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 (void);
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_tid (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_tid (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
, 0, tid
);
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
, 0, tid
);
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
, 0, threadref_to_int (ref
));
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_tid (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_tid (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 (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 (const char *strid
)
2923 struct remote_state
*rs
= get_remote_state ();
2924 VEC(static_tracepoint_marker_p
) *markers
= NULL
;
2925 struct static_tracepoint_marker
*marker
= NULL
;
2926 struct cleanup
*old_chain
;
2929 /* Ask for a first packet of static tracepoint marker
2932 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2935 error (_("Remote failure reply: %s"), p
);
2937 old_chain
= make_cleanup (free_current_marker
, &marker
);
2942 marker
= XCNEW (struct static_tracepoint_marker
);
2946 parse_static_tracepoint_marker_definition (p
, &p
, marker
);
2948 if (strid
== NULL
|| strcmp (strid
, marker
->str_id
) == 0)
2950 VEC_safe_push (static_tracepoint_marker_p
,
2956 release_static_tracepoint_marker (marker
);
2957 memset (marker
, 0, sizeof (*marker
));
2960 while (*p
++ == ','); /* comma-separated list */
2961 /* Ask for another packet of static tracepoint definition. */
2963 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2967 do_cleanups (old_chain
);
2972 /* Implement the to_get_ada_task_ptid function for the remote targets. */
2975 remote_get_ada_task_ptid (struct target_ops
*self
, long lwp
, long thread
)
2977 return ptid_build (ptid_get_pid (inferior_ptid
), 0, lwp
);
2981 /* Restart the remote side; this is an extended protocol operation. */
2984 extended_remote_restart (void)
2986 struct remote_state
*rs
= get_remote_state ();
2988 /* Send the restart command; for reasons I don't understand the
2989 remote side really expects a number after the "R". */
2990 xsnprintf (rs
->buf
, get_remote_packet_size (), "R%x", 0);
2993 remote_fileio_reset ();
2996 /* Clean up connection to a remote debugger. */
2999 remote_close (struct target_ops
*self
)
3001 struct remote_state
*rs
= get_remote_state ();
3003 if (rs
->remote_desc
== NULL
)
3004 return; /* already closed */
3006 /* Make sure we leave stdin registered in the event loop, and we
3007 don't leave the async SIGINT signal handler installed. */
3008 remote_terminal_ours (self
);
3010 serial_close (rs
->remote_desc
);
3011 rs
->remote_desc
= NULL
;
3013 /* We don't have a connection to the remote stub anymore. Get rid
3014 of all the inferiors and their threads we were controlling.
3015 Reset inferior_ptid to null_ptid first, as otherwise has_stack_frame
3016 will be unable to find the thread corresponding to (pid, 0, 0). */
3017 inferior_ptid
= null_ptid
;
3018 discard_all_inferiors ();
3020 /* We are closing the remote target, so we should discard
3021 everything of this target. */
3022 discard_pending_stop_replies_in_queue (rs
);
3024 if (remote_async_inferior_event_token
)
3025 delete_async_event_handler (&remote_async_inferior_event_token
);
3027 remote_notif_state_xfree (rs
->notif_state
);
3029 trace_reset_local_state ();
3032 /* Query the remote side for the text, data and bss offsets. */
3037 struct remote_state
*rs
= get_remote_state ();
3040 int lose
, num_segments
= 0, do_sections
, do_segments
;
3041 CORE_ADDR text_addr
, data_addr
, bss_addr
, segments
[2];
3042 struct section_offsets
*offs
;
3043 struct symfile_segment_data
*data
;
3045 if (symfile_objfile
== NULL
)
3048 putpkt ("qOffsets");
3049 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3052 if (buf
[0] == '\000')
3053 return; /* Return silently. Stub doesn't support
3057 warning (_("Remote failure reply: %s"), buf
);
3061 /* Pick up each field in turn. This used to be done with scanf, but
3062 scanf will make trouble if CORE_ADDR size doesn't match
3063 conversion directives correctly. The following code will work
3064 with any size of CORE_ADDR. */
3065 text_addr
= data_addr
= bss_addr
= 0;
3069 if (strncmp (ptr
, "Text=", 5) == 0)
3072 /* Don't use strtol, could lose on big values. */
3073 while (*ptr
&& *ptr
!= ';')
3074 text_addr
= (text_addr
<< 4) + fromhex (*ptr
++);
3076 if (strncmp (ptr
, ";Data=", 6) == 0)
3079 while (*ptr
&& *ptr
!= ';')
3080 data_addr
= (data_addr
<< 4) + fromhex (*ptr
++);
3085 if (!lose
&& strncmp (ptr
, ";Bss=", 5) == 0)
3088 while (*ptr
&& *ptr
!= ';')
3089 bss_addr
= (bss_addr
<< 4) + fromhex (*ptr
++);
3091 if (bss_addr
!= data_addr
)
3092 warning (_("Target reported unsupported offsets: %s"), buf
);
3097 else if (strncmp (ptr
, "TextSeg=", 8) == 0)
3100 /* Don't use strtol, could lose on big values. */
3101 while (*ptr
&& *ptr
!= ';')
3102 text_addr
= (text_addr
<< 4) + fromhex (*ptr
++);
3105 if (strncmp (ptr
, ";DataSeg=", 9) == 0)
3108 while (*ptr
&& *ptr
!= ';')
3109 data_addr
= (data_addr
<< 4) + fromhex (*ptr
++);
3117 error (_("Malformed response to offset query, %s"), buf
);
3118 else if (*ptr
!= '\0')
3119 warning (_("Target reported unsupported offsets: %s"), buf
);
3121 offs
= ((struct section_offsets
*)
3122 alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
)));
3123 memcpy (offs
, symfile_objfile
->section_offsets
,
3124 SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
));
3126 data
= get_symfile_segment_data (symfile_objfile
->obfd
);
3127 do_segments
= (data
!= NULL
);
3128 do_sections
= num_segments
== 0;
3130 if (num_segments
> 0)
3132 segments
[0] = text_addr
;
3133 segments
[1] = data_addr
;
3135 /* If we have two segments, we can still try to relocate everything
3136 by assuming that the .text and .data offsets apply to the whole
3137 text and data segments. Convert the offsets given in the packet
3138 to base addresses for symfile_map_offsets_to_segments. */
3139 else if (data
&& data
->num_segments
== 2)
3141 segments
[0] = data
->segment_bases
[0] + text_addr
;
3142 segments
[1] = data
->segment_bases
[1] + data_addr
;
3145 /* If the object file has only one segment, assume that it is text
3146 rather than data; main programs with no writable data are rare,
3147 but programs with no code are useless. Of course the code might
3148 have ended up in the data segment... to detect that we would need
3149 the permissions here. */
3150 else if (data
&& data
->num_segments
== 1)
3152 segments
[0] = data
->segment_bases
[0] + text_addr
;
3155 /* There's no way to relocate by segment. */
3161 int ret
= symfile_map_offsets_to_segments (symfile_objfile
->obfd
, data
,
3162 offs
, num_segments
, segments
);
3164 if (ret
== 0 && !do_sections
)
3165 error (_("Can not handle qOffsets TextSeg "
3166 "response with this symbol file"));
3173 free_symfile_segment_data (data
);
3177 offs
->offsets
[SECT_OFF_TEXT (symfile_objfile
)] = text_addr
;
3179 /* This is a temporary kludge to force data and bss to use the
3180 same offsets because that's what nlmconv does now. The real
3181 solution requires changes to the stub and remote.c that I
3182 don't have time to do right now. */
3184 offs
->offsets
[SECT_OFF_DATA (symfile_objfile
)] = data_addr
;
3185 offs
->offsets
[SECT_OFF_BSS (symfile_objfile
)] = data_addr
;
3188 objfile_relocate (symfile_objfile
, offs
);
3191 /* Callback for iterate_over_threads. Set the STOP_REQUESTED flags in
3192 threads we know are stopped already. This is used during the
3193 initial remote connection in non-stop mode --- threads that are
3194 reported as already being stopped are left stopped. */
3197 set_stop_requested_callback (struct thread_info
*thread
, void *data
)
3199 /* If we have a stop reply for this thread, it must be stopped. */
3200 if (peek_stop_reply (thread
->ptid
))
3201 set_stop_requested (thread
->ptid
, 1);
3206 /* Send interrupt_sequence to remote target. */
3208 send_interrupt_sequence (void)
3210 struct remote_state
*rs
= get_remote_state ();
3212 if (interrupt_sequence_mode
== interrupt_sequence_control_c
)
3213 remote_serial_write ("\x03", 1);
3214 else if (interrupt_sequence_mode
== interrupt_sequence_break
)
3215 serial_send_break (rs
->remote_desc
);
3216 else if (interrupt_sequence_mode
== interrupt_sequence_break_g
)
3218 serial_send_break (rs
->remote_desc
);
3219 remote_serial_write ("g", 1);
3222 internal_error (__FILE__
, __LINE__
,
3223 _("Invalid value for interrupt_sequence_mode: %s."),
3224 interrupt_sequence_mode
);
3228 /* If STOP_REPLY is a T stop reply, look for the "thread" register,
3229 and extract the PTID. Returns NULL_PTID if not found. */
3232 stop_reply_extract_thread (char *stop_reply
)
3234 if (stop_reply
[0] == 'T' && strlen (stop_reply
) > 3)
3238 /* Txx r:val ; r:val (...) */
3241 /* Look for "register" named "thread". */
3246 p1
= strchr (p
, ':');
3250 if (strncmp (p
, "thread", p1
- p
) == 0)
3251 return read_ptid (++p1
, &p
);
3253 p1
= strchr (p
, ';');
3265 /* Determine the remote side's current thread. If we have a stop
3266 reply handy (in WAIT_STATUS), maybe it's a T stop reply with a
3267 "thread" register we can extract the current thread from. If not,
3268 ask the remote which is the current thread with qC. The former
3269 method avoids a roundtrip. */
3272 get_current_thread (char *wait_status
)
3276 /* Note we don't use remote_parse_stop_reply as that makes use of
3277 the target architecture, which we haven't yet fully determined at
3279 if (wait_status
!= NULL
)
3280 ptid
= stop_reply_extract_thread (wait_status
);
3281 if (ptid_equal (ptid
, null_ptid
))
3282 ptid
= remote_current_thread (inferior_ptid
);
3287 /* Query the remote target for which is the current thread/process,
3288 add it to our tables, and update INFERIOR_PTID. The caller is
3289 responsible for setting the state such that the remote end is ready
3290 to return the current thread.
3292 This function is called after handling the '?' or 'vRun' packets,
3293 whose response is a stop reply from which we can also try
3294 extracting the thread. If the target doesn't support the explicit
3295 qC query, we infer the current thread from that stop reply, passed
3296 in in WAIT_STATUS, which may be NULL. */
3299 add_current_inferior_and_thread (char *wait_status
)
3301 struct remote_state
*rs
= get_remote_state ();
3303 ptid_t ptid
= null_ptid
;
3305 inferior_ptid
= null_ptid
;
3307 /* Now, if we have thread information, update inferior_ptid. */
3308 ptid
= get_current_thread (wait_status
);
3310 if (!ptid_equal (ptid
, null_ptid
))
3312 if (!remote_multi_process_p (rs
))
3315 inferior_ptid
= ptid
;
3319 /* Without this, some commands which require an active target
3320 (such as kill) won't work. This variable serves (at least)
3321 double duty as both the pid of the target process (if it has
3322 such), and as a flag indicating that a target is active. */
3323 inferior_ptid
= magic_null_ptid
;
3327 remote_add_inferior (fake_pid_p
, ptid_get_pid (inferior_ptid
), -1);
3329 /* Add the main thread. */
3330 add_thread_silent (inferior_ptid
);
3334 remote_start_remote (int from_tty
, struct target_ops
*target
, int extended_p
)
3336 struct remote_state
*rs
= get_remote_state ();
3337 struct packet_config
*noack_config
;
3338 char *wait_status
= NULL
;
3340 immediate_quit
++; /* Allow user to interrupt it. */
3343 if (interrupt_on_connect
)
3344 send_interrupt_sequence ();
3346 /* Ack any packet which the remote side has already sent. */
3347 serial_write (rs
->remote_desc
, "+", 1);
3349 /* Signal other parts that we're going through the initial setup,
3350 and so things may not be stable yet. */
3351 rs
->starting_up
= 1;
3353 /* The first packet we send to the target is the optional "supported
3354 packets" request. If the target can answer this, it will tell us
3355 which later probes to skip. */
3356 remote_query_supported ();
3358 /* If the stub wants to get a QAllow, compose one and send it. */
3359 if (remote_protocol_packets
[PACKET_QAllow
].support
!= PACKET_DISABLE
)
3360 remote_set_permissions ();
3362 /* Next, we possibly activate noack mode.
3364 If the QStartNoAckMode packet configuration is set to AUTO,
3365 enable noack mode if the stub reported a wish for it with
3368 If set to TRUE, then enable noack mode even if the stub didn't
3369 report it in qSupported. If the stub doesn't reply OK, the
3370 session ends with an error.
3372 If FALSE, then don't activate noack mode, regardless of what the
3373 stub claimed should be the default with qSupported. */
3375 noack_config
= &remote_protocol_packets
[PACKET_QStartNoAckMode
];
3377 if (noack_config
->detect
== AUTO_BOOLEAN_TRUE
3378 || (noack_config
->detect
== AUTO_BOOLEAN_AUTO
3379 && noack_config
->support
== PACKET_ENABLE
))
3381 putpkt ("QStartNoAckMode");
3382 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3383 if (packet_ok (rs
->buf
, noack_config
) == PACKET_OK
)
3389 /* Tell the remote that we are using the extended protocol. */
3391 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3394 /* Let the target know which signals it is allowed to pass down to
3396 update_signals_program_target ();
3398 /* Next, if the target can specify a description, read it. We do
3399 this before anything involving memory or registers. */
3400 target_find_description ();
3402 /* Next, now that we know something about the target, update the
3403 address spaces in the program spaces. */
3404 update_address_spaces ();
3406 /* On OSs where the list of libraries is global to all
3407 processes, we fetch them early. */
3408 if (gdbarch_has_global_solist (target_gdbarch ()))
3409 solib_add (NULL
, from_tty
, target
, auto_solib_add
);
3413 if (!rs
->non_stop_aware
)
3414 error (_("Non-stop mode requested, but remote "
3415 "does not support non-stop"));
3417 putpkt ("QNonStop:1");
3418 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3420 if (strcmp (rs
->buf
, "OK") != 0)
3421 error (_("Remote refused setting non-stop mode with: %s"), rs
->buf
);
3423 /* Find about threads and processes the stub is already
3424 controlling. We default to adding them in the running state.
3425 The '?' query below will then tell us about which threads are
3427 remote_threads_info (target
);
3429 else if (rs
->non_stop_aware
)
3431 /* Don't assume that the stub can operate in all-stop mode.
3432 Request it explicitly. */
3433 putpkt ("QNonStop:0");
3434 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3436 if (strcmp (rs
->buf
, "OK") != 0)
3437 error (_("Remote refused setting all-stop mode with: %s"), rs
->buf
);
3440 /* Upload TSVs regardless of whether the target is running or not. The
3441 remote stub, such as GDBserver, may have some predefined or builtin
3442 TSVs, even if the target is not running. */
3443 if (remote_get_trace_status (target
, current_trace_status ()) != -1)
3445 struct uploaded_tsv
*uploaded_tsvs
= NULL
;
3447 remote_upload_trace_state_variables (target
, &uploaded_tsvs
);
3448 merge_uploaded_trace_state_variables (&uploaded_tsvs
);
3451 /* Check whether the target is running now. */
3453 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3459 struct inferior
*inf
;
3461 if (rs
->buf
[0] == 'W' || rs
->buf
[0] == 'X')
3464 error (_("The target is not running (try extended-remote?)"));
3466 /* We're connected, but not running. Drop out before we
3467 call start_remote. */
3468 rs
->starting_up
= 0;
3473 /* Save the reply for later. */
3474 wait_status
= alloca (strlen (rs
->buf
) + 1);
3475 strcpy (wait_status
, rs
->buf
);
3478 /* Fetch thread list. */
3479 target_find_new_threads ();
3481 /* Let the stub know that we want it to return the thread. */
3482 set_continue_thread (minus_one_ptid
);
3484 if (thread_count () == 0)
3486 /* Target has no concept of threads at all. GDB treats
3487 non-threaded target as single-threaded; add a main
3489 add_current_inferior_and_thread (wait_status
);
3493 /* We have thread information; select the thread the target
3494 says should be current. If we're reconnecting to a
3495 multi-threaded program, this will ideally be the thread
3496 that last reported an event before GDB disconnected. */
3497 inferior_ptid
= get_current_thread (wait_status
);
3498 if (ptid_equal (inferior_ptid
, null_ptid
))
3500 /* Odd... The target was able to list threads, but not
3501 tell us which thread was current (no "thread"
3502 register in T stop reply?). Just pick the first
3503 thread in the thread list then. */
3504 inferior_ptid
= thread_list
->ptid
;
3508 /* init_wait_for_inferior should be called before get_offsets in order
3509 to manage `inserted' flag in bp loc in a correct state.
3510 breakpoint_init_inferior, called from init_wait_for_inferior, set
3511 `inserted' flag to 0, while before breakpoint_re_set, called from
3512 start_remote, set `inserted' flag to 1. In the initialization of
3513 inferior, breakpoint_init_inferior should be called first, and then
3514 breakpoint_re_set can be called. If this order is broken, state of
3515 `inserted' flag is wrong, and cause some problems on breakpoint
3517 init_wait_for_inferior ();
3519 get_offsets (); /* Get text, data & bss offsets. */
3521 /* If we could not find a description using qXfer, and we know
3522 how to do it some other way, try again. This is not
3523 supported for non-stop; it could be, but it is tricky if
3524 there are no stopped threads when we connect. */
3525 if (remote_read_description_p (target
)
3526 && gdbarch_target_desc (target_gdbarch ()) == NULL
)
3528 target_clear_description ();
3529 target_find_description ();
3532 /* Use the previously fetched status. */
3533 gdb_assert (wait_status
!= NULL
);
3534 strcpy (rs
->buf
, wait_status
);
3535 rs
->cached_wait_status
= 1;
3538 start_remote (from_tty
); /* Initialize gdb process mechanisms. */
3542 /* Clear WFI global state. Do this before finding about new
3543 threads and inferiors, and setting the current inferior.
3544 Otherwise we would clear the proceed status of the current
3545 inferior when we want its stop_soon state to be preserved
3546 (see notice_new_inferior). */
3547 init_wait_for_inferior ();
3549 /* In non-stop, we will either get an "OK", meaning that there
3550 are no stopped threads at this time; or, a regular stop
3551 reply. In the latter case, there may be more than one thread
3552 stopped --- we pull them all out using the vStopped
3554 if (strcmp (rs
->buf
, "OK") != 0)
3556 struct notif_client
*notif
= ¬if_client_stop
;
3558 /* remote_notif_get_pending_replies acks this one, and gets
3560 rs
->notif_state
->pending_event
[notif_client_stop
.id
]
3561 = remote_notif_parse (notif
, rs
->buf
);
3562 remote_notif_get_pending_events (notif
);
3564 /* Make sure that threads that were stopped remain
3566 iterate_over_threads (set_stop_requested_callback
, NULL
);
3569 if (target_can_async_p ())
3570 target_async (inferior_event_handler
, 0);
3572 if (thread_count () == 0)
3575 error (_("The target is not running (try extended-remote?)"));
3577 /* We're connected, but not running. Drop out before we
3578 call start_remote. */
3579 rs
->starting_up
= 0;
3583 /* Let the stub know that we want it to return the thread. */
3585 /* Force the stub to choose a thread. */
3586 set_general_thread (null_ptid
);
3589 inferior_ptid
= remote_current_thread (minus_one_ptid
);
3590 if (ptid_equal (inferior_ptid
, minus_one_ptid
))
3591 error (_("remote didn't report the current thread in non-stop mode"));
3593 get_offsets (); /* Get text, data & bss offsets. */
3595 /* In non-stop mode, any cached wait status will be stored in
3596 the stop reply queue. */
3597 gdb_assert (wait_status
== NULL
);
3599 /* Report all signals during attach/startup. */
3600 remote_pass_signals (target
, 0, NULL
);
3603 /* If we connected to a live target, do some additional setup. */
3604 if (target_has_execution
)
3606 if (symfile_objfile
) /* No use without a symbol-file. */
3607 remote_check_symbols ();
3610 /* Possibly the target has been engaged in a trace run started
3611 previously; find out where things are at. */
3612 if (remote_get_trace_status (target
, current_trace_status ()) != -1)
3614 struct uploaded_tp
*uploaded_tps
= NULL
;
3616 if (current_trace_status ()->running
)
3617 printf_filtered (_("Trace is already running on the target.\n"));
3619 remote_upload_tracepoints (target
, &uploaded_tps
);
3621 merge_uploaded_tracepoints (&uploaded_tps
);
3624 /* The thread and inferior lists are now synchronized with the
3625 target, our symbols have been relocated, and we're merged the
3626 target's tracepoints with ours. We're done with basic start
3628 rs
->starting_up
= 0;
3630 /* If breakpoints are global, insert them now. */
3631 if (gdbarch_has_global_breakpoints (target_gdbarch ())
3632 && breakpoints_always_inserted_mode ())
3633 insert_breakpoints ();
3636 /* Open a connection to a remote debugger.
3637 NAME is the filename used for communication. */
3640 remote_open (char *name
, int from_tty
)
3642 remote_open_1 (name
, from_tty
, &remote_ops
, 0);
3645 /* Open a connection to a remote debugger using the extended
3646 remote gdb protocol. NAME is the filename used for communication. */
3649 extended_remote_open (char *name
, int from_tty
)
3651 remote_open_1 (name
, from_tty
, &extended_remote_ops
, 1 /*extended_p */);
3654 /* Generic code for opening a connection to a remote target. */
3657 init_all_packet_configs (void)
3661 for (i
= 0; i
< PACKET_MAX
; i
++)
3662 update_packet_config (&remote_protocol_packets
[i
]);
3665 /* Symbol look-up. */
3668 remote_check_symbols (void)
3670 struct remote_state
*rs
= get_remote_state ();
3671 char *msg
, *reply
, *tmp
;
3672 struct minimal_symbol
*sym
;
3675 /* The remote side has no concept of inferiors that aren't running
3676 yet, it only knows about running processes. If we're connected
3677 but our current inferior is not running, we should not invite the
3678 remote target to request symbol lookups related to its
3679 (unrelated) current process. */
3680 if (!target_has_execution
)
3683 if (remote_protocol_packets
[PACKET_qSymbol
].support
== PACKET_DISABLE
)
3686 /* Make sure the remote is pointing at the right process. Note
3687 there's no way to select "no process". */
3688 set_general_process ();
3690 /* Allocate a message buffer. We can't reuse the input buffer in RS,
3691 because we need both at the same time. */
3692 msg
= alloca (get_remote_packet_size ());
3694 /* Invite target to request symbol lookups. */
3696 putpkt ("qSymbol::");
3697 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3698 packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_qSymbol
]);
3701 while (strncmp (reply
, "qSymbol:", 8) == 0)
3704 end
= hex2bin (tmp
, (gdb_byte
*) msg
, strlen (tmp
) / 2);
3706 sym
= lookup_minimal_symbol (msg
, NULL
, NULL
);
3708 xsnprintf (msg
, get_remote_packet_size (), "qSymbol::%s", &reply
[8]);
3711 int addr_size
= gdbarch_addr_bit (target_gdbarch ()) / 8;
3712 CORE_ADDR sym_addr
= SYMBOL_VALUE_ADDRESS (sym
);
3714 /* If this is a function address, return the start of code
3715 instead of any data function descriptor. */
3716 sym_addr
= gdbarch_convert_from_func_ptr_addr (target_gdbarch (),
3720 xsnprintf (msg
, get_remote_packet_size (), "qSymbol:%s:%s",
3721 phex_nz (sym_addr
, addr_size
), &reply
[8]);
3725 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3730 static struct serial
*
3731 remote_serial_open (char *name
)
3733 static int udp_warning
= 0;
3735 /* FIXME: Parsing NAME here is a hack. But we want to warn here instead
3736 of in ser-tcp.c, because it is the remote protocol assuming that the
3737 serial connection is reliable and not the serial connection promising
3739 if (!udp_warning
&& strncmp (name
, "udp:", 4) == 0)
3741 warning (_("The remote protocol may be unreliable over UDP.\n"
3742 "Some events may be lost, rendering further debugging "
3747 return serial_open (name
);
3750 /* Inform the target of our permission settings. The permission flags
3751 work without this, but if the target knows the settings, it can do
3752 a couple things. First, it can add its own check, to catch cases
3753 that somehow manage to get by the permissions checks in target
3754 methods. Second, if the target is wired to disallow particular
3755 settings (for instance, a system in the field that is not set up to
3756 be able to stop at a breakpoint), it can object to any unavailable
3760 remote_set_permissions (void)
3762 struct remote_state
*rs
= get_remote_state ();
3764 xsnprintf (rs
->buf
, get_remote_packet_size (), "QAllow:"
3765 "WriteReg:%x;WriteMem:%x;"
3766 "InsertBreak:%x;InsertTrace:%x;"
3767 "InsertFastTrace:%x;Stop:%x",
3768 may_write_registers
, may_write_memory
,
3769 may_insert_breakpoints
, may_insert_tracepoints
,
3770 may_insert_fast_tracepoints
, may_stop
);
3772 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3774 /* If the target didn't like the packet, warn the user. Do not try
3775 to undo the user's settings, that would just be maddening. */
3776 if (strcmp (rs
->buf
, "OK") != 0)
3777 warning (_("Remote refused setting permissions with: %s"), rs
->buf
);
3780 /* This type describes each known response to the qSupported
3782 struct protocol_feature
3784 /* The name of this protocol feature. */
3787 /* The default for this protocol feature. */
3788 enum packet_support default_support
;
3790 /* The function to call when this feature is reported, or after
3791 qSupported processing if the feature is not supported.
3792 The first argument points to this structure. The second
3793 argument indicates whether the packet requested support be
3794 enabled, disabled, or probed (or the default, if this function
3795 is being called at the end of processing and this feature was
3796 not reported). The third argument may be NULL; if not NULL, it
3797 is a NUL-terminated string taken from the packet following
3798 this feature's name and an equals sign. */
3799 void (*func
) (const struct protocol_feature
*, enum packet_support
,
3802 /* The corresponding packet for this feature. Only used if
3803 FUNC is remote_supported_packet. */
3808 remote_supported_packet (const struct protocol_feature
*feature
,
3809 enum packet_support support
,
3810 const char *argument
)
3814 warning (_("Remote qSupported response supplied an unexpected value for"
3815 " \"%s\"."), feature
->name
);
3819 if (remote_protocol_packets
[feature
->packet
].support
3820 == PACKET_SUPPORT_UNKNOWN
)
3821 remote_protocol_packets
[feature
->packet
].support
= support
;
3825 remote_packet_size (const struct protocol_feature
*feature
,
3826 enum packet_support support
, const char *value
)
3828 struct remote_state
*rs
= get_remote_state ();
3833 if (support
!= PACKET_ENABLE
)
3836 if (value
== NULL
|| *value
== '\0')
3838 warning (_("Remote target reported \"%s\" without a size."),
3844 packet_size
= strtol (value
, &value_end
, 16);
3845 if (errno
!= 0 || *value_end
!= '\0' || packet_size
< 0)
3847 warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."),
3848 feature
->name
, value
);
3852 if (packet_size
> MAX_REMOTE_PACKET_SIZE
)
3854 warning (_("limiting remote suggested packet size (%d bytes) to %d"),
3855 packet_size
, MAX_REMOTE_PACKET_SIZE
);
3856 packet_size
= MAX_REMOTE_PACKET_SIZE
;
3859 /* Record the new maximum packet size. */
3860 rs
->explicit_packet_size
= packet_size
;
3864 remote_multi_process_feature (const struct protocol_feature
*feature
,
3865 enum packet_support support
, const char *value
)
3867 struct remote_state
*rs
= get_remote_state ();
3869 rs
->multi_process_aware
= (support
== PACKET_ENABLE
);
3873 remote_non_stop_feature (const struct protocol_feature
*feature
,
3874 enum packet_support support
, const char *value
)
3876 struct remote_state
*rs
= get_remote_state ();
3878 rs
->non_stop_aware
= (support
== PACKET_ENABLE
);
3882 remote_cond_tracepoint_feature (const struct protocol_feature
*feature
,
3883 enum packet_support support
,
3886 struct remote_state
*rs
= get_remote_state ();
3888 rs
->cond_tracepoints
= (support
== PACKET_ENABLE
);
3892 remote_cond_breakpoint_feature (const struct protocol_feature
*feature
,
3893 enum packet_support support
,
3896 struct remote_state
*rs
= get_remote_state ();
3898 rs
->cond_breakpoints
= (support
== PACKET_ENABLE
);
3902 remote_breakpoint_commands_feature (const struct protocol_feature
*feature
,
3903 enum packet_support support
,
3906 struct remote_state
*rs
= get_remote_state ();
3908 rs
->breakpoint_commands
= (support
== PACKET_ENABLE
);
3912 remote_fast_tracepoint_feature (const struct protocol_feature
*feature
,
3913 enum packet_support support
,
3916 struct remote_state
*rs
= get_remote_state ();
3918 rs
->fast_tracepoints
= (support
== PACKET_ENABLE
);
3922 remote_static_tracepoint_feature (const struct protocol_feature
*feature
,
3923 enum packet_support support
,
3926 struct remote_state
*rs
= get_remote_state ();
3928 rs
->static_tracepoints
= (support
== PACKET_ENABLE
);
3932 remote_install_in_trace_feature (const struct protocol_feature
*feature
,
3933 enum packet_support support
,
3936 struct remote_state
*rs
= get_remote_state ();
3938 rs
->install_in_trace
= (support
== PACKET_ENABLE
);
3942 remote_disconnected_tracing_feature (const struct protocol_feature
*feature
,
3943 enum packet_support support
,
3946 struct remote_state
*rs
= get_remote_state ();
3948 rs
->disconnected_tracing
= (support
== PACKET_ENABLE
);
3952 remote_enable_disable_tracepoint_feature (const struct protocol_feature
*feature
,
3953 enum packet_support support
,
3956 struct remote_state
*rs
= get_remote_state ();
3958 rs
->enable_disable_tracepoints
= (support
== PACKET_ENABLE
);
3962 remote_string_tracing_feature (const struct protocol_feature
*feature
,
3963 enum packet_support support
,
3966 struct remote_state
*rs
= get_remote_state ();
3968 rs
->string_tracing
= (support
== PACKET_ENABLE
);
3972 remote_augmented_libraries_svr4_read_feature
3973 (const struct protocol_feature
*feature
,
3974 enum packet_support support
, const char *value
)
3976 struct remote_state
*rs
= get_remote_state ();
3978 rs
->augmented_libraries_svr4_read
= (support
== PACKET_ENABLE
);
3981 static const struct protocol_feature remote_protocol_features
[] = {
3982 { "PacketSize", PACKET_DISABLE
, remote_packet_size
, -1 },
3983 { "qXfer:auxv:read", PACKET_DISABLE
, remote_supported_packet
,
3984 PACKET_qXfer_auxv
},
3985 { "qXfer:features:read", PACKET_DISABLE
, remote_supported_packet
,
3986 PACKET_qXfer_features
},
3987 { "qXfer:libraries:read", PACKET_DISABLE
, remote_supported_packet
,
3988 PACKET_qXfer_libraries
},
3989 { "qXfer:libraries-svr4:read", PACKET_DISABLE
, remote_supported_packet
,
3990 PACKET_qXfer_libraries_svr4
},
3991 { "augmented-libraries-svr4-read", PACKET_DISABLE
,
3992 remote_augmented_libraries_svr4_read_feature
, -1 },
3993 { "qXfer:memory-map:read", PACKET_DISABLE
, remote_supported_packet
,
3994 PACKET_qXfer_memory_map
},
3995 { "qXfer:spu:read", PACKET_DISABLE
, remote_supported_packet
,
3996 PACKET_qXfer_spu_read
},
3997 { "qXfer:spu:write", PACKET_DISABLE
, remote_supported_packet
,
3998 PACKET_qXfer_spu_write
},
3999 { "qXfer:osdata:read", PACKET_DISABLE
, remote_supported_packet
,
4000 PACKET_qXfer_osdata
},
4001 { "qXfer:threads:read", PACKET_DISABLE
, remote_supported_packet
,
4002 PACKET_qXfer_threads
},
4003 { "qXfer:traceframe-info:read", PACKET_DISABLE
, remote_supported_packet
,
4004 PACKET_qXfer_traceframe_info
},
4005 { "QPassSignals", PACKET_DISABLE
, remote_supported_packet
,
4006 PACKET_QPassSignals
},
4007 { "QProgramSignals", PACKET_DISABLE
, remote_supported_packet
,
4008 PACKET_QProgramSignals
},
4009 { "QStartNoAckMode", PACKET_DISABLE
, remote_supported_packet
,
4010 PACKET_QStartNoAckMode
},
4011 { "multiprocess", PACKET_DISABLE
, remote_multi_process_feature
, -1 },
4012 { "QNonStop", PACKET_DISABLE
, remote_non_stop_feature
, -1 },
4013 { "qXfer:siginfo:read", PACKET_DISABLE
, remote_supported_packet
,
4014 PACKET_qXfer_siginfo_read
},
4015 { "qXfer:siginfo:write", PACKET_DISABLE
, remote_supported_packet
,
4016 PACKET_qXfer_siginfo_write
},
4017 { "ConditionalTracepoints", PACKET_DISABLE
, remote_cond_tracepoint_feature
,
4018 PACKET_ConditionalTracepoints
},
4019 { "ConditionalBreakpoints", PACKET_DISABLE
, remote_cond_breakpoint_feature
,
4020 PACKET_ConditionalBreakpoints
},
4021 { "BreakpointCommands", PACKET_DISABLE
, remote_breakpoint_commands_feature
,
4022 PACKET_BreakpointCommands
},
4023 { "FastTracepoints", PACKET_DISABLE
, remote_fast_tracepoint_feature
,
4024 PACKET_FastTracepoints
},
4025 { "StaticTracepoints", PACKET_DISABLE
, remote_static_tracepoint_feature
,
4026 PACKET_StaticTracepoints
},
4027 {"InstallInTrace", PACKET_DISABLE
, remote_install_in_trace_feature
,
4028 PACKET_InstallInTrace
},
4029 { "DisconnectedTracing", PACKET_DISABLE
, remote_disconnected_tracing_feature
,
4031 { "ReverseContinue", PACKET_DISABLE
, remote_supported_packet
,
4033 { "ReverseStep", PACKET_DISABLE
, remote_supported_packet
,
4035 { "TracepointSource", PACKET_DISABLE
, remote_supported_packet
,
4036 PACKET_TracepointSource
},
4037 { "QAllow", PACKET_DISABLE
, remote_supported_packet
,
4039 { "EnableDisableTracepoints", PACKET_DISABLE
,
4040 remote_enable_disable_tracepoint_feature
, -1 },
4041 { "qXfer:fdpic:read", PACKET_DISABLE
, remote_supported_packet
,
4042 PACKET_qXfer_fdpic
},
4043 { "qXfer:uib:read", PACKET_DISABLE
, remote_supported_packet
,
4045 { "QDisableRandomization", PACKET_DISABLE
, remote_supported_packet
,
4046 PACKET_QDisableRandomization
},
4047 { "QAgent", PACKET_DISABLE
, remote_supported_packet
, PACKET_QAgent
},
4048 { "QTBuffer:size", PACKET_DISABLE
,
4049 remote_supported_packet
, PACKET_QTBuffer_size
},
4050 { "tracenz", PACKET_DISABLE
,
4051 remote_string_tracing_feature
, -1 },
4052 { "Qbtrace:off", PACKET_DISABLE
, remote_supported_packet
, PACKET_Qbtrace_off
},
4053 { "Qbtrace:bts", PACKET_DISABLE
, remote_supported_packet
, PACKET_Qbtrace_bts
},
4054 { "qXfer:btrace:read", PACKET_DISABLE
, remote_supported_packet
,
4055 PACKET_qXfer_btrace
}
4058 static char *remote_support_xml
;
4060 /* Register string appended to "xmlRegisters=" in qSupported query. */
4063 register_remote_support_xml (const char *xml
)
4065 #if defined(HAVE_LIBEXPAT)
4066 if (remote_support_xml
== NULL
)
4067 remote_support_xml
= concat ("xmlRegisters=", xml
, (char *) NULL
);
4070 char *copy
= xstrdup (remote_support_xml
+ 13);
4071 char *p
= strtok (copy
, ",");
4075 if (strcmp (p
, xml
) == 0)
4082 while ((p
= strtok (NULL
, ",")) != NULL
);
4085 remote_support_xml
= reconcat (remote_support_xml
,
4086 remote_support_xml
, ",", xml
,
4093 remote_query_supported_append (char *msg
, const char *append
)
4096 return reconcat (msg
, msg
, ";", append
, (char *) NULL
);
4098 return xstrdup (append
);
4102 remote_query_supported (void)
4104 struct remote_state
*rs
= get_remote_state ();
4107 unsigned char seen
[ARRAY_SIZE (remote_protocol_features
)];
4109 /* The packet support flags are handled differently for this packet
4110 than for most others. We treat an error, a disabled packet, and
4111 an empty response identically: any features which must be reported
4112 to be used will be automatically disabled. An empty buffer
4113 accomplishes this, since that is also the representation for a list
4114 containing no features. */
4117 if (remote_protocol_packets
[PACKET_qSupported
].support
!= PACKET_DISABLE
)
4120 struct cleanup
*old_chain
= make_cleanup (free_current_contents
, &q
);
4122 q
= remote_query_supported_append (q
, "multiprocess+");
4124 if (remote_support_xml
)
4125 q
= remote_query_supported_append (q
, remote_support_xml
);
4127 q
= remote_query_supported_append (q
, "qRelocInsn+");
4129 q
= reconcat (q
, "qSupported:", q
, (char *) NULL
);
4132 do_cleanups (old_chain
);
4134 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4136 /* If an error occured, warn, but do not return - just reset the
4137 buffer to empty and go on to disable features. */
4138 if (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_qSupported
])
4141 warning (_("Remote failure reply: %s"), rs
->buf
);
4146 memset (seen
, 0, sizeof (seen
));
4151 enum packet_support is_supported
;
4152 char *p
, *end
, *name_end
, *value
;
4154 /* First separate out this item from the rest of the packet. If
4155 there's another item after this, we overwrite the separator
4156 (terminated strings are much easier to work with). */
4158 end
= strchr (p
, ';');
4161 end
= p
+ strlen (p
);
4171 warning (_("empty item in \"qSupported\" response"));
4176 name_end
= strchr (p
, '=');
4179 /* This is a name=value entry. */
4180 is_supported
= PACKET_ENABLE
;
4181 value
= name_end
+ 1;
4190 is_supported
= PACKET_ENABLE
;
4194 is_supported
= PACKET_DISABLE
;
4198 is_supported
= PACKET_SUPPORT_UNKNOWN
;
4202 warning (_("unrecognized item \"%s\" "
4203 "in \"qSupported\" response"), p
);
4209 for (i
= 0; i
< ARRAY_SIZE (remote_protocol_features
); i
++)
4210 if (strcmp (remote_protocol_features
[i
].name
, p
) == 0)
4212 const struct protocol_feature
*feature
;
4215 feature
= &remote_protocol_features
[i
];
4216 feature
->func (feature
, is_supported
, value
);
4221 /* If we increased the packet size, make sure to increase the global
4222 buffer size also. We delay this until after parsing the entire
4223 qSupported packet, because this is the same buffer we were
4225 if (rs
->buf_size
< rs
->explicit_packet_size
)
4227 rs
->buf_size
= rs
->explicit_packet_size
;
4228 rs
->buf
= xrealloc (rs
->buf
, rs
->buf_size
);
4231 /* Handle the defaults for unmentioned features. */
4232 for (i
= 0; i
< ARRAY_SIZE (remote_protocol_features
); i
++)
4235 const struct protocol_feature
*feature
;
4237 feature
= &remote_protocol_features
[i
];
4238 feature
->func (feature
, feature
->default_support
, NULL
);
4242 /* Remove any of the remote.c targets from target stack. Upper targets depend
4243 on it so remove them first. */
4246 remote_unpush_target (void)
4248 pop_all_targets_above (process_stratum
- 1);
4252 remote_open_1 (char *name
, int from_tty
,
4253 struct target_ops
*target
, int extended_p
)
4255 struct remote_state
*rs
= get_remote_state ();
4258 error (_("To open a remote debug connection, you need to specify what\n"
4259 "serial device is attached to the remote system\n"
4260 "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."));
4262 /* See FIXME above. */
4263 if (!target_async_permitted
)
4264 wait_forever_enabled_p
= 1;
4266 /* If we're connected to a running target, target_preopen will kill it.
