10108 sizeof (REMOTE_SYSROOT_PREFIX
) - 1) == 0;
10112 remote_bfd_open (const char *remote_file
, const char *target
)
10114 bfd
*abfd
= gdb_bfd_openr_iovec (remote_file
, target
,
10115 remote_bfd_iovec_open
, NULL
,
10116 remote_bfd_iovec_pread
,
10117 remote_bfd_iovec_close
,
10118 remote_bfd_iovec_stat
);
10124 remote_file_put (const char *local_file
, const char *remote_file
, int from_tty
)
10126 struct cleanup
*back_to
, *close_cleanup
;
10127 int retcode
, fd
, remote_errno
, bytes
, io_size
;
10130 int bytes_in_buffer
;
10133 struct remote_state
*rs
= get_remote_state ();
10135 if (!rs
->remote_desc
)
10136 error (_("command can only be used with remote target"));
10138 file
= gdb_fopen_cloexec (local_file
, "rb");
10140 perror_with_name (local_file
);
10141 back_to
= make_cleanup_fclose (file
);
10143 fd
= remote_hostio_open (find_target_at (process_stratum
),
10144 remote_file
, (FILEIO_O_WRONLY
| FILEIO_O_CREAT
10146 0700, &remote_errno
);
10148 remote_hostio_error (remote_errno
);
10150 /* Send up to this many bytes at once. They won't all fit in the
10151 remote packet limit, so we'll transfer slightly fewer. */
10152 io_size
= get_remote_packet_size ();
10153 buffer
= xmalloc (io_size
);
10154 make_cleanup (xfree
, buffer
);
10156 close_cleanup
= make_cleanup (remote_hostio_close_cleanup
, &fd
);
10158 bytes_in_buffer
= 0;
10161 while (bytes_in_buffer
|| !saw_eof
)
10165 bytes
= fread (buffer
+ bytes_in_buffer
, 1,
10166 io_size
- bytes_in_buffer
,
10171 error (_("Error reading %s."), local_file
);
10174 /* EOF. Unless there is something still in the
10175 buffer from the last iteration, we are done. */
10177 if (bytes_in_buffer
== 0)
10185 bytes
+= bytes_in_buffer
;
10186 bytes_in_buffer
= 0;
10188 retcode
= remote_hostio_pwrite (find_target_at (process_stratum
),
10190 offset
, &remote_errno
);
10193 remote_hostio_error (remote_errno
);
10194 else if (retcode
== 0)
10195 error (_("Remote write of %d bytes returned 0!"), bytes
);
10196 else if (retcode
< bytes
)
10198 /* Short write. Save the rest of the read data for the next
10200 bytes_in_buffer
= bytes
- retcode
;
10201 memmove (buffer
, buffer
+ retcode
, bytes_in_buffer
);
10207 discard_cleanups (close_cleanup
);
10208 if (remote_hostio_close (find_target_at (process_stratum
), fd
, &remote_errno
))
10209 remote_hostio_error (remote_errno
);
10212 printf_filtered (_("Successfully sent file \"%s\".\n"), local_file
);
10213 do_cleanups (back_to
);
10217 remote_file_get (const char *remote_file
, const char *local_file
, int from_tty
)
10219 struct cleanup
*back_to
, *close_cleanup
;
10220 int fd
, remote_errno
, bytes
, io_size
;
10224 struct remote_state
*rs
= get_remote_state ();
10226 if (!rs
->remote_desc
)
10227 error (_("command can only be used with remote target"));
10229 fd
= remote_hostio_open (find_target_at (process_stratum
),
10230 remote_file
, FILEIO_O_RDONLY
, 0, &remote_errno
);
10232 remote_hostio_error (remote_errno
);
10234 file
= gdb_fopen_cloexec (local_file
, "wb");
10236 perror_with_name (local_file
);
10237 back_to
= make_cleanup_fclose (file
);
10239 /* Send up to this many bytes at once. They won't all fit in the
10240 remote packet limit, so we'll transfer slightly fewer. */
10241 io_size
= get_remote_packet_size ();
10242 buffer
= xmalloc (io_size
);
10243 make_cleanup (xfree
, buffer
);
10245 close_cleanup
= make_cleanup (remote_hostio_close_cleanup
, &fd
);
10250 bytes
= remote_hostio_pread (find_target_at (process_stratum
),
10251 fd
, buffer
, io_size
, offset
, &remote_errno
);
10253 /* Success, but no bytes, means end-of-file. */
10256 remote_hostio_error (remote_errno
);
10260 bytes
= fwrite (buffer
, 1, bytes
, file
);
10262 perror_with_name (local_file
);
10265 discard_cleanups (close_cleanup
);
10266 if (remote_hostio_close (find_target_at (process_stratum
), fd
, &remote_errno
))
10267 remote_hostio_error (remote_errno
);
10270 printf_filtered (_("Successfully fetched file \"%s\".\n"), remote_file
);
10271 do_cleanups (back_to
);
10275 remote_file_delete (const char *remote_file
, int from_tty
)
10277 int retcode
, remote_errno
;
10278 struct remote_state
*rs
= get_remote_state ();
10280 if (!rs
->remote_desc
)
10281 error (_("command can only be used with remote target"));
10283 retcode
= remote_hostio_unlink (find_target_at (process_stratum
),
10284 remote_file
, &remote_errno
);
10286 remote_hostio_error (remote_errno
);
10289 printf_filtered (_("Successfully deleted file \"%s\".\n"), remote_file
);
10293 remote_put_command (char *args
, int from_tty
)
10295 struct cleanup
*back_to
;
10299 error_no_arg (_("file to put"));
10301 argv
= gdb_buildargv (args
);
10302 back_to
= make_cleanup_freeargv (argv
);
10303 if (argv
[0] == NULL
|| argv
[1] == NULL
|| argv
[2] != NULL
)
10304 error (_("Invalid parameters to remote put"));
10306 remote_file_put (argv
[0], argv
[1], from_tty
);
10308 do_cleanups (back_to
);
10312 remote_get_command (char *args
, int from_tty
)
10314 struct cleanup
*back_to
;
10318 error_no_arg (_("file to get"));
10320 argv
= gdb_buildargv (args
);
10321 back_to
= make_cleanup_freeargv (argv
);
10322 if (argv
[0] == NULL
|| argv
[1] == NULL
|| argv
[2] != NULL
)
10323 error (_("Invalid parameters to remote get"));
10325 remote_file_get (argv
[0], argv
[1], from_tty
);
10327 do_cleanups (back_to
);
10331 remote_delete_command (char *args
, int from_tty
)
10333 struct cleanup
*back_to
;
10337 error_no_arg (_("file to delete"));
10339 argv
= gdb_buildargv (args
);
10340 back_to
= make_cleanup_freeargv (argv
);
10341 if (argv
[0] == NULL
|| argv
[1] != NULL
)
10342 error (_("Invalid parameters to remote delete"));
10344 remote_file_delete (argv
[0], from_tty
);
10346 do_cleanups (back_to
);
10350 remote_command (char *args
, int from_tty
)
10352 help_list (remote_cmdlist
, "remote ", -1, gdb_stdout
);
10356 remote_can_execute_reverse (struct target_ops
*self
)
10358 if (remote_protocol_packets
[PACKET_bs
].support
== PACKET_ENABLE
10359 || remote_protocol_packets
[PACKET_bc
].support
== PACKET_ENABLE
)
10366 remote_supports_non_stop (struct target_ops
*self
)
10372 remote_supports_disable_randomization (struct target_ops
*self
)
10374 /* Only supported in extended mode. */
10379 remote_supports_multi_process (struct target_ops
*self
)
10381 struct remote_state
*rs
= get_remote_state ();
10383 /* Only extended-remote handles being attached to multiple
10384 processes, even though plain remote can use the multi-process
10385 thread id extensions, so that GDB knows the target process's
10387 return rs
->extended
&& remote_multi_process_p (rs
);
10391 remote_supports_cond_tracepoints (void)
10393 struct remote_state
*rs
= get_remote_state ();
10395 return rs
->cond_tracepoints
;
10399 remote_supports_cond_breakpoints (struct target_ops
*self
)
10401 struct remote_state
*rs
= get_remote_state ();
10403 return rs
->cond_breakpoints
;
10407 remote_supports_fast_tracepoints (void)
10409 struct remote_state
*rs
= get_remote_state ();
10411 return rs
->fast_tracepoints
;
10415 remote_supports_static_tracepoints (void)
10417 struct remote_state
*rs
= get_remote_state ();
10419 return rs
->static_tracepoints
;
10423 remote_supports_install_in_trace (void)
10425 struct remote_state
*rs
= get_remote_state ();
10427 return rs
->install_in_trace
;
10431 remote_supports_enable_disable_tracepoint (struct target_ops
*self
)
10433 struct remote_state
*rs
= get_remote_state ();
10435 return rs
->enable_disable_tracepoints
;
10439 remote_supports_string_tracing (struct target_ops
*self
)
10441 struct remote_state
*rs
= get_remote_state ();
10443 return rs
->string_tracing
;
10447 remote_can_run_breakpoint_commands (struct target_ops
*self
)
10449 struct remote_state
*rs
= get_remote_state ();
10451 return rs
->breakpoint_commands
;
10455 remote_trace_init (struct target_ops
*self
)
10458 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10459 if (strcmp (target_buf
, "OK") != 0)