4267 Ask this question first, before target_preopen has a chance to kill
4269 if (rs
->remote_desc
!= NULL
&& !have_inferiors ())
4272 && !query (_("Already connected to a remote target. Disconnect? ")))
4273 error (_("Still connected."));
4276 /* Here the possibly existing remote target gets unpushed. */
4277 target_preopen (from_tty
);
4279 /* Make sure we send the passed signals list the next time we resume. */
4280 xfree (rs
->last_pass_packet
);
4281 rs
->last_pass_packet
= NULL
;
4283 /* Make sure we send the program signals list the next time we
4285 xfree (rs
->last_program_signals_packet
);
4286 rs
->last_program_signals_packet
= NULL
;
4288 remote_fileio_reset ();
4289 reopen_exec_file ();
4292 rs
->remote_desc
= remote_serial_open (name
);
4293 if (!rs
->remote_desc
)
4294 perror_with_name (name
);
4296 if (baud_rate
!= -1)
4298 if (serial_setbaudrate (rs
->remote_desc
, baud_rate
))
4300 /* The requested speed could not be set. Error out to
4301 top level after closing remote_desc. Take care to
4302 set remote_desc to NULL to avoid closing remote_desc
4304 serial_close (rs
->remote_desc
);
4305 rs
->remote_desc
= NULL
;
4306 perror_with_name (name
);
4310 serial_raw (rs
->remote_desc
);
4312 /* If there is something sitting in the buffer we might take it as a
4313 response to a command, which would be bad. */
4314 serial_flush_input (rs
->remote_desc
);
4318 puts_filtered ("Remote debugging using ");
4319 puts_filtered (name
);
4320 puts_filtered ("\n");
4322 push_target (target
); /* Switch to using remote target now. */
4324 /* Register extra event sources in the event loop. */
4325 remote_async_inferior_event_token
4326 = create_async_event_handler (remote_async_inferior_event_handler
,
4328 rs
->notif_state
= remote_notif_state_allocate ();
4330 /* Reset the target state; these things will be queried either by
4331 remote_query_supported or as they are needed. */
4332 init_all_packet_configs ();
4333 rs
->cached_wait_status
= 0;
4334 rs
->explicit_packet_size
= 0;
4336 rs
->multi_process_aware
= 0;
4337 rs
->extended
= extended_p
;
4338 rs
->non_stop_aware
= 0;
4339 rs
->waiting_for_stop_reply
= 0;
4340 rs
->ctrlc_pending_p
= 0;
4342 rs
->general_thread
= not_sent_ptid
;
4343 rs
->continue_thread
= not_sent_ptid
;
4344 rs
->remote_traceframe_number
= -1;
4346 /* Probe for ability to use "ThreadInfo" query, as required. */
4347 rs
->use_threadinfo_query
= 1;
4348 rs
->use_threadextra_query
= 1;
4350 if (target_async_permitted
)
4352 /* With this target we start out by owning the terminal. */
4353 remote_async_terminal_ours_p
= 1;
4355 /* FIXME: cagney/1999-09-23: During the initial connection it is
4356 assumed that the target is already ready and able to respond to
4357 requests. Unfortunately remote_start_remote() eventually calls
4358 wait_for_inferior() with no timeout. wait_forever_enabled_p gets
4359 around this. Eventually a mechanism that allows
4360 wait_for_inferior() to expect/get timeouts will be
4362 wait_forever_enabled_p
= 0;
4365 /* First delete any symbols previously loaded from shared libraries. */
4366 no_shared_libraries (NULL
, 0);
4369 init_thread_list ();
4371 /* Start the remote connection. If error() or QUIT, discard this
4372 target (we'd otherwise be in an inconsistent state) and then
4373 propogate the error on up the exception chain. This ensures that
4374 the caller doesn't stumble along blindly assuming that the
4375 function succeeded. The CLI doesn't have this problem but other
4376 UI's, such as MI do.
4378 FIXME: cagney/2002-05-19: Instead of re-throwing the exception,
4379 this function should return an error indication letting the
4380 caller restore the previous state. Unfortunately the command
4381 ``target remote'' is directly wired to this function making that
4382 impossible. On a positive note, the CLI side of this problem has
4383 been fixed - the function set_cmd_context() makes it possible for
4384 all the ``target ....'' commands to share a common callback
4385 function. See cli-dump.c. */
4387 volatile struct gdb_exception ex
;
4389 TRY_CATCH (ex
, RETURN_MASK_ALL
)
4391 remote_start_remote (from_tty
, target
, extended_p
);
4395 /* Pop the partially set up target - unless something else did
4396 already before throwing the exception. */
4397 if (rs
->remote_desc
!= NULL
)
4398 remote_unpush_target ();
4399 if (target_async_permitted
)
4400 wait_forever_enabled_p
= 1;
4401 throw_exception (ex
);
4405 if (target_async_permitted
)
4406 wait_forever_enabled_p
= 1;
4409 /* This takes a program previously attached to and detaches it. After
4410 this is done, GDB can be used to debug some other program. We
4411 better not have left any breakpoints in the target program or it'll
4412 die when it hits one. */
4415 remote_detach_1 (const char *args
, int from_tty
, int extended
)
4417 int pid
= ptid_get_pid (inferior_ptid
);
4418 struct remote_state
*rs
= get_remote_state ();
4421 error (_("Argument given to \"detach\" when remotely debugging."));
4423 if (!target_has_execution
)
4424 error (_("No process to detach from."));
4428 char *exec_file
= get_exec_file (0);
4429 if (exec_file
== NULL
)
4431 printf_unfiltered (_("Detaching from program: %s, %s\n"), exec_file
,
4432 target_pid_to_str (pid_to_ptid (pid
)));
4433 gdb_flush (gdb_stdout
);
4436 /* Tell the remote target to detach. */
4437 if (remote_multi_process_p (rs
))
4438 xsnprintf (rs
->buf
, get_remote_packet_size (), "D;%x", pid
);
4440 strcpy (rs
->buf
, "D");
4443 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4445 if (rs
->buf
[0] == 'O' && rs
->buf
[1] == 'K')
4447 else if (rs
->buf
[0] == '\0')
4448 error (_("Remote doesn't know how to detach"));
4450 error (_("Can't detach process."));
4452 if (from_tty
&& !extended
)
4453 puts_filtered (_("Ending remote debugging.\n"));
4455 target_mourn_inferior ();
4459 remote_detach (struct target_ops
*ops
, const char *args
, int from_tty
)
4461 remote_detach_1 (args
, from_tty
, 0);
4465 extended_remote_detach (struct target_ops
*ops
, const char *args
, int from_tty
)
4467 remote_detach_1 (args
, from_tty
, 1);
4470 /* Same as remote_detach, but don't send the "D" packet; just disconnect. */
4473 remote_disconnect (struct target_ops
*target
, char *args
, int from_tty
)
4476 error (_("Argument given to \"disconnect\" when remotely debugging."));
4478 /* Make sure we unpush even the extended remote targets; mourn
4479 won't do it. So call remote_mourn_1 directly instead of
4480 target_mourn_inferior. */
4481 remote_mourn_1 (target
);
4484 puts_filtered ("Ending remote debugging.\n");
4487 /* Attach to the process specified by ARGS. If FROM_TTY is non-zero,
4488 be chatty about it. */
4491 extended_remote_attach_1 (struct target_ops
*target
, char *args
, int from_tty
)
4493 struct remote_state
*rs
= get_remote_state ();
4495 char *wait_status
= NULL
;
4497 pid
= parse_pid_to_attach (args
);
4499 /* Remote PID can be freely equal to getpid, do not check it here the same
4500 way as in other targets. */
4502 if (remote_protocol_packets
[PACKET_vAttach
].support
== PACKET_DISABLE
)
4503 error (_("This target does not support attaching to a process"));
4507 char *exec_file
= get_exec_file (0);
4510 printf_unfiltered (_("Attaching to program: %s, %s\n"), exec_file
,
4511 target_pid_to_str (pid_to_ptid (pid
)));
4513 printf_unfiltered (_("Attaching to %s\n"),
4514 target_pid_to_str (pid_to_ptid (pid
)));
4516 gdb_flush (gdb_stdout
);
4519 xsnprintf (rs
->buf
, get_remote_packet_size (), "vAttach;%x", pid
);
4521 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4523 if (packet_ok (rs
->buf
,
4524 &remote_protocol_packets
[PACKET_vAttach
]) == PACKET_OK
)
4528 /* Save the reply for later. */
4529 wait_status
= alloca (strlen (rs
->buf
) + 1);
4530 strcpy (wait_status
, rs
->buf
);
4532 else if (strcmp (rs
->buf
, "OK") != 0)
4533 error (_("Attaching to %s failed with: %s"),
4534 target_pid_to_str (pid_to_ptid (pid
)),
4537 else if (remote_protocol_packets
[PACKET_vAttach
].support
== PACKET_DISABLE
)
4538 error (_("This target does not support attaching to a process"));
4540 error (_("Attaching to %s failed"),
4541 target_pid_to_str (pid_to_ptid (pid
)));
4543 set_current_inferior (remote_add_inferior (0, pid
, 1));
4545 inferior_ptid
= pid_to_ptid (pid
);
4549 struct thread_info
*thread
;
4551 /* Get list of threads. */
4552 remote_threads_info (target
);
4554 thread
= first_thread_of_process (pid
);
4556 inferior_ptid
= thread
->ptid
;
4558 inferior_ptid
= pid_to_ptid (pid
);
4560 /* Invalidate our notion of the remote current thread. */
4561 record_currthread (rs
, minus_one_ptid
);
4565 /* Now, if we have thread information, update inferior_ptid. */
4566 inferior_ptid
= remote_current_thread (inferior_ptid
);
4568 /* Add the main thread to the thread list. */
4569 add_thread_silent (inferior_ptid
);
4572 /* Next, if the target can specify a description, read it. We do
4573 this before anything involving memory or registers. */
4574 target_find_description ();
4578 /* Use the previously fetched status. */
4579 gdb_assert (wait_status
!= NULL
);
4581 if (target_can_async_p ())
4583 struct notif_event
*reply
4584 = remote_notif_parse (¬if_client_stop
, wait_status
);
4586 push_stop_reply ((struct stop_reply
*) reply
);
4588 target_async (inferior_event_handler
, 0);
4592 gdb_assert (wait_status
!= NULL
);
4593 strcpy (rs
->buf
, wait_status
);
4594 rs
->cached_wait_status
= 1;
4598 gdb_assert (wait_status
== NULL
);
4602 extended_remote_attach (struct target_ops
*ops
, char *args
, int from_tty
)
4604 extended_remote_attach_1 (ops
, args
, from_tty
);
4608 /* Check for the availability of vCont. This function should also check
4612 remote_vcont_probe (struct remote_state
*rs
)
4616 strcpy (rs
->buf
, "vCont?");
4618 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4621 /* Make sure that the features we assume are supported. */
4622 if (strncmp (buf
, "vCont", 5) == 0)
4625 int support_s
, support_S
, support_c
, support_C
;
4631 rs
->supports_vCont
.t
= 0;
4632 rs
->supports_vCont
.r
= 0;
4633 while (p
&& *p
== ';')
4636 if (*p
== 's' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4638 else if (*p
== 'S' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4640 else if (*p
== 'c' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4642 else if (*p
== 'C' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4644 else if (*p
== 't' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4645 rs
->supports_vCont
.t
= 1;
4646 else if (*p
== 'r' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4647 rs
->supports_vCont
.r
= 1;
4649 p
= strchr (p
, ';');
4652 /* If s, S, c, and C are not all supported, we can't use vCont. Clearing
4653 BUF will make packet_ok disable the packet. */
4654 if (!support_s
|| !support_S
|| !support_c
|| !support_C
)
4658 packet_ok (buf
, &remote_protocol_packets
[PACKET_vCont
]);
4661 /* Helper function for building "vCont" resumptions. Write a
4662 resumption to P. ENDP points to one-passed-the-end of the buffer
4663 we're allowed to write to. Returns BUF+CHARACTERS_WRITTEN. The
4664 thread to be resumed is PTID; STEP and SIGGNAL indicate whether the
4665 resumed thread should be single-stepped and/or signalled. If PTID
4666 equals minus_one_ptid, then all threads are resumed; if PTID
4667 represents a process, then all threads of the process are resumed;
4668 the thread to be stepped and/or signalled is given in the global
4672 append_resumption (char *p
, char *endp
,
4673 ptid_t ptid
, int step
, enum gdb_signal siggnal
)
4675 struct remote_state
*rs
= get_remote_state ();
4677 if (step
&& siggnal
!= GDB_SIGNAL_0
)
4678 p
+= xsnprintf (p
, endp
- p
, ";S%02x", siggnal
);
4680 /* GDB is willing to range step. */
4681 && use_range_stepping
4682 /* Target supports range stepping. */
4683 && rs
->supports_vCont
.r
4684 /* We don't currently support range stepping multiple
4685 threads with a wildcard (though the protocol allows it,
4686 so stubs shouldn't make an active effort to forbid
4688 && !(remote_multi_process_p (rs
) && ptid_is_pid (ptid
)))
4690 struct thread_info
*tp
;
4692 if (ptid_equal (ptid
, minus_one_ptid
))
4694 /* If we don't know about the target thread's tid, then
4695 we're resuming magic_null_ptid (see caller). */
4696 tp
= find_thread_ptid (magic_null_ptid
);
4699 tp
= find_thread_ptid (ptid
);
4700 gdb_assert (tp
!= NULL
);
4702 if (tp
->control
.may_range_step
)
4704 int addr_size
= gdbarch_addr_bit (target_gdbarch ()) / 8;
4706 p
+= xsnprintf (p
, endp
- p
, ";r%s,%s",
4707 phex_nz (tp
->control
.step_range_start
,
4709 phex_nz (tp
->control
.step_range_end
,
4713 p
+= xsnprintf (p
, endp
- p
, ";s");
4716 p
+= xsnprintf (p
, endp
- p
, ";s");
4717 else if (siggnal
!= GDB_SIGNAL_0
)
4718 p
+= xsnprintf (p
, endp
- p
, ";C%02x", siggnal
);
4720 p
+= xsnprintf (p
, endp
- p
, ";c");
4722 if (remote_multi_process_p (rs
) && ptid_is_pid (ptid
))
4726 /* All (-1) threads of process. */
4727 nptid
= ptid_build (ptid_get_pid (ptid
), 0, -1);
4729 p
+= xsnprintf (p
, endp
- p
, ":");
4730 p
= write_ptid (p
, endp
, nptid
);
4732 else if (!ptid_equal (ptid
, minus_one_ptid
))
4734 p
+= xsnprintf (p
, endp
- p
, ":");
4735 p
= write_ptid (p
, endp
, ptid
);
4741 /* Append a vCont continue-with-signal action for threads that have a
4742 non-zero stop signal. */
4745 append_pending_thread_resumptions (char *p
, char *endp
, ptid_t ptid
)
4747 struct thread_info
*thread
;
4749 ALL_THREADS (thread
)
4750 if (ptid_match (thread
->ptid
, ptid
)
4751 && !ptid_equal (inferior_ptid
, thread
->ptid
)
4752 && thread
->suspend
.stop_signal
!= GDB_SIGNAL_0
4753 && signal_pass_state (thread
->suspend
.stop_signal
))
4755 p
= append_resumption (p
, endp
, thread
->ptid
,
4756 0, thread
->suspend
.stop_signal
);
4757 thread
->suspend
.stop_signal
= GDB_SIGNAL_0
;
4763 /* Resume the remote inferior by using a "vCont" packet. The thread
4764 to be resumed is PTID; STEP and SIGGNAL indicate whether the
4765 resumed thread should be single-stepped and/or signalled. If PTID
4766 equals minus_one_ptid, then all threads are resumed; the thread to
4767 be stepped and/or signalled is given in the global INFERIOR_PTID.
4768 This function returns non-zero iff it resumes the inferior.
4770 This function issues a strict subset of all possible vCont commands at the
4774 remote_vcont_resume (ptid_t ptid
, int step
, enum gdb_signal siggnal
)
4776 struct remote_state
*rs
= get_remote_state ();
4780 if (remote_protocol_packets
[PACKET_vCont
].support
== PACKET_SUPPORT_UNKNOWN
)
4781 remote_vcont_probe (rs
);
4783 if (remote_protocol_packets
[PACKET_vCont
].support
== PACKET_DISABLE
)
4787 endp
= rs
->buf
+ get_remote_packet_size ();
4789 /* If we could generate a wider range of packets, we'd have to worry
4790 about overflowing BUF. Should there be a generic
4791 "multi-part-packet" packet? */
4793 p
+= xsnprintf (p
, endp
- p
, "vCont");
4795 if (ptid_equal (ptid
, magic_null_ptid
))
4797 /* MAGIC_NULL_PTID means that we don't have any active threads,
4798 so we don't have any TID numbers the inferior will
4799 understand. Make sure to only send forms that do not specify
4801 append_resumption (p
, endp
, minus_one_ptid
, step
, siggnal
);
4803 else if (ptid_equal (ptid
, minus_one_ptid
) || ptid_is_pid (ptid
))
4805 /* Resume all threads (of all processes, or of a single
4806 process), with preference for INFERIOR_PTID. This assumes
4807 inferior_ptid belongs to the set of all threads we are about
4809 if (step
|| siggnal
!= GDB_SIGNAL_0
)
4811 /* Step inferior_ptid, with or without signal. */
4812 p
= append_resumption (p
, endp
, inferior_ptid
, step
, siggnal
);
4815 /* Also pass down any pending signaled resumption for other
4816 threads not the current. */
4817 p
= append_pending_thread_resumptions (p
, endp
, ptid
);
4819 /* And continue others without a signal. */
4820 append_resumption (p
, endp
, ptid
, /*step=*/ 0, GDB_SIGNAL_0
);
4824 /* Scheduler locking; resume only PTID. */
4825 append_resumption (p
, endp
, ptid
, step
, siggnal
);
4828 gdb_assert (strlen (rs
->buf
) < get_remote_packet_size ());
4833 /* In non-stop, the stub replies to vCont with "OK". The stop
4834 reply will be reported asynchronously by means of a `%Stop'
4836 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4837 if (strcmp (rs
->buf
, "OK") != 0)
4838 error (_("Unexpected vCont reply in non-stop mode: %s"), rs
->buf
);
4844 /* Tell the remote machine to resume. */
4847 remote_resume (struct target_ops
*ops
,
4848 ptid_t ptid
, int step
, enum gdb_signal siggnal
)
4850 struct remote_state
*rs
= get_remote_state ();
4853 /* In all-stop, we can't mark REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN
4854 (explained in remote-notif.c:handle_notification) so
4855 remote_notif_process is not called. We need find a place where
4856 it is safe to start a 'vNotif' sequence. It is good to do it
4857 before resuming inferior, because inferior was stopped and no RSP
4858 traffic at that moment. */
4860 remote_notif_process (rs
->notif_state
, ¬if_client_stop
);
4862 rs
->last_sent_signal
= siggnal
;
4863 rs
->last_sent_step
= step
;
4865 /* The vCont packet doesn't need to specify threads via Hc. */
4866 /* No reverse support (yet) for vCont. */
4867 if (execution_direction
!= EXEC_REVERSE
)
4868 if (remote_vcont_resume (ptid
, step
, siggnal
))
4871 /* All other supported resume packets do use Hc, so set the continue
4873 if (ptid_equal (ptid
, minus_one_ptid
))
4874 set_continue_thread (any_thread_ptid
);
4876 set_continue_thread (ptid
);
4879 if (execution_direction
== EXEC_REVERSE
)
4881 /* We don't pass signals to the target in reverse exec mode. */
4882 if (info_verbose
&& siggnal
!= GDB_SIGNAL_0
)
4883 warning (_(" - Can't pass signal %d to target in reverse: ignored."),
4887 && remote_protocol_packets
[PACKET_bs
].support
== PACKET_DISABLE
)
4888 error (_("Remote reverse-step not supported."));
4890 && remote_protocol_packets
[PACKET_bc
].support
== PACKET_DISABLE
)
4891 error (_("Remote reverse-continue not supported."));
4893 strcpy (buf
, step
? "bs" : "bc");
4895 else if (siggnal
!= GDB_SIGNAL_0
)
4897 buf
[0] = step
? 'S' : 'C';
4898 buf
[1] = tohex (((int) siggnal
>> 4) & 0xf);
4899 buf
[2] = tohex (((int) siggnal
) & 0xf);
4903 strcpy (buf
, step
? "s" : "c");
4908 /* We are about to start executing the inferior, let's register it
4909 with the event loop. NOTE: this is the one place where all the
4910 execution commands end up. We could alternatively do this in each
4911 of the execution commands in infcmd.c. */
4912 /* FIXME: ezannoni 1999-09-28: We may need to move this out of here
4913 into infcmd.c in order to allow inferior function calls to work
4914 NOT asynchronously. */
4915 if (target_can_async_p ())
4916 target_async (inferior_event_handler
, 0);
4918 /* We've just told the target to resume. The remote server will
4919 wait for the inferior to stop, and then send a stop reply. In
4920 the mean time, we can't start another command/query ourselves
4921 because the stub wouldn't be ready to process it. This applies
4922 only to the base all-stop protocol, however. In non-stop (which
4923 only supports vCont), the stub replies with an "OK", and is
4924 immediate able to process further serial input. */
4926 rs
->waiting_for_stop_reply
= 1;
4930 /* Set up the signal handler for SIGINT, while the target is
4931 executing, ovewriting the 'regular' SIGINT signal handler. */
4933 async_initialize_sigint_signal_handler (void)
4935 signal (SIGINT
, async_handle_remote_sigint
);
4938 /* Signal handler for SIGINT, while the target is executing. */
4940 async_handle_remote_sigint (int sig
)
4942 signal (sig
, async_handle_remote_sigint_twice
);
4943 mark_async_signal_handler (async_sigint_remote_token
);
4946 /* Signal handler for SIGINT, installed after SIGINT has already been
4947 sent once. It will take effect the second time that the user sends
4950 async_handle_remote_sigint_twice (int sig
)
4952 signal (sig
, async_handle_remote_sigint
);
4953 mark_async_signal_handler (async_sigint_remote_twice_token
);
4956 /* Perform the real interruption of the target execution, in response
4959 async_remote_interrupt (gdb_client_data arg
)
4962 fprintf_unfiltered (gdb_stdlog
, "async_remote_interrupt called\n");
4964 target_stop (inferior_ptid
);
4967 /* Perform interrupt, if the first attempt did not succeed. Just give
4968 up on the target alltogether. */
4970 async_remote_interrupt_twice (gdb_client_data arg
)
4973 fprintf_unfiltered (gdb_stdlog
, "async_remote_interrupt_twice called\n");
4978 /* Reinstall the usual SIGINT handlers, after the target has
4981 async_cleanup_sigint_signal_handler (void *dummy
)
4983 signal (SIGINT
, handle_sigint
);
4986 /* Send ^C to target to halt it. Target will respond, and send us a
4988 static void (*ofunc
) (int);
4990 /* The command line interface's stop routine. This function is installed
4991 as a signal handler for SIGINT. The first time a user requests a
4992 stop, we call remote_stop to send a break or ^C. If there is no
4993 response from the target (it didn't stop when the user requested it),
4994 we ask the user if he'd like to detach from the target. */
4996 sync_remote_interrupt (int signo
)
4998 /* If this doesn't work, try more severe steps. */
4999 signal (signo
, sync_remote_interrupt_twice
);
5001 gdb_call_async_signal_handler (async_sigint_remote_token
, 1);
5004 /* The user typed ^C twice. */
5007 sync_remote_interrupt_twice (int signo
)
5009 signal (signo
, ofunc
);
5010 gdb_call_async_signal_handler (async_sigint_remote_twice_token
, 1);
5011 signal (signo
, sync_remote_interrupt
);
5014 /* Non-stop version of target_stop. Uses `vCont;t' to stop a remote
5015 thread, all threads of a remote process, or all threads of all
5019 remote_stop_ns (ptid_t ptid
)
5021 struct remote_state
*rs
= get_remote_state ();
5023 char *endp
= rs
->buf
+ get_remote_packet_size ();
5025 if (remote_protocol_packets
[PACKET_vCont
].support
== PACKET_SUPPORT_UNKNOWN
)
5026 remote_vcont_probe (rs
);
5028 if (!rs
->supports_vCont
.t
)
5029 error (_("Remote server does not support stopping threads"));
5031 if (ptid_equal (ptid
, minus_one_ptid
)
5032 || (!remote_multi_process_p (rs
) && ptid_is_pid (ptid
)))
5033 p
+= xsnprintf (p
, endp
- p
, "vCont;t");
5038 p
+= xsnprintf (p
, endp
- p
, "vCont;t:");
5040 if (ptid_is_pid (ptid
))
5041 /* All (-1) threads of process. */
5042 nptid
= ptid_build (ptid_get_pid (ptid
), 0, -1);
5045 /* Small optimization: if we already have a stop reply for
5046 this thread, no use in telling the stub we want this
5048 if (peek_stop_reply (ptid
))
5054 write_ptid (p
, endp
, nptid
);
5057 /* In non-stop, we get an immediate OK reply. The stop reply will
5058 come in asynchronously by notification. */
5060 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5061 if (strcmp (rs
->buf
, "OK") != 0)
5062 error (_("Stopping %s failed: %s"), target_pid_to_str (ptid
), rs
->buf
);
5065 /* All-stop version of target_stop. Sends a break or a ^C to stop the
5066 remote target. It is undefined which thread of which process
5067 reports the stop. */
5070 remote_stop_as (ptid_t ptid
)
5072 struct remote_state
*rs
= get_remote_state ();
5074 rs
->ctrlc_pending_p
= 1;
5076 /* If the inferior is stopped already, but the core didn't know
5077 about it yet, just ignore the request. The cached wait status
5078 will be collected in remote_wait. */
5079 if (rs
->cached_wait_status
)
5082 /* Send interrupt_sequence to remote target. */
5083 send_interrupt_sequence ();
5086 /* This is the generic stop called via the target vector. When a target
5087 interrupt is requested, either by the command line or the GUI, we
5088 will eventually end up here. */
5091 remote_stop (struct target_ops
*self
, ptid_t ptid
)
5094 fprintf_unfiltered (gdb_stdlog
, "remote_stop called\n");
5097 remote_stop_ns (ptid
);
5099 remote_stop_as (ptid
);
5102 /* Ask the user what to do when an interrupt is received. */
5105 interrupt_query (void)
5107 target_terminal_ours ();
5109 if (target_can_async_p ())
5111 signal (SIGINT
, handle_sigint
);
5116 if (query (_("Interrupted while waiting for the program.\n\
5117 Give up (and stop debugging it)? ")))
5119 remote_unpush_target ();
5124 target_terminal_inferior ();
5127 /* Enable/disable target terminal ownership. Most targets can use
5128 terminal groups to control terminal ownership. Remote targets are
5129 different in that explicit transfer of ownership to/from GDB/target
5133 remote_terminal_inferior (struct target_ops
*self
)
5135 if (!target_async_permitted
)
5136 /* Nothing to do. */
5139 /* FIXME: cagney/1999-09-27: Make calls to target_terminal_*()
5140 idempotent. The event-loop GDB talking to an asynchronous target
5141 with a synchronous command calls this function from both
5142 event-top.c and infrun.c/infcmd.c. Once GDB stops trying to
5143 transfer the terminal to the target when it shouldn't this guard
5145 if (!remote_async_terminal_ours_p
)
5147 delete_file_handler (input_fd
);
5148 remote_async_terminal_ours_p
= 0;
5149 async_initialize_sigint_signal_handler ();
5150 /* NOTE: At this point we could also register our selves as the
5151 recipient of all input. Any characters typed could then be
5152 passed on down to the target. */
5156 remote_terminal_ours (struct target_ops
*self
)
5158 if (!target_async_permitted
)
5159 /* Nothing to do. */
5162 /* See FIXME in remote_terminal_inferior. */
5163 if (remote_async_terminal_ours_p
)
5165 async_cleanup_sigint_signal_handler (NULL
);
5166 add_file_handler (input_fd
, stdin_event_handler
, 0);
5167 remote_async_terminal_ours_p
= 1;
5171 remote_console_output (char *msg
)
5175 for (p
= msg
; p
[0] && p
[1]; p
+= 2)
5178 char c
= fromhex (p
[0]) * 16 + fromhex (p
[1]);
5182 fputs_unfiltered (tb
, gdb_stdtarg
);
5184 gdb_flush (gdb_stdtarg
);
5187 typedef struct cached_reg
5190 gdb_byte data
[MAX_REGISTER_SIZE
];
5193 DEF_VEC_O(cached_reg_t
);
5195 typedef struct stop_reply
5197 struct notif_event base
;
5199 /* The identifier of the thread about this event */
5202 /* The remote state this event is associated with. When the remote
5203 connection, represented by a remote_state object, is closed,
5204 all the associated stop_reply events should be released. */
5205 struct remote_state
*rs
;
5207 struct target_waitstatus ws
;
5209 /* Expedited registers. This makes remote debugging a bit more
5210 efficient for those targets that provide critical registers as
5211 part of their normal status mechanism (as another roundtrip to
5212 fetch them is avoided). */
5213 VEC(cached_reg_t
) *regcache
;
5215 int stopped_by_watchpoint_p
;
5216 CORE_ADDR watch_data_address
;
5221 DECLARE_QUEUE_P (stop_reply_p
);
5222 DEFINE_QUEUE_P (stop_reply_p
);
5223 /* The list of already fetched and acknowledged stop events. This
5224 queue is used for notification Stop, and other notifications
5225 don't need queue for their events, because the notification events
5226 of Stop can't be consumed immediately, so that events should be
5227 queued first, and be consumed by remote_wait_{ns,as} one per
5228 time. Other notifications can consume their events immediately,
5229 so queue is not needed for them. */
5230 static QUEUE (stop_reply_p
) *stop_reply_queue
;
5233 stop_reply_xfree (struct stop_reply
*r
)
5235 notif_event_xfree ((struct notif_event
*) r
);
5239 remote_notif_stop_parse (struct notif_client
*self
, char *buf
,
5240 struct notif_event
*event
)
5242 remote_parse_stop_reply (buf
, (struct stop_reply
*) event
);
5246 remote_notif_stop_ack (struct notif_client
*self
, char *buf
,
5247 struct notif_event
*event
)
5249 struct stop_reply
*stop_reply
= (struct stop_reply
*) event
;
5252 putpkt ((char *) self
->ack_command
);
5254 if (stop_reply
->ws
.kind
== TARGET_WAITKIND_IGNORE
)
5255 /* We got an unknown stop reply. */
5256 error (_("Unknown stop reply"));
5258 push_stop_reply (stop_reply
);
5262 remote_notif_stop_can_get_pending_events (struct notif_client
*self
)
5264 /* We can't get pending events in remote_notif_process for
5265 notification stop, and we have to do this in remote_wait_ns
5266 instead. If we fetch all queued events from stub, remote stub
5267 may exit and we have no chance to process them back in
5269 mark_async_event_handler (remote_async_inferior_event_token
);
5274 stop_reply_dtr (struct notif_event
*event
)
5276 struct stop_reply
*r
= (struct stop_reply
*) event
;
5278 VEC_free (cached_reg_t
, r
->regcache
);
5281 static struct notif_event
*
5282 remote_notif_stop_alloc_reply (void)
5284 struct notif_event
*r
5285 = (struct notif_event
*) XNEW (struct stop_reply
);
5287 r
->dtr
= stop_reply_dtr
;
5292 /* A client of notification Stop. */
5294 struct notif_client notif_client_stop
=
5298 remote_notif_stop_parse
,
5299 remote_notif_stop_ack
,
5300 remote_notif_stop_can_get_pending_events
,
5301 remote_notif_stop_alloc_reply
,
5305 /* A parameter to pass data in and out. */
5307 struct queue_iter_param
5310 struct stop_reply
*output
;
5313 /* Remove stop replies in the queue if its pid is equal to the given
5317 remove_stop_reply_for_inferior (QUEUE (stop_reply_p
) *q
,
5318 QUEUE_ITER (stop_reply_p
) *iter
,
5322 struct queue_iter_param
*param
= data
;
5323 struct inferior
*inf
= param
->input
;
5325 if (ptid_get_pid (event
->ptid
) == inf
->pid
)
5327 stop_reply_xfree (event
);
5328 QUEUE_remove_elem (stop_reply_p
, q
, iter
);
5334 /* Discard all pending stop replies of inferior INF. */
5337 discard_pending_stop_replies (struct inferior
*inf
)
5340 struct queue_iter_param param
;
5341 struct stop_reply
*reply
;
5342 struct remote_state
*rs
= get_remote_state ();
5343 struct remote_notif_state
*rns
= rs
->notif_state
;
5345 /* This function can be notified when an inferior exists. When the
5346 target is not remote, the notification state is NULL. */
5347 if (rs
->remote_desc
== NULL
)
5350 reply
= (struct stop_reply
*) rns
->pending_event
[notif_client_stop
.id
];
5352 /* Discard the in-flight notification. */
5353 if (reply
!= NULL
&& ptid_get_pid (reply
->ptid
) == inf
->pid
)
5355 stop_reply_xfree (reply
);
5356 rns
->pending_event
[notif_client_stop
.id
] = NULL
;
5360 param
.output
= NULL
;
5361 /* Discard the stop replies we have already pulled with
5363 QUEUE_iterate (stop_reply_p
, stop_reply_queue
,
5364 remove_stop_reply_for_inferior
, ¶m
);
5367 /* If its remote state is equal to the given remote state,
5368 remove EVENT from the stop reply queue. */
5371 remove_stop_reply_of_remote_state (QUEUE (stop_reply_p
) *q
,
5372 QUEUE_ITER (stop_reply_p
) *iter
,
5376 struct queue_iter_param
*param
= data
;
5377 struct remote_state
*rs
= param
->input
;
5379 if (event
->rs
== rs
)
5381 stop_reply_xfree (event
);
5382 QUEUE_remove_elem (stop_reply_p
, q
, iter
);
5388 /* Discard the stop replies for RS in stop_reply_queue. */
5391 discard_pending_stop_replies_in_queue (struct remote_state
*rs
)
5393 struct queue_iter_param param
;
5396 param
.output
= NULL
;
5397 /* Discard the stop replies we have already pulled with
5399 QUEUE_iterate (stop_reply_p
, stop_reply_queue
,
5400 remove_stop_reply_of_remote_state
, ¶m
);
5403 /* A parameter to pass data in and out. */
5406 remote_notif_remove_once_on_match (QUEUE (stop_reply_p
) *q
,
5407 QUEUE_ITER (stop_reply_p
) *iter
,
5411 struct queue_iter_param
*param
= data
;
5412 ptid_t
*ptid
= param
->input
;
5414 if (ptid_match (event
->ptid
, *ptid
))
5416 param
->output
= event
;
5417 QUEUE_remove_elem (stop_reply_p
, q
, iter
);
5424 /* Remove the first reply in 'stop_reply_queue' which matches
5427 static struct stop_reply
*
5428 remote_notif_remove_queued_reply (ptid_t ptid
)
5430 struct queue_iter_param param
;
5432 param
.input
= &ptid
;
5433 param
.output
= NULL
;
5435 QUEUE_iterate (stop_reply_p
, stop_reply_queue
,
5436 remote_notif_remove_once_on_match
, ¶m
);
5438 fprintf_unfiltered (gdb_stdlog
,
5439 "notif: discard queued event: 'Stop' in %s\n",
5440 target_pid_to_str (ptid
));
5442 return param
.output
;
5445 /* Look for a queued stop reply belonging to PTID. If one is found,
5446 remove it from the queue, and return it. Returns NULL if none is
5447 found. If there are still queued events left to process, tell the
5448 event loop to get back to target_wait soon. */
5450 static struct stop_reply
*
5451 queued_stop_reply (ptid_t ptid
)
5453 struct stop_reply
*r
= remote_notif_remove_queued_reply (ptid
);
5455 if (!QUEUE_is_empty (stop_reply_p
, stop_reply_queue
))
5456 /* There's still at least an event left. */
5457 mark_async_event_handler (remote_async_inferior_event_token
);
5462 /* Push a fully parsed stop reply in the stop reply queue. Since we
5463 know that we now have at least one queued event left to pass to the
5464 core side, tell the event loop to get back to target_wait soon. */
5467 push_stop_reply (struct stop_reply
*new_event
)
5469 QUEUE_enque (stop_reply_p
, stop_reply_queue
, new_event
);
5472 fprintf_unfiltered (gdb_stdlog
,
5473 "notif: push 'Stop' %s to queue %d\n",
5474 target_pid_to_str (new_event
->ptid
),
5475 QUEUE_length (stop_reply_p
,
5478 mark_async_event_handler (remote_async_inferior_event_token
);
5482 stop_reply_match_ptid_and_ws (QUEUE (stop_reply_p
) *q
,
5483 QUEUE_ITER (stop_reply_p
) *iter
,
5484 struct stop_reply
*event
,
5487 ptid_t
*ptid
= data
;
5489 return !(ptid_equal (*ptid
, event
->ptid
)
5490 && event
->ws
.kind
== TARGET_WAITKIND_STOPPED
);
5493 /* Returns true if we have a stop reply for PTID. */
5496 peek_stop_reply (ptid_t ptid
)
5498 return !QUEUE_iterate (stop_reply_p
, stop_reply_queue
,
5499 stop_reply_match_ptid_and_ws
, &ptid
);
5502 /* Parse the stop reply in BUF. Either the function succeeds, and the
5503 result is stored in EVENT, or throws an error. */
5506 remote_parse_stop_reply (char *buf
, struct stop_reply
*event
)
5508 struct remote_arch_state
*rsa
= get_remote_arch_state ();
5512 event
->ptid
= null_ptid
;
5513 event
->rs
= get_remote_state ();
5514 event
->ws
.kind
= TARGET_WAITKIND_IGNORE
;
5515 event
->ws
.value
.integer
= 0;
5516 event
->stopped_by_watchpoint_p
= 0;
5517 event
->regcache
= NULL
;
5522 case 'T': /* Status with PC, SP, FP, ... */
5523 /* Expedited reply, containing Signal, {regno, reg} repeat. */
5524 /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where
5526 n... = register number
5527 r... = register contents
5530 p
= &buf
[3]; /* after Txx */
5538 /* If the packet contains a register number, save it in
5539 pnum and set p1 to point to the character following it.
5540 Otherwise p1 points to p. */
5542 /* If this packet is an awatch packet, don't parse the 'a'
5543 as a register number. */
5545 if (strncmp (p
, "awatch", strlen("awatch")) != 0
5546 && strncmp (p
, "core", strlen ("core") != 0))
5548 /* Read the ``P'' register number. */
5549 pnum
= strtol (p
, &p_temp
, 16);
5555 if (p1
== p
) /* No register number present here. */
5557 p1
= strchr (p
, ':');
5559 error (_("Malformed packet(a) (missing colon): %s\n\
5562 if (strncmp (p
, "thread", p1
- p
) == 0)
5563 event
->ptid
= read_ptid (++p1
, &p
);
5564 else if ((strncmp (p
, "watch", p1
- p
) == 0)
5565 || (strncmp (p
, "rwatch", p1
- p
) == 0)
5566 || (strncmp (p
, "awatch", p1
- p
) == 0))
5568 event
->stopped_by_watchpoint_p
= 1;
5569 p
= unpack_varlen_hex (++p1
, &addr
);
5570 event
->watch_data_address
= (CORE_ADDR
) addr
;
5572 else if (strncmp (p
, "library", p1
- p
) == 0)
5576 while (*p_temp
&& *p_temp
!= ';')
5579 event
->ws
.kind
= TARGET_WAITKIND_LOADED
;
5582 else if (strncmp (p
, "replaylog", p1
- p
) == 0)
5584 event
->ws
.kind
= TARGET_WAITKIND_NO_HISTORY
;
5585 /* p1 will indicate "begin" or "end", but it makes
5586 no difference for now, so ignore it. */
5587 p_temp
= strchr (p1
+ 1, ';');
5591 else if (strncmp (p
, "core", p1
- p
) == 0)
5595 p
= unpack_varlen_hex (++p1
, &c
);
5600 /* Silently skip unknown optional info. */
5601 p_temp
= strchr (p1
+ 1, ';');
5608 struct packet_reg
*reg
= packet_reg_from_pnum (rsa
, pnum
);
5609 cached_reg_t cached_reg
;
5614 error (_("Malformed packet(b) (missing colon): %s\n\
5620 error (_("Remote sent bad register number %s: %s\n\
5622 hex_string (pnum
), p
, buf
);
5624 cached_reg
.num
= reg
->regnum
;
5626 fieldsize
= hex2bin (p
, cached_reg
.data
,
5627 register_size (target_gdbarch (),
5630 if (fieldsize
< register_size (target_gdbarch (),
5632 warning (_("Remote reply is too short: %s"), buf
);
5634 VEC_safe_push (cached_reg_t
, event
->regcache
, &cached_reg
);
5638 error (_("Remote register badly formatted: %s\nhere: %s"),
5643 if (event
->ws
.kind
!= TARGET_WAITKIND_IGNORE
)
5647 case 'S': /* Old style status, just signal only. */
5651 event
->ws
.kind
= TARGET_WAITKIND_STOPPED
;
5652 sig
= (fromhex (buf
[1]) << 4) + fromhex (buf
[2]);
5653 if (GDB_SIGNAL_FIRST
<= sig
&& sig
< GDB_SIGNAL_LAST
)
5654 event
->ws
.value
.sig
= (enum gdb_signal
) sig
;
5656 event
->ws
.value
.sig
= GDB_SIGNAL_UNKNOWN
;
5659 case 'W': /* Target exited. */
5666 /* GDB used to accept only 2 hex chars here. Stubs should
5667 only send more if they detect GDB supports multi-process
5669 p
= unpack_varlen_hex (&buf
[1], &value
);
5673 /* The remote process exited. */
5674 event
->ws
.kind
= TARGET_WAITKIND_EXITED
;
5675 event
->ws
.value
.integer
= value
;
5679 /* The remote process exited with a signal. */
5680 event
->ws
.kind
= TARGET_WAITKIND_SIGNALLED
;
5681 if (GDB_SIGNAL_FIRST
<= value
&& value
< GDB_SIGNAL_LAST
)
5682 event
->ws
.value
.sig
= (enum gdb_signal
) value
;
5684 event
->ws
.value
.sig
= GDB_SIGNAL_UNKNOWN
;
5687 /* If no process is specified, assume inferior_ptid. */
5688 pid
= ptid_get_pid (inferior_ptid
);
5697 else if (strncmp (p
,
5698 "process:", sizeof ("process:") - 1) == 0)
5702 p
+= sizeof ("process:") - 1;
5703 unpack_varlen_hex (p
, &upid
);
5707 error (_("unknown stop reply packet: %s"), buf
);
5710 error (_("unknown stop reply packet: %s"), buf
);
5711 event
->ptid
= pid_to_ptid (pid
);
5716 if (non_stop
&& ptid_equal (event
->ptid
, null_ptid
))
5717 error (_("No process or thread specified in stop reply: %s"), buf
);
5720 /* When the stub wants to tell GDB about a new notification reply, it
5721 sends a notification (%Stop, for example). Those can come it at
5722 any time, hence, we have to make sure that any pending
5723 putpkt/getpkt sequence we're making is finished, before querying
5724 the stub for more events with the corresponding ack command
5725 (vStopped, for example). E.g., if we started a vStopped sequence
5726 immediately upon receiving the notification, something like this
5734 1.6) <-- (registers reply to step #1.3)
5736 Obviously, the reply in step #1.6 would be unexpected to a vStopped
5739 To solve this, whenever we parse a %Stop notification successfully,
5740 we mark the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN, and carry on
5741 doing whatever we were doing:
5747 <GDB marks the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN>
5748 2.5) <-- (registers reply to step #2.3)
5750 Eventualy after step #2.5, we return to the event loop, which
5751 notices there's an event on the
5752 REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN event and calls the
5753 associated callback --- the function below. At this point, we're
5754 always safe to start a vStopped sequence. :
5757 2.7) <-- T05 thread:2
5763 remote_notif_get_pending_events (struct notif_client
*nc
)
5765 struct remote_state
*rs
= get_remote_state ();
5767 if (rs
->notif_state
->pending_event
[nc
->id
] != NULL
)
5770 fprintf_unfiltered (gdb_stdlog
,
5771 "notif: process: '%s' ack pending event\n",
5775 nc
->ack (nc
, rs
->buf
, rs
->notif_state
->pending_event
[nc
->id
]);
5776 rs
->notif_state
->pending_event
[nc
->id
] = NULL
;
5780 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5781 if (strcmp (rs
->buf
, "OK") == 0)
5784 remote_notif_ack (nc
, rs
->buf
);
5790 fprintf_unfiltered (gdb_stdlog
,
5791 "notif: process: '%s' no pending reply\n",
5796 /* Called when it is decided that STOP_REPLY holds the info of the
5797 event that is to be returned to the core. This function always
5798 destroys STOP_REPLY. */
5801 process_stop_reply (struct stop_reply
*stop_reply
,
5802 struct target_waitstatus
*status
)
5806 *status
= stop_reply
->ws
;
5807 ptid
= stop_reply
->ptid
;
5809 /* If no thread/process was reported by the stub, assume the current
5811 if (ptid_equal (ptid
, null_ptid
))
5812 ptid
= inferior_ptid
;
5814 if (status
->kind
!= TARGET_WAITKIND_EXITED
5815 && status
->kind
!= TARGET_WAITKIND_SIGNALLED
)
5817 struct remote_state
*rs
= get_remote_state ();
5819 /* Expedited registers. */
5820 if (stop_reply
->regcache
)
5822 struct regcache
*regcache
5823 = get_thread_arch_regcache (ptid
, target_gdbarch ());
5828 VEC_iterate(cached_reg_t
, stop_reply
->regcache
, ix
, reg
);
5830 regcache_raw_supply (regcache
, reg
->num
, reg
->data
);
5831 VEC_free (cached_reg_t
, stop_reply
->regcache
);
5834 rs
->remote_stopped_by_watchpoint_p
= stop_reply
->stopped_by_watchpoint_p
;
5835 rs
->remote_watch_data_address
= stop_reply
->watch_data_address
;
5837 remote_notice_new_inferior (ptid
, 0);
5838 demand_private_info (ptid
)->core
= stop_reply
->core
;
5841 stop_reply_xfree (stop_reply
);
5845 /* The non-stop mode version of target_wait. */
5848 remote_wait_ns (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
5850 struct remote_state
*rs
= get_remote_state ();
5851 struct stop_reply
*stop_reply
;
5855 /* If in non-stop mode, get out of getpkt even if a
5856 notification is received. */
5858 ret
= getpkt_or_notif_sane (&rs
->buf
, &rs
->buf_size
,
5859 0 /* forever */, &is_notif
);
5862 if (ret
!= -1 && !is_notif
)
5865 case 'E': /* Error of some sort. */
5866 /* We're out of sync with the target now. Did it continue
5867 or not? We can't tell which thread it was in non-stop,
5868 so just ignore this. */
5869 warning (_("Remote failure reply: %s"), rs
->buf
);
5871 case 'O': /* Console output. */
5872 remote_console_output (rs
->buf
+ 1);
5875 warning (_("Invalid remote reply: %s"), rs
->buf
);
5879 /* Acknowledge a pending stop reply that may have arrived in the
5881 if (rs
->notif_state
->pending_event
[notif_client_stop
.id
] != NULL
)
5882 remote_notif_get_pending_events (¬if_client_stop
);
5884 /* If indeed we noticed a stop reply, we're done. */
5885 stop_reply
= queued_stop_reply (ptid
);
5886 if (stop_reply
!= NULL
)
5887 return process_stop_reply (stop_reply
, status
);
5889 /* Still no event. If we're just polling for an event, then
5890 return to the event loop. */
5891 if (options
& TARGET_WNOHANG
)
5893 status
->kind
= TARGET_WAITKIND_IGNORE
;
5894 return minus_one_ptid
;
5897 /* Otherwise do a blocking wait. */
5898 ret
= getpkt_or_notif_sane (&rs
->buf
, &rs
->buf_size
,
5899 1 /* forever */, &is_notif
);
5903 /* Wait until the remote machine stops, then return, storing status in
5904 STATUS just as `wait' would. */
5907 remote_wait_as (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
5909 struct remote_state
*rs
= get_remote_state ();
5910 ptid_t event_ptid
= null_ptid
;
5912 struct stop_reply
*stop_reply
;
5916 status
->kind
= TARGET_WAITKIND_IGNORE
;
5917 status
->value
.integer
= 0;
5919 stop_reply
= queued_stop_reply (ptid
);
5920 if (stop_reply
!= NULL
)
5921 return process_stop_reply (stop_reply
, status
);
5923 if (rs
->cached_wait_status
)
5924 /* Use the cached wait status, but only once. */
5925 rs
->cached_wait_status
= 0;
5931 if (!target_is_async_p ())
5933 ofunc
= signal (SIGINT
, sync_remote_interrupt
);
5934 /* If the user hit C-c before this packet, or between packets,
5935 pretend that it was hit right here. */
5936 if (check_quit_flag ())
5939 sync_remote_interrupt (SIGINT
);
5943 /* FIXME: cagney/1999-09-27: If we're in async mode we should
5944 _never_ wait for ever -> test on target_is_async_p().
5945 However, before we do that we need to ensure that the caller
5946 knows how to take the target into/out of async mode. */
5947 ret
= getpkt_or_notif_sane (&rs
->buf
, &rs
->buf_size
,
5948 wait_forever_enabled_p
, &is_notif
);
5950 if (!target_is_async_p ())
5951 signal (SIGINT
, ofunc
);
5953 /* GDB gets a notification. Return to core as this event is
5955 if (ret
!= -1 && is_notif
)
5956 return minus_one_ptid
;
5961 rs
->remote_stopped_by_watchpoint_p
= 0;
5963 /* We got something. */
5964 rs
->waiting_for_stop_reply
= 0;
5966 /* Assume that the target has acknowledged Ctrl-C unless we receive
5967 an 'F' or 'O' packet. */
5968 if (buf
[0] != 'F' && buf
[0] != 'O')
5969 rs
->ctrlc_pending_p
= 0;
5973 case 'E': /* Error of some sort. */
5974 /* We're out of sync with the target now. Did it continue or
5975 not? Not is more likely, so report a stop. */
5976 warning (_("Remote failure reply: %s"), buf
);
5977 status
->kind
= TARGET_WAITKIND_STOPPED
;
5978 status
->value
.sig
= GDB_SIGNAL_0
;
5980 case 'F': /* File-I/O request. */
5981 remote_fileio_request (buf
, rs
->ctrlc_pending_p
);
5982 rs
->ctrlc_pending_p
= 0;
5984 case 'T': case 'S': case 'X': case 'W':
5986 struct stop_reply
*stop_reply
5987 = (struct stop_reply
*) remote_notif_parse (¬if_client_stop
,
5990 event_ptid
= process_stop_reply (stop_reply
, status
);
5993 case 'O': /* Console output. */
5994 remote_console_output (buf
+ 1);
5996 /* The target didn't really stop; keep waiting. */
5997 rs
->waiting_for_stop_reply
= 1;
6001 if (rs
->last_sent_signal
!= GDB_SIGNAL_0
)
6003 /* Zero length reply means that we tried 'S' or 'C' and the
6004 remote system doesn't support it. */
6005 target_terminal_ours_for_output ();
6007 ("Can't send signals to this remote system. %s not sent.\n",
6008 gdb_signal_to_name (rs
->last_sent_signal
));
6009 rs
->last_sent_signal
= GDB_SIGNAL_0
;
6010 target_terminal_inferior ();
6012 strcpy ((char *) buf
, rs
->last_sent_step
? "s" : "c");
6013 putpkt ((char *) buf
);
6015 /* We just told the target to resume, so a stop reply is in
6017 rs
->waiting_for_stop_reply
= 1;
6020 /* else fallthrough */
6022 warning (_("Invalid remote reply: %s"), buf
);
6024 rs
->waiting_for_stop_reply
= 1;
6028 if (status
->kind
== TARGET_WAITKIND_IGNORE
)
6030 /* Nothing interesting happened. If we're doing a non-blocking
6031 poll, we're done. Otherwise, go back to waiting. */
6032 if (options
& TARGET_WNOHANG
)
6033 return minus_one_ptid
;
6037 else if (status
->kind
!= TARGET_WAITKIND_EXITED
6038 && status
->kind
!= TARGET_WAITKIND_SIGNALLED
)
6040 if (!ptid_equal (event_ptid
, null_ptid
))
6041 record_currthread (rs
, event_ptid
);
6043 event_ptid
= inferior_ptid
;
6046 /* A process exit. Invalidate our notion of current thread. */
6047 record_currthread (rs
, minus_one_ptid
);
6052 /* Wait until the remote machine stops, then return, storing status in
6053 STATUS just as `wait' would. */
6056 remote_wait (struct target_ops
*ops
,
6057 ptid_t ptid
, struct target_waitstatus
*status
, int options
)
6062 event_ptid
= remote_wait_ns (ptid
, status
, options
);
6064 event_ptid
= remote_wait_as (ptid
, status
, options
);
6066 if (target_can_async_p ())
6068 /* If there are are events left in the queue tell the event loop
6070 if (!QUEUE_is_empty (stop_reply_p
, stop_reply_queue
))
6071 mark_async_event_handler (remote_async_inferior_event_token
);
6077 /* Fetch a single register using a 'p' packet. */
6080 fetch_register_using_p (struct regcache
*regcache
, struct packet_reg
*reg
)
6082 struct remote_state
*rs
= get_remote_state ();
6084 char regp
[MAX_REGISTER_SIZE
];
6087 if (remote_protocol_packets
[PACKET_p
].support
== PACKET_DISABLE
)
6090 if (reg
->pnum
== -1)
6095 p
+= hexnumstr (p
, reg
->pnum
);
6098 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6102 switch (packet_ok (buf
, &remote_protocol_packets
[PACKET_p
]))
6106 case PACKET_UNKNOWN
:
6109 error (_("Could not fetch register \"%s\"; remote failure reply '%s'"),
6110 gdbarch_register_name (get_regcache_arch (regcache
),
6115 /* If this register is unfetchable, tell the regcache. */
6118 regcache_raw_supply (regcache
, reg
->regnum
, NULL
);
6122 /* Otherwise, parse and supply the value. */
6128 error (_("fetch_register_using_p: early buf termination"));
6130 regp
[i
++] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
6133 regcache_raw_supply (regcache
, reg
->regnum
, regp
);
6137 /* Fetch the registers included in the target's 'g' packet. */
6140 send_g_packet (void)
6142 struct remote_state
*rs
= get_remote_state ();
6145 xsnprintf (rs
->buf
, get_remote_packet_size (), "g");
6146 remote_send (&rs
->buf
, &rs
->buf_size
);
6148 /* We can get out of synch in various cases. If the first character
6149 in the buffer is not a hex character, assume that has happened
6150 and try to fetch another packet to read. */
6151 while ((rs
->buf
[0] < '0' || rs
->buf
[0] > '9')
6152 && (rs
->buf
[0] < 'A' || rs
->buf
[0] > 'F')
6153 && (rs
->buf
[0] < 'a' || rs
->buf
[0] > 'f')
6154 && rs
->buf
[0] != 'x') /* New: unavailable register value. */
6157 fprintf_unfiltered (gdb_stdlog
,
6158 "Bad register packet; fetching a new packet\n");
6159 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6162 buf_len
= strlen (rs
->buf
);
6164 /* Sanity check the received packet. */
6165 if (buf_len
% 2 != 0)
6166 error (_("Remote 'g' packet reply is of odd length: %s"), rs
->buf
);
6172 process_g_packet (struct regcache
*regcache
)
6174 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
6175 struct remote_state
*rs
= get_remote_state ();
6176 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6181 buf_len
= strlen (rs
->buf
);
6183 /* Further sanity checks, with knowledge of the architecture. */
6184 if (buf_len
> 2 * rsa
->sizeof_g_packet
)
6185 error (_("Remote 'g' packet reply is too long: %s"), rs
->buf
);
6187 /* Save the size of the packet sent to us by the target. It is used
6188 as a heuristic when determining the max size of packets that the
6189 target can safely receive. */
6190 if (rsa
->actual_register_packet_size
== 0)
6191 rsa
->actual_register_packet_size
= buf_len
;
6193 /* If this is smaller than we guessed the 'g' packet would be,
6194 update our records. A 'g' reply that doesn't include a register's
6195 value implies either that the register is not available, or that
6196 the 'p' packet must be used. */
6197 if (buf_len
< 2 * rsa
->sizeof_g_packet
)
6199 rsa
->sizeof_g_packet
= buf_len
/ 2;
6201 for (i
= 0; i
< gdbarch_num_regs (gdbarch
); i
++)
6203 if (rsa
->regs
[i
].pnum
== -1)
6206 if (rsa
->regs
[i
].offset
>= rsa
->sizeof_g_packet
)
6207 rsa
->regs
[i
].in_g_packet
= 0;
6209 rsa
->regs
[i
].in_g_packet
= 1;
6213 regs
= alloca (rsa
->sizeof_g_packet
);
6215 /* Unimplemented registers read as all bits zero. */
6216 memset (regs
, 0, rsa
->sizeof_g_packet
);
6218 /* Reply describes registers byte by byte, each byte encoded as two
6219 hex characters. Suck them all up, then supply them to the
6220 register cacheing/storage mechanism. */
6223 for (i
= 0; i
< rsa
->sizeof_g_packet
; i
++)
6225 if (p
[0] == 0 || p
[1] == 0)
6226 /* This shouldn't happen - we adjusted sizeof_g_packet above. */
6227 internal_error (__FILE__
, __LINE__
,
6228 _("unexpected end of 'g' packet reply"));
6230 if (p
[0] == 'x' && p
[1] == 'x')
6231 regs
[i
] = 0; /* 'x' */
6233 regs
[i
] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
6237 for (i
= 0; i
< gdbarch_num_regs (gdbarch
); i
++)
6239 struct packet_reg
*r
= &rsa
->regs
[i
];
6243 if (r
->offset
* 2 >= strlen (rs
->buf
))
6244 /* This shouldn't happen - we adjusted in_g_packet above. */
6245 internal_error (__FILE__
, __LINE__
,
6246 _("unexpected end of 'g' packet reply"));
6247 else if (rs
->buf
[r
->offset
* 2] == 'x')
6249 gdb_assert (r
->offset
* 2 < strlen (rs
->buf
));
6250 /* The register isn't available, mark it as such (at
6251 the same time setting the value to zero). */
6252 regcache_raw_supply (regcache
, r
->regnum
, NULL
);
6255 regcache_raw_supply (regcache
, r
->regnum
,
6262 fetch_registers_using_g (struct regcache
*regcache
)
6265 process_g_packet (regcache
);
6268 /* Make the remote selected traceframe match GDB's selected
6272 set_remote_traceframe (void)
6275 struct remote_state
*rs
= get_remote_state ();
6277 if (rs
->remote_traceframe_number
== get_traceframe_number ())
6280 /* Avoid recursion, remote_trace_find calls us again. */
6281 rs
->remote_traceframe_number
= get_traceframe_number ();
6283 newnum
= target_trace_find (tfind_number
,
6284 get_traceframe_number (), 0, 0, NULL
);
6286 /* Should not happen. If it does, all bets are off. */
6287 if (newnum
!= get_traceframe_number ())
6288 warning (_("could not set remote traceframe"));
6292 remote_fetch_registers (struct target_ops
*ops
,
6293 struct regcache
*regcache
, int regnum
)
6295 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6298 set_remote_traceframe ();
6299 set_general_thread (inferior_ptid
);
6303 struct packet_reg
*reg
= packet_reg_from_regnum (rsa
, regnum
);
6305 gdb_assert (reg
!= NULL
);
6307 /* If this register might be in the 'g' packet, try that first -
6308 we are likely to read more than one register. If this is the
6309 first 'g' packet, we might be overly optimistic about its
6310 contents, so fall back to 'p'. */
6311 if (reg
->in_g_packet
)
6313 fetch_registers_using_g (regcache
);
6314 if (reg
->in_g_packet
)
6318 if (fetch_register_using_p (regcache
, reg
))
6321 /* This register is not available. */
6322 regcache_raw_supply (regcache
, reg
->regnum
, NULL
);
6327 fetch_registers_using_g (regcache
);
6329 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
6330 if (!rsa
->regs
[i
].in_g_packet
)
6331 if (!fetch_register_using_p (regcache
, &rsa
->regs
[i
]))
6333 /* This register is not available. */
6334 regcache_raw_supply (regcache
, i
, NULL
);
6338 /* Prepare to store registers. Since we may send them all (using a
6339 'G' request), we have to read out the ones we don't want to change
6343 remote_prepare_to_store (struct target_ops
*self
, struct regcache
*regcache
)
6345 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6347 gdb_byte buf
[MAX_REGISTER_SIZE
];
6349 /* Make sure the entire registers array is valid. */
6350 switch (remote_protocol_packets
[PACKET_P
].support
)
6352 case PACKET_DISABLE
:
6353 case PACKET_SUPPORT_UNKNOWN
:
6354 /* Make sure all the necessary registers are cached. */
6355 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
6356 if (rsa
->regs
[i
].in_g_packet
)
6357 regcache_raw_read (regcache
, rsa
->regs
[i
].regnum
, buf
);
6364 /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF
6365 packet was not recognized. */
6368 store_register_using_P (const struct regcache
*regcache
,
6369 struct packet_reg
*reg
)
6371 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
6372 struct remote_state
*rs
= get_remote_state ();
6373 /* Try storing a single register. */
6374 char *buf
= rs
->buf
;
6375 gdb_byte regp
[MAX_REGISTER_SIZE
];
6378 if (remote_protocol_packets
[PACKET_P
].support
== PACKET_DISABLE
)
6381 if (reg
->pnum
== -1)
6384 xsnprintf (buf
, get_remote_packet_size (), "P%s=", phex_nz (reg
->pnum
, 0));
6385 p
= buf
+ strlen (buf
);
6386 regcache_raw_collect (regcache
, reg
->regnum
, regp
);
6387 bin2hex (regp
, p
, register_size (gdbarch
, reg
->regnum
));
6389 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6391 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_P
]))
6396 error (_("Could not write register \"%s\"; remote failure reply '%s'"),
6397 gdbarch_register_name (gdbarch
, reg
->regnum
), rs
->buf
);
6398 case PACKET_UNKNOWN
:
6401 internal_error (__FILE__
, __LINE__
, _("Bad result from packet_ok"));
6405 /* Store register REGNUM, or all registers if REGNUM == -1, from the
6406 contents of the register cache buffer. FIXME: ignores errors. */
6409 store_registers_using_G (const struct regcache
*regcache
)
6411 struct remote_state
*rs
= get_remote_state ();
6412 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6416 /* Extract all the registers in the regcache copying them into a
6421 regs
= alloca (rsa
->sizeof_g_packet
);
6422 memset (regs
, 0, rsa
->sizeof_g_packet
);
6423 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
6425 struct packet_reg
*r
= &rsa
->regs
[i
];
6428 regcache_raw_collect (regcache
, r
->regnum
, regs
+ r
->offset
);
6432 /* Command describes registers byte by byte,
6433 each byte encoded as two hex characters. */
6436 /* remote_prepare_to_store insures that rsa->sizeof_g_packet gets
6438 bin2hex (regs
, p
, rsa
->sizeof_g_packet
);
6440 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6441 if (packet_check_result (rs
->buf
) == PACKET_ERROR
)
6442 error (_("Could not write registers; remote failure reply '%s'"),
6446 /* Store register REGNUM, or all registers if REGNUM == -1, from the contents
6447 of the register cache buffer. FIXME: ignores errors. */
6450 remote_store_registers (struct target_ops
*ops
,
6451 struct regcache
*regcache
, int regnum
)
6453 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6456 set_remote_traceframe ();
6457 set_general_thread (inferior_ptid
);
6461 struct packet_reg
*reg
= packet_reg_from_regnum (rsa
, regnum
);
6463 gdb_assert (reg
!= NULL
);
6465 /* Always prefer to store registers using the 'P' packet if
6466 possible; we often change only a small number of registers.