10460 error (_("Target does not support this command."));
10463 static void free_actions_list (char **actions_list
);
10464 static void free_actions_list_cleanup_wrapper (void *);
10466 free_actions_list_cleanup_wrapper (void *al
)
10468 free_actions_list (al
);
10472 free_actions_list (char **actions_list
)
10476 if (actions_list
== 0)
10479 for (ndx
= 0; actions_list
[ndx
]; ndx
++)
10480 xfree (actions_list
[ndx
]);
10482 xfree (actions_list
);
10485 /* Recursive routine to walk through command list including loops, and
10486 download packets for each command. */
10489 remote_download_command_source (int num
, ULONGEST addr
,
10490 struct command_line
*cmds
)
10492 struct remote_state
*rs
= get_remote_state ();
10493 struct command_line
*cmd
;
10495 for (cmd
= cmds
; cmd
; cmd
= cmd
->next
)
10497 QUIT
; /* Allow user to bail out with ^C. */
10498 strcpy (rs
->buf
, "QTDPsrc:");
10499 encode_source_string (num
, addr
, "cmd", cmd
->line
,
10500 rs
->buf
+ strlen (rs
->buf
),
10501 rs
->buf_size
- strlen (rs
->buf
));
10503 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10504 if (strcmp (target_buf
, "OK"))
10505 warning (_("Target does not support source download."));
10507 if (cmd
->control_type
== while_control
10508 || cmd
->control_type
== while_stepping_control
)
10510 remote_download_command_source (num
, addr
, *cmd
->body_list
);
10512 QUIT
; /* Allow user to bail out with ^C. */
10513 strcpy (rs
->buf
, "QTDPsrc:");
10514 encode_source_string (num
, addr
, "cmd", "end",
10515 rs
->buf
+ strlen (rs
->buf
),
10516 rs
->buf_size
- strlen (rs
->buf
));
10518 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10519 if (strcmp (target_buf
, "OK"))
10520 warning (_("Target does not support source download."));
10526 remote_download_tracepoint (struct target_ops
*self
, struct bp_location
*loc
)
10528 #define BUF_SIZE 2048
10532 char buf
[BUF_SIZE
];
10533 char **tdp_actions
;
10534 char **stepping_actions
;
10536 struct cleanup
*old_chain
= NULL
;
10537 struct agent_expr
*aexpr
;
10538 struct cleanup
*aexpr_chain
= NULL
;
10540 struct breakpoint
*b
= loc
->owner
;
10541 struct tracepoint
*t
= (struct tracepoint
*) b
;
10543 encode_actions_rsp (loc
, &tdp_actions
, &stepping_actions
);
10544 old_chain
= make_cleanup (free_actions_list_cleanup_wrapper
,
10546 (void) make_cleanup (free_actions_list_cleanup_wrapper
,
10549 tpaddr
= loc
->address
;
10550 sprintf_vma (addrbuf
, tpaddr
);
10551 xsnprintf (buf
, BUF_SIZE
, "QTDP:%x:%s:%c:%lx:%x", b
->number
,
10552 addrbuf
, /* address */
10553 (b
->enable_state
== bp_enabled
? 'E' : 'D'),
10554 t
->step_count
, t
->pass_count
);
10555 /* Fast tracepoints are mostly handled by the target, but we can
10556 tell the target how big of an instruction block should be moved
10558 if (b
->type
== bp_fast_tracepoint
)
10560 /* Only test for support at download time; we may not know
10561 target capabilities at definition time. */
10562 if (remote_supports_fast_tracepoints ())
10566 if (gdbarch_fast_tracepoint_valid_at (target_gdbarch (),
10567 tpaddr
, &isize
, NULL
))
10568 xsnprintf (buf
+ strlen (buf
), BUF_SIZE
- strlen (buf
), ":F%x",
10571 /* If it passed validation at definition but fails now,
10572 something is very wrong. */
10573 internal_error (__FILE__
, __LINE__
,
10574 _("Fast tracepoint not "
10575 "valid during download"));
10578 /* Fast tracepoints are functionally identical to regular
10579 tracepoints, so don't take lack of support as a reason to
10580 give up on the trace run. */
10581 warning (_("Target does not support fast tracepoints, "
10582 "downloading %d as regular tracepoint"), b
->number
);
10584 else if (b
->type
== bp_static_tracepoint
)
10586 /* Only test for support at download time; we may not know
10587 target capabilities at definition time. */
10588 if (remote_supports_static_tracepoints ())
10590 struct static_tracepoint_marker marker
;
10592 if (target_static_tracepoint_marker_at (tpaddr
, &marker
))
10593 strcat (buf
, ":S");
10595 error (_("Static tracepoint not valid during download"));
10598 /* Fast tracepoints are functionally identical to regular
10599 tracepoints, so don't take lack of support as a reason
10600 to give up on the trace run. */
10601 error (_("Target does not support static tracepoints"));
10603 /* If the tracepoint has a conditional, make it into an agent
10604 expression and append to the definition. */
10607 /* Only test support at download time, we may not know target
10608 capabilities at definition time. */
10609 if (remote_supports_cond_tracepoints ())
10611 aexpr
= gen_eval_for_expr (tpaddr
, loc
->cond
);
10612 aexpr_chain
= make_cleanup_free_agent_expr (aexpr
);
10613 xsnprintf (buf
+ strlen (buf
), BUF_SIZE
- strlen (buf
), ":X%x,",
10615 pkt
= buf
+ strlen (buf
);
10616 for (ndx
= 0; ndx
< aexpr
->len
; ++ndx
)
10617 pkt
= pack_hex_byte (pkt
, aexpr
->buf
[ndx
]);
10619 do_cleanups (aexpr_chain
);
10622 warning (_("Target does not support conditional tracepoints, "
10623 "ignoring tp %d cond"), b
->number
);
10626 if (b
->commands
|| *default_collect
)
10629 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10630 if (strcmp (target_buf
, "OK"))
10631 error (_("Target does not support tracepoints."));
10633 /* do_single_steps (t); */
10636 for (ndx
= 0; tdp_actions
[ndx
]; ndx
++)
10638 QUIT
; /* Allow user to bail out with ^C. */
10639 xsnprintf (buf
, BUF_SIZE
, "QTDP:-%x:%s:%s%c",
10640 b
->number
, addrbuf
, /* address */
10642 ((tdp_actions
[ndx
+ 1] || stepping_actions
)
10645 remote_get_noisy_reply (&target_buf
,
10647 if (strcmp (target_buf
, "OK"))
10648 error (_("Error on target while setting tracepoints."));
10651 if (stepping_actions
)
10653 for (ndx
= 0; stepping_actions
[ndx
]; ndx
++)
10655 QUIT
; /* Allow user to bail out with ^C. */
10656 xsnprintf (buf
, BUF_SIZE
, "QTDP:-%x:%s:%s%s%s",
10657 b
->number
, addrbuf
, /* address */
10658 ((ndx
== 0) ? "S" : ""),
10659 stepping_actions
[ndx
],
10660 (stepping_actions
[ndx
+ 1] ? "-" : ""));
10662 remote_get_noisy_reply (&target_buf
,
10664 if (strcmp (target_buf
, "OK"))
10665 error (_("Error on target while setting tracepoints."));
10669 if (remote_protocol_packets
[PACKET_TracepointSource
].support
10672 if (b
->addr_string
)
10674 strcpy (buf
, "QTDPsrc:");
10675 encode_source_string (b
->number
, loc
->address
,
10676 "at", b
->addr_string
, buf
+ strlen (buf
),
10677 2048 - strlen (buf
));
10680 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10681 if (strcmp (target_buf
, "OK"))
10682 warning (_("Target does not support source download."));
10684 if (b
->cond_string
)
10686 strcpy (buf
, "QTDPsrc:");
10687 encode_source_string (b
->number
, loc
->address
,
10688 "cond", b
->cond_string
, buf
+ strlen (buf
),
10689 2048 - strlen (buf
));
10691 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10692 if (strcmp (target_buf
, "OK"))
10693 warning (_("Target does not support source download."));
10695 remote_download_command_source (b
->number
, loc
->address
,
10696 breakpoint_commands (b
));
10699 do_cleanups (old_chain
);
10703 remote_can_download_tracepoint (struct target_ops
*self
)
10705 struct remote_state
*rs
= get_remote_state ();
10706 struct trace_status
*ts
;
10709 /* Don't try to install tracepoints until we've relocated our
10710 symbols, and fetched and merged the target's tracepoint list with
10712 if (rs
->starting_up
)
10715 ts
= current_trace_status ();
10716 status
= remote_get_trace_status (self
, ts
);
10718 if (status
== -1 || !ts
->running_known
|| !ts
->running
)
10721 /* If we are in a tracing experiment, but remote stub doesn't support
10722 installing tracepoint in trace, we have to return. */
10723 if (!remote_supports_install_in_trace ())
10731 remote_download_trace_state_variable (struct target_ops
*self
,
10732 struct trace_state_variable
*tsv
)
10734 struct remote_state
*rs
= get_remote_state ();
10737 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTDV:%x:%s:%x:",