6467 Sometimes we change a larger number; we'd need help from a
6468 higher layer to know to use 'G'. */
6469 if (store_register_using_P (regcache
, reg
))
6472 /* For now, don't complain if we have no way to write the
6473 register. GDB loses track of unavailable registers too
6474 easily. Some day, this may be an error. We don't have
6475 any way to read the register, either... */
6476 if (!reg
->in_g_packet
)
6479 store_registers_using_G (regcache
);
6483 store_registers_using_G (regcache
);
6485 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
6486 if (!rsa
->regs
[i
].in_g_packet
)
6487 if (!store_register_using_P (regcache
, &rsa
->regs
[i
]))
6488 /* See above for why we do not issue an error here. */
6493 /* Return the number of hex digits in num. */
6496 hexnumlen (ULONGEST num
)
6500 for (i
= 0; num
!= 0; i
++)
6506 /* Set BUF to the minimum number of hex digits representing NUM. */
6509 hexnumstr (char *buf
, ULONGEST num
)
6511 int len
= hexnumlen (num
);
6513 return hexnumnstr (buf
, num
, len
);
6517 /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */
6520 hexnumnstr (char *buf
, ULONGEST num
, int width
)
6526 for (i
= width
- 1; i
>= 0; i
--)
6528 buf
[i
] = "0123456789abcdef"[(num
& 0xf)];
6535 /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */
6538 remote_address_masked (CORE_ADDR addr
)
6540 unsigned int address_size
= remote_address_size
;
6542 /* If "remoteaddresssize" was not set, default to target address size. */
6544 address_size
= gdbarch_addr_bit (target_gdbarch ());
6546 if (address_size
> 0
6547 && address_size
< (sizeof (ULONGEST
) * 8))
6549 /* Only create a mask when that mask can safely be constructed
6550 in a ULONGEST variable. */
6553 mask
= (mask
<< address_size
) - 1;
6559 /* Determine whether the remote target supports binary downloading.
6560 This is accomplished by sending a no-op memory write of zero length
6561 to the target at the specified address. It does not suffice to send
6562 the whole packet, since many stubs strip the eighth bit and
6563 subsequently compute a wrong checksum, which causes real havoc with
6566 NOTE: This can still lose if the serial line is not eight-bit
6567 clean. In cases like this, the user should clear "remote
6571 check_binary_download (CORE_ADDR addr
)
6573 struct remote_state
*rs
= get_remote_state ();
6575 switch (remote_protocol_packets
[PACKET_X
].support
)
6577 case PACKET_DISABLE
:
6581 case PACKET_SUPPORT_UNKNOWN
:
6587 p
+= hexnumstr (p
, (ULONGEST
) addr
);
6589 p
+= hexnumstr (p
, (ULONGEST
) 0);
6593 putpkt_binary (rs
->buf
, (int) (p
- rs
->buf
));
6594 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6596 if (rs
->buf
[0] == '\0')
6599 fprintf_unfiltered (gdb_stdlog
,
6600 "binary downloading NOT "
6601 "supported by target\n");
6602 remote_protocol_packets
[PACKET_X
].support
= PACKET_DISABLE
;
6607 fprintf_unfiltered (gdb_stdlog
,
6608 "binary downloading supported by target\n");
6609 remote_protocol_packets
[PACKET_X
].support
= PACKET_ENABLE
;
6616 /* Write memory data directly to the remote machine.
6617 This does not inform the data cache; the data cache uses this.
6618 HEADER is the starting part of the packet.
6619 MEMADDR is the address in the remote memory space.
6620 MYADDR is the address of the buffer in our space.
6621 LEN is the number of bytes.
6622 PACKET_FORMAT should be either 'X' or 'M', and indicates if we
6623 should send data as binary ('X'), or hex-encoded ('M').
6625 The function creates packet of the form
6626 <HEADER><ADDRESS>,<LENGTH>:<DATA>
6628 where encoding of <DATA> is termined by PACKET_FORMAT.
6630 If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma
6633 Return the transferred status, error or OK (an
6634 'enum target_xfer_status' value). Save the number of bytes
6635 transferred in *XFERED_LEN. Only transfer a single packet. */
6637 static enum target_xfer_status
6638 remote_write_bytes_aux (const char *header
, CORE_ADDR memaddr
,
6639 const gdb_byte
*myaddr
, ULONGEST len
,
6640 ULONGEST
*xfered_len
, char packet_format
,
6643 struct remote_state
*rs
= get_remote_state ();
6653 if (packet_format
!= 'X' && packet_format
!= 'M')
6654 internal_error (__FILE__
, __LINE__
,
6655 _("remote_write_bytes_aux: bad packet format"));
6658 return TARGET_XFER_EOF
;
6660 payload_size
= get_memory_write_packet_size ();
6662 /* The packet buffer will be large enough for the payload;
6663 get_memory_packet_size ensures this. */
6666 /* Compute the size of the actual payload by subtracting out the
6667 packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */
6669 payload_size
-= strlen ("$,:#NN");
6671 /* The comma won't be used. */
6673 header_length
= strlen (header
);
6674 payload_size
-= header_length
;
6675 payload_size
-= hexnumlen (memaddr
);
6677 /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */
6679 strcat (rs
->buf
, header
);
6680 p
= rs
->buf
+ strlen (header
);
6682 /* Compute a best guess of the number of bytes actually transfered. */
6683 if (packet_format
== 'X')
6685 /* Best guess at number of bytes that will fit. */
6686 todo
= min (len
, payload_size
);
6688 payload_size
-= hexnumlen (todo
);
6689 todo
= min (todo
, payload_size
);
6693 /* Num bytes that will fit. */
6694 todo
= min (len
, payload_size
/ 2);
6696 payload_size
-= hexnumlen (todo
);
6697 todo
= min (todo
, payload_size
/ 2);
6701 internal_error (__FILE__
, __LINE__
,
6702 _("minimum packet size too small to write data"));
6704 /* If we already need another packet, then try to align the end
6705 of this packet to a useful boundary. */
6706 if (todo
> 2 * REMOTE_ALIGN_WRITES
&& todo
< len
)
6707 todo
= ((memaddr
+ todo
) & ~(REMOTE_ALIGN_WRITES
- 1)) - memaddr
;
6709 /* Append "<memaddr>". */
6710 memaddr
= remote_address_masked (memaddr
);
6711 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
6718 /* Append <len>. Retain the location/size of <len>. It may need to
6719 be adjusted once the packet body has been created. */
6721 plenlen
= hexnumstr (p
, (ULONGEST
) todo
);
6729 /* Append the packet body. */
6730 if (packet_format
== 'X')
6732 /* Binary mode. Send target system values byte by byte, in
6733 increasing byte addresses. Only escape certain critical
6735 payload_length
= remote_escape_output (myaddr
, todo
, (gdb_byte
*) p
,
6736 &nr_bytes
, payload_size
);
6738 /* If not all TODO bytes fit, then we'll need another packet. Make
6739 a second try to keep the end of the packet aligned. Don't do
6740 this if the packet is tiny. */
6741 if (nr_bytes
< todo
&& nr_bytes
> 2 * REMOTE_ALIGN_WRITES
)
6745 new_nr_bytes
= (((memaddr
+ nr_bytes
) & ~(REMOTE_ALIGN_WRITES
- 1))
6747 if (new_nr_bytes
!= nr_bytes
)
6748 payload_length
= remote_escape_output (myaddr
, new_nr_bytes
,
6749 (gdb_byte
*) p
, &nr_bytes
,
6753 p
+= payload_length
;
6754 if (use_length
&& nr_bytes
< todo
)
6756 /* Escape chars have filled up the buffer prematurely,
6757 and we have actually sent fewer bytes than planned.
6758 Fix-up the length field of the packet. Use the same
6759 number of characters as before. */
6760 plen
+= hexnumnstr (plen
, (ULONGEST
) nr_bytes
, plenlen
);
6761 *plen
= ':'; /* overwrite \0 from hexnumnstr() */
6766 /* Normal mode: Send target system values byte by byte, in
6767 increasing byte addresses. Each byte is encoded as a two hex
6769 nr_bytes
= bin2hex (myaddr
, p
, todo
);
6773 putpkt_binary (rs
->buf
, (int) (p
- rs
->buf
));
6774 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6776 if (rs
->buf
[0] == 'E')
6777 return TARGET_XFER_E_IO
;
6779 /* Return NR_BYTES, not TODO, in case escape chars caused us to send
6780 fewer bytes than we'd planned. */
6781 *xfered_len
= (ULONGEST
) nr_bytes
;
6782 return TARGET_XFER_OK
;
6785 /* Write memory data directly to the remote machine.
6786 This does not inform the data cache; the data cache uses this.
6787 MEMADDR is the address in the remote memory space.
6788 MYADDR is the address of the buffer in our space.
6789 LEN is the number of bytes.
6791 Return the transferred status, error or OK (an
6792 'enum target_xfer_status' value). Save the number of bytes
6793 transferred in *XFERED_LEN. Only transfer a single packet. */
6795 static enum target_xfer_status
6796 remote_write_bytes (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, ULONGEST len
,
6797 ULONGEST
*xfered_len
)
6799 char *packet_format
= 0;
6801 /* Check whether the target supports binary download. */
6802 check_binary_download (memaddr
);
6804 switch (remote_protocol_packets
[PACKET_X
].support
)
6807 packet_format
= "X";
6809 case PACKET_DISABLE
:
6810 packet_format
= "M";
6812 case PACKET_SUPPORT_UNKNOWN
:
6813 internal_error (__FILE__
, __LINE__
,
6814 _("remote_write_bytes: bad internal state"));
6816 internal_error (__FILE__
, __LINE__
, _("bad switch"));
6819 return remote_write_bytes_aux (packet_format
,
6820 memaddr
, myaddr
, len
, xfered_len
,
6821 packet_format
[0], 1);
6824 /* Read memory data directly from the remote machine.
6825 This does not use the data cache; the data cache uses this.
6826 MEMADDR is the address in the remote memory space.
6827 MYADDR is the address of the buffer in our space.
6828 LEN is the number of bytes.
6830 Return the transferred status, error or OK (an
6831 'enum target_xfer_status' value). Save the number of bytes
6832 transferred in *XFERED_LEN. */
6834 static enum target_xfer_status
6835 remote_read_bytes (CORE_ADDR memaddr
, gdb_byte
*myaddr
, ULONGEST len
,
6836 ULONGEST
*xfered_len
)
6838 struct remote_state
*rs
= get_remote_state ();
6839 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
;
6879 /* Sends a packet with content determined by the printf format string
6880 FORMAT and the remaining arguments, then gets the reply. Returns
6881 whether the packet was a success, a failure, or unknown. */
6883 static enum packet_result
6884 remote_send_printf (const char *format
, ...)
6886 struct remote_state
*rs
= get_remote_state ();
6887 int max_size
= get_remote_packet_size ();
6890 va_start (ap
, format
);
6893 if (vsnprintf (rs
->buf
, max_size
, format
, ap
) >= max_size
)
6894 internal_error (__FILE__
, __LINE__
, _("Too long remote packet."));
6896 if (putpkt (rs
->buf
) < 0)
6897 error (_("Communication problem with target."));
6900 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6902 return packet_check_result (rs
->buf
);
6906 restore_remote_timeout (void *p
)
6908 int value
= *(int *)p
;
6910 remote_timeout
= value
;
6913 /* Flash writing can take quite some time. We'll set
6914 effectively infinite timeout for flash operations.
6915 In future, we'll need to decide on a better approach. */
6916 static const int remote_flash_timeout
= 1000;
6919 remote_flash_erase (struct target_ops
*ops
,
6920 ULONGEST address
, LONGEST length
)
6922 int addr_size
= gdbarch_addr_bit (target_gdbarch ()) / 8;
6923 int saved_remote_timeout
= remote_timeout
;
6924 enum packet_result ret
;
6925 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
6926 &saved_remote_timeout
);
6928 remote_timeout
= remote_flash_timeout
;
6930 ret
= remote_send_printf ("vFlashErase:%s,%s",
6931 phex (address
, addr_size
),
6935 case PACKET_UNKNOWN
:
6936 error (_("Remote target does not support flash erase"));
6938 error (_("Error erasing flash with vFlashErase packet"));
6943 do_cleanups (back_to
);
6946 static enum target_xfer_status
6947 remote_flash_write (struct target_ops
*ops
, ULONGEST address
,
6948 ULONGEST length
, ULONGEST
*xfered_len
,
6949 const gdb_byte
*data
)
6951 int saved_remote_timeout
= remote_timeout
;
6952 enum target_xfer_status ret
;
6953 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
6954 &saved_remote_timeout
);
6956 remote_timeout
= remote_flash_timeout
;
6957 ret
= remote_write_bytes_aux ("vFlashWrite:", address
, data
, length
,
6959 do_cleanups (back_to
);
6965 remote_flash_done (struct target_ops
*ops
)
6967 int saved_remote_timeout
= remote_timeout
;
6969 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
6970 &saved_remote_timeout
);
6972 remote_timeout
= remote_flash_timeout
;
6973 ret
= remote_send_printf ("vFlashDone");
6974 do_cleanups (back_to
);
6978 case PACKET_UNKNOWN
:
6979 error (_("Remote target does not support vFlashDone"));
6981 error (_("Error finishing flash operation"));
6988 remote_files_info (struct target_ops
*ignore
)
6990 puts_filtered ("Debugging a target over a serial line.\n");
6993 /* Stuff for dealing with the packets which are part of this protocol.
6994 See comment at top of file for details. */
6996 /* Close/unpush the remote target, and throw a TARGET_CLOSE_ERROR
6997 error to higher layers. Called when a serial error is detected.
6998 The exception message is STRING, followed by a colon and a blank,
6999 the system error message for errno at function entry and final dot
7000 for output compatibility with throw_perror_with_name. */
7003 unpush_and_perror (const char *string
)
7005 int saved_errno
= errno
;
7007 remote_unpush_target ();
7008 throw_error (TARGET_CLOSE_ERROR
, "%s: %s.", string
,
7009 safe_strerror (saved_errno
));
7012 /* Read a single character from the remote end. */
7015 readchar (int timeout
)
7018 struct remote_state
*rs
= get_remote_state ();
7020 ch
= serial_readchar (rs
->remote_desc
, timeout
);
7025 switch ((enum serial_rc
) ch
)
7028 remote_unpush_target ();
7029 throw_error (TARGET_CLOSE_ERROR
, _("Remote connection closed"));
7032 unpush_and_perror (_("Remote communication error. "
7033 "Target disconnected."));
7035 case SERIAL_TIMEOUT
:
7041 /* Wrapper for serial_write that closes the target and throws if
7045 remote_serial_write (const char *str
, int len
)
7047 struct remote_state
*rs
= get_remote_state ();
7049 if (serial_write (rs
->remote_desc
, str
, len
))
7051 unpush_and_perror (_("Remote communication error. "
7052 "Target disconnected."));
7056 /* Send the command in *BUF to the remote machine, and read the reply
7057 into *BUF. Report an error if we get an error reply. Resize
7058 *BUF using xrealloc if necessary to hold the result, and update
7062 remote_send (char **buf
,
7066 getpkt (buf
, sizeof_buf
, 0);
7068 if ((*buf
)[0] == 'E')
7069 error (_("Remote failure reply: %s"), *buf
);
7072 /* Return a pointer to an xmalloc'ed string representing an escaped
7073 version of BUF, of len N. E.g. \n is converted to \\n, \t to \\t,
7074 etc. The caller is responsible for releasing the returned
7078 escape_buffer (const char *buf
, int n
)
7080 struct cleanup
*old_chain
;
7081 struct ui_file
*stb
;
7084 stb
= mem_fileopen ();
7085 old_chain
= make_cleanup_ui_file_delete (stb
);
7087 fputstrn_unfiltered (buf
, n
, 0, stb
);
7088 str
= ui_file_xstrdup (stb
, NULL
);
7089 do_cleanups (old_chain
);
7093 /* Display a null-terminated packet on stdout, for debugging, using C
7097 print_packet (char *buf
)
7099 puts_filtered ("\"");
7100 fputstr_filtered (buf
, '"', gdb_stdout
);
7101 puts_filtered ("\"");
7107 return putpkt_binary (buf
, strlen (buf
));
7110 /* Send a packet to the remote machine, with error checking. The data
7111 of the packet is in BUF. The string in BUF can be at most
7112 get_remote_packet_size () - 5 to account for the $, # and checksum,
7113 and for a possible /0 if we are debugging (remote_debug) and want
7114 to print the sent packet as a string. */
7117 putpkt_binary (char *buf
, int cnt
)
7119 struct remote_state
*rs
= get_remote_state ();
7121 unsigned char csum
= 0;
7122 char *buf2
= alloca (cnt
+ 6);
7129 /* Catch cases like trying to read memory or listing threads while
7130 we're waiting for a stop reply. The remote server wouldn't be
7131 ready to handle this request, so we'd hang and timeout. We don't
7132 have to worry about this in synchronous mode, because in that
7133 case it's not possible to issue a command while the target is
7134 running. This is not a problem in non-stop mode, because in that
7135 case, the stub is always ready to process serial input. */
7136 if (!non_stop
&& target_can_async_p () && rs
->waiting_for_stop_reply
)
7137 error (_("Cannot execute this command while the target is running."));
7139 /* We're sending out a new packet. Make sure we don't look at a
7140 stale cached response. */
7141 rs
->cached_wait_status
= 0;
7143 /* Copy the packet into buffer BUF2, encapsulating it
7144 and giving it a checksum. */
7149 for (i
= 0; i
< cnt
; i
++)
7155 *p
++ = tohex ((csum
>> 4) & 0xf);
7156 *p
++ = tohex (csum
& 0xf);
7158 /* Send it over and over until we get a positive ack. */
7162 int started_error_output
= 0;
7166 struct cleanup
*old_chain
;
7170 str
= escape_buffer (buf2
, p
- buf2
);
7171 old_chain
= make_cleanup (xfree
, str
);
7172 fprintf_unfiltered (gdb_stdlog
, "Sending packet: %s...", str
);
7173 gdb_flush (gdb_stdlog
);
7174 do_cleanups (old_chain
);
7176 remote_serial_write (buf2
, p
- buf2
);
7178 /* If this is a no acks version of the remote protocol, send the
7179 packet and move on. */
7183 /* Read until either a timeout occurs (-2) or '+' is read.
7184 Handle any notification that arrives in the mean time. */
7187 ch
= readchar (remote_timeout
);
7195 case SERIAL_TIMEOUT
:
7198 if (started_error_output
)
7200 putchar_unfiltered ('\n');
7201 started_error_output
= 0;
7210 fprintf_unfiltered (gdb_stdlog
, "Ack\n");
7214 fprintf_unfiltered (gdb_stdlog
, "Nak\n");
7216 case SERIAL_TIMEOUT
:
7220 break; /* Retransmit buffer. */
7224 fprintf_unfiltered (gdb_stdlog
,
7225 "Packet instead of Ack, ignoring it\n");
7226 /* It's probably an old response sent because an ACK
7227 was lost. Gobble up the packet and ack it so it
7228 doesn't get retransmitted when we resend this
7231 remote_serial_write ("+", 1);
7232 continue; /* Now, go look for +. */
7239 /* If we got a notification, handle it, and go back to looking
7241 /* We've found the start of a notification. Now
7242 collect the data. */
7243 val
= read_frame (&rs
->buf
, &rs
->buf_size
);
7248 struct cleanup
*old_chain
;
7251 str
= escape_buffer (rs
->buf
, val
);
7252 old_chain
= make_cleanup (xfree
, str
);
7253 fprintf_unfiltered (gdb_stdlog
,
7254 " Notification received: %s\n",
7256 do_cleanups (old_chain
);
7258 handle_notification (rs
->notif_state
, rs
->buf
);
7259 /* We're in sync now, rewait for the ack. */
7266 if (!started_error_output
)
7268 started_error_output
= 1;
7269 fprintf_unfiltered (gdb_stdlog
, "putpkt: Junk: ");
7271 fputc_unfiltered (ch
& 0177, gdb_stdlog
);
7272 fprintf_unfiltered (gdb_stdlog
, "%s", rs
->buf
);
7281 if (!started_error_output
)
7283 started_error_output
= 1;
7284 fprintf_unfiltered (gdb_stdlog
, "putpkt: Junk: ");
7286 fputc_unfiltered (ch
& 0177, gdb_stdlog
);
7290 break; /* Here to retransmit. */
7294 /* This is wrong. If doing a long backtrace, the user should be
7295 able to get out next time we call QUIT, without anything as
7296 violent as interrupt_query. If we want to provide a way out of
7297 here without getting to the next QUIT, it should be based on
7298 hitting ^C twice as in remote_wait. */
7309 /* Come here after finding the start of a frame when we expected an
7310 ack. Do our best to discard the rest of this packet. */
7319 c
= readchar (remote_timeout
);
7322 case SERIAL_TIMEOUT
:
7323 /* Nothing we can do. */
7326 /* Discard the two bytes of checksum and stop. */
7327 c
= readchar (remote_timeout
);
7329 c
= readchar (remote_timeout
);
7332 case '*': /* Run length encoding. */
7333 /* Discard the repeat count. */
7334 c
= readchar (remote_timeout
);
7339 /* A regular character. */
7345 /* Come here after finding the start of the frame. Collect the rest
7346 into *BUF, verifying the checksum, length, and handling run-length
7347 compression. NUL terminate the buffer. If there is not enough room,
7348 expand *BUF using xrealloc.
7350 Returns -1 on error, number of characters in buffer (ignoring the
7351 trailing NULL) on success. (could be extended to return one of the
7352 SERIAL status indications). */
7355 read_frame (char **buf_p
,
7362 struct remote_state
*rs
= get_remote_state ();
7369 c
= readchar (remote_timeout
);
7372 case SERIAL_TIMEOUT
:
7374 fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog
);
7378 fputs_filtered ("Saw new packet start in middle of old one\n",
7380 return -1; /* Start a new packet, count retries. */
7383 unsigned char pktcsum
;
7389 check_0
= readchar (remote_timeout
);
7391 check_1
= readchar (remote_timeout
);
7393 if (check_0
== SERIAL_TIMEOUT
|| check_1
== SERIAL_TIMEOUT
)
7396 fputs_filtered ("Timeout in checksum, retrying\n",
7400 else if (check_0
< 0 || check_1
< 0)
7403 fputs_filtered ("Communication error in checksum\n",
7408 /* Don't recompute the checksum; with no ack packets we
7409 don't have any way to indicate a packet retransmission
7414 pktcsum
= (fromhex (check_0
) << 4) | fromhex (check_1
);
7415 if (csum
== pktcsum
)
7420 struct cleanup
*old_chain
;
7423 str
= escape_buffer (buf
, bc
);
7424 old_chain
= make_cleanup (xfree
, str
);
7425 fprintf_unfiltered (gdb_stdlog
,
7426 "Bad checksum, sentsum=0x%x, "
7427 "csum=0x%x, buf=%s\n",
7428 pktcsum
, csum
, str
);
7429 do_cleanups (old_chain
);
7431 /* Number of characters in buffer ignoring trailing
7435 case '*': /* Run length encoding. */
7440 c
= readchar (remote_timeout
);
7442 repeat
= c
- ' ' + 3; /* Compute repeat count. */
7444 /* The character before ``*'' is repeated. */
7446 if (repeat
> 0 && repeat
<= 255 && bc
> 0)
7448 if (bc
+ repeat
- 1 >= *sizeof_buf
- 1)
7450 /* Make some more room in the buffer. */
7451 *sizeof_buf
+= repeat
;
7452 *buf_p
= xrealloc (*buf_p
, *sizeof_buf
);
7456 memset (&buf
[bc
], buf
[bc
- 1], repeat
);
7462 printf_filtered (_("Invalid run length encoding: %s\n"), buf
);
7466 if (bc
>= *sizeof_buf
- 1)
7468 /* Make some more room in the buffer. */
7470 *buf_p
= xrealloc (*buf_p
, *sizeof_buf
);
7481 /* Read a packet from the remote machine, with error checking, and
7482 store it in *BUF. Resize *BUF using xrealloc if necessary to hold
7483 the result, and update *SIZEOF_BUF. If FOREVER, wait forever
7484 rather than timing out; this is used (in synchronous mode) to wait
7485 for a target that is is executing user code to stop. */
7486 /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we
7487 don't have to change all the calls to getpkt to deal with the
7488 return value, because at the moment I don't know what the right
7489 thing to do it for those. */
7497 timed_out
= getpkt_sane (buf
, sizeof_buf
, forever
);
7501 /* Read a packet from the remote machine, with error checking, and
7502 store it in *BUF. Resize *BUF using xrealloc if necessary to hold
7503 the result, and update *SIZEOF_BUF. If FOREVER, wait forever
7504 rather than timing out; this is used (in synchronous mode) to wait
7505 for a target that is is executing user code to stop. If FOREVER ==
7506 0, this function is allowed to time out gracefully and return an
7507 indication of this to the caller. Otherwise return the number of
7508 bytes read. If EXPECTING_NOTIF, consider receiving a notification
7509 enough reason to return to the caller. *IS_NOTIF is an output
7510 boolean that indicates whether *BUF holds a notification or not
7511 (a regular packet). */
7514 getpkt_or_notif_sane_1 (char **buf
, long *sizeof_buf
, int forever
,
7515 int expecting_notif
, int *is_notif
)
7517 struct remote_state
*rs
= get_remote_state ();
7523 /* We're reading a new response. Make sure we don't look at a
7524 previously cached response. */
7525 rs
->cached_wait_status
= 0;
7527 strcpy (*buf
, "timeout");
7530 timeout
= watchdog
> 0 ? watchdog
: -1;
7531 else if (expecting_notif
)
7532 timeout
= 0; /* There should already be a char in the buffer. If
7535 timeout
= remote_timeout
;
7539 /* Process any number of notifications, and then return when
7543 /* If we get a timeout or bad checksum, retry up to MAX_TRIES
7545 for (tries
= 1; tries
<= MAX_TRIES
; tries
++)
7547 /* This can loop forever if the remote side sends us
7548 characters continuously, but if it pauses, we'll get
7549 SERIAL_TIMEOUT from readchar because of timeout. Then
7550 we'll count that as a retry.
7552 Note that even when forever is set, we will only wait
7553 forever prior to the start of a packet. After that, we
7554 expect characters to arrive at a brisk pace. They should
7555 show up within remote_timeout intervals. */
7557 c
= readchar (timeout
);
7558 while (c
!= SERIAL_TIMEOUT
&& c
!= '$' && c
!= '%');
7560 if (c
== SERIAL_TIMEOUT
)
7562 if (expecting_notif
)
7563 return -1; /* Don't complain, it's normal to not get
7564 anything in this case. */
7566 if (forever
) /* Watchdog went off? Kill the target. */
7569 remote_unpush_target ();
7570 throw_error (TARGET_CLOSE_ERROR
,
7571 _("Watchdog timeout has expired. "
7572 "Target detached."));
7575 fputs_filtered ("Timed out.\n", gdb_stdlog
);
7579 /* We've found the start of a packet or notification.
7580 Now collect the data. */
7581 val
= read_frame (buf
, sizeof_buf
);
7586 remote_serial_write ("-", 1);
7589 if (tries
> MAX_TRIES
)
7591 /* We have tried hard enough, and just can't receive the
7592 packet/notification. Give up. */
7593 printf_unfiltered (_("Ignoring packet error, continuing...\n"));
7595 /* Skip the ack char if we're in no-ack mode. */
7596 if (!rs
->noack_mode
)
7597 remote_serial_write ("+", 1);
7601 /* If we got an ordinary packet, return that to our caller. */
7606 struct cleanup
*old_chain
;
7609 str
= escape_buffer (*buf
, val
);
7610 old_chain
= make_cleanup (xfree
, str
);
7611 fprintf_unfiltered (gdb_stdlog
, "Packet received: %s\n", str
);
7612 do_cleanups (old_chain
);
7615 /* Skip the ack char if we're in no-ack mode. */
7616 if (!rs
->noack_mode
)
7617 remote_serial_write ("+", 1);
7618 if (is_notif
!= NULL
)
7623 /* If we got a notification, handle it, and go back to looking
7627 gdb_assert (c
== '%');
7631 struct cleanup
*old_chain
;
7634 str
= escape_buffer (*buf
, val
);
7635 old_chain
= make_cleanup (xfree
, str
);
7636 fprintf_unfiltered (gdb_stdlog
,
7637 " Notification received: %s\n",
7639 do_cleanups (old_chain
);
7641 if (is_notif
!= NULL
)
7644 handle_notification (rs
->notif_state
, *buf
);
7646 /* Notifications require no acknowledgement. */
7648 if (expecting_notif
)
7655 getpkt_sane (char **buf
, long *sizeof_buf
, int forever
)
7657 return getpkt_or_notif_sane_1 (buf
, sizeof_buf
, forever
, 0, NULL
);
7661 getpkt_or_notif_sane (char **buf
, long *sizeof_buf
, int forever
,
7664 return getpkt_or_notif_sane_1 (buf
, sizeof_buf
, forever
, 1,
7670 remote_kill (struct target_ops
*ops
)
7672 volatile struct gdb_exception ex
;
7674 /* Catch errors so the user can quit from gdb even when we
7675 aren't on speaking terms with the remote system. */
7676 TRY_CATCH (ex
, RETURN_MASK_ERROR
)
7682 if (ex
.error
== TARGET_CLOSE_ERROR
)
7684 /* If we got an (EOF) error that caused the target
7685 to go away, then we're done, that's what we wanted.
7686 "k" is susceptible to cause a premature EOF, given
7687 that the remote server isn't actually required to
7688 reply to "k", and it can happen that it doesn't
7689 even get to reply ACK to the "k". */
7693 /* Otherwise, something went wrong. We didn't actually kill
7694 the target. Just propagate the exception, and let the
7695 user or higher layers decide what to do. */
7696 throw_exception (ex
);
7699 /* We've killed the remote end, we get to mourn it. Since this is
7700 target remote, single-process, mourning the inferior also
7701 unpushes remote_ops. */
7702 target_mourn_inferior ();
7706 remote_vkill (int pid
, struct remote_state
*rs
)
7708 if (remote_protocol_packets
[PACKET_vKill
].support
== PACKET_DISABLE
)
7711 /* Tell the remote target to detach. */
7712 xsnprintf (rs
->buf
, get_remote_packet_size (), "vKill;%x", pid
);
7714 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7716 if (packet_ok (rs
->buf
,
7717 &remote_protocol_packets
[PACKET_vKill
]) == PACKET_OK
)
7719 else if (remote_protocol_packets
[PACKET_vKill
].support
== PACKET_DISABLE
)
7726 extended_remote_kill (struct target_ops
*ops
)
7729 int pid
= ptid_get_pid (inferior_ptid
);
7730 struct remote_state
*rs
= get_remote_state ();
7732 res
= remote_vkill (pid
, rs
);
7733 if (res
== -1 && !(rs
->extended
&& remote_multi_process_p (rs
)))
7735 /* Don't try 'k' on a multi-process aware stub -- it has no way
7736 to specify the pid. */
7740 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7741 if (rs
->buf
[0] != 'O' || rs
->buf
[0] != 'K')
7744 /* Don't wait for it to die. I'm not really sure it matters whether
7745 we do or not. For the existing stubs, kill is a noop. */
7751 error (_("Can't kill process"));
7753 target_mourn_inferior ();
7757 remote_mourn (struct target_ops
*ops
)
7759 remote_mourn_1 (ops
);
7762 /* Worker function for remote_mourn. */
7764 remote_mourn_1 (struct target_ops
*target
)
7766 unpush_target (target
);
7768 /* remote_close takes care of doing most of the clean up. */
7769 generic_mourn_inferior ();
7773 extended_remote_mourn_1 (struct target_ops
*target
)
7775 struct remote_state
*rs
= get_remote_state ();
7777 /* In case we got here due to an error, but we're going to stay
7779 rs
->waiting_for_stop_reply
= 0;
7781 /* If the current general thread belonged to the process we just
7782 detached from or has exited, the remote side current general
7783 thread becomes undefined. Considering a case like this:
7785 - We just got here due to a detach.