10738 tsv
->number
, phex ((ULONGEST
) tsv
->initial_value
, 8),
10740 p
= rs
->buf
+ strlen (rs
->buf
);
10741 if ((p
- rs
->buf
) + strlen (tsv
->name
) * 2 >= get_remote_packet_size ())
10742 error (_("Trace state variable name too long for tsv definition packet"));
10743 p
+= 2 * bin2hex ((gdb_byte
*) (tsv
->name
), p
, strlen (tsv
->name
));
10746 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10747 if (*target_buf
== '\0')
10748 error (_("Target does not support this command."));
10749 if (strcmp (target_buf
, "OK") != 0)
10750 error (_("Error on target while downloading trace state variable."));
10754 remote_enable_tracepoint (struct target_ops
*self
,
10755 struct bp_location
*location
)
10757 struct remote_state
*rs
= get_remote_state ();
10760 sprintf_vma (addr_buf
, location
->address
);
10761 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTEnable:%x:%s",
10762 location
->owner
->number
, addr_buf
);
10764 remote_get_noisy_reply (&rs
->buf
, &rs
->buf_size
);
10765 if (*rs
->buf
== '\0')
10766 error (_("Target does not support enabling tracepoints while a trace run is ongoing."));
10767 if (strcmp (rs
->buf
, "OK") != 0)
10768 error (_("Error on target while enabling tracepoint."));
10772 remote_disable_tracepoint (struct target_ops
*self
,
10773 struct bp_location
*location
)
10775 struct remote_state
*rs
= get_remote_state ();
10778 sprintf_vma (addr_buf
, location
->address
);
10779 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTDisable:%x:%s",
10780 location
->owner
->number
, addr_buf
);
10782 remote_get_noisy_reply (&rs
->buf
, &rs
->buf_size
);
10783 if (*rs
->buf
== '\0')
10784 error (_("Target does not support disabling tracepoints while a trace run is ongoing."));
10785 if (strcmp (rs
->buf
, "OK") != 0)
10786 error (_("Error on target while disabling tracepoint."));
10790 remote_trace_set_readonly_regions (struct target_ops
*self
)
10794 bfd_size_type size
;
10800 return; /* No information to give. */
10802 strcpy (target_buf
, "QTro");
10803 offset
= strlen (target_buf
);
10804 for (s
= exec_bfd
->sections
; s
; s
= s
->next
)
10806 char tmp1
[40], tmp2
[40];
10809 if ((s
->flags
& SEC_LOAD
) == 0 ||
10810 /* (s->flags & SEC_CODE) == 0 || */
10811 (s
->flags
& SEC_READONLY
) == 0)
10815 vma
= bfd_get_section_vma (abfd
, s
);
10816 size
= bfd_get_section_size (s
);
10817 sprintf_vma (tmp1
, vma
);
10818 sprintf_vma (tmp2
, vma
+ size
);
10819 sec_length
= 1 + strlen (tmp1
) + 1 + strlen (tmp2
);
10820 if (offset
+ sec_length
+ 1 > target_buf_size
)
10822 if (remote_protocol_packets
[PACKET_qXfer_traceframe_info
].support
10825 Too many sections for read-only sections definition packet."));
10828 xsnprintf (target_buf
+ offset
, target_buf_size
- offset
, ":%s,%s",
10830 offset
+= sec_length
;
10834 putpkt (target_buf
);
10835 getpkt (&target_buf
, &target_buf_size
, 0);
10840 remote_trace_start (struct target_ops
*self
)
10842 putpkt ("QTStart");
10843 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10844 if (*target_buf
== '\0')
10845 error (_("Target does not support this command."));
10846 if (strcmp (target_buf
, "OK") != 0)
10847 error (_("Bogus reply from target: %s"), target_buf
);
10851 remote_get_trace_status (struct target_ops
*self
, struct trace_status
*ts
)
10853 /* Initialize it just to avoid a GCC false warning. */
10855 /* FIXME we need to get register block size some other way. */
10856 extern int trace_regblock_size
;
10857 volatile struct gdb_exception ex
;
10858 enum packet_result result
;
10860 if (remote_protocol_packets
[PACKET_qTStatus
].support
== PACKET_DISABLE
)
10863 trace_regblock_size
= get_remote_arch_state ()->sizeof_g_packet
;
10865 putpkt ("qTStatus");
10867 TRY_CATCH (ex
, RETURN_MASK_ERROR
)
10869 p
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10873 if (ex
.error
!= TARGET_CLOSE_ERROR
)
10875 exception_fprintf (gdb_stderr
, ex
, "qTStatus: ");
10878 throw_exception (ex
);
10881 result
= packet_ok (p
, &remote_protocol_packets
[PACKET_qTStatus
]);
10883 /* If the remote target doesn't do tracing, flag it. */
10884 if (result
== PACKET_UNKNOWN
)
10887 /* We're working with a live target. */
10888 ts
->filename
= NULL
;
10891 error (_("Bogus trace status reply from target: %s"), target_buf
);
10893 /* Function 'parse_trace_status' sets default value of each field of
10894 'ts' at first, so we don't have to do it here. */
10895 parse_trace_status (p
, ts
);
10897 return ts
->running
;
10901 remote_get_tracepoint_status (struct target_ops
*self
, struct breakpoint
*bp
,
10902 struct uploaded_tp
*utp
)
10904 struct remote_state
*rs
= get_remote_state ();
10906 struct bp_location
*loc
;
10907 struct tracepoint
*tp
= (struct tracepoint
*) bp
;
10908 size_t size
= get_remote_packet_size ();
10912 tp
->base
.hit_count
= 0;
10913 tp
->traceframe_usage
= 0;
10914 for (loc
= tp
->base
.loc
; loc
; loc
= loc
->next
)
10916 /* If the tracepoint was never downloaded, don't go asking for
10918 if (tp
->number_on_target
== 0)
10920 xsnprintf (rs
->buf
, size
, "qTP:%x:%s", tp
->number_on_target
,
10921 phex_nz (loc
->address
, 0));
10923 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10924 if (reply
&& *reply
)
10927 parse_tracepoint_status (reply
+ 1, bp
, utp
);
10933 utp
->hit_count
= 0;
10934 utp
->traceframe_usage
= 0;
10935 xsnprintf (rs
->buf
, size
, "qTP:%x:%s", utp
->number
,
10936 phex_nz (utp
->addr
, 0));
10938 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10939 if (reply
&& *reply
)
10942 parse_tracepoint_status (reply
+ 1, bp
, utp
);
10948 remote_trace_stop (struct target_ops
*self
)
10951 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10952 if (*target_buf
== '\0')
10953 error (_("Target does not support this command."));
10954 if (strcmp (target_buf
, "OK") != 0)
10955 error (_("Bogus reply from target: %s"), target_buf
);
10959 remote_trace_find (struct target_ops
*self
,
10960 enum trace_find_type type
, int num
,
10961 CORE_ADDR addr1
, CORE_ADDR addr2
,
10964 struct remote_state
*rs
= get_remote_state ();
10965 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
10967 int target_frameno
= -1, target_tracept
= -1;
10969 /* Lookups other than by absolute frame number depend on the current
10970 trace selected, so make sure it is correct on the remote end
10972 if (type
!= tfind_number
)
10973 set_remote_traceframe ();
10976 strcpy (p
, "QTFrame:");
10977 p
= strchr (p
, '\0');
10981 xsnprintf (p
, endbuf
- p
, "%x", num
);
10984 xsnprintf (p
, endbuf
- p
, "pc:%s", phex_nz (addr1
, 0));
10987 xsnprintf (p
, endbuf
- p
, "tdp:%x", num
);
10990 xsnprintf (p
, endbuf
- p
, "range:%s:%s", phex_nz (addr1
, 0),
10991 phex_nz (addr2
, 0));
10993 case tfind_outside
:
10994 xsnprintf (p
, endbuf
- p
, "outside:%s:%s", phex_nz (addr1
, 0),
10995 phex_nz (addr2
, 0));
10998 error (_("Unknown trace find type %d"), type
);
11002 reply
= remote_get_noisy_reply (&(rs
->buf
), &rs
->buf_size
);
11003 if (*reply
== '\0')
11004 error (_("Target does not support this command."));
11006 while (reply
&& *reply
)
11011 target_frameno
= (int) strtol (p
, &reply
, 16);
11013 error (_("Unable to parse trace frame number"));
11014 /* Don't update our remote traceframe number cache on failure
11015 to select a remote traceframe. */
11016 if (target_frameno
== -1)
11021 target_tracept
= (int) strtol (p
, &reply
, 16);
11023 error (_("Unable to parse tracepoint number"));
11025 case 'O': /* "OK"? */
11026 if (reply
[1] == 'K' && reply
[2] == '\0')
11029 error (_("Bogus reply from target: %s"), reply
);
11032 error (_("Bogus reply from target: %s"), reply
);
11035 *tpp
= target_tracept
;
11037 rs
->remote_traceframe_number
= target_frameno
;
11038 return target_frameno
;
11042 remote_get_trace_state_variable_value (struct target_ops
*self
,
11043 int tsvnum
, LONGEST
*val
)
11045 struct remote_state
*rs
= get_remote_state ();
11049 set_remote_traceframe ();
11051 xsnprintf (rs
->buf