7786 - The process that we're detaching from happens to immediately
7787 report a global breakpoint being hit in non-stop mode, in the
7788 same thread we had selected before.
7789 - GDB attaches to this process again.
7790 - This event happens to be the next event we handle.
7792 GDB would consider that the current general thread didn't need to
7793 be set on the stub side (with Hg), since for all it knew,
7794 GENERAL_THREAD hadn't changed.
7796 Notice that although in all-stop mode, the remote server always
7797 sets the current thread to the thread reporting the stop event,
7798 that doesn't happen in non-stop mode; in non-stop, the stub *must
7799 not* change the current thread when reporting a breakpoint hit,
7800 due to the decoupling of event reporting and event handling.
7802 To keep things simple, we always invalidate our notion of the
7804 record_currthread (rs
, minus_one_ptid
);
7806 /* Unlike "target remote", we do not want to unpush the target; then
7807 the next time the user says "run", we won't be connected. */
7809 /* Call common code to mark the inferior as not running. */
7810 generic_mourn_inferior ();
7812 if (!have_inferiors ())
7814 if (!remote_multi_process_p (rs
))
7816 /* Check whether the target is running now - some remote stubs
7817 automatically restart after kill. */
7819 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7821 if (rs
->buf
[0] == 'S' || rs
->buf
[0] == 'T')
7823 /* Assume that the target has been restarted. Set
7824 inferior_ptid so that bits of core GDB realizes
7825 there's something here, e.g., so that the user can
7826 say "kill" again. */
7827 inferior_ptid
= magic_null_ptid
;
7834 extended_remote_mourn (struct target_ops
*ops
)
7836 extended_remote_mourn_1 (ops
);
7840 extended_remote_supports_disable_randomization (struct target_ops
*self
)
7842 return (remote_protocol_packets
[PACKET_QDisableRandomization
].support
7847 extended_remote_disable_randomization (int val
)
7849 struct remote_state
*rs
= get_remote_state ();
7852 xsnprintf (rs
->buf
, get_remote_packet_size (), "QDisableRandomization:%x",
7855 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
7857 error (_("Target does not support QDisableRandomization."));
7858 if (strcmp (reply
, "OK") != 0)
7859 error (_("Bogus QDisableRandomization reply from target: %s"), reply
);
7863 extended_remote_run (char *args
)
7865 struct remote_state
*rs
= get_remote_state ();
7868 /* If the user has disabled vRun support, or we have detected that
7869 support is not available, do not try it. */
7870 if (remote_protocol_packets
[PACKET_vRun
].support
== PACKET_DISABLE
)
7873 strcpy (rs
->buf
, "vRun;");
7874 len
= strlen (rs
->buf
);
7876 if (strlen (remote_exec_file
) * 2 + len
>= get_remote_packet_size ())
7877 error (_("Remote file name too long for run packet"));
7878 len
+= 2 * bin2hex ((gdb_byte
*) remote_exec_file
, rs
->buf
+ len
,
7879 strlen (remote_exec_file
));
7881 gdb_assert (args
!= NULL
);
7884 struct cleanup
*back_to
;
7888 argv
= gdb_buildargv (args
);
7889 back_to
= make_cleanup ((void (*) (void *)) freeargv
, argv
);
7890 for (i
= 0; argv
[i
] != NULL
; i
++)
7892 if (strlen (argv
[i
]) * 2 + 1 + len
>= get_remote_packet_size ())
7893 error (_("Argument list too long for run packet"));
7894 rs
->buf
[len
++] = ';';
7895 len
+= 2 * bin2hex ((gdb_byte
*) argv
[i
], rs
->buf
+ len
,
7898 do_cleanups (back_to
);
7901 rs
->buf
[len
++] = '\0';
7904 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7906 if (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_vRun
]) == PACKET_OK
)
7908 /* We have a wait response. All is well. */
7911 else if (remote_protocol_packets
[PACKET_vRun
].support
== PACKET_DISABLE
)
7912 /* It wasn't disabled before, but it is now. */
7916 if (remote_exec_file
[0] == '\0')
7917 error (_("Running the default executable on the remote target failed; "
7918 "try \"set remote exec-file\"?"));
7920 error (_("Running \"%s\" on the remote target failed"),
7925 /* In the extended protocol we want to be able to do things like
7926 "run" and have them basically work as expected. So we need
7927 a special create_inferior function. We support changing the
7928 executable file and the command line arguments, but not the
7932 extended_remote_create_inferior (struct target_ops
*ops
,
7933 char *exec_file
, char *args
,
7934 char **env
, int from_tty
)
7938 struct remote_state
*rs
= get_remote_state ();
7940 /* If running asynchronously, register the target file descriptor
7941 with the event loop. */
7942 if (target_can_async_p ())
7943 target_async (inferior_event_handler
, 0);
7945 /* Disable address space randomization if requested (and supported). */
7946 if (extended_remote_supports_disable_randomization (ops
))
7947 extended_remote_disable_randomization (disable_randomization
);
7949 /* Now restart the remote server. */
7950 run_worked
= extended_remote_run (args
) != -1;
7953 /* vRun was not supported. Fail if we need it to do what the
7955 if (remote_exec_file
[0])
7956 error (_("Remote target does not support \"set remote exec-file\""));
7958 error (_("Remote target does not support \"set args\" or run <ARGS>"));
7960 /* Fall back to "R". */
7961 extended_remote_restart ();
7964 if (!have_inferiors ())
7966 /* Clean up from the last time we ran, before we mark the target
7967 running again. This will mark breakpoints uninserted, and
7968 get_offsets may insert breakpoints. */
7969 init_thread_list ();
7970 init_wait_for_inferior ();
7973 /* vRun's success return is a stop reply. */
7974 stop_reply
= run_worked
? rs
->buf
: NULL
;
7975 add_current_inferior_and_thread (stop_reply
);
7977 /* Get updated offsets, if the stub uses qOffsets. */
7982 /* Given a location's target info BP_TGT and the packet buffer BUF, output
7983 the list of conditions (in agent expression bytecode format), if any, the
7984 target needs to evaluate. The output is placed into the packet buffer
7985 started from BUF and ended at BUF_END. */
7988 remote_add_target_side_condition (struct gdbarch
*gdbarch
,
7989 struct bp_target_info
*bp_tgt
, char *buf
,
7992 struct agent_expr
*aexpr
= NULL
;
7995 char *buf_start
= buf
;
7997 if (VEC_empty (agent_expr_p
, bp_tgt
->conditions
))
8000 buf
+= strlen (buf
);
8001 xsnprintf (buf
, buf_end
- buf
, "%s", ";");
8004 /* Send conditions to the target and free the vector. */
8006 VEC_iterate (agent_expr_p
, bp_tgt
->conditions
, ix
, aexpr
);
8009 xsnprintf (buf
, buf_end
- buf
, "X%x,", aexpr
->len
);
8010 buf
+= strlen (buf
);
8011 for (i
= 0; i
< aexpr
->len
; ++i
)
8012 buf
= pack_hex_byte (buf
, aexpr
->buf
[i
]);
8019 remote_add_target_side_commands (struct gdbarch
*gdbarch
,
8020 struct bp_target_info
*bp_tgt
, char *buf
)
8022 struct agent_expr
*aexpr
= NULL
;
8025 if (VEC_empty (agent_expr_p
, bp_tgt
->tcommands
))
8028 buf
+= strlen (buf
);
8030 sprintf (buf
, ";cmds:%x,", bp_tgt
->persist
);
8031 buf
+= strlen (buf
);
8033 /* Concatenate all the agent expressions that are commands into the
8036 VEC_iterate (agent_expr_p
, bp_tgt
->tcommands
, ix
, aexpr
);
8039 sprintf (buf
, "X%x,", aexpr
->len
);
8040 buf
+= strlen (buf
);
8041 for (i
= 0; i
< aexpr
->len
; ++i
)
8042 buf
= pack_hex_byte (buf
, aexpr
->buf
[i
]);
8047 /* Insert a breakpoint. On targets that have software breakpoint
8048 support, we ask the remote target to do the work; on targets
8049 which don't, we insert a traditional memory breakpoint. */
8052 remote_insert_breakpoint (struct target_ops
*ops
,
8053 struct gdbarch
*gdbarch
,
8054 struct bp_target_info
*bp_tgt
)
8056 /* Try the "Z" s/w breakpoint packet if it is not already disabled.
8057 If it succeeds, then set the support to PACKET_ENABLE. If it
8058 fails, and the user has explicitly requested the Z support then
8059 report an error, otherwise, mark it disabled and go on. */
8061 if (remote_protocol_packets
[PACKET_Z0
].support
!= PACKET_DISABLE
)
8063 CORE_ADDR addr
= bp_tgt
->placed_address
;
8064 struct remote_state
*rs
;
8067 struct condition_list
*cond
= NULL
;
8069 /* Make sure the remote is pointing at the right process, if
8071 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
8072 set_general_process ();
8074 gdbarch_remote_breakpoint_from_pc (gdbarch
, &addr
, &bpsize
);
8076 rs
= get_remote_state ();
8078 endbuf
= rs
->buf
+ get_remote_packet_size ();
8083 addr
= (ULONGEST
) remote_address_masked (addr
);
8084 p
+= hexnumstr (p
, addr
);
8085 xsnprintf (p
, endbuf
- p
, ",%d", bpsize
);
8087 if (remote_supports_cond_breakpoints (ops
))
8088 remote_add_target_side_condition (gdbarch
, bp_tgt
, p
, endbuf
);
8090 if (remote_can_run_breakpoint_commands (ops
))
8091 remote_add_target_side_commands (gdbarch
, bp_tgt
, p
);
8094 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8096 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
]))
8101 bp_tgt
->placed_address
= addr
;
8102 bp_tgt
->placed_size
= bpsize
;
8104 case PACKET_UNKNOWN
:
8109 /* If this breakpoint has target-side commands but this stub doesn't
8110 support Z0 packets, throw error. */
8111 if (!VEC_empty (agent_expr_p
, bp_tgt
->tcommands
))
8112 throw_error (NOT_SUPPORTED_ERROR
, _("\
8113 Target doesn't support breakpoints that have target side commands."));
8115 return memory_insert_breakpoint (ops
, gdbarch
, bp_tgt
);
8119 remote_remove_breakpoint (struct target_ops
*ops
,
8120 struct gdbarch
*gdbarch
,
8121 struct bp_target_info
*bp_tgt
)
8123 CORE_ADDR addr
= bp_tgt
->placed_address
;
8124 struct remote_state
*rs
= get_remote_state ();
8126 if (remote_protocol_packets
[PACKET_Z0
].support
!= PACKET_DISABLE
)
8129 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
8131 /* Make sure the remote is pointing at the right process, if
8133 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
8134 set_general_process ();
8140 addr
= (ULONGEST
) remote_address_masked (bp_tgt
->placed_address
);
8141 p
+= hexnumstr (p
, addr
);
8142 xsnprintf (p
, endbuf
- p
, ",%d", bp_tgt
->placed_size
);
8145 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8147 return (rs
->buf
[0] == 'E');
8150 return memory_remove_breakpoint (ops
, gdbarch
, bp_tgt
);
8154 watchpoint_to_Z_packet (int type
)
8159 return Z_PACKET_WRITE_WP
;
8162 return Z_PACKET_READ_WP
;
8165 return Z_PACKET_ACCESS_WP
;
8168 internal_error (__FILE__
, __LINE__
,
8169 _("hw_bp_to_z: bad watchpoint type %d"), type
);
8174 remote_insert_watchpoint (struct target_ops
*self
,
8175 CORE_ADDR addr
, int len
, int type
,
8176 struct expression
*cond
)
8178 struct remote_state
*rs
= get_remote_state ();
8179 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
8181 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
8183 if (remote_protocol_packets
[PACKET_Z0
+ packet
].support
== PACKET_DISABLE
)
8186 /* Make sure the remote is pointing at the right process, if
8188 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
8189 set_general_process ();
8191 xsnprintf (rs
->buf
, endbuf
- rs
->buf
, "Z%x,", packet
);
8192 p
= strchr (rs
->buf
, '\0');
8193 addr
= remote_address_masked (addr
);
8194 p
+= hexnumstr (p
, (ULONGEST
) addr
);
8195 xsnprintf (p
, endbuf
- p
, ",%x", len
);
8198 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8200 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
+ packet
]))
8204 case PACKET_UNKNOWN
:
8209 internal_error (__FILE__
, __LINE__
,
8210 _("remote_insert_watchpoint: reached end of function"));
8214 remote_watchpoint_addr_within_range (struct target_ops
*target
, CORE_ADDR addr
,
8215 CORE_ADDR start
, int length
)
8217 CORE_ADDR diff
= remote_address_masked (addr
- start
);
8219 return diff
< length
;
8224 remote_remove_watchpoint (struct target_ops
*self
,
8225 CORE_ADDR addr
, int len
, int type
,
8226 struct expression
*cond
)
8228 struct remote_state
*rs
= get_remote_state ();
8229 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
8231 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
8233 if (remote_protocol_packets
[PACKET_Z0
+ packet
].support
== PACKET_DISABLE
)
8236 /* Make sure the remote is pointing at the right process, if
8238 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
8239 set_general_process ();
8241 xsnprintf (rs
->buf
, endbuf
- rs
->buf
, "z%x,", packet
);
8242 p
= strchr (rs
->buf
, '\0');
8243 addr
= remote_address_masked (addr
);
8244 p
+= hexnumstr (p
, (ULONGEST
) addr
);
8245 xsnprintf (p
, endbuf
- p
, ",%x", len
);
8247 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8249 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
+ packet
]))
8252 case PACKET_UNKNOWN
:
8257 internal_error (__FILE__
, __LINE__
,
8258 _("remote_remove_watchpoint: reached end of function"));
8262 int remote_hw_watchpoint_limit
= -1;
8263 int remote_hw_watchpoint_length_limit
= -1;
8264 int remote_hw_breakpoint_limit
= -1;
8267 remote_region_ok_for_hw_watchpoint (struct target_ops
*self
,
8268 CORE_ADDR addr
, int len
)
8270 if (remote_hw_watchpoint_length_limit
== 0)
8272 else if (remote_hw_watchpoint_length_limit
< 0)
8274 else if (len
<= remote_hw_watchpoint_length_limit
)
8281 remote_check_watch_resources (struct target_ops
*self
,
8282 int type
, int cnt
, int ot
)
8284 if (type
== bp_hardware_breakpoint
)
8286 if (remote_hw_breakpoint_limit
== 0)
8288 else if (remote_hw_breakpoint_limit
< 0)
8290 else if (cnt
<= remote_hw_breakpoint_limit
)
8295 if (remote_hw_watchpoint_limit
== 0)
8297 else if (remote_hw_watchpoint_limit
< 0)
8301 else if (cnt
<= remote_hw_watchpoint_limit
)
8308 remote_stopped_by_watchpoint (struct target_ops
*ops
)
8310 struct remote_state
*rs
= get_remote_state ();
8312 return rs
->remote_stopped_by_watchpoint_p
;
8316 remote_stopped_data_address (struct target_ops
*target
, CORE_ADDR
*addr_p
)
8318 struct remote_state
*rs
= get_remote_state ();
8321 if (remote_stopped_by_watchpoint (target
))
8323 *addr_p
= rs
->remote_watch_data_address
;
8332 remote_insert_hw_breakpoint (struct target_ops
*self
, struct gdbarch
*gdbarch
,
8333 struct bp_target_info
*bp_tgt
)
8336 struct remote_state
*rs
;
8340 /* The length field should be set to the size of a breakpoint
8341 instruction, even though we aren't inserting one ourselves. */
8343 gdbarch_remote_breakpoint_from_pc
8344 (gdbarch
, &bp_tgt
->placed_address
, &bp_tgt
->placed_size
);
8346 if (remote_protocol_packets
[PACKET_Z1
].support
== PACKET_DISABLE
)
8349 /* Make sure the remote is pointing at the right process, if
8351 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
8352 set_general_process ();
8354 rs
= get_remote_state ();
8356 endbuf
= rs
->buf
+ get_remote_packet_size ();
8362 addr
= remote_address_masked (bp_tgt
->placed_address
);
8363 p
+= hexnumstr (p
, (ULONGEST
) addr
);
8364 xsnprintf (p
, endbuf
- p
, ",%x", bp_tgt
->placed_size
);
8366 if (remote_supports_cond_breakpoints (self
))
8367 remote_add_target_side_condition (gdbarch
, bp_tgt
, p
, endbuf
);
8369 if (remote_can_run_breakpoint_commands (self
))
8370 remote_add_target_side_commands (gdbarch
, bp_tgt
, p
);
8373 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8375 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z1
]))
8378 if (rs
->buf
[1] == '.')
8380 message
= strchr (rs
->buf
+ 2, '.');
8382 error (_("Remote failure reply: %s"), message
+ 1);
8385 case PACKET_UNKNOWN
:
8390 internal_error (__FILE__
, __LINE__
,
8391 _("remote_insert_hw_breakpoint: reached end of function"));
8396 remote_remove_hw_breakpoint (struct target_ops
*self
, struct gdbarch
*gdbarch
,
8397 struct bp_target_info
*bp_tgt
)
8400 struct remote_state
*rs
= get_remote_state ();
8402 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
8404 if (remote_protocol_packets
[PACKET_Z1
].support
== PACKET_DISABLE
)
8407 /* Make sure the remote is pointing at the right process, if
8409 if (!gdbarch_has_global_breakpoints (target_gdbarch ()))
8410 set_general_process ();
8416 addr
= remote_address_masked (bp_tgt
->placed_address
);
8417 p
+= hexnumstr (p
, (ULONGEST
) addr
);
8418 xsnprintf (p
, endbuf
- p
, ",%x", bp_tgt
->placed_size
);
8421 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8423 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z1
]))
8426 case PACKET_UNKNOWN
:
8431 internal_error (__FILE__
, __LINE__
,
8432 _("remote_remove_hw_breakpoint: reached end of function"));
8435 /* Verify memory using the "qCRC:" request. */
8438 remote_verify_memory (struct target_ops
*ops
,
8439 const gdb_byte
*data
, CORE_ADDR lma
, ULONGEST size
)
8441 struct remote_state
*rs
= get_remote_state ();
8442 unsigned long host_crc
, target_crc
;
8445 /* Make sure the remote is pointing at the right process. */
8446 set_general_process ();
8448 /* FIXME: assumes lma can fit into long. */
8449 xsnprintf (rs
->buf
, get_remote_packet_size (), "qCRC:%lx,%lx",
8450 (long) lma
, (long) size
);
8453 /* Be clever; compute the host_crc before waiting for target
8455 host_crc
= xcrc32 (data
, size
, 0xffffffff);
8457 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8458 if (rs
->buf
[0] == 'E')
8461 if (rs
->buf
[0] != 'C')
8462 error (_("remote target does not support this operation"));
8464 for (target_crc
= 0, tmp
= &rs
->buf
[1]; *tmp
; tmp
++)
8465 target_crc
= target_crc
* 16 + fromhex (*tmp
);
8467 return (host_crc
== target_crc
);
8470 /* compare-sections command
8472 With no arguments, compares each loadable section in the exec bfd
8473 with the same memory range on the target, and reports mismatches.
8474 Useful for verifying the image on the target against the exec file. */
8477 compare_sections_command (char *args
, int from_tty
)
8480 struct cleanup
*old_chain
;
8482 const char *sectname
;
8490 error (_("command cannot be used without an exec file"));
8492 /* Make sure the remote is pointing at the right process. */
8493 set_general_process ();
8495 for (s
= exec_bfd
->sections
; s
; s
= s
->next
)
8497 if (!(s
->flags
& SEC_LOAD
))
8498 continue; /* Skip non-loadable section. */
8500 size
= bfd_get_section_size (s
);
8502 continue; /* Skip zero-length section. */
8504 sectname
= bfd_get_section_name (exec_bfd
, s
);
8505 if (args
&& strcmp (args
, sectname
) != 0)
8506 continue; /* Not the section selected by user. */
8508 matched
= 1; /* Do this section. */
8511 sectdata
= xmalloc (size
);
8512 old_chain
= make_cleanup (xfree
, sectdata
);
8513 bfd_get_section_contents (exec_bfd
, s
, sectdata
, 0, size
);
8515 res
= target_verify_memory (sectdata
, lma
, size
);
8518 error (_("target memory fault, section %s, range %s -- %s"), sectname
,
8519 paddress (target_gdbarch (), lma
),
8520 paddress (target_gdbarch (), lma
+ size
));
8522 printf_filtered ("Section %s, range %s -- %s: ", sectname
,
8523 paddress (target_gdbarch (), lma
),
8524 paddress (target_gdbarch (), lma
+ size
));
8526 printf_filtered ("matched.\n");
8529 printf_filtered ("MIS-MATCHED!\n");
8533 do_cleanups (old_chain
);
8536 warning (_("One or more sections of the remote executable does not match\n\
8537 the loaded file\n"));
8538 if (args
&& !matched
)
8539 printf_filtered (_("No loaded section named '%s'.\n"), args
);
8542 /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET
8543 into remote target. The number of bytes written to the remote
8544 target is returned, or -1 for error. */
8546 static enum target_xfer_status
8547 remote_write_qxfer (struct target_ops
*ops
, const char *object_name
,
8548 const char *annex
, const gdb_byte
*writebuf
,
8549 ULONGEST offset
, LONGEST len
, ULONGEST
*xfered_len
,
8550 struct packet_config
*packet
)
8554 struct remote_state
*rs
= get_remote_state ();
8555 int max_size
= get_memory_write_packet_size ();
8557 if (packet
->support
== PACKET_DISABLE
)
8558 return TARGET_XFER_E_IO
;
8560 /* Insert header. */
8561 i
= snprintf (rs
->buf
, max_size
,
8562 "qXfer:%s:write:%s:%s:",
8563 object_name
, annex
? annex
: "",
8564 phex_nz (offset
, sizeof offset
));
8565 max_size
-= (i
+ 1);
8567 /* Escape as much data as fits into rs->buf. */
8568 buf_len
= remote_escape_output
8569 (writebuf
, len
, (gdb_byte
*) rs
->buf
+ i
, &max_size
, max_size
);
8571 if (putpkt_binary (rs
->buf
, i
+ buf_len
) < 0
8572 || getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) < 0
8573 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
8574 return TARGET_XFER_E_IO
;
8576 unpack_varlen_hex (rs
->buf
, &n
);
8579 return TARGET_XFER_OK
;
8582 /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet.
8583 Data at OFFSET, of up to LEN bytes, is read into READBUF; the
8584 number of bytes read is returned, or 0 for EOF, or -1 for error.
8585 The number of bytes read may be less than LEN without indicating an
8586 EOF. PACKET is checked and updated to indicate whether the remote
8587 target supports this object. */
8589 static enum target_xfer_status
8590 remote_read_qxfer (struct target_ops
*ops
, const char *object_name
,
8592 gdb_byte
*readbuf
, ULONGEST offset
, LONGEST len
,
8593 ULONGEST
*xfered_len
,
8594 struct packet_config
*packet
)
8596 struct remote_state
*rs
= get_remote_state ();
8597 LONGEST i
, n
, packet_len
;
8599 if (packet
->support
== PACKET_DISABLE
)
8600 return TARGET_XFER_E_IO
;
8602 /* Check whether we've cached an end-of-object packet that matches
8604 if (rs
->finished_object
)
8606 if (strcmp (object_name
, rs
->finished_object
) == 0
8607 && strcmp (annex
? annex
: "", rs
->finished_annex
) == 0
8608 && offset
== rs
->finished_offset
)
8609 return TARGET_XFER_EOF
;
8612 /* Otherwise, we're now reading something different. Discard
8614 xfree (rs
->finished_object
);
8615 xfree (rs
->finished_annex
);
8616 rs
->finished_object
= NULL
;
8617 rs
->finished_annex
= NULL
;
8620 /* Request only enough to fit in a single packet. The actual data
8621 may not, since we don't know how much of it will need to be escaped;
8622 the target is free to respond with slightly less data. We subtract
8623 five to account for the response type and the protocol frame. */
8624 n
= min (get_remote_packet_size () - 5, len
);
8625 snprintf (rs
->buf
, get_remote_packet_size () - 4, "qXfer:%s:read:%s:%s,%s",
8626 object_name
, annex
? annex
: "",
8627 phex_nz (offset
, sizeof offset
),
8628 phex_nz (n
, sizeof n
));
8629 i
= putpkt (rs
->buf
);
8631 return TARGET_XFER_E_IO
;
8634 packet_len
= getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0);
8635 if (packet_len
< 0 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
8636 return TARGET_XFER_E_IO
;
8638 if (rs
->buf
[0] != 'l' && rs
->buf
[0] != 'm')
8639 error (_("Unknown remote qXfer reply: %s"), rs
->buf
);
8641 /* 'm' means there is (or at least might be) more data after this
8642 batch. That does not make sense unless there's at least one byte
8643 of data in this reply. */
8644 if (rs
->buf
[0] == 'm' && packet_len
== 1)
8645 error (_("Remote qXfer reply contained no data."));
8647 /* Got some data. */
8648 i
= remote_unescape_input ((gdb_byte
*) rs
->buf
+ 1,
8649 packet_len
- 1, readbuf
, n
);
8651 /* 'l' is an EOF marker, possibly including a final block of data,
8652 or possibly empty. If we have the final block of a non-empty
8653 object, record this fact to bypass a subsequent partial read. */
8654 if (rs
->buf
[0] == 'l' && offset
+ i
> 0)
8656 rs
->finished_object
= xstrdup (object_name
);
8657 rs
->finished_annex
= xstrdup (annex
? annex
: "");
8658 rs
->finished_offset
= offset
+ i
;
8662 return TARGET_XFER_EOF
;
8666 return TARGET_XFER_OK
;
8670 static enum target_xfer_status
8671 remote_xfer_partial (struct target_ops
*ops
, enum target_object object
,
8672 const char *annex
, gdb_byte
*readbuf
,
8673 const gdb_byte
*writebuf
, ULONGEST offset
, ULONGEST len
,
8674 ULONGEST
*xfered_len
)
8676 struct remote_state
*rs
;
8681 set_remote_traceframe ();
8682 set_general_thread (inferior_ptid
);
8684 rs
= get_remote_state ();
8686 /* Handle memory using the standard memory routines. */
8687 if (object
== TARGET_OBJECT_MEMORY
)
8689 /* If the remote target is connected but not running, we should
8690 pass this request down to a lower stratum (e.g. the executable
8692 if (!target_has_execution
)
8693 return TARGET_XFER_EOF
;
8695 if (writebuf
!= NULL
)
8696 return remote_write_bytes (offset
, writebuf
, len
, xfered_len
);
8698 return remote_read_bytes (offset
, readbuf
, len
, xfered_len
);
8701 /* Handle SPU memory using qxfer packets. */
8702 if (object
== TARGET_OBJECT_SPU
)
8705 return remote_read_qxfer (ops
, "spu", annex
, readbuf
, offset
, len
,
8706 xfered_len
, &remote_protocol_packets
8707 [PACKET_qXfer_spu_read
]);
8709 return remote_write_qxfer (ops
, "spu", annex
, writebuf
, offset
, len
,
8710 xfered_len
, &remote_protocol_packets
8711 [PACKET_qXfer_spu_write
]);
8714 /* Handle extra signal info using qxfer packets. */
8715 if (object
== TARGET_OBJECT_SIGNAL_INFO
)
8718 return remote_read_qxfer (ops
, "siginfo", annex
, readbuf
, offset
, len
,
8719 xfered_len
, &remote_protocol_packets
8720 [PACKET_qXfer_siginfo_read
]);
8722 return remote_write_qxfer (ops
, "siginfo", annex
,
8723 writebuf
, offset
, len
, xfered_len
,
8724 &remote_protocol_packets
8725 [PACKET_qXfer_siginfo_write
]);
8728 if (object
== TARGET_OBJECT_STATIC_TRACE_DATA
)
8731 return remote_read_qxfer (ops
, "statictrace", annex
,
8732 readbuf
, offset
, len
, xfered_len
,
8733 &remote_protocol_packets
8734 [PACKET_qXfer_statictrace_read
]);
8736 return TARGET_XFER_E_IO
;
8739 /* Only handle flash writes. */
8740 if (writebuf
!= NULL
)
8746 case TARGET_OBJECT_FLASH
:
8747 return remote_flash_write (ops
, offset
, len
, xfered_len
,
8751 return TARGET_XFER_E_IO
;
8755 /* Map pre-existing objects onto letters. DO NOT do this for new
8756 objects!!! Instead specify new query packets. */
8759 case TARGET_OBJECT_AVR
:
8763 case TARGET_OBJECT_AUXV
:
8764 gdb_assert (annex
== NULL
);
8765 return remote_read_qxfer (ops
, "auxv", annex
, readbuf
, offset
, len
,
8767 &remote_protocol_packets
[PACKET_qXfer_auxv
]);
8769 case TARGET_OBJECT_AVAILABLE_FEATURES
:
8770 return remote_read_qxfer
8771 (ops
, "features", annex
, readbuf
, offset
, len
, xfered_len
,
8772 &remote_protocol_packets
[PACKET_qXfer_features
]);
8774 case TARGET_OBJECT_LIBRARIES
:
8775 return remote_read_qxfer
8776 (ops
, "libraries", annex
, readbuf
, offset
, len
, xfered_len
,
8777 &remote_protocol_packets
[PACKET_qXfer_libraries
]);
8779 case TARGET_OBJECT_LIBRARIES_SVR4
:
8780 return remote_read_qxfer
8781 (ops
, "libraries-svr4", annex
, readbuf
, offset
, len
, xfered_len
,
8782 &remote_protocol_packets
[PACKET_qXfer_libraries_svr4
]);
8784 case TARGET_OBJECT_MEMORY_MAP
:
8785 gdb_assert (annex
== NULL
);
8786 return remote_read_qxfer (ops
, "memory-map", annex
, readbuf
, offset
, len
,
8788 &remote_protocol_packets
[PACKET_qXfer_memory_map
]);
8790 case TARGET_OBJECT_OSDATA
:
8791 /* Should only get here if we're connected. */
8792 gdb_assert (rs
->remote_desc
);
8793 return remote_read_qxfer
8794 (ops
, "osdata", annex
, readbuf
, offset
, len
, xfered_len
,
8795 &remote_protocol_packets
[PACKET_qXfer_osdata
]);
8797 case TARGET_OBJECT_THREADS
:
8798 gdb_assert (annex
== NULL
);
8799 return remote_read_qxfer (ops
, "threads", annex
, readbuf
, offset
, len
,
8801 &remote_protocol_packets
[PACKET_qXfer_threads
]);
8803 case TARGET_OBJECT_TRACEFRAME_INFO
:
8804 gdb_assert (annex
== NULL
);
8805 return remote_read_qxfer
8806 (ops
, "traceframe-info", annex
, readbuf
, offset
, len
, xfered_len
,
8807 &remote_protocol_packets
[PACKET_qXfer_traceframe_info
]);
8809 case TARGET_OBJECT_FDPIC
:
8810 return remote_read_qxfer (ops
, "fdpic", annex
, readbuf
, offset
, len
,
8812 &remote_protocol_packets
[PACKET_qXfer_fdpic
]);
8814 case TARGET_OBJECT_OPENVMS_UIB
:
8815 return remote_read_qxfer (ops
, "uib", annex
, readbuf
, offset
, len
,
8817 &remote_protocol_packets
[PACKET_qXfer_uib
]);
8819 case TARGET_OBJECT_BTRACE
:
8820 return remote_read_qxfer (ops
, "btrace", annex
, readbuf
, offset
, len
,
8822 &remote_protocol_packets
[PACKET_qXfer_btrace
]);
8825 return TARGET_XFER_E_IO
;
8828 /* Note: a zero OFFSET and LEN can be used to query the minimum
8830 if (offset
== 0 && len
== 0)
8831 return (get_remote_packet_size ());
8832 /* Minimum outbuf size is get_remote_packet_size (). If LEN is not
8833 large enough let the caller deal with it. */
8834 if (len
< get_remote_packet_size ())
8835 return TARGET_XFER_E_IO
;
8836 len
= get_remote_packet_size ();
8838 /* Except for querying the minimum buffer size, target must be open. */
8839 if (!rs
->remote_desc
)
8840 error (_("remote query is only available after target open"));
8842 gdb_assert (annex
!= NULL
);
8843 gdb_assert (readbuf
!= NULL
);
8849 /* We used one buffer char for the remote protocol q command and
8850 another for the query type. As the remote protocol encapsulation
8851 uses 4 chars plus one extra in case we are debugging
8852 (remote_debug), we have PBUFZIZ - 7 left to pack the query
8855 while (annex
[i
] && (i
< (get_remote_packet_size () - 8)))
8857 /* Bad caller may have sent forbidden characters. */
8858 gdb_assert (isprint (annex
[i
]) && annex
[i
] != '$' && annex
[i
] != '#');
8863 gdb_assert (annex
[i
] == '\0');
8865 i
= putpkt (rs
->buf
);
8867 return TARGET_XFER_E_IO
;
8869 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8870 strcpy ((char *) readbuf
, rs
->buf
);
8872 *xfered_len
= strlen ((char *) readbuf
);
8873 return TARGET_XFER_OK
;
8877 remote_search_memory (struct target_ops
* ops
,
8878 CORE_ADDR start_addr
, ULONGEST search_space_len
,
8879 const gdb_byte
*pattern
, ULONGEST pattern_len
,
8880 CORE_ADDR
*found_addrp
)
8882 int addr_size
= gdbarch_addr_bit (target_gdbarch ()) / 8;
8883 struct remote_state
*rs
= get_remote_state ();
8884 int max_size
= get_memory_write_packet_size ();
8885 struct packet_config
*packet
=
8886 &remote_protocol_packets
[PACKET_qSearch_memory
];
8887 /* Number of packet bytes used to encode the pattern;
8888 this could be more than PATTERN_LEN due to escape characters. */
8889 int escaped_pattern_len
;
8890 /* Amount of pattern that was encodable in the packet. */
8891 int used_pattern_len
;
8894 ULONGEST found_addr
;
8896 /* Don't go to the target if we don't have to.
8897 This is done before checking packet->support to avoid the possibility that
8898 a success for this edge case means the facility works in general. */
8899 if (pattern_len
> search_space_len
)
8901 if (pattern_len
== 0)
8903 *found_addrp
= start_addr
;
8907 /* If we already know the packet isn't supported, fall back to the simple
8908 way of searching memory. */
8910 if (packet
->support
== PACKET_DISABLE
)
8912 /* Target doesn't provided special support, fall back and use the
8913 standard support (copy memory and do the search here). */
8914 return simple_search_memory (ops
, start_addr
, search_space_len
,
8915 pattern
, pattern_len
, found_addrp
);
8918 /* Make sure the remote is pointing at the right process. */
8919 set_general_process ();
8921 /* Insert header. */
8922 i
= snprintf (rs
->buf
, max_size
,
8923 "qSearch:memory:%s;%s;",
8924 phex_nz (start_addr
, addr_size
),
8925 phex_nz (search_space_len
, sizeof (search_space_len
)));
8926 max_size
-= (i
+ 1);
8928 /* Escape as much data as fits into rs->buf. */
8929 escaped_pattern_len
=
8930 remote_escape_output (pattern
, pattern_len
, (gdb_byte
*) rs
->buf
+ i
,
8931 &used_pattern_len
, max_size
);
8933 /* Bail if the pattern is too large. */
8934 if (used_pattern_len
!= pattern_len
)
8935 error (_("Pattern is too large to transmit to remote target."));
8937 if (putpkt_binary (rs
->buf
, i
+ escaped_pattern_len
) < 0
8938 || getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) < 0
8939 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
8941 /* The request may not have worked because the command is not
8942 supported. If so, fall back to the simple way. */
8943 if (packet
->support
== PACKET_DISABLE
)
8945 return simple_search_memory (ops
, start_addr
, search_space_len
,
8946 pattern
, pattern_len
, found_addrp
);
8951 if (rs
->buf
[0] == '0')
8953 else if (rs
->buf
[0] == '1')
8956 if (rs
->buf
[1] != ',')
8957 error (_("Unknown qSearch:memory reply: %s"), rs
->buf
);
8958 unpack_varlen_hex (rs
->buf
+ 2, &found_addr
);
8959 *found_addrp
= found_addr
;
8962 error (_("Unknown qSearch:memory reply: %s"), rs
->buf
);
8968 remote_rcmd (struct target_ops
*self
, char *command
,
8969 struct ui_file
*outbuf
)
8971 struct remote_state
*rs
= get_remote_state ();
8974 if (!rs
->remote_desc
)
8975 error (_("remote rcmd is only available after target open"));
8977 /* Send a NULL command across as an empty command. */
8978 if (command
== NULL
)
8981 /* The query prefix. */
8982 strcpy (rs
->buf
, "qRcmd,");
8983 p
= strchr (rs
->buf
, '\0');
8985 if ((strlen (rs
->buf
) + strlen (command
) * 2 + 8/*misc*/)
8986 > get_remote_packet_size ())
8987 error (_("\"monitor\" command ``%s'' is too long."), command
);
8989 /* Encode the actual command. */
8990 bin2hex ((gdb_byte
*) command
, p
, strlen (command
));
8992 if (putpkt (rs
->buf
) < 0)
8993 error (_("Communication problem with target."));
8995 /* get/display the response */
9000 /* XXX - see also remote_get_noisy_reply(). */
9001 QUIT
; /* Allow user to bail out with ^C. */
9003 if (getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) == -1)
9005 /* Timeout. Continue to (try to) read responses.
9006 This is better than stopping with an error, assuming the stub
9007 is still executing the (long) monitor command.
9008 If needed, the user can interrupt gdb using C-c, obtaining
9009 an effect similar to stop on timeout. */
9014 error (_("Target does not support this command."));
9015 if (buf
[0] == 'O' && buf
[1] != 'K')
9017 remote_console_output (buf
+ 1); /* 'O' message from stub. */
9020 if (strcmp (buf
, "OK") == 0)
9022 if (strlen (buf
) == 3 && buf
[0] == 'E'
9023 && isdigit (buf
[1]) && isdigit (buf
[2]))
9025 error (_("Protocol error with Rcmd"));
9027 for (p
= buf
; p
[0] != '\0' && p
[1] != '\0'; p
+= 2)
9029 char c
= (fromhex (p
[0]) << 4) + fromhex (p
[1]);
9031 fputc_unfiltered (c
, outbuf
);
9037 static VEC(mem_region_s
) *
9038 remote_memory_map (struct target_ops
*ops
)
9040 VEC(mem_region_s
) *result
= NULL
;
9041 char *text
= target_read_stralloc (¤t_target
,
9042 TARGET_OBJECT_MEMORY_MAP
, NULL
);
9046 struct cleanup
*back_to
= make_cleanup (xfree
, text
);
9048 result
= parse_memory_map (text
);
9049 do_cleanups (back_to
);
9056 packet_command (char *args
, int from_tty
)
9058 struct remote_state
*rs
= get_remote_state ();
9060 if (!rs
->remote_desc
)
9061 error (_("command can only be used with remote target"));
9064 error (_("remote-packet command requires packet text as argument"));
9066 puts_filtered ("sending: ");
9067 print_packet (args
);
9068 puts_filtered ("\n");
9071 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9072 puts_filtered ("received: ");
9073 print_packet (rs
->buf
);
9074 puts_filtered ("\n");
9078 /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */
9080 static void display_thread_info (struct gdb_ext_thread_info
*info
);
9082 static void threadset_test_cmd (char *cmd
, int tty
);
9084 static void threadalive_test (char *cmd
, int tty
);
9086 static void threadlist_test_cmd (char *cmd
, int tty
);
9088 int get_and_display_threadinfo (threadref
*ref
);
9090 static void threadinfo_test_cmd (char *cmd
, int tty
);
9092 static int thread_display_step (threadref
*ref
, void *context
);
9094 static void threadlist_update_test_cmd (char *cmd
, int tty
);
9096 static void init_remote_threadtests (void);
9098 #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */
9101 threadset_test_cmd (char *cmd
, int tty
)
9103 int sample_thread
= SAMPLE_THREAD
;
9105 printf_filtered (_("Remote threadset test\n"));
9106 set_general_thread (sample_thread
);
9111 threadalive_test (char *cmd
, int tty
)
9113 int sample_thread
= SAMPLE_THREAD
;
9114 int pid
= ptid_get_pid (inferior_ptid
);
9115 ptid_t ptid
= ptid_build (pid
, 0, sample_thread
);
9117 if (remote_thread_alive (ptid
))
9118 printf_filtered ("PASS: Thread alive test\n");
9120 printf_filtered ("FAIL: Thread alive test\n");
9123 void output_threadid (char *title
, threadref
*ref
);
9126 output_threadid (char *title
, threadref
*ref
)
9130 pack_threadid (&hexid
[0], ref
); /* Convert threead id into hex. */
9132 printf_filtered ("%s %s\n", title
, (&hexid
[0]));
9136 threadlist_test_cmd (char *cmd
, int tty
)
9139 threadref nextthread
;
9140 int done
, result_count
;
9141 threadref threadlist
[3];
9143 printf_filtered ("Remote Threadlist test\n");
9144 if (!remote_get_threadlist (startflag
, &nextthread
, 3, &done
,
9145 &result_count
, &threadlist
[0]))
9146 printf_filtered ("FAIL: threadlist test\n");
9149 threadref
*scan
= threadlist
;
9150 threadref
*limit
= scan
+ result_count
;
9152 while (scan
< limit
)
9153 output_threadid (" thread ", scan
++);
9158 display_thread_info (struct gdb_ext_thread_info
*info
)
9160 output_threadid ("Threadid: ", &info
->threadid
);
9161 printf_filtered ("Name: %s\n ", info
->shortname
);
9162 printf_filtered ("State: %s\n", info
->display
);
9163 printf_filtered ("other: %s\n\n", info
->more_display
);
9167 get_and_display_threadinfo (threadref
*ref
)
9171 struct gdb_ext_thread_info threadinfo
;
9173 set
= TAG_THREADID
| TAG_EXISTS
| TAG_THREADNAME
9174 | TAG_MOREDISPLAY
| TAG_DISPLAY
;
9175 if (0 != (result
= remote_get_threadinfo (ref
, set
, &threadinfo
)))
9176 display_thread_info (&threadinfo
);
9181 threadinfo_test_cmd (char *cmd
, int tty
)
9183 int athread
= SAMPLE_THREAD
;
9187 int_to_threadref (&thread
, athread
);
9188 printf_filtered ("Remote Threadinfo test\n");
9189 if (!get_and_display_threadinfo (&thread
))
9190 printf_filtered ("FAIL cannot get thread info\n");
9194 thread_display_step (threadref
*ref
, void *context
)
9196 /* output_threadid(" threadstep ",ref); *//* simple test */
9197 return get_and_display_threadinfo (ref
);
9201 threadlist_update_test_cmd (char *cmd
, int tty
)
9203 printf_filtered ("Remote Threadlist update test\n");
9204 remote_threadlist_iterator (thread_display_step
, 0, CRAZY_MAX_THREADS
);
9208 init_remote_threadtests (void)
9210 add_com ("tlist", class_obscure
, threadlist_test_cmd
,
9211 _("Fetch and print the remote list of "
9212 "thread identifiers, one pkt only"));
9213 add_com ("tinfo", class_obscure
, threadinfo_test_cmd
,
9214 _("Fetch and display info about one thread"));
9215 add_com ("tset", class_obscure
, threadset_test_cmd
,
9216 _("Test setting to a different thread"));
9217 add_com ("tupd", class_obscure
, threadlist_update_test_cmd
,
9218 _("Iterate through updating all remote thread info"));
9219 add_com ("talive", class_obscure
, threadalive_test
,
9220 _(" Remote thread alive test "));
9225 /* Convert a thread ID to a string. Returns the string in a static
9229 remote_pid_to_str (struct target_ops
*ops
, ptid_t ptid
)
9231 static char buf
[64];
9232 struct remote_state
*rs
= get_remote_state ();
9234 if (ptid_equal (ptid
, null_ptid
))
9235 return normal_pid_to_str (ptid
);
9236 else if (ptid_is_pid (ptid
))
9238 /* Printing an inferior target id. */
9240 /* When multi-process extensions are off, there's no way in the
9241 remote protocol to know the remote process id, if there's any
9242 at all. There's one exception --- when we're connected with
9243 target extended-remote, and we manually attached to a process
9244 with "attach PID". We don't record anywhere a flag that
9245 allows us to distinguish that case from the case of
9246 connecting with extended-remote and the stub already being
9247 attached to a process, and reporting yes to qAttached, hence
9248 no smart special casing here. */
9249 if (!remote_multi_process_p (rs
))
9251 xsnprintf (buf
, sizeof buf
, "Remote target");
9255 return normal_pid_to_str (ptid
);
9259 if (ptid_equal (magic_null_ptid
, ptid
))
9260 xsnprintf (buf
, sizeof buf
, "Thread <main>");
9261 else if (rs
->extended
&& remote_multi_process_p (rs
))
9262 xsnprintf (buf
, sizeof buf
, "Thread %d.%ld",
9263 ptid_get_pid (ptid
), ptid_get_tid (ptid
));
9265 xsnprintf (buf
, sizeof buf
, "Thread %ld",
9266 ptid_get_tid (ptid
));
9271 /* Get the address of the thread local variable in OBJFILE which is
9272 stored at OFFSET within the thread local storage for thread PTID. */
9275 remote_get_thread_local_address (struct target_ops
*ops
,
9276 ptid_t ptid
, CORE_ADDR lm
, CORE_ADDR offset
)
9278 if (remote_protocol_packets
[PACKET_qGetTLSAddr
].support
!= PACKET_DISABLE
)
9280 struct remote_state
*rs
= get_remote_state ();
9282 char *endp
= rs
->buf
+ get_remote_packet_size ();
9283 enum packet_result result
;
9285 strcpy (p
, "qGetTLSAddr:");
9287 p
= write_ptid (p
, endp
, ptid
);
9289 p
+= hexnumstr (p
, offset
);
9291 p
+= hexnumstr (p
, lm
);
9295 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9296 result
= packet_ok (rs
->buf
,
9297 &remote_protocol_packets
[PACKET_qGetTLSAddr
]);
9298 if (result
== PACKET_OK
)
9302 unpack_varlen_hex (rs
->buf
, &result
);
9305 else if (result
== PACKET_UNKNOWN
)
9306 throw_error (TLS_GENERIC_ERROR
,
9307 _("Remote target doesn't support qGetTLSAddr packet"));
9309 throw_error (TLS_GENERIC_ERROR
,
9310 _("Remote target failed to process qGetTLSAddr request"));
9313 throw_error (TLS_GENERIC_ERROR
,
9314 _("TLS not supported or disabled on this target"));
9319 /* Provide thread local base, i.e. Thread Information Block address.
9320 Returns 1 if ptid is found and thread_local_base is non zero. */
9323 remote_get_tib_address (ptid_t ptid
, CORE_ADDR
*addr
)
9325 if (remote_protocol_packets
[PACKET_qGetTIBAddr
].support
!= PACKET_DISABLE
)
9327 struct remote_state
*rs
= get_remote_state ();
9329 char *endp
= rs
->buf
+ get_remote_packet_size ();
9330 enum packet_result result
;
9332 strcpy (p
, "qGetTIBAddr:");
9334 p
= write_ptid (p
, endp
, ptid
);
9338 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
9339 result
= packet_ok (rs
->buf
,
9340 &remote_protocol_packets
[PACKET_qGetTIBAddr
]);
9341 if (result
== PACKET_OK
)
9345 unpack_varlen_hex (rs
->buf
, &result
);
9347 *addr
= (CORE_ADDR
) result
;
9350 else if (result
== PACKET_UNKNOWN
)
9351 error (_("Remote target doesn't support qGetTIBAddr packet"));
9353 error (_("Remote target failed to process qGetTIBAddr request"));
9356 error (_("qGetTIBAddr not supported or disabled on this target"));
9361 /* Support for inferring a target description based on the current
9362 architecture and the size of a 'g' packet. While the 'g' packet
9363 can have any size (since optional registers can be left off the
9364 end), some sizes are easily recognizable given knowledge of the
9365 approximate architecture. */
9367 struct remote_g_packet_guess
9370 const struct target_desc
*tdesc
;
9372 typedef struct remote_g_packet_guess remote_g_packet_guess_s
;
9373 DEF_VEC_O(remote_g_packet_guess_s
);
9375 struct remote_g_packet_data
9377 VEC(remote_g_packet_guess_s
) *guesses
;
9380 static struct gdbarch_data
*remote_g_packet_data_handle
;
9383 remote_g_packet_data_init (struct obstack
*obstack
)
9385 return OBSTACK_ZALLOC (obstack
, struct remote_g_packet_data
);
9389 register_remote_g_packet_guess (struct gdbarch
*gdbarch
, int bytes
,
9390 const struct target_desc
*tdesc
)
9392 struct remote_g_packet_data
*data
9393 = gdbarch_data (gdbarch
, remote_g_packet_data_handle
);
9394 struct remote_g_packet_guess new_guess
, *guess
;
9397 gdb_assert (tdesc
!= NULL
);
9400 VEC_iterate (remote_g_packet_guess_s
, data
->guesses
, ix
, guess
);
9402 if (guess
->bytes
== bytes
)
9403 internal_error (__FILE__
, __LINE__
,
9404 _("Duplicate g packet description added for size %d"),
9407 new_guess
.bytes
= bytes
;
9408 new_guess
.tdesc
= tdesc
;
9409 VEC_safe_push (remote_g_packet_guess_s
, data
->guesses
, &new_guess
);
9412 /* Return 1 if remote_read_description would do anything on this target
9413 and architecture, 0 otherwise. */
9416 remote_read_description_p (struct target_ops
*target
)
9418 struct remote_g_packet_data
*data
9419 = gdbarch_data (target_gdbarch (), remote_g_packet_data_handle
);
9421 if (!VEC_empty (remote_g_packet_guess_s
, data
->guesses
))
9427 static const struct target_desc
*
9428 remote_read_description (struct target_ops
*target
)
9430 struct remote_g_packet_data
*data
9431 = gdbarch_data (target_gdbarch (), remote_g_packet_data_handle
);
9433 /* Do not try this during initial connection, when we do not know
9434 whether there is a running but stopped thread. */
9435 if (!target_has_execution
|| ptid_equal (inferior_ptid
, null_ptid
))
9438 if (!VEC_empty (remote_g_packet_guess_s
, data
->guesses
))
9440 struct remote_g_packet_guess
*guess
;
9442 int bytes
= send_g_packet ();
9445 VEC_iterate (remote_g_packet_guess_s
, data
->guesses
, ix
, guess
);
9447 if (guess
->bytes
== bytes
)
9448 return guess
->tdesc
;
9450 /* We discard the g packet. A minor optimization would be to
9451 hold on to it, and fill the register cache once we have selected
9452 an architecture, but it's too tricky to do safely. */
9458 /* Remote file transfer support. This is host-initiated I/O, not
9459 target-initiated; for target-initiated, see remote-fileio.c. */
9461 /* If *LEFT is at least the length of STRING, copy STRING to
9462 *BUFFER, update *BUFFER to point to the new end of the buffer, and
9463 decrease *LEFT. Otherwise raise an error. */
9466 remote_buffer_add_string (char **buffer
, int *left
, char *string
)
9468 int len
= strlen (string
);
9471 error (_("Packet too long for target."));
9473 memcpy (*buffer
, string
, len
);
9477 /* NUL-terminate the buffer as a convenience, if there is
9483 /* If *LEFT is large enough, hex encode LEN bytes from BYTES into
9484 *BUFFER, update *BUFFER to point to the new end of the buffer, and
9485 decrease *LEFT. Otherwise raise an error. */
9488 remote_buffer_add_bytes (char **buffer
, int *left
, const gdb_byte
*bytes
,
9491 if (2 * len
> *left
)
9492 error (_("Packet too long for target."));
9494 bin2hex (bytes
, *buffer
, len
);
9498 /* NUL-terminate the buffer as a convenience, if there is
9504 /* If *LEFT is large enough, convert VALUE to hex and add it to
9505 *BUFFER, update *BUFFER to point to the new end of the buffer, and
9506 decrease *LEFT. Otherwise raise an error. */
9509 remote_buffer_add_int (char **buffer
, int *left
, ULONGEST value
)
9511 int len
= hexnumlen (value
);
9514 error (_("Packet too long for target."));
9516 hexnumstr (*buffer
, value
);
9520 /* NUL-terminate the buffer as a convenience, if there is
9526 /* Parse an I/O result packet from BUFFER. Set RETCODE to the return
9527 value, *REMOTE_ERRNO to the remote error number or zero if none
9528 was included, and *ATTACHMENT to point to the start of the annex
9529 if any. The length of the packet isn't needed here; there may
9530 be NUL bytes in BUFFER, but they will be after *ATTACHMENT.
9532 Return 0 if the packet could be parsed, -1 if it could not. If
9533 -1 is returned, the other variables may not be initialized. */
9536 remote_hostio_parse_result (char *buffer
, int *retcode
,
9537 int *remote_errno
, char **attachment
)
9544 if (buffer
[0] != 'F')
9548 *retcode
= strtol (&buffer
[1], &p
, 16);
9549 if (errno
!= 0 || p
== &buffer
[1])
9552 /* Check for ",errno". */
9556 *remote_errno
= strtol (p
+ 1, &p2
, 16);
9557 if (errno
!= 0 || p
+ 1 == p2
)
9562 /* Check for ";attachment". If there is no attachment, the
9563 packet should end here. */
9566 *attachment
= p
+ 1;
9569 else if (*p
== '\0')
9575 /* Send a prepared I/O packet to the target and read its response.
9576 The prepared packet is in the global RS->BUF before this function
9577 is called, and the answer is there when we return.
9579 COMMAND_BYTES is the length of the request to send, which may include
9580 binary data. WHICH_PACKET is the packet configuration to check
9581 before attempting a packet. If an error occurs, *REMOTE_ERRNO
9582 is set to the error number and -1 is returned. Otherwise the value
9583 returned by the function is returned.
9585 ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an
9586 attachment is expected; an error will be reported if there's a
9587 mismatch. If one is found, *ATTACHMENT will be set to point into
9588 the packet buffer and *ATTACHMENT_LEN will be set to the
9589 attachment's length. */
9592 remote_hostio_send_command (int command_bytes
, int which_packet
,
9593 int *remote_errno
, char **attachment
,
9594 int *attachment_len
)
9596 struct remote_state
*rs
= get_remote_state ();
9597 int ret
, bytes_read
;
9598 char *attachment_tmp
;
9600 if (!rs
->remote_desc
9601 || remote_protocol_packets
[which_packet
].support
== PACKET_DISABLE
)
9603 *remote_errno
= FILEIO_ENOSYS
;
9607 putpkt_binary (rs
->buf
, command_bytes
);
9608 bytes_read
= getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0);
9610 /* If it timed out, something is wrong. Don't try to parse the
9614 *remote_errno
= FILEIO_EINVAL
;
9618 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[which_packet
]))
9621 *remote_errno
= FILEIO_EINVAL
;
9623 case PACKET_UNKNOWN
:
9624 *remote_errno
= FILEIO_ENOSYS
;
9630 if (remote_hostio_parse_result (rs
->buf
, &ret
, remote_errno
,
9633 *remote_errno
= FILEIO_EINVAL
;
9637 /* Make sure we saw an attachment if and only if we expected one. */
9638 if ((attachment_tmp
== NULL
&& attachment
!= NULL
)
9639 || (attachment_tmp
!= NULL
&& attachment
== NULL
))
9641 *remote_errno
= FILEIO_EINVAL
;
9645 /* If an attachment was found, it must point into the packet buffer;
9646 work out how many bytes there were. */
9647 if (attachment_tmp
!= NULL
)
9649 *attachment
= attachment_tmp
;
9650 *attachment_len
= bytes_read
- (*attachment
- rs
->buf
);
9656 /* Open FILENAME on the remote target, using FLAGS and MODE. Return a
9657 remote file descriptor, or -1 if an error occurs (and set
9661 remote_hostio_open (struct target_ops
*self
,
9662 const char *filename
, int flags
, int mode
,
9665 struct remote_state
*rs
= get_remote_state ();
9667 int left
= get_remote_packet_size () - 1;
9669 remote_buffer_add_string (&p
, &left
, "vFile:open:");
9671 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
9673 remote_buffer_add_string (&p
, &left
, ",");
9675 remote_buffer_add_int (&p
, &left
, flags
);
9676 remote_buffer_add_string (&p
, &left
, ",");
9678 remote_buffer_add_int (&p
, &left
, mode
);
9680 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_open
,
9681 remote_errno
, NULL
, NULL
);
9684 /* Write up to LEN bytes from WRITE_BUF to FD on the remote target.