, get_remote_packet_size (), "qTV:%x", tsvnum
);
11053 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11054 if (reply
&& *reply
)
11058 unpack_varlen_hex (reply
+ 1, &uval
);
11059 *val
= (LONGEST
) uval
;
11067 remote_save_trace_data (struct target_ops
*self
, const char *filename
)
11069 struct remote_state
*rs
= get_remote_state ();
11073 strcpy (p
, "QTSave:");
11075 if ((p
- rs
->buf
) + strlen (filename
) * 2 >= get_remote_packet_size ())
11076 error (_("Remote file name too long for trace save packet"));
11077 p
+= 2 * bin2hex ((gdb_byte
*) filename
, p
, strlen (filename
));
11080 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11081 if (*reply
== '\0')
11082 error (_("Target does not support this command."));
11083 if (strcmp (reply
, "OK") != 0)
11084 error (_("Bogus reply from target: %s"), reply
);
11088 /* This is basically a memory transfer, but needs to be its own packet
11089 because we don't know how the target actually organizes its trace
11090 memory, plus we want to be able to ask for as much as possible, but
11091 not be unhappy if we don't get as much as we ask for. */
11094 remote_get_raw_trace_data (struct target_ops
*self
,
11095 gdb_byte
*buf
, ULONGEST offset
, LONGEST len
)
11097 struct remote_state
*rs
= get_remote_state ();
11103 strcpy (p
, "qTBuffer:");
11105 p
+= hexnumstr (p
, offset
);
11107 p
+= hexnumstr (p
, len
);
11111 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11112 if (reply
&& *reply
)
11114 /* 'l' by itself means we're at the end of the buffer and
11115 there is nothing more to get. */
11119 /* Convert the reply into binary. Limit the number of bytes to
11120 convert according to our passed-in buffer size, rather than
11121 what was returned in the packet; if the target is
11122 unexpectedly generous and gives us a bigger reply than we
11123 asked for, we don't want to crash. */
11124 rslt
= hex2bin (target_buf
, buf
, len
);
11128 /* Something went wrong, flag as an error. */
11133 remote_set_disconnected_tracing (struct target_ops
*self
, int val
)
11135 struct remote_state
*rs
= get_remote_state ();
11137 if (rs
->disconnected_tracing
)
11141 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTDisconnected:%x", val
);
11143 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11144 if (*reply
== '\0')
11145 error (_("Target does not support this command."));
11146 if (strcmp (reply
, "OK") != 0)
11147 error (_("Bogus reply from target: %s"), reply
);
11150 warning (_("Target does not support disconnected tracing."));
11154 remote_core_of_thread (struct target_ops
*ops
, ptid_t ptid
)
11156 struct thread_info
*info
= find_thread_ptid (ptid
);
11158 if (info
&& info
->private)
11159 return info
->private->core
;
11164 remote_set_circular_trace_buffer (struct target_ops
*self
, int val
)
11166 struct remote_state
*rs
= get_remote_state ();
11169 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTBuffer:circular:%x", val
);
11171 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11172 if (*reply
== '\0')
11173 error (_("Target does not support this command."));
11174 if (strcmp (reply
, "OK") != 0)
11175 error (_("Bogus reply from target: %s"), reply
);
11178 static struct traceframe_info
*
11179 remote_traceframe_info (struct target_ops
*self
)
11183 text
= target_read_stralloc (¤t_target
,
11184 TARGET_OBJECT_TRACEFRAME_INFO
, NULL
);
11187 struct traceframe_info
*info
;
11188 struct cleanup
*back_to
= make_cleanup (xfree
, text
);
11190 info
= parse_traceframe_info (text
);
11191 do_cleanups (back_to
);
11198 /* Handle the qTMinFTPILen packet. Returns the minimum length of
11199 instruction on which a fast tracepoint may be placed. Returns -1
11200 if the packet is not supported, and 0 if the minimum instruction
11201 length is unknown. */
11204 remote_get_min_fast_tracepoint_insn_len (struct target_ops
*self
)
11206 struct remote_state
*rs
= get_remote_state ();
11209 /* If we're not debugging a process yet, the IPA can't be
11211 if (!target_has_execution
)
11214 /* Make sure the remote is pointing at the right process. */
11215 set_general_process ();
11217 xsnprintf (rs
->buf
, get_remote_packet_size (), "qTMinFTPILen");
11219 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11220 if (*reply
== '\0')
11224 ULONGEST min_insn_len
;
11226 unpack_varlen_hex (reply
, &min_insn_len
);
11228 return (int) min_insn_len
;
11233 remote_set_trace_buffer_size (struct target_ops
*self
, LONGEST val
)
11235 if (remote_protocol_packets
[PACKET_QTBuffer_size
].support
11238 struct remote_state
*rs
= get_remote_state ();
11239 char *buf
= rs
->buf
;
11240 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
11241 enum packet_result result
;
11243 gdb_assert (val
>= 0 || val
== -1);
11244 buf
+= xsnprintf (buf
, endbuf
- buf
, "QTBuffer:size:");
11245 /* Send -1 as literal "-1" to avoid host size dependency. */
11249 buf
+= hexnumstr (buf
, (ULONGEST
) -val
);
11252 buf
+= hexnumstr (buf
, (ULONGEST
) val
);
11255 remote_get_noisy_reply (&rs
->buf
, &rs
->buf_size
);
11256 result
= packet_ok (rs
->buf
,
11257 &remote_protocol_packets
[PACKET_QTBuffer_size
]);
11259 if (result
!= PACKET_OK
)
11260 warning (_("Bogus reply from target: %s"), rs
->buf
);
11265 remote_set_trace_notes (struct target_ops
*self
,
11266 const char *user
, const char *notes
,
11267 const char *stop_notes
)
11269 struct remote_state
*rs
= get_remote_state ();
11271 char *buf
= rs
->buf
;
11272 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
11275 buf
+= xsnprintf (buf
, endbuf
- buf
, "QTNotes:");
11278 buf
+= xsnprintf (buf
, endbuf
- buf
, "user:");
11279 nbytes
= bin2hex ((gdb_byte
*) user
, buf
, strlen (user
));
11285 buf
+= xsnprintf (buf
, endbuf
- buf
, "notes:");
11286 nbytes
= bin2hex ((gdb_byte
*) notes
, buf
, strlen (notes
));
11292 buf
+= xsnprintf (buf
, endbuf
- buf
, "tstop:");
11293 nbytes
= bin2hex ((gdb_byte
*) stop_notes
, buf
, strlen (stop_notes
));
11297 /* Ensure the buffer is terminated. */
11301 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11302 if (*reply
== '\0')
11305 if (strcmp (reply
, "OK") != 0)
11306 error (_("Bogus reply from target: %s"), reply
);
11312 remote_use_agent (struct target_ops
*self
, int use
)
11314 if (remote_protocol_packets
[PACKET_QAgent
].support
!= PACKET_DISABLE
)
11316 struct remote_state
*rs
= get_remote_state ();
11318 /* If the stub supports QAgent. */
11319 xsnprintf (rs
->buf
, get_remote_packet_size (), "QAgent:%d", use
);
11321 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11323 if (strcmp (rs
->buf
, "OK") == 0)
11334 remote_can_use_agent (struct target_ops
*self
)
11336 return (remote_protocol_packets
[PACKET_QAgent
].support
!= PACKET_DISABLE
);
11339 struct btrace_target_info
11341 /* The ptid of the traced thread. */
11345 /* Check whether the target supports branch tracing. */
11348 remote_supports_btrace (struct target_ops
*self
)
11350 if (remote_protocol_packets
[PACKET_Qbtrace_off
].support
!= PACKET_ENABLE
)
11352 if (remote_protocol_packets
[PACKET_Qbtrace_bts
].support
!= PACKET_ENABLE
)
11354 if (remote_protocol_packets
[PACKET_qXfer_btrace
].support
!= PACKET_ENABLE
)
11360 /* Enable branch tracing. */
11362 static struct btrace_target_info
*
11363 remote_enable_btrace (struct target_ops
*self
, ptid_t ptid
)
11365 struct btrace_target_info
*tinfo
= NULL
;
11366 struct packet_config
*packet
= &remote_protocol_packets
[PACKET_Qbtrace_bts
];
11367 struct remote_state
*rs
= get_remote_state ();
11368 char *buf
= rs
->buf
;
11369 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
11371 if (packet
->support
!= PACKET_ENABLE
)
11372 error (_("Target does not support branch tracing."));
11374 set_general_thread (ptid
);
11376 buf
+= xsnprintf (buf
, endbuf
- buf
, "%s", packet
->name
);
11378 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11380 if (packet_ok (rs
->buf
, packet
) == PACKET_ERROR
)
11382 if (rs
->buf
[0] == 'E' && rs
->buf
[1] == '.')
11383 error (_("Could not enable branch tracing for %s: %s"),
11384 target_pid_to_str (ptid
), rs
->buf
+ 2);
11386 error (_("Could not enable branch tracing for %s."),
11387 target_pid_to_str (ptid
));
11390 tinfo
= xzalloc (sizeof (*tinfo
));
11391 tinfo
->ptid
= ptid
;
11396 /* Disable branch tracing. */
11399 remote_disable_btrace (struct target_ops
*self
,
11400 struct btrace_target_info
*tinfo
)
11402 struct packet_config
*packet
= &remote_protocol_packets
[PACKET_Qbtrace_off
];
11403 struct remote_state
*rs
= get_remote_state ();
11404 char *buf
= rs
->buf
;
11405 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
11407 if (packet
->support
!= PACKET_ENABLE
)
11408 error (_("Target does not support branch tracing."));
11410 set_general_thread (tinfo
->ptid
);
11412 buf
+= xsnprintf (buf
, endbuf
- buf
, "%s", packet
->name
);
11414 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11416 if (packet_ok (rs
->buf
, packet
) == PACKET_ERROR
)
11418 if (rs
->buf
[0] == 'E' && rs
->buf
[1] == '.')
11419 error (_("Could not disable branch tracing for %s: %s"),
11420 target_pid_to_str (tinfo
->ptid
), rs
->buf
+ 2);
11422 error (_("Could not disable branch tracing for %s."),
11423 target_pid_to_str (tinfo
->ptid
));
11429 /* Teardown branch tracing. */
11432 remote_teardown_btrace (struct target_ops
*self
,
11433 struct btrace_target_info
*tinfo
)
11435 /* We must not talk to the target during teardown. */
11439 /* Read the branch trace. */
11441 static enum btrace_error
11442 remote_read_btrace (struct target_ops
*self
,
11443 VEC (btrace_block_s
) **btrace
,
11444 struct btrace_target_info
*tinfo
,
11445 enum btrace_read_type type
)
11447 struct packet_config
*packet
= &remote_protocol_packets
[PACKET_qXfer_btrace
];
11448 struct remote_state
*rs
= get_remote_state ();
11449 struct cleanup
*cleanup
;
11453 if (packet
->support
!= PACKET_ENABLE
)
11454 error (_("Target does not support branch tracing."));
11456 #if !defined(HAVE_LIBEXPAT)
11457 error (_("Cannot process branch tracing result. XML parsing not supported."));
11462 case BTRACE_READ_ALL
:
11465 case BTRACE_READ_NEW
:
11468 case BTRACE_READ_DELTA
:
11472 internal_error (__FILE__
, __LINE__
,
11473 _("Bad branch tracing read type: %u."),
11474 (unsigned int) type
);
11477 xml
= target_read_stralloc (¤t_target
,
11478 TARGET_OBJECT_BTRACE
, annex
);
11480 return BTRACE_ERR_UNKNOWN
;
11482 cleanup
= make_cleanup (xfree
, xml
);
11483 *btrace
= parse_xml_btrace (xml
);
11484 do_cleanups (cleanup
);
11486 return BTRACE_ERR_NONE
;
11490 remote_augmented_libraries_svr4_read (struct target_ops
*self
)
11492 struct remote_state
*rs
= get_remote_state ();
11494 return rs
->augmented_libraries_svr4_read
;
11497 /* Implementation of to_load. */
11500 remote_load (struct target_ops
*self
, char *name
, int from_tty
)
11502 generic_load (name
, from_tty
);
11506 init_remote_ops (void)
11508 remote_ops
.to_shortname
= "remote";
11509 remote_ops
.to_longname
= "Remote serial target in gdb-specific protocol";
11510 remote_ops
.to_doc
=
11511 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
11512 Specify the serial device it is connected to\n\
11513 (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).";
11514 remote_ops
.to_open
= remote_open
;
11515 remote_ops
.to_close
= remote_close
;
11516 remote_ops
.to_detach
= remote_detach
;
11517 remote_ops
.to_disconnect
= remote_disconnect
;
11518 remote_ops
.to_resume
= remote_resume
;
11519 remote_ops
.to_wait
= remote_wait
;
11520 remote_ops
.to_fetch_registers
= remote_fetch_registers
;
11521 remote_ops
.to_store_registers
= remote_store_registers
;
11522 remote_ops
.to_prepare_to_store
= remote_prepare_to_store
;
11523 remote_ops
.to_files_info
= remote_files_info
;
11524 remote_ops
.to_insert_breakpoint
= remote_insert_breakpoint
;
11525 remote_ops
.to_remove_breakpoint
= remote_remove_breakpoint
;
11526 remote_ops
.to_stopped_by_watchpoint
= remote_stopped_by_watchpoint
;
11527 remote_ops
.to_stopped_data_address
= remote_stopped_data_address
;
11528 remote_ops
.to_watchpoint_addr_within_range
=
11529 remote_watchpoint_addr_within_range
;
11530 remote_ops
.to_can_use_hw_breakpoint
= remote_check_watch_resources
;
11531 remote_ops
.to_insert_hw_breakpoint
= remote_insert_hw_breakpoint
;
11532 remote_ops
.to_remove_hw_breakpoint
= remote_remove_hw_breakpoint
;
11533 remote_ops
.to_region_ok_for_hw_watchpoint
11534 = remote_region_ok_for_hw_watchpoint
;
11535 remote_ops
.to_insert_watchpoint
= remote_insert_watchpoint
;
11536 remote_ops
.to_remove_watchpoint
= remote_remove_watchpoint
;
11537 remote_ops
.to_kill
= remote_kill
;
11538 remote_ops
.to_load
= remote_load
;
11539 remote_ops
.to_mourn_inferior
= remote_mourn
;
11540 remote_ops
.to_pass_signals
= remote_pass_signals
;
11541 remote_ops
.to_program_signals
= remote_program_signals
;
11542 remote_ops
.to_thread_alive
= remote_thread_alive
;
11543 remote_ops
.to_find_new_threads
= remote_threads_info
;
11544 remote_ops
.to_pid_to_str
= remote_pid_to_str
;
11545 remote_ops
.to_extra_thread_info
= remote_threads_extra_info
;
11546 remote_ops
.to_get_ada_task_ptid
= remote_get_ada_task_ptid
;
11547 remote_ops
.to_stop
= remote_stop
;
11548 remote_ops
.to_xfer_partial
= remote_xfer_partial
;
11549 remote_ops
.to_rcmd
= remote_rcmd
;
11550 remote_ops
.to_log_command
= serial_log_command
;
11551 remote_ops
.to_get_thread_local_address
= remote_get_thread_local_address
;
11552 remote_ops
.to_stratum
= process_stratum
;
11553 remote_ops
.to_has_all_memory
= default_child_has_all_memory
;
11554 remote_ops
.to_has_memory
= default_child_has_memory
;
11555 remote_ops
.to_has_stack
= default_child_has_stack
;
11556 remote_ops
.to_has_registers
= default_child_has_registers
;
11557 remote_ops
.to_has_execution
= default_child_has_execution
;
11558 remote_ops
.to_has_thread_control
= tc_schedlock
; /* can lock scheduler */
11559 remote_ops
.to_can_execute_reverse
= remote_can_execute_reverse
;
11560 remote_ops
.to_magic
= OPS_MAGIC
;
11561 remote_ops
.to_memory_map
= remote_memory_map
;
11562 remote_ops
.to_flash_erase
= remote_flash_erase
;
11563 remote_ops
.to_flash_done
= remote_flash_done
;
11564 remote_ops
.to_read_description
= remote_read_description
;
11565 remote_ops
.to_search_memory
= remote_search_memory
;
11566 remote_ops
.to_can_async_p
= remote_can_async_p
;
11567 remote_ops
.to_is_async_p
= remote_is_async_p
;
11568 remote_ops
.to_async
= remote_async
;
11569 remote_ops
.to_terminal_inferior
= remote_terminal_inferior
;
11570 remote_ops
.to_terminal_ours
= remote_terminal_ours
;
11571 remote_ops
.to_supports_non_stop
= remote_supports_non_stop
;
11572 remote_ops
.to_supports_multi_process
= remote_supports_multi_process
;
11573 remote_ops
.to_supports_disable_randomization
11574 = remote_supports_disable_randomization
;
11575 remote_ops
.to_fileio_open
= remote_hostio_open
;
11576 remote_ops
.to_fileio_pwrite
= remote_hostio_pwrite
;
11577 remote_ops
.to_fileio_pread
= remote_hostio_pread
;
11578 remote_ops
.to_fileio_close
= remote_hostio_close
;
11579 remote_ops
.to_fileio_unlink
= remote_hostio_unlink
;
11580 remote_ops
.to_fileio_readlink
= remote_hostio_readlink
;
11581 remote_ops
.to_supports_enable_disable_tracepoint
= remote_supports_enable_disable_tracepoint
;
11582 remote_ops
.to_supports_string_tracing
= remote_supports_string_tracing
;
11583 remote_ops
.to_supports_evaluation_of_breakpoint_conditions
= remote_supports_cond_breakpoints
;
11584 remote_ops
.to_can_run_breakpoint_commands
= remote_can_run_breakpoint_commands
;
11585 remote_ops
.to_trace_init
= remote_trace_init
;
11586 remote_ops
.to_download_tracepoint
= remote_download_tracepoint
;
11587 remote_ops
.to_can_download_tracepoint
= remote_can_download_tracepoint
;
11588 remote_ops
.to_download_trace_state_variable
11589 = remote_download_trace_state_variable
;
11590 remote_ops
.to_enable_tracepoint
= remote_enable_tracepoint
;
11591 remote_ops
.to_disable_tracepoint
= remote_disable_tracepoint
;
11592 remote_ops
.to_trace_set_readonly_regions
= remote_trace_set_readonly_regions
;
11593 remote_ops
.to_trace_start
= remote_trace_start
;
11594 remote_ops
.to_get_trace_status
= remote_get_trace_status
;
11595 remote_ops
.to_get_tracepoint_status
= remote_get_tracepoint_status
;
11596 remote_ops
.to_trace_stop
= remote_trace_stop
;
11597 remote_ops
.to_trace_find
= remote_trace_find
;
11598 remote_ops
.to_get_trace_state_variable_value