9685 Return the number of bytes written, or -1 if an error occurs (and
9686 set *REMOTE_ERRNO). */
9689 remote_hostio_pwrite (struct target_ops
*self
,
9690 int fd
, const gdb_byte
*write_buf
, int len
,
9691 ULONGEST offset
, int *remote_errno
)
9693 struct remote_state
*rs
= get_remote_state ();
9695 int left
= get_remote_packet_size ();
9698 remote_buffer_add_string (&p
, &left
, "vFile:pwrite:");
9700 remote_buffer_add_int (&p
, &left
, fd
);
9701 remote_buffer_add_string (&p
, &left
, ",");
9703 remote_buffer_add_int (&p
, &left
, offset
);
9704 remote_buffer_add_string (&p
, &left
, ",");
9706 p
+= remote_escape_output (write_buf
, len
, (gdb_byte
*) p
, &out_len
,
9707 get_remote_packet_size () - (p
- rs
->buf
));
9709 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_pwrite
,
9710 remote_errno
, NULL
, NULL
);
9713 /* Read up to LEN bytes FD on the remote target into READ_BUF
9714 Return the number of bytes read, or -1 if an error occurs (and
9715 set *REMOTE_ERRNO). */
9718 remote_hostio_pread (struct target_ops
*self
,
9719 int fd
, gdb_byte
*read_buf
, int len
,
9720 ULONGEST offset
, int *remote_errno
)
9722 struct remote_state
*rs
= get_remote_state ();
9725 int left
= get_remote_packet_size ();
9726 int ret
, attachment_len
;
9729 remote_buffer_add_string (&p
, &left
, "vFile:pread:");
9731 remote_buffer_add_int (&p
, &left
, fd
);
9732 remote_buffer_add_string (&p
, &left
, ",");
9734 remote_buffer_add_int (&p
, &left
, len
);
9735 remote_buffer_add_string (&p
, &left
, ",");
9737 remote_buffer_add_int (&p
, &left
, offset
);
9739 ret
= remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_pread
,
9740 remote_errno
, &attachment
,
9746 read_len
= remote_unescape_input ((gdb_byte
*) attachment
, attachment_len
,
9748 if (read_len
!= ret
)
9749 error (_("Read returned %d, but %d bytes."), ret
, (int) read_len
);
9754 /* Close FD on the remote target. Return 0, or -1 if an error occurs
9755 (and set *REMOTE_ERRNO). */
9758 remote_hostio_close (struct target_ops
*self
, int fd
, int *remote_errno
)
9760 struct remote_state
*rs
= get_remote_state ();
9762 int left
= get_remote_packet_size () - 1;
9764 remote_buffer_add_string (&p
, &left
, "vFile:close:");
9766 remote_buffer_add_int (&p
, &left
, fd
);
9768 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_close
,
9769 remote_errno
, NULL
, NULL
);
9772 /* Unlink FILENAME on the remote target. Return 0, or -1 if an error
9773 occurs (and set *REMOTE_ERRNO). */
9776 remote_hostio_unlink (struct target_ops
*self
,
9777 const char *filename
, int *remote_errno
)
9779 struct remote_state
*rs
= get_remote_state ();
9781 int left
= get_remote_packet_size () - 1;
9783 remote_buffer_add_string (&p
, &left
, "vFile:unlink:");
9785 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
9788 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_unlink
,
9789 remote_errno
, NULL
, NULL
);
9792 /* Read value of symbolic link FILENAME on the remote target. Return
9793 a null-terminated string allocated via xmalloc, or NULL if an error
9794 occurs (and set *REMOTE_ERRNO). */
9797 remote_hostio_readlink (struct target_ops
*self
,
9798 const char *filename
, int *remote_errno
)
9800 struct remote_state
*rs
= get_remote_state ();
9803 int left
= get_remote_packet_size ();
9804 int len
, attachment_len
;
9808 remote_buffer_add_string (&p
, &left
, "vFile:readlink:");
9810 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
9813 len
= remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_readlink
,
9814 remote_errno
, &attachment
,
9820 ret
= xmalloc (len
+ 1);
9822 read_len
= remote_unescape_input ((gdb_byte
*) attachment
, attachment_len
,
9823 (gdb_byte
*) ret
, len
);
9824 if (read_len
!= len
)
9825 error (_("Readlink returned %d, but %d bytes."), len
, read_len
);
9832 remote_fileio_errno_to_host (int errnum
)
9856 case FILEIO_ENOTDIR
:
9876 case FILEIO_ENAMETOOLONG
:
9877 return ENAMETOOLONG
;
9883 remote_hostio_error (int errnum
)
9885 int host_error
= remote_fileio_errno_to_host (errnum
);
9887 if (host_error
== -1)
9888 error (_("Unknown remote I/O error %d"), errnum
);
9890 error (_("Remote I/O error: %s"), safe_strerror (host_error
));
9894 remote_hostio_close_cleanup (void *opaque
)
9896 int fd
= *(int *) opaque
;
9899 remote_hostio_close (find_target_at (process_stratum
), fd
, &remote_errno
);
9904 remote_bfd_iovec_open (struct bfd
*abfd
, void *open_closure
)
9906 const char *filename
= bfd_get_filename (abfd
);
9907 int fd
, remote_errno
;
9910 gdb_assert (remote_filename_p (filename
));
9912 fd
= remote_hostio_open (find_target_at (process_stratum
),
9913 filename
+ 7, FILEIO_O_RDONLY
, 0, &remote_errno
);
9916 errno
= remote_fileio_errno_to_host (remote_errno
);
9917 bfd_set_error (bfd_error_system_call
);
9921 stream
= xmalloc (sizeof (int));
9927 remote_bfd_iovec_close (struct bfd
*abfd
, void *stream
)
9929 int fd
= *(int *)stream
;
9934 /* Ignore errors on close; these may happen if the remote
9935 connection was already torn down. */
9936 remote_hostio_close (find_target_at (process_stratum
), fd
, &remote_errno
);
9938 /* Zero means success. */
9943 remote_bfd_iovec_pread (struct bfd
*abfd
, void *stream
, void *buf
,
9944 file_ptr nbytes
, file_ptr offset
)
9946 int fd
= *(int *)stream
;
9948 file_ptr pos
, bytes
;
9951 while (nbytes
> pos
)
9953 bytes
= remote_hostio_pread (find_target_at (process_stratum
),
9954 fd
, (gdb_byte
*) buf
+ pos
, nbytes
- pos
,
9955 offset
+ pos
, &remote_errno
);
9957 /* Success, but no bytes, means end-of-file. */
9961 errno
= remote_fileio_errno_to_host (remote_errno
);
9962 bfd_set_error (bfd_error_system_call
);
9973 remote_bfd_iovec_stat (struct bfd
*abfd
, void *stream
, struct stat
*sb
)
9975 /* FIXME: We should probably implement remote_hostio_stat. */
9976 sb
->st_size
= INT_MAX
;
9981 remote_filename_p (const char *filename
)
9983 return strncmp (filename
,
9984 REMOTE_SYSROOT_PREFIX
,
9985 sizeof (REMOTE_SYSROOT_PREFIX
) - 1) == 0;
9989 remote_bfd_open (const char *remote_file
, const char *target
)
9991 bfd
*abfd
= gdb_bfd_openr_iovec (remote_file
, target
,
9992 remote_bfd_iovec_open
, NULL
,
9993 remote_bfd_iovec_pread
,
9994 remote_bfd_iovec_close
,
9995 remote_bfd_iovec_stat
);
10001 remote_file_put (const char *local_file
, const char *remote_file
, int from_tty
)
10003 struct cleanup
*back_to
, *close_cleanup
;
10004 int retcode
, fd
, remote_errno
, bytes
, io_size
;
10007 int bytes_in_buffer
;
10010 struct remote_state
*rs
= get_remote_state ();
10012 if (!rs
->remote_desc
)
10013 error (_("command can only be used with remote target"));
10015 file
= gdb_fopen_cloexec (local_file
, "rb");
10017 perror_with_name (local_file
);
10018 back_to
= make_cleanup_fclose (file
);
10020 fd
= remote_hostio_open (find_target_at (process_stratum
),
10021 remote_file
, (FILEIO_O_WRONLY
| FILEIO_O_CREAT
10023 0700, &remote_errno
);
10025 remote_hostio_error (remote_errno
);
10027 /* Send up to this many bytes at once. They won't all fit in the
10028 remote packet limit, so we'll transfer slightly fewer. */
10029 io_size
= get_remote_packet_size ();
10030 buffer
= xmalloc (io_size
);
10031 make_cleanup (xfree
, buffer
);
10033 close_cleanup
= make_cleanup (remote_hostio_close_cleanup
, &fd
);
10035 bytes_in_buffer
= 0;
10038 while (bytes_in_buffer
|| !saw_eof
)
10042 bytes
= fread (buffer
+ bytes_in_buffer
, 1,
10043 io_size
- bytes_in_buffer
,
10048 error (_("Error reading %s."), local_file
);
10051 /* EOF. Unless there is something still in the
10052 buffer from the last iteration, we are done. */
10054 if (bytes_in_buffer
== 0)
10062 bytes
+= bytes_in_buffer
;
10063 bytes_in_buffer
= 0;
10065 retcode
= remote_hostio_pwrite (find_target_at (process_stratum
),
10067 offset
, &remote_errno
);
10070 remote_hostio_error (remote_errno
);
10071 else if (retcode
== 0)
10072 error (_("Remote write of %d bytes returned 0!"), bytes
);
10073 else if (retcode
< bytes
)
10075 /* Short write. Save the rest of the read data for the next
10077 bytes_in_buffer
= bytes
- retcode
;
10078 memmove (buffer
, buffer
+ retcode
, bytes_in_buffer
);
10084 discard_cleanups (close_cleanup
);
10085 if (remote_hostio_close (find_target_at (process_stratum
), fd
, &remote_errno
))
10086 remote_hostio_error (remote_errno
);
10089 printf_filtered (_("Successfully sent file \"%s\".\n"), local_file
);
10090 do_cleanups (back_to
);
10094 remote_file_get (const char *remote_file
, const char *local_file
, int from_tty
)
10096 struct cleanup
*back_to
, *close_cleanup
;
10097 int fd
, remote_errno
, bytes
, io_size
;
10101 struct remote_state
*rs
= get_remote_state ();
10103 if (!rs
->remote_desc
)
10104 error (_("command can only be used with remote target"));
10106 fd
= remote_hostio_open (find_target_at (process_stratum
),
10107 remote_file
, FILEIO_O_RDONLY
, 0, &remote_errno
);
10109 remote_hostio_error (remote_errno
);
10111 file
= gdb_fopen_cloexec (local_file
, "wb");
10113 perror_with_name (local_file
);
10114 back_to
= make_cleanup_fclose (file
);
10116 /* Send up to this many bytes at once. They won't all fit in the
10117 remote packet limit, so we'll transfer slightly fewer. */
10118 io_size
= get_remote_packet_size ();
10119 buffer
= xmalloc (io_size
);
10120 make_cleanup (xfree
, buffer
);
10122 close_cleanup
= make_cleanup (remote_hostio_close_cleanup
, &fd
);
10127 bytes
= remote_hostio_pread (find_target_at (process_stratum
),
10128 fd
, buffer
, io_size
, offset
, &remote_errno
);
10130 /* Success, but no bytes, means end-of-file. */
10133 remote_hostio_error (remote_errno
);
10137 bytes
= fwrite (buffer
, 1, bytes
, file
);
10139 perror_with_name (local_file
);
10142 discard_cleanups (close_cleanup
);
10143 if (remote_hostio_close (find_target_at (process_stratum
), fd
, &remote_errno
))
10144 remote_hostio_error (remote_errno
);
10147 printf_filtered (_("Successfully fetched file \"%s\".\n"), remote_file
);
10148 do_cleanups (back_to
);
10152 remote_file_delete (const char *remote_file
, int from_tty
)
10154 int retcode
, remote_errno
;
10155 struct remote_state
*rs
= get_remote_state ();
10157 if (!rs
->remote_desc
)
10158 error (_("command can only be used with remote target"));
10160 retcode
= remote_hostio_unlink (find_target_at (process_stratum
),
10161 remote_file
, &remote_errno
);
10163 remote_hostio_error (remote_errno
);
10166 printf_filtered (_("Successfully deleted file \"%s\".\n"), remote_file
);
10170 remote_put_command (char *args
, int from_tty
)
10172 struct cleanup
*back_to
;
10176 error_no_arg (_("file to put"));
10178 argv
= gdb_buildargv (args
);
10179 back_to
= make_cleanup_freeargv (argv
);
10180 if (argv
[0] == NULL
|| argv
[1] == NULL
|| argv
[2] != NULL
)
10181 error (_("Invalid parameters to remote put"));
10183 remote_file_put (argv
[0], argv
[1], from_tty
);
10185 do_cleanups (back_to
);
10189 remote_get_command (char *args
, int from_tty
)
10191 struct cleanup
*back_to
;
10195 error_no_arg (_("file to get"));
10197 argv
= gdb_buildargv (args
);
10198 back_to
= make_cleanup_freeargv (argv
);
10199 if (argv
[0] == NULL
|| argv
[1] == NULL
|| argv
[2] != NULL
)
10200 error (_("Invalid parameters to remote get"));
10202 remote_file_get (argv
[0], argv
[1], from_tty
);
10204 do_cleanups (back_to
);
10208 remote_delete_command (char *args
, int from_tty
)
10210 struct cleanup
*back_to
;
10214 error_no_arg (_("file to delete"));
10216 argv
= gdb_buildargv (args
);
10217 back_to
= make_cleanup_freeargv (argv
);
10218 if (argv
[0] == NULL
|| argv
[1] != NULL
)
10219 error (_("Invalid parameters to remote delete"));
10221 remote_file_delete (argv
[0], from_tty
);
10223 do_cleanups (back_to
);
10227 remote_command (char *args
, int from_tty
)
10229 help_list (remote_cmdlist
, "remote ", -1, gdb_stdout
);
10233 remote_can_execute_reverse (struct target_ops
*self
)
10235 if (remote_protocol_packets
[PACKET_bs
].support
== PACKET_ENABLE
10236 || remote_protocol_packets
[PACKET_bc
].support
== PACKET_ENABLE
)
10243 remote_supports_non_stop (struct target_ops
*self
)
10249 remote_supports_disable_randomization (struct target_ops
*self
)
10251 /* Only supported in extended mode. */
10256 remote_supports_multi_process (struct target_ops
*self
)
10258 struct remote_state
*rs
= get_remote_state ();
10260 /* Only extended-remote handles being attached to multiple
10261 processes, even though plain remote can use the multi-process
10262 thread id extensions, so that GDB knows the target process's
10264 return rs
->extended
&& remote_multi_process_p (rs
);
10268 remote_supports_cond_tracepoints (void)
10270 struct remote_state
*rs
= get_remote_state ();
10272 return rs
->cond_tracepoints
;
10276 remote_supports_cond_breakpoints (struct target_ops
*self
)
10278 struct remote_state
*rs
= get_remote_state ();
10280 return rs
->cond_breakpoints
;
10284 remote_supports_fast_tracepoints (void)
10286 struct remote_state
*rs
= get_remote_state ();
10288 return rs
->fast_tracepoints
;
10292 remote_supports_static_tracepoints (void)
10294 struct remote_state
*rs
= get_remote_state ();
10296 return rs
->static_tracepoints
;
10300 remote_supports_install_in_trace (void)
10302 struct remote_state
*rs
= get_remote_state ();
10304 return rs
->install_in_trace
;
10308 remote_supports_enable_disable_tracepoint (struct target_ops
*self
)
10310 struct remote_state
*rs
= get_remote_state ();
10312 return rs
->enable_disable_tracepoints
;
10316 remote_supports_string_tracing (struct target_ops
*self
)
10318 struct remote_state
*rs
= get_remote_state ();
10320 return rs
->string_tracing
;
10324 remote_can_run_breakpoint_commands (struct target_ops
*self
)
10326 struct remote_state
*rs
= get_remote_state ();
10328 return rs
->breakpoint_commands
;
10332 remote_trace_init (struct target_ops
*self
)
10335 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10336 if (strcmp (target_buf
, "OK") != 0)
10337 error (_("Target does not support this command."));
10340 static void free_actions_list (char **actions_list
);
10341 static void free_actions_list_cleanup_wrapper (void *);
10343 free_actions_list_cleanup_wrapper (void *al
)
10345 free_actions_list (al
);
10349 free_actions_list (char **actions_list
)
10353 if (actions_list
== 0)
10356 for (ndx
= 0; actions_list
[ndx
]; ndx
++)
10357 xfree (actions_list
[ndx
]);
10359 xfree (actions_list
);
10362 /* Recursive routine to walk through command list including loops, and
10363 download packets for each command. */
10366 remote_download_command_source (int num
, ULONGEST addr
,
10367 struct command_line
*cmds
)
10369 struct remote_state
*rs
= get_remote_state ();
10370 struct command_line
*cmd
;
10372 for (cmd
= cmds
; cmd
; cmd
= cmd
->next
)
10374 QUIT
; /* Allow user to bail out with ^C. */
10375 strcpy (rs
->buf
, "QTDPsrc:");
10376 encode_source_string (num
, addr
, "cmd", cmd
->line
,
10377 rs
->buf
+ strlen (rs
->buf
),
10378 rs
->buf_size
- strlen (rs
->buf
));
10380 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10381 if (strcmp (target_buf
, "OK"))
10382 warning (_("Target does not support source download."));
10384 if (cmd
->control_type
== while_control
10385 || cmd
->control_type
== while_stepping_control
)
10387 remote_download_command_source (num
, addr
, *cmd
->body_list
);
10389 QUIT
; /* Allow user to bail out with ^C. */
10390 strcpy (rs
->buf
, "QTDPsrc:");
10391 encode_source_string (num
, addr
, "cmd", "end",
10392 rs
->buf
+ strlen (rs
->buf
),
10393 rs
->buf_size
- strlen (rs
->buf
));
10395 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10396 if (strcmp (target_buf
, "OK"))
10397 warning (_("Target does not support source download."));
10403 remote_download_tracepoint (struct target_ops
*self
, struct bp_location
*loc
)
10405 #define BUF_SIZE 2048
10409 char buf
[BUF_SIZE
];
10410 char **tdp_actions
;
10411 char **stepping_actions
;
10413 struct cleanup
*old_chain
= NULL
;
10414 struct agent_expr
*aexpr
;
10415 struct cleanup
*aexpr_chain
= NULL
;
10417 struct breakpoint
*b
= loc
->owner
;
10418 struct tracepoint
*t
= (struct tracepoint
*) b
;
10420 encode_actions_rsp (loc
, &tdp_actions
, &stepping_actions
);
10421 old_chain
= make_cleanup (free_actions_list_cleanup_wrapper
,
10423 (void) make_cleanup (free_actions_list_cleanup_wrapper
,
10426 tpaddr
= loc
->address
;
10427 sprintf_vma (addrbuf
, tpaddr
);
10428 xsnprintf (buf
, BUF_SIZE
, "QTDP:%x:%s:%c:%lx:%x", b
->number
,
10429 addrbuf
, /* address */
10430 (b
->enable_state
== bp_enabled
? 'E' : 'D'),
10431 t
->step_count
, t
->pass_count
);
10432 /* Fast tracepoints are mostly handled by the target, but we can
10433 tell the target how big of an instruction block should be moved
10435 if (b
->type
== bp_fast_tracepoint
)
10437 /* Only test for support at download time; we may not know
10438 target capabilities at definition time. */
10439 if (remote_supports_fast_tracepoints ())
10443 if (gdbarch_fast_tracepoint_valid_at (target_gdbarch (),
10444 tpaddr
, &isize
, NULL
))
10445 xsnprintf (buf
+ strlen (buf
), BUF_SIZE
- strlen (buf
), ":F%x",
10448 /* If it passed validation at definition but fails now,
10449 something is very wrong. */
10450 internal_error (__FILE__
, __LINE__
,
10451 _("Fast tracepoint not "
10452 "valid during download"));
10455 /* Fast tracepoints are functionally identical to regular
10456 tracepoints, so don't take lack of support as a reason to
10457 give up on the trace run. */
10458 warning (_("Target does not support fast tracepoints, "
10459 "downloading %d as regular tracepoint"), b
->number
);
10461 else if (b
->type
== bp_static_tracepoint
)
10463 /* Only test for support at download time; we may not know
10464 target capabilities at definition time. */
10465 if (remote_supports_static_tracepoints ())
10467 struct static_tracepoint_marker marker
;
10469 if (target_static_tracepoint_marker_at (tpaddr
, &marker
))
10470 strcat (buf
, ":S");
10472 error (_("Static tracepoint not valid during download"));
10475 /* Fast tracepoints are functionally identical to regular
10476 tracepoints, so don't take lack of support as a reason
10477 to give up on the trace run. */
10478 error (_("Target does not support static tracepoints"));
10480 /* If the tracepoint has a conditional, make it into an agent
10481 expression and append to the definition. */
10484 /* Only test support at download time, we may not know target
10485 capabilities at definition time. */
10486 if (remote_supports_cond_tracepoints ())
10488 aexpr
= gen_eval_for_expr (tpaddr
, loc
->cond
);
10489 aexpr_chain
= make_cleanup_free_agent_expr (aexpr
);
10490 xsnprintf (buf
+ strlen (buf
), BUF_SIZE
- strlen (buf
), ":X%x,",
10492 pkt
= buf
+ strlen (buf
);
10493 for (ndx
= 0; ndx
< aexpr
->len
; ++ndx
)
10494 pkt
= pack_hex_byte (pkt
, aexpr
->buf
[ndx
]);
10496 do_cleanups (aexpr_chain
);
10499 warning (_("Target does not support conditional tracepoints, "
10500 "ignoring tp %d cond"), b
->number
);
10503 if (b
->commands
|| *default_collect
)
10506 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10507 if (strcmp (target_buf
, "OK"))
10508 error (_("Target does not support tracepoints."));
10510 /* do_single_steps (t); */
10513 for (ndx
= 0; tdp_actions
[ndx
]; ndx
++)
10515 QUIT
; /* Allow user to bail out with ^C. */
10516 xsnprintf (buf
, BUF_SIZE
, "QTDP:-%x:%s:%s%c",
10517 b
->number
, addrbuf
, /* address */
10519 ((tdp_actions
[ndx
+ 1] || stepping_actions
)
10522 remote_get_noisy_reply (&target_buf
,
10524 if (strcmp (target_buf
, "OK"))
10525 error (_("Error on target while setting tracepoints."));
10528 if (stepping_actions
)
10530 for (ndx
= 0; stepping_actions
[ndx
]; ndx
++)
10532 QUIT
; /* Allow user to bail out with ^C. */
10533 xsnprintf (buf
, BUF_SIZE
, "QTDP:-%x:%s:%s%s%s",
10534 b
->number
, addrbuf
, /* address */
10535 ((ndx
== 0) ? "S" : ""),
10536 stepping_actions
[ndx
],
10537 (stepping_actions
[ndx
+ 1] ? "-" : ""));
10539 remote_get_noisy_reply (&target_buf
,
10541 if (strcmp (target_buf
, "OK"))
10542 error (_("Error on target while setting tracepoints."));
10546 if (remote_protocol_packets
[PACKET_TracepointSource
].support
10549 if (b
->addr_string
)
10551 strcpy (buf
, "QTDPsrc:");
10552 encode_source_string (b
->number
, loc
->address
,
10553 "at", b
->addr_string
, buf
+ strlen (buf
),
10554 2048 - strlen (buf
));
10557 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10558 if (strcmp (target_buf
, "OK"))
10559 warning (_("Target does not support source download."));
10561 if (b
->cond_string
)
10563 strcpy (buf
, "QTDPsrc:");
10564 encode_source_string (b
->number
, loc
->address
,
10565 "cond", b
->cond_string
, buf
+ strlen (buf
),
10566 2048 - strlen (buf
));
10568 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10569 if (strcmp (target_buf
, "OK"))
10570 warning (_("Target does not support source download."));
10572 remote_download_command_source (b
->number
, loc
->address
,
10573 breakpoint_commands (b
));
10576 do_cleanups (old_chain
);
10580 remote_can_download_tracepoint (struct target_ops
*self
)
10582 struct remote_state
*rs
= get_remote_state ();
10583 struct trace_status
*ts
;
10586 /* Don't try to install tracepoints until we've relocated our
10587 symbols, and fetched and merged the target's tracepoint list with
10589 if (rs
->starting_up
)
10592 ts
= current_trace_status ();
10593 status
= remote_get_trace_status (self
, ts
);
10595 if (status
== -1 || !ts
->running_known
|| !ts
->running
)
10598 /* If we are in a tracing experiment, but remote stub doesn't support
10599 installing tracepoint in trace, we have to return. */
10600 if (!remote_supports_install_in_trace ())
10608 remote_download_trace_state_variable (struct target_ops
*self
,
10609 struct trace_state_variable
*tsv
)
10611 struct remote_state
*rs
= get_remote_state ();
10614 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTDV:%x:%s:%x:",
10615 tsv
->number
, phex ((ULONGEST
) tsv
->initial_value
, 8),
10617 p
= rs
->buf
+ strlen (rs
->buf
);
10618 if ((p
- rs
->buf
) + strlen (tsv
->name
) * 2 >= get_remote_packet_size ())
10619 error (_("Trace state variable name too long for tsv definition packet"));
10620 p
+= 2 * bin2hex ((gdb_byte
*) (tsv
->name
), p
, strlen (tsv
->name
));
10623 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10624 if (*target_buf
== '\0')
10625 error (_("Target does not support this command."));
10626 if (strcmp (target_buf
, "OK") != 0)
10627 error (_("Error on target while downloading trace state variable."));
10631 remote_enable_tracepoint (struct target_ops
*self
,
10632 struct bp_location
*location
)
10634 struct remote_state
*rs
= get_remote_state ();
10637 sprintf_vma (addr_buf
, location
->address
);
10638 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTEnable:%x:%s",
10639 location
->owner
->number
, addr_buf
);
10641 remote_get_noisy_reply (&rs
->buf
, &rs
->buf_size
);
10642 if (*rs
->buf
== '\0')
10643 error (_("Target does not support enabling tracepoints while a trace run is ongoing."));
10644 if (strcmp (rs
->buf
, "OK") != 0)
10645 error (_("Error on target while enabling tracepoint."));
10649 remote_disable_tracepoint (struct target_ops
*self
,
10650 struct bp_location
*location
)
10652 struct remote_state
*rs
= get_remote_state ();
10655 sprintf_vma (addr_buf
, location
->address
);
10656 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTDisable:%x:%s",
10657 location
->owner
->number
, addr_buf
);
10659 remote_get_noisy_reply (&rs
->buf
, &rs
->buf_size
);
10660 if (*rs
->buf
== '\0')
10661 error (_("Target does not support disabling tracepoints while a trace run is ongoing."));
10662 if (strcmp (rs
->buf
, "OK") != 0)
10663 error (_("Error on target while disabling tracepoint."));
10667 remote_trace_set_readonly_regions (struct target_ops
*self
)
10671 bfd_size_type size
;
10677 return; /* No information to give. */
10679 strcpy (target_buf
, "QTro");
10680 offset
= strlen (target_buf
);
10681 for (s
= exec_bfd
->sections
; s
; s
= s
->next
)
10683 char tmp1
[40], tmp2
[40];
10686 if ((s
->flags
& SEC_LOAD
) == 0 ||
10687 /* (s->flags & SEC_CODE) == 0 || */
10688 (s
->flags
& SEC_READONLY
) == 0)
10692 vma
= bfd_get_section_vma (abfd
, s
);
10693 size
= bfd_get_section_size (s
);
10694 sprintf_vma (tmp1
, vma
);
10695 sprintf_vma (tmp2
, vma
+ size
);
10696 sec_length
= 1 + strlen (tmp1
) + 1 + strlen (tmp2
);
10697 if (offset
+ sec_length
+ 1 > target_buf_size
)
10699 if (remote_protocol_packets
[PACKET_qXfer_traceframe_info
].support
10702 Too many sections for read-only sections definition packet."));
10705 xsnprintf (target_buf
+ offset
, target_buf_size
- offset
, ":%s,%s",
10707 offset
+= sec_length
;
10711 putpkt (target_buf
);
10712 getpkt (&target_buf
, &target_buf_size
, 0);
10717 remote_trace_start (struct target_ops
*self
)
10719 putpkt ("QTStart");
10720 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10721 if (*target_buf
== '\0')
10722 error (_("Target does not support this command."));
10723 if (strcmp (target_buf
, "OK") != 0)
10724 error (_("Bogus reply from target: %s"), target_buf
);
10728 remote_get_trace_status (struct target_ops
*self
, struct trace_status
*ts
)
10730 /* Initialize it just to avoid a GCC false warning. */
10732 /* FIXME we need to get register block size some other way. */
10733 extern int trace_regblock_size
;
10734 volatile struct gdb_exception ex
;
10735 enum packet_result result
;
10737 if (remote_protocol_packets
[PACKET_qTStatus
].support
== PACKET_DISABLE
)
10740 trace_regblock_size
= get_remote_arch_state ()->sizeof_g_packet
;
10742 putpkt ("qTStatus");
10744 TRY_CATCH (ex
, RETURN_MASK_ERROR
)
10746 p
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10750 if (ex
.error
!= TARGET_CLOSE_ERROR
)
10752 exception_fprintf (gdb_stderr
, ex
, "qTStatus: ");
10755 throw_exception (ex
);
10758 result
= packet_ok (p
, &remote_protocol_packets
[PACKET_qTStatus
]);
10760 /* If the remote target doesn't do tracing, flag it. */
10761 if (result
== PACKET_UNKNOWN
)
10764 /* We're working with a live target. */
10765 ts
->filename
= NULL
;
10768 error (_("Bogus trace status reply from target: %s"), target_buf
);
10770 /* Function 'parse_trace_status' sets default value of each field of
10771 'ts' at first, so we don't have to do it here. */
10772 parse_trace_status (p
, ts
);
10774 return ts
->running
;
10778 remote_get_tracepoint_status (struct target_ops
*self
, struct breakpoint
*bp
,
10779 struct uploaded_tp
*utp
)
10781 struct remote_state
*rs
= get_remote_state ();
10783 struct bp_location
*loc
;
10784 struct tracepoint
*tp
= (struct tracepoint
*) bp
;
10785 size_t size
= get_remote_packet_size ();
10789 tp
->base
.hit_count
= 0;
10790 tp
->traceframe_usage
= 0;
10791 for (loc
= tp
->base
.loc
; loc
; loc
= loc
->next
)
10793 /* If the tracepoint was never downloaded, don't go asking for
10795 if (tp
->number_on_target
== 0)
10797 xsnprintf (rs
->buf
, size
, "qTP:%x:%s", tp
->number_on_target
,
10798 phex_nz (loc
->address
, 0));
10800 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10801 if (reply
&& *reply
)
10804 parse_tracepoint_status (reply
+ 1, bp
, utp
);
10810 utp
->hit_count
= 0;
10811 utp
->traceframe_usage
= 0;
10812 xsnprintf (rs
->buf
, size
, "qTP:%x:%s", utp
->number
,
10813 phex_nz (utp
->addr
, 0));
10815 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10816 if (reply
&& *reply
)
10819 parse_tracepoint_status (reply
+ 1, bp
, utp
);
10825 remote_trace_stop (struct target_ops
*self
)
10828 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10829 if (*target_buf
== '\0')
10830 error (_("Target does not support this command."));
10831 if (strcmp (target_buf
, "OK") != 0)
10832 error (_("Bogus reply from target: %s"), target_buf
);
10836 remote_trace_find (struct target_ops
*self
,
10837 enum trace_find_type type
, int num
,
10838 CORE_ADDR addr1
, CORE_ADDR addr2
,
10841 struct remote_state
*rs
= get_remote_state ();
10842 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
10844 int target_frameno
= -1, target_tracept
= -1;
10846 /* Lookups other than by absolute frame number depend on the current
10847 trace selected, so make sure it is correct on the remote end
10849 if (type
!= tfind_number
)
10850 set_remote_traceframe ();
10853 strcpy (p
, "QTFrame:");
10854 p
= strchr (p
, '\0');
10858 xsnprintf (p
, endbuf
- p
, "%x", num
);
10861 xsnprintf (p
, endbuf
- p
, "pc:%s", phex_nz (addr1
, 0));
10864 xsnprintf (p
, endbuf
- p
, "tdp:%x", num
);
10867 xsnprintf (p
, endbuf
- p
, "range:%s:%s", phex_nz (addr1
, 0),
10868 phex_nz (addr2
, 0));
10870 case tfind_outside
:
10871 xsnprintf (p
, endbuf
- p
, "outside:%s:%s", phex_nz (addr1
, 0),
10872 phex_nz (addr2
, 0));
10875 error (_("Unknown trace find type %d"), type
);
10879 reply
= remote_get_noisy_reply (&(rs
->buf
), &rs
->buf_size
);
10880 if (*reply
== '\0')
10881 error (_("Target does not support this command."));
10883 while (reply
&& *reply
)
10888 target_frameno
= (int) strtol (p
, &reply
, 16);
10890 error (_("Unable to parse trace frame number"));
10891 /* Don't update our remote traceframe number cache on failure
10892 to select a remote traceframe. */
10893 if (target_frameno
== -1)
10898 target_tracept
= (int) strtol (p
, &reply
, 16);
10900 error (_("Unable to parse tracepoint number"));
10902 case 'O': /* "OK"? */
10903 if (reply
[1] == 'K' && reply
[2] == '\0')
10906 error (_("Bogus reply from target: %s"), reply
);
10909 error (_("Bogus reply from target: %s"), reply
);
10912 *tpp
= target_tracept
;
10914 rs
->remote_traceframe_number
= target_frameno
;
10915 return target_frameno
;
10919 remote_get_trace_state_variable_value (struct target_ops
*self
,
10920 int tsvnum
, LONGEST
*val
)
10922 struct remote_state
*rs
= get_remote_state ();
10926 set_remote_traceframe ();
10928 xsnprintf (rs
->buf
, get_remote_packet_size (), "qTV:%x", tsvnum
);
10930 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10931 if (reply
&& *reply
)
10935 unpack_varlen_hex (reply
+ 1, &uval
);
10936 *val
= (LONGEST
) uval
;
10944 remote_save_trace_data (struct target_ops
*self
, const char *filename
)
10946 struct remote_state
*rs
= get_remote_state ();
10950 strcpy (p
, "QTSave:");
10952 if ((p
- rs
->buf
) + strlen (filename
) * 2 >= get_remote_packet_size ())
10953 error (_("Remote file name too long for trace save packet"));
10954 p
+= 2 * bin2hex ((gdb_byte
*) filename
, p
, strlen (filename
));
10957 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10958 if (*reply
== '\0')
10959 error (_("Target does not support this command."));
10960 if (strcmp (reply
, "OK") != 0)
10961 error (_("Bogus reply from target: %s"), reply
);
10965 /* This is basically a memory transfer, but needs to be its own packet
10966 because we don't know how the target actually organizes its trace
10967 memory, plus we want to be able to ask for as much as possible, but
10968 not be unhappy if we don't get as much as we ask for. */
10971 remote_get_raw_trace_data (gdb_byte
*buf
, ULONGEST offset
, LONGEST len
)
10973 struct remote_state
*rs
= get_remote_state ();
10979 strcpy (p
, "qTBuffer:");
10981 p
+= hexnumstr (p
, offset
);
10983 p
+= hexnumstr (p
, len
);
10987 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10988 if (reply
&& *reply
)
10990 /* 'l' by itself means we're at the end of the buffer and
10991 there is nothing more to get. */
10995 /* Convert the reply into binary. Limit the number of bytes to
10996 convert according to our passed-in buffer size, rather than
10997 what was returned in the packet; if the target is
10998 unexpectedly generous and gives us a bigger reply than we
10999 asked for, we don't want to crash. */
11000 rslt
= hex2bin (target_buf
, buf
, len
);
11004 /* Something went wrong, flag as an error. */
11009 remote_set_disconnected_tracing (int val
)
11011 struct remote_state
*rs
= get_remote_state ();
11013 if (rs
->disconnected_tracing
)
11017 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTDisconnected:%x", val
);
11019 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11020 if (*reply
== '\0')
11021 error (_("Target does not support this command."));
11022 if (strcmp (reply
, "OK") != 0)
11023 error (_("Bogus reply from target: %s"), reply
);
11026 warning (_("Target does not support disconnected tracing."));
11030 remote_core_of_thread (struct target_ops
*ops
, ptid_t ptid
)
11032 struct thread_info
*info
= find_thread_ptid (ptid
);
11034 if (info
&& info
->private)
11035 return info
->private->core
;
11040 remote_set_circular_trace_buffer (int val
)
11042 struct remote_state
*rs
= get_remote_state ();
11045 xsnprintf (rs
->buf
, get_remote_packet_size (), "QTBuffer:circular:%x", val
);
11047 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11048 if (*reply
== '\0')
11049 error (_("Target does not support this command."));
11050 if (strcmp (reply
, "OK") != 0)
11051 error (_("Bogus reply from target: %s"), reply
);
11054 static struct traceframe_info
*
11055 remote_traceframe_info (void)
11059 /* If current traceframe is not selected, don't bother the remote
11061 if (get_traceframe_number () < 0)
11064 text
= target_read_stralloc (¤t_target
,
11065 TARGET_OBJECT_TRACEFRAME_INFO
, NULL
);
11068 struct traceframe_info
*info
;
11069 struct cleanup
*back_to
= make_cleanup (xfree
, text
);
11071 info
= parse_traceframe_info (text
);
11072 do_cleanups (back_to
);
11079 /* Handle the qTMinFTPILen packet. Returns the minimum length of
11080 instruction on which a fast tracepoint may be placed. Returns -1
11081 if the packet is not supported, and 0 if the minimum instruction
11082 length is unknown. */
11085 remote_get_min_fast_tracepoint_insn_len (void)
11087 struct remote_state
*rs
= get_remote_state ();
11090 /* If we're not debugging a process yet, the IPA can't be
11092 if (!target_has_execution
)
11095 /* Make sure the remote is pointing at the right process. */
11096 set_general_process ();
11098 xsnprintf (rs
->buf
, get_remote_packet_size (), "qTMinFTPILen");
11100 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11101 if (*reply
== '\0')
11105 ULONGEST min_insn_len
;
11107 unpack_varlen_hex (reply
, &min_insn_len
);
11109 return (int) min_insn_len
;
11114 remote_set_trace_buffer_size (LONGEST val
)
11116 if (remote_protocol_packets
[PACKET_QTBuffer_size
].support
11119 struct remote_state
*rs
= get_remote_state ();
11120 char *buf
= rs
->buf
;
11121 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
11122 enum packet_result result
;
11124 gdb_assert (val
>= 0 || val
== -1);
11125 buf
+= xsnprintf (buf
, endbuf
- buf
, "QTBuffer:size:");
11126 /* Send -1 as literal "-1" to avoid host size dependency. */
11130 buf
+= hexnumstr (buf
, (ULONGEST
) -val
);
11133 buf
+= hexnumstr (buf
, (ULONGEST
) val
);
11136 remote_get_noisy_reply (&rs
->buf
, &rs
->buf_size
);
11137 result
= packet_ok (rs
->buf
,
11138 &remote_protocol_packets
[PACKET_QTBuffer_size
]);
11140 if (result
!= PACKET_OK
)
11141 warning (_("Bogus reply from target: %s"), rs
->buf
);
11146 remote_set_trace_notes (const char *user
, const char *notes
,
11147 const char *stop_notes
)
11149 struct remote_state
*rs
= get_remote_state ();
11151 char *buf
= rs
->buf
;
11152 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
11155 buf
+= xsnprintf (buf
, endbuf
- buf
, "QTNotes:");
11158 buf
+= xsnprintf (buf
, endbuf
- buf
, "user:");
11159 nbytes
= bin2hex ((gdb_byte
*) user
, buf
, strlen (user
));
11165 buf
+= xsnprintf (buf
, endbuf
- buf
, "notes:");
11166 nbytes
= bin2hex ((gdb_byte
*) notes
, buf
, strlen (notes
));
11172 buf
+= xsnprintf (buf
, endbuf
- buf
, "tstop:");
11173 nbytes
= bin2hex ((gdb_byte
*) stop_notes
, buf
, strlen (stop_notes
));
11177 /* Ensure the buffer is terminated. */
11181 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
11182 if (*reply
== '\0')
11185 if (strcmp (reply
, "OK") != 0)
11186 error (_("Bogus reply from target: %s"), reply
);
11192 remote_use_agent (int use
)
11194 if (remote_protocol_packets
[PACKET_QAgent
].support
!= PACKET_DISABLE
)
11196 struct remote_state
*rs
= get_remote_state ();
11198 /* If the stub supports QAgent. */
11199 xsnprintf (rs
->buf
, get_remote_packet_size (), "QAgent:%d", use
);
11201 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11203 if (strcmp (rs
->buf
, "OK") == 0)
11214 remote_can_use_agent (void)
11216 return (remote_protocol_packets
[PACKET_QAgent
].support
!= PACKET_DISABLE
);
11219 struct btrace_target_info
11221 /* The ptid of the traced thread. */
11225 /* Check whether the target supports branch tracing. */
11228 remote_supports_btrace (struct target_ops
*self
)
11230 if (remote_protocol_packets
[PACKET_Qbtrace_off
].support
!= PACKET_ENABLE
)
11232 if (remote_protocol_packets
[PACKET_Qbtrace_bts
].support
!= PACKET_ENABLE
)
11234 if (remote_protocol_packets
[PACKET_qXfer_btrace
].support
!= PACKET_ENABLE
)
11240 /* Enable branch tracing. */
11242 static struct btrace_target_info
*
11243 remote_enable_btrace (ptid_t ptid
)
11245 struct btrace_target_info
*tinfo
= NULL
;
11246 struct packet_config
*packet
= &remote_protocol_packets
[PACKET_Qbtrace_bts
];
11247 struct remote_state
*rs
= get_remote_state ();
11248 char *buf
= rs
->buf
;
11249 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
11251 if (packet
->support
!= PACKET_ENABLE
)
11252 error (_("Target does not support branch tracing."));
11254 set_general_thread (ptid
);
11256 buf
+= xsnprintf (buf
, endbuf
- buf
, "%s", packet
->name
);
11258 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11260 if (packet_ok (rs
->buf
, packet
) == PACKET_ERROR
)
11262 if (rs
->buf
[0] == 'E' && rs
->buf
[1] == '.')
11263 error (_("Could not enable branch tracing for %s: %s"),
11264 target_pid_to_str (ptid
), rs
->buf
+ 2);
11266 error (_("Could not enable branch tracing for %s."),
11267 target_pid_to_str (ptid
));
11270 tinfo
= xzalloc (sizeof (*tinfo
));
11271 tinfo
->ptid
= ptid
;
11276 /* Disable branch tracing. */
11279 remote_disable_btrace (struct btrace_target_info
*tinfo
)
11281 struct packet_config
*packet
= &remote_protocol_packets
[PACKET_Qbtrace_off
];
11282 struct remote_state
*rs
= get_remote_state ();
11283 char *buf
= rs
->buf
;
11284 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
11286 if (packet
->support
!= PACKET_ENABLE
)
11287 error (_("Target does not support branch tracing."));
11289 set_general_thread (tinfo
->ptid
);
11291 buf
+= xsnprintf (buf
, endbuf
- buf
, "%s", packet
->name
);
11293 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11295 if (packet_ok (rs
->buf
, packet
) == PACKET_ERROR
)
11297 if (rs
->buf
[0] == 'E' && rs
->buf
[1] == '.')