11599 = remote_get_trace_state_variable_value
;
11600 remote_ops
.to_save_trace_data
= remote_save_trace_data
;
11601 remote_ops
.to_upload_tracepoints
= remote_upload_tracepoints
;
11602 remote_ops
.to_upload_trace_state_variables
11603 = remote_upload_trace_state_variables
;
11604 remote_ops
.to_get_raw_trace_data
= remote_get_raw_trace_data
;
11605 remote_ops
.to_get_min_fast_tracepoint_insn_len
= remote_get_min_fast_tracepoint_insn_len
;
11606 remote_ops
.to_set_disconnected_tracing
= remote_set_disconnected_tracing
;
11607 remote_ops
.to_set_circular_trace_buffer
= remote_set_circular_trace_buffer
;
11608 remote_ops
.to_set_trace_buffer_size
= remote_set_trace_buffer_size
;
11609 remote_ops
.to_set_trace_notes
= remote_set_trace_notes
;
11610 remote_ops
.to_core_of_thread
= remote_core_of_thread
;
11611 remote_ops
.to_verify_memory
= remote_verify_memory
;
11612 remote_ops
.to_get_tib_address
= remote_get_tib_address
;
11613 remote_ops
.to_set_permissions
= remote_set_permissions
;
11614 remote_ops
.to_static_tracepoint_marker_at
11615 = remote_static_tracepoint_marker_at
;
11616 remote_ops
.to_static_tracepoint_markers_by_strid
11617 = remote_static_tracepoint_markers_by_strid
;
11618 remote_ops
.to_traceframe_info
= remote_traceframe_info
;
11619 remote_ops
.to_use_agent
= remote_use_agent
;
11620 remote_ops
.to_can_use_agent
= remote_can_use_agent
;
11621 remote_ops
.to_supports_btrace
= remote_supports_btrace
;
11622 remote_ops
.to_enable_btrace
= remote_enable_btrace
;
11623 remote_ops
.to_disable_btrace
= remote_disable_btrace
;
11624 remote_ops
.to_teardown_btrace
= remote_teardown_btrace
;
11625 remote_ops
.to_read_btrace
= remote_read_btrace
;
11626 remote_ops
.to_augmented_libraries_svr4_read
=
11627 remote_augmented_libraries_svr4_read
;
11630 /* Set up the extended remote vector by making a copy of the standard
11631 remote vector and adding to it. */
11634 init_extended_remote_ops (void)
11636 extended_remote_ops
= remote_ops
;
11638 extended_remote_ops
.to_shortname
= "extended-remote";
11639 extended_remote_ops
.to_longname
=
11640 "Extended remote serial target in gdb-specific protocol";
11641 extended_remote_ops
.to_doc
=
11642 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
11643 Specify the serial device it is connected to (e.g. /dev/ttya).";
11644 extended_remote_ops
.to_open
= extended_remote_open
;
11645 extended_remote_ops
.to_create_inferior
= extended_remote_create_inferior
;
11646 extended_remote_ops
.to_mourn_inferior
= extended_remote_mourn
;
11647 extended_remote_ops
.to_detach
= extended_remote_detach
;
11648 extended_remote_ops
.to_attach
= extended_remote_attach
;
11649 extended_remote_ops
.to_kill
= extended_remote_kill
;
11650 extended_remote_ops
.to_supports_disable_randomization
11651 = extended_remote_supports_disable_randomization
;
11655 remote_can_async_p (struct target_ops
*ops
)
11657 struct remote_state
*rs
= get_remote_state ();
11659 if (!target_async_permitted
)
11660 /* We only enable async when the user specifically asks for it. */
11663 /* We're async whenever the serial device is. */
11664 return serial_can_async_p (rs
->remote_desc
);
11668 remote_is_async_p (struct target_ops
*ops
)
11670 struct remote_state
*rs
= get_remote_state ();
11672 if (!target_async_permitted
)
11673 /* We only enable async when the user specifically asks for it. */
11676 /* We're async whenever the serial device is. */
11677 return serial_is_async_p (rs
->remote_desc
);
11680 /* Pass the SERIAL event on and up to the client. One day this code
11681 will be able to delay notifying the client of an event until the
11682 point where an entire packet has been received. */
11684 static serial_event_ftype remote_async_serial_handler
;
11687 remote_async_serial_handler (struct serial
*scb
, void *context
)
11689 struct remote_state
*rs
= context
;
11691 /* Don't propogate error information up to the client. Instead let
11692 the client find out about the error by querying the target. */
11693 rs
->async_client_callback (INF_REG_EVENT
, rs
->async_client_context
);
11697 remote_async_inferior_event_handler (gdb_client_data data
)
11699 inferior_event_handler (INF_REG_EVENT
, NULL
);
11703 remote_async (struct target_ops
*ops
,
11704 void (*callback
) (enum inferior_event_type event_type
,
11708 struct remote_state
*rs
= get_remote_state ();
11710 if (callback
!= NULL
)
11712 serial_async (rs
->remote_desc
, remote_async_serial_handler
, rs
);
11713 rs
->async_client_callback
= callback
;
11714 rs
->async_client_context
= context
;
11717 serial_async (rs
->remote_desc
, NULL
, NULL
);
11721 set_remote_cmd (char *args
, int from_tty
)
11723 help_list (remote_set_cmdlist
, "set remote ", -1, gdb_stdout
);
11727 show_remote_cmd (char *args
, int from_tty
)
11729 /* We can't just use cmd_show_list here, because we want to skip
11730 the redundant "show remote Z-packet" and the legacy aliases. */
11731 struct cleanup
*showlist_chain
;
11732 struct cmd_list_element
*list
= remote_show_cmdlist
;
11733 struct ui_out
*uiout
= current_uiout
;
11735 showlist_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "showlist");
11736 for (; list
!= NULL
; list
= list
->next
)
11737 if (strcmp (list
->name
, "Z-packet") == 0)
11739 else if (list
->type
== not_set_cmd
)
11740 /* Alias commands are exactly like the original, except they
11741 don't have the normal type. */
11745 struct cleanup
*option_chain
11746 = make_cleanup_ui_out_tuple_begin_end (uiout
, "option");
11748 ui_out_field_string (uiout
, "name", list
->name
);
11749 ui_out_text (uiout
, ": ");
11750 if (list
->type
== show_cmd
)
11751 do_show_command ((char *) NULL
, from_tty
, list
);
11753 cmd_func (list
, NULL
, from_tty
);
11754 /* Close the tuple. */
11755 do_cleanups (option_chain
);
11758 /* Close the tuple. */
11759 do_cleanups (showlist_chain
);
11763 /* Function to be called whenever a new objfile (shlib) is detected. */
11765 remote_new_objfile (struct objfile
*objfile
)
11767 struct remote_state
*rs
= get_remote_state ();
11769 if (rs
->remote_desc
!= 0) /* Have a remote connection. */
11770 remote_check_symbols ();
11773 /* Pull all the tracepoints defined on the target and create local
11774 data structures representing them. We don't want to create real
11775 tracepoints yet, we don't want to mess up the user's existing
11779 remote_upload_tracepoints (struct target_ops
*self
, struct uploaded_tp
**utpp
)
11781 struct remote_state
*rs
= get_remote_state ();
11784 /* Ask for a first packet of tracepoint definition. */
11786 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11788 while (*p
&& *p
!= 'l')
11790 parse_tracepoint_definition (p
, utpp
);
11791 /* Ask for another packet of tracepoint definition. */
11793 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11800 remote_upload_trace_state_variables (struct target_ops
*self
,
11801 struct uploaded_tsv
**utsvp
)
11803 struct remote_state
*rs
= get_remote_state ();
11806 /* Ask for a first packet of variable definition. */
11808 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11810 while (*p
&& *p
!= 'l')
11812 parse_tsv_definition (p
, utsvp
);
11813 /* Ask for another packet of variable definition. */
11815 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11821 /* The "set/show range-stepping" show hook. */
11824 show_range_stepping (struct ui_file
*file
, int from_tty
,
11825 struct cmd_list_element
*c
,
11828 fprintf_filtered (file
,
11829 _("Debugger's willingness to use range stepping "
11830 "is %s.\n"), value
);
11833 /* The "set/show range-stepping" set hook. */
11836 set_range_stepping (char *ignore_args
, int from_tty
,
11837 struct cmd_list_element
*c
)
11839 struct remote_state
*rs
= get_remote_state ();
11841 /* Whene enabling, check whether range stepping is actually
11842 supported by the target, and warn if not. */
11843 if (use_range_stepping
)
11845 if (rs
->remote_desc
!= NULL
)
11847 if (remote_protocol_packets
[PACKET_vCont
].support
== PACKET_SUPPORT_UNKNOWN
)
11848 remote_vcont_probe (rs
);
11850 if (remote_protocol_packets
[PACKET_vCont
].support
== PACKET_ENABLE
11851 && rs
->supports_vCont
.r
)
11855 warning (_("Range stepping is not supported by the current target"));
11860 _initialize_remote (void)
11862 struct remote_state
*rs
;
11863 struct cmd_list_element
*cmd
;
11864 const char *cmd_name
;
11866 /* architecture specific data */
11867 remote_gdbarch_data_handle
=
11868 gdbarch_data_register_post_init (init_remote_state
);
11869 remote_g_packet_data_handle
=
11870 gdbarch_data_register_pre_init (remote_g_packet_data_init
);
11872 /* Initialize the per-target state. At the moment there is only one
11873 of these, not one per target. Only one target is active at a
11875 remote_state
= new_remote_state ();
11877 init_remote_ops ();
11878 add_target (&remote_ops
);
11880 init_extended_remote_ops ();
11881 add_target (&extended_remote_ops
);
11883 /* Hook into new objfile notification. */
11884 observer_attach_new_objfile (remote_new_objfile
);
11885 /* We're no longer interested in notification events of an inferior
11887 observer_attach_inferior_exit (discard_pending_stop_replies
);
11889 /* Set up signal handlers. */
11890 async_sigint_remote_token
=
11891 create_async_signal_handler (async_remote_interrupt
, NULL
);
11892 async_sigint_remote_twice_token
=
11893 create_async_signal_handler (async_remote_interrupt_twice
, NULL
);
11896 init_remote_threadtests ();
11899 stop_reply_queue
= QUEUE_alloc (stop_reply_p
, stop_reply_xfree
);
11900 /* set/show remote ... */
11902 add_prefix_cmd ("remote", class_maintenance
, set_remote_cmd
, _("\
11903 Remote protocol specific variables\n\
11904 Configure various remote-protocol specific variables such as\n\
11905 the packets being used"),
11906 &remote_set_cmdlist
, "set remote ",
11907 0 /* allow-unknown */, &setlist
);
11908 add_prefix_cmd ("remote", class_maintenance
, show_remote_cmd
, _("\
11909 Remote protocol specific variables\n\
11910 Configure various remote-protocol specific variables such as\n\
11911 the packets being used"),
11912 &remote_show_cmdlist
, "show remote ",
11913 0 /* allow-unknown */, &showlist
);
11915 add_cmd ("compare-sections", class_obscure
, compare_sections_command
, _("\
11916 Compare section data on target to the exec file.\n\
11917 Argument is a single section name (default: all loaded sections)."),
11920 add_cmd ("packet", class_maintenance
, packet_command
, _("\
11921 Send an arbitrary packet to a remote target.\n\
11922 maintenance packet TEXT\n\
11923 If GDB is talking to an inferior via the GDB serial protocol, then\n\
11924 this command sends the string TEXT to the inferior, and displays the\n\
11925 response packet. GDB supplies the initial `$' character, and the\n\
11926 terminating `#' character and checksum."),
11929 add_setshow_boolean_cmd ("remotebreak", no_class
, &remote_break
, _("\
11930 Set whether to send break if interrupted."), _("\
11931 Show whether to send break if interrupted."), _("\
11932 If set, a break, instead of a cntrl-c, is sent to the remote target."),
11933 set_remotebreak
, show_remotebreak
,
11934 &setlist
, &showlist
);
11935 cmd_name
= "remotebreak";
11936 cmd
= lookup_cmd (&cmd_name
, setlist
, "", -1, 1);
11937 deprecate_cmd (cmd
, "set remote interrupt-sequence");
11938 cmd_name
= "remotebreak"; /* needed because lookup_cmd updates the pointer */
11939 cmd
= lookup_cmd (&cmd_name
, showlist
, "", -1, 1);
11940 deprecate_cmd (cmd
, "show remote interrupt-sequence");
11942 add_setshow_enum_cmd ("interrupt-sequence", class_support
,
11943 interrupt_sequence_modes
, &interrupt_sequence_mode
,
11945 Set interrupt sequence to remote target."), _("\
11946 Show interrupt sequence to remote target."), _("\
11947 Valid value is \"Ctrl-C\", \"BREAK\" or \"BREAK-g\". The default is \"Ctrl-C\"."),
11948 NULL
, show_interrupt_sequence
,
11949 &remote_set_cmdlist
,
11950 &remote_show_cmdlist
);
11952 add_setshow_boolean_cmd ("interrupt-on-connect", class_support
,
11953 &interrupt_on_connect
, _("\
11954 Set whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \
11955 Show whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \
11956 If set, interrupt sequence is sent to remote target."),
11958 &remote_set_cmdlist
, &remote_show_cmdlist
);
11960 /* Install commands for configuring memory read/write packets. */
11962 add_cmd ("remotewritesize", no_class
, set_memory_write_packet_size
, _("\
11963 Set the maximum number of bytes per memory write packet (deprecated)."),
11965 add_cmd ("remotewritesize", no_class
, show_memory_write_packet_size
, _("\
11966 Show the maximum number of bytes per memory write packet (deprecated)."),
11968 add_cmd ("memory-write-packet-size", no_class
,
11969 set_memory_write_packet_size
, _("\
11970 Set the maximum number of bytes per memory-write packet.\n\
11971 Specify the number of bytes in a packet or 0 (zero) for the\n\
11972 default packet size. The actual limit is further reduced\n\
11973 dependent on the target. Specify ``fixed'' to disable the\n\
11974 further restriction and ``limit'' to enable that restriction."),
11975 &remote_set_cmdlist
);
11976 add_cmd ("memory-read-packet-size", no_class
,
11977 set_memory_read_packet_size
, _("\
11978 Set the maximum number of bytes per memory-read packet.\n\
11979 Specify the number of bytes in a packet or 0 (zero) for the\n\
11980 default packet size. The actual limit is further reduced\n\
11981 dependent on the target. Specify ``fixed'' to disable the\n\
11982 further restriction and ``limit'' to enable that restriction."),
11983 &remote_set_cmdlist
);
11984 add_cmd ("memory-write-packet-size", no_class
,
11985 show_memory_write_packet_size
,
11986 _("Show the maximum number of bytes per memory-write packet."),
11987 &remote_show_cmdlist
);
11988 add_cmd ("memory-read-packet-size", no_class
,
11989 show_memory_read_packet_size
,
11990 _("Show the maximum number of bytes per memory-read packet."),
11991 &remote_show_cmdlist
);
11993 add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class
,
11994 &remote_hw_watchpoint_limit
, _("\
11995 Set the maximum number of target hardware watchpoints."), _("\
11996 Show the maximum number of target hardware watchpoints."), _("\
11997 Specify a negative limit for unlimited."),
11998 NULL
, NULL
, /* FIXME: i18n: The maximum
11999 number of target hardware
12000 watchpoints is %s. */
12001 &remote_set_cmdlist
, &remote_show_cmdlist
);
12002 add_setshow_zinteger_cmd ("hardware-watchpoint-length-limit", no_class
,
12003 &remote_hw_watchpoint_length_limit
, _("\
12004 Set the maximum length (in bytes) of a target hardware watchpoint."), _("\
12005 Show the maximum length (in bytes) of a target hardware watchpoint."), _("\
12006 Specify a negative limit for unlimited."),
12007 NULL
, NULL
, /* FIXME: i18n: The maximum
12008 length (in bytes) of a target
12009 hardware watchpoint is %s. */
12010 &remote_set_cmdlist
, &remote_show_cmdlist
);
12011 add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class
,
12012 &remote_hw_breakpoint_limit
, _("\
12013 Set the maximum number of target hardware breakpoints."), _("\
12014 Show the maximum number of target hardware breakpoints."), _("\
12015 Specify a negative limit for unlimited."),
12016 NULL
, NULL
, /* FIXME: i18n: The maximum
12017 number of target hardware
12018 breakpoints is %s. */
12019 &remote_set_cmdlist
, &remote_show_cmdlist
);
12021 add_setshow_zuinteger_cmd ("remoteaddresssize", class_obscure
,
12022 &remote_address_size
, _("\
12023 Set the maximum size of the address (in bits) in a memory packet."), _("\
12024 Show the maximum size of the address (in bits) in a memory packet."), NULL
,
12026 NULL
, /* FIXME: i18n: */
12027 &setlist
, &showlist
);
12029 add_packet_config_cmd (&remote_protocol_packets
[PACKET_X
],
12030 "X", "binary-download", 1);
12032 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vCont
],
12033 "vCont", "verbose-resume", 0);
12035 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QPassSignals
],
12036 "QPassSignals", "pass-signals", 0);
12038 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QProgramSignals
],
12039 "QProgramSignals", "program-signals", 0);
12041 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSymbol
],
12042 "qSymbol", "symbol-lookup", 0);
12044 add_packet_config_cmd (&remote_protocol_packets
[PACKET_P
],
12045 "P", "set-register", 1);
12047 add_packet_config_cmd (&remote_protocol_packets
[PACKET_p
],
12048 "p", "fetch-register", 1);
12050 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z0
],
12051 "Z0", "software-breakpoint", 0);
12053 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z1
],
12054 "Z1", "hardware-breakpoint", 0);
12056 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z2
],
12057 "Z2", "write-watchpoint", 0);
12059 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z3
],
12060 "Z3", "read-watchpoint", 0);