11298 error (_("Could not disable branch tracing for %s: %s"),
11299 target_pid_to_str (tinfo
->ptid
), rs
->buf
+ 2);
11301 error (_("Could not disable branch tracing for %s."),
11302 target_pid_to_str (tinfo
->ptid
));
11308 /* Teardown branch tracing. */
11311 remote_teardown_btrace (struct btrace_target_info
*tinfo
)
11313 /* We must not talk to the target during teardown. */
11317 /* Read the branch trace. */
11319 static enum btrace_error
11320 remote_read_btrace (VEC (btrace_block_s
) **btrace
,
11321 struct btrace_target_info
*tinfo
,
11322 enum btrace_read_type type
)
11324 struct packet_config
*packet
= &remote_protocol_packets
[PACKET_qXfer_btrace
];
11325 struct remote_state
*rs
= get_remote_state ();
11326 struct cleanup
*cleanup
;
11330 if (packet
->support
!= PACKET_ENABLE
)
11331 error (_("Target does not support branch tracing."));
11333 #if !defined(HAVE_LIBEXPAT)
11334 error (_("Cannot process branch tracing result. XML parsing not supported."));
11339 case BTRACE_READ_ALL
:
11342 case BTRACE_READ_NEW
:
11345 case BTRACE_READ_DELTA
:
11349 internal_error (__FILE__
, __LINE__
,
11350 _("Bad branch tracing read type: %u."),
11351 (unsigned int) type
);
11354 xml
= target_read_stralloc (¤t_target
,
11355 TARGET_OBJECT_BTRACE
, annex
);
11357 return BTRACE_ERR_UNKNOWN
;
11359 cleanup
= make_cleanup (xfree
, xml
);
11360 *btrace
= parse_xml_btrace (xml
);
11361 do_cleanups (cleanup
);
11363 return BTRACE_ERR_NONE
;
11367 remote_augmented_libraries_svr4_read (void)
11369 struct remote_state
*rs
= get_remote_state ();
11371 return rs
->augmented_libraries_svr4_read
;
11374 /* Implementation of to_load. */
11377 remote_load (struct target_ops
*self
, char *name
, int from_tty
)
11379 generic_load (name
, from_tty
);
11383 init_remote_ops (void)
11385 remote_ops
.to_shortname
= "remote";
11386 remote_ops
.to_longname
= "Remote serial target in gdb-specific protocol";
11387 remote_ops
.to_doc
=
11388 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
11389 Specify the serial device it is connected to\n\
11390 (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).";
11391 remote_ops
.to_open
= remote_open
;
11392 remote_ops
.to_close
= remote_close
;
11393 remote_ops
.to_detach
= remote_detach
;
11394 remote_ops
.to_disconnect
= remote_disconnect
;
11395 remote_ops
.to_resume
= remote_resume
;
11396 remote_ops
.to_wait
= remote_wait
;
11397 remote_ops
.to_fetch_registers
= remote_fetch_registers
;
11398 remote_ops
.to_store_registers
= remote_store_registers
;
11399 remote_ops
.to_prepare_to_store
= remote_prepare_to_store
;
11400 remote_ops
.to_files_info
= remote_files_info
;
11401 remote_ops
.to_insert_breakpoint
= remote_insert_breakpoint
;
11402 remote_ops
.to_remove_breakpoint
= remote_remove_breakpoint
;
11403 remote_ops
.to_stopped_by_watchpoint
= remote_stopped_by_watchpoint
;
11404 remote_ops
.to_stopped_data_address
= remote_stopped_data_address
;
11405 remote_ops
.to_watchpoint_addr_within_range
=
11406 remote_watchpoint_addr_within_range
;
11407 remote_ops
.to_can_use_hw_breakpoint
= remote_check_watch_resources
;
11408 remote_ops
.to_insert_hw_breakpoint
= remote_insert_hw_breakpoint
;
11409 remote_ops
.to_remove_hw_breakpoint
= remote_remove_hw_breakpoint
;
11410 remote_ops
.to_region_ok_for_hw_watchpoint
11411 = remote_region_ok_for_hw_watchpoint
;
11412 remote_ops
.to_insert_watchpoint
= remote_insert_watchpoint
;
11413 remote_ops
.to_remove_watchpoint
= remote_remove_watchpoint
;
11414 remote_ops
.to_kill
= remote_kill
;
11415 remote_ops
.to_load
= remote_load
;
11416 remote_ops
.to_mourn_inferior
= remote_mourn
;
11417 remote_ops
.to_pass_signals
= remote_pass_signals
;
11418 remote_ops
.to_program_signals
= remote_program_signals
;
11419 remote_ops
.to_thread_alive
= remote_thread_alive
;
11420 remote_ops
.to_find_new_threads
= remote_threads_info
;
11421 remote_ops
.to_pid_to_str
= remote_pid_to_str
;
11422 remote_ops
.to_extra_thread_info
= remote_threads_extra_info
;
11423 remote_ops
.to_get_ada_task_ptid
= remote_get_ada_task_ptid
;
11424 remote_ops
.to_stop
= remote_stop
;
11425 remote_ops
.to_xfer_partial
= remote_xfer_partial
;
11426 remote_ops
.to_rcmd
= remote_rcmd
;
11427 remote_ops
.to_log_command
= serial_log_command
;
11428 remote_ops
.to_get_thread_local_address
= remote_get_thread_local_address
;
11429 remote_ops
.to_stratum
= process_stratum
;
11430 remote_ops
.to_has_all_memory
= default_child_has_all_memory
;
11431 remote_ops
.to_has_memory
= default_child_has_memory
;
11432 remote_ops
.to_has_stack
= default_child_has_stack
;
11433 remote_ops
.to_has_registers
= default_child_has_registers
;
11434 remote_ops
.to_has_execution
= default_child_has_execution
;
11435 remote_ops
.to_has_thread_control
= tc_schedlock
; /* can lock scheduler */
11436 remote_ops
.to_can_execute_reverse
= remote_can_execute_reverse
;
11437 remote_ops
.to_magic
= OPS_MAGIC
;
11438 remote_ops
.to_memory_map
= remote_memory_map
;
11439 remote_ops
.to_flash_erase
= remote_flash_erase
;
11440 remote_ops
.to_flash_done
= remote_flash_done
;
11441 remote_ops
.to_read_description
= remote_read_description
;
11442 remote_ops
.to_search_memory
= remote_search_memory
;
11443 remote_ops
.to_can_async_p
= remote_can_async_p
;
11444 remote_ops
.to_is_async_p
= remote_is_async_p
;
11445 remote_ops
.to_async
= remote_async
;
11446 remote_ops
.to_terminal_inferior
= remote_terminal_inferior
;
11447 remote_ops
.to_terminal_ours
= remote_terminal_ours
;
11448 remote_ops
.to_supports_non_stop
= remote_supports_non_stop
;
11449 remote_ops
.to_supports_multi_process
= remote_supports_multi_process
;
11450 remote_ops
.to_supports_disable_randomization
11451 = remote_supports_disable_randomization
;
11452 remote_ops
.to_fileio_open
= remote_hostio_open
;
11453 remote_ops
.to_fileio_pwrite
= remote_hostio_pwrite
;
11454 remote_ops
.to_fileio_pread
= remote_hostio_pread
;
11455 remote_ops
.to_fileio_close
= remote_hostio_close
;
11456 remote_ops
.to_fileio_unlink
= remote_hostio_unlink
;
11457 remote_ops
.to_fileio_readlink
= remote_hostio_readlink
;
11458 remote_ops
.to_supports_enable_disable_tracepoint
= remote_supports_enable_disable_tracepoint
;
11459 remote_ops
.to_supports_string_tracing
= remote_supports_string_tracing
;
11460 remote_ops
.to_supports_evaluation_of_breakpoint_conditions
= remote_supports_cond_breakpoints
;
11461 remote_ops
.to_can_run_breakpoint_commands
= remote_can_run_breakpoint_commands
;
11462 remote_ops
.to_trace_init
= remote_trace_init
;
11463 remote_ops
.to_download_tracepoint
= remote_download_tracepoint
;
11464 remote_ops
.to_can_download_tracepoint
= remote_can_download_tracepoint
;
11465 remote_ops
.to_download_trace_state_variable
11466 = remote_download_trace_state_variable
;
11467 remote_ops
.to_enable_tracepoint
= remote_enable_tracepoint
;
11468 remote_ops
.to_disable_tracepoint
= remote_disable_tracepoint
;
11469 remote_ops
.to_trace_set_readonly_regions
= remote_trace_set_readonly_regions
;
11470 remote_ops
.to_trace_start
= remote_trace_start
;
11471 remote_ops
.to_get_trace_status
= remote_get_trace_status
;
11472 remote_ops
.to_get_tracepoint_status
= remote_get_tracepoint_status
;
11473 remote_ops
.to_trace_stop
= remote_trace_stop
;
11474 remote_ops
.to_trace_find
= remote_trace_find
;
11475 remote_ops
.to_get_trace_state_variable_value
11476 = remote_get_trace_state_variable_value
;
11477 remote_ops
.to_save_trace_data
= remote_save_trace_data
;
11478 remote_ops
.to_upload_tracepoints
= remote_upload_tracepoints
;
11479 remote_ops
.to_upload_trace_state_variables
11480 = remote_upload_trace_state_variables
;
11481 remote_ops
.to_get_raw_trace_data
= remote_get_raw_trace_data
;
11482 remote_ops
.to_get_min_fast_tracepoint_insn_len
= remote_get_min_fast_tracepoint_insn_len
;
11483 remote_ops
.to_set_disconnected_tracing
= remote_set_disconnected_tracing
;
11484 remote_ops
.to_set_circular_trace_buffer
= remote_set_circular_trace_buffer
;
11485 remote_ops
.to_set_trace_buffer_size
= remote_set_trace_buffer_size
;
11486 remote_ops
.to_set_trace_notes
= remote_set_trace_notes
;
11487 remote_ops
.to_core_of_thread
= remote_core_of_thread
;
11488 remote_ops
.to_verify_memory
= remote_verify_memory
;
11489 remote_ops
.to_get_tib_address
= remote_get_tib_address
;
11490 remote_ops
.to_set_permissions
= remote_set_permissions
;
11491 remote_ops
.to_static_tracepoint_marker_at
11492 = remote_static_tracepoint_marker_at
;
11493 remote_ops
.to_static_tracepoint_markers_by_strid
11494 = remote_static_tracepoint_markers_by_strid
;
11495 remote_ops
.to_traceframe_info
= remote_traceframe_info
;
11496 remote_ops
.to_use_agent
= remote_use_agent
;
11497 remote_ops
.to_can_use_agent
= remote_can_use_agent
;
11498 remote_ops
.to_supports_btrace
= remote_supports_btrace
;
11499 remote_ops
.to_enable_btrace
= remote_enable_btrace
;
11500 remote_ops
.to_disable_btrace
= remote_disable_btrace
;
11501 remote_ops
.to_teardown_btrace
= remote_teardown_btrace
;
11502 remote_ops
.to_read_btrace
= remote_read_btrace
;
11503 remote_ops
.to_augmented_libraries_svr4_read
=
11504 remote_augmented_libraries_svr4_read
;
11507 /* Set up the extended remote vector by making a copy of the standard
11508 remote vector and adding to it. */
11511 init_extended_remote_ops (void)
11513 extended_remote_ops
= remote_ops
;
11515 extended_remote_ops
.to_shortname
= "extended-remote";
11516 extended_remote_ops
.to_longname
=
11517 "Extended remote serial target in gdb-specific protocol";
11518 extended_remote_ops
.to_doc
=
11519 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
11520 Specify the serial device it is connected to (e.g. /dev/ttya).";
11521 extended_remote_ops
.to_open
= extended_remote_open
;
11522 extended_remote_ops
.to_create_inferior
= extended_remote_create_inferior
;
11523 extended_remote_ops
.to_mourn_inferior
= extended_remote_mourn
;
11524 extended_remote_ops
.to_detach
= extended_remote_detach
;
11525 extended_remote_ops
.to_attach
= extended_remote_attach
;
11526 extended_remote_ops
.to_kill
= extended_remote_kill
;
11527 extended_remote_ops
.to_supports_disable_randomization
11528 = extended_remote_supports_disable_randomization
;
11532 remote_can_async_p (struct target_ops
*ops
)
11534 struct remote_state
*rs
= get_remote_state ();
11536 if (!target_async_permitted
)
11537 /* We only enable async when the user specifically asks for it. */
11540 /* We're async whenever the serial device is. */
11541 return serial_can_async_p (rs
->remote_desc
);
11545 remote_is_async_p (struct target_ops
*ops
)
11547 struct remote_state
*rs
= get_remote_state ();
11549 if (!target_async_permitted
)
11550 /* We only enable async when the user specifically asks for it. */
11553 /* We're async whenever the serial device is. */
11554 return serial_is_async_p (rs
->remote_desc
);
11557 /* Pass the SERIAL event on and up to the client. One day this code
11558 will be able to delay notifying the client of an event until the
11559 point where an entire packet has been received. */
11561 static serial_event_ftype remote_async_serial_handler
;
11564 remote_async_serial_handler (struct serial
*scb
, void *context
)
11566 struct remote_state
*rs
= context
;
11568 /* Don't propogate error information up to the client. Instead let
11569 the client find out about the error by querying the target. */
11570 rs
->async_client_callback (INF_REG_EVENT
, rs
->async_client_context
);
11574 remote_async_inferior_event_handler (gdb_client_data data
)
11576 inferior_event_handler (INF_REG_EVENT
, NULL
);
11580 remote_async (struct target_ops
*ops
,
11581 void (*callback
) (enum inferior_event_type event_type
,
11585 struct remote_state
*rs
= get_remote_state ();
11587 if (callback
!= NULL
)
11589 serial_async (rs
->remote_desc
, remote_async_serial_handler
, rs
);
11590 rs
->async_client_callback
= callback
;
11591 rs
->async_client_context
= context
;
11594 serial_async (rs
->remote_desc
, NULL
, NULL
);
11598 set_remote_cmd (char *args
, int from_tty
)
11600 help_list (remote_set_cmdlist
, "set remote ", -1, gdb_stdout
);
11604 show_remote_cmd (char *args
, int from_tty
)
11606 /* We can't just use cmd_show_list here, because we want to skip
11607 the redundant "show remote Z-packet" and the legacy aliases. */
11608 struct cleanup
*showlist_chain
;
11609 struct cmd_list_element
*list
= remote_show_cmdlist
;
11610 struct ui_out
*uiout
= current_uiout
;
11612 showlist_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "showlist");
11613 for (; list
!= NULL
; list
= list
->next
)
11614 if (strcmp (list
->name
, "Z-packet") == 0)
11616 else if (list
->type
== not_set_cmd
)
11617 /* Alias commands are exactly like the original, except they
11618 don't have the normal type. */
11622 struct cleanup
*option_chain
11623 = make_cleanup_ui_out_tuple_begin_end (uiout
, "option");
11625 ui_out_field_string (uiout
, "name", list
->name
);
11626 ui_out_text (uiout
, ": ");
11627 if (list
->type
== show_cmd
)
11628 do_show_command ((char *) NULL
, from_tty
, list
);
11630 cmd_func (list
, NULL
, from_tty
);
11631 /* Close the tuple. */
11632 do_cleanups (option_chain
);
11635 /* Close the tuple. */
11636 do_cleanups (showlist_chain
);
11640 /* Function to be called whenever a new objfile (shlib) is detected. */
11642 remote_new_objfile (struct objfile
*objfile
)
11644 struct remote_state
*rs
= get_remote_state ();
11646 if (rs
->remote_desc
!= 0) /* Have a remote connection. */
11647 remote_check_symbols ();
11650 /* Pull all the tracepoints defined on the target and create local
11651 data structures representing them. We don't want to create real
11652 tracepoints yet, we don't want to mess up the user's existing
11656 remote_upload_tracepoints (struct target_ops
*self
, struct uploaded_tp
**utpp
)
11658 struct remote_state
*rs
= get_remote_state ();
11661 /* Ask for a first packet of tracepoint definition. */
11663 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11665 while (*p
&& *p
!= 'l')
11667 parse_tracepoint_definition (p
, utpp
);
11668 /* Ask for another packet of tracepoint definition. */
11670 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11677 remote_upload_trace_state_variables (struct target_ops
*self
,
11678 struct uploaded_tsv
**utsvp
)
11680 struct remote_state
*rs
= get_remote_state ();
11683 /* Ask for a first packet of variable definition. */
11685 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11687 while (*p
&& *p
!= 'l')
11689 parse_tsv_definition (p
, utsvp
);
11690 /* Ask for another packet of variable definition. */
11692 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
11698 /* The "set/show range-stepping" show hook. */
11701 show_range_stepping (struct ui_file
*file
, int from_tty
,
11702 struct cmd_list_element
*c
,
11705 fprintf_filtered (file
,
11706 _("Debugger's willingness to use range stepping "
11707 "is %s.\n"), value
);
11710 /* The "set/show range-stepping" set hook. */
11713 set_range_stepping (char *ignore_args
, int from_tty
,
11714 struct cmd_list_element
*c
)
11716 struct remote_state
*rs
= get_remote_state ();
11718 /* Whene enabling, check whether range stepping is actually
11719 supported by the target, and warn if not. */
11720 if (use_range_stepping
)
11722 if (rs
->remote_desc
!= NULL
)
11724 if (remote_protocol_packets
[PACKET_vCont
].support
== PACKET_SUPPORT_UNKNOWN
)
11725 remote_vcont_probe (rs
);
11727 if (remote_protocol_packets
[PACKET_vCont
].support
== PACKET_ENABLE
11728 && rs
->supports_vCont
.r
)
11732 warning (_("Range stepping is not supported by the current target"));
11737 _initialize_remote (void)
11739 struct remote_state
*rs
;
11740 struct cmd_list_element
*cmd
;
11741 const char *cmd_name
;
11743 /* architecture specific data */
11744 remote_gdbarch_data_handle
=
11745 gdbarch_data_register_post_init (init_remote_state
);
11746 remote_g_packet_data_handle
=
11747 gdbarch_data_register_pre_init (remote_g_packet_data_init
);
11749 /* Initialize the per-target state. At the moment there is only one
11750 of these, not one per target. Only one target is active at a
11752 remote_state
= new_remote_state ();
11754 init_remote_ops ();
11755 add_target (&remote_ops
);
11757 init_extended_remote_ops ();
11758 add_target (&extended_remote_ops
);
11760 /* Hook into new objfile notification. */
11761 observer_attach_new_objfile (remote_new_objfile
);
11762 /* We're no longer interested in notification events of an inferior
11764 observer_attach_inferior_exit (discard_pending_stop_replies
);
11766 /* Set up signal handlers. */
11767 async_sigint_remote_token
=
11768 create_async_signal_handler (async_remote_interrupt
, NULL
);
11769 async_sigint_remote_twice_token
=
11770 create_async_signal_handler (async_remote_interrupt_twice
, NULL
);
11773 init_remote_threadtests ();
11776 stop_reply_queue
= QUEUE_alloc (stop_reply_p
, stop_reply_xfree
);
11777 /* set/show remote ... */
11779 add_prefix_cmd ("remote", class_maintenance
, set_remote_cmd
, _("\
11780 Remote protocol specific variables\n\
11781 Configure various remote-protocol specific variables such as\n\
11782 the packets being used"),
11783 &remote_set_cmdlist
, "set remote ",
11784 0 /* allow-unknown */, &setlist
);
11785 add_prefix_cmd ("remote", class_maintenance
, show_remote_cmd
, _("\
11786 Remote protocol specific variables\n\
11787 Configure various remote-protocol specific variables such as\n\
11788 the packets being used"),
11789 &remote_show_cmdlist
, "show remote ",
11790 0 /* allow-unknown */, &showlist
);
11792 add_cmd ("compare-sections", class_obscure
, compare_sections_command
, _("\
11793 Compare section data on target to the exec file.\n\
11794 Argument is a single section name (default: all loaded sections)."),
11797 add_cmd ("packet", class_maintenance
, packet_command
, _("\
11798 Send an arbitrary packet to a remote target.\n\
11799 maintenance packet TEXT\n\
11800 If GDB is talking to an inferior via the GDB serial protocol, then\n\
11801 this command sends the string TEXT to the inferior, and displays the\n\
11802 response packet. GDB supplies the initial `$' character, and the\n\
11803 terminating `#' character and checksum."),
11806 add_setshow_boolean_cmd ("remotebreak", no_class
, &remote_break
, _("\
11807 Set whether to send break if interrupted."), _("\
11808 Show whether to send break if interrupted."), _("\
11809 If set, a break, instead of a cntrl-c, is sent to the remote target."),
11810 set_remotebreak
, show_remotebreak
,
11811 &setlist
, &showlist
);
11812 cmd_name
= "remotebreak";
11813 cmd
= lookup_cmd (&cmd_name
, setlist
, "", -1, 1);
11814 deprecate_cmd (cmd
, "set remote interrupt-sequence");
11815 cmd_name
= "remotebreak"; /* needed because lookup_cmd updates the pointer */
11816 cmd
= lookup_cmd (&cmd_name
, showlist
, "", -1, 1);
11817 deprecate_cmd (cmd
, "show remote interrupt-sequence");
11819 add_setshow_enum_cmd ("interrupt-sequence", class_support
,
11820 interrupt_sequence_modes
, &interrupt_sequence_mode
,
11822 Set interrupt sequence to remote target."), _("\
11823 Show interrupt sequence to remote target."), _("\
11824 Valid value is \"Ctrl-C\", \"BREAK\" or \"BREAK-g\". The default is \"Ctrl-C\"."),
11825 NULL
, show_interrupt_sequence
,
11826 &remote_set_cmdlist
,
11827 &remote_show_cmdlist
);
11829 add_setshow_boolean_cmd ("interrupt-on-connect", class_support
,
11830 &interrupt_on_connect
, _("\
11831 Set whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \
11832 Show whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \
11833 If set, interrupt sequence is sent to remote target."),
11835 &remote_set_cmdlist
, &remote_show_cmdlist
);
11837 /* Install commands for configuring memory read/write packets. */
11839 add_cmd ("remotewritesize", no_class
, set_memory_write_packet_size
, _("\
11840 Set the maximum number of bytes per memory write packet (deprecated)."),
11842 add_cmd ("remotewritesize", no_class
, show_memory_write_packet_size
, _("\
11843 Show the maximum number of bytes per memory write packet (deprecated)."),
11845 add_cmd ("memory-write-packet-size", no_class
,
11846 set_memory_write_packet_size
, _("\
11847 Set the maximum number of bytes per memory-write packet.\n\
11848 Specify the number of bytes in a packet or 0 (zero) for the\n\
11849 default packet size. The actual limit is further reduced\n\
11850 dependent on the target. Specify ``fixed'' to disable the\n\
11851 further restriction and ``limit'' to enable that restriction."),
11852 &remote_set_cmdlist
);
11853 add_cmd ("memory-read-packet-size", no_class
,
11854 set_memory_read_packet_size
, _("\
11855 Set the maximum number of bytes per memory-read packet.\n\
11856 Specify the number of bytes in a packet or 0 (zero) for the\n\
11857 default packet size. The actual limit is further reduced\n\
11858 dependent on the target. Specify ``fixed'' to disable the\n\
11859 further restriction and ``limit'' to enable that restriction."),
11860 &remote_set_cmdlist
);
11861 add_cmd ("memory-write-packet-size", no_class
,
11862 show_memory_write_packet_size
,
11863 _("Show the maximum number of bytes per memory-write packet."),
11864 &remote_show_cmdlist
);
11865 add_cmd ("memory-read-packet-size", no_class
,
11866 show_memory_read_packet_size
,
11867 _("Show the maximum number of bytes per memory-read packet."),
11868 &remote_show_cmdlist
);
11870 add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class
,
11871 &remote_hw_watchpoint_limit
, _("\
11872 Set the maximum number of target hardware watchpoints."), _("\
11873 Show the maximum number of target hardware watchpoints."), _("\
11874 Specify a negative limit for unlimited."),
11875 NULL
, NULL
, /* FIXME: i18n: The maximum
11876 number of target hardware
11877 watchpoints is %s. */
11878 &remote_set_cmdlist
, &remote_show_cmdlist
);
11879 add_setshow_zinteger_cmd ("hardware-watchpoint-length-limit", no_class
,
11880 &remote_hw_watchpoint_length_limit
, _("\
11881 Set the maximum length (in bytes) of a target hardware watchpoint."), _("\
11882 Show the maximum length (in bytes) of a target hardware watchpoint."), _("\
11883 Specify a negative limit for unlimited."),
11884 NULL
, NULL
, /* FIXME: i18n: The maximum
11885 length (in bytes) of a target
11886 hardware watchpoint is %s. */
11887 &remote_set_cmdlist
, &remote_show_cmdlist
);
11888 add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class
,
11889 &remote_hw_breakpoint_limit
, _("\
11890 Set the maximum number of target hardware breakpoints."), _("\
11891 Show the maximum number of target hardware breakpoints."), _("\
11892 Specify a negative limit for unlimited."),
11893 NULL
, NULL
, /* FIXME: i18n: The maximum
11894 number of target hardware
11895 breakpoints is %s. */
11896 &remote_set_cmdlist
, &remote_show_cmdlist
);
11898 add_setshow_zuinteger_cmd ("remoteaddresssize", class_obscure
,
11899 &remote_address_size
, _("\
11900 Set the maximum size of the address (in bits) in a memory packet."), _("\
11901 Show the maximum size of the address (in bits) in a memory packet."), NULL
,
11903 NULL
, /* FIXME: i18n: */
11904 &setlist
, &showlist
);
11906 add_packet_config_cmd (&remote_protocol_packets
[PACKET_X
],
11907 "X", "binary-download", 1);
11909 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vCont
],
11910 "vCont", "verbose-resume", 0);
11912 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QPassSignals
],
11913 "QPassSignals", "pass-signals", 0);
11915 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QProgramSignals
],
11916 "QProgramSignals", "program-signals", 0);
11918 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSymbol
],
11919 "qSymbol", "symbol-lookup", 0);
11921 add_packet_config_cmd (&remote_protocol_packets
[PACKET_P
],
11922 "P", "set-register", 1);
11924 add_packet_config_cmd (&remote_protocol_packets
[PACKET_p
],
11925 "p", "fetch-register", 1);
11927 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z0
],
11928 "Z0", "software-breakpoint", 0);
11930 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z1
],
11931 "Z1", "hardware-breakpoint", 0);
11933 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z2
],
11934 "Z2", "write-watchpoint", 0);
11936 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z3
],
11937 "Z3", "read-watchpoint", 0);
11939 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z4
],
11940 "Z4", "access-watchpoint", 0);
11942 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_auxv
],
11943 "qXfer:auxv:read", "read-aux-vector", 0);
11945 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_features
],
11946 "qXfer:features:read", "target-features", 0);
11948 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_libraries
],
11949 "qXfer:libraries:read", "library-info", 0);
11951 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_libraries_svr4
],
11952 "qXfer:libraries-svr4:read", "library-info-svr4", 0);
11954 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_memory_map
],
11955 "qXfer:memory-map:read", "memory-map", 0);
11957 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_spu_read
],
11958 "qXfer:spu:read", "read-spu-object", 0);
11960 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_spu_write
],
11961 "qXfer:spu:write", "write-spu-object", 0);
11963 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_osdata
],
11964 "qXfer:osdata:read", "osdata", 0);
11966 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_threads
],
11967 "qXfer:threads:read", "threads", 0);
11969 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_siginfo_read
],
11970 "qXfer:siginfo:read", "read-siginfo-object", 0);
11972 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_siginfo_write
],
11973 "qXfer:siginfo:write", "write-siginfo-object", 0);
11975 add_packet_config_cmd
11976 (&remote_protocol_packets
[PACKET_qXfer_traceframe_info
],
11977 "qXfer:traceframe-info:read", "traceframe-info", 0);
11979 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_uib
],
11980 "qXfer:uib:read", "unwind-info-block", 0);
11982 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qGetTLSAddr
],
11983 "qGetTLSAddr", "get-thread-local-storage-address",
11986 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qGetTIBAddr
],
11987 "qGetTIBAddr", "get-thread-information-block-address",
11990 add_packet_config_cmd (&remote_protocol_packets
[PACKET_bc
],
11991 "bc", "reverse-continue", 0);
11993 add_packet_config_cmd (&remote_protocol_packets
[PACKET_bs
],
11994 "bs", "reverse-step", 0);
11996 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSupported
],
11997 "qSupported", "supported-packets", 0);
11999 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSearch_memory
],
12000 "qSearch:memory", "search-memory", 0);
12002 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qTStatus
],
12003 "qTStatus", "trace-status", 0);
12005 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_open
],
12006 "vFile:open", "hostio-open", 0);
12008 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_pread
],
12009 "vFile:pread", "hostio-pread", 0);
12011 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_pwrite
],
12012 "vFile:pwrite", "hostio-pwrite", 0);
12014 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_close
],
12015 "vFile:close", "hostio-close", 0);
12017 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_unlink
],
12018 "vFile:unlink", "hostio-unlink", 0);
12020 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_readlink
],
12021 "vFile:readlink", "hostio-readlink", 0);
12023 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vAttach
],
12024 "vAttach", "attach", 0);
12026 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vRun
],
12029 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QStartNoAckMode
],
12030 "QStartNoAckMode", "noack", 0);
12032 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vKill
],
12033 "vKill", "kill", 0);
12035 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qAttached
],
12036 "qAttached", "query-attached", 0);
12038 add_packet_config_cmd (&remote_protocol_packets
[PACKET_ConditionalTracepoints
],
12039 "ConditionalTracepoints",
12040 "conditional-tracepoints", 0);
12042 add_packet_config_cmd (&remote_protocol_packets
[PACKET_ConditionalBreakpoints
],
12043 "ConditionalBreakpoints",
12044 "conditional-breakpoints", 0);
12046 add_packet_config_cmd (&remote_protocol_packets
[PACKET_BreakpointCommands
],
12047 "BreakpointCommands",
12048 "breakpoint-commands", 0);
12050 add_packet_config_cmd (&remote_protocol_packets
[PACKET_FastTracepoints
],
12051 "FastTracepoints", "fast-tracepoints", 0);
12053 add_packet_config_cmd (&remote_protocol_packets
[PACKET_TracepointSource
],
12054 "TracepointSource", "TracepointSource", 0);
12056 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QAllow
],
12057 "QAllow", "allow", 0);
12059 add_packet_config_cmd (&remote_protocol_packets
[PACKET_StaticTracepoints
],
12060 "StaticTracepoints", "static-tracepoints", 0);
12062 add_packet_config_cmd (&remote_protocol_packets
[PACKET_InstallInTrace
],
12063 "InstallInTrace", "install-in-trace", 0);
12065 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_statictrace_read
],
12066 "qXfer:statictrace:read", "read-sdata-object", 0);
12068 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_fdpic
],
12069 "qXfer:fdpic:read", "read-fdpic-loadmap", 0);
12071 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QDisableRandomization
],
12072 "QDisableRandomization", "disable-randomization", 0);
12074 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QAgent
],
12075 "QAgent", "agent", 0);
12077 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QTBuffer_size
],
12078 "QTBuffer:size", "trace-buffer-size", 0);
12080 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Qbtrace_off
],
12081 "Qbtrace:off", "disable-btrace", 0);
12083 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Qbtrace_bts
],
12084 "Qbtrace:bts", "enable-btrace", 0);
12086 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_btrace
],
12087 "qXfer:btrace", "read-btrace", 0);
12089 /* Keep the old ``set remote Z-packet ...'' working. Each individual
12090 Z sub-packet has its own set and show commands, but users may
12091 have sets to this variable in their .gdbinit files (or in their
12093 add_setshow_auto_boolean_cmd ("Z-packet", class_obscure
,
12094 &remote_Z_packet_detect
, _("\
12095 Set use of remote protocol `Z' packets"), _("\
12096 Show use of remote protocol `Z' packets "), _("\
12097 When set, GDB will attempt to use the remote breakpoint and watchpoint\n\
12099 set_remote_protocol_Z_packet_cmd
,
12100 show_remote_protocol_Z_packet_cmd
,
12101 /* FIXME: i18n: Use of remote protocol
12102 `Z' packets is %s. */
12103 &remote_set_cmdlist
, &remote_show_cmdlist
);
12105 add_prefix_cmd ("remote", class_files
, remote_command
, _("\
12106 Manipulate files on the remote system\n\
12107 Transfer files to and from the remote target system."),
12108 &remote_cmdlist
, "remote ",
12109 0 /* allow-unknown */, &cmdlist
);
12111 add_cmd ("put", class_files
, remote_put_command
,
12112 _("Copy a local file to the remote system."),
12115 add_cmd ("get", class_files
, remote_get_command
,
12116 _("Copy a remote file to the local system."),
12119 add_cmd ("delete", class_files
, remote_delete_command
,
12120 _("Delete a remote file."),
12123 remote_exec_file
= xstrdup ("");
12124 add_setshow_string_noescape_cmd ("exec-file", class_files
,
12125 &remote_exec_file
, _("\
12126 Set the remote pathname for \"run\""), _("\
12127 Show the remote pathname for \"run\""), NULL
, NULL
, NULL
,
12128 &remote_set_cmdlist
, &remote_show_cmdlist
);
12130 add_setshow_boolean_cmd ("range-stepping", class_run
,
12131 &use_range_stepping
, _("\
12132 Enable or disable range stepping."), _("\
12133 Show whether target-assisted range stepping is enabled."), _("\
12134 If on, and the target supports it, when stepping a source line, GDB\n\
12135 tells the target to step the corresponding range of addresses itself instead\n\
12136 of issuing multiple single-steps. This speeds up source level\n\
12137 stepping. If off, GDB always issues single-steps, even if range\n\
12138 stepping is supported by the target. The default is on."),
12139 set_range_stepping
,
12140 show_range_stepping
,
12144 /* Eventually initialize fileio. See fileio.c */
12145 initialize_remote_fileio (remote_set_cmdlist
, remote_show_cmdlist
);
12147 /* Take advantage of the fact that the LWP field is not used, to tag
12148 special ptids with it set to != 0. */
12149 magic_null_ptid
= ptid_build (42000, 1, -1);
12150 not_sent_ptid
= ptid_build (42000, 1, -2);
12151 any_thread_ptid
= ptid_build (42000, 1, 0);
12153 target_buf_size
= 2048;
12154 target_buf
= xmalloc (target_buf_size
);