12062 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z4
],
12063 "Z4", "access-watchpoint", 0);
12065 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_auxv
],
12066 "qXfer:auxv:read", "read-aux-vector", 0);
12068 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_features
],
12069 "qXfer:features:read", "target-features", 0);
12071 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_libraries
],
12072 "qXfer:libraries:read", "library-info", 0);
12074 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_libraries_svr4
],
12075 "qXfer:libraries-svr4:read", "library-info-svr4", 0);
12077 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_memory_map
],
12078 "qXfer:memory-map:read", "memory-map", 0);
12080 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_spu_read
],
12081 "qXfer:spu:read", "read-spu-object", 0);
12083 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_spu_write
],
12084 "qXfer:spu:write", "write-spu-object", 0);
12086 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_osdata
],
12087 "qXfer:osdata:read", "osdata", 0);
12089 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_threads
],
12090 "qXfer:threads:read", "threads", 0);
12092 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_siginfo_read
],
12093 "qXfer:siginfo:read", "read-siginfo-object", 0);
12095 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_siginfo_write
],
12096 "qXfer:siginfo:write", "write-siginfo-object", 0);
12098 add_packet_config_cmd
12099 (&remote_protocol_packets
[PACKET_qXfer_traceframe_info
],
12100 "qXfer:traceframe-info:read", "traceframe-info", 0);
12102 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_uib
],
12103 "qXfer:uib:read", "unwind-info-block", 0);
12105 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qGetTLSAddr
],
12106 "qGetTLSAddr", "get-thread-local-storage-address",
12109 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qGetTIBAddr
],
12110 "qGetTIBAddr", "get-thread-information-block-address",
12113 add_packet_config_cmd (&remote_protocol_packets
[PACKET_bc
],
12114 "bc", "reverse-continue", 0);
12116 add_packet_config_cmd (&remote_protocol_packets
[PACKET_bs
],
12117 "bs", "reverse-step", 0);
12119 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSupported
],
12120 "qSupported", "supported-packets", 0);
12122 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSearch_memory
],
12123 "qSearch:memory", "search-memory", 0);
12125 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qTStatus
],
12126 "qTStatus", "trace-status", 0);
12128 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_open
],
12129 "vFile:open", "hostio-open", 0);
12131 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_pread
],
12132 "vFile:pread", "hostio-pread", 0);
12134 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_pwrite
],
12135 "vFile:pwrite", "hostio-pwrite", 0);
12137 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_close
],
12138 "vFile:close", "hostio-close", 0);
12140 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_unlink
],
12141 "vFile:unlink", "hostio-unlink", 0);
12143 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_readlink
],
12144 "vFile:readlink", "hostio-readlink", 0);
12146 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vAttach
],
12147 "vAttach", "attach", 0);
12149 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vRun
],
12152 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QStartNoAckMode
],
12153 "QStartNoAckMode", "noack", 0);
12155 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vKill
],
12156 "vKill", "kill", 0);
12158 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qAttached
],
12159 "qAttached", "query-attached", 0);
12161 add_packet_config_cmd (&remote_protocol_packets
[PACKET_ConditionalTracepoints
],
12162 "ConditionalTracepoints",
12163 "conditional-tracepoints", 0);
12165 add_packet_config_cmd (&remote_protocol_packets
[PACKET_ConditionalBreakpoints
],
12166 "ConditionalBreakpoints",
12167 "conditional-breakpoints", 0);
12169 add_packet_config_cmd (&remote_protocol_packets
[PACKET_BreakpointCommands
],
12170 "BreakpointCommands",
12171 "breakpoint-commands", 0);
12173 add_packet_config_cmd (&remote_protocol_packets
[PACKET_FastTracepoints
],
12174 "FastTracepoints", "fast-tracepoints", 0);
12176 add_packet_config_cmd (&remote_protocol_packets
[PACKET_TracepointSource
],
12177 "TracepointSource", "TracepointSource", 0);
12179 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QAllow
],
12180 "QAllow", "allow", 0);
12182 add_packet_config_cmd (&remote_protocol_packets
[PACKET_StaticTracepoints
],
12183 "StaticTracepoints", "static-tracepoints", 0);
12185 add_packet_config_cmd (&remote_protocol_packets
[PACKET_InstallInTrace
],
12186 "InstallInTrace", "install-in-trace", 0);
12188 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_statictrace_read
],
12189 "qXfer:statictrace:read", "read-sdata-object", 0);
12191 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_fdpic
],
12192 "qXfer:fdpic:read", "read-fdpic-loadmap", 0);
12194 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QDisableRandomization
],
12195 "QDisableRandomization", "disable-randomization", 0);
12197 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QAgent
],
12198 "QAgent", "agent", 0);
12200 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QTBuffer_size
],
12201 "QTBuffer:size", "trace-buffer-size", 0);
12203 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Qbtrace_off
],
12204 "Qbtrace:off", "disable-btrace", 0);
12206 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Qbtrace_bts
],
12207 "Qbtrace:bts", "enable-btrace", 0);
12209 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_btrace
],
12210 "qXfer:btrace", "read-btrace", 0);
12212 /* Keep the old ``set remote Z-packet ...'' working. Each individual
12213 Z sub-packet has its own set and show commands, but users may
12214 have sets to this variable in their .gdbinit files (or in their
12216 add_setshow_auto_boolean_cmd ("Z-packet", class_obscure
,
12217 &remote_Z_packet_detect
, _("\
12218 Set use of remote protocol `Z' packets"), _("\
12219 Show use of remote protocol `Z' packets "), _("\
12220 When set, GDB will attempt to use the remote breakpoint and watchpoint\n\
12222 set_remote_protocol_Z_packet_cmd
,
12223 show_remote_protocol_Z_packet_cmd
,
12224 /* FIXME: i18n: Use of remote protocol
12225 `Z' packets is %s. */
12226 &remote_set_cmdlist
, &remote_show_cmdlist
);
12228 add_prefix_cmd ("remote", class_files
, remote_command
, _("\
12229 Manipulate files on the remote system\n\
12230 Transfer files to and from the remote target system."),
12231 &remote_cmdlist
, "remote ",
12232 0 /* allow-unknown */, &cmdlist
);
12234 add_cmd ("put", class_files
, remote_put_command
,
12235 _("Copy a local file to the remote system."),
12238 add_cmd ("get", class_files
, remote_get_command
,
12239 _("Copy a remote file to the local system."),
12242 add_cmd ("delete", class_files
, remote_delete_command
,
12243 _("Delete a remote file."),
12246 remote_exec_file
= xstrdup ("");
12247 add_setshow_string_noescape_cmd ("exec-file", class_files
,
12248 &remote_exec_file
, _("\
12249 Set the remote pathname for \"run\""), _("\
12250 Show the remote pathname for \"run\""), NULL
, NULL
, NULL
,
12251 &remote_set_cmdlist
, &remote_show_cmdlist
);
12253 add_setshow_boolean_cmd ("range-stepping", class_run
,
12254 &use_range_stepping
, _("\
12255 Enable or disable range stepping."), _("\
12256 Show whether target-assisted range stepping is enabled."), _("\
12257 If on, and the target supports it, when stepping a source line, GDB\n\
12258 tells the target to step the corresponding range of addresses itself instead\n\
12259 of issuing multiple single-steps. This speeds up source level\n\
12260 stepping. If off, GDB always issues single-steps, even if range\n\
12261 stepping is supported by the target. The default is on."),
12262 set_range_stepping
,
12263 show_range_stepping
,
12267 /* Eventually initialize fileio. See fileio.c */
12268 initialize_remote_fileio (remote_set_cmdlist
, remote_show_cmdlist
);
12270 /* Take advantage of the fact that the TID field is not used, to tag
12271 special ptids with it set to != 0. */
12272 magic_null_ptid
= ptid_build (42000, -1, 1);
12273 not_sent_ptid
= ptid_build (42000, -2, 1);
12274 any_thread_ptid
= ptid_build (42000, 0, 1);
12276 target_buf_size
= 2048;
12277 target_buf
= xmalloc (target_buf_size
);